Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
6aba47ca | 3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
4c38e0a4 | 4 | 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
0fb0cc75 | 5 | Free Software Foundation, Inc. |
c906108c SS |
6 | |
7 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
8 | Inc. with support from Florida State University (under contract | |
9 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
10 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
11 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 12 | support. |
c906108c | 13 | |
c5aa993b | 14 | This file is part of GDB. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is free software; you can redistribute it and/or modify |
17 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
18 | the Free Software Foundation; either version 3 of the License, or |
19 | (at your option) any later version. | |
c906108c | 20 | |
a9762ec7 JB |
21 | This program is distributed in the hope that it will be useful, |
22 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
24 | GNU General Public License for more details. | |
c906108c | 25 | |
c5aa993b | 26 | You should have received a copy of the GNU General Public License |
a9762ec7 | 27 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
28 | |
29 | #include "defs.h" | |
30 | #include "bfd.h" | |
c906108c SS |
31 | #include "symtab.h" |
32 | #include "gdbtypes.h" | |
c906108c | 33 | #include "objfiles.h" |
fa8f86ff | 34 | #include "dwarf2.h" |
c906108c SS |
35 | #include "buildsym.h" |
36 | #include "demangle.h" | |
37 | #include "expression.h" | |
d5166ae1 | 38 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 39 | #include "macrotab.h" |
c906108c SS |
40 | #include "language.h" |
41 | #include "complaints.h" | |
357e46e7 | 42 | #include "bcache.h" |
4c2df51b DJ |
43 | #include "dwarf2expr.h" |
44 | #include "dwarf2loc.h" | |
9219021c | 45 | #include "cp-support.h" |
72bf9492 | 46 | #include "hashtab.h" |
ae038cb0 DJ |
47 | #include "command.h" |
48 | #include "gdbcmd.h" | |
edb3359d | 49 | #include "block.h" |
ff013f42 | 50 | #include "addrmap.h" |
94af9270 KS |
51 | #include "typeprint.h" |
52 | #include "jv-lang.h" | |
ccefe4c4 | 53 | #include "psympriv.h" |
9291a0cd TT |
54 | #include "exceptions.h" |
55 | #include "gdb_stat.h" | |
4c2df51b | 56 | |
c906108c SS |
57 | #include <fcntl.h> |
58 | #include "gdb_string.h" | |
4bdf3d34 | 59 | #include "gdb_assert.h" |
c906108c | 60 | #include <sys/types.h> |
233a11ab CS |
61 | #ifdef HAVE_ZLIB_H |
62 | #include <zlib.h> | |
63 | #endif | |
dce234bc PP |
64 | #ifdef HAVE_MMAP |
65 | #include <sys/mman.h> | |
85d9bd0e TT |
66 | #ifndef MAP_FAILED |
67 | #define MAP_FAILED ((void *) -1) | |
68 | #endif | |
dce234bc | 69 | #endif |
d8151005 | 70 | |
107d2387 | 71 | #if 0 |
357e46e7 | 72 | /* .debug_info header for a compilation unit |
c906108c SS |
73 | Because of alignment constraints, this structure has padding and cannot |
74 | be mapped directly onto the beginning of the .debug_info section. */ | |
75 | typedef struct comp_unit_header | |
76 | { | |
77 | unsigned int length; /* length of the .debug_info | |
78 | contribution */ | |
79 | unsigned short version; /* version number -- 2 for DWARF | |
80 | version 2 */ | |
81 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
82 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
83 | } | |
84 | _COMP_UNIT_HEADER; | |
85 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 86 | #endif |
c906108c | 87 | |
c906108c SS |
88 | /* .debug_line statement program prologue |
89 | Because of alignment constraints, this structure has padding and cannot | |
90 | be mapped directly onto the beginning of the .debug_info section. */ | |
91 | typedef struct statement_prologue | |
92 | { | |
93 | unsigned int total_length; /* byte length of the statement | |
94 | information */ | |
95 | unsigned short version; /* version number -- 2 for DWARF | |
96 | version 2 */ | |
97 | unsigned int prologue_length; /* # bytes between prologue & | |
98 | stmt program */ | |
99 | unsigned char minimum_instruction_length; /* byte size of | |
100 | smallest instr */ | |
101 | unsigned char default_is_stmt; /* initial value of is_stmt | |
102 | register */ | |
103 | char line_base; | |
104 | unsigned char line_range; | |
105 | unsigned char opcode_base; /* number assigned to first special | |
106 | opcode */ | |
107 | unsigned char *standard_opcode_lengths; | |
108 | } | |
109 | _STATEMENT_PROLOGUE; | |
110 | ||
d97bc12b DE |
111 | /* When non-zero, dump DIEs after they are read in. */ |
112 | static int dwarf2_die_debug = 0; | |
113 | ||
dce234bc PP |
114 | static int pagesize; |
115 | ||
df8a16a1 DJ |
116 | /* When set, the file that we're processing is known to have debugging |
117 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
118 | but later versions do. */ | |
119 | ||
120 | static int processing_has_namespace_info; | |
121 | ||
6502dd73 DJ |
122 | static const struct objfile_data *dwarf2_objfile_data_key; |
123 | ||
dce234bc PP |
124 | struct dwarf2_section_info |
125 | { | |
126 | asection *asection; | |
127 | gdb_byte *buffer; | |
128 | bfd_size_type size; | |
129 | int was_mmapped; | |
be391dca TT |
130 | /* True if we have tried to read this section. */ |
131 | int readin; | |
dce234bc PP |
132 | }; |
133 | ||
9291a0cd TT |
134 | /* All offsets in the index are of this type. It must be |
135 | architecture-independent. */ | |
136 | typedef uint32_t offset_type; | |
137 | ||
138 | DEF_VEC_I (offset_type); | |
139 | ||
140 | /* A description of the mapped index. The file format is described in | |
141 | a comment by the code that writes the index. */ | |
142 | struct mapped_index | |
143 | { | |
144 | /* The total length of the buffer. */ | |
145 | off_t total_size; | |
146 | /* A pointer to the address table data. */ | |
147 | const gdb_byte *address_table; | |
148 | /* Size of the address table data in bytes. */ | |
149 | offset_type address_table_size; | |
150 | /* The hash table. */ | |
151 | const offset_type *index_table; | |
152 | /* Size in slots, each slot is 2 offset_types. */ | |
153 | offset_type index_table_slots; | |
154 | /* A pointer to the constant pool. */ | |
155 | const char *constant_pool; | |
156 | }; | |
157 | ||
158 | typedef struct dwarf2_per_cu_data *dwarf2_per_cu_data_ptr; | |
159 | DEF_VEC_P (dwarf2_per_cu_data_ptr); | |
160 | ||
6502dd73 DJ |
161 | struct dwarf2_per_objfile |
162 | { | |
dce234bc PP |
163 | struct dwarf2_section_info info; |
164 | struct dwarf2_section_info abbrev; | |
165 | struct dwarf2_section_info line; | |
dce234bc PP |
166 | struct dwarf2_section_info loc; |
167 | struct dwarf2_section_info macinfo; | |
168 | struct dwarf2_section_info str; | |
169 | struct dwarf2_section_info ranges; | |
348e048f | 170 | struct dwarf2_section_info types; |
dce234bc PP |
171 | struct dwarf2_section_info frame; |
172 | struct dwarf2_section_info eh_frame; | |
9291a0cd | 173 | struct dwarf2_section_info gdb_index; |
ae038cb0 | 174 | |
be391dca TT |
175 | /* Back link. */ |
176 | struct objfile *objfile; | |
177 | ||
10b3939b DJ |
178 | /* A list of all the compilation units. This is used to locate |
179 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
180 | struct dwarf2_per_cu_data **all_comp_units; |
181 | ||
182 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
183 | int n_comp_units; | |
184 | ||
185 | /* A chain of compilation units that are currently read in, so that | |
186 | they can be freed later. */ | |
187 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 | 188 | |
348e048f DE |
189 | /* A table mapping .debug_types signatures to its signatured_type entry. |
190 | This is NULL if the .debug_types section hasn't been read in yet. */ | |
191 | htab_t signatured_types; | |
192 | ||
72dca2f5 FR |
193 | /* A flag indicating wether this objfile has a section loaded at a |
194 | VMA of 0. */ | |
195 | int has_section_at_zero; | |
9291a0cd TT |
196 | |
197 | /* True if we are using the mapped index. */ | |
198 | unsigned char using_index; | |
199 | ||
200 | /* The mapped index. */ | |
201 | struct mapped_index *index_table; | |
6502dd73 DJ |
202 | }; |
203 | ||
204 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c SS |
205 | |
206 | /* names of the debugging sections */ | |
207 | ||
233a11ab CS |
208 | /* Note that if the debugging section has been compressed, it might |
209 | have a name like .zdebug_info. */ | |
210 | ||
211 | #define INFO_SECTION "debug_info" | |
212 | #define ABBREV_SECTION "debug_abbrev" | |
213 | #define LINE_SECTION "debug_line" | |
233a11ab CS |
214 | #define LOC_SECTION "debug_loc" |
215 | #define MACINFO_SECTION "debug_macinfo" | |
216 | #define STR_SECTION "debug_str" | |
217 | #define RANGES_SECTION "debug_ranges" | |
348e048f | 218 | #define TYPES_SECTION "debug_types" |
233a11ab CS |
219 | #define FRAME_SECTION "debug_frame" |
220 | #define EH_FRAME_SECTION "eh_frame" | |
9291a0cd | 221 | #define GDB_INDEX_SECTION "gdb_index" |
c906108c SS |
222 | |
223 | /* local data types */ | |
224 | ||
57349743 JB |
225 | /* We hold several abbreviation tables in memory at the same time. */ |
226 | #ifndef ABBREV_HASH_SIZE | |
227 | #define ABBREV_HASH_SIZE 121 | |
228 | #endif | |
229 | ||
107d2387 AC |
230 | /* The data in a compilation unit header, after target2host |
231 | translation, looks like this. */ | |
c906108c | 232 | struct comp_unit_head |
a738430d | 233 | { |
c764a876 | 234 | unsigned int length; |
a738430d | 235 | short version; |
a738430d MK |
236 | unsigned char addr_size; |
237 | unsigned char signed_addr_p; | |
9cbfa09e | 238 | unsigned int abbrev_offset; |
57349743 | 239 | |
a738430d MK |
240 | /* Size of file offsets; either 4 or 8. */ |
241 | unsigned int offset_size; | |
57349743 | 242 | |
a738430d MK |
243 | /* Size of the length field; either 4 or 12. */ |
244 | unsigned int initial_length_size; | |
57349743 | 245 | |
a738430d MK |
246 | /* Offset to the first byte of this compilation unit header in the |
247 | .debug_info section, for resolving relative reference dies. */ | |
248 | unsigned int offset; | |
57349743 | 249 | |
d00adf39 DE |
250 | /* Offset to first die in this cu from the start of the cu. |
251 | This will be the first byte following the compilation unit header. */ | |
252 | unsigned int first_die_offset; | |
a738430d | 253 | }; |
c906108c | 254 | |
e7c27a73 DJ |
255 | /* Internal state when decoding a particular compilation unit. */ |
256 | struct dwarf2_cu | |
257 | { | |
258 | /* The objfile containing this compilation unit. */ | |
259 | struct objfile *objfile; | |
260 | ||
d00adf39 | 261 | /* The header of the compilation unit. */ |
e7c27a73 | 262 | struct comp_unit_head header; |
e142c38c | 263 | |
d00adf39 DE |
264 | /* Base address of this compilation unit. */ |
265 | CORE_ADDR base_address; | |
266 | ||
267 | /* Non-zero if base_address has been set. */ | |
268 | int base_known; | |
269 | ||
e142c38c DJ |
270 | struct function_range *first_fn, *last_fn, *cached_fn; |
271 | ||
272 | /* The language we are debugging. */ | |
273 | enum language language; | |
274 | const struct language_defn *language_defn; | |
275 | ||
b0f35d58 DL |
276 | const char *producer; |
277 | ||
e142c38c DJ |
278 | /* The generic symbol table building routines have separate lists for |
279 | file scope symbols and all all other scopes (local scopes). So | |
280 | we need to select the right one to pass to add_symbol_to_list(). | |
281 | We do it by keeping a pointer to the correct list in list_in_scope. | |
282 | ||
283 | FIXME: The original dwarf code just treated the file scope as the | |
284 | first local scope, and all other local scopes as nested local | |
285 | scopes, and worked fine. Check to see if we really need to | |
286 | distinguish these in buildsym.c. */ | |
287 | struct pending **list_in_scope; | |
288 | ||
f3dd6933 DJ |
289 | /* DWARF abbreviation table associated with this compilation unit. */ |
290 | struct abbrev_info **dwarf2_abbrevs; | |
291 | ||
292 | /* Storage for the abbrev table. */ | |
293 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
294 | |
295 | /* Hash table holding all the loaded partial DIEs. */ | |
296 | htab_t partial_dies; | |
297 | ||
298 | /* Storage for things with the same lifetime as this read-in compilation | |
299 | unit, including partial DIEs. */ | |
300 | struct obstack comp_unit_obstack; | |
301 | ||
ae038cb0 DJ |
302 | /* When multiple dwarf2_cu structures are living in memory, this field |
303 | chains them all together, so that they can be released efficiently. | |
304 | We will probably also want a generation counter so that most-recently-used | |
305 | compilation units are cached... */ | |
306 | struct dwarf2_per_cu_data *read_in_chain; | |
307 | ||
308 | /* Backchain to our per_cu entry if the tree has been built. */ | |
309 | struct dwarf2_per_cu_data *per_cu; | |
310 | ||
f792889a DJ |
311 | /* Pointer to the die -> type map. Although it is stored |
312 | permanently in per_cu, we copy it here to avoid double | |
313 | indirection. */ | |
314 | htab_t type_hash; | |
315 | ||
ae038cb0 DJ |
316 | /* How many compilation units ago was this CU last referenced? */ |
317 | int last_used; | |
318 | ||
10b3939b | 319 | /* A hash table of die offsets for following references. */ |
51545339 | 320 | htab_t die_hash; |
10b3939b DJ |
321 | |
322 | /* Full DIEs if read in. */ | |
323 | struct die_info *dies; | |
324 | ||
325 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
326 | units referenced by this one. Only set during full symbol processing; | |
327 | partial symbol tables do not have dependencies. */ | |
328 | htab_t dependencies; | |
329 | ||
cb1df416 DJ |
330 | /* Header data from the line table, during full symbol processing. */ |
331 | struct line_header *line_header; | |
332 | ||
ae038cb0 DJ |
333 | /* Mark used when releasing cached dies. */ |
334 | unsigned int mark : 1; | |
335 | ||
336 | /* This flag will be set if this compilation unit might include | |
337 | inter-compilation-unit references. */ | |
338 | unsigned int has_form_ref_addr : 1; | |
339 | ||
72bf9492 DJ |
340 | /* This flag will be set if this compilation unit includes any |
341 | DW_TAG_namespace DIEs. If we know that there are explicit | |
342 | DIEs for namespaces, we don't need to try to infer them | |
343 | from mangled names. */ | |
344 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
345 | }; |
346 | ||
9291a0cd TT |
347 | /* When using the index (and thus not using psymtabs), each CU has an |
348 | object of this type. This is used to hold information needed by | |
349 | the various "quick" methods. */ | |
350 | struct dwarf2_per_cu_quick_data | |
351 | { | |
352 | /* The line table. This can be NULL if there was no line table. */ | |
353 | struct line_header *lines; | |
354 | ||
355 | /* The file names from the line table. */ | |
356 | const char **file_names; | |
357 | /* The file names from the line table after being run through | |
358 | gdb_realpath. */ | |
359 | const char **full_names; | |
360 | ||
361 | /* The corresponding symbol table. This is NULL if symbols for this | |
362 | CU have not yet been read. */ | |
363 | struct symtab *symtab; | |
364 | ||
365 | /* A temporary mark bit used when iterating over all CUs in | |
366 | expand_symtabs_matching. */ | |
367 | unsigned int mark : 1; | |
368 | ||
369 | /* True if we've tried to read the line table. */ | |
370 | unsigned int read_lines : 1; | |
371 | }; | |
372 | ||
10b3939b DJ |
373 | /* Persistent data held for a compilation unit, even when not |
374 | processing it. We put a pointer to this structure in the | |
375 | read_symtab_private field of the psymtab. If we encounter | |
376 | inter-compilation-unit references, we also maintain a sorted | |
377 | list of all compilation units. */ | |
378 | ||
ae038cb0 DJ |
379 | struct dwarf2_per_cu_data |
380 | { | |
348e048f | 381 | /* The start offset and length of this compilation unit. 2**29-1 |
ae038cb0 | 382 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
383 | - if it doesn't, GDB will fall over anyway. |
384 | NOTE: Unlike comp_unit_head.length, this length includes | |
385 | initial_length_size. */ | |
c764a876 | 386 | unsigned int offset; |
348e048f | 387 | unsigned int length : 29; |
ae038cb0 DJ |
388 | |
389 | /* Flag indicating this compilation unit will be read in before | |
390 | any of the current compilation units are processed. */ | |
c764a876 | 391 | unsigned int queued : 1; |
ae038cb0 | 392 | |
5afb4e99 DJ |
393 | /* This flag will be set if we need to load absolutely all DIEs |
394 | for this compilation unit, instead of just the ones we think | |
395 | are interesting. It gets set if we look for a DIE in the | |
396 | hash table and don't find it. */ | |
397 | unsigned int load_all_dies : 1; | |
398 | ||
348e048f DE |
399 | /* Non-zero if this CU is from .debug_types. |
400 | Otherwise it's from .debug_info. */ | |
401 | unsigned int from_debug_types : 1; | |
402 | ||
17ea53c3 JK |
403 | /* Set to non-NULL iff this CU is currently loaded. When it gets freed out |
404 | of the CU cache it gets reset to NULL again. */ | |
ae038cb0 | 405 | struct dwarf2_cu *cu; |
1c379e20 DJ |
406 | |
407 | /* If full symbols for this CU have been read in, then this field | |
408 | holds a map of DIE offsets to types. It isn't always possible | |
409 | to reconstruct this information later, so we have to preserve | |
410 | it. */ | |
1c379e20 | 411 | htab_t type_hash; |
10b3939b | 412 | |
9291a0cd TT |
413 | /* The corresponding objfile. */ |
414 | struct objfile *objfile; | |
415 | ||
416 | /* When using partial symbol tables, the 'psymtab' field is active. | |
417 | Otherwise the 'quick' field is active. */ | |
418 | union | |
419 | { | |
420 | /* The partial symbol table associated with this compilation unit, | |
421 | or NULL for partial units (which do not have an associated | |
422 | symtab). */ | |
423 | struct partial_symtab *psymtab; | |
424 | ||
425 | /* Data needed by the "quick" functions. */ | |
426 | struct dwarf2_per_cu_quick_data *quick; | |
427 | } v; | |
ae038cb0 DJ |
428 | }; |
429 | ||
348e048f DE |
430 | /* Entry in the signatured_types hash table. */ |
431 | ||
432 | struct signatured_type | |
433 | { | |
434 | ULONGEST signature; | |
435 | ||
436 | /* Offset in .debug_types of the TU (type_unit) for this type. */ | |
437 | unsigned int offset; | |
438 | ||
439 | /* Offset in .debug_types of the type defined by this TU. */ | |
440 | unsigned int type_offset; | |
441 | ||
442 | /* The CU(/TU) of this type. */ | |
443 | struct dwarf2_per_cu_data per_cu; | |
444 | }; | |
445 | ||
93311388 DE |
446 | /* Struct used to pass misc. parameters to read_die_and_children, et. al. |
447 | which are used for both .debug_info and .debug_types dies. | |
448 | All parameters here are unchanging for the life of the call. | |
449 | This struct exists to abstract away the constant parameters of | |
450 | die reading. */ | |
451 | ||
452 | struct die_reader_specs | |
453 | { | |
454 | /* The bfd of this objfile. */ | |
455 | bfd* abfd; | |
456 | ||
457 | /* The CU of the DIE we are parsing. */ | |
458 | struct dwarf2_cu *cu; | |
459 | ||
460 | /* Pointer to start of section buffer. | |
461 | This is either the start of .debug_info or .debug_types. */ | |
462 | const gdb_byte *buffer; | |
463 | }; | |
464 | ||
debd256d JB |
465 | /* The line number information for a compilation unit (found in the |
466 | .debug_line section) begins with a "statement program header", | |
467 | which contains the following information. */ | |
468 | struct line_header | |
469 | { | |
470 | unsigned int total_length; | |
471 | unsigned short version; | |
472 | unsigned int header_length; | |
473 | unsigned char minimum_instruction_length; | |
2dc7f7b3 | 474 | unsigned char maximum_ops_per_instruction; |
debd256d JB |
475 | unsigned char default_is_stmt; |
476 | int line_base; | |
477 | unsigned char line_range; | |
478 | unsigned char opcode_base; | |
479 | ||
480 | /* standard_opcode_lengths[i] is the number of operands for the | |
481 | standard opcode whose value is i. This means that | |
482 | standard_opcode_lengths[0] is unused, and the last meaningful | |
483 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
484 | unsigned char *standard_opcode_lengths; | |
485 | ||
486 | /* The include_directories table. NOTE! These strings are not | |
487 | allocated with xmalloc; instead, they are pointers into | |
488 | debug_line_buffer. If you try to free them, `free' will get | |
489 | indigestion. */ | |
490 | unsigned int num_include_dirs, include_dirs_size; | |
491 | char **include_dirs; | |
492 | ||
493 | /* The file_names table. NOTE! These strings are not allocated | |
494 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
495 | Don't try to free them directly. */ | |
496 | unsigned int num_file_names, file_names_size; | |
497 | struct file_entry | |
c906108c | 498 | { |
debd256d JB |
499 | char *name; |
500 | unsigned int dir_index; | |
501 | unsigned int mod_time; | |
502 | unsigned int length; | |
aaa75496 | 503 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 504 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
505 | } *file_names; |
506 | ||
507 | /* The start and end of the statement program following this | |
6502dd73 | 508 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 509 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 510 | }; |
c906108c SS |
511 | |
512 | /* When we construct a partial symbol table entry we only | |
513 | need this much information. */ | |
514 | struct partial_die_info | |
515 | { | |
72bf9492 | 516 | /* Offset of this DIE. */ |
c906108c | 517 | unsigned int offset; |
72bf9492 DJ |
518 | |
519 | /* DWARF-2 tag for this DIE. */ | |
520 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
521 | ||
72bf9492 DJ |
522 | /* Assorted flags describing the data found in this DIE. */ |
523 | unsigned int has_children : 1; | |
524 | unsigned int is_external : 1; | |
525 | unsigned int is_declaration : 1; | |
526 | unsigned int has_type : 1; | |
527 | unsigned int has_specification : 1; | |
528 | unsigned int has_pc_info : 1; | |
529 | ||
530 | /* Flag set if the SCOPE field of this structure has been | |
531 | computed. */ | |
532 | unsigned int scope_set : 1; | |
533 | ||
fa4028e9 JB |
534 | /* Flag set if the DIE has a byte_size attribute. */ |
535 | unsigned int has_byte_size : 1; | |
536 | ||
72bf9492 | 537 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 538 | sometimes a default name for unnamed DIEs. */ |
c906108c | 539 | char *name; |
72bf9492 DJ |
540 | |
541 | /* The scope to prepend to our children. This is generally | |
542 | allocated on the comp_unit_obstack, so will disappear | |
543 | when this compilation unit leaves the cache. */ | |
544 | char *scope; | |
545 | ||
546 | /* The location description associated with this DIE, if any. */ | |
547 | struct dwarf_block *locdesc; | |
548 | ||
549 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
550 | CORE_ADDR lowpc; |
551 | CORE_ADDR highpc; | |
72bf9492 | 552 | |
93311388 | 553 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 554 | DW_AT_sibling, if any. */ |
fe1b8b76 | 555 | gdb_byte *sibling; |
72bf9492 DJ |
556 | |
557 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
558 | DW_AT_specification (or DW_AT_abstract_origin or | |
559 | DW_AT_extension). */ | |
560 | unsigned int spec_offset; | |
561 | ||
562 | /* Pointers to this DIE's parent, first child, and next sibling, | |
563 | if any. */ | |
564 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
565 | }; |
566 | ||
567 | /* This data structure holds the information of an abbrev. */ | |
568 | struct abbrev_info | |
569 | { | |
570 | unsigned int number; /* number identifying abbrev */ | |
571 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
572 | unsigned short has_children; /* boolean */ |
573 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
574 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
575 | struct abbrev_info *next; /* next in chain */ | |
576 | }; | |
577 | ||
578 | struct attr_abbrev | |
579 | { | |
9d25dd43 DE |
580 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
581 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
582 | }; |
583 | ||
b60c80d6 DJ |
584 | /* Attributes have a name and a value */ |
585 | struct attribute | |
586 | { | |
9d25dd43 | 587 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
588 | ENUM_BITFIELD(dwarf_form) form : 15; |
589 | ||
590 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
591 | field should be in u.str (existing only for DW_STRING) but it is kept | |
592 | here for better struct attribute alignment. */ | |
593 | unsigned int string_is_canonical : 1; | |
594 | ||
b60c80d6 DJ |
595 | union |
596 | { | |
597 | char *str; | |
598 | struct dwarf_block *blk; | |
43bbcdc2 PH |
599 | ULONGEST unsnd; |
600 | LONGEST snd; | |
b60c80d6 | 601 | CORE_ADDR addr; |
348e048f | 602 | struct signatured_type *signatured_type; |
b60c80d6 DJ |
603 | } |
604 | u; | |
605 | }; | |
606 | ||
c906108c SS |
607 | /* This data structure holds a complete die structure. */ |
608 | struct die_info | |
609 | { | |
76815b17 DE |
610 | /* DWARF-2 tag for this DIE. */ |
611 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
612 | ||
613 | /* Number of attributes */ | |
614 | unsigned short num_attrs; | |
615 | ||
616 | /* Abbrev number */ | |
617 | unsigned int abbrev; | |
618 | ||
93311388 | 619 | /* Offset in .debug_info or .debug_types section. */ |
76815b17 | 620 | unsigned int offset; |
78ba4af6 JB |
621 | |
622 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
623 | points to this die's parent; CHILD points to the first child of | |
624 | this node; and all the children of a given node are chained | |
625 | together via their SIBLING fields, terminated by a die whose | |
626 | tag is zero. */ | |
639d11d3 DC |
627 | struct die_info *child; /* Its first child, if any. */ |
628 | struct die_info *sibling; /* Its next sibling, if any. */ | |
629 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 630 | |
b60c80d6 DJ |
631 | /* An array of attributes, with NUM_ATTRS elements. There may be |
632 | zero, but it's not common and zero-sized arrays are not | |
633 | sufficiently portable C. */ | |
634 | struct attribute attrs[1]; | |
c906108c SS |
635 | }; |
636 | ||
5fb290d7 DJ |
637 | struct function_range |
638 | { | |
639 | const char *name; | |
640 | CORE_ADDR lowpc, highpc; | |
641 | int seen_line; | |
642 | struct function_range *next; | |
643 | }; | |
644 | ||
c906108c SS |
645 | /* Get at parts of an attribute structure */ |
646 | ||
647 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 648 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
649 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
650 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
651 | #define DW_SND(attr) ((attr)->u.snd) | |
652 | #define DW_ADDR(attr) ((attr)->u.addr) | |
348e048f | 653 | #define DW_SIGNATURED_TYPE(attr) ((attr)->u.signatured_type) |
c906108c SS |
654 | |
655 | /* Blocks are a bunch of untyped bytes. */ | |
656 | struct dwarf_block | |
657 | { | |
658 | unsigned int size; | |
fe1b8b76 | 659 | gdb_byte *data; |
c906108c SS |
660 | }; |
661 | ||
c906108c SS |
662 | #ifndef ATTR_ALLOC_CHUNK |
663 | #define ATTR_ALLOC_CHUNK 4 | |
664 | #endif | |
665 | ||
c906108c SS |
666 | /* Allocate fields for structs, unions and enums in this size. */ |
667 | #ifndef DW_FIELD_ALLOC_CHUNK | |
668 | #define DW_FIELD_ALLOC_CHUNK 4 | |
669 | #endif | |
670 | ||
c906108c SS |
671 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
672 | but this would require a corresponding change in unpack_field_as_long | |
673 | and friends. */ | |
674 | static int bits_per_byte = 8; | |
675 | ||
676 | /* The routines that read and process dies for a C struct or C++ class | |
677 | pass lists of data member fields and lists of member function fields | |
678 | in an instance of a field_info structure, as defined below. */ | |
679 | struct field_info | |
c5aa993b JM |
680 | { |
681 | /* List of data member and baseclasses fields. */ | |
682 | struct nextfield | |
683 | { | |
684 | struct nextfield *next; | |
685 | int accessibility; | |
686 | int virtuality; | |
687 | struct field field; | |
688 | } | |
7d0ccb61 | 689 | *fields, *baseclasses; |
c906108c | 690 | |
7d0ccb61 | 691 | /* Number of fields (including baseclasses). */ |
c5aa993b | 692 | int nfields; |
c906108c | 693 | |
c5aa993b JM |
694 | /* Number of baseclasses. */ |
695 | int nbaseclasses; | |
c906108c | 696 | |
c5aa993b JM |
697 | /* Set if the accesibility of one of the fields is not public. */ |
698 | int non_public_fields; | |
c906108c | 699 | |
c5aa993b JM |
700 | /* Member function fields array, entries are allocated in the order they |
701 | are encountered in the object file. */ | |
702 | struct nextfnfield | |
703 | { | |
704 | struct nextfnfield *next; | |
705 | struct fn_field fnfield; | |
706 | } | |
707 | *fnfields; | |
c906108c | 708 | |
c5aa993b JM |
709 | /* Member function fieldlist array, contains name of possibly overloaded |
710 | member function, number of overloaded member functions and a pointer | |
711 | to the head of the member function field chain. */ | |
712 | struct fnfieldlist | |
713 | { | |
714 | char *name; | |
715 | int length; | |
716 | struct nextfnfield *head; | |
717 | } | |
718 | *fnfieldlists; | |
c906108c | 719 | |
c5aa993b JM |
720 | /* Number of entries in the fnfieldlists array. */ |
721 | int nfnfields; | |
98751a41 JK |
722 | |
723 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
724 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
725 | struct typedef_field_list | |
726 | { | |
727 | struct typedef_field field; | |
728 | struct typedef_field_list *next; | |
729 | } | |
730 | *typedef_field_list; | |
731 | unsigned typedef_field_list_count; | |
c5aa993b | 732 | }; |
c906108c | 733 | |
10b3939b DJ |
734 | /* One item on the queue of compilation units to read in full symbols |
735 | for. */ | |
736 | struct dwarf2_queue_item | |
737 | { | |
738 | struct dwarf2_per_cu_data *per_cu; | |
739 | struct dwarf2_queue_item *next; | |
740 | }; | |
741 | ||
742 | /* The current queue. */ | |
743 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
744 | ||
ae038cb0 DJ |
745 | /* Loaded secondary compilation units are kept in memory until they |
746 | have not been referenced for the processing of this many | |
747 | compilation units. Set this to zero to disable caching. Cache | |
748 | sizes of up to at least twenty will improve startup time for | |
749 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
750 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
751 | static void |
752 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
753 | struct cmd_list_element *c, const char *value) | |
754 | { | |
755 | fprintf_filtered (file, _("\ | |
756 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
757 | value); | |
758 | } | |
759 | ||
ae038cb0 | 760 | |
c906108c SS |
761 | /* Various complaints about symbol reading that don't abort the process */ |
762 | ||
4d3c2250 KB |
763 | static void |
764 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 765 | { |
4d3c2250 | 766 | complaint (&symfile_complaints, |
e2e0b3e5 | 767 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
768 | } |
769 | ||
25e43795 DJ |
770 | static void |
771 | dwarf2_debug_line_missing_file_complaint (void) | |
772 | { | |
773 | complaint (&symfile_complaints, | |
774 | _(".debug_line section has line data without a file")); | |
775 | } | |
776 | ||
59205f5a JB |
777 | static void |
778 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
779 | { | |
780 | complaint (&symfile_complaints, | |
781 | _(".debug_line section has line program sequence without an end")); | |
782 | } | |
783 | ||
4d3c2250 KB |
784 | static void |
785 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 786 | { |
e2e0b3e5 | 787 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
788 | } |
789 | ||
4d3c2250 KB |
790 | static void |
791 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
792 | int arg3) | |
2e276125 | 793 | { |
4d3c2250 | 794 | complaint (&symfile_complaints, |
e2e0b3e5 | 795 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
796 | arg2, arg3); |
797 | } | |
798 | ||
799 | static void | |
800 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 801 | { |
4d3c2250 | 802 | complaint (&symfile_complaints, |
e2e0b3e5 | 803 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
804 | } |
805 | ||
806 | static void | |
807 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 808 | { |
4d3c2250 | 809 | complaint (&symfile_complaints, |
e2e0b3e5 | 810 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
811 | arg1); |
812 | } | |
813 | ||
814 | static void | |
815 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 816 | { |
4d3c2250 | 817 | complaint (&symfile_complaints, |
e2e0b3e5 | 818 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 819 | } |
c906108c | 820 | |
c906108c SS |
821 | /* local function prototypes */ |
822 | ||
4efb68b1 | 823 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c | 824 | |
aaa75496 JB |
825 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
826 | struct objfile *); | |
827 | ||
828 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
d85a05f0 | 829 | struct die_info *, |
aaa75496 JB |
830 | struct partial_symtab *); |
831 | ||
c67a9c90 | 832 | static void dwarf2_build_psymtabs_hard (struct objfile *); |
c906108c | 833 | |
72bf9492 DJ |
834 | static void scan_partial_symbols (struct partial_die_info *, |
835 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 836 | int, struct dwarf2_cu *); |
c906108c | 837 | |
72bf9492 DJ |
838 | static void add_partial_symbol (struct partial_die_info *, |
839 | struct dwarf2_cu *); | |
63d06c5c | 840 | |
72bf9492 DJ |
841 | static void add_partial_namespace (struct partial_die_info *pdi, |
842 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 843 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 844 | |
5d7cb8df JK |
845 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
846 | CORE_ADDR *highpc, int need_pc, | |
847 | struct dwarf2_cu *cu); | |
848 | ||
72bf9492 DJ |
849 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
850 | struct dwarf2_cu *cu); | |
91c24f0a | 851 | |
bc30ff58 JB |
852 | static void add_partial_subprogram (struct partial_die_info *pdi, |
853 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 854 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 855 | |
fe1b8b76 | 856 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
93311388 DE |
857 | gdb_byte *buffer, gdb_byte *info_ptr, |
858 | bfd *abfd, struct dwarf2_cu *cu); | |
91c24f0a | 859 | |
a14ed312 | 860 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 861 | |
a14ed312 | 862 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 863 | |
e7c27a73 | 864 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 865 | |
f3dd6933 | 866 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 867 | |
fe1b8b76 | 868 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 869 | struct dwarf2_cu *); |
72bf9492 | 870 | |
57349743 | 871 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 872 | struct dwarf2_cu *); |
c906108c | 873 | |
93311388 DE |
874 | static struct partial_die_info *load_partial_dies (bfd *, |
875 | gdb_byte *, gdb_byte *, | |
876 | int, struct dwarf2_cu *); | |
72bf9492 | 877 | |
fe1b8b76 | 878 | static gdb_byte *read_partial_die (struct partial_die_info *, |
93311388 DE |
879 | struct abbrev_info *abbrev, |
880 | unsigned int, bfd *, | |
881 | gdb_byte *, gdb_byte *, | |
882 | struct dwarf2_cu *); | |
c906108c | 883 | |
c764a876 | 884 | static struct partial_die_info *find_partial_die (unsigned int, |
10b3939b | 885 | struct dwarf2_cu *); |
72bf9492 DJ |
886 | |
887 | static void fixup_partial_die (struct partial_die_info *, | |
888 | struct dwarf2_cu *); | |
889 | ||
fe1b8b76 JB |
890 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
891 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 892 | |
fe1b8b76 JB |
893 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
894 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 895 | |
fe1b8b76 | 896 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 897 | |
fe1b8b76 | 898 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 899 | |
fe1b8b76 | 900 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 901 | |
fe1b8b76 | 902 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 903 | |
93311388 | 904 | static ULONGEST read_8_bytes (bfd *, gdb_byte *); |
c906108c | 905 | |
fe1b8b76 | 906 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 907 | unsigned int *); |
c906108c | 908 | |
c764a876 DE |
909 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
910 | ||
911 | static LONGEST read_checked_initial_length_and_offset | |
912 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
913 | unsigned int *, unsigned int *); | |
613e1657 | 914 | |
fe1b8b76 | 915 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
916 | unsigned int *); |
917 | ||
918 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 919 | |
fe1b8b76 | 920 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 921 | |
fe1b8b76 | 922 | static char *read_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 923 | |
fe1b8b76 JB |
924 | static char *read_indirect_string (bfd *, gdb_byte *, |
925 | const struct comp_unit_head *, | |
926 | unsigned int *); | |
4bdf3d34 | 927 | |
fe1b8b76 | 928 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 929 | |
fe1b8b76 | 930 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 931 | |
fe1b8b76 | 932 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 933 | |
e142c38c | 934 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 935 | |
e142c38c DJ |
936 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
937 | struct dwarf2_cu *); | |
c906108c | 938 | |
348e048f DE |
939 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
940 | unsigned int, | |
941 | struct dwarf2_cu *); | |
942 | ||
05cf31d1 JB |
943 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
944 | struct dwarf2_cu *cu); | |
945 | ||
e142c38c | 946 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 947 | |
e142c38c | 948 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 949 | struct dwarf2_cu **); |
63d06c5c | 950 | |
debd256d JB |
951 | static void free_line_header (struct line_header *lh); |
952 | ||
aaa75496 JB |
953 | static void add_file_name (struct line_header *, char *, unsigned int, |
954 | unsigned int, unsigned int); | |
955 | ||
debd256d JB |
956 | static struct line_header *(dwarf_decode_line_header |
957 | (unsigned int offset, | |
e7c27a73 | 958 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
959 | |
960 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 961 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 962 | |
4f1520fb | 963 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 964 | |
a14ed312 | 965 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 966 | struct dwarf2_cu *); |
c906108c | 967 | |
a14ed312 | 968 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 969 | struct dwarf2_cu *); |
c906108c | 970 | |
2df3850c JM |
971 | static void dwarf2_const_value_data (struct attribute *attr, |
972 | struct symbol *sym, | |
973 | int bits); | |
974 | ||
e7c27a73 | 975 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 976 | |
b4ba55a1 JB |
977 | static int need_gnat_info (struct dwarf2_cu *); |
978 | ||
979 | static struct type *die_descriptive_type (struct die_info *, struct dwarf2_cu *); | |
980 | ||
981 | static void set_descriptive_type (struct type *, struct die_info *, | |
982 | struct dwarf2_cu *); | |
983 | ||
e7c27a73 DJ |
984 | static struct type *die_containing_type (struct die_info *, |
985 | struct dwarf2_cu *); | |
c906108c | 986 | |
e7c27a73 | 987 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 988 | |
f792889a | 989 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 990 | |
086ed43d | 991 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 992 | |
6e70227d | 993 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
994 | const char *suffix, int physname, |
995 | struct dwarf2_cu *cu); | |
63d06c5c | 996 | |
e7c27a73 | 997 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 998 | |
348e048f DE |
999 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1000 | ||
e7c27a73 | 1001 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1002 | |
e7c27a73 | 1003 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1004 | |
ff013f42 JK |
1005 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1006 | struct dwarf2_cu *, struct partial_symtab *); | |
1007 | ||
a14ed312 | 1008 | static int dwarf2_get_pc_bounds (struct die_info *, |
d85a05f0 DJ |
1009 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *, |
1010 | struct partial_symtab *); | |
c906108c | 1011 | |
fae299cd DC |
1012 | static void get_scope_pc_bounds (struct die_info *, |
1013 | CORE_ADDR *, CORE_ADDR *, | |
1014 | struct dwarf2_cu *); | |
1015 | ||
801e3a5b JB |
1016 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1017 | CORE_ADDR, struct dwarf2_cu *); | |
1018 | ||
a14ed312 | 1019 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1020 | struct dwarf2_cu *); |
c906108c | 1021 | |
a14ed312 | 1022 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1023 | struct type *, struct dwarf2_cu *); |
c906108c | 1024 | |
a14ed312 | 1025 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1026 | struct die_info *, struct type *, |
e7c27a73 | 1027 | struct dwarf2_cu *); |
c906108c | 1028 | |
a14ed312 | 1029 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 1030 | struct type *, struct dwarf2_cu *); |
c906108c | 1031 | |
134d01f1 | 1032 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1033 | |
e7c27a73 | 1034 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1035 | |
e7c27a73 | 1036 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1037 | |
5d7cb8df JK |
1038 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1039 | ||
27aa8d6a SW |
1040 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1041 | ||
f55ee35c JK |
1042 | static struct type *read_module_type (struct die_info *die, |
1043 | struct dwarf2_cu *cu); | |
1044 | ||
38d518c9 | 1045 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1046 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1047 | |
134d01f1 | 1048 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1049 | |
e7c27a73 | 1050 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1051 | |
6e70227d | 1052 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1053 | struct dwarf2_cu *); |
1054 | ||
93311388 | 1055 | static struct die_info *read_comp_unit (gdb_byte *, struct dwarf2_cu *); |
c906108c | 1056 | |
93311388 DE |
1057 | static struct die_info *read_die_and_children_1 (const struct die_reader_specs *reader, |
1058 | gdb_byte *info_ptr, | |
d97bc12b DE |
1059 | gdb_byte **new_info_ptr, |
1060 | struct die_info *parent); | |
1061 | ||
93311388 DE |
1062 | static struct die_info *read_die_and_children (const struct die_reader_specs *reader, |
1063 | gdb_byte *info_ptr, | |
fe1b8b76 | 1064 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1065 | struct die_info *parent); |
1066 | ||
93311388 DE |
1067 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *reader, |
1068 | gdb_byte *info_ptr, | |
fe1b8b76 | 1069 | gdb_byte **new_info_ptr, |
639d11d3 DC |
1070 | struct die_info *parent); |
1071 | ||
93311388 DE |
1072 | static gdb_byte *read_full_die (const struct die_reader_specs *reader, |
1073 | struct die_info **, gdb_byte *, | |
1074 | int *); | |
1075 | ||
e7c27a73 | 1076 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1077 | |
71c25dea TT |
1078 | static char *dwarf2_canonicalize_name (char *, struct dwarf2_cu *, |
1079 | struct obstack *); | |
1080 | ||
e142c38c | 1081 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1082 | |
e142c38c | 1083 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1084 | struct dwarf2_cu **); |
9219021c | 1085 | |
a14ed312 | 1086 | static char *dwarf_tag_name (unsigned int); |
c906108c | 1087 | |
a14ed312 | 1088 | static char *dwarf_attr_name (unsigned int); |
c906108c | 1089 | |
a14ed312 | 1090 | static char *dwarf_form_name (unsigned int); |
c906108c | 1091 | |
a14ed312 | 1092 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1093 | |
a14ed312 | 1094 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
1095 | |
1096 | #if 0 | |
a14ed312 | 1097 | static char *dwarf_cfi_name (unsigned int); |
c906108c SS |
1098 | #endif |
1099 | ||
f9aca02d | 1100 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1101 | |
d97bc12b DE |
1102 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1103 | ||
1104 | static void dump_die_for_error (struct die_info *); | |
1105 | ||
1106 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1107 | struct die_info *); | |
c906108c | 1108 | |
d97bc12b | 1109 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1110 | |
51545339 | 1111 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1112 | struct dwarf2_cu *); |
c906108c | 1113 | |
93311388 DE |
1114 | static int is_ref_attr (struct attribute *); |
1115 | ||
c764a876 | 1116 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1117 | |
43bbcdc2 | 1118 | static LONGEST dwarf2_get_attr_constant_value (struct attribute *, int); |
a02abb62 | 1119 | |
348e048f DE |
1120 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
1121 | struct attribute *, | |
1122 | struct dwarf2_cu **); | |
1123 | ||
10b3939b DJ |
1124 | static struct die_info *follow_die_ref (struct die_info *, |
1125 | struct attribute *, | |
f2f0e013 | 1126 | struct dwarf2_cu **); |
c906108c | 1127 | |
348e048f DE |
1128 | static struct die_info *follow_die_sig (struct die_info *, |
1129 | struct attribute *, | |
1130 | struct dwarf2_cu **); | |
1131 | ||
1132 | static void read_signatured_type_at_offset (struct objfile *objfile, | |
1133 | unsigned int offset); | |
1134 | ||
1135 | static void read_signatured_type (struct objfile *, | |
1136 | struct signatured_type *type_sig); | |
1137 | ||
c906108c SS |
1138 | /* memory allocation interface */ |
1139 | ||
7b5a2f43 | 1140 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1141 | |
f3dd6933 | 1142 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1143 | |
b60c80d6 | 1144 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1145 | |
e142c38c | 1146 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1147 | |
e142c38c DJ |
1148 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1149 | struct dwarf2_cu *); | |
5fb290d7 | 1150 | |
2e276125 | 1151 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1152 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1153 | |
8e19ed76 PS |
1154 | static int attr_form_is_block (struct attribute *); |
1155 | ||
3690dd37 JB |
1156 | static int attr_form_is_section_offset (struct attribute *); |
1157 | ||
1158 | static int attr_form_is_constant (struct attribute *); | |
1159 | ||
93e7bd98 DJ |
1160 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1161 | struct symbol *sym, | |
1162 | struct dwarf2_cu *cu); | |
4c2df51b | 1163 | |
93311388 DE |
1164 | static gdb_byte *skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
1165 | struct abbrev_info *abbrev, | |
1166 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1167 | |
72bf9492 DJ |
1168 | static void free_stack_comp_unit (void *); |
1169 | ||
72bf9492 DJ |
1170 | static hashval_t partial_die_hash (const void *item); |
1171 | ||
1172 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1173 | ||
ae038cb0 | 1174 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
c764a876 | 1175 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 DJ |
1176 | |
1177 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
c764a876 | 1178 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 | 1179 | |
93311388 DE |
1180 | static struct dwarf2_cu *alloc_one_comp_unit (struct objfile *objfile); |
1181 | ||
ae038cb0 DJ |
1182 | static void free_one_comp_unit (void *); |
1183 | ||
1184 | static void free_cached_comp_units (void *); | |
1185 | ||
1186 | static void age_cached_comp_units (void); | |
1187 | ||
1188 | static void free_one_cached_comp_unit (void *); | |
1189 | ||
f792889a DJ |
1190 | static struct type *set_die_type (struct die_info *, struct type *, |
1191 | struct dwarf2_cu *); | |
1c379e20 | 1192 | |
ae038cb0 DJ |
1193 | static void create_all_comp_units (struct objfile *); |
1194 | ||
93311388 DE |
1195 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, |
1196 | struct objfile *); | |
10b3939b DJ |
1197 | |
1198 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1199 | ||
1200 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1201 | struct dwarf2_per_cu_data *); | |
1202 | ||
ae038cb0 DJ |
1203 | static void dwarf2_mark (struct dwarf2_cu *); |
1204 | ||
1205 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1206 | ||
f792889a | 1207 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1208 | |
9291a0cd TT |
1209 | static void dwarf2_release_queue (void *dummy); |
1210 | ||
1211 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, | |
1212 | struct objfile *objfile); | |
1213 | ||
1214 | static void process_queue (struct objfile *objfile); | |
1215 | ||
1216 | static void find_file_and_directory (struct die_info *die, | |
1217 | struct dwarf2_cu *cu, | |
1218 | char **name, char **comp_dir); | |
1219 | ||
1220 | static char *file_full_name (int file, struct line_header *lh, | |
1221 | const char *comp_dir); | |
1222 | ||
1223 | static gdb_byte *partial_read_comp_unit_head (struct comp_unit_head *header, | |
1224 | gdb_byte *info_ptr, | |
1225 | gdb_byte *buffer, | |
1226 | unsigned int buffer_size, | |
1227 | bfd *abfd); | |
1228 | ||
1229 | static void init_cu_die_reader (struct die_reader_specs *reader, | |
1230 | struct dwarf2_cu *cu); | |
1231 | ||
1232 | #if WORDS_BIGENDIAN | |
1233 | ||
1234 | /* Convert VALUE between big- and little-endian. */ | |
1235 | static offset_type | |
1236 | byte_swap (offset_type value) | |
1237 | { | |
1238 | offset_type result; | |
1239 | ||
1240 | result = (value & 0xff) << 24; | |
1241 | result |= (value & 0xff00) << 8; | |
1242 | result |= (value & 0xff0000) >> 8; | |
1243 | result |= (value & 0xff000000) >> 24; | |
1244 | return result; | |
1245 | } | |
1246 | ||
1247 | #define MAYBE_SWAP(V) byte_swap (V) | |
1248 | ||
1249 | #else | |
1250 | #define MAYBE_SWAP(V) (V) | |
1251 | #endif /* WORDS_BIGENDIAN */ | |
1252 | ||
1253 | /* The suffix for an index file. */ | |
1254 | #define INDEX_SUFFIX ".gdb-index" | |
1255 | ||
c906108c SS |
1256 | /* Try to locate the sections we need for DWARF 2 debugging |
1257 | information and return true if we have enough to do something. */ | |
1258 | ||
1259 | int | |
6502dd73 | 1260 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1261 | { |
be391dca TT |
1262 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); |
1263 | if (!dwarf2_per_objfile) | |
1264 | { | |
1265 | /* Initialize per-objfile state. */ | |
1266 | struct dwarf2_per_objfile *data | |
1267 | = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
9a619af0 | 1268 | |
be391dca TT |
1269 | memset (data, 0, sizeof (*data)); |
1270 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1271 | dwarf2_per_objfile = data; | |
6502dd73 | 1272 | |
be391dca TT |
1273 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
1274 | dwarf2_per_objfile->objfile = objfile; | |
1275 | } | |
1276 | return (dwarf2_per_objfile->info.asection != NULL | |
1277 | && dwarf2_per_objfile->abbrev.asection != NULL); | |
c906108c SS |
1278 | } |
1279 | ||
233a11ab CS |
1280 | /* When loading sections, we can either look for ".<name>", or for |
1281 | * ".z<name>", which indicates a compressed section. */ | |
1282 | ||
1283 | static int | |
dce234bc | 1284 | section_is_p (const char *section_name, const char *name) |
233a11ab | 1285 | { |
dce234bc PP |
1286 | return (section_name[0] == '.' |
1287 | && (strcmp (section_name + 1, name) == 0 | |
1288 | || (section_name[1] == 'z' | |
1289 | && strcmp (section_name + 2, name) == 0))); | |
233a11ab CS |
1290 | } |
1291 | ||
c906108c SS |
1292 | /* This function is mapped across the sections and remembers the |
1293 | offset and size of each of the debugging sections we are interested | |
1294 | in. */ | |
1295 | ||
1296 | static void | |
72dca2f5 | 1297 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1298 | { |
dce234bc | 1299 | if (section_is_p (sectp->name, INFO_SECTION)) |
c906108c | 1300 | { |
dce234bc PP |
1301 | dwarf2_per_objfile->info.asection = sectp; |
1302 | dwarf2_per_objfile->info.size = bfd_get_section_size (sectp); | |
c906108c | 1303 | } |
dce234bc | 1304 | else if (section_is_p (sectp->name, ABBREV_SECTION)) |
c906108c | 1305 | { |
dce234bc PP |
1306 | dwarf2_per_objfile->abbrev.asection = sectp; |
1307 | dwarf2_per_objfile->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 1308 | } |
dce234bc | 1309 | else if (section_is_p (sectp->name, LINE_SECTION)) |
c906108c | 1310 | { |
dce234bc PP |
1311 | dwarf2_per_objfile->line.asection = sectp; |
1312 | dwarf2_per_objfile->line.size = bfd_get_section_size (sectp); | |
c906108c | 1313 | } |
dce234bc | 1314 | else if (section_is_p (sectp->name, LOC_SECTION)) |
c906108c | 1315 | { |
dce234bc PP |
1316 | dwarf2_per_objfile->loc.asection = sectp; |
1317 | dwarf2_per_objfile->loc.size = bfd_get_section_size (sectp); | |
c906108c | 1318 | } |
dce234bc | 1319 | else if (section_is_p (sectp->name, MACINFO_SECTION)) |
c906108c | 1320 | { |
dce234bc PP |
1321 | dwarf2_per_objfile->macinfo.asection = sectp; |
1322 | dwarf2_per_objfile->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 1323 | } |
dce234bc | 1324 | else if (section_is_p (sectp->name, STR_SECTION)) |
c906108c | 1325 | { |
dce234bc PP |
1326 | dwarf2_per_objfile->str.asection = sectp; |
1327 | dwarf2_per_objfile->str.size = bfd_get_section_size (sectp); | |
c906108c | 1328 | } |
dce234bc | 1329 | else if (section_is_p (sectp->name, FRAME_SECTION)) |
b6af0555 | 1330 | { |
dce234bc PP |
1331 | dwarf2_per_objfile->frame.asection = sectp; |
1332 | dwarf2_per_objfile->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 1333 | } |
dce234bc | 1334 | else if (section_is_p (sectp->name, EH_FRAME_SECTION)) |
b6af0555 | 1335 | { |
3799ccc6 | 1336 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
9a619af0 | 1337 | |
3799ccc6 EZ |
1338 | if (aflag & SEC_HAS_CONTENTS) |
1339 | { | |
dce234bc PP |
1340 | dwarf2_per_objfile->eh_frame.asection = sectp; |
1341 | dwarf2_per_objfile->eh_frame.size = bfd_get_section_size (sectp); | |
3799ccc6 | 1342 | } |
b6af0555 | 1343 | } |
dce234bc | 1344 | else if (section_is_p (sectp->name, RANGES_SECTION)) |
af34e669 | 1345 | { |
dce234bc PP |
1346 | dwarf2_per_objfile->ranges.asection = sectp; |
1347 | dwarf2_per_objfile->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 1348 | } |
348e048f DE |
1349 | else if (section_is_p (sectp->name, TYPES_SECTION)) |
1350 | { | |
1351 | dwarf2_per_objfile->types.asection = sectp; | |
1352 | dwarf2_per_objfile->types.size = bfd_get_section_size (sectp); | |
1353 | } | |
9291a0cd TT |
1354 | else if (section_is_p (sectp->name, GDB_INDEX_SECTION)) |
1355 | { | |
1356 | dwarf2_per_objfile->gdb_index.asection = sectp; | |
1357 | dwarf2_per_objfile->gdb_index.size = bfd_get_section_size (sectp); | |
1358 | } | |
dce234bc | 1359 | |
72dca2f5 FR |
1360 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) |
1361 | && bfd_section_vma (abfd, sectp) == 0) | |
1362 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1363 | } |
1364 | ||
dce234bc PP |
1365 | /* Decompress a section that was compressed using zlib. Store the |
1366 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
233a11ab CS |
1367 | |
1368 | static void | |
dce234bc PP |
1369 | zlib_decompress_section (struct objfile *objfile, asection *sectp, |
1370 | gdb_byte **outbuf, bfd_size_type *outsize) | |
1371 | { | |
1372 | bfd *abfd = objfile->obfd; | |
1373 | #ifndef HAVE_ZLIB_H | |
1374 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
1375 | "is disabled in this copy of GDB"), | |
1376 | bfd_get_filename (abfd)); | |
1377 | #else | |
1378 | bfd_size_type compressed_size = bfd_get_section_size (sectp); | |
1379 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
affddf13 | 1380 | struct cleanup *cleanup = make_cleanup (xfree, compressed_buffer); |
dce234bc PP |
1381 | bfd_size_type uncompressed_size; |
1382 | gdb_byte *uncompressed_buffer; | |
1383 | z_stream strm; | |
1384 | int rc; | |
1385 | int header_size = 12; | |
1386 | ||
1387 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1388 | || bfd_bread (compressed_buffer, compressed_size, abfd) != compressed_size) | |
1389 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1390 | bfd_get_filename (abfd)); | |
1391 | ||
1392 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
1393 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
1394 | if (compressed_size < header_size | |
1395 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
1396 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
1397 | bfd_get_filename (abfd)); | |
1398 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
1399 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
1400 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
1401 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
1402 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
1403 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
1404 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
1405 | uncompressed_size += compressed_buffer[11]; | |
1406 | ||
1407 | /* It is possible the section consists of several compressed | |
1408 | buffers concatenated together, so we uncompress in a loop. */ | |
1409 | strm.zalloc = NULL; | |
1410 | strm.zfree = NULL; | |
1411 | strm.opaque = NULL; | |
1412 | strm.avail_in = compressed_size - header_size; | |
1413 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
1414 | strm.avail_out = uncompressed_size; | |
1415 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
1416 | uncompressed_size); | |
1417 | rc = inflateInit (&strm); | |
1418 | while (strm.avail_in > 0) | |
1419 | { | |
1420 | if (rc != Z_OK) | |
1421 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
1422 | bfd_get_filename (abfd), rc); | |
1423 | strm.next_out = ((Bytef*) uncompressed_buffer | |
1424 | + (uncompressed_size - strm.avail_out)); | |
1425 | rc = inflate (&strm, Z_FINISH); | |
1426 | if (rc != Z_STREAM_END) | |
1427 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
1428 | bfd_get_filename (abfd), rc); | |
1429 | rc = inflateReset (&strm); | |
1430 | } | |
1431 | rc = inflateEnd (&strm); | |
1432 | if (rc != Z_OK | |
1433 | || strm.avail_out != 0) | |
1434 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
1435 | bfd_get_filename (abfd), rc); | |
1436 | ||
affddf13 | 1437 | do_cleanups (cleanup); |
dce234bc PP |
1438 | *outbuf = uncompressed_buffer; |
1439 | *outsize = uncompressed_size; | |
1440 | #endif | |
233a11ab CS |
1441 | } |
1442 | ||
dce234bc PP |
1443 | /* Read the contents of the section SECTP from object file specified by |
1444 | OBJFILE, store info about the section into INFO. | |
1445 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 1446 | |
dce234bc PP |
1447 | static void |
1448 | dwarf2_read_section (struct objfile *objfile, struct dwarf2_section_info *info) | |
c906108c | 1449 | { |
dce234bc PP |
1450 | bfd *abfd = objfile->obfd; |
1451 | asection *sectp = info->asection; | |
1452 | gdb_byte *buf, *retbuf; | |
1453 | unsigned char header[4]; | |
c906108c | 1454 | |
be391dca TT |
1455 | if (info->readin) |
1456 | return; | |
dce234bc PP |
1457 | info->buffer = NULL; |
1458 | info->was_mmapped = 0; | |
be391dca | 1459 | info->readin = 1; |
188dd5d6 | 1460 | |
dce234bc PP |
1461 | if (info->asection == NULL || info->size == 0) |
1462 | return; | |
c906108c | 1463 | |
dce234bc PP |
1464 | /* Check if the file has a 4-byte header indicating compression. */ |
1465 | if (info->size > sizeof (header) | |
1466 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
1467 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
1468 | { | |
1469 | /* Upon decompression, update the buffer and its size. */ | |
1470 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
1471 | { | |
1472 | zlib_decompress_section (objfile, sectp, &info->buffer, | |
1473 | &info->size); | |
1474 | return; | |
1475 | } | |
1476 | } | |
4bdf3d34 | 1477 | |
dce234bc PP |
1478 | #ifdef HAVE_MMAP |
1479 | if (pagesize == 0) | |
1480 | pagesize = getpagesize (); | |
2e276125 | 1481 | |
dce234bc PP |
1482 | /* Only try to mmap sections which are large enough: we don't want to |
1483 | waste space due to fragmentation. Also, only try mmap for sections | |
1484 | without relocations. */ | |
1485 | ||
1486 | if (info->size > 4 * pagesize && (sectp->flags & SEC_RELOC) == 0) | |
1487 | { | |
1488 | off_t pg_offset = sectp->filepos & ~(pagesize - 1); | |
1489 | size_t map_length = info->size + sectp->filepos - pg_offset; | |
1490 | caddr_t retbuf = bfd_mmap (abfd, 0, map_length, PROT_READ, | |
1491 | MAP_PRIVATE, pg_offset); | |
1492 | ||
1493 | if (retbuf != MAP_FAILED) | |
1494 | { | |
1495 | info->was_mmapped = 1; | |
1496 | info->buffer = retbuf + (sectp->filepos & (pagesize - 1)) ; | |
be391dca TT |
1497 | #if HAVE_POSIX_MADVISE |
1498 | posix_madvise (retbuf, map_length, POSIX_MADV_WILLNEED); | |
1499 | #endif | |
dce234bc PP |
1500 | return; |
1501 | } | |
1502 | } | |
1503 | #endif | |
1504 | ||
1505 | /* If we get here, we are a normal, not-compressed section. */ | |
1506 | info->buffer = buf | |
1507 | = obstack_alloc (&objfile->objfile_obstack, info->size); | |
1508 | ||
1509 | /* When debugging .o files, we may need to apply relocations; see | |
1510 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
1511 | We never compress sections in .o files, so we only need to | |
1512 | try this when the section is not compressed. */ | |
ac8035ab | 1513 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
1514 | if (retbuf != NULL) |
1515 | { | |
1516 | info->buffer = retbuf; | |
1517 | return; | |
1518 | } | |
1519 | ||
1520 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
1521 | || bfd_bread (buf, info->size, abfd) != info->size) | |
1522 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
1523 | bfd_get_filename (abfd)); | |
1524 | } | |
1525 | ||
1526 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and | |
1527 | SECTION_NAME. */ | |
af34e669 | 1528 | |
dce234bc PP |
1529 | void |
1530 | dwarf2_get_section_info (struct objfile *objfile, const char *section_name, | |
1531 | asection **sectp, gdb_byte **bufp, | |
1532 | bfd_size_type *sizep) | |
1533 | { | |
1534 | struct dwarf2_per_objfile *data | |
1535 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
1536 | struct dwarf2_section_info *info; | |
a3b2a86b TT |
1537 | |
1538 | /* We may see an objfile without any DWARF, in which case we just | |
1539 | return nothing. */ | |
1540 | if (data == NULL) | |
1541 | { | |
1542 | *sectp = NULL; | |
1543 | *bufp = NULL; | |
1544 | *sizep = 0; | |
1545 | return; | |
1546 | } | |
dce234bc PP |
1547 | if (section_is_p (section_name, EH_FRAME_SECTION)) |
1548 | info = &data->eh_frame; | |
1549 | else if (section_is_p (section_name, FRAME_SECTION)) | |
1550 | info = &data->frame; | |
0d53c4c4 | 1551 | else |
dce234bc PP |
1552 | gdb_assert (0); |
1553 | ||
1554 | if (info->asection != NULL && info->size != 0 && info->buffer == NULL) | |
1555 | /* We haven't read this section in yet. Do it now. */ | |
1556 | dwarf2_read_section (objfile, info); | |
1557 | ||
1558 | *sectp = info->asection; | |
1559 | *bufp = info->buffer; | |
1560 | *sizep = info->size; | |
1561 | } | |
1562 | ||
9291a0cd TT |
1563 | \f |
1564 | ||
1565 | /* Read in the symbols for PER_CU. OBJFILE is the objfile from which | |
1566 | this CU came. */ | |
1567 | static void | |
1568 | dw2_do_instantiate_symtab (struct objfile *objfile, | |
1569 | struct dwarf2_per_cu_data *per_cu) | |
1570 | { | |
1571 | struct cleanup *back_to; | |
1572 | ||
1573 | back_to = make_cleanup (dwarf2_release_queue, NULL); | |
1574 | ||
1575 | queue_comp_unit (per_cu, objfile); | |
1576 | ||
1577 | if (per_cu->from_debug_types) | |
1578 | read_signatured_type_at_offset (objfile, per_cu->offset); | |
1579 | else | |
1580 | load_full_comp_unit (per_cu, objfile); | |
1581 | ||
1582 | process_queue (objfile); | |
1583 | ||
1584 | /* Age the cache, releasing compilation units that have not | |
1585 | been used recently. */ | |
1586 | age_cached_comp_units (); | |
1587 | ||
1588 | do_cleanups (back_to); | |
1589 | } | |
1590 | ||
1591 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
1592 | the objfile from which this CU came. Returns the resulting symbol | |
1593 | table. */ | |
1594 | static struct symtab * | |
1595 | dw2_instantiate_symtab (struct objfile *objfile, | |
1596 | struct dwarf2_per_cu_data *per_cu) | |
1597 | { | |
1598 | if (!per_cu->v.quick->symtab) | |
1599 | { | |
1600 | struct cleanup *back_to = make_cleanup (free_cached_comp_units, NULL); | |
1601 | increment_reading_symtab (); | |
1602 | dw2_do_instantiate_symtab (objfile, per_cu); | |
1603 | do_cleanups (back_to); | |
1604 | } | |
1605 | return per_cu->v.quick->symtab; | |
1606 | } | |
1607 | ||
1608 | /* A helper function that knows how to read a 64-bit value in a way | |
1609 | that doesn't make gdb die. Returns 1 if the conversion went ok, 0 | |
1610 | otherwise. */ | |
1611 | static int | |
1612 | extract_cu_value (const char *bytes, ULONGEST *result) | |
1613 | { | |
1614 | if (sizeof (ULONGEST) < 8) | |
1615 | { | |
1616 | int i; | |
1617 | ||
1618 | /* Ignore the upper 4 bytes if they are all zero. */ | |
1619 | for (i = 0; i < 4; ++i) | |
1620 | if (bytes[i + 4] != 0) | |
1621 | return 0; | |
1622 | ||
1623 | *result = extract_unsigned_integer (bytes, 4, BFD_ENDIAN_LITTLE); | |
1624 | } | |
1625 | else | |
1626 | *result = extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
1627 | return 1; | |
1628 | } | |
1629 | ||
1630 | /* Read the CU list from the mapped index, and use it to create all | |
1631 | the CU objects for this objfile. Return 0 if something went wrong, | |
1632 | 1 if everything went ok. */ | |
1633 | static int | |
1634 | create_cus_from_index (struct objfile *objfile, struct mapped_index *index, | |
1635 | const gdb_byte *cu_list, offset_type cu_list_elements) | |
1636 | { | |
1637 | offset_type i; | |
1638 | const char *entry; | |
1639 | ||
1640 | dwarf2_per_objfile->n_comp_units = cu_list_elements / 2; | |
1641 | dwarf2_per_objfile->all_comp_units | |
1642 | = obstack_alloc (&objfile->objfile_obstack, | |
1643 | dwarf2_per_objfile->n_comp_units | |
1644 | * sizeof (struct dwarf2_per_cu_data *)); | |
1645 | ||
1646 | for (i = 0; i < cu_list_elements; i += 2) | |
1647 | { | |
1648 | struct dwarf2_per_cu_data *the_cu; | |
1649 | ULONGEST offset, length; | |
1650 | ||
1651 | if (!extract_cu_value (cu_list, &offset) | |
1652 | || !extract_cu_value (cu_list + 8, &length)) | |
1653 | return 0; | |
1654 | cu_list += 2 * 8; | |
1655 | ||
1656 | the_cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1657 | struct dwarf2_per_cu_data); | |
1658 | the_cu->offset = offset; | |
1659 | the_cu->length = length; | |
1660 | the_cu->objfile = objfile; | |
1661 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
1662 | struct dwarf2_per_cu_quick_data); | |
1663 | dwarf2_per_objfile->all_comp_units[i / 2] = the_cu; | |
1664 | } | |
1665 | ||
1666 | return 1; | |
1667 | } | |
1668 | ||
1669 | /* Read the address map data from the mapped index, and use it to | |
1670 | populate the objfile's psymtabs_addrmap. */ | |
1671 | static void | |
1672 | create_addrmap_from_index (struct objfile *objfile, struct mapped_index *index) | |
1673 | { | |
1674 | const gdb_byte *iter, *end; | |
1675 | struct obstack temp_obstack; | |
1676 | struct addrmap *mutable_map; | |
1677 | struct cleanup *cleanup; | |
1678 | CORE_ADDR baseaddr; | |
1679 | ||
1680 | obstack_init (&temp_obstack); | |
1681 | cleanup = make_cleanup_obstack_free (&temp_obstack); | |
1682 | mutable_map = addrmap_create_mutable (&temp_obstack); | |
1683 | ||
1684 | iter = index->address_table; | |
1685 | end = iter + index->address_table_size; | |
1686 | ||
1687 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
1688 | ||
1689 | while (iter < end) | |
1690 | { | |
1691 | ULONGEST hi, lo, cu_index; | |
1692 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1693 | iter += 8; | |
1694 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
1695 | iter += 8; | |
1696 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
1697 | iter += 4; | |
1698 | ||
1699 | addrmap_set_empty (mutable_map, lo + baseaddr, hi + baseaddr - 1, | |
1700 | dwarf2_per_objfile->all_comp_units[cu_index]); | |
1701 | } | |
1702 | ||
1703 | objfile->psymtabs_addrmap = addrmap_create_fixed (mutable_map, | |
1704 | &objfile->objfile_obstack); | |
1705 | do_cleanups (cleanup); | |
1706 | } | |
1707 | ||
1708 | /* The hash function for strings in the mapped index. This is the | |
1709 | same as the hashtab.c hash function, but we keep a separate copy to | |
1710 | maintain control over the implementation. This is necessary | |
1711 | because the hash function is tied to the format of the mapped index | |
1712 | file. */ | |
1713 | static hashval_t | |
1714 | mapped_index_string_hash (const void *p) | |
1715 | { | |
1716 | const unsigned char *str = (const unsigned char *) p; | |
1717 | hashval_t r = 0; | |
1718 | unsigned char c; | |
1719 | ||
1720 | while ((c = *str++) != 0) | |
1721 | r = r * 67 + c - 113; | |
1722 | ||
1723 | return r; | |
1724 | } | |
1725 | ||
1726 | /* Find a slot in the mapped index INDEX for the object named NAME. | |
1727 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
1728 | constant pool and return 1. If NAME cannot be found, return 0. */ | |
1729 | static int | |
1730 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, | |
1731 | offset_type **vec_out) | |
1732 | { | |
1733 | offset_type hash = mapped_index_string_hash (name); | |
1734 | offset_type slot, step; | |
1735 | ||
1736 | slot = hash & (index->index_table_slots - 1); | |
1737 | step = ((hash * 17) & (index->index_table_slots - 1)) | 1; | |
1738 | ||
1739 | for (;;) | |
1740 | { | |
1741 | /* Convert a slot number to an offset into the table. */ | |
1742 | offset_type i = 2 * slot; | |
1743 | const char *str; | |
1744 | if (index->index_table[i] == 0 && index->index_table[i + 1] == 0) | |
1745 | return 0; | |
1746 | ||
1747 | str = index->constant_pool + MAYBE_SWAP (index->index_table[i]); | |
1748 | if (!strcmp (name, str)) | |
1749 | { | |
1750 | *vec_out = (offset_type *) (index->constant_pool | |
1751 | + MAYBE_SWAP (index->index_table[i + 1])); | |
1752 | return 1; | |
1753 | } | |
1754 | ||
1755 | slot = (slot + step) & (index->index_table_slots - 1); | |
1756 | } | |
1757 | } | |
1758 | ||
1759 | /* Read the index file. If everything went ok, initialize the "quick" | |
1760 | elements of all the CUs and return 1. Otherwise, return 0. */ | |
1761 | static int | |
1762 | dwarf2_read_index (struct objfile *objfile) | |
1763 | { | |
9291a0cd TT |
1764 | char *addr; |
1765 | struct mapped_index *map; | |
b3b272e1 | 1766 | offset_type *metadata; |
9291a0cd TT |
1767 | const gdb_byte *cu_list; |
1768 | offset_type cu_list_elements; | |
1769 | ||
1770 | if (dwarf2_per_objfile->gdb_index.asection == NULL | |
1771 | || dwarf2_per_objfile->gdb_index.size == 0) | |
1772 | return 0; | |
1773 | dwarf2_read_section (objfile, &dwarf2_per_objfile->gdb_index); | |
1774 | ||
1775 | addr = dwarf2_per_objfile->gdb_index.buffer; | |
1776 | /* Version check. */ | |
1777 | if (MAYBE_SWAP (*(offset_type *) addr) != 1) | |
1778 | return 0; | |
1779 | ||
1780 | map = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct mapped_index); | |
b3b272e1 | 1781 | map->total_size = dwarf2_per_objfile->gdb_index.size; |
9291a0cd TT |
1782 | |
1783 | metadata = (offset_type *) (addr + sizeof (offset_type)); | |
1784 | cu_list = addr + MAYBE_SWAP (metadata[0]); | |
1785 | cu_list_elements = ((MAYBE_SWAP (metadata[1]) - MAYBE_SWAP (metadata[0])) | |
1786 | / 8); | |
1787 | map->address_table = addr + MAYBE_SWAP (metadata[1]); | |
1788 | map->address_table_size = (MAYBE_SWAP (metadata[2]) | |
1789 | - MAYBE_SWAP (metadata[1])); | |
1790 | map->index_table = (offset_type *) (addr + MAYBE_SWAP (metadata[2])); | |
1791 | map->index_table_slots = ((MAYBE_SWAP (metadata[3]) | |
1792 | - MAYBE_SWAP (metadata[2])) | |
1793 | / (2 * sizeof (offset_type))); | |
1794 | map->constant_pool = addr + MAYBE_SWAP (metadata[3]); | |
1795 | ||
1796 | if (!create_cus_from_index (objfile, map, cu_list, cu_list_elements)) | |
1797 | return 0; | |
1798 | ||
1799 | create_addrmap_from_index (objfile, map); | |
1800 | ||
1801 | dwarf2_per_objfile->index_table = map; | |
1802 | dwarf2_per_objfile->using_index = 1; | |
1803 | ||
1804 | return 1; | |
1805 | } | |
1806 | ||
1807 | /* A helper for the "quick" functions which sets the global | |
1808 | dwarf2_per_objfile according to OBJFILE. */ | |
1809 | static void | |
1810 | dw2_setup (struct objfile *objfile) | |
1811 | { | |
1812 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
1813 | gdb_assert (dwarf2_per_objfile); | |
1814 | } | |
1815 | ||
1816 | /* A helper for the "quick" functions which attempts to read the line | |
1817 | table for THIS_CU. */ | |
1818 | static void | |
1819 | dw2_require_line_header (struct objfile *objfile, | |
1820 | struct dwarf2_per_cu_data *this_cu) | |
1821 | { | |
1822 | bfd *abfd = objfile->obfd; | |
1823 | struct line_header *lh = NULL; | |
1824 | struct attribute *attr; | |
1825 | struct cleanup *cleanups; | |
1826 | struct die_info *comp_unit_die; | |
1827 | gdb_byte *beg_of_comp_unit, *info_ptr, *buffer; | |
1828 | int has_children, i; | |
1829 | struct dwarf2_cu cu; | |
1830 | unsigned int bytes_read, buffer_size; | |
1831 | struct die_reader_specs reader_specs; | |
1832 | char *name, *comp_dir; | |
1833 | ||
1834 | if (this_cu->v.quick->read_lines) | |
1835 | return; | |
1836 | this_cu->v.quick->read_lines = 1; | |
1837 | ||
1838 | memset (&cu, 0, sizeof (cu)); | |
1839 | cu.objfile = objfile; | |
1840 | obstack_init (&cu.comp_unit_obstack); | |
1841 | ||
1842 | cleanups = make_cleanup (free_stack_comp_unit, &cu); | |
1843 | ||
1844 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
1845 | buffer_size = dwarf2_per_objfile->info.size; | |
1846 | buffer = dwarf2_per_objfile->info.buffer; | |
1847 | info_ptr = buffer + this_cu->offset; | |
1848 | beg_of_comp_unit = info_ptr; | |
1849 | ||
1850 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, | |
1851 | buffer, buffer_size, | |
1852 | abfd); | |
1853 | ||
1854 | /* Complete the cu_header. */ | |
1855 | cu.header.offset = beg_of_comp_unit - buffer; | |
1856 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
1857 | ||
1858 | this_cu->cu = &cu; | |
1859 | cu.per_cu = this_cu; | |
1860 | ||
1861 | dwarf2_read_abbrevs (abfd, &cu); | |
1862 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
1863 | ||
1864 | if (this_cu->from_debug_types) | |
1865 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
1866 | init_cu_die_reader (&reader_specs, &cu); | |
1867 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
1868 | &has_children); | |
1869 | ||
1870 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, &cu); | |
1871 | if (attr) | |
1872 | { | |
1873 | unsigned int line_offset = DW_UNSND (attr); | |
1874 | lh = dwarf_decode_line_header (line_offset, abfd, &cu); | |
1875 | } | |
1876 | if (lh == NULL) | |
1877 | { | |
1878 | do_cleanups (cleanups); | |
1879 | return; | |
1880 | } | |
1881 | ||
1882 | find_file_and_directory (comp_unit_die, &cu, &name, &comp_dir); | |
1883 | ||
1884 | this_cu->v.quick->lines = lh; | |
1885 | ||
1886 | this_cu->v.quick->file_names | |
1887 | = obstack_alloc (&objfile->objfile_obstack, | |
1888 | lh->num_file_names * sizeof (char *)); | |
1889 | for (i = 0; i < lh->num_file_names; ++i) | |
1890 | this_cu->v.quick->file_names[i] = file_full_name (i + 1, lh, comp_dir); | |
1891 | ||
1892 | do_cleanups (cleanups); | |
1893 | } | |
1894 | ||
1895 | /* A helper for the "quick" functions which computes and caches the | |
1896 | real path for a given file name from the line table. | |
1897 | dw2_require_line_header must have been called before this is | |
1898 | invoked. */ | |
1899 | static const char * | |
1900 | dw2_require_full_path (struct objfile *objfile, | |
1901 | struct dwarf2_per_cu_data *cu, | |
1902 | int index) | |
1903 | { | |
1904 | if (!cu->v.quick->full_names) | |
1905 | cu->v.quick->full_names | |
1906 | = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
1907 | cu->v.quick->lines->num_file_names, | |
1908 | sizeof (char *)); | |
1909 | ||
1910 | if (!cu->v.quick->full_names[index]) | |
1911 | cu->v.quick->full_names[index] | |
1912 | = gdb_realpath (cu->v.quick->file_names[index]); | |
1913 | ||
1914 | return cu->v.quick->full_names[index]; | |
1915 | } | |
1916 | ||
1917 | static struct symtab * | |
1918 | dw2_find_last_source_symtab (struct objfile *objfile) | |
1919 | { | |
1920 | int index; | |
1921 | dw2_setup (objfile); | |
1922 | index = dwarf2_per_objfile->n_comp_units - 1; | |
1923 | return dw2_instantiate_symtab (objfile, | |
1924 | dwarf2_per_objfile->all_comp_units[index]); | |
1925 | } | |
1926 | ||
1927 | static void | |
1928 | dw2_forget_cached_source_info (struct objfile *objfile) | |
1929 | { | |
1930 | int i; | |
1931 | ||
1932 | dw2_setup (objfile); | |
1933 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
1934 | { | |
1935 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
1936 | ||
1937 | if (cu->v.quick->full_names) | |
1938 | { | |
1939 | int j; | |
1940 | ||
1941 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
1942 | xfree ((void *) cu->v.quick->full_names[j]); | |
1943 | } | |
1944 | } | |
1945 | } | |
1946 | ||
1947 | static int | |
1948 | dw2_lookup_symtab (struct objfile *objfile, const char *name, | |
1949 | const char *full_path, const char *real_path, | |
1950 | struct symtab **result) | |
1951 | { | |
1952 | int i; | |
1953 | int check_basename = lbasename (name) == name; | |
1954 | struct dwarf2_per_cu_data *base_cu = NULL; | |
1955 | ||
1956 | dw2_setup (objfile); | |
1957 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
1958 | { | |
1959 | int j; | |
1960 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
1961 | ||
1962 | if (cu->v.quick->symtab) | |
1963 | continue; | |
1964 | ||
1965 | dw2_require_line_header (objfile, cu); | |
1966 | if (!cu->v.quick->lines) | |
1967 | continue; | |
1968 | ||
1969 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
1970 | { | |
1971 | const char *this_name = cu->v.quick->file_names[j]; | |
1972 | ||
1973 | if (FILENAME_CMP (name, this_name) == 0) | |
1974 | { | |
1975 | *result = dw2_instantiate_symtab (objfile, cu); | |
1976 | return 1; | |
1977 | } | |
1978 | ||
1979 | if (check_basename && ! base_cu | |
1980 | && FILENAME_CMP (lbasename (this_name), name) == 0) | |
1981 | base_cu = cu; | |
1982 | ||
1983 | if (full_path != NULL) | |
1984 | { | |
1985 | const char *this_full_name = dw2_require_full_path (objfile, | |
1986 | cu, j); | |
1987 | ||
1988 | if (this_full_name | |
1989 | && FILENAME_CMP (full_path, this_full_name) == 0) | |
1990 | { | |
1991 | *result = dw2_instantiate_symtab (objfile, cu); | |
1992 | return 1; | |
1993 | } | |
1994 | } | |
1995 | ||
1996 | if (real_path != NULL) | |
1997 | { | |
1998 | const char *this_full_name = dw2_require_full_path (objfile, | |
1999 | cu, j); | |
2000 | ||
2001 | if (this_full_name != NULL) | |
2002 | { | |
2003 | char *rp = gdb_realpath (this_full_name); | |
2004 | if (rp != NULL && FILENAME_CMP (real_path, rp) == 0) | |
2005 | { | |
2006 | xfree (rp); | |
2007 | *result = dw2_instantiate_symtab (objfile, cu); | |
2008 | return 1; | |
2009 | } | |
2010 | xfree (rp); | |
2011 | } | |
2012 | } | |
2013 | } | |
2014 | } | |
2015 | ||
2016 | if (base_cu) | |
2017 | { | |
2018 | *result = dw2_instantiate_symtab (objfile, base_cu); | |
2019 | return 1; | |
2020 | } | |
2021 | ||
2022 | return 0; | |
2023 | } | |
2024 | ||
2025 | static struct symtab * | |
2026 | dw2_lookup_symbol (struct objfile *objfile, int block_index, | |
2027 | const char *name, domain_enum domain) | |
2028 | { | |
2029 | /* We do all the work in the pre_expand_symtabs_matching hook | |
2030 | instead. */ | |
2031 | return NULL; | |
2032 | } | |
2033 | ||
2034 | /* A helper function that expands all symtabs that hold an object | |
2035 | named NAME. */ | |
2036 | static void | |
2037 | dw2_do_expand_symtabs_matching (struct objfile *objfile, const char *name) | |
2038 | { | |
2039 | dw2_setup (objfile); | |
2040 | ||
2041 | if (dwarf2_per_objfile->index_table) | |
2042 | { | |
2043 | offset_type *vec; | |
2044 | ||
2045 | if (find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2046 | name, &vec)) | |
2047 | { | |
2048 | offset_type i, len = MAYBE_SWAP (*vec); | |
2049 | for (i = 0; i < len; ++i) | |
2050 | { | |
2051 | offset_type cu_index = MAYBE_SWAP (vec[i + 1]); | |
2052 | struct dwarf2_per_cu_data *cu; | |
2053 | cu = dwarf2_per_objfile->all_comp_units[cu_index]; | |
2054 | dw2_instantiate_symtab (objfile, cu); | |
2055 | } | |
2056 | } | |
2057 | } | |
2058 | } | |
2059 | ||
2060 | static void | |
2061 | dw2_pre_expand_symtabs_matching (struct objfile *objfile, | |
2062 | int kind, const char *name, | |
2063 | domain_enum domain) | |
2064 | { | |
2065 | dw2_do_expand_symtabs_matching (objfile, name); | |
2066 | } | |
2067 | ||
2068 | static void | |
2069 | dw2_print_stats (struct objfile *objfile) | |
2070 | { | |
2071 | int i, count; | |
2072 | ||
2073 | dw2_setup (objfile); | |
2074 | count = 0; | |
2075 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
2076 | { | |
2077 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
2078 | ||
2079 | if (!cu->v.quick->symtab) | |
2080 | ++count; | |
2081 | } | |
2082 | printf_filtered (_(" Number of unread CUs: %d\n"), count); | |
2083 | } | |
2084 | ||
2085 | static void | |
2086 | dw2_dump (struct objfile *objfile) | |
2087 | { | |
2088 | /* Nothing worth printing. */ | |
2089 | } | |
2090 | ||
2091 | static void | |
2092 | dw2_relocate (struct objfile *objfile, struct section_offsets *new_offsets, | |
2093 | struct section_offsets *delta) | |
2094 | { | |
2095 | /* There's nothing to relocate here. */ | |
2096 | } | |
2097 | ||
2098 | static void | |
2099 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
2100 | const char *func_name) | |
2101 | { | |
2102 | dw2_do_expand_symtabs_matching (objfile, func_name); | |
2103 | } | |
2104 | ||
2105 | static void | |
2106 | dw2_expand_all_symtabs (struct objfile *objfile) | |
2107 | { | |
2108 | int i; | |
2109 | ||
2110 | dw2_setup (objfile); | |
2111 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
2112 | { | |
2113 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
2114 | ||
2115 | dw2_instantiate_symtab (objfile, cu); | |
2116 | } | |
2117 | } | |
2118 | ||
2119 | static void | |
2120 | dw2_expand_symtabs_with_filename (struct objfile *objfile, | |
2121 | const char *filename) | |
2122 | { | |
2123 | int i; | |
2124 | ||
2125 | dw2_setup (objfile); | |
2126 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
2127 | { | |
2128 | int j; | |
2129 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
2130 | ||
2131 | if (cu->v.quick->symtab) | |
2132 | continue; | |
2133 | ||
2134 | dw2_require_line_header (objfile, cu); | |
2135 | if (!cu->v.quick->lines) | |
2136 | continue; | |
2137 | ||
2138 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
2139 | { | |
2140 | const char *this_name = cu->v.quick->file_names[j]; | |
2141 | if (strcmp (this_name, filename) == 0) | |
2142 | { | |
2143 | dw2_instantiate_symtab (objfile, cu); | |
2144 | break; | |
2145 | } | |
2146 | } | |
2147 | } | |
2148 | } | |
2149 | ||
dd786858 | 2150 | static const char * |
9291a0cd TT |
2151 | dw2_find_symbol_file (struct objfile *objfile, const char *name) |
2152 | { | |
2153 | struct dwarf2_per_cu_data *cu; | |
2154 | offset_type *vec; | |
2155 | ||
2156 | dw2_setup (objfile); | |
2157 | ||
2158 | if (!dwarf2_per_objfile->index_table) | |
2159 | return NULL; | |
2160 | ||
2161 | if (!find_slot_in_mapped_hash (dwarf2_per_objfile->index_table, | |
2162 | name, &vec)) | |
2163 | return NULL; | |
2164 | ||
2165 | /* Note that this just looks at the very first one named NAME -- but | |
2166 | actually we are looking for a function. find_main_filename | |
2167 | should be rewritten so that it doesn't require a custom hook. It | |
2168 | could just use the ordinary symbol tables. */ | |
2169 | /* vec[0] is the length, which must always be >0. */ | |
2170 | cu = dwarf2_per_objfile->all_comp_units[MAYBE_SWAP (vec[1])]; | |
2171 | ||
2172 | dw2_require_line_header (objfile, cu); | |
2173 | if (!cu->v.quick->lines) | |
2174 | return NULL; | |
2175 | ||
dd786858 | 2176 | return cu->v.quick->file_names[cu->v.quick->lines->num_file_names - 1]; |
9291a0cd TT |
2177 | } |
2178 | ||
2179 | static void | |
2180 | dw2_map_ada_symtabs (struct objfile *objfile, | |
2181 | int (*wild_match) (const char *, int, const char *), | |
2182 | int (*is_name_suffix) (const char *), | |
2183 | void (*callback) (struct objfile *, | |
2184 | struct symtab *, void *), | |
2185 | const char *name, int global, | |
2186 | domain_enum namespace, int wild, | |
2187 | void *data) | |
2188 | { | |
2189 | /* For now, we don't support Ada, so this function can't be | |
2190 | reached. */ | |
2191 | internal_error (__FILE__, __LINE__, | |
2192 | _("map_ada_symtabs called via index method")); | |
2193 | } | |
2194 | ||
2195 | static void | |
2196 | dw2_expand_symtabs_matching (struct objfile *objfile, | |
2197 | int (*file_matcher) (const char *, void *), | |
2198 | int (*name_matcher) (const char *, void *), | |
2199 | domain_enum kind, | |
2200 | void *data) | |
2201 | { | |
2202 | int i; | |
2203 | offset_type iter; | |
2204 | ||
2205 | dw2_setup (objfile); | |
2206 | if (!dwarf2_per_objfile->index_table) | |
2207 | return; | |
2208 | ||
2209 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
2210 | { | |
2211 | int j; | |
2212 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
2213 | ||
2214 | cu->v.quick->mark = 0; | |
2215 | if (cu->v.quick->symtab) | |
2216 | continue; | |
2217 | ||
2218 | dw2_require_line_header (objfile, cu); | |
2219 | if (!cu->v.quick->lines) | |
2220 | continue; | |
2221 | ||
2222 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
2223 | { | |
2224 | if (file_matcher (cu->v.quick->file_names[j], data)) | |
2225 | { | |
2226 | cu->v.quick->mark = 1; | |
2227 | break; | |
2228 | } | |
2229 | } | |
2230 | } | |
2231 | ||
2232 | for (iter = 0; | |
2233 | iter < dwarf2_per_objfile->index_table->index_table_slots; | |
2234 | ++iter) | |
2235 | { | |
2236 | offset_type idx = 2 * iter; | |
2237 | const char *name; | |
2238 | offset_type *vec, vec_len, vec_idx; | |
2239 | ||
2240 | if (dwarf2_per_objfile->index_table->index_table[idx] == 0 | |
2241 | && dwarf2_per_objfile->index_table->index_table[idx + 1] == 0) | |
2242 | continue; | |
2243 | ||
2244 | name = (dwarf2_per_objfile->index_table->constant_pool | |
2245 | + dwarf2_per_objfile->index_table->index_table[idx]); | |
2246 | ||
2247 | if (! (*name_matcher) (name, data)) | |
2248 | continue; | |
2249 | ||
2250 | /* The name was matched, now expand corresponding CUs that were | |
2251 | marked. */ | |
2252 | vec = (offset_type *) (dwarf2_per_objfile->index_table->constant_pool | |
2253 | + dwarf2_per_objfile->index_table->index_table[idx + 1]); | |
2254 | vec_len = MAYBE_SWAP (vec[0]); | |
2255 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
2256 | { | |
2257 | struct dwarf2_per_cu_data *cu | |
2258 | = dwarf2_per_objfile->all_comp_units[MAYBE_SWAP (vec[vec_idx + 1])]; | |
2259 | if (cu->v.quick->mark) | |
2260 | dw2_instantiate_symtab (objfile, cu); | |
2261 | } | |
2262 | } | |
2263 | } | |
2264 | ||
2265 | static struct symtab * | |
2266 | dw2_find_pc_sect_symtab (struct objfile *objfile, | |
2267 | struct minimal_symbol *msymbol, | |
2268 | CORE_ADDR pc, | |
2269 | struct obj_section *section, | |
2270 | int warn_if_readin) | |
2271 | { | |
2272 | struct dwarf2_per_cu_data *data; | |
2273 | ||
2274 | dw2_setup (objfile); | |
2275 | ||
2276 | if (!objfile->psymtabs_addrmap) | |
2277 | return NULL; | |
2278 | ||
2279 | data = addrmap_find (objfile->psymtabs_addrmap, pc); | |
2280 | if (!data) | |
2281 | return NULL; | |
2282 | ||
2283 | if (warn_if_readin && data->v.quick->symtab) | |
2284 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)\n"), | |
2285 | paddress (get_objfile_arch (objfile), pc)); | |
2286 | ||
2287 | return dw2_instantiate_symtab (objfile, data); | |
2288 | } | |
2289 | ||
2290 | static void | |
2291 | dw2_map_symbol_names (struct objfile *objfile, | |
2292 | void (*fun) (const char *, void *), | |
2293 | void *data) | |
2294 | { | |
2295 | offset_type iter; | |
2296 | dw2_setup (objfile); | |
2297 | ||
2298 | if (!dwarf2_per_objfile->index_table) | |
2299 | return; | |
2300 | ||
2301 | for (iter = 0; | |
2302 | iter < dwarf2_per_objfile->index_table->index_table_slots; | |
2303 | ++iter) | |
2304 | { | |
2305 | offset_type idx = 2 * iter; | |
2306 | const char *name; | |
2307 | offset_type *vec, vec_len, vec_idx; | |
2308 | ||
2309 | if (dwarf2_per_objfile->index_table->index_table[idx] == 0 | |
2310 | && dwarf2_per_objfile->index_table->index_table[idx + 1] == 0) | |
2311 | continue; | |
2312 | ||
2313 | name = (dwarf2_per_objfile->index_table->constant_pool | |
2314 | + dwarf2_per_objfile->index_table->index_table[idx]); | |
2315 | ||
2316 | (*fun) (name, data); | |
2317 | } | |
2318 | } | |
2319 | ||
2320 | static void | |
2321 | dw2_map_symbol_filenames (struct objfile *objfile, | |
2322 | void (*fun) (const char *, const char *, void *), | |
2323 | void *data) | |
2324 | { | |
2325 | int i; | |
2326 | ||
2327 | dw2_setup (objfile); | |
2328 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
2329 | { | |
2330 | int j; | |
2331 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
2332 | ||
2333 | if (cu->v.quick->symtab) | |
2334 | continue; | |
2335 | ||
2336 | dw2_require_line_header (objfile, cu); | |
2337 | if (!cu->v.quick->lines) | |
2338 | continue; | |
2339 | ||
2340 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
2341 | { | |
2342 | const char *this_full_name = dw2_require_full_path (objfile, cu, j); | |
2343 | (*fun) (cu->v.quick->file_names[j], this_full_name, data); | |
2344 | } | |
2345 | } | |
2346 | } | |
2347 | ||
2348 | static int | |
2349 | dw2_has_symbols (struct objfile *objfile) | |
2350 | { | |
2351 | return 1; | |
2352 | } | |
2353 | ||
2354 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
2355 | { | |
2356 | dw2_has_symbols, | |
2357 | dw2_find_last_source_symtab, | |
2358 | dw2_forget_cached_source_info, | |
2359 | dw2_lookup_symtab, | |
2360 | dw2_lookup_symbol, | |
2361 | dw2_pre_expand_symtabs_matching, | |
2362 | dw2_print_stats, | |
2363 | dw2_dump, | |
2364 | dw2_relocate, | |
2365 | dw2_expand_symtabs_for_function, | |
2366 | dw2_expand_all_symtabs, | |
2367 | dw2_expand_symtabs_with_filename, | |
2368 | dw2_find_symbol_file, | |
2369 | dw2_map_ada_symtabs, | |
2370 | dw2_expand_symtabs_matching, | |
2371 | dw2_find_pc_sect_symtab, | |
2372 | dw2_map_symbol_names, | |
2373 | dw2_map_symbol_filenames | |
2374 | }; | |
2375 | ||
2376 | /* Initialize for reading DWARF for this objfile. Return 0 if this | |
2377 | file will use psymtabs, or 1 if using the GNU index. */ | |
2378 | ||
2379 | int | |
2380 | dwarf2_initialize_objfile (struct objfile *objfile) | |
2381 | { | |
2382 | /* If we're about to read full symbols, don't bother with the | |
2383 | indices. In this case we also don't care if some other debug | |
2384 | format is making psymtabs, because they are all about to be | |
2385 | expanded anyway. */ | |
2386 | if ((objfile->flags & OBJF_READNOW)) | |
2387 | { | |
2388 | int i; | |
2389 | ||
2390 | dwarf2_per_objfile->using_index = 1; | |
2391 | create_all_comp_units (objfile); | |
2392 | ||
2393 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
2394 | { | |
2395 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
2396 | ||
2397 | cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2398 | struct dwarf2_per_cu_quick_data); | |
2399 | } | |
2400 | ||
2401 | /* Return 1 so that gdb sees the "quick" functions. However, | |
2402 | these functions will be no-ops because we will have expanded | |
2403 | all symtabs. */ | |
2404 | return 1; | |
2405 | } | |
2406 | ||
2407 | if (dwarf2_read_index (objfile)) | |
2408 | return 1; | |
2409 | ||
2410 | dwarf2_build_psymtabs (objfile); | |
2411 | return 0; | |
2412 | } | |
2413 | ||
2414 | \f | |
2415 | ||
dce234bc PP |
2416 | /* Build a partial symbol table. */ |
2417 | ||
2418 | void | |
f29dff0a | 2419 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 2420 | { |
f29dff0a | 2421 | if (objfile->global_psymbols.size == 0 && objfile->static_psymbols.size == 0) |
c906108c SS |
2422 | { |
2423 | init_psymbol_list (objfile, 1024); | |
2424 | } | |
2425 | ||
d146bf1e | 2426 | dwarf2_build_psymtabs_hard (objfile); |
c906108c | 2427 | } |
c906108c | 2428 | |
45452591 DE |
2429 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
2430 | ||
2431 | static inline int | |
2432 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
2433 | { | |
2434 | unsigned int bottom = cu_header->offset; | |
2435 | unsigned int top = (cu_header->offset | |
2436 | + cu_header->length | |
2437 | + cu_header->initial_length_size); | |
9a619af0 | 2438 | |
45452591 DE |
2439 | return (offset >= bottom && offset < top); |
2440 | } | |
2441 | ||
93311388 DE |
2442 | /* Read in the comp unit header information from the debug_info at info_ptr. |
2443 | NOTE: This leaves members offset, first_die_offset to be filled in | |
2444 | by the caller. */ | |
107d2387 | 2445 | |
fe1b8b76 | 2446 | static gdb_byte * |
107d2387 | 2447 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 2448 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
2449 | { |
2450 | int signed_addr; | |
891d2f0b | 2451 | unsigned int bytes_read; |
c764a876 DE |
2452 | |
2453 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
2454 | cu_header->initial_length_size = bytes_read; | |
2455 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 2456 | info_ptr += bytes_read; |
107d2387 AC |
2457 | cu_header->version = read_2_bytes (abfd, info_ptr); |
2458 | info_ptr += 2; | |
613e1657 | 2459 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
c764a876 | 2460 | &bytes_read); |
613e1657 | 2461 | info_ptr += bytes_read; |
107d2387 AC |
2462 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
2463 | info_ptr += 1; | |
2464 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
2465 | if (signed_addr < 0) | |
8e65ff28 | 2466 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2467 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 2468 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 2469 | |
107d2387 AC |
2470 | return info_ptr; |
2471 | } | |
2472 | ||
fe1b8b76 JB |
2473 | static gdb_byte * |
2474 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
93311388 | 2475 | gdb_byte *buffer, unsigned int buffer_size, |
72bf9492 DJ |
2476 | bfd *abfd) |
2477 | { | |
fe1b8b76 | 2478 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
2479 | |
2480 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
2481 | ||
2dc7f7b3 | 2482 | if (header->version != 2 && header->version != 3 && header->version != 4) |
8a3fe4f8 | 2483 | error (_("Dwarf Error: wrong version in compilation unit header " |
2dc7f7b3 TT |
2484 | "(is %d, should be 2, 3, or 4) [in module %s]"), header->version, |
2485 | bfd_get_filename (abfd)); | |
72bf9492 | 2486 | |
dce234bc | 2487 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev.size) |
8a3fe4f8 AC |
2488 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
2489 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 | 2490 | (long) header->abbrev_offset, |
93311388 | 2491 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2492 | bfd_get_filename (abfd)); |
2493 | ||
2494 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
93311388 | 2495 | > buffer + buffer_size) |
8a3fe4f8 AC |
2496 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
2497 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 | 2498 | (long) header->length, |
93311388 | 2499 | (long) (beg_of_comp_unit - buffer), |
72bf9492 DJ |
2500 | bfd_get_filename (abfd)); |
2501 | ||
2502 | return info_ptr; | |
2503 | } | |
2504 | ||
348e048f DE |
2505 | /* Read in the types comp unit header information from .debug_types entry at |
2506 | types_ptr. The result is a pointer to one past the end of the header. */ | |
2507 | ||
2508 | static gdb_byte * | |
2509 | read_type_comp_unit_head (struct comp_unit_head *cu_header, | |
2510 | ULONGEST *signature, | |
2511 | gdb_byte *types_ptr, bfd *abfd) | |
2512 | { | |
348e048f DE |
2513 | gdb_byte *initial_types_ptr = types_ptr; |
2514 | ||
6e70227d | 2515 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
fa238c03 | 2516 | &dwarf2_per_objfile->types); |
348e048f DE |
2517 | cu_header->offset = types_ptr - dwarf2_per_objfile->types.buffer; |
2518 | ||
2519 | types_ptr = read_comp_unit_head (cu_header, types_ptr, abfd); | |
2520 | ||
2521 | *signature = read_8_bytes (abfd, types_ptr); | |
2522 | types_ptr += 8; | |
2523 | types_ptr += cu_header->offset_size; | |
2524 | cu_header->first_die_offset = types_ptr - initial_types_ptr; | |
2525 | ||
2526 | return types_ptr; | |
2527 | } | |
2528 | ||
aaa75496 JB |
2529 | /* Allocate a new partial symtab for file named NAME and mark this new |
2530 | partial symtab as being an include of PST. */ | |
2531 | ||
2532 | static void | |
2533 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
2534 | struct objfile *objfile) | |
2535 | { | |
2536 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
2537 | ||
2538 | subpst->section_offsets = pst->section_offsets; | |
2539 | subpst->textlow = 0; | |
2540 | subpst->texthigh = 0; | |
2541 | ||
2542 | subpst->dependencies = (struct partial_symtab **) | |
2543 | obstack_alloc (&objfile->objfile_obstack, | |
2544 | sizeof (struct partial_symtab *)); | |
2545 | subpst->dependencies[0] = pst; | |
2546 | subpst->number_of_dependencies = 1; | |
2547 | ||
2548 | subpst->globals_offset = 0; | |
2549 | subpst->n_global_syms = 0; | |
2550 | subpst->statics_offset = 0; | |
2551 | subpst->n_static_syms = 0; | |
2552 | subpst->symtab = NULL; | |
2553 | subpst->read_symtab = pst->read_symtab; | |
2554 | subpst->readin = 0; | |
2555 | ||
2556 | /* No private part is necessary for include psymtabs. This property | |
2557 | can be used to differentiate between such include psymtabs and | |
10b3939b | 2558 | the regular ones. */ |
58a9656e | 2559 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
2560 | } |
2561 | ||
2562 | /* Read the Line Number Program data and extract the list of files | |
2563 | included by the source file represented by PST. Build an include | |
d85a05f0 | 2564 | partial symtab for each of these included files. */ |
aaa75496 JB |
2565 | |
2566 | static void | |
2567 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
d85a05f0 | 2568 | struct die_info *die, |
aaa75496 JB |
2569 | struct partial_symtab *pst) |
2570 | { | |
2571 | struct objfile *objfile = cu->objfile; | |
2572 | bfd *abfd = objfile->obfd; | |
d85a05f0 DJ |
2573 | struct line_header *lh = NULL; |
2574 | struct attribute *attr; | |
aaa75496 | 2575 | |
d85a05f0 DJ |
2576 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
2577 | if (attr) | |
2578 | { | |
2579 | unsigned int line_offset = DW_UNSND (attr); | |
9a619af0 | 2580 | |
d85a05f0 DJ |
2581 | lh = dwarf_decode_line_header (line_offset, abfd, cu); |
2582 | } | |
aaa75496 JB |
2583 | if (lh == NULL) |
2584 | return; /* No linetable, so no includes. */ | |
2585 | ||
2586 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
2587 | ||
2588 | free_line_header (lh); | |
2589 | } | |
2590 | ||
348e048f DE |
2591 | static hashval_t |
2592 | hash_type_signature (const void *item) | |
2593 | { | |
2594 | const struct signatured_type *type_sig = item; | |
9a619af0 | 2595 | |
348e048f DE |
2596 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
2597 | return type_sig->signature; | |
2598 | } | |
2599 | ||
2600 | static int | |
2601 | eq_type_signature (const void *item_lhs, const void *item_rhs) | |
2602 | { | |
2603 | const struct signatured_type *lhs = item_lhs; | |
2604 | const struct signatured_type *rhs = item_rhs; | |
9a619af0 | 2605 | |
348e048f DE |
2606 | return lhs->signature == rhs->signature; |
2607 | } | |
2608 | ||
2609 | /* Create the hash table of all entries in the .debug_types section. | |
2610 | The result is zero if there is an error (e.g. missing .debug_types section), | |
2611 | otherwise non-zero. */ | |
2612 | ||
2613 | static int | |
2614 | create_debug_types_hash_table (struct objfile *objfile) | |
2615 | { | |
be391dca | 2616 | gdb_byte *info_ptr; |
348e048f DE |
2617 | htab_t types_htab; |
2618 | ||
be391dca TT |
2619 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
2620 | info_ptr = dwarf2_per_objfile->types.buffer; | |
2621 | ||
348e048f DE |
2622 | if (info_ptr == NULL) |
2623 | { | |
2624 | dwarf2_per_objfile->signatured_types = NULL; | |
2625 | return 0; | |
2626 | } | |
2627 | ||
2628 | types_htab = htab_create_alloc_ex (41, | |
2629 | hash_type_signature, | |
2630 | eq_type_signature, | |
2631 | NULL, | |
2632 | &objfile->objfile_obstack, | |
2633 | hashtab_obstack_allocate, | |
2634 | dummy_obstack_deallocate); | |
2635 | ||
2636 | if (dwarf2_die_debug) | |
2637 | fprintf_unfiltered (gdb_stdlog, "Signatured types:\n"); | |
2638 | ||
2639 | while (info_ptr < dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
2640 | { | |
2641 | unsigned int offset; | |
2642 | unsigned int offset_size; | |
2643 | unsigned int type_offset; | |
2644 | unsigned int length, initial_length_size; | |
2645 | unsigned short version; | |
2646 | ULONGEST signature; | |
2647 | struct signatured_type *type_sig; | |
2648 | void **slot; | |
2649 | gdb_byte *ptr = info_ptr; | |
2650 | ||
2651 | offset = ptr - dwarf2_per_objfile->types.buffer; | |
2652 | ||
2653 | /* We need to read the type's signature in order to build the hash | |
2654 | table, but we don't need to read anything else just yet. */ | |
2655 | ||
2656 | /* Sanity check to ensure entire cu is present. */ | |
2657 | length = read_initial_length (objfile->obfd, ptr, &initial_length_size); | |
2658 | if (ptr + length + initial_length_size | |
2659 | > dwarf2_per_objfile->types.buffer + dwarf2_per_objfile->types.size) | |
2660 | { | |
2661 | complaint (&symfile_complaints, | |
2662 | _("debug type entry runs off end of `.debug_types' section, ignored")); | |
2663 | break; | |
2664 | } | |
2665 | ||
2666 | offset_size = initial_length_size == 4 ? 4 : 8; | |
2667 | ptr += initial_length_size; | |
2668 | version = bfd_get_16 (objfile->obfd, ptr); | |
2669 | ptr += 2; | |
2670 | ptr += offset_size; /* abbrev offset */ | |
2671 | ptr += 1; /* address size */ | |
2672 | signature = bfd_get_64 (objfile->obfd, ptr); | |
2673 | ptr += 8; | |
2674 | type_offset = read_offset_1 (objfile->obfd, ptr, offset_size); | |
2675 | ||
2676 | type_sig = obstack_alloc (&objfile->objfile_obstack, sizeof (*type_sig)); | |
2677 | memset (type_sig, 0, sizeof (*type_sig)); | |
2678 | type_sig->signature = signature; | |
2679 | type_sig->offset = offset; | |
2680 | type_sig->type_offset = type_offset; | |
2681 | ||
2682 | slot = htab_find_slot (types_htab, type_sig, INSERT); | |
2683 | gdb_assert (slot != NULL); | |
2684 | *slot = type_sig; | |
2685 | ||
2686 | if (dwarf2_die_debug) | |
2687 | fprintf_unfiltered (gdb_stdlog, " offset 0x%x, signature 0x%s\n", | |
2688 | offset, phex (signature, sizeof (signature))); | |
2689 | ||
2690 | info_ptr = info_ptr + initial_length_size + length; | |
2691 | } | |
2692 | ||
2693 | dwarf2_per_objfile->signatured_types = types_htab; | |
2694 | ||
2695 | return 1; | |
2696 | } | |
2697 | ||
2698 | /* Lookup a signature based type. | |
2699 | Returns NULL if SIG is not present in the table. */ | |
2700 | ||
2701 | static struct signatured_type * | |
2702 | lookup_signatured_type (struct objfile *objfile, ULONGEST sig) | |
2703 | { | |
2704 | struct signatured_type find_entry, *entry; | |
2705 | ||
2706 | if (dwarf2_per_objfile->signatured_types == NULL) | |
2707 | { | |
2708 | complaint (&symfile_complaints, | |
2709 | _("missing `.debug_types' section for DW_FORM_sig8 die")); | |
2710 | return 0; | |
2711 | } | |
2712 | ||
2713 | find_entry.signature = sig; | |
2714 | entry = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
2715 | return entry; | |
2716 | } | |
2717 | ||
d85a05f0 DJ |
2718 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
2719 | ||
2720 | static void | |
2721 | init_cu_die_reader (struct die_reader_specs *reader, | |
2722 | struct dwarf2_cu *cu) | |
2723 | { | |
2724 | reader->abfd = cu->objfile->obfd; | |
2725 | reader->cu = cu; | |
2726 | if (cu->per_cu->from_debug_types) | |
be391dca TT |
2727 | { |
2728 | gdb_assert (dwarf2_per_objfile->types.readin); | |
2729 | reader->buffer = dwarf2_per_objfile->types.buffer; | |
2730 | } | |
d85a05f0 | 2731 | else |
be391dca TT |
2732 | { |
2733 | gdb_assert (dwarf2_per_objfile->info.readin); | |
2734 | reader->buffer = dwarf2_per_objfile->info.buffer; | |
2735 | } | |
d85a05f0 DJ |
2736 | } |
2737 | ||
2738 | /* Find the base address of the compilation unit for range lists and | |
2739 | location lists. It will normally be specified by DW_AT_low_pc. | |
2740 | In DWARF-3 draft 4, the base address could be overridden by | |
2741 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2742 | compilation units with discontinuous ranges. */ | |
2743 | ||
2744 | static void | |
2745 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
2746 | { | |
2747 | struct attribute *attr; | |
2748 | ||
2749 | cu->base_known = 0; | |
2750 | cu->base_address = 0; | |
2751 | ||
2752 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
2753 | if (attr) | |
2754 | { | |
2755 | cu->base_address = DW_ADDR (attr); | |
2756 | cu->base_known = 1; | |
2757 | } | |
2758 | else | |
2759 | { | |
2760 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
2761 | if (attr) | |
2762 | { | |
2763 | cu->base_address = DW_ADDR (attr); | |
2764 | cu->base_known = 1; | |
2765 | } | |
2766 | } | |
2767 | } | |
2768 | ||
348e048f DE |
2769 | /* Subroutine of process_type_comp_unit and dwarf2_build_psymtabs_hard |
2770 | to combine the common parts. | |
93311388 | 2771 | Process a compilation unit for a psymtab. |
348e048f DE |
2772 | BUFFER is a pointer to the beginning of the dwarf section buffer, |
2773 | either .debug_info or debug_types. | |
93311388 DE |
2774 | INFO_PTR is a pointer to the start of the CU. |
2775 | Returns a pointer to the next CU. */ | |
aaa75496 | 2776 | |
93311388 DE |
2777 | static gdb_byte * |
2778 | process_psymtab_comp_unit (struct objfile *objfile, | |
2779 | struct dwarf2_per_cu_data *this_cu, | |
2780 | gdb_byte *buffer, gdb_byte *info_ptr, | |
2781 | unsigned int buffer_size) | |
c906108c | 2782 | { |
c906108c | 2783 | bfd *abfd = objfile->obfd; |
93311388 | 2784 | gdb_byte *beg_of_comp_unit = info_ptr; |
d85a05f0 | 2785 | struct die_info *comp_unit_die; |
c906108c | 2786 | struct partial_symtab *pst; |
5734ee8b | 2787 | CORE_ADDR baseaddr; |
93311388 DE |
2788 | struct cleanup *back_to_inner; |
2789 | struct dwarf2_cu cu; | |
d85a05f0 DJ |
2790 | int has_children, has_pc_info; |
2791 | struct attribute *attr; | |
d85a05f0 DJ |
2792 | CORE_ADDR best_lowpc = 0, best_highpc = 0; |
2793 | struct die_reader_specs reader_specs; | |
c906108c | 2794 | |
93311388 DE |
2795 | memset (&cu, 0, sizeof (cu)); |
2796 | cu.objfile = objfile; | |
2797 | obstack_init (&cu.comp_unit_obstack); | |
c906108c | 2798 | |
93311388 | 2799 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); |
ae038cb0 | 2800 | |
93311388 DE |
2801 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, |
2802 | buffer, buffer_size, | |
2803 | abfd); | |
10b3939b | 2804 | |
93311388 DE |
2805 | /* Complete the cu_header. */ |
2806 | cu.header.offset = beg_of_comp_unit - buffer; | |
2807 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; | |
ff013f42 | 2808 | |
93311388 | 2809 | cu.list_in_scope = &file_symbols; |
af703f96 | 2810 | |
328c9494 DJ |
2811 | /* If this compilation unit was already read in, free the |
2812 | cached copy in order to read it in again. This is | |
2813 | necessary because we skipped some symbols when we first | |
2814 | read in the compilation unit (see load_partial_dies). | |
2815 | This problem could be avoided, but the benefit is | |
2816 | unclear. */ | |
2817 | if (this_cu->cu != NULL) | |
2818 | free_one_cached_comp_unit (this_cu->cu); | |
2819 | ||
2820 | /* Note that this is a pointer to our stack frame, being | |
2821 | added to a global data structure. It will be cleaned up | |
2822 | in free_stack_comp_unit when we finish with this | |
2823 | compilation unit. */ | |
2824 | this_cu->cu = &cu; | |
d85a05f0 DJ |
2825 | cu.per_cu = this_cu; |
2826 | ||
93311388 DE |
2827 | /* Read the abbrevs for this compilation unit into a table. */ |
2828 | dwarf2_read_abbrevs (abfd, &cu); | |
2829 | make_cleanup (dwarf2_free_abbrev_table, &cu); | |
af703f96 | 2830 | |
93311388 | 2831 | /* Read the compilation unit die. */ |
348e048f DE |
2832 | if (this_cu->from_debug_types) |
2833 | info_ptr += 8 /*signature*/ + cu.header.offset_size; | |
d85a05f0 DJ |
2834 | init_cu_die_reader (&reader_specs, &cu); |
2835 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
2836 | &has_children); | |
93311388 | 2837 | |
348e048f DE |
2838 | if (this_cu->from_debug_types) |
2839 | { | |
2840 | /* offset,length haven't been set yet for type units. */ | |
2841 | this_cu->offset = cu.header.offset; | |
2842 | this_cu->length = cu.header.length + cu.header.initial_length_size; | |
2843 | } | |
d85a05f0 | 2844 | else if (comp_unit_die->tag == DW_TAG_partial_unit) |
c906108c | 2845 | { |
93311388 DE |
2846 | info_ptr = (beg_of_comp_unit + cu.header.length |
2847 | + cu.header.initial_length_size); | |
2848 | do_cleanups (back_to_inner); | |
2849 | return info_ptr; | |
2850 | } | |
72bf9492 | 2851 | |
93311388 | 2852 | /* Set the language we're debugging. */ |
d85a05f0 DJ |
2853 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, &cu); |
2854 | if (attr) | |
2855 | set_cu_language (DW_UNSND (attr), &cu); | |
2856 | else | |
2857 | set_cu_language (language_minimal, &cu); | |
c906108c | 2858 | |
93311388 | 2859 | /* Allocate a new partial symbol table structure. */ |
d85a05f0 | 2860 | attr = dwarf2_attr (comp_unit_die, DW_AT_name, &cu); |
93311388 | 2861 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
d85a05f0 | 2862 | (attr != NULL) ? DW_STRING (attr) : "", |
93311388 DE |
2863 | /* TEXTLOW and TEXTHIGH are set below. */ |
2864 | 0, | |
2865 | objfile->global_psymbols.next, | |
2866 | objfile->static_psymbols.next); | |
72bf9492 | 2867 | |
d85a05f0 DJ |
2868 | attr = dwarf2_attr (comp_unit_die, DW_AT_comp_dir, &cu); |
2869 | if (attr != NULL) | |
2870 | pst->dirname = DW_STRING (attr); | |
72bf9492 | 2871 | |
e38df1d0 | 2872 | pst->read_symtab_private = this_cu; |
72bf9492 | 2873 | |
93311388 | 2874 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
e7c27a73 | 2875 | |
93311388 DE |
2876 | /* Store the function that reads in the rest of the symbol table */ |
2877 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
57349743 | 2878 | |
9291a0cd | 2879 | this_cu->v.psymtab = pst; |
c906108c | 2880 | |
d85a05f0 DJ |
2881 | dwarf2_find_base_address (comp_unit_die, &cu); |
2882 | ||
93311388 DE |
2883 | /* Possibly set the default values of LOWPC and HIGHPC from |
2884 | `DW_AT_ranges'. */ | |
d85a05f0 DJ |
2885 | has_pc_info = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
2886 | &best_highpc, &cu, pst); | |
2887 | if (has_pc_info == 1 && best_lowpc < best_highpc) | |
93311388 DE |
2888 | /* Store the contiguous range if it is not empty; it can be empty for |
2889 | CUs with no code. */ | |
2890 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
d85a05f0 DJ |
2891 | best_lowpc + baseaddr, |
2892 | best_highpc + baseaddr - 1, pst); | |
93311388 DE |
2893 | |
2894 | /* Check if comp unit has_children. | |
2895 | If so, read the rest of the partial symbols from this comp unit. | |
2896 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 2897 | if (has_children) |
93311388 DE |
2898 | { |
2899 | struct partial_die_info *first_die; | |
2900 | CORE_ADDR lowpc, highpc; | |
31ffec48 | 2901 | |
93311388 DE |
2902 | lowpc = ((CORE_ADDR) -1); |
2903 | highpc = ((CORE_ADDR) 0); | |
c906108c | 2904 | |
93311388 | 2905 | first_die = load_partial_dies (abfd, buffer, info_ptr, 1, &cu); |
c906108c | 2906 | |
93311388 | 2907 | scan_partial_symbols (first_die, &lowpc, &highpc, |
d85a05f0 | 2908 | ! has_pc_info, &cu); |
57c22c6c | 2909 | |
93311388 DE |
2910 | /* If we didn't find a lowpc, set it to highpc to avoid |
2911 | complaints from `maint check'. */ | |
2912 | if (lowpc == ((CORE_ADDR) -1)) | |
2913 | lowpc = highpc; | |
10b3939b | 2914 | |
93311388 DE |
2915 | /* If the compilation unit didn't have an explicit address range, |
2916 | then use the information extracted from its child dies. */ | |
d85a05f0 | 2917 | if (! has_pc_info) |
93311388 | 2918 | { |
d85a05f0 DJ |
2919 | best_lowpc = lowpc; |
2920 | best_highpc = highpc; | |
93311388 DE |
2921 | } |
2922 | } | |
d85a05f0 DJ |
2923 | pst->textlow = best_lowpc + baseaddr; |
2924 | pst->texthigh = best_highpc + baseaddr; | |
c906108c | 2925 | |
93311388 DE |
2926 | pst->n_global_syms = objfile->global_psymbols.next - |
2927 | (objfile->global_psymbols.list + pst->globals_offset); | |
2928 | pst->n_static_syms = objfile->static_psymbols.next - | |
2929 | (objfile->static_psymbols.list + pst->statics_offset); | |
2930 | sort_pst_symbols (pst); | |
c906108c | 2931 | |
93311388 DE |
2932 | info_ptr = (beg_of_comp_unit + cu.header.length |
2933 | + cu.header.initial_length_size); | |
ae038cb0 | 2934 | |
348e048f DE |
2935 | if (this_cu->from_debug_types) |
2936 | { | |
2937 | /* It's not clear we want to do anything with stmt lists here. | |
2938 | Waiting to see what gcc ultimately does. */ | |
2939 | } | |
d85a05f0 | 2940 | else |
93311388 DE |
2941 | { |
2942 | /* Get the list of files included in the current compilation unit, | |
2943 | and build a psymtab for each of them. */ | |
d85a05f0 | 2944 | dwarf2_build_include_psymtabs (&cu, comp_unit_die, pst); |
93311388 | 2945 | } |
ae038cb0 | 2946 | |
93311388 | 2947 | do_cleanups (back_to_inner); |
ae038cb0 | 2948 | |
93311388 DE |
2949 | return info_ptr; |
2950 | } | |
ff013f42 | 2951 | |
348e048f DE |
2952 | /* Traversal function for htab_traverse_noresize. |
2953 | Process one .debug_types comp-unit. */ | |
2954 | ||
2955 | static int | |
2956 | process_type_comp_unit (void **slot, void *info) | |
2957 | { | |
2958 | struct signatured_type *entry = (struct signatured_type *) *slot; | |
2959 | struct objfile *objfile = (struct objfile *) info; | |
2960 | struct dwarf2_per_cu_data *this_cu; | |
2961 | ||
2962 | this_cu = &entry->per_cu; | |
2963 | this_cu->from_debug_types = 1; | |
2964 | ||
be391dca | 2965 | gdb_assert (dwarf2_per_objfile->types.readin); |
348e048f DE |
2966 | process_psymtab_comp_unit (objfile, this_cu, |
2967 | dwarf2_per_objfile->types.buffer, | |
2968 | dwarf2_per_objfile->types.buffer + entry->offset, | |
2969 | dwarf2_per_objfile->types.size); | |
2970 | ||
2971 | return 1; | |
2972 | } | |
2973 | ||
2974 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
2975 | Build partial symbol tables for the .debug_types comp-units. */ | |
2976 | ||
2977 | static void | |
2978 | build_type_psymtabs (struct objfile *objfile) | |
2979 | { | |
2980 | if (! create_debug_types_hash_table (objfile)) | |
2981 | return; | |
2982 | ||
2983 | htab_traverse_noresize (dwarf2_per_objfile->signatured_types, | |
2984 | process_type_comp_unit, objfile); | |
2985 | } | |
2986 | ||
60606b2c TT |
2987 | /* A cleanup function that clears objfile's psymtabs_addrmap field. */ |
2988 | ||
2989 | static void | |
2990 | psymtabs_addrmap_cleanup (void *o) | |
2991 | { | |
2992 | struct objfile *objfile = o; | |
ec61707d | 2993 | |
60606b2c TT |
2994 | objfile->psymtabs_addrmap = NULL; |
2995 | } | |
2996 | ||
93311388 DE |
2997 | /* Build the partial symbol table by doing a quick pass through the |
2998 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 2999 | |
93311388 | 3000 | static void |
c67a9c90 | 3001 | dwarf2_build_psymtabs_hard (struct objfile *objfile) |
93311388 | 3002 | { |
93311388 | 3003 | gdb_byte *info_ptr; |
60606b2c TT |
3004 | struct cleanup *back_to, *addrmap_cleanup; |
3005 | struct obstack temp_obstack; | |
93311388 | 3006 | |
be391dca | 3007 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
93311388 | 3008 | info_ptr = dwarf2_per_objfile->info.buffer; |
91c24f0a | 3009 | |
93311388 DE |
3010 | /* Any cached compilation units will be linked by the per-objfile |
3011 | read_in_chain. Make sure to free them when we're done. */ | |
3012 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
72bf9492 | 3013 | |
348e048f DE |
3014 | build_type_psymtabs (objfile); |
3015 | ||
93311388 | 3016 | create_all_comp_units (objfile); |
c906108c | 3017 | |
60606b2c TT |
3018 | /* Create a temporary address map on a temporary obstack. We later |
3019 | copy this to the final obstack. */ | |
3020 | obstack_init (&temp_obstack); | |
3021 | make_cleanup_obstack_free (&temp_obstack); | |
3022 | objfile->psymtabs_addrmap = addrmap_create_mutable (&temp_obstack); | |
3023 | addrmap_cleanup = make_cleanup (psymtabs_addrmap_cleanup, objfile); | |
72bf9492 | 3024 | |
93311388 DE |
3025 | /* Since the objects we're extracting from .debug_info vary in |
3026 | length, only the individual functions to extract them (like | |
3027 | read_comp_unit_head and load_partial_die) can really know whether | |
3028 | the buffer is large enough to hold another complete object. | |
c906108c | 3029 | |
93311388 DE |
3030 | At the moment, they don't actually check that. If .debug_info |
3031 | holds just one extra byte after the last compilation unit's dies, | |
3032 | then read_comp_unit_head will happily read off the end of the | |
3033 | buffer. read_partial_die is similarly casual. Those functions | |
3034 | should be fixed. | |
c906108c | 3035 | |
93311388 DE |
3036 | For this loop condition, simply checking whether there's any data |
3037 | left at all should be sufficient. */ | |
c906108c | 3038 | |
93311388 DE |
3039 | while (info_ptr < (dwarf2_per_objfile->info.buffer |
3040 | + dwarf2_per_objfile->info.size)) | |
3041 | { | |
3042 | struct dwarf2_per_cu_data *this_cu; | |
dd373385 | 3043 | |
93311388 DE |
3044 | this_cu = dwarf2_find_comp_unit (info_ptr - dwarf2_per_objfile->info.buffer, |
3045 | objfile); | |
aaa75496 | 3046 | |
93311388 DE |
3047 | info_ptr = process_psymtab_comp_unit (objfile, this_cu, |
3048 | dwarf2_per_objfile->info.buffer, | |
3049 | info_ptr, | |
3050 | dwarf2_per_objfile->info.size); | |
c906108c | 3051 | } |
ff013f42 JK |
3052 | |
3053 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
3054 | &objfile->objfile_obstack); | |
60606b2c | 3055 | discard_cleanups (addrmap_cleanup); |
ff013f42 | 3056 | |
ae038cb0 DJ |
3057 | do_cleanups (back_to); |
3058 | } | |
3059 | ||
93311388 | 3060 | /* Load the partial DIEs for a secondary CU into memory. */ |
ae038cb0 DJ |
3061 | |
3062 | static void | |
93311388 DE |
3063 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu, |
3064 | struct objfile *objfile) | |
ae038cb0 DJ |
3065 | { |
3066 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 3067 | gdb_byte *info_ptr, *beg_of_comp_unit; |
d85a05f0 | 3068 | struct die_info *comp_unit_die; |
ae038cb0 | 3069 | struct dwarf2_cu *cu; |
ae038cb0 | 3070 | struct cleanup *back_to; |
d85a05f0 DJ |
3071 | struct attribute *attr; |
3072 | int has_children; | |
3073 | struct die_reader_specs reader_specs; | |
ae038cb0 | 3074 | |
348e048f DE |
3075 | gdb_assert (! this_cu->from_debug_types); |
3076 | ||
be391dca | 3077 | gdb_assert (dwarf2_per_objfile->info.readin); |
dce234bc | 3078 | info_ptr = dwarf2_per_objfile->info.buffer + this_cu->offset; |
ae038cb0 DJ |
3079 | beg_of_comp_unit = info_ptr; |
3080 | ||
93311388 | 3081 | cu = alloc_one_comp_unit (objfile); |
ae038cb0 | 3082 | |
93311388 | 3083 | /* ??? Missing cleanup for CU? */ |
ae038cb0 | 3084 | |
328c9494 DJ |
3085 | /* Link this compilation unit into the compilation unit tree. */ |
3086 | this_cu->cu = cu; | |
3087 | cu->per_cu = this_cu; | |
3088 | cu->type_hash = this_cu->type_hash; | |
3089 | ||
93311388 DE |
3090 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, |
3091 | dwarf2_per_objfile->info.buffer, | |
3092 | dwarf2_per_objfile->info.size, | |
3093 | abfd); | |
ae038cb0 DJ |
3094 | |
3095 | /* Complete the cu_header. */ | |
93311388 | 3096 | cu->header.offset = this_cu->offset; |
d00adf39 | 3097 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; |
ae038cb0 DJ |
3098 | |
3099 | /* Read the abbrevs for this compilation unit into a table. */ | |
3100 | dwarf2_read_abbrevs (abfd, cu); | |
3101 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
3102 | ||
3103 | /* Read the compilation unit die. */ | |
d85a05f0 DJ |
3104 | init_cu_die_reader (&reader_specs, cu); |
3105 | info_ptr = read_full_die (&reader_specs, &comp_unit_die, info_ptr, | |
3106 | &has_children); | |
ae038cb0 DJ |
3107 | |
3108 | /* Set the language we're debugging. */ | |
d85a05f0 DJ |
3109 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); |
3110 | if (attr) | |
3111 | set_cu_language (DW_UNSND (attr), cu); | |
3112 | else | |
3113 | set_cu_language (language_minimal, cu); | |
ae038cb0 | 3114 | |
ae038cb0 DJ |
3115 | /* Check if comp unit has_children. |
3116 | If so, read the rest of the partial symbols from this comp unit. | |
3117 | If not, there's no more debug_info for this comp unit. */ | |
d85a05f0 | 3118 | if (has_children) |
93311388 | 3119 | load_partial_dies (abfd, dwarf2_per_objfile->info.buffer, info_ptr, 0, cu); |
ae038cb0 DJ |
3120 | |
3121 | do_cleanups (back_to); | |
3122 | } | |
3123 | ||
3124 | /* Create a list of all compilation units in OBJFILE. We do this only | |
3125 | if an inter-comp-unit reference is found; presumably if there is one, | |
3126 | there will be many, and one will occur early in the .debug_info section. | |
3127 | So there's no point in building this list incrementally. */ | |
3128 | ||
3129 | static void | |
3130 | create_all_comp_units (struct objfile *objfile) | |
3131 | { | |
3132 | int n_allocated; | |
3133 | int n_comp_units; | |
3134 | struct dwarf2_per_cu_data **all_comp_units; | |
be391dca TT |
3135 | gdb_byte *info_ptr; |
3136 | ||
3137 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); | |
3138 | info_ptr = dwarf2_per_objfile->info.buffer; | |
ae038cb0 DJ |
3139 | |
3140 | n_comp_units = 0; | |
3141 | n_allocated = 10; | |
3142 | all_comp_units = xmalloc (n_allocated | |
3143 | * sizeof (struct dwarf2_per_cu_data *)); | |
6e70227d | 3144 | |
dce234bc | 3145 | while (info_ptr < dwarf2_per_objfile->info.buffer + dwarf2_per_objfile->info.size) |
ae038cb0 | 3146 | { |
c764a876 | 3147 | unsigned int length, initial_length_size; |
ae038cb0 | 3148 | struct dwarf2_per_cu_data *this_cu; |
c764a876 | 3149 | unsigned int offset; |
ae038cb0 | 3150 | |
dce234bc | 3151 | offset = info_ptr - dwarf2_per_objfile->info.buffer; |
ae038cb0 DJ |
3152 | |
3153 | /* Read just enough information to find out where the next | |
3154 | compilation unit is. */ | |
c764a876 DE |
3155 | length = read_initial_length (objfile->obfd, info_ptr, |
3156 | &initial_length_size); | |
ae038cb0 DJ |
3157 | |
3158 | /* Save the compilation unit for later lookup. */ | |
3159 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
3160 | sizeof (struct dwarf2_per_cu_data)); | |
3161 | memset (this_cu, 0, sizeof (*this_cu)); | |
3162 | this_cu->offset = offset; | |
c764a876 | 3163 | this_cu->length = length + initial_length_size; |
9291a0cd | 3164 | this_cu->objfile = objfile; |
ae038cb0 DJ |
3165 | |
3166 | if (n_comp_units == n_allocated) | |
3167 | { | |
3168 | n_allocated *= 2; | |
3169 | all_comp_units = xrealloc (all_comp_units, | |
3170 | n_allocated | |
3171 | * sizeof (struct dwarf2_per_cu_data *)); | |
3172 | } | |
3173 | all_comp_units[n_comp_units++] = this_cu; | |
3174 | ||
3175 | info_ptr = info_ptr + this_cu->length; | |
3176 | } | |
3177 | ||
3178 | dwarf2_per_objfile->all_comp_units | |
3179 | = obstack_alloc (&objfile->objfile_obstack, | |
3180 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3181 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
3182 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
3183 | xfree (all_comp_units); | |
3184 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
3185 | } |
3186 | ||
5734ee8b DJ |
3187 | /* Process all loaded DIEs for compilation unit CU, starting at |
3188 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
3189 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
3190 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
3191 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
3192 | and record the covered ranges in the addrmap. */ | |
c906108c | 3193 | |
72bf9492 DJ |
3194 | static void |
3195 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 3196 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 3197 | { |
72bf9492 | 3198 | struct partial_die_info *pdi; |
c906108c | 3199 | |
91c24f0a DC |
3200 | /* Now, march along the PDI's, descending into ones which have |
3201 | interesting children but skipping the children of the other ones, | |
3202 | until we reach the end of the compilation unit. */ | |
c906108c | 3203 | |
72bf9492 | 3204 | pdi = first_die; |
91c24f0a | 3205 | |
72bf9492 DJ |
3206 | while (pdi != NULL) |
3207 | { | |
3208 | fixup_partial_die (pdi, cu); | |
c906108c | 3209 | |
f55ee35c | 3210 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
3211 | children, so we need to look at them. Ditto for anonymous |
3212 | enums. */ | |
933c6fe4 | 3213 | |
72bf9492 | 3214 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
f55ee35c | 3215 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type) |
c906108c | 3216 | { |
72bf9492 | 3217 | switch (pdi->tag) |
c906108c SS |
3218 | { |
3219 | case DW_TAG_subprogram: | |
5734ee8b | 3220 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c SS |
3221 | break; |
3222 | case DW_TAG_variable: | |
3223 | case DW_TAG_typedef: | |
91c24f0a | 3224 | case DW_TAG_union_type: |
72bf9492 | 3225 | if (!pdi->is_declaration) |
63d06c5c | 3226 | { |
72bf9492 | 3227 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
3228 | } |
3229 | break; | |
c906108c | 3230 | case DW_TAG_class_type: |
680b30c7 | 3231 | case DW_TAG_interface_type: |
c906108c | 3232 | case DW_TAG_structure_type: |
72bf9492 | 3233 | if (!pdi->is_declaration) |
c906108c | 3234 | { |
72bf9492 | 3235 | add_partial_symbol (pdi, cu); |
c906108c SS |
3236 | } |
3237 | break; | |
91c24f0a | 3238 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
3239 | if (!pdi->is_declaration) |
3240 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
3241 | break; |
3242 | case DW_TAG_base_type: | |
a02abb62 | 3243 | case DW_TAG_subrange_type: |
c906108c | 3244 | /* File scope base type definitions are added to the partial |
c5aa993b | 3245 | symbol table. */ |
72bf9492 | 3246 | add_partial_symbol (pdi, cu); |
c906108c | 3247 | break; |
d9fa45fe | 3248 | case DW_TAG_namespace: |
5734ee8b | 3249 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 3250 | break; |
5d7cb8df JK |
3251 | case DW_TAG_module: |
3252 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
3253 | break; | |
c906108c SS |
3254 | default: |
3255 | break; | |
3256 | } | |
3257 | } | |
3258 | ||
72bf9492 DJ |
3259 | /* If the die has a sibling, skip to the sibling. */ |
3260 | ||
3261 | pdi = pdi->die_sibling; | |
3262 | } | |
3263 | } | |
3264 | ||
3265 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 3266 | |
72bf9492 | 3267 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
3268 | name is concatenated with "::" and the partial DIE's name. For |
3269 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
3270 | Enumerators are an exception; they use the scope of their parent |
3271 | enumeration type, i.e. the name of the enumeration type is not | |
3272 | prepended to the enumerator. | |
91c24f0a | 3273 | |
72bf9492 DJ |
3274 | There are two complexities. One is DW_AT_specification; in this |
3275 | case "parent" means the parent of the target of the specification, | |
3276 | instead of the direct parent of the DIE. The other is compilers | |
3277 | which do not emit DW_TAG_namespace; in this case we try to guess | |
3278 | the fully qualified name of structure types from their members' | |
3279 | linkage names. This must be done using the DIE's children rather | |
3280 | than the children of any DW_AT_specification target. We only need | |
3281 | to do this for structures at the top level, i.e. if the target of | |
3282 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
3283 | have a parent. */ | |
3284 | ||
3285 | /* Compute the scope prefix associated with PDI's parent, in | |
3286 | compilation unit CU. The result will be allocated on CU's | |
3287 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
3288 | field. NULL is returned if no prefix is necessary. */ | |
3289 | static char * | |
3290 | partial_die_parent_scope (struct partial_die_info *pdi, | |
3291 | struct dwarf2_cu *cu) | |
3292 | { | |
3293 | char *grandparent_scope; | |
3294 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 3295 | |
72bf9492 DJ |
3296 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
3297 | then this means the parent of the specification DIE. */ | |
3298 | ||
3299 | real_pdi = pdi; | |
72bf9492 | 3300 | while (real_pdi->has_specification) |
10b3939b | 3301 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
3302 | |
3303 | parent = real_pdi->die_parent; | |
3304 | if (parent == NULL) | |
3305 | return NULL; | |
3306 | ||
3307 | if (parent->scope_set) | |
3308 | return parent->scope; | |
3309 | ||
3310 | fixup_partial_die (parent, cu); | |
3311 | ||
10b3939b | 3312 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 3313 | |
acebe513 UW |
3314 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
3315 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
3316 | Work around this problem here. */ | |
3317 | if (cu->language == language_cplus | |
6e70227d | 3318 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
3319 | && strcmp (parent->name, "::") == 0 |
3320 | && grandparent_scope == NULL) | |
3321 | { | |
3322 | parent->scope = NULL; | |
3323 | parent->scope_set = 1; | |
3324 | return NULL; | |
3325 | } | |
3326 | ||
72bf9492 | 3327 | if (parent->tag == DW_TAG_namespace |
f55ee35c | 3328 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
3329 | || parent->tag == DW_TAG_structure_type |
3330 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 3331 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
3332 | || parent->tag == DW_TAG_union_type |
3333 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
3334 | { |
3335 | if (grandparent_scope == NULL) | |
3336 | parent->scope = parent->name; | |
3337 | else | |
987504bb | 3338 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
f55ee35c | 3339 | parent->name, 0, cu); |
72bf9492 | 3340 | } |
ceeb3d5a | 3341 | else if (parent->tag == DW_TAG_enumerator) |
72bf9492 DJ |
3342 | /* Enumerators should not get the name of the enumeration as a prefix. */ |
3343 | parent->scope = grandparent_scope; | |
3344 | else | |
3345 | { | |
3346 | /* FIXME drow/2004-04-01: What should we be doing with | |
3347 | function-local names? For partial symbols, we should probably be | |
3348 | ignoring them. */ | |
3349 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3350 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
3351 | parent->tag, pdi->offset); |
3352 | parent->scope = grandparent_scope; | |
c906108c SS |
3353 | } |
3354 | ||
72bf9492 DJ |
3355 | parent->scope_set = 1; |
3356 | return parent->scope; | |
3357 | } | |
3358 | ||
3359 | /* Return the fully scoped name associated with PDI, from compilation unit | |
3360 | CU. The result will be allocated with malloc. */ | |
3361 | static char * | |
3362 | partial_die_full_name (struct partial_die_info *pdi, | |
3363 | struct dwarf2_cu *cu) | |
3364 | { | |
3365 | char *parent_scope; | |
3366 | ||
3367 | parent_scope = partial_die_parent_scope (pdi, cu); | |
3368 | if (parent_scope == NULL) | |
3369 | return NULL; | |
3370 | else | |
f55ee35c | 3371 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
3372 | } |
3373 | ||
3374 | static void | |
72bf9492 | 3375 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 3376 | { |
e7c27a73 | 3377 | struct objfile *objfile = cu->objfile; |
c906108c | 3378 | CORE_ADDR addr = 0; |
decbce07 | 3379 | char *actual_name = NULL; |
5c4e30ca | 3380 | const struct partial_symbol *psym = NULL; |
e142c38c | 3381 | CORE_ADDR baseaddr; |
72bf9492 | 3382 | int built_actual_name = 0; |
e142c38c DJ |
3383 | |
3384 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 3385 | |
94af9270 KS |
3386 | actual_name = partial_die_full_name (pdi, cu); |
3387 | if (actual_name) | |
3388 | built_actual_name = 1; | |
63d06c5c | 3389 | |
72bf9492 DJ |
3390 | if (actual_name == NULL) |
3391 | actual_name = pdi->name; | |
3392 | ||
c906108c SS |
3393 | switch (pdi->tag) |
3394 | { | |
3395 | case DW_TAG_subprogram: | |
2cfa0c8d | 3396 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 3397 | { |
2cfa0c8d JB |
3398 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
3399 | of the global scope. But in Ada, we want to be able to access | |
3400 | nested procedures globally. So all Ada subprograms are stored | |
3401 | in the global scope. */ | |
38d518c9 | 3402 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3403 | mst_text, objfile); */ |
38d518c9 | 3404 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3405 | built_actual_name, |
5c4e30ca DC |
3406 | VAR_DOMAIN, LOC_BLOCK, |
3407 | &objfile->global_psymbols, | |
3408 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 3409 | cu->language, objfile); |
c906108c SS |
3410 | } |
3411 | else | |
3412 | { | |
38d518c9 | 3413 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 3414 | mst_file_text, objfile); */ |
38d518c9 | 3415 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3416 | built_actual_name, |
5c4e30ca DC |
3417 | VAR_DOMAIN, LOC_BLOCK, |
3418 | &objfile->static_psymbols, | |
3419 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 3420 | cu->language, objfile); |
c906108c SS |
3421 | } |
3422 | break; | |
3423 | case DW_TAG_variable: | |
3424 | if (pdi->is_external) | |
3425 | { | |
3426 | /* Global Variable. | |
3427 | Don't enter into the minimal symbol tables as there is | |
3428 | a minimal symbol table entry from the ELF symbols already. | |
3429 | Enter into partial symbol table if it has a location | |
3430 | descriptor or a type. | |
3431 | If the location descriptor is missing, new_symbol will create | |
3432 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
3433 | be determined from the minimal symbol table whenever the variable | |
3434 | is referenced. | |
3435 | The address for the partial symbol table entry is not | |
3436 | used by GDB, but it comes in handy for debugging partial symbol | |
3437 | table building. */ | |
3438 | ||
3439 | if (pdi->locdesc) | |
e7c27a73 | 3440 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 3441 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 3442 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3443 | built_actual_name, |
5c4e30ca DC |
3444 | VAR_DOMAIN, LOC_STATIC, |
3445 | &objfile->global_psymbols, | |
3446 | 0, addr + baseaddr, | |
e142c38c | 3447 | cu->language, objfile); |
c906108c SS |
3448 | } |
3449 | else | |
3450 | { | |
3451 | /* Static Variable. Skip symbols without location descriptors. */ | |
3452 | if (pdi->locdesc == NULL) | |
decbce07 MS |
3453 | { |
3454 | if (built_actual_name) | |
3455 | xfree (actual_name); | |
3456 | return; | |
3457 | } | |
e7c27a73 | 3458 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 3459 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 3460 | mst_file_data, objfile); */ |
38d518c9 | 3461 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3462 | built_actual_name, |
5c4e30ca DC |
3463 | VAR_DOMAIN, LOC_STATIC, |
3464 | &objfile->static_psymbols, | |
3465 | 0, addr + baseaddr, | |
e142c38c | 3466 | cu->language, objfile); |
c906108c SS |
3467 | } |
3468 | break; | |
3469 | case DW_TAG_typedef: | |
3470 | case DW_TAG_base_type: | |
a02abb62 | 3471 | case DW_TAG_subrange_type: |
38d518c9 | 3472 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3473 | built_actual_name, |
176620f1 | 3474 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 3475 | &objfile->static_psymbols, |
e142c38c | 3476 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3477 | break; |
72bf9492 DJ |
3478 | case DW_TAG_namespace: |
3479 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
04a679b8 | 3480 | built_actual_name, |
72bf9492 DJ |
3481 | VAR_DOMAIN, LOC_TYPEDEF, |
3482 | &objfile->global_psymbols, | |
3483 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
3484 | break; | |
c906108c | 3485 | case DW_TAG_class_type: |
680b30c7 | 3486 | case DW_TAG_interface_type: |
c906108c SS |
3487 | case DW_TAG_structure_type: |
3488 | case DW_TAG_union_type: | |
3489 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
3490 | /* Skip external references. The DWARF standard says in the section |
3491 | about "Structure, Union, and Class Type Entries": "An incomplete | |
3492 | structure, union or class type is represented by a structure, | |
3493 | union or class entry that does not have a byte size attribute | |
3494 | and that has a DW_AT_declaration attribute." */ | |
3495 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
3496 | { |
3497 | if (built_actual_name) | |
3498 | xfree (actual_name); | |
3499 | return; | |
3500 | } | |
fa4028e9 | 3501 | |
63d06c5c DC |
3502 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
3503 | static vs. global. */ | |
38d518c9 | 3504 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3505 | built_actual_name, |
176620f1 | 3506 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
3507 | (cu->language == language_cplus |
3508 | || cu->language == language_java) | |
63d06c5c DC |
3509 | ? &objfile->global_psymbols |
3510 | : &objfile->static_psymbols, | |
e142c38c | 3511 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 3512 | |
c906108c SS |
3513 | break; |
3514 | case DW_TAG_enumerator: | |
38d518c9 | 3515 | add_psymbol_to_list (actual_name, strlen (actual_name), |
04a679b8 | 3516 | built_actual_name, |
176620f1 | 3517 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
3518 | (cu->language == language_cplus |
3519 | || cu->language == language_java) | |
f6fe98ef DJ |
3520 | ? &objfile->global_psymbols |
3521 | : &objfile->static_psymbols, | |
e142c38c | 3522 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
3523 | break; |
3524 | default: | |
3525 | break; | |
3526 | } | |
5c4e30ca | 3527 | |
72bf9492 DJ |
3528 | if (built_actual_name) |
3529 | xfree (actual_name); | |
c906108c SS |
3530 | } |
3531 | ||
5c4e30ca DC |
3532 | /* Read a partial die corresponding to a namespace; also, add a symbol |
3533 | corresponding to that namespace to the symbol table. NAMESPACE is | |
3534 | the name of the enclosing namespace. */ | |
91c24f0a | 3535 | |
72bf9492 DJ |
3536 | static void |
3537 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 3538 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 3539 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 3540 | { |
72bf9492 | 3541 | /* Add a symbol for the namespace. */ |
e7c27a73 | 3542 | |
72bf9492 | 3543 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
3544 | |
3545 | /* Now scan partial symbols in that namespace. */ | |
3546 | ||
91c24f0a | 3547 | if (pdi->has_children) |
5734ee8b | 3548 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
3549 | } |
3550 | ||
5d7cb8df JK |
3551 | /* Read a partial die corresponding to a Fortran module. */ |
3552 | ||
3553 | static void | |
3554 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
3555 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
3556 | { | |
f55ee35c | 3557 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
3558 | |
3559 | if (pdi->has_children) | |
3560 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
3561 | } | |
3562 | ||
bc30ff58 JB |
3563 | /* Read a partial die corresponding to a subprogram and create a partial |
3564 | symbol for that subprogram. When the CU language allows it, this | |
3565 | routine also defines a partial symbol for each nested subprogram | |
3566 | that this subprogram contains. | |
6e70227d | 3567 | |
bc30ff58 JB |
3568 | DIE my also be a lexical block, in which case we simply search |
3569 | recursively for suprograms defined inside that lexical block. | |
3570 | Again, this is only performed when the CU language allows this | |
3571 | type of definitions. */ | |
3572 | ||
3573 | static void | |
3574 | add_partial_subprogram (struct partial_die_info *pdi, | |
3575 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 3576 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
3577 | { |
3578 | if (pdi->tag == DW_TAG_subprogram) | |
3579 | { | |
3580 | if (pdi->has_pc_info) | |
3581 | { | |
3582 | if (pdi->lowpc < *lowpc) | |
3583 | *lowpc = pdi->lowpc; | |
3584 | if (pdi->highpc > *highpc) | |
3585 | *highpc = pdi->highpc; | |
5734ee8b DJ |
3586 | if (need_pc) |
3587 | { | |
3588 | CORE_ADDR baseaddr; | |
3589 | struct objfile *objfile = cu->objfile; | |
3590 | ||
3591 | baseaddr = ANOFFSET (objfile->section_offsets, | |
3592 | SECT_OFF_TEXT (objfile)); | |
3593 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
01637564 DE |
3594 | pdi->lowpc + baseaddr, |
3595 | pdi->highpc - 1 + baseaddr, | |
9291a0cd | 3596 | cu->per_cu->v.psymtab); |
5734ee8b | 3597 | } |
bc30ff58 | 3598 | if (!pdi->is_declaration) |
e8d05480 JB |
3599 | /* Ignore subprogram DIEs that do not have a name, they are |
3600 | illegal. Do not emit a complaint at this point, we will | |
3601 | do so when we convert this psymtab into a symtab. */ | |
3602 | if (pdi->name) | |
3603 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
3604 | } |
3605 | } | |
6e70227d | 3606 | |
bc30ff58 JB |
3607 | if (! pdi->has_children) |
3608 | return; | |
3609 | ||
3610 | if (cu->language == language_ada) | |
3611 | { | |
3612 | pdi = pdi->die_child; | |
3613 | while (pdi != NULL) | |
3614 | { | |
3615 | fixup_partial_die (pdi, cu); | |
3616 | if (pdi->tag == DW_TAG_subprogram | |
3617 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 3618 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
3619 | pdi = pdi->die_sibling; |
3620 | } | |
3621 | } | |
3622 | } | |
3623 | ||
72bf9492 DJ |
3624 | /* See if we can figure out if the class lives in a namespace. We do |
3625 | this by looking for a member function; its demangled name will | |
3626 | contain namespace info, if there is any. */ | |
63d06c5c | 3627 | |
72bf9492 DJ |
3628 | static void |
3629 | guess_structure_name (struct partial_die_info *struct_pdi, | |
3630 | struct dwarf2_cu *cu) | |
63d06c5c | 3631 | { |
987504bb JJ |
3632 | if ((cu->language == language_cplus |
3633 | || cu->language == language_java) | |
72bf9492 | 3634 | && cu->has_namespace_info == 0 |
63d06c5c DC |
3635 | && struct_pdi->has_children) |
3636 | { | |
63d06c5c DC |
3637 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
3638 | what template types look like, because the demangler | |
3639 | frequently doesn't give the same name as the debug info. We | |
3640 | could fix this by only using the demangled name to get the | |
134d01f1 | 3641 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 3642 | |
72bf9492 | 3643 | struct partial_die_info *real_pdi; |
5d51ca54 | 3644 | |
72bf9492 DJ |
3645 | /* If this DIE (this DIE's specification, if any) has a parent, then |
3646 | we should not do this. We'll prepend the parent's fully qualified | |
3647 | name when we create the partial symbol. */ | |
5d51ca54 | 3648 | |
72bf9492 | 3649 | real_pdi = struct_pdi; |
72bf9492 | 3650 | while (real_pdi->has_specification) |
10b3939b | 3651 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 3652 | |
72bf9492 DJ |
3653 | if (real_pdi->die_parent != NULL) |
3654 | return; | |
63d06c5c | 3655 | } |
63d06c5c DC |
3656 | } |
3657 | ||
91c24f0a DC |
3658 | /* Read a partial die corresponding to an enumeration type. */ |
3659 | ||
72bf9492 DJ |
3660 | static void |
3661 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
3662 | struct dwarf2_cu *cu) | |
91c24f0a | 3663 | { |
72bf9492 | 3664 | struct partial_die_info *pdi; |
91c24f0a DC |
3665 | |
3666 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
3667 | add_partial_symbol (enum_pdi, cu); |
3668 | ||
3669 | pdi = enum_pdi->die_child; | |
3670 | while (pdi) | |
91c24f0a | 3671 | { |
72bf9492 | 3672 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 3673 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 3674 | else |
72bf9492 DJ |
3675 | add_partial_symbol (pdi, cu); |
3676 | pdi = pdi->die_sibling; | |
91c24f0a | 3677 | } |
91c24f0a DC |
3678 | } |
3679 | ||
4bb7a0a7 DJ |
3680 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
3681 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
3682 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
3683 | the initial number. */ | |
3684 | ||
3685 | static struct abbrev_info * | |
fe1b8b76 | 3686 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 3687 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
3688 | { |
3689 | bfd *abfd = cu->objfile->obfd; | |
3690 | unsigned int abbrev_number; | |
3691 | struct abbrev_info *abbrev; | |
3692 | ||
3693 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
3694 | ||
3695 | if (abbrev_number == 0) | |
3696 | return NULL; | |
3697 | ||
3698 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
3699 | if (!abbrev) | |
3700 | { | |
8a3fe4f8 | 3701 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
3702 | bfd_get_filename (abfd)); |
3703 | } | |
3704 | ||
3705 | return abbrev; | |
3706 | } | |
3707 | ||
93311388 DE |
3708 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
3709 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
3710 | DIE. Any children of the skipped DIEs will also be skipped. */ |
3711 | ||
fe1b8b76 | 3712 | static gdb_byte * |
93311388 | 3713 | skip_children (gdb_byte *buffer, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
3714 | { |
3715 | struct abbrev_info *abbrev; | |
3716 | unsigned int bytes_read; | |
3717 | ||
3718 | while (1) | |
3719 | { | |
3720 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
3721 | if (abbrev == NULL) | |
3722 | return info_ptr + bytes_read; | |
3723 | else | |
93311388 | 3724 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
4bb7a0a7 DJ |
3725 | } |
3726 | } | |
3727 | ||
93311388 DE |
3728 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
3729 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
3730 | abbrev corresponding to that skipped uleb128 should be passed in |
3731 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
3732 | children. */ | |
3733 | ||
fe1b8b76 | 3734 | static gdb_byte * |
93311388 DE |
3735 | skip_one_die (gdb_byte *buffer, gdb_byte *info_ptr, |
3736 | struct abbrev_info *abbrev, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
3737 | { |
3738 | unsigned int bytes_read; | |
3739 | struct attribute attr; | |
3740 | bfd *abfd = cu->objfile->obfd; | |
3741 | unsigned int form, i; | |
3742 | ||
3743 | for (i = 0; i < abbrev->num_attrs; i++) | |
3744 | { | |
3745 | /* The only abbrev we care about is DW_AT_sibling. */ | |
3746 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
3747 | { | |
3748 | read_attribute (&attr, &abbrev->attrs[i], | |
3749 | abfd, info_ptr, cu); | |
3750 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 3751 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 3752 | else |
93311388 | 3753 | return buffer + dwarf2_get_ref_die_offset (&attr); |
4bb7a0a7 DJ |
3754 | } |
3755 | ||
3756 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
3757 | form = abbrev->attrs[i].form; | |
3758 | skip_attribute: | |
3759 | switch (form) | |
3760 | { | |
4bb7a0a7 | 3761 | case DW_FORM_ref_addr: |
ae411497 TT |
3762 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
3763 | and later it is offset sized. */ | |
3764 | if (cu->header.version == 2) | |
3765 | info_ptr += cu->header.addr_size; | |
3766 | else | |
3767 | info_ptr += cu->header.offset_size; | |
3768 | break; | |
3769 | case DW_FORM_addr: | |
4bb7a0a7 DJ |
3770 | info_ptr += cu->header.addr_size; |
3771 | break; | |
3772 | case DW_FORM_data1: | |
3773 | case DW_FORM_ref1: | |
3774 | case DW_FORM_flag: | |
3775 | info_ptr += 1; | |
3776 | break; | |
2dc7f7b3 TT |
3777 | case DW_FORM_flag_present: |
3778 | break; | |
4bb7a0a7 DJ |
3779 | case DW_FORM_data2: |
3780 | case DW_FORM_ref2: | |
3781 | info_ptr += 2; | |
3782 | break; | |
3783 | case DW_FORM_data4: | |
3784 | case DW_FORM_ref4: | |
3785 | info_ptr += 4; | |
3786 | break; | |
3787 | case DW_FORM_data8: | |
3788 | case DW_FORM_ref8: | |
348e048f | 3789 | case DW_FORM_sig8: |
4bb7a0a7 DJ |
3790 | info_ptr += 8; |
3791 | break; | |
3792 | case DW_FORM_string: | |
3793 | read_string (abfd, info_ptr, &bytes_read); | |
3794 | info_ptr += bytes_read; | |
3795 | break; | |
2dc7f7b3 | 3796 | case DW_FORM_sec_offset: |
4bb7a0a7 DJ |
3797 | case DW_FORM_strp: |
3798 | info_ptr += cu->header.offset_size; | |
3799 | break; | |
2dc7f7b3 | 3800 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
3801 | case DW_FORM_block: |
3802 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3803 | info_ptr += bytes_read; | |
3804 | break; | |
3805 | case DW_FORM_block1: | |
3806 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
3807 | break; | |
3808 | case DW_FORM_block2: | |
3809 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
3810 | break; | |
3811 | case DW_FORM_block4: | |
3812 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
3813 | break; | |
3814 | case DW_FORM_sdata: | |
3815 | case DW_FORM_udata: | |
3816 | case DW_FORM_ref_udata: | |
3817 | info_ptr = skip_leb128 (abfd, info_ptr); | |
3818 | break; | |
3819 | case DW_FORM_indirect: | |
3820 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
3821 | info_ptr += bytes_read; | |
3822 | /* We need to continue parsing from here, so just go back to | |
3823 | the top. */ | |
3824 | goto skip_attribute; | |
3825 | ||
3826 | default: | |
8a3fe4f8 | 3827 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
3828 | dwarf_form_name (form), |
3829 | bfd_get_filename (abfd)); | |
3830 | } | |
3831 | } | |
3832 | ||
3833 | if (abbrev->has_children) | |
93311388 | 3834 | return skip_children (buffer, info_ptr, cu); |
4bb7a0a7 DJ |
3835 | else |
3836 | return info_ptr; | |
3837 | } | |
3838 | ||
93311388 DE |
3839 | /* Locate ORIG_PDI's sibling. |
3840 | INFO_PTR should point to the start of the next DIE after ORIG_PDI | |
3841 | in BUFFER. */ | |
91c24f0a | 3842 | |
fe1b8b76 | 3843 | static gdb_byte * |
93311388 DE |
3844 | locate_pdi_sibling (struct partial_die_info *orig_pdi, |
3845 | gdb_byte *buffer, gdb_byte *info_ptr, | |
e7c27a73 | 3846 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
3847 | { |
3848 | /* Do we know the sibling already? */ | |
72bf9492 | 3849 | |
91c24f0a DC |
3850 | if (orig_pdi->sibling) |
3851 | return orig_pdi->sibling; | |
3852 | ||
3853 | /* Are there any children to deal with? */ | |
3854 | ||
3855 | if (!orig_pdi->has_children) | |
3856 | return info_ptr; | |
3857 | ||
4bb7a0a7 | 3858 | /* Skip the children the long way. */ |
91c24f0a | 3859 | |
93311388 | 3860 | return skip_children (buffer, info_ptr, cu); |
91c24f0a DC |
3861 | } |
3862 | ||
c906108c SS |
3863 | /* Expand this partial symbol table into a full symbol table. */ |
3864 | ||
3865 | static void | |
fba45db2 | 3866 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c | 3867 | { |
c906108c SS |
3868 | if (pst != NULL) |
3869 | { | |
3870 | if (pst->readin) | |
3871 | { | |
8a3fe4f8 | 3872 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
3873 | } |
3874 | else | |
3875 | { | |
3876 | if (info_verbose) | |
3877 | { | |
a3f17187 | 3878 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
3879 | gdb_flush (gdb_stdout); |
3880 | } | |
3881 | ||
10b3939b DJ |
3882 | /* Restore our global data. */ |
3883 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
3884 | dwarf2_objfile_data_key); | |
3885 | ||
b2ab525c KB |
3886 | /* If this psymtab is constructed from a debug-only objfile, the |
3887 | has_section_at_zero flag will not necessarily be correct. We | |
3888 | can get the correct value for this flag by looking at the data | |
3889 | associated with the (presumably stripped) associated objfile. */ | |
3890 | if (pst->objfile->separate_debug_objfile_backlink) | |
3891 | { | |
3892 | struct dwarf2_per_objfile *dpo_backlink | |
3893 | = objfile_data (pst->objfile->separate_debug_objfile_backlink, | |
3894 | dwarf2_objfile_data_key); | |
9a619af0 | 3895 | |
b2ab525c KB |
3896 | dwarf2_per_objfile->has_section_at_zero |
3897 | = dpo_backlink->has_section_at_zero; | |
3898 | } | |
3899 | ||
c906108c SS |
3900 | psymtab_to_symtab_1 (pst); |
3901 | ||
3902 | /* Finish up the debug error message. */ | |
3903 | if (info_verbose) | |
a3f17187 | 3904 | printf_filtered (_("done.\n")); |
c906108c SS |
3905 | } |
3906 | } | |
3907 | } | |
3908 | ||
10b3939b DJ |
3909 | /* Add PER_CU to the queue. */ |
3910 | ||
3911 | static void | |
03dd20cc | 3912 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b DJ |
3913 | { |
3914 | struct dwarf2_queue_item *item; | |
3915 | ||
3916 | per_cu->queued = 1; | |
3917 | item = xmalloc (sizeof (*item)); | |
3918 | item->per_cu = per_cu; | |
3919 | item->next = NULL; | |
3920 | ||
3921 | if (dwarf2_queue == NULL) | |
3922 | dwarf2_queue = item; | |
3923 | else | |
3924 | dwarf2_queue_tail->next = item; | |
3925 | ||
3926 | dwarf2_queue_tail = item; | |
3927 | } | |
3928 | ||
3929 | /* Process the queue. */ | |
3930 | ||
3931 | static void | |
3932 | process_queue (struct objfile *objfile) | |
3933 | { | |
3934 | struct dwarf2_queue_item *item, *next_item; | |
3935 | ||
03dd20cc DJ |
3936 | /* The queue starts out with one item, but following a DIE reference |
3937 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
3938 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
3939 | { | |
9291a0cd TT |
3940 | if (dwarf2_per_objfile->using_index |
3941 | ? !item->per_cu->v.quick->symtab | |
3942 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
10b3939b DJ |
3943 | process_full_comp_unit (item->per_cu); |
3944 | ||
3945 | item->per_cu->queued = 0; | |
3946 | next_item = item->next; | |
3947 | xfree (item); | |
3948 | } | |
3949 | ||
3950 | dwarf2_queue_tail = NULL; | |
3951 | } | |
3952 | ||
3953 | /* Free all allocated queue entries. This function only releases anything if | |
3954 | an error was thrown; if the queue was processed then it would have been | |
3955 | freed as we went along. */ | |
3956 | ||
3957 | static void | |
3958 | dwarf2_release_queue (void *dummy) | |
3959 | { | |
3960 | struct dwarf2_queue_item *item, *last; | |
3961 | ||
3962 | item = dwarf2_queue; | |
3963 | while (item) | |
3964 | { | |
3965 | /* Anything still marked queued is likely to be in an | |
3966 | inconsistent state, so discard it. */ | |
3967 | if (item->per_cu->queued) | |
3968 | { | |
3969 | if (item->per_cu->cu != NULL) | |
3970 | free_one_cached_comp_unit (item->per_cu->cu); | |
3971 | item->per_cu->queued = 0; | |
3972 | } | |
3973 | ||
3974 | last = item; | |
3975 | item = item->next; | |
3976 | xfree (last); | |
3977 | } | |
3978 | ||
3979 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
3980 | } | |
3981 | ||
3982 | /* Read in full symbols for PST, and anything it depends on. */ | |
3983 | ||
c906108c | 3984 | static void |
fba45db2 | 3985 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 3986 | { |
10b3939b | 3987 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 3988 | struct cleanup *back_to; |
aaa75496 JB |
3989 | int i; |
3990 | ||
3991 | for (i = 0; i < pst->number_of_dependencies; i++) | |
3992 | if (!pst->dependencies[i]->readin) | |
3993 | { | |
3994 | /* Inform about additional files that need to be read in. */ | |
3995 | if (info_verbose) | |
3996 | { | |
a3f17187 | 3997 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
3998 | fputs_filtered (" ", gdb_stdout); |
3999 | wrap_here (""); | |
4000 | fputs_filtered ("and ", gdb_stdout); | |
4001 | wrap_here (""); | |
4002 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
4003 | wrap_here (""); /* Flush output */ | |
4004 | gdb_flush (gdb_stdout); | |
4005 | } | |
4006 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
4007 | } | |
4008 | ||
e38df1d0 | 4009 | per_cu = pst->read_symtab_private; |
10b3939b DJ |
4010 | |
4011 | if (per_cu == NULL) | |
aaa75496 JB |
4012 | { |
4013 | /* It's an include file, no symbols to read for it. | |
4014 | Everything is in the parent symtab. */ | |
4015 | pst->readin = 1; | |
4016 | return; | |
4017 | } | |
c906108c | 4018 | |
9291a0cd | 4019 | dw2_do_instantiate_symtab (pst->objfile, per_cu); |
10b3939b DJ |
4020 | } |
4021 | ||
93311388 | 4022 | /* Load the DIEs associated with PER_CU into memory. */ |
10b3939b | 4023 | |
93311388 | 4024 | static void |
31ffec48 | 4025 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 4026 | { |
31ffec48 | 4027 | bfd *abfd = objfile->obfd; |
10b3939b | 4028 | struct dwarf2_cu *cu; |
c764a876 | 4029 | unsigned int offset; |
93311388 | 4030 | gdb_byte *info_ptr, *beg_of_comp_unit; |
10b3939b DJ |
4031 | struct cleanup *back_to, *free_cu_cleanup; |
4032 | struct attribute *attr; | |
6502dd73 | 4033 | |
348e048f DE |
4034 | gdb_assert (! per_cu->from_debug_types); |
4035 | ||
c906108c | 4036 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 4037 | offset = per_cu->offset; |
6502dd73 | 4038 | |
be391dca | 4039 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
dce234bc | 4040 | info_ptr = dwarf2_per_objfile->info.buffer + offset; |
93311388 | 4041 | beg_of_comp_unit = info_ptr; |
63d06c5c | 4042 | |
93311388 | 4043 | cu = alloc_one_comp_unit (objfile); |
c906108c | 4044 | |
10b3939b DJ |
4045 | /* If an error occurs while loading, release our storage. */ |
4046 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 4047 | |
93311388 | 4048 | /* Read in the comp_unit header. */ |
10b3939b | 4049 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c | 4050 | |
93311388 DE |
4051 | /* Complete the cu_header. */ |
4052 | cu->header.offset = offset; | |
4053 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; | |
4054 | ||
4055 | /* Read the abbrevs for this compilation unit. */ | |
10b3939b DJ |
4056 | dwarf2_read_abbrevs (abfd, cu); |
4057 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
4058 | ||
93311388 | 4059 | /* Link this compilation unit into the compilation unit tree. */ |
10b3939b | 4060 | per_cu->cu = cu; |
93311388 | 4061 | cu->per_cu = per_cu; |
f792889a | 4062 | cu->type_hash = per_cu->type_hash; |
e142c38c | 4063 | |
93311388 | 4064 | cu->dies = read_comp_unit (info_ptr, cu); |
10b3939b DJ |
4065 | |
4066 | /* We try not to read any attributes in this function, because not | |
4067 | all objfiles needed for references have been loaded yet, and symbol | |
4068 | table processing isn't initialized. But we have to set the CU language, | |
4069 | or we won't be able to build types correctly. */ | |
4070 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
4071 | if (attr) | |
4072 | set_cu_language (DW_UNSND (attr), cu); | |
4073 | else | |
4074 | set_cu_language (language_minimal, cu); | |
4075 | ||
a6c727b2 DJ |
4076 | /* Similarly, if we do not read the producer, we can not apply |
4077 | producer-specific interpretation. */ | |
4078 | attr = dwarf2_attr (cu->dies, DW_AT_producer, cu); | |
4079 | if (attr) | |
4080 | cu->producer = DW_STRING (attr); | |
4081 | ||
348e048f DE |
4082 | /* Link this CU into read_in_chain. */ |
4083 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
4084 | dwarf2_per_objfile->read_in_chain = per_cu; | |
4085 | ||
10b3939b | 4086 | do_cleanups (back_to); |
e142c38c | 4087 | |
10b3939b DJ |
4088 | /* We've successfully allocated this compilation unit. Let our caller |
4089 | clean it up when finished with it. */ | |
4090 | discard_cleanups (free_cu_cleanup); | |
10b3939b DJ |
4091 | } |
4092 | ||
4093 | /* Generate full symbol information for PST and CU, whose DIEs have | |
4094 | already been loaded into memory. */ | |
4095 | ||
4096 | static void | |
4097 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
4098 | { | |
10b3939b | 4099 | struct dwarf2_cu *cu = per_cu->cu; |
9291a0cd | 4100 | struct objfile *objfile = per_cu->objfile; |
10b3939b DJ |
4101 | CORE_ADDR lowpc, highpc; |
4102 | struct symtab *symtab; | |
4103 | struct cleanup *back_to; | |
10b3939b DJ |
4104 | CORE_ADDR baseaddr; |
4105 | ||
4106 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
4107 | ||
10b3939b DJ |
4108 | buildsym_init (); |
4109 | back_to = make_cleanup (really_free_pendings, NULL); | |
4110 | ||
4111 | cu->list_in_scope = &file_symbols; | |
c906108c | 4112 | |
d85a05f0 | 4113 | dwarf2_find_base_address (cu->dies, cu); |
0d53c4c4 | 4114 | |
c906108c | 4115 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 4116 | process_die (cu->dies, cu); |
c906108c | 4117 | |
fae299cd DC |
4118 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
4119 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
4120 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 4121 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 4122 | |
613e1657 | 4123 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
4124 | |
4125 | /* Set symtab language to language from DW_AT_language. | |
4126 | If the compilation is from a C file generated by language preprocessors, | |
4127 | do not set the language if it was already deduced by start_subfile. */ | |
4128 | if (symtab != NULL | |
10b3939b | 4129 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 4130 | { |
10b3939b | 4131 | symtab->language = cu->language; |
c906108c | 4132 | } |
9291a0cd TT |
4133 | |
4134 | if (dwarf2_per_objfile->using_index) | |
4135 | per_cu->v.quick->symtab = symtab; | |
4136 | else | |
4137 | { | |
4138 | struct partial_symtab *pst = per_cu->v.psymtab; | |
4139 | pst->symtab = symtab; | |
4140 | pst->readin = 1; | |
4141 | } | |
c906108c SS |
4142 | |
4143 | do_cleanups (back_to); | |
4144 | } | |
4145 | ||
4146 | /* Process a die and its children. */ | |
4147 | ||
4148 | static void | |
e7c27a73 | 4149 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4150 | { |
4151 | switch (die->tag) | |
4152 | { | |
4153 | case DW_TAG_padding: | |
4154 | break; | |
4155 | case DW_TAG_compile_unit: | |
e7c27a73 | 4156 | read_file_scope (die, cu); |
c906108c | 4157 | break; |
348e048f DE |
4158 | case DW_TAG_type_unit: |
4159 | read_type_unit_scope (die, cu); | |
4160 | break; | |
c906108c | 4161 | case DW_TAG_subprogram: |
c906108c | 4162 | case DW_TAG_inlined_subroutine: |
edb3359d | 4163 | read_func_scope (die, cu); |
c906108c SS |
4164 | break; |
4165 | case DW_TAG_lexical_block: | |
14898363 L |
4166 | case DW_TAG_try_block: |
4167 | case DW_TAG_catch_block: | |
e7c27a73 | 4168 | read_lexical_block_scope (die, cu); |
c906108c SS |
4169 | break; |
4170 | case DW_TAG_class_type: | |
680b30c7 | 4171 | case DW_TAG_interface_type: |
c906108c SS |
4172 | case DW_TAG_structure_type: |
4173 | case DW_TAG_union_type: | |
134d01f1 | 4174 | process_structure_scope (die, cu); |
c906108c SS |
4175 | break; |
4176 | case DW_TAG_enumeration_type: | |
134d01f1 | 4177 | process_enumeration_scope (die, cu); |
c906108c | 4178 | break; |
134d01f1 | 4179 | |
f792889a DJ |
4180 | /* These dies have a type, but processing them does not create |
4181 | a symbol or recurse to process the children. Therefore we can | |
4182 | read them on-demand through read_type_die. */ | |
c906108c | 4183 | case DW_TAG_subroutine_type: |
72019c9c | 4184 | case DW_TAG_set_type: |
c906108c | 4185 | case DW_TAG_array_type: |
c906108c | 4186 | case DW_TAG_pointer_type: |
c906108c | 4187 | case DW_TAG_ptr_to_member_type: |
c906108c | 4188 | case DW_TAG_reference_type: |
c906108c | 4189 | case DW_TAG_string_type: |
c906108c | 4190 | break; |
134d01f1 | 4191 | |
c906108c | 4192 | case DW_TAG_base_type: |
a02abb62 | 4193 | case DW_TAG_subrange_type: |
cb249c71 | 4194 | case DW_TAG_typedef: |
134d01f1 DJ |
4195 | /* Add a typedef symbol for the type definition, if it has a |
4196 | DW_AT_name. */ | |
f792889a | 4197 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 4198 | break; |
c906108c | 4199 | case DW_TAG_common_block: |
e7c27a73 | 4200 | read_common_block (die, cu); |
c906108c SS |
4201 | break; |
4202 | case DW_TAG_common_inclusion: | |
4203 | break; | |
d9fa45fe | 4204 | case DW_TAG_namespace: |
63d06c5c | 4205 | processing_has_namespace_info = 1; |
e7c27a73 | 4206 | read_namespace (die, cu); |
d9fa45fe | 4207 | break; |
5d7cb8df | 4208 | case DW_TAG_module: |
f55ee35c | 4209 | processing_has_namespace_info = 1; |
5d7cb8df JK |
4210 | read_module (die, cu); |
4211 | break; | |
d9fa45fe DC |
4212 | case DW_TAG_imported_declaration: |
4213 | case DW_TAG_imported_module: | |
63d06c5c | 4214 | processing_has_namespace_info = 1; |
27aa8d6a SW |
4215 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
4216 | || cu->language != language_fortran)) | |
4217 | complaint (&symfile_complaints, _("Tag '%s' has unexpected children"), | |
4218 | dwarf_tag_name (die->tag)); | |
4219 | read_import_statement (die, cu); | |
d9fa45fe | 4220 | break; |
c906108c | 4221 | default: |
e7c27a73 | 4222 | new_symbol (die, NULL, cu); |
c906108c SS |
4223 | break; |
4224 | } | |
4225 | } | |
4226 | ||
94af9270 KS |
4227 | /* A helper function for dwarf2_compute_name which determines whether DIE |
4228 | needs to have the name of the scope prepended to the name listed in the | |
4229 | die. */ | |
4230 | ||
4231 | static int | |
4232 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
4233 | { | |
1c809c68 TT |
4234 | struct attribute *attr; |
4235 | ||
94af9270 KS |
4236 | switch (die->tag) |
4237 | { | |
4238 | case DW_TAG_namespace: | |
4239 | case DW_TAG_typedef: | |
4240 | case DW_TAG_class_type: | |
4241 | case DW_TAG_interface_type: | |
4242 | case DW_TAG_structure_type: | |
4243 | case DW_TAG_union_type: | |
4244 | case DW_TAG_enumeration_type: | |
4245 | case DW_TAG_enumerator: | |
4246 | case DW_TAG_subprogram: | |
4247 | case DW_TAG_member: | |
4248 | return 1; | |
4249 | ||
4250 | case DW_TAG_variable: | |
4251 | /* We only need to prefix "globally" visible variables. These include | |
4252 | any variable marked with DW_AT_external or any variable that | |
4253 | lives in a namespace. [Variables in anonymous namespaces | |
4254 | require prefixing, but they are not DW_AT_external.] */ | |
4255 | ||
4256 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
4257 | { | |
4258 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 4259 | |
94af9270 KS |
4260 | return die_needs_namespace (die_specification (die, &spec_cu), |
4261 | spec_cu); | |
4262 | } | |
4263 | ||
1c809c68 | 4264 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
4265 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
4266 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
4267 | return 0; |
4268 | /* A variable in a lexical block of some kind does not need a | |
4269 | namespace, even though in C++ such variables may be external | |
4270 | and have a mangled name. */ | |
4271 | if (die->parent->tag == DW_TAG_lexical_block | |
4272 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
4273 | || die->parent->tag == DW_TAG_catch_block |
4274 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
4275 | return 0; |
4276 | return 1; | |
94af9270 KS |
4277 | |
4278 | default: | |
4279 | return 0; | |
4280 | } | |
4281 | } | |
4282 | ||
4283 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, | |
4284 | compute the physname for the object, which include a method's | |
4285 | formal parameters (C++/Java) and return type (Java). | |
4286 | ||
af6b7be1 JB |
4287 | For Ada, return the DIE's linkage name rather than the fully qualified |
4288 | name. PHYSNAME is ignored.. | |
4289 | ||
94af9270 KS |
4290 | The result is allocated on the objfile_obstack and canonicalized. */ |
4291 | ||
4292 | static const char * | |
4293 | dwarf2_compute_name (char *name, struct die_info *die, struct dwarf2_cu *cu, | |
4294 | int physname) | |
4295 | { | |
4296 | if (name == NULL) | |
4297 | name = dwarf2_name (die, cu); | |
4298 | ||
f55ee35c JK |
4299 | /* For Fortran GDB prefers DW_AT_*linkage_name if present but otherwise |
4300 | compute it by typename_concat inside GDB. */ | |
4301 | if (cu->language == language_ada | |
4302 | || (cu->language == language_fortran && physname)) | |
4303 | { | |
4304 | /* For Ada unit, we prefer the linkage name over the name, as | |
4305 | the former contains the exported name, which the user expects | |
4306 | to be able to reference. Ideally, we want the user to be able | |
4307 | to reference this entity using either natural or linkage name, | |
4308 | but we haven't started looking at this enhancement yet. */ | |
4309 | struct attribute *attr; | |
4310 | ||
4311 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
4312 | if (attr == NULL) | |
4313 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
4314 | if (attr && DW_STRING (attr)) | |
4315 | return DW_STRING (attr); | |
4316 | } | |
4317 | ||
94af9270 KS |
4318 | /* These are the only languages we know how to qualify names in. */ |
4319 | if (name != NULL | |
f55ee35c JK |
4320 | && (cu->language == language_cplus || cu->language == language_java |
4321 | || cu->language == language_fortran)) | |
94af9270 KS |
4322 | { |
4323 | if (die_needs_namespace (die, cu)) | |
4324 | { | |
4325 | long length; | |
4326 | char *prefix; | |
4327 | struct ui_file *buf; | |
4328 | ||
4329 | prefix = determine_prefix (die, cu); | |
4330 | buf = mem_fileopen (); | |
4331 | if (*prefix != '\0') | |
4332 | { | |
f55ee35c JK |
4333 | char *prefixed_name = typename_concat (NULL, prefix, name, |
4334 | physname, cu); | |
9a619af0 | 4335 | |
94af9270 KS |
4336 | fputs_unfiltered (prefixed_name, buf); |
4337 | xfree (prefixed_name); | |
4338 | } | |
4339 | else | |
4340 | fputs_unfiltered (name ? name : "", buf); | |
4341 | ||
4342 | /* For Java and C++ methods, append formal parameter type | |
4343 | information, if PHYSNAME. */ | |
6e70227d | 4344 | |
94af9270 KS |
4345 | if (physname && die->tag == DW_TAG_subprogram |
4346 | && (cu->language == language_cplus | |
4347 | || cu->language == language_java)) | |
4348 | { | |
4349 | struct type *type = read_type_die (die, cu); | |
4350 | ||
4351 | c_type_print_args (type, buf, 0, cu->language); | |
4352 | ||
4353 | if (cu->language == language_java) | |
4354 | { | |
4355 | /* For java, we must append the return type to method | |
4356 | names. */ | |
4357 | if (die->tag == DW_TAG_subprogram) | |
4358 | java_print_type (TYPE_TARGET_TYPE (type), "", buf, | |
4359 | 0, 0); | |
4360 | } | |
4361 | else if (cu->language == language_cplus) | |
4362 | { | |
4363 | if (TYPE_NFIELDS (type) > 0 | |
4364 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
4365 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, 0)))) | |
4366 | fputs_unfiltered (" const", buf); | |
4367 | } | |
4368 | } | |
4369 | ||
4370 | name = ui_file_obsavestring (buf, &cu->objfile->objfile_obstack, | |
4371 | &length); | |
4372 | ui_file_delete (buf); | |
4373 | ||
4374 | if (cu->language == language_cplus) | |
4375 | { | |
4376 | char *cname | |
4377 | = dwarf2_canonicalize_name (name, cu, | |
4378 | &cu->objfile->objfile_obstack); | |
9a619af0 | 4379 | |
94af9270 KS |
4380 | if (cname != NULL) |
4381 | name = cname; | |
4382 | } | |
4383 | } | |
4384 | } | |
4385 | ||
4386 | return name; | |
4387 | } | |
4388 | ||
0114d602 DJ |
4389 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
4390 | If scope qualifiers are appropriate they will be added. The result | |
4391 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
94af9270 KS |
4392 | not have a name. NAME may either be from a previous call to |
4393 | dwarf2_name or NULL. | |
4394 | ||
4395 | The output string will be canonicalized (if C++/Java). */ | |
0114d602 DJ |
4396 | |
4397 | static const char * | |
94af9270 | 4398 | dwarf2_full_name (char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 4399 | { |
94af9270 KS |
4400 | return dwarf2_compute_name (name, die, cu, 0); |
4401 | } | |
0114d602 | 4402 | |
94af9270 KS |
4403 | /* Construct a physname for the given DIE in CU. NAME may either be |
4404 | from a previous call to dwarf2_name or NULL. The result will be | |
4405 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
4406 | name. | |
0114d602 | 4407 | |
94af9270 | 4408 | The output string will be canonicalized (if C++/Java). */ |
0114d602 | 4409 | |
94af9270 KS |
4410 | static const char * |
4411 | dwarf2_physname (char *name, struct die_info *die, struct dwarf2_cu *cu) | |
4412 | { | |
4413 | return dwarf2_compute_name (name, die, cu, 1); | |
0114d602 DJ |
4414 | } |
4415 | ||
27aa8d6a SW |
4416 | /* Read the import statement specified by the given die and record it. */ |
4417 | ||
4418 | static void | |
4419 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
4420 | { | |
4421 | struct attribute *import_attr; | |
4422 | struct die_info *imported_die; | |
de4affc9 | 4423 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 4424 | const char *imported_name; |
794684b6 | 4425 | const char *imported_name_prefix; |
13387711 SW |
4426 | const char *canonical_name; |
4427 | const char *import_alias; | |
4428 | const char *imported_declaration = NULL; | |
794684b6 | 4429 | const char *import_prefix; |
13387711 SW |
4430 | |
4431 | char *temp; | |
27aa8d6a SW |
4432 | |
4433 | import_attr = dwarf2_attr (die, DW_AT_import, cu); | |
4434 | if (import_attr == NULL) | |
4435 | { | |
4436 | complaint (&symfile_complaints, _("Tag '%s' has no DW_AT_import"), | |
4437 | dwarf_tag_name (die->tag)); | |
4438 | return; | |
4439 | } | |
4440 | ||
de4affc9 CC |
4441 | imported_cu = cu; |
4442 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
4443 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
4444 | if (imported_name == NULL) |
4445 | { | |
4446 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
4447 | ||
4448 | The import in the following code: | |
4449 | namespace A | |
4450 | { | |
4451 | typedef int B; | |
4452 | } | |
4453 | ||
4454 | int main () | |
4455 | { | |
4456 | using A::B; | |
4457 | B b; | |
4458 | return b; | |
4459 | } | |
4460 | ||
4461 | ... | |
4462 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
4463 | <52> DW_AT_decl_file : 1 | |
4464 | <53> DW_AT_decl_line : 6 | |
4465 | <54> DW_AT_import : <0x75> | |
4466 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
4467 | <59> DW_AT_name : B | |
4468 | <5b> DW_AT_decl_file : 1 | |
4469 | <5c> DW_AT_decl_line : 2 | |
4470 | <5d> DW_AT_type : <0x6e> | |
4471 | ... | |
4472 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
4473 | <76> DW_AT_byte_size : 4 | |
4474 | <77> DW_AT_encoding : 5 (signed) | |
4475 | ||
4476 | imports the wrong die ( 0x75 instead of 0x58 ). | |
4477 | This case will be ignored until the gcc bug is fixed. */ | |
4478 | return; | |
4479 | } | |
4480 | ||
82856980 SW |
4481 | /* Figure out the local name after import. */ |
4482 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 4483 | |
794684b6 SW |
4484 | /* Figure out where the statement is being imported to. */ |
4485 | import_prefix = determine_prefix (die, cu); | |
4486 | ||
4487 | /* Figure out what the scope of the imported die is and prepend it | |
4488 | to the name of the imported die. */ | |
de4affc9 | 4489 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 4490 | |
f55ee35c JK |
4491 | if (imported_die->tag != DW_TAG_namespace |
4492 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 4493 | { |
13387711 SW |
4494 | imported_declaration = imported_name; |
4495 | canonical_name = imported_name_prefix; | |
794684b6 | 4496 | } |
13387711 | 4497 | else if (strlen (imported_name_prefix) > 0) |
794684b6 | 4498 | { |
13387711 SW |
4499 | temp = alloca (strlen (imported_name_prefix) |
4500 | + 2 + strlen (imported_name) + 1); | |
4501 | strcpy (temp, imported_name_prefix); | |
4502 | strcat (temp, "::"); | |
4503 | strcat (temp, imported_name); | |
4504 | canonical_name = temp; | |
794684b6 | 4505 | } |
13387711 SW |
4506 | else |
4507 | canonical_name = imported_name; | |
794684b6 | 4508 | |
c0cc3a76 SW |
4509 | cp_add_using_directive (import_prefix, |
4510 | canonical_name, | |
4511 | import_alias, | |
13387711 | 4512 | imported_declaration, |
c0cc3a76 | 4513 | &cu->objfile->objfile_obstack); |
27aa8d6a SW |
4514 | } |
4515 | ||
5fb290d7 | 4516 | static void |
e142c38c | 4517 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 4518 | { |
e142c38c | 4519 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
4520 | } |
4521 | ||
cb1df416 DJ |
4522 | static void |
4523 | free_cu_line_header (void *arg) | |
4524 | { | |
4525 | struct dwarf2_cu *cu = arg; | |
4526 | ||
4527 | free_line_header (cu->line_header); | |
4528 | cu->line_header = NULL; | |
4529 | } | |
4530 | ||
9291a0cd TT |
4531 | static void |
4532 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu, | |
4533 | char **name, char **comp_dir) | |
4534 | { | |
4535 | struct attribute *attr; | |
4536 | ||
4537 | *name = NULL; | |
4538 | *comp_dir = NULL; | |
4539 | ||
4540 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
4541 | is not a source language identifier. */ | |
4542 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
4543 | if (attr) | |
4544 | { | |
4545 | *name = DW_STRING (attr); | |
4546 | } | |
4547 | ||
4548 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
4549 | if (attr) | |
4550 | *comp_dir = DW_STRING (attr); | |
4551 | else if (*name != NULL && IS_ABSOLUTE_PATH (*name)) | |
4552 | { | |
4553 | *comp_dir = ldirname (*name); | |
4554 | if (*comp_dir != NULL) | |
4555 | make_cleanup (xfree, *comp_dir); | |
4556 | } | |
4557 | if (*comp_dir != NULL) | |
4558 | { | |
4559 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
4560 | directory, get rid of it. */ | |
4561 | char *cp = strchr (*comp_dir, ':'); | |
4562 | ||
4563 | if (cp && cp != *comp_dir && cp[-1] == '.' && cp[1] == '/') | |
4564 | *comp_dir = cp + 1; | |
4565 | } | |
4566 | ||
4567 | if (*name == NULL) | |
4568 | *name = "<unknown>"; | |
4569 | } | |
4570 | ||
c906108c | 4571 | static void |
e7c27a73 | 4572 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4573 | { |
e7c27a73 | 4574 | struct objfile *objfile = cu->objfile; |
debd256d | 4575 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 4576 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
4577 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
4578 | struct attribute *attr; | |
e1024ff1 | 4579 | char *name = NULL; |
c906108c SS |
4580 | char *comp_dir = NULL; |
4581 | struct die_info *child_die; | |
4582 | bfd *abfd = objfile->obfd; | |
debd256d | 4583 | struct line_header *line_header = 0; |
e142c38c | 4584 | CORE_ADDR baseaddr; |
6e70227d | 4585 | |
e142c38c | 4586 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 4587 | |
fae299cd | 4588 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
4589 | |
4590 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
4591 | from finish_block. */ | |
2acceee2 | 4592 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
4593 | lowpc = highpc; |
4594 | lowpc += baseaddr; | |
4595 | highpc += baseaddr; | |
4596 | ||
9291a0cd | 4597 | find_file_and_directory (die, cu, &name, &comp_dir); |
e1024ff1 | 4598 | |
e142c38c | 4599 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
4600 | if (attr) |
4601 | { | |
e142c38c | 4602 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
4603 | } |
4604 | ||
b0f35d58 | 4605 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
6e70227d | 4606 | if (attr) |
b0f35d58 | 4607 | cu->producer = DW_STRING (attr); |
303b6f5d | 4608 | |
c906108c SS |
4609 | /* We assume that we're processing GCC output. */ |
4610 | processing_gcc_compilation = 2; | |
c906108c | 4611 | |
df8a16a1 DJ |
4612 | processing_has_namespace_info = 0; |
4613 | ||
c906108c SS |
4614 | start_symtab (name, comp_dir, lowpc); |
4615 | record_debugformat ("DWARF 2"); | |
303b6f5d | 4616 | record_producer (cu->producer); |
c906108c | 4617 | |
e142c38c | 4618 | initialize_cu_func_list (cu); |
c906108c | 4619 | |
cb1df416 DJ |
4620 | /* Decode line number information if present. We do this before |
4621 | processing child DIEs, so that the line header table is available | |
4622 | for DW_AT_decl_file. */ | |
e142c38c | 4623 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
4624 | if (attr) |
4625 | { | |
debd256d | 4626 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 4627 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
4628 | if (line_header) |
4629 | { | |
cb1df416 DJ |
4630 | cu->line_header = line_header; |
4631 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 4632 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 4633 | } |
5fb290d7 | 4634 | } |
debd256d | 4635 | |
cb1df416 DJ |
4636 | /* Process all dies in compilation unit. */ |
4637 | if (die->child != NULL) | |
4638 | { | |
4639 | child_die = die->child; | |
4640 | while (child_die && child_die->tag) | |
4641 | { | |
4642 | process_die (child_die, cu); | |
4643 | child_die = sibling_die (child_die); | |
4644 | } | |
4645 | } | |
4646 | ||
2e276125 JB |
4647 | /* Decode macro information, if present. Dwarf 2 macro information |
4648 | refers to information in the line number info statement program | |
4649 | header, so we can only read it if we've read the header | |
4650 | successfully. */ | |
e142c38c | 4651 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 4652 | if (attr && line_header) |
2e276125 JB |
4653 | { |
4654 | unsigned int macro_offset = DW_UNSND (attr); | |
9a619af0 | 4655 | |
2e276125 | 4656 | dwarf_decode_macros (line_header, macro_offset, |
e7c27a73 | 4657 | comp_dir, abfd, cu); |
2e276125 | 4658 | } |
debd256d | 4659 | do_cleanups (back_to); |
5fb290d7 DJ |
4660 | } |
4661 | ||
348e048f DE |
4662 | /* For TUs we want to skip the first top level sibling if it's not the |
4663 | actual type being defined by this TU. In this case the first top | |
4664 | level sibling is there to provide context only. */ | |
4665 | ||
4666 | static void | |
4667 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4668 | { | |
4669 | struct objfile *objfile = cu->objfile; | |
4670 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); | |
4671 | CORE_ADDR lowpc; | |
4672 | struct attribute *attr; | |
4673 | char *name = NULL; | |
4674 | char *comp_dir = NULL; | |
4675 | struct die_info *child_die; | |
4676 | bfd *abfd = objfile->obfd; | |
348e048f DE |
4677 | |
4678 | /* start_symtab needs a low pc, but we don't really have one. | |
4679 | Do what read_file_scope would do in the absence of such info. */ | |
4680 | lowpc = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
4681 | ||
4682 | /* Find the filename. Do not use dwarf2_name here, since the filename | |
4683 | is not a source language identifier. */ | |
4684 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
4685 | if (attr) | |
4686 | name = DW_STRING (attr); | |
4687 | ||
4688 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); | |
4689 | if (attr) | |
4690 | comp_dir = DW_STRING (attr); | |
4691 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
4692 | { | |
4693 | comp_dir = ldirname (name); | |
4694 | if (comp_dir != NULL) | |
4695 | make_cleanup (xfree, comp_dir); | |
4696 | } | |
4697 | ||
4698 | if (name == NULL) | |
4699 | name = "<unknown>"; | |
4700 | ||
4701 | attr = dwarf2_attr (die, DW_AT_language, cu); | |
4702 | if (attr) | |
4703 | set_cu_language (DW_UNSND (attr), cu); | |
4704 | ||
4705 | /* This isn't technically needed today. It is done for symmetry | |
4706 | with read_file_scope. */ | |
4707 | attr = dwarf2_attr (die, DW_AT_producer, cu); | |
6e70227d | 4708 | if (attr) |
348e048f DE |
4709 | cu->producer = DW_STRING (attr); |
4710 | ||
4711 | /* We assume that we're processing GCC output. */ | |
4712 | processing_gcc_compilation = 2; | |
4713 | ||
4714 | processing_has_namespace_info = 0; | |
4715 | ||
4716 | start_symtab (name, comp_dir, lowpc); | |
4717 | record_debugformat ("DWARF 2"); | |
4718 | record_producer (cu->producer); | |
4719 | ||
4720 | /* Process the dies in the type unit. */ | |
4721 | if (die->child == NULL) | |
4722 | { | |
4723 | dump_die_for_error (die); | |
4724 | error (_("Dwarf Error: Missing children for type unit [in module %s]"), | |
4725 | bfd_get_filename (abfd)); | |
4726 | } | |
4727 | ||
4728 | child_die = die->child; | |
4729 | ||
4730 | while (child_die && child_die->tag) | |
4731 | { | |
4732 | process_die (child_die, cu); | |
4733 | ||
4734 | child_die = sibling_die (child_die); | |
4735 | } | |
4736 | ||
4737 | do_cleanups (back_to); | |
4738 | } | |
4739 | ||
5fb290d7 | 4740 | static void |
e142c38c DJ |
4741 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
4742 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
4743 | { |
4744 | struct function_range *thisfn; | |
4745 | ||
4746 | thisfn = (struct function_range *) | |
7b5a2f43 | 4747 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
4748 | thisfn->name = name; |
4749 | thisfn->lowpc = lowpc; | |
4750 | thisfn->highpc = highpc; | |
4751 | thisfn->seen_line = 0; | |
4752 | thisfn->next = NULL; | |
4753 | ||
e142c38c DJ |
4754 | if (cu->last_fn == NULL) |
4755 | cu->first_fn = thisfn; | |
5fb290d7 | 4756 | else |
e142c38c | 4757 | cu->last_fn->next = thisfn; |
5fb290d7 | 4758 | |
e142c38c | 4759 | cu->last_fn = thisfn; |
c906108c SS |
4760 | } |
4761 | ||
d389af10 JK |
4762 | /* qsort helper for inherit_abstract_dies. */ |
4763 | ||
4764 | static int | |
4765 | unsigned_int_compar (const void *ap, const void *bp) | |
4766 | { | |
4767 | unsigned int a = *(unsigned int *) ap; | |
4768 | unsigned int b = *(unsigned int *) bp; | |
4769 | ||
4770 | return (a > b) - (b > a); | |
4771 | } | |
4772 | ||
4773 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). | |
4774 | Inherit only the children of the DW_AT_abstract_origin DIE not being already | |
4775 | referenced by DW_AT_abstract_origin from the children of the current DIE. */ | |
4776 | ||
4777 | static void | |
4778 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
4779 | { | |
4780 | struct die_info *child_die; | |
4781 | unsigned die_children_count; | |
4782 | /* CU offsets which were referenced by children of the current DIE. */ | |
4783 | unsigned *offsets; | |
4784 | unsigned *offsets_end, *offsetp; | |
4785 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ | |
4786 | struct die_info *origin_die; | |
4787 | /* Iterator of the ORIGIN_DIE children. */ | |
4788 | struct die_info *origin_child_die; | |
4789 | struct cleanup *cleanups; | |
4790 | struct attribute *attr; | |
4791 | ||
4792 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
4793 | if (!attr) | |
4794 | return; | |
4795 | ||
4796 | origin_die = follow_die_ref (die, attr, &cu); | |
edb3359d DJ |
4797 | if (die->tag != origin_die->tag |
4798 | && !(die->tag == DW_TAG_inlined_subroutine | |
4799 | && origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
4800 | complaint (&symfile_complaints, |
4801 | _("DIE 0x%x and its abstract origin 0x%x have different tags"), | |
4802 | die->offset, origin_die->offset); | |
4803 | ||
4804 | child_die = die->child; | |
4805 | die_children_count = 0; | |
4806 | while (child_die && child_die->tag) | |
4807 | { | |
4808 | child_die = sibling_die (child_die); | |
4809 | die_children_count++; | |
4810 | } | |
4811 | offsets = xmalloc (sizeof (*offsets) * die_children_count); | |
4812 | cleanups = make_cleanup (xfree, offsets); | |
4813 | ||
4814 | offsets_end = offsets; | |
4815 | child_die = die->child; | |
4816 | while (child_die && child_die->tag) | |
4817 | { | |
c38f313d DJ |
4818 | /* For each CHILD_DIE, find the corresponding child of |
4819 | ORIGIN_DIE. If there is more than one layer of | |
4820 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
4821 | but GCC versions at least through 4.4 generate this (GCC PR | |
4822 | 40573). */ | |
4823 | struct die_info *child_origin_die = child_die; | |
9a619af0 | 4824 | |
c38f313d DJ |
4825 | while (1) |
4826 | { | |
4827 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, cu); | |
4828 | if (attr == NULL) | |
4829 | break; | |
4830 | child_origin_die = follow_die_ref (child_origin_die, attr, &cu); | |
4831 | } | |
4832 | ||
d389af10 JK |
4833 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
4834 | counterpart may exist. */ | |
c38f313d | 4835 | if (child_origin_die != child_die) |
d389af10 | 4836 | { |
edb3359d DJ |
4837 | if (child_die->tag != child_origin_die->tag |
4838 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
4839 | && child_origin_die->tag == DW_TAG_subprogram)) | |
d389af10 JK |
4840 | complaint (&symfile_complaints, |
4841 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
4842 | "different tags"), child_die->offset, | |
4843 | child_origin_die->offset); | |
c38f313d DJ |
4844 | if (child_origin_die->parent != origin_die) |
4845 | complaint (&symfile_complaints, | |
4846 | _("Child DIE 0x%x and its abstract origin 0x%x have " | |
4847 | "different parents"), child_die->offset, | |
4848 | child_origin_die->offset); | |
4849 | else | |
4850 | *offsets_end++ = child_origin_die->offset; | |
d389af10 JK |
4851 | } |
4852 | child_die = sibling_die (child_die); | |
4853 | } | |
4854 | qsort (offsets, offsets_end - offsets, sizeof (*offsets), | |
4855 | unsigned_int_compar); | |
4856 | for (offsetp = offsets + 1; offsetp < offsets_end; offsetp++) | |
4857 | if (offsetp[-1] == *offsetp) | |
4858 | complaint (&symfile_complaints, _("Multiple children of DIE 0x%x refer " | |
4859 | "to DIE 0x%x as their abstract origin"), | |
4860 | die->offset, *offsetp); | |
4861 | ||
4862 | offsetp = offsets; | |
4863 | origin_child_die = origin_die->child; | |
4864 | while (origin_child_die && origin_child_die->tag) | |
4865 | { | |
4866 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
4867 | while (offsetp < offsets_end && *offsetp < origin_child_die->offset) | |
4868 | offsetp++; | |
4869 | if (offsetp >= offsets_end || *offsetp > origin_child_die->offset) | |
4870 | { | |
4871 | /* Found that ORIGIN_CHILD_DIE is really not referenced. */ | |
4872 | process_die (origin_child_die, cu); | |
4873 | } | |
4874 | origin_child_die = sibling_die (origin_child_die); | |
4875 | } | |
4876 | ||
4877 | do_cleanups (cleanups); | |
4878 | } | |
4879 | ||
c906108c | 4880 | static void |
e7c27a73 | 4881 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4882 | { |
e7c27a73 | 4883 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 4884 | struct context_stack *new; |
c906108c SS |
4885 | CORE_ADDR lowpc; |
4886 | CORE_ADDR highpc; | |
4887 | struct die_info *child_die; | |
edb3359d | 4888 | struct attribute *attr, *call_line, *call_file; |
c906108c | 4889 | char *name; |
e142c38c | 4890 | CORE_ADDR baseaddr; |
801e3a5b | 4891 | struct block *block; |
edb3359d DJ |
4892 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
4893 | ||
4894 | if (inlined_func) | |
4895 | { | |
4896 | /* If we do not have call site information, we can't show the | |
4897 | caller of this inlined function. That's too confusing, so | |
4898 | only use the scope for local variables. */ | |
4899 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
4900 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
4901 | if (call_line == NULL || call_file == NULL) | |
4902 | { | |
4903 | read_lexical_block_scope (die, cu); | |
4904 | return; | |
4905 | } | |
4906 | } | |
c906108c | 4907 | |
e142c38c DJ |
4908 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
4909 | ||
94af9270 | 4910 | name = dwarf2_name (die, cu); |
c906108c | 4911 | |
e8d05480 JB |
4912 | /* Ignore functions with missing or empty names. These are actually |
4913 | illegal according to the DWARF standard. */ | |
4914 | if (name == NULL) | |
4915 | { | |
4916 | complaint (&symfile_complaints, | |
4917 | _("missing name for subprogram DIE at %d"), die->offset); | |
4918 | return; | |
4919 | } | |
4920 | ||
4921 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
4922 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) | |
4923 | { | |
ae4d0c03 PM |
4924 | attr = dwarf2_attr (die, DW_AT_external, cu); |
4925 | if (!attr || !DW_UNSND (attr)) | |
4926 | complaint (&symfile_complaints, | |
4927 | _("cannot get low and high bounds for subprogram DIE at %d"), | |
4928 | die->offset); | |
e8d05480 JB |
4929 | return; |
4930 | } | |
c906108c SS |
4931 | |
4932 | lowpc += baseaddr; | |
4933 | highpc += baseaddr; | |
4934 | ||
5fb290d7 | 4935 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 4936 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 4937 | |
c906108c | 4938 | new = push_context (0, lowpc); |
f792889a | 4939 | new->name = new_symbol (die, read_type_die (die, cu), cu); |
4c2df51b | 4940 | |
4cecd739 DJ |
4941 | /* If there is a location expression for DW_AT_frame_base, record |
4942 | it. */ | |
e142c38c | 4943 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 4944 | if (attr) |
c034e007 AC |
4945 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
4946 | expression is being recorded directly in the function's symbol | |
4947 | and not in a separate frame-base object. I guess this hack is | |
4948 | to avoid adding some sort of frame-base adjunct/annex to the | |
4949 | function's symbol :-(. The problem with doing this is that it | |
4950 | results in a function symbol with a location expression that | |
4951 | has nothing to do with the location of the function, ouch! The | |
4952 | relationship should be: a function's symbol has-a frame base; a | |
4953 | frame-base has-a location expression. */ | |
e7c27a73 | 4954 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 4955 | |
e142c38c | 4956 | cu->list_in_scope = &local_symbols; |
c906108c | 4957 | |
639d11d3 | 4958 | if (die->child != NULL) |
c906108c | 4959 | { |
639d11d3 | 4960 | child_die = die->child; |
c906108c SS |
4961 | while (child_die && child_die->tag) |
4962 | { | |
e7c27a73 | 4963 | process_die (child_die, cu); |
c906108c SS |
4964 | child_die = sibling_die (child_die); |
4965 | } | |
4966 | } | |
4967 | ||
d389af10 JK |
4968 | inherit_abstract_dies (die, cu); |
4969 | ||
4a811a97 UW |
4970 | /* If we have a DW_AT_specification, we might need to import using |
4971 | directives from the context of the specification DIE. See the | |
4972 | comment in determine_prefix. */ | |
4973 | if (cu->language == language_cplus | |
4974 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
4975 | { | |
4976 | struct dwarf2_cu *spec_cu = cu; | |
4977 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
4978 | ||
4979 | while (spec_die) | |
4980 | { | |
4981 | child_die = spec_die->child; | |
4982 | while (child_die && child_die->tag) | |
4983 | { | |
4984 | if (child_die->tag == DW_TAG_imported_module) | |
4985 | process_die (child_die, spec_cu); | |
4986 | child_die = sibling_die (child_die); | |
4987 | } | |
4988 | ||
4989 | /* In some cases, GCC generates specification DIEs that | |
4990 | themselves contain DW_AT_specification attributes. */ | |
4991 | spec_die = die_specification (spec_die, &spec_cu); | |
4992 | } | |
4993 | } | |
4994 | ||
c906108c SS |
4995 | new = pop_context (); |
4996 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
4997 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
4998 | lowpc, highpc, objfile); | |
4999 | ||
df8a16a1 | 5000 | /* For C++, set the block's scope. */ |
f55ee35c | 5001 | if (cu->language == language_cplus || cu->language == language_fortran) |
df8a16a1 | 5002 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, |
0114d602 | 5003 | determine_prefix (die, cu), |
df8a16a1 DJ |
5004 | processing_has_namespace_info); |
5005 | ||
801e3a5b JB |
5006 | /* If we have address ranges, record them. */ |
5007 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 5008 | |
208d8187 JB |
5009 | /* In C++, we can have functions nested inside functions (e.g., when |
5010 | a function declares a class that has methods). This means that | |
5011 | when we finish processing a function scope, we may need to go | |
5012 | back to building a containing block's symbol lists. */ | |
5013 | local_symbols = new->locals; | |
5014 | param_symbols = new->params; | |
27aa8d6a | 5015 | using_directives = new->using_directives; |
208d8187 | 5016 | |
921e78cf JB |
5017 | /* If we've finished processing a top-level function, subsequent |
5018 | symbols go in the file symbol list. */ | |
5019 | if (outermost_context_p ()) | |
e142c38c | 5020 | cu->list_in_scope = &file_symbols; |
c906108c SS |
5021 | } |
5022 | ||
5023 | /* Process all the DIES contained within a lexical block scope. Start | |
5024 | a new scope, process the dies, and then close the scope. */ | |
5025 | ||
5026 | static void | |
e7c27a73 | 5027 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5028 | { |
e7c27a73 | 5029 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 5030 | struct context_stack *new; |
c906108c SS |
5031 | CORE_ADDR lowpc, highpc; |
5032 | struct die_info *child_die; | |
e142c38c DJ |
5033 | CORE_ADDR baseaddr; |
5034 | ||
5035 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
5036 | |
5037 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
5038 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
5039 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 5040 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 5041 | describe ranges. */ |
d85a05f0 | 5042 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
c906108c SS |
5043 | return; |
5044 | lowpc += baseaddr; | |
5045 | highpc += baseaddr; | |
5046 | ||
5047 | push_context (0, lowpc); | |
639d11d3 | 5048 | if (die->child != NULL) |
c906108c | 5049 | { |
639d11d3 | 5050 | child_die = die->child; |
c906108c SS |
5051 | while (child_die && child_die->tag) |
5052 | { | |
e7c27a73 | 5053 | process_die (child_die, cu); |
c906108c SS |
5054 | child_die = sibling_die (child_die); |
5055 | } | |
5056 | } | |
5057 | new = pop_context (); | |
5058 | ||
8540c487 | 5059 | if (local_symbols != NULL || using_directives != NULL) |
c906108c | 5060 | { |
801e3a5b JB |
5061 | struct block *block |
5062 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
5063 | highpc, objfile); | |
5064 | ||
5065 | /* Note that recording ranges after traversing children, as we | |
5066 | do here, means that recording a parent's ranges entails | |
5067 | walking across all its children's ranges as they appear in | |
5068 | the address map, which is quadratic behavior. | |
5069 | ||
5070 | It would be nicer to record the parent's ranges before | |
5071 | traversing its children, simply overriding whatever you find | |
5072 | there. But since we don't even decide whether to create a | |
5073 | block until after we've traversed its children, that's hard | |
5074 | to do. */ | |
5075 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
5076 | } |
5077 | local_symbols = new->locals; | |
27aa8d6a | 5078 | using_directives = new->using_directives; |
c906108c SS |
5079 | } |
5080 | ||
43039443 | 5081 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
5082 | Return 1 if the attributes are present and valid, otherwise, return 0. |
5083 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
5084 | |
5085 | static int | |
5086 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
5087 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
5088 | struct partial_symtab *ranges_pst) | |
43039443 JK |
5089 | { |
5090 | struct objfile *objfile = cu->objfile; | |
5091 | struct comp_unit_head *cu_header = &cu->header; | |
5092 | bfd *obfd = objfile->obfd; | |
5093 | unsigned int addr_size = cu_header->addr_size; | |
5094 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
5095 | /* Base address selection entry. */ | |
5096 | CORE_ADDR base; | |
5097 | int found_base; | |
5098 | unsigned int dummy; | |
5099 | gdb_byte *buffer; | |
5100 | CORE_ADDR marker; | |
5101 | int low_set; | |
5102 | CORE_ADDR low = 0; | |
5103 | CORE_ADDR high = 0; | |
ff013f42 | 5104 | CORE_ADDR baseaddr; |
43039443 | 5105 | |
d00adf39 DE |
5106 | found_base = cu->base_known; |
5107 | base = cu->base_address; | |
43039443 | 5108 | |
be391dca | 5109 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 5110 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 JK |
5111 | { |
5112 | complaint (&symfile_complaints, | |
5113 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
5114 | offset); | |
5115 | return 0; | |
5116 | } | |
dce234bc | 5117 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 JK |
5118 | |
5119 | /* Read in the largest possible address. */ | |
5120 | marker = read_address (obfd, buffer, cu, &dummy); | |
5121 | if ((marker & mask) == mask) | |
5122 | { | |
5123 | /* If we found the largest possible address, then | |
5124 | read the base address. */ | |
5125 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5126 | buffer += 2 * addr_size; | |
5127 | offset += 2 * addr_size; | |
5128 | found_base = 1; | |
5129 | } | |
5130 | ||
5131 | low_set = 0; | |
5132 | ||
e7030f15 | 5133 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 5134 | |
43039443 JK |
5135 | while (1) |
5136 | { | |
5137 | CORE_ADDR range_beginning, range_end; | |
5138 | ||
5139 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
5140 | buffer += addr_size; | |
5141 | range_end = read_address (obfd, buffer, cu, &dummy); | |
5142 | buffer += addr_size; | |
5143 | offset += 2 * addr_size; | |
5144 | ||
5145 | /* An end of list marker is a pair of zero addresses. */ | |
5146 | if (range_beginning == 0 && range_end == 0) | |
5147 | /* Found the end of list entry. */ | |
5148 | break; | |
5149 | ||
5150 | /* Each base address selection entry is a pair of 2 values. | |
5151 | The first is the largest possible address, the second is | |
5152 | the base address. Check for a base address here. */ | |
5153 | if ((range_beginning & mask) == mask) | |
5154 | { | |
5155 | /* If we found the largest possible address, then | |
5156 | read the base address. */ | |
5157 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
5158 | found_base = 1; | |
5159 | continue; | |
5160 | } | |
5161 | ||
5162 | if (!found_base) | |
5163 | { | |
5164 | /* We have no valid base address for the ranges | |
5165 | data. */ | |
5166 | complaint (&symfile_complaints, | |
5167 | _("Invalid .debug_ranges data (no base address)")); | |
5168 | return 0; | |
5169 | } | |
5170 | ||
5171 | range_beginning += base; | |
5172 | range_end += base; | |
5173 | ||
ff013f42 JK |
5174 | if (ranges_pst != NULL && range_beginning < range_end) |
5175 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
5176 | range_beginning + baseaddr, range_end - 1 + baseaddr, | |
5177 | ranges_pst); | |
5178 | ||
43039443 JK |
5179 | /* FIXME: This is recording everything as a low-high |
5180 | segment of consecutive addresses. We should have a | |
5181 | data structure for discontiguous block ranges | |
5182 | instead. */ | |
5183 | if (! low_set) | |
5184 | { | |
5185 | low = range_beginning; | |
5186 | high = range_end; | |
5187 | low_set = 1; | |
5188 | } | |
5189 | else | |
5190 | { | |
5191 | if (range_beginning < low) | |
5192 | low = range_beginning; | |
5193 | if (range_end > high) | |
5194 | high = range_end; | |
5195 | } | |
5196 | } | |
5197 | ||
5198 | if (! low_set) | |
5199 | /* If the first entry is an end-of-list marker, the range | |
5200 | describes an empty scope, i.e. no instructions. */ | |
5201 | return 0; | |
5202 | ||
5203 | if (low_return) | |
5204 | *low_return = low; | |
5205 | if (high_return) | |
5206 | *high_return = high; | |
5207 | return 1; | |
5208 | } | |
5209 | ||
af34e669 DJ |
5210 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
5211 | are present and valid, otherwise, return 0. Return -1 if the range is | |
5212 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 5213 | static int |
af34e669 | 5214 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
5215 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
5216 | struct partial_symtab *pst) | |
c906108c SS |
5217 | { |
5218 | struct attribute *attr; | |
af34e669 DJ |
5219 | CORE_ADDR low = 0; |
5220 | CORE_ADDR high = 0; | |
5221 | int ret = 0; | |
c906108c | 5222 | |
e142c38c | 5223 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 5224 | if (attr) |
af34e669 DJ |
5225 | { |
5226 | high = DW_ADDR (attr); | |
e142c38c | 5227 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
5228 | if (attr) |
5229 | low = DW_ADDR (attr); | |
5230 | else | |
5231 | /* Found high w/o low attribute. */ | |
5232 | return 0; | |
5233 | ||
5234 | /* Found consecutive range of addresses. */ | |
5235 | ret = 1; | |
5236 | } | |
c906108c | 5237 | else |
af34e669 | 5238 | { |
e142c38c | 5239 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
5240 | if (attr != NULL) |
5241 | { | |
af34e669 | 5242 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 5243 | .debug_ranges section. */ |
d85a05f0 | 5244 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, pst)) |
af34e669 | 5245 | return 0; |
43039443 | 5246 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
5247 | ret = -1; |
5248 | } | |
5249 | } | |
c906108c SS |
5250 | |
5251 | if (high < low) | |
5252 | return 0; | |
5253 | ||
5254 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
5255 | eliminate duplicate copies of functions and vtables and such. | |
5256 | The linker will arbitrarily choose one and discard the others. | |
5257 | The AT_*_pc values for such functions refer to local labels in | |
5258 | these sections. If the section from that file was discarded, the | |
5259 | labels are not in the output, so the relocs get a value of 0. | |
5260 | If this is a discarded function, mark the pc bounds as invalid, | |
5261 | so that GDB will ignore it. */ | |
72dca2f5 | 5262 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
5263 | return 0; |
5264 | ||
5265 | *lowpc = low; | |
5266 | *highpc = high; | |
af34e669 | 5267 | return ret; |
c906108c SS |
5268 | } |
5269 | ||
b084d499 JB |
5270 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
5271 | its low and high PC addresses. Do nothing if these addresses could not | |
5272 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
5273 | and HIGHPC to the high address if greater than HIGHPC. */ | |
5274 | ||
5275 | static void | |
5276 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
5277 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5278 | struct dwarf2_cu *cu) | |
5279 | { | |
5280 | CORE_ADDR low, high; | |
5281 | struct die_info *child = die->child; | |
5282 | ||
d85a05f0 | 5283 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL)) |
b084d499 JB |
5284 | { |
5285 | *lowpc = min (*lowpc, low); | |
5286 | *highpc = max (*highpc, high); | |
5287 | } | |
5288 | ||
5289 | /* If the language does not allow nested subprograms (either inside | |
5290 | subprograms or lexical blocks), we're done. */ | |
5291 | if (cu->language != language_ada) | |
5292 | return; | |
6e70227d | 5293 | |
b084d499 JB |
5294 | /* Check all the children of the given DIE. If it contains nested |
5295 | subprograms, then check their pc bounds. Likewise, we need to | |
5296 | check lexical blocks as well, as they may also contain subprogram | |
5297 | definitions. */ | |
5298 | while (child && child->tag) | |
5299 | { | |
5300 | if (child->tag == DW_TAG_subprogram | |
5301 | || child->tag == DW_TAG_lexical_block) | |
5302 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
5303 | child = sibling_die (child); | |
5304 | } | |
5305 | } | |
5306 | ||
fae299cd DC |
5307 | /* Get the low and high pc's represented by the scope DIE, and store |
5308 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
5309 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
5310 | ||
5311 | static void | |
5312 | get_scope_pc_bounds (struct die_info *die, | |
5313 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5314 | struct dwarf2_cu *cu) | |
5315 | { | |
5316 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
5317 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
5318 | CORE_ADDR current_low, current_high; | |
5319 | ||
d85a05f0 | 5320 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL)) |
fae299cd DC |
5321 | { |
5322 | best_low = current_low; | |
5323 | best_high = current_high; | |
5324 | } | |
5325 | else | |
5326 | { | |
5327 | struct die_info *child = die->child; | |
5328 | ||
5329 | while (child && child->tag) | |
5330 | { | |
5331 | switch (child->tag) { | |
5332 | case DW_TAG_subprogram: | |
b084d499 | 5333 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
5334 | break; |
5335 | case DW_TAG_namespace: | |
f55ee35c | 5336 | case DW_TAG_module: |
fae299cd DC |
5337 | /* FIXME: carlton/2004-01-16: Should we do this for |
5338 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
5339 | that current GCC's always emit the DIEs corresponding | |
5340 | to definitions of methods of classes as children of a | |
5341 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
5342 | the DIEs giving the declarations, which could be | |
5343 | anywhere). But I don't see any reason why the | |
5344 | standards says that they have to be there. */ | |
5345 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
5346 | ||
5347 | if (current_low != ((CORE_ADDR) -1)) | |
5348 | { | |
5349 | best_low = min (best_low, current_low); | |
5350 | best_high = max (best_high, current_high); | |
5351 | } | |
5352 | break; | |
5353 | default: | |
5354 | /* Ignore. */ | |
5355 | break; | |
5356 | } | |
5357 | ||
5358 | child = sibling_die (child); | |
5359 | } | |
5360 | } | |
5361 | ||
5362 | *lowpc = best_low; | |
5363 | *highpc = best_high; | |
5364 | } | |
5365 | ||
801e3a5b JB |
5366 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
5367 | in DIE. */ | |
5368 | static void | |
5369 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
5370 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
5371 | { | |
5372 | struct attribute *attr; | |
5373 | ||
5374 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
5375 | if (attr) | |
5376 | { | |
5377 | CORE_ADDR high = DW_ADDR (attr); | |
9a619af0 | 5378 | |
801e3a5b JB |
5379 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
5380 | if (attr) | |
5381 | { | |
5382 | CORE_ADDR low = DW_ADDR (attr); | |
9a619af0 | 5383 | |
801e3a5b JB |
5384 | record_block_range (block, baseaddr + low, baseaddr + high - 1); |
5385 | } | |
5386 | } | |
5387 | ||
5388 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
5389 | if (attr) | |
5390 | { | |
5391 | bfd *obfd = cu->objfile->obfd; | |
5392 | ||
5393 | /* The value of the DW_AT_ranges attribute is the offset of the | |
5394 | address range list in the .debug_ranges section. */ | |
5395 | unsigned long offset = DW_UNSND (attr); | |
dce234bc | 5396 | gdb_byte *buffer = dwarf2_per_objfile->ranges.buffer + offset; |
801e3a5b JB |
5397 | |
5398 | /* For some target architectures, but not others, the | |
5399 | read_address function sign-extends the addresses it returns. | |
5400 | To recognize base address selection entries, we need a | |
5401 | mask. */ | |
5402 | unsigned int addr_size = cu->header.addr_size; | |
5403 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
5404 | ||
5405 | /* The base address, to which the next pair is relative. Note | |
5406 | that this 'base' is a DWARF concept: most entries in a range | |
5407 | list are relative, to reduce the number of relocs against the | |
5408 | debugging information. This is separate from this function's | |
5409 | 'baseaddr' argument, which GDB uses to relocate debugging | |
5410 | information from a shared library based on the address at | |
5411 | which the library was loaded. */ | |
d00adf39 DE |
5412 | CORE_ADDR base = cu->base_address; |
5413 | int base_known = cu->base_known; | |
801e3a5b | 5414 | |
be391dca | 5415 | gdb_assert (dwarf2_per_objfile->ranges.readin); |
dce234bc | 5416 | if (offset >= dwarf2_per_objfile->ranges.size) |
801e3a5b JB |
5417 | { |
5418 | complaint (&symfile_complaints, | |
5419 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
5420 | offset); | |
5421 | return; | |
5422 | } | |
5423 | ||
5424 | for (;;) | |
5425 | { | |
5426 | unsigned int bytes_read; | |
5427 | CORE_ADDR start, end; | |
5428 | ||
5429 | start = read_address (obfd, buffer, cu, &bytes_read); | |
5430 | buffer += bytes_read; | |
5431 | end = read_address (obfd, buffer, cu, &bytes_read); | |
5432 | buffer += bytes_read; | |
5433 | ||
5434 | /* Did we find the end of the range list? */ | |
5435 | if (start == 0 && end == 0) | |
5436 | break; | |
5437 | ||
5438 | /* Did we find a base address selection entry? */ | |
5439 | else if ((start & base_select_mask) == base_select_mask) | |
5440 | { | |
5441 | base = end; | |
5442 | base_known = 1; | |
5443 | } | |
5444 | ||
5445 | /* We found an ordinary address range. */ | |
5446 | else | |
5447 | { | |
5448 | if (!base_known) | |
5449 | { | |
5450 | complaint (&symfile_complaints, | |
5451 | _("Invalid .debug_ranges data (no base address)")); | |
5452 | return; | |
5453 | } | |
5454 | ||
6e70227d DE |
5455 | record_block_range (block, |
5456 | baseaddr + base + start, | |
801e3a5b JB |
5457 | baseaddr + base + end - 1); |
5458 | } | |
5459 | } | |
5460 | } | |
5461 | } | |
5462 | ||
c906108c SS |
5463 | /* Add an aggregate field to the field list. */ |
5464 | ||
5465 | static void | |
107d2387 | 5466 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 5467 | struct dwarf2_cu *cu) |
6e70227d | 5468 | { |
e7c27a73 | 5469 | struct objfile *objfile = cu->objfile; |
5e2b427d | 5470 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
5471 | struct nextfield *new_field; |
5472 | struct attribute *attr; | |
5473 | struct field *fp; | |
5474 | char *fieldname = ""; | |
5475 | ||
5476 | /* Allocate a new field list entry and link it in. */ | |
5477 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 5478 | make_cleanup (xfree, new_field); |
c906108c | 5479 | memset (new_field, 0, sizeof (struct nextfield)); |
7d0ccb61 DJ |
5480 | |
5481 | if (die->tag == DW_TAG_inheritance) | |
5482 | { | |
5483 | new_field->next = fip->baseclasses; | |
5484 | fip->baseclasses = new_field; | |
5485 | } | |
5486 | else | |
5487 | { | |
5488 | new_field->next = fip->fields; | |
5489 | fip->fields = new_field; | |
5490 | } | |
c906108c SS |
5491 | fip->nfields++; |
5492 | ||
5493 | /* Handle accessibility and virtuality of field. | |
5494 | The default accessibility for members is public, the default | |
5495 | accessibility for inheritance is private. */ | |
5496 | if (die->tag != DW_TAG_inheritance) | |
5497 | new_field->accessibility = DW_ACCESS_public; | |
5498 | else | |
5499 | new_field->accessibility = DW_ACCESS_private; | |
5500 | new_field->virtuality = DW_VIRTUALITY_none; | |
5501 | ||
e142c38c | 5502 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
5503 | if (attr) |
5504 | new_field->accessibility = DW_UNSND (attr); | |
5505 | if (new_field->accessibility != DW_ACCESS_public) | |
5506 | fip->non_public_fields = 1; | |
e142c38c | 5507 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
5508 | if (attr) |
5509 | new_field->virtuality = DW_UNSND (attr); | |
5510 | ||
5511 | fp = &new_field->field; | |
a9a9bd0f | 5512 | |
e142c38c | 5513 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 5514 | { |
a9a9bd0f | 5515 | /* Data member other than a C++ static data member. */ |
6e70227d | 5516 | |
c906108c | 5517 | /* Get type of field. */ |
e7c27a73 | 5518 | fp->type = die_type (die, cu); |
c906108c | 5519 | |
d6a843b5 | 5520 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 5521 | |
c906108c | 5522 | /* Get bit size of field (zero if none). */ |
e142c38c | 5523 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
5524 | if (attr) |
5525 | { | |
5526 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
5527 | } | |
5528 | else | |
5529 | { | |
5530 | FIELD_BITSIZE (*fp) = 0; | |
5531 | } | |
5532 | ||
5533 | /* Get bit offset of field. */ | |
e142c38c | 5534 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
5535 | if (attr) |
5536 | { | |
d4b96c9a | 5537 | int byte_offset = 0; |
c6a0999f | 5538 | |
3690dd37 | 5539 | if (attr_form_is_section_offset (attr)) |
d4b96c9a | 5540 | dwarf2_complex_location_expr_complaint (); |
3690dd37 | 5541 | else if (attr_form_is_constant (attr)) |
c6a0999f | 5542 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
d4b96c9a | 5543 | else if (attr_form_is_block (attr)) |
c6a0999f | 5544 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
d4b96c9a JK |
5545 | else |
5546 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 5547 | |
d6a843b5 | 5548 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); |
c906108c | 5549 | } |
e142c38c | 5550 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
5551 | if (attr) |
5552 | { | |
5e2b427d | 5553 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
5554 | { |
5555 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
5556 | additional bit offset from the MSB of the containing |
5557 | anonymous object to the MSB of the field. We don't | |
5558 | have to do anything special since we don't need to | |
5559 | know the size of the anonymous object. */ | |
c906108c SS |
5560 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
5561 | } | |
5562 | else | |
5563 | { | |
5564 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
5565 | MSB of the anonymous object, subtract off the number of |
5566 | bits from the MSB of the field to the MSB of the | |
5567 | object, and then subtract off the number of bits of | |
5568 | the field itself. The result is the bit offset of | |
5569 | the LSB of the field. */ | |
c906108c SS |
5570 | int anonymous_size; |
5571 | int bit_offset = DW_UNSND (attr); | |
5572 | ||
e142c38c | 5573 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
5574 | if (attr) |
5575 | { | |
5576 | /* The size of the anonymous object containing | |
5577 | the bit field is explicit, so use the | |
5578 | indicated size (in bytes). */ | |
5579 | anonymous_size = DW_UNSND (attr); | |
5580 | } | |
5581 | else | |
5582 | { | |
5583 | /* The size of the anonymous object containing | |
5584 | the bit field must be inferred from the type | |
5585 | attribute of the data member containing the | |
5586 | bit field. */ | |
5587 | anonymous_size = TYPE_LENGTH (fp->type); | |
5588 | } | |
5589 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
5590 | - bit_offset - FIELD_BITSIZE (*fp); | |
5591 | } | |
5592 | } | |
5593 | ||
5594 | /* Get name of field. */ | |
39cbfefa DJ |
5595 | fieldname = dwarf2_name (die, cu); |
5596 | if (fieldname == NULL) | |
5597 | fieldname = ""; | |
d8151005 DJ |
5598 | |
5599 | /* The name is already allocated along with this objfile, so we don't | |
5600 | need to duplicate it for the type. */ | |
5601 | fp->name = fieldname; | |
c906108c SS |
5602 | |
5603 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 5604 | pointer or virtual base class pointer) to private. */ |
e142c38c | 5605 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 5606 | { |
d48cc9dd | 5607 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
5608 | new_field->accessibility = DW_ACCESS_private; |
5609 | fip->non_public_fields = 1; | |
5610 | } | |
5611 | } | |
a9a9bd0f | 5612 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 5613 | { |
a9a9bd0f DC |
5614 | /* C++ static member. */ |
5615 | ||
5616 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
5617 | is a declaration, but all versions of G++ as of this writing | |
5618 | (so through at least 3.2.1) incorrectly generate | |
5619 | DW_TAG_variable tags. */ | |
6e70227d | 5620 | |
c906108c | 5621 | char *physname; |
c906108c | 5622 | |
a9a9bd0f | 5623 | /* Get name of field. */ |
39cbfefa DJ |
5624 | fieldname = dwarf2_name (die, cu); |
5625 | if (fieldname == NULL) | |
c906108c SS |
5626 | return; |
5627 | ||
254e6b9e | 5628 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
5629 | if (attr |
5630 | /* Only create a symbol if this is an external value. | |
5631 | new_symbol checks this and puts the value in the global symbol | |
5632 | table, which we want. If it is not external, new_symbol | |
5633 | will try to put the value in cu->list_in_scope which is wrong. */ | |
5634 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
5635 | { |
5636 | /* A static const member, not much different than an enum as far as | |
5637 | we're concerned, except that we can support more types. */ | |
5638 | new_symbol (die, NULL, cu); | |
5639 | } | |
5640 | ||
2df3850c | 5641 | /* Get physical name. */ |
94af9270 | 5642 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c | 5643 | |
d8151005 DJ |
5644 | /* The name is already allocated along with this objfile, so we don't |
5645 | need to duplicate it for the type. */ | |
5646 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 5647 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 5648 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
5649 | } |
5650 | else if (die->tag == DW_TAG_inheritance) | |
5651 | { | |
5652 | /* C++ base class field. */ | |
e142c38c | 5653 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 5654 | if (attr) |
d4b96c9a JK |
5655 | { |
5656 | int byte_offset = 0; | |
5657 | ||
5658 | if (attr_form_is_section_offset (attr)) | |
5659 | dwarf2_complex_location_expr_complaint (); | |
5660 | else if (attr_form_is_constant (attr)) | |
5661 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
5662 | else if (attr_form_is_block (attr)) | |
5663 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
5664 | else | |
5665 | dwarf2_complex_location_expr_complaint (); | |
5666 | ||
5667 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); | |
5668 | } | |
c906108c | 5669 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 5670 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
5671 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
5672 | fip->nbaseclasses++; | |
5673 | } | |
5674 | } | |
5675 | ||
98751a41 JK |
5676 | /* Add a typedef defined in the scope of the FIP's class. */ |
5677 | ||
5678 | static void | |
5679 | dwarf2_add_typedef (struct field_info *fip, struct die_info *die, | |
5680 | struct dwarf2_cu *cu) | |
6e70227d | 5681 | { |
98751a41 JK |
5682 | struct objfile *objfile = cu->objfile; |
5683 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
5684 | struct typedef_field_list *new_field; | |
5685 | struct attribute *attr; | |
5686 | struct typedef_field *fp; | |
5687 | char *fieldname = ""; | |
5688 | ||
5689 | /* Allocate a new field list entry and link it in. */ | |
5690 | new_field = xzalloc (sizeof (*new_field)); | |
5691 | make_cleanup (xfree, new_field); | |
5692 | ||
5693 | gdb_assert (die->tag == DW_TAG_typedef); | |
5694 | ||
5695 | fp = &new_field->field; | |
5696 | ||
5697 | /* Get name of field. */ | |
5698 | fp->name = dwarf2_name (die, cu); | |
5699 | if (fp->name == NULL) | |
5700 | return; | |
5701 | ||
5702 | fp->type = read_type_die (die, cu); | |
5703 | ||
5704 | new_field->next = fip->typedef_field_list; | |
5705 | fip->typedef_field_list = new_field; | |
5706 | fip->typedef_field_list_count++; | |
5707 | } | |
5708 | ||
c906108c SS |
5709 | /* Create the vector of fields, and attach it to the type. */ |
5710 | ||
5711 | static void | |
fba45db2 | 5712 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 5713 | struct dwarf2_cu *cu) |
c906108c SS |
5714 | { |
5715 | int nfields = fip->nfields; | |
5716 | ||
5717 | /* Record the field count, allocate space for the array of fields, | |
5718 | and create blank accessibility bitfields if necessary. */ | |
5719 | TYPE_NFIELDS (type) = nfields; | |
5720 | TYPE_FIELDS (type) = (struct field *) | |
5721 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
5722 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
5723 | ||
b4ba55a1 | 5724 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
5725 | { |
5726 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
5727 | ||
5728 | TYPE_FIELD_PRIVATE_BITS (type) = | |
5729 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
5730 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
5731 | ||
5732 | TYPE_FIELD_PROTECTED_BITS (type) = | |
5733 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
5734 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
5735 | ||
5736 | TYPE_FIELD_IGNORE_BITS (type) = | |
5737 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
5738 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
5739 | } | |
5740 | ||
5741 | /* If the type has baseclasses, allocate and clear a bit vector for | |
5742 | TYPE_FIELD_VIRTUAL_BITS. */ | |
b4ba55a1 | 5743 | if (fip->nbaseclasses && cu->language != language_ada) |
c906108c SS |
5744 | { |
5745 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 5746 | unsigned char *pointer; |
c906108c SS |
5747 | |
5748 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
5749 | pointer = TYPE_ALLOC (type, num_bytes); |
5750 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
5751 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
5752 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
5753 | } | |
5754 | ||
5755 | /* Copy the saved-up fields into the field vector. Start from the head | |
5756 | of the list, adding to the tail of the field array, so that they end | |
5757 | up in the same order in the array in which they were added to the list. */ | |
5758 | while (nfields-- > 0) | |
5759 | { | |
7d0ccb61 DJ |
5760 | struct nextfield *fieldp; |
5761 | ||
5762 | if (fip->fields) | |
5763 | { | |
5764 | fieldp = fip->fields; | |
5765 | fip->fields = fieldp->next; | |
5766 | } | |
5767 | else | |
5768 | { | |
5769 | fieldp = fip->baseclasses; | |
5770 | fip->baseclasses = fieldp->next; | |
5771 | } | |
5772 | ||
5773 | TYPE_FIELD (type, nfields) = fieldp->field; | |
5774 | switch (fieldp->accessibility) | |
c906108c | 5775 | { |
c5aa993b | 5776 | case DW_ACCESS_private: |
b4ba55a1 JB |
5777 | if (cu->language != language_ada) |
5778 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
c5aa993b | 5779 | break; |
c906108c | 5780 | |
c5aa993b | 5781 | case DW_ACCESS_protected: |
b4ba55a1 JB |
5782 | if (cu->language != language_ada) |
5783 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
c5aa993b | 5784 | break; |
c906108c | 5785 | |
c5aa993b JM |
5786 | case DW_ACCESS_public: |
5787 | break; | |
c906108c | 5788 | |
c5aa993b JM |
5789 | default: |
5790 | /* Unknown accessibility. Complain and treat it as public. */ | |
5791 | { | |
e2e0b3e5 | 5792 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
7d0ccb61 | 5793 | fieldp->accessibility); |
c5aa993b JM |
5794 | } |
5795 | break; | |
c906108c SS |
5796 | } |
5797 | if (nfields < fip->nbaseclasses) | |
5798 | { | |
7d0ccb61 | 5799 | switch (fieldp->virtuality) |
c906108c | 5800 | { |
c5aa993b JM |
5801 | case DW_VIRTUALITY_virtual: |
5802 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 JB |
5803 | if (cu->language == language_ada) |
5804 | error ("unexpected virtuality in component of Ada type"); | |
c5aa993b JM |
5805 | SET_TYPE_FIELD_VIRTUAL (type, nfields); |
5806 | break; | |
c906108c SS |
5807 | } |
5808 | } | |
c906108c SS |
5809 | } |
5810 | } | |
5811 | ||
c906108c SS |
5812 | /* Add a member function to the proper fieldlist. */ |
5813 | ||
5814 | static void | |
107d2387 | 5815 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 5816 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 5817 | { |
e7c27a73 | 5818 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5819 | struct attribute *attr; |
5820 | struct fnfieldlist *flp; | |
5821 | int i; | |
5822 | struct fn_field *fnp; | |
5823 | char *fieldname; | |
5824 | char *physname; | |
5825 | struct nextfnfield *new_fnfield; | |
f792889a | 5826 | struct type *this_type; |
c906108c | 5827 | |
b4ba55a1 JB |
5828 | if (cu->language == language_ada) |
5829 | error ("unexpected member function in Ada type"); | |
5830 | ||
2df3850c | 5831 | /* Get name of member function. */ |
39cbfefa DJ |
5832 | fieldname = dwarf2_name (die, cu); |
5833 | if (fieldname == NULL) | |
2df3850c | 5834 | return; |
c906108c | 5835 | |
2df3850c | 5836 | /* Get the mangled name. */ |
94af9270 | 5837 | physname = (char *) dwarf2_physname (fieldname, die, cu); |
c906108c SS |
5838 | |
5839 | /* Look up member function name in fieldlist. */ | |
5840 | for (i = 0; i < fip->nfnfields; i++) | |
5841 | { | |
27bfe10e | 5842 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
5843 | break; |
5844 | } | |
5845 | ||
5846 | /* Create new list element if necessary. */ | |
5847 | if (i < fip->nfnfields) | |
5848 | flp = &fip->fnfieldlists[i]; | |
5849 | else | |
5850 | { | |
5851 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
5852 | { | |
5853 | fip->fnfieldlists = (struct fnfieldlist *) | |
5854 | xrealloc (fip->fnfieldlists, | |
5855 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 5856 | * sizeof (struct fnfieldlist)); |
c906108c | 5857 | if (fip->nfnfields == 0) |
c13c43fd | 5858 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
5859 | } |
5860 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
5861 | flp->name = fieldname; | |
5862 | flp->length = 0; | |
5863 | flp->head = NULL; | |
5864 | fip->nfnfields++; | |
5865 | } | |
5866 | ||
5867 | /* Create a new member function field and chain it to the field list | |
5868 | entry. */ | |
5869 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 5870 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
5871 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
5872 | new_fnfield->next = flp->head; | |
5873 | flp->head = new_fnfield; | |
5874 | flp->length++; | |
5875 | ||
5876 | /* Fill in the member function field info. */ | |
5877 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
5878 | /* The name is already allocated along with this objfile, so we don't |
5879 | need to duplicate it for the type. */ | |
5880 | fnp->physname = physname ? physname : ""; | |
c906108c | 5881 | fnp->type = alloc_type (objfile); |
f792889a DJ |
5882 | this_type = read_type_die (die, cu); |
5883 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 5884 | { |
f792889a | 5885 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 5886 | |
f792889a | 5887 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
5888 | of the method itself (TYPE_CODE_METHOD). */ |
5889 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
5890 | TYPE_TARGET_TYPE (this_type), |
5891 | TYPE_FIELDS (this_type), | |
5892 | TYPE_NFIELDS (this_type), | |
5893 | TYPE_VARARGS (this_type)); | |
c906108c SS |
5894 | |
5895 | /* Handle static member functions. | |
c5aa993b JM |
5896 | Dwarf2 has no clean way to discern C++ static and non-static |
5897 | member functions. G++ helps GDB by marking the first | |
5898 | parameter for non-static member functions (which is the | |
5899 | this pointer) as artificial. We obtain this information | |
5900 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 5901 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
5902 | fnp->voffset = VOFFSET_STATIC; |
5903 | } | |
5904 | else | |
e2e0b3e5 | 5905 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 5906 | physname); |
c906108c SS |
5907 | |
5908 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 5909 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 5910 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
5911 | |
5912 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
5913 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
5914 | ||
5915 | /* Get accessibility. */ | |
e142c38c | 5916 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
5917 | if (attr) |
5918 | { | |
5919 | switch (DW_UNSND (attr)) | |
5920 | { | |
c5aa993b JM |
5921 | case DW_ACCESS_private: |
5922 | fnp->is_private = 1; | |
5923 | break; | |
5924 | case DW_ACCESS_protected: | |
5925 | fnp->is_protected = 1; | |
5926 | break; | |
c906108c SS |
5927 | } |
5928 | } | |
5929 | ||
b02dede2 | 5930 | /* Check for artificial methods. */ |
e142c38c | 5931 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
5932 | if (attr && DW_UNSND (attr) != 0) |
5933 | fnp->is_artificial = 1; | |
5934 | ||
0d564a31 | 5935 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
5936 | function. For older versions of GCC, this is an offset in the |
5937 | appropriate virtual table, as specified by DW_AT_containing_type. | |
5938 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
5939 | to the object address. */ |
5940 | ||
e142c38c | 5941 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 5942 | if (attr) |
8e19ed76 | 5943 | { |
aec5aa8b | 5944 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 5945 | { |
aec5aa8b TT |
5946 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
5947 | { | |
5948 | /* Old-style GCC. */ | |
5949 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
5950 | } | |
5951 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
5952 | || (DW_BLOCK (attr)->size > 1 | |
5953 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
5954 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
5955 | { | |
5956 | struct dwarf_block blk; | |
5957 | int offset; | |
5958 | ||
5959 | offset = (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
5960 | ? 1 : 2); | |
5961 | blk.size = DW_BLOCK (attr)->size - offset; | |
5962 | blk.data = DW_BLOCK (attr)->data + offset; | |
5963 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); | |
5964 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
5965 | dwarf2_complex_location_expr_complaint (); | |
5966 | else | |
5967 | fnp->voffset /= cu->header.addr_size; | |
5968 | fnp->voffset += 2; | |
5969 | } | |
5970 | else | |
5971 | dwarf2_complex_location_expr_complaint (); | |
5972 | ||
5973 | if (!fnp->fcontext) | |
5974 | fnp->fcontext = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
5975 | } | |
3690dd37 | 5976 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 5977 | { |
4d3c2250 | 5978 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5979 | } |
5980 | else | |
5981 | { | |
4d3c2250 KB |
5982 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
5983 | fieldname); | |
8e19ed76 | 5984 | } |
0d564a31 | 5985 | } |
d48cc9dd DJ |
5986 | else |
5987 | { | |
5988 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
5989 | if (attr && DW_UNSND (attr)) | |
5990 | { | |
5991 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
5992 | complaint (&symfile_complaints, | |
5993 | _("Member function \"%s\" (offset %d) is virtual but the vtable offset is not specified"), | |
5994 | fieldname, die->offset); | |
9655fd1a | 5995 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
5996 | TYPE_CPLUS_DYNAMIC (type) = 1; |
5997 | } | |
5998 | } | |
c906108c SS |
5999 | } |
6000 | ||
6001 | /* Create the vector of member function fields, and attach it to the type. */ | |
6002 | ||
6003 | static void | |
fba45db2 | 6004 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 6005 | struct dwarf2_cu *cu) |
c906108c SS |
6006 | { |
6007 | struct fnfieldlist *flp; | |
6008 | int total_length = 0; | |
6009 | int i; | |
6010 | ||
b4ba55a1 JB |
6011 | if (cu->language == language_ada) |
6012 | error ("unexpected member functions in Ada type"); | |
6013 | ||
c906108c SS |
6014 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
6015 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
6016 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
6017 | ||
6018 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
6019 | { | |
6020 | struct nextfnfield *nfp = flp->head; | |
6021 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
6022 | int k; | |
6023 | ||
6024 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
6025 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
6026 | fn_flp->fn_fields = (struct fn_field *) | |
6027 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
6028 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 6029 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
6030 | |
6031 | total_length += flp->length; | |
6032 | } | |
6033 | ||
6034 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
6035 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
6036 | } | |
6037 | ||
1168df01 JB |
6038 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
6039 | language, zero otherwise. */ | |
6040 | static int | |
6041 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
6042 | { | |
6043 | static const char vptr[] = "_vptr"; | |
987504bb | 6044 | static const char vtable[] = "vtable"; |
1168df01 | 6045 | |
987504bb JJ |
6046 | /* Look for the C++ and Java forms of the vtable. */ |
6047 | if ((cu->language == language_java | |
6048 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
6049 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
6050 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
6051 | return 1; |
6052 | ||
6053 | return 0; | |
6054 | } | |
6055 | ||
c0dd20ea | 6056 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
6057 | functions, with the ABI-specified layout. If TYPE describes |
6058 | such a structure, smash it into a member function type. | |
61049d3b DJ |
6059 | |
6060 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
6061 | This is GCC PR debug/28767. */ | |
c0dd20ea | 6062 | |
0b92b5bb TT |
6063 | static void |
6064 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 6065 | { |
0b92b5bb | 6066 | struct type *pfn_type, *domain_type, *new_type; |
c0dd20ea DJ |
6067 | |
6068 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
6069 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
6070 | return; | |
c0dd20ea DJ |
6071 | |
6072 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
6073 | if (TYPE_FIELD_NAME (type, 0) == NULL |
6074 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
6075 | || TYPE_FIELD_NAME (type, 1) == NULL | |
6076 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
6077 | return; | |
c0dd20ea DJ |
6078 | |
6079 | /* Find the type of the method. */ | |
0b92b5bb | 6080 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
6081 | if (pfn_type == NULL |
6082 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
6083 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 6084 | return; |
c0dd20ea DJ |
6085 | |
6086 | /* Look for the "this" argument. */ | |
6087 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
6088 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 6089 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 6090 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 6091 | return; |
c0dd20ea DJ |
6092 | |
6093 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
0b92b5bb TT |
6094 | new_type = alloc_type (objfile); |
6095 | smash_to_method_type (new_type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
c0dd20ea DJ |
6096 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
6097 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 6098 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 6099 | } |
1168df01 | 6100 | |
c906108c SS |
6101 | /* Called when we find the DIE that starts a structure or union scope |
6102 | (definition) to process all dies that define the members of the | |
6103 | structure or union. | |
6104 | ||
6105 | NOTE: we need to call struct_type regardless of whether or not the | |
6106 | DIE has an at_name attribute, since it might be an anonymous | |
6107 | structure or union. This gets the type entered into our set of | |
6108 | user defined types. | |
6109 | ||
6110 | However, if the structure is incomplete (an opaque struct/union) | |
6111 | then suppress creating a symbol table entry for it since gdb only | |
6112 | wants to find the one with the complete definition. Note that if | |
6113 | it is complete, we just call new_symbol, which does it's own | |
6114 | checking about whether the struct/union is anonymous or not (and | |
6115 | suppresses creating a symbol table entry itself). */ | |
6116 | ||
f792889a | 6117 | static struct type * |
134d01f1 | 6118 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6119 | { |
e7c27a73 | 6120 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6121 | struct type *type; |
6122 | struct attribute *attr; | |
39cbfefa | 6123 | char *name; |
d3f41bb1 | 6124 | struct cleanup *back_to; |
c906108c | 6125 | |
348e048f DE |
6126 | /* If the definition of this type lives in .debug_types, read that type. |
6127 | Don't follow DW_AT_specification though, that will take us back up | |
6128 | the chain and we want to go down. */ | |
6129 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
6130 | if (attr) | |
6131 | { | |
6132 | struct dwarf2_cu *type_cu = cu; | |
6133 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 6134 | |
348e048f DE |
6135 | /* We could just recurse on read_structure_type, but we need to call |
6136 | get_die_type to ensure only one type for this DIE is created. | |
6137 | This is important, for example, because for c++ classes we need | |
6138 | TYPE_NAME set which is only done by new_symbol. Blech. */ | |
6139 | type = read_type_die (type_die, type_cu); | |
6140 | return set_die_type (die, type, cu); | |
6141 | } | |
6142 | ||
d3f41bb1 TT |
6143 | back_to = make_cleanup (null_cleanup, 0); |
6144 | ||
c0dd20ea | 6145 | type = alloc_type (objfile); |
c906108c | 6146 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 6147 | |
39cbfefa DJ |
6148 | name = dwarf2_name (die, cu); |
6149 | if (name != NULL) | |
c906108c | 6150 | { |
987504bb JJ |
6151 | if (cu->language == language_cplus |
6152 | || cu->language == language_java) | |
63d06c5c | 6153 | { |
94af9270 KS |
6154 | TYPE_TAG_NAME (type) = (char *) dwarf2_full_name (name, die, cu); |
6155 | if (die->tag == DW_TAG_structure_type | |
6156 | || die->tag == DW_TAG_class_type) | |
6157 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c DC |
6158 | } |
6159 | else | |
6160 | { | |
d8151005 DJ |
6161 | /* The name is already allocated along with this objfile, so |
6162 | we don't need to duplicate it for the type. */ | |
94af9270 KS |
6163 | TYPE_TAG_NAME (type) = (char *) name; |
6164 | if (die->tag == DW_TAG_class_type) | |
6165 | TYPE_NAME (type) = TYPE_TAG_NAME (type); | |
63d06c5c | 6166 | } |
c906108c SS |
6167 | } |
6168 | ||
6169 | if (die->tag == DW_TAG_structure_type) | |
6170 | { | |
6171 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
6172 | } | |
6173 | else if (die->tag == DW_TAG_union_type) | |
6174 | { | |
6175 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
6176 | } | |
6177 | else | |
6178 | { | |
c906108c SS |
6179 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
6180 | } | |
6181 | ||
0cc2414c TT |
6182 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
6183 | TYPE_DECLARED_CLASS (type) = 1; | |
6184 | ||
e142c38c | 6185 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6186 | if (attr) |
6187 | { | |
6188 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
6189 | } | |
6190 | else | |
6191 | { | |
6192 | TYPE_LENGTH (type) = 0; | |
6193 | } | |
6194 | ||
876cecd0 | 6195 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 6196 | if (die_is_declaration (die, cu)) |
876cecd0 | 6197 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
6198 | else if (attr == NULL && die->child == NULL |
6199 | && producer_is_realview (cu->producer)) | |
6200 | /* RealView does not output the required DW_AT_declaration | |
6201 | on incomplete types. */ | |
6202 | TYPE_STUB (type) = 1; | |
dc718098 | 6203 | |
c906108c SS |
6204 | /* We need to add the type field to the die immediately so we don't |
6205 | infinitely recurse when dealing with pointers to the structure | |
6206 | type within the structure itself. */ | |
1c379e20 | 6207 | set_die_type (die, type, cu); |
c906108c | 6208 | |
7e314c57 JK |
6209 | /* set_die_type should be already done. */ |
6210 | set_descriptive_type (type, die, cu); | |
6211 | ||
e142c38c | 6212 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
6213 | { |
6214 | struct field_info fi; | |
6215 | struct die_info *child_die; | |
c906108c SS |
6216 | |
6217 | memset (&fi, 0, sizeof (struct field_info)); | |
6218 | ||
639d11d3 | 6219 | child_die = die->child; |
c906108c SS |
6220 | |
6221 | while (child_die && child_die->tag) | |
6222 | { | |
a9a9bd0f DC |
6223 | if (child_die->tag == DW_TAG_member |
6224 | || child_die->tag == DW_TAG_variable) | |
c906108c | 6225 | { |
a9a9bd0f DC |
6226 | /* NOTE: carlton/2002-11-05: A C++ static data member |
6227 | should be a DW_TAG_member that is a declaration, but | |
6228 | all versions of G++ as of this writing (so through at | |
6229 | least 3.2.1) incorrectly generate DW_TAG_variable | |
6230 | tags for them instead. */ | |
e7c27a73 | 6231 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 6232 | } |
8713b1b1 | 6233 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
6234 | { |
6235 | /* C++ member function. */ | |
e7c27a73 | 6236 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
6237 | } |
6238 | else if (child_die->tag == DW_TAG_inheritance) | |
6239 | { | |
6240 | /* C++ base class field. */ | |
e7c27a73 | 6241 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 6242 | } |
98751a41 JK |
6243 | else if (child_die->tag == DW_TAG_typedef) |
6244 | dwarf2_add_typedef (&fi, child_die, cu); | |
c906108c SS |
6245 | child_die = sibling_die (child_die); |
6246 | } | |
6247 | ||
6248 | /* Attach fields and member functions to the type. */ | |
6249 | if (fi.nfields) | |
e7c27a73 | 6250 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
6251 | if (fi.nfnfields) |
6252 | { | |
e7c27a73 | 6253 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 6254 | |
c5aa993b | 6255 | /* Get the type which refers to the base class (possibly this |
c906108c | 6256 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
6257 | class from the DW_AT_containing_type attribute. This use of |
6258 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 6259 | |
e142c38c | 6260 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 6261 | { |
e7c27a73 | 6262 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
6263 | |
6264 | TYPE_VPTR_BASETYPE (type) = t; | |
6265 | if (type == t) | |
6266 | { | |
c906108c SS |
6267 | int i; |
6268 | ||
6269 | /* Our own class provides vtbl ptr. */ | |
6270 | for (i = TYPE_NFIELDS (t) - 1; | |
6271 | i >= TYPE_N_BASECLASSES (t); | |
6272 | --i) | |
6273 | { | |
6274 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
6275 | ||
1168df01 | 6276 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
6277 | { |
6278 | TYPE_VPTR_FIELDNO (type) = i; | |
6279 | break; | |
6280 | } | |
6281 | } | |
6282 | ||
6283 | /* Complain if virtual function table field not found. */ | |
6284 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 6285 | complaint (&symfile_complaints, |
e2e0b3e5 | 6286 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
6287 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
6288 | ""); | |
c906108c SS |
6289 | } |
6290 | else | |
6291 | { | |
6292 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
6293 | } | |
6294 | } | |
f6235d4c EZ |
6295 | else if (cu->producer |
6296 | && strncmp (cu->producer, | |
6297 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
6298 | { | |
6299 | /* The IBM XLC compiler does not provide direct indication | |
6300 | of the containing type, but the vtable pointer is | |
6301 | always named __vfp. */ | |
6302 | ||
6303 | int i; | |
6304 | ||
6305 | for (i = TYPE_NFIELDS (type) - 1; | |
6306 | i >= TYPE_N_BASECLASSES (type); | |
6307 | --i) | |
6308 | { | |
6309 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
6310 | { | |
6311 | TYPE_VPTR_FIELDNO (type) = i; | |
6312 | TYPE_VPTR_BASETYPE (type) = type; | |
6313 | break; | |
6314 | } | |
6315 | } | |
6316 | } | |
c906108c | 6317 | } |
98751a41 JK |
6318 | |
6319 | /* Copy fi.typedef_field_list linked list elements content into the | |
6320 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
6321 | if (fi.typedef_field_list) | |
6322 | { | |
6323 | int i = fi.typedef_field_list_count; | |
6324 | ||
a0d7a4ff | 6325 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 JK |
6326 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
6327 | = TYPE_ALLOC (type, sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * i); | |
6328 | TYPE_TYPEDEF_FIELD_COUNT (type) = i; | |
6329 | ||
6330 | /* Reverse the list order to keep the debug info elements order. */ | |
6331 | while (--i >= 0) | |
6332 | { | |
6333 | struct typedef_field *dest, *src; | |
6e70227d | 6334 | |
98751a41 JK |
6335 | dest = &TYPE_TYPEDEF_FIELD (type, i); |
6336 | src = &fi.typedef_field_list->field; | |
6337 | fi.typedef_field_list = fi.typedef_field_list->next; | |
6338 | *dest = *src; | |
6339 | } | |
6340 | } | |
c906108c | 6341 | } |
63d06c5c | 6342 | |
0b92b5bb TT |
6343 | quirk_gcc_member_function_pointer (type, cu->objfile); |
6344 | ||
0114d602 | 6345 | do_cleanups (back_to); |
f792889a | 6346 | return type; |
c906108c SS |
6347 | } |
6348 | ||
134d01f1 DJ |
6349 | static void |
6350 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6351 | { | |
90aeadfc | 6352 | struct die_info *child_die = die->child; |
f792889a | 6353 | struct type *this_type; |
c906108c | 6354 | |
f792889a DJ |
6355 | this_type = get_die_type (die, cu); |
6356 | if (this_type == NULL) | |
6357 | this_type = read_structure_type (die, cu); | |
c906108c | 6358 | |
90aeadfc DC |
6359 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
6360 | snapshots) has been known to create a die giving a declaration | |
6361 | for a class that has, as a child, a die giving a definition for a | |
6362 | nested class. So we have to process our children even if the | |
6363 | current die is a declaration. Normally, of course, a declaration | |
6364 | won't have any children at all. */ | |
134d01f1 | 6365 | |
90aeadfc DC |
6366 | while (child_die != NULL && child_die->tag) |
6367 | { | |
6368 | if (child_die->tag == DW_TAG_member | |
6369 | || child_die->tag == DW_TAG_variable | |
6370 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 6371 | { |
90aeadfc | 6372 | /* Do nothing. */ |
134d01f1 | 6373 | } |
90aeadfc DC |
6374 | else |
6375 | process_die (child_die, cu); | |
134d01f1 | 6376 | |
90aeadfc | 6377 | child_die = sibling_die (child_die); |
134d01f1 DJ |
6378 | } |
6379 | ||
fa4028e9 JB |
6380 | /* Do not consider external references. According to the DWARF standard, |
6381 | these DIEs are identified by the fact that they have no byte_size | |
6382 | attribute, and a declaration attribute. */ | |
6383 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
6384 | || !die_is_declaration (die, cu)) | |
f792889a | 6385 | new_symbol (die, this_type, cu); |
134d01f1 DJ |
6386 | } |
6387 | ||
6388 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
6389 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 6390 | |
f792889a | 6391 | static struct type * |
134d01f1 | 6392 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6393 | { |
e7c27a73 | 6394 | struct objfile *objfile = cu->objfile; |
c906108c | 6395 | struct type *type; |
c906108c | 6396 | struct attribute *attr; |
0114d602 | 6397 | const char *name; |
134d01f1 | 6398 | |
348e048f DE |
6399 | /* If the definition of this type lives in .debug_types, read that type. |
6400 | Don't follow DW_AT_specification though, that will take us back up | |
6401 | the chain and we want to go down. */ | |
6402 | attr = dwarf2_attr_no_follow (die, DW_AT_signature, cu); | |
6403 | if (attr) | |
6404 | { | |
6405 | struct dwarf2_cu *type_cu = cu; | |
6406 | struct die_info *type_die = follow_die_ref_or_sig (die, attr, &type_cu); | |
9a619af0 | 6407 | |
348e048f DE |
6408 | type = read_type_die (type_die, type_cu); |
6409 | return set_die_type (die, type, cu); | |
6410 | } | |
6411 | ||
c906108c SS |
6412 | type = alloc_type (objfile); |
6413 | ||
6414 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 6415 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 6416 | if (name != NULL) |
0114d602 | 6417 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 6418 | |
e142c38c | 6419 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6420 | if (attr) |
6421 | { | |
6422 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
6423 | } | |
6424 | else | |
6425 | { | |
6426 | TYPE_LENGTH (type) = 0; | |
6427 | } | |
6428 | ||
137033e9 JB |
6429 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
6430 | declared as private in the package spec, and then defined only | |
6431 | inside the package body. Such types are known as Taft Amendment | |
6432 | Types. When another package uses such a type, an incomplete DIE | |
6433 | may be generated by the compiler. */ | |
02eb380e | 6434 | if (die_is_declaration (die, cu)) |
876cecd0 | 6435 | TYPE_STUB (type) = 1; |
02eb380e | 6436 | |
f792889a | 6437 | return set_die_type (die, type, cu); |
134d01f1 DJ |
6438 | } |
6439 | ||
6440 | /* Given a pointer to a die which begins an enumeration, process all | |
6441 | the dies that define the members of the enumeration, and create the | |
6442 | symbol for the enumeration type. | |
6443 | ||
6444 | NOTE: We reverse the order of the element list. */ | |
6445 | ||
6446 | static void | |
6447 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
6448 | { | |
134d01f1 DJ |
6449 | struct die_info *child_die; |
6450 | struct field *fields; | |
134d01f1 DJ |
6451 | struct symbol *sym; |
6452 | int num_fields; | |
6453 | int unsigned_enum = 1; | |
39cbfefa | 6454 | char *name; |
f792889a | 6455 | struct type *this_type; |
134d01f1 | 6456 | |
c906108c SS |
6457 | num_fields = 0; |
6458 | fields = NULL; | |
f792889a DJ |
6459 | this_type = get_die_type (die, cu); |
6460 | if (this_type == NULL) | |
6461 | this_type = read_enumeration_type (die, cu); | |
639d11d3 | 6462 | if (die->child != NULL) |
c906108c | 6463 | { |
639d11d3 | 6464 | child_die = die->child; |
c906108c SS |
6465 | while (child_die && child_die->tag) |
6466 | { | |
6467 | if (child_die->tag != DW_TAG_enumerator) | |
6468 | { | |
e7c27a73 | 6469 | process_die (child_die, cu); |
c906108c SS |
6470 | } |
6471 | else | |
6472 | { | |
39cbfefa DJ |
6473 | name = dwarf2_name (child_die, cu); |
6474 | if (name) | |
c906108c | 6475 | { |
f792889a | 6476 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
6477 | if (SYMBOL_VALUE (sym) < 0) |
6478 | unsigned_enum = 0; | |
6479 | ||
6480 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
6481 | { | |
6482 | fields = (struct field *) | |
6483 | xrealloc (fields, | |
6484 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 6485 | * sizeof (struct field)); |
c906108c SS |
6486 | } |
6487 | ||
3567439c | 6488 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 6489 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 6490 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
6491 | FIELD_BITSIZE (fields[num_fields]) = 0; |
6492 | ||
6493 | num_fields++; | |
6494 | } | |
6495 | } | |
6496 | ||
6497 | child_die = sibling_die (child_die); | |
6498 | } | |
6499 | ||
6500 | if (num_fields) | |
6501 | { | |
f792889a DJ |
6502 | TYPE_NFIELDS (this_type) = num_fields; |
6503 | TYPE_FIELDS (this_type) = (struct field *) | |
6504 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
6505 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 6506 | sizeof (struct field) * num_fields); |
b8c9b27d | 6507 | xfree (fields); |
c906108c SS |
6508 | } |
6509 | if (unsigned_enum) | |
876cecd0 | 6510 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 6511 | } |
134d01f1 | 6512 | |
f792889a | 6513 | new_symbol (die, this_type, cu); |
c906108c SS |
6514 | } |
6515 | ||
6516 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
6517 | the DIE's type field. For now, this only handles one dimensional | |
6518 | arrays. */ | |
6519 | ||
f792889a | 6520 | static struct type * |
e7c27a73 | 6521 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6522 | { |
e7c27a73 | 6523 | struct objfile *objfile = cu->objfile; |
c906108c | 6524 | struct die_info *child_die; |
7e314c57 | 6525 | struct type *type; |
c906108c SS |
6526 | struct type *element_type, *range_type, *index_type; |
6527 | struct type **range_types = NULL; | |
6528 | struct attribute *attr; | |
6529 | int ndim = 0; | |
6530 | struct cleanup *back_to; | |
39cbfefa | 6531 | char *name; |
c906108c | 6532 | |
e7c27a73 | 6533 | element_type = die_type (die, cu); |
c906108c | 6534 | |
7e314c57 JK |
6535 | /* The die_type call above may have already set the type for this DIE. */ |
6536 | type = get_die_type (die, cu); | |
6537 | if (type) | |
6538 | return type; | |
6539 | ||
c906108c SS |
6540 | /* Irix 6.2 native cc creates array types without children for |
6541 | arrays with unspecified length. */ | |
639d11d3 | 6542 | if (die->child == NULL) |
c906108c | 6543 | { |
46bf5051 | 6544 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 6545 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
6546 | type = create_array_type (NULL, element_type, range_type); |
6547 | return set_die_type (die, type, cu); | |
c906108c SS |
6548 | } |
6549 | ||
6550 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 6551 | child_die = die->child; |
c906108c SS |
6552 | while (child_die && child_die->tag) |
6553 | { | |
6554 | if (child_die->tag == DW_TAG_subrange_type) | |
6555 | { | |
f792889a | 6556 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 6557 | |
f792889a | 6558 | if (child_type != NULL) |
a02abb62 JB |
6559 | { |
6560 | /* The range type was succesfully read. Save it for | |
6561 | the array type creation. */ | |
6562 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
6563 | { | |
6564 | range_types = (struct type **) | |
6565 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
6566 | * sizeof (struct type *)); | |
6567 | if (ndim == 0) | |
6568 | make_cleanup (free_current_contents, &range_types); | |
6569 | } | |
f792889a | 6570 | range_types[ndim++] = child_type; |
a02abb62 | 6571 | } |
c906108c SS |
6572 | } |
6573 | child_die = sibling_die (child_die); | |
6574 | } | |
6575 | ||
6576 | /* Dwarf2 dimensions are output from left to right, create the | |
6577 | necessary array types in backwards order. */ | |
7ca2d3a3 | 6578 | |
c906108c | 6579 | type = element_type; |
7ca2d3a3 DL |
6580 | |
6581 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
6582 | { | |
6583 | int i = 0; | |
9a619af0 | 6584 | |
7ca2d3a3 DL |
6585 | while (i < ndim) |
6586 | type = create_array_type (NULL, type, range_types[i++]); | |
6587 | } | |
6588 | else | |
6589 | { | |
6590 | while (ndim-- > 0) | |
6591 | type = create_array_type (NULL, type, range_types[ndim]); | |
6592 | } | |
c906108c | 6593 | |
f5f8a009 EZ |
6594 | /* Understand Dwarf2 support for vector types (like they occur on |
6595 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
6596 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
6597 | custom vendor extension. The main difference between a regular | |
6598 | array and the vector variant is that vectors are passed by value | |
6599 | to functions. */ | |
e142c38c | 6600 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 6601 | if (attr) |
ea37ba09 | 6602 | make_vector_type (type); |
f5f8a009 | 6603 | |
39cbfefa DJ |
6604 | name = dwarf2_name (die, cu); |
6605 | if (name) | |
6606 | TYPE_NAME (type) = name; | |
6e70227d | 6607 | |
7e314c57 JK |
6608 | /* Install the type in the die. */ |
6609 | set_die_type (die, type, cu); | |
6610 | ||
6611 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
6612 | set_descriptive_type (type, die, cu); |
6613 | ||
c906108c SS |
6614 | do_cleanups (back_to); |
6615 | ||
7e314c57 | 6616 | return type; |
c906108c SS |
6617 | } |
6618 | ||
7ca2d3a3 | 6619 | static enum dwarf_array_dim_ordering |
6e70227d | 6620 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
6621 | { |
6622 | struct attribute *attr; | |
6623 | ||
6624 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
6625 | ||
6626 | if (attr) return DW_SND (attr); | |
6627 | ||
6628 | /* | |
6629 | GNU F77 is a special case, as at 08/2004 array type info is the | |
6e70227d | 6630 | opposite order to the dwarf2 specification, but data is still |
7ca2d3a3 DL |
6631 | laid out as per normal fortran. |
6632 | ||
6e70227d | 6633 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
7ca2d3a3 DL |
6634 | version checking. |
6635 | */ | |
6636 | ||
905e0470 PM |
6637 | if (cu->language == language_fortran |
6638 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
6639 | { |
6640 | return DW_ORD_row_major; | |
6641 | } | |
6642 | ||
6e70227d | 6643 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
6644 | { |
6645 | case array_column_major: | |
6646 | return DW_ORD_col_major; | |
6647 | case array_row_major: | |
6648 | default: | |
6649 | return DW_ORD_row_major; | |
6650 | }; | |
6651 | } | |
6652 | ||
72019c9c GM |
6653 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
6654 | the DIE's type field. */ | |
6655 | ||
f792889a | 6656 | static struct type * |
72019c9c GM |
6657 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
6658 | { | |
7e314c57 JK |
6659 | struct type *domain_type, *set_type; |
6660 | struct attribute *attr; | |
f792889a | 6661 | |
7e314c57 JK |
6662 | domain_type = die_type (die, cu); |
6663 | ||
6664 | /* The die_type call above may have already set the type for this DIE. */ | |
6665 | set_type = get_die_type (die, cu); | |
6666 | if (set_type) | |
6667 | return set_type; | |
6668 | ||
6669 | set_type = create_set_type (NULL, domain_type); | |
6670 | ||
6671 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
6672 | if (attr) |
6673 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 6674 | |
f792889a | 6675 | return set_die_type (die, set_type, cu); |
72019c9c | 6676 | } |
7ca2d3a3 | 6677 | |
c906108c SS |
6678 | /* First cut: install each common block member as a global variable. */ |
6679 | ||
6680 | static void | |
e7c27a73 | 6681 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6682 | { |
6683 | struct die_info *child_die; | |
6684 | struct attribute *attr; | |
6685 | struct symbol *sym; | |
6686 | CORE_ADDR base = (CORE_ADDR) 0; | |
6687 | ||
e142c38c | 6688 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
6689 | if (attr) |
6690 | { | |
8e19ed76 PS |
6691 | /* Support the .debug_loc offsets */ |
6692 | if (attr_form_is_block (attr)) | |
6693 | { | |
e7c27a73 | 6694 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 6695 | } |
3690dd37 | 6696 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 6697 | { |
4d3c2250 | 6698 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
6699 | } |
6700 | else | |
6701 | { | |
4d3c2250 KB |
6702 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
6703 | "common block member"); | |
8e19ed76 | 6704 | } |
c906108c | 6705 | } |
639d11d3 | 6706 | if (die->child != NULL) |
c906108c | 6707 | { |
639d11d3 | 6708 | child_die = die->child; |
c906108c SS |
6709 | while (child_die && child_die->tag) |
6710 | { | |
e7c27a73 | 6711 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 6712 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
6713 | if (attr) |
6714 | { | |
d4b96c9a JK |
6715 | CORE_ADDR byte_offset = 0; |
6716 | ||
6717 | if (attr_form_is_section_offset (attr)) | |
6718 | dwarf2_complex_location_expr_complaint (); | |
6719 | else if (attr_form_is_constant (attr)) | |
6720 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); | |
6721 | else if (attr_form_is_block (attr)) | |
6722 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); | |
6723 | else | |
6724 | dwarf2_complex_location_expr_complaint (); | |
6725 | ||
6726 | SYMBOL_VALUE_ADDRESS (sym) = base + byte_offset; | |
c906108c SS |
6727 | add_symbol_to_list (sym, &global_symbols); |
6728 | } | |
6729 | child_die = sibling_die (child_die); | |
6730 | } | |
6731 | } | |
6732 | } | |
6733 | ||
0114d602 | 6734 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 6735 | |
0114d602 DJ |
6736 | static struct type * |
6737 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 6738 | { |
e7c27a73 | 6739 | struct objfile *objfile = cu->objfile; |
0114d602 | 6740 | const char *previous_prefix, *name; |
9219021c | 6741 | int is_anonymous; |
0114d602 DJ |
6742 | struct type *type; |
6743 | ||
6744 | /* For extensions, reuse the type of the original namespace. */ | |
6745 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
6746 | { | |
6747 | struct die_info *ext_die; | |
6748 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 6749 | |
0114d602 DJ |
6750 | ext_die = dwarf2_extension (die, &ext_cu); |
6751 | type = read_type_die (ext_die, ext_cu); | |
6752 | return set_die_type (die, type, cu); | |
6753 | } | |
9219021c | 6754 | |
e142c38c | 6755 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
6756 | |
6757 | /* Now build the name of the current namespace. */ | |
6758 | ||
0114d602 DJ |
6759 | previous_prefix = determine_prefix (die, cu); |
6760 | if (previous_prefix[0] != '\0') | |
6761 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 6762 | previous_prefix, name, 0, cu); |
0114d602 DJ |
6763 | |
6764 | /* Create the type. */ | |
6765 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
6766 | objfile); | |
6767 | TYPE_NAME (type) = (char *) name; | |
6768 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
6769 | ||
60531b24 | 6770 | return set_die_type (die, type, cu); |
0114d602 DJ |
6771 | } |
6772 | ||
6773 | /* Read a C++ namespace. */ | |
6774 | ||
6775 | static void | |
6776 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
6777 | { | |
6778 | struct objfile *objfile = cu->objfile; | |
6779 | const char *name; | |
6780 | int is_anonymous; | |
9219021c | 6781 | |
5c4e30ca DC |
6782 | /* Add a symbol associated to this if we haven't seen the namespace |
6783 | before. Also, add a using directive if it's an anonymous | |
6784 | namespace. */ | |
9219021c | 6785 | |
f2f0e013 | 6786 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
6787 | { |
6788 | struct type *type; | |
6789 | ||
0114d602 | 6790 | type = read_type_die (die, cu); |
e7c27a73 | 6791 | new_symbol (die, type, cu); |
5c4e30ca | 6792 | |
0114d602 | 6793 | name = namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 6794 | if (is_anonymous) |
0114d602 DJ |
6795 | { |
6796 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 6797 | |
c0cc3a76 | 6798 | cp_add_using_directive (previous_prefix, TYPE_NAME (type), NULL, |
13387711 | 6799 | NULL, &objfile->objfile_obstack); |
0114d602 | 6800 | } |
5c4e30ca | 6801 | } |
9219021c | 6802 | |
639d11d3 | 6803 | if (die->child != NULL) |
d9fa45fe | 6804 | { |
639d11d3 | 6805 | struct die_info *child_die = die->child; |
6e70227d | 6806 | |
d9fa45fe DC |
6807 | while (child_die && child_die->tag) |
6808 | { | |
e7c27a73 | 6809 | process_die (child_die, cu); |
d9fa45fe DC |
6810 | child_die = sibling_die (child_die); |
6811 | } | |
6812 | } | |
38d518c9 EZ |
6813 | } |
6814 | ||
f55ee35c JK |
6815 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
6816 | imported module. Still we need that type as local Fortran "use ... only" | |
6817 | declaration imports depend on the created type in determine_prefix. */ | |
6818 | ||
6819 | static struct type * | |
6820 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
6821 | { | |
6822 | struct objfile *objfile = cu->objfile; | |
6823 | char *module_name; | |
6824 | struct type *type; | |
6825 | ||
6826 | module_name = dwarf2_name (die, cu); | |
6827 | if (!module_name) | |
6828 | complaint (&symfile_complaints, _("DW_TAG_module has no name, offset 0x%x"), | |
6829 | die->offset); | |
6830 | type = init_type (TYPE_CODE_MODULE, 0, 0, module_name, objfile); | |
6831 | ||
6832 | /* determine_prefix uses TYPE_TAG_NAME. */ | |
6833 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
6834 | ||
6835 | return set_die_type (die, type, cu); | |
6836 | } | |
6837 | ||
5d7cb8df JK |
6838 | /* Read a Fortran module. */ |
6839 | ||
6840 | static void | |
6841 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
6842 | { | |
6843 | struct die_info *child_die = die->child; | |
6844 | ||
5d7cb8df JK |
6845 | while (child_die && child_die->tag) |
6846 | { | |
6847 | process_die (child_die, cu); | |
6848 | child_die = sibling_die (child_die); | |
6849 | } | |
6850 | } | |
6851 | ||
38d518c9 EZ |
6852 | /* Return the name of the namespace represented by DIE. Set |
6853 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
6854 | namespace. */ | |
6855 | ||
6856 | static const char * | |
e142c38c | 6857 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
6858 | { |
6859 | struct die_info *current_die; | |
6860 | const char *name = NULL; | |
6861 | ||
6862 | /* Loop through the extensions until we find a name. */ | |
6863 | ||
6864 | for (current_die = die; | |
6865 | current_die != NULL; | |
f2f0e013 | 6866 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 6867 | { |
e142c38c | 6868 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
6869 | if (name != NULL) |
6870 | break; | |
6871 | } | |
6872 | ||
6873 | /* Is it an anonymous namespace? */ | |
6874 | ||
6875 | *is_anonymous = (name == NULL); | |
6876 | if (*is_anonymous) | |
6877 | name = "(anonymous namespace)"; | |
6878 | ||
6879 | return name; | |
d9fa45fe DC |
6880 | } |
6881 | ||
c906108c SS |
6882 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
6883 | the user defined type vector. */ | |
6884 | ||
f792889a | 6885 | static struct type * |
e7c27a73 | 6886 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6887 | { |
5e2b427d | 6888 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 6889 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 6890 | struct type *type; |
8b2dbe47 KB |
6891 | struct attribute *attr_byte_size; |
6892 | struct attribute *attr_address_class; | |
6893 | int byte_size, addr_class; | |
7e314c57 JK |
6894 | struct type *target_type; |
6895 | ||
6896 | target_type = die_type (die, cu); | |
c906108c | 6897 | |
7e314c57 JK |
6898 | /* The die_type call above may have already set the type for this DIE. */ |
6899 | type = get_die_type (die, cu); | |
6900 | if (type) | |
6901 | return type; | |
6902 | ||
6903 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 6904 | |
e142c38c | 6905 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
6906 | if (attr_byte_size) |
6907 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 6908 | else |
8b2dbe47 KB |
6909 | byte_size = cu_header->addr_size; |
6910 | ||
e142c38c | 6911 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
6912 | if (attr_address_class) |
6913 | addr_class = DW_UNSND (attr_address_class); | |
6914 | else | |
6915 | addr_class = DW_ADDR_none; | |
6916 | ||
6917 | /* If the pointer size or address class is different than the | |
6918 | default, create a type variant marked as such and set the | |
6919 | length accordingly. */ | |
6920 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 6921 | { |
5e2b427d | 6922 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
6923 | { |
6924 | int type_flags; | |
6925 | ||
849957d9 | 6926 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 6927 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
6928 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
6929 | == 0); | |
8b2dbe47 KB |
6930 | type = make_type_with_address_space (type, type_flags); |
6931 | } | |
6932 | else if (TYPE_LENGTH (type) != byte_size) | |
6933 | { | |
e2e0b3e5 | 6934 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 | 6935 | } |
6e70227d | 6936 | else |
9a619af0 MS |
6937 | { |
6938 | /* Should we also complain about unhandled address classes? */ | |
6939 | } | |
c906108c | 6940 | } |
8b2dbe47 KB |
6941 | |
6942 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 6943 | return set_die_type (die, type, cu); |
c906108c SS |
6944 | } |
6945 | ||
6946 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
6947 | the user defined type vector. */ | |
6948 | ||
f792889a | 6949 | static struct type * |
e7c27a73 | 6950 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6951 | { |
6952 | struct type *type; | |
6953 | struct type *to_type; | |
6954 | struct type *domain; | |
6955 | ||
e7c27a73 DJ |
6956 | to_type = die_type (die, cu); |
6957 | domain = die_containing_type (die, cu); | |
0d5de010 | 6958 | |
7e314c57 JK |
6959 | /* The calls above may have already set the type for this DIE. */ |
6960 | type = get_die_type (die, cu); | |
6961 | if (type) | |
6962 | return type; | |
6963 | ||
0d5de010 DJ |
6964 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
6965 | type = lookup_methodptr_type (to_type); | |
6966 | else | |
6967 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 6968 | |
f792889a | 6969 | return set_die_type (die, type, cu); |
c906108c SS |
6970 | } |
6971 | ||
6972 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
6973 | the user defined type vector. */ | |
6974 | ||
f792889a | 6975 | static struct type * |
e7c27a73 | 6976 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6977 | { |
e7c27a73 | 6978 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 6979 | struct type *type, *target_type; |
c906108c SS |
6980 | struct attribute *attr; |
6981 | ||
7e314c57 JK |
6982 | target_type = die_type (die, cu); |
6983 | ||
6984 | /* The die_type call above may have already set the type for this DIE. */ | |
6985 | type = get_die_type (die, cu); | |
6986 | if (type) | |
6987 | return type; | |
6988 | ||
6989 | type = lookup_reference_type (target_type); | |
e142c38c | 6990 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
6991 | if (attr) |
6992 | { | |
6993 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
6994 | } | |
6995 | else | |
6996 | { | |
107d2387 | 6997 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 6998 | } |
f792889a | 6999 | return set_die_type (die, type, cu); |
c906108c SS |
7000 | } |
7001 | ||
f792889a | 7002 | static struct type * |
e7c27a73 | 7003 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7004 | { |
f792889a | 7005 | struct type *base_type, *cv_type; |
c906108c | 7006 | |
e7c27a73 | 7007 | base_type = die_type (die, cu); |
7e314c57 JK |
7008 | |
7009 | /* The die_type call above may have already set the type for this DIE. */ | |
7010 | cv_type = get_die_type (die, cu); | |
7011 | if (cv_type) | |
7012 | return cv_type; | |
7013 | ||
f792889a DJ |
7014 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
7015 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7016 | } |
7017 | ||
f792889a | 7018 | static struct type * |
e7c27a73 | 7019 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7020 | { |
f792889a | 7021 | struct type *base_type, *cv_type; |
c906108c | 7022 | |
e7c27a73 | 7023 | base_type = die_type (die, cu); |
7e314c57 JK |
7024 | |
7025 | /* The die_type call above may have already set the type for this DIE. */ | |
7026 | cv_type = get_die_type (die, cu); | |
7027 | if (cv_type) | |
7028 | return cv_type; | |
7029 | ||
f792889a DJ |
7030 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
7031 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
7032 | } |
7033 | ||
7034 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
7035 | the user defined type vector. It isn't really a user defined type, | |
7036 | but it behaves like one, with other DIE's using an AT_user_def_type | |
7037 | attribute to reference it. */ | |
7038 | ||
f792889a | 7039 | static struct type * |
e7c27a73 | 7040 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7041 | { |
e7c27a73 | 7042 | struct objfile *objfile = cu->objfile; |
3b7538c0 | 7043 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
7044 | struct type *type, *range_type, *index_type, *char_type; |
7045 | struct attribute *attr; | |
7046 | unsigned int length; | |
7047 | ||
e142c38c | 7048 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
7049 | if (attr) |
7050 | { | |
7051 | length = DW_UNSND (attr); | |
7052 | } | |
7053 | else | |
7054 | { | |
b21b22e0 | 7055 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 7056 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
7057 | if (attr) |
7058 | { | |
7059 | length = DW_UNSND (attr); | |
7060 | } | |
7061 | else | |
7062 | { | |
7063 | length = 1; | |
7064 | } | |
c906108c | 7065 | } |
6ccb9162 | 7066 | |
46bf5051 | 7067 | index_type = objfile_type (objfile)->builtin_int; |
c906108c | 7068 | range_type = create_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
7069 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
7070 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 7071 | |
f792889a | 7072 | return set_die_type (die, type, cu); |
c906108c SS |
7073 | } |
7074 | ||
7075 | /* Handle DIES due to C code like: | |
7076 | ||
7077 | struct foo | |
c5aa993b JM |
7078 | { |
7079 | int (*funcp)(int a, long l); | |
7080 | int b; | |
7081 | }; | |
c906108c SS |
7082 | |
7083 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 7084 | */ |
c906108c | 7085 | |
f792889a | 7086 | static struct type * |
e7c27a73 | 7087 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7088 | { |
7089 | struct type *type; /* Type that this function returns */ | |
7090 | struct type *ftype; /* Function that returns above type */ | |
7091 | struct attribute *attr; | |
7092 | ||
e7c27a73 | 7093 | type = die_type (die, cu); |
7e314c57 JK |
7094 | |
7095 | /* The die_type call above may have already set the type for this DIE. */ | |
7096 | ftype = get_die_type (die, cu); | |
7097 | if (ftype) | |
7098 | return ftype; | |
7099 | ||
0c8b41f1 | 7100 | ftype = lookup_function_type (type); |
c906108c | 7101 | |
5b8101ae | 7102 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 7103 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 7104 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 7105 | || cu->language == language_cplus |
5b8101ae PM |
7106 | || cu->language == language_java |
7107 | || cu->language == language_pascal) | |
876cecd0 | 7108 | TYPE_PROTOTYPED (ftype) = 1; |
a6c727b2 DJ |
7109 | else if (producer_is_realview (cu->producer)) |
7110 | /* RealView does not emit DW_AT_prototyped. We can not | |
7111 | distinguish prototyped and unprototyped functions; default to | |
7112 | prototyped, since that is more common in modern code (and | |
7113 | RealView warns about unprototyped functions). */ | |
7114 | TYPE_PROTOTYPED (ftype) = 1; | |
c906108c | 7115 | |
c055b101 CV |
7116 | /* Store the calling convention in the type if it's available in |
7117 | the subroutine die. Otherwise set the calling convention to | |
7118 | the default value DW_CC_normal. */ | |
7119 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
7120 | TYPE_CALLING_CONVENTION (ftype) = attr ? DW_UNSND (attr) : DW_CC_normal; | |
76c10ea2 GM |
7121 | |
7122 | /* We need to add the subroutine type to the die immediately so | |
7123 | we don't infinitely recurse when dealing with parameters | |
7124 | declared as the same subroutine type. */ | |
7125 | set_die_type (die, ftype, cu); | |
6e70227d | 7126 | |
639d11d3 | 7127 | if (die->child != NULL) |
c906108c | 7128 | { |
8072405b | 7129 | struct type *void_type = objfile_type (cu->objfile)->builtin_void; |
c906108c | 7130 | struct die_info *child_die; |
8072405b | 7131 | int nparams, iparams; |
c906108c SS |
7132 | |
7133 | /* Count the number of parameters. | |
7134 | FIXME: GDB currently ignores vararg functions, but knows about | |
7135 | vararg member functions. */ | |
8072405b | 7136 | nparams = 0; |
639d11d3 | 7137 | child_die = die->child; |
c906108c SS |
7138 | while (child_die && child_die->tag) |
7139 | { | |
7140 | if (child_die->tag == DW_TAG_formal_parameter) | |
7141 | nparams++; | |
7142 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 7143 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
7144 | child_die = sibling_die (child_die); |
7145 | } | |
7146 | ||
7147 | /* Allocate storage for parameters and fill them in. */ | |
7148 | TYPE_NFIELDS (ftype) = nparams; | |
7149 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 7150 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 7151 | |
8072405b JK |
7152 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
7153 | even if we error out during the parameters reading below. */ | |
7154 | for (iparams = 0; iparams < nparams; iparams++) | |
7155 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
7156 | ||
7157 | iparams = 0; | |
639d11d3 | 7158 | child_die = die->child; |
c906108c SS |
7159 | while (child_die && child_die->tag) |
7160 | { | |
7161 | if (child_die->tag == DW_TAG_formal_parameter) | |
7162 | { | |
7163 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
7164 | member functions. G++ helps GDB by marking the first |
7165 | parameter for non-static member functions (which is the | |
7166 | this pointer) as artificial. We pass this information | |
7167 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 7168 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
7169 | if (attr) |
7170 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
7171 | else | |
418835cc KS |
7172 | { |
7173 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
7174 | ||
7175 | /* GCC/43521: In java, the formal parameter | |
7176 | "this" is sometimes not marked with DW_AT_artificial. */ | |
7177 | if (cu->language == language_java) | |
7178 | { | |
7179 | const char *name = dwarf2_name (child_die, cu); | |
9a619af0 | 7180 | |
418835cc KS |
7181 | if (name && !strcmp (name, "this")) |
7182 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 1; | |
7183 | } | |
7184 | } | |
e7c27a73 | 7185 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
7186 | iparams++; |
7187 | } | |
7188 | child_die = sibling_die (child_die); | |
7189 | } | |
7190 | } | |
7191 | ||
76c10ea2 | 7192 | return ftype; |
c906108c SS |
7193 | } |
7194 | ||
f792889a | 7195 | static struct type * |
e7c27a73 | 7196 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7197 | { |
e7c27a73 | 7198 | struct objfile *objfile = cu->objfile; |
0114d602 | 7199 | const char *name = NULL; |
f792889a | 7200 | struct type *this_type; |
c906108c | 7201 | |
94af9270 | 7202 | name = dwarf2_full_name (NULL, die, cu); |
f792889a | 7203 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
7204 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
7205 | TYPE_NAME (this_type) = (char *) name; | |
f792889a DJ |
7206 | set_die_type (die, this_type, cu); |
7207 | TYPE_TARGET_TYPE (this_type) = die_type (die, cu); | |
7208 | return this_type; | |
c906108c SS |
7209 | } |
7210 | ||
7211 | /* Find a representation of a given base type and install | |
7212 | it in the TYPE field of the die. */ | |
7213 | ||
f792889a | 7214 | static struct type * |
e7c27a73 | 7215 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7216 | { |
e7c27a73 | 7217 | struct objfile *objfile = cu->objfile; |
c906108c SS |
7218 | struct type *type; |
7219 | struct attribute *attr; | |
7220 | int encoding = 0, size = 0; | |
39cbfefa | 7221 | char *name; |
6ccb9162 UW |
7222 | enum type_code code = TYPE_CODE_INT; |
7223 | int type_flags = 0; | |
7224 | struct type *target_type = NULL; | |
c906108c | 7225 | |
e142c38c | 7226 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
7227 | if (attr) |
7228 | { | |
7229 | encoding = DW_UNSND (attr); | |
7230 | } | |
e142c38c | 7231 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
7232 | if (attr) |
7233 | { | |
7234 | size = DW_UNSND (attr); | |
7235 | } | |
39cbfefa | 7236 | name = dwarf2_name (die, cu); |
6ccb9162 | 7237 | if (!name) |
c906108c | 7238 | { |
6ccb9162 UW |
7239 | complaint (&symfile_complaints, |
7240 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 7241 | } |
6ccb9162 UW |
7242 | |
7243 | switch (encoding) | |
c906108c | 7244 | { |
6ccb9162 UW |
7245 | case DW_ATE_address: |
7246 | /* Turn DW_ATE_address into a void * pointer. */ | |
7247 | code = TYPE_CODE_PTR; | |
7248 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7249 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
7250 | break; | |
7251 | case DW_ATE_boolean: | |
7252 | code = TYPE_CODE_BOOL; | |
7253 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7254 | break; | |
7255 | case DW_ATE_complex_float: | |
7256 | code = TYPE_CODE_COMPLEX; | |
7257 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
7258 | break; | |
7259 | case DW_ATE_decimal_float: | |
7260 | code = TYPE_CODE_DECFLOAT; | |
7261 | break; | |
7262 | case DW_ATE_float: | |
7263 | code = TYPE_CODE_FLT; | |
7264 | break; | |
7265 | case DW_ATE_signed: | |
7266 | break; | |
7267 | case DW_ATE_unsigned: | |
7268 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7269 | break; | |
7270 | case DW_ATE_signed_char: | |
6e70227d | 7271 | if (cu->language == language_ada || cu->language == language_m2 |
868a0084 | 7272 | || cu->language == language_pascal) |
6ccb9162 UW |
7273 | code = TYPE_CODE_CHAR; |
7274 | break; | |
7275 | case DW_ATE_unsigned_char: | |
868a0084 PM |
7276 | if (cu->language == language_ada || cu->language == language_m2 |
7277 | || cu->language == language_pascal) | |
6ccb9162 UW |
7278 | code = TYPE_CODE_CHAR; |
7279 | type_flags |= TYPE_FLAG_UNSIGNED; | |
7280 | break; | |
75079b2b TT |
7281 | case DW_ATE_UTF: |
7282 | /* We just treat this as an integer and then recognize the | |
7283 | type by name elsewhere. */ | |
7284 | break; | |
7285 | ||
6ccb9162 UW |
7286 | default: |
7287 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
7288 | dwarf_type_encoding_name (encoding)); | |
7289 | break; | |
c906108c | 7290 | } |
6ccb9162 | 7291 | |
0114d602 DJ |
7292 | type = init_type (code, size, type_flags, NULL, objfile); |
7293 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
7294 | TYPE_TARGET_TYPE (type) = target_type; |
7295 | ||
0114d602 | 7296 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 7297 | TYPE_NOSIGN (type) = 1; |
0114d602 | 7298 | |
f792889a | 7299 | return set_die_type (die, type, cu); |
c906108c SS |
7300 | } |
7301 | ||
a02abb62 JB |
7302 | /* Read the given DW_AT_subrange DIE. */ |
7303 | ||
f792889a | 7304 | static struct type * |
a02abb62 JB |
7305 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
7306 | { | |
5e2b427d | 7307 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
a02abb62 JB |
7308 | struct type *base_type; |
7309 | struct type *range_type; | |
7310 | struct attribute *attr; | |
43bbcdc2 PH |
7311 | LONGEST low = 0; |
7312 | LONGEST high = -1; | |
39cbfefa | 7313 | char *name; |
43bbcdc2 | 7314 | LONGEST negative_mask; |
e77813c8 | 7315 | |
a02abb62 | 7316 | base_type = die_type (die, cu); |
953ac07e JK |
7317 | /* Preserve BASE_TYPE's original type, just set its LENGTH. */ |
7318 | check_typedef (base_type); | |
a02abb62 | 7319 | |
7e314c57 JK |
7320 | /* The die_type call above may have already set the type for this DIE. */ |
7321 | range_type = get_die_type (die, cu); | |
7322 | if (range_type) | |
7323 | return range_type; | |
7324 | ||
e142c38c | 7325 | if (cu->language == language_fortran) |
6e70227d | 7326 | { |
a02abb62 JB |
7327 | /* FORTRAN implies a lower bound of 1, if not given. */ |
7328 | low = 1; | |
7329 | } | |
7330 | ||
dd5e6932 DJ |
7331 | /* FIXME: For variable sized arrays either of these could be |
7332 | a variable rather than a constant value. We'll allow it, | |
7333 | but we don't know how to handle it. */ | |
e142c38c | 7334 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
7335 | if (attr) |
7336 | low = dwarf2_get_attr_constant_value (attr, 0); | |
7337 | ||
e142c38c | 7338 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 | 7339 | if (attr) |
6e70227d | 7340 | { |
e77813c8 | 7341 | if (attr->form == DW_FORM_block1 || is_ref_attr (attr)) |
a02abb62 JB |
7342 | { |
7343 | /* GCC encodes arrays with unspecified or dynamic length | |
e77813c8 | 7344 | with a DW_FORM_block1 attribute or a reference attribute. |
a02abb62 JB |
7345 | FIXME: GDB does not yet know how to handle dynamic |
7346 | arrays properly, treat them as arrays with unspecified | |
7347 | length for now. | |
7348 | ||
7349 | FIXME: jimb/2003-09-22: GDB does not really know | |
7350 | how to handle arrays of unspecified length | |
7351 | either; we just represent them as zero-length | |
7352 | arrays. Choose an appropriate upper bound given | |
7353 | the lower bound we've computed above. */ | |
7354 | high = low - 1; | |
7355 | } | |
7356 | else | |
7357 | high = dwarf2_get_attr_constant_value (attr, 1); | |
7358 | } | |
e77813c8 PM |
7359 | else |
7360 | { | |
7361 | attr = dwarf2_attr (die, DW_AT_count, cu); | |
7362 | if (attr) | |
7363 | { | |
7364 | int count = dwarf2_get_attr_constant_value (attr, 1); | |
7365 | high = low + count - 1; | |
7366 | } | |
7367 | } | |
7368 | ||
7369 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
7370 | without specifying a base type. | |
7371 | In that case, the base type must be set to the type of | |
7372 | the lower bound, upper bound or count, in that order, if any of these | |
7373 | three attributes references an object that has a type. | |
7374 | If no base type is found, the Dwarf-2 specifications say that | |
7375 | a signed integer type of size equal to the size of an address should | |
7376 | be used. | |
7377 | For the following C code: `extern char gdb_int [];' | |
7378 | GCC produces an empty range DIE. | |
7379 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
7380 | high bound or count are not yet handled by this code. | |
7381 | */ | |
7382 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
7383 | { | |
7384 | struct objfile *objfile = cu->objfile; | |
7385 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
7386 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
7387 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
7388 | ||
7389 | /* Test "int", "long int", and "long long int" objfile types, | |
7390 | and select the first one having a size above or equal to the | |
7391 | architecture address size. */ | |
7392 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
7393 | base_type = int_type; | |
7394 | else | |
7395 | { | |
7396 | int_type = objfile_type (objfile)->builtin_long; | |
7397 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
7398 | base_type = int_type; | |
7399 | else | |
7400 | { | |
7401 | int_type = objfile_type (objfile)->builtin_long_long; | |
7402 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
7403 | base_type = int_type; | |
7404 | } | |
7405 | } | |
7406 | } | |
a02abb62 | 7407 | |
6e70227d | 7408 | negative_mask = |
43bbcdc2 PH |
7409 | (LONGEST) -1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1); |
7410 | if (!TYPE_UNSIGNED (base_type) && (low & negative_mask)) | |
7411 | low |= negative_mask; | |
7412 | if (!TYPE_UNSIGNED (base_type) && (high & negative_mask)) | |
7413 | high |= negative_mask; | |
7414 | ||
a02abb62 JB |
7415 | range_type = create_range_type (NULL, base_type, low, high); |
7416 | ||
bbb0eef6 JK |
7417 | /* Mark arrays with dynamic length at least as an array of unspecified |
7418 | length. GDB could check the boundary but before it gets implemented at | |
7419 | least allow accessing the array elements. */ | |
7420 | if (attr && attr->form == DW_FORM_block1) | |
7421 | TYPE_HIGH_BOUND_UNDEFINED (range_type) = 1; | |
7422 | ||
39cbfefa DJ |
7423 | name = dwarf2_name (die, cu); |
7424 | if (name) | |
7425 | TYPE_NAME (range_type) = name; | |
6e70227d | 7426 | |
e142c38c | 7427 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
7428 | if (attr) |
7429 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
7430 | ||
7e314c57 JK |
7431 | set_die_type (die, range_type, cu); |
7432 | ||
7433 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
7434 | set_descriptive_type (range_type, die, cu); |
7435 | ||
7e314c57 | 7436 | return range_type; |
a02abb62 | 7437 | } |
6e70227d | 7438 | |
f792889a | 7439 | static struct type * |
81a17f79 JB |
7440 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
7441 | { | |
7442 | struct type *type; | |
81a17f79 | 7443 | |
81a17f79 JB |
7444 | /* For now, we only support the C meaning of an unspecified type: void. */ |
7445 | ||
0114d602 DJ |
7446 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
7447 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 7448 | |
f792889a | 7449 | return set_die_type (die, type, cu); |
81a17f79 | 7450 | } |
a02abb62 | 7451 | |
51545339 DJ |
7452 | /* Trivial hash function for die_info: the hash value of a DIE |
7453 | is its offset in .debug_info for this objfile. */ | |
7454 | ||
7455 | static hashval_t | |
7456 | die_hash (const void *item) | |
7457 | { | |
7458 | const struct die_info *die = item; | |
9a619af0 | 7459 | |
51545339 DJ |
7460 | return die->offset; |
7461 | } | |
7462 | ||
7463 | /* Trivial comparison function for die_info structures: two DIEs | |
7464 | are equal if they have the same offset. */ | |
7465 | ||
7466 | static int | |
7467 | die_eq (const void *item_lhs, const void *item_rhs) | |
7468 | { | |
7469 | const struct die_info *die_lhs = item_lhs; | |
7470 | const struct die_info *die_rhs = item_rhs; | |
9a619af0 | 7471 | |
51545339 DJ |
7472 | return die_lhs->offset == die_rhs->offset; |
7473 | } | |
7474 | ||
c906108c SS |
7475 | /* Read a whole compilation unit into a linked list of dies. */ |
7476 | ||
f9aca02d | 7477 | static struct die_info * |
93311388 | 7478 | read_comp_unit (gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 7479 | { |
93311388 DE |
7480 | struct die_reader_specs reader_specs; |
7481 | ||
348e048f | 7482 | gdb_assert (cu->die_hash == NULL); |
51545339 DJ |
7483 | cu->die_hash |
7484 | = htab_create_alloc_ex (cu->header.length / 12, | |
7485 | die_hash, | |
7486 | die_eq, | |
7487 | NULL, | |
7488 | &cu->comp_unit_obstack, | |
7489 | hashtab_obstack_allocate, | |
7490 | dummy_obstack_deallocate); | |
7491 | ||
93311388 DE |
7492 | init_cu_die_reader (&reader_specs, cu); |
7493 | ||
7494 | return read_die_and_children (&reader_specs, info_ptr, &info_ptr, NULL); | |
639d11d3 DC |
7495 | } |
7496 | ||
d97bc12b DE |
7497 | /* Main entry point for reading a DIE and all children. |
7498 | Read the DIE and dump it if requested. */ | |
7499 | ||
7500 | static struct die_info * | |
93311388 DE |
7501 | read_die_and_children (const struct die_reader_specs *reader, |
7502 | gdb_byte *info_ptr, | |
d97bc12b DE |
7503 | gdb_byte **new_info_ptr, |
7504 | struct die_info *parent) | |
7505 | { | |
93311388 | 7506 | struct die_info *result = read_die_and_children_1 (reader, info_ptr, |
d97bc12b DE |
7507 | new_info_ptr, parent); |
7508 | ||
7509 | if (dwarf2_die_debug) | |
7510 | { | |
348e048f DE |
7511 | fprintf_unfiltered (gdb_stdlog, |
7512 | "\nRead die from %s of %s:\n", | |
7513 | reader->buffer == dwarf2_per_objfile->info.buffer | |
7514 | ? ".debug_info" | |
7515 | : reader->buffer == dwarf2_per_objfile->types.buffer | |
7516 | ? ".debug_types" | |
7517 | : "unknown section", | |
7518 | reader->abfd->filename); | |
d97bc12b DE |
7519 | dump_die (result, dwarf2_die_debug); |
7520 | } | |
7521 | ||
7522 | return result; | |
7523 | } | |
7524 | ||
639d11d3 DC |
7525 | /* Read a single die and all its descendents. Set the die's sibling |
7526 | field to NULL; set other fields in the die correctly, and set all | |
7527 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
7528 | location of the info_ptr after reading all of those dies. PARENT | |
7529 | is the parent of the die in question. */ | |
7530 | ||
7531 | static struct die_info * | |
93311388 DE |
7532 | read_die_and_children_1 (const struct die_reader_specs *reader, |
7533 | gdb_byte *info_ptr, | |
d97bc12b DE |
7534 | gdb_byte **new_info_ptr, |
7535 | struct die_info *parent) | |
639d11d3 DC |
7536 | { |
7537 | struct die_info *die; | |
fe1b8b76 | 7538 | gdb_byte *cur_ptr; |
639d11d3 DC |
7539 | int has_children; |
7540 | ||
93311388 | 7541 | cur_ptr = read_full_die (reader, &die, info_ptr, &has_children); |
1d325ec1 DJ |
7542 | if (die == NULL) |
7543 | { | |
7544 | *new_info_ptr = cur_ptr; | |
7545 | return NULL; | |
7546 | } | |
93311388 | 7547 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
7548 | |
7549 | if (has_children) | |
348e048f | 7550 | die->child = read_die_and_siblings (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
7551 | else |
7552 | { | |
7553 | die->child = NULL; | |
7554 | *new_info_ptr = cur_ptr; | |
7555 | } | |
7556 | ||
7557 | die->sibling = NULL; | |
7558 | die->parent = parent; | |
7559 | return die; | |
7560 | } | |
7561 | ||
7562 | /* Read a die, all of its descendents, and all of its siblings; set | |
7563 | all of the fields of all of the dies correctly. Arguments are as | |
7564 | in read_die_and_children. */ | |
7565 | ||
7566 | static struct die_info * | |
93311388 DE |
7567 | read_die_and_siblings (const struct die_reader_specs *reader, |
7568 | gdb_byte *info_ptr, | |
fe1b8b76 | 7569 | gdb_byte **new_info_ptr, |
639d11d3 DC |
7570 | struct die_info *parent) |
7571 | { | |
7572 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 7573 | gdb_byte *cur_ptr; |
639d11d3 | 7574 | |
c906108c | 7575 | cur_ptr = info_ptr; |
639d11d3 DC |
7576 | first_die = last_sibling = NULL; |
7577 | ||
7578 | while (1) | |
c906108c | 7579 | { |
639d11d3 | 7580 | struct die_info *die |
93311388 | 7581 | = read_die_and_children_1 (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 7582 | |
1d325ec1 | 7583 | if (die == NULL) |
c906108c | 7584 | { |
639d11d3 DC |
7585 | *new_info_ptr = cur_ptr; |
7586 | return first_die; | |
c906108c | 7587 | } |
1d325ec1 DJ |
7588 | |
7589 | if (!first_die) | |
7590 | first_die = die; | |
c906108c | 7591 | else |
1d325ec1 DJ |
7592 | last_sibling->sibling = die; |
7593 | ||
7594 | last_sibling = die; | |
c906108c | 7595 | } |
c906108c SS |
7596 | } |
7597 | ||
93311388 DE |
7598 | /* Read the die from the .debug_info section buffer. Set DIEP to |
7599 | point to a newly allocated die with its information, except for its | |
7600 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
7601 | whether the die has children or not. */ | |
7602 | ||
7603 | static gdb_byte * | |
7604 | read_full_die (const struct die_reader_specs *reader, | |
7605 | struct die_info **diep, gdb_byte *info_ptr, | |
7606 | int *has_children) | |
7607 | { | |
7608 | unsigned int abbrev_number, bytes_read, i, offset; | |
7609 | struct abbrev_info *abbrev; | |
7610 | struct die_info *die; | |
7611 | struct dwarf2_cu *cu = reader->cu; | |
7612 | bfd *abfd = reader->abfd; | |
7613 | ||
7614 | offset = info_ptr - reader->buffer; | |
7615 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
7616 | info_ptr += bytes_read; | |
7617 | if (!abbrev_number) | |
7618 | { | |
7619 | *diep = NULL; | |
7620 | *has_children = 0; | |
7621 | return info_ptr; | |
7622 | } | |
7623 | ||
7624 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
7625 | if (!abbrev) | |
348e048f DE |
7626 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
7627 | abbrev_number, | |
7628 | bfd_get_filename (abfd)); | |
7629 | ||
93311388 DE |
7630 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
7631 | die->offset = offset; | |
7632 | die->tag = abbrev->tag; | |
7633 | die->abbrev = abbrev_number; | |
7634 | ||
7635 | die->num_attrs = abbrev->num_attrs; | |
7636 | ||
7637 | for (i = 0; i < abbrev->num_attrs; ++i) | |
7638 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
7639 | abfd, info_ptr, cu); | |
7640 | ||
7641 | *diep = die; | |
7642 | *has_children = abbrev->has_children; | |
7643 | return info_ptr; | |
7644 | } | |
7645 | ||
c906108c SS |
7646 | /* In DWARF version 2, the description of the debugging information is |
7647 | stored in a separate .debug_abbrev section. Before we read any | |
7648 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
7649 | in a hash table. This function also sets flags in CU describing |
7650 | the data found in the abbrev table. */ | |
c906108c SS |
7651 | |
7652 | static void | |
e7c27a73 | 7653 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 7654 | { |
e7c27a73 | 7655 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 7656 | gdb_byte *abbrev_ptr; |
c906108c SS |
7657 | struct abbrev_info *cur_abbrev; |
7658 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
7659 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
7660 | struct attr_abbrev *cur_attrs; |
7661 | unsigned int allocated_attrs; | |
c906108c | 7662 | |
57349743 | 7663 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
7664 | obstack_init (&cu->abbrev_obstack); |
7665 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
7666 | (ABBREV_HASH_SIZE | |
7667 | * sizeof (struct abbrev_info *))); | |
7668 | memset (cu->dwarf2_abbrevs, 0, | |
7669 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 7670 | |
be391dca TT |
7671 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
7672 | &dwarf2_per_objfile->abbrev); | |
dce234bc | 7673 | abbrev_ptr = dwarf2_per_objfile->abbrev.buffer + cu_header->abbrev_offset; |
c906108c SS |
7674 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
7675 | abbrev_ptr += bytes_read; | |
7676 | ||
f3dd6933 DJ |
7677 | allocated_attrs = ATTR_ALLOC_CHUNK; |
7678 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
6e70227d | 7679 | |
c906108c SS |
7680 | /* loop until we reach an abbrev number of 0 */ |
7681 | while (abbrev_number) | |
7682 | { | |
f3dd6933 | 7683 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
7684 | |
7685 | /* read in abbrev header */ | |
7686 | cur_abbrev->number = abbrev_number; | |
7687 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
7688 | abbrev_ptr += bytes_read; | |
7689 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
7690 | abbrev_ptr += 1; | |
7691 | ||
72bf9492 DJ |
7692 | if (cur_abbrev->tag == DW_TAG_namespace) |
7693 | cu->has_namespace_info = 1; | |
7694 | ||
c906108c SS |
7695 | /* now read in declarations */ |
7696 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
7697 | abbrev_ptr += bytes_read; | |
7698 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
7699 | abbrev_ptr += bytes_read; | |
7700 | while (abbrev_name) | |
7701 | { | |
f3dd6933 | 7702 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 7703 | { |
f3dd6933 DJ |
7704 | allocated_attrs += ATTR_ALLOC_CHUNK; |
7705 | cur_attrs | |
7706 | = xrealloc (cur_attrs, (allocated_attrs | |
7707 | * sizeof (struct attr_abbrev))); | |
c906108c | 7708 | } |
ae038cb0 DJ |
7709 | |
7710 | /* Record whether this compilation unit might have | |
7711 | inter-compilation-unit references. If we don't know what form | |
7712 | this attribute will have, then it might potentially be a | |
7713 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
7714 | references. */ | |
7715 | ||
7716 | if (abbrev_form == DW_FORM_ref_addr | |
7717 | || abbrev_form == DW_FORM_indirect) | |
7718 | cu->has_form_ref_addr = 1; | |
7719 | ||
f3dd6933 DJ |
7720 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
7721 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
7722 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
7723 | abbrev_ptr += bytes_read; | |
7724 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
7725 | abbrev_ptr += bytes_read; | |
7726 | } | |
7727 | ||
f3dd6933 DJ |
7728 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
7729 | (cur_abbrev->num_attrs | |
7730 | * sizeof (struct attr_abbrev))); | |
7731 | memcpy (cur_abbrev->attrs, cur_attrs, | |
7732 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
7733 | ||
c906108c | 7734 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
7735 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
7736 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
7737 | |
7738 | /* Get next abbreviation. | |
7739 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
7740 | always properly terminated with an abbrev number of 0. |
7741 | Exit loop if we encounter an abbreviation which we have | |
7742 | already read (which means we are about to read the abbreviations | |
7743 | for the next compile unit) or if the end of the abbreviation | |
7744 | table is reached. */ | |
dce234bc PP |
7745 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev.buffer) |
7746 | >= dwarf2_per_objfile->abbrev.size) | |
c906108c SS |
7747 | break; |
7748 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
7749 | abbrev_ptr += bytes_read; | |
e7c27a73 | 7750 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
7751 | break; |
7752 | } | |
f3dd6933 DJ |
7753 | |
7754 | xfree (cur_attrs); | |
c906108c SS |
7755 | } |
7756 | ||
f3dd6933 | 7757 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 7758 | |
c906108c | 7759 | static void |
f3dd6933 | 7760 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 7761 | { |
f3dd6933 | 7762 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 7763 | |
f3dd6933 DJ |
7764 | obstack_free (&cu->abbrev_obstack, NULL); |
7765 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
7766 | } |
7767 | ||
7768 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
7769 | ||
7770 | static struct abbrev_info * | |
e7c27a73 | 7771 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
7772 | { |
7773 | unsigned int hash_number; | |
7774 | struct abbrev_info *abbrev; | |
7775 | ||
7776 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 7777 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
7778 | |
7779 | while (abbrev) | |
7780 | { | |
7781 | if (abbrev->number == number) | |
7782 | return abbrev; | |
7783 | else | |
7784 | abbrev = abbrev->next; | |
7785 | } | |
7786 | return NULL; | |
7787 | } | |
7788 | ||
72bf9492 DJ |
7789 | /* Returns nonzero if TAG represents a type that we might generate a partial |
7790 | symbol for. */ | |
7791 | ||
7792 | static int | |
7793 | is_type_tag_for_partial (int tag) | |
7794 | { | |
7795 | switch (tag) | |
7796 | { | |
7797 | #if 0 | |
7798 | /* Some types that would be reasonable to generate partial symbols for, | |
7799 | that we don't at present. */ | |
7800 | case DW_TAG_array_type: | |
7801 | case DW_TAG_file_type: | |
7802 | case DW_TAG_ptr_to_member_type: | |
7803 | case DW_TAG_set_type: | |
7804 | case DW_TAG_string_type: | |
7805 | case DW_TAG_subroutine_type: | |
7806 | #endif | |
7807 | case DW_TAG_base_type: | |
7808 | case DW_TAG_class_type: | |
680b30c7 | 7809 | case DW_TAG_interface_type: |
72bf9492 DJ |
7810 | case DW_TAG_enumeration_type: |
7811 | case DW_TAG_structure_type: | |
7812 | case DW_TAG_subrange_type: | |
7813 | case DW_TAG_typedef: | |
7814 | case DW_TAG_union_type: | |
7815 | return 1; | |
7816 | default: | |
7817 | return 0; | |
7818 | } | |
7819 | } | |
7820 | ||
7821 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
7822 | ||
7823 | static struct partial_die_info * | |
93311388 DE |
7824 | load_partial_dies (bfd *abfd, gdb_byte *buffer, gdb_byte *info_ptr, |
7825 | int building_psymtab, struct dwarf2_cu *cu) | |
72bf9492 DJ |
7826 | { |
7827 | struct partial_die_info *part_die; | |
7828 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
7829 | struct abbrev_info *abbrev; | |
7830 | unsigned int bytes_read; | |
5afb4e99 | 7831 | unsigned int load_all = 0; |
72bf9492 DJ |
7832 | |
7833 | int nesting_level = 1; | |
7834 | ||
7835 | parent_die = NULL; | |
7836 | last_die = NULL; | |
7837 | ||
5afb4e99 DJ |
7838 | if (cu->per_cu && cu->per_cu->load_all_dies) |
7839 | load_all = 1; | |
7840 | ||
72bf9492 DJ |
7841 | cu->partial_dies |
7842 | = htab_create_alloc_ex (cu->header.length / 12, | |
7843 | partial_die_hash, | |
7844 | partial_die_eq, | |
7845 | NULL, | |
7846 | &cu->comp_unit_obstack, | |
7847 | hashtab_obstack_allocate, | |
7848 | dummy_obstack_deallocate); | |
7849 | ||
7850 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
7851 | sizeof (struct partial_die_info)); | |
7852 | ||
7853 | while (1) | |
7854 | { | |
7855 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
7856 | ||
7857 | /* A NULL abbrev means the end of a series of children. */ | |
7858 | if (abbrev == NULL) | |
7859 | { | |
7860 | if (--nesting_level == 0) | |
7861 | { | |
7862 | /* PART_DIE was probably the last thing allocated on the | |
7863 | comp_unit_obstack, so we could call obstack_free | |
7864 | here. We don't do that because the waste is small, | |
7865 | and will be cleaned up when we're done with this | |
7866 | compilation unit. This way, we're also more robust | |
7867 | against other users of the comp_unit_obstack. */ | |
7868 | return first_die; | |
7869 | } | |
7870 | info_ptr += bytes_read; | |
7871 | last_die = parent_die; | |
7872 | parent_die = parent_die->die_parent; | |
7873 | continue; | |
7874 | } | |
7875 | ||
5afb4e99 DJ |
7876 | /* Check whether this DIE is interesting enough to save. Normally |
7877 | we would not be interested in members here, but there may be | |
7878 | later variables referencing them via DW_AT_specification (for | |
7879 | static members). */ | |
7880 | if (!load_all | |
7881 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
7882 | && abbrev->tag != DW_TAG_enumerator |
7883 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 7884 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 7885 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 7886 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 7887 | && abbrev->tag != DW_TAG_module |
5afb4e99 | 7888 | && abbrev->tag != DW_TAG_member) |
72bf9492 DJ |
7889 | { |
7890 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 7891 | info_ptr = skip_one_die (buffer, info_ptr + bytes_read, abbrev, cu); |
72bf9492 DJ |
7892 | continue; |
7893 | } | |
7894 | ||
93311388 DE |
7895 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, abfd, |
7896 | buffer, info_ptr, cu); | |
72bf9492 DJ |
7897 | |
7898 | /* This two-pass algorithm for processing partial symbols has a | |
7899 | high cost in cache pressure. Thus, handle some simple cases | |
7900 | here which cover the majority of C partial symbols. DIEs | |
7901 | which neither have specification tags in them, nor could have | |
7902 | specification tags elsewhere pointing at them, can simply be | |
7903 | processed and discarded. | |
7904 | ||
7905 | This segment is also optional; scan_partial_symbols and | |
7906 | add_partial_symbol will handle these DIEs if we chain | |
7907 | them in normally. When compilers which do not emit large | |
7908 | quantities of duplicate debug information are more common, | |
7909 | this code can probably be removed. */ | |
7910 | ||
7911 | /* Any complete simple types at the top level (pretty much all | |
7912 | of them, for a language without namespaces), can be processed | |
7913 | directly. */ | |
7914 | if (parent_die == NULL | |
7915 | && part_die->has_specification == 0 | |
7916 | && part_die->is_declaration == 0 | |
7917 | && (part_die->tag == DW_TAG_typedef | |
7918 | || part_die->tag == DW_TAG_base_type | |
7919 | || part_die->tag == DW_TAG_subrange_type)) | |
7920 | { | |
7921 | if (building_psymtab && part_die->name != NULL) | |
04a679b8 | 7922 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 DJ |
7923 | VAR_DOMAIN, LOC_TYPEDEF, |
7924 | &cu->objfile->static_psymbols, | |
7925 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
93311388 | 7926 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
7927 | continue; |
7928 | } | |
7929 | ||
7930 | /* If we're at the second level, and we're an enumerator, and | |
7931 | our parent has no specification (meaning possibly lives in a | |
7932 | namespace elsewhere), then we can add the partial symbol now | |
7933 | instead of queueing it. */ | |
7934 | if (part_die->tag == DW_TAG_enumerator | |
7935 | && parent_die != NULL | |
7936 | && parent_die->die_parent == NULL | |
7937 | && parent_die->tag == DW_TAG_enumeration_type | |
7938 | && parent_die->has_specification == 0) | |
7939 | { | |
7940 | if (part_die->name == NULL) | |
e2e0b3e5 | 7941 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 | 7942 | else if (building_psymtab) |
04a679b8 | 7943 | add_psymbol_to_list (part_die->name, strlen (part_die->name), 0, |
72bf9492 | 7944 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
7945 | (cu->language == language_cplus |
7946 | || cu->language == language_java) | |
72bf9492 DJ |
7947 | ? &cu->objfile->global_psymbols |
7948 | : &cu->objfile->static_psymbols, | |
7949 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
7950 | ||
93311388 | 7951 | info_ptr = locate_pdi_sibling (part_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
7952 | continue; |
7953 | } | |
7954 | ||
7955 | /* We'll save this DIE so link it in. */ | |
7956 | part_die->die_parent = parent_die; | |
7957 | part_die->die_sibling = NULL; | |
7958 | part_die->die_child = NULL; | |
7959 | ||
7960 | if (last_die && last_die == parent_die) | |
7961 | last_die->die_child = part_die; | |
7962 | else if (last_die) | |
7963 | last_die->die_sibling = part_die; | |
7964 | ||
7965 | last_die = part_die; | |
7966 | ||
7967 | if (first_die == NULL) | |
7968 | first_die = part_die; | |
7969 | ||
7970 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
7971 | find interesting need to be in the hash table, because we | |
7972 | also have the parent/sibling/child chains; only those that we | |
7973 | might refer to by offset later during partial symbol reading. | |
7974 | ||
7975 | For now this means things that might have be the target of a | |
7976 | DW_AT_specification, DW_AT_abstract_origin, or | |
7977 | DW_AT_extension. DW_AT_extension will refer only to | |
7978 | namespaces; DW_AT_abstract_origin refers to functions (and | |
7979 | many things under the function DIE, but we do not recurse | |
7980 | into function DIEs during partial symbol reading) and | |
7981 | possibly variables as well; DW_AT_specification refers to | |
7982 | declarations. Declarations ought to have the DW_AT_declaration | |
7983 | flag. It happens that GCC forgets to put it in sometimes, but | |
7984 | only for functions, not for types. | |
7985 | ||
7986 | Adding more things than necessary to the hash table is harmless | |
7987 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
7988 | wasted time in find_partial_die, when we reread the compilation |
7989 | unit with load_all_dies set. */ | |
72bf9492 | 7990 | |
5afb4e99 DJ |
7991 | if (load_all |
7992 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
7993 | || abbrev->tag == DW_TAG_variable |
7994 | || abbrev->tag == DW_TAG_namespace | |
7995 | || part_die->is_declaration) | |
7996 | { | |
7997 | void **slot; | |
7998 | ||
7999 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
8000 | part_die->offset, INSERT); | |
8001 | *slot = part_die; | |
8002 | } | |
8003 | ||
8004 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
8005 | sizeof (struct partial_die_info)); | |
8006 | ||
8007 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 8008 | we have no reason to follow the children of structures; for other |
72bf9492 | 8009 | languages we have to, both so that we can get at method physnames |
bc30ff58 JB |
8010 | to infer fully qualified class names, and for DW_AT_specification. |
8011 | ||
8012 | For Ada, we need to scan the children of subprograms and lexical | |
8013 | blocks as well because Ada allows the definition of nested | |
8014 | entities that could be interesting for the debugger, such as | |
8015 | nested subprograms for instance. */ | |
72bf9492 | 8016 | if (last_die->has_children |
5afb4e99 DJ |
8017 | && (load_all |
8018 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 8019 | || last_die->tag == DW_TAG_module |
72bf9492 DJ |
8020 | || last_die->tag == DW_TAG_enumeration_type |
8021 | || (cu->language != language_c | |
8022 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 8023 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 8024 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
8025 | || last_die->tag == DW_TAG_union_type)) |
8026 | || (cu->language == language_ada | |
8027 | && (last_die->tag == DW_TAG_subprogram | |
8028 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
8029 | { |
8030 | nesting_level++; | |
8031 | parent_die = last_die; | |
8032 | continue; | |
8033 | } | |
8034 | ||
8035 | /* Otherwise we skip to the next sibling, if any. */ | |
93311388 | 8036 | info_ptr = locate_pdi_sibling (last_die, buffer, info_ptr, abfd, cu); |
72bf9492 DJ |
8037 | |
8038 | /* Back to the top, do it again. */ | |
8039 | } | |
8040 | } | |
8041 | ||
c906108c SS |
8042 | /* Read a minimal amount of information into the minimal die structure. */ |
8043 | ||
fe1b8b76 | 8044 | static gdb_byte * |
72bf9492 DJ |
8045 | read_partial_die (struct partial_die_info *part_die, |
8046 | struct abbrev_info *abbrev, | |
8047 | unsigned int abbrev_len, bfd *abfd, | |
93311388 DE |
8048 | gdb_byte *buffer, gdb_byte *info_ptr, |
8049 | struct dwarf2_cu *cu) | |
c906108c | 8050 | { |
fa238c03 | 8051 | unsigned int i; |
c906108c | 8052 | struct attribute attr; |
c5aa993b | 8053 | int has_low_pc_attr = 0; |
c906108c SS |
8054 | int has_high_pc_attr = 0; |
8055 | ||
72bf9492 | 8056 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 8057 | |
93311388 | 8058 | part_die->offset = info_ptr - buffer; |
72bf9492 DJ |
8059 | |
8060 | info_ptr += abbrev_len; | |
8061 | ||
8062 | if (abbrev == NULL) | |
8063 | return info_ptr; | |
8064 | ||
c906108c SS |
8065 | part_die->tag = abbrev->tag; |
8066 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
8067 | |
8068 | for (i = 0; i < abbrev->num_attrs; ++i) | |
8069 | { | |
e7c27a73 | 8070 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
8071 | |
8072 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 8073 | partial symbol table. */ |
c906108c SS |
8074 | switch (attr.name) |
8075 | { | |
8076 | case DW_AT_name: | |
71c25dea TT |
8077 | switch (part_die->tag) |
8078 | { | |
8079 | case DW_TAG_compile_unit: | |
348e048f | 8080 | case DW_TAG_type_unit: |
71c25dea TT |
8081 | /* Compilation units have a DW_AT_name that is a filename, not |
8082 | a source language identifier. */ | |
8083 | case DW_TAG_enumeration_type: | |
8084 | case DW_TAG_enumerator: | |
8085 | /* These tags always have simple identifiers already; no need | |
8086 | to canonicalize them. */ | |
8087 | part_die->name = DW_STRING (&attr); | |
8088 | break; | |
8089 | default: | |
8090 | part_die->name | |
8091 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
95519e0e | 8092 | &cu->objfile->objfile_obstack); |
71c25dea TT |
8093 | break; |
8094 | } | |
c906108c | 8095 | break; |
31ef98ae | 8096 | case DW_AT_linkage_name: |
c906108c | 8097 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
8098 | /* Note that both forms of linkage name might appear. We |
8099 | assume they will be the same, and we only store the last | |
8100 | one we see. */ | |
94af9270 KS |
8101 | if (cu->language == language_ada) |
8102 | part_die->name = DW_STRING (&attr); | |
c906108c SS |
8103 | break; |
8104 | case DW_AT_low_pc: | |
8105 | has_low_pc_attr = 1; | |
8106 | part_die->lowpc = DW_ADDR (&attr); | |
8107 | break; | |
8108 | case DW_AT_high_pc: | |
8109 | has_high_pc_attr = 1; | |
8110 | part_die->highpc = DW_ADDR (&attr); | |
8111 | break; | |
8112 | case DW_AT_location: | |
8e19ed76 PS |
8113 | /* Support the .debug_loc offsets */ |
8114 | if (attr_form_is_block (&attr)) | |
8115 | { | |
8116 | part_die->locdesc = DW_BLOCK (&attr); | |
8117 | } | |
3690dd37 | 8118 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 8119 | { |
4d3c2250 | 8120 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
8121 | } |
8122 | else | |
8123 | { | |
4d3c2250 KB |
8124 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
8125 | "partial symbol information"); | |
8e19ed76 | 8126 | } |
c906108c | 8127 | break; |
c906108c SS |
8128 | case DW_AT_external: |
8129 | part_die->is_external = DW_UNSND (&attr); | |
8130 | break; | |
8131 | case DW_AT_declaration: | |
8132 | part_die->is_declaration = DW_UNSND (&attr); | |
8133 | break; | |
8134 | case DW_AT_type: | |
8135 | part_die->has_type = 1; | |
8136 | break; | |
8137 | case DW_AT_abstract_origin: | |
8138 | case DW_AT_specification: | |
72bf9492 DJ |
8139 | case DW_AT_extension: |
8140 | part_die->has_specification = 1; | |
c764a876 | 8141 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
8142 | break; |
8143 | case DW_AT_sibling: | |
8144 | /* Ignore absolute siblings, they might point outside of | |
8145 | the current compile unit. */ | |
8146 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 8147 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 8148 | else |
93311388 | 8149 | part_die->sibling = buffer + dwarf2_get_ref_die_offset (&attr); |
c906108c | 8150 | break; |
fa4028e9 JB |
8151 | case DW_AT_byte_size: |
8152 | part_die->has_byte_size = 1; | |
8153 | break; | |
68511cec CES |
8154 | case DW_AT_calling_convention: |
8155 | /* DWARF doesn't provide a way to identify a program's source-level | |
8156 | entry point. DW_AT_calling_convention attributes are only meant | |
8157 | to describe functions' calling conventions. | |
8158 | ||
8159 | However, because it's a necessary piece of information in | |
8160 | Fortran, and because DW_CC_program is the only piece of debugging | |
8161 | information whose definition refers to a 'main program' at all, | |
8162 | several compilers have begun marking Fortran main programs with | |
8163 | DW_CC_program --- even when those functions use the standard | |
8164 | calling conventions. | |
8165 | ||
8166 | So until DWARF specifies a way to provide this information and | |
8167 | compilers pick up the new representation, we'll support this | |
8168 | practice. */ | |
8169 | if (DW_UNSND (&attr) == DW_CC_program | |
8170 | && cu->language == language_fortran) | |
8171 | set_main_name (part_die->name); | |
8172 | break; | |
c906108c SS |
8173 | default: |
8174 | break; | |
8175 | } | |
8176 | } | |
8177 | ||
c906108c SS |
8178 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
8179 | eliminate duplicate copies of functions and vtables and such. | |
8180 | The linker will arbitrarily choose one and discard the others. | |
8181 | The AT_*_pc values for such functions refer to local labels in | |
8182 | these sections. If the section from that file was discarded, the | |
8183 | labels are not in the output, so the relocs get a value of 0. | |
8184 | If this is a discarded function, mark the pc bounds as invalid, | |
8185 | so that GDB will ignore it. */ | |
8186 | if (has_low_pc_attr && has_high_pc_attr | |
8187 | && part_die->lowpc < part_die->highpc | |
8188 | && (part_die->lowpc != 0 | |
72dca2f5 | 8189 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 8190 | part_die->has_pc_info = 1; |
85cbf3d3 | 8191 | |
c906108c SS |
8192 | return info_ptr; |
8193 | } | |
8194 | ||
72bf9492 DJ |
8195 | /* Find a cached partial DIE at OFFSET in CU. */ |
8196 | ||
8197 | static struct partial_die_info * | |
c764a876 | 8198 | find_partial_die_in_comp_unit (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
8199 | { |
8200 | struct partial_die_info *lookup_die = NULL; | |
8201 | struct partial_die_info part_die; | |
8202 | ||
8203 | part_die.offset = offset; | |
8204 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
8205 | ||
72bf9492 DJ |
8206 | return lookup_die; |
8207 | } | |
8208 | ||
348e048f DE |
8209 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
8210 | except in the case of .debug_types DIEs which do not reference | |
8211 | outside their CU (they do however referencing other types via | |
8212 | DW_FORM_sig8). */ | |
72bf9492 DJ |
8213 | |
8214 | static struct partial_die_info * | |
c764a876 | 8215 | find_partial_die (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 | 8216 | { |
5afb4e99 DJ |
8217 | struct dwarf2_per_cu_data *per_cu = NULL; |
8218 | struct partial_die_info *pd = NULL; | |
72bf9492 | 8219 | |
348e048f DE |
8220 | if (cu->per_cu->from_debug_types) |
8221 | { | |
8222 | pd = find_partial_die_in_comp_unit (offset, cu); | |
8223 | if (pd != NULL) | |
8224 | return pd; | |
8225 | goto not_found; | |
8226 | } | |
8227 | ||
45452591 | 8228 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
8229 | { |
8230 | pd = find_partial_die_in_comp_unit (offset, cu); | |
8231 | if (pd != NULL) | |
8232 | return pd; | |
8233 | } | |
72bf9492 | 8234 | |
ae038cb0 DJ |
8235 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
8236 | ||
ae038cb0 DJ |
8237 | if (per_cu->cu == NULL) |
8238 | { | |
93311388 | 8239 | load_partial_comp_unit (per_cu, cu->objfile); |
ae038cb0 DJ |
8240 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; |
8241 | dwarf2_per_objfile->read_in_chain = per_cu; | |
8242 | } | |
8243 | ||
8244 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
8245 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
8246 | ||
8247 | if (pd == NULL && per_cu->load_all_dies == 0) | |
8248 | { | |
8249 | struct cleanup *back_to; | |
8250 | struct partial_die_info comp_unit_die; | |
8251 | struct abbrev_info *abbrev; | |
8252 | unsigned int bytes_read; | |
8253 | char *info_ptr; | |
8254 | ||
8255 | per_cu->load_all_dies = 1; | |
8256 | ||
8257 | /* Re-read the DIEs. */ | |
8258 | back_to = make_cleanup (null_cleanup, 0); | |
8259 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
8260 | { | |
8261 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
53d72f98 | 8262 | make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); |
5afb4e99 | 8263 | } |
dce234bc | 8264 | info_ptr = (dwarf2_per_objfile->info.buffer |
d00adf39 DE |
8265 | + per_cu->cu->header.offset |
8266 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
8267 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
8268 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
93311388 DE |
8269 | per_cu->cu->objfile->obfd, |
8270 | dwarf2_per_objfile->info.buffer, info_ptr, | |
5afb4e99 DJ |
8271 | per_cu->cu); |
8272 | if (comp_unit_die.has_children) | |
93311388 DE |
8273 | load_partial_dies (per_cu->cu->objfile->obfd, |
8274 | dwarf2_per_objfile->info.buffer, info_ptr, | |
8275 | 0, per_cu->cu); | |
5afb4e99 DJ |
8276 | do_cleanups (back_to); |
8277 | ||
8278 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
8279 | } | |
8280 | ||
348e048f DE |
8281 | not_found: |
8282 | ||
5afb4e99 DJ |
8283 | if (pd == NULL) |
8284 | internal_error (__FILE__, __LINE__, | |
c764a876 | 8285 | _("could not find partial DIE 0x%x in cache [from module %s]\n"), |
5afb4e99 DJ |
8286 | offset, bfd_get_filename (cu->objfile->obfd)); |
8287 | return pd; | |
72bf9492 DJ |
8288 | } |
8289 | ||
8290 | /* Adjust PART_DIE before generating a symbol for it. This function | |
8291 | may set the is_external flag or change the DIE's name. */ | |
8292 | ||
8293 | static void | |
8294 | fixup_partial_die (struct partial_die_info *part_die, | |
8295 | struct dwarf2_cu *cu) | |
8296 | { | |
8297 | /* If we found a reference attribute and the DIE has no name, try | |
8298 | to find a name in the referred to DIE. */ | |
8299 | ||
8300 | if (part_die->name == NULL && part_die->has_specification) | |
8301 | { | |
8302 | struct partial_die_info *spec_die; | |
72bf9492 | 8303 | |
10b3939b | 8304 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 8305 | |
10b3939b | 8306 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
8307 | |
8308 | if (spec_die->name) | |
8309 | { | |
8310 | part_die->name = spec_die->name; | |
8311 | ||
8312 | /* Copy DW_AT_external attribute if it is set. */ | |
8313 | if (spec_die->is_external) | |
8314 | part_die->is_external = spec_die->is_external; | |
8315 | } | |
8316 | } | |
8317 | ||
8318 | /* Set default names for some unnamed DIEs. */ | |
8319 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
8320 | || part_die->tag == DW_TAG_class_type)) | |
8321 | part_die->name = "(anonymous class)"; | |
8322 | ||
8323 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
8324 | part_die->name = "(anonymous namespace)"; | |
8325 | ||
8326 | if (part_die->tag == DW_TAG_structure_type | |
8327 | || part_die->tag == DW_TAG_class_type | |
8328 | || part_die->tag == DW_TAG_union_type) | |
8329 | guess_structure_name (part_die, cu); | |
8330 | } | |
8331 | ||
a8329558 | 8332 | /* Read an attribute value described by an attribute form. */ |
c906108c | 8333 | |
fe1b8b76 | 8334 | static gdb_byte * |
a8329558 | 8335 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 8336 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 8337 | struct dwarf2_cu *cu) |
c906108c | 8338 | { |
e7c27a73 | 8339 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
8340 | unsigned int bytes_read; |
8341 | struct dwarf_block *blk; | |
8342 | ||
a8329558 KW |
8343 | attr->form = form; |
8344 | switch (form) | |
c906108c | 8345 | { |
c906108c | 8346 | case DW_FORM_ref_addr: |
ae411497 TT |
8347 | if (cu->header.version == 2) |
8348 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); | |
8349 | else | |
8350 | DW_ADDR (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
8351 | info_ptr += bytes_read; | |
8352 | break; | |
8353 | case DW_FORM_addr: | |
e7c27a73 | 8354 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 8355 | info_ptr += bytes_read; |
c906108c SS |
8356 | break; |
8357 | case DW_FORM_block2: | |
7b5a2f43 | 8358 | blk = dwarf_alloc_block (cu); |
c906108c SS |
8359 | blk->size = read_2_bytes (abfd, info_ptr); |
8360 | info_ptr += 2; | |
8361 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
8362 | info_ptr += blk->size; | |
8363 | DW_BLOCK (attr) = blk; | |
8364 | break; | |
8365 | case DW_FORM_block4: | |
7b5a2f43 | 8366 | blk = dwarf_alloc_block (cu); |
c906108c SS |
8367 | blk->size = read_4_bytes (abfd, info_ptr); |
8368 | info_ptr += 4; | |
8369 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
8370 | info_ptr += blk->size; | |
8371 | DW_BLOCK (attr) = blk; | |
8372 | break; | |
8373 | case DW_FORM_data2: | |
8374 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
8375 | info_ptr += 2; | |
8376 | break; | |
8377 | case DW_FORM_data4: | |
8378 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
8379 | info_ptr += 4; | |
8380 | break; | |
8381 | case DW_FORM_data8: | |
8382 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
8383 | info_ptr += 8; | |
8384 | break; | |
2dc7f7b3 TT |
8385 | case DW_FORM_sec_offset: |
8386 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
8387 | info_ptr += bytes_read; | |
8388 | break; | |
c906108c SS |
8389 | case DW_FORM_string: |
8390 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
8285870a | 8391 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
8392 | info_ptr += bytes_read; |
8393 | break; | |
4bdf3d34 JJ |
8394 | case DW_FORM_strp: |
8395 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
8396 | &bytes_read); | |
8285870a | 8397 | DW_STRING_IS_CANONICAL (attr) = 0; |
4bdf3d34 JJ |
8398 | info_ptr += bytes_read; |
8399 | break; | |
2dc7f7b3 | 8400 | case DW_FORM_exprloc: |
c906108c | 8401 | case DW_FORM_block: |
7b5a2f43 | 8402 | blk = dwarf_alloc_block (cu); |
c906108c SS |
8403 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
8404 | info_ptr += bytes_read; | |
8405 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
8406 | info_ptr += blk->size; | |
8407 | DW_BLOCK (attr) = blk; | |
8408 | break; | |
8409 | case DW_FORM_block1: | |
7b5a2f43 | 8410 | blk = dwarf_alloc_block (cu); |
c906108c SS |
8411 | blk->size = read_1_byte (abfd, info_ptr); |
8412 | info_ptr += 1; | |
8413 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
8414 | info_ptr += blk->size; | |
8415 | DW_BLOCK (attr) = blk; | |
8416 | break; | |
8417 | case DW_FORM_data1: | |
8418 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
8419 | info_ptr += 1; | |
8420 | break; | |
8421 | case DW_FORM_flag: | |
8422 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
8423 | info_ptr += 1; | |
8424 | break; | |
2dc7f7b3 TT |
8425 | case DW_FORM_flag_present: |
8426 | DW_UNSND (attr) = 1; | |
8427 | break; | |
c906108c SS |
8428 | case DW_FORM_sdata: |
8429 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
8430 | info_ptr += bytes_read; | |
8431 | break; | |
8432 | case DW_FORM_udata: | |
8433 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
8434 | info_ptr += bytes_read; | |
8435 | break; | |
8436 | case DW_FORM_ref1: | |
10b3939b | 8437 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
8438 | info_ptr += 1; |
8439 | break; | |
8440 | case DW_FORM_ref2: | |
10b3939b | 8441 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
8442 | info_ptr += 2; |
8443 | break; | |
8444 | case DW_FORM_ref4: | |
10b3939b | 8445 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
8446 | info_ptr += 4; |
8447 | break; | |
613e1657 | 8448 | case DW_FORM_ref8: |
10b3939b | 8449 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
8450 | info_ptr += 8; |
8451 | break; | |
348e048f DE |
8452 | case DW_FORM_sig8: |
8453 | /* Convert the signature to something we can record in DW_UNSND | |
8454 | for later lookup. | |
8455 | NOTE: This is NULL if the type wasn't found. */ | |
8456 | DW_SIGNATURED_TYPE (attr) = | |
8457 | lookup_signatured_type (cu->objfile, read_8_bytes (abfd, info_ptr)); | |
8458 | info_ptr += 8; | |
8459 | break; | |
c906108c | 8460 | case DW_FORM_ref_udata: |
10b3939b DJ |
8461 | DW_ADDR (attr) = (cu->header.offset |
8462 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
8463 | info_ptr += bytes_read; |
8464 | break; | |
c906108c | 8465 | case DW_FORM_indirect: |
a8329558 KW |
8466 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
8467 | info_ptr += bytes_read; | |
e7c27a73 | 8468 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 8469 | break; |
c906108c | 8470 | default: |
8a3fe4f8 | 8471 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
8472 | dwarf_form_name (form), |
8473 | bfd_get_filename (abfd)); | |
c906108c | 8474 | } |
28e94949 JB |
8475 | |
8476 | /* We have seen instances where the compiler tried to emit a byte | |
8477 | size attribute of -1 which ended up being encoded as an unsigned | |
8478 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
8479 | an object of this size seems pretty unlikely so we can relatively | |
8480 | safely treat these cases as if the size attribute was invalid and | |
8481 | treat them as zero by default. */ | |
8482 | if (attr->name == DW_AT_byte_size | |
8483 | && form == DW_FORM_data4 | |
8484 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
8485 | { |
8486 | complaint | |
8487 | (&symfile_complaints, | |
43bbcdc2 PH |
8488 | _("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
8489 | hex_string (DW_UNSND (attr))); | |
01c66ae6 JB |
8490 | DW_UNSND (attr) = 0; |
8491 | } | |
28e94949 | 8492 | |
c906108c SS |
8493 | return info_ptr; |
8494 | } | |
8495 | ||
a8329558 KW |
8496 | /* Read an attribute described by an abbreviated attribute. */ |
8497 | ||
fe1b8b76 | 8498 | static gdb_byte * |
a8329558 | 8499 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 8500 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
8501 | { |
8502 | attr->name = abbrev->name; | |
e7c27a73 | 8503 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
8504 | } |
8505 | ||
c906108c SS |
8506 | /* read dwarf information from a buffer */ |
8507 | ||
8508 | static unsigned int | |
fe1b8b76 | 8509 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 8510 | { |
fe1b8b76 | 8511 | return bfd_get_8 (abfd, buf); |
c906108c SS |
8512 | } |
8513 | ||
8514 | static int | |
fe1b8b76 | 8515 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 8516 | { |
fe1b8b76 | 8517 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
8518 | } |
8519 | ||
8520 | static unsigned int | |
fe1b8b76 | 8521 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 8522 | { |
fe1b8b76 | 8523 | return bfd_get_16 (abfd, buf); |
c906108c SS |
8524 | } |
8525 | ||
8526 | static int | |
fe1b8b76 | 8527 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 8528 | { |
fe1b8b76 | 8529 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
8530 | } |
8531 | ||
8532 | static unsigned int | |
fe1b8b76 | 8533 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 8534 | { |
fe1b8b76 | 8535 | return bfd_get_32 (abfd, buf); |
c906108c SS |
8536 | } |
8537 | ||
8538 | static int | |
fe1b8b76 | 8539 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 8540 | { |
fe1b8b76 | 8541 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
8542 | } |
8543 | ||
93311388 | 8544 | static ULONGEST |
fe1b8b76 | 8545 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 8546 | { |
fe1b8b76 | 8547 | return bfd_get_64 (abfd, buf); |
c906108c SS |
8548 | } |
8549 | ||
8550 | static CORE_ADDR | |
fe1b8b76 | 8551 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 8552 | unsigned int *bytes_read) |
c906108c | 8553 | { |
e7c27a73 | 8554 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
8555 | CORE_ADDR retval = 0; |
8556 | ||
107d2387 | 8557 | if (cu_header->signed_addr_p) |
c906108c | 8558 | { |
107d2387 AC |
8559 | switch (cu_header->addr_size) |
8560 | { | |
8561 | case 2: | |
fe1b8b76 | 8562 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
8563 | break; |
8564 | case 4: | |
fe1b8b76 | 8565 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
8566 | break; |
8567 | case 8: | |
fe1b8b76 | 8568 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
8569 | break; |
8570 | default: | |
8e65ff28 | 8571 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8572 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 8573 | bfd_get_filename (abfd)); |
107d2387 AC |
8574 | } |
8575 | } | |
8576 | else | |
8577 | { | |
8578 | switch (cu_header->addr_size) | |
8579 | { | |
8580 | case 2: | |
fe1b8b76 | 8581 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
8582 | break; |
8583 | case 4: | |
fe1b8b76 | 8584 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
8585 | break; |
8586 | case 8: | |
fe1b8b76 | 8587 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
8588 | break; |
8589 | default: | |
8e65ff28 | 8590 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 8591 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 8592 | bfd_get_filename (abfd)); |
107d2387 | 8593 | } |
c906108c | 8594 | } |
64367e0a | 8595 | |
107d2387 AC |
8596 | *bytes_read = cu_header->addr_size; |
8597 | return retval; | |
c906108c SS |
8598 | } |
8599 | ||
f7ef9339 | 8600 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
8601 | specification allows the initial length to take up either 4 bytes |
8602 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
8603 | bytes describe the length and all offsets will be 8 bytes in length | |
8604 | instead of 4. | |
8605 | ||
f7ef9339 KB |
8606 | An older, non-standard 64-bit format is also handled by this |
8607 | function. The older format in question stores the initial length | |
8608 | as an 8-byte quantity without an escape value. Lengths greater | |
8609 | than 2^32 aren't very common which means that the initial 4 bytes | |
8610 | is almost always zero. Since a length value of zero doesn't make | |
8611 | sense for the 32-bit format, this initial zero can be considered to | |
8612 | be an escape value which indicates the presence of the older 64-bit | |
8613 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
8614 | greater than 4GB. If it becomes necessary to handle lengths |
8615 | somewhat larger than 4GB, we could allow other small values (such | |
8616 | as the non-sensical values of 1, 2, and 3) to also be used as | |
8617 | escape values indicating the presence of the old format. | |
f7ef9339 | 8618 | |
917c78fc MK |
8619 | The value returned via bytes_read should be used to increment the |
8620 | relevant pointer after calling read_initial_length(). | |
c764a876 | 8621 | |
613e1657 KB |
8622 | [ Note: read_initial_length() and read_offset() are based on the |
8623 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 8624 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
8625 | from: |
8626 | ||
f7ef9339 | 8627 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 8628 | |
613e1657 KB |
8629 | This document is only a draft and is subject to change. (So beware.) |
8630 | ||
f7ef9339 | 8631 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
8632 | determined empirically by examining 64-bit ELF files produced by |
8633 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
8634 | |
8635 | - Kevin, July 16, 2002 | |
613e1657 KB |
8636 | ] */ |
8637 | ||
8638 | static LONGEST | |
c764a876 | 8639 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 8640 | { |
fe1b8b76 | 8641 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 8642 | |
dd373385 | 8643 | if (length == 0xffffffff) |
613e1657 | 8644 | { |
fe1b8b76 | 8645 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 8646 | *bytes_read = 12; |
613e1657 | 8647 | } |
dd373385 | 8648 | else if (length == 0) |
f7ef9339 | 8649 | { |
dd373385 | 8650 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 8651 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 8652 | *bytes_read = 8; |
f7ef9339 | 8653 | } |
613e1657 KB |
8654 | else |
8655 | { | |
8656 | *bytes_read = 4; | |
613e1657 KB |
8657 | } |
8658 | ||
c764a876 DE |
8659 | return length; |
8660 | } | |
dd373385 | 8661 | |
c764a876 DE |
8662 | /* Cover function for read_initial_length. |
8663 | Returns the length of the object at BUF, and stores the size of the | |
8664 | initial length in *BYTES_READ and stores the size that offsets will be in | |
8665 | *OFFSET_SIZE. | |
8666 | If the initial length size is not equivalent to that specified in | |
8667 | CU_HEADER then issue a complaint. | |
8668 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 8669 | |
c764a876 DE |
8670 | static LONGEST |
8671 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
8672 | const struct comp_unit_head *cu_header, | |
8673 | unsigned int *bytes_read, | |
8674 | unsigned int *offset_size) | |
8675 | { | |
8676 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
8677 | ||
8678 | gdb_assert (cu_header->initial_length_size == 4 | |
8679 | || cu_header->initial_length_size == 8 | |
8680 | || cu_header->initial_length_size == 12); | |
8681 | ||
8682 | if (cu_header->initial_length_size != *bytes_read) | |
8683 | complaint (&symfile_complaints, | |
8684 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 8685 | |
c764a876 | 8686 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 8687 | return length; |
613e1657 KB |
8688 | } |
8689 | ||
8690 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 8691 | given by cu_header->offset_size. */ |
613e1657 KB |
8692 | |
8693 | static LONGEST | |
fe1b8b76 | 8694 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 8695 | unsigned int *bytes_read) |
c764a876 DE |
8696 | { |
8697 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 8698 | |
c764a876 DE |
8699 | *bytes_read = cu_header->offset_size; |
8700 | return offset; | |
8701 | } | |
8702 | ||
8703 | /* Read an offset from the data stream. */ | |
8704 | ||
8705 | static LONGEST | |
8706 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
8707 | { |
8708 | LONGEST retval = 0; | |
8709 | ||
c764a876 | 8710 | switch (offset_size) |
613e1657 KB |
8711 | { |
8712 | case 4: | |
fe1b8b76 | 8713 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
8714 | break; |
8715 | case 8: | |
fe1b8b76 | 8716 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
8717 | break; |
8718 | default: | |
8e65ff28 | 8719 | internal_error (__FILE__, __LINE__, |
c764a876 | 8720 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 8721 | bfd_get_filename (abfd)); |
613e1657 KB |
8722 | } |
8723 | ||
917c78fc | 8724 | return retval; |
613e1657 KB |
8725 | } |
8726 | ||
fe1b8b76 JB |
8727 | static gdb_byte * |
8728 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
8729 | { |
8730 | /* If the size of a host char is 8 bits, we can return a pointer | |
8731 | to the buffer, otherwise we have to copy the data to a buffer | |
8732 | allocated on the temporary obstack. */ | |
4bdf3d34 | 8733 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 8734 | return buf; |
c906108c SS |
8735 | } |
8736 | ||
8737 | static char * | |
fe1b8b76 | 8738 | read_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
8739 | { |
8740 | /* If the size of a host char is 8 bits, we can return a pointer | |
8741 | to the string, otherwise we have to copy the string to a buffer | |
8742 | allocated on the temporary obstack. */ | |
4bdf3d34 | 8743 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
8744 | if (*buf == '\0') |
8745 | { | |
8746 | *bytes_read_ptr = 1; | |
8747 | return NULL; | |
8748 | } | |
fe1b8b76 JB |
8749 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
8750 | return (char *) buf; | |
4bdf3d34 JJ |
8751 | } |
8752 | ||
8753 | static char * | |
fe1b8b76 | 8754 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
8755 | const struct comp_unit_head *cu_header, |
8756 | unsigned int *bytes_read_ptr) | |
8757 | { | |
c764a876 | 8758 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); |
c906108c | 8759 | |
be391dca | 8760 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->str); |
dce234bc | 8761 | if (dwarf2_per_objfile->str.buffer == NULL) |
c906108c | 8762 | { |
8a3fe4f8 | 8763 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 8764 | bfd_get_filename (abfd)); |
4bdf3d34 | 8765 | return NULL; |
c906108c | 8766 | } |
dce234bc | 8767 | if (str_offset >= dwarf2_per_objfile->str.size) |
c906108c | 8768 | { |
8a3fe4f8 | 8769 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 8770 | bfd_get_filename (abfd)); |
c906108c SS |
8771 | return NULL; |
8772 | } | |
4bdf3d34 | 8773 | gdb_assert (HOST_CHAR_BIT == 8); |
dce234bc | 8774 | if (dwarf2_per_objfile->str.buffer[str_offset] == '\0') |
4bdf3d34 | 8775 | return NULL; |
dce234bc | 8776 | return (char *) (dwarf2_per_objfile->str.buffer + str_offset); |
c906108c SS |
8777 | } |
8778 | ||
ce5d95e1 | 8779 | static unsigned long |
fe1b8b76 | 8780 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 8781 | { |
ce5d95e1 JB |
8782 | unsigned long result; |
8783 | unsigned int num_read; | |
c906108c SS |
8784 | int i, shift; |
8785 | unsigned char byte; | |
8786 | ||
8787 | result = 0; | |
8788 | shift = 0; | |
8789 | num_read = 0; | |
8790 | i = 0; | |
8791 | while (1) | |
8792 | { | |
fe1b8b76 | 8793 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
8794 | buf++; |
8795 | num_read++; | |
ce5d95e1 | 8796 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
8797 | if ((byte & 128) == 0) |
8798 | { | |
8799 | break; | |
8800 | } | |
8801 | shift += 7; | |
8802 | } | |
8803 | *bytes_read_ptr = num_read; | |
8804 | return result; | |
8805 | } | |
8806 | ||
ce5d95e1 | 8807 | static long |
fe1b8b76 | 8808 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 8809 | { |
ce5d95e1 | 8810 | long result; |
77e0b926 | 8811 | int i, shift, num_read; |
c906108c SS |
8812 | unsigned char byte; |
8813 | ||
8814 | result = 0; | |
8815 | shift = 0; | |
c906108c SS |
8816 | num_read = 0; |
8817 | i = 0; | |
8818 | while (1) | |
8819 | { | |
fe1b8b76 | 8820 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
8821 | buf++; |
8822 | num_read++; | |
ce5d95e1 | 8823 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
8824 | shift += 7; |
8825 | if ((byte & 128) == 0) | |
8826 | { | |
8827 | break; | |
8828 | } | |
8829 | } | |
77e0b926 DJ |
8830 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
8831 | result |= -(((long)1) << shift); | |
c906108c SS |
8832 | *bytes_read_ptr = num_read; |
8833 | return result; | |
8834 | } | |
8835 | ||
4bb7a0a7 DJ |
8836 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
8837 | ||
fe1b8b76 JB |
8838 | static gdb_byte * |
8839 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
8840 | { |
8841 | int byte; | |
8842 | ||
8843 | while (1) | |
8844 | { | |
fe1b8b76 | 8845 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
8846 | buf++; |
8847 | if ((byte & 128) == 0) | |
8848 | return buf; | |
8849 | } | |
8850 | } | |
8851 | ||
c906108c | 8852 | static void |
e142c38c | 8853 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
8854 | { |
8855 | switch (lang) | |
8856 | { | |
8857 | case DW_LANG_C89: | |
76bee0cc | 8858 | case DW_LANG_C99: |
c906108c | 8859 | case DW_LANG_C: |
e142c38c | 8860 | cu->language = language_c; |
c906108c SS |
8861 | break; |
8862 | case DW_LANG_C_plus_plus: | |
e142c38c | 8863 | cu->language = language_cplus; |
c906108c | 8864 | break; |
6aecb9c2 JB |
8865 | case DW_LANG_D: |
8866 | cu->language = language_d; | |
8867 | break; | |
c906108c SS |
8868 | case DW_LANG_Fortran77: |
8869 | case DW_LANG_Fortran90: | |
b21b22e0 | 8870 | case DW_LANG_Fortran95: |
e142c38c | 8871 | cu->language = language_fortran; |
c906108c SS |
8872 | break; |
8873 | case DW_LANG_Mips_Assembler: | |
e142c38c | 8874 | cu->language = language_asm; |
c906108c | 8875 | break; |
bebd888e | 8876 | case DW_LANG_Java: |
e142c38c | 8877 | cu->language = language_java; |
bebd888e | 8878 | break; |
c906108c | 8879 | case DW_LANG_Ada83: |
8aaf0b47 | 8880 | case DW_LANG_Ada95: |
bc5f45f8 JB |
8881 | cu->language = language_ada; |
8882 | break; | |
72019c9c GM |
8883 | case DW_LANG_Modula2: |
8884 | cu->language = language_m2; | |
8885 | break; | |
fe8e67fd PM |
8886 | case DW_LANG_Pascal83: |
8887 | cu->language = language_pascal; | |
8888 | break; | |
22566fbd DJ |
8889 | case DW_LANG_ObjC: |
8890 | cu->language = language_objc; | |
8891 | break; | |
c906108c SS |
8892 | case DW_LANG_Cobol74: |
8893 | case DW_LANG_Cobol85: | |
c906108c | 8894 | default: |
e142c38c | 8895 | cu->language = language_minimal; |
c906108c SS |
8896 | break; |
8897 | } | |
e142c38c | 8898 | cu->language_defn = language_def (cu->language); |
c906108c SS |
8899 | } |
8900 | ||
8901 | /* Return the named attribute or NULL if not there. */ | |
8902 | ||
8903 | static struct attribute * | |
e142c38c | 8904 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
8905 | { |
8906 | unsigned int i; | |
8907 | struct attribute *spec = NULL; | |
8908 | ||
8909 | for (i = 0; i < die->num_attrs; ++i) | |
8910 | { | |
8911 | if (die->attrs[i].name == name) | |
10b3939b | 8912 | return &die->attrs[i]; |
c906108c SS |
8913 | if (die->attrs[i].name == DW_AT_specification |
8914 | || die->attrs[i].name == DW_AT_abstract_origin) | |
8915 | spec = &die->attrs[i]; | |
8916 | } | |
c906108c | 8917 | |
10b3939b | 8918 | if (spec) |
f2f0e013 DJ |
8919 | { |
8920 | die = follow_die_ref (die, spec, &cu); | |
8921 | return dwarf2_attr (die, name, cu); | |
8922 | } | |
c5aa993b | 8923 | |
c906108c SS |
8924 | return NULL; |
8925 | } | |
8926 | ||
348e048f DE |
8927 | /* Return the named attribute or NULL if not there, |
8928 | but do not follow DW_AT_specification, etc. | |
8929 | This is for use in contexts where we're reading .debug_types dies. | |
8930 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
8931 | back up the chain, and we want to go down. */ | |
8932 | ||
8933 | static struct attribute * | |
8934 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name, | |
8935 | struct dwarf2_cu *cu) | |
8936 | { | |
8937 | unsigned int i; | |
8938 | ||
8939 | for (i = 0; i < die->num_attrs; ++i) | |
8940 | if (die->attrs[i].name == name) | |
8941 | return &die->attrs[i]; | |
8942 | ||
8943 | return NULL; | |
8944 | } | |
8945 | ||
05cf31d1 JB |
8946 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
8947 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 8948 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
8949 | |
8950 | static int | |
8951 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
8952 | { | |
8953 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
8954 | ||
8955 | return (attr && DW_UNSND (attr)); | |
8956 | } | |
8957 | ||
3ca72b44 | 8958 | static int |
e142c38c | 8959 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 8960 | { |
05cf31d1 JB |
8961 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
8962 | which value is non-zero. However, we have to be careful with | |
8963 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
8964 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
8965 | end up accidently finding a declaration attribute that belongs | |
8966 | to a different DIE referenced by the specification attribute, | |
8967 | even though the given DIE does not have a declaration attribute. */ | |
8968 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
8969 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
8970 | } |
8971 | ||
63d06c5c | 8972 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 8973 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
8974 | containing the return value on output. If there is no |
8975 | specification, but there is an abstract origin, that is | |
8976 | returned. */ | |
63d06c5c DC |
8977 | |
8978 | static struct die_info * | |
f2f0e013 | 8979 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 8980 | { |
f2f0e013 DJ |
8981 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
8982 | *spec_cu); | |
63d06c5c | 8983 | |
edb3359d DJ |
8984 | if (spec_attr == NULL) |
8985 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
8986 | ||
63d06c5c DC |
8987 | if (spec_attr == NULL) |
8988 | return NULL; | |
8989 | else | |
f2f0e013 | 8990 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 8991 | } |
c906108c | 8992 | |
debd256d JB |
8993 | /* Free the line_header structure *LH, and any arrays and strings it |
8994 | refers to. */ | |
8995 | static void | |
8996 | free_line_header (struct line_header *lh) | |
8997 | { | |
8998 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 8999 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
9000 | |
9001 | /* Remember that all the lh->file_names[i].name pointers are | |
9002 | pointers into debug_line_buffer, and don't need to be freed. */ | |
9003 | if (lh->file_names) | |
a8bc7b56 | 9004 | xfree (lh->file_names); |
debd256d JB |
9005 | |
9006 | /* Similarly for the include directory names. */ | |
9007 | if (lh->include_dirs) | |
a8bc7b56 | 9008 | xfree (lh->include_dirs); |
debd256d | 9009 | |
a8bc7b56 | 9010 | xfree (lh); |
debd256d JB |
9011 | } |
9012 | ||
9013 | ||
9014 | /* Add an entry to LH's include directory table. */ | |
9015 | static void | |
9016 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 9017 | { |
debd256d JB |
9018 | /* Grow the array if necessary. */ |
9019 | if (lh->include_dirs_size == 0) | |
c5aa993b | 9020 | { |
debd256d JB |
9021 | lh->include_dirs_size = 1; /* for testing */ |
9022 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
9023 | * sizeof (*lh->include_dirs)); | |
9024 | } | |
9025 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
9026 | { | |
9027 | lh->include_dirs_size *= 2; | |
9028 | lh->include_dirs = xrealloc (lh->include_dirs, | |
9029 | (lh->include_dirs_size | |
9030 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 9031 | } |
c906108c | 9032 | |
debd256d JB |
9033 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
9034 | } | |
6e70227d | 9035 | |
debd256d JB |
9036 | |
9037 | /* Add an entry to LH's file name table. */ | |
9038 | static void | |
9039 | add_file_name (struct line_header *lh, | |
9040 | char *name, | |
9041 | unsigned int dir_index, | |
9042 | unsigned int mod_time, | |
9043 | unsigned int length) | |
9044 | { | |
9045 | struct file_entry *fe; | |
9046 | ||
9047 | /* Grow the array if necessary. */ | |
9048 | if (lh->file_names_size == 0) | |
9049 | { | |
9050 | lh->file_names_size = 1; /* for testing */ | |
9051 | lh->file_names = xmalloc (lh->file_names_size | |
9052 | * sizeof (*lh->file_names)); | |
9053 | } | |
9054 | else if (lh->num_file_names >= lh->file_names_size) | |
9055 | { | |
9056 | lh->file_names_size *= 2; | |
9057 | lh->file_names = xrealloc (lh->file_names, | |
9058 | (lh->file_names_size | |
9059 | * sizeof (*lh->file_names))); | |
9060 | } | |
9061 | ||
9062 | fe = &lh->file_names[lh->num_file_names++]; | |
9063 | fe->name = name; | |
9064 | fe->dir_index = dir_index; | |
9065 | fe->mod_time = mod_time; | |
9066 | fe->length = length; | |
aaa75496 | 9067 | fe->included_p = 0; |
cb1df416 | 9068 | fe->symtab = NULL; |
debd256d | 9069 | } |
6e70227d | 9070 | |
debd256d JB |
9071 | |
9072 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
9073 | .debug_line, according to the endianness of ABFD. Return a pointer |
9074 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
9075 | |
9076 | NOTE: the strings in the include directory and file name tables of | |
9077 | the returned object point into debug_line_buffer, and must not be | |
9078 | freed. */ | |
9079 | static struct line_header * | |
9080 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 9081 | struct dwarf2_cu *cu) |
debd256d JB |
9082 | { |
9083 | struct cleanup *back_to; | |
9084 | struct line_header *lh; | |
fe1b8b76 | 9085 | gdb_byte *line_ptr; |
c764a876 | 9086 | unsigned int bytes_read, offset_size; |
debd256d JB |
9087 | int i; |
9088 | char *cur_dir, *cur_file; | |
9089 | ||
be391dca | 9090 | dwarf2_read_section (dwarf2_per_objfile->objfile, &dwarf2_per_objfile->line); |
dce234bc | 9091 | if (dwarf2_per_objfile->line.buffer == NULL) |
debd256d | 9092 | { |
e2e0b3e5 | 9093 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
9094 | return 0; |
9095 | } | |
9096 | ||
a738430d MK |
9097 | /* Make sure that at least there's room for the total_length field. |
9098 | That could be 12 bytes long, but we're just going to fudge that. */ | |
dce234bc | 9099 | if (offset + 4 >= dwarf2_per_objfile->line.size) |
debd256d | 9100 | { |
4d3c2250 | 9101 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
9102 | return 0; |
9103 | } | |
9104 | ||
9105 | lh = xmalloc (sizeof (*lh)); | |
9106 | memset (lh, 0, sizeof (*lh)); | |
9107 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
9108 | (void *) lh); | |
9109 | ||
dce234bc | 9110 | line_ptr = dwarf2_per_objfile->line.buffer + offset; |
debd256d | 9111 | |
a738430d | 9112 | /* Read in the header. */ |
6e70227d | 9113 | lh->total_length = |
c764a876 DE |
9114 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
9115 | &bytes_read, &offset_size); | |
debd256d | 9116 | line_ptr += bytes_read; |
dce234bc PP |
9117 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line.buffer |
9118 | + dwarf2_per_objfile->line.size)) | |
debd256d | 9119 | { |
4d3c2250 | 9120 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
9121 | return 0; |
9122 | } | |
9123 | lh->statement_program_end = line_ptr + lh->total_length; | |
9124 | lh->version = read_2_bytes (abfd, line_ptr); | |
9125 | line_ptr += 2; | |
c764a876 DE |
9126 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
9127 | line_ptr += offset_size; | |
debd256d JB |
9128 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
9129 | line_ptr += 1; | |
2dc7f7b3 TT |
9130 | if (lh->version >= 4) |
9131 | { | |
9132 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
9133 | line_ptr += 1; | |
9134 | } | |
9135 | else | |
9136 | lh->maximum_ops_per_instruction = 1; | |
9137 | ||
9138 | if (lh->maximum_ops_per_instruction == 0) | |
9139 | { | |
9140 | lh->maximum_ops_per_instruction = 1; | |
9141 | complaint (&symfile_complaints, | |
9142 | _("invalid maximum_ops_per_instruction in `.debug_line' section")); | |
9143 | } | |
9144 | ||
debd256d JB |
9145 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
9146 | line_ptr += 1; | |
9147 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
9148 | line_ptr += 1; | |
9149 | lh->line_range = read_1_byte (abfd, line_ptr); | |
9150 | line_ptr += 1; | |
9151 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
9152 | line_ptr += 1; | |
9153 | lh->standard_opcode_lengths | |
fe1b8b76 | 9154 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
9155 | |
9156 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
9157 | for (i = 1; i < lh->opcode_base; ++i) | |
9158 | { | |
9159 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
9160 | line_ptr += 1; | |
9161 | } | |
9162 | ||
a738430d | 9163 | /* Read directory table. */ |
debd256d JB |
9164 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
9165 | { | |
9166 | line_ptr += bytes_read; | |
9167 | add_include_dir (lh, cur_dir); | |
9168 | } | |
9169 | line_ptr += bytes_read; | |
9170 | ||
a738430d | 9171 | /* Read file name table. */ |
debd256d JB |
9172 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
9173 | { | |
9174 | unsigned int dir_index, mod_time, length; | |
9175 | ||
9176 | line_ptr += bytes_read; | |
9177 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9178 | line_ptr += bytes_read; | |
9179 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9180 | line_ptr += bytes_read; | |
9181 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9182 | line_ptr += bytes_read; | |
9183 | ||
9184 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
9185 | } | |
9186 | line_ptr += bytes_read; | |
6e70227d | 9187 | lh->statement_program_start = line_ptr; |
debd256d | 9188 | |
dce234bc PP |
9189 | if (line_ptr > (dwarf2_per_objfile->line.buffer |
9190 | + dwarf2_per_objfile->line.size)) | |
4d3c2250 | 9191 | complaint (&symfile_complaints, |
e2e0b3e5 | 9192 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
9193 | |
9194 | discard_cleanups (back_to); | |
9195 | return lh; | |
9196 | } | |
c906108c | 9197 | |
5fb290d7 DJ |
9198 | /* This function exists to work around a bug in certain compilers |
9199 | (particularly GCC 2.95), in which the first line number marker of a | |
9200 | function does not show up until after the prologue, right before | |
9201 | the second line number marker. This function shifts ADDRESS down | |
9202 | to the beginning of the function if necessary, and is called on | |
9203 | addresses passed to record_line. */ | |
9204 | ||
9205 | static CORE_ADDR | |
e142c38c | 9206 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
9207 | { |
9208 | struct function_range *fn; | |
9209 | ||
9210 | /* Find the function_range containing address. */ | |
e142c38c | 9211 | if (!cu->first_fn) |
5fb290d7 DJ |
9212 | return address; |
9213 | ||
e142c38c DJ |
9214 | if (!cu->cached_fn) |
9215 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 9216 | |
e142c38c | 9217 | fn = cu->cached_fn; |
5fb290d7 DJ |
9218 | while (fn) |
9219 | if (fn->lowpc <= address && fn->highpc > address) | |
9220 | goto found; | |
9221 | else | |
9222 | fn = fn->next; | |
9223 | ||
e142c38c DJ |
9224 | fn = cu->first_fn; |
9225 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
9226 | if (fn->lowpc <= address && fn->highpc > address) |
9227 | goto found; | |
9228 | else | |
9229 | fn = fn->next; | |
9230 | ||
9231 | return address; | |
9232 | ||
9233 | found: | |
9234 | if (fn->seen_line) | |
9235 | return address; | |
9236 | if (address != fn->lowpc) | |
4d3c2250 | 9237 | complaint (&symfile_complaints, |
e2e0b3e5 | 9238 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 9239 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
9240 | fn->seen_line = 1; |
9241 | return fn->lowpc; | |
9242 | } | |
9243 | ||
aaa75496 JB |
9244 | /* Decode the Line Number Program (LNP) for the given line_header |
9245 | structure and CU. The actual information extracted and the type | |
9246 | of structures created from the LNP depends on the value of PST. | |
9247 | ||
9248 | 1. If PST is NULL, then this procedure uses the data from the program | |
9249 | to create all necessary symbol tables, and their linetables. | |
9250 | The compilation directory of the file is passed in COMP_DIR, | |
9251 | and must not be NULL. | |
6e70227d | 9252 | |
aaa75496 JB |
9253 | 2. If PST is not NULL, this procedure reads the program to determine |
9254 | the list of files included by the unit represented by PST, and | |
9255 | builds all the associated partial symbol tables. In this case, | |
9256 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
9257 | is not used to compute the full name of the symtab, and therefore | |
9258 | omitting it when building the partial symtab does not introduce | |
9259 | the potential for inconsistency - a partial symtab and its associated | |
9260 | symbtab having a different fullname -). */ | |
debd256d | 9261 | |
c906108c | 9262 | static void |
debd256d | 9263 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 9264 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 9265 | { |
a8c50c1f | 9266 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 9267 | gdb_byte *line_end; |
a8c50c1f | 9268 | unsigned int bytes_read, extended_len; |
c906108c | 9269 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
9270 | CORE_ADDR baseaddr; |
9271 | struct objfile *objfile = cu->objfile; | |
fbf65064 | 9272 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
aaa75496 | 9273 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 9274 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
e142c38c DJ |
9275 | |
9276 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 9277 | |
debd256d JB |
9278 | line_ptr = lh->statement_program_start; |
9279 | line_end = lh->statement_program_end; | |
c906108c SS |
9280 | |
9281 | /* Read the statement sequences until there's nothing left. */ | |
9282 | while (line_ptr < line_end) | |
9283 | { | |
9284 | /* state machine registers */ | |
9285 | CORE_ADDR address = 0; | |
9286 | unsigned int file = 1; | |
9287 | unsigned int line = 1; | |
9288 | unsigned int column = 0; | |
debd256d | 9289 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
9290 | int basic_block = 0; |
9291 | int end_sequence = 0; | |
fbf65064 | 9292 | CORE_ADDR addr; |
2dc7f7b3 | 9293 | unsigned char op_index = 0; |
c906108c | 9294 | |
aaa75496 | 9295 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 9296 | { |
aaa75496 | 9297 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
9298 | /* lh->include_dirs and lh->file_names are 0-based, but the |
9299 | directory and file name numbers in the statement program | |
9300 | are 1-based. */ | |
9301 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 9302 | char *dir = NULL; |
a738430d | 9303 | |
debd256d JB |
9304 | if (fe->dir_index) |
9305 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
9306 | |
9307 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
9308 | } |
9309 | ||
a738430d | 9310 | /* Decode the table. */ |
c5aa993b | 9311 | while (!end_sequence) |
c906108c SS |
9312 | { |
9313 | op_code = read_1_byte (abfd, line_ptr); | |
9314 | line_ptr += 1; | |
59205f5a JB |
9315 | if (line_ptr > line_end) |
9316 | { | |
9317 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
9318 | break; | |
9319 | } | |
9aa1fe7e | 9320 | |
debd256d | 9321 | if (op_code >= lh->opcode_base) |
6e70227d | 9322 | { |
a738430d | 9323 | /* Special operand. */ |
debd256d | 9324 | adj_opcode = op_code - lh->opcode_base; |
2dc7f7b3 TT |
9325 | address += (((op_index + (adj_opcode / lh->line_range)) |
9326 | / lh->maximum_ops_per_instruction) | |
9327 | * lh->minimum_instruction_length); | |
9328 | op_index = ((op_index + (adj_opcode / lh->line_range)) | |
9329 | % lh->maximum_ops_per_instruction); | |
debd256d | 9330 | line += lh->line_base + (adj_opcode % lh->line_range); |
59205f5a | 9331 | if (lh->num_file_names < file || file == 0) |
25e43795 | 9332 | dwarf2_debug_line_missing_file_complaint (); |
2dc7f7b3 TT |
9333 | /* For now we ignore lines not starting on an |
9334 | instruction boundary. */ | |
9335 | else if (op_index == 0) | |
25e43795 DJ |
9336 | { |
9337 | lh->file_names[file - 1].included_p = 1; | |
ca5f395d | 9338 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
9339 | { |
9340 | if (last_subfile != current_subfile) | |
9341 | { | |
9342 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
9343 | if (last_subfile) | |
9344 | record_line (last_subfile, 0, addr); | |
9345 | last_subfile = current_subfile; | |
9346 | } | |
25e43795 | 9347 | /* Append row to matrix using current values. */ |
fbf65064 UW |
9348 | addr = check_cu_functions (address, cu); |
9349 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
9350 | record_line (current_subfile, line, addr); | |
366da635 | 9351 | } |
25e43795 | 9352 | } |
ca5f395d | 9353 | basic_block = 0; |
9aa1fe7e GK |
9354 | } |
9355 | else switch (op_code) | |
c906108c SS |
9356 | { |
9357 | case DW_LNS_extended_op: | |
a8c50c1f | 9358 | extended_len = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
473b7be6 | 9359 | line_ptr += bytes_read; |
a8c50c1f | 9360 | extended_end = line_ptr + extended_len; |
c906108c SS |
9361 | extended_op = read_1_byte (abfd, line_ptr); |
9362 | line_ptr += 1; | |
9363 | switch (extended_op) | |
9364 | { | |
9365 | case DW_LNE_end_sequence: | |
9366 | end_sequence = 1; | |
c906108c SS |
9367 | break; |
9368 | case DW_LNE_set_address: | |
e7c27a73 | 9369 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
2dc7f7b3 | 9370 | op_index = 0; |
107d2387 AC |
9371 | line_ptr += bytes_read; |
9372 | address += baseaddr; | |
c906108c SS |
9373 | break; |
9374 | case DW_LNE_define_file: | |
debd256d JB |
9375 | { |
9376 | char *cur_file; | |
9377 | unsigned int dir_index, mod_time, length; | |
6e70227d | 9378 | |
debd256d JB |
9379 | cur_file = read_string (abfd, line_ptr, &bytes_read); |
9380 | line_ptr += bytes_read; | |
9381 | dir_index = | |
9382 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9383 | line_ptr += bytes_read; | |
9384 | mod_time = | |
9385 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9386 | line_ptr += bytes_read; | |
9387 | length = | |
9388 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9389 | line_ptr += bytes_read; | |
9390 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
9391 | } | |
c906108c | 9392 | break; |
d0c6ba3d CC |
9393 | case DW_LNE_set_discriminator: |
9394 | /* The discriminator is not interesting to the debugger; | |
9395 | just ignore it. */ | |
9396 | line_ptr = extended_end; | |
9397 | break; | |
c906108c | 9398 | default: |
4d3c2250 | 9399 | complaint (&symfile_complaints, |
e2e0b3e5 | 9400 | _("mangled .debug_line section")); |
debd256d | 9401 | return; |
c906108c | 9402 | } |
a8c50c1f DJ |
9403 | /* Make sure that we parsed the extended op correctly. If e.g. |
9404 | we expected a different address size than the producer used, | |
9405 | we may have read the wrong number of bytes. */ | |
9406 | if (line_ptr != extended_end) | |
9407 | { | |
9408 | complaint (&symfile_complaints, | |
9409 | _("mangled .debug_line section")); | |
9410 | return; | |
9411 | } | |
c906108c SS |
9412 | break; |
9413 | case DW_LNS_copy: | |
59205f5a | 9414 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
9415 | dwarf2_debug_line_missing_file_complaint (); |
9416 | else | |
366da635 | 9417 | { |
25e43795 | 9418 | lh->file_names[file - 1].included_p = 1; |
ca5f395d | 9419 | if (!decode_for_pst_p && is_stmt) |
fbf65064 UW |
9420 | { |
9421 | if (last_subfile != current_subfile) | |
9422 | { | |
9423 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
9424 | if (last_subfile) | |
9425 | record_line (last_subfile, 0, addr); | |
9426 | last_subfile = current_subfile; | |
9427 | } | |
9428 | addr = check_cu_functions (address, cu); | |
9429 | addr = gdbarch_addr_bits_remove (gdbarch, addr); | |
9430 | record_line (current_subfile, line, addr); | |
9431 | } | |
366da635 | 9432 | } |
c906108c SS |
9433 | basic_block = 0; |
9434 | break; | |
9435 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
9436 | { |
9437 | CORE_ADDR adjust | |
9438 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9439 | ||
9440 | address += (((op_index + adjust) | |
9441 | / lh->maximum_ops_per_instruction) | |
9442 | * lh->minimum_instruction_length); | |
9443 | op_index = ((op_index + adjust) | |
9444 | % lh->maximum_ops_per_instruction); | |
9445 | line_ptr += bytes_read; | |
9446 | } | |
c906108c SS |
9447 | break; |
9448 | case DW_LNS_advance_line: | |
9449 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
9450 | line_ptr += bytes_read; | |
9451 | break; | |
9452 | case DW_LNS_set_file: | |
debd256d | 9453 | { |
a738430d MK |
9454 | /* The arrays lh->include_dirs and lh->file_names are |
9455 | 0-based, but the directory and file name numbers in | |
9456 | the statement program are 1-based. */ | |
debd256d | 9457 | struct file_entry *fe; |
4f1520fb | 9458 | char *dir = NULL; |
a738430d | 9459 | |
debd256d JB |
9460 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
9461 | line_ptr += bytes_read; | |
59205f5a | 9462 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
9463 | dwarf2_debug_line_missing_file_complaint (); |
9464 | else | |
9465 | { | |
9466 | fe = &lh->file_names[file - 1]; | |
9467 | if (fe->dir_index) | |
9468 | dir = lh->include_dirs[fe->dir_index - 1]; | |
9469 | if (!decode_for_pst_p) | |
9470 | { | |
9471 | last_subfile = current_subfile; | |
9472 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
9473 | } | |
9474 | } | |
debd256d | 9475 | } |
c906108c SS |
9476 | break; |
9477 | case DW_LNS_set_column: | |
9478 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9479 | line_ptr += bytes_read; | |
9480 | break; | |
9481 | case DW_LNS_negate_stmt: | |
9482 | is_stmt = (!is_stmt); | |
9483 | break; | |
9484 | case DW_LNS_set_basic_block: | |
9485 | basic_block = 1; | |
9486 | break; | |
c2c6d25f JM |
9487 | /* Add to the address register of the state machine the |
9488 | address increment value corresponding to special opcode | |
a738430d MK |
9489 | 255. I.e., this value is scaled by the minimum |
9490 | instruction length since special opcode 255 would have | |
9491 | scaled the the increment. */ | |
c906108c | 9492 | case DW_LNS_const_add_pc: |
2dc7f7b3 TT |
9493 | { |
9494 | CORE_ADDR adjust = (255 - lh->opcode_base) / lh->line_range; | |
9495 | ||
9496 | address += (((op_index + adjust) | |
9497 | / lh->maximum_ops_per_instruction) | |
9498 | * lh->minimum_instruction_length); | |
9499 | op_index = ((op_index + adjust) | |
9500 | % lh->maximum_ops_per_instruction); | |
9501 | } | |
c906108c SS |
9502 | break; |
9503 | case DW_LNS_fixed_advance_pc: | |
9504 | address += read_2_bytes (abfd, line_ptr); | |
2dc7f7b3 | 9505 | op_index = 0; |
c906108c SS |
9506 | line_ptr += 2; |
9507 | break; | |
9aa1fe7e | 9508 | default: |
a738430d MK |
9509 | { |
9510 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 9511 | int i; |
a738430d | 9512 | |
debd256d | 9513 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
9514 | { |
9515 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
9516 | line_ptr += bytes_read; | |
9517 | } | |
9518 | } | |
c906108c SS |
9519 | } |
9520 | } | |
59205f5a JB |
9521 | if (lh->num_file_names < file || file == 0) |
9522 | dwarf2_debug_line_missing_file_complaint (); | |
9523 | else | |
9524 | { | |
9525 | lh->file_names[file - 1].included_p = 1; | |
9526 | if (!decode_for_pst_p) | |
fbf65064 UW |
9527 | { |
9528 | addr = gdbarch_addr_bits_remove (gdbarch, address); | |
9529 | record_line (current_subfile, 0, addr); | |
9530 | } | |
59205f5a | 9531 | } |
c906108c | 9532 | } |
aaa75496 JB |
9533 | |
9534 | if (decode_for_pst_p) | |
9535 | { | |
9536 | int file_index; | |
9537 | ||
9538 | /* Now that we're done scanning the Line Header Program, we can | |
9539 | create the psymtab of each included file. */ | |
9540 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
9541 | if (lh->file_names[file_index].included_p == 1) | |
9542 | { | |
5b5464ad JB |
9543 | const struct file_entry fe = lh->file_names [file_index]; |
9544 | char *include_name = fe.name; | |
9545 | char *dir_name = NULL; | |
9546 | char *pst_filename = pst->filename; | |
9547 | ||
9548 | if (fe.dir_index) | |
9549 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
9550 | ||
9551 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
9552 | { | |
1754f103 MK |
9553 | include_name = concat (dir_name, SLASH_STRING, |
9554 | include_name, (char *)NULL); | |
5b5464ad JB |
9555 | make_cleanup (xfree, include_name); |
9556 | } | |
9557 | ||
9558 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
9559 | { | |
1754f103 MK |
9560 | pst_filename = concat (pst->dirname, SLASH_STRING, |
9561 | pst_filename, (char *)NULL); | |
5b5464ad JB |
9562 | make_cleanup (xfree, pst_filename); |
9563 | } | |
9564 | ||
9565 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
9566 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
9567 | } | |
9568 | } | |
cb1df416 DJ |
9569 | else |
9570 | { | |
9571 | /* Make sure a symtab is created for every file, even files | |
9572 | which contain only variables (i.e. no code with associated | |
9573 | line numbers). */ | |
9574 | ||
9575 | int i; | |
9576 | struct file_entry *fe; | |
9577 | ||
9578 | for (i = 0; i < lh->num_file_names; i++) | |
9579 | { | |
9580 | char *dir = NULL; | |
9a619af0 | 9581 | |
cb1df416 DJ |
9582 | fe = &lh->file_names[i]; |
9583 | if (fe->dir_index) | |
9584 | dir = lh->include_dirs[fe->dir_index - 1]; | |
9585 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
9586 | ||
9587 | /* Skip the main file; we don't need it, and it must be | |
9588 | allocated last, so that it will show up before the | |
9589 | non-primary symtabs in the objfile's symtab list. */ | |
9590 | if (current_subfile == first_subfile) | |
9591 | continue; | |
9592 | ||
9593 | if (current_subfile->symtab == NULL) | |
9594 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
9595 | cu->objfile); | |
9596 | fe->symtab = current_subfile->symtab; | |
9597 | } | |
9598 | } | |
c906108c SS |
9599 | } |
9600 | ||
9601 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
9602 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
9603 | or NULL if not known. COMP_DIR is the compilation directory for the |
9604 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
9605 | This routine tries to keep line numbers from identical absolute and |
9606 | relative file names in a common subfile. | |
9607 | ||
9608 | Using the `list' example from the GDB testsuite, which resides in | |
9609 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
9610 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
9611 | ||
c5aa993b JM |
9612 | DW_AT_name: /srcdir/list0.c |
9613 | DW_AT_comp_dir: /compdir | |
357e46e7 | 9614 | files.files[0].name: list0.h |
c5aa993b | 9615 | files.files[0].dir: /srcdir |
357e46e7 | 9616 | files.files[1].name: list0.c |
c5aa993b | 9617 | files.files[1].dir: /srcdir |
c906108c SS |
9618 | |
9619 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
9620 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
9621 | start_subfile will ensure that this happens provided that we pass the | |
9622 | concatenation of files.files[1].dir and files.files[1].name as the | |
9623 | subfile's name. */ | |
c906108c SS |
9624 | |
9625 | static void | |
4f1520fb | 9626 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 9627 | { |
4f1520fb FR |
9628 | char *fullname; |
9629 | ||
9630 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
9631 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
9632 | second argument to start_subfile. To be consistent, we do the | |
9633 | same here. In order not to lose the line information directory, | |
9634 | we concatenate it to the filename when it makes sense. | |
9635 | Note that the Dwarf3 standard says (speaking of filenames in line | |
9636 | information): ``The directory index is ignored for file names | |
9637 | that represent full path names''. Thus ignoring dirname in the | |
9638 | `else' branch below isn't an issue. */ | |
c906108c | 9639 | |
d5166ae1 | 9640 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
9641 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
9642 | else | |
9643 | fullname = filename; | |
c906108c | 9644 | |
4f1520fb FR |
9645 | start_subfile (fullname, comp_dir); |
9646 | ||
9647 | if (fullname != filename) | |
9648 | xfree (fullname); | |
c906108c SS |
9649 | } |
9650 | ||
4c2df51b DJ |
9651 | static void |
9652 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 9653 | struct dwarf2_cu *cu) |
4c2df51b | 9654 | { |
e7c27a73 DJ |
9655 | struct objfile *objfile = cu->objfile; |
9656 | struct comp_unit_head *cu_header = &cu->header; | |
9657 | ||
4c2df51b DJ |
9658 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
9659 | code here to turn a symbol with DW_AT_external and a | |
9660 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
9661 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
9662 | with some versions of binutils) where shared libraries could have | |
9663 | relocations against symbols in their debug information - the | |
9664 | minimal symbol would have the right address, but the debug info | |
9665 | would not. It's no longer necessary, because we will explicitly | |
9666 | apply relocations when we read in the debug information now. */ | |
9667 | ||
9668 | /* A DW_AT_location attribute with no contents indicates that a | |
9669 | variable has been optimized away. */ | |
9670 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
9671 | { | |
9672 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
9673 | return; | |
9674 | } | |
9675 | ||
9676 | /* Handle one degenerate form of location expression specially, to | |
9677 | preserve GDB's previous behavior when section offsets are | |
9678 | specified. If this is just a DW_OP_addr then mark this symbol | |
9679 | as LOC_STATIC. */ | |
9680 | ||
9681 | if (attr_form_is_block (attr) | |
9682 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
9683 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
9684 | { | |
891d2f0b | 9685 | unsigned int dummy; |
4c2df51b DJ |
9686 | |
9687 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 9688 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 9689 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
9690 | fixup_symbol_section (sym, objfile); |
9691 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
9692 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
9693 | return; |
9694 | } | |
9695 | ||
9696 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
9697 | expression evaluator, and use LOC_COMPUTED only when necessary | |
9698 | (i.e. when the value of a register or memory location is | |
9699 | referenced, or a thread-local block, etc.). Then again, it might | |
9700 | not be worthwhile. I'm assuming that it isn't unless performance | |
9701 | or memory numbers show me otherwise. */ | |
9702 | ||
e7c27a73 | 9703 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
9704 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
9705 | } | |
9706 | ||
c906108c SS |
9707 | /* Given a pointer to a DWARF information entry, figure out if we need |
9708 | to make a symbol table entry for it, and if so, create a new entry | |
9709 | and return a pointer to it. | |
9710 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 9711 | used the passed type. */ |
c906108c SS |
9712 | |
9713 | static struct symbol * | |
e7c27a73 | 9714 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 9715 | { |
e7c27a73 | 9716 | struct objfile *objfile = cu->objfile; |
c906108c SS |
9717 | struct symbol *sym = NULL; |
9718 | char *name; | |
9719 | struct attribute *attr = NULL; | |
9720 | struct attribute *attr2 = NULL; | |
e142c38c | 9721 | CORE_ADDR baseaddr; |
edb3359d | 9722 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
9723 | |
9724 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 9725 | |
94af9270 | 9726 | name = dwarf2_name (die, cu); |
c906108c SS |
9727 | if (name) |
9728 | { | |
94af9270 KS |
9729 | const char *linkagename; |
9730 | ||
4a146b47 | 9731 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
9732 | sizeof (struct symbol)); |
9733 | OBJSTAT (objfile, n_syms++); | |
9734 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
9735 | |
9736 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 9737 | SYMBOL_LANGUAGE (sym) = cu->language; |
94af9270 KS |
9738 | linkagename = dwarf2_physname (name, die, cu); |
9739 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 9740 | |
f55ee35c JK |
9741 | /* Fortran does not have mangling standard and the mangling does differ |
9742 | between gfortran, iFort etc. */ | |
9743 | if (cu->language == language_fortran | |
b250c185 | 9744 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d SW |
9745 | symbol_set_demangled_name (&(sym->ginfo), |
9746 | (char *) dwarf2_full_name (name, die, cu), | |
9747 | NULL); | |
f55ee35c | 9748 | |
c906108c | 9749 | /* Default assumptions. |
c5aa993b | 9750 | Use the passed type or decode it from the die. */ |
176620f1 | 9751 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 9752 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
9753 | if (type != NULL) |
9754 | SYMBOL_TYPE (sym) = type; | |
9755 | else | |
e7c27a73 | 9756 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
9757 | attr = dwarf2_attr (die, |
9758 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
9759 | cu); | |
c906108c SS |
9760 | if (attr) |
9761 | { | |
9762 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
9763 | } | |
cb1df416 | 9764 | |
edb3359d DJ |
9765 | attr = dwarf2_attr (die, |
9766 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
9767 | cu); | |
cb1df416 DJ |
9768 | if (attr) |
9769 | { | |
9770 | int file_index = DW_UNSND (attr); | |
9a619af0 | 9771 | |
cb1df416 DJ |
9772 | if (cu->line_header == NULL |
9773 | || file_index > cu->line_header->num_file_names) | |
9774 | complaint (&symfile_complaints, | |
9775 | _("file index out of range")); | |
1c3d648d | 9776 | else if (file_index > 0) |
cb1df416 DJ |
9777 | { |
9778 | struct file_entry *fe; | |
9a619af0 | 9779 | |
cb1df416 DJ |
9780 | fe = &cu->line_header->file_names[file_index - 1]; |
9781 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
9782 | } | |
9783 | } | |
9784 | ||
c906108c SS |
9785 | switch (die->tag) |
9786 | { | |
9787 | case DW_TAG_label: | |
e142c38c | 9788 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
9789 | if (attr) |
9790 | { | |
9791 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
9792 | } | |
0f5238ed TT |
9793 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
9794 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
c906108c | 9795 | SYMBOL_CLASS (sym) = LOC_LABEL; |
0f5238ed | 9796 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
9797 | break; |
9798 | case DW_TAG_subprogram: | |
9799 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
9800 | finish_block. */ | |
9801 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 9802 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
9803 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
9804 | || cu->language == language_ada) | |
c906108c | 9805 | { |
2cfa0c8d JB |
9806 | /* Subprograms marked external are stored as a global symbol. |
9807 | Ada subprograms, whether marked external or not, are always | |
9808 | stored as a global symbol, because we want to be able to | |
9809 | access them globally. For instance, we want to be able | |
9810 | to break on a nested subprogram without having to | |
9811 | specify the context. */ | |
c906108c SS |
9812 | add_symbol_to_list (sym, &global_symbols); |
9813 | } | |
9814 | else | |
9815 | { | |
e142c38c | 9816 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
9817 | } |
9818 | break; | |
edb3359d DJ |
9819 | case DW_TAG_inlined_subroutine: |
9820 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
9821 | finish_block. */ | |
9822 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
9823 | SYMBOL_INLINED (sym) = 1; | |
9824 | /* Do not add the symbol to any lists. It will be found via | |
9825 | BLOCK_FUNCTION from the blockvector. */ | |
9826 | break; | |
c906108c | 9827 | case DW_TAG_variable: |
254e6b9e | 9828 | case DW_TAG_member: |
c906108c SS |
9829 | /* Compilation with minimal debug info may result in variables |
9830 | with missing type entries. Change the misleading `void' type | |
9831 | to something sensible. */ | |
9832 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
64c50499 | 9833 | SYMBOL_TYPE (sym) |
46bf5051 | 9834 | = objfile_type (objfile)->nodebug_data_symbol; |
64c50499 | 9835 | |
e142c38c | 9836 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
9837 | /* In the case of DW_TAG_member, we should only be called for |
9838 | static const members. */ | |
9839 | if (die->tag == DW_TAG_member) | |
9840 | { | |
3863f96c DE |
9841 | /* dwarf2_add_field uses die_is_declaration, |
9842 | so we do the same. */ | |
254e6b9e DE |
9843 | gdb_assert (die_is_declaration (die, cu)); |
9844 | gdb_assert (attr); | |
9845 | } | |
c906108c SS |
9846 | if (attr) |
9847 | { | |
e7c27a73 | 9848 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 9849 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
9850 | if (attr2 && (DW_UNSND (attr2) != 0)) |
9851 | add_symbol_to_list (sym, &global_symbols); | |
9852 | else | |
e142c38c | 9853 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
9854 | break; |
9855 | } | |
e142c38c | 9856 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
9857 | if (attr) |
9858 | { | |
e7c27a73 | 9859 | var_decode_location (attr, sym, cu); |
e142c38c | 9860 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 9861 | if (attr2 && (DW_UNSND (attr2) != 0)) |
1c809c68 TT |
9862 | { |
9863 | struct pending **list_to_add; | |
9864 | ||
f55ee35c JK |
9865 | /* Workaround gfortran PR debug/40040 - it uses |
9866 | DW_AT_location for variables in -fPIC libraries which may | |
9867 | get overriden by other libraries/executable and get | |
9868 | a different address. Resolve it by the minimal symbol | |
9869 | which may come from inferior's executable using copy | |
9870 | relocation. Make this workaround only for gfortran as for | |
9871 | other compilers GDB cannot guess the minimal symbol | |
9872 | Fortran mangling kind. */ | |
9873 | if (cu->language == language_fortran && die->parent | |
9874 | && die->parent->tag == DW_TAG_module | |
9875 | && cu->producer | |
9876 | && strncmp (cu->producer, "GNU Fortran ", 12) == 0) | |
9877 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
9878 | ||
1c809c68 TT |
9879 | /* A variable with DW_AT_external is never static, |
9880 | but it may be block-scoped. */ | |
9881 | list_to_add = (cu->list_in_scope == &file_symbols | |
9882 | ? &global_symbols : cu->list_in_scope); | |
9883 | add_symbol_to_list (sym, list_to_add); | |
9884 | } | |
c906108c | 9885 | else |
e142c38c | 9886 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
9887 | } |
9888 | else | |
9889 | { | |
9890 | /* We do not know the address of this symbol. | |
c5aa993b JM |
9891 | If it is an external symbol and we have type information |
9892 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
9893 | The address of the variable will then be determined from | |
9894 | the minimal symbol table whenever the variable is | |
9895 | referenced. */ | |
e142c38c | 9896 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 9897 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 9898 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c | 9899 | { |
0fe7935b DJ |
9900 | struct pending **list_to_add; |
9901 | ||
9902 | /* A variable with DW_AT_external is never static, but it | |
9903 | may be block-scoped. */ | |
9904 | list_to_add = (cu->list_in_scope == &file_symbols | |
9905 | ? &global_symbols : cu->list_in_scope); | |
9906 | ||
c906108c | 9907 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; |
0fe7935b | 9908 | add_symbol_to_list (sym, list_to_add); |
c906108c | 9909 | } |
442ddf59 JK |
9910 | else if (!die_is_declaration (die, cu)) |
9911 | { | |
9912 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
9913 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
9914 | add_symbol_to_list (sym, cu->list_in_scope); | |
9915 | } | |
c906108c SS |
9916 | } |
9917 | break; | |
9918 | case DW_TAG_formal_parameter: | |
edb3359d DJ |
9919 | /* If we are inside a function, mark this as an argument. If |
9920 | not, we might be looking at an argument to an inlined function | |
9921 | when we do not have enough information to show inlined frames; | |
9922 | pretend it's a local variable in that case so that the user can | |
9923 | still see it. */ | |
9924 | if (context_stack_depth > 0 | |
9925 | && context_stack[context_stack_depth - 1].name != NULL) | |
9926 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
e142c38c | 9927 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
9928 | if (attr) |
9929 | { | |
e7c27a73 | 9930 | var_decode_location (attr, sym, cu); |
c906108c | 9931 | } |
e142c38c | 9932 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
9933 | if (attr) |
9934 | { | |
e7c27a73 | 9935 | dwarf2_const_value (attr, sym, cu); |
c906108c | 9936 | } |
f346a30d PM |
9937 | attr = dwarf2_attr (die, DW_AT_variable_parameter, cu); |
9938 | if (attr && DW_UNSND (attr)) | |
9939 | { | |
9940 | struct type *ref_type; | |
9941 | ||
9942 | ref_type = lookup_reference_type (SYMBOL_TYPE (sym)); | |
9943 | SYMBOL_TYPE (sym) = ref_type; | |
9944 | } | |
9945 | ||
e142c38c | 9946 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
9947 | break; |
9948 | case DW_TAG_unspecified_parameters: | |
9949 | /* From varargs functions; gdb doesn't seem to have any | |
9950 | interest in this information, so just ignore it for now. | |
9951 | (FIXME?) */ | |
9952 | break; | |
9953 | case DW_TAG_class_type: | |
680b30c7 | 9954 | case DW_TAG_interface_type: |
c906108c SS |
9955 | case DW_TAG_structure_type: |
9956 | case DW_TAG_union_type: | |
72019c9c | 9957 | case DW_TAG_set_type: |
c906108c SS |
9958 | case DW_TAG_enumeration_type: |
9959 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 9960 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 9961 | |
63d06c5c | 9962 | { |
987504bb | 9963 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
9964 | really ever be static objects: otherwise, if you try |
9965 | to, say, break of a class's method and you're in a file | |
9966 | which doesn't mention that class, it won't work unless | |
9967 | the check for all static symbols in lookup_symbol_aux | |
9968 | saves you. See the OtherFileClass tests in | |
9969 | gdb.c++/namespace.exp. */ | |
9970 | ||
9971 | struct pending **list_to_add; | |
9972 | ||
e142c38c | 9973 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
9974 | && (cu->language == language_cplus |
9975 | || cu->language == language_java) | |
e142c38c | 9976 | ? &global_symbols : cu->list_in_scope); |
6e70227d | 9977 | |
63d06c5c DC |
9978 | add_symbol_to_list (sym, list_to_add); |
9979 | ||
9980 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb | 9981 | defines a typedef for "foo". A Java class declaration also |
5eeb2539 | 9982 | defines a typedef for the class. */ |
987504bb | 9983 | if (cu->language == language_cplus |
8c6860bb JB |
9984 | || cu->language == language_java |
9985 | || cu->language == language_ada) | |
63d06c5c | 9986 | { |
d8151005 DJ |
9987 | /* The symbol's name is already allocated along with |
9988 | this objfile, so we don't need to duplicate it for | |
9989 | the type. */ | |
63d06c5c | 9990 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 9991 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
9992 | } |
9993 | } | |
c906108c SS |
9994 | break; |
9995 | case DW_TAG_typedef: | |
63d06c5c DC |
9996 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
9997 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 9998 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 9999 | break; |
c906108c | 10000 | case DW_TAG_base_type: |
a02abb62 | 10001 | case DW_TAG_subrange_type: |
c906108c | 10002 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 10003 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 10004 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
10005 | break; |
10006 | case DW_TAG_enumerator: | |
e142c38c | 10007 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
10008 | if (attr) |
10009 | { | |
e7c27a73 | 10010 | dwarf2_const_value (attr, sym, cu); |
c906108c | 10011 | } |
63d06c5c DC |
10012 | { |
10013 | /* NOTE: carlton/2003-11-10: See comment above in the | |
10014 | DW_TAG_class_type, etc. block. */ | |
10015 | ||
10016 | struct pending **list_to_add; | |
10017 | ||
e142c38c | 10018 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
10019 | && (cu->language == language_cplus |
10020 | || cu->language == language_java) | |
e142c38c | 10021 | ? &global_symbols : cu->list_in_scope); |
6e70227d | 10022 | |
63d06c5c DC |
10023 | add_symbol_to_list (sym, list_to_add); |
10024 | } | |
c906108c | 10025 | break; |
5c4e30ca DC |
10026 | case DW_TAG_namespace: |
10027 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
10028 | add_symbol_to_list (sym, &global_symbols); | |
10029 | break; | |
c906108c SS |
10030 | default: |
10031 | /* Not a tag we recognize. Hopefully we aren't processing | |
10032 | trash data, but since we must specifically ignore things | |
10033 | we don't recognize, there is nothing else we should do at | |
10034 | this point. */ | |
e2e0b3e5 | 10035 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 10036 | dwarf_tag_name (die->tag)); |
c906108c SS |
10037 | break; |
10038 | } | |
df8a16a1 DJ |
10039 | |
10040 | /* For the benefit of old versions of GCC, check for anonymous | |
10041 | namespaces based on the demangled name. */ | |
10042 | if (!processing_has_namespace_info | |
94af9270 | 10043 | && cu->language == language_cplus) |
df8a16a1 | 10044 | cp_scan_for_anonymous_namespaces (sym); |
c906108c SS |
10045 | } |
10046 | return (sym); | |
10047 | } | |
10048 | ||
10049 | /* Copy constant value from an attribute to a symbol. */ | |
10050 | ||
10051 | static void | |
107d2387 | 10052 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 10053 | struct dwarf2_cu *cu) |
c906108c | 10054 | { |
e7c27a73 DJ |
10055 | struct objfile *objfile = cu->objfile; |
10056 | struct comp_unit_head *cu_header = &cu->header; | |
e17a4113 UW |
10057 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
10058 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
c906108c SS |
10059 | struct dwarf_block *blk; |
10060 | ||
10061 | switch (attr->form) | |
10062 | { | |
10063 | case DW_FORM_addr: | |
ac56253d TT |
10064 | { |
10065 | struct dwarf2_locexpr_baton *baton; | |
10066 | gdb_byte *data; | |
10067 | ||
10068 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) | |
10069 | dwarf2_const_value_length_mismatch_complaint (SYMBOL_PRINT_NAME (sym), | |
10070 | cu_header->addr_size, | |
10071 | TYPE_LENGTH (SYMBOL_TYPE | |
10072 | (sym))); | |
10073 | /* Symbols of this form are reasonably rare, so we just | |
10074 | piggyback on the existing location code rather than writing | |
10075 | a new implementation of symbol_computed_ops. */ | |
10076 | baton = obstack_alloc (&objfile->objfile_obstack, | |
10077 | sizeof (struct dwarf2_locexpr_baton)); | |
10078 | baton->per_cu = cu->per_cu; | |
10079 | gdb_assert (baton->per_cu); | |
10080 | ||
10081 | baton->size = 2 + cu_header->addr_size; | |
10082 | data = obstack_alloc (&objfile->objfile_obstack, baton->size); | |
10083 | baton->data = data; | |
10084 | ||
10085 | data[0] = DW_OP_addr; | |
10086 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
10087 | byte_order, DW_ADDR (attr)); | |
10088 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
10089 | ||
10090 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; | |
10091 | SYMBOL_LOCATION_BATON (sym) = baton; | |
10092 | SYMBOL_CLASS (sym) = LOC_COMPUTED; | |
10093 | } | |
c906108c | 10094 | break; |
4ac36638 | 10095 | case DW_FORM_string: |
93b5768b PA |
10096 | case DW_FORM_strp: |
10097 | /* DW_STRING is already allocated on the obstack, point directly | |
10098 | to it. */ | |
10099 | SYMBOL_VALUE_BYTES (sym) = (gdb_byte *) DW_STRING (attr); | |
10100 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
10101 | break; | |
c906108c SS |
10102 | case DW_FORM_block1: |
10103 | case DW_FORM_block2: | |
10104 | case DW_FORM_block4: | |
10105 | case DW_FORM_block: | |
2dc7f7b3 | 10106 | case DW_FORM_exprloc: |
c906108c SS |
10107 | blk = DW_BLOCK (attr); |
10108 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
3567439c | 10109 | dwarf2_const_value_length_mismatch_complaint (SYMBOL_PRINT_NAME (sym), |
4d3c2250 KB |
10110 | blk->size, |
10111 | TYPE_LENGTH (SYMBOL_TYPE | |
10112 | (sym))); | |
4e38b386 | 10113 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 10114 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
10115 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
10116 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
10117 | break; | |
2df3850c JM |
10118 | |
10119 | /* The DW_AT_const_value attributes are supposed to carry the | |
10120 | symbol's value "represented as it would be on the target | |
10121 | architecture." By the time we get here, it's already been | |
10122 | converted to host endianness, so we just need to sign- or | |
10123 | zero-extend it as appropriate. */ | |
10124 | case DW_FORM_data1: | |
10125 | dwarf2_const_value_data (attr, sym, 8); | |
10126 | break; | |
c906108c | 10127 | case DW_FORM_data2: |
2df3850c JM |
10128 | dwarf2_const_value_data (attr, sym, 16); |
10129 | break; | |
c906108c | 10130 | case DW_FORM_data4: |
2df3850c JM |
10131 | dwarf2_const_value_data (attr, sym, 32); |
10132 | break; | |
c906108c | 10133 | case DW_FORM_data8: |
2df3850c JM |
10134 | dwarf2_const_value_data (attr, sym, 64); |
10135 | break; | |
10136 | ||
c906108c | 10137 | case DW_FORM_sdata: |
2df3850c JM |
10138 | SYMBOL_VALUE (sym) = DW_SND (attr); |
10139 | SYMBOL_CLASS (sym) = LOC_CONST; | |
10140 | break; | |
10141 | ||
c906108c SS |
10142 | case DW_FORM_udata: |
10143 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
10144 | SYMBOL_CLASS (sym) = LOC_CONST; | |
10145 | break; | |
2df3850c | 10146 | |
c906108c | 10147 | default: |
4d3c2250 | 10148 | complaint (&symfile_complaints, |
e2e0b3e5 | 10149 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 10150 | dwarf_form_name (attr->form)); |
c906108c SS |
10151 | SYMBOL_VALUE (sym) = 0; |
10152 | SYMBOL_CLASS (sym) = LOC_CONST; | |
10153 | break; | |
10154 | } | |
10155 | } | |
10156 | ||
2df3850c JM |
10157 | |
10158 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
10159 | or zero-extend it as appropriate for the symbol's type. */ | |
10160 | static void | |
10161 | dwarf2_const_value_data (struct attribute *attr, | |
10162 | struct symbol *sym, | |
10163 | int bits) | |
10164 | { | |
10165 | LONGEST l = DW_UNSND (attr); | |
10166 | ||
10167 | if (bits < sizeof (l) * 8) | |
10168 | { | |
10169 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
10170 | l &= ((LONGEST) 1 << bits) - 1; | |
10171 | else | |
bf9198f1 | 10172 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
10173 | } |
10174 | ||
10175 | SYMBOL_VALUE (sym) = l; | |
10176 | SYMBOL_CLASS (sym) = LOC_CONST; | |
10177 | } | |
10178 | ||
10179 | ||
c906108c SS |
10180 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
10181 | ||
10182 | static struct type * | |
e7c27a73 | 10183 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10184 | { |
c906108c SS |
10185 | struct attribute *type_attr; |
10186 | struct die_info *type_die; | |
c906108c | 10187 | |
e142c38c | 10188 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
10189 | if (!type_attr) |
10190 | { | |
10191 | /* A missing DW_AT_type represents a void type. */ | |
46bf5051 | 10192 | return objfile_type (cu->objfile)->builtin_void; |
c906108c | 10193 | } |
348e048f DE |
10194 | |
10195 | type_die = follow_die_ref_or_sig (die, type_attr, &cu); | |
10b3939b | 10196 | |
33ac96f0 | 10197 | return tag_type_to_type (type_die, cu); |
c906108c SS |
10198 | } |
10199 | ||
b4ba55a1 JB |
10200 | /* True iff CU's producer generates GNAT Ada auxiliary information |
10201 | that allows to find parallel types through that information instead | |
10202 | of having to do expensive parallel lookups by type name. */ | |
10203 | ||
10204 | static int | |
10205 | need_gnat_info (struct dwarf2_cu *cu) | |
10206 | { | |
10207 | /* FIXME: brobecker/2010-10-12: As of now, only the AdaCore version | |
10208 | of GNAT produces this auxiliary information, without any indication | |
10209 | that it is produced. Part of enhancing the FSF version of GNAT | |
10210 | to produce that information will be to put in place an indicator | |
10211 | that we can use in order to determine whether the descriptive type | |
10212 | info is available or not. One suggestion that has been made is | |
10213 | to use a new attribute, attached to the CU die. For now, assume | |
10214 | that the descriptive type info is not available. */ | |
10215 | return 0; | |
10216 | } | |
10217 | ||
10218 | ||
10219 | /* Return the auxiliary type of the die in question using its | |
10220 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
10221 | attribute is not present. */ | |
10222 | ||
10223 | static struct type * | |
10224 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
10225 | { | |
b4ba55a1 JB |
10226 | struct attribute *type_attr; |
10227 | struct die_info *type_die; | |
10228 | ||
10229 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
10230 | if (!type_attr) | |
10231 | return NULL; | |
10232 | ||
10233 | type_die = follow_die_ref (die, type_attr, &cu); | |
33ac96f0 | 10234 | return tag_type_to_type (type_die, cu); |
b4ba55a1 JB |
10235 | } |
10236 | ||
10237 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
10238 | descriptive type accordingly. */ | |
10239 | ||
10240 | static void | |
10241 | set_descriptive_type (struct type *type, struct die_info *die, | |
10242 | struct dwarf2_cu *cu) | |
10243 | { | |
10244 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
10245 | ||
10246 | if (descriptive_type) | |
10247 | { | |
10248 | ALLOCATE_GNAT_AUX_TYPE (type); | |
10249 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
10250 | } | |
10251 | } | |
10252 | ||
c906108c SS |
10253 | /* Return the containing type of the die in question using its |
10254 | DW_AT_containing_type attribute. */ | |
10255 | ||
10256 | static struct type * | |
e7c27a73 | 10257 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10258 | { |
c906108c | 10259 | struct attribute *type_attr; |
33ac96f0 | 10260 | struct die_info *type_die; |
c906108c | 10261 | |
e142c38c | 10262 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
10263 | if (!type_attr) |
10264 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
10265 | "[in module %s]"), cu->objfile->name); | |
10266 | ||
10267 | type_die = follow_die_ref_or_sig (die, type_attr, &cu); | |
10268 | return tag_type_to_type (type_die, cu); | |
c906108c SS |
10269 | } |
10270 | ||
c906108c | 10271 | static struct type * |
e7c27a73 | 10272 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10273 | { |
f792889a DJ |
10274 | struct type *this_type; |
10275 | ||
10276 | this_type = read_type_die (die, cu); | |
10277 | if (!this_type) | |
c906108c | 10278 | { |
b00fdb78 TT |
10279 | char *message, *saved; |
10280 | ||
10281 | /* read_type_die already issued a complaint. */ | |
10282 | message = xstrprintf (_("<unknown type in %s, CU 0x%x, DIE 0x%x>"), | |
10283 | cu->objfile->name, | |
10284 | cu->header.offset, | |
10285 | die->offset); | |
10286 | saved = obstack_copy0 (&cu->objfile->objfile_obstack, | |
10287 | message, strlen (message)); | |
10288 | xfree (message); | |
10289 | ||
10290 | this_type = init_type (TYPE_CODE_ERROR, 0, 0, saved, cu->objfile); | |
c906108c | 10291 | } |
f792889a | 10292 | return this_type; |
c906108c SS |
10293 | } |
10294 | ||
f792889a | 10295 | static struct type * |
e7c27a73 | 10296 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10297 | { |
f792889a DJ |
10298 | struct type *this_type; |
10299 | ||
10300 | this_type = get_die_type (die, cu); | |
10301 | if (this_type) | |
10302 | return this_type; | |
10303 | ||
c906108c SS |
10304 | switch (die->tag) |
10305 | { | |
10306 | case DW_TAG_class_type: | |
680b30c7 | 10307 | case DW_TAG_interface_type: |
c906108c SS |
10308 | case DW_TAG_structure_type: |
10309 | case DW_TAG_union_type: | |
f792889a | 10310 | this_type = read_structure_type (die, cu); |
c906108c SS |
10311 | break; |
10312 | case DW_TAG_enumeration_type: | |
f792889a | 10313 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
10314 | break; |
10315 | case DW_TAG_subprogram: | |
10316 | case DW_TAG_subroutine_type: | |
edb3359d | 10317 | case DW_TAG_inlined_subroutine: |
f792889a | 10318 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
10319 | break; |
10320 | case DW_TAG_array_type: | |
f792889a | 10321 | this_type = read_array_type (die, cu); |
c906108c | 10322 | break; |
72019c9c | 10323 | case DW_TAG_set_type: |
f792889a | 10324 | this_type = read_set_type (die, cu); |
72019c9c | 10325 | break; |
c906108c | 10326 | case DW_TAG_pointer_type: |
f792889a | 10327 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
10328 | break; |
10329 | case DW_TAG_ptr_to_member_type: | |
f792889a | 10330 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
10331 | break; |
10332 | case DW_TAG_reference_type: | |
f792889a | 10333 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
10334 | break; |
10335 | case DW_TAG_const_type: | |
f792889a | 10336 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
10337 | break; |
10338 | case DW_TAG_volatile_type: | |
f792889a | 10339 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
10340 | break; |
10341 | case DW_TAG_string_type: | |
f792889a | 10342 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
10343 | break; |
10344 | case DW_TAG_typedef: | |
f792889a | 10345 | this_type = read_typedef (die, cu); |
c906108c | 10346 | break; |
a02abb62 | 10347 | case DW_TAG_subrange_type: |
f792889a | 10348 | this_type = read_subrange_type (die, cu); |
a02abb62 | 10349 | break; |
c906108c | 10350 | case DW_TAG_base_type: |
f792889a | 10351 | this_type = read_base_type (die, cu); |
c906108c | 10352 | break; |
81a17f79 | 10353 | case DW_TAG_unspecified_type: |
f792889a | 10354 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 10355 | break; |
0114d602 DJ |
10356 | case DW_TAG_namespace: |
10357 | this_type = read_namespace_type (die, cu); | |
10358 | break; | |
f55ee35c JK |
10359 | case DW_TAG_module: |
10360 | this_type = read_module_type (die, cu); | |
10361 | break; | |
c906108c | 10362 | default: |
a1f5b845 | 10363 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 10364 | dwarf_tag_name (die->tag)); |
c906108c SS |
10365 | break; |
10366 | } | |
63d06c5c | 10367 | |
f792889a | 10368 | return this_type; |
63d06c5c DC |
10369 | } |
10370 | ||
fdde2d81 | 10371 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 10372 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 10373 | |
0114d602 DJ |
10374 | For example, if we're within the method foo() in the following |
10375 | code: | |
10376 | ||
10377 | namespace N { | |
10378 | class C { | |
10379 | void foo () { | |
10380 | } | |
10381 | }; | |
10382 | } | |
10383 | ||
10384 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
10385 | |
10386 | static char * | |
e142c38c | 10387 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 10388 | { |
0114d602 DJ |
10389 | struct die_info *parent, *spec_die; |
10390 | struct dwarf2_cu *spec_cu; | |
10391 | struct type *parent_type; | |
63d06c5c | 10392 | |
f55ee35c JK |
10393 | if (cu->language != language_cplus && cu->language != language_java |
10394 | && cu->language != language_fortran) | |
0114d602 DJ |
10395 | return ""; |
10396 | ||
10397 | /* We have to be careful in the presence of DW_AT_specification. | |
10398 | For example, with GCC 3.4, given the code | |
10399 | ||
10400 | namespace N { | |
10401 | void foo() { | |
10402 | // Definition of N::foo. | |
10403 | } | |
10404 | } | |
10405 | ||
10406 | then we'll have a tree of DIEs like this: | |
10407 | ||
10408 | 1: DW_TAG_compile_unit | |
10409 | 2: DW_TAG_namespace // N | |
10410 | 3: DW_TAG_subprogram // declaration of N::foo | |
10411 | 4: DW_TAG_subprogram // definition of N::foo | |
10412 | DW_AT_specification // refers to die #3 | |
10413 | ||
10414 | Thus, when processing die #4, we have to pretend that we're in | |
10415 | the context of its DW_AT_specification, namely the contex of die | |
10416 | #3. */ | |
10417 | spec_cu = cu; | |
10418 | spec_die = die_specification (die, &spec_cu); | |
10419 | if (spec_die == NULL) | |
10420 | parent = die->parent; | |
10421 | else | |
63d06c5c | 10422 | { |
0114d602 DJ |
10423 | parent = spec_die->parent; |
10424 | cu = spec_cu; | |
63d06c5c | 10425 | } |
0114d602 DJ |
10426 | |
10427 | if (parent == NULL) | |
10428 | return ""; | |
63d06c5c | 10429 | else |
0114d602 DJ |
10430 | switch (parent->tag) |
10431 | { | |
63d06c5c | 10432 | case DW_TAG_namespace: |
0114d602 | 10433 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
10434 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
10435 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
10436 | Work around this problem here. */ | |
10437 | if (cu->language == language_cplus | |
10438 | && strcmp (TYPE_TAG_NAME (parent_type), "::") == 0) | |
10439 | return ""; | |
0114d602 DJ |
10440 | /* We give a name to even anonymous namespaces. */ |
10441 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 10442 | case DW_TAG_class_type: |
680b30c7 | 10443 | case DW_TAG_interface_type: |
63d06c5c | 10444 | case DW_TAG_structure_type: |
0114d602 | 10445 | case DW_TAG_union_type: |
f55ee35c | 10446 | case DW_TAG_module: |
0114d602 DJ |
10447 | parent_type = read_type_die (parent, cu); |
10448 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
10449 | return TYPE_TAG_NAME (parent_type); | |
10450 | else | |
10451 | /* An anonymous structure is only allowed non-static data | |
10452 | members; no typedefs, no member functions, et cetera. | |
10453 | So it does not need a prefix. */ | |
10454 | return ""; | |
63d06c5c | 10455 | default: |
8176b9b8 | 10456 | return determine_prefix (parent, cu); |
63d06c5c | 10457 | } |
63d06c5c DC |
10458 | } |
10459 | ||
987504bb JJ |
10460 | /* Return a newly-allocated string formed by concatenating PREFIX and |
10461 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
10462 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
10463 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
10464 | is used to determine the language and hence, the appropriate separator. */ | |
10465 | ||
f55ee35c | 10466 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
10467 | |
10468 | static char * | |
f55ee35c JK |
10469 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
10470 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 10471 | { |
f55ee35c | 10472 | const char *lead = ""; |
5c315b68 | 10473 | const char *sep; |
63d06c5c | 10474 | |
987504bb JJ |
10475 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
10476 | sep = ""; | |
10477 | else if (cu->language == language_java) | |
10478 | sep = "."; | |
f55ee35c JK |
10479 | else if (cu->language == language_fortran && physname) |
10480 | { | |
10481 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
10482 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
10483 | ||
10484 | lead = "__"; | |
10485 | sep = "_MOD_"; | |
10486 | } | |
987504bb JJ |
10487 | else |
10488 | sep = "::"; | |
63d06c5c | 10489 | |
6dd47d34 DE |
10490 | if (prefix == NULL) |
10491 | prefix = ""; | |
10492 | if (suffix == NULL) | |
10493 | suffix = ""; | |
10494 | ||
987504bb JJ |
10495 | if (obs == NULL) |
10496 | { | |
10497 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
9a619af0 | 10498 | |
f55ee35c JK |
10499 | strcpy (retval, lead); |
10500 | strcat (retval, prefix); | |
6dd47d34 DE |
10501 | strcat (retval, sep); |
10502 | strcat (retval, suffix); | |
63d06c5c DC |
10503 | return retval; |
10504 | } | |
987504bb JJ |
10505 | else |
10506 | { | |
10507 | /* We have an obstack. */ | |
f55ee35c | 10508 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 10509 | } |
63d06c5c DC |
10510 | } |
10511 | ||
c906108c SS |
10512 | /* Return sibling of die, NULL if no sibling. */ |
10513 | ||
f9aca02d | 10514 | static struct die_info * |
fba45db2 | 10515 | sibling_die (struct die_info *die) |
c906108c | 10516 | { |
639d11d3 | 10517 | return die->sibling; |
c906108c SS |
10518 | } |
10519 | ||
71c25dea TT |
10520 | /* Get name of a die, return NULL if not found. */ |
10521 | ||
10522 | static char * | |
10523 | dwarf2_canonicalize_name (char *name, struct dwarf2_cu *cu, | |
10524 | struct obstack *obstack) | |
10525 | { | |
10526 | if (name && cu->language == language_cplus) | |
10527 | { | |
10528 | char *canon_name = cp_canonicalize_string (name); | |
10529 | ||
10530 | if (canon_name != NULL) | |
10531 | { | |
10532 | if (strcmp (canon_name, name) != 0) | |
10533 | name = obsavestring (canon_name, strlen (canon_name), | |
10534 | obstack); | |
10535 | xfree (canon_name); | |
10536 | } | |
10537 | } | |
10538 | ||
10539 | return name; | |
c906108c SS |
10540 | } |
10541 | ||
9219021c DC |
10542 | /* Get name of a die, return NULL if not found. */ |
10543 | ||
10544 | static char * | |
e142c38c | 10545 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
10546 | { |
10547 | struct attribute *attr; | |
10548 | ||
e142c38c | 10549 | attr = dwarf2_attr (die, DW_AT_name, cu); |
71c25dea TT |
10550 | if (!attr || !DW_STRING (attr)) |
10551 | return NULL; | |
10552 | ||
10553 | switch (die->tag) | |
10554 | { | |
10555 | case DW_TAG_compile_unit: | |
10556 | /* Compilation units have a DW_AT_name that is a filename, not | |
10557 | a source language identifier. */ | |
10558 | case DW_TAG_enumeration_type: | |
10559 | case DW_TAG_enumerator: | |
10560 | /* These tags always have simple identifiers already; no need | |
10561 | to canonicalize them. */ | |
10562 | return DW_STRING (attr); | |
907af001 | 10563 | |
418835cc KS |
10564 | case DW_TAG_subprogram: |
10565 | /* Java constructors will all be named "<init>", so return | |
10566 | the class name when we see this special case. */ | |
10567 | if (cu->language == language_java | |
10568 | && DW_STRING (attr) != NULL | |
10569 | && strcmp (DW_STRING (attr), "<init>") == 0) | |
10570 | { | |
10571 | struct dwarf2_cu *spec_cu = cu; | |
10572 | struct die_info *spec_die; | |
10573 | ||
10574 | /* GCJ will output '<init>' for Java constructor names. | |
10575 | For this special case, return the name of the parent class. */ | |
10576 | ||
10577 | /* GCJ may output suprogram DIEs with AT_specification set. | |
10578 | If so, use the name of the specified DIE. */ | |
10579 | spec_die = die_specification (die, &spec_cu); | |
10580 | if (spec_die != NULL) | |
10581 | return dwarf2_name (spec_die, spec_cu); | |
10582 | ||
10583 | do | |
10584 | { | |
10585 | die = die->parent; | |
10586 | if (die->tag == DW_TAG_class_type) | |
10587 | return dwarf2_name (die, cu); | |
10588 | } | |
10589 | while (die->tag != DW_TAG_compile_unit); | |
10590 | } | |
907af001 UW |
10591 | break; |
10592 | ||
10593 | case DW_TAG_class_type: | |
10594 | case DW_TAG_interface_type: | |
10595 | case DW_TAG_structure_type: | |
10596 | case DW_TAG_union_type: | |
10597 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
10598 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
10599 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
10600 | and GCC 4.4. We work around this problem by ignoring these. */ | |
10601 | if (strncmp (DW_STRING (attr), "._", 2) == 0 | |
10602 | || strncmp (DW_STRING (attr), "<anonymous", 10) == 0) | |
10603 | return NULL; | |
10604 | break; | |
10605 | ||
71c25dea | 10606 | default: |
907af001 UW |
10607 | break; |
10608 | } | |
10609 | ||
10610 | if (!DW_STRING_IS_CANONICAL (attr)) | |
10611 | { | |
10612 | DW_STRING (attr) | |
10613 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
10614 | &cu->objfile->objfile_obstack); | |
10615 | DW_STRING_IS_CANONICAL (attr) = 1; | |
71c25dea | 10616 | } |
907af001 | 10617 | return DW_STRING (attr); |
9219021c DC |
10618 | } |
10619 | ||
10620 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
10621 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
10622 | containing the return value on output. */ | |
9219021c DC |
10623 | |
10624 | static struct die_info * | |
f2f0e013 | 10625 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
10626 | { |
10627 | struct attribute *attr; | |
9219021c | 10628 | |
f2f0e013 | 10629 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
10630 | if (attr == NULL) |
10631 | return NULL; | |
10632 | ||
f2f0e013 | 10633 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
10634 | } |
10635 | ||
c906108c SS |
10636 | /* Convert a DIE tag into its string name. */ |
10637 | ||
10638 | static char * | |
aa1ee363 | 10639 | dwarf_tag_name (unsigned tag) |
c906108c SS |
10640 | { |
10641 | switch (tag) | |
10642 | { | |
10643 | case DW_TAG_padding: | |
10644 | return "DW_TAG_padding"; | |
10645 | case DW_TAG_array_type: | |
10646 | return "DW_TAG_array_type"; | |
10647 | case DW_TAG_class_type: | |
10648 | return "DW_TAG_class_type"; | |
10649 | case DW_TAG_entry_point: | |
10650 | return "DW_TAG_entry_point"; | |
10651 | case DW_TAG_enumeration_type: | |
10652 | return "DW_TAG_enumeration_type"; | |
10653 | case DW_TAG_formal_parameter: | |
10654 | return "DW_TAG_formal_parameter"; | |
10655 | case DW_TAG_imported_declaration: | |
10656 | return "DW_TAG_imported_declaration"; | |
10657 | case DW_TAG_label: | |
10658 | return "DW_TAG_label"; | |
10659 | case DW_TAG_lexical_block: | |
10660 | return "DW_TAG_lexical_block"; | |
10661 | case DW_TAG_member: | |
10662 | return "DW_TAG_member"; | |
10663 | case DW_TAG_pointer_type: | |
10664 | return "DW_TAG_pointer_type"; | |
10665 | case DW_TAG_reference_type: | |
10666 | return "DW_TAG_reference_type"; | |
10667 | case DW_TAG_compile_unit: | |
10668 | return "DW_TAG_compile_unit"; | |
10669 | case DW_TAG_string_type: | |
10670 | return "DW_TAG_string_type"; | |
10671 | case DW_TAG_structure_type: | |
10672 | return "DW_TAG_structure_type"; | |
10673 | case DW_TAG_subroutine_type: | |
10674 | return "DW_TAG_subroutine_type"; | |
10675 | case DW_TAG_typedef: | |
10676 | return "DW_TAG_typedef"; | |
10677 | case DW_TAG_union_type: | |
10678 | return "DW_TAG_union_type"; | |
10679 | case DW_TAG_unspecified_parameters: | |
10680 | return "DW_TAG_unspecified_parameters"; | |
10681 | case DW_TAG_variant: | |
10682 | return "DW_TAG_variant"; | |
10683 | case DW_TAG_common_block: | |
10684 | return "DW_TAG_common_block"; | |
10685 | case DW_TAG_common_inclusion: | |
10686 | return "DW_TAG_common_inclusion"; | |
10687 | case DW_TAG_inheritance: | |
10688 | return "DW_TAG_inheritance"; | |
10689 | case DW_TAG_inlined_subroutine: | |
10690 | return "DW_TAG_inlined_subroutine"; | |
10691 | case DW_TAG_module: | |
10692 | return "DW_TAG_module"; | |
10693 | case DW_TAG_ptr_to_member_type: | |
10694 | return "DW_TAG_ptr_to_member_type"; | |
10695 | case DW_TAG_set_type: | |
10696 | return "DW_TAG_set_type"; | |
10697 | case DW_TAG_subrange_type: | |
10698 | return "DW_TAG_subrange_type"; | |
10699 | case DW_TAG_with_stmt: | |
10700 | return "DW_TAG_with_stmt"; | |
10701 | case DW_TAG_access_declaration: | |
10702 | return "DW_TAG_access_declaration"; | |
10703 | case DW_TAG_base_type: | |
10704 | return "DW_TAG_base_type"; | |
10705 | case DW_TAG_catch_block: | |
10706 | return "DW_TAG_catch_block"; | |
10707 | case DW_TAG_const_type: | |
10708 | return "DW_TAG_const_type"; | |
10709 | case DW_TAG_constant: | |
10710 | return "DW_TAG_constant"; | |
10711 | case DW_TAG_enumerator: | |
10712 | return "DW_TAG_enumerator"; | |
10713 | case DW_TAG_file_type: | |
10714 | return "DW_TAG_file_type"; | |
10715 | case DW_TAG_friend: | |
10716 | return "DW_TAG_friend"; | |
10717 | case DW_TAG_namelist: | |
10718 | return "DW_TAG_namelist"; | |
10719 | case DW_TAG_namelist_item: | |
10720 | return "DW_TAG_namelist_item"; | |
10721 | case DW_TAG_packed_type: | |
10722 | return "DW_TAG_packed_type"; | |
10723 | case DW_TAG_subprogram: | |
10724 | return "DW_TAG_subprogram"; | |
10725 | case DW_TAG_template_type_param: | |
10726 | return "DW_TAG_template_type_param"; | |
10727 | case DW_TAG_template_value_param: | |
10728 | return "DW_TAG_template_value_param"; | |
10729 | case DW_TAG_thrown_type: | |
10730 | return "DW_TAG_thrown_type"; | |
10731 | case DW_TAG_try_block: | |
10732 | return "DW_TAG_try_block"; | |
10733 | case DW_TAG_variant_part: | |
10734 | return "DW_TAG_variant_part"; | |
10735 | case DW_TAG_variable: | |
10736 | return "DW_TAG_variable"; | |
10737 | case DW_TAG_volatile_type: | |
10738 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
10739 | case DW_TAG_dwarf_procedure: |
10740 | return "DW_TAG_dwarf_procedure"; | |
10741 | case DW_TAG_restrict_type: | |
10742 | return "DW_TAG_restrict_type"; | |
10743 | case DW_TAG_interface_type: | |
10744 | return "DW_TAG_interface_type"; | |
10745 | case DW_TAG_namespace: | |
10746 | return "DW_TAG_namespace"; | |
10747 | case DW_TAG_imported_module: | |
10748 | return "DW_TAG_imported_module"; | |
10749 | case DW_TAG_unspecified_type: | |
10750 | return "DW_TAG_unspecified_type"; | |
10751 | case DW_TAG_partial_unit: | |
10752 | return "DW_TAG_partial_unit"; | |
10753 | case DW_TAG_imported_unit: | |
10754 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
10755 | case DW_TAG_condition: |
10756 | return "DW_TAG_condition"; | |
10757 | case DW_TAG_shared_type: | |
10758 | return "DW_TAG_shared_type"; | |
348e048f DE |
10759 | case DW_TAG_type_unit: |
10760 | return "DW_TAG_type_unit"; | |
c906108c SS |
10761 | case DW_TAG_MIPS_loop: |
10762 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
10763 | case DW_TAG_HP_array_descriptor: |
10764 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
10765 | case DW_TAG_format_label: |
10766 | return "DW_TAG_format_label"; | |
10767 | case DW_TAG_function_template: | |
10768 | return "DW_TAG_function_template"; | |
10769 | case DW_TAG_class_template: | |
10770 | return "DW_TAG_class_template"; | |
b7619582 GF |
10771 | case DW_TAG_GNU_BINCL: |
10772 | return "DW_TAG_GNU_BINCL"; | |
10773 | case DW_TAG_GNU_EINCL: | |
10774 | return "DW_TAG_GNU_EINCL"; | |
10775 | case DW_TAG_upc_shared_type: | |
10776 | return "DW_TAG_upc_shared_type"; | |
10777 | case DW_TAG_upc_strict_type: | |
10778 | return "DW_TAG_upc_strict_type"; | |
10779 | case DW_TAG_upc_relaxed_type: | |
10780 | return "DW_TAG_upc_relaxed_type"; | |
10781 | case DW_TAG_PGI_kanji_type: | |
10782 | return "DW_TAG_PGI_kanji_type"; | |
10783 | case DW_TAG_PGI_interface_block: | |
10784 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
10785 | default: |
10786 | return "DW_TAG_<unknown>"; | |
10787 | } | |
10788 | } | |
10789 | ||
10790 | /* Convert a DWARF attribute code into its string name. */ | |
10791 | ||
10792 | static char * | |
aa1ee363 | 10793 | dwarf_attr_name (unsigned attr) |
c906108c SS |
10794 | { |
10795 | switch (attr) | |
10796 | { | |
10797 | case DW_AT_sibling: | |
10798 | return "DW_AT_sibling"; | |
10799 | case DW_AT_location: | |
10800 | return "DW_AT_location"; | |
10801 | case DW_AT_name: | |
10802 | return "DW_AT_name"; | |
10803 | case DW_AT_ordering: | |
10804 | return "DW_AT_ordering"; | |
10805 | case DW_AT_subscr_data: | |
10806 | return "DW_AT_subscr_data"; | |
10807 | case DW_AT_byte_size: | |
10808 | return "DW_AT_byte_size"; | |
10809 | case DW_AT_bit_offset: | |
10810 | return "DW_AT_bit_offset"; | |
10811 | case DW_AT_bit_size: | |
10812 | return "DW_AT_bit_size"; | |
10813 | case DW_AT_element_list: | |
10814 | return "DW_AT_element_list"; | |
10815 | case DW_AT_stmt_list: | |
10816 | return "DW_AT_stmt_list"; | |
10817 | case DW_AT_low_pc: | |
10818 | return "DW_AT_low_pc"; | |
10819 | case DW_AT_high_pc: | |
10820 | return "DW_AT_high_pc"; | |
10821 | case DW_AT_language: | |
10822 | return "DW_AT_language"; | |
10823 | case DW_AT_member: | |
10824 | return "DW_AT_member"; | |
10825 | case DW_AT_discr: | |
10826 | return "DW_AT_discr"; | |
10827 | case DW_AT_discr_value: | |
10828 | return "DW_AT_discr_value"; | |
10829 | case DW_AT_visibility: | |
10830 | return "DW_AT_visibility"; | |
10831 | case DW_AT_import: | |
10832 | return "DW_AT_import"; | |
10833 | case DW_AT_string_length: | |
10834 | return "DW_AT_string_length"; | |
10835 | case DW_AT_common_reference: | |
10836 | return "DW_AT_common_reference"; | |
10837 | case DW_AT_comp_dir: | |
10838 | return "DW_AT_comp_dir"; | |
10839 | case DW_AT_const_value: | |
10840 | return "DW_AT_const_value"; | |
10841 | case DW_AT_containing_type: | |
10842 | return "DW_AT_containing_type"; | |
10843 | case DW_AT_default_value: | |
10844 | return "DW_AT_default_value"; | |
10845 | case DW_AT_inline: | |
10846 | return "DW_AT_inline"; | |
10847 | case DW_AT_is_optional: | |
10848 | return "DW_AT_is_optional"; | |
10849 | case DW_AT_lower_bound: | |
10850 | return "DW_AT_lower_bound"; | |
10851 | case DW_AT_producer: | |
10852 | return "DW_AT_producer"; | |
10853 | case DW_AT_prototyped: | |
10854 | return "DW_AT_prototyped"; | |
10855 | case DW_AT_return_addr: | |
10856 | return "DW_AT_return_addr"; | |
10857 | case DW_AT_start_scope: | |
10858 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
10859 | case DW_AT_bit_stride: |
10860 | return "DW_AT_bit_stride"; | |
c906108c SS |
10861 | case DW_AT_upper_bound: |
10862 | return "DW_AT_upper_bound"; | |
10863 | case DW_AT_abstract_origin: | |
10864 | return "DW_AT_abstract_origin"; | |
10865 | case DW_AT_accessibility: | |
10866 | return "DW_AT_accessibility"; | |
10867 | case DW_AT_address_class: | |
10868 | return "DW_AT_address_class"; | |
10869 | case DW_AT_artificial: | |
10870 | return "DW_AT_artificial"; | |
10871 | case DW_AT_base_types: | |
10872 | return "DW_AT_base_types"; | |
10873 | case DW_AT_calling_convention: | |
10874 | return "DW_AT_calling_convention"; | |
10875 | case DW_AT_count: | |
10876 | return "DW_AT_count"; | |
10877 | case DW_AT_data_member_location: | |
10878 | return "DW_AT_data_member_location"; | |
10879 | case DW_AT_decl_column: | |
10880 | return "DW_AT_decl_column"; | |
10881 | case DW_AT_decl_file: | |
10882 | return "DW_AT_decl_file"; | |
10883 | case DW_AT_decl_line: | |
10884 | return "DW_AT_decl_line"; | |
10885 | case DW_AT_declaration: | |
10886 | return "DW_AT_declaration"; | |
10887 | case DW_AT_discr_list: | |
10888 | return "DW_AT_discr_list"; | |
10889 | case DW_AT_encoding: | |
10890 | return "DW_AT_encoding"; | |
10891 | case DW_AT_external: | |
10892 | return "DW_AT_external"; | |
10893 | case DW_AT_frame_base: | |
10894 | return "DW_AT_frame_base"; | |
10895 | case DW_AT_friend: | |
10896 | return "DW_AT_friend"; | |
10897 | case DW_AT_identifier_case: | |
10898 | return "DW_AT_identifier_case"; | |
10899 | case DW_AT_macro_info: | |
10900 | return "DW_AT_macro_info"; | |
10901 | case DW_AT_namelist_items: | |
10902 | return "DW_AT_namelist_items"; | |
10903 | case DW_AT_priority: | |
10904 | return "DW_AT_priority"; | |
10905 | case DW_AT_segment: | |
10906 | return "DW_AT_segment"; | |
10907 | case DW_AT_specification: | |
10908 | return "DW_AT_specification"; | |
10909 | case DW_AT_static_link: | |
10910 | return "DW_AT_static_link"; | |
10911 | case DW_AT_type: | |
10912 | return "DW_AT_type"; | |
10913 | case DW_AT_use_location: | |
10914 | return "DW_AT_use_location"; | |
10915 | case DW_AT_variable_parameter: | |
10916 | return "DW_AT_variable_parameter"; | |
10917 | case DW_AT_virtuality: | |
10918 | return "DW_AT_virtuality"; | |
10919 | case DW_AT_vtable_elem_location: | |
10920 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 10921 | /* DWARF 3 values. */ |
d9fa45fe DC |
10922 | case DW_AT_allocated: |
10923 | return "DW_AT_allocated"; | |
10924 | case DW_AT_associated: | |
10925 | return "DW_AT_associated"; | |
10926 | case DW_AT_data_location: | |
10927 | return "DW_AT_data_location"; | |
09fa0d7c JK |
10928 | case DW_AT_byte_stride: |
10929 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
10930 | case DW_AT_entry_pc: |
10931 | return "DW_AT_entry_pc"; | |
10932 | case DW_AT_use_UTF8: | |
10933 | return "DW_AT_use_UTF8"; | |
10934 | case DW_AT_extension: | |
10935 | return "DW_AT_extension"; | |
10936 | case DW_AT_ranges: | |
10937 | return "DW_AT_ranges"; | |
10938 | case DW_AT_trampoline: | |
10939 | return "DW_AT_trampoline"; | |
10940 | case DW_AT_call_column: | |
10941 | return "DW_AT_call_column"; | |
10942 | case DW_AT_call_file: | |
10943 | return "DW_AT_call_file"; | |
10944 | case DW_AT_call_line: | |
10945 | return "DW_AT_call_line"; | |
b7619582 GF |
10946 | case DW_AT_description: |
10947 | return "DW_AT_description"; | |
10948 | case DW_AT_binary_scale: | |
10949 | return "DW_AT_binary_scale"; | |
10950 | case DW_AT_decimal_scale: | |
10951 | return "DW_AT_decimal_scale"; | |
10952 | case DW_AT_small: | |
10953 | return "DW_AT_small"; | |
10954 | case DW_AT_decimal_sign: | |
10955 | return "DW_AT_decimal_sign"; | |
10956 | case DW_AT_digit_count: | |
10957 | return "DW_AT_digit_count"; | |
10958 | case DW_AT_picture_string: | |
10959 | return "DW_AT_picture_string"; | |
10960 | case DW_AT_mutable: | |
10961 | return "DW_AT_mutable"; | |
10962 | case DW_AT_threads_scaled: | |
10963 | return "DW_AT_threads_scaled"; | |
10964 | case DW_AT_explicit: | |
10965 | return "DW_AT_explicit"; | |
10966 | case DW_AT_object_pointer: | |
10967 | return "DW_AT_object_pointer"; | |
10968 | case DW_AT_endianity: | |
10969 | return "DW_AT_endianity"; | |
10970 | case DW_AT_elemental: | |
10971 | return "DW_AT_elemental"; | |
10972 | case DW_AT_pure: | |
10973 | return "DW_AT_pure"; | |
10974 | case DW_AT_recursive: | |
10975 | return "DW_AT_recursive"; | |
348e048f DE |
10976 | /* DWARF 4 values. */ |
10977 | case DW_AT_signature: | |
10978 | return "DW_AT_signature"; | |
31ef98ae TT |
10979 | case DW_AT_linkage_name: |
10980 | return "DW_AT_linkage_name"; | |
b7619582 | 10981 | /* SGI/MIPS extensions. */ |
c764a876 | 10982 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
c906108c SS |
10983 | case DW_AT_MIPS_fde: |
10984 | return "DW_AT_MIPS_fde"; | |
c764a876 | 10985 | #endif |
c906108c SS |
10986 | case DW_AT_MIPS_loop_begin: |
10987 | return "DW_AT_MIPS_loop_begin"; | |
10988 | case DW_AT_MIPS_tail_loop_begin: | |
10989 | return "DW_AT_MIPS_tail_loop_begin"; | |
10990 | case DW_AT_MIPS_epilog_begin: | |
10991 | return "DW_AT_MIPS_epilog_begin"; | |
10992 | case DW_AT_MIPS_loop_unroll_factor: | |
10993 | return "DW_AT_MIPS_loop_unroll_factor"; | |
10994 | case DW_AT_MIPS_software_pipeline_depth: | |
10995 | return "DW_AT_MIPS_software_pipeline_depth"; | |
10996 | case DW_AT_MIPS_linkage_name: | |
10997 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
10998 | case DW_AT_MIPS_stride: |
10999 | return "DW_AT_MIPS_stride"; | |
11000 | case DW_AT_MIPS_abstract_name: | |
11001 | return "DW_AT_MIPS_abstract_name"; | |
11002 | case DW_AT_MIPS_clone_origin: | |
11003 | return "DW_AT_MIPS_clone_origin"; | |
11004 | case DW_AT_MIPS_has_inlines: | |
11005 | return "DW_AT_MIPS_has_inlines"; | |
b7619582 | 11006 | /* HP extensions. */ |
c764a876 | 11007 | #ifndef MIPS /* collides with DW_AT_MIPS_fde */ |
b7619582 GF |
11008 | case DW_AT_HP_block_index: |
11009 | return "DW_AT_HP_block_index"; | |
c764a876 | 11010 | #endif |
b7619582 GF |
11011 | case DW_AT_HP_unmodifiable: |
11012 | return "DW_AT_HP_unmodifiable"; | |
11013 | case DW_AT_HP_actuals_stmt_list: | |
11014 | return "DW_AT_HP_actuals_stmt_list"; | |
11015 | case DW_AT_HP_proc_per_section: | |
11016 | return "DW_AT_HP_proc_per_section"; | |
11017 | case DW_AT_HP_raw_data_ptr: | |
11018 | return "DW_AT_HP_raw_data_ptr"; | |
11019 | case DW_AT_HP_pass_by_reference: | |
11020 | return "DW_AT_HP_pass_by_reference"; | |
11021 | case DW_AT_HP_opt_level: | |
11022 | return "DW_AT_HP_opt_level"; | |
11023 | case DW_AT_HP_prof_version_id: | |
11024 | return "DW_AT_HP_prof_version_id"; | |
11025 | case DW_AT_HP_opt_flags: | |
11026 | return "DW_AT_HP_opt_flags"; | |
11027 | case DW_AT_HP_cold_region_low_pc: | |
11028 | return "DW_AT_HP_cold_region_low_pc"; | |
11029 | case DW_AT_HP_cold_region_high_pc: | |
11030 | return "DW_AT_HP_cold_region_high_pc"; | |
11031 | case DW_AT_HP_all_variables_modifiable: | |
11032 | return "DW_AT_HP_all_variables_modifiable"; | |
11033 | case DW_AT_HP_linkage_name: | |
11034 | return "DW_AT_HP_linkage_name"; | |
11035 | case DW_AT_HP_prof_flags: | |
11036 | return "DW_AT_HP_prof_flags"; | |
11037 | /* GNU extensions. */ | |
c906108c SS |
11038 | case DW_AT_sf_names: |
11039 | return "DW_AT_sf_names"; | |
11040 | case DW_AT_src_info: | |
11041 | return "DW_AT_src_info"; | |
11042 | case DW_AT_mac_info: | |
11043 | return "DW_AT_mac_info"; | |
11044 | case DW_AT_src_coords: | |
11045 | return "DW_AT_src_coords"; | |
11046 | case DW_AT_body_begin: | |
11047 | return "DW_AT_body_begin"; | |
11048 | case DW_AT_body_end: | |
11049 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
11050 | case DW_AT_GNU_vector: |
11051 | return "DW_AT_GNU_vector"; | |
b7619582 GF |
11052 | /* VMS extensions. */ |
11053 | case DW_AT_VMS_rtnbeg_pd_address: | |
11054 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
11055 | /* UPC extension. */ | |
11056 | case DW_AT_upc_threads_scaled: | |
11057 | return "DW_AT_upc_threads_scaled"; | |
11058 | /* PGI (STMicroelectronics) extensions. */ | |
11059 | case DW_AT_PGI_lbase: | |
11060 | return "DW_AT_PGI_lbase"; | |
11061 | case DW_AT_PGI_soffset: | |
11062 | return "DW_AT_PGI_soffset"; | |
11063 | case DW_AT_PGI_lstride: | |
11064 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
11065 | default: |
11066 | return "DW_AT_<unknown>"; | |
11067 | } | |
11068 | } | |
11069 | ||
11070 | /* Convert a DWARF value form code into its string name. */ | |
11071 | ||
11072 | static char * | |
aa1ee363 | 11073 | dwarf_form_name (unsigned form) |
c906108c SS |
11074 | { |
11075 | switch (form) | |
11076 | { | |
11077 | case DW_FORM_addr: | |
11078 | return "DW_FORM_addr"; | |
11079 | case DW_FORM_block2: | |
11080 | return "DW_FORM_block2"; | |
11081 | case DW_FORM_block4: | |
11082 | return "DW_FORM_block4"; | |
11083 | case DW_FORM_data2: | |
11084 | return "DW_FORM_data2"; | |
11085 | case DW_FORM_data4: | |
11086 | return "DW_FORM_data4"; | |
11087 | case DW_FORM_data8: | |
11088 | return "DW_FORM_data8"; | |
11089 | case DW_FORM_string: | |
11090 | return "DW_FORM_string"; | |
11091 | case DW_FORM_block: | |
11092 | return "DW_FORM_block"; | |
11093 | case DW_FORM_block1: | |
11094 | return "DW_FORM_block1"; | |
11095 | case DW_FORM_data1: | |
11096 | return "DW_FORM_data1"; | |
11097 | case DW_FORM_flag: | |
11098 | return "DW_FORM_flag"; | |
11099 | case DW_FORM_sdata: | |
11100 | return "DW_FORM_sdata"; | |
11101 | case DW_FORM_strp: | |
11102 | return "DW_FORM_strp"; | |
11103 | case DW_FORM_udata: | |
11104 | return "DW_FORM_udata"; | |
11105 | case DW_FORM_ref_addr: | |
11106 | return "DW_FORM_ref_addr"; | |
11107 | case DW_FORM_ref1: | |
11108 | return "DW_FORM_ref1"; | |
11109 | case DW_FORM_ref2: | |
11110 | return "DW_FORM_ref2"; | |
11111 | case DW_FORM_ref4: | |
11112 | return "DW_FORM_ref4"; | |
11113 | case DW_FORM_ref8: | |
11114 | return "DW_FORM_ref8"; | |
11115 | case DW_FORM_ref_udata: | |
11116 | return "DW_FORM_ref_udata"; | |
11117 | case DW_FORM_indirect: | |
11118 | return "DW_FORM_indirect"; | |
348e048f DE |
11119 | case DW_FORM_sec_offset: |
11120 | return "DW_FORM_sec_offset"; | |
11121 | case DW_FORM_exprloc: | |
11122 | return "DW_FORM_exprloc"; | |
11123 | case DW_FORM_flag_present: | |
11124 | return "DW_FORM_flag_present"; | |
11125 | case DW_FORM_sig8: | |
11126 | return "DW_FORM_sig8"; | |
c906108c SS |
11127 | default: |
11128 | return "DW_FORM_<unknown>"; | |
11129 | } | |
11130 | } | |
11131 | ||
11132 | /* Convert a DWARF stack opcode into its string name. */ | |
11133 | ||
9eae7c52 TT |
11134 | const char * |
11135 | dwarf_stack_op_name (unsigned op, int def) | |
c906108c SS |
11136 | { |
11137 | switch (op) | |
11138 | { | |
11139 | case DW_OP_addr: | |
11140 | return "DW_OP_addr"; | |
11141 | case DW_OP_deref: | |
11142 | return "DW_OP_deref"; | |
11143 | case DW_OP_const1u: | |
11144 | return "DW_OP_const1u"; | |
11145 | case DW_OP_const1s: | |
11146 | return "DW_OP_const1s"; | |
11147 | case DW_OP_const2u: | |
11148 | return "DW_OP_const2u"; | |
11149 | case DW_OP_const2s: | |
11150 | return "DW_OP_const2s"; | |
11151 | case DW_OP_const4u: | |
11152 | return "DW_OP_const4u"; | |
11153 | case DW_OP_const4s: | |
11154 | return "DW_OP_const4s"; | |
11155 | case DW_OP_const8u: | |
11156 | return "DW_OP_const8u"; | |
11157 | case DW_OP_const8s: | |
11158 | return "DW_OP_const8s"; | |
11159 | case DW_OP_constu: | |
11160 | return "DW_OP_constu"; | |
11161 | case DW_OP_consts: | |
11162 | return "DW_OP_consts"; | |
11163 | case DW_OP_dup: | |
11164 | return "DW_OP_dup"; | |
11165 | case DW_OP_drop: | |
11166 | return "DW_OP_drop"; | |
11167 | case DW_OP_over: | |
11168 | return "DW_OP_over"; | |
11169 | case DW_OP_pick: | |
11170 | return "DW_OP_pick"; | |
11171 | case DW_OP_swap: | |
11172 | return "DW_OP_swap"; | |
11173 | case DW_OP_rot: | |
11174 | return "DW_OP_rot"; | |
11175 | case DW_OP_xderef: | |
11176 | return "DW_OP_xderef"; | |
11177 | case DW_OP_abs: | |
11178 | return "DW_OP_abs"; | |
11179 | case DW_OP_and: | |
11180 | return "DW_OP_and"; | |
11181 | case DW_OP_div: | |
11182 | return "DW_OP_div"; | |
11183 | case DW_OP_minus: | |
11184 | return "DW_OP_minus"; | |
11185 | case DW_OP_mod: | |
11186 | return "DW_OP_mod"; | |
11187 | case DW_OP_mul: | |
11188 | return "DW_OP_mul"; | |
11189 | case DW_OP_neg: | |
11190 | return "DW_OP_neg"; | |
11191 | case DW_OP_not: | |
11192 | return "DW_OP_not"; | |
11193 | case DW_OP_or: | |
11194 | return "DW_OP_or"; | |
11195 | case DW_OP_plus: | |
11196 | return "DW_OP_plus"; | |
11197 | case DW_OP_plus_uconst: | |
11198 | return "DW_OP_plus_uconst"; | |
11199 | case DW_OP_shl: | |
11200 | return "DW_OP_shl"; | |
11201 | case DW_OP_shr: | |
11202 | return "DW_OP_shr"; | |
11203 | case DW_OP_shra: | |
11204 | return "DW_OP_shra"; | |
11205 | case DW_OP_xor: | |
11206 | return "DW_OP_xor"; | |
11207 | case DW_OP_bra: | |
11208 | return "DW_OP_bra"; | |
11209 | case DW_OP_eq: | |
11210 | return "DW_OP_eq"; | |
11211 | case DW_OP_ge: | |
11212 | return "DW_OP_ge"; | |
11213 | case DW_OP_gt: | |
11214 | return "DW_OP_gt"; | |
11215 | case DW_OP_le: | |
11216 | return "DW_OP_le"; | |
11217 | case DW_OP_lt: | |
11218 | return "DW_OP_lt"; | |
11219 | case DW_OP_ne: | |
11220 | return "DW_OP_ne"; | |
11221 | case DW_OP_skip: | |
11222 | return "DW_OP_skip"; | |
11223 | case DW_OP_lit0: | |
11224 | return "DW_OP_lit0"; | |
11225 | case DW_OP_lit1: | |
11226 | return "DW_OP_lit1"; | |
11227 | case DW_OP_lit2: | |
11228 | return "DW_OP_lit2"; | |
11229 | case DW_OP_lit3: | |
11230 | return "DW_OP_lit3"; | |
11231 | case DW_OP_lit4: | |
11232 | return "DW_OP_lit4"; | |
11233 | case DW_OP_lit5: | |
11234 | return "DW_OP_lit5"; | |
11235 | case DW_OP_lit6: | |
11236 | return "DW_OP_lit6"; | |
11237 | case DW_OP_lit7: | |
11238 | return "DW_OP_lit7"; | |
11239 | case DW_OP_lit8: | |
11240 | return "DW_OP_lit8"; | |
11241 | case DW_OP_lit9: | |
11242 | return "DW_OP_lit9"; | |
11243 | case DW_OP_lit10: | |
11244 | return "DW_OP_lit10"; | |
11245 | case DW_OP_lit11: | |
11246 | return "DW_OP_lit11"; | |
11247 | case DW_OP_lit12: | |
11248 | return "DW_OP_lit12"; | |
11249 | case DW_OP_lit13: | |
11250 | return "DW_OP_lit13"; | |
11251 | case DW_OP_lit14: | |
11252 | return "DW_OP_lit14"; | |
11253 | case DW_OP_lit15: | |
11254 | return "DW_OP_lit15"; | |
11255 | case DW_OP_lit16: | |
11256 | return "DW_OP_lit16"; | |
11257 | case DW_OP_lit17: | |
11258 | return "DW_OP_lit17"; | |
11259 | case DW_OP_lit18: | |
11260 | return "DW_OP_lit18"; | |
11261 | case DW_OP_lit19: | |
11262 | return "DW_OP_lit19"; | |
11263 | case DW_OP_lit20: | |
11264 | return "DW_OP_lit20"; | |
11265 | case DW_OP_lit21: | |
11266 | return "DW_OP_lit21"; | |
11267 | case DW_OP_lit22: | |
11268 | return "DW_OP_lit22"; | |
11269 | case DW_OP_lit23: | |
11270 | return "DW_OP_lit23"; | |
11271 | case DW_OP_lit24: | |
11272 | return "DW_OP_lit24"; | |
11273 | case DW_OP_lit25: | |
11274 | return "DW_OP_lit25"; | |
11275 | case DW_OP_lit26: | |
11276 | return "DW_OP_lit26"; | |
11277 | case DW_OP_lit27: | |
11278 | return "DW_OP_lit27"; | |
11279 | case DW_OP_lit28: | |
11280 | return "DW_OP_lit28"; | |
11281 | case DW_OP_lit29: | |
11282 | return "DW_OP_lit29"; | |
11283 | case DW_OP_lit30: | |
11284 | return "DW_OP_lit30"; | |
11285 | case DW_OP_lit31: | |
11286 | return "DW_OP_lit31"; | |
11287 | case DW_OP_reg0: | |
11288 | return "DW_OP_reg0"; | |
11289 | case DW_OP_reg1: | |
11290 | return "DW_OP_reg1"; | |
11291 | case DW_OP_reg2: | |
11292 | return "DW_OP_reg2"; | |
11293 | case DW_OP_reg3: | |
11294 | return "DW_OP_reg3"; | |
11295 | case DW_OP_reg4: | |
11296 | return "DW_OP_reg4"; | |
11297 | case DW_OP_reg5: | |
11298 | return "DW_OP_reg5"; | |
11299 | case DW_OP_reg6: | |
11300 | return "DW_OP_reg6"; | |
11301 | case DW_OP_reg7: | |
11302 | return "DW_OP_reg7"; | |
11303 | case DW_OP_reg8: | |
11304 | return "DW_OP_reg8"; | |
11305 | case DW_OP_reg9: | |
11306 | return "DW_OP_reg9"; | |
11307 | case DW_OP_reg10: | |
11308 | return "DW_OP_reg10"; | |
11309 | case DW_OP_reg11: | |
11310 | return "DW_OP_reg11"; | |
11311 | case DW_OP_reg12: | |
11312 | return "DW_OP_reg12"; | |
11313 | case DW_OP_reg13: | |
11314 | return "DW_OP_reg13"; | |
11315 | case DW_OP_reg14: | |
11316 | return "DW_OP_reg14"; | |
11317 | case DW_OP_reg15: | |
11318 | return "DW_OP_reg15"; | |
11319 | case DW_OP_reg16: | |
11320 | return "DW_OP_reg16"; | |
11321 | case DW_OP_reg17: | |
11322 | return "DW_OP_reg17"; | |
11323 | case DW_OP_reg18: | |
11324 | return "DW_OP_reg18"; | |
11325 | case DW_OP_reg19: | |
11326 | return "DW_OP_reg19"; | |
11327 | case DW_OP_reg20: | |
11328 | return "DW_OP_reg20"; | |
11329 | case DW_OP_reg21: | |
11330 | return "DW_OP_reg21"; | |
11331 | case DW_OP_reg22: | |
11332 | return "DW_OP_reg22"; | |
11333 | case DW_OP_reg23: | |
11334 | return "DW_OP_reg23"; | |
11335 | case DW_OP_reg24: | |
11336 | return "DW_OP_reg24"; | |
11337 | case DW_OP_reg25: | |
11338 | return "DW_OP_reg25"; | |
11339 | case DW_OP_reg26: | |
11340 | return "DW_OP_reg26"; | |
11341 | case DW_OP_reg27: | |
11342 | return "DW_OP_reg27"; | |
11343 | case DW_OP_reg28: | |
11344 | return "DW_OP_reg28"; | |
11345 | case DW_OP_reg29: | |
11346 | return "DW_OP_reg29"; | |
11347 | case DW_OP_reg30: | |
11348 | return "DW_OP_reg30"; | |
11349 | case DW_OP_reg31: | |
11350 | return "DW_OP_reg31"; | |
11351 | case DW_OP_breg0: | |
11352 | return "DW_OP_breg0"; | |
11353 | case DW_OP_breg1: | |
11354 | return "DW_OP_breg1"; | |
11355 | case DW_OP_breg2: | |
11356 | return "DW_OP_breg2"; | |
11357 | case DW_OP_breg3: | |
11358 | return "DW_OP_breg3"; | |
11359 | case DW_OP_breg4: | |
11360 | return "DW_OP_breg4"; | |
11361 | case DW_OP_breg5: | |
11362 | return "DW_OP_breg5"; | |
11363 | case DW_OP_breg6: | |
11364 | return "DW_OP_breg6"; | |
11365 | case DW_OP_breg7: | |
11366 | return "DW_OP_breg7"; | |
11367 | case DW_OP_breg8: | |
11368 | return "DW_OP_breg8"; | |
11369 | case DW_OP_breg9: | |
11370 | return "DW_OP_breg9"; | |
11371 | case DW_OP_breg10: | |
11372 | return "DW_OP_breg10"; | |
11373 | case DW_OP_breg11: | |
11374 | return "DW_OP_breg11"; | |
11375 | case DW_OP_breg12: | |
11376 | return "DW_OP_breg12"; | |
11377 | case DW_OP_breg13: | |
11378 | return "DW_OP_breg13"; | |
11379 | case DW_OP_breg14: | |
11380 | return "DW_OP_breg14"; | |
11381 | case DW_OP_breg15: | |
11382 | return "DW_OP_breg15"; | |
11383 | case DW_OP_breg16: | |
11384 | return "DW_OP_breg16"; | |
11385 | case DW_OP_breg17: | |
11386 | return "DW_OP_breg17"; | |
11387 | case DW_OP_breg18: | |
11388 | return "DW_OP_breg18"; | |
11389 | case DW_OP_breg19: | |
11390 | return "DW_OP_breg19"; | |
11391 | case DW_OP_breg20: | |
11392 | return "DW_OP_breg20"; | |
11393 | case DW_OP_breg21: | |
11394 | return "DW_OP_breg21"; | |
11395 | case DW_OP_breg22: | |
11396 | return "DW_OP_breg22"; | |
11397 | case DW_OP_breg23: | |
11398 | return "DW_OP_breg23"; | |
11399 | case DW_OP_breg24: | |
11400 | return "DW_OP_breg24"; | |
11401 | case DW_OP_breg25: | |
11402 | return "DW_OP_breg25"; | |
11403 | case DW_OP_breg26: | |
11404 | return "DW_OP_breg26"; | |
11405 | case DW_OP_breg27: | |
11406 | return "DW_OP_breg27"; | |
11407 | case DW_OP_breg28: | |
11408 | return "DW_OP_breg28"; | |
11409 | case DW_OP_breg29: | |
11410 | return "DW_OP_breg29"; | |
11411 | case DW_OP_breg30: | |
11412 | return "DW_OP_breg30"; | |
11413 | case DW_OP_breg31: | |
11414 | return "DW_OP_breg31"; | |
11415 | case DW_OP_regx: | |
11416 | return "DW_OP_regx"; | |
11417 | case DW_OP_fbreg: | |
11418 | return "DW_OP_fbreg"; | |
11419 | case DW_OP_bregx: | |
11420 | return "DW_OP_bregx"; | |
11421 | case DW_OP_piece: | |
11422 | return "DW_OP_piece"; | |
11423 | case DW_OP_deref_size: | |
11424 | return "DW_OP_deref_size"; | |
11425 | case DW_OP_xderef_size: | |
11426 | return "DW_OP_xderef_size"; | |
11427 | case DW_OP_nop: | |
11428 | return "DW_OP_nop"; | |
b7619582 | 11429 | /* DWARF 3 extensions. */ |
ed348acc EZ |
11430 | case DW_OP_push_object_address: |
11431 | return "DW_OP_push_object_address"; | |
11432 | case DW_OP_call2: | |
11433 | return "DW_OP_call2"; | |
11434 | case DW_OP_call4: | |
11435 | return "DW_OP_call4"; | |
11436 | case DW_OP_call_ref: | |
11437 | return "DW_OP_call_ref"; | |
b7619582 GF |
11438 | case DW_OP_form_tls_address: |
11439 | return "DW_OP_form_tls_address"; | |
11440 | case DW_OP_call_frame_cfa: | |
11441 | return "DW_OP_call_frame_cfa"; | |
11442 | case DW_OP_bit_piece: | |
11443 | return "DW_OP_bit_piece"; | |
9eae7c52 TT |
11444 | /* DWARF 4 extensions. */ |
11445 | case DW_OP_implicit_value: | |
11446 | return "DW_OP_implicit_value"; | |
11447 | case DW_OP_stack_value: | |
11448 | return "DW_OP_stack_value"; | |
11449 | /* GNU extensions. */ | |
ed348acc EZ |
11450 | case DW_OP_GNU_push_tls_address: |
11451 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
11452 | case DW_OP_GNU_uninit: |
11453 | return "DW_OP_GNU_uninit"; | |
c906108c | 11454 | default: |
9eae7c52 | 11455 | return def ? "OP_<unknown>" : NULL; |
c906108c SS |
11456 | } |
11457 | } | |
11458 | ||
11459 | static char * | |
fba45db2 | 11460 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
11461 | { |
11462 | if (mybool) | |
11463 | return "TRUE"; | |
11464 | else | |
11465 | return "FALSE"; | |
11466 | } | |
11467 | ||
11468 | /* Convert a DWARF type code into its string name. */ | |
11469 | ||
11470 | static char * | |
aa1ee363 | 11471 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
11472 | { |
11473 | switch (enc) | |
11474 | { | |
b7619582 GF |
11475 | case DW_ATE_void: |
11476 | return "DW_ATE_void"; | |
c906108c SS |
11477 | case DW_ATE_address: |
11478 | return "DW_ATE_address"; | |
11479 | case DW_ATE_boolean: | |
11480 | return "DW_ATE_boolean"; | |
11481 | case DW_ATE_complex_float: | |
11482 | return "DW_ATE_complex_float"; | |
11483 | case DW_ATE_float: | |
11484 | return "DW_ATE_float"; | |
11485 | case DW_ATE_signed: | |
11486 | return "DW_ATE_signed"; | |
11487 | case DW_ATE_signed_char: | |
11488 | return "DW_ATE_signed_char"; | |
11489 | case DW_ATE_unsigned: | |
11490 | return "DW_ATE_unsigned"; | |
11491 | case DW_ATE_unsigned_char: | |
11492 | return "DW_ATE_unsigned_char"; | |
b7619582 | 11493 | /* DWARF 3. */ |
d9fa45fe DC |
11494 | case DW_ATE_imaginary_float: |
11495 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
11496 | case DW_ATE_packed_decimal: |
11497 | return "DW_ATE_packed_decimal"; | |
11498 | case DW_ATE_numeric_string: | |
11499 | return "DW_ATE_numeric_string"; | |
11500 | case DW_ATE_edited: | |
11501 | return "DW_ATE_edited"; | |
11502 | case DW_ATE_signed_fixed: | |
11503 | return "DW_ATE_signed_fixed"; | |
11504 | case DW_ATE_unsigned_fixed: | |
11505 | return "DW_ATE_unsigned_fixed"; | |
11506 | case DW_ATE_decimal_float: | |
11507 | return "DW_ATE_decimal_float"; | |
75079b2b TT |
11508 | /* DWARF 4. */ |
11509 | case DW_ATE_UTF: | |
11510 | return "DW_ATE_UTF"; | |
b7619582 GF |
11511 | /* HP extensions. */ |
11512 | case DW_ATE_HP_float80: | |
11513 | return "DW_ATE_HP_float80"; | |
11514 | case DW_ATE_HP_complex_float80: | |
11515 | return "DW_ATE_HP_complex_float80"; | |
11516 | case DW_ATE_HP_float128: | |
11517 | return "DW_ATE_HP_float128"; | |
11518 | case DW_ATE_HP_complex_float128: | |
11519 | return "DW_ATE_HP_complex_float128"; | |
11520 | case DW_ATE_HP_floathpintel: | |
11521 | return "DW_ATE_HP_floathpintel"; | |
11522 | case DW_ATE_HP_imaginary_float80: | |
11523 | return "DW_ATE_HP_imaginary_float80"; | |
11524 | case DW_ATE_HP_imaginary_float128: | |
11525 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
11526 | default: |
11527 | return "DW_ATE_<unknown>"; | |
11528 | } | |
11529 | } | |
11530 | ||
11531 | /* Convert a DWARF call frame info operation to its string name. */ | |
11532 | ||
11533 | #if 0 | |
11534 | static char * | |
aa1ee363 | 11535 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
11536 | { |
11537 | switch (cfi_opc) | |
11538 | { | |
11539 | case DW_CFA_advance_loc: | |
11540 | return "DW_CFA_advance_loc"; | |
11541 | case DW_CFA_offset: | |
11542 | return "DW_CFA_offset"; | |
11543 | case DW_CFA_restore: | |
11544 | return "DW_CFA_restore"; | |
11545 | case DW_CFA_nop: | |
11546 | return "DW_CFA_nop"; | |
11547 | case DW_CFA_set_loc: | |
11548 | return "DW_CFA_set_loc"; | |
11549 | case DW_CFA_advance_loc1: | |
11550 | return "DW_CFA_advance_loc1"; | |
11551 | case DW_CFA_advance_loc2: | |
11552 | return "DW_CFA_advance_loc2"; | |
11553 | case DW_CFA_advance_loc4: | |
11554 | return "DW_CFA_advance_loc4"; | |
11555 | case DW_CFA_offset_extended: | |
11556 | return "DW_CFA_offset_extended"; | |
11557 | case DW_CFA_restore_extended: | |
11558 | return "DW_CFA_restore_extended"; | |
11559 | case DW_CFA_undefined: | |
11560 | return "DW_CFA_undefined"; | |
11561 | case DW_CFA_same_value: | |
11562 | return "DW_CFA_same_value"; | |
11563 | case DW_CFA_register: | |
11564 | return "DW_CFA_register"; | |
11565 | case DW_CFA_remember_state: | |
11566 | return "DW_CFA_remember_state"; | |
11567 | case DW_CFA_restore_state: | |
11568 | return "DW_CFA_restore_state"; | |
11569 | case DW_CFA_def_cfa: | |
11570 | return "DW_CFA_def_cfa"; | |
11571 | case DW_CFA_def_cfa_register: | |
11572 | return "DW_CFA_def_cfa_register"; | |
11573 | case DW_CFA_def_cfa_offset: | |
11574 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 11575 | /* DWARF 3. */ |
985cb1a3 JM |
11576 | case DW_CFA_def_cfa_expression: |
11577 | return "DW_CFA_def_cfa_expression"; | |
11578 | case DW_CFA_expression: | |
11579 | return "DW_CFA_expression"; | |
11580 | case DW_CFA_offset_extended_sf: | |
11581 | return "DW_CFA_offset_extended_sf"; | |
11582 | case DW_CFA_def_cfa_sf: | |
11583 | return "DW_CFA_def_cfa_sf"; | |
11584 | case DW_CFA_def_cfa_offset_sf: | |
11585 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
11586 | case DW_CFA_val_offset: |
11587 | return "DW_CFA_val_offset"; | |
11588 | case DW_CFA_val_offset_sf: | |
11589 | return "DW_CFA_val_offset_sf"; | |
11590 | case DW_CFA_val_expression: | |
11591 | return "DW_CFA_val_expression"; | |
11592 | /* SGI/MIPS specific. */ | |
c906108c SS |
11593 | case DW_CFA_MIPS_advance_loc8: |
11594 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 11595 | /* GNU extensions. */ |
985cb1a3 JM |
11596 | case DW_CFA_GNU_window_save: |
11597 | return "DW_CFA_GNU_window_save"; | |
11598 | case DW_CFA_GNU_args_size: | |
11599 | return "DW_CFA_GNU_args_size"; | |
11600 | case DW_CFA_GNU_negative_offset_extended: | |
11601 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
11602 | default: |
11603 | return "DW_CFA_<unknown>"; | |
11604 | } | |
11605 | } | |
11606 | #endif | |
11607 | ||
f9aca02d | 11608 | static void |
d97bc12b | 11609 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
11610 | { |
11611 | unsigned int i; | |
11612 | ||
d97bc12b DE |
11613 | print_spaces (indent, f); |
11614 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 11615 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
11616 | |
11617 | if (die->parent != NULL) | |
11618 | { | |
11619 | print_spaces (indent, f); | |
11620 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
11621 | die->parent->offset); | |
11622 | } | |
11623 | ||
11624 | print_spaces (indent, f); | |
11625 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 11626 | dwarf_bool_name (die->child != NULL)); |
c906108c | 11627 | |
d97bc12b DE |
11628 | print_spaces (indent, f); |
11629 | fprintf_unfiltered (f, " attributes:\n"); | |
11630 | ||
c906108c SS |
11631 | for (i = 0; i < die->num_attrs; ++i) |
11632 | { | |
d97bc12b DE |
11633 | print_spaces (indent, f); |
11634 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
11635 | dwarf_attr_name (die->attrs[i].name), |
11636 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 11637 | |
c906108c SS |
11638 | switch (die->attrs[i].form) |
11639 | { | |
11640 | case DW_FORM_ref_addr: | |
11641 | case DW_FORM_addr: | |
d97bc12b | 11642 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 11643 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
11644 | break; |
11645 | case DW_FORM_block2: | |
11646 | case DW_FORM_block4: | |
11647 | case DW_FORM_block: | |
11648 | case DW_FORM_block1: | |
d97bc12b | 11649 | fprintf_unfiltered (f, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 11650 | break; |
2dc7f7b3 TT |
11651 | case DW_FORM_exprloc: |
11652 | fprintf_unfiltered (f, "expression: size %u", | |
11653 | DW_BLOCK (&die->attrs[i])->size); | |
11654 | break; | |
10b3939b DJ |
11655 | case DW_FORM_ref1: |
11656 | case DW_FORM_ref2: | |
11657 | case DW_FORM_ref4: | |
d97bc12b | 11658 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
11659 | (long) (DW_ADDR (&die->attrs[i]))); |
11660 | break; | |
c906108c SS |
11661 | case DW_FORM_data1: |
11662 | case DW_FORM_data2: | |
11663 | case DW_FORM_data4: | |
ce5d95e1 | 11664 | case DW_FORM_data8: |
c906108c SS |
11665 | case DW_FORM_udata: |
11666 | case DW_FORM_sdata: | |
43bbcdc2 PH |
11667 | fprintf_unfiltered (f, "constant: %s", |
11668 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 11669 | break; |
2dc7f7b3 TT |
11670 | case DW_FORM_sec_offset: |
11671 | fprintf_unfiltered (f, "section offset: %s", | |
11672 | pulongest (DW_UNSND (&die->attrs[i]))); | |
11673 | break; | |
348e048f DE |
11674 | case DW_FORM_sig8: |
11675 | if (DW_SIGNATURED_TYPE (&die->attrs[i]) != NULL) | |
11676 | fprintf_unfiltered (f, "signatured type, offset: 0x%x", | |
11677 | DW_SIGNATURED_TYPE (&die->attrs[i])->offset); | |
11678 | else | |
11679 | fprintf_unfiltered (f, "signatured type, offset: unknown"); | |
11680 | break; | |
c906108c | 11681 | case DW_FORM_string: |
4bdf3d34 | 11682 | case DW_FORM_strp: |
8285870a | 11683 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 11684 | DW_STRING (&die->attrs[i]) |
8285870a JK |
11685 | ? DW_STRING (&die->attrs[i]) : "", |
11686 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
11687 | break; |
11688 | case DW_FORM_flag: | |
11689 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 11690 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 11691 | else |
d97bc12b | 11692 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 11693 | break; |
2dc7f7b3 TT |
11694 | case DW_FORM_flag_present: |
11695 | fprintf_unfiltered (f, "flag: TRUE"); | |
11696 | break; | |
a8329558 KW |
11697 | case DW_FORM_indirect: |
11698 | /* the reader will have reduced the indirect form to | |
11699 | the "base form" so this form should not occur */ | |
d97bc12b | 11700 | fprintf_unfiltered (f, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 11701 | break; |
c906108c | 11702 | default: |
d97bc12b | 11703 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 11704 | die->attrs[i].form); |
d97bc12b | 11705 | break; |
c906108c | 11706 | } |
d97bc12b | 11707 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
11708 | } |
11709 | } | |
11710 | ||
f9aca02d | 11711 | static void |
d97bc12b | 11712 | dump_die_for_error (struct die_info *die) |
c906108c | 11713 | { |
d97bc12b DE |
11714 | dump_die_shallow (gdb_stderr, 0, die); |
11715 | } | |
11716 | ||
11717 | static void | |
11718 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
11719 | { | |
11720 | int indent = level * 4; | |
11721 | ||
11722 | gdb_assert (die != NULL); | |
11723 | ||
11724 | if (level >= max_level) | |
11725 | return; | |
11726 | ||
11727 | dump_die_shallow (f, indent, die); | |
11728 | ||
11729 | if (die->child != NULL) | |
c906108c | 11730 | { |
d97bc12b DE |
11731 | print_spaces (indent, f); |
11732 | fprintf_unfiltered (f, " Children:"); | |
11733 | if (level + 1 < max_level) | |
11734 | { | |
11735 | fprintf_unfiltered (f, "\n"); | |
11736 | dump_die_1 (f, level + 1, max_level, die->child); | |
11737 | } | |
11738 | else | |
11739 | { | |
11740 | fprintf_unfiltered (f, " [not printed, max nesting level reached]\n"); | |
11741 | } | |
11742 | } | |
11743 | ||
11744 | if (die->sibling != NULL && level > 0) | |
11745 | { | |
11746 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
11747 | } |
11748 | } | |
11749 | ||
d97bc12b DE |
11750 | /* This is called from the pdie macro in gdbinit.in. |
11751 | It's not static so gcc will keep a copy callable from gdb. */ | |
11752 | ||
11753 | void | |
11754 | dump_die (struct die_info *die, int max_level) | |
11755 | { | |
11756 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
11757 | } | |
11758 | ||
f9aca02d | 11759 | static void |
51545339 | 11760 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11761 | { |
51545339 | 11762 | void **slot; |
c906108c | 11763 | |
51545339 DJ |
11764 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
11765 | ||
11766 | *slot = die; | |
c906108c SS |
11767 | } |
11768 | ||
93311388 DE |
11769 | static int |
11770 | is_ref_attr (struct attribute *attr) | |
c906108c | 11771 | { |
c906108c SS |
11772 | switch (attr->form) |
11773 | { | |
11774 | case DW_FORM_ref_addr: | |
c906108c SS |
11775 | case DW_FORM_ref1: |
11776 | case DW_FORM_ref2: | |
11777 | case DW_FORM_ref4: | |
613e1657 | 11778 | case DW_FORM_ref8: |
c906108c | 11779 | case DW_FORM_ref_udata: |
93311388 | 11780 | return 1; |
c906108c | 11781 | default: |
93311388 | 11782 | return 0; |
c906108c | 11783 | } |
93311388 DE |
11784 | } |
11785 | ||
11786 | static unsigned int | |
11787 | dwarf2_get_ref_die_offset (struct attribute *attr) | |
11788 | { | |
11789 | if (is_ref_attr (attr)) | |
11790 | return DW_ADDR (attr); | |
11791 | ||
11792 | complaint (&symfile_complaints, | |
11793 | _("unsupported die ref attribute form: '%s'"), | |
11794 | dwarf_form_name (attr->form)); | |
11795 | return 0; | |
c906108c SS |
11796 | } |
11797 | ||
43bbcdc2 PH |
11798 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
11799 | * the value held by the attribute is not constant. */ | |
a02abb62 | 11800 | |
43bbcdc2 | 11801 | static LONGEST |
a02abb62 JB |
11802 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) |
11803 | { | |
11804 | if (attr->form == DW_FORM_sdata) | |
11805 | return DW_SND (attr); | |
11806 | else if (attr->form == DW_FORM_udata | |
11807 | || attr->form == DW_FORM_data1 | |
11808 | || attr->form == DW_FORM_data2 | |
11809 | || attr->form == DW_FORM_data4 | |
11810 | || attr->form == DW_FORM_data8) | |
11811 | return DW_UNSND (attr); | |
11812 | else | |
11813 | { | |
e2e0b3e5 | 11814 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
11815 | dwarf_form_name (attr->form)); |
11816 | return default_value; | |
11817 | } | |
11818 | } | |
11819 | ||
03dd20cc | 11820 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
348e048f DE |
11821 | unit and add it to our queue. |
11822 | The result is non-zero if PER_CU was queued, otherwise the result is zero | |
11823 | meaning either PER_CU is already queued or it is already loaded. */ | |
03dd20cc | 11824 | |
348e048f | 11825 | static int |
03dd20cc DJ |
11826 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, |
11827 | struct dwarf2_per_cu_data *per_cu) | |
11828 | { | |
11829 | /* Mark the dependence relation so that we don't flush PER_CU | |
11830 | too early. */ | |
11831 | dwarf2_add_dependence (this_cu, per_cu); | |
11832 | ||
11833 | /* If it's already on the queue, we have nothing to do. */ | |
11834 | if (per_cu->queued) | |
348e048f | 11835 | return 0; |
03dd20cc DJ |
11836 | |
11837 | /* If the compilation unit is already loaded, just mark it as | |
11838 | used. */ | |
11839 | if (per_cu->cu != NULL) | |
11840 | { | |
11841 | per_cu->cu->last_used = 0; | |
348e048f | 11842 | return 0; |
03dd20cc DJ |
11843 | } |
11844 | ||
11845 | /* Add it to the queue. */ | |
11846 | queue_comp_unit (per_cu, this_cu->objfile); | |
348e048f DE |
11847 | |
11848 | return 1; | |
11849 | } | |
11850 | ||
11851 | /* Follow reference or signature attribute ATTR of SRC_DIE. | |
11852 | On entry *REF_CU is the CU of SRC_DIE. | |
11853 | On exit *REF_CU is the CU of the result. */ | |
11854 | ||
11855 | static struct die_info * | |
11856 | follow_die_ref_or_sig (struct die_info *src_die, struct attribute *attr, | |
11857 | struct dwarf2_cu **ref_cu) | |
11858 | { | |
11859 | struct die_info *die; | |
11860 | ||
11861 | if (is_ref_attr (attr)) | |
11862 | die = follow_die_ref (src_die, attr, ref_cu); | |
11863 | else if (attr->form == DW_FORM_sig8) | |
11864 | die = follow_die_sig (src_die, attr, ref_cu); | |
11865 | else | |
11866 | { | |
11867 | dump_die_for_error (src_die); | |
11868 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
11869 | (*ref_cu)->objfile->name); | |
11870 | } | |
11871 | ||
11872 | return die; | |
03dd20cc DJ |
11873 | } |
11874 | ||
5c631832 JK |
11875 | /* Follow reference OFFSET. |
11876 | On entry *REF_CU is the CU of source DIE referencing OFFSET. | |
f504f079 DE |
11877 | On exit *REF_CU is the CU of the result. */ |
11878 | ||
f9aca02d | 11879 | static struct die_info * |
5c631832 | 11880 | follow_die_offset (unsigned int offset, struct dwarf2_cu **ref_cu) |
c906108c | 11881 | { |
10b3939b | 11882 | struct die_info temp_die; |
f2f0e013 | 11883 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 11884 | |
348e048f DE |
11885 | gdb_assert (cu->per_cu != NULL); |
11886 | ||
348e048f DE |
11887 | if (cu->per_cu->from_debug_types) |
11888 | { | |
11889 | /* .debug_types CUs cannot reference anything outside their CU. | |
11890 | If they need to, they have to reference a signatured type via | |
11891 | DW_FORM_sig8. */ | |
11892 | if (! offset_in_cu_p (&cu->header, offset)) | |
5c631832 | 11893 | return NULL; |
348e048f DE |
11894 | target_cu = cu; |
11895 | } | |
11896 | else if (! offset_in_cu_p (&cu->header, offset)) | |
10b3939b DJ |
11897 | { |
11898 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 11899 | |
45452591 | 11900 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
11901 | |
11902 | /* If necessary, add it to the queue and load its DIEs. */ | |
348e048f DE |
11903 | if (maybe_queue_comp_unit (cu, per_cu)) |
11904 | load_full_comp_unit (per_cu, cu->objfile); | |
03dd20cc | 11905 | |
10b3939b DJ |
11906 | target_cu = per_cu->cu; |
11907 | } | |
11908 | else | |
11909 | target_cu = cu; | |
c906108c | 11910 | |
f2f0e013 | 11911 | *ref_cu = target_cu; |
51545339 | 11912 | temp_die.offset = offset; |
5c631832 JK |
11913 | return htab_find_with_hash (target_cu->die_hash, &temp_die, offset); |
11914 | } | |
10b3939b | 11915 | |
5c631832 JK |
11916 | /* Follow reference attribute ATTR of SRC_DIE. |
11917 | On entry *REF_CU is the CU of SRC_DIE. | |
11918 | On exit *REF_CU is the CU of the result. */ | |
11919 | ||
11920 | static struct die_info * | |
11921 | follow_die_ref (struct die_info *src_die, struct attribute *attr, | |
11922 | struct dwarf2_cu **ref_cu) | |
11923 | { | |
11924 | unsigned int offset = dwarf2_get_ref_die_offset (attr); | |
11925 | struct dwarf2_cu *cu = *ref_cu; | |
11926 | struct die_info *die; | |
11927 | ||
11928 | die = follow_die_offset (offset, ref_cu); | |
11929 | if (!die) | |
11930 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced from DIE " | |
11931 | "at 0x%x [in module %s]"), | |
11932 | offset, src_die->offset, cu->objfile->name); | |
348e048f | 11933 | |
5c631832 JK |
11934 | return die; |
11935 | } | |
11936 | ||
11937 | /* Return DWARF block and its CU referenced by OFFSET at PER_CU. Returned | |
11938 | value is intended for DW_OP_call*. */ | |
11939 | ||
11940 | struct dwarf2_locexpr_baton | |
11941 | dwarf2_fetch_die_location_block (unsigned int offset, | |
11942 | struct dwarf2_per_cu_data *per_cu) | |
11943 | { | |
11944 | struct dwarf2_cu *cu = per_cu->cu; | |
11945 | struct die_info *die; | |
11946 | struct attribute *attr; | |
11947 | struct dwarf2_locexpr_baton retval; | |
11948 | ||
11949 | die = follow_die_offset (offset, &cu); | |
11950 | if (!die) | |
11951 | error (_("Dwarf Error: Cannot find DIE at 0x%x referenced in module %s"), | |
11952 | offset, per_cu->cu->objfile->name); | |
11953 | ||
11954 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
11955 | if (!attr) | |
11956 | { | |
11957 | /* DWARF: "If there is no such attribute, then there is no effect.". */ | |
11958 | ||
11959 | retval.data = NULL; | |
11960 | retval.size = 0; | |
11961 | } | |
11962 | else | |
11963 | { | |
11964 | if (!attr_form_is_block (attr)) | |
11965 | error (_("Dwarf Error: DIE at 0x%x referenced in module %s " | |
11966 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), | |
11967 | offset, per_cu->cu->objfile->name); | |
11968 | ||
11969 | retval.data = DW_BLOCK (attr)->data; | |
11970 | retval.size = DW_BLOCK (attr)->size; | |
11971 | } | |
11972 | retval.per_cu = cu->per_cu; | |
11973 | return retval; | |
348e048f DE |
11974 | } |
11975 | ||
11976 | /* Follow the signature attribute ATTR in SRC_DIE. | |
11977 | On entry *REF_CU is the CU of SRC_DIE. | |
11978 | On exit *REF_CU is the CU of the result. */ | |
11979 | ||
11980 | static struct die_info * | |
11981 | follow_die_sig (struct die_info *src_die, struct attribute *attr, | |
11982 | struct dwarf2_cu **ref_cu) | |
11983 | { | |
11984 | struct objfile *objfile = (*ref_cu)->objfile; | |
11985 | struct die_info temp_die; | |
11986 | struct signatured_type *sig_type = DW_SIGNATURED_TYPE (attr); | |
11987 | struct dwarf2_cu *sig_cu; | |
11988 | struct die_info *die; | |
11989 | ||
11990 | /* sig_type will be NULL if the signatured type is missing from | |
11991 | the debug info. */ | |
11992 | if (sig_type == NULL) | |
11993 | error (_("Dwarf Error: Cannot find signatured DIE referenced from DIE " | |
11994 | "at 0x%x [in module %s]"), | |
11995 | src_die->offset, objfile->name); | |
11996 | ||
11997 | /* If necessary, add it to the queue and load its DIEs. */ | |
11998 | ||
11999 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu)) | |
12000 | read_signatured_type (objfile, sig_type); | |
12001 | ||
12002 | gdb_assert (sig_type->per_cu.cu != NULL); | |
12003 | ||
12004 | sig_cu = sig_type->per_cu.cu; | |
12005 | temp_die.offset = sig_cu->header.offset + sig_type->type_offset; | |
12006 | die = htab_find_with_hash (sig_cu->die_hash, &temp_die, temp_die.offset); | |
12007 | if (die) | |
12008 | { | |
12009 | *ref_cu = sig_cu; | |
12010 | return die; | |
12011 | } | |
12012 | ||
12013 | error (_("Dwarf Error: Cannot find signatured DIE at 0x%x referenced from DIE " | |
12014 | "at 0x%x [in module %s]"), | |
12015 | sig_type->type_offset, src_die->offset, objfile->name); | |
12016 | } | |
12017 | ||
12018 | /* Given an offset of a signatured type, return its signatured_type. */ | |
12019 | ||
12020 | static struct signatured_type * | |
12021 | lookup_signatured_type_at_offset (struct objfile *objfile, unsigned int offset) | |
12022 | { | |
12023 | gdb_byte *info_ptr = dwarf2_per_objfile->types.buffer + offset; | |
12024 | unsigned int length, initial_length_size; | |
12025 | unsigned int sig_offset; | |
12026 | struct signatured_type find_entry, *type_sig; | |
12027 | ||
12028 | length = read_initial_length (objfile->obfd, info_ptr, &initial_length_size); | |
12029 | sig_offset = (initial_length_size | |
12030 | + 2 /*version*/ | |
12031 | + (initial_length_size == 4 ? 4 : 8) /*debug_abbrev_offset*/ | |
12032 | + 1 /*address_size*/); | |
12033 | find_entry.signature = bfd_get_64 (objfile->obfd, info_ptr + sig_offset); | |
12034 | type_sig = htab_find (dwarf2_per_objfile->signatured_types, &find_entry); | |
12035 | ||
12036 | /* This is only used to lookup previously recorded types. | |
12037 | If we didn't find it, it's our bug. */ | |
12038 | gdb_assert (type_sig != NULL); | |
12039 | gdb_assert (offset == type_sig->offset); | |
12040 | ||
12041 | return type_sig; | |
12042 | } | |
12043 | ||
12044 | /* Read in signatured type at OFFSET and build its CU and die(s). */ | |
12045 | ||
12046 | static void | |
12047 | read_signatured_type_at_offset (struct objfile *objfile, | |
12048 | unsigned int offset) | |
12049 | { | |
12050 | struct signatured_type *type_sig; | |
12051 | ||
be391dca TT |
12052 | dwarf2_read_section (objfile, &dwarf2_per_objfile->types); |
12053 | ||
348e048f DE |
12054 | /* We have the section offset, but we need the signature to do the |
12055 | hash table lookup. */ | |
12056 | type_sig = lookup_signatured_type_at_offset (objfile, offset); | |
12057 | ||
12058 | gdb_assert (type_sig->per_cu.cu == NULL); | |
12059 | ||
12060 | read_signatured_type (objfile, type_sig); | |
12061 | ||
12062 | gdb_assert (type_sig->per_cu.cu != NULL); | |
12063 | } | |
12064 | ||
12065 | /* Read in a signatured type and build its CU and DIEs. */ | |
12066 | ||
12067 | static void | |
12068 | read_signatured_type (struct objfile *objfile, | |
12069 | struct signatured_type *type_sig) | |
12070 | { | |
12071 | gdb_byte *types_ptr = dwarf2_per_objfile->types.buffer + type_sig->offset; | |
12072 | struct die_reader_specs reader_specs; | |
12073 | struct dwarf2_cu *cu; | |
12074 | ULONGEST signature; | |
12075 | struct cleanup *back_to, *free_cu_cleanup; | |
12076 | struct attribute *attr; | |
12077 | ||
12078 | gdb_assert (type_sig->per_cu.cu == NULL); | |
12079 | ||
12080 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
12081 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
12082 | obstack_init (&cu->comp_unit_obstack); | |
12083 | cu->objfile = objfile; | |
12084 | type_sig->per_cu.cu = cu; | |
12085 | cu->per_cu = &type_sig->per_cu; | |
12086 | ||
12087 | /* If an error occurs while loading, release our storage. */ | |
12088 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
12089 | ||
12090 | types_ptr = read_type_comp_unit_head (&cu->header, &signature, | |
12091 | types_ptr, objfile->obfd); | |
12092 | gdb_assert (signature == type_sig->signature); | |
12093 | ||
12094 | cu->die_hash | |
12095 | = htab_create_alloc_ex (cu->header.length / 12, | |
12096 | die_hash, | |
12097 | die_eq, | |
12098 | NULL, | |
12099 | &cu->comp_unit_obstack, | |
12100 | hashtab_obstack_allocate, | |
12101 | dummy_obstack_deallocate); | |
12102 | ||
12103 | dwarf2_read_abbrevs (cu->objfile->obfd, cu); | |
12104 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
12105 | ||
12106 | init_cu_die_reader (&reader_specs, cu); | |
12107 | ||
12108 | cu->dies = read_die_and_children (&reader_specs, types_ptr, &types_ptr, | |
12109 | NULL /*parent*/); | |
12110 | ||
12111 | /* We try not to read any attributes in this function, because not | |
12112 | all objfiles needed for references have been loaded yet, and symbol | |
12113 | table processing isn't initialized. But we have to set the CU language, | |
12114 | or we won't be able to build types correctly. */ | |
12115 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
12116 | if (attr) | |
12117 | set_cu_language (DW_UNSND (attr), cu); | |
12118 | else | |
12119 | set_cu_language (language_minimal, cu); | |
12120 | ||
12121 | do_cleanups (back_to); | |
12122 | ||
12123 | /* We've successfully allocated this compilation unit. Let our caller | |
12124 | clean it up when finished with it. */ | |
12125 | discard_cleanups (free_cu_cleanup); | |
12126 | ||
12127 | type_sig->per_cu.cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
12128 | dwarf2_per_objfile->read_in_chain = &type_sig->per_cu; | |
c906108c SS |
12129 | } |
12130 | ||
c906108c SS |
12131 | /* Decode simple location descriptions. |
12132 | Given a pointer to a dwarf block that defines a location, compute | |
12133 | the location and return the value. | |
12134 | ||
4cecd739 DJ |
12135 | NOTE drow/2003-11-18: This function is called in two situations |
12136 | now: for the address of static or global variables (partial symbols | |
12137 | only) and for offsets into structures which are expected to be | |
12138 | (more or less) constant. The partial symbol case should go away, | |
12139 | and only the constant case should remain. That will let this | |
12140 | function complain more accurately. A few special modes are allowed | |
12141 | without complaint for global variables (for instance, global | |
12142 | register values and thread-local values). | |
c906108c SS |
12143 | |
12144 | A location description containing no operations indicates that the | |
4cecd739 | 12145 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
12146 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
12147 | callers will only want a very basic result and this can become a | |
12148 | complaint. | |
c906108c | 12149 | |
c906108c SS |
12150 | Note that stack[0] is unused except as a default error return. |
12151 | Note that stack overflow is not yet handled. */ | |
12152 | ||
12153 | static CORE_ADDR | |
e7c27a73 | 12154 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 12155 | { |
e7c27a73 | 12156 | struct objfile *objfile = cu->objfile; |
c906108c SS |
12157 | int i; |
12158 | int size = blk->size; | |
fe1b8b76 | 12159 | gdb_byte *data = blk->data; |
c906108c SS |
12160 | CORE_ADDR stack[64]; |
12161 | int stacki; | |
12162 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 12163 | gdb_byte op; |
c906108c SS |
12164 | |
12165 | i = 0; | |
12166 | stacki = 0; | |
12167 | stack[stacki] = 0; | |
c906108c SS |
12168 | |
12169 | while (i < size) | |
12170 | { | |
c906108c SS |
12171 | op = data[i++]; |
12172 | switch (op) | |
12173 | { | |
f1bea926 JM |
12174 | case DW_OP_lit0: |
12175 | case DW_OP_lit1: | |
12176 | case DW_OP_lit2: | |
12177 | case DW_OP_lit3: | |
12178 | case DW_OP_lit4: | |
12179 | case DW_OP_lit5: | |
12180 | case DW_OP_lit6: | |
12181 | case DW_OP_lit7: | |
12182 | case DW_OP_lit8: | |
12183 | case DW_OP_lit9: | |
12184 | case DW_OP_lit10: | |
12185 | case DW_OP_lit11: | |
12186 | case DW_OP_lit12: | |
12187 | case DW_OP_lit13: | |
12188 | case DW_OP_lit14: | |
12189 | case DW_OP_lit15: | |
12190 | case DW_OP_lit16: | |
12191 | case DW_OP_lit17: | |
12192 | case DW_OP_lit18: | |
12193 | case DW_OP_lit19: | |
12194 | case DW_OP_lit20: | |
12195 | case DW_OP_lit21: | |
12196 | case DW_OP_lit22: | |
12197 | case DW_OP_lit23: | |
12198 | case DW_OP_lit24: | |
12199 | case DW_OP_lit25: | |
12200 | case DW_OP_lit26: | |
12201 | case DW_OP_lit27: | |
12202 | case DW_OP_lit28: | |
12203 | case DW_OP_lit29: | |
12204 | case DW_OP_lit30: | |
12205 | case DW_OP_lit31: | |
12206 | stack[++stacki] = op - DW_OP_lit0; | |
12207 | break; | |
12208 | ||
c906108c SS |
12209 | case DW_OP_reg0: |
12210 | case DW_OP_reg1: | |
12211 | case DW_OP_reg2: | |
12212 | case DW_OP_reg3: | |
12213 | case DW_OP_reg4: | |
12214 | case DW_OP_reg5: | |
12215 | case DW_OP_reg6: | |
12216 | case DW_OP_reg7: | |
12217 | case DW_OP_reg8: | |
12218 | case DW_OP_reg9: | |
12219 | case DW_OP_reg10: | |
12220 | case DW_OP_reg11: | |
12221 | case DW_OP_reg12: | |
12222 | case DW_OP_reg13: | |
12223 | case DW_OP_reg14: | |
12224 | case DW_OP_reg15: | |
12225 | case DW_OP_reg16: | |
12226 | case DW_OP_reg17: | |
12227 | case DW_OP_reg18: | |
12228 | case DW_OP_reg19: | |
12229 | case DW_OP_reg20: | |
12230 | case DW_OP_reg21: | |
12231 | case DW_OP_reg22: | |
12232 | case DW_OP_reg23: | |
12233 | case DW_OP_reg24: | |
12234 | case DW_OP_reg25: | |
12235 | case DW_OP_reg26: | |
12236 | case DW_OP_reg27: | |
12237 | case DW_OP_reg28: | |
12238 | case DW_OP_reg29: | |
12239 | case DW_OP_reg30: | |
12240 | case DW_OP_reg31: | |
c906108c | 12241 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
12242 | if (i < size) |
12243 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
12244 | break; |
12245 | ||
12246 | case DW_OP_regx: | |
c906108c SS |
12247 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
12248 | i += bytes_read; | |
c906108c | 12249 | stack[++stacki] = unsnd; |
4cecd739 DJ |
12250 | if (i < size) |
12251 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
12252 | break; |
12253 | ||
12254 | case DW_OP_addr: | |
107d2387 | 12255 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 12256 | cu, &bytes_read); |
107d2387 | 12257 | i += bytes_read; |
c906108c SS |
12258 | break; |
12259 | ||
12260 | case DW_OP_const1u: | |
12261 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
12262 | i += 1; | |
12263 | break; | |
12264 | ||
12265 | case DW_OP_const1s: | |
12266 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
12267 | i += 1; | |
12268 | break; | |
12269 | ||
12270 | case DW_OP_const2u: | |
12271 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
12272 | i += 2; | |
12273 | break; | |
12274 | ||
12275 | case DW_OP_const2s: | |
12276 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
12277 | i += 2; | |
12278 | break; | |
12279 | ||
12280 | case DW_OP_const4u: | |
12281 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
12282 | i += 4; | |
12283 | break; | |
12284 | ||
12285 | case DW_OP_const4s: | |
12286 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
12287 | i += 4; | |
12288 | break; | |
12289 | ||
12290 | case DW_OP_constu: | |
12291 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 12292 | &bytes_read); |
c906108c SS |
12293 | i += bytes_read; |
12294 | break; | |
12295 | ||
12296 | case DW_OP_consts: | |
12297 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
12298 | i += bytes_read; | |
12299 | break; | |
12300 | ||
f1bea926 JM |
12301 | case DW_OP_dup: |
12302 | stack[stacki + 1] = stack[stacki]; | |
12303 | stacki++; | |
12304 | break; | |
12305 | ||
c906108c SS |
12306 | case DW_OP_plus: |
12307 | stack[stacki - 1] += stack[stacki]; | |
12308 | stacki--; | |
12309 | break; | |
12310 | ||
12311 | case DW_OP_plus_uconst: | |
12312 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
12313 | i += bytes_read; | |
12314 | break; | |
12315 | ||
12316 | case DW_OP_minus: | |
f1bea926 | 12317 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
12318 | stacki--; |
12319 | break; | |
12320 | ||
7a292a7a | 12321 | case DW_OP_deref: |
7a292a7a | 12322 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
12323 | this using GDB's address_class enum. This is valid for partial |
12324 | global symbols, although the variable's address will be bogus | |
12325 | in the psymtab. */ | |
7a292a7a | 12326 | if (i < size) |
4d3c2250 | 12327 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
12328 | break; |
12329 | ||
9d774e44 | 12330 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
12331 | /* The top of the stack has the offset from the beginning |
12332 | of the thread control block at which the variable is located. */ | |
12333 | /* Nothing should follow this operator, so the top of stack would | |
12334 | be returned. */ | |
4cecd739 DJ |
12335 | /* This is valid for partial global symbols, but the variable's |
12336 | address will be bogus in the psymtab. */ | |
9d774e44 | 12337 | if (i < size) |
4d3c2250 | 12338 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
12339 | break; |
12340 | ||
42be36b3 CT |
12341 | case DW_OP_GNU_uninit: |
12342 | break; | |
12343 | ||
c906108c | 12344 | default: |
e2e0b3e5 | 12345 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
9eae7c52 | 12346 | dwarf_stack_op_name (op, 1)); |
c906108c SS |
12347 | return (stack[stacki]); |
12348 | } | |
12349 | } | |
12350 | return (stack[stacki]); | |
12351 | } | |
12352 | ||
12353 | /* memory allocation interface */ | |
12354 | ||
c906108c | 12355 | static struct dwarf_block * |
7b5a2f43 | 12356 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
12357 | { |
12358 | struct dwarf_block *blk; | |
12359 | ||
12360 | blk = (struct dwarf_block *) | |
7b5a2f43 | 12361 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
12362 | return (blk); |
12363 | } | |
12364 | ||
12365 | static struct abbrev_info * | |
f3dd6933 | 12366 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
12367 | { |
12368 | struct abbrev_info *abbrev; | |
12369 | ||
f3dd6933 DJ |
12370 | abbrev = (struct abbrev_info *) |
12371 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
12372 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
12373 | return (abbrev); | |
12374 | } | |
12375 | ||
12376 | static struct die_info * | |
b60c80d6 | 12377 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
12378 | { |
12379 | struct die_info *die; | |
b60c80d6 DJ |
12380 | size_t size = sizeof (struct die_info); |
12381 | ||
12382 | if (num_attrs > 1) | |
12383 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 12384 | |
b60c80d6 | 12385 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
12386 | memset (die, 0, sizeof (struct die_info)); |
12387 | return (die); | |
12388 | } | |
2e276125 JB |
12389 | |
12390 | \f | |
12391 | /* Macro support. */ | |
12392 | ||
12393 | ||
12394 | /* Return the full name of file number I in *LH's file name table. | |
12395 | Use COMP_DIR as the name of the current directory of the | |
12396 | compilation. The result is allocated using xmalloc; the caller is | |
12397 | responsible for freeing it. */ | |
12398 | static char * | |
12399 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
12400 | { | |
6a83a1e6 EZ |
12401 | /* Is the file number a valid index into the line header's file name |
12402 | table? Remember that file numbers start with one, not zero. */ | |
12403 | if (1 <= file && file <= lh->num_file_names) | |
12404 | { | |
12405 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6e70227d | 12406 | |
6a83a1e6 EZ |
12407 | if (IS_ABSOLUTE_PATH (fe->name)) |
12408 | return xstrdup (fe->name); | |
12409 | else | |
12410 | { | |
12411 | const char *dir; | |
12412 | int dir_len; | |
12413 | char *full_name; | |
12414 | ||
12415 | if (fe->dir_index) | |
12416 | dir = lh->include_dirs[fe->dir_index - 1]; | |
12417 | else | |
12418 | dir = comp_dir; | |
12419 | ||
12420 | if (dir) | |
12421 | { | |
12422 | dir_len = strlen (dir); | |
12423 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
12424 | strcpy (full_name, dir); | |
12425 | full_name[dir_len] = '/'; | |
12426 | strcpy (full_name + dir_len + 1, fe->name); | |
12427 | return full_name; | |
12428 | } | |
12429 | else | |
12430 | return xstrdup (fe->name); | |
12431 | } | |
12432 | } | |
2e276125 JB |
12433 | else |
12434 | { | |
6a83a1e6 EZ |
12435 | /* The compiler produced a bogus file number. We can at least |
12436 | record the macro definitions made in the file, even if we | |
12437 | won't be able to find the file by name. */ | |
12438 | char fake_name[80]; | |
9a619af0 | 12439 | |
6a83a1e6 | 12440 | sprintf (fake_name, "<bad macro file number %d>", file); |
2e276125 | 12441 | |
6e70227d | 12442 | complaint (&symfile_complaints, |
6a83a1e6 EZ |
12443 | _("bad file number in macro information (%d)"), |
12444 | file); | |
2e276125 | 12445 | |
6a83a1e6 | 12446 | return xstrdup (fake_name); |
2e276125 JB |
12447 | } |
12448 | } | |
12449 | ||
12450 | ||
12451 | static struct macro_source_file * | |
12452 | macro_start_file (int file, int line, | |
12453 | struct macro_source_file *current_file, | |
12454 | const char *comp_dir, | |
12455 | struct line_header *lh, struct objfile *objfile) | |
12456 | { | |
12457 | /* The full name of this source file. */ | |
12458 | char *full_name = file_full_name (file, lh, comp_dir); | |
12459 | ||
12460 | /* We don't create a macro table for this compilation unit | |
12461 | at all until we actually get a filename. */ | |
12462 | if (! pending_macros) | |
4a146b47 | 12463 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 12464 | objfile->macro_cache); |
2e276125 JB |
12465 | |
12466 | if (! current_file) | |
12467 | /* If we have no current file, then this must be the start_file | |
12468 | directive for the compilation unit's main source file. */ | |
12469 | current_file = macro_set_main (pending_macros, full_name); | |
12470 | else | |
12471 | current_file = macro_include (current_file, line, full_name); | |
12472 | ||
12473 | xfree (full_name); | |
6e70227d | 12474 | |
2e276125 JB |
12475 | return current_file; |
12476 | } | |
12477 | ||
12478 | ||
12479 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
12480 | followed by a null byte. */ | |
12481 | static char * | |
12482 | copy_string (const char *buf, int len) | |
12483 | { | |
12484 | char *s = xmalloc (len + 1); | |
9a619af0 | 12485 | |
2e276125 JB |
12486 | memcpy (s, buf, len); |
12487 | s[len] = '\0'; | |
2e276125 JB |
12488 | return s; |
12489 | } | |
12490 | ||
12491 | ||
12492 | static const char * | |
12493 | consume_improper_spaces (const char *p, const char *body) | |
12494 | { | |
12495 | if (*p == ' ') | |
12496 | { | |
4d3c2250 | 12497 | complaint (&symfile_complaints, |
e2e0b3e5 | 12498 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 12499 | body); |
2e276125 JB |
12500 | |
12501 | while (*p == ' ') | |
12502 | p++; | |
12503 | } | |
12504 | ||
12505 | return p; | |
12506 | } | |
12507 | ||
12508 | ||
12509 | static void | |
12510 | parse_macro_definition (struct macro_source_file *file, int line, | |
12511 | const char *body) | |
12512 | { | |
12513 | const char *p; | |
12514 | ||
12515 | /* The body string takes one of two forms. For object-like macro | |
12516 | definitions, it should be: | |
12517 | ||
12518 | <macro name> " " <definition> | |
12519 | ||
12520 | For function-like macro definitions, it should be: | |
12521 | ||
12522 | <macro name> "() " <definition> | |
12523 | or | |
12524 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
12525 | ||
12526 | Spaces may appear only where explicitly indicated, and in the | |
12527 | <definition>. | |
12528 | ||
12529 | The Dwarf 2 spec says that an object-like macro's name is always | |
12530 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 12531 | the space when the macro's definition is the empty string. |
2e276125 JB |
12532 | |
12533 | The Dwarf 2 spec says that there should be no spaces between the | |
12534 | formal arguments in a function-like macro's formal argument list, | |
12535 | but versions of GCC around March 2002 include spaces after the | |
12536 | commas. */ | |
12537 | ||
12538 | ||
12539 | /* Find the extent of the macro name. The macro name is terminated | |
12540 | by either a space or null character (for an object-like macro) or | |
12541 | an opening paren (for a function-like macro). */ | |
12542 | for (p = body; *p; p++) | |
12543 | if (*p == ' ' || *p == '(') | |
12544 | break; | |
12545 | ||
12546 | if (*p == ' ' || *p == '\0') | |
12547 | { | |
12548 | /* It's an object-like macro. */ | |
12549 | int name_len = p - body; | |
12550 | char *name = copy_string (body, name_len); | |
12551 | const char *replacement; | |
12552 | ||
12553 | if (*p == ' ') | |
12554 | replacement = body + name_len + 1; | |
12555 | else | |
12556 | { | |
4d3c2250 | 12557 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
12558 | replacement = body + name_len; |
12559 | } | |
6e70227d | 12560 | |
2e276125 JB |
12561 | macro_define_object (file, line, name, replacement); |
12562 | ||
12563 | xfree (name); | |
12564 | } | |
12565 | else if (*p == '(') | |
12566 | { | |
12567 | /* It's a function-like macro. */ | |
12568 | char *name = copy_string (body, p - body); | |
12569 | int argc = 0; | |
12570 | int argv_size = 1; | |
12571 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
12572 | ||
12573 | p++; | |
12574 | ||
12575 | p = consume_improper_spaces (p, body); | |
12576 | ||
12577 | /* Parse the formal argument list. */ | |
12578 | while (*p && *p != ')') | |
12579 | { | |
12580 | /* Find the extent of the current argument name. */ | |
12581 | const char *arg_start = p; | |
12582 | ||
12583 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
12584 | p++; | |
12585 | ||
12586 | if (! *p || p == arg_start) | |
4d3c2250 | 12587 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
12588 | else |
12589 | { | |
12590 | /* Make sure argv has room for the new argument. */ | |
12591 | if (argc >= argv_size) | |
12592 | { | |
12593 | argv_size *= 2; | |
12594 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
12595 | } | |
12596 | ||
12597 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
12598 | } | |
12599 | ||
12600 | p = consume_improper_spaces (p, body); | |
12601 | ||
12602 | /* Consume the comma, if present. */ | |
12603 | if (*p == ',') | |
12604 | { | |
12605 | p++; | |
12606 | ||
12607 | p = consume_improper_spaces (p, body); | |
12608 | } | |
12609 | } | |
12610 | ||
12611 | if (*p == ')') | |
12612 | { | |
12613 | p++; | |
12614 | ||
12615 | if (*p == ' ') | |
12616 | /* Perfectly formed definition, no complaints. */ | |
12617 | macro_define_function (file, line, name, | |
6e70227d | 12618 | argc, (const char **) argv, |
2e276125 JB |
12619 | p + 1); |
12620 | else if (*p == '\0') | |
12621 | { | |
12622 | /* Complain, but do define it. */ | |
4d3c2250 | 12623 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 12624 | macro_define_function (file, line, name, |
6e70227d | 12625 | argc, (const char **) argv, |
2e276125 JB |
12626 | p); |
12627 | } | |
12628 | else | |
12629 | /* Just complain. */ | |
4d3c2250 | 12630 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
12631 | } |
12632 | else | |
12633 | /* Just complain. */ | |
4d3c2250 | 12634 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
12635 | |
12636 | xfree (name); | |
12637 | { | |
12638 | int i; | |
12639 | ||
12640 | for (i = 0; i < argc; i++) | |
12641 | xfree (argv[i]); | |
12642 | } | |
12643 | xfree (argv); | |
12644 | } | |
12645 | else | |
4d3c2250 | 12646 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
12647 | } |
12648 | ||
12649 | ||
12650 | static void | |
12651 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
12652 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 12653 | struct dwarf2_cu *cu) |
2e276125 | 12654 | { |
fe1b8b76 | 12655 | gdb_byte *mac_ptr, *mac_end; |
2e276125 | 12656 | struct macro_source_file *current_file = 0; |
757a13d0 JK |
12657 | enum dwarf_macinfo_record_type macinfo_type; |
12658 | int at_commandline; | |
2e276125 | 12659 | |
be391dca TT |
12660 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
12661 | &dwarf2_per_objfile->macinfo); | |
dce234bc | 12662 | if (dwarf2_per_objfile->macinfo.buffer == NULL) |
2e276125 | 12663 | { |
e2e0b3e5 | 12664 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
12665 | return; |
12666 | } | |
12667 | ||
757a13d0 JK |
12668 | /* First pass: Find the name of the base filename. |
12669 | This filename is needed in order to process all macros whose definition | |
12670 | (or undefinition) comes from the command line. These macros are defined | |
12671 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
12672 | associated to the base file. | |
12673 | ||
12674 | To determine the base file name, we scan the macro definitions until we | |
12675 | reach the first DW_MACINFO_start_file entry. We then initialize | |
12676 | CURRENT_FILE accordingly so that any macro definition found before the | |
12677 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
12678 | ||
dce234bc PP |
12679 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
12680 | mac_end = dwarf2_per_objfile->macinfo.buffer | |
12681 | + dwarf2_per_objfile->macinfo.size; | |
2e276125 | 12682 | |
757a13d0 | 12683 | do |
2e276125 | 12684 | { |
2e276125 JB |
12685 | /* Do we at least have room for a macinfo type byte? */ |
12686 | if (mac_ptr >= mac_end) | |
12687 | { | |
757a13d0 JK |
12688 | /* Complaint is printed during the second pass as GDB will probably |
12689 | stop the first pass earlier upon finding DW_MACINFO_start_file. */ | |
12690 | break; | |
2e276125 JB |
12691 | } |
12692 | ||
12693 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
12694 | mac_ptr++; | |
12695 | ||
12696 | switch (macinfo_type) | |
12697 | { | |
12698 | /* A zero macinfo type indicates the end of the macro | |
12699 | information. */ | |
12700 | case 0: | |
757a13d0 JK |
12701 | break; |
12702 | ||
12703 | case DW_MACINFO_define: | |
12704 | case DW_MACINFO_undef: | |
12705 | /* Only skip the data by MAC_PTR. */ | |
12706 | { | |
12707 | unsigned int bytes_read; | |
12708 | ||
12709 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
12710 | mac_ptr += bytes_read; | |
12711 | read_string (abfd, mac_ptr, &bytes_read); | |
12712 | mac_ptr += bytes_read; | |
12713 | } | |
12714 | break; | |
12715 | ||
12716 | case DW_MACINFO_start_file: | |
12717 | { | |
12718 | unsigned int bytes_read; | |
12719 | int line, file; | |
12720 | ||
12721 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
12722 | mac_ptr += bytes_read; | |
12723 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
12724 | mac_ptr += bytes_read; | |
12725 | ||
12726 | current_file = macro_start_file (file, line, current_file, comp_dir, | |
12727 | lh, cu->objfile); | |
12728 | } | |
12729 | break; | |
12730 | ||
12731 | case DW_MACINFO_end_file: | |
12732 | /* No data to skip by MAC_PTR. */ | |
12733 | break; | |
12734 | ||
12735 | case DW_MACINFO_vendor_ext: | |
12736 | /* Only skip the data by MAC_PTR. */ | |
12737 | { | |
12738 | unsigned int bytes_read; | |
12739 | ||
12740 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
12741 | mac_ptr += bytes_read; | |
12742 | read_string (abfd, mac_ptr, &bytes_read); | |
12743 | mac_ptr += bytes_read; | |
12744 | } | |
12745 | break; | |
12746 | ||
12747 | default: | |
12748 | break; | |
12749 | } | |
12750 | } while (macinfo_type != 0 && current_file == NULL); | |
12751 | ||
12752 | /* Second pass: Process all entries. | |
12753 | ||
12754 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
12755 | command-line macro definitions/undefinitions. This flag is unset when we | |
12756 | reach the first DW_MACINFO_start_file entry. */ | |
12757 | ||
dce234bc | 12758 | mac_ptr = dwarf2_per_objfile->macinfo.buffer + offset; |
757a13d0 JK |
12759 | |
12760 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
12761 | GDB is still reading the definitions from command line. First | |
12762 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
12763 | to create CURRENT_FILE for the main source holding also the command line | |
12764 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
12765 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
12766 | ||
12767 | at_commandline = 1; | |
12768 | ||
12769 | do | |
12770 | { | |
12771 | /* Do we at least have room for a macinfo type byte? */ | |
12772 | if (mac_ptr >= mac_end) | |
12773 | { | |
12774 | dwarf2_macros_too_long_complaint (); | |
12775 | break; | |
12776 | } | |
12777 | ||
12778 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
12779 | mac_ptr++; | |
12780 | ||
12781 | switch (macinfo_type) | |
12782 | { | |
12783 | /* A zero macinfo type indicates the end of the macro | |
12784 | information. */ | |
12785 | case 0: | |
12786 | break; | |
2e276125 JB |
12787 | |
12788 | case DW_MACINFO_define: | |
12789 | case DW_MACINFO_undef: | |
12790 | { | |
891d2f0b | 12791 | unsigned int bytes_read; |
2e276125 JB |
12792 | int line; |
12793 | char *body; | |
12794 | ||
12795 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
12796 | mac_ptr += bytes_read; | |
12797 | body = read_string (abfd, mac_ptr, &bytes_read); | |
12798 | mac_ptr += bytes_read; | |
12799 | ||
12800 | if (! current_file) | |
757a13d0 JK |
12801 | { |
12802 | /* DWARF violation as no main source is present. */ | |
12803 | complaint (&symfile_complaints, | |
12804 | _("debug info with no main source gives macro %s " | |
12805 | "on line %d: %s"), | |
6e70227d DE |
12806 | macinfo_type == DW_MACINFO_define ? |
12807 | _("definition") : | |
905e0470 PM |
12808 | macinfo_type == DW_MACINFO_undef ? |
12809 | _("undefinition") : | |
12810 | _("something-or-other"), line, body); | |
757a13d0 JK |
12811 | break; |
12812 | } | |
12813 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) | |
4d3c2250 | 12814 | complaint (&symfile_complaints, |
757a13d0 JK |
12815 | _("debug info gives %s macro %s with %s line %d: %s"), |
12816 | at_commandline ? _("command-line") : _("in-file"), | |
905e0470 | 12817 | macinfo_type == DW_MACINFO_define ? |
6e70227d | 12818 | _("definition") : |
905e0470 PM |
12819 | macinfo_type == DW_MACINFO_undef ? |
12820 | _("undefinition") : | |
12821 | _("something-or-other"), | |
757a13d0 JK |
12822 | line == 0 ? _("zero") : _("non-zero"), line, body); |
12823 | ||
12824 | if (macinfo_type == DW_MACINFO_define) | |
12825 | parse_macro_definition (current_file, line, body); | |
12826 | else if (macinfo_type == DW_MACINFO_undef) | |
12827 | macro_undef (current_file, line, body); | |
2e276125 JB |
12828 | } |
12829 | break; | |
12830 | ||
12831 | case DW_MACINFO_start_file: | |
12832 | { | |
891d2f0b | 12833 | unsigned int bytes_read; |
2e276125 JB |
12834 | int line, file; |
12835 | ||
12836 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
12837 | mac_ptr += bytes_read; | |
12838 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
12839 | mac_ptr += bytes_read; | |
12840 | ||
757a13d0 JK |
12841 | if ((line == 0 && !at_commandline) || (line != 0 && at_commandline)) |
12842 | complaint (&symfile_complaints, | |
12843 | _("debug info gives source %d included " | |
12844 | "from %s at %s line %d"), | |
12845 | file, at_commandline ? _("command-line") : _("file"), | |
12846 | line == 0 ? _("zero") : _("non-zero"), line); | |
12847 | ||
12848 | if (at_commandline) | |
12849 | { | |
12850 | /* This DW_MACINFO_start_file was executed in the pass one. */ | |
12851 | at_commandline = 0; | |
12852 | } | |
12853 | else | |
12854 | current_file = macro_start_file (file, line, | |
12855 | current_file, comp_dir, | |
12856 | lh, cu->objfile); | |
2e276125 JB |
12857 | } |
12858 | break; | |
12859 | ||
12860 | case DW_MACINFO_end_file: | |
12861 | if (! current_file) | |
4d3c2250 | 12862 | complaint (&symfile_complaints, |
e2e0b3e5 | 12863 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
12864 | else |
12865 | { | |
12866 | current_file = current_file->included_by; | |
12867 | if (! current_file) | |
12868 | { | |
12869 | enum dwarf_macinfo_record_type next_type; | |
12870 | ||
12871 | /* GCC circa March 2002 doesn't produce the zero | |
12872 | type byte marking the end of the compilation | |
12873 | unit. Complain if it's not there, but exit no | |
12874 | matter what. */ | |
12875 | ||
12876 | /* Do we at least have room for a macinfo type byte? */ | |
12877 | if (mac_ptr >= mac_end) | |
12878 | { | |
4d3c2250 | 12879 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
12880 | return; |
12881 | } | |
12882 | ||
12883 | /* We don't increment mac_ptr here, so this is just | |
12884 | a look-ahead. */ | |
12885 | next_type = read_1_byte (abfd, mac_ptr); | |
12886 | if (next_type != 0) | |
4d3c2250 | 12887 | complaint (&symfile_complaints, |
e2e0b3e5 | 12888 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
12889 | |
12890 | return; | |
12891 | } | |
12892 | } | |
12893 | break; | |
12894 | ||
12895 | case DW_MACINFO_vendor_ext: | |
12896 | { | |
891d2f0b | 12897 | unsigned int bytes_read; |
2e276125 JB |
12898 | int constant; |
12899 | char *string; | |
12900 | ||
12901 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
12902 | mac_ptr += bytes_read; | |
12903 | string = read_string (abfd, mac_ptr, &bytes_read); | |
12904 | mac_ptr += bytes_read; | |
12905 | ||
12906 | /* We don't recognize any vendor extensions. */ | |
12907 | } | |
12908 | break; | |
12909 | } | |
757a13d0 | 12910 | } while (macinfo_type != 0); |
2e276125 | 12911 | } |
8e19ed76 PS |
12912 | |
12913 | /* Check if the attribute's form is a DW_FORM_block* | |
12914 | if so return true else false. */ | |
12915 | static int | |
12916 | attr_form_is_block (struct attribute *attr) | |
12917 | { | |
12918 | return (attr == NULL ? 0 : | |
12919 | attr->form == DW_FORM_block1 | |
12920 | || attr->form == DW_FORM_block2 | |
12921 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
12922 | || attr->form == DW_FORM_block |
12923 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 12924 | } |
4c2df51b | 12925 | |
c6a0999f JB |
12926 | /* Return non-zero if ATTR's value is a section offset --- classes |
12927 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
12928 | You may use DW_UNSND (attr) to retrieve such offsets. | |
12929 | ||
12930 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
12931 | may have a value that belongs to more than one of these classes; it | |
12932 | would be ambiguous if we did, because we use the same forms for all | |
12933 | of them. */ | |
3690dd37 JB |
12934 | static int |
12935 | attr_form_is_section_offset (struct attribute *attr) | |
12936 | { | |
12937 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
12938 | || attr->form == DW_FORM_data8 |
12939 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
12940 | } |
12941 | ||
12942 | ||
12943 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
12944 | zero otherwise. When this function returns true, you can apply | |
12945 | dwarf2_get_attr_constant_value to it. | |
12946 | ||
12947 | However, note that for some attributes you must check | |
12948 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
12949 | and DW_FORM_data8 are members of both the constant class, and of | |
12950 | the classes that contain offsets into other debug sections | |
12951 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
12952 | that, if an attribute's can be either a constant or one of the | |
12953 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
12954 | taken as section offsets, not constants. */ | |
12955 | static int | |
12956 | attr_form_is_constant (struct attribute *attr) | |
12957 | { | |
12958 | switch (attr->form) | |
12959 | { | |
12960 | case DW_FORM_sdata: | |
12961 | case DW_FORM_udata: | |
12962 | case DW_FORM_data1: | |
12963 | case DW_FORM_data2: | |
12964 | case DW_FORM_data4: | |
12965 | case DW_FORM_data8: | |
12966 | return 1; | |
12967 | default: | |
12968 | return 0; | |
12969 | } | |
12970 | } | |
12971 | ||
4c2df51b DJ |
12972 | static void |
12973 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 12974 | struct dwarf2_cu *cu) |
4c2df51b | 12975 | { |
3690dd37 | 12976 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
12977 | /* ".debug_loc" may not exist at all, or the offset may be outside |
12978 | the section. If so, fall through to the complaint in the | |
12979 | other branch. */ | |
dce234bc | 12980 | && DW_UNSND (attr) < dwarf2_per_objfile->loc.size) |
4c2df51b | 12981 | { |
0d53c4c4 | 12982 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 12983 | |
4a146b47 | 12984 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 12985 | sizeof (struct dwarf2_loclist_baton)); |
ae0d2f24 UW |
12986 | baton->per_cu = cu->per_cu; |
12987 | gdb_assert (baton->per_cu); | |
4c2df51b | 12988 | |
be391dca TT |
12989 | dwarf2_read_section (dwarf2_per_objfile->objfile, |
12990 | &dwarf2_per_objfile->loc); | |
12991 | ||
0d53c4c4 DJ |
12992 | /* We don't know how long the location list is, but make sure we |
12993 | don't run off the edge of the section. */ | |
dce234bc PP |
12994 | baton->size = dwarf2_per_objfile->loc.size - DW_UNSND (attr); |
12995 | baton->data = dwarf2_per_objfile->loc.buffer + DW_UNSND (attr); | |
d00adf39 DE |
12996 | baton->base_address = cu->base_address; |
12997 | if (cu->base_known == 0) | |
0d53c4c4 | 12998 | complaint (&symfile_complaints, |
e2e0b3e5 | 12999 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 13000 | |
768a979c | 13001 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
13002 | SYMBOL_LOCATION_BATON (sym) = baton; |
13003 | } | |
13004 | else | |
13005 | { | |
13006 | struct dwarf2_locexpr_baton *baton; | |
13007 | ||
4a146b47 | 13008 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 13009 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
13010 | baton->per_cu = cu->per_cu; |
13011 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
13012 | |
13013 | if (attr_form_is_block (attr)) | |
13014 | { | |
13015 | /* Note that we're just copying the block's data pointer | |
13016 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
13017 | info_buffer for SYM's objfile; right now we never release |
13018 | that buffer, but when we do clean up properly this may | |
13019 | need to change. */ | |
0d53c4c4 DJ |
13020 | baton->size = DW_BLOCK (attr)->size; |
13021 | baton->data = DW_BLOCK (attr)->data; | |
13022 | } | |
13023 | else | |
13024 | { | |
13025 | dwarf2_invalid_attrib_class_complaint ("location description", | |
13026 | SYMBOL_NATURAL_NAME (sym)); | |
13027 | baton->size = 0; | |
13028 | baton->data = NULL; | |
13029 | } | |
6e70227d | 13030 | |
768a979c | 13031 | SYMBOL_COMPUTED_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
13032 | SYMBOL_LOCATION_BATON (sym) = baton; |
13033 | } | |
4c2df51b | 13034 | } |
6502dd73 | 13035 | |
9aa1f1e3 TT |
13036 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
13037 | came from a separate debuginfo file, then the master objfile is | |
13038 | returned. */ | |
ae0d2f24 UW |
13039 | |
13040 | struct objfile * | |
13041 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
13042 | { | |
9291a0cd | 13043 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
13044 | |
13045 | /* Return the master objfile, so that we can report and look up the | |
13046 | correct file containing this variable. */ | |
13047 | if (objfile->separate_debug_objfile_backlink) | |
13048 | objfile = objfile->separate_debug_objfile_backlink; | |
13049 | ||
13050 | return objfile; | |
13051 | } | |
13052 | ||
13053 | /* Return the address size given in the compilation unit header for CU. */ | |
13054 | ||
13055 | CORE_ADDR | |
13056 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
13057 | { | |
13058 | if (per_cu->cu) | |
13059 | return per_cu->cu->header.addr_size; | |
13060 | else | |
13061 | { | |
13062 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 13063 | struct objfile *objfile = per_cu->objfile; |
ae0d2f24 UW |
13064 | struct dwarf2_per_objfile *per_objfile |
13065 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
dce234bc | 13066 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; |
ae0d2f24 | 13067 | struct comp_unit_head cu_header; |
9a619af0 | 13068 | |
ae0d2f24 UW |
13069 | memset (&cu_header, 0, sizeof cu_header); |
13070 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
13071 | return cu_header.addr_size; | |
13072 | } | |
13073 | } | |
13074 | ||
9eae7c52 TT |
13075 | /* Return the offset size given in the compilation unit header for CU. */ |
13076 | ||
13077 | int | |
13078 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
13079 | { | |
13080 | if (per_cu->cu) | |
13081 | return per_cu->cu->header.offset_size; | |
13082 | else | |
13083 | { | |
13084 | /* If the CU is not currently read in, we re-read its header. */ | |
9291a0cd | 13085 | struct objfile *objfile = per_cu->objfile; |
9eae7c52 TT |
13086 | struct dwarf2_per_objfile *per_objfile |
13087 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
13088 | gdb_byte *info_ptr = per_objfile->info.buffer + per_cu->offset; | |
13089 | struct comp_unit_head cu_header; | |
13090 | ||
13091 | memset (&cu_header, 0, sizeof cu_header); | |
13092 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
13093 | return cu_header.offset_size; | |
13094 | } | |
13095 | } | |
13096 | ||
9aa1f1e3 TT |
13097 | /* Return the text offset of the CU. The returned offset comes from |
13098 | this CU's objfile. If this objfile came from a separate debuginfo | |
13099 | file, then the offset may be different from the corresponding | |
13100 | offset in the parent objfile. */ | |
13101 | ||
13102 | CORE_ADDR | |
13103 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
13104 | { | |
bb3fa9d0 | 13105 | struct objfile *objfile = per_cu->objfile; |
9aa1f1e3 TT |
13106 | |
13107 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
13108 | } | |
13109 | ||
348e048f DE |
13110 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
13111 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
13112 | |
13113 | static struct dwarf2_per_cu_data * | |
c764a876 | 13114 | dwarf2_find_containing_comp_unit (unsigned int offset, |
ae038cb0 DJ |
13115 | struct objfile *objfile) |
13116 | { | |
13117 | struct dwarf2_per_cu_data *this_cu; | |
13118 | int low, high; | |
13119 | ||
ae038cb0 DJ |
13120 | low = 0; |
13121 | high = dwarf2_per_objfile->n_comp_units - 1; | |
13122 | while (high > low) | |
13123 | { | |
13124 | int mid = low + (high - low) / 2; | |
9a619af0 | 13125 | |
ae038cb0 DJ |
13126 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) |
13127 | high = mid; | |
13128 | else | |
13129 | low = mid + 1; | |
13130 | } | |
13131 | gdb_assert (low == high); | |
13132 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
13133 | { | |
10b3939b | 13134 | if (low == 0) |
8a3fe4f8 AC |
13135 | error (_("Dwarf Error: could not find partial DIE containing " |
13136 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
13137 | (long) offset, bfd_get_filename (objfile->obfd)); |
13138 | ||
ae038cb0 DJ |
13139 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
13140 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
13141 | } | |
13142 | else | |
13143 | { | |
13144 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
13145 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
13146 | && offset >= this_cu->offset + this_cu->length) | |
c764a876 | 13147 | error (_("invalid dwarf2 offset %u"), offset); |
ae038cb0 DJ |
13148 | gdb_assert (offset < this_cu->offset + this_cu->length); |
13149 | return this_cu; | |
13150 | } | |
13151 | } | |
13152 | ||
10b3939b DJ |
13153 | /* Locate the compilation unit from OBJFILE which is located at exactly |
13154 | OFFSET. Raises an error on failure. */ | |
13155 | ||
ae038cb0 | 13156 | static struct dwarf2_per_cu_data * |
c764a876 | 13157 | dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile) |
ae038cb0 DJ |
13158 | { |
13159 | struct dwarf2_per_cu_data *this_cu; | |
9a619af0 | 13160 | |
ae038cb0 DJ |
13161 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); |
13162 | if (this_cu->offset != offset) | |
c764a876 | 13163 | error (_("no compilation unit with offset %u."), offset); |
ae038cb0 DJ |
13164 | return this_cu; |
13165 | } | |
13166 | ||
93311388 DE |
13167 | /* Malloc space for a dwarf2_cu for OBJFILE and initialize it. */ |
13168 | ||
13169 | static struct dwarf2_cu * | |
13170 | alloc_one_comp_unit (struct objfile *objfile) | |
13171 | { | |
13172 | struct dwarf2_cu *cu = xcalloc (1, sizeof (struct dwarf2_cu)); | |
13173 | cu->objfile = objfile; | |
13174 | obstack_init (&cu->comp_unit_obstack); | |
13175 | return cu; | |
13176 | } | |
13177 | ||
ae038cb0 DJ |
13178 | /* Release one cached compilation unit, CU. We unlink it from the tree |
13179 | of compilation units, but we don't remove it from the read_in_chain; | |
93311388 DE |
13180 | the caller is responsible for that. |
13181 | NOTE: DATA is a void * because this function is also used as a | |
13182 | cleanup routine. */ | |
ae038cb0 DJ |
13183 | |
13184 | static void | |
13185 | free_one_comp_unit (void *data) | |
13186 | { | |
13187 | struct dwarf2_cu *cu = data; | |
13188 | ||
13189 | if (cu->per_cu != NULL) | |
13190 | cu->per_cu->cu = NULL; | |
13191 | cu->per_cu = NULL; | |
13192 | ||
13193 | obstack_free (&cu->comp_unit_obstack, NULL); | |
13194 | ||
13195 | xfree (cu); | |
13196 | } | |
13197 | ||
72bf9492 | 13198 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
13199 | when we're finished with it. We can't free the pointer itself, but be |
13200 | sure to unlink it from the cache. Also release any associated storage | |
13201 | and perform cache maintenance. | |
72bf9492 DJ |
13202 | |
13203 | Only used during partial symbol parsing. */ | |
13204 | ||
13205 | static void | |
13206 | free_stack_comp_unit (void *data) | |
13207 | { | |
13208 | struct dwarf2_cu *cu = data; | |
13209 | ||
13210 | obstack_free (&cu->comp_unit_obstack, NULL); | |
13211 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
13212 | |
13213 | if (cu->per_cu != NULL) | |
13214 | { | |
13215 | /* This compilation unit is on the stack in our caller, so we | |
13216 | should not xfree it. Just unlink it. */ | |
13217 | cu->per_cu->cu = NULL; | |
13218 | cu->per_cu = NULL; | |
13219 | ||
13220 | /* If we had a per-cu pointer, then we may have other compilation | |
13221 | units loaded, so age them now. */ | |
13222 | age_cached_comp_units (); | |
13223 | } | |
13224 | } | |
13225 | ||
13226 | /* Free all cached compilation units. */ | |
13227 | ||
13228 | static void | |
13229 | free_cached_comp_units (void *data) | |
13230 | { | |
13231 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
13232 | ||
13233 | per_cu = dwarf2_per_objfile->read_in_chain; | |
13234 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
13235 | while (per_cu != NULL) | |
13236 | { | |
13237 | struct dwarf2_per_cu_data *next_cu; | |
13238 | ||
13239 | next_cu = per_cu->cu->read_in_chain; | |
13240 | ||
13241 | free_one_comp_unit (per_cu->cu); | |
13242 | *last_chain = next_cu; | |
13243 | ||
13244 | per_cu = next_cu; | |
13245 | } | |
13246 | } | |
13247 | ||
13248 | /* Increase the age counter on each cached compilation unit, and free | |
13249 | any that are too old. */ | |
13250 | ||
13251 | static void | |
13252 | age_cached_comp_units (void) | |
13253 | { | |
13254 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
13255 | ||
13256 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
13257 | per_cu = dwarf2_per_objfile->read_in_chain; | |
13258 | while (per_cu != NULL) | |
13259 | { | |
13260 | per_cu->cu->last_used ++; | |
13261 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
13262 | dwarf2_mark (per_cu->cu); | |
13263 | per_cu = per_cu->cu->read_in_chain; | |
13264 | } | |
13265 | ||
13266 | per_cu = dwarf2_per_objfile->read_in_chain; | |
13267 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
13268 | while (per_cu != NULL) | |
13269 | { | |
13270 | struct dwarf2_per_cu_data *next_cu; | |
13271 | ||
13272 | next_cu = per_cu->cu->read_in_chain; | |
13273 | ||
13274 | if (!per_cu->cu->mark) | |
13275 | { | |
13276 | free_one_comp_unit (per_cu->cu); | |
13277 | *last_chain = next_cu; | |
13278 | } | |
13279 | else | |
13280 | last_chain = &per_cu->cu->read_in_chain; | |
13281 | ||
13282 | per_cu = next_cu; | |
13283 | } | |
13284 | } | |
13285 | ||
13286 | /* Remove a single compilation unit from the cache. */ | |
13287 | ||
13288 | static void | |
13289 | free_one_cached_comp_unit (void *target_cu) | |
13290 | { | |
13291 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
13292 | ||
13293 | per_cu = dwarf2_per_objfile->read_in_chain; | |
13294 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
13295 | while (per_cu != NULL) | |
13296 | { | |
13297 | struct dwarf2_per_cu_data *next_cu; | |
13298 | ||
13299 | next_cu = per_cu->cu->read_in_chain; | |
13300 | ||
13301 | if (per_cu->cu == target_cu) | |
13302 | { | |
13303 | free_one_comp_unit (per_cu->cu); | |
13304 | *last_chain = next_cu; | |
13305 | break; | |
13306 | } | |
13307 | else | |
13308 | last_chain = &per_cu->cu->read_in_chain; | |
13309 | ||
13310 | per_cu = next_cu; | |
13311 | } | |
13312 | } | |
13313 | ||
fe3e1990 DJ |
13314 | /* Release all extra memory associated with OBJFILE. */ |
13315 | ||
13316 | void | |
13317 | dwarf2_free_objfile (struct objfile *objfile) | |
13318 | { | |
13319 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
13320 | ||
13321 | if (dwarf2_per_objfile == NULL) | |
13322 | return; | |
13323 | ||
13324 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
13325 | free_cached_comp_units (NULL); | |
13326 | ||
9291a0cd TT |
13327 | if (dwarf2_per_objfile->using_index) |
13328 | { | |
13329 | int i; | |
13330 | ||
13331 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
13332 | { | |
13333 | int j; | |
13334 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
13335 | ||
13336 | if (!cu->v.quick->lines) | |
13337 | continue; | |
13338 | ||
13339 | for (j = 0; j < cu->v.quick->lines->num_file_names; ++j) | |
13340 | { | |
13341 | if (cu->v.quick->file_names) | |
13342 | xfree ((void *) cu->v.quick->file_names[j]); | |
13343 | if (cu->v.quick->full_names) | |
13344 | xfree ((void *) cu->v.quick->full_names[j]); | |
13345 | } | |
13346 | ||
13347 | free_line_header (cu->v.quick->lines); | |
13348 | } | |
13349 | } | |
13350 | ||
fe3e1990 DJ |
13351 | /* Everything else should be on the objfile obstack. */ |
13352 | } | |
13353 | ||
1c379e20 DJ |
13354 | /* A pair of DIE offset and GDB type pointer. We store these |
13355 | in a hash table separate from the DIEs, and preserve them | |
13356 | when the DIEs are flushed out of cache. */ | |
13357 | ||
13358 | struct dwarf2_offset_and_type | |
13359 | { | |
13360 | unsigned int offset; | |
13361 | struct type *type; | |
13362 | }; | |
13363 | ||
13364 | /* Hash function for a dwarf2_offset_and_type. */ | |
13365 | ||
13366 | static hashval_t | |
13367 | offset_and_type_hash (const void *item) | |
13368 | { | |
13369 | const struct dwarf2_offset_and_type *ofs = item; | |
9a619af0 | 13370 | |
1c379e20 DJ |
13371 | return ofs->offset; |
13372 | } | |
13373 | ||
13374 | /* Equality function for a dwarf2_offset_and_type. */ | |
13375 | ||
13376 | static int | |
13377 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
13378 | { | |
13379 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
13380 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9a619af0 | 13381 | |
1c379e20 DJ |
13382 | return ofs_lhs->offset == ofs_rhs->offset; |
13383 | } | |
13384 | ||
13385 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
13386 | table if necessary. For convenience, return TYPE. |
13387 | ||
13388 | The DIEs reading must have careful ordering to: | |
13389 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
13390 | reading current DIE. | |
13391 | * Not trying to dereference contents of still incompletely read in types | |
13392 | while reading in other DIEs. | |
13393 | * Enable referencing still incompletely read in types just by a pointer to | |
13394 | the type without accessing its fields. | |
13395 | ||
13396 | Therefore caller should follow these rules: | |
13397 | * Try to fetch any prerequisite types we may need to build this DIE type | |
13398 | before building the type and calling set_die_type. | |
13399 | * After building typer call set_die_type for current DIE as soon as | |
13400 | possible before fetching more types to complete the current type. | |
13401 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 13402 | |
f792889a | 13403 | static struct type * |
1c379e20 DJ |
13404 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
13405 | { | |
13406 | struct dwarf2_offset_and_type **slot, ofs; | |
13407 | ||
b4ba55a1 JB |
13408 | /* For Ada types, make sure that the gnat-specific data is always |
13409 | initialized (if not already set). There are a few types where | |
13410 | we should not be doing so, because the type-specific area is | |
13411 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
13412 | where the type-specific area is used to store the floatformat). | |
13413 | But this is not a problem, because the gnat-specific information | |
13414 | is actually not needed for these types. */ | |
13415 | if (need_gnat_info (cu) | |
13416 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
13417 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
13418 | && !HAVE_GNAT_AUX_INFO (type)) | |
13419 | INIT_GNAT_SPECIFIC (type); | |
13420 | ||
f792889a DJ |
13421 | if (cu->type_hash == NULL) |
13422 | { | |
13423 | gdb_assert (cu->per_cu != NULL); | |
13424 | cu->per_cu->type_hash | |
13425 | = htab_create_alloc_ex (cu->header.length / 24, | |
13426 | offset_and_type_hash, | |
13427 | offset_and_type_eq, | |
13428 | NULL, | |
13429 | &cu->objfile->objfile_obstack, | |
13430 | hashtab_obstack_allocate, | |
13431 | dummy_obstack_deallocate); | |
13432 | cu->type_hash = cu->per_cu->type_hash; | |
13433 | } | |
1c379e20 DJ |
13434 | |
13435 | ofs.offset = die->offset; | |
13436 | ofs.type = type; | |
13437 | slot = (struct dwarf2_offset_and_type **) | |
f792889a | 13438 | htab_find_slot_with_hash (cu->type_hash, &ofs, ofs.offset, INSERT); |
7e314c57 JK |
13439 | if (*slot) |
13440 | complaint (&symfile_complaints, | |
13441 | _("A problem internal to GDB: DIE 0x%x has type already set"), | |
13442 | die->offset); | |
1c379e20 DJ |
13443 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); |
13444 | **slot = ofs; | |
f792889a | 13445 | return type; |
1c379e20 DJ |
13446 | } |
13447 | ||
f792889a DJ |
13448 | /* Find the type for DIE in CU's type_hash, or return NULL if DIE does |
13449 | not have a saved type. */ | |
1c379e20 DJ |
13450 | |
13451 | static struct type * | |
f792889a | 13452 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) |
1c379e20 DJ |
13453 | { |
13454 | struct dwarf2_offset_and_type *slot, ofs; | |
f792889a DJ |
13455 | htab_t type_hash = cu->type_hash; |
13456 | ||
13457 | if (type_hash == NULL) | |
13458 | return NULL; | |
1c379e20 DJ |
13459 | |
13460 | ofs.offset = die->offset; | |
13461 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
13462 | if (slot) | |
13463 | return slot->type; | |
13464 | else | |
13465 | return NULL; | |
13466 | } | |
13467 | ||
10b3939b DJ |
13468 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
13469 | ||
13470 | static void | |
13471 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
13472 | struct dwarf2_per_cu_data *ref_per_cu) | |
13473 | { | |
13474 | void **slot; | |
13475 | ||
13476 | if (cu->dependencies == NULL) | |
13477 | cu->dependencies | |
13478 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
13479 | NULL, &cu->comp_unit_obstack, | |
13480 | hashtab_obstack_allocate, | |
13481 | dummy_obstack_deallocate); | |
13482 | ||
13483 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
13484 | if (*slot == NULL) | |
13485 | *slot = ref_per_cu; | |
13486 | } | |
1c379e20 | 13487 | |
f504f079 DE |
13488 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
13489 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
13490 | cache that we must keep because we are keeping CU. */ |
13491 | ||
10b3939b DJ |
13492 | static int |
13493 | dwarf2_mark_helper (void **slot, void *data) | |
13494 | { | |
13495 | struct dwarf2_per_cu_data *per_cu; | |
13496 | ||
13497 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
13498 | if (per_cu->cu->mark) | |
13499 | return 1; | |
13500 | per_cu->cu->mark = 1; | |
13501 | ||
13502 | if (per_cu->cu->dependencies != NULL) | |
13503 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
13504 | ||
13505 | return 1; | |
13506 | } | |
13507 | ||
f504f079 DE |
13508 | /* Set the mark field in CU and in every other compilation unit in the |
13509 | cache that we must keep because we are keeping CU. */ | |
13510 | ||
ae038cb0 DJ |
13511 | static void |
13512 | dwarf2_mark (struct dwarf2_cu *cu) | |
13513 | { | |
13514 | if (cu->mark) | |
13515 | return; | |
13516 | cu->mark = 1; | |
10b3939b DJ |
13517 | if (cu->dependencies != NULL) |
13518 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
13519 | } |
13520 | ||
13521 | static void | |
13522 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
13523 | { | |
13524 | while (per_cu) | |
13525 | { | |
13526 | per_cu->cu->mark = 0; | |
13527 | per_cu = per_cu->cu->read_in_chain; | |
13528 | } | |
72bf9492 DJ |
13529 | } |
13530 | ||
72bf9492 DJ |
13531 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
13532 | is its offset in .debug_info for this objfile. */ | |
13533 | ||
13534 | static hashval_t | |
13535 | partial_die_hash (const void *item) | |
13536 | { | |
13537 | const struct partial_die_info *part_die = item; | |
9a619af0 | 13538 | |
72bf9492 DJ |
13539 | return part_die->offset; |
13540 | } | |
13541 | ||
13542 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
13543 | are equal if they have the same offset. */ | |
13544 | ||
13545 | static int | |
13546 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
13547 | { | |
13548 | const struct partial_die_info *part_die_lhs = item_lhs; | |
13549 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9a619af0 | 13550 | |
72bf9492 DJ |
13551 | return part_die_lhs->offset == part_die_rhs->offset; |
13552 | } | |
13553 | ||
ae038cb0 DJ |
13554 | static struct cmd_list_element *set_dwarf2_cmdlist; |
13555 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
13556 | ||
13557 | static void | |
13558 | set_dwarf2_cmd (char *args, int from_tty) | |
13559 | { | |
13560 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
13561 | } | |
13562 | ||
13563 | static void | |
13564 | show_dwarf2_cmd (char *args, int from_tty) | |
6e70227d | 13565 | { |
ae038cb0 DJ |
13566 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); |
13567 | } | |
13568 | ||
dce234bc PP |
13569 | /* If section described by INFO was mmapped, munmap it now. */ |
13570 | ||
13571 | static void | |
13572 | munmap_section_buffer (struct dwarf2_section_info *info) | |
13573 | { | |
13574 | if (info->was_mmapped) | |
13575 | { | |
13576 | #ifdef HAVE_MMAP | |
13577 | intptr_t begin = (intptr_t) info->buffer; | |
13578 | intptr_t map_begin = begin & ~(pagesize - 1); | |
13579 | size_t map_length = info->size + begin - map_begin; | |
9a619af0 | 13580 | |
dce234bc PP |
13581 | gdb_assert (munmap ((void *) map_begin, map_length) == 0); |
13582 | #else | |
13583 | /* Without HAVE_MMAP, we should never be here to begin with. */ | |
13584 | gdb_assert (0); | |
13585 | #endif | |
13586 | } | |
13587 | } | |
13588 | ||
13589 | /* munmap debug sections for OBJFILE, if necessary. */ | |
13590 | ||
13591 | static void | |
c1bd65d0 | 13592 | dwarf2_per_objfile_free (struct objfile *objfile, void *d) |
dce234bc PP |
13593 | { |
13594 | struct dwarf2_per_objfile *data = d; | |
9a619af0 | 13595 | |
dce234bc PP |
13596 | munmap_section_buffer (&data->info); |
13597 | munmap_section_buffer (&data->abbrev); | |
13598 | munmap_section_buffer (&data->line); | |
13599 | munmap_section_buffer (&data->str); | |
13600 | munmap_section_buffer (&data->macinfo); | |
13601 | munmap_section_buffer (&data->ranges); | |
13602 | munmap_section_buffer (&data->loc); | |
13603 | munmap_section_buffer (&data->frame); | |
13604 | munmap_section_buffer (&data->eh_frame); | |
9291a0cd TT |
13605 | munmap_section_buffer (&data->gdb_index); |
13606 | } | |
13607 | ||
13608 | \f | |
13609 | ||
13610 | /* The contents of the hash table we create when building the string | |
13611 | table. */ | |
13612 | struct strtab_entry | |
13613 | { | |
13614 | offset_type offset; | |
13615 | const char *str; | |
13616 | }; | |
13617 | ||
13618 | /* Hash function for a strtab_entry. */ | |
13619 | static hashval_t | |
13620 | hash_strtab_entry (const void *e) | |
13621 | { | |
13622 | const struct strtab_entry *entry = e; | |
13623 | return mapped_index_string_hash (entry->str); | |
13624 | } | |
13625 | ||
13626 | /* Equality function for a strtab_entry. */ | |
13627 | static int | |
13628 | eq_strtab_entry (const void *a, const void *b) | |
13629 | { | |
13630 | const struct strtab_entry *ea = a; | |
13631 | const struct strtab_entry *eb = b; | |
13632 | return !strcmp (ea->str, eb->str); | |
13633 | } | |
13634 | ||
13635 | /* Create a strtab_entry hash table. */ | |
13636 | static htab_t | |
13637 | create_strtab (void) | |
13638 | { | |
13639 | return htab_create_alloc (100, hash_strtab_entry, eq_strtab_entry, | |
13640 | xfree, xcalloc, xfree); | |
13641 | } | |
13642 | ||
13643 | /* Add a string to the constant pool. Return the string's offset in | |
13644 | host order. */ | |
13645 | static offset_type | |
13646 | add_string (htab_t table, struct obstack *cpool, const char *str) | |
13647 | { | |
13648 | void **slot; | |
13649 | struct strtab_entry entry; | |
13650 | struct strtab_entry *result; | |
13651 | ||
13652 | entry.str = str; | |
13653 | slot = htab_find_slot (table, &entry, INSERT); | |
13654 | if (*slot) | |
13655 | result = *slot; | |
13656 | else | |
13657 | { | |
13658 | result = XNEW (struct strtab_entry); | |
13659 | result->offset = obstack_object_size (cpool); | |
13660 | result->str = str; | |
13661 | obstack_grow_str0 (cpool, str); | |
13662 | *slot = result; | |
13663 | } | |
13664 | return result->offset; | |
13665 | } | |
13666 | ||
13667 | /* An entry in the symbol table. */ | |
13668 | struct symtab_index_entry | |
13669 | { | |
13670 | /* The name of the symbol. */ | |
13671 | const char *name; | |
13672 | /* The offset of the name in the constant pool. */ | |
13673 | offset_type index_offset; | |
13674 | /* A sorted vector of the indices of all the CUs that hold an object | |
13675 | of this name. */ | |
13676 | VEC (offset_type) *cu_indices; | |
13677 | }; | |
13678 | ||
13679 | /* The symbol table. This is a power-of-2-sized hash table. */ | |
13680 | struct mapped_symtab | |
13681 | { | |
13682 | offset_type n_elements; | |
13683 | offset_type size; | |
13684 | struct symtab_index_entry **data; | |
13685 | }; | |
13686 | ||
13687 | /* Hash function for a symtab_index_entry. */ | |
13688 | static hashval_t | |
13689 | hash_symtab_entry (const void *e) | |
13690 | { | |
13691 | const struct symtab_index_entry *entry = e; | |
13692 | return iterative_hash (VEC_address (offset_type, entry->cu_indices), | |
13693 | sizeof (offset_type) * VEC_length (offset_type, | |
13694 | entry->cu_indices), | |
13695 | 0); | |
13696 | } | |
13697 | ||
13698 | /* Equality function for a symtab_index_entry. */ | |
13699 | static int | |
13700 | eq_symtab_entry (const void *a, const void *b) | |
13701 | { | |
13702 | const struct symtab_index_entry *ea = a; | |
13703 | const struct symtab_index_entry *eb = b; | |
13704 | int len = VEC_length (offset_type, ea->cu_indices); | |
13705 | if (len != VEC_length (offset_type, eb->cu_indices)) | |
13706 | return 0; | |
13707 | return !memcmp (VEC_address (offset_type, ea->cu_indices), | |
13708 | VEC_address (offset_type, eb->cu_indices), | |
13709 | sizeof (offset_type) * len); | |
13710 | } | |
13711 | ||
13712 | /* Destroy a symtab_index_entry. */ | |
13713 | static void | |
13714 | delete_symtab_entry (void *p) | |
13715 | { | |
13716 | struct symtab_index_entry *entry = p; | |
13717 | VEC_free (offset_type, entry->cu_indices); | |
13718 | xfree (entry); | |
13719 | } | |
13720 | ||
13721 | /* Create a hash table holding symtab_index_entry objects. */ | |
13722 | static htab_t | |
13723 | create_index_table (void) | |
13724 | { | |
13725 | return htab_create_alloc (100, hash_symtab_entry, eq_symtab_entry, | |
13726 | delete_symtab_entry, xcalloc, xfree); | |
13727 | } | |
13728 | ||
13729 | /* Create a new mapped symtab object. */ | |
13730 | static struct mapped_symtab * | |
13731 | create_mapped_symtab (void) | |
13732 | { | |
13733 | struct mapped_symtab *symtab = XNEW (struct mapped_symtab); | |
13734 | symtab->n_elements = 0; | |
13735 | symtab->size = 1024; | |
13736 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
13737 | return symtab; | |
13738 | } | |
13739 | ||
13740 | /* Destroy a mapped_symtab. */ | |
13741 | static void | |
13742 | cleanup_mapped_symtab (void *p) | |
13743 | { | |
13744 | struct mapped_symtab *symtab = p; | |
13745 | /* The contents of the array are freed when the other hash table is | |
13746 | destroyed. */ | |
13747 | xfree (symtab->data); | |
13748 | xfree (symtab); | |
13749 | } | |
13750 | ||
13751 | /* Find a slot in SYMTAB for the symbol NAME. Returns a pointer to | |
13752 | the slot. */ | |
13753 | static struct symtab_index_entry ** | |
13754 | find_slot (struct mapped_symtab *symtab, const char *name) | |
13755 | { | |
13756 | offset_type index, step, hash = mapped_index_string_hash (name); | |
13757 | ||
13758 | index = hash & (symtab->size - 1); | |
13759 | step = ((hash * 17) & (symtab->size - 1)) | 1; | |
13760 | ||
13761 | for (;;) | |
13762 | { | |
13763 | if (!symtab->data[index] || !strcmp (name, symtab->data[index]->name)) | |
13764 | return &symtab->data[index]; | |
13765 | index = (index + step) & (symtab->size - 1); | |
13766 | } | |
13767 | } | |
13768 | ||
13769 | /* Expand SYMTAB's hash table. */ | |
13770 | static void | |
13771 | hash_expand (struct mapped_symtab *symtab) | |
13772 | { | |
13773 | offset_type old_size = symtab->size; | |
13774 | offset_type i; | |
13775 | struct symtab_index_entry **old_entries = symtab->data; | |
13776 | ||
13777 | symtab->size *= 2; | |
13778 | symtab->data = XCNEWVEC (struct symtab_index_entry *, symtab->size); | |
13779 | ||
13780 | for (i = 0; i < old_size; ++i) | |
13781 | { | |
13782 | if (old_entries[i]) | |
13783 | { | |
13784 | struct symtab_index_entry **slot = find_slot (symtab, | |
13785 | old_entries[i]->name); | |
13786 | *slot = old_entries[i]; | |
13787 | } | |
13788 | } | |
13789 | ||
13790 | xfree (old_entries); | |
13791 | } | |
13792 | ||
13793 | /* Add an entry to SYMTAB. NAME is the name of the symbol. CU_INDEX | |
13794 | is the index of the CU in which the symbol appears. */ | |
13795 | static void | |
13796 | add_index_entry (struct mapped_symtab *symtab, const char *name, | |
13797 | offset_type cu_index) | |
13798 | { | |
13799 | struct symtab_index_entry **slot; | |
13800 | ||
13801 | ++symtab->n_elements; | |
13802 | if (4 * symtab->n_elements / 3 >= symtab->size) | |
13803 | hash_expand (symtab); | |
13804 | ||
13805 | slot = find_slot (symtab, name); | |
13806 | if (!*slot) | |
13807 | { | |
13808 | *slot = XNEW (struct symtab_index_entry); | |
13809 | (*slot)->name = name; | |
13810 | (*slot)->cu_indices = NULL; | |
13811 | } | |
13812 | /* Don't push an index twice. Due to how we add entries we only | |
13813 | have to check the last one. */ | |
13814 | if (VEC_empty (offset_type, (*slot)->cu_indices) | |
13815 | || VEC_length (offset_type, (*slot)->cu_indices) != cu_index) | |
13816 | VEC_safe_push (offset_type, (*slot)->cu_indices, cu_index); | |
13817 | } | |
13818 | ||
13819 | /* Add a vector of indices to the constant pool. */ | |
13820 | static offset_type | |
13821 | add_indices_to_cpool (htab_t index_table, struct obstack *cpool, | |
13822 | struct symtab_index_entry *entry) | |
13823 | { | |
13824 | void **slot; | |
13825 | ||
13826 | slot = htab_find_slot (index_table, entry, INSERT); | |
13827 | if (!*slot) | |
13828 | { | |
13829 | offset_type len = VEC_length (offset_type, entry->cu_indices); | |
13830 | offset_type val = MAYBE_SWAP (len); | |
13831 | offset_type iter; | |
13832 | int i; | |
13833 | ||
13834 | *slot = entry; | |
13835 | entry->index_offset = obstack_object_size (cpool); | |
13836 | ||
13837 | obstack_grow (cpool, &val, sizeof (val)); | |
13838 | for (i = 0; | |
13839 | VEC_iterate (offset_type, entry->cu_indices, i, iter); | |
13840 | ++i) | |
13841 | { | |
13842 | val = MAYBE_SWAP (iter); | |
13843 | obstack_grow (cpool, &val, sizeof (val)); | |
13844 | } | |
13845 | } | |
13846 | else | |
13847 | { | |
13848 | struct symtab_index_entry *old_entry = *slot; | |
13849 | entry->index_offset = old_entry->index_offset; | |
13850 | entry = old_entry; | |
13851 | } | |
13852 | return entry->index_offset; | |
13853 | } | |
13854 | ||
13855 | /* Write the mapped hash table SYMTAB to the obstack OUTPUT, with | |
13856 | constant pool entries going into the obstack CPOOL. */ | |
13857 | static void | |
13858 | write_hash_table (struct mapped_symtab *symtab, | |
13859 | struct obstack *output, struct obstack *cpool) | |
13860 | { | |
13861 | offset_type i; | |
13862 | htab_t index_table; | |
13863 | htab_t str_table; | |
13864 | ||
13865 | index_table = create_index_table (); | |
13866 | str_table = create_strtab (); | |
13867 | /* We add all the index vectors to the constant pool first, to | |
13868 | ensure alignment is ok. */ | |
13869 | for (i = 0; i < symtab->size; ++i) | |
13870 | { | |
13871 | if (symtab->data[i]) | |
13872 | add_indices_to_cpool (index_table, cpool, symtab->data[i]); | |
13873 | } | |
13874 | ||
13875 | /* Now write out the hash table. */ | |
13876 | for (i = 0; i < symtab->size; ++i) | |
13877 | { | |
13878 | offset_type str_off, vec_off; | |
13879 | ||
13880 | if (symtab->data[i]) | |
13881 | { | |
13882 | str_off = add_string (str_table, cpool, symtab->data[i]->name); | |
13883 | vec_off = symtab->data[i]->index_offset; | |
13884 | } | |
13885 | else | |
13886 | { | |
13887 | /* While 0 is a valid constant pool index, it is not valid | |
13888 | to have 0 for both offsets. */ | |
13889 | str_off = 0; | |
13890 | vec_off = 0; | |
13891 | } | |
13892 | ||
13893 | str_off = MAYBE_SWAP (str_off); | |
13894 | vec_off = MAYBE_SWAP (vec_off); | |
13895 | ||
13896 | obstack_grow (output, &str_off, sizeof (str_off)); | |
13897 | obstack_grow (output, &vec_off, sizeof (vec_off)); | |
13898 | } | |
13899 | ||
13900 | htab_delete (str_table); | |
13901 | htab_delete (index_table); | |
13902 | } | |
13903 | ||
13904 | /* Write an address entry to ADDR_OBSTACK. The addresses are taken | |
13905 | from PST; CU_INDEX is the index of the CU in the vector of all | |
13906 | CUs. */ | |
13907 | static void | |
13908 | add_address_entry (struct objfile *objfile, | |
13909 | struct obstack *addr_obstack, struct partial_symtab *pst, | |
13910 | unsigned int cu_index) | |
13911 | { | |
13912 | offset_type offset; | |
13913 | char addr[8]; | |
13914 | CORE_ADDR baseaddr; | |
13915 | ||
13916 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
13917 | ||
13918 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, pst->textlow - baseaddr); | |
13919 | obstack_grow (addr_obstack, addr, 8); | |
13920 | store_unsigned_integer (addr, 8, BFD_ENDIAN_LITTLE, pst->texthigh - baseaddr); | |
13921 | obstack_grow (addr_obstack, addr, 8); | |
13922 | offset = MAYBE_SWAP (cu_index); | |
13923 | obstack_grow (addr_obstack, &offset, sizeof (offset_type)); | |
13924 | } | |
13925 | ||
13926 | /* Add a list of partial symbols to SYMTAB. */ | |
13927 | static void | |
13928 | write_psymbols (struct mapped_symtab *symtab, | |
13929 | struct partial_symbol **psymp, | |
13930 | int count, | |
13931 | offset_type cu_index) | |
13932 | { | |
13933 | for (; count-- > 0; ++psymp) | |
13934 | { | |
13935 | if (SYMBOL_LANGUAGE (*psymp) == language_ada) | |
13936 | error (_("Ada is not currently supported by the index")); | |
13937 | add_index_entry (symtab, SYMBOL_NATURAL_NAME (*psymp), cu_index); | |
13938 | } | |
13939 | } | |
13940 | ||
13941 | /* Write the contents of an ("unfinished") obstack to FILE. Throw an | |
13942 | exception if there is an error. */ | |
13943 | static void | |
13944 | write_obstack (FILE *file, struct obstack *obstack) | |
13945 | { | |
13946 | if (fwrite (obstack_base (obstack), 1, obstack_object_size (obstack), | |
13947 | file) | |
13948 | != obstack_object_size (obstack)) | |
13949 | error (_("couldn't data write to file")); | |
13950 | } | |
13951 | ||
13952 | /* Unlink a file if the argument is not NULL. */ | |
13953 | static void | |
13954 | unlink_if_set (void *p) | |
13955 | { | |
13956 | char **filename = p; | |
13957 | if (*filename) | |
13958 | unlink (*filename); | |
13959 | } | |
13960 | ||
13961 | /* Create an index file for OBJFILE in the directory DIR. */ | |
13962 | static void | |
13963 | write_psymtabs_to_index (struct objfile *objfile, const char *dir) | |
13964 | { | |
13965 | struct cleanup *cleanup; | |
13966 | char *filename, *cleanup_filename; | |
13967 | struct obstack contents, addr_obstack, constant_pool, symtab_obstack, cu_list; | |
13968 | int i; | |
13969 | FILE *out_file; | |
13970 | struct mapped_symtab *symtab; | |
13971 | offset_type val, size_of_contents, total_len; | |
13972 | struct stat st; | |
13973 | char buf[8]; | |
13974 | ||
13975 | if (!objfile->psymtabs) | |
13976 | return; | |
13977 | if (dwarf2_per_objfile->using_index) | |
13978 | error (_("Cannot use an index to create the index")); | |
13979 | ||
13980 | if (stat (objfile->name, &st) < 0) | |
13981 | perror_with_name (_("Could not stat")); | |
13982 | ||
13983 | filename = concat (dir, SLASH_STRING, lbasename (objfile->name), | |
13984 | INDEX_SUFFIX, (char *) NULL); | |
13985 | cleanup = make_cleanup (xfree, filename); | |
13986 | ||
13987 | out_file = fopen (filename, "wb"); | |
13988 | if (!out_file) | |
13989 | error (_("Can't open `%s' for writing"), filename); | |
13990 | ||
13991 | cleanup_filename = filename; | |
13992 | make_cleanup (unlink_if_set, &cleanup_filename); | |
13993 | ||
13994 | symtab = create_mapped_symtab (); | |
13995 | make_cleanup (cleanup_mapped_symtab, symtab); | |
13996 | ||
13997 | obstack_init (&addr_obstack); | |
13998 | make_cleanup_obstack_free (&addr_obstack); | |
13999 | ||
14000 | obstack_init (&cu_list); | |
14001 | make_cleanup_obstack_free (&cu_list); | |
14002 | ||
14003 | for (i = 0; i < dwarf2_per_objfile->n_comp_units; ++i) | |
14004 | { | |
14005 | struct dwarf2_per_cu_data *cu = dwarf2_per_objfile->all_comp_units[i]; | |
14006 | struct partial_symtab *psymtab = cu->v.psymtab; | |
14007 | gdb_byte val[8]; | |
14008 | ||
14009 | write_psymbols (symtab, | |
14010 | objfile->global_psymbols.list + psymtab->globals_offset, | |
14011 | psymtab->n_global_syms, i); | |
14012 | write_psymbols (symtab, | |
14013 | objfile->static_psymbols.list + psymtab->statics_offset, | |
14014 | psymtab->n_static_syms, i); | |
14015 | ||
14016 | add_address_entry (objfile, &addr_obstack, psymtab, i); | |
14017 | ||
14018 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, cu->offset); | |
14019 | obstack_grow (&cu_list, val, 8); | |
14020 | store_unsigned_integer (val, 8, BFD_ENDIAN_LITTLE, cu->length); | |
14021 | obstack_grow (&cu_list, val, 8); | |
14022 | } | |
14023 | ||
14024 | obstack_init (&constant_pool); | |
14025 | make_cleanup_obstack_free (&constant_pool); | |
14026 | obstack_init (&symtab_obstack); | |
14027 | make_cleanup_obstack_free (&symtab_obstack); | |
14028 | write_hash_table (symtab, &symtab_obstack, &constant_pool); | |
14029 | ||
14030 | obstack_init (&contents); | |
14031 | make_cleanup_obstack_free (&contents); | |
14032 | size_of_contents = 5 * sizeof (offset_type); | |
14033 | total_len = size_of_contents; | |
14034 | ||
14035 | /* The version number. */ | |
14036 | val = MAYBE_SWAP (1); | |
14037 | obstack_grow (&contents, &val, sizeof (val)); | |
14038 | ||
14039 | /* The offset of the CU list from the start of the file. */ | |
14040 | val = MAYBE_SWAP (total_len); | |
14041 | obstack_grow (&contents, &val, sizeof (val)); | |
14042 | total_len += obstack_object_size (&cu_list); | |
14043 | ||
14044 | /* The offset of the address table from the start of the file. */ | |
14045 | val = MAYBE_SWAP (total_len); | |
14046 | obstack_grow (&contents, &val, sizeof (val)); | |
14047 | total_len += obstack_object_size (&addr_obstack); | |
14048 | ||
14049 | /* The offset of the symbol table from the start of the file. */ | |
14050 | val = MAYBE_SWAP (total_len); | |
14051 | obstack_grow (&contents, &val, sizeof (val)); | |
14052 | total_len += obstack_object_size (&symtab_obstack); | |
14053 | ||
14054 | /* The offset of the constant pool from the start of the file. */ | |
14055 | val = MAYBE_SWAP (total_len); | |
14056 | obstack_grow (&contents, &val, sizeof (val)); | |
14057 | total_len += obstack_object_size (&constant_pool); | |
14058 | ||
14059 | gdb_assert (obstack_object_size (&contents) == size_of_contents); | |
14060 | ||
14061 | write_obstack (out_file, &contents); | |
14062 | write_obstack (out_file, &cu_list); | |
14063 | write_obstack (out_file, &addr_obstack); | |
14064 | write_obstack (out_file, &symtab_obstack); | |
14065 | write_obstack (out_file, &constant_pool); | |
14066 | ||
14067 | fclose (out_file); | |
14068 | ||
14069 | /* We want to keep the file, so we set cleanup_filename to NULL | |
14070 | here. See unlink_if_set. */ | |
14071 | cleanup_filename = NULL; | |
14072 | ||
14073 | do_cleanups (cleanup); | |
14074 | } | |
14075 | ||
14076 | /* The mapped index file format is designed to be directly mmap()able | |
14077 | on any architecture. In most cases, a datum is represented using a | |
14078 | little-endian 32-bit integer value, called an offset_type. Big | |
14079 | endian machines must byte-swap the values before using them. | |
14080 | Exceptions to this rule are noted. The data is laid out such that | |
14081 | alignment is always respected. | |
14082 | ||
14083 | A mapped index consists of several sections. | |
14084 | ||
14085 | 1. The file header. This is a sequence of values, of offset_type | |
14086 | unless otherwise noted: | |
14087 | [0] The version number. Currently 1. | |
14088 | [1] The offset, from the start of the file, of the CU list. | |
14089 | [2] The offset, from the start of the file, of the address section. | |
14090 | [3] The offset, from the start of the file, of the symbol table. | |
14091 | [4] The offset, from the start of the file, of the constant pool. | |
14092 | ||
14093 | 2. The CU list. This is a sequence of pairs of 64-bit | |
14094 | little-endian values. The first element in each pair is the offset | |
14095 | of a CU in the .debug_info section. The second element in each | |
14096 | pair is the length of that CU. References to a CU elsewhere in the | |
14097 | map are done using a CU index, which is just the 0-based index into | |
14098 | this table. | |
14099 | ||
14100 | 3. The address section. The address section consists of a sequence | |
14101 | of address entries. Each address entry has three elements. | |
14102 | [0] The low address. This is a 64-bit little-endian value. | |
14103 | [1] The high address. This is a 64-bit little-endian value. | |
14104 | [2] The CU index. This is an offset_type value. | |
14105 | ||
14106 | 4. The symbol table. This is a hash table. The size of the hash | |
14107 | table is always a power of 2. The initial hash and the step are | |
14108 | currently defined by the `find_slot' function. | |
14109 | ||
14110 | Each slot in the hash table consists of a pair of offset_type | |
14111 | values. The first value is the offset of the symbol's name in the | |
14112 | constant pool. The second value is the offset of the CU vector in | |
14113 | the constant pool. | |
14114 | ||
14115 | If both values are 0, then this slot in the hash table is empty. | |
14116 | This is ok because while 0 is a valid constant pool index, it | |
14117 | cannot be a valid index for both a string and a CU vector. | |
14118 | ||
14119 | A string in the constant pool is stored as a \0-terminated string, | |
14120 | as you'd expect. | |
14121 | ||
14122 | A CU vector in the constant pool is a sequence of offset_type | |
14123 | values. The first value is the number of CU indices in the vector. | |
14124 | Each subsequent value is the index of a CU in the CU list. This | |
14125 | element in the hash table is used to indicate which CUs define the | |
14126 | symbol. | |
14127 | ||
14128 | 5. The constant pool. This is simply a bunch of bytes. It is | |
14129 | organized so that alignment is correct: CU vectors are stored | |
14130 | first, followed by strings. */ | |
14131 | static void | |
14132 | save_gdb_index_command (char *arg, int from_tty) | |
14133 | { | |
14134 | struct objfile *objfile; | |
14135 | ||
14136 | if (!arg || !*arg) | |
14137 | error (_("usage: maintenance save-gdb-index DIRECTORY")); | |
14138 | ||
14139 | ALL_OBJFILES (objfile) | |
14140 | { | |
14141 | struct stat st; | |
14142 | ||
14143 | /* If the objfile does not correspond to an actual file, skip it. */ | |
14144 | if (stat (objfile->name, &st) < 0) | |
14145 | continue; | |
14146 | ||
14147 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
14148 | if (dwarf2_per_objfile) | |
14149 | { | |
14150 | volatile struct gdb_exception except; | |
14151 | ||
14152 | TRY_CATCH (except, RETURN_MASK_ERROR) | |
14153 | { | |
14154 | write_psymtabs_to_index (objfile, arg); | |
14155 | } | |
14156 | if (except.reason < 0) | |
14157 | exception_fprintf (gdb_stderr, except, | |
14158 | _("Error while writing index for `%s': "), | |
14159 | objfile->name); | |
14160 | } | |
14161 | } | |
dce234bc PP |
14162 | } |
14163 | ||
9291a0cd TT |
14164 | \f |
14165 | ||
9eae7c52 TT |
14166 | int dwarf2_always_disassemble; |
14167 | ||
14168 | static void | |
14169 | show_dwarf2_always_disassemble (struct ui_file *file, int from_tty, | |
14170 | struct cmd_list_element *c, const char *value) | |
14171 | { | |
14172 | fprintf_filtered (file, _("\ | |
14173 | Whether to always disassemble DWARF expressions is %s.\n"), | |
14174 | value); | |
14175 | } | |
14176 | ||
6502dd73 DJ |
14177 | void _initialize_dwarf2_read (void); |
14178 | ||
14179 | void | |
14180 | _initialize_dwarf2_read (void) | |
14181 | { | |
dce234bc | 14182 | dwarf2_objfile_data_key |
c1bd65d0 | 14183 | = register_objfile_data_with_cleanup (NULL, dwarf2_per_objfile_free); |
ae038cb0 | 14184 | |
1bedd215 AC |
14185 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
14186 | Set DWARF 2 specific variables.\n\ | |
14187 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
14188 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
14189 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
14190 | ||
1bedd215 AC |
14191 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
14192 | Show DWARF 2 specific variables\n\ | |
14193 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
14194 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
14195 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
14196 | ||
14197 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
14198 | &dwarf2_max_cache_age, _("\ |
14199 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
14200 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
14201 | A higher limit means that cached compilation units will be stored\n\ | |
14202 | in memory longer, and more total memory will be used. Zero disables\n\ | |
14203 | caching, which can slow down startup."), | |
2c5b56ce | 14204 | NULL, |
920d2a44 | 14205 | show_dwarf2_max_cache_age, |
2c5b56ce | 14206 | &set_dwarf2_cmdlist, |
ae038cb0 | 14207 | &show_dwarf2_cmdlist); |
d97bc12b | 14208 | |
9eae7c52 TT |
14209 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
14210 | &dwarf2_always_disassemble, _("\ | |
14211 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
14212 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
14213 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
14214 | syntax. When disabled, expressions will be printed in a more\n\ | |
14215 | conversational style, when possible."), | |
14216 | NULL, | |
14217 | show_dwarf2_always_disassemble, | |
14218 | &set_dwarf2_cmdlist, | |
14219 | &show_dwarf2_cmdlist); | |
14220 | ||
d97bc12b DE |
14221 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ |
14222 | Set debugging of the dwarf2 DIE reader."), _("\ | |
14223 | Show debugging of the dwarf2 DIE reader."), _("\ | |
14224 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
14225 | The value is the maximum depth to print."), | |
14226 | NULL, | |
14227 | NULL, | |
14228 | &setdebuglist, &showdebuglist); | |
9291a0cd TT |
14229 | |
14230 | add_cmd ("gdb-index", class_files, save_gdb_index_command, | |
14231 | _("Save a .gdb-index file"), | |
14232 | &save_cmdlist); | |
6502dd73 | 14233 | } |