Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
6aba47ca | 3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
4c38e0a4 | 4 | 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
0fb0cc75 | 5 | Free Software Foundation, Inc. |
c906108c SS |
6 | |
7 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
8 | Inc. with support from Florida State University (under contract | |
9 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
10 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
11 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 12 | support. |
c906108c | 13 | |
c5aa993b | 14 | This file is part of GDB. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is free software; you can redistribute it and/or modify |
17 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
18 | the Free Software Foundation; either version 3 of the License, or |
19 | (at your option) any later version. | |
c906108c | 20 | |
a9762ec7 JB |
21 | This program is distributed in the hope that it will be useful, |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
c906108c | 25 | |
c5aa993b | 26 | You should have received a copy of the GNU General Public License |
a9762ec7 | 27 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
28 | |
29 | #include "defs.h" | |
30 | #include "bfd.h" | |
c906108c SS |
31 | #include "symtab.h" |
32 | #include "gdbtypes.h" | |
c906108c | 33 | #include "objfiles.h" |
fa8f86ff | 34 | #include "dwarf2.h" |
c906108c SS |
35 | #include "buildsym.h" |
36 | #include "demangle.h" | |
37 | #include "expression.h" | |
d5166ae1 | 38 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 39 | #include "macrotab.h" |
c906108c SS |
40 | #include "language.h" |
41 | #include "complaints.h" | |
357e46e7 | 42 | #include "bcache.h" |
4c2df51b DJ |
43 | #include "dwarf2expr.h" |
44 | #include "dwarf2loc.h" | |
9219021c | 45 | #include "cp-support.h" |
72bf9492 | 46 | #include "hashtab.h" |
ae038cb0 DJ |
47 | #include "command.h" |
48 | #include "gdbcmd.h" | |
edb3359d | 49 | #include "block.h" |
ff013f42 | 50 | #include "addrmap.h" |
94af9270 KS |
51 | #include "typeprint.h" |
52 | #include "jv-lang.h" | |
ccefe4c4 | 53 | #include "psympriv.h" |
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 | 85 | |
c906108c SS |
86 | /* .debug_line statement program prologue |
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 statement_prologue | |
90 | { | |
91 | unsigned int total_length; /* byte length of the statement | |
92 | information */ | |
93 | unsigned short version; /* version number -- 2 for DWARF | |
94 | version 2 */ | |
95 | unsigned int prologue_length; /* # bytes between prologue & | |
96 | stmt program */ | |
97 | unsigned char minimum_instruction_length; /* byte size of | |
98 | smallest instr */ | |
99 | unsigned char default_is_stmt; /* initial value of is_stmt | |
100 | register */ | |
101 | char line_base; | |
102 | unsigned char line_range; | |
103 | unsigned char opcode_base; /* number assigned to first special | |
104 | opcode */ | |
105 | unsigned char *standard_opcode_lengths; | |
106 | } | |
107 | _STATEMENT_PROLOGUE; | |
108 | ||
d97bc12b DE |
109 | /* When non-zero, dump DIEs after they are read in. */ |
110 | static int dwarf2_die_debug = 0; | |
111 | ||
dce234bc PP |
112 | static int pagesize; |
113 | ||
df8a16a1 DJ |
114 | /* When set, the file that we're processing is known to have debugging |
115 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
116 | but later versions do. */ | |
117 | ||
118 | static int processing_has_namespace_info; | |
119 | ||
6502dd73 DJ |
120 | static const struct objfile_data *dwarf2_objfile_data_key; |
121 | ||
dce234bc PP |
122 | struct dwarf2_section_info |
123 | { | |
124 | asection *asection; | |
125 | gdb_byte *buffer; | |
126 | bfd_size_type size; | |
127 | int was_mmapped; | |
be391dca TT |
128 | /* True if we have tried to read this section. */ |
129 | int readin; | |
dce234bc PP |
130 | }; |
131 | ||
6502dd73 DJ |
132 | struct dwarf2_per_objfile |
133 | { | |
dce234bc PP |
134 | struct dwarf2_section_info info; |
135 | struct dwarf2_section_info abbrev; | |
136 | struct dwarf2_section_info line; | |
dce234bc PP |
137 | struct dwarf2_section_info loc; |
138 | struct dwarf2_section_info macinfo; | |
139 | struct dwarf2_section_info str; | |
140 | struct dwarf2_section_info ranges; | |
348e048f | 141 | struct dwarf2_section_info types; |
dce234bc PP |
142 | struct dwarf2_section_info frame; |
143 | struct dwarf2_section_info eh_frame; | |
ae038cb0 | 144 | |
be391dca TT |
145 | /* Back link. */ |
146 | struct objfile *objfile; | |
147 | ||
10b3939b DJ |
148 | /* A list of all the compilation units. This is used to locate |
149 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
150 | struct dwarf2_per_cu_data **all_comp_units; |
151 | ||
152 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
153 | int n_comp_units; | |
154 | ||
155 | /* A chain of compilation units that are currently read in, so that | |
156 | they can be freed later. */ | |
157 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 158 | |
348e048f DE |
159 | /* A table mapping .debug_types signatures to its signatured_type entry. |
160 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
161 | htab_t signatured_types; | |
162 | ||
72dca2f5 FR |
163 | /* A flag indicating wether this objfile has a section loaded at a |
164 | VMA of 0. */ | |
165 | int has_section_at_zero; | |
6502dd73 DJ |
166 | }; |
167 | ||
168 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c SS |
169 | |
170 | /* names of the debugging sections */ | |
171 | ||
233a11ab CS |
172 | /* Note that if the debugging section has been compressed, it might |
173 | have a name like .zdebug_info. */ | |
174 | ||
175 | #define INFO_SECTION "debug_info" | |
176 | #define ABBREV_SECTION "debug_abbrev" | |
177 | #define LINE_SECTION "debug_line" | |
233a11ab CS |
178 | #define LOC_SECTION "debug_loc" |
179 | #define MACINFO_SECTION "debug_macinfo" | |
180 | #define STR_SECTION "debug_str" | |
181 | #define RANGES_SECTION "debug_ranges" | |
348e048f | 182 | #define TYPES_SECTION "debug_types" |
233a11ab CS |
183 | #define FRAME_SECTION "debug_frame" |
184 | #define EH_FRAME_SECTION "eh_frame" | |
c906108c SS |
185 | |
186 | /* local data types */ | |
187 | ||
57349743 JB |
188 | /* We hold several abbreviation tables in memory at the same time. */ |
189 | #ifndef ABBREV_HASH_SIZE | |
190 | #define ABBREV_HASH_SIZE 121 | |
191 | #endif | |
192 | ||
107d2387 AC |
193 | /* The data in a compilation unit header, after target2host |
194 | translation, looks like this. */ | |
c906108c | 195 | struct comp_unit_head |
a738430d | 196 | { |
c764a876 | 197 | unsigned int length; |
a738430d | 198 | short version; |
a738430d MK |
199 | unsigned char addr_size; |
200 | unsigned char signed_addr_p; | |
9cbfa09e | 201 | unsigned int abbrev_offset; |
57349743 | 202 | |
a738430d MK |
203 | /* Size of file offsets; either 4 or 8. */ |
204 | unsigned int offset_size; | |
57349743 | 205 | |
a738430d MK |
206 | /* Size of the length field; either 4 or 12. */ |
207 | unsigned int initial_length_size; | |
57349743 | 208 | |
a738430d MK |
209 | /* Offset to the first byte of this compilation unit header in the |
210 | .debug_info section, for resolving relative reference dies. */ | |
211 | unsigned int offset; | |
57349743 | 212 | |
d00adf39 DE |
213 | /* Offset to first die in this cu from the start of the cu. |
214 | This will be the first byte following the compilation unit header. */ | |
215 | unsigned int first_die_offset; | |
a738430d | 216 | }; |
c906108c | 217 | |
e7c27a73 DJ |
218 | /* Internal state when decoding a particular compilation unit. */ |
219 | struct dwarf2_cu | |
220 | { | |
221 | /* The objfile containing this compilation unit. */ | |
222 | struct objfile *objfile; | |
223 | ||
d00adf39 | 224 | /* The header of the compilation unit. */ |
e7c27a73 | 225 | struct comp_unit_head header; |
e142c38c | 226 | |
d00adf39 DE |
227 | /* Base address of this compilation unit. */ |
228 | CORE_ADDR base_address; | |
229 | ||
230 | /* Non-zero if base_address has been set. */ | |
231 | int base_known; | |
232 | ||
e142c38c DJ |
233 | struct function_range *first_fn, *last_fn, *cached_fn; |
234 | ||
235 | /* The language we are debugging. */ | |
236 | enum language language; | |
237 | const struct language_defn *language_defn; | |
238 | ||
b0f35d58 DL |
239 | const char *producer; |
240 | ||
e142c38c DJ |
241 | /* The generic symbol table building routines have separate lists for |
242 | file scope symbols and all all other scopes (local scopes). So | |
243 | we need to select the right one to pass to add_symbol_to_list(). | |
244 | We do it by keeping a pointer to the correct list in list_in_scope. | |
245 | ||
246 | FIXME: The original dwarf code just treated the file scope as the | |
247 | first local scope, and all other local scopes as nested local | |
248 | scopes, and worked fine. Check to see if we really need to | |
249 | distinguish these in buildsym.c. */ | |
250 | struct pending **list_in_scope; | |
251 | ||
f3dd6933 DJ |
252 | /* DWARF abbreviation table associated with this compilation unit. */ |
253 | struct abbrev_info **dwarf2_abbrevs; | |
254 | ||
255 | /* Storage for the abbrev table. */ | |
256 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
257 | |
258 | /* Hash table holding all the loaded partial DIEs. */ | |
259 | htab_t partial_dies; | |
260 | ||
261 | /* Storage for things with the same lifetime as this read-in compilation | |
262 | unit, including partial DIEs. */ | |
263 | struct obstack comp_unit_obstack; | |
264 | ||
ae038cb0 DJ |
265 | /* When multiple dwarf2_cu structures are living in memory, this field |
266 | chains them all together, so that they can be released efficiently. | |
267 | We will probably also want a generation counter so that most-recently-used | |
268 | compilation units are cached... */ | |
269 | struct dwarf2_per_cu_data *read_in_chain; | |
270 | ||
271 | /* Backchain to our per_cu entry if the tree has been built. */ | |
272 | struct dwarf2_per_cu_data *per_cu; | |
273 | ||
f792889a DJ |
274 | /* Pointer to the die -> type map. Although it is stored |
275 | permanently in per_cu, we copy it here to avoid double | |
276 | indirection. */ | |
277 | htab_t type_hash; | |
278 | ||
ae038cb0 DJ |
279 | /* How many compilation units ago was this CU last referenced? */ |
280 | int last_used; | |
281 | ||
10b3939b | 282 | /* A hash table of die offsets for following references. */ |
51545339 | 283 | htab_t die_hash; |
10b3939b DJ |
284 | |
285 | /* Full DIEs if read in. */ | |
286 | struct die_info *dies; | |
287 | ||
288 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
289 | units referenced by this one. Only set during full symbol processing; | |
290 | partial symbol tables do not have dependencies. */ | |
291 | htab_t dependencies; | |
292 | ||
cb1df416 DJ |
293 | /* Header data from the line table, during full symbol processing. */ |
294 | struct line_header *line_header; | |
295 | ||
ae038cb0 DJ |
296 | /* Mark used when releasing cached dies. */ |
297 | unsigned int mark : 1; | |
298 | ||
299 | /* This flag will be set if this compilation unit might include | |
300 | inter-compilation-unit references. */ | |
301 | unsigned int has_form_ref_addr : 1; | |
302 | ||
72bf9492 DJ |
303 | /* This flag will be set if this compilation unit includes any |
304 | DW_TAG_namespace DIEs. If we know that there are explicit | |
305 | DIEs for namespaces, we don't need to try to infer them | |
306 | from mangled names. */ | |
307 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
308 | }; |
309 | ||
10b3939b DJ |
310 | /* Persistent data held for a compilation unit, even when not |
311 | processing it. We put a pointer to this structure in the | |
312 | read_symtab_private field of the psymtab. If we encounter | |
313 | inter-compilation-unit references, we also maintain a sorted | |
314 | list of all compilation units. */ | |
315 | ||
ae038cb0 DJ |
316 | struct dwarf2_per_cu_data |
317 | { | |
348e048f | 318 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 319 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
320 | - if it doesn't, GDB will fall over anyway. |
321 | NOTE: Unlike comp_unit_head.length, this length includes | |
322 | initial_length_size. */ | |
c764a876 | 323 | unsigned int offset; |
348e048f | 324 | unsigned int length : 29; |
ae038cb0 DJ |
325 | |
326 | /* Flag indicating this compilation unit will be read in before | |
327 | any of the current compilation units are processed. */ | |
c764a876 | 328 | unsigned int queued : 1; |
ae038cb0 | 329 | |
5afb4e99 DJ |
330 | /* This flag will be set if we need to load absolutely all DIEs |
331 | for this compilation unit, instead of just the ones we think | |
332 | are interesting. It gets set if we look for a DIE in the | |
333 | hash table and don't find it. */ | |
334 | unsigned int load_all_dies : 1; | |
335 | ||
348e048f DE |
336 | /* Non-zero if this CU is from .debug_types. |
337 | Otherwise it's from .debug_info. */ | |
338 | unsigned int from_debug_types : 1; | |
339 | ||
ae038cb0 DJ |
340 | /* Set iff currently read in. */ |
341 | struct dwarf2_cu *cu; | |
1c379e20 DJ |
342 | |
343 | /* If full symbols for this CU have been read in, then this field | |
344 | holds a map of DIE offsets to types. It isn't always possible | |
345 | to reconstruct this information later, so we have to preserve | |
346 | it. */ | |
1c379e20 | 347 | htab_t type_hash; |
10b3939b | 348 | |
31ffec48 DJ |
349 | /* The partial symbol table associated with this compilation unit, |
350 | or NULL for partial units (which do not have an associated | |
351 | symtab). */ | |
10b3939b | 352 | struct partial_symtab *psymtab; |
ae038cb0 DJ |
353 | }; |
354 | ||
348e048f DE |
355 | /* Entry in the signatured_types hash table. */ |
356 | ||
357 | struct signatured_type | |
358 | { | |
359 | ULONGEST signature; | |
360 | ||
361 | /* Offset in .debug_types of the TU (type_unit) for this type. */ | |
362 | unsigned int offset; | |
363 | ||
364 | /* Offset in .debug_types of the type defined by this TU. */ | |
365 | unsigned int type_offset; | |
366 | ||
367 | /* The CU(/TU) of this type. */ | |
368 | struct dwarf2_per_cu_data per_cu; | |
369 | }; | |
370 | ||
93311388 DE |
371 | /* Struct used to pass misc. parameters to read_die_and_children, et. al. |
372 | which are used for both .debug_info and .debug_types dies. | |
373 | All parameters here are unchanging for the life of the call. | |
374 | This struct exists to abstract away the constant parameters of | |
375 | die reading. */ | |
376 | ||
377 | struct die_reader_specs | |
378 | { | |
379 | /* The bfd of this objfile. */ | |
380 | bfd* abfd; | |
381 | ||
382 | /* The CU of the DIE we are parsing. */ | |
383 | struct dwarf2_cu *cu; | |
384 | ||
385 | /* Pointer to start of section buffer. | |
386 | This is either the start of .debug_info or .debug_types. */ | |
387 | const gdb_byte *buffer; | |
388 | }; | |
389 | ||
debd256d JB |
390 | /* The line number information for a compilation unit (found in the |
391 | .debug_line section) begins with a "statement program header", | |
392 | which contains the following information. */ | |
393 | struct line_header | |
394 | { | |
395 | unsigned int total_length; | |
396 | unsigned short version; | |
397 | unsigned int header_length; | |
398 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 399 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
400 | unsigned char default_is_stmt; |
401 | int line_base; | |
402 | unsigned char line_range; | |
403 | unsigned char opcode_base; | |
404 | ||
405 | /* standard_opcode_lengths[i] is the number of operands for the | |
406 | standard opcode whose value is i. This means that | |
407 | standard_opcode_lengths[0] is unused, and the last meaningful | |
408 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
409 | unsigned char *standard_opcode_lengths; | |
410 | ||
411 | /* The include_directories table. NOTE! These strings are not | |
412 | allocated with xmalloc; instead, they are pointers into | |
413 | debug_line_buffer. If you try to free them, `free' will get | |
414 | indigestion. */ | |
415 | unsigned int num_include_dirs, include_dirs_size; | |
416 | char **include_dirs; | |
417 | ||
418 | /* The file_names table. NOTE! These strings are not allocated | |
419 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
420 | Don't try to free them directly. */ | |
421 | unsigned int num_file_names, file_names_size; | |
422 | struct file_entry | |
c906108c | 423 | { |
debd256d JB |
424 | char *name; |
425 | unsigned int dir_index; | |
426 | unsigned int mod_time; | |
427 | unsigned int length; | |
aaa75496 | 428 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 429 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
430 | } *file_names; |
431 | ||
432 | /* The start and end of the statement program following this | |
6502dd73 | 433 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 434 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 435 | }; |
c906108c SS |
436 | |
437 | /* When we construct a partial symbol table entry we only | |
438 | need this much information. */ | |
439 | struct partial_die_info | |
440 | { | |
72bf9492 | 441 | /* Offset of this DIE. */ |
c906108c | 442 | unsigned int offset; |
72bf9492 DJ |
443 | |
444 | /* DWARF-2 tag for this DIE. */ | |
445 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
446 | ||
72bf9492 DJ |
447 | /* Assorted flags describing the data found in this DIE. */ |
448 | unsigned int has_children : 1; | |
449 | unsigned int is_external : 1; | |
450 | unsigned int is_declaration : 1; | |
451 | unsigned int has_type : 1; | |
452 | unsigned int has_specification : 1; | |
453 | unsigned int has_pc_info : 1; | |
454 | ||
455 | /* Flag set if the SCOPE field of this structure has been | |
456 | computed. */ | |
457 | unsigned int scope_set : 1; | |
458 | ||
fa4028e9 JB |
459 | /* Flag set if the DIE has a byte_size attribute. */ |
460 | unsigned int has_byte_size : 1; | |
461 | ||
72bf9492 | 462 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 463 | sometimes a default name for unnamed DIEs. */ |
c906108c | 464 | char *name; |
72bf9492 DJ |
465 | |
466 | /* The scope to prepend to our children. This is generally | |
467 | allocated on the comp_unit_obstack, so will disappear | |
468 | when this compilation unit leaves the cache. */ | |
469 | char *scope; | |
470 | ||
471 | /* The location description associated with this DIE, if any. */ | |
472 | struct dwarf_block *locdesc; | |
473 | ||
474 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
475 | CORE_ADDR lowpc; |
476 | CORE_ADDR highpc; | |
72bf9492 | 477 | |
93311388 | 478 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 479 | DW_AT_sibling, if any. */ |
fe1b8b76 | 480 | gdb_byte *sibling; |
72bf9492 DJ |
481 | |
482 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
483 | DW_AT_specification (or DW_AT_abstract_origin or | |
484 | DW_AT_extension). */ | |
485 | unsigned int spec_offset; | |
486 | ||
487 | /* Pointers to this DIE's parent, first child, and next sibling, | |
488 | if any. */ | |
489 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
490 | }; |
491 | ||
492 | /* This data structure holds the information of an abbrev. */ | |
493 | struct abbrev_info | |
494 | { | |
495 | unsigned int number; /* number identifying abbrev */ | |
496 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
497 | unsigned short has_children; /* boolean */ |
498 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
499 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
500 | struct abbrev_info *next; /* next in chain */ | |
501 | }; | |
502 | ||
503 | struct attr_abbrev | |
504 | { | |
9d25dd43 DE |
505 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
506 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
507 | }; |
508 | ||
b60c80d6 DJ |
509 | /* Attributes have a name and a value */ |
510 | struct attribute | |
511 | { | |
9d25dd43 | 512 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
513 | ENUM_BITFIELD(dwarf_form) form : 15; |
514 | ||
515 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
516 | field should be in u.str (existing only for DW_STRING) but it is kept | |
517 | here for better struct attribute alignment. */ | |
518 | unsigned int string_is_canonical : 1; | |
519 | ||
b60c80d6 DJ |
520 | union |
521 | { | |
522 | char *str; | |
523 | struct dwarf_block *blk; | |
43bbcdc2 PH |
524 | ULONGEST unsnd; |
525 | LONGEST snd; | |
b60c80d6 | 526 | CORE_ADDR addr; |
348e048f | 527 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
528 | } |
529 | u; | |
530 | }; | |
531 | ||
c906108c SS |
532 | /* This data structure holds a complete die structure. */ |
533 | struct die_info | |
534 | { | |
76815b17 DE |
535 | /* DWARF-2 tag for this DIE. */ |
536 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
537 | ||
538 | /* Number of attributes */ | |
539 | unsigned short num_attrs; | |
540 | ||
541 | /* Abbrev number */ | |
542 | unsigned int abbrev; | |
543 | ||
93311388 | 544 | /* Offset in .debug_info or .debug_types section. */ |
76815b17 | 545 | unsigned int offset; |
78ba4af6 JB |
546 | |
547 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
548 | points to this die's parent; CHILD points to the first child of | |
549 | this node; and all the children of a given node are chained | |
550 | together via their SIBLING fields, terminated by a die whose | |
551 | tag is zero. */ | |
639d11d3 DC |
552 | struct die_info *child; /* Its first child, if any. */ |
553 | struct die_info *sibling; /* Its next sibling, if any. */ | |
554 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 555 | |
b60c80d6 DJ |
556 | /* An array of attributes, with NUM_ATTRS elements. There may be |
557 | zero, but it's not common and zero-sized arrays are not | |
558 | sufficiently portable C. */ | |
559 | struct attribute attrs[1]; | |
c906108c SS |
560 | }; |
561 | ||
5fb290d7 DJ |
562 | struct function_range |
563 | { | |
564 | const char *name; | |
565 | CORE_ADDR lowpc, highpc; | |
566 | int seen_line; | |
567 | struct function_range *next; | |
568 | }; | |
569 | ||
c906108c SS |
570 | /* Get at parts of an attribute structure */ |
571 | ||
572 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 573 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
574 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
575 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
576 | #define DW_SND(attr) ((attr)->u.snd) | |
577 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 578 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c SS |
579 | |
580 | /* Blocks are a bunch of untyped bytes. */ | |
581 | struct dwarf_block | |
582 | { | |
583 | unsigned int size; | |
fe1b8b76 | 584 | gdb_byte *data; |
c906108c SS |
585 | }; |
586 | ||
c906108c SS |
587 | #ifndef ATTR_ALLOC_CHUNK |
588 | #define ATTR_ALLOC_CHUNK 4 | |
589 | #endif | |
590 | ||
c906108c SS |
591 | /* Allocate fields for structs, unions and enums in this size. */ |
592 | #ifndef DW_FIELD_ALLOC_CHUNK | |
593 | #define DW_FIELD_ALLOC_CHUNK 4 | |
594 | #endif | |
595 | ||
c906108c SS |
596 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
597 | but this would require a corresponding change in unpack_field_as_long | |
598 | and friends. */ | |
599 | static int bits_per_byte = 8; | |
600 | ||
601 | /* The routines that read and process dies for a C struct or C++ class | |
602 | pass lists of data member fields and lists of member function fields | |
603 | in an instance of a field_info structure, as defined below. */ | |
604 | struct field_info | |
c5aa993b JM |
605 | { |
606 | /* List of data member and baseclasses fields. */ | |
607 | struct nextfield | |
608 | { | |
609 | struct nextfield *next; | |
610 | int accessibility; | |
611 | int virtuality; | |
612 | struct field field; | |
613 | } | |
7d0ccb61 | 614 | *fields, *baseclasses; |
c906108c | 615 | |
7d0ccb61 | 616 | /* Number of fields (including baseclasses). */ |
c5aa993b | 617 | int nfields; |
c906108c | 618 | |
c5aa993b JM |
619 | /* Number of baseclasses. */ |
620 | int nbaseclasses; | |
c906108c | 621 | |
c5aa993b JM |
622 | /* Set if the accesibility of one of the fields is not public. */ |
623 | int non_public_fields; | |
c906108c | 624 | |
c5aa993b JM |
625 | /* Member function fields array, entries are allocated in the order they |
626 | are encountered in the object file. */ | |
627 | struct nextfnfield | |
628 | { | |
629 | struct nextfnfield *next; | |
630 | struct fn_field fnfield; | |
631 | } | |
632 | *fnfields; | |
c906108c | 633 | |
c5aa993b JM |
634 | /* Member function fieldlist array, contains name of possibly overloaded |
635 | member function, number of overloaded member functions and a pointer | |
636 | to the head of the member function field chain. */ | |
637 | struct fnfieldlist | |
638 | { | |
639 | char *name; | |
640 | int length; | |
641 | struct nextfnfield *head; | |
642 | } | |
643 | *fnfieldlists; | |
c906108c | 644 | |
c5aa993b JM |
645 | /* Number of entries in the fnfieldlists array. */ |
646 | int nfnfields; | |
647 | }; | |
c906108c | 648 | |
10b3939b DJ |
649 | /* One item on the queue of compilation units to read in full symbols |
650 | for. */ | |
651 | struct dwarf2_queue_item | |
652 | { | |
653 | struct dwarf2_per_cu_data *per_cu; | |
654 | struct dwarf2_queue_item *next; | |
655 | }; | |
656 | ||
657 | /* The current queue. */ | |
658 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
659 | ||
ae038cb0 DJ |
660 | /* Loaded secondary compilation units are kept in memory until they |
661 | have not been referenced for the processing of this many | |
662 | compilation units. Set this to zero to disable caching. Cache | |
663 | sizes of up to at least twenty will improve startup time for | |
664 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
665 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
666 | static void |
667 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
668 | struct cmd_list_element *c, const char *value) | |
669 | { | |
670 | fprintf_filtered (file, _("\ | |
671 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
672 | value); | |
673 | } | |
674 | ||
ae038cb0 | 675 | |
c906108c SS |
676 | /* Various complaints about symbol reading that don't abort the process */ |
677 | ||
4d3c2250 KB |
678 | static void |
679 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 680 | { |
4d3c2250 | 681 | complaint (&symfile_complaints, |
e2e0b3e5 | 682 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
683 | } |
684 | ||
25e43795 DJ |
685 | static void |
686 | dwarf2_debug_line_missing_file_complaint (void) | |
687 | { | |
688 | complaint (&symfile_complaints, | |
689 | _(".debug_line section has line data without a file")); | |
690 | } | |
691 | ||
59205f5a JB |
692 | static void |
693 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
694 | { | |
695 | complaint (&symfile_complaints, | |
696 | _(".debug_line section has line program sequence without an end")); | |
697 | } | |
698 | ||
4d3c2250 KB |
699 | static void |
700 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 701 | { |
e2e0b3e5 | 702 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
703 | } |
704 | ||
4d3c2250 KB |
705 | static void |
706 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
707 | int arg3) | |
2e276125 | 708 | { |
4d3c2250 | 709 | complaint (&symfile_complaints, |
e2e0b3e5 | 710 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
711 | arg2, arg3); |
712 | } | |
713 | ||
714 | static void | |
715 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 716 | { |
4d3c2250 | 717 | complaint (&symfile_complaints, |
e2e0b3e5 | 718 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
719 | } |
720 | ||
721 | static void | |
722 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 723 | { |
4d3c2250 | 724 | complaint (&symfile_complaints, |
e2e0b3e5 | 725 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
726 | arg1); |
727 | } | |
728 | ||
729 | static void | |
730 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 731 | { |
4d3c2250 | 732 | complaint (&symfile_complaints, |
e2e0b3e5 | 733 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 734 | } |
c906108c | 735 | |
c906108c SS |
736 | /* local function prototypes */ |
737 | ||
4efb68b1 | 738 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 739 | |
aaa75496 JB |
740 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
741 | struct objfile *); | |
742 | ||
743 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
d85a05f0 | 744 | struct die_info *, |
aaa75496 JB |
745 | struct partial_symtab *); |
746 | ||
c67a9c90 | 747 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 748 | |
72bf9492 DJ |
749 | static void scan_partial_symbols (struct partial_die_info *, |
750 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 751 | int, struct dwarf2_cu *); |
c906108c | 752 | |
72bf9492 DJ |
753 | static void add_partial_symbol (struct partial_die_info *, |
754 | struct dwarf2_cu *); | |
63d06c5c | 755 | |
72bf9492 DJ |
756 | static void add_partial_namespace (struct partial_die_info *pdi, |
757 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 758 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 759 | |
5d7cb8df JK |
760 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
761 | CORE_ADDR *highpc, int need_pc, | |
762 | struct dwarf2_cu *cu); | |
763 | ||
72bf9492 DJ |
764 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
765 | struct dwarf2_cu *cu); | |
91c24f0a | 766 | |
bc30ff58 JB |
767 | static void add_partial_subprogram (struct partial_die_info *pdi, |
768 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 769 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 770 | |
fe1b8b76 | 771 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
93311388 DE |
772 | gdb_byte *buffer, gdb_byte *info_ptr, |
773 | bfd *abfd, struct dwarf2_cu *cu); | |
91c24f0a | 774 | |
a14ed312 | 775 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 776 | |
a14ed312 | 777 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 778 | |
e7c27a73 | 779 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 780 | |
f3dd6933 | 781 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 782 | |
fe1b8b76 | 783 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 784 | struct dwarf2_cu *); |
72bf9492 | 785 | |
57349743 | 786 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 787 | struct dwarf2_cu *); |
c906108c | 788 | |
93311388 DE |
789 | static struct partial_die_info *load_partial_dies (bfd *, |
790 | gdb_byte *, gdb_byte *, | |
791 | int, struct dwarf2_cu *); | |
72bf9492 | 792 | |
fe1b8b76 | 793 | static gdb_byte *read_partial_die (struct partial_die_info *, |
93311388 DE |
794 | struct abbrev_info *abbrev, |
795 | unsigned int, bfd *, | |
796 | gdb_byte *, gdb_byte *, | |
797 | struct dwarf2_cu *); | |
c906108c | 798 | |
c764a876 | 799 | static struct partial_die_info *find_partial_die (unsigned int, |
10b3939b | 800 | struct dwarf2_cu *); |
72bf9492 DJ |
801 | |
802 | static void fixup_partial_die (struct partial_die_info *, | |
803 | struct dwarf2_cu *); | |
804 | ||
fe1b8b76 JB |
805 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
806 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 807 | |
fe1b8b76 JB |
808 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
809 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 810 | |
fe1b8b76 | 811 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 812 | |
fe1b8b76 | 813 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 814 | |
fe1b8b76 | 815 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 816 | |
fe1b8b76 | 817 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 818 | |
93311388 | 819 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 820 | |
fe1b8b76 | 821 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 822 | unsigned int *); |
c906108c | 823 | |
c764a876 DE |
824 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
825 | ||
826 | static LONGEST read_checked_initial_length_and_offset | |
827 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
828 | unsigned int *, unsigned int *); | |
613e1657 | 829 | |
fe1b8b76 | 830 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
831 | unsigned int *); |
832 | ||
833 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 834 | |
fe1b8b76 | 835 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 836 | |
fe1b8b76 | 837 | static char *read_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 838 | |
fe1b8b76 JB |
839 | static char *read_indirect_string (bfd *, gdb_byte *, |
840 | const struct comp_unit_head *, | |
841 | unsigned int *); | |
4bdf3d34 | 842 | |
fe1b8b76 | 843 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 844 | |
fe1b8b76 | 845 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 846 | |
fe1b8b76 | 847 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 848 | |
e142c38c | 849 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 850 | |
e142c38c DJ |
851 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
852 | struct dwarf2_cu *); | |
c906108c | 853 | |
348e048f DE |
854 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
855 | unsigned int, | |
856 | struct dwarf2_cu *); | |
857 | ||
05cf31d1 JB |
858 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
859 | struct dwarf2_cu *cu); | |
860 | ||
e142c38c | 861 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 862 | |
e142c38c | 863 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 864 | struct dwarf2_cu **); |
63d06c5c | 865 | |
debd256d JB |
866 | static void free_line_header (struct line_header *lh); |
867 | ||
aaa75496 JB |
868 | static void add_file_name (struct line_header *, char *, unsigned int, |
869 | unsigned int, unsigned int); | |
870 | ||
debd256d JB |
871 | static struct line_header *(dwarf_decode_line_header |
872 | (unsigned int offset, | |
e7c27a73 | 873 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
874 | |
875 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 876 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 877 | |
4f1520fb | 878 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 879 | |
a14ed312 | 880 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 881 | struct dwarf2_cu *); |
c906108c | 882 | |
a14ed312 | 883 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 884 | struct dwarf2_cu *); |
c906108c | 885 | |
2df3850c JM |
886 | static void dwarf2_const_value_data (struct attribute *attr, |
887 | struct symbol *sym, | |
888 | int bits); | |
889 | ||
e7c27a73 | 890 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 891 | |
b4ba55a1 JB |
892 | static int need_gnat_info (struct dwarf2_cu *); |
893 | ||
894 | static struct type *die_descriptive_type (struct die_info *, struct dwarf2_cu *); | |
895 | ||
896 | static void set_descriptive_type (struct type *, struct die_info *, | |
897 | struct dwarf2_cu *); | |
898 | ||
e7c27a73 DJ |
899 | static struct type *die_containing_type (struct die_info *, |
900 | struct dwarf2_cu *); | |
c906108c | 901 | |
e7c27a73 | 902 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 903 | |
f792889a | 904 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 905 | |
086ed43d | 906 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 907 | |
fe1b8b76 JB |
908 | static char *typename_concat (struct obstack *, |
909 | const char *prefix, | |
910 | const char *suffix, | |
987504bb | 911 | struct dwarf2_cu *); |
63d06c5c | 912 | |
e7c27a73 | 913 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 914 | |
348e048f DE |
915 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
916 | ||
e7c27a73 | 917 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 918 | |
e7c27a73 | 919 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 920 | |
ff013f42 JK |
921 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
922 | struct dwarf2_cu *, struct partial_symtab *); | |
923 | ||
a14ed312 | 924 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
925 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
926 | struct partial_symtab *); | |
c906108c | 927 | |
fae299cd DC |
928 | static void get_scope_pc_bounds (struct die_info *, |
929 | CORE_ADDR *, CORE_ADDR *, | |
930 | struct dwarf2_cu *); | |
931 | ||
801e3a5b JB |
932 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
933 | CORE_ADDR, struct dwarf2_cu *); | |
934 | ||
a14ed312 | 935 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 936 | struct dwarf2_cu *); |
c906108c | 937 | |
a14ed312 | 938 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 939 | struct type *, struct dwarf2_cu *); |
c906108c | 940 | |
a14ed312 | 941 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 942 | struct die_info *, struct type *, |
e7c27a73 | 943 | struct dwarf2_cu *); |
c906108c | 944 | |
a14ed312 | 945 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 946 | struct type *, struct dwarf2_cu *); |
c906108c | 947 | |
134d01f1 | 948 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 949 | |
e7c27a73 | 950 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 951 | |
e7c27a73 | 952 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 953 | |
5d7cb8df JK |
954 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
955 | ||
27aa8d6a SW |
956 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
957 | ||
38d518c9 | 958 | static const char *namespace_name (struct die_info *die, |
e142c38c | 959 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 960 | |
134d01f1 | 961 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 962 | |
e7c27a73 | 963 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 964 | |
7ca2d3a3 DL |
965 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
966 | struct dwarf2_cu *); | |
967 | ||
93311388 | 968 | static struct die_info *read_comp_unit (gdb_byte *, struct dwarf2_cu *); |
c906108c | 969 | |
93311388 DE |
970 | static struct die_info *read_die_and_children_1 (const struct die_reader_specs *reader, |
971 | gdb_byte *info_ptr, | |
d97bc12b DE |
972 | gdb_byte **new_info_ptr, |
973 | struct die_info *parent); | |
974 | ||
93311388 DE |
975 | static struct die_info *read_die_and_children (const struct die_reader_specs *reader, |
976 | gdb_byte *info_ptr, | |
fe1b8b76 | 977 | gdb_byte **new_info_ptr, |
639d11d3 DC |
978 | struct die_info *parent); |
979 | ||
93311388 DE |
980 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *reader, |
981 | gdb_byte *info_ptr, | |
fe1b8b76 | 982 | gdb_byte **new_info_ptr, |
639d11d3 DC |
983 | struct die_info *parent); |
984 | ||
93311388 DE |
985 | static gdb_byte *read_full_die (const struct die_reader_specs *reader, |
986 | struct die_info **, gdb_byte *, | |
987 | int *); | |
988 | ||
e7c27a73 | 989 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 990 | |
71c25dea TT |
991 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
992 | struct obstack *); | |
993 | ||
e142c38c | 994 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 995 | |
e142c38c | 996 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 997 | struct dwarf2_cu **); |
9219021c | 998 | |
a14ed312 | 999 | static char *dwarf_tag_name (unsigned int); |
c906108c | 1000 | |
a14ed312 | 1001 | static char *dwarf_attr_name (unsigned int); |
c906108c | 1002 | |
a14ed312 | 1003 | static char *dwarf_form_name (unsigned int); |
c906108c | 1004 | |
a14ed312 | 1005 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 1006 | |
a14ed312 | 1007 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1008 | |
a14ed312 | 1009 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
1010 | |
1011 | #if 0 | |
a14ed312 | 1012 | static char *dwarf_cfi_name (unsigned int); |
c906108c SS |
1013 | #endif |
1014 | ||
f9aca02d | 1015 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1016 | |
d97bc12b DE |
1017 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1018 | ||
1019 | static void dump_die_for_error (struct die_info *); | |
1020 | ||
1021 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1022 | struct die_info *); | |
c906108c | 1023 | |
d97bc12b | 1024 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1025 | |
51545339 | 1026 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1027 | struct dwarf2_cu *); |
c906108c | 1028 | |
93311388 DE |
1029 | static int is_ref_attr (struct attribute *); |
1030 | ||
c764a876 | 1031 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1032 | |
43bbcdc2 | 1033 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1034 | |
348e048f DE |
1035 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1036 | struct attribute *, | |
1037 | struct dwarf2_cu **); | |
1038 | ||
10b3939b DJ |
1039 | static struct die_info *follow_die_ref (struct die_info *, |
1040 | struct attribute *, | |
f2f0e013 | 1041 | struct dwarf2_cu **); |
c906108c | 1042 | |
348e048f DE |
1043 | static struct die_info *follow_die_sig (struct die_info *, |
1044 | struct attribute *, | |
1045 | struct dwarf2_cu **); | |
1046 | ||
1047 | static void read_signatured_type_at_offset (struct objfile *objfile, | |
1048 | unsigned int offset); | |
1049 | ||
1050 | static void read_signatured_type (struct objfile *, | |
1051 | struct signatured_type *type_sig); | |
1052 | ||
c906108c SS |
1053 | /* memory allocation interface */ |
1054 | ||
7b5a2f43 | 1055 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1056 | |
f3dd6933 | 1057 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1058 | |
b60c80d6 | 1059 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1060 | |
e142c38c | 1061 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1062 | |
e142c38c DJ |
1063 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1064 | struct dwarf2_cu *); | |
5fb290d7 | 1065 | |
2e276125 | 1066 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1067 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1068 | |
8e19ed76 PS |
1069 | static int attr_form_is_block (struct attribute *); |
1070 | ||
3690dd37 JB |
1071 | static int attr_form_is_section_offset (struct attribute *); |
1072 | ||
1073 | static int attr_form_is_constant (struct attribute *); | |
1074 | ||
93e7bd98 DJ |
1075 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1076 | struct symbol *sym, | |
1077 | struct dwarf2_cu *cu); | |
4c2df51b | 1078 | |
93311388 DE |
1079 | static gdb_byte *skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
1080 | struct abbrev_info *abbrev, | |
1081 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1082 | |
72bf9492 DJ |
1083 | static void free_stack_comp_unit (void *); |
1084 | ||
72bf9492 DJ |
1085 | static hashval_t partial_die_hash (const void *item); |
1086 | ||
1087 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1088 | ||
ae038cb0 | 1089 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
c764a876 | 1090 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 DJ |
1091 | |
1092 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
c764a876 | 1093 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 | 1094 | |
93311388 DE |
1095 | static struct dwarf2_cu *alloc_one_comp_unit (struct objfile *objfile); |
1096 | ||
ae038cb0 DJ |
1097 | static void free_one_comp_unit (void *); |
1098 | ||
1099 | static void free_cached_comp_units (void *); | |
1100 | ||
1101 | static void age_cached_comp_units (void); | |
1102 | ||
1103 | static void free_one_cached_comp_unit (void *); | |
1104 | ||
f792889a DJ |
1105 | static struct type *set_die_type (struct die_info *, struct type *, |
1106 | struct dwarf2_cu *); | |
1c379e20 | 1107 | |
ae038cb0 DJ |
1108 | static void create_all_comp_units (struct objfile *); |
1109 | ||
93311388 DE |
1110 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1111 | struct objfile *); | |
10b3939b DJ |
1112 | |
1113 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1114 | ||
1115 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1116 | struct dwarf2_per_cu_data *); | |
1117 | ||
ae038cb0 DJ |
1118 | static void dwarf2_mark (struct dwarf2_cu *); |
1119 | ||
1120 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1121 | ||
f792889a | 1122 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1123 | |
c906108c SS |
1124 | /* Try to locate the sections we need for DWARF 2 debugging |
1125 | information and return true if we have enough to do something. */ | |
1126 | ||
1127 | int | |
6502dd73 | 1128 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1129 | { |
be391dca TT |
1130 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1131 | if (!dwarf2_per_objfile) | |
1132 | { | |
1133 | /* Initialize per-objfile state. */ | |
1134 | struct dwarf2_per_objfile *data | |
1135 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1136 | |
be391dca TT |
1137 | memset (data, 0, sizeof (*data)); |
1138 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1139 | dwarf2_per_objfile = data; | |
6502dd73 | 1140 | |
be391dca TT |
1141 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
1142 | dwarf2_per_objfile->objfile = objfile; | |
1143 | } | |
1144 | return (dwarf2_per_objfile->info.asection != NULL | |
1145 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1146 | } |
1147 | ||
233a11ab CS |
1148 | /* When loading sections, we can either look for ".<name>", or for |
1149 | * ".z<name>", which indicates a compressed section. */ | |
1150 | ||
1151 | static int | |
dce234bc | 1152 | section_is_p (const char *section_name, const char *name) |
233a11ab | 1153 | { |
dce234bc PP |
1154 | return (section_name[0] == '.' |
1155 | && (strcmp (section_name + 1, name) == 0 | |
1156 | || (section_name[1] == 'z' | |
1157 | && strcmp (section_name + 2, name) == 0))); | |
233a11ab CS |
1158 | } |
1159 | ||
c906108c SS |
1160 | /* This function is mapped across the sections and remembers the |
1161 | offset and size of each of the debugging sections we are interested | |
1162 | in. */ | |
1163 | ||
1164 | static void | |
72dca2f5 | 1165 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1166 | { |
dce234bc | 1167 | if (section_is_p (sectp->name, INFO_SECTION)) |
c906108c | 1168 | { |
dce234bc PP |
1169 | dwarf2_per_objfile->info.asection = sectp; |
1170 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1171 | } |
dce234bc | 1172 | else if (section_is_p (sectp->name, ABBREV_SECTION)) |
c906108c | 1173 | { |
dce234bc PP |
1174 | dwarf2_per_objfile->abbrev.asection = sectp; |
1175 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1176 | } |
dce234bc | 1177 | else if (section_is_p (sectp->name, LINE_SECTION)) |
c906108c | 1178 | { |
dce234bc PP |
1179 | dwarf2_per_objfile->line.asection = sectp; |
1180 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1181 | } |
dce234bc | 1182 | else if (section_is_p (sectp->name, LOC_SECTION)) |
c906108c | 1183 | { |
dce234bc PP |
1184 | dwarf2_per_objfile->loc.asection = sectp; |
1185 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1186 | } |
dce234bc | 1187 | else if (section_is_p (sectp->name, MACINFO_SECTION)) |
c906108c | 1188 | { |
dce234bc PP |
1189 | dwarf2_per_objfile->macinfo.asection = sectp; |
1190 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1191 | } |
dce234bc | 1192 | else if (section_is_p (sectp->name, STR_SECTION)) |
c906108c | 1193 | { |
dce234bc PP |
1194 | dwarf2_per_objfile->str.asection = sectp; |
1195 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1196 | } |
dce234bc | 1197 | else if (section_is_p (sectp->name, FRAME_SECTION)) |
b6af0555 | 1198 | { |
dce234bc PP |
1199 | dwarf2_per_objfile->frame.asection = sectp; |
1200 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1201 | } |
dce234bc | 1202 | else if (section_is_p (sectp->name, EH_FRAME_SECTION)) |
b6af0555 | 1203 | { |
3799ccc6 | 1204 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
9a619af0 | 1205 | |
3799ccc6 EZ |
1206 | if (aflag & SEC_HAS_CONTENTS) |
1207 | { | |
dce234bc PP |
1208 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1209 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1210 | } |
b6af0555 | 1211 | } |
dce234bc | 1212 | else if (section_is_p (sectp->name, RANGES_SECTION)) |
af34e669 | 1213 | { |
dce234bc PP |
1214 | dwarf2_per_objfile->ranges.asection = sectp; |
1215 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1216 | } |
348e048f DE |
1217 | else if (section_is_p (sectp->name, TYPES_SECTION)) |
1218 | { | |
1219 | dwarf2_per_objfile->types.asection = sectp; | |
1220 | dwarf2_per_objfile->types.size = bfd_get_section_size (sectp); | |
1221 | } | |
dce234bc | 1222 | |
72dca2f5 FR |
1223 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1224 | && bfd_section_vma (abfd, sectp) == 0) | |
1225 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1226 | } |
1227 | ||
dce234bc PP |
1228 | /* Decompress a section that was compressed using zlib. Store the |
1229 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1230 | |
1231 | static void | |
dce234bc PP |
1232 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1233 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1234 | { | |
1235 | bfd *abfd = objfile->obfd; | |
1236 | #ifndef HAVE_ZLIB_H | |
1237 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1238 | "is disabled in this copy of GDB"), | |
1239 | bfd_get_filename (abfd)); | |
1240 | #else | |
1241 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1242 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1243 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1244 | bfd_size_type uncompressed_size; |
1245 | gdb_byte *uncompressed_buffer; | |
1246 | z_stream strm; | |
1247 | int rc; | |
1248 | int header_size = 12; | |
1249 | ||
1250 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1251 | || bfd_bread (compressed_buffer, compressed_size, abfd) != compressed_size) | |
1252 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1253 | bfd_get_filename (abfd)); | |
1254 | ||
1255 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1256 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1257 | if (compressed_size < header_size | |
1258 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1259 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1260 | bfd_get_filename (abfd)); | |
1261 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1262 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1263 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1264 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1265 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1266 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1267 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1268 | uncompressed_size += compressed_buffer[11]; | |
1269 | ||
1270 | /* It is possible the section consists of several compressed | |
1271 | buffers concatenated together, so we uncompress in a loop. */ | |
1272 | strm.zalloc = NULL; | |
1273 | strm.zfree = NULL; | |
1274 | strm.opaque = NULL; | |
1275 | strm.avail_in = compressed_size - header_size; | |
1276 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1277 | strm.avail_out = uncompressed_size; | |
1278 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1279 | uncompressed_size); | |
1280 | rc = inflateInit (&strm); | |
1281 | while (strm.avail_in > 0) | |
1282 | { | |
1283 | if (rc != Z_OK) | |
1284 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1285 | bfd_get_filename (abfd), rc); | |
1286 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1287 | + (uncompressed_size - strm.avail_out)); | |
1288 | rc = inflate (&strm, Z_FINISH); | |
1289 | if (rc != Z_STREAM_END) | |
1290 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1291 | bfd_get_filename (abfd), rc); | |
1292 | rc = inflateReset (&strm); | |
1293 | } | |
1294 | rc = inflateEnd (&strm); | |
1295 | if (rc != Z_OK | |
1296 | || strm.avail_out != 0) | |
1297 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1298 | bfd_get_filename (abfd), rc); | |
1299 | ||
affddf13 | 1300 | do_cleanups (cleanup); |
dce234bc PP |
1301 | *outbuf = uncompressed_buffer; |
1302 | *outsize = uncompressed_size; | |
1303 | #endif | |
233a11ab CS |
1304 | } |
1305 | ||
dce234bc PP |
1306 | /* Read the contents of the section SECTP from object file specified by |
1307 | OBJFILE, store info about the section into INFO. | |
1308 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 1309 | |
dce234bc PP |
1310 | static void |
1311 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1312 | { |
dce234bc PP |
1313 | bfd *abfd = objfile->obfd; |
1314 | asection *sectp = info->asection; | |
1315 | gdb_byte *buf, *retbuf; | |
1316 | unsigned char header[4]; | |
c906108c | 1317 | |
be391dca TT |
1318 | if (info->readin) |
1319 | return; | |
dce234bc PP |
1320 | info->buffer = NULL; |
1321 | info->was_mmapped = 0; | |
be391dca | 1322 | info->readin = 1; |
188dd5d6 | 1323 | |
dce234bc PP |
1324 | if (info->asection == NULL || info->size == 0) |
1325 | return; | |
c906108c | 1326 | |
dce234bc PP |
1327 | /* Check if the file has a 4-byte header indicating compression. */ |
1328 | if (info->size > sizeof (header) | |
1329 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1330 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1331 | { | |
1332 | /* Upon decompression, update the buffer and its size. */ | |
1333 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1334 | { | |
1335 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1336 | &info->size); | |
1337 | return; | |
1338 | } | |
1339 | } | |
4bdf3d34 | 1340 | |
dce234bc PP |
1341 | #ifdef HAVE_MMAP |
1342 | if (pagesize == 0) | |
1343 | pagesize = getpagesize (); | |
2e276125 | 1344 | |
dce234bc PP |
1345 | /* Only try to mmap sections which are large enough: we don't want to |
1346 | waste space due to fragmentation. Also, only try mmap for sections | |
1347 | without relocations. */ | |
1348 | ||
1349 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1350 | { | |
1351 | off_t pg_offset = sectp->filepos & ~(pagesize - 1); | |
1352 | size_t map_length = info->size + sectp->filepos - pg_offset; | |
1353 | caddr_t retbuf = bfd_mmap (abfd, 0, map_length, PROT_READ, | |
1354 | MAP_PRIVATE, pg_offset); | |
1355 | ||
1356 | if (retbuf != MAP_FAILED) | |
1357 | { | |
1358 | info->was_mmapped = 1; | |
1359 | info->buffer = retbuf + (sectp->filepos & (pagesize - 1)) ; | |
be391dca TT |
1360 | #if HAVE_POSIX_MADVISE |
1361 | posix_madvise (retbuf, map_length, POSIX_MADV_WILLNEED); | |
1362 | #endif | |
dce234bc PP |
1363 | return; |
1364 | } | |
1365 | } | |
1366 | #endif | |
1367 | ||
1368 | /* If we get here, we are a normal, not-compressed section. */ | |
1369 | info->buffer = buf | |
1370 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1371 | ||
1372 | /* When debugging .o files, we may need to apply relocations; see | |
1373 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1374 | We never compress sections in .o files, so we only need to | |
1375 | try this when the section is not compressed. */ | |
ac8035ab | 1376 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1377 | if (retbuf != NULL) |
1378 | { | |
1379 | info->buffer = retbuf; | |
1380 | return; | |
1381 | } | |
1382 | ||
1383 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1384 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1385 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1386 | bfd_get_filename (abfd)); | |
1387 | } | |
1388 | ||
1389 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and | |
1390 | SECTION_NAME. */ | |
af34e669 | 1391 | |
dce234bc PP |
1392 | void |
1393 | dwarf2_get_section_info (struct objfile *objfile, const char *section_name, | |
1394 | asection **sectp, gdb_byte **bufp, | |
1395 | bfd_size_type *sizep) | |
1396 | { | |
1397 | struct dwarf2_per_objfile *data | |
1398 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1399 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1400 | |
1401 | /* We may see an objfile without any DWARF, in which case we just | |
1402 | return nothing. */ | |
1403 | if (data == NULL) | |
1404 | { | |
1405 | *sectp = NULL; | |
1406 | *bufp = NULL; | |
1407 | *sizep = 0; | |
1408 | return; | |
1409 | } | |
dce234bc PP |
1410 | if (section_is_p (section_name, EH_FRAME_SECTION)) |
1411 | info = &data->eh_frame; | |
1412 | else if (section_is_p (section_name, FRAME_SECTION)) | |
1413 | info = &data->frame; | |
0d53c4c4 | 1414 | else |
dce234bc PP |
1415 | gdb_assert (0); |
1416 | ||
1417 | if (info->asection != NULL && info->size != 0 && info->buffer == NULL) | |
1418 | /* We haven't read this section in yet. Do it now. */ | |
1419 | dwarf2_read_section (objfile, info); | |
1420 | ||
1421 | *sectp = info->asection; | |
1422 | *bufp = info->buffer; | |
1423 | *sizep = info->size; | |
1424 | } | |
1425 | ||
1426 | /* Build a partial symbol table. */ | |
1427 | ||
1428 | void | |
f29dff0a | 1429 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 1430 | { |
f29dff0a | 1431 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
1432 | { |
1433 | init_psymbol_list (objfile, 1024); | |
1434 | } | |
1435 | ||
d146bf1e | 1436 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 1437 | } |
c906108c | 1438 | |
45452591 DE |
1439 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
1440 | ||
1441 | static inline int | |
1442 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
1443 | { | |
1444 | unsigned int bottom = cu_header->offset; | |
1445 | unsigned int top = (cu_header->offset | |
1446 | + cu_header->length | |
1447 | + cu_header->initial_length_size); | |
9a619af0 | 1448 | |
45452591 DE |
1449 | return (offset >= bottom && offset < top); |
1450 | } | |
1451 | ||
93311388 DE |
1452 | /* Read in the comp unit header information from the debug_info at info_ptr. |
1453 | NOTE: This leaves members offset, first_die_offset to be filled in | |
1454 | by the caller. */ | |
107d2387 | 1455 | |
fe1b8b76 | 1456 | static gdb_byte * |
107d2387 | 1457 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 1458 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
1459 | { |
1460 | int signed_addr; | |
891d2f0b | 1461 | unsigned int bytes_read; |
c764a876 DE |
1462 | |
1463 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
1464 | cu_header->initial_length_size = bytes_read; | |
1465 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 1466 | info_ptr += bytes_read; |
107d2387 AC |
1467 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1468 | info_ptr += 2; | |
613e1657 | 1469 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
c764a876 | 1470 | &bytes_read); |
613e1657 | 1471 | info_ptr += bytes_read; |
107d2387 AC |
1472 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1473 | info_ptr += 1; | |
1474 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1475 | if (signed_addr < 0) | |
8e65ff28 | 1476 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1477 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 1478 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 1479 | |
107d2387 AC |
1480 | return info_ptr; |
1481 | } | |
1482 | ||
fe1b8b76 JB |
1483 | static gdb_byte * |
1484 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
93311388 | 1485 | gdb_byte *buffer, unsigned int buffer_size, |
72bf9492 DJ |
1486 | bfd *abfd) |
1487 | { | |
fe1b8b76 | 1488 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
1489 | |
1490 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1491 | ||
2dc7f7b3 | 1492 | if (header->version != 2 && header->version != 3 && header->version != 4) |
8a3fe4f8 | 1493 | error (_("Dwarf Error: wrong version in compilation unit header " |
2dc7f7b3 TT |
1494 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, |
1495 | bfd_get_filename (abfd)); | |
72bf9492 | 1496 | |
dce234bc | 1497 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev.size) |
8a3fe4f8 AC |
1498 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
1499 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 | 1500 | (long) header->abbrev_offset, |
93311388 | 1501 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
1502 | bfd_get_filename (abfd)); |
1503 | ||
1504 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
93311388 | 1505 | > buffer + buffer_size) |
8a3fe4f8 AC |
1506 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
1507 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 | 1508 | (long) header->length, |
93311388 | 1509 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
1510 | bfd_get_filename (abfd)); |
1511 | ||
1512 | return info_ptr; | |
1513 | } | |
1514 | ||
348e048f DE |
1515 | /* Read in the types comp unit header information from .debug_types entry at |
1516 | types_ptr. The result is a pointer to one past the end of the header. */ | |
1517 | ||
1518 | static gdb_byte * | |
1519 | read_type_comp_unit_head (struct comp_unit_head *cu_header, | |
1520 | ULONGEST *signature, | |
1521 | gdb_byte *types_ptr, bfd *abfd) | |
1522 | { | |
348e048f DE |
1523 | gdb_byte *initial_types_ptr = types_ptr; |
1524 | ||
fa238c03 MS |
1525 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
1526 | &dwarf2_per_objfile->types); | |
348e048f DE |
1527 | cu_header->offset = types_ptr - dwarf2_per_objfile->types.buffer; |
1528 | ||
1529 | types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd); | |
1530 | ||
1531 | *signature = read_8_bytes (abfd, types_ptr); | |
1532 | types_ptr += 8; | |
1533 | types_ptr += cu_header->offset_size; | |
1534 | cu_header->first_die_offset = types_ptr - initial_types_ptr; | |
1535 | ||
1536 | return types_ptr; | |
1537 | } | |
1538 | ||
aaa75496 JB |
1539 | /* Allocate a new partial symtab for file named NAME and mark this new |
1540 | partial symtab as being an include of PST. */ | |
1541 | ||
1542 | static void | |
1543 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1544 | struct objfile *objfile) | |
1545 | { | |
1546 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1547 | ||
1548 | subpst->section_offsets = pst->section_offsets; | |
1549 | subpst->textlow = 0; | |
1550 | subpst->texthigh = 0; | |
1551 | ||
1552 | subpst->dependencies = (struct partial_symtab **) | |
1553 | obstack_alloc (&objfile->objfile_obstack, | |
1554 | sizeof (struct partial_symtab *)); | |
1555 | subpst->dependencies[0] = pst; | |
1556 | subpst->number_of_dependencies = 1; | |
1557 | ||
1558 | subpst->globals_offset = 0; | |
1559 | subpst->n_global_syms = 0; | |
1560 | subpst->statics_offset = 0; | |
1561 | subpst->n_static_syms = 0; | |
1562 | subpst->symtab = NULL; | |
1563 | subpst->read_symtab = pst->read_symtab; | |
1564 | subpst->readin = 0; | |
1565 | ||
1566 | /* No private part is necessary for include psymtabs. This property | |
1567 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1568 | the regular ones. */ |
58a9656e | 1569 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1570 | } |
1571 | ||
1572 | /* Read the Line Number Program data and extract the list of files | |
1573 | included by the source file represented by PST. Build an include | |
d85a05f0 | 1574 | partial symtab for each of these included files. */ |
aaa75496 JB |
1575 | |
1576 | static void | |
1577 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
d85a05f0 | 1578 | struct die_info *die, |
aaa75496 JB |
1579 | struct partial_symtab *pst) |
1580 | { | |
1581 | struct objfile *objfile = cu->objfile; | |
1582 | bfd *abfd = objfile->obfd; | |
d85a05f0 DJ |
1583 | struct line_header *lh = NULL; |
1584 | struct attribute *attr; | |
aaa75496 | 1585 | |
d85a05f0 DJ |
1586 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
1587 | if (attr) | |
1588 | { | |
1589 | unsigned int line_offset = DW_UNSND (attr); | |
9a619af0 | 1590 | |
d85a05f0 DJ |
1591 | lh = dwarf_decode_line_header (line_offset, abfd, cu); |
1592 | } | |
aaa75496 JB |
1593 | if (lh == NULL) |
1594 | return; /* No linetable, so no includes. */ | |
1595 | ||
1596 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1597 | ||
1598 | free_line_header (lh); | |
1599 | } | |
1600 | ||
348e048f DE |
1601 | static hashval_t |
1602 | hash_type_signature (const void *item) | |
1603 | { | |
1604 | const struct signatured_type *type_sig = item; | |
9a619af0 | 1605 | |
348e048f DE |
1606 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
1607 | return type_sig->signature; | |
1608 | } | |
1609 | ||
1610 | static int | |
1611 | eq_type_signature (const void *item_lhs, const void *item_rhs) | |
1612 | { | |
1613 | const struct signatured_type *lhs = item_lhs; | |
1614 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 1615 | |
348e048f DE |
1616 | return lhs->signature == rhs->signature; |
1617 | } | |
1618 | ||
1619 | /* Create the hash table of all entries in the .debug_types section. | |
1620 | The result is zero if there is an error (e.g. missing .debug_types section), | |
1621 | otherwise non-zero. */ | |
1622 | ||
1623 | static int | |
1624 | create_debug_types_hash_table (struct objfile *objfile) | |
1625 | { | |
be391dca | 1626 | gdb_byte *info_ptr; |
348e048f DE |
1627 | htab_t types_htab; |
1628 | ||
be391dca TT |
1629 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
1630 | info_ptr = dwarf2_per_objfile->types.buffer; | |
1631 | ||
348e048f DE |
1632 | if (info_ptr == NULL) |
1633 | { | |
1634 | dwarf2_per_objfile->signatured_types = NULL; | |
1635 | return 0; | |
1636 | } | |
1637 | ||
1638 | types_htab = htab_create_alloc_ex (41, | |
1639 | hash_type_signature, | |
1640 | eq_type_signature, | |
1641 | NULL, | |
1642 | &objfile->objfile_obstack, | |
1643 | hashtab_obstack_allocate, | |
1644 | dummy_obstack_deallocate); | |
1645 | ||
1646 | if (dwarf2_die_debug) | |
1647 | fprintf_unfiltered (gdb_stdlog, "Signatured types:\n"); | |
1648 | ||
1649 | while (info_ptr < dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
1650 | { | |
1651 | unsigned int offset; | |
1652 | unsigned int offset_size; | |
1653 | unsigned int type_offset; | |
1654 | unsigned int length, initial_length_size; | |
1655 | unsigned short version; | |
1656 | ULONGEST signature; | |
1657 | struct signatured_type *type_sig; | |
1658 | void **slot; | |
1659 | gdb_byte *ptr = info_ptr; | |
1660 | ||
1661 | offset = ptr - dwarf2_per_objfile->types.buffer; | |
1662 | ||
1663 | /* We need to read the type's signature in order to build the hash | |
1664 | table, but we don't need to read anything else just yet. */ | |
1665 | ||
1666 | /* Sanity check to ensure entire cu is present. */ | |
1667 | length = read_initial_length (objfile->obfd, ptr, &initial_length_size); | |
1668 | if (ptr + length + initial_length_size | |
1669 | > dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
1670 | { | |
1671 | complaint (&symfile_complaints, | |
1672 | _("debug type entry runs off end of `.debug_types' section, ignored")); | |
1673 | break; | |
1674 | } | |
1675 | ||
1676 | offset_size = initial_length_size == 4 ? 4 : 8; | |
1677 | ptr += initial_length_size; | |
1678 | version = bfd_get_16 (objfile->obfd, ptr); | |
1679 | ptr += 2; | |
1680 | ptr += offset_size; /* abbrev offset */ | |
1681 | ptr += 1; /* address size */ | |
1682 | signature = bfd_get_64 (objfile->obfd, ptr); | |
1683 | ptr += 8; | |
1684 | type_offset = read_offset_1 (objfile->obfd, ptr, offset_size); | |
1685 | ||
1686 | type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig)); | |
1687 | memset (type_sig, 0, sizeof (*type_sig)); | |
1688 | type_sig->signature = signature; | |
1689 | type_sig->offset = offset; | |
1690 | type_sig->type_offset = type_offset; | |
1691 | ||
1692 | slot = htab_find_slot (types_htab, type_sig, INSERT); | |
1693 | gdb_assert (slot != NULL); | |
1694 | *slot = type_sig; | |
1695 | ||
1696 | if (dwarf2_die_debug) | |
1697 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
1698 | offset, phex (signature, sizeof (signature))); | |
1699 | ||
1700 | info_ptr = info_ptr + initial_length_size + length; | |
1701 | } | |
1702 | ||
1703 | dwarf2_per_objfile->signatured_types = types_htab; | |
1704 | ||
1705 | return 1; | |
1706 | } | |
1707 | ||
1708 | /* Lookup a signature based type. | |
1709 | Returns NULL if SIG is not present in the table. */ | |
1710 | ||
1711 | static struct signatured_type * | |
1712 | lookup_signatured_type (struct objfile *objfile, ULONGEST sig) | |
1713 | { | |
1714 | struct signatured_type find_entry, *entry; | |
1715 | ||
1716 | if (dwarf2_per_objfile->signatured_types == NULL) | |
1717 | { | |
1718 | complaint (&symfile_complaints, | |
1719 | _("missing `.debug_types' section for DW_FORM_sig8 die")); | |
1720 | return 0; | |
1721 | } | |
1722 | ||
1723 | find_entry.signature = sig; | |
1724 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
1725 | return entry; | |
1726 | } | |
1727 | ||
d85a05f0 DJ |
1728 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
1729 | ||
1730 | static void | |
1731 | init_cu_die_reader (struct die_reader_specs *reader, | |
1732 | struct dwarf2_cu *cu) | |
1733 | { | |
1734 | reader->abfd = cu->objfile->obfd; | |
1735 | reader->cu = cu; | |
1736 | if (cu->per_cu->from_debug_types) | |
be391dca TT |
1737 | { |
1738 | gdb_assert (dwarf2_per_objfile->types.readin); | |
1739 | reader->buffer = dwarf2_per_objfile->types.buffer; | |
1740 | } | |
d85a05f0 | 1741 | else |
be391dca TT |
1742 | { |
1743 | gdb_assert (dwarf2_per_objfile->info.readin); | |
1744 | reader->buffer = dwarf2_per_objfile->info.buffer; | |
1745 | } | |
d85a05f0 DJ |
1746 | } |
1747 | ||
1748 | /* Find the base address of the compilation unit for range lists and | |
1749 | location lists. It will normally be specified by DW_AT_low_pc. | |
1750 | In DWARF-3 draft 4, the base address could be overridden by | |
1751 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
1752 | compilation units with discontinuous ranges. */ | |
1753 | ||
1754 | static void | |
1755 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
1756 | { | |
1757 | struct attribute *attr; | |
1758 | ||
1759 | cu->base_known = 0; | |
1760 | cu->base_address = 0; | |
1761 | ||
1762 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
1763 | if (attr) | |
1764 | { | |
1765 | cu->base_address = DW_ADDR (attr); | |
1766 | cu->base_known = 1; | |
1767 | } | |
1768 | else | |
1769 | { | |
1770 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
1771 | if (attr) | |
1772 | { | |
1773 | cu->base_address = DW_ADDR (attr); | |
1774 | cu->base_known = 1; | |
1775 | } | |
1776 | } | |
1777 | } | |
1778 | ||
348e048f DE |
1779 | /* Subroutine of process_type_comp_unit and dwarf2_build_psymtabs_hard |
1780 | to combine the common parts. | |
93311388 | 1781 | Process a compilation unit for a psymtab. |
348e048f DE |
1782 | BUFFER is a pointer to the beginning of the dwarf section buffer, |
1783 | either .debug_info or debug_types. | |
93311388 DE |
1784 | INFO_PTR is a pointer to the start of the CU. |
1785 | Returns a pointer to the next CU. */ | |
aaa75496 | 1786 | |
93311388 DE |
1787 | static gdb_byte * |
1788 | process_psymtab_comp_unit (struct objfile *objfile, | |
1789 | struct dwarf2_per_cu_data *this_cu, | |
1790 | gdb_byte *buffer, gdb_byte *info_ptr, | |
1791 | unsigned int buffer_size) | |
c906108c | 1792 | { |
c906108c | 1793 | bfd *abfd = objfile->obfd; |
93311388 | 1794 | gdb_byte *beg_of_comp_unit = info_ptr; |
d85a05f0 | 1795 | struct die_info *comp_unit_die; |
c906108c | 1796 | struct partial_symtab *pst; |
5734ee8b | 1797 | CORE_ADDR baseaddr; |
93311388 DE |
1798 | struct cleanup *back_to_inner; |
1799 | struct dwarf2_cu cu; | |
d85a05f0 DJ |
1800 | int has_children, has_pc_info; |
1801 | struct attribute *attr; | |
d85a05f0 DJ |
1802 | CORE_ADDR best_lowpc = 0, best_highpc = 0; |
1803 | struct die_reader_specs reader_specs; | |
c906108c | 1804 | |
93311388 DE |
1805 | memset (&cu, 0, sizeof (cu)); |
1806 | cu.objfile = objfile; | |
1807 | obstack_init (&cu.comp_unit_obstack); | |
c906108c | 1808 | |
93311388 | 1809 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); |
ae038cb0 | 1810 | |
93311388 DE |
1811 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, |
1812 | buffer, buffer_size, | |
1813 | abfd); | |
10b3939b | 1814 | |
93311388 DE |
1815 | /* Complete the cu_header. */ |
1816 | cu.header.offset = beg_of_comp_unit - buffer; | |
1817 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
ff013f42 | 1818 | |
93311388 | 1819 | cu.list_in_scope = &file_symbols; |
af703f96 | 1820 | |
328c9494 DJ |
1821 | /* If this compilation unit was already read in, free the |
1822 | cached copy in order to read it in again. This is | |
1823 | necessary because we skipped some symbols when we first | |
1824 | read in the compilation unit (see load_partial_dies). | |
1825 | This problem could be avoided, but the benefit is | |
1826 | unclear. */ | |
1827 | if (this_cu->cu != NULL) | |
1828 | free_one_cached_comp_unit (this_cu->cu); | |
1829 | ||
1830 | /* Note that this is a pointer to our stack frame, being | |
1831 | added to a global data structure. It will be cleaned up | |
1832 | in free_stack_comp_unit when we finish with this | |
1833 | compilation unit. */ | |
1834 | this_cu->cu = &cu; | |
d85a05f0 DJ |
1835 | cu.per_cu = this_cu; |
1836 | ||
93311388 DE |
1837 | /* Read the abbrevs for this compilation unit into a table. */ |
1838 | dwarf2_read_abbrevs (abfd, &cu); | |
1839 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
af703f96 | 1840 | |
93311388 | 1841 | /* Read the compilation unit die. */ |
348e048f DE |
1842 | if (this_cu->from_debug_types) |
1843 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
d85a05f0 DJ |
1844 | init_cu_die_reader (&reader_specs, &cu); |
1845 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
1846 | &has_children); | |
93311388 | 1847 | |
348e048f DE |
1848 | if (this_cu->from_debug_types) |
1849 | { | |
1850 | /* offset,length haven't been set yet for type units. */ | |
1851 | this_cu->offset = cu.header.offset; | |
1852 | this_cu->length = cu.header.length + cu.header.initial_length_size; | |
1853 | } | |
d85a05f0 | 1854 | else if (comp_unit_die->tag == DW_TAG_partial_unit) |
c906108c | 1855 | { |
93311388 DE |
1856 | info_ptr = (beg_of_comp_unit + cu.header.length |
1857 | + cu.header.initial_length_size); | |
1858 | do_cleanups (back_to_inner); | |
1859 | return info_ptr; | |
1860 | } | |
72bf9492 | 1861 | |
93311388 | 1862 | /* Set the language we're debugging. */ |
d85a05f0 DJ |
1863 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, &cu); |
1864 | if (attr) | |
1865 | set_cu_language (DW_UNSND (attr), &cu); | |
1866 | else | |
1867 | set_cu_language (language_minimal, &cu); | |
c906108c | 1868 | |
93311388 | 1869 | /* Allocate a new partial symbol table structure. */ |
d85a05f0 | 1870 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, &cu); |
93311388 | 1871 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
d85a05f0 | 1872 | (attr != NULL) ? DW_STRING (attr) : "", |
93311388 DE |
1873 | /* TEXTLOW and TEXTHIGH are set below. */ |
1874 | 0, | |
1875 | objfile->global_psymbols.next, | |
1876 | objfile->static_psymbols.next); | |
72bf9492 | 1877 | |
d85a05f0 DJ |
1878 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, &cu); |
1879 | if (attr != NULL) | |
1880 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 1881 | |
e38df1d0 | 1882 | pst->read_symtab_private = this_cu; |
72bf9492 | 1883 | |
93311388 | 1884 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 1885 | |
93311388 DE |
1886 | /* Store the function that reads in the rest of the symbol table */ |
1887 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
57349743 | 1888 | |
93311388 | 1889 | this_cu->psymtab = pst; |
c906108c | 1890 | |
d85a05f0 DJ |
1891 | dwarf2_find_base_address (comp_unit_die, &cu); |
1892 | ||
93311388 DE |
1893 | /* Possibly set the default values of LOWPC and HIGHPC from |
1894 | `DW_AT_ranges'. */ | |
d85a05f0 DJ |
1895 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
1896 | &best_highpc, &cu, pst); | |
1897 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
93311388 DE |
1898 | /* Store the contiguous range if it is not empty; it can be empty for |
1899 | CUs with no code. */ | |
1900 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
1901 | best_lowpc + baseaddr, |
1902 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
1903 | |
1904 | /* Check if comp unit has_children. | |
1905 | If so, read the rest of the partial symbols from this comp unit. | |
1906 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 1907 | if (has_children) |
93311388 DE |
1908 | { |
1909 | struct partial_die_info *first_die; | |
1910 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 1911 | |
93311388 DE |
1912 | lowpc = ((CORE_ADDR) -1); |
1913 | highpc = ((CORE_ADDR) 0); | |
c906108c | 1914 | |
93311388 | 1915 | first_die = load_partial_dies (abfd, buffer, info_ptr, 1, &cu); |
c906108c | 1916 | |
93311388 | 1917 | scan_partial_symbols (first_die, &lowpc, &highpc, |
d85a05f0 | 1918 | ! has_pc_info, &cu); |
57c22c6c | 1919 | |
93311388 DE |
1920 | /* If we didn't find a lowpc, set it to highpc to avoid |
1921 | complaints from `maint check'. */ | |
1922 | if (lowpc == ((CORE_ADDR) -1)) | |
1923 | lowpc = highpc; | |
10b3939b | 1924 | |
93311388 DE |
1925 | /* If the compilation unit didn't have an explicit address range, |
1926 | then use the information extracted from its child dies. */ | |
d85a05f0 | 1927 | if (! has_pc_info) |
93311388 | 1928 | { |
d85a05f0 DJ |
1929 | best_lowpc = lowpc; |
1930 | best_highpc = highpc; | |
93311388 DE |
1931 | } |
1932 | } | |
d85a05f0 DJ |
1933 | pst->textlow = best_lowpc + baseaddr; |
1934 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 1935 | |
93311388 DE |
1936 | pst->n_global_syms = objfile->global_psymbols.next - |
1937 | (objfile->global_psymbols.list + pst->globals_offset); | |
1938 | pst->n_static_syms = objfile->static_psymbols.next - | |
1939 | (objfile->static_psymbols.list + pst->statics_offset); | |
1940 | sort_pst_symbols (pst); | |
c906108c | 1941 | |
93311388 DE |
1942 | info_ptr = (beg_of_comp_unit + cu.header.length |
1943 | + cu.header.initial_length_size); | |
ae038cb0 | 1944 | |
348e048f DE |
1945 | if (this_cu->from_debug_types) |
1946 | { | |
1947 | /* It's not clear we want to do anything with stmt lists here. | |
1948 | Waiting to see what gcc ultimately does. */ | |
1949 | } | |
d85a05f0 | 1950 | else |
93311388 DE |
1951 | { |
1952 | /* Get the list of files included in the current compilation unit, | |
1953 | and build a psymtab for each of them. */ | |
d85a05f0 | 1954 | dwarf2_build_include_psymtabs (&cu, comp_unit_die, pst); |
93311388 | 1955 | } |
ae038cb0 | 1956 | |
93311388 | 1957 | do_cleanups (back_to_inner); |
ae038cb0 | 1958 | |
93311388 DE |
1959 | return info_ptr; |
1960 | } | |
ff013f42 | 1961 | |
348e048f DE |
1962 | /* Traversal function for htab_traverse_noresize. |
1963 | Process one .debug_types comp-unit. */ | |
1964 | ||
1965 | static int | |
1966 | process_type_comp_unit (void **slot, void *info) | |
1967 | { | |
1968 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
1969 | struct objfile *objfile = (struct objfile *) info; | |
1970 | struct dwarf2_per_cu_data *this_cu; | |
1971 | ||
1972 | this_cu = &entry->per_cu; | |
1973 | this_cu->from_debug_types = 1; | |
1974 | ||
be391dca | 1975 | gdb_assert (dwarf2_per_objfile->types.readin); |
348e048f DE |
1976 | process_psymtab_comp_unit (objfile, this_cu, |
1977 | dwarf2_per_objfile->types.buffer, | |
1978 | dwarf2_per_objfile->types.buffer + entry->offset, | |
1979 | dwarf2_per_objfile->types.size); | |
1980 | ||
1981 | return 1; | |
1982 | } | |
1983 | ||
1984 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
1985 | Build partial symbol tables for the .debug_types comp-units. */ | |
1986 | ||
1987 | static void | |
1988 | build_type_psymtabs (struct objfile *objfile) | |
1989 | { | |
1990 | if (! create_debug_types_hash_table (objfile)) | |
1991 | return; | |
1992 | ||
1993 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
1994 | process_type_comp_unit, objfile); | |
1995 | } | |
1996 | ||
93311388 DE |
1997 | /* Build the partial symbol table by doing a quick pass through the |
1998 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 1999 | |
93311388 | 2000 | static void |
c67a9c90 | 2001 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 2002 | { |
93311388 DE |
2003 | gdb_byte *info_ptr; |
2004 | struct cleanup *back_to; | |
2005 | ||
be391dca | 2006 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
93311388 | 2007 | info_ptr = dwarf2_per_objfile->info.buffer; |
91c24f0a | 2008 | |
93311388 DE |
2009 | /* Any cached compilation units will be linked by the per-objfile |
2010 | read_in_chain. Make sure to free them when we're done. */ | |
2011 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 2012 | |
348e048f DE |
2013 | build_type_psymtabs (objfile); |
2014 | ||
93311388 | 2015 | create_all_comp_units (objfile); |
c906108c | 2016 | |
93311388 DE |
2017 | objfile->psymtabs_addrmap = |
2018 | addrmap_create_mutable (&objfile->objfile_obstack); | |
72bf9492 | 2019 | |
93311388 DE |
2020 | /* Since the objects we're extracting from .debug_info vary in |
2021 | length, only the individual functions to extract them (like | |
2022 | read_comp_unit_head and load_partial_die) can really know whether | |
2023 | the buffer is large enough to hold another complete object. | |
c906108c | 2024 | |
93311388 DE |
2025 | At the moment, they don't actually check that. If .debug_info |
2026 | holds just one extra byte after the last compilation unit's dies, | |
2027 | then read_comp_unit_head will happily read off the end of the | |
2028 | buffer. read_partial_die is similarly casual. Those functions | |
2029 | should be fixed. | |
c906108c | 2030 | |
93311388 DE |
2031 | For this loop condition, simply checking whether there's any data |
2032 | left at all should be sufficient. */ | |
c906108c | 2033 | |
93311388 DE |
2034 | while (info_ptr < (dwarf2_per_objfile->info.buffer |
2035 | + dwarf2_per_objfile->info.size)) | |
2036 | { | |
2037 | struct dwarf2_per_cu_data *this_cu; | |
dd373385 | 2038 | |
93311388 DE |
2039 | this_cu = dwarf2_find_comp_unit (info_ptr - dwarf2_per_objfile->info.buffer, |
2040 | objfile); | |
aaa75496 | 2041 | |
93311388 DE |
2042 | info_ptr = process_psymtab_comp_unit (objfile, this_cu, |
2043 | dwarf2_per_objfile->info.buffer, | |
2044 | info_ptr, | |
2045 | dwarf2_per_objfile->info.size); | |
c906108c | 2046 | } |
ff013f42 JK |
2047 | |
2048 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
2049 | &objfile->objfile_obstack); | |
2050 | ||
ae038cb0 DJ |
2051 | do_cleanups (back_to); |
2052 | } | |
2053 | ||
93311388 | 2054 | /* Load the partial DIEs for a secondary CU into memory. */ |
ae038cb0 DJ |
2055 | |
2056 | static void | |
93311388 DE |
2057 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu, |
2058 | struct objfile *objfile) | |
ae038cb0 DJ |
2059 | { |
2060 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 2061 | gdb_byte *info_ptr, *beg_of_comp_unit; |
d85a05f0 | 2062 | struct die_info *comp_unit_die; |
ae038cb0 | 2063 | struct dwarf2_cu *cu; |
ae038cb0 | 2064 | struct cleanup *back_to; |
d85a05f0 DJ |
2065 | struct attribute *attr; |
2066 | int has_children; | |
2067 | struct die_reader_specs reader_specs; | |
ae038cb0 | 2068 | |
348e048f DE |
2069 | gdb_assert (! this_cu->from_debug_types); |
2070 | ||
be391dca | 2071 | gdb_assert (dwarf2_per_objfile->info.readin); |
dce234bc | 2072 | info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset; |
ae038cb0 DJ |
2073 | beg_of_comp_unit = info_ptr; |
2074 | ||
93311388 | 2075 | cu = alloc_one_comp_unit (objfile); |
ae038cb0 | 2076 | |
93311388 | 2077 | /* ??? Missing cleanup for CU? */ |
ae038cb0 | 2078 | |
328c9494 DJ |
2079 | /* Link this compilation unit into the compilation unit tree. */ |
2080 | this_cu->cu = cu; | |
2081 | cu->per_cu = this_cu; | |
2082 | cu->type_hash = this_cu->type_hash; | |
2083 | ||
93311388 DE |
2084 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, |
2085 | dwarf2_per_objfile->info.buffer, | |
2086 | dwarf2_per_objfile->info.size, | |
2087 | abfd); | |
ae038cb0 DJ |
2088 | |
2089 | /* Complete the cu_header. */ | |
93311388 | 2090 | cu->header.offset = this_cu->offset; |
d00adf39 | 2091 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; |
ae038cb0 DJ |
2092 | |
2093 | /* Read the abbrevs for this compilation unit into a table. */ | |
2094 | dwarf2_read_abbrevs (abfd, cu); | |
2095 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2096 | ||
2097 | /* Read the compilation unit die. */ | |
d85a05f0 DJ |
2098 | init_cu_die_reader (&reader_specs, cu); |
2099 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
2100 | &has_children); | |
ae038cb0 DJ |
2101 | |
2102 | /* Set the language we're debugging. */ | |
d85a05f0 DJ |
2103 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); |
2104 | if (attr) | |
2105 | set_cu_language (DW_UNSND (attr), cu); | |
2106 | else | |
2107 | set_cu_language (language_minimal, cu); | |
ae038cb0 | 2108 | |
ae038cb0 DJ |
2109 | /* Check if comp unit has_children. |
2110 | If so, read the rest of the partial symbols from this comp unit. | |
2111 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 2112 | if (has_children) |
93311388 | 2113 | load_partial_dies (abfd, dwarf2_per_objfile->info.buffer, info_ptr, 0, cu); |
ae038cb0 DJ |
2114 | |
2115 | do_cleanups (back_to); | |
2116 | } | |
2117 | ||
2118 | /* Create a list of all compilation units in OBJFILE. We do this only | |
2119 | if an inter-comp-unit reference is found; presumably if there is one, | |
2120 | there will be many, and one will occur early in the .debug_info section. | |
2121 | So there's no point in building this list incrementally. */ | |
2122 | ||
2123 | static void | |
2124 | create_all_comp_units (struct objfile *objfile) | |
2125 | { | |
2126 | int n_allocated; | |
2127 | int n_comp_units; | |
2128 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
2129 | gdb_byte *info_ptr; |
2130 | ||
2131 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
2132 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
2133 | |
2134 | n_comp_units = 0; | |
2135 | n_allocated = 10; | |
2136 | all_comp_units = xmalloc (n_allocated | |
2137 | * sizeof (struct dwarf2_per_cu_data *)); | |
2138 | ||
dce234bc | 2139 | while (info_ptr < dwarf2_per_objfile->info.buffer + dwarf2_per_objfile->info.size) |
ae038cb0 | 2140 | { |
c764a876 | 2141 | unsigned int length, initial_length_size; |
ae038cb0 | 2142 | struct dwarf2_per_cu_data *this_cu; |
c764a876 | 2143 | unsigned int offset; |
ae038cb0 | 2144 | |
dce234bc | 2145 | offset = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
2146 | |
2147 | /* Read just enough information to find out where the next | |
2148 | compilation unit is. */ | |
c764a876 DE |
2149 | length = read_initial_length (objfile->obfd, info_ptr, |
2150 | &initial_length_size); | |
ae038cb0 DJ |
2151 | |
2152 | /* Save the compilation unit for later lookup. */ | |
2153 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
2154 | sizeof (struct dwarf2_per_cu_data)); | |
2155 | memset (this_cu, 0, sizeof (*this_cu)); | |
2156 | this_cu->offset = offset; | |
c764a876 | 2157 | this_cu->length = length + initial_length_size; |
ae038cb0 DJ |
2158 | |
2159 | if (n_comp_units == n_allocated) | |
2160 | { | |
2161 | n_allocated *= 2; | |
2162 | all_comp_units = xrealloc (all_comp_units, | |
2163 | n_allocated | |
2164 | * sizeof (struct dwarf2_per_cu_data *)); | |
2165 | } | |
2166 | all_comp_units[n_comp_units++] = this_cu; | |
2167 | ||
2168 | info_ptr = info_ptr + this_cu->length; | |
2169 | } | |
2170 | ||
2171 | dwarf2_per_objfile->all_comp_units | |
2172 | = obstack_alloc (&objfile->objfile_obstack, | |
2173 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
2174 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
2175 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
2176 | xfree (all_comp_units); | |
2177 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
2178 | } |
2179 | ||
5734ee8b DJ |
2180 | /* Process all loaded DIEs for compilation unit CU, starting at |
2181 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
2182 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
2183 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
2184 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
2185 | and record the covered ranges in the addrmap. */ | |
c906108c | 2186 | |
72bf9492 DJ |
2187 | static void |
2188 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 2189 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 2190 | { |
72bf9492 | 2191 | struct partial_die_info *pdi; |
c906108c | 2192 | |
91c24f0a DC |
2193 | /* Now, march along the PDI's, descending into ones which have |
2194 | interesting children but skipping the children of the other ones, | |
2195 | until we reach the end of the compilation unit. */ | |
c906108c | 2196 | |
72bf9492 | 2197 | pdi = first_die; |
91c24f0a | 2198 | |
72bf9492 DJ |
2199 | while (pdi != NULL) |
2200 | { | |
2201 | fixup_partial_die (pdi, cu); | |
c906108c | 2202 | |
91c24f0a DC |
2203 | /* Anonymous namespaces have no name but have interesting |
2204 | children, so we need to look at them. Ditto for anonymous | |
2205 | enums. */ | |
933c6fe4 | 2206 | |
72bf9492 DJ |
2207 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
2208 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 2209 | { |
72bf9492 | 2210 | switch (pdi->tag) |
c906108c SS |
2211 | { |
2212 | case DW_TAG_subprogram: | |
5734ee8b | 2213 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c SS |
2214 | break; |
2215 | case DW_TAG_variable: | |
2216 | case DW_TAG_typedef: | |
91c24f0a | 2217 | case DW_TAG_union_type: |
72bf9492 | 2218 | if (!pdi->is_declaration) |
63d06c5c | 2219 | { |
72bf9492 | 2220 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
2221 | } |
2222 | break; | |
c906108c | 2223 | case DW_TAG_class_type: |
680b30c7 | 2224 | case DW_TAG_interface_type: |
c906108c | 2225 | case DW_TAG_structure_type: |
72bf9492 | 2226 | if (!pdi->is_declaration) |
c906108c | 2227 | { |
72bf9492 | 2228 | add_partial_symbol (pdi, cu); |
c906108c SS |
2229 | } |
2230 | break; | |
91c24f0a | 2231 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
2232 | if (!pdi->is_declaration) |
2233 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
2234 | break; |
2235 | case DW_TAG_base_type: | |
a02abb62 | 2236 | case DW_TAG_subrange_type: |
c906108c | 2237 | /* File scope base type definitions are added to the partial |
c5aa993b | 2238 | symbol table. */ |
72bf9492 | 2239 | add_partial_symbol (pdi, cu); |
c906108c | 2240 | break; |
d9fa45fe | 2241 | case DW_TAG_namespace: |
5734ee8b | 2242 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 2243 | break; |
5d7cb8df JK |
2244 | case DW_TAG_module: |
2245 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
2246 | break; | |
c906108c SS |
2247 | default: |
2248 | break; | |
2249 | } | |
2250 | } | |
2251 | ||
72bf9492 DJ |
2252 | /* If the die has a sibling, skip to the sibling. */ |
2253 | ||
2254 | pdi = pdi->die_sibling; | |
2255 | } | |
2256 | } | |
2257 | ||
2258 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 2259 | |
72bf9492 | 2260 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
2261 | name is concatenated with "::" and the partial DIE's name. For |
2262 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
2263 | Enumerators are an exception; they use the scope of their parent |
2264 | enumeration type, i.e. the name of the enumeration type is not | |
2265 | prepended to the enumerator. | |
91c24f0a | 2266 | |
72bf9492 DJ |
2267 | There are two complexities. One is DW_AT_specification; in this |
2268 | case "parent" means the parent of the target of the specification, | |
2269 | instead of the direct parent of the DIE. The other is compilers | |
2270 | which do not emit DW_TAG_namespace; in this case we try to guess | |
2271 | the fully qualified name of structure types from their members' | |
2272 | linkage names. This must be done using the DIE's children rather | |
2273 | than the children of any DW_AT_specification target. We only need | |
2274 | to do this for structures at the top level, i.e. if the target of | |
2275 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
2276 | have a parent. */ | |
2277 | ||
2278 | /* Compute the scope prefix associated with PDI's parent, in | |
2279 | compilation unit CU. The result will be allocated on CU's | |
2280 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
2281 | field. NULL is returned if no prefix is necessary. */ | |
2282 | static char * | |
2283 | partial_die_parent_scope (struct partial_die_info *pdi, | |
2284 | struct dwarf2_cu *cu) | |
2285 | { | |
2286 | char *grandparent_scope; | |
2287 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 2288 | |
72bf9492 DJ |
2289 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
2290 | then this means the parent of the specification DIE. */ | |
2291 | ||
2292 | real_pdi = pdi; | |
72bf9492 | 2293 | while (real_pdi->has_specification) |
10b3939b | 2294 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
2295 | |
2296 | parent = real_pdi->die_parent; | |
2297 | if (parent == NULL) | |
2298 | return NULL; | |
2299 | ||
2300 | if (parent->scope_set) | |
2301 | return parent->scope; | |
2302 | ||
2303 | fixup_partial_die (parent, cu); | |
2304 | ||
10b3939b | 2305 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 2306 | |
acebe513 UW |
2307 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
2308 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
2309 | Work around this problem here. */ | |
2310 | if (cu->language == language_cplus | |
2311 | && parent->tag == DW_TAG_namespace | |
2312 | && strcmp (parent->name, "::") == 0 | |
2313 | && grandparent_scope == NULL) | |
2314 | { | |
2315 | parent->scope = NULL; | |
2316 | parent->scope_set = 1; | |
2317 | return NULL; | |
2318 | } | |
2319 | ||
72bf9492 DJ |
2320 | if (parent->tag == DW_TAG_namespace |
2321 | || parent->tag == DW_TAG_structure_type | |
2322 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 2323 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
2324 | || parent->tag == DW_TAG_union_type |
2325 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
2326 | { |
2327 | if (grandparent_scope == NULL) | |
2328 | parent->scope = parent->name; | |
2329 | else | |
987504bb JJ |
2330 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
2331 | parent->name, cu); | |
72bf9492 | 2332 | } |
ceeb3d5a | 2333 | else if (parent->tag == DW_TAG_enumerator) |
72bf9492 DJ |
2334 | /* Enumerators should not get the name of the enumeration as a prefix. */ |
2335 | parent->scope = grandparent_scope; | |
2336 | else | |
2337 | { | |
2338 | /* FIXME drow/2004-04-01: What should we be doing with | |
2339 | function-local names? For partial symbols, we should probably be | |
2340 | ignoring them. */ | |
2341 | complaint (&symfile_complaints, | |
e2e0b3e5 | 2342 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
2343 | parent->tag, pdi->offset); |
2344 | parent->scope = grandparent_scope; | |
c906108c SS |
2345 | } |
2346 | ||
72bf9492 DJ |
2347 | parent->scope_set = 1; |
2348 | return parent->scope; | |
2349 | } | |
2350 | ||
2351 | /* Return the fully scoped name associated with PDI, from compilation unit | |
2352 | CU. The result will be allocated with malloc. */ | |
2353 | static char * | |
2354 | partial_die_full_name (struct partial_die_info *pdi, | |
2355 | struct dwarf2_cu *cu) | |
2356 | { | |
2357 | char *parent_scope; | |
2358 | ||
2359 | parent_scope = partial_die_parent_scope (pdi, cu); | |
2360 | if (parent_scope == NULL) | |
2361 | return NULL; | |
2362 | else | |
987504bb | 2363 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
2364 | } |
2365 | ||
2366 | static void | |
72bf9492 | 2367 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 2368 | { |
e7c27a73 | 2369 | struct objfile *objfile = cu->objfile; |
c906108c | 2370 | CORE_ADDR addr = 0; |
decbce07 | 2371 | char *actual_name = NULL; |
5c4e30ca | 2372 | const struct partial_symbol *psym = NULL; |
e142c38c | 2373 | CORE_ADDR baseaddr; |
72bf9492 | 2374 | int built_actual_name = 0; |
e142c38c DJ |
2375 | |
2376 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2377 | |
94af9270 KS |
2378 | actual_name = partial_die_full_name (pdi, cu); |
2379 | if (actual_name) | |
2380 | built_actual_name = 1; | |
63d06c5c | 2381 | |
72bf9492 DJ |
2382 | if (actual_name == NULL) |
2383 | actual_name = pdi->name; | |
2384 | ||
c906108c SS |
2385 | switch (pdi->tag) |
2386 | { | |
2387 | case DW_TAG_subprogram: | |
2cfa0c8d | 2388 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 2389 | { |
2cfa0c8d JB |
2390 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
2391 | of the global scope. But in Ada, we want to be able to access | |
2392 | nested procedures globally. So all Ada subprograms are stored | |
2393 | in the global scope. */ | |
38d518c9 | 2394 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 2395 | mst_text, objfile); */ |
38d518c9 | 2396 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2397 | built_actual_name, |
5c4e30ca DC |
2398 | VAR_DOMAIN, LOC_BLOCK, |
2399 | &objfile->global_psymbols, | |
2400 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 2401 | cu->language, objfile); |
c906108c SS |
2402 | } |
2403 | else | |
2404 | { | |
38d518c9 | 2405 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 2406 | mst_file_text, objfile); */ |
38d518c9 | 2407 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2408 | built_actual_name, |
5c4e30ca DC |
2409 | VAR_DOMAIN, LOC_BLOCK, |
2410 | &objfile->static_psymbols, | |
2411 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 2412 | cu->language, objfile); |
c906108c SS |
2413 | } |
2414 | break; | |
2415 | case DW_TAG_variable: | |
2416 | if (pdi->is_external) | |
2417 | { | |
2418 | /* Global Variable. | |
2419 | Don't enter into the minimal symbol tables as there is | |
2420 | a minimal symbol table entry from the ELF symbols already. | |
2421 | Enter into partial symbol table if it has a location | |
2422 | descriptor or a type. | |
2423 | If the location descriptor is missing, new_symbol will create | |
2424 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
2425 | be determined from the minimal symbol table whenever the variable | |
2426 | is referenced. | |
2427 | The address for the partial symbol table entry is not | |
2428 | used by GDB, but it comes in handy for debugging partial symbol | |
2429 | table building. */ | |
2430 | ||
2431 | if (pdi->locdesc) | |
e7c27a73 | 2432 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 2433 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 2434 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2435 | built_actual_name, |
5c4e30ca DC |
2436 | VAR_DOMAIN, LOC_STATIC, |
2437 | &objfile->global_psymbols, | |
2438 | 0, addr + baseaddr, | |
e142c38c | 2439 | cu->language, objfile); |
c906108c SS |
2440 | } |
2441 | else | |
2442 | { | |
2443 | /* Static Variable. Skip symbols without location descriptors. */ | |
2444 | if (pdi->locdesc == NULL) | |
decbce07 MS |
2445 | { |
2446 | if (built_actual_name) | |
2447 | xfree (actual_name); | |
2448 | return; | |
2449 | } | |
e7c27a73 | 2450 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 2451 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 2452 | mst_file_data, objfile); */ |
38d518c9 | 2453 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2454 | built_actual_name, |
5c4e30ca DC |
2455 | VAR_DOMAIN, LOC_STATIC, |
2456 | &objfile->static_psymbols, | |
2457 | 0, addr + baseaddr, | |
e142c38c | 2458 | cu->language, objfile); |
c906108c SS |
2459 | } |
2460 | break; | |
2461 | case DW_TAG_typedef: | |
2462 | case DW_TAG_base_type: | |
a02abb62 | 2463 | case DW_TAG_subrange_type: |
38d518c9 | 2464 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2465 | built_actual_name, |
176620f1 | 2466 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 2467 | &objfile->static_psymbols, |
e142c38c | 2468 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2469 | break; |
72bf9492 DJ |
2470 | case DW_TAG_namespace: |
2471 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 2472 | built_actual_name, |
72bf9492 DJ |
2473 | VAR_DOMAIN, LOC_TYPEDEF, |
2474 | &objfile->global_psymbols, | |
2475 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
2476 | break; | |
c906108c | 2477 | case DW_TAG_class_type: |
680b30c7 | 2478 | case DW_TAG_interface_type: |
c906108c SS |
2479 | case DW_TAG_structure_type: |
2480 | case DW_TAG_union_type: | |
2481 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
2482 | /* Skip external references. The DWARF standard says in the section |
2483 | about "Structure, Union, and Class Type Entries": "An incomplete | |
2484 | structure, union or class type is represented by a structure, | |
2485 | union or class entry that does not have a byte size attribute | |
2486 | and that has a DW_AT_declaration attribute." */ | |
2487 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
2488 | { |
2489 | if (built_actual_name) | |
2490 | xfree (actual_name); | |
2491 | return; | |
2492 | } | |
fa4028e9 | 2493 | |
63d06c5c DC |
2494 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
2495 | static vs. global. */ | |
38d518c9 | 2496 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2497 | built_actual_name, |
176620f1 | 2498 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
2499 | (cu->language == language_cplus |
2500 | || cu->language == language_java) | |
63d06c5c DC |
2501 | ? &objfile->global_psymbols |
2502 | : &objfile->static_psymbols, | |
e142c38c | 2503 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2504 | |
c906108c SS |
2505 | break; |
2506 | case DW_TAG_enumerator: | |
38d518c9 | 2507 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 2508 | built_actual_name, |
176620f1 | 2509 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
2510 | (cu->language == language_cplus |
2511 | || cu->language == language_java) | |
f6fe98ef DJ |
2512 | ? &objfile->global_psymbols |
2513 | : &objfile->static_psymbols, | |
e142c38c | 2514 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2515 | break; |
2516 | default: | |
2517 | break; | |
2518 | } | |
5c4e30ca | 2519 | |
72bf9492 DJ |
2520 | if (built_actual_name) |
2521 | xfree (actual_name); | |
c906108c SS |
2522 | } |
2523 | ||
5c4e30ca DC |
2524 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2525 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2526 | the name of the enclosing namespace. */ | |
91c24f0a | 2527 | |
72bf9492 DJ |
2528 | static void |
2529 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2530 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 2531 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 2532 | { |
72bf9492 | 2533 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2534 | |
72bf9492 | 2535 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2536 | |
2537 | /* Now scan partial symbols in that namespace. */ | |
2538 | ||
91c24f0a | 2539 | if (pdi->has_children) |
5734ee8b | 2540 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
2541 | } |
2542 | ||
5d7cb8df JK |
2543 | /* Read a partial die corresponding to a Fortran module. */ |
2544 | ||
2545 | static void | |
2546 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
2547 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
2548 | { | |
2549 | /* Now scan partial symbols in that module. | |
2550 | ||
2551 | FIXME: Support the separate Fortran module namespaces. */ | |
2552 | ||
2553 | if (pdi->has_children) | |
2554 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
2555 | } | |
2556 | ||
bc30ff58 JB |
2557 | /* Read a partial die corresponding to a subprogram and create a partial |
2558 | symbol for that subprogram. When the CU language allows it, this | |
2559 | routine also defines a partial symbol for each nested subprogram | |
2560 | that this subprogram contains. | |
2561 | ||
2562 | DIE my also be a lexical block, in which case we simply search | |
2563 | recursively for suprograms defined inside that lexical block. | |
2564 | Again, this is only performed when the CU language allows this | |
2565 | type of definitions. */ | |
2566 | ||
2567 | static void | |
2568 | add_partial_subprogram (struct partial_die_info *pdi, | |
2569 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 2570 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
2571 | { |
2572 | if (pdi->tag == DW_TAG_subprogram) | |
2573 | { | |
2574 | if (pdi->has_pc_info) | |
2575 | { | |
2576 | if (pdi->lowpc < *lowpc) | |
2577 | *lowpc = pdi->lowpc; | |
2578 | if (pdi->highpc > *highpc) | |
2579 | *highpc = pdi->highpc; | |
5734ee8b DJ |
2580 | if (need_pc) |
2581 | { | |
2582 | CORE_ADDR baseaddr; | |
2583 | struct objfile *objfile = cu->objfile; | |
2584 | ||
2585 | baseaddr = ANOFFSET (objfile->section_offsets, | |
2586 | SECT_OFF_TEXT (objfile)); | |
2587 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
2588 | pdi->lowpc + baseaddr, |
2589 | pdi->highpc - 1 + baseaddr, | |
5734ee8b DJ |
2590 | cu->per_cu->psymtab); |
2591 | } | |
bc30ff58 | 2592 | if (!pdi->is_declaration) |
e8d05480 JB |
2593 | /* Ignore subprogram DIEs that do not have a name, they are |
2594 | illegal. Do not emit a complaint at this point, we will | |
2595 | do so when we convert this psymtab into a symtab. */ | |
2596 | if (pdi->name) | |
2597 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
2598 | } |
2599 | } | |
2600 | ||
2601 | if (! pdi->has_children) | |
2602 | return; | |
2603 | ||
2604 | if (cu->language == language_ada) | |
2605 | { | |
2606 | pdi = pdi->die_child; | |
2607 | while (pdi != NULL) | |
2608 | { | |
2609 | fixup_partial_die (pdi, cu); | |
2610 | if (pdi->tag == DW_TAG_subprogram | |
2611 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 2612 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
2613 | pdi = pdi->die_sibling; |
2614 | } | |
2615 | } | |
2616 | } | |
2617 | ||
72bf9492 DJ |
2618 | /* See if we can figure out if the class lives in a namespace. We do |
2619 | this by looking for a member function; its demangled name will | |
2620 | contain namespace info, if there is any. */ | |
63d06c5c | 2621 | |
72bf9492 DJ |
2622 | static void |
2623 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2624 | struct dwarf2_cu *cu) | |
63d06c5c | 2625 | { |
987504bb JJ |
2626 | if ((cu->language == language_cplus |
2627 | || cu->language == language_java) | |
72bf9492 | 2628 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2629 | && struct_pdi->has_children) |
2630 | { | |
63d06c5c DC |
2631 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2632 | what template types look like, because the demangler | |
2633 | frequently doesn't give the same name as the debug info. We | |
2634 | could fix this by only using the demangled name to get the | |
134d01f1 | 2635 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2636 | |
72bf9492 | 2637 | struct partial_die_info *real_pdi; |
5d51ca54 | 2638 | |
72bf9492 DJ |
2639 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2640 | we should not do this. We'll prepend the parent's fully qualified | |
2641 | name when we create the partial symbol. */ | |
5d51ca54 | 2642 | |
72bf9492 | 2643 | real_pdi = struct_pdi; |
72bf9492 | 2644 | while (real_pdi->has_specification) |
10b3939b | 2645 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2646 | |
72bf9492 DJ |
2647 | if (real_pdi->die_parent != NULL) |
2648 | return; | |
63d06c5c | 2649 | } |
63d06c5c DC |
2650 | } |
2651 | ||
91c24f0a DC |
2652 | /* Read a partial die corresponding to an enumeration type. */ |
2653 | ||
72bf9492 DJ |
2654 | static void |
2655 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2656 | struct dwarf2_cu *cu) | |
91c24f0a | 2657 | { |
72bf9492 | 2658 | struct partial_die_info *pdi; |
91c24f0a DC |
2659 | |
2660 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2661 | add_partial_symbol (enum_pdi, cu); |
2662 | ||
2663 | pdi = enum_pdi->die_child; | |
2664 | while (pdi) | |
91c24f0a | 2665 | { |
72bf9492 | 2666 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 2667 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 2668 | else |
72bf9492 DJ |
2669 | add_partial_symbol (pdi, cu); |
2670 | pdi = pdi->die_sibling; | |
91c24f0a | 2671 | } |
91c24f0a DC |
2672 | } |
2673 | ||
4bb7a0a7 DJ |
2674 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2675 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2676 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2677 | the initial number. */ | |
2678 | ||
2679 | static struct abbrev_info * | |
fe1b8b76 | 2680 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 2681 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2682 | { |
2683 | bfd *abfd = cu->objfile->obfd; | |
2684 | unsigned int abbrev_number; | |
2685 | struct abbrev_info *abbrev; | |
2686 | ||
2687 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2688 | ||
2689 | if (abbrev_number == 0) | |
2690 | return NULL; | |
2691 | ||
2692 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2693 | if (!abbrev) | |
2694 | { | |
8a3fe4f8 | 2695 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
2696 | bfd_get_filename (abfd)); |
2697 | } | |
2698 | ||
2699 | return abbrev; | |
2700 | } | |
2701 | ||
93311388 DE |
2702 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
2703 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
2704 | DIE. Any children of the skipped DIEs will also be skipped. */ |
2705 | ||
fe1b8b76 | 2706 | static gdb_byte * |
93311388 | 2707 | skip_children (gdb_byte *buffer, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2708 | { |
2709 | struct abbrev_info *abbrev; | |
2710 | unsigned int bytes_read; | |
2711 | ||
2712 | while (1) | |
2713 | { | |
2714 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2715 | if (abbrev == NULL) | |
2716 | return info_ptr + bytes_read; | |
2717 | else | |
93311388 | 2718 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
4bb7a0a7 DJ |
2719 | } |
2720 | } | |
2721 | ||
93311388 DE |
2722 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
2723 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
2724 | abbrev corresponding to that skipped uleb128 should be passed in |
2725 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2726 | children. */ | |
2727 | ||
fe1b8b76 | 2728 | static gdb_byte * |
93311388 DE |
2729 | skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
2730 | struct abbrev_info *abbrev, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
2731 | { |
2732 | unsigned int bytes_read; | |
2733 | struct attribute attr; | |
2734 | bfd *abfd = cu->objfile->obfd; | |
2735 | unsigned int form, i; | |
2736 | ||
2737 | for (i = 0; i < abbrev->num_attrs; i++) | |
2738 | { | |
2739 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2740 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2741 | { | |
2742 | read_attribute (&attr, &abbrev->attrs[i], | |
2743 | abfd, info_ptr, cu); | |
2744 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 2745 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 2746 | else |
93311388 | 2747 | return buffer + dwarf2_get_ref_die_offset (&attr); |
4bb7a0a7 DJ |
2748 | } |
2749 | ||
2750 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2751 | form = abbrev->attrs[i].form; | |
2752 | skip_attribute: | |
2753 | switch (form) | |
2754 | { | |
4bb7a0a7 | 2755 | case DW_FORM_ref_addr: |
ae411497 TT |
2756 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
2757 | and later it is offset sized. */ | |
2758 | if (cu->header.version == 2) | |
2759 | info_ptr += cu->header.addr_size; | |
2760 | else | |
2761 | info_ptr += cu->header.offset_size; | |
2762 | break; | |
2763 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
2764 | info_ptr += cu->header.addr_size; |
2765 | break; | |
2766 | case DW_FORM_data1: | |
2767 | case DW_FORM_ref1: | |
2768 | case DW_FORM_flag: | |
2769 | info_ptr += 1; | |
2770 | break; | |
2dc7f7b3 TT |
2771 | case DW_FORM_flag_present: |
2772 | break; | |
4bb7a0a7 DJ |
2773 | case DW_FORM_data2: |
2774 | case DW_FORM_ref2: | |
2775 | info_ptr += 2; | |
2776 | break; | |
2777 | case DW_FORM_data4: | |
2778 | case DW_FORM_ref4: | |
2779 | info_ptr += 4; | |
2780 | break; | |
2781 | case DW_FORM_data8: | |
2782 | case DW_FORM_ref8: | |
348e048f | 2783 | case DW_FORM_sig8: |
4bb7a0a7 DJ |
2784 | info_ptr += 8; |
2785 | break; | |
2786 | case DW_FORM_string: | |
2787 | read_string (abfd, info_ptr, &bytes_read); | |
2788 | info_ptr += bytes_read; | |
2789 | break; | |
2dc7f7b3 | 2790 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
2791 | case DW_FORM_strp: |
2792 | info_ptr += cu->header.offset_size; | |
2793 | break; | |
2dc7f7b3 | 2794 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
2795 | case DW_FORM_block: |
2796 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2797 | info_ptr += bytes_read; | |
2798 | break; | |
2799 | case DW_FORM_block1: | |
2800 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2801 | break; | |
2802 | case DW_FORM_block2: | |
2803 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2804 | break; | |
2805 | case DW_FORM_block4: | |
2806 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2807 | break; | |
2808 | case DW_FORM_sdata: | |
2809 | case DW_FORM_udata: | |
2810 | case DW_FORM_ref_udata: | |
2811 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2812 | break; | |
2813 | case DW_FORM_indirect: | |
2814 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2815 | info_ptr += bytes_read; | |
2816 | /* We need to continue parsing from here, so just go back to | |
2817 | the top. */ | |
2818 | goto skip_attribute; | |
2819 | ||
2820 | default: | |
8a3fe4f8 | 2821 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
2822 | dwarf_form_name (form), |
2823 | bfd_get_filename (abfd)); | |
2824 | } | |
2825 | } | |
2826 | ||
2827 | if (abbrev->has_children) | |
93311388 | 2828 | return skip_children (buffer, info_ptr, cu); |
4bb7a0a7 DJ |
2829 | else |
2830 | return info_ptr; | |
2831 | } | |
2832 | ||
93311388 DE |
2833 | /* Locate ORIG_PDI's sibling. |
2834 | INFO_PTR should point to the start of the next DIE after ORIG_PDI | |
2835 | in BUFFER. */ | |
91c24f0a | 2836 | |
fe1b8b76 | 2837 | static gdb_byte * |
93311388 DE |
2838 | locate_pdi_sibling (struct partial_die_info *orig_pdi, |
2839 | gdb_byte *buffer, gdb_byte *info_ptr, | |
e7c27a73 | 2840 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2841 | { |
2842 | /* Do we know the sibling already? */ | |
72bf9492 | 2843 | |
91c24f0a DC |
2844 | if (orig_pdi->sibling) |
2845 | return orig_pdi->sibling; | |
2846 | ||
2847 | /* Are there any children to deal with? */ | |
2848 | ||
2849 | if (!orig_pdi->has_children) | |
2850 | return info_ptr; | |
2851 | ||
4bb7a0a7 | 2852 | /* Skip the children the long way. */ |
91c24f0a | 2853 | |
93311388 | 2854 | return skip_children (buffer, info_ptr, cu); |
91c24f0a DC |
2855 | } |
2856 | ||
c906108c SS |
2857 | /* Expand this partial symbol table into a full symbol table. */ |
2858 | ||
2859 | static void | |
fba45db2 | 2860 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2861 | { |
2862 | /* FIXME: This is barely more than a stub. */ | |
2863 | if (pst != NULL) | |
2864 | { | |
2865 | if (pst->readin) | |
2866 | { | |
8a3fe4f8 | 2867 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
2868 | } |
2869 | else | |
2870 | { | |
2871 | if (info_verbose) | |
2872 | { | |
a3f17187 | 2873 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
2874 | gdb_flush (gdb_stdout); |
2875 | } | |
2876 | ||
10b3939b DJ |
2877 | /* Restore our global data. */ |
2878 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2879 | dwarf2_objfile_data_key); | |
2880 | ||
b2ab525c KB |
2881 | /* If this psymtab is constructed from a debug-only objfile, the |
2882 | has_section_at_zero flag will not necessarily be correct. We | |
2883 | can get the correct value for this flag by looking at the data | |
2884 | associated with the (presumably stripped) associated objfile. */ | |
2885 | if (pst->objfile->separate_debug_objfile_backlink) | |
2886 | { | |
2887 | struct dwarf2_per_objfile *dpo_backlink | |
2888 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
2889 | dwarf2_objfile_data_key); | |
9a619af0 | 2890 | |
b2ab525c KB |
2891 | dwarf2_per_objfile->has_section_at_zero |
2892 | = dpo_backlink->has_section_at_zero; | |
2893 | } | |
2894 | ||
c906108c SS |
2895 | psymtab_to_symtab_1 (pst); |
2896 | ||
2897 | /* Finish up the debug error message. */ | |
2898 | if (info_verbose) | |
a3f17187 | 2899 | printf_filtered (_("done.\n")); |
c906108c SS |
2900 | } |
2901 | } | |
2902 | } | |
2903 | ||
10b3939b DJ |
2904 | /* Add PER_CU to the queue. */ |
2905 | ||
2906 | static void | |
03dd20cc | 2907 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b DJ |
2908 | { |
2909 | struct dwarf2_queue_item *item; | |
2910 | ||
2911 | per_cu->queued = 1; | |
2912 | item = xmalloc (sizeof (*item)); | |
2913 | item->per_cu = per_cu; | |
2914 | item->next = NULL; | |
2915 | ||
2916 | if (dwarf2_queue == NULL) | |
2917 | dwarf2_queue = item; | |
2918 | else | |
2919 | dwarf2_queue_tail->next = item; | |
2920 | ||
2921 | dwarf2_queue_tail = item; | |
2922 | } | |
2923 | ||
2924 | /* Process the queue. */ | |
2925 | ||
2926 | static void | |
2927 | process_queue (struct objfile *objfile) | |
2928 | { | |
2929 | struct dwarf2_queue_item *item, *next_item; | |
2930 | ||
03dd20cc DJ |
2931 | /* The queue starts out with one item, but following a DIE reference |
2932 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
2933 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
2934 | { | |
31ffec48 | 2935 | if (item->per_cu->psymtab && !item->per_cu->psymtab->readin) |
10b3939b DJ |
2936 | process_full_comp_unit (item->per_cu); |
2937 | ||
2938 | item->per_cu->queued = 0; | |
2939 | next_item = item->next; | |
2940 | xfree (item); | |
2941 | } | |
2942 | ||
2943 | dwarf2_queue_tail = NULL; | |
2944 | } | |
2945 | ||
2946 | /* Free all allocated queue entries. This function only releases anything if | |
2947 | an error was thrown; if the queue was processed then it would have been | |
2948 | freed as we went along. */ | |
2949 | ||
2950 | static void | |
2951 | dwarf2_release_queue (void *dummy) | |
2952 | { | |
2953 | struct dwarf2_queue_item *item, *last; | |
2954 | ||
2955 | item = dwarf2_queue; | |
2956 | while (item) | |
2957 | { | |
2958 | /* Anything still marked queued is likely to be in an | |
2959 | inconsistent state, so discard it. */ | |
2960 | if (item->per_cu->queued) | |
2961 | { | |
2962 | if (item->per_cu->cu != NULL) | |
2963 | free_one_cached_comp_unit (item->per_cu->cu); | |
2964 | item->per_cu->queued = 0; | |
2965 | } | |
2966 | ||
2967 | last = item; | |
2968 | item = item->next; | |
2969 | xfree (last); | |
2970 | } | |
2971 | ||
2972 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2973 | } | |
2974 | ||
2975 | /* Read in full symbols for PST, and anything it depends on. */ | |
2976 | ||
c906108c | 2977 | static void |
fba45db2 | 2978 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 2979 | { |
10b3939b | 2980 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 2981 | struct cleanup *back_to; |
aaa75496 JB |
2982 | int i; |
2983 | ||
2984 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2985 | if (!pst->dependencies[i]->readin) | |
2986 | { | |
2987 | /* Inform about additional files that need to be read in. */ | |
2988 | if (info_verbose) | |
2989 | { | |
a3f17187 | 2990 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
2991 | fputs_filtered (" ", gdb_stdout); |
2992 | wrap_here (""); | |
2993 | fputs_filtered ("and ", gdb_stdout); | |
2994 | wrap_here (""); | |
2995 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
2996 | wrap_here (""); /* Flush output */ | |
2997 | gdb_flush (gdb_stdout); | |
2998 | } | |
2999 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
3000 | } | |
3001 | ||
e38df1d0 | 3002 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
3003 | |
3004 | if (per_cu == NULL) | |
aaa75496 JB |
3005 | { |
3006 | /* It's an include file, no symbols to read for it. | |
3007 | Everything is in the parent symtab. */ | |
3008 | pst->readin = 1; | |
3009 | return; | |
3010 | } | |
c906108c | 3011 | |
10b3939b DJ |
3012 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
3013 | ||
03dd20cc | 3014 | queue_comp_unit (per_cu, pst->objfile); |
10b3939b | 3015 | |
348e048f DE |
3016 | if (per_cu->from_debug_types) |
3017 | read_signatured_type_at_offset (pst->objfile, per_cu->offset); | |
3018 | else | |
3019 | load_full_comp_unit (per_cu, pst->objfile); | |
3020 | ||
10b3939b DJ |
3021 | process_queue (pst->objfile); |
3022 | ||
3023 | /* Age the cache, releasing compilation units that have not | |
3024 | been used recently. */ | |
3025 | age_cached_comp_units (); | |
3026 | ||
3027 | do_cleanups (back_to); | |
3028 | } | |
3029 | ||
93311388 | 3030 | /* Load the DIEs associated with PER_CU into memory. */ |
10b3939b | 3031 | |
93311388 | 3032 | static void |
31ffec48 | 3033 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 3034 | { |
31ffec48 | 3035 | bfd *abfd = objfile->obfd; |
10b3939b | 3036 | struct dwarf2_cu *cu; |
c764a876 | 3037 | unsigned int offset; |
93311388 | 3038 | gdb_byte *info_ptr, *beg_of_comp_unit; |
10b3939b DJ |
3039 | struct cleanup *back_to, *free_cu_cleanup; |
3040 | struct attribute *attr; | |
6502dd73 | 3041 | |
348e048f DE |
3042 | gdb_assert (! per_cu->from_debug_types); |
3043 | ||
c906108c | 3044 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 3045 | offset = per_cu->offset; |
6502dd73 | 3046 | |
be391dca | 3047 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
dce234bc | 3048 | info_ptr = dwarf2_per_objfile->info.buffer + offset; |
93311388 | 3049 | beg_of_comp_unit = info_ptr; |
63d06c5c | 3050 | |
93311388 | 3051 | cu = alloc_one_comp_unit (objfile); |
c906108c | 3052 | |
10b3939b DJ |
3053 | /* If an error occurs while loading, release our storage. */ |
3054 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 3055 | |
93311388 | 3056 | /* Read in the comp_unit header. */ |
10b3939b | 3057 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c | 3058 | |
93311388 DE |
3059 | /* Complete the cu_header. */ |
3060 | cu->header.offset = offset; | |
3061 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
3062 | ||
3063 | /* Read the abbrevs for this compilation unit. */ | |
10b3939b DJ |
3064 | dwarf2_read_abbrevs (abfd, cu); |
3065 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
3066 | ||
93311388 | 3067 | /* Link this compilation unit into the compilation unit tree. */ |
10b3939b | 3068 | per_cu->cu = cu; |
93311388 | 3069 | cu->per_cu = per_cu; |
f792889a | 3070 | cu->type_hash = per_cu->type_hash; |
e142c38c | 3071 | |
93311388 | 3072 | cu->dies = read_comp_unit (info_ptr, cu); |
10b3939b DJ |
3073 | |
3074 | /* We try not to read any attributes in this function, because not | |
3075 | all objfiles needed for references have been loaded yet, and symbol | |
3076 | table processing isn't initialized. But we have to set the CU language, | |
3077 | or we won't be able to build types correctly. */ | |
3078 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
3079 | if (attr) | |
3080 | set_cu_language (DW_UNSND (attr), cu); | |
3081 | else | |
3082 | set_cu_language (language_minimal, cu); | |
3083 | ||
a6c727b2 DJ |
3084 | /* Similarly, if we do not read the producer, we can not apply |
3085 | producer-specific interpretation. */ | |
3086 | attr = dwarf2_attr (cu->dies, DW_AT_producer, cu); | |
3087 | if (attr) | |
3088 | cu->producer = DW_STRING (attr); | |
3089 | ||
348e048f DE |
3090 | /* Link this CU into read_in_chain. */ |
3091 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
3092 | dwarf2_per_objfile->read_in_chain = per_cu; | |
3093 | ||
10b3939b | 3094 | do_cleanups (back_to); |
e142c38c | 3095 | |
10b3939b DJ |
3096 | /* We've successfully allocated this compilation unit. Let our caller |
3097 | clean it up when finished with it. */ | |
3098 | discard_cleanups (free_cu_cleanup); | |
10b3939b DJ |
3099 | } |
3100 | ||
3101 | /* Generate full symbol information for PST and CU, whose DIEs have | |
3102 | already been loaded into memory. */ | |
3103 | ||
3104 | static void | |
3105 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
3106 | { | |
3107 | struct partial_symtab *pst = per_cu->psymtab; | |
3108 | struct dwarf2_cu *cu = per_cu->cu; | |
3109 | struct objfile *objfile = pst->objfile; | |
10b3939b DJ |
3110 | CORE_ADDR lowpc, highpc; |
3111 | struct symtab *symtab; | |
3112 | struct cleanup *back_to; | |
10b3939b DJ |
3113 | CORE_ADDR baseaddr; |
3114 | ||
3115 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3116 | ||
10b3939b DJ |
3117 | buildsym_init (); |
3118 | back_to = make_cleanup (really_free_pendings, NULL); | |
3119 | ||
3120 | cu->list_in_scope = &file_symbols; | |
c906108c | 3121 | |
d85a05f0 | 3122 | dwarf2_find_base_address (cu->dies, cu); |
0d53c4c4 | 3123 | |
c906108c | 3124 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 3125 | process_die (cu->dies, cu); |
c906108c | 3126 | |
fae299cd DC |
3127 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
3128 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
3129 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 3130 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 3131 | |
613e1657 | 3132 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
3133 | |
3134 | /* Set symtab language to language from DW_AT_language. | |
3135 | If the compilation is from a C file generated by language preprocessors, | |
3136 | do not set the language if it was already deduced by start_subfile. */ | |
3137 | if (symtab != NULL | |
10b3939b | 3138 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 3139 | { |
10b3939b | 3140 | symtab->language = cu->language; |
c906108c SS |
3141 | } |
3142 | pst->symtab = symtab; | |
3143 | pst->readin = 1; | |
c906108c SS |
3144 | |
3145 | do_cleanups (back_to); | |
3146 | } | |
3147 | ||
3148 | /* Process a die and its children. */ | |
3149 | ||
3150 | static void | |
e7c27a73 | 3151 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
3152 | { |
3153 | switch (die->tag) | |
3154 | { | |
3155 | case DW_TAG_padding: | |
3156 | break; | |
3157 | case DW_TAG_compile_unit: | |
e7c27a73 | 3158 | read_file_scope (die, cu); |
c906108c | 3159 | break; |
348e048f DE |
3160 | case DW_TAG_type_unit: |
3161 | read_type_unit_scope (die, cu); | |
3162 | break; | |
c906108c | 3163 | case DW_TAG_subprogram: |
c906108c | 3164 | case DW_TAG_inlined_subroutine: |
edb3359d | 3165 | read_func_scope (die, cu); |
c906108c SS |
3166 | break; |
3167 | case DW_TAG_lexical_block: | |
14898363 L |
3168 | case DW_TAG_try_block: |
3169 | case DW_TAG_catch_block: | |
e7c27a73 | 3170 | read_lexical_block_scope (die, cu); |
c906108c SS |
3171 | break; |
3172 | case DW_TAG_class_type: | |
680b30c7 | 3173 | case DW_TAG_interface_type: |
c906108c SS |
3174 | case DW_TAG_structure_type: |
3175 | case DW_TAG_union_type: | |
134d01f1 | 3176 | process_structure_scope (die, cu); |
c906108c SS |
3177 | break; |
3178 | case DW_TAG_enumeration_type: | |
134d01f1 | 3179 | process_enumeration_scope (die, cu); |
c906108c | 3180 | break; |
134d01f1 | 3181 | |
f792889a DJ |
3182 | /* These dies have a type, but processing them does not create |
3183 | a symbol or recurse to process the children. Therefore we can | |
3184 | read them on-demand through read_type_die. */ | |
c906108c | 3185 | case DW_TAG_subroutine_type: |
72019c9c | 3186 | case DW_TAG_set_type: |
c906108c | 3187 | case DW_TAG_array_type: |
c906108c | 3188 | case DW_TAG_pointer_type: |
c906108c | 3189 | case DW_TAG_ptr_to_member_type: |
c906108c | 3190 | case DW_TAG_reference_type: |
c906108c | 3191 | case DW_TAG_string_type: |
c906108c | 3192 | break; |
134d01f1 | 3193 | |
c906108c | 3194 | case DW_TAG_base_type: |
a02abb62 | 3195 | case DW_TAG_subrange_type: |
cb249c71 | 3196 | case DW_TAG_typedef: |
90e7c2c5 PM |
3197 | case DW_TAG_const_type: |
3198 | case DW_TAG_volatile_type: | |
134d01f1 DJ |
3199 | /* Add a typedef symbol for the type definition, if it has a |
3200 | DW_AT_name. */ | |
f792889a | 3201 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 3202 | break; |
c906108c | 3203 | case DW_TAG_common_block: |
e7c27a73 | 3204 | read_common_block (die, cu); |
c906108c SS |
3205 | break; |
3206 | case DW_TAG_common_inclusion: | |
3207 | break; | |
d9fa45fe | 3208 | case DW_TAG_namespace: |
63d06c5c | 3209 | processing_has_namespace_info = 1; |
e7c27a73 | 3210 | read_namespace (die, cu); |
d9fa45fe | 3211 | break; |
5d7cb8df JK |
3212 | case DW_TAG_module: |
3213 | read_module (die, cu); | |
3214 | break; | |
d9fa45fe DC |
3215 | case DW_TAG_imported_declaration: |
3216 | case DW_TAG_imported_module: | |
63d06c5c | 3217 | processing_has_namespace_info = 1; |
27aa8d6a SW |
3218 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
3219 | || cu->language != language_fortran)) | |
3220 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
3221 | dwarf_tag_name (die->tag)); | |
3222 | read_import_statement (die, cu); | |
d9fa45fe | 3223 | break; |
c906108c | 3224 | default: |
e7c27a73 | 3225 | new_symbol (die, NULL, cu); |
c906108c SS |
3226 | break; |
3227 | } | |
3228 | } | |
3229 | ||
94af9270 KS |
3230 | /* A helper function for dwarf2_compute_name which determines whether DIE |
3231 | needs to have the name of the scope prepended to the name listed in the | |
3232 | die. */ | |
3233 | ||
3234 | static int | |
3235 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
3236 | { | |
1c809c68 TT |
3237 | struct attribute *attr; |
3238 | ||
94af9270 KS |
3239 | switch (die->tag) |
3240 | { | |
3241 | case DW_TAG_namespace: | |
3242 | case DW_TAG_typedef: | |
3243 | case DW_TAG_class_type: | |
3244 | case DW_TAG_interface_type: | |
3245 | case DW_TAG_structure_type: | |
3246 | case DW_TAG_union_type: | |
3247 | case DW_TAG_enumeration_type: | |
3248 | case DW_TAG_enumerator: | |
3249 | case DW_TAG_subprogram: | |
3250 | case DW_TAG_member: | |
3251 | return 1; | |
3252 | ||
3253 | case DW_TAG_variable: | |
3254 | /* We only need to prefix "globally" visible variables. These include | |
3255 | any variable marked with DW_AT_external or any variable that | |
3256 | lives in a namespace. [Variables in anonymous namespaces | |
3257 | require prefixing, but they are not DW_AT_external.] */ | |
3258 | ||
3259 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
3260 | { | |
3261 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 3262 | |
94af9270 KS |
3263 | return die_needs_namespace (die_specification (die, &spec_cu), |
3264 | spec_cu); | |
3265 | } | |
3266 | ||
1c809c68 TT |
3267 | attr = dwarf2_attr (die, DW_AT_external, cu); |
3268 | if (attr == NULL && die->parent->tag != DW_TAG_namespace) | |
3269 | return 0; | |
3270 | /* A variable in a lexical block of some kind does not need a | |
3271 | namespace, even though in C++ such variables may be external | |
3272 | and have a mangled name. */ | |
3273 | if (die->parent->tag == DW_TAG_lexical_block | |
3274 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
3275 | || die->parent->tag == DW_TAG_catch_block |
3276 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
3277 | return 0; |
3278 | return 1; | |
94af9270 KS |
3279 | |
3280 | default: | |
3281 | return 0; | |
3282 | } | |
3283 | } | |
3284 | ||
3285 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, | |
3286 | compute the physname for the object, which include a method's | |
3287 | formal parameters (C++/Java) and return type (Java). | |
3288 | ||
af6b7be1 JB |
3289 | For Ada, return the DIE's linkage name rather than the fully qualified |
3290 | name. PHYSNAME is ignored.. | |
3291 | ||
94af9270 KS |
3292 | The result is allocated on the objfile_obstack and canonicalized. */ |
3293 | ||
3294 | static const char * | |
3295 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
3296 | int physname) | |
3297 | { | |
3298 | if (name == NULL) | |
3299 | name = dwarf2_name (die, cu); | |
3300 | ||
3301 | /* These are the only languages we know how to qualify names in. */ | |
3302 | if (name != NULL | |
3303 | && (cu->language == language_cplus || cu->language == language_java)) | |
3304 | { | |
3305 | if (die_needs_namespace (die, cu)) | |
3306 | { | |
3307 | long length; | |
3308 | char *prefix; | |
3309 | struct ui_file *buf; | |
3310 | ||
3311 | prefix = determine_prefix (die, cu); | |
3312 | buf = mem_fileopen (); | |
3313 | if (*prefix != '\0') | |
3314 | { | |
3315 | char *prefixed_name = typename_concat (NULL, prefix, name, cu); | |
9a619af0 | 3316 | |
94af9270 KS |
3317 | fputs_unfiltered (prefixed_name, buf); |
3318 | xfree (prefixed_name); | |
3319 | } | |
3320 | else | |
3321 | fputs_unfiltered (name ? name : "", buf); | |
3322 | ||
3323 | /* For Java and C++ methods, append formal parameter type | |
3324 | information, if PHYSNAME. */ | |
3325 | ||
3326 | if (physname && die->tag == DW_TAG_subprogram | |
3327 | && (cu->language == language_cplus | |
3328 | || cu->language == language_java)) | |
3329 | { | |
3330 | struct type *type = read_type_die (die, cu); | |
3331 | ||
3332 | c_type_print_args (type, buf, 0, cu->language); | |
3333 | ||
3334 | if (cu->language == language_java) | |
3335 | { | |
3336 | /* For java, we must append the return type to method | |
3337 | names. */ | |
3338 | if (die->tag == DW_TAG_subprogram) | |
3339 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
3340 | 0, 0); | |
3341 | } | |
3342 | else if (cu->language == language_cplus) | |
3343 | { | |
3344 | if (TYPE_NFIELDS (type) > 0 | |
3345 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
3346 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)))) | |
3347 | fputs_unfiltered (" const", buf); | |
3348 | } | |
3349 | } | |
3350 | ||
3351 | name = ui_file_obsavestring (buf, &cu->objfile->objfile_obstack, | |
3352 | &length); | |
3353 | ui_file_delete (buf); | |
3354 | ||
3355 | if (cu->language == language_cplus) | |
3356 | { | |
3357 | char *cname | |
3358 | = dwarf2_canonicalize_name (name, cu, | |
3359 | &cu->objfile->objfile_obstack); | |
9a619af0 | 3360 | |
94af9270 KS |
3361 | if (cname != NULL) |
3362 | name = cname; | |
3363 | } | |
3364 | } | |
3365 | } | |
af6b7be1 JB |
3366 | else if (cu->language == language_ada) |
3367 | { | |
3368 | /* For Ada unit, we prefer the linkage name over the name, as | |
3369 | the former contains the exported name, which the user expects | |
3370 | to be able to reference. Ideally, we want the user to be able | |
3371 | to reference this entity using either natural or linkage name, | |
3372 | but we haven't started looking at this enhancement yet. */ | |
3373 | struct attribute *attr; | |
3374 | ||
31ef98ae TT |
3375 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); |
3376 | if (attr == NULL) | |
3377 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
af6b7be1 JB |
3378 | if (attr && DW_STRING (attr)) |
3379 | name = DW_STRING (attr); | |
3380 | } | |
94af9270 KS |
3381 | |
3382 | return name; | |
3383 | } | |
3384 | ||
0114d602 DJ |
3385 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
3386 | If scope qualifiers are appropriate they will be added. The result | |
3387 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
3388 | not have a name. NAME may either be from a previous call to |
3389 | dwarf2_name or NULL. | |
3390 | ||
3391 | The output string will be canonicalized (if C++/Java). */ | |
0114d602 DJ |
3392 | |
3393 | static const char * | |
94af9270 | 3394 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 3395 | { |
94af9270 KS |
3396 | return dwarf2_compute_name (name, die, cu, 0); |
3397 | } | |
0114d602 | 3398 | |
94af9270 KS |
3399 | /* Construct a physname for the given DIE in CU. NAME may either be |
3400 | from a previous call to dwarf2_name or NULL. The result will be | |
3401 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
3402 | name. | |
0114d602 | 3403 | |
94af9270 | 3404 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 3405 | |
94af9270 KS |
3406 | static const char * |
3407 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
3408 | { | |
3409 | return dwarf2_compute_name (name, die, cu, 1); | |
0114d602 DJ |
3410 | } |
3411 | ||
27aa8d6a SW |
3412 | /* Read the import statement specified by the given die and record it. */ |
3413 | ||
3414 | static void | |
3415 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
3416 | { | |
3417 | struct attribute *import_attr; | |
3418 | struct die_info *imported_die; | |
de4affc9 | 3419 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 3420 | const char *imported_name; |
794684b6 | 3421 | const char *imported_name_prefix; |
13387711 SW |
3422 | const char *canonical_name; |
3423 | const char *import_alias; | |
3424 | const char *imported_declaration = NULL; | |
794684b6 | 3425 | const char *import_prefix; |
13387711 SW |
3426 | |
3427 | char *temp; | |
27aa8d6a SW |
3428 | |
3429 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
3430 | if (import_attr == NULL) | |
3431 | { | |
3432 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
3433 | dwarf_tag_name (die->tag)); | |
3434 | return; | |
3435 | } | |
3436 | ||
de4affc9 CC |
3437 | imported_cu = cu; |
3438 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
3439 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
3440 | if (imported_name == NULL) |
3441 | { | |
3442 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
3443 | ||
3444 | The import in the following code: | |
3445 | namespace A | |
3446 | { | |
3447 | typedef int B; | |
3448 | } | |
3449 | ||
3450 | int main () | |
3451 | { | |
3452 | using A::B; | |
3453 | B b; | |
3454 | return b; | |
3455 | } | |
3456 | ||
3457 | ... | |
3458 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
3459 | <52> DW_AT_decl_file : 1 | |
3460 | <53> DW_AT_decl_line : 6 | |
3461 | <54> DW_AT_import : <0x75> | |
3462 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
3463 | <59> DW_AT_name : B | |
3464 | <5b> DW_AT_decl_file : 1 | |
3465 | <5c> DW_AT_decl_line : 2 | |
3466 | <5d> DW_AT_type : <0x6e> | |
3467 | ... | |
3468 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
3469 | <76> DW_AT_byte_size : 4 | |
3470 | <77> DW_AT_encoding : 5 (signed) | |
3471 | ||
3472 | imports the wrong die ( 0x75 instead of 0x58 ). | |
3473 | This case will be ignored until the gcc bug is fixed. */ | |
3474 | return; | |
3475 | } | |
3476 | ||
82856980 SW |
3477 | /* Figure out the local name after import. */ |
3478 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 3479 | |
794684b6 SW |
3480 | /* Figure out where the statement is being imported to. */ |
3481 | import_prefix = determine_prefix (die, cu); | |
3482 | ||
3483 | /* Figure out what the scope of the imported die is and prepend it | |
3484 | to the name of the imported die. */ | |
de4affc9 | 3485 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 3486 | |
13387711 | 3487 | if (imported_die->tag != DW_TAG_namespace) |
794684b6 | 3488 | { |
13387711 SW |
3489 | imported_declaration = imported_name; |
3490 | canonical_name = imported_name_prefix; | |
794684b6 | 3491 | } |
13387711 | 3492 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 3493 | { |
13387711 SW |
3494 | temp = alloca (strlen (imported_name_prefix) |
3495 | + 2 + strlen (imported_name) + 1); | |
3496 | strcpy (temp, imported_name_prefix); | |
3497 | strcat (temp, "::"); | |
3498 | strcat (temp, imported_name); | |
3499 | canonical_name = temp; | |
794684b6 | 3500 | } |
13387711 SW |
3501 | else |
3502 | canonical_name = imported_name; | |
794684b6 | 3503 | |
c0cc3a76 SW |
3504 | cp_add_using_directive (import_prefix, |
3505 | canonical_name, | |
3506 | import_alias, | |
13387711 | 3507 | imported_declaration, |
c0cc3a76 | 3508 | &cu->objfile->objfile_obstack); |
27aa8d6a SW |
3509 | } |
3510 | ||
5fb290d7 | 3511 | static void |
e142c38c | 3512 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 3513 | { |
e142c38c | 3514 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
3515 | } |
3516 | ||
cb1df416 DJ |
3517 | static void |
3518 | free_cu_line_header (void *arg) | |
3519 | { | |
3520 | struct dwarf2_cu *cu = arg; | |
3521 | ||
3522 | free_line_header (cu->line_header); | |
3523 | cu->line_header = NULL; | |
3524 | } | |
3525 | ||
c906108c | 3526 | static void |
e7c27a73 | 3527 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3528 | { |
e7c27a73 | 3529 | struct objfile *objfile = cu->objfile; |
debd256d | 3530 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 3531 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
3532 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
3533 | struct attribute *attr; | |
e1024ff1 | 3534 | char *name = NULL; |
c906108c SS |
3535 | char *comp_dir = NULL; |
3536 | struct die_info *child_die; | |
3537 | bfd *abfd = objfile->obfd; | |
debd256d | 3538 | struct line_header *line_header = 0; |
e142c38c DJ |
3539 | CORE_ADDR baseaddr; |
3540 | ||
3541 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 3542 | |
fae299cd | 3543 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
3544 | |
3545 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
3546 | from finish_block. */ | |
2acceee2 | 3547 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
3548 | lowpc = highpc; |
3549 | lowpc += baseaddr; | |
3550 | highpc += baseaddr; | |
3551 | ||
39cbfefa DJ |
3552 | /* Find the filename. Do not use dwarf2_name here, since the filename |
3553 | is not a source language identifier. */ | |
e142c38c | 3554 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3555 | if (attr) |
3556 | { | |
3557 | name = DW_STRING (attr); | |
3558 | } | |
e1024ff1 | 3559 | |
e142c38c | 3560 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c | 3561 | if (attr) |
e1024ff1 DJ |
3562 | comp_dir = DW_STRING (attr); |
3563 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
c906108c | 3564 | { |
e1024ff1 DJ |
3565 | comp_dir = ldirname (name); |
3566 | if (comp_dir != NULL) | |
3567 | make_cleanup (xfree, comp_dir); | |
3568 | } | |
3569 | if (comp_dir != NULL) | |
3570 | { | |
3571 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
3572 | directory, get rid of it. */ | |
3573 | char *cp = strchr (comp_dir, ':'); | |
c906108c | 3574 | |
e1024ff1 DJ |
3575 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') |
3576 | comp_dir = cp + 1; | |
c906108c SS |
3577 | } |
3578 | ||
e1024ff1 DJ |
3579 | if (name == NULL) |
3580 | name = "<unknown>"; | |
3581 | ||
e142c38c | 3582 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
3583 | if (attr) |
3584 | { | |
e142c38c | 3585 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
3586 | } |
3587 | ||
b0f35d58 DL |
3588 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
3589 | if (attr) | |
3590 | cu->producer = DW_STRING (attr); | |
303b6f5d | 3591 | |
c906108c SS |
3592 | /* We assume that we're processing GCC output. */ |
3593 | processing_gcc_compilation = 2; | |
c906108c | 3594 | |
df8a16a1 DJ |
3595 | processing_has_namespace_info = 0; |
3596 | ||
c906108c SS |
3597 | start_symtab (name, comp_dir, lowpc); |
3598 | record_debugformat ("DWARF 2"); | |
303b6f5d | 3599 | record_producer (cu->producer); |
c906108c | 3600 | |
e142c38c | 3601 | initialize_cu_func_list (cu); |
c906108c | 3602 | |
cb1df416 DJ |
3603 | /* Decode line number information if present. We do this before |
3604 | processing child DIEs, so that the line header table is available | |
3605 | for DW_AT_decl_file. */ | |
e142c38c | 3606 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
3607 | if (attr) |
3608 | { | |
debd256d | 3609 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 3610 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
3611 | if (line_header) |
3612 | { | |
cb1df416 DJ |
3613 | cu->line_header = line_header; |
3614 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 3615 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 3616 | } |
5fb290d7 | 3617 | } |
debd256d | 3618 | |
cb1df416 DJ |
3619 | /* Process all dies in compilation unit. */ |
3620 | if (die->child != NULL) | |
3621 | { | |
3622 | child_die = die->child; | |
3623 | while (child_die && child_die->tag) | |
3624 | { | |
3625 | process_die (child_die, cu); | |
3626 | child_die = sibling_die (child_die); | |
3627 | } | |
3628 | } | |
3629 | ||
2e276125 JB |
3630 | /* Decode macro information, if present. Dwarf 2 macro information |
3631 | refers to information in the line number info statement program | |
3632 | header, so we can only read it if we've read the header | |
3633 | successfully. */ | |
e142c38c | 3634 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 3635 | if (attr && line_header) |
2e276125 JB |
3636 | { |
3637 | unsigned int macro_offset = DW_UNSND (attr); | |
9a619af0 | 3638 | |
2e276125 | 3639 | dwarf_decode_macros (line_header, macro_offset, |
e7c27a73 | 3640 | comp_dir, abfd, cu); |
2e276125 | 3641 | } |
debd256d | 3642 | do_cleanups (back_to); |
5fb290d7 DJ |
3643 | } |
3644 | ||
348e048f DE |
3645 | /* For TUs we want to skip the first top level sibling if it's not the |
3646 | actual type being defined by this TU. In this case the first top | |
3647 | level sibling is there to provide context only. */ | |
3648 | ||
3649 | static void | |
3650 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
3651 | { | |
3652 | struct objfile *objfile = cu->objfile; | |
3653 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
3654 | CORE_ADDR lowpc; | |
3655 | struct attribute *attr; | |
3656 | char *name = NULL; | |
3657 | char *comp_dir = NULL; | |
3658 | struct die_info *child_die; | |
3659 | bfd *abfd = objfile->obfd; | |
348e048f DE |
3660 | |
3661 | /* start_symtab needs a low pc, but we don't really have one. | |
3662 | Do what read_file_scope would do in the absence of such info. */ | |
3663 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3664 | ||
3665 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
3666 | is not a source language identifier. */ | |
3667 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
3668 | if (attr) | |
3669 | name = DW_STRING (attr); | |
3670 | ||
3671 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
3672 | if (attr) | |
3673 | comp_dir = DW_STRING (attr); | |
3674 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
3675 | { | |
3676 | comp_dir = ldirname (name); | |
3677 | if (comp_dir != NULL) | |
3678 | make_cleanup (xfree, comp_dir); | |
3679 | } | |
3680 | ||
3681 | if (name == NULL) | |
3682 | name = "<unknown>"; | |
3683 | ||
3684 | attr = dwarf2_attr (die, DW_AT_language, cu); | |
3685 | if (attr) | |
3686 | set_cu_language (DW_UNSND (attr), cu); | |
3687 | ||
3688 | /* This isn't technically needed today. It is done for symmetry | |
3689 | with read_file_scope. */ | |
3690 | attr = dwarf2_attr (die, DW_AT_producer, cu); | |
3691 | if (attr) | |
3692 | cu->producer = DW_STRING (attr); | |
3693 | ||
3694 | /* We assume that we're processing GCC output. */ | |
3695 | processing_gcc_compilation = 2; | |
3696 | ||
3697 | processing_has_namespace_info = 0; | |
3698 | ||
3699 | start_symtab (name, comp_dir, lowpc); | |
3700 | record_debugformat ("DWARF 2"); | |
3701 | record_producer (cu->producer); | |
3702 | ||
3703 | /* Process the dies in the type unit. */ | |
3704 | if (die->child == NULL) | |
3705 | { | |
3706 | dump_die_for_error (die); | |
3707 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
3708 | bfd_get_filename (abfd)); | |
3709 | } | |
3710 | ||
3711 | child_die = die->child; | |
3712 | ||
3713 | while (child_die && child_die->tag) | |
3714 | { | |
3715 | process_die (child_die, cu); | |
3716 | ||
3717 | child_die = sibling_die (child_die); | |
3718 | } | |
3719 | ||
3720 | do_cleanups (back_to); | |
3721 | } | |
3722 | ||
5fb290d7 | 3723 | static void |
e142c38c DJ |
3724 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
3725 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
3726 | { |
3727 | struct function_range *thisfn; | |
3728 | ||
3729 | thisfn = (struct function_range *) | |
7b5a2f43 | 3730 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
3731 | thisfn->name = name; |
3732 | thisfn->lowpc = lowpc; | |
3733 | thisfn->highpc = highpc; | |
3734 | thisfn->seen_line = 0; | |
3735 | thisfn->next = NULL; | |
3736 | ||
e142c38c DJ |
3737 | if (cu->last_fn == NULL) |
3738 | cu->first_fn = thisfn; | |
5fb290d7 | 3739 | else |
e142c38c | 3740 | cu->last_fn->next = thisfn; |
5fb290d7 | 3741 | |
e142c38c | 3742 | cu->last_fn = thisfn; |
c906108c SS |
3743 | } |
3744 | ||
d389af10 JK |
3745 | /* qsort helper for inherit_abstract_dies. */ |
3746 | ||
3747 | static int | |
3748 | unsigned_int_compar (const void *ap, const void *bp) | |
3749 | { | |
3750 | unsigned int a = *(unsigned int *) ap; | |
3751 | unsigned int b = *(unsigned int *) bp; | |
3752 | ||
3753 | return (a > b) - (b > a); | |
3754 | } | |
3755 | ||
3756 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
3757 | Inherit only the children of the DW_AT_abstract_origin DIE not being already | |
3758 | referenced by DW_AT_abstract_origin from the children of the current DIE. */ | |
3759 | ||
3760 | static void | |
3761 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
3762 | { | |
3763 | struct die_info *child_die; | |
3764 | unsigned die_children_count; | |
3765 | /* CU offsets which were referenced by children of the current DIE. */ | |
3766 | unsigned *offsets; | |
3767 | unsigned *offsets_end, *offsetp; | |
3768 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ | |
3769 | struct die_info *origin_die; | |
3770 | /* Iterator of the ORIGIN_DIE children. */ | |
3771 | struct die_info *origin_child_die; | |
3772 | struct cleanup *cleanups; | |
3773 | struct attribute *attr; | |
3774 | ||
3775 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
3776 | if (!attr) | |
3777 | return; | |
3778 | ||
3779 | origin_die = follow_die_ref (die, attr, &cu); | |
edb3359d DJ |
3780 | if (die->tag != origin_die->tag |
3781 | && !(die->tag == DW_TAG_inlined_subroutine | |
3782 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
3783 | complaint (&symfile_complaints, |
3784 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
3785 | die->offset, origin_die->offset); | |
3786 | ||
3787 | child_die = die->child; | |
3788 | die_children_count = 0; | |
3789 | while (child_die && child_die->tag) | |
3790 | { | |
3791 | child_die = sibling_die (child_die); | |
3792 | die_children_count++; | |
3793 | } | |
3794 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
3795 | cleanups = make_cleanup (xfree, offsets); | |
3796 | ||
3797 | offsets_end = offsets; | |
3798 | child_die = die->child; | |
3799 | while (child_die && child_die->tag) | |
3800 | { | |
c38f313d DJ |
3801 | /* For each CHILD_DIE, find the corresponding child of |
3802 | ORIGIN_DIE. If there is more than one layer of | |
3803 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
3804 | but GCC versions at least through 4.4 generate this (GCC PR | |
3805 | 40573). */ | |
3806 | struct die_info *child_origin_die = child_die; | |
9a619af0 | 3807 | |
c38f313d DJ |
3808 | while (1) |
3809 | { | |
3810 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, cu); | |
3811 | if (attr == NULL) | |
3812 | break; | |
3813 | child_origin_die = follow_die_ref (child_origin_die, attr, &cu); | |
3814 | } | |
3815 | ||
d389af10 JK |
3816 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
3817 | counterpart may exist. */ | |
c38f313d | 3818 | if (child_origin_die != child_die) |
d389af10 | 3819 | { |
edb3359d DJ |
3820 | if (child_die->tag != child_origin_die->tag |
3821 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
3822 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
3823 | complaint (&symfile_complaints, |
3824 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
3825 | "different tags"), child_die->offset, | |
3826 | child_origin_die->offset); | |
c38f313d DJ |
3827 | if (child_origin_die->parent != origin_die) |
3828 | complaint (&symfile_complaints, | |
3829 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
3830 | "different parents"), child_die->offset, | |
3831 | child_origin_die->offset); | |
3832 | else | |
3833 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
3834 | } |
3835 | child_die = sibling_die (child_die); | |
3836 | } | |
3837 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
3838 | unsigned_int_compar); | |
3839 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
3840 | if (offsetp[-1] == *offsetp) | |
3841 | complaint (&symfile_complaints, _("Multiple children of DIE 0x%x refer " | |
3842 | "to DIE 0x%x as their abstract origin"), | |
3843 | die->offset, *offsetp); | |
3844 | ||
3845 | offsetp = offsets; | |
3846 | origin_child_die = origin_die->child; | |
3847 | while (origin_child_die && origin_child_die->tag) | |
3848 | { | |
3849 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
3850 | while (offsetp < offsets_end && *offsetp < origin_child_die->offset) | |
3851 | offsetp++; | |
3852 | if (offsetp >= offsets_end || *offsetp > origin_child_die->offset) | |
3853 | { | |
3854 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
3855 | process_die (origin_child_die, cu); | |
3856 | } | |
3857 | origin_child_die = sibling_die (origin_child_die); | |
3858 | } | |
3859 | ||
3860 | do_cleanups (cleanups); | |
3861 | } | |
3862 | ||
c906108c | 3863 | static void |
e7c27a73 | 3864 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3865 | { |
e7c27a73 | 3866 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 3867 | struct context_stack *new; |
c906108c SS |
3868 | CORE_ADDR lowpc; |
3869 | CORE_ADDR highpc; | |
3870 | struct die_info *child_die; | |
edb3359d | 3871 | struct attribute *attr, *call_line, *call_file; |
c906108c | 3872 | char *name; |
e142c38c | 3873 | CORE_ADDR baseaddr; |
801e3a5b | 3874 | struct block *block; |
edb3359d DJ |
3875 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
3876 | ||
3877 | if (inlined_func) | |
3878 | { | |
3879 | /* If we do not have call site information, we can't show the | |
3880 | caller of this inlined function. That's too confusing, so | |
3881 | only use the scope for local variables. */ | |
3882 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
3883 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
3884 | if (call_line == NULL || call_file == NULL) | |
3885 | { | |
3886 | read_lexical_block_scope (die, cu); | |
3887 | return; | |
3888 | } | |
3889 | } | |
c906108c | 3890 | |
e142c38c DJ |
3891 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
3892 | ||
94af9270 | 3893 | name = dwarf2_name (die, cu); |
c906108c | 3894 | |
e8d05480 JB |
3895 | /* Ignore functions with missing or empty names. These are actually |
3896 | illegal according to the DWARF standard. */ | |
3897 | if (name == NULL) | |
3898 | { | |
3899 | complaint (&symfile_complaints, | |
3900 | _("missing name for subprogram DIE at %d"), die->offset); | |
3901 | return; | |
3902 | } | |
3903 | ||
3904 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3905 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
3906 | { | |
ae4d0c03 PM |
3907 | attr = dwarf2_attr (die, DW_AT_external, cu); |
3908 | if (!attr || !DW_UNSND (attr)) | |
3909 | complaint (&symfile_complaints, | |
3910 | _("cannot get low and high bounds for subprogram DIE at %d"), | |
3911 | die->offset); | |
e8d05480 JB |
3912 | return; |
3913 | } | |
c906108c SS |
3914 | |
3915 | lowpc += baseaddr; | |
3916 | highpc += baseaddr; | |
3917 | ||
5fb290d7 | 3918 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 3919 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 3920 | |
c906108c | 3921 | new = push_context (0, lowpc); |
f792889a | 3922 | new->name = new_symbol (die, read_type_die (die, cu), cu); |
4c2df51b | 3923 | |
4cecd739 DJ |
3924 | /* If there is a location expression for DW_AT_frame_base, record |
3925 | it. */ | |
e142c38c | 3926 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 3927 | if (attr) |
c034e007 AC |
3928 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
3929 | expression is being recorded directly in the function's symbol | |
3930 | and not in a separate frame-base object. I guess this hack is | |
3931 | to avoid adding some sort of frame-base adjunct/annex to the | |
3932 | function's symbol :-(. The problem with doing this is that it | |
3933 | results in a function symbol with a location expression that | |
3934 | has nothing to do with the location of the function, ouch! The | |
3935 | relationship should be: a function's symbol has-a frame base; a | |
3936 | frame-base has-a location expression. */ | |
e7c27a73 | 3937 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 3938 | |
e142c38c | 3939 | cu->list_in_scope = &local_symbols; |
c906108c | 3940 | |
639d11d3 | 3941 | if (die->child != NULL) |
c906108c | 3942 | { |
639d11d3 | 3943 | child_die = die->child; |
c906108c SS |
3944 | while (child_die && child_die->tag) |
3945 | { | |
e7c27a73 | 3946 | process_die (child_die, cu); |
c906108c SS |
3947 | child_die = sibling_die (child_die); |
3948 | } | |
3949 | } | |
3950 | ||
d389af10 JK |
3951 | inherit_abstract_dies (die, cu); |
3952 | ||
4a811a97 UW |
3953 | /* If we have a DW_AT_specification, we might need to import using |
3954 | directives from the context of the specification DIE. See the | |
3955 | comment in determine_prefix. */ | |
3956 | if (cu->language == language_cplus | |
3957 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
3958 | { | |
3959 | struct dwarf2_cu *spec_cu = cu; | |
3960 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
3961 | ||
3962 | while (spec_die) | |
3963 | { | |
3964 | child_die = spec_die->child; | |
3965 | while (child_die && child_die->tag) | |
3966 | { | |
3967 | if (child_die->tag == DW_TAG_imported_module) | |
3968 | process_die (child_die, spec_cu); | |
3969 | child_die = sibling_die (child_die); | |
3970 | } | |
3971 | ||
3972 | /* In some cases, GCC generates specification DIEs that | |
3973 | themselves contain DW_AT_specification attributes. */ | |
3974 | spec_die = die_specification (spec_die, &spec_cu); | |
3975 | } | |
3976 | } | |
3977 | ||
c906108c SS |
3978 | new = pop_context (); |
3979 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
3980 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
3981 | lowpc, highpc, objfile); | |
3982 | ||
df8a16a1 DJ |
3983 | /* For C++, set the block's scope. */ |
3984 | if (cu->language == language_cplus) | |
3985 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, | |
0114d602 | 3986 | determine_prefix (die, cu), |
df8a16a1 DJ |
3987 | processing_has_namespace_info); |
3988 | ||
801e3a5b JB |
3989 | /* If we have address ranges, record them. */ |
3990 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
208d8187 JB |
3991 | |
3992 | /* In C++, we can have functions nested inside functions (e.g., when | |
3993 | a function declares a class that has methods). This means that | |
3994 | when we finish processing a function scope, we may need to go | |
3995 | back to building a containing block's symbol lists. */ | |
3996 | local_symbols = new->locals; | |
3997 | param_symbols = new->params; | |
27aa8d6a | 3998 | using_directives = new->using_directives; |
208d8187 | 3999 | |
921e78cf JB |
4000 | /* If we've finished processing a top-level function, subsequent |
4001 | symbols go in the file symbol list. */ | |
4002 | if (outermost_context_p ()) | |
e142c38c | 4003 | cu->list_in_scope = &file_symbols; |
c906108c SS |
4004 | } |
4005 | ||
4006 | /* Process all the DIES contained within a lexical block scope. Start | |
4007 | a new scope, process the dies, and then close the scope. */ | |
4008 | ||
4009 | static void | |
e7c27a73 | 4010 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4011 | { |
e7c27a73 | 4012 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 4013 | struct context_stack *new; |
c906108c SS |
4014 | CORE_ADDR lowpc, highpc; |
4015 | struct die_info *child_die; | |
e142c38c DJ |
4016 | CORE_ADDR baseaddr; |
4017 | ||
4018 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
4019 | |
4020 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
4021 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
4022 | as multiple lexical blocks? Handling children in a sane way would | |
4023 | be nasty. Might be easier to properly extend generic blocks to | |
4024 | describe ranges. */ | |
d85a05f0 | 4025 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
4026 | return; |
4027 | lowpc += baseaddr; | |
4028 | highpc += baseaddr; | |
4029 | ||
4030 | push_context (0, lowpc); | |
639d11d3 | 4031 | if (die->child != NULL) |
c906108c | 4032 | { |
639d11d3 | 4033 | child_die = die->child; |
c906108c SS |
4034 | while (child_die && child_die->tag) |
4035 | { | |
e7c27a73 | 4036 | process_die (child_die, cu); |
c906108c SS |
4037 | child_die = sibling_die (child_die); |
4038 | } | |
4039 | } | |
4040 | new = pop_context (); | |
4041 | ||
8540c487 | 4042 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 4043 | { |
801e3a5b JB |
4044 | struct block *block |
4045 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
4046 | highpc, objfile); | |
4047 | ||
4048 | /* Note that recording ranges after traversing children, as we | |
4049 | do here, means that recording a parent's ranges entails | |
4050 | walking across all its children's ranges as they appear in | |
4051 | the address map, which is quadratic behavior. | |
4052 | ||
4053 | It would be nicer to record the parent's ranges before | |
4054 | traversing its children, simply overriding whatever you find | |
4055 | there. But since we don't even decide whether to create a | |
4056 | block until after we've traversed its children, that's hard | |
4057 | to do. */ | |
4058 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
4059 | } |
4060 | local_symbols = new->locals; | |
27aa8d6a | 4061 | using_directives = new->using_directives; |
c906108c SS |
4062 | } |
4063 | ||
43039443 | 4064 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
4065 | Return 1 if the attributes are present and valid, otherwise, return 0. |
4066 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
4067 | |
4068 | static int | |
4069 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
4070 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
4071 | struct partial_symtab *ranges_pst) | |
43039443 JK |
4072 | { |
4073 | struct objfile *objfile = cu->objfile; | |
4074 | struct comp_unit_head *cu_header = &cu->header; | |
4075 | bfd *obfd = objfile->obfd; | |
4076 | unsigned int addr_size = cu_header->addr_size; | |
4077 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
4078 | /* Base address selection entry. */ | |
4079 | CORE_ADDR base; | |
4080 | int found_base; | |
4081 | unsigned int dummy; | |
4082 | gdb_byte *buffer; | |
4083 | CORE_ADDR marker; | |
4084 | int low_set; | |
4085 | CORE_ADDR low = 0; | |
4086 | CORE_ADDR high = 0; | |
ff013f42 | 4087 | CORE_ADDR baseaddr; |
43039443 | 4088 | |
d00adf39 DE |
4089 | found_base = cu->base_known; |
4090 | base = cu->base_address; | |
43039443 | 4091 | |
be391dca | 4092 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 4093 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
4094 | { |
4095 | complaint (&symfile_complaints, | |
4096 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
4097 | offset); | |
4098 | return 0; | |
4099 | } | |
dce234bc | 4100 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
4101 | |
4102 | /* Read in the largest possible address. */ | |
4103 | marker = read_address (obfd, buffer, cu, &dummy); | |
4104 | if ((marker & mask) == mask) | |
4105 | { | |
4106 | /* If we found the largest possible address, then | |
4107 | read the base address. */ | |
4108 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
4109 | buffer += 2 * addr_size; | |
4110 | offset += 2 * addr_size; | |
4111 | found_base = 1; | |
4112 | } | |
4113 | ||
4114 | low_set = 0; | |
4115 | ||
e7030f15 | 4116 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 4117 | |
43039443 JK |
4118 | while (1) |
4119 | { | |
4120 | CORE_ADDR range_beginning, range_end; | |
4121 | ||
4122 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
4123 | buffer += addr_size; | |
4124 | range_end = read_address (obfd, buffer, cu, &dummy); | |
4125 | buffer += addr_size; | |
4126 | offset += 2 * addr_size; | |
4127 | ||
4128 | /* An end of list marker is a pair of zero addresses. */ | |
4129 | if (range_beginning == 0 && range_end == 0) | |
4130 | /* Found the end of list entry. */ | |
4131 | break; | |
4132 | ||
4133 | /* Each base address selection entry is a pair of 2 values. | |
4134 | The first is the largest possible address, the second is | |
4135 | the base address. Check for a base address here. */ | |
4136 | if ((range_beginning & mask) == mask) | |
4137 | { | |
4138 | /* If we found the largest possible address, then | |
4139 | read the base address. */ | |
4140 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
4141 | found_base = 1; | |
4142 | continue; | |
4143 | } | |
4144 | ||
4145 | if (!found_base) | |
4146 | { | |
4147 | /* We have no valid base address for the ranges | |
4148 | data. */ | |
4149 | complaint (&symfile_complaints, | |
4150 | _("Invalid .debug_ranges data (no base address)")); | |
4151 | return 0; | |
4152 | } | |
4153 | ||
4154 | range_beginning += base; | |
4155 | range_end += base; | |
4156 | ||
ff013f42 JK |
4157 | if (ranges_pst != NULL && range_beginning < range_end) |
4158 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
4159 | range_beginning + baseaddr, range_end - 1 + baseaddr, | |
4160 | ranges_pst); | |
4161 | ||
43039443 JK |
4162 | /* FIXME: This is recording everything as a low-high |
4163 | segment of consecutive addresses. We should have a | |
4164 | data structure for discontiguous block ranges | |
4165 | instead. */ | |
4166 | if (! low_set) | |
4167 | { | |
4168 | low = range_beginning; | |
4169 | high = range_end; | |
4170 | low_set = 1; | |
4171 | } | |
4172 | else | |
4173 | { | |
4174 | if (range_beginning < low) | |
4175 | low = range_beginning; | |
4176 | if (range_end > high) | |
4177 | high = range_end; | |
4178 | } | |
4179 | } | |
4180 | ||
4181 | if (! low_set) | |
4182 | /* If the first entry is an end-of-list marker, the range | |
4183 | describes an empty scope, i.e. no instructions. */ | |
4184 | return 0; | |
4185 | ||
4186 | if (low_return) | |
4187 | *low_return = low; | |
4188 | if (high_return) | |
4189 | *high_return = high; | |
4190 | return 1; | |
4191 | } | |
4192 | ||
af34e669 DJ |
4193 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
4194 | are present and valid, otherwise, return 0. Return -1 if the range is | |
4195 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 4196 | static int |
af34e669 | 4197 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
4198 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
4199 | struct partial_symtab *pst) | |
c906108c SS |
4200 | { |
4201 | struct attribute *attr; | |
af34e669 DJ |
4202 | CORE_ADDR low = 0; |
4203 | CORE_ADDR high = 0; | |
4204 | int ret = 0; | |
c906108c | 4205 | |
e142c38c | 4206 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 4207 | if (attr) |
af34e669 DJ |
4208 | { |
4209 | high = DW_ADDR (attr); | |
e142c38c | 4210 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
4211 | if (attr) |
4212 | low = DW_ADDR (attr); | |
4213 | else | |
4214 | /* Found high w/o low attribute. */ | |
4215 | return 0; | |
4216 | ||
4217 | /* Found consecutive range of addresses. */ | |
4218 | ret = 1; | |
4219 | } | |
c906108c | 4220 | else |
af34e669 | 4221 | { |
e142c38c | 4222 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
4223 | if (attr != NULL) |
4224 | { | |
af34e669 | 4225 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 4226 | .debug_ranges section. */ |
d85a05f0 | 4227 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 4228 | return 0; |
43039443 | 4229 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
4230 | ret = -1; |
4231 | } | |
4232 | } | |
c906108c SS |
4233 | |
4234 | if (high < low) | |
4235 | return 0; | |
4236 | ||
4237 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
4238 | eliminate duplicate copies of functions and vtables and such. | |
4239 | The linker will arbitrarily choose one and discard the others. | |
4240 | The AT_*_pc values for such functions refer to local labels in | |
4241 | these sections. If the section from that file was discarded, the | |
4242 | labels are not in the output, so the relocs get a value of 0. | |
4243 | If this is a discarded function, mark the pc bounds as invalid, | |
4244 | so that GDB will ignore it. */ | |
72dca2f5 | 4245 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
4246 | return 0; |
4247 | ||
4248 | *lowpc = low; | |
4249 | *highpc = high; | |
af34e669 | 4250 | return ret; |
c906108c SS |
4251 | } |
4252 | ||
b084d499 JB |
4253 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
4254 | its low and high PC addresses. Do nothing if these addresses could not | |
4255 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
4256 | and HIGHPC to the high address if greater than HIGHPC. */ | |
4257 | ||
4258 | static void | |
4259 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
4260 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
4261 | struct dwarf2_cu *cu) | |
4262 | { | |
4263 | CORE_ADDR low, high; | |
4264 | struct die_info *child = die->child; | |
4265 | ||
d85a05f0 | 4266 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
4267 | { |
4268 | *lowpc = min (*lowpc, low); | |
4269 | *highpc = max (*highpc, high); | |
4270 | } | |
4271 | ||
4272 | /* If the language does not allow nested subprograms (either inside | |
4273 | subprograms or lexical blocks), we're done. */ | |
4274 | if (cu->language != language_ada) | |
4275 | return; | |
4276 | ||
4277 | /* Check all the children of the given DIE. If it contains nested | |
4278 | subprograms, then check their pc bounds. Likewise, we need to | |
4279 | check lexical blocks as well, as they may also contain subprogram | |
4280 | definitions. */ | |
4281 | while (child && child->tag) | |
4282 | { | |
4283 | if (child->tag == DW_TAG_subprogram | |
4284 | || child->tag == DW_TAG_lexical_block) | |
4285 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
4286 | child = sibling_die (child); | |
4287 | } | |
4288 | } | |
4289 | ||
fae299cd DC |
4290 | /* Get the low and high pc's represented by the scope DIE, and store |
4291 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
4292 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
4293 | ||
4294 | static void | |
4295 | get_scope_pc_bounds (struct die_info *die, | |
4296 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
4297 | struct dwarf2_cu *cu) | |
4298 | { | |
4299 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
4300 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
4301 | CORE_ADDR current_low, current_high; | |
4302 | ||
d85a05f0 | 4303 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
4304 | { |
4305 | best_low = current_low; | |
4306 | best_high = current_high; | |
4307 | } | |
4308 | else | |
4309 | { | |
4310 | struct die_info *child = die->child; | |
4311 | ||
4312 | while (child && child->tag) | |
4313 | { | |
4314 | switch (child->tag) { | |
4315 | case DW_TAG_subprogram: | |
b084d499 | 4316 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
4317 | break; |
4318 | case DW_TAG_namespace: | |
4319 | /* FIXME: carlton/2004-01-16: Should we do this for | |
4320 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
4321 | that current GCC's always emit the DIEs corresponding | |
4322 | to definitions of methods of classes as children of a | |
4323 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
4324 | the DIEs giving the declarations, which could be | |
4325 | anywhere). But I don't see any reason why the | |
4326 | standards says that they have to be there. */ | |
4327 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
4328 | ||
4329 | if (current_low != ((CORE_ADDR) -1)) | |
4330 | { | |
4331 | best_low = min (best_low, current_low); | |
4332 | best_high = max (best_high, current_high); | |
4333 | } | |
4334 | break; | |
4335 | default: | |
4336 | /* Ignore. */ | |
4337 | break; | |
4338 | } | |
4339 | ||
4340 | child = sibling_die (child); | |
4341 | } | |
4342 | } | |
4343 | ||
4344 | *lowpc = best_low; | |
4345 | *highpc = best_high; | |
4346 | } | |
4347 | ||
801e3a5b JB |
4348 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
4349 | in DIE. */ | |
4350 | static void | |
4351 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
4352 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
4353 | { | |
4354 | struct attribute *attr; | |
4355 | ||
4356 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
4357 | if (attr) | |
4358 | { | |
4359 | CORE_ADDR high = DW_ADDR (attr); | |
9a619af0 | 4360 | |
801e3a5b JB |
4361 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
4362 | if (attr) | |
4363 | { | |
4364 | CORE_ADDR low = DW_ADDR (attr); | |
9a619af0 | 4365 | |
801e3a5b JB |
4366 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
4367 | } | |
4368 | } | |
4369 | ||
4370 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
4371 | if (attr) | |
4372 | { | |
4373 | bfd *obfd = cu->objfile->obfd; | |
4374 | ||
4375 | /* The value of the DW_AT_ranges attribute is the offset of the | |
4376 | address range list in the .debug_ranges section. */ | |
4377 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 4378 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
4379 | |
4380 | /* For some target architectures, but not others, the | |
4381 | read_address function sign-extends the addresses it returns. | |
4382 | To recognize base address selection entries, we need a | |
4383 | mask. */ | |
4384 | unsigned int addr_size = cu->header.addr_size; | |
4385 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
4386 | ||
4387 | /* The base address, to which the next pair is relative. Note | |
4388 | that this 'base' is a DWARF concept: most entries in a range | |
4389 | list are relative, to reduce the number of relocs against the | |
4390 | debugging information. This is separate from this function's | |
4391 | 'baseaddr' argument, which GDB uses to relocate debugging | |
4392 | information from a shared library based on the address at | |
4393 | which the library was loaded. */ | |
d00adf39 DE |
4394 | CORE_ADDR base = cu->base_address; |
4395 | int base_known = cu->base_known; | |
801e3a5b | 4396 | |
be391dca | 4397 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 4398 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
4399 | { |
4400 | complaint (&symfile_complaints, | |
4401 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
4402 | offset); | |
4403 | return; | |
4404 | } | |
4405 | ||
4406 | for (;;) | |
4407 | { | |
4408 | unsigned int bytes_read; | |
4409 | CORE_ADDR start, end; | |
4410 | ||
4411 | start = read_address (obfd, buffer, cu, &bytes_read); | |
4412 | buffer += bytes_read; | |
4413 | end = read_address (obfd, buffer, cu, &bytes_read); | |
4414 | buffer += bytes_read; | |
4415 | ||
4416 | /* Did we find the end of the range list? */ | |
4417 | if (start == 0 && end == 0) | |
4418 | break; | |
4419 | ||
4420 | /* Did we find a base address selection entry? */ | |
4421 | else if ((start & base_select_mask) == base_select_mask) | |
4422 | { | |
4423 | base = end; | |
4424 | base_known = 1; | |
4425 | } | |
4426 | ||
4427 | /* We found an ordinary address range. */ | |
4428 | else | |
4429 | { | |
4430 | if (!base_known) | |
4431 | { | |
4432 | complaint (&symfile_complaints, | |
4433 | _("Invalid .debug_ranges data (no base address)")); | |
4434 | return; | |
4435 | } | |
4436 | ||
4437 | record_block_range (block, | |
4438 | baseaddr + base + start, | |
4439 | baseaddr + base + end - 1); | |
4440 | } | |
4441 | } | |
4442 | } | |
4443 | } | |
4444 | ||
c906108c SS |
4445 | /* Add an aggregate field to the field list. */ |
4446 | ||
4447 | static void | |
107d2387 | 4448 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
4449 | struct dwarf2_cu *cu) |
4450 | { | |
4451 | struct objfile *objfile = cu->objfile; | |
5e2b427d | 4452 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
4453 | struct nextfield *new_field; |
4454 | struct attribute *attr; | |
4455 | struct field *fp; | |
4456 | char *fieldname = ""; | |
4457 | ||
4458 | /* Allocate a new field list entry and link it in. */ | |
4459 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 4460 | make_cleanup (xfree, new_field); |
c906108c | 4461 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
4462 | |
4463 | if (die->tag == DW_TAG_inheritance) | |
4464 | { | |
4465 | new_field->next = fip->baseclasses; | |
4466 | fip->baseclasses = new_field; | |
4467 | } | |
4468 | else | |
4469 | { | |
4470 | new_field->next = fip->fields; | |
4471 | fip->fields = new_field; | |
4472 | } | |
c906108c SS |
4473 | fip->nfields++; |
4474 | ||
4475 | /* Handle accessibility and virtuality of field. | |
4476 | The default accessibility for members is public, the default | |
4477 | accessibility for inheritance is private. */ | |
4478 | if (die->tag != DW_TAG_inheritance) | |
4479 | new_field->accessibility = DW_ACCESS_public; | |
4480 | else | |
4481 | new_field->accessibility = DW_ACCESS_private; | |
4482 | new_field->virtuality = DW_VIRTUALITY_none; | |
4483 | ||
e142c38c | 4484 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
4485 | if (attr) |
4486 | new_field->accessibility = DW_UNSND (attr); | |
4487 | if (new_field->accessibility != DW_ACCESS_public) | |
4488 | fip->non_public_fields = 1; | |
e142c38c | 4489 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
4490 | if (attr) |
4491 | new_field->virtuality = DW_UNSND (attr); | |
4492 | ||
4493 | fp = &new_field->field; | |
a9a9bd0f | 4494 | |
e142c38c | 4495 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 4496 | { |
a9a9bd0f DC |
4497 | /* Data member other than a C++ static data member. */ |
4498 | ||
c906108c | 4499 | /* Get type of field. */ |
e7c27a73 | 4500 | fp->type = die_type (die, cu); |
c906108c | 4501 | |
d6a843b5 | 4502 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 4503 | |
c906108c | 4504 | /* Get bit size of field (zero if none). */ |
e142c38c | 4505 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
4506 | if (attr) |
4507 | { | |
4508 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
4509 | } | |
4510 | else | |
4511 | { | |
4512 | FIELD_BITSIZE (*fp) = 0; | |
4513 | } | |
4514 | ||
4515 | /* Get bit offset of field. */ | |
e142c38c | 4516 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
4517 | if (attr) |
4518 | { | |
d4b96c9a | 4519 | int byte_offset = 0; |
c6a0999f | 4520 | |
3690dd37 | 4521 | if (attr_form_is_section_offset (attr)) |
d4b96c9a | 4522 | dwarf2_complex_location_expr_complaint (); |
3690dd37 | 4523 | else if (attr_form_is_constant (attr)) |
c6a0999f | 4524 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
d4b96c9a | 4525 | else if (attr_form_is_block (attr)) |
c6a0999f | 4526 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
d4b96c9a JK |
4527 | else |
4528 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 4529 | |
d6a843b5 | 4530 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); |
c906108c | 4531 | } |
e142c38c | 4532 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
4533 | if (attr) |
4534 | { | |
5e2b427d | 4535 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
4536 | { |
4537 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
4538 | additional bit offset from the MSB of the containing |
4539 | anonymous object to the MSB of the field. We don't | |
4540 | have to do anything special since we don't need to | |
4541 | know the size of the anonymous object. */ | |
c906108c SS |
4542 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
4543 | } | |
4544 | else | |
4545 | { | |
4546 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
4547 | MSB of the anonymous object, subtract off the number of |
4548 | bits from the MSB of the field to the MSB of the | |
4549 | object, and then subtract off the number of bits of | |
4550 | the field itself. The result is the bit offset of | |
4551 | the LSB of the field. */ | |
c906108c SS |
4552 | int anonymous_size; |
4553 | int bit_offset = DW_UNSND (attr); | |
4554 | ||
e142c38c | 4555 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4556 | if (attr) |
4557 | { | |
4558 | /* The size of the anonymous object containing | |
4559 | the bit field is explicit, so use the | |
4560 | indicated size (in bytes). */ | |
4561 | anonymous_size = DW_UNSND (attr); | |
4562 | } | |
4563 | else | |
4564 | { | |
4565 | /* The size of the anonymous object containing | |
4566 | the bit field must be inferred from the type | |
4567 | attribute of the data member containing the | |
4568 | bit field. */ | |
4569 | anonymous_size = TYPE_LENGTH (fp->type); | |
4570 | } | |
4571 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
4572 | - bit_offset - FIELD_BITSIZE (*fp); | |
4573 | } | |
4574 | } | |
4575 | ||
4576 | /* Get name of field. */ | |
39cbfefa DJ |
4577 | fieldname = dwarf2_name (die, cu); |
4578 | if (fieldname == NULL) | |
4579 | fieldname = ""; | |
d8151005 DJ |
4580 | |
4581 | /* The name is already allocated along with this objfile, so we don't | |
4582 | need to duplicate it for the type. */ | |
4583 | fp->name = fieldname; | |
c906108c SS |
4584 | |
4585 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 4586 | pointer or virtual base class pointer) to private. */ |
e142c38c | 4587 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 4588 | { |
d48cc9dd | 4589 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
4590 | new_field->accessibility = DW_ACCESS_private; |
4591 | fip->non_public_fields = 1; | |
4592 | } | |
4593 | } | |
a9a9bd0f | 4594 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 4595 | { |
a9a9bd0f DC |
4596 | /* C++ static member. */ |
4597 | ||
4598 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
4599 | is a declaration, but all versions of G++ as of this writing | |
4600 | (so through at least 3.2.1) incorrectly generate | |
4601 | DW_TAG_variable tags. */ | |
4602 | ||
c906108c | 4603 | char *physname; |
c906108c | 4604 | |
a9a9bd0f | 4605 | /* Get name of field. */ |
39cbfefa DJ |
4606 | fieldname = dwarf2_name (die, cu); |
4607 | if (fieldname == NULL) | |
c906108c SS |
4608 | return; |
4609 | ||
2df3850c | 4610 | /* Get physical name. */ |
94af9270 | 4611 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c | 4612 | |
d8151005 DJ |
4613 | /* The name is already allocated along with this objfile, so we don't |
4614 | need to duplicate it for the type. */ | |
4615 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 4616 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 4617 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
4618 | } |
4619 | else if (die->tag == DW_TAG_inheritance) | |
4620 | { | |
4621 | /* C++ base class field. */ | |
e142c38c | 4622 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 4623 | if (attr) |
d4b96c9a JK |
4624 | { |
4625 | int byte_offset = 0; | |
4626 | ||
4627 | if (attr_form_is_section_offset (attr)) | |
4628 | dwarf2_complex_location_expr_complaint (); | |
4629 | else if (attr_form_is_constant (attr)) | |
4630 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
4631 | else if (attr_form_is_block (attr)) | |
4632 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
4633 | else | |
4634 | dwarf2_complex_location_expr_complaint (); | |
4635 | ||
4636 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); | |
4637 | } | |
c906108c | 4638 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 4639 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
4640 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
4641 | fip->nbaseclasses++; | |
4642 | } | |
4643 | } | |
4644 | ||
4645 | /* Create the vector of fields, and attach it to the type. */ | |
4646 | ||
4647 | static void | |
fba45db2 | 4648 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 4649 | struct dwarf2_cu *cu) |
c906108c SS |
4650 | { |
4651 | int nfields = fip->nfields; | |
4652 | ||
4653 | /* Record the field count, allocate space for the array of fields, | |
4654 | and create blank accessibility bitfields if necessary. */ | |
4655 | TYPE_NFIELDS (type) = nfields; | |
4656 | TYPE_FIELDS (type) = (struct field *) | |
4657 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
4658 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
4659 | ||
b4ba55a1 | 4660 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
4661 | { |
4662 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
4663 | ||
4664 | TYPE_FIELD_PRIVATE_BITS (type) = | |
4665 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
4666 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
4667 | ||
4668 | TYPE_FIELD_PROTECTED_BITS (type) = | |
4669 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
4670 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
4671 | ||
4672 | TYPE_FIELD_IGNORE_BITS (type) = | |
4673 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
4674 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
4675 | } | |
4676 | ||
4677 | /* If the type has baseclasses, allocate and clear a bit vector for | |
4678 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 4679 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
4680 | { |
4681 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 4682 | unsigned char *pointer; |
c906108c SS |
4683 | |
4684 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
4685 | pointer = TYPE_ALLOC (type, num_bytes); |
4686 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
4687 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
4688 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
4689 | } | |
4690 | ||
4691 | /* Copy the saved-up fields into the field vector. Start from the head | |
4692 | of the list, adding to the tail of the field array, so that they end | |
4693 | up in the same order in the array in which they were added to the list. */ | |
4694 | while (nfields-- > 0) | |
4695 | { | |
7d0ccb61 DJ |
4696 | struct nextfield *fieldp; |
4697 | ||
4698 | if (fip->fields) | |
4699 | { | |
4700 | fieldp = fip->fields; | |
4701 | fip->fields = fieldp->next; | |
4702 | } | |
4703 | else | |
4704 | { | |
4705 | fieldp = fip->baseclasses; | |
4706 | fip->baseclasses = fieldp->next; | |
4707 | } | |
4708 | ||
4709 | TYPE_FIELD (type, nfields) = fieldp->field; | |
4710 | switch (fieldp->accessibility) | |
c906108c | 4711 | { |
c5aa993b | 4712 | case DW_ACCESS_private: |
b4ba55a1 JB |
4713 | if (cu->language != language_ada) |
4714 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 4715 | break; |
c906108c | 4716 | |
c5aa993b | 4717 | case DW_ACCESS_protected: |
b4ba55a1 JB |
4718 | if (cu->language != language_ada) |
4719 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 4720 | break; |
c906108c | 4721 | |
c5aa993b JM |
4722 | case DW_ACCESS_public: |
4723 | break; | |
c906108c | 4724 | |
c5aa993b JM |
4725 | default: |
4726 | /* Unknown accessibility. Complain and treat it as public. */ | |
4727 | { | |
e2e0b3e5 | 4728 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 4729 | fieldp->accessibility); |
c5aa993b JM |
4730 | } |
4731 | break; | |
c906108c SS |
4732 | } |
4733 | if (nfields < fip->nbaseclasses) | |
4734 | { | |
7d0ccb61 | 4735 | switch (fieldp->virtuality) |
c906108c | 4736 | { |
c5aa993b JM |
4737 | case DW_VIRTUALITY_virtual: |
4738 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 JB |
4739 | if (cu->language == language_ada) |
4740 | error ("unexpected virtuality in component of Ada type"); | |
c5aa993b JM |
4741 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
4742 | break; | |
c906108c SS |
4743 | } |
4744 | } | |
c906108c SS |
4745 | } |
4746 | } | |
4747 | ||
c906108c SS |
4748 | /* Add a member function to the proper fieldlist. */ |
4749 | ||
4750 | static void | |
107d2387 | 4751 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 4752 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 4753 | { |
e7c27a73 | 4754 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4755 | struct attribute *attr; |
4756 | struct fnfieldlist *flp; | |
4757 | int i; | |
4758 | struct fn_field *fnp; | |
4759 | char *fieldname; | |
4760 | char *physname; | |
4761 | struct nextfnfield *new_fnfield; | |
f792889a | 4762 | struct type *this_type; |
c906108c | 4763 | |
b4ba55a1 JB |
4764 | if (cu->language == language_ada) |
4765 | error ("unexpected member function in Ada type"); | |
4766 | ||
2df3850c | 4767 | /* Get name of member function. */ |
39cbfefa DJ |
4768 | fieldname = dwarf2_name (die, cu); |
4769 | if (fieldname == NULL) | |
2df3850c | 4770 | return; |
c906108c | 4771 | |
2df3850c | 4772 | /* Get the mangled name. */ |
94af9270 | 4773 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c SS |
4774 | |
4775 | /* Look up member function name in fieldlist. */ | |
4776 | for (i = 0; i < fip->nfnfields; i++) | |
4777 | { | |
27bfe10e | 4778 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
4779 | break; |
4780 | } | |
4781 | ||
4782 | /* Create new list element if necessary. */ | |
4783 | if (i < fip->nfnfields) | |
4784 | flp = &fip->fnfieldlists[i]; | |
4785 | else | |
4786 | { | |
4787 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4788 | { | |
4789 | fip->fnfieldlists = (struct fnfieldlist *) | |
4790 | xrealloc (fip->fnfieldlists, | |
4791 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4792 | * sizeof (struct fnfieldlist)); |
c906108c | 4793 | if (fip->nfnfields == 0) |
c13c43fd | 4794 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
4795 | } |
4796 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
4797 | flp->name = fieldname; | |
4798 | flp->length = 0; | |
4799 | flp->head = NULL; | |
4800 | fip->nfnfields++; | |
4801 | } | |
4802 | ||
4803 | /* Create a new member function field and chain it to the field list | |
4804 | entry. */ | |
4805 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 4806 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
4807 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
4808 | new_fnfield->next = flp->head; | |
4809 | flp->head = new_fnfield; | |
4810 | flp->length++; | |
4811 | ||
4812 | /* Fill in the member function field info. */ | |
4813 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
4814 | /* The name is already allocated along with this objfile, so we don't |
4815 | need to duplicate it for the type. */ | |
4816 | fnp->physname = physname ? physname : ""; | |
c906108c | 4817 | fnp->type = alloc_type (objfile); |
f792889a DJ |
4818 | this_type = read_type_die (die, cu); |
4819 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 4820 | { |
f792889a | 4821 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 4822 | |
f792889a | 4823 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
4824 | of the method itself (TYPE_CODE_METHOD). */ |
4825 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
4826 | TYPE_TARGET_TYPE (this_type), |
4827 | TYPE_FIELDS (this_type), | |
4828 | TYPE_NFIELDS (this_type), | |
4829 | TYPE_VARARGS (this_type)); | |
c906108c SS |
4830 | |
4831 | /* Handle static member functions. | |
c5aa993b JM |
4832 | Dwarf2 has no clean way to discern C++ static and non-static |
4833 | member functions. G++ helps GDB by marking the first | |
4834 | parameter for non-static member functions (which is the | |
4835 | this pointer) as artificial. We obtain this information | |
4836 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 4837 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
4838 | fnp->voffset = VOFFSET_STATIC; |
4839 | } | |
4840 | else | |
e2e0b3e5 | 4841 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 4842 | physname); |
c906108c SS |
4843 | |
4844 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 4845 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 4846 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
4847 | |
4848 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
4849 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
4850 | ||
4851 | /* Get accessibility. */ | |
e142c38c | 4852 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
4853 | if (attr) |
4854 | { | |
4855 | switch (DW_UNSND (attr)) | |
4856 | { | |
c5aa993b JM |
4857 | case DW_ACCESS_private: |
4858 | fnp->is_private = 1; | |
4859 | break; | |
4860 | case DW_ACCESS_protected: | |
4861 | fnp->is_protected = 1; | |
4862 | break; | |
c906108c SS |
4863 | } |
4864 | } | |
4865 | ||
b02dede2 | 4866 | /* Check for artificial methods. */ |
e142c38c | 4867 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
4868 | if (attr && DW_UNSND (attr) != 0) |
4869 | fnp->is_artificial = 1; | |
4870 | ||
0d564a31 DJ |
4871 | /* Get index in virtual function table if it is a virtual member |
4872 | function. For GCC, this is an offset in the appropriate | |
4873 | virtual table, as specified by DW_AT_containing_type. For | |
4874 | everyone else, it is an expression to be evaluated relative | |
4875 | to the object address. */ | |
4876 | ||
e142c38c | 4877 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
0d564a31 | 4878 | if (attr && fnp->fcontext) |
8e19ed76 PS |
4879 | { |
4880 | /* Support the .debug_loc offsets */ | |
4881 | if (attr_form_is_block (attr)) | |
4882 | { | |
e7c27a73 | 4883 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 | 4884 | } |
3690dd37 | 4885 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 4886 | { |
4d3c2250 | 4887 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4888 | } |
4889 | else | |
4890 | { | |
4d3c2250 KB |
4891 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
4892 | fieldname); | |
8e19ed76 | 4893 | } |
0d564a31 DJ |
4894 | } |
4895 | else if (attr) | |
4896 | { | |
4897 | /* We only support trivial expressions here. This hack will work | |
ba950e4d | 4898 | for v3 classes, which always start with the vtable pointer. */ |
0d564a31 DJ |
4899 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0 |
4900 | && DW_BLOCK (attr)->data[0] == DW_OP_deref) | |
4901 | { | |
4902 | struct dwarf_block blk; | |
9a619af0 | 4903 | |
0d564a31 DJ |
4904 | blk.size = DW_BLOCK (attr)->size - 1; |
4905 | blk.data = DW_BLOCK (attr)->data + 1; | |
ba950e4d DJ |
4906 | fnp->voffset = decode_locdesc (&blk, cu); |
4907 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
4908 | dwarf2_complex_location_expr_complaint (); | |
4909 | else | |
4910 | fnp->voffset /= cu->header.addr_size; | |
0d564a31 DJ |
4911 | fnp->voffset += 2; |
4912 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
4913 | } | |
4914 | else | |
4915 | dwarf2_complex_location_expr_complaint (); | |
4916 | } | |
d48cc9dd DJ |
4917 | else |
4918 | { | |
4919 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
4920 | if (attr && DW_UNSND (attr)) | |
4921 | { | |
4922 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
4923 | complaint (&symfile_complaints, | |
4924 | _("Member function \"%s\" (offset %d) is virtual but the vtable offset is not specified"), | |
4925 | fieldname, die->offset); | |
4926 | TYPE_CPLUS_DYNAMIC (type) = 1; | |
4927 | } | |
4928 | } | |
c906108c SS |
4929 | } |
4930 | ||
4931 | /* Create the vector of member function fields, and attach it to the type. */ | |
4932 | ||
4933 | static void | |
fba45db2 | 4934 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 4935 | struct dwarf2_cu *cu) |
c906108c SS |
4936 | { |
4937 | struct fnfieldlist *flp; | |
4938 | int total_length = 0; | |
4939 | int i; | |
4940 | ||
b4ba55a1 JB |
4941 | if (cu->language == language_ada) |
4942 | error ("unexpected member functions in Ada type"); | |
4943 | ||
c906108c SS |
4944 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
4945 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
4946 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
4947 | ||
4948 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
4949 | { | |
4950 | struct nextfnfield *nfp = flp->head; | |
4951 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
4952 | int k; | |
4953 | ||
4954 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
4955 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
4956 | fn_flp->fn_fields = (struct fn_field *) | |
4957 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
4958 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 4959 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
4960 | |
4961 | total_length += flp->length; | |
4962 | } | |
4963 | ||
4964 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
4965 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
4966 | } | |
4967 | ||
1168df01 JB |
4968 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
4969 | language, zero otherwise. */ | |
4970 | static int | |
4971 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
4972 | { | |
4973 | static const char vptr[] = "_vptr"; | |
987504bb | 4974 | static const char vtable[] = "vtable"; |
1168df01 | 4975 | |
987504bb JJ |
4976 | /* Look for the C++ and Java forms of the vtable. */ |
4977 | if ((cu->language == language_java | |
4978 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
4979 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
4980 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
4981 | return 1; |
4982 | ||
4983 | return 0; | |
4984 | } | |
4985 | ||
c0dd20ea | 4986 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
4987 | functions, with the ABI-specified layout. If TYPE describes |
4988 | such a structure, smash it into a member function type. | |
61049d3b DJ |
4989 | |
4990 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
4991 | This is GCC PR debug/28767. */ | |
c0dd20ea | 4992 | |
0b92b5bb TT |
4993 | static void |
4994 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 4995 | { |
0b92b5bb | 4996 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
4997 | |
4998 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
4999 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
5000 | return; | |
c0dd20ea DJ |
5001 | |
5002 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
5003 | if (TYPE_FIELD_NAME (type, 0) == NULL |
5004 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
5005 | || TYPE_FIELD_NAME (type, 1) == NULL | |
5006 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
5007 | return; | |
c0dd20ea DJ |
5008 | |
5009 | /* Find the type of the method. */ | |
0b92b5bb | 5010 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
5011 | if (pfn_type == NULL |
5012 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
5013 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 5014 | return; |
c0dd20ea DJ |
5015 | |
5016 | /* Look for the "this" argument. */ | |
5017 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
5018 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 5019 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 5020 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 5021 | return; |
c0dd20ea DJ |
5022 | |
5023 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
5024 | new_type = alloc_type (objfile); |
5025 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
5026 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
5027 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 5028 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 5029 | } |
1168df01 | 5030 | |
c906108c SS |
5031 | /* Called when we find the DIE that starts a structure or union scope |
5032 | (definition) to process all dies that define the members of the | |
5033 | structure or union. | |
5034 | ||
5035 | NOTE: we need to call struct_type regardless of whether or not the | |
5036 | DIE has an at_name attribute, since it might be an anonymous | |
5037 | structure or union. This gets the type entered into our set of | |
5038 | user defined types. | |
5039 | ||
5040 | However, if the structure is incomplete (an opaque struct/union) | |
5041 | then suppress creating a symbol table entry for it since gdb only | |
5042 | wants to find the one with the complete definition. Note that if | |
5043 | it is complete, we just call new_symbol, which does it's own | |
5044 | checking about whether the struct/union is anonymous or not (and | |
5045 | suppresses creating a symbol table entry itself). */ | |
5046 | ||
f792889a | 5047 | static struct type * |
134d01f1 | 5048 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5049 | { |
e7c27a73 | 5050 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5051 | struct type *type; |
5052 | struct attribute *attr; | |
39cbfefa | 5053 | char *name; |
0114d602 | 5054 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c | 5055 | |
348e048f DE |
5056 | /* If the definition of this type lives in .debug_types, read that type. |
5057 | Don't follow DW_AT_specification though, that will take us back up | |
5058 | the chain and we want to go down. */ | |
5059 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
5060 | if (attr) | |
5061 | { | |
5062 | struct dwarf2_cu *type_cu = cu; | |
5063 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 5064 | |
348e048f DE |
5065 | /* We could just recurse on read_structure_type, but we need to call |
5066 | get_die_type to ensure only one type for this DIE is created. | |
5067 | This is important, for example, because for c++ classes we need | |
5068 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
5069 | type = read_type_die (type_die, type_cu); | |
5070 | return set_die_type (die, type, cu); | |
5071 | } | |
5072 | ||
c0dd20ea | 5073 | type = alloc_type (objfile); |
c906108c | 5074 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 5075 | |
39cbfefa DJ |
5076 | name = dwarf2_name (die, cu); |
5077 | if (name != NULL) | |
c906108c | 5078 | { |
987504bb JJ |
5079 | if (cu->language == language_cplus |
5080 | || cu->language == language_java) | |
63d06c5c | 5081 | { |
94af9270 KS |
5082 | TYPE_TAG_NAME (type) = (char *) dwarf2_full_name (name, die, cu); |
5083 | if (die->tag == DW_TAG_structure_type | |
5084 | || die->tag == DW_TAG_class_type) | |
5085 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
5086 | } |
5087 | else | |
5088 | { | |
d8151005 DJ |
5089 | /* The name is already allocated along with this objfile, so |
5090 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
5091 | TYPE_TAG_NAME (type) = (char *) name; |
5092 | if (die->tag == DW_TAG_class_type) | |
5093 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 5094 | } |
c906108c SS |
5095 | } |
5096 | ||
5097 | if (die->tag == DW_TAG_structure_type) | |
5098 | { | |
5099 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
5100 | } | |
5101 | else if (die->tag == DW_TAG_union_type) | |
5102 | { | |
5103 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
5104 | } | |
5105 | else | |
5106 | { | |
c906108c SS |
5107 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
5108 | } | |
5109 | ||
0cc2414c TT |
5110 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
5111 | TYPE_DECLARED_CLASS (type) = 1; | |
5112 | ||
e142c38c | 5113 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
5114 | if (attr) |
5115 | { | |
5116 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
5117 | } | |
5118 | else | |
5119 | { | |
5120 | TYPE_LENGTH (type) = 0; | |
5121 | } | |
5122 | ||
876cecd0 | 5123 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 5124 | if (die_is_declaration (die, cu)) |
876cecd0 | 5125 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
5126 | else if (attr == NULL && die->child == NULL |
5127 | && producer_is_realview (cu->producer)) | |
5128 | /* RealView does not output the required DW_AT_declaration | |
5129 | on incomplete types. */ | |
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 | { | |
90aeadfc | 5254 | struct die_info *child_die = die->child; |
f792889a | 5255 | struct type *this_type; |
c906108c | 5256 | |
f792889a DJ |
5257 | this_type = get_die_type (die, cu); |
5258 | if (this_type == NULL) | |
5259 | this_type = read_structure_type (die, cu); | |
c906108c | 5260 | |
90aeadfc DC |
5261 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
5262 | snapshots) has been known to create a die giving a declaration | |
5263 | for a class that has, as a child, a die giving a definition for a | |
5264 | nested class. So we have to process our children even if the | |
5265 | current die is a declaration. Normally, of course, a declaration | |
5266 | won't have any children at all. */ | |
134d01f1 | 5267 | |
90aeadfc DC |
5268 | while (child_die != NULL && child_die->tag) |
5269 | { | |
5270 | if (child_die->tag == DW_TAG_member | |
5271 | || child_die->tag == DW_TAG_variable | |
5272 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 5273 | { |
90aeadfc | 5274 | /* Do nothing. */ |
134d01f1 | 5275 | } |
90aeadfc DC |
5276 | else |
5277 | process_die (child_die, cu); | |
134d01f1 | 5278 | |
90aeadfc | 5279 | child_die = sibling_die (child_die); |
134d01f1 DJ |
5280 | } |
5281 | ||
fa4028e9 JB |
5282 | /* Do not consider external references. According to the DWARF standard, |
5283 | these DIEs are identified by the fact that they have no byte_size | |
5284 | attribute, and a declaration attribute. */ | |
5285 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
5286 | || !die_is_declaration (die, cu)) | |
f792889a | 5287 | new_symbol (die, this_type, cu); |
134d01f1 DJ |
5288 | } |
5289 | ||
5290 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
5291 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 5292 | |
f792889a | 5293 | static struct type * |
134d01f1 | 5294 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5295 | { |
e7c27a73 | 5296 | struct objfile *objfile = cu->objfile; |
c906108c | 5297 | struct type *type; |
c906108c | 5298 | struct attribute *attr; |
0114d602 | 5299 | const char *name; |
134d01f1 | 5300 | |
348e048f DE |
5301 | /* If the definition of this type lives in .debug_types, read that type. |
5302 | Don't follow DW_AT_specification though, that will take us back up | |
5303 | the chain and we want to go down. */ | |
5304 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
5305 | if (attr) | |
5306 | { | |
5307 | struct dwarf2_cu *type_cu = cu; | |
5308 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 5309 | |
348e048f DE |
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 | { | |
134d01f1 DJ |
5351 | struct die_info *child_die; |
5352 | struct field *fields; | |
134d01f1 DJ |
5353 | struct symbol *sym; |
5354 | int num_fields; | |
5355 | int unsigned_enum = 1; | |
39cbfefa | 5356 | char *name; |
f792889a | 5357 | struct type *this_type; |
134d01f1 | 5358 | |
c906108c SS |
5359 | num_fields = 0; |
5360 | fields = NULL; | |
f792889a DJ |
5361 | this_type = get_die_type (die, cu); |
5362 | if (this_type == NULL) | |
5363 | this_type = read_enumeration_type (die, cu); | |
639d11d3 | 5364 | if (die->child != NULL) |
c906108c | 5365 | { |
639d11d3 | 5366 | child_die = die->child; |
c906108c SS |
5367 | while (child_die && child_die->tag) |
5368 | { | |
5369 | if (child_die->tag != DW_TAG_enumerator) | |
5370 | { | |
e7c27a73 | 5371 | process_die (child_die, cu); |
c906108c SS |
5372 | } |
5373 | else | |
5374 | { | |
39cbfefa DJ |
5375 | name = dwarf2_name (child_die, cu); |
5376 | if (name) | |
c906108c | 5377 | { |
f792889a | 5378 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
5379 | if (SYMBOL_VALUE (sym) < 0) |
5380 | unsigned_enum = 0; | |
5381 | ||
5382 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
5383 | { | |
5384 | fields = (struct field *) | |
5385 | xrealloc (fields, | |
5386 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 5387 | * sizeof (struct field)); |
c906108c SS |
5388 | } |
5389 | ||
3567439c | 5390 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 5391 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 5392 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
5393 | FIELD_BITSIZE (fields[num_fields]) = 0; |
5394 | ||
5395 | num_fields++; | |
5396 | } | |
5397 | } | |
5398 | ||
5399 | child_die = sibling_die (child_die); | |
5400 | } | |
5401 | ||
5402 | if (num_fields) | |
5403 | { | |
f792889a DJ |
5404 | TYPE_NFIELDS (this_type) = num_fields; |
5405 | TYPE_FIELDS (this_type) = (struct field *) | |
5406 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
5407 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 5408 | sizeof (struct field) * num_fields); |
b8c9b27d | 5409 | xfree (fields); |
c906108c SS |
5410 | } |
5411 | if (unsigned_enum) | |
876cecd0 | 5412 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 5413 | } |
134d01f1 | 5414 | |
f792889a | 5415 | new_symbol (die, this_type, cu); |
c906108c SS |
5416 | } |
5417 | ||
5418 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
5419 | the DIE's type field. For now, this only handles one dimensional | |
5420 | arrays. */ | |
5421 | ||
f792889a | 5422 | static struct type * |
e7c27a73 | 5423 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5424 | { |
e7c27a73 | 5425 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5426 | struct die_info *child_die; |
5427 | struct type *type = NULL; | |
5428 | struct type *element_type, *range_type, *index_type; | |
5429 | struct type **range_types = NULL; | |
5430 | struct attribute *attr; | |
5431 | int ndim = 0; | |
5432 | struct cleanup *back_to; | |
39cbfefa | 5433 | char *name; |
c906108c | 5434 | |
e7c27a73 | 5435 | element_type = die_type (die, cu); |
c906108c SS |
5436 | |
5437 | /* Irix 6.2 native cc creates array types without children for | |
5438 | arrays with unspecified length. */ | |
639d11d3 | 5439 | if (die->child == NULL) |
c906108c | 5440 | { |
46bf5051 | 5441 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 5442 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
5443 | type = create_array_type (NULL, element_type, range_type); |
5444 | return set_die_type (die, type, cu); | |
c906108c SS |
5445 | } |
5446 | ||
5447 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 5448 | child_die = die->child; |
c906108c SS |
5449 | while (child_die && child_die->tag) |
5450 | { | |
5451 | if (child_die->tag == DW_TAG_subrange_type) | |
5452 | { | |
f792889a | 5453 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 5454 | |
f792889a | 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; | |
9a619af0 | 5481 | |
7ca2d3a3 DL |
5482 | while (i < ndim) |
5483 | type = create_array_type (NULL, type, range_types[i++]); | |
5484 | } | |
5485 | else | |
5486 | { | |
5487 | while (ndim-- > 0) | |
5488 | type = create_array_type (NULL, type, range_types[ndim]); | |
5489 | } | |
c906108c | 5490 | |
f5f8a009 EZ |
5491 | /* Understand Dwarf2 support for vector types (like they occur on |
5492 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
5493 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
5494 | custom vendor extension. The main difference between a regular | |
5495 | array and the vector variant is that vectors are passed by value | |
5496 | to functions. */ | |
e142c38c | 5497 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 5498 | if (attr) |
ea37ba09 | 5499 | make_vector_type (type); |
f5f8a009 | 5500 | |
39cbfefa DJ |
5501 | name = dwarf2_name (die, cu); |
5502 | if (name) | |
5503 | TYPE_NAME (type) = name; | |
714e295e | 5504 | |
b4ba55a1 JB |
5505 | set_descriptive_type (type, die, cu); |
5506 | ||
c906108c SS |
5507 | do_cleanups (back_to); |
5508 | ||
5509 | /* Install the type in the die. */ | |
f792889a | 5510 | return set_die_type (die, type, cu); |
c906108c SS |
5511 | } |
5512 | ||
7ca2d3a3 DL |
5513 | static enum dwarf_array_dim_ordering |
5514 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
5515 | { | |
5516 | struct attribute *attr; | |
5517 | ||
5518 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
5519 | ||
5520 | if (attr) return DW_SND (attr); | |
5521 | ||
5522 | /* | |
5523 | GNU F77 is a special case, as at 08/2004 array type info is the | |
5524 | opposite order to the dwarf2 specification, but data is still | |
5525 | laid out as per normal fortran. | |
5526 | ||
5527 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
5528 | version checking. | |
5529 | */ | |
5530 | ||
905e0470 PM |
5531 | if (cu->language == language_fortran |
5532 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
5533 | { |
5534 | return DW_ORD_row_major; | |
5535 | } | |
5536 | ||
5537 | switch (cu->language_defn->la_array_ordering) | |
5538 | { | |
5539 | case array_column_major: | |
5540 | return DW_ORD_col_major; | |
5541 | case array_row_major: | |
5542 | default: | |
5543 | return DW_ORD_row_major; | |
5544 | }; | |
5545 | } | |
5546 | ||
72019c9c GM |
5547 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
5548 | the DIE's type field. */ | |
5549 | ||
f792889a | 5550 | static struct type * |
72019c9c GM |
5551 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
5552 | { | |
f792889a | 5553 | struct type *set_type = create_set_type (NULL, die_type (die, cu)); |
d09039dd | 5554 | struct attribute *attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
f792889a | 5555 | |
d09039dd PM |
5556 | if (attr) |
5557 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
f792889a | 5558 | return set_die_type (die, set_type, cu); |
72019c9c | 5559 | } |
7ca2d3a3 | 5560 | |
c906108c SS |
5561 | /* First cut: install each common block member as a global variable. */ |
5562 | ||
5563 | static void | |
e7c27a73 | 5564 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5565 | { |
5566 | struct die_info *child_die; | |
5567 | struct attribute *attr; | |
5568 | struct symbol *sym; | |
5569 | CORE_ADDR base = (CORE_ADDR) 0; | |
5570 | ||
e142c38c | 5571 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
5572 | if (attr) |
5573 | { | |
8e19ed76 PS |
5574 | /* Support the .debug_loc offsets */ |
5575 | if (attr_form_is_block (attr)) | |
5576 | { | |
e7c27a73 | 5577 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 5578 | } |
3690dd37 | 5579 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 5580 | { |
4d3c2250 | 5581 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5582 | } |
5583 | else | |
5584 | { | |
4d3c2250 KB |
5585 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
5586 | "common block member"); | |
8e19ed76 | 5587 | } |
c906108c | 5588 | } |
639d11d3 | 5589 | if (die->child != NULL) |
c906108c | 5590 | { |
639d11d3 | 5591 | child_die = die->child; |
c906108c SS |
5592 | while (child_die && child_die->tag) |
5593 | { | |
e7c27a73 | 5594 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 5595 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
5596 | if (attr) |
5597 | { | |
d4b96c9a JK |
5598 | CORE_ADDR byte_offset = 0; |
5599 | ||
5600 | if (attr_form_is_section_offset (attr)) | |
5601 | dwarf2_complex_location_expr_complaint (); | |
5602 | else if (attr_form_is_constant (attr)) | |
5603 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
5604 | else if (attr_form_is_block (attr)) | |
5605 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
5606 | else | |
5607 | dwarf2_complex_location_expr_complaint (); | |
5608 | ||
5609 | SYMBOL_VALUE_ADDRESS (sym) = base + byte_offset; | |
c906108c SS |
5610 | add_symbol_to_list (sym, &global_symbols); |
5611 | } | |
5612 | child_die = sibling_die (child_die); | |
5613 | } | |
5614 | } | |
5615 | } | |
5616 | ||
0114d602 | 5617 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 5618 | |
0114d602 DJ |
5619 | static struct type * |
5620 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 5621 | { |
e7c27a73 | 5622 | struct objfile *objfile = cu->objfile; |
0114d602 | 5623 | const char *previous_prefix, *name; |
9219021c | 5624 | int is_anonymous; |
0114d602 DJ |
5625 | struct type *type; |
5626 | ||
5627 | /* For extensions, reuse the type of the original namespace. */ | |
5628 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
5629 | { | |
5630 | struct die_info *ext_die; | |
5631 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 5632 | |
0114d602 DJ |
5633 | ext_die = dwarf2_extension (die, &ext_cu); |
5634 | type = read_type_die (ext_die, ext_cu); | |
5635 | return set_die_type (die, type, cu); | |
5636 | } | |
9219021c | 5637 | |
e142c38c | 5638 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
5639 | |
5640 | /* Now build the name of the current namespace. */ | |
5641 | ||
0114d602 DJ |
5642 | previous_prefix = determine_prefix (die, cu); |
5643 | if (previous_prefix[0] != '\0') | |
5644 | name = typename_concat (&objfile->objfile_obstack, | |
5645 | previous_prefix, name, cu); | |
5646 | ||
5647 | /* Create the type. */ | |
5648 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
5649 | objfile); | |
5650 | TYPE_NAME (type) = (char *) name; | |
5651 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
5652 | ||
60531b24 | 5653 | return set_die_type (die, type, cu); |
0114d602 DJ |
5654 | } |
5655 | ||
5656 | /* Read a C++ namespace. */ | |
5657 | ||
5658 | static void | |
5659 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
5660 | { | |
5661 | struct objfile *objfile = cu->objfile; | |
5662 | const char *name; | |
5663 | int is_anonymous; | |
9219021c | 5664 | |
5c4e30ca DC |
5665 | /* Add a symbol associated to this if we haven't seen the namespace |
5666 | before. Also, add a using directive if it's an anonymous | |
5667 | namespace. */ | |
9219021c | 5668 | |
f2f0e013 | 5669 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
5670 | { |
5671 | struct type *type; | |
5672 | ||
0114d602 | 5673 | type = read_type_die (die, cu); |
e7c27a73 | 5674 | new_symbol (die, type, cu); |
5c4e30ca | 5675 | |
0114d602 | 5676 | name = namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 5677 | if (is_anonymous) |
0114d602 DJ |
5678 | { |
5679 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 5680 | |
c0cc3a76 | 5681 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
13387711 | 5682 | NULL, &objfile->objfile_obstack); |
0114d602 | 5683 | } |
5c4e30ca | 5684 | } |
9219021c | 5685 | |
639d11d3 | 5686 | if (die->child != NULL) |
d9fa45fe | 5687 | { |
639d11d3 | 5688 | struct die_info *child_die = die->child; |
d9fa45fe DC |
5689 | |
5690 | while (child_die && child_die->tag) | |
5691 | { | |
e7c27a73 | 5692 | process_die (child_die, cu); |
d9fa45fe DC |
5693 | child_die = sibling_die (child_die); |
5694 | } | |
5695 | } | |
38d518c9 EZ |
5696 | } |
5697 | ||
5d7cb8df JK |
5698 | /* Read a Fortran module. */ |
5699 | ||
5700 | static void | |
5701 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
5702 | { | |
5703 | struct die_info *child_die = die->child; | |
5704 | ||
5705 | /* FIXME: Support the separate Fortran module namespaces. */ | |
5706 | ||
5707 | while (child_die && child_die->tag) | |
5708 | { | |
5709 | process_die (child_die, cu); | |
5710 | child_die = sibling_die (child_die); | |
5711 | } | |
5712 | } | |
5713 | ||
38d518c9 EZ |
5714 | /* Return the name of the namespace represented by DIE. Set |
5715 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
5716 | namespace. */ | |
5717 | ||
5718 | static const char * | |
e142c38c | 5719 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
5720 | { |
5721 | struct die_info *current_die; | |
5722 | const char *name = NULL; | |
5723 | ||
5724 | /* Loop through the extensions until we find a name. */ | |
5725 | ||
5726 | for (current_die = die; | |
5727 | current_die != NULL; | |
f2f0e013 | 5728 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 5729 | { |
e142c38c | 5730 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
5731 | if (name != NULL) |
5732 | break; | |
5733 | } | |
5734 | ||
5735 | /* Is it an anonymous namespace? */ | |
5736 | ||
5737 | *is_anonymous = (name == NULL); | |
5738 | if (*is_anonymous) | |
5739 | name = "(anonymous namespace)"; | |
5740 | ||
5741 | return name; | |
d9fa45fe DC |
5742 | } |
5743 | ||
c906108c SS |
5744 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
5745 | the user defined type vector. */ | |
5746 | ||
f792889a | 5747 | static struct type * |
e7c27a73 | 5748 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5749 | { |
5e2b427d | 5750 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 5751 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 5752 | struct type *type; |
8b2dbe47 KB |
5753 | struct attribute *attr_byte_size; |
5754 | struct attribute *attr_address_class; | |
5755 | int byte_size, addr_class; | |
c906108c | 5756 | |
e7c27a73 | 5757 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 5758 | |
e142c38c | 5759 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
5760 | if (attr_byte_size) |
5761 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 5762 | else |
8b2dbe47 KB |
5763 | byte_size = cu_header->addr_size; |
5764 | ||
e142c38c | 5765 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
5766 | if (attr_address_class) |
5767 | addr_class = DW_UNSND (attr_address_class); | |
5768 | else | |
5769 | addr_class = DW_ADDR_none; | |
5770 | ||
5771 | /* If the pointer size or address class is different than the | |
5772 | default, create a type variant marked as such and set the | |
5773 | length accordingly. */ | |
5774 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 5775 | { |
5e2b427d | 5776 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
5777 | { |
5778 | int type_flags; | |
5779 | ||
849957d9 | 5780 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 5781 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
5782 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
5783 | == 0); | |
8b2dbe47 KB |
5784 | type = make_type_with_address_space (type, type_flags); |
5785 | } | |
5786 | else if (TYPE_LENGTH (type) != byte_size) | |
5787 | { | |
e2e0b3e5 | 5788 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 | 5789 | } |
9a619af0 MS |
5790 | else |
5791 | { | |
5792 | /* Should we also complain about unhandled address classes? */ | |
5793 | } | |
c906108c | 5794 | } |
8b2dbe47 KB |
5795 | |
5796 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 5797 | return set_die_type (die, type, cu); |
c906108c SS |
5798 | } |
5799 | ||
5800 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
5801 | the user defined type vector. */ | |
5802 | ||
f792889a | 5803 | static struct type * |
e7c27a73 | 5804 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5805 | { |
5806 | struct type *type; | |
5807 | struct type *to_type; | |
5808 | struct type *domain; | |
5809 | ||
e7c27a73 DJ |
5810 | to_type = die_type (die, cu); |
5811 | domain = die_containing_type (die, cu); | |
0d5de010 DJ |
5812 | |
5813 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) | |
5814 | type = lookup_methodptr_type (to_type); | |
5815 | else | |
5816 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 5817 | |
f792889a | 5818 | return set_die_type (die, type, cu); |
c906108c SS |
5819 | } |
5820 | ||
5821 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
5822 | the user defined type vector. */ | |
5823 | ||
f792889a | 5824 | static struct type * |
e7c27a73 | 5825 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5826 | { |
e7c27a73 | 5827 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5828 | struct type *type; |
5829 | struct attribute *attr; | |
5830 | ||
e7c27a73 | 5831 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 5832 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
5833 | if (attr) |
5834 | { | |
5835 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
5836 | } | |
5837 | else | |
5838 | { | |
107d2387 | 5839 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 5840 | } |
f792889a | 5841 | return set_die_type (die, type, cu); |
c906108c SS |
5842 | } |
5843 | ||
f792889a | 5844 | static struct type * |
e7c27a73 | 5845 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5846 | { |
f792889a | 5847 | struct type *base_type, *cv_type; |
c906108c | 5848 | |
e7c27a73 | 5849 | base_type = die_type (die, cu); |
f792889a DJ |
5850 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
5851 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
5852 | } |
5853 | ||
f792889a | 5854 | static struct type * |
e7c27a73 | 5855 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5856 | { |
f792889a | 5857 | struct type *base_type, *cv_type; |
c906108c | 5858 | |
e7c27a73 | 5859 | base_type = die_type (die, cu); |
f792889a DJ |
5860 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
5861 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
5862 | } |
5863 | ||
5864 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
5865 | the user defined type vector. It isn't really a user defined type, | |
5866 | but it behaves like one, with other DIE's using an AT_user_def_type | |
5867 | attribute to reference it. */ | |
5868 | ||
f792889a | 5869 | static struct type * |
e7c27a73 | 5870 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5871 | { |
e7c27a73 | 5872 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 5873 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
5874 | struct type *type, *range_type, *index_type, *char_type; |
5875 | struct attribute *attr; | |
5876 | unsigned int length; | |
5877 | ||
e142c38c | 5878 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
5879 | if (attr) |
5880 | { | |
5881 | length = DW_UNSND (attr); | |
5882 | } | |
5883 | else | |
5884 | { | |
b21b22e0 | 5885 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 5886 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
5887 | if (attr) |
5888 | { | |
5889 | length = DW_UNSND (attr); | |
5890 | } | |
5891 | else | |
5892 | { | |
5893 | length = 1; | |
5894 | } | |
c906108c | 5895 | } |
6ccb9162 | 5896 | |
46bf5051 | 5897 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 5898 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
5899 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
5900 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 5901 | |
f792889a | 5902 | return set_die_type (die, type, cu); |
c906108c SS |
5903 | } |
5904 | ||
5905 | /* Handle DIES due to C code like: | |
5906 | ||
5907 | struct foo | |
c5aa993b JM |
5908 | { |
5909 | int (*funcp)(int a, long l); | |
5910 | int b; | |
5911 | }; | |
c906108c SS |
5912 | |
5913 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 5914 | */ |
c906108c | 5915 | |
f792889a | 5916 | static struct type * |
e7c27a73 | 5917 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
5918 | { |
5919 | struct type *type; /* Type that this function returns */ | |
5920 | struct type *ftype; /* Function that returns above type */ | |
5921 | struct attribute *attr; | |
5922 | ||
e7c27a73 | 5923 | type = die_type (die, cu); |
0c8b41f1 | 5924 | ftype = lookup_function_type (type); |
c906108c | 5925 | |
5b8101ae | 5926 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 5927 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 5928 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 5929 | || cu->language == language_cplus |
5b8101ae PM |
5930 | || cu->language == language_java |
5931 | || cu->language == language_pascal) | |
876cecd0 | 5932 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
5933 | else if (producer_is_realview (cu->producer)) |
5934 | /* RealView does not emit DW_AT_prototyped. We can not | |
5935 | distinguish prototyped and unprototyped functions; default to | |
5936 | prototyped, since that is more common in modern code (and | |
5937 | RealView warns about unprototyped functions). */ | |
5938 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 5939 | |
c055b101 CV |
5940 | /* Store the calling convention in the type if it's available in |
5941 | the subroutine die. Otherwise set the calling convention to | |
5942 | the default value DW_CC_normal. */ | |
5943 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
5944 | TYPE_CALLING_CONVENTION (ftype) = attr ? DW_UNSND (attr) : DW_CC_normal; | |
76c10ea2 GM |
5945 | |
5946 | /* We need to add the subroutine type to the die immediately so | |
5947 | we don't infinitely recurse when dealing with parameters | |
5948 | declared as the same subroutine type. */ | |
5949 | set_die_type (die, ftype, cu); | |
c055b101 | 5950 | |
639d11d3 | 5951 | if (die->child != NULL) |
c906108c | 5952 | { |
8072405b | 5953 | struct type *void_type = objfile_type (cu->objfile)->builtin_void; |
c906108c | 5954 | struct die_info *child_die; |
8072405b | 5955 | int nparams, iparams; |
c906108c SS |
5956 | |
5957 | /* Count the number of parameters. | |
5958 | FIXME: GDB currently ignores vararg functions, but knows about | |
5959 | vararg member functions. */ | |
8072405b | 5960 | nparams = 0; |
639d11d3 | 5961 | child_die = die->child; |
c906108c SS |
5962 | while (child_die && child_die->tag) |
5963 | { | |
5964 | if (child_die->tag == DW_TAG_formal_parameter) | |
5965 | nparams++; | |
5966 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 5967 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
5968 | child_die = sibling_die (child_die); |
5969 | } | |
5970 | ||
5971 | /* Allocate storage for parameters and fill them in. */ | |
5972 | TYPE_NFIELDS (ftype) = nparams; | |
5973 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 5974 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 5975 | |
8072405b JK |
5976 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
5977 | even if we error out during the parameters reading below. */ | |
5978 | for (iparams = 0; iparams < nparams; iparams++) | |
5979 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
5980 | ||
5981 | iparams = 0; | |
639d11d3 | 5982 | child_die = die->child; |
c906108c SS |
5983 | while (child_die && child_die->tag) |
5984 | { | |
5985 | if (child_die->tag == DW_TAG_formal_parameter) | |
5986 | { | |
5987 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
5988 | member functions. G++ helps GDB by marking the first |
5989 | parameter for non-static member functions (which is the | |
5990 | this pointer) as artificial. We pass this information | |
5991 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 5992 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
5993 | if (attr) |
5994 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
5995 | else | |
418835cc KS |
5996 | { |
5997 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
5998 | ||
5999 | /* GCC/43521: In java, the formal parameter | |
6000 | "this" is sometimes not marked with DW_AT_artificial. */ | |
6001 | if (cu->language == language_java) | |
6002 | { | |
6003 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 6004 | |
418835cc KS |
6005 | if (name && !strcmp (name, "this")) |
6006 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
6007 | } | |
6008 | } | |
e7c27a73 | 6009 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
6010 | iparams++; |
6011 | } | |
6012 | child_die = sibling_die (child_die); | |
6013 | } | |
6014 | } | |
6015 | ||
76c10ea2 | 6016 | return ftype; |
c906108c SS |
6017 | } |
6018 | ||
f792889a | 6019 | static struct type * |
e7c27a73 | 6020 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6021 | { |
e7c27a73 | 6022 | struct objfile *objfile = cu->objfile; |
0114d602 | 6023 | const char *name = NULL; |
f792889a | 6024 | struct type *this_type; |
c906108c | 6025 | |
94af9270 | 6026 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 6027 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
6028 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
6029 | TYPE_NAME (this_type) = (char *) name; | |
f792889a DJ |
6030 | set_die_type (die, this_type, cu); |
6031 | TYPE_TARGET_TYPE (this_type) = die_type (die, cu); | |
6032 | return this_type; | |
c906108c SS |
6033 | } |
6034 | ||
6035 | /* Find a representation of a given base type and install | |
6036 | it in the TYPE field of the die. */ | |
6037 | ||
f792889a | 6038 | static struct type * |
e7c27a73 | 6039 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6040 | { |
e7c27a73 | 6041 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6042 | struct type *type; |
6043 | struct attribute *attr; | |
6044 | int encoding = 0, size = 0; | |
39cbfefa | 6045 | char *name; |
6ccb9162 UW |
6046 | enum type_code code = TYPE_CODE_INT; |
6047 | int type_flags = 0; | |
6048 | struct type *target_type = NULL; | |
c906108c | 6049 | |
e142c38c | 6050 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
6051 | if (attr) |
6052 | { | |
6053 | encoding = DW_UNSND (attr); | |
6054 | } | |
e142c38c | 6055 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6056 | if (attr) |
6057 | { | |
6058 | size = DW_UNSND (attr); | |
6059 | } | |
39cbfefa | 6060 | name = dwarf2_name (die, cu); |
6ccb9162 | 6061 | if (!name) |
c906108c | 6062 | { |
6ccb9162 UW |
6063 | complaint (&symfile_complaints, |
6064 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 6065 | } |
6ccb9162 UW |
6066 | |
6067 | switch (encoding) | |
c906108c | 6068 | { |
6ccb9162 UW |
6069 | case DW_ATE_address: |
6070 | /* Turn DW_ATE_address into a void * pointer. */ | |
6071 | code = TYPE_CODE_PTR; | |
6072 | type_flags |= TYPE_FLAG_UNSIGNED; | |
6073 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
6074 | break; | |
6075 | case DW_ATE_boolean: | |
6076 | code = TYPE_CODE_BOOL; | |
6077 | type_flags |= TYPE_FLAG_UNSIGNED; | |
6078 | break; | |
6079 | case DW_ATE_complex_float: | |
6080 | code = TYPE_CODE_COMPLEX; | |
6081 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
6082 | break; | |
6083 | case DW_ATE_decimal_float: | |
6084 | code = TYPE_CODE_DECFLOAT; | |
6085 | break; | |
6086 | case DW_ATE_float: | |
6087 | code = TYPE_CODE_FLT; | |
6088 | break; | |
6089 | case DW_ATE_signed: | |
6090 | break; | |
6091 | case DW_ATE_unsigned: | |
6092 | type_flags |= TYPE_FLAG_UNSIGNED; | |
6093 | break; | |
6094 | case DW_ATE_signed_char: | |
868a0084 PM |
6095 | if (cu->language == language_ada || cu->language == language_m2 |
6096 | || cu->language == language_pascal) | |
6ccb9162 UW |
6097 | code = TYPE_CODE_CHAR; |
6098 | break; | |
6099 | case DW_ATE_unsigned_char: | |
868a0084 PM |
6100 | if (cu->language == language_ada || cu->language == language_m2 |
6101 | || cu->language == language_pascal) | |
6ccb9162 UW |
6102 | code = TYPE_CODE_CHAR; |
6103 | type_flags |= TYPE_FLAG_UNSIGNED; | |
6104 | break; | |
6105 | default: | |
6106 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
6107 | dwarf_type_encoding_name (encoding)); | |
6108 | break; | |
c906108c | 6109 | } |
6ccb9162 | 6110 | |
0114d602 DJ |
6111 | type = init_type (code, size, type_flags, NULL, objfile); |
6112 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
6113 | TYPE_TARGET_TYPE (type) = target_type; |
6114 | ||
0114d602 | 6115 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 6116 | TYPE_NOSIGN (type) = 1; |
0114d602 | 6117 | |
f792889a | 6118 | return set_die_type (die, type, cu); |
c906108c SS |
6119 | } |
6120 | ||
a02abb62 JB |
6121 | /* Read the given DW_AT_subrange DIE. */ |
6122 | ||
f792889a | 6123 | static struct type * |
a02abb62 JB |
6124 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
6125 | { | |
5e2b427d | 6126 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
a02abb62 JB |
6127 | struct type *base_type; |
6128 | struct type *range_type; | |
6129 | struct attribute *attr; | |
43bbcdc2 PH |
6130 | LONGEST low = 0; |
6131 | LONGEST high = -1; | |
39cbfefa | 6132 | char *name; |
43bbcdc2 | 6133 | LONGEST negative_mask; |
a02abb62 | 6134 | |
a02abb62 | 6135 | base_type = die_type (die, cu); |
3d1f72c2 | 6136 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
a02abb62 JB |
6137 | { |
6138 | complaint (&symfile_complaints, | |
e2e0b3e5 | 6139 | _("DW_AT_type missing from DW_TAG_subrange_type")); |
17a912b6 | 6140 | base_type |
5e2b427d | 6141 | = init_type (TYPE_CODE_INT, gdbarch_addr_bit (gdbarch) / 8, |
6ccb9162 | 6142 | 0, NULL, cu->objfile); |
a02abb62 JB |
6143 | } |
6144 | ||
e142c38c | 6145 | if (cu->language == language_fortran) |
a02abb62 JB |
6146 | { |
6147 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
6148 | low = 1; | |
6149 | } | |
6150 | ||
dd5e6932 DJ |
6151 | /* FIXME: For variable sized arrays either of these could be |
6152 | a variable rather than a constant value. We'll allow it, | |
6153 | but we don't know how to handle it. */ | |
e142c38c | 6154 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
6155 | if (attr) |
6156 | low = dwarf2_get_attr_constant_value (attr, 0); | |
6157 | ||
e142c38c | 6158 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
6159 | if (attr) |
6160 | { | |
6161 | if (attr->form == DW_FORM_block1) | |
6162 | { | |
6163 | /* GCC encodes arrays with unspecified or dynamic length | |
6164 | with a DW_FORM_block1 attribute. | |
6165 | FIXME: GDB does not yet know how to handle dynamic | |
6166 | arrays properly, treat them as arrays with unspecified | |
6167 | length for now. | |
6168 | ||
6169 | FIXME: jimb/2003-09-22: GDB does not really know | |
6170 | how to handle arrays of unspecified length | |
6171 | either; we just represent them as zero-length | |
6172 | arrays. Choose an appropriate upper bound given | |
6173 | the lower bound we've computed above. */ | |
6174 | high = low - 1; | |
6175 | } | |
6176 | else | |
6177 | high = dwarf2_get_attr_constant_value (attr, 1); | |
6178 | } | |
6179 | ||
43bbcdc2 PH |
6180 | negative_mask = |
6181 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); | |
6182 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
6183 | low |= negative_mask; | |
6184 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
6185 | high |= negative_mask; | |
6186 | ||
a02abb62 JB |
6187 | range_type = create_range_type (NULL, base_type, low, high); |
6188 | ||
bbb0eef6 JK |
6189 | /* Mark arrays with dynamic length at least as an array of unspecified |
6190 | length. GDB could check the boundary but before it gets implemented at | |
6191 | least allow accessing the array elements. */ | |
6192 | if (attr && attr->form == DW_FORM_block1) | |
6193 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
6194 | ||
39cbfefa DJ |
6195 | name = dwarf2_name (die, cu); |
6196 | if (name) | |
6197 | TYPE_NAME (range_type) = name; | |
a02abb62 | 6198 | |
e142c38c | 6199 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
6200 | if (attr) |
6201 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
6202 | ||
b4ba55a1 JB |
6203 | set_descriptive_type (range_type, die, cu); |
6204 | ||
f792889a | 6205 | return set_die_type (die, range_type, cu); |
a02abb62 JB |
6206 | } |
6207 | ||
f792889a | 6208 | static struct type * |
81a17f79 JB |
6209 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
6210 | { | |
6211 | struct type *type; | |
81a17f79 | 6212 | |
81a17f79 JB |
6213 | /* For now, we only support the C meaning of an unspecified type: void. */ |
6214 | ||
0114d602 DJ |
6215 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
6216 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 6217 | |
f792889a | 6218 | return set_die_type (die, type, cu); |
81a17f79 | 6219 | } |
a02abb62 | 6220 | |
51545339 DJ |
6221 | /* Trivial hash function for die_info: the hash value of a DIE |
6222 | is its offset in .debug_info for this objfile. */ | |
6223 | ||
6224 | static hashval_t | |
6225 | die_hash (const void *item) | |
6226 | { | |
6227 | const struct die_info *die = item; | |
9a619af0 | 6228 | |
51545339 DJ |
6229 | return die->offset; |
6230 | } | |
6231 | ||
6232 | /* Trivial comparison function for die_info structures: two DIEs | |
6233 | are equal if they have the same offset. */ | |
6234 | ||
6235 | static int | |
6236 | die_eq (const void *item_lhs, const void *item_rhs) | |
6237 | { | |
6238 | const struct die_info *die_lhs = item_lhs; | |
6239 | const struct die_info *die_rhs = item_rhs; | |
9a619af0 | 6240 | |
51545339 DJ |
6241 | return die_lhs->offset == die_rhs->offset; |
6242 | } | |
6243 | ||
c906108c SS |
6244 | /* Read a whole compilation unit into a linked list of dies. */ |
6245 | ||
f9aca02d | 6246 | static struct die_info * |
93311388 | 6247 | read_comp_unit (gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 6248 | { |
93311388 DE |
6249 | struct die_reader_specs reader_specs; |
6250 | ||
348e048f | 6251 | gdb_assert (cu->die_hash == NULL); |
51545339 DJ |
6252 | cu->die_hash |
6253 | = htab_create_alloc_ex (cu->header.length / 12, | |
6254 | die_hash, | |
6255 | die_eq, | |
6256 | NULL, | |
6257 | &cu->comp_unit_obstack, | |
6258 | hashtab_obstack_allocate, | |
6259 | dummy_obstack_deallocate); | |
6260 | ||
93311388 DE |
6261 | init_cu_die_reader (&reader_specs, cu); |
6262 | ||
6263 | return read_die_and_children (&reader_specs, info_ptr, &info_ptr, NULL); | |
639d11d3 DC |
6264 | } |
6265 | ||
d97bc12b DE |
6266 | /* Main entry point for reading a DIE and all children. |
6267 | Read the DIE and dump it if requested. */ | |
6268 | ||
6269 | static struct die_info * | |
93311388 DE |
6270 | read_die_and_children (const struct die_reader_specs *reader, |
6271 | gdb_byte *info_ptr, | |
d97bc12b DE |
6272 | gdb_byte **new_info_ptr, |
6273 | struct die_info *parent) | |
6274 | { | |
93311388 | 6275 | struct die_info *result = read_die_and_children_1 (reader, info_ptr, |
d97bc12b DE |
6276 | new_info_ptr, parent); |
6277 | ||
6278 | if (dwarf2_die_debug) | |
6279 | { | |
348e048f DE |
6280 | fprintf_unfiltered (gdb_stdlog, |
6281 | "\nRead die from %s of %s:\n", | |
6282 | reader->buffer == dwarf2_per_objfile->info.buffer | |
6283 | ? ".debug_info" | |
6284 | : reader->buffer == dwarf2_per_objfile->types.buffer | |
6285 | ? ".debug_types" | |
6286 | : "unknown section", | |
6287 | reader->abfd->filename); | |
d97bc12b DE |
6288 | dump_die (result, dwarf2_die_debug); |
6289 | } | |
6290 | ||
6291 | return result; | |
6292 | } | |
6293 | ||
639d11d3 DC |
6294 | /* Read a single die and all its descendents. Set the die's sibling |
6295 | field to NULL; set other fields in the die correctly, and set all | |
6296 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
6297 | location of the info_ptr after reading all of those dies. PARENT | |
6298 | is the parent of the die in question. */ | |
6299 | ||
6300 | static struct die_info * | |
93311388 DE |
6301 | read_die_and_children_1 (const struct die_reader_specs *reader, |
6302 | gdb_byte *info_ptr, | |
d97bc12b DE |
6303 | gdb_byte **new_info_ptr, |
6304 | struct die_info *parent) | |
639d11d3 DC |
6305 | { |
6306 | struct die_info *die; | |
fe1b8b76 | 6307 | gdb_byte *cur_ptr; |
639d11d3 DC |
6308 | int has_children; |
6309 | ||
93311388 | 6310 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
6311 | if (die == NULL) |
6312 | { | |
6313 | *new_info_ptr = cur_ptr; | |
6314 | return NULL; | |
6315 | } | |
93311388 | 6316 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
6317 | |
6318 | if (has_children) | |
348e048f | 6319 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
6320 | else |
6321 | { | |
6322 | die->child = NULL; | |
6323 | *new_info_ptr = cur_ptr; | |
6324 | } | |
6325 | ||
6326 | die->sibling = NULL; | |
6327 | die->parent = parent; | |
6328 | return die; | |
6329 | } | |
6330 | ||
6331 | /* Read a die, all of its descendents, and all of its siblings; set | |
6332 | all of the fields of all of the dies correctly. Arguments are as | |
6333 | in read_die_and_children. */ | |
6334 | ||
6335 | static struct die_info * | |
93311388 DE |
6336 | read_die_and_siblings (const struct die_reader_specs *reader, |
6337 | gdb_byte *info_ptr, | |
fe1b8b76 | 6338 | gdb_byte **new_info_ptr, |
639d11d3 DC |
6339 | struct die_info *parent) |
6340 | { | |
6341 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 6342 | gdb_byte *cur_ptr; |
639d11d3 | 6343 | |
c906108c | 6344 | cur_ptr = info_ptr; |
639d11d3 DC |
6345 | first_die = last_sibling = NULL; |
6346 | ||
6347 | while (1) | |
c906108c | 6348 | { |
639d11d3 | 6349 | struct die_info *die |
93311388 | 6350 | = read_die_and_children_1 (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 6351 | |
1d325ec1 | 6352 | if (die == NULL) |
c906108c | 6353 | { |
639d11d3 DC |
6354 | *new_info_ptr = cur_ptr; |
6355 | return first_die; | |
c906108c | 6356 | } |
1d325ec1 DJ |
6357 | |
6358 | if (!first_die) | |
6359 | first_die = die; | |
c906108c | 6360 | else |
1d325ec1 DJ |
6361 | last_sibling->sibling = die; |
6362 | ||
6363 | last_sibling = die; | |
c906108c | 6364 | } |
c906108c SS |
6365 | } |
6366 | ||
93311388 DE |
6367 | /* Read the die from the .debug_info section buffer. Set DIEP to |
6368 | point to a newly allocated die with its information, except for its | |
6369 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
6370 | whether the die has children or not. */ | |
6371 | ||
6372 | static gdb_byte * | |
6373 | read_full_die (const struct die_reader_specs *reader, | |
6374 | struct die_info **diep, gdb_byte *info_ptr, | |
6375 | int *has_children) | |
6376 | { | |
6377 | unsigned int abbrev_number, bytes_read, i, offset; | |
6378 | struct abbrev_info *abbrev; | |
6379 | struct die_info *die; | |
6380 | struct dwarf2_cu *cu = reader->cu; | |
6381 | bfd *abfd = reader->abfd; | |
6382 | ||
6383 | offset = info_ptr - reader->buffer; | |
6384 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6385 | info_ptr += bytes_read; | |
6386 | if (!abbrev_number) | |
6387 | { | |
6388 | *diep = NULL; | |
6389 | *has_children = 0; | |
6390 | return info_ptr; | |
6391 | } | |
6392 | ||
6393 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
6394 | if (!abbrev) | |
348e048f DE |
6395 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
6396 | abbrev_number, | |
6397 | bfd_get_filename (abfd)); | |
6398 | ||
93311388 DE |
6399 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
6400 | die->offset = offset; | |
6401 | die->tag = abbrev->tag; | |
6402 | die->abbrev = abbrev_number; | |
6403 | ||
6404 | die->num_attrs = abbrev->num_attrs; | |
6405 | ||
6406 | for (i = 0; i < abbrev->num_attrs; ++i) | |
6407 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
6408 | abfd, info_ptr, cu); | |
6409 | ||
6410 | *diep = die; | |
6411 | *has_children = abbrev->has_children; | |
6412 | return info_ptr; | |
6413 | } | |
6414 | ||
c906108c SS |
6415 | /* In DWARF version 2, the description of the debugging information is |
6416 | stored in a separate .debug_abbrev section. Before we read any | |
6417 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
6418 | in a hash table. This function also sets flags in CU describing |
6419 | the data found in the abbrev table. */ | |
c906108c SS |
6420 | |
6421 | static void | |
e7c27a73 | 6422 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 6423 | { |
e7c27a73 | 6424 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 6425 | gdb_byte *abbrev_ptr; |
c906108c SS |
6426 | struct abbrev_info *cur_abbrev; |
6427 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
6428 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
6429 | struct attr_abbrev *cur_attrs; |
6430 | unsigned int allocated_attrs; | |
c906108c | 6431 | |
57349743 | 6432 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
6433 | obstack_init (&cu->abbrev_obstack); |
6434 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
6435 | (ABBREV_HASH_SIZE | |
6436 | * sizeof (struct abbrev_info *))); | |
6437 | memset (cu->dwarf2_abbrevs, 0, | |
6438 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 6439 | |
be391dca TT |
6440 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
6441 | &dwarf2_per_objfile->abbrev); | |
dce234bc | 6442 | abbrev_ptr = dwarf2_per_objfile->abbrev.buffer + cu_header->abbrev_offset; |
c906108c SS |
6443 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
6444 | abbrev_ptr += bytes_read; | |
6445 | ||
f3dd6933 DJ |
6446 | allocated_attrs = ATTR_ALLOC_CHUNK; |
6447 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6448 | ||
c906108c SS |
6449 | /* loop until we reach an abbrev number of 0 */ |
6450 | while (abbrev_number) | |
6451 | { | |
f3dd6933 | 6452 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
6453 | |
6454 | /* read in abbrev header */ | |
6455 | cur_abbrev->number = abbrev_number; | |
6456 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
6457 | abbrev_ptr += bytes_read; | |
6458 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
6459 | abbrev_ptr += 1; | |
6460 | ||
72bf9492 DJ |
6461 | if (cur_abbrev->tag == DW_TAG_namespace) |
6462 | cu->has_namespace_info = 1; | |
6463 | ||
c906108c SS |
6464 | /* now read in declarations */ |
6465 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
6466 | abbrev_ptr += bytes_read; | |
6467 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
6468 | abbrev_ptr += bytes_read; | |
6469 | while (abbrev_name) | |
6470 | { | |
f3dd6933 | 6471 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 6472 | { |
f3dd6933 DJ |
6473 | allocated_attrs += ATTR_ALLOC_CHUNK; |
6474 | cur_attrs | |
6475 | = xrealloc (cur_attrs, (allocated_attrs | |
6476 | * sizeof (struct attr_abbrev))); | |
c906108c | 6477 | } |
ae038cb0 DJ |
6478 | |
6479 | /* Record whether this compilation unit might have | |
6480 | inter-compilation-unit references. If we don't know what form | |
6481 | this attribute will have, then it might potentially be a | |
6482 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
6483 | references. */ | |
6484 | ||
6485 | if (abbrev_form == DW_FORM_ref_addr | |
6486 | || abbrev_form == DW_FORM_indirect) | |
6487 | cu->has_form_ref_addr = 1; | |
6488 | ||
f3dd6933 DJ |
6489 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
6490 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
6491 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
6492 | abbrev_ptr += bytes_read; | |
6493 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
6494 | abbrev_ptr += bytes_read; | |
6495 | } | |
6496 | ||
f3dd6933 DJ |
6497 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
6498 | (cur_abbrev->num_attrs | |
6499 | * sizeof (struct attr_abbrev))); | |
6500 | memcpy (cur_abbrev->attrs, cur_attrs, | |
6501 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
6502 | ||
c906108c | 6503 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
6504 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
6505 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
6506 | |
6507 | /* Get next abbreviation. | |
6508 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
6509 | always properly terminated with an abbrev number of 0. |
6510 | Exit loop if we encounter an abbreviation which we have | |
6511 | already read (which means we are about to read the abbreviations | |
6512 | for the next compile unit) or if the end of the abbreviation | |
6513 | table is reached. */ | |
dce234bc PP |
6514 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev.buffer) |
6515 | >= dwarf2_per_objfile->abbrev.size) | |
c906108c SS |
6516 | break; |
6517 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
6518 | abbrev_ptr += bytes_read; | |
e7c27a73 | 6519 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
6520 | break; |
6521 | } | |
f3dd6933 DJ |
6522 | |
6523 | xfree (cur_attrs); | |
c906108c SS |
6524 | } |
6525 | ||
f3dd6933 | 6526 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 6527 | |
c906108c | 6528 | static void |
f3dd6933 | 6529 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 6530 | { |
f3dd6933 | 6531 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 6532 | |
f3dd6933 DJ |
6533 | obstack_free (&cu->abbrev_obstack, NULL); |
6534 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
6535 | } |
6536 | ||
6537 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
6538 | ||
6539 | static struct abbrev_info * | |
e7c27a73 | 6540 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
6541 | { |
6542 | unsigned int hash_number; | |
6543 | struct abbrev_info *abbrev; | |
6544 | ||
6545 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 6546 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
6547 | |
6548 | while (abbrev) | |
6549 | { | |
6550 | if (abbrev->number == number) | |
6551 | return abbrev; | |
6552 | else | |
6553 | abbrev = abbrev->next; | |
6554 | } | |
6555 | return NULL; | |
6556 | } | |
6557 | ||
72bf9492 DJ |
6558 | /* Returns nonzero if TAG represents a type that we might generate a partial |
6559 | symbol for. */ | |
6560 | ||
6561 | static int | |
6562 | is_type_tag_for_partial (int tag) | |
6563 | { | |
6564 | switch (tag) | |
6565 | { | |
6566 | #if 0 | |
6567 | /* Some types that would be reasonable to generate partial symbols for, | |
6568 | that we don't at present. */ | |
6569 | case DW_TAG_array_type: | |
6570 | case DW_TAG_file_type: | |
6571 | case DW_TAG_ptr_to_member_type: | |
6572 | case DW_TAG_set_type: | |
6573 | case DW_TAG_string_type: | |
6574 | case DW_TAG_subroutine_type: | |
6575 | #endif | |
6576 | case DW_TAG_base_type: | |
6577 | case DW_TAG_class_type: | |
680b30c7 | 6578 | case DW_TAG_interface_type: |
72bf9492 DJ |
6579 | case DW_TAG_enumeration_type: |
6580 | case DW_TAG_structure_type: | |
6581 | case DW_TAG_subrange_type: | |
6582 | case DW_TAG_typedef: | |
6583 | case DW_TAG_union_type: | |
6584 | return 1; | |
6585 | default: | |
6586 | return 0; | |
6587 | } | |
6588 | } | |
6589 | ||
6590 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
6591 | ||
6592 | static struct partial_die_info * | |
93311388 DE |
6593 | load_partial_dies (bfd *abfd, gdb_byte *buffer, gdb_byte *info_ptr, |
6594 | int building_psymtab, struct dwarf2_cu *cu) | |
72bf9492 DJ |
6595 | { |
6596 | struct partial_die_info *part_die; | |
6597 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
6598 | struct abbrev_info *abbrev; | |
6599 | unsigned int bytes_read; | |
5afb4e99 | 6600 | unsigned int load_all = 0; |
72bf9492 DJ |
6601 | |
6602 | int nesting_level = 1; | |
6603 | ||
6604 | parent_die = NULL; | |
6605 | last_die = NULL; | |
6606 | ||
5afb4e99 DJ |
6607 | if (cu->per_cu && cu->per_cu->load_all_dies) |
6608 | load_all = 1; | |
6609 | ||
72bf9492 DJ |
6610 | cu->partial_dies |
6611 | = htab_create_alloc_ex (cu->header.length / 12, | |
6612 | partial_die_hash, | |
6613 | partial_die_eq, | |
6614 | NULL, | |
6615 | &cu->comp_unit_obstack, | |
6616 | hashtab_obstack_allocate, | |
6617 | dummy_obstack_deallocate); | |
6618 | ||
6619 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
6620 | sizeof (struct partial_die_info)); | |
6621 | ||
6622 | while (1) | |
6623 | { | |
6624 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
6625 | ||
6626 | /* A NULL abbrev means the end of a series of children. */ | |
6627 | if (abbrev == NULL) | |
6628 | { | |
6629 | if (--nesting_level == 0) | |
6630 | { | |
6631 | /* PART_DIE was probably the last thing allocated on the | |
6632 | comp_unit_obstack, so we could call obstack_free | |
6633 | here. We don't do that because the waste is small, | |
6634 | and will be cleaned up when we're done with this | |
6635 | compilation unit. This way, we're also more robust | |
6636 | against other users of the comp_unit_obstack. */ | |
6637 | return first_die; | |
6638 | } | |
6639 | info_ptr += bytes_read; | |
6640 | last_die = parent_die; | |
6641 | parent_die = parent_die->die_parent; | |
6642 | continue; | |
6643 | } | |
6644 | ||
5afb4e99 DJ |
6645 | /* Check whether this DIE is interesting enough to save. Normally |
6646 | we would not be interested in members here, but there may be | |
6647 | later variables referencing them via DW_AT_specification (for | |
6648 | static members). */ | |
6649 | if (!load_all | |
6650 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
6651 | && abbrev->tag != DW_TAG_enumerator |
6652 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 6653 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 6654 | && abbrev->tag != DW_TAG_variable |
5afb4e99 DJ |
6655 | && abbrev->tag != DW_TAG_namespace |
6656 | && abbrev->tag != DW_TAG_member) | |
72bf9492 DJ |
6657 | { |
6658 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 6659 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
72bf9492 DJ |
6660 | continue; |
6661 | } | |
6662 | ||
93311388 DE |
6663 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, abfd, |
6664 | buffer, info_ptr, cu); | |
72bf9492 DJ |
6665 | |
6666 | /* This two-pass algorithm for processing partial symbols has a | |
6667 | high cost in cache pressure. Thus, handle some simple cases | |
6668 | here which cover the majority of C partial symbols. DIEs | |
6669 | which neither have specification tags in them, nor could have | |
6670 | specification tags elsewhere pointing at them, can simply be | |
6671 | processed and discarded. | |
6672 | ||
6673 | This segment is also optional; scan_partial_symbols and | |
6674 | add_partial_symbol will handle these DIEs if we chain | |
6675 | them in normally. When compilers which do not emit large | |
6676 | quantities of duplicate debug information are more common, | |
6677 | this code can probably be removed. */ | |
6678 | ||
6679 | /* Any complete simple types at the top level (pretty much all | |
6680 | of them, for a language without namespaces), can be processed | |
6681 | directly. */ | |
6682 | if (parent_die == NULL | |
6683 | && part_die->has_specification == 0 | |
6684 | && part_die->is_declaration == 0 | |
6685 | && (part_die->tag == DW_TAG_typedef | |
6686 | || part_die->tag == DW_TAG_base_type | |
6687 | || part_die->tag == DW_TAG_subrange_type)) | |
6688 | { | |
6689 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 6690 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 DJ |
6691 | VAR_DOMAIN, LOC_TYPEDEF, |
6692 | &cu->objfile->static_psymbols, | |
6693 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
93311388 | 6694 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
6695 | continue; |
6696 | } | |
6697 | ||
6698 | /* If we're at the second level, and we're an enumerator, and | |
6699 | our parent has no specification (meaning possibly lives in a | |
6700 | namespace elsewhere), then we can add the partial symbol now | |
6701 | instead of queueing it. */ | |
6702 | if (part_die->tag == DW_TAG_enumerator | |
6703 | && parent_die != NULL | |
6704 | && parent_die->die_parent == NULL | |
6705 | && parent_die->tag == DW_TAG_enumeration_type | |
6706 | && parent_die->has_specification == 0) | |
6707 | { | |
6708 | if (part_die->name == NULL) | |
e2e0b3e5 | 6709 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 | 6710 | else if (building_psymtab) |
04a679b8 | 6711 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 6712 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
6713 | (cu->language == language_cplus |
6714 | || cu->language == language_java) | |
72bf9492 DJ |
6715 | ? &cu->objfile->global_psymbols |
6716 | : &cu->objfile->static_psymbols, | |
6717 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
6718 | ||
93311388 | 6719 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
6720 | continue; |
6721 | } | |
6722 | ||
6723 | /* We'll save this DIE so link it in. */ | |
6724 | part_die->die_parent = parent_die; | |
6725 | part_die->die_sibling = NULL; | |
6726 | part_die->die_child = NULL; | |
6727 | ||
6728 | if (last_die && last_die == parent_die) | |
6729 | last_die->die_child = part_die; | |
6730 | else if (last_die) | |
6731 | last_die->die_sibling = part_die; | |
6732 | ||
6733 | last_die = part_die; | |
6734 | ||
6735 | if (first_die == NULL) | |
6736 | first_die = part_die; | |
6737 | ||
6738 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
6739 | find interesting need to be in the hash table, because we | |
6740 | also have the parent/sibling/child chains; only those that we | |
6741 | might refer to by offset later during partial symbol reading. | |
6742 | ||
6743 | For now this means things that might have be the target of a | |
6744 | DW_AT_specification, DW_AT_abstract_origin, or | |
6745 | DW_AT_extension. DW_AT_extension will refer only to | |
6746 | namespaces; DW_AT_abstract_origin refers to functions (and | |
6747 | many things under the function DIE, but we do not recurse | |
6748 | into function DIEs during partial symbol reading) and | |
6749 | possibly variables as well; DW_AT_specification refers to | |
6750 | declarations. Declarations ought to have the DW_AT_declaration | |
6751 | flag. It happens that GCC forgets to put it in sometimes, but | |
6752 | only for functions, not for types. | |
6753 | ||
6754 | Adding more things than necessary to the hash table is harmless | |
6755 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
6756 | wasted time in find_partial_die, when we reread the compilation |
6757 | unit with load_all_dies set. */ | |
72bf9492 | 6758 | |
5afb4e99 DJ |
6759 | if (load_all |
6760 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
6761 | || abbrev->tag == DW_TAG_variable |
6762 | || abbrev->tag == DW_TAG_namespace | |
6763 | || part_die->is_declaration) | |
6764 | { | |
6765 | void **slot; | |
6766 | ||
6767 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
6768 | part_die->offset, INSERT); | |
6769 | *slot = part_die; | |
6770 | } | |
6771 | ||
6772 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
6773 | sizeof (struct partial_die_info)); | |
6774 | ||
6775 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 6776 | we have no reason to follow the children of structures; for other |
72bf9492 | 6777 | languages we have to, both so that we can get at method physnames |
bc30ff58 JB |
6778 | to infer fully qualified class names, and for DW_AT_specification. |
6779 | ||
6780 | For Ada, we need to scan the children of subprograms and lexical | |
6781 | blocks as well because Ada allows the definition of nested | |
6782 | entities that could be interesting for the debugger, such as | |
6783 | nested subprograms for instance. */ | |
72bf9492 | 6784 | if (last_die->has_children |
5afb4e99 DJ |
6785 | && (load_all |
6786 | || last_die->tag == DW_TAG_namespace | |
72bf9492 DJ |
6787 | || last_die->tag == DW_TAG_enumeration_type |
6788 | || (cu->language != language_c | |
6789 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 6790 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 6791 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
6792 | || last_die->tag == DW_TAG_union_type)) |
6793 | || (cu->language == language_ada | |
6794 | && (last_die->tag == DW_TAG_subprogram | |
6795 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
6796 | { |
6797 | nesting_level++; | |
6798 | parent_die = last_die; | |
6799 | continue; | |
6800 | } | |
6801 | ||
6802 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 6803 | info_ptr = locate_pdi_sibling (last_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
6804 | |
6805 | /* Back to the top, do it again. */ | |
6806 | } | |
6807 | } | |
6808 | ||
c906108c SS |
6809 | /* Read a minimal amount of information into the minimal die structure. */ |
6810 | ||
fe1b8b76 | 6811 | static gdb_byte * |
72bf9492 DJ |
6812 | read_partial_die (struct partial_die_info *part_die, |
6813 | struct abbrev_info *abbrev, | |
6814 | unsigned int abbrev_len, bfd *abfd, | |
93311388 DE |
6815 | gdb_byte *buffer, gdb_byte *info_ptr, |
6816 | struct dwarf2_cu *cu) | |
c906108c | 6817 | { |
fa238c03 | 6818 | unsigned int i; |
c906108c | 6819 | struct attribute attr; |
c5aa993b | 6820 | int has_low_pc_attr = 0; |
c906108c SS |
6821 | int has_high_pc_attr = 0; |
6822 | ||
72bf9492 | 6823 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 6824 | |
93311388 | 6825 | part_die->offset = info_ptr - buffer; |
72bf9492 DJ |
6826 | |
6827 | info_ptr += abbrev_len; | |
6828 | ||
6829 | if (abbrev == NULL) | |
6830 | return info_ptr; | |
6831 | ||
c906108c SS |
6832 | part_die->tag = abbrev->tag; |
6833 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
6834 | |
6835 | for (i = 0; i < abbrev->num_attrs; ++i) | |
6836 | { | |
e7c27a73 | 6837 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
6838 | |
6839 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 6840 | partial symbol table. */ |
c906108c SS |
6841 | switch (attr.name) |
6842 | { | |
6843 | case DW_AT_name: | |
71c25dea TT |
6844 | switch (part_die->tag) |
6845 | { | |
6846 | case DW_TAG_compile_unit: | |
348e048f | 6847 | case DW_TAG_type_unit: |
71c25dea TT |
6848 | /* Compilation units have a DW_AT_name that is a filename, not |
6849 | a source language identifier. */ | |
6850 | case DW_TAG_enumeration_type: | |
6851 | case DW_TAG_enumerator: | |
6852 | /* These tags always have simple identifiers already; no need | |
6853 | to canonicalize them. */ | |
6854 | part_die->name = DW_STRING (&attr); | |
6855 | break; | |
6856 | default: | |
6857 | part_die->name | |
6858 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
95519e0e | 6859 | &cu->objfile->objfile_obstack); |
71c25dea TT |
6860 | break; |
6861 | } | |
c906108c | 6862 | break; |
31ef98ae | 6863 | case DW_AT_linkage_name: |
c906108c | 6864 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
6865 | /* Note that both forms of linkage name might appear. We |
6866 | assume they will be the same, and we only store the last | |
6867 | one we see. */ | |
94af9270 KS |
6868 | if (cu->language == language_ada) |
6869 | part_die->name = DW_STRING (&attr); | |
c906108c SS |
6870 | break; |
6871 | case DW_AT_low_pc: | |
6872 | has_low_pc_attr = 1; | |
6873 | part_die->lowpc = DW_ADDR (&attr); | |
6874 | break; | |
6875 | case DW_AT_high_pc: | |
6876 | has_high_pc_attr = 1; | |
6877 | part_die->highpc = DW_ADDR (&attr); | |
6878 | break; | |
6879 | case DW_AT_location: | |
8e19ed76 PS |
6880 | /* Support the .debug_loc offsets */ |
6881 | if (attr_form_is_block (&attr)) | |
6882 | { | |
6883 | part_die->locdesc = DW_BLOCK (&attr); | |
6884 | } | |
3690dd37 | 6885 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 6886 | { |
4d3c2250 | 6887 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
6888 | } |
6889 | else | |
6890 | { | |
4d3c2250 KB |
6891 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
6892 | "partial symbol information"); | |
8e19ed76 | 6893 | } |
c906108c | 6894 | break; |
c906108c SS |
6895 | case DW_AT_external: |
6896 | part_die->is_external = DW_UNSND (&attr); | |
6897 | break; | |
6898 | case DW_AT_declaration: | |
6899 | part_die->is_declaration = DW_UNSND (&attr); | |
6900 | break; | |
6901 | case DW_AT_type: | |
6902 | part_die->has_type = 1; | |
6903 | break; | |
6904 | case DW_AT_abstract_origin: | |
6905 | case DW_AT_specification: | |
72bf9492 DJ |
6906 | case DW_AT_extension: |
6907 | part_die->has_specification = 1; | |
c764a876 | 6908 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
6909 | break; |
6910 | case DW_AT_sibling: | |
6911 | /* Ignore absolute siblings, they might point outside of | |
6912 | the current compile unit. */ | |
6913 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 6914 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 6915 | else |
93311388 | 6916 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr); |
c906108c | 6917 | break; |
fa4028e9 JB |
6918 | case DW_AT_byte_size: |
6919 | part_die->has_byte_size = 1; | |
6920 | break; | |
68511cec CES |
6921 | case DW_AT_calling_convention: |
6922 | /* DWARF doesn't provide a way to identify a program's source-level | |
6923 | entry point. DW_AT_calling_convention attributes are only meant | |
6924 | to describe functions' calling conventions. | |
6925 | ||
6926 | However, because it's a necessary piece of information in | |
6927 | Fortran, and because DW_CC_program is the only piece of debugging | |
6928 | information whose definition refers to a 'main program' at all, | |
6929 | several compilers have begun marking Fortran main programs with | |
6930 | DW_CC_program --- even when those functions use the standard | |
6931 | calling conventions. | |
6932 | ||
6933 | So until DWARF specifies a way to provide this information and | |
6934 | compilers pick up the new representation, we'll support this | |
6935 | practice. */ | |
6936 | if (DW_UNSND (&attr) == DW_CC_program | |
6937 | && cu->language == language_fortran) | |
6938 | set_main_name (part_die->name); | |
6939 | break; | |
c906108c SS |
6940 | default: |
6941 | break; | |
6942 | } | |
6943 | } | |
6944 | ||
c906108c SS |
6945 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
6946 | eliminate duplicate copies of functions and vtables and such. | |
6947 | The linker will arbitrarily choose one and discard the others. | |
6948 | The AT_*_pc values for such functions refer to local labels in | |
6949 | these sections. If the section from that file was discarded, the | |
6950 | labels are not in the output, so the relocs get a value of 0. | |
6951 | If this is a discarded function, mark the pc bounds as invalid, | |
6952 | so that GDB will ignore it. */ | |
6953 | if (has_low_pc_attr && has_high_pc_attr | |
6954 | && part_die->lowpc < part_die->highpc | |
6955 | && (part_die->lowpc != 0 | |
72dca2f5 | 6956 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 6957 | part_die->has_pc_info = 1; |
85cbf3d3 | 6958 | |
c906108c SS |
6959 | return info_ptr; |
6960 | } | |
6961 | ||
72bf9492 DJ |
6962 | /* Find a cached partial DIE at OFFSET in CU. */ |
6963 | ||
6964 | static struct partial_die_info * | |
c764a876 | 6965 | find_partial_die_in_comp_unit (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
6966 | { |
6967 | struct partial_die_info *lookup_die = NULL; | |
6968 | struct partial_die_info part_die; | |
6969 | ||
6970 | part_die.offset = offset; | |
6971 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
6972 | ||
72bf9492 DJ |
6973 | return lookup_die; |
6974 | } | |
6975 | ||
348e048f DE |
6976 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
6977 | except in the case of .debug_types DIEs which do not reference | |
6978 | outside their CU (they do however referencing other types via | |
6979 | DW_FORM_sig8). */ | |
72bf9492 DJ |
6980 | |
6981 | static struct partial_die_info * | |
c764a876 | 6982 | find_partial_die (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 | 6983 | { |
5afb4e99 DJ |
6984 | struct dwarf2_per_cu_data *per_cu = NULL; |
6985 | struct partial_die_info *pd = NULL; | |
72bf9492 | 6986 | |
348e048f DE |
6987 | if (cu->per_cu->from_debug_types) |
6988 | { | |
6989 | pd = find_partial_die_in_comp_unit (offset, cu); | |
6990 | if (pd != NULL) | |
6991 | return pd; | |
6992 | goto not_found; | |
6993 | } | |
6994 | ||
45452591 | 6995 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
6996 | { |
6997 | pd = find_partial_die_in_comp_unit (offset, cu); | |
6998 | if (pd != NULL) | |
6999 | return pd; | |
7000 | } | |
72bf9492 | 7001 | |
ae038cb0 DJ |
7002 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
7003 | ||
ae038cb0 DJ |
7004 | if (per_cu->cu == NULL) |
7005 | { | |
93311388 | 7006 | load_partial_comp_unit (per_cu, cu->objfile); |
ae038cb0 DJ |
7007 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
7008 | dwarf2_per_objfile->read_in_chain = per_cu; | |
7009 | } | |
7010 | ||
7011 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
7012 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
7013 | ||
7014 | if (pd == NULL && per_cu->load_all_dies == 0) | |
7015 | { | |
7016 | struct cleanup *back_to; | |
7017 | struct partial_die_info comp_unit_die; | |
7018 | struct abbrev_info *abbrev; | |
7019 | unsigned int bytes_read; | |
7020 | char *info_ptr; | |
7021 | ||
7022 | per_cu->load_all_dies = 1; | |
7023 | ||
7024 | /* Re-read the DIEs. */ | |
7025 | back_to = make_cleanup (null_cleanup, 0); | |
7026 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
7027 | { | |
7028 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
53d72f98 | 7029 | make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); |
5afb4e99 | 7030 | } |
dce234bc | 7031 | info_ptr = (dwarf2_per_objfile->info.buffer |
d00adf39 DE |
7032 | + per_cu->cu->header.offset |
7033 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
7034 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
7035 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
93311388 DE |
7036 | per_cu->cu->objfile->obfd, |
7037 | dwarf2_per_objfile->info.buffer, info_ptr, | |
5afb4e99 DJ |
7038 | per_cu->cu); |
7039 | if (comp_unit_die.has_children) | |
93311388 DE |
7040 | load_partial_dies (per_cu->cu->objfile->obfd, |
7041 | dwarf2_per_objfile->info.buffer, info_ptr, | |
7042 | 0, per_cu->cu); | |
5afb4e99 DJ |
7043 | do_cleanups (back_to); |
7044 | ||
7045 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
7046 | } | |
7047 | ||
348e048f DE |
7048 | not_found: |
7049 | ||
5afb4e99 DJ |
7050 | if (pd == NULL) |
7051 | internal_error (__FILE__, __LINE__, | |
c764a876 | 7052 | _("could not find partial DIE 0x%x in cache [from module %s]\n"), |
5afb4e99 DJ |
7053 | offset, bfd_get_filename (cu->objfile->obfd)); |
7054 | return pd; | |
72bf9492 DJ |
7055 | } |
7056 | ||
7057 | /* Adjust PART_DIE before generating a symbol for it. This function | |
7058 | may set the is_external flag or change the DIE's name. */ | |
7059 | ||
7060 | static void | |
7061 | fixup_partial_die (struct partial_die_info *part_die, | |
7062 | struct dwarf2_cu *cu) | |
7063 | { | |
7064 | /* If we found a reference attribute and the DIE has no name, try | |
7065 | to find a name in the referred to DIE. */ | |
7066 | ||
7067 | if (part_die->name == NULL && part_die->has_specification) | |
7068 | { | |
7069 | struct partial_die_info *spec_die; | |
72bf9492 | 7070 | |
10b3939b | 7071 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 7072 | |
10b3939b | 7073 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
7074 | |
7075 | if (spec_die->name) | |
7076 | { | |
7077 | part_die->name = spec_die->name; | |
7078 | ||
7079 | /* Copy DW_AT_external attribute if it is set. */ | |
7080 | if (spec_die->is_external) | |
7081 | part_die->is_external = spec_die->is_external; | |
7082 | } | |
7083 | } | |
7084 | ||
7085 | /* Set default names for some unnamed DIEs. */ | |
7086 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
7087 | || part_die->tag == DW_TAG_class_type)) | |
7088 | part_die->name = "(anonymous class)"; | |
7089 | ||
7090 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
7091 | part_die->name = "(anonymous namespace)"; | |
7092 | ||
7093 | if (part_die->tag == DW_TAG_structure_type | |
7094 | || part_die->tag == DW_TAG_class_type | |
7095 | || part_die->tag == DW_TAG_union_type) | |
7096 | guess_structure_name (part_die, cu); | |
7097 | } | |
7098 | ||
a8329558 | 7099 | /* Read an attribute value described by an attribute form. */ |
c906108c | 7100 | |
fe1b8b76 | 7101 | static gdb_byte * |
a8329558 | 7102 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 7103 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 7104 | struct dwarf2_cu *cu) |
c906108c | 7105 | { |
e7c27a73 | 7106 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
7107 | unsigned int bytes_read; |
7108 | struct dwarf_block *blk; | |
7109 | ||
a8329558 KW |
7110 | attr->form = form; |
7111 | switch (form) | |
c906108c | 7112 | { |
c906108c | 7113 | case DW_FORM_ref_addr: |
ae411497 TT |
7114 | if (cu->header.version == 2) |
7115 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); | |
7116 | else | |
7117 | DW_ADDR (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
7118 | info_ptr += bytes_read; | |
7119 | break; | |
7120 | case DW_FORM_addr: | |
e7c27a73 | 7121 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 7122 | info_ptr += bytes_read; |
c906108c SS |
7123 | break; |
7124 | case DW_FORM_block2: | |
7b5a2f43 | 7125 | blk = dwarf_alloc_block (cu); |
c906108c SS |
7126 | blk->size = read_2_bytes (abfd, info_ptr); |
7127 | info_ptr += 2; | |
7128 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
7129 | info_ptr += blk->size; | |
7130 | DW_BLOCK (attr) = blk; | |
7131 | break; | |
7132 | case DW_FORM_block4: | |
7b5a2f43 | 7133 | blk = dwarf_alloc_block (cu); |
c906108c SS |
7134 | blk->size = read_4_bytes (abfd, info_ptr); |
7135 | info_ptr += 4; | |
7136 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
7137 | info_ptr += blk->size; | |
7138 | DW_BLOCK (attr) = blk; | |
7139 | break; | |
7140 | case DW_FORM_data2: | |
7141 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
7142 | info_ptr += 2; | |
7143 | break; | |
7144 | case DW_FORM_data4: | |
7145 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
7146 | info_ptr += 4; | |
7147 | break; | |
7148 | case DW_FORM_data8: | |
7149 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
7150 | info_ptr += 8; | |
7151 | break; | |
2dc7f7b3 TT |
7152 | case DW_FORM_sec_offset: |
7153 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
7154 | info_ptr += bytes_read; | |
7155 | break; | |
c906108c SS |
7156 | case DW_FORM_string: |
7157 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
8285870a | 7158 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
7159 | info_ptr += bytes_read; |
7160 | break; | |
4bdf3d34 JJ |
7161 | case DW_FORM_strp: |
7162 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
7163 | &bytes_read); | |
8285870a | 7164 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
7165 | info_ptr += bytes_read; |
7166 | break; | |
2dc7f7b3 | 7167 | case DW_FORM_exprloc: |
c906108c | 7168 | case DW_FORM_block: |
7b5a2f43 | 7169 | blk = dwarf_alloc_block (cu); |
c906108c SS |
7170 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
7171 | info_ptr += bytes_read; | |
7172 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
7173 | info_ptr += blk->size; | |
7174 | DW_BLOCK (attr) = blk; | |
7175 | break; | |
7176 | case DW_FORM_block1: | |
7b5a2f43 | 7177 | blk = dwarf_alloc_block (cu); |
c906108c SS |
7178 | blk->size = read_1_byte (abfd, info_ptr); |
7179 | info_ptr += 1; | |
7180 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
7181 | info_ptr += blk->size; | |
7182 | DW_BLOCK (attr) = blk; | |
7183 | break; | |
7184 | case DW_FORM_data1: | |
7185 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
7186 | info_ptr += 1; | |
7187 | break; | |
7188 | case DW_FORM_flag: | |
7189 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
7190 | info_ptr += 1; | |
7191 | break; | |
2dc7f7b3 TT |
7192 | case DW_FORM_flag_present: |
7193 | DW_UNSND (attr) = 1; | |
7194 | break; | |
c906108c SS |
7195 | case DW_FORM_sdata: |
7196 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
7197 | info_ptr += bytes_read; | |
7198 | break; | |
7199 | case DW_FORM_udata: | |
7200 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7201 | info_ptr += bytes_read; | |
7202 | break; | |
7203 | case DW_FORM_ref1: | |
10b3939b | 7204 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
7205 | info_ptr += 1; |
7206 | break; | |
7207 | case DW_FORM_ref2: | |
10b3939b | 7208 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
7209 | info_ptr += 2; |
7210 | break; | |
7211 | case DW_FORM_ref4: | |
10b3939b | 7212 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
7213 | info_ptr += 4; |
7214 | break; | |
613e1657 | 7215 | case DW_FORM_ref8: |
10b3939b | 7216 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
7217 | info_ptr += 8; |
7218 | break; | |
348e048f DE |
7219 | case DW_FORM_sig8: |
7220 | /* Convert the signature to something we can record in DW_UNSND | |
7221 | for later lookup. | |
7222 | NOTE: This is NULL if the type wasn't found. */ | |
7223 | DW_SIGNATURED_TYPE (attr) = | |
7224 | lookup_signatured_type (cu->objfile, read_8_bytes (abfd, info_ptr)); | |
7225 | info_ptr += 8; | |
7226 | break; | |
c906108c | 7227 | case DW_FORM_ref_udata: |
10b3939b DJ |
7228 | DW_ADDR (attr) = (cu->header.offset |
7229 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
7230 | info_ptr += bytes_read; |
7231 | break; | |
c906108c | 7232 | case DW_FORM_indirect: |
a8329558 KW |
7233 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
7234 | info_ptr += bytes_read; | |
e7c27a73 | 7235 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 7236 | break; |
c906108c | 7237 | default: |
8a3fe4f8 | 7238 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
7239 | dwarf_form_name (form), |
7240 | bfd_get_filename (abfd)); | |
c906108c | 7241 | } |
28e94949 JB |
7242 | |
7243 | /* We have seen instances where the compiler tried to emit a byte | |
7244 | size attribute of -1 which ended up being encoded as an unsigned | |
7245 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
7246 | an object of this size seems pretty unlikely so we can relatively | |
7247 | safely treat these cases as if the size attribute was invalid and | |
7248 | treat them as zero by default. */ | |
7249 | if (attr->name == DW_AT_byte_size | |
7250 | && form == DW_FORM_data4 | |
7251 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
7252 | { |
7253 | complaint | |
7254 | (&symfile_complaints, | |
43bbcdc2 PH |
7255 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
7256 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
7257 | DW_UNSND (attr) = 0; |
7258 | } | |
28e94949 | 7259 | |
c906108c SS |
7260 | return info_ptr; |
7261 | } | |
7262 | ||
a8329558 KW |
7263 | /* Read an attribute described by an abbreviated attribute. */ |
7264 | ||
fe1b8b76 | 7265 | static gdb_byte * |
a8329558 | 7266 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 7267 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
7268 | { |
7269 | attr->name = abbrev->name; | |
e7c27a73 | 7270 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
7271 | } |
7272 | ||
c906108c SS |
7273 | /* read dwarf information from a buffer */ |
7274 | ||
7275 | static unsigned int | |
fe1b8b76 | 7276 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 7277 | { |
fe1b8b76 | 7278 | return bfd_get_8 (abfd, buf); |
c906108c SS |
7279 | } |
7280 | ||
7281 | static int | |
fe1b8b76 | 7282 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 7283 | { |
fe1b8b76 | 7284 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
7285 | } |
7286 | ||
7287 | static unsigned int | |
fe1b8b76 | 7288 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 7289 | { |
fe1b8b76 | 7290 | return bfd_get_16 (abfd, buf); |
c906108c SS |
7291 | } |
7292 | ||
7293 | static int | |
fe1b8b76 | 7294 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 7295 | { |
fe1b8b76 | 7296 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
7297 | } |
7298 | ||
7299 | static unsigned int | |
fe1b8b76 | 7300 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 7301 | { |
fe1b8b76 | 7302 | return bfd_get_32 (abfd, buf); |
c906108c SS |
7303 | } |
7304 | ||
7305 | static int | |
fe1b8b76 | 7306 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 7307 | { |
fe1b8b76 | 7308 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
7309 | } |
7310 | ||
93311388 | 7311 | static ULONGEST |
fe1b8b76 | 7312 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 7313 | { |
fe1b8b76 | 7314 | return bfd_get_64 (abfd, buf); |
c906108c SS |
7315 | } |
7316 | ||
7317 | static CORE_ADDR | |
fe1b8b76 | 7318 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 7319 | unsigned int *bytes_read) |
c906108c | 7320 | { |
e7c27a73 | 7321 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
7322 | CORE_ADDR retval = 0; |
7323 | ||
107d2387 | 7324 | if (cu_header->signed_addr_p) |
c906108c | 7325 | { |
107d2387 AC |
7326 | switch (cu_header->addr_size) |
7327 | { | |
7328 | case 2: | |
fe1b8b76 | 7329 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
7330 | break; |
7331 | case 4: | |
fe1b8b76 | 7332 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
7333 | break; |
7334 | case 8: | |
fe1b8b76 | 7335 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
7336 | break; |
7337 | default: | |
8e65ff28 | 7338 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7339 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 7340 | bfd_get_filename (abfd)); |
107d2387 AC |
7341 | } |
7342 | } | |
7343 | else | |
7344 | { | |
7345 | switch (cu_header->addr_size) | |
7346 | { | |
7347 | case 2: | |
fe1b8b76 | 7348 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
7349 | break; |
7350 | case 4: | |
fe1b8b76 | 7351 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
7352 | break; |
7353 | case 8: | |
fe1b8b76 | 7354 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
7355 | break; |
7356 | default: | |
8e65ff28 | 7357 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 7358 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 7359 | bfd_get_filename (abfd)); |
107d2387 | 7360 | } |
c906108c | 7361 | } |
64367e0a | 7362 | |
107d2387 AC |
7363 | *bytes_read = cu_header->addr_size; |
7364 | return retval; | |
c906108c SS |
7365 | } |
7366 | ||
f7ef9339 | 7367 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
7368 | specification allows the initial length to take up either 4 bytes |
7369 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
7370 | bytes describe the length and all offsets will be 8 bytes in length | |
7371 | instead of 4. | |
7372 | ||
f7ef9339 KB |
7373 | An older, non-standard 64-bit format is also handled by this |
7374 | function. The older format in question stores the initial length | |
7375 | as an 8-byte quantity without an escape value. Lengths greater | |
7376 | than 2^32 aren't very common which means that the initial 4 bytes | |
7377 | is almost always zero. Since a length value of zero doesn't make | |
7378 | sense for the 32-bit format, this initial zero can be considered to | |
7379 | be an escape value which indicates the presence of the older 64-bit | |
7380 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
7381 | greater than 4GB. If it becomes necessary to handle lengths |
7382 | somewhat larger than 4GB, we could allow other small values (such | |
7383 | as the non-sensical values of 1, 2, and 3) to also be used as | |
7384 | escape values indicating the presence of the old format. | |
f7ef9339 | 7385 | |
917c78fc MK |
7386 | The value returned via bytes_read should be used to increment the |
7387 | relevant pointer after calling read_initial_length(). | |
c764a876 | 7388 | |
613e1657 KB |
7389 | [ Note: read_initial_length() and read_offset() are based on the |
7390 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 7391 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
7392 | from: |
7393 | ||
f7ef9339 | 7394 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
7395 | |
7396 | This document is only a draft and is subject to change. (So beware.) | |
7397 | ||
f7ef9339 | 7398 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
7399 | determined empirically by examining 64-bit ELF files produced by |
7400 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
7401 | |
7402 | - Kevin, July 16, 2002 | |
613e1657 KB |
7403 | ] */ |
7404 | ||
7405 | static LONGEST | |
c764a876 | 7406 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 7407 | { |
fe1b8b76 | 7408 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 7409 | |
dd373385 | 7410 | if (length == 0xffffffff) |
613e1657 | 7411 | { |
fe1b8b76 | 7412 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 7413 | *bytes_read = 12; |
613e1657 | 7414 | } |
dd373385 | 7415 | else if (length == 0) |
f7ef9339 | 7416 | { |
dd373385 | 7417 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 7418 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 7419 | *bytes_read = 8; |
f7ef9339 | 7420 | } |
613e1657 KB |
7421 | else |
7422 | { | |
7423 | *bytes_read = 4; | |
613e1657 KB |
7424 | } |
7425 | ||
c764a876 DE |
7426 | return length; |
7427 | } | |
dd373385 | 7428 | |
c764a876 DE |
7429 | /* Cover function for read_initial_length. |
7430 | Returns the length of the object at BUF, and stores the size of the | |
7431 | initial length in *BYTES_READ and stores the size that offsets will be in | |
7432 | *OFFSET_SIZE. | |
7433 | If the initial length size is not equivalent to that specified in | |
7434 | CU_HEADER then issue a complaint. | |
7435 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 7436 | |
c764a876 DE |
7437 | static LONGEST |
7438 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
7439 | const struct comp_unit_head *cu_header, | |
7440 | unsigned int *bytes_read, | |
7441 | unsigned int *offset_size) | |
7442 | { | |
7443 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
7444 | ||
7445 | gdb_assert (cu_header->initial_length_size == 4 | |
7446 | || cu_header->initial_length_size == 8 | |
7447 | || cu_header->initial_length_size == 12); | |
7448 | ||
7449 | if (cu_header->initial_length_size != *bytes_read) | |
7450 | complaint (&symfile_complaints, | |
7451 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 7452 | |
c764a876 | 7453 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 7454 | return length; |
613e1657 KB |
7455 | } |
7456 | ||
7457 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 7458 | given by cu_header->offset_size. */ |
613e1657 KB |
7459 | |
7460 | static LONGEST | |
fe1b8b76 | 7461 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 7462 | unsigned int *bytes_read) |
c764a876 DE |
7463 | { |
7464 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 7465 | |
c764a876 DE |
7466 | *bytes_read = cu_header->offset_size; |
7467 | return offset; | |
7468 | } | |
7469 | ||
7470 | /* Read an offset from the data stream. */ | |
7471 | ||
7472 | static LONGEST | |
7473 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
7474 | { |
7475 | LONGEST retval = 0; | |
7476 | ||
c764a876 | 7477 | switch (offset_size) |
613e1657 KB |
7478 | { |
7479 | case 4: | |
fe1b8b76 | 7480 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
7481 | break; |
7482 | case 8: | |
fe1b8b76 | 7483 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
7484 | break; |
7485 | default: | |
8e65ff28 | 7486 | internal_error (__FILE__, __LINE__, |
c764a876 | 7487 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 7488 | bfd_get_filename (abfd)); |
613e1657 KB |
7489 | } |
7490 | ||
917c78fc | 7491 | return retval; |
613e1657 KB |
7492 | } |
7493 | ||
fe1b8b76 JB |
7494 | static gdb_byte * |
7495 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
7496 | { |
7497 | /* If the size of a host char is 8 bits, we can return a pointer | |
7498 | to the buffer, otherwise we have to copy the data to a buffer | |
7499 | allocated on the temporary obstack. */ | |
4bdf3d34 | 7500 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 7501 | return buf; |
c906108c SS |
7502 | } |
7503 | ||
7504 | static char * | |
fe1b8b76 | 7505 | read_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
7506 | { |
7507 | /* If the size of a host char is 8 bits, we can return a pointer | |
7508 | to the string, otherwise we have to copy the string to a buffer | |
7509 | allocated on the temporary obstack. */ | |
4bdf3d34 | 7510 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
7511 | if (*buf == '\0') |
7512 | { | |
7513 | *bytes_read_ptr = 1; | |
7514 | return NULL; | |
7515 | } | |
fe1b8b76 JB |
7516 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
7517 | return (char *) buf; | |
4bdf3d34 JJ |
7518 | } |
7519 | ||
7520 | static char * | |
fe1b8b76 | 7521 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
7522 | const struct comp_unit_head *cu_header, |
7523 | unsigned int *bytes_read_ptr) | |
7524 | { | |
c764a876 | 7525 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); |
c906108c | 7526 | |
be391dca | 7527 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 7528 | if (dwarf2_per_objfile->str.buffer == NULL) |
c906108c | 7529 | { |
8a3fe4f8 | 7530 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 7531 | bfd_get_filename (abfd)); |
4bdf3d34 | 7532 | return NULL; |
c906108c | 7533 | } |
dce234bc | 7534 | if (str_offset >= dwarf2_per_objfile->str.size) |
c906108c | 7535 | { |
8a3fe4f8 | 7536 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 7537 | bfd_get_filename (abfd)); |
c906108c SS |
7538 | return NULL; |
7539 | } | |
4bdf3d34 | 7540 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 7541 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 7542 | return NULL; |
dce234bc | 7543 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
7544 | } |
7545 | ||
ce5d95e1 | 7546 | static unsigned long |
fe1b8b76 | 7547 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 7548 | { |
ce5d95e1 JB |
7549 | unsigned long result; |
7550 | unsigned int num_read; | |
c906108c SS |
7551 | int i, shift; |
7552 | unsigned char byte; | |
7553 | ||
7554 | result = 0; | |
7555 | shift = 0; | |
7556 | num_read = 0; | |
7557 | i = 0; | |
7558 | while (1) | |
7559 | { | |
fe1b8b76 | 7560 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
7561 | buf++; |
7562 | num_read++; | |
ce5d95e1 | 7563 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
7564 | if ((byte & 128) == 0) |
7565 | { | |
7566 | break; | |
7567 | } | |
7568 | shift += 7; | |
7569 | } | |
7570 | *bytes_read_ptr = num_read; | |
7571 | return result; | |
7572 | } | |
7573 | ||
ce5d95e1 | 7574 | static long |
fe1b8b76 | 7575 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 7576 | { |
ce5d95e1 | 7577 | long result; |
77e0b926 | 7578 | int i, shift, num_read; |
c906108c SS |
7579 | unsigned char byte; |
7580 | ||
7581 | result = 0; | |
7582 | shift = 0; | |
c906108c SS |
7583 | num_read = 0; |
7584 | i = 0; | |
7585 | while (1) | |
7586 | { | |
fe1b8b76 | 7587 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
7588 | buf++; |
7589 | num_read++; | |
ce5d95e1 | 7590 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
7591 | shift += 7; |
7592 | if ((byte & 128) == 0) | |
7593 | { | |
7594 | break; | |
7595 | } | |
7596 | } | |
77e0b926 DJ |
7597 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
7598 | result |= -(((long)1) << shift); | |
c906108c SS |
7599 | *bytes_read_ptr = num_read; |
7600 | return result; | |
7601 | } | |
7602 | ||
4bb7a0a7 DJ |
7603 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
7604 | ||
fe1b8b76 JB |
7605 | static gdb_byte * |
7606 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
7607 | { |
7608 | int byte; | |
7609 | ||
7610 | while (1) | |
7611 | { | |
fe1b8b76 | 7612 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
7613 | buf++; |
7614 | if ((byte & 128) == 0) | |
7615 | return buf; | |
7616 | } | |
7617 | } | |
7618 | ||
c906108c | 7619 | static void |
e142c38c | 7620 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
7621 | { |
7622 | switch (lang) | |
7623 | { | |
7624 | case DW_LANG_C89: | |
76bee0cc | 7625 | case DW_LANG_C99: |
c906108c | 7626 | case DW_LANG_C: |
e142c38c | 7627 | cu->language = language_c; |
c906108c SS |
7628 | break; |
7629 | case DW_LANG_C_plus_plus: | |
e142c38c | 7630 | cu->language = language_cplus; |
c906108c | 7631 | break; |
6aecb9c2 JB |
7632 | case DW_LANG_D: |
7633 | cu->language = language_d; | |
7634 | break; | |
c906108c SS |
7635 | case DW_LANG_Fortran77: |
7636 | case DW_LANG_Fortran90: | |
b21b22e0 | 7637 | case DW_LANG_Fortran95: |
e142c38c | 7638 | cu->language = language_fortran; |
c906108c SS |
7639 | break; |
7640 | case DW_LANG_Mips_Assembler: | |
e142c38c | 7641 | cu->language = language_asm; |
c906108c | 7642 | break; |
bebd888e | 7643 | case DW_LANG_Java: |
e142c38c | 7644 | cu->language = language_java; |
bebd888e | 7645 | break; |
c906108c | 7646 | case DW_LANG_Ada83: |
8aaf0b47 | 7647 | case DW_LANG_Ada95: |
bc5f45f8 JB |
7648 | cu->language = language_ada; |
7649 | break; | |
72019c9c GM |
7650 | case DW_LANG_Modula2: |
7651 | cu->language = language_m2; | |
7652 | break; | |
fe8e67fd PM |
7653 | case DW_LANG_Pascal83: |
7654 | cu->language = language_pascal; | |
7655 | break; | |
22566fbd DJ |
7656 | case DW_LANG_ObjC: |
7657 | cu->language = language_objc; | |
7658 | break; | |
c906108c SS |
7659 | case DW_LANG_Cobol74: |
7660 | case DW_LANG_Cobol85: | |
c906108c | 7661 | default: |
e142c38c | 7662 | cu->language = language_minimal; |
c906108c SS |
7663 | break; |
7664 | } | |
e142c38c | 7665 | cu->language_defn = language_def (cu->language); |
c906108c SS |
7666 | } |
7667 | ||
7668 | /* Return the named attribute or NULL if not there. */ | |
7669 | ||
7670 | static struct attribute * | |
e142c38c | 7671 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
7672 | { |
7673 | unsigned int i; | |
7674 | struct attribute *spec = NULL; | |
7675 | ||
7676 | for (i = 0; i < die->num_attrs; ++i) | |
7677 | { | |
7678 | if (die->attrs[i].name == name) | |
10b3939b | 7679 | return &die->attrs[i]; |
c906108c SS |
7680 | if (die->attrs[i].name == DW_AT_specification |
7681 | || die->attrs[i].name == DW_AT_abstract_origin) | |
7682 | spec = &die->attrs[i]; | |
7683 | } | |
c906108c | 7684 | |
10b3939b | 7685 | if (spec) |
f2f0e013 DJ |
7686 | { |
7687 | die = follow_die_ref (die, spec, &cu); | |
7688 | return dwarf2_attr (die, name, cu); | |
7689 | } | |
c5aa993b | 7690 | |
c906108c SS |
7691 | return NULL; |
7692 | } | |
7693 | ||
348e048f DE |
7694 | /* Return the named attribute or NULL if not there, |
7695 | but do not follow DW_AT_specification, etc. | |
7696 | This is for use in contexts where we're reading .debug_types dies. | |
7697 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
7698 | back up the chain, and we want to go down. */ | |
7699 | ||
7700 | static struct attribute * | |
7701 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
7702 | struct dwarf2_cu *cu) | |
7703 | { | |
7704 | unsigned int i; | |
7705 | ||
7706 | for (i = 0; i < die->num_attrs; ++i) | |
7707 | if (die->attrs[i].name == name) | |
7708 | return &die->attrs[i]; | |
7709 | ||
7710 | return NULL; | |
7711 | } | |
7712 | ||
05cf31d1 JB |
7713 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
7714 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 7715 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
7716 | |
7717 | static int | |
7718 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
7719 | { | |
7720 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
7721 | ||
7722 | return (attr && DW_UNSND (attr)); | |
7723 | } | |
7724 | ||
3ca72b44 | 7725 | static int |
e142c38c | 7726 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 7727 | { |
05cf31d1 JB |
7728 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
7729 | which value is non-zero. However, we have to be careful with | |
7730 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
7731 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
7732 | end up accidently finding a declaration attribute that belongs | |
7733 | to a different DIE referenced by the specification attribute, | |
7734 | even though the given DIE does not have a declaration attribute. */ | |
7735 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
7736 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
7737 | } |
7738 | ||
63d06c5c | 7739 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 7740 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
7741 | containing the return value on output. If there is no |
7742 | specification, but there is an abstract origin, that is | |
7743 | returned. */ | |
63d06c5c DC |
7744 | |
7745 | static struct die_info * | |
f2f0e013 | 7746 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 7747 | { |
f2f0e013 DJ |
7748 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
7749 | *spec_cu); | |
63d06c5c | 7750 | |
edb3359d DJ |
7751 | if (spec_attr == NULL) |
7752 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
7753 | ||
63d06c5c DC |
7754 | if (spec_attr == NULL) |
7755 | return NULL; | |
7756 | else | |
f2f0e013 | 7757 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 7758 | } |
c906108c | 7759 | |
debd256d JB |
7760 | /* Free the line_header structure *LH, and any arrays and strings it |
7761 | refers to. */ | |
7762 | static void | |
7763 | free_line_header (struct line_header *lh) | |
7764 | { | |
7765 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 7766 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
7767 | |
7768 | /* Remember that all the lh->file_names[i].name pointers are | |
7769 | pointers into debug_line_buffer, and don't need to be freed. */ | |
7770 | if (lh->file_names) | |
a8bc7b56 | 7771 | xfree (lh->file_names); |
debd256d JB |
7772 | |
7773 | /* Similarly for the include directory names. */ | |
7774 | if (lh->include_dirs) | |
a8bc7b56 | 7775 | xfree (lh->include_dirs); |
debd256d | 7776 | |
a8bc7b56 | 7777 | xfree (lh); |
debd256d JB |
7778 | } |
7779 | ||
7780 | ||
7781 | /* Add an entry to LH's include directory table. */ | |
7782 | static void | |
7783 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 7784 | { |
debd256d JB |
7785 | /* Grow the array if necessary. */ |
7786 | if (lh->include_dirs_size == 0) | |
c5aa993b | 7787 | { |
debd256d JB |
7788 | lh->include_dirs_size = 1; /* for testing */ |
7789 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
7790 | * sizeof (*lh->include_dirs)); | |
7791 | } | |
7792 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
7793 | { | |
7794 | lh->include_dirs_size *= 2; | |
7795 | lh->include_dirs = xrealloc (lh->include_dirs, | |
7796 | (lh->include_dirs_size | |
7797 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 7798 | } |
c906108c | 7799 | |
debd256d JB |
7800 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
7801 | } | |
7802 | ||
7803 | ||
7804 | /* Add an entry to LH's file name table. */ | |
7805 | static void | |
7806 | add_file_name (struct line_header *lh, | |
7807 | char *name, | |
7808 | unsigned int dir_index, | |
7809 | unsigned int mod_time, | |
7810 | unsigned int length) | |
7811 | { | |
7812 | struct file_entry *fe; | |
7813 | ||
7814 | /* Grow the array if necessary. */ | |
7815 | if (lh->file_names_size == 0) | |
7816 | { | |
7817 | lh->file_names_size = 1; /* for testing */ | |
7818 | lh->file_names = xmalloc (lh->file_names_size | |
7819 | * sizeof (*lh->file_names)); | |
7820 | } | |
7821 | else if (lh->num_file_names >= lh->file_names_size) | |
7822 | { | |
7823 | lh->file_names_size *= 2; | |
7824 | lh->file_names = xrealloc (lh->file_names, | |
7825 | (lh->file_names_size | |
7826 | * sizeof (*lh->file_names))); | |
7827 | } | |
7828 | ||
7829 | fe = &lh->file_names[lh->num_file_names++]; | |
7830 | fe->name = name; | |
7831 | fe->dir_index = dir_index; | |
7832 | fe->mod_time = mod_time; | |
7833 | fe->length = length; | |
aaa75496 | 7834 | fe->included_p = 0; |
cb1df416 | 7835 | fe->symtab = NULL; |
debd256d JB |
7836 | } |
7837 | ||
7838 | ||
7839 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
7840 | .debug_line, according to the endianness of ABFD. Return a pointer |
7841 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
7842 | |
7843 | NOTE: the strings in the include directory and file name tables of | |
7844 | the returned object point into debug_line_buffer, and must not be | |
7845 | freed. */ | |
7846 | static struct line_header * | |
7847 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 7848 | struct dwarf2_cu *cu) |
debd256d JB |
7849 | { |
7850 | struct cleanup *back_to; | |
7851 | struct line_header *lh; | |
fe1b8b76 | 7852 | gdb_byte *line_ptr; |
c764a876 | 7853 | unsigned int bytes_read, offset_size; |
debd256d JB |
7854 | int i; |
7855 | char *cur_dir, *cur_file; | |
7856 | ||
be391dca | 7857 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->line); |
dce234bc | 7858 | if (dwarf2_per_objfile->line.buffer == NULL) |
debd256d | 7859 | { |
e2e0b3e5 | 7860 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
7861 | return 0; |
7862 | } | |
7863 | ||
a738430d MK |
7864 | /* Make sure that at least there's room for the total_length field. |
7865 | That could be 12 bytes long, but we're just going to fudge that. */ | |
dce234bc | 7866 | if (offset + 4 >= dwarf2_per_objfile->line.size) |
debd256d | 7867 | { |
4d3c2250 | 7868 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
7869 | return 0; |
7870 | } | |
7871 | ||
7872 | lh = xmalloc (sizeof (*lh)); | |
7873 | memset (lh, 0, sizeof (*lh)); | |
7874 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
7875 | (void *) lh); | |
7876 | ||
dce234bc | 7877 | line_ptr = dwarf2_per_objfile->line.buffer + offset; |
debd256d | 7878 | |
a738430d | 7879 | /* Read in the header. */ |
dd373385 | 7880 | lh->total_length = |
c764a876 DE |
7881 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
7882 | &bytes_read, &offset_size); | |
debd256d | 7883 | line_ptr += bytes_read; |
dce234bc PP |
7884 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line.buffer |
7885 | + dwarf2_per_objfile->line.size)) | |
debd256d | 7886 | { |
4d3c2250 | 7887 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
7888 | return 0; |
7889 | } | |
7890 | lh->statement_program_end = line_ptr + lh->total_length; | |
7891 | lh->version = read_2_bytes (abfd, line_ptr); | |
7892 | line_ptr += 2; | |
c764a876 DE |
7893 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
7894 | line_ptr += offset_size; | |
debd256d JB |
7895 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
7896 | line_ptr += 1; | |
2dc7f7b3 TT |
7897 | if (lh->version >= 4) |
7898 | { | |
7899 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
7900 | line_ptr += 1; | |
7901 | } | |
7902 | else | |
7903 | lh->maximum_ops_per_instruction = 1; | |
7904 | ||
7905 | if (lh->maximum_ops_per_instruction == 0) | |
7906 | { | |
7907 | lh->maximum_ops_per_instruction = 1; | |
7908 | complaint (&symfile_complaints, | |
7909 | _("invalid maximum_ops_per_instruction in `.debug_line' section")); | |
7910 | } | |
7911 | ||
debd256d JB |
7912 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
7913 | line_ptr += 1; | |
7914 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
7915 | line_ptr += 1; | |
7916 | lh->line_range = read_1_byte (abfd, line_ptr); | |
7917 | line_ptr += 1; | |
7918 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
7919 | line_ptr += 1; | |
7920 | lh->standard_opcode_lengths | |
fe1b8b76 | 7921 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
7922 | |
7923 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
7924 | for (i = 1; i < lh->opcode_base; ++i) | |
7925 | { | |
7926 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
7927 | line_ptr += 1; | |
7928 | } | |
7929 | ||
a738430d | 7930 | /* Read directory table. */ |
debd256d JB |
7931 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
7932 | { | |
7933 | line_ptr += bytes_read; | |
7934 | add_include_dir (lh, cur_dir); | |
7935 | } | |
7936 | line_ptr += bytes_read; | |
7937 | ||
a738430d | 7938 | /* Read file name table. */ |
debd256d JB |
7939 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
7940 | { | |
7941 | unsigned int dir_index, mod_time, length; | |
7942 | ||
7943 | line_ptr += bytes_read; | |
7944 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7945 | line_ptr += bytes_read; | |
7946 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7947 | line_ptr += bytes_read; | |
7948 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7949 | line_ptr += bytes_read; | |
7950 | ||
7951 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
7952 | } | |
7953 | line_ptr += bytes_read; | |
7954 | lh->statement_program_start = line_ptr; | |
7955 | ||
dce234bc PP |
7956 | if (line_ptr > (dwarf2_per_objfile->line.buffer |
7957 | + dwarf2_per_objfile->line.size)) | |
4d3c2250 | 7958 | complaint (&symfile_complaints, |
e2e0b3e5 | 7959 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
7960 | |
7961 | discard_cleanups (back_to); | |
7962 | return lh; | |
7963 | } | |
c906108c | 7964 | |
5fb290d7 DJ |
7965 | /* This function exists to work around a bug in certain compilers |
7966 | (particularly GCC 2.95), in which the first line number marker of a | |
7967 | function does not show up until after the prologue, right before | |
7968 | the second line number marker. This function shifts ADDRESS down | |
7969 | to the beginning of the function if necessary, and is called on | |
7970 | addresses passed to record_line. */ | |
7971 | ||
7972 | static CORE_ADDR | |
e142c38c | 7973 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
7974 | { |
7975 | struct function_range *fn; | |
7976 | ||
7977 | /* Find the function_range containing address. */ | |
e142c38c | 7978 | if (!cu->first_fn) |
5fb290d7 DJ |
7979 | return address; |
7980 | ||
e142c38c DJ |
7981 | if (!cu->cached_fn) |
7982 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 7983 | |
e142c38c | 7984 | fn = cu->cached_fn; |
5fb290d7 DJ |
7985 | while (fn) |
7986 | if (fn->lowpc <= address && fn->highpc > address) | |
7987 | goto found; | |
7988 | else | |
7989 | fn = fn->next; | |
7990 | ||
e142c38c DJ |
7991 | fn = cu->first_fn; |
7992 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
7993 | if (fn->lowpc <= address && fn->highpc > address) |
7994 | goto found; | |
7995 | else | |
7996 | fn = fn->next; | |
7997 | ||
7998 | return address; | |
7999 | ||
8000 | found: | |
8001 | if (fn->seen_line) | |
8002 | return address; | |
8003 | if (address != fn->lowpc) | |
4d3c2250 | 8004 | complaint (&symfile_complaints, |
e2e0b3e5 | 8005 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 8006 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
8007 | fn->seen_line = 1; |
8008 | return fn->lowpc; | |
8009 | } | |
8010 | ||
aaa75496 JB |
8011 | /* Decode the Line Number Program (LNP) for the given line_header |
8012 | structure and CU. The actual information extracted and the type | |
8013 | of structures created from the LNP depends on the value of PST. | |
8014 | ||
8015 | 1. If PST is NULL, then this procedure uses the data from the program | |
8016 | to create all necessary symbol tables, and their linetables. | |
8017 | The compilation directory of the file is passed in COMP_DIR, | |
8018 | and must not be NULL. | |
8019 | ||
8020 | 2. If PST is not NULL, this procedure reads the program to determine | |
8021 | the list of files included by the unit represented by PST, and | |
8022 | builds all the associated partial symbol tables. In this case, | |
8023 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
8024 | is not used to compute the full name of the symtab, and therefore | |
8025 | omitting it when building the partial symtab does not introduce | |
8026 | the potential for inconsistency - a partial symtab and its associated | |
8027 | symbtab having a different fullname -). */ | |
debd256d | 8028 | |
c906108c | 8029 | static void |
debd256d | 8030 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 8031 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 8032 | { |
a8c50c1f | 8033 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 8034 | gdb_byte *line_end; |
a8c50c1f | 8035 | unsigned int bytes_read, extended_len; |
c906108c | 8036 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
8037 | CORE_ADDR baseaddr; |
8038 | struct objfile *objfile = cu->objfile; | |
fbf65064 | 8039 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 8040 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 8041 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
e142c38c DJ |
8042 | |
8043 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 8044 | |
debd256d JB |
8045 | line_ptr = lh->statement_program_start; |
8046 | line_end = lh->statement_program_end; | |
c906108c SS |
8047 | |
8048 | /* Read the statement sequences until there's nothing left. */ | |
8049 | while (line_ptr < line_end) | |
8050 | { | |
8051 | /* state machine registers */ | |
8052 | CORE_ADDR address = 0; | |
8053 | unsigned int file = 1; | |
8054 | unsigned int line = 1; | |
8055 | unsigned int column = 0; | |
debd256d | 8056 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
8057 | int basic_block = 0; |
8058 | int end_sequence = 0; | |
fbf65064 | 8059 | CORE_ADDR addr; |
2dc7f7b3 | 8060 | unsigned char op_index = 0; |
c906108c | 8061 | |
aaa75496 | 8062 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 8063 | { |
aaa75496 | 8064 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
8065 | /* lh->include_dirs and lh->file_names are 0-based, but the |
8066 | directory and file name numbers in the statement program | |
8067 | are 1-based. */ | |
8068 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 8069 | char *dir = NULL; |
a738430d | 8070 | |
debd256d JB |
8071 | if (fe->dir_index) |
8072 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
8073 | |
8074 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
8075 | } |
8076 | ||
a738430d | 8077 | /* Decode the table. */ |
c5aa993b | 8078 | while (!end_sequence) |
c906108c SS |
8079 | { |
8080 | op_code = read_1_byte (abfd, line_ptr); | |
8081 | line_ptr += 1; | |
59205f5a JB |
8082 | if (line_ptr > line_end) |
8083 | { | |
8084 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
8085 | break; | |
8086 | } | |
9aa1fe7e | 8087 | |
debd256d | 8088 | if (op_code >= lh->opcode_base) |
a738430d MK |
8089 | { |
8090 | /* Special operand. */ | |
debd256d | 8091 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
8092 | address += (((op_index + (adj_opcode / lh->line_range)) |
8093 | / lh->maximum_ops_per_instruction) | |
8094 | * lh->minimum_instruction_length); | |
8095 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
8096 | % lh->maximum_ops_per_instruction); | |
debd256d | 8097 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 8098 | if (lh->num_file_names < file || file == 0) |
25e43795 | 8099 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
8100 | /* For now we ignore lines not starting on an |
8101 | instruction boundary. */ | |
8102 | else if (op_index == 0) | |
25e43795 DJ |
8103 | { |
8104 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 8105 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
8106 | { |
8107 | if (last_subfile != current_subfile) | |
8108 | { | |
8109 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
8110 | if (last_subfile) | |
8111 | record_line (last_subfile, 0, addr); | |
8112 | last_subfile = current_subfile; | |
8113 | } | |
25e43795 | 8114 | /* Append row to matrix using current values. */ |
fbf65064 UW |
8115 | addr = check_cu_functions (address, cu); |
8116 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
8117 | record_line (current_subfile, line, addr); | |
366da635 | 8118 | } |
25e43795 | 8119 | } |
ca5f395d | 8120 | basic_block = 0; |
9aa1fe7e GK |
8121 | } |
8122 | else switch (op_code) | |
c906108c SS |
8123 | { |
8124 | case DW_LNS_extended_op: | |
a8c50c1f | 8125 | extended_len = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
473b7be6 | 8126 | line_ptr += bytes_read; |
a8c50c1f | 8127 | extended_end = line_ptr + extended_len; |
c906108c SS |
8128 | extended_op = read_1_byte (abfd, line_ptr); |
8129 | line_ptr += 1; | |
8130 | switch (extended_op) | |
8131 | { | |
8132 | case DW_LNE_end_sequence: | |
8133 | end_sequence = 1; | |
c906108c SS |
8134 | break; |
8135 | case DW_LNE_set_address: | |
e7c27a73 | 8136 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
2dc7f7b3 | 8137 | op_index = 0; |
107d2387 AC |
8138 | line_ptr += bytes_read; |
8139 | address += baseaddr; | |
c906108c SS |
8140 | break; |
8141 | case DW_LNE_define_file: | |
debd256d JB |
8142 | { |
8143 | char *cur_file; | |
8144 | unsigned int dir_index, mod_time, length; | |
8145 | ||
8146 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
8147 | line_ptr += bytes_read; | |
8148 | dir_index = | |
8149 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
8150 | line_ptr += bytes_read; | |
8151 | mod_time = | |
8152 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
8153 | line_ptr += bytes_read; | |
8154 | length = | |
8155 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
8156 | line_ptr += bytes_read; | |
8157 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
8158 | } | |
c906108c | 8159 | break; |
d0c6ba3d CC |
8160 | case DW_LNE_set_discriminator: |
8161 | /* The discriminator is not interesting to the debugger; | |
8162 | just ignore it. */ | |
8163 | line_ptr = extended_end; | |
8164 | break; | |
c906108c | 8165 | default: |
4d3c2250 | 8166 | complaint (&symfile_complaints, |
e2e0b3e5 | 8167 | _("mangled .debug_line section")); |
debd256d | 8168 | return; |
c906108c | 8169 | } |
a8c50c1f DJ |
8170 | /* Make sure that we parsed the extended op correctly. If e.g. |
8171 | we expected a different address size than the producer used, | |
8172 | we may have read the wrong number of bytes. */ | |
8173 | if (line_ptr != extended_end) | |
8174 | { | |
8175 | complaint (&symfile_complaints, | |
8176 | _("mangled .debug_line section")); | |
8177 | return; | |
8178 | } | |
c906108c SS |
8179 | break; |
8180 | case DW_LNS_copy: | |
59205f5a | 8181 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
8182 | dwarf2_debug_line_missing_file_complaint (); |
8183 | else | |
366da635 | 8184 | { |
25e43795 | 8185 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 8186 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
8187 | { |
8188 | if (last_subfile != current_subfile) | |
8189 | { | |
8190 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
8191 | if (last_subfile) | |
8192 | record_line (last_subfile, 0, addr); | |
8193 | last_subfile = current_subfile; | |
8194 | } | |
8195 | addr = check_cu_functions (address, cu); | |
8196 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
8197 | record_line (current_subfile, line, addr); | |
8198 | } | |
366da635 | 8199 | } |
c906108c SS |
8200 | basic_block = 0; |
8201 | break; | |
8202 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
8203 | { |
8204 | CORE_ADDR adjust | |
8205 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
8206 | ||
8207 | address += (((op_index + adjust) | |
8208 | / lh->maximum_ops_per_instruction) | |
8209 | * lh->minimum_instruction_length); | |
8210 | op_index = ((op_index + adjust) | |
8211 | % lh->maximum_ops_per_instruction); | |
8212 | line_ptr += bytes_read; | |
8213 | } | |
c906108c SS |
8214 | break; |
8215 | case DW_LNS_advance_line: | |
8216 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
8217 | line_ptr += bytes_read; | |
8218 | break; | |
8219 | case DW_LNS_set_file: | |
debd256d | 8220 | { |
a738430d MK |
8221 | /* The arrays lh->include_dirs and lh->file_names are |
8222 | 0-based, but the directory and file name numbers in | |
8223 | the statement program are 1-based. */ | |
debd256d | 8224 | struct file_entry *fe; |
4f1520fb | 8225 | char *dir = NULL; |
a738430d | 8226 | |
debd256d JB |
8227 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
8228 | line_ptr += bytes_read; | |
59205f5a | 8229 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
8230 | dwarf2_debug_line_missing_file_complaint (); |
8231 | else | |
8232 | { | |
8233 | fe = &lh->file_names[file - 1]; | |
8234 | if (fe->dir_index) | |
8235 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8236 | if (!decode_for_pst_p) | |
8237 | { | |
8238 | last_subfile = current_subfile; | |
8239 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
8240 | } | |
8241 | } | |
debd256d | 8242 | } |
c906108c SS |
8243 | break; |
8244 | case DW_LNS_set_column: | |
8245 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
8246 | line_ptr += bytes_read; | |
8247 | break; | |
8248 | case DW_LNS_negate_stmt: | |
8249 | is_stmt = (!is_stmt); | |
8250 | break; | |
8251 | case DW_LNS_set_basic_block: | |
8252 | basic_block = 1; | |
8253 | break; | |
c2c6d25f JM |
8254 | /* Add to the address register of the state machine the |
8255 | address increment value corresponding to special opcode | |
a738430d MK |
8256 | 255. I.e., this value is scaled by the minimum |
8257 | instruction length since special opcode 255 would have | |
8258 | scaled the the increment. */ | |
c906108c | 8259 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
8260 | { |
8261 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
8262 | ||
8263 | address += (((op_index + adjust) | |
8264 | / lh->maximum_ops_per_instruction) | |
8265 | * lh->minimum_instruction_length); | |
8266 | op_index = ((op_index + adjust) | |
8267 | % lh->maximum_ops_per_instruction); | |
8268 | } | |
c906108c SS |
8269 | break; |
8270 | case DW_LNS_fixed_advance_pc: | |
8271 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 8272 | op_index = 0; |
c906108c SS |
8273 | line_ptr += 2; |
8274 | break; | |
9aa1fe7e | 8275 | default: |
a738430d MK |
8276 | { |
8277 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 8278 | int i; |
a738430d | 8279 | |
debd256d | 8280 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
8281 | { |
8282 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
8283 | line_ptr += bytes_read; | |
8284 | } | |
8285 | } | |
c906108c SS |
8286 | } |
8287 | } | |
59205f5a JB |
8288 | if (lh->num_file_names < file || file == 0) |
8289 | dwarf2_debug_line_missing_file_complaint (); | |
8290 | else | |
8291 | { | |
8292 | lh->file_names[file - 1].included_p = 1; | |
8293 | if (!decode_for_pst_p) | |
fbf65064 UW |
8294 | { |
8295 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
8296 | record_line (current_subfile, 0, addr); | |
8297 | } | |
59205f5a | 8298 | } |
c906108c | 8299 | } |
aaa75496 JB |
8300 | |
8301 | if (decode_for_pst_p) | |
8302 | { | |
8303 | int file_index; | |
8304 | ||
8305 | /* Now that we're done scanning the Line Header Program, we can | |
8306 | create the psymtab of each included file. */ | |
8307 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
8308 | if (lh->file_names[file_index].included_p == 1) | |
8309 | { | |
5b5464ad JB |
8310 | const struct file_entry fe = lh->file_names [file_index]; |
8311 | char *include_name = fe.name; | |
8312 | char *dir_name = NULL; | |
8313 | char *pst_filename = pst->filename; | |
8314 | ||
8315 | if (fe.dir_index) | |
8316 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
8317 | ||
8318 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
8319 | { | |
1754f103 MK |
8320 | include_name = concat (dir_name, SLASH_STRING, |
8321 | include_name, (char *)NULL); | |
5b5464ad JB |
8322 | make_cleanup (xfree, include_name); |
8323 | } | |
8324 | ||
8325 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
8326 | { | |
1754f103 MK |
8327 | pst_filename = concat (pst->dirname, SLASH_STRING, |
8328 | pst_filename, (char *)NULL); | |
5b5464ad JB |
8329 | make_cleanup (xfree, pst_filename); |
8330 | } | |
8331 | ||
8332 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
8333 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
8334 | } | |
8335 | } | |
cb1df416 DJ |
8336 | else |
8337 | { | |
8338 | /* Make sure a symtab is created for every file, even files | |
8339 | which contain only variables (i.e. no code with associated | |
8340 | line numbers). */ | |
8341 | ||
8342 | int i; | |
8343 | struct file_entry *fe; | |
8344 | ||
8345 | for (i = 0; i < lh->num_file_names; i++) | |
8346 | { | |
8347 | char *dir = NULL; | |
9a619af0 | 8348 | |
cb1df416 DJ |
8349 | fe = &lh->file_names[i]; |
8350 | if (fe->dir_index) | |
8351 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8352 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
8353 | ||
8354 | /* Skip the main file; we don't need it, and it must be | |
8355 | allocated last, so that it will show up before the | |
8356 | non-primary symtabs in the objfile's symtab list. */ | |
8357 | if (current_subfile == first_subfile) | |
8358 | continue; | |
8359 | ||
8360 | if (current_subfile->symtab == NULL) | |
8361 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
8362 | cu->objfile); | |
8363 | fe->symtab = current_subfile->symtab; | |
8364 | } | |
8365 | } | |
c906108c SS |
8366 | } |
8367 | ||
8368 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
8369 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
8370 | or NULL if not known. COMP_DIR is the compilation directory for the |
8371 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
8372 | This routine tries to keep line numbers from identical absolute and |
8373 | relative file names in a common subfile. | |
8374 | ||
8375 | Using the `list' example from the GDB testsuite, which resides in | |
8376 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
8377 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
8378 | ||
c5aa993b JM |
8379 | DW_AT_name: /srcdir/list0.c |
8380 | DW_AT_comp_dir: /compdir | |
357e46e7 | 8381 | files.files[0].name: list0.h |
c5aa993b | 8382 | files.files[0].dir: /srcdir |
357e46e7 | 8383 | files.files[1].name: list0.c |
c5aa993b | 8384 | files.files[1].dir: /srcdir |
c906108c SS |
8385 | |
8386 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
8387 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
8388 | start_subfile will ensure that this happens provided that we pass the | |
8389 | concatenation of files.files[1].dir and files.files[1].name as the | |
8390 | subfile's name. */ | |
c906108c SS |
8391 | |
8392 | static void | |
4f1520fb | 8393 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 8394 | { |
4f1520fb FR |
8395 | char *fullname; |
8396 | ||
8397 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
8398 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
8399 | second argument to start_subfile. To be consistent, we do the | |
8400 | same here. In order not to lose the line information directory, | |
8401 | we concatenate it to the filename when it makes sense. | |
8402 | Note that the Dwarf3 standard says (speaking of filenames in line | |
8403 | information): ``The directory index is ignored for file names | |
8404 | that represent full path names''. Thus ignoring dirname in the | |
8405 | `else' branch below isn't an issue. */ | |
c906108c | 8406 | |
d5166ae1 | 8407 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
8408 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
8409 | else | |
8410 | fullname = filename; | |
c906108c | 8411 | |
4f1520fb FR |
8412 | start_subfile (fullname, comp_dir); |
8413 | ||
8414 | if (fullname != filename) | |
8415 | xfree (fullname); | |
c906108c SS |
8416 | } |
8417 | ||
4c2df51b DJ |
8418 | static void |
8419 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 8420 | struct dwarf2_cu *cu) |
4c2df51b | 8421 | { |
e7c27a73 DJ |
8422 | struct objfile *objfile = cu->objfile; |
8423 | struct comp_unit_head *cu_header = &cu->header; | |
8424 | ||
4c2df51b DJ |
8425 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
8426 | code here to turn a symbol with DW_AT_external and a | |
8427 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
8428 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
8429 | with some versions of binutils) where shared libraries could have | |
8430 | relocations against symbols in their debug information - the | |
8431 | minimal symbol would have the right address, but the debug info | |
8432 | would not. It's no longer necessary, because we will explicitly | |
8433 | apply relocations when we read in the debug information now. */ | |
8434 | ||
8435 | /* A DW_AT_location attribute with no contents indicates that a | |
8436 | variable has been optimized away. */ | |
8437 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
8438 | { | |
8439 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
8440 | return; | |
8441 | } | |
8442 | ||
8443 | /* Handle one degenerate form of location expression specially, to | |
8444 | preserve GDB's previous behavior when section offsets are | |
8445 | specified. If this is just a DW_OP_addr then mark this symbol | |
8446 | as LOC_STATIC. */ | |
8447 | ||
8448 | if (attr_form_is_block (attr) | |
8449 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
8450 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
8451 | { | |
891d2f0b | 8452 | unsigned int dummy; |
4c2df51b DJ |
8453 | |
8454 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 8455 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 8456 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
8457 | fixup_symbol_section (sym, objfile); |
8458 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
8459 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
8460 | return; |
8461 | } | |
8462 | ||
8463 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
8464 | expression evaluator, and use LOC_COMPUTED only when necessary | |
8465 | (i.e. when the value of a register or memory location is | |
8466 | referenced, or a thread-local block, etc.). Then again, it might | |
8467 | not be worthwhile. I'm assuming that it isn't unless performance | |
8468 | or memory numbers show me otherwise. */ | |
8469 | ||
e7c27a73 | 8470 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
8471 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
8472 | } | |
8473 | ||
c906108c SS |
8474 | /* Given a pointer to a DWARF information entry, figure out if we need |
8475 | to make a symbol table entry for it, and if so, create a new entry | |
8476 | and return a pointer to it. | |
8477 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 8478 | used the passed type. */ |
c906108c SS |
8479 | |
8480 | static struct symbol * | |
e7c27a73 | 8481 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 8482 | { |
e7c27a73 | 8483 | struct objfile *objfile = cu->objfile; |
c906108c SS |
8484 | struct symbol *sym = NULL; |
8485 | char *name; | |
8486 | struct attribute *attr = NULL; | |
8487 | struct attribute *attr2 = NULL; | |
e142c38c | 8488 | CORE_ADDR baseaddr; |
edb3359d | 8489 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
8490 | |
8491 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 8492 | |
94af9270 | 8493 | name = dwarf2_name (die, cu); |
c906108c SS |
8494 | if (name) |
8495 | { | |
94af9270 KS |
8496 | const char *linkagename; |
8497 | ||
4a146b47 | 8498 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
8499 | sizeof (struct symbol)); |
8500 | OBJSTAT (objfile, n_syms++); | |
8501 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
8502 | |
8503 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 8504 | SYMBOL_LANGUAGE (sym) = cu->language; |
94af9270 KS |
8505 | linkagename = dwarf2_physname (name, die, cu); |
8506 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c SS |
8507 | |
8508 | /* Default assumptions. | |
c5aa993b | 8509 | Use the passed type or decode it from the die. */ |
176620f1 | 8510 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 8511 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
8512 | if (type != NULL) |
8513 | SYMBOL_TYPE (sym) = type; | |
8514 | else | |
e7c27a73 | 8515 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
8516 | attr = dwarf2_attr (die, |
8517 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
8518 | cu); | |
c906108c SS |
8519 | if (attr) |
8520 | { | |
8521 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
8522 | } | |
cb1df416 | 8523 | |
edb3359d DJ |
8524 | attr = dwarf2_attr (die, |
8525 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
8526 | cu); | |
cb1df416 DJ |
8527 | if (attr) |
8528 | { | |
8529 | int file_index = DW_UNSND (attr); | |
9a619af0 | 8530 | |
cb1df416 DJ |
8531 | if (cu->line_header == NULL |
8532 | || file_index > cu->line_header->num_file_names) | |
8533 | complaint (&symfile_complaints, | |
8534 | _("file index out of range")); | |
1c3d648d | 8535 | else if (file_index > 0) |
cb1df416 DJ |
8536 | { |
8537 | struct file_entry *fe; | |
9a619af0 | 8538 | |
cb1df416 DJ |
8539 | fe = &cu->line_header->file_names[file_index - 1]; |
8540 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
8541 | } | |
8542 | } | |
8543 | ||
c906108c SS |
8544 | switch (die->tag) |
8545 | { | |
8546 | case DW_TAG_label: | |
e142c38c | 8547 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
8548 | if (attr) |
8549 | { | |
8550 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
8551 | } | |
8552 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
8553 | break; | |
8554 | case DW_TAG_subprogram: | |
8555 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
8556 | finish_block. */ | |
8557 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 8558 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
8559 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
8560 | || cu->language == language_ada) | |
c906108c | 8561 | { |
2cfa0c8d JB |
8562 | /* Subprograms marked external are stored as a global symbol. |
8563 | Ada subprograms, whether marked external or not, are always | |
8564 | stored as a global symbol, because we want to be able to | |
8565 | access them globally. For instance, we want to be able | |
8566 | to break on a nested subprogram without having to | |
8567 | specify the context. */ | |
c906108c SS |
8568 | add_symbol_to_list (sym, &global_symbols); |
8569 | } | |
8570 | else | |
8571 | { | |
e142c38c | 8572 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
8573 | } |
8574 | break; | |
edb3359d DJ |
8575 | case DW_TAG_inlined_subroutine: |
8576 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
8577 | finish_block. */ | |
8578 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
8579 | SYMBOL_INLINED (sym) = 1; | |
8580 | /* Do not add the symbol to any lists. It will be found via | |
8581 | BLOCK_FUNCTION from the blockvector. */ | |
8582 | break; | |
c906108c SS |
8583 | case DW_TAG_variable: |
8584 | /* Compilation with minimal debug info may result in variables | |
8585 | with missing type entries. Change the misleading `void' type | |
8586 | to something sensible. */ | |
8587 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
64c50499 | 8588 | SYMBOL_TYPE (sym) |
46bf5051 | 8589 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 8590 | |
e142c38c | 8591 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
8592 | if (attr) |
8593 | { | |
e7c27a73 | 8594 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 8595 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
8596 | if (attr2 && (DW_UNSND (attr2) != 0)) |
8597 | add_symbol_to_list (sym, &global_symbols); | |
8598 | else | |
e142c38c | 8599 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
8600 | break; |
8601 | } | |
e142c38c | 8602 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
8603 | if (attr) |
8604 | { | |
e7c27a73 | 8605 | var_decode_location (attr, sym, cu); |
e142c38c | 8606 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 8607 | if (attr2 && (DW_UNSND (attr2) != 0)) |
1c809c68 TT |
8608 | { |
8609 | struct pending **list_to_add; | |
8610 | ||
8611 | /* A variable with DW_AT_external is never static, | |
8612 | but it may be block-scoped. */ | |
8613 | list_to_add = (cu->list_in_scope == &file_symbols | |
8614 | ? &global_symbols : cu->list_in_scope); | |
8615 | add_symbol_to_list (sym, list_to_add); | |
8616 | } | |
c906108c | 8617 | else |
e142c38c | 8618 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
8619 | } |
8620 | else | |
8621 | { | |
8622 | /* We do not know the address of this symbol. | |
c5aa993b JM |
8623 | If it is an external symbol and we have type information |
8624 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
8625 | The address of the variable will then be determined from | |
8626 | the minimal symbol table whenever the variable is | |
8627 | referenced. */ | |
e142c38c | 8628 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 8629 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 8630 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 8631 | { |
0fe7935b DJ |
8632 | struct pending **list_to_add; |
8633 | ||
8634 | /* A variable with DW_AT_external is never static, but it | |
8635 | may be block-scoped. */ | |
8636 | list_to_add = (cu->list_in_scope == &file_symbols | |
8637 | ? &global_symbols : cu->list_in_scope); | |
8638 | ||
c906108c | 8639 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
0fe7935b | 8640 | add_symbol_to_list (sym, list_to_add); |
c906108c | 8641 | } |
442ddf59 JK |
8642 | else if (!die_is_declaration (die, cu)) |
8643 | { | |
8644 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
8645 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
8646 | add_symbol_to_list (sym, cu->list_in_scope); | |
8647 | } | |
c906108c SS |
8648 | } |
8649 | break; | |
8650 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
8651 | /* If we are inside a function, mark this as an argument. If |
8652 | not, we might be looking at an argument to an inlined function | |
8653 | when we do not have enough information to show inlined frames; | |
8654 | pretend it's a local variable in that case so that the user can | |
8655 | still see it. */ | |
8656 | if (context_stack_depth > 0 | |
8657 | && context_stack[context_stack_depth - 1].name != NULL) | |
8658 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 8659 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
8660 | if (attr) |
8661 | { | |
e7c27a73 | 8662 | var_decode_location (attr, sym, cu); |
c906108c | 8663 | } |
e142c38c | 8664 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
8665 | if (attr) |
8666 | { | |
e7c27a73 | 8667 | dwarf2_const_value (attr, sym, cu); |
c906108c | 8668 | } |
f346a30d PM |
8669 | attr = dwarf2_attr (die, DW_AT_variable_parameter, cu); |
8670 | if (attr && DW_UNSND (attr)) | |
8671 | { | |
8672 | struct type *ref_type; | |
8673 | ||
8674 | ref_type = lookup_reference_type (SYMBOL_TYPE (sym)); | |
8675 | SYMBOL_TYPE (sym) = ref_type; | |
8676 | } | |
8677 | ||
e142c38c | 8678 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
8679 | break; |
8680 | case DW_TAG_unspecified_parameters: | |
8681 | /* From varargs functions; gdb doesn't seem to have any | |
8682 | interest in this information, so just ignore it for now. | |
8683 | (FIXME?) */ | |
8684 | break; | |
8685 | case DW_TAG_class_type: | |
680b30c7 | 8686 | case DW_TAG_interface_type: |
c906108c SS |
8687 | case DW_TAG_structure_type: |
8688 | case DW_TAG_union_type: | |
72019c9c | 8689 | case DW_TAG_set_type: |
c906108c SS |
8690 | case DW_TAG_enumeration_type: |
8691 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 8692 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 8693 | |
63d06c5c DC |
8694 | /* Make sure that the symbol includes appropriate enclosing |
8695 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 8696 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
8697 | the type. */ |
8698 | ||
987504bb JJ |
8699 | if (cu->language == language_cplus |
8700 | || cu->language == language_java) | |
c906108c | 8701 | { |
63d06c5c DC |
8702 | struct type *type = SYMBOL_TYPE (sym); |
8703 | ||
8704 | if (TYPE_TAG_NAME (type) != NULL) | |
8705 | { | |
8706 | /* FIXME: carlton/2003-11-10: Should this use | |
8707 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
8708 | arises further down in this function.) */ |
8709 | /* The type's name is already allocated along with | |
8710 | this objfile, so we don't need to duplicate it | |
8711 | for the symbol. */ | |
8712 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 8713 | } |
c906108c | 8714 | } |
63d06c5c DC |
8715 | |
8716 | { | |
987504bb | 8717 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
8718 | really ever be static objects: otherwise, if you try |
8719 | to, say, break of a class's method and you're in a file | |
8720 | which doesn't mention that class, it won't work unless | |
8721 | the check for all static symbols in lookup_symbol_aux | |
8722 | saves you. See the OtherFileClass tests in | |
8723 | gdb.c++/namespace.exp. */ | |
8724 | ||
8725 | struct pending **list_to_add; | |
8726 | ||
e142c38c | 8727 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
8728 | && (cu->language == language_cplus |
8729 | || cu->language == language_java) | |
e142c38c | 8730 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
8731 | |
8732 | add_symbol_to_list (sym, list_to_add); | |
8733 | ||
8734 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb | 8735 | defines a typedef for "foo". A Java class declaration also |
5eeb2539 | 8736 | defines a typedef for the class. */ |
987504bb | 8737 | if (cu->language == language_cplus |
8c6860bb JB |
8738 | || cu->language == language_java |
8739 | || cu->language == language_ada) | |
63d06c5c | 8740 | { |
d8151005 DJ |
8741 | /* The symbol's name is already allocated along with |
8742 | this objfile, so we don't need to duplicate it for | |
8743 | the type. */ | |
63d06c5c | 8744 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 8745 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
8746 | } |
8747 | } | |
c906108c SS |
8748 | break; |
8749 | case DW_TAG_typedef: | |
94af9270 KS |
8750 | SYMBOL_LINKAGE_NAME (sym) |
8751 | = (char *) dwarf2_full_name (name, die, cu); | |
63d06c5c DC |
8752 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
8753 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 8754 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 8755 | break; |
c906108c | 8756 | case DW_TAG_base_type: |
a02abb62 | 8757 | case DW_TAG_subrange_type: |
90e7c2c5 PM |
8758 | case DW_TAG_const_type: |
8759 | case DW_TAG_volatile_type: | |
c906108c | 8760 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 8761 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 8762 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
8763 | break; |
8764 | case DW_TAG_enumerator: | |
94af9270 KS |
8765 | SYMBOL_LINKAGE_NAME (sym) |
8766 | = (char *) dwarf2_full_name (name, die, cu); | |
e142c38c | 8767 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
8768 | if (attr) |
8769 | { | |
e7c27a73 | 8770 | dwarf2_const_value (attr, sym, cu); |
c906108c | 8771 | } |
63d06c5c DC |
8772 | { |
8773 | /* NOTE: carlton/2003-11-10: See comment above in the | |
8774 | DW_TAG_class_type, etc. block. */ | |
8775 | ||
8776 | struct pending **list_to_add; | |
8777 | ||
e142c38c | 8778 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
8779 | && (cu->language == language_cplus |
8780 | || cu->language == language_java) | |
e142c38c | 8781 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
8782 | |
8783 | add_symbol_to_list (sym, list_to_add); | |
8784 | } | |
c906108c | 8785 | break; |
5c4e30ca DC |
8786 | case DW_TAG_namespace: |
8787 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
8788 | add_symbol_to_list (sym, &global_symbols); | |
8789 | break; | |
c906108c SS |
8790 | default: |
8791 | /* Not a tag we recognize. Hopefully we aren't processing | |
8792 | trash data, but since we must specifically ignore things | |
8793 | we don't recognize, there is nothing else we should do at | |
8794 | this point. */ | |
e2e0b3e5 | 8795 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 8796 | dwarf_tag_name (die->tag)); |
c906108c SS |
8797 | break; |
8798 | } | |
df8a16a1 DJ |
8799 | |
8800 | /* For the benefit of old versions of GCC, check for anonymous | |
8801 | namespaces based on the demangled name. */ | |
8802 | if (!processing_has_namespace_info | |
94af9270 | 8803 | && cu->language == language_cplus) |
df8a16a1 | 8804 | cp_scan_for_anonymous_namespaces (sym); |
c906108c SS |
8805 | } |
8806 | return (sym); | |
8807 | } | |
8808 | ||
8809 | /* Copy constant value from an attribute to a symbol. */ | |
8810 | ||
8811 | static void | |
107d2387 | 8812 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 8813 | struct dwarf2_cu *cu) |
c906108c | 8814 | { |
e7c27a73 DJ |
8815 | struct objfile *objfile = cu->objfile; |
8816 | struct comp_unit_head *cu_header = &cu->header; | |
e17a4113 UW |
8817 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
8818 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
c906108c SS |
8819 | struct dwarf_block *blk; |
8820 | ||
8821 | switch (attr->form) | |
8822 | { | |
8823 | case DW_FORM_addr: | |
107d2387 | 8824 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
3567439c | 8825 | dwarf2_const_value_length_mismatch_complaint (SYMBOL_PRINT_NAME (sym), |
4d3c2250 KB |
8826 | cu_header->addr_size, |
8827 | TYPE_LENGTH (SYMBOL_TYPE | |
8828 | (sym))); | |
4e38b386 | 8829 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 8830 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
8831 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
8832 | it's body - store_unsigned_integer. */ | |
8833 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
72f2769e | 8834 | byte_order, DW_ADDR (attr)); |
c906108c SS |
8835 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
8836 | break; | |
4ac36638 | 8837 | case DW_FORM_string: |
93b5768b PA |
8838 | case DW_FORM_strp: |
8839 | /* DW_STRING is already allocated on the obstack, point directly | |
8840 | to it. */ | |
8841 | SYMBOL_VALUE_BYTES (sym) = (gdb_byte *) DW_STRING (attr); | |
8842 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
8843 | break; | |
c906108c SS |
8844 | case DW_FORM_block1: |
8845 | case DW_FORM_block2: | |
8846 | case DW_FORM_block4: | |
8847 | case DW_FORM_block: | |
2dc7f7b3 | 8848 | case DW_FORM_exprloc: |
c906108c SS |
8849 | blk = DW_BLOCK (attr); |
8850 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
3567439c | 8851 | dwarf2_const_value_length_mismatch_complaint (SYMBOL_PRINT_NAME (sym), |
4d3c2250 KB |
8852 | blk->size, |
8853 | TYPE_LENGTH (SYMBOL_TYPE | |
8854 | (sym))); | |
4e38b386 | 8855 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 8856 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
8857 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
8858 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
8859 | break; | |
2df3850c JM |
8860 | |
8861 | /* The DW_AT_const_value attributes are supposed to carry the | |
8862 | symbol's value "represented as it would be on the target | |
8863 | architecture." By the time we get here, it's already been | |
8864 | converted to host endianness, so we just need to sign- or | |
8865 | zero-extend it as appropriate. */ | |
8866 | case DW_FORM_data1: | |
8867 | dwarf2_const_value_data (attr, sym, 8); | |
8868 | break; | |
c906108c | 8869 | case DW_FORM_data2: |
2df3850c JM |
8870 | dwarf2_const_value_data (attr, sym, 16); |
8871 | break; | |
c906108c | 8872 | case DW_FORM_data4: |
2df3850c JM |
8873 | dwarf2_const_value_data (attr, sym, 32); |
8874 | break; | |
c906108c | 8875 | case DW_FORM_data8: |
2df3850c JM |
8876 | dwarf2_const_value_data (attr, sym, 64); |
8877 | break; | |
8878 | ||
c906108c | 8879 | case DW_FORM_sdata: |
2df3850c JM |
8880 | SYMBOL_VALUE (sym) = DW_SND (attr); |
8881 | SYMBOL_CLASS (sym) = LOC_CONST; | |
8882 | break; | |
8883 | ||
c906108c SS |
8884 | case DW_FORM_udata: |
8885 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
8886 | SYMBOL_CLASS (sym) = LOC_CONST; | |
8887 | break; | |
2df3850c | 8888 | |
c906108c | 8889 | default: |
4d3c2250 | 8890 | complaint (&symfile_complaints, |
e2e0b3e5 | 8891 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 8892 | dwarf_form_name (attr->form)); |
c906108c SS |
8893 | SYMBOL_VALUE (sym) = 0; |
8894 | SYMBOL_CLASS (sym) = LOC_CONST; | |
8895 | break; | |
8896 | } | |
8897 | } | |
8898 | ||
2df3850c JM |
8899 | |
8900 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
8901 | or zero-extend it as appropriate for the symbol's type. */ | |
8902 | static void | |
8903 | dwarf2_const_value_data (struct attribute *attr, | |
8904 | struct symbol *sym, | |
8905 | int bits) | |
8906 | { | |
8907 | LONGEST l = DW_UNSND (attr); | |
8908 | ||
8909 | if (bits < sizeof (l) * 8) | |
8910 | { | |
8911 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
8912 | l &= ((LONGEST) 1 << bits) - 1; | |
8913 | else | |
bf9198f1 | 8914 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
8915 | } |
8916 | ||
8917 | SYMBOL_VALUE (sym) = l; | |
8918 | SYMBOL_CLASS (sym) = LOC_CONST; | |
8919 | } | |
8920 | ||
8921 | ||
c906108c SS |
8922 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
8923 | ||
8924 | static struct type * | |
e7c27a73 | 8925 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 8926 | { |
c906108c SS |
8927 | struct attribute *type_attr; |
8928 | struct die_info *type_die; | |
c906108c | 8929 | |
e142c38c | 8930 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
8931 | if (!type_attr) |
8932 | { | |
8933 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 8934 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 8935 | } |
348e048f DE |
8936 | |
8937 | type_die = follow_die_ref_or_sig (die, type_attr, &cu); | |
10b3939b | 8938 | |
33ac96f0 | 8939 | return tag_type_to_type (type_die, cu); |
c906108c SS |
8940 | } |
8941 | ||
b4ba55a1 JB |
8942 | /* True iff CU's producer generates GNAT Ada auxiliary information |
8943 | that allows to find parallel types through that information instead | |
8944 | of having to do expensive parallel lookups by type name. */ | |
8945 | ||
8946 | static int | |
8947 | need_gnat_info (struct dwarf2_cu *cu) | |
8948 | { | |
8949 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
8950 | of GNAT produces this auxiliary information, without any indication | |
8951 | that it is produced. Part of enhancing the FSF version of GNAT | |
8952 | to produce that information will be to put in place an indicator | |
8953 | that we can use in order to determine whether the descriptive type | |
8954 | info is available or not. One suggestion that has been made is | |
8955 | to use a new attribute, attached to the CU die. For now, assume | |
8956 | that the descriptive type info is not available. */ | |
8957 | return 0; | |
8958 | } | |
8959 | ||
8960 | ||
8961 | /* Return the auxiliary type of the die in question using its | |
8962 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
8963 | attribute is not present. */ | |
8964 | ||
8965 | static struct type * | |
8966 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
8967 | { | |
b4ba55a1 JB |
8968 | struct attribute *type_attr; |
8969 | struct die_info *type_die; | |
8970 | ||
8971 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
8972 | if (!type_attr) | |
8973 | return NULL; | |
8974 | ||
8975 | type_die = follow_die_ref (die, type_attr, &cu); | |
33ac96f0 | 8976 | return tag_type_to_type (type_die, cu); |
b4ba55a1 JB |
8977 | } |
8978 | ||
8979 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
8980 | descriptive type accordingly. */ | |
8981 | ||
8982 | static void | |
8983 | set_descriptive_type (struct type *type, struct die_info *die, | |
8984 | struct dwarf2_cu *cu) | |
8985 | { | |
8986 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
8987 | ||
8988 | if (descriptive_type) | |
8989 | { | |
8990 | ALLOCATE_GNAT_AUX_TYPE (type); | |
8991 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
8992 | } | |
8993 | } | |
8994 | ||
c906108c SS |
8995 | /* Return the containing type of the die in question using its |
8996 | DW_AT_containing_type attribute. */ | |
8997 | ||
8998 | static struct type * | |
e7c27a73 | 8999 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9000 | { |
c906108c | 9001 | struct attribute *type_attr; |
33ac96f0 | 9002 | struct die_info *type_die; |
c906108c | 9003 | |
e142c38c | 9004 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
9005 | if (!type_attr) |
9006 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
9007 | "[in module %s]"), cu->objfile->name); | |
9008 | ||
9009 | type_die = follow_die_ref_or_sig (die, type_attr, &cu); | |
9010 | return tag_type_to_type (type_die, cu); | |
c906108c SS |
9011 | } |
9012 | ||
c906108c | 9013 | static struct type * |
e7c27a73 | 9014 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9015 | { |
f792889a DJ |
9016 | struct type *this_type; |
9017 | ||
9018 | this_type = read_type_die (die, cu); | |
9019 | if (!this_type) | |
c906108c | 9020 | { |
d97bc12b | 9021 | dump_die_for_error (die); |
f792889a DJ |
9022 | error (_("Dwarf Error: Cannot find type of die [in module %s]"), |
9023 | cu->objfile->name); | |
c906108c | 9024 | } |
f792889a | 9025 | return this_type; |
c906108c SS |
9026 | } |
9027 | ||
f792889a | 9028 | static struct type * |
e7c27a73 | 9029 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9030 | { |
f792889a DJ |
9031 | struct type *this_type; |
9032 | ||
9033 | this_type = get_die_type (die, cu); | |
9034 | if (this_type) | |
9035 | return this_type; | |
9036 | ||
c906108c SS |
9037 | switch (die->tag) |
9038 | { | |
9039 | case DW_TAG_class_type: | |
680b30c7 | 9040 | case DW_TAG_interface_type: |
c906108c SS |
9041 | case DW_TAG_structure_type: |
9042 | case DW_TAG_union_type: | |
f792889a | 9043 | this_type = read_structure_type (die, cu); |
c906108c SS |
9044 | break; |
9045 | case DW_TAG_enumeration_type: | |
f792889a | 9046 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
9047 | break; |
9048 | case DW_TAG_subprogram: | |
9049 | case DW_TAG_subroutine_type: | |
edb3359d | 9050 | case DW_TAG_inlined_subroutine: |
f792889a | 9051 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
9052 | break; |
9053 | case DW_TAG_array_type: | |
f792889a | 9054 | this_type = read_array_type (die, cu); |
c906108c | 9055 | break; |
72019c9c | 9056 | case DW_TAG_set_type: |
f792889a | 9057 | this_type = read_set_type (die, cu); |
72019c9c | 9058 | break; |
c906108c | 9059 | case DW_TAG_pointer_type: |
f792889a | 9060 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
9061 | break; |
9062 | case DW_TAG_ptr_to_member_type: | |
f792889a | 9063 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
9064 | break; |
9065 | case DW_TAG_reference_type: | |
f792889a | 9066 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
9067 | break; |
9068 | case DW_TAG_const_type: | |
f792889a | 9069 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
9070 | break; |
9071 | case DW_TAG_volatile_type: | |
f792889a | 9072 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
9073 | break; |
9074 | case DW_TAG_string_type: | |
f792889a | 9075 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
9076 | break; |
9077 | case DW_TAG_typedef: | |
f792889a | 9078 | this_type = read_typedef (die, cu); |
c906108c | 9079 | break; |
a02abb62 | 9080 | case DW_TAG_subrange_type: |
f792889a | 9081 | this_type = read_subrange_type (die, cu); |
a02abb62 | 9082 | break; |
c906108c | 9083 | case DW_TAG_base_type: |
f792889a | 9084 | this_type = read_base_type (die, cu); |
c906108c | 9085 | break; |
81a17f79 | 9086 | case DW_TAG_unspecified_type: |
f792889a | 9087 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 9088 | break; |
0114d602 DJ |
9089 | case DW_TAG_namespace: |
9090 | this_type = read_namespace_type (die, cu); | |
9091 | break; | |
c906108c | 9092 | default: |
a1f5b845 | 9093 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 9094 | dwarf_tag_name (die->tag)); |
c906108c SS |
9095 | break; |
9096 | } | |
63d06c5c | 9097 | |
f792889a | 9098 | return this_type; |
63d06c5c DC |
9099 | } |
9100 | ||
fdde2d81 | 9101 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 9102 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 9103 | |
0114d602 DJ |
9104 | For example, if we're within the method foo() in the following |
9105 | code: | |
9106 | ||
9107 | namespace N { | |
9108 | class C { | |
9109 | void foo () { | |
9110 | } | |
9111 | }; | |
9112 | } | |
9113 | ||
9114 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
9115 | |
9116 | static char * | |
e142c38c | 9117 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 9118 | { |
0114d602 DJ |
9119 | struct die_info *parent, *spec_die; |
9120 | struct dwarf2_cu *spec_cu; | |
9121 | struct type *parent_type; | |
63d06c5c | 9122 | |
987504bb JJ |
9123 | if (cu->language != language_cplus |
9124 | && cu->language != language_java) | |
0114d602 DJ |
9125 | return ""; |
9126 | ||
9127 | /* We have to be careful in the presence of DW_AT_specification. | |
9128 | For example, with GCC 3.4, given the code | |
9129 | ||
9130 | namespace N { | |
9131 | void foo() { | |
9132 | // Definition of N::foo. | |
9133 | } | |
9134 | } | |
9135 | ||
9136 | then we'll have a tree of DIEs like this: | |
9137 | ||
9138 | 1: DW_TAG_compile_unit | |
9139 | 2: DW_TAG_namespace // N | |
9140 | 3: DW_TAG_subprogram // declaration of N::foo | |
9141 | 4: DW_TAG_subprogram // definition of N::foo | |
9142 | DW_AT_specification // refers to die #3 | |
9143 | ||
9144 | Thus, when processing die #4, we have to pretend that we're in | |
9145 | the context of its DW_AT_specification, namely the contex of die | |
9146 | #3. */ | |
9147 | spec_cu = cu; | |
9148 | spec_die = die_specification (die, &spec_cu); | |
9149 | if (spec_die == NULL) | |
9150 | parent = die->parent; | |
9151 | else | |
63d06c5c | 9152 | { |
0114d602 DJ |
9153 | parent = spec_die->parent; |
9154 | cu = spec_cu; | |
63d06c5c | 9155 | } |
0114d602 DJ |
9156 | |
9157 | if (parent == NULL) | |
9158 | return ""; | |
63d06c5c | 9159 | else |
0114d602 DJ |
9160 | switch (parent->tag) |
9161 | { | |
63d06c5c | 9162 | case DW_TAG_namespace: |
0114d602 | 9163 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
9164 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
9165 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
9166 | Work around this problem here. */ | |
9167 | if (cu->language == language_cplus | |
9168 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
9169 | return ""; | |
0114d602 DJ |
9170 | /* We give a name to even anonymous namespaces. */ |
9171 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 9172 | case DW_TAG_class_type: |
680b30c7 | 9173 | case DW_TAG_interface_type: |
63d06c5c | 9174 | case DW_TAG_structure_type: |
0114d602 DJ |
9175 | case DW_TAG_union_type: |
9176 | parent_type = read_type_die (parent, cu); | |
9177 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
9178 | return TYPE_TAG_NAME (parent_type); | |
9179 | else | |
9180 | /* An anonymous structure is only allowed non-static data | |
9181 | members; no typedefs, no member functions, et cetera. | |
9182 | So it does not need a prefix. */ | |
9183 | return ""; | |
63d06c5c | 9184 | default: |
8176b9b8 | 9185 | return determine_prefix (parent, cu); |
63d06c5c | 9186 | } |
63d06c5c DC |
9187 | } |
9188 | ||
987504bb JJ |
9189 | /* Return a newly-allocated string formed by concatenating PREFIX and |
9190 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
9191 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
9192 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
9193 | is used to determine the language and hence, the appropriate separator. */ | |
9194 | ||
9195 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
9196 | |
9197 | static char * | |
987504bb JJ |
9198 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
9199 | struct dwarf2_cu *cu) | |
63d06c5c | 9200 | { |
987504bb | 9201 | char *sep; |
63d06c5c | 9202 | |
987504bb JJ |
9203 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
9204 | sep = ""; | |
9205 | else if (cu->language == language_java) | |
9206 | sep = "."; | |
9207 | else | |
9208 | sep = "::"; | |
63d06c5c | 9209 | |
6dd47d34 DE |
9210 | if (prefix == NULL) |
9211 | prefix = ""; | |
9212 | if (suffix == NULL) | |
9213 | suffix = ""; | |
9214 | ||
987504bb JJ |
9215 | if (obs == NULL) |
9216 | { | |
9217 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 9218 | |
6dd47d34 DE |
9219 | strcpy (retval, prefix); |
9220 | strcat (retval, sep); | |
9221 | strcat (retval, suffix); | |
63d06c5c DC |
9222 | return retval; |
9223 | } | |
987504bb JJ |
9224 | else |
9225 | { | |
9226 | /* We have an obstack. */ | |
48cb83fd | 9227 | return obconcat (obs, prefix, sep, suffix, (char *) NULL); |
987504bb | 9228 | } |
63d06c5c DC |
9229 | } |
9230 | ||
c906108c SS |
9231 | /* Return sibling of die, NULL if no sibling. */ |
9232 | ||
f9aca02d | 9233 | static struct die_info * |
fba45db2 | 9234 | sibling_die (struct die_info *die) |
c906108c | 9235 | { |
639d11d3 | 9236 | return die->sibling; |
c906108c SS |
9237 | } |
9238 | ||
71c25dea TT |
9239 | /* Get name of a die, return NULL if not found. */ |
9240 | ||
9241 | static char * | |
9242 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
9243 | struct obstack *obstack) | |
9244 | { | |
9245 | if (name && cu->language == language_cplus) | |
9246 | { | |
9247 | char *canon_name = cp_canonicalize_string (name); | |
9248 | ||
9249 | if (canon_name != NULL) | |
9250 | { | |
9251 | if (strcmp (canon_name, name) != 0) | |
9252 | name = obsavestring (canon_name, strlen (canon_name), | |
9253 | obstack); | |
9254 | xfree (canon_name); | |
9255 | } | |
9256 | } | |
9257 | ||
9258 | return name; | |
c906108c SS |
9259 | } |
9260 | ||
9219021c DC |
9261 | /* Get name of a die, return NULL if not found. */ |
9262 | ||
9263 | static char * | |
e142c38c | 9264 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
9265 | { |
9266 | struct attribute *attr; | |
9267 | ||
e142c38c | 9268 | attr = dwarf2_attr (die, DW_AT_name, cu); |
71c25dea TT |
9269 | if (!attr || !DW_STRING (attr)) |
9270 | return NULL; | |
9271 | ||
9272 | switch (die->tag) | |
9273 | { | |
9274 | case DW_TAG_compile_unit: | |
9275 | /* Compilation units have a DW_AT_name that is a filename, not | |
9276 | a source language identifier. */ | |
9277 | case DW_TAG_enumeration_type: | |
9278 | case DW_TAG_enumerator: | |
9279 | /* These tags always have simple identifiers already; no need | |
9280 | to canonicalize them. */ | |
9281 | return DW_STRING (attr); | |
907af001 | 9282 | |
418835cc KS |
9283 | case DW_TAG_subprogram: |
9284 | /* Java constructors will all be named "<init>", so return | |
9285 | the class name when we see this special case. */ | |
9286 | if (cu->language == language_java | |
9287 | && DW_STRING (attr) != NULL | |
9288 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
9289 | { | |
9290 | struct dwarf2_cu *spec_cu = cu; | |
9291 | struct die_info *spec_die; | |
9292 | ||
9293 | /* GCJ will output '<init>' for Java constructor names. | |
9294 | For this special case, return the name of the parent class. */ | |
9295 | ||
9296 | /* GCJ may output suprogram DIEs with AT_specification set. | |
9297 | If so, use the name of the specified DIE. */ | |
9298 | spec_die = die_specification (die, &spec_cu); | |
9299 | if (spec_die != NULL) | |
9300 | return dwarf2_name (spec_die, spec_cu); | |
9301 | ||
9302 | do | |
9303 | { | |
9304 | die = die->parent; | |
9305 | if (die->tag == DW_TAG_class_type) | |
9306 | return dwarf2_name (die, cu); | |
9307 | } | |
9308 | while (die->tag != DW_TAG_compile_unit); | |
9309 | } | |
907af001 UW |
9310 | break; |
9311 | ||
9312 | case DW_TAG_class_type: | |
9313 | case DW_TAG_interface_type: | |
9314 | case DW_TAG_structure_type: | |
9315 | case DW_TAG_union_type: | |
9316 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
9317 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
9318 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
9319 | and GCC 4.4. We work around this problem by ignoring these. */ | |
9320 | if (strncmp (DW_STRING (attr), "._", 2) == 0 | |
9321 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0) | |
9322 | return NULL; | |
9323 | break; | |
9324 | ||
71c25dea | 9325 | default: |
907af001 UW |
9326 | break; |
9327 | } | |
9328 | ||
9329 | if (!DW_STRING_IS_CANONICAL (attr)) | |
9330 | { | |
9331 | DW_STRING (attr) | |
9332 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
9333 | &cu->objfile->objfile_obstack); | |
9334 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 9335 | } |
907af001 | 9336 | return DW_STRING (attr); |
9219021c DC |
9337 | } |
9338 | ||
9339 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
9340 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
9341 | containing the return value on output. */ | |
9219021c DC |
9342 | |
9343 | static struct die_info * | |
f2f0e013 | 9344 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
9345 | { |
9346 | struct attribute *attr; | |
9219021c | 9347 | |
f2f0e013 | 9348 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
9349 | if (attr == NULL) |
9350 | return NULL; | |
9351 | ||
f2f0e013 | 9352 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
9353 | } |
9354 | ||
c906108c SS |
9355 | /* Convert a DIE tag into its string name. */ |
9356 | ||
9357 | static char * | |
aa1ee363 | 9358 | dwarf_tag_name (unsigned tag) |
c906108c SS |
9359 | { |
9360 | switch (tag) | |
9361 | { | |
9362 | case DW_TAG_padding: | |
9363 | return "DW_TAG_padding"; | |
9364 | case DW_TAG_array_type: | |
9365 | return "DW_TAG_array_type"; | |
9366 | case DW_TAG_class_type: | |
9367 | return "DW_TAG_class_type"; | |
9368 | case DW_TAG_entry_point: | |
9369 | return "DW_TAG_entry_point"; | |
9370 | case DW_TAG_enumeration_type: | |
9371 | return "DW_TAG_enumeration_type"; | |
9372 | case DW_TAG_formal_parameter: | |
9373 | return "DW_TAG_formal_parameter"; | |
9374 | case DW_TAG_imported_declaration: | |
9375 | return "DW_TAG_imported_declaration"; | |
9376 | case DW_TAG_label: | |
9377 | return "DW_TAG_label"; | |
9378 | case DW_TAG_lexical_block: | |
9379 | return "DW_TAG_lexical_block"; | |
9380 | case DW_TAG_member: | |
9381 | return "DW_TAG_member"; | |
9382 | case DW_TAG_pointer_type: | |
9383 | return "DW_TAG_pointer_type"; | |
9384 | case DW_TAG_reference_type: | |
9385 | return "DW_TAG_reference_type"; | |
9386 | case DW_TAG_compile_unit: | |
9387 | return "DW_TAG_compile_unit"; | |
9388 | case DW_TAG_string_type: | |
9389 | return "DW_TAG_string_type"; | |
9390 | case DW_TAG_structure_type: | |
9391 | return "DW_TAG_structure_type"; | |
9392 | case DW_TAG_subroutine_type: | |
9393 | return "DW_TAG_subroutine_type"; | |
9394 | case DW_TAG_typedef: | |
9395 | return "DW_TAG_typedef"; | |
9396 | case DW_TAG_union_type: | |
9397 | return "DW_TAG_union_type"; | |
9398 | case DW_TAG_unspecified_parameters: | |
9399 | return "DW_TAG_unspecified_parameters"; | |
9400 | case DW_TAG_variant: | |
9401 | return "DW_TAG_variant"; | |
9402 | case DW_TAG_common_block: | |
9403 | return "DW_TAG_common_block"; | |
9404 | case DW_TAG_common_inclusion: | |
9405 | return "DW_TAG_common_inclusion"; | |
9406 | case DW_TAG_inheritance: | |
9407 | return "DW_TAG_inheritance"; | |
9408 | case DW_TAG_inlined_subroutine: | |
9409 | return "DW_TAG_inlined_subroutine"; | |
9410 | case DW_TAG_module: | |
9411 | return "DW_TAG_module"; | |
9412 | case DW_TAG_ptr_to_member_type: | |
9413 | return "DW_TAG_ptr_to_member_type"; | |
9414 | case DW_TAG_set_type: | |
9415 | return "DW_TAG_set_type"; | |
9416 | case DW_TAG_subrange_type: | |
9417 | return "DW_TAG_subrange_type"; | |
9418 | case DW_TAG_with_stmt: | |
9419 | return "DW_TAG_with_stmt"; | |
9420 | case DW_TAG_access_declaration: | |
9421 | return "DW_TAG_access_declaration"; | |
9422 | case DW_TAG_base_type: | |
9423 | return "DW_TAG_base_type"; | |
9424 | case DW_TAG_catch_block: | |
9425 | return "DW_TAG_catch_block"; | |
9426 | case DW_TAG_const_type: | |
9427 | return "DW_TAG_const_type"; | |
9428 | case DW_TAG_constant: | |
9429 | return "DW_TAG_constant"; | |
9430 | case DW_TAG_enumerator: | |
9431 | return "DW_TAG_enumerator"; | |
9432 | case DW_TAG_file_type: | |
9433 | return "DW_TAG_file_type"; | |
9434 | case DW_TAG_friend: | |
9435 | return "DW_TAG_friend"; | |
9436 | case DW_TAG_namelist: | |
9437 | return "DW_TAG_namelist"; | |
9438 | case DW_TAG_namelist_item: | |
9439 | return "DW_TAG_namelist_item"; | |
9440 | case DW_TAG_packed_type: | |
9441 | return "DW_TAG_packed_type"; | |
9442 | case DW_TAG_subprogram: | |
9443 | return "DW_TAG_subprogram"; | |
9444 | case DW_TAG_template_type_param: | |
9445 | return "DW_TAG_template_type_param"; | |
9446 | case DW_TAG_template_value_param: | |
9447 | return "DW_TAG_template_value_param"; | |
9448 | case DW_TAG_thrown_type: | |
9449 | return "DW_TAG_thrown_type"; | |
9450 | case DW_TAG_try_block: | |
9451 | return "DW_TAG_try_block"; | |
9452 | case DW_TAG_variant_part: | |
9453 | return "DW_TAG_variant_part"; | |
9454 | case DW_TAG_variable: | |
9455 | return "DW_TAG_variable"; | |
9456 | case DW_TAG_volatile_type: | |
9457 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
9458 | case DW_TAG_dwarf_procedure: |
9459 | return "DW_TAG_dwarf_procedure"; | |
9460 | case DW_TAG_restrict_type: | |
9461 | return "DW_TAG_restrict_type"; | |
9462 | case DW_TAG_interface_type: | |
9463 | return "DW_TAG_interface_type"; | |
9464 | case DW_TAG_namespace: | |
9465 | return "DW_TAG_namespace"; | |
9466 | case DW_TAG_imported_module: | |
9467 | return "DW_TAG_imported_module"; | |
9468 | case DW_TAG_unspecified_type: | |
9469 | return "DW_TAG_unspecified_type"; | |
9470 | case DW_TAG_partial_unit: | |
9471 | return "DW_TAG_partial_unit"; | |
9472 | case DW_TAG_imported_unit: | |
9473 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
9474 | case DW_TAG_condition: |
9475 | return "DW_TAG_condition"; | |
9476 | case DW_TAG_shared_type: | |
9477 | return "DW_TAG_shared_type"; | |
348e048f DE |
9478 | case DW_TAG_type_unit: |
9479 | return "DW_TAG_type_unit"; | |
c906108c SS |
9480 | case DW_TAG_MIPS_loop: |
9481 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
9482 | case DW_TAG_HP_array_descriptor: |
9483 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
9484 | case DW_TAG_format_label: |
9485 | return "DW_TAG_format_label"; | |
9486 | case DW_TAG_function_template: | |
9487 | return "DW_TAG_function_template"; | |
9488 | case DW_TAG_class_template: | |
9489 | return "DW_TAG_class_template"; | |
b7619582 GF |
9490 | case DW_TAG_GNU_BINCL: |
9491 | return "DW_TAG_GNU_BINCL"; | |
9492 | case DW_TAG_GNU_EINCL: | |
9493 | return "DW_TAG_GNU_EINCL"; | |
9494 | case DW_TAG_upc_shared_type: | |
9495 | return "DW_TAG_upc_shared_type"; | |
9496 | case DW_TAG_upc_strict_type: | |
9497 | return "DW_TAG_upc_strict_type"; | |
9498 | case DW_TAG_upc_relaxed_type: | |
9499 | return "DW_TAG_upc_relaxed_type"; | |
9500 | case DW_TAG_PGI_kanji_type: | |
9501 | return "DW_TAG_PGI_kanji_type"; | |
9502 | case DW_TAG_PGI_interface_block: | |
9503 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
9504 | default: |
9505 | return "DW_TAG_<unknown>"; | |
9506 | } | |
9507 | } | |
9508 | ||
9509 | /* Convert a DWARF attribute code into its string name. */ | |
9510 | ||
9511 | static char * | |
aa1ee363 | 9512 | dwarf_attr_name (unsigned attr) |
c906108c SS |
9513 | { |
9514 | switch (attr) | |
9515 | { | |
9516 | case DW_AT_sibling: | |
9517 | return "DW_AT_sibling"; | |
9518 | case DW_AT_location: | |
9519 | return "DW_AT_location"; | |
9520 | case DW_AT_name: | |
9521 | return "DW_AT_name"; | |
9522 | case DW_AT_ordering: | |
9523 | return "DW_AT_ordering"; | |
9524 | case DW_AT_subscr_data: | |
9525 | return "DW_AT_subscr_data"; | |
9526 | case DW_AT_byte_size: | |
9527 | return "DW_AT_byte_size"; | |
9528 | case DW_AT_bit_offset: | |
9529 | return "DW_AT_bit_offset"; | |
9530 | case DW_AT_bit_size: | |
9531 | return "DW_AT_bit_size"; | |
9532 | case DW_AT_element_list: | |
9533 | return "DW_AT_element_list"; | |
9534 | case DW_AT_stmt_list: | |
9535 | return "DW_AT_stmt_list"; | |
9536 | case DW_AT_low_pc: | |
9537 | return "DW_AT_low_pc"; | |
9538 | case DW_AT_high_pc: | |
9539 | return "DW_AT_high_pc"; | |
9540 | case DW_AT_language: | |
9541 | return "DW_AT_language"; | |
9542 | case DW_AT_member: | |
9543 | return "DW_AT_member"; | |
9544 | case DW_AT_discr: | |
9545 | return "DW_AT_discr"; | |
9546 | case DW_AT_discr_value: | |
9547 | return "DW_AT_discr_value"; | |
9548 | case DW_AT_visibility: | |
9549 | return "DW_AT_visibility"; | |
9550 | case DW_AT_import: | |
9551 | return "DW_AT_import"; | |
9552 | case DW_AT_string_length: | |
9553 | return "DW_AT_string_length"; | |
9554 | case DW_AT_common_reference: | |
9555 | return "DW_AT_common_reference"; | |
9556 | case DW_AT_comp_dir: | |
9557 | return "DW_AT_comp_dir"; | |
9558 | case DW_AT_const_value: | |
9559 | return "DW_AT_const_value"; | |
9560 | case DW_AT_containing_type: | |
9561 | return "DW_AT_containing_type"; | |
9562 | case DW_AT_default_value: | |
9563 | return "DW_AT_default_value"; | |
9564 | case DW_AT_inline: | |
9565 | return "DW_AT_inline"; | |
9566 | case DW_AT_is_optional: | |
9567 | return "DW_AT_is_optional"; | |
9568 | case DW_AT_lower_bound: | |
9569 | return "DW_AT_lower_bound"; | |
9570 | case DW_AT_producer: | |
9571 | return "DW_AT_producer"; | |
9572 | case DW_AT_prototyped: | |
9573 | return "DW_AT_prototyped"; | |
9574 | case DW_AT_return_addr: | |
9575 | return "DW_AT_return_addr"; | |
9576 | case DW_AT_start_scope: | |
9577 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
9578 | case DW_AT_bit_stride: |
9579 | return "DW_AT_bit_stride"; | |
c906108c SS |
9580 | case DW_AT_upper_bound: |
9581 | return "DW_AT_upper_bound"; | |
9582 | case DW_AT_abstract_origin: | |
9583 | return "DW_AT_abstract_origin"; | |
9584 | case DW_AT_accessibility: | |
9585 | return "DW_AT_accessibility"; | |
9586 | case DW_AT_address_class: | |
9587 | return "DW_AT_address_class"; | |
9588 | case DW_AT_artificial: | |
9589 | return "DW_AT_artificial"; | |
9590 | case DW_AT_base_types: | |
9591 | return "DW_AT_base_types"; | |
9592 | case DW_AT_calling_convention: | |
9593 | return "DW_AT_calling_convention"; | |
9594 | case DW_AT_count: | |
9595 | return "DW_AT_count"; | |
9596 | case DW_AT_data_member_location: | |
9597 | return "DW_AT_data_member_location"; | |
9598 | case DW_AT_decl_column: | |
9599 | return "DW_AT_decl_column"; | |
9600 | case DW_AT_decl_file: | |
9601 | return "DW_AT_decl_file"; | |
9602 | case DW_AT_decl_line: | |
9603 | return "DW_AT_decl_line"; | |
9604 | case DW_AT_declaration: | |
9605 | return "DW_AT_declaration"; | |
9606 | case DW_AT_discr_list: | |
9607 | return "DW_AT_discr_list"; | |
9608 | case DW_AT_encoding: | |
9609 | return "DW_AT_encoding"; | |
9610 | case DW_AT_external: | |
9611 | return "DW_AT_external"; | |
9612 | case DW_AT_frame_base: | |
9613 | return "DW_AT_frame_base"; | |
9614 | case DW_AT_friend: | |
9615 | return "DW_AT_friend"; | |
9616 | case DW_AT_identifier_case: | |
9617 | return "DW_AT_identifier_case"; | |
9618 | case DW_AT_macro_info: | |
9619 | return "DW_AT_macro_info"; | |
9620 | case DW_AT_namelist_items: | |
9621 | return "DW_AT_namelist_items"; | |
9622 | case DW_AT_priority: | |
9623 | return "DW_AT_priority"; | |
9624 | case DW_AT_segment: | |
9625 | return "DW_AT_segment"; | |
9626 | case DW_AT_specification: | |
9627 | return "DW_AT_specification"; | |
9628 | case DW_AT_static_link: | |
9629 | return "DW_AT_static_link"; | |
9630 | case DW_AT_type: | |
9631 | return "DW_AT_type"; | |
9632 | case DW_AT_use_location: | |
9633 | return "DW_AT_use_location"; | |
9634 | case DW_AT_variable_parameter: | |
9635 | return "DW_AT_variable_parameter"; | |
9636 | case DW_AT_virtuality: | |
9637 | return "DW_AT_virtuality"; | |
9638 | case DW_AT_vtable_elem_location: | |
9639 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 9640 | /* DWARF 3 values. */ |
d9fa45fe DC |
9641 | case DW_AT_allocated: |
9642 | return "DW_AT_allocated"; | |
9643 | case DW_AT_associated: | |
9644 | return "DW_AT_associated"; | |
9645 | case DW_AT_data_location: | |
9646 | return "DW_AT_data_location"; | |
09fa0d7c JK |
9647 | case DW_AT_byte_stride: |
9648 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
9649 | case DW_AT_entry_pc: |
9650 | return "DW_AT_entry_pc"; | |
9651 | case DW_AT_use_UTF8: | |
9652 | return "DW_AT_use_UTF8"; | |
9653 | case DW_AT_extension: | |
9654 | return "DW_AT_extension"; | |
9655 | case DW_AT_ranges: | |
9656 | return "DW_AT_ranges"; | |
9657 | case DW_AT_trampoline: | |
9658 | return "DW_AT_trampoline"; | |
9659 | case DW_AT_call_column: | |
9660 | return "DW_AT_call_column"; | |
9661 | case DW_AT_call_file: | |
9662 | return "DW_AT_call_file"; | |
9663 | case DW_AT_call_line: | |
9664 | return "DW_AT_call_line"; | |
b7619582 GF |
9665 | case DW_AT_description: |
9666 | return "DW_AT_description"; | |
9667 | case DW_AT_binary_scale: | |
9668 | return "DW_AT_binary_scale"; | |
9669 | case DW_AT_decimal_scale: | |
9670 | return "DW_AT_decimal_scale"; | |
9671 | case DW_AT_small: | |
9672 | return "DW_AT_small"; | |
9673 | case DW_AT_decimal_sign: | |
9674 | return "DW_AT_decimal_sign"; | |
9675 | case DW_AT_digit_count: | |
9676 | return "DW_AT_digit_count"; | |
9677 | case DW_AT_picture_string: | |
9678 | return "DW_AT_picture_string"; | |
9679 | case DW_AT_mutable: | |
9680 | return "DW_AT_mutable"; | |
9681 | case DW_AT_threads_scaled: | |
9682 | return "DW_AT_threads_scaled"; | |
9683 | case DW_AT_explicit: | |
9684 | return "DW_AT_explicit"; | |
9685 | case DW_AT_object_pointer: | |
9686 | return "DW_AT_object_pointer"; | |
9687 | case DW_AT_endianity: | |
9688 | return "DW_AT_endianity"; | |
9689 | case DW_AT_elemental: | |
9690 | return "DW_AT_elemental"; | |
9691 | case DW_AT_pure: | |
9692 | return "DW_AT_pure"; | |
9693 | case DW_AT_recursive: | |
9694 | return "DW_AT_recursive"; | |
348e048f DE |
9695 | /* DWARF 4 values. */ |
9696 | case DW_AT_signature: | |
9697 | return "DW_AT_signature"; | |
31ef98ae TT |
9698 | case DW_AT_linkage_name: |
9699 | return "DW_AT_linkage_name"; | |
b7619582 | 9700 | /* SGI/MIPS extensions. */ |
c764a876 | 9701 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
c906108c SS |
9702 | case DW_AT_MIPS_fde: |
9703 | return "DW_AT_MIPS_fde"; | |
c764a876 | 9704 | #endif |
c906108c SS |
9705 | case DW_AT_MIPS_loop_begin: |
9706 | return "DW_AT_MIPS_loop_begin"; | |
9707 | case DW_AT_MIPS_tail_loop_begin: | |
9708 | return "DW_AT_MIPS_tail_loop_begin"; | |
9709 | case DW_AT_MIPS_epilog_begin: | |
9710 | return "DW_AT_MIPS_epilog_begin"; | |
9711 | case DW_AT_MIPS_loop_unroll_factor: | |
9712 | return "DW_AT_MIPS_loop_unroll_factor"; | |
9713 | case DW_AT_MIPS_software_pipeline_depth: | |
9714 | return "DW_AT_MIPS_software_pipeline_depth"; | |
9715 | case DW_AT_MIPS_linkage_name: | |
9716 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
9717 | case DW_AT_MIPS_stride: |
9718 | return "DW_AT_MIPS_stride"; | |
9719 | case DW_AT_MIPS_abstract_name: | |
9720 | return "DW_AT_MIPS_abstract_name"; | |
9721 | case DW_AT_MIPS_clone_origin: | |
9722 | return "DW_AT_MIPS_clone_origin"; | |
9723 | case DW_AT_MIPS_has_inlines: | |
9724 | return "DW_AT_MIPS_has_inlines"; | |
b7619582 | 9725 | /* HP extensions. */ |
c764a876 | 9726 | #ifndef MIPS /* collides with DW_AT_MIPS_fde */ |
b7619582 GF |
9727 | case DW_AT_HP_block_index: |
9728 | return "DW_AT_HP_block_index"; | |
c764a876 | 9729 | #endif |
b7619582 GF |
9730 | case DW_AT_HP_unmodifiable: |
9731 | return "DW_AT_HP_unmodifiable"; | |
9732 | case DW_AT_HP_actuals_stmt_list: | |
9733 | return "DW_AT_HP_actuals_stmt_list"; | |
9734 | case DW_AT_HP_proc_per_section: | |
9735 | return "DW_AT_HP_proc_per_section"; | |
9736 | case DW_AT_HP_raw_data_ptr: | |
9737 | return "DW_AT_HP_raw_data_ptr"; | |
9738 | case DW_AT_HP_pass_by_reference: | |
9739 | return "DW_AT_HP_pass_by_reference"; | |
9740 | case DW_AT_HP_opt_level: | |
9741 | return "DW_AT_HP_opt_level"; | |
9742 | case DW_AT_HP_prof_version_id: | |
9743 | return "DW_AT_HP_prof_version_id"; | |
9744 | case DW_AT_HP_opt_flags: | |
9745 | return "DW_AT_HP_opt_flags"; | |
9746 | case DW_AT_HP_cold_region_low_pc: | |
9747 | return "DW_AT_HP_cold_region_low_pc"; | |
9748 | case DW_AT_HP_cold_region_high_pc: | |
9749 | return "DW_AT_HP_cold_region_high_pc"; | |
9750 | case DW_AT_HP_all_variables_modifiable: | |
9751 | return "DW_AT_HP_all_variables_modifiable"; | |
9752 | case DW_AT_HP_linkage_name: | |
9753 | return "DW_AT_HP_linkage_name"; | |
9754 | case DW_AT_HP_prof_flags: | |
9755 | return "DW_AT_HP_prof_flags"; | |
9756 | /* GNU extensions. */ | |
c906108c SS |
9757 | case DW_AT_sf_names: |
9758 | return "DW_AT_sf_names"; | |
9759 | case DW_AT_src_info: | |
9760 | return "DW_AT_src_info"; | |
9761 | case DW_AT_mac_info: | |
9762 | return "DW_AT_mac_info"; | |
9763 | case DW_AT_src_coords: | |
9764 | return "DW_AT_src_coords"; | |
9765 | case DW_AT_body_begin: | |
9766 | return "DW_AT_body_begin"; | |
9767 | case DW_AT_body_end: | |
9768 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
9769 | case DW_AT_GNU_vector: |
9770 | return "DW_AT_GNU_vector"; | |
b7619582 GF |
9771 | /* VMS extensions. */ |
9772 | case DW_AT_VMS_rtnbeg_pd_address: | |
9773 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
9774 | /* UPC extension. */ | |
9775 | case DW_AT_upc_threads_scaled: | |
9776 | return "DW_AT_upc_threads_scaled"; | |
9777 | /* PGI (STMicroelectronics) extensions. */ | |
9778 | case DW_AT_PGI_lbase: | |
9779 | return "DW_AT_PGI_lbase"; | |
9780 | case DW_AT_PGI_soffset: | |
9781 | return "DW_AT_PGI_soffset"; | |
9782 | case DW_AT_PGI_lstride: | |
9783 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
9784 | default: |
9785 | return "DW_AT_<unknown>"; | |
9786 | } | |
9787 | } | |
9788 | ||
9789 | /* Convert a DWARF value form code into its string name. */ | |
9790 | ||
9791 | static char * | |
aa1ee363 | 9792 | dwarf_form_name (unsigned form) |
c906108c SS |
9793 | { |
9794 | switch (form) | |
9795 | { | |
9796 | case DW_FORM_addr: | |
9797 | return "DW_FORM_addr"; | |
9798 | case DW_FORM_block2: | |
9799 | return "DW_FORM_block2"; | |
9800 | case DW_FORM_block4: | |
9801 | return "DW_FORM_block4"; | |
9802 | case DW_FORM_data2: | |
9803 | return "DW_FORM_data2"; | |
9804 | case DW_FORM_data4: | |
9805 | return "DW_FORM_data4"; | |
9806 | case DW_FORM_data8: | |
9807 | return "DW_FORM_data8"; | |
9808 | case DW_FORM_string: | |
9809 | return "DW_FORM_string"; | |
9810 | case DW_FORM_block: | |
9811 | return "DW_FORM_block"; | |
9812 | case DW_FORM_block1: | |
9813 | return "DW_FORM_block1"; | |
9814 | case DW_FORM_data1: | |
9815 | return "DW_FORM_data1"; | |
9816 | case DW_FORM_flag: | |
9817 | return "DW_FORM_flag"; | |
9818 | case DW_FORM_sdata: | |
9819 | return "DW_FORM_sdata"; | |
9820 | case DW_FORM_strp: | |
9821 | return "DW_FORM_strp"; | |
9822 | case DW_FORM_udata: | |
9823 | return "DW_FORM_udata"; | |
9824 | case DW_FORM_ref_addr: | |
9825 | return "DW_FORM_ref_addr"; | |
9826 | case DW_FORM_ref1: | |
9827 | return "DW_FORM_ref1"; | |
9828 | case DW_FORM_ref2: | |
9829 | return "DW_FORM_ref2"; | |
9830 | case DW_FORM_ref4: | |
9831 | return "DW_FORM_ref4"; | |
9832 | case DW_FORM_ref8: | |
9833 | return "DW_FORM_ref8"; | |
9834 | case DW_FORM_ref_udata: | |
9835 | return "DW_FORM_ref_udata"; | |
9836 | case DW_FORM_indirect: | |
9837 | return "DW_FORM_indirect"; | |
348e048f DE |
9838 | case DW_FORM_sec_offset: |
9839 | return "DW_FORM_sec_offset"; | |
9840 | case DW_FORM_exprloc: | |
9841 | return "DW_FORM_exprloc"; | |
9842 | case DW_FORM_flag_present: | |
9843 | return "DW_FORM_flag_present"; | |
9844 | case DW_FORM_sig8: | |
9845 | return "DW_FORM_sig8"; | |
c906108c SS |
9846 | default: |
9847 | return "DW_FORM_<unknown>"; | |
9848 | } | |
9849 | } | |
9850 | ||
9851 | /* Convert a DWARF stack opcode into its string name. */ | |
9852 | ||
9853 | static char * | |
aa1ee363 | 9854 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
9855 | { |
9856 | switch (op) | |
9857 | { | |
9858 | case DW_OP_addr: | |
9859 | return "DW_OP_addr"; | |
9860 | case DW_OP_deref: | |
9861 | return "DW_OP_deref"; | |
9862 | case DW_OP_const1u: | |
9863 | return "DW_OP_const1u"; | |
9864 | case DW_OP_const1s: | |
9865 | return "DW_OP_const1s"; | |
9866 | case DW_OP_const2u: | |
9867 | return "DW_OP_const2u"; | |
9868 | case DW_OP_const2s: | |
9869 | return "DW_OP_const2s"; | |
9870 | case DW_OP_const4u: | |
9871 | return "DW_OP_const4u"; | |
9872 | case DW_OP_const4s: | |
9873 | return "DW_OP_const4s"; | |
9874 | case DW_OP_const8u: | |
9875 | return "DW_OP_const8u"; | |
9876 | case DW_OP_const8s: | |
9877 | return "DW_OP_const8s"; | |
9878 | case DW_OP_constu: | |
9879 | return "DW_OP_constu"; | |
9880 | case DW_OP_consts: | |
9881 | return "DW_OP_consts"; | |
9882 | case DW_OP_dup: | |
9883 | return "DW_OP_dup"; | |
9884 | case DW_OP_drop: | |
9885 | return "DW_OP_drop"; | |
9886 | case DW_OP_over: | |
9887 | return "DW_OP_over"; | |
9888 | case DW_OP_pick: | |
9889 | return "DW_OP_pick"; | |
9890 | case DW_OP_swap: | |
9891 | return "DW_OP_swap"; | |
9892 | case DW_OP_rot: | |
9893 | return "DW_OP_rot"; | |
9894 | case DW_OP_xderef: | |
9895 | return "DW_OP_xderef"; | |
9896 | case DW_OP_abs: | |
9897 | return "DW_OP_abs"; | |
9898 | case DW_OP_and: | |
9899 | return "DW_OP_and"; | |
9900 | case DW_OP_div: | |
9901 | return "DW_OP_div"; | |
9902 | case DW_OP_minus: | |
9903 | return "DW_OP_minus"; | |
9904 | case DW_OP_mod: | |
9905 | return "DW_OP_mod"; | |
9906 | case DW_OP_mul: | |
9907 | return "DW_OP_mul"; | |
9908 | case DW_OP_neg: | |
9909 | return "DW_OP_neg"; | |
9910 | case DW_OP_not: | |
9911 | return "DW_OP_not"; | |
9912 | case DW_OP_or: | |
9913 | return "DW_OP_or"; | |
9914 | case DW_OP_plus: | |
9915 | return "DW_OP_plus"; | |
9916 | case DW_OP_plus_uconst: | |
9917 | return "DW_OP_plus_uconst"; | |
9918 | case DW_OP_shl: | |
9919 | return "DW_OP_shl"; | |
9920 | case DW_OP_shr: | |
9921 | return "DW_OP_shr"; | |
9922 | case DW_OP_shra: | |
9923 | return "DW_OP_shra"; | |
9924 | case DW_OP_xor: | |
9925 | return "DW_OP_xor"; | |
9926 | case DW_OP_bra: | |
9927 | return "DW_OP_bra"; | |
9928 | case DW_OP_eq: | |
9929 | return "DW_OP_eq"; | |
9930 | case DW_OP_ge: | |
9931 | return "DW_OP_ge"; | |
9932 | case DW_OP_gt: | |
9933 | return "DW_OP_gt"; | |
9934 | case DW_OP_le: | |
9935 | return "DW_OP_le"; | |
9936 | case DW_OP_lt: | |
9937 | return "DW_OP_lt"; | |
9938 | case DW_OP_ne: | |
9939 | return "DW_OP_ne"; | |
9940 | case DW_OP_skip: | |
9941 | return "DW_OP_skip"; | |
9942 | case DW_OP_lit0: | |
9943 | return "DW_OP_lit0"; | |
9944 | case DW_OP_lit1: | |
9945 | return "DW_OP_lit1"; | |
9946 | case DW_OP_lit2: | |
9947 | return "DW_OP_lit2"; | |
9948 | case DW_OP_lit3: | |
9949 | return "DW_OP_lit3"; | |
9950 | case DW_OP_lit4: | |
9951 | return "DW_OP_lit4"; | |
9952 | case DW_OP_lit5: | |
9953 | return "DW_OP_lit5"; | |
9954 | case DW_OP_lit6: | |
9955 | return "DW_OP_lit6"; | |
9956 | case DW_OP_lit7: | |
9957 | return "DW_OP_lit7"; | |
9958 | case DW_OP_lit8: | |
9959 | return "DW_OP_lit8"; | |
9960 | case DW_OP_lit9: | |
9961 | return "DW_OP_lit9"; | |
9962 | case DW_OP_lit10: | |
9963 | return "DW_OP_lit10"; | |
9964 | case DW_OP_lit11: | |
9965 | return "DW_OP_lit11"; | |
9966 | case DW_OP_lit12: | |
9967 | return "DW_OP_lit12"; | |
9968 | case DW_OP_lit13: | |
9969 | return "DW_OP_lit13"; | |
9970 | case DW_OP_lit14: | |
9971 | return "DW_OP_lit14"; | |
9972 | case DW_OP_lit15: | |
9973 | return "DW_OP_lit15"; | |
9974 | case DW_OP_lit16: | |
9975 | return "DW_OP_lit16"; | |
9976 | case DW_OP_lit17: | |
9977 | return "DW_OP_lit17"; | |
9978 | case DW_OP_lit18: | |
9979 | return "DW_OP_lit18"; | |
9980 | case DW_OP_lit19: | |
9981 | return "DW_OP_lit19"; | |
9982 | case DW_OP_lit20: | |
9983 | return "DW_OP_lit20"; | |
9984 | case DW_OP_lit21: | |
9985 | return "DW_OP_lit21"; | |
9986 | case DW_OP_lit22: | |
9987 | return "DW_OP_lit22"; | |
9988 | case DW_OP_lit23: | |
9989 | return "DW_OP_lit23"; | |
9990 | case DW_OP_lit24: | |
9991 | return "DW_OP_lit24"; | |
9992 | case DW_OP_lit25: | |
9993 | return "DW_OP_lit25"; | |
9994 | case DW_OP_lit26: | |
9995 | return "DW_OP_lit26"; | |
9996 | case DW_OP_lit27: | |
9997 | return "DW_OP_lit27"; | |
9998 | case DW_OP_lit28: | |
9999 | return "DW_OP_lit28"; | |
10000 | case DW_OP_lit29: | |
10001 | return "DW_OP_lit29"; | |
10002 | case DW_OP_lit30: | |
10003 | return "DW_OP_lit30"; | |
10004 | case DW_OP_lit31: | |
10005 | return "DW_OP_lit31"; | |
10006 | case DW_OP_reg0: | |
10007 | return "DW_OP_reg0"; | |
10008 | case DW_OP_reg1: | |
10009 | return "DW_OP_reg1"; | |
10010 | case DW_OP_reg2: | |
10011 | return "DW_OP_reg2"; | |
10012 | case DW_OP_reg3: | |
10013 | return "DW_OP_reg3"; | |
10014 | case DW_OP_reg4: | |
10015 | return "DW_OP_reg4"; | |
10016 | case DW_OP_reg5: | |
10017 | return "DW_OP_reg5"; | |
10018 | case DW_OP_reg6: | |
10019 | return "DW_OP_reg6"; | |
10020 | case DW_OP_reg7: | |
10021 | return "DW_OP_reg7"; | |
10022 | case DW_OP_reg8: | |
10023 | return "DW_OP_reg8"; | |
10024 | case DW_OP_reg9: | |
10025 | return "DW_OP_reg9"; | |
10026 | case DW_OP_reg10: | |
10027 | return "DW_OP_reg10"; | |
10028 | case DW_OP_reg11: | |
10029 | return "DW_OP_reg11"; | |
10030 | case DW_OP_reg12: | |
10031 | return "DW_OP_reg12"; | |
10032 | case DW_OP_reg13: | |
10033 | return "DW_OP_reg13"; | |
10034 | case DW_OP_reg14: | |
10035 | return "DW_OP_reg14"; | |
10036 | case DW_OP_reg15: | |
10037 | return "DW_OP_reg15"; | |
10038 | case DW_OP_reg16: | |
10039 | return "DW_OP_reg16"; | |
10040 | case DW_OP_reg17: | |
10041 | return "DW_OP_reg17"; | |
10042 | case DW_OP_reg18: | |
10043 | return "DW_OP_reg18"; | |
10044 | case DW_OP_reg19: | |
10045 | return "DW_OP_reg19"; | |
10046 | case DW_OP_reg20: | |
10047 | return "DW_OP_reg20"; | |
10048 | case DW_OP_reg21: | |
10049 | return "DW_OP_reg21"; | |
10050 | case DW_OP_reg22: | |
10051 | return "DW_OP_reg22"; | |
10052 | case DW_OP_reg23: | |
10053 | return "DW_OP_reg23"; | |
10054 | case DW_OP_reg24: | |
10055 | return "DW_OP_reg24"; | |
10056 | case DW_OP_reg25: | |
10057 | return "DW_OP_reg25"; | |
10058 | case DW_OP_reg26: | |
10059 | return "DW_OP_reg26"; | |
10060 | case DW_OP_reg27: | |
10061 | return "DW_OP_reg27"; | |
10062 | case DW_OP_reg28: | |
10063 | return "DW_OP_reg28"; | |
10064 | case DW_OP_reg29: | |
10065 | return "DW_OP_reg29"; | |
10066 | case DW_OP_reg30: | |
10067 | return "DW_OP_reg30"; | |
10068 | case DW_OP_reg31: | |
10069 | return "DW_OP_reg31"; | |
10070 | case DW_OP_breg0: | |
10071 | return "DW_OP_breg0"; | |
10072 | case DW_OP_breg1: | |
10073 | return "DW_OP_breg1"; | |
10074 | case DW_OP_breg2: | |
10075 | return "DW_OP_breg2"; | |
10076 | case DW_OP_breg3: | |
10077 | return "DW_OP_breg3"; | |
10078 | case DW_OP_breg4: | |
10079 | return "DW_OP_breg4"; | |
10080 | case DW_OP_breg5: | |
10081 | return "DW_OP_breg5"; | |
10082 | case DW_OP_breg6: | |
10083 | return "DW_OP_breg6"; | |
10084 | case DW_OP_breg7: | |
10085 | return "DW_OP_breg7"; | |
10086 | case DW_OP_breg8: | |
10087 | return "DW_OP_breg8"; | |
10088 | case DW_OP_breg9: | |
10089 | return "DW_OP_breg9"; | |
10090 | case DW_OP_breg10: | |
10091 | return "DW_OP_breg10"; | |
10092 | case DW_OP_breg11: | |
10093 | return "DW_OP_breg11"; | |
10094 | case DW_OP_breg12: | |
10095 | return "DW_OP_breg12"; | |
10096 | case DW_OP_breg13: | |
10097 | return "DW_OP_breg13"; | |
10098 | case DW_OP_breg14: | |
10099 | return "DW_OP_breg14"; | |
10100 | case DW_OP_breg15: | |
10101 | return "DW_OP_breg15"; | |
10102 | case DW_OP_breg16: | |
10103 | return "DW_OP_breg16"; | |
10104 | case DW_OP_breg17: | |
10105 | return "DW_OP_breg17"; | |
10106 | case DW_OP_breg18: | |
10107 | return "DW_OP_breg18"; | |
10108 | case DW_OP_breg19: | |
10109 | return "DW_OP_breg19"; | |
10110 | case DW_OP_breg20: | |
10111 | return "DW_OP_breg20"; | |
10112 | case DW_OP_breg21: | |
10113 | return "DW_OP_breg21"; | |
10114 | case DW_OP_breg22: | |
10115 | return "DW_OP_breg22"; | |
10116 | case DW_OP_breg23: | |
10117 | return "DW_OP_breg23"; | |
10118 | case DW_OP_breg24: | |
10119 | return "DW_OP_breg24"; | |
10120 | case DW_OP_breg25: | |
10121 | return "DW_OP_breg25"; | |
10122 | case DW_OP_breg26: | |
10123 | return "DW_OP_breg26"; | |
10124 | case DW_OP_breg27: | |
10125 | return "DW_OP_breg27"; | |
10126 | case DW_OP_breg28: | |
10127 | return "DW_OP_breg28"; | |
10128 | case DW_OP_breg29: | |
10129 | return "DW_OP_breg29"; | |
10130 | case DW_OP_breg30: | |
10131 | return "DW_OP_breg30"; | |
10132 | case DW_OP_breg31: | |
10133 | return "DW_OP_breg31"; | |
10134 | case DW_OP_regx: | |
10135 | return "DW_OP_regx"; | |
10136 | case DW_OP_fbreg: | |
10137 | return "DW_OP_fbreg"; | |
10138 | case DW_OP_bregx: | |
10139 | return "DW_OP_bregx"; | |
10140 | case DW_OP_piece: | |
10141 | return "DW_OP_piece"; | |
10142 | case DW_OP_deref_size: | |
10143 | return "DW_OP_deref_size"; | |
10144 | case DW_OP_xderef_size: | |
10145 | return "DW_OP_xderef_size"; | |
10146 | case DW_OP_nop: | |
10147 | return "DW_OP_nop"; | |
b7619582 | 10148 | /* DWARF 3 extensions. */ |
ed348acc EZ |
10149 | case DW_OP_push_object_address: |
10150 | return "DW_OP_push_object_address"; | |
10151 | case DW_OP_call2: | |
10152 | return "DW_OP_call2"; | |
10153 | case DW_OP_call4: | |
10154 | return "DW_OP_call4"; | |
10155 | case DW_OP_call_ref: | |
10156 | return "DW_OP_call_ref"; | |
b7619582 GF |
10157 | /* GNU extensions. */ |
10158 | case DW_OP_form_tls_address: | |
10159 | return "DW_OP_form_tls_address"; | |
10160 | case DW_OP_call_frame_cfa: | |
10161 | return "DW_OP_call_frame_cfa"; | |
10162 | case DW_OP_bit_piece: | |
10163 | return "DW_OP_bit_piece"; | |
ed348acc EZ |
10164 | case DW_OP_GNU_push_tls_address: |
10165 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
10166 | case DW_OP_GNU_uninit: |
10167 | return "DW_OP_GNU_uninit"; | |
b7619582 GF |
10168 | /* HP extensions. */ |
10169 | case DW_OP_HP_is_value: | |
10170 | return "DW_OP_HP_is_value"; | |
10171 | case DW_OP_HP_fltconst4: | |
10172 | return "DW_OP_HP_fltconst4"; | |
10173 | case DW_OP_HP_fltconst8: | |
10174 | return "DW_OP_HP_fltconst8"; | |
10175 | case DW_OP_HP_mod_range: | |
10176 | return "DW_OP_HP_mod_range"; | |
10177 | case DW_OP_HP_unmod_range: | |
10178 | return "DW_OP_HP_unmod_range"; | |
10179 | case DW_OP_HP_tls: | |
10180 | return "DW_OP_HP_tls"; | |
c906108c SS |
10181 | default: |
10182 | return "OP_<unknown>"; | |
10183 | } | |
10184 | } | |
10185 | ||
10186 | static char * | |
fba45db2 | 10187 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
10188 | { |
10189 | if (mybool) | |
10190 | return "TRUE"; | |
10191 | else | |
10192 | return "FALSE"; | |
10193 | } | |
10194 | ||
10195 | /* Convert a DWARF type code into its string name. */ | |
10196 | ||
10197 | static char * | |
aa1ee363 | 10198 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
10199 | { |
10200 | switch (enc) | |
10201 | { | |
b7619582 GF |
10202 | case DW_ATE_void: |
10203 | return "DW_ATE_void"; | |
c906108c SS |
10204 | case DW_ATE_address: |
10205 | return "DW_ATE_address"; | |
10206 | case DW_ATE_boolean: | |
10207 | return "DW_ATE_boolean"; | |
10208 | case DW_ATE_complex_float: | |
10209 | return "DW_ATE_complex_float"; | |
10210 | case DW_ATE_float: | |
10211 | return "DW_ATE_float"; | |
10212 | case DW_ATE_signed: | |
10213 | return "DW_ATE_signed"; | |
10214 | case DW_ATE_signed_char: | |
10215 | return "DW_ATE_signed_char"; | |
10216 | case DW_ATE_unsigned: | |
10217 | return "DW_ATE_unsigned"; | |
10218 | case DW_ATE_unsigned_char: | |
10219 | return "DW_ATE_unsigned_char"; | |
b7619582 | 10220 | /* DWARF 3. */ |
d9fa45fe DC |
10221 | case DW_ATE_imaginary_float: |
10222 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
10223 | case DW_ATE_packed_decimal: |
10224 | return "DW_ATE_packed_decimal"; | |
10225 | case DW_ATE_numeric_string: | |
10226 | return "DW_ATE_numeric_string"; | |
10227 | case DW_ATE_edited: | |
10228 | return "DW_ATE_edited"; | |
10229 | case DW_ATE_signed_fixed: | |
10230 | return "DW_ATE_signed_fixed"; | |
10231 | case DW_ATE_unsigned_fixed: | |
10232 | return "DW_ATE_unsigned_fixed"; | |
10233 | case DW_ATE_decimal_float: | |
10234 | return "DW_ATE_decimal_float"; | |
10235 | /* HP extensions. */ | |
10236 | case DW_ATE_HP_float80: | |
10237 | return "DW_ATE_HP_float80"; | |
10238 | case DW_ATE_HP_complex_float80: | |
10239 | return "DW_ATE_HP_complex_float80"; | |
10240 | case DW_ATE_HP_float128: | |
10241 | return "DW_ATE_HP_float128"; | |
10242 | case DW_ATE_HP_complex_float128: | |
10243 | return "DW_ATE_HP_complex_float128"; | |
10244 | case DW_ATE_HP_floathpintel: | |
10245 | return "DW_ATE_HP_floathpintel"; | |
10246 | case DW_ATE_HP_imaginary_float80: | |
10247 | return "DW_ATE_HP_imaginary_float80"; | |
10248 | case DW_ATE_HP_imaginary_float128: | |
10249 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
10250 | default: |
10251 | return "DW_ATE_<unknown>"; | |
10252 | } | |
10253 | } | |
10254 | ||
10255 | /* Convert a DWARF call frame info operation to its string name. */ | |
10256 | ||
10257 | #if 0 | |
10258 | static char * | |
aa1ee363 | 10259 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
10260 | { |
10261 | switch (cfi_opc) | |
10262 | { | |
10263 | case DW_CFA_advance_loc: | |
10264 | return "DW_CFA_advance_loc"; | |
10265 | case DW_CFA_offset: | |
10266 | return "DW_CFA_offset"; | |
10267 | case DW_CFA_restore: | |
10268 | return "DW_CFA_restore"; | |
10269 | case DW_CFA_nop: | |
10270 | return "DW_CFA_nop"; | |
10271 | case DW_CFA_set_loc: | |
10272 | return "DW_CFA_set_loc"; | |
10273 | case DW_CFA_advance_loc1: | |
10274 | return "DW_CFA_advance_loc1"; | |
10275 | case DW_CFA_advance_loc2: | |
10276 | return "DW_CFA_advance_loc2"; | |
10277 | case DW_CFA_advance_loc4: | |
10278 | return "DW_CFA_advance_loc4"; | |
10279 | case DW_CFA_offset_extended: | |
10280 | return "DW_CFA_offset_extended"; | |
10281 | case DW_CFA_restore_extended: | |
10282 | return "DW_CFA_restore_extended"; | |
10283 | case DW_CFA_undefined: | |
10284 | return "DW_CFA_undefined"; | |
10285 | case DW_CFA_same_value: | |
10286 | return "DW_CFA_same_value"; | |
10287 | case DW_CFA_register: | |
10288 | return "DW_CFA_register"; | |
10289 | case DW_CFA_remember_state: | |
10290 | return "DW_CFA_remember_state"; | |
10291 | case DW_CFA_restore_state: | |
10292 | return "DW_CFA_restore_state"; | |
10293 | case DW_CFA_def_cfa: | |
10294 | return "DW_CFA_def_cfa"; | |
10295 | case DW_CFA_def_cfa_register: | |
10296 | return "DW_CFA_def_cfa_register"; | |
10297 | case DW_CFA_def_cfa_offset: | |
10298 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 10299 | /* DWARF 3. */ |
985cb1a3 JM |
10300 | case DW_CFA_def_cfa_expression: |
10301 | return "DW_CFA_def_cfa_expression"; | |
10302 | case DW_CFA_expression: | |
10303 | return "DW_CFA_expression"; | |
10304 | case DW_CFA_offset_extended_sf: | |
10305 | return "DW_CFA_offset_extended_sf"; | |
10306 | case DW_CFA_def_cfa_sf: | |
10307 | return "DW_CFA_def_cfa_sf"; | |
10308 | case DW_CFA_def_cfa_offset_sf: | |
10309 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
10310 | case DW_CFA_val_offset: |
10311 | return "DW_CFA_val_offset"; | |
10312 | case DW_CFA_val_offset_sf: | |
10313 | return "DW_CFA_val_offset_sf"; | |
10314 | case DW_CFA_val_expression: | |
10315 | return "DW_CFA_val_expression"; | |
10316 | /* SGI/MIPS specific. */ | |
c906108c SS |
10317 | case DW_CFA_MIPS_advance_loc8: |
10318 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 10319 | /* GNU extensions. */ |
985cb1a3 JM |
10320 | case DW_CFA_GNU_window_save: |
10321 | return "DW_CFA_GNU_window_save"; | |
10322 | case DW_CFA_GNU_args_size: | |
10323 | return "DW_CFA_GNU_args_size"; | |
10324 | case DW_CFA_GNU_negative_offset_extended: | |
10325 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
10326 | default: |
10327 | return "DW_CFA_<unknown>"; | |
10328 | } | |
10329 | } | |
10330 | #endif | |
10331 | ||
f9aca02d | 10332 | static void |
d97bc12b | 10333 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
10334 | { |
10335 | unsigned int i; | |
10336 | ||
d97bc12b DE |
10337 | print_spaces (indent, f); |
10338 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 10339 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
10340 | |
10341 | if (die->parent != NULL) | |
10342 | { | |
10343 | print_spaces (indent, f); | |
10344 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
10345 | die->parent->offset); | |
10346 | } | |
10347 | ||
10348 | print_spaces (indent, f); | |
10349 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 10350 | dwarf_bool_name (die->child != NULL)); |
c906108c | 10351 | |
d97bc12b DE |
10352 | print_spaces (indent, f); |
10353 | fprintf_unfiltered (f, " attributes:\n"); | |
10354 | ||
c906108c SS |
10355 | for (i = 0; i < die->num_attrs; ++i) |
10356 | { | |
d97bc12b DE |
10357 | print_spaces (indent, f); |
10358 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
10359 | dwarf_attr_name (die->attrs[i].name), |
10360 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 10361 | |
c906108c SS |
10362 | switch (die->attrs[i].form) |
10363 | { | |
10364 | case DW_FORM_ref_addr: | |
10365 | case DW_FORM_addr: | |
d97bc12b | 10366 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 10367 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
10368 | break; |
10369 | case DW_FORM_block2: | |
10370 | case DW_FORM_block4: | |
10371 | case DW_FORM_block: | |
10372 | case DW_FORM_block1: | |
d97bc12b | 10373 | fprintf_unfiltered (f, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 10374 | break; |
2dc7f7b3 TT |
10375 | case DW_FORM_exprloc: |
10376 | fprintf_unfiltered (f, "expression: size %u", | |
10377 | DW_BLOCK (&die->attrs[i])->size); | |
10378 | break; | |
10b3939b DJ |
10379 | case DW_FORM_ref1: |
10380 | case DW_FORM_ref2: | |
10381 | case DW_FORM_ref4: | |
d97bc12b | 10382 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
10383 | (long) (DW_ADDR (&die->attrs[i]))); |
10384 | break; | |
c906108c SS |
10385 | case DW_FORM_data1: |
10386 | case DW_FORM_data2: | |
10387 | case DW_FORM_data4: | |
ce5d95e1 | 10388 | case DW_FORM_data8: |
c906108c SS |
10389 | case DW_FORM_udata: |
10390 | case DW_FORM_sdata: | |
43bbcdc2 PH |
10391 | fprintf_unfiltered (f, "constant: %s", |
10392 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 10393 | break; |
2dc7f7b3 TT |
10394 | case DW_FORM_sec_offset: |
10395 | fprintf_unfiltered (f, "section offset: %s", | |
10396 | pulongest (DW_UNSND (&die->attrs[i]))); | |
10397 | break; | |
348e048f DE |
10398 | case DW_FORM_sig8: |
10399 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) | |
10400 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
10401 | DW_SIGNATURED_TYPE (&die->attrs[i])->offset); | |
10402 | else | |
10403 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
10404 | break; | |
c906108c | 10405 | case DW_FORM_string: |
4bdf3d34 | 10406 | case DW_FORM_strp: |
8285870a | 10407 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 10408 | DW_STRING (&die->attrs[i]) |
8285870a JK |
10409 | ? DW_STRING (&die->attrs[i]) : "", |
10410 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
10411 | break; |
10412 | case DW_FORM_flag: | |
10413 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 10414 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 10415 | else |
d97bc12b | 10416 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 10417 | break; |
2dc7f7b3 TT |
10418 | case DW_FORM_flag_present: |
10419 | fprintf_unfiltered (f, "flag: TRUE"); | |
10420 | break; | |
a8329558 KW |
10421 | case DW_FORM_indirect: |
10422 | /* the reader will have reduced the indirect form to | |
10423 | the "base form" so this form should not occur */ | |
d97bc12b | 10424 | fprintf_unfiltered (f, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 10425 | break; |
c906108c | 10426 | default: |
d97bc12b | 10427 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 10428 | die->attrs[i].form); |
d97bc12b | 10429 | break; |
c906108c | 10430 | } |
d97bc12b | 10431 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
10432 | } |
10433 | } | |
10434 | ||
f9aca02d | 10435 | static void |
d97bc12b | 10436 | dump_die_for_error (struct die_info *die) |
c906108c | 10437 | { |
d97bc12b DE |
10438 | dump_die_shallow (gdb_stderr, 0, die); |
10439 | } | |
10440 | ||
10441 | static void | |
10442 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
10443 | { | |
10444 | int indent = level * 4; | |
10445 | ||
10446 | gdb_assert (die != NULL); | |
10447 | ||
10448 | if (level >= max_level) | |
10449 | return; | |
10450 | ||
10451 | dump_die_shallow (f, indent, die); | |
10452 | ||
10453 | if (die->child != NULL) | |
c906108c | 10454 | { |
d97bc12b DE |
10455 | print_spaces (indent, f); |
10456 | fprintf_unfiltered (f, " Children:"); | |
10457 | if (level + 1 < max_level) | |
10458 | { | |
10459 | fprintf_unfiltered (f, "\n"); | |
10460 | dump_die_1 (f, level + 1, max_level, die->child); | |
10461 | } | |
10462 | else | |
10463 | { | |
10464 | fprintf_unfiltered (f, " [not printed, max nesting level reached]\n"); | |
10465 | } | |
10466 | } | |
10467 | ||
10468 | if (die->sibling != NULL && level > 0) | |
10469 | { | |
10470 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
10471 | } |
10472 | } | |
10473 | ||
d97bc12b DE |
10474 | /* This is called from the pdie macro in gdbinit.in. |
10475 | It's not static so gcc will keep a copy callable from gdb. */ | |
10476 | ||
10477 | void | |
10478 | dump_die (struct die_info *die, int max_level) | |
10479 | { | |
10480 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
10481 | } | |
10482 | ||
f9aca02d | 10483 | static void |
51545339 | 10484 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10485 | { |
51545339 | 10486 | void **slot; |
c906108c | 10487 | |
51545339 DJ |
10488 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
10489 | ||
10490 | *slot = die; | |
c906108c SS |
10491 | } |
10492 | ||
93311388 DE |
10493 | static int |
10494 | is_ref_attr (struct attribute *attr) | |
c906108c | 10495 | { |
c906108c SS |
10496 | switch (attr->form) |
10497 | { | |
10498 | case DW_FORM_ref_addr: | |
c906108c SS |
10499 | case DW_FORM_ref1: |
10500 | case DW_FORM_ref2: | |
10501 | case DW_FORM_ref4: | |
613e1657 | 10502 | case DW_FORM_ref8: |
c906108c | 10503 | case DW_FORM_ref_udata: |
93311388 | 10504 | return 1; |
c906108c | 10505 | default: |
93311388 | 10506 | return 0; |
c906108c | 10507 | } |
93311388 DE |
10508 | } |
10509 | ||
10510 | static unsigned int | |
10511 | dwarf2_get_ref_die_offset (struct attribute *attr) | |
10512 | { | |
10513 | if (is_ref_attr (attr)) | |
10514 | return DW_ADDR (attr); | |
10515 | ||
10516 | complaint (&symfile_complaints, | |
10517 | _("unsupported die ref attribute form: '%s'"), | |
10518 | dwarf_form_name (attr->form)); | |
10519 | return 0; | |
c906108c SS |
10520 | } |
10521 | ||
43bbcdc2 PH |
10522 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
10523 | * the value held by the attribute is not constant. */ | |
a02abb62 | 10524 | |
43bbcdc2 | 10525 | static LONGEST |
a02abb62 JB |
10526 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
10527 | { | |
10528 | if (attr->form == DW_FORM_sdata) | |
10529 | return DW_SND (attr); | |
10530 | else if (attr->form == DW_FORM_udata | |
10531 | || attr->form == DW_FORM_data1 | |
10532 | || attr->form == DW_FORM_data2 | |
10533 | || attr->form == DW_FORM_data4 | |
10534 | || attr->form == DW_FORM_data8) | |
10535 | return DW_UNSND (attr); | |
10536 | else | |
10537 | { | |
e2e0b3e5 | 10538 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
10539 | dwarf_form_name (attr->form)); |
10540 | return default_value; | |
10541 | } | |
10542 | } | |
10543 | ||
03dd20cc | 10544 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
10545 | unit and add it to our queue. |
10546 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
10547 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 10548 | |
348e048f | 10549 | static int |
03dd20cc DJ |
10550 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
10551 | struct dwarf2_per_cu_data *per_cu) | |
10552 | { | |
10553 | /* Mark the dependence relation so that we don't flush PER_CU | |
10554 | too early. */ | |
10555 | dwarf2_add_dependence (this_cu, per_cu); | |
10556 | ||
10557 | /* If it's already on the queue, we have nothing to do. */ | |
10558 | if (per_cu->queued) | |
348e048f | 10559 | return 0; |
03dd20cc DJ |
10560 | |
10561 | /* If the compilation unit is already loaded, just mark it as | |
10562 | used. */ | |
10563 | if (per_cu->cu != NULL) | |
10564 | { | |
10565 | per_cu->cu->last_used = 0; | |
348e048f | 10566 | return 0; |
03dd20cc DJ |
10567 | } |
10568 | ||
10569 | /* Add it to the queue. */ | |
10570 | queue_comp_unit (per_cu, this_cu->objfile); | |
348e048f DE |
10571 | |
10572 | return 1; | |
10573 | } | |
10574 | ||
10575 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
10576 | On entry *REF_CU is the CU of SRC_DIE. | |
10577 | On exit *REF_CU is the CU of the result. */ | |
10578 | ||
10579 | static struct die_info * | |
10580 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
10581 | struct dwarf2_cu **ref_cu) | |
10582 | { | |
10583 | struct die_info *die; | |
10584 | ||
10585 | if (is_ref_attr (attr)) | |
10586 | die = follow_die_ref (src_die, attr, ref_cu); | |
10587 | else if (attr->form == DW_FORM_sig8) | |
10588 | die = follow_die_sig (src_die, attr, ref_cu); | |
10589 | else | |
10590 | { | |
10591 | dump_die_for_error (src_die); | |
10592 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
10593 | (*ref_cu)->objfile->name); | |
10594 | } | |
10595 | ||
10596 | return die; | |
03dd20cc DJ |
10597 | } |
10598 | ||
f504f079 DE |
10599 | /* Follow reference attribute ATTR of SRC_DIE. |
10600 | On entry *REF_CU is the CU of SRC_DIE. | |
10601 | On exit *REF_CU is the CU of the result. */ | |
10602 | ||
f9aca02d | 10603 | static struct die_info * |
10b3939b | 10604 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
f2f0e013 | 10605 | struct dwarf2_cu **ref_cu) |
c906108c SS |
10606 | { |
10607 | struct die_info *die; | |
10b3939b | 10608 | unsigned int offset; |
10b3939b | 10609 | struct die_info temp_die; |
f2f0e013 | 10610 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 10611 | |
348e048f DE |
10612 | gdb_assert (cu->per_cu != NULL); |
10613 | ||
c764a876 | 10614 | offset = dwarf2_get_ref_die_offset (attr); |
10b3939b | 10615 | |
348e048f DE |
10616 | if (cu->per_cu->from_debug_types) |
10617 | { | |
10618 | /* .debug_types CUs cannot reference anything outside their CU. | |
10619 | If they need to, they have to reference a signatured type via | |
10620 | DW_FORM_sig8. */ | |
10621 | if (! offset_in_cu_p (&cu->header, offset)) | |
10622 | goto not_found; | |
10623 | target_cu = cu; | |
10624 | } | |
10625 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
10626 | { |
10627 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 10628 | |
45452591 | 10629 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
10630 | |
10631 | /* If necessary, add it to the queue and load its DIEs. */ | |
348e048f DE |
10632 | if (maybe_queue_comp_unit (cu, per_cu)) |
10633 | load_full_comp_unit (per_cu, cu->objfile); | |
03dd20cc | 10634 | |
10b3939b DJ |
10635 | target_cu = per_cu->cu; |
10636 | } | |
10637 | else | |
10638 | target_cu = cu; | |
c906108c | 10639 | |
f2f0e013 | 10640 | *ref_cu = target_cu; |
51545339 DJ |
10641 | temp_die.offset = offset; |
10642 | die = htab_find_with_hash (target_cu->die_hash, &temp_die, offset); | |
10643 | if (die) | |
10644 | return die; | |
10b3939b | 10645 | |
348e048f DE |
10646 | not_found: |
10647 | ||
10648 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
10649 | "at 0x%x [in module %s]"), | |
10650 | offset, src_die->offset, cu->objfile->name); | |
10651 | } | |
10652 | ||
10653 | /* Follow the signature attribute ATTR in SRC_DIE. | |
10654 | On entry *REF_CU is the CU of SRC_DIE. | |
10655 | On exit *REF_CU is the CU of the result. */ | |
10656 | ||
10657 | static struct die_info * | |
10658 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
10659 | struct dwarf2_cu **ref_cu) | |
10660 | { | |
10661 | struct objfile *objfile = (*ref_cu)->objfile; | |
10662 | struct die_info temp_die; | |
10663 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
10664 | struct dwarf2_cu *sig_cu; | |
10665 | struct die_info *die; | |
10666 | ||
10667 | /* sig_type will be NULL if the signatured type is missing from | |
10668 | the debug info. */ | |
10669 | if (sig_type == NULL) | |
10670 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
10671 | "at 0x%x [in module %s]"), | |
10672 | src_die->offset, objfile->name); | |
10673 | ||
10674 | /* If necessary, add it to the queue and load its DIEs. */ | |
10675 | ||
10676 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu)) | |
10677 | read_signatured_type (objfile, sig_type); | |
10678 | ||
10679 | gdb_assert (sig_type->per_cu.cu != NULL); | |
10680 | ||
10681 | sig_cu = sig_type->per_cu.cu; | |
10682 | temp_die.offset = sig_cu->header.offset + sig_type->type_offset; | |
10683 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, temp_die.offset); | |
10684 | if (die) | |
10685 | { | |
10686 | *ref_cu = sig_cu; | |
10687 | return die; | |
10688 | } | |
10689 | ||
10690 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced from DIE " | |
10691 | "at 0x%x [in module %s]"), | |
10692 | sig_type->type_offset, src_die->offset, objfile->name); | |
10693 | } | |
10694 | ||
10695 | /* Given an offset of a signatured type, return its signatured_type. */ | |
10696 | ||
10697 | static struct signatured_type * | |
10698 | lookup_signatured_type_at_offset (struct objfile *objfile, unsigned int offset) | |
10699 | { | |
10700 | gdb_byte *info_ptr = dwarf2_per_objfile->types.buffer + offset; | |
10701 | unsigned int length, initial_length_size; | |
10702 | unsigned int sig_offset; | |
10703 | struct signatured_type find_entry, *type_sig; | |
10704 | ||
10705 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
10706 | sig_offset = (initial_length_size | |
10707 | + 2 /*version*/ | |
10708 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
10709 | + 1 /*address_size*/); | |
10710 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
10711 | type_sig = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
10712 | ||
10713 | /* This is only used to lookup previously recorded types. | |
10714 | If we didn't find it, it's our bug. */ | |
10715 | gdb_assert (type_sig != NULL); | |
10716 | gdb_assert (offset == type_sig->offset); | |
10717 | ||
10718 | return type_sig; | |
10719 | } | |
10720 | ||
10721 | /* Read in signatured type at OFFSET and build its CU and die(s). */ | |
10722 | ||
10723 | static void | |
10724 | read_signatured_type_at_offset (struct objfile *objfile, | |
10725 | unsigned int offset) | |
10726 | { | |
10727 | struct signatured_type *type_sig; | |
10728 | ||
be391dca TT |
10729 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
10730 | ||
348e048f DE |
10731 | /* We have the section offset, but we need the signature to do the |
10732 | hash table lookup. */ | |
10733 | type_sig = lookup_signatured_type_at_offset (objfile, offset); | |
10734 | ||
10735 | gdb_assert (type_sig->per_cu.cu == NULL); | |
10736 | ||
10737 | read_signatured_type (objfile, type_sig); | |
10738 | ||
10739 | gdb_assert (type_sig->per_cu.cu != NULL); | |
10740 | } | |
10741 | ||
10742 | /* Read in a signatured type and build its CU and DIEs. */ | |
10743 | ||
10744 | static void | |
10745 | read_signatured_type (struct objfile *objfile, | |
10746 | struct signatured_type *type_sig) | |
10747 | { | |
10748 | gdb_byte *types_ptr = dwarf2_per_objfile->types.buffer + type_sig->offset; | |
10749 | struct die_reader_specs reader_specs; | |
10750 | struct dwarf2_cu *cu; | |
10751 | ULONGEST signature; | |
10752 | struct cleanup *back_to, *free_cu_cleanup; | |
10753 | struct attribute *attr; | |
10754 | ||
10755 | gdb_assert (type_sig->per_cu.cu == NULL); | |
10756 | ||
10757 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
10758 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
10759 | obstack_init (&cu->comp_unit_obstack); | |
10760 | cu->objfile = objfile; | |
10761 | type_sig->per_cu.cu = cu; | |
10762 | cu->per_cu = &type_sig->per_cu; | |
10763 | ||
10764 | /* If an error occurs while loading, release our storage. */ | |
10765 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
10766 | ||
10767 | types_ptr = read_type_comp_unit_head (&cu->header, &signature, | |
10768 | types_ptr, objfile->obfd); | |
10769 | gdb_assert (signature == type_sig->signature); | |
10770 | ||
10771 | cu->die_hash | |
10772 | = htab_create_alloc_ex (cu->header.length / 12, | |
10773 | die_hash, | |
10774 | die_eq, | |
10775 | NULL, | |
10776 | &cu->comp_unit_obstack, | |
10777 | hashtab_obstack_allocate, | |
10778 | dummy_obstack_deallocate); | |
10779 | ||
10780 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
10781 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
10782 | ||
10783 | init_cu_die_reader (&reader_specs, cu); | |
10784 | ||
10785 | cu->dies = read_die_and_children (&reader_specs, types_ptr, &types_ptr, | |
10786 | NULL /*parent*/); | |
10787 | ||
10788 | /* We try not to read any attributes in this function, because not | |
10789 | all objfiles needed for references have been loaded yet, and symbol | |
10790 | table processing isn't initialized. But we have to set the CU language, | |
10791 | or we won't be able to build types correctly. */ | |
10792 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
10793 | if (attr) | |
10794 | set_cu_language (DW_UNSND (attr), cu); | |
10795 | else | |
10796 | set_cu_language (language_minimal, cu); | |
10797 | ||
10798 | do_cleanups (back_to); | |
10799 | ||
10800 | /* We've successfully allocated this compilation unit. Let our caller | |
10801 | clean it up when finished with it. */ | |
10802 | discard_cleanups (free_cu_cleanup); | |
10803 | ||
10804 | type_sig->per_cu.cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
10805 | dwarf2_per_objfile->read_in_chain = &type_sig->per_cu; | |
c906108c SS |
10806 | } |
10807 | ||
c906108c SS |
10808 | /* Decode simple location descriptions. |
10809 | Given a pointer to a dwarf block that defines a location, compute | |
10810 | the location and return the value. | |
10811 | ||
4cecd739 DJ |
10812 | NOTE drow/2003-11-18: This function is called in two situations |
10813 | now: for the address of static or global variables (partial symbols | |
10814 | only) and for offsets into structures which are expected to be | |
10815 | (more or less) constant. The partial symbol case should go away, | |
10816 | and only the constant case should remain. That will let this | |
10817 | function complain more accurately. A few special modes are allowed | |
10818 | without complaint for global variables (for instance, global | |
10819 | register values and thread-local values). | |
c906108c SS |
10820 | |
10821 | A location description containing no operations indicates that the | |
4cecd739 | 10822 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
10823 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
10824 | callers will only want a very basic result and this can become a | |
10825 | complaint. | |
c906108c | 10826 | |
c906108c SS |
10827 | Note that stack[0] is unused except as a default error return. |
10828 | Note that stack overflow is not yet handled. */ | |
10829 | ||
10830 | static CORE_ADDR | |
e7c27a73 | 10831 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 10832 | { |
e7c27a73 | 10833 | struct objfile *objfile = cu->objfile; |
c906108c SS |
10834 | int i; |
10835 | int size = blk->size; | |
fe1b8b76 | 10836 | gdb_byte *data = blk->data; |
c906108c SS |
10837 | CORE_ADDR stack[64]; |
10838 | int stacki; | |
10839 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 10840 | gdb_byte op; |
c906108c SS |
10841 | |
10842 | i = 0; | |
10843 | stacki = 0; | |
10844 | stack[stacki] = 0; | |
c906108c SS |
10845 | |
10846 | while (i < size) | |
10847 | { | |
c906108c SS |
10848 | op = data[i++]; |
10849 | switch (op) | |
10850 | { | |
f1bea926 JM |
10851 | case DW_OP_lit0: |
10852 | case DW_OP_lit1: | |
10853 | case DW_OP_lit2: | |
10854 | case DW_OP_lit3: | |
10855 | case DW_OP_lit4: | |
10856 | case DW_OP_lit5: | |
10857 | case DW_OP_lit6: | |
10858 | case DW_OP_lit7: | |
10859 | case DW_OP_lit8: | |
10860 | case DW_OP_lit9: | |
10861 | case DW_OP_lit10: | |
10862 | case DW_OP_lit11: | |
10863 | case DW_OP_lit12: | |
10864 | case DW_OP_lit13: | |
10865 | case DW_OP_lit14: | |
10866 | case DW_OP_lit15: | |
10867 | case DW_OP_lit16: | |
10868 | case DW_OP_lit17: | |
10869 | case DW_OP_lit18: | |
10870 | case DW_OP_lit19: | |
10871 | case DW_OP_lit20: | |
10872 | case DW_OP_lit21: | |
10873 | case DW_OP_lit22: | |
10874 | case DW_OP_lit23: | |
10875 | case DW_OP_lit24: | |
10876 | case DW_OP_lit25: | |
10877 | case DW_OP_lit26: | |
10878 | case DW_OP_lit27: | |
10879 | case DW_OP_lit28: | |
10880 | case DW_OP_lit29: | |
10881 | case DW_OP_lit30: | |
10882 | case DW_OP_lit31: | |
10883 | stack[++stacki] = op - DW_OP_lit0; | |
10884 | break; | |
10885 | ||
c906108c SS |
10886 | case DW_OP_reg0: |
10887 | case DW_OP_reg1: | |
10888 | case DW_OP_reg2: | |
10889 | case DW_OP_reg3: | |
10890 | case DW_OP_reg4: | |
10891 | case DW_OP_reg5: | |
10892 | case DW_OP_reg6: | |
10893 | case DW_OP_reg7: | |
10894 | case DW_OP_reg8: | |
10895 | case DW_OP_reg9: | |
10896 | case DW_OP_reg10: | |
10897 | case DW_OP_reg11: | |
10898 | case DW_OP_reg12: | |
10899 | case DW_OP_reg13: | |
10900 | case DW_OP_reg14: | |
10901 | case DW_OP_reg15: | |
10902 | case DW_OP_reg16: | |
10903 | case DW_OP_reg17: | |
10904 | case DW_OP_reg18: | |
10905 | case DW_OP_reg19: | |
10906 | case DW_OP_reg20: | |
10907 | case DW_OP_reg21: | |
10908 | case DW_OP_reg22: | |
10909 | case DW_OP_reg23: | |
10910 | case DW_OP_reg24: | |
10911 | case DW_OP_reg25: | |
10912 | case DW_OP_reg26: | |
10913 | case DW_OP_reg27: | |
10914 | case DW_OP_reg28: | |
10915 | case DW_OP_reg29: | |
10916 | case DW_OP_reg30: | |
10917 | case DW_OP_reg31: | |
c906108c | 10918 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
10919 | if (i < size) |
10920 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
10921 | break; |
10922 | ||
10923 | case DW_OP_regx: | |
c906108c SS |
10924 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
10925 | i += bytes_read; | |
c906108c | 10926 | stack[++stacki] = unsnd; |
4cecd739 DJ |
10927 | if (i < size) |
10928 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
10929 | break; |
10930 | ||
10931 | case DW_OP_addr: | |
107d2387 | 10932 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 10933 | cu, &bytes_read); |
107d2387 | 10934 | i += bytes_read; |
c906108c SS |
10935 | break; |
10936 | ||
10937 | case DW_OP_const1u: | |
10938 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
10939 | i += 1; | |
10940 | break; | |
10941 | ||
10942 | case DW_OP_const1s: | |
10943 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
10944 | i += 1; | |
10945 | break; | |
10946 | ||
10947 | case DW_OP_const2u: | |
10948 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
10949 | i += 2; | |
10950 | break; | |
10951 | ||
10952 | case DW_OP_const2s: | |
10953 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
10954 | i += 2; | |
10955 | break; | |
10956 | ||
10957 | case DW_OP_const4u: | |
10958 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
10959 | i += 4; | |
10960 | break; | |
10961 | ||
10962 | case DW_OP_const4s: | |
10963 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
10964 | i += 4; | |
10965 | break; | |
10966 | ||
10967 | case DW_OP_constu: | |
10968 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 10969 | &bytes_read); |
c906108c SS |
10970 | i += bytes_read; |
10971 | break; | |
10972 | ||
10973 | case DW_OP_consts: | |
10974 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
10975 | i += bytes_read; | |
10976 | break; | |
10977 | ||
f1bea926 JM |
10978 | case DW_OP_dup: |
10979 | stack[stacki + 1] = stack[stacki]; | |
10980 | stacki++; | |
10981 | break; | |
10982 | ||
c906108c SS |
10983 | case DW_OP_plus: |
10984 | stack[stacki - 1] += stack[stacki]; | |
10985 | stacki--; | |
10986 | break; | |
10987 | ||
10988 | case DW_OP_plus_uconst: | |
10989 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
10990 | i += bytes_read; | |
10991 | break; | |
10992 | ||
10993 | case DW_OP_minus: | |
f1bea926 | 10994 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
10995 | stacki--; |
10996 | break; | |
10997 | ||
7a292a7a | 10998 | case DW_OP_deref: |
7a292a7a | 10999 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
11000 | this using GDB's address_class enum. This is valid for partial |
11001 | global symbols, although the variable's address will be bogus | |
11002 | in the psymtab. */ | |
7a292a7a | 11003 | if (i < size) |
4d3c2250 | 11004 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
11005 | break; |
11006 | ||
9d774e44 | 11007 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
11008 | /* The top of the stack has the offset from the beginning |
11009 | of the thread control block at which the variable is located. */ | |
11010 | /* Nothing should follow this operator, so the top of stack would | |
11011 | be returned. */ | |
4cecd739 DJ |
11012 | /* This is valid for partial global symbols, but the variable's |
11013 | address will be bogus in the psymtab. */ | |
9d774e44 | 11014 | if (i < size) |
4d3c2250 | 11015 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
11016 | break; |
11017 | ||
42be36b3 CT |
11018 | case DW_OP_GNU_uninit: |
11019 | break; | |
11020 | ||
c906108c | 11021 | default: |
e2e0b3e5 | 11022 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
4d3c2250 | 11023 | dwarf_stack_op_name (op)); |
c906108c SS |
11024 | return (stack[stacki]); |
11025 | } | |
11026 | } | |
11027 | return (stack[stacki]); | |
11028 | } | |
11029 | ||
11030 | /* memory allocation interface */ | |
11031 | ||
c906108c | 11032 | static struct dwarf_block * |
7b5a2f43 | 11033 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
11034 | { |
11035 | struct dwarf_block *blk; | |
11036 | ||
11037 | blk = (struct dwarf_block *) | |
7b5a2f43 | 11038 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
11039 | return (blk); |
11040 | } | |
11041 | ||
11042 | static struct abbrev_info * | |
f3dd6933 | 11043 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
11044 | { |
11045 | struct abbrev_info *abbrev; | |
11046 | ||
f3dd6933 DJ |
11047 | abbrev = (struct abbrev_info *) |
11048 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
11049 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
11050 | return (abbrev); | |
11051 | } | |
11052 | ||
11053 | static struct die_info * | |
b60c80d6 | 11054 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
11055 | { |
11056 | struct die_info *die; | |
b60c80d6 DJ |
11057 | size_t size = sizeof (struct die_info); |
11058 | ||
11059 | if (num_attrs > 1) | |
11060 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 11061 | |
b60c80d6 | 11062 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
11063 | memset (die, 0, sizeof (struct die_info)); |
11064 | return (die); | |
11065 | } | |
2e276125 JB |
11066 | |
11067 | \f | |
11068 | /* Macro support. */ | |
11069 | ||
11070 | ||
11071 | /* Return the full name of file number I in *LH's file name table. | |
11072 | Use COMP_DIR as the name of the current directory of the | |
11073 | compilation. The result is allocated using xmalloc; the caller is | |
11074 | responsible for freeing it. */ | |
11075 | static char * | |
11076 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
11077 | { | |
6a83a1e6 EZ |
11078 | /* Is the file number a valid index into the line header's file name |
11079 | table? Remember that file numbers start with one, not zero. */ | |
11080 | if (1 <= file && file <= lh->num_file_names) | |
11081 | { | |
11082 | struct file_entry *fe = &lh->file_names[file - 1]; | |
2e276125 | 11083 | |
6a83a1e6 EZ |
11084 | if (IS_ABSOLUTE_PATH (fe->name)) |
11085 | return xstrdup (fe->name); | |
11086 | else | |
11087 | { | |
11088 | const char *dir; | |
11089 | int dir_len; | |
11090 | char *full_name; | |
11091 | ||
11092 | if (fe->dir_index) | |
11093 | dir = lh->include_dirs[fe->dir_index - 1]; | |
11094 | else | |
11095 | dir = comp_dir; | |
11096 | ||
11097 | if (dir) | |
11098 | { | |
11099 | dir_len = strlen (dir); | |
11100 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
11101 | strcpy (full_name, dir); | |
11102 | full_name[dir_len] = '/'; | |
11103 | strcpy (full_name + dir_len + 1, fe->name); | |
11104 | return full_name; | |
11105 | } | |
11106 | else | |
11107 | return xstrdup (fe->name); | |
11108 | } | |
11109 | } | |
2e276125 JB |
11110 | else |
11111 | { | |
6a83a1e6 EZ |
11112 | /* The compiler produced a bogus file number. We can at least |
11113 | record the macro definitions made in the file, even if we | |
11114 | won't be able to find the file by name. */ | |
11115 | char fake_name[80]; | |
9a619af0 | 11116 | |
6a83a1e6 | 11117 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 11118 | |
6a83a1e6 EZ |
11119 | complaint (&symfile_complaints, |
11120 | _("bad file number in macro information (%d)"), | |
11121 | file); | |
2e276125 | 11122 | |
6a83a1e6 | 11123 | return xstrdup (fake_name); |
2e276125 JB |
11124 | } |
11125 | } | |
11126 | ||
11127 | ||
11128 | static struct macro_source_file * | |
11129 | macro_start_file (int file, int line, | |
11130 | struct macro_source_file *current_file, | |
11131 | const char *comp_dir, | |
11132 | struct line_header *lh, struct objfile *objfile) | |
11133 | { | |
11134 | /* The full name of this source file. */ | |
11135 | char *full_name = file_full_name (file, lh, comp_dir); | |
11136 | ||
11137 | /* We don't create a macro table for this compilation unit | |
11138 | at all until we actually get a filename. */ | |
11139 | if (! pending_macros) | |
4a146b47 | 11140 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 11141 | objfile->macro_cache); |
2e276125 JB |
11142 | |
11143 | if (! current_file) | |
11144 | /* If we have no current file, then this must be the start_file | |
11145 | directive for the compilation unit's main source file. */ | |
11146 | current_file = macro_set_main (pending_macros, full_name); | |
11147 | else | |
11148 | current_file = macro_include (current_file, line, full_name); | |
11149 | ||
11150 | xfree (full_name); | |
11151 | ||
11152 | return current_file; | |
11153 | } | |
11154 | ||
11155 | ||
11156 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
11157 | followed by a null byte. */ | |
11158 | static char * | |
11159 | copy_string (const char *buf, int len) | |
11160 | { | |
11161 | char *s = xmalloc (len + 1); | |
9a619af0 | 11162 | |
2e276125 JB |
11163 | memcpy (s, buf, len); |
11164 | s[len] = '\0'; | |
2e276125 JB |
11165 | return s; |
11166 | } | |
11167 | ||
11168 | ||
11169 | static const char * | |
11170 | consume_improper_spaces (const char *p, const char *body) | |
11171 | { | |
11172 | if (*p == ' ') | |
11173 | { | |
4d3c2250 | 11174 | complaint (&symfile_complaints, |
e2e0b3e5 | 11175 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 11176 | body); |
2e276125 JB |
11177 | |
11178 | while (*p == ' ') | |
11179 | p++; | |
11180 | } | |
11181 | ||
11182 | return p; | |
11183 | } | |
11184 | ||
11185 | ||
11186 | static void | |
11187 | parse_macro_definition (struct macro_source_file *file, int line, | |
11188 | const char *body) | |
11189 | { | |
11190 | const char *p; | |
11191 | ||
11192 | /* The body string takes one of two forms. For object-like macro | |
11193 | definitions, it should be: | |
11194 | ||
11195 | <macro name> " " <definition> | |
11196 | ||
11197 | For function-like macro definitions, it should be: | |
11198 | ||
11199 | <macro name> "() " <definition> | |
11200 | or | |
11201 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
11202 | ||
11203 | Spaces may appear only where explicitly indicated, and in the | |
11204 | <definition>. | |
11205 | ||
11206 | The Dwarf 2 spec says that an object-like macro's name is always | |
11207 | followed by a space, but versions of GCC around March 2002 omit | |
11208 | the space when the macro's definition is the empty string. | |
11209 | ||
11210 | The Dwarf 2 spec says that there should be no spaces between the | |
11211 | formal arguments in a function-like macro's formal argument list, | |
11212 | but versions of GCC around March 2002 include spaces after the | |
11213 | commas. */ | |
11214 | ||
11215 | ||
11216 | /* Find the extent of the macro name. The macro name is terminated | |
11217 | by either a space or null character (for an object-like macro) or | |
11218 | an opening paren (for a function-like macro). */ | |
11219 | for (p = body; *p; p++) | |
11220 | if (*p == ' ' || *p == '(') | |
11221 | break; | |
11222 | ||
11223 | if (*p == ' ' || *p == '\0') | |
11224 | { | |
11225 | /* It's an object-like macro. */ | |
11226 | int name_len = p - body; | |
11227 | char *name = copy_string (body, name_len); | |
11228 | const char *replacement; | |
11229 | ||
11230 | if (*p == ' ') | |
11231 | replacement = body + name_len + 1; | |
11232 | else | |
11233 | { | |
4d3c2250 | 11234 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11235 | replacement = body + name_len; |
11236 | } | |
11237 | ||
11238 | macro_define_object (file, line, name, replacement); | |
11239 | ||
11240 | xfree (name); | |
11241 | } | |
11242 | else if (*p == '(') | |
11243 | { | |
11244 | /* It's a function-like macro. */ | |
11245 | char *name = copy_string (body, p - body); | |
11246 | int argc = 0; | |
11247 | int argv_size = 1; | |
11248 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
11249 | ||
11250 | p++; | |
11251 | ||
11252 | p = consume_improper_spaces (p, body); | |
11253 | ||
11254 | /* Parse the formal argument list. */ | |
11255 | while (*p && *p != ')') | |
11256 | { | |
11257 | /* Find the extent of the current argument name. */ | |
11258 | const char *arg_start = p; | |
11259 | ||
11260 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
11261 | p++; | |
11262 | ||
11263 | if (! *p || p == arg_start) | |
4d3c2250 | 11264 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11265 | else |
11266 | { | |
11267 | /* Make sure argv has room for the new argument. */ | |
11268 | if (argc >= argv_size) | |
11269 | { | |
11270 | argv_size *= 2; | |
11271 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
11272 | } | |
11273 | ||
11274 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
11275 | } | |
11276 | ||
11277 | p = consume_improper_spaces (p, body); | |
11278 | ||
11279 | /* Consume the comma, if present. */ | |
11280 | if (*p == ',') | |
11281 | { | |
11282 | p++; | |
11283 | ||
11284 | p = consume_improper_spaces (p, body); | |
11285 | } | |
11286 | } | |
11287 | ||
11288 | if (*p == ')') | |
11289 | { | |
11290 | p++; | |
11291 | ||
11292 | if (*p == ' ') | |
11293 | /* Perfectly formed definition, no complaints. */ | |
11294 | macro_define_function (file, line, name, | |
11295 | argc, (const char **) argv, | |
11296 | p + 1); | |
11297 | else if (*p == '\0') | |
11298 | { | |
11299 | /* Complain, but do define it. */ | |
4d3c2250 | 11300 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11301 | macro_define_function (file, line, name, |
11302 | argc, (const char **) argv, | |
11303 | p); | |
11304 | } | |
11305 | else | |
11306 | /* Just complain. */ | |
4d3c2250 | 11307 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11308 | } |
11309 | else | |
11310 | /* Just complain. */ | |
4d3c2250 | 11311 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11312 | |
11313 | xfree (name); | |
11314 | { | |
11315 | int i; | |
11316 | ||
11317 | for (i = 0; i < argc; i++) | |
11318 | xfree (argv[i]); | |
11319 | } | |
11320 | xfree (argv); | |
11321 | } | |
11322 | else | |
4d3c2250 | 11323 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
11324 | } |
11325 | ||
11326 | ||
11327 | static void | |
11328 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
11329 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 11330 | struct dwarf2_cu *cu) |
2e276125 | 11331 | { |
fe1b8b76 | 11332 | gdb_byte *mac_ptr, *mac_end; |
2e276125 | 11333 | struct macro_source_file *current_file = 0; |
757a13d0 JK |
11334 | enum dwarf_macinfo_record_type macinfo_type; |
11335 | int at_commandline; | |
2e276125 | 11336 | |
be391dca TT |
11337 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
11338 | &dwarf2_per_objfile->macinfo); | |
dce234bc | 11339 | if (dwarf2_per_objfile->macinfo.buffer == NULL) |
2e276125 | 11340 | { |
e2e0b3e5 | 11341 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
11342 | return; |
11343 | } | |
11344 | ||
757a13d0 JK |
11345 | /* First pass: Find the name of the base filename. |
11346 | This filename is needed in order to process all macros whose definition | |
11347 | (or undefinition) comes from the command line. These macros are defined | |
11348 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
11349 | associated to the base file. | |
11350 | ||
11351 | To determine the base file name, we scan the macro definitions until we | |
11352 | reach the first DW_MACINFO_start_file entry. We then initialize | |
11353 | CURRENT_FILE accordingly so that any macro definition found before the | |
11354 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
11355 | ||
dce234bc PP |
11356 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
11357 | mac_end = dwarf2_per_objfile->macinfo.buffer | |
11358 | + dwarf2_per_objfile->macinfo.size; | |
2e276125 | 11359 | |
757a13d0 | 11360 | do |
2e276125 | 11361 | { |
2e276125 JB |
11362 | /* Do we at least have room for a macinfo type byte? */ |
11363 | if (mac_ptr >= mac_end) | |
11364 | { | |
757a13d0 JK |
11365 | /* Complaint is printed during the second pass as GDB will probably |
11366 | stop the first pass earlier upon finding DW_MACINFO_start_file. */ | |
11367 | break; | |
2e276125 JB |
11368 | } |
11369 | ||
11370 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
11371 | mac_ptr++; | |
11372 | ||
11373 | switch (macinfo_type) | |
11374 | { | |
11375 | /* A zero macinfo type indicates the end of the macro | |
11376 | information. */ | |
11377 | case 0: | |
757a13d0 JK |
11378 | break; |
11379 | ||
11380 | case DW_MACINFO_define: | |
11381 | case DW_MACINFO_undef: | |
11382 | /* Only skip the data by MAC_PTR. */ | |
11383 | { | |
11384 | unsigned int bytes_read; | |
11385 | ||
11386 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11387 | mac_ptr += bytes_read; | |
11388 | read_string (abfd, mac_ptr, &bytes_read); | |
11389 | mac_ptr += bytes_read; | |
11390 | } | |
11391 | break; | |
11392 | ||
11393 | case DW_MACINFO_start_file: | |
11394 | { | |
11395 | unsigned int bytes_read; | |
11396 | int line, file; | |
11397 | ||
11398 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11399 | mac_ptr += bytes_read; | |
11400 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11401 | mac_ptr += bytes_read; | |
11402 | ||
11403 | current_file = macro_start_file (file, line, current_file, comp_dir, | |
11404 | lh, cu->objfile); | |
11405 | } | |
11406 | break; | |
11407 | ||
11408 | case DW_MACINFO_end_file: | |
11409 | /* No data to skip by MAC_PTR. */ | |
11410 | break; | |
11411 | ||
11412 | case DW_MACINFO_vendor_ext: | |
11413 | /* Only skip the data by MAC_PTR. */ | |
11414 | { | |
11415 | unsigned int bytes_read; | |
11416 | ||
11417 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11418 | mac_ptr += bytes_read; | |
11419 | read_string (abfd, mac_ptr, &bytes_read); | |
11420 | mac_ptr += bytes_read; | |
11421 | } | |
11422 | break; | |
11423 | ||
11424 | default: | |
11425 | break; | |
11426 | } | |
11427 | } while (macinfo_type != 0 && current_file == NULL); | |
11428 | ||
11429 | /* Second pass: Process all entries. | |
11430 | ||
11431 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
11432 | command-line macro definitions/undefinitions. This flag is unset when we | |
11433 | reach the first DW_MACINFO_start_file entry. */ | |
11434 | ||
dce234bc | 11435 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
757a13d0 JK |
11436 | |
11437 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
11438 | GDB is still reading the definitions from command line. First | |
11439 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
11440 | to create CURRENT_FILE for the main source holding also the command line | |
11441 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
11442 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
11443 | ||
11444 | at_commandline = 1; | |
11445 | ||
11446 | do | |
11447 | { | |
11448 | /* Do we at least have room for a macinfo type byte? */ | |
11449 | if (mac_ptr >= mac_end) | |
11450 | { | |
11451 | dwarf2_macros_too_long_complaint (); | |
11452 | break; | |
11453 | } | |
11454 | ||
11455 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
11456 | mac_ptr++; | |
11457 | ||
11458 | switch (macinfo_type) | |
11459 | { | |
11460 | /* A zero macinfo type indicates the end of the macro | |
11461 | information. */ | |
11462 | case 0: | |
11463 | break; | |
2e276125 JB |
11464 | |
11465 | case DW_MACINFO_define: | |
11466 | case DW_MACINFO_undef: | |
11467 | { | |
891d2f0b | 11468 | unsigned int bytes_read; |
2e276125 JB |
11469 | int line; |
11470 | char *body; | |
11471 | ||
11472 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11473 | mac_ptr += bytes_read; | |
11474 | body = read_string (abfd, mac_ptr, &bytes_read); | |
11475 | mac_ptr += bytes_read; | |
11476 | ||
11477 | if (! current_file) | |
757a13d0 JK |
11478 | { |
11479 | /* DWARF violation as no main source is present. */ | |
11480 | complaint (&symfile_complaints, | |
11481 | _("debug info with no main source gives macro %s " | |
11482 | "on line %d: %s"), | |
905e0470 PM |
11483 | macinfo_type == DW_MACINFO_define ? |
11484 | _("definition") : | |
11485 | macinfo_type == DW_MACINFO_undef ? | |
11486 | _("undefinition") : | |
11487 | _("something-or-other"), line, body); | |
757a13d0 JK |
11488 | break; |
11489 | } | |
11490 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) | |
4d3c2250 | 11491 | complaint (&symfile_complaints, |
757a13d0 JK |
11492 | _("debug info gives %s macro %s with %s line %d: %s"), |
11493 | at_commandline ? _("command-line") : _("in-file"), | |
905e0470 PM |
11494 | macinfo_type == DW_MACINFO_define ? |
11495 | _("definition") : | |
11496 | macinfo_type == DW_MACINFO_undef ? | |
11497 | _("undefinition") : | |
11498 | _("something-or-other"), | |
757a13d0 JK |
11499 | line == 0 ? _("zero") : _("non-zero"), line, body); |
11500 | ||
11501 | if (macinfo_type == DW_MACINFO_define) | |
11502 | parse_macro_definition (current_file, line, body); | |
11503 | else if (macinfo_type == DW_MACINFO_undef) | |
11504 | macro_undef (current_file, line, body); | |
2e276125 JB |
11505 | } |
11506 | break; | |
11507 | ||
11508 | case DW_MACINFO_start_file: | |
11509 | { | |
891d2f0b | 11510 | unsigned int bytes_read; |
2e276125 JB |
11511 | int line, file; |
11512 | ||
11513 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11514 | mac_ptr += bytes_read; | |
11515 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11516 | mac_ptr += bytes_read; | |
11517 | ||
757a13d0 JK |
11518 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) |
11519 | complaint (&symfile_complaints, | |
11520 | _("debug info gives source %d included " | |
11521 | "from %s at %s line %d"), | |
11522 | file, at_commandline ? _("command-line") : _("file"), | |
11523 | line == 0 ? _("zero") : _("non-zero"), line); | |
11524 | ||
11525 | if (at_commandline) | |
11526 | { | |
11527 | /* This DW_MACINFO_start_file was executed in the pass one. */ | |
11528 | at_commandline = 0; | |
11529 | } | |
11530 | else | |
11531 | current_file = macro_start_file (file, line, | |
11532 | current_file, comp_dir, | |
11533 | lh, cu->objfile); | |
2e276125 JB |
11534 | } |
11535 | break; | |
11536 | ||
11537 | case DW_MACINFO_end_file: | |
11538 | if (! current_file) | |
4d3c2250 | 11539 | complaint (&symfile_complaints, |
e2e0b3e5 | 11540 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
11541 | else |
11542 | { | |
11543 | current_file = current_file->included_by; | |
11544 | if (! current_file) | |
11545 | { | |
11546 | enum dwarf_macinfo_record_type next_type; | |
11547 | ||
11548 | /* GCC circa March 2002 doesn't produce the zero | |
11549 | type byte marking the end of the compilation | |
11550 | unit. Complain if it's not there, but exit no | |
11551 | matter what. */ | |
11552 | ||
11553 | /* Do we at least have room for a macinfo type byte? */ | |
11554 | if (mac_ptr >= mac_end) | |
11555 | { | |
4d3c2250 | 11556 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
11557 | return; |
11558 | } | |
11559 | ||
11560 | /* We don't increment mac_ptr here, so this is just | |
11561 | a look-ahead. */ | |
11562 | next_type = read_1_byte (abfd, mac_ptr); | |
11563 | if (next_type != 0) | |
4d3c2250 | 11564 | complaint (&symfile_complaints, |
e2e0b3e5 | 11565 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
11566 | |
11567 | return; | |
11568 | } | |
11569 | } | |
11570 | break; | |
11571 | ||
11572 | case DW_MACINFO_vendor_ext: | |
11573 | { | |
891d2f0b | 11574 | unsigned int bytes_read; |
2e276125 JB |
11575 | int constant; |
11576 | char *string; | |
11577 | ||
11578 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
11579 | mac_ptr += bytes_read; | |
11580 | string = read_string (abfd, mac_ptr, &bytes_read); | |
11581 | mac_ptr += bytes_read; | |
11582 | ||
11583 | /* We don't recognize any vendor extensions. */ | |
11584 | } | |
11585 | break; | |
11586 | } | |
757a13d0 | 11587 | } while (macinfo_type != 0); |
2e276125 | 11588 | } |
8e19ed76 PS |
11589 | |
11590 | /* Check if the attribute's form is a DW_FORM_block* | |
11591 | if so return true else false. */ | |
11592 | static int | |
11593 | attr_form_is_block (struct attribute *attr) | |
11594 | { | |
11595 | return (attr == NULL ? 0 : | |
11596 | attr->form == DW_FORM_block1 | |
11597 | || attr->form == DW_FORM_block2 | |
11598 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
11599 | || attr->form == DW_FORM_block |
11600 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 11601 | } |
4c2df51b | 11602 | |
c6a0999f JB |
11603 | /* Return non-zero if ATTR's value is a section offset --- classes |
11604 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
11605 | You may use DW_UNSND (attr) to retrieve such offsets. | |
11606 | ||
11607 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
11608 | may have a value that belongs to more than one of these classes; it | |
11609 | would be ambiguous if we did, because we use the same forms for all | |
11610 | of them. */ | |
3690dd37 JB |
11611 | static int |
11612 | attr_form_is_section_offset (struct attribute *attr) | |
11613 | { | |
11614 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
11615 | || attr->form == DW_FORM_data8 |
11616 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
11617 | } |
11618 | ||
11619 | ||
11620 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
11621 | zero otherwise. When this function returns true, you can apply | |
11622 | dwarf2_get_attr_constant_value to it. | |
11623 | ||
11624 | However, note that for some attributes you must check | |
11625 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
11626 | and DW_FORM_data8 are members of both the constant class, and of | |
11627 | the classes that contain offsets into other debug sections | |
11628 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
11629 | that, if an attribute's can be either a constant or one of the | |
11630 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
11631 | taken as section offsets, not constants. */ | |
11632 | static int | |
11633 | attr_form_is_constant (struct attribute *attr) | |
11634 | { | |
11635 | switch (attr->form) | |
11636 | { | |
11637 | case DW_FORM_sdata: | |
11638 | case DW_FORM_udata: | |
11639 | case DW_FORM_data1: | |
11640 | case DW_FORM_data2: | |
11641 | case DW_FORM_data4: | |
11642 | case DW_FORM_data8: | |
11643 | return 1; | |
11644 | default: | |
11645 | return 0; | |
11646 | } | |
11647 | } | |
11648 | ||
4c2df51b DJ |
11649 | static void |
11650 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 11651 | struct dwarf2_cu *cu) |
4c2df51b | 11652 | { |
3690dd37 | 11653 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
11654 | /* ".debug_loc" may not exist at all, or the offset may be outside |
11655 | the section. If so, fall through to the complaint in the | |
11656 | other branch. */ | |
dce234bc | 11657 | && DW_UNSND (attr) < dwarf2_per_objfile->loc.size) |
4c2df51b | 11658 | { |
0d53c4c4 | 11659 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 11660 | |
4a146b47 | 11661 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 11662 | sizeof (struct dwarf2_loclist_baton)); |
ae0d2f24 UW |
11663 | baton->per_cu = cu->per_cu; |
11664 | gdb_assert (baton->per_cu); | |
4c2df51b | 11665 | |
be391dca TT |
11666 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
11667 | &dwarf2_per_objfile->loc); | |
11668 | ||
0d53c4c4 DJ |
11669 | /* We don't know how long the location list is, but make sure we |
11670 | don't run off the edge of the section. */ | |
dce234bc PP |
11671 | baton->size = dwarf2_per_objfile->loc.size - DW_UNSND (attr); |
11672 | baton->data = dwarf2_per_objfile->loc.buffer + DW_UNSND (attr); | |
d00adf39 DE |
11673 | baton->base_address = cu->base_address; |
11674 | if (cu->base_known == 0) | |
0d53c4c4 | 11675 | complaint (&symfile_complaints, |
e2e0b3e5 | 11676 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 11677 | |
768a979c | 11678 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
11679 | SYMBOL_LOCATION_BATON (sym) = baton; |
11680 | } | |
11681 | else | |
11682 | { | |
11683 | struct dwarf2_locexpr_baton *baton; | |
11684 | ||
4a146b47 | 11685 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 11686 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
11687 | baton->per_cu = cu->per_cu; |
11688 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
11689 | |
11690 | if (attr_form_is_block (attr)) | |
11691 | { | |
11692 | /* Note that we're just copying the block's data pointer | |
11693 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
11694 | info_buffer for SYM's objfile; right now we never release |
11695 | that buffer, but when we do clean up properly this may | |
11696 | need to change. */ | |
0d53c4c4 DJ |
11697 | baton->size = DW_BLOCK (attr)->size; |
11698 | baton->data = DW_BLOCK (attr)->data; | |
11699 | } | |
11700 | else | |
11701 | { | |
11702 | dwarf2_invalid_attrib_class_complaint ("location description", | |
11703 | SYMBOL_NATURAL_NAME (sym)); | |
11704 | baton->size = 0; | |
11705 | baton->data = NULL; | |
11706 | } | |
11707 | ||
768a979c | 11708 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
11709 | SYMBOL_LOCATION_BATON (sym) = baton; |
11710 | } | |
4c2df51b | 11711 | } |
6502dd73 | 11712 | |
ae0d2f24 UW |
11713 | /* Return the OBJFILE associated with the compilation unit CU. */ |
11714 | ||
11715 | struct objfile * | |
11716 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
11717 | { | |
11718 | struct objfile *objfile = per_cu->psymtab->objfile; | |
11719 | ||
11720 | /* Return the master objfile, so that we can report and look up the | |
11721 | correct file containing this variable. */ | |
11722 | if (objfile->separate_debug_objfile_backlink) | |
11723 | objfile = objfile->separate_debug_objfile_backlink; | |
11724 | ||
11725 | return objfile; | |
11726 | } | |
11727 | ||
11728 | /* Return the address size given in the compilation unit header for CU. */ | |
11729 | ||
11730 | CORE_ADDR | |
11731 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
11732 | { | |
11733 | if (per_cu->cu) | |
11734 | return per_cu->cu->header.addr_size; | |
11735 | else | |
11736 | { | |
11737 | /* If the CU is not currently read in, we re-read its header. */ | |
11738 | struct objfile *objfile = per_cu->psymtab->objfile; | |
11739 | struct dwarf2_per_objfile *per_objfile | |
11740 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
dce234bc | 11741 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; |
ae0d2f24 | 11742 | struct comp_unit_head cu_header; |
9a619af0 | 11743 | |
ae0d2f24 UW |
11744 | memset (&cu_header, 0, sizeof cu_header); |
11745 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
11746 | return cu_header.addr_size; | |
11747 | } | |
11748 | } | |
11749 | ||
348e048f DE |
11750 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
11751 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
11752 | |
11753 | static struct dwarf2_per_cu_data * | |
c764a876 | 11754 | dwarf2_find_containing_comp_unit (unsigned int offset, |
ae038cb0 DJ |
11755 | struct objfile *objfile) |
11756 | { | |
11757 | struct dwarf2_per_cu_data *this_cu; | |
11758 | int low, high; | |
11759 | ||
ae038cb0 DJ |
11760 | low = 0; |
11761 | high = dwarf2_per_objfile->n_comp_units - 1; | |
11762 | while (high > low) | |
11763 | { | |
11764 | int mid = low + (high - low) / 2; | |
9a619af0 | 11765 | |
ae038cb0 DJ |
11766 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) |
11767 | high = mid; | |
11768 | else | |
11769 | low = mid + 1; | |
11770 | } | |
11771 | gdb_assert (low == high); | |
11772 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
11773 | { | |
10b3939b | 11774 | if (low == 0) |
8a3fe4f8 AC |
11775 | error (_("Dwarf Error: could not find partial DIE containing " |
11776 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
11777 | (long) offset, bfd_get_filename (objfile->obfd)); |
11778 | ||
ae038cb0 DJ |
11779 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
11780 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
11781 | } | |
11782 | else | |
11783 | { | |
11784 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
11785 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
11786 | && offset >= this_cu->offset + this_cu->length) | |
c764a876 | 11787 | error (_("invalid dwarf2 offset %u"), offset); |
ae038cb0 DJ |
11788 | gdb_assert (offset < this_cu->offset + this_cu->length); |
11789 | return this_cu; | |
11790 | } | |
11791 | } | |
11792 | ||
10b3939b DJ |
11793 | /* Locate the compilation unit from OBJFILE which is located at exactly |
11794 | OFFSET. Raises an error on failure. */ | |
11795 | ||
ae038cb0 | 11796 | static struct dwarf2_per_cu_data * |
c764a876 | 11797 | dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile) |
ae038cb0 DJ |
11798 | { |
11799 | struct dwarf2_per_cu_data *this_cu; | |
9a619af0 | 11800 | |
ae038cb0 DJ |
11801 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); |
11802 | if (this_cu->offset != offset) | |
c764a876 | 11803 | error (_("no compilation unit with offset %u."), offset); |
ae038cb0 DJ |
11804 | return this_cu; |
11805 | } | |
11806 | ||
93311388 DE |
11807 | /* Malloc space for a dwarf2_cu for OBJFILE and initialize it. */ |
11808 | ||
11809 | static struct dwarf2_cu * | |
11810 | alloc_one_comp_unit (struct objfile *objfile) | |
11811 | { | |
11812 | struct dwarf2_cu *cu = xcalloc (1, sizeof (struct dwarf2_cu)); | |
11813 | cu->objfile = objfile; | |
11814 | obstack_init (&cu->comp_unit_obstack); | |
11815 | return cu; | |
11816 | } | |
11817 | ||
ae038cb0 DJ |
11818 | /* Release one cached compilation unit, CU. We unlink it from the tree |
11819 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
11820 | the caller is responsible for that. |
11821 | NOTE: DATA is a void * because this function is also used as a | |
11822 | cleanup routine. */ | |
ae038cb0 DJ |
11823 | |
11824 | static void | |
11825 | free_one_comp_unit (void *data) | |
11826 | { | |
11827 | struct dwarf2_cu *cu = data; | |
11828 | ||
11829 | if (cu->per_cu != NULL) | |
11830 | cu->per_cu->cu = NULL; | |
11831 | cu->per_cu = NULL; | |
11832 | ||
11833 | obstack_free (&cu->comp_unit_obstack, NULL); | |
11834 | ||
11835 | xfree (cu); | |
11836 | } | |
11837 | ||
72bf9492 | 11838 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
11839 | when we're finished with it. We can't free the pointer itself, but be |
11840 | sure to unlink it from the cache. Also release any associated storage | |
11841 | and perform cache maintenance. | |
72bf9492 DJ |
11842 | |
11843 | Only used during partial symbol parsing. */ | |
11844 | ||
11845 | static void | |
11846 | free_stack_comp_unit (void *data) | |
11847 | { | |
11848 | struct dwarf2_cu *cu = data; | |
11849 | ||
11850 | obstack_free (&cu->comp_unit_obstack, NULL); | |
11851 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
11852 | |
11853 | if (cu->per_cu != NULL) | |
11854 | { | |
11855 | /* This compilation unit is on the stack in our caller, so we | |
11856 | should not xfree it. Just unlink it. */ | |
11857 | cu->per_cu->cu = NULL; | |
11858 | cu->per_cu = NULL; | |
11859 | ||
11860 | /* If we had a per-cu pointer, then we may have other compilation | |
11861 | units loaded, so age them now. */ | |
11862 | age_cached_comp_units (); | |
11863 | } | |
11864 | } | |
11865 | ||
11866 | /* Free all cached compilation units. */ | |
11867 | ||
11868 | static void | |
11869 | free_cached_comp_units (void *data) | |
11870 | { | |
11871 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
11872 | ||
11873 | per_cu = dwarf2_per_objfile->read_in_chain; | |
11874 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
11875 | while (per_cu != NULL) | |
11876 | { | |
11877 | struct dwarf2_per_cu_data *next_cu; | |
11878 | ||
11879 | next_cu = per_cu->cu->read_in_chain; | |
11880 | ||
11881 | free_one_comp_unit (per_cu->cu); | |
11882 | *last_chain = next_cu; | |
11883 | ||
11884 | per_cu = next_cu; | |
11885 | } | |
11886 | } | |
11887 | ||
11888 | /* Increase the age counter on each cached compilation unit, and free | |
11889 | any that are too old. */ | |
11890 | ||
11891 | static void | |
11892 | age_cached_comp_units (void) | |
11893 | { | |
11894 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
11895 | ||
11896 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
11897 | per_cu = dwarf2_per_objfile->read_in_chain; | |
11898 | while (per_cu != NULL) | |
11899 | { | |
11900 | per_cu->cu->last_used ++; | |
11901 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
11902 | dwarf2_mark (per_cu->cu); | |
11903 | per_cu = per_cu->cu->read_in_chain; | |
11904 | } | |
11905 | ||
11906 | per_cu = dwarf2_per_objfile->read_in_chain; | |
11907 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
11908 | while (per_cu != NULL) | |
11909 | { | |
11910 | struct dwarf2_per_cu_data *next_cu; | |
11911 | ||
11912 | next_cu = per_cu->cu->read_in_chain; | |
11913 | ||
11914 | if (!per_cu->cu->mark) | |
11915 | { | |
11916 | free_one_comp_unit (per_cu->cu); | |
11917 | *last_chain = next_cu; | |
11918 | } | |
11919 | else | |
11920 | last_chain = &per_cu->cu->read_in_chain; | |
11921 | ||
11922 | per_cu = next_cu; | |
11923 | } | |
11924 | } | |
11925 | ||
11926 | /* Remove a single compilation unit from the cache. */ | |
11927 | ||
11928 | static void | |
11929 | free_one_cached_comp_unit (void *target_cu) | |
11930 | { | |
11931 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
11932 | ||
11933 | per_cu = dwarf2_per_objfile->read_in_chain; | |
11934 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
11935 | while (per_cu != NULL) | |
11936 | { | |
11937 | struct dwarf2_per_cu_data *next_cu; | |
11938 | ||
11939 | next_cu = per_cu->cu->read_in_chain; | |
11940 | ||
11941 | if (per_cu->cu == target_cu) | |
11942 | { | |
11943 | free_one_comp_unit (per_cu->cu); | |
11944 | *last_chain = next_cu; | |
11945 | break; | |
11946 | } | |
11947 | else | |
11948 | last_chain = &per_cu->cu->read_in_chain; | |
11949 | ||
11950 | per_cu = next_cu; | |
11951 | } | |
11952 | } | |
11953 | ||
fe3e1990 DJ |
11954 | /* Release all extra memory associated with OBJFILE. */ |
11955 | ||
11956 | void | |
11957 | dwarf2_free_objfile (struct objfile *objfile) | |
11958 | { | |
11959 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
11960 | ||
11961 | if (dwarf2_per_objfile == NULL) | |
11962 | return; | |
11963 | ||
11964 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
11965 | free_cached_comp_units (NULL); | |
11966 | ||
11967 | /* Everything else should be on the objfile obstack. */ | |
11968 | } | |
11969 | ||
1c379e20 DJ |
11970 | /* A pair of DIE offset and GDB type pointer. We store these |
11971 | in a hash table separate from the DIEs, and preserve them | |
11972 | when the DIEs are flushed out of cache. */ | |
11973 | ||
11974 | struct dwarf2_offset_and_type | |
11975 | { | |
11976 | unsigned int offset; | |
11977 | struct type *type; | |
11978 | }; | |
11979 | ||
11980 | /* Hash function for a dwarf2_offset_and_type. */ | |
11981 | ||
11982 | static hashval_t | |
11983 | offset_and_type_hash (const void *item) | |
11984 | { | |
11985 | const struct dwarf2_offset_and_type *ofs = item; | |
9a619af0 | 11986 | |
1c379e20 DJ |
11987 | return ofs->offset; |
11988 | } | |
11989 | ||
11990 | /* Equality function for a dwarf2_offset_and_type. */ | |
11991 | ||
11992 | static int | |
11993 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
11994 | { | |
11995 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
11996 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 11997 | |
1c379e20 DJ |
11998 | return ofs_lhs->offset == ofs_rhs->offset; |
11999 | } | |
12000 | ||
12001 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
f792889a | 12002 | table if necessary. For convenience, return TYPE. */ |
1c379e20 | 12003 | |
f792889a | 12004 | static struct type * |
1c379e20 DJ |
12005 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
12006 | { | |
12007 | struct dwarf2_offset_and_type **slot, ofs; | |
12008 | ||
b4ba55a1 JB |
12009 | /* For Ada types, make sure that the gnat-specific data is always |
12010 | initialized (if not already set). There are a few types where | |
12011 | we should not be doing so, because the type-specific area is | |
12012 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
12013 | where the type-specific area is used to store the floatformat). | |
12014 | But this is not a problem, because the gnat-specific information | |
12015 | is actually not needed for these types. */ | |
12016 | if (need_gnat_info (cu) | |
12017 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
12018 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
12019 | && !HAVE_GNAT_AUX_INFO (type)) | |
12020 | INIT_GNAT_SPECIFIC (type); | |
12021 | ||
f792889a DJ |
12022 | if (cu->type_hash == NULL) |
12023 | { | |
12024 | gdb_assert (cu->per_cu != NULL); | |
12025 | cu->per_cu->type_hash | |
12026 | = htab_create_alloc_ex (cu->header.length / 24, | |
12027 | offset_and_type_hash, | |
12028 | offset_and_type_eq, | |
12029 | NULL, | |
12030 | &cu->objfile->objfile_obstack, | |
12031 | hashtab_obstack_allocate, | |
12032 | dummy_obstack_deallocate); | |
12033 | cu->type_hash = cu->per_cu->type_hash; | |
12034 | } | |
1c379e20 DJ |
12035 | |
12036 | ofs.offset = die->offset; | |
12037 | ofs.type = type; | |
12038 | slot = (struct dwarf2_offset_and_type **) | |
f792889a | 12039 | htab_find_slot_with_hash (cu->type_hash, &ofs, ofs.offset, INSERT); |
1c379e20 DJ |
12040 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); |
12041 | **slot = ofs; | |
f792889a | 12042 | return type; |
1c379e20 DJ |
12043 | } |
12044 | ||
f792889a DJ |
12045 | /* Find the type for DIE in CU's type_hash, or return NULL if DIE does |
12046 | not have a saved type. */ | |
1c379e20 DJ |
12047 | |
12048 | static struct type * | |
f792889a | 12049 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) |
1c379e20 DJ |
12050 | { |
12051 | struct dwarf2_offset_and_type *slot, ofs; | |
f792889a DJ |
12052 | htab_t type_hash = cu->type_hash; |
12053 | ||
12054 | if (type_hash == NULL) | |
12055 | return NULL; | |
1c379e20 DJ |
12056 | |
12057 | ofs.offset = die->offset; | |
12058 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
12059 | if (slot) | |
12060 | return slot->type; | |
12061 | else | |
12062 | return NULL; | |
12063 | } | |
12064 | ||
10b3939b DJ |
12065 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
12066 | ||
12067 | static void | |
12068 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
12069 | struct dwarf2_per_cu_data *ref_per_cu) | |
12070 | { | |
12071 | void **slot; | |
12072 | ||
12073 | if (cu->dependencies == NULL) | |
12074 | cu->dependencies | |
12075 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
12076 | NULL, &cu->comp_unit_obstack, | |
12077 | hashtab_obstack_allocate, | |
12078 | dummy_obstack_deallocate); | |
12079 | ||
12080 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
12081 | if (*slot == NULL) | |
12082 | *slot = ref_per_cu; | |
12083 | } | |
1c379e20 | 12084 | |
f504f079 DE |
12085 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
12086 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
12087 | cache that we must keep because we are keeping CU. */ |
12088 | ||
10b3939b DJ |
12089 | static int |
12090 | dwarf2_mark_helper (void **slot, void *data) | |
12091 | { | |
12092 | struct dwarf2_per_cu_data *per_cu; | |
12093 | ||
12094 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
12095 | if (per_cu->cu->mark) | |
12096 | return 1; | |
12097 | per_cu->cu->mark = 1; | |
12098 | ||
12099 | if (per_cu->cu->dependencies != NULL) | |
12100 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
12101 | ||
12102 | return 1; | |
12103 | } | |
12104 | ||
f504f079 DE |
12105 | /* Set the mark field in CU and in every other compilation unit in the |
12106 | cache that we must keep because we are keeping CU. */ | |
12107 | ||
ae038cb0 DJ |
12108 | static void |
12109 | dwarf2_mark (struct dwarf2_cu *cu) | |
12110 | { | |
12111 | if (cu->mark) | |
12112 | return; | |
12113 | cu->mark = 1; | |
10b3939b DJ |
12114 | if (cu->dependencies != NULL) |
12115 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
12116 | } |
12117 | ||
12118 | static void | |
12119 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
12120 | { | |
12121 | while (per_cu) | |
12122 | { | |
12123 | per_cu->cu->mark = 0; | |
12124 | per_cu = per_cu->cu->read_in_chain; | |
12125 | } | |
72bf9492 DJ |
12126 | } |
12127 | ||
72bf9492 DJ |
12128 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
12129 | is its offset in .debug_info for this objfile. */ | |
12130 | ||
12131 | static hashval_t | |
12132 | partial_die_hash (const void *item) | |
12133 | { | |
12134 | const struct partial_die_info *part_die = item; | |
9a619af0 | 12135 | |
72bf9492 DJ |
12136 | return part_die->offset; |
12137 | } | |
12138 | ||
12139 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
12140 | are equal if they have the same offset. */ | |
12141 | ||
12142 | static int | |
12143 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
12144 | { | |
12145 | const struct partial_die_info *part_die_lhs = item_lhs; | |
12146 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 12147 | |
72bf9492 DJ |
12148 | return part_die_lhs->offset == part_die_rhs->offset; |
12149 | } | |
12150 | ||
ae038cb0 DJ |
12151 | static struct cmd_list_element *set_dwarf2_cmdlist; |
12152 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
12153 | ||
12154 | static void | |
12155 | set_dwarf2_cmd (char *args, int from_tty) | |
12156 | { | |
12157 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
12158 | } | |
12159 | ||
12160 | static void | |
12161 | show_dwarf2_cmd (char *args, int from_tty) | |
12162 | { | |
12163 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
12164 | } | |
12165 | ||
dce234bc PP |
12166 | /* If section described by INFO was mmapped, munmap it now. */ |
12167 | ||
12168 | static void | |
12169 | munmap_section_buffer (struct dwarf2_section_info *info) | |
12170 | { | |
12171 | if (info->was_mmapped) | |
12172 | { | |
12173 | #ifdef HAVE_MMAP | |
12174 | intptr_t begin = (intptr_t) info->buffer; | |
12175 | intptr_t map_begin = begin & ~(pagesize - 1); | |
12176 | size_t map_length = info->size + begin - map_begin; | |
9a619af0 | 12177 | |
dce234bc PP |
12178 | gdb_assert (munmap ((void *) map_begin, map_length) == 0); |
12179 | #else | |
12180 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
12181 | gdb_assert (0); | |
12182 | #endif | |
12183 | } | |
12184 | } | |
12185 | ||
12186 | /* munmap debug sections for OBJFILE, if necessary. */ | |
12187 | ||
12188 | static void | |
c1bd65d0 | 12189 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
12190 | { |
12191 | struct dwarf2_per_objfile *data = d; | |
9a619af0 | 12192 | |
dce234bc PP |
12193 | munmap_section_buffer (&data->info); |
12194 | munmap_section_buffer (&data->abbrev); | |
12195 | munmap_section_buffer (&data->line); | |
12196 | munmap_section_buffer (&data->str); | |
12197 | munmap_section_buffer (&data->macinfo); | |
12198 | munmap_section_buffer (&data->ranges); | |
12199 | munmap_section_buffer (&data->loc); | |
12200 | munmap_section_buffer (&data->frame); | |
12201 | munmap_section_buffer (&data->eh_frame); | |
12202 | } | |
12203 | ||
6502dd73 DJ |
12204 | void _initialize_dwarf2_read (void); |
12205 | ||
12206 | void | |
12207 | _initialize_dwarf2_read (void) | |
12208 | { | |
dce234bc | 12209 | dwarf2_objfile_data_key |
c1bd65d0 | 12210 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 12211 | |
1bedd215 AC |
12212 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
12213 | Set DWARF 2 specific variables.\n\ | |
12214 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
12215 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
12216 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
12217 | ||
1bedd215 AC |
12218 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
12219 | Show DWARF 2 specific variables\n\ | |
12220 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
12221 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
12222 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
12223 | ||
12224 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
12225 | &dwarf2_max_cache_age, _("\ |
12226 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
12227 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
12228 | A higher limit means that cached compilation units will be stored\n\ | |
12229 | in memory longer, and more total memory will be used. Zero disables\n\ | |
12230 | caching, which can slow down startup."), | |
2c5b56ce | 12231 | NULL, |
920d2a44 | 12232 | show_dwarf2_max_cache_age, |
2c5b56ce | 12233 | &set_dwarf2_cmdlist, |
ae038cb0 | 12234 | &show_dwarf2_cmdlist); |
d97bc12b DE |
12235 | |
12236 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ | |
12237 | Set debugging of the dwarf2 DIE reader."), _("\ | |
12238 | Show debugging of the dwarf2 DIE reader."), _("\ | |
12239 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
12240 | The value is the maximum depth to print."), | |
12241 | NULL, | |
12242 | NULL, | |
12243 | &setdebuglist, &showdebuglist); | |
6502dd73 | 12244 | } |