Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
6aba47ca | 3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
7b6bb8da | 4 | 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
0fb0cc75 | 5 | Free Software Foundation, Inc. |
c906108c SS |
6 | |
7 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
8 | Inc. with support from Florida State University (under contract | |
9 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
10 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
11 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 12 | support. |
c906108c | 13 | |
c5aa993b | 14 | This file is part of GDB. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is free software; you can redistribute it and/or modify |
17 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
18 | the Free Software Foundation; either version 3 of the License, or |
19 | (at your option) any later version. | |
c906108c | 20 | |
a9762ec7 JB |
21 | This program is distributed in the hope that it will be useful, |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
c906108c | 25 | |
c5aa993b | 26 | You should have received a copy of the GNU General Public License |
a9762ec7 | 27 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
28 | |
29 | #include "defs.h" | |
30 | #include "bfd.h" | |
c906108c SS |
31 | #include "symtab.h" |
32 | #include "gdbtypes.h" | |
c906108c | 33 | #include "objfiles.h" |
fa8f86ff | 34 | #include "dwarf2.h" |
c906108c SS |
35 | #include "buildsym.h" |
36 | #include "demangle.h" | |
37 | #include "expression.h" | |
d5166ae1 | 38 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 39 | #include "macrotab.h" |
c906108c SS |
40 | #include "language.h" |
41 | #include "complaints.h" | |
357e46e7 | 42 | #include "bcache.h" |
4c2df51b DJ |
43 | #include "dwarf2expr.h" |
44 | #include "dwarf2loc.h" | |
9219021c | 45 | #include "cp-support.h" |
72bf9492 | 46 | #include "hashtab.h" |
ae038cb0 DJ |
47 | #include "command.h" |
48 | #include "gdbcmd.h" | |
edb3359d | 49 | #include "block.h" |
ff013f42 | 50 | #include "addrmap.h" |
94af9270 KS |
51 | #include "typeprint.h" |
52 | #include "jv-lang.h" | |
ccefe4c4 | 53 | #include "psympriv.h" |
9291a0cd TT |
54 | #include "exceptions.h" |
55 | #include "gdb_stat.h" | |
96d19272 | 56 | #include "completer.h" |
34eaf542 | 57 | #include "vec.h" |
98bfdba5 PA |
58 | #include "c-lang.h" |
59 | #include "valprint.h" | |
4c2df51b | 60 | |
c906108c SS |
61 | #include <fcntl.h> |
62 | #include "gdb_string.h" | |
4bdf3d34 | 63 | #include "gdb_assert.h" |
c906108c | 64 | #include <sys/types.h> |
233a11ab CS |
65 | #ifdef HAVE_ZLIB_H |
66 | #include <zlib.h> | |
67 | #endif | |
dce234bc PP |
68 | #ifdef HAVE_MMAP |
69 | #include <sys/mman.h> | |
85d9bd0e TT |
70 | #ifndef MAP_FAILED |
71 | #define MAP_FAILED ((void *) -1) | |
72 | #endif | |
dce234bc | 73 | #endif |
d8151005 | 74 | |
34eaf542 TT |
75 | typedef struct symbol *symbolp; |
76 | DEF_VEC_P (symbolp); | |
77 | ||
107d2387 | 78 | #if 0 |
357e46e7 | 79 | /* .debug_info header for a compilation unit |
c906108c SS |
80 | Because of alignment constraints, this structure has padding and cannot |
81 | be mapped directly onto the beginning of the .debug_info section. */ | |
82 | typedef struct comp_unit_header | |
83 | { | |
84 | unsigned int length; /* length of the .debug_info | |
85 | contribution */ | |
86 | unsigned short version; /* version number -- 2 for DWARF | |
87 | version 2 */ | |
88 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
89 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
90 | } | |
91 | _COMP_UNIT_HEADER; | |
92 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 93 | #endif |
c906108c | 94 | |
c906108c SS |
95 | /* .debug_line statement program prologue |
96 | Because of alignment constraints, this structure has padding and cannot | |
97 | be mapped directly onto the beginning of the .debug_info section. */ | |
98 | typedef struct statement_prologue | |
99 | { | |
100 | unsigned int total_length; /* byte length of the statement | |
101 | information */ | |
102 | unsigned short version; /* version number -- 2 for DWARF | |
103 | version 2 */ | |
104 | unsigned int prologue_length; /* # bytes between prologue & | |
105 | stmt program */ | |
106 | unsigned char minimum_instruction_length; /* byte size of | |
107 | smallest instr */ | |
108 | unsigned char default_is_stmt; /* initial value of is_stmt | |
109 | register */ | |
110 | char line_base; | |
111 | unsigned char line_range; | |
112 | unsigned char opcode_base; /* number assigned to first special | |
113 | opcode */ | |
114 | unsigned char *standard_opcode_lengths; | |
115 | } | |
116 | _STATEMENT_PROLOGUE; | |
117 | ||
d97bc12b DE |
118 | /* When non-zero, dump DIEs after they are read in. */ |
119 | static int dwarf2_die_debug = 0; | |
120 | ||
dce234bc PP |
121 | static int pagesize; |
122 | ||
df8a16a1 DJ |
123 | /* When set, the file that we're processing is known to have debugging |
124 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
125 | but later versions do. */ | |
126 | ||
127 | static int processing_has_namespace_info; | |
128 | ||
6502dd73 DJ |
129 | static const struct objfile_data *dwarf2_objfile_data_key; |
130 | ||
dce234bc PP |
131 | struct dwarf2_section_info |
132 | { | |
133 | asection *asection; | |
134 | gdb_byte *buffer; | |
135 | bfd_size_type size; | |
136 | int was_mmapped; | |
be391dca TT |
137 | /* True if we have tried to read this section. */ |
138 | int readin; | |
dce234bc PP |
139 | }; |
140 | ||
9291a0cd TT |
141 | /* All offsets in the index are of this type. It must be |
142 | architecture-independent. */ | |
143 | typedef uint32_t offset_type; | |
144 | ||
145 | DEF_VEC_I (offset_type); | |
146 | ||
147 | /* A description of the mapped index. The file format is described in | |
148 | a comment by the code that writes the index. */ | |
149 | struct mapped_index | |
150 | { | |
151 | /* The total length of the buffer. */ | |
152 | off_t total_size; | |
153 | /* A pointer to the address table data. */ | |
154 | const gdb_byte *address_table; | |
155 | /* Size of the address table data in bytes. */ | |
156 | offset_type address_table_size; | |
3876f04e DE |
157 | /* The symbol table, implemented as a hash table. */ |
158 | const offset_type *symbol_table; | |
9291a0cd | 159 | /* Size in slots, each slot is 2 offset_types. */ |
3876f04e | 160 | offset_type symbol_table_slots; |
9291a0cd TT |
161 | /* A pointer to the constant pool. */ |
162 | const char *constant_pool; | |
163 | }; | |
164 | ||
6502dd73 DJ |
165 | struct dwarf2_per_objfile |
166 | { | |
dce234bc PP |
167 | struct dwarf2_section_info info; |
168 | struct dwarf2_section_info abbrev; | |
169 | struct dwarf2_section_info line; | |
dce234bc PP |
170 | struct dwarf2_section_info loc; |
171 | struct dwarf2_section_info macinfo; | |
172 | struct dwarf2_section_info str; | |
173 | struct dwarf2_section_info ranges; | |
348e048f | 174 | struct dwarf2_section_info types; |
dce234bc PP |
175 | struct dwarf2_section_info frame; |
176 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 177 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 178 | |
be391dca TT |
179 | /* Back link. */ |
180 | struct objfile *objfile; | |
181 | ||
10b3939b DJ |
182 | /* A list of all the compilation units. This is used to locate |
183 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
184 | struct dwarf2_per_cu_data **all_comp_units; |
185 | ||
186 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
187 | int n_comp_units; | |
188 | ||
1fd400ff TT |
189 | /* The number of .debug_types-related CUs. */ |
190 | int n_type_comp_units; | |
191 | ||
192 | /* The .debug_types-related CUs. */ | |
193 | struct dwarf2_per_cu_data **type_comp_units; | |
194 | ||
ae038cb0 DJ |
195 | /* A chain of compilation units that are currently read in, so that |
196 | they can be freed later. */ | |
197 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 198 | |
348e048f DE |
199 | /* A table mapping .debug_types signatures to its signatured_type entry. |
200 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
201 | htab_t signatured_types; | |
202 | ||
72dca2f5 FR |
203 | /* A flag indicating wether this objfile has a section loaded at a |
204 | VMA of 0. */ | |
205 | int has_section_at_zero; | |
9291a0cd | 206 | |
ae2de4f8 DE |
207 | /* True if we are using the mapped index, |
208 | or we are faking it for OBJF_READNOW's sake. */ | |
9291a0cd TT |
209 | unsigned char using_index; |
210 | ||
ae2de4f8 | 211 | /* The mapped index, or NULL if .gdb_index is missing or not being used. */ |
9291a0cd | 212 | struct mapped_index *index_table; |
98bfdba5 | 213 | |
7b9f3c50 DE |
214 | /* When using index_table, this keeps track of all quick_file_names entries. |
215 | TUs can share line table entries with CUs or other TUs, and there can be | |
216 | a lot more TUs than unique line tables, so we maintain a separate table | |
217 | of all line table entries to support the sharing. */ | |
218 | htab_t quick_file_names_table; | |
219 | ||
98bfdba5 PA |
220 | /* Set during partial symbol reading, to prevent queueing of full |
221 | symbols. */ | |
222 | int reading_partial_symbols; | |
673bfd45 DE |
223 | |
224 | /* Table mapping type .debug_info DIE offsets to types. | |
225 | This is NULL if not allocated yet. | |
226 | It (currently) makes sense to allocate debug_types_type_hash lazily. | |
227 | To keep things simple we allocate both lazily. */ | |
228 | htab_t debug_info_type_hash; | |
229 | ||
230 | /* Table mapping type .debug_types DIE offsets to types. | |
231 | This is NULL if not allocated yet. */ | |
232 | htab_t debug_types_type_hash; | |
6502dd73 DJ |
233 | }; |
234 | ||
235 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c SS |
236 | |
237 | /* names of the debugging sections */ | |
238 | ||
233a11ab CS |
239 | /* Note that if the debugging section has been compressed, it might |
240 | have a name like .zdebug_info. */ | |
241 | ||
242 | #define INFO_SECTION "debug_info" | |
243 | #define ABBREV_SECTION "debug_abbrev" | |
244 | #define LINE_SECTION "debug_line" | |
233a11ab CS |
245 | #define LOC_SECTION "debug_loc" |
246 | #define MACINFO_SECTION "debug_macinfo" | |
247 | #define STR_SECTION "debug_str" | |
248 | #define RANGES_SECTION "debug_ranges" | |
348e048f | 249 | #define TYPES_SECTION "debug_types" |
233a11ab CS |
250 | #define FRAME_SECTION "debug_frame" |
251 | #define EH_FRAME_SECTION "eh_frame" | |
9291a0cd | 252 | #define GDB_INDEX_SECTION "gdb_index" |
c906108c SS |
253 | |
254 | /* local data types */ | |
255 | ||
0963b4bd | 256 | /* We hold several abbreviation tables in memory at the same time. */ |
57349743 JB |
257 | #ifndef ABBREV_HASH_SIZE |
258 | #define ABBREV_HASH_SIZE 121 | |
259 | #endif | |
260 | ||
107d2387 AC |
261 | /* The data in a compilation unit header, after target2host |
262 | translation, looks like this. */ | |
c906108c | 263 | struct comp_unit_head |
a738430d | 264 | { |
c764a876 | 265 | unsigned int length; |
a738430d | 266 | short version; |
a738430d MK |
267 | unsigned char addr_size; |
268 | unsigned char signed_addr_p; | |
9cbfa09e | 269 | unsigned int abbrev_offset; |
57349743 | 270 | |
a738430d MK |
271 | /* Size of file offsets; either 4 or 8. */ |
272 | unsigned int offset_size; | |
57349743 | 273 | |
a738430d MK |
274 | /* Size of the length field; either 4 or 12. */ |
275 | unsigned int initial_length_size; | |
57349743 | 276 | |
a738430d MK |
277 | /* Offset to the first byte of this compilation unit header in the |
278 | .debug_info section, for resolving relative reference dies. */ | |
279 | unsigned int offset; | |
57349743 | 280 | |
d00adf39 DE |
281 | /* Offset to first die in this cu from the start of the cu. |
282 | This will be the first byte following the compilation unit header. */ | |
283 | unsigned int first_die_offset; | |
a738430d | 284 | }; |
c906108c | 285 | |
3da10d80 KS |
286 | /* Type used for delaying computation of method physnames. |
287 | See comments for compute_delayed_physnames. */ | |
288 | struct delayed_method_info | |
289 | { | |
290 | /* The type to which the method is attached, i.e., its parent class. */ | |
291 | struct type *type; | |
292 | ||
293 | /* The index of the method in the type's function fieldlists. */ | |
294 | int fnfield_index; | |
295 | ||
296 | /* The index of the method in the fieldlist. */ | |
297 | int index; | |
298 | ||
299 | /* The name of the DIE. */ | |
300 | const char *name; | |
301 | ||
302 | /* The DIE associated with this method. */ | |
303 | struct die_info *die; | |
304 | }; | |
305 | ||
306 | typedef struct delayed_method_info delayed_method_info; | |
307 | DEF_VEC_O (delayed_method_info); | |
308 | ||
e7c27a73 DJ |
309 | /* Internal state when decoding a particular compilation unit. */ |
310 | struct dwarf2_cu | |
311 | { | |
312 | /* The objfile containing this compilation unit. */ | |
313 | struct objfile *objfile; | |
314 | ||
d00adf39 | 315 | /* The header of the compilation unit. */ |
e7c27a73 | 316 | struct comp_unit_head header; |
e142c38c | 317 | |
d00adf39 DE |
318 | /* Base address of this compilation unit. */ |
319 | CORE_ADDR base_address; | |
320 | ||
321 | /* Non-zero if base_address has been set. */ | |
322 | int base_known; | |
323 | ||
e142c38c DJ |
324 | struct function_range *first_fn, *last_fn, *cached_fn; |
325 | ||
326 | /* The language we are debugging. */ | |
327 | enum language language; | |
328 | const struct language_defn *language_defn; | |
329 | ||
b0f35d58 DL |
330 | const char *producer; |
331 | ||
e142c38c DJ |
332 | /* The generic symbol table building routines have separate lists for |
333 | file scope symbols and all all other scopes (local scopes). So | |
334 | we need to select the right one to pass to add_symbol_to_list(). | |
335 | We do it by keeping a pointer to the correct list in list_in_scope. | |
336 | ||
337 | FIXME: The original dwarf code just treated the file scope as the | |
338 | first local scope, and all other local scopes as nested local | |
339 | scopes, and worked fine. Check to see if we really need to | |
340 | distinguish these in buildsym.c. */ | |
341 | struct pending **list_in_scope; | |
342 | ||
f3dd6933 DJ |
343 | /* DWARF abbreviation table associated with this compilation unit. */ |
344 | struct abbrev_info **dwarf2_abbrevs; | |
345 | ||
346 | /* Storage for the abbrev table. */ | |
347 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
348 | |
349 | /* Hash table holding all the loaded partial DIEs. */ | |
350 | htab_t partial_dies; | |
351 | ||
352 | /* Storage for things with the same lifetime as this read-in compilation | |
353 | unit, including partial DIEs. */ | |
354 | struct obstack comp_unit_obstack; | |
355 | ||
ae038cb0 DJ |
356 | /* When multiple dwarf2_cu structures are living in memory, this field |
357 | chains them all together, so that they can be released efficiently. | |
358 | We will probably also want a generation counter so that most-recently-used | |
359 | compilation units are cached... */ | |
360 | struct dwarf2_per_cu_data *read_in_chain; | |
361 | ||
362 | /* Backchain to our per_cu entry if the tree has been built. */ | |
363 | struct dwarf2_per_cu_data *per_cu; | |
364 | ||
365 | /* How many compilation units ago was this CU last referenced? */ | |
366 | int last_used; | |
367 | ||
10b3939b | 368 | /* A hash table of die offsets for following references. */ |
51545339 | 369 | htab_t die_hash; |
10b3939b DJ |
370 | |
371 | /* Full DIEs if read in. */ | |
372 | struct die_info *dies; | |
373 | ||
374 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
375 | units referenced by this one. Only set during full symbol processing; | |
376 | partial symbol tables do not have dependencies. */ | |
377 | htab_t dependencies; | |
378 | ||
cb1df416 DJ |
379 | /* Header data from the line table, during full symbol processing. */ |
380 | struct line_header *line_header; | |
381 | ||
3da10d80 KS |
382 | /* A list of methods which need to have physnames computed |
383 | after all type information has been read. */ | |
384 | VEC (delayed_method_info) *method_list; | |
385 | ||
ae038cb0 DJ |
386 | /* Mark used when releasing cached dies. */ |
387 | unsigned int mark : 1; | |
388 | ||
389 | /* This flag will be set if this compilation unit might include | |
390 | inter-compilation-unit references. */ | |
391 | unsigned int has_form_ref_addr : 1; | |
392 | ||
72bf9492 DJ |
393 | /* This flag will be set if this compilation unit includes any |
394 | DW_TAG_namespace DIEs. If we know that there are explicit | |
395 | DIEs for namespaces, we don't need to try to infer them | |
396 | from mangled names. */ | |
397 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
398 | }; |
399 | ||
10b3939b DJ |
400 | /* Persistent data held for a compilation unit, even when not |
401 | processing it. We put a pointer to this structure in the | |
402 | read_symtab_private field of the psymtab. If we encounter | |
403 | inter-compilation-unit references, we also maintain a sorted | |
404 | list of all compilation units. */ | |
405 | ||
ae038cb0 DJ |
406 | struct dwarf2_per_cu_data |
407 | { | |
348e048f | 408 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 409 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
410 | - if it doesn't, GDB will fall over anyway. |
411 | NOTE: Unlike comp_unit_head.length, this length includes | |
412 | initial_length_size. */ | |
c764a876 | 413 | unsigned int offset; |
348e048f | 414 | unsigned int length : 29; |
ae038cb0 DJ |
415 | |
416 | /* Flag indicating this compilation unit will be read in before | |
417 | any of the current compilation units are processed. */ | |
c764a876 | 418 | unsigned int queued : 1; |
ae038cb0 | 419 | |
5afb4e99 DJ |
420 | /* This flag will be set if we need to load absolutely all DIEs |
421 | for this compilation unit, instead of just the ones we think | |
422 | are interesting. It gets set if we look for a DIE in the | |
423 | hash table and don't find it. */ | |
424 | unsigned int load_all_dies : 1; | |
425 | ||
348e048f DE |
426 | /* Non-zero if this CU is from .debug_types. |
427 | Otherwise it's from .debug_info. */ | |
428 | unsigned int from_debug_types : 1; | |
429 | ||
17ea53c3 JK |
430 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
431 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 432 | struct dwarf2_cu *cu; |
1c379e20 | 433 | |
9291a0cd TT |
434 | /* The corresponding objfile. */ |
435 | struct objfile *objfile; | |
436 | ||
437 | /* When using partial symbol tables, the 'psymtab' field is active. | |
438 | Otherwise the 'quick' field is active. */ | |
439 | union | |
440 | { | |
441 | /* The partial symbol table associated with this compilation unit, | |
442 | or NULL for partial units (which do not have an associated | |
443 | symtab). */ | |
444 | struct partial_symtab *psymtab; | |
445 | ||
446 | /* Data needed by the "quick" functions. */ | |
447 | struct dwarf2_per_cu_quick_data *quick; | |
448 | } v; | |
ae038cb0 DJ |
449 | }; |
450 | ||
348e048f DE |
451 | /* Entry in the signatured_types hash table. */ |
452 | ||
453 | struct signatured_type | |
454 | { | |
455 | ULONGEST signature; | |
456 | ||
457 | /* Offset in .debug_types of the TU (type_unit) for this type. */ | |
458 | unsigned int offset; | |
459 | ||
460 | /* Offset in .debug_types of the type defined by this TU. */ | |
461 | unsigned int type_offset; | |
462 | ||
463 | /* The CU(/TU) of this type. */ | |
464 | struct dwarf2_per_cu_data per_cu; | |
465 | }; | |
466 | ||
0963b4bd MS |
467 | /* Struct used to pass misc. parameters to read_die_and_children, et |
468 | al. which are used for both .debug_info and .debug_types dies. | |
469 | All parameters here are unchanging for the life of the call. This | |
470 | struct exists to abstract away the constant parameters of die | |
471 | reading. */ | |
93311388 DE |
472 | |
473 | struct die_reader_specs | |
474 | { | |
475 | /* The bfd of this objfile. */ | |
476 | bfd* abfd; | |
477 | ||
478 | /* The CU of the DIE we are parsing. */ | |
479 | struct dwarf2_cu *cu; | |
480 | ||
481 | /* Pointer to start of section buffer. | |
482 | This is either the start of .debug_info or .debug_types. */ | |
483 | const gdb_byte *buffer; | |
484 | }; | |
485 | ||
debd256d JB |
486 | /* The line number information for a compilation unit (found in the |
487 | .debug_line section) begins with a "statement program header", | |
488 | which contains the following information. */ | |
489 | struct line_header | |
490 | { | |
491 | unsigned int total_length; | |
492 | unsigned short version; | |
493 | unsigned int header_length; | |
494 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 495 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
496 | unsigned char default_is_stmt; |
497 | int line_base; | |
498 | unsigned char line_range; | |
499 | unsigned char opcode_base; | |
500 | ||
501 | /* standard_opcode_lengths[i] is the number of operands for the | |
502 | standard opcode whose value is i. This means that | |
503 | standard_opcode_lengths[0] is unused, and the last meaningful | |
504 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
505 | unsigned char *standard_opcode_lengths; | |
506 | ||
507 | /* The include_directories table. NOTE! These strings are not | |
508 | allocated with xmalloc; instead, they are pointers into | |
509 | debug_line_buffer. If you try to free them, `free' will get | |
510 | indigestion. */ | |
511 | unsigned int num_include_dirs, include_dirs_size; | |
512 | char **include_dirs; | |
513 | ||
514 | /* The file_names table. NOTE! These strings are not allocated | |
515 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
516 | Don't try to free them directly. */ | |
517 | unsigned int num_file_names, file_names_size; | |
518 | struct file_entry | |
c906108c | 519 | { |
debd256d JB |
520 | char *name; |
521 | unsigned int dir_index; | |
522 | unsigned int mod_time; | |
523 | unsigned int length; | |
aaa75496 | 524 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 525 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
526 | } *file_names; |
527 | ||
528 | /* The start and end of the statement program following this | |
6502dd73 | 529 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 530 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 531 | }; |
c906108c SS |
532 | |
533 | /* When we construct a partial symbol table entry we only | |
0963b4bd | 534 | need this much information. */ |
c906108c SS |
535 | struct partial_die_info |
536 | { | |
72bf9492 | 537 | /* Offset of this DIE. */ |
c906108c | 538 | unsigned int offset; |
72bf9492 DJ |
539 | |
540 | /* DWARF-2 tag for this DIE. */ | |
541 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
542 | ||
72bf9492 DJ |
543 | /* Assorted flags describing the data found in this DIE. */ |
544 | unsigned int has_children : 1; | |
545 | unsigned int is_external : 1; | |
546 | unsigned int is_declaration : 1; | |
547 | unsigned int has_type : 1; | |
548 | unsigned int has_specification : 1; | |
549 | unsigned int has_pc_info : 1; | |
550 | ||
551 | /* Flag set if the SCOPE field of this structure has been | |
552 | computed. */ | |
553 | unsigned int scope_set : 1; | |
554 | ||
fa4028e9 JB |
555 | /* Flag set if the DIE has a byte_size attribute. */ |
556 | unsigned int has_byte_size : 1; | |
557 | ||
98bfdba5 PA |
558 | /* Flag set if any of the DIE's children are template arguments. */ |
559 | unsigned int has_template_arguments : 1; | |
560 | ||
abc72ce4 DE |
561 | /* Flag set if fixup_partial_die has been called on this die. */ |
562 | unsigned int fixup_called : 1; | |
563 | ||
72bf9492 | 564 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 565 | sometimes a default name for unnamed DIEs. */ |
c906108c | 566 | char *name; |
72bf9492 | 567 | |
abc72ce4 DE |
568 | /* The linkage name, if present. */ |
569 | const char *linkage_name; | |
570 | ||
72bf9492 DJ |
571 | /* The scope to prepend to our children. This is generally |
572 | allocated on the comp_unit_obstack, so will disappear | |
573 | when this compilation unit leaves the cache. */ | |
574 | char *scope; | |
575 | ||
576 | /* The location description associated with this DIE, if any. */ | |
577 | struct dwarf_block *locdesc; | |
578 | ||
579 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
580 | CORE_ADDR lowpc; |
581 | CORE_ADDR highpc; | |
72bf9492 | 582 | |
93311388 | 583 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 584 | DW_AT_sibling, if any. */ |
abc72ce4 DE |
585 | /* NOTE: This member isn't strictly necessary, read_partial_die could |
586 | return DW_AT_sibling values to its caller load_partial_dies. */ | |
fe1b8b76 | 587 | gdb_byte *sibling; |
72bf9492 DJ |
588 | |
589 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
590 | DW_AT_specification (or DW_AT_abstract_origin or | |
591 | DW_AT_extension). */ | |
592 | unsigned int spec_offset; | |
593 | ||
594 | /* Pointers to this DIE's parent, first child, and next sibling, | |
595 | if any. */ | |
596 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
597 | }; |
598 | ||
0963b4bd | 599 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
600 | struct abbrev_info |
601 | { | |
602 | unsigned int number; /* number identifying abbrev */ | |
603 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
604 | unsigned short has_children; /* boolean */ |
605 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
606 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
607 | struct abbrev_info *next; /* next in chain */ | |
608 | }; | |
609 | ||
610 | struct attr_abbrev | |
611 | { | |
9d25dd43 DE |
612 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
613 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
614 | }; |
615 | ||
0963b4bd | 616 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
617 | struct attribute |
618 | { | |
9d25dd43 | 619 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
620 | ENUM_BITFIELD(dwarf_form) form : 15; |
621 | ||
622 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
623 | field should be in u.str (existing only for DW_STRING) but it is kept | |
624 | here for better struct attribute alignment. */ | |
625 | unsigned int string_is_canonical : 1; | |
626 | ||
b60c80d6 DJ |
627 | union |
628 | { | |
629 | char *str; | |
630 | struct dwarf_block *blk; | |
43bbcdc2 PH |
631 | ULONGEST unsnd; |
632 | LONGEST snd; | |
b60c80d6 | 633 | CORE_ADDR addr; |
348e048f | 634 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
635 | } |
636 | u; | |
637 | }; | |
638 | ||
0963b4bd | 639 | /* This data structure holds a complete die structure. */ |
c906108c SS |
640 | struct die_info |
641 | { | |
76815b17 DE |
642 | /* DWARF-2 tag for this DIE. */ |
643 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
644 | ||
645 | /* Number of attributes */ | |
98bfdba5 PA |
646 | unsigned char num_attrs; |
647 | ||
648 | /* True if we're presently building the full type name for the | |
649 | type derived from this DIE. */ | |
650 | unsigned char building_fullname : 1; | |
76815b17 DE |
651 | |
652 | /* Abbrev number */ | |
653 | unsigned int abbrev; | |
654 | ||
93311388 | 655 | /* Offset in .debug_info or .debug_types section. */ |
76815b17 | 656 | unsigned int offset; |
78ba4af6 JB |
657 | |
658 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
659 | points to this die's parent; CHILD points to the first child of | |
660 | this node; and all the children of a given node are chained | |
4950bc1c | 661 | together via their SIBLING fields. */ |
639d11d3 DC |
662 | struct die_info *child; /* Its first child, if any. */ |
663 | struct die_info *sibling; /* Its next sibling, if any. */ | |
664 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 665 | |
b60c80d6 DJ |
666 | /* An array of attributes, with NUM_ATTRS elements. There may be |
667 | zero, but it's not common and zero-sized arrays are not | |
668 | sufficiently portable C. */ | |
669 | struct attribute attrs[1]; | |
c906108c SS |
670 | }; |
671 | ||
5fb290d7 DJ |
672 | struct function_range |
673 | { | |
674 | const char *name; | |
675 | CORE_ADDR lowpc, highpc; | |
676 | int seen_line; | |
677 | struct function_range *next; | |
678 | }; | |
679 | ||
0963b4bd | 680 | /* Get at parts of an attribute structure. */ |
c906108c SS |
681 | |
682 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 683 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
684 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
685 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
686 | #define DW_SND(attr) ((attr)->u.snd) | |
687 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 688 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c | 689 | |
0963b4bd | 690 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
691 | struct dwarf_block |
692 | { | |
693 | unsigned int size; | |
fe1b8b76 | 694 | gdb_byte *data; |
c906108c SS |
695 | }; |
696 | ||
c906108c SS |
697 | #ifndef ATTR_ALLOC_CHUNK |
698 | #define ATTR_ALLOC_CHUNK 4 | |
699 | #endif | |
700 | ||
c906108c SS |
701 | /* Allocate fields for structs, unions and enums in this size. */ |
702 | #ifndef DW_FIELD_ALLOC_CHUNK | |
703 | #define DW_FIELD_ALLOC_CHUNK 4 | |
704 | #endif | |
705 | ||
c906108c SS |
706 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
707 | but this would require a corresponding change in unpack_field_as_long | |
708 | and friends. */ | |
709 | static int bits_per_byte = 8; | |
710 | ||
711 | /* The routines that read and process dies for a C struct or C++ class | |
712 | pass lists of data member fields and lists of member function fields | |
713 | in an instance of a field_info structure, as defined below. */ | |
714 | struct field_info | |
c5aa993b | 715 | { |
0963b4bd | 716 | /* List of data member and baseclasses fields. */ |
c5aa993b JM |
717 | struct nextfield |
718 | { | |
719 | struct nextfield *next; | |
720 | int accessibility; | |
721 | int virtuality; | |
722 | struct field field; | |
723 | } | |
7d0ccb61 | 724 | *fields, *baseclasses; |
c906108c | 725 | |
7d0ccb61 | 726 | /* Number of fields (including baseclasses). */ |
c5aa993b | 727 | int nfields; |
c906108c | 728 | |
c5aa993b JM |
729 | /* Number of baseclasses. */ |
730 | int nbaseclasses; | |
c906108c | 731 | |
c5aa993b JM |
732 | /* Set if the accesibility of one of the fields is not public. */ |
733 | int non_public_fields; | |
c906108c | 734 | |
c5aa993b JM |
735 | /* Member function fields array, entries are allocated in the order they |
736 | are encountered in the object file. */ | |
737 | struct nextfnfield | |
738 | { | |
739 | struct nextfnfield *next; | |
740 | struct fn_field fnfield; | |
741 | } | |
742 | *fnfields; | |
c906108c | 743 | |
c5aa993b JM |
744 | /* Member function fieldlist array, contains name of possibly overloaded |
745 | member function, number of overloaded member functions and a pointer | |
746 | to the head of the member function field chain. */ | |
747 | struct fnfieldlist | |
748 | { | |
749 | char *name; | |
750 | int length; | |
751 | struct nextfnfield *head; | |
752 | } | |
753 | *fnfieldlists; | |
c906108c | 754 | |
c5aa993b JM |
755 | /* Number of entries in the fnfieldlists array. */ |
756 | int nfnfields; | |
98751a41 JK |
757 | |
758 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
759 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
760 | struct typedef_field_list | |
761 | { | |
762 | struct typedef_field field; | |
763 | struct typedef_field_list *next; | |
764 | } | |
765 | *typedef_field_list; | |
766 | unsigned typedef_field_list_count; | |
c5aa993b | 767 | }; |
c906108c | 768 | |
10b3939b DJ |
769 | /* One item on the queue of compilation units to read in full symbols |
770 | for. */ | |
771 | struct dwarf2_queue_item | |
772 | { | |
773 | struct dwarf2_per_cu_data *per_cu; | |
774 | struct dwarf2_queue_item *next; | |
775 | }; | |
776 | ||
777 | /* The current queue. */ | |
778 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
779 | ||
ae038cb0 DJ |
780 | /* Loaded secondary compilation units are kept in memory until they |
781 | have not been referenced for the processing of this many | |
782 | compilation units. Set this to zero to disable caching. Cache | |
783 | sizes of up to at least twenty will improve startup time for | |
784 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
785 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
786 | static void |
787 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
788 | struct cmd_list_element *c, const char *value) | |
789 | { | |
3e43a32a MS |
790 | fprintf_filtered (file, _("The upper bound on the age of cached " |
791 | "dwarf2 compilation units is %s.\n"), | |
920d2a44 AC |
792 | value); |
793 | } | |
794 | ||
ae038cb0 | 795 | |
0963b4bd | 796 | /* Various complaints about symbol reading that don't abort the process. */ |
c906108c | 797 | |
4d3c2250 KB |
798 | static void |
799 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 800 | { |
4d3c2250 | 801 | complaint (&symfile_complaints, |
e2e0b3e5 | 802 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
803 | } |
804 | ||
25e43795 DJ |
805 | static void |
806 | dwarf2_debug_line_missing_file_complaint (void) | |
807 | { | |
808 | complaint (&symfile_complaints, | |
809 | _(".debug_line section has line data without a file")); | |
810 | } | |
811 | ||
59205f5a JB |
812 | static void |
813 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
814 | { | |
815 | complaint (&symfile_complaints, | |
3e43a32a MS |
816 | _(".debug_line section has line " |
817 | "program sequence without an end")); | |
59205f5a JB |
818 | } |
819 | ||
4d3c2250 KB |
820 | static void |
821 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 822 | { |
e2e0b3e5 | 823 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
824 | } |
825 | ||
4d3c2250 KB |
826 | static void |
827 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
828 | int arg3) | |
2e276125 | 829 | { |
4d3c2250 | 830 | complaint (&symfile_complaints, |
3e43a32a MS |
831 | _("const value length mismatch for '%s', got %d, expected %d"), |
832 | arg1, arg2, arg3); | |
4d3c2250 KB |
833 | } |
834 | ||
835 | static void | |
836 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 837 | { |
4d3c2250 | 838 | complaint (&symfile_complaints, |
e2e0b3e5 | 839 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
840 | } |
841 | ||
842 | static void | |
843 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 844 | { |
4d3c2250 | 845 | complaint (&symfile_complaints, |
3e43a32a MS |
846 | _("macro debug info contains a " |
847 | "malformed macro definition:\n`%s'"), | |
4d3c2250 KB |
848 | arg1); |
849 | } | |
850 | ||
851 | static void | |
852 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 853 | { |
4d3c2250 | 854 | complaint (&symfile_complaints, |
3e43a32a MS |
855 | _("invalid attribute class or form for '%s' in '%s'"), |
856 | arg1, arg2); | |
4d3c2250 | 857 | } |
c906108c | 858 | |
c906108c SS |
859 | /* local function prototypes */ |
860 | ||
4efb68b1 | 861 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 862 | |
aaa75496 JB |
863 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
864 | struct objfile *); | |
865 | ||
c67a9c90 | 866 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 867 | |
72bf9492 DJ |
868 | static void scan_partial_symbols (struct partial_die_info *, |
869 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 870 | int, struct dwarf2_cu *); |
c906108c | 871 | |
72bf9492 DJ |
872 | static void add_partial_symbol (struct partial_die_info *, |
873 | struct dwarf2_cu *); | |
63d06c5c | 874 | |
72bf9492 DJ |
875 | static void add_partial_namespace (struct partial_die_info *pdi, |
876 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 877 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 878 | |
5d7cb8df JK |
879 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
880 | CORE_ADDR *highpc, int need_pc, | |
881 | struct dwarf2_cu *cu); | |
882 | ||
72bf9492 DJ |
883 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
884 | struct dwarf2_cu *cu); | |
91c24f0a | 885 | |
bc30ff58 JB |
886 | static void add_partial_subprogram (struct partial_die_info *pdi, |
887 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 888 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 889 | |
fe1b8b76 | 890 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
93311388 DE |
891 | gdb_byte *buffer, gdb_byte *info_ptr, |
892 | bfd *abfd, struct dwarf2_cu *cu); | |
91c24f0a | 893 | |
a14ed312 | 894 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 895 | |
a14ed312 | 896 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 897 | |
e7c27a73 | 898 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 899 | |
f3dd6933 | 900 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 901 | |
fe1b8b76 | 902 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 903 | struct dwarf2_cu *); |
72bf9492 | 904 | |
57349743 | 905 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 906 | struct dwarf2_cu *); |
c906108c | 907 | |
93311388 DE |
908 | static struct partial_die_info *load_partial_dies (bfd *, |
909 | gdb_byte *, gdb_byte *, | |
910 | int, struct dwarf2_cu *); | |
72bf9492 | 911 | |
fe1b8b76 | 912 | static gdb_byte *read_partial_die (struct partial_die_info *, |
93311388 DE |
913 | struct abbrev_info *abbrev, |
914 | unsigned int, bfd *, | |
915 | gdb_byte *, gdb_byte *, | |
916 | struct dwarf2_cu *); | |
c906108c | 917 | |
c764a876 | 918 | static struct partial_die_info *find_partial_die (unsigned int, |
10b3939b | 919 | struct dwarf2_cu *); |
72bf9492 DJ |
920 | |
921 | static void fixup_partial_die (struct partial_die_info *, | |
922 | struct dwarf2_cu *); | |
923 | ||
fe1b8b76 JB |
924 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
925 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 926 | |
fe1b8b76 JB |
927 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
928 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 929 | |
fe1b8b76 | 930 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 931 | |
fe1b8b76 | 932 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 933 | |
fe1b8b76 | 934 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 935 | |
fe1b8b76 | 936 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 937 | |
93311388 | 938 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 939 | |
fe1b8b76 | 940 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 941 | unsigned int *); |
c906108c | 942 | |
c764a876 DE |
943 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
944 | ||
945 | static LONGEST read_checked_initial_length_and_offset | |
946 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
947 | unsigned int *, unsigned int *); | |
613e1657 | 948 | |
fe1b8b76 | 949 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
950 | unsigned int *); |
951 | ||
952 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 953 | |
fe1b8b76 | 954 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 955 | |
9b1c24c8 | 956 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 957 | |
fe1b8b76 JB |
958 | static char *read_indirect_string (bfd *, gdb_byte *, |
959 | const struct comp_unit_head *, | |
960 | unsigned int *); | |
4bdf3d34 | 961 | |
fe1b8b76 | 962 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 963 | |
fe1b8b76 | 964 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 965 | |
fe1b8b76 | 966 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 967 | |
e142c38c | 968 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 969 | |
e142c38c DJ |
970 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
971 | struct dwarf2_cu *); | |
c906108c | 972 | |
348e048f DE |
973 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
974 | unsigned int, | |
975 | struct dwarf2_cu *); | |
976 | ||
05cf31d1 JB |
977 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
978 | struct dwarf2_cu *cu); | |
979 | ||
e142c38c | 980 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 981 | |
e142c38c | 982 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 983 | struct dwarf2_cu **); |
63d06c5c | 984 | |
debd256d JB |
985 | static void free_line_header (struct line_header *lh); |
986 | ||
aaa75496 JB |
987 | static void add_file_name (struct line_header *, char *, unsigned int, |
988 | unsigned int, unsigned int); | |
989 | ||
debd256d JB |
990 | static struct line_header *(dwarf_decode_line_header |
991 | (unsigned int offset, | |
e7c27a73 | 992 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d | 993 | |
72b9f47f | 994 | static void dwarf_decode_lines (struct line_header *, const char *, bfd *, |
aaa75496 | 995 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 996 | |
72b9f47f | 997 | static void dwarf2_start_subfile (char *, const char *, const char *); |
c906108c | 998 | |
a14ed312 | 999 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 1000 | struct dwarf2_cu *); |
c906108c | 1001 | |
34eaf542 TT |
1002 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
1003 | struct dwarf2_cu *, struct symbol *); | |
1004 | ||
a14ed312 | 1005 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 1006 | struct dwarf2_cu *); |
c906108c | 1007 | |
98bfdba5 PA |
1008 | static void dwarf2_const_value_attr (struct attribute *attr, |
1009 | struct type *type, | |
1010 | const char *name, | |
1011 | struct obstack *obstack, | |
1012 | struct dwarf2_cu *cu, long *value, | |
1013 | gdb_byte **bytes, | |
1014 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1015 | |
e7c27a73 | 1016 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1017 | |
b4ba55a1 JB |
1018 | static int need_gnat_info (struct dwarf2_cu *); |
1019 | ||
3e43a32a MS |
1020 | static struct type *die_descriptive_type (struct die_info *, |
1021 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1022 | |
1023 | static void set_descriptive_type (struct type *, struct die_info *, | |
1024 | struct dwarf2_cu *); | |
1025 | ||
e7c27a73 DJ |
1026 | static struct type *die_containing_type (struct die_info *, |
1027 | struct dwarf2_cu *); | |
c906108c | 1028 | |
673bfd45 DE |
1029 | static struct type *lookup_die_type (struct die_info *, struct attribute *, |
1030 | struct dwarf2_cu *); | |
c906108c | 1031 | |
f792889a | 1032 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1033 | |
673bfd45 DE |
1034 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1035 | ||
086ed43d | 1036 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1037 | |
6e70227d | 1038 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1039 | const char *suffix, int physname, |
1040 | struct dwarf2_cu *cu); | |
63d06c5c | 1041 | |
e7c27a73 | 1042 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1043 | |
348e048f DE |
1044 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1045 | ||
e7c27a73 | 1046 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1047 | |
e7c27a73 | 1048 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1049 | |
ff013f42 JK |
1050 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1051 | struct dwarf2_cu *, struct partial_symtab *); | |
1052 | ||
a14ed312 | 1053 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1054 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1055 | struct partial_symtab *); | |
c906108c | 1056 | |
fae299cd DC |
1057 | static void get_scope_pc_bounds (struct die_info *, |
1058 | CORE_ADDR *, CORE_ADDR *, | |
1059 | struct dwarf2_cu *); | |
1060 | ||
801e3a5b JB |
1061 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1062 | CORE_ADDR, struct dwarf2_cu *); | |
1063 | ||
a14ed312 | 1064 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1065 | struct dwarf2_cu *); |
c906108c | 1066 | |
a14ed312 | 1067 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1068 | struct type *, struct dwarf2_cu *); |
c906108c | 1069 | |
a14ed312 | 1070 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1071 | struct die_info *, struct type *, |
e7c27a73 | 1072 | struct dwarf2_cu *); |
c906108c | 1073 | |
a14ed312 | 1074 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1075 | struct type *, |
1076 | struct dwarf2_cu *); | |
c906108c | 1077 | |
134d01f1 | 1078 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1079 | |
e7c27a73 | 1080 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1081 | |
e7c27a73 | 1082 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1083 | |
5d7cb8df JK |
1084 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1085 | ||
27aa8d6a SW |
1086 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1087 | ||
f55ee35c JK |
1088 | static struct type *read_module_type (struct die_info *die, |
1089 | struct dwarf2_cu *cu); | |
1090 | ||
38d518c9 | 1091 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1092 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1093 | |
134d01f1 | 1094 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1095 | |
e7c27a73 | 1096 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1097 | |
6e70227d | 1098 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1099 | struct dwarf2_cu *); |
1100 | ||
93311388 | 1101 | static struct die_info *read_comp_unit (gdb_byte *, struct dwarf2_cu *); |
c906108c | 1102 | |
93311388 DE |
1103 | static struct die_info *read_die_and_children_1 (const struct die_reader_specs *reader, |
1104 | gdb_byte *info_ptr, | |
d97bc12b DE |
1105 | gdb_byte **new_info_ptr, |
1106 | struct die_info *parent); | |
1107 | ||
93311388 DE |
1108 | static struct die_info *read_die_and_children (const struct die_reader_specs *reader, |
1109 | gdb_byte *info_ptr, | |
fe1b8b76 | 1110 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1111 | struct die_info *parent); |
1112 | ||
93311388 DE |
1113 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *reader, |
1114 | gdb_byte *info_ptr, | |
fe1b8b76 | 1115 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1116 | struct die_info *parent); |
1117 | ||
93311388 DE |
1118 | static gdb_byte *read_full_die (const struct die_reader_specs *reader, |
1119 | struct die_info **, gdb_byte *, | |
1120 | int *); | |
1121 | ||
e7c27a73 | 1122 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1123 | |
71c25dea TT |
1124 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1125 | struct obstack *); | |
1126 | ||
e142c38c | 1127 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1128 | |
98bfdba5 PA |
1129 | static const char *dwarf2_full_name (char *name, |
1130 | struct die_info *die, | |
1131 | struct dwarf2_cu *cu); | |
1132 | ||
e142c38c | 1133 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1134 | struct dwarf2_cu **); |
9219021c | 1135 | |
a14ed312 | 1136 | static char *dwarf_tag_name (unsigned int); |
c906108c | 1137 | |
a14ed312 | 1138 | static char *dwarf_attr_name (unsigned int); |
c906108c | 1139 | |
a14ed312 | 1140 | static char *dwarf_form_name (unsigned int); |
c906108c | 1141 | |
a14ed312 | 1142 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1143 | |
a14ed312 | 1144 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
1145 | |
1146 | #if 0 | |
a14ed312 | 1147 | static char *dwarf_cfi_name (unsigned int); |
c906108c SS |
1148 | #endif |
1149 | ||
f9aca02d | 1150 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1151 | |
d97bc12b DE |
1152 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1153 | ||
1154 | static void dump_die_for_error (struct die_info *); | |
1155 | ||
1156 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1157 | struct die_info *); | |
c906108c | 1158 | |
d97bc12b | 1159 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1160 | |
51545339 | 1161 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1162 | struct dwarf2_cu *); |
c906108c | 1163 | |
93311388 DE |
1164 | static int is_ref_attr (struct attribute *); |
1165 | ||
c764a876 | 1166 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1167 | |
43bbcdc2 | 1168 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1169 | |
348e048f DE |
1170 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1171 | struct attribute *, | |
1172 | struct dwarf2_cu **); | |
1173 | ||
10b3939b DJ |
1174 | static struct die_info *follow_die_ref (struct die_info *, |
1175 | struct attribute *, | |
f2f0e013 | 1176 | struct dwarf2_cu **); |
c906108c | 1177 | |
348e048f DE |
1178 | static struct die_info *follow_die_sig (struct die_info *, |
1179 | struct attribute *, | |
1180 | struct dwarf2_cu **); | |
1181 | ||
1182 | static void read_signatured_type_at_offset (struct objfile *objfile, | |
1183 | unsigned int offset); | |
1184 | ||
1185 | static void read_signatured_type (struct objfile *, | |
1186 | struct signatured_type *type_sig); | |
1187 | ||
c906108c SS |
1188 | /* memory allocation interface */ |
1189 | ||
7b5a2f43 | 1190 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1191 | |
f3dd6933 | 1192 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1193 | |
b60c80d6 | 1194 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1195 | |
e142c38c | 1196 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1197 | |
e142c38c DJ |
1198 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1199 | struct dwarf2_cu *); | |
5fb290d7 | 1200 | |
2e276125 | 1201 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1202 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1203 | |
8e19ed76 PS |
1204 | static int attr_form_is_block (struct attribute *); |
1205 | ||
3690dd37 JB |
1206 | static int attr_form_is_section_offset (struct attribute *); |
1207 | ||
1208 | static int attr_form_is_constant (struct attribute *); | |
1209 | ||
8cf6f0b1 TT |
1210 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1211 | struct dwarf2_loclist_baton *baton, | |
1212 | struct attribute *attr); | |
1213 | ||
93e7bd98 DJ |
1214 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1215 | struct symbol *sym, | |
1216 | struct dwarf2_cu *cu); | |
4c2df51b | 1217 | |
93311388 DE |
1218 | static gdb_byte *skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
1219 | struct abbrev_info *abbrev, | |
1220 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1221 | |
72bf9492 DJ |
1222 | static void free_stack_comp_unit (void *); |
1223 | ||
72bf9492 DJ |
1224 | static hashval_t partial_die_hash (const void *item); |
1225 | ||
1226 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1227 | ||
ae038cb0 | 1228 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
c764a876 | 1229 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 DJ |
1230 | |
1231 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
c764a876 | 1232 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 | 1233 | |
9816fde3 JK |
1234 | static void init_one_comp_unit (struct dwarf2_cu *cu, |
1235 | struct objfile *objfile); | |
1236 | ||
1237 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, | |
1238 | struct die_info *comp_unit_die); | |
93311388 | 1239 | |
ae038cb0 DJ |
1240 | static void free_one_comp_unit (void *); |
1241 | ||
1242 | static void free_cached_comp_units (void *); | |
1243 | ||
1244 | static void age_cached_comp_units (void); | |
1245 | ||
1246 | static void free_one_cached_comp_unit (void *); | |
1247 | ||
f792889a DJ |
1248 | static struct type *set_die_type (struct die_info *, struct type *, |
1249 | struct dwarf2_cu *); | |
1c379e20 | 1250 | |
ae038cb0 DJ |
1251 | static void create_all_comp_units (struct objfile *); |
1252 | ||
1fd400ff TT |
1253 | static int create_debug_types_hash_table (struct objfile *objfile); |
1254 | ||
93311388 DE |
1255 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1256 | struct objfile *); | |
10b3939b DJ |
1257 | |
1258 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1259 | ||
1260 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1261 | struct dwarf2_per_cu_data *); | |
1262 | ||
ae038cb0 DJ |
1263 | static void dwarf2_mark (struct dwarf2_cu *); |
1264 | ||
1265 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1266 | ||
673bfd45 DE |
1267 | static struct type *get_die_type_at_offset (unsigned int, |
1268 | struct dwarf2_per_cu_data *per_cu); | |
1269 | ||
f792889a | 1270 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1271 | |
9291a0cd TT |
1272 | static void dwarf2_release_queue (void *dummy); |
1273 | ||
1274 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, | |
1275 | struct objfile *objfile); | |
1276 | ||
1277 | static void process_queue (struct objfile *objfile); | |
1278 | ||
1279 | static void find_file_and_directory (struct die_info *die, | |
1280 | struct dwarf2_cu *cu, | |
1281 | char **name, char **comp_dir); | |
1282 | ||
1283 | static char *file_full_name (int file, struct line_header *lh, | |
1284 | const char *comp_dir); | |
1285 | ||
1286 | static gdb_byte *partial_read_comp_unit_head (struct comp_unit_head *header, | |
1287 | gdb_byte *info_ptr, | |
1288 | gdb_byte *buffer, | |
1289 | unsigned int buffer_size, | |
1290 | bfd *abfd); | |
1291 | ||
1292 | static void init_cu_die_reader (struct die_reader_specs *reader, | |
1293 | struct dwarf2_cu *cu); | |
1294 | ||
673bfd45 | 1295 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1296 | |
9291a0cd TT |
1297 | #if WORDS_BIGENDIAN |
1298 | ||
1299 | /* Convert VALUE between big- and little-endian. */ | |
1300 | static offset_type | |
1301 | byte_swap (offset_type value) | |
1302 | { | |
1303 | offset_type result; | |
1304 | ||
1305 | result = (value & 0xff) << 24; | |
1306 | result |= (value & 0xff00) << 8; | |
1307 | result |= (value & 0xff0000) >> 8; | |
1308 | result |= (value & 0xff000000) >> 24; | |
1309 | return result; | |
1310 | } | |
1311 | ||
1312 | #define MAYBE_SWAP(V) byte_swap (V) | |
1313 | ||
1314 | #else | |
1315 | #define MAYBE_SWAP(V) (V) | |
1316 | #endif /* WORDS_BIGENDIAN */ | |
1317 | ||
1318 | /* The suffix for an index file. */ | |
1319 | #define INDEX_SUFFIX ".gdb-index" | |
1320 | ||
3da10d80 KS |
1321 | static const char *dwarf2_physname (char *name, struct die_info *die, |
1322 | struct dwarf2_cu *cu); | |
1323 | ||
c906108c SS |
1324 | /* Try to locate the sections we need for DWARF 2 debugging |
1325 | information and return true if we have enough to do something. */ | |
1326 | ||
1327 | int | |
6502dd73 | 1328 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1329 | { |
be391dca TT |
1330 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1331 | if (!dwarf2_per_objfile) | |
1332 | { | |
1333 | /* Initialize per-objfile state. */ | |
1334 | struct dwarf2_per_objfile *data | |
1335 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1336 | |
be391dca TT |
1337 | memset (data, 0, sizeof (*data)); |
1338 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1339 | dwarf2_per_objfile = data; | |
6502dd73 | 1340 | |
be391dca TT |
1341 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
1342 | dwarf2_per_objfile->objfile = objfile; | |
1343 | } | |
1344 | return (dwarf2_per_objfile->info.asection != NULL | |
1345 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1346 | } |
1347 | ||
233a11ab CS |
1348 | /* When loading sections, we can either look for ".<name>", or for |
1349 | * ".z<name>", which indicates a compressed section. */ | |
1350 | ||
1351 | static int | |
dce234bc | 1352 | section_is_p (const char *section_name, const char *name) |
233a11ab | 1353 | { |
dce234bc PP |
1354 | return (section_name[0] == '.' |
1355 | && (strcmp (section_name + 1, name) == 0 | |
1356 | || (section_name[1] == 'z' | |
1357 | && strcmp (section_name + 2, name) == 0))); | |
233a11ab CS |
1358 | } |
1359 | ||
c906108c SS |
1360 | /* This function is mapped across the sections and remembers the |
1361 | offset and size of each of the debugging sections we are interested | |
1362 | in. */ | |
1363 | ||
1364 | static void | |
72dca2f5 | 1365 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1366 | { |
dce234bc | 1367 | if (section_is_p (sectp->name, INFO_SECTION)) |
c906108c | 1368 | { |
dce234bc PP |
1369 | dwarf2_per_objfile->info.asection = sectp; |
1370 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1371 | } |
dce234bc | 1372 | else if (section_is_p (sectp->name, ABBREV_SECTION)) |
c906108c | 1373 | { |
dce234bc PP |
1374 | dwarf2_per_objfile->abbrev.asection = sectp; |
1375 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1376 | } |
dce234bc | 1377 | else if (section_is_p (sectp->name, LINE_SECTION)) |
c906108c | 1378 | { |
dce234bc PP |
1379 | dwarf2_per_objfile->line.asection = sectp; |
1380 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1381 | } |
dce234bc | 1382 | else if (section_is_p (sectp->name, LOC_SECTION)) |
c906108c | 1383 | { |
dce234bc PP |
1384 | dwarf2_per_objfile->loc.asection = sectp; |
1385 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1386 | } |
dce234bc | 1387 | else if (section_is_p (sectp->name, MACINFO_SECTION)) |
c906108c | 1388 | { |
dce234bc PP |
1389 | dwarf2_per_objfile->macinfo.asection = sectp; |
1390 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1391 | } |
dce234bc | 1392 | else if (section_is_p (sectp->name, STR_SECTION)) |
c906108c | 1393 | { |
dce234bc PP |
1394 | dwarf2_per_objfile->str.asection = sectp; |
1395 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1396 | } |
dce234bc | 1397 | else if (section_is_p (sectp->name, FRAME_SECTION)) |
b6af0555 | 1398 | { |
dce234bc PP |
1399 | dwarf2_per_objfile->frame.asection = sectp; |
1400 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1401 | } |
dce234bc | 1402 | else if (section_is_p (sectp->name, EH_FRAME_SECTION)) |
b6af0555 | 1403 | { |
3799ccc6 | 1404 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
9a619af0 | 1405 | |
3799ccc6 EZ |
1406 | if (aflag & SEC_HAS_CONTENTS) |
1407 | { | |
dce234bc PP |
1408 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1409 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1410 | } |
b6af0555 | 1411 | } |
dce234bc | 1412 | else if (section_is_p (sectp->name, RANGES_SECTION)) |
af34e669 | 1413 | { |
dce234bc PP |
1414 | dwarf2_per_objfile->ranges.asection = sectp; |
1415 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1416 | } |
348e048f DE |
1417 | else if (section_is_p (sectp->name, TYPES_SECTION)) |
1418 | { | |
1419 | dwarf2_per_objfile->types.asection = sectp; | |
1420 | dwarf2_per_objfile->types.size = bfd_get_section_size (sectp); | |
1421 | } | |
9291a0cd TT |
1422 | else if (section_is_p (sectp->name, GDB_INDEX_SECTION)) |
1423 | { | |
1424 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1425 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1426 | } | |
dce234bc | 1427 | |
72dca2f5 FR |
1428 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1429 | && bfd_section_vma (abfd, sectp) == 0) | |
1430 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1431 | } |
1432 | ||
dce234bc PP |
1433 | /* Decompress a section that was compressed using zlib. Store the |
1434 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1435 | |
1436 | static void | |
dce234bc PP |
1437 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1438 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1439 | { | |
1440 | bfd *abfd = objfile->obfd; | |
1441 | #ifndef HAVE_ZLIB_H | |
1442 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1443 | "is disabled in this copy of GDB"), | |
1444 | bfd_get_filename (abfd)); | |
1445 | #else | |
1446 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1447 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1448 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1449 | bfd_size_type uncompressed_size; |
1450 | gdb_byte *uncompressed_buffer; | |
1451 | z_stream strm; | |
1452 | int rc; | |
1453 | int header_size = 12; | |
1454 | ||
1455 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
3e43a32a MS |
1456 | || bfd_bread (compressed_buffer, |
1457 | compressed_size, abfd) != compressed_size) | |
dce234bc PP |
1458 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
1459 | bfd_get_filename (abfd)); | |
1460 | ||
1461 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1462 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1463 | if (compressed_size < header_size | |
1464 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1465 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1466 | bfd_get_filename (abfd)); | |
1467 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1468 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1469 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1470 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1471 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1472 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1473 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1474 | uncompressed_size += compressed_buffer[11]; | |
1475 | ||
1476 | /* It is possible the section consists of several compressed | |
1477 | buffers concatenated together, so we uncompress in a loop. */ | |
1478 | strm.zalloc = NULL; | |
1479 | strm.zfree = NULL; | |
1480 | strm.opaque = NULL; | |
1481 | strm.avail_in = compressed_size - header_size; | |
1482 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1483 | strm.avail_out = uncompressed_size; | |
1484 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1485 | uncompressed_size); | |
1486 | rc = inflateInit (&strm); | |
1487 | while (strm.avail_in > 0) | |
1488 | { | |
1489 | if (rc != Z_OK) | |
1490 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1491 | bfd_get_filename (abfd), rc); | |
1492 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1493 | + (uncompressed_size - strm.avail_out)); | |
1494 | rc = inflate (&strm, Z_FINISH); | |
1495 | if (rc != Z_STREAM_END) | |
1496 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1497 | bfd_get_filename (abfd), rc); | |
1498 | rc = inflateReset (&strm); | |
1499 | } | |
1500 | rc = inflateEnd (&strm); | |
1501 | if (rc != Z_OK | |
1502 | || strm.avail_out != 0) | |
1503 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1504 | bfd_get_filename (abfd), rc); | |
1505 | ||
affddf13 | 1506 | do_cleanups (cleanup); |
dce234bc PP |
1507 | *outbuf = uncompressed_buffer; |
1508 | *outsize = uncompressed_size; | |
1509 | #endif | |
233a11ab CS |
1510 | } |
1511 | ||
9e0ac564 TT |
1512 | /* A helper function that decides whether a section is empty. */ |
1513 | ||
1514 | static int | |
1515 | dwarf2_section_empty_p (struct dwarf2_section_info *info) | |
1516 | { | |
1517 | return info->asection == NULL || info->size == 0; | |
1518 | } | |
1519 | ||
dce234bc PP |
1520 | /* Read the contents of the section SECTP from object file specified by |
1521 | OBJFILE, store info about the section into INFO. | |
1522 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 1523 | |
dce234bc PP |
1524 | static void |
1525 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1526 | { |
dce234bc PP |
1527 | bfd *abfd = objfile->obfd; |
1528 | asection *sectp = info->asection; | |
1529 | gdb_byte *buf, *retbuf; | |
1530 | unsigned char header[4]; | |
c906108c | 1531 | |
be391dca TT |
1532 | if (info->readin) |
1533 | return; | |
dce234bc PP |
1534 | info->buffer = NULL; |
1535 | info->was_mmapped = 0; | |
be391dca | 1536 | info->readin = 1; |
188dd5d6 | 1537 | |
9e0ac564 | 1538 | if (dwarf2_section_empty_p (info)) |
dce234bc | 1539 | return; |
c906108c | 1540 | |
dce234bc PP |
1541 | /* Check if the file has a 4-byte header indicating compression. */ |
1542 | if (info->size > sizeof (header) | |
1543 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1544 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1545 | { | |
1546 | /* Upon decompression, update the buffer and its size. */ | |
1547 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1548 | { | |
1549 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1550 | &info->size); | |
1551 | return; | |
1552 | } | |
1553 | } | |
4bdf3d34 | 1554 | |
dce234bc PP |
1555 | #ifdef HAVE_MMAP |
1556 | if (pagesize == 0) | |
1557 | pagesize = getpagesize (); | |
2e276125 | 1558 | |
dce234bc PP |
1559 | /* Only try to mmap sections which are large enough: we don't want to |
1560 | waste space due to fragmentation. Also, only try mmap for sections | |
1561 | without relocations. */ | |
1562 | ||
1563 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1564 | { | |
1565 | off_t pg_offset = sectp->filepos & ~(pagesize - 1); | |
1566 | size_t map_length = info->size + sectp->filepos - pg_offset; | |
1567 | caddr_t retbuf = bfd_mmap (abfd, 0, map_length, PROT_READ, | |
1568 | MAP_PRIVATE, pg_offset); | |
1569 | ||
1570 | if (retbuf != MAP_FAILED) | |
1571 | { | |
1572 | info->was_mmapped = 1; | |
1573 | info->buffer = retbuf + (sectp->filepos & (pagesize - 1)) ; | |
be391dca TT |
1574 | #if HAVE_POSIX_MADVISE |
1575 | posix_madvise (retbuf, map_length, POSIX_MADV_WILLNEED); | |
1576 | #endif | |
dce234bc PP |
1577 | return; |
1578 | } | |
1579 | } | |
1580 | #endif | |
1581 | ||
1582 | /* If we get here, we are a normal, not-compressed section. */ | |
1583 | info->buffer = buf | |
1584 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1585 | ||
1586 | /* When debugging .o files, we may need to apply relocations; see | |
1587 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1588 | We never compress sections in .o files, so we only need to | |
1589 | try this when the section is not compressed. */ | |
ac8035ab | 1590 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1591 | if (retbuf != NULL) |
1592 | { | |
1593 | info->buffer = retbuf; | |
1594 | return; | |
1595 | } | |
1596 | ||
1597 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1598 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1599 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1600 | bfd_get_filename (abfd)); | |
1601 | } | |
1602 | ||
9e0ac564 TT |
1603 | /* A helper function that returns the size of a section in a safe way. |
1604 | If you are positive that the section has been read before using the | |
1605 | size, then it is safe to refer to the dwarf2_section_info object's | |
1606 | "size" field directly. In other cases, you must call this | |
1607 | function, because for compressed sections the size field is not set | |
1608 | correctly until the section has been read. */ | |
1609 | ||
1610 | static bfd_size_type | |
1611 | dwarf2_section_size (struct objfile *objfile, | |
1612 | struct dwarf2_section_info *info) | |
1613 | { | |
1614 | if (!info->readin) | |
1615 | dwarf2_read_section (objfile, info); | |
1616 | return info->size; | |
1617 | } | |
1618 | ||
dce234bc | 1619 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 1620 | SECTION_NAME. */ |
af34e669 | 1621 | |
dce234bc PP |
1622 | void |
1623 | dwarf2_get_section_info (struct objfile *objfile, const char *section_name, | |
1624 | asection **sectp, gdb_byte **bufp, | |
1625 | bfd_size_type *sizep) | |
1626 | { | |
1627 | struct dwarf2_per_objfile *data | |
1628 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1629 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1630 | |
1631 | /* We may see an objfile without any DWARF, in which case we just | |
1632 | return nothing. */ | |
1633 | if (data == NULL) | |
1634 | { | |
1635 | *sectp = NULL; | |
1636 | *bufp = NULL; | |
1637 | *sizep = 0; | |
1638 | return; | |
1639 | } | |
dce234bc PP |
1640 | if (section_is_p (section_name, EH_FRAME_SECTION)) |
1641 | info = &data->eh_frame; | |
1642 | else if (section_is_p (section_name, FRAME_SECTION)) | |
1643 | info = &data->frame; | |
0d53c4c4 | 1644 | else |
f3574227 | 1645 | gdb_assert_not_reached ("unexpected section"); |
dce234bc | 1646 | |
9e0ac564 | 1647 | dwarf2_read_section (objfile, info); |
dce234bc PP |
1648 | |
1649 | *sectp = info->asection; | |
1650 | *bufp = info->buffer; | |
1651 | *sizep = info->size; | |
1652 | } | |
1653 | ||
9291a0cd | 1654 | \f |
7b9f3c50 DE |
1655 | /* DWARF quick_symbols_functions support. */ |
1656 | ||
1657 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
1658 | unique line tables, so we maintain a separate table of all .debug_line | |
1659 | derived entries to support the sharing. | |
1660 | All the quick functions need is the list of file names. We discard the | |
1661 | line_header when we're done and don't need to record it here. */ | |
1662 | struct quick_file_names | |
1663 | { | |
1664 | /* The offset in .debug_line of the line table. We hash on this. */ | |
1665 | unsigned int offset; | |
1666 | ||
1667 | /* The number of entries in file_names, real_names. */ | |
1668 | unsigned int num_file_names; | |
1669 | ||
1670 | /* The file names from the line table, after being run through | |
1671 | file_full_name. */ | |
1672 | const char **file_names; | |
1673 | ||
1674 | /* The file names from the line table after being run through | |
1675 | gdb_realpath. These are computed lazily. */ | |
1676 | const char **real_names; | |
1677 | }; | |
1678 | ||
1679 | /* When using the index (and thus not using psymtabs), each CU has an | |
1680 | object of this type. This is used to hold information needed by | |
1681 | the various "quick" methods. */ | |
1682 | struct dwarf2_per_cu_quick_data | |
1683 | { | |
1684 | /* The file table. This can be NULL if there was no file table | |
1685 | or it's currently not read in. | |
1686 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
1687 | struct quick_file_names *file_names; | |
1688 | ||
1689 | /* The corresponding symbol table. This is NULL if symbols for this | |
1690 | CU have not yet been read. */ | |
1691 | struct symtab *symtab; | |
1692 | ||
1693 | /* A temporary mark bit used when iterating over all CUs in | |
1694 | expand_symtabs_matching. */ | |
1695 | unsigned int mark : 1; | |
1696 | ||
1697 | /* True if we've tried to read the file table and found there isn't one. | |
1698 | There will be no point in trying to read it again next time. */ | |
1699 | unsigned int no_file_data : 1; | |
1700 | }; | |
1701 | ||
1702 | /* Hash function for a quick_file_names. */ | |
1703 | ||
1704 | static hashval_t | |
1705 | hash_file_name_entry (const void *e) | |
1706 | { | |
1707 | const struct quick_file_names *file_data = e; | |
1708 | ||
1709 | return file_data->offset; | |
1710 | } | |
1711 | ||
1712 | /* Equality function for a quick_file_names. */ | |
1713 | ||
1714 | static int | |
1715 | eq_file_name_entry (const void *a, const void *b) | |
1716 | { | |
1717 | const struct quick_file_names *ea = a; | |
1718 | const struct quick_file_names *eb = b; | |
1719 | ||
1720 | return ea->offset == eb->offset; | |
1721 | } | |
1722 | ||
1723 | /* Delete function for a quick_file_names. */ | |
1724 | ||
1725 | static void | |
1726 | delete_file_name_entry (void *e) | |
1727 | { | |
1728 | struct quick_file_names *file_data = e; | |
1729 | int i; | |
1730 | ||
1731 | for (i = 0; i < file_data->num_file_names; ++i) | |
1732 | { | |
1733 | xfree ((void*) file_data->file_names[i]); | |
1734 | if (file_data->real_names) | |
1735 | xfree ((void*) file_data->real_names[i]); | |
1736 | } | |
1737 | ||
1738 | /* The space for the struct itself lives on objfile_obstack, | |
1739 | so we don't free it here. */ | |
1740 | } | |
1741 | ||
1742 | /* Create a quick_file_names hash table. */ | |
1743 | ||
1744 | static htab_t | |
1745 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
1746 | { | |
1747 | return htab_create_alloc (nr_initial_entries, | |
1748 | hash_file_name_entry, eq_file_name_entry, | |
1749 | delete_file_name_entry, xcalloc, xfree); | |
1750 | } | |
9291a0cd TT |
1751 | |
1752 | /* Read in the symbols for PER_CU. OBJFILE is the objfile from which | |
1753 | this CU came. */ | |
2fdf6df6 | 1754 | |
9291a0cd TT |
1755 | static void |
1756 | dw2_do_instantiate_symtab (struct objfile *objfile, | |
1757 | struct dwarf2_per_cu_data *per_cu) | |
1758 | { | |
1759 | struct cleanup *back_to; | |
1760 | ||
1761 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
1762 | ||
1763 | queue_comp_unit (per_cu, objfile); | |
1764 | ||
1765 | if (per_cu->from_debug_types) | |
1766 | read_signatured_type_at_offset (objfile, per_cu->offset); | |
1767 | else | |
1768 | load_full_comp_unit (per_cu, objfile); | |
1769 | ||
1770 | process_queue (objfile); | |
1771 | ||
1772 | /* Age the cache, releasing compilation units that have not | |
1773 | been used recently. */ | |
1774 | age_cached_comp_units (); | |
1775 | ||
1776 | do_cleanups (back_to); | |
1777 | } | |
1778 | ||
1779 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
1780 | the objfile from which this CU came. Returns the resulting symbol | |
1781 | table. */ | |
2fdf6df6 | 1782 | |
9291a0cd TT |
1783 | static struct symtab * |
1784 | dw2_instantiate_symtab (struct objfile *objfile, | |
1785 | struct dwarf2_per_cu_data *per_cu) | |
1786 | { | |
1787 | if (!per_cu->v.quick->symtab) | |
1788 | { | |
1789 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
1790 | increment_reading_symtab (); | |
1791 | dw2_do_instantiate_symtab (objfile, per_cu); | |
1792 | do_cleanups (back_to); | |
1793 | } | |
1794 | return per_cu->v.quick->symtab; | |
1795 | } | |
1796 | ||
1fd400ff | 1797 | /* Return the CU given its index. */ |
2fdf6df6 | 1798 | |
1fd400ff TT |
1799 | static struct dwarf2_per_cu_data * |
1800 | dw2_get_cu (int index) | |
1801 | { | |
1802 | if (index >= dwarf2_per_objfile->n_comp_units) | |
1803 | { | |
1804 | index -= dwarf2_per_objfile->n_comp_units; | |
1805 | return dwarf2_per_objfile->type_comp_units[index]; | |
1806 | } | |
1807 | return dwarf2_per_objfile->all_comp_units[index]; | |
1808 | } | |
1809 | ||
9291a0cd TT |
1810 | /* A helper function that knows how to read a 64-bit value in a way |
1811 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
1812 | otherwise. */ | |
2fdf6df6 | 1813 | |
9291a0cd TT |
1814 | static int |
1815 | extract_cu_value (const char *bytes, ULONGEST *result) | |
1816 | { | |
1817 | if (sizeof (ULONGEST) < 8) | |
1818 | { | |
1819 | int i; | |
1820 | ||
1821 | /* Ignore the upper 4 bytes if they are all zero. */ | |
1822 | for (i = 0; i < 4; ++i) | |
1823 | if (bytes[i + 4] != 0) | |
1824 | return 0; | |
1825 | ||
1826 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
1827 | } | |
1828 | else | |
1829 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
1830 | return 1; | |
1831 | } | |
1832 | ||
1833 | /* Read the CU list from the mapped index, and use it to create all | |
1834 | the CU objects for this objfile. Return 0 if something went wrong, | |
1835 | 1 if everything went ok. */ | |
2fdf6df6 | 1836 | |
9291a0cd | 1837 | static int |
1fd400ff TT |
1838 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
1839 | offset_type cu_list_elements) | |
9291a0cd TT |
1840 | { |
1841 | offset_type i; | |
9291a0cd TT |
1842 | |
1843 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
1844 | dwarf2_per_objfile->all_comp_units | |
1845 | = obstack_alloc (&objfile->objfile_obstack, | |
1846 | dwarf2_per_objfile->n_comp_units | |
1847 | * sizeof (struct dwarf2_per_cu_data *)); | |
1848 | ||
1849 | for (i = 0; i < cu_list_elements; i += 2) | |
1850 | { | |
1851 | struct dwarf2_per_cu_data *the_cu; | |
1852 | ULONGEST offset, length; | |
1853 | ||
1854 | if (!extract_cu_value (cu_list, &offset) | |
1855 | || !extract_cu_value (cu_list + 8, &length)) | |
1856 | return 0; | |
1857 | cu_list += 2 * 8; | |
1858 | ||
1859 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1860 | struct dwarf2_per_cu_data); | |
1861 | the_cu->offset = offset; | |
1862 | the_cu->length = length; | |
1863 | the_cu->objfile = objfile; | |
1864 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1865 | struct dwarf2_per_cu_quick_data); | |
1866 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
1867 | } | |
1868 | ||
1869 | return 1; | |
1870 | } | |
1871 | ||
1fd400ff | 1872 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 1873 | |
1fd400ff | 1874 | static int |
673bfd45 DE |
1875 | create_signatured_type_table_from_index (struct objfile *objfile, |
1876 | const gdb_byte *bytes, | |
1877 | offset_type elements) | |
1fd400ff TT |
1878 | { |
1879 | offset_type i; | |
673bfd45 | 1880 | htab_t sig_types_hash; |
1fd400ff TT |
1881 | |
1882 | dwarf2_per_objfile->n_type_comp_units = elements / 3; | |
1883 | dwarf2_per_objfile->type_comp_units | |
1884 | = obstack_alloc (&objfile->objfile_obstack, | |
1885 | dwarf2_per_objfile->n_type_comp_units | |
1886 | * sizeof (struct dwarf2_per_cu_data *)); | |
1887 | ||
673bfd45 | 1888 | sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff TT |
1889 | |
1890 | for (i = 0; i < elements; i += 3) | |
1891 | { | |
1892 | struct signatured_type *type_sig; | |
1893 | ULONGEST offset, type_offset, signature; | |
1894 | void **slot; | |
1895 | ||
1896 | if (!extract_cu_value (bytes, &offset) | |
1897 | || !extract_cu_value (bytes + 8, &type_offset)) | |
1898 | return 0; | |
1899 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
1900 | bytes += 3 * 8; | |
1901 | ||
1902 | type_sig = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1903 | struct signatured_type); | |
1904 | type_sig->signature = signature; | |
1905 | type_sig->offset = offset; | |
1906 | type_sig->type_offset = type_offset; | |
1907 | type_sig->per_cu.from_debug_types = 1; | |
1908 | type_sig->per_cu.offset = offset; | |
1909 | type_sig->per_cu.objfile = objfile; | |
1910 | type_sig->per_cu.v.quick | |
1911 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1912 | struct dwarf2_per_cu_quick_data); | |
1913 | ||
673bfd45 | 1914 | slot = htab_find_slot (sig_types_hash, type_sig, INSERT); |
1fd400ff TT |
1915 | *slot = type_sig; |
1916 | ||
1917 | dwarf2_per_objfile->type_comp_units[i / 3] = &type_sig->per_cu; | |
1918 | } | |
1919 | ||
673bfd45 | 1920 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
1921 | |
1922 | return 1; | |
1923 | } | |
1924 | ||
9291a0cd TT |
1925 | /* Read the address map data from the mapped index, and use it to |
1926 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 1927 | |
9291a0cd TT |
1928 | static void |
1929 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
1930 | { | |
1931 | const gdb_byte *iter, *end; | |
1932 | struct obstack temp_obstack; | |
1933 | struct addrmap *mutable_map; | |
1934 | struct cleanup *cleanup; | |
1935 | CORE_ADDR baseaddr; | |
1936 | ||
1937 | obstack_init (&temp_obstack); | |
1938 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
1939 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
1940 | ||
1941 | iter = index->address_table; | |
1942 | end = iter + index->address_table_size; | |
1943 | ||
1944 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1945 | ||
1946 | while (iter < end) | |
1947 | { | |
1948 | ULONGEST hi, lo, cu_index; | |
1949 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1950 | iter += 8; | |
1951 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1952 | iter += 8; | |
1953 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
1954 | iter += 4; | |
1955 | ||
1956 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 1957 | dw2_get_cu (cu_index)); |
9291a0cd TT |
1958 | } |
1959 | ||
1960 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
1961 | &objfile->objfile_obstack); | |
1962 | do_cleanups (cleanup); | |
1963 | } | |
1964 | ||
1965 | /* The hash function for strings in the mapped index. This is the | |
1966 | same as the hashtab.c hash function, but we keep a separate copy to | |
1967 | maintain control over the implementation. This is necessary | |
1968 | because the hash function is tied to the format of the mapped index | |
1969 | file. */ | |
2fdf6df6 | 1970 | |
9291a0cd TT |
1971 | static hashval_t |
1972 | mapped_index_string_hash (const void *p) | |
1973 | { | |
1974 | const unsigned char *str = (const unsigned char *) p; | |
1975 | hashval_t r = 0; | |
1976 | unsigned char c; | |
1977 | ||
1978 | while ((c = *str++) != 0) | |
1979 | r = r * 67 + c - 113; | |
1980 | ||
1981 | return r; | |
1982 | } | |
1983 | ||
1984 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
1985 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
1986 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
2fdf6df6 | 1987 | |
9291a0cd TT |
1988 | static int |
1989 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
1990 | offset_type **vec_out) | |
1991 | { | |
1992 | offset_type hash = mapped_index_string_hash (name); | |
1993 | offset_type slot, step; | |
1994 | ||
3876f04e DE |
1995 | slot = hash & (index->symbol_table_slots - 1); |
1996 | step = ((hash * 17) & (index->symbol_table_slots - 1)) | 1; | |
9291a0cd TT |
1997 | |
1998 | for (;;) | |
1999 | { | |
2000 | /* Convert a slot number to an offset into the table. */ | |
2001 | offset_type i = 2 * slot; | |
2002 | const char *str; | |
3876f04e | 2003 | if (index->symbol_table[i] == 0 && index->symbol_table[i + 1] == 0) |
9291a0cd TT |
2004 | return 0; |
2005 | ||
3876f04e | 2006 | str = index->constant_pool + MAYBE_SWAP (index->symbol_table[i]); |
9291a0cd TT |
2007 | if (!strcmp (name, str)) |
2008 | { | |
2009 | *vec_out = (offset_type *) (index->constant_pool | |
3876f04e | 2010 | + MAYBE_SWAP (index->symbol_table[i + 1])); |
9291a0cd TT |
2011 | return 1; |
2012 | } | |
2013 | ||
3876f04e | 2014 | slot = (slot + step) & (index->symbol_table_slots - 1); |
9291a0cd TT |
2015 | } |
2016 | } | |
2017 | ||
2018 | /* Read the index file. If everything went ok, initialize the "quick" | |
2019 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
2fdf6df6 | 2020 | |
9291a0cd TT |
2021 | static int |
2022 | dwarf2_read_index (struct objfile *objfile) | |
2023 | { | |
9291a0cd TT |
2024 | char *addr; |
2025 | struct mapped_index *map; | |
b3b272e1 | 2026 | offset_type *metadata; |
ac0b195c KW |
2027 | const gdb_byte *cu_list; |
2028 | const gdb_byte *types_list = NULL; | |
2029 | offset_type version, cu_list_elements; | |
2030 | offset_type types_list_elements = 0; | |
1fd400ff | 2031 | int i; |
9291a0cd | 2032 | |
9e0ac564 | 2033 | if (dwarf2_section_empty_p (&dwarf2_per_objfile->gdb_index)) |
9291a0cd | 2034 | return 0; |
82430852 JK |
2035 | |
2036 | /* Older elfutils strip versions could keep the section in the main | |
2037 | executable while splitting it for the separate debug info file. */ | |
2038 | if ((bfd_get_file_flags (dwarf2_per_objfile->gdb_index.asection) | |
2039 | & SEC_HAS_CONTENTS) == 0) | |
2040 | return 0; | |
2041 | ||
9291a0cd TT |
2042 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); |
2043 | ||
2044 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
2045 | /* Version check. */ | |
1fd400ff | 2046 | version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 2047 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
831adc1f JK |
2048 | causes the index to behave very poorly for certain requests. Version 4 |
2049 | contained incomplete addrmap. So, it seems better to just ignore such | |
2050 | indices. */ | |
2051 | if (version < 4) | |
9291a0cd | 2052 | return 0; |
594e8718 JK |
2053 | /* Indexes with higher version than the one supported by GDB may be no |
2054 | longer backward compatible. */ | |
831adc1f | 2055 | if (version > 4) |
594e8718 | 2056 | return 0; |
9291a0cd TT |
2057 | |
2058 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
b3b272e1 | 2059 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
2060 | |
2061 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
2062 | |
2063 | i = 0; | |
2064 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
2065 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 2066 | / 8); |
1fd400ff TT |
2067 | ++i; |
2068 | ||
987d643c TT |
2069 | types_list = addr + MAYBE_SWAP (metadata[i]); |
2070 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
2071 | - MAYBE_SWAP (metadata[i])) | |
2072 | / 8); | |
2073 | ++i; | |
1fd400ff TT |
2074 | |
2075 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
2076 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
2077 | - MAYBE_SWAP (metadata[i])); | |
2078 | ++i; | |
2079 | ||
3876f04e DE |
2080 | map->symbol_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); |
2081 | map->symbol_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
2082 | - MAYBE_SWAP (metadata[i])) | |
2083 | / (2 * sizeof (offset_type))); | |
1fd400ff | 2084 | ++i; |
9291a0cd | 2085 | |
1fd400ff TT |
2086 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
2087 | ||
2088 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) | |
2089 | return 0; | |
2090 | ||
987d643c | 2091 | if (types_list_elements |
673bfd45 DE |
2092 | && !create_signatured_type_table_from_index (objfile, types_list, |
2093 | types_list_elements)) | |
9291a0cd TT |
2094 | return 0; |
2095 | ||
2096 | create_addrmap_from_index (objfile, map); | |
2097 | ||
2098 | dwarf2_per_objfile->index_table = map; | |
2099 | dwarf2_per_objfile->using_index = 1; | |
7b9f3c50 DE |
2100 | dwarf2_per_objfile->quick_file_names_table = |
2101 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd TT |
2102 | |
2103 | return 1; | |
2104 | } | |
2105 | ||
2106 | /* A helper for the "quick" functions which sets the global | |
2107 | dwarf2_per_objfile according to OBJFILE. */ | |
2fdf6df6 | 2108 | |
9291a0cd TT |
2109 | static void |
2110 | dw2_setup (struct objfile *objfile) | |
2111 | { | |
2112 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
2113 | gdb_assert (dwarf2_per_objfile); | |
2114 | } | |
2115 | ||
2116 | /* A helper for the "quick" functions which attempts to read the line | |
2117 | table for THIS_CU. */ | |
2fdf6df6 | 2118 | |
7b9f3c50 DE |
2119 | static struct quick_file_names * |
2120 | dw2_get_file_names (struct objfile *objfile, | |
2121 | struct dwarf2_per_cu_data *this_cu) | |
9291a0cd TT |
2122 | { |
2123 | bfd *abfd = objfile->obfd; | |
7b9f3c50 | 2124 | struct line_header *lh; |
9291a0cd TT |
2125 | struct attribute *attr; |
2126 | struct cleanup *cleanups; | |
2127 | struct die_info *comp_unit_die; | |
36374493 | 2128 | struct dwarf2_section_info* sec; |
9291a0cd TT |
2129 | gdb_byte *beg_of_comp_unit, *info_ptr, *buffer; |
2130 | int has_children, i; | |
2131 | struct dwarf2_cu cu; | |
2132 | unsigned int bytes_read, buffer_size; | |
2133 | struct die_reader_specs reader_specs; | |
2134 | char *name, *comp_dir; | |
7b9f3c50 DE |
2135 | void **slot; |
2136 | struct quick_file_names *qfn; | |
2137 | unsigned int line_offset; | |
9291a0cd | 2138 | |
7b9f3c50 DE |
2139 | if (this_cu->v.quick->file_names != NULL) |
2140 | return this_cu->v.quick->file_names; | |
2141 | /* If we know there is no line data, no point in looking again. */ | |
2142 | if (this_cu->v.quick->no_file_data) | |
2143 | return NULL; | |
9291a0cd | 2144 | |
9816fde3 | 2145 | init_one_comp_unit (&cu, objfile); |
9291a0cd TT |
2146 | cleanups = make_cleanup (free_stack_comp_unit, &cu); |
2147 | ||
36374493 DE |
2148 | if (this_cu->from_debug_types) |
2149 | sec = &dwarf2_per_objfile->types; | |
2150 | else | |
2151 | sec = &dwarf2_per_objfile->info; | |
2152 | dwarf2_read_section (objfile, sec); | |
2153 | buffer_size = sec->size; | |
2154 | buffer = sec->buffer; | |
9291a0cd TT |
2155 | info_ptr = buffer + this_cu->offset; |
2156 | beg_of_comp_unit = info_ptr; | |
2157 | ||
2158 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, | |
2159 | buffer, buffer_size, | |
2160 | abfd); | |
2161 | ||
2162 | /* Complete the cu_header. */ | |
2163 | cu.header.offset = beg_of_comp_unit - buffer; | |
2164 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
2165 | ||
2166 | this_cu->cu = &cu; | |
2167 | cu.per_cu = this_cu; | |
2168 | ||
2169 | dwarf2_read_abbrevs (abfd, &cu); | |
2170 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
2171 | ||
2172 | if (this_cu->from_debug_types) | |
2173 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
2174 | init_cu_die_reader (&reader_specs, &cu); | |
e8e80198 MS |
2175 | read_full_die (&reader_specs, &comp_unit_die, info_ptr, |
2176 | &has_children); | |
9291a0cd | 2177 | |
7b9f3c50 DE |
2178 | lh = NULL; |
2179 | slot = NULL; | |
2180 | line_offset = 0; | |
9291a0cd TT |
2181 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, &cu); |
2182 | if (attr) | |
2183 | { | |
7b9f3c50 DE |
2184 | struct quick_file_names find_entry; |
2185 | ||
2186 | line_offset = DW_UNSND (attr); | |
2187 | ||
2188 | /* We may have already read in this line header (TU line header sharing). | |
2189 | If we have we're done. */ | |
2190 | find_entry.offset = line_offset; | |
2191 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, | |
2192 | &find_entry, INSERT); | |
2193 | if (*slot != NULL) | |
2194 | { | |
2195 | do_cleanups (cleanups); | |
2196 | this_cu->v.quick->file_names = *slot; | |
2197 | return *slot; | |
2198 | } | |
2199 | ||
9291a0cd TT |
2200 | lh = dwarf_decode_line_header (line_offset, abfd, &cu); |
2201 | } | |
2202 | if (lh == NULL) | |
2203 | { | |
2204 | do_cleanups (cleanups); | |
7b9f3c50 DE |
2205 | this_cu->v.quick->no_file_data = 1; |
2206 | return NULL; | |
9291a0cd TT |
2207 | } |
2208 | ||
7b9f3c50 DE |
2209 | qfn = obstack_alloc (&objfile->objfile_obstack, sizeof (*qfn)); |
2210 | qfn->offset = line_offset; | |
2211 | gdb_assert (slot != NULL); | |
2212 | *slot = qfn; | |
9291a0cd | 2213 | |
7b9f3c50 | 2214 | find_file_and_directory (comp_unit_die, &cu, &name, &comp_dir); |
9291a0cd | 2215 | |
7b9f3c50 DE |
2216 | qfn->num_file_names = lh->num_file_names; |
2217 | qfn->file_names = obstack_alloc (&objfile->objfile_obstack, | |
2218 | lh->num_file_names * sizeof (char *)); | |
9291a0cd | 2219 | for (i = 0; i < lh->num_file_names; ++i) |
7b9f3c50 DE |
2220 | qfn->file_names[i] = file_full_name (i + 1, lh, comp_dir); |
2221 | qfn->real_names = NULL; | |
9291a0cd | 2222 | |
7b9f3c50 | 2223 | free_line_header (lh); |
9291a0cd | 2224 | do_cleanups (cleanups); |
7b9f3c50 DE |
2225 | |
2226 | this_cu->v.quick->file_names = qfn; | |
2227 | return qfn; | |
9291a0cd TT |
2228 | } |
2229 | ||
2230 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 2231 | real path for a given file name from the line table. */ |
2fdf6df6 | 2232 | |
9291a0cd | 2233 | static const char * |
7b9f3c50 DE |
2234 | dw2_get_real_path (struct objfile *objfile, |
2235 | struct quick_file_names *qfn, int index) | |
9291a0cd | 2236 | { |
7b9f3c50 DE |
2237 | if (qfn->real_names == NULL) |
2238 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2239 | qfn->num_file_names, sizeof (char *)); | |
9291a0cd | 2240 | |
7b9f3c50 DE |
2241 | if (qfn->real_names[index] == NULL) |
2242 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]); | |
9291a0cd | 2243 | |
7b9f3c50 | 2244 | return qfn->real_names[index]; |
9291a0cd TT |
2245 | } |
2246 | ||
2247 | static struct symtab * | |
2248 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2249 | { | |
2250 | int index; | |
ae2de4f8 | 2251 | |
9291a0cd TT |
2252 | dw2_setup (objfile); |
2253 | index = dwarf2_per_objfile->n_comp_units - 1; | |
1fd400ff | 2254 | return dw2_instantiate_symtab (objfile, dw2_get_cu (index)); |
9291a0cd TT |
2255 | } |
2256 | ||
7b9f3c50 DE |
2257 | /* Traversal function for dw2_forget_cached_source_info. */ |
2258 | ||
2259 | static int | |
2260 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 2261 | { |
7b9f3c50 | 2262 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 2263 | |
7b9f3c50 | 2264 | if (file_data->real_names) |
9291a0cd | 2265 | { |
7b9f3c50 | 2266 | int i; |
9291a0cd | 2267 | |
7b9f3c50 | 2268 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 2269 | { |
7b9f3c50 DE |
2270 | xfree ((void*) file_data->real_names[i]); |
2271 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
2272 | } |
2273 | } | |
7b9f3c50 DE |
2274 | |
2275 | return 1; | |
2276 | } | |
2277 | ||
2278 | static void | |
2279 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2280 | { | |
2281 | dw2_setup (objfile); | |
2282 | ||
2283 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
2284 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
2285 | } |
2286 | ||
2287 | static int | |
2288 | dw2_lookup_symtab (struct objfile *objfile, const char *name, | |
2289 | const char *full_path, const char *real_path, | |
2290 | struct symtab **result) | |
2291 | { | |
2292 | int i; | |
2293 | int check_basename = lbasename (name) == name; | |
2294 | struct dwarf2_per_cu_data *base_cu = NULL; | |
2295 | ||
2296 | dw2_setup (objfile); | |
ae2de4f8 | 2297 | |
1fd400ff TT |
2298 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2299 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2300 | { |
2301 | int j; | |
e254ef6a | 2302 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2303 | struct quick_file_names *file_data; |
9291a0cd | 2304 | |
e254ef6a | 2305 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2306 | continue; |
2307 | ||
7b9f3c50 DE |
2308 | file_data = dw2_get_file_names (objfile, per_cu); |
2309 | if (file_data == NULL) | |
9291a0cd TT |
2310 | continue; |
2311 | ||
7b9f3c50 | 2312 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2313 | { |
7b9f3c50 | 2314 | const char *this_name = file_data->file_names[j]; |
9291a0cd TT |
2315 | |
2316 | if (FILENAME_CMP (name, this_name) == 0) | |
2317 | { | |
e254ef6a | 2318 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2319 | return 1; |
2320 | } | |
2321 | ||
2322 | if (check_basename && ! base_cu | |
2323 | && FILENAME_CMP (lbasename (this_name), name) == 0) | |
e254ef6a | 2324 | base_cu = per_cu; |
9291a0cd TT |
2325 | |
2326 | if (full_path != NULL) | |
2327 | { | |
7b9f3c50 DE |
2328 | const char *this_real_name = dw2_get_real_path (objfile, |
2329 | file_data, j); | |
9291a0cd | 2330 | |
7b9f3c50 DE |
2331 | if (this_real_name != NULL |
2332 | && FILENAME_CMP (full_path, this_real_name) == 0) | |
9291a0cd | 2333 | { |
e254ef6a | 2334 | *result = dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2335 | return 1; |
2336 | } | |
2337 | } | |
2338 | ||
2339 | if (real_path != NULL) | |
2340 | { | |
7b9f3c50 DE |
2341 | const char *this_real_name = dw2_get_real_path (objfile, |
2342 | file_data, j); | |
9291a0cd | 2343 | |
7b9f3c50 DE |
2344 | if (this_real_name != NULL |
2345 | && FILENAME_CMP (real_path, this_real_name) == 0) | |
9291a0cd | 2346 | { |
74dd2ca6 DE |
2347 | *result = dw2_instantiate_symtab (objfile, per_cu); |
2348 | return 1; | |
9291a0cd TT |
2349 | } |
2350 | } | |
2351 | } | |
2352 | } | |
2353 | ||
2354 | if (base_cu) | |
2355 | { | |
2356 | *result = dw2_instantiate_symtab (objfile, base_cu); | |
2357 | return 1; | |
2358 | } | |
2359 | ||
2360 | return 0; | |
2361 | } | |
2362 | ||
2363 | static struct symtab * | |
2364 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2365 | const char *name, domain_enum domain) | |
2366 | { | |
774b6a14 | 2367 | /* We do all the work in the pre_expand_symtabs_matching hook |
9291a0cd TT |
2368 | instead. */ |
2369 | return NULL; | |
2370 | } | |
2371 | ||
2372 | /* A helper function that expands all symtabs that hold an object | |
2373 | named NAME. */ | |
2fdf6df6 | 2374 | |
9291a0cd TT |
2375 | static void |
2376 | dw2_do_expand_symtabs_matching (struct objfile *objfile, const char *name) | |
2377 | { | |
2378 | dw2_setup (objfile); | |
2379 | ||
ae2de4f8 | 2380 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd TT |
2381 | if (dwarf2_per_objfile->index_table) |
2382 | { | |
2383 | offset_type *vec; | |
2384 | ||
2385 | if (find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2386 | name, &vec)) | |
2387 | { | |
2388 | offset_type i, len = MAYBE_SWAP (*vec); | |
2389 | for (i = 0; i < len; ++i) | |
2390 | { | |
2391 | offset_type cu_index = MAYBE_SWAP (vec[i + 1]); | |
e254ef6a | 2392 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (cu_index); |
1fd400ff | 2393 | |
e254ef6a | 2394 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2395 | } |
2396 | } | |
2397 | } | |
2398 | } | |
2399 | ||
774b6a14 TT |
2400 | static void |
2401 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
2402 | int kind, const char *name, | |
2403 | domain_enum domain) | |
9291a0cd | 2404 | { |
774b6a14 | 2405 | dw2_do_expand_symtabs_matching (objfile, name); |
9291a0cd TT |
2406 | } |
2407 | ||
2408 | static void | |
2409 | dw2_print_stats (struct objfile *objfile) | |
2410 | { | |
2411 | int i, count; | |
2412 | ||
2413 | dw2_setup (objfile); | |
2414 | count = 0; | |
1fd400ff TT |
2415 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2416 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2417 | { |
e254ef6a | 2418 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2419 | |
e254ef6a | 2420 | if (!per_cu->v.quick->symtab) |
9291a0cd TT |
2421 | ++count; |
2422 | } | |
2423 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2424 | } | |
2425 | ||
2426 | static void | |
2427 | dw2_dump (struct objfile *objfile) | |
2428 | { | |
2429 | /* Nothing worth printing. */ | |
2430 | } | |
2431 | ||
2432 | static void | |
2433 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2434 | struct section_offsets *delta) | |
2435 | { | |
2436 | /* There's nothing to relocate here. */ | |
2437 | } | |
2438 | ||
2439 | static void | |
2440 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2441 | const char *func_name) | |
2442 | { | |
2443 | dw2_do_expand_symtabs_matching (objfile, func_name); | |
2444 | } | |
2445 | ||
2446 | static void | |
2447 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2448 | { | |
2449 | int i; | |
2450 | ||
2451 | dw2_setup (objfile); | |
1fd400ff TT |
2452 | |
2453 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2454 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2455 | { |
e254ef6a | 2456 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2457 | |
e254ef6a | 2458 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2459 | } |
2460 | } | |
2461 | ||
2462 | static void | |
2463 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2464 | const char *filename) | |
2465 | { | |
2466 | int i; | |
2467 | ||
2468 | dw2_setup (objfile); | |
d4637a04 DE |
2469 | |
2470 | /* We don't need to consider type units here. | |
2471 | This is only called for examining code, e.g. expand_line_sal. | |
2472 | There can be an order of magnitude (or more) more type units | |
2473 | than comp units, and we avoid them if we can. */ | |
2474 | ||
2475 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
9291a0cd TT |
2476 | { |
2477 | int j; | |
e254ef6a | 2478 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2479 | struct quick_file_names *file_data; |
9291a0cd | 2480 | |
e254ef6a | 2481 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2482 | continue; |
2483 | ||
7b9f3c50 DE |
2484 | file_data = dw2_get_file_names (objfile, per_cu); |
2485 | if (file_data == NULL) | |
9291a0cd TT |
2486 | continue; |
2487 | ||
7b9f3c50 | 2488 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2489 | { |
7b9f3c50 | 2490 | const char *this_name = file_data->file_names[j]; |
1ef75ecc | 2491 | if (FILENAME_CMP (this_name, filename) == 0) |
9291a0cd | 2492 | { |
e254ef6a | 2493 | dw2_instantiate_symtab (objfile, per_cu); |
9291a0cd TT |
2494 | break; |
2495 | } | |
2496 | } | |
2497 | } | |
2498 | } | |
2499 | ||
dd786858 | 2500 | static const char * |
9291a0cd TT |
2501 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2502 | { | |
e254ef6a | 2503 | struct dwarf2_per_cu_data *per_cu; |
9291a0cd | 2504 | offset_type *vec; |
7b9f3c50 | 2505 | struct quick_file_names *file_data; |
9291a0cd TT |
2506 | |
2507 | dw2_setup (objfile); | |
2508 | ||
ae2de4f8 | 2509 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd TT |
2510 | if (!dwarf2_per_objfile->index_table) |
2511 | return NULL; | |
2512 | ||
2513 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2514 | name, &vec)) | |
2515 | return NULL; | |
2516 | ||
2517 | /* Note that this just looks at the very first one named NAME -- but | |
2518 | actually we are looking for a function. find_main_filename | |
2519 | should be rewritten so that it doesn't require a custom hook. It | |
2520 | could just use the ordinary symbol tables. */ | |
2521 | /* vec[0] is the length, which must always be >0. */ | |
e254ef6a | 2522 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[1])); |
9291a0cd | 2523 | |
7b9f3c50 DE |
2524 | file_data = dw2_get_file_names (objfile, per_cu); |
2525 | if (file_data == NULL) | |
9291a0cd TT |
2526 | return NULL; |
2527 | ||
7b9f3c50 | 2528 | return file_data->file_names[file_data->num_file_names - 1]; |
9291a0cd TT |
2529 | } |
2530 | ||
2531 | static void | |
40658b94 PH |
2532 | dw2_map_matching_symbols (const char * name, domain_enum namespace, |
2533 | struct objfile *objfile, int global, | |
2534 | int (*callback) (struct block *, | |
2535 | struct symbol *, void *), | |
2edb89d3 JK |
2536 | void *data, symbol_compare_ftype *match, |
2537 | symbol_compare_ftype *ordered_compare) | |
9291a0cd | 2538 | { |
40658b94 | 2539 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
2540 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
2541 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
2542 | } |
2543 | ||
2544 | static void | |
2545 | dw2_expand_symtabs_matching (struct objfile *objfile, | |
2546 | int (*file_matcher) (const char *, void *), | |
2547 | int (*name_matcher) (const char *, void *), | |
2548 | domain_enum kind, | |
2549 | void *data) | |
2550 | { | |
2551 | int i; | |
2552 | offset_type iter; | |
4b5246aa | 2553 | struct mapped_index *index; |
9291a0cd TT |
2554 | |
2555 | dw2_setup (objfile); | |
ae2de4f8 DE |
2556 | |
2557 | /* index_table is NULL if OBJF_READNOW. */ | |
9291a0cd TT |
2558 | if (!dwarf2_per_objfile->index_table) |
2559 | return; | |
4b5246aa | 2560 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2561 | |
1fd400ff TT |
2562 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2563 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2564 | { |
2565 | int j; | |
e254ef6a | 2566 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2567 | struct quick_file_names *file_data; |
9291a0cd | 2568 | |
e254ef6a DE |
2569 | per_cu->v.quick->mark = 0; |
2570 | if (per_cu->v.quick->symtab) | |
9291a0cd TT |
2571 | continue; |
2572 | ||
7b9f3c50 DE |
2573 | file_data = dw2_get_file_names (objfile, per_cu); |
2574 | if (file_data == NULL) | |
9291a0cd TT |
2575 | continue; |
2576 | ||
7b9f3c50 | 2577 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2578 | { |
7b9f3c50 | 2579 | if (file_matcher (file_data->file_names[j], data)) |
9291a0cd | 2580 | { |
e254ef6a | 2581 | per_cu->v.quick->mark = 1; |
9291a0cd TT |
2582 | break; |
2583 | } | |
2584 | } | |
2585 | } | |
2586 | ||
3876f04e | 2587 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
2588 | { |
2589 | offset_type idx = 2 * iter; | |
2590 | const char *name; | |
2591 | offset_type *vec, vec_len, vec_idx; | |
2592 | ||
3876f04e | 2593 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
2594 | continue; |
2595 | ||
3876f04e | 2596 | name = index->constant_pool + MAYBE_SWAP (index->symbol_table[idx]); |
9291a0cd TT |
2597 | |
2598 | if (! (*name_matcher) (name, data)) | |
2599 | continue; | |
2600 | ||
2601 | /* The name was matched, now expand corresponding CUs that were | |
2602 | marked. */ | |
4b5246aa | 2603 | vec = (offset_type *) (index->constant_pool |
3876f04e | 2604 | + MAYBE_SWAP (index->symbol_table[idx + 1])); |
9291a0cd TT |
2605 | vec_len = MAYBE_SWAP (vec[0]); |
2606 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
2607 | { | |
e254ef6a | 2608 | struct dwarf2_per_cu_data *per_cu; |
1fd400ff | 2609 | |
e254ef6a DE |
2610 | per_cu = dw2_get_cu (MAYBE_SWAP (vec[vec_idx + 1])); |
2611 | if (per_cu->v.quick->mark) | |
2612 | dw2_instantiate_symtab (objfile, per_cu); | |
9291a0cd TT |
2613 | } |
2614 | } | |
2615 | } | |
2616 | ||
2617 | static struct symtab * | |
2618 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
2619 | struct minimal_symbol *msymbol, | |
2620 | CORE_ADDR pc, | |
2621 | struct obj_section *section, | |
2622 | int warn_if_readin) | |
2623 | { | |
2624 | struct dwarf2_per_cu_data *data; | |
2625 | ||
2626 | dw2_setup (objfile); | |
2627 | ||
2628 | if (!objfile->psymtabs_addrmap) | |
2629 | return NULL; | |
2630 | ||
2631 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
2632 | if (!data) | |
2633 | return NULL; | |
2634 | ||
2635 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 2636 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
2637 | paddress (get_objfile_arch (objfile), pc)); |
2638 | ||
2639 | return dw2_instantiate_symtab (objfile, data); | |
2640 | } | |
2641 | ||
2642 | static void | |
2643 | dw2_map_symbol_names (struct objfile *objfile, | |
2644 | void (*fun) (const char *, void *), | |
2645 | void *data) | |
2646 | { | |
2647 | offset_type iter; | |
4b5246aa TT |
2648 | struct mapped_index *index; |
2649 | ||
9291a0cd TT |
2650 | dw2_setup (objfile); |
2651 | ||
ae2de4f8 | 2652 | /* index_table is NULL if OBJF_READNOW. */ |
9291a0cd TT |
2653 | if (!dwarf2_per_objfile->index_table) |
2654 | return; | |
4b5246aa | 2655 | index = dwarf2_per_objfile->index_table; |
9291a0cd | 2656 | |
3876f04e | 2657 | for (iter = 0; iter < index->symbol_table_slots; ++iter) |
9291a0cd TT |
2658 | { |
2659 | offset_type idx = 2 * iter; | |
2660 | const char *name; | |
2661 | offset_type *vec, vec_len, vec_idx; | |
2662 | ||
3876f04e | 2663 | if (index->symbol_table[idx] == 0 && index->symbol_table[idx + 1] == 0) |
9291a0cd TT |
2664 | continue; |
2665 | ||
3876f04e | 2666 | name = (index->constant_pool + MAYBE_SWAP (index->symbol_table[idx])); |
9291a0cd TT |
2667 | |
2668 | (*fun) (name, data); | |
2669 | } | |
2670 | } | |
2671 | ||
2672 | static void | |
2673 | dw2_map_symbol_filenames (struct objfile *objfile, | |
2674 | void (*fun) (const char *, const char *, void *), | |
2675 | void *data) | |
2676 | { | |
2677 | int i; | |
2678 | ||
2679 | dw2_setup (objfile); | |
ae2de4f8 | 2680 | |
1fd400ff TT |
2681 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2682 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2683 | { |
2684 | int j; | |
e254ef6a | 2685 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
7b9f3c50 | 2686 | struct quick_file_names *file_data; |
9291a0cd | 2687 | |
e254ef6a | 2688 | if (per_cu->v.quick->symtab) |
9291a0cd TT |
2689 | continue; |
2690 | ||
7b9f3c50 DE |
2691 | file_data = dw2_get_file_names (objfile, per_cu); |
2692 | if (file_data == NULL) | |
9291a0cd TT |
2693 | continue; |
2694 | ||
7b9f3c50 | 2695 | for (j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 2696 | { |
7b9f3c50 DE |
2697 | const char *this_real_name = dw2_get_real_path (objfile, file_data, |
2698 | j); | |
2699 | (*fun) (file_data->file_names[j], this_real_name, data); | |
9291a0cd TT |
2700 | } |
2701 | } | |
2702 | } | |
2703 | ||
2704 | static int | |
2705 | dw2_has_symbols (struct objfile *objfile) | |
2706 | { | |
2707 | return 1; | |
2708 | } | |
2709 | ||
2710 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
2711 | { | |
2712 | dw2_has_symbols, | |
2713 | dw2_find_last_source_symtab, | |
2714 | dw2_forget_cached_source_info, | |
2715 | dw2_lookup_symtab, | |
2716 | dw2_lookup_symbol, | |
774b6a14 | 2717 | dw2_pre_expand_symtabs_matching, |
9291a0cd TT |
2718 | dw2_print_stats, |
2719 | dw2_dump, | |
2720 | dw2_relocate, | |
2721 | dw2_expand_symtabs_for_function, | |
2722 | dw2_expand_all_symtabs, | |
2723 | dw2_expand_symtabs_with_filename, | |
2724 | dw2_find_symbol_file, | |
40658b94 | 2725 | dw2_map_matching_symbols, |
9291a0cd TT |
2726 | dw2_expand_symtabs_matching, |
2727 | dw2_find_pc_sect_symtab, | |
2728 | dw2_map_symbol_names, | |
2729 | dw2_map_symbol_filenames | |
2730 | }; | |
2731 | ||
2732 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
2733 | file will use psymtabs, or 1 if using the GNU index. */ | |
2734 | ||
2735 | int | |
2736 | dwarf2_initialize_objfile (struct objfile *objfile) | |
2737 | { | |
2738 | /* If we're about to read full symbols, don't bother with the | |
2739 | indices. In this case we also don't care if some other debug | |
2740 | format is making psymtabs, because they are all about to be | |
2741 | expanded anyway. */ | |
2742 | if ((objfile->flags & OBJF_READNOW)) | |
2743 | { | |
2744 | int i; | |
2745 | ||
2746 | dwarf2_per_objfile->using_index = 1; | |
2747 | create_all_comp_units (objfile); | |
1fd400ff | 2748 | create_debug_types_hash_table (objfile); |
7b9f3c50 DE |
2749 | dwarf2_per_objfile->quick_file_names_table = |
2750 | create_quick_file_names_table (dwarf2_per_objfile->n_comp_units); | |
9291a0cd | 2751 | |
1fd400ff TT |
2752 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2753 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2754 | { |
e254ef6a | 2755 | struct dwarf2_per_cu_data *per_cu = dw2_get_cu (i); |
9291a0cd | 2756 | |
e254ef6a DE |
2757 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
2758 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
2759 | } |
2760 | ||
2761 | /* Return 1 so that gdb sees the "quick" functions. However, | |
2762 | these functions will be no-ops because we will have expanded | |
2763 | all symtabs. */ | |
2764 | return 1; | |
2765 | } | |
2766 | ||
2767 | if (dwarf2_read_index (objfile)) | |
2768 | return 1; | |
2769 | ||
9291a0cd TT |
2770 | return 0; |
2771 | } | |
2772 | ||
2773 | \f | |
2774 | ||
dce234bc PP |
2775 | /* Build a partial symbol table. */ |
2776 | ||
2777 | void | |
f29dff0a | 2778 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 2779 | { |
f29dff0a | 2780 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
2781 | { |
2782 | init_psymbol_list (objfile, 1024); | |
2783 | } | |
2784 | ||
d146bf1e | 2785 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 2786 | } |
c906108c | 2787 | |
45452591 DE |
2788 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
2789 | ||
2790 | static inline int | |
2791 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
2792 | { | |
2793 | unsigned int bottom = cu_header->offset; | |
2794 | unsigned int top = (cu_header->offset | |
2795 | + cu_header->length | |
2796 | + cu_header->initial_length_size); | |
9a619af0 | 2797 | |
45452591 DE |
2798 | return (offset >= bottom && offset < top); |
2799 | } | |
2800 | ||
93311388 DE |
2801 | /* Read in the comp unit header information from the debug_info at info_ptr. |
2802 | NOTE: This leaves members offset, first_die_offset to be filled in | |
2803 | by the caller. */ | |
107d2387 | 2804 | |
fe1b8b76 | 2805 | static gdb_byte * |
107d2387 | 2806 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 2807 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
2808 | { |
2809 | int signed_addr; | |
891d2f0b | 2810 | unsigned int bytes_read; |
c764a876 DE |
2811 | |
2812 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
2813 | cu_header->initial_length_size = bytes_read; | |
2814 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 2815 | info_ptr += bytes_read; |
107d2387 AC |
2816 | cu_header->version = read_2_bytes (abfd, info_ptr); |
2817 | info_ptr += 2; | |
613e1657 | 2818 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
c764a876 | 2819 | &bytes_read); |
613e1657 | 2820 | info_ptr += bytes_read; |
107d2387 AC |
2821 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
2822 | info_ptr += 1; | |
2823 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
2824 | if (signed_addr < 0) | |
8e65ff28 | 2825 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2826 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 2827 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 2828 | |
107d2387 AC |
2829 | return info_ptr; |
2830 | } | |
2831 | ||
fe1b8b76 JB |
2832 | static gdb_byte * |
2833 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
93311388 | 2834 | gdb_byte *buffer, unsigned int buffer_size, |
72bf9492 DJ |
2835 | bfd *abfd) |
2836 | { | |
fe1b8b76 | 2837 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
2838 | |
2839 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
2840 | ||
2dc7f7b3 | 2841 | if (header->version != 2 && header->version != 3 && header->version != 4) |
8a3fe4f8 | 2842 | error (_("Dwarf Error: wrong version in compilation unit header " |
2dc7f7b3 TT |
2843 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, |
2844 | bfd_get_filename (abfd)); | |
72bf9492 | 2845 | |
9e0ac564 TT |
2846 | if (header->abbrev_offset |
2847 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, | |
2848 | &dwarf2_per_objfile->abbrev)) | |
8a3fe4f8 AC |
2849 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
2850 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 | 2851 | (long) header->abbrev_offset, |
93311388 | 2852 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2853 | bfd_get_filename (abfd)); |
2854 | ||
2855 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
93311388 | 2856 | > buffer + buffer_size) |
8a3fe4f8 AC |
2857 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
2858 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 | 2859 | (long) header->length, |
93311388 | 2860 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2861 | bfd_get_filename (abfd)); |
2862 | ||
2863 | return info_ptr; | |
2864 | } | |
2865 | ||
348e048f DE |
2866 | /* Read in the types comp unit header information from .debug_types entry at |
2867 | types_ptr. The result is a pointer to one past the end of the header. */ | |
2868 | ||
2869 | static gdb_byte * | |
2870 | read_type_comp_unit_head (struct comp_unit_head *cu_header, | |
2871 | ULONGEST *signature, | |
2872 | gdb_byte *types_ptr, bfd *abfd) | |
2873 | { | |
348e048f DE |
2874 | gdb_byte *initial_types_ptr = types_ptr; |
2875 | ||
6e70227d | 2876 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
fa238c03 | 2877 | &dwarf2_per_objfile->types); |
348e048f DE |
2878 | cu_header->offset = types_ptr - dwarf2_per_objfile->types.buffer; |
2879 | ||
2880 | types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd); | |
2881 | ||
2882 | *signature = read_8_bytes (abfd, types_ptr); | |
2883 | types_ptr += 8; | |
2884 | types_ptr += cu_header->offset_size; | |
2885 | cu_header->first_die_offset = types_ptr - initial_types_ptr; | |
2886 | ||
2887 | return types_ptr; | |
2888 | } | |
2889 | ||
aaa75496 JB |
2890 | /* Allocate a new partial symtab for file named NAME and mark this new |
2891 | partial symtab as being an include of PST. */ | |
2892 | ||
2893 | static void | |
2894 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
2895 | struct objfile *objfile) | |
2896 | { | |
2897 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
2898 | ||
2899 | subpst->section_offsets = pst->section_offsets; | |
2900 | subpst->textlow = 0; | |
2901 | subpst->texthigh = 0; | |
2902 | ||
2903 | subpst->dependencies = (struct partial_symtab **) | |
2904 | obstack_alloc (&objfile->objfile_obstack, | |
2905 | sizeof (struct partial_symtab *)); | |
2906 | subpst->dependencies[0] = pst; | |
2907 | subpst->number_of_dependencies = 1; | |
2908 | ||
2909 | subpst->globals_offset = 0; | |
2910 | subpst->n_global_syms = 0; | |
2911 | subpst->statics_offset = 0; | |
2912 | subpst->n_static_syms = 0; | |
2913 | subpst->symtab = NULL; | |
2914 | subpst->read_symtab = pst->read_symtab; | |
2915 | subpst->readin = 0; | |
2916 | ||
2917 | /* No private part is necessary for include psymtabs. This property | |
2918 | can be used to differentiate between such include psymtabs and | |
10b3939b | 2919 | the regular ones. */ |
58a9656e | 2920 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
2921 | } |
2922 | ||
2923 | /* Read the Line Number Program data and extract the list of files | |
2924 | included by the source file represented by PST. Build an include | |
d85a05f0 | 2925 | partial symtab for each of these included files. */ |
aaa75496 JB |
2926 | |
2927 | static void | |
2928 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
d85a05f0 | 2929 | struct die_info *die, |
aaa75496 JB |
2930 | struct partial_symtab *pst) |
2931 | { | |
2932 | struct objfile *objfile = cu->objfile; | |
2933 | bfd *abfd = objfile->obfd; | |
d85a05f0 DJ |
2934 | struct line_header *lh = NULL; |
2935 | struct attribute *attr; | |
aaa75496 | 2936 | |
d85a05f0 DJ |
2937 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
2938 | if (attr) | |
2939 | { | |
2940 | unsigned int line_offset = DW_UNSND (attr); | |
9a619af0 | 2941 | |
d85a05f0 DJ |
2942 | lh = dwarf_decode_line_header (line_offset, abfd, cu); |
2943 | } | |
aaa75496 JB |
2944 | if (lh == NULL) |
2945 | return; /* No linetable, so no includes. */ | |
2946 | ||
c6da4cef DE |
2947 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). */ |
2948 | dwarf_decode_lines (lh, pst->dirname, abfd, cu, pst); | |
aaa75496 JB |
2949 | |
2950 | free_line_header (lh); | |
2951 | } | |
2952 | ||
348e048f DE |
2953 | static hashval_t |
2954 | hash_type_signature (const void *item) | |
2955 | { | |
2956 | const struct signatured_type *type_sig = item; | |
9a619af0 | 2957 | |
348e048f DE |
2958 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
2959 | return type_sig->signature; | |
2960 | } | |
2961 | ||
2962 | static int | |
2963 | eq_type_signature (const void *item_lhs, const void *item_rhs) | |
2964 | { | |
2965 | const struct signatured_type *lhs = item_lhs; | |
2966 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 2967 | |
348e048f DE |
2968 | return lhs->signature == rhs->signature; |
2969 | } | |
2970 | ||
1fd400ff TT |
2971 | /* Allocate a hash table for signatured types. */ |
2972 | ||
2973 | static htab_t | |
673bfd45 | 2974 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
2975 | { |
2976 | return htab_create_alloc_ex (41, | |
2977 | hash_type_signature, | |
2978 | eq_type_signature, | |
2979 | NULL, | |
2980 | &objfile->objfile_obstack, | |
2981 | hashtab_obstack_allocate, | |
2982 | dummy_obstack_deallocate); | |
2983 | } | |
2984 | ||
2985 | /* A helper function to add a signatured type CU to a list. */ | |
2986 | ||
2987 | static int | |
2988 | add_signatured_type_cu_to_list (void **slot, void *datum) | |
2989 | { | |
2990 | struct signatured_type *sigt = *slot; | |
2991 | struct dwarf2_per_cu_data ***datap = datum; | |
2992 | ||
2993 | **datap = &sigt->per_cu; | |
2994 | ++*datap; | |
2995 | ||
2996 | return 1; | |
2997 | } | |
2998 | ||
348e048f DE |
2999 | /* Create the hash table of all entries in the .debug_types section. |
3000 | The result is zero if there is an error (e.g. missing .debug_types section), | |
3001 | otherwise non-zero. */ | |
3002 | ||
3003 | static int | |
3004 | create_debug_types_hash_table (struct objfile *objfile) | |
3005 | { | |
be391dca | 3006 | gdb_byte *info_ptr; |
348e048f | 3007 | htab_t types_htab; |
1fd400ff | 3008 | struct dwarf2_per_cu_data **iter; |
348e048f | 3009 | |
be391dca TT |
3010 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
3011 | info_ptr = dwarf2_per_objfile->types.buffer; | |
3012 | ||
348e048f DE |
3013 | if (info_ptr == NULL) |
3014 | { | |
3015 | dwarf2_per_objfile->signatured_types = NULL; | |
3016 | return 0; | |
3017 | } | |
3018 | ||
673bfd45 | 3019 | types_htab = allocate_signatured_type_table (objfile); |
348e048f DE |
3020 | |
3021 | if (dwarf2_die_debug) | |
3022 | fprintf_unfiltered (gdb_stdlog, "Signatured types:\n"); | |
3023 | ||
3e43a32a MS |
3024 | while (info_ptr < dwarf2_per_objfile->types.buffer |
3025 | + dwarf2_per_objfile->types.size) | |
348e048f DE |
3026 | { |
3027 | unsigned int offset; | |
3028 | unsigned int offset_size; | |
3029 | unsigned int type_offset; | |
3030 | unsigned int length, initial_length_size; | |
3031 | unsigned short version; | |
3032 | ULONGEST signature; | |
3033 | struct signatured_type *type_sig; | |
3034 | void **slot; | |
3035 | gdb_byte *ptr = info_ptr; | |
3036 | ||
3037 | offset = ptr - dwarf2_per_objfile->types.buffer; | |
3038 | ||
3039 | /* We need to read the type's signature in order to build the hash | |
3040 | table, but we don't need to read anything else just yet. */ | |
3041 | ||
3042 | /* Sanity check to ensure entire cu is present. */ | |
3043 | length = read_initial_length (objfile->obfd, ptr, &initial_length_size); | |
3044 | if (ptr + length + initial_length_size | |
3045 | > dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
3046 | { | |
3047 | complaint (&symfile_complaints, | |
3e43a32a MS |
3048 | _("debug type entry runs off end " |
3049 | "of `.debug_types' section, ignored")); | |
348e048f DE |
3050 | break; |
3051 | } | |
3052 | ||
3053 | offset_size = initial_length_size == 4 ? 4 : 8; | |
3054 | ptr += initial_length_size; | |
3055 | version = bfd_get_16 (objfile->obfd, ptr); | |
3056 | ptr += 2; | |
3057 | ptr += offset_size; /* abbrev offset */ | |
3058 | ptr += 1; /* address size */ | |
3059 | signature = bfd_get_64 (objfile->obfd, ptr); | |
3060 | ptr += 8; | |
3061 | type_offset = read_offset_1 (objfile->obfd, ptr, offset_size); | |
3062 | ||
3063 | type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig)); | |
3064 | memset (type_sig, 0, sizeof (*type_sig)); | |
3065 | type_sig->signature = signature; | |
3066 | type_sig->offset = offset; | |
3067 | type_sig->type_offset = type_offset; | |
ca1f3406 | 3068 | type_sig->per_cu.objfile = objfile; |
1fd400ff | 3069 | type_sig->per_cu.from_debug_types = 1; |
348e048f DE |
3070 | |
3071 | slot = htab_find_slot (types_htab, type_sig, INSERT); | |
3072 | gdb_assert (slot != NULL); | |
3073 | *slot = type_sig; | |
3074 | ||
3075 | if (dwarf2_die_debug) | |
3076 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
3077 | offset, phex (signature, sizeof (signature))); | |
3078 | ||
3079 | info_ptr = info_ptr + initial_length_size + length; | |
3080 | } | |
3081 | ||
3082 | dwarf2_per_objfile->signatured_types = types_htab; | |
3083 | ||
1fd400ff TT |
3084 | dwarf2_per_objfile->n_type_comp_units = htab_elements (types_htab); |
3085 | dwarf2_per_objfile->type_comp_units | |
3086 | = obstack_alloc (&objfile->objfile_obstack, | |
3087 | dwarf2_per_objfile->n_type_comp_units | |
3088 | * sizeof (struct dwarf2_per_cu_data *)); | |
3089 | iter = &dwarf2_per_objfile->type_comp_units[0]; | |
3090 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_list, &iter); | |
3091 | gdb_assert (iter - &dwarf2_per_objfile->type_comp_units[0] | |
3092 | == dwarf2_per_objfile->n_type_comp_units); | |
3093 | ||
348e048f DE |
3094 | return 1; |
3095 | } | |
3096 | ||
3097 | /* Lookup a signature based type. | |
3098 | Returns NULL if SIG is not present in the table. */ | |
3099 | ||
3100 | static struct signatured_type * | |
3101 | lookup_signatured_type (struct objfile *objfile, ULONGEST sig) | |
3102 | { | |
3103 | struct signatured_type find_entry, *entry; | |
3104 | ||
3105 | if (dwarf2_per_objfile->signatured_types == NULL) | |
3106 | { | |
3107 | complaint (&symfile_complaints, | |
55f1336d | 3108 | _("missing `.debug_types' section for DW_FORM_ref_sig8 die")); |
348e048f DE |
3109 | return 0; |
3110 | } | |
3111 | ||
3112 | find_entry.signature = sig; | |
3113 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
3114 | return entry; | |
3115 | } | |
3116 | ||
d85a05f0 DJ |
3117 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
3118 | ||
3119 | static void | |
3120 | init_cu_die_reader (struct die_reader_specs *reader, | |
3121 | struct dwarf2_cu *cu) | |
3122 | { | |
3123 | reader->abfd = cu->objfile->obfd; | |
3124 | reader->cu = cu; | |
3125 | if (cu->per_cu->from_debug_types) | |
be391dca TT |
3126 | { |
3127 | gdb_assert (dwarf2_per_objfile->types.readin); | |
3128 | reader->buffer = dwarf2_per_objfile->types.buffer; | |
3129 | } | |
d85a05f0 | 3130 | else |
be391dca TT |
3131 | { |
3132 | gdb_assert (dwarf2_per_objfile->info.readin); | |
3133 | reader->buffer = dwarf2_per_objfile->info.buffer; | |
3134 | } | |
d85a05f0 DJ |
3135 | } |
3136 | ||
3137 | /* Find the base address of the compilation unit for range lists and | |
3138 | location lists. It will normally be specified by DW_AT_low_pc. | |
3139 | In DWARF-3 draft 4, the base address could be overridden by | |
3140 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
3141 | compilation units with discontinuous ranges. */ | |
3142 | ||
3143 | static void | |
3144 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
3145 | { | |
3146 | struct attribute *attr; | |
3147 | ||
3148 | cu->base_known = 0; | |
3149 | cu->base_address = 0; | |
3150 | ||
3151 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
3152 | if (attr) | |
3153 | { | |
3154 | cu->base_address = DW_ADDR (attr); | |
3155 | cu->base_known = 1; | |
3156 | } | |
3157 | else | |
3158 | { | |
3159 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3160 | if (attr) | |
3161 | { | |
3162 | cu->base_address = DW_ADDR (attr); | |
3163 | cu->base_known = 1; | |
3164 | } | |
3165 | } | |
3166 | } | |
3167 | ||
348e048f DE |
3168 | /* Subroutine of process_type_comp_unit and dwarf2_build_psymtabs_hard |
3169 | to combine the common parts. | |
93311388 | 3170 | Process a compilation unit for a psymtab. |
348e048f DE |
3171 | BUFFER is a pointer to the beginning of the dwarf section buffer, |
3172 | either .debug_info or debug_types. | |
93311388 DE |
3173 | INFO_PTR is a pointer to the start of the CU. |
3174 | Returns a pointer to the next CU. */ | |
aaa75496 | 3175 | |
93311388 DE |
3176 | static gdb_byte * |
3177 | process_psymtab_comp_unit (struct objfile *objfile, | |
3178 | struct dwarf2_per_cu_data *this_cu, | |
3179 | gdb_byte *buffer, gdb_byte *info_ptr, | |
3180 | unsigned int buffer_size) | |
c906108c | 3181 | { |
c906108c | 3182 | bfd *abfd = objfile->obfd; |
93311388 | 3183 | gdb_byte *beg_of_comp_unit = info_ptr; |
d85a05f0 | 3184 | struct die_info *comp_unit_die; |
c906108c | 3185 | struct partial_symtab *pst; |
5734ee8b | 3186 | CORE_ADDR baseaddr; |
93311388 DE |
3187 | struct cleanup *back_to_inner; |
3188 | struct dwarf2_cu cu; | |
d85a05f0 DJ |
3189 | int has_children, has_pc_info; |
3190 | struct attribute *attr; | |
d85a05f0 DJ |
3191 | CORE_ADDR best_lowpc = 0, best_highpc = 0; |
3192 | struct die_reader_specs reader_specs; | |
3e2a0cee | 3193 | const char *filename; |
c906108c | 3194 | |
9816fde3 | 3195 | init_one_comp_unit (&cu, objfile); |
93311388 | 3196 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); |
ae038cb0 | 3197 | |
93311388 DE |
3198 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, |
3199 | buffer, buffer_size, | |
3200 | abfd); | |
10b3939b | 3201 | |
93311388 DE |
3202 | /* Complete the cu_header. */ |
3203 | cu.header.offset = beg_of_comp_unit - buffer; | |
3204 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
ff013f42 | 3205 | |
93311388 | 3206 | cu.list_in_scope = &file_symbols; |
af703f96 | 3207 | |
328c9494 DJ |
3208 | /* If this compilation unit was already read in, free the |
3209 | cached copy in order to read it in again. This is | |
3210 | necessary because we skipped some symbols when we first | |
3211 | read in the compilation unit (see load_partial_dies). | |
3212 | This problem could be avoided, but the benefit is | |
3213 | unclear. */ | |
3214 | if (this_cu->cu != NULL) | |
3215 | free_one_cached_comp_unit (this_cu->cu); | |
3216 | ||
3217 | /* Note that this is a pointer to our stack frame, being | |
3218 | added to a global data structure. It will be cleaned up | |
3219 | in free_stack_comp_unit when we finish with this | |
3220 | compilation unit. */ | |
3221 | this_cu->cu = &cu; | |
d85a05f0 DJ |
3222 | cu.per_cu = this_cu; |
3223 | ||
93311388 DE |
3224 | /* Read the abbrevs for this compilation unit into a table. */ |
3225 | dwarf2_read_abbrevs (abfd, &cu); | |
3226 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
af703f96 | 3227 | |
93311388 | 3228 | /* Read the compilation unit die. */ |
348e048f DE |
3229 | if (this_cu->from_debug_types) |
3230 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
d85a05f0 DJ |
3231 | init_cu_die_reader (&reader_specs, &cu); |
3232 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3233 | &has_children); | |
93311388 | 3234 | |
348e048f DE |
3235 | if (this_cu->from_debug_types) |
3236 | { | |
3237 | /* offset,length haven't been set yet for type units. */ | |
3238 | this_cu->offset = cu.header.offset; | |
3239 | this_cu->length = cu.header.length + cu.header.initial_length_size; | |
3240 | } | |
d85a05f0 | 3241 | else if (comp_unit_die->tag == DW_TAG_partial_unit) |
c906108c | 3242 | { |
93311388 DE |
3243 | info_ptr = (beg_of_comp_unit + cu.header.length |
3244 | + cu.header.initial_length_size); | |
3245 | do_cleanups (back_to_inner); | |
3246 | return info_ptr; | |
3247 | } | |
72bf9492 | 3248 | |
9816fde3 | 3249 | prepare_one_comp_unit (&cu, comp_unit_die); |
c906108c | 3250 | |
93311388 | 3251 | /* Allocate a new partial symbol table structure. */ |
d85a05f0 | 3252 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, &cu); |
3e2a0cee TT |
3253 | if (attr == NULL || !DW_STRING (attr)) |
3254 | filename = ""; | |
3255 | else | |
3256 | filename = DW_STRING (attr); | |
93311388 | 3257 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
3e2a0cee | 3258 | filename, |
93311388 DE |
3259 | /* TEXTLOW and TEXTHIGH are set below. */ |
3260 | 0, | |
3261 | objfile->global_psymbols.next, | |
3262 | objfile->static_psymbols.next); | |
72bf9492 | 3263 | |
d85a05f0 DJ |
3264 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, &cu); |
3265 | if (attr != NULL) | |
3266 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 3267 | |
e38df1d0 | 3268 | pst->read_symtab_private = this_cu; |
72bf9492 | 3269 | |
93311388 | 3270 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 3271 | |
0963b4bd | 3272 | /* Store the function that reads in the rest of the symbol table. */ |
93311388 | 3273 | pst->read_symtab = dwarf2_psymtab_to_symtab; |
57349743 | 3274 | |
9291a0cd | 3275 | this_cu->v.psymtab = pst; |
c906108c | 3276 | |
d85a05f0 DJ |
3277 | dwarf2_find_base_address (comp_unit_die, &cu); |
3278 | ||
93311388 DE |
3279 | /* Possibly set the default values of LOWPC and HIGHPC from |
3280 | `DW_AT_ranges'. */ | |
d85a05f0 DJ |
3281 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
3282 | &best_highpc, &cu, pst); | |
3283 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
93311388 DE |
3284 | /* Store the contiguous range if it is not empty; it can be empty for |
3285 | CUs with no code. */ | |
3286 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
3287 | best_lowpc + baseaddr, |
3288 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
3289 | |
3290 | /* Check if comp unit has_children. | |
3291 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 3292 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 3293 | if (has_children) |
93311388 DE |
3294 | { |
3295 | struct partial_die_info *first_die; | |
3296 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 3297 | |
93311388 DE |
3298 | lowpc = ((CORE_ADDR) -1); |
3299 | highpc = ((CORE_ADDR) 0); | |
c906108c | 3300 | |
93311388 | 3301 | first_die = load_partial_dies (abfd, buffer, info_ptr, 1, &cu); |
c906108c | 3302 | |
93311388 | 3303 | scan_partial_symbols (first_die, &lowpc, &highpc, |
d85a05f0 | 3304 | ! has_pc_info, &cu); |
57c22c6c | 3305 | |
93311388 DE |
3306 | /* If we didn't find a lowpc, set it to highpc to avoid |
3307 | complaints from `maint check'. */ | |
3308 | if (lowpc == ((CORE_ADDR) -1)) | |
3309 | lowpc = highpc; | |
10b3939b | 3310 | |
93311388 DE |
3311 | /* If the compilation unit didn't have an explicit address range, |
3312 | then use the information extracted from its child dies. */ | |
d85a05f0 | 3313 | if (! has_pc_info) |
93311388 | 3314 | { |
d85a05f0 DJ |
3315 | best_lowpc = lowpc; |
3316 | best_highpc = highpc; | |
93311388 DE |
3317 | } |
3318 | } | |
d85a05f0 DJ |
3319 | pst->textlow = best_lowpc + baseaddr; |
3320 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 3321 | |
93311388 DE |
3322 | pst->n_global_syms = objfile->global_psymbols.next - |
3323 | (objfile->global_psymbols.list + pst->globals_offset); | |
3324 | pst->n_static_syms = objfile->static_psymbols.next - | |
3325 | (objfile->static_psymbols.list + pst->statics_offset); | |
3326 | sort_pst_symbols (pst); | |
c906108c | 3327 | |
93311388 DE |
3328 | info_ptr = (beg_of_comp_unit + cu.header.length |
3329 | + cu.header.initial_length_size); | |
ae038cb0 | 3330 | |
348e048f DE |
3331 | if (this_cu->from_debug_types) |
3332 | { | |
3333 | /* It's not clear we want to do anything with stmt lists here. | |
3334 | Waiting to see what gcc ultimately does. */ | |
3335 | } | |
d85a05f0 | 3336 | else |
93311388 DE |
3337 | { |
3338 | /* Get the list of files included in the current compilation unit, | |
3339 | and build a psymtab for each of them. */ | |
d85a05f0 | 3340 | dwarf2_build_include_psymtabs (&cu, comp_unit_die, pst); |
93311388 | 3341 | } |
ae038cb0 | 3342 | |
93311388 | 3343 | do_cleanups (back_to_inner); |
ae038cb0 | 3344 | |
93311388 DE |
3345 | return info_ptr; |
3346 | } | |
ff013f42 | 3347 | |
348e048f DE |
3348 | /* Traversal function for htab_traverse_noresize. |
3349 | Process one .debug_types comp-unit. */ | |
3350 | ||
3351 | static int | |
3352 | process_type_comp_unit (void **slot, void *info) | |
3353 | { | |
3354 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
3355 | struct objfile *objfile = (struct objfile *) info; | |
3356 | struct dwarf2_per_cu_data *this_cu; | |
3357 | ||
3358 | this_cu = &entry->per_cu; | |
348e048f | 3359 | |
be391dca | 3360 | gdb_assert (dwarf2_per_objfile->types.readin); |
348e048f DE |
3361 | process_psymtab_comp_unit (objfile, this_cu, |
3362 | dwarf2_per_objfile->types.buffer, | |
3363 | dwarf2_per_objfile->types.buffer + entry->offset, | |
3364 | dwarf2_per_objfile->types.size); | |
3365 | ||
3366 | return 1; | |
3367 | } | |
3368 | ||
3369 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
3370 | Build partial symbol tables for the .debug_types comp-units. */ | |
3371 | ||
3372 | static void | |
3373 | build_type_psymtabs (struct objfile *objfile) | |
3374 | { | |
3375 | if (! create_debug_types_hash_table (objfile)) | |
3376 | return; | |
3377 | ||
3378 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
3379 | process_type_comp_unit, objfile); | |
3380 | } | |
3381 | ||
60606b2c TT |
3382 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
3383 | ||
3384 | static void | |
3385 | psymtabs_addrmap_cleanup (void *o) | |
3386 | { | |
3387 | struct objfile *objfile = o; | |
ec61707d | 3388 | |
60606b2c TT |
3389 | objfile->psymtabs_addrmap = NULL; |
3390 | } | |
3391 | ||
93311388 DE |
3392 | /* Build the partial symbol table by doing a quick pass through the |
3393 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 3394 | |
93311388 | 3395 | static void |
c67a9c90 | 3396 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 3397 | { |
93311388 | 3398 | gdb_byte *info_ptr; |
60606b2c TT |
3399 | struct cleanup *back_to, *addrmap_cleanup; |
3400 | struct obstack temp_obstack; | |
93311388 | 3401 | |
98bfdba5 PA |
3402 | dwarf2_per_objfile->reading_partial_symbols = 1; |
3403 | ||
be391dca | 3404 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
93311388 | 3405 | info_ptr = dwarf2_per_objfile->info.buffer; |
91c24f0a | 3406 | |
93311388 DE |
3407 | /* Any cached compilation units will be linked by the per-objfile |
3408 | read_in_chain. Make sure to free them when we're done. */ | |
3409 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 3410 | |
348e048f DE |
3411 | build_type_psymtabs (objfile); |
3412 | ||
93311388 | 3413 | create_all_comp_units (objfile); |
c906108c | 3414 | |
60606b2c TT |
3415 | /* Create a temporary address map on a temporary obstack. We later |
3416 | copy this to the final obstack. */ | |
3417 | obstack_init (&temp_obstack); | |
3418 | make_cleanup_obstack_free (&temp_obstack); | |
3419 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
3420 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 3421 | |
93311388 DE |
3422 | /* Since the objects we're extracting from .debug_info vary in |
3423 | length, only the individual functions to extract them (like | |
3424 | read_comp_unit_head and load_partial_die) can really know whether | |
3425 | the buffer is large enough to hold another complete object. | |
c906108c | 3426 | |
93311388 DE |
3427 | At the moment, they don't actually check that. If .debug_info |
3428 | holds just one extra byte after the last compilation unit's dies, | |
3429 | then read_comp_unit_head will happily read off the end of the | |
3430 | buffer. read_partial_die is similarly casual. Those functions | |
3431 | should be fixed. | |
c906108c | 3432 | |
93311388 DE |
3433 | For this loop condition, simply checking whether there's any data |
3434 | left at all should be sufficient. */ | |
c906108c | 3435 | |
93311388 DE |
3436 | while (info_ptr < (dwarf2_per_objfile->info.buffer |
3437 | + dwarf2_per_objfile->info.size)) | |
3438 | { | |
3439 | struct dwarf2_per_cu_data *this_cu; | |
dd373385 | 3440 | |
3e43a32a MS |
3441 | this_cu = dwarf2_find_comp_unit (info_ptr |
3442 | - dwarf2_per_objfile->info.buffer, | |
93311388 | 3443 | objfile); |
aaa75496 | 3444 | |
93311388 DE |
3445 | info_ptr = process_psymtab_comp_unit (objfile, this_cu, |
3446 | dwarf2_per_objfile->info.buffer, | |
3447 | info_ptr, | |
3448 | dwarf2_per_objfile->info.size); | |
c906108c | 3449 | } |
ff013f42 JK |
3450 | |
3451 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
3452 | &objfile->objfile_obstack); | |
60606b2c | 3453 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 3454 | |
ae038cb0 DJ |
3455 | do_cleanups (back_to); |
3456 | } | |
3457 | ||
93311388 | 3458 | /* Load the partial DIEs for a secondary CU into memory. */ |
ae038cb0 DJ |
3459 | |
3460 | static void | |
93311388 DE |
3461 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu, |
3462 | struct objfile *objfile) | |
ae038cb0 DJ |
3463 | { |
3464 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 3465 | gdb_byte *info_ptr, *beg_of_comp_unit; |
d85a05f0 | 3466 | struct die_info *comp_unit_die; |
ae038cb0 | 3467 | struct dwarf2_cu *cu; |
1d9ec526 | 3468 | struct cleanup *free_abbrevs_cleanup, *free_cu_cleanup = NULL; |
d85a05f0 DJ |
3469 | int has_children; |
3470 | struct die_reader_specs reader_specs; | |
98bfdba5 | 3471 | int read_cu = 0; |
ae038cb0 | 3472 | |
348e048f DE |
3473 | gdb_assert (! this_cu->from_debug_types); |
3474 | ||
be391dca | 3475 | gdb_assert (dwarf2_per_objfile->info.readin); |
dce234bc | 3476 | info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset; |
ae038cb0 DJ |
3477 | beg_of_comp_unit = info_ptr; |
3478 | ||
98bfdba5 PA |
3479 | if (this_cu->cu == NULL) |
3480 | { | |
9816fde3 JK |
3481 | cu = xmalloc (sizeof (*cu)); |
3482 | init_one_comp_unit (cu, objfile); | |
ae038cb0 | 3483 | |
98bfdba5 | 3484 | read_cu = 1; |
ae038cb0 | 3485 | |
98bfdba5 PA |
3486 | /* If an error occurs while loading, release our storage. */ |
3487 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
328c9494 | 3488 | |
98bfdba5 PA |
3489 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, |
3490 | dwarf2_per_objfile->info.buffer, | |
3491 | dwarf2_per_objfile->info.size, | |
3492 | abfd); | |
ae038cb0 | 3493 | |
98bfdba5 PA |
3494 | /* Complete the cu_header. */ |
3495 | cu->header.offset = this_cu->offset; | |
3496 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
3497 | ||
3498 | /* Link this compilation unit into the compilation unit tree. */ | |
3499 | this_cu->cu = cu; | |
3500 | cu->per_cu = this_cu; | |
98bfdba5 PA |
3501 | |
3502 | /* Link this CU into read_in_chain. */ | |
3503 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
3504 | dwarf2_per_objfile->read_in_chain = this_cu; | |
3505 | } | |
3506 | else | |
3507 | { | |
3508 | cu = this_cu->cu; | |
3509 | info_ptr += cu->header.first_die_offset; | |
3510 | } | |
ae038cb0 DJ |
3511 | |
3512 | /* Read the abbrevs for this compilation unit into a table. */ | |
98bfdba5 | 3513 | gdb_assert (cu->dwarf2_abbrevs == NULL); |
ae038cb0 | 3514 | dwarf2_read_abbrevs (abfd, cu); |
98bfdba5 | 3515 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); |
ae038cb0 DJ |
3516 | |
3517 | /* Read the compilation unit die. */ | |
d85a05f0 DJ |
3518 | init_cu_die_reader (&reader_specs, cu); |
3519 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3520 | &has_children); | |
ae038cb0 | 3521 | |
9816fde3 | 3522 | prepare_one_comp_unit (cu, comp_unit_die); |
ae038cb0 | 3523 | |
ae038cb0 DJ |
3524 | /* Check if comp unit has_children. |
3525 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 3526 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 3527 | if (has_children) |
93311388 | 3528 | load_partial_dies (abfd, dwarf2_per_objfile->info.buffer, info_ptr, 0, cu); |
ae038cb0 | 3529 | |
98bfdba5 PA |
3530 | do_cleanups (free_abbrevs_cleanup); |
3531 | ||
3532 | if (read_cu) | |
3533 | { | |
3534 | /* We've successfully allocated this compilation unit. Let our | |
3535 | caller clean it up when finished with it. */ | |
3536 | discard_cleanups (free_cu_cleanup); | |
3537 | } | |
ae038cb0 DJ |
3538 | } |
3539 | ||
3540 | /* Create a list of all compilation units in OBJFILE. We do this only | |
3541 | if an inter-comp-unit reference is found; presumably if there is one, | |
3542 | there will be many, and one will occur early in the .debug_info section. | |
3543 | So there's no point in building this list incrementally. */ | |
3544 | ||
3545 | static void | |
3546 | create_all_comp_units (struct objfile *objfile) | |
3547 | { | |
3548 | int n_allocated; | |
3549 | int n_comp_units; | |
3550 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
3551 | gdb_byte *info_ptr; |
3552 | ||
3553 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
3554 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
3555 | |
3556 | n_comp_units = 0; | |
3557 | n_allocated = 10; | |
3558 | all_comp_units = xmalloc (n_allocated | |
3559 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 3560 | |
3e43a32a MS |
3561 | while (info_ptr < dwarf2_per_objfile->info.buffer |
3562 | + dwarf2_per_objfile->info.size) | |
ae038cb0 | 3563 | { |
c764a876 | 3564 | unsigned int length, initial_length_size; |
ae038cb0 | 3565 | struct dwarf2_per_cu_data *this_cu; |
c764a876 | 3566 | unsigned int offset; |
ae038cb0 | 3567 | |
dce234bc | 3568 | offset = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
3569 | |
3570 | /* Read just enough information to find out where the next | |
3571 | compilation unit is. */ | |
c764a876 DE |
3572 | length = read_initial_length (objfile->obfd, info_ptr, |
3573 | &initial_length_size); | |
ae038cb0 DJ |
3574 | |
3575 | /* Save the compilation unit for later lookup. */ | |
3576 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
3577 | sizeof (struct dwarf2_per_cu_data)); | |
3578 | memset (this_cu, 0, sizeof (*this_cu)); | |
3579 | this_cu->offset = offset; | |
c764a876 | 3580 | this_cu->length = length + initial_length_size; |
9291a0cd | 3581 | this_cu->objfile = objfile; |
ae038cb0 DJ |
3582 | |
3583 | if (n_comp_units == n_allocated) | |
3584 | { | |
3585 | n_allocated *= 2; | |
3586 | all_comp_units = xrealloc (all_comp_units, | |
3587 | n_allocated | |
3588 | * sizeof (struct dwarf2_per_cu_data *)); | |
3589 | } | |
3590 | all_comp_units[n_comp_units++] = this_cu; | |
3591 | ||
3592 | info_ptr = info_ptr + this_cu->length; | |
3593 | } | |
3594 | ||
3595 | dwarf2_per_objfile->all_comp_units | |
3596 | = obstack_alloc (&objfile->objfile_obstack, | |
3597 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3598 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
3599 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3600 | xfree (all_comp_units); | |
3601 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
3602 | } |
3603 | ||
5734ee8b DJ |
3604 | /* Process all loaded DIEs for compilation unit CU, starting at |
3605 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
3606 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
3607 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
3608 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
3609 | and record the covered ranges in the addrmap. */ | |
c906108c | 3610 | |
72bf9492 DJ |
3611 | static void |
3612 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 3613 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 3614 | { |
72bf9492 | 3615 | struct partial_die_info *pdi; |
c906108c | 3616 | |
91c24f0a DC |
3617 | /* Now, march along the PDI's, descending into ones which have |
3618 | interesting children but skipping the children of the other ones, | |
3619 | until we reach the end of the compilation unit. */ | |
c906108c | 3620 | |
72bf9492 | 3621 | pdi = first_die; |
91c24f0a | 3622 | |
72bf9492 DJ |
3623 | while (pdi != NULL) |
3624 | { | |
3625 | fixup_partial_die (pdi, cu); | |
c906108c | 3626 | |
f55ee35c | 3627 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
3628 | children, so we need to look at them. Ditto for anonymous |
3629 | enums. */ | |
933c6fe4 | 3630 | |
72bf9492 | 3631 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
f55ee35c | 3632 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type) |
c906108c | 3633 | { |
72bf9492 | 3634 | switch (pdi->tag) |
c906108c SS |
3635 | { |
3636 | case DW_TAG_subprogram: | |
5734ee8b | 3637 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c | 3638 | break; |
72929c62 | 3639 | case DW_TAG_constant: |
c906108c SS |
3640 | case DW_TAG_variable: |
3641 | case DW_TAG_typedef: | |
91c24f0a | 3642 | case DW_TAG_union_type: |
72bf9492 | 3643 | if (!pdi->is_declaration) |
63d06c5c | 3644 | { |
72bf9492 | 3645 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
3646 | } |
3647 | break; | |
c906108c | 3648 | case DW_TAG_class_type: |
680b30c7 | 3649 | case DW_TAG_interface_type: |
c906108c | 3650 | case DW_TAG_structure_type: |
72bf9492 | 3651 | if (!pdi->is_declaration) |
c906108c | 3652 | { |
72bf9492 | 3653 | add_partial_symbol (pdi, cu); |
c906108c SS |
3654 | } |
3655 | break; | |
91c24f0a | 3656 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
3657 | if (!pdi->is_declaration) |
3658 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
3659 | break; |
3660 | case DW_TAG_base_type: | |
a02abb62 | 3661 | case DW_TAG_subrange_type: |
c906108c | 3662 | /* File scope base type definitions are added to the partial |
c5aa993b | 3663 | symbol table. */ |
72bf9492 | 3664 | add_partial_symbol (pdi, cu); |
c906108c | 3665 | break; |
d9fa45fe | 3666 | case DW_TAG_namespace: |
5734ee8b | 3667 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 3668 | break; |
5d7cb8df JK |
3669 | case DW_TAG_module: |
3670 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
3671 | break; | |
c906108c SS |
3672 | default: |
3673 | break; | |
3674 | } | |
3675 | } | |
3676 | ||
72bf9492 DJ |
3677 | /* If the die has a sibling, skip to the sibling. */ |
3678 | ||
3679 | pdi = pdi->die_sibling; | |
3680 | } | |
3681 | } | |
3682 | ||
3683 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 3684 | |
72bf9492 | 3685 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
3686 | name is concatenated with "::" and the partial DIE's name. For |
3687 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
3688 | Enumerators are an exception; they use the scope of their parent |
3689 | enumeration type, i.e. the name of the enumeration type is not | |
3690 | prepended to the enumerator. | |
91c24f0a | 3691 | |
72bf9492 DJ |
3692 | There are two complexities. One is DW_AT_specification; in this |
3693 | case "parent" means the parent of the target of the specification, | |
3694 | instead of the direct parent of the DIE. The other is compilers | |
3695 | which do not emit DW_TAG_namespace; in this case we try to guess | |
3696 | the fully qualified name of structure types from their members' | |
3697 | linkage names. This must be done using the DIE's children rather | |
3698 | than the children of any DW_AT_specification target. We only need | |
3699 | to do this for structures at the top level, i.e. if the target of | |
3700 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
3701 | have a parent. */ | |
3702 | ||
3703 | /* Compute the scope prefix associated with PDI's parent, in | |
3704 | compilation unit CU. The result will be allocated on CU's | |
3705 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
3706 | field. NULL is returned if no prefix is necessary. */ | |
3707 | static char * | |
3708 | partial_die_parent_scope (struct partial_die_info *pdi, | |
3709 | struct dwarf2_cu *cu) | |
3710 | { | |
3711 | char *grandparent_scope; | |
3712 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 3713 | |
72bf9492 DJ |
3714 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
3715 | then this means the parent of the specification DIE. */ | |
3716 | ||
3717 | real_pdi = pdi; | |
72bf9492 | 3718 | while (real_pdi->has_specification) |
10b3939b | 3719 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
3720 | |
3721 | parent = real_pdi->die_parent; | |
3722 | if (parent == NULL) | |
3723 | return NULL; | |
3724 | ||
3725 | if (parent->scope_set) | |
3726 | return parent->scope; | |
3727 | ||
3728 | fixup_partial_die (parent, cu); | |
3729 | ||
10b3939b | 3730 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 3731 | |
acebe513 UW |
3732 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
3733 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
3734 | Work around this problem here. */ | |
3735 | if (cu->language == language_cplus | |
6e70227d | 3736 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
3737 | && strcmp (parent->name, "::") == 0 |
3738 | && grandparent_scope == NULL) | |
3739 | { | |
3740 | parent->scope = NULL; | |
3741 | parent->scope_set = 1; | |
3742 | return NULL; | |
3743 | } | |
3744 | ||
72bf9492 | 3745 | if (parent->tag == DW_TAG_namespace |
f55ee35c | 3746 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
3747 | || parent->tag == DW_TAG_structure_type |
3748 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 3749 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
3750 | || parent->tag == DW_TAG_union_type |
3751 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
3752 | { |
3753 | if (grandparent_scope == NULL) | |
3754 | parent->scope = parent->name; | |
3755 | else | |
3e43a32a MS |
3756 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
3757 | grandparent_scope, | |
f55ee35c | 3758 | parent->name, 0, cu); |
72bf9492 | 3759 | } |
ceeb3d5a | 3760 | else if (parent->tag == DW_TAG_enumerator) |
72bf9492 DJ |
3761 | /* Enumerators should not get the name of the enumeration as a prefix. */ |
3762 | parent->scope = grandparent_scope; | |
3763 | else | |
3764 | { | |
3765 | /* FIXME drow/2004-04-01: What should we be doing with | |
3766 | function-local names? For partial symbols, we should probably be | |
3767 | ignoring them. */ | |
3768 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3769 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
3770 | parent->tag, pdi->offset); |
3771 | parent->scope = grandparent_scope; | |
c906108c SS |
3772 | } |
3773 | ||
72bf9492 DJ |
3774 | parent->scope_set = 1; |
3775 | return parent->scope; | |
3776 | } | |
3777 | ||
3778 | /* Return the fully scoped name associated with PDI, from compilation unit | |
3779 | CU. The result will be allocated with malloc. */ | |
3780 | static char * | |
3781 | partial_die_full_name (struct partial_die_info *pdi, | |
3782 | struct dwarf2_cu *cu) | |
3783 | { | |
3784 | char *parent_scope; | |
3785 | ||
98bfdba5 PA |
3786 | /* If this is a template instantiation, we can not work out the |
3787 | template arguments from partial DIEs. So, unfortunately, we have | |
3788 | to go through the full DIEs. At least any work we do building | |
3789 | types here will be reused if full symbols are loaded later. */ | |
3790 | if (pdi->has_template_arguments) | |
3791 | { | |
3792 | fixup_partial_die (pdi, cu); | |
3793 | ||
3794 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
3795 | { | |
3796 | struct die_info *die; | |
3797 | struct attribute attr; | |
3798 | struct dwarf2_cu *ref_cu = cu; | |
3799 | ||
3800 | attr.name = 0; | |
3801 | attr.form = DW_FORM_ref_addr; | |
3802 | attr.u.addr = pdi->offset; | |
3803 | die = follow_die_ref (NULL, &attr, &ref_cu); | |
3804 | ||
3805 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
3806 | } | |
3807 | } | |
3808 | ||
72bf9492 DJ |
3809 | parent_scope = partial_die_parent_scope (pdi, cu); |
3810 | if (parent_scope == NULL) | |
3811 | return NULL; | |
3812 | else | |
f55ee35c | 3813 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
3814 | } |
3815 | ||
3816 | static void | |
72bf9492 | 3817 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 3818 | { |
e7c27a73 | 3819 | struct objfile *objfile = cu->objfile; |
c906108c | 3820 | CORE_ADDR addr = 0; |
decbce07 | 3821 | char *actual_name = NULL; |
5c4e30ca | 3822 | const struct partial_symbol *psym = NULL; |
e142c38c | 3823 | CORE_ADDR baseaddr; |
72bf9492 | 3824 | int built_actual_name = 0; |
e142c38c DJ |
3825 | |
3826 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 3827 | |
94af9270 KS |
3828 | actual_name = partial_die_full_name (pdi, cu); |
3829 | if (actual_name) | |
3830 | built_actual_name = 1; | |
63d06c5c | 3831 | |
72bf9492 DJ |
3832 | if (actual_name == NULL) |
3833 | actual_name = pdi->name; | |
3834 | ||
c906108c SS |
3835 | switch (pdi->tag) |
3836 | { | |
3837 | case DW_TAG_subprogram: | |
2cfa0c8d | 3838 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 3839 | { |
2cfa0c8d JB |
3840 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
3841 | of the global scope. But in Ada, we want to be able to access | |
3842 | nested procedures globally. So all Ada subprograms are stored | |
3843 | in the global scope. */ | |
f47fb265 | 3844 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3845 | mst_text, objfile); */ |
f47fb265 MS |
3846 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3847 | built_actual_name, | |
3848 | VAR_DOMAIN, LOC_BLOCK, | |
3849 | &objfile->global_psymbols, | |
3850 | 0, pdi->lowpc + baseaddr, | |
3851 | cu->language, objfile); | |
c906108c SS |
3852 | } |
3853 | else | |
3854 | { | |
f47fb265 | 3855 | /* prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3856 | mst_file_text, objfile); */ |
f47fb265 MS |
3857 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3858 | built_actual_name, | |
3859 | VAR_DOMAIN, LOC_BLOCK, | |
3860 | &objfile->static_psymbols, | |
3861 | 0, pdi->lowpc + baseaddr, | |
3862 | cu->language, objfile); | |
c906108c SS |
3863 | } |
3864 | break; | |
72929c62 JB |
3865 | case DW_TAG_constant: |
3866 | { | |
3867 | struct psymbol_allocation_list *list; | |
3868 | ||
3869 | if (pdi->is_external) | |
3870 | list = &objfile->global_psymbols; | |
3871 | else | |
3872 | list = &objfile->static_psymbols; | |
f47fb265 MS |
3873 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3874 | built_actual_name, VAR_DOMAIN, LOC_STATIC, | |
3875 | list, 0, 0, cu->language, objfile); | |
72929c62 JB |
3876 | } |
3877 | break; | |
c906108c | 3878 | case DW_TAG_variable: |
caac4577 JG |
3879 | if (pdi->locdesc) |
3880 | addr = decode_locdesc (pdi->locdesc, cu); | |
3881 | ||
3882 | if (pdi->locdesc | |
3883 | && addr == 0 | |
3884 | && !dwarf2_per_objfile->has_section_at_zero) | |
3885 | { | |
3886 | /* A global or static variable may also have been stripped | |
3887 | out by the linker if unused, in which case its address | |
3888 | will be nullified; do not add such variables into partial | |
3889 | symbol table then. */ | |
3890 | } | |
3891 | else if (pdi->is_external) | |
c906108c SS |
3892 | { |
3893 | /* Global Variable. | |
3894 | Don't enter into the minimal symbol tables as there is | |
3895 | a minimal symbol table entry from the ELF symbols already. | |
3896 | Enter into partial symbol table if it has a location | |
3897 | descriptor or a type. | |
3898 | If the location descriptor is missing, new_symbol will create | |
3899 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
3900 | be determined from the minimal symbol table whenever the variable | |
3901 | is referenced. | |
3902 | The address for the partial symbol table entry is not | |
3903 | used by GDB, but it comes in handy for debugging partial symbol | |
3904 | table building. */ | |
3905 | ||
c906108c | 3906 | if (pdi->locdesc || pdi->has_type) |
f47fb265 MS |
3907 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3908 | built_actual_name, | |
3909 | VAR_DOMAIN, LOC_STATIC, | |
3910 | &objfile->global_psymbols, | |
3911 | 0, addr + baseaddr, | |
3912 | cu->language, objfile); | |
c906108c SS |
3913 | } |
3914 | else | |
3915 | { | |
0963b4bd | 3916 | /* Static Variable. Skip symbols without location descriptors. */ |
c906108c | 3917 | if (pdi->locdesc == NULL) |
decbce07 MS |
3918 | { |
3919 | if (built_actual_name) | |
3920 | xfree (actual_name); | |
3921 | return; | |
3922 | } | |
f47fb265 | 3923 | /* prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 3924 | mst_file_data, objfile); */ |
f47fb265 MS |
3925 | add_psymbol_to_list (actual_name, strlen (actual_name), |
3926 | built_actual_name, | |
3927 | VAR_DOMAIN, LOC_STATIC, | |
3928 | &objfile->static_psymbols, | |
3929 | 0, addr + baseaddr, | |
3930 | cu->language, objfile); | |
c906108c SS |
3931 | } |
3932 | break; | |
3933 | case DW_TAG_typedef: | |
3934 | case DW_TAG_base_type: | |
a02abb62 | 3935 | case DW_TAG_subrange_type: |
38d518c9 | 3936 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3937 | built_actual_name, |
176620f1 | 3938 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 3939 | &objfile->static_psymbols, |
e142c38c | 3940 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3941 | break; |
72bf9492 DJ |
3942 | case DW_TAG_namespace: |
3943 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 3944 | built_actual_name, |
72bf9492 DJ |
3945 | VAR_DOMAIN, LOC_TYPEDEF, |
3946 | &objfile->global_psymbols, | |
3947 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
3948 | break; | |
c906108c | 3949 | case DW_TAG_class_type: |
680b30c7 | 3950 | case DW_TAG_interface_type: |
c906108c SS |
3951 | case DW_TAG_structure_type: |
3952 | case DW_TAG_union_type: | |
3953 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
3954 | /* Skip external references. The DWARF standard says in the section |
3955 | about "Structure, Union, and Class Type Entries": "An incomplete | |
3956 | structure, union or class type is represented by a structure, | |
3957 | union or class entry that does not have a byte size attribute | |
3958 | and that has a DW_AT_declaration attribute." */ | |
3959 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
3960 | { |
3961 | if (built_actual_name) | |
3962 | xfree (actual_name); | |
3963 | return; | |
3964 | } | |
fa4028e9 | 3965 | |
63d06c5c DC |
3966 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
3967 | static vs. global. */ | |
38d518c9 | 3968 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3969 | built_actual_name, |
176620f1 | 3970 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
3971 | (cu->language == language_cplus |
3972 | || cu->language == language_java) | |
63d06c5c DC |
3973 | ? &objfile->global_psymbols |
3974 | : &objfile->static_psymbols, | |
e142c38c | 3975 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3976 | |
c906108c SS |
3977 | break; |
3978 | case DW_TAG_enumerator: | |
38d518c9 | 3979 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3980 | built_actual_name, |
176620f1 | 3981 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
3982 | (cu->language == language_cplus |
3983 | || cu->language == language_java) | |
f6fe98ef DJ |
3984 | ? &objfile->global_psymbols |
3985 | : &objfile->static_psymbols, | |
e142c38c | 3986 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
3987 | break; |
3988 | default: | |
3989 | break; | |
3990 | } | |
5c4e30ca | 3991 | |
72bf9492 DJ |
3992 | if (built_actual_name) |
3993 | xfree (actual_name); | |
c906108c SS |
3994 | } |
3995 | ||
5c4e30ca DC |
3996 | /* Read a partial die corresponding to a namespace; also, add a symbol |
3997 | corresponding to that namespace to the symbol table. NAMESPACE is | |
3998 | the name of the enclosing namespace. */ | |
91c24f0a | 3999 | |
72bf9492 DJ |
4000 | static void |
4001 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 4002 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 4003 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 4004 | { |
72bf9492 | 4005 | /* Add a symbol for the namespace. */ |
e7c27a73 | 4006 | |
72bf9492 | 4007 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
4008 | |
4009 | /* Now scan partial symbols in that namespace. */ | |
4010 | ||
91c24f0a | 4011 | if (pdi->has_children) |
5734ee8b | 4012 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
4013 | } |
4014 | ||
5d7cb8df JK |
4015 | /* Read a partial die corresponding to a Fortran module. */ |
4016 | ||
4017 | static void | |
4018 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
4019 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
4020 | { | |
f55ee35c | 4021 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
4022 | |
4023 | if (pdi->has_children) | |
4024 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
4025 | } | |
4026 | ||
bc30ff58 JB |
4027 | /* Read a partial die corresponding to a subprogram and create a partial |
4028 | symbol for that subprogram. When the CU language allows it, this | |
4029 | routine also defines a partial symbol for each nested subprogram | |
4030 | that this subprogram contains. | |
6e70227d | 4031 | |
bc30ff58 JB |
4032 | DIE my also be a lexical block, in which case we simply search |
4033 | recursively for suprograms defined inside that lexical block. | |
4034 | Again, this is only performed when the CU language allows this | |
4035 | type of definitions. */ | |
4036 | ||
4037 | static void | |
4038 | add_partial_subprogram (struct partial_die_info *pdi, | |
4039 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 4040 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
4041 | { |
4042 | if (pdi->tag == DW_TAG_subprogram) | |
4043 | { | |
4044 | if (pdi->has_pc_info) | |
4045 | { | |
4046 | if (pdi->lowpc < *lowpc) | |
4047 | *lowpc = pdi->lowpc; | |
4048 | if (pdi->highpc > *highpc) | |
4049 | *highpc = pdi->highpc; | |
5734ee8b DJ |
4050 | if (need_pc) |
4051 | { | |
4052 | CORE_ADDR baseaddr; | |
4053 | struct objfile *objfile = cu->objfile; | |
4054 | ||
4055 | baseaddr = ANOFFSET (objfile->section_offsets, | |
4056 | SECT_OFF_TEXT (objfile)); | |
4057 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
4058 | pdi->lowpc + baseaddr, |
4059 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 4060 | cu->per_cu->v.psymtab); |
5734ee8b | 4061 | } |
bc30ff58 | 4062 | if (!pdi->is_declaration) |
e8d05480 JB |
4063 | /* Ignore subprogram DIEs that do not have a name, they are |
4064 | illegal. Do not emit a complaint at this point, we will | |
4065 | do so when we convert this psymtab into a symtab. */ | |
4066 | if (pdi->name) | |
4067 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
4068 | } |
4069 | } | |
6e70227d | 4070 | |
bc30ff58 JB |
4071 | if (! pdi->has_children) |
4072 | return; | |
4073 | ||
4074 | if (cu->language == language_ada) | |
4075 | { | |
4076 | pdi = pdi->die_child; | |
4077 | while (pdi != NULL) | |
4078 | { | |
4079 | fixup_partial_die (pdi, cu); | |
4080 | if (pdi->tag == DW_TAG_subprogram | |
4081 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 4082 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
4083 | pdi = pdi->die_sibling; |
4084 | } | |
4085 | } | |
4086 | } | |
4087 | ||
91c24f0a DC |
4088 | /* Read a partial die corresponding to an enumeration type. */ |
4089 | ||
72bf9492 DJ |
4090 | static void |
4091 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
4092 | struct dwarf2_cu *cu) | |
91c24f0a | 4093 | { |
72bf9492 | 4094 | struct partial_die_info *pdi; |
91c24f0a DC |
4095 | |
4096 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
4097 | add_partial_symbol (enum_pdi, cu); |
4098 | ||
4099 | pdi = enum_pdi->die_child; | |
4100 | while (pdi) | |
91c24f0a | 4101 | { |
72bf9492 | 4102 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 4103 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 4104 | else |
72bf9492 DJ |
4105 | add_partial_symbol (pdi, cu); |
4106 | pdi = pdi->die_sibling; | |
91c24f0a | 4107 | } |
91c24f0a DC |
4108 | } |
4109 | ||
4bb7a0a7 DJ |
4110 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
4111 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
4112 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
4113 | the initial number. */ | |
4114 | ||
4115 | static struct abbrev_info * | |
fe1b8b76 | 4116 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 4117 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
4118 | { |
4119 | bfd *abfd = cu->objfile->obfd; | |
4120 | unsigned int abbrev_number; | |
4121 | struct abbrev_info *abbrev; | |
4122 | ||
4123 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4124 | ||
4125 | if (abbrev_number == 0) | |
4126 | return NULL; | |
4127 | ||
4128 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
4129 | if (!abbrev) | |
4130 | { | |
3e43a32a MS |
4131 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), |
4132 | abbrev_number, bfd_get_filename (abfd)); | |
4bb7a0a7 DJ |
4133 | } |
4134 | ||
4135 | return abbrev; | |
4136 | } | |
4137 | ||
93311388 DE |
4138 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4139 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
4140 | DIE. Any children of the skipped DIEs will also be skipped. */ |
4141 | ||
fe1b8b76 | 4142 | static gdb_byte * |
93311388 | 4143 | skip_children (gdb_byte *buffer, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
4144 | { |
4145 | struct abbrev_info *abbrev; | |
4146 | unsigned int bytes_read; | |
4147 | ||
4148 | while (1) | |
4149 | { | |
4150 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
4151 | if (abbrev == NULL) | |
4152 | return info_ptr + bytes_read; | |
4153 | else | |
93311388 | 4154 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
4bb7a0a7 DJ |
4155 | } |
4156 | } | |
4157 | ||
93311388 DE |
4158 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
4159 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
4160 | abbrev corresponding to that skipped uleb128 should be passed in |
4161 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
4162 | children. */ | |
4163 | ||
fe1b8b76 | 4164 | static gdb_byte * |
93311388 DE |
4165 | skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
4166 | struct abbrev_info *abbrev, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
4167 | { |
4168 | unsigned int bytes_read; | |
4169 | struct attribute attr; | |
4170 | bfd *abfd = cu->objfile->obfd; | |
4171 | unsigned int form, i; | |
4172 | ||
4173 | for (i = 0; i < abbrev->num_attrs; i++) | |
4174 | { | |
4175 | /* The only abbrev we care about is DW_AT_sibling. */ | |
4176 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
4177 | { | |
4178 | read_attribute (&attr, &abbrev->attrs[i], | |
4179 | abfd, info_ptr, cu); | |
4180 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
4181 | complaint (&symfile_complaints, |
4182 | _("ignoring absolute DW_AT_sibling")); | |
4bb7a0a7 | 4183 | else |
93311388 | 4184 | return buffer + dwarf2_get_ref_die_offset (&attr); |
4bb7a0a7 DJ |
4185 | } |
4186 | ||
4187 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
4188 | form = abbrev->attrs[i].form; | |
4189 | skip_attribute: | |
4190 | switch (form) | |
4191 | { | |
4bb7a0a7 | 4192 | case DW_FORM_ref_addr: |
ae411497 TT |
4193 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
4194 | and later it is offset sized. */ | |
4195 | if (cu->header.version == 2) | |
4196 | info_ptr += cu->header.addr_size; | |
4197 | else | |
4198 | info_ptr += cu->header.offset_size; | |
4199 | break; | |
4200 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
4201 | info_ptr += cu->header.addr_size; |
4202 | break; | |
4203 | case DW_FORM_data1: | |
4204 | case DW_FORM_ref1: | |
4205 | case DW_FORM_flag: | |
4206 | info_ptr += 1; | |
4207 | break; | |
2dc7f7b3 TT |
4208 | case DW_FORM_flag_present: |
4209 | break; | |
4bb7a0a7 DJ |
4210 | case DW_FORM_data2: |
4211 | case DW_FORM_ref2: | |
4212 | info_ptr += 2; | |
4213 | break; | |
4214 | case DW_FORM_data4: | |
4215 | case DW_FORM_ref4: | |
4216 | info_ptr += 4; | |
4217 | break; | |
4218 | case DW_FORM_data8: | |
4219 | case DW_FORM_ref8: | |
55f1336d | 4220 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
4221 | info_ptr += 8; |
4222 | break; | |
4223 | case DW_FORM_string: | |
9b1c24c8 | 4224 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
4225 | info_ptr += bytes_read; |
4226 | break; | |
2dc7f7b3 | 4227 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
4228 | case DW_FORM_strp: |
4229 | info_ptr += cu->header.offset_size; | |
4230 | break; | |
2dc7f7b3 | 4231 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
4232 | case DW_FORM_block: |
4233 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4234 | info_ptr += bytes_read; | |
4235 | break; | |
4236 | case DW_FORM_block1: | |
4237 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
4238 | break; | |
4239 | case DW_FORM_block2: | |
4240 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
4241 | break; | |
4242 | case DW_FORM_block4: | |
4243 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
4244 | break; | |
4245 | case DW_FORM_sdata: | |
4246 | case DW_FORM_udata: | |
4247 | case DW_FORM_ref_udata: | |
4248 | info_ptr = skip_leb128 (abfd, info_ptr); | |
4249 | break; | |
4250 | case DW_FORM_indirect: | |
4251 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4252 | info_ptr += bytes_read; | |
4253 | /* We need to continue parsing from here, so just go back to | |
4254 | the top. */ | |
4255 | goto skip_attribute; | |
4256 | ||
4257 | default: | |
3e43a32a MS |
4258 | error (_("Dwarf Error: Cannot handle %s " |
4259 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
4260 | dwarf_form_name (form), |
4261 | bfd_get_filename (abfd)); | |
4262 | } | |
4263 | } | |
4264 | ||
4265 | if (abbrev->has_children) | |
93311388 | 4266 | return skip_children (buffer, info_ptr, cu); |
4bb7a0a7 DJ |
4267 | else |
4268 | return info_ptr; | |
4269 | } | |
4270 | ||
93311388 DE |
4271 | /* Locate ORIG_PDI's sibling. |
4272 | INFO_PTR should point to the start of the next DIE after ORIG_PDI | |
4273 | in BUFFER. */ | |
91c24f0a | 4274 | |
fe1b8b76 | 4275 | static gdb_byte * |
93311388 DE |
4276 | locate_pdi_sibling (struct partial_die_info *orig_pdi, |
4277 | gdb_byte *buffer, gdb_byte *info_ptr, | |
e7c27a73 | 4278 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
4279 | { |
4280 | /* Do we know the sibling already? */ | |
72bf9492 | 4281 | |
91c24f0a DC |
4282 | if (orig_pdi->sibling) |
4283 | return orig_pdi->sibling; | |
4284 | ||
4285 | /* Are there any children to deal with? */ | |
4286 | ||
4287 | if (!orig_pdi->has_children) | |
4288 | return info_ptr; | |
4289 | ||
4bb7a0a7 | 4290 | /* Skip the children the long way. */ |
91c24f0a | 4291 | |
93311388 | 4292 | return skip_children (buffer, info_ptr, cu); |
91c24f0a DC |
4293 | } |
4294 | ||
c906108c SS |
4295 | /* Expand this partial symbol table into a full symbol table. */ |
4296 | ||
4297 | static void | |
fba45db2 | 4298 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 4299 | { |
c906108c SS |
4300 | if (pst != NULL) |
4301 | { | |
4302 | if (pst->readin) | |
4303 | { | |
3e43a32a MS |
4304 | warning (_("bug: psymtab for %s is already read in."), |
4305 | pst->filename); | |
c906108c SS |
4306 | } |
4307 | else | |
4308 | { | |
4309 | if (info_verbose) | |
4310 | { | |
3e43a32a MS |
4311 | printf_filtered (_("Reading in symbols for %s..."), |
4312 | pst->filename); | |
c906108c SS |
4313 | gdb_flush (gdb_stdout); |
4314 | } | |
4315 | ||
10b3939b DJ |
4316 | /* Restore our global data. */ |
4317 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
4318 | dwarf2_objfile_data_key); | |
4319 | ||
b2ab525c KB |
4320 | /* If this psymtab is constructed from a debug-only objfile, the |
4321 | has_section_at_zero flag will not necessarily be correct. We | |
4322 | can get the correct value for this flag by looking at the data | |
4323 | associated with the (presumably stripped) associated objfile. */ | |
4324 | if (pst->objfile->separate_debug_objfile_backlink) | |
4325 | { | |
4326 | struct dwarf2_per_objfile *dpo_backlink | |
4327 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
4328 | dwarf2_objfile_data_key); | |
9a619af0 | 4329 | |
b2ab525c KB |
4330 | dwarf2_per_objfile->has_section_at_zero |
4331 | = dpo_backlink->has_section_at_zero; | |
4332 | } | |
4333 | ||
98bfdba5 PA |
4334 | dwarf2_per_objfile->reading_partial_symbols = 0; |
4335 | ||
c906108c SS |
4336 | psymtab_to_symtab_1 (pst); |
4337 | ||
4338 | /* Finish up the debug error message. */ | |
4339 | if (info_verbose) | |
a3f17187 | 4340 | printf_filtered (_("done.\n")); |
c906108c SS |
4341 | } |
4342 | } | |
4343 | } | |
4344 | ||
10b3939b DJ |
4345 | /* Add PER_CU to the queue. */ |
4346 | ||
4347 | static void | |
03dd20cc | 4348 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b DJ |
4349 | { |
4350 | struct dwarf2_queue_item *item; | |
4351 | ||
4352 | per_cu->queued = 1; | |
4353 | item = xmalloc (sizeof (*item)); | |
4354 | item->per_cu = per_cu; | |
4355 | item->next = NULL; | |
4356 | ||
4357 | if (dwarf2_queue == NULL) | |
4358 | dwarf2_queue = item; | |
4359 | else | |
4360 | dwarf2_queue_tail->next = item; | |
4361 | ||
4362 | dwarf2_queue_tail = item; | |
4363 | } | |
4364 | ||
4365 | /* Process the queue. */ | |
4366 | ||
4367 | static void | |
4368 | process_queue (struct objfile *objfile) | |
4369 | { | |
4370 | struct dwarf2_queue_item *item, *next_item; | |
4371 | ||
03dd20cc DJ |
4372 | /* The queue starts out with one item, but following a DIE reference |
4373 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
4374 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
4375 | { | |
9291a0cd TT |
4376 | if (dwarf2_per_objfile->using_index |
4377 | ? !item->per_cu->v.quick->symtab | |
4378 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
10b3939b DJ |
4379 | process_full_comp_unit (item->per_cu); |
4380 | ||
4381 | item->per_cu->queued = 0; | |
4382 | next_item = item->next; | |
4383 | xfree (item); | |
4384 | } | |
4385 | ||
4386 | dwarf2_queue_tail = NULL; | |
4387 | } | |
4388 | ||
4389 | /* Free all allocated queue entries. This function only releases anything if | |
4390 | an error was thrown; if the queue was processed then it would have been | |
4391 | freed as we went along. */ | |
4392 | ||
4393 | static void | |
4394 | dwarf2_release_queue (void *dummy) | |
4395 | { | |
4396 | struct dwarf2_queue_item *item, *last; | |
4397 | ||
4398 | item = dwarf2_queue; | |
4399 | while (item) | |
4400 | { | |
4401 | /* Anything still marked queued is likely to be in an | |
4402 | inconsistent state, so discard it. */ | |
4403 | if (item->per_cu->queued) | |
4404 | { | |
4405 | if (item->per_cu->cu != NULL) | |
4406 | free_one_cached_comp_unit (item->per_cu->cu); | |
4407 | item->per_cu->queued = 0; | |
4408 | } | |
4409 | ||
4410 | last = item; | |
4411 | item = item->next; | |
4412 | xfree (last); | |
4413 | } | |
4414 | ||
4415 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
4416 | } | |
4417 | ||
4418 | /* Read in full symbols for PST, and anything it depends on. */ | |
4419 | ||
c906108c | 4420 | static void |
fba45db2 | 4421 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 4422 | { |
10b3939b | 4423 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 4424 | struct cleanup *back_to; |
aaa75496 JB |
4425 | int i; |
4426 | ||
4427 | for (i = 0; i < pst->number_of_dependencies; i++) | |
4428 | if (!pst->dependencies[i]->readin) | |
4429 | { | |
4430 | /* Inform about additional files that need to be read in. */ | |
4431 | if (info_verbose) | |
4432 | { | |
a3f17187 | 4433 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
4434 | fputs_filtered (" ", gdb_stdout); |
4435 | wrap_here (""); | |
4436 | fputs_filtered ("and ", gdb_stdout); | |
4437 | wrap_here (""); | |
4438 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 4439 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
4440 | gdb_flush (gdb_stdout); |
4441 | } | |
4442 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
4443 | } | |
4444 | ||
e38df1d0 | 4445 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
4446 | |
4447 | if (per_cu == NULL) | |
aaa75496 JB |
4448 | { |
4449 | /* It's an include file, no symbols to read for it. | |
4450 | Everything is in the parent symtab. */ | |
4451 | pst->readin = 1; | |
4452 | return; | |
4453 | } | |
c906108c | 4454 | |
9291a0cd | 4455 | dw2_do_instantiate_symtab (pst->objfile, per_cu); |
10b3939b DJ |
4456 | } |
4457 | ||
93311388 | 4458 | /* Load the DIEs associated with PER_CU into memory. */ |
10b3939b | 4459 | |
93311388 | 4460 | static void |
3e43a32a MS |
4461 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
4462 | struct objfile *objfile) | |
10b3939b | 4463 | { |
31ffec48 | 4464 | bfd *abfd = objfile->obfd; |
10b3939b | 4465 | struct dwarf2_cu *cu; |
c764a876 | 4466 | unsigned int offset; |
93311388 | 4467 | gdb_byte *info_ptr, *beg_of_comp_unit; |
98bfdba5 | 4468 | struct cleanup *free_abbrevs_cleanup = NULL, *free_cu_cleanup = NULL; |
10b3939b | 4469 | struct attribute *attr; |
98bfdba5 | 4470 | int read_cu = 0; |
6502dd73 | 4471 | |
348e048f DE |
4472 | gdb_assert (! per_cu->from_debug_types); |
4473 | ||
c906108c | 4474 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 4475 | offset = per_cu->offset; |
6502dd73 | 4476 | |
be391dca | 4477 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
dce234bc | 4478 | info_ptr = dwarf2_per_objfile->info.buffer + offset; |
93311388 | 4479 | beg_of_comp_unit = info_ptr; |
63d06c5c | 4480 | |
98bfdba5 PA |
4481 | if (per_cu->cu == NULL) |
4482 | { | |
9816fde3 JK |
4483 | cu = xmalloc (sizeof (*cu)); |
4484 | init_one_comp_unit (cu, objfile); | |
98bfdba5 PA |
4485 | |
4486 | read_cu = 1; | |
c906108c | 4487 | |
98bfdba5 PA |
4488 | /* If an error occurs while loading, release our storage. */ |
4489 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 4490 | |
98bfdba5 PA |
4491 | /* Read in the comp_unit header. */ |
4492 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); | |
c906108c | 4493 | |
98bfdba5 PA |
4494 | /* Complete the cu_header. */ |
4495 | cu->header.offset = offset; | |
4496 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
93311388 | 4497 | |
98bfdba5 PA |
4498 | /* Read the abbrevs for this compilation unit. */ |
4499 | dwarf2_read_abbrevs (abfd, cu); | |
4500 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); | |
10b3939b | 4501 | |
98bfdba5 PA |
4502 | /* Link this compilation unit into the compilation unit tree. */ |
4503 | per_cu->cu = cu; | |
4504 | cu->per_cu = per_cu; | |
98bfdba5 PA |
4505 | |
4506 | /* Link this CU into read_in_chain. */ | |
4507 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4508 | dwarf2_per_objfile->read_in_chain = per_cu; | |
4509 | } | |
4510 | else | |
4511 | { | |
4512 | cu = per_cu->cu; | |
4513 | info_ptr += cu->header.first_die_offset; | |
4514 | } | |
e142c38c | 4515 | |
93311388 | 4516 | cu->dies = read_comp_unit (info_ptr, cu); |
10b3939b DJ |
4517 | |
4518 | /* We try not to read any attributes in this function, because not | |
4519 | all objfiles needed for references have been loaded yet, and symbol | |
4520 | table processing isn't initialized. But we have to set the CU language, | |
4521 | or we won't be able to build types correctly. */ | |
9816fde3 | 4522 | prepare_one_comp_unit (cu, cu->dies); |
10b3939b | 4523 | |
a6c727b2 DJ |
4524 | /* Similarly, if we do not read the producer, we can not apply |
4525 | producer-specific interpretation. */ | |
4526 | attr = dwarf2_attr (cu->dies, DW_AT_producer, cu); | |
4527 | if (attr) | |
4528 | cu->producer = DW_STRING (attr); | |
4529 | ||
98bfdba5 PA |
4530 | if (read_cu) |
4531 | { | |
4532 | do_cleanups (free_abbrevs_cleanup); | |
e142c38c | 4533 | |
98bfdba5 PA |
4534 | /* We've successfully allocated this compilation unit. Let our |
4535 | caller clean it up when finished with it. */ | |
4536 | discard_cleanups (free_cu_cleanup); | |
4537 | } | |
10b3939b DJ |
4538 | } |
4539 | ||
3da10d80 KS |
4540 | /* Add a DIE to the delayed physname list. */ |
4541 | ||
4542 | static void | |
4543 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
4544 | const char *name, struct die_info *die, | |
4545 | struct dwarf2_cu *cu) | |
4546 | { | |
4547 | struct delayed_method_info mi; | |
4548 | mi.type = type; | |
4549 | mi.fnfield_index = fnfield_index; | |
4550 | mi.index = index; | |
4551 | mi.name = name; | |
4552 | mi.die = die; | |
4553 | VEC_safe_push (delayed_method_info, cu->method_list, &mi); | |
4554 | } | |
4555 | ||
4556 | /* A cleanup for freeing the delayed method list. */ | |
4557 | ||
4558 | static void | |
4559 | free_delayed_list (void *ptr) | |
4560 | { | |
4561 | struct dwarf2_cu *cu = (struct dwarf2_cu *) ptr; | |
4562 | if (cu->method_list != NULL) | |
4563 | { | |
4564 | VEC_free (delayed_method_info, cu->method_list); | |
4565 | cu->method_list = NULL; | |
4566 | } | |
4567 | } | |
4568 | ||
4569 | /* Compute the physnames of any methods on the CU's method list. | |
4570 | ||
4571 | The computation of method physnames is delayed in order to avoid the | |
4572 | (bad) condition that one of the method's formal parameters is of an as yet | |
4573 | incomplete type. */ | |
4574 | ||
4575 | static void | |
4576 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
4577 | { | |
4578 | int i; | |
4579 | struct delayed_method_info *mi; | |
4580 | for (i = 0; VEC_iterate (delayed_method_info, cu->method_list, i, mi) ; ++i) | |
4581 | { | |
4582 | char *physname; | |
4583 | struct fn_fieldlist *fn_flp | |
4584 | = &TYPE_FN_FIELDLIST (mi->type, mi->fnfield_index); | |
4585 | physname = (char *) dwarf2_physname ((char *) mi->name, mi->die, cu); | |
4586 | fn_flp->fn_fields[mi->index].physname = physname ? physname : ""; | |
4587 | } | |
4588 | } | |
4589 | ||
10b3939b DJ |
4590 | /* Generate full symbol information for PST and CU, whose DIEs have |
4591 | already been loaded into memory. */ | |
4592 | ||
4593 | static void | |
4594 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
4595 | { | |
10b3939b | 4596 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 4597 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
4598 | CORE_ADDR lowpc, highpc; |
4599 | struct symtab *symtab; | |
3da10d80 | 4600 | struct cleanup *back_to, *delayed_list_cleanup; |
10b3939b DJ |
4601 | CORE_ADDR baseaddr; |
4602 | ||
4603 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
4604 | ||
10b3939b DJ |
4605 | buildsym_init (); |
4606 | back_to = make_cleanup (really_free_pendings, NULL); | |
3da10d80 | 4607 | delayed_list_cleanup = make_cleanup (free_delayed_list, cu); |
10b3939b DJ |
4608 | |
4609 | cu->list_in_scope = &file_symbols; | |
c906108c | 4610 | |
d85a05f0 | 4611 | dwarf2_find_base_address (cu->dies, cu); |
0d53c4c4 | 4612 | |
c906108c | 4613 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 4614 | process_die (cu->dies, cu); |
c906108c | 4615 | |
3da10d80 KS |
4616 | /* Now that we have processed all the DIEs in the CU, all the types |
4617 | should be complete, and it should now be safe to compute all of the | |
4618 | physnames. */ | |
4619 | compute_delayed_physnames (cu); | |
4620 | do_cleanups (delayed_list_cleanup); | |
4621 | ||
fae299cd DC |
4622 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
4623 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
4624 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 4625 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 4626 | |
613e1657 | 4627 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
4628 | |
4629 | /* Set symtab language to language from DW_AT_language. | |
4630 | If the compilation is from a C file generated by language preprocessors, | |
4631 | do not set the language if it was already deduced by start_subfile. */ | |
4632 | if (symtab != NULL | |
10b3939b | 4633 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 4634 | { |
10b3939b | 4635 | symtab->language = cu->language; |
c906108c | 4636 | } |
9291a0cd TT |
4637 | |
4638 | if (dwarf2_per_objfile->using_index) | |
4639 | per_cu->v.quick->symtab = symtab; | |
4640 | else | |
4641 | { | |
4642 | struct partial_symtab *pst = per_cu->v.psymtab; | |
4643 | pst->symtab = symtab; | |
4644 | pst->readin = 1; | |
4645 | } | |
c906108c SS |
4646 | |
4647 | do_cleanups (back_to); | |
4648 | } | |
4649 | ||
4650 | /* Process a die and its children. */ | |
4651 | ||
4652 | static void | |
e7c27a73 | 4653 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4654 | { |
4655 | switch (die->tag) | |
4656 | { | |
4657 | case DW_TAG_padding: | |
4658 | break; | |
4659 | case DW_TAG_compile_unit: | |
e7c27a73 | 4660 | read_file_scope (die, cu); |
c906108c | 4661 | break; |
348e048f DE |
4662 | case DW_TAG_type_unit: |
4663 | read_type_unit_scope (die, cu); | |
4664 | break; | |
c906108c | 4665 | case DW_TAG_subprogram: |
c906108c | 4666 | case DW_TAG_inlined_subroutine: |
edb3359d | 4667 | read_func_scope (die, cu); |
c906108c SS |
4668 | break; |
4669 | case DW_TAG_lexical_block: | |
14898363 L |
4670 | case DW_TAG_try_block: |
4671 | case DW_TAG_catch_block: | |
e7c27a73 | 4672 | read_lexical_block_scope (die, cu); |
c906108c SS |
4673 | break; |
4674 | case DW_TAG_class_type: | |
680b30c7 | 4675 | case DW_TAG_interface_type: |
c906108c SS |
4676 | case DW_TAG_structure_type: |
4677 | case DW_TAG_union_type: | |
134d01f1 | 4678 | process_structure_scope (die, cu); |
c906108c SS |
4679 | break; |
4680 | case DW_TAG_enumeration_type: | |
134d01f1 | 4681 | process_enumeration_scope (die, cu); |
c906108c | 4682 | break; |
134d01f1 | 4683 | |
f792889a DJ |
4684 | /* These dies have a type, but processing them does not create |
4685 | a symbol or recurse to process the children. Therefore we can | |
4686 | read them on-demand through read_type_die. */ | |
c906108c | 4687 | case DW_TAG_subroutine_type: |
72019c9c | 4688 | case DW_TAG_set_type: |
c906108c | 4689 | case DW_TAG_array_type: |
c906108c | 4690 | case DW_TAG_pointer_type: |
c906108c | 4691 | case DW_TAG_ptr_to_member_type: |
c906108c | 4692 | case DW_TAG_reference_type: |
c906108c | 4693 | case DW_TAG_string_type: |
c906108c | 4694 | break; |
134d01f1 | 4695 | |
c906108c | 4696 | case DW_TAG_base_type: |
a02abb62 | 4697 | case DW_TAG_subrange_type: |
cb249c71 | 4698 | case DW_TAG_typedef: |
134d01f1 DJ |
4699 | /* Add a typedef symbol for the type definition, if it has a |
4700 | DW_AT_name. */ | |
f792889a | 4701 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 4702 | break; |
c906108c | 4703 | case DW_TAG_common_block: |
e7c27a73 | 4704 | read_common_block (die, cu); |
c906108c SS |
4705 | break; |
4706 | case DW_TAG_common_inclusion: | |
4707 | break; | |
d9fa45fe | 4708 | case DW_TAG_namespace: |
63d06c5c | 4709 | processing_has_namespace_info = 1; |
e7c27a73 | 4710 | read_namespace (die, cu); |
d9fa45fe | 4711 | break; |
5d7cb8df | 4712 | case DW_TAG_module: |
f55ee35c | 4713 | processing_has_namespace_info = 1; |
5d7cb8df JK |
4714 | read_module (die, cu); |
4715 | break; | |
d9fa45fe DC |
4716 | case DW_TAG_imported_declaration: |
4717 | case DW_TAG_imported_module: | |
63d06c5c | 4718 | processing_has_namespace_info = 1; |
27aa8d6a SW |
4719 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
4720 | || cu->language != language_fortran)) | |
4721 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
4722 | dwarf_tag_name (die->tag)); | |
4723 | read_import_statement (die, cu); | |
d9fa45fe | 4724 | break; |
c906108c | 4725 | default: |
e7c27a73 | 4726 | new_symbol (die, NULL, cu); |
c906108c SS |
4727 | break; |
4728 | } | |
4729 | } | |
4730 | ||
94af9270 KS |
4731 | /* A helper function for dwarf2_compute_name which determines whether DIE |
4732 | needs to have the name of the scope prepended to the name listed in the | |
4733 | die. */ | |
4734 | ||
4735 | static int | |
4736 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
4737 | { | |
1c809c68 TT |
4738 | struct attribute *attr; |
4739 | ||
94af9270 KS |
4740 | switch (die->tag) |
4741 | { | |
4742 | case DW_TAG_namespace: | |
4743 | case DW_TAG_typedef: | |
4744 | case DW_TAG_class_type: | |
4745 | case DW_TAG_interface_type: | |
4746 | case DW_TAG_structure_type: | |
4747 | case DW_TAG_union_type: | |
4748 | case DW_TAG_enumeration_type: | |
4749 | case DW_TAG_enumerator: | |
4750 | case DW_TAG_subprogram: | |
4751 | case DW_TAG_member: | |
4752 | return 1; | |
4753 | ||
4754 | case DW_TAG_variable: | |
c2b0a229 | 4755 | case DW_TAG_constant: |
94af9270 KS |
4756 | /* We only need to prefix "globally" visible variables. These include |
4757 | any variable marked with DW_AT_external or any variable that | |
4758 | lives in a namespace. [Variables in anonymous namespaces | |
4759 | require prefixing, but they are not DW_AT_external.] */ | |
4760 | ||
4761 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
4762 | { | |
4763 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 4764 | |
94af9270 KS |
4765 | return die_needs_namespace (die_specification (die, &spec_cu), |
4766 | spec_cu); | |
4767 | } | |
4768 | ||
1c809c68 | 4769 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
4770 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
4771 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
4772 | return 0; |
4773 | /* A variable in a lexical block of some kind does not need a | |
4774 | namespace, even though in C++ such variables may be external | |
4775 | and have a mangled name. */ | |
4776 | if (die->parent->tag == DW_TAG_lexical_block | |
4777 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
4778 | || die->parent->tag == DW_TAG_catch_block |
4779 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
4780 | return 0; |
4781 | return 1; | |
94af9270 KS |
4782 | |
4783 | default: | |
4784 | return 0; | |
4785 | } | |
4786 | } | |
4787 | ||
98bfdba5 PA |
4788 | /* Retrieve the last character from a mem_file. */ |
4789 | ||
4790 | static void | |
4791 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
4792 | { | |
4793 | char *last_char_p = (char *) object; | |
4794 | ||
4795 | if (length > 0) | |
4796 | *last_char_p = buffer[length - 1]; | |
4797 | } | |
4798 | ||
94af9270 KS |
4799 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
4800 | compute the physname for the object, which include a method's | |
4801 | formal parameters (C++/Java) and return type (Java). | |
4802 | ||
af6b7be1 JB |
4803 | For Ada, return the DIE's linkage name rather than the fully qualified |
4804 | name. PHYSNAME is ignored.. | |
4805 | ||
94af9270 KS |
4806 | The result is allocated on the objfile_obstack and canonicalized. */ |
4807 | ||
4808 | static const char * | |
4809 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
4810 | int physname) | |
4811 | { | |
4812 | if (name == NULL) | |
4813 | name = dwarf2_name (die, cu); | |
4814 | ||
f55ee35c JK |
4815 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
4816 | compute it by typename_concat inside GDB. */ | |
4817 | if (cu->language == language_ada | |
4818 | || (cu->language == language_fortran && physname)) | |
4819 | { | |
4820 | /* For Ada unit, we prefer the linkage name over the name, as | |
4821 | the former contains the exported name, which the user expects | |
4822 | to be able to reference. Ideally, we want the user to be able | |
4823 | to reference this entity using either natural or linkage name, | |
4824 | but we haven't started looking at this enhancement yet. */ | |
4825 | struct attribute *attr; | |
4826 | ||
4827 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
4828 | if (attr == NULL) | |
4829 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
4830 | if (attr && DW_STRING (attr)) | |
4831 | return DW_STRING (attr); | |
4832 | } | |
4833 | ||
94af9270 KS |
4834 | /* These are the only languages we know how to qualify names in. */ |
4835 | if (name != NULL | |
f55ee35c JK |
4836 | && (cu->language == language_cplus || cu->language == language_java |
4837 | || cu->language == language_fortran)) | |
94af9270 KS |
4838 | { |
4839 | if (die_needs_namespace (die, cu)) | |
4840 | { | |
4841 | long length; | |
4842 | char *prefix; | |
4843 | struct ui_file *buf; | |
4844 | ||
4845 | prefix = determine_prefix (die, cu); | |
4846 | buf = mem_fileopen (); | |
4847 | if (*prefix != '\0') | |
4848 | { | |
f55ee35c JK |
4849 | char *prefixed_name = typename_concat (NULL, prefix, name, |
4850 | physname, cu); | |
9a619af0 | 4851 | |
94af9270 KS |
4852 | fputs_unfiltered (prefixed_name, buf); |
4853 | xfree (prefixed_name); | |
4854 | } | |
4855 | else | |
62d5b8da | 4856 | fputs_unfiltered (name, buf); |
94af9270 | 4857 | |
98bfdba5 PA |
4858 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
4859 | as children with DW_TAG_template_type_param or | |
4860 | DW_TAG_value_type_param. If the latter, add them to the name | |
4861 | here. If the name already has template parameters, then | |
4862 | skip this step; some versions of GCC emit both, and | |
4863 | it is more efficient to use the pre-computed name. | |
4864 | ||
4865 | Something to keep in mind about this process: it is very | |
4866 | unlikely, or in some cases downright impossible, to produce | |
4867 | something that will match the mangled name of a function. | |
4868 | If the definition of the function has the same debug info, | |
4869 | we should be able to match up with it anyway. But fallbacks | |
4870 | using the minimal symbol, for instance to find a method | |
4871 | implemented in a stripped copy of libstdc++, will not work. | |
4872 | If we do not have debug info for the definition, we will have to | |
4873 | match them up some other way. | |
4874 | ||
4875 | When we do name matching there is a related problem with function | |
4876 | templates; two instantiated function templates are allowed to | |
4877 | differ only by their return types, which we do not add here. */ | |
4878 | ||
4879 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
4880 | { | |
4881 | struct attribute *attr; | |
4882 | struct die_info *child; | |
4883 | int first = 1; | |
4884 | ||
4885 | die->building_fullname = 1; | |
4886 | ||
4887 | for (child = die->child; child != NULL; child = child->sibling) | |
4888 | { | |
4889 | struct type *type; | |
4890 | long value; | |
4891 | gdb_byte *bytes; | |
4892 | struct dwarf2_locexpr_baton *baton; | |
4893 | struct value *v; | |
4894 | ||
4895 | if (child->tag != DW_TAG_template_type_param | |
4896 | && child->tag != DW_TAG_template_value_param) | |
4897 | continue; | |
4898 | ||
4899 | if (first) | |
4900 | { | |
4901 | fputs_unfiltered ("<", buf); | |
4902 | first = 0; | |
4903 | } | |
4904 | else | |
4905 | fputs_unfiltered (", ", buf); | |
4906 | ||
4907 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
4908 | if (attr == NULL) | |
4909 | { | |
4910 | complaint (&symfile_complaints, | |
4911 | _("template parameter missing DW_AT_type")); | |
4912 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
4913 | continue; | |
4914 | } | |
4915 | type = die_type (child, cu); | |
4916 | ||
4917 | if (child->tag == DW_TAG_template_type_param) | |
4918 | { | |
4919 | c_print_type (type, "", buf, -1, 0); | |
4920 | continue; | |
4921 | } | |
4922 | ||
4923 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
4924 | if (attr == NULL) | |
4925 | { | |
4926 | complaint (&symfile_complaints, | |
3e43a32a MS |
4927 | _("template parameter missing " |
4928 | "DW_AT_const_value")); | |
98bfdba5 PA |
4929 | fputs_unfiltered ("UNKNOWN_VALUE", buf); |
4930 | continue; | |
4931 | } | |
4932 | ||
4933 | dwarf2_const_value_attr (attr, type, name, | |
4934 | &cu->comp_unit_obstack, cu, | |
4935 | &value, &bytes, &baton); | |
4936 | ||
4937 | if (TYPE_NOSIGN (type)) | |
4938 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
4939 | changed, this can use value_print instead. */ | |
4940 | c_printchar (value, type, buf); | |
4941 | else | |
4942 | { | |
4943 | struct value_print_options opts; | |
4944 | ||
4945 | if (baton != NULL) | |
4946 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
4947 | baton->data, | |
4948 | baton->size, | |
4949 | baton->per_cu); | |
4950 | else if (bytes != NULL) | |
4951 | { | |
4952 | v = allocate_value (type); | |
4953 | memcpy (value_contents_writeable (v), bytes, | |
4954 | TYPE_LENGTH (type)); | |
4955 | } | |
4956 | else | |
4957 | v = value_from_longest (type, value); | |
4958 | ||
3e43a32a MS |
4959 | /* Specify decimal so that we do not depend on |
4960 | the radix. */ | |
98bfdba5 PA |
4961 | get_formatted_print_options (&opts, 'd'); |
4962 | opts.raw = 1; | |
4963 | value_print (v, buf, &opts); | |
4964 | release_value (v); | |
4965 | value_free (v); | |
4966 | } | |
4967 | } | |
4968 | ||
4969 | die->building_fullname = 0; | |
4970 | ||
4971 | if (!first) | |
4972 | { | |
4973 | /* Close the argument list, with a space if necessary | |
4974 | (nested templates). */ | |
4975 | char last_char = '\0'; | |
4976 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
4977 | if (last_char == '>') | |
4978 | fputs_unfiltered (" >", buf); | |
4979 | else | |
4980 | fputs_unfiltered (">", buf); | |
4981 | } | |
4982 | } | |
4983 | ||
94af9270 KS |
4984 | /* For Java and C++ methods, append formal parameter type |
4985 | information, if PHYSNAME. */ | |
6e70227d | 4986 | |
94af9270 KS |
4987 | if (physname && die->tag == DW_TAG_subprogram |
4988 | && (cu->language == language_cplus | |
4989 | || cu->language == language_java)) | |
4990 | { | |
4991 | struct type *type = read_type_die (die, cu); | |
4992 | ||
3167638f | 4993 | c_type_print_args (type, buf, 1, cu->language); |
94af9270 KS |
4994 | |
4995 | if (cu->language == language_java) | |
4996 | { | |
4997 | /* For java, we must append the return type to method | |
0963b4bd | 4998 | names. */ |
94af9270 KS |
4999 | if (die->tag == DW_TAG_subprogram) |
5000 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
5001 | 0, 0); | |
5002 | } | |
5003 | else if (cu->language == language_cplus) | |
5004 | { | |
60430eff DJ |
5005 | /* Assume that an artificial first parameter is |
5006 | "this", but do not crash if it is not. RealView | |
5007 | marks unnamed (and thus unused) parameters as | |
5008 | artificial; there is no way to differentiate | |
5009 | the two cases. */ | |
94af9270 KS |
5010 | if (TYPE_NFIELDS (type) > 0 |
5011 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 5012 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
5013 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
5014 | 0)))) | |
94af9270 KS |
5015 | fputs_unfiltered (" const", buf); |
5016 | } | |
5017 | } | |
5018 | ||
5019 | name = ui_file_obsavestring (buf, &cu->objfile->objfile_obstack, | |
5020 | &length); | |
5021 | ui_file_delete (buf); | |
5022 | ||
5023 | if (cu->language == language_cplus) | |
5024 | { | |
5025 | char *cname | |
5026 | = dwarf2_canonicalize_name (name, cu, | |
5027 | &cu->objfile->objfile_obstack); | |
9a619af0 | 5028 | |
94af9270 KS |
5029 | if (cname != NULL) |
5030 | name = cname; | |
5031 | } | |
5032 | } | |
5033 | } | |
5034 | ||
5035 | return name; | |
5036 | } | |
5037 | ||
0114d602 DJ |
5038 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
5039 | If scope qualifiers are appropriate they will be added. The result | |
5040 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
5041 | not have a name. NAME may either be from a previous call to |
5042 | dwarf2_name or NULL. | |
5043 | ||
0963b4bd | 5044 | The output string will be canonicalized (if C++/Java). */ |
0114d602 DJ |
5045 | |
5046 | static const char * | |
94af9270 | 5047 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 5048 | { |
94af9270 KS |
5049 | return dwarf2_compute_name (name, die, cu, 0); |
5050 | } | |
0114d602 | 5051 | |
94af9270 KS |
5052 | /* Construct a physname for the given DIE in CU. NAME may either be |
5053 | from a previous call to dwarf2_name or NULL. The result will be | |
5054 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
5055 | name. | |
0114d602 | 5056 | |
94af9270 | 5057 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 5058 | |
94af9270 KS |
5059 | static const char * |
5060 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
5061 | { | |
5062 | return dwarf2_compute_name (name, die, cu, 1); | |
0114d602 DJ |
5063 | } |
5064 | ||
27aa8d6a SW |
5065 | /* Read the import statement specified by the given die and record it. */ |
5066 | ||
5067 | static void | |
5068 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
5069 | { | |
5070 | struct attribute *import_attr; | |
5071 | struct die_info *imported_die; | |
de4affc9 | 5072 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 5073 | const char *imported_name; |
794684b6 | 5074 | const char *imported_name_prefix; |
13387711 SW |
5075 | const char *canonical_name; |
5076 | const char *import_alias; | |
5077 | const char *imported_declaration = NULL; | |
794684b6 | 5078 | const char *import_prefix; |
13387711 SW |
5079 | |
5080 | char *temp; | |
27aa8d6a SW |
5081 | |
5082 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
5083 | if (import_attr == NULL) | |
5084 | { | |
5085 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
5086 | dwarf_tag_name (die->tag)); | |
5087 | return; | |
5088 | } | |
5089 | ||
de4affc9 CC |
5090 | imported_cu = cu; |
5091 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
5092 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
5093 | if (imported_name == NULL) |
5094 | { | |
5095 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
5096 | ||
5097 | The import in the following code: | |
5098 | namespace A | |
5099 | { | |
5100 | typedef int B; | |
5101 | } | |
5102 | ||
5103 | int main () | |
5104 | { | |
5105 | using A::B; | |
5106 | B b; | |
5107 | return b; | |
5108 | } | |
5109 | ||
5110 | ... | |
5111 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
5112 | <52> DW_AT_decl_file : 1 | |
5113 | <53> DW_AT_decl_line : 6 | |
5114 | <54> DW_AT_import : <0x75> | |
5115 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
5116 | <59> DW_AT_name : B | |
5117 | <5b> DW_AT_decl_file : 1 | |
5118 | <5c> DW_AT_decl_line : 2 | |
5119 | <5d> DW_AT_type : <0x6e> | |
5120 | ... | |
5121 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
5122 | <76> DW_AT_byte_size : 4 | |
5123 | <77> DW_AT_encoding : 5 (signed) | |
5124 | ||
5125 | imports the wrong die ( 0x75 instead of 0x58 ). | |
5126 | This case will be ignored until the gcc bug is fixed. */ | |
5127 | return; | |
5128 | } | |
5129 | ||
82856980 SW |
5130 | /* Figure out the local name after import. */ |
5131 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 5132 | |
794684b6 SW |
5133 | /* Figure out where the statement is being imported to. */ |
5134 | import_prefix = determine_prefix (die, cu); | |
5135 | ||
5136 | /* Figure out what the scope of the imported die is and prepend it | |
5137 | to the name of the imported die. */ | |
de4affc9 | 5138 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 5139 | |
f55ee35c JK |
5140 | if (imported_die->tag != DW_TAG_namespace |
5141 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 5142 | { |
13387711 SW |
5143 | imported_declaration = imported_name; |
5144 | canonical_name = imported_name_prefix; | |
794684b6 | 5145 | } |
13387711 | 5146 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 5147 | { |
13387711 SW |
5148 | temp = alloca (strlen (imported_name_prefix) |
5149 | + 2 + strlen (imported_name) + 1); | |
5150 | strcpy (temp, imported_name_prefix); | |
5151 | strcat (temp, "::"); | |
5152 | strcat (temp, imported_name); | |
5153 | canonical_name = temp; | |
794684b6 | 5154 | } |
13387711 SW |
5155 | else |
5156 | canonical_name = imported_name; | |
794684b6 | 5157 | |
c0cc3a76 SW |
5158 | cp_add_using_directive (import_prefix, |
5159 | canonical_name, | |
5160 | import_alias, | |
13387711 | 5161 | imported_declaration, |
c0cc3a76 | 5162 | &cu->objfile->objfile_obstack); |
27aa8d6a SW |
5163 | } |
5164 | ||
5fb290d7 | 5165 | static void |
e142c38c | 5166 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 5167 | { |
e142c38c | 5168 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
5169 | } |
5170 | ||
ae2de4f8 DE |
5171 | /* Cleanup function for read_file_scope. */ |
5172 | ||
cb1df416 DJ |
5173 | static void |
5174 | free_cu_line_header (void *arg) | |
5175 | { | |
5176 | struct dwarf2_cu *cu = arg; | |
5177 | ||
5178 | free_line_header (cu->line_header); | |
5179 | cu->line_header = NULL; | |
5180 | } | |
5181 | ||
9291a0cd TT |
5182 | static void |
5183 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
5184 | char **name, char **comp_dir) | |
5185 | { | |
5186 | struct attribute *attr; | |
5187 | ||
5188 | *name = NULL; | |
5189 | *comp_dir = NULL; | |
5190 | ||
5191 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5192 | is not a source language identifier. */ | |
5193 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5194 | if (attr) | |
5195 | { | |
5196 | *name = DW_STRING (attr); | |
5197 | } | |
5198 | ||
5199 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5200 | if (attr) | |
5201 | *comp_dir = DW_STRING (attr); | |
5202 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
5203 | { | |
5204 | *comp_dir = ldirname (*name); | |
5205 | if (*comp_dir != NULL) | |
5206 | make_cleanup (xfree, *comp_dir); | |
5207 | } | |
5208 | if (*comp_dir != NULL) | |
5209 | { | |
5210 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
5211 | directory, get rid of it. */ | |
5212 | char *cp = strchr (*comp_dir, ':'); | |
5213 | ||
5214 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
5215 | *comp_dir = cp + 1; | |
5216 | } | |
5217 | ||
5218 | if (*name == NULL) | |
5219 | *name = "<unknown>"; | |
5220 | } | |
5221 | ||
ae2de4f8 DE |
5222 | /* Process DW_TAG_compile_unit. */ |
5223 | ||
c906108c | 5224 | static void |
e7c27a73 | 5225 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5226 | { |
e7c27a73 | 5227 | struct objfile *objfile = cu->objfile; |
debd256d | 5228 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 5229 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
5230 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
5231 | struct attribute *attr; | |
e1024ff1 | 5232 | char *name = NULL; |
c906108c SS |
5233 | char *comp_dir = NULL; |
5234 | struct die_info *child_die; | |
5235 | bfd *abfd = objfile->obfd; | |
debd256d | 5236 | struct line_header *line_header = 0; |
e142c38c | 5237 | CORE_ADDR baseaddr; |
6e70227d | 5238 | |
e142c38c | 5239 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 5240 | |
fae299cd | 5241 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
5242 | |
5243 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
5244 | from finish_block. */ | |
2acceee2 | 5245 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
5246 | lowpc = highpc; |
5247 | lowpc += baseaddr; | |
5248 | highpc += baseaddr; | |
5249 | ||
9291a0cd | 5250 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 5251 | |
e142c38c | 5252 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
5253 | if (attr) |
5254 | { | |
e142c38c | 5255 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
5256 | } |
5257 | ||
b0f35d58 | 5258 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
6e70227d | 5259 | if (attr) |
b0f35d58 | 5260 | cu->producer = DW_STRING (attr); |
303b6f5d | 5261 | |
f4b8a18d KW |
5262 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
5263 | standardised yet. As a workaround for the language detection we fall | |
5264 | back to the DW_AT_producer string. */ | |
5265 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
5266 | cu->language = language_opencl; | |
5267 | ||
0963b4bd | 5268 | /* We assume that we're processing GCC output. */ |
c906108c | 5269 | processing_gcc_compilation = 2; |
c906108c | 5270 | |
df8a16a1 DJ |
5271 | processing_has_namespace_info = 0; |
5272 | ||
c906108c SS |
5273 | start_symtab (name, comp_dir, lowpc); |
5274 | record_debugformat ("DWARF 2"); | |
303b6f5d | 5275 | record_producer (cu->producer); |
c906108c | 5276 | |
e142c38c | 5277 | initialize_cu_func_list (cu); |
c906108c | 5278 | |
cb1df416 DJ |
5279 | /* Decode line number information if present. We do this before |
5280 | processing child DIEs, so that the line header table is available | |
5281 | for DW_AT_decl_file. */ | |
e142c38c | 5282 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
5283 | if (attr) |
5284 | { | |
debd256d | 5285 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 5286 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
5287 | if (line_header) |
5288 | { | |
cb1df416 DJ |
5289 | cu->line_header = line_header; |
5290 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 5291 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 5292 | } |
5fb290d7 | 5293 | } |
debd256d | 5294 | |
cb1df416 DJ |
5295 | /* Process all dies in compilation unit. */ |
5296 | if (die->child != NULL) | |
5297 | { | |
5298 | child_die = die->child; | |
5299 | while (child_die && child_die->tag) | |
5300 | { | |
5301 | process_die (child_die, cu); | |
5302 | child_die = sibling_die (child_die); | |
5303 | } | |
5304 | } | |
5305 | ||
2e276125 JB |
5306 | /* Decode macro information, if present. Dwarf 2 macro information |
5307 | refers to information in the line number info statement program | |
5308 | header, so we can only read it if we've read the header | |
5309 | successfully. */ | |
e142c38c | 5310 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 5311 | if (attr && line_header) |
2e276125 JB |
5312 | { |
5313 | unsigned int macro_offset = DW_UNSND (attr); | |
9a619af0 | 5314 | |
2e276125 | 5315 | dwarf_decode_macros (line_header, macro_offset, |
e7c27a73 | 5316 | comp_dir, abfd, cu); |
2e276125 | 5317 | } |
debd256d | 5318 | do_cleanups (back_to); |
5fb290d7 DJ |
5319 | } |
5320 | ||
ae2de4f8 DE |
5321 | /* Process DW_TAG_type_unit. |
5322 | For TUs we want to skip the first top level sibling if it's not the | |
348e048f DE |
5323 | actual type being defined by this TU. In this case the first top |
5324 | level sibling is there to provide context only. */ | |
5325 | ||
5326 | static void | |
5327 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
5328 | { | |
5329 | struct objfile *objfile = cu->objfile; | |
5330 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
5331 | CORE_ADDR lowpc; | |
5332 | struct attribute *attr; | |
5333 | char *name = NULL; | |
5334 | char *comp_dir = NULL; | |
5335 | struct die_info *child_die; | |
5336 | bfd *abfd = objfile->obfd; | |
348e048f DE |
5337 | |
5338 | /* start_symtab needs a low pc, but we don't really have one. | |
5339 | Do what read_file_scope would do in the absence of such info. */ | |
5340 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5341 | ||
5342 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5343 | is not a source language identifier. */ | |
5344 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5345 | if (attr) | |
5346 | name = DW_STRING (attr); | |
5347 | ||
5348 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5349 | if (attr) | |
5350 | comp_dir = DW_STRING (attr); | |
5351 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
5352 | { | |
5353 | comp_dir = ldirname (name); | |
5354 | if (comp_dir != NULL) | |
5355 | make_cleanup (xfree, comp_dir); | |
5356 | } | |
5357 | ||
5358 | if (name == NULL) | |
5359 | name = "<unknown>"; | |
5360 | ||
5361 | attr = dwarf2_attr (die, DW_AT_language, cu); | |
5362 | if (attr) | |
5363 | set_cu_language (DW_UNSND (attr), cu); | |
5364 | ||
5365 | /* This isn't technically needed today. It is done for symmetry | |
5366 | with read_file_scope. */ | |
5367 | attr = dwarf2_attr (die, DW_AT_producer, cu); | |
6e70227d | 5368 | if (attr) |
348e048f DE |
5369 | cu->producer = DW_STRING (attr); |
5370 | ||
0963b4bd | 5371 | /* We assume that we're processing GCC output. */ |
348e048f DE |
5372 | processing_gcc_compilation = 2; |
5373 | ||
5374 | processing_has_namespace_info = 0; | |
5375 | ||
5376 | start_symtab (name, comp_dir, lowpc); | |
5377 | record_debugformat ("DWARF 2"); | |
5378 | record_producer (cu->producer); | |
5379 | ||
5380 | /* Process the dies in the type unit. */ | |
5381 | if (die->child == NULL) | |
5382 | { | |
5383 | dump_die_for_error (die); | |
5384 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
5385 | bfd_get_filename (abfd)); | |
5386 | } | |
5387 | ||
5388 | child_die = die->child; | |
5389 | ||
5390 | while (child_die && child_die->tag) | |
5391 | { | |
5392 | process_die (child_die, cu); | |
5393 | ||
5394 | child_die = sibling_die (child_die); | |
5395 | } | |
5396 | ||
5397 | do_cleanups (back_to); | |
5398 | } | |
5399 | ||
5fb290d7 | 5400 | static void |
e142c38c DJ |
5401 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
5402 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
5403 | { |
5404 | struct function_range *thisfn; | |
5405 | ||
5406 | thisfn = (struct function_range *) | |
7b5a2f43 | 5407 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
5408 | thisfn->name = name; |
5409 | thisfn->lowpc = lowpc; | |
5410 | thisfn->highpc = highpc; | |
5411 | thisfn->seen_line = 0; | |
5412 | thisfn->next = NULL; | |
5413 | ||
e142c38c DJ |
5414 | if (cu->last_fn == NULL) |
5415 | cu->first_fn = thisfn; | |
5fb290d7 | 5416 | else |
e142c38c | 5417 | cu->last_fn->next = thisfn; |
5fb290d7 | 5418 | |
e142c38c | 5419 | cu->last_fn = thisfn; |
c906108c SS |
5420 | } |
5421 | ||
d389af10 JK |
5422 | /* qsort helper for inherit_abstract_dies. */ |
5423 | ||
5424 | static int | |
5425 | unsigned_int_compar (const void *ap, const void *bp) | |
5426 | { | |
5427 | unsigned int a = *(unsigned int *) ap; | |
5428 | unsigned int b = *(unsigned int *) bp; | |
5429 | ||
5430 | return (a > b) - (b > a); | |
5431 | } | |
5432 | ||
5433 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3e43a32a MS |
5434 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
5435 | already referenced by DW_AT_abstract_origin from the children of the | |
5436 | current DIE. */ | |
d389af10 JK |
5437 | |
5438 | static void | |
5439 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
5440 | { | |
5441 | struct die_info *child_die; | |
5442 | unsigned die_children_count; | |
5443 | /* CU offsets which were referenced by children of the current DIE. */ | |
5444 | unsigned *offsets; | |
5445 | unsigned *offsets_end, *offsetp; | |
5446 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ | |
5447 | struct die_info *origin_die; | |
5448 | /* Iterator of the ORIGIN_DIE children. */ | |
5449 | struct die_info *origin_child_die; | |
5450 | struct cleanup *cleanups; | |
5451 | struct attribute *attr; | |
cd02d79d PA |
5452 | struct dwarf2_cu *origin_cu; |
5453 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
5454 | |
5455 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
5456 | if (!attr) | |
5457 | return; | |
5458 | ||
cd02d79d PA |
5459 | /* Note that following die references may follow to a die in a |
5460 | different cu. */ | |
5461 | ||
5462 | origin_cu = cu; | |
5463 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
5464 | ||
5465 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
5466 | symbols in. */ | |
5467 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
5468 | origin_cu->list_in_scope = cu->list_in_scope; | |
5469 | ||
edb3359d DJ |
5470 | if (die->tag != origin_die->tag |
5471 | && !(die->tag == DW_TAG_inlined_subroutine | |
5472 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5473 | complaint (&symfile_complaints, |
5474 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
5475 | die->offset, origin_die->offset); | |
5476 | ||
5477 | child_die = die->child; | |
5478 | die_children_count = 0; | |
5479 | while (child_die && child_die->tag) | |
5480 | { | |
5481 | child_die = sibling_die (child_die); | |
5482 | die_children_count++; | |
5483 | } | |
5484 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
5485 | cleanups = make_cleanup (xfree, offsets); | |
5486 | ||
5487 | offsets_end = offsets; | |
5488 | child_die = die->child; | |
5489 | while (child_die && child_die->tag) | |
5490 | { | |
c38f313d DJ |
5491 | /* For each CHILD_DIE, find the corresponding child of |
5492 | ORIGIN_DIE. If there is more than one layer of | |
5493 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
5494 | but GCC versions at least through 4.4 generate this (GCC PR | |
5495 | 40573). */ | |
5496 | struct die_info *child_origin_die = child_die; | |
cd02d79d | 5497 | struct dwarf2_cu *child_origin_cu = cu; |
9a619af0 | 5498 | |
c38f313d DJ |
5499 | while (1) |
5500 | { | |
cd02d79d PA |
5501 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
5502 | child_origin_cu); | |
c38f313d DJ |
5503 | if (attr == NULL) |
5504 | break; | |
cd02d79d PA |
5505 | child_origin_die = follow_die_ref (child_origin_die, attr, |
5506 | &child_origin_cu); | |
c38f313d DJ |
5507 | } |
5508 | ||
d389af10 JK |
5509 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
5510 | counterpart may exist. */ | |
c38f313d | 5511 | if (child_origin_die != child_die) |
d389af10 | 5512 | { |
edb3359d DJ |
5513 | if (child_die->tag != child_origin_die->tag |
5514 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
5515 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5516 | complaint (&symfile_complaints, |
5517 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5518 | "different tags"), child_die->offset, | |
5519 | child_origin_die->offset); | |
c38f313d DJ |
5520 | if (child_origin_die->parent != origin_die) |
5521 | complaint (&symfile_complaints, | |
5522 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5523 | "different parents"), child_die->offset, | |
5524 | child_origin_die->offset); | |
5525 | else | |
5526 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
5527 | } |
5528 | child_die = sibling_die (child_die); | |
5529 | } | |
5530 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
5531 | unsigned_int_compar); | |
5532 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
5533 | if (offsetp[-1] == *offsetp) | |
3e43a32a MS |
5534 | complaint (&symfile_complaints, |
5535 | _("Multiple children of DIE 0x%x refer " | |
5536 | "to DIE 0x%x as their abstract origin"), | |
d389af10 JK |
5537 | die->offset, *offsetp); |
5538 | ||
5539 | offsetp = offsets; | |
5540 | origin_child_die = origin_die->child; | |
5541 | while (origin_child_die && origin_child_die->tag) | |
5542 | { | |
5543 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
5544 | while (offsetp < offsets_end && *offsetp < origin_child_die->offset) | |
5545 | offsetp++; | |
5546 | if (offsetp >= offsets_end || *offsetp > origin_child_die->offset) | |
5547 | { | |
5548 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
cd02d79d | 5549 | process_die (origin_child_die, origin_cu); |
d389af10 JK |
5550 | } |
5551 | origin_child_die = sibling_die (origin_child_die); | |
5552 | } | |
cd02d79d | 5553 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
5554 | |
5555 | do_cleanups (cleanups); | |
5556 | } | |
5557 | ||
c906108c | 5558 | static void |
e7c27a73 | 5559 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5560 | { |
e7c27a73 | 5561 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5562 | struct context_stack *new; |
c906108c SS |
5563 | CORE_ADDR lowpc; |
5564 | CORE_ADDR highpc; | |
5565 | struct die_info *child_die; | |
edb3359d | 5566 | struct attribute *attr, *call_line, *call_file; |
c906108c | 5567 | char *name; |
e142c38c | 5568 | CORE_ADDR baseaddr; |
801e3a5b | 5569 | struct block *block; |
edb3359d | 5570 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
5571 | VEC (symbolp) *template_args = NULL; |
5572 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
5573 | |
5574 | if (inlined_func) | |
5575 | { | |
5576 | /* If we do not have call site information, we can't show the | |
5577 | caller of this inlined function. That's too confusing, so | |
5578 | only use the scope for local variables. */ | |
5579 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
5580 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
5581 | if (call_line == NULL || call_file == NULL) | |
5582 | { | |
5583 | read_lexical_block_scope (die, cu); | |
5584 | return; | |
5585 | } | |
5586 | } | |
c906108c | 5587 | |
e142c38c DJ |
5588 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
5589 | ||
94af9270 | 5590 | name = dwarf2_name (die, cu); |
c906108c | 5591 | |
e8d05480 JB |
5592 | /* Ignore functions with missing or empty names. These are actually |
5593 | illegal according to the DWARF standard. */ | |
5594 | if (name == NULL) | |
5595 | { | |
5596 | complaint (&symfile_complaints, | |
5597 | _("missing name for subprogram DIE at %d"), die->offset); | |
5598 | return; | |
5599 | } | |
5600 | ||
5601 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
5602 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
5603 | { | |
ae4d0c03 PM |
5604 | attr = dwarf2_attr (die, DW_AT_external, cu); |
5605 | if (!attr || !DW_UNSND (attr)) | |
5606 | complaint (&symfile_complaints, | |
3e43a32a MS |
5607 | _("cannot get low and high bounds " |
5608 | "for subprogram DIE at %d"), | |
ae4d0c03 | 5609 | die->offset); |
e8d05480 JB |
5610 | return; |
5611 | } | |
c906108c SS |
5612 | |
5613 | lowpc += baseaddr; | |
5614 | highpc += baseaddr; | |
5615 | ||
5fb290d7 | 5616 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 5617 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 5618 | |
34eaf542 TT |
5619 | /* If we have any template arguments, then we must allocate a |
5620 | different sort of symbol. */ | |
5621 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
5622 | { | |
5623 | if (child_die->tag == DW_TAG_template_type_param | |
5624 | || child_die->tag == DW_TAG_template_value_param) | |
5625 | { | |
5626 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5627 | struct template_symbol); | |
5628 | templ_func->base.is_cplus_template_function = 1; | |
5629 | break; | |
5630 | } | |
5631 | } | |
5632 | ||
c906108c | 5633 | new = push_context (0, lowpc); |
34eaf542 TT |
5634 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
5635 | (struct symbol *) templ_func); | |
4c2df51b | 5636 | |
4cecd739 DJ |
5637 | /* If there is a location expression for DW_AT_frame_base, record |
5638 | it. */ | |
e142c38c | 5639 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 5640 | if (attr) |
c034e007 AC |
5641 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
5642 | expression is being recorded directly in the function's symbol | |
5643 | and not in a separate frame-base object. I guess this hack is | |
5644 | to avoid adding some sort of frame-base adjunct/annex to the | |
5645 | function's symbol :-(. The problem with doing this is that it | |
5646 | results in a function symbol with a location expression that | |
5647 | has nothing to do with the location of the function, ouch! The | |
5648 | relationship should be: a function's symbol has-a frame base; a | |
5649 | frame-base has-a location expression. */ | |
e7c27a73 | 5650 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 5651 | |
e142c38c | 5652 | cu->list_in_scope = &local_symbols; |
c906108c | 5653 | |
639d11d3 | 5654 | if (die->child != NULL) |
c906108c | 5655 | { |
639d11d3 | 5656 | child_die = die->child; |
c906108c SS |
5657 | while (child_die && child_die->tag) |
5658 | { | |
34eaf542 TT |
5659 | if (child_die->tag == DW_TAG_template_type_param |
5660 | || child_die->tag == DW_TAG_template_value_param) | |
5661 | { | |
5662 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
5663 | ||
f1078f66 DJ |
5664 | if (arg != NULL) |
5665 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
5666 | } |
5667 | else | |
5668 | process_die (child_die, cu); | |
c906108c SS |
5669 | child_die = sibling_die (child_die); |
5670 | } | |
5671 | } | |
5672 | ||
d389af10 JK |
5673 | inherit_abstract_dies (die, cu); |
5674 | ||
4a811a97 UW |
5675 | /* If we have a DW_AT_specification, we might need to import using |
5676 | directives from the context of the specification DIE. See the | |
5677 | comment in determine_prefix. */ | |
5678 | if (cu->language == language_cplus | |
5679 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
5680 | { | |
5681 | struct dwarf2_cu *spec_cu = cu; | |
5682 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
5683 | ||
5684 | while (spec_die) | |
5685 | { | |
5686 | child_die = spec_die->child; | |
5687 | while (child_die && child_die->tag) | |
5688 | { | |
5689 | if (child_die->tag == DW_TAG_imported_module) | |
5690 | process_die (child_die, spec_cu); | |
5691 | child_die = sibling_die (child_die); | |
5692 | } | |
5693 | ||
5694 | /* In some cases, GCC generates specification DIEs that | |
5695 | themselves contain DW_AT_specification attributes. */ | |
5696 | spec_die = die_specification (spec_die, &spec_cu); | |
5697 | } | |
5698 | } | |
5699 | ||
c906108c SS |
5700 | new = pop_context (); |
5701 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
5702 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
5703 | lowpc, highpc, objfile); | |
5704 | ||
df8a16a1 | 5705 | /* For C++, set the block's scope. */ |
f55ee35c | 5706 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 5707 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 5708 | determine_prefix (die, cu), |
df8a16a1 DJ |
5709 | processing_has_namespace_info); |
5710 | ||
801e3a5b JB |
5711 | /* If we have address ranges, record them. */ |
5712 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 5713 | |
34eaf542 TT |
5714 | /* Attach template arguments to function. */ |
5715 | if (! VEC_empty (symbolp, template_args)) | |
5716 | { | |
5717 | gdb_assert (templ_func != NULL); | |
5718 | ||
5719 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
5720 | templ_func->template_arguments | |
5721 | = obstack_alloc (&objfile->objfile_obstack, | |
5722 | (templ_func->n_template_arguments | |
5723 | * sizeof (struct symbol *))); | |
5724 | memcpy (templ_func->template_arguments, | |
5725 | VEC_address (symbolp, template_args), | |
5726 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
5727 | VEC_free (symbolp, template_args); | |
5728 | } | |
5729 | ||
208d8187 JB |
5730 | /* In C++, we can have functions nested inside functions (e.g., when |
5731 | a function declares a class that has methods). This means that | |
5732 | when we finish processing a function scope, we may need to go | |
5733 | back to building a containing block's symbol lists. */ | |
5734 | local_symbols = new->locals; | |
5735 | param_symbols = new->params; | |
27aa8d6a | 5736 | using_directives = new->using_directives; |
208d8187 | 5737 | |
921e78cf JB |
5738 | /* If we've finished processing a top-level function, subsequent |
5739 | symbols go in the file symbol list. */ | |
5740 | if (outermost_context_p ()) | |
e142c38c | 5741 | cu->list_in_scope = &file_symbols; |
c906108c SS |
5742 | } |
5743 | ||
5744 | /* Process all the DIES contained within a lexical block scope. Start | |
5745 | a new scope, process the dies, and then close the scope. */ | |
5746 | ||
5747 | static void | |
e7c27a73 | 5748 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5749 | { |
e7c27a73 | 5750 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5751 | struct context_stack *new; |
c906108c SS |
5752 | CORE_ADDR lowpc, highpc; |
5753 | struct die_info *child_die; | |
e142c38c DJ |
5754 | CORE_ADDR baseaddr; |
5755 | ||
5756 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
5757 | |
5758 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
5759 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
5760 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 5761 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 5762 | describe ranges. */ |
d85a05f0 | 5763 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
5764 | return; |
5765 | lowpc += baseaddr; | |
5766 | highpc += baseaddr; | |
5767 | ||
5768 | push_context (0, lowpc); | |
639d11d3 | 5769 | if (die->child != NULL) |
c906108c | 5770 | { |
639d11d3 | 5771 | child_die = die->child; |
c906108c SS |
5772 | while (child_die && child_die->tag) |
5773 | { | |
e7c27a73 | 5774 | process_die (child_die, cu); |
c906108c SS |
5775 | child_die = sibling_die (child_die); |
5776 | } | |
5777 | } | |
5778 | new = pop_context (); | |
5779 | ||
8540c487 | 5780 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 5781 | { |
801e3a5b JB |
5782 | struct block *block |
5783 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
5784 | highpc, objfile); | |
5785 | ||
5786 | /* Note that recording ranges after traversing children, as we | |
5787 | do here, means that recording a parent's ranges entails | |
5788 | walking across all its children's ranges as they appear in | |
5789 | the address map, which is quadratic behavior. | |
5790 | ||
5791 | It would be nicer to record the parent's ranges before | |
5792 | traversing its children, simply overriding whatever you find | |
5793 | there. But since we don't even decide whether to create a | |
5794 | block until after we've traversed its children, that's hard | |
5795 | to do. */ | |
5796 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
5797 | } |
5798 | local_symbols = new->locals; | |
27aa8d6a | 5799 | using_directives = new->using_directives; |
c906108c SS |
5800 | } |
5801 | ||
43039443 | 5802 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
5803 | Return 1 if the attributes are present and valid, otherwise, return 0. |
5804 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
5805 | |
5806 | static int | |
5807 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
5808 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
5809 | struct partial_symtab *ranges_pst) | |
43039443 JK |
5810 | { |
5811 | struct objfile *objfile = cu->objfile; | |
5812 | struct comp_unit_head *cu_header = &cu->header; | |
5813 | bfd *obfd = objfile->obfd; | |
5814 | unsigned int addr_size = cu_header->addr_size; | |
5815 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
5816 | /* Base address selection entry. */ | |
5817 | CORE_ADDR base; | |
5818 | int found_base; | |
5819 | unsigned int dummy; | |
5820 | gdb_byte *buffer; | |
5821 | CORE_ADDR marker; | |
5822 | int low_set; | |
5823 | CORE_ADDR low = 0; | |
5824 | CORE_ADDR high = 0; | |
ff013f42 | 5825 | CORE_ADDR baseaddr; |
43039443 | 5826 | |
d00adf39 DE |
5827 | found_base = cu->base_known; |
5828 | base = cu->base_address; | |
43039443 | 5829 | |
be391dca | 5830 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 5831 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
5832 | { |
5833 | complaint (&symfile_complaints, | |
5834 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
5835 | offset); | |
5836 | return 0; | |
5837 | } | |
dce234bc | 5838 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
5839 | |
5840 | /* Read in the largest possible address. */ | |
5841 | marker = read_address (obfd, buffer, cu, &dummy); | |
5842 | if ((marker & mask) == mask) | |
5843 | { | |
5844 | /* If we found the largest possible address, then | |
5845 | read the base address. */ | |
5846 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5847 | buffer += 2 * addr_size; | |
5848 | offset += 2 * addr_size; | |
5849 | found_base = 1; | |
5850 | } | |
5851 | ||
5852 | low_set = 0; | |
5853 | ||
e7030f15 | 5854 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 5855 | |
43039443 JK |
5856 | while (1) |
5857 | { | |
5858 | CORE_ADDR range_beginning, range_end; | |
5859 | ||
5860 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
5861 | buffer += addr_size; | |
5862 | range_end = read_address (obfd, buffer, cu, &dummy); | |
5863 | buffer += addr_size; | |
5864 | offset += 2 * addr_size; | |
5865 | ||
5866 | /* An end of list marker is a pair of zero addresses. */ | |
5867 | if (range_beginning == 0 && range_end == 0) | |
5868 | /* Found the end of list entry. */ | |
5869 | break; | |
5870 | ||
5871 | /* Each base address selection entry is a pair of 2 values. | |
5872 | The first is the largest possible address, the second is | |
5873 | the base address. Check for a base address here. */ | |
5874 | if ((range_beginning & mask) == mask) | |
5875 | { | |
5876 | /* If we found the largest possible address, then | |
5877 | read the base address. */ | |
5878 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5879 | found_base = 1; | |
5880 | continue; | |
5881 | } | |
5882 | ||
5883 | if (!found_base) | |
5884 | { | |
5885 | /* We have no valid base address for the ranges | |
5886 | data. */ | |
5887 | complaint (&symfile_complaints, | |
5888 | _("Invalid .debug_ranges data (no base address)")); | |
5889 | return 0; | |
5890 | } | |
5891 | ||
9277c30c UW |
5892 | if (range_beginning > range_end) |
5893 | { | |
5894 | /* Inverted range entries are invalid. */ | |
5895 | complaint (&symfile_complaints, | |
5896 | _("Invalid .debug_ranges data (inverted range)")); | |
5897 | return 0; | |
5898 | } | |
5899 | ||
5900 | /* Empty range entries have no effect. */ | |
5901 | if (range_beginning == range_end) | |
5902 | continue; | |
5903 | ||
43039443 JK |
5904 | range_beginning += base; |
5905 | range_end += base; | |
5906 | ||
9277c30c | 5907 | if (ranges_pst != NULL) |
ff013f42 | 5908 | addrmap_set_empty (objfile->psymtabs_addrmap, |
3e43a32a MS |
5909 | range_beginning + baseaddr, |
5910 | range_end - 1 + baseaddr, | |
ff013f42 JK |
5911 | ranges_pst); |
5912 | ||
43039443 JK |
5913 | /* FIXME: This is recording everything as a low-high |
5914 | segment of consecutive addresses. We should have a | |
5915 | data structure for discontiguous block ranges | |
5916 | instead. */ | |
5917 | if (! low_set) | |
5918 | { | |
5919 | low = range_beginning; | |
5920 | high = range_end; | |
5921 | low_set = 1; | |
5922 | } | |
5923 | else | |
5924 | { | |
5925 | if (range_beginning < low) | |
5926 | low = range_beginning; | |
5927 | if (range_end > high) | |
5928 | high = range_end; | |
5929 | } | |
5930 | } | |
5931 | ||
5932 | if (! low_set) | |
5933 | /* If the first entry is an end-of-list marker, the range | |
5934 | describes an empty scope, i.e. no instructions. */ | |
5935 | return 0; | |
5936 | ||
5937 | if (low_return) | |
5938 | *low_return = low; | |
5939 | if (high_return) | |
5940 | *high_return = high; | |
5941 | return 1; | |
5942 | } | |
5943 | ||
af34e669 DJ |
5944 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
5945 | are present and valid, otherwise, return 0. Return -1 if the range is | |
5946 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 5947 | static int |
af34e669 | 5948 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
5949 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
5950 | struct partial_symtab *pst) | |
c906108c SS |
5951 | { |
5952 | struct attribute *attr; | |
af34e669 DJ |
5953 | CORE_ADDR low = 0; |
5954 | CORE_ADDR high = 0; | |
5955 | int ret = 0; | |
c906108c | 5956 | |
e142c38c | 5957 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 5958 | if (attr) |
af34e669 DJ |
5959 | { |
5960 | high = DW_ADDR (attr); | |
e142c38c | 5961 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
5962 | if (attr) |
5963 | low = DW_ADDR (attr); | |
5964 | else | |
5965 | /* Found high w/o low attribute. */ | |
5966 | return 0; | |
5967 | ||
5968 | /* Found consecutive range of addresses. */ | |
5969 | ret = 1; | |
5970 | } | |
c906108c | 5971 | else |
af34e669 | 5972 | { |
e142c38c | 5973 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
5974 | if (attr != NULL) |
5975 | { | |
af34e669 | 5976 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 5977 | .debug_ranges section. */ |
d85a05f0 | 5978 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 5979 | return 0; |
43039443 | 5980 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
5981 | ret = -1; |
5982 | } | |
5983 | } | |
c906108c | 5984 | |
9373cf26 JK |
5985 | /* read_partial_die has also the strict LOW < HIGH requirement. */ |
5986 | if (high <= low) | |
c906108c SS |
5987 | return 0; |
5988 | ||
5989 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
5990 | eliminate duplicate copies of functions and vtables and such. | |
5991 | The linker will arbitrarily choose one and discard the others. | |
5992 | The AT_*_pc values for such functions refer to local labels in | |
5993 | these sections. If the section from that file was discarded, the | |
5994 | labels are not in the output, so the relocs get a value of 0. | |
5995 | If this is a discarded function, mark the pc bounds as invalid, | |
5996 | so that GDB will ignore it. */ | |
72dca2f5 | 5997 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
5998 | return 0; |
5999 | ||
6000 | *lowpc = low; | |
6001 | *highpc = high; | |
af34e669 | 6002 | return ret; |
c906108c SS |
6003 | } |
6004 | ||
b084d499 JB |
6005 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
6006 | its low and high PC addresses. Do nothing if these addresses could not | |
6007 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
6008 | and HIGHPC to the high address if greater than HIGHPC. */ | |
6009 | ||
6010 | static void | |
6011 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
6012 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
6013 | struct dwarf2_cu *cu) | |
6014 | { | |
6015 | CORE_ADDR low, high; | |
6016 | struct die_info *child = die->child; | |
6017 | ||
d85a05f0 | 6018 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
6019 | { |
6020 | *lowpc = min (*lowpc, low); | |
6021 | *highpc = max (*highpc, high); | |
6022 | } | |
6023 | ||
6024 | /* If the language does not allow nested subprograms (either inside | |
6025 | subprograms or lexical blocks), we're done. */ | |
6026 | if (cu->language != language_ada) | |
6027 | return; | |
6e70227d | 6028 | |
b084d499 JB |
6029 | /* Check all the children of the given DIE. If it contains nested |
6030 | subprograms, then check their pc bounds. Likewise, we need to | |
6031 | check lexical blocks as well, as they may also contain subprogram | |
6032 | definitions. */ | |
6033 | while (child && child->tag) | |
6034 | { | |
6035 | if (child->tag == DW_TAG_subprogram | |
6036 | || child->tag == DW_TAG_lexical_block) | |
6037 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
6038 | child = sibling_die (child); | |
6039 | } | |
6040 | } | |
6041 | ||
fae299cd DC |
6042 | /* Get the low and high pc's represented by the scope DIE, and store |
6043 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
6044 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
6045 | ||
6046 | static void | |
6047 | get_scope_pc_bounds (struct die_info *die, | |
6048 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
6049 | struct dwarf2_cu *cu) | |
6050 | { | |
6051 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
6052 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
6053 | CORE_ADDR current_low, current_high; | |
6054 | ||
d85a05f0 | 6055 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
6056 | { |
6057 | best_low = current_low; | |
6058 | best_high = current_high; | |
6059 | } | |
6060 | else | |
6061 | { | |
6062 | struct die_info *child = die->child; | |
6063 | ||
6064 | while (child && child->tag) | |
6065 | { | |
6066 | switch (child->tag) { | |
6067 | case DW_TAG_subprogram: | |
b084d499 | 6068 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
6069 | break; |
6070 | case DW_TAG_namespace: | |
f55ee35c | 6071 | case DW_TAG_module: |
fae299cd DC |
6072 | /* FIXME: carlton/2004-01-16: Should we do this for |
6073 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
6074 | that current GCC's always emit the DIEs corresponding | |
6075 | to definitions of methods of classes as children of a | |
6076 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
6077 | the DIEs giving the declarations, which could be | |
6078 | anywhere). But I don't see any reason why the | |
6079 | standards says that they have to be there. */ | |
6080 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
6081 | ||
6082 | if (current_low != ((CORE_ADDR) -1)) | |
6083 | { | |
6084 | best_low = min (best_low, current_low); | |
6085 | best_high = max (best_high, current_high); | |
6086 | } | |
6087 | break; | |
6088 | default: | |
0963b4bd | 6089 | /* Ignore. */ |
fae299cd DC |
6090 | break; |
6091 | } | |
6092 | ||
6093 | child = sibling_die (child); | |
6094 | } | |
6095 | } | |
6096 | ||
6097 | *lowpc = best_low; | |
6098 | *highpc = best_high; | |
6099 | } | |
6100 | ||
801e3a5b JB |
6101 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
6102 | in DIE. */ | |
6103 | static void | |
6104 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
6105 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
6106 | { | |
6107 | struct attribute *attr; | |
6108 | ||
6109 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
6110 | if (attr) | |
6111 | { | |
6112 | CORE_ADDR high = DW_ADDR (attr); | |
9a619af0 | 6113 | |
801e3a5b JB |
6114 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
6115 | if (attr) | |
6116 | { | |
6117 | CORE_ADDR low = DW_ADDR (attr); | |
9a619af0 | 6118 | |
801e3a5b JB |
6119 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
6120 | } | |
6121 | } | |
6122 | ||
6123 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
6124 | if (attr) | |
6125 | { | |
6126 | bfd *obfd = cu->objfile->obfd; | |
6127 | ||
6128 | /* The value of the DW_AT_ranges attribute is the offset of the | |
6129 | address range list in the .debug_ranges section. */ | |
6130 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 6131 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
6132 | |
6133 | /* For some target architectures, but not others, the | |
6134 | read_address function sign-extends the addresses it returns. | |
6135 | To recognize base address selection entries, we need a | |
6136 | mask. */ | |
6137 | unsigned int addr_size = cu->header.addr_size; | |
6138 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
6139 | ||
6140 | /* The base address, to which the next pair is relative. Note | |
6141 | that this 'base' is a DWARF concept: most entries in a range | |
6142 | list are relative, to reduce the number of relocs against the | |
6143 | debugging information. This is separate from this function's | |
6144 | 'baseaddr' argument, which GDB uses to relocate debugging | |
6145 | information from a shared library based on the address at | |
6146 | which the library was loaded. */ | |
d00adf39 DE |
6147 | CORE_ADDR base = cu->base_address; |
6148 | int base_known = cu->base_known; | |
801e3a5b | 6149 | |
be391dca | 6150 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 6151 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
6152 | { |
6153 | complaint (&symfile_complaints, | |
6154 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
6155 | offset); | |
6156 | return; | |
6157 | } | |
6158 | ||
6159 | for (;;) | |
6160 | { | |
6161 | unsigned int bytes_read; | |
6162 | CORE_ADDR start, end; | |
6163 | ||
6164 | start = read_address (obfd, buffer, cu, &bytes_read); | |
6165 | buffer += bytes_read; | |
6166 | end = read_address (obfd, buffer, cu, &bytes_read); | |
6167 | buffer += bytes_read; | |
6168 | ||
6169 | /* Did we find the end of the range list? */ | |
6170 | if (start == 0 && end == 0) | |
6171 | break; | |
6172 | ||
6173 | /* Did we find a base address selection entry? */ | |
6174 | else if ((start & base_select_mask) == base_select_mask) | |
6175 | { | |
6176 | base = end; | |
6177 | base_known = 1; | |
6178 | } | |
6179 | ||
6180 | /* We found an ordinary address range. */ | |
6181 | else | |
6182 | { | |
6183 | if (!base_known) | |
6184 | { | |
6185 | complaint (&symfile_complaints, | |
3e43a32a MS |
6186 | _("Invalid .debug_ranges data " |
6187 | "(no base address)")); | |
801e3a5b JB |
6188 | return; |
6189 | } | |
6190 | ||
9277c30c UW |
6191 | if (start > end) |
6192 | { | |
6193 | /* Inverted range entries are invalid. */ | |
6194 | complaint (&symfile_complaints, | |
6195 | _("Invalid .debug_ranges data " | |
6196 | "(inverted range)")); | |
6197 | return; | |
6198 | } | |
6199 | ||
6200 | /* Empty range entries have no effect. */ | |
6201 | if (start == end) | |
6202 | continue; | |
6203 | ||
6e70227d DE |
6204 | record_block_range (block, |
6205 | baseaddr + base + start, | |
801e3a5b JB |
6206 | baseaddr + base + end - 1); |
6207 | } | |
6208 | } | |
6209 | } | |
6210 | } | |
6211 | ||
c906108c SS |
6212 | /* Add an aggregate field to the field list. */ |
6213 | ||
6214 | static void | |
107d2387 | 6215 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 6216 | struct dwarf2_cu *cu) |
6e70227d | 6217 | { |
e7c27a73 | 6218 | struct objfile *objfile = cu->objfile; |
5e2b427d | 6219 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
6220 | struct nextfield *new_field; |
6221 | struct attribute *attr; | |
6222 | struct field *fp; | |
6223 | char *fieldname = ""; | |
6224 | ||
6225 | /* Allocate a new field list entry and link it in. */ | |
6226 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 6227 | make_cleanup (xfree, new_field); |
c906108c | 6228 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
6229 | |
6230 | if (die->tag == DW_TAG_inheritance) | |
6231 | { | |
6232 | new_field->next = fip->baseclasses; | |
6233 | fip->baseclasses = new_field; | |
6234 | } | |
6235 | else | |
6236 | { | |
6237 | new_field->next = fip->fields; | |
6238 | fip->fields = new_field; | |
6239 | } | |
c906108c SS |
6240 | fip->nfields++; |
6241 | ||
29e0eb9c JK |
6242 | /* Handle accessibility and virtuality of field. |
6243 | The default accessibility for members is public, the default | |
6244 | accessibility for inheritance is private. */ | |
6245 | if (die->tag != DW_TAG_inheritance) | |
6246 | new_field->accessibility = DW_ACCESS_public; | |
c906108c | 6247 | else |
29e0eb9c | 6248 | new_field->accessibility = DW_ACCESS_private; |
c906108c SS |
6249 | new_field->virtuality = DW_VIRTUALITY_none; |
6250 | ||
e142c38c | 6251 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
6252 | if (attr) |
6253 | new_field->accessibility = DW_UNSND (attr); | |
6254 | if (new_field->accessibility != DW_ACCESS_public) | |
6255 | fip->non_public_fields = 1; | |
e142c38c | 6256 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
6257 | if (attr) |
6258 | new_field->virtuality = DW_UNSND (attr); | |
6259 | ||
6260 | fp = &new_field->field; | |
a9a9bd0f | 6261 | |
e142c38c | 6262 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 6263 | { |
a9a9bd0f | 6264 | /* Data member other than a C++ static data member. */ |
6e70227d | 6265 | |
c906108c | 6266 | /* Get type of field. */ |
e7c27a73 | 6267 | fp->type = die_type (die, cu); |
c906108c | 6268 | |
d6a843b5 | 6269 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 6270 | |
c906108c | 6271 | /* Get bit size of field (zero if none). */ |
e142c38c | 6272 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
6273 | if (attr) |
6274 | { | |
6275 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
6276 | } | |
6277 | else | |
6278 | { | |
6279 | FIELD_BITSIZE (*fp) = 0; | |
6280 | } | |
6281 | ||
6282 | /* Get bit offset of field. */ | |
e142c38c | 6283 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
6284 | if (attr) |
6285 | { | |
d4b96c9a | 6286 | int byte_offset = 0; |
c6a0999f | 6287 | |
3690dd37 | 6288 | if (attr_form_is_section_offset (attr)) |
d4b96c9a | 6289 | dwarf2_complex_location_expr_complaint (); |
3690dd37 | 6290 | else if (attr_form_is_constant (attr)) |
c6a0999f | 6291 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
d4b96c9a | 6292 | else if (attr_form_is_block (attr)) |
c6a0999f | 6293 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
d4b96c9a JK |
6294 | else |
6295 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 6296 | |
d6a843b5 | 6297 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); |
c906108c | 6298 | } |
e142c38c | 6299 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
6300 | if (attr) |
6301 | { | |
5e2b427d | 6302 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
6303 | { |
6304 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
6305 | additional bit offset from the MSB of the containing |
6306 | anonymous object to the MSB of the field. We don't | |
6307 | have to do anything special since we don't need to | |
6308 | know the size of the anonymous object. */ | |
c906108c SS |
6309 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
6310 | } | |
6311 | else | |
6312 | { | |
6313 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
6314 | MSB of the anonymous object, subtract off the number of |
6315 | bits from the MSB of the field to the MSB of the | |
6316 | object, and then subtract off the number of bits of | |
6317 | the field itself. The result is the bit offset of | |
6318 | the LSB of the field. */ | |
c906108c SS |
6319 | int anonymous_size; |
6320 | int bit_offset = DW_UNSND (attr); | |
6321 | ||
e142c38c | 6322 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6323 | if (attr) |
6324 | { | |
6325 | /* The size of the anonymous object containing | |
6326 | the bit field is explicit, so use the | |
6327 | indicated size (in bytes). */ | |
6328 | anonymous_size = DW_UNSND (attr); | |
6329 | } | |
6330 | else | |
6331 | { | |
6332 | /* The size of the anonymous object containing | |
6333 | the bit field must be inferred from the type | |
6334 | attribute of the data member containing the | |
6335 | bit field. */ | |
6336 | anonymous_size = TYPE_LENGTH (fp->type); | |
6337 | } | |
6338 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
6339 | - bit_offset - FIELD_BITSIZE (*fp); | |
6340 | } | |
6341 | } | |
6342 | ||
6343 | /* Get name of field. */ | |
39cbfefa DJ |
6344 | fieldname = dwarf2_name (die, cu); |
6345 | if (fieldname == NULL) | |
6346 | fieldname = ""; | |
d8151005 DJ |
6347 | |
6348 | /* The name is already allocated along with this objfile, so we don't | |
6349 | need to duplicate it for the type. */ | |
6350 | fp->name = fieldname; | |
c906108c SS |
6351 | |
6352 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 6353 | pointer or virtual base class pointer) to private. */ |
e142c38c | 6354 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 6355 | { |
d48cc9dd | 6356 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
6357 | new_field->accessibility = DW_ACCESS_private; |
6358 | fip->non_public_fields = 1; | |
6359 | } | |
6360 | } | |
a9a9bd0f | 6361 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 6362 | { |
a9a9bd0f DC |
6363 | /* C++ static member. */ |
6364 | ||
6365 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
6366 | is a declaration, but all versions of G++ as of this writing | |
6367 | (so through at least 3.2.1) incorrectly generate | |
6368 | DW_TAG_variable tags. */ | |
6e70227d | 6369 | |
c906108c | 6370 | char *physname; |
c906108c | 6371 | |
a9a9bd0f | 6372 | /* Get name of field. */ |
39cbfefa DJ |
6373 | fieldname = dwarf2_name (die, cu); |
6374 | if (fieldname == NULL) | |
c906108c SS |
6375 | return; |
6376 | ||
254e6b9e | 6377 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
6378 | if (attr |
6379 | /* Only create a symbol if this is an external value. | |
6380 | new_symbol checks this and puts the value in the global symbol | |
6381 | table, which we want. If it is not external, new_symbol | |
6382 | will try to put the value in cu->list_in_scope which is wrong. */ | |
6383 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
6384 | { |
6385 | /* A static const member, not much different than an enum as far as | |
6386 | we're concerned, except that we can support more types. */ | |
6387 | new_symbol (die, NULL, cu); | |
6388 | } | |
6389 | ||
2df3850c | 6390 | /* Get physical name. */ |
94af9270 | 6391 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c | 6392 | |
d8151005 DJ |
6393 | /* The name is already allocated along with this objfile, so we don't |
6394 | need to duplicate it for the type. */ | |
6395 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 6396 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 6397 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
6398 | } |
6399 | else if (die->tag == DW_TAG_inheritance) | |
6400 | { | |
6401 | /* C++ base class field. */ | |
e142c38c | 6402 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 6403 | if (attr) |
d4b96c9a JK |
6404 | { |
6405 | int byte_offset = 0; | |
6406 | ||
6407 | if (attr_form_is_section_offset (attr)) | |
6408 | dwarf2_complex_location_expr_complaint (); | |
6409 | else if (attr_form_is_constant (attr)) | |
6410 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
6411 | else if (attr_form_is_block (attr)) | |
6412 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
6413 | else | |
6414 | dwarf2_complex_location_expr_complaint (); | |
6415 | ||
6416 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); | |
6417 | } | |
c906108c | 6418 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 6419 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
6420 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
6421 | fip->nbaseclasses++; | |
6422 | } | |
6423 | } | |
6424 | ||
98751a41 JK |
6425 | /* Add a typedef defined in the scope of the FIP's class. */ |
6426 | ||
6427 | static void | |
6428 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
6429 | struct dwarf2_cu *cu) | |
6e70227d | 6430 | { |
98751a41 | 6431 | struct objfile *objfile = cu->objfile; |
98751a41 JK |
6432 | struct typedef_field_list *new_field; |
6433 | struct attribute *attr; | |
6434 | struct typedef_field *fp; | |
6435 | char *fieldname = ""; | |
6436 | ||
6437 | /* Allocate a new field list entry and link it in. */ | |
6438 | new_field = xzalloc (sizeof (*new_field)); | |
6439 | make_cleanup (xfree, new_field); | |
6440 | ||
6441 | gdb_assert (die->tag == DW_TAG_typedef); | |
6442 | ||
6443 | fp = &new_field->field; | |
6444 | ||
6445 | /* Get name of field. */ | |
6446 | fp->name = dwarf2_name (die, cu); | |
6447 | if (fp->name == NULL) | |
6448 | return; | |
6449 | ||
6450 | fp->type = read_type_die (die, cu); | |
6451 | ||
6452 | new_field->next = fip->typedef_field_list; | |
6453 | fip->typedef_field_list = new_field; | |
6454 | fip->typedef_field_list_count++; | |
6455 | } | |
6456 | ||
c906108c SS |
6457 | /* Create the vector of fields, and attach it to the type. */ |
6458 | ||
6459 | static void | |
fba45db2 | 6460 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6461 | struct dwarf2_cu *cu) |
c906108c SS |
6462 | { |
6463 | int nfields = fip->nfields; | |
6464 | ||
6465 | /* Record the field count, allocate space for the array of fields, | |
6466 | and create blank accessibility bitfields if necessary. */ | |
6467 | TYPE_NFIELDS (type) = nfields; | |
6468 | TYPE_FIELDS (type) = (struct field *) | |
6469 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
6470 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
6471 | ||
b4ba55a1 | 6472 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
6473 | { |
6474 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
6475 | ||
6476 | TYPE_FIELD_PRIVATE_BITS (type) = | |
6477 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6478 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
6479 | ||
6480 | TYPE_FIELD_PROTECTED_BITS (type) = | |
6481 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6482 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
6483 | ||
774b6a14 TT |
6484 | TYPE_FIELD_IGNORE_BITS (type) = |
6485 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6486 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
6487 | } |
6488 | ||
6489 | /* If the type has baseclasses, allocate and clear a bit vector for | |
6490 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 6491 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
6492 | { |
6493 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 6494 | unsigned char *pointer; |
c906108c SS |
6495 | |
6496 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
6497 | pointer = TYPE_ALLOC (type, num_bytes); |
6498 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
6499 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
6500 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
6501 | } | |
6502 | ||
3e43a32a MS |
6503 | /* Copy the saved-up fields into the field vector. Start from the head of |
6504 | the list, adding to the tail of the field array, so that they end up in | |
6505 | the same order in the array in which they were added to the list. */ | |
c906108c SS |
6506 | while (nfields-- > 0) |
6507 | { | |
7d0ccb61 DJ |
6508 | struct nextfield *fieldp; |
6509 | ||
6510 | if (fip->fields) | |
6511 | { | |
6512 | fieldp = fip->fields; | |
6513 | fip->fields = fieldp->next; | |
6514 | } | |
6515 | else | |
6516 | { | |
6517 | fieldp = fip->baseclasses; | |
6518 | fip->baseclasses = fieldp->next; | |
6519 | } | |
6520 | ||
6521 | TYPE_FIELD (type, nfields) = fieldp->field; | |
6522 | switch (fieldp->accessibility) | |
c906108c | 6523 | { |
c5aa993b | 6524 | case DW_ACCESS_private: |
b4ba55a1 JB |
6525 | if (cu->language != language_ada) |
6526 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 6527 | break; |
c906108c | 6528 | |
c5aa993b | 6529 | case DW_ACCESS_protected: |
b4ba55a1 JB |
6530 | if (cu->language != language_ada) |
6531 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 6532 | break; |
c906108c | 6533 | |
c5aa993b JM |
6534 | case DW_ACCESS_public: |
6535 | break; | |
c906108c | 6536 | |
c5aa993b JM |
6537 | default: |
6538 | /* Unknown accessibility. Complain and treat it as public. */ | |
6539 | { | |
e2e0b3e5 | 6540 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 6541 | fieldp->accessibility); |
c5aa993b JM |
6542 | } |
6543 | break; | |
c906108c SS |
6544 | } |
6545 | if (nfields < fip->nbaseclasses) | |
6546 | { | |
7d0ccb61 | 6547 | switch (fieldp->virtuality) |
c906108c | 6548 | { |
c5aa993b JM |
6549 | case DW_VIRTUALITY_virtual: |
6550 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 6551 | if (cu->language == language_ada) |
a73c6dcd | 6552 | error (_("unexpected virtuality in component of Ada type")); |
c5aa993b JM |
6553 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
6554 | break; | |
c906108c SS |
6555 | } |
6556 | } | |
c906108c SS |
6557 | } |
6558 | } | |
6559 | ||
c906108c SS |
6560 | /* Add a member function to the proper fieldlist. */ |
6561 | ||
6562 | static void | |
107d2387 | 6563 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 6564 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 6565 | { |
e7c27a73 | 6566 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6567 | struct attribute *attr; |
6568 | struct fnfieldlist *flp; | |
6569 | int i; | |
6570 | struct fn_field *fnp; | |
6571 | char *fieldname; | |
c906108c | 6572 | struct nextfnfield *new_fnfield; |
f792889a | 6573 | struct type *this_type; |
c906108c | 6574 | |
b4ba55a1 | 6575 | if (cu->language == language_ada) |
a73c6dcd | 6576 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 6577 | |
2df3850c | 6578 | /* Get name of member function. */ |
39cbfefa DJ |
6579 | fieldname = dwarf2_name (die, cu); |
6580 | if (fieldname == NULL) | |
2df3850c | 6581 | return; |
c906108c | 6582 | |
c906108c SS |
6583 | /* Look up member function name in fieldlist. */ |
6584 | for (i = 0; i < fip->nfnfields; i++) | |
6585 | { | |
27bfe10e | 6586 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
6587 | break; |
6588 | } | |
6589 | ||
6590 | /* Create new list element if necessary. */ | |
6591 | if (i < fip->nfnfields) | |
6592 | flp = &fip->fnfieldlists[i]; | |
6593 | else | |
6594 | { | |
6595 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
6596 | { | |
6597 | fip->fnfieldlists = (struct fnfieldlist *) | |
6598 | xrealloc (fip->fnfieldlists, | |
6599 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 6600 | * sizeof (struct fnfieldlist)); |
c906108c | 6601 | if (fip->nfnfields == 0) |
c13c43fd | 6602 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
6603 | } |
6604 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
6605 | flp->name = fieldname; | |
6606 | flp->length = 0; | |
6607 | flp->head = NULL; | |
3da10d80 | 6608 | i = fip->nfnfields++; |
c906108c SS |
6609 | } |
6610 | ||
6611 | /* Create a new member function field and chain it to the field list | |
0963b4bd | 6612 | entry. */ |
c906108c | 6613 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); |
b8c9b27d | 6614 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
6615 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
6616 | new_fnfield->next = flp->head; | |
6617 | flp->head = new_fnfield; | |
6618 | flp->length++; | |
6619 | ||
6620 | /* Fill in the member function field info. */ | |
6621 | fnp = &new_fnfield->fnfield; | |
3da10d80 KS |
6622 | |
6623 | /* Delay processing of the physname until later. */ | |
6624 | if (cu->language == language_cplus || cu->language == language_java) | |
6625 | { | |
6626 | add_to_method_list (type, i, flp->length - 1, fieldname, | |
6627 | die, cu); | |
6628 | } | |
6629 | else | |
6630 | { | |
6631 | char *physname = (char *) dwarf2_physname (fieldname, die, cu); | |
6632 | fnp->physname = physname ? physname : ""; | |
6633 | } | |
6634 | ||
c906108c | 6635 | fnp->type = alloc_type (objfile); |
f792889a DJ |
6636 | this_type = read_type_die (die, cu); |
6637 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 6638 | { |
f792889a | 6639 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 6640 | |
f792889a | 6641 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
6642 | of the method itself (TYPE_CODE_METHOD). */ |
6643 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
6644 | TYPE_TARGET_TYPE (this_type), |
6645 | TYPE_FIELDS (this_type), | |
6646 | TYPE_NFIELDS (this_type), | |
6647 | TYPE_VARARGS (this_type)); | |
c906108c SS |
6648 | |
6649 | /* Handle static member functions. | |
c5aa993b | 6650 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
6651 | member functions. G++ helps GDB by marking the first |
6652 | parameter for non-static member functions (which is the this | |
6653 | pointer) as artificial. We obtain this information from | |
6654 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 6655 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
6656 | fnp->voffset = VOFFSET_STATIC; |
6657 | } | |
6658 | else | |
e2e0b3e5 | 6659 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
3da10d80 | 6660 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
6661 | |
6662 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 6663 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 6664 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 6665 | |
3e43a32a MS |
6666 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
6667 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
6668 | |
6669 | /* Get accessibility. */ | |
e142c38c | 6670 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
6671 | if (attr) |
6672 | { | |
6673 | switch (DW_UNSND (attr)) | |
6674 | { | |
c5aa993b JM |
6675 | case DW_ACCESS_private: |
6676 | fnp->is_private = 1; | |
6677 | break; | |
6678 | case DW_ACCESS_protected: | |
6679 | fnp->is_protected = 1; | |
6680 | break; | |
c906108c SS |
6681 | } |
6682 | } | |
6683 | ||
b02dede2 | 6684 | /* Check for artificial methods. */ |
e142c38c | 6685 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
6686 | if (attr && DW_UNSND (attr) != 0) |
6687 | fnp->is_artificial = 1; | |
6688 | ||
0d564a31 | 6689 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
6690 | function. For older versions of GCC, this is an offset in the |
6691 | appropriate virtual table, as specified by DW_AT_containing_type. | |
6692 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
6693 | to the object address. */ |
6694 | ||
e142c38c | 6695 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 6696 | if (attr) |
8e19ed76 | 6697 | { |
aec5aa8b | 6698 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 6699 | { |
aec5aa8b TT |
6700 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
6701 | { | |
6702 | /* Old-style GCC. */ | |
6703 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
6704 | } | |
6705 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
6706 | || (DW_BLOCK (attr)->size > 1 | |
6707 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
6708 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
6709 | { | |
6710 | struct dwarf_block blk; | |
6711 | int offset; | |
6712 | ||
6713 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
6714 | ? 1 : 2); | |
6715 | blk.size = DW_BLOCK (attr)->size - offset; | |
6716 | blk.data = DW_BLOCK (attr)->data + offset; | |
6717 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
6718 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
6719 | dwarf2_complex_location_expr_complaint (); | |
6720 | else | |
6721 | fnp->voffset /= cu->header.addr_size; | |
6722 | fnp->voffset += 2; | |
6723 | } | |
6724 | else | |
6725 | dwarf2_complex_location_expr_complaint (); | |
6726 | ||
6727 | if (!fnp->fcontext) | |
6728 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
6729 | } | |
3690dd37 | 6730 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 6731 | { |
4d3c2250 | 6732 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
6733 | } |
6734 | else | |
6735 | { | |
4d3c2250 KB |
6736 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
6737 | fieldname); | |
8e19ed76 | 6738 | } |
0d564a31 | 6739 | } |
d48cc9dd DJ |
6740 | else |
6741 | { | |
6742 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
6743 | if (attr && DW_UNSND (attr)) | |
6744 | { | |
6745 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
6746 | complaint (&symfile_complaints, | |
3e43a32a MS |
6747 | _("Member function \"%s\" (offset %d) is virtual " |
6748 | "but the vtable offset is not specified"), | |
d48cc9dd | 6749 | fieldname, die->offset); |
9655fd1a | 6750 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
6751 | TYPE_CPLUS_DYNAMIC (type) = 1; |
6752 | } | |
6753 | } | |
c906108c SS |
6754 | } |
6755 | ||
6756 | /* Create the vector of member function fields, and attach it to the type. */ | |
6757 | ||
6758 | static void | |
fba45db2 | 6759 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6760 | struct dwarf2_cu *cu) |
c906108c SS |
6761 | { |
6762 | struct fnfieldlist *flp; | |
6763 | int total_length = 0; | |
6764 | int i; | |
6765 | ||
b4ba55a1 | 6766 | if (cu->language == language_ada) |
a73c6dcd | 6767 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 6768 | |
c906108c SS |
6769 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
6770 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
6771 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
6772 | ||
6773 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
6774 | { | |
6775 | struct nextfnfield *nfp = flp->head; | |
6776 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
6777 | int k; | |
6778 | ||
6779 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
6780 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
6781 | fn_flp->fn_fields = (struct fn_field *) | |
6782 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
6783 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 6784 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
6785 | |
6786 | total_length += flp->length; | |
6787 | } | |
6788 | ||
6789 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
6790 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
6791 | } | |
6792 | ||
1168df01 JB |
6793 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
6794 | language, zero otherwise. */ | |
6795 | static int | |
6796 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
6797 | { | |
6798 | static const char vptr[] = "_vptr"; | |
987504bb | 6799 | static const char vtable[] = "vtable"; |
1168df01 | 6800 | |
987504bb JJ |
6801 | /* Look for the C++ and Java forms of the vtable. */ |
6802 | if ((cu->language == language_java | |
6803 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
6804 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
6805 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
6806 | return 1; |
6807 | ||
6808 | return 0; | |
6809 | } | |
6810 | ||
c0dd20ea | 6811 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
6812 | functions, with the ABI-specified layout. If TYPE describes |
6813 | such a structure, smash it into a member function type. | |
61049d3b DJ |
6814 | |
6815 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
6816 | This is GCC PR debug/28767. */ | |
c0dd20ea | 6817 | |
0b92b5bb TT |
6818 | static void |
6819 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 6820 | { |
0b92b5bb | 6821 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
6822 | |
6823 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
6824 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
6825 | return; | |
c0dd20ea DJ |
6826 | |
6827 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
6828 | if (TYPE_FIELD_NAME (type, 0) == NULL |
6829 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
6830 | || TYPE_FIELD_NAME (type, 1) == NULL | |
6831 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
6832 | return; | |
c0dd20ea DJ |
6833 | |
6834 | /* Find the type of the method. */ | |
0b92b5bb | 6835 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
6836 | if (pfn_type == NULL |
6837 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
6838 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 6839 | return; |
c0dd20ea DJ |
6840 | |
6841 | /* Look for the "this" argument. */ | |
6842 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
6843 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 6844 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 6845 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 6846 | return; |
c0dd20ea DJ |
6847 | |
6848 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
6849 | new_type = alloc_type (objfile); |
6850 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
6851 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
6852 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 6853 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 6854 | } |
1168df01 | 6855 | |
c906108c | 6856 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
6857 | (definition) to create a type for the structure or union. Fill in |
6858 | the type's name and general properties; the members will not be | |
6859 | processed until process_structure_type. | |
c906108c | 6860 | |
c767944b DJ |
6861 | NOTE: we need to call these functions regardless of whether or not the |
6862 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c SS |
6863 | structure or union. This gets the type entered into our set of |
6864 | user defined types. | |
6865 | ||
6866 | However, if the structure is incomplete (an opaque struct/union) | |
6867 | then suppress creating a symbol table entry for it since gdb only | |
6868 | wants to find the one with the complete definition. Note that if | |
6869 | it is complete, we just call new_symbol, which does it's own | |
6870 | checking about whether the struct/union is anonymous or not (and | |
6871 | suppresses creating a symbol table entry itself). */ | |
6872 | ||
f792889a | 6873 | static struct type * |
134d01f1 | 6874 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6875 | { |
e7c27a73 | 6876 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6877 | struct type *type; |
6878 | struct attribute *attr; | |
39cbfefa | 6879 | char *name; |
c906108c | 6880 | |
348e048f DE |
6881 | /* If the definition of this type lives in .debug_types, read that type. |
6882 | Don't follow DW_AT_specification though, that will take us back up | |
6883 | the chain and we want to go down. */ | |
6884 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
6885 | if (attr) | |
6886 | { | |
6887 | struct dwarf2_cu *type_cu = cu; | |
6888 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 6889 | |
348e048f DE |
6890 | /* We could just recurse on read_structure_type, but we need to call |
6891 | get_die_type to ensure only one type for this DIE is created. | |
6892 | This is important, for example, because for c++ classes we need | |
6893 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
6894 | type = read_type_die (type_die, type_cu); | |
9dc481d3 DE |
6895 | |
6896 | /* TYPE_CU may not be the same as CU. | |
6897 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
6898 | return set_die_type (die, type, cu); |
6899 | } | |
6900 | ||
c0dd20ea | 6901 | type = alloc_type (objfile); |
c906108c | 6902 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 6903 | |
39cbfefa DJ |
6904 | name = dwarf2_name (die, cu); |
6905 | if (name != NULL) | |
c906108c | 6906 | { |
987504bb JJ |
6907 | if (cu->language == language_cplus |
6908 | || cu->language == language_java) | |
63d06c5c | 6909 | { |
3da10d80 KS |
6910 | char *full_name = (char *) dwarf2_full_name (name, die, cu); |
6911 | ||
6912 | /* dwarf2_full_name might have already finished building the DIE's | |
6913 | type. If so, there is no need to continue. */ | |
6914 | if (get_die_type (die, cu) != NULL) | |
6915 | return get_die_type (die, cu); | |
6916 | ||
6917 | TYPE_TAG_NAME (type) = full_name; | |
94af9270 KS |
6918 | if (die->tag == DW_TAG_structure_type |
6919 | || die->tag == DW_TAG_class_type) | |
6920 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
6921 | } |
6922 | else | |
6923 | { | |
d8151005 DJ |
6924 | /* The name is already allocated along with this objfile, so |
6925 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
6926 | TYPE_TAG_NAME (type) = (char *) name; |
6927 | if (die->tag == DW_TAG_class_type) | |
6928 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 6929 | } |
c906108c SS |
6930 | } |
6931 | ||
6932 | if (die->tag == DW_TAG_structure_type) | |
6933 | { | |
6934 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
6935 | } | |
6936 | else if (die->tag == DW_TAG_union_type) | |
6937 | { | |
6938 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
6939 | } | |
6940 | else | |
6941 | { | |
c906108c SS |
6942 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
6943 | } | |
6944 | ||
0cc2414c TT |
6945 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
6946 | TYPE_DECLARED_CLASS (type) = 1; | |
6947 | ||
e142c38c | 6948 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6949 | if (attr) |
6950 | { | |
6951 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
6952 | } | |
6953 | else | |
6954 | { | |
6955 | TYPE_LENGTH (type) = 0; | |
6956 | } | |
6957 | ||
876cecd0 | 6958 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 6959 | if (die_is_declaration (die, cu)) |
876cecd0 | 6960 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
6961 | else if (attr == NULL && die->child == NULL |
6962 | && producer_is_realview (cu->producer)) | |
6963 | /* RealView does not output the required DW_AT_declaration | |
6964 | on incomplete types. */ | |
6965 | TYPE_STUB (type) = 1; | |
dc718098 | 6966 | |
c906108c SS |
6967 | /* We need to add the type field to the die immediately so we don't |
6968 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 6969 | type within the structure itself. */ |
1c379e20 | 6970 | set_die_type (die, type, cu); |
c906108c | 6971 | |
7e314c57 JK |
6972 | /* set_die_type should be already done. */ |
6973 | set_descriptive_type (type, die, cu); | |
6974 | ||
c767944b DJ |
6975 | return type; |
6976 | } | |
6977 | ||
6978 | /* Finish creating a structure or union type, including filling in | |
6979 | its members and creating a symbol for it. */ | |
6980 | ||
6981 | static void | |
6982 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6983 | { | |
6984 | struct objfile *objfile = cu->objfile; | |
6985 | struct die_info *child_die = die->child; | |
6986 | struct type *type; | |
6987 | ||
6988 | type = get_die_type (die, cu); | |
6989 | if (type == NULL) | |
6990 | type = read_structure_type (die, cu); | |
6991 | ||
e142c38c | 6992 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
6993 | { |
6994 | struct field_info fi; | |
6995 | struct die_info *child_die; | |
34eaf542 | 6996 | VEC (symbolp) *template_args = NULL; |
c767944b | 6997 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c SS |
6998 | |
6999 | memset (&fi, 0, sizeof (struct field_info)); | |
7000 | ||
639d11d3 | 7001 | child_die = die->child; |
c906108c SS |
7002 | |
7003 | while (child_die && child_die->tag) | |
7004 | { | |
a9a9bd0f DC |
7005 | if (child_die->tag == DW_TAG_member |
7006 | || child_die->tag == DW_TAG_variable) | |
c906108c | 7007 | { |
a9a9bd0f DC |
7008 | /* NOTE: carlton/2002-11-05: A C++ static data member |
7009 | should be a DW_TAG_member that is a declaration, but | |
7010 | all versions of G++ as of this writing (so through at | |
7011 | least 3.2.1) incorrectly generate DW_TAG_variable | |
7012 | tags for them instead. */ | |
e7c27a73 | 7013 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 7014 | } |
8713b1b1 | 7015 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c | 7016 | { |
0963b4bd | 7017 | /* C++ member function. */ |
e7c27a73 | 7018 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
7019 | } |
7020 | else if (child_die->tag == DW_TAG_inheritance) | |
7021 | { | |
7022 | /* C++ base class field. */ | |
e7c27a73 | 7023 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 7024 | } |
98751a41 JK |
7025 | else if (child_die->tag == DW_TAG_typedef) |
7026 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
7027 | else if (child_die->tag == DW_TAG_template_type_param |
7028 | || child_die->tag == DW_TAG_template_value_param) | |
7029 | { | |
7030 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
7031 | ||
f1078f66 DJ |
7032 | if (arg != NULL) |
7033 | VEC_safe_push (symbolp, template_args, arg); | |
34eaf542 TT |
7034 | } |
7035 | ||
c906108c SS |
7036 | child_die = sibling_die (child_die); |
7037 | } | |
7038 | ||
34eaf542 TT |
7039 | /* Attach template arguments to type. */ |
7040 | if (! VEC_empty (symbolp, template_args)) | |
7041 | { | |
7042 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
7043 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7044 | = VEC_length (symbolp, template_args); | |
7045 | TYPE_TEMPLATE_ARGUMENTS (type) | |
7046 | = obstack_alloc (&objfile->objfile_obstack, | |
7047 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7048 | * sizeof (struct symbol *))); | |
7049 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
7050 | VEC_address (symbolp, template_args), | |
7051 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
7052 | * sizeof (struct symbol *))); | |
7053 | VEC_free (symbolp, template_args); | |
7054 | } | |
7055 | ||
c906108c SS |
7056 | /* Attach fields and member functions to the type. */ |
7057 | if (fi.nfields) | |
e7c27a73 | 7058 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
7059 | if (fi.nfnfields) |
7060 | { | |
e7c27a73 | 7061 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 7062 | |
c5aa993b | 7063 | /* Get the type which refers to the base class (possibly this |
c906108c | 7064 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
7065 | class from the DW_AT_containing_type attribute. This use of |
7066 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 7067 | |
e142c38c | 7068 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 7069 | { |
e7c27a73 | 7070 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
7071 | |
7072 | TYPE_VPTR_BASETYPE (type) = t; | |
7073 | if (type == t) | |
7074 | { | |
c906108c SS |
7075 | int i; |
7076 | ||
7077 | /* Our own class provides vtbl ptr. */ | |
7078 | for (i = TYPE_NFIELDS (t) - 1; | |
7079 | i >= TYPE_N_BASECLASSES (t); | |
7080 | --i) | |
7081 | { | |
7082 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
7083 | ||
1168df01 | 7084 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
7085 | { |
7086 | TYPE_VPTR_FIELDNO (type) = i; | |
7087 | break; | |
7088 | } | |
7089 | } | |
7090 | ||
7091 | /* Complain if virtual function table field not found. */ | |
7092 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 7093 | complaint (&symfile_complaints, |
3e43a32a MS |
7094 | _("virtual function table pointer " |
7095 | "not found when defining class '%s'"), | |
4d3c2250 KB |
7096 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
7097 | ""); | |
c906108c SS |
7098 | } |
7099 | else | |
7100 | { | |
7101 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
7102 | } | |
7103 | } | |
f6235d4c EZ |
7104 | else if (cu->producer |
7105 | && strncmp (cu->producer, | |
7106 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
7107 | { | |
7108 | /* The IBM XLC compiler does not provide direct indication | |
7109 | of the containing type, but the vtable pointer is | |
7110 | always named __vfp. */ | |
7111 | ||
7112 | int i; | |
7113 | ||
7114 | for (i = TYPE_NFIELDS (type) - 1; | |
7115 | i >= TYPE_N_BASECLASSES (type); | |
7116 | --i) | |
7117 | { | |
7118 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
7119 | { | |
7120 | TYPE_VPTR_FIELDNO (type) = i; | |
7121 | TYPE_VPTR_BASETYPE (type) = type; | |
7122 | break; | |
7123 | } | |
7124 | } | |
7125 | } | |
c906108c | 7126 | } |
98751a41 JK |
7127 | |
7128 | /* Copy fi.typedef_field_list linked list elements content into the | |
7129 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
7130 | if (fi.typedef_field_list) | |
7131 | { | |
7132 | int i = fi.typedef_field_list_count; | |
7133 | ||
a0d7a4ff | 7134 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
7135 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
7136 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
7137 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
7138 | ||
7139 | /* Reverse the list order to keep the debug info elements order. */ | |
7140 | while (--i >= 0) | |
7141 | { | |
7142 | struct typedef_field *dest, *src; | |
6e70227d | 7143 | |
98751a41 JK |
7144 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
7145 | src = &fi.typedef_field_list->field; | |
7146 | fi.typedef_field_list = fi.typedef_field_list->next; | |
7147 | *dest = *src; | |
7148 | } | |
7149 | } | |
c767944b DJ |
7150 | |
7151 | do_cleanups (back_to); | |
c906108c | 7152 | } |
63d06c5c | 7153 | |
0b92b5bb TT |
7154 | quirk_gcc_member_function_pointer (type, cu->objfile); |
7155 | ||
90aeadfc DC |
7156 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
7157 | snapshots) has been known to create a die giving a declaration | |
7158 | for a class that has, as a child, a die giving a definition for a | |
7159 | nested class. So we have to process our children even if the | |
7160 | current die is a declaration. Normally, of course, a declaration | |
7161 | won't have any children at all. */ | |
134d01f1 | 7162 | |
90aeadfc DC |
7163 | while (child_die != NULL && child_die->tag) |
7164 | { | |
7165 | if (child_die->tag == DW_TAG_member | |
7166 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
7167 | || child_die->tag == DW_TAG_inheritance |
7168 | || child_die->tag == DW_TAG_template_value_param | |
7169 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 7170 | { |
90aeadfc | 7171 | /* Do nothing. */ |
134d01f1 | 7172 | } |
90aeadfc DC |
7173 | else |
7174 | process_die (child_die, cu); | |
134d01f1 | 7175 | |
90aeadfc | 7176 | child_die = sibling_die (child_die); |
134d01f1 DJ |
7177 | } |
7178 | ||
fa4028e9 JB |
7179 | /* Do not consider external references. According to the DWARF standard, |
7180 | these DIEs are identified by the fact that they have no byte_size | |
7181 | attribute, and a declaration attribute. */ | |
7182 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
7183 | || !die_is_declaration (die, cu)) | |
c767944b | 7184 | new_symbol (die, type, cu); |
134d01f1 DJ |
7185 | } |
7186 | ||
7187 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
7188 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 7189 | |
f792889a | 7190 | static struct type * |
134d01f1 | 7191 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7192 | { |
e7c27a73 | 7193 | struct objfile *objfile = cu->objfile; |
c906108c | 7194 | struct type *type; |
c906108c | 7195 | struct attribute *attr; |
0114d602 | 7196 | const char *name; |
134d01f1 | 7197 | |
348e048f DE |
7198 | /* If the definition of this type lives in .debug_types, read that type. |
7199 | Don't follow DW_AT_specification though, that will take us back up | |
7200 | the chain and we want to go down. */ | |
7201 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
7202 | if (attr) | |
7203 | { | |
7204 | struct dwarf2_cu *type_cu = cu; | |
7205 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 7206 | |
348e048f | 7207 | type = read_type_die (type_die, type_cu); |
9dc481d3 DE |
7208 | |
7209 | /* TYPE_CU may not be the same as CU. | |
7210 | Ensure TYPE is recorded in CU's type_hash table. */ | |
348e048f DE |
7211 | return set_die_type (die, type, cu); |
7212 | } | |
7213 | ||
c906108c SS |
7214 | type = alloc_type (objfile); |
7215 | ||
7216 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 7217 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 7218 | if (name != NULL) |
0114d602 | 7219 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 7220 | |
e142c38c | 7221 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7222 | if (attr) |
7223 | { | |
7224 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7225 | } | |
7226 | else | |
7227 | { | |
7228 | TYPE_LENGTH (type) = 0; | |
7229 | } | |
7230 | ||
137033e9 JB |
7231 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
7232 | declared as private in the package spec, and then defined only | |
7233 | inside the package body. Such types are known as Taft Amendment | |
7234 | Types. When another package uses such a type, an incomplete DIE | |
7235 | may be generated by the compiler. */ | |
02eb380e | 7236 | if (die_is_declaration (die, cu)) |
876cecd0 | 7237 | TYPE_STUB (type) = 1; |
02eb380e | 7238 | |
f792889a | 7239 | return set_die_type (die, type, cu); |
134d01f1 DJ |
7240 | } |
7241 | ||
7242 | /* Given a pointer to a die which begins an enumeration, process all | |
7243 | the dies that define the members of the enumeration, and create the | |
7244 | symbol for the enumeration type. | |
7245 | ||
7246 | NOTE: We reverse the order of the element list. */ | |
7247 | ||
7248 | static void | |
7249 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
7250 | { | |
f792889a | 7251 | struct type *this_type; |
134d01f1 | 7252 | |
f792889a DJ |
7253 | this_type = get_die_type (die, cu); |
7254 | if (this_type == NULL) | |
7255 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 7256 | |
639d11d3 | 7257 | if (die->child != NULL) |
c906108c | 7258 | { |
9dc481d3 DE |
7259 | struct die_info *child_die; |
7260 | struct symbol *sym; | |
7261 | struct field *fields = NULL; | |
7262 | int num_fields = 0; | |
7263 | int unsigned_enum = 1; | |
7264 | char *name; | |
7265 | ||
639d11d3 | 7266 | child_die = die->child; |
c906108c SS |
7267 | while (child_die && child_die->tag) |
7268 | { | |
7269 | if (child_die->tag != DW_TAG_enumerator) | |
7270 | { | |
e7c27a73 | 7271 | process_die (child_die, cu); |
c906108c SS |
7272 | } |
7273 | else | |
7274 | { | |
39cbfefa DJ |
7275 | name = dwarf2_name (child_die, cu); |
7276 | if (name) | |
c906108c | 7277 | { |
f792889a | 7278 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
7279 | if (SYMBOL_VALUE (sym) < 0) |
7280 | unsigned_enum = 0; | |
7281 | ||
7282 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
7283 | { | |
7284 | fields = (struct field *) | |
7285 | xrealloc (fields, | |
7286 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 7287 | * sizeof (struct field)); |
c906108c SS |
7288 | } |
7289 | ||
3567439c | 7290 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 7291 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 7292 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
7293 | FIELD_BITSIZE (fields[num_fields]) = 0; |
7294 | ||
7295 | num_fields++; | |
7296 | } | |
7297 | } | |
7298 | ||
7299 | child_die = sibling_die (child_die); | |
7300 | } | |
7301 | ||
7302 | if (num_fields) | |
7303 | { | |
f792889a DJ |
7304 | TYPE_NFIELDS (this_type) = num_fields; |
7305 | TYPE_FIELDS (this_type) = (struct field *) | |
7306 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
7307 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 7308 | sizeof (struct field) * num_fields); |
b8c9b27d | 7309 | xfree (fields); |
c906108c SS |
7310 | } |
7311 | if (unsigned_enum) | |
876cecd0 | 7312 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 7313 | } |
134d01f1 | 7314 | |
f792889a | 7315 | new_symbol (die, this_type, cu); |
c906108c SS |
7316 | } |
7317 | ||
7318 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
7319 | the DIE's type field. For now, this only handles one dimensional | |
7320 | arrays. */ | |
7321 | ||
f792889a | 7322 | static struct type * |
e7c27a73 | 7323 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7324 | { |
e7c27a73 | 7325 | struct objfile *objfile = cu->objfile; |
c906108c | 7326 | struct die_info *child_die; |
7e314c57 | 7327 | struct type *type; |
c906108c SS |
7328 | struct type *element_type, *range_type, *index_type; |
7329 | struct type **range_types = NULL; | |
7330 | struct attribute *attr; | |
7331 | int ndim = 0; | |
7332 | struct cleanup *back_to; | |
39cbfefa | 7333 | char *name; |
c906108c | 7334 | |
e7c27a73 | 7335 | element_type = die_type (die, cu); |
c906108c | 7336 | |
7e314c57 JK |
7337 | /* The die_type call above may have already set the type for this DIE. */ |
7338 | type = get_die_type (die, cu); | |
7339 | if (type) | |
7340 | return type; | |
7341 | ||
c906108c SS |
7342 | /* Irix 6.2 native cc creates array types without children for |
7343 | arrays with unspecified length. */ | |
639d11d3 | 7344 | if (die->child == NULL) |
c906108c | 7345 | { |
46bf5051 | 7346 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 7347 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
7348 | type = create_array_type (NULL, element_type, range_type); |
7349 | return set_die_type (die, type, cu); | |
c906108c SS |
7350 | } |
7351 | ||
7352 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 7353 | child_die = die->child; |
c906108c SS |
7354 | while (child_die && child_die->tag) |
7355 | { | |
7356 | if (child_die->tag == DW_TAG_subrange_type) | |
7357 | { | |
f792889a | 7358 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 7359 | |
f792889a | 7360 | if (child_type != NULL) |
a02abb62 | 7361 | { |
0963b4bd MS |
7362 | /* The range type was succesfully read. Save it for the |
7363 | array type creation. */ | |
a02abb62 JB |
7364 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) |
7365 | { | |
7366 | range_types = (struct type **) | |
7367 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
7368 | * sizeof (struct type *)); | |
7369 | if (ndim == 0) | |
7370 | make_cleanup (free_current_contents, &range_types); | |
7371 | } | |
f792889a | 7372 | range_types[ndim++] = child_type; |
a02abb62 | 7373 | } |
c906108c SS |
7374 | } |
7375 | child_die = sibling_die (child_die); | |
7376 | } | |
7377 | ||
7378 | /* Dwarf2 dimensions are output from left to right, create the | |
7379 | necessary array types in backwards order. */ | |
7ca2d3a3 | 7380 | |
c906108c | 7381 | type = element_type; |
7ca2d3a3 DL |
7382 | |
7383 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
7384 | { | |
7385 | int i = 0; | |
9a619af0 | 7386 | |
7ca2d3a3 DL |
7387 | while (i < ndim) |
7388 | type = create_array_type (NULL, type, range_types[i++]); | |
7389 | } | |
7390 | else | |
7391 | { | |
7392 | while (ndim-- > 0) | |
7393 | type = create_array_type (NULL, type, range_types[ndim]); | |
7394 | } | |
c906108c | 7395 | |
f5f8a009 EZ |
7396 | /* Understand Dwarf2 support for vector types (like they occur on |
7397 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
7398 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
7399 | custom vendor extension. The main difference between a regular | |
7400 | array and the vector variant is that vectors are passed by value | |
7401 | to functions. */ | |
e142c38c | 7402 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 7403 | if (attr) |
ea37ba09 | 7404 | make_vector_type (type); |
f5f8a009 | 7405 | |
dbc98a8b KW |
7406 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
7407 | implementation may choose to implement triple vectors using this | |
7408 | attribute. */ | |
7409 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
7410 | if (attr) | |
7411 | { | |
7412 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
7413 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7414 | else | |
3e43a32a MS |
7415 | complaint (&symfile_complaints, |
7416 | _("DW_AT_byte_size for array type smaller " | |
7417 | "than the total size of elements")); | |
dbc98a8b KW |
7418 | } |
7419 | ||
39cbfefa DJ |
7420 | name = dwarf2_name (die, cu); |
7421 | if (name) | |
7422 | TYPE_NAME (type) = name; | |
6e70227d | 7423 | |
0963b4bd | 7424 | /* Install the type in the die. */ |
7e314c57 JK |
7425 | set_die_type (die, type, cu); |
7426 | ||
7427 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
7428 | set_descriptive_type (type, die, cu); |
7429 | ||
c906108c SS |
7430 | do_cleanups (back_to); |
7431 | ||
7e314c57 | 7432 | return type; |
c906108c SS |
7433 | } |
7434 | ||
7ca2d3a3 | 7435 | static enum dwarf_array_dim_ordering |
6e70227d | 7436 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
7437 | { |
7438 | struct attribute *attr; | |
7439 | ||
7440 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
7441 | ||
7442 | if (attr) return DW_SND (attr); | |
7443 | ||
0963b4bd MS |
7444 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
7445 | opposite order to the dwarf2 specification, but data is still | |
7446 | laid out as per normal fortran. | |
7ca2d3a3 | 7447 | |
0963b4bd MS |
7448 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
7449 | version checking. */ | |
7ca2d3a3 | 7450 | |
905e0470 PM |
7451 | if (cu->language == language_fortran |
7452 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
7453 | { |
7454 | return DW_ORD_row_major; | |
7455 | } | |
7456 | ||
6e70227d | 7457 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
7458 | { |
7459 | case array_column_major: | |
7460 | return DW_ORD_col_major; | |
7461 | case array_row_major: | |
7462 | default: | |
7463 | return DW_ORD_row_major; | |
7464 | }; | |
7465 | } | |
7466 | ||
72019c9c | 7467 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 7468 | the DIE's type field. */ |
72019c9c | 7469 | |
f792889a | 7470 | static struct type * |
72019c9c GM |
7471 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
7472 | { | |
7e314c57 JK |
7473 | struct type *domain_type, *set_type; |
7474 | struct attribute *attr; | |
f792889a | 7475 | |
7e314c57 JK |
7476 | domain_type = die_type (die, cu); |
7477 | ||
7478 | /* The die_type call above may have already set the type for this DIE. */ | |
7479 | set_type = get_die_type (die, cu); | |
7480 | if (set_type) | |
7481 | return set_type; | |
7482 | ||
7483 | set_type = create_set_type (NULL, domain_type); | |
7484 | ||
7485 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
7486 | if (attr) |
7487 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 7488 | |
f792889a | 7489 | return set_die_type (die, set_type, cu); |
72019c9c | 7490 | } |
7ca2d3a3 | 7491 | |
c906108c SS |
7492 | /* First cut: install each common block member as a global variable. */ |
7493 | ||
7494 | static void | |
e7c27a73 | 7495 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7496 | { |
7497 | struct die_info *child_die; | |
7498 | struct attribute *attr; | |
7499 | struct symbol *sym; | |
7500 | CORE_ADDR base = (CORE_ADDR) 0; | |
7501 | ||
e142c38c | 7502 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7503 | if (attr) |
7504 | { | |
0963b4bd | 7505 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
7506 | if (attr_form_is_block (attr)) |
7507 | { | |
e7c27a73 | 7508 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 7509 | } |
3690dd37 | 7510 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 7511 | { |
4d3c2250 | 7512 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
7513 | } |
7514 | else | |
7515 | { | |
4d3c2250 KB |
7516 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
7517 | "common block member"); | |
8e19ed76 | 7518 | } |
c906108c | 7519 | } |
639d11d3 | 7520 | if (die->child != NULL) |
c906108c | 7521 | { |
639d11d3 | 7522 | child_die = die->child; |
c906108c SS |
7523 | while (child_die && child_die->tag) |
7524 | { | |
e7c27a73 | 7525 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 7526 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
f1078f66 | 7527 | if (sym != NULL && attr != NULL) |
c906108c | 7528 | { |
d4b96c9a JK |
7529 | CORE_ADDR byte_offset = 0; |
7530 | ||
7531 | if (attr_form_is_section_offset (attr)) | |
7532 | dwarf2_complex_location_expr_complaint (); | |
7533 | else if (attr_form_is_constant (attr)) | |
7534 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
7535 | else if (attr_form_is_block (attr)) | |
7536 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
7537 | else | |
7538 | dwarf2_complex_location_expr_complaint (); | |
7539 | ||
7540 | SYMBOL_VALUE_ADDRESS (sym) = base + byte_offset; | |
c906108c SS |
7541 | add_symbol_to_list (sym, &global_symbols); |
7542 | } | |
7543 | child_die = sibling_die (child_die); | |
7544 | } | |
7545 | } | |
7546 | } | |
7547 | ||
0114d602 | 7548 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 7549 | |
0114d602 DJ |
7550 | static struct type * |
7551 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 7552 | { |
e7c27a73 | 7553 | struct objfile *objfile = cu->objfile; |
0114d602 | 7554 | const char *previous_prefix, *name; |
9219021c | 7555 | int is_anonymous; |
0114d602 DJ |
7556 | struct type *type; |
7557 | ||
7558 | /* For extensions, reuse the type of the original namespace. */ | |
7559 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
7560 | { | |
7561 | struct die_info *ext_die; | |
7562 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 7563 | |
0114d602 DJ |
7564 | ext_die = dwarf2_extension (die, &ext_cu); |
7565 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
7566 | |
7567 | /* EXT_CU may not be the same as CU. | |
7568 | Ensure TYPE is recorded in CU's type_hash table. */ | |
0114d602 DJ |
7569 | return set_die_type (die, type, cu); |
7570 | } | |
9219021c | 7571 | |
e142c38c | 7572 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
7573 | |
7574 | /* Now build the name of the current namespace. */ | |
7575 | ||
0114d602 DJ |
7576 | previous_prefix = determine_prefix (die, cu); |
7577 | if (previous_prefix[0] != '\0') | |
7578 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 7579 | previous_prefix, name, 0, cu); |
0114d602 DJ |
7580 | |
7581 | /* Create the type. */ | |
7582 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
7583 | objfile); | |
7584 | TYPE_NAME (type) = (char *) name; | |
7585 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7586 | ||
60531b24 | 7587 | return set_die_type (die, type, cu); |
0114d602 DJ |
7588 | } |
7589 | ||
7590 | /* Read a C++ namespace. */ | |
7591 | ||
7592 | static void | |
7593 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
7594 | { | |
7595 | struct objfile *objfile = cu->objfile; | |
0114d602 | 7596 | int is_anonymous; |
9219021c | 7597 | |
5c4e30ca DC |
7598 | /* Add a symbol associated to this if we haven't seen the namespace |
7599 | before. Also, add a using directive if it's an anonymous | |
7600 | namespace. */ | |
9219021c | 7601 | |
f2f0e013 | 7602 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
7603 | { |
7604 | struct type *type; | |
7605 | ||
0114d602 | 7606 | type = read_type_die (die, cu); |
e7c27a73 | 7607 | new_symbol (die, type, cu); |
5c4e30ca | 7608 | |
e8e80198 | 7609 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 7610 | if (is_anonymous) |
0114d602 DJ |
7611 | { |
7612 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 7613 | |
c0cc3a76 | 7614 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
13387711 | 7615 | NULL, &objfile->objfile_obstack); |
0114d602 | 7616 | } |
5c4e30ca | 7617 | } |
9219021c | 7618 | |
639d11d3 | 7619 | if (die->child != NULL) |
d9fa45fe | 7620 | { |
639d11d3 | 7621 | struct die_info *child_die = die->child; |
6e70227d | 7622 | |
d9fa45fe DC |
7623 | while (child_die && child_die->tag) |
7624 | { | |
e7c27a73 | 7625 | process_die (child_die, cu); |
d9fa45fe DC |
7626 | child_die = sibling_die (child_die); |
7627 | } | |
7628 | } | |
38d518c9 EZ |
7629 | } |
7630 | ||
f55ee35c JK |
7631 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
7632 | imported module. Still we need that type as local Fortran "use ... only" | |
7633 | declaration imports depend on the created type in determine_prefix. */ | |
7634 | ||
7635 | static struct type * | |
7636 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
7637 | { | |
7638 | struct objfile *objfile = cu->objfile; | |
7639 | char *module_name; | |
7640 | struct type *type; | |
7641 | ||
7642 | module_name = dwarf2_name (die, cu); | |
7643 | if (!module_name) | |
3e43a32a MS |
7644 | complaint (&symfile_complaints, |
7645 | _("DW_TAG_module has no name, offset 0x%x"), | |
f55ee35c JK |
7646 | die->offset); |
7647 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); | |
7648 | ||
7649 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
7650 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7651 | ||
7652 | return set_die_type (die, type, cu); | |
7653 | } | |
7654 | ||
5d7cb8df JK |
7655 | /* Read a Fortran module. */ |
7656 | ||
7657 | static void | |
7658 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
7659 | { | |
7660 | struct die_info *child_die = die->child; | |
7661 | ||
5d7cb8df JK |
7662 | while (child_die && child_die->tag) |
7663 | { | |
7664 | process_die (child_die, cu); | |
7665 | child_die = sibling_die (child_die); | |
7666 | } | |
7667 | } | |
7668 | ||
38d518c9 EZ |
7669 | /* Return the name of the namespace represented by DIE. Set |
7670 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
7671 | namespace. */ | |
7672 | ||
7673 | static const char * | |
e142c38c | 7674 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
7675 | { |
7676 | struct die_info *current_die; | |
7677 | const char *name = NULL; | |
7678 | ||
7679 | /* Loop through the extensions until we find a name. */ | |
7680 | ||
7681 | for (current_die = die; | |
7682 | current_die != NULL; | |
f2f0e013 | 7683 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 7684 | { |
e142c38c | 7685 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
7686 | if (name != NULL) |
7687 | break; | |
7688 | } | |
7689 | ||
7690 | /* Is it an anonymous namespace? */ | |
7691 | ||
7692 | *is_anonymous = (name == NULL); | |
7693 | if (*is_anonymous) | |
7694 | name = "(anonymous namespace)"; | |
7695 | ||
7696 | return name; | |
d9fa45fe DC |
7697 | } |
7698 | ||
c906108c SS |
7699 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
7700 | the user defined type vector. */ | |
7701 | ||
f792889a | 7702 | static struct type * |
e7c27a73 | 7703 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7704 | { |
5e2b427d | 7705 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 7706 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 7707 | struct type *type; |
8b2dbe47 KB |
7708 | struct attribute *attr_byte_size; |
7709 | struct attribute *attr_address_class; | |
7710 | int byte_size, addr_class; | |
7e314c57 JK |
7711 | struct type *target_type; |
7712 | ||
7713 | target_type = die_type (die, cu); | |
c906108c | 7714 | |
7e314c57 JK |
7715 | /* The die_type call above may have already set the type for this DIE. */ |
7716 | type = get_die_type (die, cu); | |
7717 | if (type) | |
7718 | return type; | |
7719 | ||
7720 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 7721 | |
e142c38c | 7722 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
7723 | if (attr_byte_size) |
7724 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 7725 | else |
8b2dbe47 KB |
7726 | byte_size = cu_header->addr_size; |
7727 | ||
e142c38c | 7728 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
7729 | if (attr_address_class) |
7730 | addr_class = DW_UNSND (attr_address_class); | |
7731 | else | |
7732 | addr_class = DW_ADDR_none; | |
7733 | ||
7734 | /* If the pointer size or address class is different than the | |
7735 | default, create a type variant marked as such and set the | |
7736 | length accordingly. */ | |
7737 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 7738 | { |
5e2b427d | 7739 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
7740 | { |
7741 | int type_flags; | |
7742 | ||
849957d9 | 7743 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 7744 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
7745 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
7746 | == 0); | |
8b2dbe47 KB |
7747 | type = make_type_with_address_space (type, type_flags); |
7748 | } | |
7749 | else if (TYPE_LENGTH (type) != byte_size) | |
7750 | { | |
3e43a32a MS |
7751 | complaint (&symfile_complaints, |
7752 | _("invalid pointer size %d"), byte_size); | |
8b2dbe47 | 7753 | } |
6e70227d | 7754 | else |
9a619af0 MS |
7755 | { |
7756 | /* Should we also complain about unhandled address classes? */ | |
7757 | } | |
c906108c | 7758 | } |
8b2dbe47 KB |
7759 | |
7760 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 7761 | return set_die_type (die, type, cu); |
c906108c SS |
7762 | } |
7763 | ||
7764 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
7765 | the user defined type vector. */ | |
7766 | ||
f792889a | 7767 | static struct type * |
e7c27a73 | 7768 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7769 | { |
7770 | struct type *type; | |
7771 | struct type *to_type; | |
7772 | struct type *domain; | |
7773 | ||
e7c27a73 DJ |
7774 | to_type = die_type (die, cu); |
7775 | domain = die_containing_type (die, cu); | |
0d5de010 | 7776 | |
7e314c57 JK |
7777 | /* The calls above may have already set the type for this DIE. */ |
7778 | type = get_die_type (die, cu); | |
7779 | if (type) | |
7780 | return type; | |
7781 | ||
0d5de010 DJ |
7782 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
7783 | type = lookup_methodptr_type (to_type); | |
7784 | else | |
7785 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 7786 | |
f792889a | 7787 | return set_die_type (die, type, cu); |
c906108c SS |
7788 | } |
7789 | ||
7790 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
7791 | the user defined type vector. */ | |
7792 | ||
f792889a | 7793 | static struct type * |
e7c27a73 | 7794 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7795 | { |
e7c27a73 | 7796 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 7797 | struct type *type, *target_type; |
c906108c SS |
7798 | struct attribute *attr; |
7799 | ||
7e314c57 JK |
7800 | target_type = die_type (die, cu); |
7801 | ||
7802 | /* The die_type call above may have already set the type for this DIE. */ | |
7803 | type = get_die_type (die, cu); | |
7804 | if (type) | |
7805 | return type; | |
7806 | ||
7807 | type = lookup_reference_type (target_type); | |
e142c38c | 7808 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7809 | if (attr) |
7810 | { | |
7811 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7812 | } | |
7813 | else | |
7814 | { | |
107d2387 | 7815 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 7816 | } |
f792889a | 7817 | return set_die_type (die, type, cu); |
c906108c SS |
7818 | } |
7819 | ||
f792889a | 7820 | static struct type * |
e7c27a73 | 7821 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7822 | { |
f792889a | 7823 | struct type *base_type, *cv_type; |
c906108c | 7824 | |
e7c27a73 | 7825 | base_type = die_type (die, cu); |
7e314c57 JK |
7826 | |
7827 | /* The die_type call above may have already set the type for this DIE. */ | |
7828 | cv_type = get_die_type (die, cu); | |
7829 | if (cv_type) | |
7830 | return cv_type; | |
7831 | ||
2f608a3a KW |
7832 | /* In case the const qualifier is applied to an array type, the element type |
7833 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
7834 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
7835 | { | |
7836 | struct type *el_type, *inner_array; | |
7837 | ||
7838 | base_type = copy_type (base_type); | |
7839 | inner_array = base_type; | |
7840 | ||
7841 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
7842 | { | |
7843 | TYPE_TARGET_TYPE (inner_array) = | |
7844 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
7845 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
7846 | } | |
7847 | ||
7848 | el_type = TYPE_TARGET_TYPE (inner_array); | |
7849 | TYPE_TARGET_TYPE (inner_array) = | |
7850 | make_cv_type (1, TYPE_VOLATILE (el_type), el_type, NULL); | |
7851 | ||
7852 | return set_die_type (die, base_type, cu); | |
7853 | } | |
7854 | ||
f792889a DJ |
7855 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
7856 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7857 | } |
7858 | ||
f792889a | 7859 | static struct type * |
e7c27a73 | 7860 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7861 | { |
f792889a | 7862 | struct type *base_type, *cv_type; |
c906108c | 7863 | |
e7c27a73 | 7864 | base_type = die_type (die, cu); |
7e314c57 JK |
7865 | |
7866 | /* The die_type call above may have already set the type for this DIE. */ | |
7867 | cv_type = get_die_type (die, cu); | |
7868 | if (cv_type) | |
7869 | return cv_type; | |
7870 | ||
f792889a DJ |
7871 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
7872 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7873 | } |
7874 | ||
7875 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
7876 | the user defined type vector. It isn't really a user defined type, | |
7877 | but it behaves like one, with other DIE's using an AT_user_def_type | |
7878 | attribute to reference it. */ | |
7879 | ||
f792889a | 7880 | static struct type * |
e7c27a73 | 7881 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7882 | { |
e7c27a73 | 7883 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 7884 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
7885 | struct type *type, *range_type, *index_type, *char_type; |
7886 | struct attribute *attr; | |
7887 | unsigned int length; | |
7888 | ||
e142c38c | 7889 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
7890 | if (attr) |
7891 | { | |
7892 | length = DW_UNSND (attr); | |
7893 | } | |
7894 | else | |
7895 | { | |
0963b4bd | 7896 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 7897 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
7898 | if (attr) |
7899 | { | |
7900 | length = DW_UNSND (attr); | |
7901 | } | |
7902 | else | |
7903 | { | |
7904 | length = 1; | |
7905 | } | |
c906108c | 7906 | } |
6ccb9162 | 7907 | |
46bf5051 | 7908 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 7909 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
7910 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
7911 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 7912 | |
f792889a | 7913 | return set_die_type (die, type, cu); |
c906108c SS |
7914 | } |
7915 | ||
7916 | /* Handle DIES due to C code like: | |
7917 | ||
7918 | struct foo | |
c5aa993b JM |
7919 | { |
7920 | int (*funcp)(int a, long l); | |
7921 | int b; | |
7922 | }; | |
c906108c | 7923 | |
0963b4bd | 7924 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 7925 | |
f792889a | 7926 | static struct type * |
e7c27a73 | 7927 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7928 | { |
0963b4bd MS |
7929 | struct type *type; /* Type that this function returns. */ |
7930 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
7931 | struct attribute *attr; |
7932 | ||
e7c27a73 | 7933 | type = die_type (die, cu); |
7e314c57 JK |
7934 | |
7935 | /* The die_type call above may have already set the type for this DIE. */ | |
7936 | ftype = get_die_type (die, cu); | |
7937 | if (ftype) | |
7938 | return ftype; | |
7939 | ||
0c8b41f1 | 7940 | ftype = lookup_function_type (type); |
c906108c | 7941 | |
5b8101ae | 7942 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 7943 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 7944 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 7945 | || cu->language == language_cplus |
5b8101ae PM |
7946 | || cu->language == language_java |
7947 | || cu->language == language_pascal) | |
876cecd0 | 7948 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
7949 | else if (producer_is_realview (cu->producer)) |
7950 | /* RealView does not emit DW_AT_prototyped. We can not | |
7951 | distinguish prototyped and unprototyped functions; default to | |
7952 | prototyped, since that is more common in modern code (and | |
7953 | RealView warns about unprototyped functions). */ | |
7954 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 7955 | |
c055b101 CV |
7956 | /* Store the calling convention in the type if it's available in |
7957 | the subroutine die. Otherwise set the calling convention to | |
7958 | the default value DW_CC_normal. */ | |
7959 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
7960 | if (attr) |
7961 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
7962 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
7963 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
7964 | else | |
7965 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 GM |
7966 | |
7967 | /* We need to add the subroutine type to the die immediately so | |
7968 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 7969 | declared as the same subroutine type. */ |
76c10ea2 | 7970 | set_die_type (die, ftype, cu); |
6e70227d | 7971 | |
639d11d3 | 7972 | if (die->child != NULL) |
c906108c | 7973 | { |
8072405b | 7974 | struct type *void_type = objfile_type (cu->objfile)->builtin_void; |
c906108c | 7975 | struct die_info *child_die; |
8072405b | 7976 | int nparams, iparams; |
c906108c SS |
7977 | |
7978 | /* Count the number of parameters. | |
7979 | FIXME: GDB currently ignores vararg functions, but knows about | |
7980 | vararg member functions. */ | |
8072405b | 7981 | nparams = 0; |
639d11d3 | 7982 | child_die = die->child; |
c906108c SS |
7983 | while (child_die && child_die->tag) |
7984 | { | |
7985 | if (child_die->tag == DW_TAG_formal_parameter) | |
7986 | nparams++; | |
7987 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 7988 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
7989 | child_die = sibling_die (child_die); |
7990 | } | |
7991 | ||
7992 | /* Allocate storage for parameters and fill them in. */ | |
7993 | TYPE_NFIELDS (ftype) = nparams; | |
7994 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 7995 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 7996 | |
8072405b JK |
7997 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
7998 | even if we error out during the parameters reading below. */ | |
7999 | for (iparams = 0; iparams < nparams; iparams++) | |
8000 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
8001 | ||
8002 | iparams = 0; | |
639d11d3 | 8003 | child_die = die->child; |
c906108c SS |
8004 | while (child_die && child_die->tag) |
8005 | { | |
8006 | if (child_die->tag == DW_TAG_formal_parameter) | |
8007 | { | |
3ce3b1ba PA |
8008 | struct type *arg_type; |
8009 | ||
8010 | /* DWARF version 2 has no clean way to discern C++ | |
8011 | static and non-static member functions. G++ helps | |
8012 | GDB by marking the first parameter for non-static | |
8013 | member functions (which is the this pointer) as | |
8014 | artificial. We pass this information to | |
8015 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
8016 | ||
8017 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
8018 | 4.5 does not yet generate. */ | |
e142c38c | 8019 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
8020 | if (attr) |
8021 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
8022 | else | |
418835cc KS |
8023 | { |
8024 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
8025 | ||
8026 | /* GCC/43521: In java, the formal parameter | |
8027 | "this" is sometimes not marked with DW_AT_artificial. */ | |
8028 | if (cu->language == language_java) | |
8029 | { | |
8030 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 8031 | |
418835cc KS |
8032 | if (name && !strcmp (name, "this")) |
8033 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
8034 | } | |
8035 | } | |
3ce3b1ba PA |
8036 | arg_type = die_type (child_die, cu); |
8037 | ||
8038 | /* RealView does not mark THIS as const, which the testsuite | |
8039 | expects. GCC marks THIS as const in method definitions, | |
8040 | but not in the class specifications (GCC PR 43053). */ | |
8041 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
8042 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
8043 | { | |
8044 | int is_this = 0; | |
8045 | struct dwarf2_cu *arg_cu = cu; | |
8046 | const char *name = dwarf2_name (child_die, cu); | |
8047 | ||
8048 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
8049 | if (attr) | |
8050 | { | |
8051 | /* If the compiler emits this, use it. */ | |
8052 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
8053 | is_this = 1; | |
8054 | } | |
8055 | else if (name && strcmp (name, "this") == 0) | |
8056 | /* Function definitions will have the argument names. */ | |
8057 | is_this = 1; | |
8058 | else if (name == NULL && iparams == 0) | |
8059 | /* Declarations may not have the names, so like | |
8060 | elsewhere in GDB, assume an artificial first | |
8061 | argument is "this". */ | |
8062 | is_this = 1; | |
8063 | ||
8064 | if (is_this) | |
8065 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
8066 | arg_type, 0); | |
8067 | } | |
8068 | ||
8069 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
8070 | iparams++; |
8071 | } | |
8072 | child_die = sibling_die (child_die); | |
8073 | } | |
8074 | } | |
8075 | ||
76c10ea2 | 8076 | return ftype; |
c906108c SS |
8077 | } |
8078 | ||
f792889a | 8079 | static struct type * |
e7c27a73 | 8080 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8081 | { |
e7c27a73 | 8082 | struct objfile *objfile = cu->objfile; |
0114d602 | 8083 | const char *name = NULL; |
f792889a | 8084 | struct type *this_type; |
c906108c | 8085 | |
94af9270 | 8086 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 8087 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
8088 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
8089 | TYPE_NAME (this_type) = (char *) name; | |
f792889a DJ |
8090 | set_die_type (die, this_type, cu); |
8091 | TYPE_TARGET_TYPE (this_type) = die_type (die, cu); | |
8092 | return this_type; | |
c906108c SS |
8093 | } |
8094 | ||
8095 | /* Find a representation of a given base type and install | |
8096 | it in the TYPE field of the die. */ | |
8097 | ||
f792889a | 8098 | static struct type * |
e7c27a73 | 8099 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8100 | { |
e7c27a73 | 8101 | struct objfile *objfile = cu->objfile; |
c906108c SS |
8102 | struct type *type; |
8103 | struct attribute *attr; | |
8104 | int encoding = 0, size = 0; | |
39cbfefa | 8105 | char *name; |
6ccb9162 UW |
8106 | enum type_code code = TYPE_CODE_INT; |
8107 | int type_flags = 0; | |
8108 | struct type *target_type = NULL; | |
c906108c | 8109 | |
e142c38c | 8110 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
8111 | if (attr) |
8112 | { | |
8113 | encoding = DW_UNSND (attr); | |
8114 | } | |
e142c38c | 8115 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
8116 | if (attr) |
8117 | { | |
8118 | size = DW_UNSND (attr); | |
8119 | } | |
39cbfefa | 8120 | name = dwarf2_name (die, cu); |
6ccb9162 | 8121 | if (!name) |
c906108c | 8122 | { |
6ccb9162 UW |
8123 | complaint (&symfile_complaints, |
8124 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 8125 | } |
6ccb9162 UW |
8126 | |
8127 | switch (encoding) | |
c906108c | 8128 | { |
6ccb9162 UW |
8129 | case DW_ATE_address: |
8130 | /* Turn DW_ATE_address into a void * pointer. */ | |
8131 | code = TYPE_CODE_PTR; | |
8132 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8133 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
8134 | break; | |
8135 | case DW_ATE_boolean: | |
8136 | code = TYPE_CODE_BOOL; | |
8137 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8138 | break; | |
8139 | case DW_ATE_complex_float: | |
8140 | code = TYPE_CODE_COMPLEX; | |
8141 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
8142 | break; | |
8143 | case DW_ATE_decimal_float: | |
8144 | code = TYPE_CODE_DECFLOAT; | |
8145 | break; | |
8146 | case DW_ATE_float: | |
8147 | code = TYPE_CODE_FLT; | |
8148 | break; | |
8149 | case DW_ATE_signed: | |
8150 | break; | |
8151 | case DW_ATE_unsigned: | |
8152 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8153 | break; | |
8154 | case DW_ATE_signed_char: | |
6e70227d | 8155 | if (cu->language == language_ada || cu->language == language_m2 |
868a0084 | 8156 | || cu->language == language_pascal) |
6ccb9162 UW |
8157 | code = TYPE_CODE_CHAR; |
8158 | break; | |
8159 | case DW_ATE_unsigned_char: | |
868a0084 PM |
8160 | if (cu->language == language_ada || cu->language == language_m2 |
8161 | || cu->language == language_pascal) | |
6ccb9162 UW |
8162 | code = TYPE_CODE_CHAR; |
8163 | type_flags |= TYPE_FLAG_UNSIGNED; | |
8164 | break; | |
75079b2b TT |
8165 | case DW_ATE_UTF: |
8166 | /* We just treat this as an integer and then recognize the | |
8167 | type by name elsewhere. */ | |
8168 | break; | |
8169 | ||
6ccb9162 UW |
8170 | default: |
8171 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
8172 | dwarf_type_encoding_name (encoding)); | |
8173 | break; | |
c906108c | 8174 | } |
6ccb9162 | 8175 | |
0114d602 DJ |
8176 | type = init_type (code, size, type_flags, NULL, objfile); |
8177 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
8178 | TYPE_TARGET_TYPE (type) = target_type; |
8179 | ||
0114d602 | 8180 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 8181 | TYPE_NOSIGN (type) = 1; |
0114d602 | 8182 | |
f792889a | 8183 | return set_die_type (die, type, cu); |
c906108c SS |
8184 | } |
8185 | ||
a02abb62 JB |
8186 | /* Read the given DW_AT_subrange DIE. */ |
8187 | ||
f792889a | 8188 | static struct type * |
a02abb62 JB |
8189 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
8190 | { | |
8191 | struct type *base_type; | |
8192 | struct type *range_type; | |
8193 | struct attribute *attr; | |
43bbcdc2 PH |
8194 | LONGEST low = 0; |
8195 | LONGEST high = -1; | |
39cbfefa | 8196 | char *name; |
43bbcdc2 | 8197 | LONGEST negative_mask; |
e77813c8 | 8198 | |
a02abb62 | 8199 | base_type = die_type (die, cu); |
953ac07e JK |
8200 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
8201 | check_typedef (base_type); | |
a02abb62 | 8202 | |
7e314c57 JK |
8203 | /* The die_type call above may have already set the type for this DIE. */ |
8204 | range_type = get_die_type (die, cu); | |
8205 | if (range_type) | |
8206 | return range_type; | |
8207 | ||
e142c38c | 8208 | if (cu->language == language_fortran) |
6e70227d | 8209 | { |
a02abb62 JB |
8210 | /* FORTRAN implies a lower bound of 1, if not given. */ |
8211 | low = 1; | |
8212 | } | |
8213 | ||
dd5e6932 DJ |
8214 | /* FIXME: For variable sized arrays either of these could be |
8215 | a variable rather than a constant value. We'll allow it, | |
8216 | but we don't know how to handle it. */ | |
e142c38c | 8217 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
8218 | if (attr) |
8219 | low = dwarf2_get_attr_constant_value (attr, 0); | |
8220 | ||
e142c38c | 8221 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 8222 | if (attr) |
6e70227d | 8223 | { |
e77813c8 | 8224 | if (attr->form == DW_FORM_block1 || is_ref_attr (attr)) |
a02abb62 JB |
8225 | { |
8226 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 8227 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
8228 | FIXME: GDB does not yet know how to handle dynamic |
8229 | arrays properly, treat them as arrays with unspecified | |
8230 | length for now. | |
8231 | ||
8232 | FIXME: jimb/2003-09-22: GDB does not really know | |
8233 | how to handle arrays of unspecified length | |
8234 | either; we just represent them as zero-length | |
8235 | arrays. Choose an appropriate upper bound given | |
8236 | the lower bound we've computed above. */ | |
8237 | high = low - 1; | |
8238 | } | |
8239 | else | |
8240 | high = dwarf2_get_attr_constant_value (attr, 1); | |
8241 | } | |
e77813c8 PM |
8242 | else |
8243 | { | |
8244 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
8245 | if (attr) | |
8246 | { | |
8247 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
8248 | high = low + count - 1; | |
8249 | } | |
c2ff108b JK |
8250 | else |
8251 | { | |
8252 | /* Unspecified array length. */ | |
8253 | high = low - 1; | |
8254 | } | |
e77813c8 PM |
8255 | } |
8256 | ||
8257 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
8258 | without specifying a base type. | |
8259 | In that case, the base type must be set to the type of | |
8260 | the lower bound, upper bound or count, in that order, if any of these | |
8261 | three attributes references an object that has a type. | |
8262 | If no base type is found, the Dwarf-2 specifications say that | |
8263 | a signed integer type of size equal to the size of an address should | |
8264 | be used. | |
8265 | For the following C code: `extern char gdb_int [];' | |
8266 | GCC produces an empty range DIE. | |
8267 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 8268 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
8269 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
8270 | { | |
8271 | struct objfile *objfile = cu->objfile; | |
8272 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
8273 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
8274 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
8275 | ||
8276 | /* Test "int", "long int", and "long long int" objfile types, | |
8277 | and select the first one having a size above or equal to the | |
8278 | architecture address size. */ | |
8279 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8280 | base_type = int_type; | |
8281 | else | |
8282 | { | |
8283 | int_type = objfile_type (objfile)->builtin_long; | |
8284 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8285 | base_type = int_type; | |
8286 | else | |
8287 | { | |
8288 | int_type = objfile_type (objfile)->builtin_long_long; | |
8289 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
8290 | base_type = int_type; | |
8291 | } | |
8292 | } | |
8293 | } | |
a02abb62 | 8294 | |
6e70227d | 8295 | negative_mask = |
43bbcdc2 PH |
8296 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
8297 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
8298 | low |= negative_mask; | |
8299 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
8300 | high |= negative_mask; | |
8301 | ||
a02abb62 JB |
8302 | range_type = create_range_type (NULL, base_type, low, high); |
8303 | ||
bbb0eef6 JK |
8304 | /* Mark arrays with dynamic length at least as an array of unspecified |
8305 | length. GDB could check the boundary but before it gets implemented at | |
8306 | least allow accessing the array elements. */ | |
8307 | if (attr && attr->form == DW_FORM_block1) | |
8308 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
8309 | ||
c2ff108b JK |
8310 | /* Ada expects an empty array on no boundary attributes. */ |
8311 | if (attr == NULL && cu->language != language_ada) | |
8312 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
8313 | ||
39cbfefa DJ |
8314 | name = dwarf2_name (die, cu); |
8315 | if (name) | |
8316 | TYPE_NAME (range_type) = name; | |
6e70227d | 8317 | |
e142c38c | 8318 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
8319 | if (attr) |
8320 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
8321 | ||
7e314c57 JK |
8322 | set_die_type (die, range_type, cu); |
8323 | ||
8324 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
8325 | set_descriptive_type (range_type, die, cu); |
8326 | ||
7e314c57 | 8327 | return range_type; |
a02abb62 | 8328 | } |
6e70227d | 8329 | |
f792889a | 8330 | static struct type * |
81a17f79 JB |
8331 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
8332 | { | |
8333 | struct type *type; | |
81a17f79 | 8334 | |
81a17f79 JB |
8335 | /* For now, we only support the C meaning of an unspecified type: void. */ |
8336 | ||
0114d602 DJ |
8337 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
8338 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 8339 | |
f792889a | 8340 | return set_die_type (die, type, cu); |
81a17f79 | 8341 | } |
a02abb62 | 8342 | |
51545339 DJ |
8343 | /* Trivial hash function for die_info: the hash value of a DIE |
8344 | is its offset in .debug_info for this objfile. */ | |
8345 | ||
8346 | static hashval_t | |
8347 | die_hash (const void *item) | |
8348 | { | |
8349 | const struct die_info *die = item; | |
9a619af0 | 8350 | |
51545339 DJ |
8351 | return die->offset; |
8352 | } | |
8353 | ||
8354 | /* Trivial comparison function for die_info structures: two DIEs | |
8355 | are equal if they have the same offset. */ | |
8356 | ||
8357 | static int | |
8358 | die_eq (const void *item_lhs, const void *item_rhs) | |
8359 | { | |
8360 | const struct die_info *die_lhs = item_lhs; | |
8361 | const struct die_info *die_rhs = item_rhs; | |
9a619af0 | 8362 | |
51545339 DJ |
8363 | return die_lhs->offset == die_rhs->offset; |
8364 | } | |
8365 | ||
c906108c SS |
8366 | /* Read a whole compilation unit into a linked list of dies. */ |
8367 | ||
f9aca02d | 8368 | static struct die_info * |
93311388 | 8369 | read_comp_unit (gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 8370 | { |
93311388 | 8371 | struct die_reader_specs reader_specs; |
98bfdba5 | 8372 | int read_abbrevs = 0; |
1d9ec526 | 8373 | struct cleanup *back_to = NULL; |
98bfdba5 PA |
8374 | struct die_info *die; |
8375 | ||
8376 | if (cu->dwarf2_abbrevs == NULL) | |
8377 | { | |
8378 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
8379 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
8380 | read_abbrevs = 1; | |
8381 | } | |
93311388 | 8382 | |
348e048f | 8383 | gdb_assert (cu->die_hash == NULL); |
51545339 DJ |
8384 | cu->die_hash |
8385 | = htab_create_alloc_ex (cu->header.length / 12, | |
8386 | die_hash, | |
8387 | die_eq, | |
8388 | NULL, | |
8389 | &cu->comp_unit_obstack, | |
8390 | hashtab_obstack_allocate, | |
8391 | dummy_obstack_deallocate); | |
8392 | ||
93311388 DE |
8393 | init_cu_die_reader (&reader_specs, cu); |
8394 | ||
98bfdba5 PA |
8395 | die = read_die_and_children (&reader_specs, info_ptr, &info_ptr, NULL); |
8396 | ||
8397 | if (read_abbrevs) | |
8398 | do_cleanups (back_to); | |
8399 | ||
8400 | return die; | |
639d11d3 DC |
8401 | } |
8402 | ||
d97bc12b DE |
8403 | /* Main entry point for reading a DIE and all children. |
8404 | Read the DIE and dump it if requested. */ | |
8405 | ||
8406 | static struct die_info * | |
93311388 DE |
8407 | read_die_and_children (const struct die_reader_specs *reader, |
8408 | gdb_byte *info_ptr, | |
d97bc12b DE |
8409 | gdb_byte **new_info_ptr, |
8410 | struct die_info *parent) | |
8411 | { | |
93311388 | 8412 | struct die_info *result = read_die_and_children_1 (reader, info_ptr, |
d97bc12b DE |
8413 | new_info_ptr, parent); |
8414 | ||
8415 | if (dwarf2_die_debug) | |
8416 | { | |
348e048f DE |
8417 | fprintf_unfiltered (gdb_stdlog, |
8418 | "\nRead die from %s of %s:\n", | |
8419 | reader->buffer == dwarf2_per_objfile->info.buffer | |
8420 | ? ".debug_info" | |
8421 | : reader->buffer == dwarf2_per_objfile->types.buffer | |
8422 | ? ".debug_types" | |
8423 | : "unknown section", | |
8424 | reader->abfd->filename); | |
d97bc12b DE |
8425 | dump_die (result, dwarf2_die_debug); |
8426 | } | |
8427 | ||
8428 | return result; | |
8429 | } | |
8430 | ||
639d11d3 DC |
8431 | /* Read a single die and all its descendents. Set the die's sibling |
8432 | field to NULL; set other fields in the die correctly, and set all | |
8433 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
8434 | location of the info_ptr after reading all of those dies. PARENT | |
8435 | is the parent of the die in question. */ | |
8436 | ||
8437 | static struct die_info * | |
93311388 DE |
8438 | read_die_and_children_1 (const struct die_reader_specs *reader, |
8439 | gdb_byte *info_ptr, | |
d97bc12b DE |
8440 | gdb_byte **new_info_ptr, |
8441 | struct die_info *parent) | |
639d11d3 DC |
8442 | { |
8443 | struct die_info *die; | |
fe1b8b76 | 8444 | gdb_byte *cur_ptr; |
639d11d3 DC |
8445 | int has_children; |
8446 | ||
93311388 | 8447 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
8448 | if (die == NULL) |
8449 | { | |
8450 | *new_info_ptr = cur_ptr; | |
8451 | return NULL; | |
8452 | } | |
93311388 | 8453 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
8454 | |
8455 | if (has_children) | |
348e048f | 8456 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
8457 | else |
8458 | { | |
8459 | die->child = NULL; | |
8460 | *new_info_ptr = cur_ptr; | |
8461 | } | |
8462 | ||
8463 | die->sibling = NULL; | |
8464 | die->parent = parent; | |
8465 | return die; | |
8466 | } | |
8467 | ||
8468 | /* Read a die, all of its descendents, and all of its siblings; set | |
8469 | all of the fields of all of the dies correctly. Arguments are as | |
8470 | in read_die_and_children. */ | |
8471 | ||
8472 | static struct die_info * | |
93311388 DE |
8473 | read_die_and_siblings (const struct die_reader_specs *reader, |
8474 | gdb_byte *info_ptr, | |
fe1b8b76 | 8475 | gdb_byte **new_info_ptr, |
639d11d3 DC |
8476 | struct die_info *parent) |
8477 | { | |
8478 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 8479 | gdb_byte *cur_ptr; |
639d11d3 | 8480 | |
c906108c | 8481 | cur_ptr = info_ptr; |
639d11d3 DC |
8482 | first_die = last_sibling = NULL; |
8483 | ||
8484 | while (1) | |
c906108c | 8485 | { |
639d11d3 | 8486 | struct die_info *die |
93311388 | 8487 | = read_die_and_children_1 (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 8488 | |
1d325ec1 | 8489 | if (die == NULL) |
c906108c | 8490 | { |
639d11d3 DC |
8491 | *new_info_ptr = cur_ptr; |
8492 | return first_die; | |
c906108c | 8493 | } |
1d325ec1 DJ |
8494 | |
8495 | if (!first_die) | |
8496 | first_die = die; | |
c906108c | 8497 | else |
1d325ec1 DJ |
8498 | last_sibling->sibling = die; |
8499 | ||
8500 | last_sibling = die; | |
c906108c | 8501 | } |
c906108c SS |
8502 | } |
8503 | ||
93311388 DE |
8504 | /* Read the die from the .debug_info section buffer. Set DIEP to |
8505 | point to a newly allocated die with its information, except for its | |
8506 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
8507 | whether the die has children or not. */ | |
8508 | ||
8509 | static gdb_byte * | |
8510 | read_full_die (const struct die_reader_specs *reader, | |
8511 | struct die_info **diep, gdb_byte *info_ptr, | |
8512 | int *has_children) | |
8513 | { | |
8514 | unsigned int abbrev_number, bytes_read, i, offset; | |
8515 | struct abbrev_info *abbrev; | |
8516 | struct die_info *die; | |
8517 | struct dwarf2_cu *cu = reader->cu; | |
8518 | bfd *abfd = reader->abfd; | |
8519 | ||
8520 | offset = info_ptr - reader->buffer; | |
8521 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8522 | info_ptr += bytes_read; | |
8523 | if (!abbrev_number) | |
8524 | { | |
8525 | *diep = NULL; | |
8526 | *has_children = 0; | |
8527 | return info_ptr; | |
8528 | } | |
8529 | ||
8530 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
8531 | if (!abbrev) | |
348e048f DE |
8532 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
8533 | abbrev_number, | |
8534 | bfd_get_filename (abfd)); | |
8535 | ||
93311388 DE |
8536 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
8537 | die->offset = offset; | |
8538 | die->tag = abbrev->tag; | |
8539 | die->abbrev = abbrev_number; | |
8540 | ||
8541 | die->num_attrs = abbrev->num_attrs; | |
8542 | ||
8543 | for (i = 0; i < abbrev->num_attrs; ++i) | |
8544 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
8545 | abfd, info_ptr, cu); | |
8546 | ||
8547 | *diep = die; | |
8548 | *has_children = abbrev->has_children; | |
8549 | return info_ptr; | |
8550 | } | |
8551 | ||
c906108c SS |
8552 | /* In DWARF version 2, the description of the debugging information is |
8553 | stored in a separate .debug_abbrev section. Before we read any | |
8554 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
8555 | in a hash table. This function also sets flags in CU describing |
8556 | the data found in the abbrev table. */ | |
c906108c SS |
8557 | |
8558 | static void | |
e7c27a73 | 8559 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 8560 | { |
e7c27a73 | 8561 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 8562 | gdb_byte *abbrev_ptr; |
c906108c SS |
8563 | struct abbrev_info *cur_abbrev; |
8564 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
8565 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
8566 | struct attr_abbrev *cur_attrs; |
8567 | unsigned int allocated_attrs; | |
c906108c | 8568 | |
0963b4bd | 8569 | /* Initialize dwarf2 abbrevs. */ |
f3dd6933 DJ |
8570 | obstack_init (&cu->abbrev_obstack); |
8571 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
8572 | (ABBREV_HASH_SIZE | |
8573 | * sizeof (struct abbrev_info *))); | |
8574 | memset (cu->dwarf2_abbrevs, 0, | |
8575 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 8576 | |
be391dca TT |
8577 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
8578 | &dwarf2_per_objfile->abbrev); | |
dce234bc | 8579 | abbrev_ptr = dwarf2_per_objfile->abbrev.buffer + cu_header->abbrev_offset; |
c906108c SS |
8580 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8581 | abbrev_ptr += bytes_read; | |
8582 | ||
f3dd6933 DJ |
8583 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8584 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 8585 | |
0963b4bd | 8586 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
8587 | while (abbrev_number) |
8588 | { | |
f3dd6933 | 8589 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
8590 | |
8591 | /* read in abbrev header */ | |
8592 | cur_abbrev->number = abbrev_number; | |
8593 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8594 | abbrev_ptr += bytes_read; | |
8595 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
8596 | abbrev_ptr += 1; | |
8597 | ||
72bf9492 DJ |
8598 | if (cur_abbrev->tag == DW_TAG_namespace) |
8599 | cu->has_namespace_info = 1; | |
8600 | ||
c906108c SS |
8601 | /* now read in declarations */ |
8602 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8603 | abbrev_ptr += bytes_read; | |
8604 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8605 | abbrev_ptr += bytes_read; | |
8606 | while (abbrev_name) | |
8607 | { | |
f3dd6933 | 8608 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 8609 | { |
f3dd6933 DJ |
8610 | allocated_attrs += ATTR_ALLOC_CHUNK; |
8611 | cur_attrs | |
8612 | = xrealloc (cur_attrs, (allocated_attrs | |
8613 | * sizeof (struct attr_abbrev))); | |
c906108c | 8614 | } |
ae038cb0 DJ |
8615 | |
8616 | /* Record whether this compilation unit might have | |
8617 | inter-compilation-unit references. If we don't know what form | |
8618 | this attribute will have, then it might potentially be a | |
8619 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
8620 | references. */ | |
8621 | ||
8622 | if (abbrev_form == DW_FORM_ref_addr | |
8623 | || abbrev_form == DW_FORM_indirect) | |
8624 | cu->has_form_ref_addr = 1; | |
8625 | ||
f3dd6933 DJ |
8626 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
8627 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
8628 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8629 | abbrev_ptr += bytes_read; | |
8630 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8631 | abbrev_ptr += bytes_read; | |
8632 | } | |
8633 | ||
f3dd6933 DJ |
8634 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
8635 | (cur_abbrev->num_attrs | |
8636 | * sizeof (struct attr_abbrev))); | |
8637 | memcpy (cur_abbrev->attrs, cur_attrs, | |
8638 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
8639 | ||
c906108c | 8640 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
8641 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
8642 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
8643 | |
8644 | /* Get next abbreviation. | |
8645 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
8646 | always properly terminated with an abbrev number of 0. |
8647 | Exit loop if we encounter an abbreviation which we have | |
8648 | already read (which means we are about to read the abbreviations | |
8649 | for the next compile unit) or if the end of the abbreviation | |
8650 | table is reached. */ | |
dce234bc PP |
8651 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev.buffer) |
8652 | >= dwarf2_per_objfile->abbrev.size) | |
c906108c SS |
8653 | break; |
8654 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8655 | abbrev_ptr += bytes_read; | |
e7c27a73 | 8656 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
8657 | break; |
8658 | } | |
f3dd6933 DJ |
8659 | |
8660 | xfree (cur_attrs); | |
c906108c SS |
8661 | } |
8662 | ||
f3dd6933 | 8663 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 8664 | |
c906108c | 8665 | static void |
f3dd6933 | 8666 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 8667 | { |
f3dd6933 | 8668 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 8669 | |
f3dd6933 DJ |
8670 | obstack_free (&cu->abbrev_obstack, NULL); |
8671 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
8672 | } |
8673 | ||
8674 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
8675 | ||
8676 | static struct abbrev_info * | |
e7c27a73 | 8677 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
8678 | { |
8679 | unsigned int hash_number; | |
8680 | struct abbrev_info *abbrev; | |
8681 | ||
8682 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 8683 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
8684 | |
8685 | while (abbrev) | |
8686 | { | |
8687 | if (abbrev->number == number) | |
8688 | return abbrev; | |
8689 | else | |
8690 | abbrev = abbrev->next; | |
8691 | } | |
8692 | return NULL; | |
8693 | } | |
8694 | ||
72bf9492 DJ |
8695 | /* Returns nonzero if TAG represents a type that we might generate a partial |
8696 | symbol for. */ | |
8697 | ||
8698 | static int | |
8699 | is_type_tag_for_partial (int tag) | |
8700 | { | |
8701 | switch (tag) | |
8702 | { | |
8703 | #if 0 | |
8704 | /* Some types that would be reasonable to generate partial symbols for, | |
8705 | that we don't at present. */ | |
8706 | case DW_TAG_array_type: | |
8707 | case DW_TAG_file_type: | |
8708 | case DW_TAG_ptr_to_member_type: | |
8709 | case DW_TAG_set_type: | |
8710 | case DW_TAG_string_type: | |
8711 | case DW_TAG_subroutine_type: | |
8712 | #endif | |
8713 | case DW_TAG_base_type: | |
8714 | case DW_TAG_class_type: | |
680b30c7 | 8715 | case DW_TAG_interface_type: |
72bf9492 DJ |
8716 | case DW_TAG_enumeration_type: |
8717 | case DW_TAG_structure_type: | |
8718 | case DW_TAG_subrange_type: | |
8719 | case DW_TAG_typedef: | |
8720 | case DW_TAG_union_type: | |
8721 | return 1; | |
8722 | default: | |
8723 | return 0; | |
8724 | } | |
8725 | } | |
8726 | ||
8727 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
8728 | ||
8729 | static struct partial_die_info * | |
93311388 DE |
8730 | load_partial_dies (bfd *abfd, gdb_byte *buffer, gdb_byte *info_ptr, |
8731 | int building_psymtab, struct dwarf2_cu *cu) | |
72bf9492 DJ |
8732 | { |
8733 | struct partial_die_info *part_die; | |
8734 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
8735 | struct abbrev_info *abbrev; | |
8736 | unsigned int bytes_read; | |
5afb4e99 | 8737 | unsigned int load_all = 0; |
72bf9492 DJ |
8738 | |
8739 | int nesting_level = 1; | |
8740 | ||
8741 | parent_die = NULL; | |
8742 | last_die = NULL; | |
8743 | ||
5afb4e99 DJ |
8744 | if (cu->per_cu && cu->per_cu->load_all_dies) |
8745 | load_all = 1; | |
8746 | ||
72bf9492 DJ |
8747 | cu->partial_dies |
8748 | = htab_create_alloc_ex (cu->header.length / 12, | |
8749 | partial_die_hash, | |
8750 | partial_die_eq, | |
8751 | NULL, | |
8752 | &cu->comp_unit_obstack, | |
8753 | hashtab_obstack_allocate, | |
8754 | dummy_obstack_deallocate); | |
8755 | ||
8756 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
8757 | sizeof (struct partial_die_info)); | |
8758 | ||
8759 | while (1) | |
8760 | { | |
8761 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
8762 | ||
8763 | /* A NULL abbrev means the end of a series of children. */ | |
8764 | if (abbrev == NULL) | |
8765 | { | |
8766 | if (--nesting_level == 0) | |
8767 | { | |
8768 | /* PART_DIE was probably the last thing allocated on the | |
8769 | comp_unit_obstack, so we could call obstack_free | |
8770 | here. We don't do that because the waste is small, | |
8771 | and will be cleaned up when we're done with this | |
8772 | compilation unit. This way, we're also more robust | |
8773 | against other users of the comp_unit_obstack. */ | |
8774 | return first_die; | |
8775 | } | |
8776 | info_ptr += bytes_read; | |
8777 | last_die = parent_die; | |
8778 | parent_die = parent_die->die_parent; | |
8779 | continue; | |
8780 | } | |
8781 | ||
98bfdba5 PA |
8782 | /* Check for template arguments. We never save these; if |
8783 | they're seen, we just mark the parent, and go on our way. */ | |
8784 | if (parent_die != NULL | |
8785 | && cu->language == language_cplus | |
8786 | && (abbrev->tag == DW_TAG_template_type_param | |
8787 | || abbrev->tag == DW_TAG_template_value_param)) | |
8788 | { | |
8789 | parent_die->has_template_arguments = 1; | |
8790 | ||
8791 | if (!load_all) | |
8792 | { | |
8793 | /* We don't need a partial DIE for the template argument. */ | |
8794 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, | |
8795 | cu); | |
8796 | continue; | |
8797 | } | |
8798 | } | |
8799 | ||
8800 | /* We only recurse into subprograms looking for template arguments. | |
8801 | Skip their other children. */ | |
8802 | if (!load_all | |
8803 | && cu->language == language_cplus | |
8804 | && parent_die != NULL | |
8805 | && parent_die->tag == DW_TAG_subprogram) | |
8806 | { | |
8807 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); | |
8808 | continue; | |
8809 | } | |
8810 | ||
5afb4e99 DJ |
8811 | /* Check whether this DIE is interesting enough to save. Normally |
8812 | we would not be interested in members here, but there may be | |
8813 | later variables referencing them via DW_AT_specification (for | |
8814 | static members). */ | |
8815 | if (!load_all | |
8816 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 8817 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
8818 | && abbrev->tag != DW_TAG_enumerator |
8819 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 8820 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 8821 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 8822 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 8823 | && abbrev->tag != DW_TAG_module |
5afb4e99 | 8824 | && abbrev->tag != DW_TAG_member) |
72bf9492 DJ |
8825 | { |
8826 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 8827 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
72bf9492 DJ |
8828 | continue; |
8829 | } | |
8830 | ||
93311388 DE |
8831 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, abfd, |
8832 | buffer, info_ptr, cu); | |
72bf9492 DJ |
8833 | |
8834 | /* This two-pass algorithm for processing partial symbols has a | |
8835 | high cost in cache pressure. Thus, handle some simple cases | |
8836 | here which cover the majority of C partial symbols. DIEs | |
8837 | which neither have specification tags in them, nor could have | |
8838 | specification tags elsewhere pointing at them, can simply be | |
8839 | processed and discarded. | |
8840 | ||
8841 | This segment is also optional; scan_partial_symbols and | |
8842 | add_partial_symbol will handle these DIEs if we chain | |
8843 | them in normally. When compilers which do not emit large | |
8844 | quantities of duplicate debug information are more common, | |
8845 | this code can probably be removed. */ | |
8846 | ||
8847 | /* Any complete simple types at the top level (pretty much all | |
8848 | of them, for a language without namespaces), can be processed | |
8849 | directly. */ | |
8850 | if (parent_die == NULL | |
8851 | && part_die->has_specification == 0 | |
8852 | && part_die->is_declaration == 0 | |
8853 | && (part_die->tag == DW_TAG_typedef | |
8854 | || part_die->tag == DW_TAG_base_type | |
8855 | || part_die->tag == DW_TAG_subrange_type)) | |
8856 | { | |
8857 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 8858 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 DJ |
8859 | VAR_DOMAIN, LOC_TYPEDEF, |
8860 | &cu->objfile->static_psymbols, | |
8861 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
93311388 | 8862 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8863 | continue; |
8864 | } | |
8865 | ||
8866 | /* If we're at the second level, and we're an enumerator, and | |
8867 | our parent has no specification (meaning possibly lives in a | |
8868 | namespace elsewhere), then we can add the partial symbol now | |
8869 | instead of queueing it. */ | |
8870 | if (part_die->tag == DW_TAG_enumerator | |
8871 | && parent_die != NULL | |
8872 | && parent_die->die_parent == NULL | |
8873 | && parent_die->tag == DW_TAG_enumeration_type | |
8874 | && parent_die->has_specification == 0) | |
8875 | { | |
8876 | if (part_die->name == NULL) | |
3e43a32a MS |
8877 | complaint (&symfile_complaints, |
8878 | _("malformed enumerator DIE ignored")); | |
72bf9492 | 8879 | else if (building_psymtab) |
04a679b8 | 8880 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 8881 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
8882 | (cu->language == language_cplus |
8883 | || cu->language == language_java) | |
72bf9492 DJ |
8884 | ? &cu->objfile->global_psymbols |
8885 | : &cu->objfile->static_psymbols, | |
8886 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
8887 | ||
93311388 | 8888 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8889 | continue; |
8890 | } | |
8891 | ||
8892 | /* We'll save this DIE so link it in. */ | |
8893 | part_die->die_parent = parent_die; | |
8894 | part_die->die_sibling = NULL; | |
8895 | part_die->die_child = NULL; | |
8896 | ||
8897 | if (last_die && last_die == parent_die) | |
8898 | last_die->die_child = part_die; | |
8899 | else if (last_die) | |
8900 | last_die->die_sibling = part_die; | |
8901 | ||
8902 | last_die = part_die; | |
8903 | ||
8904 | if (first_die == NULL) | |
8905 | first_die = part_die; | |
8906 | ||
8907 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
8908 | find interesting need to be in the hash table, because we | |
8909 | also have the parent/sibling/child chains; only those that we | |
8910 | might refer to by offset later during partial symbol reading. | |
8911 | ||
8912 | For now this means things that might have be the target of a | |
8913 | DW_AT_specification, DW_AT_abstract_origin, or | |
8914 | DW_AT_extension. DW_AT_extension will refer only to | |
8915 | namespaces; DW_AT_abstract_origin refers to functions (and | |
8916 | many things under the function DIE, but we do not recurse | |
8917 | into function DIEs during partial symbol reading) and | |
8918 | possibly variables as well; DW_AT_specification refers to | |
8919 | declarations. Declarations ought to have the DW_AT_declaration | |
8920 | flag. It happens that GCC forgets to put it in sometimes, but | |
8921 | only for functions, not for types. | |
8922 | ||
8923 | Adding more things than necessary to the hash table is harmless | |
8924 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
8925 | wasted time in find_partial_die, when we reread the compilation |
8926 | unit with load_all_dies set. */ | |
72bf9492 | 8927 | |
5afb4e99 | 8928 | if (load_all |
72929c62 | 8929 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 8930 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
8931 | || abbrev->tag == DW_TAG_variable |
8932 | || abbrev->tag == DW_TAG_namespace | |
8933 | || part_die->is_declaration) | |
8934 | { | |
8935 | void **slot; | |
8936 | ||
8937 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
8938 | part_die->offset, INSERT); | |
8939 | *slot = part_die; | |
8940 | } | |
8941 | ||
8942 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
8943 | sizeof (struct partial_die_info)); | |
8944 | ||
8945 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 8946 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
8947 | languages we have to, so that we can get at method physnames |
8948 | to infer fully qualified class names, for DW_AT_specification, | |
8949 | and for C++ template arguments. For C++, we also look one level | |
8950 | inside functions to find template arguments (if the name of the | |
8951 | function does not already contain the template arguments). | |
bc30ff58 JB |
8952 | |
8953 | For Ada, we need to scan the children of subprograms and lexical | |
8954 | blocks as well because Ada allows the definition of nested | |
8955 | entities that could be interesting for the debugger, such as | |
8956 | nested subprograms for instance. */ | |
72bf9492 | 8957 | if (last_die->has_children |
5afb4e99 DJ |
8958 | && (load_all |
8959 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 8960 | || last_die->tag == DW_TAG_module |
72bf9492 | 8961 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
8962 | || (cu->language == language_cplus |
8963 | && last_die->tag == DW_TAG_subprogram | |
8964 | && (last_die->name == NULL | |
8965 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
8966 | || (cu->language != language_c |
8967 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 8968 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 8969 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
8970 | || last_die->tag == DW_TAG_union_type)) |
8971 | || (cu->language == language_ada | |
8972 | && (last_die->tag == DW_TAG_subprogram | |
8973 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
8974 | { |
8975 | nesting_level++; | |
8976 | parent_die = last_die; | |
8977 | continue; | |
8978 | } | |
8979 | ||
8980 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 8981 | info_ptr = locate_pdi_sibling (last_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8982 | |
8983 | /* Back to the top, do it again. */ | |
8984 | } | |
8985 | } | |
8986 | ||
c906108c SS |
8987 | /* Read a minimal amount of information into the minimal die structure. */ |
8988 | ||
fe1b8b76 | 8989 | static gdb_byte * |
72bf9492 DJ |
8990 | read_partial_die (struct partial_die_info *part_die, |
8991 | struct abbrev_info *abbrev, | |
8992 | unsigned int abbrev_len, bfd *abfd, | |
93311388 DE |
8993 | gdb_byte *buffer, gdb_byte *info_ptr, |
8994 | struct dwarf2_cu *cu) | |
c906108c | 8995 | { |
fa238c03 | 8996 | unsigned int i; |
c906108c | 8997 | struct attribute attr; |
c5aa993b | 8998 | int has_low_pc_attr = 0; |
c906108c SS |
8999 | int has_high_pc_attr = 0; |
9000 | ||
72bf9492 | 9001 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 9002 | |
93311388 | 9003 | part_die->offset = info_ptr - buffer; |
72bf9492 DJ |
9004 | |
9005 | info_ptr += abbrev_len; | |
9006 | ||
9007 | if (abbrev == NULL) | |
9008 | return info_ptr; | |
9009 | ||
c906108c SS |
9010 | part_die->tag = abbrev->tag; |
9011 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
9012 | |
9013 | for (i = 0; i < abbrev->num_attrs; ++i) | |
9014 | { | |
e7c27a73 | 9015 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
9016 | |
9017 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 9018 | partial symbol table. */ |
c906108c SS |
9019 | switch (attr.name) |
9020 | { | |
9021 | case DW_AT_name: | |
71c25dea TT |
9022 | switch (part_die->tag) |
9023 | { | |
9024 | case DW_TAG_compile_unit: | |
348e048f | 9025 | case DW_TAG_type_unit: |
71c25dea TT |
9026 | /* Compilation units have a DW_AT_name that is a filename, not |
9027 | a source language identifier. */ | |
9028 | case DW_TAG_enumeration_type: | |
9029 | case DW_TAG_enumerator: | |
9030 | /* These tags always have simple identifiers already; no need | |
9031 | to canonicalize them. */ | |
9032 | part_die->name = DW_STRING (&attr); | |
9033 | break; | |
9034 | default: | |
9035 | part_die->name | |
9036 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
95519e0e | 9037 | &cu->objfile->objfile_obstack); |
71c25dea TT |
9038 | break; |
9039 | } | |
c906108c | 9040 | break; |
31ef98ae | 9041 | case DW_AT_linkage_name: |
c906108c | 9042 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
9043 | /* Note that both forms of linkage name might appear. We |
9044 | assume they will be the same, and we only store the last | |
9045 | one we see. */ | |
94af9270 KS |
9046 | if (cu->language == language_ada) |
9047 | part_die->name = DW_STRING (&attr); | |
abc72ce4 | 9048 | part_die->linkage_name = DW_STRING (&attr); |
c906108c SS |
9049 | break; |
9050 | case DW_AT_low_pc: | |
9051 | has_low_pc_attr = 1; | |
9052 | part_die->lowpc = DW_ADDR (&attr); | |
9053 | break; | |
9054 | case DW_AT_high_pc: | |
9055 | has_high_pc_attr = 1; | |
9056 | part_die->highpc = DW_ADDR (&attr); | |
9057 | break; | |
9058 | case DW_AT_location: | |
0963b4bd | 9059 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
9060 | if (attr_form_is_block (&attr)) |
9061 | { | |
9062 | part_die->locdesc = DW_BLOCK (&attr); | |
9063 | } | |
3690dd37 | 9064 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 9065 | { |
4d3c2250 | 9066 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
9067 | } |
9068 | else | |
9069 | { | |
4d3c2250 KB |
9070 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
9071 | "partial symbol information"); | |
8e19ed76 | 9072 | } |
c906108c | 9073 | break; |
c906108c SS |
9074 | case DW_AT_external: |
9075 | part_die->is_external = DW_UNSND (&attr); | |
9076 | break; | |
9077 | case DW_AT_declaration: | |
9078 | part_die->is_declaration = DW_UNSND (&attr); | |
9079 | break; | |
9080 | case DW_AT_type: | |
9081 | part_die->has_type = 1; | |
9082 | break; | |
9083 | case DW_AT_abstract_origin: | |
9084 | case DW_AT_specification: | |
72bf9492 DJ |
9085 | case DW_AT_extension: |
9086 | part_die->has_specification = 1; | |
c764a876 | 9087 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
9088 | break; |
9089 | case DW_AT_sibling: | |
9090 | /* Ignore absolute siblings, they might point outside of | |
9091 | the current compile unit. */ | |
9092 | if (attr.form == DW_FORM_ref_addr) | |
3e43a32a MS |
9093 | complaint (&symfile_complaints, |
9094 | _("ignoring absolute DW_AT_sibling")); | |
c906108c | 9095 | else |
93311388 | 9096 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr); |
c906108c | 9097 | break; |
fa4028e9 JB |
9098 | case DW_AT_byte_size: |
9099 | part_die->has_byte_size = 1; | |
9100 | break; | |
68511cec CES |
9101 | case DW_AT_calling_convention: |
9102 | /* DWARF doesn't provide a way to identify a program's source-level | |
9103 | entry point. DW_AT_calling_convention attributes are only meant | |
9104 | to describe functions' calling conventions. | |
9105 | ||
9106 | However, because it's a necessary piece of information in | |
9107 | Fortran, and because DW_CC_program is the only piece of debugging | |
9108 | information whose definition refers to a 'main program' at all, | |
9109 | several compilers have begun marking Fortran main programs with | |
9110 | DW_CC_program --- even when those functions use the standard | |
9111 | calling conventions. | |
9112 | ||
9113 | So until DWARF specifies a way to provide this information and | |
9114 | compilers pick up the new representation, we'll support this | |
9115 | practice. */ | |
9116 | if (DW_UNSND (&attr) == DW_CC_program | |
9117 | && cu->language == language_fortran) | |
01f8c46d JK |
9118 | { |
9119 | set_main_name (part_die->name); | |
9120 | ||
9121 | /* As this DIE has a static linkage the name would be difficult | |
9122 | to look up later. */ | |
9123 | language_of_main = language_fortran; | |
9124 | } | |
68511cec | 9125 | break; |
c906108c SS |
9126 | default: |
9127 | break; | |
9128 | } | |
9129 | } | |
9130 | ||
9373cf26 JK |
9131 | if (has_low_pc_attr && has_high_pc_attr) |
9132 | { | |
9133 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
9134 | eliminate duplicate copies of functions and vtables and such. | |
9135 | The linker will arbitrarily choose one and discard the others. | |
9136 | The AT_*_pc values for such functions refer to local labels in | |
9137 | these sections. If the section from that file was discarded, the | |
9138 | labels are not in the output, so the relocs get a value of 0. | |
9139 | If this is a discarded function, mark the pc bounds as invalid, | |
9140 | so that GDB will ignore it. */ | |
9141 | if (part_die->lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
9142 | { | |
9143 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); | |
9144 | ||
9145 | complaint (&symfile_complaints, | |
9146 | _("DW_AT_low_pc %s is zero " | |
9147 | "for DIE at 0x%x [in module %s]"), | |
9148 | paddress (gdbarch, part_die->lowpc), | |
9149 | part_die->offset, cu->objfile->name); | |
9150 | } | |
9151 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
9152 | else if (part_die->lowpc >= part_die->highpc) | |
9153 | { | |
9154 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); | |
9155 | ||
9156 | complaint (&symfile_complaints, | |
9157 | _("DW_AT_low_pc %s is not < DW_AT_high_pc %s " | |
9158 | "for DIE at 0x%x [in module %s]"), | |
9159 | paddress (gdbarch, part_die->lowpc), | |
9160 | paddress (gdbarch, part_die->highpc), | |
9161 | part_die->offset, cu->objfile->name); | |
9162 | } | |
9163 | else | |
9164 | part_die->has_pc_info = 1; | |
9165 | } | |
85cbf3d3 | 9166 | |
c906108c SS |
9167 | return info_ptr; |
9168 | } | |
9169 | ||
72bf9492 DJ |
9170 | /* Find a cached partial DIE at OFFSET in CU. */ |
9171 | ||
9172 | static struct partial_die_info * | |
c764a876 | 9173 | find_partial_die_in_comp_unit (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
9174 | { |
9175 | struct partial_die_info *lookup_die = NULL; | |
9176 | struct partial_die_info part_die; | |
9177 | ||
9178 | part_die.offset = offset; | |
9179 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
9180 | ||
72bf9492 DJ |
9181 | return lookup_die; |
9182 | } | |
9183 | ||
348e048f DE |
9184 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
9185 | except in the case of .debug_types DIEs which do not reference | |
9186 | outside their CU (they do however referencing other types via | |
55f1336d | 9187 | DW_FORM_ref_sig8). */ |
72bf9492 DJ |
9188 | |
9189 | static struct partial_die_info * | |
c764a876 | 9190 | find_partial_die (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 | 9191 | { |
5afb4e99 DJ |
9192 | struct dwarf2_per_cu_data *per_cu = NULL; |
9193 | struct partial_die_info *pd = NULL; | |
72bf9492 | 9194 | |
348e048f DE |
9195 | if (cu->per_cu->from_debug_types) |
9196 | { | |
9197 | pd = find_partial_die_in_comp_unit (offset, cu); | |
9198 | if (pd != NULL) | |
9199 | return pd; | |
9200 | goto not_found; | |
9201 | } | |
9202 | ||
45452591 | 9203 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
9204 | { |
9205 | pd = find_partial_die_in_comp_unit (offset, cu); | |
9206 | if (pd != NULL) | |
9207 | return pd; | |
9208 | } | |
72bf9492 | 9209 | |
ae038cb0 DJ |
9210 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
9211 | ||
98bfdba5 PA |
9212 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
9213 | load_partial_comp_unit (per_cu, cu->objfile); | |
ae038cb0 DJ |
9214 | |
9215 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
9216 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
9217 | ||
9218 | if (pd == NULL && per_cu->load_all_dies == 0) | |
9219 | { | |
9220 | struct cleanup *back_to; | |
9221 | struct partial_die_info comp_unit_die; | |
9222 | struct abbrev_info *abbrev; | |
9223 | unsigned int bytes_read; | |
9224 | char *info_ptr; | |
9225 | ||
9226 | per_cu->load_all_dies = 1; | |
9227 | ||
9228 | /* Re-read the DIEs. */ | |
9229 | back_to = make_cleanup (null_cleanup, 0); | |
9230 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
9231 | { | |
9232 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
53d72f98 | 9233 | make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); |
5afb4e99 | 9234 | } |
dce234bc | 9235 | info_ptr = (dwarf2_per_objfile->info.buffer |
d00adf39 DE |
9236 | + per_cu->cu->header.offset |
9237 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
9238 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
9239 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
93311388 DE |
9240 | per_cu->cu->objfile->obfd, |
9241 | dwarf2_per_objfile->info.buffer, info_ptr, | |
5afb4e99 DJ |
9242 | per_cu->cu); |
9243 | if (comp_unit_die.has_children) | |
93311388 DE |
9244 | load_partial_dies (per_cu->cu->objfile->obfd, |
9245 | dwarf2_per_objfile->info.buffer, info_ptr, | |
9246 | 0, per_cu->cu); | |
5afb4e99 DJ |
9247 | do_cleanups (back_to); |
9248 | ||
9249 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
9250 | } | |
9251 | ||
348e048f DE |
9252 | not_found: |
9253 | ||
5afb4e99 DJ |
9254 | if (pd == NULL) |
9255 | internal_error (__FILE__, __LINE__, | |
3e43a32a MS |
9256 | _("could not find partial DIE 0x%x " |
9257 | "in cache [from module %s]\n"), | |
5afb4e99 DJ |
9258 | offset, bfd_get_filename (cu->objfile->obfd)); |
9259 | return pd; | |
72bf9492 DJ |
9260 | } |
9261 | ||
abc72ce4 DE |
9262 | /* See if we can figure out if the class lives in a namespace. We do |
9263 | this by looking for a member function; its demangled name will | |
9264 | contain namespace info, if there is any. */ | |
9265 | ||
9266 | static void | |
9267 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
9268 | struct dwarf2_cu *cu) | |
9269 | { | |
9270 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
9271 | what template types look like, because the demangler | |
9272 | frequently doesn't give the same name as the debug info. We | |
9273 | could fix this by only using the demangled name to get the | |
9274 | prefix (but see comment in read_structure_type). */ | |
9275 | ||
9276 | struct partial_die_info *real_pdi; | |
9277 | struct partial_die_info *child_pdi; | |
9278 | ||
9279 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
9280 | we should not do this. We'll prepend the parent's fully qualified | |
9281 | name when we create the partial symbol. */ | |
9282 | ||
9283 | real_pdi = struct_pdi; | |
9284 | while (real_pdi->has_specification) | |
9285 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); | |
9286 | ||
9287 | if (real_pdi->die_parent != NULL) | |
9288 | return; | |
9289 | ||
9290 | for (child_pdi = struct_pdi->die_child; | |
9291 | child_pdi != NULL; | |
9292 | child_pdi = child_pdi->die_sibling) | |
9293 | { | |
9294 | if (child_pdi->tag == DW_TAG_subprogram | |
9295 | && child_pdi->linkage_name != NULL) | |
9296 | { | |
9297 | char *actual_class_name | |
9298 | = language_class_name_from_physname (cu->language_defn, | |
9299 | child_pdi->linkage_name); | |
9300 | if (actual_class_name != NULL) | |
9301 | { | |
9302 | struct_pdi->name | |
9303 | = obsavestring (actual_class_name, | |
9304 | strlen (actual_class_name), | |
9305 | &cu->objfile->objfile_obstack); | |
9306 | xfree (actual_class_name); | |
9307 | } | |
9308 | break; | |
9309 | } | |
9310 | } | |
9311 | } | |
9312 | ||
72bf9492 DJ |
9313 | /* Adjust PART_DIE before generating a symbol for it. This function |
9314 | may set the is_external flag or change the DIE's name. */ | |
9315 | ||
9316 | static void | |
9317 | fixup_partial_die (struct partial_die_info *part_die, | |
9318 | struct dwarf2_cu *cu) | |
9319 | { | |
abc72ce4 DE |
9320 | /* Once we've fixed up a die, there's no point in doing so again. |
9321 | This also avoids a memory leak if we were to call | |
9322 | guess_partial_die_structure_name multiple times. */ | |
9323 | if (part_die->fixup_called) | |
9324 | return; | |
9325 | ||
72bf9492 DJ |
9326 | /* If we found a reference attribute and the DIE has no name, try |
9327 | to find a name in the referred to DIE. */ | |
9328 | ||
9329 | if (part_die->name == NULL && part_die->has_specification) | |
9330 | { | |
9331 | struct partial_die_info *spec_die; | |
72bf9492 | 9332 | |
10b3939b | 9333 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 9334 | |
10b3939b | 9335 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
9336 | |
9337 | if (spec_die->name) | |
9338 | { | |
9339 | part_die->name = spec_die->name; | |
9340 | ||
9341 | /* Copy DW_AT_external attribute if it is set. */ | |
9342 | if (spec_die->is_external) | |
9343 | part_die->is_external = spec_die->is_external; | |
9344 | } | |
9345 | } | |
9346 | ||
9347 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 DJ |
9348 | |
9349 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
9350 | part_die->name = "(anonymous namespace)"; | |
9351 | ||
abc72ce4 DE |
9352 | /* If there is no parent die to provide a namespace, and there are |
9353 | children, see if we can determine the namespace from their linkage | |
9354 | name. | |
9355 | NOTE: We need to do this even if cu->has_namespace_info != 0. | |
9356 | gcc-4.5 -gdwarf-4 can drop the enclosing namespace. */ | |
9357 | if (cu->language == language_cplus | |
9358 | && dwarf2_per_objfile->types.asection != NULL | |
9359 | && part_die->die_parent == NULL | |
9360 | && part_die->has_children | |
9361 | && (part_die->tag == DW_TAG_class_type | |
9362 | || part_die->tag == DW_TAG_structure_type | |
9363 | || part_die->tag == DW_TAG_union_type)) | |
9364 | guess_partial_die_structure_name (part_die, cu); | |
9365 | ||
9366 | part_die->fixup_called = 1; | |
72bf9492 DJ |
9367 | } |
9368 | ||
a8329558 | 9369 | /* Read an attribute value described by an attribute form. */ |
c906108c | 9370 | |
fe1b8b76 | 9371 | static gdb_byte * |
a8329558 | 9372 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 9373 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 9374 | struct dwarf2_cu *cu) |
c906108c | 9375 | { |
e7c27a73 | 9376 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
9377 | unsigned int bytes_read; |
9378 | struct dwarf_block *blk; | |
9379 | ||
a8329558 KW |
9380 | attr->form = form; |
9381 | switch (form) | |
c906108c | 9382 | { |
c906108c | 9383 | case DW_FORM_ref_addr: |
ae411497 TT |
9384 | if (cu->header.version == 2) |
9385 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); | |
9386 | else | |
3e43a32a MS |
9387 | DW_ADDR (attr) = read_offset (abfd, info_ptr, |
9388 | &cu->header, &bytes_read); | |
ae411497 TT |
9389 | info_ptr += bytes_read; |
9390 | break; | |
9391 | case DW_FORM_addr: | |
e7c27a73 | 9392 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 9393 | info_ptr += bytes_read; |
c906108c SS |
9394 | break; |
9395 | case DW_FORM_block2: | |
7b5a2f43 | 9396 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9397 | blk->size = read_2_bytes (abfd, info_ptr); |
9398 | info_ptr += 2; | |
9399 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9400 | info_ptr += blk->size; | |
9401 | DW_BLOCK (attr) = blk; | |
9402 | break; | |
9403 | case DW_FORM_block4: | |
7b5a2f43 | 9404 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9405 | blk->size = read_4_bytes (abfd, info_ptr); |
9406 | info_ptr += 4; | |
9407 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9408 | info_ptr += blk->size; | |
9409 | DW_BLOCK (attr) = blk; | |
9410 | break; | |
9411 | case DW_FORM_data2: | |
9412 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
9413 | info_ptr += 2; | |
9414 | break; | |
9415 | case DW_FORM_data4: | |
9416 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
9417 | info_ptr += 4; | |
9418 | break; | |
9419 | case DW_FORM_data8: | |
9420 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
9421 | info_ptr += 8; | |
9422 | break; | |
2dc7f7b3 TT |
9423 | case DW_FORM_sec_offset: |
9424 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
9425 | info_ptr += bytes_read; | |
9426 | break; | |
c906108c | 9427 | case DW_FORM_string: |
9b1c24c8 | 9428 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 9429 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
9430 | info_ptr += bytes_read; |
9431 | break; | |
4bdf3d34 JJ |
9432 | case DW_FORM_strp: |
9433 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
9434 | &bytes_read); | |
8285870a | 9435 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
9436 | info_ptr += bytes_read; |
9437 | break; | |
2dc7f7b3 | 9438 | case DW_FORM_exprloc: |
c906108c | 9439 | case DW_FORM_block: |
7b5a2f43 | 9440 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9441 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
9442 | info_ptr += bytes_read; | |
9443 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9444 | info_ptr += blk->size; | |
9445 | DW_BLOCK (attr) = blk; | |
9446 | break; | |
9447 | case DW_FORM_block1: | |
7b5a2f43 | 9448 | blk = dwarf_alloc_block (cu); |
c906108c SS |
9449 | blk->size = read_1_byte (abfd, info_ptr); |
9450 | info_ptr += 1; | |
9451 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
9452 | info_ptr += blk->size; | |
9453 | DW_BLOCK (attr) = blk; | |
9454 | break; | |
9455 | case DW_FORM_data1: | |
9456 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
9457 | info_ptr += 1; | |
9458 | break; | |
9459 | case DW_FORM_flag: | |
9460 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
9461 | info_ptr += 1; | |
9462 | break; | |
2dc7f7b3 TT |
9463 | case DW_FORM_flag_present: |
9464 | DW_UNSND (attr) = 1; | |
9465 | break; | |
c906108c SS |
9466 | case DW_FORM_sdata: |
9467 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
9468 | info_ptr += bytes_read; | |
9469 | break; | |
9470 | case DW_FORM_udata: | |
9471 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9472 | info_ptr += bytes_read; | |
9473 | break; | |
9474 | case DW_FORM_ref1: | |
10b3939b | 9475 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
9476 | info_ptr += 1; |
9477 | break; | |
9478 | case DW_FORM_ref2: | |
10b3939b | 9479 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
9480 | info_ptr += 2; |
9481 | break; | |
9482 | case DW_FORM_ref4: | |
10b3939b | 9483 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
9484 | info_ptr += 4; |
9485 | break; | |
613e1657 | 9486 | case DW_FORM_ref8: |
10b3939b | 9487 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
9488 | info_ptr += 8; |
9489 | break; | |
55f1336d | 9490 | case DW_FORM_ref_sig8: |
348e048f DE |
9491 | /* Convert the signature to something we can record in DW_UNSND |
9492 | for later lookup. | |
9493 | NOTE: This is NULL if the type wasn't found. */ | |
9494 | DW_SIGNATURED_TYPE (attr) = | |
9495 | lookup_signatured_type (cu->objfile, read_8_bytes (abfd, info_ptr)); | |
9496 | info_ptr += 8; | |
9497 | break; | |
c906108c | 9498 | case DW_FORM_ref_udata: |
10b3939b DJ |
9499 | DW_ADDR (attr) = (cu->header.offset |
9500 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
9501 | info_ptr += bytes_read; |
9502 | break; | |
c906108c | 9503 | case DW_FORM_indirect: |
a8329558 KW |
9504 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
9505 | info_ptr += bytes_read; | |
e7c27a73 | 9506 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 9507 | break; |
c906108c | 9508 | default: |
8a3fe4f8 | 9509 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
9510 | dwarf_form_name (form), |
9511 | bfd_get_filename (abfd)); | |
c906108c | 9512 | } |
28e94949 JB |
9513 | |
9514 | /* We have seen instances where the compiler tried to emit a byte | |
9515 | size attribute of -1 which ended up being encoded as an unsigned | |
9516 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
9517 | an object of this size seems pretty unlikely so we can relatively | |
9518 | safely treat these cases as if the size attribute was invalid and | |
9519 | treat them as zero by default. */ | |
9520 | if (attr->name == DW_AT_byte_size | |
9521 | && form == DW_FORM_data4 | |
9522 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
9523 | { |
9524 | complaint | |
9525 | (&symfile_complaints, | |
43bbcdc2 PH |
9526 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
9527 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
9528 | DW_UNSND (attr) = 0; |
9529 | } | |
28e94949 | 9530 | |
c906108c SS |
9531 | return info_ptr; |
9532 | } | |
9533 | ||
a8329558 KW |
9534 | /* Read an attribute described by an abbreviated attribute. */ |
9535 | ||
fe1b8b76 | 9536 | static gdb_byte * |
a8329558 | 9537 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 9538 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
9539 | { |
9540 | attr->name = abbrev->name; | |
e7c27a73 | 9541 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
9542 | } |
9543 | ||
0963b4bd | 9544 | /* Read dwarf information from a buffer. */ |
c906108c SS |
9545 | |
9546 | static unsigned int | |
fe1b8b76 | 9547 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9548 | { |
fe1b8b76 | 9549 | return bfd_get_8 (abfd, buf); |
c906108c SS |
9550 | } |
9551 | ||
9552 | static int | |
fe1b8b76 | 9553 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9554 | { |
fe1b8b76 | 9555 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
9556 | } |
9557 | ||
9558 | static unsigned int | |
fe1b8b76 | 9559 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9560 | { |
fe1b8b76 | 9561 | return bfd_get_16 (abfd, buf); |
c906108c SS |
9562 | } |
9563 | ||
9564 | static int | |
fe1b8b76 | 9565 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9566 | { |
fe1b8b76 | 9567 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
9568 | } |
9569 | ||
9570 | static unsigned int | |
fe1b8b76 | 9571 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9572 | { |
fe1b8b76 | 9573 | return bfd_get_32 (abfd, buf); |
c906108c SS |
9574 | } |
9575 | ||
9576 | static int | |
fe1b8b76 | 9577 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9578 | { |
fe1b8b76 | 9579 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
9580 | } |
9581 | ||
93311388 | 9582 | static ULONGEST |
fe1b8b76 | 9583 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9584 | { |
fe1b8b76 | 9585 | return bfd_get_64 (abfd, buf); |
c906108c SS |
9586 | } |
9587 | ||
9588 | static CORE_ADDR | |
fe1b8b76 | 9589 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 9590 | unsigned int *bytes_read) |
c906108c | 9591 | { |
e7c27a73 | 9592 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
9593 | CORE_ADDR retval = 0; |
9594 | ||
107d2387 | 9595 | if (cu_header->signed_addr_p) |
c906108c | 9596 | { |
107d2387 AC |
9597 | switch (cu_header->addr_size) |
9598 | { | |
9599 | case 2: | |
fe1b8b76 | 9600 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
9601 | break; |
9602 | case 4: | |
fe1b8b76 | 9603 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
9604 | break; |
9605 | case 8: | |
fe1b8b76 | 9606 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
9607 | break; |
9608 | default: | |
8e65ff28 | 9609 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9610 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 9611 | bfd_get_filename (abfd)); |
107d2387 AC |
9612 | } |
9613 | } | |
9614 | else | |
9615 | { | |
9616 | switch (cu_header->addr_size) | |
9617 | { | |
9618 | case 2: | |
fe1b8b76 | 9619 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
9620 | break; |
9621 | case 4: | |
fe1b8b76 | 9622 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
9623 | break; |
9624 | case 8: | |
fe1b8b76 | 9625 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
9626 | break; |
9627 | default: | |
8e65ff28 | 9628 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
9629 | _("read_address: bad switch, " |
9630 | "unsigned [in module %s]"), | |
659b0389 | 9631 | bfd_get_filename (abfd)); |
107d2387 | 9632 | } |
c906108c | 9633 | } |
64367e0a | 9634 | |
107d2387 AC |
9635 | *bytes_read = cu_header->addr_size; |
9636 | return retval; | |
c906108c SS |
9637 | } |
9638 | ||
f7ef9339 | 9639 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
9640 | specification allows the initial length to take up either 4 bytes |
9641 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
9642 | bytes describe the length and all offsets will be 8 bytes in length | |
9643 | instead of 4. | |
9644 | ||
f7ef9339 KB |
9645 | An older, non-standard 64-bit format is also handled by this |
9646 | function. The older format in question stores the initial length | |
9647 | as an 8-byte quantity without an escape value. Lengths greater | |
9648 | than 2^32 aren't very common which means that the initial 4 bytes | |
9649 | is almost always zero. Since a length value of zero doesn't make | |
9650 | sense for the 32-bit format, this initial zero can be considered to | |
9651 | be an escape value which indicates the presence of the older 64-bit | |
9652 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
9653 | greater than 4GB. If it becomes necessary to handle lengths |
9654 | somewhat larger than 4GB, we could allow other small values (such | |
9655 | as the non-sensical values of 1, 2, and 3) to also be used as | |
9656 | escape values indicating the presence of the old format. | |
f7ef9339 | 9657 | |
917c78fc MK |
9658 | The value returned via bytes_read should be used to increment the |
9659 | relevant pointer after calling read_initial_length(). | |
c764a876 | 9660 | |
613e1657 KB |
9661 | [ Note: read_initial_length() and read_offset() are based on the |
9662 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 9663 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
9664 | from: |
9665 | ||
f7ef9339 | 9666 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 9667 | |
613e1657 KB |
9668 | This document is only a draft and is subject to change. (So beware.) |
9669 | ||
f7ef9339 | 9670 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
9671 | determined empirically by examining 64-bit ELF files produced by |
9672 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
9673 | |
9674 | - Kevin, July 16, 2002 | |
613e1657 KB |
9675 | ] */ |
9676 | ||
9677 | static LONGEST | |
c764a876 | 9678 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 9679 | { |
fe1b8b76 | 9680 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 9681 | |
dd373385 | 9682 | if (length == 0xffffffff) |
613e1657 | 9683 | { |
fe1b8b76 | 9684 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 9685 | *bytes_read = 12; |
613e1657 | 9686 | } |
dd373385 | 9687 | else if (length == 0) |
f7ef9339 | 9688 | { |
dd373385 | 9689 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 9690 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 9691 | *bytes_read = 8; |
f7ef9339 | 9692 | } |
613e1657 KB |
9693 | else |
9694 | { | |
9695 | *bytes_read = 4; | |
613e1657 KB |
9696 | } |
9697 | ||
c764a876 DE |
9698 | return length; |
9699 | } | |
dd373385 | 9700 | |
c764a876 DE |
9701 | /* Cover function for read_initial_length. |
9702 | Returns the length of the object at BUF, and stores the size of the | |
9703 | initial length in *BYTES_READ and stores the size that offsets will be in | |
9704 | *OFFSET_SIZE. | |
9705 | If the initial length size is not equivalent to that specified in | |
9706 | CU_HEADER then issue a complaint. | |
9707 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 9708 | |
c764a876 DE |
9709 | static LONGEST |
9710 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
9711 | const struct comp_unit_head *cu_header, | |
9712 | unsigned int *bytes_read, | |
9713 | unsigned int *offset_size) | |
9714 | { | |
9715 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
9716 | ||
9717 | gdb_assert (cu_header->initial_length_size == 4 | |
9718 | || cu_header->initial_length_size == 8 | |
9719 | || cu_header->initial_length_size == 12); | |
9720 | ||
9721 | if (cu_header->initial_length_size != *bytes_read) | |
9722 | complaint (&symfile_complaints, | |
9723 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 9724 | |
c764a876 | 9725 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 9726 | return length; |
613e1657 KB |
9727 | } |
9728 | ||
9729 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 9730 | given by cu_header->offset_size. */ |
613e1657 KB |
9731 | |
9732 | static LONGEST | |
fe1b8b76 | 9733 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 9734 | unsigned int *bytes_read) |
c764a876 DE |
9735 | { |
9736 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 9737 | |
c764a876 DE |
9738 | *bytes_read = cu_header->offset_size; |
9739 | return offset; | |
9740 | } | |
9741 | ||
9742 | /* Read an offset from the data stream. */ | |
9743 | ||
9744 | static LONGEST | |
9745 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
9746 | { |
9747 | LONGEST retval = 0; | |
9748 | ||
c764a876 | 9749 | switch (offset_size) |
613e1657 KB |
9750 | { |
9751 | case 4: | |
fe1b8b76 | 9752 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
9753 | break; |
9754 | case 8: | |
fe1b8b76 | 9755 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
9756 | break; |
9757 | default: | |
8e65ff28 | 9758 | internal_error (__FILE__, __LINE__, |
c764a876 | 9759 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 9760 | bfd_get_filename (abfd)); |
613e1657 KB |
9761 | } |
9762 | ||
917c78fc | 9763 | return retval; |
613e1657 KB |
9764 | } |
9765 | ||
fe1b8b76 JB |
9766 | static gdb_byte * |
9767 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
9768 | { |
9769 | /* If the size of a host char is 8 bits, we can return a pointer | |
9770 | to the buffer, otherwise we have to copy the data to a buffer | |
9771 | allocated on the temporary obstack. */ | |
4bdf3d34 | 9772 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 9773 | return buf; |
c906108c SS |
9774 | } |
9775 | ||
9776 | static char * | |
9b1c24c8 | 9777 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
9778 | { |
9779 | /* If the size of a host char is 8 bits, we can return a pointer | |
9780 | to the string, otherwise we have to copy the string to a buffer | |
9781 | allocated on the temporary obstack. */ | |
4bdf3d34 | 9782 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
9783 | if (*buf == '\0') |
9784 | { | |
9785 | *bytes_read_ptr = 1; | |
9786 | return NULL; | |
9787 | } | |
fe1b8b76 JB |
9788 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
9789 | return (char *) buf; | |
4bdf3d34 JJ |
9790 | } |
9791 | ||
9792 | static char * | |
fe1b8b76 | 9793 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
9794 | const struct comp_unit_head *cu_header, |
9795 | unsigned int *bytes_read_ptr) | |
9796 | { | |
c764a876 | 9797 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); |
c906108c | 9798 | |
be391dca | 9799 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 9800 | if (dwarf2_per_objfile->str.buffer == NULL) |
c906108c | 9801 | { |
8a3fe4f8 | 9802 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 9803 | bfd_get_filename (abfd)); |
4bdf3d34 | 9804 | return NULL; |
c906108c | 9805 | } |
dce234bc | 9806 | if (str_offset >= dwarf2_per_objfile->str.size) |
c906108c | 9807 | { |
3e43a32a MS |
9808 | error (_("DW_FORM_strp pointing outside of " |
9809 | ".debug_str section [in module %s]"), | |
9810 | bfd_get_filename (abfd)); | |
c906108c SS |
9811 | return NULL; |
9812 | } | |
4bdf3d34 | 9813 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 9814 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 9815 | return NULL; |
dce234bc | 9816 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
9817 | } |
9818 | ||
ce5d95e1 | 9819 | static unsigned long |
fe1b8b76 | 9820 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 9821 | { |
ce5d95e1 JB |
9822 | unsigned long result; |
9823 | unsigned int num_read; | |
c906108c SS |
9824 | int i, shift; |
9825 | unsigned char byte; | |
9826 | ||
9827 | result = 0; | |
9828 | shift = 0; | |
9829 | num_read = 0; | |
9830 | i = 0; | |
9831 | while (1) | |
9832 | { | |
fe1b8b76 | 9833 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
9834 | buf++; |
9835 | num_read++; | |
ce5d95e1 | 9836 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
9837 | if ((byte & 128) == 0) |
9838 | { | |
9839 | break; | |
9840 | } | |
9841 | shift += 7; | |
9842 | } | |
9843 | *bytes_read_ptr = num_read; | |
9844 | return result; | |
9845 | } | |
9846 | ||
ce5d95e1 | 9847 | static long |
fe1b8b76 | 9848 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 9849 | { |
ce5d95e1 | 9850 | long result; |
77e0b926 | 9851 | int i, shift, num_read; |
c906108c SS |
9852 | unsigned char byte; |
9853 | ||
9854 | result = 0; | |
9855 | shift = 0; | |
c906108c SS |
9856 | num_read = 0; |
9857 | i = 0; | |
9858 | while (1) | |
9859 | { | |
fe1b8b76 | 9860 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
9861 | buf++; |
9862 | num_read++; | |
ce5d95e1 | 9863 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
9864 | shift += 7; |
9865 | if ((byte & 128) == 0) | |
9866 | { | |
9867 | break; | |
9868 | } | |
9869 | } | |
77e0b926 DJ |
9870 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
9871 | result |= -(((long)1) << shift); | |
c906108c SS |
9872 | *bytes_read_ptr = num_read; |
9873 | return result; | |
9874 | } | |
9875 | ||
4bb7a0a7 DJ |
9876 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
9877 | ||
fe1b8b76 JB |
9878 | static gdb_byte * |
9879 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
9880 | { |
9881 | int byte; | |
9882 | ||
9883 | while (1) | |
9884 | { | |
fe1b8b76 | 9885 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
9886 | buf++; |
9887 | if ((byte & 128) == 0) | |
9888 | return buf; | |
9889 | } | |
9890 | } | |
9891 | ||
c906108c | 9892 | static void |
e142c38c | 9893 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
9894 | { |
9895 | switch (lang) | |
9896 | { | |
9897 | case DW_LANG_C89: | |
76bee0cc | 9898 | case DW_LANG_C99: |
c906108c | 9899 | case DW_LANG_C: |
e142c38c | 9900 | cu->language = language_c; |
c906108c SS |
9901 | break; |
9902 | case DW_LANG_C_plus_plus: | |
e142c38c | 9903 | cu->language = language_cplus; |
c906108c | 9904 | break; |
6aecb9c2 JB |
9905 | case DW_LANG_D: |
9906 | cu->language = language_d; | |
9907 | break; | |
c906108c SS |
9908 | case DW_LANG_Fortran77: |
9909 | case DW_LANG_Fortran90: | |
b21b22e0 | 9910 | case DW_LANG_Fortran95: |
e142c38c | 9911 | cu->language = language_fortran; |
c906108c SS |
9912 | break; |
9913 | case DW_LANG_Mips_Assembler: | |
e142c38c | 9914 | cu->language = language_asm; |
c906108c | 9915 | break; |
bebd888e | 9916 | case DW_LANG_Java: |
e142c38c | 9917 | cu->language = language_java; |
bebd888e | 9918 | break; |
c906108c | 9919 | case DW_LANG_Ada83: |
8aaf0b47 | 9920 | case DW_LANG_Ada95: |
bc5f45f8 JB |
9921 | cu->language = language_ada; |
9922 | break; | |
72019c9c GM |
9923 | case DW_LANG_Modula2: |
9924 | cu->language = language_m2; | |
9925 | break; | |
fe8e67fd PM |
9926 | case DW_LANG_Pascal83: |
9927 | cu->language = language_pascal; | |
9928 | break; | |
22566fbd DJ |
9929 | case DW_LANG_ObjC: |
9930 | cu->language = language_objc; | |
9931 | break; | |
c906108c SS |
9932 | case DW_LANG_Cobol74: |
9933 | case DW_LANG_Cobol85: | |
c906108c | 9934 | default: |
e142c38c | 9935 | cu->language = language_minimal; |
c906108c SS |
9936 | break; |
9937 | } | |
e142c38c | 9938 | cu->language_defn = language_def (cu->language); |
c906108c SS |
9939 | } |
9940 | ||
9941 | /* Return the named attribute or NULL if not there. */ | |
9942 | ||
9943 | static struct attribute * | |
e142c38c | 9944 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
9945 | { |
9946 | unsigned int i; | |
9947 | struct attribute *spec = NULL; | |
9948 | ||
9949 | for (i = 0; i < die->num_attrs; ++i) | |
9950 | { | |
9951 | if (die->attrs[i].name == name) | |
10b3939b | 9952 | return &die->attrs[i]; |
c906108c SS |
9953 | if (die->attrs[i].name == DW_AT_specification |
9954 | || die->attrs[i].name == DW_AT_abstract_origin) | |
9955 | spec = &die->attrs[i]; | |
9956 | } | |
c906108c | 9957 | |
10b3939b | 9958 | if (spec) |
f2f0e013 DJ |
9959 | { |
9960 | die = follow_die_ref (die, spec, &cu); | |
9961 | return dwarf2_attr (die, name, cu); | |
9962 | } | |
c5aa993b | 9963 | |
c906108c SS |
9964 | return NULL; |
9965 | } | |
9966 | ||
348e048f DE |
9967 | /* Return the named attribute or NULL if not there, |
9968 | but do not follow DW_AT_specification, etc. | |
9969 | This is for use in contexts where we're reading .debug_types dies. | |
9970 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
9971 | back up the chain, and we want to go down. */ | |
9972 | ||
9973 | static struct attribute * | |
9974 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
9975 | struct dwarf2_cu *cu) | |
9976 | { | |
9977 | unsigned int i; | |
9978 | ||
9979 | for (i = 0; i < die->num_attrs; ++i) | |
9980 | if (die->attrs[i].name == name) | |
9981 | return &die->attrs[i]; | |
9982 | ||
9983 | return NULL; | |
9984 | } | |
9985 | ||
05cf31d1 JB |
9986 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
9987 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 9988 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
9989 | |
9990 | static int | |
9991 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
9992 | { | |
9993 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
9994 | ||
9995 | return (attr && DW_UNSND (attr)); | |
9996 | } | |
9997 | ||
3ca72b44 | 9998 | static int |
e142c38c | 9999 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 10000 | { |
05cf31d1 JB |
10001 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
10002 | which value is non-zero. However, we have to be careful with | |
10003 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
10004 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
10005 | end up accidently finding a declaration attribute that belongs | |
10006 | to a different DIE referenced by the specification attribute, | |
10007 | even though the given DIE does not have a declaration attribute. */ | |
10008 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
10009 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
10010 | } |
10011 | ||
63d06c5c | 10012 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 10013 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
10014 | containing the return value on output. If there is no |
10015 | specification, but there is an abstract origin, that is | |
10016 | returned. */ | |
63d06c5c DC |
10017 | |
10018 | static struct die_info * | |
f2f0e013 | 10019 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 10020 | { |
f2f0e013 DJ |
10021 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
10022 | *spec_cu); | |
63d06c5c | 10023 | |
edb3359d DJ |
10024 | if (spec_attr == NULL) |
10025 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
10026 | ||
63d06c5c DC |
10027 | if (spec_attr == NULL) |
10028 | return NULL; | |
10029 | else | |
f2f0e013 | 10030 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 10031 | } |
c906108c | 10032 | |
debd256d | 10033 | /* Free the line_header structure *LH, and any arrays and strings it |
ae2de4f8 DE |
10034 | refers to. |
10035 | NOTE: This is also used as a "cleanup" function. */ | |
10036 | ||
debd256d JB |
10037 | static void |
10038 | free_line_header (struct line_header *lh) | |
10039 | { | |
10040 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 10041 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
10042 | |
10043 | /* Remember that all the lh->file_names[i].name pointers are | |
10044 | pointers into debug_line_buffer, and don't need to be freed. */ | |
10045 | if (lh->file_names) | |
a8bc7b56 | 10046 | xfree (lh->file_names); |
debd256d JB |
10047 | |
10048 | /* Similarly for the include directory names. */ | |
10049 | if (lh->include_dirs) | |
a8bc7b56 | 10050 | xfree (lh->include_dirs); |
debd256d | 10051 | |
a8bc7b56 | 10052 | xfree (lh); |
debd256d JB |
10053 | } |
10054 | ||
debd256d | 10055 | /* Add an entry to LH's include directory table. */ |
ae2de4f8 | 10056 | |
debd256d JB |
10057 | static void |
10058 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 10059 | { |
debd256d JB |
10060 | /* Grow the array if necessary. */ |
10061 | if (lh->include_dirs_size == 0) | |
c5aa993b | 10062 | { |
debd256d JB |
10063 | lh->include_dirs_size = 1; /* for testing */ |
10064 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
10065 | * sizeof (*lh->include_dirs)); | |
10066 | } | |
10067 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
10068 | { | |
10069 | lh->include_dirs_size *= 2; | |
10070 | lh->include_dirs = xrealloc (lh->include_dirs, | |
10071 | (lh->include_dirs_size | |
10072 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 10073 | } |
c906108c | 10074 | |
debd256d JB |
10075 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
10076 | } | |
6e70227d | 10077 | |
debd256d | 10078 | /* Add an entry to LH's file name table. */ |
ae2de4f8 | 10079 | |
debd256d JB |
10080 | static void |
10081 | add_file_name (struct line_header *lh, | |
10082 | char *name, | |
10083 | unsigned int dir_index, | |
10084 | unsigned int mod_time, | |
10085 | unsigned int length) | |
10086 | { | |
10087 | struct file_entry *fe; | |
10088 | ||
10089 | /* Grow the array if necessary. */ | |
10090 | if (lh->file_names_size == 0) | |
10091 | { | |
10092 | lh->file_names_size = 1; /* for testing */ | |
10093 | lh->file_names = xmalloc (lh->file_names_size | |
10094 | * sizeof (*lh->file_names)); | |
10095 | } | |
10096 | else if (lh->num_file_names >= lh->file_names_size) | |
10097 | { | |
10098 | lh->file_names_size *= 2; | |
10099 | lh->file_names = xrealloc (lh->file_names, | |
10100 | (lh->file_names_size | |
10101 | * sizeof (*lh->file_names))); | |
10102 | } | |
10103 | ||
10104 | fe = &lh->file_names[lh->num_file_names++]; | |
10105 | fe->name = name; | |
10106 | fe->dir_index = dir_index; | |
10107 | fe->mod_time = mod_time; | |
10108 | fe->length = length; | |
aaa75496 | 10109 | fe->included_p = 0; |
cb1df416 | 10110 | fe->symtab = NULL; |
debd256d | 10111 | } |
6e70227d | 10112 | |
debd256d | 10113 | /* Read the statement program header starting at OFFSET in |
6502dd73 DJ |
10114 | .debug_line, according to the endianness of ABFD. Return a pointer |
10115 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
10116 | |
10117 | NOTE: the strings in the include directory and file name tables of | |
10118 | the returned object point into debug_line_buffer, and must not be | |
10119 | freed. */ | |
ae2de4f8 | 10120 | |
debd256d JB |
10121 | static struct line_header * |
10122 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 10123 | struct dwarf2_cu *cu) |
debd256d JB |
10124 | { |
10125 | struct cleanup *back_to; | |
10126 | struct line_header *lh; | |
fe1b8b76 | 10127 | gdb_byte *line_ptr; |
c764a876 | 10128 | unsigned int bytes_read, offset_size; |
debd256d JB |
10129 | int i; |
10130 | char *cur_dir, *cur_file; | |
10131 | ||
be391dca | 10132 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->line); |
dce234bc | 10133 | if (dwarf2_per_objfile->line.buffer == NULL) |
debd256d | 10134 | { |
e2e0b3e5 | 10135 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
10136 | return 0; |
10137 | } | |
10138 | ||
a738430d MK |
10139 | /* Make sure that at least there's room for the total_length field. |
10140 | That could be 12 bytes long, but we're just going to fudge that. */ | |
dce234bc | 10141 | if (offset + 4 >= dwarf2_per_objfile->line.size) |
debd256d | 10142 | { |
4d3c2250 | 10143 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
10144 | return 0; |
10145 | } | |
10146 | ||
10147 | lh = xmalloc (sizeof (*lh)); | |
10148 | memset (lh, 0, sizeof (*lh)); | |
10149 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
10150 | (void *) lh); | |
10151 | ||
dce234bc | 10152 | line_ptr = dwarf2_per_objfile->line.buffer + offset; |
debd256d | 10153 | |
a738430d | 10154 | /* Read in the header. */ |
6e70227d | 10155 | lh->total_length = |
c764a876 DE |
10156 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
10157 | &bytes_read, &offset_size); | |
debd256d | 10158 | line_ptr += bytes_read; |
dce234bc PP |
10159 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line.buffer |
10160 | + dwarf2_per_objfile->line.size)) | |
debd256d | 10161 | { |
4d3c2250 | 10162 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
10163 | return 0; |
10164 | } | |
10165 | lh->statement_program_end = line_ptr + lh->total_length; | |
10166 | lh->version = read_2_bytes (abfd, line_ptr); | |
10167 | line_ptr += 2; | |
c764a876 DE |
10168 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
10169 | line_ptr += offset_size; | |
debd256d JB |
10170 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
10171 | line_ptr += 1; | |
2dc7f7b3 TT |
10172 | if (lh->version >= 4) |
10173 | { | |
10174 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
10175 | line_ptr += 1; | |
10176 | } | |
10177 | else | |
10178 | lh->maximum_ops_per_instruction = 1; | |
10179 | ||
10180 | if (lh->maximum_ops_per_instruction == 0) | |
10181 | { | |
10182 | lh->maximum_ops_per_instruction = 1; | |
10183 | complaint (&symfile_complaints, | |
3e43a32a MS |
10184 | _("invalid maximum_ops_per_instruction " |
10185 | "in `.debug_line' section")); | |
2dc7f7b3 TT |
10186 | } |
10187 | ||
debd256d JB |
10188 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
10189 | line_ptr += 1; | |
10190 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
10191 | line_ptr += 1; | |
10192 | lh->line_range = read_1_byte (abfd, line_ptr); | |
10193 | line_ptr += 1; | |
10194 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
10195 | line_ptr += 1; | |
10196 | lh->standard_opcode_lengths | |
fe1b8b76 | 10197 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
10198 | |
10199 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
10200 | for (i = 1; i < lh->opcode_base; ++i) | |
10201 | { | |
10202 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
10203 | line_ptr += 1; | |
10204 | } | |
10205 | ||
a738430d | 10206 | /* Read directory table. */ |
9b1c24c8 | 10207 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
10208 | { |
10209 | line_ptr += bytes_read; | |
10210 | add_include_dir (lh, cur_dir); | |
10211 | } | |
10212 | line_ptr += bytes_read; | |
10213 | ||
a738430d | 10214 | /* Read file name table. */ |
9b1c24c8 | 10215 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
10216 | { |
10217 | unsigned int dir_index, mod_time, length; | |
10218 | ||
10219 | line_ptr += bytes_read; | |
10220 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10221 | line_ptr += bytes_read; | |
10222 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10223 | line_ptr += bytes_read; | |
10224 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10225 | line_ptr += bytes_read; | |
10226 | ||
10227 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
10228 | } | |
10229 | line_ptr += bytes_read; | |
6e70227d | 10230 | lh->statement_program_start = line_ptr; |
debd256d | 10231 | |
dce234bc PP |
10232 | if (line_ptr > (dwarf2_per_objfile->line.buffer |
10233 | + dwarf2_per_objfile->line.size)) | |
4d3c2250 | 10234 | complaint (&symfile_complaints, |
3e43a32a MS |
10235 | _("line number info header doesn't " |
10236 | "fit in `.debug_line' section")); | |
debd256d JB |
10237 | |
10238 | discard_cleanups (back_to); | |
10239 | return lh; | |
10240 | } | |
c906108c | 10241 | |
5fb290d7 DJ |
10242 | /* This function exists to work around a bug in certain compilers |
10243 | (particularly GCC 2.95), in which the first line number marker of a | |
10244 | function does not show up until after the prologue, right before | |
10245 | the second line number marker. This function shifts ADDRESS down | |
10246 | to the beginning of the function if necessary, and is called on | |
10247 | addresses passed to record_line. */ | |
10248 | ||
10249 | static CORE_ADDR | |
e142c38c | 10250 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
10251 | { |
10252 | struct function_range *fn; | |
10253 | ||
10254 | /* Find the function_range containing address. */ | |
e142c38c | 10255 | if (!cu->first_fn) |
5fb290d7 DJ |
10256 | return address; |
10257 | ||
e142c38c DJ |
10258 | if (!cu->cached_fn) |
10259 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 10260 | |
e142c38c | 10261 | fn = cu->cached_fn; |
5fb290d7 DJ |
10262 | while (fn) |
10263 | if (fn->lowpc <= address && fn->highpc > address) | |
10264 | goto found; | |
10265 | else | |
10266 | fn = fn->next; | |
10267 | ||
e142c38c DJ |
10268 | fn = cu->first_fn; |
10269 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
10270 | if (fn->lowpc <= address && fn->highpc > address) |
10271 | goto found; | |
10272 | else | |
10273 | fn = fn->next; | |
10274 | ||
10275 | return address; | |
10276 | ||
10277 | found: | |
10278 | if (fn->seen_line) | |
10279 | return address; | |
10280 | if (address != fn->lowpc) | |
4d3c2250 | 10281 | complaint (&symfile_complaints, |
e2e0b3e5 | 10282 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 10283 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
10284 | fn->seen_line = 1; |
10285 | return fn->lowpc; | |
10286 | } | |
10287 | ||
c6da4cef DE |
10288 | /* Subroutine of dwarf_decode_lines to simplify it. |
10289 | Return the file name of the psymtab for included file FILE_INDEX | |
10290 | in line header LH of PST. | |
10291 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
10292 | If space for the result is malloc'd, it will be freed by a cleanup. | |
10293 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
10294 | ||
10295 | static char * | |
10296 | psymtab_include_file_name (const struct line_header *lh, int file_index, | |
10297 | const struct partial_symtab *pst, | |
10298 | const char *comp_dir) | |
10299 | { | |
10300 | const struct file_entry fe = lh->file_names [file_index]; | |
10301 | char *include_name = fe.name; | |
10302 | char *include_name_to_compare = include_name; | |
10303 | char *dir_name = NULL; | |
72b9f47f TT |
10304 | const char *pst_filename; |
10305 | char *copied_name = NULL; | |
c6da4cef DE |
10306 | int file_is_pst; |
10307 | ||
10308 | if (fe.dir_index) | |
10309 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
10310 | ||
10311 | if (!IS_ABSOLUTE_PATH (include_name) | |
10312 | && (dir_name != NULL || comp_dir != NULL)) | |
10313 | { | |
10314 | /* Avoid creating a duplicate psymtab for PST. | |
10315 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
10316 | Before we do the comparison, however, we need to account | |
10317 | for DIR_NAME and COMP_DIR. | |
10318 | First prepend dir_name (if non-NULL). If we still don't | |
10319 | have an absolute path prepend comp_dir (if non-NULL). | |
10320 | However, the directory we record in the include-file's | |
10321 | psymtab does not contain COMP_DIR (to match the | |
10322 | corresponding symtab(s)). | |
10323 | ||
10324 | Example: | |
10325 | ||
10326 | bash$ cd /tmp | |
10327 | bash$ gcc -g ./hello.c | |
10328 | include_name = "hello.c" | |
10329 | dir_name = "." | |
10330 | DW_AT_comp_dir = comp_dir = "/tmp" | |
10331 | DW_AT_name = "./hello.c" */ | |
10332 | ||
10333 | if (dir_name != NULL) | |
10334 | { | |
10335 | include_name = concat (dir_name, SLASH_STRING, | |
10336 | include_name, (char *)NULL); | |
10337 | include_name_to_compare = include_name; | |
10338 | make_cleanup (xfree, include_name); | |
10339 | } | |
10340 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
10341 | { | |
10342 | include_name_to_compare = concat (comp_dir, SLASH_STRING, | |
10343 | include_name, (char *)NULL); | |
10344 | } | |
10345 | } | |
10346 | ||
10347 | pst_filename = pst->filename; | |
10348 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
10349 | { | |
72b9f47f TT |
10350 | copied_name = concat (pst->dirname, SLASH_STRING, |
10351 | pst_filename, (char *)NULL); | |
10352 | pst_filename = copied_name; | |
c6da4cef DE |
10353 | } |
10354 | ||
1e3fad37 | 10355 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef DE |
10356 | |
10357 | if (include_name_to_compare != include_name) | |
10358 | xfree (include_name_to_compare); | |
72b9f47f TT |
10359 | if (copied_name != NULL) |
10360 | xfree (copied_name); | |
c6da4cef DE |
10361 | |
10362 | if (file_is_pst) | |
10363 | return NULL; | |
10364 | return include_name; | |
10365 | } | |
10366 | ||
c91513d8 PP |
10367 | /* Ignore this record_line request. */ |
10368 | ||
10369 | static void | |
10370 | noop_record_line (struct subfile *subfile, int line, CORE_ADDR pc) | |
10371 | { | |
10372 | return; | |
10373 | } | |
10374 | ||
aaa75496 JB |
10375 | /* Decode the Line Number Program (LNP) for the given line_header |
10376 | structure and CU. The actual information extracted and the type | |
10377 | of structures created from the LNP depends on the value of PST. | |
10378 | ||
10379 | 1. If PST is NULL, then this procedure uses the data from the program | |
10380 | to create all necessary symbol tables, and their linetables. | |
6e70227d | 10381 | |
aaa75496 JB |
10382 | 2. If PST is not NULL, this procedure reads the program to determine |
10383 | the list of files included by the unit represented by PST, and | |
c6da4cef DE |
10384 | builds all the associated partial symbol tables. |
10385 | ||
10386 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
10387 | It is used for relative paths in the line table. | |
10388 | NOTE: When processing partial symtabs (pst != NULL), | |
10389 | comp_dir == pst->dirname. | |
10390 | ||
10391 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
10392 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
10393 | symtab we don't use it in the name of the psymtabs we create. | |
10394 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
10395 | A good testcase for this is mb-inline.exp. */ | |
debd256d | 10396 | |
c906108c | 10397 | static void |
72b9f47f | 10398 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, bfd *abfd, |
aaa75496 | 10399 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 10400 | { |
a8c50c1f | 10401 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 10402 | gdb_byte *line_end; |
a8c50c1f | 10403 | unsigned int bytes_read, extended_len; |
c906108c | 10404 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
10405 | CORE_ADDR baseaddr; |
10406 | struct objfile *objfile = cu->objfile; | |
fbf65064 | 10407 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 10408 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 10409 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
c91513d8 PP |
10410 | void (*p_record_line) (struct subfile *subfile, int line, CORE_ADDR pc) |
10411 | = record_line; | |
e142c38c DJ |
10412 | |
10413 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 10414 | |
debd256d JB |
10415 | line_ptr = lh->statement_program_start; |
10416 | line_end = lh->statement_program_end; | |
c906108c SS |
10417 | |
10418 | /* Read the statement sequences until there's nothing left. */ | |
10419 | while (line_ptr < line_end) | |
10420 | { | |
10421 | /* state machine registers */ | |
10422 | CORE_ADDR address = 0; | |
10423 | unsigned int file = 1; | |
10424 | unsigned int line = 1; | |
10425 | unsigned int column = 0; | |
debd256d | 10426 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
10427 | int basic_block = 0; |
10428 | int end_sequence = 0; | |
fbf65064 | 10429 | CORE_ADDR addr; |
2dc7f7b3 | 10430 | unsigned char op_index = 0; |
c906108c | 10431 | |
aaa75496 | 10432 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 10433 | { |
aaa75496 | 10434 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
10435 | /* lh->include_dirs and lh->file_names are 0-based, but the |
10436 | directory and file name numbers in the statement program | |
10437 | are 1-based. */ | |
10438 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 10439 | char *dir = NULL; |
a738430d | 10440 | |
debd256d JB |
10441 | if (fe->dir_index) |
10442 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
10443 | |
10444 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
10445 | } |
10446 | ||
a738430d | 10447 | /* Decode the table. */ |
c5aa993b | 10448 | while (!end_sequence) |
c906108c SS |
10449 | { |
10450 | op_code = read_1_byte (abfd, line_ptr); | |
10451 | line_ptr += 1; | |
59205f5a JB |
10452 | if (line_ptr > line_end) |
10453 | { | |
10454 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
10455 | break; | |
10456 | } | |
9aa1fe7e | 10457 | |
debd256d | 10458 | if (op_code >= lh->opcode_base) |
6e70227d | 10459 | { |
a738430d | 10460 | /* Special operand. */ |
debd256d | 10461 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
10462 | address += (((op_index + (adj_opcode / lh->line_range)) |
10463 | / lh->maximum_ops_per_instruction) | |
10464 | * lh->minimum_instruction_length); | |
10465 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
10466 | % lh->maximum_ops_per_instruction); | |
debd256d | 10467 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 10468 | if (lh->num_file_names < file || file == 0) |
25e43795 | 10469 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
10470 | /* For now we ignore lines not starting on an |
10471 | instruction boundary. */ | |
10472 | else if (op_index == 0) | |
25e43795 DJ |
10473 | { |
10474 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 10475 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
10476 | { |
10477 | if (last_subfile != current_subfile) | |
10478 | { | |
10479 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10480 | if (last_subfile) | |
c91513d8 | 10481 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
10482 | last_subfile = current_subfile; |
10483 | } | |
25e43795 | 10484 | /* Append row to matrix using current values. */ |
fbf65064 UW |
10485 | addr = check_cu_functions (address, cu); |
10486 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
c91513d8 | 10487 | (*p_record_line) (current_subfile, line, addr); |
366da635 | 10488 | } |
25e43795 | 10489 | } |
ca5f395d | 10490 | basic_block = 0; |
9aa1fe7e GK |
10491 | } |
10492 | else switch (op_code) | |
c906108c SS |
10493 | { |
10494 | case DW_LNS_extended_op: | |
3e43a32a MS |
10495 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
10496 | &bytes_read); | |
473b7be6 | 10497 | line_ptr += bytes_read; |
a8c50c1f | 10498 | extended_end = line_ptr + extended_len; |
c906108c SS |
10499 | extended_op = read_1_byte (abfd, line_ptr); |
10500 | line_ptr += 1; | |
10501 | switch (extended_op) | |
10502 | { | |
10503 | case DW_LNE_end_sequence: | |
c91513d8 | 10504 | p_record_line = record_line; |
c906108c | 10505 | end_sequence = 1; |
c906108c SS |
10506 | break; |
10507 | case DW_LNE_set_address: | |
e7c27a73 | 10508 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
c91513d8 PP |
10509 | |
10510 | if (address == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
10511 | { | |
10512 | /* This line table is for a function which has been | |
10513 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
10514 | ||
10515 | long line_offset | |
10516 | = line_ptr - dwarf2_per_objfile->line.buffer; | |
10517 | ||
10518 | complaint (&symfile_complaints, | |
10519 | _(".debug_line address at offset 0x%lx is 0 " | |
10520 | "[in module %s]"), | |
10521 | line_offset, cu->objfile->name); | |
10522 | p_record_line = noop_record_line; | |
10523 | } | |
10524 | ||
2dc7f7b3 | 10525 | op_index = 0; |
107d2387 AC |
10526 | line_ptr += bytes_read; |
10527 | address += baseaddr; | |
c906108c SS |
10528 | break; |
10529 | case DW_LNE_define_file: | |
debd256d JB |
10530 | { |
10531 | char *cur_file; | |
10532 | unsigned int dir_index, mod_time, length; | |
6e70227d | 10533 | |
3e43a32a MS |
10534 | cur_file = read_direct_string (abfd, line_ptr, |
10535 | &bytes_read); | |
debd256d JB |
10536 | line_ptr += bytes_read; |
10537 | dir_index = | |
10538 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10539 | line_ptr += bytes_read; | |
10540 | mod_time = | |
10541 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10542 | line_ptr += bytes_read; | |
10543 | length = | |
10544 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10545 | line_ptr += bytes_read; | |
10546 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
10547 | } | |
c906108c | 10548 | break; |
d0c6ba3d CC |
10549 | case DW_LNE_set_discriminator: |
10550 | /* The discriminator is not interesting to the debugger; | |
10551 | just ignore it. */ | |
10552 | line_ptr = extended_end; | |
10553 | break; | |
c906108c | 10554 | default: |
4d3c2250 | 10555 | complaint (&symfile_complaints, |
e2e0b3e5 | 10556 | _("mangled .debug_line section")); |
debd256d | 10557 | return; |
c906108c | 10558 | } |
a8c50c1f DJ |
10559 | /* Make sure that we parsed the extended op correctly. If e.g. |
10560 | we expected a different address size than the producer used, | |
10561 | we may have read the wrong number of bytes. */ | |
10562 | if (line_ptr != extended_end) | |
10563 | { | |
10564 | complaint (&symfile_complaints, | |
10565 | _("mangled .debug_line section")); | |
10566 | return; | |
10567 | } | |
c906108c SS |
10568 | break; |
10569 | case DW_LNS_copy: | |
59205f5a | 10570 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
10571 | dwarf2_debug_line_missing_file_complaint (); |
10572 | else | |
366da635 | 10573 | { |
25e43795 | 10574 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 10575 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
10576 | { |
10577 | if (last_subfile != current_subfile) | |
10578 | { | |
10579 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10580 | if (last_subfile) | |
c91513d8 | 10581 | (*p_record_line) (last_subfile, 0, addr); |
fbf65064 UW |
10582 | last_subfile = current_subfile; |
10583 | } | |
10584 | addr = check_cu_functions (address, cu); | |
10585 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
c91513d8 | 10586 | (*p_record_line) (current_subfile, line, addr); |
fbf65064 | 10587 | } |
366da635 | 10588 | } |
c906108c SS |
10589 | basic_block = 0; |
10590 | break; | |
10591 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
10592 | { |
10593 | CORE_ADDR adjust | |
10594 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10595 | ||
10596 | address += (((op_index + adjust) | |
10597 | / lh->maximum_ops_per_instruction) | |
10598 | * lh->minimum_instruction_length); | |
10599 | op_index = ((op_index + adjust) | |
10600 | % lh->maximum_ops_per_instruction); | |
10601 | line_ptr += bytes_read; | |
10602 | } | |
c906108c SS |
10603 | break; |
10604 | case DW_LNS_advance_line: | |
10605 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
10606 | line_ptr += bytes_read; | |
10607 | break; | |
10608 | case DW_LNS_set_file: | |
debd256d | 10609 | { |
a738430d MK |
10610 | /* The arrays lh->include_dirs and lh->file_names are |
10611 | 0-based, but the directory and file name numbers in | |
10612 | the statement program are 1-based. */ | |
debd256d | 10613 | struct file_entry *fe; |
4f1520fb | 10614 | char *dir = NULL; |
a738430d | 10615 | |
debd256d JB |
10616 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
10617 | line_ptr += bytes_read; | |
59205f5a | 10618 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
10619 | dwarf2_debug_line_missing_file_complaint (); |
10620 | else | |
10621 | { | |
10622 | fe = &lh->file_names[file - 1]; | |
10623 | if (fe->dir_index) | |
10624 | dir = lh->include_dirs[fe->dir_index - 1]; | |
10625 | if (!decode_for_pst_p) | |
10626 | { | |
10627 | last_subfile = current_subfile; | |
10628 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
10629 | } | |
10630 | } | |
debd256d | 10631 | } |
c906108c SS |
10632 | break; |
10633 | case DW_LNS_set_column: | |
10634 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10635 | line_ptr += bytes_read; | |
10636 | break; | |
10637 | case DW_LNS_negate_stmt: | |
10638 | is_stmt = (!is_stmt); | |
10639 | break; | |
10640 | case DW_LNS_set_basic_block: | |
10641 | basic_block = 1; | |
10642 | break; | |
c2c6d25f JM |
10643 | /* Add to the address register of the state machine the |
10644 | address increment value corresponding to special opcode | |
a738430d MK |
10645 | 255. I.e., this value is scaled by the minimum |
10646 | instruction length since special opcode 255 would have | |
b021a221 | 10647 | scaled the increment. */ |
c906108c | 10648 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
10649 | { |
10650 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
10651 | ||
10652 | address += (((op_index + adjust) | |
10653 | / lh->maximum_ops_per_instruction) | |
10654 | * lh->minimum_instruction_length); | |
10655 | op_index = ((op_index + adjust) | |
10656 | % lh->maximum_ops_per_instruction); | |
10657 | } | |
c906108c SS |
10658 | break; |
10659 | case DW_LNS_fixed_advance_pc: | |
10660 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 10661 | op_index = 0; |
c906108c SS |
10662 | line_ptr += 2; |
10663 | break; | |
9aa1fe7e | 10664 | default: |
a738430d MK |
10665 | { |
10666 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 10667 | int i; |
a738430d | 10668 | |
debd256d | 10669 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
10670 | { |
10671 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10672 | line_ptr += bytes_read; | |
10673 | } | |
10674 | } | |
c906108c SS |
10675 | } |
10676 | } | |
59205f5a JB |
10677 | if (lh->num_file_names < file || file == 0) |
10678 | dwarf2_debug_line_missing_file_complaint (); | |
10679 | else | |
10680 | { | |
10681 | lh->file_names[file - 1].included_p = 1; | |
10682 | if (!decode_for_pst_p) | |
fbf65064 UW |
10683 | { |
10684 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
c91513d8 | 10685 | (*p_record_line) (current_subfile, 0, addr); |
fbf65064 | 10686 | } |
59205f5a | 10687 | } |
c906108c | 10688 | } |
aaa75496 JB |
10689 | |
10690 | if (decode_for_pst_p) | |
10691 | { | |
10692 | int file_index; | |
10693 | ||
10694 | /* Now that we're done scanning the Line Header Program, we can | |
10695 | create the psymtab of each included file. */ | |
10696 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
10697 | if (lh->file_names[file_index].included_p == 1) | |
10698 | { | |
c6da4cef DE |
10699 | char *include_name = |
10700 | psymtab_include_file_name (lh, file_index, pst, comp_dir); | |
10701 | if (include_name != NULL) | |
aaa75496 JB |
10702 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
10703 | } | |
10704 | } | |
cb1df416 DJ |
10705 | else |
10706 | { | |
10707 | /* Make sure a symtab is created for every file, even files | |
10708 | which contain only variables (i.e. no code with associated | |
10709 | line numbers). */ | |
10710 | ||
10711 | int i; | |
10712 | struct file_entry *fe; | |
10713 | ||
10714 | for (i = 0; i < lh->num_file_names; i++) | |
10715 | { | |
10716 | char *dir = NULL; | |
9a619af0 | 10717 | |
cb1df416 DJ |
10718 | fe = &lh->file_names[i]; |
10719 | if (fe->dir_index) | |
10720 | dir = lh->include_dirs[fe->dir_index - 1]; | |
10721 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
10722 | ||
10723 | /* Skip the main file; we don't need it, and it must be | |
10724 | allocated last, so that it will show up before the | |
10725 | non-primary symtabs in the objfile's symtab list. */ | |
10726 | if (current_subfile == first_subfile) | |
10727 | continue; | |
10728 | ||
10729 | if (current_subfile->symtab == NULL) | |
10730 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
10731 | cu->objfile); | |
10732 | fe->symtab = current_subfile->symtab; | |
10733 | } | |
10734 | } | |
c906108c SS |
10735 | } |
10736 | ||
10737 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
10738 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
10739 | or NULL if not known. COMP_DIR is the compilation directory for the |
10740 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
10741 | This routine tries to keep line numbers from identical absolute and |
10742 | relative file names in a common subfile. | |
10743 | ||
10744 | Using the `list' example from the GDB testsuite, which resides in | |
10745 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
10746 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
10747 | ||
c5aa993b JM |
10748 | DW_AT_name: /srcdir/list0.c |
10749 | DW_AT_comp_dir: /compdir | |
357e46e7 | 10750 | files.files[0].name: list0.h |
c5aa993b | 10751 | files.files[0].dir: /srcdir |
357e46e7 | 10752 | files.files[1].name: list0.c |
c5aa993b | 10753 | files.files[1].dir: /srcdir |
c906108c SS |
10754 | |
10755 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
10756 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
10757 | start_subfile will ensure that this happens provided that we pass the | |
10758 | concatenation of files.files[1].dir and files.files[1].name as the | |
10759 | subfile's name. */ | |
c906108c SS |
10760 | |
10761 | static void | |
3e43a32a MS |
10762 | dwarf2_start_subfile (char *filename, const char *dirname, |
10763 | const char *comp_dir) | |
c906108c | 10764 | { |
4f1520fb FR |
10765 | char *fullname; |
10766 | ||
10767 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
10768 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
10769 | second argument to start_subfile. To be consistent, we do the | |
10770 | same here. In order not to lose the line information directory, | |
10771 | we concatenate it to the filename when it makes sense. | |
10772 | Note that the Dwarf3 standard says (speaking of filenames in line | |
10773 | information): ``The directory index is ignored for file names | |
10774 | that represent full path names''. Thus ignoring dirname in the | |
10775 | `else' branch below isn't an issue. */ | |
c906108c | 10776 | |
d5166ae1 | 10777 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
10778 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
10779 | else | |
10780 | fullname = filename; | |
c906108c | 10781 | |
4f1520fb FR |
10782 | start_subfile (fullname, comp_dir); |
10783 | ||
10784 | if (fullname != filename) | |
10785 | xfree (fullname); | |
c906108c SS |
10786 | } |
10787 | ||
4c2df51b DJ |
10788 | static void |
10789 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 10790 | struct dwarf2_cu *cu) |
4c2df51b | 10791 | { |
e7c27a73 DJ |
10792 | struct objfile *objfile = cu->objfile; |
10793 | struct comp_unit_head *cu_header = &cu->header; | |
10794 | ||
4c2df51b DJ |
10795 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
10796 | code here to turn a symbol with DW_AT_external and a | |
10797 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
10798 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
10799 | with some versions of binutils) where shared libraries could have | |
10800 | relocations against symbols in their debug information - the | |
10801 | minimal symbol would have the right address, but the debug info | |
10802 | would not. It's no longer necessary, because we will explicitly | |
10803 | apply relocations when we read in the debug information now. */ | |
10804 | ||
10805 | /* A DW_AT_location attribute with no contents indicates that a | |
10806 | variable has been optimized away. */ | |
10807 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
10808 | { | |
10809 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
10810 | return; | |
10811 | } | |
10812 | ||
10813 | /* Handle one degenerate form of location expression specially, to | |
10814 | preserve GDB's previous behavior when section offsets are | |
10815 | specified. If this is just a DW_OP_addr then mark this symbol | |
10816 | as LOC_STATIC. */ | |
10817 | ||
10818 | if (attr_form_is_block (attr) | |
10819 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
10820 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
10821 | { | |
891d2f0b | 10822 | unsigned int dummy; |
4c2df51b DJ |
10823 | |
10824 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 10825 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 10826 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
10827 | fixup_symbol_section (sym, objfile); |
10828 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
10829 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
10830 | return; |
10831 | } | |
10832 | ||
10833 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
10834 | expression evaluator, and use LOC_COMPUTED only when necessary | |
10835 | (i.e. when the value of a register or memory location is | |
10836 | referenced, or a thread-local block, etc.). Then again, it might | |
10837 | not be worthwhile. I'm assuming that it isn't unless performance | |
10838 | or memory numbers show me otherwise. */ | |
10839 | ||
e7c27a73 | 10840 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
10841 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
10842 | } | |
10843 | ||
c906108c SS |
10844 | /* Given a pointer to a DWARF information entry, figure out if we need |
10845 | to make a symbol table entry for it, and if so, create a new entry | |
10846 | and return a pointer to it. | |
10847 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
10848 | used the passed type. |
10849 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
10850 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
10851 | |
10852 | static struct symbol * | |
34eaf542 TT |
10853 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
10854 | struct symbol *space) | |
c906108c | 10855 | { |
e7c27a73 | 10856 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10857 | struct symbol *sym = NULL; |
10858 | char *name; | |
10859 | struct attribute *attr = NULL; | |
10860 | struct attribute *attr2 = NULL; | |
e142c38c | 10861 | CORE_ADDR baseaddr; |
e37fd15a SW |
10862 | struct pending **list_to_add = NULL; |
10863 | ||
edb3359d | 10864 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
10865 | |
10866 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 10867 | |
94af9270 | 10868 | name = dwarf2_name (die, cu); |
c906108c SS |
10869 | if (name) |
10870 | { | |
94af9270 | 10871 | const char *linkagename; |
34eaf542 | 10872 | int suppress_add = 0; |
94af9270 | 10873 | |
34eaf542 TT |
10874 | if (space) |
10875 | sym = space; | |
10876 | else | |
10877 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 10878 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
10879 | |
10880 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 10881 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
10882 | linkagename = dwarf2_physname (name, die, cu); |
10883 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 10884 | |
f55ee35c JK |
10885 | /* Fortran does not have mangling standard and the mangling does differ |
10886 | between gfortran, iFort etc. */ | |
10887 | if (cu->language == language_fortran | |
b250c185 | 10888 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
10889 | symbol_set_demangled_name (&(sym->ginfo), |
10890 | (char *) dwarf2_full_name (name, die, cu), | |
10891 | NULL); | |
f55ee35c | 10892 | |
c906108c | 10893 | /* Default assumptions. |
c5aa993b | 10894 | Use the passed type or decode it from the die. */ |
176620f1 | 10895 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 10896 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
10897 | if (type != NULL) |
10898 | SYMBOL_TYPE (sym) = type; | |
10899 | else | |
e7c27a73 | 10900 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
10901 | attr = dwarf2_attr (die, |
10902 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
10903 | cu); | |
c906108c SS |
10904 | if (attr) |
10905 | { | |
10906 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
10907 | } | |
cb1df416 | 10908 | |
edb3359d DJ |
10909 | attr = dwarf2_attr (die, |
10910 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
10911 | cu); | |
cb1df416 DJ |
10912 | if (attr) |
10913 | { | |
10914 | int file_index = DW_UNSND (attr); | |
9a619af0 | 10915 | |
cb1df416 DJ |
10916 | if (cu->line_header == NULL |
10917 | || file_index > cu->line_header->num_file_names) | |
10918 | complaint (&symfile_complaints, | |
10919 | _("file index out of range")); | |
1c3d648d | 10920 | else if (file_index > 0) |
cb1df416 DJ |
10921 | { |
10922 | struct file_entry *fe; | |
9a619af0 | 10923 | |
cb1df416 DJ |
10924 | fe = &cu->line_header->file_names[file_index - 1]; |
10925 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
10926 | } | |
10927 | } | |
10928 | ||
c906108c SS |
10929 | switch (die->tag) |
10930 | { | |
10931 | case DW_TAG_label: | |
e142c38c | 10932 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
10933 | if (attr) |
10934 | { | |
10935 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
10936 | } | |
0f5238ed TT |
10937 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
10938 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 10939 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 10940 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
10941 | break; |
10942 | case DW_TAG_subprogram: | |
10943 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
10944 | finish_block. */ | |
10945 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 10946 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
10947 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
10948 | || cu->language == language_ada) | |
c906108c | 10949 | { |
2cfa0c8d JB |
10950 | /* Subprograms marked external are stored as a global symbol. |
10951 | Ada subprograms, whether marked external or not, are always | |
10952 | stored as a global symbol, because we want to be able to | |
10953 | access them globally. For instance, we want to be able | |
10954 | to break on a nested subprogram without having to | |
10955 | specify the context. */ | |
e37fd15a | 10956 | list_to_add = &global_symbols; |
c906108c SS |
10957 | } |
10958 | else | |
10959 | { | |
e37fd15a | 10960 | list_to_add = cu->list_in_scope; |
c906108c SS |
10961 | } |
10962 | break; | |
edb3359d DJ |
10963 | case DW_TAG_inlined_subroutine: |
10964 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
10965 | finish_block. */ | |
10966 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
10967 | SYMBOL_INLINED (sym) = 1; | |
10968 | /* Do not add the symbol to any lists. It will be found via | |
10969 | BLOCK_FUNCTION from the blockvector. */ | |
10970 | break; | |
34eaf542 TT |
10971 | case DW_TAG_template_value_param: |
10972 | suppress_add = 1; | |
10973 | /* Fall through. */ | |
72929c62 | 10974 | case DW_TAG_constant: |
c906108c | 10975 | case DW_TAG_variable: |
254e6b9e | 10976 | case DW_TAG_member: |
0963b4bd MS |
10977 | /* Compilation with minimal debug info may result in |
10978 | variables with missing type entries. Change the | |
10979 | misleading `void' type to something sensible. */ | |
c906108c | 10980 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
64c50499 | 10981 | SYMBOL_TYPE (sym) |
46bf5051 | 10982 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 10983 | |
e142c38c | 10984 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
10985 | /* In the case of DW_TAG_member, we should only be called for |
10986 | static const members. */ | |
10987 | if (die->tag == DW_TAG_member) | |
10988 | { | |
3863f96c DE |
10989 | /* dwarf2_add_field uses die_is_declaration, |
10990 | so we do the same. */ | |
254e6b9e DE |
10991 | gdb_assert (die_is_declaration (die, cu)); |
10992 | gdb_assert (attr); | |
10993 | } | |
c906108c SS |
10994 | if (attr) |
10995 | { | |
e7c27a73 | 10996 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 10997 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 10998 | if (!suppress_add) |
34eaf542 TT |
10999 | { |
11000 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 11001 | list_to_add = &global_symbols; |
34eaf542 | 11002 | else |
e37fd15a | 11003 | list_to_add = cu->list_in_scope; |
34eaf542 | 11004 | } |
c906108c SS |
11005 | break; |
11006 | } | |
e142c38c | 11007 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
11008 | if (attr) |
11009 | { | |
e7c27a73 | 11010 | var_decode_location (attr, sym, cu); |
e142c38c | 11011 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
11012 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
11013 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
11014 | && !dwarf2_per_objfile->has_section_at_zero) | |
11015 | { | |
11016 | /* When a static variable is eliminated by the linker, | |
11017 | the corresponding debug information is not stripped | |
11018 | out, but the variable address is set to null; | |
11019 | do not add such variables into symbol table. */ | |
11020 | } | |
11021 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 11022 | { |
f55ee35c JK |
11023 | /* Workaround gfortran PR debug/40040 - it uses |
11024 | DW_AT_location for variables in -fPIC libraries which may | |
11025 | get overriden by other libraries/executable and get | |
11026 | a different address. Resolve it by the minimal symbol | |
11027 | which may come from inferior's executable using copy | |
11028 | relocation. Make this workaround only for gfortran as for | |
11029 | other compilers GDB cannot guess the minimal symbol | |
11030 | Fortran mangling kind. */ | |
11031 | if (cu->language == language_fortran && die->parent | |
11032 | && die->parent->tag == DW_TAG_module | |
11033 | && cu->producer | |
11034 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
11035 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
11036 | ||
1c809c68 TT |
11037 | /* A variable with DW_AT_external is never static, |
11038 | but it may be block-scoped. */ | |
11039 | list_to_add = (cu->list_in_scope == &file_symbols | |
11040 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 11041 | } |
c906108c | 11042 | else |
e37fd15a | 11043 | list_to_add = cu->list_in_scope; |
c906108c SS |
11044 | } |
11045 | else | |
11046 | { | |
11047 | /* We do not know the address of this symbol. | |
c5aa993b JM |
11048 | If it is an external symbol and we have type information |
11049 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
11050 | The address of the variable will then be determined from | |
11051 | the minimal symbol table whenever the variable is | |
11052 | referenced. */ | |
e142c38c | 11053 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 11054 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 11055 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 11056 | { |
0fe7935b DJ |
11057 | /* A variable with DW_AT_external is never static, but it |
11058 | may be block-scoped. */ | |
11059 | list_to_add = (cu->list_in_scope == &file_symbols | |
11060 | ? &global_symbols : cu->list_in_scope); | |
11061 | ||
c906108c | 11062 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 11063 | } |
442ddf59 JK |
11064 | else if (!die_is_declaration (die, cu)) |
11065 | { | |
11066 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
11067 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
11068 | if (!suppress_add) |
11069 | list_to_add = cu->list_in_scope; | |
442ddf59 | 11070 | } |
c906108c SS |
11071 | } |
11072 | break; | |
11073 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
11074 | /* If we are inside a function, mark this as an argument. If |
11075 | not, we might be looking at an argument to an inlined function | |
11076 | when we do not have enough information to show inlined frames; | |
11077 | pretend it's a local variable in that case so that the user can | |
11078 | still see it. */ | |
11079 | if (context_stack_depth > 0 | |
11080 | && context_stack[context_stack_depth - 1].name != NULL) | |
11081 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 11082 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
11083 | if (attr) |
11084 | { | |
e7c27a73 | 11085 | var_decode_location (attr, sym, cu); |
c906108c | 11086 | } |
e142c38c | 11087 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
11088 | if (attr) |
11089 | { | |
e7c27a73 | 11090 | dwarf2_const_value (attr, sym, cu); |
c906108c | 11091 | } |
f346a30d PM |
11092 | attr = dwarf2_attr (die, DW_AT_variable_parameter, cu); |
11093 | if (attr && DW_UNSND (attr)) | |
11094 | { | |
11095 | struct type *ref_type; | |
11096 | ||
11097 | ref_type = lookup_reference_type (SYMBOL_TYPE (sym)); | |
11098 | SYMBOL_TYPE (sym) = ref_type; | |
11099 | } | |
11100 | ||
e37fd15a | 11101 | list_to_add = cu->list_in_scope; |
c906108c SS |
11102 | break; |
11103 | case DW_TAG_unspecified_parameters: | |
11104 | /* From varargs functions; gdb doesn't seem to have any | |
11105 | interest in this information, so just ignore it for now. | |
11106 | (FIXME?) */ | |
11107 | break; | |
34eaf542 TT |
11108 | case DW_TAG_template_type_param: |
11109 | suppress_add = 1; | |
11110 | /* Fall through. */ | |
c906108c | 11111 | case DW_TAG_class_type: |
680b30c7 | 11112 | case DW_TAG_interface_type: |
c906108c SS |
11113 | case DW_TAG_structure_type: |
11114 | case DW_TAG_union_type: | |
72019c9c | 11115 | case DW_TAG_set_type: |
c906108c SS |
11116 | case DW_TAG_enumeration_type: |
11117 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 11118 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 11119 | |
63d06c5c | 11120 | { |
987504bb | 11121 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
11122 | really ever be static objects: otherwise, if you try |
11123 | to, say, break of a class's method and you're in a file | |
11124 | which doesn't mention that class, it won't work unless | |
11125 | the check for all static symbols in lookup_symbol_aux | |
11126 | saves you. See the OtherFileClass tests in | |
11127 | gdb.c++/namespace.exp. */ | |
11128 | ||
e37fd15a | 11129 | if (!suppress_add) |
34eaf542 | 11130 | { |
34eaf542 TT |
11131 | list_to_add = (cu->list_in_scope == &file_symbols |
11132 | && (cu->language == language_cplus | |
11133 | || cu->language == language_java) | |
11134 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c | 11135 | |
64382290 TT |
11136 | /* The semantics of C++ state that "struct foo { |
11137 | ... }" also defines a typedef for "foo". A Java | |
11138 | class declaration also defines a typedef for the | |
11139 | class. */ | |
11140 | if (cu->language == language_cplus | |
11141 | || cu->language == language_java | |
11142 | || cu->language == language_ada) | |
11143 | { | |
11144 | /* The symbol's name is already allocated along | |
11145 | with this objfile, so we don't need to | |
11146 | duplicate it for the type. */ | |
11147 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
11148 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
11149 | } | |
63d06c5c DC |
11150 | } |
11151 | } | |
c906108c SS |
11152 | break; |
11153 | case DW_TAG_typedef: | |
63d06c5c DC |
11154 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
11155 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 11156 | list_to_add = cu->list_in_scope; |
63d06c5c | 11157 | break; |
c906108c | 11158 | case DW_TAG_base_type: |
a02abb62 | 11159 | case DW_TAG_subrange_type: |
c906108c | 11160 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 11161 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 11162 | list_to_add = cu->list_in_scope; |
c906108c SS |
11163 | break; |
11164 | case DW_TAG_enumerator: | |
e142c38c | 11165 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
11166 | if (attr) |
11167 | { | |
e7c27a73 | 11168 | dwarf2_const_value (attr, sym, cu); |
c906108c | 11169 | } |
63d06c5c DC |
11170 | { |
11171 | /* NOTE: carlton/2003-11-10: See comment above in the | |
11172 | DW_TAG_class_type, etc. block. */ | |
11173 | ||
e142c38c | 11174 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
11175 | && (cu->language == language_cplus |
11176 | || cu->language == language_java) | |
e142c38c | 11177 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 11178 | } |
c906108c | 11179 | break; |
5c4e30ca DC |
11180 | case DW_TAG_namespace: |
11181 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 11182 | list_to_add = &global_symbols; |
5c4e30ca | 11183 | break; |
c906108c SS |
11184 | default: |
11185 | /* Not a tag we recognize. Hopefully we aren't processing | |
11186 | trash data, but since we must specifically ignore things | |
11187 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 11188 | this point. */ |
e2e0b3e5 | 11189 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 11190 | dwarf_tag_name (die->tag)); |
c906108c SS |
11191 | break; |
11192 | } | |
df8a16a1 | 11193 | |
e37fd15a SW |
11194 | if (suppress_add) |
11195 | { | |
11196 | sym->hash_next = objfile->template_symbols; | |
11197 | objfile->template_symbols = sym; | |
11198 | list_to_add = NULL; | |
11199 | } | |
11200 | ||
11201 | if (list_to_add != NULL) | |
11202 | add_symbol_to_list (sym, list_to_add); | |
11203 | ||
df8a16a1 DJ |
11204 | /* For the benefit of old versions of GCC, check for anonymous |
11205 | namespaces based on the demangled name. */ | |
11206 | if (!processing_has_namespace_info | |
94af9270 | 11207 | && cu->language == language_cplus) |
df8a16a1 | 11208 | cp_scan_for_anonymous_namespaces (sym); |
c906108c SS |
11209 | } |
11210 | return (sym); | |
11211 | } | |
11212 | ||
34eaf542 TT |
11213 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
11214 | ||
11215 | static struct symbol * | |
11216 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
11217 | { | |
11218 | return new_symbol_full (die, type, cu, NULL); | |
11219 | } | |
11220 | ||
98bfdba5 PA |
11221 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
11222 | zero-extend it as appropriate for the symbol's type. The DWARF | |
11223 | standard (v4) is not entirely clear about the meaning of using | |
11224 | DW_FORM_dataN for a constant with a signed type, where the type is | |
11225 | wider than the data. The conclusion of a discussion on the DWARF | |
11226 | list was that this is unspecified. We choose to always zero-extend | |
11227 | because that is the interpretation long in use by GCC. */ | |
c906108c | 11228 | |
98bfdba5 PA |
11229 | static gdb_byte * |
11230 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
11231 | const char *name, struct obstack *obstack, | |
11232 | struct dwarf2_cu *cu, long *value, int bits) | |
c906108c | 11233 | { |
e7c27a73 | 11234 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
11235 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
11236 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
11237 | LONGEST l = DW_UNSND (attr); |
11238 | ||
11239 | if (bits < sizeof (*value) * 8) | |
11240 | { | |
11241 | l &= ((LONGEST) 1 << bits) - 1; | |
11242 | *value = l; | |
11243 | } | |
11244 | else if (bits == sizeof (*value) * 8) | |
11245 | *value = l; | |
11246 | else | |
11247 | { | |
11248 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
11249 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
11250 | return bytes; | |
11251 | } | |
11252 | ||
11253 | return NULL; | |
11254 | } | |
11255 | ||
11256 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
11257 | the value does not fit in *VALUE, set *BYTES - either already | |
11258 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
11259 | or, set *BATON, if we translated the constant to a location | |
11260 | expression. */ | |
11261 | ||
11262 | static void | |
11263 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
11264 | const char *name, struct obstack *obstack, | |
11265 | struct dwarf2_cu *cu, | |
11266 | long *value, gdb_byte **bytes, | |
11267 | struct dwarf2_locexpr_baton **baton) | |
11268 | { | |
11269 | struct objfile *objfile = cu->objfile; | |
11270 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 11271 | struct dwarf_block *blk; |
98bfdba5 PA |
11272 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
11273 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
11274 | ||
11275 | *value = 0; | |
11276 | *bytes = NULL; | |
11277 | *baton = NULL; | |
c906108c SS |
11278 | |
11279 | switch (attr->form) | |
11280 | { | |
11281 | case DW_FORM_addr: | |
ac56253d | 11282 | { |
ac56253d TT |
11283 | gdb_byte *data; |
11284 | ||
98bfdba5 PA |
11285 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
11286 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 11287 | cu_header->addr_size, |
98bfdba5 | 11288 | TYPE_LENGTH (type)); |
ac56253d TT |
11289 | /* Symbols of this form are reasonably rare, so we just |
11290 | piggyback on the existing location code rather than writing | |
11291 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
11292 | *baton = obstack_alloc (&objfile->objfile_obstack, |
11293 | sizeof (struct dwarf2_locexpr_baton)); | |
11294 | (*baton)->per_cu = cu->per_cu; | |
11295 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 11296 | |
98bfdba5 PA |
11297 | (*baton)->size = 2 + cu_header->addr_size; |
11298 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
11299 | (*baton)->data = data; | |
ac56253d TT |
11300 | |
11301 | data[0] = DW_OP_addr; | |
11302 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
11303 | byte_order, DW_ADDR (attr)); | |
11304 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 11305 | } |
c906108c | 11306 | break; |
4ac36638 | 11307 | case DW_FORM_string: |
93b5768b | 11308 | case DW_FORM_strp: |
98bfdba5 PA |
11309 | /* DW_STRING is already allocated on the objfile obstack, point |
11310 | directly to it. */ | |
11311 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 11312 | break; |
c906108c SS |
11313 | case DW_FORM_block1: |
11314 | case DW_FORM_block2: | |
11315 | case DW_FORM_block4: | |
11316 | case DW_FORM_block: | |
2dc7f7b3 | 11317 | case DW_FORM_exprloc: |
c906108c | 11318 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
11319 | if (TYPE_LENGTH (type) != blk->size) |
11320 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
11321 | TYPE_LENGTH (type)); | |
11322 | *bytes = blk->data; | |
c906108c | 11323 | break; |
2df3850c JM |
11324 | |
11325 | /* The DW_AT_const_value attributes are supposed to carry the | |
11326 | symbol's value "represented as it would be on the target | |
11327 | architecture." By the time we get here, it's already been | |
11328 | converted to host endianness, so we just need to sign- or | |
11329 | zero-extend it as appropriate. */ | |
11330 | case DW_FORM_data1: | |
3e43a32a MS |
11331 | *bytes = dwarf2_const_value_data (attr, type, name, |
11332 | obstack, cu, value, 8); | |
2df3850c | 11333 | break; |
c906108c | 11334 | case DW_FORM_data2: |
3e43a32a MS |
11335 | *bytes = dwarf2_const_value_data (attr, type, name, |
11336 | obstack, cu, value, 16); | |
2df3850c | 11337 | break; |
c906108c | 11338 | case DW_FORM_data4: |
3e43a32a MS |
11339 | *bytes = dwarf2_const_value_data (attr, type, name, |
11340 | obstack, cu, value, 32); | |
2df3850c | 11341 | break; |
c906108c | 11342 | case DW_FORM_data8: |
3e43a32a MS |
11343 | *bytes = dwarf2_const_value_data (attr, type, name, |
11344 | obstack, cu, value, 64); | |
2df3850c JM |
11345 | break; |
11346 | ||
c906108c | 11347 | case DW_FORM_sdata: |
98bfdba5 | 11348 | *value = DW_SND (attr); |
2df3850c JM |
11349 | break; |
11350 | ||
c906108c | 11351 | case DW_FORM_udata: |
98bfdba5 | 11352 | *value = DW_UNSND (attr); |
c906108c | 11353 | break; |
2df3850c | 11354 | |
c906108c | 11355 | default: |
4d3c2250 | 11356 | complaint (&symfile_complaints, |
e2e0b3e5 | 11357 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 11358 | dwarf_form_name (attr->form)); |
98bfdba5 | 11359 | *value = 0; |
c906108c SS |
11360 | break; |
11361 | } | |
11362 | } | |
11363 | ||
2df3850c | 11364 | |
98bfdba5 PA |
11365 | /* Copy constant value from an attribute to a symbol. */ |
11366 | ||
2df3850c | 11367 | static void |
98bfdba5 PA |
11368 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
11369 | struct dwarf2_cu *cu) | |
2df3850c | 11370 | { |
98bfdba5 PA |
11371 | struct objfile *objfile = cu->objfile; |
11372 | struct comp_unit_head *cu_header = &cu->header; | |
11373 | long value; | |
11374 | gdb_byte *bytes; | |
11375 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 11376 | |
98bfdba5 PA |
11377 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
11378 | SYMBOL_PRINT_NAME (sym), | |
11379 | &objfile->objfile_obstack, cu, | |
11380 | &value, &bytes, &baton); | |
2df3850c | 11381 | |
98bfdba5 PA |
11382 | if (baton != NULL) |
11383 | { | |
11384 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
11385 | SYMBOL_LOCATION_BATON (sym) = baton; | |
11386 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
11387 | } | |
11388 | else if (bytes != NULL) | |
11389 | { | |
11390 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
11391 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
11392 | } | |
11393 | else | |
11394 | { | |
11395 | SYMBOL_VALUE (sym) = value; | |
11396 | SYMBOL_CLASS (sym) = LOC_CONST; | |
11397 | } | |
2df3850c JM |
11398 | } |
11399 | ||
c906108c SS |
11400 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
11401 | ||
11402 | static struct type * | |
e7c27a73 | 11403 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11404 | { |
c906108c | 11405 | struct attribute *type_attr; |
c906108c | 11406 | |
e142c38c | 11407 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
11408 | if (!type_attr) |
11409 | { | |
11410 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 11411 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 11412 | } |
348e048f | 11413 | |
673bfd45 | 11414 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
11415 | } |
11416 | ||
b4ba55a1 JB |
11417 | /* True iff CU's producer generates GNAT Ada auxiliary information |
11418 | that allows to find parallel types through that information instead | |
11419 | of having to do expensive parallel lookups by type name. */ | |
11420 | ||
11421 | static int | |
11422 | need_gnat_info (struct dwarf2_cu *cu) | |
11423 | { | |
11424 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
11425 | of GNAT produces this auxiliary information, without any indication | |
11426 | that it is produced. Part of enhancing the FSF version of GNAT | |
11427 | to produce that information will be to put in place an indicator | |
11428 | that we can use in order to determine whether the descriptive type | |
11429 | info is available or not. One suggestion that has been made is | |
11430 | to use a new attribute, attached to the CU die. For now, assume | |
11431 | that the descriptive type info is not available. */ | |
11432 | return 0; | |
11433 | } | |
11434 | ||
b4ba55a1 JB |
11435 | /* Return the auxiliary type of the die in question using its |
11436 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
11437 | attribute is not present. */ | |
11438 | ||
11439 | static struct type * | |
11440 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
11441 | { | |
b4ba55a1 | 11442 | struct attribute *type_attr; |
b4ba55a1 JB |
11443 | |
11444 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
11445 | if (!type_attr) | |
11446 | return NULL; | |
11447 | ||
673bfd45 | 11448 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
11449 | } |
11450 | ||
11451 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
11452 | descriptive type accordingly. */ | |
11453 | ||
11454 | static void | |
11455 | set_descriptive_type (struct type *type, struct die_info *die, | |
11456 | struct dwarf2_cu *cu) | |
11457 | { | |
11458 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
11459 | ||
11460 | if (descriptive_type) | |
11461 | { | |
11462 | ALLOCATE_GNAT_AUX_TYPE (type); | |
11463 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
11464 | } | |
11465 | } | |
11466 | ||
c906108c SS |
11467 | /* Return the containing type of the die in question using its |
11468 | DW_AT_containing_type attribute. */ | |
11469 | ||
11470 | static struct type * | |
e7c27a73 | 11471 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11472 | { |
c906108c | 11473 | struct attribute *type_attr; |
c906108c | 11474 | |
e142c38c | 11475 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
11476 | if (!type_attr) |
11477 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
11478 | "[in module %s]"), cu->objfile->name); | |
11479 | ||
673bfd45 | 11480 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
11481 | } |
11482 | ||
673bfd45 DE |
11483 | /* Look up the type of DIE in CU using its type attribute ATTR. |
11484 | If there is no type substitute an error marker. */ | |
11485 | ||
c906108c | 11486 | static struct type * |
673bfd45 DE |
11487 | lookup_die_type (struct die_info *die, struct attribute *attr, |
11488 | struct dwarf2_cu *cu) | |
c906108c | 11489 | { |
f792889a DJ |
11490 | struct type *this_type; |
11491 | ||
673bfd45 DE |
11492 | /* First see if we have it cached. */ |
11493 | ||
11494 | if (is_ref_attr (attr)) | |
11495 | { | |
11496 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
11497 | ||
11498 | this_type = get_die_type_at_offset (offset, cu->per_cu); | |
11499 | } | |
55f1336d | 11500 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 DE |
11501 | { |
11502 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
11503 | struct dwarf2_cu *sig_cu; | |
11504 | unsigned int offset; | |
11505 | ||
11506 | /* sig_type will be NULL if the signatured type is missing from | |
11507 | the debug info. */ | |
11508 | if (sig_type == NULL) | |
11509 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
11510 | "at 0x%x [in module %s]"), | |
11511 | die->offset, cu->objfile->name); | |
11512 | ||
11513 | gdb_assert (sig_type->per_cu.from_debug_types); | |
11514 | offset = sig_type->offset + sig_type->type_offset; | |
11515 | this_type = get_die_type_at_offset (offset, &sig_type->per_cu); | |
11516 | } | |
11517 | else | |
11518 | { | |
11519 | dump_die_for_error (die); | |
11520 | error (_("Dwarf Error: Bad type attribute %s [in module %s]"), | |
11521 | dwarf_attr_name (attr->name), cu->objfile->name); | |
11522 | } | |
11523 | ||
11524 | /* If not cached we need to read it in. */ | |
11525 | ||
11526 | if (this_type == NULL) | |
11527 | { | |
11528 | struct die_info *type_die; | |
11529 | struct dwarf2_cu *type_cu = cu; | |
11530 | ||
11531 | type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
11532 | /* If the type is cached, we should have found it above. */ | |
11533 | gdb_assert (get_die_type (type_die, type_cu) == NULL); | |
11534 | this_type = read_type_die_1 (type_die, type_cu); | |
11535 | } | |
11536 | ||
11537 | /* If we still don't have a type use an error marker. */ | |
11538 | ||
11539 | if (this_type == NULL) | |
c906108c | 11540 | { |
b00fdb78 TT |
11541 | char *message, *saved; |
11542 | ||
11543 | /* read_type_die already issued a complaint. */ | |
11544 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
11545 | cu->objfile->name, | |
11546 | cu->header.offset, | |
11547 | die->offset); | |
11548 | saved = obstack_copy0 (&cu->objfile->objfile_obstack, | |
11549 | message, strlen (message)); | |
11550 | xfree (message); | |
11551 | ||
11552 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, cu->objfile); | |
c906108c | 11553 | } |
673bfd45 | 11554 | |
f792889a | 11555 | return this_type; |
c906108c SS |
11556 | } |
11557 | ||
673bfd45 DE |
11558 | /* Return the type in DIE, CU. |
11559 | Returns NULL for invalid types. | |
11560 | ||
11561 | This first does a lookup in the appropriate type_hash table, | |
11562 | and only reads the die in if necessary. | |
11563 | ||
11564 | NOTE: This can be called when reading in partial or full symbols. */ | |
11565 | ||
f792889a | 11566 | static struct type * |
e7c27a73 | 11567 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11568 | { |
f792889a DJ |
11569 | struct type *this_type; |
11570 | ||
11571 | this_type = get_die_type (die, cu); | |
11572 | if (this_type) | |
11573 | return this_type; | |
11574 | ||
673bfd45 DE |
11575 | return read_type_die_1 (die, cu); |
11576 | } | |
11577 | ||
11578 | /* Read the type in DIE, CU. | |
11579 | Returns NULL for invalid types. */ | |
11580 | ||
11581 | static struct type * | |
11582 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
11583 | { | |
11584 | struct type *this_type = NULL; | |
11585 | ||
c906108c SS |
11586 | switch (die->tag) |
11587 | { | |
11588 | case DW_TAG_class_type: | |
680b30c7 | 11589 | case DW_TAG_interface_type: |
c906108c SS |
11590 | case DW_TAG_structure_type: |
11591 | case DW_TAG_union_type: | |
f792889a | 11592 | this_type = read_structure_type (die, cu); |
c906108c SS |
11593 | break; |
11594 | case DW_TAG_enumeration_type: | |
f792889a | 11595 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
11596 | break; |
11597 | case DW_TAG_subprogram: | |
11598 | case DW_TAG_subroutine_type: | |
edb3359d | 11599 | case DW_TAG_inlined_subroutine: |
f792889a | 11600 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
11601 | break; |
11602 | case DW_TAG_array_type: | |
f792889a | 11603 | this_type = read_array_type (die, cu); |
c906108c | 11604 | break; |
72019c9c | 11605 | case DW_TAG_set_type: |
f792889a | 11606 | this_type = read_set_type (die, cu); |
72019c9c | 11607 | break; |
c906108c | 11608 | case DW_TAG_pointer_type: |
f792889a | 11609 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
11610 | break; |
11611 | case DW_TAG_ptr_to_member_type: | |
f792889a | 11612 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
11613 | break; |
11614 | case DW_TAG_reference_type: | |
f792889a | 11615 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
11616 | break; |
11617 | case DW_TAG_const_type: | |
f792889a | 11618 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
11619 | break; |
11620 | case DW_TAG_volatile_type: | |
f792889a | 11621 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
11622 | break; |
11623 | case DW_TAG_string_type: | |
f792889a | 11624 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
11625 | break; |
11626 | case DW_TAG_typedef: | |
f792889a | 11627 | this_type = read_typedef (die, cu); |
c906108c | 11628 | break; |
a02abb62 | 11629 | case DW_TAG_subrange_type: |
f792889a | 11630 | this_type = read_subrange_type (die, cu); |
a02abb62 | 11631 | break; |
c906108c | 11632 | case DW_TAG_base_type: |
f792889a | 11633 | this_type = read_base_type (die, cu); |
c906108c | 11634 | break; |
81a17f79 | 11635 | case DW_TAG_unspecified_type: |
f792889a | 11636 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 11637 | break; |
0114d602 DJ |
11638 | case DW_TAG_namespace: |
11639 | this_type = read_namespace_type (die, cu); | |
11640 | break; | |
f55ee35c JK |
11641 | case DW_TAG_module: |
11642 | this_type = read_module_type (die, cu); | |
11643 | break; | |
c906108c | 11644 | default: |
3e43a32a MS |
11645 | complaint (&symfile_complaints, |
11646 | _("unexpected tag in read_type_die: '%s'"), | |
4d3c2250 | 11647 | dwarf_tag_name (die->tag)); |
c906108c SS |
11648 | break; |
11649 | } | |
63d06c5c | 11650 | |
f792889a | 11651 | return this_type; |
63d06c5c DC |
11652 | } |
11653 | ||
abc72ce4 DE |
11654 | /* See if we can figure out if the class lives in a namespace. We do |
11655 | this by looking for a member function; its demangled name will | |
11656 | contain namespace info, if there is any. | |
11657 | Return the computed name or NULL. | |
11658 | Space for the result is allocated on the objfile's obstack. | |
11659 | This is the full-die version of guess_partial_die_structure_name. | |
11660 | In this case we know DIE has no useful parent. */ | |
11661 | ||
11662 | static char * | |
11663 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
11664 | { | |
11665 | struct die_info *spec_die; | |
11666 | struct dwarf2_cu *spec_cu; | |
11667 | struct die_info *child; | |
11668 | ||
11669 | spec_cu = cu; | |
11670 | spec_die = die_specification (die, &spec_cu); | |
11671 | if (spec_die != NULL) | |
11672 | { | |
11673 | die = spec_die; | |
11674 | cu = spec_cu; | |
11675 | } | |
11676 | ||
11677 | for (child = die->child; | |
11678 | child != NULL; | |
11679 | child = child->sibling) | |
11680 | { | |
11681 | if (child->tag == DW_TAG_subprogram) | |
11682 | { | |
11683 | struct attribute *attr; | |
11684 | ||
11685 | attr = dwarf2_attr (child, DW_AT_linkage_name, cu); | |
11686 | if (attr == NULL) | |
11687 | attr = dwarf2_attr (child, DW_AT_MIPS_linkage_name, cu); | |
11688 | if (attr != NULL) | |
11689 | { | |
11690 | char *actual_name | |
11691 | = language_class_name_from_physname (cu->language_defn, | |
11692 | DW_STRING (attr)); | |
11693 | char *name = NULL; | |
11694 | ||
11695 | if (actual_name != NULL) | |
11696 | { | |
11697 | char *die_name = dwarf2_name (die, cu); | |
11698 | ||
11699 | if (die_name != NULL | |
11700 | && strcmp (die_name, actual_name) != 0) | |
11701 | { | |
11702 | /* Strip off the class name from the full name. | |
11703 | We want the prefix. */ | |
11704 | int die_name_len = strlen (die_name); | |
11705 | int actual_name_len = strlen (actual_name); | |
11706 | ||
11707 | /* Test for '::' as a sanity check. */ | |
11708 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
11709 | && actual_name[actual_name_len |
11710 | - die_name_len - 1] == ':') | |
abc72ce4 DE |
11711 | name = |
11712 | obsavestring (actual_name, | |
11713 | actual_name_len - die_name_len - 2, | |
11714 | &cu->objfile->objfile_obstack); | |
11715 | } | |
11716 | } | |
11717 | xfree (actual_name); | |
11718 | return name; | |
11719 | } | |
11720 | } | |
11721 | } | |
11722 | ||
11723 | return NULL; | |
11724 | } | |
11725 | ||
fdde2d81 | 11726 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 11727 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 11728 | |
0114d602 DJ |
11729 | For example, if we're within the method foo() in the following |
11730 | code: | |
11731 | ||
11732 | namespace N { | |
11733 | class C { | |
11734 | void foo () { | |
11735 | } | |
11736 | }; | |
11737 | } | |
11738 | ||
11739 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
11740 | |
11741 | static char * | |
e142c38c | 11742 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 11743 | { |
0114d602 DJ |
11744 | struct die_info *parent, *spec_die; |
11745 | struct dwarf2_cu *spec_cu; | |
11746 | struct type *parent_type; | |
63d06c5c | 11747 | |
f55ee35c JK |
11748 | if (cu->language != language_cplus && cu->language != language_java |
11749 | && cu->language != language_fortran) | |
0114d602 DJ |
11750 | return ""; |
11751 | ||
11752 | /* We have to be careful in the presence of DW_AT_specification. | |
11753 | For example, with GCC 3.4, given the code | |
11754 | ||
11755 | namespace N { | |
11756 | void foo() { | |
11757 | // Definition of N::foo. | |
11758 | } | |
11759 | } | |
11760 | ||
11761 | then we'll have a tree of DIEs like this: | |
11762 | ||
11763 | 1: DW_TAG_compile_unit | |
11764 | 2: DW_TAG_namespace // N | |
11765 | 3: DW_TAG_subprogram // declaration of N::foo | |
11766 | 4: DW_TAG_subprogram // definition of N::foo | |
11767 | DW_AT_specification // refers to die #3 | |
11768 | ||
11769 | Thus, when processing die #4, we have to pretend that we're in | |
11770 | the context of its DW_AT_specification, namely the contex of die | |
11771 | #3. */ | |
11772 | spec_cu = cu; | |
11773 | spec_die = die_specification (die, &spec_cu); | |
11774 | if (spec_die == NULL) | |
11775 | parent = die->parent; | |
11776 | else | |
63d06c5c | 11777 | { |
0114d602 DJ |
11778 | parent = spec_die->parent; |
11779 | cu = spec_cu; | |
63d06c5c | 11780 | } |
0114d602 DJ |
11781 | |
11782 | if (parent == NULL) | |
11783 | return ""; | |
98bfdba5 PA |
11784 | else if (parent->building_fullname) |
11785 | { | |
11786 | const char *name; | |
11787 | const char *parent_name; | |
11788 | ||
11789 | /* It has been seen on RealView 2.2 built binaries, | |
11790 | DW_TAG_template_type_param types actually _defined_ as | |
11791 | children of the parent class: | |
11792 | ||
11793 | enum E {}; | |
11794 | template class <class Enum> Class{}; | |
11795 | Class<enum E> class_e; | |
11796 | ||
11797 | 1: DW_TAG_class_type (Class) | |
11798 | 2: DW_TAG_enumeration_type (E) | |
11799 | 3: DW_TAG_enumerator (enum1:0) | |
11800 | 3: DW_TAG_enumerator (enum2:1) | |
11801 | ... | |
11802 | 2: DW_TAG_template_type_param | |
11803 | DW_AT_type DW_FORM_ref_udata (E) | |
11804 | ||
11805 | Besides being broken debug info, it can put GDB into an | |
11806 | infinite loop. Consider: | |
11807 | ||
11808 | When we're building the full name for Class<E>, we'll start | |
11809 | at Class, and go look over its template type parameters, | |
11810 | finding E. We'll then try to build the full name of E, and | |
11811 | reach here. We're now trying to build the full name of E, | |
11812 | and look over the parent DIE for containing scope. In the | |
11813 | broken case, if we followed the parent DIE of E, we'd again | |
11814 | find Class, and once again go look at its template type | |
11815 | arguments, etc., etc. Simply don't consider such parent die | |
11816 | as source-level parent of this die (it can't be, the language | |
11817 | doesn't allow it), and break the loop here. */ | |
11818 | name = dwarf2_name (die, cu); | |
11819 | parent_name = dwarf2_name (parent, cu); | |
11820 | complaint (&symfile_complaints, | |
11821 | _("template param type '%s' defined within parent '%s'"), | |
11822 | name ? name : "<unknown>", | |
11823 | parent_name ? parent_name : "<unknown>"); | |
11824 | return ""; | |
11825 | } | |
63d06c5c | 11826 | else |
0114d602 DJ |
11827 | switch (parent->tag) |
11828 | { | |
63d06c5c | 11829 | case DW_TAG_namespace: |
0114d602 | 11830 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
11831 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
11832 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
11833 | Work around this problem here. */ | |
11834 | if (cu->language == language_cplus | |
11835 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
11836 | return ""; | |
0114d602 DJ |
11837 | /* We give a name to even anonymous namespaces. */ |
11838 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 11839 | case DW_TAG_class_type: |
680b30c7 | 11840 | case DW_TAG_interface_type: |
63d06c5c | 11841 | case DW_TAG_structure_type: |
0114d602 | 11842 | case DW_TAG_union_type: |
f55ee35c | 11843 | case DW_TAG_module: |
0114d602 DJ |
11844 | parent_type = read_type_die (parent, cu); |
11845 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
11846 | return TYPE_TAG_NAME (parent_type); | |
11847 | else | |
11848 | /* An anonymous structure is only allowed non-static data | |
11849 | members; no typedefs, no member functions, et cetera. | |
11850 | So it does not need a prefix. */ | |
11851 | return ""; | |
abc72ce4 DE |
11852 | case DW_TAG_compile_unit: |
11853 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ | |
11854 | if (cu->language == language_cplus | |
11855 | && dwarf2_per_objfile->types.asection != NULL | |
11856 | && die->child != NULL | |
11857 | && (die->tag == DW_TAG_class_type | |
11858 | || die->tag == DW_TAG_structure_type | |
11859 | || die->tag == DW_TAG_union_type)) | |
11860 | { | |
11861 | char *name = guess_full_die_structure_name (die, cu); | |
11862 | if (name != NULL) | |
11863 | return name; | |
11864 | } | |
11865 | return ""; | |
63d06c5c | 11866 | default: |
8176b9b8 | 11867 | return determine_prefix (parent, cu); |
63d06c5c | 11868 | } |
63d06c5c DC |
11869 | } |
11870 | ||
3e43a32a MS |
11871 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
11872 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
11873 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
11874 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
11875 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 11876 | |
f55ee35c | 11877 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
11878 | |
11879 | static char * | |
f55ee35c JK |
11880 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
11881 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 11882 | { |
f55ee35c | 11883 | const char *lead = ""; |
5c315b68 | 11884 | const char *sep; |
63d06c5c | 11885 | |
3e43a32a MS |
11886 | if (suffix == NULL || suffix[0] == '\0' |
11887 | || prefix == NULL || prefix[0] == '\0') | |
987504bb JJ |
11888 | sep = ""; |
11889 | else if (cu->language == language_java) | |
11890 | sep = "."; | |
f55ee35c JK |
11891 | else if (cu->language == language_fortran && physname) |
11892 | { | |
11893 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
11894 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
11895 | ||
11896 | lead = "__"; | |
11897 | sep = "_MOD_"; | |
11898 | } | |
987504bb JJ |
11899 | else |
11900 | sep = "::"; | |
63d06c5c | 11901 | |
6dd47d34 DE |
11902 | if (prefix == NULL) |
11903 | prefix = ""; | |
11904 | if (suffix == NULL) | |
11905 | suffix = ""; | |
11906 | ||
987504bb JJ |
11907 | if (obs == NULL) |
11908 | { | |
3e43a32a MS |
11909 | char *retval |
11910 | = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 11911 | |
f55ee35c JK |
11912 | strcpy (retval, lead); |
11913 | strcat (retval, prefix); | |
6dd47d34 DE |
11914 | strcat (retval, sep); |
11915 | strcat (retval, suffix); | |
63d06c5c DC |
11916 | return retval; |
11917 | } | |
987504bb JJ |
11918 | else |
11919 | { | |
11920 | /* We have an obstack. */ | |
f55ee35c | 11921 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 11922 | } |
63d06c5c DC |
11923 | } |
11924 | ||
c906108c SS |
11925 | /* Return sibling of die, NULL if no sibling. */ |
11926 | ||
f9aca02d | 11927 | static struct die_info * |
fba45db2 | 11928 | sibling_die (struct die_info *die) |
c906108c | 11929 | { |
639d11d3 | 11930 | return die->sibling; |
c906108c SS |
11931 | } |
11932 | ||
71c25dea TT |
11933 | /* Get name of a die, return NULL if not found. */ |
11934 | ||
11935 | static char * | |
11936 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
11937 | struct obstack *obstack) | |
11938 | { | |
11939 | if (name && cu->language == language_cplus) | |
11940 | { | |
11941 | char *canon_name = cp_canonicalize_string (name); | |
11942 | ||
11943 | if (canon_name != NULL) | |
11944 | { | |
11945 | if (strcmp (canon_name, name) != 0) | |
11946 | name = obsavestring (canon_name, strlen (canon_name), | |
11947 | obstack); | |
11948 | xfree (canon_name); | |
11949 | } | |
11950 | } | |
11951 | ||
11952 | return name; | |
c906108c SS |
11953 | } |
11954 | ||
9219021c DC |
11955 | /* Get name of a die, return NULL if not found. */ |
11956 | ||
11957 | static char * | |
e142c38c | 11958 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
11959 | { |
11960 | struct attribute *attr; | |
11961 | ||
e142c38c | 11962 | attr = dwarf2_attr (die, DW_AT_name, cu); |
71c25dea TT |
11963 | if (!attr || !DW_STRING (attr)) |
11964 | return NULL; | |
11965 | ||
11966 | switch (die->tag) | |
11967 | { | |
11968 | case DW_TAG_compile_unit: | |
11969 | /* Compilation units have a DW_AT_name that is a filename, not | |
11970 | a source language identifier. */ | |
11971 | case DW_TAG_enumeration_type: | |
11972 | case DW_TAG_enumerator: | |
11973 | /* These tags always have simple identifiers already; no need | |
11974 | to canonicalize them. */ | |
11975 | return DW_STRING (attr); | |
907af001 | 11976 | |
418835cc KS |
11977 | case DW_TAG_subprogram: |
11978 | /* Java constructors will all be named "<init>", so return | |
11979 | the class name when we see this special case. */ | |
11980 | if (cu->language == language_java | |
11981 | && DW_STRING (attr) != NULL | |
11982 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
11983 | { | |
11984 | struct dwarf2_cu *spec_cu = cu; | |
11985 | struct die_info *spec_die; | |
11986 | ||
11987 | /* GCJ will output '<init>' for Java constructor names. | |
11988 | For this special case, return the name of the parent class. */ | |
11989 | ||
11990 | /* GCJ may output suprogram DIEs with AT_specification set. | |
11991 | If so, use the name of the specified DIE. */ | |
11992 | spec_die = die_specification (die, &spec_cu); | |
11993 | if (spec_die != NULL) | |
11994 | return dwarf2_name (spec_die, spec_cu); | |
11995 | ||
11996 | do | |
11997 | { | |
11998 | die = die->parent; | |
11999 | if (die->tag == DW_TAG_class_type) | |
12000 | return dwarf2_name (die, cu); | |
12001 | } | |
12002 | while (die->tag != DW_TAG_compile_unit); | |
12003 | } | |
907af001 UW |
12004 | break; |
12005 | ||
12006 | case DW_TAG_class_type: | |
12007 | case DW_TAG_interface_type: | |
12008 | case DW_TAG_structure_type: | |
12009 | case DW_TAG_union_type: | |
12010 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
12011 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
12012 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
12013 | and GCC 4.4. We work around this problem by ignoring these. */ | |
12014 | if (strncmp (DW_STRING (attr), "._", 2) == 0 | |
12015 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0) | |
12016 | return NULL; | |
12017 | break; | |
12018 | ||
71c25dea | 12019 | default: |
907af001 UW |
12020 | break; |
12021 | } | |
12022 | ||
12023 | if (!DW_STRING_IS_CANONICAL (attr)) | |
12024 | { | |
12025 | DW_STRING (attr) | |
12026 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
12027 | &cu->objfile->objfile_obstack); | |
12028 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 12029 | } |
907af001 | 12030 | return DW_STRING (attr); |
9219021c DC |
12031 | } |
12032 | ||
12033 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
12034 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
12035 | containing the return value on output. */ | |
9219021c DC |
12036 | |
12037 | static struct die_info * | |
f2f0e013 | 12038 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
12039 | { |
12040 | struct attribute *attr; | |
9219021c | 12041 | |
f2f0e013 | 12042 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
12043 | if (attr == NULL) |
12044 | return NULL; | |
12045 | ||
f2f0e013 | 12046 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
12047 | } |
12048 | ||
c906108c SS |
12049 | /* Convert a DIE tag into its string name. */ |
12050 | ||
12051 | static char * | |
aa1ee363 | 12052 | dwarf_tag_name (unsigned tag) |
c906108c SS |
12053 | { |
12054 | switch (tag) | |
12055 | { | |
12056 | case DW_TAG_padding: | |
12057 | return "DW_TAG_padding"; | |
12058 | case DW_TAG_array_type: | |
12059 | return "DW_TAG_array_type"; | |
12060 | case DW_TAG_class_type: | |
12061 | return "DW_TAG_class_type"; | |
12062 | case DW_TAG_entry_point: | |
12063 | return "DW_TAG_entry_point"; | |
12064 | case DW_TAG_enumeration_type: | |
12065 | return "DW_TAG_enumeration_type"; | |
12066 | case DW_TAG_formal_parameter: | |
12067 | return "DW_TAG_formal_parameter"; | |
12068 | case DW_TAG_imported_declaration: | |
12069 | return "DW_TAG_imported_declaration"; | |
12070 | case DW_TAG_label: | |
12071 | return "DW_TAG_label"; | |
12072 | case DW_TAG_lexical_block: | |
12073 | return "DW_TAG_lexical_block"; | |
12074 | case DW_TAG_member: | |
12075 | return "DW_TAG_member"; | |
12076 | case DW_TAG_pointer_type: | |
12077 | return "DW_TAG_pointer_type"; | |
12078 | case DW_TAG_reference_type: | |
12079 | return "DW_TAG_reference_type"; | |
12080 | case DW_TAG_compile_unit: | |
12081 | return "DW_TAG_compile_unit"; | |
12082 | case DW_TAG_string_type: | |
12083 | return "DW_TAG_string_type"; | |
12084 | case DW_TAG_structure_type: | |
12085 | return "DW_TAG_structure_type"; | |
12086 | case DW_TAG_subroutine_type: | |
12087 | return "DW_TAG_subroutine_type"; | |
12088 | case DW_TAG_typedef: | |
12089 | return "DW_TAG_typedef"; | |
12090 | case DW_TAG_union_type: | |
12091 | return "DW_TAG_union_type"; | |
12092 | case DW_TAG_unspecified_parameters: | |
12093 | return "DW_TAG_unspecified_parameters"; | |
12094 | case DW_TAG_variant: | |
12095 | return "DW_TAG_variant"; | |
12096 | case DW_TAG_common_block: | |
12097 | return "DW_TAG_common_block"; | |
12098 | case DW_TAG_common_inclusion: | |
12099 | return "DW_TAG_common_inclusion"; | |
12100 | case DW_TAG_inheritance: | |
12101 | return "DW_TAG_inheritance"; | |
12102 | case DW_TAG_inlined_subroutine: | |
12103 | return "DW_TAG_inlined_subroutine"; | |
12104 | case DW_TAG_module: | |
12105 | return "DW_TAG_module"; | |
12106 | case DW_TAG_ptr_to_member_type: | |
12107 | return "DW_TAG_ptr_to_member_type"; | |
12108 | case DW_TAG_set_type: | |
12109 | return "DW_TAG_set_type"; | |
12110 | case DW_TAG_subrange_type: | |
12111 | return "DW_TAG_subrange_type"; | |
12112 | case DW_TAG_with_stmt: | |
12113 | return "DW_TAG_with_stmt"; | |
12114 | case DW_TAG_access_declaration: | |
12115 | return "DW_TAG_access_declaration"; | |
12116 | case DW_TAG_base_type: | |
12117 | return "DW_TAG_base_type"; | |
12118 | case DW_TAG_catch_block: | |
12119 | return "DW_TAG_catch_block"; | |
12120 | case DW_TAG_const_type: | |
12121 | return "DW_TAG_const_type"; | |
12122 | case DW_TAG_constant: | |
12123 | return "DW_TAG_constant"; | |
12124 | case DW_TAG_enumerator: | |
12125 | return "DW_TAG_enumerator"; | |
12126 | case DW_TAG_file_type: | |
12127 | return "DW_TAG_file_type"; | |
12128 | case DW_TAG_friend: | |
12129 | return "DW_TAG_friend"; | |
12130 | case DW_TAG_namelist: | |
12131 | return "DW_TAG_namelist"; | |
12132 | case DW_TAG_namelist_item: | |
12133 | return "DW_TAG_namelist_item"; | |
12134 | case DW_TAG_packed_type: | |
12135 | return "DW_TAG_packed_type"; | |
12136 | case DW_TAG_subprogram: | |
12137 | return "DW_TAG_subprogram"; | |
12138 | case DW_TAG_template_type_param: | |
12139 | return "DW_TAG_template_type_param"; | |
12140 | case DW_TAG_template_value_param: | |
12141 | return "DW_TAG_template_value_param"; | |
12142 | case DW_TAG_thrown_type: | |
12143 | return "DW_TAG_thrown_type"; | |
12144 | case DW_TAG_try_block: | |
12145 | return "DW_TAG_try_block"; | |
12146 | case DW_TAG_variant_part: | |
12147 | return "DW_TAG_variant_part"; | |
12148 | case DW_TAG_variable: | |
12149 | return "DW_TAG_variable"; | |
12150 | case DW_TAG_volatile_type: | |
12151 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
12152 | case DW_TAG_dwarf_procedure: |
12153 | return "DW_TAG_dwarf_procedure"; | |
12154 | case DW_TAG_restrict_type: | |
12155 | return "DW_TAG_restrict_type"; | |
12156 | case DW_TAG_interface_type: | |
12157 | return "DW_TAG_interface_type"; | |
12158 | case DW_TAG_namespace: | |
12159 | return "DW_TAG_namespace"; | |
12160 | case DW_TAG_imported_module: | |
12161 | return "DW_TAG_imported_module"; | |
12162 | case DW_TAG_unspecified_type: | |
12163 | return "DW_TAG_unspecified_type"; | |
12164 | case DW_TAG_partial_unit: | |
12165 | return "DW_TAG_partial_unit"; | |
12166 | case DW_TAG_imported_unit: | |
12167 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
12168 | case DW_TAG_condition: |
12169 | return "DW_TAG_condition"; | |
12170 | case DW_TAG_shared_type: | |
12171 | return "DW_TAG_shared_type"; | |
348e048f DE |
12172 | case DW_TAG_type_unit: |
12173 | return "DW_TAG_type_unit"; | |
c906108c SS |
12174 | case DW_TAG_MIPS_loop: |
12175 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
12176 | case DW_TAG_HP_array_descriptor: |
12177 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
12178 | case DW_TAG_format_label: |
12179 | return "DW_TAG_format_label"; | |
12180 | case DW_TAG_function_template: | |
12181 | return "DW_TAG_function_template"; | |
12182 | case DW_TAG_class_template: | |
12183 | return "DW_TAG_class_template"; | |
b7619582 GF |
12184 | case DW_TAG_GNU_BINCL: |
12185 | return "DW_TAG_GNU_BINCL"; | |
12186 | case DW_TAG_GNU_EINCL: | |
12187 | return "DW_TAG_GNU_EINCL"; | |
12188 | case DW_TAG_upc_shared_type: | |
12189 | return "DW_TAG_upc_shared_type"; | |
12190 | case DW_TAG_upc_strict_type: | |
12191 | return "DW_TAG_upc_strict_type"; | |
12192 | case DW_TAG_upc_relaxed_type: | |
12193 | return "DW_TAG_upc_relaxed_type"; | |
12194 | case DW_TAG_PGI_kanji_type: | |
12195 | return "DW_TAG_PGI_kanji_type"; | |
12196 | case DW_TAG_PGI_interface_block: | |
12197 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
12198 | default: |
12199 | return "DW_TAG_<unknown>"; | |
12200 | } | |
12201 | } | |
12202 | ||
12203 | /* Convert a DWARF attribute code into its string name. */ | |
12204 | ||
12205 | static char * | |
aa1ee363 | 12206 | dwarf_attr_name (unsigned attr) |
c906108c SS |
12207 | { |
12208 | switch (attr) | |
12209 | { | |
12210 | case DW_AT_sibling: | |
12211 | return "DW_AT_sibling"; | |
12212 | case DW_AT_location: | |
12213 | return "DW_AT_location"; | |
12214 | case DW_AT_name: | |
12215 | return "DW_AT_name"; | |
12216 | case DW_AT_ordering: | |
12217 | return "DW_AT_ordering"; | |
12218 | case DW_AT_subscr_data: | |
12219 | return "DW_AT_subscr_data"; | |
12220 | case DW_AT_byte_size: | |
12221 | return "DW_AT_byte_size"; | |
12222 | case DW_AT_bit_offset: | |
12223 | return "DW_AT_bit_offset"; | |
12224 | case DW_AT_bit_size: | |
12225 | return "DW_AT_bit_size"; | |
12226 | case DW_AT_element_list: | |
12227 | return "DW_AT_element_list"; | |
12228 | case DW_AT_stmt_list: | |
12229 | return "DW_AT_stmt_list"; | |
12230 | case DW_AT_low_pc: | |
12231 | return "DW_AT_low_pc"; | |
12232 | case DW_AT_high_pc: | |
12233 | return "DW_AT_high_pc"; | |
12234 | case DW_AT_language: | |
12235 | return "DW_AT_language"; | |
12236 | case DW_AT_member: | |
12237 | return "DW_AT_member"; | |
12238 | case DW_AT_discr: | |
12239 | return "DW_AT_discr"; | |
12240 | case DW_AT_discr_value: | |
12241 | return "DW_AT_discr_value"; | |
12242 | case DW_AT_visibility: | |
12243 | return "DW_AT_visibility"; | |
12244 | case DW_AT_import: | |
12245 | return "DW_AT_import"; | |
12246 | case DW_AT_string_length: | |
12247 | return "DW_AT_string_length"; | |
12248 | case DW_AT_common_reference: | |
12249 | return "DW_AT_common_reference"; | |
12250 | case DW_AT_comp_dir: | |
12251 | return "DW_AT_comp_dir"; | |
12252 | case DW_AT_const_value: | |
12253 | return "DW_AT_const_value"; | |
12254 | case DW_AT_containing_type: | |
12255 | return "DW_AT_containing_type"; | |
12256 | case DW_AT_default_value: | |
12257 | return "DW_AT_default_value"; | |
12258 | case DW_AT_inline: | |
12259 | return "DW_AT_inline"; | |
12260 | case DW_AT_is_optional: | |
12261 | return "DW_AT_is_optional"; | |
12262 | case DW_AT_lower_bound: | |
12263 | return "DW_AT_lower_bound"; | |
12264 | case DW_AT_producer: | |
12265 | return "DW_AT_producer"; | |
12266 | case DW_AT_prototyped: | |
12267 | return "DW_AT_prototyped"; | |
12268 | case DW_AT_return_addr: | |
12269 | return "DW_AT_return_addr"; | |
12270 | case DW_AT_start_scope: | |
12271 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
12272 | case DW_AT_bit_stride: |
12273 | return "DW_AT_bit_stride"; | |
c906108c SS |
12274 | case DW_AT_upper_bound: |
12275 | return "DW_AT_upper_bound"; | |
12276 | case DW_AT_abstract_origin: | |
12277 | return "DW_AT_abstract_origin"; | |
12278 | case DW_AT_accessibility: | |
12279 | return "DW_AT_accessibility"; | |
12280 | case DW_AT_address_class: | |
12281 | return "DW_AT_address_class"; | |
12282 | case DW_AT_artificial: | |
12283 | return "DW_AT_artificial"; | |
12284 | case DW_AT_base_types: | |
12285 | return "DW_AT_base_types"; | |
12286 | case DW_AT_calling_convention: | |
12287 | return "DW_AT_calling_convention"; | |
12288 | case DW_AT_count: | |
12289 | return "DW_AT_count"; | |
12290 | case DW_AT_data_member_location: | |
12291 | return "DW_AT_data_member_location"; | |
12292 | case DW_AT_decl_column: | |
12293 | return "DW_AT_decl_column"; | |
12294 | case DW_AT_decl_file: | |
12295 | return "DW_AT_decl_file"; | |
12296 | case DW_AT_decl_line: | |
12297 | return "DW_AT_decl_line"; | |
12298 | case DW_AT_declaration: | |
12299 | return "DW_AT_declaration"; | |
12300 | case DW_AT_discr_list: | |
12301 | return "DW_AT_discr_list"; | |
12302 | case DW_AT_encoding: | |
12303 | return "DW_AT_encoding"; | |
12304 | case DW_AT_external: | |
12305 | return "DW_AT_external"; | |
12306 | case DW_AT_frame_base: | |
12307 | return "DW_AT_frame_base"; | |
12308 | case DW_AT_friend: | |
12309 | return "DW_AT_friend"; | |
12310 | case DW_AT_identifier_case: | |
12311 | return "DW_AT_identifier_case"; | |
12312 | case DW_AT_macro_info: | |
12313 | return "DW_AT_macro_info"; | |
12314 | case DW_AT_namelist_items: | |
12315 | return "DW_AT_namelist_items"; | |
12316 | case DW_AT_priority: | |
12317 | return "DW_AT_priority"; | |
12318 | case DW_AT_segment: | |
12319 | return "DW_AT_segment"; | |
12320 | case DW_AT_specification: | |
12321 | return "DW_AT_specification"; | |
12322 | case DW_AT_static_link: | |
12323 | return "DW_AT_static_link"; | |
12324 | case DW_AT_type: | |
12325 | return "DW_AT_type"; | |
12326 | case DW_AT_use_location: | |
12327 | return "DW_AT_use_location"; | |
12328 | case DW_AT_variable_parameter: | |
12329 | return "DW_AT_variable_parameter"; | |
12330 | case DW_AT_virtuality: | |
12331 | return "DW_AT_virtuality"; | |
12332 | case DW_AT_vtable_elem_location: | |
12333 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 12334 | /* DWARF 3 values. */ |
d9fa45fe DC |
12335 | case DW_AT_allocated: |
12336 | return "DW_AT_allocated"; | |
12337 | case DW_AT_associated: | |
12338 | return "DW_AT_associated"; | |
12339 | case DW_AT_data_location: | |
12340 | return "DW_AT_data_location"; | |
09fa0d7c JK |
12341 | case DW_AT_byte_stride: |
12342 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
12343 | case DW_AT_entry_pc: |
12344 | return "DW_AT_entry_pc"; | |
12345 | case DW_AT_use_UTF8: | |
12346 | return "DW_AT_use_UTF8"; | |
12347 | case DW_AT_extension: | |
12348 | return "DW_AT_extension"; | |
12349 | case DW_AT_ranges: | |
12350 | return "DW_AT_ranges"; | |
12351 | case DW_AT_trampoline: | |
12352 | return "DW_AT_trampoline"; | |
12353 | case DW_AT_call_column: | |
12354 | return "DW_AT_call_column"; | |
12355 | case DW_AT_call_file: | |
12356 | return "DW_AT_call_file"; | |
12357 | case DW_AT_call_line: | |
12358 | return "DW_AT_call_line"; | |
b7619582 GF |
12359 | case DW_AT_description: |
12360 | return "DW_AT_description"; | |
12361 | case DW_AT_binary_scale: | |
12362 | return "DW_AT_binary_scale"; | |
12363 | case DW_AT_decimal_scale: | |
12364 | return "DW_AT_decimal_scale"; | |
12365 | case DW_AT_small: | |
12366 | return "DW_AT_small"; | |
12367 | case DW_AT_decimal_sign: | |
12368 | return "DW_AT_decimal_sign"; | |
12369 | case DW_AT_digit_count: | |
12370 | return "DW_AT_digit_count"; | |
12371 | case DW_AT_picture_string: | |
12372 | return "DW_AT_picture_string"; | |
12373 | case DW_AT_mutable: | |
12374 | return "DW_AT_mutable"; | |
12375 | case DW_AT_threads_scaled: | |
12376 | return "DW_AT_threads_scaled"; | |
12377 | case DW_AT_explicit: | |
12378 | return "DW_AT_explicit"; | |
12379 | case DW_AT_object_pointer: | |
12380 | return "DW_AT_object_pointer"; | |
12381 | case DW_AT_endianity: | |
12382 | return "DW_AT_endianity"; | |
12383 | case DW_AT_elemental: | |
12384 | return "DW_AT_elemental"; | |
12385 | case DW_AT_pure: | |
12386 | return "DW_AT_pure"; | |
12387 | case DW_AT_recursive: | |
12388 | return "DW_AT_recursive"; | |
348e048f DE |
12389 | /* DWARF 4 values. */ |
12390 | case DW_AT_signature: | |
12391 | return "DW_AT_signature"; | |
31ef98ae TT |
12392 | case DW_AT_linkage_name: |
12393 | return "DW_AT_linkage_name"; | |
b7619582 | 12394 | /* SGI/MIPS extensions. */ |
c764a876 | 12395 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
c906108c SS |
12396 | case DW_AT_MIPS_fde: |
12397 | return "DW_AT_MIPS_fde"; | |
c764a876 | 12398 | #endif |
c906108c SS |
12399 | case DW_AT_MIPS_loop_begin: |
12400 | return "DW_AT_MIPS_loop_begin"; | |
12401 | case DW_AT_MIPS_tail_loop_begin: | |
12402 | return "DW_AT_MIPS_tail_loop_begin"; | |
12403 | case DW_AT_MIPS_epilog_begin: | |
12404 | return "DW_AT_MIPS_epilog_begin"; | |
12405 | case DW_AT_MIPS_loop_unroll_factor: | |
12406 | return "DW_AT_MIPS_loop_unroll_factor"; | |
12407 | case DW_AT_MIPS_software_pipeline_depth: | |
12408 | return "DW_AT_MIPS_software_pipeline_depth"; | |
12409 | case DW_AT_MIPS_linkage_name: | |
12410 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
12411 | case DW_AT_MIPS_stride: |
12412 | return "DW_AT_MIPS_stride"; | |
12413 | case DW_AT_MIPS_abstract_name: | |
12414 | return "DW_AT_MIPS_abstract_name"; | |
12415 | case DW_AT_MIPS_clone_origin: | |
12416 | return "DW_AT_MIPS_clone_origin"; | |
12417 | case DW_AT_MIPS_has_inlines: | |
12418 | return "DW_AT_MIPS_has_inlines"; | |
b7619582 | 12419 | /* HP extensions. */ |
c764a876 | 12420 | #ifndef MIPS /* collides with DW_AT_MIPS_fde */ |
b7619582 GF |
12421 | case DW_AT_HP_block_index: |
12422 | return "DW_AT_HP_block_index"; | |
c764a876 | 12423 | #endif |
b7619582 GF |
12424 | case DW_AT_HP_unmodifiable: |
12425 | return "DW_AT_HP_unmodifiable"; | |
12426 | case DW_AT_HP_actuals_stmt_list: | |
12427 | return "DW_AT_HP_actuals_stmt_list"; | |
12428 | case DW_AT_HP_proc_per_section: | |
12429 | return "DW_AT_HP_proc_per_section"; | |
12430 | case DW_AT_HP_raw_data_ptr: | |
12431 | return "DW_AT_HP_raw_data_ptr"; | |
12432 | case DW_AT_HP_pass_by_reference: | |
12433 | return "DW_AT_HP_pass_by_reference"; | |
12434 | case DW_AT_HP_opt_level: | |
12435 | return "DW_AT_HP_opt_level"; | |
12436 | case DW_AT_HP_prof_version_id: | |
12437 | return "DW_AT_HP_prof_version_id"; | |
12438 | case DW_AT_HP_opt_flags: | |
12439 | return "DW_AT_HP_opt_flags"; | |
12440 | case DW_AT_HP_cold_region_low_pc: | |
12441 | return "DW_AT_HP_cold_region_low_pc"; | |
12442 | case DW_AT_HP_cold_region_high_pc: | |
12443 | return "DW_AT_HP_cold_region_high_pc"; | |
12444 | case DW_AT_HP_all_variables_modifiable: | |
12445 | return "DW_AT_HP_all_variables_modifiable"; | |
12446 | case DW_AT_HP_linkage_name: | |
12447 | return "DW_AT_HP_linkage_name"; | |
12448 | case DW_AT_HP_prof_flags: | |
12449 | return "DW_AT_HP_prof_flags"; | |
12450 | /* GNU extensions. */ | |
c906108c SS |
12451 | case DW_AT_sf_names: |
12452 | return "DW_AT_sf_names"; | |
12453 | case DW_AT_src_info: | |
12454 | return "DW_AT_src_info"; | |
12455 | case DW_AT_mac_info: | |
12456 | return "DW_AT_mac_info"; | |
12457 | case DW_AT_src_coords: | |
12458 | return "DW_AT_src_coords"; | |
12459 | case DW_AT_body_begin: | |
12460 | return "DW_AT_body_begin"; | |
12461 | case DW_AT_body_end: | |
12462 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
12463 | case DW_AT_GNU_vector: |
12464 | return "DW_AT_GNU_vector"; | |
2de00c64 DE |
12465 | case DW_AT_GNU_odr_signature: |
12466 | return "DW_AT_GNU_odr_signature"; | |
b7619582 GF |
12467 | /* VMS extensions. */ |
12468 | case DW_AT_VMS_rtnbeg_pd_address: | |
12469 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
12470 | /* UPC extension. */ | |
12471 | case DW_AT_upc_threads_scaled: | |
12472 | return "DW_AT_upc_threads_scaled"; | |
12473 | /* PGI (STMicroelectronics) extensions. */ | |
12474 | case DW_AT_PGI_lbase: | |
12475 | return "DW_AT_PGI_lbase"; | |
12476 | case DW_AT_PGI_soffset: | |
12477 | return "DW_AT_PGI_soffset"; | |
12478 | case DW_AT_PGI_lstride: | |
12479 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
12480 | default: |
12481 | return "DW_AT_<unknown>"; | |
12482 | } | |
12483 | } | |
12484 | ||
12485 | /* Convert a DWARF value form code into its string name. */ | |
12486 | ||
12487 | static char * | |
aa1ee363 | 12488 | dwarf_form_name (unsigned form) |
c906108c SS |
12489 | { |
12490 | switch (form) | |
12491 | { | |
12492 | case DW_FORM_addr: | |
12493 | return "DW_FORM_addr"; | |
12494 | case DW_FORM_block2: | |
12495 | return "DW_FORM_block2"; | |
12496 | case DW_FORM_block4: | |
12497 | return "DW_FORM_block4"; | |
12498 | case DW_FORM_data2: | |
12499 | return "DW_FORM_data2"; | |
12500 | case DW_FORM_data4: | |
12501 | return "DW_FORM_data4"; | |
12502 | case DW_FORM_data8: | |
12503 | return "DW_FORM_data8"; | |
12504 | case DW_FORM_string: | |
12505 | return "DW_FORM_string"; | |
12506 | case DW_FORM_block: | |
12507 | return "DW_FORM_block"; | |
12508 | case DW_FORM_block1: | |
12509 | return "DW_FORM_block1"; | |
12510 | case DW_FORM_data1: | |
12511 | return "DW_FORM_data1"; | |
12512 | case DW_FORM_flag: | |
12513 | return "DW_FORM_flag"; | |
12514 | case DW_FORM_sdata: | |
12515 | return "DW_FORM_sdata"; | |
12516 | case DW_FORM_strp: | |
12517 | return "DW_FORM_strp"; | |
12518 | case DW_FORM_udata: | |
12519 | return "DW_FORM_udata"; | |
12520 | case DW_FORM_ref_addr: | |
12521 | return "DW_FORM_ref_addr"; | |
12522 | case DW_FORM_ref1: | |
12523 | return "DW_FORM_ref1"; | |
12524 | case DW_FORM_ref2: | |
12525 | return "DW_FORM_ref2"; | |
12526 | case DW_FORM_ref4: | |
12527 | return "DW_FORM_ref4"; | |
12528 | case DW_FORM_ref8: | |
12529 | return "DW_FORM_ref8"; | |
12530 | case DW_FORM_ref_udata: | |
12531 | return "DW_FORM_ref_udata"; | |
12532 | case DW_FORM_indirect: | |
12533 | return "DW_FORM_indirect"; | |
348e048f DE |
12534 | case DW_FORM_sec_offset: |
12535 | return "DW_FORM_sec_offset"; | |
12536 | case DW_FORM_exprloc: | |
12537 | return "DW_FORM_exprloc"; | |
12538 | case DW_FORM_flag_present: | |
12539 | return "DW_FORM_flag_present"; | |
55f1336d TT |
12540 | case DW_FORM_ref_sig8: |
12541 | return "DW_FORM_ref_sig8"; | |
c906108c SS |
12542 | default: |
12543 | return "DW_FORM_<unknown>"; | |
12544 | } | |
12545 | } | |
12546 | ||
12547 | /* Convert a DWARF stack opcode into its string name. */ | |
12548 | ||
9eae7c52 | 12549 | const char * |
b1bfef65 | 12550 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
12551 | { |
12552 | switch (op) | |
12553 | { | |
12554 | case DW_OP_addr: | |
12555 | return "DW_OP_addr"; | |
12556 | case DW_OP_deref: | |
12557 | return "DW_OP_deref"; | |
12558 | case DW_OP_const1u: | |
12559 | return "DW_OP_const1u"; | |
12560 | case DW_OP_const1s: | |
12561 | return "DW_OP_const1s"; | |
12562 | case DW_OP_const2u: | |
12563 | return "DW_OP_const2u"; | |
12564 | case DW_OP_const2s: | |
12565 | return "DW_OP_const2s"; | |
12566 | case DW_OP_const4u: | |
12567 | return "DW_OP_const4u"; | |
12568 | case DW_OP_const4s: | |
12569 | return "DW_OP_const4s"; | |
12570 | case DW_OP_const8u: | |
12571 | return "DW_OP_const8u"; | |
12572 | case DW_OP_const8s: | |
12573 | return "DW_OP_const8s"; | |
12574 | case DW_OP_constu: | |
12575 | return "DW_OP_constu"; | |
12576 | case DW_OP_consts: | |
12577 | return "DW_OP_consts"; | |
12578 | case DW_OP_dup: | |
12579 | return "DW_OP_dup"; | |
12580 | case DW_OP_drop: | |
12581 | return "DW_OP_drop"; | |
12582 | case DW_OP_over: | |
12583 | return "DW_OP_over"; | |
12584 | case DW_OP_pick: | |
12585 | return "DW_OP_pick"; | |
12586 | case DW_OP_swap: | |
12587 | return "DW_OP_swap"; | |
12588 | case DW_OP_rot: | |
12589 | return "DW_OP_rot"; | |
12590 | case DW_OP_xderef: | |
12591 | return "DW_OP_xderef"; | |
12592 | case DW_OP_abs: | |
12593 | return "DW_OP_abs"; | |
12594 | case DW_OP_and: | |
12595 | return "DW_OP_and"; | |
12596 | case DW_OP_div: | |
12597 | return "DW_OP_div"; | |
12598 | case DW_OP_minus: | |
12599 | return "DW_OP_minus"; | |
12600 | case DW_OP_mod: | |
12601 | return "DW_OP_mod"; | |
12602 | case DW_OP_mul: | |
12603 | return "DW_OP_mul"; | |
12604 | case DW_OP_neg: | |
12605 | return "DW_OP_neg"; | |
12606 | case DW_OP_not: | |
12607 | return "DW_OP_not"; | |
12608 | case DW_OP_or: | |
12609 | return "DW_OP_or"; | |
12610 | case DW_OP_plus: | |
12611 | return "DW_OP_plus"; | |
12612 | case DW_OP_plus_uconst: | |
12613 | return "DW_OP_plus_uconst"; | |
12614 | case DW_OP_shl: | |
12615 | return "DW_OP_shl"; | |
12616 | case DW_OP_shr: | |
12617 | return "DW_OP_shr"; | |
12618 | case DW_OP_shra: | |
12619 | return "DW_OP_shra"; | |
12620 | case DW_OP_xor: | |
12621 | return "DW_OP_xor"; | |
12622 | case DW_OP_bra: | |
12623 | return "DW_OP_bra"; | |
12624 | case DW_OP_eq: | |
12625 | return "DW_OP_eq"; | |
12626 | case DW_OP_ge: | |
12627 | return "DW_OP_ge"; | |
12628 | case DW_OP_gt: | |
12629 | return "DW_OP_gt"; | |
12630 | case DW_OP_le: | |
12631 | return "DW_OP_le"; | |
12632 | case DW_OP_lt: | |
12633 | return "DW_OP_lt"; | |
12634 | case DW_OP_ne: | |
12635 | return "DW_OP_ne"; | |
12636 | case DW_OP_skip: | |
12637 | return "DW_OP_skip"; | |
12638 | case DW_OP_lit0: | |
12639 | return "DW_OP_lit0"; | |
12640 | case DW_OP_lit1: | |
12641 | return "DW_OP_lit1"; | |
12642 | case DW_OP_lit2: | |
12643 | return "DW_OP_lit2"; | |
12644 | case DW_OP_lit3: | |
12645 | return "DW_OP_lit3"; | |
12646 | case DW_OP_lit4: | |
12647 | return "DW_OP_lit4"; | |
12648 | case DW_OP_lit5: | |
12649 | return "DW_OP_lit5"; | |
12650 | case DW_OP_lit6: | |
12651 | return "DW_OP_lit6"; | |
12652 | case DW_OP_lit7: | |
12653 | return "DW_OP_lit7"; | |
12654 | case DW_OP_lit8: | |
12655 | return "DW_OP_lit8"; | |
12656 | case DW_OP_lit9: | |
12657 | return "DW_OP_lit9"; | |
12658 | case DW_OP_lit10: | |
12659 | return "DW_OP_lit10"; | |
12660 | case DW_OP_lit11: | |
12661 | return "DW_OP_lit11"; | |
12662 | case DW_OP_lit12: | |
12663 | return "DW_OP_lit12"; | |
12664 | case DW_OP_lit13: | |
12665 | return "DW_OP_lit13"; | |
12666 | case DW_OP_lit14: | |
12667 | return "DW_OP_lit14"; | |
12668 | case DW_OP_lit15: | |
12669 | return "DW_OP_lit15"; | |
12670 | case DW_OP_lit16: | |
12671 | return "DW_OP_lit16"; | |
12672 | case DW_OP_lit17: | |
12673 | return "DW_OP_lit17"; | |
12674 | case DW_OP_lit18: | |
12675 | return "DW_OP_lit18"; | |
12676 | case DW_OP_lit19: | |
12677 | return "DW_OP_lit19"; | |
12678 | case DW_OP_lit20: | |
12679 | return "DW_OP_lit20"; | |
12680 | case DW_OP_lit21: | |
12681 | return "DW_OP_lit21"; | |
12682 | case DW_OP_lit22: | |
12683 | return "DW_OP_lit22"; | |
12684 | case DW_OP_lit23: | |
12685 | return "DW_OP_lit23"; | |
12686 | case DW_OP_lit24: | |
12687 | return "DW_OP_lit24"; | |
12688 | case DW_OP_lit25: | |
12689 | return "DW_OP_lit25"; | |
12690 | case DW_OP_lit26: | |
12691 | return "DW_OP_lit26"; | |
12692 | case DW_OP_lit27: | |
12693 | return "DW_OP_lit27"; | |
12694 | case DW_OP_lit28: | |
12695 | return "DW_OP_lit28"; | |
12696 | case DW_OP_lit29: | |
12697 | return "DW_OP_lit29"; | |
12698 | case DW_OP_lit30: | |
12699 | return "DW_OP_lit30"; | |
12700 | case DW_OP_lit31: | |
12701 | return "DW_OP_lit31"; | |
12702 | case DW_OP_reg0: | |
12703 | return "DW_OP_reg0"; | |
12704 | case DW_OP_reg1: | |
12705 | return "DW_OP_reg1"; | |
12706 | case DW_OP_reg2: | |
12707 | return "DW_OP_reg2"; | |
12708 | case DW_OP_reg3: | |
12709 | return "DW_OP_reg3"; | |
12710 | case DW_OP_reg4: | |
12711 | return "DW_OP_reg4"; | |
12712 | case DW_OP_reg5: | |
12713 | return "DW_OP_reg5"; | |
12714 | case DW_OP_reg6: | |
12715 | return "DW_OP_reg6"; | |
12716 | case DW_OP_reg7: | |
12717 | return "DW_OP_reg7"; | |
12718 | case DW_OP_reg8: | |
12719 | return "DW_OP_reg8"; | |
12720 | case DW_OP_reg9: | |
12721 | return "DW_OP_reg9"; | |
12722 | case DW_OP_reg10: | |
12723 | return "DW_OP_reg10"; | |
12724 | case DW_OP_reg11: | |
12725 | return "DW_OP_reg11"; | |
12726 | case DW_OP_reg12: | |
12727 | return "DW_OP_reg12"; | |
12728 | case DW_OP_reg13: | |
12729 | return "DW_OP_reg13"; | |
12730 | case DW_OP_reg14: | |
12731 | return "DW_OP_reg14"; | |
12732 | case DW_OP_reg15: | |
12733 | return "DW_OP_reg15"; | |
12734 | case DW_OP_reg16: | |
12735 | return "DW_OP_reg16"; | |
12736 | case DW_OP_reg17: | |
12737 | return "DW_OP_reg17"; | |
12738 | case DW_OP_reg18: | |
12739 | return "DW_OP_reg18"; | |
12740 | case DW_OP_reg19: | |
12741 | return "DW_OP_reg19"; | |
12742 | case DW_OP_reg20: | |
12743 | return "DW_OP_reg20"; | |
12744 | case DW_OP_reg21: | |
12745 | return "DW_OP_reg21"; | |
12746 | case DW_OP_reg22: | |
12747 | return "DW_OP_reg22"; | |
12748 | case DW_OP_reg23: | |
12749 | return "DW_OP_reg23"; | |
12750 | case DW_OP_reg24: | |
12751 | return "DW_OP_reg24"; | |
12752 | case DW_OP_reg25: | |
12753 | return "DW_OP_reg25"; | |
12754 | case DW_OP_reg26: | |
12755 | return "DW_OP_reg26"; | |
12756 | case DW_OP_reg27: | |
12757 | return "DW_OP_reg27"; | |
12758 | case DW_OP_reg28: | |
12759 | return "DW_OP_reg28"; | |
12760 | case DW_OP_reg29: | |
12761 | return "DW_OP_reg29"; | |
12762 | case DW_OP_reg30: | |
12763 | return "DW_OP_reg30"; | |
12764 | case DW_OP_reg31: | |
12765 | return "DW_OP_reg31"; | |
12766 | case DW_OP_breg0: | |
12767 | return "DW_OP_breg0"; | |
12768 | case DW_OP_breg1: | |
12769 | return "DW_OP_breg1"; | |
12770 | case DW_OP_breg2: | |
12771 | return "DW_OP_breg2"; | |
12772 | case DW_OP_breg3: | |
12773 | return "DW_OP_breg3"; | |
12774 | case DW_OP_breg4: | |
12775 | return "DW_OP_breg4"; | |
12776 | case DW_OP_breg5: | |
12777 | return "DW_OP_breg5"; | |
12778 | case DW_OP_breg6: | |
12779 | return "DW_OP_breg6"; | |
12780 | case DW_OP_breg7: | |
12781 | return "DW_OP_breg7"; | |
12782 | case DW_OP_breg8: | |
12783 | return "DW_OP_breg8"; | |
12784 | case DW_OP_breg9: | |
12785 | return "DW_OP_breg9"; | |
12786 | case DW_OP_breg10: | |
12787 | return "DW_OP_breg10"; | |
12788 | case DW_OP_breg11: | |
12789 | return "DW_OP_breg11"; | |
12790 | case DW_OP_breg12: | |
12791 | return "DW_OP_breg12"; | |
12792 | case DW_OP_breg13: | |
12793 | return "DW_OP_breg13"; | |
12794 | case DW_OP_breg14: | |
12795 | return "DW_OP_breg14"; | |
12796 | case DW_OP_breg15: | |
12797 | return "DW_OP_breg15"; | |
12798 | case DW_OP_breg16: | |
12799 | return "DW_OP_breg16"; | |
12800 | case DW_OP_breg17: | |
12801 | return "DW_OP_breg17"; | |
12802 | case DW_OP_breg18: | |
12803 | return "DW_OP_breg18"; | |
12804 | case DW_OP_breg19: | |
12805 | return "DW_OP_breg19"; | |
12806 | case DW_OP_breg20: | |
12807 | return "DW_OP_breg20"; | |
12808 | case DW_OP_breg21: | |
12809 | return "DW_OP_breg21"; | |
12810 | case DW_OP_breg22: | |
12811 | return "DW_OP_breg22"; | |
12812 | case DW_OP_breg23: | |
12813 | return "DW_OP_breg23"; | |
12814 | case DW_OP_breg24: | |
12815 | return "DW_OP_breg24"; | |
12816 | case DW_OP_breg25: | |
12817 | return "DW_OP_breg25"; | |
12818 | case DW_OP_breg26: | |
12819 | return "DW_OP_breg26"; | |
12820 | case DW_OP_breg27: | |
12821 | return "DW_OP_breg27"; | |
12822 | case DW_OP_breg28: | |
12823 | return "DW_OP_breg28"; | |
12824 | case DW_OP_breg29: | |
12825 | return "DW_OP_breg29"; | |
12826 | case DW_OP_breg30: | |
12827 | return "DW_OP_breg30"; | |
12828 | case DW_OP_breg31: | |
12829 | return "DW_OP_breg31"; | |
12830 | case DW_OP_regx: | |
12831 | return "DW_OP_regx"; | |
12832 | case DW_OP_fbreg: | |
12833 | return "DW_OP_fbreg"; | |
12834 | case DW_OP_bregx: | |
12835 | return "DW_OP_bregx"; | |
12836 | case DW_OP_piece: | |
12837 | return "DW_OP_piece"; | |
12838 | case DW_OP_deref_size: | |
12839 | return "DW_OP_deref_size"; | |
12840 | case DW_OP_xderef_size: | |
12841 | return "DW_OP_xderef_size"; | |
12842 | case DW_OP_nop: | |
12843 | return "DW_OP_nop"; | |
b7619582 | 12844 | /* DWARF 3 extensions. */ |
ed348acc EZ |
12845 | case DW_OP_push_object_address: |
12846 | return "DW_OP_push_object_address"; | |
12847 | case DW_OP_call2: | |
12848 | return "DW_OP_call2"; | |
12849 | case DW_OP_call4: | |
12850 | return "DW_OP_call4"; | |
12851 | case DW_OP_call_ref: | |
12852 | return "DW_OP_call_ref"; | |
b7619582 GF |
12853 | case DW_OP_form_tls_address: |
12854 | return "DW_OP_form_tls_address"; | |
12855 | case DW_OP_call_frame_cfa: | |
12856 | return "DW_OP_call_frame_cfa"; | |
12857 | case DW_OP_bit_piece: | |
12858 | return "DW_OP_bit_piece"; | |
9eae7c52 TT |
12859 | /* DWARF 4 extensions. */ |
12860 | case DW_OP_implicit_value: | |
12861 | return "DW_OP_implicit_value"; | |
12862 | case DW_OP_stack_value: | |
12863 | return "DW_OP_stack_value"; | |
12864 | /* GNU extensions. */ | |
ed348acc EZ |
12865 | case DW_OP_GNU_push_tls_address: |
12866 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
12867 | case DW_OP_GNU_uninit: |
12868 | return "DW_OP_GNU_uninit"; | |
8cf6f0b1 TT |
12869 | case DW_OP_GNU_implicit_pointer: |
12870 | return "DW_OP_GNU_implicit_pointer"; | |
c906108c | 12871 | default: |
b1bfef65 | 12872 | return NULL; |
c906108c SS |
12873 | } |
12874 | } | |
12875 | ||
12876 | static char * | |
fba45db2 | 12877 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
12878 | { |
12879 | if (mybool) | |
12880 | return "TRUE"; | |
12881 | else | |
12882 | return "FALSE"; | |
12883 | } | |
12884 | ||
12885 | /* Convert a DWARF type code into its string name. */ | |
12886 | ||
12887 | static char * | |
aa1ee363 | 12888 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
12889 | { |
12890 | switch (enc) | |
12891 | { | |
b7619582 GF |
12892 | case DW_ATE_void: |
12893 | return "DW_ATE_void"; | |
c906108c SS |
12894 | case DW_ATE_address: |
12895 | return "DW_ATE_address"; | |
12896 | case DW_ATE_boolean: | |
12897 | return "DW_ATE_boolean"; | |
12898 | case DW_ATE_complex_float: | |
12899 | return "DW_ATE_complex_float"; | |
12900 | case DW_ATE_float: | |
12901 | return "DW_ATE_float"; | |
12902 | case DW_ATE_signed: | |
12903 | return "DW_ATE_signed"; | |
12904 | case DW_ATE_signed_char: | |
12905 | return "DW_ATE_signed_char"; | |
12906 | case DW_ATE_unsigned: | |
12907 | return "DW_ATE_unsigned"; | |
12908 | case DW_ATE_unsigned_char: | |
12909 | return "DW_ATE_unsigned_char"; | |
b7619582 | 12910 | /* DWARF 3. */ |
d9fa45fe DC |
12911 | case DW_ATE_imaginary_float: |
12912 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
12913 | case DW_ATE_packed_decimal: |
12914 | return "DW_ATE_packed_decimal"; | |
12915 | case DW_ATE_numeric_string: | |
12916 | return "DW_ATE_numeric_string"; | |
12917 | case DW_ATE_edited: | |
12918 | return "DW_ATE_edited"; | |
12919 | case DW_ATE_signed_fixed: | |
12920 | return "DW_ATE_signed_fixed"; | |
12921 | case DW_ATE_unsigned_fixed: | |
12922 | return "DW_ATE_unsigned_fixed"; | |
12923 | case DW_ATE_decimal_float: | |
12924 | return "DW_ATE_decimal_float"; | |
75079b2b TT |
12925 | /* DWARF 4. */ |
12926 | case DW_ATE_UTF: | |
12927 | return "DW_ATE_UTF"; | |
b7619582 GF |
12928 | /* HP extensions. */ |
12929 | case DW_ATE_HP_float80: | |
12930 | return "DW_ATE_HP_float80"; | |
12931 | case DW_ATE_HP_complex_float80: | |
12932 | return "DW_ATE_HP_complex_float80"; | |
12933 | case DW_ATE_HP_float128: | |
12934 | return "DW_ATE_HP_float128"; | |
12935 | case DW_ATE_HP_complex_float128: | |
12936 | return "DW_ATE_HP_complex_float128"; | |
12937 | case DW_ATE_HP_floathpintel: | |
12938 | return "DW_ATE_HP_floathpintel"; | |
12939 | case DW_ATE_HP_imaginary_float80: | |
12940 | return "DW_ATE_HP_imaginary_float80"; | |
12941 | case DW_ATE_HP_imaginary_float128: | |
12942 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
12943 | default: |
12944 | return "DW_ATE_<unknown>"; | |
12945 | } | |
12946 | } | |
12947 | ||
0963b4bd | 12948 | /* Convert a DWARF call frame info operation to its string name. */ |
c906108c SS |
12949 | |
12950 | #if 0 | |
12951 | static char * | |
aa1ee363 | 12952 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
12953 | { |
12954 | switch (cfi_opc) | |
12955 | { | |
12956 | case DW_CFA_advance_loc: | |
12957 | return "DW_CFA_advance_loc"; | |
12958 | case DW_CFA_offset: | |
12959 | return "DW_CFA_offset"; | |
12960 | case DW_CFA_restore: | |
12961 | return "DW_CFA_restore"; | |
12962 | case DW_CFA_nop: | |
12963 | return "DW_CFA_nop"; | |
12964 | case DW_CFA_set_loc: | |
12965 | return "DW_CFA_set_loc"; | |
12966 | case DW_CFA_advance_loc1: | |
12967 | return "DW_CFA_advance_loc1"; | |
12968 | case DW_CFA_advance_loc2: | |
12969 | return "DW_CFA_advance_loc2"; | |
12970 | case DW_CFA_advance_loc4: | |
12971 | return "DW_CFA_advance_loc4"; | |
12972 | case DW_CFA_offset_extended: | |
12973 | return "DW_CFA_offset_extended"; | |
12974 | case DW_CFA_restore_extended: | |
12975 | return "DW_CFA_restore_extended"; | |
12976 | case DW_CFA_undefined: | |
12977 | return "DW_CFA_undefined"; | |
12978 | case DW_CFA_same_value: | |
12979 | return "DW_CFA_same_value"; | |
12980 | case DW_CFA_register: | |
12981 | return "DW_CFA_register"; | |
12982 | case DW_CFA_remember_state: | |
12983 | return "DW_CFA_remember_state"; | |
12984 | case DW_CFA_restore_state: | |
12985 | return "DW_CFA_restore_state"; | |
12986 | case DW_CFA_def_cfa: | |
12987 | return "DW_CFA_def_cfa"; | |
12988 | case DW_CFA_def_cfa_register: | |
12989 | return "DW_CFA_def_cfa_register"; | |
12990 | case DW_CFA_def_cfa_offset: | |
12991 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 12992 | /* DWARF 3. */ |
985cb1a3 JM |
12993 | case DW_CFA_def_cfa_expression: |
12994 | return "DW_CFA_def_cfa_expression"; | |
12995 | case DW_CFA_expression: | |
12996 | return "DW_CFA_expression"; | |
12997 | case DW_CFA_offset_extended_sf: | |
12998 | return "DW_CFA_offset_extended_sf"; | |
12999 | case DW_CFA_def_cfa_sf: | |
13000 | return "DW_CFA_def_cfa_sf"; | |
13001 | case DW_CFA_def_cfa_offset_sf: | |
13002 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
13003 | case DW_CFA_val_offset: |
13004 | return "DW_CFA_val_offset"; | |
13005 | case DW_CFA_val_offset_sf: | |
13006 | return "DW_CFA_val_offset_sf"; | |
13007 | case DW_CFA_val_expression: | |
13008 | return "DW_CFA_val_expression"; | |
13009 | /* SGI/MIPS specific. */ | |
c906108c SS |
13010 | case DW_CFA_MIPS_advance_loc8: |
13011 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 13012 | /* GNU extensions. */ |
985cb1a3 JM |
13013 | case DW_CFA_GNU_window_save: |
13014 | return "DW_CFA_GNU_window_save"; | |
13015 | case DW_CFA_GNU_args_size: | |
13016 | return "DW_CFA_GNU_args_size"; | |
13017 | case DW_CFA_GNU_negative_offset_extended: | |
13018 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
13019 | default: |
13020 | return "DW_CFA_<unknown>"; | |
13021 | } | |
13022 | } | |
13023 | #endif | |
13024 | ||
f9aca02d | 13025 | static void |
d97bc12b | 13026 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
13027 | { |
13028 | unsigned int i; | |
13029 | ||
d97bc12b DE |
13030 | print_spaces (indent, f); |
13031 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 13032 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
13033 | |
13034 | if (die->parent != NULL) | |
13035 | { | |
13036 | print_spaces (indent, f); | |
13037 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
13038 | die->parent->offset); | |
13039 | } | |
13040 | ||
13041 | print_spaces (indent, f); | |
13042 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 13043 | dwarf_bool_name (die->child != NULL)); |
c906108c | 13044 | |
d97bc12b DE |
13045 | print_spaces (indent, f); |
13046 | fprintf_unfiltered (f, " attributes:\n"); | |
13047 | ||
c906108c SS |
13048 | for (i = 0; i < die->num_attrs; ++i) |
13049 | { | |
d97bc12b DE |
13050 | print_spaces (indent, f); |
13051 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
13052 | dwarf_attr_name (die->attrs[i].name), |
13053 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 13054 | |
c906108c SS |
13055 | switch (die->attrs[i].form) |
13056 | { | |
13057 | case DW_FORM_ref_addr: | |
13058 | case DW_FORM_addr: | |
d97bc12b | 13059 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 13060 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
13061 | break; |
13062 | case DW_FORM_block2: | |
13063 | case DW_FORM_block4: | |
13064 | case DW_FORM_block: | |
13065 | case DW_FORM_block1: | |
3e43a32a MS |
13066 | fprintf_unfiltered (f, "block: size %d", |
13067 | DW_BLOCK (&die->attrs[i])->size); | |
c906108c | 13068 | break; |
2dc7f7b3 TT |
13069 | case DW_FORM_exprloc: |
13070 | fprintf_unfiltered (f, "expression: size %u", | |
13071 | DW_BLOCK (&die->attrs[i])->size); | |
13072 | break; | |
10b3939b DJ |
13073 | case DW_FORM_ref1: |
13074 | case DW_FORM_ref2: | |
13075 | case DW_FORM_ref4: | |
d97bc12b | 13076 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
13077 | (long) (DW_ADDR (&die->attrs[i]))); |
13078 | break; | |
c906108c SS |
13079 | case DW_FORM_data1: |
13080 | case DW_FORM_data2: | |
13081 | case DW_FORM_data4: | |
ce5d95e1 | 13082 | case DW_FORM_data8: |
c906108c SS |
13083 | case DW_FORM_udata: |
13084 | case DW_FORM_sdata: | |
43bbcdc2 PH |
13085 | fprintf_unfiltered (f, "constant: %s", |
13086 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 13087 | break; |
2dc7f7b3 TT |
13088 | case DW_FORM_sec_offset: |
13089 | fprintf_unfiltered (f, "section offset: %s", | |
13090 | pulongest (DW_UNSND (&die->attrs[i]))); | |
13091 | break; | |
55f1336d | 13092 | case DW_FORM_ref_sig8: |
348e048f DE |
13093 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) |
13094 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
13095 | DW_SIGNATURED_TYPE (&die->attrs[i])->offset); | |
13096 | else | |
13097 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
13098 | break; | |
c906108c | 13099 | case DW_FORM_string: |
4bdf3d34 | 13100 | case DW_FORM_strp: |
8285870a | 13101 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 13102 | DW_STRING (&die->attrs[i]) |
8285870a JK |
13103 | ? DW_STRING (&die->attrs[i]) : "", |
13104 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
13105 | break; |
13106 | case DW_FORM_flag: | |
13107 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 13108 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 13109 | else |
d97bc12b | 13110 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 13111 | break; |
2dc7f7b3 TT |
13112 | case DW_FORM_flag_present: |
13113 | fprintf_unfiltered (f, "flag: TRUE"); | |
13114 | break; | |
a8329558 | 13115 | case DW_FORM_indirect: |
0963b4bd MS |
13116 | /* The reader will have reduced the indirect form to |
13117 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
13118 | fprintf_unfiltered (f, |
13119 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 13120 | break; |
c906108c | 13121 | default: |
d97bc12b | 13122 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 13123 | die->attrs[i].form); |
d97bc12b | 13124 | break; |
c906108c | 13125 | } |
d97bc12b | 13126 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
13127 | } |
13128 | } | |
13129 | ||
f9aca02d | 13130 | static void |
d97bc12b | 13131 | dump_die_for_error (struct die_info *die) |
c906108c | 13132 | { |
d97bc12b DE |
13133 | dump_die_shallow (gdb_stderr, 0, die); |
13134 | } | |
13135 | ||
13136 | static void | |
13137 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
13138 | { | |
13139 | int indent = level * 4; | |
13140 | ||
13141 | gdb_assert (die != NULL); | |
13142 | ||
13143 | if (level >= max_level) | |
13144 | return; | |
13145 | ||
13146 | dump_die_shallow (f, indent, die); | |
13147 | ||
13148 | if (die->child != NULL) | |
c906108c | 13149 | { |
d97bc12b DE |
13150 | print_spaces (indent, f); |
13151 | fprintf_unfiltered (f, " Children:"); | |
13152 | if (level + 1 < max_level) | |
13153 | { | |
13154 | fprintf_unfiltered (f, "\n"); | |
13155 | dump_die_1 (f, level + 1, max_level, die->child); | |
13156 | } | |
13157 | else | |
13158 | { | |
3e43a32a MS |
13159 | fprintf_unfiltered (f, |
13160 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
13161 | } |
13162 | } | |
13163 | ||
13164 | if (die->sibling != NULL && level > 0) | |
13165 | { | |
13166 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
13167 | } |
13168 | } | |
13169 | ||
d97bc12b DE |
13170 | /* This is called from the pdie macro in gdbinit.in. |
13171 | It's not static so gcc will keep a copy callable from gdb. */ | |
13172 | ||
13173 | void | |
13174 | dump_die (struct die_info *die, int max_level) | |
13175 | { | |
13176 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
13177 | } | |
13178 | ||
f9aca02d | 13179 | static void |
51545339 | 13180 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13181 | { |
51545339 | 13182 | void **slot; |
c906108c | 13183 | |
51545339 DJ |
13184 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
13185 | ||
13186 | *slot = die; | |
c906108c SS |
13187 | } |
13188 | ||
93311388 DE |
13189 | static int |
13190 | is_ref_attr (struct attribute *attr) | |
c906108c | 13191 | { |
c906108c SS |
13192 | switch (attr->form) |
13193 | { | |
13194 | case DW_FORM_ref_addr: | |
c906108c SS |
13195 | case DW_FORM_ref1: |
13196 | case DW_FORM_ref2: | |
13197 | case DW_FORM_ref4: | |
613e1657 | 13198 | case DW_FORM_ref8: |
c906108c | 13199 | case DW_FORM_ref_udata: |
93311388 | 13200 | return 1; |
c906108c | 13201 | default: |
93311388 | 13202 | return 0; |
c906108c | 13203 | } |
93311388 DE |
13204 | } |
13205 | ||
13206 | static unsigned int | |
13207 | dwarf2_get_ref_die_offset (struct attribute *attr) | |
13208 | { | |
13209 | if (is_ref_attr (attr)) | |
13210 | return DW_ADDR (attr); | |
13211 | ||
13212 | complaint (&symfile_complaints, | |
13213 | _("unsupported die ref attribute form: '%s'"), | |
13214 | dwarf_form_name (attr->form)); | |
13215 | return 0; | |
c906108c SS |
13216 | } |
13217 | ||
43bbcdc2 PH |
13218 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
13219 | * the value held by the attribute is not constant. */ | |
a02abb62 | 13220 | |
43bbcdc2 | 13221 | static LONGEST |
a02abb62 JB |
13222 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
13223 | { | |
13224 | if (attr->form == DW_FORM_sdata) | |
13225 | return DW_SND (attr); | |
13226 | else if (attr->form == DW_FORM_udata | |
13227 | || attr->form == DW_FORM_data1 | |
13228 | || attr->form == DW_FORM_data2 | |
13229 | || attr->form == DW_FORM_data4 | |
13230 | || attr->form == DW_FORM_data8) | |
13231 | return DW_UNSND (attr); | |
13232 | else | |
13233 | { | |
3e43a32a MS |
13234 | complaint (&symfile_complaints, |
13235 | _("Attribute value is not a constant (%s)"), | |
a02abb62 JB |
13236 | dwarf_form_name (attr->form)); |
13237 | return default_value; | |
13238 | } | |
13239 | } | |
13240 | ||
03dd20cc | 13241 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
13242 | unit and add it to our queue. |
13243 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
13244 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 13245 | |
348e048f | 13246 | static int |
03dd20cc DJ |
13247 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
13248 | struct dwarf2_per_cu_data *per_cu) | |
13249 | { | |
98bfdba5 PA |
13250 | /* We may arrive here during partial symbol reading, if we need full |
13251 | DIEs to process an unusual case (e.g. template arguments). Do | |
13252 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
13253 | if (dwarf2_per_objfile->reading_partial_symbols) | |
13254 | { | |
13255 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
13256 | return 1; | |
13257 | return 0; | |
13258 | } | |
13259 | ||
03dd20cc DJ |
13260 | /* Mark the dependence relation so that we don't flush PER_CU |
13261 | too early. */ | |
13262 | dwarf2_add_dependence (this_cu, per_cu); | |
13263 | ||
13264 | /* If it's already on the queue, we have nothing to do. */ | |
13265 | if (per_cu->queued) | |
348e048f | 13266 | return 0; |
03dd20cc DJ |
13267 | |
13268 | /* If the compilation unit is already loaded, just mark it as | |
13269 | used. */ | |
13270 | if (per_cu->cu != NULL) | |
13271 | { | |
13272 | per_cu->cu->last_used = 0; | |
348e048f | 13273 | return 0; |
03dd20cc DJ |
13274 | } |
13275 | ||
13276 | /* Add it to the queue. */ | |
13277 | queue_comp_unit (per_cu, this_cu->objfile); | |
348e048f DE |
13278 | |
13279 | return 1; | |
13280 | } | |
13281 | ||
13282 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
13283 | On entry *REF_CU is the CU of SRC_DIE. | |
13284 | On exit *REF_CU is the CU of the result. */ | |
13285 | ||
13286 | static struct die_info * | |
13287 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
13288 | struct dwarf2_cu **ref_cu) | |
13289 | { | |
13290 | struct die_info *die; | |
13291 | ||
13292 | if (is_ref_attr (attr)) | |
13293 | die = follow_die_ref (src_die, attr, ref_cu); | |
55f1336d | 13294 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
13295 | die = follow_die_sig (src_die, attr, ref_cu); |
13296 | else | |
13297 | { | |
13298 | dump_die_for_error (src_die); | |
13299 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
13300 | (*ref_cu)->objfile->name); | |
13301 | } | |
13302 | ||
13303 | return die; | |
03dd20cc DJ |
13304 | } |
13305 | ||
5c631832 | 13306 | /* Follow reference OFFSET. |
673bfd45 DE |
13307 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
13308 | On exit *REF_CU is the CU of the result. | |
13309 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 13310 | |
f9aca02d | 13311 | static struct die_info * |
5c631832 | 13312 | follow_die_offset (unsigned int offset, struct dwarf2_cu **ref_cu) |
c906108c | 13313 | { |
10b3939b | 13314 | struct die_info temp_die; |
f2f0e013 | 13315 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 13316 | |
348e048f DE |
13317 | gdb_assert (cu->per_cu != NULL); |
13318 | ||
98bfdba5 PA |
13319 | target_cu = cu; |
13320 | ||
348e048f DE |
13321 | if (cu->per_cu->from_debug_types) |
13322 | { | |
13323 | /* .debug_types CUs cannot reference anything outside their CU. | |
13324 | If they need to, they have to reference a signatured type via | |
55f1336d | 13325 | DW_FORM_ref_sig8. */ |
348e048f | 13326 | if (! offset_in_cu_p (&cu->header, offset)) |
5c631832 | 13327 | return NULL; |
348e048f DE |
13328 | } |
13329 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
13330 | { |
13331 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 13332 | |
45452591 | 13333 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
13334 | |
13335 | /* If necessary, add it to the queue and load its DIEs. */ | |
348e048f DE |
13336 | if (maybe_queue_comp_unit (cu, per_cu)) |
13337 | load_full_comp_unit (per_cu, cu->objfile); | |
03dd20cc | 13338 | |
10b3939b DJ |
13339 | target_cu = per_cu->cu; |
13340 | } | |
98bfdba5 PA |
13341 | else if (cu->dies == NULL) |
13342 | { | |
13343 | /* We're loading full DIEs during partial symbol reading. */ | |
13344 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
13345 | load_full_comp_unit (cu->per_cu, cu->objfile); | |
13346 | } | |
c906108c | 13347 | |
f2f0e013 | 13348 | *ref_cu = target_cu; |
51545339 | 13349 | temp_die.offset = offset; |
5c631832 JK |
13350 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset); |
13351 | } | |
10b3939b | 13352 | |
5c631832 JK |
13353 | /* Follow reference attribute ATTR of SRC_DIE. |
13354 | On entry *REF_CU is the CU of SRC_DIE. | |
13355 | On exit *REF_CU is the CU of the result. */ | |
13356 | ||
13357 | static struct die_info * | |
13358 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
13359 | struct dwarf2_cu **ref_cu) | |
13360 | { | |
13361 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
13362 | struct dwarf2_cu *cu = *ref_cu; | |
13363 | struct die_info *die; | |
13364 | ||
13365 | die = follow_die_offset (offset, ref_cu); | |
13366 | if (!die) | |
13367 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
13368 | "at 0x%x [in module %s]"), | |
13369 | offset, src_die->offset, cu->objfile->name); | |
348e048f | 13370 | |
5c631832 JK |
13371 | return die; |
13372 | } | |
13373 | ||
13374 | /* Return DWARF block and its CU referenced by OFFSET at PER_CU. Returned | |
13375 | value is intended for DW_OP_call*. */ | |
13376 | ||
13377 | struct dwarf2_locexpr_baton | |
13378 | dwarf2_fetch_die_location_block (unsigned int offset, | |
8cf6f0b1 TT |
13379 | struct dwarf2_per_cu_data *per_cu, |
13380 | CORE_ADDR (*get_frame_pc) (void *baton), | |
13381 | void *baton) | |
5c631832 JK |
13382 | { |
13383 | struct dwarf2_cu *cu = per_cu->cu; | |
13384 | struct die_info *die; | |
13385 | struct attribute *attr; | |
13386 | struct dwarf2_locexpr_baton retval; | |
13387 | ||
8cf6f0b1 TT |
13388 | dw2_setup (per_cu->objfile); |
13389 | ||
5c631832 JK |
13390 | die = follow_die_offset (offset, &cu); |
13391 | if (!die) | |
13392 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
13393 | offset, per_cu->cu->objfile->name); | |
13394 | ||
13395 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
13396 | if (!attr) | |
13397 | { | |
13398 | /* DWARF: "If there is no such attribute, then there is no effect.". */ | |
13399 | ||
13400 | retval.data = NULL; | |
13401 | retval.size = 0; | |
13402 | } | |
8cf6f0b1 TT |
13403 | else if (attr_form_is_section_offset (attr)) |
13404 | { | |
13405 | struct dwarf2_loclist_baton loclist_baton; | |
13406 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
13407 | size_t size; | |
13408 | ||
13409 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
13410 | ||
13411 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
13412 | &size, pc); | |
13413 | retval.size = size; | |
13414 | } | |
5c631832 JK |
13415 | else |
13416 | { | |
13417 | if (!attr_form_is_block (attr)) | |
13418 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
13419 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
13420 | offset, per_cu->cu->objfile->name); | |
13421 | ||
13422 | retval.data = DW_BLOCK (attr)->data; | |
13423 | retval.size = DW_BLOCK (attr)->size; | |
13424 | } | |
13425 | retval.per_cu = cu->per_cu; | |
13426 | return retval; | |
348e048f DE |
13427 | } |
13428 | ||
13429 | /* Follow the signature attribute ATTR in SRC_DIE. | |
13430 | On entry *REF_CU is the CU of SRC_DIE. | |
13431 | On exit *REF_CU is the CU of the result. */ | |
13432 | ||
13433 | static struct die_info * | |
13434 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
13435 | struct dwarf2_cu **ref_cu) | |
13436 | { | |
13437 | struct objfile *objfile = (*ref_cu)->objfile; | |
13438 | struct die_info temp_die; | |
13439 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
13440 | struct dwarf2_cu *sig_cu; | |
13441 | struct die_info *die; | |
13442 | ||
13443 | /* sig_type will be NULL if the signatured type is missing from | |
13444 | the debug info. */ | |
13445 | if (sig_type == NULL) | |
13446 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
13447 | "at 0x%x [in module %s]"), | |
13448 | src_die->offset, objfile->name); | |
13449 | ||
13450 | /* If necessary, add it to the queue and load its DIEs. */ | |
13451 | ||
13452 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu)) | |
13453 | read_signatured_type (objfile, sig_type); | |
13454 | ||
13455 | gdb_assert (sig_type->per_cu.cu != NULL); | |
13456 | ||
13457 | sig_cu = sig_type->per_cu.cu; | |
13458 | temp_die.offset = sig_cu->header.offset + sig_type->type_offset; | |
13459 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, temp_die.offset); | |
13460 | if (die) | |
13461 | { | |
13462 | *ref_cu = sig_cu; | |
13463 | return die; | |
13464 | } | |
13465 | ||
3e43a32a MS |
13466 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced " |
13467 | "from DIE at 0x%x [in module %s]"), | |
348e048f DE |
13468 | sig_type->type_offset, src_die->offset, objfile->name); |
13469 | } | |
13470 | ||
13471 | /* Given an offset of a signatured type, return its signatured_type. */ | |
13472 | ||
13473 | static struct signatured_type * | |
13474 | lookup_signatured_type_at_offset (struct objfile *objfile, unsigned int offset) | |
13475 | { | |
13476 | gdb_byte *info_ptr = dwarf2_per_objfile->types.buffer + offset; | |
13477 | unsigned int length, initial_length_size; | |
13478 | unsigned int sig_offset; | |
13479 | struct signatured_type find_entry, *type_sig; | |
13480 | ||
13481 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
13482 | sig_offset = (initial_length_size | |
13483 | + 2 /*version*/ | |
13484 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
13485 | + 1 /*address_size*/); | |
13486 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
13487 | type_sig = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
13488 | ||
13489 | /* This is only used to lookup previously recorded types. | |
13490 | If we didn't find it, it's our bug. */ | |
13491 | gdb_assert (type_sig != NULL); | |
13492 | gdb_assert (offset == type_sig->offset); | |
13493 | ||
13494 | return type_sig; | |
13495 | } | |
13496 | ||
13497 | /* Read in signatured type at OFFSET and build its CU and die(s). */ | |
13498 | ||
13499 | static void | |
13500 | read_signatured_type_at_offset (struct objfile *objfile, | |
13501 | unsigned int offset) | |
13502 | { | |
13503 | struct signatured_type *type_sig; | |
13504 | ||
be391dca TT |
13505 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
13506 | ||
348e048f DE |
13507 | /* We have the section offset, but we need the signature to do the |
13508 | hash table lookup. */ | |
13509 | type_sig = lookup_signatured_type_at_offset (objfile, offset); | |
13510 | ||
13511 | gdb_assert (type_sig->per_cu.cu == NULL); | |
13512 | ||
13513 | read_signatured_type (objfile, type_sig); | |
13514 | ||
13515 | gdb_assert (type_sig->per_cu.cu != NULL); | |
13516 | } | |
13517 | ||
13518 | /* Read in a signatured type and build its CU and DIEs. */ | |
13519 | ||
13520 | static void | |
13521 | read_signatured_type (struct objfile *objfile, | |
13522 | struct signatured_type *type_sig) | |
13523 | { | |
1fd400ff | 13524 | gdb_byte *types_ptr; |
348e048f DE |
13525 | struct die_reader_specs reader_specs; |
13526 | struct dwarf2_cu *cu; | |
13527 | ULONGEST signature; | |
13528 | struct cleanup *back_to, *free_cu_cleanup; | |
348e048f | 13529 | |
1fd400ff TT |
13530 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
13531 | types_ptr = dwarf2_per_objfile->types.buffer + type_sig->offset; | |
13532 | ||
348e048f DE |
13533 | gdb_assert (type_sig->per_cu.cu == NULL); |
13534 | ||
9816fde3 JK |
13535 | cu = xmalloc (sizeof (*cu)); |
13536 | init_one_comp_unit (cu, objfile); | |
13537 | ||
348e048f DE |
13538 | type_sig->per_cu.cu = cu; |
13539 | cu->per_cu = &type_sig->per_cu; | |
13540 | ||
13541 | /* If an error occurs while loading, release our storage. */ | |
13542 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
13543 | ||
13544 | types_ptr = read_type_comp_unit_head (&cu->header, &signature, | |
13545 | types_ptr, objfile->obfd); | |
13546 | gdb_assert (signature == type_sig->signature); | |
13547 | ||
13548 | cu->die_hash | |
13549 | = htab_create_alloc_ex (cu->header.length / 12, | |
13550 | die_hash, | |
13551 | die_eq, | |
13552 | NULL, | |
13553 | &cu->comp_unit_obstack, | |
13554 | hashtab_obstack_allocate, | |
13555 | dummy_obstack_deallocate); | |
13556 | ||
13557 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
13558 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
13559 | ||
13560 | init_cu_die_reader (&reader_specs, cu); | |
13561 | ||
13562 | cu->dies = read_die_and_children (&reader_specs, types_ptr, &types_ptr, | |
13563 | NULL /*parent*/); | |
13564 | ||
13565 | /* We try not to read any attributes in this function, because not | |
13566 | all objfiles needed for references have been loaded yet, and symbol | |
13567 | table processing isn't initialized. But we have to set the CU language, | |
13568 | or we won't be able to build types correctly. */ | |
9816fde3 | 13569 | prepare_one_comp_unit (cu, cu->dies); |
348e048f DE |
13570 | |
13571 | do_cleanups (back_to); | |
13572 | ||
13573 | /* We've successfully allocated this compilation unit. Let our caller | |
13574 | clean it up when finished with it. */ | |
13575 | discard_cleanups (free_cu_cleanup); | |
13576 | ||
13577 | type_sig->per_cu.cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
13578 | dwarf2_per_objfile->read_in_chain = &type_sig->per_cu; | |
c906108c SS |
13579 | } |
13580 | ||
c906108c SS |
13581 | /* Decode simple location descriptions. |
13582 | Given a pointer to a dwarf block that defines a location, compute | |
13583 | the location and return the value. | |
13584 | ||
4cecd739 DJ |
13585 | NOTE drow/2003-11-18: This function is called in two situations |
13586 | now: for the address of static or global variables (partial symbols | |
13587 | only) and for offsets into structures which are expected to be | |
13588 | (more or less) constant. The partial symbol case should go away, | |
13589 | and only the constant case should remain. That will let this | |
13590 | function complain more accurately. A few special modes are allowed | |
13591 | without complaint for global variables (for instance, global | |
13592 | register values and thread-local values). | |
c906108c SS |
13593 | |
13594 | A location description containing no operations indicates that the | |
4cecd739 | 13595 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
13596 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
13597 | callers will only want a very basic result and this can become a | |
13598 | complaint. | |
c906108c | 13599 | |
d53d4ac5 | 13600 | Note that stack[0] is unused except as a default error return. */ |
c906108c SS |
13601 | |
13602 | static CORE_ADDR | |
e7c27a73 | 13603 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 13604 | { |
e7c27a73 | 13605 | struct objfile *objfile = cu->objfile; |
c906108c SS |
13606 | int i; |
13607 | int size = blk->size; | |
fe1b8b76 | 13608 | gdb_byte *data = blk->data; |
c906108c SS |
13609 | CORE_ADDR stack[64]; |
13610 | int stacki; | |
13611 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 13612 | gdb_byte op; |
c906108c SS |
13613 | |
13614 | i = 0; | |
13615 | stacki = 0; | |
13616 | stack[stacki] = 0; | |
d53d4ac5 | 13617 | stack[++stacki] = 0; |
c906108c SS |
13618 | |
13619 | while (i < size) | |
13620 | { | |
c906108c SS |
13621 | op = data[i++]; |
13622 | switch (op) | |
13623 | { | |
f1bea926 JM |
13624 | case DW_OP_lit0: |
13625 | case DW_OP_lit1: | |
13626 | case DW_OP_lit2: | |
13627 | case DW_OP_lit3: | |
13628 | case DW_OP_lit4: | |
13629 | case DW_OP_lit5: | |
13630 | case DW_OP_lit6: | |
13631 | case DW_OP_lit7: | |
13632 | case DW_OP_lit8: | |
13633 | case DW_OP_lit9: | |
13634 | case DW_OP_lit10: | |
13635 | case DW_OP_lit11: | |
13636 | case DW_OP_lit12: | |
13637 | case DW_OP_lit13: | |
13638 | case DW_OP_lit14: | |
13639 | case DW_OP_lit15: | |
13640 | case DW_OP_lit16: | |
13641 | case DW_OP_lit17: | |
13642 | case DW_OP_lit18: | |
13643 | case DW_OP_lit19: | |
13644 | case DW_OP_lit20: | |
13645 | case DW_OP_lit21: | |
13646 | case DW_OP_lit22: | |
13647 | case DW_OP_lit23: | |
13648 | case DW_OP_lit24: | |
13649 | case DW_OP_lit25: | |
13650 | case DW_OP_lit26: | |
13651 | case DW_OP_lit27: | |
13652 | case DW_OP_lit28: | |
13653 | case DW_OP_lit29: | |
13654 | case DW_OP_lit30: | |
13655 | case DW_OP_lit31: | |
13656 | stack[++stacki] = op - DW_OP_lit0; | |
13657 | break; | |
13658 | ||
c906108c SS |
13659 | case DW_OP_reg0: |
13660 | case DW_OP_reg1: | |
13661 | case DW_OP_reg2: | |
13662 | case DW_OP_reg3: | |
13663 | case DW_OP_reg4: | |
13664 | case DW_OP_reg5: | |
13665 | case DW_OP_reg6: | |
13666 | case DW_OP_reg7: | |
13667 | case DW_OP_reg8: | |
13668 | case DW_OP_reg9: | |
13669 | case DW_OP_reg10: | |
13670 | case DW_OP_reg11: | |
13671 | case DW_OP_reg12: | |
13672 | case DW_OP_reg13: | |
13673 | case DW_OP_reg14: | |
13674 | case DW_OP_reg15: | |
13675 | case DW_OP_reg16: | |
13676 | case DW_OP_reg17: | |
13677 | case DW_OP_reg18: | |
13678 | case DW_OP_reg19: | |
13679 | case DW_OP_reg20: | |
13680 | case DW_OP_reg21: | |
13681 | case DW_OP_reg22: | |
13682 | case DW_OP_reg23: | |
13683 | case DW_OP_reg24: | |
13684 | case DW_OP_reg25: | |
13685 | case DW_OP_reg26: | |
13686 | case DW_OP_reg27: | |
13687 | case DW_OP_reg28: | |
13688 | case DW_OP_reg29: | |
13689 | case DW_OP_reg30: | |
13690 | case DW_OP_reg31: | |
c906108c | 13691 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
13692 | if (i < size) |
13693 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
13694 | break; |
13695 | ||
13696 | case DW_OP_regx: | |
c906108c SS |
13697 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
13698 | i += bytes_read; | |
c906108c | 13699 | stack[++stacki] = unsnd; |
4cecd739 DJ |
13700 | if (i < size) |
13701 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
13702 | break; |
13703 | ||
13704 | case DW_OP_addr: | |
107d2387 | 13705 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 13706 | cu, &bytes_read); |
107d2387 | 13707 | i += bytes_read; |
c906108c SS |
13708 | break; |
13709 | ||
13710 | case DW_OP_const1u: | |
13711 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
13712 | i += 1; | |
13713 | break; | |
13714 | ||
13715 | case DW_OP_const1s: | |
13716 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
13717 | i += 1; | |
13718 | break; | |
13719 | ||
13720 | case DW_OP_const2u: | |
13721 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
13722 | i += 2; | |
13723 | break; | |
13724 | ||
13725 | case DW_OP_const2s: | |
13726 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
13727 | i += 2; | |
13728 | break; | |
13729 | ||
13730 | case DW_OP_const4u: | |
13731 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
13732 | i += 4; | |
13733 | break; | |
13734 | ||
13735 | case DW_OP_const4s: | |
13736 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
13737 | i += 4; | |
13738 | break; | |
13739 | ||
13740 | case DW_OP_constu: | |
13741 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 13742 | &bytes_read); |
c906108c SS |
13743 | i += bytes_read; |
13744 | break; | |
13745 | ||
13746 | case DW_OP_consts: | |
13747 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
13748 | i += bytes_read; | |
13749 | break; | |
13750 | ||
f1bea926 JM |
13751 | case DW_OP_dup: |
13752 | stack[stacki + 1] = stack[stacki]; | |
13753 | stacki++; | |
13754 | break; | |
13755 | ||
c906108c SS |
13756 | case DW_OP_plus: |
13757 | stack[stacki - 1] += stack[stacki]; | |
13758 | stacki--; | |
13759 | break; | |
13760 | ||
13761 | case DW_OP_plus_uconst: | |
3e43a32a MS |
13762 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), |
13763 | &bytes_read); | |
c906108c SS |
13764 | i += bytes_read; |
13765 | break; | |
13766 | ||
13767 | case DW_OP_minus: | |
f1bea926 | 13768 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
13769 | stacki--; |
13770 | break; | |
13771 | ||
7a292a7a | 13772 | case DW_OP_deref: |
7a292a7a | 13773 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
13774 | this using GDB's address_class enum. This is valid for partial |
13775 | global symbols, although the variable's address will be bogus | |
13776 | in the psymtab. */ | |
7a292a7a | 13777 | if (i < size) |
4d3c2250 | 13778 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
13779 | break; |
13780 | ||
9d774e44 | 13781 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
13782 | /* The top of the stack has the offset from the beginning |
13783 | of the thread control block at which the variable is located. */ | |
13784 | /* Nothing should follow this operator, so the top of stack would | |
13785 | be returned. */ | |
4cecd739 DJ |
13786 | /* This is valid for partial global symbols, but the variable's |
13787 | address will be bogus in the psymtab. */ | |
9d774e44 | 13788 | if (i < size) |
4d3c2250 | 13789 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
13790 | break; |
13791 | ||
42be36b3 CT |
13792 | case DW_OP_GNU_uninit: |
13793 | break; | |
13794 | ||
c906108c | 13795 | default: |
b1bfef65 TT |
13796 | { |
13797 | const char *name = dwarf_stack_op_name (op); | |
13798 | ||
13799 | if (name) | |
13800 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), | |
13801 | name); | |
13802 | else | |
13803 | complaint (&symfile_complaints, _("unsupported stack op: '%02x'"), | |
13804 | op); | |
13805 | } | |
13806 | ||
c906108c SS |
13807 | return (stack[stacki]); |
13808 | } | |
d53d4ac5 TT |
13809 | |
13810 | /* Enforce maximum stack depth of SIZE-1 to avoid writing | |
13811 | outside of the allocated space. Also enforce minimum>0. */ | |
13812 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
13813 | { | |
13814 | complaint (&symfile_complaints, | |
13815 | _("location description stack overflow")); | |
13816 | return 0; | |
13817 | } | |
13818 | ||
13819 | if (stacki <= 0) | |
13820 | { | |
13821 | complaint (&symfile_complaints, | |
13822 | _("location description stack underflow")); | |
13823 | return 0; | |
13824 | } | |
c906108c SS |
13825 | } |
13826 | return (stack[stacki]); | |
13827 | } | |
13828 | ||
13829 | /* memory allocation interface */ | |
13830 | ||
c906108c | 13831 | static struct dwarf_block * |
7b5a2f43 | 13832 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
13833 | { |
13834 | struct dwarf_block *blk; | |
13835 | ||
13836 | blk = (struct dwarf_block *) | |
7b5a2f43 | 13837 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
13838 | return (blk); |
13839 | } | |
13840 | ||
13841 | static struct abbrev_info * | |
f3dd6933 | 13842 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
13843 | { |
13844 | struct abbrev_info *abbrev; | |
13845 | ||
f3dd6933 DJ |
13846 | abbrev = (struct abbrev_info *) |
13847 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
13848 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
13849 | return (abbrev); | |
13850 | } | |
13851 | ||
13852 | static struct die_info * | |
b60c80d6 | 13853 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
13854 | { |
13855 | struct die_info *die; | |
b60c80d6 DJ |
13856 | size_t size = sizeof (struct die_info); |
13857 | ||
13858 | if (num_attrs > 1) | |
13859 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 13860 | |
b60c80d6 | 13861 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
13862 | memset (die, 0, sizeof (struct die_info)); |
13863 | return (die); | |
13864 | } | |
2e276125 JB |
13865 | |
13866 | \f | |
13867 | /* Macro support. */ | |
13868 | ||
2e276125 JB |
13869 | /* Return the full name of file number I in *LH's file name table. |
13870 | Use COMP_DIR as the name of the current directory of the | |
13871 | compilation. The result is allocated using xmalloc; the caller is | |
13872 | responsible for freeing it. */ | |
13873 | static char * | |
13874 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
13875 | { | |
6a83a1e6 EZ |
13876 | /* Is the file number a valid index into the line header's file name |
13877 | table? Remember that file numbers start with one, not zero. */ | |
13878 | if (1 <= file && file <= lh->num_file_names) | |
13879 | { | |
13880 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 13881 | |
6a83a1e6 EZ |
13882 | if (IS_ABSOLUTE_PATH (fe->name)) |
13883 | return xstrdup (fe->name); | |
13884 | else | |
13885 | { | |
13886 | const char *dir; | |
13887 | int dir_len; | |
13888 | char *full_name; | |
13889 | ||
13890 | if (fe->dir_index) | |
13891 | dir = lh->include_dirs[fe->dir_index - 1]; | |
13892 | else | |
13893 | dir = comp_dir; | |
13894 | ||
13895 | if (dir) | |
13896 | { | |
13897 | dir_len = strlen (dir); | |
13898 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
13899 | strcpy (full_name, dir); | |
13900 | full_name[dir_len] = '/'; | |
13901 | strcpy (full_name + dir_len + 1, fe->name); | |
13902 | return full_name; | |
13903 | } | |
13904 | else | |
13905 | return xstrdup (fe->name); | |
13906 | } | |
13907 | } | |
2e276125 JB |
13908 | else |
13909 | { | |
6a83a1e6 EZ |
13910 | /* The compiler produced a bogus file number. We can at least |
13911 | record the macro definitions made in the file, even if we | |
13912 | won't be able to find the file by name. */ | |
13913 | char fake_name[80]; | |
9a619af0 | 13914 | |
6a83a1e6 | 13915 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 13916 | |
6e70227d | 13917 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
13918 | _("bad file number in macro information (%d)"), |
13919 | file); | |
2e276125 | 13920 | |
6a83a1e6 | 13921 | return xstrdup (fake_name); |
2e276125 JB |
13922 | } |
13923 | } | |
13924 | ||
13925 | ||
13926 | static struct macro_source_file * | |
13927 | macro_start_file (int file, int line, | |
13928 | struct macro_source_file *current_file, | |
13929 | const char *comp_dir, | |
13930 | struct line_header *lh, struct objfile *objfile) | |
13931 | { | |
13932 | /* The full name of this source file. */ | |
13933 | char *full_name = file_full_name (file, lh, comp_dir); | |
13934 | ||
13935 | /* We don't create a macro table for this compilation unit | |
13936 | at all until we actually get a filename. */ | |
13937 | if (! pending_macros) | |
4a146b47 | 13938 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 13939 | objfile->macro_cache); |
2e276125 JB |
13940 | |
13941 | if (! current_file) | |
13942 | /* If we have no current file, then this must be the start_file | |
13943 | directive for the compilation unit's main source file. */ | |
13944 | current_file = macro_set_main (pending_macros, full_name); | |
13945 | else | |
13946 | current_file = macro_include (current_file, line, full_name); | |
13947 | ||
13948 | xfree (full_name); | |
6e70227d | 13949 | |
2e276125 JB |
13950 | return current_file; |
13951 | } | |
13952 | ||
13953 | ||
13954 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
13955 | followed by a null byte. */ | |
13956 | static char * | |
13957 | copy_string (const char *buf, int len) | |
13958 | { | |
13959 | char *s = xmalloc (len + 1); | |
9a619af0 | 13960 | |
2e276125 JB |
13961 | memcpy (s, buf, len); |
13962 | s[len] = '\0'; | |
2e276125 JB |
13963 | return s; |
13964 | } | |
13965 | ||
13966 | ||
13967 | static const char * | |
13968 | consume_improper_spaces (const char *p, const char *body) | |
13969 | { | |
13970 | if (*p == ' ') | |
13971 | { | |
4d3c2250 | 13972 | complaint (&symfile_complaints, |
3e43a32a MS |
13973 | _("macro definition contains spaces " |
13974 | "in formal argument list:\n`%s'"), | |
4d3c2250 | 13975 | body); |
2e276125 JB |
13976 | |
13977 | while (*p == ' ') | |
13978 | p++; | |
13979 | } | |
13980 | ||
13981 | return p; | |
13982 | } | |
13983 | ||
13984 | ||
13985 | static void | |
13986 | parse_macro_definition (struct macro_source_file *file, int line, | |
13987 | const char *body) | |
13988 | { | |
13989 | const char *p; | |
13990 | ||
13991 | /* The body string takes one of two forms. For object-like macro | |
13992 | definitions, it should be: | |
13993 | ||
13994 | <macro name> " " <definition> | |
13995 | ||
13996 | For function-like macro definitions, it should be: | |
13997 | ||
13998 | <macro name> "() " <definition> | |
13999 | or | |
14000 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
14001 | ||
14002 | Spaces may appear only where explicitly indicated, and in the | |
14003 | <definition>. | |
14004 | ||
14005 | The Dwarf 2 spec says that an object-like macro's name is always | |
14006 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 14007 | the space when the macro's definition is the empty string. |
2e276125 JB |
14008 | |
14009 | The Dwarf 2 spec says that there should be no spaces between the | |
14010 | formal arguments in a function-like macro's formal argument list, | |
14011 | but versions of GCC around March 2002 include spaces after the | |
14012 | commas. */ | |
14013 | ||
14014 | ||
14015 | /* Find the extent of the macro name. The macro name is terminated | |
14016 | by either a space or null character (for an object-like macro) or | |
14017 | an opening paren (for a function-like macro). */ | |
14018 | for (p = body; *p; p++) | |
14019 | if (*p == ' ' || *p == '(') | |
14020 | break; | |
14021 | ||
14022 | if (*p == ' ' || *p == '\0') | |
14023 | { | |
14024 | /* It's an object-like macro. */ | |
14025 | int name_len = p - body; | |
14026 | char *name = copy_string (body, name_len); | |
14027 | const char *replacement; | |
14028 | ||
14029 | if (*p == ' ') | |
14030 | replacement = body + name_len + 1; | |
14031 | else | |
14032 | { | |
4d3c2250 | 14033 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14034 | replacement = body + name_len; |
14035 | } | |
6e70227d | 14036 | |
2e276125 JB |
14037 | macro_define_object (file, line, name, replacement); |
14038 | ||
14039 | xfree (name); | |
14040 | } | |
14041 | else if (*p == '(') | |
14042 | { | |
14043 | /* It's a function-like macro. */ | |
14044 | char *name = copy_string (body, p - body); | |
14045 | int argc = 0; | |
14046 | int argv_size = 1; | |
14047 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
14048 | ||
14049 | p++; | |
14050 | ||
14051 | p = consume_improper_spaces (p, body); | |
14052 | ||
14053 | /* Parse the formal argument list. */ | |
14054 | while (*p && *p != ')') | |
14055 | { | |
14056 | /* Find the extent of the current argument name. */ | |
14057 | const char *arg_start = p; | |
14058 | ||
14059 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
14060 | p++; | |
14061 | ||
14062 | if (! *p || p == arg_start) | |
4d3c2250 | 14063 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14064 | else |
14065 | { | |
14066 | /* Make sure argv has room for the new argument. */ | |
14067 | if (argc >= argv_size) | |
14068 | { | |
14069 | argv_size *= 2; | |
14070 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
14071 | } | |
14072 | ||
14073 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
14074 | } | |
14075 | ||
14076 | p = consume_improper_spaces (p, body); | |
14077 | ||
14078 | /* Consume the comma, if present. */ | |
14079 | if (*p == ',') | |
14080 | { | |
14081 | p++; | |
14082 | ||
14083 | p = consume_improper_spaces (p, body); | |
14084 | } | |
14085 | } | |
14086 | ||
14087 | if (*p == ')') | |
14088 | { | |
14089 | p++; | |
14090 | ||
14091 | if (*p == ' ') | |
14092 | /* Perfectly formed definition, no complaints. */ | |
14093 | macro_define_function (file, line, name, | |
6e70227d | 14094 | argc, (const char **) argv, |
2e276125 JB |
14095 | p + 1); |
14096 | else if (*p == '\0') | |
14097 | { | |
14098 | /* Complain, but do define it. */ | |
4d3c2250 | 14099 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 14100 | macro_define_function (file, line, name, |
6e70227d | 14101 | argc, (const char **) argv, |
2e276125 JB |
14102 | p); |
14103 | } | |
14104 | else | |
14105 | /* Just complain. */ | |
4d3c2250 | 14106 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14107 | } |
14108 | else | |
14109 | /* Just complain. */ | |
4d3c2250 | 14110 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14111 | |
14112 | xfree (name); | |
14113 | { | |
14114 | int i; | |
14115 | ||
14116 | for (i = 0; i < argc; i++) | |
14117 | xfree (argv[i]); | |
14118 | } | |
14119 | xfree (argv); | |
14120 | } | |
14121 | else | |
4d3c2250 | 14122 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
14123 | } |
14124 | ||
14125 | ||
14126 | static void | |
14127 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
14128 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 14129 | struct dwarf2_cu *cu) |
2e276125 | 14130 | { |
fe1b8b76 | 14131 | gdb_byte *mac_ptr, *mac_end; |
2e276125 | 14132 | struct macro_source_file *current_file = 0; |
757a13d0 JK |
14133 | enum dwarf_macinfo_record_type macinfo_type; |
14134 | int at_commandline; | |
2e276125 | 14135 | |
be391dca TT |
14136 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
14137 | &dwarf2_per_objfile->macinfo); | |
dce234bc | 14138 | if (dwarf2_per_objfile->macinfo.buffer == NULL) |
2e276125 | 14139 | { |
e2e0b3e5 | 14140 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
14141 | return; |
14142 | } | |
14143 | ||
757a13d0 JK |
14144 | /* First pass: Find the name of the base filename. |
14145 | This filename is needed in order to process all macros whose definition | |
14146 | (or undefinition) comes from the command line. These macros are defined | |
14147 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
14148 | associated to the base file. | |
14149 | ||
14150 | To determine the base file name, we scan the macro definitions until we | |
14151 | reach the first DW_MACINFO_start_file entry. We then initialize | |
14152 | CURRENT_FILE accordingly so that any macro definition found before the | |
14153 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
14154 | ||
dce234bc PP |
14155 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
14156 | mac_end = dwarf2_per_objfile->macinfo.buffer | |
14157 | + dwarf2_per_objfile->macinfo.size; | |
2e276125 | 14158 | |
757a13d0 | 14159 | do |
2e276125 | 14160 | { |
2e276125 JB |
14161 | /* Do we at least have room for a macinfo type byte? */ |
14162 | if (mac_ptr >= mac_end) | |
14163 | { | |
757a13d0 | 14164 | /* Complaint is printed during the second pass as GDB will probably |
3e43a32a MS |
14165 | stop the first pass earlier upon finding |
14166 | DW_MACINFO_start_file. */ | |
757a13d0 | 14167 | break; |
2e276125 JB |
14168 | } |
14169 | ||
14170 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
14171 | mac_ptr++; | |
14172 | ||
14173 | switch (macinfo_type) | |
14174 | { | |
14175 | /* A zero macinfo type indicates the end of the macro | |
14176 | information. */ | |
14177 | case 0: | |
757a13d0 JK |
14178 | break; |
14179 | ||
14180 | case DW_MACINFO_define: | |
14181 | case DW_MACINFO_undef: | |
14182 | /* Only skip the data by MAC_PTR. */ | |
14183 | { | |
14184 | unsigned int bytes_read; | |
14185 | ||
14186 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14187 | mac_ptr += bytes_read; | |
9b1c24c8 | 14188 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
14189 | mac_ptr += bytes_read; |
14190 | } | |
14191 | break; | |
14192 | ||
14193 | case DW_MACINFO_start_file: | |
14194 | { | |
14195 | unsigned int bytes_read; | |
14196 | int line, file; | |
14197 | ||
14198 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14199 | mac_ptr += bytes_read; | |
14200 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14201 | mac_ptr += bytes_read; | |
14202 | ||
3e43a32a MS |
14203 | current_file = macro_start_file (file, line, current_file, |
14204 | comp_dir, lh, cu->objfile); | |
757a13d0 JK |
14205 | } |
14206 | break; | |
14207 | ||
14208 | case DW_MACINFO_end_file: | |
14209 | /* No data to skip by MAC_PTR. */ | |
14210 | break; | |
14211 | ||
14212 | case DW_MACINFO_vendor_ext: | |
14213 | /* Only skip the data by MAC_PTR. */ | |
14214 | { | |
14215 | unsigned int bytes_read; | |
14216 | ||
14217 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14218 | mac_ptr += bytes_read; | |
9b1c24c8 | 14219 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
14220 | mac_ptr += bytes_read; |
14221 | } | |
14222 | break; | |
14223 | ||
14224 | default: | |
14225 | break; | |
14226 | } | |
14227 | } while (macinfo_type != 0 && current_file == NULL); | |
14228 | ||
14229 | /* Second pass: Process all entries. | |
14230 | ||
14231 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
14232 | command-line macro definitions/undefinitions. This flag is unset when we | |
14233 | reach the first DW_MACINFO_start_file entry. */ | |
14234 | ||
dce234bc | 14235 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
757a13d0 JK |
14236 | |
14237 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
14238 | GDB is still reading the definitions from command line. First | |
14239 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
14240 | to create CURRENT_FILE for the main source holding also the command line | |
14241 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
14242 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
14243 | ||
14244 | at_commandline = 1; | |
14245 | ||
14246 | do | |
14247 | { | |
14248 | /* Do we at least have room for a macinfo type byte? */ | |
14249 | if (mac_ptr >= mac_end) | |
14250 | { | |
14251 | dwarf2_macros_too_long_complaint (); | |
14252 | break; | |
14253 | } | |
14254 | ||
14255 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
14256 | mac_ptr++; | |
14257 | ||
14258 | switch (macinfo_type) | |
14259 | { | |
14260 | /* A zero macinfo type indicates the end of the macro | |
14261 | information. */ | |
14262 | case 0: | |
14263 | break; | |
2e276125 JB |
14264 | |
14265 | case DW_MACINFO_define: | |
14266 | case DW_MACINFO_undef: | |
14267 | { | |
891d2f0b | 14268 | unsigned int bytes_read; |
2e276125 JB |
14269 | int line; |
14270 | char *body; | |
14271 | ||
14272 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14273 | mac_ptr += bytes_read; | |
9b1c24c8 | 14274 | body = read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
14275 | mac_ptr += bytes_read; |
14276 | ||
14277 | if (! current_file) | |
757a13d0 JK |
14278 | { |
14279 | /* DWARF violation as no main source is present. */ | |
14280 | complaint (&symfile_complaints, | |
14281 | _("debug info with no main source gives macro %s " | |
14282 | "on line %d: %s"), | |
6e70227d DE |
14283 | macinfo_type == DW_MACINFO_define ? |
14284 | _("definition") : | |
905e0470 PM |
14285 | macinfo_type == DW_MACINFO_undef ? |
14286 | _("undefinition") : | |
14287 | _("something-or-other"), line, body); | |
757a13d0 JK |
14288 | break; |
14289 | } | |
3e43a32a MS |
14290 | if ((line == 0 && !at_commandline) |
14291 | || (line != 0 && at_commandline)) | |
4d3c2250 | 14292 | complaint (&symfile_complaints, |
757a13d0 JK |
14293 | _("debug info gives %s macro %s with %s line %d: %s"), |
14294 | at_commandline ? _("command-line") : _("in-file"), | |
905e0470 | 14295 | macinfo_type == DW_MACINFO_define ? |
6e70227d | 14296 | _("definition") : |
905e0470 PM |
14297 | macinfo_type == DW_MACINFO_undef ? |
14298 | _("undefinition") : | |
14299 | _("something-or-other"), | |
757a13d0 JK |
14300 | line == 0 ? _("zero") : _("non-zero"), line, body); |
14301 | ||
14302 | if (macinfo_type == DW_MACINFO_define) | |
14303 | parse_macro_definition (current_file, line, body); | |
14304 | else if (macinfo_type == DW_MACINFO_undef) | |
14305 | macro_undef (current_file, line, body); | |
2e276125 JB |
14306 | } |
14307 | break; | |
14308 | ||
14309 | case DW_MACINFO_start_file: | |
14310 | { | |
891d2f0b | 14311 | unsigned int bytes_read; |
2e276125 JB |
14312 | int line, file; |
14313 | ||
14314 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14315 | mac_ptr += bytes_read; | |
14316 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14317 | mac_ptr += bytes_read; | |
14318 | ||
3e43a32a MS |
14319 | if ((line == 0 && !at_commandline) |
14320 | || (line != 0 && at_commandline)) | |
757a13d0 JK |
14321 | complaint (&symfile_complaints, |
14322 | _("debug info gives source %d included " | |
14323 | "from %s at %s line %d"), | |
14324 | file, at_commandline ? _("command-line") : _("file"), | |
14325 | line == 0 ? _("zero") : _("non-zero"), line); | |
14326 | ||
14327 | if (at_commandline) | |
14328 | { | |
14329 | /* This DW_MACINFO_start_file was executed in the pass one. */ | |
14330 | at_commandline = 0; | |
14331 | } | |
14332 | else | |
14333 | current_file = macro_start_file (file, line, | |
14334 | current_file, comp_dir, | |
14335 | lh, cu->objfile); | |
2e276125 JB |
14336 | } |
14337 | break; | |
14338 | ||
14339 | case DW_MACINFO_end_file: | |
14340 | if (! current_file) | |
4d3c2250 | 14341 | complaint (&symfile_complaints, |
3e43a32a MS |
14342 | _("macro debug info has an unmatched " |
14343 | "`close_file' directive")); | |
2e276125 JB |
14344 | else |
14345 | { | |
14346 | current_file = current_file->included_by; | |
14347 | if (! current_file) | |
14348 | { | |
14349 | enum dwarf_macinfo_record_type next_type; | |
14350 | ||
14351 | /* GCC circa March 2002 doesn't produce the zero | |
14352 | type byte marking the end of the compilation | |
14353 | unit. Complain if it's not there, but exit no | |
14354 | matter what. */ | |
14355 | ||
14356 | /* Do we at least have room for a macinfo type byte? */ | |
14357 | if (mac_ptr >= mac_end) | |
14358 | { | |
4d3c2250 | 14359 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
14360 | return; |
14361 | } | |
14362 | ||
14363 | /* We don't increment mac_ptr here, so this is just | |
14364 | a look-ahead. */ | |
14365 | next_type = read_1_byte (abfd, mac_ptr); | |
14366 | if (next_type != 0) | |
4d3c2250 | 14367 | complaint (&symfile_complaints, |
3e43a32a MS |
14368 | _("no terminating 0-type entry for " |
14369 | "macros in `.debug_macinfo' section")); | |
2e276125 JB |
14370 | |
14371 | return; | |
14372 | } | |
14373 | } | |
14374 | break; | |
14375 | ||
14376 | case DW_MACINFO_vendor_ext: | |
14377 | { | |
891d2f0b | 14378 | unsigned int bytes_read; |
2e276125 | 14379 | int constant; |
2e276125 JB |
14380 | |
14381 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
14382 | mac_ptr += bytes_read; | |
e8e80198 | 14383 | read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
14384 | mac_ptr += bytes_read; |
14385 | ||
14386 | /* We don't recognize any vendor extensions. */ | |
14387 | } | |
14388 | break; | |
14389 | } | |
757a13d0 | 14390 | } while (macinfo_type != 0); |
2e276125 | 14391 | } |
8e19ed76 PS |
14392 | |
14393 | /* Check if the attribute's form is a DW_FORM_block* | |
0963b4bd | 14394 | if so return true else false. */ |
8e19ed76 PS |
14395 | static int |
14396 | attr_form_is_block (struct attribute *attr) | |
14397 | { | |
14398 | return (attr == NULL ? 0 : | |
14399 | attr->form == DW_FORM_block1 | |
14400 | || attr->form == DW_FORM_block2 | |
14401 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
14402 | || attr->form == DW_FORM_block |
14403 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 14404 | } |
4c2df51b | 14405 | |
c6a0999f JB |
14406 | /* Return non-zero if ATTR's value is a section offset --- classes |
14407 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
14408 | You may use DW_UNSND (attr) to retrieve such offsets. | |
14409 | ||
14410 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
14411 | may have a value that belongs to more than one of these classes; it | |
14412 | would be ambiguous if we did, because we use the same forms for all | |
14413 | of them. */ | |
3690dd37 JB |
14414 | static int |
14415 | attr_form_is_section_offset (struct attribute *attr) | |
14416 | { | |
14417 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
14418 | || attr->form == DW_FORM_data8 |
14419 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
14420 | } |
14421 | ||
14422 | ||
14423 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
14424 | zero otherwise. When this function returns true, you can apply | |
14425 | dwarf2_get_attr_constant_value to it. | |
14426 | ||
14427 | However, note that for some attributes you must check | |
14428 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
14429 | and DW_FORM_data8 are members of both the constant class, and of | |
14430 | the classes that contain offsets into other debug sections | |
14431 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
14432 | that, if an attribute's can be either a constant or one of the | |
14433 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
14434 | taken as section offsets, not constants. */ | |
14435 | static int | |
14436 | attr_form_is_constant (struct attribute *attr) | |
14437 | { | |
14438 | switch (attr->form) | |
14439 | { | |
14440 | case DW_FORM_sdata: | |
14441 | case DW_FORM_udata: | |
14442 | case DW_FORM_data1: | |
14443 | case DW_FORM_data2: | |
14444 | case DW_FORM_data4: | |
14445 | case DW_FORM_data8: | |
14446 | return 1; | |
14447 | default: | |
14448 | return 0; | |
14449 | } | |
14450 | } | |
14451 | ||
8cf6f0b1 TT |
14452 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
14453 | ||
14454 | static void | |
14455 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
14456 | struct dwarf2_loclist_baton *baton, | |
14457 | struct attribute *attr) | |
14458 | { | |
14459 | dwarf2_read_section (dwarf2_per_objfile->objfile, | |
14460 | &dwarf2_per_objfile->loc); | |
14461 | ||
14462 | baton->per_cu = cu->per_cu; | |
14463 | gdb_assert (baton->per_cu); | |
14464 | /* We don't know how long the location list is, but make sure we | |
14465 | don't run off the edge of the section. */ | |
14466 | baton->size = dwarf2_per_objfile->loc.size - DW_UNSND (attr); | |
14467 | baton->data = dwarf2_per_objfile->loc.buffer + DW_UNSND (attr); | |
14468 | baton->base_address = cu->base_address; | |
14469 | } | |
14470 | ||
4c2df51b DJ |
14471 | static void |
14472 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 14473 | struct dwarf2_cu *cu) |
4c2df51b | 14474 | { |
3690dd37 | 14475 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
14476 | /* ".debug_loc" may not exist at all, or the offset may be outside |
14477 | the section. If so, fall through to the complaint in the | |
14478 | other branch. */ | |
9e0ac564 TT |
14479 | && DW_UNSND (attr) < dwarf2_section_size (dwarf2_per_objfile->objfile, |
14480 | &dwarf2_per_objfile->loc)) | |
4c2df51b | 14481 | { |
0d53c4c4 | 14482 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 14483 | |
4a146b47 | 14484 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 14485 | sizeof (struct dwarf2_loclist_baton)); |
4c2df51b | 14486 | |
8cf6f0b1 | 14487 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 14488 | |
d00adf39 | 14489 | if (cu->base_known == 0) |
0d53c4c4 | 14490 | complaint (&symfile_complaints, |
3e43a32a MS |
14491 | _("Location list used without " |
14492 | "specifying the CU base address.")); | |
4c2df51b | 14493 | |
768a979c | 14494 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
14495 | SYMBOL_LOCATION_BATON (sym) = baton; |
14496 | } | |
14497 | else | |
14498 | { | |
14499 | struct dwarf2_locexpr_baton *baton; | |
14500 | ||
4a146b47 | 14501 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 14502 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
14503 | baton->per_cu = cu->per_cu; |
14504 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
14505 | |
14506 | if (attr_form_is_block (attr)) | |
14507 | { | |
14508 | /* Note that we're just copying the block's data pointer | |
14509 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
14510 | info_buffer for SYM's objfile; right now we never release |
14511 | that buffer, but when we do clean up properly this may | |
14512 | need to change. */ | |
0d53c4c4 DJ |
14513 | baton->size = DW_BLOCK (attr)->size; |
14514 | baton->data = DW_BLOCK (attr)->data; | |
14515 | } | |
14516 | else | |
14517 | { | |
14518 | dwarf2_invalid_attrib_class_complaint ("location description", | |
14519 | SYMBOL_NATURAL_NAME (sym)); | |
14520 | baton->size = 0; | |
14521 | baton->data = NULL; | |
14522 | } | |
6e70227d | 14523 | |
768a979c | 14524 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
14525 | SYMBOL_LOCATION_BATON (sym) = baton; |
14526 | } | |
4c2df51b | 14527 | } |
6502dd73 | 14528 | |
9aa1f1e3 TT |
14529 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
14530 | came from a separate debuginfo file, then the master objfile is | |
14531 | returned. */ | |
ae0d2f24 UW |
14532 | |
14533 | struct objfile * | |
14534 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
14535 | { | |
9291a0cd | 14536 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
14537 | |
14538 | /* Return the master objfile, so that we can report and look up the | |
14539 | correct file containing this variable. */ | |
14540 | if (objfile->separate_debug_objfile_backlink) | |
14541 | objfile = objfile->separate_debug_objfile_backlink; | |
14542 | ||
14543 | return objfile; | |
14544 | } | |
14545 | ||
14546 | /* Return the address size given in the compilation unit header for CU. */ | |
14547 | ||
14548 | CORE_ADDR | |
14549 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
14550 | { | |
14551 | if (per_cu->cu) | |
14552 | return per_cu->cu->header.addr_size; | |
14553 | else | |
14554 | { | |
14555 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 14556 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
14557 | struct dwarf2_per_objfile *per_objfile |
14558 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
dce234bc | 14559 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; |
ae0d2f24 | 14560 | struct comp_unit_head cu_header; |
9a619af0 | 14561 | |
ae0d2f24 UW |
14562 | memset (&cu_header, 0, sizeof cu_header); |
14563 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
14564 | return cu_header.addr_size; | |
14565 | } | |
14566 | } | |
14567 | ||
9eae7c52 TT |
14568 | /* Return the offset size given in the compilation unit header for CU. */ |
14569 | ||
14570 | int | |
14571 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
14572 | { | |
14573 | if (per_cu->cu) | |
14574 | return per_cu->cu->header.offset_size; | |
14575 | else | |
14576 | { | |
14577 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 14578 | struct objfile *objfile = per_cu->objfile; |
9eae7c52 TT |
14579 | struct dwarf2_per_objfile *per_objfile |
14580 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
14581 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; | |
14582 | struct comp_unit_head cu_header; | |
14583 | ||
14584 | memset (&cu_header, 0, sizeof cu_header); | |
14585 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
14586 | return cu_header.offset_size; | |
14587 | } | |
14588 | } | |
14589 | ||
9aa1f1e3 TT |
14590 | /* Return the text offset of the CU. The returned offset comes from |
14591 | this CU's objfile. If this objfile came from a separate debuginfo | |
14592 | file, then the offset may be different from the corresponding | |
14593 | offset in the parent objfile. */ | |
14594 | ||
14595 | CORE_ADDR | |
14596 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
14597 | { | |
bb3fa9d0 | 14598 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
14599 | |
14600 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14601 | } | |
14602 | ||
348e048f DE |
14603 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
14604 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
14605 | |
14606 | static struct dwarf2_per_cu_data * | |
c764a876 | 14607 | dwarf2_find_containing_comp_unit (unsigned int offset, |
ae038cb0 DJ |
14608 | struct objfile *objfile) |
14609 | { | |
14610 | struct dwarf2_per_cu_data *this_cu; | |
14611 | int low, high; | |
14612 | ||
ae038cb0 DJ |
14613 | low = 0; |
14614 | high = dwarf2_per_objfile->n_comp_units - 1; | |
14615 | while (high > low) | |
14616 | { | |
14617 | int mid = low + (high - low) / 2; | |
9a619af0 | 14618 | |
ae038cb0 DJ |
14619 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) |
14620 | high = mid; | |
14621 | else | |
14622 | low = mid + 1; | |
14623 | } | |
14624 | gdb_assert (low == high); | |
14625 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
14626 | { | |
10b3939b | 14627 | if (low == 0) |
8a3fe4f8 AC |
14628 | error (_("Dwarf Error: could not find partial DIE containing " |
14629 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
14630 | (long) offset, bfd_get_filename (objfile->obfd)); |
14631 | ||
ae038cb0 DJ |
14632 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
14633 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
14634 | } | |
14635 | else | |
14636 | { | |
14637 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
14638 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
14639 | && offset >= this_cu->offset + this_cu->length) | |
c764a876 | 14640 | error (_("invalid dwarf2 offset %u"), offset); |
ae038cb0 DJ |
14641 | gdb_assert (offset < this_cu->offset + this_cu->length); |
14642 | return this_cu; | |
14643 | } | |
14644 | } | |
14645 | ||
10b3939b DJ |
14646 | /* Locate the compilation unit from OBJFILE which is located at exactly |
14647 | OFFSET. Raises an error on failure. */ | |
14648 | ||
ae038cb0 | 14649 | static struct dwarf2_per_cu_data * |
c764a876 | 14650 | dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile) |
ae038cb0 DJ |
14651 | { |
14652 | struct dwarf2_per_cu_data *this_cu; | |
9a619af0 | 14653 | |
ae038cb0 DJ |
14654 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); |
14655 | if (this_cu->offset != offset) | |
c764a876 | 14656 | error (_("no compilation unit with offset %u."), offset); |
ae038cb0 DJ |
14657 | return this_cu; |
14658 | } | |
14659 | ||
9816fde3 | 14660 | /* Initialize dwarf2_cu CU for OBJFILE in a pre-allocated space. */ |
93311388 | 14661 | |
9816fde3 JK |
14662 | static void |
14663 | init_one_comp_unit (struct dwarf2_cu *cu, struct objfile *objfile) | |
93311388 | 14664 | { |
9816fde3 | 14665 | memset (cu, 0, sizeof (*cu)); |
93311388 DE |
14666 | cu->objfile = objfile; |
14667 | obstack_init (&cu->comp_unit_obstack); | |
9816fde3 JK |
14668 | } |
14669 | ||
14670 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
14671 | ||
14672 | static void | |
14673 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die) | |
14674 | { | |
14675 | struct attribute *attr; | |
14676 | ||
14677 | /* Set the language we're debugging. */ | |
14678 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
14679 | if (attr) | |
14680 | set_cu_language (DW_UNSND (attr), cu); | |
14681 | else | |
9cded63f TT |
14682 | { |
14683 | cu->language = language_minimal; | |
14684 | cu->language_defn = language_def (cu->language); | |
14685 | } | |
93311388 DE |
14686 | } |
14687 | ||
ae038cb0 DJ |
14688 | /* Release one cached compilation unit, CU. We unlink it from the tree |
14689 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
14690 | the caller is responsible for that. |
14691 | NOTE: DATA is a void * because this function is also used as a | |
14692 | cleanup routine. */ | |
ae038cb0 DJ |
14693 | |
14694 | static void | |
14695 | free_one_comp_unit (void *data) | |
14696 | { | |
14697 | struct dwarf2_cu *cu = data; | |
14698 | ||
14699 | if (cu->per_cu != NULL) | |
14700 | cu->per_cu->cu = NULL; | |
14701 | cu->per_cu = NULL; | |
14702 | ||
14703 | obstack_free (&cu->comp_unit_obstack, NULL); | |
14704 | ||
14705 | xfree (cu); | |
14706 | } | |
14707 | ||
72bf9492 | 14708 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
14709 | when we're finished with it. We can't free the pointer itself, but be |
14710 | sure to unlink it from the cache. Also release any associated storage | |
14711 | and perform cache maintenance. | |
72bf9492 DJ |
14712 | |
14713 | Only used during partial symbol parsing. */ | |
14714 | ||
14715 | static void | |
14716 | free_stack_comp_unit (void *data) | |
14717 | { | |
14718 | struct dwarf2_cu *cu = data; | |
14719 | ||
14720 | obstack_free (&cu->comp_unit_obstack, NULL); | |
14721 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
14722 | |
14723 | if (cu->per_cu != NULL) | |
14724 | { | |
14725 | /* This compilation unit is on the stack in our caller, so we | |
14726 | should not xfree it. Just unlink it. */ | |
14727 | cu->per_cu->cu = NULL; | |
14728 | cu->per_cu = NULL; | |
14729 | ||
14730 | /* If we had a per-cu pointer, then we may have other compilation | |
14731 | units loaded, so age them now. */ | |
14732 | age_cached_comp_units (); | |
14733 | } | |
14734 | } | |
14735 | ||
14736 | /* Free all cached compilation units. */ | |
14737 | ||
14738 | static void | |
14739 | free_cached_comp_units (void *data) | |
14740 | { | |
14741 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14742 | ||
14743 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14744 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14745 | while (per_cu != NULL) | |
14746 | { | |
14747 | struct dwarf2_per_cu_data *next_cu; | |
14748 | ||
14749 | next_cu = per_cu->cu->read_in_chain; | |
14750 | ||
14751 | free_one_comp_unit (per_cu->cu); | |
14752 | *last_chain = next_cu; | |
14753 | ||
14754 | per_cu = next_cu; | |
14755 | } | |
14756 | } | |
14757 | ||
14758 | /* Increase the age counter on each cached compilation unit, and free | |
14759 | any that are too old. */ | |
14760 | ||
14761 | static void | |
14762 | age_cached_comp_units (void) | |
14763 | { | |
14764 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14765 | ||
14766 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
14767 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14768 | while (per_cu != NULL) | |
14769 | { | |
14770 | per_cu->cu->last_used ++; | |
14771 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
14772 | dwarf2_mark (per_cu->cu); | |
14773 | per_cu = per_cu->cu->read_in_chain; | |
14774 | } | |
14775 | ||
14776 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14777 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14778 | while (per_cu != NULL) | |
14779 | { | |
14780 | struct dwarf2_per_cu_data *next_cu; | |
14781 | ||
14782 | next_cu = per_cu->cu->read_in_chain; | |
14783 | ||
14784 | if (!per_cu->cu->mark) | |
14785 | { | |
14786 | free_one_comp_unit (per_cu->cu); | |
14787 | *last_chain = next_cu; | |
14788 | } | |
14789 | else | |
14790 | last_chain = &per_cu->cu->read_in_chain; | |
14791 | ||
14792 | per_cu = next_cu; | |
14793 | } | |
14794 | } | |
14795 | ||
14796 | /* Remove a single compilation unit from the cache. */ | |
14797 | ||
14798 | static void | |
14799 | free_one_cached_comp_unit (void *target_cu) | |
14800 | { | |
14801 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
14802 | ||
14803 | per_cu = dwarf2_per_objfile->read_in_chain; | |
14804 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
14805 | while (per_cu != NULL) | |
14806 | { | |
14807 | struct dwarf2_per_cu_data *next_cu; | |
14808 | ||
14809 | next_cu = per_cu->cu->read_in_chain; | |
14810 | ||
14811 | if (per_cu->cu == target_cu) | |
14812 | { | |
14813 | free_one_comp_unit (per_cu->cu); | |
14814 | *last_chain = next_cu; | |
14815 | break; | |
14816 | } | |
14817 | else | |
14818 | last_chain = &per_cu->cu->read_in_chain; | |
14819 | ||
14820 | per_cu = next_cu; | |
14821 | } | |
14822 | } | |
14823 | ||
fe3e1990 DJ |
14824 | /* Release all extra memory associated with OBJFILE. */ |
14825 | ||
14826 | void | |
14827 | dwarf2_free_objfile (struct objfile *objfile) | |
14828 | { | |
14829 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
14830 | ||
14831 | if (dwarf2_per_objfile == NULL) | |
14832 | return; | |
14833 | ||
14834 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
14835 | free_cached_comp_units (NULL); | |
14836 | ||
7b9f3c50 DE |
14837 | if (dwarf2_per_objfile->quick_file_names_table) |
14838 | htab_delete (dwarf2_per_objfile->quick_file_names_table); | |
9291a0cd | 14839 | |
fe3e1990 DJ |
14840 | /* Everything else should be on the objfile obstack. */ |
14841 | } | |
14842 | ||
1c379e20 DJ |
14843 | /* A pair of DIE offset and GDB type pointer. We store these |
14844 | in a hash table separate from the DIEs, and preserve them | |
14845 | when the DIEs are flushed out of cache. */ | |
14846 | ||
14847 | struct dwarf2_offset_and_type | |
14848 | { | |
14849 | unsigned int offset; | |
14850 | struct type *type; | |
14851 | }; | |
14852 | ||
14853 | /* Hash function for a dwarf2_offset_and_type. */ | |
14854 | ||
14855 | static hashval_t | |
14856 | offset_and_type_hash (const void *item) | |
14857 | { | |
14858 | const struct dwarf2_offset_and_type *ofs = item; | |
9a619af0 | 14859 | |
1c379e20 DJ |
14860 | return ofs->offset; |
14861 | } | |
14862 | ||
14863 | /* Equality function for a dwarf2_offset_and_type. */ | |
14864 | ||
14865 | static int | |
14866 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
14867 | { | |
14868 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
14869 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 14870 | |
1c379e20 DJ |
14871 | return ofs_lhs->offset == ofs_rhs->offset; |
14872 | } | |
14873 | ||
14874 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
14875 | table if necessary. For convenience, return TYPE. |
14876 | ||
14877 | The DIEs reading must have careful ordering to: | |
14878 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
14879 | reading current DIE. | |
14880 | * Not trying to dereference contents of still incompletely read in types | |
14881 | while reading in other DIEs. | |
14882 | * Enable referencing still incompletely read in types just by a pointer to | |
14883 | the type without accessing its fields. | |
14884 | ||
14885 | Therefore caller should follow these rules: | |
14886 | * Try to fetch any prerequisite types we may need to build this DIE type | |
14887 | before building the type and calling set_die_type. | |
e71ec853 | 14888 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
14889 | possible before fetching more types to complete the current type. |
14890 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 14891 | |
f792889a | 14892 | static struct type * |
1c379e20 DJ |
14893 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
14894 | { | |
14895 | struct dwarf2_offset_and_type **slot, ofs; | |
673bfd45 DE |
14896 | struct objfile *objfile = cu->objfile; |
14897 | htab_t *type_hash_ptr; | |
1c379e20 | 14898 | |
b4ba55a1 JB |
14899 | /* For Ada types, make sure that the gnat-specific data is always |
14900 | initialized (if not already set). There are a few types where | |
14901 | we should not be doing so, because the type-specific area is | |
14902 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
14903 | where the type-specific area is used to store the floatformat). | |
14904 | But this is not a problem, because the gnat-specific information | |
14905 | is actually not needed for these types. */ | |
14906 | if (need_gnat_info (cu) | |
14907 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
14908 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
14909 | && !HAVE_GNAT_AUX_INFO (type)) | |
14910 | INIT_GNAT_SPECIFIC (type); | |
14911 | ||
673bfd45 DE |
14912 | if (cu->per_cu->from_debug_types) |
14913 | type_hash_ptr = &dwarf2_per_objfile->debug_types_type_hash; | |
14914 | else | |
14915 | type_hash_ptr = &dwarf2_per_objfile->debug_info_type_hash; | |
14916 | ||
14917 | if (*type_hash_ptr == NULL) | |
f792889a | 14918 | { |
673bfd45 DE |
14919 | *type_hash_ptr |
14920 | = htab_create_alloc_ex (127, | |
f792889a DJ |
14921 | offset_and_type_hash, |
14922 | offset_and_type_eq, | |
14923 | NULL, | |
673bfd45 | 14924 | &objfile->objfile_obstack, |
f792889a DJ |
14925 | hashtab_obstack_allocate, |
14926 | dummy_obstack_deallocate); | |
f792889a | 14927 | } |
1c379e20 DJ |
14928 | |
14929 | ofs.offset = die->offset; | |
14930 | ofs.type = type; | |
14931 | slot = (struct dwarf2_offset_and_type **) | |
673bfd45 | 14932 | htab_find_slot_with_hash (*type_hash_ptr, &ofs, ofs.offset, INSERT); |
7e314c57 JK |
14933 | if (*slot) |
14934 | complaint (&symfile_complaints, | |
14935 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
14936 | die->offset); | |
673bfd45 | 14937 | *slot = obstack_alloc (&objfile->objfile_obstack, sizeof (**slot)); |
1c379e20 | 14938 | **slot = ofs; |
f792889a | 14939 | return type; |
1c379e20 DJ |
14940 | } |
14941 | ||
673bfd45 DE |
14942 | /* Look up the type for the die at DIE_OFFSET in the appropriate type_hash |
14943 | table, or return NULL if the die does not have a saved type. */ | |
1c379e20 DJ |
14944 | |
14945 | static struct type * | |
673bfd45 DE |
14946 | get_die_type_at_offset (unsigned int offset, |
14947 | struct dwarf2_per_cu_data *per_cu) | |
1c379e20 DJ |
14948 | { |
14949 | struct dwarf2_offset_and_type *slot, ofs; | |
673bfd45 | 14950 | htab_t type_hash; |
f792889a | 14951 | |
673bfd45 DE |
14952 | if (per_cu->from_debug_types) |
14953 | type_hash = dwarf2_per_objfile->debug_types_type_hash; | |
14954 | else | |
14955 | type_hash = dwarf2_per_objfile->debug_info_type_hash; | |
f792889a DJ |
14956 | if (type_hash == NULL) |
14957 | return NULL; | |
1c379e20 | 14958 | |
673bfd45 | 14959 | ofs.offset = offset; |
1c379e20 DJ |
14960 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); |
14961 | if (slot) | |
14962 | return slot->type; | |
14963 | else | |
14964 | return NULL; | |
14965 | } | |
14966 | ||
673bfd45 DE |
14967 | /* Look up the type for DIE in the appropriate type_hash table, |
14968 | or return NULL if DIE does not have a saved type. */ | |
14969 | ||
14970 | static struct type * | |
14971 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
14972 | { | |
14973 | return get_die_type_at_offset (die->offset, cu->per_cu); | |
14974 | } | |
14975 | ||
10b3939b DJ |
14976 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
14977 | ||
14978 | static void | |
14979 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
14980 | struct dwarf2_per_cu_data *ref_per_cu) | |
14981 | { | |
14982 | void **slot; | |
14983 | ||
14984 | if (cu->dependencies == NULL) | |
14985 | cu->dependencies | |
14986 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
14987 | NULL, &cu->comp_unit_obstack, | |
14988 | hashtab_obstack_allocate, | |
14989 | dummy_obstack_deallocate); | |
14990 | ||
14991 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
14992 | if (*slot == NULL) | |
14993 | *slot = ref_per_cu; | |
14994 | } | |
1c379e20 | 14995 | |
f504f079 DE |
14996 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
14997 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
14998 | cache that we must keep because we are keeping CU. */ |
14999 | ||
10b3939b DJ |
15000 | static int |
15001 | dwarf2_mark_helper (void **slot, void *data) | |
15002 | { | |
15003 | struct dwarf2_per_cu_data *per_cu; | |
15004 | ||
15005 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
15006 | if (per_cu->cu->mark) | |
15007 | return 1; | |
15008 | per_cu->cu->mark = 1; | |
15009 | ||
15010 | if (per_cu->cu->dependencies != NULL) | |
15011 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
15012 | ||
15013 | return 1; | |
15014 | } | |
15015 | ||
f504f079 DE |
15016 | /* Set the mark field in CU and in every other compilation unit in the |
15017 | cache that we must keep because we are keeping CU. */ | |
15018 | ||
ae038cb0 DJ |
15019 | static void |
15020 | dwarf2_mark (struct dwarf2_cu *cu) | |
15021 | { | |
15022 | if (cu->mark) | |
15023 | return; | |
15024 | cu->mark = 1; | |
10b3939b DJ |
15025 | if (cu->dependencies != NULL) |
15026 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
15027 | } |
15028 | ||
15029 | static void | |
15030 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
15031 | { | |
15032 | while (per_cu) | |
15033 | { | |
15034 | per_cu->cu->mark = 0; | |
15035 | per_cu = per_cu->cu->read_in_chain; | |
15036 | } | |
72bf9492 DJ |
15037 | } |
15038 | ||
72bf9492 DJ |
15039 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
15040 | is its offset in .debug_info for this objfile. */ | |
15041 | ||
15042 | static hashval_t | |
15043 | partial_die_hash (const void *item) | |
15044 | { | |
15045 | const struct partial_die_info *part_die = item; | |
9a619af0 | 15046 | |
72bf9492 DJ |
15047 | return part_die->offset; |
15048 | } | |
15049 | ||
15050 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
15051 | are equal if they have the same offset. */ | |
15052 | ||
15053 | static int | |
15054 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
15055 | { | |
15056 | const struct partial_die_info *part_die_lhs = item_lhs; | |
15057 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 15058 | |
72bf9492 DJ |
15059 | return part_die_lhs->offset == part_die_rhs->offset; |
15060 | } | |
15061 | ||
ae038cb0 DJ |
15062 | static struct cmd_list_element *set_dwarf2_cmdlist; |
15063 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
15064 | ||
15065 | static void | |
15066 | set_dwarf2_cmd (char *args, int from_tty) | |
15067 | { | |
15068 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
15069 | } | |
15070 | ||
15071 | static void | |
15072 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 15073 | { |
ae038cb0 DJ |
15074 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
15075 | } | |
15076 | ||
dce234bc PP |
15077 | /* If section described by INFO was mmapped, munmap it now. */ |
15078 | ||
15079 | static void | |
15080 | munmap_section_buffer (struct dwarf2_section_info *info) | |
15081 | { | |
15082 | if (info->was_mmapped) | |
15083 | { | |
15084 | #ifdef HAVE_MMAP | |
15085 | intptr_t begin = (intptr_t) info->buffer; | |
15086 | intptr_t map_begin = begin & ~(pagesize - 1); | |
15087 | size_t map_length = info->size + begin - map_begin; | |
9a619af0 | 15088 | |
dce234bc PP |
15089 | gdb_assert (munmap ((void *) map_begin, map_length) == 0); |
15090 | #else | |
15091 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
f3574227 | 15092 | gdb_assert_not_reached ("no mmap support"); |
dce234bc PP |
15093 | #endif |
15094 | } | |
15095 | } | |
15096 | ||
15097 | /* munmap debug sections for OBJFILE, if necessary. */ | |
15098 | ||
15099 | static void | |
c1bd65d0 | 15100 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
15101 | { |
15102 | struct dwarf2_per_objfile *data = d; | |
9a619af0 | 15103 | |
16be1145 DE |
15104 | /* This is sorted according to the order they're defined in to make it easier |
15105 | to keep in sync. */ | |
dce234bc PP |
15106 | munmap_section_buffer (&data->info); |
15107 | munmap_section_buffer (&data->abbrev); | |
15108 | munmap_section_buffer (&data->line); | |
16be1145 | 15109 | munmap_section_buffer (&data->loc); |
dce234bc | 15110 | munmap_section_buffer (&data->macinfo); |
16be1145 | 15111 | munmap_section_buffer (&data->str); |
dce234bc | 15112 | munmap_section_buffer (&data->ranges); |
16be1145 | 15113 | munmap_section_buffer (&data->types); |
dce234bc PP |
15114 | munmap_section_buffer (&data->frame); |
15115 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd TT |
15116 | munmap_section_buffer (&data->gdb_index); |
15117 | } | |
15118 | ||
15119 | \f | |
ae2de4f8 | 15120 | /* The "save gdb-index" command. */ |
9291a0cd TT |
15121 | |
15122 | /* The contents of the hash table we create when building the string | |
15123 | table. */ | |
15124 | struct strtab_entry | |
15125 | { | |
15126 | offset_type offset; | |
15127 | const char *str; | |
15128 | }; | |
15129 | ||
15130 | /* Hash function for a strtab_entry. */ | |
b89be57b | 15131 | |
9291a0cd TT |
15132 | static hashval_t |
15133 | hash_strtab_entry (const void *e) | |
15134 | { | |
15135 | const struct strtab_entry *entry = e; | |
15136 | return mapped_index_string_hash (entry->str); | |
15137 | } | |
15138 | ||
15139 | /* Equality function for a strtab_entry. */ | |
b89be57b | 15140 | |
9291a0cd TT |
15141 | static int |
15142 | eq_strtab_entry (const void *a, const void *b) | |
15143 | { | |
15144 | const struct strtab_entry *ea = a; | |
15145 | const struct strtab_entry *eb = b; | |
15146 | return !strcmp (ea->str, eb->str); | |
15147 | } | |
15148 | ||
15149 | /* Create a strtab_entry hash table. */ | |
b89be57b | 15150 | |
9291a0cd TT |
15151 | static htab_t |
15152 | create_strtab (void) | |
15153 | { | |
15154 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
15155 | xfree, xcalloc, xfree); | |
15156 | } | |
15157 | ||
15158 | /* Add a string to the constant pool. Return the string's offset in | |
15159 | host order. */ | |
b89be57b | 15160 | |
9291a0cd TT |
15161 | static offset_type |
15162 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
15163 | { | |
15164 | void **slot; | |
15165 | struct strtab_entry entry; | |
15166 | struct strtab_entry *result; | |
15167 | ||
15168 | entry.str = str; | |
15169 | slot = htab_find_slot (table, &entry, INSERT); | |
15170 | if (*slot) | |
15171 | result = *slot; | |
15172 | else | |
15173 | { | |
15174 | result = XNEW (struct strtab_entry); | |
15175 | result->offset = obstack_object_size (cpool); | |
15176 | result->str = str; | |
15177 | obstack_grow_str0 (cpool, str); | |
15178 | *slot = result; | |
15179 | } | |
15180 | return result->offset; | |
15181 | } | |
15182 | ||
15183 | /* An entry in the symbol table. */ | |
15184 | struct symtab_index_entry | |
15185 | { | |
15186 | /* The name of the symbol. */ | |
15187 | const char *name; | |
15188 | /* The offset of the name in the constant pool. */ | |
15189 | offset_type index_offset; | |
15190 | /* A sorted vector of the indices of all the CUs that hold an object | |
15191 | of this name. */ | |
15192 | VEC (offset_type) *cu_indices; | |
15193 | }; | |
15194 | ||
15195 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
15196 | struct mapped_symtab | |
15197 | { | |
15198 | offset_type n_elements; | |
15199 | offset_type size; | |
15200 | struct symtab_index_entry **data; | |
15201 | }; | |
15202 | ||
15203 | /* Hash function for a symtab_index_entry. */ | |
b89be57b | 15204 | |
9291a0cd TT |
15205 | static hashval_t |
15206 | hash_symtab_entry (const void *e) | |
15207 | { | |
15208 | const struct symtab_index_entry *entry = e; | |
15209 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
15210 | sizeof (offset_type) * VEC_length (offset_type, | |
15211 | entry->cu_indices), | |
15212 | 0); | |
15213 | } | |
15214 | ||
15215 | /* Equality function for a symtab_index_entry. */ | |
b89be57b | 15216 | |
9291a0cd TT |
15217 | static int |
15218 | eq_symtab_entry (const void *a, const void *b) | |
15219 | { | |
15220 | const struct symtab_index_entry *ea = a; | |
15221 | const struct symtab_index_entry *eb = b; | |
15222 | int len = VEC_length (offset_type, ea->cu_indices); | |
15223 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
15224 | return 0; | |
15225 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
15226 | VEC_address (offset_type, eb->cu_indices), | |
15227 | sizeof (offset_type) * len); | |
15228 | } | |
15229 | ||
15230 | /* Destroy a symtab_index_entry. */ | |
b89be57b | 15231 | |
9291a0cd TT |
15232 | static void |
15233 | delete_symtab_entry (void *p) | |
15234 | { | |
15235 | struct symtab_index_entry *entry = p; | |
15236 | VEC_free (offset_type, entry->cu_indices); | |
15237 | xfree (entry); | |
15238 | } | |
15239 | ||
15240 | /* Create a hash table holding symtab_index_entry objects. */ | |
b89be57b | 15241 | |
9291a0cd | 15242 | static htab_t |
3876f04e | 15243 | create_symbol_hash_table (void) |
9291a0cd TT |
15244 | { |
15245 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
15246 | delete_symtab_entry, xcalloc, xfree); | |
15247 | } | |
15248 | ||
15249 | /* Create a new mapped symtab object. */ | |
b89be57b | 15250 | |
9291a0cd TT |
15251 | static struct mapped_symtab * |
15252 | create_mapped_symtab (void) | |
15253 | { | |
15254 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
15255 | symtab->n_elements = 0; | |
15256 | symtab->size = 1024; | |
15257 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
15258 | return symtab; | |
15259 | } | |
15260 | ||
15261 | /* Destroy a mapped_symtab. */ | |
b89be57b | 15262 | |
9291a0cd TT |
15263 | static void |
15264 | cleanup_mapped_symtab (void *p) | |
15265 | { | |
15266 | struct mapped_symtab *symtab = p; | |
15267 | /* The contents of the array are freed when the other hash table is | |
15268 | destroyed. */ | |
15269 | xfree (symtab->data); | |
15270 | xfree (symtab); | |
15271 | } | |
15272 | ||
15273 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
15274 | the slot. */ | |
b89be57b | 15275 | |
9291a0cd TT |
15276 | static struct symtab_index_entry ** |
15277 | find_slot (struct mapped_symtab *symtab, const char *name) | |
15278 | { | |
15279 | offset_type index, step, hash = mapped_index_string_hash (name); | |
15280 | ||
15281 | index = hash & (symtab->size - 1); | |
15282 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
15283 | ||
15284 | for (;;) | |
15285 | { | |
15286 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
15287 | return &symtab->data[index]; | |
15288 | index = (index + step) & (symtab->size - 1); | |
15289 | } | |
15290 | } | |
15291 | ||
15292 | /* Expand SYMTAB's hash table. */ | |
b89be57b | 15293 | |
9291a0cd TT |
15294 | static void |
15295 | hash_expand (struct mapped_symtab *symtab) | |
15296 | { | |
15297 | offset_type old_size = symtab->size; | |
15298 | offset_type i; | |
15299 | struct symtab_index_entry **old_entries = symtab->data; | |
15300 | ||
15301 | symtab->size *= 2; | |
15302 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
15303 | ||
15304 | for (i = 0; i < old_size; ++i) | |
15305 | { | |
15306 | if (old_entries[i]) | |
15307 | { | |
15308 | struct symtab_index_entry **slot = find_slot (symtab, | |
15309 | old_entries[i]->name); | |
15310 | *slot = old_entries[i]; | |
15311 | } | |
15312 | } | |
15313 | ||
15314 | xfree (old_entries); | |
15315 | } | |
15316 | ||
15317 | /* Add an entry to SYMTAB. NAME is the name of the symbol. CU_INDEX | |
15318 | is the index of the CU in which the symbol appears. */ | |
b89be57b | 15319 | |
9291a0cd TT |
15320 | static void |
15321 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
15322 | offset_type cu_index) | |
15323 | { | |
15324 | struct symtab_index_entry **slot; | |
15325 | ||
15326 | ++symtab->n_elements; | |
15327 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
15328 | hash_expand (symtab); | |
15329 | ||
15330 | slot = find_slot (symtab, name); | |
15331 | if (!*slot) | |
15332 | { | |
15333 | *slot = XNEW (struct symtab_index_entry); | |
15334 | (*slot)->name = name; | |
15335 | (*slot)->cu_indices = NULL; | |
15336 | } | |
15337 | /* Don't push an index twice. Due to how we add entries we only | |
15338 | have to check the last one. */ | |
15339 | if (VEC_empty (offset_type, (*slot)->cu_indices) | |
15340 | || VEC_length (offset_type, (*slot)->cu_indices) != cu_index) | |
15341 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index); | |
15342 | } | |
15343 | ||
15344 | /* Add a vector of indices to the constant pool. */ | |
b89be57b | 15345 | |
9291a0cd | 15346 | static offset_type |
3876f04e | 15347 | add_indices_to_cpool (htab_t symbol_hash_table, struct obstack *cpool, |
9291a0cd TT |
15348 | struct symtab_index_entry *entry) |
15349 | { | |
15350 | void **slot; | |
15351 | ||
3876f04e | 15352 | slot = htab_find_slot (symbol_hash_table, entry, INSERT); |
9291a0cd TT |
15353 | if (!*slot) |
15354 | { | |
15355 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
15356 | offset_type val = MAYBE_SWAP (len); | |
15357 | offset_type iter; | |
15358 | int i; | |
15359 | ||
15360 | *slot = entry; | |
15361 | entry->index_offset = obstack_object_size (cpool); | |
15362 | ||
15363 | obstack_grow (cpool, &val, sizeof (val)); | |
15364 | for (i = 0; | |
15365 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
15366 | ++i) | |
15367 | { | |
15368 | val = MAYBE_SWAP (iter); | |
15369 | obstack_grow (cpool, &val, sizeof (val)); | |
15370 | } | |
15371 | } | |
15372 | else | |
15373 | { | |
15374 | struct symtab_index_entry *old_entry = *slot; | |
15375 | entry->index_offset = old_entry->index_offset; | |
15376 | entry = old_entry; | |
15377 | } | |
15378 | return entry->index_offset; | |
15379 | } | |
15380 | ||
15381 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
15382 | constant pool entries going into the obstack CPOOL. */ | |
b89be57b | 15383 | |
9291a0cd TT |
15384 | static void |
15385 | write_hash_table (struct mapped_symtab *symtab, | |
15386 | struct obstack *output, struct obstack *cpool) | |
15387 | { | |
15388 | offset_type i; | |
3876f04e | 15389 | htab_t symbol_hash_table; |
9291a0cd TT |
15390 | htab_t str_table; |
15391 | ||
3876f04e | 15392 | symbol_hash_table = create_symbol_hash_table (); |
9291a0cd | 15393 | str_table = create_strtab (); |
3876f04e | 15394 | |
9291a0cd TT |
15395 | /* We add all the index vectors to the constant pool first, to |
15396 | ensure alignment is ok. */ | |
15397 | for (i = 0; i < symtab->size; ++i) | |
15398 | { | |
15399 | if (symtab->data[i]) | |
3876f04e | 15400 | add_indices_to_cpool (symbol_hash_table, cpool, symtab->data[i]); |
9291a0cd TT |
15401 | } |
15402 | ||
15403 | /* Now write out the hash table. */ | |
15404 | for (i = 0; i < symtab->size; ++i) | |
15405 | { | |
15406 | offset_type str_off, vec_off; | |
15407 | ||
15408 | if (symtab->data[i]) | |
15409 | { | |
15410 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
15411 | vec_off = symtab->data[i]->index_offset; | |
15412 | } | |
15413 | else | |
15414 | { | |
15415 | /* While 0 is a valid constant pool index, it is not valid | |
15416 | to have 0 for both offsets. */ | |
15417 | str_off = 0; | |
15418 | vec_off = 0; | |
15419 | } | |
15420 | ||
15421 | str_off = MAYBE_SWAP (str_off); | |
15422 | vec_off = MAYBE_SWAP (vec_off); | |
15423 | ||
15424 | obstack_grow (output, &str_off, sizeof (str_off)); | |
15425 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
15426 | } | |
15427 | ||
15428 | htab_delete (str_table); | |
3876f04e | 15429 | htab_delete (symbol_hash_table); |
9291a0cd TT |
15430 | } |
15431 | ||
0a5429f6 DE |
15432 | /* Struct to map psymtab to CU index in the index file. */ |
15433 | struct psymtab_cu_index_map | |
15434 | { | |
15435 | struct partial_symtab *psymtab; | |
15436 | unsigned int cu_index; | |
15437 | }; | |
15438 | ||
15439 | static hashval_t | |
15440 | hash_psymtab_cu_index (const void *item) | |
15441 | { | |
15442 | const struct psymtab_cu_index_map *map = item; | |
15443 | ||
15444 | return htab_hash_pointer (map->psymtab); | |
15445 | } | |
15446 | ||
15447 | static int | |
15448 | eq_psymtab_cu_index (const void *item_lhs, const void *item_rhs) | |
15449 | { | |
15450 | const struct psymtab_cu_index_map *lhs = item_lhs; | |
15451 | const struct psymtab_cu_index_map *rhs = item_rhs; | |
15452 | ||
15453 | return lhs->psymtab == rhs->psymtab; | |
15454 | } | |
15455 | ||
15456 | /* Helper struct for building the address table. */ | |
15457 | struct addrmap_index_data | |
15458 | { | |
15459 | struct objfile *objfile; | |
15460 | struct obstack *addr_obstack; | |
15461 | htab_t cu_index_htab; | |
15462 | ||
15463 | /* Non-zero if the previous_* fields are valid. | |
15464 | We can't write an entry until we see the next entry (since it is only then | |
15465 | that we know the end of the entry). */ | |
15466 | int previous_valid; | |
15467 | /* Index of the CU in the table of all CUs in the index file. */ | |
15468 | unsigned int previous_cu_index; | |
0963b4bd | 15469 | /* Start address of the CU. */ |
0a5429f6 DE |
15470 | CORE_ADDR previous_cu_start; |
15471 | }; | |
15472 | ||
15473 | /* Write an address entry to OBSTACK. */ | |
b89be57b | 15474 | |
9291a0cd | 15475 | static void |
0a5429f6 DE |
15476 | add_address_entry (struct objfile *objfile, struct obstack *obstack, |
15477 | CORE_ADDR start, CORE_ADDR end, unsigned int cu_index) | |
9291a0cd | 15478 | { |
0a5429f6 | 15479 | offset_type cu_index_to_write; |
9291a0cd TT |
15480 | char addr[8]; |
15481 | CORE_ADDR baseaddr; | |
15482 | ||
15483 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
15484 | ||
0a5429f6 DE |
15485 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, start - baseaddr); |
15486 | obstack_grow (obstack, addr, 8); | |
15487 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, end - baseaddr); | |
15488 | obstack_grow (obstack, addr, 8); | |
15489 | cu_index_to_write = MAYBE_SWAP (cu_index); | |
15490 | obstack_grow (obstack, &cu_index_to_write, sizeof (offset_type)); | |
15491 | } | |
15492 | ||
15493 | /* Worker function for traversing an addrmap to build the address table. */ | |
15494 | ||
15495 | static int | |
15496 | add_address_entry_worker (void *datap, CORE_ADDR start_addr, void *obj) | |
15497 | { | |
15498 | struct addrmap_index_data *data = datap; | |
15499 | struct partial_symtab *pst = obj; | |
15500 | offset_type cu_index; | |
15501 | void **slot; | |
15502 | ||
15503 | if (data->previous_valid) | |
15504 | add_address_entry (data->objfile, data->addr_obstack, | |
15505 | data->previous_cu_start, start_addr, | |
15506 | data->previous_cu_index); | |
15507 | ||
15508 | data->previous_cu_start = start_addr; | |
15509 | if (pst != NULL) | |
15510 | { | |
15511 | struct psymtab_cu_index_map find_map, *map; | |
15512 | find_map.psymtab = pst; | |
15513 | map = htab_find (data->cu_index_htab, &find_map); | |
15514 | gdb_assert (map != NULL); | |
15515 | data->previous_cu_index = map->cu_index; | |
15516 | data->previous_valid = 1; | |
15517 | } | |
15518 | else | |
15519 | data->previous_valid = 0; | |
15520 | ||
15521 | return 0; | |
15522 | } | |
15523 | ||
15524 | /* Write OBJFILE's address map to OBSTACK. | |
15525 | CU_INDEX_HTAB is used to map addrmap entries to their CU indices | |
15526 | in the index file. */ | |
15527 | ||
15528 | static void | |
15529 | write_address_map (struct objfile *objfile, struct obstack *obstack, | |
15530 | htab_t cu_index_htab) | |
15531 | { | |
15532 | struct addrmap_index_data addrmap_index_data; | |
15533 | ||
15534 | /* When writing the address table, we have to cope with the fact that | |
15535 | the addrmap iterator only provides the start of a region; we have to | |
15536 | wait until the next invocation to get the start of the next region. */ | |
15537 | ||
15538 | addrmap_index_data.objfile = objfile; | |
15539 | addrmap_index_data.addr_obstack = obstack; | |
15540 | addrmap_index_data.cu_index_htab = cu_index_htab; | |
15541 | addrmap_index_data.previous_valid = 0; | |
15542 | ||
15543 | addrmap_foreach (objfile->psymtabs_addrmap, add_address_entry_worker, | |
15544 | &addrmap_index_data); | |
15545 | ||
15546 | /* It's highly unlikely the last entry (end address = 0xff...ff) | |
15547 | is valid, but we should still handle it. | |
15548 | The end address is recorded as the start of the next region, but that | |
15549 | doesn't work here. To cope we pass 0xff...ff, this is a rare situation | |
15550 | anyway. */ | |
15551 | if (addrmap_index_data.previous_valid) | |
15552 | add_address_entry (objfile, obstack, | |
15553 | addrmap_index_data.previous_cu_start, (CORE_ADDR) -1, | |
15554 | addrmap_index_data.previous_cu_index); | |
9291a0cd TT |
15555 | } |
15556 | ||
15557 | /* Add a list of partial symbols to SYMTAB. */ | |
b89be57b | 15558 | |
9291a0cd TT |
15559 | static void |
15560 | write_psymbols (struct mapped_symtab *symtab, | |
987d643c | 15561 | htab_t psyms_seen, |
9291a0cd TT |
15562 | struct partial_symbol **psymp, |
15563 | int count, | |
987d643c TT |
15564 | offset_type cu_index, |
15565 | int is_static) | |
9291a0cd TT |
15566 | { |
15567 | for (; count-- > 0; ++psymp) | |
15568 | { | |
987d643c TT |
15569 | void **slot, *lookup; |
15570 | ||
9291a0cd TT |
15571 | if (SYMBOL_LANGUAGE (*psymp) == language_ada) |
15572 | error (_("Ada is not currently supported by the index")); | |
987d643c TT |
15573 | |
15574 | /* We only want to add a given psymbol once. However, we also | |
15575 | want to account for whether it is global or static. So, we | |
15576 | may add it twice, using slightly different values. */ | |
15577 | if (is_static) | |
15578 | { | |
15579 | uintptr_t val = 1 | (uintptr_t) *psymp; | |
15580 | ||
15581 | lookup = (void *) val; | |
15582 | } | |
15583 | else | |
15584 | lookup = *psymp; | |
15585 | ||
15586 | /* Only add a given psymbol once. */ | |
15587 | slot = htab_find_slot (psyms_seen, lookup, INSERT); | |
15588 | if (!*slot) | |
15589 | { | |
15590 | *slot = lookup; | |
15591 | add_index_entry (symtab, SYMBOL_NATURAL_NAME (*psymp), cu_index); | |
15592 | } | |
9291a0cd TT |
15593 | } |
15594 | } | |
15595 | ||
15596 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
15597 | exception if there is an error. */ | |
b89be57b | 15598 | |
9291a0cd TT |
15599 | static void |
15600 | write_obstack (FILE *file, struct obstack *obstack) | |
15601 | { | |
15602 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
15603 | file) | |
15604 | != obstack_object_size (obstack)) | |
15605 | error (_("couldn't data write to file")); | |
15606 | } | |
15607 | ||
15608 | /* Unlink a file if the argument is not NULL. */ | |
b89be57b | 15609 | |
9291a0cd TT |
15610 | static void |
15611 | unlink_if_set (void *p) | |
15612 | { | |
15613 | char **filename = p; | |
15614 | if (*filename) | |
15615 | unlink (*filename); | |
15616 | } | |
15617 | ||
1fd400ff TT |
15618 | /* A helper struct used when iterating over debug_types. */ |
15619 | struct signatured_type_index_data | |
15620 | { | |
15621 | struct objfile *objfile; | |
15622 | struct mapped_symtab *symtab; | |
15623 | struct obstack *types_list; | |
987d643c | 15624 | htab_t psyms_seen; |
1fd400ff TT |
15625 | int cu_index; |
15626 | }; | |
15627 | ||
15628 | /* A helper function that writes a single signatured_type to an | |
15629 | obstack. */ | |
b89be57b | 15630 | |
1fd400ff TT |
15631 | static int |
15632 | write_one_signatured_type (void **slot, void *d) | |
15633 | { | |
15634 | struct signatured_type_index_data *info = d; | |
15635 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
e254ef6a DE |
15636 | struct dwarf2_per_cu_data *per_cu = &entry->per_cu; |
15637 | struct partial_symtab *psymtab = per_cu->v.psymtab; | |
1fd400ff TT |
15638 | gdb_byte val[8]; |
15639 | ||
15640 | write_psymbols (info->symtab, | |
987d643c | 15641 | info->psyms_seen, |
3e43a32a MS |
15642 | info->objfile->global_psymbols.list |
15643 | + psymtab->globals_offset, | |
987d643c TT |
15644 | psymtab->n_global_syms, info->cu_index, |
15645 | 0); | |
1fd400ff | 15646 | write_psymbols (info->symtab, |
987d643c | 15647 | info->psyms_seen, |
3e43a32a MS |
15648 | info->objfile->static_psymbols.list |
15649 | + psymtab->statics_offset, | |
987d643c TT |
15650 | psymtab->n_static_syms, info->cu_index, |
15651 | 1); | |
1fd400ff TT |
15652 | |
15653 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->offset); | |
15654 | obstack_grow (info->types_list, val, 8); | |
15655 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->type_offset); | |
15656 | obstack_grow (info->types_list, val, 8); | |
15657 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
15658 | obstack_grow (info->types_list, val, 8); | |
15659 | ||
15660 | ++info->cu_index; | |
15661 | ||
15662 | return 1; | |
15663 | } | |
15664 | ||
987d643c TT |
15665 | /* A cleanup function for an htab_t. */ |
15666 | ||
15667 | static void | |
15668 | cleanup_htab (void *arg) | |
15669 | { | |
15670 | htab_delete (arg); | |
15671 | } | |
15672 | ||
9291a0cd | 15673 | /* Create an index file for OBJFILE in the directory DIR. */ |
b89be57b | 15674 | |
9291a0cd TT |
15675 | static void |
15676 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
15677 | { | |
15678 | struct cleanup *cleanup; | |
15679 | char *filename, *cleanup_filename; | |
1fd400ff TT |
15680 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
15681 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
15682 | int i; |
15683 | FILE *out_file; | |
15684 | struct mapped_symtab *symtab; | |
15685 | offset_type val, size_of_contents, total_len; | |
15686 | struct stat st; | |
15687 | char buf[8]; | |
987d643c | 15688 | htab_t psyms_seen; |
0a5429f6 DE |
15689 | htab_t cu_index_htab; |
15690 | struct psymtab_cu_index_map *psymtab_cu_index_map; | |
9291a0cd TT |
15691 | |
15692 | if (!objfile->psymtabs) | |
15693 | return; | |
15694 | if (dwarf2_per_objfile->using_index) | |
15695 | error (_("Cannot use an index to create the index")); | |
15696 | ||
15697 | if (stat (objfile->name, &st) < 0) | |
7e17e088 | 15698 | perror_with_name (objfile->name); |
9291a0cd TT |
15699 | |
15700 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
15701 | INDEX_SUFFIX, (char *) NULL); | |
15702 | cleanup = make_cleanup (xfree, filename); | |
15703 | ||
15704 | out_file = fopen (filename, "wb"); | |
15705 | if (!out_file) | |
15706 | error (_("Can't open `%s' for writing"), filename); | |
15707 | ||
15708 | cleanup_filename = filename; | |
15709 | make_cleanup (unlink_if_set, &cleanup_filename); | |
15710 | ||
15711 | symtab = create_mapped_symtab (); | |
15712 | make_cleanup (cleanup_mapped_symtab, symtab); | |
15713 | ||
15714 | obstack_init (&addr_obstack); | |
15715 | make_cleanup_obstack_free (&addr_obstack); | |
15716 | ||
15717 | obstack_init (&cu_list); | |
15718 | make_cleanup_obstack_free (&cu_list); | |
15719 | ||
1fd400ff TT |
15720 | obstack_init (&types_cu_list); |
15721 | make_cleanup_obstack_free (&types_cu_list); | |
15722 | ||
987d643c TT |
15723 | psyms_seen = htab_create_alloc (100, htab_hash_pointer, htab_eq_pointer, |
15724 | NULL, xcalloc, xfree); | |
15725 | make_cleanup (cleanup_htab, psyms_seen); | |
15726 | ||
0a5429f6 DE |
15727 | /* While we're scanning CU's create a table that maps a psymtab pointer |
15728 | (which is what addrmap records) to its index (which is what is recorded | |
15729 | in the index file). This will later be needed to write the address | |
15730 | table. */ | |
15731 | cu_index_htab = htab_create_alloc (100, | |
15732 | hash_psymtab_cu_index, | |
15733 | eq_psymtab_cu_index, | |
15734 | NULL, xcalloc, xfree); | |
15735 | make_cleanup (cleanup_htab, cu_index_htab); | |
15736 | psymtab_cu_index_map = (struct psymtab_cu_index_map *) | |
15737 | xmalloc (sizeof (struct psymtab_cu_index_map) | |
15738 | * dwarf2_per_objfile->n_comp_units); | |
15739 | make_cleanup (xfree, psymtab_cu_index_map); | |
15740 | ||
15741 | /* The CU list is already sorted, so we don't need to do additional | |
1fd400ff TT |
15742 | work here. Also, the debug_types entries do not appear in |
15743 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
15744 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
15745 | { | |
3e43a32a MS |
15746 | struct dwarf2_per_cu_data *per_cu |
15747 | = dwarf2_per_objfile->all_comp_units[i]; | |
e254ef6a | 15748 | struct partial_symtab *psymtab = per_cu->v.psymtab; |
9291a0cd | 15749 | gdb_byte val[8]; |
0a5429f6 DE |
15750 | struct psymtab_cu_index_map *map; |
15751 | void **slot; | |
9291a0cd TT |
15752 | |
15753 | write_psymbols (symtab, | |
987d643c | 15754 | psyms_seen, |
9291a0cd | 15755 | objfile->global_psymbols.list + psymtab->globals_offset, |
987d643c TT |
15756 | psymtab->n_global_syms, i, |
15757 | 0); | |
9291a0cd | 15758 | write_psymbols (symtab, |
987d643c | 15759 | psyms_seen, |
9291a0cd | 15760 | objfile->static_psymbols.list + psymtab->statics_offset, |
987d643c TT |
15761 | psymtab->n_static_syms, i, |
15762 | 1); | |
9291a0cd | 15763 | |
0a5429f6 DE |
15764 | map = &psymtab_cu_index_map[i]; |
15765 | map->psymtab = psymtab; | |
15766 | map->cu_index = i; | |
15767 | slot = htab_find_slot (cu_index_htab, map, INSERT); | |
15768 | gdb_assert (slot != NULL); | |
15769 | gdb_assert (*slot == NULL); | |
15770 | *slot = map; | |
9291a0cd | 15771 | |
e254ef6a | 15772 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->offset); |
9291a0cd | 15773 | obstack_grow (&cu_list, val, 8); |
e254ef6a | 15774 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, per_cu->length); |
9291a0cd TT |
15775 | obstack_grow (&cu_list, val, 8); |
15776 | } | |
15777 | ||
0a5429f6 DE |
15778 | /* Dump the address map. */ |
15779 | write_address_map (objfile, &addr_obstack, cu_index_htab); | |
15780 | ||
1fd400ff TT |
15781 | /* Write out the .debug_type entries, if any. */ |
15782 | if (dwarf2_per_objfile->signatured_types) | |
15783 | { | |
15784 | struct signatured_type_index_data sig_data; | |
15785 | ||
15786 | sig_data.objfile = objfile; | |
15787 | sig_data.symtab = symtab; | |
15788 | sig_data.types_list = &types_cu_list; | |
987d643c | 15789 | sig_data.psyms_seen = psyms_seen; |
1fd400ff TT |
15790 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; |
15791 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
15792 | write_one_signatured_type, &sig_data); | |
15793 | } | |
15794 | ||
9291a0cd TT |
15795 | obstack_init (&constant_pool); |
15796 | make_cleanup_obstack_free (&constant_pool); | |
15797 | obstack_init (&symtab_obstack); | |
15798 | make_cleanup_obstack_free (&symtab_obstack); | |
15799 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
15800 | ||
15801 | obstack_init (&contents); | |
15802 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 15803 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
15804 | total_len = size_of_contents; |
15805 | ||
15806 | /* The version number. */ | |
831adc1f | 15807 | val = MAYBE_SWAP (4); |
9291a0cd TT |
15808 | obstack_grow (&contents, &val, sizeof (val)); |
15809 | ||
15810 | /* The offset of the CU list from the start of the file. */ | |
15811 | val = MAYBE_SWAP (total_len); | |
15812 | obstack_grow (&contents, &val, sizeof (val)); | |
15813 | total_len += obstack_object_size (&cu_list); | |
15814 | ||
1fd400ff TT |
15815 | /* The offset of the types CU list from the start of the file. */ |
15816 | val = MAYBE_SWAP (total_len); | |
15817 | obstack_grow (&contents, &val, sizeof (val)); | |
15818 | total_len += obstack_object_size (&types_cu_list); | |
15819 | ||
9291a0cd TT |
15820 | /* The offset of the address table from the start of the file. */ |
15821 | val = MAYBE_SWAP (total_len); | |
15822 | obstack_grow (&contents, &val, sizeof (val)); | |
15823 | total_len += obstack_object_size (&addr_obstack); | |
15824 | ||
15825 | /* The offset of the symbol table from the start of the file. */ | |
15826 | val = MAYBE_SWAP (total_len); | |
15827 | obstack_grow (&contents, &val, sizeof (val)); | |
15828 | total_len += obstack_object_size (&symtab_obstack); | |
15829 | ||
15830 | /* The offset of the constant pool from the start of the file. */ | |
15831 | val = MAYBE_SWAP (total_len); | |
15832 | obstack_grow (&contents, &val, sizeof (val)); | |
15833 | total_len += obstack_object_size (&constant_pool); | |
15834 | ||
15835 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
15836 | ||
15837 | write_obstack (out_file, &contents); | |
15838 | write_obstack (out_file, &cu_list); | |
1fd400ff | 15839 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
15840 | write_obstack (out_file, &addr_obstack); |
15841 | write_obstack (out_file, &symtab_obstack); | |
15842 | write_obstack (out_file, &constant_pool); | |
15843 | ||
15844 | fclose (out_file); | |
15845 | ||
15846 | /* We want to keep the file, so we set cleanup_filename to NULL | |
15847 | here. See unlink_if_set. */ | |
15848 | cleanup_filename = NULL; | |
15849 | ||
15850 | do_cleanups (cleanup); | |
15851 | } | |
15852 | ||
15853 | /* The mapped index file format is designed to be directly mmap()able | |
15854 | on any architecture. In most cases, a datum is represented using a | |
15855 | little-endian 32-bit integer value, called an offset_type. Big | |
15856 | endian machines must byte-swap the values before using them. | |
15857 | Exceptions to this rule are noted. The data is laid out such that | |
15858 | alignment is always respected. | |
15859 | ||
15860 | A mapped index consists of several sections. | |
15861 | ||
15862 | 1. The file header. This is a sequence of values, of offset_type | |
15863 | unless otherwise noted: | |
987d643c | 15864 | |
831adc1f | 15865 | [0] The version number, currently 4. Versions 1, 2 and 3 are |
987d643c | 15866 | obsolete. |
9291a0cd | 15867 | [1] The offset, from the start of the file, of the CU list. |
987d643c TT |
15868 | [2] The offset, from the start of the file, of the types CU list. |
15869 | Note that this section can be empty, in which case this offset will | |
15870 | be equal to the next offset. | |
15871 | [3] The offset, from the start of the file, of the address section. | |
15872 | [4] The offset, from the start of the file, of the symbol table. | |
15873 | [5] The offset, from the start of the file, of the constant pool. | |
9291a0cd TT |
15874 | |
15875 | 2. The CU list. This is a sequence of pairs of 64-bit | |
1fd400ff TT |
15876 | little-endian values, sorted by the CU offset. The first element |
15877 | in each pair is the offset of a CU in the .debug_info section. The | |
15878 | second element in each pair is the length of that CU. References | |
15879 | to a CU elsewhere in the map are done using a CU index, which is | |
15880 | just the 0-based index into this table. Note that if there are | |
15881 | type CUs, then conceptually CUs and type CUs form a single list for | |
15882 | the purposes of CU indices. | |
15883 | ||
987d643c TT |
15884 | 3. The types CU list. This is a sequence of triplets of 64-bit |
15885 | little-endian values. In a triplet, the first value is the CU | |
15886 | offset, the second value is the type offset in the CU, and the | |
15887 | third value is the type signature. The types CU list is not | |
15888 | sorted. | |
9291a0cd | 15889 | |
987d643c | 15890 | 4. The address section. The address section consists of a sequence |
9291a0cd TT |
15891 | of address entries. Each address entry has three elements. |
15892 | [0] The low address. This is a 64-bit little-endian value. | |
15893 | [1] The high address. This is a 64-bit little-endian value. | |
148c11bf | 15894 | Like DW_AT_high_pc, the value is one byte beyond the end. |
9291a0cd TT |
15895 | [2] The CU index. This is an offset_type value. |
15896 | ||
987d643c | 15897 | 5. The symbol table. This is a hash table. The size of the hash |
9291a0cd TT |
15898 | table is always a power of 2. The initial hash and the step are |
15899 | currently defined by the `find_slot' function. | |
15900 | ||
15901 | Each slot in the hash table consists of a pair of offset_type | |
15902 | values. The first value is the offset of the symbol's name in the | |
15903 | constant pool. The second value is the offset of the CU vector in | |
15904 | the constant pool. | |
15905 | ||
15906 | If both values are 0, then this slot in the hash table is empty. | |
15907 | This is ok because while 0 is a valid constant pool index, it | |
15908 | cannot be a valid index for both a string and a CU vector. | |
15909 | ||
15910 | A string in the constant pool is stored as a \0-terminated string, | |
15911 | as you'd expect. | |
15912 | ||
15913 | A CU vector in the constant pool is a sequence of offset_type | |
15914 | values. The first value is the number of CU indices in the vector. | |
15915 | Each subsequent value is the index of a CU in the CU list. This | |
15916 | element in the hash table is used to indicate which CUs define the | |
15917 | symbol. | |
15918 | ||
987d643c | 15919 | 6. The constant pool. This is simply a bunch of bytes. It is |
9291a0cd TT |
15920 | organized so that alignment is correct: CU vectors are stored |
15921 | first, followed by strings. */ | |
11570e71 | 15922 | |
9291a0cd TT |
15923 | static void |
15924 | save_gdb_index_command (char *arg, int from_tty) | |
15925 | { | |
15926 | struct objfile *objfile; | |
15927 | ||
15928 | if (!arg || !*arg) | |
96d19272 | 15929 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
15930 | |
15931 | ALL_OBJFILES (objfile) | |
15932 | { | |
15933 | struct stat st; | |
15934 | ||
15935 | /* If the objfile does not correspond to an actual file, skip it. */ | |
15936 | if (stat (objfile->name, &st) < 0) | |
15937 | continue; | |
15938 | ||
15939 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
15940 | if (dwarf2_per_objfile) | |
15941 | { | |
15942 | volatile struct gdb_exception except; | |
15943 | ||
15944 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
15945 | { | |
15946 | write_psymtabs_to_index (objfile, arg); | |
15947 | } | |
15948 | if (except.reason < 0) | |
15949 | exception_fprintf (gdb_stderr, except, | |
15950 | _("Error while writing index for `%s': "), | |
15951 | objfile->name); | |
15952 | } | |
15953 | } | |
dce234bc PP |
15954 | } |
15955 | ||
9291a0cd TT |
15956 | \f |
15957 | ||
9eae7c52 TT |
15958 | int dwarf2_always_disassemble; |
15959 | ||
15960 | static void | |
15961 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
15962 | struct cmd_list_element *c, const char *value) | |
15963 | { | |
3e43a32a MS |
15964 | fprintf_filtered (file, |
15965 | _("Whether to always disassemble " | |
15966 | "DWARF expressions is %s.\n"), | |
9eae7c52 TT |
15967 | value); |
15968 | } | |
15969 | ||
6502dd73 DJ |
15970 | void _initialize_dwarf2_read (void); |
15971 | ||
15972 | void | |
15973 | _initialize_dwarf2_read (void) | |
15974 | { | |
96d19272 JK |
15975 | struct cmd_list_element *c; |
15976 | ||
dce234bc | 15977 | dwarf2_objfile_data_key |
c1bd65d0 | 15978 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 15979 | |
1bedd215 AC |
15980 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
15981 | Set DWARF 2 specific variables.\n\ | |
15982 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
15983 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
15984 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
15985 | ||
1bedd215 AC |
15986 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
15987 | Show DWARF 2 specific variables\n\ | |
15988 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
15989 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
15990 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
15991 | ||
15992 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
15993 | &dwarf2_max_cache_age, _("\ |
15994 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
15995 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
15996 | A higher limit means that cached compilation units will be stored\n\ | |
15997 | in memory longer, and more total memory will be used. Zero disables\n\ | |
15998 | caching, which can slow down startup."), | |
2c5b56ce | 15999 | NULL, |
920d2a44 | 16000 | show_dwarf2_max_cache_age, |
2c5b56ce | 16001 | &set_dwarf2_cmdlist, |
ae038cb0 | 16002 | &show_dwarf2_cmdlist); |
d97bc12b | 16003 | |
9eae7c52 TT |
16004 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
16005 | &dwarf2_always_disassemble, _("\ | |
16006 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
16007 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
16008 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
16009 | syntax. When disabled, expressions will be printed in a more\n\ | |
16010 | conversational style, when possible."), | |
16011 | NULL, | |
16012 | show_dwarf2_always_disassemble, | |
16013 | &set_dwarf2_cmdlist, | |
16014 | &show_dwarf2_cmdlist); | |
16015 | ||
d97bc12b DE |
16016 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
16017 | Set debugging of the dwarf2 DIE reader."), _("\ | |
16018 | Show debugging of the dwarf2 DIE reader."), _("\ | |
16019 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
16020 | The value is the maximum depth to print."), | |
16021 | NULL, | |
16022 | NULL, | |
16023 | &setdebuglist, &showdebuglist); | |
9291a0cd | 16024 | |
96d19272 | 16025 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
11570e71 | 16026 | _("\ |
fc1a9d6e | 16027 | Save a gdb-index file.\n\ |
11570e71 | 16028 | Usage: save gdb-index DIRECTORY"), |
96d19272 JK |
16029 | &save_cmdlist); |
16030 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 16031 | } |