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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" |
4c2df51b | 54 | |
c906108c SS |
55 | #include <fcntl.h> |
56 | #include "gdb_string.h" | |
4bdf3d34 | 57 | #include "gdb_assert.h" |
c906108c | 58 | #include <sys/types.h> |
233a11ab CS |
59 | #ifdef HAVE_ZLIB_H |
60 | #include <zlib.h> | |
61 | #endif | |
dce234bc PP |
62 | #ifdef HAVE_MMAP |
63 | #include <sys/mman.h> | |
85d9bd0e TT |
64 | #ifndef MAP_FAILED |
65 | #define MAP_FAILED ((void *) -1) | |
66 | #endif | |
dce234bc | 67 | #endif |
d8151005 | 68 | |
107d2387 | 69 | #if 0 |
357e46e7 | 70 | /* .debug_info header for a compilation unit |
c906108c SS |
71 | Because of alignment constraints, this structure has padding and cannot |
72 | be mapped directly onto the beginning of the .debug_info section. */ | |
73 | typedef struct comp_unit_header | |
74 | { | |
75 | unsigned int length; /* length of the .debug_info | |
76 | contribution */ | |
77 | unsigned short version; /* version number -- 2 for DWARF | |
78 | version 2 */ | |
79 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
80 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
81 | } | |
82 | _COMP_UNIT_HEADER; | |
83 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 84 | #endif |
c906108c SS |
85 | |
86 | /* .debug_pubnames header | |
87 | Because of alignment constraints, this structure has padding and cannot | |
88 | be mapped directly onto the beginning of the .debug_info section. */ | |
89 | typedef struct pubnames_header | |
90 | { | |
91 | unsigned int length; /* length of the .debug_pubnames | |
92 | contribution */ | |
93 | unsigned char version; /* version number -- 2 for DWARF | |
94 | version 2 */ | |
95 | unsigned int info_offset; /* offset into .debug_info section */ | |
96 | unsigned int info_size; /* byte size of .debug_info section | |
97 | portion */ | |
98 | } | |
99 | _PUBNAMES_HEADER; | |
100 | #define _ACTUAL_PUBNAMES_HEADER_SIZE 13 | |
101 | ||
102 | /* .debug_pubnames header | |
103 | Because of alignment constraints, this structure has padding and cannot | |
104 | be mapped directly onto the beginning of the .debug_info section. */ | |
105 | typedef struct aranges_header | |
106 | { | |
107 | unsigned int length; /* byte len of the .debug_aranges | |
108 | contribution */ | |
109 | unsigned short version; /* version number -- 2 for DWARF | |
110 | version 2 */ | |
111 | unsigned int info_offset; /* offset into .debug_info section */ | |
112 | unsigned char addr_size; /* byte size of an address */ | |
113 | unsigned char seg_size; /* byte size of segment descriptor */ | |
114 | } | |
115 | _ARANGES_HEADER; | |
116 | #define _ACTUAL_ARANGES_HEADER_SIZE 12 | |
117 | ||
118 | /* .debug_line statement program prologue | |
119 | Because of alignment constraints, this structure has padding and cannot | |
120 | be mapped directly onto the beginning of the .debug_info section. */ | |
121 | typedef struct statement_prologue | |
122 | { | |
123 | unsigned int total_length; /* byte length of the statement | |
124 | information */ | |
125 | unsigned short version; /* version number -- 2 for DWARF | |
126 | version 2 */ | |
127 | unsigned int prologue_length; /* # bytes between prologue & | |
128 | stmt program */ | |
129 | unsigned char minimum_instruction_length; /* byte size of | |
130 | smallest instr */ | |
131 | unsigned char default_is_stmt; /* initial value of is_stmt | |
132 | register */ | |
133 | char line_base; | |
134 | unsigned char line_range; | |
135 | unsigned char opcode_base; /* number assigned to first special | |
136 | opcode */ | |
137 | unsigned char *standard_opcode_lengths; | |
138 | } | |
139 | _STATEMENT_PROLOGUE; | |
140 | ||
d97bc12b DE |
141 | /* When non-zero, dump DIEs after they are read in. */ |
142 | static int dwarf2_die_debug = 0; | |
143 | ||
dce234bc PP |
144 | static int pagesize; |
145 | ||
df8a16a1 DJ |
146 | /* When set, the file that we're processing is known to have debugging |
147 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
148 | but later versions do. */ | |
149 | ||
150 | static int processing_has_namespace_info; | |
151 | ||
6502dd73 DJ |
152 | static const struct objfile_data *dwarf2_objfile_data_key; |
153 | ||
dce234bc PP |
154 | struct dwarf2_section_info |
155 | { | |
156 | asection *asection; | |
157 | gdb_byte *buffer; | |
158 | bfd_size_type size; | |
159 | int was_mmapped; | |
be391dca TT |
160 | /* True if we have tried to read this section. */ |
161 | int readin; | |
dce234bc PP |
162 | }; |
163 | ||
6502dd73 DJ |
164 | struct dwarf2_per_objfile |
165 | { | |
dce234bc PP |
166 | struct dwarf2_section_info info; |
167 | struct dwarf2_section_info abbrev; | |
168 | struct dwarf2_section_info line; | |
169 | struct dwarf2_section_info pubnames; | |
170 | struct dwarf2_section_info aranges; | |
171 | struct dwarf2_section_info loc; | |
172 | struct dwarf2_section_info macinfo; | |
173 | struct dwarf2_section_info str; | |
174 | struct dwarf2_section_info ranges; | |
348e048f | 175 | struct dwarf2_section_info types; |
dce234bc PP |
176 | struct dwarf2_section_info frame; |
177 | struct dwarf2_section_info eh_frame; | |
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 | ||
189 | /* A chain of compilation units that are currently read in, so that | |
190 | they can be freed later. */ | |
191 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 192 | |
348e048f DE |
193 | /* A table mapping .debug_types signatures to its signatured_type entry. |
194 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
195 | htab_t signatured_types; | |
196 | ||
72dca2f5 FR |
197 | /* A flag indicating wether this objfile has a section loaded at a |
198 | VMA of 0. */ | |
199 | int has_section_at_zero; | |
6502dd73 DJ |
200 | }; |
201 | ||
202 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c SS |
203 | |
204 | /* names of the debugging sections */ | |
205 | ||
233a11ab CS |
206 | /* Note that if the debugging section has been compressed, it might |
207 | have a name like .zdebug_info. */ | |
208 | ||
209 | #define INFO_SECTION "debug_info" | |
210 | #define ABBREV_SECTION "debug_abbrev" | |
211 | #define LINE_SECTION "debug_line" | |
212 | #define PUBNAMES_SECTION "debug_pubnames" | |
213 | #define ARANGES_SECTION "debug_aranges" | |
214 | #define LOC_SECTION "debug_loc" | |
215 | #define MACINFO_SECTION "debug_macinfo" | |
216 | #define STR_SECTION "debug_str" | |
217 | #define RANGES_SECTION "debug_ranges" | |
348e048f | 218 | #define TYPES_SECTION "debug_types" |
233a11ab CS |
219 | #define FRAME_SECTION "debug_frame" |
220 | #define EH_FRAME_SECTION "eh_frame" | |
c906108c SS |
221 | |
222 | /* local data types */ | |
223 | ||
57349743 JB |
224 | /* We hold several abbreviation tables in memory at the same time. */ |
225 | #ifndef ABBREV_HASH_SIZE | |
226 | #define ABBREV_HASH_SIZE 121 | |
227 | #endif | |
228 | ||
107d2387 AC |
229 | /* The data in a compilation unit header, after target2host |
230 | translation, looks like this. */ | |
c906108c | 231 | struct comp_unit_head |
a738430d | 232 | { |
c764a876 | 233 | unsigned int length; |
a738430d | 234 | short version; |
a738430d MK |
235 | unsigned char addr_size; |
236 | unsigned char signed_addr_p; | |
9cbfa09e | 237 | unsigned int abbrev_offset; |
57349743 | 238 | |
a738430d MK |
239 | /* Size of file offsets; either 4 or 8. */ |
240 | unsigned int offset_size; | |
57349743 | 241 | |
a738430d MK |
242 | /* Size of the length field; either 4 or 12. */ |
243 | unsigned int initial_length_size; | |
57349743 | 244 | |
a738430d MK |
245 | /* Offset to the first byte of this compilation unit header in the |
246 | .debug_info section, for resolving relative reference dies. */ | |
247 | unsigned int offset; | |
57349743 | 248 | |
d00adf39 DE |
249 | /* Offset to first die in this cu from the start of the cu. |
250 | This will be the first byte following the compilation unit header. */ | |
251 | unsigned int first_die_offset; | |
a738430d | 252 | }; |
c906108c | 253 | |
e7c27a73 DJ |
254 | /* Internal state when decoding a particular compilation unit. */ |
255 | struct dwarf2_cu | |
256 | { | |
257 | /* The objfile containing this compilation unit. */ | |
258 | struct objfile *objfile; | |
259 | ||
d00adf39 | 260 | /* The header of the compilation unit. */ |
e7c27a73 | 261 | struct comp_unit_head header; |
e142c38c | 262 | |
d00adf39 DE |
263 | /* Base address of this compilation unit. */ |
264 | CORE_ADDR base_address; | |
265 | ||
266 | /* Non-zero if base_address has been set. */ | |
267 | int base_known; | |
268 | ||
e142c38c DJ |
269 | struct function_range *first_fn, *last_fn, *cached_fn; |
270 | ||
271 | /* The language we are debugging. */ | |
272 | enum language language; | |
273 | const struct language_defn *language_defn; | |
274 | ||
b0f35d58 DL |
275 | const char *producer; |
276 | ||
e142c38c DJ |
277 | /* The generic symbol table building routines have separate lists for |
278 | file scope symbols and all all other scopes (local scopes). So | |
279 | we need to select the right one to pass to add_symbol_to_list(). | |
280 | We do it by keeping a pointer to the correct list in list_in_scope. | |
281 | ||
282 | FIXME: The original dwarf code just treated the file scope as the | |
283 | first local scope, and all other local scopes as nested local | |
284 | scopes, and worked fine. Check to see if we really need to | |
285 | distinguish these in buildsym.c. */ | |
286 | struct pending **list_in_scope; | |
287 | ||
f3dd6933 DJ |
288 | /* DWARF abbreviation table associated with this compilation unit. */ |
289 | struct abbrev_info **dwarf2_abbrevs; | |
290 | ||
291 | /* Storage for the abbrev table. */ | |
292 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
293 | |
294 | /* Hash table holding all the loaded partial DIEs. */ | |
295 | htab_t partial_dies; | |
296 | ||
297 | /* Storage for things with the same lifetime as this read-in compilation | |
298 | unit, including partial DIEs. */ | |
299 | struct obstack comp_unit_obstack; | |
300 | ||
ae038cb0 DJ |
301 | /* When multiple dwarf2_cu structures are living in memory, this field |
302 | chains them all together, so that they can be released efficiently. | |
303 | We will probably also want a generation counter so that most-recently-used | |
304 | compilation units are cached... */ | |
305 | struct dwarf2_per_cu_data *read_in_chain; | |
306 | ||
307 | /* Backchain to our per_cu entry if the tree has been built. */ | |
308 | struct dwarf2_per_cu_data *per_cu; | |
309 | ||
f792889a DJ |
310 | /* Pointer to the die -> type map. Although it is stored |
311 | permanently in per_cu, we copy it here to avoid double | |
312 | indirection. */ | |
313 | htab_t type_hash; | |
314 | ||
ae038cb0 DJ |
315 | /* How many compilation units ago was this CU last referenced? */ |
316 | int last_used; | |
317 | ||
10b3939b | 318 | /* A hash table of die offsets for following references. */ |
51545339 | 319 | htab_t die_hash; |
10b3939b DJ |
320 | |
321 | /* Full DIEs if read in. */ | |
322 | struct die_info *dies; | |
323 | ||
324 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
325 | units referenced by this one. Only set during full symbol processing; | |
326 | partial symbol tables do not have dependencies. */ | |
327 | htab_t dependencies; | |
328 | ||
cb1df416 DJ |
329 | /* Header data from the line table, during full symbol processing. */ |
330 | struct line_header *line_header; | |
331 | ||
ae038cb0 DJ |
332 | /* Mark used when releasing cached dies. */ |
333 | unsigned int mark : 1; | |
334 | ||
335 | /* This flag will be set if this compilation unit might include | |
336 | inter-compilation-unit references. */ | |
337 | unsigned int has_form_ref_addr : 1; | |
338 | ||
72bf9492 DJ |
339 | /* This flag will be set if this compilation unit includes any |
340 | DW_TAG_namespace DIEs. If we know that there are explicit | |
341 | DIEs for namespaces, we don't need to try to infer them | |
342 | from mangled names. */ | |
343 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
344 | }; |
345 | ||
10b3939b DJ |
346 | /* Persistent data held for a compilation unit, even when not |
347 | processing it. We put a pointer to this structure in the | |
348 | read_symtab_private field of the psymtab. If we encounter | |
349 | inter-compilation-unit references, we also maintain a sorted | |
350 | list of all compilation units. */ | |
351 | ||
ae038cb0 DJ |
352 | struct dwarf2_per_cu_data |
353 | { | |
348e048f | 354 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 355 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
356 | - if it doesn't, GDB will fall over anyway. |
357 | NOTE: Unlike comp_unit_head.length, this length includes | |
358 | initial_length_size. */ | |
c764a876 | 359 | unsigned int offset; |
348e048f | 360 | unsigned int length : 29; |
ae038cb0 DJ |
361 | |
362 | /* Flag indicating this compilation unit will be read in before | |
363 | any of the current compilation units are processed. */ | |
c764a876 | 364 | unsigned int queued : 1; |
ae038cb0 | 365 | |
5afb4e99 DJ |
366 | /* This flag will be set if we need to load absolutely all DIEs |
367 | for this compilation unit, instead of just the ones we think | |
368 | are interesting. It gets set if we look for a DIE in the | |
369 | hash table and don't find it. */ | |
370 | unsigned int load_all_dies : 1; | |
371 | ||
348e048f DE |
372 | /* Non-zero if this CU is from .debug_types. |
373 | Otherwise it's from .debug_info. */ | |
374 | unsigned int from_debug_types : 1; | |
375 | ||
ae038cb0 DJ |
376 | /* Set iff currently read in. */ |
377 | struct dwarf2_cu *cu; | |
1c379e20 DJ |
378 | |
379 | /* If full symbols for this CU have been read in, then this field | |
380 | holds a map of DIE offsets to types. It isn't always possible | |
381 | to reconstruct this information later, so we have to preserve | |
382 | it. */ | |
1c379e20 | 383 | htab_t type_hash; |
10b3939b | 384 | |
31ffec48 DJ |
385 | /* The partial symbol table associated with this compilation unit, |
386 | or NULL for partial units (which do not have an associated | |
387 | symtab). */ | |
10b3939b | 388 | struct partial_symtab *psymtab; |
ae038cb0 DJ |
389 | }; |
390 | ||
348e048f DE |
391 | /* Entry in the signatured_types hash table. */ |
392 | ||
393 | struct signatured_type | |
394 | { | |
395 | ULONGEST signature; | |
396 | ||
397 | /* Offset in .debug_types of the TU (type_unit) for this type. */ | |
398 | unsigned int offset; | |
399 | ||
400 | /* Offset in .debug_types of the type defined by this TU. */ | |
401 | unsigned int type_offset; | |
402 | ||
403 | /* The CU(/TU) of this type. */ | |
404 | struct dwarf2_per_cu_data per_cu; | |
405 | }; | |
406 | ||
93311388 DE |
407 | /* Struct used to pass misc. parameters to read_die_and_children, et. al. |
408 | which are used for both .debug_info and .debug_types dies. | |
409 | All parameters here are unchanging for the life of the call. | |
410 | This struct exists to abstract away the constant parameters of | |
411 | die reading. */ | |
412 | ||
413 | struct die_reader_specs | |
414 | { | |
415 | /* The bfd of this objfile. */ | |
416 | bfd* abfd; | |
417 | ||
418 | /* The CU of the DIE we are parsing. */ | |
419 | struct dwarf2_cu *cu; | |
420 | ||
421 | /* Pointer to start of section buffer. | |
422 | This is either the start of .debug_info or .debug_types. */ | |
423 | const gdb_byte *buffer; | |
424 | }; | |
425 | ||
debd256d JB |
426 | /* The line number information for a compilation unit (found in the |
427 | .debug_line section) begins with a "statement program header", | |
428 | which contains the following information. */ | |
429 | struct line_header | |
430 | { | |
431 | unsigned int total_length; | |
432 | unsigned short version; | |
433 | unsigned int header_length; | |
434 | unsigned char minimum_instruction_length; | |
435 | unsigned char default_is_stmt; | |
436 | int line_base; | |
437 | unsigned char line_range; | |
438 | unsigned char opcode_base; | |
439 | ||
440 | /* standard_opcode_lengths[i] is the number of operands for the | |
441 | standard opcode whose value is i. This means that | |
442 | standard_opcode_lengths[0] is unused, and the last meaningful | |
443 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
444 | unsigned char *standard_opcode_lengths; | |
445 | ||
446 | /* The include_directories table. NOTE! These strings are not | |
447 | allocated with xmalloc; instead, they are pointers into | |
448 | debug_line_buffer. If you try to free them, `free' will get | |
449 | indigestion. */ | |
450 | unsigned int num_include_dirs, include_dirs_size; | |
451 | char **include_dirs; | |
452 | ||
453 | /* The file_names table. NOTE! These strings are not allocated | |
454 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
455 | Don't try to free them directly. */ | |
456 | unsigned int num_file_names, file_names_size; | |
457 | struct file_entry | |
c906108c | 458 | { |
debd256d JB |
459 | char *name; |
460 | unsigned int dir_index; | |
461 | unsigned int mod_time; | |
462 | unsigned int length; | |
aaa75496 | 463 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 464 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
465 | } *file_names; |
466 | ||
467 | /* The start and end of the statement program following this | |
6502dd73 | 468 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 469 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 470 | }; |
c906108c SS |
471 | |
472 | /* When we construct a partial symbol table entry we only | |
473 | need this much information. */ | |
474 | struct partial_die_info | |
475 | { | |
72bf9492 | 476 | /* Offset of this DIE. */ |
c906108c | 477 | unsigned int offset; |
72bf9492 DJ |
478 | |
479 | /* DWARF-2 tag for this DIE. */ | |
480 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
481 | ||
72bf9492 DJ |
482 | /* Assorted flags describing the data found in this DIE. */ |
483 | unsigned int has_children : 1; | |
484 | unsigned int is_external : 1; | |
485 | unsigned int is_declaration : 1; | |
486 | unsigned int has_type : 1; | |
487 | unsigned int has_specification : 1; | |
488 | unsigned int has_pc_info : 1; | |
489 | ||
490 | /* Flag set if the SCOPE field of this structure has been | |
491 | computed. */ | |
492 | unsigned int scope_set : 1; | |
493 | ||
fa4028e9 JB |
494 | /* Flag set if the DIE has a byte_size attribute. */ |
495 | unsigned int has_byte_size : 1; | |
496 | ||
72bf9492 | 497 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 498 | sometimes a default name for unnamed DIEs. */ |
c906108c | 499 | char *name; |
72bf9492 DJ |
500 | |
501 | /* The scope to prepend to our children. This is generally | |
502 | allocated on the comp_unit_obstack, so will disappear | |
503 | when this compilation unit leaves the cache. */ | |
504 | char *scope; | |
505 | ||
506 | /* The location description associated with this DIE, if any. */ | |
507 | struct dwarf_block *locdesc; | |
508 | ||
509 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
510 | CORE_ADDR lowpc; |
511 | CORE_ADDR highpc; | |
72bf9492 | 512 | |
93311388 | 513 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 514 | DW_AT_sibling, if any. */ |
fe1b8b76 | 515 | gdb_byte *sibling; |
72bf9492 DJ |
516 | |
517 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
518 | DW_AT_specification (or DW_AT_abstract_origin or | |
519 | DW_AT_extension). */ | |
520 | unsigned int spec_offset; | |
521 | ||
522 | /* Pointers to this DIE's parent, first child, and next sibling, | |
523 | if any. */ | |
524 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
525 | }; |
526 | ||
527 | /* This data structure holds the information of an abbrev. */ | |
528 | struct abbrev_info | |
529 | { | |
530 | unsigned int number; /* number identifying abbrev */ | |
531 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
532 | unsigned short has_children; /* boolean */ |
533 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
534 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
535 | struct abbrev_info *next; /* next in chain */ | |
536 | }; | |
537 | ||
538 | struct attr_abbrev | |
539 | { | |
9d25dd43 DE |
540 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
541 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
542 | }; |
543 | ||
b60c80d6 DJ |
544 | /* Attributes have a name and a value */ |
545 | struct attribute | |
546 | { | |
9d25dd43 | 547 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
548 | ENUM_BITFIELD(dwarf_form) form : 15; |
549 | ||
550 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
551 | field should be in u.str (existing only for DW_STRING) but it is kept | |
552 | here for better struct attribute alignment. */ | |
553 | unsigned int string_is_canonical : 1; | |
554 | ||
b60c80d6 DJ |
555 | union |
556 | { | |
557 | char *str; | |
558 | struct dwarf_block *blk; | |
43bbcdc2 PH |
559 | ULONGEST unsnd; |
560 | LONGEST snd; | |
b60c80d6 | 561 | CORE_ADDR addr; |
348e048f | 562 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
563 | } |
564 | u; | |
565 | }; | |
566 | ||
c906108c SS |
567 | /* This data structure holds a complete die structure. */ |
568 | struct die_info | |
569 | { | |
76815b17 DE |
570 | /* DWARF-2 tag for this DIE. */ |
571 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
572 | ||
573 | /* Number of attributes */ | |
574 | unsigned short num_attrs; | |
575 | ||
576 | /* Abbrev number */ | |
577 | unsigned int abbrev; | |
578 | ||
93311388 | 579 | /* Offset in .debug_info or .debug_types section. */ |
76815b17 | 580 | unsigned int offset; |
78ba4af6 JB |
581 | |
582 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
583 | points to this die's parent; CHILD points to the first child of | |
584 | this node; and all the children of a given node are chained | |
585 | together via their SIBLING fields, terminated by a die whose | |
586 | tag is zero. */ | |
639d11d3 DC |
587 | struct die_info *child; /* Its first child, if any. */ |
588 | struct die_info *sibling; /* Its next sibling, if any. */ | |
589 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 590 | |
b60c80d6 DJ |
591 | /* An array of attributes, with NUM_ATTRS elements. There may be |
592 | zero, but it's not common and zero-sized arrays are not | |
593 | sufficiently portable C. */ | |
594 | struct attribute attrs[1]; | |
c906108c SS |
595 | }; |
596 | ||
5fb290d7 DJ |
597 | struct function_range |
598 | { | |
599 | const char *name; | |
600 | CORE_ADDR lowpc, highpc; | |
601 | int seen_line; | |
602 | struct function_range *next; | |
603 | }; | |
604 | ||
c906108c SS |
605 | /* Get at parts of an attribute structure */ |
606 | ||
607 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 608 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
609 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
610 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
611 | #define DW_SND(attr) ((attr)->u.snd) | |
612 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 613 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c SS |
614 | |
615 | /* Blocks are a bunch of untyped bytes. */ | |
616 | struct dwarf_block | |
617 | { | |
618 | unsigned int size; | |
fe1b8b76 | 619 | gdb_byte *data; |
c906108c SS |
620 | }; |
621 | ||
c906108c SS |
622 | #ifndef ATTR_ALLOC_CHUNK |
623 | #define ATTR_ALLOC_CHUNK 4 | |
624 | #endif | |
625 | ||
c906108c SS |
626 | /* Allocate fields for structs, unions and enums in this size. */ |
627 | #ifndef DW_FIELD_ALLOC_CHUNK | |
628 | #define DW_FIELD_ALLOC_CHUNK 4 | |
629 | #endif | |
630 | ||
c906108c SS |
631 | /* A zeroed version of a partial die for initialization purposes. */ |
632 | static struct partial_die_info zeroed_partial_die; | |
633 | ||
c906108c SS |
634 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
635 | but this would require a corresponding change in unpack_field_as_long | |
636 | and friends. */ | |
637 | static int bits_per_byte = 8; | |
638 | ||
639 | /* The routines that read and process dies for a C struct or C++ class | |
640 | pass lists of data member fields and lists of member function fields | |
641 | in an instance of a field_info structure, as defined below. */ | |
642 | struct field_info | |
c5aa993b JM |
643 | { |
644 | /* List of data member and baseclasses fields. */ | |
645 | struct nextfield | |
646 | { | |
647 | struct nextfield *next; | |
648 | int accessibility; | |
649 | int virtuality; | |
650 | struct field field; | |
651 | } | |
7d0ccb61 | 652 | *fields, *baseclasses; |
c906108c | 653 | |
7d0ccb61 | 654 | /* Number of fields (including baseclasses). */ |
c5aa993b | 655 | int nfields; |
c906108c | 656 | |
c5aa993b JM |
657 | /* Number of baseclasses. */ |
658 | int nbaseclasses; | |
c906108c | 659 | |
c5aa993b JM |
660 | /* Set if the accesibility of one of the fields is not public. */ |
661 | int non_public_fields; | |
c906108c | 662 | |
c5aa993b JM |
663 | /* Member function fields array, entries are allocated in the order they |
664 | are encountered in the object file. */ | |
665 | struct nextfnfield | |
666 | { | |
667 | struct nextfnfield *next; | |
668 | struct fn_field fnfield; | |
669 | } | |
670 | *fnfields; | |
c906108c | 671 | |
c5aa993b JM |
672 | /* Member function fieldlist array, contains name of possibly overloaded |
673 | member function, number of overloaded member functions and a pointer | |
674 | to the head of the member function field chain. */ | |
675 | struct fnfieldlist | |
676 | { | |
677 | char *name; | |
678 | int length; | |
679 | struct nextfnfield *head; | |
680 | } | |
681 | *fnfieldlists; | |
c906108c | 682 | |
c5aa993b JM |
683 | /* Number of entries in the fnfieldlists array. */ |
684 | int nfnfields; | |
685 | }; | |
c906108c | 686 | |
10b3939b DJ |
687 | /* One item on the queue of compilation units to read in full symbols |
688 | for. */ | |
689 | struct dwarf2_queue_item | |
690 | { | |
691 | struct dwarf2_per_cu_data *per_cu; | |
692 | struct dwarf2_queue_item *next; | |
693 | }; | |
694 | ||
695 | /* The current queue. */ | |
696 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
697 | ||
ae038cb0 DJ |
698 | /* Loaded secondary compilation units are kept in memory until they |
699 | have not been referenced for the processing of this many | |
700 | compilation units. Set this to zero to disable caching. Cache | |
701 | sizes of up to at least twenty will improve startup time for | |
702 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
703 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
704 | static void |
705 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
706 | struct cmd_list_element *c, const char *value) | |
707 | { | |
708 | fprintf_filtered (file, _("\ | |
709 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
710 | value); | |
711 | } | |
712 | ||
ae038cb0 | 713 | |
c906108c SS |
714 | /* Various complaints about symbol reading that don't abort the process */ |
715 | ||
4d3c2250 KB |
716 | static void |
717 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 718 | { |
4d3c2250 | 719 | complaint (&symfile_complaints, |
e2e0b3e5 | 720 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
721 | } |
722 | ||
25e43795 DJ |
723 | static void |
724 | dwarf2_debug_line_missing_file_complaint (void) | |
725 | { | |
726 | complaint (&symfile_complaints, | |
727 | _(".debug_line section has line data without a file")); | |
728 | } | |
729 | ||
59205f5a JB |
730 | static void |
731 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
732 | { | |
733 | complaint (&symfile_complaints, | |
734 | _(".debug_line section has line program sequence without an end")); | |
735 | } | |
736 | ||
4d3c2250 KB |
737 | static void |
738 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 739 | { |
e2e0b3e5 | 740 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
741 | } |
742 | ||
4d3c2250 KB |
743 | static void |
744 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
745 | int arg3) | |
2e276125 | 746 | { |
4d3c2250 | 747 | complaint (&symfile_complaints, |
e2e0b3e5 | 748 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
749 | arg2, arg3); |
750 | } | |
751 | ||
752 | static void | |
753 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 754 | { |
4d3c2250 | 755 | complaint (&symfile_complaints, |
e2e0b3e5 | 756 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
757 | } |
758 | ||
759 | static void | |
760 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 761 | { |
4d3c2250 | 762 | complaint (&symfile_complaints, |
e2e0b3e5 | 763 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
764 | arg1); |
765 | } | |
766 | ||
767 | static void | |
768 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 769 | { |
4d3c2250 | 770 | complaint (&symfile_complaints, |
e2e0b3e5 | 771 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 772 | } |
c906108c | 773 | |
c906108c SS |
774 | /* local function prototypes */ |
775 | ||
4efb68b1 | 776 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
777 | |
778 | #if 0 | |
c67a9c90 | 779 | static void dwarf2_build_psymtabs_easy (struct objfile *); |
c906108c SS |
780 | #endif |
781 | ||
aaa75496 JB |
782 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
783 | struct objfile *); | |
784 | ||
785 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
d85a05f0 | 786 | struct die_info *, |
aaa75496 JB |
787 | struct partial_symtab *); |
788 | ||
c67a9c90 | 789 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 790 | |
72bf9492 DJ |
791 | static void scan_partial_symbols (struct partial_die_info *, |
792 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 793 | int, struct dwarf2_cu *); |
c906108c | 794 | |
72bf9492 DJ |
795 | static void add_partial_symbol (struct partial_die_info *, |
796 | struct dwarf2_cu *); | |
63d06c5c | 797 | |
72bf9492 DJ |
798 | static void add_partial_namespace (struct partial_die_info *pdi, |
799 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 800 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 801 | |
5d7cb8df JK |
802 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
803 | CORE_ADDR *highpc, int need_pc, | |
804 | struct dwarf2_cu *cu); | |
805 | ||
72bf9492 DJ |
806 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
807 | struct dwarf2_cu *cu); | |
91c24f0a | 808 | |
bc30ff58 JB |
809 | static void add_partial_subprogram (struct partial_die_info *pdi, |
810 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 811 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 812 | |
fe1b8b76 | 813 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
93311388 DE |
814 | gdb_byte *buffer, gdb_byte *info_ptr, |
815 | bfd *abfd, struct dwarf2_cu *cu); | |
91c24f0a | 816 | |
a14ed312 | 817 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 818 | |
a14ed312 | 819 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 820 | |
e7c27a73 | 821 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 822 | |
f3dd6933 | 823 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 824 | |
fe1b8b76 | 825 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 826 | struct dwarf2_cu *); |
72bf9492 | 827 | |
57349743 | 828 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 829 | struct dwarf2_cu *); |
c906108c | 830 | |
93311388 DE |
831 | static struct partial_die_info *load_partial_dies (bfd *, |
832 | gdb_byte *, gdb_byte *, | |
833 | int, struct dwarf2_cu *); | |
72bf9492 | 834 | |
fe1b8b76 | 835 | static gdb_byte *read_partial_die (struct partial_die_info *, |
93311388 DE |
836 | struct abbrev_info *abbrev, |
837 | unsigned int, bfd *, | |
838 | gdb_byte *, gdb_byte *, | |
839 | struct dwarf2_cu *); | |
c906108c | 840 | |
c764a876 | 841 | static struct partial_die_info *find_partial_die (unsigned int, |
10b3939b | 842 | struct dwarf2_cu *); |
72bf9492 DJ |
843 | |
844 | static void fixup_partial_die (struct partial_die_info *, | |
845 | struct dwarf2_cu *); | |
846 | ||
fe1b8b76 JB |
847 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
848 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 849 | |
fe1b8b76 JB |
850 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
851 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 852 | |
fe1b8b76 | 853 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 854 | |
fe1b8b76 | 855 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 856 | |
fe1b8b76 | 857 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 858 | |
fe1b8b76 | 859 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 860 | |
93311388 | 861 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 862 | |
fe1b8b76 | 863 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 864 | unsigned int *); |
c906108c | 865 | |
c764a876 DE |
866 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
867 | ||
868 | static LONGEST read_checked_initial_length_and_offset | |
869 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
870 | unsigned int *, unsigned int *); | |
613e1657 | 871 | |
fe1b8b76 | 872 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
873 | unsigned int *); |
874 | ||
875 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 876 | |
fe1b8b76 | 877 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 878 | |
fe1b8b76 | 879 | static char *read_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 880 | |
fe1b8b76 JB |
881 | static char *read_indirect_string (bfd *, gdb_byte *, |
882 | const struct comp_unit_head *, | |
883 | unsigned int *); | |
4bdf3d34 | 884 | |
fe1b8b76 | 885 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 886 | |
fe1b8b76 | 887 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 888 | |
fe1b8b76 | 889 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 890 | |
e142c38c | 891 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 892 | |
e142c38c DJ |
893 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
894 | struct dwarf2_cu *); | |
c906108c | 895 | |
348e048f DE |
896 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
897 | unsigned int, | |
898 | struct dwarf2_cu *); | |
899 | ||
05cf31d1 JB |
900 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
901 | struct dwarf2_cu *cu); | |
902 | ||
e142c38c | 903 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 904 | |
e142c38c | 905 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 906 | struct dwarf2_cu **); |
63d06c5c | 907 | |
debd256d JB |
908 | static void free_line_header (struct line_header *lh); |
909 | ||
aaa75496 JB |
910 | static void add_file_name (struct line_header *, char *, unsigned int, |
911 | unsigned int, unsigned int); | |
912 | ||
debd256d JB |
913 | static struct line_header *(dwarf_decode_line_header |
914 | (unsigned int offset, | |
e7c27a73 | 915 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
916 | |
917 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 918 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 919 | |
4f1520fb | 920 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 921 | |
a14ed312 | 922 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 923 | struct dwarf2_cu *); |
c906108c | 924 | |
a14ed312 | 925 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 926 | struct dwarf2_cu *); |
c906108c | 927 | |
2df3850c JM |
928 | static void dwarf2_const_value_data (struct attribute *attr, |
929 | struct symbol *sym, | |
930 | int bits); | |
931 | ||
e7c27a73 | 932 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 933 | |
b4ba55a1 JB |
934 | static int need_gnat_info (struct dwarf2_cu *); |
935 | ||
936 | static struct type *die_descriptive_type (struct die_info *, struct dwarf2_cu *); | |
937 | ||
938 | static void set_descriptive_type (struct type *, struct die_info *, | |
939 | struct dwarf2_cu *); | |
940 | ||
e7c27a73 DJ |
941 | static struct type *die_containing_type (struct die_info *, |
942 | struct dwarf2_cu *); | |
c906108c | 943 | |
e7c27a73 | 944 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 945 | |
f792889a | 946 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 947 | |
086ed43d | 948 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 949 | |
fe1b8b76 JB |
950 | static char *typename_concat (struct obstack *, |
951 | const char *prefix, | |
952 | const char *suffix, | |
987504bb | 953 | struct dwarf2_cu *); |
63d06c5c | 954 | |
e7c27a73 | 955 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 956 | |
348e048f DE |
957 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
958 | ||
e7c27a73 | 959 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 960 | |
e7c27a73 | 961 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 962 | |
ff013f42 JK |
963 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
964 | struct dwarf2_cu *, struct partial_symtab *); | |
965 | ||
a14ed312 | 966 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
967 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
968 | struct partial_symtab *); | |
c906108c | 969 | |
fae299cd DC |
970 | static void get_scope_pc_bounds (struct die_info *, |
971 | CORE_ADDR *, CORE_ADDR *, | |
972 | struct dwarf2_cu *); | |
973 | ||
801e3a5b JB |
974 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
975 | CORE_ADDR, struct dwarf2_cu *); | |
976 | ||
a14ed312 | 977 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 978 | struct dwarf2_cu *); |
c906108c | 979 | |
a14ed312 | 980 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 981 | struct type *, struct dwarf2_cu *); |
c906108c | 982 | |
a14ed312 | 983 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 984 | struct die_info *, struct type *, |
e7c27a73 | 985 | struct dwarf2_cu *); |
c906108c | 986 | |
a14ed312 | 987 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 988 | struct type *, struct dwarf2_cu *); |
c906108c | 989 | |
134d01f1 | 990 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 991 | |
e7c27a73 | 992 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 993 | |
e7c27a73 | 994 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 995 | |
5d7cb8df JK |
996 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
997 | ||
27aa8d6a SW |
998 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
999 | ||
38d518c9 | 1000 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1001 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1002 | |
134d01f1 | 1003 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1004 | |
e7c27a73 | 1005 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1006 | |
7ca2d3a3 DL |
1007 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
1008 | struct dwarf2_cu *); | |
1009 | ||
93311388 | 1010 | static struct die_info *read_comp_unit (gdb_byte *, struct dwarf2_cu *); |
c906108c | 1011 | |
93311388 DE |
1012 | static struct die_info *read_die_and_children_1 (const struct die_reader_specs *reader, |
1013 | gdb_byte *info_ptr, | |
d97bc12b DE |
1014 | gdb_byte **new_info_ptr, |
1015 | struct die_info *parent); | |
1016 | ||
93311388 DE |
1017 | static struct die_info *read_die_and_children (const struct die_reader_specs *reader, |
1018 | gdb_byte *info_ptr, | |
fe1b8b76 | 1019 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1020 | struct die_info *parent); |
1021 | ||
93311388 DE |
1022 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *reader, |
1023 | gdb_byte *info_ptr, | |
fe1b8b76 | 1024 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1025 | struct die_info *parent); |
1026 | ||
93311388 DE |
1027 | static gdb_byte *read_full_die (const struct die_reader_specs *reader, |
1028 | struct die_info **, gdb_byte *, | |
1029 | int *); | |
1030 | ||
e7c27a73 | 1031 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1032 | |
71c25dea TT |
1033 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1034 | struct obstack *); | |
1035 | ||
e142c38c | 1036 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1037 | |
e142c38c | 1038 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1039 | struct dwarf2_cu **); |
9219021c | 1040 | |
a14ed312 | 1041 | static char *dwarf_tag_name (unsigned int); |
c906108c | 1042 | |
a14ed312 | 1043 | static char *dwarf_attr_name (unsigned int); |
c906108c | 1044 | |
a14ed312 | 1045 | static char *dwarf_form_name (unsigned int); |
c906108c | 1046 | |
a14ed312 | 1047 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 1048 | |
a14ed312 | 1049 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1050 | |
a14ed312 | 1051 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
1052 | |
1053 | #if 0 | |
a14ed312 | 1054 | static char *dwarf_cfi_name (unsigned int); |
c906108c SS |
1055 | #endif |
1056 | ||
f9aca02d | 1057 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1058 | |
d97bc12b DE |
1059 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1060 | ||
1061 | static void dump_die_for_error (struct die_info *); | |
1062 | ||
1063 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1064 | struct die_info *); | |
c906108c | 1065 | |
d97bc12b | 1066 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1067 | |
51545339 | 1068 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1069 | struct dwarf2_cu *); |
c906108c | 1070 | |
93311388 DE |
1071 | static int is_ref_attr (struct attribute *); |
1072 | ||
c764a876 | 1073 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1074 | |
43bbcdc2 | 1075 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1076 | |
348e048f DE |
1077 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1078 | struct attribute *, | |
1079 | struct dwarf2_cu **); | |
1080 | ||
10b3939b DJ |
1081 | static struct die_info *follow_die_ref (struct die_info *, |
1082 | struct attribute *, | |
f2f0e013 | 1083 | struct dwarf2_cu **); |
c906108c | 1084 | |
348e048f DE |
1085 | static struct die_info *follow_die_sig (struct die_info *, |
1086 | struct attribute *, | |
1087 | struct dwarf2_cu **); | |
1088 | ||
1089 | static void read_signatured_type_at_offset (struct objfile *objfile, | |
1090 | unsigned int offset); | |
1091 | ||
1092 | static void read_signatured_type (struct objfile *, | |
1093 | struct signatured_type *type_sig); | |
1094 | ||
c906108c SS |
1095 | /* memory allocation interface */ |
1096 | ||
7b5a2f43 | 1097 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1098 | |
f3dd6933 | 1099 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1100 | |
b60c80d6 | 1101 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1102 | |
e142c38c | 1103 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1104 | |
e142c38c DJ |
1105 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1106 | struct dwarf2_cu *); | |
5fb290d7 | 1107 | |
2e276125 | 1108 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1109 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1110 | |
8e19ed76 PS |
1111 | static int attr_form_is_block (struct attribute *); |
1112 | ||
3690dd37 JB |
1113 | static int attr_form_is_section_offset (struct attribute *); |
1114 | ||
1115 | static int attr_form_is_constant (struct attribute *); | |
1116 | ||
93e7bd98 DJ |
1117 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1118 | struct symbol *sym, | |
1119 | struct dwarf2_cu *cu); | |
4c2df51b | 1120 | |
93311388 DE |
1121 | static gdb_byte *skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
1122 | struct abbrev_info *abbrev, | |
1123 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1124 | |
72bf9492 DJ |
1125 | static void free_stack_comp_unit (void *); |
1126 | ||
72bf9492 DJ |
1127 | static hashval_t partial_die_hash (const void *item); |
1128 | ||
1129 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1130 | ||
ae038cb0 | 1131 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
c764a876 | 1132 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 DJ |
1133 | |
1134 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
c764a876 | 1135 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 | 1136 | |
93311388 DE |
1137 | static struct dwarf2_cu *alloc_one_comp_unit (struct objfile *objfile); |
1138 | ||
ae038cb0 DJ |
1139 | static void free_one_comp_unit (void *); |
1140 | ||
1141 | static void free_cached_comp_units (void *); | |
1142 | ||
1143 | static void age_cached_comp_units (void); | |
1144 | ||
1145 | static void free_one_cached_comp_unit (void *); | |
1146 | ||
f792889a DJ |
1147 | static struct type *set_die_type (struct die_info *, struct type *, |
1148 | struct dwarf2_cu *); | |
1c379e20 | 1149 | |
ae038cb0 DJ |
1150 | static void create_all_comp_units (struct objfile *); |
1151 | ||
93311388 DE |
1152 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1153 | struct objfile *); | |
10b3939b DJ |
1154 | |
1155 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1156 | ||
1157 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1158 | struct dwarf2_per_cu_data *); | |
1159 | ||
ae038cb0 DJ |
1160 | static void dwarf2_mark (struct dwarf2_cu *); |
1161 | ||
1162 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1163 | ||
f792889a | 1164 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1165 | |
c906108c SS |
1166 | /* Try to locate the sections we need for DWARF 2 debugging |
1167 | information and return true if we have enough to do something. */ | |
1168 | ||
1169 | int | |
6502dd73 | 1170 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1171 | { |
be391dca TT |
1172 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1173 | if (!dwarf2_per_objfile) | |
1174 | { | |
1175 | /* Initialize per-objfile state. */ | |
1176 | struct dwarf2_per_objfile *data | |
1177 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
1178 | memset (data, 0, sizeof (*data)); | |
1179 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1180 | dwarf2_per_objfile = data; | |
6502dd73 | 1181 | |
be391dca TT |
1182 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
1183 | dwarf2_per_objfile->objfile = objfile; | |
1184 | } | |
1185 | return (dwarf2_per_objfile->info.asection != NULL | |
1186 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1187 | } |
1188 | ||
233a11ab CS |
1189 | /* When loading sections, we can either look for ".<name>", or for |
1190 | * ".z<name>", which indicates a compressed section. */ | |
1191 | ||
1192 | static int | |
dce234bc | 1193 | section_is_p (const char *section_name, const char *name) |
233a11ab | 1194 | { |
dce234bc PP |
1195 | return (section_name[0] == '.' |
1196 | && (strcmp (section_name + 1, name) == 0 | |
1197 | || (section_name[1] == 'z' | |
1198 | && strcmp (section_name + 2, name) == 0))); | |
233a11ab CS |
1199 | } |
1200 | ||
c906108c SS |
1201 | /* This function is mapped across the sections and remembers the |
1202 | offset and size of each of the debugging sections we are interested | |
1203 | in. */ | |
1204 | ||
1205 | static void | |
72dca2f5 | 1206 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1207 | { |
dce234bc | 1208 | if (section_is_p (sectp->name, INFO_SECTION)) |
c906108c | 1209 | { |
dce234bc PP |
1210 | dwarf2_per_objfile->info.asection = sectp; |
1211 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1212 | } |
dce234bc | 1213 | else if (section_is_p (sectp->name, ABBREV_SECTION)) |
c906108c | 1214 | { |
dce234bc PP |
1215 | dwarf2_per_objfile->abbrev.asection = sectp; |
1216 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1217 | } |
dce234bc | 1218 | else if (section_is_p (sectp->name, LINE_SECTION)) |
c906108c | 1219 | { |
dce234bc PP |
1220 | dwarf2_per_objfile->line.asection = sectp; |
1221 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1222 | } |
dce234bc | 1223 | else if (section_is_p (sectp->name, PUBNAMES_SECTION)) |
c906108c | 1224 | { |
dce234bc PP |
1225 | dwarf2_per_objfile->pubnames.asection = sectp; |
1226 | dwarf2_per_objfile->pubnames.size = bfd_get_section_size (sectp); | |
c906108c | 1227 | } |
dce234bc | 1228 | else if (section_is_p (sectp->name, ARANGES_SECTION)) |
c906108c | 1229 | { |
dce234bc PP |
1230 | dwarf2_per_objfile->aranges.asection = sectp; |
1231 | dwarf2_per_objfile->aranges.size = bfd_get_section_size (sectp); | |
c906108c | 1232 | } |
dce234bc | 1233 | else if (section_is_p (sectp->name, LOC_SECTION)) |
c906108c | 1234 | { |
dce234bc PP |
1235 | dwarf2_per_objfile->loc.asection = sectp; |
1236 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1237 | } |
dce234bc | 1238 | else if (section_is_p (sectp->name, MACINFO_SECTION)) |
c906108c | 1239 | { |
dce234bc PP |
1240 | dwarf2_per_objfile->macinfo.asection = sectp; |
1241 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1242 | } |
dce234bc | 1243 | else if (section_is_p (sectp->name, STR_SECTION)) |
c906108c | 1244 | { |
dce234bc PP |
1245 | dwarf2_per_objfile->str.asection = sectp; |
1246 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1247 | } |
dce234bc | 1248 | else if (section_is_p (sectp->name, FRAME_SECTION)) |
b6af0555 | 1249 | { |
dce234bc PP |
1250 | dwarf2_per_objfile->frame.asection = sectp; |
1251 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1252 | } |
dce234bc | 1253 | else if (section_is_p (sectp->name, EH_FRAME_SECTION)) |
b6af0555 | 1254 | { |
3799ccc6 EZ |
1255 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1256 | if (aflag & SEC_HAS_CONTENTS) | |
1257 | { | |
dce234bc PP |
1258 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1259 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1260 | } |
b6af0555 | 1261 | } |
dce234bc | 1262 | else if (section_is_p (sectp->name, RANGES_SECTION)) |
af34e669 | 1263 | { |
dce234bc PP |
1264 | dwarf2_per_objfile->ranges.asection = sectp; |
1265 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1266 | } |
348e048f DE |
1267 | else if (section_is_p (sectp->name, TYPES_SECTION)) |
1268 | { | |
1269 | dwarf2_per_objfile->types.asection = sectp; | |
1270 | dwarf2_per_objfile->types.size = bfd_get_section_size (sectp); | |
1271 | } | |
dce234bc | 1272 | |
72dca2f5 FR |
1273 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1274 | && bfd_section_vma (abfd, sectp) == 0) | |
1275 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1276 | } |
1277 | ||
dce234bc PP |
1278 | /* Decompress a section that was compressed using zlib. Store the |
1279 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1280 | |
1281 | static void | |
dce234bc PP |
1282 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1283 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1284 | { | |
1285 | bfd *abfd = objfile->obfd; | |
1286 | #ifndef HAVE_ZLIB_H | |
1287 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1288 | "is disabled in this copy of GDB"), | |
1289 | bfd_get_filename (abfd)); | |
1290 | #else | |
1291 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1292 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1293 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1294 | bfd_size_type uncompressed_size; |
1295 | gdb_byte *uncompressed_buffer; | |
1296 | z_stream strm; | |
1297 | int rc; | |
1298 | int header_size = 12; | |
1299 | ||
1300 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1301 | || bfd_bread (compressed_buffer, compressed_size, abfd) != compressed_size) | |
1302 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1303 | bfd_get_filename (abfd)); | |
1304 | ||
1305 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1306 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1307 | if (compressed_size < header_size | |
1308 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1309 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1310 | bfd_get_filename (abfd)); | |
1311 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1312 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1313 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1314 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1315 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1316 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1317 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1318 | uncompressed_size += compressed_buffer[11]; | |
1319 | ||
1320 | /* It is possible the section consists of several compressed | |
1321 | buffers concatenated together, so we uncompress in a loop. */ | |
1322 | strm.zalloc = NULL; | |
1323 | strm.zfree = NULL; | |
1324 | strm.opaque = NULL; | |
1325 | strm.avail_in = compressed_size - header_size; | |
1326 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1327 | strm.avail_out = uncompressed_size; | |
1328 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1329 | uncompressed_size); | |
1330 | rc = inflateInit (&strm); | |
1331 | while (strm.avail_in > 0) | |
1332 | { | |
1333 | if (rc != Z_OK) | |
1334 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1335 | bfd_get_filename (abfd), rc); | |
1336 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1337 | + (uncompressed_size - strm.avail_out)); | |
1338 | rc = inflate (&strm, Z_FINISH); | |
1339 | if (rc != Z_STREAM_END) | |
1340 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1341 | bfd_get_filename (abfd), rc); | |
1342 | rc = inflateReset (&strm); | |
1343 | } | |
1344 | rc = inflateEnd (&strm); | |
1345 | if (rc != Z_OK | |
1346 | || strm.avail_out != 0) | |
1347 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1348 | bfd_get_filename (abfd), rc); | |
1349 | ||
affddf13 | 1350 | do_cleanups (cleanup); |
dce234bc PP |
1351 | *outbuf = uncompressed_buffer; |
1352 | *outsize = uncompressed_size; | |
1353 | #endif | |
233a11ab CS |
1354 | } |
1355 | ||
dce234bc PP |
1356 | /* Read the contents of the section SECTP from object file specified by |
1357 | OBJFILE, store info about the section into INFO. | |
1358 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 1359 | |
dce234bc PP |
1360 | static void |
1361 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1362 | { |
dce234bc PP |
1363 | bfd *abfd = objfile->obfd; |
1364 | asection *sectp = info->asection; | |
1365 | gdb_byte *buf, *retbuf; | |
1366 | unsigned char header[4]; | |
c906108c | 1367 | |
be391dca TT |
1368 | if (info->readin) |
1369 | return; | |
dce234bc PP |
1370 | info->buffer = NULL; |
1371 | info->was_mmapped = 0; | |
be391dca | 1372 | info->readin = 1; |
188dd5d6 | 1373 | |
dce234bc PP |
1374 | if (info->asection == NULL || info->size == 0) |
1375 | return; | |
c906108c | 1376 | |
dce234bc PP |
1377 | /* Check if the file has a 4-byte header indicating compression. */ |
1378 | if (info->size > sizeof (header) | |
1379 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1380 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1381 | { | |
1382 | /* Upon decompression, update the buffer and its size. */ | |
1383 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1384 | { | |
1385 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1386 | &info->size); | |
1387 | return; | |
1388 | } | |
1389 | } | |
4bdf3d34 | 1390 | |
dce234bc PP |
1391 | #ifdef HAVE_MMAP |
1392 | if (pagesize == 0) | |
1393 | pagesize = getpagesize (); | |
2e276125 | 1394 | |
dce234bc PP |
1395 | /* Only try to mmap sections which are large enough: we don't want to |
1396 | waste space due to fragmentation. Also, only try mmap for sections | |
1397 | without relocations. */ | |
1398 | ||
1399 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1400 | { | |
1401 | off_t pg_offset = sectp->filepos & ~(pagesize - 1); | |
1402 | size_t map_length = info->size + sectp->filepos - pg_offset; | |
1403 | caddr_t retbuf = bfd_mmap (abfd, 0, map_length, PROT_READ, | |
1404 | MAP_PRIVATE, pg_offset); | |
1405 | ||
1406 | if (retbuf != MAP_FAILED) | |
1407 | { | |
1408 | info->was_mmapped = 1; | |
1409 | info->buffer = retbuf + (sectp->filepos & (pagesize - 1)) ; | |
be391dca TT |
1410 | #if HAVE_POSIX_MADVISE |
1411 | posix_madvise (retbuf, map_length, POSIX_MADV_WILLNEED); | |
1412 | #endif | |
dce234bc PP |
1413 | return; |
1414 | } | |
1415 | } | |
1416 | #endif | |
1417 | ||
1418 | /* If we get here, we are a normal, not-compressed section. */ | |
1419 | info->buffer = buf | |
1420 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1421 | ||
1422 | /* When debugging .o files, we may need to apply relocations; see | |
1423 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1424 | We never compress sections in .o files, so we only need to | |
1425 | try this when the section is not compressed. */ | |
ac8035ab | 1426 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1427 | if (retbuf != NULL) |
1428 | { | |
1429 | info->buffer = retbuf; | |
1430 | return; | |
1431 | } | |
1432 | ||
1433 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1434 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1435 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1436 | bfd_get_filename (abfd)); | |
1437 | } | |
1438 | ||
1439 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and | |
1440 | SECTION_NAME. */ | |
af34e669 | 1441 | |
dce234bc PP |
1442 | void |
1443 | dwarf2_get_section_info (struct objfile *objfile, const char *section_name, | |
1444 | asection **sectp, gdb_byte **bufp, | |
1445 | bfd_size_type *sizep) | |
1446 | { | |
1447 | struct dwarf2_per_objfile *data | |
1448 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1449 | struct dwarf2_section_info *info; | |
1450 | if (section_is_p (section_name, EH_FRAME_SECTION)) | |
1451 | info = &data->eh_frame; | |
1452 | else if (section_is_p (section_name, FRAME_SECTION)) | |
1453 | info = &data->frame; | |
0d53c4c4 | 1454 | else |
dce234bc PP |
1455 | gdb_assert (0); |
1456 | ||
1457 | if (info->asection != NULL && info->size != 0 && info->buffer == NULL) | |
1458 | /* We haven't read this section in yet. Do it now. */ | |
1459 | dwarf2_read_section (objfile, info); | |
1460 | ||
1461 | *sectp = info->asection; | |
1462 | *bufp = info->buffer; | |
1463 | *sizep = info->size; | |
1464 | } | |
1465 | ||
1466 | /* Build a partial symbol table. */ | |
1467 | ||
1468 | void | |
f29dff0a | 1469 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 1470 | { |
f29dff0a | 1471 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
1472 | { |
1473 | init_psymbol_list (objfile, 1024); | |
1474 | } | |
1475 | ||
1476 | #if 0 | |
1477 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1478 | { | |
d4f3574e | 1479 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1480 | .debug_pubnames sections */ |
1481 | ||
c67a9c90 | 1482 | dwarf2_build_psymtabs_easy (objfile); |
c906108c SS |
1483 | } |
1484 | else | |
1485 | #endif | |
1486 | /* only test this case for now */ | |
c5aa993b | 1487 | { |
c906108c | 1488 | /* In this case we have to work a bit harder */ |
c67a9c90 | 1489 | dwarf2_build_psymtabs_hard (objfile); |
c906108c SS |
1490 | } |
1491 | } | |
1492 | ||
1493 | #if 0 | |
1494 | /* Build the partial symbol table from the information in the | |
1495 | .debug_pubnames and .debug_aranges sections. */ | |
1496 | ||
1497 | static void | |
c67a9c90 | 1498 | dwarf2_build_psymtabs_easy (struct objfile *objfile) |
c906108c SS |
1499 | { |
1500 | bfd *abfd = objfile->obfd; | |
1501 | char *aranges_buffer, *pubnames_buffer; | |
1502 | char *aranges_ptr, *pubnames_ptr; | |
1503 | unsigned int entry_length, version, info_offset, info_size; | |
1504 | ||
1505 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1506 | dwarf_pubnames_section); |
c906108c | 1507 | pubnames_ptr = pubnames_buffer; |
dce234bc | 1508 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames.size) |
c906108c | 1509 | { |
891d2f0b | 1510 | unsigned int bytes_read; |
613e1657 | 1511 | |
c764a876 | 1512 | entry_length = read_initial_length (abfd, pubnames_ptr, &bytes_read); |
613e1657 | 1513 | pubnames_ptr += bytes_read; |
c906108c SS |
1514 | version = read_1_byte (abfd, pubnames_ptr); |
1515 | pubnames_ptr += 1; | |
1516 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1517 | pubnames_ptr += 4; | |
1518 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1519 | pubnames_ptr += 4; | |
1520 | } | |
1521 | ||
1522 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1523 | dwarf_aranges_section); |
c906108c SS |
1524 | |
1525 | } | |
1526 | #endif | |
1527 | ||
45452591 DE |
1528 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
1529 | ||
1530 | static inline int | |
1531 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
1532 | { | |
1533 | unsigned int bottom = cu_header->offset; | |
1534 | unsigned int top = (cu_header->offset | |
1535 | + cu_header->length | |
1536 | + cu_header->initial_length_size); | |
1537 | return (offset >= bottom && offset < top); | |
1538 | } | |
1539 | ||
93311388 DE |
1540 | /* Read in the comp unit header information from the debug_info at info_ptr. |
1541 | NOTE: This leaves members offset, first_die_offset to be filled in | |
1542 | by the caller. */ | |
107d2387 | 1543 | |
fe1b8b76 | 1544 | static gdb_byte * |
107d2387 | 1545 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 1546 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
1547 | { |
1548 | int signed_addr; | |
891d2f0b | 1549 | unsigned int bytes_read; |
c764a876 DE |
1550 | |
1551 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
1552 | cu_header->initial_length_size = bytes_read; | |
1553 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 1554 | info_ptr += bytes_read; |
107d2387 AC |
1555 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1556 | info_ptr += 2; | |
613e1657 | 1557 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
c764a876 | 1558 | &bytes_read); |
613e1657 | 1559 | info_ptr += bytes_read; |
107d2387 AC |
1560 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1561 | info_ptr += 1; | |
1562 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1563 | if (signed_addr < 0) | |
8e65ff28 | 1564 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1565 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 1566 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 1567 | |
107d2387 AC |
1568 | return info_ptr; |
1569 | } | |
1570 | ||
fe1b8b76 JB |
1571 | static gdb_byte * |
1572 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
93311388 | 1573 | gdb_byte *buffer, unsigned int buffer_size, |
72bf9492 DJ |
1574 | bfd *abfd) |
1575 | { | |
fe1b8b76 | 1576 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
1577 | |
1578 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1579 | ||
2b949cb6 | 1580 | if (header->version != 2 && header->version != 3) |
8a3fe4f8 AC |
1581 | error (_("Dwarf Error: wrong version in compilation unit header " |
1582 | "(is %d, should be %d) [in module %s]"), header->version, | |
72bf9492 DJ |
1583 | 2, bfd_get_filename (abfd)); |
1584 | ||
dce234bc | 1585 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev.size) |
8a3fe4f8 AC |
1586 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
1587 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 | 1588 | (long) header->abbrev_offset, |
93311388 | 1589 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
1590 | bfd_get_filename (abfd)); |
1591 | ||
1592 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
93311388 | 1593 | > buffer + buffer_size) |
8a3fe4f8 AC |
1594 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
1595 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 | 1596 | (long) header->length, |
93311388 | 1597 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
1598 | bfd_get_filename (abfd)); |
1599 | ||
1600 | return info_ptr; | |
1601 | } | |
1602 | ||
348e048f DE |
1603 | /* Read in the types comp unit header information from .debug_types entry at |
1604 | types_ptr. The result is a pointer to one past the end of the header. */ | |
1605 | ||
1606 | static gdb_byte * | |
1607 | read_type_comp_unit_head (struct comp_unit_head *cu_header, | |
1608 | ULONGEST *signature, | |
1609 | gdb_byte *types_ptr, bfd *abfd) | |
1610 | { | |
1611 | unsigned int bytes_read; | |
1612 | gdb_byte *initial_types_ptr = types_ptr; | |
1613 | ||
be391dca | 1614 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->types); |
348e048f DE |
1615 | cu_header->offset = types_ptr - dwarf2_per_objfile->types.buffer; |
1616 | ||
1617 | types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd); | |
1618 | ||
1619 | *signature = read_8_bytes (abfd, types_ptr); | |
1620 | types_ptr += 8; | |
1621 | types_ptr += cu_header->offset_size; | |
1622 | cu_header->first_die_offset = types_ptr - initial_types_ptr; | |
1623 | ||
1624 | return types_ptr; | |
1625 | } | |
1626 | ||
aaa75496 JB |
1627 | /* Allocate a new partial symtab for file named NAME and mark this new |
1628 | partial symtab as being an include of PST. */ | |
1629 | ||
1630 | static void | |
1631 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1632 | struct objfile *objfile) | |
1633 | { | |
1634 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1635 | ||
1636 | subpst->section_offsets = pst->section_offsets; | |
1637 | subpst->textlow = 0; | |
1638 | subpst->texthigh = 0; | |
1639 | ||
1640 | subpst->dependencies = (struct partial_symtab **) | |
1641 | obstack_alloc (&objfile->objfile_obstack, | |
1642 | sizeof (struct partial_symtab *)); | |
1643 | subpst->dependencies[0] = pst; | |
1644 | subpst->number_of_dependencies = 1; | |
1645 | ||
1646 | subpst->globals_offset = 0; | |
1647 | subpst->n_global_syms = 0; | |
1648 | subpst->statics_offset = 0; | |
1649 | subpst->n_static_syms = 0; | |
1650 | subpst->symtab = NULL; | |
1651 | subpst->read_symtab = pst->read_symtab; | |
1652 | subpst->readin = 0; | |
1653 | ||
1654 | /* No private part is necessary for include psymtabs. This property | |
1655 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1656 | the regular ones. */ |
58a9656e | 1657 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1658 | } |
1659 | ||
1660 | /* Read the Line Number Program data and extract the list of files | |
1661 | included by the source file represented by PST. Build an include | |
d85a05f0 | 1662 | partial symtab for each of these included files. */ |
aaa75496 JB |
1663 | |
1664 | static void | |
1665 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
d85a05f0 | 1666 | struct die_info *die, |
aaa75496 JB |
1667 | struct partial_symtab *pst) |
1668 | { | |
1669 | struct objfile *objfile = cu->objfile; | |
1670 | bfd *abfd = objfile->obfd; | |
d85a05f0 DJ |
1671 | struct line_header *lh = NULL; |
1672 | struct attribute *attr; | |
aaa75496 | 1673 | |
d85a05f0 DJ |
1674 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
1675 | if (attr) | |
1676 | { | |
1677 | unsigned int line_offset = DW_UNSND (attr); | |
1678 | lh = dwarf_decode_line_header (line_offset, abfd, cu); | |
1679 | } | |
aaa75496 JB |
1680 | if (lh == NULL) |
1681 | return; /* No linetable, so no includes. */ | |
1682 | ||
1683 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1684 | ||
1685 | free_line_header (lh); | |
1686 | } | |
1687 | ||
348e048f DE |
1688 | static hashval_t |
1689 | hash_type_signature (const void *item) | |
1690 | { | |
1691 | const struct signatured_type *type_sig = item; | |
1692 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ | |
1693 | return type_sig->signature; | |
1694 | } | |
1695 | ||
1696 | static int | |
1697 | eq_type_signature (const void *item_lhs, const void *item_rhs) | |
1698 | { | |
1699 | const struct signatured_type *lhs = item_lhs; | |
1700 | const struct signatured_type *rhs = item_rhs; | |
1701 | return lhs->signature == rhs->signature; | |
1702 | } | |
1703 | ||
1704 | /* Create the hash table of all entries in the .debug_types section. | |
1705 | The result is zero if there is an error (e.g. missing .debug_types section), | |
1706 | otherwise non-zero. */ | |
1707 | ||
1708 | static int | |
1709 | create_debug_types_hash_table (struct objfile *objfile) | |
1710 | { | |
be391dca | 1711 | gdb_byte *info_ptr; |
348e048f DE |
1712 | htab_t types_htab; |
1713 | ||
be391dca TT |
1714 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
1715 | info_ptr = dwarf2_per_objfile->types.buffer; | |
1716 | ||
348e048f DE |
1717 | if (info_ptr == NULL) |
1718 | { | |
1719 | dwarf2_per_objfile->signatured_types = NULL; | |
1720 | return 0; | |
1721 | } | |
1722 | ||
1723 | types_htab = htab_create_alloc_ex (41, | |
1724 | hash_type_signature, | |
1725 | eq_type_signature, | |
1726 | NULL, | |
1727 | &objfile->objfile_obstack, | |
1728 | hashtab_obstack_allocate, | |
1729 | dummy_obstack_deallocate); | |
1730 | ||
1731 | if (dwarf2_die_debug) | |
1732 | fprintf_unfiltered (gdb_stdlog, "Signatured types:\n"); | |
1733 | ||
1734 | while (info_ptr < dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
1735 | { | |
1736 | unsigned int offset; | |
1737 | unsigned int offset_size; | |
1738 | unsigned int type_offset; | |
1739 | unsigned int length, initial_length_size; | |
1740 | unsigned short version; | |
1741 | ULONGEST signature; | |
1742 | struct signatured_type *type_sig; | |
1743 | void **slot; | |
1744 | gdb_byte *ptr = info_ptr; | |
1745 | ||
1746 | offset = ptr - dwarf2_per_objfile->types.buffer; | |
1747 | ||
1748 | /* We need to read the type's signature in order to build the hash | |
1749 | table, but we don't need to read anything else just yet. */ | |
1750 | ||
1751 | /* Sanity check to ensure entire cu is present. */ | |
1752 | length = read_initial_length (objfile->obfd, ptr, &initial_length_size); | |
1753 | if (ptr + length + initial_length_size | |
1754 | > dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
1755 | { | |
1756 | complaint (&symfile_complaints, | |
1757 | _("debug type entry runs off end of `.debug_types' section, ignored")); | |
1758 | break; | |
1759 | } | |
1760 | ||
1761 | offset_size = initial_length_size == 4 ? 4 : 8; | |
1762 | ptr += initial_length_size; | |
1763 | version = bfd_get_16 (objfile->obfd, ptr); | |
1764 | ptr += 2; | |
1765 | ptr += offset_size; /* abbrev offset */ | |
1766 | ptr += 1; /* address size */ | |
1767 | signature = bfd_get_64 (objfile->obfd, ptr); | |
1768 | ptr += 8; | |
1769 | type_offset = read_offset_1 (objfile->obfd, ptr, offset_size); | |
1770 | ||
1771 | type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig)); | |
1772 | memset (type_sig, 0, sizeof (*type_sig)); | |
1773 | type_sig->signature = signature; | |
1774 | type_sig->offset = offset; | |
1775 | type_sig->type_offset = type_offset; | |
1776 | ||
1777 | slot = htab_find_slot (types_htab, type_sig, INSERT); | |
1778 | gdb_assert (slot != NULL); | |
1779 | *slot = type_sig; | |
1780 | ||
1781 | if (dwarf2_die_debug) | |
1782 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
1783 | offset, phex (signature, sizeof (signature))); | |
1784 | ||
1785 | info_ptr = info_ptr + initial_length_size + length; | |
1786 | } | |
1787 | ||
1788 | dwarf2_per_objfile->signatured_types = types_htab; | |
1789 | ||
1790 | return 1; | |
1791 | } | |
1792 | ||
1793 | /* Lookup a signature based type. | |
1794 | Returns NULL if SIG is not present in the table. */ | |
1795 | ||
1796 | static struct signatured_type * | |
1797 | lookup_signatured_type (struct objfile *objfile, ULONGEST sig) | |
1798 | { | |
1799 | struct signatured_type find_entry, *entry; | |
1800 | ||
1801 | if (dwarf2_per_objfile->signatured_types == NULL) | |
1802 | { | |
1803 | complaint (&symfile_complaints, | |
1804 | _("missing `.debug_types' section for DW_FORM_sig8 die")); | |
1805 | return 0; | |
1806 | } | |
1807 | ||
1808 | find_entry.signature = sig; | |
1809 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
1810 | return entry; | |
1811 | } | |
1812 | ||
d85a05f0 DJ |
1813 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
1814 | ||
1815 | static void | |
1816 | init_cu_die_reader (struct die_reader_specs *reader, | |
1817 | struct dwarf2_cu *cu) | |
1818 | { | |
1819 | reader->abfd = cu->objfile->obfd; | |
1820 | reader->cu = cu; | |
1821 | if (cu->per_cu->from_debug_types) | |
be391dca TT |
1822 | { |
1823 | gdb_assert (dwarf2_per_objfile->types.readin); | |
1824 | reader->buffer = dwarf2_per_objfile->types.buffer; | |
1825 | } | |
d85a05f0 | 1826 | else |
be391dca TT |
1827 | { |
1828 | gdb_assert (dwarf2_per_objfile->info.readin); | |
1829 | reader->buffer = dwarf2_per_objfile->info.buffer; | |
1830 | } | |
d85a05f0 DJ |
1831 | } |
1832 | ||
1833 | /* Find the base address of the compilation unit for range lists and | |
1834 | location lists. It will normally be specified by DW_AT_low_pc. | |
1835 | In DWARF-3 draft 4, the base address could be overridden by | |
1836 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
1837 | compilation units with discontinuous ranges. */ | |
1838 | ||
1839 | static void | |
1840 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
1841 | { | |
1842 | struct attribute *attr; | |
1843 | ||
1844 | cu->base_known = 0; | |
1845 | cu->base_address = 0; | |
1846 | ||
1847 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
1848 | if (attr) | |
1849 | { | |
1850 | cu->base_address = DW_ADDR (attr); | |
1851 | cu->base_known = 1; | |
1852 | } | |
1853 | else | |
1854 | { | |
1855 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
1856 | if (attr) | |
1857 | { | |
1858 | cu->base_address = DW_ADDR (attr); | |
1859 | cu->base_known = 1; | |
1860 | } | |
1861 | } | |
1862 | } | |
1863 | ||
348e048f DE |
1864 | /* Subroutine of process_type_comp_unit and dwarf2_build_psymtabs_hard |
1865 | to combine the common parts. | |
93311388 | 1866 | Process a compilation unit for a psymtab. |
348e048f DE |
1867 | BUFFER is a pointer to the beginning of the dwarf section buffer, |
1868 | either .debug_info or debug_types. | |
93311388 DE |
1869 | INFO_PTR is a pointer to the start of the CU. |
1870 | Returns a pointer to the next CU. */ | |
aaa75496 | 1871 | |
93311388 DE |
1872 | static gdb_byte * |
1873 | process_psymtab_comp_unit (struct objfile *objfile, | |
1874 | struct dwarf2_per_cu_data *this_cu, | |
1875 | gdb_byte *buffer, gdb_byte *info_ptr, | |
1876 | unsigned int buffer_size) | |
c906108c | 1877 | { |
c906108c | 1878 | bfd *abfd = objfile->obfd; |
93311388 | 1879 | gdb_byte *beg_of_comp_unit = info_ptr; |
d85a05f0 | 1880 | struct die_info *comp_unit_die; |
c906108c | 1881 | struct partial_symtab *pst; |
5734ee8b | 1882 | CORE_ADDR baseaddr; |
93311388 DE |
1883 | struct cleanup *back_to_inner; |
1884 | struct dwarf2_cu cu; | |
93311388 | 1885 | unsigned int bytes_read; |
d85a05f0 DJ |
1886 | int has_children, has_pc_info; |
1887 | struct attribute *attr; | |
1888 | const char *name; | |
1889 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
1890 | struct die_reader_specs reader_specs; | |
c906108c | 1891 | |
93311388 DE |
1892 | memset (&cu, 0, sizeof (cu)); |
1893 | cu.objfile = objfile; | |
1894 | obstack_init (&cu.comp_unit_obstack); | |
c906108c | 1895 | |
93311388 | 1896 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); |
ae038cb0 | 1897 | |
93311388 DE |
1898 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, |
1899 | buffer, buffer_size, | |
1900 | abfd); | |
10b3939b | 1901 | |
93311388 DE |
1902 | /* Complete the cu_header. */ |
1903 | cu.header.offset = beg_of_comp_unit - buffer; | |
1904 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
ff013f42 | 1905 | |
93311388 | 1906 | cu.list_in_scope = &file_symbols; |
af703f96 | 1907 | |
328c9494 DJ |
1908 | /* If this compilation unit was already read in, free the |
1909 | cached copy in order to read it in again. This is | |
1910 | necessary because we skipped some symbols when we first | |
1911 | read in the compilation unit (see load_partial_dies). | |
1912 | This problem could be avoided, but the benefit is | |
1913 | unclear. */ | |
1914 | if (this_cu->cu != NULL) | |
1915 | free_one_cached_comp_unit (this_cu->cu); | |
1916 | ||
1917 | /* Note that this is a pointer to our stack frame, being | |
1918 | added to a global data structure. It will be cleaned up | |
1919 | in free_stack_comp_unit when we finish with this | |
1920 | compilation unit. */ | |
1921 | this_cu->cu = &cu; | |
d85a05f0 DJ |
1922 | cu.per_cu = this_cu; |
1923 | ||
93311388 DE |
1924 | /* Read the abbrevs for this compilation unit into a table. */ |
1925 | dwarf2_read_abbrevs (abfd, &cu); | |
1926 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
af703f96 | 1927 | |
93311388 | 1928 | /* Read the compilation unit die. */ |
348e048f DE |
1929 | if (this_cu->from_debug_types) |
1930 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
d85a05f0 DJ |
1931 | init_cu_die_reader (&reader_specs, &cu); |
1932 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
1933 | &has_children); | |
93311388 | 1934 | |
348e048f DE |
1935 | if (this_cu->from_debug_types) |
1936 | { | |
1937 | /* offset,length haven't been set yet for type units. */ | |
1938 | this_cu->offset = cu.header.offset; | |
1939 | this_cu->length = cu.header.length + cu.header.initial_length_size; | |
1940 | } | |
d85a05f0 | 1941 | else if (comp_unit_die->tag == DW_TAG_partial_unit) |
c906108c | 1942 | { |
93311388 DE |
1943 | info_ptr = (beg_of_comp_unit + cu.header.length |
1944 | + cu.header.initial_length_size); | |
1945 | do_cleanups (back_to_inner); | |
1946 | return info_ptr; | |
1947 | } | |
72bf9492 | 1948 | |
93311388 | 1949 | /* Set the language we're debugging. */ |
d85a05f0 DJ |
1950 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, &cu); |
1951 | if (attr) | |
1952 | set_cu_language (DW_UNSND (attr), &cu); | |
1953 | else | |
1954 | set_cu_language (language_minimal, &cu); | |
c906108c | 1955 | |
93311388 | 1956 | /* Allocate a new partial symbol table structure. */ |
d85a05f0 | 1957 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, &cu); |
93311388 | 1958 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
d85a05f0 | 1959 | (attr != NULL) ? DW_STRING (attr) : "", |
93311388 DE |
1960 | /* TEXTLOW and TEXTHIGH are set below. */ |
1961 | 0, | |
1962 | objfile->global_psymbols.next, | |
1963 | objfile->static_psymbols.next); | |
72bf9492 | 1964 | |
d85a05f0 DJ |
1965 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, &cu); |
1966 | if (attr != NULL) | |
1967 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 1968 | |
e38df1d0 | 1969 | pst->read_symtab_private = this_cu; |
72bf9492 | 1970 | |
93311388 | 1971 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 1972 | |
93311388 DE |
1973 | /* Store the function that reads in the rest of the symbol table */ |
1974 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
57349743 | 1975 | |
93311388 | 1976 | this_cu->psymtab = pst; |
c906108c | 1977 | |
d85a05f0 DJ |
1978 | dwarf2_find_base_address (comp_unit_die, &cu); |
1979 | ||
93311388 DE |
1980 | /* Possibly set the default values of LOWPC and HIGHPC from |
1981 | `DW_AT_ranges'. */ | |
d85a05f0 DJ |
1982 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
1983 | &best_highpc, &cu, pst); | |
1984 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
93311388 DE |
1985 | /* Store the contiguous range if it is not empty; it can be empty for |
1986 | CUs with no code. */ | |
1987 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
1988 | best_lowpc + baseaddr, |
1989 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
1990 | |
1991 | /* Check if comp unit has_children. | |
1992 | If so, read the rest of the partial symbols from this comp unit. | |
1993 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 1994 | if (has_children) |
93311388 DE |
1995 | { |
1996 | struct partial_die_info *first_die; | |
1997 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 1998 | |
93311388 DE |
1999 | lowpc = ((CORE_ADDR) -1); |
2000 | highpc = ((CORE_ADDR) 0); | |
c906108c | 2001 | |
93311388 | 2002 | first_die = load_partial_dies (abfd, buffer, info_ptr, 1, &cu); |
c906108c | 2003 | |
93311388 | 2004 | scan_partial_symbols (first_die, &lowpc, &highpc, |
d85a05f0 | 2005 | ! has_pc_info, &cu); |
57c22c6c | 2006 | |
93311388 DE |
2007 | /* If we didn't find a lowpc, set it to highpc to avoid |
2008 | complaints from `maint check'. */ | |
2009 | if (lowpc == ((CORE_ADDR) -1)) | |
2010 | lowpc = highpc; | |
10b3939b | 2011 | |
93311388 DE |
2012 | /* If the compilation unit didn't have an explicit address range, |
2013 | then use the information extracted from its child dies. */ | |
d85a05f0 | 2014 | if (! has_pc_info) |
93311388 | 2015 | { |
d85a05f0 DJ |
2016 | best_lowpc = lowpc; |
2017 | best_highpc = highpc; | |
93311388 DE |
2018 | } |
2019 | } | |
d85a05f0 DJ |
2020 | pst->textlow = best_lowpc + baseaddr; |
2021 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 2022 | |
93311388 DE |
2023 | pst->n_global_syms = objfile->global_psymbols.next - |
2024 | (objfile->global_psymbols.list + pst->globals_offset); | |
2025 | pst->n_static_syms = objfile->static_psymbols.next - | |
2026 | (objfile->static_psymbols.list + pst->statics_offset); | |
2027 | sort_pst_symbols (pst); | |
c906108c | 2028 | |
93311388 DE |
2029 | info_ptr = (beg_of_comp_unit + cu.header.length |
2030 | + cu.header.initial_length_size); | |
ae038cb0 | 2031 | |
348e048f DE |
2032 | if (this_cu->from_debug_types) |
2033 | { | |
2034 | /* It's not clear we want to do anything with stmt lists here. | |
2035 | Waiting to see what gcc ultimately does. */ | |
2036 | } | |
d85a05f0 | 2037 | else |
93311388 DE |
2038 | { |
2039 | /* Get the list of files included in the current compilation unit, | |
2040 | and build a psymtab for each of them. */ | |
d85a05f0 | 2041 | dwarf2_build_include_psymtabs (&cu, comp_unit_die, pst); |
93311388 | 2042 | } |
ae038cb0 | 2043 | |
93311388 | 2044 | do_cleanups (back_to_inner); |
ae038cb0 | 2045 | |
93311388 DE |
2046 | return info_ptr; |
2047 | } | |
ff013f42 | 2048 | |
348e048f DE |
2049 | /* Traversal function for htab_traverse_noresize. |
2050 | Process one .debug_types comp-unit. */ | |
2051 | ||
2052 | static int | |
2053 | process_type_comp_unit (void **slot, void *info) | |
2054 | { | |
2055 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
2056 | struct objfile *objfile = (struct objfile *) info; | |
2057 | struct dwarf2_per_cu_data *this_cu; | |
2058 | ||
2059 | this_cu = &entry->per_cu; | |
2060 | this_cu->from_debug_types = 1; | |
2061 | ||
be391dca | 2062 | gdb_assert (dwarf2_per_objfile->types.readin); |
348e048f DE |
2063 | process_psymtab_comp_unit (objfile, this_cu, |
2064 | dwarf2_per_objfile->types.buffer, | |
2065 | dwarf2_per_objfile->types.buffer + entry->offset, | |
2066 | dwarf2_per_objfile->types.size); | |
2067 | ||
2068 | return 1; | |
2069 | } | |
2070 | ||
2071 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
2072 | Build partial symbol tables for the .debug_types comp-units. */ | |
2073 | ||
2074 | static void | |
2075 | build_type_psymtabs (struct objfile *objfile) | |
2076 | { | |
2077 | if (! create_debug_types_hash_table (objfile)) | |
2078 | return; | |
2079 | ||
2080 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
2081 | process_type_comp_unit, objfile); | |
2082 | } | |
2083 | ||
93311388 DE |
2084 | /* Build the partial symbol table by doing a quick pass through the |
2085 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 2086 | |
93311388 | 2087 | static void |
c67a9c90 | 2088 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 2089 | { |
93311388 DE |
2090 | bfd *abfd = objfile->obfd; |
2091 | gdb_byte *info_ptr; | |
2092 | struct cleanup *back_to; | |
2093 | ||
be391dca | 2094 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
93311388 | 2095 | info_ptr = dwarf2_per_objfile->info.buffer; |
91c24f0a | 2096 | |
93311388 DE |
2097 | /* Any cached compilation units will be linked by the per-objfile |
2098 | read_in_chain. Make sure to free them when we're done. */ | |
2099 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 2100 | |
348e048f DE |
2101 | build_type_psymtabs (objfile); |
2102 | ||
93311388 | 2103 | create_all_comp_units (objfile); |
c906108c | 2104 | |
93311388 DE |
2105 | objfile->psymtabs_addrmap = |
2106 | addrmap_create_mutable (&objfile->objfile_obstack); | |
72bf9492 | 2107 | |
93311388 DE |
2108 | /* Since the objects we're extracting from .debug_info vary in |
2109 | length, only the individual functions to extract them (like | |
2110 | read_comp_unit_head and load_partial_die) can really know whether | |
2111 | the buffer is large enough to hold another complete object. | |
c906108c | 2112 | |
93311388 DE |
2113 | At the moment, they don't actually check that. If .debug_info |
2114 | holds just one extra byte after the last compilation unit's dies, | |
2115 | then read_comp_unit_head will happily read off the end of the | |
2116 | buffer. read_partial_die is similarly casual. Those functions | |
2117 | should be fixed. | |
c906108c | 2118 | |
93311388 DE |
2119 | For this loop condition, simply checking whether there's any data |
2120 | left at all should be sufficient. */ | |
c906108c | 2121 | |
93311388 DE |
2122 | while (info_ptr < (dwarf2_per_objfile->info.buffer |
2123 | + dwarf2_per_objfile->info.size)) | |
2124 | { | |
2125 | struct dwarf2_per_cu_data *this_cu; | |
dd373385 | 2126 | |
93311388 DE |
2127 | this_cu = dwarf2_find_comp_unit (info_ptr - dwarf2_per_objfile->info.buffer, |
2128 | objfile); | |
aaa75496 | 2129 | |
93311388 DE |
2130 | info_ptr = process_psymtab_comp_unit (objfile, this_cu, |
2131 | dwarf2_per_objfile->info.buffer, | |
2132 | info_ptr, | |
2133 | dwarf2_per_objfile->info.size); | |
c906108c | 2134 | } |
ff013f42 JK |
2135 | |
2136 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
2137 | &objfile->objfile_obstack); | |
2138 | ||
ae038cb0 DJ |
2139 | do_cleanups (back_to); |
2140 | } | |
2141 | ||
93311388 | 2142 | /* Load the partial DIEs for a secondary CU into memory. */ |
ae038cb0 DJ |
2143 | |
2144 | static void | |
93311388 DE |
2145 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu, |
2146 | struct objfile *objfile) | |
ae038cb0 DJ |
2147 | { |
2148 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 2149 | gdb_byte *info_ptr, *beg_of_comp_unit; |
d85a05f0 | 2150 | struct die_info *comp_unit_die; |
ae038cb0 | 2151 | struct dwarf2_cu *cu; |
ae038cb0 DJ |
2152 | unsigned int bytes_read; |
2153 | struct cleanup *back_to; | |
d85a05f0 DJ |
2154 | struct attribute *attr; |
2155 | int has_children; | |
2156 | struct die_reader_specs reader_specs; | |
ae038cb0 | 2157 | |
348e048f DE |
2158 | gdb_assert (! this_cu->from_debug_types); |
2159 | ||
be391dca | 2160 | gdb_assert (dwarf2_per_objfile->info.readin); |
dce234bc | 2161 | info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset; |
ae038cb0 DJ |
2162 | beg_of_comp_unit = info_ptr; |
2163 | ||
93311388 | 2164 | cu = alloc_one_comp_unit (objfile); |
ae038cb0 | 2165 | |
93311388 | 2166 | /* ??? Missing cleanup for CU? */ |
ae038cb0 | 2167 | |
328c9494 DJ |
2168 | /* Link this compilation unit into the compilation unit tree. */ |
2169 | this_cu->cu = cu; | |
2170 | cu->per_cu = this_cu; | |
2171 | cu->type_hash = this_cu->type_hash; | |
2172 | ||
93311388 DE |
2173 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, |
2174 | dwarf2_per_objfile->info.buffer, | |
2175 | dwarf2_per_objfile->info.size, | |
2176 | abfd); | |
ae038cb0 DJ |
2177 | |
2178 | /* Complete the cu_header. */ | |
93311388 | 2179 | cu->header.offset = this_cu->offset; |
d00adf39 | 2180 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; |
ae038cb0 DJ |
2181 | |
2182 | /* Read the abbrevs for this compilation unit into a table. */ | |
2183 | dwarf2_read_abbrevs (abfd, cu); | |
2184 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2185 | ||
2186 | /* Read the compilation unit die. */ | |
d85a05f0 DJ |
2187 | init_cu_die_reader (&reader_specs, cu); |
2188 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
2189 | &has_children); | |
ae038cb0 DJ |
2190 | |
2191 | /* Set the language we're debugging. */ | |
d85a05f0 DJ |
2192 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); |
2193 | if (attr) | |
2194 | set_cu_language (DW_UNSND (attr), cu); | |
2195 | else | |
2196 | set_cu_language (language_minimal, cu); | |
ae038cb0 | 2197 | |
ae038cb0 DJ |
2198 | /* Check if comp unit has_children. |
2199 | If so, read the rest of the partial symbols from this comp unit. | |
2200 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 2201 | if (has_children) |
93311388 | 2202 | load_partial_dies (abfd, dwarf2_per_objfile->info.buffer, info_ptr, 0, cu); |
ae038cb0 DJ |
2203 | |
2204 | do_cleanups (back_to); | |
2205 | } | |
2206 | ||
2207 | /* Create a list of all compilation units in OBJFILE. We do this only | |
2208 | if an inter-comp-unit reference is found; presumably if there is one, | |
2209 | there will be many, and one will occur early in the .debug_info section. | |
2210 | So there's no point in building this list incrementally. */ | |
2211 | ||
2212 | static void | |
2213 | create_all_comp_units (struct objfile *objfile) | |
2214 | { | |
2215 | int n_allocated; | |
2216 | int n_comp_units; | |
2217 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
2218 | gdb_byte *info_ptr; |
2219 | ||
2220 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
2221 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
2222 | |
2223 | n_comp_units = 0; | |
2224 | n_allocated = 10; | |
2225 | all_comp_units = xmalloc (n_allocated | |
2226 | * sizeof (struct dwarf2_per_cu_data *)); | |
2227 | ||
dce234bc | 2228 | while (info_ptr < dwarf2_per_objfile->info.buffer + dwarf2_per_objfile->info.size) |
ae038cb0 | 2229 | { |
c764a876 | 2230 | unsigned int length, initial_length_size; |
fe1b8b76 | 2231 | gdb_byte *beg_of_comp_unit; |
ae038cb0 | 2232 | struct dwarf2_per_cu_data *this_cu; |
c764a876 | 2233 | unsigned int offset; |
ae038cb0 | 2234 | |
dce234bc | 2235 | offset = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
2236 | |
2237 | /* Read just enough information to find out where the next | |
2238 | compilation unit is. */ | |
c764a876 DE |
2239 | length = read_initial_length (objfile->obfd, info_ptr, |
2240 | &initial_length_size); | |
ae038cb0 DJ |
2241 | |
2242 | /* Save the compilation unit for later lookup. */ | |
2243 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
2244 | sizeof (struct dwarf2_per_cu_data)); | |
2245 | memset (this_cu, 0, sizeof (*this_cu)); | |
2246 | this_cu->offset = offset; | |
c764a876 | 2247 | this_cu->length = length + initial_length_size; |
ae038cb0 DJ |
2248 | |
2249 | if (n_comp_units == n_allocated) | |
2250 | { | |
2251 | n_allocated *= 2; | |
2252 | all_comp_units = xrealloc (all_comp_units, | |
2253 | n_allocated | |
2254 | * sizeof (struct dwarf2_per_cu_data *)); | |
2255 | } | |
2256 | all_comp_units[n_comp_units++] = this_cu; | |
2257 | ||
2258 | info_ptr = info_ptr + this_cu->length; | |
2259 | } | |
2260 | ||
2261 | dwarf2_per_objfile->all_comp_units | |
2262 | = obstack_alloc (&objfile->objfile_obstack, | |
2263 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
2264 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
2265 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
2266 | xfree (all_comp_units); | |
2267 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
2268 | } |
2269 | ||
5734ee8b DJ |
2270 | /* Process all loaded DIEs for compilation unit CU, starting at |
2271 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
2272 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
2273 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
2274 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
2275 | and record the covered ranges in the addrmap. */ | |
c906108c | 2276 | |
72bf9492 DJ |
2277 | static void |
2278 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 2279 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 2280 | { |
e7c27a73 | 2281 | struct objfile *objfile = cu->objfile; |
c906108c | 2282 | bfd *abfd = objfile->obfd; |
72bf9492 | 2283 | struct partial_die_info *pdi; |
c906108c | 2284 | |
91c24f0a DC |
2285 | /* Now, march along the PDI's, descending into ones which have |
2286 | interesting children but skipping the children of the other ones, | |
2287 | until we reach the end of the compilation unit. */ | |
c906108c | 2288 | |
72bf9492 | 2289 | pdi = first_die; |
91c24f0a | 2290 | |
72bf9492 DJ |
2291 | while (pdi != NULL) |
2292 | { | |
2293 | fixup_partial_die (pdi, cu); | |
c906108c | 2294 | |
91c24f0a DC |
2295 | /* Anonymous namespaces have no name but have interesting |
2296 | children, so we need to look at them. Ditto for anonymous | |
2297 | enums. */ | |
933c6fe4 | 2298 | |
72bf9492 DJ |
2299 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
2300 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 2301 | { |
72bf9492 | 2302 | switch (pdi->tag) |
c906108c SS |
2303 | { |
2304 | case DW_TAG_subprogram: | |
5734ee8b | 2305 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c SS |
2306 | break; |
2307 | case DW_TAG_variable: | |
2308 | case DW_TAG_typedef: | |
91c24f0a | 2309 | case DW_TAG_union_type: |
72bf9492 | 2310 | if (!pdi->is_declaration) |
63d06c5c | 2311 | { |
72bf9492 | 2312 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
2313 | } |
2314 | break; | |
c906108c | 2315 | case DW_TAG_class_type: |
680b30c7 | 2316 | case DW_TAG_interface_type: |
c906108c | 2317 | case DW_TAG_structure_type: |
72bf9492 | 2318 | if (!pdi->is_declaration) |
c906108c | 2319 | { |
72bf9492 | 2320 | add_partial_symbol (pdi, cu); |
c906108c SS |
2321 | } |
2322 | break; | |
91c24f0a | 2323 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
2324 | if (!pdi->is_declaration) |
2325 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
2326 | break; |
2327 | case DW_TAG_base_type: | |
a02abb62 | 2328 | case DW_TAG_subrange_type: |
c906108c | 2329 | /* File scope base type definitions are added to the partial |
c5aa993b | 2330 | symbol table. */ |
72bf9492 | 2331 | add_partial_symbol (pdi, cu); |
c906108c | 2332 | break; |
d9fa45fe | 2333 | case DW_TAG_namespace: |
5734ee8b | 2334 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 2335 | break; |
5d7cb8df JK |
2336 | case DW_TAG_module: |
2337 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
2338 | break; | |
c906108c SS |
2339 | default: |
2340 | break; | |
2341 | } | |
2342 | } | |
2343 | ||
72bf9492 DJ |
2344 | /* If the die has a sibling, skip to the sibling. */ |
2345 | ||
2346 | pdi = pdi->die_sibling; | |
2347 | } | |
2348 | } | |
2349 | ||
2350 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 2351 | |
72bf9492 | 2352 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
2353 | name is concatenated with "::" and the partial DIE's name. For |
2354 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
2355 | Enumerators are an exception; they use the scope of their parent |
2356 | enumeration type, i.e. the name of the enumeration type is not | |
2357 | prepended to the enumerator. | |
91c24f0a | 2358 | |
72bf9492 DJ |
2359 | There are two complexities. One is DW_AT_specification; in this |
2360 | case "parent" means the parent of the target of the specification, | |
2361 | instead of the direct parent of the DIE. The other is compilers | |
2362 | which do not emit DW_TAG_namespace; in this case we try to guess | |
2363 | the fully qualified name of structure types from their members' | |
2364 | linkage names. This must be done using the DIE's children rather | |
2365 | than the children of any DW_AT_specification target. We only need | |
2366 | to do this for structures at the top level, i.e. if the target of | |
2367 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
2368 | have a parent. */ | |
2369 | ||
2370 | /* Compute the scope prefix associated with PDI's parent, in | |
2371 | compilation unit CU. The result will be allocated on CU's | |
2372 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
2373 | field. NULL is returned if no prefix is necessary. */ | |
2374 | static char * | |
2375 | partial_die_parent_scope (struct partial_die_info *pdi, | |
2376 | struct dwarf2_cu *cu) | |
2377 | { | |
2378 | char *grandparent_scope; | |
2379 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 2380 | |
72bf9492 DJ |
2381 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
2382 | then this means the parent of the specification DIE. */ | |
2383 | ||
2384 | real_pdi = pdi; | |
72bf9492 | 2385 | while (real_pdi->has_specification) |
10b3939b | 2386 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
2387 | |
2388 | parent = real_pdi->die_parent; | |
2389 | if (parent == NULL) | |
2390 | return NULL; | |
2391 | ||
2392 | if (parent->scope_set) | |
2393 | return parent->scope; | |
2394 | ||
2395 | fixup_partial_die (parent, cu); | |
2396 | ||
10b3939b | 2397 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 DJ |
2398 | |
2399 | if (parent->tag == DW_TAG_namespace | |
2400 | || parent->tag == DW_TAG_structure_type | |
2401 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 2402 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
2403 | || parent->tag == DW_TAG_union_type |
2404 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
2405 | { |
2406 | if (grandparent_scope == NULL) | |
2407 | parent->scope = parent->name; | |
2408 | else | |
987504bb JJ |
2409 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
2410 | parent->name, cu); | |
72bf9492 | 2411 | } |
ceeb3d5a | 2412 | else if (parent->tag == DW_TAG_enumerator) |
72bf9492 DJ |
2413 | /* Enumerators should not get the name of the enumeration as a prefix. */ |
2414 | parent->scope = grandparent_scope; | |
2415 | else | |
2416 | { | |
2417 | /* FIXME drow/2004-04-01: What should we be doing with | |
2418 | function-local names? For partial symbols, we should probably be | |
2419 | ignoring them. */ | |
2420 | complaint (&symfile_complaints, | |
e2e0b3e5 | 2421 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
2422 | parent->tag, pdi->offset); |
2423 | parent->scope = grandparent_scope; | |
c906108c SS |
2424 | } |
2425 | ||
72bf9492 DJ |
2426 | parent->scope_set = 1; |
2427 | return parent->scope; | |
2428 | } | |
2429 | ||
2430 | /* Return the fully scoped name associated with PDI, from compilation unit | |
2431 | CU. The result will be allocated with malloc. */ | |
2432 | static char * | |
2433 | partial_die_full_name (struct partial_die_info *pdi, | |
2434 | struct dwarf2_cu *cu) | |
2435 | { | |
2436 | char *parent_scope; | |
2437 | ||
2438 | parent_scope = partial_die_parent_scope (pdi, cu); | |
2439 | if (parent_scope == NULL) | |
2440 | return NULL; | |
2441 | else | |
987504bb | 2442 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
2443 | } |
2444 | ||
2445 | static void | |
72bf9492 | 2446 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 2447 | { |
e7c27a73 | 2448 | struct objfile *objfile = cu->objfile; |
c906108c | 2449 | CORE_ADDR addr = 0; |
decbce07 | 2450 | char *actual_name = NULL; |
72bf9492 | 2451 | const char *my_prefix; |
5c4e30ca | 2452 | const struct partial_symbol *psym = NULL; |
e142c38c | 2453 | CORE_ADDR baseaddr; |
72bf9492 | 2454 | int built_actual_name = 0; |
e142c38c DJ |
2455 | |
2456 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2457 | |
94af9270 KS |
2458 | actual_name = partial_die_full_name (pdi, cu); |
2459 | if (actual_name) | |
2460 | built_actual_name = 1; | |
63d06c5c | 2461 | |
72bf9492 DJ |
2462 | if (actual_name == NULL) |
2463 | actual_name = pdi->name; | |
2464 | ||
c906108c SS |
2465 | switch (pdi->tag) |
2466 | { | |
2467 | case DW_TAG_subprogram: | |
2cfa0c8d | 2468 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 2469 | { |
2cfa0c8d JB |
2470 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
2471 | of the global scope. But in Ada, we want to be able to access | |
2472 | nested procedures globally. So all Ada subprograms are stored | |
2473 | in the global scope. */ | |
38d518c9 | 2474 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 2475 | mst_text, objfile); */ |
38d518c9 | 2476 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2477 | built_actual_name, |
5c4e30ca DC |
2478 | VAR_DOMAIN, LOC_BLOCK, |
2479 | &objfile->global_psymbols, | |
2480 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 2481 | cu->language, objfile); |
c906108c SS |
2482 | } |
2483 | else | |
2484 | { | |
38d518c9 | 2485 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 2486 | mst_file_text, objfile); */ |
38d518c9 | 2487 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2488 | built_actual_name, |
5c4e30ca DC |
2489 | VAR_DOMAIN, LOC_BLOCK, |
2490 | &objfile->static_psymbols, | |
2491 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 2492 | cu->language, objfile); |
c906108c SS |
2493 | } |
2494 | break; | |
2495 | case DW_TAG_variable: | |
2496 | if (pdi->is_external) | |
2497 | { | |
2498 | /* Global Variable. | |
2499 | Don't enter into the minimal symbol tables as there is | |
2500 | a minimal symbol table entry from the ELF symbols already. | |
2501 | Enter into partial symbol table if it has a location | |
2502 | descriptor or a type. | |
2503 | If the location descriptor is missing, new_symbol will create | |
2504 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
2505 | be determined from the minimal symbol table whenever the variable | |
2506 | is referenced. | |
2507 | The address for the partial symbol table entry is not | |
2508 | used by GDB, but it comes in handy for debugging partial symbol | |
2509 | table building. */ | |
2510 | ||
2511 | if (pdi->locdesc) | |
e7c27a73 | 2512 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 2513 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 2514 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2515 | built_actual_name, |
5c4e30ca DC |
2516 | VAR_DOMAIN, LOC_STATIC, |
2517 | &objfile->global_psymbols, | |
2518 | 0, addr + baseaddr, | |
e142c38c | 2519 | cu->language, objfile); |
c906108c SS |
2520 | } |
2521 | else | |
2522 | { | |
2523 | /* Static Variable. Skip symbols without location descriptors. */ | |
2524 | if (pdi->locdesc == NULL) | |
decbce07 MS |
2525 | { |
2526 | if (built_actual_name) | |
2527 | xfree (actual_name); | |
2528 | return; | |
2529 | } | |
e7c27a73 | 2530 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 2531 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 2532 | mst_file_data, objfile); */ |
38d518c9 | 2533 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2534 | built_actual_name, |
5c4e30ca DC |
2535 | VAR_DOMAIN, LOC_STATIC, |
2536 | &objfile->static_psymbols, | |
2537 | 0, addr + baseaddr, | |
e142c38c | 2538 | cu->language, objfile); |
c906108c SS |
2539 | } |
2540 | break; | |
2541 | case DW_TAG_typedef: | |
2542 | case DW_TAG_base_type: | |
a02abb62 | 2543 | case DW_TAG_subrange_type: |
38d518c9 | 2544 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2545 | built_actual_name, |
176620f1 | 2546 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 2547 | &objfile->static_psymbols, |
e142c38c | 2548 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2549 | break; |
72bf9492 DJ |
2550 | case DW_TAG_namespace: |
2551 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 2552 | built_actual_name, |
72bf9492 DJ |
2553 | VAR_DOMAIN, LOC_TYPEDEF, |
2554 | &objfile->global_psymbols, | |
2555 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
2556 | break; | |
c906108c | 2557 | case DW_TAG_class_type: |
680b30c7 | 2558 | case DW_TAG_interface_type: |
c906108c SS |
2559 | case DW_TAG_structure_type: |
2560 | case DW_TAG_union_type: | |
2561 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
2562 | /* Skip external references. The DWARF standard says in the section |
2563 | about "Structure, Union, and Class Type Entries": "An incomplete | |
2564 | structure, union or class type is represented by a structure, | |
2565 | union or class entry that does not have a byte size attribute | |
2566 | and that has a DW_AT_declaration attribute." */ | |
2567 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
2568 | { |
2569 | if (built_actual_name) | |
2570 | xfree (actual_name); | |
2571 | return; | |
2572 | } | |
fa4028e9 | 2573 | |
63d06c5c DC |
2574 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
2575 | static vs. global. */ | |
38d518c9 | 2576 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2577 | built_actual_name, |
176620f1 | 2578 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
2579 | (cu->language == language_cplus |
2580 | || cu->language == language_java) | |
63d06c5c DC |
2581 | ? &objfile->global_psymbols |
2582 | : &objfile->static_psymbols, | |
e142c38c | 2583 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2584 | |
c906108c SS |
2585 | break; |
2586 | case DW_TAG_enumerator: | |
38d518c9 | 2587 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2588 | built_actual_name, |
176620f1 | 2589 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
2590 | (cu->language == language_cplus |
2591 | || cu->language == language_java) | |
f6fe98ef DJ |
2592 | ? &objfile->global_psymbols |
2593 | : &objfile->static_psymbols, | |
e142c38c | 2594 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2595 | break; |
2596 | default: | |
2597 | break; | |
2598 | } | |
5c4e30ca | 2599 | |
72bf9492 DJ |
2600 | if (built_actual_name) |
2601 | xfree (actual_name); | |
c906108c SS |
2602 | } |
2603 | ||
5c4e30ca DC |
2604 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2605 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2606 | the name of the enclosing namespace. */ | |
91c24f0a | 2607 | |
72bf9492 DJ |
2608 | static void |
2609 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2610 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 2611 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 2612 | { |
e7c27a73 | 2613 | struct objfile *objfile = cu->objfile; |
5c4e30ca | 2614 | |
72bf9492 | 2615 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2616 | |
72bf9492 | 2617 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2618 | |
2619 | /* Now scan partial symbols in that namespace. */ | |
2620 | ||
91c24f0a | 2621 | if (pdi->has_children) |
5734ee8b | 2622 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
2623 | } |
2624 | ||
5d7cb8df JK |
2625 | /* Read a partial die corresponding to a Fortran module. */ |
2626 | ||
2627 | static void | |
2628 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
2629 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
2630 | { | |
2631 | /* Now scan partial symbols in that module. | |
2632 | ||
2633 | FIXME: Support the separate Fortran module namespaces. */ | |
2634 | ||
2635 | if (pdi->has_children) | |
2636 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
2637 | } | |
2638 | ||
bc30ff58 JB |
2639 | /* Read a partial die corresponding to a subprogram and create a partial |
2640 | symbol for that subprogram. When the CU language allows it, this | |
2641 | routine also defines a partial symbol for each nested subprogram | |
2642 | that this subprogram contains. | |
2643 | ||
2644 | DIE my also be a lexical block, in which case we simply search | |
2645 | recursively for suprograms defined inside that lexical block. | |
2646 | Again, this is only performed when the CU language allows this | |
2647 | type of definitions. */ | |
2648 | ||
2649 | static void | |
2650 | add_partial_subprogram (struct partial_die_info *pdi, | |
2651 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 2652 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
2653 | { |
2654 | if (pdi->tag == DW_TAG_subprogram) | |
2655 | { | |
2656 | if (pdi->has_pc_info) | |
2657 | { | |
2658 | if (pdi->lowpc < *lowpc) | |
2659 | *lowpc = pdi->lowpc; | |
2660 | if (pdi->highpc > *highpc) | |
2661 | *highpc = pdi->highpc; | |
5734ee8b DJ |
2662 | if (need_pc) |
2663 | { | |
2664 | CORE_ADDR baseaddr; | |
2665 | struct objfile *objfile = cu->objfile; | |
2666 | ||
2667 | baseaddr = ANOFFSET (objfile->section_offsets, | |
2668 | SECT_OFF_TEXT (objfile)); | |
2669 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
2670 | pdi->lowpc + baseaddr, |
2671 | pdi->highpc - 1 + baseaddr, | |
5734ee8b DJ |
2672 | cu->per_cu->psymtab); |
2673 | } | |
bc30ff58 JB |
2674 | if (!pdi->is_declaration) |
2675 | add_partial_symbol (pdi, cu); | |
2676 | } | |
2677 | } | |
2678 | ||
2679 | if (! pdi->has_children) | |
2680 | return; | |
2681 | ||
2682 | if (cu->language == language_ada) | |
2683 | { | |
2684 | pdi = pdi->die_child; | |
2685 | while (pdi != NULL) | |
2686 | { | |
2687 | fixup_partial_die (pdi, cu); | |
2688 | if (pdi->tag == DW_TAG_subprogram | |
2689 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 2690 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
2691 | pdi = pdi->die_sibling; |
2692 | } | |
2693 | } | |
2694 | } | |
2695 | ||
72bf9492 DJ |
2696 | /* See if we can figure out if the class lives in a namespace. We do |
2697 | this by looking for a member function; its demangled name will | |
2698 | contain namespace info, if there is any. */ | |
63d06c5c | 2699 | |
72bf9492 DJ |
2700 | static void |
2701 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2702 | struct dwarf2_cu *cu) | |
63d06c5c | 2703 | { |
987504bb JJ |
2704 | if ((cu->language == language_cplus |
2705 | || cu->language == language_java) | |
72bf9492 | 2706 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2707 | && struct_pdi->has_children) |
2708 | { | |
63d06c5c DC |
2709 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2710 | what template types look like, because the demangler | |
2711 | frequently doesn't give the same name as the debug info. We | |
2712 | could fix this by only using the demangled name to get the | |
134d01f1 | 2713 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2714 | |
72bf9492 | 2715 | struct partial_die_info *real_pdi; |
5d51ca54 | 2716 | |
72bf9492 DJ |
2717 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2718 | we should not do this. We'll prepend the parent's fully qualified | |
2719 | name when we create the partial symbol. */ | |
5d51ca54 | 2720 | |
72bf9492 | 2721 | real_pdi = struct_pdi; |
72bf9492 | 2722 | while (real_pdi->has_specification) |
10b3939b | 2723 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2724 | |
72bf9492 DJ |
2725 | if (real_pdi->die_parent != NULL) |
2726 | return; | |
63d06c5c | 2727 | } |
63d06c5c DC |
2728 | } |
2729 | ||
91c24f0a DC |
2730 | /* Read a partial die corresponding to an enumeration type. */ |
2731 | ||
72bf9492 DJ |
2732 | static void |
2733 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2734 | struct dwarf2_cu *cu) | |
91c24f0a | 2735 | { |
e7c27a73 | 2736 | struct objfile *objfile = cu->objfile; |
91c24f0a | 2737 | bfd *abfd = objfile->obfd; |
72bf9492 | 2738 | struct partial_die_info *pdi; |
91c24f0a DC |
2739 | |
2740 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2741 | add_partial_symbol (enum_pdi, cu); |
2742 | ||
2743 | pdi = enum_pdi->die_child; | |
2744 | while (pdi) | |
91c24f0a | 2745 | { |
72bf9492 | 2746 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 2747 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 2748 | else |
72bf9492 DJ |
2749 | add_partial_symbol (pdi, cu); |
2750 | pdi = pdi->die_sibling; | |
91c24f0a | 2751 | } |
91c24f0a DC |
2752 | } |
2753 | ||
4bb7a0a7 DJ |
2754 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2755 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2756 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2757 | the initial number. */ | |
2758 | ||
2759 | static struct abbrev_info * | |
fe1b8b76 | 2760 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 2761 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2762 | { |
2763 | bfd *abfd = cu->objfile->obfd; | |
2764 | unsigned int abbrev_number; | |
2765 | struct abbrev_info *abbrev; | |
2766 | ||
2767 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2768 | ||
2769 | if (abbrev_number == 0) | |
2770 | return NULL; | |
2771 | ||
2772 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2773 | if (!abbrev) | |
2774 | { | |
8a3fe4f8 | 2775 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
2776 | bfd_get_filename (abfd)); |
2777 | } | |
2778 | ||
2779 | return abbrev; | |
2780 | } | |
2781 | ||
93311388 DE |
2782 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
2783 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
2784 | DIE. Any children of the skipped DIEs will also be skipped. */ |
2785 | ||
fe1b8b76 | 2786 | static gdb_byte * |
93311388 | 2787 | skip_children (gdb_byte *buffer, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2788 | { |
2789 | struct abbrev_info *abbrev; | |
2790 | unsigned int bytes_read; | |
2791 | ||
2792 | while (1) | |
2793 | { | |
2794 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2795 | if (abbrev == NULL) | |
2796 | return info_ptr + bytes_read; | |
2797 | else | |
93311388 | 2798 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
4bb7a0a7 DJ |
2799 | } |
2800 | } | |
2801 | ||
93311388 DE |
2802 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
2803 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
2804 | abbrev corresponding to that skipped uleb128 should be passed in |
2805 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2806 | children. */ | |
2807 | ||
fe1b8b76 | 2808 | static gdb_byte * |
93311388 DE |
2809 | skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
2810 | struct abbrev_info *abbrev, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
2811 | { |
2812 | unsigned int bytes_read; | |
2813 | struct attribute attr; | |
2814 | bfd *abfd = cu->objfile->obfd; | |
2815 | unsigned int form, i; | |
2816 | ||
2817 | for (i = 0; i < abbrev->num_attrs; i++) | |
2818 | { | |
2819 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2820 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2821 | { | |
2822 | read_attribute (&attr, &abbrev->attrs[i], | |
2823 | abfd, info_ptr, cu); | |
2824 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 2825 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 2826 | else |
93311388 | 2827 | return buffer + dwarf2_get_ref_die_offset (&attr); |
4bb7a0a7 DJ |
2828 | } |
2829 | ||
2830 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2831 | form = abbrev->attrs[i].form; | |
2832 | skip_attribute: | |
2833 | switch (form) | |
2834 | { | |
4bb7a0a7 | 2835 | case DW_FORM_ref_addr: |
ae411497 TT |
2836 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
2837 | and later it is offset sized. */ | |
2838 | if (cu->header.version == 2) | |
2839 | info_ptr += cu->header.addr_size; | |
2840 | else | |
2841 | info_ptr += cu->header.offset_size; | |
2842 | break; | |
2843 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
2844 | info_ptr += cu->header.addr_size; |
2845 | break; | |
2846 | case DW_FORM_data1: | |
2847 | case DW_FORM_ref1: | |
2848 | case DW_FORM_flag: | |
2849 | info_ptr += 1; | |
2850 | break; | |
2851 | case DW_FORM_data2: | |
2852 | case DW_FORM_ref2: | |
2853 | info_ptr += 2; | |
2854 | break; | |
2855 | case DW_FORM_data4: | |
2856 | case DW_FORM_ref4: | |
2857 | info_ptr += 4; | |
2858 | break; | |
2859 | case DW_FORM_data8: | |
2860 | case DW_FORM_ref8: | |
348e048f | 2861 | case DW_FORM_sig8: |
4bb7a0a7 DJ |
2862 | info_ptr += 8; |
2863 | break; | |
2864 | case DW_FORM_string: | |
2865 | read_string (abfd, info_ptr, &bytes_read); | |
2866 | info_ptr += bytes_read; | |
2867 | break; | |
2868 | case DW_FORM_strp: | |
2869 | info_ptr += cu->header.offset_size; | |
2870 | break; | |
2871 | case DW_FORM_block: | |
2872 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2873 | info_ptr += bytes_read; | |
2874 | break; | |
2875 | case DW_FORM_block1: | |
2876 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2877 | break; | |
2878 | case DW_FORM_block2: | |
2879 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2880 | break; | |
2881 | case DW_FORM_block4: | |
2882 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2883 | break; | |
2884 | case DW_FORM_sdata: | |
2885 | case DW_FORM_udata: | |
2886 | case DW_FORM_ref_udata: | |
2887 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2888 | break; | |
2889 | case DW_FORM_indirect: | |
2890 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2891 | info_ptr += bytes_read; | |
2892 | /* We need to continue parsing from here, so just go back to | |
2893 | the top. */ | |
2894 | goto skip_attribute; | |
2895 | ||
2896 | default: | |
8a3fe4f8 | 2897 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
2898 | dwarf_form_name (form), |
2899 | bfd_get_filename (abfd)); | |
2900 | } | |
2901 | } | |
2902 | ||
2903 | if (abbrev->has_children) | |
93311388 | 2904 | return skip_children (buffer, info_ptr, cu); |
4bb7a0a7 DJ |
2905 | else |
2906 | return info_ptr; | |
2907 | } | |
2908 | ||
93311388 DE |
2909 | /* Locate ORIG_PDI's sibling. |
2910 | INFO_PTR should point to the start of the next DIE after ORIG_PDI | |
2911 | in BUFFER. */ | |
91c24f0a | 2912 | |
fe1b8b76 | 2913 | static gdb_byte * |
93311388 DE |
2914 | locate_pdi_sibling (struct partial_die_info *orig_pdi, |
2915 | gdb_byte *buffer, gdb_byte *info_ptr, | |
e7c27a73 | 2916 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2917 | { |
2918 | /* Do we know the sibling already? */ | |
72bf9492 | 2919 | |
91c24f0a DC |
2920 | if (orig_pdi->sibling) |
2921 | return orig_pdi->sibling; | |
2922 | ||
2923 | /* Are there any children to deal with? */ | |
2924 | ||
2925 | if (!orig_pdi->has_children) | |
2926 | return info_ptr; | |
2927 | ||
4bb7a0a7 | 2928 | /* Skip the children the long way. */ |
91c24f0a | 2929 | |
93311388 | 2930 | return skip_children (buffer, info_ptr, cu); |
91c24f0a DC |
2931 | } |
2932 | ||
c906108c SS |
2933 | /* Expand this partial symbol table into a full symbol table. */ |
2934 | ||
2935 | static void | |
fba45db2 | 2936 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2937 | { |
2938 | /* FIXME: This is barely more than a stub. */ | |
2939 | if (pst != NULL) | |
2940 | { | |
2941 | if (pst->readin) | |
2942 | { | |
8a3fe4f8 | 2943 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
2944 | } |
2945 | else | |
2946 | { | |
2947 | if (info_verbose) | |
2948 | { | |
a3f17187 | 2949 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
2950 | gdb_flush (gdb_stdout); |
2951 | } | |
2952 | ||
10b3939b DJ |
2953 | /* Restore our global data. */ |
2954 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2955 | dwarf2_objfile_data_key); | |
2956 | ||
b2ab525c KB |
2957 | /* If this psymtab is constructed from a debug-only objfile, the |
2958 | has_section_at_zero flag will not necessarily be correct. We | |
2959 | can get the correct value for this flag by looking at the data | |
2960 | associated with the (presumably stripped) associated objfile. */ | |
2961 | if (pst->objfile->separate_debug_objfile_backlink) | |
2962 | { | |
2963 | struct dwarf2_per_objfile *dpo_backlink | |
2964 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
2965 | dwarf2_objfile_data_key); | |
2966 | dwarf2_per_objfile->has_section_at_zero | |
2967 | = dpo_backlink->has_section_at_zero; | |
2968 | } | |
2969 | ||
c906108c SS |
2970 | psymtab_to_symtab_1 (pst); |
2971 | ||
2972 | /* Finish up the debug error message. */ | |
2973 | if (info_verbose) | |
a3f17187 | 2974 | printf_filtered (_("done.\n")); |
c906108c SS |
2975 | } |
2976 | } | |
2977 | } | |
2978 | ||
10b3939b DJ |
2979 | /* Add PER_CU to the queue. */ |
2980 | ||
2981 | static void | |
03dd20cc | 2982 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b DJ |
2983 | { |
2984 | struct dwarf2_queue_item *item; | |
2985 | ||
2986 | per_cu->queued = 1; | |
2987 | item = xmalloc (sizeof (*item)); | |
2988 | item->per_cu = per_cu; | |
2989 | item->next = NULL; | |
2990 | ||
2991 | if (dwarf2_queue == NULL) | |
2992 | dwarf2_queue = item; | |
2993 | else | |
2994 | dwarf2_queue_tail->next = item; | |
2995 | ||
2996 | dwarf2_queue_tail = item; | |
2997 | } | |
2998 | ||
2999 | /* Process the queue. */ | |
3000 | ||
3001 | static void | |
3002 | process_queue (struct objfile *objfile) | |
3003 | { | |
3004 | struct dwarf2_queue_item *item, *next_item; | |
3005 | ||
03dd20cc DJ |
3006 | /* The queue starts out with one item, but following a DIE reference |
3007 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
3008 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
3009 | { | |
31ffec48 | 3010 | if (item->per_cu->psymtab && !item->per_cu->psymtab->readin) |
10b3939b DJ |
3011 | process_full_comp_unit (item->per_cu); |
3012 | ||
3013 | item->per_cu->queued = 0; | |
3014 | next_item = item->next; | |
3015 | xfree (item); | |
3016 | } | |
3017 | ||
3018 | dwarf2_queue_tail = NULL; | |
3019 | } | |
3020 | ||
3021 | /* Free all allocated queue entries. This function only releases anything if | |
3022 | an error was thrown; if the queue was processed then it would have been | |
3023 | freed as we went along. */ | |
3024 | ||
3025 | static void | |
3026 | dwarf2_release_queue (void *dummy) | |
3027 | { | |
3028 | struct dwarf2_queue_item *item, *last; | |
3029 | ||
3030 | item = dwarf2_queue; | |
3031 | while (item) | |
3032 | { | |
3033 | /* Anything still marked queued is likely to be in an | |
3034 | inconsistent state, so discard it. */ | |
3035 | if (item->per_cu->queued) | |
3036 | { | |
3037 | if (item->per_cu->cu != NULL) | |
3038 | free_one_cached_comp_unit (item->per_cu->cu); | |
3039 | item->per_cu->queued = 0; | |
3040 | } | |
3041 | ||
3042 | last = item; | |
3043 | item = item->next; | |
3044 | xfree (last); | |
3045 | } | |
3046 | ||
3047 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
3048 | } | |
3049 | ||
3050 | /* Read in full symbols for PST, and anything it depends on. */ | |
3051 | ||
c906108c | 3052 | static void |
fba45db2 | 3053 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 3054 | { |
10b3939b | 3055 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 3056 | struct cleanup *back_to; |
aaa75496 JB |
3057 | int i; |
3058 | ||
3059 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3060 | if (!pst->dependencies[i]->readin) | |
3061 | { | |
3062 | /* Inform about additional files that need to be read in. */ | |
3063 | if (info_verbose) | |
3064 | { | |
a3f17187 | 3065 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
3066 | fputs_filtered (" ", gdb_stdout); |
3067 | wrap_here (""); | |
3068 | fputs_filtered ("and ", gdb_stdout); | |
3069 | wrap_here (""); | |
3070 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
3071 | wrap_here (""); /* Flush output */ | |
3072 | gdb_flush (gdb_stdout); | |
3073 | } | |
3074 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
3075 | } | |
3076 | ||
e38df1d0 | 3077 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
3078 | |
3079 | if (per_cu == NULL) | |
aaa75496 JB |
3080 | { |
3081 | /* It's an include file, no symbols to read for it. | |
3082 | Everything is in the parent symtab. */ | |
3083 | pst->readin = 1; | |
3084 | return; | |
3085 | } | |
c906108c | 3086 | |
10b3939b DJ |
3087 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
3088 | ||
03dd20cc | 3089 | queue_comp_unit (per_cu, pst->objfile); |
10b3939b | 3090 | |
348e048f DE |
3091 | if (per_cu->from_debug_types) |
3092 | read_signatured_type_at_offset (pst->objfile, per_cu->offset); | |
3093 | else | |
3094 | load_full_comp_unit (per_cu, pst->objfile); | |
3095 | ||
10b3939b DJ |
3096 | process_queue (pst->objfile); |
3097 | ||
3098 | /* Age the cache, releasing compilation units that have not | |
3099 | been used recently. */ | |
3100 | age_cached_comp_units (); | |
3101 | ||
3102 | do_cleanups (back_to); | |
3103 | } | |
3104 | ||
93311388 | 3105 | /* Load the DIEs associated with PER_CU into memory. */ |
10b3939b | 3106 | |
93311388 | 3107 | static void |
31ffec48 | 3108 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 3109 | { |
31ffec48 | 3110 | bfd *abfd = objfile->obfd; |
10b3939b | 3111 | struct dwarf2_cu *cu; |
c764a876 | 3112 | unsigned int offset; |
93311388 | 3113 | gdb_byte *info_ptr, *beg_of_comp_unit; |
10b3939b DJ |
3114 | struct cleanup *back_to, *free_cu_cleanup; |
3115 | struct attribute *attr; | |
3116 | CORE_ADDR baseaddr; | |
6502dd73 | 3117 | |
348e048f DE |
3118 | gdb_assert (! per_cu->from_debug_types); |
3119 | ||
c906108c | 3120 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 3121 | offset = per_cu->offset; |
6502dd73 | 3122 | |
be391dca | 3123 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
dce234bc | 3124 | info_ptr = dwarf2_per_objfile->info.buffer + offset; |
93311388 | 3125 | beg_of_comp_unit = info_ptr; |
63d06c5c | 3126 | |
93311388 | 3127 | cu = alloc_one_comp_unit (objfile); |
c906108c | 3128 | |
10b3939b DJ |
3129 | /* If an error occurs while loading, release our storage. */ |
3130 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 3131 | |
93311388 | 3132 | /* Read in the comp_unit header. */ |
10b3939b | 3133 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c | 3134 | |
93311388 DE |
3135 | /* Complete the cu_header. */ |
3136 | cu->header.offset = offset; | |
3137 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
3138 | ||
3139 | /* Read the abbrevs for this compilation unit. */ | |
10b3939b DJ |
3140 | dwarf2_read_abbrevs (abfd, cu); |
3141 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
3142 | ||
93311388 | 3143 | /* Link this compilation unit into the compilation unit tree. */ |
10b3939b | 3144 | per_cu->cu = cu; |
93311388 | 3145 | cu->per_cu = per_cu; |
f792889a | 3146 | cu->type_hash = per_cu->type_hash; |
e142c38c | 3147 | |
93311388 | 3148 | cu->dies = read_comp_unit (info_ptr, cu); |
10b3939b DJ |
3149 | |
3150 | /* We try not to read any attributes in this function, because not | |
3151 | all objfiles needed for references have been loaded yet, and symbol | |
3152 | table processing isn't initialized. But we have to set the CU language, | |
3153 | or we won't be able to build types correctly. */ | |
3154 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
3155 | if (attr) | |
3156 | set_cu_language (DW_UNSND (attr), cu); | |
3157 | else | |
3158 | set_cu_language (language_minimal, cu); | |
3159 | ||
348e048f DE |
3160 | /* Link this CU into read_in_chain. */ |
3161 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
3162 | dwarf2_per_objfile->read_in_chain = per_cu; | |
3163 | ||
10b3939b | 3164 | do_cleanups (back_to); |
e142c38c | 3165 | |
10b3939b DJ |
3166 | /* We've successfully allocated this compilation unit. Let our caller |
3167 | clean it up when finished with it. */ | |
3168 | discard_cleanups (free_cu_cleanup); | |
10b3939b DJ |
3169 | } |
3170 | ||
3171 | /* Generate full symbol information for PST and CU, whose DIEs have | |
3172 | already been loaded into memory. */ | |
3173 | ||
3174 | static void | |
3175 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
3176 | { | |
3177 | struct partial_symtab *pst = per_cu->psymtab; | |
3178 | struct dwarf2_cu *cu = per_cu->cu; | |
3179 | struct objfile *objfile = pst->objfile; | |
3180 | bfd *abfd = objfile->obfd; | |
3181 | CORE_ADDR lowpc, highpc; | |
3182 | struct symtab *symtab; | |
3183 | struct cleanup *back_to; | |
10b3939b DJ |
3184 | CORE_ADDR baseaddr; |
3185 | ||
3186 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3187 | ||
10b3939b DJ |
3188 | buildsym_init (); |
3189 | back_to = make_cleanup (really_free_pendings, NULL); | |
3190 | ||
3191 | cu->list_in_scope = &file_symbols; | |
c906108c | 3192 | |
d85a05f0 | 3193 | dwarf2_find_base_address (cu->dies, cu); |
0d53c4c4 | 3194 | |
c906108c | 3195 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 3196 | process_die (cu->dies, cu); |
c906108c | 3197 | |
fae299cd DC |
3198 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
3199 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
3200 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 3201 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 3202 | |
613e1657 | 3203 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3204 | |
3205 | /* Set symtab language to language from DW_AT_language. | |
3206 | If the compilation is from a C file generated by language preprocessors, | |
3207 | do not set the language if it was already deduced by start_subfile. */ | |
3208 | if (symtab != NULL | |
10b3939b | 3209 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 3210 | { |
10b3939b | 3211 | symtab->language = cu->language; |
c906108c SS |
3212 | } |
3213 | pst->symtab = symtab; | |
3214 | pst->readin = 1; | |
c906108c SS |
3215 | |
3216 | do_cleanups (back_to); | |
3217 | } | |
3218 | ||
3219 | /* Process a die and its children. */ | |
3220 | ||
3221 | static void | |
e7c27a73 | 3222 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
3223 | { |
3224 | switch (die->tag) | |
3225 | { | |
3226 | case DW_TAG_padding: | |
3227 | break; | |
3228 | case DW_TAG_compile_unit: | |
e7c27a73 | 3229 | read_file_scope (die, cu); |
c906108c | 3230 | break; |
348e048f DE |
3231 | case DW_TAG_type_unit: |
3232 | read_type_unit_scope (die, cu); | |
3233 | break; | |
c906108c | 3234 | case DW_TAG_subprogram: |
c906108c | 3235 | case DW_TAG_inlined_subroutine: |
edb3359d | 3236 | read_func_scope (die, cu); |
c906108c SS |
3237 | break; |
3238 | case DW_TAG_lexical_block: | |
14898363 L |
3239 | case DW_TAG_try_block: |
3240 | case DW_TAG_catch_block: | |
e7c27a73 | 3241 | read_lexical_block_scope (die, cu); |
c906108c SS |
3242 | break; |
3243 | case DW_TAG_class_type: | |
680b30c7 | 3244 | case DW_TAG_interface_type: |
c906108c SS |
3245 | case DW_TAG_structure_type: |
3246 | case DW_TAG_union_type: | |
134d01f1 | 3247 | process_structure_scope (die, cu); |
c906108c SS |
3248 | break; |
3249 | case DW_TAG_enumeration_type: | |
134d01f1 | 3250 | process_enumeration_scope (die, cu); |
c906108c | 3251 | break; |
134d01f1 | 3252 | |
f792889a DJ |
3253 | /* These dies have a type, but processing them does not create |
3254 | a symbol or recurse to process the children. Therefore we can | |
3255 | read them on-demand through read_type_die. */ | |
c906108c | 3256 | case DW_TAG_subroutine_type: |
72019c9c | 3257 | case DW_TAG_set_type: |
c906108c | 3258 | case DW_TAG_array_type: |
c906108c | 3259 | case DW_TAG_pointer_type: |
c906108c | 3260 | case DW_TAG_ptr_to_member_type: |
c906108c | 3261 | case DW_TAG_reference_type: |
c906108c | 3262 | case DW_TAG_string_type: |
c906108c | 3263 | break; |
134d01f1 | 3264 | |
c906108c | 3265 | case DW_TAG_base_type: |
a02abb62 | 3266 | case DW_TAG_subrange_type: |
cb249c71 | 3267 | case DW_TAG_typedef: |
134d01f1 DJ |
3268 | /* Add a typedef symbol for the type definition, if it has a |
3269 | DW_AT_name. */ | |
f792889a | 3270 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 3271 | break; |
c906108c | 3272 | case DW_TAG_common_block: |
e7c27a73 | 3273 | read_common_block (die, cu); |
c906108c SS |
3274 | break; |
3275 | case DW_TAG_common_inclusion: | |
3276 | break; | |
d9fa45fe | 3277 | case DW_TAG_namespace: |
63d06c5c | 3278 | processing_has_namespace_info = 1; |
e7c27a73 | 3279 | read_namespace (die, cu); |
d9fa45fe | 3280 | break; |
5d7cb8df JK |
3281 | case DW_TAG_module: |
3282 | read_module (die, cu); | |
3283 | break; | |
d9fa45fe DC |
3284 | case DW_TAG_imported_declaration: |
3285 | case DW_TAG_imported_module: | |
63d06c5c | 3286 | processing_has_namespace_info = 1; |
27aa8d6a SW |
3287 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
3288 | || cu->language != language_fortran)) | |
3289 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
3290 | dwarf_tag_name (die->tag)); | |
3291 | read_import_statement (die, cu); | |
d9fa45fe | 3292 | break; |
c906108c | 3293 | default: |
e7c27a73 | 3294 | new_symbol (die, NULL, cu); |
c906108c SS |
3295 | break; |
3296 | } | |
3297 | } | |
3298 | ||
94af9270 KS |
3299 | /* A helper function for dwarf2_compute_name which determines whether DIE |
3300 | needs to have the name of the scope prepended to the name listed in the | |
3301 | die. */ | |
3302 | ||
3303 | static int | |
3304 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
3305 | { | |
3306 | switch (die->tag) | |
3307 | { | |
3308 | case DW_TAG_namespace: | |
3309 | case DW_TAG_typedef: | |
3310 | case DW_TAG_class_type: | |
3311 | case DW_TAG_interface_type: | |
3312 | case DW_TAG_structure_type: | |
3313 | case DW_TAG_union_type: | |
3314 | case DW_TAG_enumeration_type: | |
3315 | case DW_TAG_enumerator: | |
3316 | case DW_TAG_subprogram: | |
3317 | case DW_TAG_member: | |
3318 | return 1; | |
3319 | ||
3320 | case DW_TAG_variable: | |
3321 | /* We only need to prefix "globally" visible variables. These include | |
3322 | any variable marked with DW_AT_external or any variable that | |
3323 | lives in a namespace. [Variables in anonymous namespaces | |
3324 | require prefixing, but they are not DW_AT_external.] */ | |
3325 | ||
3326 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
3327 | { | |
3328 | struct dwarf2_cu *spec_cu = cu; | |
3329 | return die_needs_namespace (die_specification (die, &spec_cu), | |
3330 | spec_cu); | |
3331 | } | |
3332 | ||
3333 | if (dwarf2_attr (die, DW_AT_external, cu) | |
3334 | || die->parent->tag == DW_TAG_namespace) | |
3335 | return 1; | |
3336 | ||
3337 | return 0; | |
3338 | ||
3339 | default: | |
3340 | return 0; | |
3341 | } | |
3342 | } | |
3343 | ||
3344 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, | |
3345 | compute the physname for the object, which include a method's | |
3346 | formal parameters (C++/Java) and return type (Java). | |
3347 | ||
af6b7be1 JB |
3348 | For Ada, return the DIE's linkage name rather than the fully qualified |
3349 | name. PHYSNAME is ignored.. | |
3350 | ||
94af9270 KS |
3351 | The result is allocated on the objfile_obstack and canonicalized. */ |
3352 | ||
3353 | static const char * | |
3354 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
3355 | int physname) | |
3356 | { | |
3357 | if (name == NULL) | |
3358 | name = dwarf2_name (die, cu); | |
3359 | ||
3360 | /* These are the only languages we know how to qualify names in. */ | |
3361 | if (name != NULL | |
3362 | && (cu->language == language_cplus || cu->language == language_java)) | |
3363 | { | |
3364 | if (die_needs_namespace (die, cu)) | |
3365 | { | |
3366 | long length; | |
3367 | char *prefix; | |
3368 | struct ui_file *buf; | |
3369 | ||
3370 | prefix = determine_prefix (die, cu); | |
3371 | buf = mem_fileopen (); | |
3372 | if (*prefix != '\0') | |
3373 | { | |
3374 | char *prefixed_name = typename_concat (NULL, prefix, name, cu); | |
3375 | fputs_unfiltered (prefixed_name, buf); | |
3376 | xfree (prefixed_name); | |
3377 | } | |
3378 | else | |
3379 | fputs_unfiltered (name ? name : "", buf); | |
3380 | ||
3381 | /* For Java and C++ methods, append formal parameter type | |
3382 | information, if PHYSNAME. */ | |
3383 | ||
3384 | if (physname && die->tag == DW_TAG_subprogram | |
3385 | && (cu->language == language_cplus | |
3386 | || cu->language == language_java)) | |
3387 | { | |
3388 | struct type *type = read_type_die (die, cu); | |
3389 | ||
3390 | c_type_print_args (type, buf, 0, cu->language); | |
3391 | ||
3392 | if (cu->language == language_java) | |
3393 | { | |
3394 | /* For java, we must append the return type to method | |
3395 | names. */ | |
3396 | if (die->tag == DW_TAG_subprogram) | |
3397 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
3398 | 0, 0); | |
3399 | } | |
3400 | else if (cu->language == language_cplus) | |
3401 | { | |
3402 | if (TYPE_NFIELDS (type) > 0 | |
3403 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
3404 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)))) | |
3405 | fputs_unfiltered (" const", buf); | |
3406 | } | |
3407 | } | |
3408 | ||
3409 | name = ui_file_obsavestring (buf, &cu->objfile->objfile_obstack, | |
3410 | &length); | |
3411 | ui_file_delete (buf); | |
3412 | ||
3413 | if (cu->language == language_cplus) | |
3414 | { | |
3415 | char *cname | |
3416 | = dwarf2_canonicalize_name (name, cu, | |
3417 | &cu->objfile->objfile_obstack); | |
3418 | if (cname != NULL) | |
3419 | name = cname; | |
3420 | } | |
3421 | } | |
3422 | } | |
af6b7be1 JB |
3423 | else if (cu->language == language_ada) |
3424 | { | |
3425 | /* For Ada unit, we prefer the linkage name over the name, as | |
3426 | the former contains the exported name, which the user expects | |
3427 | to be able to reference. Ideally, we want the user to be able | |
3428 | to reference this entity using either natural or linkage name, | |
3429 | but we haven't started looking at this enhancement yet. */ | |
3430 | struct attribute *attr; | |
3431 | ||
3432 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
3433 | if (attr && DW_STRING (attr)) | |
3434 | name = DW_STRING (attr); | |
3435 | } | |
94af9270 KS |
3436 | |
3437 | return name; | |
3438 | } | |
3439 | ||
0114d602 DJ |
3440 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
3441 | If scope qualifiers are appropriate they will be added. The result | |
3442 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
3443 | not have a name. NAME may either be from a previous call to |
3444 | dwarf2_name or NULL. | |
3445 | ||
3446 | The output string will be canonicalized (if C++/Java). */ | |
0114d602 DJ |
3447 | |
3448 | static const char * | |
94af9270 | 3449 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 3450 | { |
94af9270 KS |
3451 | return dwarf2_compute_name (name, die, cu, 0); |
3452 | } | |
0114d602 | 3453 | |
94af9270 KS |
3454 | /* Construct a physname for the given DIE in CU. NAME may either be |
3455 | from a previous call to dwarf2_name or NULL. The result will be | |
3456 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
3457 | name. | |
0114d602 | 3458 | |
94af9270 | 3459 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 3460 | |
94af9270 KS |
3461 | static const char * |
3462 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
3463 | { | |
3464 | return dwarf2_compute_name (name, die, cu, 1); | |
0114d602 DJ |
3465 | } |
3466 | ||
27aa8d6a SW |
3467 | /* Read the import statement specified by the given die and record it. */ |
3468 | ||
3469 | static void | |
3470 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
3471 | { | |
3472 | struct attribute *import_attr; | |
3473 | struct die_info *imported_die; | |
de4affc9 | 3474 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 3475 | const char *imported_name; |
794684b6 | 3476 | const char *imported_name_prefix; |
82856980 SW |
3477 | char *import_alias; |
3478 | ||
794684b6 SW |
3479 | const char *import_prefix; |
3480 | char *canonical_name; | |
27aa8d6a SW |
3481 | |
3482 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
3483 | if (import_attr == NULL) | |
3484 | { | |
3485 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
3486 | dwarf_tag_name (die->tag)); | |
3487 | return; | |
3488 | } | |
3489 | ||
de4affc9 CC |
3490 | imported_cu = cu; |
3491 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
3492 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
3493 | if (imported_name == NULL) |
3494 | { | |
3495 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
3496 | ||
3497 | The import in the following code: | |
3498 | namespace A | |
3499 | { | |
3500 | typedef int B; | |
3501 | } | |
3502 | ||
3503 | int main () | |
3504 | { | |
3505 | using A::B; | |
3506 | B b; | |
3507 | return b; | |
3508 | } | |
3509 | ||
3510 | ... | |
3511 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
3512 | <52> DW_AT_decl_file : 1 | |
3513 | <53> DW_AT_decl_line : 6 | |
3514 | <54> DW_AT_import : <0x75> | |
3515 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
3516 | <59> DW_AT_name : B | |
3517 | <5b> DW_AT_decl_file : 1 | |
3518 | <5c> DW_AT_decl_line : 2 | |
3519 | <5d> DW_AT_type : <0x6e> | |
3520 | ... | |
3521 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
3522 | <76> DW_AT_byte_size : 4 | |
3523 | <77> DW_AT_encoding : 5 (signed) | |
3524 | ||
3525 | imports the wrong die ( 0x75 instead of 0x58 ). | |
3526 | This case will be ignored until the gcc bug is fixed. */ | |
3527 | return; | |
3528 | } | |
3529 | ||
82856980 SW |
3530 | /* Figure out the local name after import. */ |
3531 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 3532 | |
794684b6 SW |
3533 | /* Figure out where the statement is being imported to. */ |
3534 | import_prefix = determine_prefix (die, cu); | |
3535 | ||
3536 | /* Figure out what the scope of the imported die is and prepend it | |
3537 | to the name of the imported die. */ | |
de4affc9 | 3538 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 SW |
3539 | |
3540 | if (strlen (imported_name_prefix) > 0) | |
3541 | { | |
82856980 SW |
3542 | canonical_name = alloca (strlen (imported_name_prefix) |
3543 | + 2 + strlen (imported_name) + 1); | |
794684b6 SW |
3544 | strcpy (canonical_name, imported_name_prefix); |
3545 | strcat (canonical_name, "::"); | |
3546 | strcat (canonical_name, imported_name); | |
3547 | } | |
3548 | else | |
3549 | { | |
3550 | canonical_name = alloca (strlen (imported_name) + 1); | |
3551 | strcpy (canonical_name, imported_name); | |
3552 | } | |
3553 | ||
c0cc3a76 SW |
3554 | cp_add_using_directive (import_prefix, |
3555 | canonical_name, | |
3556 | import_alias, | |
3557 | &cu->objfile->objfile_obstack); | |
27aa8d6a SW |
3558 | } |
3559 | ||
5fb290d7 | 3560 | static void |
e142c38c | 3561 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 3562 | { |
e142c38c | 3563 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
3564 | } |
3565 | ||
cb1df416 DJ |
3566 | static void |
3567 | free_cu_line_header (void *arg) | |
3568 | { | |
3569 | struct dwarf2_cu *cu = arg; | |
3570 | ||
3571 | free_line_header (cu->line_header); | |
3572 | cu->line_header = NULL; | |
3573 | } | |
3574 | ||
c906108c | 3575 | static void |
e7c27a73 | 3576 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3577 | { |
e7c27a73 DJ |
3578 | struct objfile *objfile = cu->objfile; |
3579 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 3580 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 3581 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
3582 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
3583 | struct attribute *attr; | |
e1024ff1 | 3584 | char *name = NULL; |
c906108c SS |
3585 | char *comp_dir = NULL; |
3586 | struct die_info *child_die; | |
3587 | bfd *abfd = objfile->obfd; | |
debd256d | 3588 | struct line_header *line_header = 0; |
e142c38c DJ |
3589 | CORE_ADDR baseaddr; |
3590 | ||
3591 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 3592 | |
fae299cd | 3593 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
3594 | |
3595 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
3596 | from finish_block. */ | |
2acceee2 | 3597 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
3598 | lowpc = highpc; |
3599 | lowpc += baseaddr; | |
3600 | highpc += baseaddr; | |
3601 | ||
39cbfefa DJ |
3602 | /* Find the filename. Do not use dwarf2_name here, since the filename |
3603 | is not a source language identifier. */ | |
e142c38c | 3604 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3605 | if (attr) |
3606 | { | |
3607 | name = DW_STRING (attr); | |
3608 | } | |
e1024ff1 | 3609 | |
e142c38c | 3610 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c | 3611 | if (attr) |
e1024ff1 DJ |
3612 | comp_dir = DW_STRING (attr); |
3613 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
c906108c | 3614 | { |
e1024ff1 DJ |
3615 | comp_dir = ldirname (name); |
3616 | if (comp_dir != NULL) | |
3617 | make_cleanup (xfree, comp_dir); | |
3618 | } | |
3619 | if (comp_dir != NULL) | |
3620 | { | |
3621 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
3622 | directory, get rid of it. */ | |
3623 | char *cp = strchr (comp_dir, ':'); | |
c906108c | 3624 | |
e1024ff1 DJ |
3625 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') |
3626 | comp_dir = cp + 1; | |
c906108c SS |
3627 | } |
3628 | ||
e1024ff1 DJ |
3629 | if (name == NULL) |
3630 | name = "<unknown>"; | |
3631 | ||
e142c38c | 3632 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
3633 | if (attr) |
3634 | { | |
e142c38c | 3635 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
3636 | } |
3637 | ||
b0f35d58 DL |
3638 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
3639 | if (attr) | |
3640 | cu->producer = DW_STRING (attr); | |
303b6f5d | 3641 | |
c906108c SS |
3642 | /* We assume that we're processing GCC output. */ |
3643 | processing_gcc_compilation = 2; | |
c906108c | 3644 | |
df8a16a1 DJ |
3645 | processing_has_namespace_info = 0; |
3646 | ||
c906108c SS |
3647 | start_symtab (name, comp_dir, lowpc); |
3648 | record_debugformat ("DWARF 2"); | |
303b6f5d | 3649 | record_producer (cu->producer); |
c906108c | 3650 | |
e142c38c | 3651 | initialize_cu_func_list (cu); |
c906108c | 3652 | |
cb1df416 DJ |
3653 | /* Decode line number information if present. We do this before |
3654 | processing child DIEs, so that the line header table is available | |
3655 | for DW_AT_decl_file. */ | |
e142c38c | 3656 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
3657 | if (attr) |
3658 | { | |
debd256d | 3659 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 3660 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
3661 | if (line_header) |
3662 | { | |
cb1df416 DJ |
3663 | cu->line_header = line_header; |
3664 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 3665 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 3666 | } |
5fb290d7 | 3667 | } |
debd256d | 3668 | |
cb1df416 DJ |
3669 | /* Process all dies in compilation unit. */ |
3670 | if (die->child != NULL) | |
3671 | { | |
3672 | child_die = die->child; | |
3673 | while (child_die && child_die->tag) | |
3674 | { | |
3675 | process_die (child_die, cu); | |
3676 | child_die = sibling_die (child_die); | |
3677 | } | |
3678 | } | |
3679 | ||
2e276125 JB |
3680 | /* Decode macro information, if present. Dwarf 2 macro information |
3681 | refers to information in the line number info statement program | |
3682 | header, so we can only read it if we've read the header | |
3683 | successfully. */ | |
e142c38c | 3684 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 3685 | if (attr && line_header) |
2e276125 JB |
3686 | { |
3687 | unsigned int macro_offset = DW_UNSND (attr); | |
3688 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 3689 | comp_dir, abfd, cu); |
2e276125 | 3690 | } |
debd256d | 3691 | do_cleanups (back_to); |
5fb290d7 DJ |
3692 | } |
3693 | ||
348e048f DE |
3694 | /* For TUs we want to skip the first top level sibling if it's not the |
3695 | actual type being defined by this TU. In this case the first top | |
3696 | level sibling is there to provide context only. */ | |
3697 | ||
3698 | static void | |
3699 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
3700 | { | |
3701 | struct objfile *objfile = cu->objfile; | |
3702 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
3703 | CORE_ADDR lowpc; | |
3704 | struct attribute *attr; | |
3705 | char *name = NULL; | |
3706 | char *comp_dir = NULL; | |
3707 | struct die_info *child_die; | |
3708 | bfd *abfd = objfile->obfd; | |
3709 | struct line_header *line_header = 0; | |
3710 | ||
3711 | /* start_symtab needs a low pc, but we don't really have one. | |
3712 | Do what read_file_scope would do in the absence of such info. */ | |
3713 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3714 | ||
3715 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
3716 | is not a source language identifier. */ | |
3717 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
3718 | if (attr) | |
3719 | name = DW_STRING (attr); | |
3720 | ||
3721 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
3722 | if (attr) | |
3723 | comp_dir = DW_STRING (attr); | |
3724 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
3725 | { | |
3726 | comp_dir = ldirname (name); | |
3727 | if (comp_dir != NULL) | |
3728 | make_cleanup (xfree, comp_dir); | |
3729 | } | |
3730 | ||
3731 | if (name == NULL) | |
3732 | name = "<unknown>"; | |
3733 | ||
3734 | attr = dwarf2_attr (die, DW_AT_language, cu); | |
3735 | if (attr) | |
3736 | set_cu_language (DW_UNSND (attr), cu); | |
3737 | ||
3738 | /* This isn't technically needed today. It is done for symmetry | |
3739 | with read_file_scope. */ | |
3740 | attr = dwarf2_attr (die, DW_AT_producer, cu); | |
3741 | if (attr) | |
3742 | cu->producer = DW_STRING (attr); | |
3743 | ||
3744 | /* We assume that we're processing GCC output. */ | |
3745 | processing_gcc_compilation = 2; | |
3746 | ||
3747 | processing_has_namespace_info = 0; | |
3748 | ||
3749 | start_symtab (name, comp_dir, lowpc); | |
3750 | record_debugformat ("DWARF 2"); | |
3751 | record_producer (cu->producer); | |
3752 | ||
3753 | /* Process the dies in the type unit. */ | |
3754 | if (die->child == NULL) | |
3755 | { | |
3756 | dump_die_for_error (die); | |
3757 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
3758 | bfd_get_filename (abfd)); | |
3759 | } | |
3760 | ||
3761 | child_die = die->child; | |
3762 | ||
3763 | while (child_die && child_die->tag) | |
3764 | { | |
3765 | process_die (child_die, cu); | |
3766 | ||
3767 | child_die = sibling_die (child_die); | |
3768 | } | |
3769 | ||
3770 | do_cleanups (back_to); | |
3771 | } | |
3772 | ||
5fb290d7 | 3773 | static void |
e142c38c DJ |
3774 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
3775 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
3776 | { |
3777 | struct function_range *thisfn; | |
3778 | ||
3779 | thisfn = (struct function_range *) | |
7b5a2f43 | 3780 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
3781 | thisfn->name = name; |
3782 | thisfn->lowpc = lowpc; | |
3783 | thisfn->highpc = highpc; | |
3784 | thisfn->seen_line = 0; | |
3785 | thisfn->next = NULL; | |
3786 | ||
e142c38c DJ |
3787 | if (cu->last_fn == NULL) |
3788 | cu->first_fn = thisfn; | |
5fb290d7 | 3789 | else |
e142c38c | 3790 | cu->last_fn->next = thisfn; |
5fb290d7 | 3791 | |
e142c38c | 3792 | cu->last_fn = thisfn; |
c906108c SS |
3793 | } |
3794 | ||
d389af10 JK |
3795 | /* qsort helper for inherit_abstract_dies. */ |
3796 | ||
3797 | static int | |
3798 | unsigned_int_compar (const void *ap, const void *bp) | |
3799 | { | |
3800 | unsigned int a = *(unsigned int *) ap; | |
3801 | unsigned int b = *(unsigned int *) bp; | |
3802 | ||
3803 | return (a > b) - (b > a); | |
3804 | } | |
3805 | ||
3806 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3807 | Inherit only the children of the DW_AT_abstract_origin DIE not being already | |
3808 | referenced by DW_AT_abstract_origin from the children of the current DIE. */ | |
3809 | ||
3810 | static void | |
3811 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
3812 | { | |
3813 | struct die_info *child_die; | |
3814 | unsigned die_children_count; | |
3815 | /* CU offsets which were referenced by children of the current DIE. */ | |
3816 | unsigned *offsets; | |
3817 | unsigned *offsets_end, *offsetp; | |
3818 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ | |
3819 | struct die_info *origin_die; | |
3820 | /* Iterator of the ORIGIN_DIE children. */ | |
3821 | struct die_info *origin_child_die; | |
3822 | struct cleanup *cleanups; | |
3823 | struct attribute *attr; | |
3824 | ||
3825 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
3826 | if (!attr) | |
3827 | return; | |
3828 | ||
3829 | origin_die = follow_die_ref (die, attr, &cu); | |
edb3359d DJ |
3830 | if (die->tag != origin_die->tag |
3831 | && !(die->tag == DW_TAG_inlined_subroutine | |
3832 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
3833 | complaint (&symfile_complaints, |
3834 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
3835 | die->offset, origin_die->offset); | |
3836 | ||
3837 | child_die = die->child; | |
3838 | die_children_count = 0; | |
3839 | while (child_die && child_die->tag) | |
3840 | { | |
3841 | child_die = sibling_die (child_die); | |
3842 | die_children_count++; | |
3843 | } | |
3844 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
3845 | cleanups = make_cleanup (xfree, offsets); | |
3846 | ||
3847 | offsets_end = offsets; | |
3848 | child_die = die->child; | |
3849 | while (child_die && child_die->tag) | |
3850 | { | |
c38f313d DJ |
3851 | /* For each CHILD_DIE, find the corresponding child of |
3852 | ORIGIN_DIE. If there is more than one layer of | |
3853 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
3854 | but GCC versions at least through 4.4 generate this (GCC PR | |
3855 | 40573). */ | |
3856 | struct die_info *child_origin_die = child_die; | |
3857 | while (1) | |
3858 | { | |
3859 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, cu); | |
3860 | if (attr == NULL) | |
3861 | break; | |
3862 | child_origin_die = follow_die_ref (child_origin_die, attr, &cu); | |
3863 | } | |
3864 | ||
d389af10 JK |
3865 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
3866 | counterpart may exist. */ | |
c38f313d | 3867 | if (child_origin_die != child_die) |
d389af10 | 3868 | { |
edb3359d DJ |
3869 | if (child_die->tag != child_origin_die->tag |
3870 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
3871 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
3872 | complaint (&symfile_complaints, |
3873 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
3874 | "different tags"), child_die->offset, | |
3875 | child_origin_die->offset); | |
c38f313d DJ |
3876 | if (child_origin_die->parent != origin_die) |
3877 | complaint (&symfile_complaints, | |
3878 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
3879 | "different parents"), child_die->offset, | |
3880 | child_origin_die->offset); | |
3881 | else | |
3882 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
3883 | } |
3884 | child_die = sibling_die (child_die); | |
3885 | } | |
3886 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
3887 | unsigned_int_compar); | |
3888 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
3889 | if (offsetp[-1] == *offsetp) | |
3890 | complaint (&symfile_complaints, _("Multiple children of DIE 0x%x refer " | |
3891 | "to DIE 0x%x as their abstract origin"), | |
3892 | die->offset, *offsetp); | |
3893 | ||
3894 | offsetp = offsets; | |
3895 | origin_child_die = origin_die->child; | |
3896 | while (origin_child_die && origin_child_die->tag) | |
3897 | { | |
3898 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
3899 | while (offsetp < offsets_end && *offsetp < origin_child_die->offset) | |
3900 | offsetp++; | |
3901 | if (offsetp >= offsets_end || *offsetp > origin_child_die->offset) | |
3902 | { | |
3903 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
3904 | process_die (origin_child_die, cu); | |
3905 | } | |
3906 | origin_child_die = sibling_die (origin_child_die); | |
3907 | } | |
3908 | ||
3909 | do_cleanups (cleanups); | |
3910 | } | |
3911 | ||
c906108c | 3912 | static void |
e7c27a73 | 3913 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3914 | { |
e7c27a73 | 3915 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 3916 | struct context_stack *new; |
c906108c SS |
3917 | CORE_ADDR lowpc; |
3918 | CORE_ADDR highpc; | |
3919 | struct die_info *child_die; | |
edb3359d | 3920 | struct attribute *attr, *call_line, *call_file; |
c906108c | 3921 | char *name; |
e142c38c | 3922 | CORE_ADDR baseaddr; |
801e3a5b | 3923 | struct block *block; |
edb3359d DJ |
3924 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
3925 | ||
3926 | if (inlined_func) | |
3927 | { | |
3928 | /* If we do not have call site information, we can't show the | |
3929 | caller of this inlined function. That's too confusing, so | |
3930 | only use the scope for local variables. */ | |
3931 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
3932 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
3933 | if (call_line == NULL || call_file == NULL) | |
3934 | { | |
3935 | read_lexical_block_scope (die, cu); | |
3936 | return; | |
3937 | } | |
3938 | } | |
c906108c | 3939 | |
e142c38c DJ |
3940 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
3941 | ||
94af9270 | 3942 | name = dwarf2_name (die, cu); |
c906108c SS |
3943 | |
3944 | /* Ignore functions with missing or empty names and functions with | |
3945 | missing or invalid low and high pc attributes. */ | |
d85a05f0 | 3946 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
3947 | return; |
3948 | ||
3949 | lowpc += baseaddr; | |
3950 | highpc += baseaddr; | |
3951 | ||
5fb290d7 | 3952 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 3953 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 3954 | |
c906108c | 3955 | new = push_context (0, lowpc); |
f792889a | 3956 | new->name = new_symbol (die, read_type_die (die, cu), cu); |
4c2df51b | 3957 | |
4cecd739 DJ |
3958 | /* If there is a location expression for DW_AT_frame_base, record |
3959 | it. */ | |
e142c38c | 3960 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 3961 | if (attr) |
c034e007 AC |
3962 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
3963 | expression is being recorded directly in the function's symbol | |
3964 | and not in a separate frame-base object. I guess this hack is | |
3965 | to avoid adding some sort of frame-base adjunct/annex to the | |
3966 | function's symbol :-(. The problem with doing this is that it | |
3967 | results in a function symbol with a location expression that | |
3968 | has nothing to do with the location of the function, ouch! The | |
3969 | relationship should be: a function's symbol has-a frame base; a | |
3970 | frame-base has-a location expression. */ | |
e7c27a73 | 3971 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 3972 | |
e142c38c | 3973 | cu->list_in_scope = &local_symbols; |
c906108c | 3974 | |
639d11d3 | 3975 | if (die->child != NULL) |
c906108c | 3976 | { |
639d11d3 | 3977 | child_die = die->child; |
c906108c SS |
3978 | while (child_die && child_die->tag) |
3979 | { | |
e7c27a73 | 3980 | process_die (child_die, cu); |
c906108c SS |
3981 | child_die = sibling_die (child_die); |
3982 | } | |
3983 | } | |
3984 | ||
d389af10 JK |
3985 | inherit_abstract_dies (die, cu); |
3986 | ||
c906108c SS |
3987 | new = pop_context (); |
3988 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
3989 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
3990 | lowpc, highpc, objfile); | |
3991 | ||
df8a16a1 DJ |
3992 | /* For C++, set the block's scope. */ |
3993 | if (cu->language == language_cplus) | |
3994 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, | |
0114d602 | 3995 | determine_prefix (die, cu), |
df8a16a1 DJ |
3996 | processing_has_namespace_info); |
3997 | ||
801e3a5b JB |
3998 | /* If we have address ranges, record them. */ |
3999 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
208d8187 JB |
4000 | |
4001 | /* In C++, we can have functions nested inside functions (e.g., when | |
4002 | a function declares a class that has methods). This means that | |
4003 | when we finish processing a function scope, we may need to go | |
4004 | back to building a containing block's symbol lists. */ | |
4005 | local_symbols = new->locals; | |
4006 | param_symbols = new->params; | |
27aa8d6a | 4007 | using_directives = new->using_directives; |
208d8187 | 4008 | |
921e78cf JB |
4009 | /* If we've finished processing a top-level function, subsequent |
4010 | symbols go in the file symbol list. */ | |
4011 | if (outermost_context_p ()) | |
e142c38c | 4012 | cu->list_in_scope = &file_symbols; |
c906108c SS |
4013 | } |
4014 | ||
4015 | /* Process all the DIES contained within a lexical block scope. Start | |
4016 | a new scope, process the dies, and then close the scope. */ | |
4017 | ||
4018 | static void | |
e7c27a73 | 4019 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4020 | { |
e7c27a73 | 4021 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 4022 | struct context_stack *new; |
c906108c SS |
4023 | CORE_ADDR lowpc, highpc; |
4024 | struct die_info *child_die; | |
e142c38c DJ |
4025 | CORE_ADDR baseaddr; |
4026 | ||
4027 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
4028 | |
4029 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
4030 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
4031 | as multiple lexical blocks? Handling children in a sane way would | |
4032 | be nasty. Might be easier to properly extend generic blocks to | |
4033 | describe ranges. */ | |
d85a05f0 | 4034 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
4035 | return; |
4036 | lowpc += baseaddr; | |
4037 | highpc += baseaddr; | |
4038 | ||
4039 | push_context (0, lowpc); | |
639d11d3 | 4040 | if (die->child != NULL) |
c906108c | 4041 | { |
639d11d3 | 4042 | child_die = die->child; |
c906108c SS |
4043 | while (child_die && child_die->tag) |
4044 | { | |
e7c27a73 | 4045 | process_die (child_die, cu); |
c906108c SS |
4046 | child_die = sibling_die (child_die); |
4047 | } | |
4048 | } | |
4049 | new = pop_context (); | |
4050 | ||
8540c487 | 4051 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 4052 | { |
801e3a5b JB |
4053 | struct block *block |
4054 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
4055 | highpc, objfile); | |
4056 | ||
4057 | /* Note that recording ranges after traversing children, as we | |
4058 | do here, means that recording a parent's ranges entails | |
4059 | walking across all its children's ranges as they appear in | |
4060 | the address map, which is quadratic behavior. | |
4061 | ||
4062 | It would be nicer to record the parent's ranges before | |
4063 | traversing its children, simply overriding whatever you find | |
4064 | there. But since we don't even decide whether to create a | |
4065 | block until after we've traversed its children, that's hard | |
4066 | to do. */ | |
4067 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
4068 | } |
4069 | local_symbols = new->locals; | |
27aa8d6a | 4070 | using_directives = new->using_directives; |
c906108c SS |
4071 | } |
4072 | ||
43039443 | 4073 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
4074 | Return 1 if the attributes are present and valid, otherwise, return 0. |
4075 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
4076 | |
4077 | static int | |
4078 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
4079 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
4080 | struct partial_symtab *ranges_pst) | |
43039443 JK |
4081 | { |
4082 | struct objfile *objfile = cu->objfile; | |
4083 | struct comp_unit_head *cu_header = &cu->header; | |
4084 | bfd *obfd = objfile->obfd; | |
4085 | unsigned int addr_size = cu_header->addr_size; | |
4086 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
4087 | /* Base address selection entry. */ | |
4088 | CORE_ADDR base; | |
4089 | int found_base; | |
4090 | unsigned int dummy; | |
4091 | gdb_byte *buffer; | |
4092 | CORE_ADDR marker; | |
4093 | int low_set; | |
4094 | CORE_ADDR low = 0; | |
4095 | CORE_ADDR high = 0; | |
ff013f42 | 4096 | CORE_ADDR baseaddr; |
43039443 | 4097 | |
d00adf39 DE |
4098 | found_base = cu->base_known; |
4099 | base = cu->base_address; | |
43039443 | 4100 | |
be391dca | 4101 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 4102 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
4103 | { |
4104 | complaint (&symfile_complaints, | |
4105 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
4106 | offset); | |
4107 | return 0; | |
4108 | } | |
dce234bc | 4109 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
4110 | |
4111 | /* Read in the largest possible address. */ | |
4112 | marker = read_address (obfd, buffer, cu, &dummy); | |
4113 | if ((marker & mask) == mask) | |
4114 | { | |
4115 | /* If we found the largest possible address, then | |
4116 | read the base address. */ | |
4117 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
4118 | buffer += 2 * addr_size; | |
4119 | offset += 2 * addr_size; | |
4120 | found_base = 1; | |
4121 | } | |
4122 | ||
4123 | low_set = 0; | |
4124 | ||
e7030f15 | 4125 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 4126 | |
43039443 JK |
4127 | while (1) |
4128 | { | |
4129 | CORE_ADDR range_beginning, range_end; | |
4130 | ||
4131 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
4132 | buffer += addr_size; | |
4133 | range_end = read_address (obfd, buffer, cu, &dummy); | |
4134 | buffer += addr_size; | |
4135 | offset += 2 * addr_size; | |
4136 | ||
4137 | /* An end of list marker is a pair of zero addresses. */ | |
4138 | if (range_beginning == 0 && range_end == 0) | |
4139 | /* Found the end of list entry. */ | |
4140 | break; | |
4141 | ||
4142 | /* Each base address selection entry is a pair of 2 values. | |
4143 | The first is the largest possible address, the second is | |
4144 | the base address. Check for a base address here. */ | |
4145 | if ((range_beginning & mask) == mask) | |
4146 | { | |
4147 | /* If we found the largest possible address, then | |
4148 | read the base address. */ | |
4149 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
4150 | found_base = 1; | |
4151 | continue; | |
4152 | } | |
4153 | ||
4154 | if (!found_base) | |
4155 | { | |
4156 | /* We have no valid base address for the ranges | |
4157 | data. */ | |
4158 | complaint (&symfile_complaints, | |
4159 | _("Invalid .debug_ranges data (no base address)")); | |
4160 | return 0; | |
4161 | } | |
4162 | ||
4163 | range_beginning += base; | |
4164 | range_end += base; | |
4165 | ||
ff013f42 JK |
4166 | if (ranges_pst != NULL && range_beginning < range_end) |
4167 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
4168 | range_beginning + baseaddr, range_end - 1 + baseaddr, | |
4169 | ranges_pst); | |
4170 | ||
43039443 JK |
4171 | /* FIXME: This is recording everything as a low-high |
4172 | segment of consecutive addresses. We should have a | |
4173 | data structure for discontiguous block ranges | |
4174 | instead. */ | |
4175 | if (! low_set) | |
4176 | { | |
4177 | low = range_beginning; | |
4178 | high = range_end; | |
4179 | low_set = 1; | |
4180 | } | |
4181 | else | |
4182 | { | |
4183 | if (range_beginning < low) | |
4184 | low = range_beginning; | |
4185 | if (range_end > high) | |
4186 | high = range_end; | |
4187 | } | |
4188 | } | |
4189 | ||
4190 | if (! low_set) | |
4191 | /* If the first entry is an end-of-list marker, the range | |
4192 | describes an empty scope, i.e. no instructions. */ | |
4193 | return 0; | |
4194 | ||
4195 | if (low_return) | |
4196 | *low_return = low; | |
4197 | if (high_return) | |
4198 | *high_return = high; | |
4199 | return 1; | |
4200 | } | |
4201 | ||
af34e669 DJ |
4202 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
4203 | are present and valid, otherwise, return 0. Return -1 if the range is | |
4204 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 4205 | static int |
af34e669 | 4206 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
4207 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
4208 | struct partial_symtab *pst) | |
c906108c SS |
4209 | { |
4210 | struct attribute *attr; | |
af34e669 DJ |
4211 | CORE_ADDR low = 0; |
4212 | CORE_ADDR high = 0; | |
4213 | int ret = 0; | |
c906108c | 4214 | |
e142c38c | 4215 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 4216 | if (attr) |
af34e669 DJ |
4217 | { |
4218 | high = DW_ADDR (attr); | |
e142c38c | 4219 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
4220 | if (attr) |
4221 | low = DW_ADDR (attr); | |
4222 | else | |
4223 | /* Found high w/o low attribute. */ | |
4224 | return 0; | |
4225 | ||
4226 | /* Found consecutive range of addresses. */ | |
4227 | ret = 1; | |
4228 | } | |
c906108c | 4229 | else |
af34e669 | 4230 | { |
e142c38c | 4231 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
4232 | if (attr != NULL) |
4233 | { | |
af34e669 | 4234 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 4235 | .debug_ranges section. */ |
d85a05f0 | 4236 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 4237 | return 0; |
43039443 | 4238 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
4239 | ret = -1; |
4240 | } | |
4241 | } | |
c906108c SS |
4242 | |
4243 | if (high < low) | |
4244 | return 0; | |
4245 | ||
4246 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
4247 | eliminate duplicate copies of functions and vtables and such. | |
4248 | The linker will arbitrarily choose one and discard the others. | |
4249 | The AT_*_pc values for such functions refer to local labels in | |
4250 | these sections. If the section from that file was discarded, the | |
4251 | labels are not in the output, so the relocs get a value of 0. | |
4252 | If this is a discarded function, mark the pc bounds as invalid, | |
4253 | so that GDB will ignore it. */ | |
72dca2f5 | 4254 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
4255 | return 0; |
4256 | ||
4257 | *lowpc = low; | |
4258 | *highpc = high; | |
af34e669 | 4259 | return ret; |
c906108c SS |
4260 | } |
4261 | ||
b084d499 JB |
4262 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
4263 | its low and high PC addresses. Do nothing if these addresses could not | |
4264 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
4265 | and HIGHPC to the high address if greater than HIGHPC. */ | |
4266 | ||
4267 | static void | |
4268 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
4269 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
4270 | struct dwarf2_cu *cu) | |
4271 | { | |
4272 | CORE_ADDR low, high; | |
4273 | struct die_info *child = die->child; | |
4274 | ||
d85a05f0 | 4275 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
4276 | { |
4277 | *lowpc = min (*lowpc, low); | |
4278 | *highpc = max (*highpc, high); | |
4279 | } | |
4280 | ||
4281 | /* If the language does not allow nested subprograms (either inside | |
4282 | subprograms or lexical blocks), we're done. */ | |
4283 | if (cu->language != language_ada) | |
4284 | return; | |
4285 | ||
4286 | /* Check all the children of the given DIE. If it contains nested | |
4287 | subprograms, then check their pc bounds. Likewise, we need to | |
4288 | check lexical blocks as well, as they may also contain subprogram | |
4289 | definitions. */ | |
4290 | while (child && child->tag) | |
4291 | { | |
4292 | if (child->tag == DW_TAG_subprogram | |
4293 | || child->tag == DW_TAG_lexical_block) | |
4294 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
4295 | child = sibling_die (child); | |
4296 | } | |
4297 | } | |
4298 | ||
fae299cd DC |
4299 | /* Get the low and high pc's represented by the scope DIE, and store |
4300 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
4301 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
4302 | ||
4303 | static void | |
4304 | get_scope_pc_bounds (struct die_info *die, | |
4305 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
4306 | struct dwarf2_cu *cu) | |
4307 | { | |
4308 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
4309 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
4310 | CORE_ADDR current_low, current_high; | |
4311 | ||
d85a05f0 | 4312 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
4313 | { |
4314 | best_low = current_low; | |
4315 | best_high = current_high; | |
4316 | } | |
4317 | else | |
4318 | { | |
4319 | struct die_info *child = die->child; | |
4320 | ||
4321 | while (child && child->tag) | |
4322 | { | |
4323 | switch (child->tag) { | |
4324 | case DW_TAG_subprogram: | |
b084d499 | 4325 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
4326 | break; |
4327 | case DW_TAG_namespace: | |
4328 | /* FIXME: carlton/2004-01-16: Should we do this for | |
4329 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
4330 | that current GCC's always emit the DIEs corresponding | |
4331 | to definitions of methods of classes as children of a | |
4332 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
4333 | the DIEs giving the declarations, which could be | |
4334 | anywhere). But I don't see any reason why the | |
4335 | standards says that they have to be there. */ | |
4336 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
4337 | ||
4338 | if (current_low != ((CORE_ADDR) -1)) | |
4339 | { | |
4340 | best_low = min (best_low, current_low); | |
4341 | best_high = max (best_high, current_high); | |
4342 | } | |
4343 | break; | |
4344 | default: | |
4345 | /* Ignore. */ | |
4346 | break; | |
4347 | } | |
4348 | ||
4349 | child = sibling_die (child); | |
4350 | } | |
4351 | } | |
4352 | ||
4353 | *lowpc = best_low; | |
4354 | *highpc = best_high; | |
4355 | } | |
4356 | ||
801e3a5b JB |
4357 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
4358 | in DIE. */ | |
4359 | static void | |
4360 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
4361 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
4362 | { | |
4363 | struct attribute *attr; | |
4364 | ||
4365 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
4366 | if (attr) | |
4367 | { | |
4368 | CORE_ADDR high = DW_ADDR (attr); | |
4369 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
4370 | if (attr) | |
4371 | { | |
4372 | CORE_ADDR low = DW_ADDR (attr); | |
4373 | record_block_range (block, baseaddr + low, baseaddr + high - 1); | |
4374 | } | |
4375 | } | |
4376 | ||
4377 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
4378 | if (attr) | |
4379 | { | |
4380 | bfd *obfd = cu->objfile->obfd; | |
4381 | ||
4382 | /* The value of the DW_AT_ranges attribute is the offset of the | |
4383 | address range list in the .debug_ranges section. */ | |
4384 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 4385 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
4386 | |
4387 | /* For some target architectures, but not others, the | |
4388 | read_address function sign-extends the addresses it returns. | |
4389 | To recognize base address selection entries, we need a | |
4390 | mask. */ | |
4391 | unsigned int addr_size = cu->header.addr_size; | |
4392 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
4393 | ||
4394 | /* The base address, to which the next pair is relative. Note | |
4395 | that this 'base' is a DWARF concept: most entries in a range | |
4396 | list are relative, to reduce the number of relocs against the | |
4397 | debugging information. This is separate from this function's | |
4398 | 'baseaddr' argument, which GDB uses to relocate debugging | |
4399 | information from a shared library based on the address at | |
4400 | which the library was loaded. */ | |
d00adf39 DE |
4401 | CORE_ADDR base = cu->base_address; |
4402 | int base_known = cu->base_known; | |
801e3a5b | 4403 | |
be391dca | 4404 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 4405 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
4406 | { |
4407 | complaint (&symfile_complaints, | |
4408 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
4409 | offset); | |
4410 | return; | |
4411 | } | |
4412 | ||
4413 | for (;;) | |
4414 | { | |
4415 | unsigned int bytes_read; | |
4416 | CORE_ADDR start, end; | |
4417 | ||
4418 | start = read_address (obfd, buffer, cu, &bytes_read); | |
4419 | buffer += bytes_read; | |
4420 | end = read_address (obfd, buffer, cu, &bytes_read); | |
4421 | buffer += bytes_read; | |
4422 | ||
4423 | /* Did we find the end of the range list? */ | |
4424 | if (start == 0 && end == 0) | |
4425 | break; | |
4426 | ||
4427 | /* Did we find a base address selection entry? */ | |
4428 | else if ((start & base_select_mask) == base_select_mask) | |
4429 | { | |
4430 | base = end; | |
4431 | base_known = 1; | |
4432 | } | |
4433 | ||
4434 | /* We found an ordinary address range. */ | |
4435 | else | |
4436 | { | |
4437 | if (!base_known) | |
4438 | { | |
4439 | complaint (&symfile_complaints, | |
4440 | _("Invalid .debug_ranges data (no base address)")); | |
4441 | return; | |
4442 | } | |
4443 | ||
4444 | record_block_range (block, | |
4445 | baseaddr + base + start, | |
4446 | baseaddr + base + end - 1); | |
4447 | } | |
4448 | } | |
4449 | } | |
4450 | } | |
4451 | ||
c906108c SS |
4452 | /* Add an aggregate field to the field list. */ |
4453 | ||
4454 | static void | |
107d2387 | 4455 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
4456 | struct dwarf2_cu *cu) |
4457 | { | |
4458 | struct objfile *objfile = cu->objfile; | |
5e2b427d | 4459 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
4460 | struct nextfield *new_field; |
4461 | struct attribute *attr; | |
4462 | struct field *fp; | |
4463 | char *fieldname = ""; | |
4464 | ||
4465 | /* Allocate a new field list entry and link it in. */ | |
4466 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 4467 | make_cleanup (xfree, new_field); |
c906108c | 4468 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
4469 | |
4470 | if (die->tag == DW_TAG_inheritance) | |
4471 | { | |
4472 | new_field->next = fip->baseclasses; | |
4473 | fip->baseclasses = new_field; | |
4474 | } | |
4475 | else | |
4476 | { | |
4477 | new_field->next = fip->fields; | |
4478 | fip->fields = new_field; | |
4479 | } | |
c906108c SS |
4480 | fip->nfields++; |
4481 | ||
4482 | /* Handle accessibility and virtuality of field. | |
4483 | The default accessibility for members is public, the default | |
4484 | accessibility for inheritance is private. */ | |
4485 | if (die->tag != DW_TAG_inheritance) | |
4486 | new_field->accessibility = DW_ACCESS_public; | |
4487 | else | |
4488 | new_field->accessibility = DW_ACCESS_private; | |
4489 | new_field->virtuality = DW_VIRTUALITY_none; | |
4490 | ||
e142c38c | 4491 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
4492 | if (attr) |
4493 | new_field->accessibility = DW_UNSND (attr); | |
4494 | if (new_field->accessibility != DW_ACCESS_public) | |
4495 | fip->non_public_fields = 1; | |
e142c38c | 4496 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
4497 | if (attr) |
4498 | new_field->virtuality = DW_UNSND (attr); | |
4499 | ||
4500 | fp = &new_field->field; | |
a9a9bd0f | 4501 | |
e142c38c | 4502 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 4503 | { |
a9a9bd0f DC |
4504 | /* Data member other than a C++ static data member. */ |
4505 | ||
c906108c | 4506 | /* Get type of field. */ |
e7c27a73 | 4507 | fp->type = die_type (die, cu); |
c906108c | 4508 | |
d6a843b5 | 4509 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 4510 | |
c906108c | 4511 | /* Get bit size of field (zero if none). */ |
e142c38c | 4512 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
4513 | if (attr) |
4514 | { | |
4515 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
4516 | } | |
4517 | else | |
4518 | { | |
4519 | FIELD_BITSIZE (*fp) = 0; | |
4520 | } | |
4521 | ||
4522 | /* Get bit offset of field. */ | |
e142c38c | 4523 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
4524 | if (attr) |
4525 | { | |
d4b96c9a | 4526 | int byte_offset = 0; |
c6a0999f | 4527 | |
3690dd37 | 4528 | if (attr_form_is_section_offset (attr)) |
d4b96c9a | 4529 | dwarf2_complex_location_expr_complaint (); |
3690dd37 | 4530 | else if (attr_form_is_constant (attr)) |
c6a0999f | 4531 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
d4b96c9a | 4532 | else if (attr_form_is_block (attr)) |
c6a0999f | 4533 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
d4b96c9a JK |
4534 | else |
4535 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 4536 | |
d6a843b5 | 4537 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); |
c906108c | 4538 | } |
e142c38c | 4539 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
4540 | if (attr) |
4541 | { | |
5e2b427d | 4542 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
4543 | { |
4544 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
4545 | additional bit offset from the MSB of the containing |
4546 | anonymous object to the MSB of the field. We don't | |
4547 | have to do anything special since we don't need to | |
4548 | know the size of the anonymous object. */ | |
c906108c SS |
4549 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
4550 | } | |
4551 | else | |
4552 | { | |
4553 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
4554 | MSB of the anonymous object, subtract off the number of |
4555 | bits from the MSB of the field to the MSB of the | |
4556 | object, and then subtract off the number of bits of | |
4557 | the field itself. The result is the bit offset of | |
4558 | the LSB of the field. */ | |
c906108c SS |
4559 | int anonymous_size; |
4560 | int bit_offset = DW_UNSND (attr); | |
4561 | ||
e142c38c | 4562 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4563 | if (attr) |
4564 | { | |
4565 | /* The size of the anonymous object containing | |
4566 | the bit field is explicit, so use the | |
4567 | indicated size (in bytes). */ | |
4568 | anonymous_size = DW_UNSND (attr); | |
4569 | } | |
4570 | else | |
4571 | { | |
4572 | /* The size of the anonymous object containing | |
4573 | the bit field must be inferred from the type | |
4574 | attribute of the data member containing the | |
4575 | bit field. */ | |
4576 | anonymous_size = TYPE_LENGTH (fp->type); | |
4577 | } | |
4578 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
4579 | - bit_offset - FIELD_BITSIZE (*fp); | |
4580 | } | |
4581 | } | |
4582 | ||
4583 | /* Get name of field. */ | |
39cbfefa DJ |
4584 | fieldname = dwarf2_name (die, cu); |
4585 | if (fieldname == NULL) | |
4586 | fieldname = ""; | |
d8151005 DJ |
4587 | |
4588 | /* The name is already allocated along with this objfile, so we don't | |
4589 | need to duplicate it for the type. */ | |
4590 | fp->name = fieldname; | |
c906108c SS |
4591 | |
4592 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 4593 | pointer or virtual base class pointer) to private. */ |
e142c38c | 4594 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 4595 | { |
d48cc9dd | 4596 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
4597 | new_field->accessibility = DW_ACCESS_private; |
4598 | fip->non_public_fields = 1; | |
4599 | } | |
4600 | } | |
a9a9bd0f | 4601 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 4602 | { |
a9a9bd0f DC |
4603 | /* C++ static member. */ |
4604 | ||
4605 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
4606 | is a declaration, but all versions of G++ as of this writing | |
4607 | (so through at least 3.2.1) incorrectly generate | |
4608 | DW_TAG_variable tags. */ | |
4609 | ||
c906108c | 4610 | char *physname; |
c906108c | 4611 | |
a9a9bd0f | 4612 | /* Get name of field. */ |
39cbfefa DJ |
4613 | fieldname = dwarf2_name (die, cu); |
4614 | if (fieldname == NULL) | |
c906108c SS |
4615 | return; |
4616 | ||
2df3850c | 4617 | /* Get physical name. */ |
94af9270 | 4618 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c | 4619 | |
d8151005 DJ |
4620 | /* The name is already allocated along with this objfile, so we don't |
4621 | need to duplicate it for the type. */ | |
4622 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 4623 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 4624 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
4625 | } |
4626 | else if (die->tag == DW_TAG_inheritance) | |
4627 | { | |
4628 | /* C++ base class field. */ | |
e142c38c | 4629 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 4630 | if (attr) |
d4b96c9a JK |
4631 | { |
4632 | int byte_offset = 0; | |
4633 | ||
4634 | if (attr_form_is_section_offset (attr)) | |
4635 | dwarf2_complex_location_expr_complaint (); | |
4636 | else if (attr_form_is_constant (attr)) | |
4637 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
4638 | else if (attr_form_is_block (attr)) | |
4639 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
4640 | else | |
4641 | dwarf2_complex_location_expr_complaint (); | |
4642 | ||
4643 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); | |
4644 | } | |
c906108c | 4645 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 4646 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
4647 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
4648 | fip->nbaseclasses++; | |
4649 | } | |
4650 | } | |
4651 | ||
4652 | /* Create the vector of fields, and attach it to the type. */ | |
4653 | ||
4654 | static void | |
fba45db2 | 4655 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 4656 | struct dwarf2_cu *cu) |
c906108c SS |
4657 | { |
4658 | int nfields = fip->nfields; | |
4659 | ||
4660 | /* Record the field count, allocate space for the array of fields, | |
4661 | and create blank accessibility bitfields if necessary. */ | |
4662 | TYPE_NFIELDS (type) = nfields; | |
4663 | TYPE_FIELDS (type) = (struct field *) | |
4664 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
4665 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
4666 | ||
b4ba55a1 | 4667 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
4668 | { |
4669 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
4670 | ||
4671 | TYPE_FIELD_PRIVATE_BITS (type) = | |
4672 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
4673 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
4674 | ||
4675 | TYPE_FIELD_PROTECTED_BITS (type) = | |
4676 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
4677 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
4678 | ||
4679 | TYPE_FIELD_IGNORE_BITS (type) = | |
4680 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
4681 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
4682 | } | |
4683 | ||
4684 | /* If the type has baseclasses, allocate and clear a bit vector for | |
4685 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 4686 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
4687 | { |
4688 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 4689 | unsigned char *pointer; |
c906108c SS |
4690 | |
4691 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
4692 | pointer = TYPE_ALLOC (type, num_bytes); |
4693 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
4694 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
4695 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
4696 | } | |
4697 | ||
4698 | /* Copy the saved-up fields into the field vector. Start from the head | |
4699 | of the list, adding to the tail of the field array, so that they end | |
4700 | up in the same order in the array in which they were added to the list. */ | |
4701 | while (nfields-- > 0) | |
4702 | { | |
7d0ccb61 DJ |
4703 | struct nextfield *fieldp; |
4704 | ||
4705 | if (fip->fields) | |
4706 | { | |
4707 | fieldp = fip->fields; | |
4708 | fip->fields = fieldp->next; | |
4709 | } | |
4710 | else | |
4711 | { | |
4712 | fieldp = fip->baseclasses; | |
4713 | fip->baseclasses = fieldp->next; | |
4714 | } | |
4715 | ||
4716 | TYPE_FIELD (type, nfields) = fieldp->field; | |
4717 | switch (fieldp->accessibility) | |
c906108c | 4718 | { |
c5aa993b | 4719 | case DW_ACCESS_private: |
b4ba55a1 JB |
4720 | if (cu->language != language_ada) |
4721 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 4722 | break; |
c906108c | 4723 | |
c5aa993b | 4724 | case DW_ACCESS_protected: |
b4ba55a1 JB |
4725 | if (cu->language != language_ada) |
4726 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 4727 | break; |
c906108c | 4728 | |
c5aa993b JM |
4729 | case DW_ACCESS_public: |
4730 | break; | |
c906108c | 4731 | |
c5aa993b JM |
4732 | default: |
4733 | /* Unknown accessibility. Complain and treat it as public. */ | |
4734 | { | |
e2e0b3e5 | 4735 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 4736 | fieldp->accessibility); |
c5aa993b JM |
4737 | } |
4738 | break; | |
c906108c SS |
4739 | } |
4740 | if (nfields < fip->nbaseclasses) | |
4741 | { | |
7d0ccb61 | 4742 | switch (fieldp->virtuality) |
c906108c | 4743 | { |
c5aa993b JM |
4744 | case DW_VIRTUALITY_virtual: |
4745 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 JB |
4746 | if (cu->language == language_ada) |
4747 | error ("unexpected virtuality in component of Ada type"); | |
c5aa993b JM |
4748 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
4749 | break; | |
c906108c SS |
4750 | } |
4751 | } | |
c906108c SS |
4752 | } |
4753 | } | |
4754 | ||
c906108c SS |
4755 | /* Add a member function to the proper fieldlist. */ |
4756 | ||
4757 | static void | |
107d2387 | 4758 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 4759 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 4760 | { |
e7c27a73 | 4761 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4762 | struct attribute *attr; |
4763 | struct fnfieldlist *flp; | |
4764 | int i; | |
4765 | struct fn_field *fnp; | |
4766 | char *fieldname; | |
4767 | char *physname; | |
4768 | struct nextfnfield *new_fnfield; | |
f792889a | 4769 | struct type *this_type; |
c906108c | 4770 | |
b4ba55a1 JB |
4771 | if (cu->language == language_ada) |
4772 | error ("unexpected member function in Ada type"); | |
4773 | ||
2df3850c | 4774 | /* Get name of member function. */ |
39cbfefa DJ |
4775 | fieldname = dwarf2_name (die, cu); |
4776 | if (fieldname == NULL) | |
2df3850c | 4777 | return; |
c906108c | 4778 | |
2df3850c | 4779 | /* Get the mangled name. */ |
94af9270 | 4780 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c SS |
4781 | |
4782 | /* Look up member function name in fieldlist. */ | |
4783 | for (i = 0; i < fip->nfnfields; i++) | |
4784 | { | |
27bfe10e | 4785 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
4786 | break; |
4787 | } | |
4788 | ||
4789 | /* Create new list element if necessary. */ | |
4790 | if (i < fip->nfnfields) | |
4791 | flp = &fip->fnfieldlists[i]; | |
4792 | else | |
4793 | { | |
4794 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4795 | { | |
4796 | fip->fnfieldlists = (struct fnfieldlist *) | |
4797 | xrealloc (fip->fnfieldlists, | |
4798 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4799 | * sizeof (struct fnfieldlist)); |
c906108c | 4800 | if (fip->nfnfields == 0) |
c13c43fd | 4801 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
4802 | } |
4803 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
4804 | flp->name = fieldname; | |
4805 | flp->length = 0; | |
4806 | flp->head = NULL; | |
4807 | fip->nfnfields++; | |
4808 | } | |
4809 | ||
4810 | /* Create a new member function field and chain it to the field list | |
4811 | entry. */ | |
4812 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 4813 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
4814 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
4815 | new_fnfield->next = flp->head; | |
4816 | flp->head = new_fnfield; | |
4817 | flp->length++; | |
4818 | ||
4819 | /* Fill in the member function field info. */ | |
4820 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
4821 | /* The name is already allocated along with this objfile, so we don't |
4822 | need to duplicate it for the type. */ | |
4823 | fnp->physname = physname ? physname : ""; | |
c906108c | 4824 | fnp->type = alloc_type (objfile); |
f792889a DJ |
4825 | this_type = read_type_die (die, cu); |
4826 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 4827 | { |
f792889a | 4828 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 4829 | |
f792889a | 4830 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
4831 | of the method itself (TYPE_CODE_METHOD). */ |
4832 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
4833 | TYPE_TARGET_TYPE (this_type), |
4834 | TYPE_FIELDS (this_type), | |
4835 | TYPE_NFIELDS (this_type), | |
4836 | TYPE_VARARGS (this_type)); | |
c906108c SS |
4837 | |
4838 | /* Handle static member functions. | |
c5aa993b JM |
4839 | Dwarf2 has no clean way to discern C++ static and non-static |
4840 | member functions. G++ helps GDB by marking the first | |
4841 | parameter for non-static member functions (which is the | |
4842 | this pointer) as artificial. We obtain this information | |
4843 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 4844 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
4845 | fnp->voffset = VOFFSET_STATIC; |
4846 | } | |
4847 | else | |
e2e0b3e5 | 4848 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 4849 | physname); |
c906108c SS |
4850 | |
4851 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 4852 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 4853 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
4854 | |
4855 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
4856 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
4857 | ||
4858 | /* Get accessibility. */ | |
e142c38c | 4859 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
4860 | if (attr) |
4861 | { | |
4862 | switch (DW_UNSND (attr)) | |
4863 | { | |
c5aa993b JM |
4864 | case DW_ACCESS_private: |
4865 | fnp->is_private = 1; | |
4866 | break; | |
4867 | case DW_ACCESS_protected: | |
4868 | fnp->is_protected = 1; | |
4869 | break; | |
c906108c SS |
4870 | } |
4871 | } | |
4872 | ||
b02dede2 | 4873 | /* Check for artificial methods. */ |
e142c38c | 4874 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
4875 | if (attr && DW_UNSND (attr) != 0) |
4876 | fnp->is_artificial = 1; | |
4877 | ||
0d564a31 DJ |
4878 | /* Get index in virtual function table if it is a virtual member |
4879 | function. For GCC, this is an offset in the appropriate | |
4880 | virtual table, as specified by DW_AT_containing_type. For | |
4881 | everyone else, it is an expression to be evaluated relative | |
4882 | to the object address. */ | |
4883 | ||
e142c38c | 4884 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
0d564a31 | 4885 | if (attr && fnp->fcontext) |
8e19ed76 PS |
4886 | { |
4887 | /* Support the .debug_loc offsets */ | |
4888 | if (attr_form_is_block (attr)) | |
4889 | { | |
e7c27a73 | 4890 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 | 4891 | } |
3690dd37 | 4892 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 4893 | { |
4d3c2250 | 4894 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4895 | } |
4896 | else | |
4897 | { | |
4d3c2250 KB |
4898 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
4899 | fieldname); | |
8e19ed76 | 4900 | } |
0d564a31 DJ |
4901 | } |
4902 | else if (attr) | |
4903 | { | |
4904 | /* We only support trivial expressions here. This hack will work | |
ba950e4d | 4905 | for v3 classes, which always start with the vtable pointer. */ |
0d564a31 DJ |
4906 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0 |
4907 | && DW_BLOCK (attr)->data[0] == DW_OP_deref) | |
4908 | { | |
4909 | struct dwarf_block blk; | |
4910 | blk.size = DW_BLOCK (attr)->size - 1; | |
4911 | blk.data = DW_BLOCK (attr)->data + 1; | |
ba950e4d DJ |
4912 | fnp->voffset = decode_locdesc (&blk, cu); |
4913 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
4914 | dwarf2_complex_location_expr_complaint (); | |
4915 | else | |
4916 | fnp->voffset /= cu->header.addr_size; | |
0d564a31 DJ |
4917 | fnp->voffset += 2; |
4918 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
4919 | } | |
4920 | else | |
4921 | dwarf2_complex_location_expr_complaint (); | |
4922 | } | |
d48cc9dd DJ |
4923 | else |
4924 | { | |
4925 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
4926 | if (attr && DW_UNSND (attr)) | |
4927 | { | |
4928 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
4929 | complaint (&symfile_complaints, | |
4930 | _("Member function \"%s\" (offset %d) is virtual but the vtable offset is not specified"), | |
4931 | fieldname, die->offset); | |
4932 | TYPE_CPLUS_DYNAMIC (type) = 1; | |
4933 | } | |
4934 | } | |
c906108c SS |
4935 | } |
4936 | ||
4937 | /* Create the vector of member function fields, and attach it to the type. */ | |
4938 | ||
4939 | static void | |
fba45db2 | 4940 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 4941 | struct dwarf2_cu *cu) |
c906108c SS |
4942 | { |
4943 | struct fnfieldlist *flp; | |
4944 | int total_length = 0; | |
4945 | int i; | |
4946 | ||
b4ba55a1 JB |
4947 | if (cu->language == language_ada) |
4948 | error ("unexpected member functions in Ada type"); | |
4949 | ||
c906108c SS |
4950 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
4951 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
4952 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
4953 | ||
4954 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
4955 | { | |
4956 | struct nextfnfield *nfp = flp->head; | |
4957 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
4958 | int k; | |
4959 | ||
4960 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
4961 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
4962 | fn_flp->fn_fields = (struct fn_field *) | |
4963 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
4964 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 4965 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
4966 | |
4967 | total_length += flp->length; | |
4968 | } | |
4969 | ||
4970 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
4971 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
4972 | } | |
4973 | ||
1168df01 JB |
4974 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
4975 | language, zero otherwise. */ | |
4976 | static int | |
4977 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
4978 | { | |
4979 | static const char vptr[] = "_vptr"; | |
987504bb | 4980 | static const char vtable[] = "vtable"; |
1168df01 | 4981 | |
987504bb JJ |
4982 | /* Look for the C++ and Java forms of the vtable. */ |
4983 | if ((cu->language == language_java | |
4984 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
4985 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
4986 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
4987 | return 1; |
4988 | ||
4989 | return 0; | |
4990 | } | |
4991 | ||
c0dd20ea | 4992 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
4993 | functions, with the ABI-specified layout. If TYPE describes |
4994 | such a structure, smash it into a member function type. | |
61049d3b DJ |
4995 | |
4996 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
4997 | This is GCC PR debug/28767. */ | |
c0dd20ea | 4998 | |
0b92b5bb TT |
4999 | static void |
5000 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 5001 | { |
0b92b5bb | 5002 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
5003 | |
5004 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
5005 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
5006 | return; | |
c0dd20ea DJ |
5007 | |
5008 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
5009 | if (TYPE_FIELD_NAME (type, 0) == NULL |
5010 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
5011 | || TYPE_FIELD_NAME (type, 1) == NULL | |
5012 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
5013 | return; | |
c0dd20ea DJ |
5014 | |
5015 | /* Find the type of the method. */ | |
0b92b5bb | 5016 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
5017 | if (pfn_type == NULL |
5018 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
5019 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 5020 | return; |
c0dd20ea DJ |
5021 | |
5022 | /* Look for the "this" argument. */ | |
5023 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
5024 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 5025 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 5026 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 5027 | return; |
c0dd20ea DJ |
5028 | |
5029 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
5030 | new_type = alloc_type (objfile); |
5031 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
5032 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
5033 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 5034 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 5035 | } |
1168df01 | 5036 | |
c906108c SS |
5037 | /* Called when we find the DIE that starts a structure or union scope |
5038 | (definition) to process all dies that define the members of the | |
5039 | structure or union. | |
5040 | ||
5041 | NOTE: we need to call struct_type regardless of whether or not the | |
5042 | DIE has an at_name attribute, since it might be an anonymous | |
5043 | structure or union. This gets the type entered into our set of | |
5044 | user defined types. | |
5045 | ||
5046 | However, if the structure is incomplete (an opaque struct/union) | |
5047 | then suppress creating a symbol table entry for it since gdb only | |
5048 | wants to find the one with the complete definition. Note that if | |
5049 | it is complete, we just call new_symbol, which does it's own | |
5050 | checking about whether the struct/union is anonymous or not (and | |
5051 | suppresses creating a symbol table entry itself). */ | |
5052 | ||
f792889a | 5053 | static struct type * |
134d01f1 | 5054 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5055 | { |
e7c27a73 | 5056 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5057 | struct type *type; |
5058 | struct attribute *attr; | |
39cbfefa | 5059 | char *name; |
0114d602 | 5060 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c | 5061 | |
348e048f DE |
5062 | /* If the definition of this type lives in .debug_types, read that type. |
5063 | Don't follow DW_AT_specification though, that will take us back up | |
5064 | the chain and we want to go down. */ | |
5065 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
5066 | if (attr) | |
5067 | { | |
5068 | struct dwarf2_cu *type_cu = cu; | |
5069 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
5070 | /* We could just recurse on read_structure_type, but we need to call | |
5071 | get_die_type to ensure only one type for this DIE is created. | |
5072 | This is important, for example, because for c++ classes we need | |
5073 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
5074 | type = read_type_die (type_die, type_cu); | |
5075 | return set_die_type (die, type, cu); | |
5076 | } | |
5077 | ||
c0dd20ea | 5078 | type = alloc_type (objfile); |
c906108c | 5079 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 5080 | |
39cbfefa DJ |
5081 | name = dwarf2_name (die, cu); |
5082 | if (name != NULL) | |
c906108c | 5083 | { |
987504bb JJ |
5084 | if (cu->language == language_cplus |
5085 | || cu->language == language_java) | |
63d06c5c | 5086 | { |
94af9270 KS |
5087 | TYPE_TAG_NAME (type) = (char *) dwarf2_full_name (name, die, cu); |
5088 | if (die->tag == DW_TAG_structure_type | |
5089 | || die->tag == DW_TAG_class_type) | |
5090 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
5091 | } |
5092 | else | |
5093 | { | |
d8151005 DJ |
5094 | /* The name is already allocated along with this objfile, so |
5095 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
5096 | TYPE_TAG_NAME (type) = (char *) name; |
5097 | if (die->tag == DW_TAG_class_type) | |
5098 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 5099 | } |
c906108c SS |
5100 | } |
5101 | ||
5102 | if (die->tag == DW_TAG_structure_type) | |
5103 | { | |
5104 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
5105 | } | |
5106 | else if (die->tag == DW_TAG_union_type) | |
5107 | { | |
5108 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
5109 | } | |
5110 | else | |
5111 | { | |
c906108c SS |
5112 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
5113 | } | |
5114 | ||
0cc2414c TT |
5115 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
5116 | TYPE_DECLARED_CLASS (type) = 1; | |
5117 | ||
e142c38c | 5118 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
5119 | if (attr) |
5120 | { | |
5121 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
5122 | } | |
5123 | else | |
5124 | { | |
5125 | TYPE_LENGTH (type) = 0; | |
5126 | } | |
5127 | ||
876cecd0 | 5128 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 5129 | if (die_is_declaration (die, cu)) |
876cecd0 | 5130 | TYPE_STUB (type) = 1; |
dc718098 | 5131 | |
b4ba55a1 JB |
5132 | set_descriptive_type (type, die, cu); |
5133 | ||
c906108c SS |
5134 | /* We need to add the type field to the die immediately so we don't |
5135 | infinitely recurse when dealing with pointers to the structure | |
5136 | type within the structure itself. */ | |
1c379e20 | 5137 | set_die_type (die, type, cu); |
c906108c | 5138 | |
e142c38c | 5139 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
5140 | { |
5141 | struct field_info fi; | |
5142 | struct die_info *child_die; | |
c906108c SS |
5143 | |
5144 | memset (&fi, 0, sizeof (struct field_info)); | |
5145 | ||
639d11d3 | 5146 | child_die = die->child; |
c906108c SS |
5147 | |
5148 | while (child_die && child_die->tag) | |
5149 | { | |
a9a9bd0f DC |
5150 | if (child_die->tag == DW_TAG_member |
5151 | || child_die->tag == DW_TAG_variable) | |
c906108c | 5152 | { |
a9a9bd0f DC |
5153 | /* NOTE: carlton/2002-11-05: A C++ static data member |
5154 | should be a DW_TAG_member that is a declaration, but | |
5155 | all versions of G++ as of this writing (so through at | |
5156 | least 3.2.1) incorrectly generate DW_TAG_variable | |
5157 | tags for them instead. */ | |
e7c27a73 | 5158 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 5159 | } |
8713b1b1 | 5160 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
5161 | { |
5162 | /* C++ member function. */ | |
e7c27a73 | 5163 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
5164 | } |
5165 | else if (child_die->tag == DW_TAG_inheritance) | |
5166 | { | |
5167 | /* C++ base class field. */ | |
e7c27a73 | 5168 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 5169 | } |
c906108c SS |
5170 | child_die = sibling_die (child_die); |
5171 | } | |
5172 | ||
5173 | /* Attach fields and member functions to the type. */ | |
5174 | if (fi.nfields) | |
e7c27a73 | 5175 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
5176 | if (fi.nfnfields) |
5177 | { | |
e7c27a73 | 5178 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 5179 | |
c5aa993b | 5180 | /* Get the type which refers to the base class (possibly this |
c906108c | 5181 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
5182 | class from the DW_AT_containing_type attribute. This use of |
5183 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 5184 | |
e142c38c | 5185 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 5186 | { |
e7c27a73 | 5187 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
5188 | |
5189 | TYPE_VPTR_BASETYPE (type) = t; | |
5190 | if (type == t) | |
5191 | { | |
c906108c SS |
5192 | int i; |
5193 | ||
5194 | /* Our own class provides vtbl ptr. */ | |
5195 | for (i = TYPE_NFIELDS (t) - 1; | |
5196 | i >= TYPE_N_BASECLASSES (t); | |
5197 | --i) | |
5198 | { | |
5199 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
5200 | ||
1168df01 | 5201 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
5202 | { |
5203 | TYPE_VPTR_FIELDNO (type) = i; | |
5204 | break; | |
5205 | } | |
5206 | } | |
5207 | ||
5208 | /* Complain if virtual function table field not found. */ | |
5209 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 5210 | complaint (&symfile_complaints, |
e2e0b3e5 | 5211 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
5212 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
5213 | ""); | |
c906108c SS |
5214 | } |
5215 | else | |
5216 | { | |
5217 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
5218 | } | |
5219 | } | |
f6235d4c EZ |
5220 | else if (cu->producer |
5221 | && strncmp (cu->producer, | |
5222 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
5223 | { | |
5224 | /* The IBM XLC compiler does not provide direct indication | |
5225 | of the containing type, but the vtable pointer is | |
5226 | always named __vfp. */ | |
5227 | ||
5228 | int i; | |
5229 | ||
5230 | for (i = TYPE_NFIELDS (type) - 1; | |
5231 | i >= TYPE_N_BASECLASSES (type); | |
5232 | --i) | |
5233 | { | |
5234 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
5235 | { | |
5236 | TYPE_VPTR_FIELDNO (type) = i; | |
5237 | TYPE_VPTR_BASETYPE (type) = type; | |
5238 | break; | |
5239 | } | |
5240 | } | |
5241 | } | |
c906108c | 5242 | } |
c906108c | 5243 | } |
63d06c5c | 5244 | |
0b92b5bb TT |
5245 | quirk_gcc_member_function_pointer (type, cu->objfile); |
5246 | ||
0114d602 | 5247 | do_cleanups (back_to); |
f792889a | 5248 | return type; |
c906108c SS |
5249 | } |
5250 | ||
134d01f1 DJ |
5251 | static void |
5252 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
5253 | { | |
5254 | struct objfile *objfile = cu->objfile; | |
90aeadfc | 5255 | struct die_info *child_die = die->child; |
f792889a | 5256 | struct type *this_type; |
c906108c | 5257 | |
f792889a DJ |
5258 | this_type = get_die_type (die, cu); |
5259 | if (this_type == NULL) | |
5260 | this_type = read_structure_type (die, cu); | |
c906108c | 5261 | |
90aeadfc DC |
5262 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
5263 | snapshots) has been known to create a die giving a declaration | |
5264 | for a class that has, as a child, a die giving a definition for a | |
5265 | nested class. So we have to process our children even if the | |
5266 | current die is a declaration. Normally, of course, a declaration | |
5267 | won't have any children at all. */ | |
134d01f1 | 5268 | |
90aeadfc DC |
5269 | while (child_die != NULL && child_die->tag) |
5270 | { | |
5271 | if (child_die->tag == DW_TAG_member | |
5272 | || child_die->tag == DW_TAG_variable | |
5273 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 5274 | { |
90aeadfc | 5275 | /* Do nothing. */ |
134d01f1 | 5276 | } |
90aeadfc DC |
5277 | else |
5278 | process_die (child_die, cu); | |
134d01f1 | 5279 | |
90aeadfc | 5280 | child_die = sibling_die (child_die); |
134d01f1 DJ |
5281 | } |
5282 | ||
fa4028e9 JB |
5283 | /* Do not consider external references. According to the DWARF standard, |
5284 | these DIEs are identified by the fact that they have no byte_size | |
5285 | attribute, and a declaration attribute. */ | |
5286 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
5287 | || !die_is_declaration (die, cu)) | |
f792889a | 5288 | new_symbol (die, this_type, cu); |
134d01f1 DJ |
5289 | } |
5290 | ||
5291 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
5292 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 5293 | |
f792889a | 5294 | static struct type * |
134d01f1 | 5295 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5296 | { |
e7c27a73 | 5297 | struct objfile *objfile = cu->objfile; |
c906108c | 5298 | struct type *type; |
c906108c | 5299 | struct attribute *attr; |
0114d602 | 5300 | const char *name; |
134d01f1 | 5301 | |
348e048f DE |
5302 | /* If the definition of this type lives in .debug_types, read that type. |
5303 | Don't follow DW_AT_specification though, that will take us back up | |
5304 | the chain and we want to go down. */ | |
5305 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
5306 | if (attr) | |
5307 | { | |
5308 | struct dwarf2_cu *type_cu = cu; | |
5309 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
5310 | type = read_type_die (type_die, type_cu); | |
5311 | return set_die_type (die, type, cu); | |
5312 | } | |
5313 | ||
c906108c SS |
5314 | type = alloc_type (objfile); |
5315 | ||
5316 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 5317 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 5318 | if (name != NULL) |
0114d602 | 5319 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 5320 | |
e142c38c | 5321 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
5322 | if (attr) |
5323 | { | |
5324 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
5325 | } | |
5326 | else | |
5327 | { | |
5328 | TYPE_LENGTH (type) = 0; | |
5329 | } | |
5330 | ||
137033e9 JB |
5331 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
5332 | declared as private in the package spec, and then defined only | |
5333 | inside the package body. Such types are known as Taft Amendment | |
5334 | Types. When another package uses such a type, an incomplete DIE | |
5335 | may be generated by the compiler. */ | |
02eb380e | 5336 | if (die_is_declaration (die, cu)) |
876cecd0 | 5337 | TYPE_STUB (type) = 1; |
02eb380e | 5338 | |
f792889a | 5339 | return set_die_type (die, type, cu); |
134d01f1 DJ |
5340 | } |
5341 | ||
5342 | /* Given a pointer to a die which begins an enumeration, process all | |
5343 | the dies that define the members of the enumeration, and create the | |
5344 | symbol for the enumeration type. | |
5345 | ||
5346 | NOTE: We reverse the order of the element list. */ | |
5347 | ||
5348 | static void | |
5349 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
5350 | { | |
5351 | struct objfile *objfile = cu->objfile; | |
5352 | struct die_info *child_die; | |
5353 | struct field *fields; | |
134d01f1 DJ |
5354 | struct symbol *sym; |
5355 | int num_fields; | |
5356 | int unsigned_enum = 1; | |
39cbfefa | 5357 | char *name; |
f792889a | 5358 | struct type *this_type; |
134d01f1 | 5359 | |
c906108c SS |
5360 | num_fields = 0; |
5361 | fields = NULL; | |
f792889a DJ |
5362 | this_type = get_die_type (die, cu); |
5363 | if (this_type == NULL) | |
5364 | this_type = read_enumeration_type (die, cu); | |
639d11d3 | 5365 | if (die->child != NULL) |
c906108c | 5366 | { |
639d11d3 | 5367 | child_die = die->child; |
c906108c SS |
5368 | while (child_die && child_die->tag) |
5369 | { | |
5370 | if (child_die->tag != DW_TAG_enumerator) | |
5371 | { | |
e7c27a73 | 5372 | process_die (child_die, cu); |
c906108c SS |
5373 | } |
5374 | else | |
5375 | { | |
39cbfefa DJ |
5376 | name = dwarf2_name (child_die, cu); |
5377 | if (name) | |
c906108c | 5378 | { |
f792889a | 5379 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
5380 | if (SYMBOL_VALUE (sym) < 0) |
5381 | unsigned_enum = 0; | |
5382 | ||
5383 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
5384 | { | |
5385 | fields = (struct field *) | |
5386 | xrealloc (fields, | |
5387 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 5388 | * sizeof (struct field)); |
c906108c SS |
5389 | } |
5390 | ||
3567439c | 5391 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 5392 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 5393 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
5394 | FIELD_BITSIZE (fields[num_fields]) = 0; |
5395 | ||
5396 | num_fields++; | |
5397 | } | |
5398 | } | |
5399 | ||
5400 | child_die = sibling_die (child_die); | |
5401 | } | |
5402 | ||
5403 | if (num_fields) | |
5404 | { | |
f792889a DJ |
5405 | TYPE_NFIELDS (this_type) = num_fields; |
5406 | TYPE_FIELDS (this_type) = (struct field *) | |
5407 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
5408 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 5409 | sizeof (struct field) * num_fields); |
b8c9b27d | 5410 | xfree (fields); |
c906108c SS |
5411 | } |
5412 | if (unsigned_enum) | |
876cecd0 | 5413 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 5414 | } |
134d01f1 | 5415 | |
f792889a | 5416 | new_symbol (die, this_type, cu); |
c906108c SS |
5417 | } |
5418 | ||
5419 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
5420 | the DIE's type field. For now, this only handles one dimensional | |
5421 | arrays. */ | |
5422 | ||
f792889a | 5423 | static struct type * |
e7c27a73 | 5424 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5425 | { |
e7c27a73 | 5426 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5427 | struct die_info *child_die; |
5428 | struct type *type = NULL; | |
5429 | struct type *element_type, *range_type, *index_type; | |
5430 | struct type **range_types = NULL; | |
5431 | struct attribute *attr; | |
5432 | int ndim = 0; | |
5433 | struct cleanup *back_to; | |
39cbfefa | 5434 | char *name; |
c906108c | 5435 | |
e7c27a73 | 5436 | element_type = die_type (die, cu); |
c906108c SS |
5437 | |
5438 | /* Irix 6.2 native cc creates array types without children for | |
5439 | arrays with unspecified length. */ | |
639d11d3 | 5440 | if (die->child == NULL) |
c906108c | 5441 | { |
46bf5051 | 5442 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 5443 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
5444 | type = create_array_type (NULL, element_type, range_type); |
5445 | return set_die_type (die, type, cu); | |
c906108c SS |
5446 | } |
5447 | ||
5448 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 5449 | child_die = die->child; |
c906108c SS |
5450 | while (child_die && child_die->tag) |
5451 | { | |
5452 | if (child_die->tag == DW_TAG_subrange_type) | |
5453 | { | |
f792889a DJ |
5454 | struct type *child_type = read_type_die (child_die, cu); |
5455 | if (child_type != NULL) | |
a02abb62 JB |
5456 | { |
5457 | /* The range type was succesfully read. Save it for | |
5458 | the array type creation. */ | |
5459 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
5460 | { | |
5461 | range_types = (struct type **) | |
5462 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
5463 | * sizeof (struct type *)); | |
5464 | if (ndim == 0) | |
5465 | make_cleanup (free_current_contents, &range_types); | |
5466 | } | |
f792889a | 5467 | range_types[ndim++] = child_type; |
a02abb62 | 5468 | } |
c906108c SS |
5469 | } |
5470 | child_die = sibling_die (child_die); | |
5471 | } | |
5472 | ||
5473 | /* Dwarf2 dimensions are output from left to right, create the | |
5474 | necessary array types in backwards order. */ | |
7ca2d3a3 | 5475 | |
c906108c | 5476 | type = element_type; |
7ca2d3a3 DL |
5477 | |
5478 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
5479 | { | |
5480 | int i = 0; | |
5481 | while (i < ndim) | |
5482 | type = create_array_type (NULL, type, range_types[i++]); | |
5483 | } | |
5484 | else | |
5485 | { | |
5486 | while (ndim-- > 0) | |
5487 | type = create_array_type (NULL, type, range_types[ndim]); | |
5488 | } | |
c906108c | 5489 | |
f5f8a009 EZ |
5490 | /* Understand Dwarf2 support for vector types (like they occur on |
5491 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
5492 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
5493 | custom vendor extension. The main difference between a regular | |
5494 | array and the vector variant is that vectors are passed by value | |
5495 | to functions. */ | |
e142c38c | 5496 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 5497 | if (attr) |
ea37ba09 | 5498 | make_vector_type (type); |
f5f8a009 | 5499 | |
39cbfefa DJ |
5500 | name = dwarf2_name (die, cu); |
5501 | if (name) | |
5502 | TYPE_NAME (type) = name; | |
714e295e | 5503 | |
b4ba55a1 JB |
5504 | set_descriptive_type (type, die, cu); |
5505 | ||
c906108c SS |
5506 | do_cleanups (back_to); |
5507 | ||
5508 | /* Install the type in the die. */ | |
f792889a | 5509 | return set_die_type (die, type, cu); |
c906108c SS |
5510 | } |
5511 | ||
7ca2d3a3 DL |
5512 | static enum dwarf_array_dim_ordering |
5513 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
5514 | { | |
5515 | struct attribute *attr; | |
5516 | ||
5517 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
5518 | ||
5519 | if (attr) return DW_SND (attr); | |
5520 | ||
5521 | /* | |
5522 | GNU F77 is a special case, as at 08/2004 array type info is the | |
5523 | opposite order to the dwarf2 specification, but data is still | |
5524 | laid out as per normal fortran. | |
5525 | ||
5526 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
5527 | version checking. | |
5528 | */ | |
5529 | ||
905e0470 PM |
5530 | if (cu->language == language_fortran |
5531 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
5532 | { |
5533 | return DW_ORD_row_major; | |
5534 | } | |
5535 | ||
5536 | switch (cu->language_defn->la_array_ordering) | |
5537 | { | |
5538 | case array_column_major: | |
5539 | return DW_ORD_col_major; | |
5540 | case array_row_major: | |
5541 | default: | |
5542 | return DW_ORD_row_major; | |
5543 | }; | |
5544 | } | |
5545 | ||
72019c9c GM |
5546 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
5547 | the DIE's type field. */ | |
5548 | ||
f792889a | 5549 | static struct type * |
72019c9c GM |
5550 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
5551 | { | |
f792889a DJ |
5552 | struct type *set_type = create_set_type (NULL, die_type (die, cu)); |
5553 | ||
5554 | return set_die_type (die, set_type, cu); | |
72019c9c | 5555 | } |
7ca2d3a3 | 5556 | |
c906108c SS |
5557 | /* First cut: install each common block member as a global variable. */ |
5558 | ||
5559 | static void | |
e7c27a73 | 5560 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5561 | { |
5562 | struct die_info *child_die; | |
5563 | struct attribute *attr; | |
5564 | struct symbol *sym; | |
5565 | CORE_ADDR base = (CORE_ADDR) 0; | |
5566 | ||
e142c38c | 5567 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
5568 | if (attr) |
5569 | { | |
8e19ed76 PS |
5570 | /* Support the .debug_loc offsets */ |
5571 | if (attr_form_is_block (attr)) | |
5572 | { | |
e7c27a73 | 5573 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 5574 | } |
3690dd37 | 5575 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 5576 | { |
4d3c2250 | 5577 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5578 | } |
5579 | else | |
5580 | { | |
4d3c2250 KB |
5581 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
5582 | "common block member"); | |
8e19ed76 | 5583 | } |
c906108c | 5584 | } |
639d11d3 | 5585 | if (die->child != NULL) |
c906108c | 5586 | { |
639d11d3 | 5587 | child_die = die->child; |
c906108c SS |
5588 | while (child_die && child_die->tag) |
5589 | { | |
e7c27a73 | 5590 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 5591 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
5592 | if (attr) |
5593 | { | |
d4b96c9a JK |
5594 | CORE_ADDR byte_offset = 0; |
5595 | ||
5596 | if (attr_form_is_section_offset (attr)) | |
5597 | dwarf2_complex_location_expr_complaint (); | |
5598 | else if (attr_form_is_constant (attr)) | |
5599 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
5600 | else if (attr_form_is_block (attr)) | |
5601 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
5602 | else | |
5603 | dwarf2_complex_location_expr_complaint (); | |
5604 | ||
5605 | SYMBOL_VALUE_ADDRESS (sym) = base + byte_offset; | |
c906108c SS |
5606 | add_symbol_to_list (sym, &global_symbols); |
5607 | } | |
5608 | child_die = sibling_die (child_die); | |
5609 | } | |
5610 | } | |
5611 | } | |
5612 | ||
0114d602 | 5613 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 5614 | |
0114d602 DJ |
5615 | static struct type * |
5616 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 5617 | { |
e7c27a73 | 5618 | struct objfile *objfile = cu->objfile; |
0114d602 | 5619 | const char *previous_prefix, *name; |
9219021c | 5620 | int is_anonymous; |
0114d602 DJ |
5621 | struct type *type; |
5622 | ||
5623 | /* For extensions, reuse the type of the original namespace. */ | |
5624 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
5625 | { | |
5626 | struct die_info *ext_die; | |
5627 | struct dwarf2_cu *ext_cu = cu; | |
5628 | ext_die = dwarf2_extension (die, &ext_cu); | |
5629 | type = read_type_die (ext_die, ext_cu); | |
5630 | return set_die_type (die, type, cu); | |
5631 | } | |
9219021c | 5632 | |
e142c38c | 5633 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
5634 | |
5635 | /* Now build the name of the current namespace. */ | |
5636 | ||
0114d602 DJ |
5637 | previous_prefix = determine_prefix (die, cu); |
5638 | if (previous_prefix[0] != '\0') | |
5639 | name = typename_concat (&objfile->objfile_obstack, | |
5640 | previous_prefix, name, cu); | |
5641 | ||
5642 | /* Create the type. */ | |
5643 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
5644 | objfile); | |
5645 | TYPE_NAME (type) = (char *) name; | |
5646 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
5647 | ||
5648 | set_die_type (die, type, cu); | |
5649 | ||
5650 | return type; | |
5651 | } | |
5652 | ||
5653 | /* Read a C++ namespace. */ | |
5654 | ||
5655 | static void | |
5656 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
5657 | { | |
5658 | struct objfile *objfile = cu->objfile; | |
5659 | const char *name; | |
5660 | int is_anonymous; | |
9219021c | 5661 | |
5c4e30ca DC |
5662 | /* Add a symbol associated to this if we haven't seen the namespace |
5663 | before. Also, add a using directive if it's an anonymous | |
5664 | namespace. */ | |
9219021c | 5665 | |
f2f0e013 | 5666 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
5667 | { |
5668 | struct type *type; | |
5669 | ||
0114d602 | 5670 | type = read_type_die (die, cu); |
e7c27a73 | 5671 | new_symbol (die, type, cu); |
5c4e30ca | 5672 | |
0114d602 | 5673 | name = namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 5674 | if (is_anonymous) |
0114d602 DJ |
5675 | { |
5676 | const char *previous_prefix = determine_prefix (die, cu); | |
c0cc3a76 SW |
5677 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
5678 | &objfile->objfile_obstack); | |
0114d602 | 5679 | } |
5c4e30ca | 5680 | } |
9219021c | 5681 | |
639d11d3 | 5682 | if (die->child != NULL) |
d9fa45fe | 5683 | { |
639d11d3 | 5684 | struct die_info *child_die = die->child; |
d9fa45fe DC |
5685 | |
5686 | while (child_die && child_die->tag) | |
5687 | { | |
e7c27a73 | 5688 | process_die (child_die, cu); |
d9fa45fe DC |
5689 | child_die = sibling_die (child_die); |
5690 | } | |
5691 | } | |
38d518c9 EZ |
5692 | } |
5693 | ||
5d7cb8df JK |
5694 | /* Read a Fortran module. */ |
5695 | ||
5696 | static void | |
5697 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
5698 | { | |
5699 | struct die_info *child_die = die->child; | |
5700 | ||
5701 | /* FIXME: Support the separate Fortran module namespaces. */ | |
5702 | ||
5703 | while (child_die && child_die->tag) | |
5704 | { | |
5705 | process_die (child_die, cu); | |
5706 | child_die = sibling_die (child_die); | |
5707 | } | |
5708 | } | |
5709 | ||
38d518c9 EZ |
5710 | /* Return the name of the namespace represented by DIE. Set |
5711 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
5712 | namespace. */ | |
5713 | ||
5714 | static const char * | |
e142c38c | 5715 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
5716 | { |
5717 | struct die_info *current_die; | |
5718 | const char *name = NULL; | |
5719 | ||
5720 | /* Loop through the extensions until we find a name. */ | |
5721 | ||
5722 | for (current_die = die; | |
5723 | current_die != NULL; | |
f2f0e013 | 5724 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 5725 | { |
e142c38c | 5726 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
5727 | if (name != NULL) |
5728 | break; | |
5729 | } | |
5730 | ||
5731 | /* Is it an anonymous namespace? */ | |
5732 | ||
5733 | *is_anonymous = (name == NULL); | |
5734 | if (*is_anonymous) | |
5735 | name = "(anonymous namespace)"; | |
5736 | ||
5737 | return name; | |
d9fa45fe DC |
5738 | } |
5739 | ||
c906108c SS |
5740 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
5741 | the user defined type vector. */ | |
5742 | ||
f792889a | 5743 | static struct type * |
e7c27a73 | 5744 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5745 | { |
5e2b427d | 5746 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 5747 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 5748 | struct type *type; |
8b2dbe47 KB |
5749 | struct attribute *attr_byte_size; |
5750 | struct attribute *attr_address_class; | |
5751 | int byte_size, addr_class; | |
c906108c | 5752 | |
e7c27a73 | 5753 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 5754 | |
e142c38c | 5755 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
5756 | if (attr_byte_size) |
5757 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 5758 | else |
8b2dbe47 KB |
5759 | byte_size = cu_header->addr_size; |
5760 | ||
e142c38c | 5761 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
5762 | if (attr_address_class) |
5763 | addr_class = DW_UNSND (attr_address_class); | |
5764 | else | |
5765 | addr_class = DW_ADDR_none; | |
5766 | ||
5767 | /* If the pointer size or address class is different than the | |
5768 | default, create a type variant marked as such and set the | |
5769 | length accordingly. */ | |
5770 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 5771 | { |
5e2b427d | 5772 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
5773 | { |
5774 | int type_flags; | |
5775 | ||
849957d9 | 5776 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 5777 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
5778 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
5779 | == 0); | |
8b2dbe47 KB |
5780 | type = make_type_with_address_space (type, type_flags); |
5781 | } | |
5782 | else if (TYPE_LENGTH (type) != byte_size) | |
5783 | { | |
e2e0b3e5 | 5784 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 KB |
5785 | } |
5786 | else { | |
5787 | /* Should we also complain about unhandled address classes? */ | |
5788 | } | |
c906108c | 5789 | } |
8b2dbe47 KB |
5790 | |
5791 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 5792 | return set_die_type (die, type, cu); |
c906108c SS |
5793 | } |
5794 | ||
5795 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
5796 | the user defined type vector. */ | |
5797 | ||
f792889a | 5798 | static struct type * |
e7c27a73 | 5799 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5800 | { |
e7c27a73 | 5801 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5802 | struct type *type; |
5803 | struct type *to_type; | |
5804 | struct type *domain; | |
5805 | ||
e7c27a73 DJ |
5806 | to_type = die_type (die, cu); |
5807 | domain = die_containing_type (die, cu); | |
0d5de010 DJ |
5808 | |
5809 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) | |
5810 | type = lookup_methodptr_type (to_type); | |
5811 | else | |
5812 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 5813 | |
f792889a | 5814 | return set_die_type (die, type, cu); |
c906108c SS |
5815 | } |
5816 | ||
5817 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
5818 | the user defined type vector. */ | |
5819 | ||
f792889a | 5820 | static struct type * |
e7c27a73 | 5821 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5822 | { |
e7c27a73 | 5823 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5824 | struct type *type; |
5825 | struct attribute *attr; | |
5826 | ||
e7c27a73 | 5827 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 5828 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
5829 | if (attr) |
5830 | { | |
5831 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
5832 | } | |
5833 | else | |
5834 | { | |
107d2387 | 5835 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 5836 | } |
f792889a | 5837 | return set_die_type (die, type, cu); |
c906108c SS |
5838 | } |
5839 | ||
f792889a | 5840 | static struct type * |
e7c27a73 | 5841 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5842 | { |
f792889a | 5843 | struct type *base_type, *cv_type; |
c906108c | 5844 | |
e7c27a73 | 5845 | base_type = die_type (die, cu); |
f792889a DJ |
5846 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
5847 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
5848 | } |
5849 | ||
f792889a | 5850 | static struct type * |
e7c27a73 | 5851 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5852 | { |
f792889a | 5853 | struct type *base_type, *cv_type; |
c906108c | 5854 | |
e7c27a73 | 5855 | base_type = die_type (die, cu); |
f792889a DJ |
5856 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
5857 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
5858 | } |
5859 | ||
5860 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
5861 | the user defined type vector. It isn't really a user defined type, | |
5862 | but it behaves like one, with other DIE's using an AT_user_def_type | |
5863 | attribute to reference it. */ | |
5864 | ||
f792889a | 5865 | static struct type * |
e7c27a73 | 5866 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5867 | { |
e7c27a73 | 5868 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 5869 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
5870 | struct type *type, *range_type, *index_type, *char_type; |
5871 | struct attribute *attr; | |
5872 | unsigned int length; | |
5873 | ||
e142c38c | 5874 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
5875 | if (attr) |
5876 | { | |
5877 | length = DW_UNSND (attr); | |
5878 | } | |
5879 | else | |
5880 | { | |
b21b22e0 | 5881 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 5882 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
5883 | if (attr) |
5884 | { | |
5885 | length = DW_UNSND (attr); | |
5886 | } | |
5887 | else | |
5888 | { | |
5889 | length = 1; | |
5890 | } | |
c906108c | 5891 | } |
6ccb9162 | 5892 | |
46bf5051 | 5893 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 5894 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
5895 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
5896 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 5897 | |
f792889a | 5898 | return set_die_type (die, type, cu); |
c906108c SS |
5899 | } |
5900 | ||
5901 | /* Handle DIES due to C code like: | |
5902 | ||
5903 | struct foo | |
c5aa993b JM |
5904 | { |
5905 | int (*funcp)(int a, long l); | |
5906 | int b; | |
5907 | }; | |
c906108c SS |
5908 | |
5909 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 5910 | */ |
c906108c | 5911 | |
f792889a | 5912 | static struct type * |
e7c27a73 | 5913 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5914 | { |
5915 | struct type *type; /* Type that this function returns */ | |
5916 | struct type *ftype; /* Function that returns above type */ | |
5917 | struct attribute *attr; | |
5918 | ||
e7c27a73 | 5919 | type = die_type (die, cu); |
0c8b41f1 | 5920 | ftype = lookup_function_type (type); |
c906108c | 5921 | |
5b8101ae | 5922 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 5923 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 5924 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 5925 | || cu->language == language_cplus |
5b8101ae PM |
5926 | || cu->language == language_java |
5927 | || cu->language == language_pascal) | |
876cecd0 | 5928 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 5929 | |
c055b101 CV |
5930 | /* Store the calling convention in the type if it's available in |
5931 | the subroutine die. Otherwise set the calling convention to | |
5932 | the default value DW_CC_normal. */ | |
5933 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
5934 | TYPE_CALLING_CONVENTION (ftype) = attr ? DW_UNSND (attr) : DW_CC_normal; | |
76c10ea2 GM |
5935 | |
5936 | /* We need to add the subroutine type to the die immediately so | |
5937 | we don't infinitely recurse when dealing with parameters | |
5938 | declared as the same subroutine type. */ | |
5939 | set_die_type (die, ftype, cu); | |
c055b101 | 5940 | |
639d11d3 | 5941 | if (die->child != NULL) |
c906108c SS |
5942 | { |
5943 | struct die_info *child_die; | |
5944 | int nparams = 0; | |
5945 | int iparams = 0; | |
5946 | ||
5947 | /* Count the number of parameters. | |
5948 | FIXME: GDB currently ignores vararg functions, but knows about | |
5949 | vararg member functions. */ | |
639d11d3 | 5950 | child_die = die->child; |
c906108c SS |
5951 | while (child_die && child_die->tag) |
5952 | { | |
5953 | if (child_die->tag == DW_TAG_formal_parameter) | |
5954 | nparams++; | |
5955 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 5956 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
5957 | child_die = sibling_die (child_die); |
5958 | } | |
5959 | ||
5960 | /* Allocate storage for parameters and fill them in. */ | |
5961 | TYPE_NFIELDS (ftype) = nparams; | |
5962 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 5963 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 5964 | |
639d11d3 | 5965 | child_die = die->child; |
c906108c SS |
5966 | while (child_die && child_die->tag) |
5967 | { | |
5968 | if (child_die->tag == DW_TAG_formal_parameter) | |
5969 | { | |
5970 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
5971 | member functions. G++ helps GDB by marking the first |
5972 | parameter for non-static member functions (which is the | |
5973 | this pointer) as artificial. We pass this information | |
5974 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 5975 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
5976 | if (attr) |
5977 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
5978 | else | |
5979 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 5980 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
5981 | iparams++; |
5982 | } | |
5983 | child_die = sibling_die (child_die); | |
5984 | } | |
5985 | } | |
5986 | ||
76c10ea2 | 5987 | return ftype; |
c906108c SS |
5988 | } |
5989 | ||
f792889a | 5990 | static struct type * |
e7c27a73 | 5991 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5992 | { |
e7c27a73 | 5993 | struct objfile *objfile = cu->objfile; |
2f038fcb | 5994 | struct attribute *attr; |
0114d602 | 5995 | const char *name = NULL; |
f792889a | 5996 | struct type *this_type; |
c906108c | 5997 | |
94af9270 | 5998 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 5999 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
6000 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
6001 | TYPE_NAME (this_type) = (char *) name; | |
f792889a DJ |
6002 | set_die_type (die, this_type, cu); |
6003 | TYPE_TARGET_TYPE (this_type) = die_type (die, cu); | |
6004 | return this_type; | |
c906108c SS |
6005 | } |
6006 | ||
6007 | /* Find a representation of a given base type and install | |
6008 | it in the TYPE field of the die. */ | |
6009 | ||
f792889a | 6010 | static struct type * |
e7c27a73 | 6011 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6012 | { |
e7c27a73 | 6013 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6014 | struct type *type; |
6015 | struct attribute *attr; | |
6016 | int encoding = 0, size = 0; | |
39cbfefa | 6017 | char *name; |
6ccb9162 UW |
6018 | enum type_code code = TYPE_CODE_INT; |
6019 | int type_flags = 0; | |
6020 | struct type *target_type = NULL; | |
c906108c | 6021 | |
e142c38c | 6022 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
6023 | if (attr) |
6024 | { | |
6025 | encoding = DW_UNSND (attr); | |
6026 | } | |
e142c38c | 6027 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6028 | if (attr) |
6029 | { | |
6030 | size = DW_UNSND (attr); | |
6031 | } | |
39cbfefa | 6032 | name = dwarf2_name (die, cu); |
6ccb9162 | 6033 | if (!name) |
c906108c | 6034 | { |
6ccb9162 UW |
6035 | complaint (&symfile_complaints, |
6036 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 6037 | } |
6ccb9162 UW |
6038 | |
6039 | switch (encoding) | |
c906108c | 6040 | { |
6ccb9162 UW |
6041 | case DW_ATE_address: |
6042 | /* Turn DW_ATE_address into a void * pointer. */ | |
6043 | code = TYPE_CODE_PTR; | |
6044 | type_flags |= TYPE_FLAG_UNSIGNED; | |
6045 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
6046 | break; | |
6047 | case DW_ATE_boolean: | |
6048 | code = TYPE_CODE_BOOL; | |
6049 | type_flags |= TYPE_FLAG_UNSIGNED; | |
6050 | break; | |
6051 | case DW_ATE_complex_float: | |
6052 | code = TYPE_CODE_COMPLEX; | |
6053 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
6054 | break; | |
6055 | case DW_ATE_decimal_float: | |
6056 | code = TYPE_CODE_DECFLOAT; | |
6057 | break; | |
6058 | case DW_ATE_float: | |
6059 | code = TYPE_CODE_FLT; | |
6060 | break; | |
6061 | case DW_ATE_signed: | |
6062 | break; | |
6063 | case DW_ATE_unsigned: | |
6064 | type_flags |= TYPE_FLAG_UNSIGNED; | |
6065 | break; | |
6066 | case DW_ATE_signed_char: | |
868a0084 PM |
6067 | if (cu->language == language_ada || cu->language == language_m2 |
6068 | || cu->language == language_pascal) | |
6ccb9162 UW |
6069 | code = TYPE_CODE_CHAR; |
6070 | break; | |
6071 | case DW_ATE_unsigned_char: | |
868a0084 PM |
6072 | if (cu->language == language_ada || cu->language == language_m2 |
6073 | || cu->language == language_pascal) | |
6ccb9162 UW |
6074 | code = TYPE_CODE_CHAR; |
6075 | type_flags |= TYPE_FLAG_UNSIGNED; | |
6076 | break; | |
6077 | default: | |
6078 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
6079 | dwarf_type_encoding_name (encoding)); | |
6080 | break; | |
c906108c | 6081 | } |
6ccb9162 | 6082 | |
0114d602 DJ |
6083 | type = init_type (code, size, type_flags, NULL, objfile); |
6084 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
6085 | TYPE_TARGET_TYPE (type) = target_type; |
6086 | ||
0114d602 | 6087 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 6088 | TYPE_NOSIGN (type) = 1; |
0114d602 | 6089 | |
f792889a | 6090 | return set_die_type (die, type, cu); |
c906108c SS |
6091 | } |
6092 | ||
a02abb62 JB |
6093 | /* Read the given DW_AT_subrange DIE. */ |
6094 | ||
f792889a | 6095 | static struct type * |
a02abb62 JB |
6096 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
6097 | { | |
5e2b427d | 6098 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
a02abb62 JB |
6099 | struct type *base_type; |
6100 | struct type *range_type; | |
6101 | struct attribute *attr; | |
43bbcdc2 PH |
6102 | LONGEST low = 0; |
6103 | LONGEST high = -1; | |
39cbfefa | 6104 | char *name; |
43bbcdc2 | 6105 | LONGEST negative_mask; |
a02abb62 | 6106 | |
a02abb62 | 6107 | base_type = die_type (die, cu); |
3d1f72c2 | 6108 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
a02abb62 JB |
6109 | { |
6110 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6111 | _("DW_AT_type missing from DW_TAG_subrange_type")); |
17a912b6 | 6112 | base_type |
5e2b427d | 6113 | = init_type (TYPE_CODE_INT, gdbarch_addr_bit (gdbarch) / 8, |
6ccb9162 | 6114 | 0, NULL, cu->objfile); |
a02abb62 JB |
6115 | } |
6116 | ||
e142c38c | 6117 | if (cu->language == language_fortran) |
a02abb62 JB |
6118 | { |
6119 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
6120 | low = 1; | |
6121 | } | |
6122 | ||
dd5e6932 DJ |
6123 | /* FIXME: For variable sized arrays either of these could be |
6124 | a variable rather than a constant value. We'll allow it, | |
6125 | but we don't know how to handle it. */ | |
e142c38c | 6126 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
6127 | if (attr) |
6128 | low = dwarf2_get_attr_constant_value (attr, 0); | |
6129 | ||
e142c38c | 6130 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
6131 | if (attr) |
6132 | { | |
6133 | if (attr->form == DW_FORM_block1) | |
6134 | { | |
6135 | /* GCC encodes arrays with unspecified or dynamic length | |
6136 | with a DW_FORM_block1 attribute. | |
6137 | FIXME: GDB does not yet know how to handle dynamic | |
6138 | arrays properly, treat them as arrays with unspecified | |
6139 | length for now. | |
6140 | ||
6141 | FIXME: jimb/2003-09-22: GDB does not really know | |
6142 | how to handle arrays of unspecified length | |
6143 | either; we just represent them as zero-length | |
6144 | arrays. Choose an appropriate upper bound given | |
6145 | the lower bound we've computed above. */ | |
6146 | high = low - 1; | |
6147 | } | |
6148 | else | |
6149 | high = dwarf2_get_attr_constant_value (attr, 1); | |
6150 | } | |
6151 | ||
43bbcdc2 PH |
6152 | negative_mask = |
6153 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); | |
6154 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
6155 | low |= negative_mask; | |
6156 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
6157 | high |= negative_mask; | |
6158 | ||
a02abb62 JB |
6159 | range_type = create_range_type (NULL, base_type, low, high); |
6160 | ||
39cbfefa DJ |
6161 | name = dwarf2_name (die, cu); |
6162 | if (name) | |
6163 | TYPE_NAME (range_type) = name; | |
a02abb62 | 6164 | |
e142c38c | 6165 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
6166 | if (attr) |
6167 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
6168 | ||
b4ba55a1 JB |
6169 | set_descriptive_type (range_type, die, cu); |
6170 | ||
f792889a | 6171 | return set_die_type (die, range_type, cu); |
a02abb62 JB |
6172 | } |
6173 | ||
f792889a | 6174 | static struct type * |
81a17f79 JB |
6175 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
6176 | { | |
6177 | struct type *type; | |
81a17f79 | 6178 | |
81a17f79 JB |
6179 | /* For now, we only support the C meaning of an unspecified type: void. */ |
6180 | ||
0114d602 DJ |
6181 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
6182 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 6183 | |
f792889a | 6184 | return set_die_type (die, type, cu); |
81a17f79 | 6185 | } |
a02abb62 | 6186 | |
51545339 DJ |
6187 | /* Trivial hash function for die_info: the hash value of a DIE |
6188 | is its offset in .debug_info for this objfile. */ | |
6189 | ||
6190 | static hashval_t | |
6191 | die_hash (const void *item) | |
6192 | { | |
6193 | const struct die_info *die = item; | |
6194 | return die->offset; | |
6195 | } | |
6196 | ||
6197 | /* Trivial comparison function for die_info structures: two DIEs | |
6198 | are equal if they have the same offset. */ | |
6199 | ||
6200 | static int | |
6201 | die_eq (const void *item_lhs, const void *item_rhs) | |
6202 | { | |
6203 | const struct die_info *die_lhs = item_lhs; | |
6204 | const struct die_info *die_rhs = item_rhs; | |
6205 | return die_lhs->offset == die_rhs->offset; | |
6206 | } | |
6207 | ||
c906108c SS |
6208 | /* Read a whole compilation unit into a linked list of dies. */ |
6209 | ||
f9aca02d | 6210 | static struct die_info * |
93311388 | 6211 | read_comp_unit (gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 6212 | { |
93311388 DE |
6213 | struct die_reader_specs reader_specs; |
6214 | ||
348e048f | 6215 | gdb_assert (cu->die_hash == NULL); |
51545339 DJ |
6216 | cu->die_hash |
6217 | = htab_create_alloc_ex (cu->header.length / 12, | |
6218 | die_hash, | |
6219 | die_eq, | |
6220 | NULL, | |
6221 | &cu->comp_unit_obstack, | |
6222 | hashtab_obstack_allocate, | |
6223 | dummy_obstack_deallocate); | |
6224 | ||
93311388 DE |
6225 | init_cu_die_reader (&reader_specs, cu); |
6226 | ||
6227 | return read_die_and_children (&reader_specs, info_ptr, &info_ptr, NULL); | |
639d11d3 DC |
6228 | } |
6229 | ||
d97bc12b DE |
6230 | /* Main entry point for reading a DIE and all children. |
6231 | Read the DIE and dump it if requested. */ | |
6232 | ||
6233 | static struct die_info * | |
93311388 DE |
6234 | read_die_and_children (const struct die_reader_specs *reader, |
6235 | gdb_byte *info_ptr, | |
d97bc12b DE |
6236 | gdb_byte **new_info_ptr, |
6237 | struct die_info *parent) | |
6238 | { | |
93311388 | 6239 | struct die_info *result = read_die_and_children_1 (reader, info_ptr, |
d97bc12b DE |
6240 | new_info_ptr, parent); |
6241 | ||
6242 | if (dwarf2_die_debug) | |
6243 | { | |
348e048f DE |
6244 | fprintf_unfiltered (gdb_stdlog, |
6245 | "\nRead die from %s of %s:\n", | |
6246 | reader->buffer == dwarf2_per_objfile->info.buffer | |
6247 | ? ".debug_info" | |
6248 | : reader->buffer == dwarf2_per_objfile->types.buffer | |
6249 | ? ".debug_types" | |
6250 | : "unknown section", | |
6251 | reader->abfd->filename); | |
d97bc12b DE |
6252 | dump_die (result, dwarf2_die_debug); |
6253 | } | |
6254 | ||
6255 | return result; | |
6256 | } | |
6257 | ||
639d11d3 DC |
6258 | /* Read a single die and all its descendents. Set the die's sibling |
6259 | field to NULL; set other fields in the die correctly, and set all | |
6260 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
6261 | location of the info_ptr after reading all of those dies. PARENT | |
6262 | is the parent of the die in question. */ | |
6263 | ||
6264 | static struct die_info * | |
93311388 DE |
6265 | read_die_and_children_1 (const struct die_reader_specs *reader, |
6266 | gdb_byte *info_ptr, | |
d97bc12b DE |
6267 | gdb_byte **new_info_ptr, |
6268 | struct die_info *parent) | |
639d11d3 DC |
6269 | { |
6270 | struct die_info *die; | |
fe1b8b76 | 6271 | gdb_byte *cur_ptr; |
639d11d3 DC |
6272 | int has_children; |
6273 | ||
93311388 | 6274 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
6275 | if (die == NULL) |
6276 | { | |
6277 | *new_info_ptr = cur_ptr; | |
6278 | return NULL; | |
6279 | } | |
93311388 | 6280 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
6281 | |
6282 | if (has_children) | |
348e048f | 6283 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
6284 | else |
6285 | { | |
6286 | die->child = NULL; | |
6287 | *new_info_ptr = cur_ptr; | |
6288 | } | |
6289 | ||
6290 | die->sibling = NULL; | |
6291 | die->parent = parent; | |
6292 | return die; | |
6293 | } | |
6294 | ||
6295 | /* Read a die, all of its descendents, and all of its siblings; set | |
6296 | all of the fields of all of the dies correctly. Arguments are as | |
6297 | in read_die_and_children. */ | |
6298 | ||
6299 | static struct die_info * | |
93311388 DE |
6300 | read_die_and_siblings (const struct die_reader_specs *reader, |
6301 | gdb_byte *info_ptr, | |
fe1b8b76 | 6302 | gdb_byte **new_info_ptr, |
639d11d3 DC |
6303 | struct die_info *parent) |
6304 | { | |
6305 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 6306 | gdb_byte *cur_ptr; |
639d11d3 | 6307 | |
c906108c | 6308 | cur_ptr = info_ptr; |
639d11d3 DC |
6309 | first_die = last_sibling = NULL; |
6310 | ||
6311 | while (1) | |
c906108c | 6312 | { |
639d11d3 | 6313 | struct die_info *die |
93311388 | 6314 | = read_die_and_children_1 (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 6315 | |
1d325ec1 | 6316 | if (die == NULL) |
c906108c | 6317 | { |
639d11d3 DC |
6318 | *new_info_ptr = cur_ptr; |
6319 | return first_die; | |
c906108c | 6320 | } |
1d325ec1 DJ |
6321 | |
6322 | if (!first_die) | |
6323 | first_die = die; | |
c906108c | 6324 | else |
1d325ec1 DJ |
6325 | last_sibling->sibling = die; |
6326 | ||
6327 | last_sibling = die; | |
c906108c | 6328 | } |
c906108c SS |
6329 | } |
6330 | ||
93311388 DE |
6331 | /* Read the die from the .debug_info section buffer. Set DIEP to |
6332 | point to a newly allocated die with its information, except for its | |
6333 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
6334 | whether the die has children or not. */ | |
6335 | ||
6336 | static gdb_byte * | |
6337 | read_full_die (const struct die_reader_specs *reader, | |
6338 | struct die_info **diep, gdb_byte *info_ptr, | |
6339 | int *has_children) | |
6340 | { | |
6341 | unsigned int abbrev_number, bytes_read, i, offset; | |
6342 | struct abbrev_info *abbrev; | |
6343 | struct die_info *die; | |
6344 | struct dwarf2_cu *cu = reader->cu; | |
6345 | bfd *abfd = reader->abfd; | |
6346 | ||
6347 | offset = info_ptr - reader->buffer; | |
6348 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6349 | info_ptr += bytes_read; | |
6350 | if (!abbrev_number) | |
6351 | { | |
6352 | *diep = NULL; | |
6353 | *has_children = 0; | |
6354 | return info_ptr; | |
6355 | } | |
6356 | ||
6357 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
6358 | if (!abbrev) | |
348e048f DE |
6359 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
6360 | abbrev_number, | |
6361 | bfd_get_filename (abfd)); | |
6362 | ||
93311388 DE |
6363 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
6364 | die->offset = offset; | |
6365 | die->tag = abbrev->tag; | |
6366 | die->abbrev = abbrev_number; | |
6367 | ||
6368 | die->num_attrs = abbrev->num_attrs; | |
6369 | ||
6370 | for (i = 0; i < abbrev->num_attrs; ++i) | |
6371 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
6372 | abfd, info_ptr, cu); | |
6373 | ||
6374 | *diep = die; | |
6375 | *has_children = abbrev->has_children; | |
6376 | return info_ptr; | |
6377 | } | |
6378 | ||
c906108c SS |
6379 | /* In DWARF version 2, the description of the debugging information is |
6380 | stored in a separate .debug_abbrev section. Before we read any | |
6381 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
6382 | in a hash table. This function also sets flags in CU describing |
6383 | the data found in the abbrev table. */ | |
c906108c SS |
6384 | |
6385 | static void | |
e7c27a73 | 6386 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 6387 | { |
e7c27a73 | 6388 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 6389 | gdb_byte *abbrev_ptr; |
c906108c SS |
6390 | struct abbrev_info *cur_abbrev; |
6391 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
6392 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
6393 | struct attr_abbrev *cur_attrs; |
6394 | unsigned int allocated_attrs; | |
c906108c | 6395 | |
57349743 | 6396 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
6397 | obstack_init (&cu->abbrev_obstack); |
6398 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
6399 | (ABBREV_HASH_SIZE | |
6400 | * sizeof (struct abbrev_info *))); | |
6401 | memset (cu->dwarf2_abbrevs, 0, | |
6402 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 6403 | |
be391dca TT |
6404 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
6405 | &dwarf2_per_objfile->abbrev); | |
dce234bc | 6406 | abbrev_ptr = dwarf2_per_objfile->abbrev.buffer + cu_header->abbrev_offset; |
c906108c SS |
6407 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
6408 | abbrev_ptr += bytes_read; | |
6409 | ||
f3dd6933 DJ |
6410 | allocated_attrs = ATTR_ALLOC_CHUNK; |
6411 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6412 | ||
c906108c SS |
6413 | /* loop until we reach an abbrev number of 0 */ |
6414 | while (abbrev_number) | |
6415 | { | |
f3dd6933 | 6416 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
6417 | |
6418 | /* read in abbrev header */ | |
6419 | cur_abbrev->number = abbrev_number; | |
6420 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
6421 | abbrev_ptr += bytes_read; | |
6422 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
6423 | abbrev_ptr += 1; | |
6424 | ||
72bf9492 DJ |
6425 | if (cur_abbrev->tag == DW_TAG_namespace) |
6426 | cu->has_namespace_info = 1; | |
6427 | ||
c906108c SS |
6428 | /* now read in declarations */ |
6429 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
6430 | abbrev_ptr += bytes_read; | |
6431 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
6432 | abbrev_ptr += bytes_read; | |
6433 | while (abbrev_name) | |
6434 | { | |
f3dd6933 | 6435 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 6436 | { |
f3dd6933 DJ |
6437 | allocated_attrs += ATTR_ALLOC_CHUNK; |
6438 | cur_attrs | |
6439 | = xrealloc (cur_attrs, (allocated_attrs | |
6440 | * sizeof (struct attr_abbrev))); | |
c906108c | 6441 | } |
ae038cb0 DJ |
6442 | |
6443 | /* Record whether this compilation unit might have | |
6444 | inter-compilation-unit references. If we don't know what form | |
6445 | this attribute will have, then it might potentially be a | |
6446 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
6447 | references. */ | |
6448 | ||
6449 | if (abbrev_form == DW_FORM_ref_addr | |
6450 | || abbrev_form == DW_FORM_indirect) | |
6451 | cu->has_form_ref_addr = 1; | |
6452 | ||
f3dd6933 DJ |
6453 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
6454 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
6455 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
6456 | abbrev_ptr += bytes_read; | |
6457 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
6458 | abbrev_ptr += bytes_read; | |
6459 | } | |
6460 | ||
f3dd6933 DJ |
6461 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
6462 | (cur_abbrev->num_attrs | |
6463 | * sizeof (struct attr_abbrev))); | |
6464 | memcpy (cur_abbrev->attrs, cur_attrs, | |
6465 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
6466 | ||
c906108c | 6467 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
6468 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
6469 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
6470 | |
6471 | /* Get next abbreviation. | |
6472 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
6473 | always properly terminated with an abbrev number of 0. |
6474 | Exit loop if we encounter an abbreviation which we have | |
6475 | already read (which means we are about to read the abbreviations | |
6476 | for the next compile unit) or if the end of the abbreviation | |
6477 | table is reached. */ | |
dce234bc PP |
6478 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev.buffer) |
6479 | >= dwarf2_per_objfile->abbrev.size) | |
c906108c SS |
6480 | break; |
6481 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
6482 | abbrev_ptr += bytes_read; | |
e7c27a73 | 6483 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
6484 | break; |
6485 | } | |
f3dd6933 DJ |
6486 | |
6487 | xfree (cur_attrs); | |
c906108c SS |
6488 | } |
6489 | ||
f3dd6933 | 6490 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 6491 | |
c906108c | 6492 | static void |
f3dd6933 | 6493 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 6494 | { |
f3dd6933 | 6495 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 6496 | |
f3dd6933 DJ |
6497 | obstack_free (&cu->abbrev_obstack, NULL); |
6498 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
6499 | } |
6500 | ||
6501 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
6502 | ||
6503 | static struct abbrev_info * | |
e7c27a73 | 6504 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
6505 | { |
6506 | unsigned int hash_number; | |
6507 | struct abbrev_info *abbrev; | |
6508 | ||
6509 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 6510 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
6511 | |
6512 | while (abbrev) | |
6513 | { | |
6514 | if (abbrev->number == number) | |
6515 | return abbrev; | |
6516 | else | |
6517 | abbrev = abbrev->next; | |
6518 | } | |
6519 | return NULL; | |
6520 | } | |
6521 | ||
72bf9492 DJ |
6522 | /* Returns nonzero if TAG represents a type that we might generate a partial |
6523 | symbol for. */ | |
6524 | ||
6525 | static int | |
6526 | is_type_tag_for_partial (int tag) | |
6527 | { | |
6528 | switch (tag) | |
6529 | { | |
6530 | #if 0 | |
6531 | /* Some types that would be reasonable to generate partial symbols for, | |
6532 | that we don't at present. */ | |
6533 | case DW_TAG_array_type: | |
6534 | case DW_TAG_file_type: | |
6535 | case DW_TAG_ptr_to_member_type: | |
6536 | case DW_TAG_set_type: | |
6537 | case DW_TAG_string_type: | |
6538 | case DW_TAG_subroutine_type: | |
6539 | #endif | |
6540 | case DW_TAG_base_type: | |
6541 | case DW_TAG_class_type: | |
680b30c7 | 6542 | case DW_TAG_interface_type: |
72bf9492 DJ |
6543 | case DW_TAG_enumeration_type: |
6544 | case DW_TAG_structure_type: | |
6545 | case DW_TAG_subrange_type: | |
6546 | case DW_TAG_typedef: | |
6547 | case DW_TAG_union_type: | |
6548 | return 1; | |
6549 | default: | |
6550 | return 0; | |
6551 | } | |
6552 | } | |
6553 | ||
6554 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
6555 | ||
6556 | static struct partial_die_info * | |
93311388 DE |
6557 | load_partial_dies (bfd *abfd, gdb_byte *buffer, gdb_byte *info_ptr, |
6558 | int building_psymtab, struct dwarf2_cu *cu) | |
72bf9492 DJ |
6559 | { |
6560 | struct partial_die_info *part_die; | |
6561 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
6562 | struct abbrev_info *abbrev; | |
6563 | unsigned int bytes_read; | |
5afb4e99 | 6564 | unsigned int load_all = 0; |
72bf9492 DJ |
6565 | |
6566 | int nesting_level = 1; | |
6567 | ||
6568 | parent_die = NULL; | |
6569 | last_die = NULL; | |
6570 | ||
5afb4e99 DJ |
6571 | if (cu->per_cu && cu->per_cu->load_all_dies) |
6572 | load_all = 1; | |
6573 | ||
72bf9492 DJ |
6574 | cu->partial_dies |
6575 | = htab_create_alloc_ex (cu->header.length / 12, | |
6576 | partial_die_hash, | |
6577 | partial_die_eq, | |
6578 | NULL, | |
6579 | &cu->comp_unit_obstack, | |
6580 | hashtab_obstack_allocate, | |
6581 | dummy_obstack_deallocate); | |
6582 | ||
6583 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
6584 | sizeof (struct partial_die_info)); | |
6585 | ||
6586 | while (1) | |
6587 | { | |
6588 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
6589 | ||
6590 | /* A NULL abbrev means the end of a series of children. */ | |
6591 | if (abbrev == NULL) | |
6592 | { | |
6593 | if (--nesting_level == 0) | |
6594 | { | |
6595 | /* PART_DIE was probably the last thing allocated on the | |
6596 | comp_unit_obstack, so we could call obstack_free | |
6597 | here. We don't do that because the waste is small, | |
6598 | and will be cleaned up when we're done with this | |
6599 | compilation unit. This way, we're also more robust | |
6600 | against other users of the comp_unit_obstack. */ | |
6601 | return first_die; | |
6602 | } | |
6603 | info_ptr += bytes_read; | |
6604 | last_die = parent_die; | |
6605 | parent_die = parent_die->die_parent; | |
6606 | continue; | |
6607 | } | |
6608 | ||
5afb4e99 DJ |
6609 | /* Check whether this DIE is interesting enough to save. Normally |
6610 | we would not be interested in members here, but there may be | |
6611 | later variables referencing them via DW_AT_specification (for | |
6612 | static members). */ | |
6613 | if (!load_all | |
6614 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
6615 | && abbrev->tag != DW_TAG_enumerator |
6616 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 6617 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 6618 | && abbrev->tag != DW_TAG_variable |
5afb4e99 DJ |
6619 | && abbrev->tag != DW_TAG_namespace |
6620 | && abbrev->tag != DW_TAG_member) | |
72bf9492 DJ |
6621 | { |
6622 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 6623 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
72bf9492 DJ |
6624 | continue; |
6625 | } | |
6626 | ||
93311388 DE |
6627 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, abfd, |
6628 | buffer, info_ptr, cu); | |
72bf9492 DJ |
6629 | |
6630 | /* This two-pass algorithm for processing partial symbols has a | |
6631 | high cost in cache pressure. Thus, handle some simple cases | |
6632 | here which cover the majority of C partial symbols. DIEs | |
6633 | which neither have specification tags in them, nor could have | |
6634 | specification tags elsewhere pointing at them, can simply be | |
6635 | processed and discarded. | |
6636 | ||
6637 | This segment is also optional; scan_partial_symbols and | |
6638 | add_partial_symbol will handle these DIEs if we chain | |
6639 | them in normally. When compilers which do not emit large | |
6640 | quantities of duplicate debug information are more common, | |
6641 | this code can probably be removed. */ | |
6642 | ||
6643 | /* Any complete simple types at the top level (pretty much all | |
6644 | of them, for a language without namespaces), can be processed | |
6645 | directly. */ | |
6646 | if (parent_die == NULL | |
6647 | && part_die->has_specification == 0 | |
6648 | && part_die->is_declaration == 0 | |
6649 | && (part_die->tag == DW_TAG_typedef | |
6650 | || part_die->tag == DW_TAG_base_type | |
6651 | || part_die->tag == DW_TAG_subrange_type)) | |
6652 | { | |
6653 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 6654 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 DJ |
6655 | VAR_DOMAIN, LOC_TYPEDEF, |
6656 | &cu->objfile->static_psymbols, | |
6657 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
93311388 | 6658 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
6659 | continue; |
6660 | } | |
6661 | ||
6662 | /* If we're at the second level, and we're an enumerator, and | |
6663 | our parent has no specification (meaning possibly lives in a | |
6664 | namespace elsewhere), then we can add the partial symbol now | |
6665 | instead of queueing it. */ | |
6666 | if (part_die->tag == DW_TAG_enumerator | |
6667 | && parent_die != NULL | |
6668 | && parent_die->die_parent == NULL | |
6669 | && parent_die->tag == DW_TAG_enumeration_type | |
6670 | && parent_die->has_specification == 0) | |
6671 | { | |
6672 | if (part_die->name == NULL) | |
e2e0b3e5 | 6673 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 | 6674 | else if (building_psymtab) |
04a679b8 | 6675 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 6676 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
6677 | (cu->language == language_cplus |
6678 | || cu->language == language_java) | |
72bf9492 DJ |
6679 | ? &cu->objfile->global_psymbols |
6680 | : &cu->objfile->static_psymbols, | |
6681 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
6682 | ||
93311388 | 6683 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
6684 | continue; |
6685 | } | |
6686 | ||
6687 | /* We'll save this DIE so link it in. */ | |
6688 | part_die->die_parent = parent_die; | |
6689 | part_die->die_sibling = NULL; | |
6690 | part_die->die_child = NULL; | |
6691 | ||
6692 | if (last_die && last_die == parent_die) | |
6693 | last_die->die_child = part_die; | |
6694 | else if (last_die) | |
6695 | last_die->die_sibling = part_die; | |
6696 | ||
6697 | last_die = part_die; | |
6698 | ||
6699 | if (first_die == NULL) | |
6700 | first_die = part_die; | |
6701 | ||
6702 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
6703 | find interesting need to be in the hash table, because we | |
6704 | also have the parent/sibling/child chains; only those that we | |
6705 | might refer to by offset later during partial symbol reading. | |
6706 | ||
6707 | For now this means things that might have be the target of a | |
6708 | DW_AT_specification, DW_AT_abstract_origin, or | |
6709 | DW_AT_extension. DW_AT_extension will refer only to | |
6710 | namespaces; DW_AT_abstract_origin refers to functions (and | |
6711 | many things under the function DIE, but we do not recurse | |
6712 | into function DIEs during partial symbol reading) and | |
6713 | possibly variables as well; DW_AT_specification refers to | |
6714 | declarations. Declarations ought to have the DW_AT_declaration | |
6715 | flag. It happens that GCC forgets to put it in sometimes, but | |
6716 | only for functions, not for types. | |
6717 | ||
6718 | Adding more things than necessary to the hash table is harmless | |
6719 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
6720 | wasted time in find_partial_die, when we reread the compilation |
6721 | unit with load_all_dies set. */ | |
72bf9492 | 6722 | |
5afb4e99 DJ |
6723 | if (load_all |
6724 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
6725 | || abbrev->tag == DW_TAG_variable |
6726 | || abbrev->tag == DW_TAG_namespace | |
6727 | || part_die->is_declaration) | |
6728 | { | |
6729 | void **slot; | |
6730 | ||
6731 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
6732 | part_die->offset, INSERT); | |
6733 | *slot = part_die; | |
6734 | } | |
6735 | ||
6736 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
6737 | sizeof (struct partial_die_info)); | |
6738 | ||
6739 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 6740 | we have no reason to follow the children of structures; for other |
72bf9492 | 6741 | languages we have to, both so that we can get at method physnames |
bc30ff58 JB |
6742 | to infer fully qualified class names, and for DW_AT_specification. |
6743 | ||
6744 | For Ada, we need to scan the children of subprograms and lexical | |
6745 | blocks as well because Ada allows the definition of nested | |
6746 | entities that could be interesting for the debugger, such as | |
6747 | nested subprograms for instance. */ | |
72bf9492 | 6748 | if (last_die->has_children |
5afb4e99 DJ |
6749 | && (load_all |
6750 | || last_die->tag == DW_TAG_namespace | |
72bf9492 DJ |
6751 | || last_die->tag == DW_TAG_enumeration_type |
6752 | || (cu->language != language_c | |
6753 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 6754 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 6755 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
6756 | || last_die->tag == DW_TAG_union_type)) |
6757 | || (cu->language == language_ada | |
6758 | && (last_die->tag == DW_TAG_subprogram | |
6759 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
6760 | { |
6761 | nesting_level++; | |
6762 | parent_die = last_die; | |
6763 | continue; | |
6764 | } | |
6765 | ||
6766 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 6767 | info_ptr = locate_pdi_sibling (last_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
6768 | |
6769 | /* Back to the top, do it again. */ | |
6770 | } | |
6771 | } | |
6772 | ||
c906108c SS |
6773 | /* Read a minimal amount of information into the minimal die structure. */ |
6774 | ||
fe1b8b76 | 6775 | static gdb_byte * |
72bf9492 DJ |
6776 | read_partial_die (struct partial_die_info *part_die, |
6777 | struct abbrev_info *abbrev, | |
6778 | unsigned int abbrev_len, bfd *abfd, | |
93311388 DE |
6779 | gdb_byte *buffer, gdb_byte *info_ptr, |
6780 | struct dwarf2_cu *cu) | |
c906108c | 6781 | { |
72bf9492 | 6782 | unsigned int bytes_read, i; |
c906108c | 6783 | struct attribute attr; |
c5aa993b | 6784 | int has_low_pc_attr = 0; |
c906108c SS |
6785 | int has_high_pc_attr = 0; |
6786 | ||
72bf9492 | 6787 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 6788 | |
93311388 | 6789 | part_die->offset = info_ptr - buffer; |
72bf9492 DJ |
6790 | |
6791 | info_ptr += abbrev_len; | |
6792 | ||
6793 | if (abbrev == NULL) | |
6794 | return info_ptr; | |
6795 | ||
c906108c SS |
6796 | part_die->tag = abbrev->tag; |
6797 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
6798 | |
6799 | for (i = 0; i < abbrev->num_attrs; ++i) | |
6800 | { | |
e7c27a73 | 6801 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
6802 | |
6803 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 6804 | partial symbol table. */ |
c906108c SS |
6805 | switch (attr.name) |
6806 | { | |
6807 | case DW_AT_name: | |
71c25dea TT |
6808 | switch (part_die->tag) |
6809 | { | |
6810 | case DW_TAG_compile_unit: | |
348e048f | 6811 | case DW_TAG_type_unit: |
71c25dea TT |
6812 | /* Compilation units have a DW_AT_name that is a filename, not |
6813 | a source language identifier. */ | |
6814 | case DW_TAG_enumeration_type: | |
6815 | case DW_TAG_enumerator: | |
6816 | /* These tags always have simple identifiers already; no need | |
6817 | to canonicalize them. */ | |
6818 | part_die->name = DW_STRING (&attr); | |
6819 | break; | |
6820 | default: | |
6821 | part_die->name | |
6822 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
95519e0e | 6823 | &cu->objfile->objfile_obstack); |
71c25dea TT |
6824 | break; |
6825 | } | |
c906108c SS |
6826 | break; |
6827 | case DW_AT_MIPS_linkage_name: | |
94af9270 KS |
6828 | if (cu->language == language_ada) |
6829 | part_die->name = DW_STRING (&attr); | |
c906108c SS |
6830 | break; |
6831 | case DW_AT_low_pc: | |
6832 | has_low_pc_attr = 1; | |
6833 | part_die->lowpc = DW_ADDR (&attr); | |
6834 | break; | |
6835 | case DW_AT_high_pc: | |
6836 | has_high_pc_attr = 1; | |
6837 | part_die->highpc = DW_ADDR (&attr); | |
6838 | break; | |
6839 | case DW_AT_location: | |
8e19ed76 PS |
6840 | /* Support the .debug_loc offsets */ |
6841 | if (attr_form_is_block (&attr)) | |
6842 | { | |
6843 | part_die->locdesc = DW_BLOCK (&attr); | |
6844 | } | |
3690dd37 | 6845 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 6846 | { |
4d3c2250 | 6847 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
6848 | } |
6849 | else | |
6850 | { | |
4d3c2250 KB |
6851 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
6852 | "partial symbol information"); | |
8e19ed76 | 6853 | } |
c906108c | 6854 | break; |
c906108c SS |
6855 | case DW_AT_external: |
6856 | part_die->is_external = DW_UNSND (&attr); | |
6857 | break; | |
6858 | case DW_AT_declaration: | |
6859 | part_die->is_declaration = DW_UNSND (&attr); | |
6860 | break; | |
6861 | case DW_AT_type: | |
6862 | part_die->has_type = 1; | |
6863 | break; | |
6864 | case DW_AT_abstract_origin: | |
6865 | case DW_AT_specification: | |
72bf9492 DJ |
6866 | case DW_AT_extension: |
6867 | part_die->has_specification = 1; | |
c764a876 | 6868 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
6869 | break; |
6870 | case DW_AT_sibling: | |
6871 | /* Ignore absolute siblings, they might point outside of | |
6872 | the current compile unit. */ | |
6873 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 6874 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 6875 | else |
93311388 | 6876 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr); |
c906108c | 6877 | break; |
fa4028e9 JB |
6878 | case DW_AT_byte_size: |
6879 | part_die->has_byte_size = 1; | |
6880 | break; | |
68511cec CES |
6881 | case DW_AT_calling_convention: |
6882 | /* DWARF doesn't provide a way to identify a program's source-level | |
6883 | entry point. DW_AT_calling_convention attributes are only meant | |
6884 | to describe functions' calling conventions. | |
6885 | ||
6886 | However, because it's a necessary piece of information in | |
6887 | Fortran, and because DW_CC_program is the only piece of debugging | |
6888 | information whose definition refers to a 'main program' at all, | |
6889 | several compilers have begun marking Fortran main programs with | |
6890 | DW_CC_program --- even when those functions use the standard | |
6891 | calling conventions. | |
6892 | ||
6893 | So until DWARF specifies a way to provide this information and | |
6894 | compilers pick up the new representation, we'll support this | |
6895 | practice. */ | |
6896 | if (DW_UNSND (&attr) == DW_CC_program | |
6897 | && cu->language == language_fortran) | |
6898 | set_main_name (part_die->name); | |
6899 | break; | |
c906108c SS |
6900 | default: |
6901 | break; | |
6902 | } | |
6903 | } | |
6904 | ||
c906108c SS |
6905 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
6906 | eliminate duplicate copies of functions and vtables and such. | |
6907 | The linker will arbitrarily choose one and discard the others. | |
6908 | The AT_*_pc values for such functions refer to local labels in | |
6909 | these sections. If the section from that file was discarded, the | |
6910 | labels are not in the output, so the relocs get a value of 0. | |
6911 | If this is a discarded function, mark the pc bounds as invalid, | |
6912 | so that GDB will ignore it. */ | |
6913 | if (has_low_pc_attr && has_high_pc_attr | |
6914 | && part_die->lowpc < part_die->highpc | |
6915 | && (part_die->lowpc != 0 | |
72dca2f5 | 6916 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 6917 | part_die->has_pc_info = 1; |
85cbf3d3 | 6918 | |
c906108c SS |
6919 | return info_ptr; |
6920 | } | |
6921 | ||
72bf9492 DJ |
6922 | /* Find a cached partial DIE at OFFSET in CU. */ |
6923 | ||
6924 | static struct partial_die_info * | |
c764a876 | 6925 | find_partial_die_in_comp_unit (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
6926 | { |
6927 | struct partial_die_info *lookup_die = NULL; | |
6928 | struct partial_die_info part_die; | |
6929 | ||
6930 | part_die.offset = offset; | |
6931 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
6932 | ||
72bf9492 DJ |
6933 | return lookup_die; |
6934 | } | |
6935 | ||
348e048f DE |
6936 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
6937 | except in the case of .debug_types DIEs which do not reference | |
6938 | outside their CU (they do however referencing other types via | |
6939 | DW_FORM_sig8). */ | |
72bf9492 DJ |
6940 | |
6941 | static struct partial_die_info * | |
c764a876 | 6942 | find_partial_die (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 | 6943 | { |
5afb4e99 DJ |
6944 | struct dwarf2_per_cu_data *per_cu = NULL; |
6945 | struct partial_die_info *pd = NULL; | |
72bf9492 | 6946 | |
348e048f DE |
6947 | if (cu->per_cu->from_debug_types) |
6948 | { | |
6949 | pd = find_partial_die_in_comp_unit (offset, cu); | |
6950 | if (pd != NULL) | |
6951 | return pd; | |
6952 | goto not_found; | |
6953 | } | |
6954 | ||
45452591 | 6955 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
6956 | { |
6957 | pd = find_partial_die_in_comp_unit (offset, cu); | |
6958 | if (pd != NULL) | |
6959 | return pd; | |
6960 | } | |
72bf9492 | 6961 | |
ae038cb0 DJ |
6962 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
6963 | ||
ae038cb0 DJ |
6964 | if (per_cu->cu == NULL) |
6965 | { | |
93311388 | 6966 | load_partial_comp_unit (per_cu, cu->objfile); |
ae038cb0 DJ |
6967 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
6968 | dwarf2_per_objfile->read_in_chain = per_cu; | |
6969 | } | |
6970 | ||
6971 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
6972 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
6973 | ||
6974 | if (pd == NULL && per_cu->load_all_dies == 0) | |
6975 | { | |
6976 | struct cleanup *back_to; | |
6977 | struct partial_die_info comp_unit_die; | |
6978 | struct abbrev_info *abbrev; | |
6979 | unsigned int bytes_read; | |
6980 | char *info_ptr; | |
6981 | ||
6982 | per_cu->load_all_dies = 1; | |
6983 | ||
6984 | /* Re-read the DIEs. */ | |
6985 | back_to = make_cleanup (null_cleanup, 0); | |
6986 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
6987 | { | |
6988 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
53d72f98 | 6989 | make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); |
5afb4e99 | 6990 | } |
dce234bc | 6991 | info_ptr = (dwarf2_per_objfile->info.buffer |
d00adf39 DE |
6992 | + per_cu->cu->header.offset |
6993 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
6994 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
6995 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
93311388 DE |
6996 | per_cu->cu->objfile->obfd, |
6997 | dwarf2_per_objfile->info.buffer, info_ptr, | |
5afb4e99 DJ |
6998 | per_cu->cu); |
6999 | if (comp_unit_die.has_children) | |
93311388 DE |
7000 | load_partial_dies (per_cu->cu->objfile->obfd, |
7001 | dwarf2_per_objfile->info.buffer, info_ptr, | |
7002 | 0, per_cu->cu); | |
5afb4e99 DJ |
7003 | do_cleanups (back_to); |
7004 | ||
7005 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
7006 | } | |
7007 | ||
348e048f DE |
7008 | not_found: |
7009 | ||
5afb4e99 DJ |
7010 | if (pd == NULL) |
7011 | internal_error (__FILE__, __LINE__, | |
c764a876 | 7012 | _("could not find partial DIE 0x%x in cache [from module %s]\n"), |
5afb4e99 DJ |
7013 | offset, bfd_get_filename (cu->objfile->obfd)); |
7014 | return pd; | |
72bf9492 DJ |
7015 | } |
7016 | ||
7017 | /* Adjust PART_DIE before generating a symbol for it. This function | |
7018 | may set the is_external flag or change the DIE's name. */ | |
7019 | ||
7020 | static void | |
7021 | fixup_partial_die (struct partial_die_info *part_die, | |
7022 | struct dwarf2_cu *cu) | |
7023 | { | |
7024 | /* If we found a reference attribute and the DIE has no name, try | |
7025 | to find a name in the referred to DIE. */ | |
7026 | ||
7027 | if (part_die->name == NULL && part_die->has_specification) | |
7028 | { | |
7029 | struct partial_die_info *spec_die; | |
72bf9492 | 7030 | |
10b3939b | 7031 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 7032 | |
10b3939b | 7033 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
7034 | |
7035 | if (spec_die->name) | |
7036 | { | |
7037 | part_die->name = spec_die->name; | |
7038 | ||
7039 | /* Copy DW_AT_external attribute if it is set. */ | |
7040 | if (spec_die->is_external) | |
7041 | part_die->is_external = spec_die->is_external; | |
7042 | } | |
7043 | } | |
7044 | ||
7045 | /* Set default names for some unnamed DIEs. */ | |
7046 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
7047 | || part_die->tag == DW_TAG_class_type)) | |
7048 | part_die->name = "(anonymous class)"; | |
7049 | ||
7050 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
7051 | part_die->name = "(anonymous namespace)"; | |
7052 | ||
7053 | if (part_die->tag == DW_TAG_structure_type | |
7054 | || part_die->tag == DW_TAG_class_type | |
7055 | || part_die->tag == DW_TAG_union_type) | |
7056 | guess_structure_name (part_die, cu); | |
7057 | } | |
7058 | ||
a8329558 | 7059 | /* Read an attribute value described by an attribute form. */ |
c906108c | 7060 | |
fe1b8b76 | 7061 | static gdb_byte * |
a8329558 | 7062 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 7063 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 7064 | struct dwarf2_cu *cu) |
c906108c | 7065 | { |
e7c27a73 | 7066 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
7067 | unsigned int bytes_read; |
7068 | struct dwarf_block *blk; | |
7069 | ||
a8329558 KW |
7070 | attr->form = form; |
7071 | switch (form) | |
c906108c | 7072 | { |
c906108c | 7073 | case DW_FORM_ref_addr: |
ae411497 TT |
7074 | if (cu->header.version == 2) |
7075 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); | |
7076 | else | |
7077 | DW_ADDR (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
7078 | info_ptr += bytes_read; | |
7079 | break; | |
7080 | case DW_FORM_addr: | |
e7c27a73 | 7081 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 7082 | info_ptr += bytes_read; |
c906108c SS |
7083 | break; |
7084 | case DW_FORM_block2: | |
7b5a2f43 | 7085 | blk = dwarf_alloc_block (cu); |
c906108c SS |
7086 | blk->size = read_2_bytes (abfd, info_ptr); |
7087 | info_ptr += 2; | |
7088 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
7089 | info_ptr += blk->size; | |
7090 | DW_BLOCK (attr) = blk; | |
7091 | break; | |
7092 | case DW_FORM_block4: | |
7b5a2f43 | 7093 | blk = dwarf_alloc_block (cu); |
c906108c SS |
7094 | blk->size = read_4_bytes (abfd, info_ptr); |
7095 | info_ptr += 4; | |
7096 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
7097 | info_ptr += blk->size; | |
7098 | DW_BLOCK (attr) = blk; | |
7099 | break; | |
7100 | case DW_FORM_data2: | |
7101 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
7102 | info_ptr += 2; | |
7103 | break; | |
7104 | case DW_FORM_data4: | |
7105 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
7106 | info_ptr += 4; | |
7107 | break; | |
7108 | case DW_FORM_data8: | |
7109 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
7110 | info_ptr += 8; | |
7111 | break; | |
7112 | case DW_FORM_string: | |
7113 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
8285870a | 7114 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
7115 | info_ptr += bytes_read; |
7116 | break; | |
4bdf3d34 JJ |
7117 | case DW_FORM_strp: |
7118 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
7119 | &bytes_read); | |
8285870a | 7120 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
7121 | info_ptr += bytes_read; |
7122 | break; | |
c906108c | 7123 | case DW_FORM_block: |
7b5a2f43 | 7124 | blk = dwarf_alloc_block (cu); |
c906108c SS |
7125 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
7126 | info_ptr += bytes_read; | |
7127 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
7128 | info_ptr += blk->size; | |
7129 | DW_BLOCK (attr) = blk; | |
7130 | break; | |
7131 | case DW_FORM_block1: | |
7b5a2f43 | 7132 | blk = dwarf_alloc_block (cu); |
c906108c SS |
7133 | blk->size = read_1_byte (abfd, info_ptr); |
7134 | info_ptr += 1; | |
7135 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
7136 | info_ptr += blk->size; | |
7137 | DW_BLOCK (attr) = blk; | |
7138 | break; | |
7139 | case DW_FORM_data1: | |
7140 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
7141 | info_ptr += 1; | |
7142 | break; | |
7143 | case DW_FORM_flag: | |
7144 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
7145 | info_ptr += 1; | |
7146 | break; | |
7147 | case DW_FORM_sdata: | |
7148 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
7149 | info_ptr += bytes_read; | |
7150 | break; | |
7151 | case DW_FORM_udata: | |
7152 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7153 | info_ptr += bytes_read; | |
7154 | break; | |
7155 | case DW_FORM_ref1: | |
10b3939b | 7156 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
7157 | info_ptr += 1; |
7158 | break; | |
7159 | case DW_FORM_ref2: | |
10b3939b | 7160 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
7161 | info_ptr += 2; |
7162 | break; | |
7163 | case DW_FORM_ref4: | |
10b3939b | 7164 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
7165 | info_ptr += 4; |
7166 | break; | |
613e1657 | 7167 | case DW_FORM_ref8: |
10b3939b | 7168 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
7169 | info_ptr += 8; |
7170 | break; | |
348e048f DE |
7171 | case DW_FORM_sig8: |
7172 | /* Convert the signature to something we can record in DW_UNSND | |
7173 | for later lookup. | |
7174 | NOTE: This is NULL if the type wasn't found. */ | |
7175 | DW_SIGNATURED_TYPE (attr) = | |
7176 | lookup_signatured_type (cu->objfile, read_8_bytes (abfd, info_ptr)); | |
7177 | info_ptr += 8; | |
7178 | break; | |
c906108c | 7179 | case DW_FORM_ref_udata: |
10b3939b DJ |
7180 | DW_ADDR (attr) = (cu->header.offset |
7181 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
7182 | info_ptr += bytes_read; |
7183 | break; | |
c906108c | 7184 | case DW_FORM_indirect: |
a8329558 KW |
7185 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
7186 | info_ptr += bytes_read; | |
e7c27a73 | 7187 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 7188 | break; |
c906108c | 7189 | default: |
8a3fe4f8 | 7190 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
7191 | dwarf_form_name (form), |
7192 | bfd_get_filename (abfd)); | |
c906108c | 7193 | } |
28e94949 JB |
7194 | |
7195 | /* We have seen instances where the compiler tried to emit a byte | |
7196 | size attribute of -1 which ended up being encoded as an unsigned | |
7197 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
7198 | an object of this size seems pretty unlikely so we can relatively | |
7199 | safely treat these cases as if the size attribute was invalid and | |
7200 | treat them as zero by default. */ | |
7201 | if (attr->name == DW_AT_byte_size | |
7202 | && form == DW_FORM_data4 | |
7203 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
7204 | { |
7205 | complaint | |
7206 | (&symfile_complaints, | |
43bbcdc2 PH |
7207 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
7208 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
7209 | DW_UNSND (attr) = 0; |
7210 | } | |
28e94949 | 7211 | |
c906108c SS |
7212 | return info_ptr; |
7213 | } | |
7214 | ||
a8329558 KW |
7215 | /* Read an attribute described by an abbreviated attribute. */ |
7216 | ||
fe1b8b76 | 7217 | static gdb_byte * |
a8329558 | 7218 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 7219 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
7220 | { |
7221 | attr->name = abbrev->name; | |
e7c27a73 | 7222 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
7223 | } |
7224 | ||
c906108c SS |
7225 | /* read dwarf information from a buffer */ |
7226 | ||
7227 | static unsigned int | |
fe1b8b76 | 7228 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 7229 | { |
fe1b8b76 | 7230 | return bfd_get_8 (abfd, buf); |
c906108c SS |
7231 | } |
7232 | ||
7233 | static int | |
fe1b8b76 | 7234 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 7235 | { |
fe1b8b76 | 7236 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
7237 | } |
7238 | ||
7239 | static unsigned int | |
fe1b8b76 | 7240 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 7241 | { |
fe1b8b76 | 7242 | return bfd_get_16 (abfd, buf); |
c906108c SS |
7243 | } |
7244 | ||
7245 | static int | |
fe1b8b76 | 7246 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 7247 | { |
fe1b8b76 | 7248 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
7249 | } |
7250 | ||
7251 | static unsigned int | |
fe1b8b76 | 7252 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 7253 | { |
fe1b8b76 | 7254 | return bfd_get_32 (abfd, buf); |
c906108c SS |
7255 | } |
7256 | ||
7257 | static int | |
fe1b8b76 | 7258 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 7259 | { |
fe1b8b76 | 7260 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
7261 | } |
7262 | ||
93311388 | 7263 | static ULONGEST |
fe1b8b76 | 7264 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 7265 | { |
fe1b8b76 | 7266 | return bfd_get_64 (abfd, buf); |
c906108c SS |
7267 | } |
7268 | ||
7269 | static CORE_ADDR | |
fe1b8b76 | 7270 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 7271 | unsigned int *bytes_read) |
c906108c | 7272 | { |
e7c27a73 | 7273 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
7274 | CORE_ADDR retval = 0; |
7275 | ||
107d2387 | 7276 | if (cu_header->signed_addr_p) |
c906108c | 7277 | { |
107d2387 AC |
7278 | switch (cu_header->addr_size) |
7279 | { | |
7280 | case 2: | |
fe1b8b76 | 7281 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
7282 | break; |
7283 | case 4: | |
fe1b8b76 | 7284 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
7285 | break; |
7286 | case 8: | |
fe1b8b76 | 7287 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
7288 | break; |
7289 | default: | |
8e65ff28 | 7290 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7291 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 7292 | bfd_get_filename (abfd)); |
107d2387 AC |
7293 | } |
7294 | } | |
7295 | else | |
7296 | { | |
7297 | switch (cu_header->addr_size) | |
7298 | { | |
7299 | case 2: | |
fe1b8b76 | 7300 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
7301 | break; |
7302 | case 4: | |
fe1b8b76 | 7303 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
7304 | break; |
7305 | case 8: | |
fe1b8b76 | 7306 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
7307 | break; |
7308 | default: | |
8e65ff28 | 7309 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7310 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 7311 | bfd_get_filename (abfd)); |
107d2387 | 7312 | } |
c906108c | 7313 | } |
64367e0a | 7314 | |
107d2387 AC |
7315 | *bytes_read = cu_header->addr_size; |
7316 | return retval; | |
c906108c SS |
7317 | } |
7318 | ||
f7ef9339 | 7319 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
7320 | specification allows the initial length to take up either 4 bytes |
7321 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
7322 | bytes describe the length and all offsets will be 8 bytes in length | |
7323 | instead of 4. | |
7324 | ||
f7ef9339 KB |
7325 | An older, non-standard 64-bit format is also handled by this |
7326 | function. The older format in question stores the initial length | |
7327 | as an 8-byte quantity without an escape value. Lengths greater | |
7328 | than 2^32 aren't very common which means that the initial 4 bytes | |
7329 | is almost always zero. Since a length value of zero doesn't make | |
7330 | sense for the 32-bit format, this initial zero can be considered to | |
7331 | be an escape value which indicates the presence of the older 64-bit | |
7332 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
7333 | greater than 4GB. If it becomes necessary to handle lengths |
7334 | somewhat larger than 4GB, we could allow other small values (such | |
7335 | as the non-sensical values of 1, 2, and 3) to also be used as | |
7336 | escape values indicating the presence of the old format. | |
f7ef9339 | 7337 | |
917c78fc MK |
7338 | The value returned via bytes_read should be used to increment the |
7339 | relevant pointer after calling read_initial_length(). | |
c764a876 | 7340 | |
613e1657 KB |
7341 | [ Note: read_initial_length() and read_offset() are based on the |
7342 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 7343 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
7344 | from: |
7345 | ||
f7ef9339 | 7346 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
7347 | |
7348 | This document is only a draft and is subject to change. (So beware.) | |
7349 | ||
f7ef9339 | 7350 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
7351 | determined empirically by examining 64-bit ELF files produced by |
7352 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
7353 | |
7354 | - Kevin, July 16, 2002 | |
613e1657 KB |
7355 | ] */ |
7356 | ||
7357 | static LONGEST | |
c764a876 | 7358 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 7359 | { |
fe1b8b76 | 7360 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 7361 | |
dd373385 | 7362 | if (length == 0xffffffff) |
613e1657 | 7363 | { |
fe1b8b76 | 7364 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 7365 | *bytes_read = 12; |
613e1657 | 7366 | } |
dd373385 | 7367 | else if (length == 0) |
f7ef9339 | 7368 | { |
dd373385 | 7369 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 7370 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 7371 | *bytes_read = 8; |
f7ef9339 | 7372 | } |
613e1657 KB |
7373 | else |
7374 | { | |
7375 | *bytes_read = 4; | |
613e1657 KB |
7376 | } |
7377 | ||
c764a876 DE |
7378 | return length; |
7379 | } | |
dd373385 | 7380 | |
c764a876 DE |
7381 | /* Cover function for read_initial_length. |
7382 | Returns the length of the object at BUF, and stores the size of the | |
7383 | initial length in *BYTES_READ and stores the size that offsets will be in | |
7384 | *OFFSET_SIZE. | |
7385 | If the initial length size is not equivalent to that specified in | |
7386 | CU_HEADER then issue a complaint. | |
7387 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 7388 | |
c764a876 DE |
7389 | static LONGEST |
7390 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
7391 | const struct comp_unit_head *cu_header, | |
7392 | unsigned int *bytes_read, | |
7393 | unsigned int *offset_size) | |
7394 | { | |
7395 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
7396 | ||
7397 | gdb_assert (cu_header->initial_length_size == 4 | |
7398 | || cu_header->initial_length_size == 8 | |
7399 | || cu_header->initial_length_size == 12); | |
7400 | ||
7401 | if (cu_header->initial_length_size != *bytes_read) | |
7402 | complaint (&symfile_complaints, | |
7403 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 7404 | |
c764a876 | 7405 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 7406 | return length; |
613e1657 KB |
7407 | } |
7408 | ||
7409 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 7410 | given by cu_header->offset_size. */ |
613e1657 KB |
7411 | |
7412 | static LONGEST | |
fe1b8b76 | 7413 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 7414 | unsigned int *bytes_read) |
c764a876 DE |
7415 | { |
7416 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
7417 | *bytes_read = cu_header->offset_size; | |
7418 | return offset; | |
7419 | } | |
7420 | ||
7421 | /* Read an offset from the data stream. */ | |
7422 | ||
7423 | static LONGEST | |
7424 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
7425 | { |
7426 | LONGEST retval = 0; | |
7427 | ||
c764a876 | 7428 | switch (offset_size) |
613e1657 KB |
7429 | { |
7430 | case 4: | |
fe1b8b76 | 7431 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
7432 | break; |
7433 | case 8: | |
fe1b8b76 | 7434 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
7435 | break; |
7436 | default: | |
8e65ff28 | 7437 | internal_error (__FILE__, __LINE__, |
c764a876 | 7438 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 7439 | bfd_get_filename (abfd)); |
613e1657 KB |
7440 | } |
7441 | ||
917c78fc | 7442 | return retval; |
613e1657 KB |
7443 | } |
7444 | ||
fe1b8b76 JB |
7445 | static gdb_byte * |
7446 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
7447 | { |
7448 | /* If the size of a host char is 8 bits, we can return a pointer | |
7449 | to the buffer, otherwise we have to copy the data to a buffer | |
7450 | allocated on the temporary obstack. */ | |
4bdf3d34 | 7451 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 7452 | return buf; |
c906108c SS |
7453 | } |
7454 | ||
7455 | static char * | |
fe1b8b76 | 7456 | read_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
7457 | { |
7458 | /* If the size of a host char is 8 bits, we can return a pointer | |
7459 | to the string, otherwise we have to copy the string to a buffer | |
7460 | allocated on the temporary obstack. */ | |
4bdf3d34 | 7461 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
7462 | if (*buf == '\0') |
7463 | { | |
7464 | *bytes_read_ptr = 1; | |
7465 | return NULL; | |
7466 | } | |
fe1b8b76 JB |
7467 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
7468 | return (char *) buf; | |
4bdf3d34 JJ |
7469 | } |
7470 | ||
7471 | static char * | |
fe1b8b76 | 7472 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
7473 | const struct comp_unit_head *cu_header, |
7474 | unsigned int *bytes_read_ptr) | |
7475 | { | |
c764a876 | 7476 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); |
c906108c | 7477 | |
be391dca | 7478 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 7479 | if (dwarf2_per_objfile->str.buffer == NULL) |
c906108c | 7480 | { |
8a3fe4f8 | 7481 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 7482 | bfd_get_filename (abfd)); |
4bdf3d34 | 7483 | return NULL; |
c906108c | 7484 | } |
dce234bc | 7485 | if (str_offset >= dwarf2_per_objfile->str.size) |
c906108c | 7486 | { |
8a3fe4f8 | 7487 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 7488 | bfd_get_filename (abfd)); |
c906108c SS |
7489 | return NULL; |
7490 | } | |
4bdf3d34 | 7491 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 7492 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 7493 | return NULL; |
dce234bc | 7494 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
7495 | } |
7496 | ||
ce5d95e1 | 7497 | static unsigned long |
fe1b8b76 | 7498 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 7499 | { |
ce5d95e1 JB |
7500 | unsigned long result; |
7501 | unsigned int num_read; | |
c906108c SS |
7502 | int i, shift; |
7503 | unsigned char byte; | |
7504 | ||
7505 | result = 0; | |
7506 | shift = 0; | |
7507 | num_read = 0; | |
7508 | i = 0; | |
7509 | while (1) | |
7510 | { | |
fe1b8b76 | 7511 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
7512 | buf++; |
7513 | num_read++; | |
ce5d95e1 | 7514 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
7515 | if ((byte & 128) == 0) |
7516 | { | |
7517 | break; | |
7518 | } | |
7519 | shift += 7; | |
7520 | } | |
7521 | *bytes_read_ptr = num_read; | |
7522 | return result; | |
7523 | } | |
7524 | ||
ce5d95e1 | 7525 | static long |
fe1b8b76 | 7526 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 7527 | { |
ce5d95e1 | 7528 | long result; |
77e0b926 | 7529 | int i, shift, num_read; |
c906108c SS |
7530 | unsigned char byte; |
7531 | ||
7532 | result = 0; | |
7533 | shift = 0; | |
c906108c SS |
7534 | num_read = 0; |
7535 | i = 0; | |
7536 | while (1) | |
7537 | { | |
fe1b8b76 | 7538 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
7539 | buf++; |
7540 | num_read++; | |
ce5d95e1 | 7541 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
7542 | shift += 7; |
7543 | if ((byte & 128) == 0) | |
7544 | { | |
7545 | break; | |
7546 | } | |
7547 | } | |
77e0b926 DJ |
7548 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
7549 | result |= -(((long)1) << shift); | |
c906108c SS |
7550 | *bytes_read_ptr = num_read; |
7551 | return result; | |
7552 | } | |
7553 | ||
4bb7a0a7 DJ |
7554 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
7555 | ||
fe1b8b76 JB |
7556 | static gdb_byte * |
7557 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
7558 | { |
7559 | int byte; | |
7560 | ||
7561 | while (1) | |
7562 | { | |
fe1b8b76 | 7563 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
7564 | buf++; |
7565 | if ((byte & 128) == 0) | |
7566 | return buf; | |
7567 | } | |
7568 | } | |
7569 | ||
c906108c | 7570 | static void |
e142c38c | 7571 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
7572 | { |
7573 | switch (lang) | |
7574 | { | |
7575 | case DW_LANG_C89: | |
76bee0cc | 7576 | case DW_LANG_C99: |
c906108c | 7577 | case DW_LANG_C: |
e142c38c | 7578 | cu->language = language_c; |
c906108c SS |
7579 | break; |
7580 | case DW_LANG_C_plus_plus: | |
e142c38c | 7581 | cu->language = language_cplus; |
c906108c SS |
7582 | break; |
7583 | case DW_LANG_Fortran77: | |
7584 | case DW_LANG_Fortran90: | |
b21b22e0 | 7585 | case DW_LANG_Fortran95: |
e142c38c | 7586 | cu->language = language_fortran; |
c906108c SS |
7587 | break; |
7588 | case DW_LANG_Mips_Assembler: | |
e142c38c | 7589 | cu->language = language_asm; |
c906108c | 7590 | break; |
bebd888e | 7591 | case DW_LANG_Java: |
e142c38c | 7592 | cu->language = language_java; |
bebd888e | 7593 | break; |
c906108c | 7594 | case DW_LANG_Ada83: |
8aaf0b47 | 7595 | case DW_LANG_Ada95: |
bc5f45f8 JB |
7596 | cu->language = language_ada; |
7597 | break; | |
72019c9c GM |
7598 | case DW_LANG_Modula2: |
7599 | cu->language = language_m2; | |
7600 | break; | |
fe8e67fd PM |
7601 | case DW_LANG_Pascal83: |
7602 | cu->language = language_pascal; | |
7603 | break; | |
22566fbd DJ |
7604 | case DW_LANG_ObjC: |
7605 | cu->language = language_objc; | |
7606 | break; | |
c906108c SS |
7607 | case DW_LANG_Cobol74: |
7608 | case DW_LANG_Cobol85: | |
c906108c | 7609 | default: |
e142c38c | 7610 | cu->language = language_minimal; |
c906108c SS |
7611 | break; |
7612 | } | |
e142c38c | 7613 | cu->language_defn = language_def (cu->language); |
c906108c SS |
7614 | } |
7615 | ||
7616 | /* Return the named attribute or NULL if not there. */ | |
7617 | ||
7618 | static struct attribute * | |
e142c38c | 7619 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
7620 | { |
7621 | unsigned int i; | |
7622 | struct attribute *spec = NULL; | |
7623 | ||
7624 | for (i = 0; i < die->num_attrs; ++i) | |
7625 | { | |
7626 | if (die->attrs[i].name == name) | |
10b3939b | 7627 | return &die->attrs[i]; |
c906108c SS |
7628 | if (die->attrs[i].name == DW_AT_specification |
7629 | || die->attrs[i].name == DW_AT_abstract_origin) | |
7630 | spec = &die->attrs[i]; | |
7631 | } | |
c906108c | 7632 | |
10b3939b | 7633 | if (spec) |
f2f0e013 DJ |
7634 | { |
7635 | die = follow_die_ref (die, spec, &cu); | |
7636 | return dwarf2_attr (die, name, cu); | |
7637 | } | |
c5aa993b | 7638 | |
c906108c SS |
7639 | return NULL; |
7640 | } | |
7641 | ||
348e048f DE |
7642 | /* Return the named attribute or NULL if not there, |
7643 | but do not follow DW_AT_specification, etc. | |
7644 | This is for use in contexts where we're reading .debug_types dies. | |
7645 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
7646 | back up the chain, and we want to go down. */ | |
7647 | ||
7648 | static struct attribute * | |
7649 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
7650 | struct dwarf2_cu *cu) | |
7651 | { | |
7652 | unsigned int i; | |
7653 | ||
7654 | for (i = 0; i < die->num_attrs; ++i) | |
7655 | if (die->attrs[i].name == name) | |
7656 | return &die->attrs[i]; | |
7657 | ||
7658 | return NULL; | |
7659 | } | |
7660 | ||
05cf31d1 JB |
7661 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
7662 | and holds a non-zero value. This function should only be used for | |
7663 | DW_FORM_flag attributes. */ | |
7664 | ||
7665 | static int | |
7666 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
7667 | { | |
7668 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
7669 | ||
7670 | return (attr && DW_UNSND (attr)); | |
7671 | } | |
7672 | ||
3ca72b44 | 7673 | static int |
e142c38c | 7674 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 7675 | { |
05cf31d1 JB |
7676 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
7677 | which value is non-zero. However, we have to be careful with | |
7678 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
7679 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
7680 | end up accidently finding a declaration attribute that belongs | |
7681 | to a different DIE referenced by the specification attribute, | |
7682 | even though the given DIE does not have a declaration attribute. */ | |
7683 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
7684 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
7685 | } |
7686 | ||
63d06c5c | 7687 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 7688 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
7689 | containing the return value on output. If there is no |
7690 | specification, but there is an abstract origin, that is | |
7691 | returned. */ | |
63d06c5c DC |
7692 | |
7693 | static struct die_info * | |
f2f0e013 | 7694 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 7695 | { |
f2f0e013 DJ |
7696 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
7697 | *spec_cu); | |
63d06c5c | 7698 | |
edb3359d DJ |
7699 | if (spec_attr == NULL) |
7700 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
7701 | ||
63d06c5c DC |
7702 | if (spec_attr == NULL) |
7703 | return NULL; | |
7704 | else | |
f2f0e013 | 7705 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 7706 | } |
c906108c | 7707 | |
debd256d JB |
7708 | /* Free the line_header structure *LH, and any arrays and strings it |
7709 | refers to. */ | |
7710 | static void | |
7711 | free_line_header (struct line_header *lh) | |
7712 | { | |
7713 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 7714 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
7715 | |
7716 | /* Remember that all the lh->file_names[i].name pointers are | |
7717 | pointers into debug_line_buffer, and don't need to be freed. */ | |
7718 | if (lh->file_names) | |
a8bc7b56 | 7719 | xfree (lh->file_names); |
debd256d JB |
7720 | |
7721 | /* Similarly for the include directory names. */ | |
7722 | if (lh->include_dirs) | |
a8bc7b56 | 7723 | xfree (lh->include_dirs); |
debd256d | 7724 | |
a8bc7b56 | 7725 | xfree (lh); |
debd256d JB |
7726 | } |
7727 | ||
7728 | ||
7729 | /* Add an entry to LH's include directory table. */ | |
7730 | static void | |
7731 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 7732 | { |
debd256d JB |
7733 | /* Grow the array if necessary. */ |
7734 | if (lh->include_dirs_size == 0) | |
c5aa993b | 7735 | { |
debd256d JB |
7736 | lh->include_dirs_size = 1; /* for testing */ |
7737 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
7738 | * sizeof (*lh->include_dirs)); | |
7739 | } | |
7740 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
7741 | { | |
7742 | lh->include_dirs_size *= 2; | |
7743 | lh->include_dirs = xrealloc (lh->include_dirs, | |
7744 | (lh->include_dirs_size | |
7745 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 7746 | } |
c906108c | 7747 | |
debd256d JB |
7748 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
7749 | } | |
7750 | ||
7751 | ||
7752 | /* Add an entry to LH's file name table. */ | |
7753 | static void | |
7754 | add_file_name (struct line_header *lh, | |
7755 | char *name, | |
7756 | unsigned int dir_index, | |
7757 | unsigned int mod_time, | |
7758 | unsigned int length) | |
7759 | { | |
7760 | struct file_entry *fe; | |
7761 | ||
7762 | /* Grow the array if necessary. */ | |
7763 | if (lh->file_names_size == 0) | |
7764 | { | |
7765 | lh->file_names_size = 1; /* for testing */ | |
7766 | lh->file_names = xmalloc (lh->file_names_size | |
7767 | * sizeof (*lh->file_names)); | |
7768 | } | |
7769 | else if (lh->num_file_names >= lh->file_names_size) | |
7770 | { | |
7771 | lh->file_names_size *= 2; | |
7772 | lh->file_names = xrealloc (lh->file_names, | |
7773 | (lh->file_names_size | |
7774 | * sizeof (*lh->file_names))); | |
7775 | } | |
7776 | ||
7777 | fe = &lh->file_names[lh->num_file_names++]; | |
7778 | fe->name = name; | |
7779 | fe->dir_index = dir_index; | |
7780 | fe->mod_time = mod_time; | |
7781 | fe->length = length; | |
aaa75496 | 7782 | fe->included_p = 0; |
cb1df416 | 7783 | fe->symtab = NULL; |
debd256d JB |
7784 | } |
7785 | ||
7786 | ||
7787 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
7788 | .debug_line, according to the endianness of ABFD. Return a pointer |
7789 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
7790 | |
7791 | NOTE: the strings in the include directory and file name tables of | |
7792 | the returned object point into debug_line_buffer, and must not be | |
7793 | freed. */ | |
7794 | static struct line_header * | |
7795 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 7796 | struct dwarf2_cu *cu) |
debd256d JB |
7797 | { |
7798 | struct cleanup *back_to; | |
7799 | struct line_header *lh; | |
fe1b8b76 | 7800 | gdb_byte *line_ptr; |
c764a876 | 7801 | unsigned int bytes_read, offset_size; |
debd256d JB |
7802 | int i; |
7803 | char *cur_dir, *cur_file; | |
7804 | ||
be391dca | 7805 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->line); |
dce234bc | 7806 | if (dwarf2_per_objfile->line.buffer == NULL) |
debd256d | 7807 | { |
e2e0b3e5 | 7808 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
7809 | return 0; |
7810 | } | |
7811 | ||
a738430d MK |
7812 | /* Make sure that at least there's room for the total_length field. |
7813 | That could be 12 bytes long, but we're just going to fudge that. */ | |
dce234bc | 7814 | if (offset + 4 >= dwarf2_per_objfile->line.size) |
debd256d | 7815 | { |
4d3c2250 | 7816 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
7817 | return 0; |
7818 | } | |
7819 | ||
7820 | lh = xmalloc (sizeof (*lh)); | |
7821 | memset (lh, 0, sizeof (*lh)); | |
7822 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
7823 | (void *) lh); | |
7824 | ||
dce234bc | 7825 | line_ptr = dwarf2_per_objfile->line.buffer + offset; |
debd256d | 7826 | |
a738430d | 7827 | /* Read in the header. */ |
dd373385 | 7828 | lh->total_length = |
c764a876 DE |
7829 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
7830 | &bytes_read, &offset_size); | |
debd256d | 7831 | line_ptr += bytes_read; |
dce234bc PP |
7832 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line.buffer |
7833 | + dwarf2_per_objfile->line.size)) | |
debd256d | 7834 | { |
4d3c2250 | 7835 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
7836 | return 0; |
7837 | } | |
7838 | lh->statement_program_end = line_ptr + lh->total_length; | |
7839 | lh->version = read_2_bytes (abfd, line_ptr); | |
7840 | line_ptr += 2; | |
c764a876 DE |
7841 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
7842 | line_ptr += offset_size; | |
debd256d JB |
7843 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
7844 | line_ptr += 1; | |
7845 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
7846 | line_ptr += 1; | |
7847 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
7848 | line_ptr += 1; | |
7849 | lh->line_range = read_1_byte (abfd, line_ptr); | |
7850 | line_ptr += 1; | |
7851 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
7852 | line_ptr += 1; | |
7853 | lh->standard_opcode_lengths | |
fe1b8b76 | 7854 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
7855 | |
7856 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
7857 | for (i = 1; i < lh->opcode_base; ++i) | |
7858 | { | |
7859 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
7860 | line_ptr += 1; | |
7861 | } | |
7862 | ||
a738430d | 7863 | /* Read directory table. */ |
debd256d JB |
7864 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
7865 | { | |
7866 | line_ptr += bytes_read; | |
7867 | add_include_dir (lh, cur_dir); | |
7868 | } | |
7869 | line_ptr += bytes_read; | |
7870 | ||
a738430d | 7871 | /* Read file name table. */ |
debd256d JB |
7872 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
7873 | { | |
7874 | unsigned int dir_index, mod_time, length; | |
7875 | ||
7876 | line_ptr += bytes_read; | |
7877 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7878 | line_ptr += bytes_read; | |
7879 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7880 | line_ptr += bytes_read; | |
7881 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7882 | line_ptr += bytes_read; | |
7883 | ||
7884 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
7885 | } | |
7886 | line_ptr += bytes_read; | |
7887 | lh->statement_program_start = line_ptr; | |
7888 | ||
dce234bc PP |
7889 | if (line_ptr > (dwarf2_per_objfile->line.buffer |
7890 | + dwarf2_per_objfile->line.size)) | |
4d3c2250 | 7891 | complaint (&symfile_complaints, |
e2e0b3e5 | 7892 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
7893 | |
7894 | discard_cleanups (back_to); | |
7895 | return lh; | |
7896 | } | |
c906108c | 7897 | |
5fb290d7 DJ |
7898 | /* This function exists to work around a bug in certain compilers |
7899 | (particularly GCC 2.95), in which the first line number marker of a | |
7900 | function does not show up until after the prologue, right before | |
7901 | the second line number marker. This function shifts ADDRESS down | |
7902 | to the beginning of the function if necessary, and is called on | |
7903 | addresses passed to record_line. */ | |
7904 | ||
7905 | static CORE_ADDR | |
e142c38c | 7906 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
7907 | { |
7908 | struct function_range *fn; | |
7909 | ||
7910 | /* Find the function_range containing address. */ | |
e142c38c | 7911 | if (!cu->first_fn) |
5fb290d7 DJ |
7912 | return address; |
7913 | ||
e142c38c DJ |
7914 | if (!cu->cached_fn) |
7915 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 7916 | |
e142c38c | 7917 | fn = cu->cached_fn; |
5fb290d7 DJ |
7918 | while (fn) |
7919 | if (fn->lowpc <= address && fn->highpc > address) | |
7920 | goto found; | |
7921 | else | |
7922 | fn = fn->next; | |
7923 | ||
e142c38c DJ |
7924 | fn = cu->first_fn; |
7925 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
7926 | if (fn->lowpc <= address && fn->highpc > address) |
7927 | goto found; | |
7928 | else | |
7929 | fn = fn->next; | |
7930 | ||
7931 | return address; | |
7932 | ||
7933 | found: | |
7934 | if (fn->seen_line) | |
7935 | return address; | |
7936 | if (address != fn->lowpc) | |
4d3c2250 | 7937 | complaint (&symfile_complaints, |
e2e0b3e5 | 7938 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 7939 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
7940 | fn->seen_line = 1; |
7941 | return fn->lowpc; | |
7942 | } | |
7943 | ||
aaa75496 JB |
7944 | /* Decode the Line Number Program (LNP) for the given line_header |
7945 | structure and CU. The actual information extracted and the type | |
7946 | of structures created from the LNP depends on the value of PST. | |
7947 | ||
7948 | 1. If PST is NULL, then this procedure uses the data from the program | |
7949 | to create all necessary symbol tables, and their linetables. | |
7950 | The compilation directory of the file is passed in COMP_DIR, | |
7951 | and must not be NULL. | |
7952 | ||
7953 | 2. If PST is not NULL, this procedure reads the program to determine | |
7954 | the list of files included by the unit represented by PST, and | |
7955 | builds all the associated partial symbol tables. In this case, | |
7956 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
7957 | is not used to compute the full name of the symtab, and therefore | |
7958 | omitting it when building the partial symtab does not introduce | |
7959 | the potential for inconsistency - a partial symtab and its associated | |
7960 | symbtab having a different fullname -). */ | |
debd256d | 7961 | |
c906108c | 7962 | static void |
debd256d | 7963 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 7964 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 7965 | { |
a8c50c1f | 7966 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 7967 | gdb_byte *line_end; |
a8c50c1f | 7968 | unsigned int bytes_read, extended_len; |
c906108c | 7969 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
7970 | CORE_ADDR baseaddr; |
7971 | struct objfile *objfile = cu->objfile; | |
fbf65064 | 7972 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 7973 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 7974 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
e142c38c DJ |
7975 | |
7976 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 7977 | |
debd256d JB |
7978 | line_ptr = lh->statement_program_start; |
7979 | line_end = lh->statement_program_end; | |
c906108c SS |
7980 | |
7981 | /* Read the statement sequences until there's nothing left. */ | |
7982 | while (line_ptr < line_end) | |
7983 | { | |
7984 | /* state machine registers */ | |
7985 | CORE_ADDR address = 0; | |
7986 | unsigned int file = 1; | |
7987 | unsigned int line = 1; | |
7988 | unsigned int column = 0; | |
debd256d | 7989 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
7990 | int basic_block = 0; |
7991 | int end_sequence = 0; | |
fbf65064 | 7992 | CORE_ADDR addr; |
c906108c | 7993 | |
aaa75496 | 7994 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 7995 | { |
aaa75496 | 7996 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
7997 | /* lh->include_dirs and lh->file_names are 0-based, but the |
7998 | directory and file name numbers in the statement program | |
7999 | are 1-based. */ | |
8000 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 8001 | char *dir = NULL; |
a738430d | 8002 | |
debd256d JB |
8003 | if (fe->dir_index) |
8004 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
8005 | |
8006 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
8007 | } |
8008 | ||
a738430d | 8009 | /* Decode the table. */ |
c5aa993b | 8010 | while (!end_sequence) |
c906108c SS |
8011 | { |
8012 | op_code = read_1_byte (abfd, line_ptr); | |
8013 | line_ptr += 1; | |
59205f5a JB |
8014 | if (line_ptr > line_end) |
8015 | { | |
8016 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
8017 | break; | |
8018 | } | |
9aa1fe7e | 8019 | |
debd256d | 8020 | if (op_code >= lh->opcode_base) |
a738430d MK |
8021 | { |
8022 | /* Special operand. */ | |
debd256d JB |
8023 | adj_opcode = op_code - lh->opcode_base; |
8024 | address += (adj_opcode / lh->line_range) | |
8025 | * lh->minimum_instruction_length; | |
8026 | line += lh->line_base + (adj_opcode % lh->line_range); | |
59205f5a | 8027 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
8028 | dwarf2_debug_line_missing_file_complaint (); |
8029 | else | |
8030 | { | |
8031 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 8032 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
8033 | { |
8034 | if (last_subfile != current_subfile) | |
8035 | { | |
8036 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
8037 | if (last_subfile) | |
8038 | record_line (last_subfile, 0, addr); | |
8039 | last_subfile = current_subfile; | |
8040 | } | |
25e43795 | 8041 | /* Append row to matrix using current values. */ |
fbf65064 UW |
8042 | addr = check_cu_functions (address, cu); |
8043 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
8044 | record_line (current_subfile, line, addr); | |
366da635 | 8045 | } |
25e43795 | 8046 | } |
ca5f395d | 8047 | basic_block = 0; |
9aa1fe7e GK |
8048 | } |
8049 | else switch (op_code) | |
c906108c SS |
8050 | { |
8051 | case DW_LNS_extended_op: | |
a8c50c1f | 8052 | extended_len = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
473b7be6 | 8053 | line_ptr += bytes_read; |
a8c50c1f | 8054 | extended_end = line_ptr + extended_len; |
c906108c SS |
8055 | extended_op = read_1_byte (abfd, line_ptr); |
8056 | line_ptr += 1; | |
8057 | switch (extended_op) | |
8058 | { | |
8059 | case DW_LNE_end_sequence: | |
8060 | end_sequence = 1; | |
c906108c SS |
8061 | break; |
8062 | case DW_LNE_set_address: | |
e7c27a73 | 8063 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
8064 | line_ptr += bytes_read; |
8065 | address += baseaddr; | |
c906108c SS |
8066 | break; |
8067 | case DW_LNE_define_file: | |
debd256d JB |
8068 | { |
8069 | char *cur_file; | |
8070 | unsigned int dir_index, mod_time, length; | |
8071 | ||
8072 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
8073 | line_ptr += bytes_read; | |
8074 | dir_index = | |
8075 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
8076 | line_ptr += bytes_read; | |
8077 | mod_time = | |
8078 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
8079 | line_ptr += bytes_read; | |
8080 | length = | |
8081 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
8082 | line_ptr += bytes_read; | |
8083 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
8084 | } | |
c906108c | 8085 | break; |
d0c6ba3d CC |
8086 | case DW_LNE_set_discriminator: |
8087 | /* The discriminator is not interesting to the debugger; | |
8088 | just ignore it. */ | |
8089 | line_ptr = extended_end; | |
8090 | break; | |
c906108c | 8091 | default: |
4d3c2250 | 8092 | complaint (&symfile_complaints, |
e2e0b3e5 | 8093 | _("mangled .debug_line section")); |
debd256d | 8094 | return; |
c906108c | 8095 | } |
a8c50c1f DJ |
8096 | /* Make sure that we parsed the extended op correctly. If e.g. |
8097 | we expected a different address size than the producer used, | |
8098 | we may have read the wrong number of bytes. */ | |
8099 | if (line_ptr != extended_end) | |
8100 | { | |
8101 | complaint (&symfile_complaints, | |
8102 | _("mangled .debug_line section")); | |
8103 | return; | |
8104 | } | |
c906108c SS |
8105 | break; |
8106 | case DW_LNS_copy: | |
59205f5a | 8107 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
8108 | dwarf2_debug_line_missing_file_complaint (); |
8109 | else | |
366da635 | 8110 | { |
25e43795 | 8111 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 8112 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
8113 | { |
8114 | if (last_subfile != current_subfile) | |
8115 | { | |
8116 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
8117 | if (last_subfile) | |
8118 | record_line (last_subfile, 0, addr); | |
8119 | last_subfile = current_subfile; | |
8120 | } | |
8121 | addr = check_cu_functions (address, cu); | |
8122 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
8123 | record_line (current_subfile, line, addr); | |
8124 | } | |
366da635 | 8125 | } |
c906108c SS |
8126 | basic_block = 0; |
8127 | break; | |
8128 | case DW_LNS_advance_pc: | |
debd256d | 8129 | address += lh->minimum_instruction_length |
c906108c SS |
8130 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
8131 | line_ptr += bytes_read; | |
8132 | break; | |
8133 | case DW_LNS_advance_line: | |
8134 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
8135 | line_ptr += bytes_read; | |
8136 | break; | |
8137 | case DW_LNS_set_file: | |
debd256d | 8138 | { |
a738430d MK |
8139 | /* The arrays lh->include_dirs and lh->file_names are |
8140 | 0-based, but the directory and file name numbers in | |
8141 | the statement program are 1-based. */ | |
debd256d | 8142 | struct file_entry *fe; |
4f1520fb | 8143 | char *dir = NULL; |
a738430d | 8144 | |
debd256d JB |
8145 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
8146 | line_ptr += bytes_read; | |
59205f5a | 8147 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
8148 | dwarf2_debug_line_missing_file_complaint (); |
8149 | else | |
8150 | { | |
8151 | fe = &lh->file_names[file - 1]; | |
8152 | if (fe->dir_index) | |
8153 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8154 | if (!decode_for_pst_p) | |
8155 | { | |
8156 | last_subfile = current_subfile; | |
8157 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
8158 | } | |
8159 | } | |
debd256d | 8160 | } |
c906108c SS |
8161 | break; |
8162 | case DW_LNS_set_column: | |
8163 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
8164 | line_ptr += bytes_read; | |
8165 | break; | |
8166 | case DW_LNS_negate_stmt: | |
8167 | is_stmt = (!is_stmt); | |
8168 | break; | |
8169 | case DW_LNS_set_basic_block: | |
8170 | basic_block = 1; | |
8171 | break; | |
c2c6d25f JM |
8172 | /* Add to the address register of the state machine the |
8173 | address increment value corresponding to special opcode | |
a738430d MK |
8174 | 255. I.e., this value is scaled by the minimum |
8175 | instruction length since special opcode 255 would have | |
8176 | scaled the the increment. */ | |
c906108c | 8177 | case DW_LNS_const_add_pc: |
debd256d JB |
8178 | address += (lh->minimum_instruction_length |
8179 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
8180 | break; |
8181 | case DW_LNS_fixed_advance_pc: | |
8182 | address += read_2_bytes (abfd, line_ptr); | |
8183 | line_ptr += 2; | |
8184 | break; | |
9aa1fe7e | 8185 | default: |
a738430d MK |
8186 | { |
8187 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 8188 | int i; |
a738430d | 8189 | |
debd256d | 8190 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
8191 | { |
8192 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
8193 | line_ptr += bytes_read; | |
8194 | } | |
8195 | } | |
c906108c SS |
8196 | } |
8197 | } | |
59205f5a JB |
8198 | if (lh->num_file_names < file || file == 0) |
8199 | dwarf2_debug_line_missing_file_complaint (); | |
8200 | else | |
8201 | { | |
8202 | lh->file_names[file - 1].included_p = 1; | |
8203 | if (!decode_for_pst_p) | |
fbf65064 UW |
8204 | { |
8205 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
8206 | record_line (current_subfile, 0, addr); | |
8207 | } | |
59205f5a | 8208 | } |
c906108c | 8209 | } |
aaa75496 JB |
8210 | |
8211 | if (decode_for_pst_p) | |
8212 | { | |
8213 | int file_index; | |
8214 | ||
8215 | /* Now that we're done scanning the Line Header Program, we can | |
8216 | create the psymtab of each included file. */ | |
8217 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
8218 | if (lh->file_names[file_index].included_p == 1) | |
8219 | { | |
5b5464ad JB |
8220 | const struct file_entry fe = lh->file_names [file_index]; |
8221 | char *include_name = fe.name; | |
8222 | char *dir_name = NULL; | |
8223 | char *pst_filename = pst->filename; | |
8224 | ||
8225 | if (fe.dir_index) | |
8226 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
8227 | ||
8228 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
8229 | { | |
1754f103 MK |
8230 | include_name = concat (dir_name, SLASH_STRING, |
8231 | include_name, (char *)NULL); | |
5b5464ad JB |
8232 | make_cleanup (xfree, include_name); |
8233 | } | |
8234 | ||
8235 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
8236 | { | |
1754f103 MK |
8237 | pst_filename = concat (pst->dirname, SLASH_STRING, |
8238 | pst_filename, (char *)NULL); | |
5b5464ad JB |
8239 | make_cleanup (xfree, pst_filename); |
8240 | } | |
8241 | ||
8242 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
8243 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
8244 | } | |
8245 | } | |
cb1df416 DJ |
8246 | else |
8247 | { | |
8248 | /* Make sure a symtab is created for every file, even files | |
8249 | which contain only variables (i.e. no code with associated | |
8250 | line numbers). */ | |
8251 | ||
8252 | int i; | |
8253 | struct file_entry *fe; | |
8254 | ||
8255 | for (i = 0; i < lh->num_file_names; i++) | |
8256 | { | |
8257 | char *dir = NULL; | |
8258 | fe = &lh->file_names[i]; | |
8259 | if (fe->dir_index) | |
8260 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8261 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
8262 | ||
8263 | /* Skip the main file; we don't need it, and it must be | |
8264 | allocated last, so that it will show up before the | |
8265 | non-primary symtabs in the objfile's symtab list. */ | |
8266 | if (current_subfile == first_subfile) | |
8267 | continue; | |
8268 | ||
8269 | if (current_subfile->symtab == NULL) | |
8270 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
8271 | cu->objfile); | |
8272 | fe->symtab = current_subfile->symtab; | |
8273 | } | |
8274 | } | |
c906108c SS |
8275 | } |
8276 | ||
8277 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
8278 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
8279 | or NULL if not known. COMP_DIR is the compilation directory for the |
8280 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
8281 | This routine tries to keep line numbers from identical absolute and |
8282 | relative file names in a common subfile. | |
8283 | ||
8284 | Using the `list' example from the GDB testsuite, which resides in | |
8285 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
8286 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
8287 | ||
c5aa993b JM |
8288 | DW_AT_name: /srcdir/list0.c |
8289 | DW_AT_comp_dir: /compdir | |
357e46e7 | 8290 | files.files[0].name: list0.h |
c5aa993b | 8291 | files.files[0].dir: /srcdir |
357e46e7 | 8292 | files.files[1].name: list0.c |
c5aa993b | 8293 | files.files[1].dir: /srcdir |
c906108c SS |
8294 | |
8295 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
8296 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
8297 | start_subfile will ensure that this happens provided that we pass the | |
8298 | concatenation of files.files[1].dir and files.files[1].name as the | |
8299 | subfile's name. */ | |
c906108c SS |
8300 | |
8301 | static void | |
4f1520fb | 8302 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 8303 | { |
4f1520fb FR |
8304 | char *fullname; |
8305 | ||
8306 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
8307 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
8308 | second argument to start_subfile. To be consistent, we do the | |
8309 | same here. In order not to lose the line information directory, | |
8310 | we concatenate it to the filename when it makes sense. | |
8311 | Note that the Dwarf3 standard says (speaking of filenames in line | |
8312 | information): ``The directory index is ignored for file names | |
8313 | that represent full path names''. Thus ignoring dirname in the | |
8314 | `else' branch below isn't an issue. */ | |
c906108c | 8315 | |
d5166ae1 | 8316 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
8317 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
8318 | else | |
8319 | fullname = filename; | |
c906108c | 8320 | |
4f1520fb FR |
8321 | start_subfile (fullname, comp_dir); |
8322 | ||
8323 | if (fullname != filename) | |
8324 | xfree (fullname); | |
c906108c SS |
8325 | } |
8326 | ||
4c2df51b DJ |
8327 | static void |
8328 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 8329 | struct dwarf2_cu *cu) |
4c2df51b | 8330 | { |
e7c27a73 DJ |
8331 | struct objfile *objfile = cu->objfile; |
8332 | struct comp_unit_head *cu_header = &cu->header; | |
8333 | ||
4c2df51b DJ |
8334 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
8335 | code here to turn a symbol with DW_AT_external and a | |
8336 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
8337 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
8338 | with some versions of binutils) where shared libraries could have | |
8339 | relocations against symbols in their debug information - the | |
8340 | minimal symbol would have the right address, but the debug info | |
8341 | would not. It's no longer necessary, because we will explicitly | |
8342 | apply relocations when we read in the debug information now. */ | |
8343 | ||
8344 | /* A DW_AT_location attribute with no contents indicates that a | |
8345 | variable has been optimized away. */ | |
8346 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
8347 | { | |
8348 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
8349 | return; | |
8350 | } | |
8351 | ||
8352 | /* Handle one degenerate form of location expression specially, to | |
8353 | preserve GDB's previous behavior when section offsets are | |
8354 | specified. If this is just a DW_OP_addr then mark this symbol | |
8355 | as LOC_STATIC. */ | |
8356 | ||
8357 | if (attr_form_is_block (attr) | |
8358 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
8359 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
8360 | { | |
891d2f0b | 8361 | unsigned int dummy; |
4c2df51b DJ |
8362 | |
8363 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 8364 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 8365 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
8366 | fixup_symbol_section (sym, objfile); |
8367 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
8368 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
8369 | return; |
8370 | } | |
8371 | ||
8372 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
8373 | expression evaluator, and use LOC_COMPUTED only when necessary | |
8374 | (i.e. when the value of a register or memory location is | |
8375 | referenced, or a thread-local block, etc.). Then again, it might | |
8376 | not be worthwhile. I'm assuming that it isn't unless performance | |
8377 | or memory numbers show me otherwise. */ | |
8378 | ||
e7c27a73 | 8379 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
8380 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
8381 | } | |
8382 | ||
c906108c SS |
8383 | /* Given a pointer to a DWARF information entry, figure out if we need |
8384 | to make a symbol table entry for it, and if so, create a new entry | |
8385 | and return a pointer to it. | |
8386 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 8387 | used the passed type. */ |
c906108c SS |
8388 | |
8389 | static struct symbol * | |
e7c27a73 | 8390 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 8391 | { |
e7c27a73 | 8392 | struct objfile *objfile = cu->objfile; |
c906108c SS |
8393 | struct symbol *sym = NULL; |
8394 | char *name; | |
8395 | struct attribute *attr = NULL; | |
8396 | struct attribute *attr2 = NULL; | |
e142c38c | 8397 | CORE_ADDR baseaddr; |
edb3359d | 8398 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
8399 | |
8400 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 8401 | |
94af9270 | 8402 | name = dwarf2_name (die, cu); |
c906108c SS |
8403 | if (name) |
8404 | { | |
94af9270 KS |
8405 | const char *linkagename; |
8406 | ||
4a146b47 | 8407 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
8408 | sizeof (struct symbol)); |
8409 | OBJSTAT (objfile, n_syms++); | |
8410 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
8411 | |
8412 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 8413 | SYMBOL_LANGUAGE (sym) = cu->language; |
94af9270 KS |
8414 | linkagename = dwarf2_physname (name, die, cu); |
8415 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c SS |
8416 | |
8417 | /* Default assumptions. | |
c5aa993b | 8418 | Use the passed type or decode it from the die. */ |
176620f1 | 8419 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 8420 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
8421 | if (type != NULL) |
8422 | SYMBOL_TYPE (sym) = type; | |
8423 | else | |
e7c27a73 | 8424 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
8425 | attr = dwarf2_attr (die, |
8426 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
8427 | cu); | |
c906108c SS |
8428 | if (attr) |
8429 | { | |
8430 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
8431 | } | |
cb1df416 | 8432 | |
edb3359d DJ |
8433 | attr = dwarf2_attr (die, |
8434 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
8435 | cu); | |
cb1df416 DJ |
8436 | if (attr) |
8437 | { | |
8438 | int file_index = DW_UNSND (attr); | |
8439 | if (cu->line_header == NULL | |
8440 | || file_index > cu->line_header->num_file_names) | |
8441 | complaint (&symfile_complaints, | |
8442 | _("file index out of range")); | |
1c3d648d | 8443 | else if (file_index > 0) |
cb1df416 DJ |
8444 | { |
8445 | struct file_entry *fe; | |
8446 | fe = &cu->line_header->file_names[file_index - 1]; | |
8447 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
8448 | } | |
8449 | } | |
8450 | ||
c906108c SS |
8451 | switch (die->tag) |
8452 | { | |
8453 | case DW_TAG_label: | |
e142c38c | 8454 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
8455 | if (attr) |
8456 | { | |
8457 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
8458 | } | |
8459 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
8460 | break; | |
8461 | case DW_TAG_subprogram: | |
8462 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
8463 | finish_block. */ | |
8464 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 8465 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
8466 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
8467 | || cu->language == language_ada) | |
c906108c | 8468 | { |
2cfa0c8d JB |
8469 | /* Subprograms marked external are stored as a global symbol. |
8470 | Ada subprograms, whether marked external or not, are always | |
8471 | stored as a global symbol, because we want to be able to | |
8472 | access them globally. For instance, we want to be able | |
8473 | to break on a nested subprogram without having to | |
8474 | specify the context. */ | |
c906108c SS |
8475 | add_symbol_to_list (sym, &global_symbols); |
8476 | } | |
8477 | else | |
8478 | { | |
e142c38c | 8479 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
8480 | } |
8481 | break; | |
edb3359d DJ |
8482 | case DW_TAG_inlined_subroutine: |
8483 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
8484 | finish_block. */ | |
8485 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
8486 | SYMBOL_INLINED (sym) = 1; | |
8487 | /* Do not add the symbol to any lists. It will be found via | |
8488 | BLOCK_FUNCTION from the blockvector. */ | |
8489 | break; | |
c906108c SS |
8490 | case DW_TAG_variable: |
8491 | /* Compilation with minimal debug info may result in variables | |
8492 | with missing type entries. Change the misleading `void' type | |
8493 | to something sensible. */ | |
8494 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
64c50499 | 8495 | SYMBOL_TYPE (sym) |
46bf5051 | 8496 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 8497 | |
e142c38c | 8498 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
8499 | if (attr) |
8500 | { | |
e7c27a73 | 8501 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 8502 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
8503 | if (attr2 && (DW_UNSND (attr2) != 0)) |
8504 | add_symbol_to_list (sym, &global_symbols); | |
8505 | else | |
e142c38c | 8506 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
8507 | break; |
8508 | } | |
e142c38c | 8509 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
8510 | if (attr) |
8511 | { | |
e7c27a73 | 8512 | var_decode_location (attr, sym, cu); |
e142c38c | 8513 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 8514 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 8515 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 8516 | else |
e142c38c | 8517 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
8518 | } |
8519 | else | |
8520 | { | |
8521 | /* We do not know the address of this symbol. | |
c5aa993b JM |
8522 | If it is an external symbol and we have type information |
8523 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
8524 | The address of the variable will then be determined from | |
8525 | the minimal symbol table whenever the variable is | |
8526 | referenced. */ | |
e142c38c | 8527 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 8528 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 8529 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 8530 | { |
0fe7935b DJ |
8531 | struct pending **list_to_add; |
8532 | ||
8533 | /* A variable with DW_AT_external is never static, but it | |
8534 | may be block-scoped. */ | |
8535 | list_to_add = (cu->list_in_scope == &file_symbols | |
8536 | ? &global_symbols : cu->list_in_scope); | |
8537 | ||
c906108c | 8538 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
0fe7935b | 8539 | add_symbol_to_list (sym, list_to_add); |
c906108c | 8540 | } |
442ddf59 JK |
8541 | else if (!die_is_declaration (die, cu)) |
8542 | { | |
8543 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
8544 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
8545 | add_symbol_to_list (sym, cu->list_in_scope); | |
8546 | } | |
c906108c SS |
8547 | } |
8548 | break; | |
8549 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
8550 | /* If we are inside a function, mark this as an argument. If |
8551 | not, we might be looking at an argument to an inlined function | |
8552 | when we do not have enough information to show inlined frames; | |
8553 | pretend it's a local variable in that case so that the user can | |
8554 | still see it. */ | |
8555 | if (context_stack_depth > 0 | |
8556 | && context_stack[context_stack_depth - 1].name != NULL) | |
8557 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 8558 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
8559 | if (attr) |
8560 | { | |
e7c27a73 | 8561 | var_decode_location (attr, sym, cu); |
c906108c | 8562 | } |
e142c38c | 8563 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
8564 | if (attr) |
8565 | { | |
e7c27a73 | 8566 | dwarf2_const_value (attr, sym, cu); |
c906108c | 8567 | } |
e142c38c | 8568 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
8569 | break; |
8570 | case DW_TAG_unspecified_parameters: | |
8571 | /* From varargs functions; gdb doesn't seem to have any | |
8572 | interest in this information, so just ignore it for now. | |
8573 | (FIXME?) */ | |
8574 | break; | |
8575 | case DW_TAG_class_type: | |
680b30c7 | 8576 | case DW_TAG_interface_type: |
c906108c SS |
8577 | case DW_TAG_structure_type: |
8578 | case DW_TAG_union_type: | |
72019c9c | 8579 | case DW_TAG_set_type: |
c906108c SS |
8580 | case DW_TAG_enumeration_type: |
8581 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 8582 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 8583 | |
63d06c5c DC |
8584 | /* Make sure that the symbol includes appropriate enclosing |
8585 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 8586 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
8587 | the type. */ |
8588 | ||
987504bb JJ |
8589 | if (cu->language == language_cplus |
8590 | || cu->language == language_java) | |
c906108c | 8591 | { |
63d06c5c DC |
8592 | struct type *type = SYMBOL_TYPE (sym); |
8593 | ||
8594 | if (TYPE_TAG_NAME (type) != NULL) | |
8595 | { | |
8596 | /* FIXME: carlton/2003-11-10: Should this use | |
8597 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
8598 | arises further down in this function.) */ |
8599 | /* The type's name is already allocated along with | |
8600 | this objfile, so we don't need to duplicate it | |
8601 | for the symbol. */ | |
8602 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 8603 | } |
c906108c | 8604 | } |
63d06c5c DC |
8605 | |
8606 | { | |
987504bb | 8607 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
8608 | really ever be static objects: otherwise, if you try |
8609 | to, say, break of a class's method and you're in a file | |
8610 | which doesn't mention that class, it won't work unless | |
8611 | the check for all static symbols in lookup_symbol_aux | |
8612 | saves you. See the OtherFileClass tests in | |
8613 | gdb.c++/namespace.exp. */ | |
8614 | ||
8615 | struct pending **list_to_add; | |
8616 | ||
e142c38c | 8617 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
8618 | && (cu->language == language_cplus |
8619 | || cu->language == language_java) | |
e142c38c | 8620 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
8621 | |
8622 | add_symbol_to_list (sym, list_to_add); | |
8623 | ||
8624 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb | 8625 | defines a typedef for "foo". A Java class declaration also |
5eeb2539 | 8626 | defines a typedef for the class. */ |
987504bb | 8627 | if (cu->language == language_cplus |
8c6860bb JB |
8628 | || cu->language == language_java |
8629 | || cu->language == language_ada) | |
63d06c5c | 8630 | { |
d8151005 DJ |
8631 | /* The symbol's name is already allocated along with |
8632 | this objfile, so we don't need to duplicate it for | |
8633 | the type. */ | |
63d06c5c | 8634 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 8635 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
8636 | } |
8637 | } | |
c906108c SS |
8638 | break; |
8639 | case DW_TAG_typedef: | |
94af9270 KS |
8640 | SYMBOL_LINKAGE_NAME (sym) |
8641 | = (char *) dwarf2_full_name (name, die, cu); | |
63d06c5c DC |
8642 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
8643 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 8644 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 8645 | break; |
c906108c | 8646 | case DW_TAG_base_type: |
a02abb62 | 8647 | case DW_TAG_subrange_type: |
c906108c | 8648 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 8649 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 8650 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
8651 | break; |
8652 | case DW_TAG_enumerator: | |
94af9270 KS |
8653 | SYMBOL_LINKAGE_NAME (sym) |
8654 | = (char *) dwarf2_full_name (name, die, cu); | |
e142c38c | 8655 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
8656 | if (attr) |
8657 | { | |
e7c27a73 | 8658 | dwarf2_const_value (attr, sym, cu); |
c906108c | 8659 | } |
63d06c5c DC |
8660 | { |
8661 | /* NOTE: carlton/2003-11-10: See comment above in the | |
8662 | DW_TAG_class_type, etc. block. */ | |
8663 | ||
8664 | struct pending **list_to_add; | |
8665 | ||
e142c38c | 8666 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
8667 | && (cu->language == language_cplus |
8668 | || cu->language == language_java) | |
e142c38c | 8669 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
8670 | |
8671 | add_symbol_to_list (sym, list_to_add); | |
8672 | } | |
c906108c | 8673 | break; |
5c4e30ca DC |
8674 | case DW_TAG_namespace: |
8675 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
8676 | add_symbol_to_list (sym, &global_symbols); | |
8677 | break; | |
c906108c SS |
8678 | default: |
8679 | /* Not a tag we recognize. Hopefully we aren't processing | |
8680 | trash data, but since we must specifically ignore things | |
8681 | we don't recognize, there is nothing else we should do at | |
8682 | this point. */ | |
e2e0b3e5 | 8683 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 8684 | dwarf_tag_name (die->tag)); |
c906108c SS |
8685 | break; |
8686 | } | |
df8a16a1 DJ |
8687 | |
8688 | /* For the benefit of old versions of GCC, check for anonymous | |
8689 | namespaces based on the demangled name. */ | |
8690 | if (!processing_has_namespace_info | |
94af9270 | 8691 | && cu->language == language_cplus) |
df8a16a1 | 8692 | cp_scan_for_anonymous_namespaces (sym); |
c906108c SS |
8693 | } |
8694 | return (sym); | |
8695 | } | |
8696 | ||
8697 | /* Copy constant value from an attribute to a symbol. */ | |
8698 | ||
8699 | static void | |
107d2387 | 8700 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 8701 | struct dwarf2_cu *cu) |
c906108c | 8702 | { |
e7c27a73 DJ |
8703 | struct objfile *objfile = cu->objfile; |
8704 | struct comp_unit_head *cu_header = &cu->header; | |
e17a4113 UW |
8705 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
8706 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
c906108c SS |
8707 | struct dwarf_block *blk; |
8708 | ||
8709 | switch (attr->form) | |
8710 | { | |
8711 | case DW_FORM_addr: | |
107d2387 | 8712 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
3567439c | 8713 | dwarf2_const_value_length_mismatch_complaint (SYMBOL_PRINT_NAME (sym), |
4d3c2250 KB |
8714 | cu_header->addr_size, |
8715 | TYPE_LENGTH (SYMBOL_TYPE | |
8716 | (sym))); | |
4e38b386 | 8717 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 8718 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
8719 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
8720 | it's body - store_unsigned_integer. */ | |
8721 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
72f2769e | 8722 | byte_order, DW_ADDR (attr)); |
c906108c SS |
8723 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
8724 | break; | |
4ac36638 | 8725 | case DW_FORM_string: |
93b5768b PA |
8726 | case DW_FORM_strp: |
8727 | /* DW_STRING is already allocated on the obstack, point directly | |
8728 | to it. */ | |
8729 | SYMBOL_VALUE_BYTES (sym) = (gdb_byte *) DW_STRING (attr); | |
8730 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
8731 | break; | |
c906108c SS |
8732 | case DW_FORM_block1: |
8733 | case DW_FORM_block2: | |
8734 | case DW_FORM_block4: | |
8735 | case DW_FORM_block: | |
8736 | blk = DW_BLOCK (attr); | |
8737 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
3567439c | 8738 | dwarf2_const_value_length_mismatch_complaint (SYMBOL_PRINT_NAME (sym), |
4d3c2250 KB |
8739 | blk->size, |
8740 | TYPE_LENGTH (SYMBOL_TYPE | |
8741 | (sym))); | |
4e38b386 | 8742 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 8743 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
8744 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
8745 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
8746 | break; | |
2df3850c JM |
8747 | |
8748 | /* The DW_AT_const_value attributes are supposed to carry the | |
8749 | symbol's value "represented as it would be on the target | |
8750 | architecture." By the time we get here, it's already been | |
8751 | converted to host endianness, so we just need to sign- or | |
8752 | zero-extend it as appropriate. */ | |
8753 | case DW_FORM_data1: | |
8754 | dwarf2_const_value_data (attr, sym, 8); | |
8755 | break; | |
c906108c | 8756 | case DW_FORM_data2: |
2df3850c JM |
8757 | dwarf2_const_value_data (attr, sym, 16); |
8758 | break; | |
c906108c | 8759 | case DW_FORM_data4: |
2df3850c JM |
8760 | dwarf2_const_value_data (attr, sym, 32); |
8761 | break; | |
c906108c | 8762 | case DW_FORM_data8: |
2df3850c JM |
8763 | dwarf2_const_value_data (attr, sym, 64); |
8764 | break; | |
8765 | ||
c906108c | 8766 | case DW_FORM_sdata: |
2df3850c JM |
8767 | SYMBOL_VALUE (sym) = DW_SND (attr); |
8768 | SYMBOL_CLASS (sym) = LOC_CONST; | |
8769 | break; | |
8770 | ||
c906108c SS |
8771 | case DW_FORM_udata: |
8772 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
8773 | SYMBOL_CLASS (sym) = LOC_CONST; | |
8774 | break; | |
2df3850c | 8775 | |
c906108c | 8776 | default: |
4d3c2250 | 8777 | complaint (&symfile_complaints, |
e2e0b3e5 | 8778 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 8779 | dwarf_form_name (attr->form)); |
c906108c SS |
8780 | SYMBOL_VALUE (sym) = 0; |
8781 | SYMBOL_CLASS (sym) = LOC_CONST; | |
8782 | break; | |
8783 | } | |
8784 | } | |
8785 | ||
2df3850c JM |
8786 | |
8787 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
8788 | or zero-extend it as appropriate for the symbol's type. */ | |
8789 | static void | |
8790 | dwarf2_const_value_data (struct attribute *attr, | |
8791 | struct symbol *sym, | |
8792 | int bits) | |
8793 | { | |
8794 | LONGEST l = DW_UNSND (attr); | |
8795 | ||
8796 | if (bits < sizeof (l) * 8) | |
8797 | { | |
8798 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
8799 | l &= ((LONGEST) 1 << bits) - 1; | |
8800 | else | |
bf9198f1 | 8801 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
8802 | } |
8803 | ||
8804 | SYMBOL_VALUE (sym) = l; | |
8805 | SYMBOL_CLASS (sym) = LOC_CONST; | |
8806 | } | |
8807 | ||
8808 | ||
c906108c SS |
8809 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
8810 | ||
8811 | static struct type * | |
e7c27a73 | 8812 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
8813 | { |
8814 | struct type *type; | |
8815 | struct attribute *type_attr; | |
8816 | struct die_info *type_die; | |
c906108c | 8817 | |
e142c38c | 8818 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
8819 | if (!type_attr) |
8820 | { | |
8821 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 8822 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 8823 | } |
348e048f DE |
8824 | |
8825 | type_die = follow_die_ref_or_sig (die, type_attr, &cu); | |
10b3939b | 8826 | |
e7c27a73 | 8827 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
8828 | if (!type) |
8829 | { | |
d97bc12b | 8830 | dump_die_for_error (type_die); |
8a3fe4f8 | 8831 | error (_("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]"), |
e7c27a73 | 8832 | cu->objfile->name); |
c906108c SS |
8833 | } |
8834 | return type; | |
8835 | } | |
8836 | ||
b4ba55a1 JB |
8837 | /* True iff CU's producer generates GNAT Ada auxiliary information |
8838 | that allows to find parallel types through that information instead | |
8839 | of having to do expensive parallel lookups by type name. */ | |
8840 | ||
8841 | static int | |
8842 | need_gnat_info (struct dwarf2_cu *cu) | |
8843 | { | |
8844 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
8845 | of GNAT produces this auxiliary information, without any indication | |
8846 | that it is produced. Part of enhancing the FSF version of GNAT | |
8847 | to produce that information will be to put in place an indicator | |
8848 | that we can use in order to determine whether the descriptive type | |
8849 | info is available or not. One suggestion that has been made is | |
8850 | to use a new attribute, attached to the CU die. For now, assume | |
8851 | that the descriptive type info is not available. */ | |
8852 | return 0; | |
8853 | } | |
8854 | ||
8855 | ||
8856 | /* Return the auxiliary type of the die in question using its | |
8857 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
8858 | attribute is not present. */ | |
8859 | ||
8860 | static struct type * | |
8861 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
8862 | { | |
8863 | struct type *type; | |
8864 | struct attribute *type_attr; | |
8865 | struct die_info *type_die; | |
8866 | ||
8867 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
8868 | if (!type_attr) | |
8869 | return NULL; | |
8870 | ||
8871 | type_die = follow_die_ref (die, type_attr, &cu); | |
8872 | type = tag_type_to_type (type_die, cu); | |
8873 | if (!type) | |
8874 | { | |
8875 | dump_die_for_error (type_die); | |
8876 | error (_("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]"), | |
8877 | cu->objfile->name); | |
8878 | } | |
8879 | return type; | |
8880 | } | |
8881 | ||
8882 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
8883 | descriptive type accordingly. */ | |
8884 | ||
8885 | static void | |
8886 | set_descriptive_type (struct type *type, struct die_info *die, | |
8887 | struct dwarf2_cu *cu) | |
8888 | { | |
8889 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
8890 | ||
8891 | if (descriptive_type) | |
8892 | { | |
8893 | ALLOCATE_GNAT_AUX_TYPE (type); | |
8894 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
8895 | } | |
8896 | } | |
8897 | ||
c906108c SS |
8898 | /* Return the containing type of the die in question using its |
8899 | DW_AT_containing_type attribute. */ | |
8900 | ||
8901 | static struct type * | |
e7c27a73 | 8902 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
8903 | { |
8904 | struct type *type = NULL; | |
8905 | struct attribute *type_attr; | |
8906 | struct die_info *type_die = NULL; | |
c906108c | 8907 | |
e142c38c | 8908 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
8909 | if (type_attr) |
8910 | { | |
348e048f | 8911 | type_die = follow_die_ref_or_sig (die, type_attr, &cu); |
e7c27a73 | 8912 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
8913 | } |
8914 | if (!type) | |
8915 | { | |
8916 | if (type_die) | |
d97bc12b | 8917 | dump_die_for_error (type_die); |
8a3fe4f8 | 8918 | error (_("Dwarf Error: Problem turning containing type into gdb type [in module %s]"), |
e7c27a73 | 8919 | cu->objfile->name); |
c906108c SS |
8920 | } |
8921 | return type; | |
8922 | } | |
8923 | ||
c906108c | 8924 | static struct type * |
e7c27a73 | 8925 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8926 | { |
f792889a DJ |
8927 | struct type *this_type; |
8928 | ||
8929 | this_type = read_type_die (die, cu); | |
8930 | if (!this_type) | |
c906108c | 8931 | { |
d97bc12b | 8932 | dump_die_for_error (die); |
f792889a DJ |
8933 | error (_("Dwarf Error: Cannot find type of die [in module %s]"), |
8934 | cu->objfile->name); | |
c906108c | 8935 | } |
f792889a | 8936 | return this_type; |
c906108c SS |
8937 | } |
8938 | ||
f792889a | 8939 | static struct type * |
e7c27a73 | 8940 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8941 | { |
f792889a DJ |
8942 | struct type *this_type; |
8943 | ||
8944 | this_type = get_die_type (die, cu); | |
8945 | if (this_type) | |
8946 | return this_type; | |
8947 | ||
c906108c SS |
8948 | switch (die->tag) |
8949 | { | |
8950 | case DW_TAG_class_type: | |
680b30c7 | 8951 | case DW_TAG_interface_type: |
c906108c SS |
8952 | case DW_TAG_structure_type: |
8953 | case DW_TAG_union_type: | |
f792889a | 8954 | this_type = read_structure_type (die, cu); |
c906108c SS |
8955 | break; |
8956 | case DW_TAG_enumeration_type: | |
f792889a | 8957 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
8958 | break; |
8959 | case DW_TAG_subprogram: | |
8960 | case DW_TAG_subroutine_type: | |
edb3359d | 8961 | case DW_TAG_inlined_subroutine: |
f792889a | 8962 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
8963 | break; |
8964 | case DW_TAG_array_type: | |
f792889a | 8965 | this_type = read_array_type (die, cu); |
c906108c | 8966 | break; |
72019c9c | 8967 | case DW_TAG_set_type: |
f792889a | 8968 | this_type = read_set_type (die, cu); |
72019c9c | 8969 | break; |
c906108c | 8970 | case DW_TAG_pointer_type: |
f792889a | 8971 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
8972 | break; |
8973 | case DW_TAG_ptr_to_member_type: | |
f792889a | 8974 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
8975 | break; |
8976 | case DW_TAG_reference_type: | |
f792889a | 8977 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
8978 | break; |
8979 | case DW_TAG_const_type: | |
f792889a | 8980 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
8981 | break; |
8982 | case DW_TAG_volatile_type: | |
f792889a | 8983 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
8984 | break; |
8985 | case DW_TAG_string_type: | |
f792889a | 8986 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
8987 | break; |
8988 | case DW_TAG_typedef: | |
f792889a | 8989 | this_type = read_typedef (die, cu); |
c906108c | 8990 | break; |
a02abb62 | 8991 | case DW_TAG_subrange_type: |
f792889a | 8992 | this_type = read_subrange_type (die, cu); |
a02abb62 | 8993 | break; |
c906108c | 8994 | case DW_TAG_base_type: |
f792889a | 8995 | this_type = read_base_type (die, cu); |
c906108c | 8996 | break; |
81a17f79 | 8997 | case DW_TAG_unspecified_type: |
f792889a | 8998 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 8999 | break; |
0114d602 DJ |
9000 | case DW_TAG_namespace: |
9001 | this_type = read_namespace_type (die, cu); | |
9002 | break; | |
c906108c | 9003 | default: |
a1f5b845 | 9004 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 9005 | dwarf_tag_name (die->tag)); |
c906108c SS |
9006 | break; |
9007 | } | |
63d06c5c | 9008 | |
f792889a | 9009 | return this_type; |
63d06c5c DC |
9010 | } |
9011 | ||
fdde2d81 | 9012 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 9013 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 9014 | |
0114d602 DJ |
9015 | For example, if we're within the method foo() in the following |
9016 | code: | |
9017 | ||
9018 | namespace N { | |
9019 | class C { | |
9020 | void foo () { | |
9021 | } | |
9022 | }; | |
9023 | } | |
9024 | ||
9025 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
9026 | |
9027 | static char * | |
e142c38c | 9028 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 9029 | { |
0114d602 DJ |
9030 | struct die_info *parent, *spec_die; |
9031 | struct dwarf2_cu *spec_cu; | |
9032 | struct type *parent_type; | |
63d06c5c | 9033 | |
987504bb JJ |
9034 | if (cu->language != language_cplus |
9035 | && cu->language != language_java) | |
0114d602 DJ |
9036 | return ""; |
9037 | ||
9038 | /* We have to be careful in the presence of DW_AT_specification. | |
9039 | For example, with GCC 3.4, given the code | |
9040 | ||
9041 | namespace N { | |
9042 | void foo() { | |
9043 | // Definition of N::foo. | |
9044 | } | |
9045 | } | |
9046 | ||
9047 | then we'll have a tree of DIEs like this: | |
9048 | ||
9049 | 1: DW_TAG_compile_unit | |
9050 | 2: DW_TAG_namespace // N | |
9051 | 3: DW_TAG_subprogram // declaration of N::foo | |
9052 | 4: DW_TAG_subprogram // definition of N::foo | |
9053 | DW_AT_specification // refers to die #3 | |
9054 | ||
9055 | Thus, when processing die #4, we have to pretend that we're in | |
9056 | the context of its DW_AT_specification, namely the contex of die | |
9057 | #3. */ | |
9058 | spec_cu = cu; | |
9059 | spec_die = die_specification (die, &spec_cu); | |
9060 | if (spec_die == NULL) | |
9061 | parent = die->parent; | |
9062 | else | |
63d06c5c | 9063 | { |
0114d602 DJ |
9064 | parent = spec_die->parent; |
9065 | cu = spec_cu; | |
63d06c5c | 9066 | } |
0114d602 DJ |
9067 | |
9068 | if (parent == NULL) | |
9069 | return ""; | |
63d06c5c | 9070 | else |
0114d602 DJ |
9071 | switch (parent->tag) |
9072 | { | |
63d06c5c | 9073 | case DW_TAG_namespace: |
0114d602 DJ |
9074 | parent_type = read_type_die (parent, cu); |
9075 | /* We give a name to even anonymous namespaces. */ | |
9076 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 9077 | case DW_TAG_class_type: |
680b30c7 | 9078 | case DW_TAG_interface_type: |
63d06c5c | 9079 | case DW_TAG_structure_type: |
0114d602 DJ |
9080 | case DW_TAG_union_type: |
9081 | parent_type = read_type_die (parent, cu); | |
9082 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
9083 | return TYPE_TAG_NAME (parent_type); | |
9084 | else | |
9085 | /* An anonymous structure is only allowed non-static data | |
9086 | members; no typedefs, no member functions, et cetera. | |
9087 | So it does not need a prefix. */ | |
9088 | return ""; | |
63d06c5c | 9089 | default: |
8176b9b8 | 9090 | return determine_prefix (parent, cu); |
63d06c5c | 9091 | } |
63d06c5c DC |
9092 | } |
9093 | ||
987504bb JJ |
9094 | /* Return a newly-allocated string formed by concatenating PREFIX and |
9095 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
9096 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
9097 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
9098 | is used to determine the language and hence, the appropriate separator. */ | |
9099 | ||
9100 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
9101 | |
9102 | static char * | |
987504bb JJ |
9103 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
9104 | struct dwarf2_cu *cu) | |
63d06c5c | 9105 | { |
987504bb | 9106 | char *sep; |
63d06c5c | 9107 | |
987504bb JJ |
9108 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
9109 | sep = ""; | |
9110 | else if (cu->language == language_java) | |
9111 | sep = "."; | |
9112 | else | |
9113 | sep = "::"; | |
63d06c5c | 9114 | |
6dd47d34 DE |
9115 | if (prefix == NULL) |
9116 | prefix = ""; | |
9117 | if (suffix == NULL) | |
9118 | suffix = ""; | |
9119 | ||
987504bb JJ |
9120 | if (obs == NULL) |
9121 | { | |
9122 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
6dd47d34 DE |
9123 | strcpy (retval, prefix); |
9124 | strcat (retval, sep); | |
9125 | strcat (retval, suffix); | |
63d06c5c DC |
9126 | return retval; |
9127 | } | |
987504bb JJ |
9128 | else |
9129 | { | |
9130 | /* We have an obstack. */ | |
9131 | return obconcat (obs, prefix, sep, suffix); | |
9132 | } | |
63d06c5c DC |
9133 | } |
9134 | ||
c906108c SS |
9135 | /* Return sibling of die, NULL if no sibling. */ |
9136 | ||
f9aca02d | 9137 | static struct die_info * |
fba45db2 | 9138 | sibling_die (struct die_info *die) |
c906108c | 9139 | { |
639d11d3 | 9140 | return die->sibling; |
c906108c SS |
9141 | } |
9142 | ||
71c25dea TT |
9143 | /* Get name of a die, return NULL if not found. */ |
9144 | ||
9145 | static char * | |
9146 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
9147 | struct obstack *obstack) | |
9148 | { | |
9149 | if (name && cu->language == language_cplus) | |
9150 | { | |
9151 | char *canon_name = cp_canonicalize_string (name); | |
9152 | ||
9153 | if (canon_name != NULL) | |
9154 | { | |
9155 | if (strcmp (canon_name, name) != 0) | |
9156 | name = obsavestring (canon_name, strlen (canon_name), | |
9157 | obstack); | |
9158 | xfree (canon_name); | |
9159 | } | |
9160 | } | |
9161 | ||
9162 | return name; | |
c906108c SS |
9163 | } |
9164 | ||
9219021c DC |
9165 | /* Get name of a die, return NULL if not found. */ |
9166 | ||
9167 | static char * | |
e142c38c | 9168 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
9169 | { |
9170 | struct attribute *attr; | |
9171 | ||
e142c38c | 9172 | attr = dwarf2_attr (die, DW_AT_name, cu); |
71c25dea TT |
9173 | if (!attr || !DW_STRING (attr)) |
9174 | return NULL; | |
9175 | ||
9176 | switch (die->tag) | |
9177 | { | |
9178 | case DW_TAG_compile_unit: | |
9179 | /* Compilation units have a DW_AT_name that is a filename, not | |
9180 | a source language identifier. */ | |
9181 | case DW_TAG_enumeration_type: | |
9182 | case DW_TAG_enumerator: | |
9183 | /* These tags always have simple identifiers already; no need | |
9184 | to canonicalize them. */ | |
9185 | return DW_STRING (attr); | |
9186 | default: | |
8285870a | 9187 | if (!DW_STRING_IS_CANONICAL (attr)) |
71c25dea TT |
9188 | { |
9189 | DW_STRING (attr) | |
9190 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
9191 | &cu->objfile->objfile_obstack); | |
8285870a | 9192 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea TT |
9193 | } |
9194 | return DW_STRING (attr); | |
9195 | } | |
9219021c DC |
9196 | } |
9197 | ||
9198 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
9199 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
9200 | containing the return value on output. */ | |
9219021c DC |
9201 | |
9202 | static struct die_info * | |
f2f0e013 | 9203 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
9204 | { |
9205 | struct attribute *attr; | |
9219021c | 9206 | |
f2f0e013 | 9207 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
9208 | if (attr == NULL) |
9209 | return NULL; | |
9210 | ||
f2f0e013 | 9211 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
9212 | } |
9213 | ||
c906108c SS |
9214 | /* Convert a DIE tag into its string name. */ |
9215 | ||
9216 | static char * | |
aa1ee363 | 9217 | dwarf_tag_name (unsigned tag) |
c906108c SS |
9218 | { |
9219 | switch (tag) | |
9220 | { | |
9221 | case DW_TAG_padding: | |
9222 | return "DW_TAG_padding"; | |
9223 | case DW_TAG_array_type: | |
9224 | return "DW_TAG_array_type"; | |
9225 | case DW_TAG_class_type: | |
9226 | return "DW_TAG_class_type"; | |
9227 | case DW_TAG_entry_point: | |
9228 | return "DW_TAG_entry_point"; | |
9229 | case DW_TAG_enumeration_type: | |
9230 | return "DW_TAG_enumeration_type"; | |
9231 | case DW_TAG_formal_parameter: | |
9232 | return "DW_TAG_formal_parameter"; | |
9233 | case DW_TAG_imported_declaration: | |
9234 | return "DW_TAG_imported_declaration"; | |
9235 | case DW_TAG_label: | |
9236 | return "DW_TAG_label"; | |
9237 | case DW_TAG_lexical_block: | |
9238 | return "DW_TAG_lexical_block"; | |
9239 | case DW_TAG_member: | |
9240 | return "DW_TAG_member"; | |
9241 | case DW_TAG_pointer_type: | |
9242 | return "DW_TAG_pointer_type"; | |
9243 | case DW_TAG_reference_type: | |
9244 | return "DW_TAG_reference_type"; | |
9245 | case DW_TAG_compile_unit: | |
9246 | return "DW_TAG_compile_unit"; | |
9247 | case DW_TAG_string_type: | |
9248 | return "DW_TAG_string_type"; | |
9249 | case DW_TAG_structure_type: | |
9250 | return "DW_TAG_structure_type"; | |
9251 | case DW_TAG_subroutine_type: | |
9252 | return "DW_TAG_subroutine_type"; | |
9253 | case DW_TAG_typedef: | |
9254 | return "DW_TAG_typedef"; | |
9255 | case DW_TAG_union_type: | |
9256 | return "DW_TAG_union_type"; | |
9257 | case DW_TAG_unspecified_parameters: | |
9258 | return "DW_TAG_unspecified_parameters"; | |
9259 | case DW_TAG_variant: | |
9260 | return "DW_TAG_variant"; | |
9261 | case DW_TAG_common_block: | |
9262 | return "DW_TAG_common_block"; | |
9263 | case DW_TAG_common_inclusion: | |
9264 | return "DW_TAG_common_inclusion"; | |
9265 | case DW_TAG_inheritance: | |
9266 | return "DW_TAG_inheritance"; | |
9267 | case DW_TAG_inlined_subroutine: | |
9268 | return "DW_TAG_inlined_subroutine"; | |
9269 | case DW_TAG_module: | |
9270 | return "DW_TAG_module"; | |
9271 | case DW_TAG_ptr_to_member_type: | |
9272 | return "DW_TAG_ptr_to_member_type"; | |
9273 | case DW_TAG_set_type: | |
9274 | return "DW_TAG_set_type"; | |
9275 | case DW_TAG_subrange_type: | |
9276 | return "DW_TAG_subrange_type"; | |
9277 | case DW_TAG_with_stmt: | |
9278 | return "DW_TAG_with_stmt"; | |
9279 | case DW_TAG_access_declaration: | |
9280 | return "DW_TAG_access_declaration"; | |
9281 | case DW_TAG_base_type: | |
9282 | return "DW_TAG_base_type"; | |
9283 | case DW_TAG_catch_block: | |
9284 | return "DW_TAG_catch_block"; | |
9285 | case DW_TAG_const_type: | |
9286 | return "DW_TAG_const_type"; | |
9287 | case DW_TAG_constant: | |
9288 | return "DW_TAG_constant"; | |
9289 | case DW_TAG_enumerator: | |
9290 | return "DW_TAG_enumerator"; | |
9291 | case DW_TAG_file_type: | |
9292 | return "DW_TAG_file_type"; | |
9293 | case DW_TAG_friend: | |
9294 | return "DW_TAG_friend"; | |
9295 | case DW_TAG_namelist: | |
9296 | return "DW_TAG_namelist"; | |
9297 | case DW_TAG_namelist_item: | |
9298 | return "DW_TAG_namelist_item"; | |
9299 | case DW_TAG_packed_type: | |
9300 | return "DW_TAG_packed_type"; | |
9301 | case DW_TAG_subprogram: | |
9302 | return "DW_TAG_subprogram"; | |
9303 | case DW_TAG_template_type_param: | |
9304 | return "DW_TAG_template_type_param"; | |
9305 | case DW_TAG_template_value_param: | |
9306 | return "DW_TAG_template_value_param"; | |
9307 | case DW_TAG_thrown_type: | |
9308 | return "DW_TAG_thrown_type"; | |
9309 | case DW_TAG_try_block: | |
9310 | return "DW_TAG_try_block"; | |
9311 | case DW_TAG_variant_part: | |
9312 | return "DW_TAG_variant_part"; | |
9313 | case DW_TAG_variable: | |
9314 | return "DW_TAG_variable"; | |
9315 | case DW_TAG_volatile_type: | |
9316 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
9317 | case DW_TAG_dwarf_procedure: |
9318 | return "DW_TAG_dwarf_procedure"; | |
9319 | case DW_TAG_restrict_type: | |
9320 | return "DW_TAG_restrict_type"; | |
9321 | case DW_TAG_interface_type: | |
9322 | return "DW_TAG_interface_type"; | |
9323 | case DW_TAG_namespace: | |
9324 | return "DW_TAG_namespace"; | |
9325 | case DW_TAG_imported_module: | |
9326 | return "DW_TAG_imported_module"; | |
9327 | case DW_TAG_unspecified_type: | |
9328 | return "DW_TAG_unspecified_type"; | |
9329 | case DW_TAG_partial_unit: | |
9330 | return "DW_TAG_partial_unit"; | |
9331 | case DW_TAG_imported_unit: | |
9332 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
9333 | case DW_TAG_condition: |
9334 | return "DW_TAG_condition"; | |
9335 | case DW_TAG_shared_type: | |
9336 | return "DW_TAG_shared_type"; | |
348e048f DE |
9337 | case DW_TAG_type_unit: |
9338 | return "DW_TAG_type_unit"; | |
c906108c SS |
9339 | case DW_TAG_MIPS_loop: |
9340 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
9341 | case DW_TAG_HP_array_descriptor: |
9342 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
9343 | case DW_TAG_format_label: |
9344 | return "DW_TAG_format_label"; | |
9345 | case DW_TAG_function_template: | |
9346 | return "DW_TAG_function_template"; | |
9347 | case DW_TAG_class_template: | |
9348 | return "DW_TAG_class_template"; | |
b7619582 GF |
9349 | case DW_TAG_GNU_BINCL: |
9350 | return "DW_TAG_GNU_BINCL"; | |
9351 | case DW_TAG_GNU_EINCL: | |
9352 | return "DW_TAG_GNU_EINCL"; | |
9353 | case DW_TAG_upc_shared_type: | |
9354 | return "DW_TAG_upc_shared_type"; | |
9355 | case DW_TAG_upc_strict_type: | |
9356 | return "DW_TAG_upc_strict_type"; | |
9357 | case DW_TAG_upc_relaxed_type: | |
9358 | return "DW_TAG_upc_relaxed_type"; | |
9359 | case DW_TAG_PGI_kanji_type: | |
9360 | return "DW_TAG_PGI_kanji_type"; | |
9361 | case DW_TAG_PGI_interface_block: | |
9362 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
9363 | default: |
9364 | return "DW_TAG_<unknown>"; | |
9365 | } | |
9366 | } | |
9367 | ||
9368 | /* Convert a DWARF attribute code into its string name. */ | |
9369 | ||
9370 | static char * | |
aa1ee363 | 9371 | dwarf_attr_name (unsigned attr) |
c906108c SS |
9372 | { |
9373 | switch (attr) | |
9374 | { | |
9375 | case DW_AT_sibling: | |
9376 | return "DW_AT_sibling"; | |
9377 | case DW_AT_location: | |
9378 | return "DW_AT_location"; | |
9379 | case DW_AT_name: | |
9380 | return "DW_AT_name"; | |
9381 | case DW_AT_ordering: | |
9382 | return "DW_AT_ordering"; | |
9383 | case DW_AT_subscr_data: | |
9384 | return "DW_AT_subscr_data"; | |
9385 | case DW_AT_byte_size: | |
9386 | return "DW_AT_byte_size"; | |
9387 | case DW_AT_bit_offset: | |
9388 | return "DW_AT_bit_offset"; | |
9389 | case DW_AT_bit_size: | |
9390 | return "DW_AT_bit_size"; | |
9391 | case DW_AT_element_list: | |
9392 | return "DW_AT_element_list"; | |
9393 | case DW_AT_stmt_list: | |
9394 | return "DW_AT_stmt_list"; | |
9395 | case DW_AT_low_pc: | |
9396 | return "DW_AT_low_pc"; | |
9397 | case DW_AT_high_pc: | |
9398 | return "DW_AT_high_pc"; | |
9399 | case DW_AT_language: | |
9400 | return "DW_AT_language"; | |
9401 | case DW_AT_member: | |
9402 | return "DW_AT_member"; | |
9403 | case DW_AT_discr: | |
9404 | return "DW_AT_discr"; | |
9405 | case DW_AT_discr_value: | |
9406 | return "DW_AT_discr_value"; | |
9407 | case DW_AT_visibility: | |
9408 | return "DW_AT_visibility"; | |
9409 | case DW_AT_import: | |
9410 | return "DW_AT_import"; | |
9411 | case DW_AT_string_length: | |
9412 | return "DW_AT_string_length"; | |
9413 | case DW_AT_common_reference: | |
9414 | return "DW_AT_common_reference"; | |
9415 | case DW_AT_comp_dir: | |
9416 | return "DW_AT_comp_dir"; | |
9417 | case DW_AT_const_value: | |
9418 | return "DW_AT_const_value"; | |
9419 | case DW_AT_containing_type: | |
9420 | return "DW_AT_containing_type"; | |
9421 | case DW_AT_default_value: | |
9422 | return "DW_AT_default_value"; | |
9423 | case DW_AT_inline: | |
9424 | return "DW_AT_inline"; | |
9425 | case DW_AT_is_optional: | |
9426 | return "DW_AT_is_optional"; | |
9427 | case DW_AT_lower_bound: | |
9428 | return "DW_AT_lower_bound"; | |
9429 | case DW_AT_producer: | |
9430 | return "DW_AT_producer"; | |
9431 | case DW_AT_prototyped: | |
9432 | return "DW_AT_prototyped"; | |
9433 | case DW_AT_return_addr: | |
9434 | return "DW_AT_return_addr"; | |
9435 | case DW_AT_start_scope: | |
9436 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
9437 | case DW_AT_bit_stride: |
9438 | return "DW_AT_bit_stride"; | |
c906108c SS |
9439 | case DW_AT_upper_bound: |
9440 | return "DW_AT_upper_bound"; | |
9441 | case DW_AT_abstract_origin: | |
9442 | return "DW_AT_abstract_origin"; | |
9443 | case DW_AT_accessibility: | |
9444 | return "DW_AT_accessibility"; | |
9445 | case DW_AT_address_class: | |
9446 | return "DW_AT_address_class"; | |
9447 | case DW_AT_artificial: | |
9448 | return "DW_AT_artificial"; | |
9449 | case DW_AT_base_types: | |
9450 | return "DW_AT_base_types"; | |
9451 | case DW_AT_calling_convention: | |
9452 | return "DW_AT_calling_convention"; | |
9453 | case DW_AT_count: | |
9454 | return "DW_AT_count"; | |
9455 | case DW_AT_data_member_location: | |
9456 | return "DW_AT_data_member_location"; | |
9457 | case DW_AT_decl_column: | |
9458 | return "DW_AT_decl_column"; | |
9459 | case DW_AT_decl_file: | |
9460 | return "DW_AT_decl_file"; | |
9461 | case DW_AT_decl_line: | |
9462 | return "DW_AT_decl_line"; | |
9463 | case DW_AT_declaration: | |
9464 | return "DW_AT_declaration"; | |
9465 | case DW_AT_discr_list: | |
9466 | return "DW_AT_discr_list"; | |
9467 | case DW_AT_encoding: | |
9468 | return "DW_AT_encoding"; | |
9469 | case DW_AT_external: | |
9470 | return "DW_AT_external"; | |
9471 | case DW_AT_frame_base: | |
9472 | return "DW_AT_frame_base"; | |
9473 | case DW_AT_friend: | |
9474 | return "DW_AT_friend"; | |
9475 | case DW_AT_identifier_case: | |
9476 | return "DW_AT_identifier_case"; | |
9477 | case DW_AT_macro_info: | |
9478 | return "DW_AT_macro_info"; | |
9479 | case DW_AT_namelist_items: | |
9480 | return "DW_AT_namelist_items"; | |
9481 | case DW_AT_priority: | |
9482 | return "DW_AT_priority"; | |
9483 | case DW_AT_segment: | |
9484 | return "DW_AT_segment"; | |
9485 | case DW_AT_specification: | |
9486 | return "DW_AT_specification"; | |
9487 | case DW_AT_static_link: | |
9488 | return "DW_AT_static_link"; | |
9489 | case DW_AT_type: | |
9490 | return "DW_AT_type"; | |
9491 | case DW_AT_use_location: | |
9492 | return "DW_AT_use_location"; | |
9493 | case DW_AT_variable_parameter: | |
9494 | return "DW_AT_variable_parameter"; | |
9495 | case DW_AT_virtuality: | |
9496 | return "DW_AT_virtuality"; | |
9497 | case DW_AT_vtable_elem_location: | |
9498 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 9499 | /* DWARF 3 values. */ |
d9fa45fe DC |
9500 | case DW_AT_allocated: |
9501 | return "DW_AT_allocated"; | |
9502 | case DW_AT_associated: | |
9503 | return "DW_AT_associated"; | |
9504 | case DW_AT_data_location: | |
9505 | return "DW_AT_data_location"; | |
09fa0d7c JK |
9506 | case DW_AT_byte_stride: |
9507 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
9508 | case DW_AT_entry_pc: |
9509 | return "DW_AT_entry_pc"; | |
9510 | case DW_AT_use_UTF8: | |
9511 | return "DW_AT_use_UTF8"; | |
9512 | case DW_AT_extension: | |
9513 | return "DW_AT_extension"; | |
9514 | case DW_AT_ranges: | |
9515 | return "DW_AT_ranges"; | |
9516 | case DW_AT_trampoline: | |
9517 | return "DW_AT_trampoline"; | |
9518 | case DW_AT_call_column: | |
9519 | return "DW_AT_call_column"; | |
9520 | case DW_AT_call_file: | |
9521 | return "DW_AT_call_file"; | |
9522 | case DW_AT_call_line: | |
9523 | return "DW_AT_call_line"; | |
b7619582 GF |
9524 | case DW_AT_description: |
9525 | return "DW_AT_description"; | |
9526 | case DW_AT_binary_scale: | |
9527 | return "DW_AT_binary_scale"; | |
9528 | case DW_AT_decimal_scale: | |
9529 | return "DW_AT_decimal_scale"; | |
9530 | case DW_AT_small: | |
9531 | return "DW_AT_small"; | |
9532 | case DW_AT_decimal_sign: | |
9533 | return "DW_AT_decimal_sign"; | |
9534 | case DW_AT_digit_count: | |
9535 | return "DW_AT_digit_count"; | |
9536 | case DW_AT_picture_string: | |
9537 | return "DW_AT_picture_string"; | |
9538 | case DW_AT_mutable: | |
9539 | return "DW_AT_mutable"; | |
9540 | case DW_AT_threads_scaled: | |
9541 | return "DW_AT_threads_scaled"; | |
9542 | case DW_AT_explicit: | |
9543 | return "DW_AT_explicit"; | |
9544 | case DW_AT_object_pointer: | |
9545 | return "DW_AT_object_pointer"; | |
9546 | case DW_AT_endianity: | |
9547 | return "DW_AT_endianity"; | |
9548 | case DW_AT_elemental: | |
9549 | return "DW_AT_elemental"; | |
9550 | case DW_AT_pure: | |
9551 | return "DW_AT_pure"; | |
9552 | case DW_AT_recursive: | |
9553 | return "DW_AT_recursive"; | |
348e048f DE |
9554 | /* DWARF 4 values. */ |
9555 | case DW_AT_signature: | |
9556 | return "DW_AT_signature"; | |
b7619582 | 9557 | /* SGI/MIPS extensions. */ |
c764a876 | 9558 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
c906108c SS |
9559 | case DW_AT_MIPS_fde: |
9560 | return "DW_AT_MIPS_fde"; | |
c764a876 | 9561 | #endif |
c906108c SS |
9562 | case DW_AT_MIPS_loop_begin: |
9563 | return "DW_AT_MIPS_loop_begin"; | |
9564 | case DW_AT_MIPS_tail_loop_begin: | |
9565 | return "DW_AT_MIPS_tail_loop_begin"; | |
9566 | case DW_AT_MIPS_epilog_begin: | |
9567 | return "DW_AT_MIPS_epilog_begin"; | |
9568 | case DW_AT_MIPS_loop_unroll_factor: | |
9569 | return "DW_AT_MIPS_loop_unroll_factor"; | |
9570 | case DW_AT_MIPS_software_pipeline_depth: | |
9571 | return "DW_AT_MIPS_software_pipeline_depth"; | |
9572 | case DW_AT_MIPS_linkage_name: | |
9573 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
9574 | case DW_AT_MIPS_stride: |
9575 | return "DW_AT_MIPS_stride"; | |
9576 | case DW_AT_MIPS_abstract_name: | |
9577 | return "DW_AT_MIPS_abstract_name"; | |
9578 | case DW_AT_MIPS_clone_origin: | |
9579 | return "DW_AT_MIPS_clone_origin"; | |
9580 | case DW_AT_MIPS_has_inlines: | |
9581 | return "DW_AT_MIPS_has_inlines"; | |
b7619582 | 9582 | /* HP extensions. */ |
c764a876 | 9583 | #ifndef MIPS /* collides with DW_AT_MIPS_fde */ |
b7619582 GF |
9584 | case DW_AT_HP_block_index: |
9585 | return "DW_AT_HP_block_index"; | |
c764a876 | 9586 | #endif |
b7619582 GF |
9587 | case DW_AT_HP_unmodifiable: |
9588 | return "DW_AT_HP_unmodifiable"; | |
9589 | case DW_AT_HP_actuals_stmt_list: | |
9590 | return "DW_AT_HP_actuals_stmt_list"; | |
9591 | case DW_AT_HP_proc_per_section: | |
9592 | return "DW_AT_HP_proc_per_section"; | |
9593 | case DW_AT_HP_raw_data_ptr: | |
9594 | return "DW_AT_HP_raw_data_ptr"; | |
9595 | case DW_AT_HP_pass_by_reference: | |
9596 | return "DW_AT_HP_pass_by_reference"; | |
9597 | case DW_AT_HP_opt_level: | |
9598 | return "DW_AT_HP_opt_level"; | |
9599 | case DW_AT_HP_prof_version_id: | |
9600 | return "DW_AT_HP_prof_version_id"; | |
9601 | case DW_AT_HP_opt_flags: | |
9602 | return "DW_AT_HP_opt_flags"; | |
9603 | case DW_AT_HP_cold_region_low_pc: | |
9604 | return "DW_AT_HP_cold_region_low_pc"; | |
9605 | case DW_AT_HP_cold_region_high_pc: | |
9606 | return "DW_AT_HP_cold_region_high_pc"; | |
9607 | case DW_AT_HP_all_variables_modifiable: | |
9608 | return "DW_AT_HP_all_variables_modifiable"; | |
9609 | case DW_AT_HP_linkage_name: | |
9610 | return "DW_AT_HP_linkage_name"; | |
9611 | case DW_AT_HP_prof_flags: | |
9612 | return "DW_AT_HP_prof_flags"; | |
9613 | /* GNU extensions. */ | |
c906108c SS |
9614 | case DW_AT_sf_names: |
9615 | return "DW_AT_sf_names"; | |
9616 | case DW_AT_src_info: | |
9617 | return "DW_AT_src_info"; | |
9618 | case DW_AT_mac_info: | |
9619 | return "DW_AT_mac_info"; | |
9620 | case DW_AT_src_coords: | |
9621 | return "DW_AT_src_coords"; | |
9622 | case DW_AT_body_begin: | |
9623 | return "DW_AT_body_begin"; | |
9624 | case DW_AT_body_end: | |
9625 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
9626 | case DW_AT_GNU_vector: |
9627 | return "DW_AT_GNU_vector"; | |
b7619582 GF |
9628 | /* VMS extensions. */ |
9629 | case DW_AT_VMS_rtnbeg_pd_address: | |
9630 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
9631 | /* UPC extension. */ | |
9632 | case DW_AT_upc_threads_scaled: | |
9633 | return "DW_AT_upc_threads_scaled"; | |
9634 | /* PGI (STMicroelectronics) extensions. */ | |
9635 | case DW_AT_PGI_lbase: | |
9636 | return "DW_AT_PGI_lbase"; | |
9637 | case DW_AT_PGI_soffset: | |
9638 | return "DW_AT_PGI_soffset"; | |
9639 | case DW_AT_PGI_lstride: | |
9640 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
9641 | default: |
9642 | return "DW_AT_<unknown>"; | |
9643 | } | |
9644 | } | |
9645 | ||
9646 | /* Convert a DWARF value form code into its string name. */ | |
9647 | ||
9648 | static char * | |
aa1ee363 | 9649 | dwarf_form_name (unsigned form) |
c906108c SS |
9650 | { |
9651 | switch (form) | |
9652 | { | |
9653 | case DW_FORM_addr: | |
9654 | return "DW_FORM_addr"; | |
9655 | case DW_FORM_block2: | |
9656 | return "DW_FORM_block2"; | |
9657 | case DW_FORM_block4: | |
9658 | return "DW_FORM_block4"; | |
9659 | case DW_FORM_data2: | |
9660 | return "DW_FORM_data2"; | |
9661 | case DW_FORM_data4: | |
9662 | return "DW_FORM_data4"; | |
9663 | case DW_FORM_data8: | |
9664 | return "DW_FORM_data8"; | |
9665 | case DW_FORM_string: | |
9666 | return "DW_FORM_string"; | |
9667 | case DW_FORM_block: | |
9668 | return "DW_FORM_block"; | |
9669 | case DW_FORM_block1: | |
9670 | return "DW_FORM_block1"; | |
9671 | case DW_FORM_data1: | |
9672 | return "DW_FORM_data1"; | |
9673 | case DW_FORM_flag: | |
9674 | return "DW_FORM_flag"; | |
9675 | case DW_FORM_sdata: | |
9676 | return "DW_FORM_sdata"; | |
9677 | case DW_FORM_strp: | |
9678 | return "DW_FORM_strp"; | |
9679 | case DW_FORM_udata: | |
9680 | return "DW_FORM_udata"; | |
9681 | case DW_FORM_ref_addr: | |
9682 | return "DW_FORM_ref_addr"; | |
9683 | case DW_FORM_ref1: | |
9684 | return "DW_FORM_ref1"; | |
9685 | case DW_FORM_ref2: | |
9686 | return "DW_FORM_ref2"; | |
9687 | case DW_FORM_ref4: | |
9688 | return "DW_FORM_ref4"; | |
9689 | case DW_FORM_ref8: | |
9690 | return "DW_FORM_ref8"; | |
9691 | case DW_FORM_ref_udata: | |
9692 | return "DW_FORM_ref_udata"; | |
9693 | case DW_FORM_indirect: | |
9694 | return "DW_FORM_indirect"; | |
348e048f DE |
9695 | case DW_FORM_sec_offset: |
9696 | return "DW_FORM_sec_offset"; | |
9697 | case DW_FORM_exprloc: | |
9698 | return "DW_FORM_exprloc"; | |
9699 | case DW_FORM_flag_present: | |
9700 | return "DW_FORM_flag_present"; | |
9701 | case DW_FORM_sig8: | |
9702 | return "DW_FORM_sig8"; | |
c906108c SS |
9703 | default: |
9704 | return "DW_FORM_<unknown>"; | |
9705 | } | |
9706 | } | |
9707 | ||
9708 | /* Convert a DWARF stack opcode into its string name. */ | |
9709 | ||
9710 | static char * | |
aa1ee363 | 9711 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
9712 | { |
9713 | switch (op) | |
9714 | { | |
9715 | case DW_OP_addr: | |
9716 | return "DW_OP_addr"; | |
9717 | case DW_OP_deref: | |
9718 | return "DW_OP_deref"; | |
9719 | case DW_OP_const1u: | |
9720 | return "DW_OP_const1u"; | |
9721 | case DW_OP_const1s: | |
9722 | return "DW_OP_const1s"; | |
9723 | case DW_OP_const2u: | |
9724 | return "DW_OP_const2u"; | |
9725 | case DW_OP_const2s: | |
9726 | return "DW_OP_const2s"; | |
9727 | case DW_OP_const4u: | |
9728 | return "DW_OP_const4u"; | |
9729 | case DW_OP_const4s: | |
9730 | return "DW_OP_const4s"; | |
9731 | case DW_OP_const8u: | |
9732 | return "DW_OP_const8u"; | |
9733 | case DW_OP_const8s: | |
9734 | return "DW_OP_const8s"; | |
9735 | case DW_OP_constu: | |
9736 | return "DW_OP_constu"; | |
9737 | case DW_OP_consts: | |
9738 | return "DW_OP_consts"; | |
9739 | case DW_OP_dup: | |
9740 | return "DW_OP_dup"; | |
9741 | case DW_OP_drop: | |
9742 | return "DW_OP_drop"; | |
9743 | case DW_OP_over: | |
9744 | return "DW_OP_over"; | |
9745 | case DW_OP_pick: | |
9746 | return "DW_OP_pick"; | |
9747 | case DW_OP_swap: | |
9748 | return "DW_OP_swap"; | |
9749 | case DW_OP_rot: | |
9750 | return "DW_OP_rot"; | |
9751 | case DW_OP_xderef: | |
9752 | return "DW_OP_xderef"; | |
9753 | case DW_OP_abs: | |
9754 | return "DW_OP_abs"; | |
9755 | case DW_OP_and: | |
9756 | return "DW_OP_and"; | |
9757 | case DW_OP_div: | |
9758 | return "DW_OP_div"; | |
9759 | case DW_OP_minus: | |
9760 | return "DW_OP_minus"; | |
9761 | case DW_OP_mod: | |
9762 | return "DW_OP_mod"; | |
9763 | case DW_OP_mul: | |
9764 | return "DW_OP_mul"; | |
9765 | case DW_OP_neg: | |
9766 | return "DW_OP_neg"; | |
9767 | case DW_OP_not: | |
9768 | return "DW_OP_not"; | |
9769 | case DW_OP_or: | |
9770 | return "DW_OP_or"; | |
9771 | case DW_OP_plus: | |
9772 | return "DW_OP_plus"; | |
9773 | case DW_OP_plus_uconst: | |
9774 | return "DW_OP_plus_uconst"; | |
9775 | case DW_OP_shl: | |
9776 | return "DW_OP_shl"; | |
9777 | case DW_OP_shr: | |
9778 | return "DW_OP_shr"; | |
9779 | case DW_OP_shra: | |
9780 | return "DW_OP_shra"; | |
9781 | case DW_OP_xor: | |
9782 | return "DW_OP_xor"; | |
9783 | case DW_OP_bra: | |
9784 | return "DW_OP_bra"; | |
9785 | case DW_OP_eq: | |
9786 | return "DW_OP_eq"; | |
9787 | case DW_OP_ge: | |
9788 | return "DW_OP_ge"; | |
9789 | case DW_OP_gt: | |
9790 | return "DW_OP_gt"; | |
9791 | case DW_OP_le: | |
9792 | return "DW_OP_le"; | |
9793 | case DW_OP_lt: | |
9794 | return "DW_OP_lt"; | |
9795 | case DW_OP_ne: | |
9796 | return "DW_OP_ne"; | |
9797 | case DW_OP_skip: | |
9798 | return "DW_OP_skip"; | |
9799 | case DW_OP_lit0: | |
9800 | return "DW_OP_lit0"; | |
9801 | case DW_OP_lit1: | |
9802 | return "DW_OP_lit1"; | |
9803 | case DW_OP_lit2: | |
9804 | return "DW_OP_lit2"; | |
9805 | case DW_OP_lit3: | |
9806 | return "DW_OP_lit3"; | |
9807 | case DW_OP_lit4: | |
9808 | return "DW_OP_lit4"; | |
9809 | case DW_OP_lit5: | |
9810 | return "DW_OP_lit5"; | |
9811 | case DW_OP_lit6: | |
9812 | return "DW_OP_lit6"; | |
9813 | case DW_OP_lit7: | |
9814 | return "DW_OP_lit7"; | |
9815 | case DW_OP_lit8: | |
9816 | return "DW_OP_lit8"; | |
9817 | case DW_OP_lit9: | |
9818 | return "DW_OP_lit9"; | |
9819 | case DW_OP_lit10: | |
9820 | return "DW_OP_lit10"; | |
9821 | case DW_OP_lit11: | |
9822 | return "DW_OP_lit11"; | |
9823 | case DW_OP_lit12: | |
9824 | return "DW_OP_lit12"; | |
9825 | case DW_OP_lit13: | |
9826 | return "DW_OP_lit13"; | |
9827 | case DW_OP_lit14: | |
9828 | return "DW_OP_lit14"; | |
9829 | case DW_OP_lit15: | |
9830 | return "DW_OP_lit15"; | |
9831 | case DW_OP_lit16: | |
9832 | return "DW_OP_lit16"; | |
9833 | case DW_OP_lit17: | |
9834 | return "DW_OP_lit17"; | |
9835 | case DW_OP_lit18: | |
9836 | return "DW_OP_lit18"; | |
9837 | case DW_OP_lit19: | |
9838 | return "DW_OP_lit19"; | |
9839 | case DW_OP_lit20: | |
9840 | return "DW_OP_lit20"; | |
9841 | case DW_OP_lit21: | |
9842 | return "DW_OP_lit21"; | |
9843 | case DW_OP_lit22: | |
9844 | return "DW_OP_lit22"; | |
9845 | case DW_OP_lit23: | |
9846 | return "DW_OP_lit23"; | |
9847 | case DW_OP_lit24: | |
9848 | return "DW_OP_lit24"; | |
9849 | case DW_OP_lit25: | |
9850 | return "DW_OP_lit25"; | |
9851 | case DW_OP_lit26: | |
9852 | return "DW_OP_lit26"; | |
9853 | case DW_OP_lit27: | |
9854 | return "DW_OP_lit27"; | |
9855 | case DW_OP_lit28: | |
9856 | return "DW_OP_lit28"; | |
9857 | case DW_OP_lit29: | |
9858 | return "DW_OP_lit29"; | |
9859 | case DW_OP_lit30: | |
9860 | return "DW_OP_lit30"; | |
9861 | case DW_OP_lit31: | |
9862 | return "DW_OP_lit31"; | |
9863 | case DW_OP_reg0: | |
9864 | return "DW_OP_reg0"; | |
9865 | case DW_OP_reg1: | |
9866 | return "DW_OP_reg1"; | |
9867 | case DW_OP_reg2: | |
9868 | return "DW_OP_reg2"; | |
9869 | case DW_OP_reg3: | |
9870 | return "DW_OP_reg3"; | |
9871 | case DW_OP_reg4: | |
9872 | return "DW_OP_reg4"; | |
9873 | case DW_OP_reg5: | |
9874 | return "DW_OP_reg5"; | |
9875 | case DW_OP_reg6: | |
9876 | return "DW_OP_reg6"; | |
9877 | case DW_OP_reg7: | |
9878 | return "DW_OP_reg7"; | |
9879 | case DW_OP_reg8: | |
9880 | return "DW_OP_reg8"; | |
9881 | case DW_OP_reg9: | |
9882 | return "DW_OP_reg9"; | |
9883 | case DW_OP_reg10: | |
9884 | return "DW_OP_reg10"; | |
9885 | case DW_OP_reg11: | |
9886 | return "DW_OP_reg11"; | |
9887 | case DW_OP_reg12: | |
9888 | return "DW_OP_reg12"; | |
9889 | case DW_OP_reg13: | |
9890 | return "DW_OP_reg13"; | |
9891 | case DW_OP_reg14: | |
9892 | return "DW_OP_reg14"; | |
9893 | case DW_OP_reg15: | |
9894 | return "DW_OP_reg15"; | |
9895 | case DW_OP_reg16: | |
9896 | return "DW_OP_reg16"; | |
9897 | case DW_OP_reg17: | |
9898 | return "DW_OP_reg17"; | |
9899 | case DW_OP_reg18: | |
9900 | return "DW_OP_reg18"; | |
9901 | case DW_OP_reg19: | |
9902 | return "DW_OP_reg19"; | |
9903 | case DW_OP_reg20: | |
9904 | return "DW_OP_reg20"; | |
9905 | case DW_OP_reg21: | |
9906 | return "DW_OP_reg21"; | |
9907 | case DW_OP_reg22: | |
9908 | return "DW_OP_reg22"; | |
9909 | case DW_OP_reg23: | |
9910 | return "DW_OP_reg23"; | |
9911 | case DW_OP_reg24: | |
9912 | return "DW_OP_reg24"; | |
9913 | case DW_OP_reg25: | |
9914 | return "DW_OP_reg25"; | |
9915 | case DW_OP_reg26: | |
9916 | return "DW_OP_reg26"; | |
9917 | case DW_OP_reg27: | |
9918 | return "DW_OP_reg27"; | |
9919 | case DW_OP_reg28: | |
9920 | return "DW_OP_reg28"; | |
9921 | case DW_OP_reg29: | |
9922 | return "DW_OP_reg29"; | |
9923 | case DW_OP_reg30: | |
9924 | return "DW_OP_reg30"; | |
9925 | case DW_OP_reg31: | |
9926 | return "DW_OP_reg31"; | |
9927 | case DW_OP_breg0: | |
9928 | return "DW_OP_breg0"; | |
9929 | case DW_OP_breg1: | |
9930 | return "DW_OP_breg1"; | |
9931 | case DW_OP_breg2: | |
9932 | return "DW_OP_breg2"; | |
9933 | case DW_OP_breg3: | |
9934 | return "DW_OP_breg3"; | |
9935 | case DW_OP_breg4: | |
9936 | return "DW_OP_breg4"; | |
9937 | case DW_OP_breg5: | |
9938 | return "DW_OP_breg5"; | |
9939 | case DW_OP_breg6: | |
9940 | return "DW_OP_breg6"; | |
9941 | case DW_OP_breg7: | |
9942 | return "DW_OP_breg7"; | |
9943 | case DW_OP_breg8: | |
9944 | return "DW_OP_breg8"; | |
9945 | case DW_OP_breg9: | |
9946 | return "DW_OP_breg9"; | |
9947 | case DW_OP_breg10: | |
9948 | return "DW_OP_breg10"; | |
9949 | case DW_OP_breg11: | |
9950 | return "DW_OP_breg11"; | |
9951 | case DW_OP_breg12: | |
9952 | return "DW_OP_breg12"; | |
9953 | case DW_OP_breg13: | |
9954 | return "DW_OP_breg13"; | |
9955 | case DW_OP_breg14: | |
9956 | return "DW_OP_breg14"; | |
9957 | case DW_OP_breg15: | |
9958 | return "DW_OP_breg15"; | |
9959 | case DW_OP_breg16: | |
9960 | return "DW_OP_breg16"; | |
9961 | case DW_OP_breg17: | |
9962 | return "DW_OP_breg17"; | |
9963 | case DW_OP_breg18: | |
9964 | return "DW_OP_breg18"; | |
9965 | case DW_OP_breg19: | |
9966 | return "DW_OP_breg19"; | |
9967 | case DW_OP_breg20: | |
9968 | return "DW_OP_breg20"; | |
9969 | case DW_OP_breg21: | |
9970 | return "DW_OP_breg21"; | |
9971 | case DW_OP_breg22: | |
9972 | return "DW_OP_breg22"; | |
9973 | case DW_OP_breg23: | |
9974 | return "DW_OP_breg23"; | |
9975 | case DW_OP_breg24: | |
9976 | return "DW_OP_breg24"; | |
9977 | case DW_OP_breg25: | |
9978 | return "DW_OP_breg25"; | |
9979 | case DW_OP_breg26: | |
9980 | return "DW_OP_breg26"; | |
9981 | case DW_OP_breg27: | |
9982 | return "DW_OP_breg27"; | |
9983 | case DW_OP_breg28: | |
9984 | return "DW_OP_breg28"; | |
9985 | case DW_OP_breg29: | |
9986 | return "DW_OP_breg29"; | |
9987 | case DW_OP_breg30: | |
9988 | return "DW_OP_breg30"; | |
9989 | case DW_OP_breg31: | |
9990 | return "DW_OP_breg31"; | |
9991 | case DW_OP_regx: | |
9992 | return "DW_OP_regx"; | |
9993 | case DW_OP_fbreg: | |
9994 | return "DW_OP_fbreg"; | |
9995 | case DW_OP_bregx: | |
9996 | return "DW_OP_bregx"; | |
9997 | case DW_OP_piece: | |
9998 | return "DW_OP_piece"; | |
9999 | case DW_OP_deref_size: | |
10000 | return "DW_OP_deref_size"; | |
10001 | case DW_OP_xderef_size: | |
10002 | return "DW_OP_xderef_size"; | |
10003 | case DW_OP_nop: | |
10004 | return "DW_OP_nop"; | |
b7619582 | 10005 | /* DWARF 3 extensions. */ |
ed348acc EZ |
10006 | case DW_OP_push_object_address: |
10007 | return "DW_OP_push_object_address"; | |
10008 | case DW_OP_call2: | |
10009 | return "DW_OP_call2"; | |
10010 | case DW_OP_call4: | |
10011 | return "DW_OP_call4"; | |
10012 | case DW_OP_call_ref: | |
10013 | return "DW_OP_call_ref"; | |
b7619582 GF |
10014 | /* GNU extensions. */ |
10015 | case DW_OP_form_tls_address: | |
10016 | return "DW_OP_form_tls_address"; | |
10017 | case DW_OP_call_frame_cfa: | |
10018 | return "DW_OP_call_frame_cfa"; | |
10019 | case DW_OP_bit_piece: | |
10020 | return "DW_OP_bit_piece"; | |
ed348acc EZ |
10021 | case DW_OP_GNU_push_tls_address: |
10022 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
10023 | case DW_OP_GNU_uninit: |
10024 | return "DW_OP_GNU_uninit"; | |
b7619582 GF |
10025 | /* HP extensions. */ |
10026 | case DW_OP_HP_is_value: | |
10027 | return "DW_OP_HP_is_value"; | |
10028 | case DW_OP_HP_fltconst4: | |
10029 | return "DW_OP_HP_fltconst4"; | |
10030 | case DW_OP_HP_fltconst8: | |
10031 | return "DW_OP_HP_fltconst8"; | |
10032 | case DW_OP_HP_mod_range: | |
10033 | return "DW_OP_HP_mod_range"; | |
10034 | case DW_OP_HP_unmod_range: | |
10035 | return "DW_OP_HP_unmod_range"; | |
10036 | case DW_OP_HP_tls: | |
10037 | return "DW_OP_HP_tls"; | |
c906108c SS |
10038 | default: |
10039 | return "OP_<unknown>"; | |
10040 | } | |
10041 | } | |
10042 | ||
10043 | static char * | |
fba45db2 | 10044 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
10045 | { |
10046 | if (mybool) | |
10047 | return "TRUE"; | |
10048 | else | |
10049 | return "FALSE"; | |
10050 | } | |
10051 | ||
10052 | /* Convert a DWARF type code into its string name. */ | |
10053 | ||
10054 | static char * | |
aa1ee363 | 10055 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
10056 | { |
10057 | switch (enc) | |
10058 | { | |
b7619582 GF |
10059 | case DW_ATE_void: |
10060 | return "DW_ATE_void"; | |
c906108c SS |
10061 | case DW_ATE_address: |
10062 | return "DW_ATE_address"; | |
10063 | case DW_ATE_boolean: | |
10064 | return "DW_ATE_boolean"; | |
10065 | case DW_ATE_complex_float: | |
10066 | return "DW_ATE_complex_float"; | |
10067 | case DW_ATE_float: | |
10068 | return "DW_ATE_float"; | |
10069 | case DW_ATE_signed: | |
10070 | return "DW_ATE_signed"; | |
10071 | case DW_ATE_signed_char: | |
10072 | return "DW_ATE_signed_char"; | |
10073 | case DW_ATE_unsigned: | |
10074 | return "DW_ATE_unsigned"; | |
10075 | case DW_ATE_unsigned_char: | |
10076 | return "DW_ATE_unsigned_char"; | |
b7619582 | 10077 | /* DWARF 3. */ |
d9fa45fe DC |
10078 | case DW_ATE_imaginary_float: |
10079 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
10080 | case DW_ATE_packed_decimal: |
10081 | return "DW_ATE_packed_decimal"; | |
10082 | case DW_ATE_numeric_string: | |
10083 | return "DW_ATE_numeric_string"; | |
10084 | case DW_ATE_edited: | |
10085 | return "DW_ATE_edited"; | |
10086 | case DW_ATE_signed_fixed: | |
10087 | return "DW_ATE_signed_fixed"; | |
10088 | case DW_ATE_unsigned_fixed: | |
10089 | return "DW_ATE_unsigned_fixed"; | |
10090 | case DW_ATE_decimal_float: | |
10091 | return "DW_ATE_decimal_float"; | |
10092 | /* HP extensions. */ | |
10093 | case DW_ATE_HP_float80: | |
10094 | return "DW_ATE_HP_float80"; | |
10095 | case DW_ATE_HP_complex_float80: | |
10096 | return "DW_ATE_HP_complex_float80"; | |
10097 | case DW_ATE_HP_float128: | |
10098 | return "DW_ATE_HP_float128"; | |
10099 | case DW_ATE_HP_complex_float128: | |
10100 | return "DW_ATE_HP_complex_float128"; | |
10101 | case DW_ATE_HP_floathpintel: | |
10102 | return "DW_ATE_HP_floathpintel"; | |
10103 | case DW_ATE_HP_imaginary_float80: | |
10104 | return "DW_ATE_HP_imaginary_float80"; | |
10105 | case DW_ATE_HP_imaginary_float128: | |
10106 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
10107 | default: |
10108 | return "DW_ATE_<unknown>"; | |
10109 | } | |
10110 | } | |
10111 | ||
10112 | /* Convert a DWARF call frame info operation to its string name. */ | |
10113 | ||
10114 | #if 0 | |
10115 | static char * | |
aa1ee363 | 10116 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
10117 | { |
10118 | switch (cfi_opc) | |
10119 | { | |
10120 | case DW_CFA_advance_loc: | |
10121 | return "DW_CFA_advance_loc"; | |
10122 | case DW_CFA_offset: | |
10123 | return "DW_CFA_offset"; | |
10124 | case DW_CFA_restore: | |
10125 | return "DW_CFA_restore"; | |
10126 | case DW_CFA_nop: | |
10127 | return "DW_CFA_nop"; | |
10128 | case DW_CFA_set_loc: | |
10129 | return "DW_CFA_set_loc"; | |
10130 | case DW_CFA_advance_loc1: | |
10131 | return "DW_CFA_advance_loc1"; | |
10132 | case DW_CFA_advance_loc2: | |
10133 | return "DW_CFA_advance_loc2"; | |
10134 | case DW_CFA_advance_loc4: | |
10135 | return "DW_CFA_advance_loc4"; | |
10136 | case DW_CFA_offset_extended: | |
10137 | return "DW_CFA_offset_extended"; | |
10138 | case DW_CFA_restore_extended: | |
10139 | return "DW_CFA_restore_extended"; | |
10140 | case DW_CFA_undefined: | |
10141 | return "DW_CFA_undefined"; | |
10142 | case DW_CFA_same_value: | |
10143 | return "DW_CFA_same_value"; | |
10144 | case DW_CFA_register: | |
10145 | return "DW_CFA_register"; | |
10146 | case DW_CFA_remember_state: | |
10147 | return "DW_CFA_remember_state"; | |
10148 | case DW_CFA_restore_state: | |
10149 | return "DW_CFA_restore_state"; | |
10150 | case DW_CFA_def_cfa: | |
10151 | return "DW_CFA_def_cfa"; | |
10152 | case DW_CFA_def_cfa_register: | |
10153 | return "DW_CFA_def_cfa_register"; | |
10154 | case DW_CFA_def_cfa_offset: | |
10155 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 10156 | /* DWARF 3. */ |
985cb1a3 JM |
10157 | case DW_CFA_def_cfa_expression: |
10158 | return "DW_CFA_def_cfa_expression"; | |
10159 | case DW_CFA_expression: | |
10160 | return "DW_CFA_expression"; | |
10161 | case DW_CFA_offset_extended_sf: | |
10162 | return "DW_CFA_offset_extended_sf"; | |
10163 | case DW_CFA_def_cfa_sf: | |
10164 | return "DW_CFA_def_cfa_sf"; | |
10165 | case DW_CFA_def_cfa_offset_sf: | |
10166 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
10167 | case DW_CFA_val_offset: |
10168 | return "DW_CFA_val_offset"; | |
10169 | case DW_CFA_val_offset_sf: | |
10170 | return "DW_CFA_val_offset_sf"; | |
10171 | case DW_CFA_val_expression: | |
10172 | return "DW_CFA_val_expression"; | |
10173 | /* SGI/MIPS specific. */ | |
c906108c SS |
10174 | case DW_CFA_MIPS_advance_loc8: |
10175 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 10176 | /* GNU extensions. */ |
985cb1a3 JM |
10177 | case DW_CFA_GNU_window_save: |
10178 | return "DW_CFA_GNU_window_save"; | |
10179 | case DW_CFA_GNU_args_size: | |
10180 | return "DW_CFA_GNU_args_size"; | |
10181 | case DW_CFA_GNU_negative_offset_extended: | |
10182 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
10183 | default: |
10184 | return "DW_CFA_<unknown>"; | |
10185 | } | |
10186 | } | |
10187 | #endif | |
10188 | ||
f9aca02d | 10189 | static void |
d97bc12b | 10190 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
10191 | { |
10192 | unsigned int i; | |
10193 | ||
d97bc12b DE |
10194 | print_spaces (indent, f); |
10195 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 10196 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
10197 | |
10198 | if (die->parent != NULL) | |
10199 | { | |
10200 | print_spaces (indent, f); | |
10201 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
10202 | die->parent->offset); | |
10203 | } | |
10204 | ||
10205 | print_spaces (indent, f); | |
10206 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 10207 | dwarf_bool_name (die->child != NULL)); |
c906108c | 10208 | |
d97bc12b DE |
10209 | print_spaces (indent, f); |
10210 | fprintf_unfiltered (f, " attributes:\n"); | |
10211 | ||
c906108c SS |
10212 | for (i = 0; i < die->num_attrs; ++i) |
10213 | { | |
d97bc12b DE |
10214 | print_spaces (indent, f); |
10215 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
10216 | dwarf_attr_name (die->attrs[i].name), |
10217 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 10218 | |
c906108c SS |
10219 | switch (die->attrs[i].form) |
10220 | { | |
10221 | case DW_FORM_ref_addr: | |
10222 | case DW_FORM_addr: | |
d97bc12b | 10223 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 10224 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
10225 | break; |
10226 | case DW_FORM_block2: | |
10227 | case DW_FORM_block4: | |
10228 | case DW_FORM_block: | |
10229 | case DW_FORM_block1: | |
d97bc12b | 10230 | fprintf_unfiltered (f, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 10231 | break; |
10b3939b DJ |
10232 | case DW_FORM_ref1: |
10233 | case DW_FORM_ref2: | |
10234 | case DW_FORM_ref4: | |
d97bc12b | 10235 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
10236 | (long) (DW_ADDR (&die->attrs[i]))); |
10237 | break; | |
c906108c SS |
10238 | case DW_FORM_data1: |
10239 | case DW_FORM_data2: | |
10240 | case DW_FORM_data4: | |
ce5d95e1 | 10241 | case DW_FORM_data8: |
c906108c SS |
10242 | case DW_FORM_udata: |
10243 | case DW_FORM_sdata: | |
43bbcdc2 PH |
10244 | fprintf_unfiltered (f, "constant: %s", |
10245 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 10246 | break; |
348e048f DE |
10247 | case DW_FORM_sig8: |
10248 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) | |
10249 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
10250 | DW_SIGNATURED_TYPE (&die->attrs[i])->offset); | |
10251 | else | |
10252 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
10253 | break; | |
c906108c | 10254 | case DW_FORM_string: |
4bdf3d34 | 10255 | case DW_FORM_strp: |
8285870a | 10256 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 10257 | DW_STRING (&die->attrs[i]) |
8285870a JK |
10258 | ? DW_STRING (&die->attrs[i]) : "", |
10259 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
10260 | break; |
10261 | case DW_FORM_flag: | |
10262 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 10263 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 10264 | else |
d97bc12b | 10265 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 10266 | break; |
a8329558 KW |
10267 | case DW_FORM_indirect: |
10268 | /* the reader will have reduced the indirect form to | |
10269 | the "base form" so this form should not occur */ | |
d97bc12b | 10270 | fprintf_unfiltered (f, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 10271 | break; |
c906108c | 10272 | default: |
d97bc12b | 10273 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 10274 | die->attrs[i].form); |
d97bc12b | 10275 | break; |
c906108c | 10276 | } |
d97bc12b | 10277 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
10278 | } |
10279 | } | |
10280 | ||
f9aca02d | 10281 | static void |
d97bc12b | 10282 | dump_die_for_error (struct die_info *die) |
c906108c | 10283 | { |
d97bc12b DE |
10284 | dump_die_shallow (gdb_stderr, 0, die); |
10285 | } | |
10286 | ||
10287 | static void | |
10288 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
10289 | { | |
10290 | int indent = level * 4; | |
10291 | ||
10292 | gdb_assert (die != NULL); | |
10293 | ||
10294 | if (level >= max_level) | |
10295 | return; | |
10296 | ||
10297 | dump_die_shallow (f, indent, die); | |
10298 | ||
10299 | if (die->child != NULL) | |
c906108c | 10300 | { |
d97bc12b DE |
10301 | print_spaces (indent, f); |
10302 | fprintf_unfiltered (f, " Children:"); | |
10303 | if (level + 1 < max_level) | |
10304 | { | |
10305 | fprintf_unfiltered (f, "\n"); | |
10306 | dump_die_1 (f, level + 1, max_level, die->child); | |
10307 | } | |
10308 | else | |
10309 | { | |
10310 | fprintf_unfiltered (f, " [not printed, max nesting level reached]\n"); | |
10311 | } | |
10312 | } | |
10313 | ||
10314 | if (die->sibling != NULL && level > 0) | |
10315 | { | |
10316 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
10317 | } |
10318 | } | |
10319 | ||
d97bc12b DE |
10320 | /* This is called from the pdie macro in gdbinit.in. |
10321 | It's not static so gcc will keep a copy callable from gdb. */ | |
10322 | ||
10323 | void | |
10324 | dump_die (struct die_info *die, int max_level) | |
10325 | { | |
10326 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
10327 | } | |
10328 | ||
f9aca02d | 10329 | static void |
51545339 | 10330 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10331 | { |
51545339 | 10332 | void **slot; |
c906108c | 10333 | |
51545339 DJ |
10334 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
10335 | ||
10336 | *slot = die; | |
c906108c SS |
10337 | } |
10338 | ||
93311388 DE |
10339 | static int |
10340 | is_ref_attr (struct attribute *attr) | |
c906108c | 10341 | { |
c906108c SS |
10342 | switch (attr->form) |
10343 | { | |
10344 | case DW_FORM_ref_addr: | |
c906108c SS |
10345 | case DW_FORM_ref1: |
10346 | case DW_FORM_ref2: | |
10347 | case DW_FORM_ref4: | |
613e1657 | 10348 | case DW_FORM_ref8: |
c906108c | 10349 | case DW_FORM_ref_udata: |
93311388 | 10350 | return 1; |
c906108c | 10351 | default: |
93311388 | 10352 | return 0; |
c906108c | 10353 | } |
93311388 DE |
10354 | } |
10355 | ||
10356 | static unsigned int | |
10357 | dwarf2_get_ref_die_offset (struct attribute *attr) | |
10358 | { | |
10359 | if (is_ref_attr (attr)) | |
10360 | return DW_ADDR (attr); | |
10361 | ||
10362 | complaint (&symfile_complaints, | |
10363 | _("unsupported die ref attribute form: '%s'"), | |
10364 | dwarf_form_name (attr->form)); | |
10365 | return 0; | |
c906108c SS |
10366 | } |
10367 | ||
43bbcdc2 PH |
10368 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
10369 | * the value held by the attribute is not constant. */ | |
a02abb62 | 10370 | |
43bbcdc2 | 10371 | static LONGEST |
a02abb62 JB |
10372 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
10373 | { | |
10374 | if (attr->form == DW_FORM_sdata) | |
10375 | return DW_SND (attr); | |
10376 | else if (attr->form == DW_FORM_udata | |
10377 | || attr->form == DW_FORM_data1 | |
10378 | || attr->form == DW_FORM_data2 | |
10379 | || attr->form == DW_FORM_data4 | |
10380 | || attr->form == DW_FORM_data8) | |
10381 | return DW_UNSND (attr); | |
10382 | else | |
10383 | { | |
e2e0b3e5 | 10384 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
10385 | dwarf_form_name (attr->form)); |
10386 | return default_value; | |
10387 | } | |
10388 | } | |
10389 | ||
03dd20cc | 10390 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
10391 | unit and add it to our queue. |
10392 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
10393 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 10394 | |
348e048f | 10395 | static int |
03dd20cc DJ |
10396 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
10397 | struct dwarf2_per_cu_data *per_cu) | |
10398 | { | |
10399 | /* Mark the dependence relation so that we don't flush PER_CU | |
10400 | too early. */ | |
10401 | dwarf2_add_dependence (this_cu, per_cu); | |
10402 | ||
10403 | /* If it's already on the queue, we have nothing to do. */ | |
10404 | if (per_cu->queued) | |
348e048f | 10405 | return 0; |
03dd20cc DJ |
10406 | |
10407 | /* If the compilation unit is already loaded, just mark it as | |
10408 | used. */ | |
10409 | if (per_cu->cu != NULL) | |
10410 | { | |
10411 | per_cu->cu->last_used = 0; | |
348e048f | 10412 | return 0; |
03dd20cc DJ |
10413 | } |
10414 | ||
10415 | /* Add it to the queue. */ | |
10416 | queue_comp_unit (per_cu, this_cu->objfile); | |
348e048f DE |
10417 | |
10418 | return 1; | |
10419 | } | |
10420 | ||
10421 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
10422 | On entry *REF_CU is the CU of SRC_DIE. | |
10423 | On exit *REF_CU is the CU of the result. */ | |
10424 | ||
10425 | static struct die_info * | |
10426 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
10427 | struct dwarf2_cu **ref_cu) | |
10428 | { | |
10429 | struct die_info *die; | |
10430 | ||
10431 | if (is_ref_attr (attr)) | |
10432 | die = follow_die_ref (src_die, attr, ref_cu); | |
10433 | else if (attr->form == DW_FORM_sig8) | |
10434 | die = follow_die_sig (src_die, attr, ref_cu); | |
10435 | else | |
10436 | { | |
10437 | dump_die_for_error (src_die); | |
10438 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
10439 | (*ref_cu)->objfile->name); | |
10440 | } | |
10441 | ||
10442 | return die; | |
03dd20cc DJ |
10443 | } |
10444 | ||
f504f079 DE |
10445 | /* Follow reference attribute ATTR of SRC_DIE. |
10446 | On entry *REF_CU is the CU of SRC_DIE. | |
10447 | On exit *REF_CU is the CU of the result. */ | |
10448 | ||
f9aca02d | 10449 | static struct die_info * |
10b3939b | 10450 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
f2f0e013 | 10451 | struct dwarf2_cu **ref_cu) |
c906108c SS |
10452 | { |
10453 | struct die_info *die; | |
10b3939b | 10454 | unsigned int offset; |
10b3939b | 10455 | struct die_info temp_die; |
f2f0e013 | 10456 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 10457 | |
348e048f DE |
10458 | gdb_assert (cu->per_cu != NULL); |
10459 | ||
c764a876 | 10460 | offset = dwarf2_get_ref_die_offset (attr); |
10b3939b | 10461 | |
348e048f DE |
10462 | if (cu->per_cu->from_debug_types) |
10463 | { | |
10464 | /* .debug_types CUs cannot reference anything outside their CU. | |
10465 | If they need to, they have to reference a signatured type via | |
10466 | DW_FORM_sig8. */ | |
10467 | if (! offset_in_cu_p (&cu->header, offset)) | |
10468 | goto not_found; | |
10469 | target_cu = cu; | |
10470 | } | |
10471 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
10472 | { |
10473 | struct dwarf2_per_cu_data *per_cu; | |
45452591 | 10474 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
10475 | |
10476 | /* If necessary, add it to the queue and load its DIEs. */ | |
348e048f DE |
10477 | if (maybe_queue_comp_unit (cu, per_cu)) |
10478 | load_full_comp_unit (per_cu, cu->objfile); | |
03dd20cc | 10479 | |
10b3939b DJ |
10480 | target_cu = per_cu->cu; |
10481 | } | |
10482 | else | |
10483 | target_cu = cu; | |
c906108c | 10484 | |
f2f0e013 | 10485 | *ref_cu = target_cu; |
51545339 DJ |
10486 | temp_die.offset = offset; |
10487 | die = htab_find_with_hash (target_cu->die_hash, &temp_die, offset); | |
10488 | if (die) | |
10489 | return die; | |
10b3939b | 10490 | |
348e048f DE |
10491 | not_found: |
10492 | ||
10493 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
10494 | "at 0x%x [in module %s]"), | |
10495 | offset, src_die->offset, cu->objfile->name); | |
10496 | } | |
10497 | ||
10498 | /* Follow the signature attribute ATTR in SRC_DIE. | |
10499 | On entry *REF_CU is the CU of SRC_DIE. | |
10500 | On exit *REF_CU is the CU of the result. */ | |
10501 | ||
10502 | static struct die_info * | |
10503 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
10504 | struct dwarf2_cu **ref_cu) | |
10505 | { | |
10506 | struct objfile *objfile = (*ref_cu)->objfile; | |
10507 | struct die_info temp_die; | |
10508 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
10509 | struct dwarf2_cu *sig_cu; | |
10510 | struct die_info *die; | |
10511 | ||
10512 | /* sig_type will be NULL if the signatured type is missing from | |
10513 | the debug info. */ | |
10514 | if (sig_type == NULL) | |
10515 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
10516 | "at 0x%x [in module %s]"), | |
10517 | src_die->offset, objfile->name); | |
10518 | ||
10519 | /* If necessary, add it to the queue and load its DIEs. */ | |
10520 | ||
10521 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu)) | |
10522 | read_signatured_type (objfile, sig_type); | |
10523 | ||
10524 | gdb_assert (sig_type->per_cu.cu != NULL); | |
10525 | ||
10526 | sig_cu = sig_type->per_cu.cu; | |
10527 | temp_die.offset = sig_cu->header.offset + sig_type->type_offset; | |
10528 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, temp_die.offset); | |
10529 | if (die) | |
10530 | { | |
10531 | *ref_cu = sig_cu; | |
10532 | return die; | |
10533 | } | |
10534 | ||
10535 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced from DIE " | |
10536 | "at 0x%x [in module %s]"), | |
10537 | sig_type->type_offset, src_die->offset, objfile->name); | |
10538 | } | |
10539 | ||
10540 | /* Given an offset of a signatured type, return its signatured_type. */ | |
10541 | ||
10542 | static struct signatured_type * | |
10543 | lookup_signatured_type_at_offset (struct objfile *objfile, unsigned int offset) | |
10544 | { | |
10545 | gdb_byte *info_ptr = dwarf2_per_objfile->types.buffer + offset; | |
10546 | unsigned int length, initial_length_size; | |
10547 | unsigned int sig_offset; | |
10548 | struct signatured_type find_entry, *type_sig; | |
10549 | ||
10550 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
10551 | sig_offset = (initial_length_size | |
10552 | + 2 /*version*/ | |
10553 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
10554 | + 1 /*address_size*/); | |
10555 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
10556 | type_sig = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
10557 | ||
10558 | /* This is only used to lookup previously recorded types. | |
10559 | If we didn't find it, it's our bug. */ | |
10560 | gdb_assert (type_sig != NULL); | |
10561 | gdb_assert (offset == type_sig->offset); | |
10562 | ||
10563 | return type_sig; | |
10564 | } | |
10565 | ||
10566 | /* Read in signatured type at OFFSET and build its CU and die(s). */ | |
10567 | ||
10568 | static void | |
10569 | read_signatured_type_at_offset (struct objfile *objfile, | |
10570 | unsigned int offset) | |
10571 | { | |
10572 | struct signatured_type *type_sig; | |
10573 | ||
be391dca TT |
10574 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
10575 | ||
348e048f DE |
10576 | /* We have the section offset, but we need the signature to do the |
10577 | hash table lookup. */ | |
10578 | type_sig = lookup_signatured_type_at_offset (objfile, offset); | |
10579 | ||
10580 | gdb_assert (type_sig->per_cu.cu == NULL); | |
10581 | ||
10582 | read_signatured_type (objfile, type_sig); | |
10583 | ||
10584 | gdb_assert (type_sig->per_cu.cu != NULL); | |
10585 | } | |
10586 | ||
10587 | /* Read in a signatured type and build its CU and DIEs. */ | |
10588 | ||
10589 | static void | |
10590 | read_signatured_type (struct objfile *objfile, | |
10591 | struct signatured_type *type_sig) | |
10592 | { | |
10593 | gdb_byte *types_ptr = dwarf2_per_objfile->types.buffer + type_sig->offset; | |
10594 | struct die_reader_specs reader_specs; | |
10595 | struct dwarf2_cu *cu; | |
10596 | ULONGEST signature; | |
10597 | struct cleanup *back_to, *free_cu_cleanup; | |
10598 | struct attribute *attr; | |
10599 | ||
10600 | gdb_assert (type_sig->per_cu.cu == NULL); | |
10601 | ||
10602 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
10603 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
10604 | obstack_init (&cu->comp_unit_obstack); | |
10605 | cu->objfile = objfile; | |
10606 | type_sig->per_cu.cu = cu; | |
10607 | cu->per_cu = &type_sig->per_cu; | |
10608 | ||
10609 | /* If an error occurs while loading, release our storage. */ | |
10610 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
10611 | ||
10612 | types_ptr = read_type_comp_unit_head (&cu->header, &signature, | |
10613 | types_ptr, objfile->obfd); | |
10614 | gdb_assert (signature == type_sig->signature); | |
10615 | ||
10616 | cu->die_hash | |
10617 | = htab_create_alloc_ex (cu->header.length / 12, | |
10618 | die_hash, | |
10619 | die_eq, | |
10620 | NULL, | |
10621 | &cu->comp_unit_obstack, | |
10622 | hashtab_obstack_allocate, | |
10623 | dummy_obstack_deallocate); | |
10624 | ||
10625 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
10626 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
10627 | ||
10628 | init_cu_die_reader (&reader_specs, cu); | |
10629 | ||
10630 | cu->dies = read_die_and_children (&reader_specs, types_ptr, &types_ptr, | |
10631 | NULL /*parent*/); | |
10632 | ||
10633 | /* We try not to read any attributes in this function, because not | |
10634 | all objfiles needed for references have been loaded yet, and symbol | |
10635 | table processing isn't initialized. But we have to set the CU language, | |
10636 | or we won't be able to build types correctly. */ | |
10637 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
10638 | if (attr) | |
10639 | set_cu_language (DW_UNSND (attr), cu); | |
10640 | else | |
10641 | set_cu_language (language_minimal, cu); | |
10642 | ||
10643 | do_cleanups (back_to); | |
10644 | ||
10645 | /* We've successfully allocated this compilation unit. Let our caller | |
10646 | clean it up when finished with it. */ | |
10647 | discard_cleanups (free_cu_cleanup); | |
10648 | ||
10649 | type_sig->per_cu.cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
10650 | dwarf2_per_objfile->read_in_chain = &type_sig->per_cu; | |
c906108c SS |
10651 | } |
10652 | ||
c906108c SS |
10653 | /* Decode simple location descriptions. |
10654 | Given a pointer to a dwarf block that defines a location, compute | |
10655 | the location and return the value. | |
10656 | ||
4cecd739 DJ |
10657 | NOTE drow/2003-11-18: This function is called in two situations |
10658 | now: for the address of static or global variables (partial symbols | |
10659 | only) and for offsets into structures which are expected to be | |
10660 | (more or less) constant. The partial symbol case should go away, | |
10661 | and only the constant case should remain. That will let this | |
10662 | function complain more accurately. A few special modes are allowed | |
10663 | without complaint for global variables (for instance, global | |
10664 | register values and thread-local values). | |
c906108c SS |
10665 | |
10666 | A location description containing no operations indicates that the | |
4cecd739 | 10667 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
10668 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
10669 | callers will only want a very basic result and this can become a | |
10670 | complaint. | |
c906108c | 10671 | |
c906108c SS |
10672 | Note that stack[0] is unused except as a default error return. |
10673 | Note that stack overflow is not yet handled. */ | |
10674 | ||
10675 | static CORE_ADDR | |
e7c27a73 | 10676 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 10677 | { |
e7c27a73 DJ |
10678 | struct objfile *objfile = cu->objfile; |
10679 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
10680 | int i; |
10681 | int size = blk->size; | |
fe1b8b76 | 10682 | gdb_byte *data = blk->data; |
c906108c SS |
10683 | CORE_ADDR stack[64]; |
10684 | int stacki; | |
10685 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 10686 | gdb_byte op; |
c906108c SS |
10687 | |
10688 | i = 0; | |
10689 | stacki = 0; | |
10690 | stack[stacki] = 0; | |
c906108c SS |
10691 | |
10692 | while (i < size) | |
10693 | { | |
c906108c SS |
10694 | op = data[i++]; |
10695 | switch (op) | |
10696 | { | |
f1bea926 JM |
10697 | case DW_OP_lit0: |
10698 | case DW_OP_lit1: | |
10699 | case DW_OP_lit2: | |
10700 | case DW_OP_lit3: | |
10701 | case DW_OP_lit4: | |
10702 | case DW_OP_lit5: | |
10703 | case DW_OP_lit6: | |
10704 | case DW_OP_lit7: | |
10705 | case DW_OP_lit8: | |
10706 | case DW_OP_lit9: | |
10707 | case DW_OP_lit10: | |
10708 | case DW_OP_lit11: | |
10709 | case DW_OP_lit12: | |
10710 | case DW_OP_lit13: | |
10711 | case DW_OP_lit14: | |
10712 | case DW_OP_lit15: | |
10713 | case DW_OP_lit16: | |
10714 | case DW_OP_lit17: | |
10715 | case DW_OP_lit18: | |
10716 | case DW_OP_lit19: | |
10717 | case DW_OP_lit20: | |
10718 | case DW_OP_lit21: | |
10719 | case DW_OP_lit22: | |
10720 | case DW_OP_lit23: | |
10721 | case DW_OP_lit24: | |
10722 | case DW_OP_lit25: | |
10723 | case DW_OP_lit26: | |
10724 | case DW_OP_lit27: | |
10725 | case DW_OP_lit28: | |
10726 | case DW_OP_lit29: | |
10727 | case DW_OP_lit30: | |
10728 | case DW_OP_lit31: | |
10729 | stack[++stacki] = op - DW_OP_lit0; | |
10730 | break; | |
10731 | ||
c906108c SS |
10732 | case DW_OP_reg0: |
10733 | case DW_OP_reg1: | |
10734 | case DW_OP_reg2: | |
10735 | case DW_OP_reg3: | |
10736 | case DW_OP_reg4: | |
10737 | case DW_OP_reg5: | |
10738 | case DW_OP_reg6: | |
10739 | case DW_OP_reg7: | |
10740 | case DW_OP_reg8: | |
10741 | case DW_OP_reg9: | |
10742 | case DW_OP_reg10: | |
10743 | case DW_OP_reg11: | |
10744 | case DW_OP_reg12: | |
10745 | case DW_OP_reg13: | |
10746 | case DW_OP_reg14: | |
10747 | case DW_OP_reg15: | |
10748 | case DW_OP_reg16: | |
10749 | case DW_OP_reg17: | |
10750 | case DW_OP_reg18: | |
10751 | case DW_OP_reg19: | |
10752 | case DW_OP_reg20: | |
10753 | case DW_OP_reg21: | |
10754 | case DW_OP_reg22: | |
10755 | case DW_OP_reg23: | |
10756 | case DW_OP_reg24: | |
10757 | case DW_OP_reg25: | |
10758 | case DW_OP_reg26: | |
10759 | case DW_OP_reg27: | |
10760 | case DW_OP_reg28: | |
10761 | case DW_OP_reg29: | |
10762 | case DW_OP_reg30: | |
10763 | case DW_OP_reg31: | |
c906108c | 10764 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
10765 | if (i < size) |
10766 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
10767 | break; |
10768 | ||
10769 | case DW_OP_regx: | |
c906108c SS |
10770 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
10771 | i += bytes_read; | |
c906108c | 10772 | stack[++stacki] = unsnd; |
4cecd739 DJ |
10773 | if (i < size) |
10774 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
10775 | break; |
10776 | ||
10777 | case DW_OP_addr: | |
107d2387 | 10778 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 10779 | cu, &bytes_read); |
107d2387 | 10780 | i += bytes_read; |
c906108c SS |
10781 | break; |
10782 | ||
10783 | case DW_OP_const1u: | |
10784 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
10785 | i += 1; | |
10786 | break; | |
10787 | ||
10788 | case DW_OP_const1s: | |
10789 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
10790 | i += 1; | |
10791 | break; | |
10792 | ||
10793 | case DW_OP_const2u: | |
10794 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
10795 | i += 2; | |
10796 | break; | |
10797 | ||
10798 | case DW_OP_const2s: | |
10799 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
10800 | i += 2; | |
10801 | break; | |
10802 | ||
10803 | case DW_OP_const4u: | |
10804 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
10805 | i += 4; | |
10806 | break; | |
10807 | ||
10808 | case DW_OP_const4s: | |
10809 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
10810 | i += 4; | |
10811 | break; | |
10812 | ||
10813 | case DW_OP_constu: | |
10814 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 10815 | &bytes_read); |
c906108c SS |
10816 | i += bytes_read; |
10817 | break; | |
10818 | ||
10819 | case DW_OP_consts: | |
10820 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
10821 | i += bytes_read; | |
10822 | break; | |
10823 | ||
f1bea926 JM |
10824 | case DW_OP_dup: |
10825 | stack[stacki + 1] = stack[stacki]; | |
10826 | stacki++; | |
10827 | break; | |
10828 | ||
c906108c SS |
10829 | case DW_OP_plus: |
10830 | stack[stacki - 1] += stack[stacki]; | |
10831 | stacki--; | |
10832 | break; | |
10833 | ||
10834 | case DW_OP_plus_uconst: | |
10835 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
10836 | i += bytes_read; | |
10837 | break; | |
10838 | ||
10839 | case DW_OP_minus: | |
f1bea926 | 10840 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
10841 | stacki--; |
10842 | break; | |
10843 | ||
7a292a7a | 10844 | case DW_OP_deref: |
7a292a7a | 10845 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
10846 | this using GDB's address_class enum. This is valid for partial |
10847 | global symbols, although the variable's address will be bogus | |
10848 | in the psymtab. */ | |
7a292a7a | 10849 | if (i < size) |
4d3c2250 | 10850 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
10851 | break; |
10852 | ||
9d774e44 | 10853 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
10854 | /* The top of the stack has the offset from the beginning |
10855 | of the thread control block at which the variable is located. */ | |
10856 | /* Nothing should follow this operator, so the top of stack would | |
10857 | be returned. */ | |
4cecd739 DJ |
10858 | /* This is valid for partial global symbols, but the variable's |
10859 | address will be bogus in the psymtab. */ | |
9d774e44 | 10860 | if (i < size) |
4d3c2250 | 10861 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
10862 | break; |
10863 | ||
42be36b3 CT |
10864 | case DW_OP_GNU_uninit: |
10865 | break; | |
10866 | ||
c906108c | 10867 | default: |
e2e0b3e5 | 10868 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
4d3c2250 | 10869 | dwarf_stack_op_name (op)); |
c906108c SS |
10870 | return (stack[stacki]); |
10871 | } | |
10872 | } | |
10873 | return (stack[stacki]); | |
10874 | } | |
10875 | ||
10876 | /* memory allocation interface */ | |
10877 | ||
c906108c | 10878 | static struct dwarf_block * |
7b5a2f43 | 10879 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
10880 | { |
10881 | struct dwarf_block *blk; | |
10882 | ||
10883 | blk = (struct dwarf_block *) | |
7b5a2f43 | 10884 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
10885 | return (blk); |
10886 | } | |
10887 | ||
10888 | static struct abbrev_info * | |
f3dd6933 | 10889 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
10890 | { |
10891 | struct abbrev_info *abbrev; | |
10892 | ||
f3dd6933 DJ |
10893 | abbrev = (struct abbrev_info *) |
10894 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
10895 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
10896 | return (abbrev); | |
10897 | } | |
10898 | ||
10899 | static struct die_info * | |
b60c80d6 | 10900 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
10901 | { |
10902 | struct die_info *die; | |
b60c80d6 DJ |
10903 | size_t size = sizeof (struct die_info); |
10904 | ||
10905 | if (num_attrs > 1) | |
10906 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 10907 | |
b60c80d6 | 10908 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
10909 | memset (die, 0, sizeof (struct die_info)); |
10910 | return (die); | |
10911 | } | |
2e276125 JB |
10912 | |
10913 | \f | |
10914 | /* Macro support. */ | |
10915 | ||
10916 | ||
10917 | /* Return the full name of file number I in *LH's file name table. | |
10918 | Use COMP_DIR as the name of the current directory of the | |
10919 | compilation. The result is allocated using xmalloc; the caller is | |
10920 | responsible for freeing it. */ | |
10921 | static char * | |
10922 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
10923 | { | |
6a83a1e6 EZ |
10924 | /* Is the file number a valid index into the line header's file name |
10925 | table? Remember that file numbers start with one, not zero. */ | |
10926 | if (1 <= file && file <= lh->num_file_names) | |
10927 | { | |
10928 | struct file_entry *fe = &lh->file_names[file - 1]; | |
2e276125 | 10929 | |
6a83a1e6 EZ |
10930 | if (IS_ABSOLUTE_PATH (fe->name)) |
10931 | return xstrdup (fe->name); | |
10932 | else | |
10933 | { | |
10934 | const char *dir; | |
10935 | int dir_len; | |
10936 | char *full_name; | |
10937 | ||
10938 | if (fe->dir_index) | |
10939 | dir = lh->include_dirs[fe->dir_index - 1]; | |
10940 | else | |
10941 | dir = comp_dir; | |
10942 | ||
10943 | if (dir) | |
10944 | { | |
10945 | dir_len = strlen (dir); | |
10946 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
10947 | strcpy (full_name, dir); | |
10948 | full_name[dir_len] = '/'; | |
10949 | strcpy (full_name + dir_len + 1, fe->name); | |
10950 | return full_name; | |
10951 | } | |
10952 | else | |
10953 | return xstrdup (fe->name); | |
10954 | } | |
10955 | } | |
2e276125 JB |
10956 | else |
10957 | { | |
6a83a1e6 EZ |
10958 | /* The compiler produced a bogus file number. We can at least |
10959 | record the macro definitions made in the file, even if we | |
10960 | won't be able to find the file by name. */ | |
10961 | char fake_name[80]; | |
10962 | sprintf (fake_name, "<bad macro file number %d>", file); | |
2e276125 | 10963 | |
6a83a1e6 EZ |
10964 | complaint (&symfile_complaints, |
10965 | _("bad file number in macro information (%d)"), | |
10966 | file); | |
2e276125 | 10967 | |
6a83a1e6 | 10968 | return xstrdup (fake_name); |
2e276125 JB |
10969 | } |
10970 | } | |
10971 | ||
10972 | ||
10973 | static struct macro_source_file * | |
10974 | macro_start_file (int file, int line, | |
10975 | struct macro_source_file *current_file, | |
10976 | const char *comp_dir, | |
10977 | struct line_header *lh, struct objfile *objfile) | |
10978 | { | |
10979 | /* The full name of this source file. */ | |
10980 | char *full_name = file_full_name (file, lh, comp_dir); | |
10981 | ||
10982 | /* We don't create a macro table for this compilation unit | |
10983 | at all until we actually get a filename. */ | |
10984 | if (! pending_macros) | |
4a146b47 | 10985 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 10986 | objfile->macro_cache); |
2e276125 JB |
10987 | |
10988 | if (! current_file) | |
10989 | /* If we have no current file, then this must be the start_file | |
10990 | directive for the compilation unit's main source file. */ | |
10991 | current_file = macro_set_main (pending_macros, full_name); | |
10992 | else | |
10993 | current_file = macro_include (current_file, line, full_name); | |
10994 | ||
10995 | xfree (full_name); | |
10996 | ||
10997 | return current_file; | |
10998 | } | |
10999 | ||
11000 | ||
11001 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
11002 | followed by a null byte. */ | |
11003 | static char * | |
11004 | copy_string (const char *buf, int len) | |
11005 | { | |
11006 | char *s = xmalloc (len + 1); | |
11007 | memcpy (s, buf, len); | |
11008 | s[len] = '\0'; | |
11009 | ||
11010 | return s; | |
11011 | } | |
11012 | ||
11013 | ||
11014 | static const char * | |
11015 | consume_improper_spaces (const char *p, const char *body) | |
11016 | { | |
11017 | if (*p == ' ') | |
11018 | { | |
4d3c2250 | 11019 | complaint (&symfile_complaints, |
e2e0b3e5 | 11020 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 11021 | body); |
2e276125 JB |
11022 | |
11023 | while (*p == ' ') | |
11024 | p++; | |
11025 | } | |
11026 | ||
11027 | return p; | |
11028 | } | |
11029 | ||
11030 | ||
11031 | static void | |
11032 | parse_macro_definition (struct macro_source_file *file, int line, | |
11033 | const char *body) | |
11034 | { | |
11035 | const char *p; | |
11036 | ||
11037 | /* The body string takes one of two forms. For object-like macro | |
11038 | definitions, it should be: | |
11039 | ||
11040 | <macro name> " " <definition> | |
11041 | ||
11042 | For function-like macro definitions, it should be: | |
11043 | ||
11044 | <macro name> "() " <definition> | |
11045 | or | |
11046 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
11047 | ||
11048 | Spaces may appear only where explicitly indicated, and in the | |
11049 | <definition>. | |
11050 | ||
11051 | The Dwarf 2 spec says that an object-like macro's name is always | |
11052 | followed by a space, but versions of GCC around March 2002 omit | |
11053 | the space when the macro's definition is the empty string. | |
11054 | ||
11055 | The Dwarf 2 spec says that there should be no spaces between the | |
11056 | formal arguments in a function-like macro's formal argument list, | |
11057 | but versions of GCC around March 2002 include spaces after the | |
11058 | commas. */ | |
11059 | ||
11060 | ||
11061 | /* Find the extent of the macro name. The macro name is terminated | |
11062 | by either a space or null character (for an object-like macro) or | |
11063 | an opening paren (for a function-like macro). */ | |
11064 | for (p = body; *p; p++) | |
11065 | if (*p == ' ' || *p == '(') | |
11066 | break; | |
11067 | ||
11068 | if (*p == ' ' || *p == '\0') | |
11069 | { | |
11070 | /* It's an object-like macro. */ | |
11071 | int name_len = p - body; | |
11072 | char *name = copy_string (body, name_len); | |
11073 | const char *replacement; | |
11074 | ||
11075 | if (*p == ' ') | |
11076 | replacement = body + name_len + 1; | |
11077 | else | |
11078 | { | |
4d3c2250 | 11079 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11080 | replacement = body + name_len; |
11081 | } | |
11082 | ||
11083 | macro_define_object (file, line, name, replacement); | |
11084 | ||
11085 | xfree (name); | |
11086 | } | |
11087 | else if (*p == '(') | |
11088 | { | |
11089 | /* It's a function-like macro. */ | |
11090 | char *name = copy_string (body, p - body); | |
11091 | int argc = 0; | |
11092 | int argv_size = 1; | |
11093 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
11094 | ||
11095 | p++; | |
11096 | ||
11097 | p = consume_improper_spaces (p, body); | |
11098 | ||
11099 | /* Parse the formal argument list. */ | |
11100 | while (*p && *p != ')') | |
11101 | { | |
11102 | /* Find the extent of the current argument name. */ | |
11103 | const char *arg_start = p; | |
11104 | ||
11105 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
11106 | p++; | |
11107 | ||
11108 | if (! *p || p == arg_start) | |
4d3c2250 | 11109 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11110 | else |
11111 | { | |
11112 | /* Make sure argv has room for the new argument. */ | |
11113 | if (argc >= argv_size) | |
11114 | { | |
11115 | argv_size *= 2; | |
11116 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
11117 | } | |
11118 | ||
11119 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
11120 | } | |
11121 | ||
11122 | p = consume_improper_spaces (p, body); | |
11123 | ||
11124 | /* Consume the comma, if present. */ | |
11125 | if (*p == ',') | |
11126 | { | |
11127 | p++; | |
11128 | ||
11129 | p = consume_improper_spaces (p, body); | |
11130 | } | |
11131 | } | |
11132 | ||
11133 | if (*p == ')') | |
11134 | { | |
11135 | p++; | |
11136 | ||
11137 | if (*p == ' ') | |
11138 | /* Perfectly formed definition, no complaints. */ | |
11139 | macro_define_function (file, line, name, | |
11140 | argc, (const char **) argv, | |
11141 | p + 1); | |
11142 | else if (*p == '\0') | |
11143 | { | |
11144 | /* Complain, but do define it. */ | |
4d3c2250 | 11145 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11146 | macro_define_function (file, line, name, |
11147 | argc, (const char **) argv, | |
11148 | p); | |
11149 | } | |
11150 | else | |
11151 | /* Just complain. */ | |
4d3c2250 | 11152 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11153 | } |
11154 | else | |
11155 | /* Just complain. */ | |
4d3c2250 | 11156 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11157 | |
11158 | xfree (name); | |
11159 | { | |
11160 | int i; | |
11161 | ||
11162 | for (i = 0; i < argc; i++) | |
11163 | xfree (argv[i]); | |
11164 | } | |
11165 | xfree (argv); | |
11166 | } | |
11167 | else | |
4d3c2250 | 11168 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11169 | } |
11170 | ||
11171 | ||
11172 | static void | |
11173 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
11174 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 11175 | struct dwarf2_cu *cu) |
2e276125 | 11176 | { |
fe1b8b76 | 11177 | gdb_byte *mac_ptr, *mac_end; |
2e276125 | 11178 | struct macro_source_file *current_file = 0; |
757a13d0 JK |
11179 | enum dwarf_macinfo_record_type macinfo_type; |
11180 | int at_commandline; | |
2e276125 | 11181 | |
be391dca TT |
11182 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
11183 | &dwarf2_per_objfile->macinfo); | |
dce234bc | 11184 | if (dwarf2_per_objfile->macinfo.buffer == NULL) |
2e276125 | 11185 | { |
e2e0b3e5 | 11186 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
11187 | return; |
11188 | } | |
11189 | ||
757a13d0 JK |
11190 | /* First pass: Find the name of the base filename. |
11191 | This filename is needed in order to process all macros whose definition | |
11192 | (or undefinition) comes from the command line. These macros are defined | |
11193 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
11194 | associated to the base file. | |
11195 | ||
11196 | To determine the base file name, we scan the macro definitions until we | |
11197 | reach the first DW_MACINFO_start_file entry. We then initialize | |
11198 | CURRENT_FILE accordingly so that any macro definition found before the | |
11199 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
11200 | ||
dce234bc PP |
11201 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
11202 | mac_end = dwarf2_per_objfile->macinfo.buffer | |
11203 | + dwarf2_per_objfile->macinfo.size; | |
2e276125 | 11204 | |
757a13d0 | 11205 | do |
2e276125 | 11206 | { |
2e276125 JB |
11207 | /* Do we at least have room for a macinfo type byte? */ |
11208 | if (mac_ptr >= mac_end) | |
11209 | { | |
757a13d0 JK |
11210 | /* Complaint is printed during the second pass as GDB will probably |
11211 | stop the first pass earlier upon finding DW_MACINFO_start_file. */ | |
11212 | break; | |
2e276125 JB |
11213 | } |
11214 | ||
11215 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
11216 | mac_ptr++; | |
11217 | ||
11218 | switch (macinfo_type) | |
11219 | { | |
11220 | /* A zero macinfo type indicates the end of the macro | |
11221 | information. */ | |
11222 | case 0: | |
757a13d0 JK |
11223 | break; |
11224 | ||
11225 | case DW_MACINFO_define: | |
11226 | case DW_MACINFO_undef: | |
11227 | /* Only skip the data by MAC_PTR. */ | |
11228 | { | |
11229 | unsigned int bytes_read; | |
11230 | ||
11231 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11232 | mac_ptr += bytes_read; | |
11233 | read_string (abfd, mac_ptr, &bytes_read); | |
11234 | mac_ptr += bytes_read; | |
11235 | } | |
11236 | break; | |
11237 | ||
11238 | case DW_MACINFO_start_file: | |
11239 | { | |
11240 | unsigned int bytes_read; | |
11241 | int line, file; | |
11242 | ||
11243 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11244 | mac_ptr += bytes_read; | |
11245 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11246 | mac_ptr += bytes_read; | |
11247 | ||
11248 | current_file = macro_start_file (file, line, current_file, comp_dir, | |
11249 | lh, cu->objfile); | |
11250 | } | |
11251 | break; | |
11252 | ||
11253 | case DW_MACINFO_end_file: | |
11254 | /* No data to skip by MAC_PTR. */ | |
11255 | break; | |
11256 | ||
11257 | case DW_MACINFO_vendor_ext: | |
11258 | /* Only skip the data by MAC_PTR. */ | |
11259 | { | |
11260 | unsigned int bytes_read; | |
11261 | ||
11262 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11263 | mac_ptr += bytes_read; | |
11264 | read_string (abfd, mac_ptr, &bytes_read); | |
11265 | mac_ptr += bytes_read; | |
11266 | } | |
11267 | break; | |
11268 | ||
11269 | default: | |
11270 | break; | |
11271 | } | |
11272 | } while (macinfo_type != 0 && current_file == NULL); | |
11273 | ||
11274 | /* Second pass: Process all entries. | |
11275 | ||
11276 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
11277 | command-line macro definitions/undefinitions. This flag is unset when we | |
11278 | reach the first DW_MACINFO_start_file entry. */ | |
11279 | ||
dce234bc | 11280 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
757a13d0 JK |
11281 | |
11282 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
11283 | GDB is still reading the definitions from command line. First | |
11284 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
11285 | to create CURRENT_FILE for the main source holding also the command line | |
11286 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
11287 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
11288 | ||
11289 | at_commandline = 1; | |
11290 | ||
11291 | do | |
11292 | { | |
11293 | /* Do we at least have room for a macinfo type byte? */ | |
11294 | if (mac_ptr >= mac_end) | |
11295 | { | |
11296 | dwarf2_macros_too_long_complaint (); | |
11297 | break; | |
11298 | } | |
11299 | ||
11300 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
11301 | mac_ptr++; | |
11302 | ||
11303 | switch (macinfo_type) | |
11304 | { | |
11305 | /* A zero macinfo type indicates the end of the macro | |
11306 | information. */ | |
11307 | case 0: | |
11308 | break; | |
2e276125 JB |
11309 | |
11310 | case DW_MACINFO_define: | |
11311 | case DW_MACINFO_undef: | |
11312 | { | |
891d2f0b | 11313 | unsigned int bytes_read; |
2e276125 JB |
11314 | int line; |
11315 | char *body; | |
11316 | ||
11317 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11318 | mac_ptr += bytes_read; | |
11319 | body = read_string (abfd, mac_ptr, &bytes_read); | |
11320 | mac_ptr += bytes_read; | |
11321 | ||
11322 | if (! current_file) | |
757a13d0 JK |
11323 | { |
11324 | /* DWARF violation as no main source is present. */ | |
11325 | complaint (&symfile_complaints, | |
11326 | _("debug info with no main source gives macro %s " | |
11327 | "on line %d: %s"), | |
905e0470 PM |
11328 | macinfo_type == DW_MACINFO_define ? |
11329 | _("definition") : | |
11330 | macinfo_type == DW_MACINFO_undef ? | |
11331 | _("undefinition") : | |
11332 | _("something-or-other"), line, body); | |
757a13d0 JK |
11333 | break; |
11334 | } | |
11335 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) | |
4d3c2250 | 11336 | complaint (&symfile_complaints, |
757a13d0 JK |
11337 | _("debug info gives %s macro %s with %s line %d: %s"), |
11338 | at_commandline ? _("command-line") : _("in-file"), | |
905e0470 PM |
11339 | macinfo_type == DW_MACINFO_define ? |
11340 | _("definition") : | |
11341 | macinfo_type == DW_MACINFO_undef ? | |
11342 | _("undefinition") : | |
11343 | _("something-or-other"), | |
757a13d0 JK |
11344 | line == 0 ? _("zero") : _("non-zero"), line, body); |
11345 | ||
11346 | if (macinfo_type == DW_MACINFO_define) | |
11347 | parse_macro_definition (current_file, line, body); | |
11348 | else if (macinfo_type == DW_MACINFO_undef) | |
11349 | macro_undef (current_file, line, body); | |
2e276125 JB |
11350 | } |
11351 | break; | |
11352 | ||
11353 | case DW_MACINFO_start_file: | |
11354 | { | |
891d2f0b | 11355 | unsigned int bytes_read; |
2e276125 JB |
11356 | int line, file; |
11357 | ||
11358 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11359 | mac_ptr += bytes_read; | |
11360 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11361 | mac_ptr += bytes_read; | |
11362 | ||
757a13d0 JK |
11363 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) |
11364 | complaint (&symfile_complaints, | |
11365 | _("debug info gives source %d included " | |
11366 | "from %s at %s line %d"), | |
11367 | file, at_commandline ? _("command-line") : _("file"), | |
11368 | line == 0 ? _("zero") : _("non-zero"), line); | |
11369 | ||
11370 | if (at_commandline) | |
11371 | { | |
11372 | /* This DW_MACINFO_start_file was executed in the pass one. */ | |
11373 | at_commandline = 0; | |
11374 | } | |
11375 | else | |
11376 | current_file = macro_start_file (file, line, | |
11377 | current_file, comp_dir, | |
11378 | lh, cu->objfile); | |
2e276125 JB |
11379 | } |
11380 | break; | |
11381 | ||
11382 | case DW_MACINFO_end_file: | |
11383 | if (! current_file) | |
4d3c2250 | 11384 | complaint (&symfile_complaints, |
e2e0b3e5 | 11385 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
11386 | else |
11387 | { | |
11388 | current_file = current_file->included_by; | |
11389 | if (! current_file) | |
11390 | { | |
11391 | enum dwarf_macinfo_record_type next_type; | |
11392 | ||
11393 | /* GCC circa March 2002 doesn't produce the zero | |
11394 | type byte marking the end of the compilation | |
11395 | unit. Complain if it's not there, but exit no | |
11396 | matter what. */ | |
11397 | ||
11398 | /* Do we at least have room for a macinfo type byte? */ | |
11399 | if (mac_ptr >= mac_end) | |
11400 | { | |
4d3c2250 | 11401 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
11402 | return; |
11403 | } | |
11404 | ||
11405 | /* We don't increment mac_ptr here, so this is just | |
11406 | a look-ahead. */ | |
11407 | next_type = read_1_byte (abfd, mac_ptr); | |
11408 | if (next_type != 0) | |
4d3c2250 | 11409 | complaint (&symfile_complaints, |
e2e0b3e5 | 11410 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
11411 | |
11412 | return; | |
11413 | } | |
11414 | } | |
11415 | break; | |
11416 | ||
11417 | case DW_MACINFO_vendor_ext: | |
11418 | { | |
891d2f0b | 11419 | unsigned int bytes_read; |
2e276125 JB |
11420 | int constant; |
11421 | char *string; | |
11422 | ||
11423 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11424 | mac_ptr += bytes_read; | |
11425 | string = read_string (abfd, mac_ptr, &bytes_read); | |
11426 | mac_ptr += bytes_read; | |
11427 | ||
11428 | /* We don't recognize any vendor extensions. */ | |
11429 | } | |
11430 | break; | |
11431 | } | |
757a13d0 | 11432 | } while (macinfo_type != 0); |
2e276125 | 11433 | } |
8e19ed76 PS |
11434 | |
11435 | /* Check if the attribute's form is a DW_FORM_block* | |
11436 | if so return true else false. */ | |
11437 | static int | |
11438 | attr_form_is_block (struct attribute *attr) | |
11439 | { | |
11440 | return (attr == NULL ? 0 : | |
11441 | attr->form == DW_FORM_block1 | |
11442 | || attr->form == DW_FORM_block2 | |
11443 | || attr->form == DW_FORM_block4 | |
11444 | || attr->form == DW_FORM_block); | |
11445 | } | |
4c2df51b | 11446 | |
c6a0999f JB |
11447 | /* Return non-zero if ATTR's value is a section offset --- classes |
11448 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
11449 | You may use DW_UNSND (attr) to retrieve such offsets. | |
11450 | ||
11451 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
11452 | may have a value that belongs to more than one of these classes; it | |
11453 | would be ambiguous if we did, because we use the same forms for all | |
11454 | of them. */ | |
3690dd37 JB |
11455 | static int |
11456 | attr_form_is_section_offset (struct attribute *attr) | |
11457 | { | |
11458 | return (attr->form == DW_FORM_data4 | |
11459 | || attr->form == DW_FORM_data8); | |
11460 | } | |
11461 | ||
11462 | ||
11463 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
11464 | zero otherwise. When this function returns true, you can apply | |
11465 | dwarf2_get_attr_constant_value to it. | |
11466 | ||
11467 | However, note that for some attributes you must check | |
11468 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
11469 | and DW_FORM_data8 are members of both the constant class, and of | |
11470 | the classes that contain offsets into other debug sections | |
11471 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
11472 | that, if an attribute's can be either a constant or one of the | |
11473 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
11474 | taken as section offsets, not constants. */ | |
11475 | static int | |
11476 | attr_form_is_constant (struct attribute *attr) | |
11477 | { | |
11478 | switch (attr->form) | |
11479 | { | |
11480 | case DW_FORM_sdata: | |
11481 | case DW_FORM_udata: | |
11482 | case DW_FORM_data1: | |
11483 | case DW_FORM_data2: | |
11484 | case DW_FORM_data4: | |
11485 | case DW_FORM_data8: | |
11486 | return 1; | |
11487 | default: | |
11488 | return 0; | |
11489 | } | |
11490 | } | |
11491 | ||
4c2df51b DJ |
11492 | static void |
11493 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 11494 | struct dwarf2_cu *cu) |
4c2df51b | 11495 | { |
3690dd37 | 11496 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
11497 | /* ".debug_loc" may not exist at all, or the offset may be outside |
11498 | the section. If so, fall through to the complaint in the | |
11499 | other branch. */ | |
dce234bc | 11500 | && DW_UNSND (attr) < dwarf2_per_objfile->loc.size) |
4c2df51b | 11501 | { |
0d53c4c4 | 11502 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 11503 | |
4a146b47 | 11504 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 11505 | sizeof (struct dwarf2_loclist_baton)); |
ae0d2f24 UW |
11506 | baton->per_cu = cu->per_cu; |
11507 | gdb_assert (baton->per_cu); | |
4c2df51b | 11508 | |
be391dca TT |
11509 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
11510 | &dwarf2_per_objfile->loc); | |
11511 | ||
0d53c4c4 DJ |
11512 | /* We don't know how long the location list is, but make sure we |
11513 | don't run off the edge of the section. */ | |
dce234bc PP |
11514 | baton->size = dwarf2_per_objfile->loc.size - DW_UNSND (attr); |
11515 | baton->data = dwarf2_per_objfile->loc.buffer + DW_UNSND (attr); | |
d00adf39 DE |
11516 | baton->base_address = cu->base_address; |
11517 | if (cu->base_known == 0) | |
0d53c4c4 | 11518 | complaint (&symfile_complaints, |
e2e0b3e5 | 11519 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 11520 | |
768a979c | 11521 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
11522 | SYMBOL_LOCATION_BATON (sym) = baton; |
11523 | } | |
11524 | else | |
11525 | { | |
11526 | struct dwarf2_locexpr_baton *baton; | |
11527 | ||
4a146b47 | 11528 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 11529 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
11530 | baton->per_cu = cu->per_cu; |
11531 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
11532 | |
11533 | if (attr_form_is_block (attr)) | |
11534 | { | |
11535 | /* Note that we're just copying the block's data pointer | |
11536 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
11537 | info_buffer for SYM's objfile; right now we never release |
11538 | that buffer, but when we do clean up properly this may | |
11539 | need to change. */ | |
0d53c4c4 DJ |
11540 | baton->size = DW_BLOCK (attr)->size; |
11541 | baton->data = DW_BLOCK (attr)->data; | |
11542 | } | |
11543 | else | |
11544 | { | |
11545 | dwarf2_invalid_attrib_class_complaint ("location description", | |
11546 | SYMBOL_NATURAL_NAME (sym)); | |
11547 | baton->size = 0; | |
11548 | baton->data = NULL; | |
11549 | } | |
11550 | ||
768a979c | 11551 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
11552 | SYMBOL_LOCATION_BATON (sym) = baton; |
11553 | } | |
4c2df51b | 11554 | } |
6502dd73 | 11555 | |
ae0d2f24 UW |
11556 | /* Return the OBJFILE associated with the compilation unit CU. */ |
11557 | ||
11558 | struct objfile * | |
11559 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
11560 | { | |
11561 | struct objfile *objfile = per_cu->psymtab->objfile; | |
11562 | ||
11563 | /* Return the master objfile, so that we can report and look up the | |
11564 | correct file containing this variable. */ | |
11565 | if (objfile->separate_debug_objfile_backlink) | |
11566 | objfile = objfile->separate_debug_objfile_backlink; | |
11567 | ||
11568 | return objfile; | |
11569 | } | |
11570 | ||
11571 | /* Return the address size given in the compilation unit header for CU. */ | |
11572 | ||
11573 | CORE_ADDR | |
11574 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
11575 | { | |
11576 | if (per_cu->cu) | |
11577 | return per_cu->cu->header.addr_size; | |
11578 | else | |
11579 | { | |
11580 | /* If the CU is not currently read in, we re-read its header. */ | |
11581 | struct objfile *objfile = per_cu->psymtab->objfile; | |
11582 | struct dwarf2_per_objfile *per_objfile | |
11583 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
dce234bc | 11584 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; |
ae0d2f24 UW |
11585 | |
11586 | struct comp_unit_head cu_header; | |
11587 | memset (&cu_header, 0, sizeof cu_header); | |
11588 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
11589 | return cu_header.addr_size; | |
11590 | } | |
11591 | } | |
11592 | ||
348e048f DE |
11593 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
11594 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
11595 | |
11596 | static struct dwarf2_per_cu_data * | |
c764a876 | 11597 | dwarf2_find_containing_comp_unit (unsigned int offset, |
ae038cb0 DJ |
11598 | struct objfile *objfile) |
11599 | { | |
11600 | struct dwarf2_per_cu_data *this_cu; | |
11601 | int low, high; | |
11602 | ||
ae038cb0 DJ |
11603 | low = 0; |
11604 | high = dwarf2_per_objfile->n_comp_units - 1; | |
11605 | while (high > low) | |
11606 | { | |
11607 | int mid = low + (high - low) / 2; | |
11608 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) | |
11609 | high = mid; | |
11610 | else | |
11611 | low = mid + 1; | |
11612 | } | |
11613 | gdb_assert (low == high); | |
11614 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
11615 | { | |
10b3939b | 11616 | if (low == 0) |
8a3fe4f8 AC |
11617 | error (_("Dwarf Error: could not find partial DIE containing " |
11618 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
11619 | (long) offset, bfd_get_filename (objfile->obfd)); |
11620 | ||
ae038cb0 DJ |
11621 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
11622 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
11623 | } | |
11624 | else | |
11625 | { | |
11626 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
11627 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
11628 | && offset >= this_cu->offset + this_cu->length) | |
c764a876 | 11629 | error (_("invalid dwarf2 offset %u"), offset); |
ae038cb0 DJ |
11630 | gdb_assert (offset < this_cu->offset + this_cu->length); |
11631 | return this_cu; | |
11632 | } | |
11633 | } | |
11634 | ||
10b3939b DJ |
11635 | /* Locate the compilation unit from OBJFILE which is located at exactly |
11636 | OFFSET. Raises an error on failure. */ | |
11637 | ||
ae038cb0 | 11638 | static struct dwarf2_per_cu_data * |
c764a876 | 11639 | dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile) |
ae038cb0 DJ |
11640 | { |
11641 | struct dwarf2_per_cu_data *this_cu; | |
11642 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
11643 | if (this_cu->offset != offset) | |
c764a876 | 11644 | error (_("no compilation unit with offset %u."), offset); |
ae038cb0 DJ |
11645 | return this_cu; |
11646 | } | |
11647 | ||
93311388 DE |
11648 | /* Malloc space for a dwarf2_cu for OBJFILE and initialize it. */ |
11649 | ||
11650 | static struct dwarf2_cu * | |
11651 | alloc_one_comp_unit (struct objfile *objfile) | |
11652 | { | |
11653 | struct dwarf2_cu *cu = xcalloc (1, sizeof (struct dwarf2_cu)); | |
11654 | cu->objfile = objfile; | |
11655 | obstack_init (&cu->comp_unit_obstack); | |
11656 | return cu; | |
11657 | } | |
11658 | ||
ae038cb0 DJ |
11659 | /* Release one cached compilation unit, CU. We unlink it from the tree |
11660 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
11661 | the caller is responsible for that. |
11662 | NOTE: DATA is a void * because this function is also used as a | |
11663 | cleanup routine. */ | |
ae038cb0 DJ |
11664 | |
11665 | static void | |
11666 | free_one_comp_unit (void *data) | |
11667 | { | |
11668 | struct dwarf2_cu *cu = data; | |
11669 | ||
11670 | if (cu->per_cu != NULL) | |
11671 | cu->per_cu->cu = NULL; | |
11672 | cu->per_cu = NULL; | |
11673 | ||
11674 | obstack_free (&cu->comp_unit_obstack, NULL); | |
11675 | ||
11676 | xfree (cu); | |
11677 | } | |
11678 | ||
72bf9492 | 11679 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
11680 | when we're finished with it. We can't free the pointer itself, but be |
11681 | sure to unlink it from the cache. Also release any associated storage | |
11682 | and perform cache maintenance. | |
72bf9492 DJ |
11683 | |
11684 | Only used during partial symbol parsing. */ | |
11685 | ||
11686 | static void | |
11687 | free_stack_comp_unit (void *data) | |
11688 | { | |
11689 | struct dwarf2_cu *cu = data; | |
11690 | ||
11691 | obstack_free (&cu->comp_unit_obstack, NULL); | |
11692 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
11693 | |
11694 | if (cu->per_cu != NULL) | |
11695 | { | |
11696 | /* This compilation unit is on the stack in our caller, so we | |
11697 | should not xfree it. Just unlink it. */ | |
11698 | cu->per_cu->cu = NULL; | |
11699 | cu->per_cu = NULL; | |
11700 | ||
11701 | /* If we had a per-cu pointer, then we may have other compilation | |
11702 | units loaded, so age them now. */ | |
11703 | age_cached_comp_units (); | |
11704 | } | |
11705 | } | |
11706 | ||
11707 | /* Free all cached compilation units. */ | |
11708 | ||
11709 | static void | |
11710 | free_cached_comp_units (void *data) | |
11711 | { | |
11712 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
11713 | ||
11714 | per_cu = dwarf2_per_objfile->read_in_chain; | |
11715 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
11716 | while (per_cu != NULL) | |
11717 | { | |
11718 | struct dwarf2_per_cu_data *next_cu; | |
11719 | ||
11720 | next_cu = per_cu->cu->read_in_chain; | |
11721 | ||
11722 | free_one_comp_unit (per_cu->cu); | |
11723 | *last_chain = next_cu; | |
11724 | ||
11725 | per_cu = next_cu; | |
11726 | } | |
11727 | } | |
11728 | ||
11729 | /* Increase the age counter on each cached compilation unit, and free | |
11730 | any that are too old. */ | |
11731 | ||
11732 | static void | |
11733 | age_cached_comp_units (void) | |
11734 | { | |
11735 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
11736 | ||
11737 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
11738 | per_cu = dwarf2_per_objfile->read_in_chain; | |
11739 | while (per_cu != NULL) | |
11740 | { | |
11741 | per_cu->cu->last_used ++; | |
11742 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
11743 | dwarf2_mark (per_cu->cu); | |
11744 | per_cu = per_cu->cu->read_in_chain; | |
11745 | } | |
11746 | ||
11747 | per_cu = dwarf2_per_objfile->read_in_chain; | |
11748 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
11749 | while (per_cu != NULL) | |
11750 | { | |
11751 | struct dwarf2_per_cu_data *next_cu; | |
11752 | ||
11753 | next_cu = per_cu->cu->read_in_chain; | |
11754 | ||
11755 | if (!per_cu->cu->mark) | |
11756 | { | |
11757 | free_one_comp_unit (per_cu->cu); | |
11758 | *last_chain = next_cu; | |
11759 | } | |
11760 | else | |
11761 | last_chain = &per_cu->cu->read_in_chain; | |
11762 | ||
11763 | per_cu = next_cu; | |
11764 | } | |
11765 | } | |
11766 | ||
11767 | /* Remove a single compilation unit from the cache. */ | |
11768 | ||
11769 | static void | |
11770 | free_one_cached_comp_unit (void *target_cu) | |
11771 | { | |
11772 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
11773 | ||
11774 | per_cu = dwarf2_per_objfile->read_in_chain; | |
11775 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
11776 | while (per_cu != NULL) | |
11777 | { | |
11778 | struct dwarf2_per_cu_data *next_cu; | |
11779 | ||
11780 | next_cu = per_cu->cu->read_in_chain; | |
11781 | ||
11782 | if (per_cu->cu == target_cu) | |
11783 | { | |
11784 | free_one_comp_unit (per_cu->cu); | |
11785 | *last_chain = next_cu; | |
11786 | break; | |
11787 | } | |
11788 | else | |
11789 | last_chain = &per_cu->cu->read_in_chain; | |
11790 | ||
11791 | per_cu = next_cu; | |
11792 | } | |
11793 | } | |
11794 | ||
fe3e1990 DJ |
11795 | /* Release all extra memory associated with OBJFILE. */ |
11796 | ||
11797 | void | |
11798 | dwarf2_free_objfile (struct objfile *objfile) | |
11799 | { | |
11800 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
11801 | ||
11802 | if (dwarf2_per_objfile == NULL) | |
11803 | return; | |
11804 | ||
11805 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
11806 | free_cached_comp_units (NULL); | |
11807 | ||
11808 | /* Everything else should be on the objfile obstack. */ | |
11809 | } | |
11810 | ||
1c379e20 DJ |
11811 | /* A pair of DIE offset and GDB type pointer. We store these |
11812 | in a hash table separate from the DIEs, and preserve them | |
11813 | when the DIEs are flushed out of cache. */ | |
11814 | ||
11815 | struct dwarf2_offset_and_type | |
11816 | { | |
11817 | unsigned int offset; | |
11818 | struct type *type; | |
11819 | }; | |
11820 | ||
11821 | /* Hash function for a dwarf2_offset_and_type. */ | |
11822 | ||
11823 | static hashval_t | |
11824 | offset_and_type_hash (const void *item) | |
11825 | { | |
11826 | const struct dwarf2_offset_and_type *ofs = item; | |
11827 | return ofs->offset; | |
11828 | } | |
11829 | ||
11830 | /* Equality function for a dwarf2_offset_and_type. */ | |
11831 | ||
11832 | static int | |
11833 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
11834 | { | |
11835 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
11836 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
11837 | return ofs_lhs->offset == ofs_rhs->offset; | |
11838 | } | |
11839 | ||
11840 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
f792889a | 11841 | table if necessary. For convenience, return TYPE. */ |
1c379e20 | 11842 | |
f792889a | 11843 | static struct type * |
1c379e20 DJ |
11844 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
11845 | { | |
11846 | struct dwarf2_offset_and_type **slot, ofs; | |
11847 | ||
b4ba55a1 JB |
11848 | /* For Ada types, make sure that the gnat-specific data is always |
11849 | initialized (if not already set). There are a few types where | |
11850 | we should not be doing so, because the type-specific area is | |
11851 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
11852 | where the type-specific area is used to store the floatformat). | |
11853 | But this is not a problem, because the gnat-specific information | |
11854 | is actually not needed for these types. */ | |
11855 | if (need_gnat_info (cu) | |
11856 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
11857 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
11858 | && !HAVE_GNAT_AUX_INFO (type)) | |
11859 | INIT_GNAT_SPECIFIC (type); | |
11860 | ||
f792889a DJ |
11861 | if (cu->type_hash == NULL) |
11862 | { | |
11863 | gdb_assert (cu->per_cu != NULL); | |
11864 | cu->per_cu->type_hash | |
11865 | = htab_create_alloc_ex (cu->header.length / 24, | |
11866 | offset_and_type_hash, | |
11867 | offset_and_type_eq, | |
11868 | NULL, | |
11869 | &cu->objfile->objfile_obstack, | |
11870 | hashtab_obstack_allocate, | |
11871 | dummy_obstack_deallocate); | |
11872 | cu->type_hash = cu->per_cu->type_hash; | |
11873 | } | |
1c379e20 DJ |
11874 | |
11875 | ofs.offset = die->offset; | |
11876 | ofs.type = type; | |
11877 | slot = (struct dwarf2_offset_and_type **) | |
f792889a | 11878 | htab_find_slot_with_hash (cu->type_hash, &ofs, ofs.offset, INSERT); |
1c379e20 DJ |
11879 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); |
11880 | **slot = ofs; | |
f792889a | 11881 | return type; |
1c379e20 DJ |
11882 | } |
11883 | ||
f792889a DJ |
11884 | /* Find the type for DIE in CU's type_hash, or return NULL if DIE does |
11885 | not have a saved type. */ | |
1c379e20 DJ |
11886 | |
11887 | static struct type * | |
f792889a | 11888 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) |
1c379e20 DJ |
11889 | { |
11890 | struct dwarf2_offset_and_type *slot, ofs; | |
f792889a DJ |
11891 | htab_t type_hash = cu->type_hash; |
11892 | ||
11893 | if (type_hash == NULL) | |
11894 | return NULL; | |
1c379e20 DJ |
11895 | |
11896 | ofs.offset = die->offset; | |
11897 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
11898 | if (slot) | |
11899 | return slot->type; | |
11900 | else | |
11901 | return NULL; | |
11902 | } | |
11903 | ||
10b3939b DJ |
11904 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
11905 | ||
11906 | static void | |
11907 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
11908 | struct dwarf2_per_cu_data *ref_per_cu) | |
11909 | { | |
11910 | void **slot; | |
11911 | ||
11912 | if (cu->dependencies == NULL) | |
11913 | cu->dependencies | |
11914 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
11915 | NULL, &cu->comp_unit_obstack, | |
11916 | hashtab_obstack_allocate, | |
11917 | dummy_obstack_deallocate); | |
11918 | ||
11919 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
11920 | if (*slot == NULL) | |
11921 | *slot = ref_per_cu; | |
11922 | } | |
1c379e20 | 11923 | |
f504f079 DE |
11924 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
11925 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
11926 | cache that we must keep because we are keeping CU. */ |
11927 | ||
10b3939b DJ |
11928 | static int |
11929 | dwarf2_mark_helper (void **slot, void *data) | |
11930 | { | |
11931 | struct dwarf2_per_cu_data *per_cu; | |
11932 | ||
11933 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
11934 | if (per_cu->cu->mark) | |
11935 | return 1; | |
11936 | per_cu->cu->mark = 1; | |
11937 | ||
11938 | if (per_cu->cu->dependencies != NULL) | |
11939 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
11940 | ||
11941 | return 1; | |
11942 | } | |
11943 | ||
f504f079 DE |
11944 | /* Set the mark field in CU and in every other compilation unit in the |
11945 | cache that we must keep because we are keeping CU. */ | |
11946 | ||
ae038cb0 DJ |
11947 | static void |
11948 | dwarf2_mark (struct dwarf2_cu *cu) | |
11949 | { | |
11950 | if (cu->mark) | |
11951 | return; | |
11952 | cu->mark = 1; | |
10b3939b DJ |
11953 | if (cu->dependencies != NULL) |
11954 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
11955 | } |
11956 | ||
11957 | static void | |
11958 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
11959 | { | |
11960 | while (per_cu) | |
11961 | { | |
11962 | per_cu->cu->mark = 0; | |
11963 | per_cu = per_cu->cu->read_in_chain; | |
11964 | } | |
72bf9492 DJ |
11965 | } |
11966 | ||
72bf9492 DJ |
11967 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
11968 | is its offset in .debug_info for this objfile. */ | |
11969 | ||
11970 | static hashval_t | |
11971 | partial_die_hash (const void *item) | |
11972 | { | |
11973 | const struct partial_die_info *part_die = item; | |
11974 | return part_die->offset; | |
11975 | } | |
11976 | ||
11977 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
11978 | are equal if they have the same offset. */ | |
11979 | ||
11980 | static int | |
11981 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
11982 | { | |
11983 | const struct partial_die_info *part_die_lhs = item_lhs; | |
11984 | const struct partial_die_info *part_die_rhs = item_rhs; | |
11985 | return part_die_lhs->offset == part_die_rhs->offset; | |
11986 | } | |
11987 | ||
ae038cb0 DJ |
11988 | static struct cmd_list_element *set_dwarf2_cmdlist; |
11989 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
11990 | ||
11991 | static void | |
11992 | set_dwarf2_cmd (char *args, int from_tty) | |
11993 | { | |
11994 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
11995 | } | |
11996 | ||
11997 | static void | |
11998 | show_dwarf2_cmd (char *args, int from_tty) | |
11999 | { | |
12000 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
12001 | } | |
12002 | ||
dce234bc PP |
12003 | /* If section described by INFO was mmapped, munmap it now. */ |
12004 | ||
12005 | static void | |
12006 | munmap_section_buffer (struct dwarf2_section_info *info) | |
12007 | { | |
12008 | if (info->was_mmapped) | |
12009 | { | |
12010 | #ifdef HAVE_MMAP | |
12011 | intptr_t begin = (intptr_t) info->buffer; | |
12012 | intptr_t map_begin = begin & ~(pagesize - 1); | |
12013 | size_t map_length = info->size + begin - map_begin; | |
12014 | gdb_assert (munmap ((void *) map_begin, map_length) == 0); | |
12015 | #else | |
12016 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
12017 | gdb_assert (0); | |
12018 | #endif | |
12019 | } | |
12020 | } | |
12021 | ||
12022 | /* munmap debug sections for OBJFILE, if necessary. */ | |
12023 | ||
12024 | static void | |
c1bd65d0 | 12025 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
12026 | { |
12027 | struct dwarf2_per_objfile *data = d; | |
12028 | munmap_section_buffer (&data->info); | |
12029 | munmap_section_buffer (&data->abbrev); | |
12030 | munmap_section_buffer (&data->line); | |
12031 | munmap_section_buffer (&data->str); | |
12032 | munmap_section_buffer (&data->macinfo); | |
12033 | munmap_section_buffer (&data->ranges); | |
12034 | munmap_section_buffer (&data->loc); | |
12035 | munmap_section_buffer (&data->frame); | |
12036 | munmap_section_buffer (&data->eh_frame); | |
12037 | } | |
12038 | ||
6502dd73 DJ |
12039 | void _initialize_dwarf2_read (void); |
12040 | ||
12041 | void | |
12042 | _initialize_dwarf2_read (void) | |
12043 | { | |
dce234bc | 12044 | dwarf2_objfile_data_key |
c1bd65d0 | 12045 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 12046 | |
1bedd215 AC |
12047 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
12048 | Set DWARF 2 specific variables.\n\ | |
12049 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
12050 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
12051 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
12052 | ||
1bedd215 AC |
12053 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
12054 | Show DWARF 2 specific variables\n\ | |
12055 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
12056 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
12057 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
12058 | ||
12059 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
12060 | &dwarf2_max_cache_age, _("\ |
12061 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
12062 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
12063 | A higher limit means that cached compilation units will be stored\n\ | |
12064 | in memory longer, and more total memory will be used. Zero disables\n\ | |
12065 | caching, which can slow down startup."), | |
2c5b56ce | 12066 | NULL, |
920d2a44 | 12067 | show_dwarf2_max_cache_age, |
2c5b56ce | 12068 | &set_dwarf2_cmdlist, |
ae038cb0 | 12069 | &show_dwarf2_cmdlist); |
d97bc12b DE |
12070 | |
12071 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ | |
12072 | Set debugging of the dwarf2 DIE reader."), _("\ | |
12073 | Show debugging of the dwarf2 DIE reader."), _("\ | |
12074 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
12075 | The value is the maximum depth to print."), | |
12076 | NULL, | |
12077 | NULL, | |
12078 | &setdebuglist, &showdebuglist); | |
6502dd73 | 12079 | } |