Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
6aba47ca | 3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
4c38e0a4 | 4 | 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
0fb0cc75 | 5 | Free Software Foundation, Inc. |
c906108c SS |
6 | |
7 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
8 | Inc. with support from Florida State University (under contract | |
9 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
10 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
11 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 12 | support. |
c906108c | 13 | |
c5aa993b | 14 | This file is part of GDB. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is free software; you can redistribute it and/or modify |
17 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
18 | the Free Software Foundation; either version 3 of the License, or |
19 | (at your option) any later version. | |
c906108c | 20 | |
a9762ec7 JB |
21 | This program is distributed in the hope that it will be useful, |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
c906108c | 25 | |
c5aa993b | 26 | You should have received a copy of the GNU General Public License |
a9762ec7 | 27 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
28 | |
29 | #include "defs.h" | |
30 | #include "bfd.h" | |
c906108c SS |
31 | #include "symtab.h" |
32 | #include "gdbtypes.h" | |
c906108c | 33 | #include "objfiles.h" |
fa8f86ff | 34 | #include "dwarf2.h" |
c906108c SS |
35 | #include "buildsym.h" |
36 | #include "demangle.h" | |
37 | #include "expression.h" | |
d5166ae1 | 38 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 39 | #include "macrotab.h" |
c906108c SS |
40 | #include "language.h" |
41 | #include "complaints.h" | |
357e46e7 | 42 | #include "bcache.h" |
4c2df51b DJ |
43 | #include "dwarf2expr.h" |
44 | #include "dwarf2loc.h" | |
9219021c | 45 | #include "cp-support.h" |
72bf9492 | 46 | #include "hashtab.h" |
ae038cb0 DJ |
47 | #include "command.h" |
48 | #include "gdbcmd.h" | |
edb3359d | 49 | #include "block.h" |
ff013f42 | 50 | #include "addrmap.h" |
94af9270 KS |
51 | #include "typeprint.h" |
52 | #include "jv-lang.h" | |
ccefe4c4 | 53 | #include "psympriv.h" |
9291a0cd TT |
54 | #include "exceptions.h" |
55 | #include "gdb_stat.h" | |
96d19272 | 56 | #include "completer.h" |
34eaf542 | 57 | #include "vec.h" |
98bfdba5 PA |
58 | #include "c-lang.h" |
59 | #include "valprint.h" | |
4c2df51b | 60 | |
c906108c SS |
61 | #include <fcntl.h> |
62 | #include "gdb_string.h" | |
4bdf3d34 | 63 | #include "gdb_assert.h" |
c906108c | 64 | #include <sys/types.h> |
233a11ab CS |
65 | #ifdef HAVE_ZLIB_H |
66 | #include <zlib.h> | |
67 | #endif | |
dce234bc PP |
68 | #ifdef HAVE_MMAP |
69 | #include <sys/mman.h> | |
85d9bd0e TT |
70 | #ifndef MAP_FAILED |
71 | #define MAP_FAILED ((void *) -1) | |
72 | #endif | |
dce234bc | 73 | #endif |
d8151005 | 74 | |
34eaf542 TT |
75 | typedef struct symbol *symbolp; |
76 | DEF_VEC_P (symbolp); | |
77 | ||
107d2387 | 78 | #if 0 |
357e46e7 | 79 | /* .debug_info header for a compilation unit |
c906108c SS |
80 | Because of alignment constraints, this structure has padding and cannot |
81 | be mapped directly onto the beginning of the .debug_info section. */ | |
82 | typedef struct comp_unit_header | |
83 | { | |
84 | unsigned int length; /* length of the .debug_info | |
85 | contribution */ | |
86 | unsigned short version; /* version number -- 2 for DWARF | |
87 | version 2 */ | |
88 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
89 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
90 | } | |
91 | _COMP_UNIT_HEADER; | |
92 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 93 | #endif |
c906108c | 94 | |
c906108c SS |
95 | /* .debug_line statement program prologue |
96 | Because of alignment constraints, this structure has padding and cannot | |
97 | be mapped directly onto the beginning of the .debug_info section. */ | |
98 | typedef struct statement_prologue | |
99 | { | |
100 | unsigned int total_length; /* byte length of the statement | |
101 | information */ | |
102 | unsigned short version; /* version number -- 2 for DWARF | |
103 | version 2 */ | |
104 | unsigned int prologue_length; /* # bytes between prologue & | |
105 | stmt program */ | |
106 | unsigned char minimum_instruction_length; /* byte size of | |
107 | smallest instr */ | |
108 | unsigned char default_is_stmt; /* initial value of is_stmt | |
109 | register */ | |
110 | char line_base; | |
111 | unsigned char line_range; | |
112 | unsigned char opcode_base; /* number assigned to first special | |
113 | opcode */ | |
114 | unsigned char *standard_opcode_lengths; | |
115 | } | |
116 | _STATEMENT_PROLOGUE; | |
117 | ||
d97bc12b DE |
118 | /* When non-zero, dump DIEs after they are read in. */ |
119 | static int dwarf2_die_debug = 0; | |
120 | ||
dce234bc PP |
121 | static int pagesize; |
122 | ||
df8a16a1 DJ |
123 | /* When set, the file that we're processing is known to have debugging |
124 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
125 | but later versions do. */ | |
126 | ||
127 | static int processing_has_namespace_info; | |
128 | ||
6502dd73 DJ |
129 | static const struct objfile_data *dwarf2_objfile_data_key; |
130 | ||
dce234bc PP |
131 | struct dwarf2_section_info |
132 | { | |
133 | asection *asection; | |
134 | gdb_byte *buffer; | |
135 | bfd_size_type size; | |
136 | int was_mmapped; | |
be391dca TT |
137 | /* True if we have tried to read this section. */ |
138 | int readin; | |
dce234bc PP |
139 | }; |
140 | ||
9291a0cd TT |
141 | /* All offsets in the index are of this type. It must be |
142 | architecture-independent. */ | |
143 | typedef uint32_t offset_type; | |
144 | ||
145 | DEF_VEC_I (offset_type); | |
146 | ||
147 | /* A description of the mapped index. The file format is described in | |
148 | a comment by the code that writes the index. */ | |
149 | struct mapped_index | |
150 | { | |
151 | /* The total length of the buffer. */ | |
152 | off_t total_size; | |
153 | /* A pointer to the address table data. */ | |
154 | const gdb_byte *address_table; | |
155 | /* Size of the address table data in bytes. */ | |
156 | offset_type address_table_size; | |
157 | /* The hash table. */ | |
158 | const offset_type *index_table; | |
159 | /* Size in slots, each slot is 2 offset_types. */ | |
160 | offset_type index_table_slots; | |
161 | /* A pointer to the constant pool. */ | |
162 | const char *constant_pool; | |
163 | }; | |
164 | ||
6502dd73 DJ |
165 | struct dwarf2_per_objfile |
166 | { | |
dce234bc PP |
167 | struct dwarf2_section_info info; |
168 | struct dwarf2_section_info abbrev; | |
169 | struct dwarf2_section_info line; | |
dce234bc PP |
170 | struct dwarf2_section_info loc; |
171 | struct dwarf2_section_info macinfo; | |
172 | struct dwarf2_section_info str; | |
173 | struct dwarf2_section_info ranges; | |
348e048f | 174 | struct dwarf2_section_info types; |
dce234bc PP |
175 | struct dwarf2_section_info frame; |
176 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 177 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 178 | |
be391dca TT |
179 | /* Back link. */ |
180 | struct objfile *objfile; | |
181 | ||
10b3939b DJ |
182 | /* A list of all the compilation units. This is used to locate |
183 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
184 | struct dwarf2_per_cu_data **all_comp_units; |
185 | ||
186 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
187 | int n_comp_units; | |
188 | ||
1fd400ff TT |
189 | /* The number of .debug_types-related CUs. */ |
190 | int n_type_comp_units; | |
191 | ||
192 | /* The .debug_types-related CUs. */ | |
193 | struct dwarf2_per_cu_data **type_comp_units; | |
194 | ||
ae038cb0 DJ |
195 | /* A chain of compilation units that are currently read in, so that |
196 | they can be freed later. */ | |
197 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 198 | |
348e048f DE |
199 | /* A table mapping .debug_types signatures to its signatured_type entry. |
200 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
201 | htab_t signatured_types; | |
202 | ||
72dca2f5 FR |
203 | /* A flag indicating wether this objfile has a section loaded at a |
204 | VMA of 0. */ | |
205 | int has_section_at_zero; | |
9291a0cd TT |
206 | |
207 | /* True if we are using the mapped index. */ | |
208 | unsigned char using_index; | |
209 | ||
210 | /* The mapped index. */ | |
211 | struct mapped_index *index_table; | |
98bfdba5 PA |
212 | |
213 | /* Set during partial symbol reading, to prevent queueing of full | |
214 | symbols. */ | |
215 | int reading_partial_symbols; | |
6502dd73 DJ |
216 | }; |
217 | ||
218 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c SS |
219 | |
220 | /* names of the debugging sections */ | |
221 | ||
233a11ab CS |
222 | /* Note that if the debugging section has been compressed, it might |
223 | have a name like .zdebug_info. */ | |
224 | ||
225 | #define INFO_SECTION "debug_info" | |
226 | #define ABBREV_SECTION "debug_abbrev" | |
227 | #define LINE_SECTION "debug_line" | |
233a11ab CS |
228 | #define LOC_SECTION "debug_loc" |
229 | #define MACINFO_SECTION "debug_macinfo" | |
230 | #define STR_SECTION "debug_str" | |
231 | #define RANGES_SECTION "debug_ranges" | |
348e048f | 232 | #define TYPES_SECTION "debug_types" |
233a11ab CS |
233 | #define FRAME_SECTION "debug_frame" |
234 | #define EH_FRAME_SECTION "eh_frame" | |
9291a0cd | 235 | #define GDB_INDEX_SECTION "gdb_index" |
c906108c SS |
236 | |
237 | /* local data types */ | |
238 | ||
57349743 JB |
239 | /* We hold several abbreviation tables in memory at the same time. */ |
240 | #ifndef ABBREV_HASH_SIZE | |
241 | #define ABBREV_HASH_SIZE 121 | |
242 | #endif | |
243 | ||
107d2387 AC |
244 | /* The data in a compilation unit header, after target2host |
245 | translation, looks like this. */ | |
c906108c | 246 | struct comp_unit_head |
a738430d | 247 | { |
c764a876 | 248 | unsigned int length; |
a738430d | 249 | short version; |
a738430d MK |
250 | unsigned char addr_size; |
251 | unsigned char signed_addr_p; | |
9cbfa09e | 252 | unsigned int abbrev_offset; |
57349743 | 253 | |
a738430d MK |
254 | /* Size of file offsets; either 4 or 8. */ |
255 | unsigned int offset_size; | |
57349743 | 256 | |
a738430d MK |
257 | /* Size of the length field; either 4 or 12. */ |
258 | unsigned int initial_length_size; | |
57349743 | 259 | |
a738430d MK |
260 | /* Offset to the first byte of this compilation unit header in the |
261 | .debug_info section, for resolving relative reference dies. */ | |
262 | unsigned int offset; | |
57349743 | 263 | |
d00adf39 DE |
264 | /* Offset to first die in this cu from the start of the cu. |
265 | This will be the first byte following the compilation unit header. */ | |
266 | unsigned int first_die_offset; | |
a738430d | 267 | }; |
c906108c | 268 | |
e7c27a73 DJ |
269 | /* Internal state when decoding a particular compilation unit. */ |
270 | struct dwarf2_cu | |
271 | { | |
272 | /* The objfile containing this compilation unit. */ | |
273 | struct objfile *objfile; | |
274 | ||
d00adf39 | 275 | /* The header of the compilation unit. */ |
e7c27a73 | 276 | struct comp_unit_head header; |
e142c38c | 277 | |
d00adf39 DE |
278 | /* Base address of this compilation unit. */ |
279 | CORE_ADDR base_address; | |
280 | ||
281 | /* Non-zero if base_address has been set. */ | |
282 | int base_known; | |
283 | ||
e142c38c DJ |
284 | struct function_range *first_fn, *last_fn, *cached_fn; |
285 | ||
286 | /* The language we are debugging. */ | |
287 | enum language language; | |
288 | const struct language_defn *language_defn; | |
289 | ||
b0f35d58 DL |
290 | const char *producer; |
291 | ||
e142c38c DJ |
292 | /* The generic symbol table building routines have separate lists for |
293 | file scope symbols and all all other scopes (local scopes). So | |
294 | we need to select the right one to pass to add_symbol_to_list(). | |
295 | We do it by keeping a pointer to the correct list in list_in_scope. | |
296 | ||
297 | FIXME: The original dwarf code just treated the file scope as the | |
298 | first local scope, and all other local scopes as nested local | |
299 | scopes, and worked fine. Check to see if we really need to | |
300 | distinguish these in buildsym.c. */ | |
301 | struct pending **list_in_scope; | |
302 | ||
f3dd6933 DJ |
303 | /* DWARF abbreviation table associated with this compilation unit. */ |
304 | struct abbrev_info **dwarf2_abbrevs; | |
305 | ||
306 | /* Storage for the abbrev table. */ | |
307 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
308 | |
309 | /* Hash table holding all the loaded partial DIEs. */ | |
310 | htab_t partial_dies; | |
311 | ||
312 | /* Storage for things with the same lifetime as this read-in compilation | |
313 | unit, including partial DIEs. */ | |
314 | struct obstack comp_unit_obstack; | |
315 | ||
ae038cb0 DJ |
316 | /* When multiple dwarf2_cu structures are living in memory, this field |
317 | chains them all together, so that they can be released efficiently. | |
318 | We will probably also want a generation counter so that most-recently-used | |
319 | compilation units are cached... */ | |
320 | struct dwarf2_per_cu_data *read_in_chain; | |
321 | ||
322 | /* Backchain to our per_cu entry if the tree has been built. */ | |
323 | struct dwarf2_per_cu_data *per_cu; | |
324 | ||
f792889a DJ |
325 | /* Pointer to the die -> type map. Although it is stored |
326 | permanently in per_cu, we copy it here to avoid double | |
327 | indirection. */ | |
328 | htab_t type_hash; | |
329 | ||
ae038cb0 DJ |
330 | /* How many compilation units ago was this CU last referenced? */ |
331 | int last_used; | |
332 | ||
10b3939b | 333 | /* A hash table of die offsets for following references. */ |
51545339 | 334 | htab_t die_hash; |
10b3939b DJ |
335 | |
336 | /* Full DIEs if read in. */ | |
337 | struct die_info *dies; | |
338 | ||
339 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
340 | units referenced by this one. Only set during full symbol processing; | |
341 | partial symbol tables do not have dependencies. */ | |
342 | htab_t dependencies; | |
343 | ||
cb1df416 DJ |
344 | /* Header data from the line table, during full symbol processing. */ |
345 | struct line_header *line_header; | |
346 | ||
ae038cb0 DJ |
347 | /* Mark used when releasing cached dies. */ |
348 | unsigned int mark : 1; | |
349 | ||
350 | /* This flag will be set if this compilation unit might include | |
351 | inter-compilation-unit references. */ | |
352 | unsigned int has_form_ref_addr : 1; | |
353 | ||
72bf9492 DJ |
354 | /* This flag will be set if this compilation unit includes any |
355 | DW_TAG_namespace DIEs. If we know that there are explicit | |
356 | DIEs for namespaces, we don't need to try to infer them | |
357 | from mangled names. */ | |
358 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
359 | }; |
360 | ||
9291a0cd TT |
361 | /* When using the index (and thus not using psymtabs), each CU has an |
362 | object of this type. This is used to hold information needed by | |
363 | the various "quick" methods. */ | |
364 | struct dwarf2_per_cu_quick_data | |
365 | { | |
366 | /* The line table. This can be NULL if there was no line table. */ | |
367 | struct line_header *lines; | |
368 | ||
369 | /* The file names from the line table. */ | |
370 | const char **file_names; | |
371 | /* The file names from the line table after being run through | |
372 | gdb_realpath. */ | |
373 | const char **full_names; | |
374 | ||
375 | /* The corresponding symbol table. This is NULL if symbols for this | |
376 | CU have not yet been read. */ | |
377 | struct symtab *symtab; | |
378 | ||
379 | /* A temporary mark bit used when iterating over all CUs in | |
380 | expand_symtabs_matching. */ | |
381 | unsigned int mark : 1; | |
382 | ||
383 | /* True if we've tried to read the line table. */ | |
384 | unsigned int read_lines : 1; | |
385 | }; | |
386 | ||
10b3939b DJ |
387 | /* Persistent data held for a compilation unit, even when not |
388 | processing it. We put a pointer to this structure in the | |
389 | read_symtab_private field of the psymtab. If we encounter | |
390 | inter-compilation-unit references, we also maintain a sorted | |
391 | list of all compilation units. */ | |
392 | ||
ae038cb0 DJ |
393 | struct dwarf2_per_cu_data |
394 | { | |
348e048f | 395 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 396 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
397 | - if it doesn't, GDB will fall over anyway. |
398 | NOTE: Unlike comp_unit_head.length, this length includes | |
399 | initial_length_size. */ | |
c764a876 | 400 | unsigned int offset; |
348e048f | 401 | unsigned int length : 29; |
ae038cb0 DJ |
402 | |
403 | /* Flag indicating this compilation unit will be read in before | |
404 | any of the current compilation units are processed. */ | |
c764a876 | 405 | unsigned int queued : 1; |
ae038cb0 | 406 | |
5afb4e99 DJ |
407 | /* This flag will be set if we need to load absolutely all DIEs |
408 | for this compilation unit, instead of just the ones we think | |
409 | are interesting. It gets set if we look for a DIE in the | |
410 | hash table and don't find it. */ | |
411 | unsigned int load_all_dies : 1; | |
412 | ||
348e048f DE |
413 | /* Non-zero if this CU is from .debug_types. |
414 | Otherwise it's from .debug_info. */ | |
415 | unsigned int from_debug_types : 1; | |
416 | ||
17ea53c3 JK |
417 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
418 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 419 | struct dwarf2_cu *cu; |
1c379e20 DJ |
420 | |
421 | /* If full symbols for this CU have been read in, then this field | |
422 | holds a map of DIE offsets to types. It isn't always possible | |
423 | to reconstruct this information later, so we have to preserve | |
424 | it. */ | |
1c379e20 | 425 | htab_t type_hash; |
10b3939b | 426 | |
9291a0cd TT |
427 | /* The corresponding objfile. */ |
428 | struct objfile *objfile; | |
429 | ||
430 | /* When using partial symbol tables, the 'psymtab' field is active. | |
431 | Otherwise the 'quick' field is active. */ | |
432 | union | |
433 | { | |
434 | /* The partial symbol table associated with this compilation unit, | |
435 | or NULL for partial units (which do not have an associated | |
436 | symtab). */ | |
437 | struct partial_symtab *psymtab; | |
438 | ||
439 | /* Data needed by the "quick" functions. */ | |
440 | struct dwarf2_per_cu_quick_data *quick; | |
441 | } v; | |
ae038cb0 DJ |
442 | }; |
443 | ||
348e048f DE |
444 | /* Entry in the signatured_types hash table. */ |
445 | ||
446 | struct signatured_type | |
447 | { | |
448 | ULONGEST signature; | |
449 | ||
450 | /* Offset in .debug_types of the TU (type_unit) for this type. */ | |
451 | unsigned int offset; | |
452 | ||
453 | /* Offset in .debug_types of the type defined by this TU. */ | |
454 | unsigned int type_offset; | |
455 | ||
456 | /* The CU(/TU) of this type. */ | |
457 | struct dwarf2_per_cu_data per_cu; | |
458 | }; | |
459 | ||
93311388 DE |
460 | /* Struct used to pass misc. parameters to read_die_and_children, et. al. |
461 | which are used for both .debug_info and .debug_types dies. | |
462 | All parameters here are unchanging for the life of the call. | |
463 | This struct exists to abstract away the constant parameters of | |
464 | die reading. */ | |
465 | ||
466 | struct die_reader_specs | |
467 | { | |
468 | /* The bfd of this objfile. */ | |
469 | bfd* abfd; | |
470 | ||
471 | /* The CU of the DIE we are parsing. */ | |
472 | struct dwarf2_cu *cu; | |
473 | ||
474 | /* Pointer to start of section buffer. | |
475 | This is either the start of .debug_info or .debug_types. */ | |
476 | const gdb_byte *buffer; | |
477 | }; | |
478 | ||
debd256d JB |
479 | /* The line number information for a compilation unit (found in the |
480 | .debug_line section) begins with a "statement program header", | |
481 | which contains the following information. */ | |
482 | struct line_header | |
483 | { | |
484 | unsigned int total_length; | |
485 | unsigned short version; | |
486 | unsigned int header_length; | |
487 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 488 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
489 | unsigned char default_is_stmt; |
490 | int line_base; | |
491 | unsigned char line_range; | |
492 | unsigned char opcode_base; | |
493 | ||
494 | /* standard_opcode_lengths[i] is the number of operands for the | |
495 | standard opcode whose value is i. This means that | |
496 | standard_opcode_lengths[0] is unused, and the last meaningful | |
497 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
498 | unsigned char *standard_opcode_lengths; | |
499 | ||
500 | /* The include_directories table. NOTE! These strings are not | |
501 | allocated with xmalloc; instead, they are pointers into | |
502 | debug_line_buffer. If you try to free them, `free' will get | |
503 | indigestion. */ | |
504 | unsigned int num_include_dirs, include_dirs_size; | |
505 | char **include_dirs; | |
506 | ||
507 | /* The file_names table. NOTE! These strings are not allocated | |
508 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
509 | Don't try to free them directly. */ | |
510 | unsigned int num_file_names, file_names_size; | |
511 | struct file_entry | |
c906108c | 512 | { |
debd256d JB |
513 | char *name; |
514 | unsigned int dir_index; | |
515 | unsigned int mod_time; | |
516 | unsigned int length; | |
aaa75496 | 517 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 518 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
519 | } *file_names; |
520 | ||
521 | /* The start and end of the statement program following this | |
6502dd73 | 522 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 523 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 524 | }; |
c906108c SS |
525 | |
526 | /* When we construct a partial symbol table entry we only | |
527 | need this much information. */ | |
528 | struct partial_die_info | |
529 | { | |
72bf9492 | 530 | /* Offset of this DIE. */ |
c906108c | 531 | unsigned int offset; |
72bf9492 DJ |
532 | |
533 | /* DWARF-2 tag for this DIE. */ | |
534 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
535 | ||
72bf9492 DJ |
536 | /* Assorted flags describing the data found in this DIE. */ |
537 | unsigned int has_children : 1; | |
538 | unsigned int is_external : 1; | |
539 | unsigned int is_declaration : 1; | |
540 | unsigned int has_type : 1; | |
541 | unsigned int has_specification : 1; | |
542 | unsigned int has_pc_info : 1; | |
543 | ||
544 | /* Flag set if the SCOPE field of this structure has been | |
545 | computed. */ | |
546 | unsigned int scope_set : 1; | |
547 | ||
fa4028e9 JB |
548 | /* Flag set if the DIE has a byte_size attribute. */ |
549 | unsigned int has_byte_size : 1; | |
550 | ||
98bfdba5 PA |
551 | /* Flag set if any of the DIE's children are template arguments. */ |
552 | unsigned int has_template_arguments : 1; | |
553 | ||
72bf9492 | 554 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 555 | sometimes a default name for unnamed DIEs. */ |
c906108c | 556 | char *name; |
72bf9492 DJ |
557 | |
558 | /* The scope to prepend to our children. This is generally | |
559 | allocated on the comp_unit_obstack, so will disappear | |
560 | when this compilation unit leaves the cache. */ | |
561 | char *scope; | |
562 | ||
563 | /* The location description associated with this DIE, if any. */ | |
564 | struct dwarf_block *locdesc; | |
565 | ||
566 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
567 | CORE_ADDR lowpc; |
568 | CORE_ADDR highpc; | |
72bf9492 | 569 | |
93311388 | 570 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 571 | DW_AT_sibling, if any. */ |
fe1b8b76 | 572 | gdb_byte *sibling; |
72bf9492 DJ |
573 | |
574 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
575 | DW_AT_specification (or DW_AT_abstract_origin or | |
576 | DW_AT_extension). */ | |
577 | unsigned int spec_offset; | |
578 | ||
579 | /* Pointers to this DIE's parent, first child, and next sibling, | |
580 | if any. */ | |
581 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
582 | }; |
583 | ||
584 | /* This data structure holds the information of an abbrev. */ | |
585 | struct abbrev_info | |
586 | { | |
587 | unsigned int number; /* number identifying abbrev */ | |
588 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
589 | unsigned short has_children; /* boolean */ |
590 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
591 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
592 | struct abbrev_info *next; /* next in chain */ | |
593 | }; | |
594 | ||
595 | struct attr_abbrev | |
596 | { | |
9d25dd43 DE |
597 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
598 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
599 | }; |
600 | ||
b60c80d6 DJ |
601 | /* Attributes have a name and a value */ |
602 | struct attribute | |
603 | { | |
9d25dd43 | 604 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
605 | ENUM_BITFIELD(dwarf_form) form : 15; |
606 | ||
607 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
608 | field should be in u.str (existing only for DW_STRING) but it is kept | |
609 | here for better struct attribute alignment. */ | |
610 | unsigned int string_is_canonical : 1; | |
611 | ||
b60c80d6 DJ |
612 | union |
613 | { | |
614 | char *str; | |
615 | struct dwarf_block *blk; | |
43bbcdc2 PH |
616 | ULONGEST unsnd; |
617 | LONGEST snd; | |
b60c80d6 | 618 | CORE_ADDR addr; |
348e048f | 619 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
620 | } |
621 | u; | |
622 | }; | |
623 | ||
c906108c SS |
624 | /* This data structure holds a complete die structure. */ |
625 | struct die_info | |
626 | { | |
76815b17 DE |
627 | /* DWARF-2 tag for this DIE. */ |
628 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
629 | ||
630 | /* Number of attributes */ | |
98bfdba5 PA |
631 | unsigned char num_attrs; |
632 | ||
633 | /* True if we're presently building the full type name for the | |
634 | type derived from this DIE. */ | |
635 | unsigned char building_fullname : 1; | |
76815b17 DE |
636 | |
637 | /* Abbrev number */ | |
638 | unsigned int abbrev; | |
639 | ||
93311388 | 640 | /* Offset in .debug_info or .debug_types section. */ |
76815b17 | 641 | unsigned int offset; |
78ba4af6 JB |
642 | |
643 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
644 | points to this die's parent; CHILD points to the first child of | |
645 | this node; and all the children of a given node are chained | |
646 | together via their SIBLING fields, terminated by a die whose | |
647 | tag is zero. */ | |
639d11d3 DC |
648 | struct die_info *child; /* Its first child, if any. */ |
649 | struct die_info *sibling; /* Its next sibling, if any. */ | |
650 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 651 | |
b60c80d6 DJ |
652 | /* An array of attributes, with NUM_ATTRS elements. There may be |
653 | zero, but it's not common and zero-sized arrays are not | |
654 | sufficiently portable C. */ | |
655 | struct attribute attrs[1]; | |
c906108c SS |
656 | }; |
657 | ||
5fb290d7 DJ |
658 | struct function_range |
659 | { | |
660 | const char *name; | |
661 | CORE_ADDR lowpc, highpc; | |
662 | int seen_line; | |
663 | struct function_range *next; | |
664 | }; | |
665 | ||
c906108c SS |
666 | /* Get at parts of an attribute structure */ |
667 | ||
668 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 669 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
670 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
671 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
672 | #define DW_SND(attr) ((attr)->u.snd) | |
673 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 674 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c SS |
675 | |
676 | /* Blocks are a bunch of untyped bytes. */ | |
677 | struct dwarf_block | |
678 | { | |
679 | unsigned int size; | |
fe1b8b76 | 680 | gdb_byte *data; |
c906108c SS |
681 | }; |
682 | ||
c906108c SS |
683 | #ifndef ATTR_ALLOC_CHUNK |
684 | #define ATTR_ALLOC_CHUNK 4 | |
685 | #endif | |
686 | ||
c906108c SS |
687 | /* Allocate fields for structs, unions and enums in this size. */ |
688 | #ifndef DW_FIELD_ALLOC_CHUNK | |
689 | #define DW_FIELD_ALLOC_CHUNK 4 | |
690 | #endif | |
691 | ||
c906108c SS |
692 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
693 | but this would require a corresponding change in unpack_field_as_long | |
694 | and friends. */ | |
695 | static int bits_per_byte = 8; | |
696 | ||
697 | /* The routines that read and process dies for a C struct or C++ class | |
698 | pass lists of data member fields and lists of member function fields | |
699 | in an instance of a field_info structure, as defined below. */ | |
700 | struct field_info | |
c5aa993b JM |
701 | { |
702 | /* List of data member and baseclasses fields. */ | |
703 | struct nextfield | |
704 | { | |
705 | struct nextfield *next; | |
706 | int accessibility; | |
707 | int virtuality; | |
708 | struct field field; | |
709 | } | |
7d0ccb61 | 710 | *fields, *baseclasses; |
c906108c | 711 | |
7d0ccb61 | 712 | /* Number of fields (including baseclasses). */ |
c5aa993b | 713 | int nfields; |
c906108c | 714 | |
c5aa993b JM |
715 | /* Number of baseclasses. */ |
716 | int nbaseclasses; | |
c906108c | 717 | |
c5aa993b JM |
718 | /* Set if the accesibility of one of the fields is not public. */ |
719 | int non_public_fields; | |
c906108c | 720 | |
c5aa993b JM |
721 | /* Member function fields array, entries are allocated in the order they |
722 | are encountered in the object file. */ | |
723 | struct nextfnfield | |
724 | { | |
725 | struct nextfnfield *next; | |
726 | struct fn_field fnfield; | |
727 | } | |
728 | *fnfields; | |
c906108c | 729 | |
c5aa993b JM |
730 | /* Member function fieldlist array, contains name of possibly overloaded |
731 | member function, number of overloaded member functions and a pointer | |
732 | to the head of the member function field chain. */ | |
733 | struct fnfieldlist | |
734 | { | |
735 | char *name; | |
736 | int length; | |
737 | struct nextfnfield *head; | |
738 | } | |
739 | *fnfieldlists; | |
c906108c | 740 | |
c5aa993b JM |
741 | /* Number of entries in the fnfieldlists array. */ |
742 | int nfnfields; | |
98751a41 JK |
743 | |
744 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
745 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
746 | struct typedef_field_list | |
747 | { | |
748 | struct typedef_field field; | |
749 | struct typedef_field_list *next; | |
750 | } | |
751 | *typedef_field_list; | |
752 | unsigned typedef_field_list_count; | |
c5aa993b | 753 | }; |
c906108c | 754 | |
10b3939b DJ |
755 | /* One item on the queue of compilation units to read in full symbols |
756 | for. */ | |
757 | struct dwarf2_queue_item | |
758 | { | |
759 | struct dwarf2_per_cu_data *per_cu; | |
760 | struct dwarf2_queue_item *next; | |
761 | }; | |
762 | ||
763 | /* The current queue. */ | |
764 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
765 | ||
ae038cb0 DJ |
766 | /* Loaded secondary compilation units are kept in memory until they |
767 | have not been referenced for the processing of this many | |
768 | compilation units. Set this to zero to disable caching. Cache | |
769 | sizes of up to at least twenty will improve startup time for | |
770 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
771 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
772 | static void |
773 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
774 | struct cmd_list_element *c, const char *value) | |
775 | { | |
776 | fprintf_filtered (file, _("\ | |
777 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
778 | value); | |
779 | } | |
780 | ||
ae038cb0 | 781 | |
c906108c SS |
782 | /* Various complaints about symbol reading that don't abort the process */ |
783 | ||
4d3c2250 KB |
784 | static void |
785 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 786 | { |
4d3c2250 | 787 | complaint (&symfile_complaints, |
e2e0b3e5 | 788 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
789 | } |
790 | ||
25e43795 DJ |
791 | static void |
792 | dwarf2_debug_line_missing_file_complaint (void) | |
793 | { | |
794 | complaint (&symfile_complaints, | |
795 | _(".debug_line section has line data without a file")); | |
796 | } | |
797 | ||
59205f5a JB |
798 | static void |
799 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
800 | { | |
801 | complaint (&symfile_complaints, | |
802 | _(".debug_line section has line program sequence without an end")); | |
803 | } | |
804 | ||
4d3c2250 KB |
805 | static void |
806 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 807 | { |
e2e0b3e5 | 808 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
809 | } |
810 | ||
4d3c2250 KB |
811 | static void |
812 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
813 | int arg3) | |
2e276125 | 814 | { |
4d3c2250 | 815 | complaint (&symfile_complaints, |
e2e0b3e5 | 816 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
817 | arg2, arg3); |
818 | } | |
819 | ||
820 | static void | |
821 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 822 | { |
4d3c2250 | 823 | complaint (&symfile_complaints, |
e2e0b3e5 | 824 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
825 | } |
826 | ||
827 | static void | |
828 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 829 | { |
4d3c2250 | 830 | complaint (&symfile_complaints, |
e2e0b3e5 | 831 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
832 | arg1); |
833 | } | |
834 | ||
835 | static void | |
836 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 837 | { |
4d3c2250 | 838 | complaint (&symfile_complaints, |
e2e0b3e5 | 839 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 840 | } |
c906108c | 841 | |
c906108c SS |
842 | /* local function prototypes */ |
843 | ||
4efb68b1 | 844 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 845 | |
aaa75496 JB |
846 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
847 | struct objfile *); | |
848 | ||
849 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
d85a05f0 | 850 | struct die_info *, |
aaa75496 JB |
851 | struct partial_symtab *); |
852 | ||
c67a9c90 | 853 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 854 | |
72bf9492 DJ |
855 | static void scan_partial_symbols (struct partial_die_info *, |
856 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 857 | int, struct dwarf2_cu *); |
c906108c | 858 | |
72bf9492 DJ |
859 | static void add_partial_symbol (struct partial_die_info *, |
860 | struct dwarf2_cu *); | |
63d06c5c | 861 | |
72bf9492 DJ |
862 | static void add_partial_namespace (struct partial_die_info *pdi, |
863 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 864 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 865 | |
5d7cb8df JK |
866 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
867 | CORE_ADDR *highpc, int need_pc, | |
868 | struct dwarf2_cu *cu); | |
869 | ||
72bf9492 DJ |
870 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
871 | struct dwarf2_cu *cu); | |
91c24f0a | 872 | |
bc30ff58 JB |
873 | static void add_partial_subprogram (struct partial_die_info *pdi, |
874 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 875 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 876 | |
fe1b8b76 | 877 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
93311388 DE |
878 | gdb_byte *buffer, gdb_byte *info_ptr, |
879 | bfd *abfd, struct dwarf2_cu *cu); | |
91c24f0a | 880 | |
a14ed312 | 881 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 882 | |
a14ed312 | 883 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 884 | |
e7c27a73 | 885 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 886 | |
f3dd6933 | 887 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 888 | |
fe1b8b76 | 889 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 890 | struct dwarf2_cu *); |
72bf9492 | 891 | |
57349743 | 892 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 893 | struct dwarf2_cu *); |
c906108c | 894 | |
93311388 DE |
895 | static struct partial_die_info *load_partial_dies (bfd *, |
896 | gdb_byte *, gdb_byte *, | |
897 | int, struct dwarf2_cu *); | |
72bf9492 | 898 | |
fe1b8b76 | 899 | static gdb_byte *read_partial_die (struct partial_die_info *, |
93311388 DE |
900 | struct abbrev_info *abbrev, |
901 | unsigned int, bfd *, | |
902 | gdb_byte *, gdb_byte *, | |
903 | struct dwarf2_cu *); | |
c906108c | 904 | |
c764a876 | 905 | static struct partial_die_info *find_partial_die (unsigned int, |
10b3939b | 906 | struct dwarf2_cu *); |
72bf9492 DJ |
907 | |
908 | static void fixup_partial_die (struct partial_die_info *, | |
909 | struct dwarf2_cu *); | |
910 | ||
fe1b8b76 JB |
911 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
912 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 913 | |
fe1b8b76 JB |
914 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
915 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 916 | |
fe1b8b76 | 917 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 918 | |
fe1b8b76 | 919 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 920 | |
fe1b8b76 | 921 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 922 | |
fe1b8b76 | 923 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 924 | |
93311388 | 925 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 926 | |
fe1b8b76 | 927 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 928 | unsigned int *); |
c906108c | 929 | |
c764a876 DE |
930 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
931 | ||
932 | static LONGEST read_checked_initial_length_and_offset | |
933 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
934 | unsigned int *, unsigned int *); | |
613e1657 | 935 | |
fe1b8b76 | 936 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
937 | unsigned int *); |
938 | ||
939 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 940 | |
fe1b8b76 | 941 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 942 | |
9b1c24c8 | 943 | static char *read_direct_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 944 | |
fe1b8b76 JB |
945 | static char *read_indirect_string (bfd *, gdb_byte *, |
946 | const struct comp_unit_head *, | |
947 | unsigned int *); | |
4bdf3d34 | 948 | |
fe1b8b76 | 949 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 950 | |
fe1b8b76 | 951 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 952 | |
fe1b8b76 | 953 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 954 | |
e142c38c | 955 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 956 | |
e142c38c DJ |
957 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
958 | struct dwarf2_cu *); | |
c906108c | 959 | |
348e048f DE |
960 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
961 | unsigned int, | |
962 | struct dwarf2_cu *); | |
963 | ||
05cf31d1 JB |
964 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
965 | struct dwarf2_cu *cu); | |
966 | ||
e142c38c | 967 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 968 | |
e142c38c | 969 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 970 | struct dwarf2_cu **); |
63d06c5c | 971 | |
debd256d JB |
972 | static void free_line_header (struct line_header *lh); |
973 | ||
aaa75496 JB |
974 | static void add_file_name (struct line_header *, char *, unsigned int, |
975 | unsigned int, unsigned int); | |
976 | ||
debd256d JB |
977 | static struct line_header *(dwarf_decode_line_header |
978 | (unsigned int offset, | |
e7c27a73 | 979 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
980 | |
981 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 982 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 983 | |
4f1520fb | 984 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 985 | |
a14ed312 | 986 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 987 | struct dwarf2_cu *); |
c906108c | 988 | |
34eaf542 TT |
989 | static struct symbol *new_symbol_full (struct die_info *, struct type *, |
990 | struct dwarf2_cu *, struct symbol *); | |
991 | ||
a14ed312 | 992 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 993 | struct dwarf2_cu *); |
c906108c | 994 | |
98bfdba5 PA |
995 | static void dwarf2_const_value_attr (struct attribute *attr, |
996 | struct type *type, | |
997 | const char *name, | |
998 | struct obstack *obstack, | |
999 | struct dwarf2_cu *cu, long *value, | |
1000 | gdb_byte **bytes, | |
1001 | struct dwarf2_locexpr_baton **baton); | |
2df3850c | 1002 | |
e7c27a73 | 1003 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1004 | |
b4ba55a1 JB |
1005 | static int need_gnat_info (struct dwarf2_cu *); |
1006 | ||
1007 | static struct type *die_descriptive_type (struct die_info *, struct dwarf2_cu *); | |
1008 | ||
1009 | static void set_descriptive_type (struct type *, struct die_info *, | |
1010 | struct dwarf2_cu *); | |
1011 | ||
e7c27a73 DJ |
1012 | static struct type *die_containing_type (struct die_info *, |
1013 | struct dwarf2_cu *); | |
c906108c | 1014 | |
e7c27a73 | 1015 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1016 | |
f792889a | 1017 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1018 | |
086ed43d | 1019 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1020 | |
6e70227d | 1021 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1022 | const char *suffix, int physname, |
1023 | struct dwarf2_cu *cu); | |
63d06c5c | 1024 | |
e7c27a73 | 1025 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1026 | |
348e048f DE |
1027 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1028 | ||
e7c27a73 | 1029 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1030 | |
e7c27a73 | 1031 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1032 | |
ff013f42 JK |
1033 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1034 | struct dwarf2_cu *, struct partial_symtab *); | |
1035 | ||
a14ed312 | 1036 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1037 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1038 | struct partial_symtab *); | |
c906108c | 1039 | |
fae299cd DC |
1040 | static void get_scope_pc_bounds (struct die_info *, |
1041 | CORE_ADDR *, CORE_ADDR *, | |
1042 | struct dwarf2_cu *); | |
1043 | ||
801e3a5b JB |
1044 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1045 | CORE_ADDR, struct dwarf2_cu *); | |
1046 | ||
a14ed312 | 1047 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1048 | struct dwarf2_cu *); |
c906108c | 1049 | |
a14ed312 | 1050 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1051 | struct type *, struct dwarf2_cu *); |
c906108c | 1052 | |
a14ed312 | 1053 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1054 | struct die_info *, struct type *, |
e7c27a73 | 1055 | struct dwarf2_cu *); |
c906108c | 1056 | |
a14ed312 | 1057 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 1058 | struct type *, struct dwarf2_cu *); |
c906108c | 1059 | |
134d01f1 | 1060 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1061 | |
e7c27a73 | 1062 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1063 | |
e7c27a73 | 1064 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1065 | |
5d7cb8df JK |
1066 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1067 | ||
27aa8d6a SW |
1068 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1069 | ||
f55ee35c JK |
1070 | static struct type *read_module_type (struct die_info *die, |
1071 | struct dwarf2_cu *cu); | |
1072 | ||
38d518c9 | 1073 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1074 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1075 | |
134d01f1 | 1076 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1077 | |
e7c27a73 | 1078 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1079 | |
6e70227d | 1080 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1081 | struct dwarf2_cu *); |
1082 | ||
93311388 | 1083 | static struct die_info *read_comp_unit (gdb_byte *, struct dwarf2_cu *); |
c906108c | 1084 | |
93311388 DE |
1085 | static struct die_info *read_die_and_children_1 (const struct die_reader_specs *reader, |
1086 | gdb_byte *info_ptr, | |
d97bc12b DE |
1087 | gdb_byte **new_info_ptr, |
1088 | struct die_info *parent); | |
1089 | ||
93311388 DE |
1090 | static struct die_info *read_die_and_children (const struct die_reader_specs *reader, |
1091 | gdb_byte *info_ptr, | |
fe1b8b76 | 1092 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1093 | struct die_info *parent); |
1094 | ||
93311388 DE |
1095 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *reader, |
1096 | gdb_byte *info_ptr, | |
fe1b8b76 | 1097 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1098 | struct die_info *parent); |
1099 | ||
93311388 DE |
1100 | static gdb_byte *read_full_die (const struct die_reader_specs *reader, |
1101 | struct die_info **, gdb_byte *, | |
1102 | int *); | |
1103 | ||
e7c27a73 | 1104 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1105 | |
71c25dea TT |
1106 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1107 | struct obstack *); | |
1108 | ||
e142c38c | 1109 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1110 | |
98bfdba5 PA |
1111 | static const char *dwarf2_full_name (char *name, |
1112 | struct die_info *die, | |
1113 | struct dwarf2_cu *cu); | |
1114 | ||
e142c38c | 1115 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1116 | struct dwarf2_cu **); |
9219021c | 1117 | |
a14ed312 | 1118 | static char *dwarf_tag_name (unsigned int); |
c906108c | 1119 | |
a14ed312 | 1120 | static char *dwarf_attr_name (unsigned int); |
c906108c | 1121 | |
a14ed312 | 1122 | static char *dwarf_form_name (unsigned int); |
c906108c | 1123 | |
a14ed312 | 1124 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1125 | |
a14ed312 | 1126 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
1127 | |
1128 | #if 0 | |
a14ed312 | 1129 | static char *dwarf_cfi_name (unsigned int); |
c906108c SS |
1130 | #endif |
1131 | ||
f9aca02d | 1132 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1133 | |
d97bc12b DE |
1134 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1135 | ||
1136 | static void dump_die_for_error (struct die_info *); | |
1137 | ||
1138 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1139 | struct die_info *); | |
c906108c | 1140 | |
d97bc12b | 1141 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1142 | |
51545339 | 1143 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1144 | struct dwarf2_cu *); |
c906108c | 1145 | |
93311388 DE |
1146 | static int is_ref_attr (struct attribute *); |
1147 | ||
c764a876 | 1148 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1149 | |
43bbcdc2 | 1150 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1151 | |
348e048f DE |
1152 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1153 | struct attribute *, | |
1154 | struct dwarf2_cu **); | |
1155 | ||
10b3939b DJ |
1156 | static struct die_info *follow_die_ref (struct die_info *, |
1157 | struct attribute *, | |
f2f0e013 | 1158 | struct dwarf2_cu **); |
c906108c | 1159 | |
348e048f DE |
1160 | static struct die_info *follow_die_sig (struct die_info *, |
1161 | struct attribute *, | |
1162 | struct dwarf2_cu **); | |
1163 | ||
1164 | static void read_signatured_type_at_offset (struct objfile *objfile, | |
1165 | unsigned int offset); | |
1166 | ||
1167 | static void read_signatured_type (struct objfile *, | |
1168 | struct signatured_type *type_sig); | |
1169 | ||
c906108c SS |
1170 | /* memory allocation interface */ |
1171 | ||
7b5a2f43 | 1172 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1173 | |
f3dd6933 | 1174 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1175 | |
b60c80d6 | 1176 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1177 | |
e142c38c | 1178 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1179 | |
e142c38c DJ |
1180 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1181 | struct dwarf2_cu *); | |
5fb290d7 | 1182 | |
2e276125 | 1183 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1184 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1185 | |
8e19ed76 PS |
1186 | static int attr_form_is_block (struct attribute *); |
1187 | ||
3690dd37 JB |
1188 | static int attr_form_is_section_offset (struct attribute *); |
1189 | ||
1190 | static int attr_form_is_constant (struct attribute *); | |
1191 | ||
93e7bd98 DJ |
1192 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1193 | struct symbol *sym, | |
1194 | struct dwarf2_cu *cu); | |
4c2df51b | 1195 | |
93311388 DE |
1196 | static gdb_byte *skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
1197 | struct abbrev_info *abbrev, | |
1198 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1199 | |
72bf9492 DJ |
1200 | static void free_stack_comp_unit (void *); |
1201 | ||
72bf9492 DJ |
1202 | static hashval_t partial_die_hash (const void *item); |
1203 | ||
1204 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1205 | ||
ae038cb0 | 1206 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
c764a876 | 1207 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 DJ |
1208 | |
1209 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
c764a876 | 1210 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 | 1211 | |
93311388 DE |
1212 | static struct dwarf2_cu *alloc_one_comp_unit (struct objfile *objfile); |
1213 | ||
ae038cb0 DJ |
1214 | static void free_one_comp_unit (void *); |
1215 | ||
1216 | static void free_cached_comp_units (void *); | |
1217 | ||
1218 | static void age_cached_comp_units (void); | |
1219 | ||
1220 | static void free_one_cached_comp_unit (void *); | |
1221 | ||
f792889a DJ |
1222 | static struct type *set_die_type (struct die_info *, struct type *, |
1223 | struct dwarf2_cu *); | |
1c379e20 | 1224 | |
ae038cb0 DJ |
1225 | static void create_all_comp_units (struct objfile *); |
1226 | ||
1fd400ff TT |
1227 | static int create_debug_types_hash_table (struct objfile *objfile); |
1228 | ||
93311388 DE |
1229 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1230 | struct objfile *); | |
10b3939b DJ |
1231 | |
1232 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1233 | ||
1234 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1235 | struct dwarf2_per_cu_data *); | |
1236 | ||
ae038cb0 DJ |
1237 | static void dwarf2_mark (struct dwarf2_cu *); |
1238 | ||
1239 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1240 | ||
f792889a | 1241 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1242 | |
9291a0cd TT |
1243 | static void dwarf2_release_queue (void *dummy); |
1244 | ||
1245 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, | |
1246 | struct objfile *objfile); | |
1247 | ||
1248 | static void process_queue (struct objfile *objfile); | |
1249 | ||
1250 | static void find_file_and_directory (struct die_info *die, | |
1251 | struct dwarf2_cu *cu, | |
1252 | char **name, char **comp_dir); | |
1253 | ||
1254 | static char *file_full_name (int file, struct line_header *lh, | |
1255 | const char *comp_dir); | |
1256 | ||
1257 | static gdb_byte *partial_read_comp_unit_head (struct comp_unit_head *header, | |
1258 | gdb_byte *info_ptr, | |
1259 | gdb_byte *buffer, | |
1260 | unsigned int buffer_size, | |
1261 | bfd *abfd); | |
1262 | ||
1263 | static void init_cu_die_reader (struct die_reader_specs *reader, | |
1264 | struct dwarf2_cu *cu); | |
1265 | ||
1fd400ff TT |
1266 | static htab_t allocate_signatured_type_hash_table (struct objfile *objfile); |
1267 | ||
9291a0cd TT |
1268 | #if WORDS_BIGENDIAN |
1269 | ||
1270 | /* Convert VALUE between big- and little-endian. */ | |
1271 | static offset_type | |
1272 | byte_swap (offset_type value) | |
1273 | { | |
1274 | offset_type result; | |
1275 | ||
1276 | result = (value & 0xff) << 24; | |
1277 | result |= (value & 0xff00) << 8; | |
1278 | result |= (value & 0xff0000) >> 8; | |
1279 | result |= (value & 0xff000000) >> 24; | |
1280 | return result; | |
1281 | } | |
1282 | ||
1283 | #define MAYBE_SWAP(V) byte_swap (V) | |
1284 | ||
1285 | #else | |
1286 | #define MAYBE_SWAP(V) (V) | |
1287 | #endif /* WORDS_BIGENDIAN */ | |
1288 | ||
1289 | /* The suffix for an index file. */ | |
1290 | #define INDEX_SUFFIX ".gdb-index" | |
1291 | ||
c906108c SS |
1292 | /* Try to locate the sections we need for DWARF 2 debugging |
1293 | information and return true if we have enough to do something. */ | |
1294 | ||
1295 | int | |
6502dd73 | 1296 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1297 | { |
be391dca TT |
1298 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1299 | if (!dwarf2_per_objfile) | |
1300 | { | |
1301 | /* Initialize per-objfile state. */ | |
1302 | struct dwarf2_per_objfile *data | |
1303 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1304 | |
be391dca TT |
1305 | memset (data, 0, sizeof (*data)); |
1306 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1307 | dwarf2_per_objfile = data; | |
6502dd73 | 1308 | |
be391dca TT |
1309 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
1310 | dwarf2_per_objfile->objfile = objfile; | |
1311 | } | |
1312 | return (dwarf2_per_objfile->info.asection != NULL | |
1313 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1314 | } |
1315 | ||
233a11ab CS |
1316 | /* When loading sections, we can either look for ".<name>", or for |
1317 | * ".z<name>", which indicates a compressed section. */ | |
1318 | ||
1319 | static int | |
dce234bc | 1320 | section_is_p (const char *section_name, const char *name) |
233a11ab | 1321 | { |
dce234bc PP |
1322 | return (section_name[0] == '.' |
1323 | && (strcmp (section_name + 1, name) == 0 | |
1324 | || (section_name[1] == 'z' | |
1325 | && strcmp (section_name + 2, name) == 0))); | |
233a11ab CS |
1326 | } |
1327 | ||
c906108c SS |
1328 | /* This function is mapped across the sections and remembers the |
1329 | offset and size of each of the debugging sections we are interested | |
1330 | in. */ | |
1331 | ||
1332 | static void | |
72dca2f5 | 1333 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1334 | { |
dce234bc | 1335 | if (section_is_p (sectp->name, INFO_SECTION)) |
c906108c | 1336 | { |
dce234bc PP |
1337 | dwarf2_per_objfile->info.asection = sectp; |
1338 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1339 | } |
dce234bc | 1340 | else if (section_is_p (sectp->name, ABBREV_SECTION)) |
c906108c | 1341 | { |
dce234bc PP |
1342 | dwarf2_per_objfile->abbrev.asection = sectp; |
1343 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1344 | } |
dce234bc | 1345 | else if (section_is_p (sectp->name, LINE_SECTION)) |
c906108c | 1346 | { |
dce234bc PP |
1347 | dwarf2_per_objfile->line.asection = sectp; |
1348 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1349 | } |
dce234bc | 1350 | else if (section_is_p (sectp->name, LOC_SECTION)) |
c906108c | 1351 | { |
dce234bc PP |
1352 | dwarf2_per_objfile->loc.asection = sectp; |
1353 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1354 | } |
dce234bc | 1355 | else if (section_is_p (sectp->name, MACINFO_SECTION)) |
c906108c | 1356 | { |
dce234bc PP |
1357 | dwarf2_per_objfile->macinfo.asection = sectp; |
1358 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1359 | } |
dce234bc | 1360 | else if (section_is_p (sectp->name, STR_SECTION)) |
c906108c | 1361 | { |
dce234bc PP |
1362 | dwarf2_per_objfile->str.asection = sectp; |
1363 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1364 | } |
dce234bc | 1365 | else if (section_is_p (sectp->name, FRAME_SECTION)) |
b6af0555 | 1366 | { |
dce234bc PP |
1367 | dwarf2_per_objfile->frame.asection = sectp; |
1368 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1369 | } |
dce234bc | 1370 | else if (section_is_p (sectp->name, EH_FRAME_SECTION)) |
b6af0555 | 1371 | { |
3799ccc6 | 1372 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
9a619af0 | 1373 | |
3799ccc6 EZ |
1374 | if (aflag & SEC_HAS_CONTENTS) |
1375 | { | |
dce234bc PP |
1376 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1377 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1378 | } |
b6af0555 | 1379 | } |
dce234bc | 1380 | else if (section_is_p (sectp->name, RANGES_SECTION)) |
af34e669 | 1381 | { |
dce234bc PP |
1382 | dwarf2_per_objfile->ranges.asection = sectp; |
1383 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1384 | } |
348e048f DE |
1385 | else if (section_is_p (sectp->name, TYPES_SECTION)) |
1386 | { | |
1387 | dwarf2_per_objfile->types.asection = sectp; | |
1388 | dwarf2_per_objfile->types.size = bfd_get_section_size (sectp); | |
1389 | } | |
9291a0cd TT |
1390 | else if (section_is_p (sectp->name, GDB_INDEX_SECTION)) |
1391 | { | |
1392 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1393 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1394 | } | |
dce234bc | 1395 | |
72dca2f5 FR |
1396 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1397 | && bfd_section_vma (abfd, sectp) == 0) | |
1398 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1399 | } |
1400 | ||
dce234bc PP |
1401 | /* Decompress a section that was compressed using zlib. Store the |
1402 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1403 | |
1404 | static void | |
dce234bc PP |
1405 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1406 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1407 | { | |
1408 | bfd *abfd = objfile->obfd; | |
1409 | #ifndef HAVE_ZLIB_H | |
1410 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1411 | "is disabled in this copy of GDB"), | |
1412 | bfd_get_filename (abfd)); | |
1413 | #else | |
1414 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1415 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1416 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1417 | bfd_size_type uncompressed_size; |
1418 | gdb_byte *uncompressed_buffer; | |
1419 | z_stream strm; | |
1420 | int rc; | |
1421 | int header_size = 12; | |
1422 | ||
1423 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1424 | || bfd_bread (compressed_buffer, compressed_size, abfd) != compressed_size) | |
1425 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1426 | bfd_get_filename (abfd)); | |
1427 | ||
1428 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1429 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1430 | if (compressed_size < header_size | |
1431 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1432 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1433 | bfd_get_filename (abfd)); | |
1434 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1435 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1436 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1437 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1438 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1439 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1440 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1441 | uncompressed_size += compressed_buffer[11]; | |
1442 | ||
1443 | /* It is possible the section consists of several compressed | |
1444 | buffers concatenated together, so we uncompress in a loop. */ | |
1445 | strm.zalloc = NULL; | |
1446 | strm.zfree = NULL; | |
1447 | strm.opaque = NULL; | |
1448 | strm.avail_in = compressed_size - header_size; | |
1449 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1450 | strm.avail_out = uncompressed_size; | |
1451 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1452 | uncompressed_size); | |
1453 | rc = inflateInit (&strm); | |
1454 | while (strm.avail_in > 0) | |
1455 | { | |
1456 | if (rc != Z_OK) | |
1457 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1458 | bfd_get_filename (abfd), rc); | |
1459 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1460 | + (uncompressed_size - strm.avail_out)); | |
1461 | rc = inflate (&strm, Z_FINISH); | |
1462 | if (rc != Z_STREAM_END) | |
1463 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1464 | bfd_get_filename (abfd), rc); | |
1465 | rc = inflateReset (&strm); | |
1466 | } | |
1467 | rc = inflateEnd (&strm); | |
1468 | if (rc != Z_OK | |
1469 | || strm.avail_out != 0) | |
1470 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1471 | bfd_get_filename (abfd), rc); | |
1472 | ||
affddf13 | 1473 | do_cleanups (cleanup); |
dce234bc PP |
1474 | *outbuf = uncompressed_buffer; |
1475 | *outsize = uncompressed_size; | |
1476 | #endif | |
233a11ab CS |
1477 | } |
1478 | ||
dce234bc PP |
1479 | /* Read the contents of the section SECTP from object file specified by |
1480 | OBJFILE, store info about the section into INFO. | |
1481 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 1482 | |
dce234bc PP |
1483 | static void |
1484 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1485 | { |
dce234bc PP |
1486 | bfd *abfd = objfile->obfd; |
1487 | asection *sectp = info->asection; | |
1488 | gdb_byte *buf, *retbuf; | |
1489 | unsigned char header[4]; | |
c906108c | 1490 | |
be391dca TT |
1491 | if (info->readin) |
1492 | return; | |
dce234bc PP |
1493 | info->buffer = NULL; |
1494 | info->was_mmapped = 0; | |
be391dca | 1495 | info->readin = 1; |
188dd5d6 | 1496 | |
dce234bc PP |
1497 | if (info->asection == NULL || info->size == 0) |
1498 | return; | |
c906108c | 1499 | |
dce234bc PP |
1500 | /* Check if the file has a 4-byte header indicating compression. */ |
1501 | if (info->size > sizeof (header) | |
1502 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1503 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1504 | { | |
1505 | /* Upon decompression, update the buffer and its size. */ | |
1506 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1507 | { | |
1508 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1509 | &info->size); | |
1510 | return; | |
1511 | } | |
1512 | } | |
4bdf3d34 | 1513 | |
dce234bc PP |
1514 | #ifdef HAVE_MMAP |
1515 | if (pagesize == 0) | |
1516 | pagesize = getpagesize (); | |
2e276125 | 1517 | |
dce234bc PP |
1518 | /* Only try to mmap sections which are large enough: we don't want to |
1519 | waste space due to fragmentation. Also, only try mmap for sections | |
1520 | without relocations. */ | |
1521 | ||
1522 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1523 | { | |
1524 | off_t pg_offset = sectp->filepos & ~(pagesize - 1); | |
1525 | size_t map_length = info->size + sectp->filepos - pg_offset; | |
1526 | caddr_t retbuf = bfd_mmap (abfd, 0, map_length, PROT_READ, | |
1527 | MAP_PRIVATE, pg_offset); | |
1528 | ||
1529 | if (retbuf != MAP_FAILED) | |
1530 | { | |
1531 | info->was_mmapped = 1; | |
1532 | info->buffer = retbuf + (sectp->filepos & (pagesize - 1)) ; | |
be391dca TT |
1533 | #if HAVE_POSIX_MADVISE |
1534 | posix_madvise (retbuf, map_length, POSIX_MADV_WILLNEED); | |
1535 | #endif | |
dce234bc PP |
1536 | return; |
1537 | } | |
1538 | } | |
1539 | #endif | |
1540 | ||
1541 | /* If we get here, we are a normal, not-compressed section. */ | |
1542 | info->buffer = buf | |
1543 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1544 | ||
1545 | /* When debugging .o files, we may need to apply relocations; see | |
1546 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1547 | We never compress sections in .o files, so we only need to | |
1548 | try this when the section is not compressed. */ | |
ac8035ab | 1549 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1550 | if (retbuf != NULL) |
1551 | { | |
1552 | info->buffer = retbuf; | |
1553 | return; | |
1554 | } | |
1555 | ||
1556 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1557 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1558 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1559 | bfd_get_filename (abfd)); | |
1560 | } | |
1561 | ||
1562 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and | |
1563 | SECTION_NAME. */ | |
af34e669 | 1564 | |
dce234bc PP |
1565 | void |
1566 | dwarf2_get_section_info (struct objfile *objfile, const char *section_name, | |
1567 | asection **sectp, gdb_byte **bufp, | |
1568 | bfd_size_type *sizep) | |
1569 | { | |
1570 | struct dwarf2_per_objfile *data | |
1571 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1572 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1573 | |
1574 | /* We may see an objfile without any DWARF, in which case we just | |
1575 | return nothing. */ | |
1576 | if (data == NULL) | |
1577 | { | |
1578 | *sectp = NULL; | |
1579 | *bufp = NULL; | |
1580 | *sizep = 0; | |
1581 | return; | |
1582 | } | |
dce234bc PP |
1583 | if (section_is_p (section_name, EH_FRAME_SECTION)) |
1584 | info = &data->eh_frame; | |
1585 | else if (section_is_p (section_name, FRAME_SECTION)) | |
1586 | info = &data->frame; | |
0d53c4c4 | 1587 | else |
dce234bc PP |
1588 | gdb_assert (0); |
1589 | ||
1590 | if (info->asection != NULL && info->size != 0 && info->buffer == NULL) | |
1591 | /* We haven't read this section in yet. Do it now. */ | |
1592 | dwarf2_read_section (objfile, info); | |
1593 | ||
1594 | *sectp = info->asection; | |
1595 | *bufp = info->buffer; | |
1596 | *sizep = info->size; | |
1597 | } | |
1598 | ||
9291a0cd TT |
1599 | \f |
1600 | ||
1601 | /* Read in the symbols for PER_CU. OBJFILE is the objfile from which | |
1602 | this CU came. */ | |
1603 | static void | |
1604 | dw2_do_instantiate_symtab (struct objfile *objfile, | |
1605 | struct dwarf2_per_cu_data *per_cu) | |
1606 | { | |
1607 | struct cleanup *back_to; | |
1608 | ||
1609 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
1610 | ||
1611 | queue_comp_unit (per_cu, objfile); | |
1612 | ||
1613 | if (per_cu->from_debug_types) | |
1614 | read_signatured_type_at_offset (objfile, per_cu->offset); | |
1615 | else | |
1616 | load_full_comp_unit (per_cu, objfile); | |
1617 | ||
1618 | process_queue (objfile); | |
1619 | ||
1620 | /* Age the cache, releasing compilation units that have not | |
1621 | been used recently. */ | |
1622 | age_cached_comp_units (); | |
1623 | ||
1624 | do_cleanups (back_to); | |
1625 | } | |
1626 | ||
1627 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
1628 | the objfile from which this CU came. Returns the resulting symbol | |
1629 | table. */ | |
1630 | static struct symtab * | |
1631 | dw2_instantiate_symtab (struct objfile *objfile, | |
1632 | struct dwarf2_per_cu_data *per_cu) | |
1633 | { | |
1634 | if (!per_cu->v.quick->symtab) | |
1635 | { | |
1636 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
1637 | increment_reading_symtab (); | |
1638 | dw2_do_instantiate_symtab (objfile, per_cu); | |
1639 | do_cleanups (back_to); | |
1640 | } | |
1641 | return per_cu->v.quick->symtab; | |
1642 | } | |
1643 | ||
1fd400ff TT |
1644 | /* Return the CU given its index. */ |
1645 | static struct dwarf2_per_cu_data * | |
1646 | dw2_get_cu (int index) | |
1647 | { | |
1648 | if (index >= dwarf2_per_objfile->n_comp_units) | |
1649 | { | |
1650 | index -= dwarf2_per_objfile->n_comp_units; | |
1651 | return dwarf2_per_objfile->type_comp_units[index]; | |
1652 | } | |
1653 | return dwarf2_per_objfile->all_comp_units[index]; | |
1654 | } | |
1655 | ||
9291a0cd TT |
1656 | /* A helper function that knows how to read a 64-bit value in a way |
1657 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
1658 | otherwise. */ | |
1659 | static int | |
1660 | extract_cu_value (const char *bytes, ULONGEST *result) | |
1661 | { | |
1662 | if (sizeof (ULONGEST) < 8) | |
1663 | { | |
1664 | int i; | |
1665 | ||
1666 | /* Ignore the upper 4 bytes if they are all zero. */ | |
1667 | for (i = 0; i < 4; ++i) | |
1668 | if (bytes[i + 4] != 0) | |
1669 | return 0; | |
1670 | ||
1671 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
1672 | } | |
1673 | else | |
1674 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
1675 | return 1; | |
1676 | } | |
1677 | ||
1678 | /* Read the CU list from the mapped index, and use it to create all | |
1679 | the CU objects for this objfile. Return 0 if something went wrong, | |
1680 | 1 if everything went ok. */ | |
1681 | static int | |
1fd400ff TT |
1682 | create_cus_from_index (struct objfile *objfile, const gdb_byte *cu_list, |
1683 | offset_type cu_list_elements) | |
9291a0cd TT |
1684 | { |
1685 | offset_type i; | |
9291a0cd TT |
1686 | |
1687 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
1688 | dwarf2_per_objfile->all_comp_units | |
1689 | = obstack_alloc (&objfile->objfile_obstack, | |
1690 | dwarf2_per_objfile->n_comp_units | |
1691 | * sizeof (struct dwarf2_per_cu_data *)); | |
1692 | ||
1693 | for (i = 0; i < cu_list_elements; i += 2) | |
1694 | { | |
1695 | struct dwarf2_per_cu_data *the_cu; | |
1696 | ULONGEST offset, length; | |
1697 | ||
1698 | if (!extract_cu_value (cu_list, &offset) | |
1699 | || !extract_cu_value (cu_list + 8, &length)) | |
1700 | return 0; | |
1701 | cu_list += 2 * 8; | |
1702 | ||
1703 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1704 | struct dwarf2_per_cu_data); | |
1705 | the_cu->offset = offset; | |
1706 | the_cu->length = length; | |
1707 | the_cu->objfile = objfile; | |
1708 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1709 | struct dwarf2_per_cu_quick_data); | |
1710 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
1711 | } | |
1712 | ||
1713 | return 1; | |
1714 | } | |
1715 | ||
1fd400ff TT |
1716 | /* Create the signatured type hash table from the index. */ |
1717 | static int | |
1718 | create_signatured_type_hash_from_index (struct objfile *objfile, | |
1719 | const gdb_byte *bytes, | |
1720 | offset_type elements) | |
1721 | { | |
1722 | offset_type i; | |
1723 | htab_t type_hash; | |
1724 | ||
1725 | dwarf2_per_objfile->n_type_comp_units = elements / 3; | |
1726 | dwarf2_per_objfile->type_comp_units | |
1727 | = obstack_alloc (&objfile->objfile_obstack, | |
1728 | dwarf2_per_objfile->n_type_comp_units | |
1729 | * sizeof (struct dwarf2_per_cu_data *)); | |
1730 | ||
1731 | type_hash = allocate_signatured_type_hash_table (objfile); | |
1732 | ||
1733 | for (i = 0; i < elements; i += 3) | |
1734 | { | |
1735 | struct signatured_type *type_sig; | |
1736 | ULONGEST offset, type_offset, signature; | |
1737 | void **slot; | |
1738 | ||
1739 | if (!extract_cu_value (bytes, &offset) | |
1740 | || !extract_cu_value (bytes + 8, &type_offset)) | |
1741 | return 0; | |
1742 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); | |
1743 | bytes += 3 * 8; | |
1744 | ||
1745 | type_sig = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1746 | struct signatured_type); | |
1747 | type_sig->signature = signature; | |
1748 | type_sig->offset = offset; | |
1749 | type_sig->type_offset = type_offset; | |
1750 | type_sig->per_cu.from_debug_types = 1; | |
1751 | type_sig->per_cu.offset = offset; | |
1752 | type_sig->per_cu.objfile = objfile; | |
1753 | type_sig->per_cu.v.quick | |
1754 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1755 | struct dwarf2_per_cu_quick_data); | |
1756 | ||
1757 | slot = htab_find_slot (type_hash, type_sig, INSERT); | |
1758 | *slot = type_sig; | |
1759 | ||
1760 | dwarf2_per_objfile->type_comp_units[i / 3] = &type_sig->per_cu; | |
1761 | } | |
1762 | ||
1763 | dwarf2_per_objfile->signatured_types = type_hash; | |
1764 | ||
1765 | return 1; | |
1766 | } | |
1767 | ||
9291a0cd TT |
1768 | /* Read the address map data from the mapped index, and use it to |
1769 | populate the objfile's psymtabs_addrmap. */ | |
1770 | static void | |
1771 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
1772 | { | |
1773 | const gdb_byte *iter, *end; | |
1774 | struct obstack temp_obstack; | |
1775 | struct addrmap *mutable_map; | |
1776 | struct cleanup *cleanup; | |
1777 | CORE_ADDR baseaddr; | |
1778 | ||
1779 | obstack_init (&temp_obstack); | |
1780 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
1781 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
1782 | ||
1783 | iter = index->address_table; | |
1784 | end = iter + index->address_table_size; | |
1785 | ||
1786 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1787 | ||
1788 | while (iter < end) | |
1789 | { | |
1790 | ULONGEST hi, lo, cu_index; | |
1791 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1792 | iter += 8; | |
1793 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1794 | iter += 8; | |
1795 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
1796 | iter += 4; | |
1797 | ||
1798 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1fd400ff | 1799 | dw2_get_cu (cu_index)); |
9291a0cd TT |
1800 | } |
1801 | ||
1802 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
1803 | &objfile->objfile_obstack); | |
1804 | do_cleanups (cleanup); | |
1805 | } | |
1806 | ||
1807 | /* The hash function for strings in the mapped index. This is the | |
1808 | same as the hashtab.c hash function, but we keep a separate copy to | |
1809 | maintain control over the implementation. This is necessary | |
1810 | because the hash function is tied to the format of the mapped index | |
1811 | file. */ | |
1812 | static hashval_t | |
1813 | mapped_index_string_hash (const void *p) | |
1814 | { | |
1815 | const unsigned char *str = (const unsigned char *) p; | |
1816 | hashval_t r = 0; | |
1817 | unsigned char c; | |
1818 | ||
1819 | while ((c = *str++) != 0) | |
1820 | r = r * 67 + c - 113; | |
1821 | ||
1822 | return r; | |
1823 | } | |
1824 | ||
1825 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
1826 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
1827 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
1828 | static int | |
1829 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
1830 | offset_type **vec_out) | |
1831 | { | |
1832 | offset_type hash = mapped_index_string_hash (name); | |
1833 | offset_type slot, step; | |
1834 | ||
1835 | slot = hash & (index->index_table_slots - 1); | |
1836 | step = ((hash * 17) & (index->index_table_slots - 1)) | 1; | |
1837 | ||
1838 | for (;;) | |
1839 | { | |
1840 | /* Convert a slot number to an offset into the table. */ | |
1841 | offset_type i = 2 * slot; | |
1842 | const char *str; | |
1843 | if (index->index_table[i] == 0 && index->index_table[i + 1] == 0) | |
1844 | return 0; | |
1845 | ||
1846 | str = index->constant_pool + MAYBE_SWAP (index->index_table[i]); | |
1847 | if (!strcmp (name, str)) | |
1848 | { | |
1849 | *vec_out = (offset_type *) (index->constant_pool | |
1850 | + MAYBE_SWAP (index->index_table[i + 1])); | |
1851 | return 1; | |
1852 | } | |
1853 | ||
1854 | slot = (slot + step) & (index->index_table_slots - 1); | |
1855 | } | |
1856 | } | |
1857 | ||
1858 | /* Read the index file. If everything went ok, initialize the "quick" | |
1859 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
1860 | static int | |
1861 | dwarf2_read_index (struct objfile *objfile) | |
1862 | { | |
9291a0cd TT |
1863 | char *addr; |
1864 | struct mapped_index *map; | |
b3b272e1 | 1865 | offset_type *metadata; |
ac0b195c KW |
1866 | const gdb_byte *cu_list; |
1867 | const gdb_byte *types_list = NULL; | |
1868 | offset_type version, cu_list_elements; | |
1869 | offset_type types_list_elements = 0; | |
1fd400ff | 1870 | int i; |
9291a0cd TT |
1871 | |
1872 | if (dwarf2_per_objfile->gdb_index.asection == NULL | |
1873 | || dwarf2_per_objfile->gdb_index.size == 0) | |
1874 | return 0; | |
1875 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); | |
1876 | ||
1877 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
1878 | /* Version check. */ | |
1fd400ff TT |
1879 | version = MAYBE_SWAP (*(offset_type *) addr); |
1880 | if (version == 1) | |
1881 | { | |
1882 | /* Index version 1 neglected to account for .debug_types. So, | |
1883 | if we see .debug_types, we cannot use this index. */ | |
1884 | if (dwarf2_per_objfile->types.asection != NULL | |
1885 | && dwarf2_per_objfile->types.size != 0) | |
1886 | return 0; | |
1887 | } | |
1888 | else if (version != 2) | |
9291a0cd TT |
1889 | return 0; |
1890 | ||
1891 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
b3b272e1 | 1892 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
1893 | |
1894 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1fd400ff TT |
1895 | |
1896 | i = 0; | |
1897 | cu_list = addr + MAYBE_SWAP (metadata[i]); | |
1898 | cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 1899 | / 8); |
1fd400ff TT |
1900 | ++i; |
1901 | ||
1902 | if (version == 2) | |
1903 | { | |
1904 | types_list = addr + MAYBE_SWAP (metadata[i]); | |
1905 | types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
1906 | - MAYBE_SWAP (metadata[i])) | |
1907 | / 8); | |
1908 | ++i; | |
1909 | } | |
1910 | ||
1911 | map->address_table = addr + MAYBE_SWAP (metadata[i]); | |
1912 | map->address_table_size = (MAYBE_SWAP (metadata[i + 1]) | |
1913 | - MAYBE_SWAP (metadata[i])); | |
1914 | ++i; | |
1915 | ||
1916 | map->index_table = (offset_type *) (addr + MAYBE_SWAP (metadata[i])); | |
1917 | map->index_table_slots = ((MAYBE_SWAP (metadata[i + 1]) | |
1918 | - MAYBE_SWAP (metadata[i])) | |
9291a0cd | 1919 | / (2 * sizeof (offset_type))); |
1fd400ff | 1920 | ++i; |
9291a0cd | 1921 | |
1fd400ff TT |
1922 | map->constant_pool = addr + MAYBE_SWAP (metadata[i]); |
1923 | ||
1924 | if (!create_cus_from_index (objfile, cu_list, cu_list_elements)) | |
1925 | return 0; | |
1926 | ||
1927 | if (version == 2 | |
1928 | && types_list_elements | |
1929 | && !create_signatured_type_hash_from_index (objfile, types_list, | |
1930 | types_list_elements)) | |
9291a0cd TT |
1931 | return 0; |
1932 | ||
1933 | create_addrmap_from_index (objfile, map); | |
1934 | ||
1935 | dwarf2_per_objfile->index_table = map; | |
1936 | dwarf2_per_objfile->using_index = 1; | |
1937 | ||
1938 | return 1; | |
1939 | } | |
1940 | ||
1941 | /* A helper for the "quick" functions which sets the global | |
1942 | dwarf2_per_objfile according to OBJFILE. */ | |
1943 | static void | |
1944 | dw2_setup (struct objfile *objfile) | |
1945 | { | |
1946 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
1947 | gdb_assert (dwarf2_per_objfile); | |
1948 | } | |
1949 | ||
1950 | /* A helper for the "quick" functions which attempts to read the line | |
1951 | table for THIS_CU. */ | |
1952 | static void | |
1953 | dw2_require_line_header (struct objfile *objfile, | |
1954 | struct dwarf2_per_cu_data *this_cu) | |
1955 | { | |
1956 | bfd *abfd = objfile->obfd; | |
1957 | struct line_header *lh = NULL; | |
1958 | struct attribute *attr; | |
1959 | struct cleanup *cleanups; | |
1960 | struct die_info *comp_unit_die; | |
1961 | gdb_byte *beg_of_comp_unit, *info_ptr, *buffer; | |
1962 | int has_children, i; | |
1963 | struct dwarf2_cu cu; | |
1964 | unsigned int bytes_read, buffer_size; | |
1965 | struct die_reader_specs reader_specs; | |
1966 | char *name, *comp_dir; | |
1967 | ||
1968 | if (this_cu->v.quick->read_lines) | |
1969 | return; | |
1970 | this_cu->v.quick->read_lines = 1; | |
1971 | ||
1972 | memset (&cu, 0, sizeof (cu)); | |
1973 | cu.objfile = objfile; | |
1974 | obstack_init (&cu.comp_unit_obstack); | |
1975 | ||
1976 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
1977 | ||
1978 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
1979 | buffer_size = dwarf2_per_objfile->info.size; | |
1980 | buffer = dwarf2_per_objfile->info.buffer; | |
1981 | info_ptr = buffer + this_cu->offset; | |
1982 | beg_of_comp_unit = info_ptr; | |
1983 | ||
1984 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, | |
1985 | buffer, buffer_size, | |
1986 | abfd); | |
1987 | ||
1988 | /* Complete the cu_header. */ | |
1989 | cu.header.offset = beg_of_comp_unit - buffer; | |
1990 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
1991 | ||
1992 | this_cu->cu = &cu; | |
1993 | cu.per_cu = this_cu; | |
1994 | ||
1995 | dwarf2_read_abbrevs (abfd, &cu); | |
1996 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
1997 | ||
1998 | if (this_cu->from_debug_types) | |
1999 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
2000 | init_cu_die_reader (&reader_specs, &cu); | |
2001 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
2002 | &has_children); | |
2003 | ||
2004 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, &cu); | |
2005 | if (attr) | |
2006 | { | |
2007 | unsigned int line_offset = DW_UNSND (attr); | |
2008 | lh = dwarf_decode_line_header (line_offset, abfd, &cu); | |
2009 | } | |
2010 | if (lh == NULL) | |
2011 | { | |
2012 | do_cleanups (cleanups); | |
2013 | return; | |
2014 | } | |
2015 | ||
2016 | find_file_and_directory (comp_unit_die, &cu, &name, &comp_dir); | |
2017 | ||
2018 | this_cu->v.quick->lines = lh; | |
2019 | ||
2020 | this_cu->v.quick->file_names | |
2021 | = obstack_alloc (&objfile->objfile_obstack, | |
2022 | lh->num_file_names * sizeof (char *)); | |
2023 | for (i = 0; i < lh->num_file_names; ++i) | |
2024 | this_cu->v.quick->file_names[i] = file_full_name (i + 1, lh, comp_dir); | |
2025 | ||
2026 | do_cleanups (cleanups); | |
2027 | } | |
2028 | ||
2029 | /* A helper for the "quick" functions which computes and caches the | |
2030 | real path for a given file name from the line table. | |
2031 | dw2_require_line_header must have been called before this is | |
2032 | invoked. */ | |
2033 | static const char * | |
2034 | dw2_require_full_path (struct objfile *objfile, | |
2035 | struct dwarf2_per_cu_data *cu, | |
2036 | int index) | |
2037 | { | |
2038 | if (!cu->v.quick->full_names) | |
2039 | cu->v.quick->full_names | |
2040 | = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
2041 | cu->v.quick->lines->num_file_names, | |
2042 | sizeof (char *)); | |
2043 | ||
2044 | if (!cu->v.quick->full_names[index]) | |
2045 | cu->v.quick->full_names[index] | |
2046 | = gdb_realpath (cu->v.quick->file_names[index]); | |
2047 | ||
2048 | return cu->v.quick->full_names[index]; | |
2049 | } | |
2050 | ||
2051 | static struct symtab * | |
2052 | dw2_find_last_source_symtab (struct objfile *objfile) | |
2053 | { | |
2054 | int index; | |
2055 | dw2_setup (objfile); | |
2056 | index = dwarf2_per_objfile->n_comp_units - 1; | |
1fd400ff | 2057 | return dw2_instantiate_symtab (objfile, dw2_get_cu (index)); |
9291a0cd TT |
2058 | } |
2059 | ||
2060 | static void | |
2061 | dw2_forget_cached_source_info (struct objfile *objfile) | |
2062 | { | |
2063 | int i; | |
2064 | ||
2065 | dw2_setup (objfile); | |
1fd400ff TT |
2066 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2067 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2068 | { |
1fd400ff | 2069 | struct dwarf2_per_cu_data *cu = dw2_get_cu (i); |
9291a0cd TT |
2070 | |
2071 | if (cu->v.quick->full_names) | |
2072 | { | |
2073 | int j; | |
2074 | ||
2075 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
2076 | xfree ((void *) cu->v.quick->full_names[j]); | |
2077 | } | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | static int | |
2082 | dw2_lookup_symtab (struct objfile *objfile, const char *name, | |
2083 | const char *full_path, const char *real_path, | |
2084 | struct symtab **result) | |
2085 | { | |
2086 | int i; | |
2087 | int check_basename = lbasename (name) == name; | |
2088 | struct dwarf2_per_cu_data *base_cu = NULL; | |
2089 | ||
2090 | dw2_setup (objfile); | |
1fd400ff TT |
2091 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2092 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2093 | { |
2094 | int j; | |
1fd400ff | 2095 | struct dwarf2_per_cu_data *cu = dw2_get_cu (i); |
9291a0cd TT |
2096 | |
2097 | if (cu->v.quick->symtab) | |
2098 | continue; | |
2099 | ||
2100 | dw2_require_line_header (objfile, cu); | |
2101 | if (!cu->v.quick->lines) | |
2102 | continue; | |
2103 | ||
2104 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
2105 | { | |
2106 | const char *this_name = cu->v.quick->file_names[j]; | |
2107 | ||
2108 | if (FILENAME_CMP (name, this_name) == 0) | |
2109 | { | |
2110 | *result = dw2_instantiate_symtab (objfile, cu); | |
2111 | return 1; | |
2112 | } | |
2113 | ||
2114 | if (check_basename && ! base_cu | |
2115 | && FILENAME_CMP (lbasename (this_name), name) == 0) | |
2116 | base_cu = cu; | |
2117 | ||
2118 | if (full_path != NULL) | |
2119 | { | |
2120 | const char *this_full_name = dw2_require_full_path (objfile, | |
2121 | cu, j); | |
2122 | ||
2123 | if (this_full_name | |
2124 | && FILENAME_CMP (full_path, this_full_name) == 0) | |
2125 | { | |
2126 | *result = dw2_instantiate_symtab (objfile, cu); | |
2127 | return 1; | |
2128 | } | |
2129 | } | |
2130 | ||
2131 | if (real_path != NULL) | |
2132 | { | |
2133 | const char *this_full_name = dw2_require_full_path (objfile, | |
2134 | cu, j); | |
2135 | ||
2136 | if (this_full_name != NULL) | |
2137 | { | |
2138 | char *rp = gdb_realpath (this_full_name); | |
2139 | if (rp != NULL && FILENAME_CMP (real_path, rp) == 0) | |
2140 | { | |
2141 | xfree (rp); | |
2142 | *result = dw2_instantiate_symtab (objfile, cu); | |
2143 | return 1; | |
2144 | } | |
2145 | xfree (rp); | |
2146 | } | |
2147 | } | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | if (base_cu) | |
2152 | { | |
2153 | *result = dw2_instantiate_symtab (objfile, base_cu); | |
2154 | return 1; | |
2155 | } | |
2156 | ||
2157 | return 0; | |
2158 | } | |
2159 | ||
2160 | static struct symtab * | |
2161 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2162 | const char *name, domain_enum domain) | |
2163 | { | |
2164 | /* We do all the work in the pre_expand_symtabs_matching hook | |
2165 | instead. */ | |
2166 | return NULL; | |
2167 | } | |
2168 | ||
2169 | /* A helper function that expands all symtabs that hold an object | |
2170 | named NAME. */ | |
2171 | static void | |
2172 | dw2_do_expand_symtabs_matching (struct objfile *objfile, const char *name) | |
2173 | { | |
2174 | dw2_setup (objfile); | |
2175 | ||
2176 | if (dwarf2_per_objfile->index_table) | |
2177 | { | |
2178 | offset_type *vec; | |
2179 | ||
2180 | if (find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2181 | name, &vec)) | |
2182 | { | |
2183 | offset_type i, len = MAYBE_SWAP (*vec); | |
2184 | for (i = 0; i < len; ++i) | |
2185 | { | |
2186 | offset_type cu_index = MAYBE_SWAP (vec[i + 1]); | |
1fd400ff TT |
2187 | struct dwarf2_per_cu_data *cu = dw2_get_cu (cu_index); |
2188 | ||
9291a0cd TT |
2189 | dw2_instantiate_symtab (objfile, cu); |
2190 | } | |
2191 | } | |
2192 | } | |
2193 | } | |
2194 | ||
2195 | static void | |
2196 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
2197 | int kind, const char *name, | |
2198 | domain_enum domain) | |
2199 | { | |
2200 | dw2_do_expand_symtabs_matching (objfile, name); | |
2201 | } | |
2202 | ||
2203 | static void | |
2204 | dw2_print_stats (struct objfile *objfile) | |
2205 | { | |
2206 | int i, count; | |
2207 | ||
2208 | dw2_setup (objfile); | |
2209 | count = 0; | |
1fd400ff TT |
2210 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2211 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2212 | { |
1fd400ff | 2213 | struct dwarf2_per_cu_data *cu = dw2_get_cu (i); |
9291a0cd TT |
2214 | |
2215 | if (!cu->v.quick->symtab) | |
2216 | ++count; | |
2217 | } | |
2218 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2219 | } | |
2220 | ||
2221 | static void | |
2222 | dw2_dump (struct objfile *objfile) | |
2223 | { | |
2224 | /* Nothing worth printing. */ | |
2225 | } | |
2226 | ||
2227 | static void | |
2228 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2229 | struct section_offsets *delta) | |
2230 | { | |
2231 | /* There's nothing to relocate here. */ | |
2232 | } | |
2233 | ||
2234 | static void | |
2235 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2236 | const char *func_name) | |
2237 | { | |
2238 | dw2_do_expand_symtabs_matching (objfile, func_name); | |
2239 | } | |
2240 | ||
2241 | static void | |
2242 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2243 | { | |
2244 | int i; | |
2245 | ||
2246 | dw2_setup (objfile); | |
1fd400ff TT |
2247 | |
2248 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units | |
2249 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2250 | { |
1fd400ff | 2251 | struct dwarf2_per_cu_data *cu = dw2_get_cu (i); |
9291a0cd TT |
2252 | |
2253 | dw2_instantiate_symtab (objfile, cu); | |
2254 | } | |
2255 | } | |
2256 | ||
2257 | static void | |
2258 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2259 | const char *filename) | |
2260 | { | |
2261 | int i; | |
2262 | ||
2263 | dw2_setup (objfile); | |
1fd400ff TT |
2264 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2265 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2266 | { |
2267 | int j; | |
1fd400ff | 2268 | struct dwarf2_per_cu_data *cu = dw2_get_cu (i); |
9291a0cd TT |
2269 | |
2270 | if (cu->v.quick->symtab) | |
2271 | continue; | |
2272 | ||
2273 | dw2_require_line_header (objfile, cu); | |
2274 | if (!cu->v.quick->lines) | |
2275 | continue; | |
2276 | ||
2277 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
2278 | { | |
2279 | const char *this_name = cu->v.quick->file_names[j]; | |
2280 | if (strcmp (this_name, filename) == 0) | |
2281 | { | |
2282 | dw2_instantiate_symtab (objfile, cu); | |
2283 | break; | |
2284 | } | |
2285 | } | |
2286 | } | |
2287 | } | |
2288 | ||
dd786858 | 2289 | static const char * |
9291a0cd TT |
2290 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2291 | { | |
2292 | struct dwarf2_per_cu_data *cu; | |
2293 | offset_type *vec; | |
2294 | ||
2295 | dw2_setup (objfile); | |
2296 | ||
2297 | if (!dwarf2_per_objfile->index_table) | |
2298 | return NULL; | |
2299 | ||
2300 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2301 | name, &vec)) | |
2302 | return NULL; | |
2303 | ||
2304 | /* Note that this just looks at the very first one named NAME -- but | |
2305 | actually we are looking for a function. find_main_filename | |
2306 | should be rewritten so that it doesn't require a custom hook. It | |
2307 | could just use the ordinary symbol tables. */ | |
2308 | /* vec[0] is the length, which must always be >0. */ | |
1fd400ff | 2309 | cu = dw2_get_cu (MAYBE_SWAP (vec[1])); |
9291a0cd TT |
2310 | |
2311 | dw2_require_line_header (objfile, cu); | |
2312 | if (!cu->v.quick->lines) | |
2313 | return NULL; | |
2314 | ||
dd786858 | 2315 | return cu->v.quick->file_names[cu->v.quick->lines->num_file_names - 1]; |
9291a0cd TT |
2316 | } |
2317 | ||
2318 | static void | |
2319 | dw2_map_ada_symtabs (struct objfile *objfile, | |
2320 | int (*wild_match) (const char *, int, const char *), | |
2321 | int (*is_name_suffix) (const char *), | |
2322 | void (*callback) (struct objfile *, | |
2323 | struct symtab *, void *), | |
2324 | const char *name, int global, | |
2325 | domain_enum namespace, int wild, | |
2326 | void *data) | |
2327 | { | |
2328 | /* For now, we don't support Ada, so this function can't be | |
2329 | reached. */ | |
2330 | internal_error (__FILE__, __LINE__, | |
2331 | _("map_ada_symtabs called via index method")); | |
2332 | } | |
2333 | ||
2334 | static void | |
2335 | dw2_expand_symtabs_matching (struct objfile *objfile, | |
2336 | int (*file_matcher) (const char *, void *), | |
2337 | int (*name_matcher) (const char *, void *), | |
2338 | domain_enum kind, | |
2339 | void *data) | |
2340 | { | |
2341 | int i; | |
2342 | offset_type iter; | |
2343 | ||
2344 | dw2_setup (objfile); | |
2345 | if (!dwarf2_per_objfile->index_table) | |
2346 | return; | |
2347 | ||
1fd400ff TT |
2348 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2349 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2350 | { |
2351 | int j; | |
1fd400ff | 2352 | struct dwarf2_per_cu_data *cu = dw2_get_cu (i); |
9291a0cd TT |
2353 | |
2354 | cu->v.quick->mark = 0; | |
2355 | if (cu->v.quick->symtab) | |
2356 | continue; | |
2357 | ||
2358 | dw2_require_line_header (objfile, cu); | |
2359 | if (!cu->v.quick->lines) | |
2360 | continue; | |
2361 | ||
2362 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
2363 | { | |
2364 | if (file_matcher (cu->v.quick->file_names[j], data)) | |
2365 | { | |
2366 | cu->v.quick->mark = 1; | |
2367 | break; | |
2368 | } | |
2369 | } | |
2370 | } | |
2371 | ||
2372 | for (iter = 0; | |
2373 | iter < dwarf2_per_objfile->index_table->index_table_slots; | |
2374 | ++iter) | |
2375 | { | |
2376 | offset_type idx = 2 * iter; | |
2377 | const char *name; | |
2378 | offset_type *vec, vec_len, vec_idx; | |
2379 | ||
2380 | if (dwarf2_per_objfile->index_table->index_table[idx] == 0 | |
2381 | && dwarf2_per_objfile->index_table->index_table[idx + 1] == 0) | |
2382 | continue; | |
2383 | ||
2384 | name = (dwarf2_per_objfile->index_table->constant_pool | |
2385 | + dwarf2_per_objfile->index_table->index_table[idx]); | |
2386 | ||
2387 | if (! (*name_matcher) (name, data)) | |
2388 | continue; | |
2389 | ||
2390 | /* The name was matched, now expand corresponding CUs that were | |
2391 | marked. */ | |
2392 | vec = (offset_type *) (dwarf2_per_objfile->index_table->constant_pool | |
2393 | + dwarf2_per_objfile->index_table->index_table[idx + 1]); | |
2394 | vec_len = MAYBE_SWAP (vec[0]); | |
2395 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
2396 | { | |
1fd400ff TT |
2397 | struct dwarf2_per_cu_data *cu; |
2398 | ||
2399 | cu = dw2_get_cu (MAYBE_SWAP (vec[vec_idx + 1])); | |
9291a0cd TT |
2400 | if (cu->v.quick->mark) |
2401 | dw2_instantiate_symtab (objfile, cu); | |
2402 | } | |
2403 | } | |
2404 | } | |
2405 | ||
2406 | static struct symtab * | |
2407 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
2408 | struct minimal_symbol *msymbol, | |
2409 | CORE_ADDR pc, | |
2410 | struct obj_section *section, | |
2411 | int warn_if_readin) | |
2412 | { | |
2413 | struct dwarf2_per_cu_data *data; | |
2414 | ||
2415 | dw2_setup (objfile); | |
2416 | ||
2417 | if (!objfile->psymtabs_addrmap) | |
2418 | return NULL; | |
2419 | ||
2420 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
2421 | if (!data) | |
2422 | return NULL; | |
2423 | ||
2424 | if (warn_if_readin && data->v.quick->symtab) | |
abebb8b0 | 2425 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), |
9291a0cd TT |
2426 | paddress (get_objfile_arch (objfile), pc)); |
2427 | ||
2428 | return dw2_instantiate_symtab (objfile, data); | |
2429 | } | |
2430 | ||
2431 | static void | |
2432 | dw2_map_symbol_names (struct objfile *objfile, | |
2433 | void (*fun) (const char *, void *), | |
2434 | void *data) | |
2435 | { | |
2436 | offset_type iter; | |
2437 | dw2_setup (objfile); | |
2438 | ||
2439 | if (!dwarf2_per_objfile->index_table) | |
2440 | return; | |
2441 | ||
2442 | for (iter = 0; | |
2443 | iter < dwarf2_per_objfile->index_table->index_table_slots; | |
2444 | ++iter) | |
2445 | { | |
2446 | offset_type idx = 2 * iter; | |
2447 | const char *name; | |
2448 | offset_type *vec, vec_len, vec_idx; | |
2449 | ||
2450 | if (dwarf2_per_objfile->index_table->index_table[idx] == 0 | |
2451 | && dwarf2_per_objfile->index_table->index_table[idx + 1] == 0) | |
2452 | continue; | |
2453 | ||
2454 | name = (dwarf2_per_objfile->index_table->constant_pool | |
2455 | + dwarf2_per_objfile->index_table->index_table[idx]); | |
2456 | ||
2457 | (*fun) (name, data); | |
2458 | } | |
2459 | } | |
2460 | ||
2461 | static void | |
2462 | dw2_map_symbol_filenames (struct objfile *objfile, | |
2463 | void (*fun) (const char *, const char *, void *), | |
2464 | void *data) | |
2465 | { | |
2466 | int i; | |
2467 | ||
2468 | dw2_setup (objfile); | |
1fd400ff TT |
2469 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2470 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd TT |
2471 | { |
2472 | int j; | |
1fd400ff | 2473 | struct dwarf2_per_cu_data *cu = dw2_get_cu (i); |
9291a0cd TT |
2474 | |
2475 | if (cu->v.quick->symtab) | |
2476 | continue; | |
2477 | ||
2478 | dw2_require_line_header (objfile, cu); | |
2479 | if (!cu->v.quick->lines) | |
2480 | continue; | |
2481 | ||
2482 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
2483 | { | |
2484 | const char *this_full_name = dw2_require_full_path (objfile, cu, j); | |
2485 | (*fun) (cu->v.quick->file_names[j], this_full_name, data); | |
2486 | } | |
2487 | } | |
2488 | } | |
2489 | ||
2490 | static int | |
2491 | dw2_has_symbols (struct objfile *objfile) | |
2492 | { | |
2493 | return 1; | |
2494 | } | |
2495 | ||
2496 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
2497 | { | |
2498 | dw2_has_symbols, | |
2499 | dw2_find_last_source_symtab, | |
2500 | dw2_forget_cached_source_info, | |
2501 | dw2_lookup_symtab, | |
2502 | dw2_lookup_symbol, | |
2503 | dw2_pre_expand_symtabs_matching, | |
2504 | dw2_print_stats, | |
2505 | dw2_dump, | |
2506 | dw2_relocate, | |
2507 | dw2_expand_symtabs_for_function, | |
2508 | dw2_expand_all_symtabs, | |
2509 | dw2_expand_symtabs_with_filename, | |
2510 | dw2_find_symbol_file, | |
2511 | dw2_map_ada_symtabs, | |
2512 | dw2_expand_symtabs_matching, | |
2513 | dw2_find_pc_sect_symtab, | |
2514 | dw2_map_symbol_names, | |
2515 | dw2_map_symbol_filenames | |
2516 | }; | |
2517 | ||
2518 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
2519 | file will use psymtabs, or 1 if using the GNU index. */ | |
2520 | ||
2521 | int | |
2522 | dwarf2_initialize_objfile (struct objfile *objfile) | |
2523 | { | |
2524 | /* If we're about to read full symbols, don't bother with the | |
2525 | indices. In this case we also don't care if some other debug | |
2526 | format is making psymtabs, because they are all about to be | |
2527 | expanded anyway. */ | |
2528 | if ((objfile->flags & OBJF_READNOW)) | |
2529 | { | |
2530 | int i; | |
2531 | ||
2532 | dwarf2_per_objfile->using_index = 1; | |
2533 | create_all_comp_units (objfile); | |
1fd400ff | 2534 | create_debug_types_hash_table (objfile); |
9291a0cd | 2535 | |
1fd400ff TT |
2536 | for (i = 0; i < (dwarf2_per_objfile->n_comp_units |
2537 | + dwarf2_per_objfile->n_type_comp_units); ++i) | |
9291a0cd | 2538 | { |
1fd400ff | 2539 | struct dwarf2_per_cu_data *cu = dw2_get_cu (i); |
9291a0cd TT |
2540 | |
2541 | cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2542 | struct dwarf2_per_cu_quick_data); | |
2543 | } | |
2544 | ||
2545 | /* Return 1 so that gdb sees the "quick" functions. However, | |
2546 | these functions will be no-ops because we will have expanded | |
2547 | all symtabs. */ | |
2548 | return 1; | |
2549 | } | |
2550 | ||
2551 | if (dwarf2_read_index (objfile)) | |
2552 | return 1; | |
2553 | ||
2554 | dwarf2_build_psymtabs (objfile); | |
2555 | return 0; | |
2556 | } | |
2557 | ||
2558 | \f | |
2559 | ||
dce234bc PP |
2560 | /* Build a partial symbol table. */ |
2561 | ||
2562 | void | |
f29dff0a | 2563 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 2564 | { |
f29dff0a | 2565 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
2566 | { |
2567 | init_psymbol_list (objfile, 1024); | |
2568 | } | |
2569 | ||
d146bf1e | 2570 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 2571 | } |
c906108c | 2572 | |
45452591 DE |
2573 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
2574 | ||
2575 | static inline int | |
2576 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
2577 | { | |
2578 | unsigned int bottom = cu_header->offset; | |
2579 | unsigned int top = (cu_header->offset | |
2580 | + cu_header->length | |
2581 | + cu_header->initial_length_size); | |
9a619af0 | 2582 | |
45452591 DE |
2583 | return (offset >= bottom && offset < top); |
2584 | } | |
2585 | ||
93311388 DE |
2586 | /* Read in the comp unit header information from the debug_info at info_ptr. |
2587 | NOTE: This leaves members offset, first_die_offset to be filled in | |
2588 | by the caller. */ | |
107d2387 | 2589 | |
fe1b8b76 | 2590 | static gdb_byte * |
107d2387 | 2591 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 2592 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
2593 | { |
2594 | int signed_addr; | |
891d2f0b | 2595 | unsigned int bytes_read; |
c764a876 DE |
2596 | |
2597 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
2598 | cu_header->initial_length_size = bytes_read; | |
2599 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 2600 | info_ptr += bytes_read; |
107d2387 AC |
2601 | cu_header->version = read_2_bytes (abfd, info_ptr); |
2602 | info_ptr += 2; | |
613e1657 | 2603 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
c764a876 | 2604 | &bytes_read); |
613e1657 | 2605 | info_ptr += bytes_read; |
107d2387 AC |
2606 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
2607 | info_ptr += 1; | |
2608 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
2609 | if (signed_addr < 0) | |
8e65ff28 | 2610 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2611 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 2612 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 2613 | |
107d2387 AC |
2614 | return info_ptr; |
2615 | } | |
2616 | ||
fe1b8b76 JB |
2617 | static gdb_byte * |
2618 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
93311388 | 2619 | gdb_byte *buffer, unsigned int buffer_size, |
72bf9492 DJ |
2620 | bfd *abfd) |
2621 | { | |
fe1b8b76 | 2622 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
2623 | |
2624 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
2625 | ||
2dc7f7b3 | 2626 | if (header->version != 2 && header->version != 3 && header->version != 4) |
8a3fe4f8 | 2627 | error (_("Dwarf Error: wrong version in compilation unit header " |
2dc7f7b3 TT |
2628 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, |
2629 | bfd_get_filename (abfd)); | |
72bf9492 | 2630 | |
dce234bc | 2631 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev.size) |
8a3fe4f8 AC |
2632 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
2633 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 | 2634 | (long) header->abbrev_offset, |
93311388 | 2635 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2636 | bfd_get_filename (abfd)); |
2637 | ||
2638 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
93311388 | 2639 | > buffer + buffer_size) |
8a3fe4f8 AC |
2640 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
2641 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 | 2642 | (long) header->length, |
93311388 | 2643 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2644 | bfd_get_filename (abfd)); |
2645 | ||
2646 | return info_ptr; | |
2647 | } | |
2648 | ||
348e048f DE |
2649 | /* Read in the types comp unit header information from .debug_types entry at |
2650 | types_ptr. The result is a pointer to one past the end of the header. */ | |
2651 | ||
2652 | static gdb_byte * | |
2653 | read_type_comp_unit_head (struct comp_unit_head *cu_header, | |
2654 | ULONGEST *signature, | |
2655 | gdb_byte *types_ptr, bfd *abfd) | |
2656 | { | |
348e048f DE |
2657 | gdb_byte *initial_types_ptr = types_ptr; |
2658 | ||
6e70227d | 2659 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
fa238c03 | 2660 | &dwarf2_per_objfile->types); |
348e048f DE |
2661 | cu_header->offset = types_ptr - dwarf2_per_objfile->types.buffer; |
2662 | ||
2663 | types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd); | |
2664 | ||
2665 | *signature = read_8_bytes (abfd, types_ptr); | |
2666 | types_ptr += 8; | |
2667 | types_ptr += cu_header->offset_size; | |
2668 | cu_header->first_die_offset = types_ptr - initial_types_ptr; | |
2669 | ||
2670 | return types_ptr; | |
2671 | } | |
2672 | ||
aaa75496 JB |
2673 | /* Allocate a new partial symtab for file named NAME and mark this new |
2674 | partial symtab as being an include of PST. */ | |
2675 | ||
2676 | static void | |
2677 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
2678 | struct objfile *objfile) | |
2679 | { | |
2680 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
2681 | ||
2682 | subpst->section_offsets = pst->section_offsets; | |
2683 | subpst->textlow = 0; | |
2684 | subpst->texthigh = 0; | |
2685 | ||
2686 | subpst->dependencies = (struct partial_symtab **) | |
2687 | obstack_alloc (&objfile->objfile_obstack, | |
2688 | sizeof (struct partial_symtab *)); | |
2689 | subpst->dependencies[0] = pst; | |
2690 | subpst->number_of_dependencies = 1; | |
2691 | ||
2692 | subpst->globals_offset = 0; | |
2693 | subpst->n_global_syms = 0; | |
2694 | subpst->statics_offset = 0; | |
2695 | subpst->n_static_syms = 0; | |
2696 | subpst->symtab = NULL; | |
2697 | subpst->read_symtab = pst->read_symtab; | |
2698 | subpst->readin = 0; | |
2699 | ||
2700 | /* No private part is necessary for include psymtabs. This property | |
2701 | can be used to differentiate between such include psymtabs and | |
10b3939b | 2702 | the regular ones. */ |
58a9656e | 2703 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
2704 | } |
2705 | ||
2706 | /* Read the Line Number Program data and extract the list of files | |
2707 | included by the source file represented by PST. Build an include | |
d85a05f0 | 2708 | partial symtab for each of these included files. */ |
aaa75496 JB |
2709 | |
2710 | static void | |
2711 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
d85a05f0 | 2712 | struct die_info *die, |
aaa75496 JB |
2713 | struct partial_symtab *pst) |
2714 | { | |
2715 | struct objfile *objfile = cu->objfile; | |
2716 | bfd *abfd = objfile->obfd; | |
d85a05f0 DJ |
2717 | struct line_header *lh = NULL; |
2718 | struct attribute *attr; | |
aaa75496 | 2719 | |
d85a05f0 DJ |
2720 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
2721 | if (attr) | |
2722 | { | |
2723 | unsigned int line_offset = DW_UNSND (attr); | |
9a619af0 | 2724 | |
d85a05f0 DJ |
2725 | lh = dwarf_decode_line_header (line_offset, abfd, cu); |
2726 | } | |
aaa75496 JB |
2727 | if (lh == NULL) |
2728 | return; /* No linetable, so no includes. */ | |
2729 | ||
2730 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
2731 | ||
2732 | free_line_header (lh); | |
2733 | } | |
2734 | ||
348e048f DE |
2735 | static hashval_t |
2736 | hash_type_signature (const void *item) | |
2737 | { | |
2738 | const struct signatured_type *type_sig = item; | |
9a619af0 | 2739 | |
348e048f DE |
2740 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
2741 | return type_sig->signature; | |
2742 | } | |
2743 | ||
2744 | static int | |
2745 | eq_type_signature (const void *item_lhs, const void *item_rhs) | |
2746 | { | |
2747 | const struct signatured_type *lhs = item_lhs; | |
2748 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 2749 | |
348e048f DE |
2750 | return lhs->signature == rhs->signature; |
2751 | } | |
2752 | ||
1fd400ff TT |
2753 | /* Allocate a hash table for signatured types. */ |
2754 | ||
2755 | static htab_t | |
2756 | allocate_signatured_type_hash_table (struct objfile *objfile) | |
2757 | { | |
2758 | return htab_create_alloc_ex (41, | |
2759 | hash_type_signature, | |
2760 | eq_type_signature, | |
2761 | NULL, | |
2762 | &objfile->objfile_obstack, | |
2763 | hashtab_obstack_allocate, | |
2764 | dummy_obstack_deallocate); | |
2765 | } | |
2766 | ||
2767 | /* A helper function to add a signatured type CU to a list. */ | |
2768 | ||
2769 | static int | |
2770 | add_signatured_type_cu_to_list (void **slot, void *datum) | |
2771 | { | |
2772 | struct signatured_type *sigt = *slot; | |
2773 | struct dwarf2_per_cu_data ***datap = datum; | |
2774 | ||
2775 | **datap = &sigt->per_cu; | |
2776 | ++*datap; | |
2777 | ||
2778 | return 1; | |
2779 | } | |
2780 | ||
348e048f DE |
2781 | /* Create the hash table of all entries in the .debug_types section. |
2782 | The result is zero if there is an error (e.g. missing .debug_types section), | |
2783 | otherwise non-zero. */ | |
2784 | ||
2785 | static int | |
2786 | create_debug_types_hash_table (struct objfile *objfile) | |
2787 | { | |
be391dca | 2788 | gdb_byte *info_ptr; |
348e048f | 2789 | htab_t types_htab; |
1fd400ff | 2790 | struct dwarf2_per_cu_data **iter; |
348e048f | 2791 | |
be391dca TT |
2792 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
2793 | info_ptr = dwarf2_per_objfile->types.buffer; | |
2794 | ||
348e048f DE |
2795 | if (info_ptr == NULL) |
2796 | { | |
2797 | dwarf2_per_objfile->signatured_types = NULL; | |
2798 | return 0; | |
2799 | } | |
2800 | ||
1fd400ff | 2801 | types_htab = allocate_signatured_type_hash_table (objfile); |
348e048f DE |
2802 | |
2803 | if (dwarf2_die_debug) | |
2804 | fprintf_unfiltered (gdb_stdlog, "Signatured types:\n"); | |
2805 | ||
2806 | while (info_ptr < dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
2807 | { | |
2808 | unsigned int offset; | |
2809 | unsigned int offset_size; | |
2810 | unsigned int type_offset; | |
2811 | unsigned int length, initial_length_size; | |
2812 | unsigned short version; | |
2813 | ULONGEST signature; | |
2814 | struct signatured_type *type_sig; | |
2815 | void **slot; | |
2816 | gdb_byte *ptr = info_ptr; | |
2817 | ||
2818 | offset = ptr - dwarf2_per_objfile->types.buffer; | |
2819 | ||
2820 | /* We need to read the type's signature in order to build the hash | |
2821 | table, but we don't need to read anything else just yet. */ | |
2822 | ||
2823 | /* Sanity check to ensure entire cu is present. */ | |
2824 | length = read_initial_length (objfile->obfd, ptr, &initial_length_size); | |
2825 | if (ptr + length + initial_length_size | |
2826 | > dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
2827 | { | |
2828 | complaint (&symfile_complaints, | |
2829 | _("debug type entry runs off end of `.debug_types' section, ignored")); | |
2830 | break; | |
2831 | } | |
2832 | ||
2833 | offset_size = initial_length_size == 4 ? 4 : 8; | |
2834 | ptr += initial_length_size; | |
2835 | version = bfd_get_16 (objfile->obfd, ptr); | |
2836 | ptr += 2; | |
2837 | ptr += offset_size; /* abbrev offset */ | |
2838 | ptr += 1; /* address size */ | |
2839 | signature = bfd_get_64 (objfile->obfd, ptr); | |
2840 | ptr += 8; | |
2841 | type_offset = read_offset_1 (objfile->obfd, ptr, offset_size); | |
2842 | ||
2843 | type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig)); | |
2844 | memset (type_sig, 0, sizeof (*type_sig)); | |
2845 | type_sig->signature = signature; | |
2846 | type_sig->offset = offset; | |
2847 | type_sig->type_offset = type_offset; | |
ca1f3406 | 2848 | type_sig->per_cu.objfile = objfile; |
1fd400ff | 2849 | type_sig->per_cu.from_debug_types = 1; |
348e048f DE |
2850 | |
2851 | slot = htab_find_slot (types_htab, type_sig, INSERT); | |
2852 | gdb_assert (slot != NULL); | |
2853 | *slot = type_sig; | |
2854 | ||
2855 | if (dwarf2_die_debug) | |
2856 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
2857 | offset, phex (signature, sizeof (signature))); | |
2858 | ||
2859 | info_ptr = info_ptr + initial_length_size + length; | |
2860 | } | |
2861 | ||
2862 | dwarf2_per_objfile->signatured_types = types_htab; | |
2863 | ||
1fd400ff TT |
2864 | dwarf2_per_objfile->n_type_comp_units = htab_elements (types_htab); |
2865 | dwarf2_per_objfile->type_comp_units | |
2866 | = obstack_alloc (&objfile->objfile_obstack, | |
2867 | dwarf2_per_objfile->n_type_comp_units | |
2868 | * sizeof (struct dwarf2_per_cu_data *)); | |
2869 | iter = &dwarf2_per_objfile->type_comp_units[0]; | |
2870 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_list, &iter); | |
2871 | gdb_assert (iter - &dwarf2_per_objfile->type_comp_units[0] | |
2872 | == dwarf2_per_objfile->n_type_comp_units); | |
2873 | ||
348e048f DE |
2874 | return 1; |
2875 | } | |
2876 | ||
2877 | /* Lookup a signature based type. | |
2878 | Returns NULL if SIG is not present in the table. */ | |
2879 | ||
2880 | static struct signatured_type * | |
2881 | lookup_signatured_type (struct objfile *objfile, ULONGEST sig) | |
2882 | { | |
2883 | struct signatured_type find_entry, *entry; | |
2884 | ||
2885 | if (dwarf2_per_objfile->signatured_types == NULL) | |
2886 | { | |
2887 | complaint (&symfile_complaints, | |
2888 | _("missing `.debug_types' section for DW_FORM_sig8 die")); | |
2889 | return 0; | |
2890 | } | |
2891 | ||
2892 | find_entry.signature = sig; | |
2893 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
2894 | return entry; | |
2895 | } | |
2896 | ||
d85a05f0 DJ |
2897 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
2898 | ||
2899 | static void | |
2900 | init_cu_die_reader (struct die_reader_specs *reader, | |
2901 | struct dwarf2_cu *cu) | |
2902 | { | |
2903 | reader->abfd = cu->objfile->obfd; | |
2904 | reader->cu = cu; | |
2905 | if (cu->per_cu->from_debug_types) | |
be391dca TT |
2906 | { |
2907 | gdb_assert (dwarf2_per_objfile->types.readin); | |
2908 | reader->buffer = dwarf2_per_objfile->types.buffer; | |
2909 | } | |
d85a05f0 | 2910 | else |
be391dca TT |
2911 | { |
2912 | gdb_assert (dwarf2_per_objfile->info.readin); | |
2913 | reader->buffer = dwarf2_per_objfile->info.buffer; | |
2914 | } | |
d85a05f0 DJ |
2915 | } |
2916 | ||
2917 | /* Find the base address of the compilation unit for range lists and | |
2918 | location lists. It will normally be specified by DW_AT_low_pc. | |
2919 | In DWARF-3 draft 4, the base address could be overridden by | |
2920 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2921 | compilation units with discontinuous ranges. */ | |
2922 | ||
2923 | static void | |
2924 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
2925 | { | |
2926 | struct attribute *attr; | |
2927 | ||
2928 | cu->base_known = 0; | |
2929 | cu->base_address = 0; | |
2930 | ||
2931 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
2932 | if (attr) | |
2933 | { | |
2934 | cu->base_address = DW_ADDR (attr); | |
2935 | cu->base_known = 1; | |
2936 | } | |
2937 | else | |
2938 | { | |
2939 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
2940 | if (attr) | |
2941 | { | |
2942 | cu->base_address = DW_ADDR (attr); | |
2943 | cu->base_known = 1; | |
2944 | } | |
2945 | } | |
2946 | } | |
2947 | ||
348e048f DE |
2948 | /* Subroutine of process_type_comp_unit and dwarf2_build_psymtabs_hard |
2949 | to combine the common parts. | |
93311388 | 2950 | Process a compilation unit for a psymtab. |
348e048f DE |
2951 | BUFFER is a pointer to the beginning of the dwarf section buffer, |
2952 | either .debug_info or debug_types. | |
93311388 DE |
2953 | INFO_PTR is a pointer to the start of the CU. |
2954 | Returns a pointer to the next CU. */ | |
aaa75496 | 2955 | |
93311388 DE |
2956 | static gdb_byte * |
2957 | process_psymtab_comp_unit (struct objfile *objfile, | |
2958 | struct dwarf2_per_cu_data *this_cu, | |
2959 | gdb_byte *buffer, gdb_byte *info_ptr, | |
2960 | unsigned int buffer_size) | |
c906108c | 2961 | { |
c906108c | 2962 | bfd *abfd = objfile->obfd; |
93311388 | 2963 | gdb_byte *beg_of_comp_unit = info_ptr; |
d85a05f0 | 2964 | struct die_info *comp_unit_die; |
c906108c | 2965 | struct partial_symtab *pst; |
5734ee8b | 2966 | CORE_ADDR baseaddr; |
93311388 DE |
2967 | struct cleanup *back_to_inner; |
2968 | struct dwarf2_cu cu; | |
d85a05f0 DJ |
2969 | int has_children, has_pc_info; |
2970 | struct attribute *attr; | |
d85a05f0 DJ |
2971 | CORE_ADDR best_lowpc = 0, best_highpc = 0; |
2972 | struct die_reader_specs reader_specs; | |
c906108c | 2973 | |
93311388 DE |
2974 | memset (&cu, 0, sizeof (cu)); |
2975 | cu.objfile = objfile; | |
2976 | obstack_init (&cu.comp_unit_obstack); | |
c906108c | 2977 | |
93311388 | 2978 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); |
ae038cb0 | 2979 | |
93311388 DE |
2980 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, |
2981 | buffer, buffer_size, | |
2982 | abfd); | |
10b3939b | 2983 | |
93311388 DE |
2984 | /* Complete the cu_header. */ |
2985 | cu.header.offset = beg_of_comp_unit - buffer; | |
2986 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
ff013f42 | 2987 | |
93311388 | 2988 | cu.list_in_scope = &file_symbols; |
af703f96 | 2989 | |
328c9494 DJ |
2990 | /* If this compilation unit was already read in, free the |
2991 | cached copy in order to read it in again. This is | |
2992 | necessary because we skipped some symbols when we first | |
2993 | read in the compilation unit (see load_partial_dies). | |
2994 | This problem could be avoided, but the benefit is | |
2995 | unclear. */ | |
2996 | if (this_cu->cu != NULL) | |
2997 | free_one_cached_comp_unit (this_cu->cu); | |
2998 | ||
2999 | /* Note that this is a pointer to our stack frame, being | |
3000 | added to a global data structure. It will be cleaned up | |
3001 | in free_stack_comp_unit when we finish with this | |
3002 | compilation unit. */ | |
3003 | this_cu->cu = &cu; | |
d85a05f0 DJ |
3004 | cu.per_cu = this_cu; |
3005 | ||
93311388 DE |
3006 | /* Read the abbrevs for this compilation unit into a table. */ |
3007 | dwarf2_read_abbrevs (abfd, &cu); | |
3008 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
af703f96 | 3009 | |
93311388 | 3010 | /* Read the compilation unit die. */ |
348e048f DE |
3011 | if (this_cu->from_debug_types) |
3012 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
d85a05f0 DJ |
3013 | init_cu_die_reader (&reader_specs, &cu); |
3014 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3015 | &has_children); | |
93311388 | 3016 | |
348e048f DE |
3017 | if (this_cu->from_debug_types) |
3018 | { | |
3019 | /* offset,length haven't been set yet for type units. */ | |
3020 | this_cu->offset = cu.header.offset; | |
3021 | this_cu->length = cu.header.length + cu.header.initial_length_size; | |
3022 | } | |
d85a05f0 | 3023 | else if (comp_unit_die->tag == DW_TAG_partial_unit) |
c906108c | 3024 | { |
93311388 DE |
3025 | info_ptr = (beg_of_comp_unit + cu.header.length |
3026 | + cu.header.initial_length_size); | |
3027 | do_cleanups (back_to_inner); | |
3028 | return info_ptr; | |
3029 | } | |
72bf9492 | 3030 | |
93311388 | 3031 | /* Set the language we're debugging. */ |
d85a05f0 DJ |
3032 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, &cu); |
3033 | if (attr) | |
3034 | set_cu_language (DW_UNSND (attr), &cu); | |
3035 | else | |
3036 | set_cu_language (language_minimal, &cu); | |
c906108c | 3037 | |
93311388 | 3038 | /* Allocate a new partial symbol table structure. */ |
d85a05f0 | 3039 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, &cu); |
93311388 | 3040 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
d85a05f0 | 3041 | (attr != NULL) ? DW_STRING (attr) : "", |
93311388 DE |
3042 | /* TEXTLOW and TEXTHIGH are set below. */ |
3043 | 0, | |
3044 | objfile->global_psymbols.next, | |
3045 | objfile->static_psymbols.next); | |
72bf9492 | 3046 | |
d85a05f0 DJ |
3047 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, &cu); |
3048 | if (attr != NULL) | |
3049 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 3050 | |
e38df1d0 | 3051 | pst->read_symtab_private = this_cu; |
72bf9492 | 3052 | |
93311388 | 3053 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 3054 | |
93311388 DE |
3055 | /* Store the function that reads in the rest of the symbol table */ |
3056 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
57349743 | 3057 | |
9291a0cd | 3058 | this_cu->v.psymtab = pst; |
c906108c | 3059 | |
d85a05f0 DJ |
3060 | dwarf2_find_base_address (comp_unit_die, &cu); |
3061 | ||
93311388 DE |
3062 | /* Possibly set the default values of LOWPC and HIGHPC from |
3063 | `DW_AT_ranges'. */ | |
d85a05f0 DJ |
3064 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
3065 | &best_highpc, &cu, pst); | |
3066 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
93311388 DE |
3067 | /* Store the contiguous range if it is not empty; it can be empty for |
3068 | CUs with no code. */ | |
3069 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
3070 | best_lowpc + baseaddr, |
3071 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
3072 | |
3073 | /* Check if comp unit has_children. | |
3074 | If so, read the rest of the partial symbols from this comp unit. | |
3075 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 3076 | if (has_children) |
93311388 DE |
3077 | { |
3078 | struct partial_die_info *first_die; | |
3079 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 3080 | |
93311388 DE |
3081 | lowpc = ((CORE_ADDR) -1); |
3082 | highpc = ((CORE_ADDR) 0); | |
c906108c | 3083 | |
93311388 | 3084 | first_die = load_partial_dies (abfd, buffer, info_ptr, 1, &cu); |
c906108c | 3085 | |
93311388 | 3086 | scan_partial_symbols (first_die, &lowpc, &highpc, |
d85a05f0 | 3087 | ! has_pc_info, &cu); |
57c22c6c | 3088 | |
93311388 DE |
3089 | /* If we didn't find a lowpc, set it to highpc to avoid |
3090 | complaints from `maint check'. */ | |
3091 | if (lowpc == ((CORE_ADDR) -1)) | |
3092 | lowpc = highpc; | |
10b3939b | 3093 | |
93311388 DE |
3094 | /* If the compilation unit didn't have an explicit address range, |
3095 | then use the information extracted from its child dies. */ | |
d85a05f0 | 3096 | if (! has_pc_info) |
93311388 | 3097 | { |
d85a05f0 DJ |
3098 | best_lowpc = lowpc; |
3099 | best_highpc = highpc; | |
93311388 DE |
3100 | } |
3101 | } | |
d85a05f0 DJ |
3102 | pst->textlow = best_lowpc + baseaddr; |
3103 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 3104 | |
93311388 DE |
3105 | pst->n_global_syms = objfile->global_psymbols.next - |
3106 | (objfile->global_psymbols.list + pst->globals_offset); | |
3107 | pst->n_static_syms = objfile->static_psymbols.next - | |
3108 | (objfile->static_psymbols.list + pst->statics_offset); | |
3109 | sort_pst_symbols (pst); | |
c906108c | 3110 | |
93311388 DE |
3111 | info_ptr = (beg_of_comp_unit + cu.header.length |
3112 | + cu.header.initial_length_size); | |
ae038cb0 | 3113 | |
348e048f DE |
3114 | if (this_cu->from_debug_types) |
3115 | { | |
3116 | /* It's not clear we want to do anything with stmt lists here. | |
3117 | Waiting to see what gcc ultimately does. */ | |
3118 | } | |
d85a05f0 | 3119 | else |
93311388 DE |
3120 | { |
3121 | /* Get the list of files included in the current compilation unit, | |
3122 | and build a psymtab for each of them. */ | |
d85a05f0 | 3123 | dwarf2_build_include_psymtabs (&cu, comp_unit_die, pst); |
93311388 | 3124 | } |
ae038cb0 | 3125 | |
93311388 | 3126 | do_cleanups (back_to_inner); |
ae038cb0 | 3127 | |
93311388 DE |
3128 | return info_ptr; |
3129 | } | |
ff013f42 | 3130 | |
348e048f DE |
3131 | /* Traversal function for htab_traverse_noresize. |
3132 | Process one .debug_types comp-unit. */ | |
3133 | ||
3134 | static int | |
3135 | process_type_comp_unit (void **slot, void *info) | |
3136 | { | |
3137 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
3138 | struct objfile *objfile = (struct objfile *) info; | |
3139 | struct dwarf2_per_cu_data *this_cu; | |
3140 | ||
3141 | this_cu = &entry->per_cu; | |
348e048f | 3142 | |
be391dca | 3143 | gdb_assert (dwarf2_per_objfile->types.readin); |
348e048f DE |
3144 | process_psymtab_comp_unit (objfile, this_cu, |
3145 | dwarf2_per_objfile->types.buffer, | |
3146 | dwarf2_per_objfile->types.buffer + entry->offset, | |
3147 | dwarf2_per_objfile->types.size); | |
3148 | ||
3149 | return 1; | |
3150 | } | |
3151 | ||
3152 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
3153 | Build partial symbol tables for the .debug_types comp-units. */ | |
3154 | ||
3155 | static void | |
3156 | build_type_psymtabs (struct objfile *objfile) | |
3157 | { | |
3158 | if (! create_debug_types_hash_table (objfile)) | |
3159 | return; | |
3160 | ||
3161 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
3162 | process_type_comp_unit, objfile); | |
3163 | } | |
3164 | ||
60606b2c TT |
3165 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
3166 | ||
3167 | static void | |
3168 | psymtabs_addrmap_cleanup (void *o) | |
3169 | { | |
3170 | struct objfile *objfile = o; | |
ec61707d | 3171 | |
60606b2c TT |
3172 | objfile->psymtabs_addrmap = NULL; |
3173 | } | |
3174 | ||
93311388 DE |
3175 | /* Build the partial symbol table by doing a quick pass through the |
3176 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 3177 | |
93311388 | 3178 | static void |
c67a9c90 | 3179 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 3180 | { |
93311388 | 3181 | gdb_byte *info_ptr; |
60606b2c TT |
3182 | struct cleanup *back_to, *addrmap_cleanup; |
3183 | struct obstack temp_obstack; | |
93311388 | 3184 | |
98bfdba5 PA |
3185 | dwarf2_per_objfile->reading_partial_symbols = 1; |
3186 | ||
be391dca | 3187 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
93311388 | 3188 | info_ptr = dwarf2_per_objfile->info.buffer; |
91c24f0a | 3189 | |
93311388 DE |
3190 | /* Any cached compilation units will be linked by the per-objfile |
3191 | read_in_chain. Make sure to free them when we're done. */ | |
3192 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 3193 | |
348e048f DE |
3194 | build_type_psymtabs (objfile); |
3195 | ||
93311388 | 3196 | create_all_comp_units (objfile); |
c906108c | 3197 | |
60606b2c TT |
3198 | /* Create a temporary address map on a temporary obstack. We later |
3199 | copy this to the final obstack. */ | |
3200 | obstack_init (&temp_obstack); | |
3201 | make_cleanup_obstack_free (&temp_obstack); | |
3202 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
3203 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 3204 | |
93311388 DE |
3205 | /* Since the objects we're extracting from .debug_info vary in |
3206 | length, only the individual functions to extract them (like | |
3207 | read_comp_unit_head and load_partial_die) can really know whether | |
3208 | the buffer is large enough to hold another complete object. | |
c906108c | 3209 | |
93311388 DE |
3210 | At the moment, they don't actually check that. If .debug_info |
3211 | holds just one extra byte after the last compilation unit's dies, | |
3212 | then read_comp_unit_head will happily read off the end of the | |
3213 | buffer. read_partial_die is similarly casual. Those functions | |
3214 | should be fixed. | |
c906108c | 3215 | |
93311388 DE |
3216 | For this loop condition, simply checking whether there's any data |
3217 | left at all should be sufficient. */ | |
c906108c | 3218 | |
93311388 DE |
3219 | while (info_ptr < (dwarf2_per_objfile->info.buffer |
3220 | + dwarf2_per_objfile->info.size)) | |
3221 | { | |
3222 | struct dwarf2_per_cu_data *this_cu; | |
dd373385 | 3223 | |
93311388 DE |
3224 | this_cu = dwarf2_find_comp_unit (info_ptr - dwarf2_per_objfile->info.buffer, |
3225 | objfile); | |
aaa75496 | 3226 | |
93311388 DE |
3227 | info_ptr = process_psymtab_comp_unit (objfile, this_cu, |
3228 | dwarf2_per_objfile->info.buffer, | |
3229 | info_ptr, | |
3230 | dwarf2_per_objfile->info.size); | |
c906108c | 3231 | } |
ff013f42 JK |
3232 | |
3233 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
3234 | &objfile->objfile_obstack); | |
60606b2c | 3235 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 3236 | |
ae038cb0 DJ |
3237 | do_cleanups (back_to); |
3238 | } | |
3239 | ||
93311388 | 3240 | /* Load the partial DIEs for a secondary CU into memory. */ |
ae038cb0 DJ |
3241 | |
3242 | static void | |
93311388 DE |
3243 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu, |
3244 | struct objfile *objfile) | |
ae038cb0 DJ |
3245 | { |
3246 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 3247 | gdb_byte *info_ptr, *beg_of_comp_unit; |
d85a05f0 | 3248 | struct die_info *comp_unit_die; |
ae038cb0 | 3249 | struct dwarf2_cu *cu; |
1d9ec526 | 3250 | struct cleanup *free_abbrevs_cleanup, *free_cu_cleanup = NULL; |
d85a05f0 DJ |
3251 | struct attribute *attr; |
3252 | int has_children; | |
3253 | struct die_reader_specs reader_specs; | |
98bfdba5 | 3254 | int read_cu = 0; |
ae038cb0 | 3255 | |
348e048f DE |
3256 | gdb_assert (! this_cu->from_debug_types); |
3257 | ||
be391dca | 3258 | gdb_assert (dwarf2_per_objfile->info.readin); |
dce234bc | 3259 | info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset; |
ae038cb0 DJ |
3260 | beg_of_comp_unit = info_ptr; |
3261 | ||
98bfdba5 PA |
3262 | if (this_cu->cu == NULL) |
3263 | { | |
3264 | cu = alloc_one_comp_unit (objfile); | |
ae038cb0 | 3265 | |
98bfdba5 | 3266 | read_cu = 1; |
ae038cb0 | 3267 | |
98bfdba5 PA |
3268 | /* If an error occurs while loading, release our storage. */ |
3269 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
328c9494 | 3270 | |
98bfdba5 PA |
3271 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, |
3272 | dwarf2_per_objfile->info.buffer, | |
3273 | dwarf2_per_objfile->info.size, | |
3274 | abfd); | |
ae038cb0 | 3275 | |
98bfdba5 PA |
3276 | /* Complete the cu_header. */ |
3277 | cu->header.offset = this_cu->offset; | |
3278 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
3279 | ||
3280 | /* Link this compilation unit into the compilation unit tree. */ | |
3281 | this_cu->cu = cu; | |
3282 | cu->per_cu = this_cu; | |
3283 | cu->type_hash = this_cu->type_hash; | |
3284 | ||
3285 | /* Link this CU into read_in_chain. */ | |
3286 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
3287 | dwarf2_per_objfile->read_in_chain = this_cu; | |
3288 | } | |
3289 | else | |
3290 | { | |
3291 | cu = this_cu->cu; | |
3292 | info_ptr += cu->header.first_die_offset; | |
3293 | } | |
ae038cb0 DJ |
3294 | |
3295 | /* Read the abbrevs for this compilation unit into a table. */ | |
98bfdba5 | 3296 | gdb_assert (cu->dwarf2_abbrevs == NULL); |
ae038cb0 | 3297 | dwarf2_read_abbrevs (abfd, cu); |
98bfdba5 | 3298 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); |
ae038cb0 DJ |
3299 | |
3300 | /* Read the compilation unit die. */ | |
d85a05f0 DJ |
3301 | init_cu_die_reader (&reader_specs, cu); |
3302 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3303 | &has_children); | |
ae038cb0 DJ |
3304 | |
3305 | /* Set the language we're debugging. */ | |
d85a05f0 DJ |
3306 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); |
3307 | if (attr) | |
3308 | set_cu_language (DW_UNSND (attr), cu); | |
3309 | else | |
3310 | set_cu_language (language_minimal, cu); | |
ae038cb0 | 3311 | |
ae038cb0 DJ |
3312 | /* Check if comp unit has_children. |
3313 | If so, read the rest of the partial symbols from this comp unit. | |
3314 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 3315 | if (has_children) |
93311388 | 3316 | load_partial_dies (abfd, dwarf2_per_objfile->info.buffer, info_ptr, 0, cu); |
ae038cb0 | 3317 | |
98bfdba5 PA |
3318 | do_cleanups (free_abbrevs_cleanup); |
3319 | ||
3320 | if (read_cu) | |
3321 | { | |
3322 | /* We've successfully allocated this compilation unit. Let our | |
3323 | caller clean it up when finished with it. */ | |
3324 | discard_cleanups (free_cu_cleanup); | |
3325 | } | |
ae038cb0 DJ |
3326 | } |
3327 | ||
3328 | /* Create a list of all compilation units in OBJFILE. We do this only | |
3329 | if an inter-comp-unit reference is found; presumably if there is one, | |
3330 | there will be many, and one will occur early in the .debug_info section. | |
3331 | So there's no point in building this list incrementally. */ | |
3332 | ||
3333 | static void | |
3334 | create_all_comp_units (struct objfile *objfile) | |
3335 | { | |
3336 | int n_allocated; | |
3337 | int n_comp_units; | |
3338 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
3339 | gdb_byte *info_ptr; |
3340 | ||
3341 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
3342 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
3343 | |
3344 | n_comp_units = 0; | |
3345 | n_allocated = 10; | |
3346 | all_comp_units = xmalloc (n_allocated | |
3347 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 3348 | |
dce234bc | 3349 | while (info_ptr < dwarf2_per_objfile->info.buffer + dwarf2_per_objfile->info.size) |
ae038cb0 | 3350 | { |
c764a876 | 3351 | unsigned int length, initial_length_size; |
ae038cb0 | 3352 | struct dwarf2_per_cu_data *this_cu; |
c764a876 | 3353 | unsigned int offset; |
ae038cb0 | 3354 | |
dce234bc | 3355 | offset = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
3356 | |
3357 | /* Read just enough information to find out where the next | |
3358 | compilation unit is. */ | |
c764a876 DE |
3359 | length = read_initial_length (objfile->obfd, info_ptr, |
3360 | &initial_length_size); | |
ae038cb0 DJ |
3361 | |
3362 | /* Save the compilation unit for later lookup. */ | |
3363 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
3364 | sizeof (struct dwarf2_per_cu_data)); | |
3365 | memset (this_cu, 0, sizeof (*this_cu)); | |
3366 | this_cu->offset = offset; | |
c764a876 | 3367 | this_cu->length = length + initial_length_size; |
9291a0cd | 3368 | this_cu->objfile = objfile; |
ae038cb0 DJ |
3369 | |
3370 | if (n_comp_units == n_allocated) | |
3371 | { | |
3372 | n_allocated *= 2; | |
3373 | all_comp_units = xrealloc (all_comp_units, | |
3374 | n_allocated | |
3375 | * sizeof (struct dwarf2_per_cu_data *)); | |
3376 | } | |
3377 | all_comp_units[n_comp_units++] = this_cu; | |
3378 | ||
3379 | info_ptr = info_ptr + this_cu->length; | |
3380 | } | |
3381 | ||
3382 | dwarf2_per_objfile->all_comp_units | |
3383 | = obstack_alloc (&objfile->objfile_obstack, | |
3384 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3385 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
3386 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3387 | xfree (all_comp_units); | |
3388 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
3389 | } |
3390 | ||
5734ee8b DJ |
3391 | /* Process all loaded DIEs for compilation unit CU, starting at |
3392 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
3393 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
3394 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
3395 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
3396 | and record the covered ranges in the addrmap. */ | |
c906108c | 3397 | |
72bf9492 DJ |
3398 | static void |
3399 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 3400 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 3401 | { |
72bf9492 | 3402 | struct partial_die_info *pdi; |
c906108c | 3403 | |
91c24f0a DC |
3404 | /* Now, march along the PDI's, descending into ones which have |
3405 | interesting children but skipping the children of the other ones, | |
3406 | until we reach the end of the compilation unit. */ | |
c906108c | 3407 | |
72bf9492 | 3408 | pdi = first_die; |
91c24f0a | 3409 | |
72bf9492 DJ |
3410 | while (pdi != NULL) |
3411 | { | |
3412 | fixup_partial_die (pdi, cu); | |
c906108c | 3413 | |
f55ee35c | 3414 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
3415 | children, so we need to look at them. Ditto for anonymous |
3416 | enums. */ | |
933c6fe4 | 3417 | |
72bf9492 | 3418 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
f55ee35c | 3419 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type) |
c906108c | 3420 | { |
72bf9492 | 3421 | switch (pdi->tag) |
c906108c SS |
3422 | { |
3423 | case DW_TAG_subprogram: | |
5734ee8b | 3424 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c SS |
3425 | break; |
3426 | case DW_TAG_variable: | |
3427 | case DW_TAG_typedef: | |
91c24f0a | 3428 | case DW_TAG_union_type: |
72bf9492 | 3429 | if (!pdi->is_declaration) |
63d06c5c | 3430 | { |
72bf9492 | 3431 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
3432 | } |
3433 | break; | |
c906108c | 3434 | case DW_TAG_class_type: |
680b30c7 | 3435 | case DW_TAG_interface_type: |
c906108c | 3436 | case DW_TAG_structure_type: |
72bf9492 | 3437 | if (!pdi->is_declaration) |
c906108c | 3438 | { |
72bf9492 | 3439 | add_partial_symbol (pdi, cu); |
c906108c SS |
3440 | } |
3441 | break; | |
91c24f0a | 3442 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
3443 | if (!pdi->is_declaration) |
3444 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
3445 | break; |
3446 | case DW_TAG_base_type: | |
a02abb62 | 3447 | case DW_TAG_subrange_type: |
c906108c | 3448 | /* File scope base type definitions are added to the partial |
c5aa993b | 3449 | symbol table. */ |
72bf9492 | 3450 | add_partial_symbol (pdi, cu); |
c906108c | 3451 | break; |
d9fa45fe | 3452 | case DW_TAG_namespace: |
5734ee8b | 3453 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 3454 | break; |
5d7cb8df JK |
3455 | case DW_TAG_module: |
3456 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
3457 | break; | |
c906108c SS |
3458 | default: |
3459 | break; | |
3460 | } | |
3461 | } | |
3462 | ||
72bf9492 DJ |
3463 | /* If the die has a sibling, skip to the sibling. */ |
3464 | ||
3465 | pdi = pdi->die_sibling; | |
3466 | } | |
3467 | } | |
3468 | ||
3469 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 3470 | |
72bf9492 | 3471 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
3472 | name is concatenated with "::" and the partial DIE's name. For |
3473 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
3474 | Enumerators are an exception; they use the scope of their parent |
3475 | enumeration type, i.e. the name of the enumeration type is not | |
3476 | prepended to the enumerator. | |
91c24f0a | 3477 | |
72bf9492 DJ |
3478 | There are two complexities. One is DW_AT_specification; in this |
3479 | case "parent" means the parent of the target of the specification, | |
3480 | instead of the direct parent of the DIE. The other is compilers | |
3481 | which do not emit DW_TAG_namespace; in this case we try to guess | |
3482 | the fully qualified name of structure types from their members' | |
3483 | linkage names. This must be done using the DIE's children rather | |
3484 | than the children of any DW_AT_specification target. We only need | |
3485 | to do this for structures at the top level, i.e. if the target of | |
3486 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
3487 | have a parent. */ | |
3488 | ||
3489 | /* Compute the scope prefix associated with PDI's parent, in | |
3490 | compilation unit CU. The result will be allocated on CU's | |
3491 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
3492 | field. NULL is returned if no prefix is necessary. */ | |
3493 | static char * | |
3494 | partial_die_parent_scope (struct partial_die_info *pdi, | |
3495 | struct dwarf2_cu *cu) | |
3496 | { | |
3497 | char *grandparent_scope; | |
3498 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 3499 | |
72bf9492 DJ |
3500 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
3501 | then this means the parent of the specification DIE. */ | |
3502 | ||
3503 | real_pdi = pdi; | |
72bf9492 | 3504 | while (real_pdi->has_specification) |
10b3939b | 3505 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
3506 | |
3507 | parent = real_pdi->die_parent; | |
3508 | if (parent == NULL) | |
3509 | return NULL; | |
3510 | ||
3511 | if (parent->scope_set) | |
3512 | return parent->scope; | |
3513 | ||
3514 | fixup_partial_die (parent, cu); | |
3515 | ||
10b3939b | 3516 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 3517 | |
acebe513 UW |
3518 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
3519 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
3520 | Work around this problem here. */ | |
3521 | if (cu->language == language_cplus | |
6e70227d | 3522 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
3523 | && strcmp (parent->name, "::") == 0 |
3524 | && grandparent_scope == NULL) | |
3525 | { | |
3526 | parent->scope = NULL; | |
3527 | parent->scope_set = 1; | |
3528 | return NULL; | |
3529 | } | |
3530 | ||
72bf9492 | 3531 | if (parent->tag == DW_TAG_namespace |
f55ee35c | 3532 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
3533 | || parent->tag == DW_TAG_structure_type |
3534 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 3535 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
3536 | || parent->tag == DW_TAG_union_type |
3537 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
3538 | { |
3539 | if (grandparent_scope == NULL) | |
3540 | parent->scope = parent->name; | |
3541 | else | |
987504bb | 3542 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
f55ee35c | 3543 | parent->name, 0, cu); |
72bf9492 | 3544 | } |
ceeb3d5a | 3545 | else if (parent->tag == DW_TAG_enumerator) |
72bf9492 DJ |
3546 | /* Enumerators should not get the name of the enumeration as a prefix. */ |
3547 | parent->scope = grandparent_scope; | |
3548 | else | |
3549 | { | |
3550 | /* FIXME drow/2004-04-01: What should we be doing with | |
3551 | function-local names? For partial symbols, we should probably be | |
3552 | ignoring them. */ | |
3553 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3554 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
3555 | parent->tag, pdi->offset); |
3556 | parent->scope = grandparent_scope; | |
c906108c SS |
3557 | } |
3558 | ||
72bf9492 DJ |
3559 | parent->scope_set = 1; |
3560 | return parent->scope; | |
3561 | } | |
3562 | ||
3563 | /* Return the fully scoped name associated with PDI, from compilation unit | |
3564 | CU. The result will be allocated with malloc. */ | |
3565 | static char * | |
3566 | partial_die_full_name (struct partial_die_info *pdi, | |
3567 | struct dwarf2_cu *cu) | |
3568 | { | |
3569 | char *parent_scope; | |
3570 | ||
98bfdba5 PA |
3571 | /* If this is a template instantiation, we can not work out the |
3572 | template arguments from partial DIEs. So, unfortunately, we have | |
3573 | to go through the full DIEs. At least any work we do building | |
3574 | types here will be reused if full symbols are loaded later. */ | |
3575 | if (pdi->has_template_arguments) | |
3576 | { | |
3577 | fixup_partial_die (pdi, cu); | |
3578 | ||
3579 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
3580 | { | |
3581 | struct die_info *die; | |
3582 | struct attribute attr; | |
3583 | struct dwarf2_cu *ref_cu = cu; | |
3584 | ||
3585 | attr.name = 0; | |
3586 | attr.form = DW_FORM_ref_addr; | |
3587 | attr.u.addr = pdi->offset; | |
3588 | die = follow_die_ref (NULL, &attr, &ref_cu); | |
3589 | ||
3590 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
3591 | } | |
3592 | } | |
3593 | ||
72bf9492 DJ |
3594 | parent_scope = partial_die_parent_scope (pdi, cu); |
3595 | if (parent_scope == NULL) | |
3596 | return NULL; | |
3597 | else | |
f55ee35c | 3598 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
3599 | } |
3600 | ||
3601 | static void | |
72bf9492 | 3602 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 3603 | { |
e7c27a73 | 3604 | struct objfile *objfile = cu->objfile; |
c906108c | 3605 | CORE_ADDR addr = 0; |
decbce07 | 3606 | char *actual_name = NULL; |
5c4e30ca | 3607 | const struct partial_symbol *psym = NULL; |
e142c38c | 3608 | CORE_ADDR baseaddr; |
72bf9492 | 3609 | int built_actual_name = 0; |
e142c38c DJ |
3610 | |
3611 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 3612 | |
94af9270 KS |
3613 | actual_name = partial_die_full_name (pdi, cu); |
3614 | if (actual_name) | |
3615 | built_actual_name = 1; | |
63d06c5c | 3616 | |
72bf9492 DJ |
3617 | if (actual_name == NULL) |
3618 | actual_name = pdi->name; | |
3619 | ||
c906108c SS |
3620 | switch (pdi->tag) |
3621 | { | |
3622 | case DW_TAG_subprogram: | |
2cfa0c8d | 3623 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 3624 | { |
2cfa0c8d JB |
3625 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
3626 | of the global scope. But in Ada, we want to be able to access | |
3627 | nested procedures globally. So all Ada subprograms are stored | |
3628 | in the global scope. */ | |
38d518c9 | 3629 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3630 | mst_text, objfile); */ |
38d518c9 | 3631 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3632 | built_actual_name, |
5c4e30ca DC |
3633 | VAR_DOMAIN, LOC_BLOCK, |
3634 | &objfile->global_psymbols, | |
3635 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 3636 | cu->language, objfile); |
c906108c SS |
3637 | } |
3638 | else | |
3639 | { | |
38d518c9 | 3640 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3641 | mst_file_text, objfile); */ |
38d518c9 | 3642 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3643 | built_actual_name, |
5c4e30ca DC |
3644 | VAR_DOMAIN, LOC_BLOCK, |
3645 | &objfile->static_psymbols, | |
3646 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 3647 | cu->language, objfile); |
c906108c SS |
3648 | } |
3649 | break; | |
3650 | case DW_TAG_variable: | |
caac4577 JG |
3651 | if (pdi->locdesc) |
3652 | addr = decode_locdesc (pdi->locdesc, cu); | |
3653 | ||
3654 | if (pdi->locdesc | |
3655 | && addr == 0 | |
3656 | && !dwarf2_per_objfile->has_section_at_zero) | |
3657 | { | |
3658 | /* A global or static variable may also have been stripped | |
3659 | out by the linker if unused, in which case its address | |
3660 | will be nullified; do not add such variables into partial | |
3661 | symbol table then. */ | |
3662 | } | |
3663 | else if (pdi->is_external) | |
c906108c SS |
3664 | { |
3665 | /* Global Variable. | |
3666 | Don't enter into the minimal symbol tables as there is | |
3667 | a minimal symbol table entry from the ELF symbols already. | |
3668 | Enter into partial symbol table if it has a location | |
3669 | descriptor or a type. | |
3670 | If the location descriptor is missing, new_symbol will create | |
3671 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
3672 | be determined from the minimal symbol table whenever the variable | |
3673 | is referenced. | |
3674 | The address for the partial symbol table entry is not | |
3675 | used by GDB, but it comes in handy for debugging partial symbol | |
3676 | table building. */ | |
3677 | ||
c906108c | 3678 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 3679 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3680 | built_actual_name, |
5c4e30ca DC |
3681 | VAR_DOMAIN, LOC_STATIC, |
3682 | &objfile->global_psymbols, | |
3683 | 0, addr + baseaddr, | |
e142c38c | 3684 | cu->language, objfile); |
c906108c SS |
3685 | } |
3686 | else | |
3687 | { | |
3688 | /* Static Variable. Skip symbols without location descriptors. */ | |
3689 | if (pdi->locdesc == NULL) | |
decbce07 MS |
3690 | { |
3691 | if (built_actual_name) | |
3692 | xfree (actual_name); | |
3693 | return; | |
3694 | } | |
38d518c9 | 3695 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 3696 | mst_file_data, objfile); */ |
38d518c9 | 3697 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3698 | built_actual_name, |
5c4e30ca DC |
3699 | VAR_DOMAIN, LOC_STATIC, |
3700 | &objfile->static_psymbols, | |
3701 | 0, addr + baseaddr, | |
e142c38c | 3702 | cu->language, objfile); |
c906108c SS |
3703 | } |
3704 | break; | |
3705 | case DW_TAG_typedef: | |
3706 | case DW_TAG_base_type: | |
a02abb62 | 3707 | case DW_TAG_subrange_type: |
38d518c9 | 3708 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3709 | built_actual_name, |
176620f1 | 3710 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 3711 | &objfile->static_psymbols, |
e142c38c | 3712 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3713 | break; |
72bf9492 DJ |
3714 | case DW_TAG_namespace: |
3715 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 3716 | built_actual_name, |
72bf9492 DJ |
3717 | VAR_DOMAIN, LOC_TYPEDEF, |
3718 | &objfile->global_psymbols, | |
3719 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
3720 | break; | |
c906108c | 3721 | case DW_TAG_class_type: |
680b30c7 | 3722 | case DW_TAG_interface_type: |
c906108c SS |
3723 | case DW_TAG_structure_type: |
3724 | case DW_TAG_union_type: | |
3725 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
3726 | /* Skip external references. The DWARF standard says in the section |
3727 | about "Structure, Union, and Class Type Entries": "An incomplete | |
3728 | structure, union or class type is represented by a structure, | |
3729 | union or class entry that does not have a byte size attribute | |
3730 | and that has a DW_AT_declaration attribute." */ | |
3731 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
3732 | { |
3733 | if (built_actual_name) | |
3734 | xfree (actual_name); | |
3735 | return; | |
3736 | } | |
fa4028e9 | 3737 | |
63d06c5c DC |
3738 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
3739 | static vs. global. */ | |
38d518c9 | 3740 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3741 | built_actual_name, |
176620f1 | 3742 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
3743 | (cu->language == language_cplus |
3744 | || cu->language == language_java) | |
63d06c5c DC |
3745 | ? &objfile->global_psymbols |
3746 | : &objfile->static_psymbols, | |
e142c38c | 3747 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3748 | |
c906108c SS |
3749 | break; |
3750 | case DW_TAG_enumerator: | |
38d518c9 | 3751 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3752 | built_actual_name, |
176620f1 | 3753 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
3754 | (cu->language == language_cplus |
3755 | || cu->language == language_java) | |
f6fe98ef DJ |
3756 | ? &objfile->global_psymbols |
3757 | : &objfile->static_psymbols, | |
e142c38c | 3758 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
3759 | break; |
3760 | default: | |
3761 | break; | |
3762 | } | |
5c4e30ca | 3763 | |
72bf9492 DJ |
3764 | if (built_actual_name) |
3765 | xfree (actual_name); | |
c906108c SS |
3766 | } |
3767 | ||
5c4e30ca DC |
3768 | /* Read a partial die corresponding to a namespace; also, add a symbol |
3769 | corresponding to that namespace to the symbol table. NAMESPACE is | |
3770 | the name of the enclosing namespace. */ | |
91c24f0a | 3771 | |
72bf9492 DJ |
3772 | static void |
3773 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 3774 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 3775 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 3776 | { |
72bf9492 | 3777 | /* Add a symbol for the namespace. */ |
e7c27a73 | 3778 | |
72bf9492 | 3779 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
3780 | |
3781 | /* Now scan partial symbols in that namespace. */ | |
3782 | ||
91c24f0a | 3783 | if (pdi->has_children) |
5734ee8b | 3784 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
3785 | } |
3786 | ||
5d7cb8df JK |
3787 | /* Read a partial die corresponding to a Fortran module. */ |
3788 | ||
3789 | static void | |
3790 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
3791 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
3792 | { | |
f55ee35c | 3793 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
3794 | |
3795 | if (pdi->has_children) | |
3796 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
3797 | } | |
3798 | ||
bc30ff58 JB |
3799 | /* Read a partial die corresponding to a subprogram and create a partial |
3800 | symbol for that subprogram. When the CU language allows it, this | |
3801 | routine also defines a partial symbol for each nested subprogram | |
3802 | that this subprogram contains. | |
6e70227d | 3803 | |
bc30ff58 JB |
3804 | DIE my also be a lexical block, in which case we simply search |
3805 | recursively for suprograms defined inside that lexical block. | |
3806 | Again, this is only performed when the CU language allows this | |
3807 | type of definitions. */ | |
3808 | ||
3809 | static void | |
3810 | add_partial_subprogram (struct partial_die_info *pdi, | |
3811 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 3812 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
3813 | { |
3814 | if (pdi->tag == DW_TAG_subprogram) | |
3815 | { | |
3816 | if (pdi->has_pc_info) | |
3817 | { | |
3818 | if (pdi->lowpc < *lowpc) | |
3819 | *lowpc = pdi->lowpc; | |
3820 | if (pdi->highpc > *highpc) | |
3821 | *highpc = pdi->highpc; | |
5734ee8b DJ |
3822 | if (need_pc) |
3823 | { | |
3824 | CORE_ADDR baseaddr; | |
3825 | struct objfile *objfile = cu->objfile; | |
3826 | ||
3827 | baseaddr = ANOFFSET (objfile->section_offsets, | |
3828 | SECT_OFF_TEXT (objfile)); | |
3829 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
3830 | pdi->lowpc + baseaddr, |
3831 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 3832 | cu->per_cu->v.psymtab); |
5734ee8b | 3833 | } |
bc30ff58 | 3834 | if (!pdi->is_declaration) |
e8d05480 JB |
3835 | /* Ignore subprogram DIEs that do not have a name, they are |
3836 | illegal. Do not emit a complaint at this point, we will | |
3837 | do so when we convert this psymtab into a symtab. */ | |
3838 | if (pdi->name) | |
3839 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
3840 | } |
3841 | } | |
6e70227d | 3842 | |
bc30ff58 JB |
3843 | if (! pdi->has_children) |
3844 | return; | |
3845 | ||
3846 | if (cu->language == language_ada) | |
3847 | { | |
3848 | pdi = pdi->die_child; | |
3849 | while (pdi != NULL) | |
3850 | { | |
3851 | fixup_partial_die (pdi, cu); | |
3852 | if (pdi->tag == DW_TAG_subprogram | |
3853 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 3854 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
3855 | pdi = pdi->die_sibling; |
3856 | } | |
3857 | } | |
3858 | } | |
3859 | ||
72bf9492 DJ |
3860 | /* See if we can figure out if the class lives in a namespace. We do |
3861 | this by looking for a member function; its demangled name will | |
3862 | contain namespace info, if there is any. */ | |
63d06c5c | 3863 | |
72bf9492 DJ |
3864 | static void |
3865 | guess_structure_name (struct partial_die_info *struct_pdi, | |
3866 | struct dwarf2_cu *cu) | |
63d06c5c | 3867 | { |
987504bb JJ |
3868 | if ((cu->language == language_cplus |
3869 | || cu->language == language_java) | |
72bf9492 | 3870 | && cu->has_namespace_info == 0 |
63d06c5c DC |
3871 | && struct_pdi->has_children) |
3872 | { | |
63d06c5c DC |
3873 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
3874 | what template types look like, because the demangler | |
3875 | frequently doesn't give the same name as the debug info. We | |
3876 | could fix this by only using the demangled name to get the | |
134d01f1 | 3877 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 3878 | |
72bf9492 | 3879 | struct partial_die_info *real_pdi; |
5d51ca54 | 3880 | |
72bf9492 DJ |
3881 | /* If this DIE (this DIE's specification, if any) has a parent, then |
3882 | we should not do this. We'll prepend the parent's fully qualified | |
3883 | name when we create the partial symbol. */ | |
5d51ca54 | 3884 | |
72bf9492 | 3885 | real_pdi = struct_pdi; |
72bf9492 | 3886 | while (real_pdi->has_specification) |
10b3939b | 3887 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 3888 | |
72bf9492 DJ |
3889 | if (real_pdi->die_parent != NULL) |
3890 | return; | |
63d06c5c | 3891 | } |
63d06c5c DC |
3892 | } |
3893 | ||
91c24f0a DC |
3894 | /* Read a partial die corresponding to an enumeration type. */ |
3895 | ||
72bf9492 DJ |
3896 | static void |
3897 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
3898 | struct dwarf2_cu *cu) | |
91c24f0a | 3899 | { |
72bf9492 | 3900 | struct partial_die_info *pdi; |
91c24f0a DC |
3901 | |
3902 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
3903 | add_partial_symbol (enum_pdi, cu); |
3904 | ||
3905 | pdi = enum_pdi->die_child; | |
3906 | while (pdi) | |
91c24f0a | 3907 | { |
72bf9492 | 3908 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 3909 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 3910 | else |
72bf9492 DJ |
3911 | add_partial_symbol (pdi, cu); |
3912 | pdi = pdi->die_sibling; | |
91c24f0a | 3913 | } |
91c24f0a DC |
3914 | } |
3915 | ||
4bb7a0a7 DJ |
3916 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
3917 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
3918 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
3919 | the initial number. */ | |
3920 | ||
3921 | static struct abbrev_info * | |
fe1b8b76 | 3922 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 3923 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
3924 | { |
3925 | bfd *abfd = cu->objfile->obfd; | |
3926 | unsigned int abbrev_number; | |
3927 | struct abbrev_info *abbrev; | |
3928 | ||
3929 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
3930 | ||
3931 | if (abbrev_number == 0) | |
3932 | return NULL; | |
3933 | ||
3934 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
3935 | if (!abbrev) | |
3936 | { | |
8a3fe4f8 | 3937 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
3938 | bfd_get_filename (abfd)); |
3939 | } | |
3940 | ||
3941 | return abbrev; | |
3942 | } | |
3943 | ||
93311388 DE |
3944 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
3945 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
3946 | DIE. Any children of the skipped DIEs will also be skipped. */ |
3947 | ||
fe1b8b76 | 3948 | static gdb_byte * |
93311388 | 3949 | skip_children (gdb_byte *buffer, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
3950 | { |
3951 | struct abbrev_info *abbrev; | |
3952 | unsigned int bytes_read; | |
3953 | ||
3954 | while (1) | |
3955 | { | |
3956 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
3957 | if (abbrev == NULL) | |
3958 | return info_ptr + bytes_read; | |
3959 | else | |
93311388 | 3960 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
4bb7a0a7 DJ |
3961 | } |
3962 | } | |
3963 | ||
93311388 DE |
3964 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
3965 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
3966 | abbrev corresponding to that skipped uleb128 should be passed in |
3967 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
3968 | children. */ | |
3969 | ||
fe1b8b76 | 3970 | static gdb_byte * |
93311388 DE |
3971 | skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
3972 | struct abbrev_info *abbrev, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
3973 | { |
3974 | unsigned int bytes_read; | |
3975 | struct attribute attr; | |
3976 | bfd *abfd = cu->objfile->obfd; | |
3977 | unsigned int form, i; | |
3978 | ||
3979 | for (i = 0; i < abbrev->num_attrs; i++) | |
3980 | { | |
3981 | /* The only abbrev we care about is DW_AT_sibling. */ | |
3982 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
3983 | { | |
3984 | read_attribute (&attr, &abbrev->attrs[i], | |
3985 | abfd, info_ptr, cu); | |
3986 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 3987 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 3988 | else |
93311388 | 3989 | return buffer + dwarf2_get_ref_die_offset (&attr); |
4bb7a0a7 DJ |
3990 | } |
3991 | ||
3992 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
3993 | form = abbrev->attrs[i].form; | |
3994 | skip_attribute: | |
3995 | switch (form) | |
3996 | { | |
4bb7a0a7 | 3997 | case DW_FORM_ref_addr: |
ae411497 TT |
3998 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
3999 | and later it is offset sized. */ | |
4000 | if (cu->header.version == 2) | |
4001 | info_ptr += cu->header.addr_size; | |
4002 | else | |
4003 | info_ptr += cu->header.offset_size; | |
4004 | break; | |
4005 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
4006 | info_ptr += cu->header.addr_size; |
4007 | break; | |
4008 | case DW_FORM_data1: | |
4009 | case DW_FORM_ref1: | |
4010 | case DW_FORM_flag: | |
4011 | info_ptr += 1; | |
4012 | break; | |
2dc7f7b3 TT |
4013 | case DW_FORM_flag_present: |
4014 | break; | |
4bb7a0a7 DJ |
4015 | case DW_FORM_data2: |
4016 | case DW_FORM_ref2: | |
4017 | info_ptr += 2; | |
4018 | break; | |
4019 | case DW_FORM_data4: | |
4020 | case DW_FORM_ref4: | |
4021 | info_ptr += 4; | |
4022 | break; | |
4023 | case DW_FORM_data8: | |
4024 | case DW_FORM_ref8: | |
348e048f | 4025 | case DW_FORM_sig8: |
4bb7a0a7 DJ |
4026 | info_ptr += 8; |
4027 | break; | |
4028 | case DW_FORM_string: | |
9b1c24c8 | 4029 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
4030 | info_ptr += bytes_read; |
4031 | break; | |
2dc7f7b3 | 4032 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
4033 | case DW_FORM_strp: |
4034 | info_ptr += cu->header.offset_size; | |
4035 | break; | |
2dc7f7b3 | 4036 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
4037 | case DW_FORM_block: |
4038 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4039 | info_ptr += bytes_read; | |
4040 | break; | |
4041 | case DW_FORM_block1: | |
4042 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
4043 | break; | |
4044 | case DW_FORM_block2: | |
4045 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
4046 | break; | |
4047 | case DW_FORM_block4: | |
4048 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
4049 | break; | |
4050 | case DW_FORM_sdata: | |
4051 | case DW_FORM_udata: | |
4052 | case DW_FORM_ref_udata: | |
4053 | info_ptr = skip_leb128 (abfd, info_ptr); | |
4054 | break; | |
4055 | case DW_FORM_indirect: | |
4056 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4057 | info_ptr += bytes_read; | |
4058 | /* We need to continue parsing from here, so just go back to | |
4059 | the top. */ | |
4060 | goto skip_attribute; | |
4061 | ||
4062 | default: | |
8a3fe4f8 | 4063 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
4064 | dwarf_form_name (form), |
4065 | bfd_get_filename (abfd)); | |
4066 | } | |
4067 | } | |
4068 | ||
4069 | if (abbrev->has_children) | |
93311388 | 4070 | return skip_children (buffer, info_ptr, cu); |
4bb7a0a7 DJ |
4071 | else |
4072 | return info_ptr; | |
4073 | } | |
4074 | ||
93311388 DE |
4075 | /* Locate ORIG_PDI's sibling. |
4076 | INFO_PTR should point to the start of the next DIE after ORIG_PDI | |
4077 | in BUFFER. */ | |
91c24f0a | 4078 | |
fe1b8b76 | 4079 | static gdb_byte * |
93311388 DE |
4080 | locate_pdi_sibling (struct partial_die_info *orig_pdi, |
4081 | gdb_byte *buffer, gdb_byte *info_ptr, | |
e7c27a73 | 4082 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
4083 | { |
4084 | /* Do we know the sibling already? */ | |
72bf9492 | 4085 | |
91c24f0a DC |
4086 | if (orig_pdi->sibling) |
4087 | return orig_pdi->sibling; | |
4088 | ||
4089 | /* Are there any children to deal with? */ | |
4090 | ||
4091 | if (!orig_pdi->has_children) | |
4092 | return info_ptr; | |
4093 | ||
4bb7a0a7 | 4094 | /* Skip the children the long way. */ |
91c24f0a | 4095 | |
93311388 | 4096 | return skip_children (buffer, info_ptr, cu); |
91c24f0a DC |
4097 | } |
4098 | ||
c906108c SS |
4099 | /* Expand this partial symbol table into a full symbol table. */ |
4100 | ||
4101 | static void | |
fba45db2 | 4102 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 4103 | { |
c906108c SS |
4104 | if (pst != NULL) |
4105 | { | |
4106 | if (pst->readin) | |
4107 | { | |
8a3fe4f8 | 4108 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
4109 | } |
4110 | else | |
4111 | { | |
4112 | if (info_verbose) | |
4113 | { | |
a3f17187 | 4114 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
4115 | gdb_flush (gdb_stdout); |
4116 | } | |
4117 | ||
10b3939b DJ |
4118 | /* Restore our global data. */ |
4119 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
4120 | dwarf2_objfile_data_key); | |
4121 | ||
b2ab525c KB |
4122 | /* If this psymtab is constructed from a debug-only objfile, the |
4123 | has_section_at_zero flag will not necessarily be correct. We | |
4124 | can get the correct value for this flag by looking at the data | |
4125 | associated with the (presumably stripped) associated objfile. */ | |
4126 | if (pst->objfile->separate_debug_objfile_backlink) | |
4127 | { | |
4128 | struct dwarf2_per_objfile *dpo_backlink | |
4129 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
4130 | dwarf2_objfile_data_key); | |
9a619af0 | 4131 | |
b2ab525c KB |
4132 | dwarf2_per_objfile->has_section_at_zero |
4133 | = dpo_backlink->has_section_at_zero; | |
4134 | } | |
4135 | ||
98bfdba5 PA |
4136 | dwarf2_per_objfile->reading_partial_symbols = 0; |
4137 | ||
c906108c SS |
4138 | psymtab_to_symtab_1 (pst); |
4139 | ||
4140 | /* Finish up the debug error message. */ | |
4141 | if (info_verbose) | |
a3f17187 | 4142 | printf_filtered (_("done.\n")); |
c906108c SS |
4143 | } |
4144 | } | |
4145 | } | |
4146 | ||
10b3939b DJ |
4147 | /* Add PER_CU to the queue. */ |
4148 | ||
4149 | static void | |
03dd20cc | 4150 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b DJ |
4151 | { |
4152 | struct dwarf2_queue_item *item; | |
4153 | ||
4154 | per_cu->queued = 1; | |
4155 | item = xmalloc (sizeof (*item)); | |
4156 | item->per_cu = per_cu; | |
4157 | item->next = NULL; | |
4158 | ||
4159 | if (dwarf2_queue == NULL) | |
4160 | dwarf2_queue = item; | |
4161 | else | |
4162 | dwarf2_queue_tail->next = item; | |
4163 | ||
4164 | dwarf2_queue_tail = item; | |
4165 | } | |
4166 | ||
4167 | /* Process the queue. */ | |
4168 | ||
4169 | static void | |
4170 | process_queue (struct objfile *objfile) | |
4171 | { | |
4172 | struct dwarf2_queue_item *item, *next_item; | |
4173 | ||
03dd20cc DJ |
4174 | /* The queue starts out with one item, but following a DIE reference |
4175 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
4176 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
4177 | { | |
9291a0cd TT |
4178 | if (dwarf2_per_objfile->using_index |
4179 | ? !item->per_cu->v.quick->symtab | |
4180 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
10b3939b DJ |
4181 | process_full_comp_unit (item->per_cu); |
4182 | ||
4183 | item->per_cu->queued = 0; | |
4184 | next_item = item->next; | |
4185 | xfree (item); | |
4186 | } | |
4187 | ||
4188 | dwarf2_queue_tail = NULL; | |
4189 | } | |
4190 | ||
4191 | /* Free all allocated queue entries. This function only releases anything if | |
4192 | an error was thrown; if the queue was processed then it would have been | |
4193 | freed as we went along. */ | |
4194 | ||
4195 | static void | |
4196 | dwarf2_release_queue (void *dummy) | |
4197 | { | |
4198 | struct dwarf2_queue_item *item, *last; | |
4199 | ||
4200 | item = dwarf2_queue; | |
4201 | while (item) | |
4202 | { | |
4203 | /* Anything still marked queued is likely to be in an | |
4204 | inconsistent state, so discard it. */ | |
4205 | if (item->per_cu->queued) | |
4206 | { | |
4207 | if (item->per_cu->cu != NULL) | |
4208 | free_one_cached_comp_unit (item->per_cu->cu); | |
4209 | item->per_cu->queued = 0; | |
4210 | } | |
4211 | ||
4212 | last = item; | |
4213 | item = item->next; | |
4214 | xfree (last); | |
4215 | } | |
4216 | ||
4217 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
4218 | } | |
4219 | ||
4220 | /* Read in full symbols for PST, and anything it depends on. */ | |
4221 | ||
c906108c | 4222 | static void |
fba45db2 | 4223 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 4224 | { |
10b3939b | 4225 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 4226 | struct cleanup *back_to; |
aaa75496 JB |
4227 | int i; |
4228 | ||
4229 | for (i = 0; i < pst->number_of_dependencies; i++) | |
4230 | if (!pst->dependencies[i]->readin) | |
4231 | { | |
4232 | /* Inform about additional files that need to be read in. */ | |
4233 | if (info_verbose) | |
4234 | { | |
a3f17187 | 4235 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
4236 | fputs_filtered (" ", gdb_stdout); |
4237 | wrap_here (""); | |
4238 | fputs_filtered ("and ", gdb_stdout); | |
4239 | wrap_here (""); | |
4240 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
4241 | wrap_here (""); /* Flush output */ | |
4242 | gdb_flush (gdb_stdout); | |
4243 | } | |
4244 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
4245 | } | |
4246 | ||
e38df1d0 | 4247 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
4248 | |
4249 | if (per_cu == NULL) | |
aaa75496 JB |
4250 | { |
4251 | /* It's an include file, no symbols to read for it. | |
4252 | Everything is in the parent symtab. */ | |
4253 | pst->readin = 1; | |
4254 | return; | |
4255 | } | |
c906108c | 4256 | |
9291a0cd | 4257 | dw2_do_instantiate_symtab (pst->objfile, per_cu); |
10b3939b DJ |
4258 | } |
4259 | ||
93311388 | 4260 | /* Load the DIEs associated with PER_CU into memory. */ |
10b3939b | 4261 | |
93311388 | 4262 | static void |
31ffec48 | 4263 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 4264 | { |
31ffec48 | 4265 | bfd *abfd = objfile->obfd; |
10b3939b | 4266 | struct dwarf2_cu *cu; |
c764a876 | 4267 | unsigned int offset; |
93311388 | 4268 | gdb_byte *info_ptr, *beg_of_comp_unit; |
98bfdba5 | 4269 | struct cleanup *free_abbrevs_cleanup = NULL, *free_cu_cleanup = NULL; |
10b3939b | 4270 | struct attribute *attr; |
98bfdba5 | 4271 | int read_cu = 0; |
6502dd73 | 4272 | |
348e048f DE |
4273 | gdb_assert (! per_cu->from_debug_types); |
4274 | ||
c906108c | 4275 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 4276 | offset = per_cu->offset; |
6502dd73 | 4277 | |
be391dca | 4278 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
dce234bc | 4279 | info_ptr = dwarf2_per_objfile->info.buffer + offset; |
93311388 | 4280 | beg_of_comp_unit = info_ptr; |
63d06c5c | 4281 | |
98bfdba5 PA |
4282 | if (per_cu->cu == NULL) |
4283 | { | |
4284 | cu = alloc_one_comp_unit (objfile); | |
4285 | ||
4286 | read_cu = 1; | |
c906108c | 4287 | |
98bfdba5 PA |
4288 | /* If an error occurs while loading, release our storage. */ |
4289 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 4290 | |
98bfdba5 PA |
4291 | /* Read in the comp_unit header. */ |
4292 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); | |
c906108c | 4293 | |
98bfdba5 PA |
4294 | /* Complete the cu_header. */ |
4295 | cu->header.offset = offset; | |
4296 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
93311388 | 4297 | |
98bfdba5 PA |
4298 | /* Read the abbrevs for this compilation unit. */ |
4299 | dwarf2_read_abbrevs (abfd, cu); | |
4300 | free_abbrevs_cleanup = make_cleanup (dwarf2_free_abbrev_table, cu); | |
10b3939b | 4301 | |
98bfdba5 PA |
4302 | /* Link this compilation unit into the compilation unit tree. */ |
4303 | per_cu->cu = cu; | |
4304 | cu->per_cu = per_cu; | |
4305 | cu->type_hash = per_cu->type_hash; | |
4306 | ||
4307 | /* Link this CU into read_in_chain. */ | |
4308 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4309 | dwarf2_per_objfile->read_in_chain = per_cu; | |
4310 | } | |
4311 | else | |
4312 | { | |
4313 | cu = per_cu->cu; | |
4314 | info_ptr += cu->header.first_die_offset; | |
4315 | } | |
e142c38c | 4316 | |
93311388 | 4317 | cu->dies = read_comp_unit (info_ptr, cu); |
10b3939b DJ |
4318 | |
4319 | /* We try not to read any attributes in this function, because not | |
4320 | all objfiles needed for references have been loaded yet, and symbol | |
4321 | table processing isn't initialized. But we have to set the CU language, | |
4322 | or we won't be able to build types correctly. */ | |
4323 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
4324 | if (attr) | |
4325 | set_cu_language (DW_UNSND (attr), cu); | |
4326 | else | |
4327 | set_cu_language (language_minimal, cu); | |
4328 | ||
a6c727b2 DJ |
4329 | /* Similarly, if we do not read the producer, we can not apply |
4330 | producer-specific interpretation. */ | |
4331 | attr = dwarf2_attr (cu->dies, DW_AT_producer, cu); | |
4332 | if (attr) | |
4333 | cu->producer = DW_STRING (attr); | |
4334 | ||
98bfdba5 PA |
4335 | if (read_cu) |
4336 | { | |
4337 | do_cleanups (free_abbrevs_cleanup); | |
e142c38c | 4338 | |
98bfdba5 PA |
4339 | /* We've successfully allocated this compilation unit. Let our |
4340 | caller clean it up when finished with it. */ | |
4341 | discard_cleanups (free_cu_cleanup); | |
4342 | } | |
10b3939b DJ |
4343 | } |
4344 | ||
4345 | /* Generate full symbol information for PST and CU, whose DIEs have | |
4346 | already been loaded into memory. */ | |
4347 | ||
4348 | static void | |
4349 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
4350 | { | |
10b3939b | 4351 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 4352 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
4353 | CORE_ADDR lowpc, highpc; |
4354 | struct symtab *symtab; | |
4355 | struct cleanup *back_to; | |
10b3939b DJ |
4356 | CORE_ADDR baseaddr; |
4357 | ||
4358 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
4359 | ||
10b3939b DJ |
4360 | buildsym_init (); |
4361 | back_to = make_cleanup (really_free_pendings, NULL); | |
4362 | ||
4363 | cu->list_in_scope = &file_symbols; | |
c906108c | 4364 | |
d85a05f0 | 4365 | dwarf2_find_base_address (cu->dies, cu); |
0d53c4c4 | 4366 | |
c906108c | 4367 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 4368 | process_die (cu->dies, cu); |
c906108c | 4369 | |
fae299cd DC |
4370 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
4371 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
4372 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 4373 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 4374 | |
613e1657 | 4375 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
4376 | |
4377 | /* Set symtab language to language from DW_AT_language. | |
4378 | If the compilation is from a C file generated by language preprocessors, | |
4379 | do not set the language if it was already deduced by start_subfile. */ | |
4380 | if (symtab != NULL | |
10b3939b | 4381 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 4382 | { |
10b3939b | 4383 | symtab->language = cu->language; |
c906108c | 4384 | } |
9291a0cd TT |
4385 | |
4386 | if (dwarf2_per_objfile->using_index) | |
4387 | per_cu->v.quick->symtab = symtab; | |
4388 | else | |
4389 | { | |
4390 | struct partial_symtab *pst = per_cu->v.psymtab; | |
4391 | pst->symtab = symtab; | |
4392 | pst->readin = 1; | |
4393 | } | |
c906108c SS |
4394 | |
4395 | do_cleanups (back_to); | |
4396 | } | |
4397 | ||
4398 | /* Process a die and its children. */ | |
4399 | ||
4400 | static void | |
e7c27a73 | 4401 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4402 | { |
4403 | switch (die->tag) | |
4404 | { | |
4405 | case DW_TAG_padding: | |
4406 | break; | |
4407 | case DW_TAG_compile_unit: | |
e7c27a73 | 4408 | read_file_scope (die, cu); |
c906108c | 4409 | break; |
348e048f DE |
4410 | case DW_TAG_type_unit: |
4411 | read_type_unit_scope (die, cu); | |
4412 | break; | |
c906108c | 4413 | case DW_TAG_subprogram: |
c906108c | 4414 | case DW_TAG_inlined_subroutine: |
edb3359d | 4415 | read_func_scope (die, cu); |
c906108c SS |
4416 | break; |
4417 | case DW_TAG_lexical_block: | |
14898363 L |
4418 | case DW_TAG_try_block: |
4419 | case DW_TAG_catch_block: | |
e7c27a73 | 4420 | read_lexical_block_scope (die, cu); |
c906108c SS |
4421 | break; |
4422 | case DW_TAG_class_type: | |
680b30c7 | 4423 | case DW_TAG_interface_type: |
c906108c SS |
4424 | case DW_TAG_structure_type: |
4425 | case DW_TAG_union_type: | |
134d01f1 | 4426 | process_structure_scope (die, cu); |
c906108c SS |
4427 | break; |
4428 | case DW_TAG_enumeration_type: | |
134d01f1 | 4429 | process_enumeration_scope (die, cu); |
c906108c | 4430 | break; |
134d01f1 | 4431 | |
f792889a DJ |
4432 | /* These dies have a type, but processing them does not create |
4433 | a symbol or recurse to process the children. Therefore we can | |
4434 | read them on-demand through read_type_die. */ | |
c906108c | 4435 | case DW_TAG_subroutine_type: |
72019c9c | 4436 | case DW_TAG_set_type: |
c906108c | 4437 | case DW_TAG_array_type: |
c906108c | 4438 | case DW_TAG_pointer_type: |
c906108c | 4439 | case DW_TAG_ptr_to_member_type: |
c906108c | 4440 | case DW_TAG_reference_type: |
c906108c | 4441 | case DW_TAG_string_type: |
c906108c | 4442 | break; |
134d01f1 | 4443 | |
c906108c | 4444 | case DW_TAG_base_type: |
a02abb62 | 4445 | case DW_TAG_subrange_type: |
cb249c71 | 4446 | case DW_TAG_typedef: |
134d01f1 DJ |
4447 | /* Add a typedef symbol for the type definition, if it has a |
4448 | DW_AT_name. */ | |
f792889a | 4449 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 4450 | break; |
c906108c | 4451 | case DW_TAG_common_block: |
e7c27a73 | 4452 | read_common_block (die, cu); |
c906108c SS |
4453 | break; |
4454 | case DW_TAG_common_inclusion: | |
4455 | break; | |
d9fa45fe | 4456 | case DW_TAG_namespace: |
63d06c5c | 4457 | processing_has_namespace_info = 1; |
e7c27a73 | 4458 | read_namespace (die, cu); |
d9fa45fe | 4459 | break; |
5d7cb8df | 4460 | case DW_TAG_module: |
f55ee35c | 4461 | processing_has_namespace_info = 1; |
5d7cb8df JK |
4462 | read_module (die, cu); |
4463 | break; | |
d9fa45fe DC |
4464 | case DW_TAG_imported_declaration: |
4465 | case DW_TAG_imported_module: | |
63d06c5c | 4466 | processing_has_namespace_info = 1; |
27aa8d6a SW |
4467 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
4468 | || cu->language != language_fortran)) | |
4469 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
4470 | dwarf_tag_name (die->tag)); | |
4471 | read_import_statement (die, cu); | |
d9fa45fe | 4472 | break; |
c906108c | 4473 | default: |
e7c27a73 | 4474 | new_symbol (die, NULL, cu); |
c906108c SS |
4475 | break; |
4476 | } | |
4477 | } | |
4478 | ||
94af9270 KS |
4479 | /* A helper function for dwarf2_compute_name which determines whether DIE |
4480 | needs to have the name of the scope prepended to the name listed in the | |
4481 | die. */ | |
4482 | ||
4483 | static int | |
4484 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
4485 | { | |
1c809c68 TT |
4486 | struct attribute *attr; |
4487 | ||
94af9270 KS |
4488 | switch (die->tag) |
4489 | { | |
4490 | case DW_TAG_namespace: | |
4491 | case DW_TAG_typedef: | |
4492 | case DW_TAG_class_type: | |
4493 | case DW_TAG_interface_type: | |
4494 | case DW_TAG_structure_type: | |
4495 | case DW_TAG_union_type: | |
4496 | case DW_TAG_enumeration_type: | |
4497 | case DW_TAG_enumerator: | |
4498 | case DW_TAG_subprogram: | |
4499 | case DW_TAG_member: | |
4500 | return 1; | |
4501 | ||
4502 | case DW_TAG_variable: | |
4503 | /* We only need to prefix "globally" visible variables. These include | |
4504 | any variable marked with DW_AT_external or any variable that | |
4505 | lives in a namespace. [Variables in anonymous namespaces | |
4506 | require prefixing, but they are not DW_AT_external.] */ | |
4507 | ||
4508 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
4509 | { | |
4510 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 4511 | |
94af9270 KS |
4512 | return die_needs_namespace (die_specification (die, &spec_cu), |
4513 | spec_cu); | |
4514 | } | |
4515 | ||
1c809c68 | 4516 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
4517 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
4518 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
4519 | return 0; |
4520 | /* A variable in a lexical block of some kind does not need a | |
4521 | namespace, even though in C++ such variables may be external | |
4522 | and have a mangled name. */ | |
4523 | if (die->parent->tag == DW_TAG_lexical_block | |
4524 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
4525 | || die->parent->tag == DW_TAG_catch_block |
4526 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
4527 | return 0; |
4528 | return 1; | |
94af9270 KS |
4529 | |
4530 | default: | |
4531 | return 0; | |
4532 | } | |
4533 | } | |
4534 | ||
98bfdba5 PA |
4535 | /* Retrieve the last character from a mem_file. */ |
4536 | ||
4537 | static void | |
4538 | do_ui_file_peek_last (void *object, const char *buffer, long length) | |
4539 | { | |
4540 | char *last_char_p = (char *) object; | |
4541 | ||
4542 | if (length > 0) | |
4543 | *last_char_p = buffer[length - 1]; | |
4544 | } | |
4545 | ||
94af9270 KS |
4546 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
4547 | compute the physname for the object, which include a method's | |
4548 | formal parameters (C++/Java) and return type (Java). | |
4549 | ||
af6b7be1 JB |
4550 | For Ada, return the DIE's linkage name rather than the fully qualified |
4551 | name. PHYSNAME is ignored.. | |
4552 | ||
94af9270 KS |
4553 | The result is allocated on the objfile_obstack and canonicalized. */ |
4554 | ||
4555 | static const char * | |
4556 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
4557 | int physname) | |
4558 | { | |
4559 | if (name == NULL) | |
4560 | name = dwarf2_name (die, cu); | |
4561 | ||
f55ee35c JK |
4562 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
4563 | compute it by typename_concat inside GDB. */ | |
4564 | if (cu->language == language_ada | |
4565 | || (cu->language == language_fortran && physname)) | |
4566 | { | |
4567 | /* For Ada unit, we prefer the linkage name over the name, as | |
4568 | the former contains the exported name, which the user expects | |
4569 | to be able to reference. Ideally, we want the user to be able | |
4570 | to reference this entity using either natural or linkage name, | |
4571 | but we haven't started looking at this enhancement yet. */ | |
4572 | struct attribute *attr; | |
4573 | ||
4574 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
4575 | if (attr == NULL) | |
4576 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
4577 | if (attr && DW_STRING (attr)) | |
4578 | return DW_STRING (attr); | |
4579 | } | |
4580 | ||
94af9270 KS |
4581 | /* These are the only languages we know how to qualify names in. */ |
4582 | if (name != NULL | |
f55ee35c JK |
4583 | && (cu->language == language_cplus || cu->language == language_java |
4584 | || cu->language == language_fortran)) | |
94af9270 KS |
4585 | { |
4586 | if (die_needs_namespace (die, cu)) | |
4587 | { | |
4588 | long length; | |
4589 | char *prefix; | |
4590 | struct ui_file *buf; | |
4591 | ||
4592 | prefix = determine_prefix (die, cu); | |
4593 | buf = mem_fileopen (); | |
4594 | if (*prefix != '\0') | |
4595 | { | |
f55ee35c JK |
4596 | char *prefixed_name = typename_concat (NULL, prefix, name, |
4597 | physname, cu); | |
9a619af0 | 4598 | |
94af9270 KS |
4599 | fputs_unfiltered (prefixed_name, buf); |
4600 | xfree (prefixed_name); | |
4601 | } | |
4602 | else | |
4603 | fputs_unfiltered (name ? name : "", buf); | |
4604 | ||
98bfdba5 PA |
4605 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
4606 | as children with DW_TAG_template_type_param or | |
4607 | DW_TAG_value_type_param. If the latter, add them to the name | |
4608 | here. If the name already has template parameters, then | |
4609 | skip this step; some versions of GCC emit both, and | |
4610 | it is more efficient to use the pre-computed name. | |
4611 | ||
4612 | Something to keep in mind about this process: it is very | |
4613 | unlikely, or in some cases downright impossible, to produce | |
4614 | something that will match the mangled name of a function. | |
4615 | If the definition of the function has the same debug info, | |
4616 | we should be able to match up with it anyway. But fallbacks | |
4617 | using the minimal symbol, for instance to find a method | |
4618 | implemented in a stripped copy of libstdc++, will not work. | |
4619 | If we do not have debug info for the definition, we will have to | |
4620 | match them up some other way. | |
4621 | ||
4622 | When we do name matching there is a related problem with function | |
4623 | templates; two instantiated function templates are allowed to | |
4624 | differ only by their return types, which we do not add here. */ | |
4625 | ||
4626 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
4627 | { | |
4628 | struct attribute *attr; | |
4629 | struct die_info *child; | |
4630 | int first = 1; | |
4631 | ||
4632 | die->building_fullname = 1; | |
4633 | ||
4634 | for (child = die->child; child != NULL; child = child->sibling) | |
4635 | { | |
4636 | struct type *type; | |
4637 | long value; | |
4638 | gdb_byte *bytes; | |
4639 | struct dwarf2_locexpr_baton *baton; | |
4640 | struct value *v; | |
4641 | ||
4642 | if (child->tag != DW_TAG_template_type_param | |
4643 | && child->tag != DW_TAG_template_value_param) | |
4644 | continue; | |
4645 | ||
4646 | if (first) | |
4647 | { | |
4648 | fputs_unfiltered ("<", buf); | |
4649 | first = 0; | |
4650 | } | |
4651 | else | |
4652 | fputs_unfiltered (", ", buf); | |
4653 | ||
4654 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
4655 | if (attr == NULL) | |
4656 | { | |
4657 | complaint (&symfile_complaints, | |
4658 | _("template parameter missing DW_AT_type")); | |
4659 | fputs_unfiltered ("UNKNOWN_TYPE", buf); | |
4660 | continue; | |
4661 | } | |
4662 | type = die_type (child, cu); | |
4663 | ||
4664 | if (child->tag == DW_TAG_template_type_param) | |
4665 | { | |
4666 | c_print_type (type, "", buf, -1, 0); | |
4667 | continue; | |
4668 | } | |
4669 | ||
4670 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
4671 | if (attr == NULL) | |
4672 | { | |
4673 | complaint (&symfile_complaints, | |
4674 | _("template parameter missing DW_AT_const_value")); | |
4675 | fputs_unfiltered ("UNKNOWN_VALUE", buf); | |
4676 | continue; | |
4677 | } | |
4678 | ||
4679 | dwarf2_const_value_attr (attr, type, name, | |
4680 | &cu->comp_unit_obstack, cu, | |
4681 | &value, &bytes, &baton); | |
4682 | ||
4683 | if (TYPE_NOSIGN (type)) | |
4684 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
4685 | changed, this can use value_print instead. */ | |
4686 | c_printchar (value, type, buf); | |
4687 | else | |
4688 | { | |
4689 | struct value_print_options opts; | |
4690 | ||
4691 | if (baton != NULL) | |
4692 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
4693 | baton->data, | |
4694 | baton->size, | |
4695 | baton->per_cu); | |
4696 | else if (bytes != NULL) | |
4697 | { | |
4698 | v = allocate_value (type); | |
4699 | memcpy (value_contents_writeable (v), bytes, | |
4700 | TYPE_LENGTH (type)); | |
4701 | } | |
4702 | else | |
4703 | v = value_from_longest (type, value); | |
4704 | ||
4705 | /* Specify decimal so that we do not depend on the radix. */ | |
4706 | get_formatted_print_options (&opts, 'd'); | |
4707 | opts.raw = 1; | |
4708 | value_print (v, buf, &opts); | |
4709 | release_value (v); | |
4710 | value_free (v); | |
4711 | } | |
4712 | } | |
4713 | ||
4714 | die->building_fullname = 0; | |
4715 | ||
4716 | if (!first) | |
4717 | { | |
4718 | /* Close the argument list, with a space if necessary | |
4719 | (nested templates). */ | |
4720 | char last_char = '\0'; | |
4721 | ui_file_put (buf, do_ui_file_peek_last, &last_char); | |
4722 | if (last_char == '>') | |
4723 | fputs_unfiltered (" >", buf); | |
4724 | else | |
4725 | fputs_unfiltered (">", buf); | |
4726 | } | |
4727 | } | |
4728 | ||
94af9270 KS |
4729 | /* For Java and C++ methods, append formal parameter type |
4730 | information, if PHYSNAME. */ | |
6e70227d | 4731 | |
94af9270 KS |
4732 | if (physname && die->tag == DW_TAG_subprogram |
4733 | && (cu->language == language_cplus | |
4734 | || cu->language == language_java)) | |
4735 | { | |
4736 | struct type *type = read_type_die (die, cu); | |
4737 | ||
4738 | c_type_print_args (type, buf, 0, cu->language); | |
4739 | ||
4740 | if (cu->language == language_java) | |
4741 | { | |
4742 | /* For java, we must append the return type to method | |
4743 | names. */ | |
4744 | if (die->tag == DW_TAG_subprogram) | |
4745 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
4746 | 0, 0); | |
4747 | } | |
4748 | else if (cu->language == language_cplus) | |
4749 | { | |
4750 | if (TYPE_NFIELDS (type) > 0 | |
4751 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
4752 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)))) | |
4753 | fputs_unfiltered (" const", buf); | |
4754 | } | |
4755 | } | |
4756 | ||
4757 | name = ui_file_obsavestring (buf, &cu->objfile->objfile_obstack, | |
4758 | &length); | |
4759 | ui_file_delete (buf); | |
4760 | ||
4761 | if (cu->language == language_cplus) | |
4762 | { | |
4763 | char *cname | |
4764 | = dwarf2_canonicalize_name (name, cu, | |
4765 | &cu->objfile->objfile_obstack); | |
9a619af0 | 4766 | |
94af9270 KS |
4767 | if (cname != NULL) |
4768 | name = cname; | |
4769 | } | |
4770 | } | |
4771 | } | |
4772 | ||
4773 | return name; | |
4774 | } | |
4775 | ||
0114d602 DJ |
4776 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
4777 | If scope qualifiers are appropriate they will be added. The result | |
4778 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
4779 | not have a name. NAME may either be from a previous call to |
4780 | dwarf2_name or NULL. | |
4781 | ||
4782 | The output string will be canonicalized (if C++/Java). */ | |
0114d602 DJ |
4783 | |
4784 | static const char * | |
94af9270 | 4785 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 4786 | { |
94af9270 KS |
4787 | return dwarf2_compute_name (name, die, cu, 0); |
4788 | } | |
0114d602 | 4789 | |
94af9270 KS |
4790 | /* Construct a physname for the given DIE in CU. NAME may either be |
4791 | from a previous call to dwarf2_name or NULL. The result will be | |
4792 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
4793 | name. | |
0114d602 | 4794 | |
94af9270 | 4795 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 4796 | |
94af9270 KS |
4797 | static const char * |
4798 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
4799 | { | |
4800 | return dwarf2_compute_name (name, die, cu, 1); | |
0114d602 DJ |
4801 | } |
4802 | ||
27aa8d6a SW |
4803 | /* Read the import statement specified by the given die and record it. */ |
4804 | ||
4805 | static void | |
4806 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
4807 | { | |
4808 | struct attribute *import_attr; | |
4809 | struct die_info *imported_die; | |
de4affc9 | 4810 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 4811 | const char *imported_name; |
794684b6 | 4812 | const char *imported_name_prefix; |
13387711 SW |
4813 | const char *canonical_name; |
4814 | const char *import_alias; | |
4815 | const char *imported_declaration = NULL; | |
794684b6 | 4816 | const char *import_prefix; |
13387711 SW |
4817 | |
4818 | char *temp; | |
27aa8d6a SW |
4819 | |
4820 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
4821 | if (import_attr == NULL) | |
4822 | { | |
4823 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
4824 | dwarf_tag_name (die->tag)); | |
4825 | return; | |
4826 | } | |
4827 | ||
de4affc9 CC |
4828 | imported_cu = cu; |
4829 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
4830 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
4831 | if (imported_name == NULL) |
4832 | { | |
4833 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
4834 | ||
4835 | The import in the following code: | |
4836 | namespace A | |
4837 | { | |
4838 | typedef int B; | |
4839 | } | |
4840 | ||
4841 | int main () | |
4842 | { | |
4843 | using A::B; | |
4844 | B b; | |
4845 | return b; | |
4846 | } | |
4847 | ||
4848 | ... | |
4849 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
4850 | <52> DW_AT_decl_file : 1 | |
4851 | <53> DW_AT_decl_line : 6 | |
4852 | <54> DW_AT_import : <0x75> | |
4853 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
4854 | <59> DW_AT_name : B | |
4855 | <5b> DW_AT_decl_file : 1 | |
4856 | <5c> DW_AT_decl_line : 2 | |
4857 | <5d> DW_AT_type : <0x6e> | |
4858 | ... | |
4859 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
4860 | <76> DW_AT_byte_size : 4 | |
4861 | <77> DW_AT_encoding : 5 (signed) | |
4862 | ||
4863 | imports the wrong die ( 0x75 instead of 0x58 ). | |
4864 | This case will be ignored until the gcc bug is fixed. */ | |
4865 | return; | |
4866 | } | |
4867 | ||
82856980 SW |
4868 | /* Figure out the local name after import. */ |
4869 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 4870 | |
794684b6 SW |
4871 | /* Figure out where the statement is being imported to. */ |
4872 | import_prefix = determine_prefix (die, cu); | |
4873 | ||
4874 | /* Figure out what the scope of the imported die is and prepend it | |
4875 | to the name of the imported die. */ | |
de4affc9 | 4876 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 4877 | |
f55ee35c JK |
4878 | if (imported_die->tag != DW_TAG_namespace |
4879 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 4880 | { |
13387711 SW |
4881 | imported_declaration = imported_name; |
4882 | canonical_name = imported_name_prefix; | |
794684b6 | 4883 | } |
13387711 | 4884 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 4885 | { |
13387711 SW |
4886 | temp = alloca (strlen (imported_name_prefix) |
4887 | + 2 + strlen (imported_name) + 1); | |
4888 | strcpy (temp, imported_name_prefix); | |
4889 | strcat (temp, "::"); | |
4890 | strcat (temp, imported_name); | |
4891 | canonical_name = temp; | |
794684b6 | 4892 | } |
13387711 SW |
4893 | else |
4894 | canonical_name = imported_name; | |
794684b6 | 4895 | |
c0cc3a76 SW |
4896 | cp_add_using_directive (import_prefix, |
4897 | canonical_name, | |
4898 | import_alias, | |
13387711 | 4899 | imported_declaration, |
c0cc3a76 | 4900 | &cu->objfile->objfile_obstack); |
27aa8d6a SW |
4901 | } |
4902 | ||
5fb290d7 | 4903 | static void |
e142c38c | 4904 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 4905 | { |
e142c38c | 4906 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
4907 | } |
4908 | ||
cb1df416 DJ |
4909 | static void |
4910 | free_cu_line_header (void *arg) | |
4911 | { | |
4912 | struct dwarf2_cu *cu = arg; | |
4913 | ||
4914 | free_line_header (cu->line_header); | |
4915 | cu->line_header = NULL; | |
4916 | } | |
4917 | ||
9291a0cd TT |
4918 | static void |
4919 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
4920 | char **name, char **comp_dir) | |
4921 | { | |
4922 | struct attribute *attr; | |
4923 | ||
4924 | *name = NULL; | |
4925 | *comp_dir = NULL; | |
4926 | ||
4927 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
4928 | is not a source language identifier. */ | |
4929 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
4930 | if (attr) | |
4931 | { | |
4932 | *name = DW_STRING (attr); | |
4933 | } | |
4934 | ||
4935 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
4936 | if (attr) | |
4937 | *comp_dir = DW_STRING (attr); | |
4938 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
4939 | { | |
4940 | *comp_dir = ldirname (*name); | |
4941 | if (*comp_dir != NULL) | |
4942 | make_cleanup (xfree, *comp_dir); | |
4943 | } | |
4944 | if (*comp_dir != NULL) | |
4945 | { | |
4946 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
4947 | directory, get rid of it. */ | |
4948 | char *cp = strchr (*comp_dir, ':'); | |
4949 | ||
4950 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
4951 | *comp_dir = cp + 1; | |
4952 | } | |
4953 | ||
4954 | if (*name == NULL) | |
4955 | *name = "<unknown>"; | |
4956 | } | |
4957 | ||
c906108c | 4958 | static void |
e7c27a73 | 4959 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4960 | { |
e7c27a73 | 4961 | struct objfile *objfile = cu->objfile; |
debd256d | 4962 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 4963 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
4964 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
4965 | struct attribute *attr; | |
e1024ff1 | 4966 | char *name = NULL; |
c906108c SS |
4967 | char *comp_dir = NULL; |
4968 | struct die_info *child_die; | |
4969 | bfd *abfd = objfile->obfd; | |
debd256d | 4970 | struct line_header *line_header = 0; |
e142c38c | 4971 | CORE_ADDR baseaddr; |
6e70227d | 4972 | |
e142c38c | 4973 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 4974 | |
fae299cd | 4975 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
4976 | |
4977 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
4978 | from finish_block. */ | |
2acceee2 | 4979 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
4980 | lowpc = highpc; |
4981 | lowpc += baseaddr; | |
4982 | highpc += baseaddr; | |
4983 | ||
9291a0cd | 4984 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 4985 | |
e142c38c | 4986 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
4987 | if (attr) |
4988 | { | |
e142c38c | 4989 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
4990 | } |
4991 | ||
b0f35d58 | 4992 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
6e70227d | 4993 | if (attr) |
b0f35d58 | 4994 | cu->producer = DW_STRING (attr); |
303b6f5d | 4995 | |
c906108c SS |
4996 | /* We assume that we're processing GCC output. */ |
4997 | processing_gcc_compilation = 2; | |
c906108c | 4998 | |
df8a16a1 DJ |
4999 | processing_has_namespace_info = 0; |
5000 | ||
c906108c SS |
5001 | start_symtab (name, comp_dir, lowpc); |
5002 | record_debugformat ("DWARF 2"); | |
303b6f5d | 5003 | record_producer (cu->producer); |
c906108c | 5004 | |
e142c38c | 5005 | initialize_cu_func_list (cu); |
c906108c | 5006 | |
cb1df416 DJ |
5007 | /* Decode line number information if present. We do this before |
5008 | processing child DIEs, so that the line header table is available | |
5009 | for DW_AT_decl_file. */ | |
e142c38c | 5010 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
5011 | if (attr) |
5012 | { | |
debd256d | 5013 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 5014 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
5015 | if (line_header) |
5016 | { | |
cb1df416 DJ |
5017 | cu->line_header = line_header; |
5018 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 5019 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 5020 | } |
5fb290d7 | 5021 | } |
debd256d | 5022 | |
cb1df416 DJ |
5023 | /* Process all dies in compilation unit. */ |
5024 | if (die->child != NULL) | |
5025 | { | |
5026 | child_die = die->child; | |
5027 | while (child_die && child_die->tag) | |
5028 | { | |
5029 | process_die (child_die, cu); | |
5030 | child_die = sibling_die (child_die); | |
5031 | } | |
5032 | } | |
5033 | ||
2e276125 JB |
5034 | /* Decode macro information, if present. Dwarf 2 macro information |
5035 | refers to information in the line number info statement program | |
5036 | header, so we can only read it if we've read the header | |
5037 | successfully. */ | |
e142c38c | 5038 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 5039 | if (attr && line_header) |
2e276125 JB |
5040 | { |
5041 | unsigned int macro_offset = DW_UNSND (attr); | |
9a619af0 | 5042 | |
2e276125 | 5043 | dwarf_decode_macros (line_header, macro_offset, |
e7c27a73 | 5044 | comp_dir, abfd, cu); |
2e276125 | 5045 | } |
debd256d | 5046 | do_cleanups (back_to); |
5fb290d7 DJ |
5047 | } |
5048 | ||
348e048f DE |
5049 | /* For TUs we want to skip the first top level sibling if it's not the |
5050 | actual type being defined by this TU. In this case the first top | |
5051 | level sibling is there to provide context only. */ | |
5052 | ||
5053 | static void | |
5054 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
5055 | { | |
5056 | struct objfile *objfile = cu->objfile; | |
5057 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
5058 | CORE_ADDR lowpc; | |
5059 | struct attribute *attr; | |
5060 | char *name = NULL; | |
5061 | char *comp_dir = NULL; | |
5062 | struct die_info *child_die; | |
5063 | bfd *abfd = objfile->obfd; | |
348e048f DE |
5064 | |
5065 | /* start_symtab needs a low pc, but we don't really have one. | |
5066 | Do what read_file_scope would do in the absence of such info. */ | |
5067 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
5068 | ||
5069 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
5070 | is not a source language identifier. */ | |
5071 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
5072 | if (attr) | |
5073 | name = DW_STRING (attr); | |
5074 | ||
5075 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
5076 | if (attr) | |
5077 | comp_dir = DW_STRING (attr); | |
5078 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
5079 | { | |
5080 | comp_dir = ldirname (name); | |
5081 | if (comp_dir != NULL) | |
5082 | make_cleanup (xfree, comp_dir); | |
5083 | } | |
5084 | ||
5085 | if (name == NULL) | |
5086 | name = "<unknown>"; | |
5087 | ||
5088 | attr = dwarf2_attr (die, DW_AT_language, cu); | |
5089 | if (attr) | |
5090 | set_cu_language (DW_UNSND (attr), cu); | |
5091 | ||
5092 | /* This isn't technically needed today. It is done for symmetry | |
5093 | with read_file_scope. */ | |
5094 | attr = dwarf2_attr (die, DW_AT_producer, cu); | |
6e70227d | 5095 | if (attr) |
348e048f DE |
5096 | cu->producer = DW_STRING (attr); |
5097 | ||
5098 | /* We assume that we're processing GCC output. */ | |
5099 | processing_gcc_compilation = 2; | |
5100 | ||
5101 | processing_has_namespace_info = 0; | |
5102 | ||
5103 | start_symtab (name, comp_dir, lowpc); | |
5104 | record_debugformat ("DWARF 2"); | |
5105 | record_producer (cu->producer); | |
5106 | ||
5107 | /* Process the dies in the type unit. */ | |
5108 | if (die->child == NULL) | |
5109 | { | |
5110 | dump_die_for_error (die); | |
5111 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
5112 | bfd_get_filename (abfd)); | |
5113 | } | |
5114 | ||
5115 | child_die = die->child; | |
5116 | ||
5117 | while (child_die && child_die->tag) | |
5118 | { | |
5119 | process_die (child_die, cu); | |
5120 | ||
5121 | child_die = sibling_die (child_die); | |
5122 | } | |
5123 | ||
5124 | do_cleanups (back_to); | |
5125 | } | |
5126 | ||
5fb290d7 | 5127 | static void |
e142c38c DJ |
5128 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
5129 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
5130 | { |
5131 | struct function_range *thisfn; | |
5132 | ||
5133 | thisfn = (struct function_range *) | |
7b5a2f43 | 5134 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
5135 | thisfn->name = name; |
5136 | thisfn->lowpc = lowpc; | |
5137 | thisfn->highpc = highpc; | |
5138 | thisfn->seen_line = 0; | |
5139 | thisfn->next = NULL; | |
5140 | ||
e142c38c DJ |
5141 | if (cu->last_fn == NULL) |
5142 | cu->first_fn = thisfn; | |
5fb290d7 | 5143 | else |
e142c38c | 5144 | cu->last_fn->next = thisfn; |
5fb290d7 | 5145 | |
e142c38c | 5146 | cu->last_fn = thisfn; |
c906108c SS |
5147 | } |
5148 | ||
d389af10 JK |
5149 | /* qsort helper for inherit_abstract_dies. */ |
5150 | ||
5151 | static int | |
5152 | unsigned_int_compar (const void *ap, const void *bp) | |
5153 | { | |
5154 | unsigned int a = *(unsigned int *) ap; | |
5155 | unsigned int b = *(unsigned int *) bp; | |
5156 | ||
5157 | return (a > b) - (b > a); | |
5158 | } | |
5159 | ||
5160 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
5161 | Inherit only the children of the DW_AT_abstract_origin DIE not being already | |
5162 | referenced by DW_AT_abstract_origin from the children of the current DIE. */ | |
5163 | ||
5164 | static void | |
5165 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
5166 | { | |
5167 | struct die_info *child_die; | |
5168 | unsigned die_children_count; | |
5169 | /* CU offsets which were referenced by children of the current DIE. */ | |
5170 | unsigned *offsets; | |
5171 | unsigned *offsets_end, *offsetp; | |
5172 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ | |
5173 | struct die_info *origin_die; | |
5174 | /* Iterator of the ORIGIN_DIE children. */ | |
5175 | struct die_info *origin_child_die; | |
5176 | struct cleanup *cleanups; | |
5177 | struct attribute *attr; | |
5178 | ||
5179 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
5180 | if (!attr) | |
5181 | return; | |
5182 | ||
5183 | origin_die = follow_die_ref (die, attr, &cu); | |
edb3359d DJ |
5184 | if (die->tag != origin_die->tag |
5185 | && !(die->tag == DW_TAG_inlined_subroutine | |
5186 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5187 | complaint (&symfile_complaints, |
5188 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
5189 | die->offset, origin_die->offset); | |
5190 | ||
5191 | child_die = die->child; | |
5192 | die_children_count = 0; | |
5193 | while (child_die && child_die->tag) | |
5194 | { | |
5195 | child_die = sibling_die (child_die); | |
5196 | die_children_count++; | |
5197 | } | |
5198 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
5199 | cleanups = make_cleanup (xfree, offsets); | |
5200 | ||
5201 | offsets_end = offsets; | |
5202 | child_die = die->child; | |
5203 | while (child_die && child_die->tag) | |
5204 | { | |
c38f313d DJ |
5205 | /* For each CHILD_DIE, find the corresponding child of |
5206 | ORIGIN_DIE. If there is more than one layer of | |
5207 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
5208 | but GCC versions at least through 4.4 generate this (GCC PR | |
5209 | 40573). */ | |
5210 | struct die_info *child_origin_die = child_die; | |
9a619af0 | 5211 | |
c38f313d DJ |
5212 | while (1) |
5213 | { | |
5214 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, cu); | |
5215 | if (attr == NULL) | |
5216 | break; | |
5217 | child_origin_die = follow_die_ref (child_origin_die, attr, &cu); | |
5218 | } | |
5219 | ||
d389af10 JK |
5220 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
5221 | counterpart may exist. */ | |
c38f313d | 5222 | if (child_origin_die != child_die) |
d389af10 | 5223 | { |
edb3359d DJ |
5224 | if (child_die->tag != child_origin_die->tag |
5225 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
5226 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
5227 | complaint (&symfile_complaints, |
5228 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5229 | "different tags"), child_die->offset, | |
5230 | child_origin_die->offset); | |
c38f313d DJ |
5231 | if (child_origin_die->parent != origin_die) |
5232 | complaint (&symfile_complaints, | |
5233 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
5234 | "different parents"), child_die->offset, | |
5235 | child_origin_die->offset); | |
5236 | else | |
5237 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
5238 | } |
5239 | child_die = sibling_die (child_die); | |
5240 | } | |
5241 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
5242 | unsigned_int_compar); | |
5243 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
5244 | if (offsetp[-1] == *offsetp) | |
5245 | complaint (&symfile_complaints, _("Multiple children of DIE 0x%x refer " | |
5246 | "to DIE 0x%x as their abstract origin"), | |
5247 | die->offset, *offsetp); | |
5248 | ||
5249 | offsetp = offsets; | |
5250 | origin_child_die = origin_die->child; | |
5251 | while (origin_child_die && origin_child_die->tag) | |
5252 | { | |
5253 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
5254 | while (offsetp < offsets_end && *offsetp < origin_child_die->offset) | |
5255 | offsetp++; | |
5256 | if (offsetp >= offsets_end || *offsetp > origin_child_die->offset) | |
5257 | { | |
5258 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
5259 | process_die (origin_child_die, cu); | |
5260 | } | |
5261 | origin_child_die = sibling_die (origin_child_die); | |
5262 | } | |
5263 | ||
5264 | do_cleanups (cleanups); | |
5265 | } | |
5266 | ||
c906108c | 5267 | static void |
e7c27a73 | 5268 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5269 | { |
e7c27a73 | 5270 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5271 | struct context_stack *new; |
c906108c SS |
5272 | CORE_ADDR lowpc; |
5273 | CORE_ADDR highpc; | |
5274 | struct die_info *child_die; | |
edb3359d | 5275 | struct attribute *attr, *call_line, *call_file; |
c906108c | 5276 | char *name; |
e142c38c | 5277 | CORE_ADDR baseaddr; |
801e3a5b | 5278 | struct block *block; |
edb3359d | 5279 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
34eaf542 TT |
5280 | VEC (symbolp) *template_args = NULL; |
5281 | struct template_symbol *templ_func = NULL; | |
edb3359d DJ |
5282 | |
5283 | if (inlined_func) | |
5284 | { | |
5285 | /* If we do not have call site information, we can't show the | |
5286 | caller of this inlined function. That's too confusing, so | |
5287 | only use the scope for local variables. */ | |
5288 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
5289 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
5290 | if (call_line == NULL || call_file == NULL) | |
5291 | { | |
5292 | read_lexical_block_scope (die, cu); | |
5293 | return; | |
5294 | } | |
5295 | } | |
c906108c | 5296 | |
e142c38c DJ |
5297 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
5298 | ||
94af9270 | 5299 | name = dwarf2_name (die, cu); |
c906108c | 5300 | |
e8d05480 JB |
5301 | /* Ignore functions with missing or empty names. These are actually |
5302 | illegal according to the DWARF standard. */ | |
5303 | if (name == NULL) | |
5304 | { | |
5305 | complaint (&symfile_complaints, | |
5306 | _("missing name for subprogram DIE at %d"), die->offset); | |
5307 | return; | |
5308 | } | |
5309 | ||
5310 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
5311 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
5312 | { | |
ae4d0c03 PM |
5313 | attr = dwarf2_attr (die, DW_AT_external, cu); |
5314 | if (!attr || !DW_UNSND (attr)) | |
5315 | complaint (&symfile_complaints, | |
5316 | _("cannot get low and high bounds for subprogram DIE at %d"), | |
5317 | die->offset); | |
e8d05480 JB |
5318 | return; |
5319 | } | |
c906108c SS |
5320 | |
5321 | lowpc += baseaddr; | |
5322 | highpc += baseaddr; | |
5323 | ||
5fb290d7 | 5324 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 5325 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 5326 | |
34eaf542 TT |
5327 | /* If we have any template arguments, then we must allocate a |
5328 | different sort of symbol. */ | |
5329 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
5330 | { | |
5331 | if (child_die->tag == DW_TAG_template_type_param | |
5332 | || child_die->tag == DW_TAG_template_value_param) | |
5333 | { | |
5334 | templ_func = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
5335 | struct template_symbol); | |
5336 | templ_func->base.is_cplus_template_function = 1; | |
5337 | break; | |
5338 | } | |
5339 | } | |
5340 | ||
c906108c | 5341 | new = push_context (0, lowpc); |
34eaf542 TT |
5342 | new->name = new_symbol_full (die, read_type_die (die, cu), cu, |
5343 | (struct symbol *) templ_func); | |
4c2df51b | 5344 | |
4cecd739 DJ |
5345 | /* If there is a location expression for DW_AT_frame_base, record |
5346 | it. */ | |
e142c38c | 5347 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 5348 | if (attr) |
c034e007 AC |
5349 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
5350 | expression is being recorded directly in the function's symbol | |
5351 | and not in a separate frame-base object. I guess this hack is | |
5352 | to avoid adding some sort of frame-base adjunct/annex to the | |
5353 | function's symbol :-(. The problem with doing this is that it | |
5354 | results in a function symbol with a location expression that | |
5355 | has nothing to do with the location of the function, ouch! The | |
5356 | relationship should be: a function's symbol has-a frame base; a | |
5357 | frame-base has-a location expression. */ | |
e7c27a73 | 5358 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 5359 | |
e142c38c | 5360 | cu->list_in_scope = &local_symbols; |
c906108c | 5361 | |
639d11d3 | 5362 | if (die->child != NULL) |
c906108c | 5363 | { |
639d11d3 | 5364 | child_die = die->child; |
c906108c SS |
5365 | while (child_die && child_die->tag) |
5366 | { | |
34eaf542 TT |
5367 | if (child_die->tag == DW_TAG_template_type_param |
5368 | || child_die->tag == DW_TAG_template_value_param) | |
5369 | { | |
5370 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
5371 | ||
5372 | VEC_safe_push (symbolp, template_args, arg); | |
5373 | } | |
5374 | else | |
5375 | process_die (child_die, cu); | |
c906108c SS |
5376 | child_die = sibling_die (child_die); |
5377 | } | |
5378 | } | |
5379 | ||
d389af10 JK |
5380 | inherit_abstract_dies (die, cu); |
5381 | ||
4a811a97 UW |
5382 | /* If we have a DW_AT_specification, we might need to import using |
5383 | directives from the context of the specification DIE. See the | |
5384 | comment in determine_prefix. */ | |
5385 | if (cu->language == language_cplus | |
5386 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
5387 | { | |
5388 | struct dwarf2_cu *spec_cu = cu; | |
5389 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
5390 | ||
5391 | while (spec_die) | |
5392 | { | |
5393 | child_die = spec_die->child; | |
5394 | while (child_die && child_die->tag) | |
5395 | { | |
5396 | if (child_die->tag == DW_TAG_imported_module) | |
5397 | process_die (child_die, spec_cu); | |
5398 | child_die = sibling_die (child_die); | |
5399 | } | |
5400 | ||
5401 | /* In some cases, GCC generates specification DIEs that | |
5402 | themselves contain DW_AT_specification attributes. */ | |
5403 | spec_die = die_specification (spec_die, &spec_cu); | |
5404 | } | |
5405 | } | |
5406 | ||
c906108c SS |
5407 | new = pop_context (); |
5408 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
5409 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
5410 | lowpc, highpc, objfile); | |
5411 | ||
df8a16a1 | 5412 | /* For C++, set the block's scope. */ |
f55ee35c | 5413 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 5414 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 5415 | determine_prefix (die, cu), |
df8a16a1 DJ |
5416 | processing_has_namespace_info); |
5417 | ||
801e3a5b JB |
5418 | /* If we have address ranges, record them. */ |
5419 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 5420 | |
34eaf542 TT |
5421 | /* Attach template arguments to function. */ |
5422 | if (! VEC_empty (symbolp, template_args)) | |
5423 | { | |
5424 | gdb_assert (templ_func != NULL); | |
5425 | ||
5426 | templ_func->n_template_arguments = VEC_length (symbolp, template_args); | |
5427 | templ_func->template_arguments | |
5428 | = obstack_alloc (&objfile->objfile_obstack, | |
5429 | (templ_func->n_template_arguments | |
5430 | * sizeof (struct symbol *))); | |
5431 | memcpy (templ_func->template_arguments, | |
5432 | VEC_address (symbolp, template_args), | |
5433 | (templ_func->n_template_arguments * sizeof (struct symbol *))); | |
5434 | VEC_free (symbolp, template_args); | |
5435 | } | |
5436 | ||
208d8187 JB |
5437 | /* In C++, we can have functions nested inside functions (e.g., when |
5438 | a function declares a class that has methods). This means that | |
5439 | when we finish processing a function scope, we may need to go | |
5440 | back to building a containing block's symbol lists. */ | |
5441 | local_symbols = new->locals; | |
5442 | param_symbols = new->params; | |
27aa8d6a | 5443 | using_directives = new->using_directives; |
208d8187 | 5444 | |
921e78cf JB |
5445 | /* If we've finished processing a top-level function, subsequent |
5446 | symbols go in the file symbol list. */ | |
5447 | if (outermost_context_p ()) | |
e142c38c | 5448 | cu->list_in_scope = &file_symbols; |
c906108c SS |
5449 | } |
5450 | ||
5451 | /* Process all the DIES contained within a lexical block scope. Start | |
5452 | a new scope, process the dies, and then close the scope. */ | |
5453 | ||
5454 | static void | |
e7c27a73 | 5455 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5456 | { |
e7c27a73 | 5457 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5458 | struct context_stack *new; |
c906108c SS |
5459 | CORE_ADDR lowpc, highpc; |
5460 | struct die_info *child_die; | |
e142c38c DJ |
5461 | CORE_ADDR baseaddr; |
5462 | ||
5463 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
5464 | |
5465 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
5466 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
5467 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 5468 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 5469 | describe ranges. */ |
d85a05f0 | 5470 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
5471 | return; |
5472 | lowpc += baseaddr; | |
5473 | highpc += baseaddr; | |
5474 | ||
5475 | push_context (0, lowpc); | |
639d11d3 | 5476 | if (die->child != NULL) |
c906108c | 5477 | { |
639d11d3 | 5478 | child_die = die->child; |
c906108c SS |
5479 | while (child_die && child_die->tag) |
5480 | { | |
e7c27a73 | 5481 | process_die (child_die, cu); |
c906108c SS |
5482 | child_die = sibling_die (child_die); |
5483 | } | |
5484 | } | |
5485 | new = pop_context (); | |
5486 | ||
8540c487 | 5487 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 5488 | { |
801e3a5b JB |
5489 | struct block *block |
5490 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
5491 | highpc, objfile); | |
5492 | ||
5493 | /* Note that recording ranges after traversing children, as we | |
5494 | do here, means that recording a parent's ranges entails | |
5495 | walking across all its children's ranges as they appear in | |
5496 | the address map, which is quadratic behavior. | |
5497 | ||
5498 | It would be nicer to record the parent's ranges before | |
5499 | traversing its children, simply overriding whatever you find | |
5500 | there. But since we don't even decide whether to create a | |
5501 | block until after we've traversed its children, that's hard | |
5502 | to do. */ | |
5503 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
5504 | } |
5505 | local_symbols = new->locals; | |
27aa8d6a | 5506 | using_directives = new->using_directives; |
c906108c SS |
5507 | } |
5508 | ||
43039443 | 5509 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
5510 | Return 1 if the attributes are present and valid, otherwise, return 0. |
5511 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
5512 | |
5513 | static int | |
5514 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
5515 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
5516 | struct partial_symtab *ranges_pst) | |
43039443 JK |
5517 | { |
5518 | struct objfile *objfile = cu->objfile; | |
5519 | struct comp_unit_head *cu_header = &cu->header; | |
5520 | bfd *obfd = objfile->obfd; | |
5521 | unsigned int addr_size = cu_header->addr_size; | |
5522 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
5523 | /* Base address selection entry. */ | |
5524 | CORE_ADDR base; | |
5525 | int found_base; | |
5526 | unsigned int dummy; | |
5527 | gdb_byte *buffer; | |
5528 | CORE_ADDR marker; | |
5529 | int low_set; | |
5530 | CORE_ADDR low = 0; | |
5531 | CORE_ADDR high = 0; | |
ff013f42 | 5532 | CORE_ADDR baseaddr; |
43039443 | 5533 | |
d00adf39 DE |
5534 | found_base = cu->base_known; |
5535 | base = cu->base_address; | |
43039443 | 5536 | |
be391dca | 5537 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 5538 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
5539 | { |
5540 | complaint (&symfile_complaints, | |
5541 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
5542 | offset); | |
5543 | return 0; | |
5544 | } | |
dce234bc | 5545 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
5546 | |
5547 | /* Read in the largest possible address. */ | |
5548 | marker = read_address (obfd, buffer, cu, &dummy); | |
5549 | if ((marker & mask) == mask) | |
5550 | { | |
5551 | /* If we found the largest possible address, then | |
5552 | read the base address. */ | |
5553 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5554 | buffer += 2 * addr_size; | |
5555 | offset += 2 * addr_size; | |
5556 | found_base = 1; | |
5557 | } | |
5558 | ||
5559 | low_set = 0; | |
5560 | ||
e7030f15 | 5561 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 5562 | |
43039443 JK |
5563 | while (1) |
5564 | { | |
5565 | CORE_ADDR range_beginning, range_end; | |
5566 | ||
5567 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
5568 | buffer += addr_size; | |
5569 | range_end = read_address (obfd, buffer, cu, &dummy); | |
5570 | buffer += addr_size; | |
5571 | offset += 2 * addr_size; | |
5572 | ||
5573 | /* An end of list marker is a pair of zero addresses. */ | |
5574 | if (range_beginning == 0 && range_end == 0) | |
5575 | /* Found the end of list entry. */ | |
5576 | break; | |
5577 | ||
5578 | /* Each base address selection entry is a pair of 2 values. | |
5579 | The first is the largest possible address, the second is | |
5580 | the base address. Check for a base address here. */ | |
5581 | if ((range_beginning & mask) == mask) | |
5582 | { | |
5583 | /* If we found the largest possible address, then | |
5584 | read the base address. */ | |
5585 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5586 | found_base = 1; | |
5587 | continue; | |
5588 | } | |
5589 | ||
5590 | if (!found_base) | |
5591 | { | |
5592 | /* We have no valid base address for the ranges | |
5593 | data. */ | |
5594 | complaint (&symfile_complaints, | |
5595 | _("Invalid .debug_ranges data (no base address)")); | |
5596 | return 0; | |
5597 | } | |
5598 | ||
5599 | range_beginning += base; | |
5600 | range_end += base; | |
5601 | ||
ff013f42 JK |
5602 | if (ranges_pst != NULL && range_beginning < range_end) |
5603 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
5604 | range_beginning + baseaddr, range_end - 1 + baseaddr, | |
5605 | ranges_pst); | |
5606 | ||
43039443 JK |
5607 | /* FIXME: This is recording everything as a low-high |
5608 | segment of consecutive addresses. We should have a | |
5609 | data structure for discontiguous block ranges | |
5610 | instead. */ | |
5611 | if (! low_set) | |
5612 | { | |
5613 | low = range_beginning; | |
5614 | high = range_end; | |
5615 | low_set = 1; | |
5616 | } | |
5617 | else | |
5618 | { | |
5619 | if (range_beginning < low) | |
5620 | low = range_beginning; | |
5621 | if (range_end > high) | |
5622 | high = range_end; | |
5623 | } | |
5624 | } | |
5625 | ||
5626 | if (! low_set) | |
5627 | /* If the first entry is an end-of-list marker, the range | |
5628 | describes an empty scope, i.e. no instructions. */ | |
5629 | return 0; | |
5630 | ||
5631 | if (low_return) | |
5632 | *low_return = low; | |
5633 | if (high_return) | |
5634 | *high_return = high; | |
5635 | return 1; | |
5636 | } | |
5637 | ||
af34e669 DJ |
5638 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
5639 | are present and valid, otherwise, return 0. Return -1 if the range is | |
5640 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 5641 | static int |
af34e669 | 5642 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
5643 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
5644 | struct partial_symtab *pst) | |
c906108c SS |
5645 | { |
5646 | struct attribute *attr; | |
af34e669 DJ |
5647 | CORE_ADDR low = 0; |
5648 | CORE_ADDR high = 0; | |
5649 | int ret = 0; | |
c906108c | 5650 | |
e142c38c | 5651 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 5652 | if (attr) |
af34e669 DJ |
5653 | { |
5654 | high = DW_ADDR (attr); | |
e142c38c | 5655 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
5656 | if (attr) |
5657 | low = DW_ADDR (attr); | |
5658 | else | |
5659 | /* Found high w/o low attribute. */ | |
5660 | return 0; | |
5661 | ||
5662 | /* Found consecutive range of addresses. */ | |
5663 | ret = 1; | |
5664 | } | |
c906108c | 5665 | else |
af34e669 | 5666 | { |
e142c38c | 5667 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
5668 | if (attr != NULL) |
5669 | { | |
af34e669 | 5670 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 5671 | .debug_ranges section. */ |
d85a05f0 | 5672 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 5673 | return 0; |
43039443 | 5674 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
5675 | ret = -1; |
5676 | } | |
5677 | } | |
c906108c SS |
5678 | |
5679 | if (high < low) | |
5680 | return 0; | |
5681 | ||
5682 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
5683 | eliminate duplicate copies of functions and vtables and such. | |
5684 | The linker will arbitrarily choose one and discard the others. | |
5685 | The AT_*_pc values for such functions refer to local labels in | |
5686 | these sections. If the section from that file was discarded, the | |
5687 | labels are not in the output, so the relocs get a value of 0. | |
5688 | If this is a discarded function, mark the pc bounds as invalid, | |
5689 | so that GDB will ignore it. */ | |
72dca2f5 | 5690 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
5691 | return 0; |
5692 | ||
5693 | *lowpc = low; | |
5694 | *highpc = high; | |
af34e669 | 5695 | return ret; |
c906108c SS |
5696 | } |
5697 | ||
b084d499 JB |
5698 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
5699 | its low and high PC addresses. Do nothing if these addresses could not | |
5700 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
5701 | and HIGHPC to the high address if greater than HIGHPC. */ | |
5702 | ||
5703 | static void | |
5704 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
5705 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5706 | struct dwarf2_cu *cu) | |
5707 | { | |
5708 | CORE_ADDR low, high; | |
5709 | struct die_info *child = die->child; | |
5710 | ||
d85a05f0 | 5711 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
5712 | { |
5713 | *lowpc = min (*lowpc, low); | |
5714 | *highpc = max (*highpc, high); | |
5715 | } | |
5716 | ||
5717 | /* If the language does not allow nested subprograms (either inside | |
5718 | subprograms or lexical blocks), we're done. */ | |
5719 | if (cu->language != language_ada) | |
5720 | return; | |
6e70227d | 5721 | |
b084d499 JB |
5722 | /* Check all the children of the given DIE. If it contains nested |
5723 | subprograms, then check their pc bounds. Likewise, we need to | |
5724 | check lexical blocks as well, as they may also contain subprogram | |
5725 | definitions. */ | |
5726 | while (child && child->tag) | |
5727 | { | |
5728 | if (child->tag == DW_TAG_subprogram | |
5729 | || child->tag == DW_TAG_lexical_block) | |
5730 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
5731 | child = sibling_die (child); | |
5732 | } | |
5733 | } | |
5734 | ||
fae299cd DC |
5735 | /* Get the low and high pc's represented by the scope DIE, and store |
5736 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
5737 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
5738 | ||
5739 | static void | |
5740 | get_scope_pc_bounds (struct die_info *die, | |
5741 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5742 | struct dwarf2_cu *cu) | |
5743 | { | |
5744 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
5745 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
5746 | CORE_ADDR current_low, current_high; | |
5747 | ||
d85a05f0 | 5748 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
5749 | { |
5750 | best_low = current_low; | |
5751 | best_high = current_high; | |
5752 | } | |
5753 | else | |
5754 | { | |
5755 | struct die_info *child = die->child; | |
5756 | ||
5757 | while (child && child->tag) | |
5758 | { | |
5759 | switch (child->tag) { | |
5760 | case DW_TAG_subprogram: | |
b084d499 | 5761 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
5762 | break; |
5763 | case DW_TAG_namespace: | |
f55ee35c | 5764 | case DW_TAG_module: |
fae299cd DC |
5765 | /* FIXME: carlton/2004-01-16: Should we do this for |
5766 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
5767 | that current GCC's always emit the DIEs corresponding | |
5768 | to definitions of methods of classes as children of a | |
5769 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
5770 | the DIEs giving the declarations, which could be | |
5771 | anywhere). But I don't see any reason why the | |
5772 | standards says that they have to be there. */ | |
5773 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
5774 | ||
5775 | if (current_low != ((CORE_ADDR) -1)) | |
5776 | { | |
5777 | best_low = min (best_low, current_low); | |
5778 | best_high = max (best_high, current_high); | |
5779 | } | |
5780 | break; | |
5781 | default: | |
5782 | /* Ignore. */ | |
5783 | break; | |
5784 | } | |
5785 | ||
5786 | child = sibling_die (child); | |
5787 | } | |
5788 | } | |
5789 | ||
5790 | *lowpc = best_low; | |
5791 | *highpc = best_high; | |
5792 | } | |
5793 | ||
801e3a5b JB |
5794 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
5795 | in DIE. */ | |
5796 | static void | |
5797 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
5798 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
5799 | { | |
5800 | struct attribute *attr; | |
5801 | ||
5802 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
5803 | if (attr) | |
5804 | { | |
5805 | CORE_ADDR high = DW_ADDR (attr); | |
9a619af0 | 5806 | |
801e3a5b JB |
5807 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
5808 | if (attr) | |
5809 | { | |
5810 | CORE_ADDR low = DW_ADDR (attr); | |
9a619af0 | 5811 | |
801e3a5b JB |
5812 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
5813 | } | |
5814 | } | |
5815 | ||
5816 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
5817 | if (attr) | |
5818 | { | |
5819 | bfd *obfd = cu->objfile->obfd; | |
5820 | ||
5821 | /* The value of the DW_AT_ranges attribute is the offset of the | |
5822 | address range list in the .debug_ranges section. */ | |
5823 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 5824 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
5825 | |
5826 | /* For some target architectures, but not others, the | |
5827 | read_address function sign-extends the addresses it returns. | |
5828 | To recognize base address selection entries, we need a | |
5829 | mask. */ | |
5830 | unsigned int addr_size = cu->header.addr_size; | |
5831 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
5832 | ||
5833 | /* The base address, to which the next pair is relative. Note | |
5834 | that this 'base' is a DWARF concept: most entries in a range | |
5835 | list are relative, to reduce the number of relocs against the | |
5836 | debugging information. This is separate from this function's | |
5837 | 'baseaddr' argument, which GDB uses to relocate debugging | |
5838 | information from a shared library based on the address at | |
5839 | which the library was loaded. */ | |
d00adf39 DE |
5840 | CORE_ADDR base = cu->base_address; |
5841 | int base_known = cu->base_known; | |
801e3a5b | 5842 | |
be391dca | 5843 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 5844 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
5845 | { |
5846 | complaint (&symfile_complaints, | |
5847 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
5848 | offset); | |
5849 | return; | |
5850 | } | |
5851 | ||
5852 | for (;;) | |
5853 | { | |
5854 | unsigned int bytes_read; | |
5855 | CORE_ADDR start, end; | |
5856 | ||
5857 | start = read_address (obfd, buffer, cu, &bytes_read); | |
5858 | buffer += bytes_read; | |
5859 | end = read_address (obfd, buffer, cu, &bytes_read); | |
5860 | buffer += bytes_read; | |
5861 | ||
5862 | /* Did we find the end of the range list? */ | |
5863 | if (start == 0 && end == 0) | |
5864 | break; | |
5865 | ||
5866 | /* Did we find a base address selection entry? */ | |
5867 | else if ((start & base_select_mask) == base_select_mask) | |
5868 | { | |
5869 | base = end; | |
5870 | base_known = 1; | |
5871 | } | |
5872 | ||
5873 | /* We found an ordinary address range. */ | |
5874 | else | |
5875 | { | |
5876 | if (!base_known) | |
5877 | { | |
5878 | complaint (&symfile_complaints, | |
5879 | _("Invalid .debug_ranges data (no base address)")); | |
5880 | return; | |
5881 | } | |
5882 | ||
6e70227d DE |
5883 | record_block_range (block, |
5884 | baseaddr + base + start, | |
801e3a5b JB |
5885 | baseaddr + base + end - 1); |
5886 | } | |
5887 | } | |
5888 | } | |
5889 | } | |
5890 | ||
c906108c SS |
5891 | /* Add an aggregate field to the field list. */ |
5892 | ||
5893 | static void | |
107d2387 | 5894 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 5895 | struct dwarf2_cu *cu) |
6e70227d | 5896 | { |
e7c27a73 | 5897 | struct objfile *objfile = cu->objfile; |
5e2b427d | 5898 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
5899 | struct nextfield *new_field; |
5900 | struct attribute *attr; | |
5901 | struct field *fp; | |
5902 | char *fieldname = ""; | |
5903 | ||
5904 | /* Allocate a new field list entry and link it in. */ | |
5905 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 5906 | make_cleanup (xfree, new_field); |
c906108c | 5907 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
5908 | |
5909 | if (die->tag == DW_TAG_inheritance) | |
5910 | { | |
5911 | new_field->next = fip->baseclasses; | |
5912 | fip->baseclasses = new_field; | |
5913 | } | |
5914 | else | |
5915 | { | |
5916 | new_field->next = fip->fields; | |
5917 | fip->fields = new_field; | |
5918 | } | |
c906108c SS |
5919 | fip->nfields++; |
5920 | ||
5921 | /* Handle accessibility and virtuality of field. | |
5922 | The default accessibility for members is public, the default | |
5923 | accessibility for inheritance is private. */ | |
5924 | if (die->tag != DW_TAG_inheritance) | |
5925 | new_field->accessibility = DW_ACCESS_public; | |
5926 | else | |
5927 | new_field->accessibility = DW_ACCESS_private; | |
5928 | new_field->virtuality = DW_VIRTUALITY_none; | |
5929 | ||
e142c38c | 5930 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
5931 | if (attr) |
5932 | new_field->accessibility = DW_UNSND (attr); | |
5933 | if (new_field->accessibility != DW_ACCESS_public) | |
5934 | fip->non_public_fields = 1; | |
e142c38c | 5935 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
5936 | if (attr) |
5937 | new_field->virtuality = DW_UNSND (attr); | |
5938 | ||
5939 | fp = &new_field->field; | |
a9a9bd0f | 5940 | |
e142c38c | 5941 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 5942 | { |
a9a9bd0f | 5943 | /* Data member other than a C++ static data member. */ |
6e70227d | 5944 | |
c906108c | 5945 | /* Get type of field. */ |
e7c27a73 | 5946 | fp->type = die_type (die, cu); |
c906108c | 5947 | |
d6a843b5 | 5948 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 5949 | |
c906108c | 5950 | /* Get bit size of field (zero if none). */ |
e142c38c | 5951 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
5952 | if (attr) |
5953 | { | |
5954 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
5955 | } | |
5956 | else | |
5957 | { | |
5958 | FIELD_BITSIZE (*fp) = 0; | |
5959 | } | |
5960 | ||
5961 | /* Get bit offset of field. */ | |
e142c38c | 5962 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
5963 | if (attr) |
5964 | { | |
d4b96c9a | 5965 | int byte_offset = 0; |
c6a0999f | 5966 | |
3690dd37 | 5967 | if (attr_form_is_section_offset (attr)) |
d4b96c9a | 5968 | dwarf2_complex_location_expr_complaint (); |
3690dd37 | 5969 | else if (attr_form_is_constant (attr)) |
c6a0999f | 5970 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
d4b96c9a | 5971 | else if (attr_form_is_block (attr)) |
c6a0999f | 5972 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
d4b96c9a JK |
5973 | else |
5974 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 5975 | |
d6a843b5 | 5976 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); |
c906108c | 5977 | } |
e142c38c | 5978 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
5979 | if (attr) |
5980 | { | |
5e2b427d | 5981 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
5982 | { |
5983 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
5984 | additional bit offset from the MSB of the containing |
5985 | anonymous object to the MSB of the field. We don't | |
5986 | have to do anything special since we don't need to | |
5987 | know the size of the anonymous object. */ | |
c906108c SS |
5988 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
5989 | } | |
5990 | else | |
5991 | { | |
5992 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
5993 | MSB of the anonymous object, subtract off the number of |
5994 | bits from the MSB of the field to the MSB of the | |
5995 | object, and then subtract off the number of bits of | |
5996 | the field itself. The result is the bit offset of | |
5997 | the LSB of the field. */ | |
c906108c SS |
5998 | int anonymous_size; |
5999 | int bit_offset = DW_UNSND (attr); | |
6000 | ||
e142c38c | 6001 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6002 | if (attr) |
6003 | { | |
6004 | /* The size of the anonymous object containing | |
6005 | the bit field is explicit, so use the | |
6006 | indicated size (in bytes). */ | |
6007 | anonymous_size = DW_UNSND (attr); | |
6008 | } | |
6009 | else | |
6010 | { | |
6011 | /* The size of the anonymous object containing | |
6012 | the bit field must be inferred from the type | |
6013 | attribute of the data member containing the | |
6014 | bit field. */ | |
6015 | anonymous_size = TYPE_LENGTH (fp->type); | |
6016 | } | |
6017 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
6018 | - bit_offset - FIELD_BITSIZE (*fp); | |
6019 | } | |
6020 | } | |
6021 | ||
6022 | /* Get name of field. */ | |
39cbfefa DJ |
6023 | fieldname = dwarf2_name (die, cu); |
6024 | if (fieldname == NULL) | |
6025 | fieldname = ""; | |
d8151005 DJ |
6026 | |
6027 | /* The name is already allocated along with this objfile, so we don't | |
6028 | need to duplicate it for the type. */ | |
6029 | fp->name = fieldname; | |
c906108c SS |
6030 | |
6031 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 6032 | pointer or virtual base class pointer) to private. */ |
e142c38c | 6033 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 6034 | { |
d48cc9dd | 6035 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
6036 | new_field->accessibility = DW_ACCESS_private; |
6037 | fip->non_public_fields = 1; | |
6038 | } | |
6039 | } | |
a9a9bd0f | 6040 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 6041 | { |
a9a9bd0f DC |
6042 | /* C++ static member. */ |
6043 | ||
6044 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
6045 | is a declaration, but all versions of G++ as of this writing | |
6046 | (so through at least 3.2.1) incorrectly generate | |
6047 | DW_TAG_variable tags. */ | |
6e70227d | 6048 | |
c906108c | 6049 | char *physname; |
c906108c | 6050 | |
a9a9bd0f | 6051 | /* Get name of field. */ |
39cbfefa DJ |
6052 | fieldname = dwarf2_name (die, cu); |
6053 | if (fieldname == NULL) | |
c906108c SS |
6054 | return; |
6055 | ||
254e6b9e | 6056 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
6057 | if (attr |
6058 | /* Only create a symbol if this is an external value. | |
6059 | new_symbol checks this and puts the value in the global symbol | |
6060 | table, which we want. If it is not external, new_symbol | |
6061 | will try to put the value in cu->list_in_scope which is wrong. */ | |
6062 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
6063 | { |
6064 | /* A static const member, not much different than an enum as far as | |
6065 | we're concerned, except that we can support more types. */ | |
6066 | new_symbol (die, NULL, cu); | |
6067 | } | |
6068 | ||
2df3850c | 6069 | /* Get physical name. */ |
94af9270 | 6070 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c | 6071 | |
d8151005 DJ |
6072 | /* The name is already allocated along with this objfile, so we don't |
6073 | need to duplicate it for the type. */ | |
6074 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 6075 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 6076 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
6077 | } |
6078 | else if (die->tag == DW_TAG_inheritance) | |
6079 | { | |
6080 | /* C++ base class field. */ | |
e142c38c | 6081 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 6082 | if (attr) |
d4b96c9a JK |
6083 | { |
6084 | int byte_offset = 0; | |
6085 | ||
6086 | if (attr_form_is_section_offset (attr)) | |
6087 | dwarf2_complex_location_expr_complaint (); | |
6088 | else if (attr_form_is_constant (attr)) | |
6089 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
6090 | else if (attr_form_is_block (attr)) | |
6091 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
6092 | else | |
6093 | dwarf2_complex_location_expr_complaint (); | |
6094 | ||
6095 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); | |
6096 | } | |
c906108c | 6097 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 6098 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
6099 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
6100 | fip->nbaseclasses++; | |
6101 | } | |
6102 | } | |
6103 | ||
98751a41 JK |
6104 | /* Add a typedef defined in the scope of the FIP's class. */ |
6105 | ||
6106 | static void | |
6107 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
6108 | struct dwarf2_cu *cu) | |
6e70227d | 6109 | { |
98751a41 JK |
6110 | struct objfile *objfile = cu->objfile; |
6111 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
6112 | struct typedef_field_list *new_field; | |
6113 | struct attribute *attr; | |
6114 | struct typedef_field *fp; | |
6115 | char *fieldname = ""; | |
6116 | ||
6117 | /* Allocate a new field list entry and link it in. */ | |
6118 | new_field = xzalloc (sizeof (*new_field)); | |
6119 | make_cleanup (xfree, new_field); | |
6120 | ||
6121 | gdb_assert (die->tag == DW_TAG_typedef); | |
6122 | ||
6123 | fp = &new_field->field; | |
6124 | ||
6125 | /* Get name of field. */ | |
6126 | fp->name = dwarf2_name (die, cu); | |
6127 | if (fp->name == NULL) | |
6128 | return; | |
6129 | ||
6130 | fp->type = read_type_die (die, cu); | |
6131 | ||
6132 | new_field->next = fip->typedef_field_list; | |
6133 | fip->typedef_field_list = new_field; | |
6134 | fip->typedef_field_list_count++; | |
6135 | } | |
6136 | ||
c906108c SS |
6137 | /* Create the vector of fields, and attach it to the type. */ |
6138 | ||
6139 | static void | |
fba45db2 | 6140 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6141 | struct dwarf2_cu *cu) |
c906108c SS |
6142 | { |
6143 | int nfields = fip->nfields; | |
6144 | ||
6145 | /* Record the field count, allocate space for the array of fields, | |
6146 | and create blank accessibility bitfields if necessary. */ | |
6147 | TYPE_NFIELDS (type) = nfields; | |
6148 | TYPE_FIELDS (type) = (struct field *) | |
6149 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
6150 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
6151 | ||
b4ba55a1 | 6152 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
6153 | { |
6154 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
6155 | ||
6156 | TYPE_FIELD_PRIVATE_BITS (type) = | |
6157 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6158 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
6159 | ||
6160 | TYPE_FIELD_PROTECTED_BITS (type) = | |
6161 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6162 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
6163 | ||
6164 | TYPE_FIELD_IGNORE_BITS (type) = | |
6165 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
6166 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
6167 | } | |
6168 | ||
6169 | /* If the type has baseclasses, allocate and clear a bit vector for | |
6170 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 6171 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
6172 | { |
6173 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 6174 | unsigned char *pointer; |
c906108c SS |
6175 | |
6176 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
6177 | pointer = TYPE_ALLOC (type, num_bytes); |
6178 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
6179 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
6180 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
6181 | } | |
6182 | ||
6183 | /* Copy the saved-up fields into the field vector. Start from the head | |
6184 | of the list, adding to the tail of the field array, so that they end | |
6185 | up in the same order in the array in which they were added to the list. */ | |
6186 | while (nfields-- > 0) | |
6187 | { | |
7d0ccb61 DJ |
6188 | struct nextfield *fieldp; |
6189 | ||
6190 | if (fip->fields) | |
6191 | { | |
6192 | fieldp = fip->fields; | |
6193 | fip->fields = fieldp->next; | |
6194 | } | |
6195 | else | |
6196 | { | |
6197 | fieldp = fip->baseclasses; | |
6198 | fip->baseclasses = fieldp->next; | |
6199 | } | |
6200 | ||
6201 | TYPE_FIELD (type, nfields) = fieldp->field; | |
6202 | switch (fieldp->accessibility) | |
c906108c | 6203 | { |
c5aa993b | 6204 | case DW_ACCESS_private: |
b4ba55a1 JB |
6205 | if (cu->language != language_ada) |
6206 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 6207 | break; |
c906108c | 6208 | |
c5aa993b | 6209 | case DW_ACCESS_protected: |
b4ba55a1 JB |
6210 | if (cu->language != language_ada) |
6211 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 6212 | break; |
c906108c | 6213 | |
c5aa993b JM |
6214 | case DW_ACCESS_public: |
6215 | break; | |
c906108c | 6216 | |
c5aa993b JM |
6217 | default: |
6218 | /* Unknown accessibility. Complain and treat it as public. */ | |
6219 | { | |
e2e0b3e5 | 6220 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 6221 | fieldp->accessibility); |
c5aa993b JM |
6222 | } |
6223 | break; | |
c906108c SS |
6224 | } |
6225 | if (nfields < fip->nbaseclasses) | |
6226 | { | |
7d0ccb61 | 6227 | switch (fieldp->virtuality) |
c906108c | 6228 | { |
c5aa993b JM |
6229 | case DW_VIRTUALITY_virtual: |
6230 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 JB |
6231 | if (cu->language == language_ada) |
6232 | error ("unexpected virtuality in component of Ada type"); | |
c5aa993b JM |
6233 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
6234 | break; | |
c906108c SS |
6235 | } |
6236 | } | |
c906108c SS |
6237 | } |
6238 | } | |
6239 | ||
c906108c SS |
6240 | /* Add a member function to the proper fieldlist. */ |
6241 | ||
6242 | static void | |
107d2387 | 6243 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 6244 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 6245 | { |
e7c27a73 | 6246 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6247 | struct attribute *attr; |
6248 | struct fnfieldlist *flp; | |
6249 | int i; | |
6250 | struct fn_field *fnp; | |
6251 | char *fieldname; | |
6252 | char *physname; | |
6253 | struct nextfnfield *new_fnfield; | |
f792889a | 6254 | struct type *this_type; |
c906108c | 6255 | |
b4ba55a1 JB |
6256 | if (cu->language == language_ada) |
6257 | error ("unexpected member function in Ada type"); | |
6258 | ||
2df3850c | 6259 | /* Get name of member function. */ |
39cbfefa DJ |
6260 | fieldname = dwarf2_name (die, cu); |
6261 | if (fieldname == NULL) | |
2df3850c | 6262 | return; |
c906108c | 6263 | |
2df3850c | 6264 | /* Get the mangled name. */ |
94af9270 | 6265 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c SS |
6266 | |
6267 | /* Look up member function name in fieldlist. */ | |
6268 | for (i = 0; i < fip->nfnfields; i++) | |
6269 | { | |
27bfe10e | 6270 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
6271 | break; |
6272 | } | |
6273 | ||
6274 | /* Create new list element if necessary. */ | |
6275 | if (i < fip->nfnfields) | |
6276 | flp = &fip->fnfieldlists[i]; | |
6277 | else | |
6278 | { | |
6279 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
6280 | { | |
6281 | fip->fnfieldlists = (struct fnfieldlist *) | |
6282 | xrealloc (fip->fnfieldlists, | |
6283 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 6284 | * sizeof (struct fnfieldlist)); |
c906108c | 6285 | if (fip->nfnfields == 0) |
c13c43fd | 6286 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
6287 | } |
6288 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
6289 | flp->name = fieldname; | |
6290 | flp->length = 0; | |
6291 | flp->head = NULL; | |
6292 | fip->nfnfields++; | |
6293 | } | |
6294 | ||
6295 | /* Create a new member function field and chain it to the field list | |
6296 | entry. */ | |
6297 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 6298 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
6299 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
6300 | new_fnfield->next = flp->head; | |
6301 | flp->head = new_fnfield; | |
6302 | flp->length++; | |
6303 | ||
6304 | /* Fill in the member function field info. */ | |
6305 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
6306 | /* The name is already allocated along with this objfile, so we don't |
6307 | need to duplicate it for the type. */ | |
6308 | fnp->physname = physname ? physname : ""; | |
c906108c | 6309 | fnp->type = alloc_type (objfile); |
f792889a DJ |
6310 | this_type = read_type_die (die, cu); |
6311 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 6312 | { |
f792889a | 6313 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 6314 | |
f792889a | 6315 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
6316 | of the method itself (TYPE_CODE_METHOD). */ |
6317 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
6318 | TYPE_TARGET_TYPE (this_type), |
6319 | TYPE_FIELDS (this_type), | |
6320 | TYPE_NFIELDS (this_type), | |
6321 | TYPE_VARARGS (this_type)); | |
c906108c SS |
6322 | |
6323 | /* Handle static member functions. | |
c5aa993b JM |
6324 | Dwarf2 has no clean way to discern C++ static and non-static |
6325 | member functions. G++ helps GDB by marking the first | |
6326 | parameter for non-static member functions (which is the | |
6327 | this pointer) as artificial. We obtain this information | |
6328 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 6329 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
6330 | fnp->voffset = VOFFSET_STATIC; |
6331 | } | |
6332 | else | |
e2e0b3e5 | 6333 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 6334 | physname); |
c906108c SS |
6335 | |
6336 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 6337 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 6338 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
6339 | |
6340 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
6341 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
6342 | ||
6343 | /* Get accessibility. */ | |
e142c38c | 6344 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
6345 | if (attr) |
6346 | { | |
6347 | switch (DW_UNSND (attr)) | |
6348 | { | |
c5aa993b JM |
6349 | case DW_ACCESS_private: |
6350 | fnp->is_private = 1; | |
6351 | break; | |
6352 | case DW_ACCESS_protected: | |
6353 | fnp->is_protected = 1; | |
6354 | break; | |
c906108c SS |
6355 | } |
6356 | } | |
6357 | ||
b02dede2 | 6358 | /* Check for artificial methods. */ |
e142c38c | 6359 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
6360 | if (attr && DW_UNSND (attr) != 0) |
6361 | fnp->is_artificial = 1; | |
6362 | ||
0d564a31 | 6363 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
6364 | function. For older versions of GCC, this is an offset in the |
6365 | appropriate virtual table, as specified by DW_AT_containing_type. | |
6366 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
6367 | to the object address. */ |
6368 | ||
e142c38c | 6369 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 6370 | if (attr) |
8e19ed76 | 6371 | { |
aec5aa8b | 6372 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 6373 | { |
aec5aa8b TT |
6374 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
6375 | { | |
6376 | /* Old-style GCC. */ | |
6377 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
6378 | } | |
6379 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
6380 | || (DW_BLOCK (attr)->size > 1 | |
6381 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
6382 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
6383 | { | |
6384 | struct dwarf_block blk; | |
6385 | int offset; | |
6386 | ||
6387 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
6388 | ? 1 : 2); | |
6389 | blk.size = DW_BLOCK (attr)->size - offset; | |
6390 | blk.data = DW_BLOCK (attr)->data + offset; | |
6391 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
6392 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
6393 | dwarf2_complex_location_expr_complaint (); | |
6394 | else | |
6395 | fnp->voffset /= cu->header.addr_size; | |
6396 | fnp->voffset += 2; | |
6397 | } | |
6398 | else | |
6399 | dwarf2_complex_location_expr_complaint (); | |
6400 | ||
6401 | if (!fnp->fcontext) | |
6402 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
6403 | } | |
3690dd37 | 6404 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 6405 | { |
4d3c2250 | 6406 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
6407 | } |
6408 | else | |
6409 | { | |
4d3c2250 KB |
6410 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
6411 | fieldname); | |
8e19ed76 | 6412 | } |
0d564a31 | 6413 | } |
d48cc9dd DJ |
6414 | else |
6415 | { | |
6416 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
6417 | if (attr && DW_UNSND (attr)) | |
6418 | { | |
6419 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
6420 | complaint (&symfile_complaints, | |
6421 | _("Member function \"%s\" (offset %d) is virtual but the vtable offset is not specified"), | |
6422 | fieldname, die->offset); | |
9655fd1a | 6423 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
6424 | TYPE_CPLUS_DYNAMIC (type) = 1; |
6425 | } | |
6426 | } | |
c906108c SS |
6427 | } |
6428 | ||
6429 | /* Create the vector of member function fields, and attach it to the type. */ | |
6430 | ||
6431 | static void | |
fba45db2 | 6432 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6433 | struct dwarf2_cu *cu) |
c906108c SS |
6434 | { |
6435 | struct fnfieldlist *flp; | |
6436 | int total_length = 0; | |
6437 | int i; | |
6438 | ||
b4ba55a1 JB |
6439 | if (cu->language == language_ada) |
6440 | error ("unexpected member functions in Ada type"); | |
6441 | ||
c906108c SS |
6442 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
6443 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
6444 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
6445 | ||
6446 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
6447 | { | |
6448 | struct nextfnfield *nfp = flp->head; | |
6449 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
6450 | int k; | |
6451 | ||
6452 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
6453 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
6454 | fn_flp->fn_fields = (struct fn_field *) | |
6455 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
6456 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 6457 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
6458 | |
6459 | total_length += flp->length; | |
6460 | } | |
6461 | ||
6462 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
6463 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
6464 | } | |
6465 | ||
1168df01 JB |
6466 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
6467 | language, zero otherwise. */ | |
6468 | static int | |
6469 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
6470 | { | |
6471 | static const char vptr[] = "_vptr"; | |
987504bb | 6472 | static const char vtable[] = "vtable"; |
1168df01 | 6473 | |
987504bb JJ |
6474 | /* Look for the C++ and Java forms of the vtable. */ |
6475 | if ((cu->language == language_java | |
6476 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
6477 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
6478 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
6479 | return 1; |
6480 | ||
6481 | return 0; | |
6482 | } | |
6483 | ||
c0dd20ea | 6484 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
6485 | functions, with the ABI-specified layout. If TYPE describes |
6486 | such a structure, smash it into a member function type. | |
61049d3b DJ |
6487 | |
6488 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
6489 | This is GCC PR debug/28767. */ | |
c0dd20ea | 6490 | |
0b92b5bb TT |
6491 | static void |
6492 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 6493 | { |
0b92b5bb | 6494 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
6495 | |
6496 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
6497 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
6498 | return; | |
c0dd20ea DJ |
6499 | |
6500 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
6501 | if (TYPE_FIELD_NAME (type, 0) == NULL |
6502 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
6503 | || TYPE_FIELD_NAME (type, 1) == NULL | |
6504 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
6505 | return; | |
c0dd20ea DJ |
6506 | |
6507 | /* Find the type of the method. */ | |
0b92b5bb | 6508 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
6509 | if (pfn_type == NULL |
6510 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
6511 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 6512 | return; |
c0dd20ea DJ |
6513 | |
6514 | /* Look for the "this" argument. */ | |
6515 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
6516 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 6517 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 6518 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 6519 | return; |
c0dd20ea DJ |
6520 | |
6521 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
6522 | new_type = alloc_type (objfile); |
6523 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
6524 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
6525 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 6526 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 6527 | } |
1168df01 | 6528 | |
c906108c SS |
6529 | /* Called when we find the DIE that starts a structure or union scope |
6530 | (definition) to process all dies that define the members of the | |
6531 | structure or union. | |
6532 | ||
6533 | NOTE: we need to call struct_type regardless of whether or not the | |
6534 | DIE has an at_name attribute, since it might be an anonymous | |
6535 | structure or union. This gets the type entered into our set of | |
6536 | user defined types. | |
6537 | ||
6538 | However, if the structure is incomplete (an opaque struct/union) | |
6539 | then suppress creating a symbol table entry for it since gdb only | |
6540 | wants to find the one with the complete definition. Note that if | |
6541 | it is complete, we just call new_symbol, which does it's own | |
6542 | checking about whether the struct/union is anonymous or not (and | |
6543 | suppresses creating a symbol table entry itself). */ | |
6544 | ||
f792889a | 6545 | static struct type * |
134d01f1 | 6546 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6547 | { |
e7c27a73 | 6548 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6549 | struct type *type; |
6550 | struct attribute *attr; | |
39cbfefa | 6551 | char *name; |
d3f41bb1 | 6552 | struct cleanup *back_to; |
c906108c | 6553 | |
348e048f DE |
6554 | /* If the definition of this type lives in .debug_types, read that type. |
6555 | Don't follow DW_AT_specification though, that will take us back up | |
6556 | the chain and we want to go down. */ | |
6557 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
6558 | if (attr) | |
6559 | { | |
6560 | struct dwarf2_cu *type_cu = cu; | |
6561 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 6562 | |
348e048f DE |
6563 | /* We could just recurse on read_structure_type, but we need to call |
6564 | get_die_type to ensure only one type for this DIE is created. | |
6565 | This is important, for example, because for c++ classes we need | |
6566 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
6567 | type = read_type_die (type_die, type_cu); | |
6568 | return set_die_type (die, type, cu); | |
6569 | } | |
6570 | ||
d3f41bb1 TT |
6571 | back_to = make_cleanup (null_cleanup, 0); |
6572 | ||
c0dd20ea | 6573 | type = alloc_type (objfile); |
c906108c | 6574 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 6575 | |
39cbfefa DJ |
6576 | name = dwarf2_name (die, cu); |
6577 | if (name != NULL) | |
c906108c | 6578 | { |
987504bb JJ |
6579 | if (cu->language == language_cplus |
6580 | || cu->language == language_java) | |
63d06c5c | 6581 | { |
94af9270 KS |
6582 | TYPE_TAG_NAME (type) = (char *) dwarf2_full_name (name, die, cu); |
6583 | if (die->tag == DW_TAG_structure_type | |
6584 | || die->tag == DW_TAG_class_type) | |
6585 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
6586 | } |
6587 | else | |
6588 | { | |
d8151005 DJ |
6589 | /* The name is already allocated along with this objfile, so |
6590 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
6591 | TYPE_TAG_NAME (type) = (char *) name; |
6592 | if (die->tag == DW_TAG_class_type) | |
6593 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 6594 | } |
c906108c SS |
6595 | } |
6596 | ||
6597 | if (die->tag == DW_TAG_structure_type) | |
6598 | { | |
6599 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
6600 | } | |
6601 | else if (die->tag == DW_TAG_union_type) | |
6602 | { | |
6603 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
6604 | } | |
6605 | else | |
6606 | { | |
c906108c SS |
6607 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
6608 | } | |
6609 | ||
0cc2414c TT |
6610 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
6611 | TYPE_DECLARED_CLASS (type) = 1; | |
6612 | ||
e142c38c | 6613 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6614 | if (attr) |
6615 | { | |
6616 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
6617 | } | |
6618 | else | |
6619 | { | |
6620 | TYPE_LENGTH (type) = 0; | |
6621 | } | |
6622 | ||
876cecd0 | 6623 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 6624 | if (die_is_declaration (die, cu)) |
876cecd0 | 6625 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
6626 | else if (attr == NULL && die->child == NULL |
6627 | && producer_is_realview (cu->producer)) | |
6628 | /* RealView does not output the required DW_AT_declaration | |
6629 | on incomplete types. */ | |
6630 | TYPE_STUB (type) = 1; | |
dc718098 | 6631 | |
c906108c SS |
6632 | /* We need to add the type field to the die immediately so we don't |
6633 | infinitely recurse when dealing with pointers to the structure | |
6634 | type within the structure itself. */ | |
1c379e20 | 6635 | set_die_type (die, type, cu); |
c906108c | 6636 | |
7e314c57 JK |
6637 | /* set_die_type should be already done. */ |
6638 | set_descriptive_type (type, die, cu); | |
6639 | ||
e142c38c | 6640 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
6641 | { |
6642 | struct field_info fi; | |
6643 | struct die_info *child_die; | |
34eaf542 | 6644 | VEC (symbolp) *template_args = NULL; |
c906108c SS |
6645 | |
6646 | memset (&fi, 0, sizeof (struct field_info)); | |
6647 | ||
639d11d3 | 6648 | child_die = die->child; |
c906108c SS |
6649 | |
6650 | while (child_die && child_die->tag) | |
6651 | { | |
a9a9bd0f DC |
6652 | if (child_die->tag == DW_TAG_member |
6653 | || child_die->tag == DW_TAG_variable) | |
c906108c | 6654 | { |
a9a9bd0f DC |
6655 | /* NOTE: carlton/2002-11-05: A C++ static data member |
6656 | should be a DW_TAG_member that is a declaration, but | |
6657 | all versions of G++ as of this writing (so through at | |
6658 | least 3.2.1) incorrectly generate DW_TAG_variable | |
6659 | tags for them instead. */ | |
e7c27a73 | 6660 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 6661 | } |
8713b1b1 | 6662 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
6663 | { |
6664 | /* C++ member function. */ | |
e7c27a73 | 6665 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
6666 | } |
6667 | else if (child_die->tag == DW_TAG_inheritance) | |
6668 | { | |
6669 | /* C++ base class field. */ | |
e7c27a73 | 6670 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 6671 | } |
98751a41 JK |
6672 | else if (child_die->tag == DW_TAG_typedef) |
6673 | dwarf2_add_typedef (&fi, child_die, cu); | |
34eaf542 TT |
6674 | else if (child_die->tag == DW_TAG_template_type_param |
6675 | || child_die->tag == DW_TAG_template_value_param) | |
6676 | { | |
6677 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
6678 | ||
6679 | VEC_safe_push (symbolp, template_args, arg); | |
6680 | } | |
6681 | ||
c906108c SS |
6682 | child_die = sibling_die (child_die); |
6683 | } | |
6684 | ||
34eaf542 TT |
6685 | /* Attach template arguments to type. */ |
6686 | if (! VEC_empty (symbolp, template_args)) | |
6687 | { | |
6688 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
6689 | TYPE_N_TEMPLATE_ARGUMENTS (type) | |
6690 | = VEC_length (symbolp, template_args); | |
6691 | TYPE_TEMPLATE_ARGUMENTS (type) | |
6692 | = obstack_alloc (&objfile->objfile_obstack, | |
6693 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
6694 | * sizeof (struct symbol *))); | |
6695 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), | |
6696 | VEC_address (symbolp, template_args), | |
6697 | (TYPE_N_TEMPLATE_ARGUMENTS (type) | |
6698 | * sizeof (struct symbol *))); | |
6699 | VEC_free (symbolp, template_args); | |
6700 | } | |
6701 | ||
c906108c SS |
6702 | /* Attach fields and member functions to the type. */ |
6703 | if (fi.nfields) | |
e7c27a73 | 6704 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
6705 | if (fi.nfnfields) |
6706 | { | |
e7c27a73 | 6707 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 6708 | |
c5aa993b | 6709 | /* Get the type which refers to the base class (possibly this |
c906108c | 6710 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
6711 | class from the DW_AT_containing_type attribute. This use of |
6712 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 6713 | |
e142c38c | 6714 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 6715 | { |
e7c27a73 | 6716 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
6717 | |
6718 | TYPE_VPTR_BASETYPE (type) = t; | |
6719 | if (type == t) | |
6720 | { | |
c906108c SS |
6721 | int i; |
6722 | ||
6723 | /* Our own class provides vtbl ptr. */ | |
6724 | for (i = TYPE_NFIELDS (t) - 1; | |
6725 | i >= TYPE_N_BASECLASSES (t); | |
6726 | --i) | |
6727 | { | |
6728 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
6729 | ||
1168df01 | 6730 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
6731 | { |
6732 | TYPE_VPTR_FIELDNO (type) = i; | |
6733 | break; | |
6734 | } | |
6735 | } | |
6736 | ||
6737 | /* Complain if virtual function table field not found. */ | |
6738 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 6739 | complaint (&symfile_complaints, |
e2e0b3e5 | 6740 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
6741 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
6742 | ""); | |
c906108c SS |
6743 | } |
6744 | else | |
6745 | { | |
6746 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
6747 | } | |
6748 | } | |
f6235d4c EZ |
6749 | else if (cu->producer |
6750 | && strncmp (cu->producer, | |
6751 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
6752 | { | |
6753 | /* The IBM XLC compiler does not provide direct indication | |
6754 | of the containing type, but the vtable pointer is | |
6755 | always named __vfp. */ | |
6756 | ||
6757 | int i; | |
6758 | ||
6759 | for (i = TYPE_NFIELDS (type) - 1; | |
6760 | i >= TYPE_N_BASECLASSES (type); | |
6761 | --i) | |
6762 | { | |
6763 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
6764 | { | |
6765 | TYPE_VPTR_FIELDNO (type) = i; | |
6766 | TYPE_VPTR_BASETYPE (type) = type; | |
6767 | break; | |
6768 | } | |
6769 | } | |
6770 | } | |
c906108c | 6771 | } |
98751a41 JK |
6772 | |
6773 | /* Copy fi.typedef_field_list linked list elements content into the | |
6774 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
6775 | if (fi.typedef_field_list) | |
6776 | { | |
6777 | int i = fi.typedef_field_list_count; | |
6778 | ||
a0d7a4ff | 6779 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
6780 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
6781 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
6782 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
6783 | ||
6784 | /* Reverse the list order to keep the debug info elements order. */ | |
6785 | while (--i >= 0) | |
6786 | { | |
6787 | struct typedef_field *dest, *src; | |
6e70227d | 6788 | |
98751a41 JK |
6789 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
6790 | src = &fi.typedef_field_list->field; | |
6791 | fi.typedef_field_list = fi.typedef_field_list->next; | |
6792 | *dest = *src; | |
6793 | } | |
6794 | } | |
c906108c | 6795 | } |
63d06c5c | 6796 | |
0b92b5bb TT |
6797 | quirk_gcc_member_function_pointer (type, cu->objfile); |
6798 | ||
0114d602 | 6799 | do_cleanups (back_to); |
f792889a | 6800 | return type; |
c906108c SS |
6801 | } |
6802 | ||
134d01f1 DJ |
6803 | static void |
6804 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6805 | { | |
90aeadfc | 6806 | struct die_info *child_die = die->child; |
f792889a | 6807 | struct type *this_type; |
c906108c | 6808 | |
f792889a DJ |
6809 | this_type = get_die_type (die, cu); |
6810 | if (this_type == NULL) | |
6811 | this_type = read_structure_type (die, cu); | |
c906108c | 6812 | |
90aeadfc DC |
6813 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
6814 | snapshots) has been known to create a die giving a declaration | |
6815 | for a class that has, as a child, a die giving a definition for a | |
6816 | nested class. So we have to process our children even if the | |
6817 | current die is a declaration. Normally, of course, a declaration | |
6818 | won't have any children at all. */ | |
134d01f1 | 6819 | |
90aeadfc DC |
6820 | while (child_die != NULL && child_die->tag) |
6821 | { | |
6822 | if (child_die->tag == DW_TAG_member | |
6823 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
6824 | || child_die->tag == DW_TAG_inheritance |
6825 | || child_die->tag == DW_TAG_template_value_param | |
6826 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 6827 | { |
90aeadfc | 6828 | /* Do nothing. */ |
134d01f1 | 6829 | } |
90aeadfc DC |
6830 | else |
6831 | process_die (child_die, cu); | |
134d01f1 | 6832 | |
90aeadfc | 6833 | child_die = sibling_die (child_die); |
134d01f1 DJ |
6834 | } |
6835 | ||
fa4028e9 JB |
6836 | /* Do not consider external references. According to the DWARF standard, |
6837 | these DIEs are identified by the fact that they have no byte_size | |
6838 | attribute, and a declaration attribute. */ | |
6839 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
6840 | || !die_is_declaration (die, cu)) | |
f792889a | 6841 | new_symbol (die, this_type, cu); |
134d01f1 DJ |
6842 | } |
6843 | ||
6844 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
6845 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 6846 | |
f792889a | 6847 | static struct type * |
134d01f1 | 6848 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6849 | { |
e7c27a73 | 6850 | struct objfile *objfile = cu->objfile; |
c906108c | 6851 | struct type *type; |
c906108c | 6852 | struct attribute *attr; |
0114d602 | 6853 | const char *name; |
134d01f1 | 6854 | |
348e048f DE |
6855 | /* If the definition of this type lives in .debug_types, read that type. |
6856 | Don't follow DW_AT_specification though, that will take us back up | |
6857 | the chain and we want to go down. */ | |
6858 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
6859 | if (attr) | |
6860 | { | |
6861 | struct dwarf2_cu *type_cu = cu; | |
6862 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 6863 | |
348e048f DE |
6864 | type = read_type_die (type_die, type_cu); |
6865 | return set_die_type (die, type, cu); | |
6866 | } | |
6867 | ||
c906108c SS |
6868 | type = alloc_type (objfile); |
6869 | ||
6870 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 6871 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 6872 | if (name != NULL) |
0114d602 | 6873 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 6874 | |
e142c38c | 6875 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6876 | if (attr) |
6877 | { | |
6878 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
6879 | } | |
6880 | else | |
6881 | { | |
6882 | TYPE_LENGTH (type) = 0; | |
6883 | } | |
6884 | ||
137033e9 JB |
6885 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
6886 | declared as private in the package spec, and then defined only | |
6887 | inside the package body. Such types are known as Taft Amendment | |
6888 | Types. When another package uses such a type, an incomplete DIE | |
6889 | may be generated by the compiler. */ | |
02eb380e | 6890 | if (die_is_declaration (die, cu)) |
876cecd0 | 6891 | TYPE_STUB (type) = 1; |
02eb380e | 6892 | |
f792889a | 6893 | return set_die_type (die, type, cu); |
134d01f1 DJ |
6894 | } |
6895 | ||
6896 | /* Given a pointer to a die which begins an enumeration, process all | |
6897 | the dies that define the members of the enumeration, and create the | |
6898 | symbol for the enumeration type. | |
6899 | ||
6900 | NOTE: We reverse the order of the element list. */ | |
6901 | ||
6902 | static void | |
6903 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6904 | { | |
134d01f1 DJ |
6905 | struct die_info *child_die; |
6906 | struct field *fields; | |
134d01f1 DJ |
6907 | struct symbol *sym; |
6908 | int num_fields; | |
6909 | int unsigned_enum = 1; | |
39cbfefa | 6910 | char *name; |
f792889a | 6911 | struct type *this_type; |
134d01f1 | 6912 | |
c906108c SS |
6913 | num_fields = 0; |
6914 | fields = NULL; | |
f792889a DJ |
6915 | this_type = get_die_type (die, cu); |
6916 | if (this_type == NULL) | |
6917 | this_type = read_enumeration_type (die, cu); | |
639d11d3 | 6918 | if (die->child != NULL) |
c906108c | 6919 | { |
639d11d3 | 6920 | child_die = die->child; |
c906108c SS |
6921 | while (child_die && child_die->tag) |
6922 | { | |
6923 | if (child_die->tag != DW_TAG_enumerator) | |
6924 | { | |
e7c27a73 | 6925 | process_die (child_die, cu); |
c906108c SS |
6926 | } |
6927 | else | |
6928 | { | |
39cbfefa DJ |
6929 | name = dwarf2_name (child_die, cu); |
6930 | if (name) | |
c906108c | 6931 | { |
f792889a | 6932 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
6933 | if (SYMBOL_VALUE (sym) < 0) |
6934 | unsigned_enum = 0; | |
6935 | ||
6936 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
6937 | { | |
6938 | fields = (struct field *) | |
6939 | xrealloc (fields, | |
6940 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 6941 | * sizeof (struct field)); |
c906108c SS |
6942 | } |
6943 | ||
3567439c | 6944 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 6945 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 6946 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
6947 | FIELD_BITSIZE (fields[num_fields]) = 0; |
6948 | ||
6949 | num_fields++; | |
6950 | } | |
6951 | } | |
6952 | ||
6953 | child_die = sibling_die (child_die); | |
6954 | } | |
6955 | ||
6956 | if (num_fields) | |
6957 | { | |
f792889a DJ |
6958 | TYPE_NFIELDS (this_type) = num_fields; |
6959 | TYPE_FIELDS (this_type) = (struct field *) | |
6960 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
6961 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 6962 | sizeof (struct field) * num_fields); |
b8c9b27d | 6963 | xfree (fields); |
c906108c SS |
6964 | } |
6965 | if (unsigned_enum) | |
876cecd0 | 6966 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 6967 | } |
134d01f1 | 6968 | |
f792889a | 6969 | new_symbol (die, this_type, cu); |
c906108c SS |
6970 | } |
6971 | ||
6972 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
6973 | the DIE's type field. For now, this only handles one dimensional | |
6974 | arrays. */ | |
6975 | ||
f792889a | 6976 | static struct type * |
e7c27a73 | 6977 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6978 | { |
e7c27a73 | 6979 | struct objfile *objfile = cu->objfile; |
c906108c | 6980 | struct die_info *child_die; |
7e314c57 | 6981 | struct type *type; |
c906108c SS |
6982 | struct type *element_type, *range_type, *index_type; |
6983 | struct type **range_types = NULL; | |
6984 | struct attribute *attr; | |
6985 | int ndim = 0; | |
6986 | struct cleanup *back_to; | |
39cbfefa | 6987 | char *name; |
c906108c | 6988 | |
e7c27a73 | 6989 | element_type = die_type (die, cu); |
c906108c | 6990 | |
7e314c57 JK |
6991 | /* The die_type call above may have already set the type for this DIE. */ |
6992 | type = get_die_type (die, cu); | |
6993 | if (type) | |
6994 | return type; | |
6995 | ||
c906108c SS |
6996 | /* Irix 6.2 native cc creates array types without children for |
6997 | arrays with unspecified length. */ | |
639d11d3 | 6998 | if (die->child == NULL) |
c906108c | 6999 | { |
46bf5051 | 7000 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 7001 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
7002 | type = create_array_type (NULL, element_type, range_type); |
7003 | return set_die_type (die, type, cu); | |
c906108c SS |
7004 | } |
7005 | ||
7006 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 7007 | child_die = die->child; |
c906108c SS |
7008 | while (child_die && child_die->tag) |
7009 | { | |
7010 | if (child_die->tag == DW_TAG_subrange_type) | |
7011 | { | |
f792889a | 7012 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 7013 | |
f792889a | 7014 | if (child_type != NULL) |
a02abb62 JB |
7015 | { |
7016 | /* The range type was succesfully read. Save it for | |
7017 | the array type creation. */ | |
7018 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
7019 | { | |
7020 | range_types = (struct type **) | |
7021 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
7022 | * sizeof (struct type *)); | |
7023 | if (ndim == 0) | |
7024 | make_cleanup (free_current_contents, &range_types); | |
7025 | } | |
f792889a | 7026 | range_types[ndim++] = child_type; |
a02abb62 | 7027 | } |
c906108c SS |
7028 | } |
7029 | child_die = sibling_die (child_die); | |
7030 | } | |
7031 | ||
7032 | /* Dwarf2 dimensions are output from left to right, create the | |
7033 | necessary array types in backwards order. */ | |
7ca2d3a3 | 7034 | |
c906108c | 7035 | type = element_type; |
7ca2d3a3 DL |
7036 | |
7037 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
7038 | { | |
7039 | int i = 0; | |
9a619af0 | 7040 | |
7ca2d3a3 DL |
7041 | while (i < ndim) |
7042 | type = create_array_type (NULL, type, range_types[i++]); | |
7043 | } | |
7044 | else | |
7045 | { | |
7046 | while (ndim-- > 0) | |
7047 | type = create_array_type (NULL, type, range_types[ndim]); | |
7048 | } | |
c906108c | 7049 | |
f5f8a009 EZ |
7050 | /* Understand Dwarf2 support for vector types (like they occur on |
7051 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
7052 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
7053 | custom vendor extension. The main difference between a regular | |
7054 | array and the vector variant is that vectors are passed by value | |
7055 | to functions. */ | |
e142c38c | 7056 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 7057 | if (attr) |
ea37ba09 | 7058 | make_vector_type (type); |
f5f8a009 | 7059 | |
39cbfefa DJ |
7060 | name = dwarf2_name (die, cu); |
7061 | if (name) | |
7062 | TYPE_NAME (type) = name; | |
6e70227d | 7063 | |
7e314c57 JK |
7064 | /* Install the type in the die. */ |
7065 | set_die_type (die, type, cu); | |
7066 | ||
7067 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
7068 | set_descriptive_type (type, die, cu); |
7069 | ||
c906108c SS |
7070 | do_cleanups (back_to); |
7071 | ||
7e314c57 | 7072 | return type; |
c906108c SS |
7073 | } |
7074 | ||
7ca2d3a3 | 7075 | static enum dwarf_array_dim_ordering |
6e70227d | 7076 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
7077 | { |
7078 | struct attribute *attr; | |
7079 | ||
7080 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
7081 | ||
7082 | if (attr) return DW_SND (attr); | |
7083 | ||
7084 | /* | |
7085 | GNU F77 is a special case, as at 08/2004 array type info is the | |
6e70227d | 7086 | opposite order to the dwarf2 specification, but data is still |
7ca2d3a3 DL |
7087 | laid out as per normal fortran. |
7088 | ||
6e70227d | 7089 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
7ca2d3a3 DL |
7090 | version checking. |
7091 | */ | |
7092 | ||
905e0470 PM |
7093 | if (cu->language == language_fortran |
7094 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
7095 | { |
7096 | return DW_ORD_row_major; | |
7097 | } | |
7098 | ||
6e70227d | 7099 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
7100 | { |
7101 | case array_column_major: | |
7102 | return DW_ORD_col_major; | |
7103 | case array_row_major: | |
7104 | default: | |
7105 | return DW_ORD_row_major; | |
7106 | }; | |
7107 | } | |
7108 | ||
72019c9c GM |
7109 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
7110 | the DIE's type field. */ | |
7111 | ||
f792889a | 7112 | static struct type * |
72019c9c GM |
7113 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
7114 | { | |
7e314c57 JK |
7115 | struct type *domain_type, *set_type; |
7116 | struct attribute *attr; | |
f792889a | 7117 | |
7e314c57 JK |
7118 | domain_type = die_type (die, cu); |
7119 | ||
7120 | /* The die_type call above may have already set the type for this DIE. */ | |
7121 | set_type = get_die_type (die, cu); | |
7122 | if (set_type) | |
7123 | return set_type; | |
7124 | ||
7125 | set_type = create_set_type (NULL, domain_type); | |
7126 | ||
7127 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
7128 | if (attr) |
7129 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 7130 | |
f792889a | 7131 | return set_die_type (die, set_type, cu); |
72019c9c | 7132 | } |
7ca2d3a3 | 7133 | |
c906108c SS |
7134 | /* First cut: install each common block member as a global variable. */ |
7135 | ||
7136 | static void | |
e7c27a73 | 7137 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7138 | { |
7139 | struct die_info *child_die; | |
7140 | struct attribute *attr; | |
7141 | struct symbol *sym; | |
7142 | CORE_ADDR base = (CORE_ADDR) 0; | |
7143 | ||
e142c38c | 7144 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7145 | if (attr) |
7146 | { | |
8e19ed76 PS |
7147 | /* Support the .debug_loc offsets */ |
7148 | if (attr_form_is_block (attr)) | |
7149 | { | |
e7c27a73 | 7150 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 7151 | } |
3690dd37 | 7152 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 7153 | { |
4d3c2250 | 7154 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
7155 | } |
7156 | else | |
7157 | { | |
4d3c2250 KB |
7158 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
7159 | "common block member"); | |
8e19ed76 | 7160 | } |
c906108c | 7161 | } |
639d11d3 | 7162 | if (die->child != NULL) |
c906108c | 7163 | { |
639d11d3 | 7164 | child_die = die->child; |
c906108c SS |
7165 | while (child_die && child_die->tag) |
7166 | { | |
e7c27a73 | 7167 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 7168 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
7169 | if (attr) |
7170 | { | |
d4b96c9a JK |
7171 | CORE_ADDR byte_offset = 0; |
7172 | ||
7173 | if (attr_form_is_section_offset (attr)) | |
7174 | dwarf2_complex_location_expr_complaint (); | |
7175 | else if (attr_form_is_constant (attr)) | |
7176 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
7177 | else if (attr_form_is_block (attr)) | |
7178 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
7179 | else | |
7180 | dwarf2_complex_location_expr_complaint (); | |
7181 | ||
7182 | SYMBOL_VALUE_ADDRESS (sym) = base + byte_offset; | |
c906108c SS |
7183 | add_symbol_to_list (sym, &global_symbols); |
7184 | } | |
7185 | child_die = sibling_die (child_die); | |
7186 | } | |
7187 | } | |
7188 | } | |
7189 | ||
0114d602 | 7190 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 7191 | |
0114d602 DJ |
7192 | static struct type * |
7193 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 7194 | { |
e7c27a73 | 7195 | struct objfile *objfile = cu->objfile; |
0114d602 | 7196 | const char *previous_prefix, *name; |
9219021c | 7197 | int is_anonymous; |
0114d602 DJ |
7198 | struct type *type; |
7199 | ||
7200 | /* For extensions, reuse the type of the original namespace. */ | |
7201 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
7202 | { | |
7203 | struct die_info *ext_die; | |
7204 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 7205 | |
0114d602 DJ |
7206 | ext_die = dwarf2_extension (die, &ext_cu); |
7207 | type = read_type_die (ext_die, ext_cu); | |
7208 | return set_die_type (die, type, cu); | |
7209 | } | |
9219021c | 7210 | |
e142c38c | 7211 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
7212 | |
7213 | /* Now build the name of the current namespace. */ | |
7214 | ||
0114d602 DJ |
7215 | previous_prefix = determine_prefix (die, cu); |
7216 | if (previous_prefix[0] != '\0') | |
7217 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 7218 | previous_prefix, name, 0, cu); |
0114d602 DJ |
7219 | |
7220 | /* Create the type. */ | |
7221 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
7222 | objfile); | |
7223 | TYPE_NAME (type) = (char *) name; | |
7224 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7225 | ||
60531b24 | 7226 | return set_die_type (die, type, cu); |
0114d602 DJ |
7227 | } |
7228 | ||
7229 | /* Read a C++ namespace. */ | |
7230 | ||
7231 | static void | |
7232 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
7233 | { | |
7234 | struct objfile *objfile = cu->objfile; | |
7235 | const char *name; | |
7236 | int is_anonymous; | |
9219021c | 7237 | |
5c4e30ca DC |
7238 | /* Add a symbol associated to this if we haven't seen the namespace |
7239 | before. Also, add a using directive if it's an anonymous | |
7240 | namespace. */ | |
9219021c | 7241 | |
f2f0e013 | 7242 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
7243 | { |
7244 | struct type *type; | |
7245 | ||
0114d602 | 7246 | type = read_type_die (die, cu); |
e7c27a73 | 7247 | new_symbol (die, type, cu); |
5c4e30ca | 7248 | |
0114d602 | 7249 | name = namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 7250 | if (is_anonymous) |
0114d602 DJ |
7251 | { |
7252 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 7253 | |
c0cc3a76 | 7254 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
13387711 | 7255 | NULL, &objfile->objfile_obstack); |
0114d602 | 7256 | } |
5c4e30ca | 7257 | } |
9219021c | 7258 | |
639d11d3 | 7259 | if (die->child != NULL) |
d9fa45fe | 7260 | { |
639d11d3 | 7261 | struct die_info *child_die = die->child; |
6e70227d | 7262 | |
d9fa45fe DC |
7263 | while (child_die && child_die->tag) |
7264 | { | |
e7c27a73 | 7265 | process_die (child_die, cu); |
d9fa45fe DC |
7266 | child_die = sibling_die (child_die); |
7267 | } | |
7268 | } | |
38d518c9 EZ |
7269 | } |
7270 | ||
f55ee35c JK |
7271 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
7272 | imported module. Still we need that type as local Fortran "use ... only" | |
7273 | declaration imports depend on the created type in determine_prefix. */ | |
7274 | ||
7275 | static struct type * | |
7276 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
7277 | { | |
7278 | struct objfile *objfile = cu->objfile; | |
7279 | char *module_name; | |
7280 | struct type *type; | |
7281 | ||
7282 | module_name = dwarf2_name (die, cu); | |
7283 | if (!module_name) | |
7284 | complaint (&symfile_complaints, _("DW_TAG_module has no name, offset 0x%x"), | |
7285 | die->offset); | |
7286 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); | |
7287 | ||
7288 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
7289 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
7290 | ||
7291 | return set_die_type (die, type, cu); | |
7292 | } | |
7293 | ||
5d7cb8df JK |
7294 | /* Read a Fortran module. */ |
7295 | ||
7296 | static void | |
7297 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
7298 | { | |
7299 | struct die_info *child_die = die->child; | |
7300 | ||
5d7cb8df JK |
7301 | while (child_die && child_die->tag) |
7302 | { | |
7303 | process_die (child_die, cu); | |
7304 | child_die = sibling_die (child_die); | |
7305 | } | |
7306 | } | |
7307 | ||
38d518c9 EZ |
7308 | /* Return the name of the namespace represented by DIE. Set |
7309 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
7310 | namespace. */ | |
7311 | ||
7312 | static const char * | |
e142c38c | 7313 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
7314 | { |
7315 | struct die_info *current_die; | |
7316 | const char *name = NULL; | |
7317 | ||
7318 | /* Loop through the extensions until we find a name. */ | |
7319 | ||
7320 | for (current_die = die; | |
7321 | current_die != NULL; | |
f2f0e013 | 7322 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 7323 | { |
e142c38c | 7324 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
7325 | if (name != NULL) |
7326 | break; | |
7327 | } | |
7328 | ||
7329 | /* Is it an anonymous namespace? */ | |
7330 | ||
7331 | *is_anonymous = (name == NULL); | |
7332 | if (*is_anonymous) | |
7333 | name = "(anonymous namespace)"; | |
7334 | ||
7335 | return name; | |
d9fa45fe DC |
7336 | } |
7337 | ||
c906108c SS |
7338 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
7339 | the user defined type vector. */ | |
7340 | ||
f792889a | 7341 | static struct type * |
e7c27a73 | 7342 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7343 | { |
5e2b427d | 7344 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 7345 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 7346 | struct type *type; |
8b2dbe47 KB |
7347 | struct attribute *attr_byte_size; |
7348 | struct attribute *attr_address_class; | |
7349 | int byte_size, addr_class; | |
7e314c57 JK |
7350 | struct type *target_type; |
7351 | ||
7352 | target_type = die_type (die, cu); | |
c906108c | 7353 | |
7e314c57 JK |
7354 | /* The die_type call above may have already set the type for this DIE. */ |
7355 | type = get_die_type (die, cu); | |
7356 | if (type) | |
7357 | return type; | |
7358 | ||
7359 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 7360 | |
e142c38c | 7361 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
7362 | if (attr_byte_size) |
7363 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 7364 | else |
8b2dbe47 KB |
7365 | byte_size = cu_header->addr_size; |
7366 | ||
e142c38c | 7367 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
7368 | if (attr_address_class) |
7369 | addr_class = DW_UNSND (attr_address_class); | |
7370 | else | |
7371 | addr_class = DW_ADDR_none; | |
7372 | ||
7373 | /* If the pointer size or address class is different than the | |
7374 | default, create a type variant marked as such and set the | |
7375 | length accordingly. */ | |
7376 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 7377 | { |
5e2b427d | 7378 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
7379 | { |
7380 | int type_flags; | |
7381 | ||
849957d9 | 7382 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 7383 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
7384 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
7385 | == 0); | |
8b2dbe47 KB |
7386 | type = make_type_with_address_space (type, type_flags); |
7387 | } | |
7388 | else if (TYPE_LENGTH (type) != byte_size) | |
7389 | { | |
e2e0b3e5 | 7390 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 | 7391 | } |
6e70227d | 7392 | else |
9a619af0 MS |
7393 | { |
7394 | /* Should we also complain about unhandled address classes? */ | |
7395 | } | |
c906108c | 7396 | } |
8b2dbe47 KB |
7397 | |
7398 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 7399 | return set_die_type (die, type, cu); |
c906108c SS |
7400 | } |
7401 | ||
7402 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
7403 | the user defined type vector. */ | |
7404 | ||
f792889a | 7405 | static struct type * |
e7c27a73 | 7406 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7407 | { |
7408 | struct type *type; | |
7409 | struct type *to_type; | |
7410 | struct type *domain; | |
7411 | ||
e7c27a73 DJ |
7412 | to_type = die_type (die, cu); |
7413 | domain = die_containing_type (die, cu); | |
0d5de010 | 7414 | |
7e314c57 JK |
7415 | /* The calls above may have already set the type for this DIE. */ |
7416 | type = get_die_type (die, cu); | |
7417 | if (type) | |
7418 | return type; | |
7419 | ||
0d5de010 DJ |
7420 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
7421 | type = lookup_methodptr_type (to_type); | |
7422 | else | |
7423 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 7424 | |
f792889a | 7425 | return set_die_type (die, type, cu); |
c906108c SS |
7426 | } |
7427 | ||
7428 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
7429 | the user defined type vector. */ | |
7430 | ||
f792889a | 7431 | static struct type * |
e7c27a73 | 7432 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7433 | { |
e7c27a73 | 7434 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 7435 | struct type *type, *target_type; |
c906108c SS |
7436 | struct attribute *attr; |
7437 | ||
7e314c57 JK |
7438 | target_type = die_type (die, cu); |
7439 | ||
7440 | /* The die_type call above may have already set the type for this DIE. */ | |
7441 | type = get_die_type (die, cu); | |
7442 | if (type) | |
7443 | return type; | |
7444 | ||
7445 | type = lookup_reference_type (target_type); | |
e142c38c | 7446 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7447 | if (attr) |
7448 | { | |
7449 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
7450 | } | |
7451 | else | |
7452 | { | |
107d2387 | 7453 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 7454 | } |
f792889a | 7455 | return set_die_type (die, type, cu); |
c906108c SS |
7456 | } |
7457 | ||
f792889a | 7458 | static struct type * |
e7c27a73 | 7459 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7460 | { |
f792889a | 7461 | struct type *base_type, *cv_type; |
c906108c | 7462 | |
e7c27a73 | 7463 | base_type = die_type (die, cu); |
7e314c57 JK |
7464 | |
7465 | /* The die_type call above may have already set the type for this DIE. */ | |
7466 | cv_type = get_die_type (die, cu); | |
7467 | if (cv_type) | |
7468 | return cv_type; | |
7469 | ||
f792889a DJ |
7470 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
7471 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7472 | } |
7473 | ||
f792889a | 7474 | static struct type * |
e7c27a73 | 7475 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7476 | { |
f792889a | 7477 | struct type *base_type, *cv_type; |
c906108c | 7478 | |
e7c27a73 | 7479 | base_type = die_type (die, cu); |
7e314c57 JK |
7480 | |
7481 | /* The die_type call above may have already set the type for this DIE. */ | |
7482 | cv_type = get_die_type (die, cu); | |
7483 | if (cv_type) | |
7484 | return cv_type; | |
7485 | ||
f792889a DJ |
7486 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
7487 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7488 | } |
7489 | ||
7490 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
7491 | the user defined type vector. It isn't really a user defined type, | |
7492 | but it behaves like one, with other DIE's using an AT_user_def_type | |
7493 | attribute to reference it. */ | |
7494 | ||
f792889a | 7495 | static struct type * |
e7c27a73 | 7496 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7497 | { |
e7c27a73 | 7498 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 7499 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
7500 | struct type *type, *range_type, *index_type, *char_type; |
7501 | struct attribute *attr; | |
7502 | unsigned int length; | |
7503 | ||
e142c38c | 7504 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
7505 | if (attr) |
7506 | { | |
7507 | length = DW_UNSND (attr); | |
7508 | } | |
7509 | else | |
7510 | { | |
b21b22e0 | 7511 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 7512 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
7513 | if (attr) |
7514 | { | |
7515 | length = DW_UNSND (attr); | |
7516 | } | |
7517 | else | |
7518 | { | |
7519 | length = 1; | |
7520 | } | |
c906108c | 7521 | } |
6ccb9162 | 7522 | |
46bf5051 | 7523 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 7524 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
7525 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
7526 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 7527 | |
f792889a | 7528 | return set_die_type (die, type, cu); |
c906108c SS |
7529 | } |
7530 | ||
7531 | /* Handle DIES due to C code like: | |
7532 | ||
7533 | struct foo | |
c5aa993b JM |
7534 | { |
7535 | int (*funcp)(int a, long l); | |
7536 | int b; | |
7537 | }; | |
c906108c SS |
7538 | |
7539 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 7540 | */ |
c906108c | 7541 | |
f792889a | 7542 | static struct type * |
e7c27a73 | 7543 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7544 | { |
7545 | struct type *type; /* Type that this function returns */ | |
7546 | struct type *ftype; /* Function that returns above type */ | |
7547 | struct attribute *attr; | |
7548 | ||
e7c27a73 | 7549 | type = die_type (die, cu); |
7e314c57 JK |
7550 | |
7551 | /* The die_type call above may have already set the type for this DIE. */ | |
7552 | ftype = get_die_type (die, cu); | |
7553 | if (ftype) | |
7554 | return ftype; | |
7555 | ||
0c8b41f1 | 7556 | ftype = lookup_function_type (type); |
c906108c | 7557 | |
5b8101ae | 7558 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 7559 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 7560 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 7561 | || cu->language == language_cplus |
5b8101ae PM |
7562 | || cu->language == language_java |
7563 | || cu->language == language_pascal) | |
876cecd0 | 7564 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
7565 | else if (producer_is_realview (cu->producer)) |
7566 | /* RealView does not emit DW_AT_prototyped. We can not | |
7567 | distinguish prototyped and unprototyped functions; default to | |
7568 | prototyped, since that is more common in modern code (and | |
7569 | RealView warns about unprototyped functions). */ | |
7570 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 7571 | |
c055b101 CV |
7572 | /* Store the calling convention in the type if it's available in |
7573 | the subroutine die. Otherwise set the calling convention to | |
7574 | the default value DW_CC_normal. */ | |
7575 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
7576 | TYPE_CALLING_CONVENTION (ftype) = attr ? DW_UNSND (attr) : DW_CC_normal; | |
76c10ea2 GM |
7577 | |
7578 | /* We need to add the subroutine type to the die immediately so | |
7579 | we don't infinitely recurse when dealing with parameters | |
7580 | declared as the same subroutine type. */ | |
7581 | set_die_type (die, ftype, cu); | |
6e70227d | 7582 | |
639d11d3 | 7583 | if (die->child != NULL) |
c906108c | 7584 | { |
8072405b | 7585 | struct type *void_type = objfile_type (cu->objfile)->builtin_void; |
c906108c | 7586 | struct die_info *child_die; |
8072405b | 7587 | int nparams, iparams; |
c906108c SS |
7588 | |
7589 | /* Count the number of parameters. | |
7590 | FIXME: GDB currently ignores vararg functions, but knows about | |
7591 | vararg member functions. */ | |
8072405b | 7592 | nparams = 0; |
639d11d3 | 7593 | child_die = die->child; |
c906108c SS |
7594 | while (child_die && child_die->tag) |
7595 | { | |
7596 | if (child_die->tag == DW_TAG_formal_parameter) | |
7597 | nparams++; | |
7598 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 7599 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
7600 | child_die = sibling_die (child_die); |
7601 | } | |
7602 | ||
7603 | /* Allocate storage for parameters and fill them in. */ | |
7604 | TYPE_NFIELDS (ftype) = nparams; | |
7605 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 7606 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 7607 | |
8072405b JK |
7608 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
7609 | even if we error out during the parameters reading below. */ | |
7610 | for (iparams = 0; iparams < nparams; iparams++) | |
7611 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
7612 | ||
7613 | iparams = 0; | |
639d11d3 | 7614 | child_die = die->child; |
c906108c SS |
7615 | while (child_die && child_die->tag) |
7616 | { | |
7617 | if (child_die->tag == DW_TAG_formal_parameter) | |
7618 | { | |
3ce3b1ba PA |
7619 | struct type *arg_type; |
7620 | ||
7621 | /* DWARF version 2 has no clean way to discern C++ | |
7622 | static and non-static member functions. G++ helps | |
7623 | GDB by marking the first parameter for non-static | |
7624 | member functions (which is the this pointer) as | |
7625 | artificial. We pass this information to | |
7626 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
7627 | ||
7628 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
7629 | 4.5 does not yet generate. */ | |
e142c38c | 7630 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
7631 | if (attr) |
7632 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
7633 | else | |
418835cc KS |
7634 | { |
7635 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
7636 | ||
7637 | /* GCC/43521: In java, the formal parameter | |
7638 | "this" is sometimes not marked with DW_AT_artificial. */ | |
7639 | if (cu->language == language_java) | |
7640 | { | |
7641 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 7642 | |
418835cc KS |
7643 | if (name && !strcmp (name, "this")) |
7644 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
7645 | } | |
7646 | } | |
3ce3b1ba PA |
7647 | arg_type = die_type (child_die, cu); |
7648 | ||
7649 | /* RealView does not mark THIS as const, which the testsuite | |
7650 | expects. GCC marks THIS as const in method definitions, | |
7651 | but not in the class specifications (GCC PR 43053). */ | |
7652 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
7653 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
7654 | { | |
7655 | int is_this = 0; | |
7656 | struct dwarf2_cu *arg_cu = cu; | |
7657 | const char *name = dwarf2_name (child_die, cu); | |
7658 | ||
7659 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
7660 | if (attr) | |
7661 | { | |
7662 | /* If the compiler emits this, use it. */ | |
7663 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
7664 | is_this = 1; | |
7665 | } | |
7666 | else if (name && strcmp (name, "this") == 0) | |
7667 | /* Function definitions will have the argument names. */ | |
7668 | is_this = 1; | |
7669 | else if (name == NULL && iparams == 0) | |
7670 | /* Declarations may not have the names, so like | |
7671 | elsewhere in GDB, assume an artificial first | |
7672 | argument is "this". */ | |
7673 | is_this = 1; | |
7674 | ||
7675 | if (is_this) | |
7676 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
7677 | arg_type, 0); | |
7678 | } | |
7679 | ||
7680 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
7681 | iparams++; |
7682 | } | |
7683 | child_die = sibling_die (child_die); | |
7684 | } | |
7685 | } | |
7686 | ||
76c10ea2 | 7687 | return ftype; |
c906108c SS |
7688 | } |
7689 | ||
f792889a | 7690 | static struct type * |
e7c27a73 | 7691 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7692 | { |
e7c27a73 | 7693 | struct objfile *objfile = cu->objfile; |
0114d602 | 7694 | const char *name = NULL; |
f792889a | 7695 | struct type *this_type; |
c906108c | 7696 | |
94af9270 | 7697 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 7698 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
7699 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
7700 | TYPE_NAME (this_type) = (char *) name; | |
f792889a DJ |
7701 | set_die_type (die, this_type, cu); |
7702 | TYPE_TARGET_TYPE (this_type) = die_type (die, cu); | |
7703 | return this_type; | |
c906108c SS |
7704 | } |
7705 | ||
7706 | /* Find a representation of a given base type and install | |
7707 | it in the TYPE field of the die. */ | |
7708 | ||
f792889a | 7709 | static struct type * |
e7c27a73 | 7710 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7711 | { |
e7c27a73 | 7712 | struct objfile *objfile = cu->objfile; |
c906108c SS |
7713 | struct type *type; |
7714 | struct attribute *attr; | |
7715 | int encoding = 0, size = 0; | |
39cbfefa | 7716 | char *name; |
6ccb9162 UW |
7717 | enum type_code code = TYPE_CODE_INT; |
7718 | int type_flags = 0; | |
7719 | struct type *target_type = NULL; | |
c906108c | 7720 | |
e142c38c | 7721 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
7722 | if (attr) |
7723 | { | |
7724 | encoding = DW_UNSND (attr); | |
7725 | } | |
e142c38c | 7726 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7727 | if (attr) |
7728 | { | |
7729 | size = DW_UNSND (attr); | |
7730 | } | |
39cbfefa | 7731 | name = dwarf2_name (die, cu); |
6ccb9162 | 7732 | if (!name) |
c906108c | 7733 | { |
6ccb9162 UW |
7734 | complaint (&symfile_complaints, |
7735 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 7736 | } |
6ccb9162 UW |
7737 | |
7738 | switch (encoding) | |
c906108c | 7739 | { |
6ccb9162 UW |
7740 | case DW_ATE_address: |
7741 | /* Turn DW_ATE_address into a void * pointer. */ | |
7742 | code = TYPE_CODE_PTR; | |
7743 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7744 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
7745 | break; | |
7746 | case DW_ATE_boolean: | |
7747 | code = TYPE_CODE_BOOL; | |
7748 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7749 | break; | |
7750 | case DW_ATE_complex_float: | |
7751 | code = TYPE_CODE_COMPLEX; | |
7752 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
7753 | break; | |
7754 | case DW_ATE_decimal_float: | |
7755 | code = TYPE_CODE_DECFLOAT; | |
7756 | break; | |
7757 | case DW_ATE_float: | |
7758 | code = TYPE_CODE_FLT; | |
7759 | break; | |
7760 | case DW_ATE_signed: | |
7761 | break; | |
7762 | case DW_ATE_unsigned: | |
7763 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7764 | break; | |
7765 | case DW_ATE_signed_char: | |
6e70227d | 7766 | if (cu->language == language_ada || cu->language == language_m2 |
868a0084 | 7767 | || cu->language == language_pascal) |
6ccb9162 UW |
7768 | code = TYPE_CODE_CHAR; |
7769 | break; | |
7770 | case DW_ATE_unsigned_char: | |
868a0084 PM |
7771 | if (cu->language == language_ada || cu->language == language_m2 |
7772 | || cu->language == language_pascal) | |
6ccb9162 UW |
7773 | code = TYPE_CODE_CHAR; |
7774 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7775 | break; | |
75079b2b TT |
7776 | case DW_ATE_UTF: |
7777 | /* We just treat this as an integer and then recognize the | |
7778 | type by name elsewhere. */ | |
7779 | break; | |
7780 | ||
6ccb9162 UW |
7781 | default: |
7782 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
7783 | dwarf_type_encoding_name (encoding)); | |
7784 | break; | |
c906108c | 7785 | } |
6ccb9162 | 7786 | |
0114d602 DJ |
7787 | type = init_type (code, size, type_flags, NULL, objfile); |
7788 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
7789 | TYPE_TARGET_TYPE (type) = target_type; |
7790 | ||
0114d602 | 7791 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 7792 | TYPE_NOSIGN (type) = 1; |
0114d602 | 7793 | |
f792889a | 7794 | return set_die_type (die, type, cu); |
c906108c SS |
7795 | } |
7796 | ||
a02abb62 JB |
7797 | /* Read the given DW_AT_subrange DIE. */ |
7798 | ||
f792889a | 7799 | static struct type * |
a02abb62 JB |
7800 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
7801 | { | |
5e2b427d | 7802 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
a02abb62 JB |
7803 | struct type *base_type; |
7804 | struct type *range_type; | |
7805 | struct attribute *attr; | |
43bbcdc2 PH |
7806 | LONGEST low = 0; |
7807 | LONGEST high = -1; | |
39cbfefa | 7808 | char *name; |
43bbcdc2 | 7809 | LONGEST negative_mask; |
e77813c8 | 7810 | |
a02abb62 | 7811 | base_type = die_type (die, cu); |
953ac07e JK |
7812 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
7813 | check_typedef (base_type); | |
a02abb62 | 7814 | |
7e314c57 JK |
7815 | /* The die_type call above may have already set the type for this DIE. */ |
7816 | range_type = get_die_type (die, cu); | |
7817 | if (range_type) | |
7818 | return range_type; | |
7819 | ||
e142c38c | 7820 | if (cu->language == language_fortran) |
6e70227d | 7821 | { |
a02abb62 JB |
7822 | /* FORTRAN implies a lower bound of 1, if not given. */ |
7823 | low = 1; | |
7824 | } | |
7825 | ||
dd5e6932 DJ |
7826 | /* FIXME: For variable sized arrays either of these could be |
7827 | a variable rather than a constant value. We'll allow it, | |
7828 | but we don't know how to handle it. */ | |
e142c38c | 7829 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
7830 | if (attr) |
7831 | low = dwarf2_get_attr_constant_value (attr, 0); | |
7832 | ||
e142c38c | 7833 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 7834 | if (attr) |
6e70227d | 7835 | { |
e77813c8 | 7836 | if (attr->form == DW_FORM_block1 || is_ref_attr (attr)) |
a02abb62 JB |
7837 | { |
7838 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 7839 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
7840 | FIXME: GDB does not yet know how to handle dynamic |
7841 | arrays properly, treat them as arrays with unspecified | |
7842 | length for now. | |
7843 | ||
7844 | FIXME: jimb/2003-09-22: GDB does not really know | |
7845 | how to handle arrays of unspecified length | |
7846 | either; we just represent them as zero-length | |
7847 | arrays. Choose an appropriate upper bound given | |
7848 | the lower bound we've computed above. */ | |
7849 | high = low - 1; | |
7850 | } | |
7851 | else | |
7852 | high = dwarf2_get_attr_constant_value (attr, 1); | |
7853 | } | |
e77813c8 PM |
7854 | else |
7855 | { | |
7856 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
7857 | if (attr) | |
7858 | { | |
7859 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
7860 | high = low + count - 1; | |
7861 | } | |
7862 | } | |
7863 | ||
7864 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
7865 | without specifying a base type. | |
7866 | In that case, the base type must be set to the type of | |
7867 | the lower bound, upper bound or count, in that order, if any of these | |
7868 | three attributes references an object that has a type. | |
7869 | If no base type is found, the Dwarf-2 specifications say that | |
7870 | a signed integer type of size equal to the size of an address should | |
7871 | be used. | |
7872 | For the following C code: `extern char gdb_int [];' | |
7873 | GCC produces an empty range DIE. | |
7874 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
7875 | high bound or count are not yet handled by this code. | |
7876 | */ | |
7877 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
7878 | { | |
7879 | struct objfile *objfile = cu->objfile; | |
7880 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
7881 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
7882 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
7883 | ||
7884 | /* Test "int", "long int", and "long long int" objfile types, | |
7885 | and select the first one having a size above or equal to the | |
7886 | architecture address size. */ | |
7887 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
7888 | base_type = int_type; | |
7889 | else | |
7890 | { | |
7891 | int_type = objfile_type (objfile)->builtin_long; | |
7892 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
7893 | base_type = int_type; | |
7894 | else | |
7895 | { | |
7896 | int_type = objfile_type (objfile)->builtin_long_long; | |
7897 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
7898 | base_type = int_type; | |
7899 | } | |
7900 | } | |
7901 | } | |
a02abb62 | 7902 | |
6e70227d | 7903 | negative_mask = |
43bbcdc2 PH |
7904 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
7905 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
7906 | low |= negative_mask; | |
7907 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
7908 | high |= negative_mask; | |
7909 | ||
a02abb62 JB |
7910 | range_type = create_range_type (NULL, base_type, low, high); |
7911 | ||
bbb0eef6 JK |
7912 | /* Mark arrays with dynamic length at least as an array of unspecified |
7913 | length. GDB could check the boundary but before it gets implemented at | |
7914 | least allow accessing the array elements. */ | |
7915 | if (attr && attr->form == DW_FORM_block1) | |
7916 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
7917 | ||
39cbfefa DJ |
7918 | name = dwarf2_name (die, cu); |
7919 | if (name) | |
7920 | TYPE_NAME (range_type) = name; | |
6e70227d | 7921 | |
e142c38c | 7922 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
7923 | if (attr) |
7924 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
7925 | ||
7e314c57 JK |
7926 | set_die_type (die, range_type, cu); |
7927 | ||
7928 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
7929 | set_descriptive_type (range_type, die, cu); |
7930 | ||
7e314c57 | 7931 | return range_type; |
a02abb62 | 7932 | } |
6e70227d | 7933 | |
f792889a | 7934 | static struct type * |
81a17f79 JB |
7935 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
7936 | { | |
7937 | struct type *type; | |
81a17f79 | 7938 | |
81a17f79 JB |
7939 | /* For now, we only support the C meaning of an unspecified type: void. */ |
7940 | ||
0114d602 DJ |
7941 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
7942 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 7943 | |
f792889a | 7944 | return set_die_type (die, type, cu); |
81a17f79 | 7945 | } |
a02abb62 | 7946 | |
51545339 DJ |
7947 | /* Trivial hash function for die_info: the hash value of a DIE |
7948 | is its offset in .debug_info for this objfile. */ | |
7949 | ||
7950 | static hashval_t | |
7951 | die_hash (const void *item) | |
7952 | { | |
7953 | const struct die_info *die = item; | |
9a619af0 | 7954 | |
51545339 DJ |
7955 | return die->offset; |
7956 | } | |
7957 | ||
7958 | /* Trivial comparison function for die_info structures: two DIEs | |
7959 | are equal if they have the same offset. */ | |
7960 | ||
7961 | static int | |
7962 | die_eq (const void *item_lhs, const void *item_rhs) | |
7963 | { | |
7964 | const struct die_info *die_lhs = item_lhs; | |
7965 | const struct die_info *die_rhs = item_rhs; | |
9a619af0 | 7966 | |
51545339 DJ |
7967 | return die_lhs->offset == die_rhs->offset; |
7968 | } | |
7969 | ||
c906108c SS |
7970 | /* Read a whole compilation unit into a linked list of dies. */ |
7971 | ||
f9aca02d | 7972 | static struct die_info * |
93311388 | 7973 | read_comp_unit (gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 7974 | { |
93311388 | 7975 | struct die_reader_specs reader_specs; |
98bfdba5 | 7976 | int read_abbrevs = 0; |
1d9ec526 | 7977 | struct cleanup *back_to = NULL; |
98bfdba5 PA |
7978 | struct die_info *die; |
7979 | ||
7980 | if (cu->dwarf2_abbrevs == NULL) | |
7981 | { | |
7982 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
7983 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
7984 | read_abbrevs = 1; | |
7985 | } | |
93311388 | 7986 | |
348e048f | 7987 | gdb_assert (cu->die_hash == NULL); |
51545339 DJ |
7988 | cu->die_hash |
7989 | = htab_create_alloc_ex (cu->header.length / 12, | |
7990 | die_hash, | |
7991 | die_eq, | |
7992 | NULL, | |
7993 | &cu->comp_unit_obstack, | |
7994 | hashtab_obstack_allocate, | |
7995 | dummy_obstack_deallocate); | |
7996 | ||
93311388 DE |
7997 | init_cu_die_reader (&reader_specs, cu); |
7998 | ||
98bfdba5 PA |
7999 | die = read_die_and_children (&reader_specs, info_ptr, &info_ptr, NULL); |
8000 | ||
8001 | if (read_abbrevs) | |
8002 | do_cleanups (back_to); | |
8003 | ||
8004 | return die; | |
639d11d3 DC |
8005 | } |
8006 | ||
d97bc12b DE |
8007 | /* Main entry point for reading a DIE and all children. |
8008 | Read the DIE and dump it if requested. */ | |
8009 | ||
8010 | static struct die_info * | |
93311388 DE |
8011 | read_die_and_children (const struct die_reader_specs *reader, |
8012 | gdb_byte *info_ptr, | |
d97bc12b DE |
8013 | gdb_byte **new_info_ptr, |
8014 | struct die_info *parent) | |
8015 | { | |
93311388 | 8016 | struct die_info *result = read_die_and_children_1 (reader, info_ptr, |
d97bc12b DE |
8017 | new_info_ptr, parent); |
8018 | ||
8019 | if (dwarf2_die_debug) | |
8020 | { | |
348e048f DE |
8021 | fprintf_unfiltered (gdb_stdlog, |
8022 | "\nRead die from %s of %s:\n", | |
8023 | reader->buffer == dwarf2_per_objfile->info.buffer | |
8024 | ? ".debug_info" | |
8025 | : reader->buffer == dwarf2_per_objfile->types.buffer | |
8026 | ? ".debug_types" | |
8027 | : "unknown section", | |
8028 | reader->abfd->filename); | |
d97bc12b DE |
8029 | dump_die (result, dwarf2_die_debug); |
8030 | } | |
8031 | ||
8032 | return result; | |
8033 | } | |
8034 | ||
639d11d3 DC |
8035 | /* Read a single die and all its descendents. Set the die's sibling |
8036 | field to NULL; set other fields in the die correctly, and set all | |
8037 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
8038 | location of the info_ptr after reading all of those dies. PARENT | |
8039 | is the parent of the die in question. */ | |
8040 | ||
8041 | static struct die_info * | |
93311388 DE |
8042 | read_die_and_children_1 (const struct die_reader_specs *reader, |
8043 | gdb_byte *info_ptr, | |
d97bc12b DE |
8044 | gdb_byte **new_info_ptr, |
8045 | struct die_info *parent) | |
639d11d3 DC |
8046 | { |
8047 | struct die_info *die; | |
fe1b8b76 | 8048 | gdb_byte *cur_ptr; |
639d11d3 DC |
8049 | int has_children; |
8050 | ||
93311388 | 8051 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
8052 | if (die == NULL) |
8053 | { | |
8054 | *new_info_ptr = cur_ptr; | |
8055 | return NULL; | |
8056 | } | |
93311388 | 8057 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
8058 | |
8059 | if (has_children) | |
348e048f | 8060 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
8061 | else |
8062 | { | |
8063 | die->child = NULL; | |
8064 | *new_info_ptr = cur_ptr; | |
8065 | } | |
8066 | ||
8067 | die->sibling = NULL; | |
8068 | die->parent = parent; | |
8069 | return die; | |
8070 | } | |
8071 | ||
8072 | /* Read a die, all of its descendents, and all of its siblings; set | |
8073 | all of the fields of all of the dies correctly. Arguments are as | |
8074 | in read_die_and_children. */ | |
8075 | ||
8076 | static struct die_info * | |
93311388 DE |
8077 | read_die_and_siblings (const struct die_reader_specs *reader, |
8078 | gdb_byte *info_ptr, | |
fe1b8b76 | 8079 | gdb_byte **new_info_ptr, |
639d11d3 DC |
8080 | struct die_info *parent) |
8081 | { | |
8082 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 8083 | gdb_byte *cur_ptr; |
639d11d3 | 8084 | |
c906108c | 8085 | cur_ptr = info_ptr; |
639d11d3 DC |
8086 | first_die = last_sibling = NULL; |
8087 | ||
8088 | while (1) | |
c906108c | 8089 | { |
639d11d3 | 8090 | struct die_info *die |
93311388 | 8091 | = read_die_and_children_1 (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 8092 | |
1d325ec1 | 8093 | if (die == NULL) |
c906108c | 8094 | { |
639d11d3 DC |
8095 | *new_info_ptr = cur_ptr; |
8096 | return first_die; | |
c906108c | 8097 | } |
1d325ec1 DJ |
8098 | |
8099 | if (!first_die) | |
8100 | first_die = die; | |
c906108c | 8101 | else |
1d325ec1 DJ |
8102 | last_sibling->sibling = die; |
8103 | ||
8104 | last_sibling = die; | |
c906108c | 8105 | } |
c906108c SS |
8106 | } |
8107 | ||
93311388 DE |
8108 | /* Read the die from the .debug_info section buffer. Set DIEP to |
8109 | point to a newly allocated die with its information, except for its | |
8110 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
8111 | whether the die has children or not. */ | |
8112 | ||
8113 | static gdb_byte * | |
8114 | read_full_die (const struct die_reader_specs *reader, | |
8115 | struct die_info **diep, gdb_byte *info_ptr, | |
8116 | int *has_children) | |
8117 | { | |
8118 | unsigned int abbrev_number, bytes_read, i, offset; | |
8119 | struct abbrev_info *abbrev; | |
8120 | struct die_info *die; | |
8121 | struct dwarf2_cu *cu = reader->cu; | |
8122 | bfd *abfd = reader->abfd; | |
8123 | ||
8124 | offset = info_ptr - reader->buffer; | |
8125 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8126 | info_ptr += bytes_read; | |
8127 | if (!abbrev_number) | |
8128 | { | |
8129 | *diep = NULL; | |
8130 | *has_children = 0; | |
8131 | return info_ptr; | |
8132 | } | |
8133 | ||
8134 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
8135 | if (!abbrev) | |
348e048f DE |
8136 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
8137 | abbrev_number, | |
8138 | bfd_get_filename (abfd)); | |
8139 | ||
93311388 DE |
8140 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
8141 | die->offset = offset; | |
8142 | die->tag = abbrev->tag; | |
8143 | die->abbrev = abbrev_number; | |
8144 | ||
8145 | die->num_attrs = abbrev->num_attrs; | |
8146 | ||
8147 | for (i = 0; i < abbrev->num_attrs; ++i) | |
8148 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
8149 | abfd, info_ptr, cu); | |
8150 | ||
8151 | *diep = die; | |
8152 | *has_children = abbrev->has_children; | |
8153 | return info_ptr; | |
8154 | } | |
8155 | ||
c906108c SS |
8156 | /* In DWARF version 2, the description of the debugging information is |
8157 | stored in a separate .debug_abbrev section. Before we read any | |
8158 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
8159 | in a hash table. This function also sets flags in CU describing |
8160 | the data found in the abbrev table. */ | |
c906108c SS |
8161 | |
8162 | static void | |
e7c27a73 | 8163 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 8164 | { |
e7c27a73 | 8165 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 8166 | gdb_byte *abbrev_ptr; |
c906108c SS |
8167 | struct abbrev_info *cur_abbrev; |
8168 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
8169 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
8170 | struct attr_abbrev *cur_attrs; |
8171 | unsigned int allocated_attrs; | |
c906108c | 8172 | |
57349743 | 8173 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
8174 | obstack_init (&cu->abbrev_obstack); |
8175 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
8176 | (ABBREV_HASH_SIZE | |
8177 | * sizeof (struct abbrev_info *))); | |
8178 | memset (cu->dwarf2_abbrevs, 0, | |
8179 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 8180 | |
be391dca TT |
8181 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
8182 | &dwarf2_per_objfile->abbrev); | |
dce234bc | 8183 | abbrev_ptr = dwarf2_per_objfile->abbrev.buffer + cu_header->abbrev_offset; |
c906108c SS |
8184 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8185 | abbrev_ptr += bytes_read; | |
8186 | ||
f3dd6933 DJ |
8187 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8188 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 8189 | |
c906108c SS |
8190 | /* loop until we reach an abbrev number of 0 */ |
8191 | while (abbrev_number) | |
8192 | { | |
f3dd6933 | 8193 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
8194 | |
8195 | /* read in abbrev header */ | |
8196 | cur_abbrev->number = abbrev_number; | |
8197 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8198 | abbrev_ptr += bytes_read; | |
8199 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
8200 | abbrev_ptr += 1; | |
8201 | ||
72bf9492 DJ |
8202 | if (cur_abbrev->tag == DW_TAG_namespace) |
8203 | cu->has_namespace_info = 1; | |
8204 | ||
c906108c SS |
8205 | /* now read in declarations */ |
8206 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8207 | abbrev_ptr += bytes_read; | |
8208 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8209 | abbrev_ptr += bytes_read; | |
8210 | while (abbrev_name) | |
8211 | { | |
f3dd6933 | 8212 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 8213 | { |
f3dd6933 DJ |
8214 | allocated_attrs += ATTR_ALLOC_CHUNK; |
8215 | cur_attrs | |
8216 | = xrealloc (cur_attrs, (allocated_attrs | |
8217 | * sizeof (struct attr_abbrev))); | |
c906108c | 8218 | } |
ae038cb0 DJ |
8219 | |
8220 | /* Record whether this compilation unit might have | |
8221 | inter-compilation-unit references. If we don't know what form | |
8222 | this attribute will have, then it might potentially be a | |
8223 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
8224 | references. */ | |
8225 | ||
8226 | if (abbrev_form == DW_FORM_ref_addr | |
8227 | || abbrev_form == DW_FORM_indirect) | |
8228 | cu->has_form_ref_addr = 1; | |
8229 | ||
f3dd6933 DJ |
8230 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
8231 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
8232 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
8233 | abbrev_ptr += bytes_read; | |
8234 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8235 | abbrev_ptr += bytes_read; | |
8236 | } | |
8237 | ||
f3dd6933 DJ |
8238 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
8239 | (cur_abbrev->num_attrs | |
8240 | * sizeof (struct attr_abbrev))); | |
8241 | memcpy (cur_abbrev->attrs, cur_attrs, | |
8242 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
8243 | ||
c906108c | 8244 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
8245 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
8246 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
8247 | |
8248 | /* Get next abbreviation. | |
8249 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
8250 | always properly terminated with an abbrev number of 0. |
8251 | Exit loop if we encounter an abbreviation which we have | |
8252 | already read (which means we are about to read the abbreviations | |
8253 | for the next compile unit) or if the end of the abbreviation | |
8254 | table is reached. */ | |
dce234bc PP |
8255 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev.buffer) |
8256 | >= dwarf2_per_objfile->abbrev.size) | |
c906108c SS |
8257 | break; |
8258 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
8259 | abbrev_ptr += bytes_read; | |
e7c27a73 | 8260 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
8261 | break; |
8262 | } | |
f3dd6933 DJ |
8263 | |
8264 | xfree (cur_attrs); | |
c906108c SS |
8265 | } |
8266 | ||
f3dd6933 | 8267 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 8268 | |
c906108c | 8269 | static void |
f3dd6933 | 8270 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 8271 | { |
f3dd6933 | 8272 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 8273 | |
f3dd6933 DJ |
8274 | obstack_free (&cu->abbrev_obstack, NULL); |
8275 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
8276 | } |
8277 | ||
8278 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
8279 | ||
8280 | static struct abbrev_info * | |
e7c27a73 | 8281 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
8282 | { |
8283 | unsigned int hash_number; | |
8284 | struct abbrev_info *abbrev; | |
8285 | ||
8286 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 8287 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
8288 | |
8289 | while (abbrev) | |
8290 | { | |
8291 | if (abbrev->number == number) | |
8292 | return abbrev; | |
8293 | else | |
8294 | abbrev = abbrev->next; | |
8295 | } | |
8296 | return NULL; | |
8297 | } | |
8298 | ||
72bf9492 DJ |
8299 | /* Returns nonzero if TAG represents a type that we might generate a partial |
8300 | symbol for. */ | |
8301 | ||
8302 | static int | |
8303 | is_type_tag_for_partial (int tag) | |
8304 | { | |
8305 | switch (tag) | |
8306 | { | |
8307 | #if 0 | |
8308 | /* Some types that would be reasonable to generate partial symbols for, | |
8309 | that we don't at present. */ | |
8310 | case DW_TAG_array_type: | |
8311 | case DW_TAG_file_type: | |
8312 | case DW_TAG_ptr_to_member_type: | |
8313 | case DW_TAG_set_type: | |
8314 | case DW_TAG_string_type: | |
8315 | case DW_TAG_subroutine_type: | |
8316 | #endif | |
8317 | case DW_TAG_base_type: | |
8318 | case DW_TAG_class_type: | |
680b30c7 | 8319 | case DW_TAG_interface_type: |
72bf9492 DJ |
8320 | case DW_TAG_enumeration_type: |
8321 | case DW_TAG_structure_type: | |
8322 | case DW_TAG_subrange_type: | |
8323 | case DW_TAG_typedef: | |
8324 | case DW_TAG_union_type: | |
8325 | return 1; | |
8326 | default: | |
8327 | return 0; | |
8328 | } | |
8329 | } | |
8330 | ||
8331 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
8332 | ||
8333 | static struct partial_die_info * | |
93311388 DE |
8334 | load_partial_dies (bfd *abfd, gdb_byte *buffer, gdb_byte *info_ptr, |
8335 | int building_psymtab, struct dwarf2_cu *cu) | |
72bf9492 DJ |
8336 | { |
8337 | struct partial_die_info *part_die; | |
8338 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
8339 | struct abbrev_info *abbrev; | |
8340 | unsigned int bytes_read; | |
5afb4e99 | 8341 | unsigned int load_all = 0; |
72bf9492 DJ |
8342 | |
8343 | int nesting_level = 1; | |
8344 | ||
8345 | parent_die = NULL; | |
8346 | last_die = NULL; | |
8347 | ||
5afb4e99 DJ |
8348 | if (cu->per_cu && cu->per_cu->load_all_dies) |
8349 | load_all = 1; | |
8350 | ||
72bf9492 DJ |
8351 | cu->partial_dies |
8352 | = htab_create_alloc_ex (cu->header.length / 12, | |
8353 | partial_die_hash, | |
8354 | partial_die_eq, | |
8355 | NULL, | |
8356 | &cu->comp_unit_obstack, | |
8357 | hashtab_obstack_allocate, | |
8358 | dummy_obstack_deallocate); | |
8359 | ||
8360 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
8361 | sizeof (struct partial_die_info)); | |
8362 | ||
8363 | while (1) | |
8364 | { | |
8365 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
8366 | ||
8367 | /* A NULL abbrev means the end of a series of children. */ | |
8368 | if (abbrev == NULL) | |
8369 | { | |
8370 | if (--nesting_level == 0) | |
8371 | { | |
8372 | /* PART_DIE was probably the last thing allocated on the | |
8373 | comp_unit_obstack, so we could call obstack_free | |
8374 | here. We don't do that because the waste is small, | |
8375 | and will be cleaned up when we're done with this | |
8376 | compilation unit. This way, we're also more robust | |
8377 | against other users of the comp_unit_obstack. */ | |
8378 | return first_die; | |
8379 | } | |
8380 | info_ptr += bytes_read; | |
8381 | last_die = parent_die; | |
8382 | parent_die = parent_die->die_parent; | |
8383 | continue; | |
8384 | } | |
8385 | ||
98bfdba5 PA |
8386 | /* Check for template arguments. We never save these; if |
8387 | they're seen, we just mark the parent, and go on our way. */ | |
8388 | if (parent_die != NULL | |
8389 | && cu->language == language_cplus | |
8390 | && (abbrev->tag == DW_TAG_template_type_param | |
8391 | || abbrev->tag == DW_TAG_template_value_param)) | |
8392 | { | |
8393 | parent_die->has_template_arguments = 1; | |
8394 | ||
8395 | if (!load_all) | |
8396 | { | |
8397 | /* We don't need a partial DIE for the template argument. */ | |
8398 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, | |
8399 | cu); | |
8400 | continue; | |
8401 | } | |
8402 | } | |
8403 | ||
8404 | /* We only recurse into subprograms looking for template arguments. | |
8405 | Skip their other children. */ | |
8406 | if (!load_all | |
8407 | && cu->language == language_cplus | |
8408 | && parent_die != NULL | |
8409 | && parent_die->tag == DW_TAG_subprogram) | |
8410 | { | |
8411 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); | |
8412 | continue; | |
8413 | } | |
8414 | ||
5afb4e99 DJ |
8415 | /* Check whether this DIE is interesting enough to save. Normally |
8416 | we would not be interested in members here, but there may be | |
8417 | later variables referencing them via DW_AT_specification (for | |
8418 | static members). */ | |
8419 | if (!load_all | |
8420 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
8421 | && abbrev->tag != DW_TAG_enumerator |
8422 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 8423 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 8424 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 8425 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 8426 | && abbrev->tag != DW_TAG_module |
5afb4e99 | 8427 | && abbrev->tag != DW_TAG_member) |
72bf9492 DJ |
8428 | { |
8429 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 8430 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
72bf9492 DJ |
8431 | continue; |
8432 | } | |
8433 | ||
93311388 DE |
8434 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, abfd, |
8435 | buffer, info_ptr, cu); | |
72bf9492 DJ |
8436 | |
8437 | /* This two-pass algorithm for processing partial symbols has a | |
8438 | high cost in cache pressure. Thus, handle some simple cases | |
8439 | here which cover the majority of C partial symbols. DIEs | |
8440 | which neither have specification tags in them, nor could have | |
8441 | specification tags elsewhere pointing at them, can simply be | |
8442 | processed and discarded. | |
8443 | ||
8444 | This segment is also optional; scan_partial_symbols and | |
8445 | add_partial_symbol will handle these DIEs if we chain | |
8446 | them in normally. When compilers which do not emit large | |
8447 | quantities of duplicate debug information are more common, | |
8448 | this code can probably be removed. */ | |
8449 | ||
8450 | /* Any complete simple types at the top level (pretty much all | |
8451 | of them, for a language without namespaces), can be processed | |
8452 | directly. */ | |
8453 | if (parent_die == NULL | |
8454 | && part_die->has_specification == 0 | |
8455 | && part_die->is_declaration == 0 | |
8456 | && (part_die->tag == DW_TAG_typedef | |
8457 | || part_die->tag == DW_TAG_base_type | |
8458 | || part_die->tag == DW_TAG_subrange_type)) | |
8459 | { | |
8460 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 8461 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 DJ |
8462 | VAR_DOMAIN, LOC_TYPEDEF, |
8463 | &cu->objfile->static_psymbols, | |
8464 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
93311388 | 8465 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8466 | continue; |
8467 | } | |
8468 | ||
8469 | /* If we're at the second level, and we're an enumerator, and | |
8470 | our parent has no specification (meaning possibly lives in a | |
8471 | namespace elsewhere), then we can add the partial symbol now | |
8472 | instead of queueing it. */ | |
8473 | if (part_die->tag == DW_TAG_enumerator | |
8474 | && parent_die != NULL | |
8475 | && parent_die->die_parent == NULL | |
8476 | && parent_die->tag == DW_TAG_enumeration_type | |
8477 | && parent_die->has_specification == 0) | |
8478 | { | |
8479 | if (part_die->name == NULL) | |
e2e0b3e5 | 8480 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 | 8481 | else if (building_psymtab) |
04a679b8 | 8482 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 8483 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
8484 | (cu->language == language_cplus |
8485 | || cu->language == language_java) | |
72bf9492 DJ |
8486 | ? &cu->objfile->global_psymbols |
8487 | : &cu->objfile->static_psymbols, | |
8488 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
8489 | ||
93311388 | 8490 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8491 | continue; |
8492 | } | |
8493 | ||
8494 | /* We'll save this DIE so link it in. */ | |
8495 | part_die->die_parent = parent_die; | |
8496 | part_die->die_sibling = NULL; | |
8497 | part_die->die_child = NULL; | |
8498 | ||
8499 | if (last_die && last_die == parent_die) | |
8500 | last_die->die_child = part_die; | |
8501 | else if (last_die) | |
8502 | last_die->die_sibling = part_die; | |
8503 | ||
8504 | last_die = part_die; | |
8505 | ||
8506 | if (first_die == NULL) | |
8507 | first_die = part_die; | |
8508 | ||
8509 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
8510 | find interesting need to be in the hash table, because we | |
8511 | also have the parent/sibling/child chains; only those that we | |
8512 | might refer to by offset later during partial symbol reading. | |
8513 | ||
8514 | For now this means things that might have be the target of a | |
8515 | DW_AT_specification, DW_AT_abstract_origin, or | |
8516 | DW_AT_extension. DW_AT_extension will refer only to | |
8517 | namespaces; DW_AT_abstract_origin refers to functions (and | |
8518 | many things under the function DIE, but we do not recurse | |
8519 | into function DIEs during partial symbol reading) and | |
8520 | possibly variables as well; DW_AT_specification refers to | |
8521 | declarations. Declarations ought to have the DW_AT_declaration | |
8522 | flag. It happens that GCC forgets to put it in sometimes, but | |
8523 | only for functions, not for types. | |
8524 | ||
8525 | Adding more things than necessary to the hash table is harmless | |
8526 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
8527 | wasted time in find_partial_die, when we reread the compilation |
8528 | unit with load_all_dies set. */ | |
72bf9492 | 8529 | |
5afb4e99 DJ |
8530 | if (load_all |
8531 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
8532 | || abbrev->tag == DW_TAG_variable |
8533 | || abbrev->tag == DW_TAG_namespace | |
8534 | || part_die->is_declaration) | |
8535 | { | |
8536 | void **slot; | |
8537 | ||
8538 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
8539 | part_die->offset, INSERT); | |
8540 | *slot = part_die; | |
8541 | } | |
8542 | ||
8543 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
8544 | sizeof (struct partial_die_info)); | |
8545 | ||
8546 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 8547 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
8548 | languages we have to, so that we can get at method physnames |
8549 | to infer fully qualified class names, for DW_AT_specification, | |
8550 | and for C++ template arguments. For C++, we also look one level | |
8551 | inside functions to find template arguments (if the name of the | |
8552 | function does not already contain the template arguments). | |
bc30ff58 JB |
8553 | |
8554 | For Ada, we need to scan the children of subprograms and lexical | |
8555 | blocks as well because Ada allows the definition of nested | |
8556 | entities that could be interesting for the debugger, such as | |
8557 | nested subprograms for instance. */ | |
72bf9492 | 8558 | if (last_die->has_children |
5afb4e99 DJ |
8559 | && (load_all |
8560 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 8561 | || last_die->tag == DW_TAG_module |
72bf9492 | 8562 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
8563 | || (cu->language == language_cplus |
8564 | && last_die->tag == DW_TAG_subprogram | |
8565 | && (last_die->name == NULL | |
8566 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
8567 | || (cu->language != language_c |
8568 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 8569 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 8570 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
8571 | || last_die->tag == DW_TAG_union_type)) |
8572 | || (cu->language == language_ada | |
8573 | && (last_die->tag == DW_TAG_subprogram | |
8574 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
8575 | { |
8576 | nesting_level++; | |
8577 | parent_die = last_die; | |
8578 | continue; | |
8579 | } | |
8580 | ||
8581 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 8582 | info_ptr = locate_pdi_sibling (last_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8583 | |
8584 | /* Back to the top, do it again. */ | |
8585 | } | |
8586 | } | |
8587 | ||
c906108c SS |
8588 | /* Read a minimal amount of information into the minimal die structure. */ |
8589 | ||
fe1b8b76 | 8590 | static gdb_byte * |
72bf9492 DJ |
8591 | read_partial_die (struct partial_die_info *part_die, |
8592 | struct abbrev_info *abbrev, | |
8593 | unsigned int abbrev_len, bfd *abfd, | |
93311388 DE |
8594 | gdb_byte *buffer, gdb_byte *info_ptr, |
8595 | struct dwarf2_cu *cu) | |
c906108c | 8596 | { |
fa238c03 | 8597 | unsigned int i; |
c906108c | 8598 | struct attribute attr; |
c5aa993b | 8599 | int has_low_pc_attr = 0; |
c906108c SS |
8600 | int has_high_pc_attr = 0; |
8601 | ||
72bf9492 | 8602 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 8603 | |
93311388 | 8604 | part_die->offset = info_ptr - buffer; |
72bf9492 DJ |
8605 | |
8606 | info_ptr += abbrev_len; | |
8607 | ||
8608 | if (abbrev == NULL) | |
8609 | return info_ptr; | |
8610 | ||
c906108c SS |
8611 | part_die->tag = abbrev->tag; |
8612 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
8613 | |
8614 | for (i = 0; i < abbrev->num_attrs; ++i) | |
8615 | { | |
e7c27a73 | 8616 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
8617 | |
8618 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 8619 | partial symbol table. */ |
c906108c SS |
8620 | switch (attr.name) |
8621 | { | |
8622 | case DW_AT_name: | |
71c25dea TT |
8623 | switch (part_die->tag) |
8624 | { | |
8625 | case DW_TAG_compile_unit: | |
348e048f | 8626 | case DW_TAG_type_unit: |
71c25dea TT |
8627 | /* Compilation units have a DW_AT_name that is a filename, not |
8628 | a source language identifier. */ | |
8629 | case DW_TAG_enumeration_type: | |
8630 | case DW_TAG_enumerator: | |
8631 | /* These tags always have simple identifiers already; no need | |
8632 | to canonicalize them. */ | |
8633 | part_die->name = DW_STRING (&attr); | |
8634 | break; | |
8635 | default: | |
8636 | part_die->name | |
8637 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
95519e0e | 8638 | &cu->objfile->objfile_obstack); |
71c25dea TT |
8639 | break; |
8640 | } | |
c906108c | 8641 | break; |
31ef98ae | 8642 | case DW_AT_linkage_name: |
c906108c | 8643 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
8644 | /* Note that both forms of linkage name might appear. We |
8645 | assume they will be the same, and we only store the last | |
8646 | one we see. */ | |
94af9270 KS |
8647 | if (cu->language == language_ada) |
8648 | part_die->name = DW_STRING (&attr); | |
c906108c SS |
8649 | break; |
8650 | case DW_AT_low_pc: | |
8651 | has_low_pc_attr = 1; | |
8652 | part_die->lowpc = DW_ADDR (&attr); | |
8653 | break; | |
8654 | case DW_AT_high_pc: | |
8655 | has_high_pc_attr = 1; | |
8656 | part_die->highpc = DW_ADDR (&attr); | |
8657 | break; | |
8658 | case DW_AT_location: | |
8e19ed76 PS |
8659 | /* Support the .debug_loc offsets */ |
8660 | if (attr_form_is_block (&attr)) | |
8661 | { | |
8662 | part_die->locdesc = DW_BLOCK (&attr); | |
8663 | } | |
3690dd37 | 8664 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 8665 | { |
4d3c2250 | 8666 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
8667 | } |
8668 | else | |
8669 | { | |
4d3c2250 KB |
8670 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
8671 | "partial symbol information"); | |
8e19ed76 | 8672 | } |
c906108c | 8673 | break; |
c906108c SS |
8674 | case DW_AT_external: |
8675 | part_die->is_external = DW_UNSND (&attr); | |
8676 | break; | |
8677 | case DW_AT_declaration: | |
8678 | part_die->is_declaration = DW_UNSND (&attr); | |
8679 | break; | |
8680 | case DW_AT_type: | |
8681 | part_die->has_type = 1; | |
8682 | break; | |
8683 | case DW_AT_abstract_origin: | |
8684 | case DW_AT_specification: | |
72bf9492 DJ |
8685 | case DW_AT_extension: |
8686 | part_die->has_specification = 1; | |
c764a876 | 8687 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
8688 | break; |
8689 | case DW_AT_sibling: | |
8690 | /* Ignore absolute siblings, they might point outside of | |
8691 | the current compile unit. */ | |
8692 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 8693 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 8694 | else |
93311388 | 8695 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr); |
c906108c | 8696 | break; |
fa4028e9 JB |
8697 | case DW_AT_byte_size: |
8698 | part_die->has_byte_size = 1; | |
8699 | break; | |
68511cec CES |
8700 | case DW_AT_calling_convention: |
8701 | /* DWARF doesn't provide a way to identify a program's source-level | |
8702 | entry point. DW_AT_calling_convention attributes are only meant | |
8703 | to describe functions' calling conventions. | |
8704 | ||
8705 | However, because it's a necessary piece of information in | |
8706 | Fortran, and because DW_CC_program is the only piece of debugging | |
8707 | information whose definition refers to a 'main program' at all, | |
8708 | several compilers have begun marking Fortran main programs with | |
8709 | DW_CC_program --- even when those functions use the standard | |
8710 | calling conventions. | |
8711 | ||
8712 | So until DWARF specifies a way to provide this information and | |
8713 | compilers pick up the new representation, we'll support this | |
8714 | practice. */ | |
8715 | if (DW_UNSND (&attr) == DW_CC_program | |
8716 | && cu->language == language_fortran) | |
8717 | set_main_name (part_die->name); | |
8718 | break; | |
c906108c SS |
8719 | default: |
8720 | break; | |
8721 | } | |
8722 | } | |
8723 | ||
c906108c SS |
8724 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
8725 | eliminate duplicate copies of functions and vtables and such. | |
8726 | The linker will arbitrarily choose one and discard the others. | |
8727 | The AT_*_pc values for such functions refer to local labels in | |
8728 | these sections. If the section from that file was discarded, the | |
8729 | labels are not in the output, so the relocs get a value of 0. | |
8730 | If this is a discarded function, mark the pc bounds as invalid, | |
8731 | so that GDB will ignore it. */ | |
8732 | if (has_low_pc_attr && has_high_pc_attr | |
8733 | && part_die->lowpc < part_die->highpc | |
8734 | && (part_die->lowpc != 0 | |
72dca2f5 | 8735 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 8736 | part_die->has_pc_info = 1; |
85cbf3d3 | 8737 | |
c906108c SS |
8738 | return info_ptr; |
8739 | } | |
8740 | ||
72bf9492 DJ |
8741 | /* Find a cached partial DIE at OFFSET in CU. */ |
8742 | ||
8743 | static struct partial_die_info * | |
c764a876 | 8744 | find_partial_die_in_comp_unit (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
8745 | { |
8746 | struct partial_die_info *lookup_die = NULL; | |
8747 | struct partial_die_info part_die; | |
8748 | ||
8749 | part_die.offset = offset; | |
8750 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
8751 | ||
72bf9492 DJ |
8752 | return lookup_die; |
8753 | } | |
8754 | ||
348e048f DE |
8755 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
8756 | except in the case of .debug_types DIEs which do not reference | |
8757 | outside their CU (they do however referencing other types via | |
8758 | DW_FORM_sig8). */ | |
72bf9492 DJ |
8759 | |
8760 | static struct partial_die_info * | |
c764a876 | 8761 | find_partial_die (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 | 8762 | { |
5afb4e99 DJ |
8763 | struct dwarf2_per_cu_data *per_cu = NULL; |
8764 | struct partial_die_info *pd = NULL; | |
72bf9492 | 8765 | |
348e048f DE |
8766 | if (cu->per_cu->from_debug_types) |
8767 | { | |
8768 | pd = find_partial_die_in_comp_unit (offset, cu); | |
8769 | if (pd != NULL) | |
8770 | return pd; | |
8771 | goto not_found; | |
8772 | } | |
8773 | ||
45452591 | 8774 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
8775 | { |
8776 | pd = find_partial_die_in_comp_unit (offset, cu); | |
8777 | if (pd != NULL) | |
8778 | return pd; | |
8779 | } | |
72bf9492 | 8780 | |
ae038cb0 DJ |
8781 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
8782 | ||
98bfdba5 PA |
8783 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
8784 | load_partial_comp_unit (per_cu, cu->objfile); | |
ae038cb0 DJ |
8785 | |
8786 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
8787 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
8788 | ||
8789 | if (pd == NULL && per_cu->load_all_dies == 0) | |
8790 | { | |
8791 | struct cleanup *back_to; | |
8792 | struct partial_die_info comp_unit_die; | |
8793 | struct abbrev_info *abbrev; | |
8794 | unsigned int bytes_read; | |
8795 | char *info_ptr; | |
8796 | ||
8797 | per_cu->load_all_dies = 1; | |
8798 | ||
8799 | /* Re-read the DIEs. */ | |
8800 | back_to = make_cleanup (null_cleanup, 0); | |
8801 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
8802 | { | |
8803 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
53d72f98 | 8804 | make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); |
5afb4e99 | 8805 | } |
dce234bc | 8806 | info_ptr = (dwarf2_per_objfile->info.buffer |
d00adf39 DE |
8807 | + per_cu->cu->header.offset |
8808 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
8809 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
8810 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
93311388 DE |
8811 | per_cu->cu->objfile->obfd, |
8812 | dwarf2_per_objfile->info.buffer, info_ptr, | |
5afb4e99 DJ |
8813 | per_cu->cu); |
8814 | if (comp_unit_die.has_children) | |
93311388 DE |
8815 | load_partial_dies (per_cu->cu->objfile->obfd, |
8816 | dwarf2_per_objfile->info.buffer, info_ptr, | |
8817 | 0, per_cu->cu); | |
5afb4e99 DJ |
8818 | do_cleanups (back_to); |
8819 | ||
8820 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
8821 | } | |
8822 | ||
348e048f DE |
8823 | not_found: |
8824 | ||
5afb4e99 DJ |
8825 | if (pd == NULL) |
8826 | internal_error (__FILE__, __LINE__, | |
c764a876 | 8827 | _("could not find partial DIE 0x%x in cache [from module %s]\n"), |
5afb4e99 DJ |
8828 | offset, bfd_get_filename (cu->objfile->obfd)); |
8829 | return pd; | |
72bf9492 DJ |
8830 | } |
8831 | ||
8832 | /* Adjust PART_DIE before generating a symbol for it. This function | |
8833 | may set the is_external flag or change the DIE's name. */ | |
8834 | ||
8835 | static void | |
8836 | fixup_partial_die (struct partial_die_info *part_die, | |
8837 | struct dwarf2_cu *cu) | |
8838 | { | |
8839 | /* If we found a reference attribute and the DIE has no name, try | |
8840 | to find a name in the referred to DIE. */ | |
8841 | ||
8842 | if (part_die->name == NULL && part_die->has_specification) | |
8843 | { | |
8844 | struct partial_die_info *spec_die; | |
72bf9492 | 8845 | |
10b3939b | 8846 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 8847 | |
10b3939b | 8848 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
8849 | |
8850 | if (spec_die->name) | |
8851 | { | |
8852 | part_die->name = spec_die->name; | |
8853 | ||
8854 | /* Copy DW_AT_external attribute if it is set. */ | |
8855 | if (spec_die->is_external) | |
8856 | part_die->is_external = spec_die->is_external; | |
8857 | } | |
8858 | } | |
8859 | ||
8860 | /* Set default names for some unnamed DIEs. */ | |
8861 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
8862 | || part_die->tag == DW_TAG_class_type)) | |
8863 | part_die->name = "(anonymous class)"; | |
8864 | ||
8865 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
8866 | part_die->name = "(anonymous namespace)"; | |
8867 | ||
8868 | if (part_die->tag == DW_TAG_structure_type | |
8869 | || part_die->tag == DW_TAG_class_type | |
8870 | || part_die->tag == DW_TAG_union_type) | |
8871 | guess_structure_name (part_die, cu); | |
8872 | } | |
8873 | ||
a8329558 | 8874 | /* Read an attribute value described by an attribute form. */ |
c906108c | 8875 | |
fe1b8b76 | 8876 | static gdb_byte * |
a8329558 | 8877 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 8878 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 8879 | struct dwarf2_cu *cu) |
c906108c | 8880 | { |
e7c27a73 | 8881 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
8882 | unsigned int bytes_read; |
8883 | struct dwarf_block *blk; | |
8884 | ||
a8329558 KW |
8885 | attr->form = form; |
8886 | switch (form) | |
c906108c | 8887 | { |
c906108c | 8888 | case DW_FORM_ref_addr: |
ae411497 TT |
8889 | if (cu->header.version == 2) |
8890 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); | |
8891 | else | |
8892 | DW_ADDR (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
8893 | info_ptr += bytes_read; | |
8894 | break; | |
8895 | case DW_FORM_addr: | |
e7c27a73 | 8896 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 8897 | info_ptr += bytes_read; |
c906108c SS |
8898 | break; |
8899 | case DW_FORM_block2: | |
7b5a2f43 | 8900 | blk = dwarf_alloc_block (cu); |
c906108c SS |
8901 | blk->size = read_2_bytes (abfd, info_ptr); |
8902 | info_ptr += 2; | |
8903 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
8904 | info_ptr += blk->size; | |
8905 | DW_BLOCK (attr) = blk; | |
8906 | break; | |
8907 | case DW_FORM_block4: | |
7b5a2f43 | 8908 | blk = dwarf_alloc_block (cu); |
c906108c SS |
8909 | blk->size = read_4_bytes (abfd, info_ptr); |
8910 | info_ptr += 4; | |
8911 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
8912 | info_ptr += blk->size; | |
8913 | DW_BLOCK (attr) = blk; | |
8914 | break; | |
8915 | case DW_FORM_data2: | |
8916 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
8917 | info_ptr += 2; | |
8918 | break; | |
8919 | case DW_FORM_data4: | |
8920 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
8921 | info_ptr += 4; | |
8922 | break; | |
8923 | case DW_FORM_data8: | |
8924 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
8925 | info_ptr += 8; | |
8926 | break; | |
2dc7f7b3 TT |
8927 | case DW_FORM_sec_offset: |
8928 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
8929 | info_ptr += bytes_read; | |
8930 | break; | |
c906108c | 8931 | case DW_FORM_string: |
9b1c24c8 | 8932 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 8933 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
8934 | info_ptr += bytes_read; |
8935 | break; | |
4bdf3d34 JJ |
8936 | case DW_FORM_strp: |
8937 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
8938 | &bytes_read); | |
8285870a | 8939 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
8940 | info_ptr += bytes_read; |
8941 | break; | |
2dc7f7b3 | 8942 | case DW_FORM_exprloc: |
c906108c | 8943 | case DW_FORM_block: |
7b5a2f43 | 8944 | blk = dwarf_alloc_block (cu); |
c906108c SS |
8945 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
8946 | info_ptr += bytes_read; | |
8947 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
8948 | info_ptr += blk->size; | |
8949 | DW_BLOCK (attr) = blk; | |
8950 | break; | |
8951 | case DW_FORM_block1: | |
7b5a2f43 | 8952 | blk = dwarf_alloc_block (cu); |
c906108c SS |
8953 | blk->size = read_1_byte (abfd, info_ptr); |
8954 | info_ptr += 1; | |
8955 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
8956 | info_ptr += blk->size; | |
8957 | DW_BLOCK (attr) = blk; | |
8958 | break; | |
8959 | case DW_FORM_data1: | |
8960 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
8961 | info_ptr += 1; | |
8962 | break; | |
8963 | case DW_FORM_flag: | |
8964 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
8965 | info_ptr += 1; | |
8966 | break; | |
2dc7f7b3 TT |
8967 | case DW_FORM_flag_present: |
8968 | DW_UNSND (attr) = 1; | |
8969 | break; | |
c906108c SS |
8970 | case DW_FORM_sdata: |
8971 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
8972 | info_ptr += bytes_read; | |
8973 | break; | |
8974 | case DW_FORM_udata: | |
8975 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8976 | info_ptr += bytes_read; | |
8977 | break; | |
8978 | case DW_FORM_ref1: | |
10b3939b | 8979 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
8980 | info_ptr += 1; |
8981 | break; | |
8982 | case DW_FORM_ref2: | |
10b3939b | 8983 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
8984 | info_ptr += 2; |
8985 | break; | |
8986 | case DW_FORM_ref4: | |
10b3939b | 8987 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
8988 | info_ptr += 4; |
8989 | break; | |
613e1657 | 8990 | case DW_FORM_ref8: |
10b3939b | 8991 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
8992 | info_ptr += 8; |
8993 | break; | |
348e048f DE |
8994 | case DW_FORM_sig8: |
8995 | /* Convert the signature to something we can record in DW_UNSND | |
8996 | for later lookup. | |
8997 | NOTE: This is NULL if the type wasn't found. */ | |
8998 | DW_SIGNATURED_TYPE (attr) = | |
8999 | lookup_signatured_type (cu->objfile, read_8_bytes (abfd, info_ptr)); | |
9000 | info_ptr += 8; | |
9001 | break; | |
c906108c | 9002 | case DW_FORM_ref_udata: |
10b3939b DJ |
9003 | DW_ADDR (attr) = (cu->header.offset |
9004 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
9005 | info_ptr += bytes_read; |
9006 | break; | |
c906108c | 9007 | case DW_FORM_indirect: |
a8329558 KW |
9008 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
9009 | info_ptr += bytes_read; | |
e7c27a73 | 9010 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 9011 | break; |
c906108c | 9012 | default: |
8a3fe4f8 | 9013 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
9014 | dwarf_form_name (form), |
9015 | bfd_get_filename (abfd)); | |
c906108c | 9016 | } |
28e94949 JB |
9017 | |
9018 | /* We have seen instances where the compiler tried to emit a byte | |
9019 | size attribute of -1 which ended up being encoded as an unsigned | |
9020 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
9021 | an object of this size seems pretty unlikely so we can relatively | |
9022 | safely treat these cases as if the size attribute was invalid and | |
9023 | treat them as zero by default. */ | |
9024 | if (attr->name == DW_AT_byte_size | |
9025 | && form == DW_FORM_data4 | |
9026 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
9027 | { |
9028 | complaint | |
9029 | (&symfile_complaints, | |
43bbcdc2 PH |
9030 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
9031 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
9032 | DW_UNSND (attr) = 0; |
9033 | } | |
28e94949 | 9034 | |
c906108c SS |
9035 | return info_ptr; |
9036 | } | |
9037 | ||
a8329558 KW |
9038 | /* Read an attribute described by an abbreviated attribute. */ |
9039 | ||
fe1b8b76 | 9040 | static gdb_byte * |
a8329558 | 9041 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 9042 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
9043 | { |
9044 | attr->name = abbrev->name; | |
e7c27a73 | 9045 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
9046 | } |
9047 | ||
c906108c SS |
9048 | /* read dwarf information from a buffer */ |
9049 | ||
9050 | static unsigned int | |
fe1b8b76 | 9051 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9052 | { |
fe1b8b76 | 9053 | return bfd_get_8 (abfd, buf); |
c906108c SS |
9054 | } |
9055 | ||
9056 | static int | |
fe1b8b76 | 9057 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 9058 | { |
fe1b8b76 | 9059 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
9060 | } |
9061 | ||
9062 | static unsigned int | |
fe1b8b76 | 9063 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9064 | { |
fe1b8b76 | 9065 | return bfd_get_16 (abfd, buf); |
c906108c SS |
9066 | } |
9067 | ||
9068 | static int | |
fe1b8b76 | 9069 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9070 | { |
fe1b8b76 | 9071 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
9072 | } |
9073 | ||
9074 | static unsigned int | |
fe1b8b76 | 9075 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9076 | { |
fe1b8b76 | 9077 | return bfd_get_32 (abfd, buf); |
c906108c SS |
9078 | } |
9079 | ||
9080 | static int | |
fe1b8b76 | 9081 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9082 | { |
fe1b8b76 | 9083 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
9084 | } |
9085 | ||
93311388 | 9086 | static ULONGEST |
fe1b8b76 | 9087 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 9088 | { |
fe1b8b76 | 9089 | return bfd_get_64 (abfd, buf); |
c906108c SS |
9090 | } |
9091 | ||
9092 | static CORE_ADDR | |
fe1b8b76 | 9093 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 9094 | unsigned int *bytes_read) |
c906108c | 9095 | { |
e7c27a73 | 9096 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
9097 | CORE_ADDR retval = 0; |
9098 | ||
107d2387 | 9099 | if (cu_header->signed_addr_p) |
c906108c | 9100 | { |
107d2387 AC |
9101 | switch (cu_header->addr_size) |
9102 | { | |
9103 | case 2: | |
fe1b8b76 | 9104 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
9105 | break; |
9106 | case 4: | |
fe1b8b76 | 9107 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
9108 | break; |
9109 | case 8: | |
fe1b8b76 | 9110 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
9111 | break; |
9112 | default: | |
8e65ff28 | 9113 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9114 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 9115 | bfd_get_filename (abfd)); |
107d2387 AC |
9116 | } |
9117 | } | |
9118 | else | |
9119 | { | |
9120 | switch (cu_header->addr_size) | |
9121 | { | |
9122 | case 2: | |
fe1b8b76 | 9123 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
9124 | break; |
9125 | case 4: | |
fe1b8b76 | 9126 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
9127 | break; |
9128 | case 8: | |
fe1b8b76 | 9129 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
9130 | break; |
9131 | default: | |
8e65ff28 | 9132 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 9133 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 9134 | bfd_get_filename (abfd)); |
107d2387 | 9135 | } |
c906108c | 9136 | } |
64367e0a | 9137 | |
107d2387 AC |
9138 | *bytes_read = cu_header->addr_size; |
9139 | return retval; | |
c906108c SS |
9140 | } |
9141 | ||
f7ef9339 | 9142 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
9143 | specification allows the initial length to take up either 4 bytes |
9144 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
9145 | bytes describe the length and all offsets will be 8 bytes in length | |
9146 | instead of 4. | |
9147 | ||
f7ef9339 KB |
9148 | An older, non-standard 64-bit format is also handled by this |
9149 | function. The older format in question stores the initial length | |
9150 | as an 8-byte quantity without an escape value. Lengths greater | |
9151 | than 2^32 aren't very common which means that the initial 4 bytes | |
9152 | is almost always zero. Since a length value of zero doesn't make | |
9153 | sense for the 32-bit format, this initial zero can be considered to | |
9154 | be an escape value which indicates the presence of the older 64-bit | |
9155 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
9156 | greater than 4GB. If it becomes necessary to handle lengths |
9157 | somewhat larger than 4GB, we could allow other small values (such | |
9158 | as the non-sensical values of 1, 2, and 3) to also be used as | |
9159 | escape values indicating the presence of the old format. | |
f7ef9339 | 9160 | |
917c78fc MK |
9161 | The value returned via bytes_read should be used to increment the |
9162 | relevant pointer after calling read_initial_length(). | |
c764a876 | 9163 | |
613e1657 KB |
9164 | [ Note: read_initial_length() and read_offset() are based on the |
9165 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 9166 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
9167 | from: |
9168 | ||
f7ef9339 | 9169 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 9170 | |
613e1657 KB |
9171 | This document is only a draft and is subject to change. (So beware.) |
9172 | ||
f7ef9339 | 9173 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
9174 | determined empirically by examining 64-bit ELF files produced by |
9175 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
9176 | |
9177 | - Kevin, July 16, 2002 | |
613e1657 KB |
9178 | ] */ |
9179 | ||
9180 | static LONGEST | |
c764a876 | 9181 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 9182 | { |
fe1b8b76 | 9183 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 9184 | |
dd373385 | 9185 | if (length == 0xffffffff) |
613e1657 | 9186 | { |
fe1b8b76 | 9187 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 9188 | *bytes_read = 12; |
613e1657 | 9189 | } |
dd373385 | 9190 | else if (length == 0) |
f7ef9339 | 9191 | { |
dd373385 | 9192 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 9193 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 9194 | *bytes_read = 8; |
f7ef9339 | 9195 | } |
613e1657 KB |
9196 | else |
9197 | { | |
9198 | *bytes_read = 4; | |
613e1657 KB |
9199 | } |
9200 | ||
c764a876 DE |
9201 | return length; |
9202 | } | |
dd373385 | 9203 | |
c764a876 DE |
9204 | /* Cover function for read_initial_length. |
9205 | Returns the length of the object at BUF, and stores the size of the | |
9206 | initial length in *BYTES_READ and stores the size that offsets will be in | |
9207 | *OFFSET_SIZE. | |
9208 | If the initial length size is not equivalent to that specified in | |
9209 | CU_HEADER then issue a complaint. | |
9210 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 9211 | |
c764a876 DE |
9212 | static LONGEST |
9213 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
9214 | const struct comp_unit_head *cu_header, | |
9215 | unsigned int *bytes_read, | |
9216 | unsigned int *offset_size) | |
9217 | { | |
9218 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
9219 | ||
9220 | gdb_assert (cu_header->initial_length_size == 4 | |
9221 | || cu_header->initial_length_size == 8 | |
9222 | || cu_header->initial_length_size == 12); | |
9223 | ||
9224 | if (cu_header->initial_length_size != *bytes_read) | |
9225 | complaint (&symfile_complaints, | |
9226 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 9227 | |
c764a876 | 9228 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 9229 | return length; |
613e1657 KB |
9230 | } |
9231 | ||
9232 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 9233 | given by cu_header->offset_size. */ |
613e1657 KB |
9234 | |
9235 | static LONGEST | |
fe1b8b76 | 9236 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 9237 | unsigned int *bytes_read) |
c764a876 DE |
9238 | { |
9239 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 9240 | |
c764a876 DE |
9241 | *bytes_read = cu_header->offset_size; |
9242 | return offset; | |
9243 | } | |
9244 | ||
9245 | /* Read an offset from the data stream. */ | |
9246 | ||
9247 | static LONGEST | |
9248 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
9249 | { |
9250 | LONGEST retval = 0; | |
9251 | ||
c764a876 | 9252 | switch (offset_size) |
613e1657 KB |
9253 | { |
9254 | case 4: | |
fe1b8b76 | 9255 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
9256 | break; |
9257 | case 8: | |
fe1b8b76 | 9258 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
9259 | break; |
9260 | default: | |
8e65ff28 | 9261 | internal_error (__FILE__, __LINE__, |
c764a876 | 9262 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 9263 | bfd_get_filename (abfd)); |
613e1657 KB |
9264 | } |
9265 | ||
917c78fc | 9266 | return retval; |
613e1657 KB |
9267 | } |
9268 | ||
fe1b8b76 JB |
9269 | static gdb_byte * |
9270 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
9271 | { |
9272 | /* If the size of a host char is 8 bits, we can return a pointer | |
9273 | to the buffer, otherwise we have to copy the data to a buffer | |
9274 | allocated on the temporary obstack. */ | |
4bdf3d34 | 9275 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 9276 | return buf; |
c906108c SS |
9277 | } |
9278 | ||
9279 | static char * | |
9b1c24c8 | 9280 | read_direct_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
9281 | { |
9282 | /* If the size of a host char is 8 bits, we can return a pointer | |
9283 | to the string, otherwise we have to copy the string to a buffer | |
9284 | allocated on the temporary obstack. */ | |
4bdf3d34 | 9285 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
9286 | if (*buf == '\0') |
9287 | { | |
9288 | *bytes_read_ptr = 1; | |
9289 | return NULL; | |
9290 | } | |
fe1b8b76 JB |
9291 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
9292 | return (char *) buf; | |
4bdf3d34 JJ |
9293 | } |
9294 | ||
9295 | static char * | |
fe1b8b76 | 9296 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
9297 | const struct comp_unit_head *cu_header, |
9298 | unsigned int *bytes_read_ptr) | |
9299 | { | |
c764a876 | 9300 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); |
c906108c | 9301 | |
be391dca | 9302 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 9303 | if (dwarf2_per_objfile->str.buffer == NULL) |
c906108c | 9304 | { |
8a3fe4f8 | 9305 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 9306 | bfd_get_filename (abfd)); |
4bdf3d34 | 9307 | return NULL; |
c906108c | 9308 | } |
dce234bc | 9309 | if (str_offset >= dwarf2_per_objfile->str.size) |
c906108c | 9310 | { |
8a3fe4f8 | 9311 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 9312 | bfd_get_filename (abfd)); |
c906108c SS |
9313 | return NULL; |
9314 | } | |
4bdf3d34 | 9315 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 9316 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 9317 | return NULL; |
dce234bc | 9318 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
9319 | } |
9320 | ||
ce5d95e1 | 9321 | static unsigned long |
fe1b8b76 | 9322 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 9323 | { |
ce5d95e1 JB |
9324 | unsigned long result; |
9325 | unsigned int num_read; | |
c906108c SS |
9326 | int i, shift; |
9327 | unsigned char byte; | |
9328 | ||
9329 | result = 0; | |
9330 | shift = 0; | |
9331 | num_read = 0; | |
9332 | i = 0; | |
9333 | while (1) | |
9334 | { | |
fe1b8b76 | 9335 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
9336 | buf++; |
9337 | num_read++; | |
ce5d95e1 | 9338 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
9339 | if ((byte & 128) == 0) |
9340 | { | |
9341 | break; | |
9342 | } | |
9343 | shift += 7; | |
9344 | } | |
9345 | *bytes_read_ptr = num_read; | |
9346 | return result; | |
9347 | } | |
9348 | ||
ce5d95e1 | 9349 | static long |
fe1b8b76 | 9350 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 9351 | { |
ce5d95e1 | 9352 | long result; |
77e0b926 | 9353 | int i, shift, num_read; |
c906108c SS |
9354 | unsigned char byte; |
9355 | ||
9356 | result = 0; | |
9357 | shift = 0; | |
c906108c SS |
9358 | num_read = 0; |
9359 | i = 0; | |
9360 | while (1) | |
9361 | { | |
fe1b8b76 | 9362 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
9363 | buf++; |
9364 | num_read++; | |
ce5d95e1 | 9365 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
9366 | shift += 7; |
9367 | if ((byte & 128) == 0) | |
9368 | { | |
9369 | break; | |
9370 | } | |
9371 | } | |
77e0b926 DJ |
9372 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
9373 | result |= -(((long)1) << shift); | |
c906108c SS |
9374 | *bytes_read_ptr = num_read; |
9375 | return result; | |
9376 | } | |
9377 | ||
4bb7a0a7 DJ |
9378 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
9379 | ||
fe1b8b76 JB |
9380 | static gdb_byte * |
9381 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
9382 | { |
9383 | int byte; | |
9384 | ||
9385 | while (1) | |
9386 | { | |
fe1b8b76 | 9387 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
9388 | buf++; |
9389 | if ((byte & 128) == 0) | |
9390 | return buf; | |
9391 | } | |
9392 | } | |
9393 | ||
c906108c | 9394 | static void |
e142c38c | 9395 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
9396 | { |
9397 | switch (lang) | |
9398 | { | |
9399 | case DW_LANG_C89: | |
76bee0cc | 9400 | case DW_LANG_C99: |
c906108c | 9401 | case DW_LANG_C: |
e142c38c | 9402 | cu->language = language_c; |
c906108c SS |
9403 | break; |
9404 | case DW_LANG_C_plus_plus: | |
e142c38c | 9405 | cu->language = language_cplus; |
c906108c | 9406 | break; |
6aecb9c2 JB |
9407 | case DW_LANG_D: |
9408 | cu->language = language_d; | |
9409 | break; | |
c906108c SS |
9410 | case DW_LANG_Fortran77: |
9411 | case DW_LANG_Fortran90: | |
b21b22e0 | 9412 | case DW_LANG_Fortran95: |
e142c38c | 9413 | cu->language = language_fortran; |
c906108c SS |
9414 | break; |
9415 | case DW_LANG_Mips_Assembler: | |
e142c38c | 9416 | cu->language = language_asm; |
c906108c | 9417 | break; |
bebd888e | 9418 | case DW_LANG_Java: |
e142c38c | 9419 | cu->language = language_java; |
bebd888e | 9420 | break; |
c906108c | 9421 | case DW_LANG_Ada83: |
8aaf0b47 | 9422 | case DW_LANG_Ada95: |
bc5f45f8 JB |
9423 | cu->language = language_ada; |
9424 | break; | |
72019c9c GM |
9425 | case DW_LANG_Modula2: |
9426 | cu->language = language_m2; | |
9427 | break; | |
fe8e67fd PM |
9428 | case DW_LANG_Pascal83: |
9429 | cu->language = language_pascal; | |
9430 | break; | |
22566fbd DJ |
9431 | case DW_LANG_ObjC: |
9432 | cu->language = language_objc; | |
9433 | break; | |
c906108c SS |
9434 | case DW_LANG_Cobol74: |
9435 | case DW_LANG_Cobol85: | |
c906108c | 9436 | default: |
e142c38c | 9437 | cu->language = language_minimal; |
c906108c SS |
9438 | break; |
9439 | } | |
e142c38c | 9440 | cu->language_defn = language_def (cu->language); |
c906108c SS |
9441 | } |
9442 | ||
9443 | /* Return the named attribute or NULL if not there. */ | |
9444 | ||
9445 | static struct attribute * | |
e142c38c | 9446 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
9447 | { |
9448 | unsigned int i; | |
9449 | struct attribute *spec = NULL; | |
9450 | ||
9451 | for (i = 0; i < die->num_attrs; ++i) | |
9452 | { | |
9453 | if (die->attrs[i].name == name) | |
10b3939b | 9454 | return &die->attrs[i]; |
c906108c SS |
9455 | if (die->attrs[i].name == DW_AT_specification |
9456 | || die->attrs[i].name == DW_AT_abstract_origin) | |
9457 | spec = &die->attrs[i]; | |
9458 | } | |
c906108c | 9459 | |
10b3939b | 9460 | if (spec) |
f2f0e013 DJ |
9461 | { |
9462 | die = follow_die_ref (die, spec, &cu); | |
9463 | return dwarf2_attr (die, name, cu); | |
9464 | } | |
c5aa993b | 9465 | |
c906108c SS |
9466 | return NULL; |
9467 | } | |
9468 | ||
348e048f DE |
9469 | /* Return the named attribute or NULL if not there, |
9470 | but do not follow DW_AT_specification, etc. | |
9471 | This is for use in contexts where we're reading .debug_types dies. | |
9472 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
9473 | back up the chain, and we want to go down. */ | |
9474 | ||
9475 | static struct attribute * | |
9476 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
9477 | struct dwarf2_cu *cu) | |
9478 | { | |
9479 | unsigned int i; | |
9480 | ||
9481 | for (i = 0; i < die->num_attrs; ++i) | |
9482 | if (die->attrs[i].name == name) | |
9483 | return &die->attrs[i]; | |
9484 | ||
9485 | return NULL; | |
9486 | } | |
9487 | ||
05cf31d1 JB |
9488 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
9489 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 9490 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
9491 | |
9492 | static int | |
9493 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
9494 | { | |
9495 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
9496 | ||
9497 | return (attr && DW_UNSND (attr)); | |
9498 | } | |
9499 | ||
3ca72b44 | 9500 | static int |
e142c38c | 9501 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 9502 | { |
05cf31d1 JB |
9503 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
9504 | which value is non-zero. However, we have to be careful with | |
9505 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
9506 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
9507 | end up accidently finding a declaration attribute that belongs | |
9508 | to a different DIE referenced by the specification attribute, | |
9509 | even though the given DIE does not have a declaration attribute. */ | |
9510 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
9511 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
9512 | } |
9513 | ||
63d06c5c | 9514 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 9515 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
9516 | containing the return value on output. If there is no |
9517 | specification, but there is an abstract origin, that is | |
9518 | returned. */ | |
63d06c5c DC |
9519 | |
9520 | static struct die_info * | |
f2f0e013 | 9521 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 9522 | { |
f2f0e013 DJ |
9523 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
9524 | *spec_cu); | |
63d06c5c | 9525 | |
edb3359d DJ |
9526 | if (spec_attr == NULL) |
9527 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
9528 | ||
63d06c5c DC |
9529 | if (spec_attr == NULL) |
9530 | return NULL; | |
9531 | else | |
f2f0e013 | 9532 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 9533 | } |
c906108c | 9534 | |
debd256d JB |
9535 | /* Free the line_header structure *LH, and any arrays and strings it |
9536 | refers to. */ | |
9537 | static void | |
9538 | free_line_header (struct line_header *lh) | |
9539 | { | |
9540 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 9541 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
9542 | |
9543 | /* Remember that all the lh->file_names[i].name pointers are | |
9544 | pointers into debug_line_buffer, and don't need to be freed. */ | |
9545 | if (lh->file_names) | |
a8bc7b56 | 9546 | xfree (lh->file_names); |
debd256d JB |
9547 | |
9548 | /* Similarly for the include directory names. */ | |
9549 | if (lh->include_dirs) | |
a8bc7b56 | 9550 | xfree (lh->include_dirs); |
debd256d | 9551 | |
a8bc7b56 | 9552 | xfree (lh); |
debd256d JB |
9553 | } |
9554 | ||
9555 | ||
9556 | /* Add an entry to LH's include directory table. */ | |
9557 | static void | |
9558 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 9559 | { |
debd256d JB |
9560 | /* Grow the array if necessary. */ |
9561 | if (lh->include_dirs_size == 0) | |
c5aa993b | 9562 | { |
debd256d JB |
9563 | lh->include_dirs_size = 1; /* for testing */ |
9564 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
9565 | * sizeof (*lh->include_dirs)); | |
9566 | } | |
9567 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
9568 | { | |
9569 | lh->include_dirs_size *= 2; | |
9570 | lh->include_dirs = xrealloc (lh->include_dirs, | |
9571 | (lh->include_dirs_size | |
9572 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 9573 | } |
c906108c | 9574 | |
debd256d JB |
9575 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
9576 | } | |
6e70227d | 9577 | |
debd256d JB |
9578 | |
9579 | /* Add an entry to LH's file name table. */ | |
9580 | static void | |
9581 | add_file_name (struct line_header *lh, | |
9582 | char *name, | |
9583 | unsigned int dir_index, | |
9584 | unsigned int mod_time, | |
9585 | unsigned int length) | |
9586 | { | |
9587 | struct file_entry *fe; | |
9588 | ||
9589 | /* Grow the array if necessary. */ | |
9590 | if (lh->file_names_size == 0) | |
9591 | { | |
9592 | lh->file_names_size = 1; /* for testing */ | |
9593 | lh->file_names = xmalloc (lh->file_names_size | |
9594 | * sizeof (*lh->file_names)); | |
9595 | } | |
9596 | else if (lh->num_file_names >= lh->file_names_size) | |
9597 | { | |
9598 | lh->file_names_size *= 2; | |
9599 | lh->file_names = xrealloc (lh->file_names, | |
9600 | (lh->file_names_size | |
9601 | * sizeof (*lh->file_names))); | |
9602 | } | |
9603 | ||
9604 | fe = &lh->file_names[lh->num_file_names++]; | |
9605 | fe->name = name; | |
9606 | fe->dir_index = dir_index; | |
9607 | fe->mod_time = mod_time; | |
9608 | fe->length = length; | |
aaa75496 | 9609 | fe->included_p = 0; |
cb1df416 | 9610 | fe->symtab = NULL; |
debd256d | 9611 | } |
6e70227d | 9612 | |
debd256d JB |
9613 | |
9614 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
9615 | .debug_line, according to the endianness of ABFD. Return a pointer |
9616 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
9617 | |
9618 | NOTE: the strings in the include directory and file name tables of | |
9619 | the returned object point into debug_line_buffer, and must not be | |
9620 | freed. */ | |
9621 | static struct line_header * | |
9622 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 9623 | struct dwarf2_cu *cu) |
debd256d JB |
9624 | { |
9625 | struct cleanup *back_to; | |
9626 | struct line_header *lh; | |
fe1b8b76 | 9627 | gdb_byte *line_ptr; |
c764a876 | 9628 | unsigned int bytes_read, offset_size; |
debd256d JB |
9629 | int i; |
9630 | char *cur_dir, *cur_file; | |
9631 | ||
be391dca | 9632 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->line); |
dce234bc | 9633 | if (dwarf2_per_objfile->line.buffer == NULL) |
debd256d | 9634 | { |
e2e0b3e5 | 9635 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
9636 | return 0; |
9637 | } | |
9638 | ||
a738430d MK |
9639 | /* Make sure that at least there's room for the total_length field. |
9640 | That could be 12 bytes long, but we're just going to fudge that. */ | |
dce234bc | 9641 | if (offset + 4 >= dwarf2_per_objfile->line.size) |
debd256d | 9642 | { |
4d3c2250 | 9643 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
9644 | return 0; |
9645 | } | |
9646 | ||
9647 | lh = xmalloc (sizeof (*lh)); | |
9648 | memset (lh, 0, sizeof (*lh)); | |
9649 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
9650 | (void *) lh); | |
9651 | ||
dce234bc | 9652 | line_ptr = dwarf2_per_objfile->line.buffer + offset; |
debd256d | 9653 | |
a738430d | 9654 | /* Read in the header. */ |
6e70227d | 9655 | lh->total_length = |
c764a876 DE |
9656 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
9657 | &bytes_read, &offset_size); | |
debd256d | 9658 | line_ptr += bytes_read; |
dce234bc PP |
9659 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line.buffer |
9660 | + dwarf2_per_objfile->line.size)) | |
debd256d | 9661 | { |
4d3c2250 | 9662 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
9663 | return 0; |
9664 | } | |
9665 | lh->statement_program_end = line_ptr + lh->total_length; | |
9666 | lh->version = read_2_bytes (abfd, line_ptr); | |
9667 | line_ptr += 2; | |
c764a876 DE |
9668 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
9669 | line_ptr += offset_size; | |
debd256d JB |
9670 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
9671 | line_ptr += 1; | |
2dc7f7b3 TT |
9672 | if (lh->version >= 4) |
9673 | { | |
9674 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
9675 | line_ptr += 1; | |
9676 | } | |
9677 | else | |
9678 | lh->maximum_ops_per_instruction = 1; | |
9679 | ||
9680 | if (lh->maximum_ops_per_instruction == 0) | |
9681 | { | |
9682 | lh->maximum_ops_per_instruction = 1; | |
9683 | complaint (&symfile_complaints, | |
9684 | _("invalid maximum_ops_per_instruction in `.debug_line' section")); | |
9685 | } | |
9686 | ||
debd256d JB |
9687 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
9688 | line_ptr += 1; | |
9689 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
9690 | line_ptr += 1; | |
9691 | lh->line_range = read_1_byte (abfd, line_ptr); | |
9692 | line_ptr += 1; | |
9693 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
9694 | line_ptr += 1; | |
9695 | lh->standard_opcode_lengths | |
fe1b8b76 | 9696 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
9697 | |
9698 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
9699 | for (i = 1; i < lh->opcode_base; ++i) | |
9700 | { | |
9701 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
9702 | line_ptr += 1; | |
9703 | } | |
9704 | ||
a738430d | 9705 | /* Read directory table. */ |
9b1c24c8 | 9706 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
9707 | { |
9708 | line_ptr += bytes_read; | |
9709 | add_include_dir (lh, cur_dir); | |
9710 | } | |
9711 | line_ptr += bytes_read; | |
9712 | ||
a738430d | 9713 | /* Read file name table. */ |
9b1c24c8 | 9714 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) |
debd256d JB |
9715 | { |
9716 | unsigned int dir_index, mod_time, length; | |
9717 | ||
9718 | line_ptr += bytes_read; | |
9719 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9720 | line_ptr += bytes_read; | |
9721 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9722 | line_ptr += bytes_read; | |
9723 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9724 | line_ptr += bytes_read; | |
9725 | ||
9726 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
9727 | } | |
9728 | line_ptr += bytes_read; | |
6e70227d | 9729 | lh->statement_program_start = line_ptr; |
debd256d | 9730 | |
dce234bc PP |
9731 | if (line_ptr > (dwarf2_per_objfile->line.buffer |
9732 | + dwarf2_per_objfile->line.size)) | |
4d3c2250 | 9733 | complaint (&symfile_complaints, |
e2e0b3e5 | 9734 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
9735 | |
9736 | discard_cleanups (back_to); | |
9737 | return lh; | |
9738 | } | |
c906108c | 9739 | |
5fb290d7 DJ |
9740 | /* This function exists to work around a bug in certain compilers |
9741 | (particularly GCC 2.95), in which the first line number marker of a | |
9742 | function does not show up until after the prologue, right before | |
9743 | the second line number marker. This function shifts ADDRESS down | |
9744 | to the beginning of the function if necessary, and is called on | |
9745 | addresses passed to record_line. */ | |
9746 | ||
9747 | static CORE_ADDR | |
e142c38c | 9748 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
9749 | { |
9750 | struct function_range *fn; | |
9751 | ||
9752 | /* Find the function_range containing address. */ | |
e142c38c | 9753 | if (!cu->first_fn) |
5fb290d7 DJ |
9754 | return address; |
9755 | ||
e142c38c DJ |
9756 | if (!cu->cached_fn) |
9757 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 9758 | |
e142c38c | 9759 | fn = cu->cached_fn; |
5fb290d7 DJ |
9760 | while (fn) |
9761 | if (fn->lowpc <= address && fn->highpc > address) | |
9762 | goto found; | |
9763 | else | |
9764 | fn = fn->next; | |
9765 | ||
e142c38c DJ |
9766 | fn = cu->first_fn; |
9767 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
9768 | if (fn->lowpc <= address && fn->highpc > address) |
9769 | goto found; | |
9770 | else | |
9771 | fn = fn->next; | |
9772 | ||
9773 | return address; | |
9774 | ||
9775 | found: | |
9776 | if (fn->seen_line) | |
9777 | return address; | |
9778 | if (address != fn->lowpc) | |
4d3c2250 | 9779 | complaint (&symfile_complaints, |
e2e0b3e5 | 9780 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 9781 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
9782 | fn->seen_line = 1; |
9783 | return fn->lowpc; | |
9784 | } | |
9785 | ||
aaa75496 JB |
9786 | /* Decode the Line Number Program (LNP) for the given line_header |
9787 | structure and CU. The actual information extracted and the type | |
9788 | of structures created from the LNP depends on the value of PST. | |
9789 | ||
9790 | 1. If PST is NULL, then this procedure uses the data from the program | |
9791 | to create all necessary symbol tables, and their linetables. | |
9792 | The compilation directory of the file is passed in COMP_DIR, | |
9793 | and must not be NULL. | |
6e70227d | 9794 | |
aaa75496 JB |
9795 | 2. If PST is not NULL, this procedure reads the program to determine |
9796 | the list of files included by the unit represented by PST, and | |
9797 | builds all the associated partial symbol tables. In this case, | |
9798 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
9799 | is not used to compute the full name of the symtab, and therefore | |
9800 | omitting it when building the partial symtab does not introduce | |
9801 | the potential for inconsistency - a partial symtab and its associated | |
9802 | symbtab having a different fullname -). */ | |
debd256d | 9803 | |
c906108c | 9804 | static void |
debd256d | 9805 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 9806 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 9807 | { |
a8c50c1f | 9808 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 9809 | gdb_byte *line_end; |
a8c50c1f | 9810 | unsigned int bytes_read, extended_len; |
c906108c | 9811 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
9812 | CORE_ADDR baseaddr; |
9813 | struct objfile *objfile = cu->objfile; | |
fbf65064 | 9814 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 9815 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 9816 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
e142c38c DJ |
9817 | |
9818 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 9819 | |
debd256d JB |
9820 | line_ptr = lh->statement_program_start; |
9821 | line_end = lh->statement_program_end; | |
c906108c SS |
9822 | |
9823 | /* Read the statement sequences until there's nothing left. */ | |
9824 | while (line_ptr < line_end) | |
9825 | { | |
9826 | /* state machine registers */ | |
9827 | CORE_ADDR address = 0; | |
9828 | unsigned int file = 1; | |
9829 | unsigned int line = 1; | |
9830 | unsigned int column = 0; | |
debd256d | 9831 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
9832 | int basic_block = 0; |
9833 | int end_sequence = 0; | |
fbf65064 | 9834 | CORE_ADDR addr; |
2dc7f7b3 | 9835 | unsigned char op_index = 0; |
c906108c | 9836 | |
aaa75496 | 9837 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 9838 | { |
aaa75496 | 9839 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
9840 | /* lh->include_dirs and lh->file_names are 0-based, but the |
9841 | directory and file name numbers in the statement program | |
9842 | are 1-based. */ | |
9843 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 9844 | char *dir = NULL; |
a738430d | 9845 | |
debd256d JB |
9846 | if (fe->dir_index) |
9847 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
9848 | |
9849 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
9850 | } |
9851 | ||
a738430d | 9852 | /* Decode the table. */ |
c5aa993b | 9853 | while (!end_sequence) |
c906108c SS |
9854 | { |
9855 | op_code = read_1_byte (abfd, line_ptr); | |
9856 | line_ptr += 1; | |
59205f5a JB |
9857 | if (line_ptr > line_end) |
9858 | { | |
9859 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
9860 | break; | |
9861 | } | |
9aa1fe7e | 9862 | |
debd256d | 9863 | if (op_code >= lh->opcode_base) |
6e70227d | 9864 | { |
a738430d | 9865 | /* Special operand. */ |
debd256d | 9866 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
9867 | address += (((op_index + (adj_opcode / lh->line_range)) |
9868 | / lh->maximum_ops_per_instruction) | |
9869 | * lh->minimum_instruction_length); | |
9870 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
9871 | % lh->maximum_ops_per_instruction); | |
debd256d | 9872 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 9873 | if (lh->num_file_names < file || file == 0) |
25e43795 | 9874 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
9875 | /* For now we ignore lines not starting on an |
9876 | instruction boundary. */ | |
9877 | else if (op_index == 0) | |
25e43795 DJ |
9878 | { |
9879 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 9880 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
9881 | { |
9882 | if (last_subfile != current_subfile) | |
9883 | { | |
9884 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
9885 | if (last_subfile) | |
9886 | record_line (last_subfile, 0, addr); | |
9887 | last_subfile = current_subfile; | |
9888 | } | |
25e43795 | 9889 | /* Append row to matrix using current values. */ |
fbf65064 UW |
9890 | addr = check_cu_functions (address, cu); |
9891 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
9892 | record_line (current_subfile, line, addr); | |
366da635 | 9893 | } |
25e43795 | 9894 | } |
ca5f395d | 9895 | basic_block = 0; |
9aa1fe7e GK |
9896 | } |
9897 | else switch (op_code) | |
c906108c SS |
9898 | { |
9899 | case DW_LNS_extended_op: | |
a8c50c1f | 9900 | extended_len = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
473b7be6 | 9901 | line_ptr += bytes_read; |
a8c50c1f | 9902 | extended_end = line_ptr + extended_len; |
c906108c SS |
9903 | extended_op = read_1_byte (abfd, line_ptr); |
9904 | line_ptr += 1; | |
9905 | switch (extended_op) | |
9906 | { | |
9907 | case DW_LNE_end_sequence: | |
9908 | end_sequence = 1; | |
c906108c SS |
9909 | break; |
9910 | case DW_LNE_set_address: | |
e7c27a73 | 9911 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
2dc7f7b3 | 9912 | op_index = 0; |
107d2387 AC |
9913 | line_ptr += bytes_read; |
9914 | address += baseaddr; | |
c906108c SS |
9915 | break; |
9916 | case DW_LNE_define_file: | |
debd256d JB |
9917 | { |
9918 | char *cur_file; | |
9919 | unsigned int dir_index, mod_time, length; | |
6e70227d | 9920 | |
9b1c24c8 | 9921 | cur_file = read_direct_string (abfd, line_ptr, &bytes_read); |
debd256d JB |
9922 | line_ptr += bytes_read; |
9923 | dir_index = | |
9924 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9925 | line_ptr += bytes_read; | |
9926 | mod_time = | |
9927 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9928 | line_ptr += bytes_read; | |
9929 | length = | |
9930 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9931 | line_ptr += bytes_read; | |
9932 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
9933 | } | |
c906108c | 9934 | break; |
d0c6ba3d CC |
9935 | case DW_LNE_set_discriminator: |
9936 | /* The discriminator is not interesting to the debugger; | |
9937 | just ignore it. */ | |
9938 | line_ptr = extended_end; | |
9939 | break; | |
c906108c | 9940 | default: |
4d3c2250 | 9941 | complaint (&symfile_complaints, |
e2e0b3e5 | 9942 | _("mangled .debug_line section")); |
debd256d | 9943 | return; |
c906108c | 9944 | } |
a8c50c1f DJ |
9945 | /* Make sure that we parsed the extended op correctly. If e.g. |
9946 | we expected a different address size than the producer used, | |
9947 | we may have read the wrong number of bytes. */ | |
9948 | if (line_ptr != extended_end) | |
9949 | { | |
9950 | complaint (&symfile_complaints, | |
9951 | _("mangled .debug_line section")); | |
9952 | return; | |
9953 | } | |
c906108c SS |
9954 | break; |
9955 | case DW_LNS_copy: | |
59205f5a | 9956 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
9957 | dwarf2_debug_line_missing_file_complaint (); |
9958 | else | |
366da635 | 9959 | { |
25e43795 | 9960 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 9961 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
9962 | { |
9963 | if (last_subfile != current_subfile) | |
9964 | { | |
9965 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
9966 | if (last_subfile) | |
9967 | record_line (last_subfile, 0, addr); | |
9968 | last_subfile = current_subfile; | |
9969 | } | |
9970 | addr = check_cu_functions (address, cu); | |
9971 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
9972 | record_line (current_subfile, line, addr); | |
9973 | } | |
366da635 | 9974 | } |
c906108c SS |
9975 | basic_block = 0; |
9976 | break; | |
9977 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
9978 | { |
9979 | CORE_ADDR adjust | |
9980 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9981 | ||
9982 | address += (((op_index + adjust) | |
9983 | / lh->maximum_ops_per_instruction) | |
9984 | * lh->minimum_instruction_length); | |
9985 | op_index = ((op_index + adjust) | |
9986 | % lh->maximum_ops_per_instruction); | |
9987 | line_ptr += bytes_read; | |
9988 | } | |
c906108c SS |
9989 | break; |
9990 | case DW_LNS_advance_line: | |
9991 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
9992 | line_ptr += bytes_read; | |
9993 | break; | |
9994 | case DW_LNS_set_file: | |
debd256d | 9995 | { |
a738430d MK |
9996 | /* The arrays lh->include_dirs and lh->file_names are |
9997 | 0-based, but the directory and file name numbers in | |
9998 | the statement program are 1-based. */ | |
debd256d | 9999 | struct file_entry *fe; |
4f1520fb | 10000 | char *dir = NULL; |
a738430d | 10001 | |
debd256d JB |
10002 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
10003 | line_ptr += bytes_read; | |
59205f5a | 10004 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
10005 | dwarf2_debug_line_missing_file_complaint (); |
10006 | else | |
10007 | { | |
10008 | fe = &lh->file_names[file - 1]; | |
10009 | if (fe->dir_index) | |
10010 | dir = lh->include_dirs[fe->dir_index - 1]; | |
10011 | if (!decode_for_pst_p) | |
10012 | { | |
10013 | last_subfile = current_subfile; | |
10014 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
10015 | } | |
10016 | } | |
debd256d | 10017 | } |
c906108c SS |
10018 | break; |
10019 | case DW_LNS_set_column: | |
10020 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10021 | line_ptr += bytes_read; | |
10022 | break; | |
10023 | case DW_LNS_negate_stmt: | |
10024 | is_stmt = (!is_stmt); | |
10025 | break; | |
10026 | case DW_LNS_set_basic_block: | |
10027 | basic_block = 1; | |
10028 | break; | |
c2c6d25f JM |
10029 | /* Add to the address register of the state machine the |
10030 | address increment value corresponding to special opcode | |
a738430d MK |
10031 | 255. I.e., this value is scaled by the minimum |
10032 | instruction length since special opcode 255 would have | |
10033 | scaled the the increment. */ | |
c906108c | 10034 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
10035 | { |
10036 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
10037 | ||
10038 | address += (((op_index + adjust) | |
10039 | / lh->maximum_ops_per_instruction) | |
10040 | * lh->minimum_instruction_length); | |
10041 | op_index = ((op_index + adjust) | |
10042 | % lh->maximum_ops_per_instruction); | |
10043 | } | |
c906108c SS |
10044 | break; |
10045 | case DW_LNS_fixed_advance_pc: | |
10046 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 10047 | op_index = 0; |
c906108c SS |
10048 | line_ptr += 2; |
10049 | break; | |
9aa1fe7e | 10050 | default: |
a738430d MK |
10051 | { |
10052 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 10053 | int i; |
a738430d | 10054 | |
debd256d | 10055 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
10056 | { |
10057 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
10058 | line_ptr += bytes_read; | |
10059 | } | |
10060 | } | |
c906108c SS |
10061 | } |
10062 | } | |
59205f5a JB |
10063 | if (lh->num_file_names < file || file == 0) |
10064 | dwarf2_debug_line_missing_file_complaint (); | |
10065 | else | |
10066 | { | |
10067 | lh->file_names[file - 1].included_p = 1; | |
10068 | if (!decode_for_pst_p) | |
fbf65064 UW |
10069 | { |
10070 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
10071 | record_line (current_subfile, 0, addr); | |
10072 | } | |
59205f5a | 10073 | } |
c906108c | 10074 | } |
aaa75496 JB |
10075 | |
10076 | if (decode_for_pst_p) | |
10077 | { | |
10078 | int file_index; | |
10079 | ||
10080 | /* Now that we're done scanning the Line Header Program, we can | |
10081 | create the psymtab of each included file. */ | |
10082 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
10083 | if (lh->file_names[file_index].included_p == 1) | |
10084 | { | |
5b5464ad JB |
10085 | const struct file_entry fe = lh->file_names [file_index]; |
10086 | char *include_name = fe.name; | |
10087 | char *dir_name = NULL; | |
10088 | char *pst_filename = pst->filename; | |
10089 | ||
10090 | if (fe.dir_index) | |
10091 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
10092 | ||
10093 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
10094 | { | |
1754f103 MK |
10095 | include_name = concat (dir_name, SLASH_STRING, |
10096 | include_name, (char *)NULL); | |
5b5464ad JB |
10097 | make_cleanup (xfree, include_name); |
10098 | } | |
10099 | ||
10100 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
10101 | { | |
1754f103 MK |
10102 | pst_filename = concat (pst->dirname, SLASH_STRING, |
10103 | pst_filename, (char *)NULL); | |
5b5464ad JB |
10104 | make_cleanup (xfree, pst_filename); |
10105 | } | |
10106 | ||
10107 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
10108 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
10109 | } | |
10110 | } | |
cb1df416 DJ |
10111 | else |
10112 | { | |
10113 | /* Make sure a symtab is created for every file, even files | |
10114 | which contain only variables (i.e. no code with associated | |
10115 | line numbers). */ | |
10116 | ||
10117 | int i; | |
10118 | struct file_entry *fe; | |
10119 | ||
10120 | for (i = 0; i < lh->num_file_names; i++) | |
10121 | { | |
10122 | char *dir = NULL; | |
9a619af0 | 10123 | |
cb1df416 DJ |
10124 | fe = &lh->file_names[i]; |
10125 | if (fe->dir_index) | |
10126 | dir = lh->include_dirs[fe->dir_index - 1]; | |
10127 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
10128 | ||
10129 | /* Skip the main file; we don't need it, and it must be | |
10130 | allocated last, so that it will show up before the | |
10131 | non-primary symtabs in the objfile's symtab list. */ | |
10132 | if (current_subfile == first_subfile) | |
10133 | continue; | |
10134 | ||
10135 | if (current_subfile->symtab == NULL) | |
10136 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
10137 | cu->objfile); | |
10138 | fe->symtab = current_subfile->symtab; | |
10139 | } | |
10140 | } | |
c906108c SS |
10141 | } |
10142 | ||
10143 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
10144 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
10145 | or NULL if not known. COMP_DIR is the compilation directory for the |
10146 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
10147 | This routine tries to keep line numbers from identical absolute and |
10148 | relative file names in a common subfile. | |
10149 | ||
10150 | Using the `list' example from the GDB testsuite, which resides in | |
10151 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
10152 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
10153 | ||
c5aa993b JM |
10154 | DW_AT_name: /srcdir/list0.c |
10155 | DW_AT_comp_dir: /compdir | |
357e46e7 | 10156 | files.files[0].name: list0.h |
c5aa993b | 10157 | files.files[0].dir: /srcdir |
357e46e7 | 10158 | files.files[1].name: list0.c |
c5aa993b | 10159 | files.files[1].dir: /srcdir |
c906108c SS |
10160 | |
10161 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
10162 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
10163 | start_subfile will ensure that this happens provided that we pass the | |
10164 | concatenation of files.files[1].dir and files.files[1].name as the | |
10165 | subfile's name. */ | |
c906108c SS |
10166 | |
10167 | static void | |
4f1520fb | 10168 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 10169 | { |
4f1520fb FR |
10170 | char *fullname; |
10171 | ||
10172 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
10173 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
10174 | second argument to start_subfile. To be consistent, we do the | |
10175 | same here. In order not to lose the line information directory, | |
10176 | we concatenate it to the filename when it makes sense. | |
10177 | Note that the Dwarf3 standard says (speaking of filenames in line | |
10178 | information): ``The directory index is ignored for file names | |
10179 | that represent full path names''. Thus ignoring dirname in the | |
10180 | `else' branch below isn't an issue. */ | |
c906108c | 10181 | |
d5166ae1 | 10182 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
10183 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
10184 | else | |
10185 | fullname = filename; | |
c906108c | 10186 | |
4f1520fb FR |
10187 | start_subfile (fullname, comp_dir); |
10188 | ||
10189 | if (fullname != filename) | |
10190 | xfree (fullname); | |
c906108c SS |
10191 | } |
10192 | ||
4c2df51b DJ |
10193 | static void |
10194 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 10195 | struct dwarf2_cu *cu) |
4c2df51b | 10196 | { |
e7c27a73 DJ |
10197 | struct objfile *objfile = cu->objfile; |
10198 | struct comp_unit_head *cu_header = &cu->header; | |
10199 | ||
4c2df51b DJ |
10200 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
10201 | code here to turn a symbol with DW_AT_external and a | |
10202 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
10203 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
10204 | with some versions of binutils) where shared libraries could have | |
10205 | relocations against symbols in their debug information - the | |
10206 | minimal symbol would have the right address, but the debug info | |
10207 | would not. It's no longer necessary, because we will explicitly | |
10208 | apply relocations when we read in the debug information now. */ | |
10209 | ||
10210 | /* A DW_AT_location attribute with no contents indicates that a | |
10211 | variable has been optimized away. */ | |
10212 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
10213 | { | |
10214 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
10215 | return; | |
10216 | } | |
10217 | ||
10218 | /* Handle one degenerate form of location expression specially, to | |
10219 | preserve GDB's previous behavior when section offsets are | |
10220 | specified. If this is just a DW_OP_addr then mark this symbol | |
10221 | as LOC_STATIC. */ | |
10222 | ||
10223 | if (attr_form_is_block (attr) | |
10224 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
10225 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
10226 | { | |
891d2f0b | 10227 | unsigned int dummy; |
4c2df51b DJ |
10228 | |
10229 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 10230 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 10231 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
10232 | fixup_symbol_section (sym, objfile); |
10233 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
10234 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
10235 | return; |
10236 | } | |
10237 | ||
10238 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
10239 | expression evaluator, and use LOC_COMPUTED only when necessary | |
10240 | (i.e. when the value of a register or memory location is | |
10241 | referenced, or a thread-local block, etc.). Then again, it might | |
10242 | not be worthwhile. I'm assuming that it isn't unless performance | |
10243 | or memory numbers show me otherwise. */ | |
10244 | ||
e7c27a73 | 10245 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
10246 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
10247 | } | |
10248 | ||
c906108c SS |
10249 | /* Given a pointer to a DWARF information entry, figure out if we need |
10250 | to make a symbol table entry for it, and if so, create a new entry | |
10251 | and return a pointer to it. | |
10252 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
10253 | used the passed type. |
10254 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
10255 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
10256 | |
10257 | static struct symbol * | |
34eaf542 TT |
10258 | new_symbol_full (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
10259 | struct symbol *space) | |
c906108c | 10260 | { |
e7c27a73 | 10261 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10262 | struct symbol *sym = NULL; |
10263 | char *name; | |
10264 | struct attribute *attr = NULL; | |
10265 | struct attribute *attr2 = NULL; | |
e142c38c | 10266 | CORE_ADDR baseaddr; |
e37fd15a SW |
10267 | struct pending **list_to_add = NULL; |
10268 | ||
edb3359d | 10269 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
10270 | |
10271 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 10272 | |
94af9270 | 10273 | name = dwarf2_name (die, cu); |
c906108c SS |
10274 | if (name) |
10275 | { | |
94af9270 | 10276 | const char *linkagename; |
34eaf542 | 10277 | int suppress_add = 0; |
94af9270 | 10278 | |
34eaf542 TT |
10279 | if (space) |
10280 | sym = space; | |
10281 | else | |
10282 | sym = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symbol); | |
c906108c | 10283 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
10284 | |
10285 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
33e5013e | 10286 | SYMBOL_SET_LANGUAGE (sym, cu->language); |
94af9270 KS |
10287 | linkagename = dwarf2_physname (name, die, cu); |
10288 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 10289 | |
f55ee35c JK |
10290 | /* Fortran does not have mangling standard and the mangling does differ |
10291 | between gfortran, iFort etc. */ | |
10292 | if (cu->language == language_fortran | |
b250c185 | 10293 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
10294 | symbol_set_demangled_name (&(sym->ginfo), |
10295 | (char *) dwarf2_full_name (name, die, cu), | |
10296 | NULL); | |
f55ee35c | 10297 | |
c906108c | 10298 | /* Default assumptions. |
c5aa993b | 10299 | Use the passed type or decode it from the die. */ |
176620f1 | 10300 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 10301 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
10302 | if (type != NULL) |
10303 | SYMBOL_TYPE (sym) = type; | |
10304 | else | |
e7c27a73 | 10305 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
10306 | attr = dwarf2_attr (die, |
10307 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
10308 | cu); | |
c906108c SS |
10309 | if (attr) |
10310 | { | |
10311 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
10312 | } | |
cb1df416 | 10313 | |
edb3359d DJ |
10314 | attr = dwarf2_attr (die, |
10315 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
10316 | cu); | |
cb1df416 DJ |
10317 | if (attr) |
10318 | { | |
10319 | int file_index = DW_UNSND (attr); | |
9a619af0 | 10320 | |
cb1df416 DJ |
10321 | if (cu->line_header == NULL |
10322 | || file_index > cu->line_header->num_file_names) | |
10323 | complaint (&symfile_complaints, | |
10324 | _("file index out of range")); | |
1c3d648d | 10325 | else if (file_index > 0) |
cb1df416 DJ |
10326 | { |
10327 | struct file_entry *fe; | |
9a619af0 | 10328 | |
cb1df416 DJ |
10329 | fe = &cu->line_header->file_names[file_index - 1]; |
10330 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
10331 | } | |
10332 | } | |
10333 | ||
c906108c SS |
10334 | switch (die->tag) |
10335 | { | |
10336 | case DW_TAG_label: | |
e142c38c | 10337 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
10338 | if (attr) |
10339 | { | |
10340 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
10341 | } | |
0f5238ed TT |
10342 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
10343 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 10344 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 10345 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
10346 | break; |
10347 | case DW_TAG_subprogram: | |
10348 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
10349 | finish_block. */ | |
10350 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 10351 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
10352 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
10353 | || cu->language == language_ada) | |
c906108c | 10354 | { |
2cfa0c8d JB |
10355 | /* Subprograms marked external are stored as a global symbol. |
10356 | Ada subprograms, whether marked external or not, are always | |
10357 | stored as a global symbol, because we want to be able to | |
10358 | access them globally. For instance, we want to be able | |
10359 | to break on a nested subprogram without having to | |
10360 | specify the context. */ | |
e37fd15a | 10361 | list_to_add = &global_symbols; |
c906108c SS |
10362 | } |
10363 | else | |
10364 | { | |
e37fd15a | 10365 | list_to_add = cu->list_in_scope; |
c906108c SS |
10366 | } |
10367 | break; | |
edb3359d DJ |
10368 | case DW_TAG_inlined_subroutine: |
10369 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
10370 | finish_block. */ | |
10371 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
10372 | SYMBOL_INLINED (sym) = 1; | |
10373 | /* Do not add the symbol to any lists. It will be found via | |
10374 | BLOCK_FUNCTION from the blockvector. */ | |
10375 | break; | |
34eaf542 TT |
10376 | case DW_TAG_template_value_param: |
10377 | suppress_add = 1; | |
10378 | /* Fall through. */ | |
c906108c | 10379 | case DW_TAG_variable: |
254e6b9e | 10380 | case DW_TAG_member: |
c906108c SS |
10381 | /* Compilation with minimal debug info may result in variables |
10382 | with missing type entries. Change the misleading `void' type | |
10383 | to something sensible. */ | |
10384 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
64c50499 | 10385 | SYMBOL_TYPE (sym) |
46bf5051 | 10386 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 10387 | |
e142c38c | 10388 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
10389 | /* In the case of DW_TAG_member, we should only be called for |
10390 | static const members. */ | |
10391 | if (die->tag == DW_TAG_member) | |
10392 | { | |
3863f96c DE |
10393 | /* dwarf2_add_field uses die_is_declaration, |
10394 | so we do the same. */ | |
254e6b9e DE |
10395 | gdb_assert (die_is_declaration (die, cu)); |
10396 | gdb_assert (attr); | |
10397 | } | |
c906108c SS |
10398 | if (attr) |
10399 | { | |
e7c27a73 | 10400 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 10401 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 10402 | if (!suppress_add) |
34eaf542 TT |
10403 | { |
10404 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
e37fd15a | 10405 | list_to_add = &global_symbols; |
34eaf542 | 10406 | else |
e37fd15a | 10407 | list_to_add = cu->list_in_scope; |
34eaf542 | 10408 | } |
c906108c SS |
10409 | break; |
10410 | } | |
e142c38c | 10411 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
10412 | if (attr) |
10413 | { | |
e7c27a73 | 10414 | var_decode_location (attr, sym, cu); |
e142c38c | 10415 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
caac4577 JG |
10416 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
10417 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
10418 | && !dwarf2_per_objfile->has_section_at_zero) | |
10419 | { | |
10420 | /* When a static variable is eliminated by the linker, | |
10421 | the corresponding debug information is not stripped | |
10422 | out, but the variable address is set to null; | |
10423 | do not add such variables into symbol table. */ | |
10424 | } | |
10425 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 10426 | { |
f55ee35c JK |
10427 | /* Workaround gfortran PR debug/40040 - it uses |
10428 | DW_AT_location for variables in -fPIC libraries which may | |
10429 | get overriden by other libraries/executable and get | |
10430 | a different address. Resolve it by the minimal symbol | |
10431 | which may come from inferior's executable using copy | |
10432 | relocation. Make this workaround only for gfortran as for | |
10433 | other compilers GDB cannot guess the minimal symbol | |
10434 | Fortran mangling kind. */ | |
10435 | if (cu->language == language_fortran && die->parent | |
10436 | && die->parent->tag == DW_TAG_module | |
10437 | && cu->producer | |
10438 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
10439 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
10440 | ||
1c809c68 TT |
10441 | /* A variable with DW_AT_external is never static, |
10442 | but it may be block-scoped. */ | |
10443 | list_to_add = (cu->list_in_scope == &file_symbols | |
10444 | ? &global_symbols : cu->list_in_scope); | |
1c809c68 | 10445 | } |
c906108c | 10446 | else |
e37fd15a | 10447 | list_to_add = cu->list_in_scope; |
c906108c SS |
10448 | } |
10449 | else | |
10450 | { | |
10451 | /* We do not know the address of this symbol. | |
c5aa993b JM |
10452 | If it is an external symbol and we have type information |
10453 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
10454 | The address of the variable will then be determined from | |
10455 | the minimal symbol table whenever the variable is | |
10456 | referenced. */ | |
e142c38c | 10457 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 10458 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 10459 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 10460 | { |
0fe7935b DJ |
10461 | /* A variable with DW_AT_external is never static, but it |
10462 | may be block-scoped. */ | |
10463 | list_to_add = (cu->list_in_scope == &file_symbols | |
10464 | ? &global_symbols : cu->list_in_scope); | |
10465 | ||
c906108c | 10466 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
c906108c | 10467 | } |
442ddf59 JK |
10468 | else if (!die_is_declaration (die, cu)) |
10469 | { | |
10470 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
10471 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
10472 | if (!suppress_add) |
10473 | list_to_add = cu->list_in_scope; | |
442ddf59 | 10474 | } |
c906108c SS |
10475 | } |
10476 | break; | |
10477 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
10478 | /* If we are inside a function, mark this as an argument. If |
10479 | not, we might be looking at an argument to an inlined function | |
10480 | when we do not have enough information to show inlined frames; | |
10481 | pretend it's a local variable in that case so that the user can | |
10482 | still see it. */ | |
10483 | if (context_stack_depth > 0 | |
10484 | && context_stack[context_stack_depth - 1].name != NULL) | |
10485 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 10486 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
10487 | if (attr) |
10488 | { | |
e7c27a73 | 10489 | var_decode_location (attr, sym, cu); |
c906108c | 10490 | } |
e142c38c | 10491 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
10492 | if (attr) |
10493 | { | |
e7c27a73 | 10494 | dwarf2_const_value (attr, sym, cu); |
c906108c | 10495 | } |
f346a30d PM |
10496 | attr = dwarf2_attr (die, DW_AT_variable_parameter, cu); |
10497 | if (attr && DW_UNSND (attr)) | |
10498 | { | |
10499 | struct type *ref_type; | |
10500 | ||
10501 | ref_type = lookup_reference_type (SYMBOL_TYPE (sym)); | |
10502 | SYMBOL_TYPE (sym) = ref_type; | |
10503 | } | |
10504 | ||
e37fd15a | 10505 | list_to_add = cu->list_in_scope; |
c906108c SS |
10506 | break; |
10507 | case DW_TAG_unspecified_parameters: | |
10508 | /* From varargs functions; gdb doesn't seem to have any | |
10509 | interest in this information, so just ignore it for now. | |
10510 | (FIXME?) */ | |
10511 | break; | |
34eaf542 TT |
10512 | case DW_TAG_template_type_param: |
10513 | suppress_add = 1; | |
10514 | /* Fall through. */ | |
c906108c | 10515 | case DW_TAG_class_type: |
680b30c7 | 10516 | case DW_TAG_interface_type: |
c906108c SS |
10517 | case DW_TAG_structure_type: |
10518 | case DW_TAG_union_type: | |
72019c9c | 10519 | case DW_TAG_set_type: |
c906108c SS |
10520 | case DW_TAG_enumeration_type: |
10521 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 10522 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 10523 | |
63d06c5c | 10524 | { |
987504bb | 10525 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
10526 | really ever be static objects: otherwise, if you try |
10527 | to, say, break of a class's method and you're in a file | |
10528 | which doesn't mention that class, it won't work unless | |
10529 | the check for all static symbols in lookup_symbol_aux | |
10530 | saves you. See the OtherFileClass tests in | |
10531 | gdb.c++/namespace.exp. */ | |
10532 | ||
e37fd15a | 10533 | if (!suppress_add) |
34eaf542 | 10534 | { |
34eaf542 TT |
10535 | list_to_add = (cu->list_in_scope == &file_symbols |
10536 | && (cu->language == language_cplus | |
10537 | || cu->language == language_java) | |
10538 | ? &global_symbols : cu->list_in_scope); | |
34eaf542 | 10539 | } |
63d06c5c DC |
10540 | |
10541 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb | 10542 | defines a typedef for "foo". A Java class declaration also |
5eeb2539 | 10543 | defines a typedef for the class. */ |
987504bb | 10544 | if (cu->language == language_cplus |
8c6860bb JB |
10545 | || cu->language == language_java |
10546 | || cu->language == language_ada) | |
63d06c5c | 10547 | { |
d8151005 DJ |
10548 | /* The symbol's name is already allocated along with |
10549 | this objfile, so we don't need to duplicate it for | |
10550 | the type. */ | |
63d06c5c | 10551 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 10552 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
10553 | } |
10554 | } | |
c906108c SS |
10555 | break; |
10556 | case DW_TAG_typedef: | |
63d06c5c DC |
10557 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
10558 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e37fd15a | 10559 | list_to_add = cu->list_in_scope; |
63d06c5c | 10560 | break; |
c906108c | 10561 | case DW_TAG_base_type: |
a02abb62 | 10562 | case DW_TAG_subrange_type: |
c906108c | 10563 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 10564 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 10565 | list_to_add = cu->list_in_scope; |
c906108c SS |
10566 | break; |
10567 | case DW_TAG_enumerator: | |
e142c38c | 10568 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
10569 | if (attr) |
10570 | { | |
e7c27a73 | 10571 | dwarf2_const_value (attr, sym, cu); |
c906108c | 10572 | } |
63d06c5c DC |
10573 | { |
10574 | /* NOTE: carlton/2003-11-10: See comment above in the | |
10575 | DW_TAG_class_type, etc. block. */ | |
10576 | ||
e142c38c | 10577 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
10578 | && (cu->language == language_cplus |
10579 | || cu->language == language_java) | |
e142c38c | 10580 | ? &global_symbols : cu->list_in_scope); |
63d06c5c | 10581 | } |
c906108c | 10582 | break; |
5c4e30ca DC |
10583 | case DW_TAG_namespace: |
10584 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
e37fd15a | 10585 | list_to_add = &global_symbols; |
5c4e30ca | 10586 | break; |
c906108c SS |
10587 | default: |
10588 | /* Not a tag we recognize. Hopefully we aren't processing | |
10589 | trash data, but since we must specifically ignore things | |
10590 | we don't recognize, there is nothing else we should do at | |
10591 | this point. */ | |
e2e0b3e5 | 10592 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 10593 | dwarf_tag_name (die->tag)); |
c906108c SS |
10594 | break; |
10595 | } | |
df8a16a1 | 10596 | |
e37fd15a SW |
10597 | if (suppress_add) |
10598 | { | |
10599 | sym->hash_next = objfile->template_symbols; | |
10600 | objfile->template_symbols = sym; | |
10601 | list_to_add = NULL; | |
10602 | } | |
10603 | ||
10604 | if (list_to_add != NULL) | |
10605 | add_symbol_to_list (sym, list_to_add); | |
10606 | ||
df8a16a1 DJ |
10607 | /* For the benefit of old versions of GCC, check for anonymous |
10608 | namespaces based on the demangled name. */ | |
10609 | if (!processing_has_namespace_info | |
94af9270 | 10610 | && cu->language == language_cplus) |
df8a16a1 | 10611 | cp_scan_for_anonymous_namespaces (sym); |
c906108c SS |
10612 | } |
10613 | return (sym); | |
10614 | } | |
10615 | ||
34eaf542 TT |
10616 | /* A wrapper for new_symbol_full that always allocates a new symbol. */ |
10617 | ||
10618 | static struct symbol * | |
10619 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
10620 | { | |
10621 | return new_symbol_full (die, type, cu, NULL); | |
10622 | } | |
10623 | ||
98bfdba5 PA |
10624 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
10625 | zero-extend it as appropriate for the symbol's type. The DWARF | |
10626 | standard (v4) is not entirely clear about the meaning of using | |
10627 | DW_FORM_dataN for a constant with a signed type, where the type is | |
10628 | wider than the data. The conclusion of a discussion on the DWARF | |
10629 | list was that this is unspecified. We choose to always zero-extend | |
10630 | because that is the interpretation long in use by GCC. */ | |
c906108c | 10631 | |
98bfdba5 PA |
10632 | static gdb_byte * |
10633 | dwarf2_const_value_data (struct attribute *attr, struct type *type, | |
10634 | const char *name, struct obstack *obstack, | |
10635 | struct dwarf2_cu *cu, long *value, int bits) | |
c906108c | 10636 | { |
e7c27a73 | 10637 | struct objfile *objfile = cu->objfile; |
e17a4113 UW |
10638 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
10639 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
10640 | LONGEST l = DW_UNSND (attr); |
10641 | ||
10642 | if (bits < sizeof (*value) * 8) | |
10643 | { | |
10644 | l &= ((LONGEST) 1 << bits) - 1; | |
10645 | *value = l; | |
10646 | } | |
10647 | else if (bits == sizeof (*value) * 8) | |
10648 | *value = l; | |
10649 | else | |
10650 | { | |
10651 | gdb_byte *bytes = obstack_alloc (obstack, bits / 8); | |
10652 | store_unsigned_integer (bytes, bits / 8, byte_order, l); | |
10653 | return bytes; | |
10654 | } | |
10655 | ||
10656 | return NULL; | |
10657 | } | |
10658 | ||
10659 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
10660 | the value does not fit in *VALUE, set *BYTES - either already | |
10661 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
10662 | or, set *BATON, if we translated the constant to a location | |
10663 | expression. */ | |
10664 | ||
10665 | static void | |
10666 | dwarf2_const_value_attr (struct attribute *attr, struct type *type, | |
10667 | const char *name, struct obstack *obstack, | |
10668 | struct dwarf2_cu *cu, | |
10669 | long *value, gdb_byte **bytes, | |
10670 | struct dwarf2_locexpr_baton **baton) | |
10671 | { | |
10672 | struct objfile *objfile = cu->objfile; | |
10673 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 10674 | struct dwarf_block *blk; |
98bfdba5 PA |
10675 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
10676 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
10677 | ||
10678 | *value = 0; | |
10679 | *bytes = NULL; | |
10680 | *baton = NULL; | |
c906108c SS |
10681 | |
10682 | switch (attr->form) | |
10683 | { | |
10684 | case DW_FORM_addr: | |
ac56253d | 10685 | { |
ac56253d TT |
10686 | gdb_byte *data; |
10687 | ||
98bfdba5 PA |
10688 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
10689 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 10690 | cu_header->addr_size, |
98bfdba5 | 10691 | TYPE_LENGTH (type)); |
ac56253d TT |
10692 | /* Symbols of this form are reasonably rare, so we just |
10693 | piggyback on the existing location code rather than writing | |
10694 | a new implementation of symbol_computed_ops. */ | |
98bfdba5 PA |
10695 | *baton = obstack_alloc (&objfile->objfile_obstack, |
10696 | sizeof (struct dwarf2_locexpr_baton)); | |
10697 | (*baton)->per_cu = cu->per_cu; | |
10698 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 10699 | |
98bfdba5 PA |
10700 | (*baton)->size = 2 + cu_header->addr_size; |
10701 | data = obstack_alloc (&objfile->objfile_obstack, (*baton)->size); | |
10702 | (*baton)->data = data; | |
ac56253d TT |
10703 | |
10704 | data[0] = DW_OP_addr; | |
10705 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
10706 | byte_order, DW_ADDR (attr)); | |
10707 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 10708 | } |
c906108c | 10709 | break; |
4ac36638 | 10710 | case DW_FORM_string: |
93b5768b | 10711 | case DW_FORM_strp: |
98bfdba5 PA |
10712 | /* DW_STRING is already allocated on the objfile obstack, point |
10713 | directly to it. */ | |
10714 | *bytes = (gdb_byte *) DW_STRING (attr); | |
93b5768b | 10715 | break; |
c906108c SS |
10716 | case DW_FORM_block1: |
10717 | case DW_FORM_block2: | |
10718 | case DW_FORM_block4: | |
10719 | case DW_FORM_block: | |
2dc7f7b3 | 10720 | case DW_FORM_exprloc: |
c906108c | 10721 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
10722 | if (TYPE_LENGTH (type) != blk->size) |
10723 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
10724 | TYPE_LENGTH (type)); | |
10725 | *bytes = blk->data; | |
c906108c | 10726 | break; |
2df3850c JM |
10727 | |
10728 | /* The DW_AT_const_value attributes are supposed to carry the | |
10729 | symbol's value "represented as it would be on the target | |
10730 | architecture." By the time we get here, it's already been | |
10731 | converted to host endianness, so we just need to sign- or | |
10732 | zero-extend it as appropriate. */ | |
10733 | case DW_FORM_data1: | |
98bfdba5 | 10734 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 8); |
2df3850c | 10735 | break; |
c906108c | 10736 | case DW_FORM_data2: |
98bfdba5 | 10737 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 16); |
2df3850c | 10738 | break; |
c906108c | 10739 | case DW_FORM_data4: |
98bfdba5 | 10740 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 32); |
2df3850c | 10741 | break; |
c906108c | 10742 | case DW_FORM_data8: |
98bfdba5 | 10743 | *bytes = dwarf2_const_value_data (attr, type, name, obstack, cu, value, 64); |
2df3850c JM |
10744 | break; |
10745 | ||
c906108c | 10746 | case DW_FORM_sdata: |
98bfdba5 | 10747 | *value = DW_SND (attr); |
2df3850c JM |
10748 | break; |
10749 | ||
c906108c | 10750 | case DW_FORM_udata: |
98bfdba5 | 10751 | *value = DW_UNSND (attr); |
c906108c | 10752 | break; |
2df3850c | 10753 | |
c906108c | 10754 | default: |
4d3c2250 | 10755 | complaint (&symfile_complaints, |
e2e0b3e5 | 10756 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 10757 | dwarf_form_name (attr->form)); |
98bfdba5 | 10758 | *value = 0; |
c906108c SS |
10759 | break; |
10760 | } | |
10761 | } | |
10762 | ||
2df3850c | 10763 | |
98bfdba5 PA |
10764 | /* Copy constant value from an attribute to a symbol. */ |
10765 | ||
2df3850c | 10766 | static void |
98bfdba5 PA |
10767 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
10768 | struct dwarf2_cu *cu) | |
2df3850c | 10769 | { |
98bfdba5 PA |
10770 | struct objfile *objfile = cu->objfile; |
10771 | struct comp_unit_head *cu_header = &cu->header; | |
10772 | long value; | |
10773 | gdb_byte *bytes; | |
10774 | struct dwarf2_locexpr_baton *baton; | |
2df3850c | 10775 | |
98bfdba5 PA |
10776 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
10777 | SYMBOL_PRINT_NAME (sym), | |
10778 | &objfile->objfile_obstack, cu, | |
10779 | &value, &bytes, &baton); | |
2df3850c | 10780 | |
98bfdba5 PA |
10781 | if (baton != NULL) |
10782 | { | |
10783 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
10784 | SYMBOL_LOCATION_BATON (sym) = baton; | |
10785 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
10786 | } | |
10787 | else if (bytes != NULL) | |
10788 | { | |
10789 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
10790 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
10791 | } | |
10792 | else | |
10793 | { | |
10794 | SYMBOL_VALUE (sym) = value; | |
10795 | SYMBOL_CLASS (sym) = LOC_CONST; | |
10796 | } | |
2df3850c JM |
10797 | } |
10798 | ||
10799 | ||
c906108c SS |
10800 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
10801 | ||
10802 | static struct type * | |
e7c27a73 | 10803 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10804 | { |
c906108c SS |
10805 | struct attribute *type_attr; |
10806 | struct die_info *type_die; | |
c906108c | 10807 | |
e142c38c | 10808 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
10809 | if (!type_attr) |
10810 | { | |
10811 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 10812 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 10813 | } |
348e048f DE |
10814 | |
10815 | type_die = follow_die_ref_or_sig (die, type_attr, &cu); | |
10b3939b | 10816 | |
33ac96f0 | 10817 | return tag_type_to_type (type_die, cu); |
c906108c SS |
10818 | } |
10819 | ||
b4ba55a1 JB |
10820 | /* True iff CU's producer generates GNAT Ada auxiliary information |
10821 | that allows to find parallel types through that information instead | |
10822 | of having to do expensive parallel lookups by type name. */ | |
10823 | ||
10824 | static int | |
10825 | need_gnat_info (struct dwarf2_cu *cu) | |
10826 | { | |
10827 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
10828 | of GNAT produces this auxiliary information, without any indication | |
10829 | that it is produced. Part of enhancing the FSF version of GNAT | |
10830 | to produce that information will be to put in place an indicator | |
10831 | that we can use in order to determine whether the descriptive type | |
10832 | info is available or not. One suggestion that has been made is | |
10833 | to use a new attribute, attached to the CU die. For now, assume | |
10834 | that the descriptive type info is not available. */ | |
10835 | return 0; | |
10836 | } | |
10837 | ||
10838 | ||
10839 | /* Return the auxiliary type of the die in question using its | |
10840 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
10841 | attribute is not present. */ | |
10842 | ||
10843 | static struct type * | |
10844 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
10845 | { | |
b4ba55a1 JB |
10846 | struct attribute *type_attr; |
10847 | struct die_info *type_die; | |
10848 | ||
10849 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
10850 | if (!type_attr) | |
10851 | return NULL; | |
10852 | ||
10853 | type_die = follow_die_ref (die, type_attr, &cu); | |
33ac96f0 | 10854 | return tag_type_to_type (type_die, cu); |
b4ba55a1 JB |
10855 | } |
10856 | ||
10857 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
10858 | descriptive type accordingly. */ | |
10859 | ||
10860 | static void | |
10861 | set_descriptive_type (struct type *type, struct die_info *die, | |
10862 | struct dwarf2_cu *cu) | |
10863 | { | |
10864 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
10865 | ||
10866 | if (descriptive_type) | |
10867 | { | |
10868 | ALLOCATE_GNAT_AUX_TYPE (type); | |
10869 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
10870 | } | |
10871 | } | |
10872 | ||
c906108c SS |
10873 | /* Return the containing type of the die in question using its |
10874 | DW_AT_containing_type attribute. */ | |
10875 | ||
10876 | static struct type * | |
e7c27a73 | 10877 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10878 | { |
c906108c | 10879 | struct attribute *type_attr; |
33ac96f0 | 10880 | struct die_info *type_die; |
c906108c | 10881 | |
e142c38c | 10882 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
10883 | if (!type_attr) |
10884 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
10885 | "[in module %s]"), cu->objfile->name); | |
10886 | ||
10887 | type_die = follow_die_ref_or_sig (die, type_attr, &cu); | |
10888 | return tag_type_to_type (type_die, cu); | |
c906108c SS |
10889 | } |
10890 | ||
c906108c | 10891 | static struct type * |
e7c27a73 | 10892 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10893 | { |
f792889a DJ |
10894 | struct type *this_type; |
10895 | ||
10896 | this_type = read_type_die (die, cu); | |
10897 | if (!this_type) | |
c906108c | 10898 | { |
b00fdb78 TT |
10899 | char *message, *saved; |
10900 | ||
10901 | /* read_type_die already issued a complaint. */ | |
10902 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
10903 | cu->objfile->name, | |
10904 | cu->header.offset, | |
10905 | die->offset); | |
10906 | saved = obstack_copy0 (&cu->objfile->objfile_obstack, | |
10907 | message, strlen (message)); | |
10908 | xfree (message); | |
10909 | ||
10910 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, cu->objfile); | |
c906108c | 10911 | } |
f792889a | 10912 | return this_type; |
c906108c SS |
10913 | } |
10914 | ||
f792889a | 10915 | static struct type * |
e7c27a73 | 10916 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10917 | { |
f792889a DJ |
10918 | struct type *this_type; |
10919 | ||
10920 | this_type = get_die_type (die, cu); | |
10921 | if (this_type) | |
10922 | return this_type; | |
10923 | ||
c906108c SS |
10924 | switch (die->tag) |
10925 | { | |
10926 | case DW_TAG_class_type: | |
680b30c7 | 10927 | case DW_TAG_interface_type: |
c906108c SS |
10928 | case DW_TAG_structure_type: |
10929 | case DW_TAG_union_type: | |
f792889a | 10930 | this_type = read_structure_type (die, cu); |
c906108c SS |
10931 | break; |
10932 | case DW_TAG_enumeration_type: | |
f792889a | 10933 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
10934 | break; |
10935 | case DW_TAG_subprogram: | |
10936 | case DW_TAG_subroutine_type: | |
edb3359d | 10937 | case DW_TAG_inlined_subroutine: |
f792889a | 10938 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
10939 | break; |
10940 | case DW_TAG_array_type: | |
f792889a | 10941 | this_type = read_array_type (die, cu); |
c906108c | 10942 | break; |
72019c9c | 10943 | case DW_TAG_set_type: |
f792889a | 10944 | this_type = read_set_type (die, cu); |
72019c9c | 10945 | break; |
c906108c | 10946 | case DW_TAG_pointer_type: |
f792889a | 10947 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
10948 | break; |
10949 | case DW_TAG_ptr_to_member_type: | |
f792889a | 10950 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
10951 | break; |
10952 | case DW_TAG_reference_type: | |
f792889a | 10953 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
10954 | break; |
10955 | case DW_TAG_const_type: | |
f792889a | 10956 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
10957 | break; |
10958 | case DW_TAG_volatile_type: | |
f792889a | 10959 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
10960 | break; |
10961 | case DW_TAG_string_type: | |
f792889a | 10962 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
10963 | break; |
10964 | case DW_TAG_typedef: | |
f792889a | 10965 | this_type = read_typedef (die, cu); |
c906108c | 10966 | break; |
a02abb62 | 10967 | case DW_TAG_subrange_type: |
f792889a | 10968 | this_type = read_subrange_type (die, cu); |
a02abb62 | 10969 | break; |
c906108c | 10970 | case DW_TAG_base_type: |
f792889a | 10971 | this_type = read_base_type (die, cu); |
c906108c | 10972 | break; |
81a17f79 | 10973 | case DW_TAG_unspecified_type: |
f792889a | 10974 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 10975 | break; |
0114d602 DJ |
10976 | case DW_TAG_namespace: |
10977 | this_type = read_namespace_type (die, cu); | |
10978 | break; | |
f55ee35c JK |
10979 | case DW_TAG_module: |
10980 | this_type = read_module_type (die, cu); | |
10981 | break; | |
c906108c | 10982 | default: |
a1f5b845 | 10983 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 10984 | dwarf_tag_name (die->tag)); |
c906108c SS |
10985 | break; |
10986 | } | |
63d06c5c | 10987 | |
f792889a | 10988 | return this_type; |
63d06c5c DC |
10989 | } |
10990 | ||
fdde2d81 | 10991 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 10992 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 10993 | |
0114d602 DJ |
10994 | For example, if we're within the method foo() in the following |
10995 | code: | |
10996 | ||
10997 | namespace N { | |
10998 | class C { | |
10999 | void foo () { | |
11000 | } | |
11001 | }; | |
11002 | } | |
11003 | ||
11004 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
11005 | |
11006 | static char * | |
e142c38c | 11007 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 11008 | { |
0114d602 DJ |
11009 | struct die_info *parent, *spec_die; |
11010 | struct dwarf2_cu *spec_cu; | |
11011 | struct type *parent_type; | |
63d06c5c | 11012 | |
f55ee35c JK |
11013 | if (cu->language != language_cplus && cu->language != language_java |
11014 | && cu->language != language_fortran) | |
0114d602 DJ |
11015 | return ""; |
11016 | ||
11017 | /* We have to be careful in the presence of DW_AT_specification. | |
11018 | For example, with GCC 3.4, given the code | |
11019 | ||
11020 | namespace N { | |
11021 | void foo() { | |
11022 | // Definition of N::foo. | |
11023 | } | |
11024 | } | |
11025 | ||
11026 | then we'll have a tree of DIEs like this: | |
11027 | ||
11028 | 1: DW_TAG_compile_unit | |
11029 | 2: DW_TAG_namespace // N | |
11030 | 3: DW_TAG_subprogram // declaration of N::foo | |
11031 | 4: DW_TAG_subprogram // definition of N::foo | |
11032 | DW_AT_specification // refers to die #3 | |
11033 | ||
11034 | Thus, when processing die #4, we have to pretend that we're in | |
11035 | the context of its DW_AT_specification, namely the contex of die | |
11036 | #3. */ | |
11037 | spec_cu = cu; | |
11038 | spec_die = die_specification (die, &spec_cu); | |
11039 | if (spec_die == NULL) | |
11040 | parent = die->parent; | |
11041 | else | |
63d06c5c | 11042 | { |
0114d602 DJ |
11043 | parent = spec_die->parent; |
11044 | cu = spec_cu; | |
63d06c5c | 11045 | } |
0114d602 DJ |
11046 | |
11047 | if (parent == NULL) | |
11048 | return ""; | |
98bfdba5 PA |
11049 | else if (parent->building_fullname) |
11050 | { | |
11051 | const char *name; | |
11052 | const char *parent_name; | |
11053 | ||
11054 | /* It has been seen on RealView 2.2 built binaries, | |
11055 | DW_TAG_template_type_param types actually _defined_ as | |
11056 | children of the parent class: | |
11057 | ||
11058 | enum E {}; | |
11059 | template class <class Enum> Class{}; | |
11060 | Class<enum E> class_e; | |
11061 | ||
11062 | 1: DW_TAG_class_type (Class) | |
11063 | 2: DW_TAG_enumeration_type (E) | |
11064 | 3: DW_TAG_enumerator (enum1:0) | |
11065 | 3: DW_TAG_enumerator (enum2:1) | |
11066 | ... | |
11067 | 2: DW_TAG_template_type_param | |
11068 | DW_AT_type DW_FORM_ref_udata (E) | |
11069 | ||
11070 | Besides being broken debug info, it can put GDB into an | |
11071 | infinite loop. Consider: | |
11072 | ||
11073 | When we're building the full name for Class<E>, we'll start | |
11074 | at Class, and go look over its template type parameters, | |
11075 | finding E. We'll then try to build the full name of E, and | |
11076 | reach here. We're now trying to build the full name of E, | |
11077 | and look over the parent DIE for containing scope. In the | |
11078 | broken case, if we followed the parent DIE of E, we'd again | |
11079 | find Class, and once again go look at its template type | |
11080 | arguments, etc., etc. Simply don't consider such parent die | |
11081 | as source-level parent of this die (it can't be, the language | |
11082 | doesn't allow it), and break the loop here. */ | |
11083 | name = dwarf2_name (die, cu); | |
11084 | parent_name = dwarf2_name (parent, cu); | |
11085 | complaint (&symfile_complaints, | |
11086 | _("template param type '%s' defined within parent '%s'"), | |
11087 | name ? name : "<unknown>", | |
11088 | parent_name ? parent_name : "<unknown>"); | |
11089 | return ""; | |
11090 | } | |
63d06c5c | 11091 | else |
0114d602 DJ |
11092 | switch (parent->tag) |
11093 | { | |
63d06c5c | 11094 | case DW_TAG_namespace: |
0114d602 | 11095 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
11096 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
11097 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
11098 | Work around this problem here. */ | |
11099 | if (cu->language == language_cplus | |
11100 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
11101 | return ""; | |
0114d602 DJ |
11102 | /* We give a name to even anonymous namespaces. */ |
11103 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 11104 | case DW_TAG_class_type: |
680b30c7 | 11105 | case DW_TAG_interface_type: |
63d06c5c | 11106 | case DW_TAG_structure_type: |
0114d602 | 11107 | case DW_TAG_union_type: |
f55ee35c | 11108 | case DW_TAG_module: |
0114d602 DJ |
11109 | parent_type = read_type_die (parent, cu); |
11110 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
11111 | return TYPE_TAG_NAME (parent_type); | |
11112 | else | |
11113 | /* An anonymous structure is only allowed non-static data | |
11114 | members; no typedefs, no member functions, et cetera. | |
11115 | So it does not need a prefix. */ | |
11116 | return ""; | |
63d06c5c | 11117 | default: |
8176b9b8 | 11118 | return determine_prefix (parent, cu); |
63d06c5c | 11119 | } |
63d06c5c DC |
11120 | } |
11121 | ||
987504bb JJ |
11122 | /* Return a newly-allocated string formed by concatenating PREFIX and |
11123 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
11124 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
11125 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
11126 | is used to determine the language and hence, the appropriate separator. */ | |
11127 | ||
f55ee35c | 11128 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
11129 | |
11130 | static char * | |
f55ee35c JK |
11131 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
11132 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 11133 | { |
f55ee35c | 11134 | const char *lead = ""; |
5c315b68 | 11135 | const char *sep; |
63d06c5c | 11136 | |
987504bb JJ |
11137 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
11138 | sep = ""; | |
11139 | else if (cu->language == language_java) | |
11140 | sep = "."; | |
f55ee35c JK |
11141 | else if (cu->language == language_fortran && physname) |
11142 | { | |
11143 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
11144 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
11145 | ||
11146 | lead = "__"; | |
11147 | sep = "_MOD_"; | |
11148 | } | |
987504bb JJ |
11149 | else |
11150 | sep = "::"; | |
63d06c5c | 11151 | |
6dd47d34 DE |
11152 | if (prefix == NULL) |
11153 | prefix = ""; | |
11154 | if (suffix == NULL) | |
11155 | suffix = ""; | |
11156 | ||
987504bb JJ |
11157 | if (obs == NULL) |
11158 | { | |
11159 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 11160 | |
f55ee35c JK |
11161 | strcpy (retval, lead); |
11162 | strcat (retval, prefix); | |
6dd47d34 DE |
11163 | strcat (retval, sep); |
11164 | strcat (retval, suffix); | |
63d06c5c DC |
11165 | return retval; |
11166 | } | |
987504bb JJ |
11167 | else |
11168 | { | |
11169 | /* We have an obstack. */ | |
f55ee35c | 11170 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 11171 | } |
63d06c5c DC |
11172 | } |
11173 | ||
c906108c SS |
11174 | /* Return sibling of die, NULL if no sibling. */ |
11175 | ||
f9aca02d | 11176 | static struct die_info * |
fba45db2 | 11177 | sibling_die (struct die_info *die) |
c906108c | 11178 | { |
639d11d3 | 11179 | return die->sibling; |
c906108c SS |
11180 | } |
11181 | ||
71c25dea TT |
11182 | /* Get name of a die, return NULL if not found. */ |
11183 | ||
11184 | static char * | |
11185 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
11186 | struct obstack *obstack) | |
11187 | { | |
11188 | if (name && cu->language == language_cplus) | |
11189 | { | |
11190 | char *canon_name = cp_canonicalize_string (name); | |
11191 | ||
11192 | if (canon_name != NULL) | |
11193 | { | |
11194 | if (strcmp (canon_name, name) != 0) | |
11195 | name = obsavestring (canon_name, strlen (canon_name), | |
11196 | obstack); | |
11197 | xfree (canon_name); | |
11198 | } | |
11199 | } | |
11200 | ||
11201 | return name; | |
c906108c SS |
11202 | } |
11203 | ||
9219021c DC |
11204 | /* Get name of a die, return NULL if not found. */ |
11205 | ||
11206 | static char * | |
e142c38c | 11207 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
11208 | { |
11209 | struct attribute *attr; | |
11210 | ||
e142c38c | 11211 | attr = dwarf2_attr (die, DW_AT_name, cu); |
71c25dea TT |
11212 | if (!attr || !DW_STRING (attr)) |
11213 | return NULL; | |
11214 | ||
11215 | switch (die->tag) | |
11216 | { | |
11217 | case DW_TAG_compile_unit: | |
11218 | /* Compilation units have a DW_AT_name that is a filename, not | |
11219 | a source language identifier. */ | |
11220 | case DW_TAG_enumeration_type: | |
11221 | case DW_TAG_enumerator: | |
11222 | /* These tags always have simple identifiers already; no need | |
11223 | to canonicalize them. */ | |
11224 | return DW_STRING (attr); | |
907af001 | 11225 | |
418835cc KS |
11226 | case DW_TAG_subprogram: |
11227 | /* Java constructors will all be named "<init>", so return | |
11228 | the class name when we see this special case. */ | |
11229 | if (cu->language == language_java | |
11230 | && DW_STRING (attr) != NULL | |
11231 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
11232 | { | |
11233 | struct dwarf2_cu *spec_cu = cu; | |
11234 | struct die_info *spec_die; | |
11235 | ||
11236 | /* GCJ will output '<init>' for Java constructor names. | |
11237 | For this special case, return the name of the parent class. */ | |
11238 | ||
11239 | /* GCJ may output suprogram DIEs with AT_specification set. | |
11240 | If so, use the name of the specified DIE. */ | |
11241 | spec_die = die_specification (die, &spec_cu); | |
11242 | if (spec_die != NULL) | |
11243 | return dwarf2_name (spec_die, spec_cu); | |
11244 | ||
11245 | do | |
11246 | { | |
11247 | die = die->parent; | |
11248 | if (die->tag == DW_TAG_class_type) | |
11249 | return dwarf2_name (die, cu); | |
11250 | } | |
11251 | while (die->tag != DW_TAG_compile_unit); | |
11252 | } | |
907af001 UW |
11253 | break; |
11254 | ||
11255 | case DW_TAG_class_type: | |
11256 | case DW_TAG_interface_type: | |
11257 | case DW_TAG_structure_type: | |
11258 | case DW_TAG_union_type: | |
11259 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
11260 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
11261 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
11262 | and GCC 4.4. We work around this problem by ignoring these. */ | |
11263 | if (strncmp (DW_STRING (attr), "._", 2) == 0 | |
11264 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0) | |
11265 | return NULL; | |
11266 | break; | |
11267 | ||
71c25dea | 11268 | default: |
907af001 UW |
11269 | break; |
11270 | } | |
11271 | ||
11272 | if (!DW_STRING_IS_CANONICAL (attr)) | |
11273 | { | |
11274 | DW_STRING (attr) | |
11275 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
11276 | &cu->objfile->objfile_obstack); | |
11277 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 11278 | } |
907af001 | 11279 | return DW_STRING (attr); |
9219021c DC |
11280 | } |
11281 | ||
11282 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
11283 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
11284 | containing the return value on output. */ | |
9219021c DC |
11285 | |
11286 | static struct die_info * | |
f2f0e013 | 11287 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
11288 | { |
11289 | struct attribute *attr; | |
9219021c | 11290 | |
f2f0e013 | 11291 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
11292 | if (attr == NULL) |
11293 | return NULL; | |
11294 | ||
f2f0e013 | 11295 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
11296 | } |
11297 | ||
c906108c SS |
11298 | /* Convert a DIE tag into its string name. */ |
11299 | ||
11300 | static char * | |
aa1ee363 | 11301 | dwarf_tag_name (unsigned tag) |
c906108c SS |
11302 | { |
11303 | switch (tag) | |
11304 | { | |
11305 | case DW_TAG_padding: | |
11306 | return "DW_TAG_padding"; | |
11307 | case DW_TAG_array_type: | |
11308 | return "DW_TAG_array_type"; | |
11309 | case DW_TAG_class_type: | |
11310 | return "DW_TAG_class_type"; | |
11311 | case DW_TAG_entry_point: | |
11312 | return "DW_TAG_entry_point"; | |
11313 | case DW_TAG_enumeration_type: | |
11314 | return "DW_TAG_enumeration_type"; | |
11315 | case DW_TAG_formal_parameter: | |
11316 | return "DW_TAG_formal_parameter"; | |
11317 | case DW_TAG_imported_declaration: | |
11318 | return "DW_TAG_imported_declaration"; | |
11319 | case DW_TAG_label: | |
11320 | return "DW_TAG_label"; | |
11321 | case DW_TAG_lexical_block: | |
11322 | return "DW_TAG_lexical_block"; | |
11323 | case DW_TAG_member: | |
11324 | return "DW_TAG_member"; | |
11325 | case DW_TAG_pointer_type: | |
11326 | return "DW_TAG_pointer_type"; | |
11327 | case DW_TAG_reference_type: | |
11328 | return "DW_TAG_reference_type"; | |
11329 | case DW_TAG_compile_unit: | |
11330 | return "DW_TAG_compile_unit"; | |
11331 | case DW_TAG_string_type: | |
11332 | return "DW_TAG_string_type"; | |
11333 | case DW_TAG_structure_type: | |
11334 | return "DW_TAG_structure_type"; | |
11335 | case DW_TAG_subroutine_type: | |
11336 | return "DW_TAG_subroutine_type"; | |
11337 | case DW_TAG_typedef: | |
11338 | return "DW_TAG_typedef"; | |
11339 | case DW_TAG_union_type: | |
11340 | return "DW_TAG_union_type"; | |
11341 | case DW_TAG_unspecified_parameters: | |
11342 | return "DW_TAG_unspecified_parameters"; | |
11343 | case DW_TAG_variant: | |
11344 | return "DW_TAG_variant"; | |
11345 | case DW_TAG_common_block: | |
11346 | return "DW_TAG_common_block"; | |
11347 | case DW_TAG_common_inclusion: | |
11348 | return "DW_TAG_common_inclusion"; | |
11349 | case DW_TAG_inheritance: | |
11350 | return "DW_TAG_inheritance"; | |
11351 | case DW_TAG_inlined_subroutine: | |
11352 | return "DW_TAG_inlined_subroutine"; | |
11353 | case DW_TAG_module: | |
11354 | return "DW_TAG_module"; | |
11355 | case DW_TAG_ptr_to_member_type: | |
11356 | return "DW_TAG_ptr_to_member_type"; | |
11357 | case DW_TAG_set_type: | |
11358 | return "DW_TAG_set_type"; | |
11359 | case DW_TAG_subrange_type: | |
11360 | return "DW_TAG_subrange_type"; | |
11361 | case DW_TAG_with_stmt: | |
11362 | return "DW_TAG_with_stmt"; | |
11363 | case DW_TAG_access_declaration: | |
11364 | return "DW_TAG_access_declaration"; | |
11365 | case DW_TAG_base_type: | |
11366 | return "DW_TAG_base_type"; | |
11367 | case DW_TAG_catch_block: | |
11368 | return "DW_TAG_catch_block"; | |
11369 | case DW_TAG_const_type: | |
11370 | return "DW_TAG_const_type"; | |
11371 | case DW_TAG_constant: | |
11372 | return "DW_TAG_constant"; | |
11373 | case DW_TAG_enumerator: | |
11374 | return "DW_TAG_enumerator"; | |
11375 | case DW_TAG_file_type: | |
11376 | return "DW_TAG_file_type"; | |
11377 | case DW_TAG_friend: | |
11378 | return "DW_TAG_friend"; | |
11379 | case DW_TAG_namelist: | |
11380 | return "DW_TAG_namelist"; | |
11381 | case DW_TAG_namelist_item: | |
11382 | return "DW_TAG_namelist_item"; | |
11383 | case DW_TAG_packed_type: | |
11384 | return "DW_TAG_packed_type"; | |
11385 | case DW_TAG_subprogram: | |
11386 | return "DW_TAG_subprogram"; | |
11387 | case DW_TAG_template_type_param: | |
11388 | return "DW_TAG_template_type_param"; | |
11389 | case DW_TAG_template_value_param: | |
11390 | return "DW_TAG_template_value_param"; | |
11391 | case DW_TAG_thrown_type: | |
11392 | return "DW_TAG_thrown_type"; | |
11393 | case DW_TAG_try_block: | |
11394 | return "DW_TAG_try_block"; | |
11395 | case DW_TAG_variant_part: | |
11396 | return "DW_TAG_variant_part"; | |
11397 | case DW_TAG_variable: | |
11398 | return "DW_TAG_variable"; | |
11399 | case DW_TAG_volatile_type: | |
11400 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
11401 | case DW_TAG_dwarf_procedure: |
11402 | return "DW_TAG_dwarf_procedure"; | |
11403 | case DW_TAG_restrict_type: | |
11404 | return "DW_TAG_restrict_type"; | |
11405 | case DW_TAG_interface_type: | |
11406 | return "DW_TAG_interface_type"; | |
11407 | case DW_TAG_namespace: | |
11408 | return "DW_TAG_namespace"; | |
11409 | case DW_TAG_imported_module: | |
11410 | return "DW_TAG_imported_module"; | |
11411 | case DW_TAG_unspecified_type: | |
11412 | return "DW_TAG_unspecified_type"; | |
11413 | case DW_TAG_partial_unit: | |
11414 | return "DW_TAG_partial_unit"; | |
11415 | case DW_TAG_imported_unit: | |
11416 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
11417 | case DW_TAG_condition: |
11418 | return "DW_TAG_condition"; | |
11419 | case DW_TAG_shared_type: | |
11420 | return "DW_TAG_shared_type"; | |
348e048f DE |
11421 | case DW_TAG_type_unit: |
11422 | return "DW_TAG_type_unit"; | |
c906108c SS |
11423 | case DW_TAG_MIPS_loop: |
11424 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
11425 | case DW_TAG_HP_array_descriptor: |
11426 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
11427 | case DW_TAG_format_label: |
11428 | return "DW_TAG_format_label"; | |
11429 | case DW_TAG_function_template: | |
11430 | return "DW_TAG_function_template"; | |
11431 | case DW_TAG_class_template: | |
11432 | return "DW_TAG_class_template"; | |
b7619582 GF |
11433 | case DW_TAG_GNU_BINCL: |
11434 | return "DW_TAG_GNU_BINCL"; | |
11435 | case DW_TAG_GNU_EINCL: | |
11436 | return "DW_TAG_GNU_EINCL"; | |
11437 | case DW_TAG_upc_shared_type: | |
11438 | return "DW_TAG_upc_shared_type"; | |
11439 | case DW_TAG_upc_strict_type: | |
11440 | return "DW_TAG_upc_strict_type"; | |
11441 | case DW_TAG_upc_relaxed_type: | |
11442 | return "DW_TAG_upc_relaxed_type"; | |
11443 | case DW_TAG_PGI_kanji_type: | |
11444 | return "DW_TAG_PGI_kanji_type"; | |
11445 | case DW_TAG_PGI_interface_block: | |
11446 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
11447 | default: |
11448 | return "DW_TAG_<unknown>"; | |
11449 | } | |
11450 | } | |
11451 | ||
11452 | /* Convert a DWARF attribute code into its string name. */ | |
11453 | ||
11454 | static char * | |
aa1ee363 | 11455 | dwarf_attr_name (unsigned attr) |
c906108c SS |
11456 | { |
11457 | switch (attr) | |
11458 | { | |
11459 | case DW_AT_sibling: | |
11460 | return "DW_AT_sibling"; | |
11461 | case DW_AT_location: | |
11462 | return "DW_AT_location"; | |
11463 | case DW_AT_name: | |
11464 | return "DW_AT_name"; | |
11465 | case DW_AT_ordering: | |
11466 | return "DW_AT_ordering"; | |
11467 | case DW_AT_subscr_data: | |
11468 | return "DW_AT_subscr_data"; | |
11469 | case DW_AT_byte_size: | |
11470 | return "DW_AT_byte_size"; | |
11471 | case DW_AT_bit_offset: | |
11472 | return "DW_AT_bit_offset"; | |
11473 | case DW_AT_bit_size: | |
11474 | return "DW_AT_bit_size"; | |
11475 | case DW_AT_element_list: | |
11476 | return "DW_AT_element_list"; | |
11477 | case DW_AT_stmt_list: | |
11478 | return "DW_AT_stmt_list"; | |
11479 | case DW_AT_low_pc: | |
11480 | return "DW_AT_low_pc"; | |
11481 | case DW_AT_high_pc: | |
11482 | return "DW_AT_high_pc"; | |
11483 | case DW_AT_language: | |
11484 | return "DW_AT_language"; | |
11485 | case DW_AT_member: | |
11486 | return "DW_AT_member"; | |
11487 | case DW_AT_discr: | |
11488 | return "DW_AT_discr"; | |
11489 | case DW_AT_discr_value: | |
11490 | return "DW_AT_discr_value"; | |
11491 | case DW_AT_visibility: | |
11492 | return "DW_AT_visibility"; | |
11493 | case DW_AT_import: | |
11494 | return "DW_AT_import"; | |
11495 | case DW_AT_string_length: | |
11496 | return "DW_AT_string_length"; | |
11497 | case DW_AT_common_reference: | |
11498 | return "DW_AT_common_reference"; | |
11499 | case DW_AT_comp_dir: | |
11500 | return "DW_AT_comp_dir"; | |
11501 | case DW_AT_const_value: | |
11502 | return "DW_AT_const_value"; | |
11503 | case DW_AT_containing_type: | |
11504 | return "DW_AT_containing_type"; | |
11505 | case DW_AT_default_value: | |
11506 | return "DW_AT_default_value"; | |
11507 | case DW_AT_inline: | |
11508 | return "DW_AT_inline"; | |
11509 | case DW_AT_is_optional: | |
11510 | return "DW_AT_is_optional"; | |
11511 | case DW_AT_lower_bound: | |
11512 | return "DW_AT_lower_bound"; | |
11513 | case DW_AT_producer: | |
11514 | return "DW_AT_producer"; | |
11515 | case DW_AT_prototyped: | |
11516 | return "DW_AT_prototyped"; | |
11517 | case DW_AT_return_addr: | |
11518 | return "DW_AT_return_addr"; | |
11519 | case DW_AT_start_scope: | |
11520 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
11521 | case DW_AT_bit_stride: |
11522 | return "DW_AT_bit_stride"; | |
c906108c SS |
11523 | case DW_AT_upper_bound: |
11524 | return "DW_AT_upper_bound"; | |
11525 | case DW_AT_abstract_origin: | |
11526 | return "DW_AT_abstract_origin"; | |
11527 | case DW_AT_accessibility: | |
11528 | return "DW_AT_accessibility"; | |
11529 | case DW_AT_address_class: | |
11530 | return "DW_AT_address_class"; | |
11531 | case DW_AT_artificial: | |
11532 | return "DW_AT_artificial"; | |
11533 | case DW_AT_base_types: | |
11534 | return "DW_AT_base_types"; | |
11535 | case DW_AT_calling_convention: | |
11536 | return "DW_AT_calling_convention"; | |
11537 | case DW_AT_count: | |
11538 | return "DW_AT_count"; | |
11539 | case DW_AT_data_member_location: | |
11540 | return "DW_AT_data_member_location"; | |
11541 | case DW_AT_decl_column: | |
11542 | return "DW_AT_decl_column"; | |
11543 | case DW_AT_decl_file: | |
11544 | return "DW_AT_decl_file"; | |
11545 | case DW_AT_decl_line: | |
11546 | return "DW_AT_decl_line"; | |
11547 | case DW_AT_declaration: | |
11548 | return "DW_AT_declaration"; | |
11549 | case DW_AT_discr_list: | |
11550 | return "DW_AT_discr_list"; | |
11551 | case DW_AT_encoding: | |
11552 | return "DW_AT_encoding"; | |
11553 | case DW_AT_external: | |
11554 | return "DW_AT_external"; | |
11555 | case DW_AT_frame_base: | |
11556 | return "DW_AT_frame_base"; | |
11557 | case DW_AT_friend: | |
11558 | return "DW_AT_friend"; | |
11559 | case DW_AT_identifier_case: | |
11560 | return "DW_AT_identifier_case"; | |
11561 | case DW_AT_macro_info: | |
11562 | return "DW_AT_macro_info"; | |
11563 | case DW_AT_namelist_items: | |
11564 | return "DW_AT_namelist_items"; | |
11565 | case DW_AT_priority: | |
11566 | return "DW_AT_priority"; | |
11567 | case DW_AT_segment: | |
11568 | return "DW_AT_segment"; | |
11569 | case DW_AT_specification: | |
11570 | return "DW_AT_specification"; | |
11571 | case DW_AT_static_link: | |
11572 | return "DW_AT_static_link"; | |
11573 | case DW_AT_type: | |
11574 | return "DW_AT_type"; | |
11575 | case DW_AT_use_location: | |
11576 | return "DW_AT_use_location"; | |
11577 | case DW_AT_variable_parameter: | |
11578 | return "DW_AT_variable_parameter"; | |
11579 | case DW_AT_virtuality: | |
11580 | return "DW_AT_virtuality"; | |
11581 | case DW_AT_vtable_elem_location: | |
11582 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 11583 | /* DWARF 3 values. */ |
d9fa45fe DC |
11584 | case DW_AT_allocated: |
11585 | return "DW_AT_allocated"; | |
11586 | case DW_AT_associated: | |
11587 | return "DW_AT_associated"; | |
11588 | case DW_AT_data_location: | |
11589 | return "DW_AT_data_location"; | |
09fa0d7c JK |
11590 | case DW_AT_byte_stride: |
11591 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
11592 | case DW_AT_entry_pc: |
11593 | return "DW_AT_entry_pc"; | |
11594 | case DW_AT_use_UTF8: | |
11595 | return "DW_AT_use_UTF8"; | |
11596 | case DW_AT_extension: | |
11597 | return "DW_AT_extension"; | |
11598 | case DW_AT_ranges: | |
11599 | return "DW_AT_ranges"; | |
11600 | case DW_AT_trampoline: | |
11601 | return "DW_AT_trampoline"; | |
11602 | case DW_AT_call_column: | |
11603 | return "DW_AT_call_column"; | |
11604 | case DW_AT_call_file: | |
11605 | return "DW_AT_call_file"; | |
11606 | case DW_AT_call_line: | |
11607 | return "DW_AT_call_line"; | |
b7619582 GF |
11608 | case DW_AT_description: |
11609 | return "DW_AT_description"; | |
11610 | case DW_AT_binary_scale: | |
11611 | return "DW_AT_binary_scale"; | |
11612 | case DW_AT_decimal_scale: | |
11613 | return "DW_AT_decimal_scale"; | |
11614 | case DW_AT_small: | |
11615 | return "DW_AT_small"; | |
11616 | case DW_AT_decimal_sign: | |
11617 | return "DW_AT_decimal_sign"; | |
11618 | case DW_AT_digit_count: | |
11619 | return "DW_AT_digit_count"; | |
11620 | case DW_AT_picture_string: | |
11621 | return "DW_AT_picture_string"; | |
11622 | case DW_AT_mutable: | |
11623 | return "DW_AT_mutable"; | |
11624 | case DW_AT_threads_scaled: | |
11625 | return "DW_AT_threads_scaled"; | |
11626 | case DW_AT_explicit: | |
11627 | return "DW_AT_explicit"; | |
11628 | case DW_AT_object_pointer: | |
11629 | return "DW_AT_object_pointer"; | |
11630 | case DW_AT_endianity: | |
11631 | return "DW_AT_endianity"; | |
11632 | case DW_AT_elemental: | |
11633 | return "DW_AT_elemental"; | |
11634 | case DW_AT_pure: | |
11635 | return "DW_AT_pure"; | |
11636 | case DW_AT_recursive: | |
11637 | return "DW_AT_recursive"; | |
348e048f DE |
11638 | /* DWARF 4 values. */ |
11639 | case DW_AT_signature: | |
11640 | return "DW_AT_signature"; | |
31ef98ae TT |
11641 | case DW_AT_linkage_name: |
11642 | return "DW_AT_linkage_name"; | |
b7619582 | 11643 | /* SGI/MIPS extensions. */ |
c764a876 | 11644 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
c906108c SS |
11645 | case DW_AT_MIPS_fde: |
11646 | return "DW_AT_MIPS_fde"; | |
c764a876 | 11647 | #endif |
c906108c SS |
11648 | case DW_AT_MIPS_loop_begin: |
11649 | return "DW_AT_MIPS_loop_begin"; | |
11650 | case DW_AT_MIPS_tail_loop_begin: | |
11651 | return "DW_AT_MIPS_tail_loop_begin"; | |
11652 | case DW_AT_MIPS_epilog_begin: | |
11653 | return "DW_AT_MIPS_epilog_begin"; | |
11654 | case DW_AT_MIPS_loop_unroll_factor: | |
11655 | return "DW_AT_MIPS_loop_unroll_factor"; | |
11656 | case DW_AT_MIPS_software_pipeline_depth: | |
11657 | return "DW_AT_MIPS_software_pipeline_depth"; | |
11658 | case DW_AT_MIPS_linkage_name: | |
11659 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
11660 | case DW_AT_MIPS_stride: |
11661 | return "DW_AT_MIPS_stride"; | |
11662 | case DW_AT_MIPS_abstract_name: | |
11663 | return "DW_AT_MIPS_abstract_name"; | |
11664 | case DW_AT_MIPS_clone_origin: | |
11665 | return "DW_AT_MIPS_clone_origin"; | |
11666 | case DW_AT_MIPS_has_inlines: | |
11667 | return "DW_AT_MIPS_has_inlines"; | |
b7619582 | 11668 | /* HP extensions. */ |
c764a876 | 11669 | #ifndef MIPS /* collides with DW_AT_MIPS_fde */ |
b7619582 GF |
11670 | case DW_AT_HP_block_index: |
11671 | return "DW_AT_HP_block_index"; | |
c764a876 | 11672 | #endif |
b7619582 GF |
11673 | case DW_AT_HP_unmodifiable: |
11674 | return "DW_AT_HP_unmodifiable"; | |
11675 | case DW_AT_HP_actuals_stmt_list: | |
11676 | return "DW_AT_HP_actuals_stmt_list"; | |
11677 | case DW_AT_HP_proc_per_section: | |
11678 | return "DW_AT_HP_proc_per_section"; | |
11679 | case DW_AT_HP_raw_data_ptr: | |
11680 | return "DW_AT_HP_raw_data_ptr"; | |
11681 | case DW_AT_HP_pass_by_reference: | |
11682 | return "DW_AT_HP_pass_by_reference"; | |
11683 | case DW_AT_HP_opt_level: | |
11684 | return "DW_AT_HP_opt_level"; | |
11685 | case DW_AT_HP_prof_version_id: | |
11686 | return "DW_AT_HP_prof_version_id"; | |
11687 | case DW_AT_HP_opt_flags: | |
11688 | return "DW_AT_HP_opt_flags"; | |
11689 | case DW_AT_HP_cold_region_low_pc: | |
11690 | return "DW_AT_HP_cold_region_low_pc"; | |
11691 | case DW_AT_HP_cold_region_high_pc: | |
11692 | return "DW_AT_HP_cold_region_high_pc"; | |
11693 | case DW_AT_HP_all_variables_modifiable: | |
11694 | return "DW_AT_HP_all_variables_modifiable"; | |
11695 | case DW_AT_HP_linkage_name: | |
11696 | return "DW_AT_HP_linkage_name"; | |
11697 | case DW_AT_HP_prof_flags: | |
11698 | return "DW_AT_HP_prof_flags"; | |
11699 | /* GNU extensions. */ | |
c906108c SS |
11700 | case DW_AT_sf_names: |
11701 | return "DW_AT_sf_names"; | |
11702 | case DW_AT_src_info: | |
11703 | return "DW_AT_src_info"; | |
11704 | case DW_AT_mac_info: | |
11705 | return "DW_AT_mac_info"; | |
11706 | case DW_AT_src_coords: | |
11707 | return "DW_AT_src_coords"; | |
11708 | case DW_AT_body_begin: | |
11709 | return "DW_AT_body_begin"; | |
11710 | case DW_AT_body_end: | |
11711 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
11712 | case DW_AT_GNU_vector: |
11713 | return "DW_AT_GNU_vector"; | |
2de00c64 DE |
11714 | case DW_AT_GNU_odr_signature: |
11715 | return "DW_AT_GNU_odr_signature"; | |
b7619582 GF |
11716 | /* VMS extensions. */ |
11717 | case DW_AT_VMS_rtnbeg_pd_address: | |
11718 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
11719 | /* UPC extension. */ | |
11720 | case DW_AT_upc_threads_scaled: | |
11721 | return "DW_AT_upc_threads_scaled"; | |
11722 | /* PGI (STMicroelectronics) extensions. */ | |
11723 | case DW_AT_PGI_lbase: | |
11724 | return "DW_AT_PGI_lbase"; | |
11725 | case DW_AT_PGI_soffset: | |
11726 | return "DW_AT_PGI_soffset"; | |
11727 | case DW_AT_PGI_lstride: | |
11728 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
11729 | default: |
11730 | return "DW_AT_<unknown>"; | |
11731 | } | |
11732 | } | |
11733 | ||
11734 | /* Convert a DWARF value form code into its string name. */ | |
11735 | ||
11736 | static char * | |
aa1ee363 | 11737 | dwarf_form_name (unsigned form) |
c906108c SS |
11738 | { |
11739 | switch (form) | |
11740 | { | |
11741 | case DW_FORM_addr: | |
11742 | return "DW_FORM_addr"; | |
11743 | case DW_FORM_block2: | |
11744 | return "DW_FORM_block2"; | |
11745 | case DW_FORM_block4: | |
11746 | return "DW_FORM_block4"; | |
11747 | case DW_FORM_data2: | |
11748 | return "DW_FORM_data2"; | |
11749 | case DW_FORM_data4: | |
11750 | return "DW_FORM_data4"; | |
11751 | case DW_FORM_data8: | |
11752 | return "DW_FORM_data8"; | |
11753 | case DW_FORM_string: | |
11754 | return "DW_FORM_string"; | |
11755 | case DW_FORM_block: | |
11756 | return "DW_FORM_block"; | |
11757 | case DW_FORM_block1: | |
11758 | return "DW_FORM_block1"; | |
11759 | case DW_FORM_data1: | |
11760 | return "DW_FORM_data1"; | |
11761 | case DW_FORM_flag: | |
11762 | return "DW_FORM_flag"; | |
11763 | case DW_FORM_sdata: | |
11764 | return "DW_FORM_sdata"; | |
11765 | case DW_FORM_strp: | |
11766 | return "DW_FORM_strp"; | |
11767 | case DW_FORM_udata: | |
11768 | return "DW_FORM_udata"; | |
11769 | case DW_FORM_ref_addr: | |
11770 | return "DW_FORM_ref_addr"; | |
11771 | case DW_FORM_ref1: | |
11772 | return "DW_FORM_ref1"; | |
11773 | case DW_FORM_ref2: | |
11774 | return "DW_FORM_ref2"; | |
11775 | case DW_FORM_ref4: | |
11776 | return "DW_FORM_ref4"; | |
11777 | case DW_FORM_ref8: | |
11778 | return "DW_FORM_ref8"; | |
11779 | case DW_FORM_ref_udata: | |
11780 | return "DW_FORM_ref_udata"; | |
11781 | case DW_FORM_indirect: | |
11782 | return "DW_FORM_indirect"; | |
348e048f DE |
11783 | case DW_FORM_sec_offset: |
11784 | return "DW_FORM_sec_offset"; | |
11785 | case DW_FORM_exprloc: | |
11786 | return "DW_FORM_exprloc"; | |
11787 | case DW_FORM_flag_present: | |
11788 | return "DW_FORM_flag_present"; | |
11789 | case DW_FORM_sig8: | |
11790 | return "DW_FORM_sig8"; | |
c906108c SS |
11791 | default: |
11792 | return "DW_FORM_<unknown>"; | |
11793 | } | |
11794 | } | |
11795 | ||
11796 | /* Convert a DWARF stack opcode into its string name. */ | |
11797 | ||
9eae7c52 TT |
11798 | const char * |
11799 | dwarf_stack_op_name (unsigned op, int def) | |
c906108c SS |
11800 | { |
11801 | switch (op) | |
11802 | { | |
11803 | case DW_OP_addr: | |
11804 | return "DW_OP_addr"; | |
11805 | case DW_OP_deref: | |
11806 | return "DW_OP_deref"; | |
11807 | case DW_OP_const1u: | |
11808 | return "DW_OP_const1u"; | |
11809 | case DW_OP_const1s: | |
11810 | return "DW_OP_const1s"; | |
11811 | case DW_OP_const2u: | |
11812 | return "DW_OP_const2u"; | |
11813 | case DW_OP_const2s: | |
11814 | return "DW_OP_const2s"; | |
11815 | case DW_OP_const4u: | |
11816 | return "DW_OP_const4u"; | |
11817 | case DW_OP_const4s: | |
11818 | return "DW_OP_const4s"; | |
11819 | case DW_OP_const8u: | |
11820 | return "DW_OP_const8u"; | |
11821 | case DW_OP_const8s: | |
11822 | return "DW_OP_const8s"; | |
11823 | case DW_OP_constu: | |
11824 | return "DW_OP_constu"; | |
11825 | case DW_OP_consts: | |
11826 | return "DW_OP_consts"; | |
11827 | case DW_OP_dup: | |
11828 | return "DW_OP_dup"; | |
11829 | case DW_OP_drop: | |
11830 | return "DW_OP_drop"; | |
11831 | case DW_OP_over: | |
11832 | return "DW_OP_over"; | |
11833 | case DW_OP_pick: | |
11834 | return "DW_OP_pick"; | |
11835 | case DW_OP_swap: | |
11836 | return "DW_OP_swap"; | |
11837 | case DW_OP_rot: | |
11838 | return "DW_OP_rot"; | |
11839 | case DW_OP_xderef: | |
11840 | return "DW_OP_xderef"; | |
11841 | case DW_OP_abs: | |
11842 | return "DW_OP_abs"; | |
11843 | case DW_OP_and: | |
11844 | return "DW_OP_and"; | |
11845 | case DW_OP_div: | |
11846 | return "DW_OP_div"; | |
11847 | case DW_OP_minus: | |
11848 | return "DW_OP_minus"; | |
11849 | case DW_OP_mod: | |
11850 | return "DW_OP_mod"; | |
11851 | case DW_OP_mul: | |
11852 | return "DW_OP_mul"; | |
11853 | case DW_OP_neg: | |
11854 | return "DW_OP_neg"; | |
11855 | case DW_OP_not: | |
11856 | return "DW_OP_not"; | |
11857 | case DW_OP_or: | |
11858 | return "DW_OP_or"; | |
11859 | case DW_OP_plus: | |
11860 | return "DW_OP_plus"; | |
11861 | case DW_OP_plus_uconst: | |
11862 | return "DW_OP_plus_uconst"; | |
11863 | case DW_OP_shl: | |
11864 | return "DW_OP_shl"; | |
11865 | case DW_OP_shr: | |
11866 | return "DW_OP_shr"; | |
11867 | case DW_OP_shra: | |
11868 | return "DW_OP_shra"; | |
11869 | case DW_OP_xor: | |
11870 | return "DW_OP_xor"; | |
11871 | case DW_OP_bra: | |
11872 | return "DW_OP_bra"; | |
11873 | case DW_OP_eq: | |
11874 | return "DW_OP_eq"; | |
11875 | case DW_OP_ge: | |
11876 | return "DW_OP_ge"; | |
11877 | case DW_OP_gt: | |
11878 | return "DW_OP_gt"; | |
11879 | case DW_OP_le: | |
11880 | return "DW_OP_le"; | |
11881 | case DW_OP_lt: | |
11882 | return "DW_OP_lt"; | |
11883 | case DW_OP_ne: | |
11884 | return "DW_OP_ne"; | |
11885 | case DW_OP_skip: | |
11886 | return "DW_OP_skip"; | |
11887 | case DW_OP_lit0: | |
11888 | return "DW_OP_lit0"; | |
11889 | case DW_OP_lit1: | |
11890 | return "DW_OP_lit1"; | |
11891 | case DW_OP_lit2: | |
11892 | return "DW_OP_lit2"; | |
11893 | case DW_OP_lit3: | |
11894 | return "DW_OP_lit3"; | |
11895 | case DW_OP_lit4: | |
11896 | return "DW_OP_lit4"; | |
11897 | case DW_OP_lit5: | |
11898 | return "DW_OP_lit5"; | |
11899 | case DW_OP_lit6: | |
11900 | return "DW_OP_lit6"; | |
11901 | case DW_OP_lit7: | |
11902 | return "DW_OP_lit7"; | |
11903 | case DW_OP_lit8: | |
11904 | return "DW_OP_lit8"; | |
11905 | case DW_OP_lit9: | |
11906 | return "DW_OP_lit9"; | |
11907 | case DW_OP_lit10: | |
11908 | return "DW_OP_lit10"; | |
11909 | case DW_OP_lit11: | |
11910 | return "DW_OP_lit11"; | |
11911 | case DW_OP_lit12: | |
11912 | return "DW_OP_lit12"; | |
11913 | case DW_OP_lit13: | |
11914 | return "DW_OP_lit13"; | |
11915 | case DW_OP_lit14: | |
11916 | return "DW_OP_lit14"; | |
11917 | case DW_OP_lit15: | |
11918 | return "DW_OP_lit15"; | |
11919 | case DW_OP_lit16: | |
11920 | return "DW_OP_lit16"; | |
11921 | case DW_OP_lit17: | |
11922 | return "DW_OP_lit17"; | |
11923 | case DW_OP_lit18: | |
11924 | return "DW_OP_lit18"; | |
11925 | case DW_OP_lit19: | |
11926 | return "DW_OP_lit19"; | |
11927 | case DW_OP_lit20: | |
11928 | return "DW_OP_lit20"; | |
11929 | case DW_OP_lit21: | |
11930 | return "DW_OP_lit21"; | |
11931 | case DW_OP_lit22: | |
11932 | return "DW_OP_lit22"; | |
11933 | case DW_OP_lit23: | |
11934 | return "DW_OP_lit23"; | |
11935 | case DW_OP_lit24: | |
11936 | return "DW_OP_lit24"; | |
11937 | case DW_OP_lit25: | |
11938 | return "DW_OP_lit25"; | |
11939 | case DW_OP_lit26: | |
11940 | return "DW_OP_lit26"; | |
11941 | case DW_OP_lit27: | |
11942 | return "DW_OP_lit27"; | |
11943 | case DW_OP_lit28: | |
11944 | return "DW_OP_lit28"; | |
11945 | case DW_OP_lit29: | |
11946 | return "DW_OP_lit29"; | |
11947 | case DW_OP_lit30: | |
11948 | return "DW_OP_lit30"; | |
11949 | case DW_OP_lit31: | |
11950 | return "DW_OP_lit31"; | |
11951 | case DW_OP_reg0: | |
11952 | return "DW_OP_reg0"; | |
11953 | case DW_OP_reg1: | |
11954 | return "DW_OP_reg1"; | |
11955 | case DW_OP_reg2: | |
11956 | return "DW_OP_reg2"; | |
11957 | case DW_OP_reg3: | |
11958 | return "DW_OP_reg3"; | |
11959 | case DW_OP_reg4: | |
11960 | return "DW_OP_reg4"; | |
11961 | case DW_OP_reg5: | |
11962 | return "DW_OP_reg5"; | |
11963 | case DW_OP_reg6: | |
11964 | return "DW_OP_reg6"; | |
11965 | case DW_OP_reg7: | |
11966 | return "DW_OP_reg7"; | |
11967 | case DW_OP_reg8: | |
11968 | return "DW_OP_reg8"; | |
11969 | case DW_OP_reg9: | |
11970 | return "DW_OP_reg9"; | |
11971 | case DW_OP_reg10: | |
11972 | return "DW_OP_reg10"; | |
11973 | case DW_OP_reg11: | |
11974 | return "DW_OP_reg11"; | |
11975 | case DW_OP_reg12: | |
11976 | return "DW_OP_reg12"; | |
11977 | case DW_OP_reg13: | |
11978 | return "DW_OP_reg13"; | |
11979 | case DW_OP_reg14: | |
11980 | return "DW_OP_reg14"; | |
11981 | case DW_OP_reg15: | |
11982 | return "DW_OP_reg15"; | |
11983 | case DW_OP_reg16: | |
11984 | return "DW_OP_reg16"; | |
11985 | case DW_OP_reg17: | |
11986 | return "DW_OP_reg17"; | |
11987 | case DW_OP_reg18: | |
11988 | return "DW_OP_reg18"; | |
11989 | case DW_OP_reg19: | |
11990 | return "DW_OP_reg19"; | |
11991 | case DW_OP_reg20: | |
11992 | return "DW_OP_reg20"; | |
11993 | case DW_OP_reg21: | |
11994 | return "DW_OP_reg21"; | |
11995 | case DW_OP_reg22: | |
11996 | return "DW_OP_reg22"; | |
11997 | case DW_OP_reg23: | |
11998 | return "DW_OP_reg23"; | |
11999 | case DW_OP_reg24: | |
12000 | return "DW_OP_reg24"; | |
12001 | case DW_OP_reg25: | |
12002 | return "DW_OP_reg25"; | |
12003 | case DW_OP_reg26: | |
12004 | return "DW_OP_reg26"; | |
12005 | case DW_OP_reg27: | |
12006 | return "DW_OP_reg27"; | |
12007 | case DW_OP_reg28: | |
12008 | return "DW_OP_reg28"; | |
12009 | case DW_OP_reg29: | |
12010 | return "DW_OP_reg29"; | |
12011 | case DW_OP_reg30: | |
12012 | return "DW_OP_reg30"; | |
12013 | case DW_OP_reg31: | |
12014 | return "DW_OP_reg31"; | |
12015 | case DW_OP_breg0: | |
12016 | return "DW_OP_breg0"; | |
12017 | case DW_OP_breg1: | |
12018 | return "DW_OP_breg1"; | |
12019 | case DW_OP_breg2: | |
12020 | return "DW_OP_breg2"; | |
12021 | case DW_OP_breg3: | |
12022 | return "DW_OP_breg3"; | |
12023 | case DW_OP_breg4: | |
12024 | return "DW_OP_breg4"; | |
12025 | case DW_OP_breg5: | |
12026 | return "DW_OP_breg5"; | |
12027 | case DW_OP_breg6: | |
12028 | return "DW_OP_breg6"; | |
12029 | case DW_OP_breg7: | |
12030 | return "DW_OP_breg7"; | |
12031 | case DW_OP_breg8: | |
12032 | return "DW_OP_breg8"; | |
12033 | case DW_OP_breg9: | |
12034 | return "DW_OP_breg9"; | |
12035 | case DW_OP_breg10: | |
12036 | return "DW_OP_breg10"; | |
12037 | case DW_OP_breg11: | |
12038 | return "DW_OP_breg11"; | |
12039 | case DW_OP_breg12: | |
12040 | return "DW_OP_breg12"; | |
12041 | case DW_OP_breg13: | |
12042 | return "DW_OP_breg13"; | |
12043 | case DW_OP_breg14: | |
12044 | return "DW_OP_breg14"; | |
12045 | case DW_OP_breg15: | |
12046 | return "DW_OP_breg15"; | |
12047 | case DW_OP_breg16: | |
12048 | return "DW_OP_breg16"; | |
12049 | case DW_OP_breg17: | |
12050 | return "DW_OP_breg17"; | |
12051 | case DW_OP_breg18: | |
12052 | return "DW_OP_breg18"; | |
12053 | case DW_OP_breg19: | |
12054 | return "DW_OP_breg19"; | |
12055 | case DW_OP_breg20: | |
12056 | return "DW_OP_breg20"; | |
12057 | case DW_OP_breg21: | |
12058 | return "DW_OP_breg21"; | |
12059 | case DW_OP_breg22: | |
12060 | return "DW_OP_breg22"; | |
12061 | case DW_OP_breg23: | |
12062 | return "DW_OP_breg23"; | |
12063 | case DW_OP_breg24: | |
12064 | return "DW_OP_breg24"; | |
12065 | case DW_OP_breg25: | |
12066 | return "DW_OP_breg25"; | |
12067 | case DW_OP_breg26: | |
12068 | return "DW_OP_breg26"; | |
12069 | case DW_OP_breg27: | |
12070 | return "DW_OP_breg27"; | |
12071 | case DW_OP_breg28: | |
12072 | return "DW_OP_breg28"; | |
12073 | case DW_OP_breg29: | |
12074 | return "DW_OP_breg29"; | |
12075 | case DW_OP_breg30: | |
12076 | return "DW_OP_breg30"; | |
12077 | case DW_OP_breg31: | |
12078 | return "DW_OP_breg31"; | |
12079 | case DW_OP_regx: | |
12080 | return "DW_OP_regx"; | |
12081 | case DW_OP_fbreg: | |
12082 | return "DW_OP_fbreg"; | |
12083 | case DW_OP_bregx: | |
12084 | return "DW_OP_bregx"; | |
12085 | case DW_OP_piece: | |
12086 | return "DW_OP_piece"; | |
12087 | case DW_OP_deref_size: | |
12088 | return "DW_OP_deref_size"; | |
12089 | case DW_OP_xderef_size: | |
12090 | return "DW_OP_xderef_size"; | |
12091 | case DW_OP_nop: | |
12092 | return "DW_OP_nop"; | |
b7619582 | 12093 | /* DWARF 3 extensions. */ |
ed348acc EZ |
12094 | case DW_OP_push_object_address: |
12095 | return "DW_OP_push_object_address"; | |
12096 | case DW_OP_call2: | |
12097 | return "DW_OP_call2"; | |
12098 | case DW_OP_call4: | |
12099 | return "DW_OP_call4"; | |
12100 | case DW_OP_call_ref: | |
12101 | return "DW_OP_call_ref"; | |
b7619582 GF |
12102 | case DW_OP_form_tls_address: |
12103 | return "DW_OP_form_tls_address"; | |
12104 | case DW_OP_call_frame_cfa: | |
12105 | return "DW_OP_call_frame_cfa"; | |
12106 | case DW_OP_bit_piece: | |
12107 | return "DW_OP_bit_piece"; | |
9eae7c52 TT |
12108 | /* DWARF 4 extensions. */ |
12109 | case DW_OP_implicit_value: | |
12110 | return "DW_OP_implicit_value"; | |
12111 | case DW_OP_stack_value: | |
12112 | return "DW_OP_stack_value"; | |
12113 | /* GNU extensions. */ | |
ed348acc EZ |
12114 | case DW_OP_GNU_push_tls_address: |
12115 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
12116 | case DW_OP_GNU_uninit: |
12117 | return "DW_OP_GNU_uninit"; | |
c906108c | 12118 | default: |
9eae7c52 | 12119 | return def ? "OP_<unknown>" : NULL; |
c906108c SS |
12120 | } |
12121 | } | |
12122 | ||
12123 | static char * | |
fba45db2 | 12124 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
12125 | { |
12126 | if (mybool) | |
12127 | return "TRUE"; | |
12128 | else | |
12129 | return "FALSE"; | |
12130 | } | |
12131 | ||
12132 | /* Convert a DWARF type code into its string name. */ | |
12133 | ||
12134 | static char * | |
aa1ee363 | 12135 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
12136 | { |
12137 | switch (enc) | |
12138 | { | |
b7619582 GF |
12139 | case DW_ATE_void: |
12140 | return "DW_ATE_void"; | |
c906108c SS |
12141 | case DW_ATE_address: |
12142 | return "DW_ATE_address"; | |
12143 | case DW_ATE_boolean: | |
12144 | return "DW_ATE_boolean"; | |
12145 | case DW_ATE_complex_float: | |
12146 | return "DW_ATE_complex_float"; | |
12147 | case DW_ATE_float: | |
12148 | return "DW_ATE_float"; | |
12149 | case DW_ATE_signed: | |
12150 | return "DW_ATE_signed"; | |
12151 | case DW_ATE_signed_char: | |
12152 | return "DW_ATE_signed_char"; | |
12153 | case DW_ATE_unsigned: | |
12154 | return "DW_ATE_unsigned"; | |
12155 | case DW_ATE_unsigned_char: | |
12156 | return "DW_ATE_unsigned_char"; | |
b7619582 | 12157 | /* DWARF 3. */ |
d9fa45fe DC |
12158 | case DW_ATE_imaginary_float: |
12159 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
12160 | case DW_ATE_packed_decimal: |
12161 | return "DW_ATE_packed_decimal"; | |
12162 | case DW_ATE_numeric_string: | |
12163 | return "DW_ATE_numeric_string"; | |
12164 | case DW_ATE_edited: | |
12165 | return "DW_ATE_edited"; | |
12166 | case DW_ATE_signed_fixed: | |
12167 | return "DW_ATE_signed_fixed"; | |
12168 | case DW_ATE_unsigned_fixed: | |
12169 | return "DW_ATE_unsigned_fixed"; | |
12170 | case DW_ATE_decimal_float: | |
12171 | return "DW_ATE_decimal_float"; | |
75079b2b TT |
12172 | /* DWARF 4. */ |
12173 | case DW_ATE_UTF: | |
12174 | return "DW_ATE_UTF"; | |
b7619582 GF |
12175 | /* HP extensions. */ |
12176 | case DW_ATE_HP_float80: | |
12177 | return "DW_ATE_HP_float80"; | |
12178 | case DW_ATE_HP_complex_float80: | |
12179 | return "DW_ATE_HP_complex_float80"; | |
12180 | case DW_ATE_HP_float128: | |
12181 | return "DW_ATE_HP_float128"; | |
12182 | case DW_ATE_HP_complex_float128: | |
12183 | return "DW_ATE_HP_complex_float128"; | |
12184 | case DW_ATE_HP_floathpintel: | |
12185 | return "DW_ATE_HP_floathpintel"; | |
12186 | case DW_ATE_HP_imaginary_float80: | |
12187 | return "DW_ATE_HP_imaginary_float80"; | |
12188 | case DW_ATE_HP_imaginary_float128: | |
12189 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
12190 | default: |
12191 | return "DW_ATE_<unknown>"; | |
12192 | } | |
12193 | } | |
12194 | ||
12195 | /* Convert a DWARF call frame info operation to its string name. */ | |
12196 | ||
12197 | #if 0 | |
12198 | static char * | |
aa1ee363 | 12199 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
12200 | { |
12201 | switch (cfi_opc) | |
12202 | { | |
12203 | case DW_CFA_advance_loc: | |
12204 | return "DW_CFA_advance_loc"; | |
12205 | case DW_CFA_offset: | |
12206 | return "DW_CFA_offset"; | |
12207 | case DW_CFA_restore: | |
12208 | return "DW_CFA_restore"; | |
12209 | case DW_CFA_nop: | |
12210 | return "DW_CFA_nop"; | |
12211 | case DW_CFA_set_loc: | |
12212 | return "DW_CFA_set_loc"; | |
12213 | case DW_CFA_advance_loc1: | |
12214 | return "DW_CFA_advance_loc1"; | |
12215 | case DW_CFA_advance_loc2: | |
12216 | return "DW_CFA_advance_loc2"; | |
12217 | case DW_CFA_advance_loc4: | |
12218 | return "DW_CFA_advance_loc4"; | |
12219 | case DW_CFA_offset_extended: | |
12220 | return "DW_CFA_offset_extended"; | |
12221 | case DW_CFA_restore_extended: | |
12222 | return "DW_CFA_restore_extended"; | |
12223 | case DW_CFA_undefined: | |
12224 | return "DW_CFA_undefined"; | |
12225 | case DW_CFA_same_value: | |
12226 | return "DW_CFA_same_value"; | |
12227 | case DW_CFA_register: | |
12228 | return "DW_CFA_register"; | |
12229 | case DW_CFA_remember_state: | |
12230 | return "DW_CFA_remember_state"; | |
12231 | case DW_CFA_restore_state: | |
12232 | return "DW_CFA_restore_state"; | |
12233 | case DW_CFA_def_cfa: | |
12234 | return "DW_CFA_def_cfa"; | |
12235 | case DW_CFA_def_cfa_register: | |
12236 | return "DW_CFA_def_cfa_register"; | |
12237 | case DW_CFA_def_cfa_offset: | |
12238 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 12239 | /* DWARF 3. */ |
985cb1a3 JM |
12240 | case DW_CFA_def_cfa_expression: |
12241 | return "DW_CFA_def_cfa_expression"; | |
12242 | case DW_CFA_expression: | |
12243 | return "DW_CFA_expression"; | |
12244 | case DW_CFA_offset_extended_sf: | |
12245 | return "DW_CFA_offset_extended_sf"; | |
12246 | case DW_CFA_def_cfa_sf: | |
12247 | return "DW_CFA_def_cfa_sf"; | |
12248 | case DW_CFA_def_cfa_offset_sf: | |
12249 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
12250 | case DW_CFA_val_offset: |
12251 | return "DW_CFA_val_offset"; | |
12252 | case DW_CFA_val_offset_sf: | |
12253 | return "DW_CFA_val_offset_sf"; | |
12254 | case DW_CFA_val_expression: | |
12255 | return "DW_CFA_val_expression"; | |
12256 | /* SGI/MIPS specific. */ | |
c906108c SS |
12257 | case DW_CFA_MIPS_advance_loc8: |
12258 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 12259 | /* GNU extensions. */ |
985cb1a3 JM |
12260 | case DW_CFA_GNU_window_save: |
12261 | return "DW_CFA_GNU_window_save"; | |
12262 | case DW_CFA_GNU_args_size: | |
12263 | return "DW_CFA_GNU_args_size"; | |
12264 | case DW_CFA_GNU_negative_offset_extended: | |
12265 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
12266 | default: |
12267 | return "DW_CFA_<unknown>"; | |
12268 | } | |
12269 | } | |
12270 | #endif | |
12271 | ||
f9aca02d | 12272 | static void |
d97bc12b | 12273 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
12274 | { |
12275 | unsigned int i; | |
12276 | ||
d97bc12b DE |
12277 | print_spaces (indent, f); |
12278 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 12279 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
12280 | |
12281 | if (die->parent != NULL) | |
12282 | { | |
12283 | print_spaces (indent, f); | |
12284 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
12285 | die->parent->offset); | |
12286 | } | |
12287 | ||
12288 | print_spaces (indent, f); | |
12289 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 12290 | dwarf_bool_name (die->child != NULL)); |
c906108c | 12291 | |
d97bc12b DE |
12292 | print_spaces (indent, f); |
12293 | fprintf_unfiltered (f, " attributes:\n"); | |
12294 | ||
c906108c SS |
12295 | for (i = 0; i < die->num_attrs; ++i) |
12296 | { | |
d97bc12b DE |
12297 | print_spaces (indent, f); |
12298 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
12299 | dwarf_attr_name (die->attrs[i].name), |
12300 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 12301 | |
c906108c SS |
12302 | switch (die->attrs[i].form) |
12303 | { | |
12304 | case DW_FORM_ref_addr: | |
12305 | case DW_FORM_addr: | |
d97bc12b | 12306 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 12307 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
12308 | break; |
12309 | case DW_FORM_block2: | |
12310 | case DW_FORM_block4: | |
12311 | case DW_FORM_block: | |
12312 | case DW_FORM_block1: | |
d97bc12b | 12313 | fprintf_unfiltered (f, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 12314 | break; |
2dc7f7b3 TT |
12315 | case DW_FORM_exprloc: |
12316 | fprintf_unfiltered (f, "expression: size %u", | |
12317 | DW_BLOCK (&die->attrs[i])->size); | |
12318 | break; | |
10b3939b DJ |
12319 | case DW_FORM_ref1: |
12320 | case DW_FORM_ref2: | |
12321 | case DW_FORM_ref4: | |
d97bc12b | 12322 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
12323 | (long) (DW_ADDR (&die->attrs[i]))); |
12324 | break; | |
c906108c SS |
12325 | case DW_FORM_data1: |
12326 | case DW_FORM_data2: | |
12327 | case DW_FORM_data4: | |
ce5d95e1 | 12328 | case DW_FORM_data8: |
c906108c SS |
12329 | case DW_FORM_udata: |
12330 | case DW_FORM_sdata: | |
43bbcdc2 PH |
12331 | fprintf_unfiltered (f, "constant: %s", |
12332 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 12333 | break; |
2dc7f7b3 TT |
12334 | case DW_FORM_sec_offset: |
12335 | fprintf_unfiltered (f, "section offset: %s", | |
12336 | pulongest (DW_UNSND (&die->attrs[i]))); | |
12337 | break; | |
348e048f DE |
12338 | case DW_FORM_sig8: |
12339 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) | |
12340 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
12341 | DW_SIGNATURED_TYPE (&die->attrs[i])->offset); | |
12342 | else | |
12343 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
12344 | break; | |
c906108c | 12345 | case DW_FORM_string: |
4bdf3d34 | 12346 | case DW_FORM_strp: |
8285870a | 12347 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 12348 | DW_STRING (&die->attrs[i]) |
8285870a JK |
12349 | ? DW_STRING (&die->attrs[i]) : "", |
12350 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
12351 | break; |
12352 | case DW_FORM_flag: | |
12353 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 12354 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 12355 | else |
d97bc12b | 12356 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 12357 | break; |
2dc7f7b3 TT |
12358 | case DW_FORM_flag_present: |
12359 | fprintf_unfiltered (f, "flag: TRUE"); | |
12360 | break; | |
a8329558 KW |
12361 | case DW_FORM_indirect: |
12362 | /* the reader will have reduced the indirect form to | |
12363 | the "base form" so this form should not occur */ | |
d97bc12b | 12364 | fprintf_unfiltered (f, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 12365 | break; |
c906108c | 12366 | default: |
d97bc12b | 12367 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 12368 | die->attrs[i].form); |
d97bc12b | 12369 | break; |
c906108c | 12370 | } |
d97bc12b | 12371 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
12372 | } |
12373 | } | |
12374 | ||
f9aca02d | 12375 | static void |
d97bc12b | 12376 | dump_die_for_error (struct die_info *die) |
c906108c | 12377 | { |
d97bc12b DE |
12378 | dump_die_shallow (gdb_stderr, 0, die); |
12379 | } | |
12380 | ||
12381 | static void | |
12382 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
12383 | { | |
12384 | int indent = level * 4; | |
12385 | ||
12386 | gdb_assert (die != NULL); | |
12387 | ||
12388 | if (level >= max_level) | |
12389 | return; | |
12390 | ||
12391 | dump_die_shallow (f, indent, die); | |
12392 | ||
12393 | if (die->child != NULL) | |
c906108c | 12394 | { |
d97bc12b DE |
12395 | print_spaces (indent, f); |
12396 | fprintf_unfiltered (f, " Children:"); | |
12397 | if (level + 1 < max_level) | |
12398 | { | |
12399 | fprintf_unfiltered (f, "\n"); | |
12400 | dump_die_1 (f, level + 1, max_level, die->child); | |
12401 | } | |
12402 | else | |
12403 | { | |
12404 | fprintf_unfiltered (f, " [not printed, max nesting level reached]\n"); | |
12405 | } | |
12406 | } | |
12407 | ||
12408 | if (die->sibling != NULL && level > 0) | |
12409 | { | |
12410 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
12411 | } |
12412 | } | |
12413 | ||
d97bc12b DE |
12414 | /* This is called from the pdie macro in gdbinit.in. |
12415 | It's not static so gcc will keep a copy callable from gdb. */ | |
12416 | ||
12417 | void | |
12418 | dump_die (struct die_info *die, int max_level) | |
12419 | { | |
12420 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
12421 | } | |
12422 | ||
f9aca02d | 12423 | static void |
51545339 | 12424 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 12425 | { |
51545339 | 12426 | void **slot; |
c906108c | 12427 | |
51545339 DJ |
12428 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
12429 | ||
12430 | *slot = die; | |
c906108c SS |
12431 | } |
12432 | ||
93311388 DE |
12433 | static int |
12434 | is_ref_attr (struct attribute *attr) | |
c906108c | 12435 | { |
c906108c SS |
12436 | switch (attr->form) |
12437 | { | |
12438 | case DW_FORM_ref_addr: | |
c906108c SS |
12439 | case DW_FORM_ref1: |
12440 | case DW_FORM_ref2: | |
12441 | case DW_FORM_ref4: | |
613e1657 | 12442 | case DW_FORM_ref8: |
c906108c | 12443 | case DW_FORM_ref_udata: |
93311388 | 12444 | return 1; |
c906108c | 12445 | default: |
93311388 | 12446 | return 0; |
c906108c | 12447 | } |
93311388 DE |
12448 | } |
12449 | ||
12450 | static unsigned int | |
12451 | dwarf2_get_ref_die_offset (struct attribute *attr) | |
12452 | { | |
12453 | if (is_ref_attr (attr)) | |
12454 | return DW_ADDR (attr); | |
12455 | ||
12456 | complaint (&symfile_complaints, | |
12457 | _("unsupported die ref attribute form: '%s'"), | |
12458 | dwarf_form_name (attr->form)); | |
12459 | return 0; | |
c906108c SS |
12460 | } |
12461 | ||
43bbcdc2 PH |
12462 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
12463 | * the value held by the attribute is not constant. */ | |
a02abb62 | 12464 | |
43bbcdc2 | 12465 | static LONGEST |
a02abb62 JB |
12466 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
12467 | { | |
12468 | if (attr->form == DW_FORM_sdata) | |
12469 | return DW_SND (attr); | |
12470 | else if (attr->form == DW_FORM_udata | |
12471 | || attr->form == DW_FORM_data1 | |
12472 | || attr->form == DW_FORM_data2 | |
12473 | || attr->form == DW_FORM_data4 | |
12474 | || attr->form == DW_FORM_data8) | |
12475 | return DW_UNSND (attr); | |
12476 | else | |
12477 | { | |
e2e0b3e5 | 12478 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
12479 | dwarf_form_name (attr->form)); |
12480 | return default_value; | |
12481 | } | |
12482 | } | |
12483 | ||
03dd20cc | 12484 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
12485 | unit and add it to our queue. |
12486 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
12487 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 12488 | |
348e048f | 12489 | static int |
03dd20cc DJ |
12490 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
12491 | struct dwarf2_per_cu_data *per_cu) | |
12492 | { | |
98bfdba5 PA |
12493 | /* We may arrive here during partial symbol reading, if we need full |
12494 | DIEs to process an unusual case (e.g. template arguments). Do | |
12495 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
12496 | if (dwarf2_per_objfile->reading_partial_symbols) | |
12497 | { | |
12498 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
12499 | return 1; | |
12500 | return 0; | |
12501 | } | |
12502 | ||
03dd20cc DJ |
12503 | /* Mark the dependence relation so that we don't flush PER_CU |
12504 | too early. */ | |
12505 | dwarf2_add_dependence (this_cu, per_cu); | |
12506 | ||
12507 | /* If it's already on the queue, we have nothing to do. */ | |
12508 | if (per_cu->queued) | |
348e048f | 12509 | return 0; |
03dd20cc DJ |
12510 | |
12511 | /* If the compilation unit is already loaded, just mark it as | |
12512 | used. */ | |
12513 | if (per_cu->cu != NULL) | |
12514 | { | |
12515 | per_cu->cu->last_used = 0; | |
348e048f | 12516 | return 0; |
03dd20cc DJ |
12517 | } |
12518 | ||
12519 | /* Add it to the queue. */ | |
12520 | queue_comp_unit (per_cu, this_cu->objfile); | |
348e048f DE |
12521 | |
12522 | return 1; | |
12523 | } | |
12524 | ||
12525 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
12526 | On entry *REF_CU is the CU of SRC_DIE. | |
12527 | On exit *REF_CU is the CU of the result. */ | |
12528 | ||
12529 | static struct die_info * | |
12530 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
12531 | struct dwarf2_cu **ref_cu) | |
12532 | { | |
12533 | struct die_info *die; | |
12534 | ||
12535 | if (is_ref_attr (attr)) | |
12536 | die = follow_die_ref (src_die, attr, ref_cu); | |
12537 | else if (attr->form == DW_FORM_sig8) | |
12538 | die = follow_die_sig (src_die, attr, ref_cu); | |
12539 | else | |
12540 | { | |
12541 | dump_die_for_error (src_die); | |
12542 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
12543 | (*ref_cu)->objfile->name); | |
12544 | } | |
12545 | ||
12546 | return die; | |
03dd20cc DJ |
12547 | } |
12548 | ||
5c631832 JK |
12549 | /* Follow reference OFFSET. |
12550 | On entry *REF_CU is the CU of source DIE referencing OFFSET. | |
f504f079 DE |
12551 | On exit *REF_CU is the CU of the result. */ |
12552 | ||
f9aca02d | 12553 | static struct die_info * |
5c631832 | 12554 | follow_die_offset (unsigned int offset, struct dwarf2_cu **ref_cu) |
c906108c | 12555 | { |
10b3939b | 12556 | struct die_info temp_die; |
f2f0e013 | 12557 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 12558 | |
348e048f DE |
12559 | gdb_assert (cu->per_cu != NULL); |
12560 | ||
98bfdba5 PA |
12561 | target_cu = cu; |
12562 | ||
348e048f DE |
12563 | if (cu->per_cu->from_debug_types) |
12564 | { | |
12565 | /* .debug_types CUs cannot reference anything outside their CU. | |
12566 | If they need to, they have to reference a signatured type via | |
12567 | DW_FORM_sig8. */ | |
12568 | if (! offset_in_cu_p (&cu->header, offset)) | |
5c631832 | 12569 | return NULL; |
348e048f DE |
12570 | } |
12571 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
12572 | { |
12573 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 12574 | |
45452591 | 12575 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
12576 | |
12577 | /* If necessary, add it to the queue and load its DIEs. */ | |
348e048f DE |
12578 | if (maybe_queue_comp_unit (cu, per_cu)) |
12579 | load_full_comp_unit (per_cu, cu->objfile); | |
03dd20cc | 12580 | |
10b3939b DJ |
12581 | target_cu = per_cu->cu; |
12582 | } | |
98bfdba5 PA |
12583 | else if (cu->dies == NULL) |
12584 | { | |
12585 | /* We're loading full DIEs during partial symbol reading. */ | |
12586 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
12587 | load_full_comp_unit (cu->per_cu, cu->objfile); | |
12588 | } | |
c906108c | 12589 | |
f2f0e013 | 12590 | *ref_cu = target_cu; |
51545339 | 12591 | temp_die.offset = offset; |
5c631832 JK |
12592 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset); |
12593 | } | |
10b3939b | 12594 | |
5c631832 JK |
12595 | /* Follow reference attribute ATTR of SRC_DIE. |
12596 | On entry *REF_CU is the CU of SRC_DIE. | |
12597 | On exit *REF_CU is the CU of the result. */ | |
12598 | ||
12599 | static struct die_info * | |
12600 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
12601 | struct dwarf2_cu **ref_cu) | |
12602 | { | |
12603 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
12604 | struct dwarf2_cu *cu = *ref_cu; | |
12605 | struct die_info *die; | |
12606 | ||
12607 | die = follow_die_offset (offset, ref_cu); | |
12608 | if (!die) | |
12609 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
12610 | "at 0x%x [in module %s]"), | |
12611 | offset, src_die->offset, cu->objfile->name); | |
348e048f | 12612 | |
5c631832 JK |
12613 | return die; |
12614 | } | |
12615 | ||
12616 | /* Return DWARF block and its CU referenced by OFFSET at PER_CU. Returned | |
12617 | value is intended for DW_OP_call*. */ | |
12618 | ||
12619 | struct dwarf2_locexpr_baton | |
12620 | dwarf2_fetch_die_location_block (unsigned int offset, | |
12621 | struct dwarf2_per_cu_data *per_cu) | |
12622 | { | |
12623 | struct dwarf2_cu *cu = per_cu->cu; | |
12624 | struct die_info *die; | |
12625 | struct attribute *attr; | |
12626 | struct dwarf2_locexpr_baton retval; | |
12627 | ||
12628 | die = follow_die_offset (offset, &cu); | |
12629 | if (!die) | |
12630 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
12631 | offset, per_cu->cu->objfile->name); | |
12632 | ||
12633 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
12634 | if (!attr) | |
12635 | { | |
12636 | /* DWARF: "If there is no such attribute, then there is no effect.". */ | |
12637 | ||
12638 | retval.data = NULL; | |
12639 | retval.size = 0; | |
12640 | } | |
12641 | else | |
12642 | { | |
12643 | if (!attr_form_is_block (attr)) | |
12644 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
12645 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
12646 | offset, per_cu->cu->objfile->name); | |
12647 | ||
12648 | retval.data = DW_BLOCK (attr)->data; | |
12649 | retval.size = DW_BLOCK (attr)->size; | |
12650 | } | |
12651 | retval.per_cu = cu->per_cu; | |
12652 | return retval; | |
348e048f DE |
12653 | } |
12654 | ||
12655 | /* Follow the signature attribute ATTR in SRC_DIE. | |
12656 | On entry *REF_CU is the CU of SRC_DIE. | |
12657 | On exit *REF_CU is the CU of the result. */ | |
12658 | ||
12659 | static struct die_info * | |
12660 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
12661 | struct dwarf2_cu **ref_cu) | |
12662 | { | |
12663 | struct objfile *objfile = (*ref_cu)->objfile; | |
12664 | struct die_info temp_die; | |
12665 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
12666 | struct dwarf2_cu *sig_cu; | |
12667 | struct die_info *die; | |
12668 | ||
12669 | /* sig_type will be NULL if the signatured type is missing from | |
12670 | the debug info. */ | |
12671 | if (sig_type == NULL) | |
12672 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
12673 | "at 0x%x [in module %s]"), | |
12674 | src_die->offset, objfile->name); | |
12675 | ||
12676 | /* If necessary, add it to the queue and load its DIEs. */ | |
12677 | ||
12678 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu)) | |
12679 | read_signatured_type (objfile, sig_type); | |
12680 | ||
12681 | gdb_assert (sig_type->per_cu.cu != NULL); | |
12682 | ||
12683 | sig_cu = sig_type->per_cu.cu; | |
12684 | temp_die.offset = sig_cu->header.offset + sig_type->type_offset; | |
12685 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, temp_die.offset); | |
12686 | if (die) | |
12687 | { | |
12688 | *ref_cu = sig_cu; | |
12689 | return die; | |
12690 | } | |
12691 | ||
12692 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced from DIE " | |
12693 | "at 0x%x [in module %s]"), | |
12694 | sig_type->type_offset, src_die->offset, objfile->name); | |
12695 | } | |
12696 | ||
12697 | /* Given an offset of a signatured type, return its signatured_type. */ | |
12698 | ||
12699 | static struct signatured_type * | |
12700 | lookup_signatured_type_at_offset (struct objfile *objfile, unsigned int offset) | |
12701 | { | |
12702 | gdb_byte *info_ptr = dwarf2_per_objfile->types.buffer + offset; | |
12703 | unsigned int length, initial_length_size; | |
12704 | unsigned int sig_offset; | |
12705 | struct signatured_type find_entry, *type_sig; | |
12706 | ||
12707 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
12708 | sig_offset = (initial_length_size | |
12709 | + 2 /*version*/ | |
12710 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
12711 | + 1 /*address_size*/); | |
12712 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
12713 | type_sig = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
12714 | ||
12715 | /* This is only used to lookup previously recorded types. | |
12716 | If we didn't find it, it's our bug. */ | |
12717 | gdb_assert (type_sig != NULL); | |
12718 | gdb_assert (offset == type_sig->offset); | |
12719 | ||
12720 | return type_sig; | |
12721 | } | |
12722 | ||
12723 | /* Read in signatured type at OFFSET and build its CU and die(s). */ | |
12724 | ||
12725 | static void | |
12726 | read_signatured_type_at_offset (struct objfile *objfile, | |
12727 | unsigned int offset) | |
12728 | { | |
12729 | struct signatured_type *type_sig; | |
12730 | ||
be391dca TT |
12731 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
12732 | ||
348e048f DE |
12733 | /* We have the section offset, but we need the signature to do the |
12734 | hash table lookup. */ | |
12735 | type_sig = lookup_signatured_type_at_offset (objfile, offset); | |
12736 | ||
12737 | gdb_assert (type_sig->per_cu.cu == NULL); | |
12738 | ||
12739 | read_signatured_type (objfile, type_sig); | |
12740 | ||
12741 | gdb_assert (type_sig->per_cu.cu != NULL); | |
12742 | } | |
12743 | ||
12744 | /* Read in a signatured type and build its CU and DIEs. */ | |
12745 | ||
12746 | static void | |
12747 | read_signatured_type (struct objfile *objfile, | |
12748 | struct signatured_type *type_sig) | |
12749 | { | |
1fd400ff | 12750 | gdb_byte *types_ptr; |
348e048f DE |
12751 | struct die_reader_specs reader_specs; |
12752 | struct dwarf2_cu *cu; | |
12753 | ULONGEST signature; | |
12754 | struct cleanup *back_to, *free_cu_cleanup; | |
12755 | struct attribute *attr; | |
12756 | ||
1fd400ff TT |
12757 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
12758 | types_ptr = dwarf2_per_objfile->types.buffer + type_sig->offset; | |
12759 | ||
348e048f DE |
12760 | gdb_assert (type_sig->per_cu.cu == NULL); |
12761 | ||
12762 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
12763 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
12764 | obstack_init (&cu->comp_unit_obstack); | |
12765 | cu->objfile = objfile; | |
12766 | type_sig->per_cu.cu = cu; | |
12767 | cu->per_cu = &type_sig->per_cu; | |
12768 | ||
12769 | /* If an error occurs while loading, release our storage. */ | |
12770 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
12771 | ||
12772 | types_ptr = read_type_comp_unit_head (&cu->header, &signature, | |
12773 | types_ptr, objfile->obfd); | |
12774 | gdb_assert (signature == type_sig->signature); | |
12775 | ||
12776 | cu->die_hash | |
12777 | = htab_create_alloc_ex (cu->header.length / 12, | |
12778 | die_hash, | |
12779 | die_eq, | |
12780 | NULL, | |
12781 | &cu->comp_unit_obstack, | |
12782 | hashtab_obstack_allocate, | |
12783 | dummy_obstack_deallocate); | |
12784 | ||
12785 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
12786 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
12787 | ||
12788 | init_cu_die_reader (&reader_specs, cu); | |
12789 | ||
12790 | cu->dies = read_die_and_children (&reader_specs, types_ptr, &types_ptr, | |
12791 | NULL /*parent*/); | |
12792 | ||
12793 | /* We try not to read any attributes in this function, because not | |
12794 | all objfiles needed for references have been loaded yet, and symbol | |
12795 | table processing isn't initialized. But we have to set the CU language, | |
12796 | or we won't be able to build types correctly. */ | |
12797 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
12798 | if (attr) | |
12799 | set_cu_language (DW_UNSND (attr), cu); | |
12800 | else | |
12801 | set_cu_language (language_minimal, cu); | |
12802 | ||
12803 | do_cleanups (back_to); | |
12804 | ||
12805 | /* We've successfully allocated this compilation unit. Let our caller | |
12806 | clean it up when finished with it. */ | |
12807 | discard_cleanups (free_cu_cleanup); | |
12808 | ||
12809 | type_sig->per_cu.cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
12810 | dwarf2_per_objfile->read_in_chain = &type_sig->per_cu; | |
c906108c SS |
12811 | } |
12812 | ||
c906108c SS |
12813 | /* Decode simple location descriptions. |
12814 | Given a pointer to a dwarf block that defines a location, compute | |
12815 | the location and return the value. | |
12816 | ||
4cecd739 DJ |
12817 | NOTE drow/2003-11-18: This function is called in two situations |
12818 | now: for the address of static or global variables (partial symbols | |
12819 | only) and for offsets into structures which are expected to be | |
12820 | (more or less) constant. The partial symbol case should go away, | |
12821 | and only the constant case should remain. That will let this | |
12822 | function complain more accurately. A few special modes are allowed | |
12823 | without complaint for global variables (for instance, global | |
12824 | register values and thread-local values). | |
c906108c SS |
12825 | |
12826 | A location description containing no operations indicates that the | |
4cecd739 | 12827 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
12828 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
12829 | callers will only want a very basic result and this can become a | |
12830 | complaint. | |
c906108c | 12831 | |
c906108c SS |
12832 | Note that stack[0] is unused except as a default error return. |
12833 | Note that stack overflow is not yet handled. */ | |
12834 | ||
12835 | static CORE_ADDR | |
e7c27a73 | 12836 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 12837 | { |
e7c27a73 | 12838 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12839 | int i; |
12840 | int size = blk->size; | |
fe1b8b76 | 12841 | gdb_byte *data = blk->data; |
c906108c SS |
12842 | CORE_ADDR stack[64]; |
12843 | int stacki; | |
12844 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 12845 | gdb_byte op; |
c906108c SS |
12846 | |
12847 | i = 0; | |
12848 | stacki = 0; | |
12849 | stack[stacki] = 0; | |
c906108c SS |
12850 | |
12851 | while (i < size) | |
12852 | { | |
c906108c SS |
12853 | op = data[i++]; |
12854 | switch (op) | |
12855 | { | |
f1bea926 JM |
12856 | case DW_OP_lit0: |
12857 | case DW_OP_lit1: | |
12858 | case DW_OP_lit2: | |
12859 | case DW_OP_lit3: | |
12860 | case DW_OP_lit4: | |
12861 | case DW_OP_lit5: | |
12862 | case DW_OP_lit6: | |
12863 | case DW_OP_lit7: | |
12864 | case DW_OP_lit8: | |
12865 | case DW_OP_lit9: | |
12866 | case DW_OP_lit10: | |
12867 | case DW_OP_lit11: | |
12868 | case DW_OP_lit12: | |
12869 | case DW_OP_lit13: | |
12870 | case DW_OP_lit14: | |
12871 | case DW_OP_lit15: | |
12872 | case DW_OP_lit16: | |
12873 | case DW_OP_lit17: | |
12874 | case DW_OP_lit18: | |
12875 | case DW_OP_lit19: | |
12876 | case DW_OP_lit20: | |
12877 | case DW_OP_lit21: | |
12878 | case DW_OP_lit22: | |
12879 | case DW_OP_lit23: | |
12880 | case DW_OP_lit24: | |
12881 | case DW_OP_lit25: | |
12882 | case DW_OP_lit26: | |
12883 | case DW_OP_lit27: | |
12884 | case DW_OP_lit28: | |
12885 | case DW_OP_lit29: | |
12886 | case DW_OP_lit30: | |
12887 | case DW_OP_lit31: | |
12888 | stack[++stacki] = op - DW_OP_lit0; | |
12889 | break; | |
12890 | ||
c906108c SS |
12891 | case DW_OP_reg0: |
12892 | case DW_OP_reg1: | |
12893 | case DW_OP_reg2: | |
12894 | case DW_OP_reg3: | |
12895 | case DW_OP_reg4: | |
12896 | case DW_OP_reg5: | |
12897 | case DW_OP_reg6: | |
12898 | case DW_OP_reg7: | |
12899 | case DW_OP_reg8: | |
12900 | case DW_OP_reg9: | |
12901 | case DW_OP_reg10: | |
12902 | case DW_OP_reg11: | |
12903 | case DW_OP_reg12: | |
12904 | case DW_OP_reg13: | |
12905 | case DW_OP_reg14: | |
12906 | case DW_OP_reg15: | |
12907 | case DW_OP_reg16: | |
12908 | case DW_OP_reg17: | |
12909 | case DW_OP_reg18: | |
12910 | case DW_OP_reg19: | |
12911 | case DW_OP_reg20: | |
12912 | case DW_OP_reg21: | |
12913 | case DW_OP_reg22: | |
12914 | case DW_OP_reg23: | |
12915 | case DW_OP_reg24: | |
12916 | case DW_OP_reg25: | |
12917 | case DW_OP_reg26: | |
12918 | case DW_OP_reg27: | |
12919 | case DW_OP_reg28: | |
12920 | case DW_OP_reg29: | |
12921 | case DW_OP_reg30: | |
12922 | case DW_OP_reg31: | |
c906108c | 12923 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
12924 | if (i < size) |
12925 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
12926 | break; |
12927 | ||
12928 | case DW_OP_regx: | |
c906108c SS |
12929 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
12930 | i += bytes_read; | |
c906108c | 12931 | stack[++stacki] = unsnd; |
4cecd739 DJ |
12932 | if (i < size) |
12933 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
12934 | break; |
12935 | ||
12936 | case DW_OP_addr: | |
107d2387 | 12937 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 12938 | cu, &bytes_read); |
107d2387 | 12939 | i += bytes_read; |
c906108c SS |
12940 | break; |
12941 | ||
12942 | case DW_OP_const1u: | |
12943 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
12944 | i += 1; | |
12945 | break; | |
12946 | ||
12947 | case DW_OP_const1s: | |
12948 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
12949 | i += 1; | |
12950 | break; | |
12951 | ||
12952 | case DW_OP_const2u: | |
12953 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
12954 | i += 2; | |
12955 | break; | |
12956 | ||
12957 | case DW_OP_const2s: | |
12958 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
12959 | i += 2; | |
12960 | break; | |
12961 | ||
12962 | case DW_OP_const4u: | |
12963 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
12964 | i += 4; | |
12965 | break; | |
12966 | ||
12967 | case DW_OP_const4s: | |
12968 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
12969 | i += 4; | |
12970 | break; | |
12971 | ||
12972 | case DW_OP_constu: | |
12973 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 12974 | &bytes_read); |
c906108c SS |
12975 | i += bytes_read; |
12976 | break; | |
12977 | ||
12978 | case DW_OP_consts: | |
12979 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
12980 | i += bytes_read; | |
12981 | break; | |
12982 | ||
f1bea926 JM |
12983 | case DW_OP_dup: |
12984 | stack[stacki + 1] = stack[stacki]; | |
12985 | stacki++; | |
12986 | break; | |
12987 | ||
c906108c SS |
12988 | case DW_OP_plus: |
12989 | stack[stacki - 1] += stack[stacki]; | |
12990 | stacki--; | |
12991 | break; | |
12992 | ||
12993 | case DW_OP_plus_uconst: | |
12994 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
12995 | i += bytes_read; | |
12996 | break; | |
12997 | ||
12998 | case DW_OP_minus: | |
f1bea926 | 12999 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
13000 | stacki--; |
13001 | break; | |
13002 | ||
7a292a7a | 13003 | case DW_OP_deref: |
7a292a7a | 13004 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
13005 | this using GDB's address_class enum. This is valid for partial |
13006 | global symbols, although the variable's address will be bogus | |
13007 | in the psymtab. */ | |
7a292a7a | 13008 | if (i < size) |
4d3c2250 | 13009 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
13010 | break; |
13011 | ||
9d774e44 | 13012 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
13013 | /* The top of the stack has the offset from the beginning |
13014 | of the thread control block at which the variable is located. */ | |
13015 | /* Nothing should follow this operator, so the top of stack would | |
13016 | be returned. */ | |
4cecd739 DJ |
13017 | /* This is valid for partial global symbols, but the variable's |
13018 | address will be bogus in the psymtab. */ | |
9d774e44 | 13019 | if (i < size) |
4d3c2250 | 13020 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
13021 | break; |
13022 | ||
42be36b3 CT |
13023 | case DW_OP_GNU_uninit: |
13024 | break; | |
13025 | ||
c906108c | 13026 | default: |
e2e0b3e5 | 13027 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
9eae7c52 | 13028 | dwarf_stack_op_name (op, 1)); |
c906108c SS |
13029 | return (stack[stacki]); |
13030 | } | |
13031 | } | |
13032 | return (stack[stacki]); | |
13033 | } | |
13034 | ||
13035 | /* memory allocation interface */ | |
13036 | ||
c906108c | 13037 | static struct dwarf_block * |
7b5a2f43 | 13038 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
13039 | { |
13040 | struct dwarf_block *blk; | |
13041 | ||
13042 | blk = (struct dwarf_block *) | |
7b5a2f43 | 13043 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
13044 | return (blk); |
13045 | } | |
13046 | ||
13047 | static struct abbrev_info * | |
f3dd6933 | 13048 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
13049 | { |
13050 | struct abbrev_info *abbrev; | |
13051 | ||
f3dd6933 DJ |
13052 | abbrev = (struct abbrev_info *) |
13053 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
13054 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
13055 | return (abbrev); | |
13056 | } | |
13057 | ||
13058 | static struct die_info * | |
b60c80d6 | 13059 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
13060 | { |
13061 | struct die_info *die; | |
b60c80d6 DJ |
13062 | size_t size = sizeof (struct die_info); |
13063 | ||
13064 | if (num_attrs > 1) | |
13065 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 13066 | |
b60c80d6 | 13067 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
13068 | memset (die, 0, sizeof (struct die_info)); |
13069 | return (die); | |
13070 | } | |
2e276125 JB |
13071 | |
13072 | \f | |
13073 | /* Macro support. */ | |
13074 | ||
13075 | ||
13076 | /* Return the full name of file number I in *LH's file name table. | |
13077 | Use COMP_DIR as the name of the current directory of the | |
13078 | compilation. The result is allocated using xmalloc; the caller is | |
13079 | responsible for freeing it. */ | |
13080 | static char * | |
13081 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
13082 | { | |
6a83a1e6 EZ |
13083 | /* Is the file number a valid index into the line header's file name |
13084 | table? Remember that file numbers start with one, not zero. */ | |
13085 | if (1 <= file && file <= lh->num_file_names) | |
13086 | { | |
13087 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 13088 | |
6a83a1e6 EZ |
13089 | if (IS_ABSOLUTE_PATH (fe->name)) |
13090 | return xstrdup (fe->name); | |
13091 | else | |
13092 | { | |
13093 | const char *dir; | |
13094 | int dir_len; | |
13095 | char *full_name; | |
13096 | ||
13097 | if (fe->dir_index) | |
13098 | dir = lh->include_dirs[fe->dir_index - 1]; | |
13099 | else | |
13100 | dir = comp_dir; | |
13101 | ||
13102 | if (dir) | |
13103 | { | |
13104 | dir_len = strlen (dir); | |
13105 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
13106 | strcpy (full_name, dir); | |
13107 | full_name[dir_len] = '/'; | |
13108 | strcpy (full_name + dir_len + 1, fe->name); | |
13109 | return full_name; | |
13110 | } | |
13111 | else | |
13112 | return xstrdup (fe->name); | |
13113 | } | |
13114 | } | |
2e276125 JB |
13115 | else |
13116 | { | |
6a83a1e6 EZ |
13117 | /* The compiler produced a bogus file number. We can at least |
13118 | record the macro definitions made in the file, even if we | |
13119 | won't be able to find the file by name. */ | |
13120 | char fake_name[80]; | |
9a619af0 | 13121 | |
6a83a1e6 | 13122 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 13123 | |
6e70227d | 13124 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
13125 | _("bad file number in macro information (%d)"), |
13126 | file); | |
2e276125 | 13127 | |
6a83a1e6 | 13128 | return xstrdup (fake_name); |
2e276125 JB |
13129 | } |
13130 | } | |
13131 | ||
13132 | ||
13133 | static struct macro_source_file * | |
13134 | macro_start_file (int file, int line, | |
13135 | struct macro_source_file *current_file, | |
13136 | const char *comp_dir, | |
13137 | struct line_header *lh, struct objfile *objfile) | |
13138 | { | |
13139 | /* The full name of this source file. */ | |
13140 | char *full_name = file_full_name (file, lh, comp_dir); | |
13141 | ||
13142 | /* We don't create a macro table for this compilation unit | |
13143 | at all until we actually get a filename. */ | |
13144 | if (! pending_macros) | |
4a146b47 | 13145 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 13146 | objfile->macro_cache); |
2e276125 JB |
13147 | |
13148 | if (! current_file) | |
13149 | /* If we have no current file, then this must be the start_file | |
13150 | directive for the compilation unit's main source file. */ | |
13151 | current_file = macro_set_main (pending_macros, full_name); | |
13152 | else | |
13153 | current_file = macro_include (current_file, line, full_name); | |
13154 | ||
13155 | xfree (full_name); | |
6e70227d | 13156 | |
2e276125 JB |
13157 | return current_file; |
13158 | } | |
13159 | ||
13160 | ||
13161 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
13162 | followed by a null byte. */ | |
13163 | static char * | |
13164 | copy_string (const char *buf, int len) | |
13165 | { | |
13166 | char *s = xmalloc (len + 1); | |
9a619af0 | 13167 | |
2e276125 JB |
13168 | memcpy (s, buf, len); |
13169 | s[len] = '\0'; | |
2e276125 JB |
13170 | return s; |
13171 | } | |
13172 | ||
13173 | ||
13174 | static const char * | |
13175 | consume_improper_spaces (const char *p, const char *body) | |
13176 | { | |
13177 | if (*p == ' ') | |
13178 | { | |
4d3c2250 | 13179 | complaint (&symfile_complaints, |
e2e0b3e5 | 13180 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 13181 | body); |
2e276125 JB |
13182 | |
13183 | while (*p == ' ') | |
13184 | p++; | |
13185 | } | |
13186 | ||
13187 | return p; | |
13188 | } | |
13189 | ||
13190 | ||
13191 | static void | |
13192 | parse_macro_definition (struct macro_source_file *file, int line, | |
13193 | const char *body) | |
13194 | { | |
13195 | const char *p; | |
13196 | ||
13197 | /* The body string takes one of two forms. For object-like macro | |
13198 | definitions, it should be: | |
13199 | ||
13200 | <macro name> " " <definition> | |
13201 | ||
13202 | For function-like macro definitions, it should be: | |
13203 | ||
13204 | <macro name> "() " <definition> | |
13205 | or | |
13206 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
13207 | ||
13208 | Spaces may appear only where explicitly indicated, and in the | |
13209 | <definition>. | |
13210 | ||
13211 | The Dwarf 2 spec says that an object-like macro's name is always | |
13212 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 13213 | the space when the macro's definition is the empty string. |
2e276125 JB |
13214 | |
13215 | The Dwarf 2 spec says that there should be no spaces between the | |
13216 | formal arguments in a function-like macro's formal argument list, | |
13217 | but versions of GCC around March 2002 include spaces after the | |
13218 | commas. */ | |
13219 | ||
13220 | ||
13221 | /* Find the extent of the macro name. The macro name is terminated | |
13222 | by either a space or null character (for an object-like macro) or | |
13223 | an opening paren (for a function-like macro). */ | |
13224 | for (p = body; *p; p++) | |
13225 | if (*p == ' ' || *p == '(') | |
13226 | break; | |
13227 | ||
13228 | if (*p == ' ' || *p == '\0') | |
13229 | { | |
13230 | /* It's an object-like macro. */ | |
13231 | int name_len = p - body; | |
13232 | char *name = copy_string (body, name_len); | |
13233 | const char *replacement; | |
13234 | ||
13235 | if (*p == ' ') | |
13236 | replacement = body + name_len + 1; | |
13237 | else | |
13238 | { | |
4d3c2250 | 13239 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13240 | replacement = body + name_len; |
13241 | } | |
6e70227d | 13242 | |
2e276125 JB |
13243 | macro_define_object (file, line, name, replacement); |
13244 | ||
13245 | xfree (name); | |
13246 | } | |
13247 | else if (*p == '(') | |
13248 | { | |
13249 | /* It's a function-like macro. */ | |
13250 | char *name = copy_string (body, p - body); | |
13251 | int argc = 0; | |
13252 | int argv_size = 1; | |
13253 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
13254 | ||
13255 | p++; | |
13256 | ||
13257 | p = consume_improper_spaces (p, body); | |
13258 | ||
13259 | /* Parse the formal argument list. */ | |
13260 | while (*p && *p != ')') | |
13261 | { | |
13262 | /* Find the extent of the current argument name. */ | |
13263 | const char *arg_start = p; | |
13264 | ||
13265 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
13266 | p++; | |
13267 | ||
13268 | if (! *p || p == arg_start) | |
4d3c2250 | 13269 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13270 | else |
13271 | { | |
13272 | /* Make sure argv has room for the new argument. */ | |
13273 | if (argc >= argv_size) | |
13274 | { | |
13275 | argv_size *= 2; | |
13276 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
13277 | } | |
13278 | ||
13279 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
13280 | } | |
13281 | ||
13282 | p = consume_improper_spaces (p, body); | |
13283 | ||
13284 | /* Consume the comma, if present. */ | |
13285 | if (*p == ',') | |
13286 | { | |
13287 | p++; | |
13288 | ||
13289 | p = consume_improper_spaces (p, body); | |
13290 | } | |
13291 | } | |
13292 | ||
13293 | if (*p == ')') | |
13294 | { | |
13295 | p++; | |
13296 | ||
13297 | if (*p == ' ') | |
13298 | /* Perfectly formed definition, no complaints. */ | |
13299 | macro_define_function (file, line, name, | |
6e70227d | 13300 | argc, (const char **) argv, |
2e276125 JB |
13301 | p + 1); |
13302 | else if (*p == '\0') | |
13303 | { | |
13304 | /* Complain, but do define it. */ | |
4d3c2250 | 13305 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 13306 | macro_define_function (file, line, name, |
6e70227d | 13307 | argc, (const char **) argv, |
2e276125 JB |
13308 | p); |
13309 | } | |
13310 | else | |
13311 | /* Just complain. */ | |
4d3c2250 | 13312 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13313 | } |
13314 | else | |
13315 | /* Just complain. */ | |
4d3c2250 | 13316 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13317 | |
13318 | xfree (name); | |
13319 | { | |
13320 | int i; | |
13321 | ||
13322 | for (i = 0; i < argc; i++) | |
13323 | xfree (argv[i]); | |
13324 | } | |
13325 | xfree (argv); | |
13326 | } | |
13327 | else | |
4d3c2250 | 13328 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
13329 | } |
13330 | ||
13331 | ||
13332 | static void | |
13333 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
13334 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 13335 | struct dwarf2_cu *cu) |
2e276125 | 13336 | { |
fe1b8b76 | 13337 | gdb_byte *mac_ptr, *mac_end; |
2e276125 | 13338 | struct macro_source_file *current_file = 0; |
757a13d0 JK |
13339 | enum dwarf_macinfo_record_type macinfo_type; |
13340 | int at_commandline; | |
2e276125 | 13341 | |
be391dca TT |
13342 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
13343 | &dwarf2_per_objfile->macinfo); | |
dce234bc | 13344 | if (dwarf2_per_objfile->macinfo.buffer == NULL) |
2e276125 | 13345 | { |
e2e0b3e5 | 13346 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
13347 | return; |
13348 | } | |
13349 | ||
757a13d0 JK |
13350 | /* First pass: Find the name of the base filename. |
13351 | This filename is needed in order to process all macros whose definition | |
13352 | (or undefinition) comes from the command line. These macros are defined | |
13353 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
13354 | associated to the base file. | |
13355 | ||
13356 | To determine the base file name, we scan the macro definitions until we | |
13357 | reach the first DW_MACINFO_start_file entry. We then initialize | |
13358 | CURRENT_FILE accordingly so that any macro definition found before the | |
13359 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
13360 | ||
dce234bc PP |
13361 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
13362 | mac_end = dwarf2_per_objfile->macinfo.buffer | |
13363 | + dwarf2_per_objfile->macinfo.size; | |
2e276125 | 13364 | |
757a13d0 | 13365 | do |
2e276125 | 13366 | { |
2e276125 JB |
13367 | /* Do we at least have room for a macinfo type byte? */ |
13368 | if (mac_ptr >= mac_end) | |
13369 | { | |
757a13d0 JK |
13370 | /* Complaint is printed during the second pass as GDB will probably |
13371 | stop the first pass earlier upon finding DW_MACINFO_start_file. */ | |
13372 | break; | |
2e276125 JB |
13373 | } |
13374 | ||
13375 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
13376 | mac_ptr++; | |
13377 | ||
13378 | switch (macinfo_type) | |
13379 | { | |
13380 | /* A zero macinfo type indicates the end of the macro | |
13381 | information. */ | |
13382 | case 0: | |
757a13d0 JK |
13383 | break; |
13384 | ||
13385 | case DW_MACINFO_define: | |
13386 | case DW_MACINFO_undef: | |
13387 | /* Only skip the data by MAC_PTR. */ | |
13388 | { | |
13389 | unsigned int bytes_read; | |
13390 | ||
13391 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13392 | mac_ptr += bytes_read; | |
9b1c24c8 | 13393 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
13394 | mac_ptr += bytes_read; |
13395 | } | |
13396 | break; | |
13397 | ||
13398 | case DW_MACINFO_start_file: | |
13399 | { | |
13400 | unsigned int bytes_read; | |
13401 | int line, file; | |
13402 | ||
13403 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13404 | mac_ptr += bytes_read; | |
13405 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13406 | mac_ptr += bytes_read; | |
13407 | ||
13408 | current_file = macro_start_file (file, line, current_file, comp_dir, | |
13409 | lh, cu->objfile); | |
13410 | } | |
13411 | break; | |
13412 | ||
13413 | case DW_MACINFO_end_file: | |
13414 | /* No data to skip by MAC_PTR. */ | |
13415 | break; | |
13416 | ||
13417 | case DW_MACINFO_vendor_ext: | |
13418 | /* Only skip the data by MAC_PTR. */ | |
13419 | { | |
13420 | unsigned int bytes_read; | |
13421 | ||
13422 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13423 | mac_ptr += bytes_read; | |
9b1c24c8 | 13424 | read_direct_string (abfd, mac_ptr, &bytes_read); |
757a13d0 JK |
13425 | mac_ptr += bytes_read; |
13426 | } | |
13427 | break; | |
13428 | ||
13429 | default: | |
13430 | break; | |
13431 | } | |
13432 | } while (macinfo_type != 0 && current_file == NULL); | |
13433 | ||
13434 | /* Second pass: Process all entries. | |
13435 | ||
13436 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
13437 | command-line macro definitions/undefinitions. This flag is unset when we | |
13438 | reach the first DW_MACINFO_start_file entry. */ | |
13439 | ||
dce234bc | 13440 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
757a13d0 JK |
13441 | |
13442 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
13443 | GDB is still reading the definitions from command line. First | |
13444 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
13445 | to create CURRENT_FILE for the main source holding also the command line | |
13446 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
13447 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
13448 | ||
13449 | at_commandline = 1; | |
13450 | ||
13451 | do | |
13452 | { | |
13453 | /* Do we at least have room for a macinfo type byte? */ | |
13454 | if (mac_ptr >= mac_end) | |
13455 | { | |
13456 | dwarf2_macros_too_long_complaint (); | |
13457 | break; | |
13458 | } | |
13459 | ||
13460 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
13461 | mac_ptr++; | |
13462 | ||
13463 | switch (macinfo_type) | |
13464 | { | |
13465 | /* A zero macinfo type indicates the end of the macro | |
13466 | information. */ | |
13467 | case 0: | |
13468 | break; | |
2e276125 JB |
13469 | |
13470 | case DW_MACINFO_define: | |
13471 | case DW_MACINFO_undef: | |
13472 | { | |
891d2f0b | 13473 | unsigned int bytes_read; |
2e276125 JB |
13474 | int line; |
13475 | char *body; | |
13476 | ||
13477 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13478 | mac_ptr += bytes_read; | |
9b1c24c8 | 13479 | body = read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
13480 | mac_ptr += bytes_read; |
13481 | ||
13482 | if (! current_file) | |
757a13d0 JK |
13483 | { |
13484 | /* DWARF violation as no main source is present. */ | |
13485 | complaint (&symfile_complaints, | |
13486 | _("debug info with no main source gives macro %s " | |
13487 | "on line %d: %s"), | |
6e70227d DE |
13488 | macinfo_type == DW_MACINFO_define ? |
13489 | _("definition") : | |
905e0470 PM |
13490 | macinfo_type == DW_MACINFO_undef ? |
13491 | _("undefinition") : | |
13492 | _("something-or-other"), line, body); | |
757a13d0 JK |
13493 | break; |
13494 | } | |
13495 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) | |
4d3c2250 | 13496 | complaint (&symfile_complaints, |
757a13d0 JK |
13497 | _("debug info gives %s macro %s with %s line %d: %s"), |
13498 | at_commandline ? _("command-line") : _("in-file"), | |
905e0470 | 13499 | macinfo_type == DW_MACINFO_define ? |
6e70227d | 13500 | _("definition") : |
905e0470 PM |
13501 | macinfo_type == DW_MACINFO_undef ? |
13502 | _("undefinition") : | |
13503 | _("something-or-other"), | |
757a13d0 JK |
13504 | line == 0 ? _("zero") : _("non-zero"), line, body); |
13505 | ||
13506 | if (macinfo_type == DW_MACINFO_define) | |
13507 | parse_macro_definition (current_file, line, body); | |
13508 | else if (macinfo_type == DW_MACINFO_undef) | |
13509 | macro_undef (current_file, line, body); | |
2e276125 JB |
13510 | } |
13511 | break; | |
13512 | ||
13513 | case DW_MACINFO_start_file: | |
13514 | { | |
891d2f0b | 13515 | unsigned int bytes_read; |
2e276125 JB |
13516 | int line, file; |
13517 | ||
13518 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13519 | mac_ptr += bytes_read; | |
13520 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13521 | mac_ptr += bytes_read; | |
13522 | ||
757a13d0 JK |
13523 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) |
13524 | complaint (&symfile_complaints, | |
13525 | _("debug info gives source %d included " | |
13526 | "from %s at %s line %d"), | |
13527 | file, at_commandline ? _("command-line") : _("file"), | |
13528 | line == 0 ? _("zero") : _("non-zero"), line); | |
13529 | ||
13530 | if (at_commandline) | |
13531 | { | |
13532 | /* This DW_MACINFO_start_file was executed in the pass one. */ | |
13533 | at_commandline = 0; | |
13534 | } | |
13535 | else | |
13536 | current_file = macro_start_file (file, line, | |
13537 | current_file, comp_dir, | |
13538 | lh, cu->objfile); | |
2e276125 JB |
13539 | } |
13540 | break; | |
13541 | ||
13542 | case DW_MACINFO_end_file: | |
13543 | if (! current_file) | |
4d3c2250 | 13544 | complaint (&symfile_complaints, |
e2e0b3e5 | 13545 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
13546 | else |
13547 | { | |
13548 | current_file = current_file->included_by; | |
13549 | if (! current_file) | |
13550 | { | |
13551 | enum dwarf_macinfo_record_type next_type; | |
13552 | ||
13553 | /* GCC circa March 2002 doesn't produce the zero | |
13554 | type byte marking the end of the compilation | |
13555 | unit. Complain if it's not there, but exit no | |
13556 | matter what. */ | |
13557 | ||
13558 | /* Do we at least have room for a macinfo type byte? */ | |
13559 | if (mac_ptr >= mac_end) | |
13560 | { | |
4d3c2250 | 13561 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
13562 | return; |
13563 | } | |
13564 | ||
13565 | /* We don't increment mac_ptr here, so this is just | |
13566 | a look-ahead. */ | |
13567 | next_type = read_1_byte (abfd, mac_ptr); | |
13568 | if (next_type != 0) | |
4d3c2250 | 13569 | complaint (&symfile_complaints, |
e2e0b3e5 | 13570 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
13571 | |
13572 | return; | |
13573 | } | |
13574 | } | |
13575 | break; | |
13576 | ||
13577 | case DW_MACINFO_vendor_ext: | |
13578 | { | |
891d2f0b | 13579 | unsigned int bytes_read; |
2e276125 JB |
13580 | int constant; |
13581 | char *string; | |
13582 | ||
13583 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
13584 | mac_ptr += bytes_read; | |
9b1c24c8 | 13585 | string = read_direct_string (abfd, mac_ptr, &bytes_read); |
2e276125 JB |
13586 | mac_ptr += bytes_read; |
13587 | ||
13588 | /* We don't recognize any vendor extensions. */ | |
13589 | } | |
13590 | break; | |
13591 | } | |
757a13d0 | 13592 | } while (macinfo_type != 0); |
2e276125 | 13593 | } |
8e19ed76 PS |
13594 | |
13595 | /* Check if the attribute's form is a DW_FORM_block* | |
13596 | if so return true else false. */ | |
13597 | static int | |
13598 | attr_form_is_block (struct attribute *attr) | |
13599 | { | |
13600 | return (attr == NULL ? 0 : | |
13601 | attr->form == DW_FORM_block1 | |
13602 | || attr->form == DW_FORM_block2 | |
13603 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
13604 | || attr->form == DW_FORM_block |
13605 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 13606 | } |
4c2df51b | 13607 | |
c6a0999f JB |
13608 | /* Return non-zero if ATTR's value is a section offset --- classes |
13609 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
13610 | You may use DW_UNSND (attr) to retrieve such offsets. | |
13611 | ||
13612 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
13613 | may have a value that belongs to more than one of these classes; it | |
13614 | would be ambiguous if we did, because we use the same forms for all | |
13615 | of them. */ | |
3690dd37 JB |
13616 | static int |
13617 | attr_form_is_section_offset (struct attribute *attr) | |
13618 | { | |
13619 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
13620 | || attr->form == DW_FORM_data8 |
13621 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
13622 | } |
13623 | ||
13624 | ||
13625 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
13626 | zero otherwise. When this function returns true, you can apply | |
13627 | dwarf2_get_attr_constant_value to it. | |
13628 | ||
13629 | However, note that for some attributes you must check | |
13630 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
13631 | and DW_FORM_data8 are members of both the constant class, and of | |
13632 | the classes that contain offsets into other debug sections | |
13633 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
13634 | that, if an attribute's can be either a constant or one of the | |
13635 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
13636 | taken as section offsets, not constants. */ | |
13637 | static int | |
13638 | attr_form_is_constant (struct attribute *attr) | |
13639 | { | |
13640 | switch (attr->form) | |
13641 | { | |
13642 | case DW_FORM_sdata: | |
13643 | case DW_FORM_udata: | |
13644 | case DW_FORM_data1: | |
13645 | case DW_FORM_data2: | |
13646 | case DW_FORM_data4: | |
13647 | case DW_FORM_data8: | |
13648 | return 1; | |
13649 | default: | |
13650 | return 0; | |
13651 | } | |
13652 | } | |
13653 | ||
4c2df51b DJ |
13654 | static void |
13655 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 13656 | struct dwarf2_cu *cu) |
4c2df51b | 13657 | { |
3690dd37 | 13658 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
13659 | /* ".debug_loc" may not exist at all, or the offset may be outside |
13660 | the section. If so, fall through to the complaint in the | |
13661 | other branch. */ | |
dce234bc | 13662 | && DW_UNSND (attr) < dwarf2_per_objfile->loc.size) |
4c2df51b | 13663 | { |
0d53c4c4 | 13664 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 13665 | |
4a146b47 | 13666 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 13667 | sizeof (struct dwarf2_loclist_baton)); |
ae0d2f24 UW |
13668 | baton->per_cu = cu->per_cu; |
13669 | gdb_assert (baton->per_cu); | |
4c2df51b | 13670 | |
be391dca TT |
13671 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
13672 | &dwarf2_per_objfile->loc); | |
13673 | ||
0d53c4c4 DJ |
13674 | /* We don't know how long the location list is, but make sure we |
13675 | don't run off the edge of the section. */ | |
dce234bc PP |
13676 | baton->size = dwarf2_per_objfile->loc.size - DW_UNSND (attr); |
13677 | baton->data = dwarf2_per_objfile->loc.buffer + DW_UNSND (attr); | |
d00adf39 DE |
13678 | baton->base_address = cu->base_address; |
13679 | if (cu->base_known == 0) | |
0d53c4c4 | 13680 | complaint (&symfile_complaints, |
e2e0b3e5 | 13681 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 13682 | |
768a979c | 13683 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
13684 | SYMBOL_LOCATION_BATON (sym) = baton; |
13685 | } | |
13686 | else | |
13687 | { | |
13688 | struct dwarf2_locexpr_baton *baton; | |
13689 | ||
4a146b47 | 13690 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 13691 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
13692 | baton->per_cu = cu->per_cu; |
13693 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
13694 | |
13695 | if (attr_form_is_block (attr)) | |
13696 | { | |
13697 | /* Note that we're just copying the block's data pointer | |
13698 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
13699 | info_buffer for SYM's objfile; right now we never release |
13700 | that buffer, but when we do clean up properly this may | |
13701 | need to change. */ | |
0d53c4c4 DJ |
13702 | baton->size = DW_BLOCK (attr)->size; |
13703 | baton->data = DW_BLOCK (attr)->data; | |
13704 | } | |
13705 | else | |
13706 | { | |
13707 | dwarf2_invalid_attrib_class_complaint ("location description", | |
13708 | SYMBOL_NATURAL_NAME (sym)); | |
13709 | baton->size = 0; | |
13710 | baton->data = NULL; | |
13711 | } | |
6e70227d | 13712 | |
768a979c | 13713 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
13714 | SYMBOL_LOCATION_BATON (sym) = baton; |
13715 | } | |
4c2df51b | 13716 | } |
6502dd73 | 13717 | |
9aa1f1e3 TT |
13718 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
13719 | came from a separate debuginfo file, then the master objfile is | |
13720 | returned. */ | |
ae0d2f24 UW |
13721 | |
13722 | struct objfile * | |
13723 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
13724 | { | |
9291a0cd | 13725 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
13726 | |
13727 | /* Return the master objfile, so that we can report and look up the | |
13728 | correct file containing this variable. */ | |
13729 | if (objfile->separate_debug_objfile_backlink) | |
13730 | objfile = objfile->separate_debug_objfile_backlink; | |
13731 | ||
13732 | return objfile; | |
13733 | } | |
13734 | ||
13735 | /* Return the address size given in the compilation unit header for CU. */ | |
13736 | ||
13737 | CORE_ADDR | |
13738 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
13739 | { | |
13740 | if (per_cu->cu) | |
13741 | return per_cu->cu->header.addr_size; | |
13742 | else | |
13743 | { | |
13744 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 13745 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
13746 | struct dwarf2_per_objfile *per_objfile |
13747 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
dce234bc | 13748 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; |
ae0d2f24 | 13749 | struct comp_unit_head cu_header; |
9a619af0 | 13750 | |
ae0d2f24 UW |
13751 | memset (&cu_header, 0, sizeof cu_header); |
13752 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
13753 | return cu_header.addr_size; | |
13754 | } | |
13755 | } | |
13756 | ||
9eae7c52 TT |
13757 | /* Return the offset size given in the compilation unit header for CU. */ |
13758 | ||
13759 | int | |
13760 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
13761 | { | |
13762 | if (per_cu->cu) | |
13763 | return per_cu->cu->header.offset_size; | |
13764 | else | |
13765 | { | |
13766 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 13767 | struct objfile *objfile = per_cu->objfile; |
9eae7c52 TT |
13768 | struct dwarf2_per_objfile *per_objfile |
13769 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
13770 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; | |
13771 | struct comp_unit_head cu_header; | |
13772 | ||
13773 | memset (&cu_header, 0, sizeof cu_header); | |
13774 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
13775 | return cu_header.offset_size; | |
13776 | } | |
13777 | } | |
13778 | ||
9aa1f1e3 TT |
13779 | /* Return the text offset of the CU. The returned offset comes from |
13780 | this CU's objfile. If this objfile came from a separate debuginfo | |
13781 | file, then the offset may be different from the corresponding | |
13782 | offset in the parent objfile. */ | |
13783 | ||
13784 | CORE_ADDR | |
13785 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
13786 | { | |
bb3fa9d0 | 13787 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
13788 | |
13789 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
13790 | } | |
13791 | ||
348e048f DE |
13792 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
13793 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
13794 | |
13795 | static struct dwarf2_per_cu_data * | |
c764a876 | 13796 | dwarf2_find_containing_comp_unit (unsigned int offset, |
ae038cb0 DJ |
13797 | struct objfile *objfile) |
13798 | { | |
13799 | struct dwarf2_per_cu_data *this_cu; | |
13800 | int low, high; | |
13801 | ||
ae038cb0 DJ |
13802 | low = 0; |
13803 | high = dwarf2_per_objfile->n_comp_units - 1; | |
13804 | while (high > low) | |
13805 | { | |
13806 | int mid = low + (high - low) / 2; | |
9a619af0 | 13807 | |
ae038cb0 DJ |
13808 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) |
13809 | high = mid; | |
13810 | else | |
13811 | low = mid + 1; | |
13812 | } | |
13813 | gdb_assert (low == high); | |
13814 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
13815 | { | |
10b3939b | 13816 | if (low == 0) |
8a3fe4f8 AC |
13817 | error (_("Dwarf Error: could not find partial DIE containing " |
13818 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
13819 | (long) offset, bfd_get_filename (objfile->obfd)); |
13820 | ||
ae038cb0 DJ |
13821 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
13822 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
13823 | } | |
13824 | else | |
13825 | { | |
13826 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
13827 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
13828 | && offset >= this_cu->offset + this_cu->length) | |
c764a876 | 13829 | error (_("invalid dwarf2 offset %u"), offset); |
ae038cb0 DJ |
13830 | gdb_assert (offset < this_cu->offset + this_cu->length); |
13831 | return this_cu; | |
13832 | } | |
13833 | } | |
13834 | ||
10b3939b DJ |
13835 | /* Locate the compilation unit from OBJFILE which is located at exactly |
13836 | OFFSET. Raises an error on failure. */ | |
13837 | ||
ae038cb0 | 13838 | static struct dwarf2_per_cu_data * |
c764a876 | 13839 | dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile) |
ae038cb0 DJ |
13840 | { |
13841 | struct dwarf2_per_cu_data *this_cu; | |
9a619af0 | 13842 | |
ae038cb0 DJ |
13843 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); |
13844 | if (this_cu->offset != offset) | |
c764a876 | 13845 | error (_("no compilation unit with offset %u."), offset); |
ae038cb0 DJ |
13846 | return this_cu; |
13847 | } | |
13848 | ||
93311388 DE |
13849 | /* Malloc space for a dwarf2_cu for OBJFILE and initialize it. */ |
13850 | ||
13851 | static struct dwarf2_cu * | |
13852 | alloc_one_comp_unit (struct objfile *objfile) | |
13853 | { | |
13854 | struct dwarf2_cu *cu = xcalloc (1, sizeof (struct dwarf2_cu)); | |
13855 | cu->objfile = objfile; | |
13856 | obstack_init (&cu->comp_unit_obstack); | |
13857 | return cu; | |
13858 | } | |
13859 | ||
ae038cb0 DJ |
13860 | /* Release one cached compilation unit, CU. We unlink it from the tree |
13861 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
13862 | the caller is responsible for that. |
13863 | NOTE: DATA is a void * because this function is also used as a | |
13864 | cleanup routine. */ | |
ae038cb0 DJ |
13865 | |
13866 | static void | |
13867 | free_one_comp_unit (void *data) | |
13868 | { | |
13869 | struct dwarf2_cu *cu = data; | |
13870 | ||
13871 | if (cu->per_cu != NULL) | |
13872 | cu->per_cu->cu = NULL; | |
13873 | cu->per_cu = NULL; | |
13874 | ||
13875 | obstack_free (&cu->comp_unit_obstack, NULL); | |
13876 | ||
13877 | xfree (cu); | |
13878 | } | |
13879 | ||
72bf9492 | 13880 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
13881 | when we're finished with it. We can't free the pointer itself, but be |
13882 | sure to unlink it from the cache. Also release any associated storage | |
13883 | and perform cache maintenance. | |
72bf9492 DJ |
13884 | |
13885 | Only used during partial symbol parsing. */ | |
13886 | ||
13887 | static void | |
13888 | free_stack_comp_unit (void *data) | |
13889 | { | |
13890 | struct dwarf2_cu *cu = data; | |
13891 | ||
13892 | obstack_free (&cu->comp_unit_obstack, NULL); | |
13893 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
13894 | |
13895 | if (cu->per_cu != NULL) | |
13896 | { | |
13897 | /* This compilation unit is on the stack in our caller, so we | |
13898 | should not xfree it. Just unlink it. */ | |
13899 | cu->per_cu->cu = NULL; | |
13900 | cu->per_cu = NULL; | |
13901 | ||
13902 | /* If we had a per-cu pointer, then we may have other compilation | |
13903 | units loaded, so age them now. */ | |
13904 | age_cached_comp_units (); | |
13905 | } | |
13906 | } | |
13907 | ||
13908 | /* Free all cached compilation units. */ | |
13909 | ||
13910 | static void | |
13911 | free_cached_comp_units (void *data) | |
13912 | { | |
13913 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
13914 | ||
13915 | per_cu = dwarf2_per_objfile->read_in_chain; | |
13916 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
13917 | while (per_cu != NULL) | |
13918 | { | |
13919 | struct dwarf2_per_cu_data *next_cu; | |
13920 | ||
13921 | next_cu = per_cu->cu->read_in_chain; | |
13922 | ||
13923 | free_one_comp_unit (per_cu->cu); | |
13924 | *last_chain = next_cu; | |
13925 | ||
13926 | per_cu = next_cu; | |
13927 | } | |
13928 | } | |
13929 | ||
13930 | /* Increase the age counter on each cached compilation unit, and free | |
13931 | any that are too old. */ | |
13932 | ||
13933 | static void | |
13934 | age_cached_comp_units (void) | |
13935 | { | |
13936 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
13937 | ||
13938 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
13939 | per_cu = dwarf2_per_objfile->read_in_chain; | |
13940 | while (per_cu != NULL) | |
13941 | { | |
13942 | per_cu->cu->last_used ++; | |
13943 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
13944 | dwarf2_mark (per_cu->cu); | |
13945 | per_cu = per_cu->cu->read_in_chain; | |
13946 | } | |
13947 | ||
13948 | per_cu = dwarf2_per_objfile->read_in_chain; | |
13949 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
13950 | while (per_cu != NULL) | |
13951 | { | |
13952 | struct dwarf2_per_cu_data *next_cu; | |
13953 | ||
13954 | next_cu = per_cu->cu->read_in_chain; | |
13955 | ||
13956 | if (!per_cu->cu->mark) | |
13957 | { | |
13958 | free_one_comp_unit (per_cu->cu); | |
13959 | *last_chain = next_cu; | |
13960 | } | |
13961 | else | |
13962 | last_chain = &per_cu->cu->read_in_chain; | |
13963 | ||
13964 | per_cu = next_cu; | |
13965 | } | |
13966 | } | |
13967 | ||
13968 | /* Remove a single compilation unit from the cache. */ | |
13969 | ||
13970 | static void | |
13971 | free_one_cached_comp_unit (void *target_cu) | |
13972 | { | |
13973 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
13974 | ||
13975 | per_cu = dwarf2_per_objfile->read_in_chain; | |
13976 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
13977 | while (per_cu != NULL) | |
13978 | { | |
13979 | struct dwarf2_per_cu_data *next_cu; | |
13980 | ||
13981 | next_cu = per_cu->cu->read_in_chain; | |
13982 | ||
13983 | if (per_cu->cu == target_cu) | |
13984 | { | |
13985 | free_one_comp_unit (per_cu->cu); | |
13986 | *last_chain = next_cu; | |
13987 | break; | |
13988 | } | |
13989 | else | |
13990 | last_chain = &per_cu->cu->read_in_chain; | |
13991 | ||
13992 | per_cu = next_cu; | |
13993 | } | |
13994 | } | |
13995 | ||
fe3e1990 DJ |
13996 | /* Release all extra memory associated with OBJFILE. */ |
13997 | ||
13998 | void | |
13999 | dwarf2_free_objfile (struct objfile *objfile) | |
14000 | { | |
14001 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
14002 | ||
14003 | if (dwarf2_per_objfile == NULL) | |
14004 | return; | |
14005 | ||
14006 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
14007 | free_cached_comp_units (NULL); | |
14008 | ||
9291a0cd TT |
14009 | if (dwarf2_per_objfile->using_index) |
14010 | { | |
14011 | int i; | |
14012 | ||
14013 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
14014 | { | |
14015 | int j; | |
14016 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
14017 | ||
14018 | if (!cu->v.quick->lines) | |
14019 | continue; | |
14020 | ||
14021 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
14022 | { | |
14023 | if (cu->v.quick->file_names) | |
14024 | xfree ((void *) cu->v.quick->file_names[j]); | |
14025 | if (cu->v.quick->full_names) | |
14026 | xfree ((void *) cu->v.quick->full_names[j]); | |
14027 | } | |
14028 | ||
14029 | free_line_header (cu->v.quick->lines); | |
14030 | } | |
14031 | } | |
14032 | ||
fe3e1990 DJ |
14033 | /* Everything else should be on the objfile obstack. */ |
14034 | } | |
14035 | ||
1c379e20 DJ |
14036 | /* A pair of DIE offset and GDB type pointer. We store these |
14037 | in a hash table separate from the DIEs, and preserve them | |
14038 | when the DIEs are flushed out of cache. */ | |
14039 | ||
14040 | struct dwarf2_offset_and_type | |
14041 | { | |
14042 | unsigned int offset; | |
14043 | struct type *type; | |
14044 | }; | |
14045 | ||
14046 | /* Hash function for a dwarf2_offset_and_type. */ | |
14047 | ||
14048 | static hashval_t | |
14049 | offset_and_type_hash (const void *item) | |
14050 | { | |
14051 | const struct dwarf2_offset_and_type *ofs = item; | |
9a619af0 | 14052 | |
1c379e20 DJ |
14053 | return ofs->offset; |
14054 | } | |
14055 | ||
14056 | /* Equality function for a dwarf2_offset_and_type. */ | |
14057 | ||
14058 | static int | |
14059 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
14060 | { | |
14061 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
14062 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 14063 | |
1c379e20 DJ |
14064 | return ofs_lhs->offset == ofs_rhs->offset; |
14065 | } | |
14066 | ||
14067 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
14068 | table if necessary. For convenience, return TYPE. |
14069 | ||
14070 | The DIEs reading must have careful ordering to: | |
14071 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
14072 | reading current DIE. | |
14073 | * Not trying to dereference contents of still incompletely read in types | |
14074 | while reading in other DIEs. | |
14075 | * Enable referencing still incompletely read in types just by a pointer to | |
14076 | the type without accessing its fields. | |
14077 | ||
14078 | Therefore caller should follow these rules: | |
14079 | * Try to fetch any prerequisite types we may need to build this DIE type | |
14080 | before building the type and calling set_die_type. | |
14081 | * After building typer call set_die_type for current DIE as soon as | |
14082 | possible before fetching more types to complete the current type. | |
14083 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 14084 | |
f792889a | 14085 | static struct type * |
1c379e20 DJ |
14086 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
14087 | { | |
14088 | struct dwarf2_offset_and_type **slot, ofs; | |
14089 | ||
b4ba55a1 JB |
14090 | /* For Ada types, make sure that the gnat-specific data is always |
14091 | initialized (if not already set). There are a few types where | |
14092 | we should not be doing so, because the type-specific area is | |
14093 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
14094 | where the type-specific area is used to store the floatformat). | |
14095 | But this is not a problem, because the gnat-specific information | |
14096 | is actually not needed for these types. */ | |
14097 | if (need_gnat_info (cu) | |
14098 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
14099 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
14100 | && !HAVE_GNAT_AUX_INFO (type)) | |
14101 | INIT_GNAT_SPECIFIC (type); | |
14102 | ||
f792889a DJ |
14103 | if (cu->type_hash == NULL) |
14104 | { | |
14105 | gdb_assert (cu->per_cu != NULL); | |
14106 | cu->per_cu->type_hash | |
14107 | = htab_create_alloc_ex (cu->header.length / 24, | |
14108 | offset_and_type_hash, | |
14109 | offset_and_type_eq, | |
14110 | NULL, | |
14111 | &cu->objfile->objfile_obstack, | |
14112 | hashtab_obstack_allocate, | |
14113 | dummy_obstack_deallocate); | |
14114 | cu->type_hash = cu->per_cu->type_hash; | |
14115 | } | |
1c379e20 DJ |
14116 | |
14117 | ofs.offset = die->offset; | |
14118 | ofs.type = type; | |
14119 | slot = (struct dwarf2_offset_and_type **) | |
f792889a | 14120 | htab_find_slot_with_hash (cu->type_hash, &ofs, ofs.offset, INSERT); |
7e314c57 JK |
14121 | if (*slot) |
14122 | complaint (&symfile_complaints, | |
14123 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
14124 | die->offset); | |
1c379e20 DJ |
14125 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); |
14126 | **slot = ofs; | |
f792889a | 14127 | return type; |
1c379e20 DJ |
14128 | } |
14129 | ||
f792889a DJ |
14130 | /* Find the type for DIE in CU's type_hash, or return NULL if DIE does |
14131 | not have a saved type. */ | |
1c379e20 DJ |
14132 | |
14133 | static struct type * | |
f792889a | 14134 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) |
1c379e20 DJ |
14135 | { |
14136 | struct dwarf2_offset_and_type *slot, ofs; | |
f792889a DJ |
14137 | htab_t type_hash = cu->type_hash; |
14138 | ||
14139 | if (type_hash == NULL) | |
14140 | return NULL; | |
1c379e20 DJ |
14141 | |
14142 | ofs.offset = die->offset; | |
14143 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
14144 | if (slot) | |
14145 | return slot->type; | |
14146 | else | |
14147 | return NULL; | |
14148 | } | |
14149 | ||
10b3939b DJ |
14150 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
14151 | ||
14152 | static void | |
14153 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
14154 | struct dwarf2_per_cu_data *ref_per_cu) | |
14155 | { | |
14156 | void **slot; | |
14157 | ||
14158 | if (cu->dependencies == NULL) | |
14159 | cu->dependencies | |
14160 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
14161 | NULL, &cu->comp_unit_obstack, | |
14162 | hashtab_obstack_allocate, | |
14163 | dummy_obstack_deallocate); | |
14164 | ||
14165 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
14166 | if (*slot == NULL) | |
14167 | *slot = ref_per_cu; | |
14168 | } | |
1c379e20 | 14169 | |
f504f079 DE |
14170 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
14171 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
14172 | cache that we must keep because we are keeping CU. */ |
14173 | ||
10b3939b DJ |
14174 | static int |
14175 | dwarf2_mark_helper (void **slot, void *data) | |
14176 | { | |
14177 | struct dwarf2_per_cu_data *per_cu; | |
14178 | ||
14179 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
14180 | if (per_cu->cu->mark) | |
14181 | return 1; | |
14182 | per_cu->cu->mark = 1; | |
14183 | ||
14184 | if (per_cu->cu->dependencies != NULL) | |
14185 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
14186 | ||
14187 | return 1; | |
14188 | } | |
14189 | ||
f504f079 DE |
14190 | /* Set the mark field in CU and in every other compilation unit in the |
14191 | cache that we must keep because we are keeping CU. */ | |
14192 | ||
ae038cb0 DJ |
14193 | static void |
14194 | dwarf2_mark (struct dwarf2_cu *cu) | |
14195 | { | |
14196 | if (cu->mark) | |
14197 | return; | |
14198 | cu->mark = 1; | |
10b3939b DJ |
14199 | if (cu->dependencies != NULL) |
14200 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
14201 | } |
14202 | ||
14203 | static void | |
14204 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
14205 | { | |
14206 | while (per_cu) | |
14207 | { | |
14208 | per_cu->cu->mark = 0; | |
14209 | per_cu = per_cu->cu->read_in_chain; | |
14210 | } | |
72bf9492 DJ |
14211 | } |
14212 | ||
72bf9492 DJ |
14213 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
14214 | is its offset in .debug_info for this objfile. */ | |
14215 | ||
14216 | static hashval_t | |
14217 | partial_die_hash (const void *item) | |
14218 | { | |
14219 | const struct partial_die_info *part_die = item; | |
9a619af0 | 14220 | |
72bf9492 DJ |
14221 | return part_die->offset; |
14222 | } | |
14223 | ||
14224 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
14225 | are equal if they have the same offset. */ | |
14226 | ||
14227 | static int | |
14228 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
14229 | { | |
14230 | const struct partial_die_info *part_die_lhs = item_lhs; | |
14231 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 14232 | |
72bf9492 DJ |
14233 | return part_die_lhs->offset == part_die_rhs->offset; |
14234 | } | |
14235 | ||
ae038cb0 DJ |
14236 | static struct cmd_list_element *set_dwarf2_cmdlist; |
14237 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
14238 | ||
14239 | static void | |
14240 | set_dwarf2_cmd (char *args, int from_tty) | |
14241 | { | |
14242 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
14243 | } | |
14244 | ||
14245 | static void | |
14246 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 14247 | { |
ae038cb0 DJ |
14248 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
14249 | } | |
14250 | ||
dce234bc PP |
14251 | /* If section described by INFO was mmapped, munmap it now. */ |
14252 | ||
14253 | static void | |
14254 | munmap_section_buffer (struct dwarf2_section_info *info) | |
14255 | { | |
14256 | if (info->was_mmapped) | |
14257 | { | |
14258 | #ifdef HAVE_MMAP | |
14259 | intptr_t begin = (intptr_t) info->buffer; | |
14260 | intptr_t map_begin = begin & ~(pagesize - 1); | |
14261 | size_t map_length = info->size + begin - map_begin; | |
9a619af0 | 14262 | |
dce234bc PP |
14263 | gdb_assert (munmap ((void *) map_begin, map_length) == 0); |
14264 | #else | |
14265 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
14266 | gdb_assert (0); | |
14267 | #endif | |
14268 | } | |
14269 | } | |
14270 | ||
14271 | /* munmap debug sections for OBJFILE, if necessary. */ | |
14272 | ||
14273 | static void | |
c1bd65d0 | 14274 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
14275 | { |
14276 | struct dwarf2_per_objfile *data = d; | |
9a619af0 | 14277 | |
dce234bc PP |
14278 | munmap_section_buffer (&data->info); |
14279 | munmap_section_buffer (&data->abbrev); | |
14280 | munmap_section_buffer (&data->line); | |
14281 | munmap_section_buffer (&data->str); | |
14282 | munmap_section_buffer (&data->macinfo); | |
14283 | munmap_section_buffer (&data->ranges); | |
14284 | munmap_section_buffer (&data->loc); | |
14285 | munmap_section_buffer (&data->frame); | |
14286 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd TT |
14287 | munmap_section_buffer (&data->gdb_index); |
14288 | } | |
14289 | ||
14290 | \f | |
14291 | ||
14292 | /* The contents of the hash table we create when building the string | |
14293 | table. */ | |
14294 | struct strtab_entry | |
14295 | { | |
14296 | offset_type offset; | |
14297 | const char *str; | |
14298 | }; | |
14299 | ||
14300 | /* Hash function for a strtab_entry. */ | |
14301 | static hashval_t | |
14302 | hash_strtab_entry (const void *e) | |
14303 | { | |
14304 | const struct strtab_entry *entry = e; | |
14305 | return mapped_index_string_hash (entry->str); | |
14306 | } | |
14307 | ||
14308 | /* Equality function for a strtab_entry. */ | |
14309 | static int | |
14310 | eq_strtab_entry (const void *a, const void *b) | |
14311 | { | |
14312 | const struct strtab_entry *ea = a; | |
14313 | const struct strtab_entry *eb = b; | |
14314 | return !strcmp (ea->str, eb->str); | |
14315 | } | |
14316 | ||
14317 | /* Create a strtab_entry hash table. */ | |
14318 | static htab_t | |
14319 | create_strtab (void) | |
14320 | { | |
14321 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
14322 | xfree, xcalloc, xfree); | |
14323 | } | |
14324 | ||
14325 | /* Add a string to the constant pool. Return the string's offset in | |
14326 | host order. */ | |
14327 | static offset_type | |
14328 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
14329 | { | |
14330 | void **slot; | |
14331 | struct strtab_entry entry; | |
14332 | struct strtab_entry *result; | |
14333 | ||
14334 | entry.str = str; | |
14335 | slot = htab_find_slot (table, &entry, INSERT); | |
14336 | if (*slot) | |
14337 | result = *slot; | |
14338 | else | |
14339 | { | |
14340 | result = XNEW (struct strtab_entry); | |
14341 | result->offset = obstack_object_size (cpool); | |
14342 | result->str = str; | |
14343 | obstack_grow_str0 (cpool, str); | |
14344 | *slot = result; | |
14345 | } | |
14346 | return result->offset; | |
14347 | } | |
14348 | ||
14349 | /* An entry in the symbol table. */ | |
14350 | struct symtab_index_entry | |
14351 | { | |
14352 | /* The name of the symbol. */ | |
14353 | const char *name; | |
14354 | /* The offset of the name in the constant pool. */ | |
14355 | offset_type index_offset; | |
14356 | /* A sorted vector of the indices of all the CUs that hold an object | |
14357 | of this name. */ | |
14358 | VEC (offset_type) *cu_indices; | |
14359 | }; | |
14360 | ||
14361 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
14362 | struct mapped_symtab | |
14363 | { | |
14364 | offset_type n_elements; | |
14365 | offset_type size; | |
14366 | struct symtab_index_entry **data; | |
14367 | }; | |
14368 | ||
14369 | /* Hash function for a symtab_index_entry. */ | |
14370 | static hashval_t | |
14371 | hash_symtab_entry (const void *e) | |
14372 | { | |
14373 | const struct symtab_index_entry *entry = e; | |
14374 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
14375 | sizeof (offset_type) * VEC_length (offset_type, | |
14376 | entry->cu_indices), | |
14377 | 0); | |
14378 | } | |
14379 | ||
14380 | /* Equality function for a symtab_index_entry. */ | |
14381 | static int | |
14382 | eq_symtab_entry (const void *a, const void *b) | |
14383 | { | |
14384 | const struct symtab_index_entry *ea = a; | |
14385 | const struct symtab_index_entry *eb = b; | |
14386 | int len = VEC_length (offset_type, ea->cu_indices); | |
14387 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
14388 | return 0; | |
14389 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
14390 | VEC_address (offset_type, eb->cu_indices), | |
14391 | sizeof (offset_type) * len); | |
14392 | } | |
14393 | ||
14394 | /* Destroy a symtab_index_entry. */ | |
14395 | static void | |
14396 | delete_symtab_entry (void *p) | |
14397 | { | |
14398 | struct symtab_index_entry *entry = p; | |
14399 | VEC_free (offset_type, entry->cu_indices); | |
14400 | xfree (entry); | |
14401 | } | |
14402 | ||
14403 | /* Create a hash table holding symtab_index_entry objects. */ | |
14404 | static htab_t | |
14405 | create_index_table (void) | |
14406 | { | |
14407 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
14408 | delete_symtab_entry, xcalloc, xfree); | |
14409 | } | |
14410 | ||
14411 | /* Create a new mapped symtab object. */ | |
14412 | static struct mapped_symtab * | |
14413 | create_mapped_symtab (void) | |
14414 | { | |
14415 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
14416 | symtab->n_elements = 0; | |
14417 | symtab->size = 1024; | |
14418 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
14419 | return symtab; | |
14420 | } | |
14421 | ||
14422 | /* Destroy a mapped_symtab. */ | |
14423 | static void | |
14424 | cleanup_mapped_symtab (void *p) | |
14425 | { | |
14426 | struct mapped_symtab *symtab = p; | |
14427 | /* The contents of the array are freed when the other hash table is | |
14428 | destroyed. */ | |
14429 | xfree (symtab->data); | |
14430 | xfree (symtab); | |
14431 | } | |
14432 | ||
14433 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
14434 | the slot. */ | |
14435 | static struct symtab_index_entry ** | |
14436 | find_slot (struct mapped_symtab *symtab, const char *name) | |
14437 | { | |
14438 | offset_type index, step, hash = mapped_index_string_hash (name); | |
14439 | ||
14440 | index = hash & (symtab->size - 1); | |
14441 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
14442 | ||
14443 | for (;;) | |
14444 | { | |
14445 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
14446 | return &symtab->data[index]; | |
14447 | index = (index + step) & (symtab->size - 1); | |
14448 | } | |
14449 | } | |
14450 | ||
14451 | /* Expand SYMTAB's hash table. */ | |
14452 | static void | |
14453 | hash_expand (struct mapped_symtab *symtab) | |
14454 | { | |
14455 | offset_type old_size = symtab->size; | |
14456 | offset_type i; | |
14457 | struct symtab_index_entry **old_entries = symtab->data; | |
14458 | ||
14459 | symtab->size *= 2; | |
14460 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
14461 | ||
14462 | for (i = 0; i < old_size; ++i) | |
14463 | { | |
14464 | if (old_entries[i]) | |
14465 | { | |
14466 | struct symtab_index_entry **slot = find_slot (symtab, | |
14467 | old_entries[i]->name); | |
14468 | *slot = old_entries[i]; | |
14469 | } | |
14470 | } | |
14471 | ||
14472 | xfree (old_entries); | |
14473 | } | |
14474 | ||
14475 | /* Add an entry to SYMTAB. NAME is the name of the symbol. CU_INDEX | |
14476 | is the index of the CU in which the symbol appears. */ | |
14477 | static void | |
14478 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
14479 | offset_type cu_index) | |
14480 | { | |
14481 | struct symtab_index_entry **slot; | |
14482 | ||
14483 | ++symtab->n_elements; | |
14484 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
14485 | hash_expand (symtab); | |
14486 | ||
14487 | slot = find_slot (symtab, name); | |
14488 | if (!*slot) | |
14489 | { | |
14490 | *slot = XNEW (struct symtab_index_entry); | |
14491 | (*slot)->name = name; | |
14492 | (*slot)->cu_indices = NULL; | |
14493 | } | |
14494 | /* Don't push an index twice. Due to how we add entries we only | |
14495 | have to check the last one. */ | |
14496 | if (VEC_empty (offset_type, (*slot)->cu_indices) | |
14497 | || VEC_length (offset_type, (*slot)->cu_indices) != cu_index) | |
14498 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index); | |
14499 | } | |
14500 | ||
14501 | /* Add a vector of indices to the constant pool. */ | |
14502 | static offset_type | |
14503 | add_indices_to_cpool (htab_t index_table, struct obstack *cpool, | |
14504 | struct symtab_index_entry *entry) | |
14505 | { | |
14506 | void **slot; | |
14507 | ||
14508 | slot = htab_find_slot (index_table, entry, INSERT); | |
14509 | if (!*slot) | |
14510 | { | |
14511 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
14512 | offset_type val = MAYBE_SWAP (len); | |
14513 | offset_type iter; | |
14514 | int i; | |
14515 | ||
14516 | *slot = entry; | |
14517 | entry->index_offset = obstack_object_size (cpool); | |
14518 | ||
14519 | obstack_grow (cpool, &val, sizeof (val)); | |
14520 | for (i = 0; | |
14521 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
14522 | ++i) | |
14523 | { | |
14524 | val = MAYBE_SWAP (iter); | |
14525 | obstack_grow (cpool, &val, sizeof (val)); | |
14526 | } | |
14527 | } | |
14528 | else | |
14529 | { | |
14530 | struct symtab_index_entry *old_entry = *slot; | |
14531 | entry->index_offset = old_entry->index_offset; | |
14532 | entry = old_entry; | |
14533 | } | |
14534 | return entry->index_offset; | |
14535 | } | |
14536 | ||
14537 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
14538 | constant pool entries going into the obstack CPOOL. */ | |
14539 | static void | |
14540 | write_hash_table (struct mapped_symtab *symtab, | |
14541 | struct obstack *output, struct obstack *cpool) | |
14542 | { | |
14543 | offset_type i; | |
14544 | htab_t index_table; | |
14545 | htab_t str_table; | |
14546 | ||
14547 | index_table = create_index_table (); | |
14548 | str_table = create_strtab (); | |
14549 | /* We add all the index vectors to the constant pool first, to | |
14550 | ensure alignment is ok. */ | |
14551 | for (i = 0; i < symtab->size; ++i) | |
14552 | { | |
14553 | if (symtab->data[i]) | |
14554 | add_indices_to_cpool (index_table, cpool, symtab->data[i]); | |
14555 | } | |
14556 | ||
14557 | /* Now write out the hash table. */ | |
14558 | for (i = 0; i < symtab->size; ++i) | |
14559 | { | |
14560 | offset_type str_off, vec_off; | |
14561 | ||
14562 | if (symtab->data[i]) | |
14563 | { | |
14564 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
14565 | vec_off = symtab->data[i]->index_offset; | |
14566 | } | |
14567 | else | |
14568 | { | |
14569 | /* While 0 is a valid constant pool index, it is not valid | |
14570 | to have 0 for both offsets. */ | |
14571 | str_off = 0; | |
14572 | vec_off = 0; | |
14573 | } | |
14574 | ||
14575 | str_off = MAYBE_SWAP (str_off); | |
14576 | vec_off = MAYBE_SWAP (vec_off); | |
14577 | ||
14578 | obstack_grow (output, &str_off, sizeof (str_off)); | |
14579 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
14580 | } | |
14581 | ||
14582 | htab_delete (str_table); | |
14583 | htab_delete (index_table); | |
14584 | } | |
14585 | ||
14586 | /* Write an address entry to ADDR_OBSTACK. The addresses are taken | |
14587 | from PST; CU_INDEX is the index of the CU in the vector of all | |
14588 | CUs. */ | |
14589 | static void | |
14590 | add_address_entry (struct objfile *objfile, | |
14591 | struct obstack *addr_obstack, struct partial_symtab *pst, | |
14592 | unsigned int cu_index) | |
14593 | { | |
14594 | offset_type offset; | |
14595 | char addr[8]; | |
14596 | CORE_ADDR baseaddr; | |
14597 | ||
1fd400ff TT |
14598 | /* Don't bother recording empty ranges. */ |
14599 | if (pst->textlow == pst->texthigh) | |
14600 | return; | |
14601 | ||
9291a0cd TT |
14602 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
14603 | ||
14604 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, pst->textlow - baseaddr); | |
14605 | obstack_grow (addr_obstack, addr, 8); | |
14606 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, pst->texthigh - baseaddr); | |
14607 | obstack_grow (addr_obstack, addr, 8); | |
14608 | offset = MAYBE_SWAP (cu_index); | |
14609 | obstack_grow (addr_obstack, &offset, sizeof (offset_type)); | |
14610 | } | |
14611 | ||
14612 | /* Add a list of partial symbols to SYMTAB. */ | |
14613 | static void | |
14614 | write_psymbols (struct mapped_symtab *symtab, | |
14615 | struct partial_symbol **psymp, | |
14616 | int count, | |
14617 | offset_type cu_index) | |
14618 | { | |
14619 | for (; count-- > 0; ++psymp) | |
14620 | { | |
14621 | if (SYMBOL_LANGUAGE (*psymp) == language_ada) | |
14622 | error (_("Ada is not currently supported by the index")); | |
14623 | add_index_entry (symtab, SYMBOL_NATURAL_NAME (*psymp), cu_index); | |
14624 | } | |
14625 | } | |
14626 | ||
14627 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
14628 | exception if there is an error. */ | |
14629 | static void | |
14630 | write_obstack (FILE *file, struct obstack *obstack) | |
14631 | { | |
14632 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
14633 | file) | |
14634 | != obstack_object_size (obstack)) | |
14635 | error (_("couldn't data write to file")); | |
14636 | } | |
14637 | ||
14638 | /* Unlink a file if the argument is not NULL. */ | |
14639 | static void | |
14640 | unlink_if_set (void *p) | |
14641 | { | |
14642 | char **filename = p; | |
14643 | if (*filename) | |
14644 | unlink (*filename); | |
14645 | } | |
14646 | ||
1fd400ff TT |
14647 | /* A helper struct used when iterating over debug_types. */ |
14648 | struct signatured_type_index_data | |
14649 | { | |
14650 | struct objfile *objfile; | |
14651 | struct mapped_symtab *symtab; | |
14652 | struct obstack *types_list; | |
14653 | int cu_index; | |
14654 | }; | |
14655 | ||
14656 | /* A helper function that writes a single signatured_type to an | |
14657 | obstack. */ | |
14658 | static int | |
14659 | write_one_signatured_type (void **slot, void *d) | |
14660 | { | |
14661 | struct signatured_type_index_data *info = d; | |
14662 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
14663 | struct dwarf2_per_cu_data *cu = &entry->per_cu; | |
14664 | struct partial_symtab *psymtab = cu->v.psymtab; | |
14665 | gdb_byte val[8]; | |
14666 | ||
14667 | write_psymbols (info->symtab, | |
14668 | info->objfile->global_psymbols.list + psymtab->globals_offset, | |
14669 | psymtab->n_global_syms, info->cu_index); | |
14670 | write_psymbols (info->symtab, | |
14671 | info->objfile->static_psymbols.list + psymtab->statics_offset, | |
14672 | psymtab->n_static_syms, info->cu_index); | |
14673 | ||
14674 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->offset); | |
14675 | obstack_grow (info->types_list, val, 8); | |
14676 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->type_offset); | |
14677 | obstack_grow (info->types_list, val, 8); | |
14678 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, entry->signature); | |
14679 | obstack_grow (info->types_list, val, 8); | |
14680 | ||
14681 | ++info->cu_index; | |
14682 | ||
14683 | return 1; | |
14684 | } | |
14685 | ||
9291a0cd TT |
14686 | /* Create an index file for OBJFILE in the directory DIR. */ |
14687 | static void | |
14688 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
14689 | { | |
14690 | struct cleanup *cleanup; | |
14691 | char *filename, *cleanup_filename; | |
1fd400ff TT |
14692 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack; |
14693 | struct obstack cu_list, types_cu_list; | |
9291a0cd TT |
14694 | int i; |
14695 | FILE *out_file; | |
14696 | struct mapped_symtab *symtab; | |
14697 | offset_type val, size_of_contents, total_len; | |
14698 | struct stat st; | |
14699 | char buf[8]; | |
14700 | ||
14701 | if (!objfile->psymtabs) | |
14702 | return; | |
14703 | if (dwarf2_per_objfile->using_index) | |
14704 | error (_("Cannot use an index to create the index")); | |
14705 | ||
14706 | if (stat (objfile->name, &st) < 0) | |
14707 | perror_with_name (_("Could not stat")); | |
14708 | ||
14709 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
14710 | INDEX_SUFFIX, (char *) NULL); | |
14711 | cleanup = make_cleanup (xfree, filename); | |
14712 | ||
14713 | out_file = fopen (filename, "wb"); | |
14714 | if (!out_file) | |
14715 | error (_("Can't open `%s' for writing"), filename); | |
14716 | ||
14717 | cleanup_filename = filename; | |
14718 | make_cleanup (unlink_if_set, &cleanup_filename); | |
14719 | ||
14720 | symtab = create_mapped_symtab (); | |
14721 | make_cleanup (cleanup_mapped_symtab, symtab); | |
14722 | ||
14723 | obstack_init (&addr_obstack); | |
14724 | make_cleanup_obstack_free (&addr_obstack); | |
14725 | ||
14726 | obstack_init (&cu_list); | |
14727 | make_cleanup_obstack_free (&cu_list); | |
14728 | ||
1fd400ff TT |
14729 | obstack_init (&types_cu_list); |
14730 | make_cleanup_obstack_free (&types_cu_list); | |
14731 | ||
14732 | /* The list is already sorted, so we don't need to do additional | |
14733 | work here. Also, the debug_types entries do not appear in | |
14734 | all_comp_units, but only in their own hash table. */ | |
9291a0cd TT |
14735 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) |
14736 | { | |
14737 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
14738 | struct partial_symtab *psymtab = cu->v.psymtab; | |
14739 | gdb_byte val[8]; | |
14740 | ||
14741 | write_psymbols (symtab, | |
14742 | objfile->global_psymbols.list + psymtab->globals_offset, | |
14743 | psymtab->n_global_syms, i); | |
14744 | write_psymbols (symtab, | |
14745 | objfile->static_psymbols.list + psymtab->statics_offset, | |
14746 | psymtab->n_static_syms, i); | |
14747 | ||
14748 | add_address_entry (objfile, &addr_obstack, psymtab, i); | |
14749 | ||
14750 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, cu->offset); | |
14751 | obstack_grow (&cu_list, val, 8); | |
14752 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, cu->length); | |
14753 | obstack_grow (&cu_list, val, 8); | |
14754 | } | |
14755 | ||
1fd400ff TT |
14756 | /* Write out the .debug_type entries, if any. */ |
14757 | if (dwarf2_per_objfile->signatured_types) | |
14758 | { | |
14759 | struct signatured_type_index_data sig_data; | |
14760 | ||
14761 | sig_data.objfile = objfile; | |
14762 | sig_data.symtab = symtab; | |
14763 | sig_data.types_list = &types_cu_list; | |
14764 | sig_data.cu_index = dwarf2_per_objfile->n_comp_units; | |
14765 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
14766 | write_one_signatured_type, &sig_data); | |
14767 | } | |
14768 | ||
9291a0cd TT |
14769 | obstack_init (&constant_pool); |
14770 | make_cleanup_obstack_free (&constant_pool); | |
14771 | obstack_init (&symtab_obstack); | |
14772 | make_cleanup_obstack_free (&symtab_obstack); | |
14773 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
14774 | ||
14775 | obstack_init (&contents); | |
14776 | make_cleanup_obstack_free (&contents); | |
1fd400ff | 14777 | size_of_contents = 6 * sizeof (offset_type); |
9291a0cd TT |
14778 | total_len = size_of_contents; |
14779 | ||
14780 | /* The version number. */ | |
1fd400ff | 14781 | val = MAYBE_SWAP (2); |
9291a0cd TT |
14782 | obstack_grow (&contents, &val, sizeof (val)); |
14783 | ||
14784 | /* The offset of the CU list from the start of the file. */ | |
14785 | val = MAYBE_SWAP (total_len); | |
14786 | obstack_grow (&contents, &val, sizeof (val)); | |
14787 | total_len += obstack_object_size (&cu_list); | |
14788 | ||
1fd400ff TT |
14789 | /* The offset of the types CU list from the start of the file. */ |
14790 | val = MAYBE_SWAP (total_len); | |
14791 | obstack_grow (&contents, &val, sizeof (val)); | |
14792 | total_len += obstack_object_size (&types_cu_list); | |
14793 | ||
9291a0cd TT |
14794 | /* The offset of the address table from the start of the file. */ |
14795 | val = MAYBE_SWAP (total_len); | |
14796 | obstack_grow (&contents, &val, sizeof (val)); | |
14797 | total_len += obstack_object_size (&addr_obstack); | |
14798 | ||
14799 | /* The offset of the symbol table from the start of the file. */ | |
14800 | val = MAYBE_SWAP (total_len); | |
14801 | obstack_grow (&contents, &val, sizeof (val)); | |
14802 | total_len += obstack_object_size (&symtab_obstack); | |
14803 | ||
14804 | /* The offset of the constant pool from the start of the file. */ | |
14805 | val = MAYBE_SWAP (total_len); | |
14806 | obstack_grow (&contents, &val, sizeof (val)); | |
14807 | total_len += obstack_object_size (&constant_pool); | |
14808 | ||
14809 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
14810 | ||
14811 | write_obstack (out_file, &contents); | |
14812 | write_obstack (out_file, &cu_list); | |
1fd400ff | 14813 | write_obstack (out_file, &types_cu_list); |
9291a0cd TT |
14814 | write_obstack (out_file, &addr_obstack); |
14815 | write_obstack (out_file, &symtab_obstack); | |
14816 | write_obstack (out_file, &constant_pool); | |
14817 | ||
14818 | fclose (out_file); | |
14819 | ||
14820 | /* We want to keep the file, so we set cleanup_filename to NULL | |
14821 | here. See unlink_if_set. */ | |
14822 | cleanup_filename = NULL; | |
14823 | ||
14824 | do_cleanups (cleanup); | |
14825 | } | |
14826 | ||
14827 | /* The mapped index file format is designed to be directly mmap()able | |
14828 | on any architecture. In most cases, a datum is represented using a | |
14829 | little-endian 32-bit integer value, called an offset_type. Big | |
14830 | endian machines must byte-swap the values before using them. | |
14831 | Exceptions to this rule are noted. The data is laid out such that | |
14832 | alignment is always respected. | |
14833 | ||
14834 | A mapped index consists of several sections. | |
14835 | ||
14836 | 1. The file header. This is a sequence of values, of offset_type | |
14837 | unless otherwise noted: | |
1fd400ff TT |
14838 | [0] The version number. Currently 1 or 2. The differences are |
14839 | noted below. Version 1 did not account for .debug_types sections; | |
14840 | the presence of a .debug_types section invalidates any version 1 | |
14841 | index that may exist. | |
9291a0cd | 14842 | [1] The offset, from the start of the file, of the CU list. |
1fd400ff TT |
14843 | [1.5] In version 2, the offset, from the start of the file, of the |
14844 | types CU list. This offset does not appear in version 1. Note | |
14845 | that this can be empty, in which case this offset will be equal to | |
14846 | the next offset. | |
9291a0cd TT |
14847 | [2] The offset, from the start of the file, of the address section. |
14848 | [3] The offset, from the start of the file, of the symbol table. | |
14849 | [4] The offset, from the start of the file, of the constant pool. | |
14850 | ||
14851 | 2. The CU list. This is a sequence of pairs of 64-bit | |
1fd400ff TT |
14852 | little-endian values, sorted by the CU offset. The first element |
14853 | in each pair is the offset of a CU in the .debug_info section. The | |
14854 | second element in each pair is the length of that CU. References | |
14855 | to a CU elsewhere in the map are done using a CU index, which is | |
14856 | just the 0-based index into this table. Note that if there are | |
14857 | type CUs, then conceptually CUs and type CUs form a single list for | |
14858 | the purposes of CU indices. | |
14859 | ||
14860 | 2.5 The types CU list. This does not appear in a version 1 index. | |
14861 | This is a sequence of triplets of 64-bit little-endian values. In | |
14862 | a triplet, the first value is the CU offset, the second value is | |
14863 | the type offset in the CU, and the third value is the type | |
14864 | signature. The types CU list is not sorted. | |
9291a0cd TT |
14865 | |
14866 | 3. The address section. The address section consists of a sequence | |
14867 | of address entries. Each address entry has three elements. | |
14868 | [0] The low address. This is a 64-bit little-endian value. | |
14869 | [1] The high address. This is a 64-bit little-endian value. | |
14870 | [2] The CU index. This is an offset_type value. | |
14871 | ||
14872 | 4. The symbol table. This is a hash table. The size of the hash | |
14873 | table is always a power of 2. The initial hash and the step are | |
14874 | currently defined by the `find_slot' function. | |
14875 | ||
14876 | Each slot in the hash table consists of a pair of offset_type | |
14877 | values. The first value is the offset of the symbol's name in the | |
14878 | constant pool. The second value is the offset of the CU vector in | |
14879 | the constant pool. | |
14880 | ||
14881 | If both values are 0, then this slot in the hash table is empty. | |
14882 | This is ok because while 0 is a valid constant pool index, it | |
14883 | cannot be a valid index for both a string and a CU vector. | |
14884 | ||
14885 | A string in the constant pool is stored as a \0-terminated string, | |
14886 | as you'd expect. | |
14887 | ||
14888 | A CU vector in the constant pool is a sequence of offset_type | |
14889 | values. The first value is the number of CU indices in the vector. | |
14890 | Each subsequent value is the index of a CU in the CU list. This | |
14891 | element in the hash table is used to indicate which CUs define the | |
14892 | symbol. | |
14893 | ||
14894 | 5. The constant pool. This is simply a bunch of bytes. It is | |
14895 | organized so that alignment is correct: CU vectors are stored | |
14896 | first, followed by strings. */ | |
14897 | static void | |
14898 | save_gdb_index_command (char *arg, int from_tty) | |
14899 | { | |
14900 | struct objfile *objfile; | |
14901 | ||
14902 | if (!arg || !*arg) | |
96d19272 | 14903 | error (_("usage: save gdb-index DIRECTORY")); |
9291a0cd TT |
14904 | |
14905 | ALL_OBJFILES (objfile) | |
14906 | { | |
14907 | struct stat st; | |
14908 | ||
14909 | /* If the objfile does not correspond to an actual file, skip it. */ | |
14910 | if (stat (objfile->name, &st) < 0) | |
14911 | continue; | |
14912 | ||
14913 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
14914 | if (dwarf2_per_objfile) | |
14915 | { | |
14916 | volatile struct gdb_exception except; | |
14917 | ||
14918 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
14919 | { | |
14920 | write_psymtabs_to_index (objfile, arg); | |
14921 | } | |
14922 | if (except.reason < 0) | |
14923 | exception_fprintf (gdb_stderr, except, | |
14924 | _("Error while writing index for `%s': "), | |
14925 | objfile->name); | |
14926 | } | |
14927 | } | |
dce234bc PP |
14928 | } |
14929 | ||
9291a0cd TT |
14930 | \f |
14931 | ||
9eae7c52 TT |
14932 | int dwarf2_always_disassemble; |
14933 | ||
14934 | static void | |
14935 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
14936 | struct cmd_list_element *c, const char *value) | |
14937 | { | |
14938 | fprintf_filtered (file, _("\ | |
14939 | Whether to always disassemble DWARF expressions is %s.\n"), | |
14940 | value); | |
14941 | } | |
14942 | ||
6502dd73 DJ |
14943 | void _initialize_dwarf2_read (void); |
14944 | ||
14945 | void | |
14946 | _initialize_dwarf2_read (void) | |
14947 | { | |
96d19272 JK |
14948 | struct cmd_list_element *c; |
14949 | ||
dce234bc | 14950 | dwarf2_objfile_data_key |
c1bd65d0 | 14951 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 14952 | |
1bedd215 AC |
14953 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
14954 | Set DWARF 2 specific variables.\n\ | |
14955 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
14956 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
14957 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
14958 | ||
1bedd215 AC |
14959 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
14960 | Show DWARF 2 specific variables\n\ | |
14961 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
14962 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
14963 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
14964 | ||
14965 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
14966 | &dwarf2_max_cache_age, _("\ |
14967 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
14968 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
14969 | A higher limit means that cached compilation units will be stored\n\ | |
14970 | in memory longer, and more total memory will be used. Zero disables\n\ | |
14971 | caching, which can slow down startup."), | |
2c5b56ce | 14972 | NULL, |
920d2a44 | 14973 | show_dwarf2_max_cache_age, |
2c5b56ce | 14974 | &set_dwarf2_cmdlist, |
ae038cb0 | 14975 | &show_dwarf2_cmdlist); |
d97bc12b | 14976 | |
9eae7c52 TT |
14977 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
14978 | &dwarf2_always_disassemble, _("\ | |
14979 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
14980 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
14981 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
14982 | syntax. When disabled, expressions will be printed in a more\n\ | |
14983 | conversational style, when possible."), | |
14984 | NULL, | |
14985 | show_dwarf2_always_disassemble, | |
14986 | &set_dwarf2_cmdlist, | |
14987 | &show_dwarf2_cmdlist); | |
14988 | ||
d97bc12b DE |
14989 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
14990 | Set debugging of the dwarf2 DIE reader."), _("\ | |
14991 | Show debugging of the dwarf2 DIE reader."), _("\ | |
14992 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
14993 | The value is the maximum depth to print."), | |
14994 | NULL, | |
14995 | NULL, | |
14996 | &setdebuglist, &showdebuglist); | |
9291a0cd | 14997 | |
96d19272 JK |
14998 | c = add_cmd ("gdb-index", class_files, save_gdb_index_command, |
14999 | _("Save a .gdb-index file"), | |
15000 | &save_cmdlist); | |
15001 | set_cmd_completer (c, filename_completer); | |
6502dd73 | 15002 | } |