Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
6aba47ca | 3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
7b6bb8da | 4 | 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
0fb0cc75 | 5 | Free Software Foundation, Inc. |
c906108c SS |
6 | |
7 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
8 | Inc. with support from Florida State University (under contract | |
9 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
10 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
11 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 12 | support. |
c906108c | 13 | |
c5aa993b | 14 | This file is part of GDB. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is free software; you can redistribute it and/or modify |
17 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
18 | the Free Software Foundation; either version 3 of the License, or |
19 | (at your option) any later version. | |
c906108c | 20 | |
a9762ec7 JB |
21 | This program is distributed in the hope that it will be useful, |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
c906108c | 25 | |
c5aa993b | 26 | You should have received a copy of the GNU General Public License |
a9762ec7 | 27 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
28 | |
29 | #include "defs.h" | |
30 | #include "bfd.h" | |
c906108c SS |
31 | #include "symtab.h" |
32 | #include "gdbtypes.h" | |
c906108c | 33 | #include "objfiles.h" |
fa8f86ff | 34 | #include "dwarf2.h" |
c906108c SS |
35 | #include "buildsym.h" |
36 | #include "demangle.h" | |
50f182aa | 37 | #include "gdb-demangle.h" |
c906108c | 38 | #include "expression.h" |
d5166ae1 | 39 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 40 | #include "macrotab.h" |
c906108c SS |
41 | #include "language.h" |
42 | #include "complaints.h" | |
357e46e7 | 43 | #include "bcache.h" |
4c2df51b DJ |
44 | #include "dwarf2expr.h" |
45 | #include "dwarf2loc.h" | |
9219021c | 46 | #include "cp-support.h" |
72bf9492 | 47 | #include "hashtab.h" |
ae038cb0 DJ |
48 | #include "command.h" |
49 | #include "gdbcmd.h" | |
edb3359d | 50 | #include "block.h" |
ff013f42 | 51 | #include "addrmap.h" |
94af9270 KS |
52 | #include "typeprint.h" |
53 | #include "jv-lang.h" | |
ccefe4c4 | 54 | #include "psympriv.h" |
9291a0cd TT |
55 | #include "exceptions.h" |
56 | #include "gdb_stat.h" | |
96d19272 | 57 | #include "completer.h" |
34eaf542 | 58 | #include "vec.h" |
98bfdba5 PA |
59 | #include "c-lang.h" |
60 | #include "valprint.h" | |
60d5a603 | 61 | #include <ctype.h> |
4c2df51b | 62 | |
c906108c SS |
63 | #include <fcntl.h> |
64 | #include "gdb_string.h" | |
4bdf3d34 | 65 | #include "gdb_assert.h" |
c906108c | 66 | #include <sys/types.h> |
233a11ab CS |
67 | #ifdef HAVE_ZLIB_H |
68 | #include <zlib.h> | |
69 | #endif | |
dce234bc PP |
70 | #ifdef HAVE_MMAP |
71 | #include <sys/mman.h> | |
85d9bd0e TT |
72 | #ifndef MAP_FAILED |
73 | #define MAP_FAILED ((void *) -1) | |
74 | #endif | |
dce234bc | 75 | #endif |
d8151005 | 76 | |
34eaf542 TT |
77 | typedef struct symbol *symbolp; |
78 | DEF_VEC_P (symbolp); | |
79 | ||
107d2387 | 80 | #if 0 |
357e46e7 | 81 | /* .debug_info header for a compilation unit |
c906108c SS |
82 | Because of alignment constraints, this structure has padding and cannot |
83 | be mapped directly onto the beginning of the .debug_info section. */ | |
84 | typedef struct comp_unit_header | |
85 | { | |
86 | unsigned int length; /* length of the .debug_info | |
87 | contribution */ | |
88 | unsigned short version; /* version number -- 2 for DWARF | |
89 | version 2 */ | |
90 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
91 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
92 | } | |
93 | _COMP_UNIT_HEADER; | |
94 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 95 | #endif |
c906108c | 96 | |
c906108c SS |
97 | /* .debug_line statement program prologue |
98 | Because of alignment constraints, this structure has padding and cannot | |
99 | be mapped directly onto the beginning of the .debug_info section. */ | |
100 | typedef struct statement_prologue | |
101 | { | |
102 | unsigned int total_length; /* byte length of the statement | |
103 | information */ | |
104 | unsigned short version; /* version number -- 2 for DWARF | |
105 | version 2 */ | |
106 | unsigned int prologue_length; /* # bytes between prologue & | |
107 | stmt program */ | |
108 | unsigned char minimum_instruction_length; /* byte size of | |
109 | smallest instr */ | |
110 | unsigned char default_is_stmt; /* initial value of is_stmt | |
111 | register */ | |
112 | char line_base; | |
113 | unsigned char line_range; | |
114 | unsigned char opcode_base; /* number assigned to first special | |
115 | opcode */ | |
116 | unsigned char *standard_opcode_lengths; | |
117 | } | |
118 | _STATEMENT_PROLOGUE; | |
119 | ||
d97bc12b DE |
120 | /* When non-zero, dump DIEs after they are read in. */ |
121 | static int dwarf2_die_debug = 0; | |
122 | ||
900e11f9 JK |
123 | /* When non-zero, cross-check physname against demangler. */ |
124 | static int check_physname = 0; | |
125 | ||
dce234bc PP |
126 | static int pagesize; |
127 | ||
df8a16a1 DJ |
128 | /* When set, the file that we're processing is known to have debugging |
129 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
130 | but later versions do. */ | |
131 | ||
132 | static int processing_has_namespace_info; | |
133 | ||
6502dd73 DJ |
134 | static const struct objfile_data *dwarf2_objfile_data_key; |
135 | ||
dce234bc PP |
136 | struct dwarf2_section_info |
137 | { | |
138 | asection *asection; | |
139 | gdb_byte *buffer; | |
140 | bfd_size_type size; | |
b315ab21 TG |
141 | /* Not NULL if the section was actually mmapped. */ |
142 | void *map_addr; | |
143 | /* Page aligned size of mmapped area. */ | |
144 | bfd_size_type map_len; | |
be391dca TT |
145 | /* True if we have tried to read this section. */ |
146 | int readin; | |
dce234bc PP |
147 | }; |
148 | ||
8b70b953 TT |
149 | typedef struct dwarf2_section_info dwarf2_section_info_def; |
150 | DEF_VEC_O (dwarf2_section_info_def); | |
151 | ||
9291a0cd TT |
152 | /* All offsets in the index are of this type. It must be |
153 | architecture-independent. */ | |
154 | typedef uint32_t offset_type; | |
155 | ||
156 | DEF_VEC_I (offset_type); | |
157 | ||
158 | /* A description of the mapped index. The file format is described in | |
159 | a comment by the code that writes the index. */ | |
160 | struct mapped_index | |
161 | { | |
559a7a62 JK |
162 | /* Index data format version. */ |
163 | int version; | |
164 | ||
9291a0cd TT |
165 | /* The total length of the buffer. */ |
166 | off_t total_size; | |
b11b1f88 | 167 | |
9291a0cd TT |
168 | /* A pointer to the address table data. */ |
169 | const gdb_byte *address_table; | |
b11b1f88 | 170 | |
9291a0cd TT |
171 | /* Size of the address table data in bytes. */ |
172 | offset_type address_table_size; | |
b11b1f88 | 173 | |
3876f04e DE |
174 | /* The symbol table, implemented as a hash table. */ |
175 | const offset_type *symbol_table; | |
b11b1f88 | 176 | |
9291a0cd | 177 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 178 | offset_type symbol_table_slots; |
b11b1f88 | 179 | |
9291a0cd TT |
180 | /* A pointer to the constant pool. */ |
181 | const char *constant_pool; | |
182 | }; | |
183 | ||
9cdd5dbd DE |
184 | /* Collection of data recorded per objfile. |
185 | This hangs off of dwarf2_objfile_data_key. */ | |
186 | ||
6502dd73 DJ |
187 | struct dwarf2_per_objfile |
188 | { | |
dce234bc PP |
189 | struct dwarf2_section_info info; |
190 | struct dwarf2_section_info abbrev; | |
191 | struct dwarf2_section_info line; | |
dce234bc PP |
192 | struct dwarf2_section_info loc; |
193 | struct dwarf2_section_info macinfo; | |
cf2c3c16 | 194 | struct dwarf2_section_info macro; |
dce234bc PP |
195 | struct dwarf2_section_info str; |
196 | struct dwarf2_section_info ranges; | |
197 | struct dwarf2_section_info frame; | |
198 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 199 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 200 | |
8b70b953 TT |
201 | VEC (dwarf2_section_info_def) *types; |
202 | ||
be391dca TT |
203 | /* Back link. */ |
204 | struct objfile *objfile; | |
205 | ||
10b3939b DJ |
206 | /* A list of all the compilation units. This is used to locate |
207 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
208 | struct dwarf2_per_cu_data **all_comp_units; |
209 | ||
210 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
211 | int n_comp_units; | |
212 | ||
1fd400ff TT |
213 | /* The number of .debug_types-related CUs. */ |
214 | int n_type_comp_units; | |
215 | ||
216 | /* The .debug_types-related CUs. */ | |
217 | struct dwarf2_per_cu_data **type_comp_units; | |
218 | ||
ae038cb0 DJ |
219 | /* A chain of compilation units that are currently read in, so that |
220 | they can be freed later. */ | |
221 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 222 | |
348e048f DE |
223 | /* A table mapping .debug_types signatures to its signatured_type entry. |
224 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
225 | htab_t signatured_types; | |
226 | ||
72dca2f5 FR |
227 | /* A flag indicating wether this objfile has a section loaded at a |
228 | VMA of 0. */ | |
229 | int has_section_at_zero; | |
9291a0cd | 230 | |
ae2de4f8 DE |
231 | /* True if we are using the mapped index, |
232 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
233 | unsigned char using_index; |
234 | ||
ae2de4f8 | 235 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 236 | struct mapped_index *index_table; |
98bfdba5 | 237 | |
7b9f3c50 DE |
238 | /* When using index_table, this keeps track of all quick_file_names entries. |
239 | TUs can share line table entries with CUs or other TUs, and there can be | |
240 | a lot more TUs than unique line tables, so we maintain a separate table | |
241 | of all line table entries to support the sharing. */ | |
242 | htab_t quick_file_names_table; | |
243 | ||
98bfdba5 PA |
244 | /* Set during partial symbol reading, to prevent queueing of full |
245 | symbols. */ | |
246 | int reading_partial_symbols; | |
673bfd45 DE |
247 | |
248 | /* Table mapping type .debug_info DIE offsets to types. | |
249 | This is NULL if not allocated yet. | |
250 | It (currently) makes sense to allocate debug_types_type_hash lazily. | |
251 | To keep things simple we allocate both lazily. */ | |
252 | htab_t debug_info_type_hash; | |
253 | ||
254 | /* Table mapping type .debug_types DIE offsets to types. | |
255 | This is NULL if not allocated yet. */ | |
256 | htab_t debug_types_type_hash; | |
6502dd73 DJ |
257 | }; |
258 | ||
259 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 260 | |
251d32d9 | 261 | /* Default names of the debugging sections. */ |
c906108c | 262 | |
233a11ab CS |
263 | /* Note that if the debugging section has been compressed, it might |
264 | have a name like .zdebug_info. */ | |
265 | ||
9cdd5dbd DE |
266 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
267 | { | |
251d32d9 TG |
268 | { ".debug_info", ".zdebug_info" }, |
269 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
270 | { ".debug_line", ".zdebug_line" }, | |
271 | { ".debug_loc", ".zdebug_loc" }, | |
272 | { ".debug_macinfo", ".zdebug_macinfo" }, | |
cf2c3c16 | 273 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 TG |
274 | { ".debug_str", ".zdebug_str" }, |
275 | { ".debug_ranges", ".zdebug_ranges" }, | |
276 | { ".debug_types", ".zdebug_types" }, | |
277 | { ".debug_frame", ".zdebug_frame" }, | |
278 | { ".eh_frame", NULL }, | |
24d3216f TT |
279 | { ".gdb_index", ".zgdb_index" }, |
280 | 23 | |
251d32d9 | 281 | }; |
c906108c SS |
282 | |
283 | /* local data types */ | |
284 | ||
0963b4bd | 285 | /* We hold several abbreviation tables in memory at the same time. */ |
57349743 JB |
286 | #ifndef ABBREV_HASH_SIZE |
287 | #define ABBREV_HASH_SIZE 121 | |
288 | #endif | |
289 | ||
107d2387 AC |
290 | /* The data in a compilation unit header, after target2host |
291 | translation, looks like this. */ | |
c906108c | 292 | struct comp_unit_head |
a738430d | 293 | { |
c764a876 | 294 | unsigned int length; |
a738430d | 295 | short version; |
a738430d MK |
296 | unsigned char addr_size; |
297 | unsigned char signed_addr_p; | |
9cbfa09e | 298 | unsigned int abbrev_offset; |
57349743 | 299 | |
a738430d MK |
300 | /* Size of file offsets; either 4 or 8. */ |
301 | unsigned int offset_size; | |
57349743 | 302 | |
a738430d MK |
303 | /* Size of the length field; either 4 or 12. */ |
304 | unsigned int initial_length_size; | |
57349743 | 305 | |
a738430d MK |
306 | /* Offset to the first byte of this compilation unit header in the |
307 | .debug_info section, for resolving relative reference dies. */ | |
308 | unsigned int offset; | |
57349743 | 309 | |
d00adf39 DE |
310 | /* Offset to first die in this cu from the start of the cu. |
311 | This will be the first byte following the compilation unit header. */ | |
312 | unsigned int first_die_offset; | |
a738430d | 313 | }; |
c906108c | 314 | |
3da10d80 KS |
315 | /* Type used for delaying computation of method physnames. |
316 | See comments for compute_delayed_physnames. */ | |
317 | struct delayed_method_info | |
318 | { | |
319 | /* The type to which the method is attached, i.e., its parent class. */ | |
320 | struct type *type; | |
321 | ||
322 | /* The index of the method in the type's function fieldlists. */ | |
323 | int fnfield_index; | |
324 | ||
325 | /* The index of the method in the fieldlist. */ | |
326 | int index; | |
327 | ||
328 | /* The name of the DIE. */ | |
329 | const char *name; | |
330 | ||
331 | /* The DIE associated with this method. */ | |
332 | struct die_info *die; | |
333 | }; | |
334 | ||
335 | typedef struct delayed_method_info delayed_method_info; | |
336 | DEF_VEC_O (delayed_method_info); | |
337 | ||
e7c27a73 DJ |
338 | /* Internal state when decoding a particular compilation unit. */ |
339 | struct dwarf2_cu | |
340 | { | |
341 | /* The objfile containing this compilation unit. */ | |
342 | struct objfile *objfile; | |
343 | ||
d00adf39 | 344 | /* The header of the compilation unit. */ |
e7c27a73 | 345 | struct comp_unit_head header; |
e142c38c | 346 | |
d00adf39 DE |
347 | /* Base address of this compilation unit. */ |
348 | CORE_ADDR base_address; | |
349 | ||
350 | /* Non-zero if base_address has been set. */ | |
351 | int base_known; | |
352 | ||
e142c38c DJ |
353 | /* The language we are debugging. */ |
354 | enum language language; | |
355 | const struct language_defn *language_defn; | |
356 | ||
b0f35d58 DL |
357 | const char *producer; |
358 | ||
e142c38c DJ |
359 | /* The generic symbol table building routines have separate lists for |
360 | file scope symbols and all all other scopes (local scopes). So | |
361 | we need to select the right one to pass to add_symbol_to_list(). | |
362 | We do it by keeping a pointer to the correct list in list_in_scope. | |
363 | ||
364 | FIXME: The original dwarf code just treated the file scope as the | |
365 | first local scope, and all other local scopes as nested local | |
366 | scopes, and worked fine. Check to see if we really need to | |
367 | distinguish these in buildsym.c. */ | |
368 | struct pending **list_in_scope; | |
369 | ||
f3dd6933 DJ |
370 | /* DWARF abbreviation table associated with this compilation unit. */ |
371 | struct abbrev_info **dwarf2_abbrevs; | |
372 | ||
373 | /* Storage for the abbrev table. */ | |
374 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
375 | |
376 | /* Hash table holding all the loaded partial DIEs. */ | |
377 | htab_t partial_dies; | |
378 | ||
379 | /* Storage for things with the same lifetime as this read-in compilation | |
380 | unit, including partial DIEs. */ | |
381 | struct obstack comp_unit_obstack; | |
382 | ||
ae038cb0 DJ |
383 | /* When multiple dwarf2_cu structures are living in memory, this field |
384 | chains them all together, so that they can be released efficiently. | |
385 | We will probably also want a generation counter so that most-recently-used | |
386 | compilation units are cached... */ | |
387 | struct dwarf2_per_cu_data *read_in_chain; | |
388 | ||
389 | /* Backchain to our per_cu entry if the tree has been built. */ | |
390 | struct dwarf2_per_cu_data *per_cu; | |
391 | ||
392 | /* How many compilation units ago was this CU last referenced? */ | |
393 | int last_used; | |
394 | ||
10b3939b | 395 | /* A hash table of die offsets for following references. */ |
51545339 | 396 | htab_t die_hash; |
10b3939b DJ |
397 | |
398 | /* Full DIEs if read in. */ | |
399 | struct die_info *dies; | |
400 | ||
401 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
402 | units referenced by this one. Only set during full symbol processing; | |
403 | partial symbol tables do not have dependencies. */ | |
404 | htab_t dependencies; | |
405 | ||
cb1df416 DJ |
406 | /* Header data from the line table, during full symbol processing. */ |
407 | struct line_header *line_header; | |
408 | ||
3da10d80 KS |
409 | /* A list of methods which need to have physnames computed |
410 | after all type information has been read. */ | |
411 | VEC (delayed_method_info) *method_list; | |
412 | ||
96408a79 SA |
413 | /* To be copied to symtab->call_site_htab. */ |
414 | htab_t call_site_htab; | |
415 | ||
ae038cb0 DJ |
416 | /* Mark used when releasing cached dies. */ |
417 | unsigned int mark : 1; | |
418 | ||
419 | /* This flag will be set if this compilation unit might include | |
420 | inter-compilation-unit references. */ | |
421 | unsigned int has_form_ref_addr : 1; | |
422 | ||
72bf9492 DJ |
423 | /* This flag will be set if this compilation unit includes any |
424 | DW_TAG_namespace DIEs. If we know that there are explicit | |
425 | DIEs for namespaces, we don't need to try to infer them | |
426 | from mangled names. */ | |
427 | unsigned int has_namespace_info : 1; | |
8be455d7 JK |
428 | |
429 | /* This CU references .debug_loc. See the symtab->locations_valid field. | |
430 | This test is imperfect as there may exist optimized debug code not using | |
431 | any location list and still facing inlining issues if handled as | |
432 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
8be455d7 | 433 | unsigned int has_loclist : 1; |
e7c27a73 DJ |
434 | }; |
435 | ||
10b3939b DJ |
436 | /* Persistent data held for a compilation unit, even when not |
437 | processing it. We put a pointer to this structure in the | |
438 | read_symtab_private field of the psymtab. If we encounter | |
439 | inter-compilation-unit references, we also maintain a sorted | |
440 | list of all compilation units. */ | |
441 | ||
ae038cb0 DJ |
442 | struct dwarf2_per_cu_data |
443 | { | |
348e048f | 444 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 445 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
446 | - if it doesn't, GDB will fall over anyway. |
447 | NOTE: Unlike comp_unit_head.length, this length includes | |
448 | initial_length_size. */ | |
c764a876 | 449 | unsigned int offset; |
348e048f | 450 | unsigned int length : 29; |
ae038cb0 DJ |
451 | |
452 | /* Flag indicating this compilation unit will be read in before | |
453 | any of the current compilation units are processed. */ | |
c764a876 | 454 | unsigned int queued : 1; |
ae038cb0 | 455 | |
5afb4e99 DJ |
456 | /* This flag will be set if we need to load absolutely all DIEs |
457 | for this compilation unit, instead of just the ones we think | |
458 | are interesting. It gets set if we look for a DIE in the | |
459 | hash table and don't find it. */ | |
460 | unsigned int load_all_dies : 1; | |
461 | ||
8b70b953 TT |
462 | /* Non-null if this CU is from .debug_types; in which case it points |
463 | to the section. Otherwise it's from .debug_info. */ | |
b0df02fd | 464 | struct dwarf2_section_info *debug_types_section; |
348e048f | 465 | |
17ea53c3 JK |
466 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
467 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 468 | struct dwarf2_cu *cu; |
1c379e20 | 469 | |
9cdd5dbd DE |
470 | /* The corresponding objfile. |
471 | Normally we can get the objfile from dwarf2_per_objfile. | |
472 | However we can enter this file with just a "per_cu" handle. */ | |
9291a0cd TT |
473 | struct objfile *objfile; |
474 | ||
475 | /* When using partial symbol tables, the 'psymtab' field is active. | |
476 | Otherwise the 'quick' field is active. */ | |
477 | union | |
478 | { | |
479 | /* The partial symbol table associated with this compilation unit, | |
480 | or NULL for partial units (which do not have an associated | |
481 | symtab). */ | |
482 | struct partial_symtab *psymtab; | |
483 | ||
484 | /* Data needed by the "quick" functions. */ | |
485 | struct dwarf2_per_cu_quick_data *quick; | |
486 | } v; | |
ae038cb0 DJ |
487 | }; |
488 | ||
348e048f DE |
489 | /* Entry in the signatured_types hash table. */ |
490 | ||
491 | struct signatured_type | |
492 | { | |
493 | ULONGEST signature; | |
494 | ||
348e048f DE |
495 | /* Offset in .debug_types of the type defined by this TU. */ |
496 | unsigned int type_offset; | |
497 | ||
498 | /* The CU(/TU) of this type. */ | |
499 | struct dwarf2_per_cu_data per_cu; | |
500 | }; | |
501 | ||
0963b4bd MS |
502 | /* Struct used to pass misc. parameters to read_die_and_children, et |
503 | al. which are used for both .debug_info and .debug_types dies. | |
504 | All parameters here are unchanging for the life of the call. This | |
505 | struct exists to abstract away the constant parameters of die | |
506 | reading. */ | |
93311388 DE |
507 | |
508 | struct die_reader_specs | |
509 | { | |
510 | /* The bfd of this objfile. */ | |
511 | bfd* abfd; | |
512 | ||
513 | /* The CU of the DIE we are parsing. */ | |
514 | struct dwarf2_cu *cu; | |
515 | ||
516 | /* Pointer to start of section buffer. | |
517 | This is either the start of .debug_info or .debug_types. */ | |
518 | const gdb_byte *buffer; | |
519 | }; | |
520 | ||
debd256d JB |
521 | /* The line number information for a compilation unit (found in the |
522 | .debug_line section) begins with a "statement program header", | |
523 | which contains the following information. */ | |
524 | struct line_header | |
525 | { | |
526 | unsigned int total_length; | |
527 | unsigned short version; | |
528 | unsigned int header_length; | |
529 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 530 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
531 | unsigned char default_is_stmt; |
532 | int line_base; | |
533 | unsigned char line_range; | |
534 | unsigned char opcode_base; | |
535 | ||
536 | /* standard_opcode_lengths[i] is the number of operands for the | |
537 | standard opcode whose value is i. This means that | |
538 | standard_opcode_lengths[0] is unused, and the last meaningful | |
539 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
540 | unsigned char *standard_opcode_lengths; | |
541 | ||
542 | /* The include_directories table. NOTE! These strings are not | |
543 | allocated with xmalloc; instead, they are pointers into | |
544 | debug_line_buffer. If you try to free them, `free' will get | |
545 | indigestion. */ | |
546 | unsigned int num_include_dirs, include_dirs_size; | |
547 | char **include_dirs; | |
548 | ||
549 | /* The file_names table. NOTE! These strings are not allocated | |
550 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
551 | Don't try to free them directly. */ | |
552 | unsigned int num_file_names, file_names_size; | |
553 | struct file_entry | |
c906108c | 554 | { |
debd256d JB |
555 | char *name; |
556 | unsigned int dir_index; | |
557 | unsigned int mod_time; | |
558 | unsigned int length; | |
aaa75496 | 559 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 560 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
561 | } *file_names; |
562 | ||
563 | /* The start and end of the statement program following this | |
6502dd73 | 564 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 565 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 566 | }; |
c906108c SS |
567 | |
568 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 569 | need this much information. */ |
c906108c SS |
570 | struct partial_die_info |
571 | { | |
72bf9492 | 572 | /* Offset of this DIE. */ |
c906108c | 573 | unsigned int offset; |
72bf9492 DJ |
574 | |
575 | /* DWARF-2 tag for this DIE. */ | |
576 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
577 | ||
72bf9492 DJ |
578 | /* Assorted flags describing the data found in this DIE. */ |
579 | unsigned int has_children : 1; | |
580 | unsigned int is_external : 1; | |
581 | unsigned int is_declaration : 1; | |
582 | unsigned int has_type : 1; | |
583 | unsigned int has_specification : 1; | |
584 | unsigned int has_pc_info : 1; | |
585 | ||
586 | /* Flag set if the SCOPE field of this structure has been | |
587 | computed. */ | |
588 | unsigned int scope_set : 1; | |
589 | ||
fa4028e9 JB |
590 | /* Flag set if the DIE has a byte_size attribute. */ |
591 | unsigned int has_byte_size : 1; | |
592 | ||
98bfdba5 PA |
593 | /* Flag set if any of the DIE's children are template arguments. */ |
594 | unsigned int has_template_arguments : 1; | |
595 | ||
abc72ce4 DE |
596 | /* Flag set if fixup_partial_die has been called on this die. */ |
597 | unsigned int fixup_called : 1; | |
598 | ||
72bf9492 | 599 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 600 | sometimes a default name for unnamed DIEs. */ |
c906108c | 601 | char *name; |
72bf9492 | 602 | |
abc72ce4 DE |
603 | /* The linkage name, if present. */ |
604 | const char *linkage_name; | |
605 | ||
72bf9492 DJ |
606 | /* The scope to prepend to our children. This is generally |
607 | allocated on the comp_unit_obstack, so will disappear | |
608 | when this compilation unit leaves the cache. */ | |
609 | char *scope; | |
610 | ||
611 | /* The location description associated with this DIE, if any. */ | |
612 | struct dwarf_block *locdesc; | |
613 | ||
614 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
615 | CORE_ADDR lowpc; |
616 | CORE_ADDR highpc; | |
72bf9492 | 617 | |
93311388 | 618 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 619 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
620 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
621 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 622 | gdb_byte *sibling; |
72bf9492 DJ |
623 | |
624 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
625 | DW_AT_specification (or DW_AT_abstract_origin or | |
626 | DW_AT_extension). */ | |
627 | unsigned int spec_offset; | |
628 | ||
629 | /* Pointers to this DIE's parent, first child, and next sibling, | |
630 | if any. */ | |
631 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
632 | }; |
633 | ||
0963b4bd | 634 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
635 | struct abbrev_info |
636 | { | |
637 | unsigned int number; /* number identifying abbrev */ | |
638 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
639 | unsigned short has_children; /* boolean */ |
640 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
641 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
642 | struct abbrev_info *next; /* next in chain */ | |
643 | }; | |
644 | ||
645 | struct attr_abbrev | |
646 | { | |
9d25dd43 DE |
647 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
648 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
649 | }; |
650 | ||
0963b4bd | 651 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
652 | struct attribute |
653 | { | |
9d25dd43 | 654 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
655 | ENUM_BITFIELD(dwarf_form) form : 15; |
656 | ||
657 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
658 | field should be in u.str (existing only for DW_STRING) but it is kept | |
659 | here for better struct attribute alignment. */ | |
660 | unsigned int string_is_canonical : 1; | |
661 | ||
b60c80d6 DJ |
662 | union |
663 | { | |
664 | char *str; | |
665 | struct dwarf_block *blk; | |
43bbcdc2 PH |
666 | ULONGEST unsnd; |
667 | LONGEST snd; | |
b60c80d6 | 668 | CORE_ADDR addr; |
348e048f | 669 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
670 | } |
671 | u; | |
672 | }; | |
673 | ||
0963b4bd | 674 | /* This data structure holds a complete die structure. */ |
c906108c SS |
675 | struct die_info |
676 | { | |
76815b17 DE |
677 | /* DWARF-2 tag for this DIE. */ |
678 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
679 | ||
680 | /* Number of attributes */ | |
98bfdba5 PA |
681 | unsigned char num_attrs; |
682 | ||
683 | /* True if we're presently building the full type name for the | |
684 | type derived from this DIE. */ | |
685 | unsigned char building_fullname : 1; | |
76815b17 DE |
686 | |
687 | /* Abbrev number */ | |
688 | unsigned int abbrev; | |
689 | ||
93311388 | 690 | /* Offset in .debug_info or .debug_types section. */ |
76815b17 | 691 | unsigned int offset; |
78ba4af6 JB |
692 | |
693 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
694 | points to this die's parent; CHILD points to the first child of | |
695 | this node; and all the children of a given node are chained | |
4950bc1c | 696 | together via their SIBLING fields. */ |
639d11d3 DC |
697 | struct die_info *child; /* Its first child, if any. */ |
698 | struct die_info *sibling; /* Its next sibling, if any. */ | |
699 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 700 | |
b60c80d6 DJ |
701 | /* An array of attributes, with NUM_ATTRS elements. There may be |
702 | zero, but it's not common and zero-sized arrays are not | |
703 | sufficiently portable C. */ | |
704 | struct attribute attrs[1]; | |
c906108c SS |
705 | }; |
706 | ||
0963b4bd | 707 | /* Get at parts of an attribute structure. */ |
c906108c SS |
708 | |
709 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 710 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
711 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
712 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
713 | #define DW_SND(attr) ((attr)->u.snd) | |
714 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 715 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 716 | |
0963b4bd | 717 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
718 | struct dwarf_block |
719 | { | |
720 | unsigned int size; | |
1d6edc3c JK |
721 | |
722 | /* Valid only if SIZE is not zero. */ | |
fe1b8b76 | 723 | gdb_byte *data; |
c906108c SS |
724 | }; |
725 | ||
c906108c SS |
726 | #ifndef ATTR_ALLOC_CHUNK |
727 | #define ATTR_ALLOC_CHUNK 4 | |
728 | #endif | |
729 | ||
c906108c SS |
730 | /* Allocate fields for structs, unions and enums in this size. */ |
731 | #ifndef DW_FIELD_ALLOC_CHUNK | |
732 | #define DW_FIELD_ALLOC_CHUNK 4 | |
733 | #endif | |
734 | ||
c906108c SS |
735 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
736 | but this would require a corresponding change in unpack_field_as_long | |
737 | and friends. */ | |
738 | static int bits_per_byte = 8; | |
739 | ||
740 | /* The routines that read and process dies for a C struct or C++ class | |
741 | pass lists of data member fields and lists of member function fields | |
742 | in an instance of a field_info structure, as defined below. */ | |
743 | struct field_info | |
c5aa993b | 744 | { |
0963b4bd | 745 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
746 | struct nextfield |
747 | { | |
748 | struct nextfield *next; | |
749 | int accessibility; | |
750 | int virtuality; | |
751 | struct field field; | |
752 | } | |
7d0ccb61 | 753 | *fields, *baseclasses; |
c906108c | 754 | |
7d0ccb61 | 755 | /* Number of fields (including baseclasses). */ |
c5aa993b | 756 | int nfields; |
c906108c | 757 | |
c5aa993b JM |
758 | /* Number of baseclasses. */ |
759 | int nbaseclasses; | |
c906108c | 760 | |
c5aa993b JM |
761 | /* Set if the accesibility of one of the fields is not public. */ |
762 | int non_public_fields; | |
c906108c | 763 | |
c5aa993b JM |
764 | /* Member function fields array, entries are allocated in the order they |
765 | are encountered in the object file. */ | |
766 | struct nextfnfield | |
767 | { | |
768 | struct nextfnfield *next; | |
769 | struct fn_field fnfield; | |
770 | } | |
771 | *fnfields; | |
c906108c | 772 | |
c5aa993b JM |
773 | /* Member function fieldlist array, contains name of possibly overloaded |
774 | member function, number of overloaded member functions and a pointer | |
775 | to the head of the member function field chain. */ | |
776 | struct fnfieldlist | |
777 | { | |
778 | char *name; | |
779 | int length; | |
780 | struct nextfnfield *head; | |
781 | } | |
782 | *fnfieldlists; | |
c906108c | 783 | |
c5aa993b JM |
784 | /* Number of entries in the fnfieldlists array. */ |
785 | int nfnfields; | |
98751a41 JK |
786 | |
787 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
788 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
789 | struct typedef_field_list | |
790 | { | |
791 | struct typedef_field field; | |
792 | struct typedef_field_list *next; | |
793 | } | |
794 | *typedef_field_list; | |
795 | unsigned typedef_field_list_count; | |
c5aa993b | 796 | }; |
c906108c | 797 | |
10b3939b DJ |
798 | /* One item on the queue of compilation units to read in full symbols |
799 | for. */ | |
800 | struct dwarf2_queue_item | |
801 | { | |
802 | struct dwarf2_per_cu_data *per_cu; | |
803 | struct dwarf2_queue_item *next; | |
804 | }; | |
805 | ||
806 | /* The current queue. */ | |
807 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
808 | ||
ae038cb0 DJ |
809 | /* Loaded secondary compilation units are kept in memory until they |
810 | have not been referenced for the processing of this many | |
811 | compilation units. Set this to zero to disable caching. Cache | |
812 | sizes of up to at least twenty will improve startup time for | |
813 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
814 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
815 | static void |
816 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
817 | struct cmd_list_element *c, const char *value) | |
818 | { | |
3e43a32a MS |
819 | fprintf_filtered (file, _("The upper bound on the age of cached " |
820 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
821 | value); |
822 | } | |
823 | ||
ae038cb0 | 824 | |
0963b4bd | 825 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 826 | |
4d3c2250 KB |
827 | static void |
828 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 829 | { |
4d3c2250 | 830 | complaint (&symfile_complaints, |
e2e0b3e5 | 831 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
832 | } |
833 | ||
25e43795 DJ |
834 | static void |
835 | dwarf2_debug_line_missing_file_complaint (void) | |
836 | { | |
837 | complaint (&symfile_complaints, | |
838 | _(".debug_line section has line data without a file")); | |
839 | } | |
840 | ||
59205f5a JB |
841 | static void |
842 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
843 | { | |
844 | complaint (&symfile_complaints, | |
3e43a32a MS |
845 | _(".debug_line section has line " |
846 | "program sequence without an end")); | |
59205f5a JB |
847 | } |
848 | ||
4d3c2250 KB |
849 | static void |
850 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 851 | { |
e2e0b3e5 | 852 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
853 | } |
854 | ||
4d3c2250 KB |
855 | static void |
856 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
857 | int arg3) | |
2e276125 | 858 | { |
4d3c2250 | 859 | complaint (&symfile_complaints, |
3e43a32a MS |
860 | _("const value length mismatch for '%s', got %d, expected %d"), |
861 | arg1, arg2, arg3); | |
4d3c2250 KB |
862 | } |
863 | ||
864 | static void | |
cf2c3c16 | 865 | dwarf2_macros_too_long_complaint (struct dwarf2_section_info *section) |
2e276125 | 866 | { |
4d3c2250 | 867 | complaint (&symfile_complaints, |
cf2c3c16 TT |
868 | _("macro info runs off end of `%s' section"), |
869 | section->asection->name); | |
4d3c2250 KB |
870 | } |
871 | ||
872 | static void | |
873 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 874 | { |
4d3c2250 | 875 | complaint (&symfile_complaints, |
3e43a32a MS |
876 | _("macro debug info contains a " |
877 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
878 | arg1); |
879 | } | |
880 | ||
881 | static void | |
882 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 883 | { |
4d3c2250 | 884 | complaint (&symfile_complaints, |
3e43a32a MS |
885 | _("invalid attribute class or form for '%s' in '%s'"), |
886 | arg1, arg2); | |
4d3c2250 | 887 | } |
c906108c | 888 | |
c906108c SS |
889 | /* local function prototypes */ |
890 | ||
4efb68b1 | 891 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 892 | |
aaa75496 JB |
893 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
894 | struct objfile *); | |
895 | ||
918dd910 JK |
896 | static void dwarf2_find_base_address (struct die_info *die, |
897 | struct dwarf2_cu *cu); | |
898 | ||
c67a9c90 | 899 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 900 | |
72bf9492 DJ |
901 | static void scan_partial_symbols (struct partial_die_info *, |
902 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 903 | int, struct dwarf2_cu *); |
c906108c | 904 | |
72bf9492 DJ |
905 | static void add_partial_symbol (struct partial_die_info *, |
906 | struct dwarf2_cu *); | |
63d06c5c | 907 | |
72bf9492 DJ |
908 | static void add_partial_namespace (struct partial_die_info *pdi, |
909 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 910 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 911 | |
5d7cb8df JK |
912 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
913 | CORE_ADDR *highpc, int need_pc, | |
914 | struct dwarf2_cu *cu); | |
915 | ||
72bf9492 DJ |
916 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
917 | struct dwarf2_cu *cu); | |
91c24f0a | 918 | |
bc30ff58 JB |
919 | static void add_partial_subprogram (struct partial_die_info *pdi, |
920 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 921 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 922 | |
fe1b8b76 | 923 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
93311388 DE |
924 | gdb_byte *buffer, gdb_byte *info_ptr, |
925 | bfd *abfd, struct dwarf2_cu *cu); | |
91c24f0a | 926 | |
a14ed312 | 927 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 928 | |
a14ed312 | 929 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 930 | |
e7c27a73 | 931 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 932 | |
f3dd6933 | 933 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 934 | |
6caca83c CC |
935 | static unsigned int peek_abbrev_code (bfd *, gdb_byte *); |
936 | ||
fe1b8b76 | 937 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 938 | struct dwarf2_cu *); |
72bf9492 | 939 | |
57349743 | 940 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 941 | struct dwarf2_cu *); |
c906108c | 942 | |
93311388 DE |
943 | static struct partial_die_info *load_partial_dies (bfd *, |
944 | gdb_byte *, gdb_byte *, | |
945 | int, struct dwarf2_cu *); | |
72bf9492 | 946 | |
fe1b8b76 | 947 | static gdb_byte *read_partial_die (struct partial_die_info *, |
93311388 DE |
948 | struct abbrev_info *abbrev, |
949 | unsigned int, bfd *, | |
950 | gdb_byte *, gdb_byte *, | |
951 | struct dwarf2_cu *); | |
c906108c | 952 | |
c764a876 | 953 | static struct partial_die_info *find_partial_die (unsigned int, |
10b3939b | 954 | struct dwarf2_cu *); |
72bf9492 DJ |
955 | |
956 | static void fixup_partial_die (struct partial_die_info *, | |
957 | struct dwarf2_cu *); | |
958 | ||
fe1b8b76 JB |
959 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
960 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 961 | |
fe1b8b76 JB |
962 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
963 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 964 | |
fe1b8b76 | 965 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 966 | |
fe1b8b76 | 967 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 968 | |
fe1b8b76 | 969 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 970 | |
fe1b8b76 | 971 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 972 | |
93311388 | 973 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 974 | |
fe1b8b76 | 975 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 976 | unsigned int *); |
c906108c | 977 | |
c764a876 DE |
978 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
979 | ||
980 | static LONGEST read_checked_initial_length_and_offset | |
981 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
982 | unsigned int *, unsigned int *); | |
613e1657 | 983 | |
fe1b8b76 | 984 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
985 | unsigned int *); |
986 | ||
987 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 988 | |
fe1b8b76 | 989 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 990 | |
9b1c24c8 | 991 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 992 | |
fe1b8b76 JB |
993 | static char *read_indirect_string (bfd *, gdb_byte *, |
994 | const struct comp_unit_head *, | |
995 | unsigned int *); | |
4bdf3d34 | 996 | |
fe1b8b76 | 997 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 998 | |
fe1b8b76 | 999 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 1000 | |
fe1b8b76 | 1001 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 1002 | |
e142c38c | 1003 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1004 | |
e142c38c DJ |
1005 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1006 | struct dwarf2_cu *); | |
c906108c | 1007 | |
348e048f DE |
1008 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
1009 | unsigned int, | |
1010 | struct dwarf2_cu *); | |
1011 | ||
05cf31d1 JB |
1012 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1013 | struct dwarf2_cu *cu); | |
1014 | ||
e142c38c | 1015 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1016 | |
e142c38c | 1017 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1018 | struct dwarf2_cu **); |
63d06c5c | 1019 | |
debd256d JB |
1020 | static void free_line_header (struct line_header *lh); |
1021 | ||
aaa75496 JB |
1022 | static void add_file_name (struct line_header *, char *, unsigned int, |
1023 | unsigned int, unsigned int); | |
1024 | ||
debd256d JB |
1025 | static struct line_header *(dwarf_decode_line_header |
1026 | (unsigned int offset, | |
e7c27a73 | 1027 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d | 1028 | |
72b9f47f | 1029 | static void dwarf_decode_lines (struct line_header *, const char *, bfd *, |
aaa75496 | 1030 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 1031 | |
72b9f47f | 1032 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 1033 | |
a14ed312 | 1034 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1035 | struct dwarf2_cu *); |
c906108c | 1036 | |
34eaf542 TT |
1037 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1038 | struct dwarf2_cu *, struct symbol *); | |
1039 | ||
a14ed312 | 1040 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1041 | struct dwarf2_cu *); |
c906108c | 1042 | |
98bfdba5 PA |
1043 | static void dwarf2_const_value_attr (struct attribute *attr, |
1044 | struct type *type, | |
1045 | const char *name, | |
1046 | struct obstack *obstack, | |
1047 | struct dwarf2_cu *cu, long *value, | |
1048 | gdb_byte **bytes, | |
1049 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1050 | |
e7c27a73 | 1051 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1052 | |
b4ba55a1 JB |
1053 | static int need_gnat_info (struct dwarf2_cu *); |
1054 | ||
3e43a32a MS |
1055 | static struct type *die_descriptive_type (struct die_info *, |
1056 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1057 | |
1058 | static void set_descriptive_type (struct type *, struct die_info *, | |
1059 | struct dwarf2_cu *); | |
1060 | ||
e7c27a73 DJ |
1061 | static struct type *die_containing_type (struct die_info *, |
1062 | struct dwarf2_cu *); | |
c906108c | 1063 | |
673bfd45 DE |
1064 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1065 | struct dwarf2_cu *); | |
c906108c | 1066 | |
f792889a | 1067 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1068 | |
673bfd45 DE |
1069 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1070 | ||
086ed43d | 1071 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1072 | |
6e70227d | 1073 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1074 | const char *suffix, int physname, |
1075 | struct dwarf2_cu *cu); | |
63d06c5c | 1076 | |
e7c27a73 | 1077 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1078 | |
348e048f DE |
1079 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1080 | ||
e7c27a73 | 1081 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1082 | |
e7c27a73 | 1083 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1084 | |
96408a79 SA |
1085 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1086 | ||
ff013f42 JK |
1087 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1088 | struct dwarf2_cu *, struct partial_symtab *); | |
1089 | ||
a14ed312 | 1090 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1091 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1092 | struct partial_symtab *); | |
c906108c | 1093 | |
fae299cd DC |
1094 | static void get_scope_pc_bounds (struct die_info *, |
1095 | CORE_ADDR *, CORE_ADDR *, | |
1096 | struct dwarf2_cu *); | |
1097 | ||
801e3a5b JB |
1098 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1099 | CORE_ADDR, struct dwarf2_cu *); | |
1100 | ||
a14ed312 | 1101 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1102 | struct dwarf2_cu *); |
c906108c | 1103 | |
a14ed312 | 1104 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1105 | struct type *, struct dwarf2_cu *); |
c906108c | 1106 | |
a14ed312 | 1107 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1108 | struct die_info *, struct type *, |
e7c27a73 | 1109 | struct dwarf2_cu *); |
c906108c | 1110 | |
a14ed312 | 1111 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1112 | struct type *, |
1113 | struct dwarf2_cu *); | |
c906108c | 1114 | |
134d01f1 | 1115 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1116 | |
e7c27a73 | 1117 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1118 | |
e7c27a73 | 1119 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1120 | |
5d7cb8df JK |
1121 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1122 | ||
27aa8d6a SW |
1123 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1124 | ||
f55ee35c JK |
1125 | static struct type *read_module_type (struct die_info *die, |
1126 | struct dwarf2_cu *cu); | |
1127 | ||
38d518c9 | 1128 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1129 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1130 | |
134d01f1 | 1131 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1132 | |
e7c27a73 | 1133 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1134 | |
6e70227d | 1135 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1136 | struct dwarf2_cu *); |
1137 | ||
93311388 | 1138 | static struct die_info *read_comp_unit (gdb_byte *, struct dwarf2_cu *); |
c906108c | 1139 | |
93311388 DE |
1140 | static struct die_info *read_die_and_children_1 (const struct die_reader_specs *reader, |
1141 | gdb_byte *info_ptr, | |
d97bc12b DE |
1142 | gdb_byte **new_info_ptr, |
1143 | struct die_info *parent); | |
1144 | ||
93311388 DE |
1145 | static struct die_info *read_die_and_children (const struct die_reader_specs *reader, |
1146 | gdb_byte *info_ptr, | |
fe1b8b76 | 1147 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1148 | struct die_info *parent); |
1149 | ||
93311388 DE |
1150 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *reader, |
1151 | gdb_byte *info_ptr, | |
fe1b8b76 | 1152 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1153 | struct die_info *parent); |
1154 | ||
93311388 DE |
1155 | static gdb_byte *read_full_die (const struct die_reader_specs *reader, |
1156 | struct die_info **, gdb_byte *, | |
1157 | int *); | |
1158 | ||
e7c27a73 | 1159 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1160 | |
71c25dea TT |
1161 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1162 | struct obstack *); | |
1163 | ||
e142c38c | 1164 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1165 | |
98bfdba5 PA |
1166 | static const char *dwarf2_full_name (char *name, |
1167 | struct die_info *die, | |
1168 | struct dwarf2_cu *cu); | |
1169 | ||
e142c38c | 1170 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1171 | struct dwarf2_cu **); |
9219021c | 1172 | |
a14ed312 | 1173 | static char *dwarf_tag_name (unsigned int); |
c906108c | 1174 | |
a14ed312 | 1175 | static char *dwarf_attr_name (unsigned int); |
c906108c | 1176 | |
a14ed312 | 1177 | static char *dwarf_form_name (unsigned int); |
c906108c | 1178 | |
a14ed312 | 1179 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1180 | |
a14ed312 | 1181 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
1182 | |
1183 | #if 0 | |
a14ed312 | 1184 | static char *dwarf_cfi_name (unsigned int); |
c906108c SS |
1185 | #endif |
1186 | ||
f9aca02d | 1187 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1188 | |
d97bc12b DE |
1189 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1190 | ||
1191 | static void dump_die_for_error (struct die_info *); | |
1192 | ||
1193 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1194 | struct die_info *); | |
c906108c | 1195 | |
d97bc12b | 1196 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1197 | |
51545339 | 1198 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1199 | struct dwarf2_cu *); |
c906108c | 1200 | |
93311388 DE |
1201 | static int is_ref_attr (struct attribute *); |
1202 | ||
c764a876 | 1203 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1204 | |
43bbcdc2 | 1205 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1206 | |
348e048f DE |
1207 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1208 | struct attribute *, | |
1209 | struct dwarf2_cu **); | |
1210 | ||
10b3939b DJ |
1211 | static struct die_info *follow_die_ref (struct die_info *, |
1212 | struct attribute *, | |
f2f0e013 | 1213 | struct dwarf2_cu **); |
c906108c | 1214 | |
348e048f DE |
1215 | static struct die_info *follow_die_sig (struct die_info *, |
1216 | struct attribute *, | |
1217 | struct dwarf2_cu **); | |
1218 | ||
6c83ed52 TT |
1219 | static struct signatured_type *lookup_signatured_type_at_offset |
1220 | (struct objfile *objfile, | |
1221 | struct dwarf2_section_info *section, | |
1222 | unsigned int offset); | |
1223 | ||
348e048f | 1224 | static void read_signatured_type_at_offset (struct objfile *objfile, |
8b70b953 | 1225 | struct dwarf2_section_info *sect, |
348e048f DE |
1226 | unsigned int offset); |
1227 | ||
a0f42c21 | 1228 | static void read_signatured_type (struct signatured_type *type_sig); |
348e048f | 1229 | |
c906108c SS |
1230 | /* memory allocation interface */ |
1231 | ||
7b5a2f43 | 1232 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1233 | |
f3dd6933 | 1234 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1235 | |
b60c80d6 | 1236 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1237 | |
2e276125 | 1238 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
cf2c3c16 TT |
1239 | char *, bfd *, struct dwarf2_cu *, |
1240 | struct dwarf2_section_info *, | |
1241 | int); | |
2e276125 | 1242 | |
8e19ed76 PS |
1243 | static int attr_form_is_block (struct attribute *); |
1244 | ||
3690dd37 JB |
1245 | static int attr_form_is_section_offset (struct attribute *); |
1246 | ||
1247 | static int attr_form_is_constant (struct attribute *); | |
1248 | ||
8cf6f0b1 TT |
1249 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1250 | struct dwarf2_loclist_baton *baton, | |
1251 | struct attribute *attr); | |
1252 | ||
93e7bd98 DJ |
1253 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1254 | struct symbol *sym, | |
1255 | struct dwarf2_cu *cu); | |
4c2df51b | 1256 | |
93311388 DE |
1257 | static gdb_byte *skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
1258 | struct abbrev_info *abbrev, | |
1259 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1260 | |
72bf9492 DJ |
1261 | static void free_stack_comp_unit (void *); |
1262 | ||
72bf9492 DJ |
1263 | static hashval_t partial_die_hash (const void *item); |
1264 | ||
1265 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1266 | ||
ae038cb0 | 1267 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
c764a876 | 1268 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 DJ |
1269 | |
1270 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
c764a876 | 1271 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 | 1272 | |
9816fde3 JK |
1273 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
1274 | struct objfile *objfile); | |
1275 | ||
1276 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
1277 | struct die_info *comp_unit_die); | |
93311388 | 1278 | |
68dc6402 | 1279 | static void free_heap_comp_unit (void *); |
ae038cb0 DJ |
1280 | |
1281 | static void free_cached_comp_units (void *); | |
1282 | ||
1283 | static void age_cached_comp_units (void); | |
1284 | ||
1285 | static void free_one_cached_comp_unit (void *); | |
1286 | ||
f792889a DJ |
1287 | static struct type *set_die_type (struct die_info *, struct type *, |
1288 | struct dwarf2_cu *); | |
1c379e20 | 1289 | |
ae038cb0 DJ |
1290 | static void create_all_comp_units (struct objfile *); |
1291 | ||
1fd400ff TT |
1292 | static int create_debug_types_hash_table (struct objfile *objfile); |
1293 | ||
a0f42c21 | 1294 | static void load_full_comp_unit (struct dwarf2_per_cu_data *); |
10b3939b DJ |
1295 | |
1296 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1297 | ||
1298 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1299 | struct dwarf2_per_cu_data *); | |
1300 | ||
ae038cb0 DJ |
1301 | static void dwarf2_mark (struct dwarf2_cu *); |
1302 | ||
1303 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1304 | ||
673bfd45 DE |
1305 | static struct type *get_die_type_at_offset (unsigned int, |
1306 | struct dwarf2_per_cu_data *per_cu); | |
1307 | ||
f792889a | 1308 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1309 | |
9291a0cd TT |
1310 | static void dwarf2_release_queue (void *dummy); |
1311 | ||
a0f42c21 | 1312 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu); |
9291a0cd | 1313 | |
a0f42c21 | 1314 | static void process_queue (void); |
9291a0cd TT |
1315 | |
1316 | static void find_file_and_directory (struct die_info *die, | |
1317 | struct dwarf2_cu *cu, | |
1318 | char **name, char **comp_dir); | |
1319 | ||
1320 | static char *file_full_name (int file, struct line_header *lh, | |
1321 | const char *comp_dir); | |
1322 | ||
1323 | static gdb_byte *partial_read_comp_unit_head (struct comp_unit_head *header, | |
1324 | gdb_byte *info_ptr, | |
1325 | gdb_byte *buffer, | |
1326 | unsigned int buffer_size, | |
460c1c54 | 1327 | bfd *abfd, |
b0df02fd | 1328 | int is_debug_types_section); |
9291a0cd TT |
1329 | |
1330 | static void init_cu_die_reader (struct die_reader_specs *reader, | |
1331 | struct dwarf2_cu *cu); | |
1332 | ||
673bfd45 | 1333 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1334 | |
9291a0cd TT |
1335 | #if WORDS_BIGENDIAN |
1336 | ||
1337 | /* Convert VALUE between big- and little-endian. */ | |
1338 | static offset_type | |
1339 | byte_swap (offset_type value) | |
1340 | { | |
1341 | offset_type result; | |
1342 | ||
1343 | result = (value & 0xff) << 24; | |
1344 | result |= (value & 0xff00) << 8; | |
1345 | result |= (value & 0xff0000) >> 8; | |
1346 | result |= (value & 0xff000000) >> 24; | |
1347 | return result; | |
1348 | } | |
1349 | ||
1350 | #define MAYBE_SWAP(V) byte_swap (V) | |
1351 | ||
1352 | #else | |
1353 | #define MAYBE_SWAP(V) (V) | |
1354 | #endif /* WORDS_BIGENDIAN */ | |
1355 | ||
1356 | /* The suffix for an index file. */ | |
1357 | #define INDEX_SUFFIX ".gdb-index" | |
1358 | ||
3da10d80 KS |
1359 | static const char *dwarf2_physname (char *name, struct die_info *die, |
1360 | struct dwarf2_cu *cu); | |
1361 | ||
c906108c | 1362 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
1363 | information and return true if we have enough to do something. |
1364 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
1365 | ELF names are used. */ | |
c906108c SS |
1366 | |
1367 | int | |
251d32d9 TG |
1368 | dwarf2_has_info (struct objfile *objfile, |
1369 | const struct dwarf2_debug_sections *names) | |
c906108c | 1370 | { |
be391dca TT |
1371 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1372 | if (!dwarf2_per_objfile) | |
1373 | { | |
1374 | /* Initialize per-objfile state. */ | |
1375 | struct dwarf2_per_objfile *data | |
1376 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1377 | |
be391dca TT |
1378 | memset (data, 0, sizeof (*data)); |
1379 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1380 | dwarf2_per_objfile = data; | |
6502dd73 | 1381 | |
251d32d9 TG |
1382 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, |
1383 | (void *) names); | |
be391dca TT |
1384 | dwarf2_per_objfile->objfile = objfile; |
1385 | } | |
1386 | return (dwarf2_per_objfile->info.asection != NULL | |
1387 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1388 | } |
1389 | ||
251d32d9 TG |
1390 | /* When loading sections, we look either for uncompressed section or for |
1391 | compressed section names. */ | |
233a11ab CS |
1392 | |
1393 | static int | |
251d32d9 TG |
1394 | section_is_p (const char *section_name, |
1395 | const struct dwarf2_section_names *names) | |
233a11ab | 1396 | { |
251d32d9 TG |
1397 | if (names->normal != NULL |
1398 | && strcmp (section_name, names->normal) == 0) | |
1399 | return 1; | |
1400 | if (names->compressed != NULL | |
1401 | && strcmp (section_name, names->compressed) == 0) | |
1402 | return 1; | |
1403 | return 0; | |
233a11ab CS |
1404 | } |
1405 | ||
c906108c SS |
1406 | /* This function is mapped across the sections and remembers the |
1407 | offset and size of each of the debugging sections we are interested | |
1408 | in. */ | |
1409 | ||
1410 | static void | |
251d32d9 | 1411 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *vnames) |
c906108c | 1412 | { |
251d32d9 TG |
1413 | const struct dwarf2_debug_sections *names; |
1414 | ||
1415 | if (vnames == NULL) | |
1416 | names = &dwarf2_elf_names; | |
1417 | else | |
1418 | names = (const struct dwarf2_debug_sections *) vnames; | |
1419 | ||
1420 | if (section_is_p (sectp->name, &names->info)) | |
c906108c | 1421 | { |
dce234bc PP |
1422 | dwarf2_per_objfile->info.asection = sectp; |
1423 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1424 | } |
251d32d9 | 1425 | else if (section_is_p (sectp->name, &names->abbrev)) |
c906108c | 1426 | { |
dce234bc PP |
1427 | dwarf2_per_objfile->abbrev.asection = sectp; |
1428 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1429 | } |
251d32d9 | 1430 | else if (section_is_p (sectp->name, &names->line)) |
c906108c | 1431 | { |
dce234bc PP |
1432 | dwarf2_per_objfile->line.asection = sectp; |
1433 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1434 | } |
251d32d9 | 1435 | else if (section_is_p (sectp->name, &names->loc)) |
c906108c | 1436 | { |
dce234bc PP |
1437 | dwarf2_per_objfile->loc.asection = sectp; |
1438 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1439 | } |
251d32d9 | 1440 | else if (section_is_p (sectp->name, &names->macinfo)) |
c906108c | 1441 | { |
dce234bc PP |
1442 | dwarf2_per_objfile->macinfo.asection = sectp; |
1443 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1444 | } |
cf2c3c16 TT |
1445 | else if (section_is_p (sectp->name, &names->macro)) |
1446 | { | |
1447 | dwarf2_per_objfile->macro.asection = sectp; | |
1448 | dwarf2_per_objfile->macro.size = bfd_get_section_size (sectp); | |
1449 | } | |
251d32d9 | 1450 | else if (section_is_p (sectp->name, &names->str)) |
c906108c | 1451 | { |
dce234bc PP |
1452 | dwarf2_per_objfile->str.asection = sectp; |
1453 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1454 | } |
251d32d9 | 1455 | else if (section_is_p (sectp->name, &names->frame)) |
b6af0555 | 1456 | { |
dce234bc PP |
1457 | dwarf2_per_objfile->frame.asection = sectp; |
1458 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1459 | } |
251d32d9 | 1460 | else if (section_is_p (sectp->name, &names->eh_frame)) |
b6af0555 | 1461 | { |
3799ccc6 | 1462 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
9a619af0 | 1463 | |
3799ccc6 EZ |
1464 | if (aflag & SEC_HAS_CONTENTS) |
1465 | { | |
dce234bc PP |
1466 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1467 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1468 | } |
b6af0555 | 1469 | } |
251d32d9 | 1470 | else if (section_is_p (sectp->name, &names->ranges)) |
af34e669 | 1471 | { |
dce234bc PP |
1472 | dwarf2_per_objfile->ranges.asection = sectp; |
1473 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1474 | } |
251d32d9 | 1475 | else if (section_is_p (sectp->name, &names->types)) |
348e048f | 1476 | { |
8b70b953 TT |
1477 | struct dwarf2_section_info type_section; |
1478 | ||
1479 | memset (&type_section, 0, sizeof (type_section)); | |
1480 | type_section.asection = sectp; | |
1481 | type_section.size = bfd_get_section_size (sectp); | |
1482 | ||
1483 | VEC_safe_push (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
1484 | &type_section); | |
348e048f | 1485 | } |
251d32d9 | 1486 | else if (section_is_p (sectp->name, &names->gdb_index)) |
9291a0cd TT |
1487 | { |
1488 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1489 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1490 | } | |
dce234bc | 1491 | |
72dca2f5 FR |
1492 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1493 | && bfd_section_vma (abfd, sectp) == 0) | |
1494 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1495 | } |
1496 | ||
dce234bc PP |
1497 | /* Decompress a section that was compressed using zlib. Store the |
1498 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1499 | |
1500 | static void | |
dce234bc PP |
1501 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1502 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1503 | { | |
1504 | bfd *abfd = objfile->obfd; | |
1505 | #ifndef HAVE_ZLIB_H | |
1506 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1507 | "is disabled in this copy of GDB"), | |
1508 | bfd_get_filename (abfd)); | |
1509 | #else | |
1510 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1511 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1512 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1513 | bfd_size_type uncompressed_size; |
1514 | gdb_byte *uncompressed_buffer; | |
1515 | z_stream strm; | |
1516 | int rc; | |
1517 | int header_size = 12; | |
1518 | ||
1519 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
3e43a32a MS |
1520 | || bfd_bread (compressed_buffer, |
1521 | compressed_size, abfd) != compressed_size) | |
dce234bc PP |
1522 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
1523 | bfd_get_filename (abfd)); | |
1524 | ||
1525 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1526 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1527 | if (compressed_size < header_size | |
1528 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1529 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1530 | bfd_get_filename (abfd)); | |
1531 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1532 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1533 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1534 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1535 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1536 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1537 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1538 | uncompressed_size += compressed_buffer[11]; | |
1539 | ||
1540 | /* It is possible the section consists of several compressed | |
1541 | buffers concatenated together, so we uncompress in a loop. */ | |
1542 | strm.zalloc = NULL; | |
1543 | strm.zfree = NULL; | |
1544 | strm.opaque = NULL; | |
1545 | strm.avail_in = compressed_size - header_size; | |
1546 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1547 | strm.avail_out = uncompressed_size; | |
1548 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1549 | uncompressed_size); | |
1550 | rc = inflateInit (&strm); | |
1551 | while (strm.avail_in > 0) | |
1552 | { | |
1553 | if (rc != Z_OK) | |
1554 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1555 | bfd_get_filename (abfd), rc); | |
1556 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1557 | + (uncompressed_size - strm.avail_out)); | |
1558 | rc = inflate (&strm, Z_FINISH); | |
1559 | if (rc != Z_STREAM_END) | |
1560 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1561 | bfd_get_filename (abfd), rc); | |
1562 | rc = inflateReset (&strm); | |
1563 | } | |
1564 | rc = inflateEnd (&strm); | |
1565 | if (rc != Z_OK | |
1566 | || strm.avail_out != 0) | |
1567 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1568 | bfd_get_filename (abfd), rc); | |
1569 | ||
affddf13 | 1570 | do_cleanups (cleanup); |
dce234bc PP |
1571 | *outbuf = uncompressed_buffer; |
1572 | *outsize = uncompressed_size; | |
1573 | #endif | |
233a11ab CS |
1574 | } |
1575 | ||
9e0ac564 TT |
1576 | /* A helper function that decides whether a section is empty. */ |
1577 | ||
1578 | static int | |
1579 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1580 | { | |
1581 | return info->asection == NULL || info->size == 0; | |
1582 | } | |
1583 | ||
9cdd5dbd | 1584 | /* Read the contents of the section INFO from object file specified by |
dce234bc PP |
1585 | OBJFILE, store info about the section into INFO. |
1586 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 1587 | |
dce234bc PP |
1588 | static void |
1589 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1590 | { |
dce234bc PP |
1591 | bfd *abfd = objfile->obfd; |
1592 | asection *sectp = info->asection; | |
1593 | gdb_byte *buf, *retbuf; | |
1594 | unsigned char header[4]; | |
c906108c | 1595 | |
be391dca TT |
1596 | if (info->readin) |
1597 | return; | |
dce234bc | 1598 | info->buffer = NULL; |
b315ab21 | 1599 | info->map_addr = NULL; |
be391dca | 1600 | info->readin = 1; |
188dd5d6 | 1601 | |
9e0ac564 | 1602 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1603 | return; |
c906108c | 1604 | |
dce234bc PP |
1605 | /* Check if the file has a 4-byte header indicating compression. */ |
1606 | if (info->size > sizeof (header) | |
1607 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1608 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1609 | { | |
1610 | /* Upon decompression, update the buffer and its size. */ | |
1611 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1612 | { | |
1613 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1614 | &info->size); | |
1615 | return; | |
1616 | } | |
1617 | } | |
4bdf3d34 | 1618 | |
dce234bc PP |
1619 | #ifdef HAVE_MMAP |
1620 | if (pagesize == 0) | |
1621 | pagesize = getpagesize (); | |
2e276125 | 1622 | |
dce234bc PP |
1623 | /* Only try to mmap sections which are large enough: we don't want to |
1624 | waste space due to fragmentation. Also, only try mmap for sections | |
1625 | without relocations. */ | |
1626 | ||
1627 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1628 | { | |
b315ab21 TG |
1629 | info->buffer = bfd_mmap (abfd, 0, info->size, PROT_READ, |
1630 | MAP_PRIVATE, sectp->filepos, | |
1631 | &info->map_addr, &info->map_len); | |
dce234bc | 1632 | |
b315ab21 | 1633 | if ((caddr_t)info->buffer != MAP_FAILED) |
dce234bc | 1634 | { |
be391dca | 1635 | #if HAVE_POSIX_MADVISE |
b315ab21 | 1636 | posix_madvise (info->map_addr, info->map_len, POSIX_MADV_WILLNEED); |
be391dca | 1637 | #endif |
dce234bc PP |
1638 | return; |
1639 | } | |
1640 | } | |
1641 | #endif | |
1642 | ||
1643 | /* If we get here, we are a normal, not-compressed section. */ | |
1644 | info->buffer = buf | |
1645 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1646 | ||
1647 | /* When debugging .o files, we may need to apply relocations; see | |
1648 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1649 | We never compress sections in .o files, so we only need to | |
1650 | try this when the section is not compressed. */ | |
ac8035ab | 1651 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1652 | if (retbuf != NULL) |
1653 | { | |
1654 | info->buffer = retbuf; | |
1655 | return; | |
1656 | } | |
1657 | ||
1658 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1659 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1660 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1661 | bfd_get_filename (abfd)); | |
1662 | } | |
1663 | ||
9e0ac564 TT |
1664 | /* A helper function that returns the size of a section in a safe way. |
1665 | If you are positive that the section has been read before using the | |
1666 | size, then it is safe to refer to the dwarf2_section_info object's | |
1667 | "size" field directly. In other cases, you must call this | |
1668 | function, because for compressed sections the size field is not set | |
1669 | correctly until the section has been read. */ | |
1670 | ||
1671 | static bfd_size_type | |
1672 | dwarf2_section_size (struct objfile *objfile, | |
1673 | struct dwarf2_section_info *info) | |
1674 | { | |
1675 | if (!info->readin) | |
1676 | dwarf2_read_section (objfile, info); | |
1677 | return info->size; | |
1678 | } | |
1679 | ||
dce234bc | 1680 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1681 | SECTION_NAME. */ |
af34e669 | 1682 | |
dce234bc | 1683 | void |
3017a003 TG |
1684 | dwarf2_get_section_info (struct objfile *objfile, |
1685 | enum dwarf2_section_enum sect, | |
dce234bc PP |
1686 | asection **sectp, gdb_byte **bufp, |
1687 | bfd_size_type *sizep) | |
1688 | { | |
1689 | struct dwarf2_per_objfile *data | |
1690 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1691 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1692 | |
1693 | /* We may see an objfile without any DWARF, in which case we just | |
1694 | return nothing. */ | |
1695 | if (data == NULL) | |
1696 | { | |
1697 | *sectp = NULL; | |
1698 | *bufp = NULL; | |
1699 | *sizep = 0; | |
1700 | return; | |
1701 | } | |
3017a003 TG |
1702 | switch (sect) |
1703 | { | |
1704 | case DWARF2_DEBUG_FRAME: | |
1705 | info = &data->frame; | |
1706 | break; | |
1707 | case DWARF2_EH_FRAME: | |
1708 | info = &data->eh_frame; | |
1709 | break; | |
1710 | default: | |
1711 | gdb_assert_not_reached ("unexpected section"); | |
1712 | } | |
dce234bc | 1713 | |
9e0ac564 | 1714 | dwarf2_read_section (objfile, info); |
dce234bc PP |
1715 | |
1716 | *sectp = info->asection; | |
1717 | *bufp = info->buffer; | |
1718 | *sizep = info->size; | |
1719 | } | |
1720 | ||
9291a0cd | 1721 | \f |
7b9f3c50 DE |
1722 | /* DWARF quick_symbols_functions support. */ |
1723 | ||
1724 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
1725 | unique line tables, so we maintain a separate table of all .debug_line | |
1726 | derived entries to support the sharing. | |
1727 | All the quick functions need is the list of file names. We discard the | |
1728 | line_header when we're done and don't need to record it here. */ | |
1729 | struct quick_file_names | |
1730 | { | |
1731 | /* The offset in .debug_line of the line table. We hash on this. */ | |
1732 | unsigned int offset; | |
1733 | ||
1734 | /* The number of entries in file_names, real_names. */ | |
1735 | unsigned int num_file_names; | |
1736 | ||
1737 | /* The file names from the line table, after being run through | |
1738 | file_full_name. */ | |
1739 | const char **file_names; | |
1740 | ||
1741 | /* The file names from the line table after being run through | |
1742 | gdb_realpath. These are computed lazily. */ | |
1743 | const char **real_names; | |
1744 | }; | |
1745 | ||
1746 | /* When using the index (and thus not using psymtabs), each CU has an | |
1747 | object of this type. This is used to hold information needed by | |
1748 | the various "quick" methods. */ | |
1749 | struct dwarf2_per_cu_quick_data | |
1750 | { | |
1751 | /* The file table. This can be NULL if there was no file table | |
1752 | or it's currently not read in. | |
1753 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
1754 | struct quick_file_names *file_names; | |
1755 | ||
1756 | /* The corresponding symbol table. This is NULL if symbols for this | |
1757 | CU have not yet been read. */ | |
1758 | struct symtab *symtab; | |
1759 | ||
1760 | /* A temporary mark bit used when iterating over all CUs in | |
1761 | expand_symtabs_matching. */ | |
1762 | unsigned int mark : 1; | |
1763 | ||
1764 | /* True if we've tried to read the file table and found there isn't one. | |
1765 | There will be no point in trying to read it again next time. */ | |
1766 | unsigned int no_file_data : 1; | |
1767 | }; | |
1768 | ||
1769 | /* Hash function for a quick_file_names. */ | |
1770 | ||
1771 | static hashval_t | |
1772 | hash_file_name_entry (const void *e) | |
1773 | { | |
1774 | const struct quick_file_names *file_data = e; | |
1775 | ||
1776 | return file_data->offset; | |
1777 | } | |
1778 | ||
1779 | /* Equality function for a quick_file_names. */ | |
1780 | ||
1781 | static int | |
1782 | eq_file_name_entry (const void *a, const void *b) | |
1783 | { | |
1784 | const struct quick_file_names *ea = a; | |
1785 | const struct quick_file_names *eb = b; | |
1786 | ||
1787 | return ea->offset == eb->offset; | |
1788 | } | |
1789 | ||
1790 | /* Delete function for a quick_file_names. */ | |
1791 | ||
1792 | static void | |
1793 | delete_file_name_entry (void *e) | |
1794 | { | |
1795 | struct quick_file_names *file_data = e; | |
1796 | int i; | |
1797 | ||
1798 | for (i = 0; i < file_data->num_file_names; ++i) | |
1799 | { | |
1800 | xfree ((void*) file_data->file_names[i]); | |
1801 | if (file_data->real_names) | |
1802 | xfree ((void*) file_data->real_names[i]); | |
1803 | } | |
1804 | ||
1805 | /* The space for the struct itself lives on objfile_obstack, | |
1806 | so we don't free it here. */ | |
1807 | } | |
1808 | ||
1809 | /* Create a quick_file_names hash table. */ | |
1810 | ||
1811 | static htab_t | |
1812 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
1813 | { | |
1814 | return htab_create_alloc (nr_initial_entries, | |
1815 | hash_file_name_entry, eq_file_name_entry, | |
1816 | delete_file_name_entry, xcalloc, xfree); | |
1817 | } | |
9291a0cd | 1818 | |
918dd910 JK |
1819 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
1820 | have to be created afterwards. You should call age_cached_comp_units after | |
1821 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
1822 | ||
1823 | static void | |
1824 | load_cu (struct dwarf2_per_cu_data *per_cu) | |
1825 | { | |
b0df02fd | 1826 | if (per_cu->debug_types_section) |
8b70b953 | 1827 | read_signatured_type_at_offset (per_cu->objfile, |
b0df02fd | 1828 | per_cu->debug_types_section, |
8b70b953 | 1829 | per_cu->offset); |
918dd910 | 1830 | else |
a0f42c21 | 1831 | load_full_comp_unit (per_cu); |
918dd910 | 1832 | |
918dd910 | 1833 | gdb_assert (per_cu->cu != NULL); |
2dc860c0 DE |
1834 | |
1835 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
1836 | } |
1837 | ||
a0f42c21 | 1838 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 1839 | |
9291a0cd | 1840 | static void |
a0f42c21 | 1841 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
1842 | { |
1843 | struct cleanup *back_to; | |
1844 | ||
1845 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
1846 | ||
a0f42c21 | 1847 | queue_comp_unit (per_cu); |
9291a0cd | 1848 | |
918dd910 | 1849 | load_cu (per_cu); |
9291a0cd | 1850 | |
a0f42c21 | 1851 | process_queue (); |
9291a0cd TT |
1852 | |
1853 | /* Age the cache, releasing compilation units that have not | |
1854 | been used recently. */ | |
1855 | age_cached_comp_units (); | |
1856 | ||
1857 | do_cleanups (back_to); | |
1858 | } | |
1859 | ||
1860 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
1861 | the objfile from which this CU came. Returns the resulting symbol | |
1862 | table. */ | |
2fdf6df6 | 1863 | |
9291a0cd | 1864 | static struct symtab * |
a0f42c21 | 1865 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu) |
9291a0cd TT |
1866 | { |
1867 | if (!per_cu->v.quick->symtab) | |
1868 | { | |
1869 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
1870 | increment_reading_symtab (); | |
a0f42c21 | 1871 | dw2_do_instantiate_symtab (per_cu); |
9291a0cd TT |
1872 | do_cleanups (back_to); |
1873 | } | |
1874 | return per_cu->v.quick->symtab; | |
1875 | } | |
1876 | ||
1fd400ff | 1877 | /* Return the CU given its index. */ |
2fdf6df6 | 1878 | |
1fd400ff TT |
1879 | static struct dwarf2_per_cu_data * |
1880 | dw2_get_cu (int index) | |
1881 | { | |
1882 | if (index >= dwarf2_per_objfile->n_comp_units) | |
1883 | { | |
1884 | index -= dwarf2_per_objfile->n_comp_units; | |
1885 | return dwarf2_per_objfile->type_comp_units[index]; | |
1886 | } | |
1887 | return dwarf2_per_objfile->all_comp_units[index]; | |
1888 | } | |
1889 | ||
9291a0cd TT |
1890 | /* A helper function that knows how to read a 64-bit value in a way |
1891 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
1892 | otherwise. */ | |
2fdf6df6 | 1893 | |
9291a0cd TT |
1894 | static int |
1895 | extract_cu_value (const char *bytes, ULONGEST *result) | |
1896 | { | |
1897 | if (sizeof (ULONGEST) < 8) | |
1898 | { | |
1899 | int i; | |
1900 | ||
1901 | /* Ignore the upper 4 bytes if they are all zero. */ | |
1902 | for (i = 0; i < 4; ++i) | |
1903 | if (bytes[i + 4] != 0) | |
1904 | return 0; | |
1905 | ||
1906 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
1907 | } | |
1908 | else | |
1909 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
1910 | return 1; | |
1911 | } | |
1912 | ||
1913 | /* Read the CU list from the mapped index, and use it to create all | |
1914 | the CU objects for this objfile. Return 0 if something went wrong, | |
1915 | 1 if everything went ok. */ | |
2fdf6df6 | 1916 | |
9291a0cd | 1917 | static int |
1fd400ff TT |
1918 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
1919 | offset_type cu_list_elements) | |
9291a0cd TT |
1920 | { |
1921 | offset_type i; | |
9291a0cd TT |
1922 | |
1923 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
1924 | dwarf2_per_objfile->all_comp_units | |
1925 | = obstack_alloc (&objfile->objfile_obstack, | |
1926 | dwarf2_per_objfile->n_comp_units | |
1927 | * sizeof (struct dwarf2_per_cu_data *)); | |
1928 | ||
1929 | for (i = 0; i < cu_list_elements; i += 2) | |
1930 | { | |
1931 | struct dwarf2_per_cu_data *the_cu; | |
1932 | ULONGEST offset, length; | |
1933 | ||
1934 | if (!extract_cu_value (cu_list, &offset) | |
1935 | || !extract_cu_value (cu_list + 8, &length)) | |
1936 | return 0; | |
1937 | cu_list += 2 * 8; | |
1938 | ||
1939 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1940 | struct dwarf2_per_cu_data); | |
1941 | the_cu->offset = offset; | |
1942 | the_cu->length = length; | |
1943 | the_cu->objfile = objfile; | |
1944 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1945 | struct dwarf2_per_cu_quick_data); | |
1946 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
1947 | } | |
1948 | ||
1949 | return 1; | |
1950 | } | |
1951 | ||
1fd400ff | 1952 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 1953 | |
1fd400ff | 1954 | static int |
673bfd45 | 1955 | create_signatured_type_table_from_index (struct objfile *objfile, |
8b70b953 | 1956 | struct dwarf2_section_info *section, |
673bfd45 DE |
1957 | const gdb_byte *bytes, |
1958 | offset_type elements) | |
1fd400ff TT |
1959 | { |
1960 | offset_type i; | |
673bfd45 | 1961 | htab_t sig_types_hash; |
1fd400ff TT |
1962 | |
1963 | dwarf2_per_objfile->n_type_comp_units = elements / 3; | |
1964 | dwarf2_per_objfile->type_comp_units | |
1965 | = obstack_alloc (&objfile->objfile_obstack, | |
1966 | dwarf2_per_objfile->n_type_comp_units | |
1967 | * sizeof (struct dwarf2_per_cu_data *)); | |
1968 | ||
673bfd45 | 1969 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
1970 | |
1971 | for (i = 0; i < elements; i += 3) | |
1972 | { | |
1973 | struct signatured_type *type_sig; | |
1974 | ULONGEST offset, type_offset, signature; | |
1975 | void **slot; | |
1976 | ||
1977 | if (!extract_cu_value (bytes, &offset) | |
1978 | || !extract_cu_value (bytes + 8, &type_offset)) | |
1979 | return 0; | |
1980 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
1981 | bytes += 3 * 8; | |
1982 | ||
1983 | type_sig = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1984 | struct signatured_type); | |
1985 | type_sig->signature = signature; | |
1fd400ff | 1986 | type_sig->type_offset = type_offset; |
b0df02fd | 1987 | type_sig->per_cu.debug_types_section = section; |
1fd400ff TT |
1988 | type_sig->per_cu.offset = offset; |
1989 | type_sig->per_cu.objfile = objfile; | |
1990 | type_sig->per_cu.v.quick | |
1991 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1992 | struct dwarf2_per_cu_quick_data); | |
1993 | ||
673bfd45 | 1994 | slot = htab_find_slot (sig_types_hash, type_sig, INSERT); |
1fd400ff TT |
1995 | *slot = type_sig; |
1996 | ||
1997 | dwarf2_per_objfile->type_comp_units[i / 3] = &type_sig->per_cu; | |
1998 | } | |
1999 | ||
673bfd45 | 2000 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
2001 | |
2002 | return 1; | |
2003 | } | |
2004 | ||
9291a0cd TT |
2005 | /* Read the address map data from the mapped index, and use it to |
2006 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 2007 | |
9291a0cd TT |
2008 | static void |
2009 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
2010 | { | |
2011 | const gdb_byte *iter, *end; | |
2012 | struct obstack temp_obstack; | |
2013 | struct addrmap *mutable_map; | |
2014 | struct cleanup *cleanup; | |
2015 | CORE_ADDR baseaddr; | |
2016 | ||
2017 | obstack_init (&temp_obstack); | |
2018 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
2019 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
2020 | ||
2021 | iter = index->address_table; | |
2022 | end = iter + index->address_table_size; | |
2023 | ||
2024 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2025 | ||
2026 | while (iter < end) | |
2027 | { | |
2028 | ULONGEST hi, lo, cu_index; | |
2029 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2030 | iter += 8; | |
2031 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
2032 | iter += 8; | |
2033 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
2034 | iter += 4; | |
2035 | ||
2036 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 2037 | dw2_get_cu (cu_index)); |
9291a0cd TT |
2038 | } |
2039 | ||
2040 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
2041 | &objfile->objfile_obstack); | |
2042 | do_cleanups (cleanup); | |
2043 | } | |
2044 | ||
59d7bcaf JK |
2045 | /* The hash function for strings in the mapped index. This is the same as |
2046 | SYMBOL_HASH_NEXT, but we keep a separate copy to maintain control over the | |
2047 | implementation. This is necessary because the hash function is tied to the | |
2048 | format of the mapped index file. The hash values do not have to match with | |
559a7a62 JK |
2049 | SYMBOL_HASH_NEXT. |
2050 | ||
2051 | Use INT_MAX for INDEX_VERSION if you generate the current index format. */ | |
2fdf6df6 | 2052 | |
9291a0cd | 2053 | static hashval_t |
559a7a62 | 2054 | mapped_index_string_hash (int index_version, const void *p) |
9291a0cd TT |
2055 | { |
2056 | const unsigned char *str = (const unsigned char *) p; | |
2057 | hashval_t r = 0; | |
2058 | unsigned char c; | |
2059 | ||
2060 | while ((c = *str++) != 0) | |
559a7a62 JK |
2061 | { |
2062 | if (index_version >= 5) | |
2063 | c = tolower (c); | |
2064 | r = r * 67 + c - 113; | |
2065 | } | |
9291a0cd TT |
2066 | |
2067 | return r; | |
2068 | } | |
2069 | ||
2070 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
2071 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
2072 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 2073 | |
9291a0cd TT |
2074 | static int |
2075 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
2076 | offset_type **vec_out) | |
2077 | { | |
0cf03b49 JK |
2078 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2079 | offset_type hash; | |
9291a0cd | 2080 | offset_type slot, step; |
559a7a62 | 2081 | int (*cmp) (const char *, const char *); |
9291a0cd | 2082 | |
0cf03b49 JK |
2083 | if (current_language->la_language == language_cplus |
2084 | || current_language->la_language == language_java | |
2085 | || current_language->la_language == language_fortran) | |
2086 | { | |
2087 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
2088 | not contain any. */ | |
2089 | const char *paren = strchr (name, '('); | |
2090 | ||
2091 | if (paren) | |
2092 | { | |
2093 | char *dup; | |
2094 | ||
2095 | dup = xmalloc (paren - name + 1); | |
2096 | memcpy (dup, name, paren - name); | |
2097 | dup[paren - name] = 0; | |
2098 | ||
2099 | make_cleanup (xfree, dup); | |
2100 | name = dup; | |
2101 | } | |
2102 | } | |
2103 | ||
559a7a62 JK |
2104 | /* Index version 4 did not support case insensitive searches. But the |
2105 | indexes for case insensitive languages are built in lowercase, therefore | |
2106 | simulate our NAME being searched is also lowercased. */ | |
2107 | hash = mapped_index_string_hash ((index->version == 4 | |
2108 | && case_sensitivity == case_sensitive_off | |
2109 | ? 5 : index->version), | |
2110 | name); | |
2111 | ||
3876f04e DE |
2112 | slot = hash & (index->symbol_table_slots - 1); |
2113 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
559a7a62 | 2114 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
2115 | |
2116 | for (;;) | |
2117 | { | |
2118 | /* Convert a slot number to an offset into the table. */ | |
2119 | offset_type i = 2 * slot; | |
2120 | const char *str; | |
3876f04e | 2121 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
0cf03b49 JK |
2122 | { |
2123 | do_cleanups (back_to); | |
2124 | return 0; | |
2125 | } | |
9291a0cd | 2126 | |
3876f04e | 2127 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
559a7a62 | 2128 | if (!cmp (name, str)) |
9291a0cd TT |
2129 | { |
2130 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2131 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
0cf03b49 | 2132 | do_cleanups (back_to); |
9291a0cd TT |
2133 | return 1; |
2134 | } | |
2135 | ||
3876f04e | 2136 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2137 | } |
2138 | } | |
2139 | ||
2140 | /* Read the index file. If everything went ok, initialize the "quick" | |
2141 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2fdf6df6 | 2142 | |
9291a0cd TT |
2143 | static int |
2144 | dwarf2_read_index (struct objfile *objfile) | |
2145 | { | |
9291a0cd TT |
2146 | char *addr; |
2147 | struct mapped_index *map; | |
b3b272e1 | 2148 | offset_type *metadata; |
ac0b195c KW |
2149 | const gdb_byte *cu_list; |
2150 | const gdb_byte *types_list = NULL; | |
2151 | offset_type version, cu_list_elements; | |
2152 | offset_type types_list_elements = 0; | |
1fd400ff | 2153 | int i; |
9291a0cd | 2154 | |
9e0ac564 | 2155 | if (dwarf2_section_empty_p (&dwarf2_per_objfile->gdb_index)) |
9291a0cd | 2156 | return 0; |
82430852 JK |
2157 | |
2158 | /* Older elfutils strip versions could keep the section in the main | |
2159 | executable while splitting it for the separate debug info file. */ | |
2160 | if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection) | |
2161 | & SEC_HAS_CONTENTS) == 0) | |
2162 | return 0; | |
2163 | ||
9291a0cd TT |
2164 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); |
2165 | ||
2166 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
2167 | /* Version check. */ | |
1fd400ff | 2168 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2169 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 2170 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 2171 | contained incomplete addrmap. So, it seems better to just ignore such |
559a7a62 JK |
2172 | indices. Index version 4 uses a different hash function than index |
2173 | version 5 and later. */ | |
831adc1f | 2174 | if (version < 4) |
9291a0cd | 2175 | return 0; |
594e8718 JK |
2176 | /* Indexes with higher version than the one supported by GDB may be no |
2177 | longer backward compatible. */ | |
559a7a62 | 2178 | if (version > 5) |
594e8718 | 2179 | return 0; |
9291a0cd TT |
2180 | |
2181 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
559a7a62 | 2182 | map->version = version; |
b3b272e1 | 2183 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
2184 | |
2185 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2186 | |
2187 | i = 0; | |
2188 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
2189 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 2190 | / 8); |
1fd400ff TT |
2191 | ++i; |
2192 | ||
987d643c TT |
2193 | types_list = addr + MAYBE_SWAP (metadata[i]); |
2194 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2195 | - MAYBE_SWAP (metadata[i])) | |
2196 | / 8); | |
2197 | ++i; | |
1fd400ff TT |
2198 | |
2199 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2200 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2201 | - MAYBE_SWAP (metadata[i])); | |
2202 | ++i; | |
2203 | ||
3876f04e DE |
2204 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2205 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2206 | - MAYBE_SWAP (metadata[i])) | |
2207 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2208 | ++i; |
9291a0cd | 2209 | |
1fd400ff TT |
2210 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2211 | ||
2212 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) | |
2213 | return 0; | |
2214 | ||
8b70b953 TT |
2215 | if (types_list_elements) |
2216 | { | |
2217 | struct dwarf2_section_info *section; | |
2218 | ||
2219 | /* We can only handle a single .debug_types when we have an | |
2220 | index. */ | |
2221 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
2222 | return 0; | |
2223 | ||
2224 | section = VEC_index (dwarf2_section_info_def, | |
2225 | dwarf2_per_objfile->types, 0); | |
2226 | ||
2227 | if (!create_signatured_type_table_from_index (objfile, section, | |
2228 | types_list, | |
2229 | types_list_elements)) | |
2230 | return 0; | |
2231 | } | |
9291a0cd TT |
2232 | |
2233 | create_addrmap_from_index (objfile, map); | |
2234 | ||
2235 | dwarf2_per_objfile->index_table = map; | |
2236 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2237 | dwarf2_per_objfile->quick_file_names_table = |
2238 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2239 | |
2240 | return 1; | |
2241 | } | |
2242 | ||
2243 | /* A helper for the "quick" functions which sets the global | |
2244 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2245 | |
9291a0cd TT |
2246 | static void |
2247 | dw2_setup (struct objfile *objfile) | |
2248 | { | |
2249 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2250 | gdb_assert (dwarf2_per_objfile); | |
2251 | } | |
2252 | ||
2253 | /* A helper for the "quick" functions which attempts to read the line | |
2254 | table for THIS_CU. */ | |
2fdf6df6 | 2255 | |
7b9f3c50 DE |
2256 | static struct quick_file_names * |
2257 | dw2_get_file_names (struct objfile *objfile, | |
2258 | struct dwarf2_per_cu_data *this_cu) | |
9291a0cd TT |
2259 | { |
2260 | bfd *abfd = objfile->obfd; | |
7b9f3c50 | 2261 | struct line_header *lh; |
9291a0cd TT |
2262 | struct attribute *attr; |
2263 | struct cleanup *cleanups; | |
2264 | struct die_info *comp_unit_die; | |
36374493 | 2265 | struct dwarf2_section_info* sec; |
adabb602 | 2266 | gdb_byte *info_ptr, *buffer; |
9291a0cd TT |
2267 | int has_children, i; |
2268 | struct dwarf2_cu cu; | |
2269 | unsigned int bytes_read, buffer_size; | |
2270 | struct die_reader_specs reader_specs; | |
2271 | char *name, *comp_dir; | |
7b9f3c50 DE |
2272 | void **slot; |
2273 | struct quick_file_names *qfn; | |
2274 | unsigned int line_offset; | |
9291a0cd | 2275 | |
7b9f3c50 DE |
2276 | if (this_cu->v.quick->file_names != NULL) |
2277 | return this_cu->v.quick->file_names; | |
2278 | /* If we know there is no line data, no point in looking again. */ | |
2279 | if (this_cu->v.quick->no_file_data) | |
2280 | return NULL; | |
9291a0cd | 2281 | |
9816fde3 | 2282 | init_one_comp_unit (&cu, objfile); |
9291a0cd TT |
2283 | cleanups = make_cleanup (free_stack_comp_unit, &cu); |
2284 | ||
b0df02fd DE |
2285 | if (this_cu->debug_types_section) |
2286 | sec = this_cu->debug_types_section; | |
36374493 DE |
2287 | else |
2288 | sec = &dwarf2_per_objfile->info; | |
2289 | dwarf2_read_section (objfile, sec); | |
2290 | buffer_size = sec->size; | |
2291 | buffer = sec->buffer; | |
9291a0cd | 2292 | info_ptr = buffer + this_cu->offset; |
9291a0cd TT |
2293 | |
2294 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, | |
2295 | buffer, buffer_size, | |
460c1c54 | 2296 | abfd, |
b0df02fd | 2297 | this_cu->debug_types_section != NULL); |
9291a0cd | 2298 | |
6caca83c CC |
2299 | /* Skip dummy compilation units. */ |
2300 | if (info_ptr >= buffer + buffer_size | |
2301 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
2302 | { | |
2303 | do_cleanups (cleanups); | |
2304 | return NULL; | |
2305 | } | |
2306 | ||
9291a0cd TT |
2307 | this_cu->cu = &cu; |
2308 | cu.per_cu = this_cu; | |
2309 | ||
2310 | dwarf2_read_abbrevs (abfd, &cu); | |
2311 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
2312 | ||
9291a0cd | 2313 | init_cu_die_reader (&reader_specs, &cu); |
e8e80198 MS |
2314 | read_full_die (&reader_specs, &comp_unit_die, info_ptr, |
2315 | &has_children); | |
9291a0cd | 2316 | |
7b9f3c50 DE |
2317 | lh = NULL; |
2318 | slot = NULL; | |
2319 | line_offset = 0; | |
9291a0cd TT |
2320 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, &cu); |
2321 | if (attr) | |
2322 | { | |
7b9f3c50 DE |
2323 | struct quick_file_names find_entry; |
2324 | ||
2325 | line_offset = DW_UNSND (attr); | |
2326 | ||
2327 | /* We may have already read in this line header (TU line header sharing). | |
2328 | If we have we're done. */ | |
2329 | find_entry.offset = line_offset; | |
2330 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, | |
2331 | &find_entry, INSERT); | |
2332 | if (*slot != NULL) | |
2333 | { | |
2334 | do_cleanups (cleanups); | |
2335 | this_cu->v.quick->file_names = *slot; | |
2336 | return *slot; | |
2337 | } | |
2338 | ||
9291a0cd TT |
2339 | lh = dwarf_decode_line_header (line_offset, abfd, &cu); |
2340 | } | |
2341 | if (lh == NULL) | |
2342 | { | |
2343 | do_cleanups (cleanups); | |
7b9f3c50 DE |
2344 | this_cu->v.quick->no_file_data = 1; |
2345 | return NULL; | |
9291a0cd TT |
2346 | } |
2347 | ||
7b9f3c50 DE |
2348 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
2349 | qfn->offset = line_offset; | |
2350 | gdb_assert (slot != NULL); | |
2351 | *slot = qfn; | |
9291a0cd | 2352 | |
7b9f3c50 | 2353 | find_file_and_directory (comp_unit_die, &cu, &name, &comp_dir); |
9291a0cd | 2354 | |
7b9f3c50 DE |
2355 | qfn->num_file_names = lh->num_file_names; |
2356 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2357 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2358 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2359 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2360 | qfn->real_names = NULL; | |
9291a0cd | 2361 | |
7b9f3c50 | 2362 | free_line_header (lh); |
9291a0cd | 2363 | do_cleanups (cleanups); |
7b9f3c50 DE |
2364 | |
2365 | this_cu->v.quick->file_names = qfn; | |
2366 | return qfn; | |
9291a0cd TT |
2367 | } |
2368 | ||
2369 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2370 | real path for a given file name from the line table. */ |
2fdf6df6 | 2371 | |
9291a0cd | 2372 | static const char * |
7b9f3c50 DE |
2373 | dw2_get_real_path (struct objfile *objfile, |
2374 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2375 | { |
7b9f3c50 DE |
2376 | if (qfn->real_names == NULL) |
2377 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2378 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2379 | |
7b9f3c50 DE |
2380 | if (qfn->real_names[index] == NULL) |
2381 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2382 | |
7b9f3c50 | 2383 | return qfn->real_names[index]; |
9291a0cd TT |
2384 | } |
2385 | ||
2386 | static struct symtab * | |
2387 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2388 | { | |
2389 | int index; | |
ae2de4f8 | 2390 | |
9291a0cd TT |
2391 | dw2_setup (objfile); |
2392 | index = dwarf2_per_objfile->n_comp_units - 1; | |
a0f42c21 | 2393 | return dw2_instantiate_symtab (dw2_get_cu (index)); |
9291a0cd TT |
2394 | } |
2395 | ||
7b9f3c50 DE |
2396 | /* Traversal function for dw2_forget_cached_source_info. */ |
2397 | ||
2398 | static int | |
2399 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 2400 | { |
7b9f3c50 | 2401 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 2402 | |
7b9f3c50 | 2403 | if (file_data->real_names) |
9291a0cd | 2404 | { |
7b9f3c50 | 2405 | int i; |
9291a0cd | 2406 | |
7b9f3c50 | 2407 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 2408 | { |
7b9f3c50 DE |
2409 | xfree ((void*) file_data->real_names[i]); |
2410 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
2411 | } |
2412 | } | |
7b9f3c50 DE |
2413 | |
2414 | return 1; | |
2415 | } | |
2416 | ||
2417 | static void | |
2418 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2419 | { | |
2420 | dw2_setup (objfile); | |
2421 | ||
2422 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
2423 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
2424 | } |
2425 | ||
f8eba3c6 TT |
2426 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
2427 | the symtabs and calls the iterator. */ | |
2428 | ||
2429 | static int | |
2430 | dw2_map_expand_apply (struct objfile *objfile, | |
2431 | struct dwarf2_per_cu_data *per_cu, | |
2432 | const char *name, | |
2433 | const char *full_path, const char *real_path, | |
2434 | int (*callback) (struct symtab *, void *), | |
2435 | void *data) | |
2436 | { | |
2437 | struct symtab *last_made = objfile->symtabs; | |
2438 | ||
2439 | /* Don't visit already-expanded CUs. */ | |
2440 | if (per_cu->v.quick->symtab) | |
2441 | return 0; | |
2442 | ||
2443 | /* This may expand more than one symtab, and we want to iterate over | |
2444 | all of them. */ | |
a0f42c21 | 2445 | dw2_instantiate_symtab (per_cu); |
f8eba3c6 TT |
2446 | |
2447 | return iterate_over_some_symtabs (name, full_path, real_path, callback, data, | |
2448 | objfile->symtabs, last_made); | |
2449 | } | |
2450 | ||
2451 | /* Implementation of the map_symtabs_matching_filename method. */ | |
2452 | ||
9291a0cd | 2453 | static int |
f8eba3c6 TT |
2454 | dw2_map_symtabs_matching_filename (struct objfile *objfile, const char *name, |
2455 | const char *full_path, const char *real_path, | |
2456 | int (*callback) (struct symtab *, void *), | |
2457 | void *data) | |
9291a0cd TT |
2458 | { |
2459 | int i; | |
c011a4f4 DE |
2460 | const char *name_basename = lbasename (name); |
2461 | int check_basename = name_basename == name; | |
9291a0cd TT |
2462 | struct dwarf2_per_cu_data *base_cu = NULL; |
2463 | ||
2464 | dw2_setup (objfile); | |
ae2de4f8 | 2465 | |
1fd400ff TT |
2466 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2467 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2468 | { |
2469 | int j; | |
e254ef6a | 2470 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2471 | struct quick_file_names *file_data; |
9291a0cd | 2472 | |
3d7bb9d9 | 2473 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2474 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2475 | continue; |
2476 | ||
7b9f3c50 DE |
2477 | file_data = dw2_get_file_names (objfile, per_cu); |
2478 | if (file_data == NULL) | |
9291a0cd TT |
2479 | continue; |
2480 | ||
7b9f3c50 | 2481 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2482 | { |
7b9f3c50 | 2483 | const char *this_name = file_data->file_names[j]; |
9291a0cd TT |
2484 | |
2485 | if (FILENAME_CMP (name, this_name) == 0) | |
2486 | { | |
f8eba3c6 TT |
2487 | if (dw2_map_expand_apply (objfile, per_cu, |
2488 | name, full_path, real_path, | |
2489 | callback, data)) | |
2490 | return 1; | |
9291a0cd TT |
2491 | } |
2492 | ||
2493 | if (check_basename && ! base_cu | |
2494 | && FILENAME_CMP (lbasename (this_name), name) == 0) | |
e254ef6a | 2495 | base_cu = per_cu; |
9291a0cd | 2496 | |
c011a4f4 DE |
2497 | /* Before we invoke realpath, which can get expensive when many |
2498 | files are involved, do a quick comparison of the basenames. */ | |
2499 | if (! basenames_may_differ | |
2500 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
2501 | continue; | |
2502 | ||
9291a0cd TT |
2503 | if (full_path != NULL) |
2504 | { | |
7b9f3c50 DE |
2505 | const char *this_real_name = dw2_get_real_path (objfile, |
2506 | file_data, j); | |
9291a0cd | 2507 | |
7b9f3c50 DE |
2508 | if (this_real_name != NULL |
2509 | && FILENAME_CMP (full_path, this_real_name) == 0) | |
9291a0cd | 2510 | { |
f8eba3c6 TT |
2511 | if (dw2_map_expand_apply (objfile, per_cu, |
2512 | name, full_path, real_path, | |
2513 | callback, data)) | |
2514 | return 1; | |
9291a0cd TT |
2515 | } |
2516 | } | |
2517 | ||
2518 | if (real_path != NULL) | |
2519 | { | |
7b9f3c50 DE |
2520 | const char *this_real_name = dw2_get_real_path (objfile, |
2521 | file_data, j); | |
9291a0cd | 2522 | |
7b9f3c50 DE |
2523 | if (this_real_name != NULL |
2524 | && FILENAME_CMP (real_path, this_real_name) == 0) | |
9291a0cd | 2525 | { |
f8eba3c6 TT |
2526 | if (dw2_map_expand_apply (objfile, per_cu, |
2527 | name, full_path, real_path, | |
2528 | callback, data)) | |
2529 | return 1; | |
9291a0cd TT |
2530 | } |
2531 | } | |
2532 | } | |
2533 | } | |
2534 | ||
2535 | if (base_cu) | |
2536 | { | |
f8eba3c6 TT |
2537 | if (dw2_map_expand_apply (objfile, base_cu, |
2538 | name, full_path, real_path, | |
2539 | callback, data)) | |
2540 | return 1; | |
9291a0cd TT |
2541 | } |
2542 | ||
2543 | return 0; | |
2544 | } | |
2545 | ||
2546 | static struct symtab * | |
2547 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2548 | const char *name, domain_enum domain) | |
2549 | { | |
774b6a14 | 2550 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
2551 | instead. */ |
2552 | return NULL; | |
2553 | } | |
2554 | ||
2555 | /* A helper function that expands all symtabs that hold an object | |
2556 | named NAME. */ | |
2fdf6df6 | 2557 | |
9291a0cd TT |
2558 | static void |
2559 | dw2_do_expand_symtabs_matching (struct objfile *objfile, const char *name) | |
2560 | { | |
2561 | dw2_setup (objfile); | |
2562 | ||
ae2de4f8 | 2563 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd TT |
2564 | if (dwarf2_per_objfile->index_table) |
2565 | { | |
2566 | offset_type *vec; | |
2567 | ||
2568 | if (find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2569 | name, &vec)) | |
2570 | { | |
2571 | offset_type i, len = MAYBE_SWAP (*vec); | |
2572 | for (i = 0; i < len; ++i) | |
2573 | { | |
2574 | offset_type cu_index = MAYBE_SWAP (vec[i + 1]); | |
e254ef6a | 2575 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
1fd400ff | 2576 | |
a0f42c21 | 2577 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2578 | } |
2579 | } | |
2580 | } | |
2581 | } | |
2582 | ||
774b6a14 TT |
2583 | static void |
2584 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
8903c50d | 2585 | enum block_enum block_kind, const char *name, |
774b6a14 | 2586 | domain_enum domain) |
9291a0cd | 2587 | { |
774b6a14 | 2588 | dw2_do_expand_symtabs_matching (objfile, name); |
9291a0cd TT |
2589 | } |
2590 | ||
2591 | static void | |
2592 | dw2_print_stats (struct objfile *objfile) | |
2593 | { | |
2594 | int i, count; | |
2595 | ||
2596 | dw2_setup (objfile); | |
2597 | count = 0; | |
1fd400ff TT |
2598 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2599 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2600 | { |
e254ef6a | 2601 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2602 | |
e254ef6a | 2603 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
2604 | ++count; |
2605 | } | |
2606 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2607 | } | |
2608 | ||
2609 | static void | |
2610 | dw2_dump (struct objfile *objfile) | |
2611 | { | |
2612 | /* Nothing worth printing. */ | |
2613 | } | |
2614 | ||
2615 | static void | |
2616 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2617 | struct section_offsets *delta) | |
2618 | { | |
2619 | /* There's nothing to relocate here. */ | |
2620 | } | |
2621 | ||
2622 | static void | |
2623 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2624 | const char *func_name) | |
2625 | { | |
2626 | dw2_do_expand_symtabs_matching (objfile, func_name); | |
2627 | } | |
2628 | ||
2629 | static void | |
2630 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2631 | { | |
2632 | int i; | |
2633 | ||
2634 | dw2_setup (objfile); | |
1fd400ff TT |
2635 | |
2636 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2637 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2638 | { |
e254ef6a | 2639 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2640 | |
a0f42c21 | 2641 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2642 | } |
2643 | } | |
2644 | ||
2645 | static void | |
2646 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2647 | const char *filename) | |
2648 | { | |
2649 | int i; | |
2650 | ||
2651 | dw2_setup (objfile); | |
d4637a04 DE |
2652 | |
2653 | /* We don't need to consider type units here. | |
2654 | This is only called for examining code, e.g. expand_line_sal. | |
2655 | There can be an order of magnitude (or more) more type units | |
2656 | than comp units, and we avoid them if we can. */ | |
2657 | ||
2658 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
2659 | { |
2660 | int j; | |
e254ef6a | 2661 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2662 | struct quick_file_names *file_data; |
9291a0cd | 2663 | |
3d7bb9d9 | 2664 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2665 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2666 | continue; |
2667 | ||
7b9f3c50 DE |
2668 | file_data = dw2_get_file_names (objfile, per_cu); |
2669 | if (file_data == NULL) | |
9291a0cd TT |
2670 | continue; |
2671 | ||
7b9f3c50 | 2672 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2673 | { |
7b9f3c50 | 2674 | const char *this_name = file_data->file_names[j]; |
1ef75ecc | 2675 | if (FILENAME_CMP (this_name, filename) == 0) |
9291a0cd | 2676 | { |
a0f42c21 | 2677 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2678 | break; |
2679 | } | |
2680 | } | |
2681 | } | |
2682 | } | |
2683 | ||
dd786858 | 2684 | static const char * |
9291a0cd TT |
2685 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2686 | { | |
e254ef6a | 2687 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 2688 | offset_type *vec; |
7b9f3c50 | 2689 | struct quick_file_names *file_data; |
9291a0cd TT |
2690 | |
2691 | dw2_setup (objfile); | |
2692 | ||
ae2de4f8 | 2693 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd | 2694 | if (!dwarf2_per_objfile->index_table) |
96408a79 SA |
2695 | { |
2696 | struct symtab *s; | |
2697 | ||
2698 | ALL_OBJFILE_SYMTABS (objfile, s) | |
2699 | if (s->primary) | |
2700 | { | |
2701 | struct blockvector *bv = BLOCKVECTOR (s); | |
2702 | const struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK); | |
2703 | struct symbol *sym = lookup_block_symbol (block, name, VAR_DOMAIN); | |
2704 | ||
2705 | if (sym) | |
2706 | return sym->symtab->filename; | |
2707 | } | |
2708 | return NULL; | |
2709 | } | |
9291a0cd TT |
2710 | |
2711 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2712 | name, &vec)) | |
2713 | return NULL; | |
2714 | ||
2715 | /* Note that this just looks at the very first one named NAME -- but | |
2716 | actually we are looking for a function. find_main_filename | |
2717 | should be rewritten so that it doesn't require a custom hook. It | |
2718 | could just use the ordinary symbol tables. */ | |
2719 | /* vec[0] is the length, which must always be >0. */ | |
e254ef6a | 2720 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[1])); |
9291a0cd | 2721 | |
7b9f3c50 DE |
2722 | file_data = dw2_get_file_names (objfile, per_cu); |
2723 | if (file_data == NULL) | |
9291a0cd TT |
2724 | return NULL; |
2725 | ||
7b9f3c50 | 2726 | return file_data->file_names[file_data->num_file_names - 1]; |
9291a0cd TT |
2727 | } |
2728 | ||
2729 | static void | |
40658b94 PH |
2730 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
2731 | struct objfile *objfile, int global, | |
2732 | int (*callback) (struct block *, | |
2733 | struct symbol *, void *), | |
2edb89d3 JK |
2734 | void *data, symbol_compare_ftype *match, |
2735 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 2736 | { |
40658b94 | 2737 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
2738 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
2739 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
2740 | } |
2741 | ||
2742 | static void | |
f8eba3c6 TT |
2743 | dw2_expand_symtabs_matching |
2744 | (struct objfile *objfile, | |
2745 | int (*file_matcher) (const char *, void *), | |
2746 | int (*name_matcher) (const struct language_defn *, const char *, void *), | |
2747 | enum search_domain kind, | |
2748 | void *data) | |
9291a0cd TT |
2749 | { |
2750 | int i; | |
2751 | offset_type iter; | |
4b5246aa | 2752 | struct mapped_index *index; |
9291a0cd TT |
2753 | |
2754 | dw2_setup (objfile); | |
ae2de4f8 DE |
2755 | |
2756 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
2757 | if (!dwarf2_per_objfile->index_table) |
2758 | return; | |
4b5246aa | 2759 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2760 | |
7b08b9eb JK |
2761 | if (file_matcher != NULL) |
2762 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2763 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
2764 | { | |
2765 | int j; | |
2766 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); | |
2767 | struct quick_file_names *file_data; | |
2768 | ||
2769 | per_cu->v.quick->mark = 0; | |
3d7bb9d9 DE |
2770 | |
2771 | /* We only need to look at symtabs not already expanded. */ | |
7b08b9eb JK |
2772 | if (per_cu->v.quick->symtab) |
2773 | continue; | |
2774 | ||
2775 | file_data = dw2_get_file_names (objfile, per_cu); | |
2776 | if (file_data == NULL) | |
2777 | continue; | |
2778 | ||
2779 | for (j = 0; j < file_data->num_file_names; ++j) | |
2780 | { | |
2781 | if (file_matcher (file_data->file_names[j], data)) | |
2782 | { | |
2783 | per_cu->v.quick->mark = 1; | |
2784 | break; | |
2785 | } | |
2786 | } | |
2787 | } | |
9291a0cd | 2788 | |
3876f04e | 2789 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
2790 | { |
2791 | offset_type idx = 2 * iter; | |
2792 | const char *name; | |
2793 | offset_type *vec, vec_len, vec_idx; | |
2794 | ||
3876f04e | 2795 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
2796 | continue; |
2797 | ||
3876f04e | 2798 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd | 2799 | |
f8eba3c6 | 2800 | if (! (*name_matcher) (current_language, name, data)) |
9291a0cd TT |
2801 | continue; |
2802 | ||
2803 | /* The name was matched, now expand corresponding CUs that were | |
2804 | marked. */ | |
4b5246aa | 2805 | vec = (offset_type *) (index->constant_pool |
3876f04e | 2806 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
2807 | vec_len = MAYBE_SWAP (vec[0]); |
2808 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
2809 | { | |
e254ef6a | 2810 | struct dwarf2_per_cu_data *per_cu; |
1fd400ff | 2811 | |
e254ef6a | 2812 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[vec_idx + 1])); |
7b08b9eb | 2813 | if (file_matcher == NULL || per_cu->v.quick->mark) |
a0f42c21 | 2814 | dw2_instantiate_symtab (per_cu); |
9291a0cd TT |
2815 | } |
2816 | } | |
2817 | } | |
2818 | ||
2819 | static struct symtab * | |
2820 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
2821 | struct minimal_symbol *msymbol, | |
2822 | CORE_ADDR pc, | |
2823 | struct obj_section *section, | |
2824 | int warn_if_readin) | |
2825 | { | |
2826 | struct dwarf2_per_cu_data *data; | |
2827 | ||
2828 | dw2_setup (objfile); | |
2829 | ||
2830 | if (!objfile->psymtabs_addrmap) | |
2831 | return NULL; | |
2832 | ||
2833 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
2834 | if (!data) | |
2835 | return NULL; | |
2836 | ||
2837 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 2838 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
2839 | paddress (get_objfile_arch (objfile), pc)); |
2840 | ||
a0f42c21 | 2841 | return dw2_instantiate_symtab (data); |
9291a0cd TT |
2842 | } |
2843 | ||
9291a0cd | 2844 | static void |
44b13c5a | 2845 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, |
74e2f255 | 2846 | void *data, int need_fullname) |
9291a0cd TT |
2847 | { |
2848 | int i; | |
2849 | ||
2850 | dw2_setup (objfile); | |
ae2de4f8 | 2851 | |
1fd400ff TT |
2852 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2853 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2854 | { |
2855 | int j; | |
e254ef6a | 2856 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2857 | struct quick_file_names *file_data; |
9291a0cd | 2858 | |
3d7bb9d9 | 2859 | /* We only need to look at symtabs not already expanded. */ |
e254ef6a | 2860 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2861 | continue; |
2862 | ||
7b9f3c50 DE |
2863 | file_data = dw2_get_file_names (objfile, per_cu); |
2864 | if (file_data == NULL) | |
9291a0cd TT |
2865 | continue; |
2866 | ||
7b9f3c50 | 2867 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2868 | { |
74e2f255 DE |
2869 | const char *this_real_name; |
2870 | ||
2871 | if (need_fullname) | |
2872 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
2873 | else | |
2874 | this_real_name = NULL; | |
7b9f3c50 | 2875 | (*fun) (file_data->file_names[j], this_real_name, data); |
9291a0cd TT |
2876 | } |
2877 | } | |
2878 | } | |
2879 | ||
2880 | static int | |
2881 | dw2_has_symbols (struct objfile *objfile) | |
2882 | { | |
2883 | return 1; | |
2884 | } | |
2885 | ||
2886 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
2887 | { | |
2888 | dw2_has_symbols, | |
2889 | dw2_find_last_source_symtab, | |
2890 | dw2_forget_cached_source_info, | |
f8eba3c6 | 2891 | dw2_map_symtabs_matching_filename, |
9291a0cd | 2892 | dw2_lookup_symbol, |
774b6a14 | 2893 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
2894 | dw2_print_stats, |
2895 | dw2_dump, | |
2896 | dw2_relocate, | |
2897 | dw2_expand_symtabs_for_function, | |
2898 | dw2_expand_all_symtabs, | |
2899 | dw2_expand_symtabs_with_filename, | |
2900 | dw2_find_symbol_file, | |
40658b94 | 2901 | dw2_map_matching_symbols, |
9291a0cd TT |
2902 | dw2_expand_symtabs_matching, |
2903 | dw2_find_pc_sect_symtab, | |
9291a0cd TT |
2904 | dw2_map_symbol_filenames |
2905 | }; | |
2906 | ||
2907 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
2908 | file will use psymtabs, or 1 if using the GNU index. */ | |
2909 | ||
2910 | int | |
2911 | dwarf2_initialize_objfile (struct objfile *objfile) | |
2912 | { | |
2913 | /* If we're about to read full symbols, don't bother with the | |
2914 | indices. In this case we also don't care if some other debug | |
2915 | format is making psymtabs, because they are all about to be | |
2916 | expanded anyway. */ | |
2917 | if ((objfile->flags & OBJF_READNOW)) | |
2918 | { | |
2919 | int i; | |
2920 | ||
2921 | dwarf2_per_objfile->using_index = 1; | |
2922 | create_all_comp_units (objfile); | |
1fd400ff | 2923 | create_debug_types_hash_table (objfile); |
7b9f3c50 DE |
2924 | dwarf2_per_objfile->quick_file_names_table = |
2925 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 2926 | |
1fd400ff TT |
2927 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2928 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2929 | { |
e254ef6a | 2930 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2931 | |
e254ef6a DE |
2932 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2933 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
2934 | } |
2935 | ||
2936 | /* Return 1 so that gdb sees the "quick" functions. However, | |
2937 | these functions will be no-ops because we will have expanded | |
2938 | all symtabs. */ | |
2939 | return 1; | |
2940 | } | |
2941 | ||
2942 | if (dwarf2_read_index (objfile)) | |
2943 | return 1; | |
2944 | ||
9291a0cd TT |
2945 | return 0; |
2946 | } | |
2947 | ||
2948 | \f | |
2949 | ||
dce234bc PP |
2950 | /* Build a partial symbol table. */ |
2951 | ||
2952 | void | |
f29dff0a | 2953 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 2954 | { |
f29dff0a | 2955 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
2956 | { |
2957 | init_psymbol_list (objfile, 1024); | |
2958 | } | |
2959 | ||
d146bf1e | 2960 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 2961 | } |
c906108c | 2962 | |
45452591 DE |
2963 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
2964 | ||
2965 | static inline int | |
2966 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
2967 | { | |
2968 | unsigned int bottom = cu_header->offset; | |
2969 | unsigned int top = (cu_header->offset | |
2970 | + cu_header->length | |
2971 | + cu_header->initial_length_size); | |
9a619af0 | 2972 | |
45452591 DE |
2973 | return (offset >= bottom && offset < top); |
2974 | } | |
2975 | ||
93311388 DE |
2976 | /* Read in the comp unit header information from the debug_info at info_ptr. |
2977 | NOTE: This leaves members offset, first_die_offset to be filled in | |
2978 | by the caller. */ | |
107d2387 | 2979 | |
fe1b8b76 | 2980 | static gdb_byte * |
107d2387 | 2981 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 2982 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
2983 | { |
2984 | int signed_addr; | |
891d2f0b | 2985 | unsigned int bytes_read; |
c764a876 DE |
2986 | |
2987 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
2988 | cu_header->initial_length_size = bytes_read; | |
2989 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 2990 | info_ptr += bytes_read; |
107d2387 AC |
2991 | cu_header->version = read_2_bytes (abfd, info_ptr); |
2992 | info_ptr += 2; | |
613e1657 | 2993 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
c764a876 | 2994 | &bytes_read); |
613e1657 | 2995 | info_ptr += bytes_read; |
107d2387 AC |
2996 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
2997 | info_ptr += 1; | |
2998 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
2999 | if (signed_addr < 0) | |
8e65ff28 | 3000 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3001 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 3002 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 3003 | |
107d2387 AC |
3004 | return info_ptr; |
3005 | } | |
3006 | ||
adabb602 DE |
3007 | /* Read in a CU header and perform some basic error checking. */ |
3008 | ||
fe1b8b76 JB |
3009 | static gdb_byte * |
3010 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
93311388 | 3011 | gdb_byte *buffer, unsigned int buffer_size, |
b0df02fd | 3012 | bfd *abfd, int is_debug_types_section) |
72bf9492 | 3013 | { |
fe1b8b76 | 3014 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 3015 | |
adabb602 DE |
3016 | header->offset = beg_of_comp_unit - buffer; |
3017 | ||
72bf9492 DJ |
3018 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); |
3019 | ||
460c1c54 CC |
3020 | /* If we're reading a type unit, skip over the signature and |
3021 | type_offset fields. */ | |
b0df02fd | 3022 | if (is_debug_types_section) |
460c1c54 CC |
3023 | info_ptr += 8 /*signature*/ + header->offset_size; |
3024 | ||
adabb602 DE |
3025 | header->first_die_offset = info_ptr - beg_of_comp_unit; |
3026 | ||
2dc7f7b3 | 3027 | if (header->version != 2 && header->version != 3 && header->version != 4) |
8a3fe4f8 | 3028 | error (_("Dwarf Error: wrong version in compilation unit header " |
2dc7f7b3 TT |
3029 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, |
3030 | bfd_get_filename (abfd)); | |
72bf9492 | 3031 | |
9e0ac564 TT |
3032 | if (header->abbrev_offset |
3033 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, | |
3034 | &dwarf2_per_objfile->abbrev)) | |
8a3fe4f8 AC |
3035 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
3036 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 | 3037 | (long) header->abbrev_offset, |
93311388 | 3038 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
3039 | bfd_get_filename (abfd)); |
3040 | ||
3041 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
93311388 | 3042 | > buffer + buffer_size) |
8a3fe4f8 AC |
3043 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
3044 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 | 3045 | (long) header->length, |
93311388 | 3046 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
3047 | bfd_get_filename (abfd)); |
3048 | ||
3049 | return info_ptr; | |
3050 | } | |
3051 | ||
348e048f DE |
3052 | /* Read in the types comp unit header information from .debug_types entry at |
3053 | types_ptr. The result is a pointer to one past the end of the header. */ | |
3054 | ||
3055 | static gdb_byte * | |
3056 | read_type_comp_unit_head (struct comp_unit_head *cu_header, | |
8b70b953 | 3057 | struct dwarf2_section_info *section, |
348e048f DE |
3058 | ULONGEST *signature, |
3059 | gdb_byte *types_ptr, bfd *abfd) | |
3060 | { | |
348e048f DE |
3061 | gdb_byte *initial_types_ptr = types_ptr; |
3062 | ||
8b70b953 TT |
3063 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
3064 | cu_header->offset = types_ptr - section->buffer; | |
348e048f DE |
3065 | |
3066 | types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd); | |
3067 | ||
3068 | *signature = read_8_bytes (abfd, types_ptr); | |
3069 | types_ptr += 8; | |
3070 | types_ptr += cu_header->offset_size; | |
3071 | cu_header->first_die_offset = types_ptr - initial_types_ptr; | |
3072 | ||
3073 | return types_ptr; | |
3074 | } | |
3075 | ||
aaa75496 JB |
3076 | /* Allocate a new partial symtab for file named NAME and mark this new |
3077 | partial symtab as being an include of PST. */ | |
3078 | ||
3079 | static void | |
3080 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
3081 | struct objfile *objfile) | |
3082 | { | |
3083 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
3084 | ||
3085 | subpst->section_offsets = pst->section_offsets; | |
3086 | subpst->textlow = 0; | |
3087 | subpst->texthigh = 0; | |
3088 | ||
3089 | subpst->dependencies = (struct partial_symtab **) | |
3090 | obstack_alloc (&objfile->objfile_obstack, | |
3091 | sizeof (struct partial_symtab *)); | |
3092 | subpst->dependencies[0] = pst; | |
3093 | subpst->number_of_dependencies = 1; | |
3094 | ||
3095 | subpst->globals_offset = 0; | |
3096 | subpst->n_global_syms = 0; | |
3097 | subpst->statics_offset = 0; | |
3098 | subpst->n_static_syms = 0; | |
3099 | subpst->symtab = NULL; | |
3100 | subpst->read_symtab = pst->read_symtab; | |
3101 | subpst->readin = 0; | |
3102 | ||
3103 | /* No private part is necessary for include psymtabs. This property | |
3104 | can be used to differentiate between such include psymtabs and | |
10b3939b | 3105 | the regular ones. */ |
58a9656e | 3106 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
3107 | } |
3108 | ||
3109 | /* Read the Line Number Program data and extract the list of files | |
3110 | included by the source file represented by PST. Build an include | |
d85a05f0 | 3111 | partial symtab for each of these included files. */ |
aaa75496 JB |
3112 | |
3113 | static void | |
3114 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
d85a05f0 | 3115 | struct die_info *die, |
aaa75496 JB |
3116 | struct partial_symtab *pst) |
3117 | { | |
3118 | struct objfile *objfile = cu->objfile; | |
3119 | bfd *abfd = objfile->obfd; | |
d85a05f0 DJ |
3120 | struct line_header *lh = NULL; |
3121 | struct attribute *attr; | |
aaa75496 | 3122 | |
d85a05f0 DJ |
3123 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
3124 | if (attr) | |
3125 | { | |
3126 | unsigned int line_offset = DW_UNSND (attr); | |
9a619af0 | 3127 | |
d85a05f0 DJ |
3128 | lh = dwarf_decode_line_header (line_offset, abfd, cu); |
3129 | } | |
aaa75496 JB |
3130 | if (lh == NULL) |
3131 | return; /* No linetable, so no includes. */ | |
3132 | ||
c6da4cef DE |
3133 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
3134 | dwarf_decode_lines (lh, pst->dirname, abfd, cu, pst); | |
aaa75496 JB |
3135 | |
3136 | free_line_header (lh); | |
3137 | } | |
3138 | ||
348e048f DE |
3139 | static hashval_t |
3140 | hash_type_signature (const void *item) | |
3141 | { | |
3142 | const struct signatured_type *type_sig = item; | |
9a619af0 | 3143 | |
348e048f DE |
3144 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
3145 | return type_sig->signature; | |
3146 | } | |
3147 | ||
3148 | static int | |
3149 | eq_type_signature (const void *item_lhs, const void *item_rhs) | |
3150 | { | |
3151 | const struct signatured_type *lhs = item_lhs; | |
3152 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 3153 | |
348e048f DE |
3154 | return lhs->signature == rhs->signature; |
3155 | } | |
3156 | ||
1fd400ff TT |
3157 | /* Allocate a hash table for signatured types. */ |
3158 | ||
3159 | static htab_t | |
673bfd45 | 3160 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
3161 | { |
3162 | return htab_create_alloc_ex (41, | |
3163 | hash_type_signature, | |
3164 | eq_type_signature, | |
3165 | NULL, | |
3166 | &objfile->objfile_obstack, | |
3167 | hashtab_obstack_allocate, | |
3168 | dummy_obstack_deallocate); | |
3169 | } | |
3170 | ||
3171 | /* A helper function to add a signatured type CU to a list. */ | |
3172 | ||
3173 | static int | |
3174 | add_signatured_type_cu_to_list (void **slot, void *datum) | |
3175 | { | |
3176 | struct signatured_type *sigt = *slot; | |
3177 | struct dwarf2_per_cu_data ***datap = datum; | |
3178 | ||
3179 | **datap = &sigt->per_cu; | |
3180 | ++*datap; | |
3181 | ||
3182 | return 1; | |
3183 | } | |
3184 | ||
348e048f DE |
3185 | /* Create the hash table of all entries in the .debug_types section. |
3186 | The result is zero if there is an error (e.g. missing .debug_types section), | |
3187 | otherwise non-zero. */ | |
3188 | ||
3189 | static int | |
3190 | create_debug_types_hash_table (struct objfile *objfile) | |
3191 | { | |
8b70b953 | 3192 | htab_t types_htab = NULL; |
1fd400ff | 3193 | struct dwarf2_per_cu_data **iter; |
8b70b953 TT |
3194 | int ix; |
3195 | struct dwarf2_section_info *section; | |
348e048f | 3196 | |
8b70b953 | 3197 | if (VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types)) |
348e048f DE |
3198 | { |
3199 | dwarf2_per_objfile->signatured_types = NULL; | |
3200 | return 0; | |
3201 | } | |
3202 | ||
8b70b953 TT |
3203 | for (ix = 0; |
3204 | VEC_iterate (dwarf2_section_info_def, dwarf2_per_objfile->types, | |
3205 | ix, section); | |
3206 | ++ix) | |
3207 | { | |
3208 | gdb_byte *info_ptr, *end_ptr; | |
348e048f | 3209 | |
8b70b953 TT |
3210 | dwarf2_read_section (objfile, section); |
3211 | info_ptr = section->buffer; | |
348e048f | 3212 | |
8b70b953 TT |
3213 | if (info_ptr == NULL) |
3214 | continue; | |
348e048f | 3215 | |
8b70b953 TT |
3216 | if (types_htab == NULL) |
3217 | types_htab = allocate_signatured_type_table (objfile); | |
348e048f | 3218 | |
8b70b953 TT |
3219 | if (dwarf2_die_debug) |
3220 | fprintf_unfiltered (gdb_stdlog, "Signatured types:\n"); | |
3221 | ||
3222 | end_ptr = info_ptr + section->size; | |
3223 | while (info_ptr < end_ptr) | |
3224 | { | |
3225 | unsigned int offset; | |
3226 | unsigned int offset_size; | |
3227 | unsigned int type_offset; | |
3228 | unsigned int length, initial_length_size; | |
3229 | unsigned short version; | |
3230 | ULONGEST signature; | |
3231 | struct signatured_type *type_sig; | |
3232 | void **slot; | |
3233 | gdb_byte *ptr = info_ptr; | |
348e048f | 3234 | |
8b70b953 | 3235 | offset = ptr - section->buffer; |
348e048f | 3236 | |
8b70b953 TT |
3237 | /* We need to read the type's signature in order to build the hash |
3238 | table, but we don't need to read anything else just yet. */ | |
348e048f | 3239 | |
8b70b953 TT |
3240 | /* Sanity check to ensure entire cu is present. */ |
3241 | length = read_initial_length (objfile->obfd, ptr, | |
3242 | &initial_length_size); | |
3243 | if (ptr + length + initial_length_size > end_ptr) | |
3244 | { | |
3245 | complaint (&symfile_complaints, | |
3246 | _("debug type entry runs off end " | |
3247 | "of `.debug_types' section, ignored")); | |
3248 | break; | |
3249 | } | |
348e048f | 3250 | |
8b70b953 TT |
3251 | offset_size = initial_length_size == 4 ? 4 : 8; |
3252 | ptr += initial_length_size; | |
3253 | version = bfd_get_16 (objfile->obfd, ptr); | |
3254 | ptr += 2; | |
3255 | ptr += offset_size; /* abbrev offset */ | |
3256 | ptr += 1; /* address size */ | |
3257 | signature = bfd_get_64 (objfile->obfd, ptr); | |
3258 | ptr += 8; | |
3259 | type_offset = read_offset_1 (objfile->obfd, ptr, offset_size); | |
4743b735 | 3260 | ptr += offset_size; |
6caca83c CC |
3261 | |
3262 | /* Skip dummy type units. */ | |
3263 | if (ptr >= end_ptr || peek_abbrev_code (objfile->obfd, ptr) == 0) | |
3264 | { | |
3265 | info_ptr = info_ptr + initial_length_size + length; | |
3266 | continue; | |
3267 | } | |
8b70b953 TT |
3268 | |
3269 | type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig)); | |
3270 | memset (type_sig, 0, sizeof (*type_sig)); | |
3271 | type_sig->signature = signature; | |
3272 | type_sig->type_offset = type_offset; | |
3273 | type_sig->per_cu.objfile = objfile; | |
b0df02fd | 3274 | type_sig->per_cu.debug_types_section = section; |
8b70b953 TT |
3275 | type_sig->per_cu.offset = offset; |
3276 | ||
3277 | slot = htab_find_slot (types_htab, type_sig, INSERT); | |
3278 | gdb_assert (slot != NULL); | |
3279 | if (*slot != NULL) | |
3280 | { | |
3281 | const struct signatured_type *dup_sig = *slot; | |
b3c8eb43 | 3282 | |
8b70b953 TT |
3283 | complaint (&symfile_complaints, |
3284 | _("debug type entry at offset 0x%x is duplicate to the " | |
3285 | "entry at offset 0x%x, signature 0x%s"), | |
3286 | offset, dup_sig->per_cu.offset, | |
3287 | phex (signature, sizeof (signature))); | |
3288 | gdb_assert (signature == dup_sig->signature); | |
3289 | } | |
3290 | *slot = type_sig; | |
348e048f | 3291 | |
8b70b953 TT |
3292 | if (dwarf2_die_debug) |
3293 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
3294 | offset, phex (signature, sizeof (signature))); | |
348e048f | 3295 | |
8b70b953 TT |
3296 | info_ptr = info_ptr + initial_length_size + length; |
3297 | } | |
348e048f DE |
3298 | } |
3299 | ||
3300 | dwarf2_per_objfile->signatured_types = types_htab; | |
3301 | ||
1fd400ff TT |
3302 | dwarf2_per_objfile->n_type_comp_units = htab_elements (types_htab); |
3303 | dwarf2_per_objfile->type_comp_units | |
3304 | = obstack_alloc (&objfile->objfile_obstack, | |
3305 | dwarf2_per_objfile->n_type_comp_units | |
3306 | * sizeof (struct dwarf2_per_cu_data *)); | |
3307 | iter = &dwarf2_per_objfile->type_comp_units[0]; | |
3308 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_list, &iter); | |
3309 | gdb_assert (iter - &dwarf2_per_objfile->type_comp_units[0] | |
3310 | == dwarf2_per_objfile->n_type_comp_units); | |
3311 | ||
348e048f DE |
3312 | return 1; |
3313 | } | |
3314 | ||
3315 | /* Lookup a signature based type. | |
3316 | Returns NULL if SIG is not present in the table. */ | |
3317 | ||
3318 | static struct signatured_type * | |
3319 | lookup_signatured_type (struct objfile *objfile, ULONGEST sig) | |
3320 | { | |
3321 | struct signatured_type find_entry, *entry; | |
3322 | ||
3323 | if (dwarf2_per_objfile->signatured_types == NULL) | |
3324 | { | |
3325 | complaint (&symfile_complaints, | |
55f1336d | 3326 | _("missing `.debug_types' section for DW_FORM_ref_sig8 die")); |
348e048f DE |
3327 | return 0; |
3328 | } | |
3329 | ||
3330 | find_entry.signature = sig; | |
3331 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
3332 | return entry; | |
3333 | } | |
3334 | ||
d85a05f0 DJ |
3335 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
3336 | ||
3337 | static void | |
3338 | init_cu_die_reader (struct die_reader_specs *reader, | |
3339 | struct dwarf2_cu *cu) | |
3340 | { | |
3341 | reader->abfd = cu->objfile->obfd; | |
3342 | reader->cu = cu; | |
b0df02fd | 3343 | if (cu->per_cu->debug_types_section) |
be391dca | 3344 | { |
b0df02fd DE |
3345 | gdb_assert (cu->per_cu->debug_types_section->readin); |
3346 | reader->buffer = cu->per_cu->debug_types_section->buffer; | |
be391dca | 3347 | } |
d85a05f0 | 3348 | else |
be391dca TT |
3349 | { |
3350 | gdb_assert (dwarf2_per_objfile->info.readin); | |
3351 | reader->buffer = dwarf2_per_objfile->info.buffer; | |
3352 | } | |
d85a05f0 DJ |
3353 | } |
3354 | ||
3355 | /* Find the base address of the compilation unit for range lists and | |
3356 | location lists. It will normally be specified by DW_AT_low_pc. | |
3357 | In DWARF-3 draft 4, the base address could be overridden by | |
3358 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3359 | compilation units with discontinuous ranges. */ | |
3360 | ||
3361 | static void | |
3362 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3363 | { | |
3364 | struct attribute *attr; | |
3365 | ||
3366 | cu->base_known = 0; | |
3367 | cu->base_address = 0; | |
3368 | ||
3369 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3370 | if (attr) | |
3371 | { | |
3372 | cu->base_address = DW_ADDR (attr); | |
3373 | cu->base_known = 1; | |
3374 | } | |
3375 | else | |
3376 | { | |
3377 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3378 | if (attr) | |
3379 | { | |
3380 | cu->base_address = DW_ADDR (attr); | |
3381 | cu->base_known = 1; | |
3382 | } | |
3383 | } | |
3384 | } | |
3385 | ||
348e048f DE |
3386 | /* Subroutine of process_type_comp_unit and dwarf2_build_psymtabs_hard |
3387 | to combine the common parts. | |
93311388 | 3388 | Process a compilation unit for a psymtab. |
348e048f DE |
3389 | BUFFER is a pointer to the beginning of the dwarf section buffer, |
3390 | either .debug_info or debug_types. | |
93311388 DE |
3391 | INFO_PTR is a pointer to the start of the CU. |
3392 | Returns a pointer to the next CU. */ | |
aaa75496 | 3393 | |
93311388 | 3394 | static gdb_byte * |
a0f42c21 | 3395 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, |
93311388 DE |
3396 | gdb_byte *buffer, gdb_byte *info_ptr, |
3397 | unsigned int buffer_size) | |
c906108c | 3398 | { |
a0f42c21 | 3399 | struct objfile *objfile = this_cu->objfile; |
c906108c | 3400 | bfd *abfd = objfile->obfd; |
93311388 | 3401 | gdb_byte *beg_of_comp_unit = info_ptr; |
d85a05f0 | 3402 | struct die_info *comp_unit_die; |
c906108c | 3403 | struct partial_symtab *pst; |
5734ee8b | 3404 | CORE_ADDR baseaddr; |
93311388 DE |
3405 | struct cleanup *back_to_inner; |
3406 | struct dwarf2_cu cu; | |
d85a05f0 DJ |
3407 | int has_children, has_pc_info; |
3408 | struct attribute *attr; | |
d85a05f0 DJ |
3409 | CORE_ADDR best_lowpc = 0, best_highpc = 0; |
3410 | struct die_reader_specs reader_specs; | |
3e2a0cee | 3411 | const char *filename; |
c906108c | 3412 | |
9816fde3 | 3413 | init_one_comp_unit (&cu, objfile); |
93311388 | 3414 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); |
ae038cb0 | 3415 | |
93311388 DE |
3416 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, |
3417 | buffer, buffer_size, | |
460c1c54 | 3418 | abfd, |
b0df02fd | 3419 | this_cu->debug_types_section != NULL); |
10b3939b | 3420 | |
6caca83c CC |
3421 | /* Skip dummy compilation units. */ |
3422 | if (info_ptr >= buffer + buffer_size | |
3423 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
3424 | { | |
3425 | info_ptr = (beg_of_comp_unit + cu.header.length | |
3426 | + cu.header.initial_length_size); | |
3427 | do_cleanups (back_to_inner); | |
3428 | return info_ptr; | |
3429 | } | |
3430 | ||
93311388 | 3431 | cu.list_in_scope = &file_symbols; |
af703f96 | 3432 | |
328c9494 DJ |
3433 | /* If this compilation unit was already read in, free the |
3434 | cached copy in order to read it in again. This is | |
3435 | necessary because we skipped some symbols when we first | |
3436 | read in the compilation unit (see load_partial_dies). | |
3437 | This problem could be avoided, but the benefit is | |
3438 | unclear. */ | |
3439 | if (this_cu->cu != NULL) | |
3440 | free_one_cached_comp_unit (this_cu->cu); | |
3441 | ||
3442 | /* Note that this is a pointer to our stack frame, being | |
3443 | added to a global data structure. It will be cleaned up | |
3444 | in free_stack_comp_unit when we finish with this | |
3445 | compilation unit. */ | |
3446 | this_cu->cu = &cu; | |
d85a05f0 DJ |
3447 | cu.per_cu = this_cu; |
3448 | ||
93311388 DE |
3449 | /* Read the abbrevs for this compilation unit into a table. */ |
3450 | dwarf2_read_abbrevs (abfd, &cu); | |
3451 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
af703f96 | 3452 | |
93311388 | 3453 | /* Read the compilation unit die. */ |
d85a05f0 DJ |
3454 | init_cu_die_reader (&reader_specs, &cu); |
3455 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3456 | &has_children); | |
93311388 | 3457 | |
b0df02fd | 3458 | if (this_cu->debug_types_section) |
348e048f | 3459 | { |
b3c8eb43 JK |
3460 | /* LENGTH has not been set yet for type units. */ |
3461 | gdb_assert (this_cu->offset == cu.header.offset); | |
348e048f DE |
3462 | this_cu->length = cu.header.length + cu.header.initial_length_size; |
3463 | } | |
d85a05f0 | 3464 | else if (comp_unit_die->tag == DW_TAG_partial_unit) |
c906108c | 3465 | { |
93311388 DE |
3466 | info_ptr = (beg_of_comp_unit + cu.header.length |
3467 | + cu.header.initial_length_size); | |
3468 | do_cleanups (back_to_inner); | |
3469 | return info_ptr; | |
3470 | } | |
72bf9492 | 3471 | |
9816fde3 | 3472 | prepare_one_comp_unit (&cu, comp_unit_die); |
c906108c | 3473 | |
93311388 | 3474 | /* Allocate a new partial symbol table structure. */ |
d85a05f0 | 3475 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, &cu); |
3e2a0cee TT |
3476 | if (attr == NULL || !DW_STRING (attr)) |
3477 | filename = ""; | |
3478 | else | |
3479 | filename = DW_STRING (attr); | |
93311388 | 3480 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
3e2a0cee | 3481 | filename, |
93311388 DE |
3482 | /* TEXTLOW and TEXTHIGH are set below. */ |
3483 | 0, | |
3484 | objfile->global_psymbols.next, | |
3485 | objfile->static_psymbols.next); | |
9750bca9 | 3486 | pst->psymtabs_addrmap_supported = 1; |
72bf9492 | 3487 | |
d85a05f0 DJ |
3488 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, &cu); |
3489 | if (attr != NULL) | |
3490 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 3491 | |
e38df1d0 | 3492 | pst->read_symtab_private = this_cu; |
72bf9492 | 3493 | |
93311388 | 3494 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 3495 | |
0963b4bd | 3496 | /* Store the function that reads in the rest of the symbol table. */ |
93311388 | 3497 | pst->read_symtab = dwarf2_psymtab_to_symtab; |
57349743 | 3498 | |
9291a0cd | 3499 | this_cu->v.psymtab = pst; |
c906108c | 3500 | |
d85a05f0 DJ |
3501 | dwarf2_find_base_address (comp_unit_die, &cu); |
3502 | ||
93311388 DE |
3503 | /* Possibly set the default values of LOWPC and HIGHPC from |
3504 | `DW_AT_ranges'. */ | |
d85a05f0 DJ |
3505 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
3506 | &best_highpc, &cu, pst); | |
3507 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
93311388 DE |
3508 | /* Store the contiguous range if it is not empty; it can be empty for |
3509 | CUs with no code. */ | |
3510 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
3511 | best_lowpc + baseaddr, |
3512 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
3513 | |
3514 | /* Check if comp unit has_children. | |
3515 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 3516 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 3517 | if (has_children) |
93311388 DE |
3518 | { |
3519 | struct partial_die_info *first_die; | |
3520 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 3521 | |
93311388 DE |
3522 | lowpc = ((CORE_ADDR) -1); |
3523 | highpc = ((CORE_ADDR) 0); | |
c906108c | 3524 | |
93311388 | 3525 | first_die = load_partial_dies (abfd, buffer, info_ptr, 1, &cu); |
c906108c | 3526 | |
93311388 | 3527 | scan_partial_symbols (first_die, &lowpc, &highpc, |
d85a05f0 | 3528 | ! has_pc_info, &cu); |
57c22c6c | 3529 | |
93311388 DE |
3530 | /* If we didn't find a lowpc, set it to highpc to avoid |
3531 | complaints from `maint check'. */ | |
3532 | if (lowpc == ((CORE_ADDR) -1)) | |
3533 | lowpc = highpc; | |
10b3939b | 3534 | |
93311388 DE |
3535 | /* If the compilation unit didn't have an explicit address range, |
3536 | then use the information extracted from its child dies. */ | |
d85a05f0 | 3537 | if (! has_pc_info) |
93311388 | 3538 | { |
d85a05f0 DJ |
3539 | best_lowpc = lowpc; |
3540 | best_highpc = highpc; | |
93311388 DE |
3541 | } |
3542 | } | |
d85a05f0 DJ |
3543 | pst->textlow = best_lowpc + baseaddr; |
3544 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 3545 | |
93311388 DE |
3546 | pst->n_global_syms = objfile->global_psymbols.next - |
3547 | (objfile->global_psymbols.list + pst->globals_offset); | |
3548 | pst->n_static_syms = objfile->static_psymbols.next - | |
3549 | (objfile->static_psymbols.list + pst->statics_offset); | |
3550 | sort_pst_symbols (pst); | |
c906108c | 3551 | |
93311388 DE |
3552 | info_ptr = (beg_of_comp_unit + cu.header.length |
3553 | + cu.header.initial_length_size); | |
ae038cb0 | 3554 | |
b0df02fd | 3555 | if (this_cu->debug_types_section) |
348e048f DE |
3556 | { |
3557 | /* It's not clear we want to do anything with stmt lists here. | |
3558 | Waiting to see what gcc ultimately does. */ | |
3559 | } | |
d85a05f0 | 3560 | else |
93311388 DE |
3561 | { |
3562 | /* Get the list of files included in the current compilation unit, | |
3563 | and build a psymtab for each of them. */ | |
d85a05f0 | 3564 | dwarf2_build_include_psymtabs (&cu, comp_unit_die, pst); |
93311388 | 3565 | } |
ae038cb0 | 3566 | |
93311388 | 3567 | do_cleanups (back_to_inner); |
ae038cb0 | 3568 | |
93311388 DE |
3569 | return info_ptr; |
3570 | } | |
ff013f42 | 3571 | |
348e048f DE |
3572 | /* Traversal function for htab_traverse_noresize. |
3573 | Process one .debug_types comp-unit. */ | |
3574 | ||
3575 | static int | |
3576 | process_type_comp_unit (void **slot, void *info) | |
3577 | { | |
3578 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
348e048f DE |
3579 | struct dwarf2_per_cu_data *this_cu; |
3580 | ||
a0f42c21 | 3581 | gdb_assert (info == NULL); |
348e048f | 3582 | this_cu = &entry->per_cu; |
348e048f | 3583 | |
b0df02fd | 3584 | gdb_assert (this_cu->debug_types_section->readin); |
a0f42c21 | 3585 | process_psymtab_comp_unit (this_cu, |
b0df02fd DE |
3586 | this_cu->debug_types_section->buffer, |
3587 | (this_cu->debug_types_section->buffer | |
8b70b953 | 3588 | + this_cu->offset), |
b0df02fd | 3589 | this_cu->debug_types_section->size); |
348e048f DE |
3590 | |
3591 | return 1; | |
3592 | } | |
3593 | ||
3594 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
3595 | Build partial symbol tables for the .debug_types comp-units. */ | |
3596 | ||
3597 | static void | |
3598 | build_type_psymtabs (struct objfile *objfile) | |
3599 | { | |
3600 | if (! create_debug_types_hash_table (objfile)) | |
3601 | return; | |
3602 | ||
3603 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
a0f42c21 | 3604 | process_type_comp_unit, NULL); |
348e048f DE |
3605 | } |
3606 | ||
60606b2c TT |
3607 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
3608 | ||
3609 | static void | |
3610 | psymtabs_addrmap_cleanup (void *o) | |
3611 | { | |
3612 | struct objfile *objfile = o; | |
ec61707d | 3613 | |
60606b2c TT |
3614 | objfile->psymtabs_addrmap = NULL; |
3615 | } | |
3616 | ||
93311388 DE |
3617 | /* Build the partial symbol table by doing a quick pass through the |
3618 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 3619 | |
93311388 | 3620 | static void |
c67a9c90 | 3621 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 3622 | { |
93311388 | 3623 | gdb_byte *info_ptr; |
60606b2c TT |
3624 | struct cleanup *back_to, *addrmap_cleanup; |
3625 | struct obstack temp_obstack; | |
93311388 | 3626 | |
98bfdba5 PA |
3627 | dwarf2_per_objfile->reading_partial_symbols = 1; |
3628 | ||
be391dca | 3629 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
93311388 | 3630 | info_ptr = dwarf2_per_objfile->info.buffer; |
91c24f0a | 3631 | |
93311388 DE |
3632 | /* Any cached compilation units will be linked by the per-objfile |
3633 | read_in_chain. Make sure to free them when we're done. */ | |
3634 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 3635 | |
348e048f DE |
3636 | build_type_psymtabs (objfile); |
3637 | ||
93311388 | 3638 | create_all_comp_units (objfile); |
c906108c | 3639 | |
60606b2c TT |
3640 | /* Create a temporary address map on a temporary obstack. We later |
3641 | copy this to the final obstack. */ | |
3642 | obstack_init (&temp_obstack); | |
3643 | make_cleanup_obstack_free (&temp_obstack); | |
3644 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
3645 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 3646 | |
93311388 DE |
3647 | /* Since the objects we're extracting from .debug_info vary in |
3648 | length, only the individual functions to extract them (like | |
3649 | read_comp_unit_head and load_partial_die) can really know whether | |
3650 | the buffer is large enough to hold another complete object. | |
c906108c | 3651 | |
93311388 DE |
3652 | At the moment, they don't actually check that. If .debug_info |
3653 | holds just one extra byte after the last compilation unit's dies, | |
3654 | then read_comp_unit_head will happily read off the end of the | |
3655 | buffer. read_partial_die is similarly casual. Those functions | |
3656 | should be fixed. | |
c906108c | 3657 | |
93311388 DE |
3658 | For this loop condition, simply checking whether there's any data |
3659 | left at all should be sufficient. */ | |
c906108c | 3660 | |
93311388 DE |
3661 | while (info_ptr < (dwarf2_per_objfile->info.buffer |
3662 | + dwarf2_per_objfile->info.size)) | |
3663 | { | |
3664 | struct dwarf2_per_cu_data *this_cu; | |
dd373385 | 3665 | |
3e43a32a MS |
3666 | this_cu = dwarf2_find_comp_unit (info_ptr |
3667 | - dwarf2_per_objfile->info.buffer, | |
93311388 | 3668 | objfile); |
aaa75496 | 3669 | |
a0f42c21 | 3670 | info_ptr = process_psymtab_comp_unit (this_cu, |
93311388 DE |
3671 | dwarf2_per_objfile->info.buffer, |
3672 | info_ptr, | |
3673 | dwarf2_per_objfile->info.size); | |
c906108c | 3674 | } |
ff013f42 JK |
3675 | |
3676 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
3677 | &objfile->objfile_obstack); | |
60606b2c | 3678 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 3679 | |
ae038cb0 DJ |
3680 | do_cleanups (back_to); |
3681 | } | |
3682 | ||
93311388 | 3683 | /* Load the partial DIEs for a secondary CU into memory. */ |
ae038cb0 DJ |
3684 | |
3685 | static void | |
a0f42c21 | 3686 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) |
ae038cb0 | 3687 | { |
a0f42c21 | 3688 | struct objfile *objfile = this_cu->objfile; |
ae038cb0 | 3689 | bfd *abfd = objfile->obfd; |
adabb602 | 3690 | gdb_byte *info_ptr; |
d85a05f0 | 3691 | struct die_info *comp_unit_die; |
ae038cb0 | 3692 | struct dwarf2_cu *cu; |
1d9ec526 | 3693 | struct cleanup *free_abbrevs_cleanup, *free_cu_cleanup = NULL; |
d85a05f0 DJ |
3694 | int has_children; |
3695 | struct die_reader_specs reader_specs; | |
98bfdba5 | 3696 | int read_cu = 0; |
ae038cb0 | 3697 | |
b0df02fd | 3698 | gdb_assert (! this_cu->debug_types_section); |
348e048f | 3699 | |
be391dca | 3700 | gdb_assert (dwarf2_per_objfile->info.readin); |
dce234bc | 3701 | info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset; |
ae038cb0 | 3702 | |
98bfdba5 PA |
3703 | if (this_cu->cu == NULL) |
3704 | { | |
9816fde3 JK |
3705 | cu = xmalloc (sizeof (*cu)); |
3706 | init_one_comp_unit (cu, objfile); | |
ae038cb0 | 3707 | |
98bfdba5 | 3708 | read_cu = 1; |
ae038cb0 | 3709 | |
98bfdba5 | 3710 | /* If an error occurs while loading, release our storage. */ |
68dc6402 | 3711 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
328c9494 | 3712 | |
98bfdba5 PA |
3713 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, |
3714 | dwarf2_per_objfile->info.buffer, | |
3715 | dwarf2_per_objfile->info.size, | |
460c1c54 | 3716 | abfd, 0); |
ae038cb0 | 3717 | |
6caca83c CC |
3718 | /* Skip dummy compilation units. */ |
3719 | if (info_ptr >= (dwarf2_per_objfile->info.buffer | |
3720 | + dwarf2_per_objfile->info.size) | |
3721 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
3722 | { | |
3723 | do_cleanups (free_cu_cleanup); | |
3724 | return; | |
3725 | } | |
3726 | ||
98bfdba5 PA |
3727 | /* Link this compilation unit into the compilation unit tree. */ |
3728 | this_cu->cu = cu; | |
3729 | cu->per_cu = this_cu; | |
98bfdba5 PA |
3730 | |
3731 | /* Link this CU into read_in_chain. */ | |
3732 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
3733 | dwarf2_per_objfile->read_in_chain = this_cu; | |
3734 | } | |
3735 | else | |
3736 | { | |
3737 | cu = this_cu->cu; | |
3738 | info_ptr += cu->header.first_die_offset; | |
3739 | } | |
ae038cb0 DJ |
3740 | |
3741 | /* Read the abbrevs for this compilation unit into a table. */ | |
98bfdba5 | 3742 | gdb_assert (cu->dwarf2_abbrevs == NULL); |
ae038cb0 | 3743 | dwarf2_read_abbrevs (abfd, cu); |
98bfdba5 | 3744 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); |
ae038cb0 DJ |
3745 | |
3746 | /* Read the compilation unit die. */ | |
d85a05f0 DJ |
3747 | init_cu_die_reader (&reader_specs, cu); |
3748 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3749 | &has_children); | |
ae038cb0 | 3750 | |
9816fde3 | 3751 | prepare_one_comp_unit (cu, comp_unit_die); |
ae038cb0 | 3752 | |
ae038cb0 DJ |
3753 | /* Check if comp unit has_children. |
3754 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 3755 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 3756 | if (has_children) |
93311388 | 3757 | load_partial_dies (abfd, dwarf2_per_objfile->info.buffer, info_ptr, 0, cu); |
ae038cb0 | 3758 | |
98bfdba5 PA |
3759 | do_cleanups (free_abbrevs_cleanup); |
3760 | ||
3761 | if (read_cu) | |
3762 | { | |
3763 | /* We've successfully allocated this compilation unit. Let our | |
3764 | caller clean it up when finished with it. */ | |
3765 | discard_cleanups (free_cu_cleanup); | |
3766 | } | |
ae038cb0 DJ |
3767 | } |
3768 | ||
9cdd5dbd DE |
3769 | /* Create a list of all compilation units in OBJFILE. |
3770 | This is only done for -readnow and building partial symtabs. */ | |
ae038cb0 DJ |
3771 | |
3772 | static void | |
3773 | create_all_comp_units (struct objfile *objfile) | |
3774 | { | |
3775 | int n_allocated; | |
3776 | int n_comp_units; | |
3777 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
3778 | gdb_byte *info_ptr; |
3779 | ||
3780 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
3781 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
3782 | |
3783 | n_comp_units = 0; | |
3784 | n_allocated = 10; | |
3785 | all_comp_units = xmalloc (n_allocated | |
3786 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 3787 | |
3e43a32a MS |
3788 | while (info_ptr < dwarf2_per_objfile->info.buffer |
3789 | + dwarf2_per_objfile->info.size) | |
ae038cb0 | 3790 | { |
c764a876 | 3791 | unsigned int length, initial_length_size; |
ae038cb0 | 3792 | struct dwarf2_per_cu_data *this_cu; |
c764a876 | 3793 | unsigned int offset; |
ae038cb0 | 3794 | |
dce234bc | 3795 | offset = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
3796 | |
3797 | /* Read just enough information to find out where the next | |
3798 | compilation unit is. */ | |
c764a876 DE |
3799 | length = read_initial_length (objfile->obfd, info_ptr, |
3800 | &initial_length_size); | |
ae038cb0 DJ |
3801 | |
3802 | /* Save the compilation unit for later lookup. */ | |
3803 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
3804 | sizeof (struct dwarf2_per_cu_data)); | |
3805 | memset (this_cu, 0, sizeof (*this_cu)); | |
3806 | this_cu->offset = offset; | |
c764a876 | 3807 | this_cu->length = length + initial_length_size; |
9291a0cd | 3808 | this_cu->objfile = objfile; |
ae038cb0 DJ |
3809 | |
3810 | if (n_comp_units == n_allocated) | |
3811 | { | |
3812 | n_allocated *= 2; | |
3813 | all_comp_units = xrealloc (all_comp_units, | |
3814 | n_allocated | |
3815 | * sizeof (struct dwarf2_per_cu_data *)); | |
3816 | } | |
3817 | all_comp_units[n_comp_units++] = this_cu; | |
3818 | ||
3819 | info_ptr = info_ptr + this_cu->length; | |
3820 | } | |
3821 | ||
3822 | dwarf2_per_objfile->all_comp_units | |
3823 | = obstack_alloc (&objfile->objfile_obstack, | |
3824 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3825 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
3826 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3827 | xfree (all_comp_units); | |
3828 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
3829 | } |
3830 | ||
5734ee8b DJ |
3831 | /* Process all loaded DIEs for compilation unit CU, starting at |
3832 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
3833 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
3834 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
3835 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
3836 | and record the covered ranges in the addrmap. */ | |
c906108c | 3837 | |
72bf9492 DJ |
3838 | static void |
3839 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 3840 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 3841 | { |
72bf9492 | 3842 | struct partial_die_info *pdi; |
c906108c | 3843 | |
91c24f0a DC |
3844 | /* Now, march along the PDI's, descending into ones which have |
3845 | interesting children but skipping the children of the other ones, | |
3846 | until we reach the end of the compilation unit. */ | |
c906108c | 3847 | |
72bf9492 | 3848 | pdi = first_die; |
91c24f0a | 3849 | |
72bf9492 DJ |
3850 | while (pdi != NULL) |
3851 | { | |
3852 | fixup_partial_die (pdi, cu); | |
c906108c | 3853 | |
f55ee35c | 3854 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
3855 | children, so we need to look at them. Ditto for anonymous |
3856 | enums. */ | |
933c6fe4 | 3857 | |
72bf9492 | 3858 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
f55ee35c | 3859 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type) |
c906108c | 3860 | { |
72bf9492 | 3861 | switch (pdi->tag) |
c906108c SS |
3862 | { |
3863 | case DW_TAG_subprogram: | |
5734ee8b | 3864 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 3865 | break; |
72929c62 | 3866 | case DW_TAG_constant: |
c906108c SS |
3867 | case DW_TAG_variable: |
3868 | case DW_TAG_typedef: | |
91c24f0a | 3869 | case DW_TAG_union_type: |
72bf9492 | 3870 | if (!pdi->is_declaration) |
63d06c5c | 3871 | { |
72bf9492 | 3872 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
3873 | } |
3874 | break; | |
c906108c | 3875 | case DW_TAG_class_type: |
680b30c7 | 3876 | case DW_TAG_interface_type: |
c906108c | 3877 | case DW_TAG_structure_type: |
72bf9492 | 3878 | if (!pdi->is_declaration) |
c906108c | 3879 | { |
72bf9492 | 3880 | add_partial_symbol (pdi, cu); |
c906108c SS |
3881 | } |
3882 | break; | |
91c24f0a | 3883 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
3884 | if (!pdi->is_declaration) |
3885 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
3886 | break; |
3887 | case DW_TAG_base_type: | |
a02abb62 | 3888 | case DW_TAG_subrange_type: |
c906108c | 3889 | /* File scope base type definitions are added to the partial |
c5aa993b | 3890 | symbol table. */ |
72bf9492 | 3891 | add_partial_symbol (pdi, cu); |
c906108c | 3892 | break; |
d9fa45fe | 3893 | case DW_TAG_namespace: |
5734ee8b | 3894 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 3895 | break; |
5d7cb8df JK |
3896 | case DW_TAG_module: |
3897 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
3898 | break; | |
c906108c SS |
3899 | default: |
3900 | break; | |
3901 | } | |
3902 | } | |
3903 | ||
72bf9492 DJ |
3904 | /* If the die has a sibling, skip to the sibling. */ |
3905 | ||
3906 | pdi = pdi->die_sibling; | |
3907 | } | |
3908 | } | |
3909 | ||
3910 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 3911 | |
72bf9492 | 3912 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
3913 | name is concatenated with "::" and the partial DIE's name. For |
3914 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
3915 | Enumerators are an exception; they use the scope of their parent |
3916 | enumeration type, i.e. the name of the enumeration type is not | |
3917 | prepended to the enumerator. | |
91c24f0a | 3918 | |
72bf9492 DJ |
3919 | There are two complexities. One is DW_AT_specification; in this |
3920 | case "parent" means the parent of the target of the specification, | |
3921 | instead of the direct parent of the DIE. The other is compilers | |
3922 | which do not emit DW_TAG_namespace; in this case we try to guess | |
3923 | the fully qualified name of structure types from their members' | |
3924 | linkage names. This must be done using the DIE's children rather | |
3925 | than the children of any DW_AT_specification target. We only need | |
3926 | to do this for structures at the top level, i.e. if the target of | |
3927 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
3928 | have a parent. */ | |
3929 | ||
3930 | /* Compute the scope prefix associated with PDI's parent, in | |
3931 | compilation unit CU. The result will be allocated on CU's | |
3932 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
3933 | field. NULL is returned if no prefix is necessary. */ | |
3934 | static char * | |
3935 | partial_die_parent_scope (struct partial_die_info *pdi, | |
3936 | struct dwarf2_cu *cu) | |
3937 | { | |
3938 | char *grandparent_scope; | |
3939 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 3940 | |
72bf9492 DJ |
3941 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
3942 | then this means the parent of the specification DIE. */ | |
3943 | ||
3944 | real_pdi = pdi; | |
72bf9492 | 3945 | while (real_pdi->has_specification) |
10b3939b | 3946 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
3947 | |
3948 | parent = real_pdi->die_parent; | |
3949 | if (parent == NULL) | |
3950 | return NULL; | |
3951 | ||
3952 | if (parent->scope_set) | |
3953 | return parent->scope; | |
3954 | ||
3955 | fixup_partial_die (parent, cu); | |
3956 | ||
10b3939b | 3957 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 3958 | |
acebe513 UW |
3959 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
3960 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
3961 | Work around this problem here. */ | |
3962 | if (cu->language == language_cplus | |
6e70227d | 3963 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
3964 | && strcmp (parent->name, "::") == 0 |
3965 | && grandparent_scope == NULL) | |
3966 | { | |
3967 | parent->scope = NULL; | |
3968 | parent->scope_set = 1; | |
3969 | return NULL; | |
3970 | } | |
3971 | ||
9c6c53f7 SA |
3972 | if (pdi->tag == DW_TAG_enumerator) |
3973 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
3974 | parent->scope = grandparent_scope; | |
3975 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 3976 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
3977 | || parent->tag == DW_TAG_structure_type |
3978 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 3979 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
3980 | || parent->tag == DW_TAG_union_type |
3981 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
3982 | { |
3983 | if (grandparent_scope == NULL) | |
3984 | parent->scope = parent->name; | |
3985 | else | |
3e43a32a MS |
3986 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
3987 | grandparent_scope, | |
f55ee35c | 3988 | parent->name, 0, cu); |
72bf9492 | 3989 | } |
72bf9492 DJ |
3990 | else |
3991 | { | |
3992 | /* FIXME drow/2004-04-01: What should we be doing with | |
3993 | function-local names? For partial symbols, we should probably be | |
3994 | ignoring them. */ | |
3995 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3996 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
3997 | parent->tag, pdi->offset); |
3998 | parent->scope = grandparent_scope; | |
c906108c SS |
3999 | } |
4000 | ||
72bf9492 DJ |
4001 | parent->scope_set = 1; |
4002 | return parent->scope; | |
4003 | } | |
4004 | ||
4005 | /* Return the fully scoped name associated with PDI, from compilation unit | |
4006 | CU. The result will be allocated with malloc. */ | |
4007 | static char * | |
4008 | partial_die_full_name (struct partial_die_info *pdi, | |
4009 | struct dwarf2_cu *cu) | |
4010 | { | |
4011 | char *parent_scope; | |
4012 | ||
98bfdba5 PA |
4013 | /* If this is a template instantiation, we can not work out the |
4014 | template arguments from partial DIEs. So, unfortunately, we have | |
4015 | to go through the full DIEs. At least any work we do building | |
4016 | types here will be reused if full symbols are loaded later. */ | |
4017 | if (pdi->has_template_arguments) | |
4018 | { | |
4019 | fixup_partial_die (pdi, cu); | |
4020 | ||
4021 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
4022 | { | |
4023 | struct die_info *die; | |
4024 | struct attribute attr; | |
4025 | struct dwarf2_cu *ref_cu = cu; | |
4026 | ||
4027 | attr.name = 0; | |
4028 | attr.form = DW_FORM_ref_addr; | |
4029 | attr.u.addr = pdi->offset; | |
4030 | die = follow_die_ref (NULL, &attr, &ref_cu); | |
4031 | ||
4032 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
4033 | } | |
4034 | } | |
4035 | ||
72bf9492 DJ |
4036 | parent_scope = partial_die_parent_scope (pdi, cu); |
4037 | if (parent_scope == NULL) | |
4038 | return NULL; | |
4039 | else | |
f55ee35c | 4040 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
4041 | } |
4042 | ||
4043 | static void | |
72bf9492 | 4044 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 4045 | { |
e7c27a73 | 4046 | struct objfile *objfile = cu->objfile; |
c906108c | 4047 | CORE_ADDR addr = 0; |
decbce07 | 4048 | char *actual_name = NULL; |
5c4e30ca | 4049 | const struct partial_symbol *psym = NULL; |
e142c38c | 4050 | CORE_ADDR baseaddr; |
72bf9492 | 4051 | int built_actual_name = 0; |
e142c38c DJ |
4052 | |
4053 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 4054 | |
94af9270 KS |
4055 | actual_name = partial_die_full_name (pdi, cu); |
4056 | if (actual_name) | |
4057 | built_actual_name = 1; | |
63d06c5c | 4058 | |
72bf9492 DJ |
4059 | if (actual_name == NULL) |
4060 | actual_name = pdi->name; | |
4061 | ||
c906108c SS |
4062 | switch (pdi->tag) |
4063 | { | |
4064 | case DW_TAG_subprogram: | |
2cfa0c8d | 4065 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 4066 | { |
2cfa0c8d JB |
4067 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
4068 | of the global scope. But in Ada, we want to be able to access | |
4069 | nested procedures globally. So all Ada subprograms are stored | |
4070 | in the global scope. */ | |
f47fb265 | 4071 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 4072 | mst_text, objfile); */ |
f47fb265 MS |
4073 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4074 | built_actual_name, | |
4075 | VAR_DOMAIN, LOC_BLOCK, | |
4076 | &objfile->global_psymbols, | |
4077 | 0, pdi->lowpc + baseaddr, | |
4078 | cu->language, objfile); | |
c906108c SS |
4079 | } |
4080 | else | |
4081 | { | |
f47fb265 | 4082 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 4083 | mst_file_text, objfile); */ |
f47fb265 MS |
4084 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4085 | built_actual_name, | |
4086 | VAR_DOMAIN, LOC_BLOCK, | |
4087 | &objfile->static_psymbols, | |
4088 | 0, pdi->lowpc + baseaddr, | |
4089 | cu->language, objfile); | |
c906108c SS |
4090 | } |
4091 | break; | |
72929c62 JB |
4092 | case DW_TAG_constant: |
4093 | { | |
4094 | struct psymbol_allocation_list *list; | |
4095 | ||
4096 | if (pdi->is_external) | |
4097 | list = &objfile->global_psymbols; | |
4098 | else | |
4099 | list = &objfile->static_psymbols; | |
f47fb265 MS |
4100 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4101 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
4102 | list, 0, 0, cu->language, objfile); | |
72929c62 JB |
4103 | } |
4104 | break; | |
c906108c | 4105 | case DW_TAG_variable: |
caac4577 JG |
4106 | if (pdi->locdesc) |
4107 | addr = decode_locdesc (pdi->locdesc, cu); | |
4108 | ||
4109 | if (pdi->locdesc | |
4110 | && addr == 0 | |
4111 | && !dwarf2_per_objfile->has_section_at_zero) | |
4112 | { | |
4113 | /* A global or static variable may also have been stripped | |
4114 | out by the linker if unused, in which case its address | |
4115 | will be nullified; do not add such variables into partial | |
4116 | symbol table then. */ | |
4117 | } | |
4118 | else if (pdi->is_external) | |
c906108c SS |
4119 | { |
4120 | /* Global Variable. | |
4121 | Don't enter into the minimal symbol tables as there is | |
4122 | a minimal symbol table entry from the ELF symbols already. | |
4123 | Enter into partial symbol table if it has a location | |
4124 | descriptor or a type. | |
4125 | If the location descriptor is missing, new_symbol will create | |
4126 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
4127 | be determined from the minimal symbol table whenever the variable | |
4128 | is referenced. | |
4129 | The address for the partial symbol table entry is not | |
4130 | used by GDB, but it comes in handy for debugging partial symbol | |
4131 | table building. */ | |
4132 | ||
c906108c | 4133 | if (pdi->locdesc || pdi->has_type) |
f47fb265 MS |
4134 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4135 | built_actual_name, | |
4136 | VAR_DOMAIN, LOC_STATIC, | |
4137 | &objfile->global_psymbols, | |
4138 | 0, addr + baseaddr, | |
4139 | cu->language, objfile); | |
c906108c SS |
4140 | } |
4141 | else | |
4142 | { | |
0963b4bd | 4143 | /* Static Variable. Skip symbols without location descriptors. */ |
c906108c | 4144 | if (pdi->locdesc == NULL) |
decbce07 MS |
4145 | { |
4146 | if (built_actual_name) | |
4147 | xfree (actual_name); | |
4148 | return; | |
4149 | } | |
f47fb265 | 4150 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 4151 | mst_file_data, objfile); */ |
f47fb265 MS |
4152 | add_psymbol_to_list (actual_name, strlen (actual_name), |
4153 | built_actual_name, | |
4154 | VAR_DOMAIN, LOC_STATIC, | |
4155 | &objfile->static_psymbols, | |
4156 | 0, addr + baseaddr, | |
4157 | cu->language, objfile); | |
c906108c SS |
4158 | } |
4159 | break; | |
4160 | case DW_TAG_typedef: | |
4161 | case DW_TAG_base_type: | |
a02abb62 | 4162 | case DW_TAG_subrange_type: |
38d518c9 | 4163 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4164 | built_actual_name, |
176620f1 | 4165 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 4166 | &objfile->static_psymbols, |
e142c38c | 4167 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 4168 | break; |
72bf9492 DJ |
4169 | case DW_TAG_namespace: |
4170 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 4171 | built_actual_name, |
72bf9492 DJ |
4172 | VAR_DOMAIN, LOC_TYPEDEF, |
4173 | &objfile->global_psymbols, | |
4174 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
4175 | break; | |
c906108c | 4176 | case DW_TAG_class_type: |
680b30c7 | 4177 | case DW_TAG_interface_type: |
c906108c SS |
4178 | case DW_TAG_structure_type: |
4179 | case DW_TAG_union_type: | |
4180 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
4181 | /* Skip external references. The DWARF standard says in the section |
4182 | about "Structure, Union, and Class Type Entries": "An incomplete | |
4183 | structure, union or class type is represented by a structure, | |
4184 | union or class entry that does not have a byte size attribute | |
4185 | and that has a DW_AT_declaration attribute." */ | |
4186 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
4187 | { |
4188 | if (built_actual_name) | |
4189 | xfree (actual_name); | |
4190 | return; | |
4191 | } | |
fa4028e9 | 4192 | |
63d06c5c DC |
4193 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
4194 | static vs. global. */ | |
38d518c9 | 4195 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4196 | built_actual_name, |
176620f1 | 4197 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
4198 | (cu->language == language_cplus |
4199 | || cu->language == language_java) | |
63d06c5c DC |
4200 | ? &objfile->global_psymbols |
4201 | : &objfile->static_psymbols, | |
e142c38c | 4202 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 4203 | |
c906108c SS |
4204 | break; |
4205 | case DW_TAG_enumerator: | |
38d518c9 | 4206 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 4207 | built_actual_name, |
176620f1 | 4208 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
4209 | (cu->language == language_cplus |
4210 | || cu->language == language_java) | |
f6fe98ef DJ |
4211 | ? &objfile->global_psymbols |
4212 | : &objfile->static_psymbols, | |
e142c38c | 4213 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
4214 | break; |
4215 | default: | |
4216 | break; | |
4217 | } | |
5c4e30ca | 4218 | |
72bf9492 DJ |
4219 | if (built_actual_name) |
4220 | xfree (actual_name); | |
c906108c SS |
4221 | } |
4222 | ||
5c4e30ca DC |
4223 | /* Read a partial die corresponding to a namespace; also, add a symbol |
4224 | corresponding to that namespace to the symbol table. NAMESPACE is | |
4225 | the name of the enclosing namespace. */ | |
91c24f0a | 4226 | |
72bf9492 DJ |
4227 | static void |
4228 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 4229 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 4230 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 4231 | { |
72bf9492 | 4232 | /* Add a symbol for the namespace. */ |
e7c27a73 | 4233 | |
72bf9492 | 4234 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
4235 | |
4236 | /* Now scan partial symbols in that namespace. */ | |
4237 | ||
91c24f0a | 4238 | if (pdi->has_children) |
5734ee8b | 4239 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
4240 | } |
4241 | ||
5d7cb8df JK |
4242 | /* Read a partial die corresponding to a Fortran module. */ |
4243 | ||
4244 | static void | |
4245 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
4246 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
4247 | { | |
f55ee35c | 4248 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
4249 | |
4250 | if (pdi->has_children) | |
4251 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
4252 | } | |
4253 | ||
bc30ff58 JB |
4254 | /* Read a partial die corresponding to a subprogram and create a partial |
4255 | symbol for that subprogram. When the CU language allows it, this | |
4256 | routine also defines a partial symbol for each nested subprogram | |
4257 | that this subprogram contains. | |
6e70227d | 4258 | |
bc30ff58 JB |
4259 | DIE my also be a lexical block, in which case we simply search |
4260 | recursively for suprograms defined inside that lexical block. | |
4261 | Again, this is only performed when the CU language allows this | |
4262 | type of definitions. */ | |
4263 | ||
4264 | static void | |
4265 | add_partial_subprogram (struct partial_die_info *pdi, | |
4266 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 4267 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
4268 | { |
4269 | if (pdi->tag == DW_TAG_subprogram) | |
4270 | { | |
4271 | if (pdi->has_pc_info) | |
4272 | { | |
4273 | if (pdi->lowpc < *lowpc) | |
4274 | *lowpc = pdi->lowpc; | |
4275 | if (pdi->highpc > *highpc) | |
4276 | *highpc = pdi->highpc; | |
5734ee8b DJ |
4277 | if (need_pc) |
4278 | { | |
4279 | CORE_ADDR baseaddr; | |
4280 | struct objfile *objfile = cu->objfile; | |
4281 | ||
4282 | baseaddr = ANOFFSET (objfile->section_offsets, | |
4283 | SECT_OFF_TEXT (objfile)); | |
4284 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
4285 | pdi->lowpc + baseaddr, |
4286 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 4287 | cu->per_cu->v.psymtab); |
5734ee8b | 4288 | } |
bc30ff58 | 4289 | if (!pdi->is_declaration) |
e8d05480 JB |
4290 | /* Ignore subprogram DIEs that do not have a name, they are |
4291 | illegal. Do not emit a complaint at this point, we will | |
4292 | do so when we convert this psymtab into a symtab. */ | |
4293 | if (pdi->name) | |
4294 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
4295 | } |
4296 | } | |
6e70227d | 4297 | |
bc30ff58 JB |
4298 | if (! pdi->has_children) |
4299 | return; | |
4300 | ||
4301 | if (cu->language == language_ada) | |
4302 | { | |
4303 | pdi = pdi->die_child; | |
4304 | while (pdi != NULL) | |
4305 | { | |
4306 | fixup_partial_die (pdi, cu); | |
4307 | if (pdi->tag == DW_TAG_subprogram | |
4308 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 4309 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
4310 | pdi = pdi->die_sibling; |
4311 | } | |
4312 | } | |
4313 | } | |
4314 | ||
91c24f0a DC |
4315 | /* Read a partial die corresponding to an enumeration type. */ |
4316 | ||
72bf9492 DJ |
4317 | static void |
4318 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
4319 | struct dwarf2_cu *cu) | |
91c24f0a | 4320 | { |
72bf9492 | 4321 | struct partial_die_info *pdi; |
91c24f0a DC |
4322 | |
4323 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
4324 | add_partial_symbol (enum_pdi, cu); |
4325 | ||
4326 | pdi = enum_pdi->die_child; | |
4327 | while (pdi) | |
91c24f0a | 4328 | { |
72bf9492 | 4329 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 4330 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 4331 | else |
72bf9492 DJ |
4332 | add_partial_symbol (pdi, cu); |
4333 | pdi = pdi->die_sibling; | |
91c24f0a | 4334 | } |
91c24f0a DC |
4335 | } |
4336 | ||
6caca83c CC |
4337 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
4338 | ||
4339 | static unsigned int | |
4340 | peek_abbrev_code (bfd *abfd, gdb_byte *info_ptr) | |
4341 | { | |
4342 | unsigned int bytes_read; | |
4343 | ||
4344 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4345 | } | |
4346 | ||
4bb7a0a7 DJ |
4347 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
4348 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
4349 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
4350 | the initial number. */ | |
4351 | ||
4352 | static struct abbrev_info * | |
fe1b8b76 | 4353 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 4354 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
4355 | { |
4356 | bfd *abfd = cu->objfile->obfd; | |
4357 | unsigned int abbrev_number; | |
4358 | struct abbrev_info *abbrev; | |
4359 | ||
4360 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4361 | ||
4362 | if (abbrev_number == 0) | |
4363 | return NULL; | |
4364 | ||
4365 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
4366 | if (!abbrev) | |
4367 | { | |
3e43a32a MS |
4368 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
4369 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
4370 | } |
4371 | ||
4372 | return abbrev; | |
4373 | } | |
4374 | ||
93311388 DE |
4375 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4376 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
4377 | DIE. Any children of the skipped DIEs will also be skipped. */ |
4378 | ||
fe1b8b76 | 4379 | static gdb_byte * |
93311388 | 4380 | skip_children (gdb_byte *buffer, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
4381 | { |
4382 | struct abbrev_info *abbrev; | |
4383 | unsigned int bytes_read; | |
4384 | ||
4385 | while (1) | |
4386 | { | |
4387 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
4388 | if (abbrev == NULL) | |
4389 | return info_ptr + bytes_read; | |
4390 | else | |
93311388 | 4391 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
4bb7a0a7 DJ |
4392 | } |
4393 | } | |
4394 | ||
93311388 DE |
4395 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4396 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
4397 | abbrev corresponding to that skipped uleb128 should be passed in |
4398 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
4399 | children. */ | |
4400 | ||
fe1b8b76 | 4401 | static gdb_byte * |
93311388 DE |
4402 | skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
4403 | struct abbrev_info *abbrev, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
4404 | { |
4405 | unsigned int bytes_read; | |
4406 | struct attribute attr; | |
4407 | bfd *abfd = cu->objfile->obfd; | |
4408 | unsigned int form, i; | |
4409 | ||
4410 | for (i = 0; i < abbrev->num_attrs; i++) | |
4411 | { | |
4412 | /* The only abbrev we care about is DW_AT_sibling. */ | |
4413 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
4414 | { | |
4415 | read_attribute (&attr, &abbrev->attrs[i], | |
4416 | abfd, info_ptr, cu); | |
4417 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
4418 | complaint (&symfile_complaints, |
4419 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 4420 | else |
93311388 | 4421 | return buffer + dwarf2_get_ref_die_offset (&attr); |
4bb7a0a7 DJ |
4422 | } |
4423 | ||
4424 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
4425 | form = abbrev->attrs[i].form; | |
4426 | skip_attribute: | |
4427 | switch (form) | |
4428 | { | |
4bb7a0a7 | 4429 | case DW_FORM_ref_addr: |
ae411497 TT |
4430 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
4431 | and later it is offset sized. */ | |
4432 | if (cu->header.version == 2) | |
4433 | info_ptr += cu->header.addr_size; | |
4434 | else | |
4435 | info_ptr += cu->header.offset_size; | |
4436 | break; | |
4437 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
4438 | info_ptr += cu->header.addr_size; |
4439 | break; | |
4440 | case DW_FORM_data1: | |
4441 | case DW_FORM_ref1: | |
4442 | case DW_FORM_flag: | |
4443 | info_ptr += 1; | |
4444 | break; | |
2dc7f7b3 TT |
4445 | case DW_FORM_flag_present: |
4446 | break; | |
4bb7a0a7 DJ |
4447 | case DW_FORM_data2: |
4448 | case DW_FORM_ref2: | |
4449 | info_ptr += 2; | |
4450 | break; | |
4451 | case DW_FORM_data4: | |
4452 | case DW_FORM_ref4: | |
4453 | info_ptr += 4; | |
4454 | break; | |
4455 | case DW_FORM_data8: | |
4456 | case DW_FORM_ref8: | |
55f1336d | 4457 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
4458 | info_ptr += 8; |
4459 | break; | |
4460 | case DW_FORM_string: | |
9b1c24c8 | 4461 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
4462 | info_ptr += bytes_read; |
4463 | break; | |
2dc7f7b3 | 4464 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
4465 | case DW_FORM_strp: |
4466 | info_ptr += cu->header.offset_size; | |
4467 | break; | |
2dc7f7b3 | 4468 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
4469 | case DW_FORM_block: |
4470 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4471 | info_ptr += bytes_read; | |
4472 | break; | |
4473 | case DW_FORM_block1: | |
4474 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
4475 | break; | |
4476 | case DW_FORM_block2: | |
4477 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
4478 | break; | |
4479 | case DW_FORM_block4: | |
4480 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
4481 | break; | |
4482 | case DW_FORM_sdata: | |
4483 | case DW_FORM_udata: | |
4484 | case DW_FORM_ref_udata: | |
4485 | info_ptr = skip_leb128 (abfd, info_ptr); | |
4486 | break; | |
4487 | case DW_FORM_indirect: | |
4488 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4489 | info_ptr += bytes_read; | |
4490 | /* We need to continue parsing from here, so just go back to | |
4491 | the top. */ | |
4492 | goto skip_attribute; | |
4493 | ||
4494 | default: | |
3e43a32a MS |
4495 | error (_("Dwarf Error: Cannot handle %s " |
4496 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
4497 | dwarf_form_name (form), |
4498 | bfd_get_filename (abfd)); | |
4499 | } | |
4500 | } | |
4501 | ||
4502 | if (abbrev->has_children) | |
93311388 | 4503 | return skip_children (buffer, info_ptr, cu); |
4bb7a0a7 DJ |
4504 | else |
4505 | return info_ptr; | |
4506 | } | |
4507 | ||
93311388 DE |
4508 | /* Locate ORIG_PDI's sibling. |
4509 | INFO_PTR should point to the start of the next DIE after ORIG_PDI | |
4510 | in BUFFER. */ | |
91c24f0a | 4511 | |
fe1b8b76 | 4512 | static gdb_byte * |
93311388 DE |
4513 | locate_pdi_sibling (struct partial_die_info *orig_pdi, |
4514 | gdb_byte *buffer, gdb_byte *info_ptr, | |
e7c27a73 | 4515 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
4516 | { |
4517 | /* Do we know the sibling already? */ | |
72bf9492 | 4518 | |
91c24f0a DC |
4519 | if (orig_pdi->sibling) |
4520 | return orig_pdi->sibling; | |
4521 | ||
4522 | /* Are there any children to deal with? */ | |
4523 | ||
4524 | if (!orig_pdi->has_children) | |
4525 | return info_ptr; | |
4526 | ||
4bb7a0a7 | 4527 | /* Skip the children the long way. */ |
91c24f0a | 4528 | |
93311388 | 4529 | return skip_children (buffer, info_ptr, cu); |
91c24f0a DC |
4530 | } |
4531 | ||
c906108c SS |
4532 | /* Expand this partial symbol table into a full symbol table. */ |
4533 | ||
4534 | static void | |
fba45db2 | 4535 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 4536 | { |
c906108c SS |
4537 | if (pst != NULL) |
4538 | { | |
4539 | if (pst->readin) | |
4540 | { | |
3e43a32a MS |
4541 | warning (_("bug: psymtab for %s is already read in."), |
4542 | pst->filename); | |
c906108c SS |
4543 | } |
4544 | else | |
4545 | { | |
4546 | if (info_verbose) | |
4547 | { | |
3e43a32a MS |
4548 | printf_filtered (_("Reading in symbols for %s..."), |
4549 | pst->filename); | |
c906108c SS |
4550 | gdb_flush (gdb_stdout); |
4551 | } | |
4552 | ||
10b3939b DJ |
4553 | /* Restore our global data. */ |
4554 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
4555 | dwarf2_objfile_data_key); | |
4556 | ||
b2ab525c KB |
4557 | /* If this psymtab is constructed from a debug-only objfile, the |
4558 | has_section_at_zero flag will not necessarily be correct. We | |
4559 | can get the correct value for this flag by looking at the data | |
4560 | associated with the (presumably stripped) associated objfile. */ | |
4561 | if (pst->objfile->separate_debug_objfile_backlink) | |
4562 | { | |
4563 | struct dwarf2_per_objfile *dpo_backlink | |
4564 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
4565 | dwarf2_objfile_data_key); | |
9a619af0 | 4566 | |
b2ab525c KB |
4567 | dwarf2_per_objfile->has_section_at_zero |
4568 | = dpo_backlink->has_section_at_zero; | |
4569 | } | |
4570 | ||
98bfdba5 PA |
4571 | dwarf2_per_objfile->reading_partial_symbols = 0; |
4572 | ||
c906108c SS |
4573 | psymtab_to_symtab_1 (pst); |
4574 | ||
4575 | /* Finish up the debug error message. */ | |
4576 | if (info_verbose) | |
a3f17187 | 4577 | printf_filtered (_("done.\n")); |
c906108c SS |
4578 | } |
4579 | } | |
4580 | } | |
9cdd5dbd DE |
4581 | \f |
4582 | /* Reading in full CUs. */ | |
c906108c | 4583 | |
10b3939b DJ |
4584 | /* Add PER_CU to the queue. */ |
4585 | ||
4586 | static void | |
a0f42c21 | 4587 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu) |
10b3939b DJ |
4588 | { |
4589 | struct dwarf2_queue_item *item; | |
4590 | ||
4591 | per_cu->queued = 1; | |
4592 | item = xmalloc (sizeof (*item)); | |
4593 | item->per_cu = per_cu; | |
4594 | item->next = NULL; | |
4595 | ||
4596 | if (dwarf2_queue == NULL) | |
4597 | dwarf2_queue = item; | |
4598 | else | |
4599 | dwarf2_queue_tail->next = item; | |
4600 | ||
4601 | dwarf2_queue_tail = item; | |
4602 | } | |
4603 | ||
4604 | /* Process the queue. */ | |
4605 | ||
4606 | static void | |
a0f42c21 | 4607 | process_queue (void) |
10b3939b DJ |
4608 | { |
4609 | struct dwarf2_queue_item *item, *next_item; | |
4610 | ||
03dd20cc DJ |
4611 | /* The queue starts out with one item, but following a DIE reference |
4612 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
4613 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
4614 | { | |
9291a0cd TT |
4615 | if (dwarf2_per_objfile->using_index |
4616 | ? !item->per_cu->v.quick->symtab | |
4617 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
10b3939b DJ |
4618 | process_full_comp_unit (item->per_cu); |
4619 | ||
4620 | item->per_cu->queued = 0; | |
4621 | next_item = item->next; | |
4622 | xfree (item); | |
4623 | } | |
4624 | ||
4625 | dwarf2_queue_tail = NULL; | |
4626 | } | |
4627 | ||
4628 | /* Free all allocated queue entries. This function only releases anything if | |
4629 | an error was thrown; if the queue was processed then it would have been | |
4630 | freed as we went along. */ | |
4631 | ||
4632 | static void | |
4633 | dwarf2_release_queue (void *dummy) | |
4634 | { | |
4635 | struct dwarf2_queue_item *item, *last; | |
4636 | ||
4637 | item = dwarf2_queue; | |
4638 | while (item) | |
4639 | { | |
4640 | /* Anything still marked queued is likely to be in an | |
4641 | inconsistent state, so discard it. */ | |
4642 | if (item->per_cu->queued) | |
4643 | { | |
4644 | if (item->per_cu->cu != NULL) | |
4645 | free_one_cached_comp_unit (item->per_cu->cu); | |
4646 | item->per_cu->queued = 0; | |
4647 | } | |
4648 | ||
4649 | last = item; | |
4650 | item = item->next; | |
4651 | xfree (last); | |
4652 | } | |
4653 | ||
4654 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
4655 | } | |
4656 | ||
4657 | /* Read in full symbols for PST, and anything it depends on. */ | |
4658 | ||
c906108c | 4659 | static void |
fba45db2 | 4660 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 4661 | { |
10b3939b | 4662 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 4663 | struct cleanup *back_to; |
aaa75496 JB |
4664 | int i; |
4665 | ||
4666 | for (i = 0; i < pst->number_of_dependencies; i++) | |
4667 | if (!pst->dependencies[i]->readin) | |
4668 | { | |
4669 | /* Inform about additional files that need to be read in. */ | |
4670 | if (info_verbose) | |
4671 | { | |
a3f17187 | 4672 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
4673 | fputs_filtered (" ", gdb_stdout); |
4674 | wrap_here (""); | |
4675 | fputs_filtered ("and ", gdb_stdout); | |
4676 | wrap_here (""); | |
4677 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 4678 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
4679 | gdb_flush (gdb_stdout); |
4680 | } | |
4681 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
4682 | } | |
4683 | ||
e38df1d0 | 4684 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
4685 | |
4686 | if (per_cu == NULL) | |
aaa75496 JB |
4687 | { |
4688 | /* It's an include file, no symbols to read for it. | |
4689 | Everything is in the parent symtab. */ | |
4690 | pst->readin = 1; | |
4691 | return; | |
4692 | } | |
c906108c | 4693 | |
a0f42c21 | 4694 | dw2_do_instantiate_symtab (per_cu); |
10b3939b DJ |
4695 | } |
4696 | ||
93311388 | 4697 | /* Load the DIEs associated with PER_CU into memory. */ |
10b3939b | 4698 | |
93311388 | 4699 | static void |
a0f42c21 | 4700 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu) |
10b3939b | 4701 | { |
a0f42c21 | 4702 | struct objfile *objfile = per_cu->objfile; |
31ffec48 | 4703 | bfd *abfd = objfile->obfd; |
10b3939b | 4704 | struct dwarf2_cu *cu; |
c764a876 | 4705 | unsigned int offset; |
93311388 | 4706 | gdb_byte *info_ptr, *beg_of_comp_unit; |
98bfdba5 | 4707 | struct cleanup *free_abbrevs_cleanup = NULL, *free_cu_cleanup = NULL; |
10b3939b | 4708 | struct attribute *attr; |
98bfdba5 | 4709 | int read_cu = 0; |
6502dd73 | 4710 | |
b0df02fd | 4711 | gdb_assert (! per_cu->debug_types_section); |
348e048f | 4712 | |
c906108c | 4713 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 4714 | offset = per_cu->offset; |
6502dd73 | 4715 | |
be391dca | 4716 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
dce234bc | 4717 | info_ptr = dwarf2_per_objfile->info.buffer + offset; |
93311388 | 4718 | beg_of_comp_unit = info_ptr; |
63d06c5c | 4719 | |
98bfdba5 PA |
4720 | if (per_cu->cu == NULL) |
4721 | { | |
9816fde3 JK |
4722 | cu = xmalloc (sizeof (*cu)); |
4723 | init_one_comp_unit (cu, objfile); | |
98bfdba5 PA |
4724 | |
4725 | read_cu = 1; | |
c906108c | 4726 | |
98bfdba5 | 4727 | /* If an error occurs while loading, release our storage. */ |
68dc6402 | 4728 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
c906108c | 4729 | |
98bfdba5 PA |
4730 | /* Read in the comp_unit header. */ |
4731 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); | |
c906108c | 4732 | |
6caca83c CC |
4733 | /* Skip dummy compilation units. */ |
4734 | if (info_ptr >= (dwarf2_per_objfile->info.buffer | |
4735 | + dwarf2_per_objfile->info.size) | |
4736 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
4737 | { | |
4738 | do_cleanups (free_cu_cleanup); | |
4739 | return; | |
4740 | } | |
4741 | ||
98bfdba5 PA |
4742 | /* Complete the cu_header. */ |
4743 | cu->header.offset = offset; | |
4744 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
93311388 | 4745 | |
98bfdba5 PA |
4746 | /* Read the abbrevs for this compilation unit. */ |
4747 | dwarf2_read_abbrevs (abfd, cu); | |
4748 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); | |
10b3939b | 4749 | |
98bfdba5 PA |
4750 | /* Link this compilation unit into the compilation unit tree. */ |
4751 | per_cu->cu = cu; | |
4752 | cu->per_cu = per_cu; | |
98bfdba5 PA |
4753 | |
4754 | /* Link this CU into read_in_chain. */ | |
4755 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4756 | dwarf2_per_objfile->read_in_chain = per_cu; | |
4757 | } | |
4758 | else | |
4759 | { | |
4760 | cu = per_cu->cu; | |
4761 | info_ptr += cu->header.first_die_offset; | |
4762 | } | |
e142c38c | 4763 | |
93311388 | 4764 | cu->dies = read_comp_unit (info_ptr, cu); |
10b3939b DJ |
4765 | |
4766 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 4767 | all CUs needed for references have been loaded yet, and symbol |
10b3939b DJ |
4768 | table processing isn't initialized. But we have to set the CU language, |
4769 | or we won't be able to build types correctly. */ | |
9816fde3 | 4770 | prepare_one_comp_unit (cu, cu->dies); |
10b3939b | 4771 | |
a6c727b2 DJ |
4772 | /* Similarly, if we do not read the producer, we can not apply |
4773 | producer-specific interpretation. */ | |
4774 | attr = dwarf2_attr (cu->dies, DW_AT_producer, cu); | |
4775 | if (attr) | |
4776 | cu->producer = DW_STRING (attr); | |
4777 | ||
98bfdba5 PA |
4778 | if (read_cu) |
4779 | { | |
4780 | do_cleanups (free_abbrevs_cleanup); | |
e142c38c | 4781 | |
98bfdba5 PA |
4782 | /* We've successfully allocated this compilation unit. Let our |
4783 | caller clean it up when finished with it. */ | |
4784 | discard_cleanups (free_cu_cleanup); | |
4785 | } | |
10b3939b DJ |
4786 | } |
4787 | ||
3da10d80 KS |
4788 | /* Add a DIE to the delayed physname list. */ |
4789 | ||
4790 | static void | |
4791 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
4792 | const char *name, struct die_info *die, | |
4793 | struct dwarf2_cu *cu) | |
4794 | { | |
4795 | struct delayed_method_info mi; | |
4796 | mi.type = type; | |
4797 | mi.fnfield_index = fnfield_index; | |
4798 | mi.index = index; | |
4799 | mi.name = name; | |
4800 | mi.die = die; | |
4801 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
4802 | } | |
4803 | ||
4804 | /* A cleanup for freeing the delayed method list. */ | |
4805 | ||
4806 | static void | |
4807 | free_delayed_list (void *ptr) | |
4808 | { | |
4809 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
4810 | if (cu->method_list != NULL) | |
4811 | { | |
4812 | VEC_free (delayed_method_info, cu->method_list); | |
4813 | cu->method_list = NULL; | |
4814 | } | |
4815 | } | |
4816 | ||
4817 | /* Compute the physnames of any methods on the CU's method list. | |
4818 | ||
4819 | The computation of method physnames is delayed in order to avoid the | |
4820 | (bad) condition that one of the method's formal parameters is of an as yet | |
4821 | incomplete type. */ | |
4822 | ||
4823 | static void | |
4824 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
4825 | { | |
4826 | int i; | |
4827 | struct delayed_method_info *mi; | |
4828 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
4829 | { | |
1d06ead6 | 4830 | const char *physname; |
3da10d80 KS |
4831 | struct fn_fieldlist *fn_flp |
4832 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
1d06ead6 | 4833 | physname = dwarf2_physname ((char *) mi->name, mi->die, cu); |
3da10d80 KS |
4834 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; |
4835 | } | |
4836 | } | |
4837 | ||
9cdd5dbd | 4838 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
4839 | already been loaded into memory. */ |
4840 | ||
4841 | static void | |
4842 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
4843 | { | |
10b3939b | 4844 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 4845 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
4846 | CORE_ADDR lowpc, highpc; |
4847 | struct symtab *symtab; | |
3da10d80 | 4848 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b DJ |
4849 | CORE_ADDR baseaddr; |
4850 | ||
4851 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
4852 | ||
10b3939b DJ |
4853 | buildsym_init (); |
4854 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 4855 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
4856 | |
4857 | cu->list_in_scope = &file_symbols; | |
c906108c SS |
4858 | |
4859 | /* Do line number decoding in read_file_scope () */ | |
10b3939b | 4860 | process_die (cu->dies, cu); |
c906108c | 4861 | |
3da10d80 KS |
4862 | /* Now that we have processed all the DIEs in the CU, all the types |
4863 | should be complete, and it should now be safe to compute all of the | |
4864 | physnames. */ | |
4865 | compute_delayed_physnames (cu); | |
4866 | do_cleanups (delayed_list_cleanup); | |
4867 | ||
fae299cd DC |
4868 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
4869 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
4870 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 4871 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 4872 | |
613e1657 | 4873 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c | 4874 | |
8be455d7 | 4875 | if (symtab != NULL) |
c906108c | 4876 | { |
df15bd07 | 4877 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 4878 | |
8be455d7 JK |
4879 | /* Set symtab language to language from DW_AT_language. If the |
4880 | compilation is from a C file generated by language preprocessors, do | |
4881 | not set the language if it was already deduced by start_subfile. */ | |
4882 | if (!(cu->language == language_c && symtab->language != language_c)) | |
4883 | symtab->language = cu->language; | |
4884 | ||
4885 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
4886 | produce DW_AT_location with location lists but it can be possibly | |
4887 | invalid without -fvar-tracking. | |
4888 | ||
4889 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
4890 | needed, it would be wrong due to missing DW_AT_producer there. | |
4891 | ||
4892 | Still one can confuse GDB by using non-standard GCC compilation | |
4893 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
4894 | */ | |
4632c0d0 | 4895 | if (cu->has_loclist && gcc_4_minor >= 0) |
8be455d7 | 4896 | symtab->locations_valid = 1; |
e0d00bc7 JK |
4897 | |
4898 | if (gcc_4_minor >= 5) | |
4899 | symtab->epilogue_unwind_valid = 1; | |
96408a79 SA |
4900 | |
4901 | symtab->call_site_htab = cu->call_site_htab; | |
c906108c | 4902 | } |
9291a0cd TT |
4903 | |
4904 | if (dwarf2_per_objfile->using_index) | |
4905 | per_cu->v.quick->symtab = symtab; | |
4906 | else | |
4907 | { | |
4908 | struct partial_symtab *pst = per_cu->v.psymtab; | |
4909 | pst->symtab = symtab; | |
4910 | pst->readin = 1; | |
4911 | } | |
c906108c SS |
4912 | |
4913 | do_cleanups (back_to); | |
4914 | } | |
4915 | ||
4916 | /* Process a die and its children. */ | |
4917 | ||
4918 | static void | |
e7c27a73 | 4919 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4920 | { |
4921 | switch (die->tag) | |
4922 | { | |
4923 | case DW_TAG_padding: | |
4924 | break; | |
4925 | case DW_TAG_compile_unit: | |
e7c27a73 | 4926 | read_file_scope (die, cu); |
c906108c | 4927 | break; |
348e048f DE |
4928 | case DW_TAG_type_unit: |
4929 | read_type_unit_scope (die, cu); | |
4930 | break; | |
c906108c | 4931 | case DW_TAG_subprogram: |
c906108c | 4932 | case DW_TAG_inlined_subroutine: |
edb3359d | 4933 | read_func_scope (die, cu); |
c906108c SS |
4934 | break; |
4935 | case DW_TAG_lexical_block: | |
14898363 L |
4936 | case DW_TAG_try_block: |
4937 | case DW_TAG_catch_block: | |
e7c27a73 | 4938 | read_lexical_block_scope (die, cu); |
c906108c | 4939 | break; |
96408a79 SA |
4940 | case DW_TAG_GNU_call_site: |
4941 | read_call_site_scope (die, cu); | |
4942 | break; | |
c906108c | 4943 | case DW_TAG_class_type: |
680b30c7 | 4944 | case DW_TAG_interface_type: |
c906108c SS |
4945 | case DW_TAG_structure_type: |
4946 | case DW_TAG_union_type: | |
134d01f1 | 4947 | process_structure_scope (die, cu); |
c906108c SS |
4948 | break; |
4949 | case DW_TAG_enumeration_type: | |
134d01f1 | 4950 | process_enumeration_scope (die, cu); |
c906108c | 4951 | break; |
134d01f1 | 4952 | |
f792889a DJ |
4953 | /* These dies have a type, but processing them does not create |
4954 | a symbol or recurse to process the children. Therefore we can | |
4955 | read them on-demand through read_type_die. */ | |
c906108c | 4956 | case DW_TAG_subroutine_type: |
72019c9c | 4957 | case DW_TAG_set_type: |
c906108c | 4958 | case DW_TAG_array_type: |
c906108c | 4959 | case DW_TAG_pointer_type: |
c906108c | 4960 | case DW_TAG_ptr_to_member_type: |
c906108c | 4961 | case DW_TAG_reference_type: |
c906108c | 4962 | case DW_TAG_string_type: |
c906108c | 4963 | break; |
134d01f1 | 4964 | |
c906108c | 4965 | case DW_TAG_base_type: |
a02abb62 | 4966 | case DW_TAG_subrange_type: |
cb249c71 | 4967 | case DW_TAG_typedef: |
134d01f1 DJ |
4968 | /* Add a typedef symbol for the type definition, if it has a |
4969 | DW_AT_name. */ | |
f792889a | 4970 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 4971 | break; |
c906108c | 4972 | case DW_TAG_common_block: |
e7c27a73 | 4973 | read_common_block (die, cu); |
c906108c SS |
4974 | break; |
4975 | case DW_TAG_common_inclusion: | |
4976 | break; | |
d9fa45fe | 4977 | case DW_TAG_namespace: |
63d06c5c | 4978 | processing_has_namespace_info = 1; |
e7c27a73 | 4979 | read_namespace (die, cu); |
d9fa45fe | 4980 | break; |
5d7cb8df | 4981 | case DW_TAG_module: |
f55ee35c | 4982 | processing_has_namespace_info = 1; |
5d7cb8df JK |
4983 | read_module (die, cu); |
4984 | break; | |
d9fa45fe DC |
4985 | case DW_TAG_imported_declaration: |
4986 | case DW_TAG_imported_module: | |
63d06c5c | 4987 | processing_has_namespace_info = 1; |
27aa8d6a SW |
4988 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
4989 | || cu->language != language_fortran)) | |
4990 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
4991 | dwarf_tag_name (die->tag)); | |
4992 | read_import_statement (die, cu); | |
d9fa45fe | 4993 | break; |
c906108c | 4994 | default: |
e7c27a73 | 4995 | new_symbol (die, NULL, cu); |
c906108c SS |
4996 | break; |
4997 | } | |
4998 | } | |
4999 | ||
94af9270 KS |
5000 | /* A helper function for dwarf2_compute_name which determines whether DIE |
5001 | needs to have the name of the scope prepended to the name listed in the | |
5002 | die. */ | |
5003 | ||
5004 | static int | |
5005 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
5006 | { | |
1c809c68 TT |
5007 | struct attribute *attr; |
5008 | ||
94af9270 KS |
5009 | switch (die->tag) |
5010 | { | |
5011 | case DW_TAG_namespace: | |
5012 | case DW_TAG_typedef: | |
5013 | case DW_TAG_class_type: | |
5014 | case DW_TAG_interface_type: | |
5015 | case DW_TAG_structure_type: | |
5016 | case DW_TAG_union_type: | |
5017 | case DW_TAG_enumeration_type: | |
5018 | case DW_TAG_enumerator: | |
5019 | case DW_TAG_subprogram: | |
5020 | case DW_TAG_member: | |
5021 | return 1; | |
5022 | ||
5023 | case DW_TAG_variable: | |
c2b0a229 | 5024 | case DW_TAG_constant: |
94af9270 KS |
5025 | /* We only need to prefix "globally" visible variables. These include |
5026 | any variable marked with DW_AT_external or any variable that | |
5027 | lives in a namespace. [Variables in anonymous namespaces | |
5028 | require prefixing, but they are not DW_AT_external.] */ | |
5029 | ||
5030 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
5031 | { | |
5032 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 5033 | |
94af9270 KS |
5034 | return die_needs_namespace (die_specification (die, &spec_cu), |
5035 | spec_cu); | |
5036 | } | |
5037 | ||
1c809c68 | 5038 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
5039 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
5040 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
5041 | return 0; |
5042 | /* A variable in a lexical block of some kind does not need a | |
5043 | namespace, even though in C++ such variables may be external | |
5044 | and have a mangled name. */ | |
5045 | if (die->parent->tag == DW_TAG_lexical_block | |
5046 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
5047 | || die->parent->tag == DW_TAG_catch_block |
5048 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
5049 | return 0; |
5050 | return 1; | |
94af9270 KS |
5051 | |
5052 | default: | |
5053 | return 0; | |
5054 | } | |
5055 | } | |
5056 | ||
98bfdba5 PA |
5057 | /* Retrieve the last character from a mem_file. */ |
5058 | ||
5059 | static void | |
5060 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
5061 | { | |
5062 | char *last_char_p = (char *) object; | |
5063 | ||
5064 | if (length > 0) | |
5065 | *last_char_p = buffer[length - 1]; | |
5066 | } | |
5067 | ||
94af9270 KS |
5068 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
5069 | compute the physname for the object, which include a method's | |
5070 | formal parameters (C++/Java) and return type (Java). | |
5071 | ||
af6b7be1 JB |
5072 | For Ada, return the DIE's linkage name rather than the fully qualified |
5073 | name. PHYSNAME is ignored.. | |
5074 | ||
94af9270 KS |
5075 | The result is allocated on the objfile_obstack and canonicalized. */ |
5076 | ||
5077 | static const char * | |
5078 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
5079 | int physname) | |
5080 | { | |
bb5ed363 DE |
5081 | struct objfile *objfile = cu->objfile; |
5082 | ||
94af9270 KS |
5083 | if (name == NULL) |
5084 | name = dwarf2_name (die, cu); | |
5085 | ||
f55ee35c JK |
5086 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
5087 | compute it by typename_concat inside GDB. */ | |
5088 | if (cu->language == language_ada | |
5089 | || (cu->language == language_fortran && physname)) | |
5090 | { | |
5091 | /* For Ada unit, we prefer the linkage name over the name, as | |
5092 | the former contains the exported name, which the user expects | |
5093 | to be able to reference. Ideally, we want the user to be able | |
5094 | to reference this entity using either natural or linkage name, | |
5095 | but we haven't started looking at this enhancement yet. */ | |
5096 | struct attribute *attr; | |
5097 | ||
5098 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
5099 | if (attr == NULL) | |
5100 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
5101 | if (attr && DW_STRING (attr)) | |
5102 | return DW_STRING (attr); | |
5103 | } | |
5104 | ||
94af9270 KS |
5105 | /* These are the only languages we know how to qualify names in. */ |
5106 | if (name != NULL | |
f55ee35c JK |
5107 | && (cu->language == language_cplus || cu->language == language_java |
5108 | || cu->language == language_fortran)) | |
94af9270 KS |
5109 | { |
5110 | if (die_needs_namespace (die, cu)) | |
5111 | { | |
5112 | long length; | |
5113 | char *prefix; | |
5114 | struct ui_file *buf; | |
5115 | ||
5116 | prefix = determine_prefix (die, cu); | |
5117 | buf = mem_fileopen (); | |
5118 | if (*prefix != '\0') | |
5119 | { | |
f55ee35c JK |
5120 | char *prefixed_name = typename_concat (NULL, prefix, name, |
5121 | physname, cu); | |
9a619af0 | 5122 | |
94af9270 KS |
5123 | fputs_unfiltered (prefixed_name, buf); |
5124 | xfree (prefixed_name); | |
5125 | } | |
5126 | else | |
62d5b8da | 5127 | fputs_unfiltered (name, buf); |
94af9270 | 5128 | |
98bfdba5 PA |
5129 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
5130 | as children with DW_TAG_template_type_param or | |
5131 | DW_TAG_value_type_param. If the latter, add them to the name | |
5132 | here. If the name already has template parameters, then | |
5133 | skip this step; some versions of GCC emit both, and | |
5134 | it is more efficient to use the pre-computed name. | |
5135 | ||
5136 | Something to keep in mind about this process: it is very | |
5137 | unlikely, or in some cases downright impossible, to produce | |
5138 | something that will match the mangled name of a function. | |
5139 | If the definition of the function has the same debug info, | |
5140 | we should be able to match up with it anyway. But fallbacks | |
5141 | using the minimal symbol, for instance to find a method | |
5142 | implemented in a stripped copy of libstdc++, will not work. | |
5143 | If we do not have debug info for the definition, we will have to | |
5144 | match them up some other way. | |
5145 | ||
5146 | When we do name matching there is a related problem with function | |
5147 | templates; two instantiated function templates are allowed to | |
5148 | differ only by their return types, which we do not add here. */ | |
5149 | ||
5150 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
5151 | { | |
5152 | struct attribute *attr; | |
5153 | struct die_info *child; | |
5154 | int first = 1; | |
5155 | ||
5156 | die->building_fullname = 1; | |
5157 | ||
5158 | for (child = die->child; child != NULL; child = child->sibling) | |
5159 | { | |
5160 | struct type *type; | |
5161 | long value; | |
5162 | gdb_byte *bytes; | |
5163 | struct dwarf2_locexpr_baton *baton; | |
5164 | struct value *v; | |
5165 | ||
5166 | if (child->tag != DW_TAG_template_type_param | |
5167 | && child->tag != DW_TAG_template_value_param) | |
5168 | continue; | |
5169 | ||
5170 | if (first) | |
5171 | { | |
5172 | fputs_unfiltered ("<", buf); | |
5173 | first = 0; | |
5174 | } | |
5175 | else | |
5176 | fputs_unfiltered (", ", buf); | |
5177 | ||
5178 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
5179 | if (attr == NULL) | |
5180 | { | |
5181 | complaint (&symfile_complaints, | |
5182 | _("template parameter missing DW_AT_type")); | |
5183 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
5184 | continue; | |
5185 | } | |
5186 | type = die_type (child, cu); | |
5187 | ||
5188 | if (child->tag == DW_TAG_template_type_param) | |
5189 | { | |
5190 | c_print_type (type, "", buf, -1, 0); | |
5191 | continue; | |
5192 | } | |
5193 | ||
5194 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
5195 | if (attr == NULL) | |
5196 | { | |
5197 | complaint (&symfile_complaints, | |
3e43a32a MS |
5198 | _("template parameter missing " |
5199 | "DW_AT_const_value")); | |
98bfdba5 PA |
5200 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
5201 | continue; | |
5202 | } | |
5203 | ||
5204 | dwarf2_const_value_attr (attr, type, name, | |
5205 | &cu->comp_unit_obstack, cu, | |
5206 | &value, &bytes, &baton); | |
5207 | ||
5208 | if (TYPE_NOSIGN (type)) | |
5209 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
5210 | changed, this can use value_print instead. */ | |
5211 | c_printchar (value, type, buf); | |
5212 | else | |
5213 | { | |
5214 | struct value_print_options opts; | |
5215 | ||
5216 | if (baton != NULL) | |
5217 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
5218 | baton->data, | |
5219 | baton->size, | |
5220 | baton->per_cu); | |
5221 | else if (bytes != NULL) | |
5222 | { | |
5223 | v = allocate_value (type); | |
5224 | memcpy (value_contents_writeable (v), bytes, | |
5225 | TYPE_LENGTH (type)); | |
5226 | } | |
5227 | else | |
5228 | v = value_from_longest (type, value); | |
5229 | ||
3e43a32a MS |
5230 | /* Specify decimal so that we do not depend on |
5231 | the radix. */ | |
98bfdba5 PA |
5232 | get_formatted_print_options (&opts, 'd'); |
5233 | opts.raw = 1; | |
5234 | value_print (v, buf, &opts); | |
5235 | release_value (v); | |
5236 | value_free (v); | |
5237 | } | |
5238 | } | |
5239 | ||
5240 | die->building_fullname = 0; | |
5241 | ||
5242 | if (!first) | |
5243 | { | |
5244 | /* Close the argument list, with a space if necessary | |
5245 | (nested templates). */ | |
5246 | char last_char = '\0'; | |
5247 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
5248 | if (last_char == '>') | |
5249 | fputs_unfiltered (" >", buf); | |
5250 | else | |
5251 | fputs_unfiltered (">", buf); | |
5252 | } | |
5253 | } | |
5254 | ||
94af9270 KS |
5255 | /* For Java and C++ methods, append formal parameter type |
5256 | information, if PHYSNAME. */ | |
6e70227d | 5257 | |
94af9270 KS |
5258 | if (physname && die->tag == DW_TAG_subprogram |
5259 | && (cu->language == language_cplus | |
5260 | || cu->language == language_java)) | |
5261 | { | |
5262 | struct type *type = read_type_die (die, cu); | |
5263 | ||
3167638f | 5264 | c_type_print_args (type, buf, 1, cu->language); |
94af9270 KS |
5265 | |
5266 | if (cu->language == language_java) | |
5267 | { | |
5268 | /* For java, we must append the return type to method | |
0963b4bd | 5269 | names. */ |
94af9270 KS |
5270 | if (die->tag == DW_TAG_subprogram) |
5271 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
5272 | 0, 0); | |
5273 | } | |
5274 | else if (cu->language == language_cplus) | |
5275 | { | |
60430eff DJ |
5276 | /* Assume that an artificial first parameter is |
5277 | "this", but do not crash if it is not. RealView | |
5278 | marks unnamed (and thus unused) parameters as | |
5279 | artificial; there is no way to differentiate | |
5280 | the two cases. */ | |
94af9270 KS |
5281 | if (TYPE_NFIELDS (type) > 0 |
5282 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 5283 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
5284 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
5285 | 0)))) | |
94af9270 KS |
5286 | fputs_unfiltered (" const", buf); |
5287 | } | |
5288 | } | |
5289 | ||
bb5ed363 | 5290 | name = ui_file_obsavestring (buf, &objfile->objfile_obstack, |
94af9270 KS |
5291 | &length); |
5292 | ui_file_delete (buf); | |
5293 | ||
5294 | if (cu->language == language_cplus) | |
5295 | { | |
5296 | char *cname | |
5297 | = dwarf2_canonicalize_name (name, cu, | |
bb5ed363 | 5298 | &objfile->objfile_obstack); |
9a619af0 | 5299 | |
94af9270 KS |
5300 | if (cname != NULL) |
5301 | name = cname; | |
5302 | } | |
5303 | } | |
5304 | } | |
5305 | ||
5306 | return name; | |
5307 | } | |
5308 | ||
0114d602 DJ |
5309 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
5310 | If scope qualifiers are appropriate they will be added. The result | |
5311 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
5312 | not have a name. NAME may either be from a previous call to |
5313 | dwarf2_name or NULL. | |
5314 | ||
0963b4bd | 5315 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
5316 | |
5317 | static const char * | |
94af9270 | 5318 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 5319 | { |
94af9270 KS |
5320 | return dwarf2_compute_name (name, die, cu, 0); |
5321 | } | |
0114d602 | 5322 | |
94af9270 KS |
5323 | /* Construct a physname for the given DIE in CU. NAME may either be |
5324 | from a previous call to dwarf2_name or NULL. The result will be | |
5325 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
5326 | name. | |
0114d602 | 5327 | |
94af9270 | 5328 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 5329 | |
94af9270 KS |
5330 | static const char * |
5331 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
5332 | { | |
bb5ed363 | 5333 | struct objfile *objfile = cu->objfile; |
900e11f9 JK |
5334 | struct attribute *attr; |
5335 | const char *retval, *mangled = NULL, *canon = NULL; | |
5336 | struct cleanup *back_to; | |
5337 | int need_copy = 1; | |
5338 | ||
5339 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
5340 | on its own. */ | |
5341 | if (!die_needs_namespace (die, cu)) | |
5342 | return dwarf2_compute_name (name, die, cu, 1); | |
5343 | ||
5344 | back_to = make_cleanup (null_cleanup, NULL); | |
5345 | ||
5346 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
5347 | if (!attr) | |
5348 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
5349 | ||
5350 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB | |
5351 | has computed. */ | |
5352 | if (attr && DW_STRING (attr)) | |
5353 | { | |
5354 | char *demangled; | |
5355 | ||
5356 | mangled = DW_STRING (attr); | |
5357 | ||
5358 | /* Use DMGL_RET_DROP for C++ template functions to suppress their return | |
5359 | type. It is easier for GDB users to search for such functions as | |
5360 | `name(params)' than `long name(params)'. In such case the minimal | |
5361 | symbol names do not match the full symbol names but for template | |
5362 | functions there is never a need to look up their definition from their | |
5363 | declaration so the only disadvantage remains the minimal symbol | |
5364 | variant `long name(params)' does not have the proper inferior type. | |
5365 | */ | |
5366 | ||
5367 | demangled = cplus_demangle (mangled, (DMGL_PARAMS | DMGL_ANSI | |
5368 | | (cu->language == language_java | |
5369 | ? DMGL_JAVA | DMGL_RET_POSTFIX | |
5370 | : DMGL_RET_DROP))); | |
5371 | if (demangled) | |
5372 | { | |
5373 | make_cleanup (xfree, demangled); | |
5374 | canon = demangled; | |
5375 | } | |
5376 | else | |
5377 | { | |
5378 | canon = mangled; | |
5379 | need_copy = 0; | |
5380 | } | |
5381 | } | |
5382 | ||
5383 | if (canon == NULL || check_physname) | |
5384 | { | |
5385 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
5386 | ||
5387 | if (canon != NULL && strcmp (physname, canon) != 0) | |
5388 | { | |
5389 | /* It may not mean a bug in GDB. The compiler could also | |
5390 | compute DW_AT_linkage_name incorrectly. But in such case | |
5391 | GDB would need to be bug-to-bug compatible. */ | |
5392 | ||
5393 | complaint (&symfile_complaints, | |
5394 | _("Computed physname <%s> does not match demangled <%s> " | |
5395 | "(from linkage <%s>) - DIE at 0x%x [in module %s]"), | |
bb5ed363 | 5396 | physname, canon, mangled, die->offset, objfile->name); |
900e11f9 JK |
5397 | |
5398 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
5399 | is available here - over computed PHYSNAME. It is safer | |
5400 | against both buggy GDB and buggy compilers. */ | |
5401 | ||
5402 | retval = canon; | |
5403 | } | |
5404 | else | |
5405 | { | |
5406 | retval = physname; | |
5407 | need_copy = 0; | |
5408 | } | |
5409 | } | |
5410 | else | |
5411 | retval = canon; | |
5412 | ||
5413 | if (need_copy) | |
5414 | retval = obsavestring (retval, strlen (retval), | |
bb5ed363 | 5415 | &objfile->objfile_obstack); |
900e11f9 JK |
5416 | |
5417 | do_cleanups (back_to); | |
5418 | return retval; | |
0114d602 DJ |
5419 | } |
5420 | ||
27aa8d6a SW |
5421 | /* Read the import statement specified by the given die and record it. */ |
5422 | ||
5423 | static void | |
5424 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
5425 | { | |
bb5ed363 | 5426 | struct objfile *objfile = cu->objfile; |
27aa8d6a | 5427 | struct attribute *import_attr; |
32019081 | 5428 | struct die_info *imported_die, *child_die; |
de4affc9 | 5429 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 5430 | const char *imported_name; |
794684b6 | 5431 | const char *imported_name_prefix; |
13387711 SW |
5432 | const char *canonical_name; |
5433 | const char *import_alias; | |
5434 | const char *imported_declaration = NULL; | |
794684b6 | 5435 | const char *import_prefix; |
32019081 JK |
5436 | VEC (const_char_ptr) *excludes = NULL; |
5437 | struct cleanup *cleanups; | |
13387711 SW |
5438 | |
5439 | char *temp; | |
27aa8d6a SW |
5440 | |
5441 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
5442 | if (import_attr == NULL) | |
5443 | { | |
5444 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
5445 | dwarf_tag_name (die->tag)); | |
5446 | return; | |
5447 | } | |
5448 | ||
de4affc9 CC |
5449 | imported_cu = cu; |
5450 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
5451 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
5452 | if (imported_name == NULL) |
5453 | { | |
5454 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
5455 | ||
5456 | The import in the following code: | |
5457 | namespace A | |
5458 | { | |
5459 | typedef int B; | |
5460 | } | |
5461 | ||
5462 | int main () | |
5463 | { | |
5464 | using A::B; | |
5465 | B b; | |
5466 | return b; | |
5467 | } | |
5468 | ||
5469 | ... | |
5470 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
5471 | <52> DW_AT_decl_file : 1 | |
5472 | <53> DW_AT_decl_line : 6 | |
5473 | <54> DW_AT_import : <0x75> | |
5474 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
5475 | <59> DW_AT_name : B | |
5476 | <5b> DW_AT_decl_file : 1 | |
5477 | <5c> DW_AT_decl_line : 2 | |
5478 | <5d> DW_AT_type : <0x6e> | |
5479 | ... | |
5480 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
5481 | <76> DW_AT_byte_size : 4 | |
5482 | <77> DW_AT_encoding : 5 (signed) | |
5483 | ||
5484 | imports the wrong die ( 0x75 instead of 0x58 ). | |
5485 | This case will be ignored until the gcc bug is fixed. */ | |
5486 | return; | |
5487 | } | |
5488 | ||
82856980 SW |
5489 | /* Figure out the local name after import. */ |
5490 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 5491 | |
794684b6 SW |
5492 | /* Figure out where the statement is being imported to. */ |
5493 | import_prefix = determine_prefix (die, cu); | |
5494 | ||
5495 | /* Figure out what the scope of the imported die is and prepend it | |
5496 | to the name of the imported die. */ | |
de4affc9 | 5497 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 5498 | |
f55ee35c JK |
5499 | if (imported_die->tag != DW_TAG_namespace |
5500 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 5501 | { |
13387711 SW |
5502 | imported_declaration = imported_name; |
5503 | canonical_name = imported_name_prefix; | |
794684b6 | 5504 | } |
13387711 | 5505 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 5506 | { |
13387711 SW |
5507 | temp = alloca (strlen (imported_name_prefix) |
5508 | + 2 + strlen (imported_name) + 1); | |
5509 | strcpy (temp, imported_name_prefix); | |
5510 | strcat (temp, "::"); | |
5511 | strcat (temp, imported_name); | |
5512 | canonical_name = temp; | |
794684b6 | 5513 | } |
13387711 SW |
5514 | else |
5515 | canonical_name = imported_name; | |
794684b6 | 5516 | |
32019081 JK |
5517 | cleanups = make_cleanup (VEC_cleanup (const_char_ptr), &excludes); |
5518 | ||
5519 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) | |
5520 | for (child_die = die->child; child_die && child_die->tag; | |
5521 | child_die = sibling_die (child_die)) | |
5522 | { | |
5523 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
5524 | represented by an imported module entry with an import attribute | |
5525 | referring to the module and owned entries corresponding to those | |
5526 | entities that are renamed as part of being imported. */ | |
5527 | ||
5528 | if (child_die->tag != DW_TAG_imported_declaration) | |
5529 | { | |
5530 | complaint (&symfile_complaints, | |
5531 | _("child DW_TAG_imported_declaration expected " | |
5532 | "- DIE at 0x%x [in module %s]"), | |
bb5ed363 | 5533 | child_die->offset, objfile->name); |
32019081 JK |
5534 | continue; |
5535 | } | |
5536 | ||
5537 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
5538 | if (import_attr == NULL) | |
5539 | { | |
5540 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
5541 | dwarf_tag_name (child_die->tag)); | |
5542 | continue; | |
5543 | } | |
5544 | ||
5545 | imported_cu = cu; | |
5546 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
5547 | &imported_cu); | |
5548 | imported_name = dwarf2_name (imported_die, imported_cu); | |
5549 | if (imported_name == NULL) | |
5550 | { | |
5551 | complaint (&symfile_complaints, | |
5552 | _("child DW_TAG_imported_declaration has unknown " | |
5553 | "imported name - DIE at 0x%x [in module %s]"), | |
bb5ed363 | 5554 | child_die->offset, objfile->name); |
32019081 JK |
5555 | continue; |
5556 | } | |
5557 | ||
5558 | VEC_safe_push (const_char_ptr, excludes, imported_name); | |
5559 | ||
5560 | process_die (child_die, cu); | |
5561 | } | |
5562 | ||
c0cc3a76 SW |
5563 | cp_add_using_directive (import_prefix, |
5564 | canonical_name, | |
5565 | import_alias, | |
13387711 | 5566 | imported_declaration, |
32019081 | 5567 | excludes, |
bb5ed363 | 5568 | &objfile->objfile_obstack); |
32019081 JK |
5569 | |
5570 | do_cleanups (cleanups); | |
27aa8d6a SW |
5571 | } |
5572 | ||
ae2de4f8 DE |
5573 | /* Cleanup function for read_file_scope. */ |
5574 | ||
cb1df416 DJ |
5575 | static void |
5576 | free_cu_line_header (void *arg) | |
5577 | { | |
5578 | struct dwarf2_cu *cu = arg; | |
5579 | ||
5580 | free_line_header (cu->line_header); | |
5581 | cu->line_header = NULL; | |
5582 | } | |
5583 | ||
9291a0cd TT |
5584 | static void |
5585 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
5586 | char **name, char **comp_dir) | |
5587 | { | |
5588 | struct attribute *attr; | |
5589 | ||
5590 | *name = NULL; | |
5591 | *comp_dir = NULL; | |
5592 | ||
5593 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5594 | is not a source language identifier. */ | |
5595 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5596 | if (attr) | |
5597 | { | |
5598 | *name = DW_STRING (attr); | |
5599 | } | |
5600 | ||
5601 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5602 | if (attr) | |
5603 | *comp_dir = DW_STRING (attr); | |
5604 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
5605 | { | |
5606 | *comp_dir = ldirname (*name); | |
5607 | if (*comp_dir != NULL) | |
5608 | make_cleanup (xfree, *comp_dir); | |
5609 | } | |
5610 | if (*comp_dir != NULL) | |
5611 | { | |
5612 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
5613 | directory, get rid of it. */ | |
5614 | char *cp = strchr (*comp_dir, ':'); | |
5615 | ||
5616 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
5617 | *comp_dir = cp + 1; | |
5618 | } | |
5619 | ||
5620 | if (*name == NULL) | |
5621 | *name = "<unknown>"; | |
5622 | } | |
5623 | ||
2ab95328 TT |
5624 | /* Handle DW_AT_stmt_list for a compilation unit. */ |
5625 | ||
5626 | static void | |
5627 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
5628 | const char *comp_dir) | |
5629 | { | |
5630 | struct attribute *attr; | |
5631 | struct objfile *objfile = cu->objfile; | |
5632 | bfd *abfd = objfile->obfd; | |
5633 | ||
5634 | /* Decode line number information if present. We do this before | |
5635 | processing child DIEs, so that the line header table is available | |
5636 | for DW_AT_decl_file. */ | |
5637 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); | |
5638 | if (attr) | |
5639 | { | |
5640 | unsigned int line_offset = DW_UNSND (attr); | |
5641 | struct line_header *line_header | |
5642 | = dwarf_decode_line_header (line_offset, abfd, cu); | |
5643 | ||
5644 | if (line_header) | |
5645 | { | |
5646 | cu->line_header = line_header; | |
5647 | make_cleanup (free_cu_line_header, cu); | |
5648 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); | |
5649 | } | |
5650 | } | |
5651 | } | |
5652 | ||
ae2de4f8 DE |
5653 | /* Process DW_TAG_compile_unit. */ |
5654 | ||
c906108c | 5655 | static void |
e7c27a73 | 5656 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5657 | { |
e7c27a73 | 5658 | struct objfile *objfile = cu->objfile; |
debd256d | 5659 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 5660 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
5661 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
5662 | struct attribute *attr; | |
e1024ff1 | 5663 | char *name = NULL; |
c906108c SS |
5664 | char *comp_dir = NULL; |
5665 | struct die_info *child_die; | |
5666 | bfd *abfd = objfile->obfd; | |
e142c38c | 5667 | CORE_ADDR baseaddr; |
6e70227d | 5668 | |
e142c38c | 5669 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 5670 | |
fae299cd | 5671 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
5672 | |
5673 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
5674 | from finish_block. */ | |
2acceee2 | 5675 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
5676 | lowpc = highpc; |
5677 | lowpc += baseaddr; | |
5678 | highpc += baseaddr; | |
5679 | ||
9291a0cd | 5680 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 5681 | |
e142c38c | 5682 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
5683 | if (attr) |
5684 | { | |
e142c38c | 5685 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
5686 | } |
5687 | ||
b0f35d58 | 5688 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
6e70227d | 5689 | if (attr) |
b0f35d58 | 5690 | cu->producer = DW_STRING (attr); |
303b6f5d | 5691 | |
f4b8a18d KW |
5692 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
5693 | standardised yet. As a workaround for the language detection we fall | |
5694 | back to the DW_AT_producer string. */ | |
5695 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
5696 | cu->language = language_opencl; | |
5697 | ||
0963b4bd | 5698 | /* We assume that we're processing GCC output. */ |
c906108c | 5699 | processing_gcc_compilation = 2; |
c906108c | 5700 | |
df8a16a1 DJ |
5701 | processing_has_namespace_info = 0; |
5702 | ||
c906108c SS |
5703 | start_symtab (name, comp_dir, lowpc); |
5704 | record_debugformat ("DWARF 2"); | |
303b6f5d | 5705 | record_producer (cu->producer); |
c906108c | 5706 | |
2ab95328 | 5707 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
debd256d | 5708 | |
cb1df416 DJ |
5709 | /* Process all dies in compilation unit. */ |
5710 | if (die->child != NULL) | |
5711 | { | |
5712 | child_die = die->child; | |
5713 | while (child_die && child_die->tag) | |
5714 | { | |
5715 | process_die (child_die, cu); | |
5716 | child_die = sibling_die (child_die); | |
5717 | } | |
5718 | } | |
5719 | ||
2e276125 JB |
5720 | /* Decode macro information, if present. Dwarf 2 macro information |
5721 | refers to information in the line number info statement program | |
5722 | header, so we can only read it if we've read the header | |
5723 | successfully. */ | |
cf2c3c16 | 5724 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); |
2ab95328 | 5725 | if (attr && cu->line_header) |
2e276125 | 5726 | { |
cf2c3c16 TT |
5727 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) |
5728 | complaint (&symfile_complaints, | |
5729 | _("CU refers to both DW_AT_GNU_macros and DW_AT_macro_info")); | |
5730 | ||
5731 | dwarf_decode_macros (cu->line_header, DW_UNSND (attr), | |
5732 | comp_dir, abfd, cu, | |
5733 | &dwarf2_per_objfile->macro, 1); | |
5734 | } | |
5735 | else | |
5736 | { | |
5737 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
5738 | if (attr && cu->line_header) | |
5739 | { | |
5740 | unsigned int macro_offset = DW_UNSND (attr); | |
9a619af0 | 5741 | |
cf2c3c16 TT |
5742 | dwarf_decode_macros (cu->line_header, macro_offset, |
5743 | comp_dir, abfd, cu, | |
5744 | &dwarf2_per_objfile->macinfo, 0); | |
5745 | } | |
2e276125 | 5746 | } |
9cdd5dbd | 5747 | |
debd256d | 5748 | do_cleanups (back_to); |
5fb290d7 DJ |
5749 | } |
5750 | ||
ae2de4f8 DE |
5751 | /* Process DW_TAG_type_unit. |
5752 | For TUs we want to skip the first top level sibling if it's not the | |
348e048f DE |
5753 | actual type being defined by this TU. In this case the first top |
5754 | level sibling is there to provide context only. */ | |
5755 | ||
5756 | static void | |
5757 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
5758 | { | |
5759 | struct objfile *objfile = cu->objfile; | |
5760 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
5761 | CORE_ADDR lowpc; | |
5762 | struct attribute *attr; | |
5763 | char *name = NULL; | |
5764 | char *comp_dir = NULL; | |
5765 | struct die_info *child_die; | |
5766 | bfd *abfd = objfile->obfd; | |
348e048f DE |
5767 | |
5768 | /* start_symtab needs a low pc, but we don't really have one. | |
5769 | Do what read_file_scope would do in the absence of such info. */ | |
5770 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5771 | ||
5772 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5773 | is not a source language identifier. */ | |
5774 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5775 | if (attr) | |
5776 | name = DW_STRING (attr); | |
5777 | ||
5778 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5779 | if (attr) | |
5780 | comp_dir = DW_STRING (attr); | |
5781 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
5782 | { | |
5783 | comp_dir = ldirname (name); | |
5784 | if (comp_dir != NULL) | |
5785 | make_cleanup (xfree, comp_dir); | |
5786 | } | |
5787 | ||
5788 | if (name == NULL) | |
5789 | name = "<unknown>"; | |
5790 | ||
5791 | attr = dwarf2_attr (die, DW_AT_language, cu); | |
5792 | if (attr) | |
5793 | set_cu_language (DW_UNSND (attr), cu); | |
5794 | ||
5795 | /* This isn't technically needed today. It is done for symmetry | |
5796 | with read_file_scope. */ | |
5797 | attr = dwarf2_attr (die, DW_AT_producer, cu); | |
6e70227d | 5798 | if (attr) |
348e048f DE |
5799 | cu->producer = DW_STRING (attr); |
5800 | ||
0963b4bd | 5801 | /* We assume that we're processing GCC output. */ |
348e048f DE |
5802 | processing_gcc_compilation = 2; |
5803 | ||
5804 | processing_has_namespace_info = 0; | |
5805 | ||
5806 | start_symtab (name, comp_dir, lowpc); | |
5807 | record_debugformat ("DWARF 2"); | |
5808 | record_producer (cu->producer); | |
5809 | ||
2ab95328 TT |
5810 | handle_DW_AT_stmt_list (die, cu, comp_dir); |
5811 | ||
348e048f DE |
5812 | /* Process the dies in the type unit. */ |
5813 | if (die->child == NULL) | |
5814 | { | |
5815 | dump_die_for_error (die); | |
5816 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
5817 | bfd_get_filename (abfd)); | |
5818 | } | |
5819 | ||
5820 | child_die = die->child; | |
5821 | ||
5822 | while (child_die && child_die->tag) | |
5823 | { | |
5824 | process_die (child_die, cu); | |
5825 | ||
5826 | child_die = sibling_die (child_die); | |
5827 | } | |
5828 | ||
5829 | do_cleanups (back_to); | |
5830 | } | |
5831 | ||
d389af10 JK |
5832 | /* qsort helper for inherit_abstract_dies. */ |
5833 | ||
5834 | static int | |
5835 | unsigned_int_compar (const void *ap, const void *bp) | |
5836 | { | |
5837 | unsigned int a = *(unsigned int *) ap; | |
5838 | unsigned int b = *(unsigned int *) bp; | |
5839 | ||
5840 | return (a > b) - (b > a); | |
5841 | } | |
5842 | ||
5843 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
5844 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
5845 | already referenced by DW_AT_abstract_origin from the children of the | |
5846 | current DIE. */ | |
d389af10 JK |
5847 | |
5848 | static void | |
5849 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
5850 | { | |
5851 | struct die_info *child_die; | |
5852 | unsigned die_children_count; | |
5853 | /* CU offsets which were referenced by children of the current DIE. */ | |
5854 | unsigned *offsets; | |
5855 | unsigned *offsets_end, *offsetp; | |
5856 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ | |
5857 | struct die_info *origin_die; | |
5858 | /* Iterator of the ORIGIN_DIE children. */ | |
5859 | struct die_info *origin_child_die; | |
5860 | struct cleanup *cleanups; | |
5861 | struct attribute *attr; | |
cd02d79d PA |
5862 | struct dwarf2_cu *origin_cu; |
5863 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
5864 | |
5865 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
5866 | if (!attr) | |
5867 | return; | |
5868 | ||
cd02d79d PA |
5869 | /* Note that following die references may follow to a die in a |
5870 | different cu. */ | |
5871 | ||
5872 | origin_cu = cu; | |
5873 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
5874 | ||
5875 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
5876 | symbols in. */ | |
5877 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
5878 | origin_cu->list_in_scope = cu->list_in_scope; | |
5879 | ||
edb3359d DJ |
5880 | if (die->tag != origin_die->tag |
5881 | && !(die->tag == DW_TAG_inlined_subroutine | |
5882 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5883 | complaint (&symfile_complaints, |
5884 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
5885 | die->offset, origin_die->offset); | |
5886 | ||
5887 | child_die = die->child; | |
5888 | die_children_count = 0; | |
5889 | while (child_die && child_die->tag) | |
5890 | { | |
5891 | child_die = sibling_die (child_die); | |
5892 | die_children_count++; | |
5893 | } | |
5894 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
5895 | cleanups = make_cleanup (xfree, offsets); | |
5896 | ||
5897 | offsets_end = offsets; | |
5898 | child_die = die->child; | |
5899 | while (child_die && child_die->tag) | |
5900 | { | |
c38f313d DJ |
5901 | /* For each CHILD_DIE, find the corresponding child of |
5902 | ORIGIN_DIE. If there is more than one layer of | |
5903 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
5904 | but GCC versions at least through 4.4 generate this (GCC PR | |
5905 | 40573). */ | |
5906 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 5907 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 5908 | |
c38f313d DJ |
5909 | while (1) |
5910 | { | |
cd02d79d PA |
5911 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
5912 | child_origin_cu); | |
c38f313d DJ |
5913 | if (attr == NULL) |
5914 | break; | |
cd02d79d PA |
5915 | child_origin_die = follow_die_ref (child_origin_die, attr, |
5916 | &child_origin_cu); | |
c38f313d DJ |
5917 | } |
5918 | ||
d389af10 JK |
5919 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
5920 | counterpart may exist. */ | |
c38f313d | 5921 | if (child_origin_die != child_die) |
d389af10 | 5922 | { |
edb3359d DJ |
5923 | if (child_die->tag != child_origin_die->tag |
5924 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
5925 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5926 | complaint (&symfile_complaints, |
5927 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5928 | "different tags"), child_die->offset, | |
5929 | child_origin_die->offset); | |
c38f313d DJ |
5930 | if (child_origin_die->parent != origin_die) |
5931 | complaint (&symfile_complaints, | |
5932 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5933 | "different parents"), child_die->offset, | |
5934 | child_origin_die->offset); | |
5935 | else | |
5936 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
5937 | } |
5938 | child_die = sibling_die (child_die); | |
5939 | } | |
5940 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
5941 | unsigned_int_compar); | |
5942 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
5943 | if (offsetp[-1] == *offsetp) | |
3e43a32a MS |
5944 | complaint (&symfile_complaints, |
5945 | _("Multiple children of DIE 0x%x refer " | |
5946 | "to DIE 0x%x as their abstract origin"), | |
d389af10 JK |
5947 | die->offset, *offsetp); |
5948 | ||
5949 | offsetp = offsets; | |
5950 | origin_child_die = origin_die->child; | |
5951 | while (origin_child_die && origin_child_die->tag) | |
5952 | { | |
5953 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
5954 | while (offsetp < offsets_end && *offsetp < origin_child_die->offset) | |
5955 | offsetp++; | |
5956 | if (offsetp >= offsets_end || *offsetp > origin_child_die->offset) | |
5957 | { | |
5958 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 5959 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
5960 | } |
5961 | origin_child_die = sibling_die (origin_child_die); | |
5962 | } | |
cd02d79d | 5963 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
5964 | |
5965 | do_cleanups (cleanups); | |
5966 | } | |
5967 | ||
c906108c | 5968 | static void |
e7c27a73 | 5969 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5970 | { |
e7c27a73 | 5971 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5972 | struct context_stack *new; |
c906108c SS |
5973 | CORE_ADDR lowpc; |
5974 | CORE_ADDR highpc; | |
5975 | struct die_info *child_die; | |
edb3359d | 5976 | struct attribute *attr, *call_line, *call_file; |
c906108c | 5977 | char *name; |
e142c38c | 5978 | CORE_ADDR baseaddr; |
801e3a5b | 5979 | struct block *block; |
edb3359d | 5980 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
5981 | VEC (symbolp) *template_args = NULL; |
5982 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
5983 | |
5984 | if (inlined_func) | |
5985 | { | |
5986 | /* If we do not have call site information, we can't show the | |
5987 | caller of this inlined function. That's too confusing, so | |
5988 | only use the scope for local variables. */ | |
5989 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
5990 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
5991 | if (call_line == NULL || call_file == NULL) | |
5992 | { | |
5993 | read_lexical_block_scope (die, cu); | |
5994 | return; | |
5995 | } | |
5996 | } | |
c906108c | 5997 | |
e142c38c DJ |
5998 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
5999 | ||
94af9270 | 6000 | name = dwarf2_name (die, cu); |
c906108c | 6001 | |
e8d05480 JB |
6002 | /* Ignore functions with missing or empty names. These are actually |
6003 | illegal according to the DWARF standard. */ | |
6004 | if (name == NULL) | |
6005 | { | |
6006 | complaint (&symfile_complaints, | |
6007 | _("missing name for subprogram DIE at %d"), die->offset); | |
6008 | return; | |
6009 | } | |
6010 | ||
6011 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
6012 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
6013 | { | |
ae4d0c03 PM |
6014 | attr = dwarf2_attr (die, DW_AT_external, cu); |
6015 | if (!attr || !DW_UNSND (attr)) | |
6016 | complaint (&symfile_complaints, | |
3e43a32a MS |
6017 | _("cannot get low and high bounds " |
6018 | "for subprogram DIE at %d"), | |
ae4d0c03 | 6019 | die->offset); |
e8d05480 JB |
6020 | return; |
6021 | } | |
c906108c SS |
6022 | |
6023 | lowpc += baseaddr; | |
6024 | highpc += baseaddr; | |
6025 | ||
34eaf542 TT |
6026 | /* If we have any template arguments, then we must allocate a |
6027 | different sort of symbol. */ | |
6028 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
6029 | { | |
6030 | if (child_die->tag == DW_TAG_template_type_param | |
6031 | || child_die->tag == DW_TAG_template_value_param) | |
6032 | { | |
6033 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6034 | struct template_symbol); | |
6035 | templ_func->base.is_cplus_template_function = 1; | |
6036 | break; | |
6037 | } | |
6038 | } | |
6039 | ||
c906108c | 6040 | new = push_context (0, lowpc); |
34eaf542 TT |
6041 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
6042 | (struct symbol *) templ_func); | |
4c2df51b | 6043 | |
4cecd739 DJ |
6044 | /* If there is a location expression for DW_AT_frame_base, record |
6045 | it. */ | |
e142c38c | 6046 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 6047 | if (attr) |
c034e007 AC |
6048 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
6049 | expression is being recorded directly in the function's symbol | |
6050 | and not in a separate frame-base object. I guess this hack is | |
6051 | to avoid adding some sort of frame-base adjunct/annex to the | |
6052 | function's symbol :-(. The problem with doing this is that it | |
6053 | results in a function symbol with a location expression that | |
6054 | has nothing to do with the location of the function, ouch! The | |
6055 | relationship should be: a function's symbol has-a frame base; a | |
6056 | frame-base has-a location expression. */ | |
e7c27a73 | 6057 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 6058 | |
e142c38c | 6059 | cu->list_in_scope = &local_symbols; |
c906108c | 6060 | |
639d11d3 | 6061 | if (die->child != NULL) |
c906108c | 6062 | { |
639d11d3 | 6063 | child_die = die->child; |
c906108c SS |
6064 | while (child_die && child_die->tag) |
6065 | { | |
34eaf542 TT |
6066 | if (child_die->tag == DW_TAG_template_type_param |
6067 | || child_die->tag == DW_TAG_template_value_param) | |
6068 | { | |
6069 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
6070 | ||
f1078f66 DJ |
6071 | if (arg != NULL) |
6072 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
6073 | } |
6074 | else | |
6075 | process_die (child_die, cu); | |
c906108c SS |
6076 | child_die = sibling_die (child_die); |
6077 | } | |
6078 | } | |
6079 | ||
d389af10 JK |
6080 | inherit_abstract_dies (die, cu); |
6081 | ||
4a811a97 UW |
6082 | /* If we have a DW_AT_specification, we might need to import using |
6083 | directives from the context of the specification DIE. See the | |
6084 | comment in determine_prefix. */ | |
6085 | if (cu->language == language_cplus | |
6086 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
6087 | { | |
6088 | struct dwarf2_cu *spec_cu = cu; | |
6089 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
6090 | ||
6091 | while (spec_die) | |
6092 | { | |
6093 | child_die = spec_die->child; | |
6094 | while (child_die && child_die->tag) | |
6095 | { | |
6096 | if (child_die->tag == DW_TAG_imported_module) | |
6097 | process_die (child_die, spec_cu); | |
6098 | child_die = sibling_die (child_die); | |
6099 | } | |
6100 | ||
6101 | /* In some cases, GCC generates specification DIEs that | |
6102 | themselves contain DW_AT_specification attributes. */ | |
6103 | spec_die = die_specification (spec_die, &spec_cu); | |
6104 | } | |
6105 | } | |
6106 | ||
c906108c SS |
6107 | new = pop_context (); |
6108 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
6109 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
6110 | lowpc, highpc, objfile); | |
6111 | ||
df8a16a1 | 6112 | /* For C++, set the block's scope. */ |
f55ee35c | 6113 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 6114 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 6115 | determine_prefix (die, cu), |
df8a16a1 DJ |
6116 | processing_has_namespace_info); |
6117 | ||
801e3a5b JB |
6118 | /* If we have address ranges, record them. */ |
6119 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 6120 | |
34eaf542 TT |
6121 | /* Attach template arguments to function. */ |
6122 | if (! VEC_empty (symbolp, template_args)) | |
6123 | { | |
6124 | gdb_assert (templ_func != NULL); | |
6125 | ||
6126 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
6127 | templ_func->template_arguments | |
6128 | = obstack_alloc (&objfile->objfile_obstack, | |
6129 | (templ_func->n_template_arguments | |
6130 | * sizeof (struct symbol *))); | |
6131 | memcpy (templ_func->template_arguments, | |
6132 | VEC_address (symbolp, template_args), | |
6133 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
6134 | VEC_free (symbolp, template_args); | |
6135 | } | |
6136 | ||
208d8187 JB |
6137 | /* In C++, we can have functions nested inside functions (e.g., when |
6138 | a function declares a class that has methods). This means that | |
6139 | when we finish processing a function scope, we may need to go | |
6140 | back to building a containing block's symbol lists. */ | |
6141 | local_symbols = new->locals; | |
6142 | param_symbols = new->params; | |
27aa8d6a | 6143 | using_directives = new->using_directives; |
208d8187 | 6144 | |
921e78cf JB |
6145 | /* If we've finished processing a top-level function, subsequent |
6146 | symbols go in the file symbol list. */ | |
6147 | if (outermost_context_p ()) | |
e142c38c | 6148 | cu->list_in_scope = &file_symbols; |
c906108c SS |
6149 | } |
6150 | ||
6151 | /* Process all the DIES contained within a lexical block scope. Start | |
6152 | a new scope, process the dies, and then close the scope. */ | |
6153 | ||
6154 | static void | |
e7c27a73 | 6155 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6156 | { |
e7c27a73 | 6157 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 6158 | struct context_stack *new; |
c906108c SS |
6159 | CORE_ADDR lowpc, highpc; |
6160 | struct die_info *child_die; | |
e142c38c DJ |
6161 | CORE_ADDR baseaddr; |
6162 | ||
6163 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
6164 | |
6165 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
6166 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
6167 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 6168 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 6169 | describe ranges. */ |
d85a05f0 | 6170 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
6171 | return; |
6172 | lowpc += baseaddr; | |
6173 | highpc += baseaddr; | |
6174 | ||
6175 | push_context (0, lowpc); | |
639d11d3 | 6176 | if (die->child != NULL) |
c906108c | 6177 | { |
639d11d3 | 6178 | child_die = die->child; |
c906108c SS |
6179 | while (child_die && child_die->tag) |
6180 | { | |
e7c27a73 | 6181 | process_die (child_die, cu); |
c906108c SS |
6182 | child_die = sibling_die (child_die); |
6183 | } | |
6184 | } | |
6185 | new = pop_context (); | |
6186 | ||
8540c487 | 6187 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 6188 | { |
801e3a5b JB |
6189 | struct block *block |
6190 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
6191 | highpc, objfile); | |
6192 | ||
6193 | /* Note that recording ranges after traversing children, as we | |
6194 | do here, means that recording a parent's ranges entails | |
6195 | walking across all its children's ranges as they appear in | |
6196 | the address map, which is quadratic behavior. | |
6197 | ||
6198 | It would be nicer to record the parent's ranges before | |
6199 | traversing its children, simply overriding whatever you find | |
6200 | there. But since we don't even decide whether to create a | |
6201 | block until after we've traversed its children, that's hard | |
6202 | to do. */ | |
6203 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
6204 | } |
6205 | local_symbols = new->locals; | |
27aa8d6a | 6206 | using_directives = new->using_directives; |
c906108c SS |
6207 | } |
6208 | ||
96408a79 SA |
6209 | /* Read in DW_TAG_GNU_call_site and insert it to CU->call_site_htab. */ |
6210 | ||
6211 | static void | |
6212 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6213 | { | |
6214 | struct objfile *objfile = cu->objfile; | |
6215 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6216 | CORE_ADDR pc, baseaddr; | |
6217 | struct attribute *attr; | |
6218 | struct call_site *call_site, call_site_local; | |
6219 | void **slot; | |
6220 | int nparams; | |
6221 | struct die_info *child_die; | |
6222 | ||
6223 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
6224 | ||
6225 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6226 | if (!attr) | |
6227 | { | |
6228 | complaint (&symfile_complaints, | |
6229 | _("missing DW_AT_low_pc for DW_TAG_GNU_call_site " | |
6230 | "DIE 0x%x [in module %s]"), | |
bb5ed363 | 6231 | die->offset, objfile->name); |
96408a79 SA |
6232 | return; |
6233 | } | |
6234 | pc = DW_ADDR (attr) + baseaddr; | |
6235 | ||
6236 | if (cu->call_site_htab == NULL) | |
6237 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
6238 | NULL, &objfile->objfile_obstack, | |
6239 | hashtab_obstack_allocate, NULL); | |
6240 | call_site_local.pc = pc; | |
6241 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
6242 | if (*slot != NULL) | |
6243 | { | |
6244 | complaint (&symfile_complaints, | |
6245 | _("Duplicate PC %s for DW_TAG_GNU_call_site " | |
6246 | "DIE 0x%x [in module %s]"), | |
bb5ed363 | 6247 | paddress (gdbarch, pc), die->offset, objfile->name); |
96408a79 SA |
6248 | return; |
6249 | } | |
6250 | ||
6251 | /* Count parameters at the caller. */ | |
6252 | ||
6253 | nparams = 0; | |
6254 | for (child_die = die->child; child_die && child_die->tag; | |
6255 | child_die = sibling_die (child_die)) | |
6256 | { | |
6257 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
6258 | { | |
6259 | complaint (&symfile_complaints, | |
6260 | _("Tag %d is not DW_TAG_GNU_call_site_parameter in " | |
6261 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
bb5ed363 | 6262 | child_die->tag, child_die->offset, objfile->name); |
96408a79 SA |
6263 | continue; |
6264 | } | |
6265 | ||
6266 | nparams++; | |
6267 | } | |
6268 | ||
6269 | call_site = obstack_alloc (&objfile->objfile_obstack, | |
6270 | (sizeof (*call_site) | |
6271 | + (sizeof (*call_site->parameter) | |
6272 | * (nparams - 1)))); | |
6273 | *slot = call_site; | |
6274 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
6275 | call_site->pc = pc; | |
6276 | ||
6277 | if (dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
6278 | { | |
6279 | struct die_info *func_die; | |
6280 | ||
6281 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
6282 | for (func_die = die->parent; | |
6283 | func_die && func_die->tag != DW_TAG_subprogram | |
6284 | && func_die->tag != DW_TAG_subroutine_type; | |
6285 | func_die = func_die->parent); | |
6286 | ||
6287 | /* DW_AT_GNU_all_call_sites is a superset | |
6288 | of DW_AT_GNU_all_tail_call_sites. */ | |
6289 | if (func_die | |
6290 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) | |
6291 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) | |
6292 | { | |
6293 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
6294 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
6295 | both the initial caller containing the real return address PC and | |
6296 | the final callee containing the current PC of a chain of tail | |
6297 | calls do not need to have the tail call list complete. But any | |
6298 | function candidate for a virtual tail call frame searched via | |
6299 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
6300 | determined unambiguously. */ | |
6301 | } | |
6302 | else | |
6303 | { | |
6304 | struct type *func_type = NULL; | |
6305 | ||
6306 | if (func_die) | |
6307 | func_type = get_die_type (func_die, cu); | |
6308 | if (func_type != NULL) | |
6309 | { | |
6310 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
6311 | ||
6312 | /* Enlist this call site to the function. */ | |
6313 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
6314 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
6315 | } | |
6316 | else | |
6317 | complaint (&symfile_complaints, | |
6318 | _("Cannot find function owning DW_TAG_GNU_call_site " | |
6319 | "DIE 0x%x [in module %s]"), | |
bb5ed363 | 6320 | die->offset, objfile->name); |
96408a79 SA |
6321 | } |
6322 | } | |
6323 | ||
6324 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
6325 | if (attr == NULL) | |
6326 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
6327 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); | |
6328 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
6329 | /* Keep NULL DWARF_BLOCK. */; | |
6330 | else if (attr_form_is_block (attr)) | |
6331 | { | |
6332 | struct dwarf2_locexpr_baton *dlbaton; | |
6333 | ||
6334 | dlbaton = obstack_alloc (&objfile->objfile_obstack, sizeof (*dlbaton)); | |
6335 | dlbaton->data = DW_BLOCK (attr)->data; | |
6336 | dlbaton->size = DW_BLOCK (attr)->size; | |
6337 | dlbaton->per_cu = cu->per_cu; | |
6338 | ||
6339 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
6340 | } | |
6341 | else if (is_ref_attr (attr)) | |
6342 | { | |
96408a79 SA |
6343 | struct dwarf2_cu *target_cu = cu; |
6344 | struct die_info *target_die; | |
6345 | ||
6346 | target_die = follow_die_ref_or_sig (die, attr, &target_cu); | |
6347 | gdb_assert (target_cu->objfile == objfile); | |
6348 | if (die_is_declaration (target_die, target_cu)) | |
6349 | { | |
6350 | const char *target_physname; | |
6351 | ||
6352 | target_physname = dwarf2_physname (NULL, target_die, target_cu); | |
6353 | if (target_physname == NULL) | |
6354 | complaint (&symfile_complaints, | |
6355 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
6356 | "physname, for referencing DIE 0x%x [in module %s]"), | |
bb5ed363 | 6357 | die->offset, objfile->name); |
96408a79 SA |
6358 | else |
6359 | SET_FIELD_PHYSNAME (call_site->target, (char *) target_physname); | |
6360 | } | |
6361 | else | |
6362 | { | |
6363 | CORE_ADDR lowpc; | |
6364 | ||
6365 | /* DW_AT_entry_pc should be preferred. */ | |
6366 | if (!dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL)) | |
6367 | complaint (&symfile_complaints, | |
6368 | _("DW_AT_GNU_call_site_target target DIE has invalid " | |
6369 | "low pc, for referencing DIE 0x%x [in module %s]"), | |
bb5ed363 | 6370 | die->offset, objfile->name); |
96408a79 SA |
6371 | else |
6372 | SET_FIELD_PHYSADDR (call_site->target, lowpc + baseaddr); | |
6373 | } | |
6374 | } | |
6375 | else | |
6376 | complaint (&symfile_complaints, | |
6377 | _("DW_TAG_GNU_call_site DW_AT_GNU_call_site_target is neither " | |
6378 | "block nor reference, for DIE 0x%x [in module %s]"), | |
bb5ed363 | 6379 | die->offset, objfile->name); |
96408a79 SA |
6380 | |
6381 | call_site->per_cu = cu->per_cu; | |
6382 | ||
6383 | for (child_die = die->child; | |
6384 | child_die && child_die->tag; | |
6385 | child_die = sibling_die (child_die)) | |
6386 | { | |
6387 | struct dwarf2_locexpr_baton *dlbaton; | |
6388 | struct call_site_parameter *parameter; | |
6389 | ||
6390 | if (child_die->tag != DW_TAG_GNU_call_site_parameter) | |
6391 | { | |
6392 | /* Already printed the complaint above. */ | |
6393 | continue; | |
6394 | } | |
6395 | ||
6396 | gdb_assert (call_site->parameter_count < nparams); | |
6397 | parameter = &call_site->parameter[call_site->parameter_count]; | |
6398 | ||
6399 | /* DW_AT_location specifies the register number. Value of the data | |
6400 | assumed for the register is contained in DW_AT_GNU_call_site_value. */ | |
6401 | ||
6402 | attr = dwarf2_attr (child_die, DW_AT_location, cu); | |
6403 | if (!attr || !attr_form_is_block (attr)) | |
6404 | { | |
6405 | complaint (&symfile_complaints, | |
6406 | _("No DW_FORM_block* DW_AT_location for " | |
6407 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
bb5ed363 | 6408 | child_die->offset, objfile->name); |
96408a79 SA |
6409 | continue; |
6410 | } | |
6411 | parameter->dwarf_reg = dwarf_block_to_dwarf_reg (DW_BLOCK (attr)->data, | |
6412 | &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size]); | |
6413 | if (parameter->dwarf_reg == -1 | |
6414 | && !dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (attr)->data, | |
6415 | &DW_BLOCK (attr)->data[DW_BLOCK (attr)->size], | |
6416 | ¶meter->fb_offset)) | |
6417 | { | |
6418 | complaint (&symfile_complaints, | |
6419 | _("Only single DW_OP_reg or DW_OP_fbreg is supported " | |
6420 | "for DW_FORM_block* DW_AT_location for " | |
6421 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
bb5ed363 | 6422 | child_die->offset, objfile->name); |
96408a79 SA |
6423 | continue; |
6424 | } | |
6425 | ||
6426 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
6427 | if (!attr_form_is_block (attr)) | |
6428 | { | |
6429 | complaint (&symfile_complaints, | |
6430 | _("No DW_FORM_block* DW_AT_GNU_call_site_value for " | |
6431 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
bb5ed363 | 6432 | child_die->offset, objfile->name); |
96408a79 SA |
6433 | continue; |
6434 | } | |
6435 | parameter->value = DW_BLOCK (attr)->data; | |
6436 | parameter->value_size = DW_BLOCK (attr)->size; | |
6437 | ||
6438 | /* Parameters are not pre-cleared by memset above. */ | |
6439 | parameter->data_value = NULL; | |
6440 | parameter->data_value_size = 0; | |
6441 | call_site->parameter_count++; | |
6442 | ||
6443 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
6444 | if (attr) | |
6445 | { | |
6446 | if (!attr_form_is_block (attr)) | |
6447 | complaint (&symfile_complaints, | |
6448 | _("No DW_FORM_block* DW_AT_GNU_call_site_data_value for " | |
6449 | "DW_TAG_GNU_call_site child DIE 0x%x [in module %s]"), | |
bb5ed363 | 6450 | child_die->offset, objfile->name); |
96408a79 SA |
6451 | else |
6452 | { | |
6453 | parameter->data_value = DW_BLOCK (attr)->data; | |
6454 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
6455 | } | |
6456 | } | |
6457 | } | |
6458 | } | |
6459 | ||
43039443 | 6460 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
6461 | Return 1 if the attributes are present and valid, otherwise, return 0. |
6462 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
6463 | |
6464 | static int | |
6465 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
6466 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
6467 | struct partial_symtab *ranges_pst) | |
43039443 JK |
6468 | { |
6469 | struct objfile *objfile = cu->objfile; | |
6470 | struct comp_unit_head *cu_header = &cu->header; | |
6471 | bfd *obfd = objfile->obfd; | |
6472 | unsigned int addr_size = cu_header->addr_size; | |
6473 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
6474 | /* Base address selection entry. */ | |
6475 | CORE_ADDR base; | |
6476 | int found_base; | |
6477 | unsigned int dummy; | |
6478 | gdb_byte *buffer; | |
6479 | CORE_ADDR marker; | |
6480 | int low_set; | |
6481 | CORE_ADDR low = 0; | |
6482 | CORE_ADDR high = 0; | |
ff013f42 | 6483 | CORE_ADDR baseaddr; |
43039443 | 6484 | |
d00adf39 DE |
6485 | found_base = cu->base_known; |
6486 | base = cu->base_address; | |
43039443 | 6487 | |
be391dca | 6488 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 6489 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
6490 | { |
6491 | complaint (&symfile_complaints, | |
6492 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
6493 | offset); | |
6494 | return 0; | |
6495 | } | |
dce234bc | 6496 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
6497 | |
6498 | /* Read in the largest possible address. */ | |
6499 | marker = read_address (obfd, buffer, cu, &dummy); | |
6500 | if ((marker & mask) == mask) | |
6501 | { | |
6502 | /* If we found the largest possible address, then | |
6503 | read the base address. */ | |
6504 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
6505 | buffer += 2 * addr_size; | |
6506 | offset += 2 * addr_size; | |
6507 | found_base = 1; | |
6508 | } | |
6509 | ||
6510 | low_set = 0; | |
6511 | ||
e7030f15 | 6512 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 6513 | |
43039443 JK |
6514 | while (1) |
6515 | { | |
6516 | CORE_ADDR range_beginning, range_end; | |
6517 | ||
6518 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
6519 | buffer += addr_size; | |
6520 | range_end = read_address (obfd, buffer, cu, &dummy); | |
6521 | buffer += addr_size; | |
6522 | offset += 2 * addr_size; | |
6523 | ||
6524 | /* An end of list marker is a pair of zero addresses. */ | |
6525 | if (range_beginning == 0 && range_end == 0) | |
6526 | /* Found the end of list entry. */ | |
6527 | break; | |
6528 | ||
6529 | /* Each base address selection entry is a pair of 2 values. | |
6530 | The first is the largest possible address, the second is | |
6531 | the base address. Check for a base address here. */ | |
6532 | if ((range_beginning & mask) == mask) | |
6533 | { | |
6534 | /* If we found the largest possible address, then | |
6535 | read the base address. */ | |
6536 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
6537 | found_base = 1; | |
6538 | continue; | |
6539 | } | |
6540 | ||
6541 | if (!found_base) | |
6542 | { | |
6543 | /* We have no valid base address for the ranges | |
6544 | data. */ | |
6545 | complaint (&symfile_complaints, | |
6546 | _("Invalid .debug_ranges data (no base address)")); | |
6547 | return 0; | |
6548 | } | |
6549 | ||
9277c30c UW |
6550 | if (range_beginning > range_end) |
6551 | { | |
6552 | /* Inverted range entries are invalid. */ | |
6553 | complaint (&symfile_complaints, | |
6554 | _("Invalid .debug_ranges data (inverted range)")); | |
6555 | return 0; | |
6556 | } | |
6557 | ||
6558 | /* Empty range entries have no effect. */ | |
6559 | if (range_beginning == range_end) | |
6560 | continue; | |
6561 | ||
43039443 JK |
6562 | range_beginning += base; |
6563 | range_end += base; | |
6564 | ||
9277c30c | 6565 | if (ranges_pst != NULL) |
ff013f42 | 6566 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
6567 | range_beginning + baseaddr, |
6568 | range_end - 1 + baseaddr, | |
ff013f42 JK |
6569 | ranges_pst); |
6570 | ||
43039443 JK |
6571 | /* FIXME: This is recording everything as a low-high |
6572 | segment of consecutive addresses. We should have a | |
6573 | data structure for discontiguous block ranges | |
6574 | instead. */ | |
6575 | if (! low_set) | |
6576 | { | |
6577 | low = range_beginning; | |
6578 | high = range_end; | |
6579 | low_set = 1; | |
6580 | } | |
6581 | else | |
6582 | { | |
6583 | if (range_beginning < low) | |
6584 | low = range_beginning; | |
6585 | if (range_end > high) | |
6586 | high = range_end; | |
6587 | } | |
6588 | } | |
6589 | ||
6590 | if (! low_set) | |
6591 | /* If the first entry is an end-of-list marker, the range | |
6592 | describes an empty scope, i.e. no instructions. */ | |
6593 | return 0; | |
6594 | ||
6595 | if (low_return) | |
6596 | *low_return = low; | |
6597 | if (high_return) | |
6598 | *high_return = high; | |
6599 | return 1; | |
6600 | } | |
6601 | ||
af34e669 DJ |
6602 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
6603 | are present and valid, otherwise, return 0. Return -1 if the range is | |
6604 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 6605 | static int |
af34e669 | 6606 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
6607 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
6608 | struct partial_symtab *pst) | |
c906108c SS |
6609 | { |
6610 | struct attribute *attr; | |
af34e669 DJ |
6611 | CORE_ADDR low = 0; |
6612 | CORE_ADDR high = 0; | |
6613 | int ret = 0; | |
c906108c | 6614 | |
e142c38c | 6615 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 6616 | if (attr) |
af34e669 DJ |
6617 | { |
6618 | high = DW_ADDR (attr); | |
e142c38c | 6619 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
6620 | if (attr) |
6621 | low = DW_ADDR (attr); | |
6622 | else | |
6623 | /* Found high w/o low attribute. */ | |
6624 | return 0; | |
6625 | ||
6626 | /* Found consecutive range of addresses. */ | |
6627 | ret = 1; | |
6628 | } | |
c906108c | 6629 | else |
af34e669 | 6630 | { |
e142c38c | 6631 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
6632 | if (attr != NULL) |
6633 | { | |
af34e669 | 6634 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 6635 | .debug_ranges section. */ |
d85a05f0 | 6636 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 6637 | return 0; |
43039443 | 6638 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
6639 | ret = -1; |
6640 | } | |
6641 | } | |
c906108c | 6642 | |
9373cf26 JK |
6643 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
6644 | if (high <= low) | |
c906108c SS |
6645 | return 0; |
6646 | ||
6647 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
6648 | eliminate duplicate copies of functions and vtables and such. | |
6649 | The linker will arbitrarily choose one and discard the others. | |
6650 | The AT_*_pc values for such functions refer to local labels in | |
6651 | these sections. If the section from that file was discarded, the | |
6652 | labels are not in the output, so the relocs get a value of 0. | |
6653 | If this is a discarded function, mark the pc bounds as invalid, | |
6654 | so that GDB will ignore it. */ | |
72dca2f5 | 6655 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
6656 | return 0; |
6657 | ||
6658 | *lowpc = low; | |
96408a79 SA |
6659 | if (highpc) |
6660 | *highpc = high; | |
af34e669 | 6661 | return ret; |
c906108c SS |
6662 | } |
6663 | ||
b084d499 JB |
6664 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
6665 | its low and high PC addresses. Do nothing if these addresses could not | |
6666 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
6667 | and HIGHPC to the high address if greater than HIGHPC. */ | |
6668 | ||
6669 | static void | |
6670 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
6671 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
6672 | struct dwarf2_cu *cu) | |
6673 | { | |
6674 | CORE_ADDR low, high; | |
6675 | struct die_info *child = die->child; | |
6676 | ||
d85a05f0 | 6677 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
6678 | { |
6679 | *lowpc = min (*lowpc, low); | |
6680 | *highpc = max (*highpc, high); | |
6681 | } | |
6682 | ||
6683 | /* If the language does not allow nested subprograms (either inside | |
6684 | subprograms or lexical blocks), we're done. */ | |
6685 | if (cu->language != language_ada) | |
6686 | return; | |
6e70227d | 6687 | |
b084d499 JB |
6688 | /* Check all the children of the given DIE. If it contains nested |
6689 | subprograms, then check their pc bounds. Likewise, we need to | |
6690 | check lexical blocks as well, as they may also contain subprogram | |
6691 | definitions. */ | |
6692 | while (child && child->tag) | |
6693 | { | |
6694 | if (child->tag == DW_TAG_subprogram | |
6695 | || child->tag == DW_TAG_lexical_block) | |
6696 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
6697 | child = sibling_die (child); | |
6698 | } | |
6699 | } | |
6700 | ||
fae299cd DC |
6701 | /* Get the low and high pc's represented by the scope DIE, and store |
6702 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
6703 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
6704 | ||
6705 | static void | |
6706 | get_scope_pc_bounds (struct die_info *die, | |
6707 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
6708 | struct dwarf2_cu *cu) | |
6709 | { | |
6710 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
6711 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
6712 | CORE_ADDR current_low, current_high; | |
6713 | ||
d85a05f0 | 6714 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
6715 | { |
6716 | best_low = current_low; | |
6717 | best_high = current_high; | |
6718 | } | |
6719 | else | |
6720 | { | |
6721 | struct die_info *child = die->child; | |
6722 | ||
6723 | while (child && child->tag) | |
6724 | { | |
6725 | switch (child->tag) { | |
6726 | case DW_TAG_subprogram: | |
b084d499 | 6727 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
6728 | break; |
6729 | case DW_TAG_namespace: | |
f55ee35c | 6730 | case DW_TAG_module: |
fae299cd DC |
6731 | /* FIXME: carlton/2004-01-16: Should we do this for |
6732 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
6733 | that current GCC's always emit the DIEs corresponding | |
6734 | to definitions of methods of classes as children of a | |
6735 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
6736 | the DIEs giving the declarations, which could be | |
6737 | anywhere). But I don't see any reason why the | |
6738 | standards says that they have to be there. */ | |
6739 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
6740 | ||
6741 | if (current_low != ((CORE_ADDR) -1)) | |
6742 | { | |
6743 | best_low = min (best_low, current_low); | |
6744 | best_high = max (best_high, current_high); | |
6745 | } | |
6746 | break; | |
6747 | default: | |
0963b4bd | 6748 | /* Ignore. */ |
fae299cd DC |
6749 | break; |
6750 | } | |
6751 | ||
6752 | child = sibling_die (child); | |
6753 | } | |
6754 | } | |
6755 | ||
6756 | *lowpc = best_low; | |
6757 | *highpc = best_high; | |
6758 | } | |
6759 | ||
801e3a5b JB |
6760 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
6761 | in DIE. */ | |
6762 | static void | |
6763 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
6764 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
6765 | { | |
bb5ed363 | 6766 | struct objfile *objfile = cu->objfile; |
801e3a5b JB |
6767 | struct attribute *attr; |
6768 | ||
6769 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
6770 | if (attr) | |
6771 | { | |
6772 | CORE_ADDR high = DW_ADDR (attr); | |
9a619af0 | 6773 | |
801e3a5b JB |
6774 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
6775 | if (attr) | |
6776 | { | |
6777 | CORE_ADDR low = DW_ADDR (attr); | |
9a619af0 | 6778 | |
801e3a5b JB |
6779 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
6780 | } | |
6781 | } | |
6782 | ||
6783 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
6784 | if (attr) | |
6785 | { | |
bb5ed363 | 6786 | bfd *obfd = objfile->obfd; |
801e3a5b JB |
6787 | |
6788 | /* The value of the DW_AT_ranges attribute is the offset of the | |
6789 | address range list in the .debug_ranges section. */ | |
6790 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 6791 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
6792 | |
6793 | /* For some target architectures, but not others, the | |
6794 | read_address function sign-extends the addresses it returns. | |
6795 | To recognize base address selection entries, we need a | |
6796 | mask. */ | |
6797 | unsigned int addr_size = cu->header.addr_size; | |
6798 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
6799 | ||
6800 | /* The base address, to which the next pair is relative. Note | |
6801 | that this 'base' is a DWARF concept: most entries in a range | |
6802 | list are relative, to reduce the number of relocs against the | |
6803 | debugging information. This is separate from this function's | |
6804 | 'baseaddr' argument, which GDB uses to relocate debugging | |
6805 | information from a shared library based on the address at | |
6806 | which the library was loaded. */ | |
d00adf39 DE |
6807 | CORE_ADDR base = cu->base_address; |
6808 | int base_known = cu->base_known; | |
801e3a5b | 6809 | |
be391dca | 6810 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 6811 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
6812 | { |
6813 | complaint (&symfile_complaints, | |
6814 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
6815 | offset); | |
6816 | return; | |
6817 | } | |
6818 | ||
6819 | for (;;) | |
6820 | { | |
6821 | unsigned int bytes_read; | |
6822 | CORE_ADDR start, end; | |
6823 | ||
6824 | start = read_address (obfd, buffer, cu, &bytes_read); | |
6825 | buffer += bytes_read; | |
6826 | end = read_address (obfd, buffer, cu, &bytes_read); | |
6827 | buffer += bytes_read; | |
6828 | ||
6829 | /* Did we find the end of the range list? */ | |
6830 | if (start == 0 && end == 0) | |
6831 | break; | |
6832 | ||
6833 | /* Did we find a base address selection entry? */ | |
6834 | else if ((start & base_select_mask) == base_select_mask) | |
6835 | { | |
6836 | base = end; | |
6837 | base_known = 1; | |
6838 | } | |
6839 | ||
6840 | /* We found an ordinary address range. */ | |
6841 | else | |
6842 | { | |
6843 | if (!base_known) | |
6844 | { | |
6845 | complaint (&symfile_complaints, | |
3e43a32a MS |
6846 | _("Invalid .debug_ranges data " |
6847 | "(no base address)")); | |
801e3a5b JB |
6848 | return; |
6849 | } | |
6850 | ||
9277c30c UW |
6851 | if (start > end) |
6852 | { | |
6853 | /* Inverted range entries are invalid. */ | |
6854 | complaint (&symfile_complaints, | |
6855 | _("Invalid .debug_ranges data " | |
6856 | "(inverted range)")); | |
6857 | return; | |
6858 | } | |
6859 | ||
6860 | /* Empty range entries have no effect. */ | |
6861 | if (start == end) | |
6862 | continue; | |
6863 | ||
6e70227d DE |
6864 | record_block_range (block, |
6865 | baseaddr + base + start, | |
801e3a5b JB |
6866 | baseaddr + base + end - 1); |
6867 | } | |
6868 | } | |
6869 | } | |
6870 | } | |
6871 | ||
60d5a603 JK |
6872 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
6873 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
6874 | during 4.6.0 experimental. */ | |
6875 | ||
6876 | static int | |
6877 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) | |
6878 | { | |
6879 | const char *cs; | |
6880 | int major, minor, release; | |
6881 | ||
6882 | if (cu->producer == NULL) | |
6883 | { | |
6884 | /* For unknown compilers expect their behavior is DWARF version | |
6885 | compliant. | |
6886 | ||
6887 | GCC started to support .debug_types sections by -gdwarf-4 since | |
6888 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
6889 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
6890 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
6891 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
6892 | ||
6893 | return 0; | |
6894 | } | |
6895 | ||
6896 | /* Skip any identifier after "GNU " - such as "C++" or "Java". */ | |
6897 | ||
6898 | if (strncmp (cu->producer, "GNU ", strlen ("GNU ")) != 0) | |
6899 | { | |
6900 | /* For non-GCC compilers expect their behavior is DWARF version | |
6901 | compliant. */ | |
6902 | ||
6903 | return 0; | |
6904 | } | |
6905 | cs = &cu->producer[strlen ("GNU ")]; | |
6906 | while (*cs && !isdigit (*cs)) | |
6907 | cs++; | |
6908 | if (sscanf (cs, "%d.%d.%d", &major, &minor, &release) != 3) | |
6909 | { | |
6910 | /* Not recognized as GCC. */ | |
6911 | ||
6912 | return 0; | |
6913 | } | |
6914 | ||
6915 | return major < 4 || (major == 4 && minor < 6); | |
6916 | } | |
6917 | ||
6918 | /* Return the default accessibility type if it is not overriden by | |
6919 | DW_AT_accessibility. */ | |
6920 | ||
6921 | static enum dwarf_access_attribute | |
6922 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
6923 | { | |
6924 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
6925 | { | |
6926 | /* The default DWARF 2 accessibility for members is public, the default | |
6927 | accessibility for inheritance is private. */ | |
6928 | ||
6929 | if (die->tag != DW_TAG_inheritance) | |
6930 | return DW_ACCESS_public; | |
6931 | else | |
6932 | return DW_ACCESS_private; | |
6933 | } | |
6934 | else | |
6935 | { | |
6936 | /* DWARF 3+ defines the default accessibility a different way. The same | |
6937 | rules apply now for DW_TAG_inheritance as for the members and it only | |
6938 | depends on the container kind. */ | |
6939 | ||
6940 | if (die->parent->tag == DW_TAG_class_type) | |
6941 | return DW_ACCESS_private; | |
6942 | else | |
6943 | return DW_ACCESS_public; | |
6944 | } | |
6945 | } | |
6946 | ||
74ac6d43 TT |
6947 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
6948 | offset. If the attribute was not found return 0, otherwise return | |
6949 | 1. If it was found but could not properly be handled, set *OFFSET | |
6950 | to 0. */ | |
6951 | ||
6952 | static int | |
6953 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
6954 | LONGEST *offset) | |
6955 | { | |
6956 | struct attribute *attr; | |
6957 | ||
6958 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
6959 | if (attr != NULL) | |
6960 | { | |
6961 | *offset = 0; | |
6962 | ||
6963 | /* Note that we do not check for a section offset first here. | |
6964 | This is because DW_AT_data_member_location is new in DWARF 4, | |
6965 | so if we see it, we can assume that a constant form is really | |
6966 | a constant and not a section offset. */ | |
6967 | if (attr_form_is_constant (attr)) | |
6968 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
6969 | else if (attr_form_is_section_offset (attr)) | |
6970 | dwarf2_complex_location_expr_complaint (); | |
6971 | else if (attr_form_is_block (attr)) | |
6972 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
6973 | else | |
6974 | dwarf2_complex_location_expr_complaint (); | |
6975 | ||
6976 | return 1; | |
6977 | } | |
6978 | ||
6979 | return 0; | |
6980 | } | |
6981 | ||
c906108c SS |
6982 | /* Add an aggregate field to the field list. */ |
6983 | ||
6984 | static void | |
107d2387 | 6985 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 6986 | struct dwarf2_cu *cu) |
6e70227d | 6987 | { |
e7c27a73 | 6988 | struct objfile *objfile = cu->objfile; |
5e2b427d | 6989 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
6990 | struct nextfield *new_field; |
6991 | struct attribute *attr; | |
6992 | struct field *fp; | |
6993 | char *fieldname = ""; | |
6994 | ||
6995 | /* Allocate a new field list entry and link it in. */ | |
6996 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 6997 | make_cleanup (xfree, new_field); |
c906108c | 6998 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
6999 | |
7000 | if (die->tag == DW_TAG_inheritance) | |
7001 | { | |
7002 | new_field->next = fip->baseclasses; | |
7003 | fip->baseclasses = new_field; | |
7004 | } | |
7005 | else | |
7006 | { | |
7007 | new_field->next = fip->fields; | |
7008 | fip->fields = new_field; | |
7009 | } | |
c906108c SS |
7010 | fip->nfields++; |
7011 | ||
e142c38c | 7012 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
7013 | if (attr) |
7014 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
7015 | else |
7016 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
7017 | if (new_field->accessibility != DW_ACCESS_public) |
7018 | fip->non_public_fields = 1; | |
60d5a603 | 7019 | |
e142c38c | 7020 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
7021 | if (attr) |
7022 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
7023 | else |
7024 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
7025 | |
7026 | fp = &new_field->field; | |
a9a9bd0f | 7027 | |
e142c38c | 7028 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 7029 | { |
74ac6d43 TT |
7030 | LONGEST offset; |
7031 | ||
a9a9bd0f | 7032 | /* Data member other than a C++ static data member. */ |
6e70227d | 7033 | |
c906108c | 7034 | /* Get type of field. */ |
e7c27a73 | 7035 | fp->type = die_type (die, cu); |
c906108c | 7036 | |
d6a843b5 | 7037 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 7038 | |
c906108c | 7039 | /* Get bit size of field (zero if none). */ |
e142c38c | 7040 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
7041 | if (attr) |
7042 | { | |
7043 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
7044 | } | |
7045 | else | |
7046 | { | |
7047 | FIELD_BITSIZE (*fp) = 0; | |
7048 | } | |
7049 | ||
7050 | /* Get bit offset of field. */ | |
74ac6d43 TT |
7051 | if (handle_data_member_location (die, cu, &offset)) |
7052 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 7053 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
7054 | if (attr) |
7055 | { | |
5e2b427d | 7056 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
7057 | { |
7058 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
7059 | additional bit offset from the MSB of the containing |
7060 | anonymous object to the MSB of the field. We don't | |
7061 | have to do anything special since we don't need to | |
7062 | know the size of the anonymous object. */ | |
c906108c SS |
7063 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
7064 | } | |
7065 | else | |
7066 | { | |
7067 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
7068 | MSB of the anonymous object, subtract off the number of |
7069 | bits from the MSB of the field to the MSB of the | |
7070 | object, and then subtract off the number of bits of | |
7071 | the field itself. The result is the bit offset of | |
7072 | the LSB of the field. */ | |
c906108c SS |
7073 | int anonymous_size; |
7074 | int bit_offset = DW_UNSND (attr); | |
7075 | ||
e142c38c | 7076 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7077 | if (attr) |
7078 | { | |
7079 | /* The size of the anonymous object containing | |
7080 | the bit field is explicit, so use the | |
7081 | indicated size (in bytes). */ | |
7082 | anonymous_size = DW_UNSND (attr); | |
7083 | } | |
7084 | else | |
7085 | { | |
7086 | /* The size of the anonymous object containing | |
7087 | the bit field must be inferred from the type | |
7088 | attribute of the data member containing the | |
7089 | bit field. */ | |
7090 | anonymous_size = TYPE_LENGTH (fp->type); | |
7091 | } | |
7092 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
7093 | - bit_offset - FIELD_BITSIZE (*fp); | |
7094 | } | |
7095 | } | |
7096 | ||
7097 | /* Get name of field. */ | |
39cbfefa DJ |
7098 | fieldname = dwarf2_name (die, cu); |
7099 | if (fieldname == NULL) | |
7100 | fieldname = ""; | |
d8151005 DJ |
7101 | |
7102 | /* The name is already allocated along with this objfile, so we don't | |
7103 | need to duplicate it for the type. */ | |
7104 | fp->name = fieldname; | |
c906108c SS |
7105 | |
7106 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 7107 | pointer or virtual base class pointer) to private. */ |
e142c38c | 7108 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 7109 | { |
d48cc9dd | 7110 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
7111 | new_field->accessibility = DW_ACCESS_private; |
7112 | fip->non_public_fields = 1; | |
7113 | } | |
7114 | } | |
a9a9bd0f | 7115 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 7116 | { |
a9a9bd0f DC |
7117 | /* C++ static member. */ |
7118 | ||
7119 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
7120 | is a declaration, but all versions of G++ as of this writing | |
7121 | (so through at least 3.2.1) incorrectly generate | |
7122 | DW_TAG_variable tags. */ | |
6e70227d | 7123 | |
ff355380 | 7124 | const char *physname; |
c906108c | 7125 | |
a9a9bd0f | 7126 | /* Get name of field. */ |
39cbfefa DJ |
7127 | fieldname = dwarf2_name (die, cu); |
7128 | if (fieldname == NULL) | |
c906108c SS |
7129 | return; |
7130 | ||
254e6b9e | 7131 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
7132 | if (attr |
7133 | /* Only create a symbol if this is an external value. | |
7134 | new_symbol checks this and puts the value in the global symbol | |
7135 | table, which we want. If it is not external, new_symbol | |
7136 | will try to put the value in cu->list_in_scope which is wrong. */ | |
7137 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
7138 | { |
7139 | /* A static const member, not much different than an enum as far as | |
7140 | we're concerned, except that we can support more types. */ | |
7141 | new_symbol (die, NULL, cu); | |
7142 | } | |
7143 | ||
2df3850c | 7144 | /* Get physical name. */ |
ff355380 | 7145 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 7146 | |
d8151005 DJ |
7147 | /* The name is already allocated along with this objfile, so we don't |
7148 | need to duplicate it for the type. */ | |
7149 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 7150 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 7151 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
7152 | } |
7153 | else if (die->tag == DW_TAG_inheritance) | |
7154 | { | |
74ac6d43 | 7155 | LONGEST offset; |
d4b96c9a | 7156 | |
74ac6d43 TT |
7157 | /* C++ base class field. */ |
7158 | if (handle_data_member_location (die, cu, &offset)) | |
7159 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 7160 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 7161 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
7162 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
7163 | fip->nbaseclasses++; | |
7164 | } | |
7165 | } | |
7166 | ||
98751a41 JK |
7167 | /* Add a typedef defined in the scope of the FIP's class. */ |
7168 | ||
7169 | static void | |
7170 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
7171 | struct dwarf2_cu *cu) | |
6e70227d | 7172 | { |
98751a41 | 7173 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
7174 | struct typedef_field_list *new_field; |
7175 | struct attribute *attr; | |
7176 | struct typedef_field *fp; | |
7177 | char *fieldname = ""; | |
7178 | ||
7179 | /* Allocate a new field list entry and link it in. */ | |
7180 | new_field = xzalloc (sizeof (*new_field)); | |
7181 | make_cleanup (xfree, new_field); | |
7182 | ||
7183 | gdb_assert (die->tag == DW_TAG_typedef); | |
7184 | ||
7185 | fp = &new_field->field; | |
7186 | ||
7187 | /* Get name of field. */ | |
7188 | fp->name = dwarf2_name (die, cu); | |
7189 | if (fp->name == NULL) | |
7190 | return; | |
7191 | ||
7192 | fp->type = read_type_die (die, cu); | |
7193 | ||
7194 | new_field->next = fip->typedef_field_list; | |
7195 | fip->typedef_field_list = new_field; | |
7196 | fip->typedef_field_list_count++; | |
7197 | } | |
7198 | ||
c906108c SS |
7199 | /* Create the vector of fields, and attach it to the type. */ |
7200 | ||
7201 | static void | |
fba45db2 | 7202 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 7203 | struct dwarf2_cu *cu) |
c906108c SS |
7204 | { |
7205 | int nfields = fip->nfields; | |
7206 | ||
7207 | /* Record the field count, allocate space for the array of fields, | |
7208 | and create blank accessibility bitfields if necessary. */ | |
7209 | TYPE_NFIELDS (type) = nfields; | |
7210 | TYPE_FIELDS (type) = (struct field *) | |
7211 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
7212 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
7213 | ||
b4ba55a1 | 7214 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
7215 | { |
7216 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
7217 | ||
7218 | TYPE_FIELD_PRIVATE_BITS (type) = | |
7219 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
7220 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
7221 | ||
7222 | TYPE_FIELD_PROTECTED_BITS (type) = | |
7223 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
7224 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
7225 | ||
774b6a14 TT |
7226 | TYPE_FIELD_IGNORE_BITS (type) = |
7227 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
7228 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
7229 | } |
7230 | ||
7231 | /* If the type has baseclasses, allocate and clear a bit vector for | |
7232 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 7233 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
7234 | { |
7235 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 7236 | unsigned char *pointer; |
c906108c SS |
7237 | |
7238 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
7239 | pointer = TYPE_ALLOC (type, num_bytes); |
7240 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
7241 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
7242 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
7243 | } | |
7244 | ||
3e43a32a MS |
7245 | /* Copy the saved-up fields into the field vector. Start from the head of |
7246 | the list, adding to the tail of the field array, so that they end up in | |
7247 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
7248 | while (nfields-- > 0) |
7249 | { | |
7d0ccb61 DJ |
7250 | struct nextfield *fieldp; |
7251 | ||
7252 | if (fip->fields) | |
7253 | { | |
7254 | fieldp = fip->fields; | |
7255 | fip->fields = fieldp->next; | |
7256 | } | |
7257 | else | |
7258 | { | |
7259 | fieldp = fip->baseclasses; | |
7260 | fip->baseclasses = fieldp->next; | |
7261 | } | |
7262 | ||
7263 | TYPE_FIELD (type, nfields) = fieldp->field; | |
7264 | switch (fieldp->accessibility) | |
c906108c | 7265 | { |
c5aa993b | 7266 | case DW_ACCESS_private: |
b4ba55a1 JB |
7267 | if (cu->language != language_ada) |
7268 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 7269 | break; |
c906108c | 7270 | |
c5aa993b | 7271 | case DW_ACCESS_protected: |
b4ba55a1 JB |
7272 | if (cu->language != language_ada) |
7273 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 7274 | break; |
c906108c | 7275 | |
c5aa993b JM |
7276 | case DW_ACCESS_public: |
7277 | break; | |
c906108c | 7278 | |
c5aa993b JM |
7279 | default: |
7280 | /* Unknown accessibility. Complain and treat it as public. */ | |
7281 | { | |
e2e0b3e5 | 7282 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 7283 | fieldp->accessibility); |
c5aa993b JM |
7284 | } |
7285 | break; | |
c906108c SS |
7286 | } |
7287 | if (nfields < fip->nbaseclasses) | |
7288 | { | |
7d0ccb61 | 7289 | switch (fieldp->virtuality) |
c906108c | 7290 | { |
c5aa993b JM |
7291 | case DW_VIRTUALITY_virtual: |
7292 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 7293 | if (cu->language == language_ada) |
a73c6dcd | 7294 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
7295 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
7296 | break; | |
c906108c SS |
7297 | } |
7298 | } | |
c906108c SS |
7299 | } |
7300 | } | |
7301 | ||
c906108c SS |
7302 | /* Add a member function to the proper fieldlist. */ |
7303 | ||
7304 | static void | |
107d2387 | 7305 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 7306 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 7307 | { |
e7c27a73 | 7308 | struct objfile *objfile = cu->objfile; |
c906108c SS |
7309 | struct attribute *attr; |
7310 | struct fnfieldlist *flp; | |
7311 | int i; | |
7312 | struct fn_field *fnp; | |
7313 | char *fieldname; | |
c906108c | 7314 | struct nextfnfield *new_fnfield; |
f792889a | 7315 | struct type *this_type; |
60d5a603 | 7316 | enum dwarf_access_attribute accessibility; |
c906108c | 7317 | |
b4ba55a1 | 7318 | if (cu->language == language_ada) |
a73c6dcd | 7319 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 7320 | |
2df3850c | 7321 | /* Get name of member function. */ |
39cbfefa DJ |
7322 | fieldname = dwarf2_name (die, cu); |
7323 | if (fieldname == NULL) | |
2df3850c | 7324 | return; |
c906108c | 7325 | |
c906108c SS |
7326 | /* Look up member function name in fieldlist. */ |
7327 | for (i = 0; i < fip->nfnfields; i++) | |
7328 | { | |
27bfe10e | 7329 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
7330 | break; |
7331 | } | |
7332 | ||
7333 | /* Create new list element if necessary. */ | |
7334 | if (i < fip->nfnfields) | |
7335 | flp = &fip->fnfieldlists[i]; | |
7336 | else | |
7337 | { | |
7338 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
7339 | { | |
7340 | fip->fnfieldlists = (struct fnfieldlist *) | |
7341 | xrealloc (fip->fnfieldlists, | |
7342 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 7343 | * sizeof (struct fnfieldlist)); |
c906108c | 7344 | if (fip->nfnfields == 0) |
c13c43fd | 7345 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
7346 | } |
7347 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
7348 | flp->name = fieldname; | |
7349 | flp->length = 0; | |
7350 | flp->head = NULL; | |
3da10d80 | 7351 | i = fip->nfnfields++; |
c906108c SS |
7352 | } |
7353 | ||
7354 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 7355 | entry. */ |
c906108c | 7356 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 7357 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
7358 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
7359 | new_fnfield->next = flp->head; | |
7360 | flp->head = new_fnfield; | |
7361 | flp->length++; | |
7362 | ||
7363 | /* Fill in the member function field info. */ | |
7364 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
7365 | |
7366 | /* Delay processing of the physname until later. */ | |
7367 | if (cu->language == language_cplus || cu->language == language_java) | |
7368 | { | |
7369 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
7370 | die, cu); | |
7371 | } | |
7372 | else | |
7373 | { | |
1d06ead6 | 7374 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
7375 | fnp->physname = physname ? physname : ""; |
7376 | } | |
7377 | ||
c906108c | 7378 | fnp->type = alloc_type (objfile); |
f792889a DJ |
7379 | this_type = read_type_die (die, cu); |
7380 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 7381 | { |
f792889a | 7382 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 7383 | |
f792889a | 7384 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
7385 | of the method itself (TYPE_CODE_METHOD). */ |
7386 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
7387 | TYPE_TARGET_TYPE (this_type), |
7388 | TYPE_FIELDS (this_type), | |
7389 | TYPE_NFIELDS (this_type), | |
7390 | TYPE_VARARGS (this_type)); | |
c906108c SS |
7391 | |
7392 | /* Handle static member functions. | |
c5aa993b | 7393 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
7394 | member functions. G++ helps GDB by marking the first |
7395 | parameter for non-static member functions (which is the this | |
7396 | pointer) as artificial. We obtain this information from | |
7397 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 7398 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
7399 | fnp->voffset = VOFFSET_STATIC; |
7400 | } | |
7401 | else | |
e2e0b3e5 | 7402 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 7403 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
7404 | |
7405 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 7406 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 7407 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 7408 | |
3e43a32a MS |
7409 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
7410 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
7411 | |
7412 | /* Get accessibility. */ | |
e142c38c | 7413 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 7414 | if (attr) |
60d5a603 JK |
7415 | accessibility = DW_UNSND (attr); |
7416 | else | |
7417 | accessibility = dwarf2_default_access_attribute (die, cu); | |
7418 | switch (accessibility) | |
c906108c | 7419 | { |
60d5a603 JK |
7420 | case DW_ACCESS_private: |
7421 | fnp->is_private = 1; | |
7422 | break; | |
7423 | case DW_ACCESS_protected: | |
7424 | fnp->is_protected = 1; | |
7425 | break; | |
c906108c SS |
7426 | } |
7427 | ||
b02dede2 | 7428 | /* Check for artificial methods. */ |
e142c38c | 7429 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
7430 | if (attr && DW_UNSND (attr) != 0) |
7431 | fnp->is_artificial = 1; | |
7432 | ||
0d564a31 | 7433 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
7434 | function. For older versions of GCC, this is an offset in the |
7435 | appropriate virtual table, as specified by DW_AT_containing_type. | |
7436 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
7437 | to the object address. */ |
7438 | ||
e142c38c | 7439 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 7440 | if (attr) |
8e19ed76 | 7441 | { |
aec5aa8b | 7442 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 7443 | { |
aec5aa8b TT |
7444 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
7445 | { | |
7446 | /* Old-style GCC. */ | |
7447 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
7448 | } | |
7449 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
7450 | || (DW_BLOCK (attr)->size > 1 | |
7451 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
7452 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
7453 | { | |
7454 | struct dwarf_block blk; | |
7455 | int offset; | |
7456 | ||
7457 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
7458 | ? 1 : 2); | |
7459 | blk.size = DW_BLOCK (attr)->size - offset; | |
7460 | blk.data = DW_BLOCK (attr)->data + offset; | |
7461 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
7462 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
7463 | dwarf2_complex_location_expr_complaint (); | |
7464 | else | |
7465 | fnp->voffset /= cu->header.addr_size; | |
7466 | fnp->voffset += 2; | |
7467 | } | |
7468 | else | |
7469 | dwarf2_complex_location_expr_complaint (); | |
7470 | ||
7471 | if (!fnp->fcontext) | |
7472 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
7473 | } | |
3690dd37 | 7474 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 7475 | { |
4d3c2250 | 7476 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
7477 | } |
7478 | else | |
7479 | { | |
4d3c2250 KB |
7480 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
7481 | fieldname); | |
8e19ed76 | 7482 | } |
0d564a31 | 7483 | } |
d48cc9dd DJ |
7484 | else |
7485 | { | |
7486 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
7487 | if (attr && DW_UNSND (attr)) | |
7488 | { | |
7489 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
7490 | complaint (&symfile_complaints, | |
3e43a32a MS |
7491 | _("Member function \"%s\" (offset %d) is virtual " |
7492 | "but the vtable offset is not specified"), | |
d48cc9dd | 7493 | fieldname, die->offset); |
9655fd1a | 7494 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
7495 | TYPE_CPLUS_DYNAMIC (type) = 1; |
7496 | } | |
7497 | } | |
c906108c SS |
7498 | } |
7499 | ||
7500 | /* Create the vector of member function fields, and attach it to the type. */ | |
7501 | ||
7502 | static void | |
fba45db2 | 7503 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 7504 | struct dwarf2_cu *cu) |
c906108c SS |
7505 | { |
7506 | struct fnfieldlist *flp; | |
7507 | int total_length = 0; | |
7508 | int i; | |
7509 | ||
b4ba55a1 | 7510 | if (cu->language == language_ada) |
a73c6dcd | 7511 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 7512 | |
c906108c SS |
7513 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
7514 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
7515 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
7516 | ||
7517 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
7518 | { | |
7519 | struct nextfnfield *nfp = flp->head; | |
7520 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
7521 | int k; | |
7522 | ||
7523 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
7524 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
7525 | fn_flp->fn_fields = (struct fn_field *) | |
7526 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
7527 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 7528 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
7529 | |
7530 | total_length += flp->length; | |
7531 | } | |
7532 | ||
7533 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
7534 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
7535 | } | |
7536 | ||
1168df01 JB |
7537 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
7538 | language, zero otherwise. */ | |
7539 | static int | |
7540 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
7541 | { | |
7542 | static const char vptr[] = "_vptr"; | |
987504bb | 7543 | static const char vtable[] = "vtable"; |
1168df01 | 7544 | |
987504bb JJ |
7545 | /* Look for the C++ and Java forms of the vtable. */ |
7546 | if ((cu->language == language_java | |
7547 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
7548 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
7549 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
7550 | return 1; |
7551 | ||
7552 | return 0; | |
7553 | } | |
7554 | ||
c0dd20ea | 7555 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
7556 | functions, with the ABI-specified layout. If TYPE describes |
7557 | such a structure, smash it into a member function type. | |
61049d3b DJ |
7558 | |
7559 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
7560 | This is GCC PR debug/28767. */ | |
c0dd20ea | 7561 | |
0b92b5bb TT |
7562 | static void |
7563 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 7564 | { |
0b92b5bb | 7565 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
7566 | |
7567 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
7568 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
7569 | return; | |
c0dd20ea DJ |
7570 | |
7571 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
7572 | if (TYPE_FIELD_NAME (type, 0) == NULL |
7573 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
7574 | || TYPE_FIELD_NAME (type, 1) == NULL | |
7575 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
7576 | return; | |
c0dd20ea DJ |
7577 | |
7578 | /* Find the type of the method. */ | |
0b92b5bb | 7579 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
7580 | if (pfn_type == NULL |
7581 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
7582 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 7583 | return; |
c0dd20ea DJ |
7584 | |
7585 | /* Look for the "this" argument. */ | |
7586 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
7587 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 7588 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 7589 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 7590 | return; |
c0dd20ea DJ |
7591 | |
7592 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
7593 | new_type = alloc_type (objfile); |
7594 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
7595 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
7596 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 7597 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 7598 | } |
1168df01 | 7599 | |
c906108c | 7600 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
7601 | (definition) to create a type for the structure or union. Fill in |
7602 | the type's name and general properties; the members will not be | |
7603 | processed until process_structure_type. | |
c906108c | 7604 | |
c767944b DJ |
7605 | NOTE: we need to call these functions regardless of whether or not the |
7606 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
7607 | structure or union. This gets the type entered into our set of |
7608 | user defined types. | |
7609 | ||
7610 | However, if the structure is incomplete (an opaque struct/union) | |
7611 | then suppress creating a symbol table entry for it since gdb only | |
7612 | wants to find the one with the complete definition. Note that if | |
7613 | it is complete, we just call new_symbol, which does it's own | |
7614 | checking about whether the struct/union is anonymous or not (and | |
7615 | suppresses creating a symbol table entry itself). */ | |
7616 | ||
f792889a | 7617 | static struct type * |
134d01f1 | 7618 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7619 | { |
e7c27a73 | 7620 | struct objfile *objfile = cu->objfile; |
c906108c SS |
7621 | struct type *type; |
7622 | struct attribute *attr; | |
39cbfefa | 7623 | char *name; |
c906108c | 7624 | |
348e048f DE |
7625 | /* If the definition of this type lives in .debug_types, read that type. |
7626 | Don't follow DW_AT_specification though, that will take us back up | |
7627 | the chain and we want to go down. */ | |
7628 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
7629 | if (attr) | |
7630 | { | |
7631 | struct dwarf2_cu *type_cu = cu; | |
7632 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 7633 | |
348e048f DE |
7634 | /* We could just recurse on read_structure_type, but we need to call |
7635 | get_die_type to ensure only one type for this DIE is created. | |
7636 | This is important, for example, because for c++ classes we need | |
7637 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
7638 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
7639 | |
7640 | /* TYPE_CU may not be the same as CU. | |
7641 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
7642 | return set_die_type (die, type, cu); |
7643 | } | |
7644 | ||
c0dd20ea | 7645 | type = alloc_type (objfile); |
c906108c | 7646 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 7647 | |
39cbfefa DJ |
7648 | name = dwarf2_name (die, cu); |
7649 | if (name != NULL) | |
c906108c | 7650 | { |
987504bb JJ |
7651 | if (cu->language == language_cplus |
7652 | || cu->language == language_java) | |
63d06c5c | 7653 | { |
3da10d80 KS |
7654 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
7655 | ||
7656 | /* dwarf2_full_name might have already finished building the DIE's | |
7657 | type. If so, there is no need to continue. */ | |
7658 | if (get_die_type (die, cu) != NULL) | |
7659 | return get_die_type (die, cu); | |
7660 | ||
7661 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
7662 | if (die->tag == DW_TAG_structure_type |
7663 | || die->tag == DW_TAG_class_type) | |
7664 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
7665 | } |
7666 | else | |
7667 | { | |
d8151005 DJ |
7668 | /* The name is already allocated along with this objfile, so |
7669 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
7670 | TYPE_TAG_NAME (type) = (char *) name; |
7671 | if (die->tag == DW_TAG_class_type) | |
7672 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 7673 | } |
c906108c SS |
7674 | } |
7675 | ||
7676 | if (die->tag == DW_TAG_structure_type) | |
7677 | { | |
7678 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
7679 | } | |
7680 | else if (die->tag == DW_TAG_union_type) | |
7681 | { | |
7682 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
7683 | } | |
7684 | else | |
7685 | { | |
c906108c SS |
7686 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
7687 | } | |
7688 | ||
0cc2414c TT |
7689 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
7690 | TYPE_DECLARED_CLASS (type) = 1; | |
7691 | ||
e142c38c | 7692 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7693 | if (attr) |
7694 | { | |
7695 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7696 | } | |
7697 | else | |
7698 | { | |
7699 | TYPE_LENGTH (type) = 0; | |
7700 | } | |
7701 | ||
876cecd0 | 7702 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 7703 | if (die_is_declaration (die, cu)) |
876cecd0 | 7704 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
7705 | else if (attr == NULL && die->child == NULL |
7706 | && producer_is_realview (cu->producer)) | |
7707 | /* RealView does not output the required DW_AT_declaration | |
7708 | on incomplete types. */ | |
7709 | TYPE_STUB (type) = 1; | |
dc718098 | 7710 | |
c906108c SS |
7711 | /* We need to add the type field to the die immediately so we don't |
7712 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 7713 | type within the structure itself. */ |
1c379e20 | 7714 | set_die_type (die, type, cu); |
c906108c | 7715 | |
7e314c57 JK |
7716 | /* set_die_type should be already done. */ |
7717 | set_descriptive_type (type, die, cu); | |
7718 | ||
c767944b DJ |
7719 | return type; |
7720 | } | |
7721 | ||
7722 | /* Finish creating a structure or union type, including filling in | |
7723 | its members and creating a symbol for it. */ | |
7724 | ||
7725 | static void | |
7726 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7727 | { | |
7728 | struct objfile *objfile = cu->objfile; | |
7729 | struct die_info *child_die = die->child; | |
7730 | struct type *type; | |
7731 | ||
7732 | type = get_die_type (die, cu); | |
7733 | if (type == NULL) | |
7734 | type = read_structure_type (die, cu); | |
7735 | ||
e142c38c | 7736 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
7737 | { |
7738 | struct field_info fi; | |
7739 | struct die_info *child_die; | |
34eaf542 | 7740 | VEC (symbolp) *template_args = NULL; |
c767944b | 7741 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
7742 | |
7743 | memset (&fi, 0, sizeof (struct field_info)); | |
7744 | ||
639d11d3 | 7745 | child_die = die->child; |
c906108c SS |
7746 | |
7747 | while (child_die && child_die->tag) | |
7748 | { | |
a9a9bd0f DC |
7749 | if (child_die->tag == DW_TAG_member |
7750 | || child_die->tag == DW_TAG_variable) | |
c906108c | 7751 | { |
a9a9bd0f DC |
7752 | /* NOTE: carlton/2002-11-05: A C++ static data member |
7753 | should be a DW_TAG_member that is a declaration, but | |
7754 | all versions of G++ as of this writing (so through at | |
7755 | least 3.2.1) incorrectly generate DW_TAG_variable | |
7756 | tags for them instead. */ | |
e7c27a73 | 7757 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 7758 | } |
8713b1b1 | 7759 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 7760 | { |
0963b4bd | 7761 | /* C++ member function. */ |
e7c27a73 | 7762 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
7763 | } |
7764 | else if (child_die->tag == DW_TAG_inheritance) | |
7765 | { | |
7766 | /* C++ base class field. */ | |
e7c27a73 | 7767 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 7768 | } |
98751a41 JK |
7769 | else if (child_die->tag == DW_TAG_typedef) |
7770 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
7771 | else if (child_die->tag == DW_TAG_template_type_param |
7772 | || child_die->tag == DW_TAG_template_value_param) | |
7773 | { | |
7774 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
7775 | ||
f1078f66 DJ |
7776 | if (arg != NULL) |
7777 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
7778 | } |
7779 | ||
c906108c SS |
7780 | child_die = sibling_die (child_die); |
7781 | } | |
7782 | ||
34eaf542 TT |
7783 | /* Attach template arguments to type. */ |
7784 | if (! VEC_empty (symbolp, template_args)) | |
7785 | { | |
7786 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
7787 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7788 | = VEC_length (symbolp, template_args); | |
7789 | TYPE_TEMPLATE_ARGUMENTS (type) | |
7790 | = obstack_alloc (&objfile->objfile_obstack, | |
7791 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7792 | * sizeof (struct symbol *))); | |
7793 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
7794 | VEC_address (symbolp, template_args), | |
7795 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7796 | * sizeof (struct symbol *))); | |
7797 | VEC_free (symbolp, template_args); | |
7798 | } | |
7799 | ||
c906108c SS |
7800 | /* Attach fields and member functions to the type. */ |
7801 | if (fi.nfields) | |
e7c27a73 | 7802 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
7803 | if (fi.nfnfields) |
7804 | { | |
e7c27a73 | 7805 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 7806 | |
c5aa993b | 7807 | /* Get the type which refers to the base class (possibly this |
c906108c | 7808 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
7809 | class from the DW_AT_containing_type attribute. This use of |
7810 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 7811 | |
e142c38c | 7812 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 7813 | { |
e7c27a73 | 7814 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
7815 | |
7816 | TYPE_VPTR_BASETYPE (type) = t; | |
7817 | if (type == t) | |
7818 | { | |
c906108c SS |
7819 | int i; |
7820 | ||
7821 | /* Our own class provides vtbl ptr. */ | |
7822 | for (i = TYPE_NFIELDS (t) - 1; | |
7823 | i >= TYPE_N_BASECLASSES (t); | |
7824 | --i) | |
7825 | { | |
7826 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
7827 | ||
1168df01 | 7828 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
7829 | { |
7830 | TYPE_VPTR_FIELDNO (type) = i; | |
7831 | break; | |
7832 | } | |
7833 | } | |
7834 | ||
7835 | /* Complain if virtual function table field not found. */ | |
7836 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 7837 | complaint (&symfile_complaints, |
3e43a32a MS |
7838 | _("virtual function table pointer " |
7839 | "not found when defining class '%s'"), | |
4d3c2250 KB |
7840 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
7841 | ""); | |
c906108c SS |
7842 | } |
7843 | else | |
7844 | { | |
7845 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
7846 | } | |
7847 | } | |
f6235d4c EZ |
7848 | else if (cu->producer |
7849 | && strncmp (cu->producer, | |
7850 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
7851 | { | |
7852 | /* The IBM XLC compiler does not provide direct indication | |
7853 | of the containing type, but the vtable pointer is | |
7854 | always named __vfp. */ | |
7855 | ||
7856 | int i; | |
7857 | ||
7858 | for (i = TYPE_NFIELDS (type) - 1; | |
7859 | i >= TYPE_N_BASECLASSES (type); | |
7860 | --i) | |
7861 | { | |
7862 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
7863 | { | |
7864 | TYPE_VPTR_FIELDNO (type) = i; | |
7865 | TYPE_VPTR_BASETYPE (type) = type; | |
7866 | break; | |
7867 | } | |
7868 | } | |
7869 | } | |
c906108c | 7870 | } |
98751a41 JK |
7871 | |
7872 | /* Copy fi.typedef_field_list linked list elements content into the | |
7873 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
7874 | if (fi.typedef_field_list) | |
7875 | { | |
7876 | int i = fi.typedef_field_list_count; | |
7877 | ||
a0d7a4ff | 7878 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
7879 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
7880 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
7881 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
7882 | ||
7883 | /* Reverse the list order to keep the debug info elements order. */ | |
7884 | while (--i >= 0) | |
7885 | { | |
7886 | struct typedef_field *dest, *src; | |
6e70227d | 7887 | |
98751a41 JK |
7888 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
7889 | src = &fi.typedef_field_list->field; | |
7890 | fi.typedef_field_list = fi.typedef_field_list->next; | |
7891 | *dest = *src; | |
7892 | } | |
7893 | } | |
c767944b DJ |
7894 | |
7895 | do_cleanups (back_to); | |
eb2a6f42 TT |
7896 | |
7897 | if (HAVE_CPLUS_STRUCT (type)) | |
7898 | TYPE_CPLUS_REALLY_JAVA (type) = cu->language == language_java; | |
c906108c | 7899 | } |
63d06c5c | 7900 | |
bb5ed363 | 7901 | quirk_gcc_member_function_pointer (type, objfile); |
0b92b5bb | 7902 | |
90aeadfc DC |
7903 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
7904 | snapshots) has been known to create a die giving a declaration | |
7905 | for a class that has, as a child, a die giving a definition for a | |
7906 | nested class. So we have to process our children even if the | |
7907 | current die is a declaration. Normally, of course, a declaration | |
7908 | won't have any children at all. */ | |
134d01f1 | 7909 | |
90aeadfc DC |
7910 | while (child_die != NULL && child_die->tag) |
7911 | { | |
7912 | if (child_die->tag == DW_TAG_member | |
7913 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
7914 | || child_die->tag == DW_TAG_inheritance |
7915 | || child_die->tag == DW_TAG_template_value_param | |
7916 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 7917 | { |
90aeadfc | 7918 | /* Do nothing. */ |
134d01f1 | 7919 | } |
90aeadfc DC |
7920 | else |
7921 | process_die (child_die, cu); | |
134d01f1 | 7922 | |
90aeadfc | 7923 | child_die = sibling_die (child_die); |
134d01f1 DJ |
7924 | } |
7925 | ||
fa4028e9 JB |
7926 | /* Do not consider external references. According to the DWARF standard, |
7927 | these DIEs are identified by the fact that they have no byte_size | |
7928 | attribute, and a declaration attribute. */ | |
7929 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
7930 | || !die_is_declaration (die, cu)) | |
c767944b | 7931 | new_symbol (die, type, cu); |
134d01f1 DJ |
7932 | } |
7933 | ||
7934 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
7935 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 7936 | |
f792889a | 7937 | static struct type * |
134d01f1 | 7938 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7939 | { |
e7c27a73 | 7940 | struct objfile *objfile = cu->objfile; |
c906108c | 7941 | struct type *type; |
c906108c | 7942 | struct attribute *attr; |
0114d602 | 7943 | const char *name; |
134d01f1 | 7944 | |
348e048f DE |
7945 | /* If the definition of this type lives in .debug_types, read that type. |
7946 | Don't follow DW_AT_specification though, that will take us back up | |
7947 | the chain and we want to go down. */ | |
7948 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
7949 | if (attr) | |
7950 | { | |
7951 | struct dwarf2_cu *type_cu = cu; | |
7952 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 7953 | |
348e048f | 7954 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
7955 | |
7956 | /* TYPE_CU may not be the same as CU. | |
7957 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
7958 | return set_die_type (die, type, cu); |
7959 | } | |
7960 | ||
c906108c SS |
7961 | type = alloc_type (objfile); |
7962 | ||
7963 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 7964 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 7965 | if (name != NULL) |
0114d602 | 7966 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 7967 | |
e142c38c | 7968 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7969 | if (attr) |
7970 | { | |
7971 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7972 | } | |
7973 | else | |
7974 | { | |
7975 | TYPE_LENGTH (type) = 0; | |
7976 | } | |
7977 | ||
137033e9 JB |
7978 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
7979 | declared as private in the package spec, and then defined only | |
7980 | inside the package body. Such types are known as Taft Amendment | |
7981 | Types. When another package uses such a type, an incomplete DIE | |
7982 | may be generated by the compiler. */ | |
02eb380e | 7983 | if (die_is_declaration (die, cu)) |
876cecd0 | 7984 | TYPE_STUB (type) = 1; |
02eb380e | 7985 | |
f792889a | 7986 | return set_die_type (die, type, cu); |
134d01f1 DJ |
7987 | } |
7988 | ||
7989 | /* Given a pointer to a die which begins an enumeration, process all | |
7990 | the dies that define the members of the enumeration, and create the | |
7991 | symbol for the enumeration type. | |
7992 | ||
7993 | NOTE: We reverse the order of the element list. */ | |
7994 | ||
7995 | static void | |
7996 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7997 | { | |
f792889a | 7998 | struct type *this_type; |
134d01f1 | 7999 | |
f792889a DJ |
8000 | this_type = get_die_type (die, cu); |
8001 | if (this_type == NULL) | |
8002 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 8003 | |
639d11d3 | 8004 | if (die->child != NULL) |
c906108c | 8005 | { |
9dc481d3 DE |
8006 | struct die_info *child_die; |
8007 | struct symbol *sym; | |
8008 | struct field *fields = NULL; | |
8009 | int num_fields = 0; | |
8010 | int unsigned_enum = 1; | |
8011 | char *name; | |
8012 | ||
639d11d3 | 8013 | child_die = die->child; |
c906108c SS |
8014 | while (child_die && child_die->tag) |
8015 | { | |
8016 | if (child_die->tag != DW_TAG_enumerator) | |
8017 | { | |
e7c27a73 | 8018 | process_die (child_die, cu); |
c906108c SS |
8019 | } |
8020 | else | |
8021 | { | |
39cbfefa DJ |
8022 | name = dwarf2_name (child_die, cu); |
8023 | if (name) | |
c906108c | 8024 | { |
f792889a | 8025 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
8026 | if (SYMBOL_VALUE (sym) < 0) |
8027 | unsigned_enum = 0; | |
8028 | ||
8029 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
8030 | { | |
8031 | fields = (struct field *) | |
8032 | xrealloc (fields, | |
8033 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 8034 | * sizeof (struct field)); |
c906108c SS |
8035 | } |
8036 | ||
3567439c | 8037 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 8038 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 8039 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
8040 | FIELD_BITSIZE (fields[num_fields]) = 0; |
8041 | ||
8042 | num_fields++; | |
8043 | } | |
8044 | } | |
8045 | ||
8046 | child_die = sibling_die (child_die); | |
8047 | } | |
8048 | ||
8049 | if (num_fields) | |
8050 | { | |
f792889a DJ |
8051 | TYPE_NFIELDS (this_type) = num_fields; |
8052 | TYPE_FIELDS (this_type) = (struct field *) | |
8053 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
8054 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 8055 | sizeof (struct field) * num_fields); |
b8c9b27d | 8056 | xfree (fields); |
c906108c SS |
8057 | } |
8058 | if (unsigned_enum) | |
876cecd0 | 8059 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 8060 | } |
134d01f1 | 8061 | |
6c83ed52 TT |
8062 | /* If we are reading an enum from a .debug_types unit, and the enum |
8063 | is a declaration, and the enum is not the signatured type in the | |
8064 | unit, then we do not want to add a symbol for it. Adding a | |
8065 | symbol would in some cases obscure the true definition of the | |
8066 | enum, giving users an incomplete type when the definition is | |
8067 | actually available. Note that we do not want to do this for all | |
8068 | enums which are just declarations, because C++0x allows forward | |
8069 | enum declarations. */ | |
b0df02fd | 8070 | if (cu->per_cu->debug_types_section |
6c83ed52 TT |
8071 | && die_is_declaration (die, cu)) |
8072 | { | |
8073 | struct signatured_type *type_sig; | |
8074 | ||
8075 | type_sig | |
8076 | = lookup_signatured_type_at_offset (dwarf2_per_objfile->objfile, | |
b0df02fd | 8077 | cu->per_cu->debug_types_section, |
6c83ed52 TT |
8078 | cu->per_cu->offset); |
8079 | if (type_sig->type_offset != die->offset) | |
8080 | return; | |
8081 | } | |
8082 | ||
f792889a | 8083 | new_symbol (die, this_type, cu); |
c906108c SS |
8084 | } |
8085 | ||
8086 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
8087 | the DIE's type field. For now, this only handles one dimensional | |
8088 | arrays. */ | |
8089 | ||
f792889a | 8090 | static struct type * |
e7c27a73 | 8091 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8092 | { |
e7c27a73 | 8093 | struct objfile *objfile = cu->objfile; |
c906108c | 8094 | struct die_info *child_die; |
7e314c57 | 8095 | struct type *type; |
c906108c SS |
8096 | struct type *element_type, *range_type, *index_type; |
8097 | struct type **range_types = NULL; | |
8098 | struct attribute *attr; | |
8099 | int ndim = 0; | |
8100 | struct cleanup *back_to; | |
39cbfefa | 8101 | char *name; |
c906108c | 8102 | |
e7c27a73 | 8103 | element_type = die_type (die, cu); |
c906108c | 8104 | |
7e314c57 JK |
8105 | /* The die_type call above may have already set the type for this DIE. */ |
8106 | type = get_die_type (die, cu); | |
8107 | if (type) | |
8108 | return type; | |
8109 | ||
c906108c SS |
8110 | /* Irix 6.2 native cc creates array types without children for |
8111 | arrays with unspecified length. */ | |
639d11d3 | 8112 | if (die->child == NULL) |
c906108c | 8113 | { |
46bf5051 | 8114 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 8115 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
8116 | type = create_array_type (NULL, element_type, range_type); |
8117 | return set_die_type (die, type, cu); | |
c906108c SS |
8118 | } |
8119 | ||
8120 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 8121 | child_die = die->child; |
c906108c SS |
8122 | while (child_die && child_die->tag) |
8123 | { | |
8124 | if (child_die->tag == DW_TAG_subrange_type) | |
8125 | { | |
f792889a | 8126 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 8127 | |
f792889a | 8128 | if (child_type != NULL) |
a02abb62 | 8129 | { |
0963b4bd MS |
8130 | /* The range type was succesfully read. Save it for the |
8131 | array type creation. */ | |
a02abb62 JB |
8132 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
8133 | { | |
8134 | range_types = (struct type **) | |
8135 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
8136 | * sizeof (struct type *)); | |
8137 | if (ndim == 0) | |
8138 | make_cleanup (free_current_contents, &range_types); | |
8139 | } | |
f792889a | 8140 | range_types[ndim++] = child_type; |
a02abb62 | 8141 | } |
c906108c SS |
8142 | } |
8143 | child_die = sibling_die (child_die); | |
8144 | } | |
8145 | ||
8146 | /* Dwarf2 dimensions are output from left to right, create the | |
8147 | necessary array types in backwards order. */ | |
7ca2d3a3 | 8148 | |
c906108c | 8149 | type = element_type; |
7ca2d3a3 DL |
8150 | |
8151 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
8152 | { | |
8153 | int i = 0; | |
9a619af0 | 8154 | |
7ca2d3a3 DL |
8155 | while (i < ndim) |
8156 | type = create_array_type (NULL, type, range_types[i++]); | |
8157 | } | |
8158 | else | |
8159 | { | |
8160 | while (ndim-- > 0) | |
8161 | type = create_array_type (NULL, type, range_types[ndim]); | |
8162 | } | |
c906108c | 8163 | |
f5f8a009 EZ |
8164 | /* Understand Dwarf2 support for vector types (like they occur on |
8165 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
8166 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
8167 | custom vendor extension. The main difference between a regular | |
8168 | array and the vector variant is that vectors are passed by value | |
8169 | to functions. */ | |
e142c38c | 8170 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 8171 | if (attr) |
ea37ba09 | 8172 | make_vector_type (type); |
f5f8a009 | 8173 | |
dbc98a8b KW |
8174 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
8175 | implementation may choose to implement triple vectors using this | |
8176 | attribute. */ | |
8177 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
8178 | if (attr) | |
8179 | { | |
8180 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
8181 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
8182 | else | |
3e43a32a MS |
8183 | complaint (&symfile_complaints, |
8184 | _("DW_AT_byte_size for array type smaller " | |
8185 | "than the total size of elements")); | |
dbc98a8b KW |
8186 | } |
8187 | ||
39cbfefa DJ |
8188 | name = dwarf2_name (die, cu); |
8189 | if (name) | |
8190 | TYPE_NAME (type) = name; | |
6e70227d | 8191 | |
0963b4bd | 8192 | /* Install the type in the die. */ |
7e314c57 JK |
8193 | set_die_type (die, type, cu); |
8194 | ||
8195 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
8196 | set_descriptive_type (type, die, cu); |
8197 | ||
c906108c SS |
8198 | do_cleanups (back_to); |
8199 | ||
7e314c57 | 8200 | return type; |
c906108c SS |
8201 | } |
8202 | ||
7ca2d3a3 | 8203 | static enum dwarf_array_dim_ordering |
6e70227d | 8204 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
8205 | { |
8206 | struct attribute *attr; | |
8207 | ||
8208 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
8209 | ||
8210 | if (attr) return DW_SND (attr); | |
8211 | ||
0963b4bd MS |
8212 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
8213 | opposite order to the dwarf2 specification, but data is still | |
8214 | laid out as per normal fortran. | |
7ca2d3a3 | 8215 | |
0963b4bd MS |
8216 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
8217 | version checking. */ | |
7ca2d3a3 | 8218 | |
905e0470 PM |
8219 | if (cu->language == language_fortran |
8220 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
8221 | { |
8222 | return DW_ORD_row_major; | |
8223 | } | |
8224 | ||
6e70227d | 8225 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
8226 | { |
8227 | case array_column_major: | |
8228 | return DW_ORD_col_major; | |
8229 | case array_row_major: | |
8230 | default: | |
8231 | return DW_ORD_row_major; | |
8232 | }; | |
8233 | } | |
8234 | ||
72019c9c | 8235 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 8236 | the DIE's type field. */ |
72019c9c | 8237 | |
f792889a | 8238 | static struct type * |
72019c9c GM |
8239 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
8240 | { | |
7e314c57 JK |
8241 | struct type *domain_type, *set_type; |
8242 | struct attribute *attr; | |
f792889a | 8243 | |
7e314c57 JK |
8244 | domain_type = die_type (die, cu); |
8245 | ||
8246 | /* The die_type call above may have already set the type for this DIE. */ | |
8247 | set_type = get_die_type (die, cu); | |
8248 | if (set_type) | |
8249 | return set_type; | |
8250 | ||
8251 | set_type = create_set_type (NULL, domain_type); | |
8252 | ||
8253 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
8254 | if (attr) |
8255 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 8256 | |
f792889a | 8257 | return set_die_type (die, set_type, cu); |
72019c9c | 8258 | } |
7ca2d3a3 | 8259 | |
c906108c SS |
8260 | /* First cut: install each common block member as a global variable. */ |
8261 | ||
8262 | static void | |
e7c27a73 | 8263 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
8264 | { |
8265 | struct die_info *child_die; | |
8266 | struct attribute *attr; | |
8267 | struct symbol *sym; | |
8268 | CORE_ADDR base = (CORE_ADDR) 0; | |
8269 | ||
e142c38c | 8270 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
8271 | if (attr) |
8272 | { | |
0963b4bd | 8273 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
8274 | if (attr_form_is_block (attr)) |
8275 | { | |
e7c27a73 | 8276 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 8277 | } |
3690dd37 | 8278 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 8279 | { |
4d3c2250 | 8280 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
8281 | } |
8282 | else | |
8283 | { | |
4d3c2250 KB |
8284 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
8285 | "common block member"); | |
8e19ed76 | 8286 | } |
c906108c | 8287 | } |
639d11d3 | 8288 | if (die->child != NULL) |
c906108c | 8289 | { |
639d11d3 | 8290 | child_die = die->child; |
c906108c SS |
8291 | while (child_die && child_die->tag) |
8292 | { | |
74ac6d43 TT |
8293 | LONGEST offset; |
8294 | ||
e7c27a73 | 8295 | sym = new_symbol (child_die, NULL, cu); |
e8d28ef4 TT |
8296 | if (sym != NULL |
8297 | && handle_data_member_location (child_die, cu, &offset)) | |
c906108c | 8298 | { |
74ac6d43 | 8299 | SYMBOL_VALUE_ADDRESS (sym) = base + offset; |
c906108c SS |
8300 | add_symbol_to_list (sym, &global_symbols); |
8301 | } | |
8302 | child_die = sibling_die (child_die); | |
8303 | } | |
8304 | } | |
8305 | } | |
8306 | ||
0114d602 | 8307 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 8308 | |
0114d602 DJ |
8309 | static struct type * |
8310 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 8311 | { |
e7c27a73 | 8312 | struct objfile *objfile = cu->objfile; |
0114d602 | 8313 | const char *previous_prefix, *name; |
9219021c | 8314 | int is_anonymous; |
0114d602 DJ |
8315 | struct type *type; |
8316 | ||
8317 | /* For extensions, reuse the type of the original namespace. */ | |
8318 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
8319 | { | |
8320 | struct die_info *ext_die; | |
8321 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 8322 | |
0114d602 DJ |
8323 | ext_die = dwarf2_extension (die, &ext_cu); |
8324 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
8325 | |
8326 | /* EXT_CU may not be the same as CU. | |
8327 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
8328 | return set_die_type (die, type, cu); |
8329 | } | |
9219021c | 8330 | |
e142c38c | 8331 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
8332 | |
8333 | /* Now build the name of the current namespace. */ | |
8334 | ||
0114d602 DJ |
8335 | previous_prefix = determine_prefix (die, cu); |
8336 | if (previous_prefix[0] != '\0') | |
8337 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 8338 | previous_prefix, name, 0, cu); |
0114d602 DJ |
8339 | |
8340 | /* Create the type. */ | |
8341 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
8342 | objfile); | |
8343 | TYPE_NAME (type) = (char *) name; | |
8344 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
8345 | ||
60531b24 | 8346 | return set_die_type (die, type, cu); |
0114d602 DJ |
8347 | } |
8348 | ||
8349 | /* Read a C++ namespace. */ | |
8350 | ||
8351 | static void | |
8352 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
8353 | { | |
8354 | struct objfile *objfile = cu->objfile; | |
0114d602 | 8355 | int is_anonymous; |
9219021c | 8356 | |
5c4e30ca DC |
8357 | /* Add a symbol associated to this if we haven't seen the namespace |
8358 | before. Also, add a using directive if it's an anonymous | |
8359 | namespace. */ | |
9219021c | 8360 | |
f2f0e013 | 8361 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
8362 | { |
8363 | struct type *type; | |
8364 | ||
0114d602 | 8365 | type = read_type_die (die, cu); |
e7c27a73 | 8366 | new_symbol (die, type, cu); |
5c4e30ca | 8367 | |
e8e80198 | 8368 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 8369 | if (is_anonymous) |
0114d602 DJ |
8370 | { |
8371 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 8372 | |
c0cc3a76 | 8373 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
32019081 | 8374 | NULL, NULL, &objfile->objfile_obstack); |
0114d602 | 8375 | } |
5c4e30ca | 8376 | } |
9219021c | 8377 | |
639d11d3 | 8378 | if (die->child != NULL) |
d9fa45fe | 8379 | { |
639d11d3 | 8380 | struct die_info *child_die = die->child; |
6e70227d | 8381 | |
d9fa45fe DC |
8382 | while (child_die && child_die->tag) |
8383 | { | |
e7c27a73 | 8384 | process_die (child_die, cu); |
d9fa45fe DC |
8385 | child_die = sibling_die (child_die); |
8386 | } | |
8387 | } | |
38d518c9 EZ |
8388 | } |
8389 | ||
f55ee35c JK |
8390 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
8391 | imported module. Still we need that type as local Fortran "use ... only" | |
8392 | declaration imports depend on the created type in determine_prefix. */ | |
8393 | ||
8394 | static struct type * | |
8395 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
8396 | { | |
8397 | struct objfile *objfile = cu->objfile; | |
8398 | char *module_name; | |
8399 | struct type *type; | |
8400 | ||
8401 | module_name = dwarf2_name (die, cu); | |
8402 | if (!module_name) | |
3e43a32a MS |
8403 | complaint (&symfile_complaints, |
8404 | _("DW_TAG_module has no name, offset 0x%x"), | |
f55ee35c JK |
8405 | die->offset); |
8406 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); | |
8407 | ||
8408 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
8409 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
8410 | ||
8411 | return set_die_type (die, type, cu); | |
8412 | } | |
8413 | ||
5d7cb8df JK |
8414 | /* Read a Fortran module. */ |
8415 | ||
8416 | static void | |
8417 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
8418 | { | |
8419 | struct die_info *child_die = die->child; | |
8420 | ||
5d7cb8df JK |
8421 | while (child_die && child_die->tag) |
8422 | { | |
8423 | process_die (child_die, cu); | |
8424 | child_die = sibling_die (child_die); | |
8425 | } | |
8426 | } | |
8427 | ||
38d518c9 EZ |
8428 | /* Return the name of the namespace represented by DIE. Set |
8429 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
8430 | namespace. */ | |
8431 | ||
8432 | static const char * | |
e142c38c | 8433 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
8434 | { |
8435 | struct die_info *current_die; | |
8436 | const char *name = NULL; | |
8437 | ||
8438 | /* Loop through the extensions until we find a name. */ | |
8439 | ||
8440 | for (current_die = die; | |
8441 | current_die != NULL; | |
f2f0e013 | 8442 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 8443 | { |
e142c38c | 8444 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
8445 | if (name != NULL) |
8446 | break; | |
8447 | } | |
8448 | ||
8449 | /* Is it an anonymous namespace? */ | |
8450 | ||
8451 | *is_anonymous = (name == NULL); | |
8452 | if (*is_anonymous) | |
2b1dbab0 | 8453 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
8454 | |
8455 | return name; | |
d9fa45fe DC |
8456 | } |
8457 | ||
c906108c SS |
8458 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
8459 | the user defined type vector. */ | |
8460 | ||
f792889a | 8461 | static struct type * |
e7c27a73 | 8462 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8463 | { |
5e2b427d | 8464 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 8465 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 8466 | struct type *type; |
8b2dbe47 KB |
8467 | struct attribute *attr_byte_size; |
8468 | struct attribute *attr_address_class; | |
8469 | int byte_size, addr_class; | |
7e314c57 JK |
8470 | struct type *target_type; |
8471 | ||
8472 | target_type = die_type (die, cu); | |
c906108c | 8473 | |
7e314c57 JK |
8474 | /* The die_type call above may have already set the type for this DIE. */ |
8475 | type = get_die_type (die, cu); | |
8476 | if (type) | |
8477 | return type; | |
8478 | ||
8479 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 8480 | |
e142c38c | 8481 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
8482 | if (attr_byte_size) |
8483 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 8484 | else |
8b2dbe47 KB |
8485 | byte_size = cu_header->addr_size; |
8486 | ||
e142c38c | 8487 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
8488 | if (attr_address_class) |
8489 | addr_class = DW_UNSND (attr_address_class); | |
8490 | else | |
8491 | addr_class = DW_ADDR_none; | |
8492 | ||
8493 | /* If the pointer size or address class is different than the | |
8494 | default, create a type variant marked as such and set the | |
8495 | length accordingly. */ | |
8496 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 8497 | { |
5e2b427d | 8498 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
8499 | { |
8500 | int type_flags; | |
8501 | ||
849957d9 | 8502 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 8503 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
8504 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
8505 | == 0); | |
8b2dbe47 KB |
8506 | type = make_type_with_address_space (type, type_flags); |
8507 | } | |
8508 | else if (TYPE_LENGTH (type) != byte_size) | |
8509 | { | |
3e43a32a MS |
8510 | complaint (&symfile_complaints, |
8511 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 8512 | } |
6e70227d | 8513 | else |
9a619af0 MS |
8514 | { |
8515 | /* Should we also complain about unhandled address classes? */ | |
8516 | } | |
c906108c | 8517 | } |
8b2dbe47 KB |
8518 | |
8519 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 8520 | return set_die_type (die, type, cu); |
c906108c SS |
8521 | } |
8522 | ||
8523 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
8524 | the user defined type vector. */ | |
8525 | ||
f792889a | 8526 | static struct type * |
e7c27a73 | 8527 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
8528 | { |
8529 | struct type *type; | |
8530 | struct type *to_type; | |
8531 | struct type *domain; | |
8532 | ||
e7c27a73 DJ |
8533 | to_type = die_type (die, cu); |
8534 | domain = die_containing_type (die, cu); | |
0d5de010 | 8535 | |
7e314c57 JK |
8536 | /* The calls above may have already set the type for this DIE. */ |
8537 | type = get_die_type (die, cu); | |
8538 | if (type) | |
8539 | return type; | |
8540 | ||
0d5de010 DJ |
8541 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
8542 | type = lookup_methodptr_type (to_type); | |
8543 | else | |
8544 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 8545 | |
f792889a | 8546 | return set_die_type (die, type, cu); |
c906108c SS |
8547 | } |
8548 | ||
8549 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
8550 | the user defined type vector. */ | |
8551 | ||
f792889a | 8552 | static struct type * |
e7c27a73 | 8553 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8554 | { |
e7c27a73 | 8555 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 8556 | struct type *type, *target_type; |
c906108c SS |
8557 | struct attribute *attr; |
8558 | ||
7e314c57 JK |
8559 | target_type = die_type (die, cu); |
8560 | ||
8561 | /* The die_type call above may have already set the type for this DIE. */ | |
8562 | type = get_die_type (die, cu); | |
8563 | if (type) | |
8564 | return type; | |
8565 | ||
8566 | type = lookup_reference_type (target_type); | |
e142c38c | 8567 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
8568 | if (attr) |
8569 | { | |
8570 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
8571 | } | |
8572 | else | |
8573 | { | |
107d2387 | 8574 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 8575 | } |
f792889a | 8576 | return set_die_type (die, type, cu); |
c906108c SS |
8577 | } |
8578 | ||
f792889a | 8579 | static struct type * |
e7c27a73 | 8580 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8581 | { |
f792889a | 8582 | struct type *base_type, *cv_type; |
c906108c | 8583 | |
e7c27a73 | 8584 | base_type = die_type (die, cu); |
7e314c57 JK |
8585 | |
8586 | /* The die_type call above may have already set the type for this DIE. */ | |
8587 | cv_type = get_die_type (die, cu); | |
8588 | if (cv_type) | |
8589 | return cv_type; | |
8590 | ||
2f608a3a KW |
8591 | /* In case the const qualifier is applied to an array type, the element type |
8592 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
8593 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
8594 | { | |
8595 | struct type *el_type, *inner_array; | |
8596 | ||
8597 | base_type = copy_type (base_type); | |
8598 | inner_array = base_type; | |
8599 | ||
8600 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
8601 | { | |
8602 | TYPE_TARGET_TYPE (inner_array) = | |
8603 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
8604 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
8605 | } | |
8606 | ||
8607 | el_type = TYPE_TARGET_TYPE (inner_array); | |
8608 | TYPE_TARGET_TYPE (inner_array) = | |
8609 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
8610 | ||
8611 | return set_die_type (die, base_type, cu); | |
8612 | } | |
8613 | ||
f792889a DJ |
8614 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
8615 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
8616 | } |
8617 | ||
f792889a | 8618 | static struct type * |
e7c27a73 | 8619 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8620 | { |
f792889a | 8621 | struct type *base_type, *cv_type; |
c906108c | 8622 | |
e7c27a73 | 8623 | base_type = die_type (die, cu); |
7e314c57 JK |
8624 | |
8625 | /* The die_type call above may have already set the type for this DIE. */ | |
8626 | cv_type = get_die_type (die, cu); | |
8627 | if (cv_type) | |
8628 | return cv_type; | |
8629 | ||
f792889a DJ |
8630 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
8631 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
8632 | } |
8633 | ||
8634 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
8635 | the user defined type vector. It isn't really a user defined type, | |
8636 | but it behaves like one, with other DIE's using an AT_user_def_type | |
8637 | attribute to reference it. */ | |
8638 | ||
f792889a | 8639 | static struct type * |
e7c27a73 | 8640 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8641 | { |
e7c27a73 | 8642 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 8643 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
8644 | struct type *type, *range_type, *index_type, *char_type; |
8645 | struct attribute *attr; | |
8646 | unsigned int length; | |
8647 | ||
e142c38c | 8648 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
8649 | if (attr) |
8650 | { | |
8651 | length = DW_UNSND (attr); | |
8652 | } | |
8653 | else | |
8654 | { | |
0963b4bd | 8655 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 8656 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
8657 | if (attr) |
8658 | { | |
8659 | length = DW_UNSND (attr); | |
8660 | } | |
8661 | else | |
8662 | { | |
8663 | length = 1; | |
8664 | } | |
c906108c | 8665 | } |
6ccb9162 | 8666 | |
46bf5051 | 8667 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 8668 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
8669 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
8670 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 8671 | |
f792889a | 8672 | return set_die_type (die, type, cu); |
c906108c SS |
8673 | } |
8674 | ||
8675 | /* Handle DIES due to C code like: | |
8676 | ||
8677 | struct foo | |
c5aa993b JM |
8678 | { |
8679 | int (*funcp)(int a, long l); | |
8680 | int b; | |
8681 | }; | |
c906108c | 8682 | |
0963b4bd | 8683 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 8684 | |
f792889a | 8685 | static struct type * |
e7c27a73 | 8686 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8687 | { |
bb5ed363 | 8688 | struct objfile *objfile = cu->objfile; |
0963b4bd MS |
8689 | struct type *type; /* Type that this function returns. */ |
8690 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
8691 | struct attribute *attr; |
8692 | ||
e7c27a73 | 8693 | type = die_type (die, cu); |
7e314c57 JK |
8694 | |
8695 | /* The die_type call above may have already set the type for this DIE. */ | |
8696 | ftype = get_die_type (die, cu); | |
8697 | if (ftype) | |
8698 | return ftype; | |
8699 | ||
0c8b41f1 | 8700 | ftype = lookup_function_type (type); |
c906108c | 8701 | |
5b8101ae | 8702 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 8703 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 8704 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 8705 | || cu->language == language_cplus |
5b8101ae PM |
8706 | || cu->language == language_java |
8707 | || cu->language == language_pascal) | |
876cecd0 | 8708 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
8709 | else if (producer_is_realview (cu->producer)) |
8710 | /* RealView does not emit DW_AT_prototyped. We can not | |
8711 | distinguish prototyped and unprototyped functions; default to | |
8712 | prototyped, since that is more common in modern code (and | |
8713 | RealView warns about unprototyped functions). */ | |
8714 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 8715 | |
c055b101 CV |
8716 | /* Store the calling convention in the type if it's available in |
8717 | the subroutine die. Otherwise set the calling convention to | |
8718 | the default value DW_CC_normal. */ | |
8719 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
8720 | if (attr) |
8721 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
8722 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
8723 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
8724 | else | |
8725 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
8726 | |
8727 | /* We need to add the subroutine type to the die immediately so | |
8728 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 8729 | declared as the same subroutine type. */ |
76c10ea2 | 8730 | set_die_type (die, ftype, cu); |
6e70227d | 8731 | |
639d11d3 | 8732 | if (die->child != NULL) |
c906108c | 8733 | { |
bb5ed363 | 8734 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 8735 | struct die_info *child_die; |
8072405b | 8736 | int nparams, iparams; |
c906108c SS |
8737 | |
8738 | /* Count the number of parameters. | |
8739 | FIXME: GDB currently ignores vararg functions, but knows about | |
8740 | vararg member functions. */ | |
8072405b | 8741 | nparams = 0; |
639d11d3 | 8742 | child_die = die->child; |
c906108c SS |
8743 | while (child_die && child_die->tag) |
8744 | { | |
8745 | if (child_die->tag == DW_TAG_formal_parameter) | |
8746 | nparams++; | |
8747 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 8748 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
8749 | child_die = sibling_die (child_die); |
8750 | } | |
8751 | ||
8752 | /* Allocate storage for parameters and fill them in. */ | |
8753 | TYPE_NFIELDS (ftype) = nparams; | |
8754 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 8755 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 8756 | |
8072405b JK |
8757 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
8758 | even if we error out during the parameters reading below. */ | |
8759 | for (iparams = 0; iparams < nparams; iparams++) | |
8760 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
8761 | ||
8762 | iparams = 0; | |
639d11d3 | 8763 | child_die = die->child; |
c906108c SS |
8764 | while (child_die && child_die->tag) |
8765 | { | |
8766 | if (child_die->tag == DW_TAG_formal_parameter) | |
8767 | { | |
3ce3b1ba PA |
8768 | struct type *arg_type; |
8769 | ||
8770 | /* DWARF version 2 has no clean way to discern C++ | |
8771 | static and non-static member functions. G++ helps | |
8772 | GDB by marking the first parameter for non-static | |
8773 | member functions (which is the this pointer) as | |
8774 | artificial. We pass this information to | |
8775 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
8776 | ||
8777 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
8778 | 4.5 does not yet generate. */ | |
e142c38c | 8779 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
8780 | if (attr) |
8781 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
8782 | else | |
418835cc KS |
8783 | { |
8784 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
8785 | ||
8786 | /* GCC/43521: In java, the formal parameter | |
8787 | "this" is sometimes not marked with DW_AT_artificial. */ | |
8788 | if (cu->language == language_java) | |
8789 | { | |
8790 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 8791 | |
418835cc KS |
8792 | if (name && !strcmp (name, "this")) |
8793 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
8794 | } | |
8795 | } | |
3ce3b1ba PA |
8796 | arg_type = die_type (child_die, cu); |
8797 | ||
8798 | /* RealView does not mark THIS as const, which the testsuite | |
8799 | expects. GCC marks THIS as const in method definitions, | |
8800 | but not in the class specifications (GCC PR 43053). */ | |
8801 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
8802 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
8803 | { | |
8804 | int is_this = 0; | |
8805 | struct dwarf2_cu *arg_cu = cu; | |
8806 | const char *name = dwarf2_name (child_die, cu); | |
8807 | ||
8808 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
8809 | if (attr) | |
8810 | { | |
8811 | /* If the compiler emits this, use it. */ | |
8812 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
8813 | is_this = 1; | |
8814 | } | |
8815 | else if (name && strcmp (name, "this") == 0) | |
8816 | /* Function definitions will have the argument names. */ | |
8817 | is_this = 1; | |
8818 | else if (name == NULL && iparams == 0) | |
8819 | /* Declarations may not have the names, so like | |
8820 | elsewhere in GDB, assume an artificial first | |
8821 | argument is "this". */ | |
8822 | is_this = 1; | |
8823 | ||
8824 | if (is_this) | |
8825 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
8826 | arg_type, 0); | |
8827 | } | |
8828 | ||
8829 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
8830 | iparams++; |
8831 | } | |
8832 | child_die = sibling_die (child_die); | |
8833 | } | |
8834 | } | |
8835 | ||
76c10ea2 | 8836 | return ftype; |
c906108c SS |
8837 | } |
8838 | ||
f792889a | 8839 | static struct type * |
e7c27a73 | 8840 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8841 | { |
e7c27a73 | 8842 | struct objfile *objfile = cu->objfile; |
0114d602 | 8843 | const char *name = NULL; |
3c8e0968 | 8844 | struct type *this_type, *target_type; |
c906108c | 8845 | |
94af9270 | 8846 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 8847 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
8848 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
8849 | TYPE_NAME (this_type) = (char *) name; | |
f792889a | 8850 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
8851 | target_type = die_type (die, cu); |
8852 | if (target_type != this_type) | |
8853 | TYPE_TARGET_TYPE (this_type) = target_type; | |
8854 | else | |
8855 | { | |
8856 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
8857 | spec and cause infinite loops in GDB. */ | |
8858 | complaint (&symfile_complaints, | |
8859 | _("Self-referential DW_TAG_typedef " | |
8860 | "- DIE at 0x%x [in module %s]"), | |
bb5ed363 | 8861 | die->offset, objfile->name); |
3c8e0968 DE |
8862 | TYPE_TARGET_TYPE (this_type) = NULL; |
8863 | } | |
f792889a | 8864 | return this_type; |
c906108c SS |
8865 | } |
8866 | ||
8867 | /* Find a representation of a given base type and install | |
8868 | it in the TYPE field of the die. */ | |
8869 | ||
f792889a | 8870 | static struct type * |
e7c27a73 | 8871 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8872 | { |
e7c27a73 | 8873 | struct objfile *objfile = cu->objfile; |
c906108c SS |
8874 | struct type *type; |
8875 | struct attribute *attr; | |
8876 | int encoding = 0, size = 0; | |
39cbfefa | 8877 | char *name; |
6ccb9162 UW |
8878 | enum type_code code = TYPE_CODE_INT; |
8879 | int type_flags = 0; | |
8880 | struct type *target_type = NULL; | |
c906108c | 8881 | |
e142c38c | 8882 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
8883 | if (attr) |
8884 | { | |
8885 | encoding = DW_UNSND (attr); | |
8886 | } | |
e142c38c | 8887 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
8888 | if (attr) |
8889 | { | |
8890 | size = DW_UNSND (attr); | |
8891 | } | |
39cbfefa | 8892 | name = dwarf2_name (die, cu); |
6ccb9162 | 8893 | if (!name) |
c906108c | 8894 | { |
6ccb9162 UW |
8895 | complaint (&symfile_complaints, |
8896 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 8897 | } |
6ccb9162 UW |
8898 | |
8899 | switch (encoding) | |
c906108c | 8900 | { |
6ccb9162 UW |
8901 | case DW_ATE_address: |
8902 | /* Turn DW_ATE_address into a void * pointer. */ | |
8903 | code = TYPE_CODE_PTR; | |
8904 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8905 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
8906 | break; | |
8907 | case DW_ATE_boolean: | |
8908 | code = TYPE_CODE_BOOL; | |
8909 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8910 | break; | |
8911 | case DW_ATE_complex_float: | |
8912 | code = TYPE_CODE_COMPLEX; | |
8913 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
8914 | break; | |
8915 | case DW_ATE_decimal_float: | |
8916 | code = TYPE_CODE_DECFLOAT; | |
8917 | break; | |
8918 | case DW_ATE_float: | |
8919 | code = TYPE_CODE_FLT; | |
8920 | break; | |
8921 | case DW_ATE_signed: | |
8922 | break; | |
8923 | case DW_ATE_unsigned: | |
8924 | type_flags |= TYPE_FLAG_UNSIGNED; | |
3b2b8fea TT |
8925 | if (cu->language == language_fortran |
8926 | && name | |
8927 | && strncmp (name, "character(", sizeof ("character(") - 1) == 0) | |
8928 | code = TYPE_CODE_CHAR; | |
6ccb9162 UW |
8929 | break; |
8930 | case DW_ATE_signed_char: | |
6e70227d | 8931 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
8932 | || cu->language == language_pascal |
8933 | || cu->language == language_fortran) | |
6ccb9162 UW |
8934 | code = TYPE_CODE_CHAR; |
8935 | break; | |
8936 | case DW_ATE_unsigned_char: | |
868a0084 | 8937 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
8938 | || cu->language == language_pascal |
8939 | || cu->language == language_fortran) | |
6ccb9162 UW |
8940 | code = TYPE_CODE_CHAR; |
8941 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8942 | break; | |
75079b2b TT |
8943 | case DW_ATE_UTF: |
8944 | /* We just treat this as an integer and then recognize the | |
8945 | type by name elsewhere. */ | |
8946 | break; | |
8947 | ||
6ccb9162 UW |
8948 | default: |
8949 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
8950 | dwarf_type_encoding_name (encoding)); | |
8951 | break; | |
c906108c | 8952 | } |
6ccb9162 | 8953 | |
0114d602 DJ |
8954 | type = init_type (code, size, type_flags, NULL, objfile); |
8955 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
8956 | TYPE_TARGET_TYPE (type) = target_type; |
8957 | ||
0114d602 | 8958 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 8959 | TYPE_NOSIGN (type) = 1; |
0114d602 | 8960 | |
f792889a | 8961 | return set_die_type (die, type, cu); |
c906108c SS |
8962 | } |
8963 | ||
a02abb62 JB |
8964 | /* Read the given DW_AT_subrange DIE. */ |
8965 | ||
f792889a | 8966 | static struct type * |
a02abb62 JB |
8967 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
8968 | { | |
8969 | struct type *base_type; | |
8970 | struct type *range_type; | |
8971 | struct attribute *attr; | |
43bbcdc2 PH |
8972 | LONGEST low = 0; |
8973 | LONGEST high = -1; | |
39cbfefa | 8974 | char *name; |
43bbcdc2 | 8975 | LONGEST negative_mask; |
e77813c8 | 8976 | |
a02abb62 | 8977 | base_type = die_type (die, cu); |
953ac07e JK |
8978 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
8979 | check_typedef (base_type); | |
a02abb62 | 8980 | |
7e314c57 JK |
8981 | /* The die_type call above may have already set the type for this DIE. */ |
8982 | range_type = get_die_type (die, cu); | |
8983 | if (range_type) | |
8984 | return range_type; | |
8985 | ||
e142c38c | 8986 | if (cu->language == language_fortran) |
6e70227d | 8987 | { |
a02abb62 JB |
8988 | /* FORTRAN implies a lower bound of 1, if not given. */ |
8989 | low = 1; | |
8990 | } | |
8991 | ||
dd5e6932 DJ |
8992 | /* FIXME: For variable sized arrays either of these could be |
8993 | a variable rather than a constant value. We'll allow it, | |
8994 | but we don't know how to handle it. */ | |
e142c38c | 8995 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
8996 | if (attr) |
8997 | low = dwarf2_get_attr_constant_value (attr, 0); | |
8998 | ||
e142c38c | 8999 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 9000 | if (attr) |
6e70227d | 9001 | { |
d48323d8 | 9002 | if (attr_form_is_block (attr) || is_ref_attr (attr)) |
a02abb62 JB |
9003 | { |
9004 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 9005 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
9006 | FIXME: GDB does not yet know how to handle dynamic |
9007 | arrays properly, treat them as arrays with unspecified | |
9008 | length for now. | |
9009 | ||
9010 | FIXME: jimb/2003-09-22: GDB does not really know | |
9011 | how to handle arrays of unspecified length | |
9012 | either; we just represent them as zero-length | |
9013 | arrays. Choose an appropriate upper bound given | |
9014 | the lower bound we've computed above. */ | |
9015 | high = low - 1; | |
9016 | } | |
9017 | else | |
9018 | high = dwarf2_get_attr_constant_value (attr, 1); | |
9019 | } | |
e77813c8 PM |
9020 | else |
9021 | { | |
9022 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
9023 | if (attr) | |
9024 | { | |
9025 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
9026 | high = low + count - 1; | |
9027 | } | |
c2ff108b JK |
9028 | else |
9029 | { | |
9030 | /* Unspecified array length. */ | |
9031 | high = low - 1; | |
9032 | } | |
e77813c8 PM |
9033 | } |
9034 | ||
9035 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
9036 | without specifying a base type. | |
9037 | In that case, the base type must be set to the type of | |
9038 | the lower bound, upper bound or count, in that order, if any of these | |
9039 | three attributes references an object that has a type. | |
9040 | If no base type is found, the Dwarf-2 specifications say that | |
9041 | a signed integer type of size equal to the size of an address should | |
9042 | be used. | |
9043 | For the following C code: `extern char gdb_int [];' | |
9044 | GCC produces an empty range DIE. | |
9045 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 9046 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
9047 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
9048 | { | |
9049 | struct objfile *objfile = cu->objfile; | |
9050 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
9051 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
9052 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
9053 | ||
9054 | /* Test "int", "long int", and "long long int" objfile types, | |
9055 | and select the first one having a size above or equal to the | |
9056 | architecture address size. */ | |
9057 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
9058 | base_type = int_type; | |
9059 | else | |
9060 | { | |
9061 | int_type = objfile_type (objfile)->builtin_long; | |
9062 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
9063 | base_type = int_type; | |
9064 | else | |
9065 | { | |
9066 | int_type = objfile_type (objfile)->builtin_long_long; | |
9067 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
9068 | base_type = int_type; | |
9069 | } | |
9070 | } | |
9071 | } | |
a02abb62 | 9072 | |
6e70227d | 9073 | negative_mask = |
43bbcdc2 PH |
9074 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
9075 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
9076 | low |= negative_mask; | |
9077 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
9078 | high |= negative_mask; | |
9079 | ||
a02abb62 JB |
9080 | range_type = create_range_type (NULL, base_type, low, high); |
9081 | ||
bbb0eef6 JK |
9082 | /* Mark arrays with dynamic length at least as an array of unspecified |
9083 | length. GDB could check the boundary but before it gets implemented at | |
9084 | least allow accessing the array elements. */ | |
d48323d8 | 9085 | if (attr && attr_form_is_block (attr)) |
bbb0eef6 JK |
9086 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; |
9087 | ||
c2ff108b JK |
9088 | /* Ada expects an empty array on no boundary attributes. */ |
9089 | if (attr == NULL && cu->language != language_ada) | |
9090 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
9091 | ||
39cbfefa DJ |
9092 | name = dwarf2_name (die, cu); |
9093 | if (name) | |
9094 | TYPE_NAME (range_type) = name; | |
6e70227d | 9095 | |
e142c38c | 9096 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
9097 | if (attr) |
9098 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
9099 | ||
7e314c57 JK |
9100 | set_die_type (die, range_type, cu); |
9101 | ||
9102 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
9103 | set_descriptive_type (range_type, die, cu); |
9104 | ||
7e314c57 | 9105 | return range_type; |
a02abb62 | 9106 | } |
6e70227d | 9107 | |
f792889a | 9108 | static struct type * |
81a17f79 JB |
9109 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
9110 | { | |
9111 | struct type *type; | |
81a17f79 | 9112 | |
81a17f79 JB |
9113 | /* For now, we only support the C meaning of an unspecified type: void. */ |
9114 | ||
0114d602 DJ |
9115 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
9116 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 9117 | |
f792889a | 9118 | return set_die_type (die, type, cu); |
81a17f79 | 9119 | } |
a02abb62 | 9120 | |
51545339 DJ |
9121 | /* Trivial hash function for die_info: the hash value of a DIE |
9122 | is its offset in .debug_info for this objfile. */ | |
9123 | ||
9124 | static hashval_t | |
9125 | die_hash (const void *item) | |
9126 | { | |
9127 | const struct die_info *die = item; | |
9a619af0 | 9128 | |
51545339 DJ |
9129 | return die->offset; |
9130 | } | |
9131 | ||
9132 | /* Trivial comparison function for die_info structures: two DIEs | |
9133 | are equal if they have the same offset. */ | |
9134 | ||
9135 | static int | |
9136 | die_eq (const void *item_lhs, const void *item_rhs) | |
9137 | { | |
9138 | const struct die_info *die_lhs = item_lhs; | |
9139 | const struct die_info *die_rhs = item_rhs; | |
9a619af0 | 9140 | |
51545339 DJ |
9141 | return die_lhs->offset == die_rhs->offset; |
9142 | } | |
9143 | ||
c906108c SS |
9144 | /* Read a whole compilation unit into a linked list of dies. */ |
9145 | ||
f9aca02d | 9146 | static struct die_info * |
93311388 | 9147 | read_comp_unit (gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 9148 | { |
93311388 | 9149 | struct die_reader_specs reader_specs; |
98bfdba5 | 9150 | int read_abbrevs = 0; |
1d9ec526 | 9151 | struct cleanup *back_to = NULL; |
98bfdba5 PA |
9152 | struct die_info *die; |
9153 | ||
9154 | if (cu->dwarf2_abbrevs == NULL) | |
9155 | { | |
9156 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
9157 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
9158 | read_abbrevs = 1; | |
9159 | } | |
93311388 | 9160 | |
348e048f | 9161 | gdb_assert (cu->die_hash == NULL); |
51545339 DJ |
9162 | cu->die_hash |
9163 | = htab_create_alloc_ex (cu->header.length / 12, | |
9164 | die_hash, | |
9165 | die_eq, | |
9166 | NULL, | |
9167 | &cu->comp_unit_obstack, | |
9168 | hashtab_obstack_allocate, | |
9169 | dummy_obstack_deallocate); | |
9170 | ||
93311388 DE |
9171 | init_cu_die_reader (&reader_specs, cu); |
9172 | ||
98bfdba5 PA |
9173 | die = read_die_and_children (&reader_specs, info_ptr, &info_ptr, NULL); |
9174 | ||
9175 | if (read_abbrevs) | |
9176 | do_cleanups (back_to); | |
9177 | ||
9178 | return die; | |
639d11d3 DC |
9179 | } |
9180 | ||
d97bc12b DE |
9181 | /* Main entry point for reading a DIE and all children. |
9182 | Read the DIE and dump it if requested. */ | |
9183 | ||
9184 | static struct die_info * | |
93311388 DE |
9185 | read_die_and_children (const struct die_reader_specs *reader, |
9186 | gdb_byte *info_ptr, | |
d97bc12b DE |
9187 | gdb_byte **new_info_ptr, |
9188 | struct die_info *parent) | |
9189 | { | |
93311388 | 9190 | struct die_info *result = read_die_and_children_1 (reader, info_ptr, |
d97bc12b DE |
9191 | new_info_ptr, parent); |
9192 | ||
9193 | if (dwarf2_die_debug) | |
9194 | { | |
348e048f DE |
9195 | fprintf_unfiltered (gdb_stdlog, |
9196 | "\nRead die from %s of %s:\n", | |
b0df02fd | 9197 | (reader->cu->per_cu->debug_types_section |
8b70b953 TT |
9198 | ? ".debug_types" |
9199 | : ".debug_info"), | |
348e048f | 9200 | reader->abfd->filename); |
d97bc12b DE |
9201 | dump_die (result, dwarf2_die_debug); |
9202 | } | |
9203 | ||
9204 | return result; | |
9205 | } | |
9206 | ||
639d11d3 DC |
9207 | /* Read a single die and all its descendents. Set the die's sibling |
9208 | field to NULL; set other fields in the die correctly, and set all | |
9209 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
9210 | location of the info_ptr after reading all of those dies. PARENT | |
9211 | is the parent of the die in question. */ | |
9212 | ||
9213 | static struct die_info * | |
93311388 DE |
9214 | read_die_and_children_1 (const struct die_reader_specs *reader, |
9215 | gdb_byte *info_ptr, | |
d97bc12b DE |
9216 | gdb_byte **new_info_ptr, |
9217 | struct die_info *parent) | |
639d11d3 DC |
9218 | { |
9219 | struct die_info *die; | |
fe1b8b76 | 9220 | gdb_byte *cur_ptr; |
639d11d3 DC |
9221 | int has_children; |
9222 | ||
93311388 | 9223 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
9224 | if (die == NULL) |
9225 | { | |
9226 | *new_info_ptr = cur_ptr; | |
9227 | return NULL; | |
9228 | } | |
93311388 | 9229 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
9230 | |
9231 | if (has_children) | |
348e048f | 9232 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
9233 | else |
9234 | { | |
9235 | die->child = NULL; | |
9236 | *new_info_ptr = cur_ptr; | |
9237 | } | |
9238 | ||
9239 | die->sibling = NULL; | |
9240 | die->parent = parent; | |
9241 | return die; | |
9242 | } | |
9243 | ||
9244 | /* Read a die, all of its descendents, and all of its siblings; set | |
9245 | all of the fields of all of the dies correctly. Arguments are as | |
9246 | in read_die_and_children. */ | |
9247 | ||
9248 | static struct die_info * | |
93311388 DE |
9249 | read_die_and_siblings (const struct die_reader_specs *reader, |
9250 | gdb_byte *info_ptr, | |
fe1b8b76 | 9251 | gdb_byte **new_info_ptr, |
639d11d3 DC |
9252 | struct die_info *parent) |
9253 | { | |
9254 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 9255 | gdb_byte *cur_ptr; |
639d11d3 | 9256 | |
c906108c | 9257 | cur_ptr = info_ptr; |
639d11d3 DC |
9258 | first_die = last_sibling = NULL; |
9259 | ||
9260 | while (1) | |
c906108c | 9261 | { |
639d11d3 | 9262 | struct die_info *die |
93311388 | 9263 | = read_die_and_children_1 (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 9264 | |
1d325ec1 | 9265 | if (die == NULL) |
c906108c | 9266 | { |
639d11d3 DC |
9267 | *new_info_ptr = cur_ptr; |
9268 | return first_die; | |
c906108c | 9269 | } |
1d325ec1 DJ |
9270 | |
9271 | if (!first_die) | |
9272 | first_die = die; | |
c906108c | 9273 | else |
1d325ec1 DJ |
9274 | last_sibling->sibling = die; |
9275 | ||
9276 | last_sibling = die; | |
c906108c | 9277 | } |
c906108c SS |
9278 | } |
9279 | ||
93311388 DE |
9280 | /* Read the die from the .debug_info section buffer. Set DIEP to |
9281 | point to a newly allocated die with its information, except for its | |
9282 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
9283 | whether the die has children or not. */ | |
9284 | ||
9285 | static gdb_byte * | |
9286 | read_full_die (const struct die_reader_specs *reader, | |
9287 | struct die_info **diep, gdb_byte *info_ptr, | |
9288 | int *has_children) | |
9289 | { | |
9290 | unsigned int abbrev_number, bytes_read, i, offset; | |
9291 | struct abbrev_info *abbrev; | |
9292 | struct die_info *die; | |
9293 | struct dwarf2_cu *cu = reader->cu; | |
9294 | bfd *abfd = reader->abfd; | |
9295 | ||
9296 | offset = info_ptr - reader->buffer; | |
9297 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9298 | info_ptr += bytes_read; | |
9299 | if (!abbrev_number) | |
9300 | { | |
9301 | *diep = NULL; | |
9302 | *has_children = 0; | |
9303 | return info_ptr; | |
9304 | } | |
9305 | ||
9306 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
9307 | if (!abbrev) | |
348e048f DE |
9308 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
9309 | abbrev_number, | |
9310 | bfd_get_filename (abfd)); | |
9311 | ||
93311388 DE |
9312 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
9313 | die->offset = offset; | |
9314 | die->tag = abbrev->tag; | |
9315 | die->abbrev = abbrev_number; | |
9316 | ||
9317 | die->num_attrs = abbrev->num_attrs; | |
9318 | ||
9319 | for (i = 0; i < abbrev->num_attrs; ++i) | |
9320 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
9321 | abfd, info_ptr, cu); | |
9322 | ||
9323 | *diep = die; | |
9324 | *has_children = abbrev->has_children; | |
9325 | return info_ptr; | |
9326 | } | |
9327 | ||
c906108c SS |
9328 | /* In DWARF version 2, the description of the debugging information is |
9329 | stored in a separate .debug_abbrev section. Before we read any | |
9330 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
9331 | in a hash table. This function also sets flags in CU describing |
9332 | the data found in the abbrev table. */ | |
c906108c SS |
9333 | |
9334 | static void | |
e7c27a73 | 9335 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 9336 | { |
e7c27a73 | 9337 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 9338 | gdb_byte *abbrev_ptr; |
c906108c SS |
9339 | struct abbrev_info *cur_abbrev; |
9340 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
9341 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
9342 | struct attr_abbrev *cur_attrs; |
9343 | unsigned int allocated_attrs; | |
c906108c | 9344 | |
0963b4bd | 9345 | /* Initialize dwarf2 abbrevs. */ |
f3dd6933 DJ |
9346 | obstack_init (&cu->abbrev_obstack); |
9347 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
9348 | (ABBREV_HASH_SIZE | |
9349 | * sizeof (struct abbrev_info *))); | |
9350 | memset (cu->dwarf2_abbrevs, 0, | |
9351 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 9352 | |
be391dca TT |
9353 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
9354 | &dwarf2_per_objfile->abbrev); | |
dce234bc | 9355 | abbrev_ptr = dwarf2_per_objfile->abbrev.buffer + cu_header->abbrev_offset; |
c906108c SS |
9356 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
9357 | abbrev_ptr += bytes_read; | |
9358 | ||
f3dd6933 DJ |
9359 | allocated_attrs = ATTR_ALLOC_CHUNK; |
9360 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 9361 | |
0963b4bd | 9362 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
9363 | while (abbrev_number) |
9364 | { | |
f3dd6933 | 9365 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
9366 | |
9367 | /* read in abbrev header */ | |
9368 | cur_abbrev->number = abbrev_number; | |
9369 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
9370 | abbrev_ptr += bytes_read; | |
9371 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
9372 | abbrev_ptr += 1; | |
9373 | ||
72bf9492 DJ |
9374 | if (cur_abbrev->tag == DW_TAG_namespace) |
9375 | cu->has_namespace_info = 1; | |
9376 | ||
c906108c SS |
9377 | /* now read in declarations */ |
9378 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
9379 | abbrev_ptr += bytes_read; | |
9380 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
9381 | abbrev_ptr += bytes_read; | |
9382 | while (abbrev_name) | |
9383 | { | |
f3dd6933 | 9384 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 9385 | { |
f3dd6933 DJ |
9386 | allocated_attrs += ATTR_ALLOC_CHUNK; |
9387 | cur_attrs | |
9388 | = xrealloc (cur_attrs, (allocated_attrs | |
9389 | * sizeof (struct attr_abbrev))); | |
c906108c | 9390 | } |
ae038cb0 DJ |
9391 | |
9392 | /* Record whether this compilation unit might have | |
9393 | inter-compilation-unit references. If we don't know what form | |
9394 | this attribute will have, then it might potentially be a | |
9395 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
9396 | references. */ | |
9397 | ||
9398 | if (abbrev_form == DW_FORM_ref_addr | |
9399 | || abbrev_form == DW_FORM_indirect) | |
9400 | cu->has_form_ref_addr = 1; | |
9401 | ||
f3dd6933 DJ |
9402 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
9403 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
9404 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
9405 | abbrev_ptr += bytes_read; | |
9406 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
9407 | abbrev_ptr += bytes_read; | |
9408 | } | |
9409 | ||
f3dd6933 DJ |
9410 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
9411 | (cur_abbrev->num_attrs | |
9412 | * sizeof (struct attr_abbrev))); | |
9413 | memcpy (cur_abbrev->attrs, cur_attrs, | |
9414 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
9415 | ||
c906108c | 9416 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
9417 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
9418 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
9419 | |
9420 | /* Get next abbreviation. | |
9421 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
9422 | always properly terminated with an abbrev number of 0. |
9423 | Exit loop if we encounter an abbreviation which we have | |
9424 | already read (which means we are about to read the abbreviations | |
9425 | for the next compile unit) or if the end of the abbreviation | |
9426 | table is reached. */ | |
dce234bc PP |
9427 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev.buffer) |
9428 | >= dwarf2_per_objfile->abbrev.size) | |
c906108c SS |
9429 | break; |
9430 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
9431 | abbrev_ptr += bytes_read; | |
e7c27a73 | 9432 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
9433 | break; |
9434 | } | |
f3dd6933 DJ |
9435 | |
9436 | xfree (cur_attrs); | |
c906108c SS |
9437 | } |
9438 | ||
f3dd6933 | 9439 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 9440 | |
c906108c | 9441 | static void |
f3dd6933 | 9442 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 9443 | { |
f3dd6933 | 9444 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 9445 | |
f3dd6933 DJ |
9446 | obstack_free (&cu->abbrev_obstack, NULL); |
9447 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
9448 | } |
9449 | ||
9450 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
9451 | ||
9452 | static struct abbrev_info * | |
e7c27a73 | 9453 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
9454 | { |
9455 | unsigned int hash_number; | |
9456 | struct abbrev_info *abbrev; | |
9457 | ||
9458 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 9459 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
9460 | |
9461 | while (abbrev) | |
9462 | { | |
9463 | if (abbrev->number == number) | |
9464 | return abbrev; | |
9465 | else | |
9466 | abbrev = abbrev->next; | |
9467 | } | |
9468 | return NULL; | |
9469 | } | |
9470 | ||
72bf9492 DJ |
9471 | /* Returns nonzero if TAG represents a type that we might generate a partial |
9472 | symbol for. */ | |
9473 | ||
9474 | static int | |
9475 | is_type_tag_for_partial (int tag) | |
9476 | { | |
9477 | switch (tag) | |
9478 | { | |
9479 | #if 0 | |
9480 | /* Some types that would be reasonable to generate partial symbols for, | |
9481 | that we don't at present. */ | |
9482 | case DW_TAG_array_type: | |
9483 | case DW_TAG_file_type: | |
9484 | case DW_TAG_ptr_to_member_type: | |
9485 | case DW_TAG_set_type: | |
9486 | case DW_TAG_string_type: | |
9487 | case DW_TAG_subroutine_type: | |
9488 | #endif | |
9489 | case DW_TAG_base_type: | |
9490 | case DW_TAG_class_type: | |
680b30c7 | 9491 | case DW_TAG_interface_type: |
72bf9492 DJ |
9492 | case DW_TAG_enumeration_type: |
9493 | case DW_TAG_structure_type: | |
9494 | case DW_TAG_subrange_type: | |
9495 | case DW_TAG_typedef: | |
9496 | case DW_TAG_union_type: | |
9497 | return 1; | |
9498 | default: | |
9499 | return 0; | |
9500 | } | |
9501 | } | |
9502 | ||
9503 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
9504 | ||
9505 | static struct partial_die_info * | |
93311388 DE |
9506 | load_partial_dies (bfd *abfd, gdb_byte *buffer, gdb_byte *info_ptr, |
9507 | int building_psymtab, struct dwarf2_cu *cu) | |
72bf9492 | 9508 | { |
bb5ed363 | 9509 | struct objfile *objfile = cu->objfile; |
72bf9492 DJ |
9510 | struct partial_die_info *part_die; |
9511 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
9512 | struct abbrev_info *abbrev; | |
9513 | unsigned int bytes_read; | |
5afb4e99 | 9514 | unsigned int load_all = 0; |
72bf9492 DJ |
9515 | |
9516 | int nesting_level = 1; | |
9517 | ||
9518 | parent_die = NULL; | |
9519 | last_die = NULL; | |
9520 | ||
5afb4e99 DJ |
9521 | if (cu->per_cu && cu->per_cu->load_all_dies) |
9522 | load_all = 1; | |
9523 | ||
72bf9492 DJ |
9524 | cu->partial_dies |
9525 | = htab_create_alloc_ex (cu->header.length / 12, | |
9526 | partial_die_hash, | |
9527 | partial_die_eq, | |
9528 | NULL, | |
9529 | &cu->comp_unit_obstack, | |
9530 | hashtab_obstack_allocate, | |
9531 | dummy_obstack_deallocate); | |
9532 | ||
9533 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
9534 | sizeof (struct partial_die_info)); | |
9535 | ||
9536 | while (1) | |
9537 | { | |
9538 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
9539 | ||
9540 | /* A NULL abbrev means the end of a series of children. */ | |
9541 | if (abbrev == NULL) | |
9542 | { | |
9543 | if (--nesting_level == 0) | |
9544 | { | |
9545 | /* PART_DIE was probably the last thing allocated on the | |
9546 | comp_unit_obstack, so we could call obstack_free | |
9547 | here. We don't do that because the waste is small, | |
9548 | and will be cleaned up when we're done with this | |
9549 | compilation unit. This way, we're also more robust | |
9550 | against other users of the comp_unit_obstack. */ | |
9551 | return first_die; | |
9552 | } | |
9553 | info_ptr += bytes_read; | |
9554 | last_die = parent_die; | |
9555 | parent_die = parent_die->die_parent; | |
9556 | continue; | |
9557 | } | |
9558 | ||
98bfdba5 PA |
9559 | /* Check for template arguments. We never save these; if |
9560 | they're seen, we just mark the parent, and go on our way. */ | |
9561 | if (parent_die != NULL | |
9562 | && cu->language == language_cplus | |
9563 | && (abbrev->tag == DW_TAG_template_type_param | |
9564 | || abbrev->tag == DW_TAG_template_value_param)) | |
9565 | { | |
9566 | parent_die->has_template_arguments = 1; | |
9567 | ||
9568 | if (!load_all) | |
9569 | { | |
9570 | /* We don't need a partial DIE for the template argument. */ | |
9571 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, | |
9572 | cu); | |
9573 | continue; | |
9574 | } | |
9575 | } | |
9576 | ||
9577 | /* We only recurse into subprograms looking for template arguments. | |
9578 | Skip their other children. */ | |
9579 | if (!load_all | |
9580 | && cu->language == language_cplus | |
9581 | && parent_die != NULL | |
9582 | && parent_die->tag == DW_TAG_subprogram) | |
9583 | { | |
9584 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); | |
9585 | continue; | |
9586 | } | |
9587 | ||
5afb4e99 DJ |
9588 | /* Check whether this DIE is interesting enough to save. Normally |
9589 | we would not be interested in members here, but there may be | |
9590 | later variables referencing them via DW_AT_specification (for | |
9591 | static members). */ | |
9592 | if (!load_all | |
9593 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 9594 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
9595 | && abbrev->tag != DW_TAG_enumerator |
9596 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 9597 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 9598 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 9599 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 9600 | && abbrev->tag != DW_TAG_module |
5afb4e99 | 9601 | && abbrev->tag != DW_TAG_member) |
72bf9492 DJ |
9602 | { |
9603 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 9604 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
72bf9492 DJ |
9605 | continue; |
9606 | } | |
9607 | ||
93311388 DE |
9608 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, abfd, |
9609 | buffer, info_ptr, cu); | |
72bf9492 DJ |
9610 | |
9611 | /* This two-pass algorithm for processing partial symbols has a | |
9612 | high cost in cache pressure. Thus, handle some simple cases | |
9613 | here which cover the majority of C partial symbols. DIEs | |
9614 | which neither have specification tags in them, nor could have | |
9615 | specification tags elsewhere pointing at them, can simply be | |
9616 | processed and discarded. | |
9617 | ||
9618 | This segment is also optional; scan_partial_symbols and | |
9619 | add_partial_symbol will handle these DIEs if we chain | |
9620 | them in normally. When compilers which do not emit large | |
9621 | quantities of duplicate debug information are more common, | |
9622 | this code can probably be removed. */ | |
9623 | ||
9624 | /* Any complete simple types at the top level (pretty much all | |
9625 | of them, for a language without namespaces), can be processed | |
9626 | directly. */ | |
9627 | if (parent_die == NULL | |
9628 | && part_die->has_specification == 0 | |
9629 | && part_die->is_declaration == 0 | |
d8228535 | 9630 | && ((part_die->tag == DW_TAG_typedef && !part_die->has_children) |
72bf9492 DJ |
9631 | || part_die->tag == DW_TAG_base_type |
9632 | || part_die->tag == DW_TAG_subrange_type)) | |
9633 | { | |
9634 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 9635 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 9636 | VAR_DOMAIN, LOC_TYPEDEF, |
bb5ed363 DE |
9637 | &objfile->static_psymbols, |
9638 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
93311388 | 9639 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
9640 | continue; |
9641 | } | |
9642 | ||
d8228535 JK |
9643 | /* The exception for DW_TAG_typedef with has_children above is |
9644 | a workaround of GCC PR debug/47510. In the case of this complaint | |
9645 | type_name_no_tag_or_error will error on such types later. | |
9646 | ||
9647 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
9648 | it could not find the child DIEs referenced later, this is checked | |
9649 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
9650 | ||
9651 | if (part_die->tag == DW_TAG_typedef && part_die->has_children) | |
9652 | complaint (&symfile_complaints, | |
9653 | _("DW_TAG_typedef has childen - GCC PR debug/47510 bug " | |
9654 | "- DIE at 0x%x [in module %s]"), | |
bb5ed363 | 9655 | part_die->offset, objfile->name); |
d8228535 | 9656 | |
72bf9492 DJ |
9657 | /* If we're at the second level, and we're an enumerator, and |
9658 | our parent has no specification (meaning possibly lives in a | |
9659 | namespace elsewhere), then we can add the partial symbol now | |
9660 | instead of queueing it. */ | |
9661 | if (part_die->tag == DW_TAG_enumerator | |
9662 | && parent_die != NULL | |
9663 | && parent_die->die_parent == NULL | |
9664 | && parent_die->tag == DW_TAG_enumeration_type | |
9665 | && parent_die->has_specification == 0) | |
9666 | { | |
9667 | if (part_die->name == NULL) | |
3e43a32a MS |
9668 | complaint (&symfile_complaints, |
9669 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 9670 | else if (building_psymtab) |
04a679b8 | 9671 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 9672 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
9673 | (cu->language == language_cplus |
9674 | || cu->language == language_java) | |
bb5ed363 DE |
9675 | ? &objfile->global_psymbols |
9676 | : &objfile->static_psymbols, | |
9677 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
72bf9492 | 9678 | |
93311388 | 9679 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
9680 | continue; |
9681 | } | |
9682 | ||
9683 | /* We'll save this DIE so link it in. */ | |
9684 | part_die->die_parent = parent_die; | |
9685 | part_die->die_sibling = NULL; | |
9686 | part_die->die_child = NULL; | |
9687 | ||
9688 | if (last_die && last_die == parent_die) | |
9689 | last_die->die_child = part_die; | |
9690 | else if (last_die) | |
9691 | last_die->die_sibling = part_die; | |
9692 | ||
9693 | last_die = part_die; | |
9694 | ||
9695 | if (first_die == NULL) | |
9696 | first_die = part_die; | |
9697 | ||
9698 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
9699 | find interesting need to be in the hash table, because we | |
9700 | also have the parent/sibling/child chains; only those that we | |
9701 | might refer to by offset later during partial symbol reading. | |
9702 | ||
9703 | For now this means things that might have be the target of a | |
9704 | DW_AT_specification, DW_AT_abstract_origin, or | |
9705 | DW_AT_extension. DW_AT_extension will refer only to | |
9706 | namespaces; DW_AT_abstract_origin refers to functions (and | |
9707 | many things under the function DIE, but we do not recurse | |
9708 | into function DIEs during partial symbol reading) and | |
9709 | possibly variables as well; DW_AT_specification refers to | |
9710 | declarations. Declarations ought to have the DW_AT_declaration | |
9711 | flag. It happens that GCC forgets to put it in sometimes, but | |
9712 | only for functions, not for types. | |
9713 | ||
9714 | Adding more things than necessary to the hash table is harmless | |
9715 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
9716 | wasted time in find_partial_die, when we reread the compilation |
9717 | unit with load_all_dies set. */ | |
72bf9492 | 9718 | |
5afb4e99 | 9719 | if (load_all |
72929c62 | 9720 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 9721 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
9722 | || abbrev->tag == DW_TAG_variable |
9723 | || abbrev->tag == DW_TAG_namespace | |
9724 | || part_die->is_declaration) | |
9725 | { | |
9726 | void **slot; | |
9727 | ||
9728 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9729 | part_die->offset, INSERT); | |
9730 | *slot = part_die; | |
9731 | } | |
9732 | ||
9733 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
9734 | sizeof (struct partial_die_info)); | |
9735 | ||
9736 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 9737 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
9738 | languages we have to, so that we can get at method physnames |
9739 | to infer fully qualified class names, for DW_AT_specification, | |
9740 | and for C++ template arguments. For C++, we also look one level | |
9741 | inside functions to find template arguments (if the name of the | |
9742 | function does not already contain the template arguments). | |
bc30ff58 JB |
9743 | |
9744 | For Ada, we need to scan the children of subprograms and lexical | |
9745 | blocks as well because Ada allows the definition of nested | |
9746 | entities that could be interesting for the debugger, such as | |
9747 | nested subprograms for instance. */ | |
72bf9492 | 9748 | if (last_die->has_children |
5afb4e99 DJ |
9749 | && (load_all |
9750 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 9751 | || last_die->tag == DW_TAG_module |
72bf9492 | 9752 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
9753 | || (cu->language == language_cplus |
9754 | && last_die->tag == DW_TAG_subprogram | |
9755 | && (last_die->name == NULL | |
9756 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
9757 | || (cu->language != language_c |
9758 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 9759 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 9760 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
9761 | || last_die->tag == DW_TAG_union_type)) |
9762 | || (cu->language == language_ada | |
9763 | && (last_die->tag == DW_TAG_subprogram | |
9764 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
9765 | { |
9766 | nesting_level++; | |
9767 | parent_die = last_die; | |
9768 | continue; | |
9769 | } | |
9770 | ||
9771 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 9772 | info_ptr = locate_pdi_sibling (last_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
9773 | |
9774 | /* Back to the top, do it again. */ | |
9775 | } | |
9776 | } | |
9777 | ||
c906108c SS |
9778 | /* Read a minimal amount of information into the minimal die structure. */ |
9779 | ||
fe1b8b76 | 9780 | static gdb_byte * |
72bf9492 DJ |
9781 | read_partial_die (struct partial_die_info *part_die, |
9782 | struct abbrev_info *abbrev, | |
9783 | unsigned int abbrev_len, bfd *abfd, | |
93311388 DE |
9784 | gdb_byte *buffer, gdb_byte *info_ptr, |
9785 | struct dwarf2_cu *cu) | |
c906108c | 9786 | { |
bb5ed363 | 9787 | struct objfile *objfile = cu->objfile; |
fa238c03 | 9788 | unsigned int i; |
c906108c | 9789 | struct attribute attr; |
c5aa993b | 9790 | int has_low_pc_attr = 0; |
c906108c SS |
9791 | int has_high_pc_attr = 0; |
9792 | ||
72bf9492 | 9793 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 9794 | |
93311388 | 9795 | part_die->offset = info_ptr - buffer; |
72bf9492 DJ |
9796 | |
9797 | info_ptr += abbrev_len; | |
9798 | ||
9799 | if (abbrev == NULL) | |
9800 | return info_ptr; | |
9801 | ||
c906108c SS |
9802 | part_die->tag = abbrev->tag; |
9803 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
9804 | |
9805 | for (i = 0; i < abbrev->num_attrs; ++i) | |
9806 | { | |
e7c27a73 | 9807 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
9808 | |
9809 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 9810 | partial symbol table. */ |
c906108c SS |
9811 | switch (attr.name) |
9812 | { | |
9813 | case DW_AT_name: | |
71c25dea TT |
9814 | switch (part_die->tag) |
9815 | { | |
9816 | case DW_TAG_compile_unit: | |
348e048f | 9817 | case DW_TAG_type_unit: |
71c25dea TT |
9818 | /* Compilation units have a DW_AT_name that is a filename, not |
9819 | a source language identifier. */ | |
9820 | case DW_TAG_enumeration_type: | |
9821 | case DW_TAG_enumerator: | |
9822 | /* These tags always have simple identifiers already; no need | |
9823 | to canonicalize them. */ | |
9824 | part_die->name = DW_STRING (&attr); | |
9825 | break; | |
9826 | default: | |
9827 | part_die->name | |
9828 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
bb5ed363 | 9829 | &objfile->objfile_obstack); |
71c25dea TT |
9830 | break; |
9831 | } | |
c906108c | 9832 | break; |
31ef98ae | 9833 | case DW_AT_linkage_name: |
c906108c | 9834 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
9835 | /* Note that both forms of linkage name might appear. We |
9836 | assume they will be the same, and we only store the last | |
9837 | one we see. */ | |
94af9270 KS |
9838 | if (cu->language == language_ada) |
9839 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 9840 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
9841 | break; |
9842 | case DW_AT_low_pc: | |
9843 | has_low_pc_attr = 1; | |
9844 | part_die->lowpc = DW_ADDR (&attr); | |
9845 | break; | |
9846 | case DW_AT_high_pc: | |
9847 | has_high_pc_attr = 1; | |
9848 | part_die->highpc = DW_ADDR (&attr); | |
9849 | break; | |
9850 | case DW_AT_location: | |
0963b4bd | 9851 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
9852 | if (attr_form_is_block (&attr)) |
9853 | { | |
9854 | part_die->locdesc = DW_BLOCK (&attr); | |
9855 | } | |
3690dd37 | 9856 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 9857 | { |
4d3c2250 | 9858 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
9859 | } |
9860 | else | |
9861 | { | |
4d3c2250 KB |
9862 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
9863 | "partial symbol information"); | |
8e19ed76 | 9864 | } |
c906108c | 9865 | break; |
c906108c SS |
9866 | case DW_AT_external: |
9867 | part_die->is_external = DW_UNSND (&attr); | |
9868 | break; | |
9869 | case DW_AT_declaration: | |
9870 | part_die->is_declaration = DW_UNSND (&attr); | |
9871 | break; | |
9872 | case DW_AT_type: | |
9873 | part_die->has_type = 1; | |
9874 | break; | |
9875 | case DW_AT_abstract_origin: | |
9876 | case DW_AT_specification: | |
72bf9492 DJ |
9877 | case DW_AT_extension: |
9878 | part_die->has_specification = 1; | |
c764a876 | 9879 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
9880 | break; |
9881 | case DW_AT_sibling: | |
9882 | /* Ignore absolute siblings, they might point outside of | |
9883 | the current compile unit. */ | |
9884 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
9885 | complaint (&symfile_complaints, |
9886 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 9887 | else |
93311388 | 9888 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr); |
c906108c | 9889 | break; |
fa4028e9 JB |
9890 | case DW_AT_byte_size: |
9891 | part_die->has_byte_size = 1; | |
9892 | break; | |
68511cec CES |
9893 | case DW_AT_calling_convention: |
9894 | /* DWARF doesn't provide a way to identify a program's source-level | |
9895 | entry point. DW_AT_calling_convention attributes are only meant | |
9896 | to describe functions' calling conventions. | |
9897 | ||
9898 | However, because it's a necessary piece of information in | |
9899 | Fortran, and because DW_CC_program is the only piece of debugging | |
9900 | information whose definition refers to a 'main program' at all, | |
9901 | several compilers have begun marking Fortran main programs with | |
9902 | DW_CC_program --- even when those functions use the standard | |
9903 | calling conventions. | |
9904 | ||
9905 | So until DWARF specifies a way to provide this information and | |
9906 | compilers pick up the new representation, we'll support this | |
9907 | practice. */ | |
9908 | if (DW_UNSND (&attr) == DW_CC_program | |
9909 | && cu->language == language_fortran) | |
01f8c46d JK |
9910 | { |
9911 | set_main_name (part_die->name); | |
9912 | ||
9913 | /* As this DIE has a static linkage the name would be difficult | |
9914 | to look up later. */ | |
9915 | language_of_main = language_fortran; | |
9916 | } | |
68511cec | 9917 | break; |
c906108c SS |
9918 | default: |
9919 | break; | |
9920 | } | |
9921 | } | |
9922 | ||
9373cf26 JK |
9923 | if (has_low_pc_attr && has_high_pc_attr) |
9924 | { | |
9925 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
9926 | eliminate duplicate copies of functions and vtables and such. | |
9927 | The linker will arbitrarily choose one and discard the others. | |
9928 | The AT_*_pc values for such functions refer to local labels in | |
9929 | these sections. If the section from that file was discarded, the | |
9930 | labels are not in the output, so the relocs get a value of 0. | |
9931 | If this is a discarded function, mark the pc bounds as invalid, | |
9932 | so that GDB will ignore it. */ | |
9933 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
9934 | { | |
bb5ed363 | 9935 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
9936 | |
9937 | complaint (&symfile_complaints, | |
9938 | _("DW_AT_low_pc %s is zero " | |
9939 | "for DIE at 0x%x [in module %s]"), | |
9940 | paddress (gdbarch, part_die->lowpc), | |
bb5ed363 | 9941 | part_die->offset, objfile->name); |
9373cf26 JK |
9942 | } |
9943 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
9944 | else if (part_die->lowpc >= part_die->highpc) | |
9945 | { | |
bb5ed363 | 9946 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 JK |
9947 | |
9948 | complaint (&symfile_complaints, | |
9949 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
9950 | "for DIE at 0x%x [in module %s]"), | |
9951 | paddress (gdbarch, part_die->lowpc), | |
9952 | paddress (gdbarch, part_die->highpc), | |
bb5ed363 | 9953 | part_die->offset, objfile->name); |
9373cf26 JK |
9954 | } |
9955 | else | |
9956 | part_die->has_pc_info = 1; | |
9957 | } | |
85cbf3d3 | 9958 | |
c906108c SS |
9959 | return info_ptr; |
9960 | } | |
9961 | ||
72bf9492 DJ |
9962 | /* Find a cached partial DIE at OFFSET in CU. */ |
9963 | ||
9964 | static struct partial_die_info * | |
c764a876 | 9965 | find_partial_die_in_comp_unit (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
9966 | { |
9967 | struct partial_die_info *lookup_die = NULL; | |
9968 | struct partial_die_info part_die; | |
9969 | ||
9970 | part_die.offset = offset; | |
9971 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
9972 | ||
72bf9492 DJ |
9973 | return lookup_die; |
9974 | } | |
9975 | ||
348e048f DE |
9976 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
9977 | except in the case of .debug_types DIEs which do not reference | |
9978 | outside their CU (they do however referencing other types via | |
55f1336d | 9979 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
9980 | |
9981 | static struct partial_die_info * | |
c764a876 | 9982 | find_partial_die (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 | 9983 | { |
bb5ed363 | 9984 | struct objfile *objfile = cu->objfile; |
5afb4e99 DJ |
9985 | struct dwarf2_per_cu_data *per_cu = NULL; |
9986 | struct partial_die_info *pd = NULL; | |
72bf9492 | 9987 | |
b0df02fd | 9988 | if (cu->per_cu->debug_types_section) |
348e048f DE |
9989 | { |
9990 | pd = find_partial_die_in_comp_unit (offset, cu); | |
9991 | if (pd != NULL) | |
9992 | return pd; | |
9993 | goto not_found; | |
9994 | } | |
9995 | ||
45452591 | 9996 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
9997 | { |
9998 | pd = find_partial_die_in_comp_unit (offset, cu); | |
9999 | if (pd != NULL) | |
10000 | return pd; | |
10001 | } | |
72bf9492 | 10002 | |
bb5ed363 | 10003 | per_cu = dwarf2_find_containing_comp_unit (offset, objfile); |
ae038cb0 | 10004 | |
98bfdba5 | 10005 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
a0f42c21 | 10006 | load_partial_comp_unit (per_cu); |
ae038cb0 DJ |
10007 | |
10008 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
10009 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
10010 | ||
10011 | if (pd == NULL && per_cu->load_all_dies == 0) | |
10012 | { | |
10013 | struct cleanup *back_to; | |
10014 | struct partial_die_info comp_unit_die; | |
10015 | struct abbrev_info *abbrev; | |
10016 | unsigned int bytes_read; | |
10017 | char *info_ptr; | |
10018 | ||
10019 | per_cu->load_all_dies = 1; | |
10020 | ||
10021 | /* Re-read the DIEs. */ | |
10022 | back_to = make_cleanup (null_cleanup, 0); | |
10023 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
10024 | { | |
bb5ed363 | 10025 | dwarf2_read_abbrevs (objfile->obfd, per_cu->cu); |
53d72f98 | 10026 | make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); |
5afb4e99 | 10027 | } |
dce234bc | 10028 | info_ptr = (dwarf2_per_objfile->info.buffer |
d00adf39 DE |
10029 | + per_cu->cu->header.offset |
10030 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
10031 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
10032 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
bb5ed363 | 10033 | objfile->obfd, |
93311388 | 10034 | dwarf2_per_objfile->info.buffer, info_ptr, |
5afb4e99 DJ |
10035 | per_cu->cu); |
10036 | if (comp_unit_die.has_children) | |
bb5ed363 | 10037 | load_partial_dies (objfile->obfd, |
93311388 DE |
10038 | dwarf2_per_objfile->info.buffer, info_ptr, |
10039 | 0, per_cu->cu); | |
5afb4e99 DJ |
10040 | do_cleanups (back_to); |
10041 | ||
10042 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
10043 | } | |
10044 | ||
348e048f DE |
10045 | not_found: |
10046 | ||
5afb4e99 DJ |
10047 | if (pd == NULL) |
10048 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
10049 | _("could not find partial DIE 0x%x " |
10050 | "in cache [from module %s]\n"), | |
bb5ed363 | 10051 | offset, bfd_get_filename (objfile->obfd)); |
5afb4e99 | 10052 | return pd; |
72bf9492 DJ |
10053 | } |
10054 | ||
abc72ce4 DE |
10055 | /* See if we can figure out if the class lives in a namespace. We do |
10056 | this by looking for a member function; its demangled name will | |
10057 | contain namespace info, if there is any. */ | |
10058 | ||
10059 | static void | |
10060 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
10061 | struct dwarf2_cu *cu) | |
10062 | { | |
10063 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
10064 | what template types look like, because the demangler | |
10065 | frequently doesn't give the same name as the debug info. We | |
10066 | could fix this by only using the demangled name to get the | |
10067 | prefix (but see comment in read_structure_type). */ | |
10068 | ||
10069 | struct partial_die_info *real_pdi; | |
10070 | struct partial_die_info *child_pdi; | |
10071 | ||
10072 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
10073 | we should not do this. We'll prepend the parent's fully qualified | |
10074 | name when we create the partial symbol. */ | |
10075 | ||
10076 | real_pdi = struct_pdi; | |
10077 | while (real_pdi->has_specification) | |
10078 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); | |
10079 | ||
10080 | if (real_pdi->die_parent != NULL) | |
10081 | return; | |
10082 | ||
10083 | for (child_pdi = struct_pdi->die_child; | |
10084 | child_pdi != NULL; | |
10085 | child_pdi = child_pdi->die_sibling) | |
10086 | { | |
10087 | if (child_pdi->tag == DW_TAG_subprogram | |
10088 | && child_pdi->linkage_name != NULL) | |
10089 | { | |
10090 | char *actual_class_name | |
10091 | = language_class_name_from_physname (cu->language_defn, | |
10092 | child_pdi->linkage_name); | |
10093 | if (actual_class_name != NULL) | |
10094 | { | |
10095 | struct_pdi->name | |
10096 | = obsavestring (actual_class_name, | |
10097 | strlen (actual_class_name), | |
10098 | &cu->objfile->objfile_obstack); | |
10099 | xfree (actual_class_name); | |
10100 | } | |
10101 | break; | |
10102 | } | |
10103 | } | |
10104 | } | |
10105 | ||
72bf9492 DJ |
10106 | /* Adjust PART_DIE before generating a symbol for it. This function |
10107 | may set the is_external flag or change the DIE's name. */ | |
10108 | ||
10109 | static void | |
10110 | fixup_partial_die (struct partial_die_info *part_die, | |
10111 | struct dwarf2_cu *cu) | |
10112 | { | |
abc72ce4 DE |
10113 | /* Once we've fixed up a die, there's no point in doing so again. |
10114 | This also avoids a memory leak if we were to call | |
10115 | guess_partial_die_structure_name multiple times. */ | |
10116 | if (part_die->fixup_called) | |
10117 | return; | |
10118 | ||
72bf9492 DJ |
10119 | /* If we found a reference attribute and the DIE has no name, try |
10120 | to find a name in the referred to DIE. */ | |
10121 | ||
10122 | if (part_die->name == NULL && part_die->has_specification) | |
10123 | { | |
10124 | struct partial_die_info *spec_die; | |
72bf9492 | 10125 | |
10b3939b | 10126 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 10127 | |
10b3939b | 10128 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
10129 | |
10130 | if (spec_die->name) | |
10131 | { | |
10132 | part_die->name = spec_die->name; | |
10133 | ||
10134 | /* Copy DW_AT_external attribute if it is set. */ | |
10135 | if (spec_die->is_external) | |
10136 | part_die->is_external = spec_die->is_external; | |
10137 | } | |
10138 | } | |
10139 | ||
10140 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
10141 | |
10142 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
2b1dbab0 | 10143 | part_die->name = CP_ANONYMOUS_NAMESPACE_STR; |
72bf9492 | 10144 | |
abc72ce4 DE |
10145 | /* If there is no parent die to provide a namespace, and there are |
10146 | children, see if we can determine the namespace from their linkage | |
10147 | name. | |
10148 | NOTE: We need to do this even if cu->has_namespace_info != 0. | |
10149 | gcc-4.5 -gdwarf-4 can drop the enclosing namespace. */ | |
10150 | if (cu->language == language_cplus | |
8b70b953 | 10151 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
10152 | && part_die->die_parent == NULL |
10153 | && part_die->has_children | |
10154 | && (part_die->tag == DW_TAG_class_type | |
10155 | || part_die->tag == DW_TAG_structure_type | |
10156 | || part_die->tag == DW_TAG_union_type)) | |
10157 | guess_partial_die_structure_name (part_die, cu); | |
10158 | ||
53832f31 TT |
10159 | /* GCC might emit a nameless struct or union that has a linkage |
10160 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
10161 | if (part_die->name == NULL | |
96408a79 SA |
10162 | && (part_die->tag == DW_TAG_class_type |
10163 | || part_die->tag == DW_TAG_interface_type | |
10164 | || part_die->tag == DW_TAG_structure_type | |
10165 | || part_die->tag == DW_TAG_union_type) | |
53832f31 TT |
10166 | && part_die->linkage_name != NULL) |
10167 | { | |
10168 | char *demangled; | |
10169 | ||
10170 | demangled = cplus_demangle (part_die->linkage_name, DMGL_TYPES); | |
10171 | if (demangled) | |
10172 | { | |
96408a79 SA |
10173 | const char *base; |
10174 | ||
10175 | /* Strip any leading namespaces/classes, keep only the base name. | |
10176 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
10177 | base = strrchr (demangled, ':'); | |
10178 | if (base && base > demangled && base[-1] == ':') | |
10179 | base++; | |
10180 | else | |
10181 | base = demangled; | |
10182 | ||
10183 | part_die->name = obsavestring (base, strlen (base), | |
53832f31 TT |
10184 | &cu->objfile->objfile_obstack); |
10185 | xfree (demangled); | |
10186 | } | |
10187 | } | |
10188 | ||
abc72ce4 | 10189 | part_die->fixup_called = 1; |
72bf9492 DJ |
10190 | } |
10191 | ||
a8329558 | 10192 | /* Read an attribute value described by an attribute form. */ |
c906108c | 10193 | |
fe1b8b76 | 10194 | static gdb_byte * |
a8329558 | 10195 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 10196 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 10197 | struct dwarf2_cu *cu) |
c906108c | 10198 | { |
e7c27a73 | 10199 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
10200 | unsigned int bytes_read; |
10201 | struct dwarf_block *blk; | |
10202 | ||
a8329558 KW |
10203 | attr->form = form; |
10204 | switch (form) | |
c906108c | 10205 | { |
c906108c | 10206 | case DW_FORM_ref_addr: |
ae411497 TT |
10207 | if (cu->header.version == 2) |
10208 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); | |
10209 | else | |
3e43a32a MS |
10210 | DW_ADDR (attr) = read_offset (abfd, info_ptr, |
10211 | &cu->header, &bytes_read); | |
ae411497 TT |
10212 | info_ptr += bytes_read; |
10213 | break; | |
10214 | case DW_FORM_addr: | |
e7c27a73 | 10215 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 10216 | info_ptr += bytes_read; |
c906108c SS |
10217 | break; |
10218 | case DW_FORM_block2: | |
7b5a2f43 | 10219 | blk = dwarf_alloc_block (cu); |
c906108c SS |
10220 | blk->size = read_2_bytes (abfd, info_ptr); |
10221 | info_ptr += 2; | |
10222 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
10223 | info_ptr += blk->size; | |
10224 | DW_BLOCK (attr) = blk; | |
10225 | break; | |
10226 | case DW_FORM_block4: | |
7b5a2f43 | 10227 | blk = dwarf_alloc_block (cu); |
c906108c SS |
10228 | blk->size = read_4_bytes (abfd, info_ptr); |
10229 | info_ptr += 4; | |
10230 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
10231 | info_ptr += blk->size; | |
10232 | DW_BLOCK (attr) = blk; | |
10233 | break; | |
10234 | case DW_FORM_data2: | |
10235 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
10236 | info_ptr += 2; | |
10237 | break; | |
10238 | case DW_FORM_data4: | |
10239 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
10240 | info_ptr += 4; | |
10241 | break; | |
10242 | case DW_FORM_data8: | |
10243 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
10244 | info_ptr += 8; | |
10245 | break; | |
2dc7f7b3 TT |
10246 | case DW_FORM_sec_offset: |
10247 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
10248 | info_ptr += bytes_read; | |
10249 | break; | |
c906108c | 10250 | case DW_FORM_string: |
9b1c24c8 | 10251 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 10252 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
10253 | info_ptr += bytes_read; |
10254 | break; | |
4bdf3d34 JJ |
10255 | case DW_FORM_strp: |
10256 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
10257 | &bytes_read); | |
8285870a | 10258 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
10259 | info_ptr += bytes_read; |
10260 | break; | |
2dc7f7b3 | 10261 | case DW_FORM_exprloc: |
c906108c | 10262 | case DW_FORM_block: |
7b5a2f43 | 10263 | blk = dwarf_alloc_block (cu); |
c906108c SS |
10264 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
10265 | info_ptr += bytes_read; | |
10266 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
10267 | info_ptr += blk->size; | |
10268 | DW_BLOCK (attr) = blk; | |
10269 | break; | |
10270 | case DW_FORM_block1: | |
7b5a2f43 | 10271 | blk = dwarf_alloc_block (cu); |
c906108c SS |
10272 | blk->size = read_1_byte (abfd, info_ptr); |
10273 | info_ptr += 1; | |
10274 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
10275 | info_ptr += blk->size; | |
10276 | DW_BLOCK (attr) = blk; | |
10277 | break; | |
10278 | case DW_FORM_data1: | |
10279 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
10280 | info_ptr += 1; | |
10281 | break; | |
10282 | case DW_FORM_flag: | |
10283 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
10284 | info_ptr += 1; | |
10285 | break; | |
2dc7f7b3 TT |
10286 | case DW_FORM_flag_present: |
10287 | DW_UNSND (attr) = 1; | |
10288 | break; | |
c906108c SS |
10289 | case DW_FORM_sdata: |
10290 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
10291 | info_ptr += bytes_read; | |
10292 | break; | |
10293 | case DW_FORM_udata: | |
10294 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
10295 | info_ptr += bytes_read; | |
10296 | break; | |
10297 | case DW_FORM_ref1: | |
10b3939b | 10298 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
10299 | info_ptr += 1; |
10300 | break; | |
10301 | case DW_FORM_ref2: | |
10b3939b | 10302 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
10303 | info_ptr += 2; |
10304 | break; | |
10305 | case DW_FORM_ref4: | |
10b3939b | 10306 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
10307 | info_ptr += 4; |
10308 | break; | |
613e1657 | 10309 | case DW_FORM_ref8: |
10b3939b | 10310 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
10311 | info_ptr += 8; |
10312 | break; | |
55f1336d | 10313 | case DW_FORM_ref_sig8: |
348e048f DE |
10314 | /* Convert the signature to something we can record in DW_UNSND |
10315 | for later lookup. | |
10316 | NOTE: This is NULL if the type wasn't found. */ | |
10317 | DW_SIGNATURED_TYPE (attr) = | |
10318 | lookup_signatured_type (cu->objfile, read_8_bytes (abfd, info_ptr)); | |
10319 | info_ptr += 8; | |
10320 | break; | |
c906108c | 10321 | case DW_FORM_ref_udata: |
10b3939b DJ |
10322 | DW_ADDR (attr) = (cu->header.offset |
10323 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
10324 | info_ptr += bytes_read; |
10325 | break; | |
c906108c | 10326 | case DW_FORM_indirect: |
a8329558 KW |
10327 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
10328 | info_ptr += bytes_read; | |
e7c27a73 | 10329 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 10330 | break; |
c906108c | 10331 | default: |
8a3fe4f8 | 10332 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
10333 | dwarf_form_name (form), |
10334 | bfd_get_filename (abfd)); | |
c906108c | 10335 | } |
28e94949 JB |
10336 | |
10337 | /* We have seen instances where the compiler tried to emit a byte | |
10338 | size attribute of -1 which ended up being encoded as an unsigned | |
10339 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
10340 | an object of this size seems pretty unlikely so we can relatively | |
10341 | safely treat these cases as if the size attribute was invalid and | |
10342 | treat them as zero by default. */ | |
10343 | if (attr->name == DW_AT_byte_size | |
10344 | && form == DW_FORM_data4 | |
10345 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
10346 | { |
10347 | complaint | |
10348 | (&symfile_complaints, | |
43bbcdc2 PH |
10349 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
10350 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
10351 | DW_UNSND (attr) = 0; |
10352 | } | |
28e94949 | 10353 | |
c906108c SS |
10354 | return info_ptr; |
10355 | } | |
10356 | ||
a8329558 KW |
10357 | /* Read an attribute described by an abbreviated attribute. */ |
10358 | ||
fe1b8b76 | 10359 | static gdb_byte * |
a8329558 | 10360 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 10361 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
10362 | { |
10363 | attr->name = abbrev->name; | |
e7c27a73 | 10364 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
10365 | } |
10366 | ||
0963b4bd | 10367 | /* Read dwarf information from a buffer. */ |
c906108c SS |
10368 | |
10369 | static unsigned int | |
fe1b8b76 | 10370 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 10371 | { |
fe1b8b76 | 10372 | return bfd_get_8 (abfd, buf); |
c906108c SS |
10373 | } |
10374 | ||
10375 | static int | |
fe1b8b76 | 10376 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 10377 | { |
fe1b8b76 | 10378 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
10379 | } |
10380 | ||
10381 | static unsigned int | |
fe1b8b76 | 10382 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 10383 | { |
fe1b8b76 | 10384 | return bfd_get_16 (abfd, buf); |
c906108c SS |
10385 | } |
10386 | ||
21ae7a4d JK |
10387 | static int |
10388 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) | |
10389 | { | |
10390 | return bfd_get_signed_16 (abfd, buf); | |
10391 | } | |
10392 | ||
c906108c | 10393 | static unsigned int |
fe1b8b76 | 10394 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 10395 | { |
fe1b8b76 | 10396 | return bfd_get_32 (abfd, buf); |
c906108c SS |
10397 | } |
10398 | ||
21ae7a4d JK |
10399 | static int |
10400 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) | |
10401 | { | |
10402 | return bfd_get_signed_32 (abfd, buf); | |
10403 | } | |
10404 | ||
93311388 | 10405 | static ULONGEST |
fe1b8b76 | 10406 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 10407 | { |
fe1b8b76 | 10408 | return bfd_get_64 (abfd, buf); |
c906108c SS |
10409 | } |
10410 | ||
10411 | static CORE_ADDR | |
fe1b8b76 | 10412 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 10413 | unsigned int *bytes_read) |
c906108c | 10414 | { |
e7c27a73 | 10415 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
10416 | CORE_ADDR retval = 0; |
10417 | ||
107d2387 | 10418 | if (cu_header->signed_addr_p) |
c906108c | 10419 | { |
107d2387 AC |
10420 | switch (cu_header->addr_size) |
10421 | { | |
10422 | case 2: | |
fe1b8b76 | 10423 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
10424 | break; |
10425 | case 4: | |
fe1b8b76 | 10426 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
10427 | break; |
10428 | case 8: | |
fe1b8b76 | 10429 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
10430 | break; |
10431 | default: | |
8e65ff28 | 10432 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10433 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 10434 | bfd_get_filename (abfd)); |
107d2387 AC |
10435 | } |
10436 | } | |
10437 | else | |
10438 | { | |
10439 | switch (cu_header->addr_size) | |
10440 | { | |
10441 | case 2: | |
fe1b8b76 | 10442 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
10443 | break; |
10444 | case 4: | |
fe1b8b76 | 10445 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
10446 | break; |
10447 | case 8: | |
fe1b8b76 | 10448 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
10449 | break; |
10450 | default: | |
8e65ff28 | 10451 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
10452 | _("read_address: bad switch, " |
10453 | "unsigned [in module %s]"), | |
659b0389 | 10454 | bfd_get_filename (abfd)); |
107d2387 | 10455 | } |
c906108c | 10456 | } |
64367e0a | 10457 | |
107d2387 AC |
10458 | *bytes_read = cu_header->addr_size; |
10459 | return retval; | |
c906108c SS |
10460 | } |
10461 | ||
f7ef9339 | 10462 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
10463 | specification allows the initial length to take up either 4 bytes |
10464 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
10465 | bytes describe the length and all offsets will be 8 bytes in length | |
10466 | instead of 4. | |
10467 | ||
f7ef9339 KB |
10468 | An older, non-standard 64-bit format is also handled by this |
10469 | function. The older format in question stores the initial length | |
10470 | as an 8-byte quantity without an escape value. Lengths greater | |
10471 | than 2^32 aren't very common which means that the initial 4 bytes | |
10472 | is almost always zero. Since a length value of zero doesn't make | |
10473 | sense for the 32-bit format, this initial zero can be considered to | |
10474 | be an escape value which indicates the presence of the older 64-bit | |
10475 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
10476 | greater than 4GB. If it becomes necessary to handle lengths |
10477 | somewhat larger than 4GB, we could allow other small values (such | |
10478 | as the non-sensical values of 1, 2, and 3) to also be used as | |
10479 | escape values indicating the presence of the old format. | |
f7ef9339 | 10480 | |
917c78fc MK |
10481 | The value returned via bytes_read should be used to increment the |
10482 | relevant pointer after calling read_initial_length(). | |
c764a876 | 10483 | |
613e1657 KB |
10484 | [ Note: read_initial_length() and read_offset() are based on the |
10485 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 10486 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
10487 | from: |
10488 | ||
f7ef9339 | 10489 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 10490 | |
613e1657 KB |
10491 | This document is only a draft and is subject to change. (So beware.) |
10492 | ||
f7ef9339 | 10493 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
10494 | determined empirically by examining 64-bit ELF files produced by |
10495 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
10496 | |
10497 | - Kevin, July 16, 2002 | |
613e1657 KB |
10498 | ] */ |
10499 | ||
10500 | static LONGEST | |
c764a876 | 10501 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 10502 | { |
fe1b8b76 | 10503 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 10504 | |
dd373385 | 10505 | if (length == 0xffffffff) |
613e1657 | 10506 | { |
fe1b8b76 | 10507 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 10508 | *bytes_read = 12; |
613e1657 | 10509 | } |
dd373385 | 10510 | else if (length == 0) |
f7ef9339 | 10511 | { |
dd373385 | 10512 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 10513 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 10514 | *bytes_read = 8; |
f7ef9339 | 10515 | } |
613e1657 KB |
10516 | else |
10517 | { | |
10518 | *bytes_read = 4; | |
613e1657 KB |
10519 | } |
10520 | ||
c764a876 DE |
10521 | return length; |
10522 | } | |
dd373385 | 10523 | |
c764a876 DE |
10524 | /* Cover function for read_initial_length. |
10525 | Returns the length of the object at BUF, and stores the size of the | |
10526 | initial length in *BYTES_READ and stores the size that offsets will be in | |
10527 | *OFFSET_SIZE. | |
10528 | If the initial length size is not equivalent to that specified in | |
10529 | CU_HEADER then issue a complaint. | |
10530 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 10531 | |
c764a876 DE |
10532 | static LONGEST |
10533 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
10534 | const struct comp_unit_head *cu_header, | |
10535 | unsigned int *bytes_read, | |
10536 | unsigned int *offset_size) | |
10537 | { | |
10538 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
10539 | ||
10540 | gdb_assert (cu_header->initial_length_size == 4 | |
10541 | || cu_header->initial_length_size == 8 | |
10542 | || cu_header->initial_length_size == 12); | |
10543 | ||
10544 | if (cu_header->initial_length_size != *bytes_read) | |
10545 | complaint (&symfile_complaints, | |
10546 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 10547 | |
c764a876 | 10548 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 10549 | return length; |
613e1657 KB |
10550 | } |
10551 | ||
10552 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 10553 | given by cu_header->offset_size. */ |
613e1657 KB |
10554 | |
10555 | static LONGEST | |
fe1b8b76 | 10556 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 10557 | unsigned int *bytes_read) |
c764a876 DE |
10558 | { |
10559 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 10560 | |
c764a876 DE |
10561 | *bytes_read = cu_header->offset_size; |
10562 | return offset; | |
10563 | } | |
10564 | ||
10565 | /* Read an offset from the data stream. */ | |
10566 | ||
10567 | static LONGEST | |
10568 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
10569 | { |
10570 | LONGEST retval = 0; | |
10571 | ||
c764a876 | 10572 | switch (offset_size) |
613e1657 KB |
10573 | { |
10574 | case 4: | |
fe1b8b76 | 10575 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
10576 | break; |
10577 | case 8: | |
fe1b8b76 | 10578 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
10579 | break; |
10580 | default: | |
8e65ff28 | 10581 | internal_error (__FILE__, __LINE__, |
c764a876 | 10582 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 10583 | bfd_get_filename (abfd)); |
613e1657 KB |
10584 | } |
10585 | ||
917c78fc | 10586 | return retval; |
613e1657 KB |
10587 | } |
10588 | ||
fe1b8b76 JB |
10589 | static gdb_byte * |
10590 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
10591 | { |
10592 | /* If the size of a host char is 8 bits, we can return a pointer | |
10593 | to the buffer, otherwise we have to copy the data to a buffer | |
10594 | allocated on the temporary obstack. */ | |
4bdf3d34 | 10595 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 10596 | return buf; |
c906108c SS |
10597 | } |
10598 | ||
10599 | static char * | |
9b1c24c8 | 10600 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
10601 | { |
10602 | /* If the size of a host char is 8 bits, we can return a pointer | |
10603 | to the string, otherwise we have to copy the string to a buffer | |
10604 | allocated on the temporary obstack. */ | |
4bdf3d34 | 10605 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
10606 | if (*buf == '\0') |
10607 | { | |
10608 | *bytes_read_ptr = 1; | |
10609 | return NULL; | |
10610 | } | |
fe1b8b76 JB |
10611 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
10612 | return (char *) buf; | |
4bdf3d34 JJ |
10613 | } |
10614 | ||
10615 | static char * | |
cf2c3c16 | 10616 | read_indirect_string_at_offset (bfd *abfd, LONGEST str_offset) |
4bdf3d34 | 10617 | { |
be391dca | 10618 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 10619 | if (dwarf2_per_objfile->str.buffer == NULL) |
cf2c3c16 TT |
10620 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
10621 | bfd_get_filename (abfd)); | |
dce234bc | 10622 | if (str_offset >= dwarf2_per_objfile->str.size) |
cf2c3c16 TT |
10623 | error (_("DW_FORM_strp pointing outside of " |
10624 | ".debug_str section [in module %s]"), | |
10625 | bfd_get_filename (abfd)); | |
4bdf3d34 | 10626 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 10627 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 10628 | return NULL; |
dce234bc | 10629 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
10630 | } |
10631 | ||
cf2c3c16 TT |
10632 | static char * |
10633 | read_indirect_string (bfd *abfd, gdb_byte *buf, | |
10634 | const struct comp_unit_head *cu_header, | |
10635 | unsigned int *bytes_read_ptr) | |
10636 | { | |
10637 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
10638 | ||
10639 | return read_indirect_string_at_offset (abfd, str_offset); | |
10640 | } | |
10641 | ||
ce5d95e1 | 10642 | static unsigned long |
fe1b8b76 | 10643 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 10644 | { |
ce5d95e1 JB |
10645 | unsigned long result; |
10646 | unsigned int num_read; | |
c906108c SS |
10647 | int i, shift; |
10648 | unsigned char byte; | |
10649 | ||
10650 | result = 0; | |
10651 | shift = 0; | |
10652 | num_read = 0; | |
10653 | i = 0; | |
10654 | while (1) | |
10655 | { | |
fe1b8b76 | 10656 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
10657 | buf++; |
10658 | num_read++; | |
ce5d95e1 | 10659 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
10660 | if ((byte & 128) == 0) |
10661 | { | |
10662 | break; | |
10663 | } | |
10664 | shift += 7; | |
10665 | } | |
10666 | *bytes_read_ptr = num_read; | |
10667 | return result; | |
10668 | } | |
10669 | ||
ce5d95e1 | 10670 | static long |
fe1b8b76 | 10671 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 10672 | { |
ce5d95e1 | 10673 | long result; |
77e0b926 | 10674 | int i, shift, num_read; |
c906108c SS |
10675 | unsigned char byte; |
10676 | ||
10677 | result = 0; | |
10678 | shift = 0; | |
c906108c SS |
10679 | num_read = 0; |
10680 | i = 0; | |
10681 | while (1) | |
10682 | { | |
fe1b8b76 | 10683 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
10684 | buf++; |
10685 | num_read++; | |
ce5d95e1 | 10686 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
10687 | shift += 7; |
10688 | if ((byte & 128) == 0) | |
10689 | { | |
10690 | break; | |
10691 | } | |
10692 | } | |
77e0b926 DJ |
10693 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
10694 | result |= -(((long)1) << shift); | |
c906108c SS |
10695 | *bytes_read_ptr = num_read; |
10696 | return result; | |
10697 | } | |
10698 | ||
4bb7a0a7 DJ |
10699 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
10700 | ||
fe1b8b76 JB |
10701 | static gdb_byte * |
10702 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
10703 | { |
10704 | int byte; | |
10705 | ||
10706 | while (1) | |
10707 | { | |
fe1b8b76 | 10708 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
10709 | buf++; |
10710 | if ((byte & 128) == 0) | |
10711 | return buf; | |
10712 | } | |
10713 | } | |
10714 | ||
c906108c | 10715 | static void |
e142c38c | 10716 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
10717 | { |
10718 | switch (lang) | |
10719 | { | |
10720 | case DW_LANG_C89: | |
76bee0cc | 10721 | case DW_LANG_C99: |
c906108c | 10722 | case DW_LANG_C: |
e142c38c | 10723 | cu->language = language_c; |
c906108c SS |
10724 | break; |
10725 | case DW_LANG_C_plus_plus: | |
e142c38c | 10726 | cu->language = language_cplus; |
c906108c | 10727 | break; |
6aecb9c2 JB |
10728 | case DW_LANG_D: |
10729 | cu->language = language_d; | |
10730 | break; | |
c906108c SS |
10731 | case DW_LANG_Fortran77: |
10732 | case DW_LANG_Fortran90: | |
b21b22e0 | 10733 | case DW_LANG_Fortran95: |
e142c38c | 10734 | cu->language = language_fortran; |
c906108c SS |
10735 | break; |
10736 | case DW_LANG_Mips_Assembler: | |
e142c38c | 10737 | cu->language = language_asm; |
c906108c | 10738 | break; |
bebd888e | 10739 | case DW_LANG_Java: |
e142c38c | 10740 | cu->language = language_java; |
bebd888e | 10741 | break; |
c906108c | 10742 | case DW_LANG_Ada83: |
8aaf0b47 | 10743 | case DW_LANG_Ada95: |
bc5f45f8 JB |
10744 | cu->language = language_ada; |
10745 | break; | |
72019c9c GM |
10746 | case DW_LANG_Modula2: |
10747 | cu->language = language_m2; | |
10748 | break; | |
fe8e67fd PM |
10749 | case DW_LANG_Pascal83: |
10750 | cu->language = language_pascal; | |
10751 | break; | |
22566fbd DJ |
10752 | case DW_LANG_ObjC: |
10753 | cu->language = language_objc; | |
10754 | break; | |
c906108c SS |
10755 | case DW_LANG_Cobol74: |
10756 | case DW_LANG_Cobol85: | |
c906108c | 10757 | default: |
e142c38c | 10758 | cu->language = language_minimal; |
c906108c SS |
10759 | break; |
10760 | } | |
e142c38c | 10761 | cu->language_defn = language_def (cu->language); |
c906108c SS |
10762 | } |
10763 | ||
10764 | /* Return the named attribute or NULL if not there. */ | |
10765 | ||
10766 | static struct attribute * | |
e142c38c | 10767 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
10768 | { |
10769 | unsigned int i; | |
10770 | struct attribute *spec = NULL; | |
10771 | ||
10772 | for (i = 0; i < die->num_attrs; ++i) | |
10773 | { | |
10774 | if (die->attrs[i].name == name) | |
10b3939b | 10775 | return &die->attrs[i]; |
c906108c SS |
10776 | if (die->attrs[i].name == DW_AT_specification |
10777 | || die->attrs[i].name == DW_AT_abstract_origin) | |
10778 | spec = &die->attrs[i]; | |
10779 | } | |
c906108c | 10780 | |
10b3939b | 10781 | if (spec) |
f2f0e013 DJ |
10782 | { |
10783 | die = follow_die_ref (die, spec, &cu); | |
10784 | return dwarf2_attr (die, name, cu); | |
10785 | } | |
c5aa993b | 10786 | |
c906108c SS |
10787 | return NULL; |
10788 | } | |
10789 | ||
348e048f DE |
10790 | /* Return the named attribute or NULL if not there, |
10791 | but do not follow DW_AT_specification, etc. | |
10792 | This is for use in contexts where we're reading .debug_types dies. | |
10793 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
10794 | back up the chain, and we want to go down. */ | |
10795 | ||
10796 | static struct attribute * | |
10797 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
10798 | struct dwarf2_cu *cu) | |
10799 | { | |
10800 | unsigned int i; | |
10801 | ||
10802 | for (i = 0; i < die->num_attrs; ++i) | |
10803 | if (die->attrs[i].name == name) | |
10804 | return &die->attrs[i]; | |
10805 | ||
10806 | return NULL; | |
10807 | } | |
10808 | ||
05cf31d1 JB |
10809 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
10810 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 10811 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
10812 | |
10813 | static int | |
10814 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
10815 | { | |
10816 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
10817 | ||
10818 | return (attr && DW_UNSND (attr)); | |
10819 | } | |
10820 | ||
3ca72b44 | 10821 | static int |
e142c38c | 10822 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 10823 | { |
05cf31d1 JB |
10824 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
10825 | which value is non-zero. However, we have to be careful with | |
10826 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
10827 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
10828 | end up accidently finding a declaration attribute that belongs | |
10829 | to a different DIE referenced by the specification attribute, | |
10830 | even though the given DIE does not have a declaration attribute. */ | |
10831 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
10832 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
10833 | } |
10834 | ||
63d06c5c | 10835 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 10836 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
10837 | containing the return value on output. If there is no |
10838 | specification, but there is an abstract origin, that is | |
10839 | returned. */ | |
63d06c5c DC |
10840 | |
10841 | static struct die_info * | |
f2f0e013 | 10842 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 10843 | { |
f2f0e013 DJ |
10844 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
10845 | *spec_cu); | |
63d06c5c | 10846 | |
edb3359d DJ |
10847 | if (spec_attr == NULL) |
10848 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
10849 | ||
63d06c5c DC |
10850 | if (spec_attr == NULL) |
10851 | return NULL; | |
10852 | else | |
f2f0e013 | 10853 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 10854 | } |
c906108c | 10855 | |
debd256d | 10856 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
10857 | refers to. |
10858 | NOTE: This is also used as a "cleanup" function. */ | |
10859 | ||
debd256d JB |
10860 | static void |
10861 | free_line_header (struct line_header *lh) | |
10862 | { | |
10863 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 10864 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
10865 | |
10866 | /* Remember that all the lh->file_names[i].name pointers are | |
10867 | pointers into debug_line_buffer, and don't need to be freed. */ | |
10868 | if (lh->file_names) | |
a8bc7b56 | 10869 | xfree (lh->file_names); |
debd256d JB |
10870 | |
10871 | /* Similarly for the include directory names. */ | |
10872 | if (lh->include_dirs) | |
a8bc7b56 | 10873 | xfree (lh->include_dirs); |
debd256d | 10874 | |
a8bc7b56 | 10875 | xfree (lh); |
debd256d JB |
10876 | } |
10877 | ||
debd256d | 10878 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 10879 | |
debd256d JB |
10880 | static void |
10881 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 10882 | { |
debd256d JB |
10883 | /* Grow the array if necessary. */ |
10884 | if (lh->include_dirs_size == 0) | |
c5aa993b | 10885 | { |
debd256d JB |
10886 | lh->include_dirs_size = 1; /* for testing */ |
10887 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
10888 | * sizeof (*lh->include_dirs)); | |
10889 | } | |
10890 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
10891 | { | |
10892 | lh->include_dirs_size *= 2; | |
10893 | lh->include_dirs = xrealloc (lh->include_dirs, | |
10894 | (lh->include_dirs_size | |
10895 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 10896 | } |
c906108c | 10897 | |
debd256d JB |
10898 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
10899 | } | |
6e70227d | 10900 | |
debd256d | 10901 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 10902 | |
debd256d JB |
10903 | static void |
10904 | add_file_name (struct line_header *lh, | |
10905 | char *name, | |
10906 | unsigned int dir_index, | |
10907 | unsigned int mod_time, | |
10908 | unsigned int length) | |
10909 | { | |
10910 | struct file_entry *fe; | |
10911 | ||
10912 | /* Grow the array if necessary. */ | |
10913 | if (lh->file_names_size == 0) | |
10914 | { | |
10915 | lh->file_names_size = 1; /* for testing */ | |
10916 | lh->file_names = xmalloc (lh->file_names_size | |
10917 | * sizeof (*lh->file_names)); | |
10918 | } | |
10919 | else if (lh->num_file_names >= lh->file_names_size) | |
10920 | { | |
10921 | lh->file_names_size *= 2; | |
10922 | lh->file_names = xrealloc (lh->file_names, | |
10923 | (lh->file_names_size | |
10924 | * sizeof (*lh->file_names))); | |
10925 | } | |
10926 | ||
10927 | fe = &lh->file_names[lh->num_file_names++]; | |
10928 | fe->name = name; | |
10929 | fe->dir_index = dir_index; | |
10930 | fe->mod_time = mod_time; | |
10931 | fe->length = length; | |
aaa75496 | 10932 | fe->included_p = 0; |
cb1df416 | 10933 | fe->symtab = NULL; |
debd256d | 10934 | } |
6e70227d | 10935 | |
debd256d | 10936 | /* Read the statement program header starting at OFFSET in |
6502dd73 DJ |
10937 | .debug_line, according to the endianness of ABFD. Return a pointer |
10938 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
10939 | |
10940 | NOTE: the strings in the include directory and file name tables of | |
10941 | the returned object point into debug_line_buffer, and must not be | |
10942 | freed. */ | |
ae2de4f8 | 10943 | |
debd256d JB |
10944 | static struct line_header * |
10945 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 10946 | struct dwarf2_cu *cu) |
debd256d JB |
10947 | { |
10948 | struct cleanup *back_to; | |
10949 | struct line_header *lh; | |
fe1b8b76 | 10950 | gdb_byte *line_ptr; |
c764a876 | 10951 | unsigned int bytes_read, offset_size; |
debd256d JB |
10952 | int i; |
10953 | char *cur_dir, *cur_file; | |
10954 | ||
be391dca | 10955 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->line); |
dce234bc | 10956 | if (dwarf2_per_objfile->line.buffer == NULL) |
debd256d | 10957 | { |
e2e0b3e5 | 10958 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
10959 | return 0; |
10960 | } | |
10961 | ||
a738430d MK |
10962 | /* Make sure that at least there's room for the total_length field. |
10963 | That could be 12 bytes long, but we're just going to fudge that. */ | |
dce234bc | 10964 | if (offset + 4 >= dwarf2_per_objfile->line.size) |
debd256d | 10965 | { |
4d3c2250 | 10966 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
10967 | return 0; |
10968 | } | |
10969 | ||
10970 | lh = xmalloc (sizeof (*lh)); | |
10971 | memset (lh, 0, sizeof (*lh)); | |
10972 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
10973 | (void *) lh); | |
10974 | ||
dce234bc | 10975 | line_ptr = dwarf2_per_objfile->line.buffer + offset; |
debd256d | 10976 | |
a738430d | 10977 | /* Read in the header. */ |
6e70227d | 10978 | lh->total_length = |
c764a876 DE |
10979 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
10980 | &bytes_read, &offset_size); | |
debd256d | 10981 | line_ptr += bytes_read; |
dce234bc PP |
10982 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line.buffer |
10983 | + dwarf2_per_objfile->line.size)) | |
debd256d | 10984 | { |
4d3c2250 | 10985 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
10986 | return 0; |
10987 | } | |
10988 | lh->statement_program_end = line_ptr + lh->total_length; | |
10989 | lh->version = read_2_bytes (abfd, line_ptr); | |
10990 | line_ptr += 2; | |
c764a876 DE |
10991 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
10992 | line_ptr += offset_size; | |
debd256d JB |
10993 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
10994 | line_ptr += 1; | |
2dc7f7b3 TT |
10995 | if (lh->version >= 4) |
10996 | { | |
10997 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
10998 | line_ptr += 1; | |
10999 | } | |
11000 | else | |
11001 | lh->maximum_ops_per_instruction = 1; | |
11002 | ||
11003 | if (lh->maximum_ops_per_instruction == 0) | |
11004 | { | |
11005 | lh->maximum_ops_per_instruction = 1; | |
11006 | complaint (&symfile_complaints, | |
3e43a32a MS |
11007 | _("invalid maximum_ops_per_instruction " |
11008 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
11009 | } |
11010 | ||
debd256d JB |
11011 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
11012 | line_ptr += 1; | |
11013 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
11014 | line_ptr += 1; | |
11015 | lh->line_range = read_1_byte (abfd, line_ptr); | |
11016 | line_ptr += 1; | |
11017 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
11018 | line_ptr += 1; | |
11019 | lh->standard_opcode_lengths | |
fe1b8b76 | 11020 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
11021 | |
11022 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
11023 | for (i = 1; i < lh->opcode_base; ++i) | |
11024 | { | |
11025 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
11026 | line_ptr += 1; | |
11027 | } | |
11028 | ||
a738430d | 11029 | /* Read directory table. */ |
9b1c24c8 | 11030 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
11031 | { |
11032 | line_ptr += bytes_read; | |
11033 | add_include_dir (lh, cur_dir); | |
11034 | } | |
11035 | line_ptr += bytes_read; | |
11036 | ||
a738430d | 11037 | /* Read file name table. */ |
9b1c24c8 | 11038 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
11039 | { |
11040 | unsigned int dir_index, mod_time, length; | |
11041 | ||
11042 | line_ptr += bytes_read; | |
11043 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
11044 | line_ptr += bytes_read; | |
11045 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
11046 | line_ptr += bytes_read; | |
11047 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
11048 | line_ptr += bytes_read; | |
11049 | ||
11050 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
11051 | } | |
11052 | line_ptr += bytes_read; | |
6e70227d | 11053 | lh->statement_program_start = line_ptr; |
debd256d | 11054 | |
dce234bc PP |
11055 | if (line_ptr > (dwarf2_per_objfile->line.buffer |
11056 | + dwarf2_per_objfile->line.size)) | |
4d3c2250 | 11057 | complaint (&symfile_complaints, |
3e43a32a MS |
11058 | _("line number info header doesn't " |
11059 | "fit in `.debug_line' section")); | |
debd256d JB |
11060 | |
11061 | discard_cleanups (back_to); | |
11062 | return lh; | |
11063 | } | |
c906108c | 11064 | |
c6da4cef DE |
11065 | /* Subroutine of dwarf_decode_lines to simplify it. |
11066 | Return the file name of the psymtab for included file FILE_INDEX | |
11067 | in line header LH of PST. | |
11068 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
11069 | If space for the result is malloc'd, it will be freed by a cleanup. | |
11070 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
11071 | ||
11072 | static char * | |
11073 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
11074 | const struct partial_symtab *pst, | |
11075 | const char *comp_dir) | |
11076 | { | |
11077 | const struct file_entry fe = lh->file_names [file_index]; | |
11078 | char *include_name = fe.name; | |
11079 | char *include_name_to_compare = include_name; | |
11080 | char *dir_name = NULL; | |
72b9f47f TT |
11081 | const char *pst_filename; |
11082 | char *copied_name = NULL; | |
c6da4cef DE |
11083 | int file_is_pst; |
11084 | ||
11085 | if (fe.dir_index) | |
11086 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
11087 | ||
11088 | if (!IS_ABSOLUTE_PATH (include_name) | |
11089 | && (dir_name != NULL || comp_dir != NULL)) | |
11090 | { | |
11091 | /* Avoid creating a duplicate psymtab for PST. | |
11092 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
11093 | Before we do the comparison, however, we need to account | |
11094 | for DIR_NAME and COMP_DIR. | |
11095 | First prepend dir_name (if non-NULL). If we still don't | |
11096 | have an absolute path prepend comp_dir (if non-NULL). | |
11097 | However, the directory we record in the include-file's | |
11098 | psymtab does not contain COMP_DIR (to match the | |
11099 | corresponding symtab(s)). | |
11100 | ||
11101 | Example: | |
11102 | ||
11103 | bash$ cd /tmp | |
11104 | bash$ gcc -g ./hello.c | |
11105 | include_name = "hello.c" | |
11106 | dir_name = "." | |
11107 | DW_AT_comp_dir = comp_dir = "/tmp" | |
11108 | DW_AT_name = "./hello.c" */ | |
11109 | ||
11110 | if (dir_name != NULL) | |
11111 | { | |
11112 | include_name = concat (dir_name, SLASH_STRING, | |
11113 | include_name, (char *)NULL); | |
11114 | include_name_to_compare = include_name; | |
11115 | make_cleanup (xfree, include_name); | |
11116 | } | |
11117 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
11118 | { | |
11119 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
11120 | include_name, (char *)NULL); | |
11121 | } | |
11122 | } | |
11123 | ||
11124 | pst_filename = pst->filename; | |
11125 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
11126 | { | |
72b9f47f TT |
11127 | copied_name = concat (pst->dirname, SLASH_STRING, |
11128 | pst_filename, (char *)NULL); | |
11129 | pst_filename = copied_name; | |
c6da4cef DE |
11130 | } |
11131 | ||
1e3fad37 | 11132 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
11133 | |
11134 | if (include_name_to_compare != include_name) | |
11135 | xfree (include_name_to_compare); | |
72b9f47f TT |
11136 | if (copied_name != NULL) |
11137 | xfree (copied_name); | |
c6da4cef DE |
11138 | |
11139 | if (file_is_pst) | |
11140 | return NULL; | |
11141 | return include_name; | |
11142 | } | |
11143 | ||
c91513d8 PP |
11144 | /* Ignore this record_line request. */ |
11145 | ||
11146 | static void | |
11147 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
11148 | { | |
11149 | return; | |
11150 | } | |
11151 | ||
aaa75496 JB |
11152 | /* Decode the Line Number Program (LNP) for the given line_header |
11153 | structure and CU. The actual information extracted and the type | |
11154 | of structures created from the LNP depends on the value of PST. | |
11155 | ||
11156 | 1. If PST is NULL, then this procedure uses the data from the program | |
11157 | to create all necessary symbol tables, and their linetables. | |
6e70227d | 11158 | |
aaa75496 JB |
11159 | 2. If PST is not NULL, this procedure reads the program to determine |
11160 | the list of files included by the unit represented by PST, and | |
c6da4cef DE |
11161 | builds all the associated partial symbol tables. |
11162 | ||
11163 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
11164 | It is used for relative paths in the line table. | |
11165 | NOTE: When processing partial symtabs (pst != NULL), | |
11166 | comp_dir == pst->dirname. | |
11167 | ||
11168 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
11169 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
11170 | symtab we don't use it in the name of the psymtabs we create. | |
11171 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
11172 | A good testcase for this is mb-inline.exp. */ | |
debd256d | 11173 | |
c906108c | 11174 | static void |
72b9f47f | 11175 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, bfd *abfd, |
aaa75496 | 11176 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 11177 | { |
a8c50c1f | 11178 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 11179 | gdb_byte *line_end; |
a8c50c1f | 11180 | unsigned int bytes_read, extended_len; |
c906108c | 11181 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
11182 | CORE_ADDR baseaddr; |
11183 | struct objfile *objfile = cu->objfile; | |
fbf65064 | 11184 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 11185 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 11186 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
c91513d8 PP |
11187 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
11188 | = record_line; | |
e142c38c DJ |
11189 | |
11190 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 11191 | |
debd256d JB |
11192 | line_ptr = lh->statement_program_start; |
11193 | line_end = lh->statement_program_end; | |
c906108c SS |
11194 | |
11195 | /* Read the statement sequences until there's nothing left. */ | |
11196 | while (line_ptr < line_end) | |
11197 | { | |
11198 | /* state machine registers */ | |
11199 | CORE_ADDR address = 0; | |
11200 | unsigned int file = 1; | |
11201 | unsigned int line = 1; | |
11202 | unsigned int column = 0; | |
debd256d | 11203 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
11204 | int basic_block = 0; |
11205 | int end_sequence = 0; | |
fbf65064 | 11206 | CORE_ADDR addr; |
2dc7f7b3 | 11207 | unsigned char op_index = 0; |
c906108c | 11208 | |
aaa75496 | 11209 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 11210 | { |
aaa75496 | 11211 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
11212 | /* lh->include_dirs and lh->file_names are 0-based, but the |
11213 | directory and file name numbers in the statement program | |
11214 | are 1-based. */ | |
11215 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 11216 | char *dir = NULL; |
a738430d | 11217 | |
debd256d JB |
11218 | if (fe->dir_index) |
11219 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
11220 | |
11221 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
11222 | } |
11223 | ||
a738430d | 11224 | /* Decode the table. */ |
c5aa993b | 11225 | while (!end_sequence) |
c906108c SS |
11226 | { |
11227 | op_code = read_1_byte (abfd, line_ptr); | |
11228 | line_ptr += 1; | |
59205f5a JB |
11229 | if (line_ptr > line_end) |
11230 | { | |
11231 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
11232 | break; | |
11233 | } | |
9aa1fe7e | 11234 | |
debd256d | 11235 | if (op_code >= lh->opcode_base) |
6e70227d | 11236 | { |
a738430d | 11237 | /* Special operand. */ |
debd256d | 11238 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
11239 | address += (((op_index + (adj_opcode / lh->line_range)) |
11240 | / lh->maximum_ops_per_instruction) | |
11241 | * lh->minimum_instruction_length); | |
11242 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
11243 | % lh->maximum_ops_per_instruction); | |
debd256d | 11244 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 11245 | if (lh->num_file_names < file || file == 0) |
25e43795 | 11246 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
11247 | /* For now we ignore lines not starting on an |
11248 | instruction boundary. */ | |
11249 | else if (op_index == 0) | |
25e43795 DJ |
11250 | { |
11251 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 11252 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
11253 | { |
11254 | if (last_subfile != current_subfile) | |
11255 | { | |
11256 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
11257 | if (last_subfile) | |
c91513d8 | 11258 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
11259 | last_subfile = current_subfile; |
11260 | } | |
25e43795 | 11261 | /* Append row to matrix using current values. */ |
7019d805 | 11262 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 11263 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 11264 | } |
25e43795 | 11265 | } |
ca5f395d | 11266 | basic_block = 0; |
9aa1fe7e GK |
11267 | } |
11268 | else switch (op_code) | |
c906108c SS |
11269 | { |
11270 | case DW_LNS_extended_op: | |
3e43a32a MS |
11271 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
11272 | &bytes_read); | |
473b7be6 | 11273 | line_ptr += bytes_read; |
a8c50c1f | 11274 | extended_end = line_ptr + extended_len; |
c906108c SS |
11275 | extended_op = read_1_byte (abfd, line_ptr); |
11276 | line_ptr += 1; | |
11277 | switch (extended_op) | |
11278 | { | |
11279 | case DW_LNE_end_sequence: | |
c91513d8 | 11280 | p_record_line = record_line; |
c906108c | 11281 | end_sequence = 1; |
c906108c SS |
11282 | break; |
11283 | case DW_LNE_set_address: | |
e7c27a73 | 11284 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
11285 | |
11286 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
11287 | { | |
11288 | /* This line table is for a function which has been | |
11289 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
11290 | ||
11291 | long line_offset | |
11292 | = line_ptr - dwarf2_per_objfile->line.buffer; | |
11293 | ||
11294 | complaint (&symfile_complaints, | |
11295 | _(".debug_line address at offset 0x%lx is 0 " | |
11296 | "[in module %s]"), | |
bb5ed363 | 11297 | line_offset, objfile->name); |
c91513d8 PP |
11298 | p_record_line = noop_record_line; |
11299 | } | |
11300 | ||
2dc7f7b3 | 11301 | op_index = 0; |
107d2387 AC |
11302 | line_ptr += bytes_read; |
11303 | address += baseaddr; | |
c906108c SS |
11304 | break; |
11305 | case DW_LNE_define_file: | |
debd256d JB |
11306 | { |
11307 | char *cur_file; | |
11308 | unsigned int dir_index, mod_time, length; | |
6e70227d | 11309 | |
3e43a32a MS |
11310 | cur_file = read_direct_string (abfd, line_ptr, |
11311 | &bytes_read); | |
debd256d JB |
11312 | line_ptr += bytes_read; |
11313 | dir_index = | |
11314 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
11315 | line_ptr += bytes_read; | |
11316 | mod_time = | |
11317 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
11318 | line_ptr += bytes_read; | |
11319 | length = | |
11320 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
11321 | line_ptr += bytes_read; | |
11322 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
11323 | } | |
c906108c | 11324 | break; |
d0c6ba3d CC |
11325 | case DW_LNE_set_discriminator: |
11326 | /* The discriminator is not interesting to the debugger; | |
11327 | just ignore it. */ | |
11328 | line_ptr = extended_end; | |
11329 | break; | |
c906108c | 11330 | default: |
4d3c2250 | 11331 | complaint (&symfile_complaints, |
e2e0b3e5 | 11332 | _("mangled .debug_line section")); |
debd256d | 11333 | return; |
c906108c | 11334 | } |
a8c50c1f DJ |
11335 | /* Make sure that we parsed the extended op correctly. If e.g. |
11336 | we expected a different address size than the producer used, | |
11337 | we may have read the wrong number of bytes. */ | |
11338 | if (line_ptr != extended_end) | |
11339 | { | |
11340 | complaint (&symfile_complaints, | |
11341 | _("mangled .debug_line section")); | |
11342 | return; | |
11343 | } | |
c906108c SS |
11344 | break; |
11345 | case DW_LNS_copy: | |
59205f5a | 11346 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
11347 | dwarf2_debug_line_missing_file_complaint (); |
11348 | else | |
366da635 | 11349 | { |
25e43795 | 11350 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 11351 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
11352 | { |
11353 | if (last_subfile != current_subfile) | |
11354 | { | |
11355 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
11356 | if (last_subfile) | |
c91513d8 | 11357 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
11358 | last_subfile = current_subfile; |
11359 | } | |
7019d805 | 11360 | addr = gdbarch_addr_bits_remove (gdbarch, address); |
c91513d8 | 11361 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 11362 | } |
366da635 | 11363 | } |
c906108c SS |
11364 | basic_block = 0; |
11365 | break; | |
11366 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
11367 | { |
11368 | CORE_ADDR adjust | |
11369 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
11370 | ||
11371 | address += (((op_index + adjust) | |
11372 | / lh->maximum_ops_per_instruction) | |
11373 | * lh->minimum_instruction_length); | |
11374 | op_index = ((op_index + adjust) | |
11375 | % lh->maximum_ops_per_instruction); | |
11376 | line_ptr += bytes_read; | |
11377 | } | |
c906108c SS |
11378 | break; |
11379 | case DW_LNS_advance_line: | |
11380 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
11381 | line_ptr += bytes_read; | |
11382 | break; | |
11383 | case DW_LNS_set_file: | |
debd256d | 11384 | { |
a738430d MK |
11385 | /* The arrays lh->include_dirs and lh->file_names are |
11386 | 0-based, but the directory and file name numbers in | |
11387 | the statement program are 1-based. */ | |
debd256d | 11388 | struct file_entry *fe; |
4f1520fb | 11389 | char *dir = NULL; |
a738430d | 11390 | |
debd256d JB |
11391 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
11392 | line_ptr += bytes_read; | |
59205f5a | 11393 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
11394 | dwarf2_debug_line_missing_file_complaint (); |
11395 | else | |
11396 | { | |
11397 | fe = &lh->file_names[file - 1]; | |
11398 | if (fe->dir_index) | |
11399 | dir = lh->include_dirs[fe->dir_index - 1]; | |
11400 | if (!decode_for_pst_p) | |
11401 | { | |
11402 | last_subfile = current_subfile; | |
11403 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
11404 | } | |
11405 | } | |
debd256d | 11406 | } |
c906108c SS |
11407 | break; |
11408 | case DW_LNS_set_column: | |
11409 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
11410 | line_ptr += bytes_read; | |
11411 | break; | |
11412 | case DW_LNS_negate_stmt: | |
11413 | is_stmt = (!is_stmt); | |
11414 | break; | |
11415 | case DW_LNS_set_basic_block: | |
11416 | basic_block = 1; | |
11417 | break; | |
c2c6d25f JM |
11418 | /* Add to the address register of the state machine the |
11419 | address increment value corresponding to special opcode | |
a738430d MK |
11420 | 255. I.e., this value is scaled by the minimum |
11421 | instruction length since special opcode 255 would have | |
b021a221 | 11422 | scaled the increment. */ |
c906108c | 11423 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
11424 | { |
11425 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
11426 | ||
11427 | address += (((op_index + adjust) | |
11428 | / lh->maximum_ops_per_instruction) | |
11429 | * lh->minimum_instruction_length); | |
11430 | op_index = ((op_index + adjust) | |
11431 | % lh->maximum_ops_per_instruction); | |
11432 | } | |
c906108c SS |
11433 | break; |
11434 | case DW_LNS_fixed_advance_pc: | |
11435 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 11436 | op_index = 0; |
c906108c SS |
11437 | line_ptr += 2; |
11438 | break; | |
9aa1fe7e | 11439 | default: |
a738430d MK |
11440 | { |
11441 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 11442 | int i; |
a738430d | 11443 | |
debd256d | 11444 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
11445 | { |
11446 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
11447 | line_ptr += bytes_read; | |
11448 | } | |
11449 | } | |
c906108c SS |
11450 | } |
11451 | } | |
59205f5a JB |
11452 | if (lh->num_file_names < file || file == 0) |
11453 | dwarf2_debug_line_missing_file_complaint (); | |
11454 | else | |
11455 | { | |
11456 | lh->file_names[file - 1].included_p = 1; | |
11457 | if (!decode_for_pst_p) | |
fbf65064 UW |
11458 | { |
11459 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 11460 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 11461 | } |
59205f5a | 11462 | } |
c906108c | 11463 | } |
aaa75496 JB |
11464 | |
11465 | if (decode_for_pst_p) | |
11466 | { | |
11467 | int file_index; | |
11468 | ||
11469 | /* Now that we're done scanning the Line Header Program, we can | |
11470 | create the psymtab of each included file. */ | |
11471 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
11472 | if (lh->file_names[file_index].included_p == 1) | |
11473 | { | |
c6da4cef DE |
11474 | char *include_name = |
11475 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
11476 | if (include_name != NULL) | |
aaa75496 JB |
11477 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
11478 | } | |
11479 | } | |
cb1df416 DJ |
11480 | else |
11481 | { | |
11482 | /* Make sure a symtab is created for every file, even files | |
11483 | which contain only variables (i.e. no code with associated | |
11484 | line numbers). */ | |
11485 | ||
11486 | int i; | |
11487 | struct file_entry *fe; | |
11488 | ||
11489 | for (i = 0; i < lh->num_file_names; i++) | |
11490 | { | |
11491 | char *dir = NULL; | |
9a619af0 | 11492 | |
cb1df416 DJ |
11493 | fe = &lh->file_names[i]; |
11494 | if (fe->dir_index) | |
11495 | dir = lh->include_dirs[fe->dir_index - 1]; | |
11496 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
11497 | ||
11498 | /* Skip the main file; we don't need it, and it must be | |
11499 | allocated last, so that it will show up before the | |
11500 | non-primary symtabs in the objfile's symtab list. */ | |
11501 | if (current_subfile == first_subfile) | |
11502 | continue; | |
11503 | ||
11504 | if (current_subfile->symtab == NULL) | |
11505 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
bb5ed363 | 11506 | objfile); |
cb1df416 DJ |
11507 | fe->symtab = current_subfile->symtab; |
11508 | } | |
11509 | } | |
c906108c SS |
11510 | } |
11511 | ||
11512 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
11513 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
11514 | or NULL if not known. COMP_DIR is the compilation directory for the |
11515 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
11516 | This routine tries to keep line numbers from identical absolute and |
11517 | relative file names in a common subfile. | |
11518 | ||
11519 | Using the `list' example from the GDB testsuite, which resides in | |
11520 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
11521 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
11522 | ||
c5aa993b JM |
11523 | DW_AT_name: /srcdir/list0.c |
11524 | DW_AT_comp_dir: /compdir | |
357e46e7 | 11525 | files.files[0].name: list0.h |
c5aa993b | 11526 | files.files[0].dir: /srcdir |
357e46e7 | 11527 | files.files[1].name: list0.c |
c5aa993b | 11528 | files.files[1].dir: /srcdir |
c906108c SS |
11529 | |
11530 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
11531 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
11532 | start_subfile will ensure that this happens provided that we pass the | |
11533 | concatenation of files.files[1].dir and files.files[1].name as the | |
11534 | subfile's name. */ | |
c906108c SS |
11535 | |
11536 | static void | |
3e43a32a MS |
11537 | dwarf2_start_subfile (char *filename, const char *dirname, |
11538 | const char *comp_dir) | |
c906108c | 11539 | { |
4f1520fb FR |
11540 | char *fullname; |
11541 | ||
11542 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
11543 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
11544 | second argument to start_subfile. To be consistent, we do the | |
11545 | same here. In order not to lose the line information directory, | |
11546 | we concatenate it to the filename when it makes sense. | |
11547 | Note that the Dwarf3 standard says (speaking of filenames in line | |
11548 | information): ``The directory index is ignored for file names | |
11549 | that represent full path names''. Thus ignoring dirname in the | |
11550 | `else' branch below isn't an issue. */ | |
c906108c | 11551 | |
d5166ae1 | 11552 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
11553 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
11554 | else | |
11555 | fullname = filename; | |
c906108c | 11556 | |
4f1520fb FR |
11557 | start_subfile (fullname, comp_dir); |
11558 | ||
11559 | if (fullname != filename) | |
11560 | xfree (fullname); | |
c906108c SS |
11561 | } |
11562 | ||
4c2df51b DJ |
11563 | static void |
11564 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 11565 | struct dwarf2_cu *cu) |
4c2df51b | 11566 | { |
e7c27a73 DJ |
11567 | struct objfile *objfile = cu->objfile; |
11568 | struct comp_unit_head *cu_header = &cu->header; | |
11569 | ||
4c2df51b DJ |
11570 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
11571 | code here to turn a symbol with DW_AT_external and a | |
11572 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
11573 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
11574 | with some versions of binutils) where shared libraries could have | |
11575 | relocations against symbols in their debug information - the | |
11576 | minimal symbol would have the right address, but the debug info | |
11577 | would not. It's no longer necessary, because we will explicitly | |
11578 | apply relocations when we read in the debug information now. */ | |
11579 | ||
11580 | /* A DW_AT_location attribute with no contents indicates that a | |
11581 | variable has been optimized away. */ | |
11582 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
11583 | { | |
11584 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
11585 | return; | |
11586 | } | |
11587 | ||
11588 | /* Handle one degenerate form of location expression specially, to | |
11589 | preserve GDB's previous behavior when section offsets are | |
11590 | specified. If this is just a DW_OP_addr then mark this symbol | |
11591 | as LOC_STATIC. */ | |
11592 | ||
11593 | if (attr_form_is_block (attr) | |
11594 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
11595 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
11596 | { | |
891d2f0b | 11597 | unsigned int dummy; |
4c2df51b DJ |
11598 | |
11599 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 11600 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 11601 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
11602 | fixup_symbol_section (sym, objfile); |
11603 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
11604 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
11605 | return; |
11606 | } | |
11607 | ||
11608 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
11609 | expression evaluator, and use LOC_COMPUTED only when necessary | |
11610 | (i.e. when the value of a register or memory location is | |
11611 | referenced, or a thread-local block, etc.). Then again, it might | |
11612 | not be worthwhile. I'm assuming that it isn't unless performance | |
11613 | or memory numbers show me otherwise. */ | |
11614 | ||
e7c27a73 | 11615 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b | 11616 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
8be455d7 JK |
11617 | |
11618 | if (SYMBOL_COMPUTED_OPS (sym) == &dwarf2_loclist_funcs) | |
11619 | cu->has_loclist = 1; | |
4c2df51b DJ |
11620 | } |
11621 | ||
c906108c SS |
11622 | /* Given a pointer to a DWARF information entry, figure out if we need |
11623 | to make a symbol table entry for it, and if so, create a new entry | |
11624 | and return a pointer to it. | |
11625 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
11626 | used the passed type. |
11627 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
11628 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
11629 | |
11630 | static struct symbol * | |
34eaf542 TT |
11631 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
11632 | struct symbol *space) | |
c906108c | 11633 | { |
e7c27a73 | 11634 | struct objfile *objfile = cu->objfile; |
c906108c SS |
11635 | struct symbol *sym = NULL; |
11636 | char *name; | |
11637 | struct attribute *attr = NULL; | |
11638 | struct attribute *attr2 = NULL; | |
e142c38c | 11639 | CORE_ADDR baseaddr; |
e37fd15a SW |
11640 | struct pending **list_to_add = NULL; |
11641 | ||
edb3359d | 11642 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
11643 | |
11644 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 11645 | |
94af9270 | 11646 | name = dwarf2_name (die, cu); |
c906108c SS |
11647 | if (name) |
11648 | { | |
94af9270 | 11649 | const char *linkagename; |
34eaf542 | 11650 | int suppress_add = 0; |
94af9270 | 11651 | |
34eaf542 TT |
11652 | if (space) |
11653 | sym = space; | |
11654 | else | |
11655 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 11656 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
11657 | |
11658 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 11659 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
11660 | linkagename = dwarf2_physname (name, die, cu); |
11661 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 11662 | |
f55ee35c JK |
11663 | /* Fortran does not have mangling standard and the mangling does differ |
11664 | between gfortran, iFort etc. */ | |
11665 | if (cu->language == language_fortran | |
b250c185 | 11666 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
11667 | symbol_set_demangled_name (&(sym->ginfo), |
11668 | (char *) dwarf2_full_name (name, die, cu), | |
11669 | NULL); | |
f55ee35c | 11670 | |
c906108c | 11671 | /* Default assumptions. |
c5aa993b | 11672 | Use the passed type or decode it from the die. */ |
176620f1 | 11673 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 11674 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
11675 | if (type != NULL) |
11676 | SYMBOL_TYPE (sym) = type; | |
11677 | else | |
e7c27a73 | 11678 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
11679 | attr = dwarf2_attr (die, |
11680 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
11681 | cu); | |
c906108c SS |
11682 | if (attr) |
11683 | { | |
11684 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
11685 | } | |
cb1df416 | 11686 | |
edb3359d DJ |
11687 | attr = dwarf2_attr (die, |
11688 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
11689 | cu); | |
cb1df416 DJ |
11690 | if (attr) |
11691 | { | |
11692 | int file_index = DW_UNSND (attr); | |
9a619af0 | 11693 | |
cb1df416 DJ |
11694 | if (cu->line_header == NULL |
11695 | || file_index > cu->line_header->num_file_names) | |
11696 | complaint (&symfile_complaints, | |
11697 | _("file index out of range")); | |
1c3d648d | 11698 | else if (file_index > 0) |
cb1df416 DJ |
11699 | { |
11700 | struct file_entry *fe; | |
9a619af0 | 11701 | |
cb1df416 DJ |
11702 | fe = &cu->line_header->file_names[file_index - 1]; |
11703 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
11704 | } | |
11705 | } | |
11706 | ||
c906108c SS |
11707 | switch (die->tag) |
11708 | { | |
11709 | case DW_TAG_label: | |
e142c38c | 11710 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
11711 | if (attr) |
11712 | { | |
11713 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
11714 | } | |
0f5238ed TT |
11715 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
11716 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 11717 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 11718 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
11719 | break; |
11720 | case DW_TAG_subprogram: | |
11721 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
11722 | finish_block. */ | |
11723 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 11724 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
11725 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
11726 | || cu->language == language_ada) | |
c906108c | 11727 | { |
2cfa0c8d JB |
11728 | /* Subprograms marked external are stored as a global symbol. |
11729 | Ada subprograms, whether marked external or not, are always | |
11730 | stored as a global symbol, because we want to be able to | |
11731 | access them globally. For instance, we want to be able | |
11732 | to break on a nested subprogram without having to | |
11733 | specify the context. */ | |
e37fd15a | 11734 | list_to_add = &global_symbols; |
c906108c SS |
11735 | } |
11736 | else | |
11737 | { | |
e37fd15a | 11738 | list_to_add = cu->list_in_scope; |
c906108c SS |
11739 | } |
11740 | break; | |
edb3359d DJ |
11741 | case DW_TAG_inlined_subroutine: |
11742 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
11743 | finish_block. */ | |
11744 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
11745 | SYMBOL_INLINED (sym) = 1; | |
11746 | /* Do not add the symbol to any lists. It will be found via | |
11747 | BLOCK_FUNCTION from the blockvector. */ | |
11748 | break; | |
34eaf542 TT |
11749 | case DW_TAG_template_value_param: |
11750 | suppress_add = 1; | |
11751 | /* Fall through. */ | |
72929c62 | 11752 | case DW_TAG_constant: |
c906108c | 11753 | case DW_TAG_variable: |
254e6b9e | 11754 | case DW_TAG_member: |
0963b4bd MS |
11755 | /* Compilation with minimal debug info may result in |
11756 | variables with missing type entries. Change the | |
11757 | misleading `void' type to something sensible. */ | |
c906108c | 11758 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 11759 | SYMBOL_TYPE (sym) |
46bf5051 | 11760 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 11761 | |
e142c38c | 11762 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
11763 | /* In the case of DW_TAG_member, we should only be called for |
11764 | static const members. */ | |
11765 | if (die->tag == DW_TAG_member) | |
11766 | { | |
3863f96c DE |
11767 | /* dwarf2_add_field uses die_is_declaration, |
11768 | so we do the same. */ | |
254e6b9e DE |
11769 | gdb_assert (die_is_declaration (die, cu)); |
11770 | gdb_assert (attr); | |
11771 | } | |
c906108c SS |
11772 | if (attr) |
11773 | { | |
e7c27a73 | 11774 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 11775 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 11776 | if (!suppress_add) |
34eaf542 TT |
11777 | { |
11778 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 11779 | list_to_add = &global_symbols; |
34eaf542 | 11780 | else |
e37fd15a | 11781 | list_to_add = cu->list_in_scope; |
34eaf542 | 11782 | } |
c906108c SS |
11783 | break; |
11784 | } | |
e142c38c | 11785 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
11786 | if (attr) |
11787 | { | |
e7c27a73 | 11788 | var_decode_location (attr, sym, cu); |
e142c38c | 11789 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
11790 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
11791 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
11792 | && !dwarf2_per_objfile->has_section_at_zero) | |
11793 | { | |
11794 | /* When a static variable is eliminated by the linker, | |
11795 | the corresponding debug information is not stripped | |
11796 | out, but the variable address is set to null; | |
11797 | do not add such variables into symbol table. */ | |
11798 | } | |
11799 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 11800 | { |
f55ee35c JK |
11801 | /* Workaround gfortran PR debug/40040 - it uses |
11802 | DW_AT_location for variables in -fPIC libraries which may | |
11803 | get overriden by other libraries/executable and get | |
11804 | a different address. Resolve it by the minimal symbol | |
11805 | which may come from inferior's executable using copy | |
11806 | relocation. Make this workaround only for gfortran as for | |
11807 | other compilers GDB cannot guess the minimal symbol | |
11808 | Fortran mangling kind. */ | |
11809 | if (cu->language == language_fortran && die->parent | |
11810 | && die->parent->tag == DW_TAG_module | |
11811 | && cu->producer | |
11812 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
11813 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
11814 | ||
1c809c68 TT |
11815 | /* A variable with DW_AT_external is never static, |
11816 | but it may be block-scoped. */ | |
11817 | list_to_add = (cu->list_in_scope == &file_symbols | |
11818 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 11819 | } |
c906108c | 11820 | else |
e37fd15a | 11821 | list_to_add = cu->list_in_scope; |
c906108c SS |
11822 | } |
11823 | else | |
11824 | { | |
11825 | /* We do not know the address of this symbol. | |
c5aa993b JM |
11826 | If it is an external symbol and we have type information |
11827 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
11828 | The address of the variable will then be determined from | |
11829 | the minimal symbol table whenever the variable is | |
11830 | referenced. */ | |
e142c38c | 11831 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 11832 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 11833 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 11834 | { |
0fe7935b DJ |
11835 | /* A variable with DW_AT_external is never static, but it |
11836 | may be block-scoped. */ | |
11837 | list_to_add = (cu->list_in_scope == &file_symbols | |
11838 | ? &global_symbols : cu->list_in_scope); | |
11839 | ||
c906108c | 11840 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 11841 | } |
442ddf59 JK |
11842 | else if (!die_is_declaration (die, cu)) |
11843 | { | |
11844 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
11845 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
11846 | if (!suppress_add) |
11847 | list_to_add = cu->list_in_scope; | |
442ddf59 | 11848 | } |
c906108c SS |
11849 | } |
11850 | break; | |
11851 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
11852 | /* If we are inside a function, mark this as an argument. If |
11853 | not, we might be looking at an argument to an inlined function | |
11854 | when we do not have enough information to show inlined frames; | |
11855 | pretend it's a local variable in that case so that the user can | |
11856 | still see it. */ | |
11857 | if (context_stack_depth > 0 | |
11858 | && context_stack[context_stack_depth - 1].name != NULL) | |
11859 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 11860 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
11861 | if (attr) |
11862 | { | |
e7c27a73 | 11863 | var_decode_location (attr, sym, cu); |
c906108c | 11864 | } |
e142c38c | 11865 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
11866 | if (attr) |
11867 | { | |
e7c27a73 | 11868 | dwarf2_const_value (attr, sym, cu); |
c906108c | 11869 | } |
f346a30d | 11870 | |
e37fd15a | 11871 | list_to_add = cu->list_in_scope; |
c906108c SS |
11872 | break; |
11873 | case DW_TAG_unspecified_parameters: | |
11874 | /* From varargs functions; gdb doesn't seem to have any | |
11875 | interest in this information, so just ignore it for now. | |
11876 | (FIXME?) */ | |
11877 | break; | |
34eaf542 TT |
11878 | case DW_TAG_template_type_param: |
11879 | suppress_add = 1; | |
11880 | /* Fall through. */ | |
c906108c | 11881 | case DW_TAG_class_type: |
680b30c7 | 11882 | case DW_TAG_interface_type: |
c906108c SS |
11883 | case DW_TAG_structure_type: |
11884 | case DW_TAG_union_type: | |
72019c9c | 11885 | case DW_TAG_set_type: |
c906108c SS |
11886 | case DW_TAG_enumeration_type: |
11887 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 11888 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 11889 | |
63d06c5c | 11890 | { |
987504bb | 11891 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
11892 | really ever be static objects: otherwise, if you try |
11893 | to, say, break of a class's method and you're in a file | |
11894 | which doesn't mention that class, it won't work unless | |
11895 | the check for all static symbols in lookup_symbol_aux | |
11896 | saves you. See the OtherFileClass tests in | |
11897 | gdb.c++/namespace.exp. */ | |
11898 | ||
e37fd15a | 11899 | if (!suppress_add) |
34eaf542 | 11900 | { |
34eaf542 TT |
11901 | list_to_add = (cu->list_in_scope == &file_symbols |
11902 | && (cu->language == language_cplus | |
11903 | || cu->language == language_java) | |
11904 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 11905 | |
64382290 TT |
11906 | /* The semantics of C++ state that "struct foo { |
11907 | ... }" also defines a typedef for "foo". A Java | |
11908 | class declaration also defines a typedef for the | |
11909 | class. */ | |
11910 | if (cu->language == language_cplus | |
11911 | || cu->language == language_java | |
11912 | || cu->language == language_ada) | |
11913 | { | |
11914 | /* The symbol's name is already allocated along | |
11915 | with this objfile, so we don't need to | |
11916 | duplicate it for the type. */ | |
11917 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
11918 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
11919 | } | |
63d06c5c DC |
11920 | } |
11921 | } | |
c906108c SS |
11922 | break; |
11923 | case DW_TAG_typedef: | |
63d06c5c DC |
11924 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
11925 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 11926 | list_to_add = cu->list_in_scope; |
63d06c5c | 11927 | break; |
c906108c | 11928 | case DW_TAG_base_type: |
a02abb62 | 11929 | case DW_TAG_subrange_type: |
c906108c | 11930 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 11931 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 11932 | list_to_add = cu->list_in_scope; |
c906108c SS |
11933 | break; |
11934 | case DW_TAG_enumerator: | |
e142c38c | 11935 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
11936 | if (attr) |
11937 | { | |
e7c27a73 | 11938 | dwarf2_const_value (attr, sym, cu); |
c906108c | 11939 | } |
63d06c5c DC |
11940 | { |
11941 | /* NOTE: carlton/2003-11-10: See comment above in the | |
11942 | DW_TAG_class_type, etc. block. */ | |
11943 | ||
e142c38c | 11944 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
11945 | && (cu->language == language_cplus |
11946 | || cu->language == language_java) | |
e142c38c | 11947 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 11948 | } |
c906108c | 11949 | break; |
5c4e30ca DC |
11950 | case DW_TAG_namespace: |
11951 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 11952 | list_to_add = &global_symbols; |
5c4e30ca | 11953 | break; |
c906108c SS |
11954 | default: |
11955 | /* Not a tag we recognize. Hopefully we aren't processing | |
11956 | trash data, but since we must specifically ignore things | |
11957 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 11958 | this point. */ |
e2e0b3e5 | 11959 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 11960 | dwarf_tag_name (die->tag)); |
c906108c SS |
11961 | break; |
11962 | } | |
df8a16a1 | 11963 | |
e37fd15a SW |
11964 | if (suppress_add) |
11965 | { | |
11966 | sym->hash_next = objfile->template_symbols; | |
11967 | objfile->template_symbols = sym; | |
11968 | list_to_add = NULL; | |
11969 | } | |
11970 | ||
11971 | if (list_to_add != NULL) | |
11972 | add_symbol_to_list (sym, list_to_add); | |
11973 | ||
df8a16a1 DJ |
11974 | /* For the benefit of old versions of GCC, check for anonymous |
11975 | namespaces based on the demangled name. */ | |
11976 | if (!processing_has_namespace_info | |
94af9270 | 11977 | && cu->language == language_cplus) |
a10964d1 | 11978 | cp_scan_for_anonymous_namespaces (sym, objfile); |
c906108c SS |
11979 | } |
11980 | return (sym); | |
11981 | } | |
11982 | ||
34eaf542 TT |
11983 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
11984 | ||
11985 | static struct symbol * | |
11986 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
11987 | { | |
11988 | return new_symbol_full (die, type, cu, NULL); | |
11989 | } | |
11990 | ||
98bfdba5 PA |
11991 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
11992 | zero-extend it as appropriate for the symbol's type. The DWARF | |
11993 | standard (v4) is not entirely clear about the meaning of using | |
11994 | DW_FORM_dataN for a constant with a signed type, where the type is | |
11995 | wider than the data. The conclusion of a discussion on the DWARF | |
11996 | list was that this is unspecified. We choose to always zero-extend | |
11997 | because that is the interpretation long in use by GCC. */ | |
c906108c | 11998 | |
98bfdba5 PA |
11999 | static gdb_byte * |
12000 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
12001 | const char *name, struct obstack *obstack, | |
12002 | struct dwarf2_cu *cu, long *value, int bits) | |
c906108c | 12003 | { |
e7c27a73 | 12004 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
12005 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
12006 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
12007 | LONGEST l = DW_UNSND (attr); |
12008 | ||
12009 | if (bits < sizeof (*value) * 8) | |
12010 | { | |
12011 | l &= ((LONGEST) 1 << bits) - 1; | |
12012 | *value = l; | |
12013 | } | |
12014 | else if (bits == sizeof (*value) * 8) | |
12015 | *value = l; | |
12016 | else | |
12017 | { | |
12018 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
12019 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
12020 | return bytes; | |
12021 | } | |
12022 | ||
12023 | return NULL; | |
12024 | } | |
12025 | ||
12026 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
12027 | the value does not fit in *VALUE, set *BYTES - either already | |
12028 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
12029 | or, set *BATON, if we translated the constant to a location | |
12030 | expression. */ | |
12031 | ||
12032 | static void | |
12033 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
12034 | const char *name, struct obstack *obstack, | |
12035 | struct dwarf2_cu *cu, | |
12036 | long *value, gdb_byte **bytes, | |
12037 | struct dwarf2_locexpr_baton **baton) | |
12038 | { | |
12039 | struct objfile *objfile = cu->objfile; | |
12040 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 12041 | struct dwarf_block *blk; |
98bfdba5 PA |
12042 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
12043 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
12044 | ||
12045 | *value = 0; | |
12046 | *bytes = NULL; | |
12047 | *baton = NULL; | |
c906108c SS |
12048 | |
12049 | switch (attr->form) | |
12050 | { | |
12051 | case DW_FORM_addr: | |
ac56253d | 12052 | { |
ac56253d TT |
12053 | gdb_byte *data; |
12054 | ||
98bfdba5 PA |
12055 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
12056 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 12057 | cu_header->addr_size, |
98bfdba5 | 12058 | TYPE_LENGTH (type)); |
ac56253d TT |
12059 | /* Symbols of this form are reasonably rare, so we just |
12060 | piggyback on the existing location code rather than writing | |
12061 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
12062 | *baton = obstack_alloc (&objfile->objfile_obstack, |
12063 | sizeof (struct dwarf2_locexpr_baton)); | |
12064 | (*baton)->per_cu = cu->per_cu; | |
12065 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 12066 | |
98bfdba5 PA |
12067 | (*baton)->size = 2 + cu_header->addr_size; |
12068 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
12069 | (*baton)->data = data; | |
ac56253d TT |
12070 | |
12071 | data[0] = DW_OP_addr; | |
12072 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
12073 | byte_order, DW_ADDR (attr)); | |
12074 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 12075 | } |
c906108c | 12076 | break; |
4ac36638 | 12077 | case DW_FORM_string: |
93b5768b | 12078 | case DW_FORM_strp: |
98bfdba5 PA |
12079 | /* DW_STRING is already allocated on the objfile obstack, point |
12080 | directly to it. */ | |
12081 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 12082 | break; |
c906108c SS |
12083 | case DW_FORM_block1: |
12084 | case DW_FORM_block2: | |
12085 | case DW_FORM_block4: | |
12086 | case DW_FORM_block: | |
2dc7f7b3 | 12087 | case DW_FORM_exprloc: |
c906108c | 12088 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
12089 | if (TYPE_LENGTH (type) != blk->size) |
12090 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
12091 | TYPE_LENGTH (type)); | |
12092 | *bytes = blk->data; | |
c906108c | 12093 | break; |
2df3850c JM |
12094 | |
12095 | /* The DW_AT_const_value attributes are supposed to carry the | |
12096 | symbol's value "represented as it would be on the target | |
12097 | architecture." By the time we get here, it's already been | |
12098 | converted to host endianness, so we just need to sign- or | |
12099 | zero-extend it as appropriate. */ | |
12100 | case DW_FORM_data1: | |
3e43a32a MS |
12101 | *bytes = dwarf2_const_value_data (attr, type, name, |
12102 | obstack, cu, value, 8); | |
2df3850c | 12103 | break; |
c906108c | 12104 | case DW_FORM_data2: |
3e43a32a MS |
12105 | *bytes = dwarf2_const_value_data (attr, type, name, |
12106 | obstack, cu, value, 16); | |
2df3850c | 12107 | break; |
c906108c | 12108 | case DW_FORM_data4: |
3e43a32a MS |
12109 | *bytes = dwarf2_const_value_data (attr, type, name, |
12110 | obstack, cu, value, 32); | |
2df3850c | 12111 | break; |
c906108c | 12112 | case DW_FORM_data8: |
3e43a32a MS |
12113 | *bytes = dwarf2_const_value_data (attr, type, name, |
12114 | obstack, cu, value, 64); | |
2df3850c JM |
12115 | break; |
12116 | ||
c906108c | 12117 | case DW_FORM_sdata: |
98bfdba5 | 12118 | *value = DW_SND (attr); |
2df3850c JM |
12119 | break; |
12120 | ||
c906108c | 12121 | case DW_FORM_udata: |
98bfdba5 | 12122 | *value = DW_UNSND (attr); |
c906108c | 12123 | break; |
2df3850c | 12124 | |
c906108c | 12125 | default: |
4d3c2250 | 12126 | complaint (&symfile_complaints, |
e2e0b3e5 | 12127 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 12128 | dwarf_form_name (attr->form)); |
98bfdba5 | 12129 | *value = 0; |
c906108c SS |
12130 | break; |
12131 | } | |
12132 | } | |
12133 | ||
2df3850c | 12134 | |
98bfdba5 PA |
12135 | /* Copy constant value from an attribute to a symbol. */ |
12136 | ||
2df3850c | 12137 | static void |
98bfdba5 PA |
12138 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
12139 | struct dwarf2_cu *cu) | |
2df3850c | 12140 | { |
98bfdba5 PA |
12141 | struct objfile *objfile = cu->objfile; |
12142 | struct comp_unit_head *cu_header = &cu->header; | |
12143 | long value; | |
12144 | gdb_byte *bytes; | |
12145 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 12146 | |
98bfdba5 PA |
12147 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
12148 | SYMBOL_PRINT_NAME (sym), | |
12149 | &objfile->objfile_obstack, cu, | |
12150 | &value, &bytes, &baton); | |
2df3850c | 12151 | |
98bfdba5 PA |
12152 | if (baton != NULL) |
12153 | { | |
12154 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
12155 | SYMBOL_LOCATION_BATON (sym) = baton; | |
12156 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
12157 | } | |
12158 | else if (bytes != NULL) | |
12159 | { | |
12160 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
12161 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
12162 | } | |
12163 | else | |
12164 | { | |
12165 | SYMBOL_VALUE (sym) = value; | |
12166 | SYMBOL_CLASS (sym) = LOC_CONST; | |
12167 | } | |
2df3850c JM |
12168 | } |
12169 | ||
c906108c SS |
12170 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
12171 | ||
12172 | static struct type * | |
e7c27a73 | 12173 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12174 | { |
c906108c | 12175 | struct attribute *type_attr; |
c906108c | 12176 | |
e142c38c | 12177 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
12178 | if (!type_attr) |
12179 | { | |
12180 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 12181 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 12182 | } |
348e048f | 12183 | |
673bfd45 | 12184 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
12185 | } |
12186 | ||
b4ba55a1 JB |
12187 | /* True iff CU's producer generates GNAT Ada auxiliary information |
12188 | that allows to find parallel types through that information instead | |
12189 | of having to do expensive parallel lookups by type name. */ | |
12190 | ||
12191 | static int | |
12192 | need_gnat_info (struct dwarf2_cu *cu) | |
12193 | { | |
12194 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
12195 | of GNAT produces this auxiliary information, without any indication | |
12196 | that it is produced. Part of enhancing the FSF version of GNAT | |
12197 | to produce that information will be to put in place an indicator | |
12198 | that we can use in order to determine whether the descriptive type | |
12199 | info is available or not. One suggestion that has been made is | |
12200 | to use a new attribute, attached to the CU die. For now, assume | |
12201 | that the descriptive type info is not available. */ | |
12202 | return 0; | |
12203 | } | |
12204 | ||
b4ba55a1 JB |
12205 | /* Return the auxiliary type of the die in question using its |
12206 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
12207 | attribute is not present. */ | |
12208 | ||
12209 | static struct type * | |
12210 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
12211 | { | |
b4ba55a1 | 12212 | struct attribute *type_attr; |
b4ba55a1 JB |
12213 | |
12214 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
12215 | if (!type_attr) | |
12216 | return NULL; | |
12217 | ||
673bfd45 | 12218 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
12219 | } |
12220 | ||
12221 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
12222 | descriptive type accordingly. */ | |
12223 | ||
12224 | static void | |
12225 | set_descriptive_type (struct type *type, struct die_info *die, | |
12226 | struct dwarf2_cu *cu) | |
12227 | { | |
12228 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
12229 | ||
12230 | if (descriptive_type) | |
12231 | { | |
12232 | ALLOCATE_GNAT_AUX_TYPE (type); | |
12233 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
12234 | } | |
12235 | } | |
12236 | ||
c906108c SS |
12237 | /* Return the containing type of the die in question using its |
12238 | DW_AT_containing_type attribute. */ | |
12239 | ||
12240 | static struct type * | |
e7c27a73 | 12241 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12242 | { |
c906108c | 12243 | struct attribute *type_attr; |
c906108c | 12244 | |
e142c38c | 12245 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
12246 | if (!type_attr) |
12247 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
12248 | "[in module %s]"), cu->objfile->name); | |
12249 | ||
673bfd45 | 12250 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
12251 | } |
12252 | ||
673bfd45 DE |
12253 | /* Look up the type of DIE in CU using its type attribute ATTR. |
12254 | If there is no type substitute an error marker. */ | |
12255 | ||
c906108c | 12256 | static struct type * |
673bfd45 DE |
12257 | lookup_die_type (struct die_info *die, struct attribute *attr, |
12258 | struct dwarf2_cu *cu) | |
c906108c | 12259 | { |
bb5ed363 | 12260 | struct objfile *objfile = cu->objfile; |
f792889a DJ |
12261 | struct type *this_type; |
12262 | ||
673bfd45 DE |
12263 | /* First see if we have it cached. */ |
12264 | ||
12265 | if (is_ref_attr (attr)) | |
12266 | { | |
12267 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
12268 | ||
12269 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
12270 | } | |
55f1336d | 12271 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
12272 | { |
12273 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
12274 | struct dwarf2_cu *sig_cu; | |
12275 | unsigned int offset; | |
12276 | ||
12277 | /* sig_type will be NULL if the signatured type is missing from | |
12278 | the debug info. */ | |
12279 | if (sig_type == NULL) | |
12280 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
12281 | "at 0x%x [in module %s]"), | |
bb5ed363 | 12282 | die->offset, objfile->name); |
673bfd45 | 12283 | |
b0df02fd | 12284 | gdb_assert (sig_type->per_cu.debug_types_section); |
b3c8eb43 | 12285 | offset = sig_type->per_cu.offset + sig_type->type_offset; |
673bfd45 DE |
12286 | this_type = get_die_type_at_offset (offset, &sig_type->per_cu); |
12287 | } | |
12288 | else | |
12289 | { | |
12290 | dump_die_for_error (die); | |
12291 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
bb5ed363 | 12292 | dwarf_attr_name (attr->name), objfile->name); |
673bfd45 DE |
12293 | } |
12294 | ||
12295 | /* If not cached we need to read it in. */ | |
12296 | ||
12297 | if (this_type == NULL) | |
12298 | { | |
12299 | struct die_info *type_die; | |
12300 | struct dwarf2_cu *type_cu = cu; | |
12301 | ||
12302 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
12303 | /* If the type is cached, we should have found it above. */ | |
12304 | gdb_assert (get_die_type (type_die, type_cu) == NULL); | |
12305 | this_type = read_type_die_1 (type_die, type_cu); | |
12306 | } | |
12307 | ||
12308 | /* If we still don't have a type use an error marker. */ | |
12309 | ||
12310 | if (this_type == NULL) | |
c906108c | 12311 | { |
b00fdb78 TT |
12312 | char *message, *saved; |
12313 | ||
12314 | /* read_type_die already issued a complaint. */ | |
12315 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
bb5ed363 | 12316 | objfile->name, |
b00fdb78 TT |
12317 | cu->header.offset, |
12318 | die->offset); | |
bb5ed363 | 12319 | saved = obstack_copy0 (&objfile->objfile_obstack, |
b00fdb78 TT |
12320 | message, strlen (message)); |
12321 | xfree (message); | |
12322 | ||
bb5ed363 | 12323 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, objfile); |
c906108c | 12324 | } |
673bfd45 | 12325 | |
f792889a | 12326 | return this_type; |
c906108c SS |
12327 | } |
12328 | ||
673bfd45 DE |
12329 | /* Return the type in DIE, CU. |
12330 | Returns NULL for invalid types. | |
12331 | ||
12332 | This first does a lookup in the appropriate type_hash table, | |
12333 | and only reads the die in if necessary. | |
12334 | ||
12335 | NOTE: This can be called when reading in partial or full symbols. */ | |
12336 | ||
f792889a | 12337 | static struct type * |
e7c27a73 | 12338 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12339 | { |
f792889a DJ |
12340 | struct type *this_type; |
12341 | ||
12342 | this_type = get_die_type (die, cu); | |
12343 | if (this_type) | |
12344 | return this_type; | |
12345 | ||
673bfd45 DE |
12346 | return read_type_die_1 (die, cu); |
12347 | } | |
12348 | ||
12349 | /* Read the type in DIE, CU. | |
12350 | Returns NULL for invalid types. */ | |
12351 | ||
12352 | static struct type * | |
12353 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
12354 | { | |
12355 | struct type *this_type = NULL; | |
12356 | ||
c906108c SS |
12357 | switch (die->tag) |
12358 | { | |
12359 | case DW_TAG_class_type: | |
680b30c7 | 12360 | case DW_TAG_interface_type: |
c906108c SS |
12361 | case DW_TAG_structure_type: |
12362 | case DW_TAG_union_type: | |
f792889a | 12363 | this_type = read_structure_type (die, cu); |
c906108c SS |
12364 | break; |
12365 | case DW_TAG_enumeration_type: | |
f792889a | 12366 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
12367 | break; |
12368 | case DW_TAG_subprogram: | |
12369 | case DW_TAG_subroutine_type: | |
edb3359d | 12370 | case DW_TAG_inlined_subroutine: |
f792889a | 12371 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
12372 | break; |
12373 | case DW_TAG_array_type: | |
f792889a | 12374 | this_type = read_array_type (die, cu); |
c906108c | 12375 | break; |
72019c9c | 12376 | case DW_TAG_set_type: |
f792889a | 12377 | this_type = read_set_type (die, cu); |
72019c9c | 12378 | break; |
c906108c | 12379 | case DW_TAG_pointer_type: |
f792889a | 12380 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
12381 | break; |
12382 | case DW_TAG_ptr_to_member_type: | |
f792889a | 12383 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
12384 | break; |
12385 | case DW_TAG_reference_type: | |
f792889a | 12386 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
12387 | break; |
12388 | case DW_TAG_const_type: | |
f792889a | 12389 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
12390 | break; |
12391 | case DW_TAG_volatile_type: | |
f792889a | 12392 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
12393 | break; |
12394 | case DW_TAG_string_type: | |
f792889a | 12395 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
12396 | break; |
12397 | case DW_TAG_typedef: | |
f792889a | 12398 | this_type = read_typedef (die, cu); |
c906108c | 12399 | break; |
a02abb62 | 12400 | case DW_TAG_subrange_type: |
f792889a | 12401 | this_type = read_subrange_type (die, cu); |
a02abb62 | 12402 | break; |
c906108c | 12403 | case DW_TAG_base_type: |
f792889a | 12404 | this_type = read_base_type (die, cu); |
c906108c | 12405 | break; |
81a17f79 | 12406 | case DW_TAG_unspecified_type: |
f792889a | 12407 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 12408 | break; |
0114d602 DJ |
12409 | case DW_TAG_namespace: |
12410 | this_type = read_namespace_type (die, cu); | |
12411 | break; | |
f55ee35c JK |
12412 | case DW_TAG_module: |
12413 | this_type = read_module_type (die, cu); | |
12414 | break; | |
c906108c | 12415 | default: |
3e43a32a MS |
12416 | complaint (&symfile_complaints, |
12417 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 12418 | dwarf_tag_name (die->tag)); |
c906108c SS |
12419 | break; |
12420 | } | |
63d06c5c | 12421 | |
f792889a | 12422 | return this_type; |
63d06c5c DC |
12423 | } |
12424 | ||
abc72ce4 DE |
12425 | /* See if we can figure out if the class lives in a namespace. We do |
12426 | this by looking for a member function; its demangled name will | |
12427 | contain namespace info, if there is any. | |
12428 | Return the computed name or NULL. | |
12429 | Space for the result is allocated on the objfile's obstack. | |
12430 | This is the full-die version of guess_partial_die_structure_name. | |
12431 | In this case we know DIE has no useful parent. */ | |
12432 | ||
12433 | static char * | |
12434 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
12435 | { | |
12436 | struct die_info *spec_die; | |
12437 | struct dwarf2_cu *spec_cu; | |
12438 | struct die_info *child; | |
12439 | ||
12440 | spec_cu = cu; | |
12441 | spec_die = die_specification (die, &spec_cu); | |
12442 | if (spec_die != NULL) | |
12443 | { | |
12444 | die = spec_die; | |
12445 | cu = spec_cu; | |
12446 | } | |
12447 | ||
12448 | for (child = die->child; | |
12449 | child != NULL; | |
12450 | child = child->sibling) | |
12451 | { | |
12452 | if (child->tag == DW_TAG_subprogram) | |
12453 | { | |
12454 | struct attribute *attr; | |
12455 | ||
12456 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
12457 | if (attr == NULL) | |
12458 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
12459 | if (attr != NULL) | |
12460 | { | |
12461 | char *actual_name | |
12462 | = language_class_name_from_physname (cu->language_defn, | |
12463 | DW_STRING (attr)); | |
12464 | char *name = NULL; | |
12465 | ||
12466 | if (actual_name != NULL) | |
12467 | { | |
12468 | char *die_name = dwarf2_name (die, cu); | |
12469 | ||
12470 | if (die_name != NULL | |
12471 | && strcmp (die_name, actual_name) != 0) | |
12472 | { | |
12473 | /* Strip off the class name from the full name. | |
12474 | We want the prefix. */ | |
12475 | int die_name_len = strlen (die_name); | |
12476 | int actual_name_len = strlen (actual_name); | |
12477 | ||
12478 | /* Test for '::' as a sanity check. */ | |
12479 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
12480 | && actual_name[actual_name_len |
12481 | - die_name_len - 1] == ':') | |
abc72ce4 DE |
12482 | name = |
12483 | obsavestring (actual_name, | |
12484 | actual_name_len - die_name_len - 2, | |
12485 | &cu->objfile->objfile_obstack); | |
12486 | } | |
12487 | } | |
12488 | xfree (actual_name); | |
12489 | return name; | |
12490 | } | |
12491 | } | |
12492 | } | |
12493 | ||
12494 | return NULL; | |
12495 | } | |
12496 | ||
96408a79 SA |
12497 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
12498 | prefix part in such case. See | |
12499 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
12500 | ||
12501 | static char * | |
12502 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) | |
12503 | { | |
12504 | struct attribute *attr; | |
12505 | char *base; | |
12506 | ||
12507 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
12508 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
12509 | return NULL; | |
12510 | ||
12511 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
12512 | if (attr != NULL && DW_STRING (attr) != NULL) | |
12513 | return NULL; | |
12514 | ||
12515 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
12516 | if (attr == NULL) | |
12517 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
12518 | if (attr == NULL || DW_STRING (attr) == NULL) | |
12519 | return NULL; | |
12520 | ||
12521 | /* dwarf2_name had to be already called. */ | |
12522 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
12523 | ||
12524 | /* Strip the base name, keep any leading namespaces/classes. */ | |
12525 | base = strrchr (DW_STRING (attr), ':'); | |
12526 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
12527 | return ""; | |
12528 | ||
12529 | return obsavestring (DW_STRING (attr), &base[-1] - DW_STRING (attr), | |
12530 | &cu->objfile->objfile_obstack); | |
12531 | } | |
12532 | ||
fdde2d81 | 12533 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 12534 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 12535 | |
0114d602 DJ |
12536 | For example, if we're within the method foo() in the following |
12537 | code: | |
12538 | ||
12539 | namespace N { | |
12540 | class C { | |
12541 | void foo () { | |
12542 | } | |
12543 | }; | |
12544 | } | |
12545 | ||
12546 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
12547 | |
12548 | static char * | |
e142c38c | 12549 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 12550 | { |
0114d602 DJ |
12551 | struct die_info *parent, *spec_die; |
12552 | struct dwarf2_cu *spec_cu; | |
12553 | struct type *parent_type; | |
96408a79 | 12554 | char *retval; |
63d06c5c | 12555 | |
f55ee35c JK |
12556 | if (cu->language != language_cplus && cu->language != language_java |
12557 | && cu->language != language_fortran) | |
0114d602 DJ |
12558 | return ""; |
12559 | ||
96408a79 SA |
12560 | retval = anonymous_struct_prefix (die, cu); |
12561 | if (retval) | |
12562 | return retval; | |
12563 | ||
0114d602 DJ |
12564 | /* We have to be careful in the presence of DW_AT_specification. |
12565 | For example, with GCC 3.4, given the code | |
12566 | ||
12567 | namespace N { | |
12568 | void foo() { | |
12569 | // Definition of N::foo. | |
12570 | } | |
12571 | } | |
12572 | ||
12573 | then we'll have a tree of DIEs like this: | |
12574 | ||
12575 | 1: DW_TAG_compile_unit | |
12576 | 2: DW_TAG_namespace // N | |
12577 | 3: DW_TAG_subprogram // declaration of N::foo | |
12578 | 4: DW_TAG_subprogram // definition of N::foo | |
12579 | DW_AT_specification // refers to die #3 | |
12580 | ||
12581 | Thus, when processing die #4, we have to pretend that we're in | |
12582 | the context of its DW_AT_specification, namely the contex of die | |
12583 | #3. */ | |
12584 | spec_cu = cu; | |
12585 | spec_die = die_specification (die, &spec_cu); | |
12586 | if (spec_die == NULL) | |
12587 | parent = die->parent; | |
12588 | else | |
63d06c5c | 12589 | { |
0114d602 DJ |
12590 | parent = spec_die->parent; |
12591 | cu = spec_cu; | |
63d06c5c | 12592 | } |
0114d602 DJ |
12593 | |
12594 | if (parent == NULL) | |
12595 | return ""; | |
98bfdba5 PA |
12596 | else if (parent->building_fullname) |
12597 | { | |
12598 | const char *name; | |
12599 | const char *parent_name; | |
12600 | ||
12601 | /* It has been seen on RealView 2.2 built binaries, | |
12602 | DW_TAG_template_type_param types actually _defined_ as | |
12603 | children of the parent class: | |
12604 | ||
12605 | enum E {}; | |
12606 | template class <class Enum> Class{}; | |
12607 | Class<enum E> class_e; | |
12608 | ||
12609 | 1: DW_TAG_class_type (Class) | |
12610 | 2: DW_TAG_enumeration_type (E) | |
12611 | 3: DW_TAG_enumerator (enum1:0) | |
12612 | 3: DW_TAG_enumerator (enum2:1) | |
12613 | ... | |
12614 | 2: DW_TAG_template_type_param | |
12615 | DW_AT_type DW_FORM_ref_udata (E) | |
12616 | ||
12617 | Besides being broken debug info, it can put GDB into an | |
12618 | infinite loop. Consider: | |
12619 | ||
12620 | When we're building the full name for Class<E>, we'll start | |
12621 | at Class, and go look over its template type parameters, | |
12622 | finding E. We'll then try to build the full name of E, and | |
12623 | reach here. We're now trying to build the full name of E, | |
12624 | and look over the parent DIE for containing scope. In the | |
12625 | broken case, if we followed the parent DIE of E, we'd again | |
12626 | find Class, and once again go look at its template type | |
12627 | arguments, etc., etc. Simply don't consider such parent die | |
12628 | as source-level parent of this die (it can't be, the language | |
12629 | doesn't allow it), and break the loop here. */ | |
12630 | name = dwarf2_name (die, cu); | |
12631 | parent_name = dwarf2_name (parent, cu); | |
12632 | complaint (&symfile_complaints, | |
12633 | _("template param type '%s' defined within parent '%s'"), | |
12634 | name ? name : "<unknown>", | |
12635 | parent_name ? parent_name : "<unknown>"); | |
12636 | return ""; | |
12637 | } | |
63d06c5c | 12638 | else |
0114d602 DJ |
12639 | switch (parent->tag) |
12640 | { | |
63d06c5c | 12641 | case DW_TAG_namespace: |
0114d602 | 12642 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
12643 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
12644 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
12645 | Work around this problem here. */ | |
12646 | if (cu->language == language_cplus | |
12647 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
12648 | return ""; | |
0114d602 DJ |
12649 | /* We give a name to even anonymous namespaces. */ |
12650 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 12651 | case DW_TAG_class_type: |
680b30c7 | 12652 | case DW_TAG_interface_type: |
63d06c5c | 12653 | case DW_TAG_structure_type: |
0114d602 | 12654 | case DW_TAG_union_type: |
f55ee35c | 12655 | case DW_TAG_module: |
0114d602 DJ |
12656 | parent_type = read_type_die (parent, cu); |
12657 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
12658 | return TYPE_TAG_NAME (parent_type); | |
12659 | else | |
12660 | /* An anonymous structure is only allowed non-static data | |
12661 | members; no typedefs, no member functions, et cetera. | |
12662 | So it does not need a prefix. */ | |
12663 | return ""; | |
abc72ce4 DE |
12664 | case DW_TAG_compile_unit: |
12665 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ | |
12666 | if (cu->language == language_cplus | |
8b70b953 | 12667 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
12668 | && die->child != NULL |
12669 | && (die->tag == DW_TAG_class_type | |
12670 | || die->tag == DW_TAG_structure_type | |
12671 | || die->tag == DW_TAG_union_type)) | |
12672 | { | |
12673 | char *name = guess_full_die_structure_name (die, cu); | |
12674 | if (name != NULL) | |
12675 | return name; | |
12676 | } | |
12677 | return ""; | |
63d06c5c | 12678 | default: |
8176b9b8 | 12679 | return determine_prefix (parent, cu); |
63d06c5c | 12680 | } |
63d06c5c DC |
12681 | } |
12682 | ||
3e43a32a MS |
12683 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
12684 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
12685 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
12686 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
12687 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 12688 | |
f55ee35c | 12689 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
12690 | |
12691 | static char * | |
f55ee35c JK |
12692 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
12693 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 12694 | { |
f55ee35c | 12695 | const char *lead = ""; |
5c315b68 | 12696 | const char *sep; |
63d06c5c | 12697 | |
3e43a32a MS |
12698 | if (suffix == NULL || suffix[0] == '\0' |
12699 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
12700 | sep = ""; |
12701 | else if (cu->language == language_java) | |
12702 | sep = "."; | |
f55ee35c JK |
12703 | else if (cu->language == language_fortran && physname) |
12704 | { | |
12705 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
12706 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
12707 | ||
12708 | lead = "__"; | |
12709 | sep = "_MOD_"; | |
12710 | } | |
987504bb JJ |
12711 | else |
12712 | sep = "::"; | |
63d06c5c | 12713 | |
6dd47d34 DE |
12714 | if (prefix == NULL) |
12715 | prefix = ""; | |
12716 | if (suffix == NULL) | |
12717 | suffix = ""; | |
12718 | ||
987504bb JJ |
12719 | if (obs == NULL) |
12720 | { | |
3e43a32a MS |
12721 | char *retval |
12722 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 12723 | |
f55ee35c JK |
12724 | strcpy (retval, lead); |
12725 | strcat (retval, prefix); | |
6dd47d34 DE |
12726 | strcat (retval, sep); |
12727 | strcat (retval, suffix); | |
63d06c5c DC |
12728 | return retval; |
12729 | } | |
987504bb JJ |
12730 | else |
12731 | { | |
12732 | /* We have an obstack. */ | |
f55ee35c | 12733 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 12734 | } |
63d06c5c DC |
12735 | } |
12736 | ||
c906108c SS |
12737 | /* Return sibling of die, NULL if no sibling. */ |
12738 | ||
f9aca02d | 12739 | static struct die_info * |
fba45db2 | 12740 | sibling_die (struct die_info *die) |
c906108c | 12741 | { |
639d11d3 | 12742 | return die->sibling; |
c906108c SS |
12743 | } |
12744 | ||
71c25dea TT |
12745 | /* Get name of a die, return NULL if not found. */ |
12746 | ||
12747 | static char * | |
12748 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
12749 | struct obstack *obstack) | |
12750 | { | |
12751 | if (name && cu->language == language_cplus) | |
12752 | { | |
12753 | char *canon_name = cp_canonicalize_string (name); | |
12754 | ||
12755 | if (canon_name != NULL) | |
12756 | { | |
12757 | if (strcmp (canon_name, name) != 0) | |
12758 | name = obsavestring (canon_name, strlen (canon_name), | |
12759 | obstack); | |
12760 | xfree (canon_name); | |
12761 | } | |
12762 | } | |
12763 | ||
12764 | return name; | |
c906108c SS |
12765 | } |
12766 | ||
9219021c DC |
12767 | /* Get name of a die, return NULL if not found. */ |
12768 | ||
12769 | static char * | |
e142c38c | 12770 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
12771 | { |
12772 | struct attribute *attr; | |
12773 | ||
e142c38c | 12774 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 TT |
12775 | if ((!attr || !DW_STRING (attr)) |
12776 | && die->tag != DW_TAG_class_type | |
12777 | && die->tag != DW_TAG_interface_type | |
12778 | && die->tag != DW_TAG_structure_type | |
12779 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
12780 | return NULL; |
12781 | ||
12782 | switch (die->tag) | |
12783 | { | |
12784 | case DW_TAG_compile_unit: | |
12785 | /* Compilation units have a DW_AT_name that is a filename, not | |
12786 | a source language identifier. */ | |
12787 | case DW_TAG_enumeration_type: | |
12788 | case DW_TAG_enumerator: | |
12789 | /* These tags always have simple identifiers already; no need | |
12790 | to canonicalize them. */ | |
12791 | return DW_STRING (attr); | |
907af001 | 12792 | |
418835cc KS |
12793 | case DW_TAG_subprogram: |
12794 | /* Java constructors will all be named "<init>", so return | |
12795 | the class name when we see this special case. */ | |
12796 | if (cu->language == language_java | |
12797 | && DW_STRING (attr) != NULL | |
12798 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
12799 | { | |
12800 | struct dwarf2_cu *spec_cu = cu; | |
12801 | struct die_info *spec_die; | |
12802 | ||
12803 | /* GCJ will output '<init>' for Java constructor names. | |
12804 | For this special case, return the name of the parent class. */ | |
12805 | ||
12806 | /* GCJ may output suprogram DIEs with AT_specification set. | |
12807 | If so, use the name of the specified DIE. */ | |
12808 | spec_die = die_specification (die, &spec_cu); | |
12809 | if (spec_die != NULL) | |
12810 | return dwarf2_name (spec_die, spec_cu); | |
12811 | ||
12812 | do | |
12813 | { | |
12814 | die = die->parent; | |
12815 | if (die->tag == DW_TAG_class_type) | |
12816 | return dwarf2_name (die, cu); | |
12817 | } | |
12818 | while (die->tag != DW_TAG_compile_unit); | |
12819 | } | |
907af001 UW |
12820 | break; |
12821 | ||
12822 | case DW_TAG_class_type: | |
12823 | case DW_TAG_interface_type: | |
12824 | case DW_TAG_structure_type: | |
12825 | case DW_TAG_union_type: | |
12826 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
12827 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
12828 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
12829 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 TT |
12830 | if (attr && DW_STRING (attr) |
12831 | && (strncmp (DW_STRING (attr), "._", 2) == 0 | |
12832 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0)) | |
907af001 | 12833 | return NULL; |
53832f31 TT |
12834 | |
12835 | /* GCC might emit a nameless typedef that has a linkage name. See | |
12836 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
12837 | if (!attr || DW_STRING (attr) == NULL) | |
12838 | { | |
df5c6c50 | 12839 | char *demangled = NULL; |
53832f31 TT |
12840 | |
12841 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
12842 | if (attr == NULL) | |
12843 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
12844 | ||
12845 | if (attr == NULL || DW_STRING (attr) == NULL) | |
12846 | return NULL; | |
12847 | ||
df5c6c50 JK |
12848 | /* Avoid demangling DW_STRING (attr) the second time on a second |
12849 | call for the same DIE. */ | |
12850 | if (!DW_STRING_IS_CANONICAL (attr)) | |
12851 | demangled = cplus_demangle (DW_STRING (attr), DMGL_TYPES); | |
53832f31 TT |
12852 | |
12853 | if (demangled) | |
12854 | { | |
96408a79 SA |
12855 | char *base; |
12856 | ||
53832f31 | 12857 | /* FIXME: we already did this for the partial symbol... */ |
96408a79 SA |
12858 | DW_STRING (attr) = obsavestring (demangled, strlen (demangled), |
12859 | &cu->objfile->objfile_obstack); | |
53832f31 TT |
12860 | DW_STRING_IS_CANONICAL (attr) = 1; |
12861 | xfree (demangled); | |
96408a79 SA |
12862 | |
12863 | /* Strip any leading namespaces/classes, keep only the base name. | |
12864 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
12865 | base = strrchr (DW_STRING (attr), ':'); | |
12866 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
12867 | return &base[1]; | |
12868 | else | |
12869 | return DW_STRING (attr); | |
53832f31 TT |
12870 | } |
12871 | } | |
907af001 UW |
12872 | break; |
12873 | ||
71c25dea | 12874 | default: |
907af001 UW |
12875 | break; |
12876 | } | |
12877 | ||
12878 | if (!DW_STRING_IS_CANONICAL (attr)) | |
12879 | { | |
12880 | DW_STRING (attr) | |
12881 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
12882 | &cu->objfile->objfile_obstack); | |
12883 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 12884 | } |
907af001 | 12885 | return DW_STRING (attr); |
9219021c DC |
12886 | } |
12887 | ||
12888 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
12889 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
12890 | containing the return value on output. */ | |
9219021c DC |
12891 | |
12892 | static struct die_info * | |
f2f0e013 | 12893 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
12894 | { |
12895 | struct attribute *attr; | |
9219021c | 12896 | |
f2f0e013 | 12897 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
12898 | if (attr == NULL) |
12899 | return NULL; | |
12900 | ||
f2f0e013 | 12901 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
12902 | } |
12903 | ||
c906108c SS |
12904 | /* Convert a DIE tag into its string name. */ |
12905 | ||
12906 | static char * | |
aa1ee363 | 12907 | dwarf_tag_name (unsigned tag) |
c906108c SS |
12908 | { |
12909 | switch (tag) | |
12910 | { | |
12911 | case DW_TAG_padding: | |
12912 | return "DW_TAG_padding"; | |
12913 | case DW_TAG_array_type: | |
12914 | return "DW_TAG_array_type"; | |
12915 | case DW_TAG_class_type: | |
12916 | return "DW_TAG_class_type"; | |
12917 | case DW_TAG_entry_point: | |
12918 | return "DW_TAG_entry_point"; | |
12919 | case DW_TAG_enumeration_type: | |
12920 | return "DW_TAG_enumeration_type"; | |
12921 | case DW_TAG_formal_parameter: | |
12922 | return "DW_TAG_formal_parameter"; | |
12923 | case DW_TAG_imported_declaration: | |
12924 | return "DW_TAG_imported_declaration"; | |
12925 | case DW_TAG_label: | |
12926 | return "DW_TAG_label"; | |
12927 | case DW_TAG_lexical_block: | |
12928 | return "DW_TAG_lexical_block"; | |
12929 | case DW_TAG_member: | |
12930 | return "DW_TAG_member"; | |
12931 | case DW_TAG_pointer_type: | |
12932 | return "DW_TAG_pointer_type"; | |
12933 | case DW_TAG_reference_type: | |
12934 | return "DW_TAG_reference_type"; | |
12935 | case DW_TAG_compile_unit: | |
12936 | return "DW_TAG_compile_unit"; | |
12937 | case DW_TAG_string_type: | |
12938 | return "DW_TAG_string_type"; | |
12939 | case DW_TAG_structure_type: | |
12940 | return "DW_TAG_structure_type"; | |
12941 | case DW_TAG_subroutine_type: | |
12942 | return "DW_TAG_subroutine_type"; | |
12943 | case DW_TAG_typedef: | |
12944 | return "DW_TAG_typedef"; | |
12945 | case DW_TAG_union_type: | |
12946 | return "DW_TAG_union_type"; | |
12947 | case DW_TAG_unspecified_parameters: | |
12948 | return "DW_TAG_unspecified_parameters"; | |
12949 | case DW_TAG_variant: | |
12950 | return "DW_TAG_variant"; | |
12951 | case DW_TAG_common_block: | |
12952 | return "DW_TAG_common_block"; | |
12953 | case DW_TAG_common_inclusion: | |
12954 | return "DW_TAG_common_inclusion"; | |
12955 | case DW_TAG_inheritance: | |
12956 | return "DW_TAG_inheritance"; | |
12957 | case DW_TAG_inlined_subroutine: | |
12958 | return "DW_TAG_inlined_subroutine"; | |
12959 | case DW_TAG_module: | |
12960 | return "DW_TAG_module"; | |
12961 | case DW_TAG_ptr_to_member_type: | |
12962 | return "DW_TAG_ptr_to_member_type"; | |
12963 | case DW_TAG_set_type: | |
12964 | return "DW_TAG_set_type"; | |
12965 | case DW_TAG_subrange_type: | |
12966 | return "DW_TAG_subrange_type"; | |
12967 | case DW_TAG_with_stmt: | |
12968 | return "DW_TAG_with_stmt"; | |
12969 | case DW_TAG_access_declaration: | |
12970 | return "DW_TAG_access_declaration"; | |
12971 | case DW_TAG_base_type: | |
12972 | return "DW_TAG_base_type"; | |
12973 | case DW_TAG_catch_block: | |
12974 | return "DW_TAG_catch_block"; | |
12975 | case DW_TAG_const_type: | |
12976 | return "DW_TAG_const_type"; | |
12977 | case DW_TAG_constant: | |
12978 | return "DW_TAG_constant"; | |
12979 | case DW_TAG_enumerator: | |
12980 | return "DW_TAG_enumerator"; | |
12981 | case DW_TAG_file_type: | |
12982 | return "DW_TAG_file_type"; | |
12983 | case DW_TAG_friend: | |
12984 | return "DW_TAG_friend"; | |
12985 | case DW_TAG_namelist: | |
12986 | return "DW_TAG_namelist"; | |
12987 | case DW_TAG_namelist_item: | |
12988 | return "DW_TAG_namelist_item"; | |
12989 | case DW_TAG_packed_type: | |
12990 | return "DW_TAG_packed_type"; | |
12991 | case DW_TAG_subprogram: | |
12992 | return "DW_TAG_subprogram"; | |
12993 | case DW_TAG_template_type_param: | |
12994 | return "DW_TAG_template_type_param"; | |
12995 | case DW_TAG_template_value_param: | |
12996 | return "DW_TAG_template_value_param"; | |
12997 | case DW_TAG_thrown_type: | |
12998 | return "DW_TAG_thrown_type"; | |
12999 | case DW_TAG_try_block: | |
13000 | return "DW_TAG_try_block"; | |
13001 | case DW_TAG_variant_part: | |
13002 | return "DW_TAG_variant_part"; | |
13003 | case DW_TAG_variable: | |
13004 | return "DW_TAG_variable"; | |
13005 | case DW_TAG_volatile_type: | |
13006 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
13007 | case DW_TAG_dwarf_procedure: |
13008 | return "DW_TAG_dwarf_procedure"; | |
13009 | case DW_TAG_restrict_type: | |
13010 | return "DW_TAG_restrict_type"; | |
13011 | case DW_TAG_interface_type: | |
13012 | return "DW_TAG_interface_type"; | |
13013 | case DW_TAG_namespace: | |
13014 | return "DW_TAG_namespace"; | |
13015 | case DW_TAG_imported_module: | |
13016 | return "DW_TAG_imported_module"; | |
13017 | case DW_TAG_unspecified_type: | |
13018 | return "DW_TAG_unspecified_type"; | |
13019 | case DW_TAG_partial_unit: | |
13020 | return "DW_TAG_partial_unit"; | |
13021 | case DW_TAG_imported_unit: | |
13022 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
13023 | case DW_TAG_condition: |
13024 | return "DW_TAG_condition"; | |
13025 | case DW_TAG_shared_type: | |
13026 | return "DW_TAG_shared_type"; | |
348e048f DE |
13027 | case DW_TAG_type_unit: |
13028 | return "DW_TAG_type_unit"; | |
c906108c SS |
13029 | case DW_TAG_MIPS_loop: |
13030 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
13031 | case DW_TAG_HP_array_descriptor: |
13032 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
13033 | case DW_TAG_format_label: |
13034 | return "DW_TAG_format_label"; | |
13035 | case DW_TAG_function_template: | |
13036 | return "DW_TAG_function_template"; | |
13037 | case DW_TAG_class_template: | |
13038 | return "DW_TAG_class_template"; | |
b7619582 GF |
13039 | case DW_TAG_GNU_BINCL: |
13040 | return "DW_TAG_GNU_BINCL"; | |
13041 | case DW_TAG_GNU_EINCL: | |
13042 | return "DW_TAG_GNU_EINCL"; | |
13043 | case DW_TAG_upc_shared_type: | |
13044 | return "DW_TAG_upc_shared_type"; | |
13045 | case DW_TAG_upc_strict_type: | |
13046 | return "DW_TAG_upc_strict_type"; | |
13047 | case DW_TAG_upc_relaxed_type: | |
13048 | return "DW_TAG_upc_relaxed_type"; | |
13049 | case DW_TAG_PGI_kanji_type: | |
13050 | return "DW_TAG_PGI_kanji_type"; | |
13051 | case DW_TAG_PGI_interface_block: | |
13052 | return "DW_TAG_PGI_interface_block"; | |
96408a79 SA |
13053 | case DW_TAG_GNU_call_site: |
13054 | return "DW_TAG_GNU_call_site"; | |
c906108c SS |
13055 | default: |
13056 | return "DW_TAG_<unknown>"; | |
13057 | } | |
13058 | } | |
13059 | ||
13060 | /* Convert a DWARF attribute code into its string name. */ | |
13061 | ||
13062 | static char * | |
aa1ee363 | 13063 | dwarf_attr_name (unsigned attr) |
c906108c SS |
13064 | { |
13065 | switch (attr) | |
13066 | { | |
13067 | case DW_AT_sibling: | |
13068 | return "DW_AT_sibling"; | |
13069 | case DW_AT_location: | |
13070 | return "DW_AT_location"; | |
13071 | case DW_AT_name: | |
13072 | return "DW_AT_name"; | |
13073 | case DW_AT_ordering: | |
13074 | return "DW_AT_ordering"; | |
13075 | case DW_AT_subscr_data: | |
13076 | return "DW_AT_subscr_data"; | |
13077 | case DW_AT_byte_size: | |
13078 | return "DW_AT_byte_size"; | |
13079 | case DW_AT_bit_offset: | |
13080 | return "DW_AT_bit_offset"; | |
13081 | case DW_AT_bit_size: | |
13082 | return "DW_AT_bit_size"; | |
13083 | case DW_AT_element_list: | |
13084 | return "DW_AT_element_list"; | |
13085 | case DW_AT_stmt_list: | |
13086 | return "DW_AT_stmt_list"; | |
13087 | case DW_AT_low_pc: | |
13088 | return "DW_AT_low_pc"; | |
13089 | case DW_AT_high_pc: | |
13090 | return "DW_AT_high_pc"; | |
13091 | case DW_AT_language: | |
13092 | return "DW_AT_language"; | |
13093 | case DW_AT_member: | |
13094 | return "DW_AT_member"; | |
13095 | case DW_AT_discr: | |
13096 | return "DW_AT_discr"; | |
13097 | case DW_AT_discr_value: | |
13098 | return "DW_AT_discr_value"; | |
13099 | case DW_AT_visibility: | |
13100 | return "DW_AT_visibility"; | |
13101 | case DW_AT_import: | |
13102 | return "DW_AT_import"; | |
13103 | case DW_AT_string_length: | |
13104 | return "DW_AT_string_length"; | |
13105 | case DW_AT_common_reference: | |
13106 | return "DW_AT_common_reference"; | |
13107 | case DW_AT_comp_dir: | |
13108 | return "DW_AT_comp_dir"; | |
13109 | case DW_AT_const_value: | |
13110 | return "DW_AT_const_value"; | |
13111 | case DW_AT_containing_type: | |
13112 | return "DW_AT_containing_type"; | |
13113 | case DW_AT_default_value: | |
13114 | return "DW_AT_default_value"; | |
13115 | case DW_AT_inline: | |
13116 | return "DW_AT_inline"; | |
13117 | case DW_AT_is_optional: | |
13118 | return "DW_AT_is_optional"; | |
13119 | case DW_AT_lower_bound: | |
13120 | return "DW_AT_lower_bound"; | |
13121 | case DW_AT_producer: | |
13122 | return "DW_AT_producer"; | |
13123 | case DW_AT_prototyped: | |
13124 | return "DW_AT_prototyped"; | |
13125 | case DW_AT_return_addr: | |
13126 | return "DW_AT_return_addr"; | |
13127 | case DW_AT_start_scope: | |
13128 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
13129 | case DW_AT_bit_stride: |
13130 | return "DW_AT_bit_stride"; | |
c906108c SS |
13131 | case DW_AT_upper_bound: |
13132 | return "DW_AT_upper_bound"; | |
13133 | case DW_AT_abstract_origin: | |
13134 | return "DW_AT_abstract_origin"; | |
13135 | case DW_AT_accessibility: | |
13136 | return "DW_AT_accessibility"; | |
13137 | case DW_AT_address_class: | |
13138 | return "DW_AT_address_class"; | |
13139 | case DW_AT_artificial: | |
13140 | return "DW_AT_artificial"; | |
13141 | case DW_AT_base_types: | |
13142 | return "DW_AT_base_types"; | |
13143 | case DW_AT_calling_convention: | |
13144 | return "DW_AT_calling_convention"; | |
13145 | case DW_AT_count: | |
13146 | return "DW_AT_count"; | |
13147 | case DW_AT_data_member_location: | |
13148 | return "DW_AT_data_member_location"; | |
13149 | case DW_AT_decl_column: | |
13150 | return "DW_AT_decl_column"; | |
13151 | case DW_AT_decl_file: | |
13152 | return "DW_AT_decl_file"; | |
13153 | case DW_AT_decl_line: | |
13154 | return "DW_AT_decl_line"; | |
13155 | case DW_AT_declaration: | |
13156 | return "DW_AT_declaration"; | |
13157 | case DW_AT_discr_list: | |
13158 | return "DW_AT_discr_list"; | |
13159 | case DW_AT_encoding: | |
13160 | return "DW_AT_encoding"; | |
13161 | case DW_AT_external: | |
13162 | return "DW_AT_external"; | |
13163 | case DW_AT_frame_base: | |
13164 | return "DW_AT_frame_base"; | |
13165 | case DW_AT_friend: | |
13166 | return "DW_AT_friend"; | |
13167 | case DW_AT_identifier_case: | |
13168 | return "DW_AT_identifier_case"; | |
13169 | case DW_AT_macro_info: | |
13170 | return "DW_AT_macro_info"; | |
13171 | case DW_AT_namelist_items: | |
13172 | return "DW_AT_namelist_items"; | |
13173 | case DW_AT_priority: | |
13174 | return "DW_AT_priority"; | |
13175 | case DW_AT_segment: | |
13176 | return "DW_AT_segment"; | |
13177 | case DW_AT_specification: | |
13178 | return "DW_AT_specification"; | |
13179 | case DW_AT_static_link: | |
13180 | return "DW_AT_static_link"; | |
13181 | case DW_AT_type: | |
13182 | return "DW_AT_type"; | |
13183 | case DW_AT_use_location: | |
13184 | return "DW_AT_use_location"; | |
13185 | case DW_AT_variable_parameter: | |
13186 | return "DW_AT_variable_parameter"; | |
13187 | case DW_AT_virtuality: | |
13188 | return "DW_AT_virtuality"; | |
13189 | case DW_AT_vtable_elem_location: | |
13190 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 13191 | /* DWARF 3 values. */ |
d9fa45fe DC |
13192 | case DW_AT_allocated: |
13193 | return "DW_AT_allocated"; | |
13194 | case DW_AT_associated: | |
13195 | return "DW_AT_associated"; | |
13196 | case DW_AT_data_location: | |
13197 | return "DW_AT_data_location"; | |
09fa0d7c JK |
13198 | case DW_AT_byte_stride: |
13199 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
13200 | case DW_AT_entry_pc: |
13201 | return "DW_AT_entry_pc"; | |
13202 | case DW_AT_use_UTF8: | |
13203 | return "DW_AT_use_UTF8"; | |
13204 | case DW_AT_extension: | |
13205 | return "DW_AT_extension"; | |
13206 | case DW_AT_ranges: | |
13207 | return "DW_AT_ranges"; | |
13208 | case DW_AT_trampoline: | |
13209 | return "DW_AT_trampoline"; | |
13210 | case DW_AT_call_column: | |
13211 | return "DW_AT_call_column"; | |
13212 | case DW_AT_call_file: | |
13213 | return "DW_AT_call_file"; | |
13214 | case DW_AT_call_line: | |
13215 | return "DW_AT_call_line"; | |
b7619582 GF |
13216 | case DW_AT_description: |
13217 | return "DW_AT_description"; | |
13218 | case DW_AT_binary_scale: | |
13219 | return "DW_AT_binary_scale"; | |
13220 | case DW_AT_decimal_scale: | |
13221 | return "DW_AT_decimal_scale"; | |
13222 | case DW_AT_small: | |
13223 | return "DW_AT_small"; | |
13224 | case DW_AT_decimal_sign: | |
13225 | return "DW_AT_decimal_sign"; | |
13226 | case DW_AT_digit_count: | |
13227 | return "DW_AT_digit_count"; | |
13228 | case DW_AT_picture_string: | |
13229 | return "DW_AT_picture_string"; | |
13230 | case DW_AT_mutable: | |
13231 | return "DW_AT_mutable"; | |
13232 | case DW_AT_threads_scaled: | |
13233 | return "DW_AT_threads_scaled"; | |
13234 | case DW_AT_explicit: | |
13235 | return "DW_AT_explicit"; | |
13236 | case DW_AT_object_pointer: | |
13237 | return "DW_AT_object_pointer"; | |
13238 | case DW_AT_endianity: | |
13239 | return "DW_AT_endianity"; | |
13240 | case DW_AT_elemental: | |
13241 | return "DW_AT_elemental"; | |
13242 | case DW_AT_pure: | |
13243 | return "DW_AT_pure"; | |
13244 | case DW_AT_recursive: | |
13245 | return "DW_AT_recursive"; | |
348e048f DE |
13246 | /* DWARF 4 values. */ |
13247 | case DW_AT_signature: | |
13248 | return "DW_AT_signature"; | |
31ef98ae TT |
13249 | case DW_AT_linkage_name: |
13250 | return "DW_AT_linkage_name"; | |
b7619582 | 13251 | /* SGI/MIPS extensions. */ |
c764a876 | 13252 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
c906108c SS |
13253 | case DW_AT_MIPS_fde: |
13254 | return "DW_AT_MIPS_fde"; | |
c764a876 | 13255 | #endif |
c906108c SS |
13256 | case DW_AT_MIPS_loop_begin: |
13257 | return "DW_AT_MIPS_loop_begin"; | |
13258 | case DW_AT_MIPS_tail_loop_begin: | |
13259 | return "DW_AT_MIPS_tail_loop_begin"; | |
13260 | case DW_AT_MIPS_epilog_begin: | |
13261 | return "DW_AT_MIPS_epilog_begin"; | |
13262 | case DW_AT_MIPS_loop_unroll_factor: | |
13263 | return "DW_AT_MIPS_loop_unroll_factor"; | |
13264 | case DW_AT_MIPS_software_pipeline_depth: | |
13265 | return "DW_AT_MIPS_software_pipeline_depth"; | |
13266 | case DW_AT_MIPS_linkage_name: | |
13267 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
13268 | case DW_AT_MIPS_stride: |
13269 | return "DW_AT_MIPS_stride"; | |
13270 | case DW_AT_MIPS_abstract_name: | |
13271 | return "DW_AT_MIPS_abstract_name"; | |
13272 | case DW_AT_MIPS_clone_origin: | |
13273 | return "DW_AT_MIPS_clone_origin"; | |
13274 | case DW_AT_MIPS_has_inlines: | |
13275 | return "DW_AT_MIPS_has_inlines"; | |
b7619582 | 13276 | /* HP extensions. */ |
c764a876 | 13277 | #ifndef MIPS /* collides with DW_AT_MIPS_fde */ |
b7619582 GF |
13278 | case DW_AT_HP_block_index: |
13279 | return "DW_AT_HP_block_index"; | |
c764a876 | 13280 | #endif |
b7619582 GF |
13281 | case DW_AT_HP_unmodifiable: |
13282 | return "DW_AT_HP_unmodifiable"; | |
13283 | case DW_AT_HP_actuals_stmt_list: | |
13284 | return "DW_AT_HP_actuals_stmt_list"; | |
13285 | case DW_AT_HP_proc_per_section: | |
13286 | return "DW_AT_HP_proc_per_section"; | |
13287 | case DW_AT_HP_raw_data_ptr: | |
13288 | return "DW_AT_HP_raw_data_ptr"; | |
13289 | case DW_AT_HP_pass_by_reference: | |
13290 | return "DW_AT_HP_pass_by_reference"; | |
13291 | case DW_AT_HP_opt_level: | |
13292 | return "DW_AT_HP_opt_level"; | |
13293 | case DW_AT_HP_prof_version_id: | |
13294 | return "DW_AT_HP_prof_version_id"; | |
13295 | case DW_AT_HP_opt_flags: | |
13296 | return "DW_AT_HP_opt_flags"; | |
13297 | case DW_AT_HP_cold_region_low_pc: | |
13298 | return "DW_AT_HP_cold_region_low_pc"; | |
13299 | case DW_AT_HP_cold_region_high_pc: | |
13300 | return "DW_AT_HP_cold_region_high_pc"; | |
13301 | case DW_AT_HP_all_variables_modifiable: | |
13302 | return "DW_AT_HP_all_variables_modifiable"; | |
13303 | case DW_AT_HP_linkage_name: | |
13304 | return "DW_AT_HP_linkage_name"; | |
13305 | case DW_AT_HP_prof_flags: | |
13306 | return "DW_AT_HP_prof_flags"; | |
13307 | /* GNU extensions. */ | |
c906108c SS |
13308 | case DW_AT_sf_names: |
13309 | return "DW_AT_sf_names"; | |
13310 | case DW_AT_src_info: | |
13311 | return "DW_AT_src_info"; | |
13312 | case DW_AT_mac_info: | |
13313 | return "DW_AT_mac_info"; | |
13314 | case DW_AT_src_coords: | |
13315 | return "DW_AT_src_coords"; | |
13316 | case DW_AT_body_begin: | |
13317 | return "DW_AT_body_begin"; | |
13318 | case DW_AT_body_end: | |
13319 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
13320 | case DW_AT_GNU_vector: |
13321 | return "DW_AT_GNU_vector"; | |
2de00c64 DE |
13322 | case DW_AT_GNU_odr_signature: |
13323 | return "DW_AT_GNU_odr_signature"; | |
b7619582 GF |
13324 | /* VMS extensions. */ |
13325 | case DW_AT_VMS_rtnbeg_pd_address: | |
13326 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
13327 | /* UPC extension. */ | |
13328 | case DW_AT_upc_threads_scaled: | |
13329 | return "DW_AT_upc_threads_scaled"; | |
13330 | /* PGI (STMicroelectronics) extensions. */ | |
13331 | case DW_AT_PGI_lbase: | |
13332 | return "DW_AT_PGI_lbase"; | |
13333 | case DW_AT_PGI_soffset: | |
13334 | return "DW_AT_PGI_soffset"; | |
13335 | case DW_AT_PGI_lstride: | |
13336 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
13337 | default: |
13338 | return "DW_AT_<unknown>"; | |
13339 | } | |
13340 | } | |
13341 | ||
13342 | /* Convert a DWARF value form code into its string name. */ | |
13343 | ||
13344 | static char * | |
aa1ee363 | 13345 | dwarf_form_name (unsigned form) |
c906108c SS |
13346 | { |
13347 | switch (form) | |
13348 | { | |
13349 | case DW_FORM_addr: | |
13350 | return "DW_FORM_addr"; | |
13351 | case DW_FORM_block2: | |
13352 | return "DW_FORM_block2"; | |
13353 | case DW_FORM_block4: | |
13354 | return "DW_FORM_block4"; | |
13355 | case DW_FORM_data2: | |
13356 | return "DW_FORM_data2"; | |
13357 | case DW_FORM_data4: | |
13358 | return "DW_FORM_data4"; | |
13359 | case DW_FORM_data8: | |
13360 | return "DW_FORM_data8"; | |
13361 | case DW_FORM_string: | |
13362 | return "DW_FORM_string"; | |
13363 | case DW_FORM_block: | |
13364 | return "DW_FORM_block"; | |
13365 | case DW_FORM_block1: | |
13366 | return "DW_FORM_block1"; | |
13367 | case DW_FORM_data1: | |
13368 | return "DW_FORM_data1"; | |
13369 | case DW_FORM_flag: | |
13370 | return "DW_FORM_flag"; | |
13371 | case DW_FORM_sdata: | |
13372 | return "DW_FORM_sdata"; | |
13373 | case DW_FORM_strp: | |
13374 | return "DW_FORM_strp"; | |
13375 | case DW_FORM_udata: | |
13376 | return "DW_FORM_udata"; | |
13377 | case DW_FORM_ref_addr: | |
13378 | return "DW_FORM_ref_addr"; | |
13379 | case DW_FORM_ref1: | |
13380 | return "DW_FORM_ref1"; | |
13381 | case DW_FORM_ref2: | |
13382 | return "DW_FORM_ref2"; | |
13383 | case DW_FORM_ref4: | |
13384 | return "DW_FORM_ref4"; | |
13385 | case DW_FORM_ref8: | |
13386 | return "DW_FORM_ref8"; | |
13387 | case DW_FORM_ref_udata: | |
13388 | return "DW_FORM_ref_udata"; | |
13389 | case DW_FORM_indirect: | |
13390 | return "DW_FORM_indirect"; | |
348e048f DE |
13391 | case DW_FORM_sec_offset: |
13392 | return "DW_FORM_sec_offset"; | |
13393 | case DW_FORM_exprloc: | |
13394 | return "DW_FORM_exprloc"; | |
13395 | case DW_FORM_flag_present: | |
13396 | return "DW_FORM_flag_present"; | |
55f1336d TT |
13397 | case DW_FORM_ref_sig8: |
13398 | return "DW_FORM_ref_sig8"; | |
c906108c SS |
13399 | default: |
13400 | return "DW_FORM_<unknown>"; | |
13401 | } | |
13402 | } | |
13403 | ||
13404 | /* Convert a DWARF stack opcode into its string name. */ | |
13405 | ||
9eae7c52 | 13406 | const char * |
b1bfef65 | 13407 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
13408 | { |
13409 | switch (op) | |
13410 | { | |
13411 | case DW_OP_addr: | |
13412 | return "DW_OP_addr"; | |
13413 | case DW_OP_deref: | |
13414 | return "DW_OP_deref"; | |
13415 | case DW_OP_const1u: | |
13416 | return "DW_OP_const1u"; | |
13417 | case DW_OP_const1s: | |
13418 | return "DW_OP_const1s"; | |
13419 | case DW_OP_const2u: | |
13420 | return "DW_OP_const2u"; | |
13421 | case DW_OP_const2s: | |
13422 | return "DW_OP_const2s"; | |
13423 | case DW_OP_const4u: | |
13424 | return "DW_OP_const4u"; | |
13425 | case DW_OP_const4s: | |
13426 | return "DW_OP_const4s"; | |
13427 | case DW_OP_const8u: | |
13428 | return "DW_OP_const8u"; | |
13429 | case DW_OP_const8s: | |
13430 | return "DW_OP_const8s"; | |
13431 | case DW_OP_constu: | |
13432 | return "DW_OP_constu"; | |
13433 | case DW_OP_consts: | |
13434 | return "DW_OP_consts"; | |
13435 | case DW_OP_dup: | |
13436 | return "DW_OP_dup"; | |
13437 | case DW_OP_drop: | |
13438 | return "DW_OP_drop"; | |
13439 | case DW_OP_over: | |
13440 | return "DW_OP_over"; | |
13441 | case DW_OP_pick: | |
13442 | return "DW_OP_pick"; | |
13443 | case DW_OP_swap: | |
13444 | return "DW_OP_swap"; | |
13445 | case DW_OP_rot: | |
13446 | return "DW_OP_rot"; | |
13447 | case DW_OP_xderef: | |
13448 | return "DW_OP_xderef"; | |
13449 | case DW_OP_abs: | |
13450 | return "DW_OP_abs"; | |
13451 | case DW_OP_and: | |
13452 | return "DW_OP_and"; | |
13453 | case DW_OP_div: | |
13454 | return "DW_OP_div"; | |
13455 | case DW_OP_minus: | |
13456 | return "DW_OP_minus"; | |
13457 | case DW_OP_mod: | |
13458 | return "DW_OP_mod"; | |
13459 | case DW_OP_mul: | |
13460 | return "DW_OP_mul"; | |
13461 | case DW_OP_neg: | |
13462 | return "DW_OP_neg"; | |
13463 | case DW_OP_not: | |
13464 | return "DW_OP_not"; | |
13465 | case DW_OP_or: | |
13466 | return "DW_OP_or"; | |
13467 | case DW_OP_plus: | |
13468 | return "DW_OP_plus"; | |
13469 | case DW_OP_plus_uconst: | |
13470 | return "DW_OP_plus_uconst"; | |
13471 | case DW_OP_shl: | |
13472 | return "DW_OP_shl"; | |
13473 | case DW_OP_shr: | |
13474 | return "DW_OP_shr"; | |
13475 | case DW_OP_shra: | |
13476 | return "DW_OP_shra"; | |
13477 | case DW_OP_xor: | |
13478 | return "DW_OP_xor"; | |
13479 | case DW_OP_bra: | |
13480 | return "DW_OP_bra"; | |
13481 | case DW_OP_eq: | |
13482 | return "DW_OP_eq"; | |
13483 | case DW_OP_ge: | |
13484 | return "DW_OP_ge"; | |
13485 | case DW_OP_gt: | |
13486 | return "DW_OP_gt"; | |
13487 | case DW_OP_le: | |
13488 | return "DW_OP_le"; | |
13489 | case DW_OP_lt: | |
13490 | return "DW_OP_lt"; | |
13491 | case DW_OP_ne: | |
13492 | return "DW_OP_ne"; | |
13493 | case DW_OP_skip: | |
13494 | return "DW_OP_skip"; | |
13495 | case DW_OP_lit0: | |
13496 | return "DW_OP_lit0"; | |
13497 | case DW_OP_lit1: | |
13498 | return "DW_OP_lit1"; | |
13499 | case DW_OP_lit2: | |
13500 | return "DW_OP_lit2"; | |
13501 | case DW_OP_lit3: | |
13502 | return "DW_OP_lit3"; | |
13503 | case DW_OP_lit4: | |
13504 | return "DW_OP_lit4"; | |
13505 | case DW_OP_lit5: | |
13506 | return "DW_OP_lit5"; | |
13507 | case DW_OP_lit6: | |
13508 | return "DW_OP_lit6"; | |
13509 | case DW_OP_lit7: | |
13510 | return "DW_OP_lit7"; | |
13511 | case DW_OP_lit8: | |
13512 | return "DW_OP_lit8"; | |
13513 | case DW_OP_lit9: | |
13514 | return "DW_OP_lit9"; | |
13515 | case DW_OP_lit10: | |
13516 | return "DW_OP_lit10"; | |
13517 | case DW_OP_lit11: | |
13518 | return "DW_OP_lit11"; | |
13519 | case DW_OP_lit12: | |
13520 | return "DW_OP_lit12"; | |
13521 | case DW_OP_lit13: | |
13522 | return "DW_OP_lit13"; | |
13523 | case DW_OP_lit14: | |
13524 | return "DW_OP_lit14"; | |
13525 | case DW_OP_lit15: | |
13526 | return "DW_OP_lit15"; | |
13527 | case DW_OP_lit16: | |
13528 | return "DW_OP_lit16"; | |
13529 | case DW_OP_lit17: | |
13530 | return "DW_OP_lit17"; | |
13531 | case DW_OP_lit18: | |
13532 | return "DW_OP_lit18"; | |
13533 | case DW_OP_lit19: | |
13534 | return "DW_OP_lit19"; | |
13535 | case DW_OP_lit20: | |
13536 | return "DW_OP_lit20"; | |
13537 | case DW_OP_lit21: | |
13538 | return "DW_OP_lit21"; | |
13539 | case DW_OP_lit22: | |
13540 | return "DW_OP_lit22"; | |
13541 | case DW_OP_lit23: | |
13542 | return "DW_OP_lit23"; | |
13543 | case DW_OP_lit24: | |
13544 | return "DW_OP_lit24"; | |
13545 | case DW_OP_lit25: | |
13546 | return "DW_OP_lit25"; | |
13547 | case DW_OP_lit26: | |
13548 | return "DW_OP_lit26"; | |
13549 | case DW_OP_lit27: | |
13550 | return "DW_OP_lit27"; | |
13551 | case DW_OP_lit28: | |
13552 | return "DW_OP_lit28"; | |
13553 | case DW_OP_lit29: | |
13554 | return "DW_OP_lit29"; | |
13555 | case DW_OP_lit30: | |
13556 | return "DW_OP_lit30"; | |
13557 | case DW_OP_lit31: | |
13558 | return "DW_OP_lit31"; | |
13559 | case DW_OP_reg0: | |
13560 | return "DW_OP_reg0"; | |
13561 | case DW_OP_reg1: | |
13562 | return "DW_OP_reg1"; | |
13563 | case DW_OP_reg2: | |
13564 | return "DW_OP_reg2"; | |
13565 | case DW_OP_reg3: | |
13566 | return "DW_OP_reg3"; | |
13567 | case DW_OP_reg4: | |
13568 | return "DW_OP_reg4"; | |
13569 | case DW_OP_reg5: | |
13570 | return "DW_OP_reg5"; | |
13571 | case DW_OP_reg6: | |
13572 | return "DW_OP_reg6"; | |
13573 | case DW_OP_reg7: | |
13574 | return "DW_OP_reg7"; | |
13575 | case DW_OP_reg8: | |
13576 | return "DW_OP_reg8"; | |
13577 | case DW_OP_reg9: | |
13578 | return "DW_OP_reg9"; | |
13579 | case DW_OP_reg10: | |
13580 | return "DW_OP_reg10"; | |
13581 | case DW_OP_reg11: | |
13582 | return "DW_OP_reg11"; | |
13583 | case DW_OP_reg12: | |
13584 | return "DW_OP_reg12"; | |
13585 | case DW_OP_reg13: | |
13586 | return "DW_OP_reg13"; | |
13587 | case DW_OP_reg14: | |
13588 | return "DW_OP_reg14"; | |
13589 | case DW_OP_reg15: | |
13590 | return "DW_OP_reg15"; | |
13591 | case DW_OP_reg16: | |
13592 | return "DW_OP_reg16"; | |
13593 | case DW_OP_reg17: | |
13594 | return "DW_OP_reg17"; | |
13595 | case DW_OP_reg18: | |
13596 | return "DW_OP_reg18"; | |
13597 | case DW_OP_reg19: | |
13598 | return "DW_OP_reg19"; | |
13599 | case DW_OP_reg20: | |
13600 | return "DW_OP_reg20"; | |
13601 | case DW_OP_reg21: | |
13602 | return "DW_OP_reg21"; | |
13603 | case DW_OP_reg22: | |
13604 | return "DW_OP_reg22"; | |
13605 | case DW_OP_reg23: | |
13606 | return "DW_OP_reg23"; | |
13607 | case DW_OP_reg24: | |
13608 | return "DW_OP_reg24"; | |
13609 | case DW_OP_reg25: | |
13610 | return "DW_OP_reg25"; | |
13611 | case DW_OP_reg26: | |
13612 | return "DW_OP_reg26"; | |
13613 | case DW_OP_reg27: | |
13614 | return "DW_OP_reg27"; | |
13615 | case DW_OP_reg28: | |
13616 | return "DW_OP_reg28"; | |
13617 | case DW_OP_reg29: | |
13618 | return "DW_OP_reg29"; | |
13619 | case DW_OP_reg30: | |
13620 | return "DW_OP_reg30"; | |
13621 | case DW_OP_reg31: | |
13622 | return "DW_OP_reg31"; | |
13623 | case DW_OP_breg0: | |
13624 | return "DW_OP_breg0"; | |
13625 | case DW_OP_breg1: | |
13626 | return "DW_OP_breg1"; | |
13627 | case DW_OP_breg2: | |
13628 | return "DW_OP_breg2"; | |
13629 | case DW_OP_breg3: | |
13630 | return "DW_OP_breg3"; | |
13631 | case DW_OP_breg4: | |
13632 | return "DW_OP_breg4"; | |
13633 | case DW_OP_breg5: | |
13634 | return "DW_OP_breg5"; | |
13635 | case DW_OP_breg6: | |
13636 | return "DW_OP_breg6"; | |
13637 | case DW_OP_breg7: | |
13638 | return "DW_OP_breg7"; | |
13639 | case DW_OP_breg8: | |
13640 | return "DW_OP_breg8"; | |
13641 | case DW_OP_breg9: | |
13642 | return "DW_OP_breg9"; | |
13643 | case DW_OP_breg10: | |
13644 | return "DW_OP_breg10"; | |
13645 | case DW_OP_breg11: | |
13646 | return "DW_OP_breg11"; | |
13647 | case DW_OP_breg12: | |
13648 | return "DW_OP_breg12"; | |
13649 | case DW_OP_breg13: | |
13650 | return "DW_OP_breg13"; | |
13651 | case DW_OP_breg14: | |
13652 | return "DW_OP_breg14"; | |
13653 | case DW_OP_breg15: | |
13654 | return "DW_OP_breg15"; | |
13655 | case DW_OP_breg16: | |
13656 | return "DW_OP_breg16"; | |
13657 | case DW_OP_breg17: | |
13658 | return "DW_OP_breg17"; | |
13659 | case DW_OP_breg18: | |
13660 | return "DW_OP_breg18"; | |
13661 | case DW_OP_breg19: | |
13662 | return "DW_OP_breg19"; | |
13663 | case DW_OP_breg20: | |
13664 | return "DW_OP_breg20"; | |
13665 | case DW_OP_breg21: | |
13666 | return "DW_OP_breg21"; | |
13667 | case DW_OP_breg22: | |
13668 | return "DW_OP_breg22"; | |
13669 | case DW_OP_breg23: | |
13670 | return "DW_OP_breg23"; | |
13671 | case DW_OP_breg24: | |
13672 | return "DW_OP_breg24"; | |
13673 | case DW_OP_breg25: | |
13674 | return "DW_OP_breg25"; | |
13675 | case DW_OP_breg26: | |
13676 | return "DW_OP_breg26"; | |
13677 | case DW_OP_breg27: | |
13678 | return "DW_OP_breg27"; | |
13679 | case DW_OP_breg28: | |
13680 | return "DW_OP_breg28"; | |
13681 | case DW_OP_breg29: | |
13682 | return "DW_OP_breg29"; | |
13683 | case DW_OP_breg30: | |
13684 | return "DW_OP_breg30"; | |
13685 | case DW_OP_breg31: | |
13686 | return "DW_OP_breg31"; | |
13687 | case DW_OP_regx: | |
13688 | return "DW_OP_regx"; | |
13689 | case DW_OP_fbreg: | |
13690 | return "DW_OP_fbreg"; | |
13691 | case DW_OP_bregx: | |
13692 | return "DW_OP_bregx"; | |
13693 | case DW_OP_piece: | |
13694 | return "DW_OP_piece"; | |
13695 | case DW_OP_deref_size: | |
13696 | return "DW_OP_deref_size"; | |
13697 | case DW_OP_xderef_size: | |
13698 | return "DW_OP_xderef_size"; | |
13699 | case DW_OP_nop: | |
13700 | return "DW_OP_nop"; | |
b7619582 | 13701 | /* DWARF 3 extensions. */ |
ed348acc EZ |
13702 | case DW_OP_push_object_address: |
13703 | return "DW_OP_push_object_address"; | |
13704 | case DW_OP_call2: | |
13705 | return "DW_OP_call2"; | |
13706 | case DW_OP_call4: | |
13707 | return "DW_OP_call4"; | |
13708 | case DW_OP_call_ref: | |
13709 | return "DW_OP_call_ref"; | |
b7619582 GF |
13710 | case DW_OP_form_tls_address: |
13711 | return "DW_OP_form_tls_address"; | |
13712 | case DW_OP_call_frame_cfa: | |
13713 | return "DW_OP_call_frame_cfa"; | |
13714 | case DW_OP_bit_piece: | |
13715 | return "DW_OP_bit_piece"; | |
9eae7c52 TT |
13716 | /* DWARF 4 extensions. */ |
13717 | case DW_OP_implicit_value: | |
13718 | return "DW_OP_implicit_value"; | |
13719 | case DW_OP_stack_value: | |
13720 | return "DW_OP_stack_value"; | |
13721 | /* GNU extensions. */ | |
ed348acc EZ |
13722 | case DW_OP_GNU_push_tls_address: |
13723 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
13724 | case DW_OP_GNU_uninit: |
13725 | return "DW_OP_GNU_uninit"; | |
8cf6f0b1 TT |
13726 | case DW_OP_GNU_implicit_pointer: |
13727 | return "DW_OP_GNU_implicit_pointer"; | |
8a9b8146 TT |
13728 | case DW_OP_GNU_entry_value: |
13729 | return "DW_OP_GNU_entry_value"; | |
13730 | case DW_OP_GNU_const_type: | |
13731 | return "DW_OP_GNU_const_type"; | |
13732 | case DW_OP_GNU_regval_type: | |
13733 | return "DW_OP_GNU_regval_type"; | |
13734 | case DW_OP_GNU_deref_type: | |
13735 | return "DW_OP_GNU_deref_type"; | |
13736 | case DW_OP_GNU_convert: | |
13737 | return "DW_OP_GNU_convert"; | |
13738 | case DW_OP_GNU_reinterpret: | |
13739 | return "DW_OP_GNU_reinterpret"; | |
c906108c | 13740 | default: |
b1bfef65 | 13741 | return NULL; |
c906108c SS |
13742 | } |
13743 | } | |
13744 | ||
13745 | static char * | |
fba45db2 | 13746 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
13747 | { |
13748 | if (mybool) | |
13749 | return "TRUE"; | |
13750 | else | |
13751 | return "FALSE"; | |
13752 | } | |
13753 | ||
13754 | /* Convert a DWARF type code into its string name. */ | |
13755 | ||
13756 | static char * | |
aa1ee363 | 13757 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
13758 | { |
13759 | switch (enc) | |
13760 | { | |
b7619582 GF |
13761 | case DW_ATE_void: |
13762 | return "DW_ATE_void"; | |
c906108c SS |
13763 | case DW_ATE_address: |
13764 | return "DW_ATE_address"; | |
13765 | case DW_ATE_boolean: | |
13766 | return "DW_ATE_boolean"; | |
13767 | case DW_ATE_complex_float: | |
13768 | return "DW_ATE_complex_float"; | |
13769 | case DW_ATE_float: | |
13770 | return "DW_ATE_float"; | |
13771 | case DW_ATE_signed: | |
13772 | return "DW_ATE_signed"; | |
13773 | case DW_ATE_signed_char: | |
13774 | return "DW_ATE_signed_char"; | |
13775 | case DW_ATE_unsigned: | |
13776 | return "DW_ATE_unsigned"; | |
13777 | case DW_ATE_unsigned_char: | |
13778 | return "DW_ATE_unsigned_char"; | |
b7619582 | 13779 | /* DWARF 3. */ |
d9fa45fe DC |
13780 | case DW_ATE_imaginary_float: |
13781 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
13782 | case DW_ATE_packed_decimal: |
13783 | return "DW_ATE_packed_decimal"; | |
13784 | case DW_ATE_numeric_string: | |
13785 | return "DW_ATE_numeric_string"; | |
13786 | case DW_ATE_edited: | |
13787 | return "DW_ATE_edited"; | |
13788 | case DW_ATE_signed_fixed: | |
13789 | return "DW_ATE_signed_fixed"; | |
13790 | case DW_ATE_unsigned_fixed: | |
13791 | return "DW_ATE_unsigned_fixed"; | |
13792 | case DW_ATE_decimal_float: | |
13793 | return "DW_ATE_decimal_float"; | |
75079b2b TT |
13794 | /* DWARF 4. */ |
13795 | case DW_ATE_UTF: | |
13796 | return "DW_ATE_UTF"; | |
b7619582 GF |
13797 | /* HP extensions. */ |
13798 | case DW_ATE_HP_float80: | |
13799 | return "DW_ATE_HP_float80"; | |
13800 | case DW_ATE_HP_complex_float80: | |
13801 | return "DW_ATE_HP_complex_float80"; | |
13802 | case DW_ATE_HP_float128: | |
13803 | return "DW_ATE_HP_float128"; | |
13804 | case DW_ATE_HP_complex_float128: | |
13805 | return "DW_ATE_HP_complex_float128"; | |
13806 | case DW_ATE_HP_floathpintel: | |
13807 | return "DW_ATE_HP_floathpintel"; | |
13808 | case DW_ATE_HP_imaginary_float80: | |
13809 | return "DW_ATE_HP_imaginary_float80"; | |
13810 | case DW_ATE_HP_imaginary_float128: | |
13811 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
13812 | default: |
13813 | return "DW_ATE_<unknown>"; | |
13814 | } | |
13815 | } | |
13816 | ||
0963b4bd | 13817 | /* Convert a DWARF call frame info operation to its string name. */ |
c906108c SS |
13818 | |
13819 | #if 0 | |
13820 | static char * | |
aa1ee363 | 13821 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
13822 | { |
13823 | switch (cfi_opc) | |
13824 | { | |
13825 | case DW_CFA_advance_loc: | |
13826 | return "DW_CFA_advance_loc"; | |
13827 | case DW_CFA_offset: | |
13828 | return "DW_CFA_offset"; | |
13829 | case DW_CFA_restore: | |
13830 | return "DW_CFA_restore"; | |
13831 | case DW_CFA_nop: | |
13832 | return "DW_CFA_nop"; | |
13833 | case DW_CFA_set_loc: | |
13834 | return "DW_CFA_set_loc"; | |
13835 | case DW_CFA_advance_loc1: | |
13836 | return "DW_CFA_advance_loc1"; | |
13837 | case DW_CFA_advance_loc2: | |
13838 | return "DW_CFA_advance_loc2"; | |
13839 | case DW_CFA_advance_loc4: | |
13840 | return "DW_CFA_advance_loc4"; | |
13841 | case DW_CFA_offset_extended: | |
13842 | return "DW_CFA_offset_extended"; | |
13843 | case DW_CFA_restore_extended: | |
13844 | return "DW_CFA_restore_extended"; | |
13845 | case DW_CFA_undefined: | |
13846 | return "DW_CFA_undefined"; | |
13847 | case DW_CFA_same_value: | |
13848 | return "DW_CFA_same_value"; | |
13849 | case DW_CFA_register: | |
13850 | return "DW_CFA_register"; | |
13851 | case DW_CFA_remember_state: | |
13852 | return "DW_CFA_remember_state"; | |
13853 | case DW_CFA_restore_state: | |
13854 | return "DW_CFA_restore_state"; | |
13855 | case DW_CFA_def_cfa: | |
13856 | return "DW_CFA_def_cfa"; | |
13857 | case DW_CFA_def_cfa_register: | |
13858 | return "DW_CFA_def_cfa_register"; | |
13859 | case DW_CFA_def_cfa_offset: | |
13860 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 13861 | /* DWARF 3. */ |
985cb1a3 JM |
13862 | case DW_CFA_def_cfa_expression: |
13863 | return "DW_CFA_def_cfa_expression"; | |
13864 | case DW_CFA_expression: | |
13865 | return "DW_CFA_expression"; | |
13866 | case DW_CFA_offset_extended_sf: | |
13867 | return "DW_CFA_offset_extended_sf"; | |
13868 | case DW_CFA_def_cfa_sf: | |
13869 | return "DW_CFA_def_cfa_sf"; | |
13870 | case DW_CFA_def_cfa_offset_sf: | |
13871 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
13872 | case DW_CFA_val_offset: |
13873 | return "DW_CFA_val_offset"; | |
13874 | case DW_CFA_val_offset_sf: | |
13875 | return "DW_CFA_val_offset_sf"; | |
13876 | case DW_CFA_val_expression: | |
13877 | return "DW_CFA_val_expression"; | |
13878 | /* SGI/MIPS specific. */ | |
c906108c SS |
13879 | case DW_CFA_MIPS_advance_loc8: |
13880 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 13881 | /* GNU extensions. */ |
985cb1a3 JM |
13882 | case DW_CFA_GNU_window_save: |
13883 | return "DW_CFA_GNU_window_save"; | |
13884 | case DW_CFA_GNU_args_size: | |
13885 | return "DW_CFA_GNU_args_size"; | |
13886 | case DW_CFA_GNU_negative_offset_extended: | |
13887 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
13888 | default: |
13889 | return "DW_CFA_<unknown>"; | |
13890 | } | |
13891 | } | |
13892 | #endif | |
13893 | ||
f9aca02d | 13894 | static void |
d97bc12b | 13895 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
13896 | { |
13897 | unsigned int i; | |
13898 | ||
d97bc12b DE |
13899 | print_spaces (indent, f); |
13900 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 13901 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
13902 | |
13903 | if (die->parent != NULL) | |
13904 | { | |
13905 | print_spaces (indent, f); | |
13906 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
13907 | die->parent->offset); | |
13908 | } | |
13909 | ||
13910 | print_spaces (indent, f); | |
13911 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 13912 | dwarf_bool_name (die->child != NULL)); |
c906108c | 13913 | |
d97bc12b DE |
13914 | print_spaces (indent, f); |
13915 | fprintf_unfiltered (f, " attributes:\n"); | |
13916 | ||
c906108c SS |
13917 | for (i = 0; i < die->num_attrs; ++i) |
13918 | { | |
d97bc12b DE |
13919 | print_spaces (indent, f); |
13920 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
13921 | dwarf_attr_name (die->attrs[i].name), |
13922 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 13923 | |
c906108c SS |
13924 | switch (die->attrs[i].form) |
13925 | { | |
13926 | case DW_FORM_ref_addr: | |
13927 | case DW_FORM_addr: | |
d97bc12b | 13928 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 13929 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
13930 | break; |
13931 | case DW_FORM_block2: | |
13932 | case DW_FORM_block4: | |
13933 | case DW_FORM_block: | |
13934 | case DW_FORM_block1: | |
3e43a32a MS |
13935 | fprintf_unfiltered (f, "block: size %d", |
13936 | DW_BLOCK (&die->attrs[i])->size); | |
c906108c | 13937 | break; |
2dc7f7b3 TT |
13938 | case DW_FORM_exprloc: |
13939 | fprintf_unfiltered (f, "expression: size %u", | |
13940 | DW_BLOCK (&die->attrs[i])->size); | |
13941 | break; | |
10b3939b DJ |
13942 | case DW_FORM_ref1: |
13943 | case DW_FORM_ref2: | |
13944 | case DW_FORM_ref4: | |
d97bc12b | 13945 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
13946 | (long) (DW_ADDR (&die->attrs[i]))); |
13947 | break; | |
c906108c SS |
13948 | case DW_FORM_data1: |
13949 | case DW_FORM_data2: | |
13950 | case DW_FORM_data4: | |
ce5d95e1 | 13951 | case DW_FORM_data8: |
c906108c SS |
13952 | case DW_FORM_udata: |
13953 | case DW_FORM_sdata: | |
43bbcdc2 PH |
13954 | fprintf_unfiltered (f, "constant: %s", |
13955 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 13956 | break; |
2dc7f7b3 TT |
13957 | case DW_FORM_sec_offset: |
13958 | fprintf_unfiltered (f, "section offset: %s", | |
13959 | pulongest (DW_UNSND (&die->attrs[i]))); | |
13960 | break; | |
55f1336d | 13961 | case DW_FORM_ref_sig8: |
348e048f DE |
13962 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
13963 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
b3c8eb43 | 13964 | DW_SIGNATURED_TYPE (&die->attrs[i])->per_cu.offset); |
348e048f DE |
13965 | else |
13966 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
13967 | break; | |
c906108c | 13968 | case DW_FORM_string: |
4bdf3d34 | 13969 | case DW_FORM_strp: |
8285870a | 13970 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 13971 | DW_STRING (&die->attrs[i]) |
8285870a JK |
13972 | ? DW_STRING (&die->attrs[i]) : "", |
13973 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
13974 | break; |
13975 | case DW_FORM_flag: | |
13976 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 13977 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 13978 | else |
d97bc12b | 13979 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 13980 | break; |
2dc7f7b3 TT |
13981 | case DW_FORM_flag_present: |
13982 | fprintf_unfiltered (f, "flag: TRUE"); | |
13983 | break; | |
a8329558 | 13984 | case DW_FORM_indirect: |
0963b4bd MS |
13985 | /* The reader will have reduced the indirect form to |
13986 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
13987 | fprintf_unfiltered (f, |
13988 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 13989 | break; |
c906108c | 13990 | default: |
d97bc12b | 13991 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 13992 | die->attrs[i].form); |
d97bc12b | 13993 | break; |
c906108c | 13994 | } |
d97bc12b | 13995 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
13996 | } |
13997 | } | |
13998 | ||
f9aca02d | 13999 | static void |
d97bc12b | 14000 | dump_die_for_error (struct die_info *die) |
c906108c | 14001 | { |
d97bc12b DE |
14002 | dump_die_shallow (gdb_stderr, 0, die); |
14003 | } | |
14004 | ||
14005 | static void | |
14006 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
14007 | { | |
14008 | int indent = level * 4; | |
14009 | ||
14010 | gdb_assert (die != NULL); | |
14011 | ||
14012 | if (level >= max_level) | |
14013 | return; | |
14014 | ||
14015 | dump_die_shallow (f, indent, die); | |
14016 | ||
14017 | if (die->child != NULL) | |
c906108c | 14018 | { |
d97bc12b DE |
14019 | print_spaces (indent, f); |
14020 | fprintf_unfiltered (f, " Children:"); | |
14021 | if (level + 1 < max_level) | |
14022 | { | |
14023 | fprintf_unfiltered (f, "\n"); | |
14024 | dump_die_1 (f, level + 1, max_level, die->child); | |
14025 | } | |
14026 | else | |
14027 | { | |
3e43a32a MS |
14028 | fprintf_unfiltered (f, |
14029 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
14030 | } |
14031 | } | |
14032 | ||
14033 | if (die->sibling != NULL && level > 0) | |
14034 | { | |
14035 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
14036 | } |
14037 | } | |
14038 | ||
d97bc12b DE |
14039 | /* This is called from the pdie macro in gdbinit.in. |
14040 | It's not static so gcc will keep a copy callable from gdb. */ | |
14041 | ||
14042 | void | |
14043 | dump_die (struct die_info *die, int max_level) | |
14044 | { | |
14045 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
14046 | } | |
14047 | ||
f9aca02d | 14048 | static void |
51545339 | 14049 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 14050 | { |
51545339 | 14051 | void **slot; |
c906108c | 14052 | |
51545339 DJ |
14053 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
14054 | ||
14055 | *slot = die; | |
c906108c SS |
14056 | } |
14057 | ||
93311388 DE |
14058 | static int |
14059 | is_ref_attr (struct attribute *attr) | |
c906108c | 14060 | { |
c906108c SS |
14061 | switch (attr->form) |
14062 | { | |
14063 | case DW_FORM_ref_addr: | |
c906108c SS |
14064 | case DW_FORM_ref1: |
14065 | case DW_FORM_ref2: | |
14066 | case DW_FORM_ref4: | |
613e1657 | 14067 | case DW_FORM_ref8: |
c906108c | 14068 | case DW_FORM_ref_udata: |
93311388 | 14069 | return 1; |
c906108c | 14070 | default: |
93311388 | 14071 | return 0; |
c906108c | 14072 | } |
93311388 DE |
14073 | } |
14074 | ||
14075 | static unsigned int | |
14076 | dwarf2_get_ref_die_offset (struct attribute *attr) | |
14077 | { | |
14078 | if (is_ref_attr (attr)) | |
14079 | return DW_ADDR (attr); | |
14080 | ||
14081 | complaint (&symfile_complaints, | |
14082 | _("unsupported die ref attribute form: '%s'"), | |
14083 | dwarf_form_name (attr->form)); | |
14084 | return 0; | |
c906108c SS |
14085 | } |
14086 | ||
43bbcdc2 PH |
14087 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
14088 | * the value held by the attribute is not constant. */ | |
a02abb62 | 14089 | |
43bbcdc2 | 14090 | static LONGEST |
a02abb62 JB |
14091 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
14092 | { | |
14093 | if (attr->form == DW_FORM_sdata) | |
14094 | return DW_SND (attr); | |
14095 | else if (attr->form == DW_FORM_udata | |
14096 | || attr->form == DW_FORM_data1 | |
14097 | || attr->form == DW_FORM_data2 | |
14098 | || attr->form == DW_FORM_data4 | |
14099 | || attr->form == DW_FORM_data8) | |
14100 | return DW_UNSND (attr); | |
14101 | else | |
14102 | { | |
3e43a32a MS |
14103 | complaint (&symfile_complaints, |
14104 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
14105 | dwarf_form_name (attr->form)); |
14106 | return default_value; | |
14107 | } | |
14108 | } | |
14109 | ||
03dd20cc | 14110 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
14111 | unit and add it to our queue. |
14112 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
14113 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 14114 | |
348e048f | 14115 | static int |
03dd20cc DJ |
14116 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
14117 | struct dwarf2_per_cu_data *per_cu) | |
14118 | { | |
98bfdba5 PA |
14119 | /* We may arrive here during partial symbol reading, if we need full |
14120 | DIEs to process an unusual case (e.g. template arguments). Do | |
14121 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
14122 | if (dwarf2_per_objfile->reading_partial_symbols) | |
14123 | { | |
14124 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
14125 | return 1; | |
14126 | return 0; | |
14127 | } | |
14128 | ||
03dd20cc DJ |
14129 | /* Mark the dependence relation so that we don't flush PER_CU |
14130 | too early. */ | |
14131 | dwarf2_add_dependence (this_cu, per_cu); | |
14132 | ||
14133 | /* If it's already on the queue, we have nothing to do. */ | |
14134 | if (per_cu->queued) | |
348e048f | 14135 | return 0; |
03dd20cc DJ |
14136 | |
14137 | /* If the compilation unit is already loaded, just mark it as | |
14138 | used. */ | |
14139 | if (per_cu->cu != NULL) | |
14140 | { | |
14141 | per_cu->cu->last_used = 0; | |
348e048f | 14142 | return 0; |
03dd20cc DJ |
14143 | } |
14144 | ||
14145 | /* Add it to the queue. */ | |
a0f42c21 | 14146 | queue_comp_unit (per_cu); |
348e048f DE |
14147 | |
14148 | return 1; | |
14149 | } | |
14150 | ||
14151 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
14152 | On entry *REF_CU is the CU of SRC_DIE. | |
14153 | On exit *REF_CU is the CU of the result. */ | |
14154 | ||
14155 | static struct die_info * | |
14156 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
14157 | struct dwarf2_cu **ref_cu) | |
14158 | { | |
14159 | struct die_info *die; | |
14160 | ||
14161 | if (is_ref_attr (attr)) | |
14162 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 14163 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
14164 | die = follow_die_sig (src_die, attr, ref_cu); |
14165 | else | |
14166 | { | |
14167 | dump_die_for_error (src_die); | |
14168 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
14169 | (*ref_cu)->objfile->name); | |
14170 | } | |
14171 | ||
14172 | return die; | |
03dd20cc DJ |
14173 | } |
14174 | ||
5c631832 | 14175 | /* Follow reference OFFSET. |
673bfd45 DE |
14176 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
14177 | On exit *REF_CU is the CU of the result. | |
14178 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 14179 | |
f9aca02d | 14180 | static struct die_info * |
5c631832 | 14181 | follow_die_offset (unsigned int offset, struct dwarf2_cu **ref_cu) |
c906108c | 14182 | { |
10b3939b | 14183 | struct die_info temp_die; |
f2f0e013 | 14184 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 14185 | |
348e048f DE |
14186 | gdb_assert (cu->per_cu != NULL); |
14187 | ||
98bfdba5 PA |
14188 | target_cu = cu; |
14189 | ||
b0df02fd | 14190 | if (cu->per_cu->debug_types_section) |
348e048f DE |
14191 | { |
14192 | /* .debug_types CUs cannot reference anything outside their CU. | |
14193 | If they need to, they have to reference a signatured type via | |
55f1336d | 14194 | DW_FORM_ref_sig8. */ |
348e048f | 14195 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 14196 | return NULL; |
348e048f DE |
14197 | } |
14198 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
14199 | { |
14200 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 14201 | |
45452591 | 14202 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
14203 | |
14204 | /* If necessary, add it to the queue and load its DIEs. */ | |
348e048f | 14205 | if (maybe_queue_comp_unit (cu, per_cu)) |
a0f42c21 | 14206 | load_full_comp_unit (per_cu); |
03dd20cc | 14207 | |
10b3939b DJ |
14208 | target_cu = per_cu->cu; |
14209 | } | |
98bfdba5 PA |
14210 | else if (cu->dies == NULL) |
14211 | { | |
14212 | /* We're loading full DIEs during partial symbol reading. */ | |
14213 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
a0f42c21 | 14214 | load_full_comp_unit (cu->per_cu); |
98bfdba5 | 14215 | } |
c906108c | 14216 | |
f2f0e013 | 14217 | *ref_cu = target_cu; |
51545339 | 14218 | temp_die.offset = offset; |
5c631832 JK |
14219 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset); |
14220 | } | |
10b3939b | 14221 | |
5c631832 JK |
14222 | /* Follow reference attribute ATTR of SRC_DIE. |
14223 | On entry *REF_CU is the CU of SRC_DIE. | |
14224 | On exit *REF_CU is the CU of the result. */ | |
14225 | ||
14226 | static struct die_info * | |
14227 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
14228 | struct dwarf2_cu **ref_cu) | |
14229 | { | |
14230 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
14231 | struct dwarf2_cu *cu = *ref_cu; | |
14232 | struct die_info *die; | |
14233 | ||
14234 | die = follow_die_offset (offset, ref_cu); | |
14235 | if (!die) | |
14236 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
14237 | "at 0x%x [in module %s]"), | |
14238 | offset, src_die->offset, cu->objfile->name); | |
348e048f | 14239 | |
5c631832 JK |
14240 | return die; |
14241 | } | |
14242 | ||
d83e736b JK |
14243 | /* Return DWARF block referenced by DW_AT_location of DIE at OFFSET at PER_CU. |
14244 | Returned value is intended for DW_OP_call*. Returned | |
14245 | dwarf2_locexpr_baton->data has lifetime of PER_CU->OBJFILE. */ | |
5c631832 JK |
14246 | |
14247 | struct dwarf2_locexpr_baton | |
14248 | dwarf2_fetch_die_location_block (unsigned int offset, | |
8cf6f0b1 TT |
14249 | struct dwarf2_per_cu_data *per_cu, |
14250 | CORE_ADDR (*get_frame_pc) (void *baton), | |
14251 | void *baton) | |
5c631832 | 14252 | { |
918dd910 | 14253 | struct dwarf2_cu *cu; |
5c631832 JK |
14254 | struct die_info *die; |
14255 | struct attribute *attr; | |
14256 | struct dwarf2_locexpr_baton retval; | |
14257 | ||
8cf6f0b1 TT |
14258 | dw2_setup (per_cu->objfile); |
14259 | ||
918dd910 JK |
14260 | if (per_cu->cu == NULL) |
14261 | load_cu (per_cu); | |
14262 | cu = per_cu->cu; | |
14263 | ||
5c631832 JK |
14264 | die = follow_die_offset (offset, &cu); |
14265 | if (!die) | |
14266 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
bb5ed363 | 14267 | offset, per_cu->objfile->name); |
5c631832 JK |
14268 | |
14269 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
14270 | if (!attr) | |
14271 | { | |
e103e986 JK |
14272 | /* DWARF: "If there is no such attribute, then there is no effect.". |
14273 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 14274 | |
e103e986 | 14275 | retval.data = NULL; |
5c631832 JK |
14276 | retval.size = 0; |
14277 | } | |
8cf6f0b1 TT |
14278 | else if (attr_form_is_section_offset (attr)) |
14279 | { | |
14280 | struct dwarf2_loclist_baton loclist_baton; | |
14281 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
14282 | size_t size; | |
14283 | ||
14284 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
14285 | ||
14286 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
14287 | &size, pc); | |
14288 | retval.size = size; | |
14289 | } | |
5c631832 JK |
14290 | else |
14291 | { | |
14292 | if (!attr_form_is_block (attr)) | |
14293 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
14294 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
bb5ed363 | 14295 | offset, per_cu->objfile->name); |
5c631832 JK |
14296 | |
14297 | retval.data = DW_BLOCK (attr)->data; | |
14298 | retval.size = DW_BLOCK (attr)->size; | |
14299 | } | |
14300 | retval.per_cu = cu->per_cu; | |
918dd910 | 14301 | |
918dd910 JK |
14302 | age_cached_comp_units (); |
14303 | ||
5c631832 | 14304 | return retval; |
348e048f DE |
14305 | } |
14306 | ||
8a9b8146 TT |
14307 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
14308 | PER_CU. */ | |
14309 | ||
14310 | struct type * | |
14311 | dwarf2_get_die_type (unsigned int die_offset, | |
14312 | struct dwarf2_per_cu_data *per_cu) | |
14313 | { | |
8a9b8146 | 14314 | dw2_setup (per_cu->objfile); |
9ff3b74f | 14315 | return get_die_type_at_offset (die_offset, per_cu); |
8a9b8146 TT |
14316 | } |
14317 | ||
348e048f DE |
14318 | /* Follow the signature attribute ATTR in SRC_DIE. |
14319 | On entry *REF_CU is the CU of SRC_DIE. | |
14320 | On exit *REF_CU is the CU of the result. */ | |
14321 | ||
14322 | static struct die_info * | |
14323 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
14324 | struct dwarf2_cu **ref_cu) | |
14325 | { | |
14326 | struct objfile *objfile = (*ref_cu)->objfile; | |
14327 | struct die_info temp_die; | |
14328 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
14329 | struct dwarf2_cu *sig_cu; | |
14330 | struct die_info *die; | |
14331 | ||
14332 | /* sig_type will be NULL if the signatured type is missing from | |
14333 | the debug info. */ | |
14334 | if (sig_type == NULL) | |
14335 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
14336 | "at 0x%x [in module %s]"), | |
14337 | src_die->offset, objfile->name); | |
14338 | ||
14339 | /* If necessary, add it to the queue and load its DIEs. */ | |
14340 | ||
14341 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu)) | |
a0f42c21 | 14342 | read_signatured_type (sig_type); |
348e048f DE |
14343 | |
14344 | gdb_assert (sig_type->per_cu.cu != NULL); | |
14345 | ||
14346 | sig_cu = sig_type->per_cu.cu; | |
14347 | temp_die.offset = sig_cu->header.offset + sig_type->type_offset; | |
14348 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, temp_die.offset); | |
14349 | if (die) | |
14350 | { | |
14351 | *ref_cu = sig_cu; | |
14352 | return die; | |
14353 | } | |
14354 | ||
3e43a32a MS |
14355 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
14356 | "from DIE at 0x%x [in module %s]"), | |
348e048f DE |
14357 | sig_type->type_offset, src_die->offset, objfile->name); |
14358 | } | |
14359 | ||
14360 | /* Given an offset of a signatured type, return its signatured_type. */ | |
14361 | ||
14362 | static struct signatured_type * | |
8b70b953 TT |
14363 | lookup_signatured_type_at_offset (struct objfile *objfile, |
14364 | struct dwarf2_section_info *section, | |
14365 | unsigned int offset) | |
348e048f | 14366 | { |
8b70b953 | 14367 | gdb_byte *info_ptr = section->buffer + offset; |
348e048f DE |
14368 | unsigned int length, initial_length_size; |
14369 | unsigned int sig_offset; | |
14370 | struct signatured_type find_entry, *type_sig; | |
14371 | ||
14372 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
14373 | sig_offset = (initial_length_size | |
14374 | + 2 /*version*/ | |
14375 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
14376 | + 1 /*address_size*/); | |
14377 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
14378 | type_sig = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
14379 | ||
14380 | /* This is only used to lookup previously recorded types. | |
14381 | If we didn't find it, it's our bug. */ | |
14382 | gdb_assert (type_sig != NULL); | |
b3c8eb43 | 14383 | gdb_assert (offset == type_sig->per_cu.offset); |
348e048f DE |
14384 | |
14385 | return type_sig; | |
14386 | } | |
14387 | ||
14388 | /* Read in signatured type at OFFSET and build its CU and die(s). */ | |
14389 | ||
14390 | static void | |
14391 | read_signatured_type_at_offset (struct objfile *objfile, | |
8b70b953 | 14392 | struct dwarf2_section_info *sect, |
348e048f DE |
14393 | unsigned int offset) |
14394 | { | |
14395 | struct signatured_type *type_sig; | |
14396 | ||
8b70b953 | 14397 | dwarf2_read_section (objfile, sect); |
be391dca | 14398 | |
348e048f DE |
14399 | /* We have the section offset, but we need the signature to do the |
14400 | hash table lookup. */ | |
8b70b953 | 14401 | type_sig = lookup_signatured_type_at_offset (objfile, sect, offset); |
348e048f DE |
14402 | |
14403 | gdb_assert (type_sig->per_cu.cu == NULL); | |
14404 | ||
a0f42c21 | 14405 | read_signatured_type (type_sig); |
348e048f DE |
14406 | |
14407 | gdb_assert (type_sig->per_cu.cu != NULL); | |
14408 | } | |
14409 | ||
14410 | /* Read in a signatured type and build its CU and DIEs. */ | |
14411 | ||
14412 | static void | |
a0f42c21 | 14413 | read_signatured_type (struct signatured_type *type_sig) |
348e048f | 14414 | { |
a0f42c21 | 14415 | struct objfile *objfile = type_sig->per_cu.objfile; |
1fd400ff | 14416 | gdb_byte *types_ptr; |
348e048f DE |
14417 | struct die_reader_specs reader_specs; |
14418 | struct dwarf2_cu *cu; | |
14419 | ULONGEST signature; | |
14420 | struct cleanup *back_to, *free_cu_cleanup; | |
b0df02fd | 14421 | struct dwarf2_section_info *section = type_sig->per_cu.debug_types_section; |
348e048f | 14422 | |
8b70b953 TT |
14423 | dwarf2_read_section (objfile, section); |
14424 | types_ptr = section->buffer + type_sig->per_cu.offset; | |
1fd400ff | 14425 | |
348e048f DE |
14426 | gdb_assert (type_sig->per_cu.cu == NULL); |
14427 | ||
9816fde3 JK |
14428 | cu = xmalloc (sizeof (*cu)); |
14429 | init_one_comp_unit (cu, objfile); | |
14430 | ||
348e048f DE |
14431 | type_sig->per_cu.cu = cu; |
14432 | cu->per_cu = &type_sig->per_cu; | |
14433 | ||
14434 | /* If an error occurs while loading, release our storage. */ | |
68dc6402 | 14435 | free_cu_cleanup = make_cleanup (free_heap_comp_unit, cu); |
348e048f | 14436 | |
8b70b953 | 14437 | types_ptr = read_type_comp_unit_head (&cu->header, section, &signature, |
348e048f DE |
14438 | types_ptr, objfile->obfd); |
14439 | gdb_assert (signature == type_sig->signature); | |
14440 | ||
14441 | cu->die_hash | |
14442 | = htab_create_alloc_ex (cu->header.length / 12, | |
14443 | die_hash, | |
14444 | die_eq, | |
14445 | NULL, | |
14446 | &cu->comp_unit_obstack, | |
14447 | hashtab_obstack_allocate, | |
14448 | dummy_obstack_deallocate); | |
14449 | ||
a0f42c21 | 14450 | dwarf2_read_abbrevs (objfile->obfd, cu); |
348e048f DE |
14451 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); |
14452 | ||
14453 | init_cu_die_reader (&reader_specs, cu); | |
14454 | ||
14455 | cu->dies = read_die_and_children (&reader_specs, types_ptr, &types_ptr, | |
14456 | NULL /*parent*/); | |
14457 | ||
14458 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 14459 | all CUs needed for references have been loaded yet, and symbol |
348e048f DE |
14460 | table processing isn't initialized. But we have to set the CU language, |
14461 | or we won't be able to build types correctly. */ | |
9816fde3 | 14462 | prepare_one_comp_unit (cu, cu->dies); |
348e048f DE |
14463 | |
14464 | do_cleanups (back_to); | |
14465 | ||
14466 | /* We've successfully allocated this compilation unit. Let our caller | |
14467 | clean it up when finished with it. */ | |
14468 | discard_cleanups (free_cu_cleanup); | |
14469 | ||
14470 | type_sig->per_cu.cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
14471 | dwarf2_per_objfile->read_in_chain = &type_sig->per_cu; | |
c906108c SS |
14472 | } |
14473 | ||
c906108c SS |
14474 | /* Decode simple location descriptions. |
14475 | Given a pointer to a dwarf block that defines a location, compute | |
14476 | the location and return the value. | |
14477 | ||
4cecd739 DJ |
14478 | NOTE drow/2003-11-18: This function is called in two situations |
14479 | now: for the address of static or global variables (partial symbols | |
14480 | only) and for offsets into structures which are expected to be | |
14481 | (more or less) constant. The partial symbol case should go away, | |
14482 | and only the constant case should remain. That will let this | |
14483 | function complain more accurately. A few special modes are allowed | |
14484 | without complaint for global variables (for instance, global | |
14485 | register values and thread-local values). | |
c906108c SS |
14486 | |
14487 | A location description containing no operations indicates that the | |
4cecd739 | 14488 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
14489 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
14490 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
14491 | complaint. |
14492 | ||
14493 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
14494 | |
14495 | static CORE_ADDR | |
e7c27a73 | 14496 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 14497 | { |
e7c27a73 | 14498 | struct objfile *objfile = cu->objfile; |
21ae7a4d JK |
14499 | int i; |
14500 | int size = blk->size; | |
14501 | gdb_byte *data = blk->data; | |
14502 | CORE_ADDR stack[64]; | |
14503 | int stacki; | |
14504 | unsigned int bytes_read, unsnd; | |
14505 | gdb_byte op; | |
c906108c | 14506 | |
21ae7a4d JK |
14507 | i = 0; |
14508 | stacki = 0; | |
14509 | stack[stacki] = 0; | |
14510 | stack[++stacki] = 0; | |
14511 | ||
14512 | while (i < size) | |
14513 | { | |
14514 | op = data[i++]; | |
14515 | switch (op) | |
14516 | { | |
14517 | case DW_OP_lit0: | |
14518 | case DW_OP_lit1: | |
14519 | case DW_OP_lit2: | |
14520 | case DW_OP_lit3: | |
14521 | case DW_OP_lit4: | |
14522 | case DW_OP_lit5: | |
14523 | case DW_OP_lit6: | |
14524 | case DW_OP_lit7: | |
14525 | case DW_OP_lit8: | |
14526 | case DW_OP_lit9: | |
14527 | case DW_OP_lit10: | |
14528 | case DW_OP_lit11: | |
14529 | case DW_OP_lit12: | |
14530 | case DW_OP_lit13: | |
14531 | case DW_OP_lit14: | |
14532 | case DW_OP_lit15: | |
14533 | case DW_OP_lit16: | |
14534 | case DW_OP_lit17: | |
14535 | case DW_OP_lit18: | |
14536 | case DW_OP_lit19: | |
14537 | case DW_OP_lit20: | |
14538 | case DW_OP_lit21: | |
14539 | case DW_OP_lit22: | |
14540 | case DW_OP_lit23: | |
14541 | case DW_OP_lit24: | |
14542 | case DW_OP_lit25: | |
14543 | case DW_OP_lit26: | |
14544 | case DW_OP_lit27: | |
14545 | case DW_OP_lit28: | |
14546 | case DW_OP_lit29: | |
14547 | case DW_OP_lit30: | |
14548 | case DW_OP_lit31: | |
14549 | stack[++stacki] = op - DW_OP_lit0; | |
14550 | break; | |
f1bea926 | 14551 | |
21ae7a4d JK |
14552 | case DW_OP_reg0: |
14553 | case DW_OP_reg1: | |
14554 | case DW_OP_reg2: | |
14555 | case DW_OP_reg3: | |
14556 | case DW_OP_reg4: | |
14557 | case DW_OP_reg5: | |
14558 | case DW_OP_reg6: | |
14559 | case DW_OP_reg7: | |
14560 | case DW_OP_reg8: | |
14561 | case DW_OP_reg9: | |
14562 | case DW_OP_reg10: | |
14563 | case DW_OP_reg11: | |
14564 | case DW_OP_reg12: | |
14565 | case DW_OP_reg13: | |
14566 | case DW_OP_reg14: | |
14567 | case DW_OP_reg15: | |
14568 | case DW_OP_reg16: | |
14569 | case DW_OP_reg17: | |
14570 | case DW_OP_reg18: | |
14571 | case DW_OP_reg19: | |
14572 | case DW_OP_reg20: | |
14573 | case DW_OP_reg21: | |
14574 | case DW_OP_reg22: | |
14575 | case DW_OP_reg23: | |
14576 | case DW_OP_reg24: | |
14577 | case DW_OP_reg25: | |
14578 | case DW_OP_reg26: | |
14579 | case DW_OP_reg27: | |
14580 | case DW_OP_reg28: | |
14581 | case DW_OP_reg29: | |
14582 | case DW_OP_reg30: | |
14583 | case DW_OP_reg31: | |
14584 | stack[++stacki] = op - DW_OP_reg0; | |
14585 | if (i < size) | |
14586 | dwarf2_complex_location_expr_complaint (); | |
14587 | break; | |
c906108c | 14588 | |
21ae7a4d JK |
14589 | case DW_OP_regx: |
14590 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
14591 | i += bytes_read; | |
14592 | stack[++stacki] = unsnd; | |
14593 | if (i < size) | |
14594 | dwarf2_complex_location_expr_complaint (); | |
14595 | break; | |
c906108c | 14596 | |
21ae7a4d JK |
14597 | case DW_OP_addr: |
14598 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
14599 | cu, &bytes_read); | |
14600 | i += bytes_read; | |
14601 | break; | |
d53d4ac5 | 14602 | |
21ae7a4d JK |
14603 | case DW_OP_const1u: |
14604 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
14605 | i += 1; | |
14606 | break; | |
14607 | ||
14608 | case DW_OP_const1s: | |
14609 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
14610 | i += 1; | |
14611 | break; | |
14612 | ||
14613 | case DW_OP_const2u: | |
14614 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
14615 | i += 2; | |
14616 | break; | |
14617 | ||
14618 | case DW_OP_const2s: | |
14619 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
14620 | i += 2; | |
14621 | break; | |
d53d4ac5 | 14622 | |
21ae7a4d JK |
14623 | case DW_OP_const4u: |
14624 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
14625 | i += 4; | |
14626 | break; | |
14627 | ||
14628 | case DW_OP_const4s: | |
14629 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
14630 | i += 4; | |
14631 | break; | |
14632 | ||
585861ea JK |
14633 | case DW_OP_const8u: |
14634 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
14635 | i += 8; | |
14636 | break; | |
14637 | ||
21ae7a4d JK |
14638 | case DW_OP_constu: |
14639 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
14640 | &bytes_read); | |
14641 | i += bytes_read; | |
14642 | break; | |
14643 | ||
14644 | case DW_OP_consts: | |
14645 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
14646 | i += bytes_read; | |
14647 | break; | |
14648 | ||
14649 | case DW_OP_dup: | |
14650 | stack[stacki + 1] = stack[stacki]; | |
14651 | stacki++; | |
14652 | break; | |
14653 | ||
14654 | case DW_OP_plus: | |
14655 | stack[stacki - 1] += stack[stacki]; | |
14656 | stacki--; | |
14657 | break; | |
14658 | ||
14659 | case DW_OP_plus_uconst: | |
14660 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
14661 | &bytes_read); | |
14662 | i += bytes_read; | |
14663 | break; | |
14664 | ||
14665 | case DW_OP_minus: | |
14666 | stack[stacki - 1] -= stack[stacki]; | |
14667 | stacki--; | |
14668 | break; | |
14669 | ||
14670 | case DW_OP_deref: | |
14671 | /* If we're not the last op, then we definitely can't encode | |
14672 | this using GDB's address_class enum. This is valid for partial | |
14673 | global symbols, although the variable's address will be bogus | |
14674 | in the psymtab. */ | |
14675 | if (i < size) | |
14676 | dwarf2_complex_location_expr_complaint (); | |
14677 | break; | |
14678 | ||
14679 | case DW_OP_GNU_push_tls_address: | |
14680 | /* The top of the stack has the offset from the beginning | |
14681 | of the thread control block at which the variable is located. */ | |
14682 | /* Nothing should follow this operator, so the top of stack would | |
14683 | be returned. */ | |
14684 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
14685 | address will be bogus in the psymtab. Make it always at least |
14686 | non-zero to not look as a variable garbage collected by linker | |
14687 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
14688 | if (i < size) |
14689 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 14690 | stack[stacki]++; |
21ae7a4d JK |
14691 | break; |
14692 | ||
14693 | case DW_OP_GNU_uninit: | |
14694 | break; | |
14695 | ||
14696 | default: | |
14697 | { | |
14698 | const char *name = dwarf_stack_op_name (op); | |
14699 | ||
14700 | if (name) | |
14701 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
14702 | name); | |
14703 | else | |
14704 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
14705 | op); | |
14706 | } | |
14707 | ||
14708 | return (stack[stacki]); | |
d53d4ac5 | 14709 | } |
3c6e0cb3 | 14710 | |
21ae7a4d JK |
14711 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
14712 | outside of the allocated space. Also enforce minimum>0. */ | |
14713 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
14714 | { | |
14715 | complaint (&symfile_complaints, | |
14716 | _("location description stack overflow")); | |
14717 | return 0; | |
14718 | } | |
14719 | ||
14720 | if (stacki <= 0) | |
14721 | { | |
14722 | complaint (&symfile_complaints, | |
14723 | _("location description stack underflow")); | |
14724 | return 0; | |
14725 | } | |
14726 | } | |
14727 | return (stack[stacki]); | |
c906108c SS |
14728 | } |
14729 | ||
14730 | /* memory allocation interface */ | |
14731 | ||
c906108c | 14732 | static struct dwarf_block * |
7b5a2f43 | 14733 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
14734 | { |
14735 | struct dwarf_block *blk; | |
14736 | ||
14737 | blk = (struct dwarf_block *) | |
7b5a2f43 | 14738 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
14739 | return (blk); |
14740 | } | |
14741 | ||
14742 | static struct abbrev_info * | |
f3dd6933 | 14743 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
14744 | { |
14745 | struct abbrev_info *abbrev; | |
14746 | ||
f3dd6933 DJ |
14747 | abbrev = (struct abbrev_info *) |
14748 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
14749 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
14750 | return (abbrev); | |
14751 | } | |
14752 | ||
14753 | static struct die_info * | |
b60c80d6 | 14754 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
14755 | { |
14756 | struct die_info *die; | |
b60c80d6 DJ |
14757 | size_t size = sizeof (struct die_info); |
14758 | ||
14759 | if (num_attrs > 1) | |
14760 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 14761 | |
b60c80d6 | 14762 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
14763 | memset (die, 0, sizeof (struct die_info)); |
14764 | return (die); | |
14765 | } | |
2e276125 JB |
14766 | |
14767 | \f | |
14768 | /* Macro support. */ | |
14769 | ||
2e276125 JB |
14770 | /* Return the full name of file number I in *LH's file name table. |
14771 | Use COMP_DIR as the name of the current directory of the | |
14772 | compilation. The result is allocated using xmalloc; the caller is | |
14773 | responsible for freeing it. */ | |
14774 | static char * | |
14775 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
14776 | { | |
6a83a1e6 EZ |
14777 | /* Is the file number a valid index into the line header's file name |
14778 | table? Remember that file numbers start with one, not zero. */ | |
14779 | if (1 <= file && file <= lh->num_file_names) | |
14780 | { | |
14781 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 14782 | |
6a83a1e6 EZ |
14783 | if (IS_ABSOLUTE_PATH (fe->name)) |
14784 | return xstrdup (fe->name); | |
14785 | else | |
14786 | { | |
14787 | const char *dir; | |
14788 | int dir_len; | |
14789 | char *full_name; | |
14790 | ||
14791 | if (fe->dir_index) | |
14792 | dir = lh->include_dirs[fe->dir_index - 1]; | |
14793 | else | |
14794 | dir = comp_dir; | |
14795 | ||
14796 | if (dir) | |
14797 | { | |
14798 | dir_len = strlen (dir); | |
14799 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
14800 | strcpy (full_name, dir); | |
14801 | full_name[dir_len] = '/'; | |
14802 | strcpy (full_name + dir_len + 1, fe->name); | |
14803 | return full_name; | |
14804 | } | |
14805 | else | |
14806 | return xstrdup (fe->name); | |
14807 | } | |
14808 | } | |
2e276125 JB |
14809 | else |
14810 | { | |
6a83a1e6 EZ |
14811 | /* The compiler produced a bogus file number. We can at least |
14812 | record the macro definitions made in the file, even if we | |
14813 | won't be able to find the file by name. */ | |
14814 | char fake_name[80]; | |
9a619af0 | 14815 | |
6a83a1e6 | 14816 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 14817 | |
6e70227d | 14818 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
14819 | _("bad file number in macro information (%d)"), |
14820 | file); | |
2e276125 | 14821 | |
6a83a1e6 | 14822 | return xstrdup (fake_name); |
2e276125 JB |
14823 | } |
14824 | } | |
14825 | ||
14826 | ||
14827 | static struct macro_source_file * | |
14828 | macro_start_file (int file, int line, | |
14829 | struct macro_source_file *current_file, | |
14830 | const char *comp_dir, | |
14831 | struct line_header *lh, struct objfile *objfile) | |
14832 | { | |
14833 | /* The full name of this source file. */ | |
14834 | char *full_name = file_full_name (file, lh, comp_dir); | |
14835 | ||
14836 | /* We don't create a macro table for this compilation unit | |
14837 | at all until we actually get a filename. */ | |
14838 | if (! pending_macros) | |
4a146b47 | 14839 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 14840 | objfile->macro_cache); |
2e276125 JB |
14841 | |
14842 | if (! current_file) | |
14843 | /* If we have no current file, then this must be the start_file | |
14844 | directive for the compilation unit's main source file. */ | |
14845 | current_file = macro_set_main (pending_macros, full_name); | |
14846 | else | |
14847 | current_file = macro_include (current_file, line, full_name); | |
14848 | ||
14849 | xfree (full_name); | |
6e70227d | 14850 | |
2e276125 JB |
14851 | return current_file; |
14852 | } | |
14853 | ||
14854 | ||
14855 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
14856 | followed by a null byte. */ | |
14857 | static char * | |
14858 | copy_string (const char *buf, int len) | |
14859 | { | |
14860 | char *s = xmalloc (len + 1); | |
9a619af0 | 14861 | |
2e276125 JB |
14862 | memcpy (s, buf, len); |
14863 | s[len] = '\0'; | |
2e276125 JB |
14864 | return s; |
14865 | } | |
14866 | ||
14867 | ||
14868 | static const char * | |
14869 | consume_improper_spaces (const char *p, const char *body) | |
14870 | { | |
14871 | if (*p == ' ') | |
14872 | { | |
4d3c2250 | 14873 | complaint (&symfile_complaints, |
3e43a32a MS |
14874 | _("macro definition contains spaces " |
14875 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 14876 | body); |
2e276125 JB |
14877 | |
14878 | while (*p == ' ') | |
14879 | p++; | |
14880 | } | |
14881 | ||
14882 | return p; | |
14883 | } | |
14884 | ||
14885 | ||
14886 | static void | |
14887 | parse_macro_definition (struct macro_source_file *file, int line, | |
14888 | const char *body) | |
14889 | { | |
14890 | const char *p; | |
14891 | ||
14892 | /* The body string takes one of two forms. For object-like macro | |
14893 | definitions, it should be: | |
14894 | ||
14895 | <macro name> " " <definition> | |
14896 | ||
14897 | For function-like macro definitions, it should be: | |
14898 | ||
14899 | <macro name> "() " <definition> | |
14900 | or | |
14901 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
14902 | ||
14903 | Spaces may appear only where explicitly indicated, and in the | |
14904 | <definition>. | |
14905 | ||
14906 | The Dwarf 2 spec says that an object-like macro's name is always | |
14907 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 14908 | the space when the macro's definition is the empty string. |
2e276125 JB |
14909 | |
14910 | The Dwarf 2 spec says that there should be no spaces between the | |
14911 | formal arguments in a function-like macro's formal argument list, | |
14912 | but versions of GCC around March 2002 include spaces after the | |
14913 | commas. */ | |
14914 | ||
14915 | ||
14916 | /* Find the extent of the macro name. The macro name is terminated | |
14917 | by either a space or null character (for an object-like macro) or | |
14918 | an opening paren (for a function-like macro). */ | |
14919 | for (p = body; *p; p++) | |
14920 | if (*p == ' ' || *p == '(') | |
14921 | break; | |
14922 | ||
14923 | if (*p == ' ' || *p == '\0') | |
14924 | { | |
14925 | /* It's an object-like macro. */ | |
14926 | int name_len = p - body; | |
14927 | char *name = copy_string (body, name_len); | |
14928 | const char *replacement; | |
14929 | ||
14930 | if (*p == ' ') | |
14931 | replacement = body + name_len + 1; | |
14932 | else | |
14933 | { | |
4d3c2250 | 14934 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14935 | replacement = body + name_len; |
14936 | } | |
6e70227d | 14937 | |
2e276125 JB |
14938 | macro_define_object (file, line, name, replacement); |
14939 | ||
14940 | xfree (name); | |
14941 | } | |
14942 | else if (*p == '(') | |
14943 | { | |
14944 | /* It's a function-like macro. */ | |
14945 | char *name = copy_string (body, p - body); | |
14946 | int argc = 0; | |
14947 | int argv_size = 1; | |
14948 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
14949 | ||
14950 | p++; | |
14951 | ||
14952 | p = consume_improper_spaces (p, body); | |
14953 | ||
14954 | /* Parse the formal argument list. */ | |
14955 | while (*p && *p != ')') | |
14956 | { | |
14957 | /* Find the extent of the current argument name. */ | |
14958 | const char *arg_start = p; | |
14959 | ||
14960 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
14961 | p++; | |
14962 | ||
14963 | if (! *p || p == arg_start) | |
4d3c2250 | 14964 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14965 | else |
14966 | { | |
14967 | /* Make sure argv has room for the new argument. */ | |
14968 | if (argc >= argv_size) | |
14969 | { | |
14970 | argv_size *= 2; | |
14971 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
14972 | } | |
14973 | ||
14974 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
14975 | } | |
14976 | ||
14977 | p = consume_improper_spaces (p, body); | |
14978 | ||
14979 | /* Consume the comma, if present. */ | |
14980 | if (*p == ',') | |
14981 | { | |
14982 | p++; | |
14983 | ||
14984 | p = consume_improper_spaces (p, body); | |
14985 | } | |
14986 | } | |
14987 | ||
14988 | if (*p == ')') | |
14989 | { | |
14990 | p++; | |
14991 | ||
14992 | if (*p == ' ') | |
14993 | /* Perfectly formed definition, no complaints. */ | |
14994 | macro_define_function (file, line, name, | |
6e70227d | 14995 | argc, (const char **) argv, |
2e276125 JB |
14996 | p + 1); |
14997 | else if (*p == '\0') | |
14998 | { | |
14999 | /* Complain, but do define it. */ | |
4d3c2250 | 15000 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 15001 | macro_define_function (file, line, name, |
6e70227d | 15002 | argc, (const char **) argv, |
2e276125 JB |
15003 | p); |
15004 | } | |
15005 | else | |
15006 | /* Just complain. */ | |
4d3c2250 | 15007 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15008 | } |
15009 | else | |
15010 | /* Just complain. */ | |
4d3c2250 | 15011 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15012 | |
15013 | xfree (name); | |
15014 | { | |
15015 | int i; | |
15016 | ||
15017 | for (i = 0; i < argc; i++) | |
15018 | xfree (argv[i]); | |
15019 | } | |
15020 | xfree (argv); | |
15021 | } | |
15022 | else | |
4d3c2250 | 15023 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
15024 | } |
15025 | ||
cf2c3c16 TT |
15026 | /* Skip some bytes from BYTES according to the form given in FORM. |
15027 | Returns the new pointer. */ | |
2e276125 | 15028 | |
cf2c3c16 TT |
15029 | static gdb_byte * |
15030 | skip_form_bytes (bfd *abfd, gdb_byte *bytes, | |
15031 | enum dwarf_form form, | |
15032 | unsigned int offset_size, | |
15033 | struct dwarf2_section_info *section) | |
2e276125 | 15034 | { |
cf2c3c16 | 15035 | unsigned int bytes_read; |
2e276125 | 15036 | |
cf2c3c16 | 15037 | switch (form) |
2e276125 | 15038 | { |
cf2c3c16 TT |
15039 | case DW_FORM_data1: |
15040 | case DW_FORM_flag: | |
15041 | ++bytes; | |
15042 | break; | |
15043 | ||
15044 | case DW_FORM_data2: | |
15045 | bytes += 2; | |
15046 | break; | |
15047 | ||
15048 | case DW_FORM_data4: | |
15049 | bytes += 4; | |
15050 | break; | |
15051 | ||
15052 | case DW_FORM_data8: | |
15053 | bytes += 8; | |
15054 | break; | |
15055 | ||
15056 | case DW_FORM_string: | |
15057 | read_direct_string (abfd, bytes, &bytes_read); | |
15058 | bytes += bytes_read; | |
15059 | break; | |
15060 | ||
15061 | case DW_FORM_sec_offset: | |
15062 | case DW_FORM_strp: | |
15063 | bytes += offset_size; | |
15064 | break; | |
15065 | ||
15066 | case DW_FORM_block: | |
15067 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
15068 | bytes += bytes_read; | |
15069 | break; | |
15070 | ||
15071 | case DW_FORM_block1: | |
15072 | bytes += 1 + read_1_byte (abfd, bytes); | |
15073 | break; | |
15074 | case DW_FORM_block2: | |
15075 | bytes += 2 + read_2_bytes (abfd, bytes); | |
15076 | break; | |
15077 | case DW_FORM_block4: | |
15078 | bytes += 4 + read_4_bytes (abfd, bytes); | |
15079 | break; | |
15080 | ||
15081 | case DW_FORM_sdata: | |
15082 | case DW_FORM_udata: | |
15083 | bytes = skip_leb128 (abfd, bytes); | |
15084 | break; | |
15085 | ||
15086 | default: | |
15087 | { | |
15088 | complain: | |
15089 | complaint (&symfile_complaints, | |
15090 | _("invalid form 0x%x in `%s'"), | |
15091 | form, | |
15092 | section->asection->name); | |
15093 | return NULL; | |
15094 | } | |
2e276125 JB |
15095 | } |
15096 | ||
cf2c3c16 TT |
15097 | return bytes; |
15098 | } | |
757a13d0 | 15099 | |
cf2c3c16 TT |
15100 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
15101 | opcode. Returns an updated pointer to the macro data buffer; or, | |
15102 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 15103 | |
cf2c3c16 TT |
15104 | static gdb_byte * |
15105 | skip_unknown_opcode (unsigned int opcode, | |
15106 | gdb_byte **opcode_definitions, | |
15107 | gdb_byte *mac_ptr, | |
15108 | bfd *abfd, | |
15109 | unsigned int offset_size, | |
15110 | struct dwarf2_section_info *section) | |
15111 | { | |
15112 | unsigned int bytes_read, i; | |
15113 | unsigned long arg; | |
15114 | gdb_byte *defn; | |
2e276125 | 15115 | |
cf2c3c16 | 15116 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 15117 | { |
cf2c3c16 TT |
15118 | complaint (&symfile_complaints, |
15119 | _("unrecognized DW_MACFINO opcode 0x%x"), | |
15120 | opcode); | |
15121 | return NULL; | |
15122 | } | |
2e276125 | 15123 | |
cf2c3c16 TT |
15124 | defn = opcode_definitions[opcode]; |
15125 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
15126 | defn += bytes_read; | |
2e276125 | 15127 | |
cf2c3c16 TT |
15128 | for (i = 0; i < arg; ++i) |
15129 | { | |
15130 | mac_ptr = skip_form_bytes (abfd, mac_ptr, defn[i], offset_size, section); | |
15131 | if (mac_ptr == NULL) | |
15132 | { | |
15133 | /* skip_form_bytes already issued the complaint. */ | |
15134 | return NULL; | |
15135 | } | |
15136 | } | |
757a13d0 | 15137 | |
cf2c3c16 TT |
15138 | return mac_ptr; |
15139 | } | |
757a13d0 | 15140 | |
cf2c3c16 TT |
15141 | /* A helper function which parses the header of a macro section. |
15142 | If the macro section is the extended (for now called "GNU") type, | |
15143 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
15144 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 15145 | |
cf2c3c16 TT |
15146 | static gdb_byte * |
15147 | dwarf_parse_macro_header (gdb_byte **opcode_definitions, | |
15148 | bfd *abfd, | |
15149 | gdb_byte *mac_ptr, | |
15150 | unsigned int *offset_size, | |
15151 | int section_is_gnu) | |
15152 | { | |
15153 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 15154 | |
cf2c3c16 TT |
15155 | if (section_is_gnu) |
15156 | { | |
15157 | unsigned int version, flags; | |
757a13d0 | 15158 | |
cf2c3c16 TT |
15159 | version = read_2_bytes (abfd, mac_ptr); |
15160 | if (version != 4) | |
15161 | { | |
15162 | complaint (&symfile_complaints, | |
15163 | _("unrecognized version `%d' in .debug_macro section"), | |
15164 | version); | |
15165 | return NULL; | |
15166 | } | |
15167 | mac_ptr += 2; | |
757a13d0 | 15168 | |
cf2c3c16 TT |
15169 | flags = read_1_byte (abfd, mac_ptr); |
15170 | ++mac_ptr; | |
15171 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 15172 | |
cf2c3c16 TT |
15173 | if ((flags & 2) != 0) |
15174 | /* We don't need the line table offset. */ | |
15175 | mac_ptr += *offset_size; | |
757a13d0 | 15176 | |
cf2c3c16 TT |
15177 | /* Vendor opcode descriptions. */ |
15178 | if ((flags & 4) != 0) | |
15179 | { | |
15180 | unsigned int i, count; | |
757a13d0 | 15181 | |
cf2c3c16 TT |
15182 | count = read_1_byte (abfd, mac_ptr); |
15183 | ++mac_ptr; | |
15184 | for (i = 0; i < count; ++i) | |
15185 | { | |
15186 | unsigned int opcode, bytes_read; | |
15187 | unsigned long arg; | |
15188 | ||
15189 | opcode = read_1_byte (abfd, mac_ptr); | |
15190 | ++mac_ptr; | |
15191 | opcode_definitions[opcode] = mac_ptr; | |
15192 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15193 | mac_ptr += bytes_read; | |
15194 | mac_ptr += arg; | |
15195 | } | |
757a13d0 | 15196 | } |
cf2c3c16 | 15197 | } |
757a13d0 | 15198 | |
cf2c3c16 TT |
15199 | return mac_ptr; |
15200 | } | |
757a13d0 | 15201 | |
cf2c3c16 TT |
15202 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
15203 | including DW_GNU_MACINFO_transparent_include. */ | |
15204 | ||
15205 | static void | |
15206 | dwarf_decode_macro_bytes (bfd *abfd, gdb_byte *mac_ptr, gdb_byte *mac_end, | |
15207 | struct macro_source_file *current_file, | |
15208 | struct line_header *lh, char *comp_dir, | |
15209 | struct dwarf2_section_info *section, | |
15210 | int section_is_gnu, | |
15211 | unsigned int offset_size, | |
15212 | struct objfile *objfile) | |
15213 | { | |
15214 | enum dwarf_macro_record_type macinfo_type; | |
15215 | int at_commandline; | |
15216 | gdb_byte *opcode_definitions[256]; | |
757a13d0 | 15217 | |
cf2c3c16 TT |
15218 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
15219 | &offset_size, section_is_gnu); | |
15220 | if (mac_ptr == NULL) | |
15221 | { | |
15222 | /* We already issued a complaint. */ | |
15223 | return; | |
15224 | } | |
757a13d0 JK |
15225 | |
15226 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
15227 | GDB is still reading the definitions from command line. First | |
15228 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
15229 | to create CURRENT_FILE for the main source holding also the command line | |
15230 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
15231 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
15232 | ||
15233 | at_commandline = 1; | |
15234 | ||
15235 | do | |
15236 | { | |
15237 | /* Do we at least have room for a macinfo type byte? */ | |
15238 | if (mac_ptr >= mac_end) | |
15239 | { | |
cf2c3c16 | 15240 | dwarf2_macros_too_long_complaint (section); |
757a13d0 JK |
15241 | break; |
15242 | } | |
15243 | ||
15244 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
15245 | mac_ptr++; | |
15246 | ||
cf2c3c16 TT |
15247 | /* Note that we rely on the fact that the corresponding GNU and |
15248 | DWARF constants are the same. */ | |
757a13d0 JK |
15249 | switch (macinfo_type) |
15250 | { | |
15251 | /* A zero macinfo type indicates the end of the macro | |
15252 | information. */ | |
15253 | case 0: | |
15254 | break; | |
2e276125 | 15255 | |
cf2c3c16 TT |
15256 | case DW_MACRO_GNU_define: |
15257 | case DW_MACRO_GNU_undef: | |
15258 | case DW_MACRO_GNU_define_indirect: | |
15259 | case DW_MACRO_GNU_undef_indirect: | |
2e276125 | 15260 | { |
891d2f0b | 15261 | unsigned int bytes_read; |
2e276125 JB |
15262 | int line; |
15263 | char *body; | |
cf2c3c16 | 15264 | int is_define; |
2e276125 | 15265 | |
cf2c3c16 TT |
15266 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
15267 | mac_ptr += bytes_read; | |
15268 | ||
15269 | if (macinfo_type == DW_MACRO_GNU_define | |
15270 | || macinfo_type == DW_MACRO_GNU_undef) | |
15271 | { | |
15272 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
15273 | mac_ptr += bytes_read; | |
15274 | } | |
15275 | else | |
15276 | { | |
15277 | LONGEST str_offset; | |
15278 | ||
15279 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
15280 | mac_ptr += offset_size; | |
2e276125 | 15281 | |
cf2c3c16 TT |
15282 | body = read_indirect_string_at_offset (abfd, str_offset); |
15283 | } | |
15284 | ||
15285 | is_define = (macinfo_type == DW_MACRO_GNU_define | |
15286 | || macinfo_type == DW_MACRO_GNU_define_indirect); | |
2e276125 | 15287 | if (! current_file) |
757a13d0 JK |
15288 | { |
15289 | /* DWARF violation as no main source is present. */ | |
15290 | complaint (&symfile_complaints, | |
15291 | _("debug info with no main source gives macro %s " | |
15292 | "on line %d: %s"), | |
cf2c3c16 TT |
15293 | is_define ? _("definition") : _("undefinition"), |
15294 | line, body); | |
757a13d0 JK |
15295 | break; |
15296 | } | |
3e43a32a MS |
15297 | if ((line == 0 && !at_commandline) |
15298 | || (line != 0 && at_commandline)) | |
4d3c2250 | 15299 | complaint (&symfile_complaints, |
757a13d0 JK |
15300 | _("debug info gives %s macro %s with %s line %d: %s"), |
15301 | at_commandline ? _("command-line") : _("in-file"), | |
cf2c3c16 | 15302 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
15303 | line == 0 ? _("zero") : _("non-zero"), line, body); |
15304 | ||
cf2c3c16 | 15305 | if (is_define) |
757a13d0 | 15306 | parse_macro_definition (current_file, line, body); |
cf2c3c16 TT |
15307 | else |
15308 | { | |
15309 | gdb_assert (macinfo_type == DW_MACRO_GNU_undef | |
15310 | || macinfo_type == DW_MACRO_GNU_undef_indirect); | |
15311 | macro_undef (current_file, line, body); | |
15312 | } | |
2e276125 JB |
15313 | } |
15314 | break; | |
15315 | ||
cf2c3c16 | 15316 | case DW_MACRO_GNU_start_file: |
2e276125 | 15317 | { |
891d2f0b | 15318 | unsigned int bytes_read; |
2e276125 JB |
15319 | int line, file; |
15320 | ||
15321 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15322 | mac_ptr += bytes_read; | |
15323 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15324 | mac_ptr += bytes_read; | |
15325 | ||
3e43a32a MS |
15326 | if ((line == 0 && !at_commandline) |
15327 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
15328 | complaint (&symfile_complaints, |
15329 | _("debug info gives source %d included " | |
15330 | "from %s at %s line %d"), | |
15331 | file, at_commandline ? _("command-line") : _("file"), | |
15332 | line == 0 ? _("zero") : _("non-zero"), line); | |
15333 | ||
15334 | if (at_commandline) | |
15335 | { | |
cf2c3c16 TT |
15336 | /* This DW_MACRO_GNU_start_file was executed in the |
15337 | pass one. */ | |
757a13d0 JK |
15338 | at_commandline = 0; |
15339 | } | |
15340 | else | |
15341 | current_file = macro_start_file (file, line, | |
15342 | current_file, comp_dir, | |
cf2c3c16 | 15343 | lh, objfile); |
2e276125 JB |
15344 | } |
15345 | break; | |
15346 | ||
cf2c3c16 | 15347 | case DW_MACRO_GNU_end_file: |
2e276125 | 15348 | if (! current_file) |
4d3c2250 | 15349 | complaint (&symfile_complaints, |
3e43a32a MS |
15350 | _("macro debug info has an unmatched " |
15351 | "`close_file' directive")); | |
2e276125 JB |
15352 | else |
15353 | { | |
15354 | current_file = current_file->included_by; | |
15355 | if (! current_file) | |
15356 | { | |
cf2c3c16 | 15357 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
15358 | |
15359 | /* GCC circa March 2002 doesn't produce the zero | |
15360 | type byte marking the end of the compilation | |
15361 | unit. Complain if it's not there, but exit no | |
15362 | matter what. */ | |
15363 | ||
15364 | /* Do we at least have room for a macinfo type byte? */ | |
15365 | if (mac_ptr >= mac_end) | |
15366 | { | |
cf2c3c16 | 15367 | dwarf2_macros_too_long_complaint (section); |
2e276125 JB |
15368 | return; |
15369 | } | |
15370 | ||
15371 | /* We don't increment mac_ptr here, so this is just | |
15372 | a look-ahead. */ | |
15373 | next_type = read_1_byte (abfd, mac_ptr); | |
15374 | if (next_type != 0) | |
4d3c2250 | 15375 | complaint (&symfile_complaints, |
3e43a32a MS |
15376 | _("no terminating 0-type entry for " |
15377 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
15378 | |
15379 | return; | |
15380 | } | |
15381 | } | |
15382 | break; | |
15383 | ||
cf2c3c16 TT |
15384 | case DW_MACRO_GNU_transparent_include: |
15385 | { | |
15386 | LONGEST offset; | |
15387 | ||
15388 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
15389 | mac_ptr += offset_size; | |
15390 | ||
15391 | dwarf_decode_macro_bytes (abfd, | |
15392 | section->buffer + offset, | |
15393 | mac_end, current_file, | |
15394 | lh, comp_dir, | |
15395 | section, section_is_gnu, | |
15396 | offset_size, objfile); | |
15397 | } | |
15398 | break; | |
15399 | ||
2e276125 | 15400 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
15401 | if (!section_is_gnu) |
15402 | { | |
15403 | unsigned int bytes_read; | |
15404 | int constant; | |
2e276125 | 15405 | |
cf2c3c16 TT |
15406 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
15407 | mac_ptr += bytes_read; | |
15408 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
15409 | mac_ptr += bytes_read; | |
2e276125 | 15410 | |
cf2c3c16 TT |
15411 | /* We don't recognize any vendor extensions. */ |
15412 | break; | |
15413 | } | |
15414 | /* FALLTHROUGH */ | |
15415 | ||
15416 | default: | |
15417 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
15418 | mac_ptr, abfd, offset_size, | |
15419 | section); | |
15420 | if (mac_ptr == NULL) | |
15421 | return; | |
15422 | break; | |
2e276125 | 15423 | } |
757a13d0 | 15424 | } while (macinfo_type != 0); |
2e276125 | 15425 | } |
8e19ed76 | 15426 | |
cf2c3c16 TT |
15427 | static void |
15428 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
15429 | char *comp_dir, bfd *abfd, | |
15430 | struct dwarf2_cu *cu, | |
15431 | struct dwarf2_section_info *section, | |
15432 | int section_is_gnu) | |
15433 | { | |
bb5ed363 | 15434 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
15435 | gdb_byte *mac_ptr, *mac_end; |
15436 | struct macro_source_file *current_file = 0; | |
15437 | enum dwarf_macro_record_type macinfo_type; | |
15438 | unsigned int offset_size = cu->header.offset_size; | |
15439 | gdb_byte *opcode_definitions[256]; | |
15440 | ||
bb5ed363 | 15441 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
15442 | if (section->buffer == NULL) |
15443 | { | |
15444 | complaint (&symfile_complaints, _("missing %s section"), | |
15445 | section->asection->name); | |
15446 | return; | |
15447 | } | |
15448 | ||
15449 | /* First pass: Find the name of the base filename. | |
15450 | This filename is needed in order to process all macros whose definition | |
15451 | (or undefinition) comes from the command line. These macros are defined | |
15452 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
15453 | associated to the base file. | |
15454 | ||
15455 | To determine the base file name, we scan the macro definitions until we | |
15456 | reach the first DW_MACINFO_start_file entry. We then initialize | |
15457 | CURRENT_FILE accordingly so that any macro definition found before the | |
15458 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
15459 | ||
15460 | mac_ptr = section->buffer + offset; | |
15461 | mac_end = section->buffer + section->size; | |
15462 | ||
15463 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
15464 | &offset_size, section_is_gnu); | |
15465 | if (mac_ptr == NULL) | |
15466 | { | |
15467 | /* We already issued a complaint. */ | |
15468 | return; | |
15469 | } | |
15470 | ||
15471 | do | |
15472 | { | |
15473 | /* Do we at least have room for a macinfo type byte? */ | |
15474 | if (mac_ptr >= mac_end) | |
15475 | { | |
15476 | /* Complaint is printed during the second pass as GDB will probably | |
15477 | stop the first pass earlier upon finding | |
15478 | DW_MACINFO_start_file. */ | |
15479 | break; | |
15480 | } | |
15481 | ||
15482 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
15483 | mac_ptr++; | |
15484 | ||
15485 | /* Note that we rely on the fact that the corresponding GNU and | |
15486 | DWARF constants are the same. */ | |
15487 | switch (macinfo_type) | |
15488 | { | |
15489 | /* A zero macinfo type indicates the end of the macro | |
15490 | information. */ | |
15491 | case 0: | |
15492 | break; | |
15493 | ||
15494 | case DW_MACRO_GNU_define: | |
15495 | case DW_MACRO_GNU_undef: | |
15496 | /* Only skip the data by MAC_PTR. */ | |
15497 | { | |
15498 | unsigned int bytes_read; | |
15499 | ||
15500 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15501 | mac_ptr += bytes_read; | |
15502 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
15503 | mac_ptr += bytes_read; | |
15504 | } | |
15505 | break; | |
15506 | ||
15507 | case DW_MACRO_GNU_start_file: | |
15508 | { | |
15509 | unsigned int bytes_read; | |
15510 | int line, file; | |
15511 | ||
15512 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15513 | mac_ptr += bytes_read; | |
15514 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15515 | mac_ptr += bytes_read; | |
15516 | ||
15517 | current_file = macro_start_file (file, line, current_file, | |
bb5ed363 | 15518 | comp_dir, lh, objfile); |
cf2c3c16 TT |
15519 | } |
15520 | break; | |
15521 | ||
15522 | case DW_MACRO_GNU_end_file: | |
15523 | /* No data to skip by MAC_PTR. */ | |
15524 | break; | |
15525 | ||
15526 | case DW_MACRO_GNU_define_indirect: | |
15527 | case DW_MACRO_GNU_undef_indirect: | |
15528 | { | |
15529 | unsigned int bytes_read; | |
15530 | ||
15531 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15532 | mac_ptr += bytes_read; | |
15533 | mac_ptr += offset_size; | |
15534 | } | |
15535 | break; | |
15536 | ||
15537 | case DW_MACRO_GNU_transparent_include: | |
15538 | /* Note that, according to the spec, a transparent include | |
15539 | chain cannot call DW_MACRO_GNU_start_file. So, we can just | |
15540 | skip this opcode. */ | |
15541 | mac_ptr += offset_size; | |
15542 | break; | |
15543 | ||
15544 | case DW_MACINFO_vendor_ext: | |
15545 | /* Only skip the data by MAC_PTR. */ | |
15546 | if (!section_is_gnu) | |
15547 | { | |
15548 | unsigned int bytes_read; | |
15549 | ||
15550 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
15551 | mac_ptr += bytes_read; | |
15552 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
15553 | mac_ptr += bytes_read; | |
15554 | } | |
15555 | /* FALLTHROUGH */ | |
15556 | ||
15557 | default: | |
15558 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
15559 | mac_ptr, abfd, offset_size, | |
15560 | section); | |
15561 | if (mac_ptr == NULL) | |
15562 | return; | |
15563 | break; | |
15564 | } | |
15565 | } while (macinfo_type != 0 && current_file == NULL); | |
15566 | ||
15567 | /* Second pass: Process all entries. | |
15568 | ||
15569 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
15570 | command-line macro definitions/undefinitions. This flag is unset when we | |
15571 | reach the first DW_MACINFO_start_file entry. */ | |
15572 | ||
15573 | dwarf_decode_macro_bytes (abfd, section->buffer + offset, mac_end, | |
15574 | current_file, lh, comp_dir, section, section_is_gnu, | |
bb5ed363 | 15575 | offset_size, objfile); |
cf2c3c16 TT |
15576 | } |
15577 | ||
8e19ed76 | 15578 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 15579 | if so return true else false. */ |
8e19ed76 PS |
15580 | static int |
15581 | attr_form_is_block (struct attribute *attr) | |
15582 | { | |
15583 | return (attr == NULL ? 0 : | |
15584 | attr->form == DW_FORM_block1 | |
15585 | || attr->form == DW_FORM_block2 | |
15586 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
15587 | || attr->form == DW_FORM_block |
15588 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 15589 | } |
4c2df51b | 15590 | |
c6a0999f JB |
15591 | /* Return non-zero if ATTR's value is a section offset --- classes |
15592 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
15593 | You may use DW_UNSND (attr) to retrieve such offsets. | |
15594 | ||
15595 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
15596 | may have a value that belongs to more than one of these classes; it | |
15597 | would be ambiguous if we did, because we use the same forms for all | |
15598 | of them. */ | |
3690dd37 JB |
15599 | static int |
15600 | attr_form_is_section_offset (struct attribute *attr) | |
15601 | { | |
15602 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
15603 | || attr->form == DW_FORM_data8 |
15604 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
15605 | } |
15606 | ||
15607 | ||
15608 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
15609 | zero otherwise. When this function returns true, you can apply | |
15610 | dwarf2_get_attr_constant_value to it. | |
15611 | ||
15612 | However, note that for some attributes you must check | |
15613 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
15614 | and DW_FORM_data8 are members of both the constant class, and of | |
15615 | the classes that contain offsets into other debug sections | |
15616 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
15617 | that, if an attribute's can be either a constant or one of the | |
15618 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
15619 | taken as section offsets, not constants. */ | |
15620 | static int | |
15621 | attr_form_is_constant (struct attribute *attr) | |
15622 | { | |
15623 | switch (attr->form) | |
15624 | { | |
15625 | case DW_FORM_sdata: | |
15626 | case DW_FORM_udata: | |
15627 | case DW_FORM_data1: | |
15628 | case DW_FORM_data2: | |
15629 | case DW_FORM_data4: | |
15630 | case DW_FORM_data8: | |
15631 | return 1; | |
15632 | default: | |
15633 | return 0; | |
15634 | } | |
15635 | } | |
15636 | ||
8cf6f0b1 TT |
15637 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
15638 | ||
15639 | static void | |
15640 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
15641 | struct dwarf2_loclist_baton *baton, | |
15642 | struct attribute *attr) | |
15643 | { | |
15644 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
15645 | &dwarf2_per_objfile->loc); | |
15646 | ||
15647 | baton->per_cu = cu->per_cu; | |
15648 | gdb_assert (baton->per_cu); | |
15649 | /* We don't know how long the location list is, but make sure we | |
15650 | don't run off the edge of the section. */ | |
15651 | baton->size = dwarf2_per_objfile->loc.size - DW_UNSND (attr); | |
15652 | baton->data = dwarf2_per_objfile->loc.buffer + DW_UNSND (attr); | |
15653 | baton->base_address = cu->base_address; | |
15654 | } | |
15655 | ||
4c2df51b DJ |
15656 | static void |
15657 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 15658 | struct dwarf2_cu *cu) |
4c2df51b | 15659 | { |
bb5ed363 DE |
15660 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
15661 | ||
3690dd37 | 15662 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
15663 | /* ".debug_loc" may not exist at all, or the offset may be outside |
15664 | the section. If so, fall through to the complaint in the | |
15665 | other branch. */ | |
bb5ed363 | 15666 | && DW_UNSND (attr) < dwarf2_section_size (objfile, |
9e0ac564 | 15667 | &dwarf2_per_objfile->loc)) |
4c2df51b | 15668 | { |
0d53c4c4 | 15669 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 15670 | |
bb5ed363 | 15671 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 15672 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 15673 | |
8cf6f0b1 | 15674 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 15675 | |
d00adf39 | 15676 | if (cu->base_known == 0) |
0d53c4c4 | 15677 | complaint (&symfile_complaints, |
3e43a32a MS |
15678 | _("Location list used without " |
15679 | "specifying the CU base address.")); | |
4c2df51b | 15680 | |
768a979c | 15681 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
15682 | SYMBOL_LOCATION_BATON (sym) = baton; |
15683 | } | |
15684 | else | |
15685 | { | |
15686 | struct dwarf2_locexpr_baton *baton; | |
15687 | ||
bb5ed363 | 15688 | baton = obstack_alloc (&objfile->objfile_obstack, |
0d53c4c4 | 15689 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
15690 | baton->per_cu = cu->per_cu; |
15691 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
15692 | |
15693 | if (attr_form_is_block (attr)) | |
15694 | { | |
15695 | /* Note that we're just copying the block's data pointer | |
15696 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
15697 | info_buffer for SYM's objfile; right now we never release |
15698 | that buffer, but when we do clean up properly this may | |
15699 | need to change. */ | |
0d53c4c4 DJ |
15700 | baton->size = DW_BLOCK (attr)->size; |
15701 | baton->data = DW_BLOCK (attr)->data; | |
15702 | } | |
15703 | else | |
15704 | { | |
15705 | dwarf2_invalid_attrib_class_complaint ("location description", | |
15706 | SYMBOL_NATURAL_NAME (sym)); | |
15707 | baton->size = 0; | |
0d53c4c4 | 15708 | } |
6e70227d | 15709 | |
768a979c | 15710 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
15711 | SYMBOL_LOCATION_BATON (sym) = baton; |
15712 | } | |
4c2df51b | 15713 | } |
6502dd73 | 15714 | |
9aa1f1e3 TT |
15715 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
15716 | came from a separate debuginfo file, then the master objfile is | |
15717 | returned. */ | |
ae0d2f24 UW |
15718 | |
15719 | struct objfile * | |
15720 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
15721 | { | |
9291a0cd | 15722 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
15723 | |
15724 | /* Return the master objfile, so that we can report and look up the | |
15725 | correct file containing this variable. */ | |
15726 | if (objfile->separate_debug_objfile_backlink) | |
15727 | objfile = objfile->separate_debug_objfile_backlink; | |
15728 | ||
15729 | return objfile; | |
15730 | } | |
15731 | ||
96408a79 SA |
15732 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
15733 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
15734 | CU_HEADERP first. */ | |
15735 | ||
15736 | static const struct comp_unit_head * | |
15737 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
15738 | struct dwarf2_per_cu_data *per_cu) | |
15739 | { | |
15740 | struct objfile *objfile; | |
15741 | struct dwarf2_per_objfile *per_objfile; | |
15742 | gdb_byte *info_ptr; | |
15743 | ||
15744 | if (per_cu->cu) | |
15745 | return &per_cu->cu->header; | |
15746 | ||
15747 | objfile = per_cu->objfile; | |
15748 | per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
15749 | info_ptr = per_objfile->info.buffer + per_cu->offset; | |
15750 | ||
15751 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
15752 | read_comp_unit_head (cu_headerp, info_ptr, objfile->obfd); | |
15753 | ||
15754 | return cu_headerp; | |
15755 | } | |
15756 | ||
ae0d2f24 UW |
15757 | /* Return the address size given in the compilation unit header for CU. */ |
15758 | ||
15759 | CORE_ADDR | |
15760 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
15761 | { | |
96408a79 SA |
15762 | struct comp_unit_head cu_header_local; |
15763 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 15764 | |
96408a79 SA |
15765 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
15766 | ||
15767 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
15768 | } |
15769 | ||
9eae7c52 TT |
15770 | /* Return the offset size given in the compilation unit header for CU. */ |
15771 | ||
15772 | int | |
15773 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
15774 | { | |
96408a79 SA |
15775 | struct comp_unit_head cu_header_local; |
15776 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 15777 | |
96408a79 SA |
15778 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
15779 | ||
15780 | return cu_headerp->offset_size; | |
15781 | } | |
15782 | ||
15783 | /* See its dwarf2loc.h declaration. */ | |
15784 | ||
15785 | int | |
15786 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
15787 | { | |
15788 | struct comp_unit_head cu_header_local; | |
15789 | const struct comp_unit_head *cu_headerp; | |
15790 | ||
15791 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
15792 | ||
15793 | if (cu_headerp->version == 2) | |
15794 | return cu_headerp->addr_size; | |
15795 | else | |
15796 | return cu_headerp->offset_size; | |
181cebd4 JK |
15797 | } |
15798 | ||
9aa1f1e3 TT |
15799 | /* Return the text offset of the CU. The returned offset comes from |
15800 | this CU's objfile. If this objfile came from a separate debuginfo | |
15801 | file, then the offset may be different from the corresponding | |
15802 | offset in the parent objfile. */ | |
15803 | ||
15804 | CORE_ADDR | |
15805 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
15806 | { | |
bb3fa9d0 | 15807 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
15808 | |
15809 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
15810 | } | |
15811 | ||
348e048f DE |
15812 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
15813 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
15814 | |
15815 | static struct dwarf2_per_cu_data * | |
c764a876 | 15816 | dwarf2_find_containing_comp_unit (unsigned int offset, |
ae038cb0 DJ |
15817 | struct objfile *objfile) |
15818 | { | |
15819 | struct dwarf2_per_cu_data *this_cu; | |
15820 | int low, high; | |
15821 | ||
ae038cb0 DJ |
15822 | low = 0; |
15823 | high = dwarf2_per_objfile->n_comp_units - 1; | |
15824 | while (high > low) | |
15825 | { | |
15826 | int mid = low + (high - low) / 2; | |
9a619af0 | 15827 | |
ae038cb0 DJ |
15828 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) |
15829 | high = mid; | |
15830 | else | |
15831 | low = mid + 1; | |
15832 | } | |
15833 | gdb_assert (low == high); | |
15834 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
15835 | { | |
10b3939b | 15836 | if (low == 0) |
8a3fe4f8 AC |
15837 | error (_("Dwarf Error: could not find partial DIE containing " |
15838 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
15839 | (long) offset, bfd_get_filename (objfile->obfd)); |
15840 | ||
ae038cb0 DJ |
15841 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
15842 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
15843 | } | |
15844 | else | |
15845 | { | |
15846 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
15847 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
15848 | && offset >= this_cu->offset + this_cu->length) | |
c764a876 | 15849 | error (_("invalid dwarf2 offset %u"), offset); |
ae038cb0 DJ |
15850 | gdb_assert (offset < this_cu->offset + this_cu->length); |
15851 | return this_cu; | |
15852 | } | |
15853 | } | |
15854 | ||
10b3939b DJ |
15855 | /* Locate the compilation unit from OBJFILE which is located at exactly |
15856 | OFFSET. Raises an error on failure. */ | |
15857 | ||
ae038cb0 | 15858 | static struct dwarf2_per_cu_data * |
c764a876 | 15859 | dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile) |
ae038cb0 DJ |
15860 | { |
15861 | struct dwarf2_per_cu_data *this_cu; | |
9a619af0 | 15862 | |
ae038cb0 DJ |
15863 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); |
15864 | if (this_cu->offset != offset) | |
c764a876 | 15865 | error (_("no compilation unit with offset %u."), offset); |
ae038cb0 DJ |
15866 | return this_cu; |
15867 | } | |
15868 | ||
9816fde3 | 15869 | /* Initialize dwarf2_cu CU for OBJFILE in a pre-allocated space. */ |
93311388 | 15870 | |
9816fde3 JK |
15871 | static void |
15872 | init_one_comp_unit (struct dwarf2_cu *cu, struct objfile *objfile) | |
93311388 | 15873 | { |
9816fde3 | 15874 | memset (cu, 0, sizeof (*cu)); |
93311388 DE |
15875 | cu->objfile = objfile; |
15876 | obstack_init (&cu->comp_unit_obstack); | |
9816fde3 JK |
15877 | } |
15878 | ||
15879 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
15880 | ||
15881 | static void | |
15882 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die) | |
15883 | { | |
15884 | struct attribute *attr; | |
15885 | ||
15886 | /* Set the language we're debugging. */ | |
15887 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
15888 | if (attr) | |
15889 | set_cu_language (DW_UNSND (attr), cu); | |
15890 | else | |
9cded63f TT |
15891 | { |
15892 | cu->language = language_minimal; | |
15893 | cu->language_defn = language_def (cu->language); | |
15894 | } | |
93311388 DE |
15895 | } |
15896 | ||
ae038cb0 DJ |
15897 | /* Release one cached compilation unit, CU. We unlink it from the tree |
15898 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
15899 | the caller is responsible for that. |
15900 | NOTE: DATA is a void * because this function is also used as a | |
15901 | cleanup routine. */ | |
ae038cb0 DJ |
15902 | |
15903 | static void | |
68dc6402 | 15904 | free_heap_comp_unit (void *data) |
ae038cb0 DJ |
15905 | { |
15906 | struct dwarf2_cu *cu = data; | |
15907 | ||
15908 | if (cu->per_cu != NULL) | |
15909 | cu->per_cu->cu = NULL; | |
15910 | cu->per_cu = NULL; | |
15911 | ||
15912 | obstack_free (&cu->comp_unit_obstack, NULL); | |
15913 | ||
15914 | xfree (cu); | |
15915 | } | |
15916 | ||
72bf9492 | 15917 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
15918 | when we're finished with it. We can't free the pointer itself, but be |
15919 | sure to unlink it from the cache. Also release any associated storage | |
15920 | and perform cache maintenance. | |
72bf9492 DJ |
15921 | |
15922 | Only used during partial symbol parsing. */ | |
15923 | ||
15924 | static void | |
15925 | free_stack_comp_unit (void *data) | |
15926 | { | |
15927 | struct dwarf2_cu *cu = data; | |
15928 | ||
15929 | obstack_free (&cu->comp_unit_obstack, NULL); | |
15930 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
15931 | |
15932 | if (cu->per_cu != NULL) | |
15933 | { | |
15934 | /* This compilation unit is on the stack in our caller, so we | |
15935 | should not xfree it. Just unlink it. */ | |
15936 | cu->per_cu->cu = NULL; | |
15937 | cu->per_cu = NULL; | |
15938 | ||
15939 | /* If we had a per-cu pointer, then we may have other compilation | |
15940 | units loaded, so age them now. */ | |
15941 | age_cached_comp_units (); | |
15942 | } | |
15943 | } | |
15944 | ||
15945 | /* Free all cached compilation units. */ | |
15946 | ||
15947 | static void | |
15948 | free_cached_comp_units (void *data) | |
15949 | { | |
15950 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
15951 | ||
15952 | per_cu = dwarf2_per_objfile->read_in_chain; | |
15953 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
15954 | while (per_cu != NULL) | |
15955 | { | |
15956 | struct dwarf2_per_cu_data *next_cu; | |
15957 | ||
15958 | next_cu = per_cu->cu->read_in_chain; | |
15959 | ||
68dc6402 | 15960 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
15961 | *last_chain = next_cu; |
15962 | ||
15963 | per_cu = next_cu; | |
15964 | } | |
15965 | } | |
15966 | ||
15967 | /* Increase the age counter on each cached compilation unit, and free | |
15968 | any that are too old. */ | |
15969 | ||
15970 | static void | |
15971 | age_cached_comp_units (void) | |
15972 | { | |
15973 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
15974 | ||
15975 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
15976 | per_cu = dwarf2_per_objfile->read_in_chain; | |
15977 | while (per_cu != NULL) | |
15978 | { | |
15979 | per_cu->cu->last_used ++; | |
15980 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
15981 | dwarf2_mark (per_cu->cu); | |
15982 | per_cu = per_cu->cu->read_in_chain; | |
15983 | } | |
15984 | ||
15985 | per_cu = dwarf2_per_objfile->read_in_chain; | |
15986 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
15987 | while (per_cu != NULL) | |
15988 | { | |
15989 | struct dwarf2_per_cu_data *next_cu; | |
15990 | ||
15991 | next_cu = per_cu->cu->read_in_chain; | |
15992 | ||
15993 | if (!per_cu->cu->mark) | |
15994 | { | |
68dc6402 | 15995 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
15996 | *last_chain = next_cu; |
15997 | } | |
15998 | else | |
15999 | last_chain = &per_cu->cu->read_in_chain; | |
16000 | ||
16001 | per_cu = next_cu; | |
16002 | } | |
16003 | } | |
16004 | ||
16005 | /* Remove a single compilation unit from the cache. */ | |
16006 | ||
16007 | static void | |
16008 | free_one_cached_comp_unit (void *target_cu) | |
16009 | { | |
16010 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
16011 | ||
16012 | per_cu = dwarf2_per_objfile->read_in_chain; | |
16013 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
16014 | while (per_cu != NULL) | |
16015 | { | |
16016 | struct dwarf2_per_cu_data *next_cu; | |
16017 | ||
16018 | next_cu = per_cu->cu->read_in_chain; | |
16019 | ||
16020 | if (per_cu->cu == target_cu) | |
16021 | { | |
68dc6402 | 16022 | free_heap_comp_unit (per_cu->cu); |
ae038cb0 DJ |
16023 | *last_chain = next_cu; |
16024 | break; | |
16025 | } | |
16026 | else | |
16027 | last_chain = &per_cu->cu->read_in_chain; | |
16028 | ||
16029 | per_cu = next_cu; | |
16030 | } | |
16031 | } | |
16032 | ||
fe3e1990 DJ |
16033 | /* Release all extra memory associated with OBJFILE. */ |
16034 | ||
16035 | void | |
16036 | dwarf2_free_objfile (struct objfile *objfile) | |
16037 | { | |
16038 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
16039 | ||
16040 | if (dwarf2_per_objfile == NULL) | |
16041 | return; | |
16042 | ||
16043 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
16044 | free_cached_comp_units (NULL); | |
16045 | ||
7b9f3c50 DE |
16046 | if (dwarf2_per_objfile->quick_file_names_table) |
16047 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 16048 | |
fe3e1990 DJ |
16049 | /* Everything else should be on the objfile obstack. */ |
16050 | } | |
16051 | ||
1c379e20 DJ |
16052 | /* A pair of DIE offset and GDB type pointer. We store these |
16053 | in a hash table separate from the DIEs, and preserve them | |
16054 | when the DIEs are flushed out of cache. */ | |
16055 | ||
16056 | struct dwarf2_offset_and_type | |
16057 | { | |
16058 | unsigned int offset; | |
16059 | struct type *type; | |
16060 | }; | |
16061 | ||
16062 | /* Hash function for a dwarf2_offset_and_type. */ | |
16063 | ||
16064 | static hashval_t | |
16065 | offset_and_type_hash (const void *item) | |
16066 | { | |
16067 | const struct dwarf2_offset_and_type *ofs = item; | |
9a619af0 | 16068 | |
1c379e20 DJ |
16069 | return ofs->offset; |
16070 | } | |
16071 | ||
16072 | /* Equality function for a dwarf2_offset_and_type. */ | |
16073 | ||
16074 | static int | |
16075 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
16076 | { | |
16077 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
16078 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 16079 | |
1c379e20 DJ |
16080 | return ofs_lhs->offset == ofs_rhs->offset; |
16081 | } | |
16082 | ||
16083 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
16084 | table if necessary. For convenience, return TYPE. |
16085 | ||
16086 | The DIEs reading must have careful ordering to: | |
16087 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
16088 | reading current DIE. | |
16089 | * Not trying to dereference contents of still incompletely read in types | |
16090 | while reading in other DIEs. | |
16091 | * Enable referencing still incompletely read in types just by a pointer to | |
16092 | the type without accessing its fields. | |
16093 | ||
16094 | Therefore caller should follow these rules: | |
16095 | * Try to fetch any prerequisite types we may need to build this DIE type | |
16096 | before building the type and calling set_die_type. | |
e71ec853 | 16097 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
16098 | possible before fetching more types to complete the current type. |
16099 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 16100 | |
f792889a | 16101 | static struct type * |
1c379e20 DJ |
16102 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
16103 | { | |
16104 | struct dwarf2_offset_and_type **slot, ofs; | |
673bfd45 DE |
16105 | struct objfile *objfile = cu->objfile; |
16106 | htab_t *type_hash_ptr; | |
1c379e20 | 16107 | |
b4ba55a1 JB |
16108 | /* For Ada types, make sure that the gnat-specific data is always |
16109 | initialized (if not already set). There are a few types where | |
16110 | we should not be doing so, because the type-specific area is | |
16111 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
16112 | where the type-specific area is used to store the floatformat). | |
16113 | But this is not a problem, because the gnat-specific information | |
16114 | is actually not needed for these types. */ | |
16115 | if (need_gnat_info (cu) | |
16116 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
16117 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
16118 | && !HAVE_GNAT_AUX_INFO (type)) | |
16119 | INIT_GNAT_SPECIFIC (type); | |
16120 | ||
b0df02fd | 16121 | if (cu->per_cu->debug_types_section) |
673bfd45 DE |
16122 | type_hash_ptr = &dwarf2_per_objfile->debug_types_type_hash; |
16123 | else | |
16124 | type_hash_ptr = &dwarf2_per_objfile->debug_info_type_hash; | |
16125 | ||
16126 | if (*type_hash_ptr == NULL) | |
f792889a | 16127 | { |
673bfd45 DE |
16128 | *type_hash_ptr |
16129 | = htab_create_alloc_ex (127, | |
f792889a DJ |
16130 | offset_and_type_hash, |
16131 | offset_and_type_eq, | |
16132 | NULL, | |
673bfd45 | 16133 | &objfile->objfile_obstack, |
f792889a DJ |
16134 | hashtab_obstack_allocate, |
16135 | dummy_obstack_deallocate); | |
f792889a | 16136 | } |
1c379e20 DJ |
16137 | |
16138 | ofs.offset = die->offset; | |
16139 | ofs.type = type; | |
16140 | slot = (struct dwarf2_offset_and_type **) | |
673bfd45 | 16141 | htab_find_slot_with_hash (*type_hash_ptr, &ofs, ofs.offset, INSERT); |
7e314c57 JK |
16142 | if (*slot) |
16143 | complaint (&symfile_complaints, | |
16144 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
16145 | die->offset); | |
673bfd45 | 16146 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 16147 | **slot = ofs; |
f792889a | 16148 | return type; |
1c379e20 DJ |
16149 | } |
16150 | ||
673bfd45 DE |
16151 | /* Look up the type for the die at DIE_OFFSET in the appropriate type_hash |
16152 | table, or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
16153 | |
16154 | static struct type * | |
673bfd45 DE |
16155 | get_die_type_at_offset (unsigned int offset, |
16156 | struct dwarf2_per_cu_data *per_cu) | |
1c379e20 DJ |
16157 | { |
16158 | struct dwarf2_offset_and_type *slot, ofs; | |
673bfd45 | 16159 | htab_t type_hash; |
f792889a | 16160 | |
b0df02fd | 16161 | if (per_cu->debug_types_section) |
673bfd45 DE |
16162 | type_hash = dwarf2_per_objfile->debug_types_type_hash; |
16163 | else | |
16164 | type_hash = dwarf2_per_objfile->debug_info_type_hash; | |
f792889a DJ |
16165 | if (type_hash == NULL) |
16166 | return NULL; | |
1c379e20 | 16167 | |
673bfd45 | 16168 | ofs.offset = offset; |
1c379e20 DJ |
16169 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); |
16170 | if (slot) | |
16171 | return slot->type; | |
16172 | else | |
16173 | return NULL; | |
16174 | } | |
16175 | ||
673bfd45 DE |
16176 | /* Look up the type for DIE in the appropriate type_hash table, |
16177 | or return NULL if DIE does not have a saved type. */ | |
16178 | ||
16179 | static struct type * | |
16180 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
16181 | { | |
16182 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
16183 | } | |
16184 | ||
10b3939b DJ |
16185 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
16186 | ||
16187 | static void | |
16188 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
16189 | struct dwarf2_per_cu_data *ref_per_cu) | |
16190 | { | |
16191 | void **slot; | |
16192 | ||
16193 | if (cu->dependencies == NULL) | |
16194 | cu->dependencies | |
16195 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
16196 | NULL, &cu->comp_unit_obstack, | |
16197 | hashtab_obstack_allocate, | |
16198 | dummy_obstack_deallocate); | |
16199 | ||
16200 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
16201 | if (*slot == NULL) | |
16202 | *slot = ref_per_cu; | |
16203 | } | |
1c379e20 | 16204 | |
f504f079 DE |
16205 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
16206 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
16207 | cache that we must keep because we are keeping CU. */ |
16208 | ||
10b3939b DJ |
16209 | static int |
16210 | dwarf2_mark_helper (void **slot, void *data) | |
16211 | { | |
16212 | struct dwarf2_per_cu_data *per_cu; | |
16213 | ||
16214 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
16215 | |
16216 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
16217 | reading of the chain. As such dependencies remain valid it is not much | |
16218 | useful to track and undo them during QUIT cleanups. */ | |
16219 | if (per_cu->cu == NULL) | |
16220 | return 1; | |
16221 | ||
10b3939b DJ |
16222 | if (per_cu->cu->mark) |
16223 | return 1; | |
16224 | per_cu->cu->mark = 1; | |
16225 | ||
16226 | if (per_cu->cu->dependencies != NULL) | |
16227 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
16228 | ||
16229 | return 1; | |
16230 | } | |
16231 | ||
f504f079 DE |
16232 | /* Set the mark field in CU and in every other compilation unit in the |
16233 | cache that we must keep because we are keeping CU. */ | |
16234 | ||
ae038cb0 DJ |
16235 | static void |
16236 | dwarf2_mark (struct dwarf2_cu *cu) | |
16237 | { | |
16238 | if (cu->mark) | |
16239 | return; | |
16240 | cu->mark = 1; | |
10b3939b DJ |
16241 | if (cu->dependencies != NULL) |
16242 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
16243 | } |
16244 | ||
16245 | static void | |
16246 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
16247 | { | |
16248 | while (per_cu) | |
16249 | { | |
16250 | per_cu->cu->mark = 0; | |
16251 | per_cu = per_cu->cu->read_in_chain; | |
16252 | } | |
72bf9492 DJ |
16253 | } |
16254 | ||
72bf9492 DJ |
16255 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
16256 | is its offset in .debug_info for this objfile. */ | |
16257 | ||
16258 | static hashval_t | |
16259 | partial_die_hash (const void *item) | |
16260 | { | |
16261 | const struct partial_die_info *part_die = item; | |
9a619af0 | 16262 | |
72bf9492 DJ |
16263 | return part_die->offset; |
16264 | } | |
16265 | ||
16266 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
16267 | are equal if they have the same offset. */ | |
16268 | ||
16269 | static int | |
16270 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
16271 | { | |
16272 | const struct partial_die_info *part_die_lhs = item_lhs; | |
16273 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 16274 | |
72bf9492 DJ |
16275 | return part_die_lhs->offset == part_die_rhs->offset; |
16276 | } | |
16277 | ||
ae038cb0 DJ |
16278 | static struct cmd_list_element *set_dwarf2_cmdlist; |
16279 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
16280 | ||
16281 | static void | |
16282 | set_dwarf2_cmd (char *args, int from_tty) | |
16283 | { | |
16284 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
16285 | } | |
16286 | ||
16287 | static void | |
16288 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 16289 | { |
ae038cb0 DJ |
16290 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
16291 | } | |
16292 | ||
dce234bc PP |
16293 | /* If section described by INFO was mmapped, munmap it now. */ |
16294 | ||
16295 | static void | |
16296 | munmap_section_buffer (struct dwarf2_section_info *info) | |
16297 | { | |
b315ab21 | 16298 | if (info->map_addr != NULL) |
dce234bc PP |
16299 | { |
16300 | #ifdef HAVE_MMAP | |
b315ab21 | 16301 | int res; |
9a619af0 | 16302 | |
b315ab21 TG |
16303 | res = munmap (info->map_addr, info->map_len); |
16304 | gdb_assert (res == 0); | |
dce234bc PP |
16305 | #else |
16306 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
f3574227 | 16307 | gdb_assert_not_reached ("no mmap support"); |
dce234bc PP |
16308 | #endif |
16309 | } | |
16310 | } | |
16311 | ||
16312 | /* munmap debug sections for OBJFILE, if necessary. */ | |
16313 | ||
16314 | static void | |
c1bd65d0 | 16315 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
16316 | { |
16317 | struct dwarf2_per_objfile *data = d; | |
8b70b953 TT |
16318 | int ix; |
16319 | struct dwarf2_section_info *section; | |
9a619af0 | 16320 | |
16be1145 DE |
16321 | /* This is sorted according to the order they're defined in to make it easier |
16322 | to keep in sync. */ | |
dce234bc PP |
16323 | munmap_section_buffer (&data->info); |
16324 | munmap_section_buffer (&data->abbrev); | |
16325 | munmap_section_buffer (&data->line); | |
16be1145 | 16326 | munmap_section_buffer (&data->loc); |
dce234bc | 16327 | munmap_section_buffer (&data->macinfo); |
cf2c3c16 | 16328 | munmap_section_buffer (&data->macro); |
16be1145 | 16329 | munmap_section_buffer (&data->str); |
dce234bc | 16330 | munmap_section_buffer (&data->ranges); |
dce234bc PP |
16331 | munmap_section_buffer (&data->frame); |
16332 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd | 16333 | munmap_section_buffer (&data->gdb_index); |
8b70b953 TT |
16334 | |
16335 | for (ix = 0; | |
16336 | VEC_iterate (dwarf2_section_info_def, data->types, ix, section); | |
16337 | ++ix) | |
16338 | munmap_section_buffer (section); | |
16339 | ||
16340 | VEC_free (dwarf2_section_info_def, data->types); | |
9291a0cd TT |
16341 | } |
16342 | ||
16343 | \f | |
ae2de4f8 | 16344 | /* The "save gdb-index" command. */ |
9291a0cd TT |
16345 | |
16346 | /* The contents of the hash table we create when building the string | |
16347 | table. */ | |
16348 | struct strtab_entry | |
16349 | { | |
16350 | offset_type offset; | |
16351 | const char *str; | |
16352 | }; | |
16353 | ||
559a7a62 JK |
16354 | /* Hash function for a strtab_entry. |
16355 | ||
16356 | Function is used only during write_hash_table so no index format backward | |
16357 | compatibility is needed. */ | |
b89be57b | 16358 | |
9291a0cd TT |
16359 | static hashval_t |
16360 | hash_strtab_entry (const void *e) | |
16361 | { | |
16362 | const struct strtab_entry *entry = e; | |
559a7a62 | 16363 | return mapped_index_string_hash (INT_MAX, entry->str); |
9291a0cd TT |
16364 | } |
16365 | ||
16366 | /* Equality function for a strtab_entry. */ | |
b89be57b | 16367 | |
9291a0cd TT |
16368 | static int |
16369 | eq_strtab_entry (const void *a, const void *b) | |
16370 | { | |
16371 | const struct strtab_entry *ea = a; | |
16372 | const struct strtab_entry *eb = b; | |
16373 | return !strcmp (ea->str, eb->str); | |
16374 | } | |
16375 | ||
16376 | /* Create a strtab_entry hash table. */ | |
b89be57b | 16377 | |
9291a0cd TT |
16378 | static htab_t |
16379 | create_strtab (void) | |
16380 | { | |
16381 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
16382 | xfree, xcalloc, xfree); | |
16383 | } | |
16384 | ||
16385 | /* Add a string to the constant pool. Return the string's offset in | |
16386 | host order. */ | |
b89be57b | 16387 | |
9291a0cd TT |
16388 | static offset_type |
16389 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
16390 | { | |
16391 | void **slot; | |
16392 | struct strtab_entry entry; | |
16393 | struct strtab_entry *result; | |
16394 | ||
16395 | entry.str = str; | |
16396 | slot = htab_find_slot (table, &entry, INSERT); | |
16397 | if (*slot) | |
16398 | result = *slot; | |
16399 | else | |
16400 | { | |
16401 | result = XNEW (struct strtab_entry); | |
16402 | result->offset = obstack_object_size (cpool); | |
16403 | result->str = str; | |
16404 | obstack_grow_str0 (cpool, str); | |
16405 | *slot = result; | |
16406 | } | |
16407 | return result->offset; | |
16408 | } | |
16409 | ||
16410 | /* An entry in the symbol table. */ | |
16411 | struct symtab_index_entry | |
16412 | { | |
16413 | /* The name of the symbol. */ | |
16414 | const char *name; | |
16415 | /* The offset of the name in the constant pool. */ | |
16416 | offset_type index_offset; | |
16417 | /* A sorted vector of the indices of all the CUs that hold an object | |
16418 | of this name. */ | |
16419 | VEC (offset_type) *cu_indices; | |
16420 | }; | |
16421 | ||
16422 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
16423 | struct mapped_symtab | |
16424 | { | |
16425 | offset_type n_elements; | |
16426 | offset_type size; | |
16427 | struct symtab_index_entry **data; | |
16428 | }; | |
16429 | ||
16430 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 16431 | |
9291a0cd TT |
16432 | static hashval_t |
16433 | hash_symtab_entry (const void *e) | |
16434 | { | |
16435 | const struct symtab_index_entry *entry = e; | |
16436 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
16437 | sizeof (offset_type) * VEC_length (offset_type, | |
16438 | entry->cu_indices), | |
16439 | 0); | |
16440 | } | |
16441 | ||
16442 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 16443 | |
9291a0cd TT |
16444 | static int |
16445 | eq_symtab_entry (const void *a, const void *b) | |
16446 | { | |
16447 | const struct symtab_index_entry *ea = a; | |
16448 | const struct symtab_index_entry *eb = b; | |
16449 | int len = VEC_length (offset_type, ea->cu_indices); | |
16450 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
16451 | return 0; | |
16452 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
16453 | VEC_address (offset_type, eb->cu_indices), | |
16454 | sizeof (offset_type) * len); | |
16455 | } | |
16456 | ||
16457 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 16458 | |
9291a0cd TT |
16459 | static void |
16460 | delete_symtab_entry (void *p) | |
16461 | { | |
16462 | struct symtab_index_entry *entry = p; | |
16463 | VEC_free (offset_type, entry->cu_indices); | |
16464 | xfree (entry); | |
16465 | } | |
16466 | ||
16467 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 16468 | |
9291a0cd | 16469 | static htab_t |
3876f04e | 16470 | create_symbol_hash_table (void) |
9291a0cd TT |
16471 | { |
16472 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
16473 | delete_symtab_entry, xcalloc, xfree); | |
16474 | } | |
16475 | ||
16476 | /* Create a new mapped symtab object. */ | |
b89be57b | 16477 | |
9291a0cd TT |
16478 | static struct mapped_symtab * |
16479 | create_mapped_symtab (void) | |
16480 | { | |
16481 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
16482 | symtab->n_elements = 0; | |
16483 | symtab->size = 1024; | |
16484 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
16485 | return symtab; | |
16486 | } | |
16487 | ||
16488 | /* Destroy a mapped_symtab. */ | |
b89be57b | 16489 | |
9291a0cd TT |
16490 | static void |
16491 | cleanup_mapped_symtab (void *p) | |
16492 | { | |
16493 | struct mapped_symtab *symtab = p; | |
16494 | /* The contents of the array are freed when the other hash table is | |
16495 | destroyed. */ | |
16496 | xfree (symtab->data); | |
16497 | xfree (symtab); | |
16498 | } | |
16499 | ||
16500 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
559a7a62 JK |
16501 | the slot. |
16502 | ||
16503 | Function is used only during write_hash_table so no index format backward | |
16504 | compatibility is needed. */ | |
b89be57b | 16505 | |
9291a0cd TT |
16506 | static struct symtab_index_entry ** |
16507 | find_slot (struct mapped_symtab *symtab, const char *name) | |
16508 | { | |
559a7a62 | 16509 | offset_type index, step, hash = mapped_index_string_hash (INT_MAX, name); |
9291a0cd TT |
16510 | |
16511 | index = hash & (symtab->size - 1); | |
16512 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
16513 | ||
16514 | for (;;) | |
16515 | { | |
16516 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
16517 | return &symtab->data[index]; | |
16518 | index = (index + step) & (symtab->size - 1); | |
16519 | } | |
16520 | } | |
16521 | ||
16522 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 16523 | |
9291a0cd TT |
16524 | static void |
16525 | hash_expand (struct mapped_symtab *symtab) | |
16526 | { | |
16527 | offset_type old_size = symtab->size; | |
16528 | offset_type i; | |
16529 | struct symtab_index_entry **old_entries = symtab->data; | |
16530 | ||
16531 | symtab->size *= 2; | |
16532 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
16533 | ||
16534 | for (i = 0; i < old_size; ++i) | |
16535 | { | |
16536 | if (old_entries[i]) | |
16537 | { | |
16538 | struct symtab_index_entry **slot = find_slot (symtab, | |
16539 | old_entries[i]->name); | |
16540 | *slot = old_entries[i]; | |
16541 | } | |
16542 | } | |
16543 | ||
16544 | xfree (old_entries); | |
16545 | } | |
16546 | ||
16547 | /* Add an entry to SYMTAB. NAME is the name of the symbol. CU_INDEX | |
16548 | is the index of the CU in which the symbol appears. */ | |
b89be57b | 16549 | |
9291a0cd TT |
16550 | static void |
16551 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
16552 | offset_type cu_index) | |
16553 | { | |
16554 | struct symtab_index_entry **slot; | |
16555 | ||
16556 | ++symtab->n_elements; | |
16557 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
16558 | hash_expand (symtab); | |
16559 | ||
16560 | slot = find_slot (symtab, name); | |
16561 | if (!*slot) | |
16562 | { | |
16563 | *slot = XNEW (struct symtab_index_entry); | |
16564 | (*slot)->name = name; | |
16565 | (*slot)->cu_indices = NULL; | |
16566 | } | |
16567 | /* Don't push an index twice. Due to how we add entries we only | |
16568 | have to check the last one. */ | |
16569 | if (VEC_empty (offset_type, (*slot)->cu_indices) | |
cf31e6f9 | 16570 | || VEC_last (offset_type, (*slot)->cu_indices) != cu_index) |
9291a0cd TT |
16571 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index); |
16572 | } | |
16573 | ||
16574 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 16575 | |
9291a0cd | 16576 | static offset_type |
3876f04e | 16577 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
16578 | struct symtab_index_entry *entry) |
16579 | { | |
16580 | void **slot; | |
16581 | ||
3876f04e | 16582 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
16583 | if (!*slot) |
16584 | { | |
16585 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
16586 | offset_type val = MAYBE_SWAP (len); | |
16587 | offset_type iter; | |
16588 | int i; | |
16589 | ||
16590 | *slot = entry; | |
16591 | entry->index_offset = obstack_object_size (cpool); | |
16592 | ||
16593 | obstack_grow (cpool, &val, sizeof (val)); | |
16594 | for (i = 0; | |
16595 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
16596 | ++i) | |
16597 | { | |
16598 | val = MAYBE_SWAP (iter); | |
16599 | obstack_grow (cpool, &val, sizeof (val)); | |
16600 | } | |
16601 | } | |
16602 | else | |
16603 | { | |
16604 | struct symtab_index_entry *old_entry = *slot; | |
16605 | entry->index_offset = old_entry->index_offset; | |
16606 | entry = old_entry; | |
16607 | } | |
16608 | return entry->index_offset; | |
16609 | } | |
16610 | ||
16611 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
16612 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 16613 | |
9291a0cd TT |
16614 | static void |
16615 | write_hash_table (struct mapped_symtab *symtab, | |
16616 | struct obstack *output, struct obstack *cpool) | |
16617 | { | |
16618 | offset_type i; | |
3876f04e | 16619 | htab_t symbol_hash_table; |
9291a0cd TT |
16620 | htab_t str_table; |
16621 | ||
3876f04e | 16622 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 16623 | str_table = create_strtab (); |
3876f04e | 16624 | |
9291a0cd TT |
16625 | /* We add all the index vectors to the constant pool first, to |
16626 | ensure alignment is ok. */ | |
16627 | for (i = 0; i < symtab->size; ++i) | |
16628 | { | |
16629 | if (symtab->data[i]) | |
3876f04e | 16630 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
16631 | } |
16632 | ||
16633 | /* Now write out the hash table. */ | |
16634 | for (i = 0; i < symtab->size; ++i) | |
16635 | { | |
16636 | offset_type str_off, vec_off; | |
16637 | ||
16638 | if (symtab->data[i]) | |
16639 | { | |
16640 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
16641 | vec_off = symtab->data[i]->index_offset; | |
16642 | } | |
16643 | else | |
16644 | { | |
16645 | /* While 0 is a valid constant pool index, it is not valid | |
16646 | to have 0 for both offsets. */ | |
16647 | str_off = 0; | |
16648 | vec_off = 0; | |
16649 | } | |
16650 | ||
16651 | str_off = MAYBE_SWAP (str_off); | |
16652 | vec_off = MAYBE_SWAP (vec_off); | |
16653 | ||
16654 | obstack_grow (output, &str_off, sizeof (str_off)); | |
16655 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
16656 | } | |
16657 | ||
16658 | htab_delete (str_table); | |
3876f04e | 16659 | htab_delete (symbol_hash_table); |
9291a0cd TT |
16660 | } |
16661 | ||
0a5429f6 DE |
16662 | /* Struct to map psymtab to CU index in the index file. */ |
16663 | struct psymtab_cu_index_map | |
16664 | { | |
16665 | struct partial_symtab *psymtab; | |
16666 | unsigned int cu_index; | |
16667 | }; | |
16668 | ||
16669 | static hashval_t | |
16670 | hash_psymtab_cu_index (const void *item) | |
16671 | { | |
16672 | const struct psymtab_cu_index_map *map = item; | |
16673 | ||
16674 | return htab_hash_pointer (map->psymtab); | |
16675 | } | |
16676 | ||
16677 | static int | |
16678 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
16679 | { | |
16680 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
16681 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
16682 | ||
16683 | return lhs->psymtab == rhs->psymtab; | |
16684 | } | |
16685 | ||
16686 | /* Helper struct for building the address table. */ | |
16687 | struct addrmap_index_data | |
16688 | { | |
16689 | struct objfile *objfile; | |
16690 | struct obstack *addr_obstack; | |
16691 | htab_t cu_index_htab; | |
16692 | ||
16693 | /* Non-zero if the previous_* fields are valid. | |
16694 | We can't write an entry until we see the next entry (since it is only then | |
16695 | that we know the end of the entry). */ | |
16696 | int previous_valid; | |
16697 | /* Index of the CU in the table of all CUs in the index file. */ | |
16698 | unsigned int previous_cu_index; | |
0963b4bd | 16699 | /* Start address of the CU. */ |
0a5429f6 DE |
16700 | CORE_ADDR previous_cu_start; |
16701 | }; | |
16702 | ||
16703 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 16704 | |
9291a0cd | 16705 | static void |
0a5429f6 DE |
16706 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
16707 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 16708 | { |
0a5429f6 | 16709 | offset_type cu_index_to_write; |
9291a0cd TT |
16710 | char addr[8]; |
16711 | CORE_ADDR baseaddr; | |
16712 | ||
16713 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
16714 | ||
0a5429f6 DE |
16715 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
16716 | obstack_grow (obstack, addr, 8); | |
16717 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
16718 | obstack_grow (obstack, addr, 8); | |
16719 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
16720 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
16721 | } | |
16722 | ||
16723 | /* Worker function for traversing an addrmap to build the address table. */ | |
16724 | ||
16725 | static int | |
16726 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
16727 | { | |
16728 | struct addrmap_index_data *data = datap; | |
16729 | struct partial_symtab *pst = obj; | |
16730 | offset_type cu_index; | |
16731 | void **slot; | |
16732 | ||
16733 | if (data->previous_valid) | |
16734 | add_address_entry (data->objfile, data->addr_obstack, | |
16735 | data->previous_cu_start, start_addr, | |
16736 | data->previous_cu_index); | |
16737 | ||
16738 | data->previous_cu_start = start_addr; | |
16739 | if (pst != NULL) | |
16740 | { | |
16741 | struct psymtab_cu_index_map find_map, *map; | |
16742 | find_map.psymtab = pst; | |
16743 | map = htab_find (data->cu_index_htab, &find_map); | |
16744 | gdb_assert (map != NULL); | |
16745 | data->previous_cu_index = map->cu_index; | |
16746 | data->previous_valid = 1; | |
16747 | } | |
16748 | else | |
16749 | data->previous_valid = 0; | |
16750 | ||
16751 | return 0; | |
16752 | } | |
16753 | ||
16754 | /* Write OBJFILE's address map to OBSTACK. | |
16755 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
16756 | in the index file. */ | |
16757 | ||
16758 | static void | |
16759 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
16760 | htab_t cu_index_htab) | |
16761 | { | |
16762 | struct addrmap_index_data addrmap_index_data; | |
16763 | ||
16764 | /* When writing the address table, we have to cope with the fact that | |
16765 | the addrmap iterator only provides the start of a region; we have to | |
16766 | wait until the next invocation to get the start of the next region. */ | |
16767 | ||
16768 | addrmap_index_data.objfile = objfile; | |
16769 | addrmap_index_data.addr_obstack = obstack; | |
16770 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
16771 | addrmap_index_data.previous_valid = 0; | |
16772 | ||
16773 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
16774 | &addrmap_index_data); | |
16775 | ||
16776 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
16777 | is valid, but we should still handle it. | |
16778 | The end address is recorded as the start of the next region, but that | |
16779 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
16780 | anyway. */ | |
16781 | if (addrmap_index_data.previous_valid) | |
16782 | add_address_entry (objfile, obstack, | |
16783 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
16784 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
16785 | } |
16786 | ||
16787 | /* Add a list of partial symbols to SYMTAB. */ | |
b89be57b | 16788 | |
9291a0cd TT |
16789 | static void |
16790 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 16791 | htab_t psyms_seen, |
9291a0cd TT |
16792 | struct partial_symbol **psymp, |
16793 | int count, | |
987d643c TT |
16794 | offset_type cu_index, |
16795 | int is_static) | |
9291a0cd TT |
16796 | { |
16797 | for (; count-- > 0; ++psymp) | |
16798 | { | |
987d643c TT |
16799 | void **slot, *lookup; |
16800 | ||
9291a0cd TT |
16801 | if (SYMBOL_LANGUAGE (*psymp) == language_ada) |
16802 | error (_("Ada is not currently supported by the index")); | |
987d643c TT |
16803 | |
16804 | /* We only want to add a given psymbol once. However, we also | |
16805 | want to account for whether it is global or static. So, we | |
16806 | may add it twice, using slightly different values. */ | |
16807 | if (is_static) | |
16808 | { | |
16809 | uintptr_t val = 1 | (uintptr_t) *psymp; | |
16810 | ||
16811 | lookup = (void *) val; | |
16812 | } | |
16813 | else | |
16814 | lookup = *psymp; | |
16815 | ||
16816 | /* Only add a given psymbol once. */ | |
16817 | slot = htab_find_slot (psyms_seen, lookup, INSERT); | |
16818 | if (!*slot) | |
16819 | { | |
16820 | *slot = lookup; | |
bb2f58dc | 16821 | add_index_entry (symtab, SYMBOL_SEARCH_NAME (*psymp), cu_index); |
987d643c | 16822 | } |
9291a0cd TT |
16823 | } |
16824 | } | |
16825 | ||
16826 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
16827 | exception if there is an error. */ | |
b89be57b | 16828 | |
9291a0cd TT |
16829 | static void |
16830 | write_obstack (FILE *file, struct obstack *obstack) | |
16831 | { | |
16832 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
16833 | file) | |
16834 | != obstack_object_size (obstack)) | |
16835 | error (_("couldn't data write to file")); | |
16836 | } | |
16837 | ||
16838 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 16839 | |
9291a0cd TT |
16840 | static void |
16841 | unlink_if_set (void *p) | |
16842 | { | |
16843 | char **filename = p; | |
16844 | if (*filename) | |
16845 | unlink (*filename); | |
16846 | } | |
16847 | ||
1fd400ff TT |
16848 | /* A helper struct used when iterating over debug_types. */ |
16849 | struct signatured_type_index_data | |
16850 | { | |
16851 | struct objfile *objfile; | |
16852 | struct mapped_symtab *symtab; | |
16853 | struct obstack *types_list; | |
987d643c | 16854 | htab_t psyms_seen; |
1fd400ff TT |
16855 | int cu_index; |
16856 | }; | |
16857 | ||
16858 | /* A helper function that writes a single signatured_type to an | |
16859 | obstack. */ | |
b89be57b | 16860 | |
1fd400ff TT |
16861 | static int |
16862 | write_one_signatured_type (void **slot, void *d) | |
16863 | { | |
16864 | struct signatured_type_index_data *info = d; | |
16865 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
16866 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
16867 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
16868 | gdb_byte val[8]; |
16869 | ||
16870 | write_psymbols (info->symtab, | |
987d643c | 16871 | info->psyms_seen, |
3e43a32a MS |
16872 | info->objfile->global_psymbols.list |
16873 | + psymtab->globals_offset, | |
987d643c TT |
16874 | psymtab->n_global_syms, info->cu_index, |
16875 | 0); | |
1fd400ff | 16876 | write_psymbols (info->symtab, |
987d643c | 16877 | info->psyms_seen, |
3e43a32a MS |
16878 | info->objfile->static_psymbols.list |
16879 | + psymtab->statics_offset, | |
987d643c TT |
16880 | psymtab->n_static_syms, info->cu_index, |
16881 | 1); | |
1fd400ff | 16882 | |
b3c8eb43 | 16883 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->per_cu.offset); |
1fd400ff TT |
16884 | obstack_grow (info->types_list, val, 8); |
16885 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->type_offset); | |
16886 | obstack_grow (info->types_list, val, 8); | |
16887 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
16888 | obstack_grow (info->types_list, val, 8); | |
16889 | ||
16890 | ++info->cu_index; | |
16891 | ||
16892 | return 1; | |
16893 | } | |
16894 | ||
9291a0cd | 16895 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 16896 | |
9291a0cd TT |
16897 | static void |
16898 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
16899 | { | |
16900 | struct cleanup *cleanup; | |
16901 | char *filename, *cleanup_filename; | |
1fd400ff TT |
16902 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
16903 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
16904 | int i; |
16905 | FILE *out_file; | |
16906 | struct mapped_symtab *symtab; | |
16907 | offset_type val, size_of_contents, total_len; | |
16908 | struct stat st; | |
16909 | char buf[8]; | |
987d643c | 16910 | htab_t psyms_seen; |
0a5429f6 DE |
16911 | htab_t cu_index_htab; |
16912 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd | 16913 | |
b4f2f049 | 16914 | if (!objfile->psymtabs || !objfile->psymtabs_addrmap) |
9291a0cd | 16915 | return; |
b4f2f049 | 16916 | |
9291a0cd TT |
16917 | if (dwarf2_per_objfile->using_index) |
16918 | error (_("Cannot use an index to create the index")); | |
16919 | ||
8b70b953 TT |
16920 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) > 1) |
16921 | error (_("Cannot make an index when the file has multiple .debug_types sections")); | |
16922 | ||
9291a0cd | 16923 | if (stat (objfile->name, &st) < 0) |
7e17e088 | 16924 | perror_with_name (objfile->name); |
9291a0cd TT |
16925 | |
16926 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
16927 | INDEX_SUFFIX, (char *) NULL); | |
16928 | cleanup = make_cleanup (xfree, filename); | |
16929 | ||
16930 | out_file = fopen (filename, "wb"); | |
16931 | if (!out_file) | |
16932 | error (_("Can't open `%s' for writing"), filename); | |
16933 | ||
16934 | cleanup_filename = filename; | |
16935 | make_cleanup (unlink_if_set, &cleanup_filename); | |
16936 | ||
16937 | symtab = create_mapped_symtab (); | |
16938 | make_cleanup (cleanup_mapped_symtab, symtab); | |
16939 | ||
16940 | obstack_init (&addr_obstack); | |
16941 | make_cleanup_obstack_free (&addr_obstack); | |
16942 | ||
16943 | obstack_init (&cu_list); | |
16944 | make_cleanup_obstack_free (&cu_list); | |
16945 | ||
1fd400ff TT |
16946 | obstack_init (&types_cu_list); |
16947 | make_cleanup_obstack_free (&types_cu_list); | |
16948 | ||
987d643c TT |
16949 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
16950 | NULL, xcalloc, xfree); | |
96408a79 | 16951 | make_cleanup_htab_delete (psyms_seen); |
987d643c | 16952 | |
0a5429f6 DE |
16953 | /* While we're scanning CU's create a table that maps a psymtab pointer |
16954 | (which is what addrmap records) to its index (which is what is recorded | |
16955 | in the index file). This will later be needed to write the address | |
16956 | table. */ | |
16957 | cu_index_htab = htab_create_alloc (100, | |
16958 | hash_psymtab_cu_index, | |
16959 | eq_psymtab_cu_index, | |
16960 | NULL, xcalloc, xfree); | |
96408a79 | 16961 | make_cleanup_htab_delete (cu_index_htab); |
0a5429f6 DE |
16962 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) |
16963 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
16964 | * dwarf2_per_objfile->n_comp_units); | |
16965 | make_cleanup (xfree, psymtab_cu_index_map); | |
16966 | ||
16967 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
16968 | work here. Also, the debug_types entries do not appear in |
16969 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
16970 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
16971 | { | |
3e43a32a MS |
16972 | struct dwarf2_per_cu_data *per_cu |
16973 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 16974 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 16975 | gdb_byte val[8]; |
0a5429f6 DE |
16976 | struct psymtab_cu_index_map *map; |
16977 | void **slot; | |
9291a0cd TT |
16978 | |
16979 | write_psymbols (symtab, | |
987d643c | 16980 | psyms_seen, |
9291a0cd | 16981 | objfile->global_psymbols.list + psymtab->globals_offset, |
987d643c TT |
16982 | psymtab->n_global_syms, i, |
16983 | 0); | |
9291a0cd | 16984 | write_psymbols (symtab, |
987d643c | 16985 | psyms_seen, |
9291a0cd | 16986 | objfile->static_psymbols.list + psymtab->statics_offset, |
987d643c TT |
16987 | psymtab->n_static_syms, i, |
16988 | 1); | |
9291a0cd | 16989 | |
0a5429f6 DE |
16990 | map = &psymtab_cu_index_map[i]; |
16991 | map->psymtab = psymtab; | |
16992 | map->cu_index = i; | |
16993 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
16994 | gdb_assert (slot != NULL); | |
16995 | gdb_assert (*slot == NULL); | |
16996 | *slot = map; | |
9291a0cd | 16997 | |
e254ef6a | 16998 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->offset); |
9291a0cd | 16999 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 17000 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
17001 | obstack_grow (&cu_list, val, 8); |
17002 | } | |
17003 | ||
0a5429f6 DE |
17004 | /* Dump the address map. */ |
17005 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
17006 | ||
1fd400ff TT |
17007 | /* Write out the .debug_type entries, if any. */ |
17008 | if (dwarf2_per_objfile->signatured_types) | |
17009 | { | |
17010 | struct signatured_type_index_data sig_data; | |
17011 | ||
17012 | sig_data.objfile = objfile; | |
17013 | sig_data.symtab = symtab; | |
17014 | sig_data.types_list = &types_cu_list; | |
987d643c | 17015 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
17016 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
17017 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
17018 | write_one_signatured_type, &sig_data); | |
17019 | } | |
17020 | ||
9291a0cd TT |
17021 | obstack_init (&constant_pool); |
17022 | make_cleanup_obstack_free (&constant_pool); | |
17023 | obstack_init (&symtab_obstack); | |
17024 | make_cleanup_obstack_free (&symtab_obstack); | |
17025 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
17026 | ||
17027 | obstack_init (&contents); | |
17028 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 17029 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
17030 | total_len = size_of_contents; |
17031 | ||
17032 | /* The version number. */ | |
559a7a62 | 17033 | val = MAYBE_SWAP (5); |
9291a0cd TT |
17034 | obstack_grow (&contents, &val, sizeof (val)); |
17035 | ||
17036 | /* The offset of the CU list from the start of the file. */ | |
17037 | val = MAYBE_SWAP (total_len); | |
17038 | obstack_grow (&contents, &val, sizeof (val)); | |
17039 | total_len += obstack_object_size (&cu_list); | |
17040 | ||
1fd400ff TT |
17041 | /* The offset of the types CU list from the start of the file. */ |
17042 | val = MAYBE_SWAP (total_len); | |
17043 | obstack_grow (&contents, &val, sizeof (val)); | |
17044 | total_len += obstack_object_size (&types_cu_list); | |
17045 | ||
9291a0cd TT |
17046 | /* The offset of the address table from the start of the file. */ |
17047 | val = MAYBE_SWAP (total_len); | |
17048 | obstack_grow (&contents, &val, sizeof (val)); | |
17049 | total_len += obstack_object_size (&addr_obstack); | |
17050 | ||
17051 | /* The offset of the symbol table from the start of the file. */ | |
17052 | val = MAYBE_SWAP (total_len); | |
17053 | obstack_grow (&contents, &val, sizeof (val)); | |
17054 | total_len += obstack_object_size (&symtab_obstack); | |
17055 | ||
17056 | /* The offset of the constant pool from the start of the file. */ | |
17057 | val = MAYBE_SWAP (total_len); | |
17058 | obstack_grow (&contents, &val, sizeof (val)); | |
17059 | total_len += obstack_object_size (&constant_pool); | |
17060 | ||
17061 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
17062 | ||
17063 | write_obstack (out_file, &contents); | |
17064 | write_obstack (out_file, &cu_list); | |
1fd400ff | 17065 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
17066 | write_obstack (out_file, &addr_obstack); |
17067 | write_obstack (out_file, &symtab_obstack); | |
17068 | write_obstack (out_file, &constant_pool); | |
17069 | ||
17070 | fclose (out_file); | |
17071 | ||
17072 | /* We want to keep the file, so we set cleanup_filename to NULL | |
17073 | here. See unlink_if_set. */ | |
17074 | cleanup_filename = NULL; | |
17075 | ||
17076 | do_cleanups (cleanup); | |
17077 | } | |
17078 | ||
90476074 TT |
17079 | /* Implementation of the `save gdb-index' command. |
17080 | ||
17081 | Note that the file format used by this command is documented in the | |
17082 | GDB manual. Any changes here must be documented there. */ | |
11570e71 | 17083 | |
9291a0cd TT |
17084 | static void |
17085 | save_gdb_index_command (char *arg, int from_tty) | |
17086 | { | |
17087 | struct objfile *objfile; | |
17088 | ||
17089 | if (!arg || !*arg) | |
96d19272 | 17090 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
17091 | |
17092 | ALL_OBJFILES (objfile) | |
17093 | { | |
17094 | struct stat st; | |
17095 | ||
17096 | /* If the objfile does not correspond to an actual file, skip it. */ | |
17097 | if (stat (objfile->name, &st) < 0) | |
17098 | continue; | |
17099 | ||
17100 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
17101 | if (dwarf2_per_objfile) | |
17102 | { | |
17103 | volatile struct gdb_exception except; | |
17104 | ||
17105 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
17106 | { | |
17107 | write_psymtabs_to_index (objfile, arg); | |
17108 | } | |
17109 | if (except.reason < 0) | |
17110 | exception_fprintf (gdb_stderr, except, | |
17111 | _("Error while writing index for `%s': "), | |
17112 | objfile->name); | |
17113 | } | |
17114 | } | |
dce234bc PP |
17115 | } |
17116 | ||
9291a0cd TT |
17117 | \f |
17118 | ||
9eae7c52 TT |
17119 | int dwarf2_always_disassemble; |
17120 | ||
17121 | static void | |
17122 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
17123 | struct cmd_list_element *c, const char *value) | |
17124 | { | |
3e43a32a MS |
17125 | fprintf_filtered (file, |
17126 | _("Whether to always disassemble " | |
17127 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
17128 | value); |
17129 | } | |
17130 | ||
900e11f9 JK |
17131 | static void |
17132 | show_check_physname (struct ui_file *file, int from_tty, | |
17133 | struct cmd_list_element *c, const char *value) | |
17134 | { | |
17135 | fprintf_filtered (file, | |
17136 | _("Whether to check \"physname\" is %s.\n"), | |
17137 | value); | |
17138 | } | |
17139 | ||
6502dd73 DJ |
17140 | void _initialize_dwarf2_read (void); |
17141 | ||
17142 | void | |
17143 | _initialize_dwarf2_read (void) | |
17144 | { | |
96d19272 JK |
17145 | struct cmd_list_element *c; |
17146 | ||
dce234bc | 17147 | dwarf2_objfile_data_key |
c1bd65d0 | 17148 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 17149 | |
1bedd215 AC |
17150 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
17151 | Set DWARF 2 specific variables.\n\ | |
17152 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
17153 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
17154 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
17155 | ||
1bedd215 AC |
17156 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
17157 | Show DWARF 2 specific variables\n\ | |
17158 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
17159 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
17160 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
17161 | ||
17162 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
17163 | &dwarf2_max_cache_age, _("\ |
17164 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
17165 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
17166 | A higher limit means that cached compilation units will be stored\n\ | |
17167 | in memory longer, and more total memory will be used. Zero disables\n\ | |
17168 | caching, which can slow down startup."), | |
2c5b56ce | 17169 | NULL, |
920d2a44 | 17170 | show_dwarf2_max_cache_age, |
2c5b56ce | 17171 | &set_dwarf2_cmdlist, |
ae038cb0 | 17172 | &show_dwarf2_cmdlist); |
d97bc12b | 17173 | |
9eae7c52 TT |
17174 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
17175 | &dwarf2_always_disassemble, _("\ | |
17176 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
17177 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
17178 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
17179 | syntax. When disabled, expressions will be printed in a more\n\ | |
17180 | conversational style, when possible."), | |
17181 | NULL, | |
17182 | show_dwarf2_always_disassemble, | |
17183 | &set_dwarf2_cmdlist, | |
17184 | &show_dwarf2_cmdlist); | |
17185 | ||
d97bc12b DE |
17186 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
17187 | Set debugging of the dwarf2 DIE reader."), _("\ | |
17188 | Show debugging of the dwarf2 DIE reader."), _("\ | |
17189 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
17190 | The value is the maximum depth to print."), | |
17191 | NULL, | |
17192 | NULL, | |
17193 | &setdebuglist, &showdebuglist); | |
9291a0cd | 17194 | |
900e11f9 JK |
17195 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
17196 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
17197 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
17198 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
17199 | the demangler."), | |
17200 | NULL, show_check_physname, | |
17201 | &setdebuglist, &showdebuglist); | |
17202 | ||
96d19272 | 17203 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 17204 | _("\ |
fc1a9d6e | 17205 | Save a gdb-index file.\n\ |
11570e71 | 17206 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
17207 | &save_cmdlist); |
17208 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 17209 | } |