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, |
0fb0cc75 JB |
4 | 2004, 2005, 2006, 2007, 2008, 2009 |
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 SS |
33 | #include "objfiles.h" |
34 | #include "elf/dwarf2.h" | |
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" | |
ff013f42 | 49 | #include "addrmap.h" |
4c2df51b | 50 | |
c906108c SS |
51 | #include <fcntl.h> |
52 | #include "gdb_string.h" | |
4bdf3d34 | 53 | #include "gdb_assert.h" |
c906108c | 54 | #include <sys/types.h> |
233a11ab CS |
55 | #ifdef HAVE_ZLIB_H |
56 | #include <zlib.h> | |
57 | #endif | |
c906108c | 58 | |
d8151005 DJ |
59 | /* A note on memory usage for this file. |
60 | ||
61 | At the present time, this code reads the debug info sections into | |
62 | the objfile's objfile_obstack. A definite improvement for startup | |
63 | time, on platforms which do not emit relocations for debug | |
64 | sections, would be to use mmap instead. The object's complete | |
65 | debug information is loaded into memory, partly to simplify | |
66 | absolute DIE references. | |
67 | ||
68 | Whether using obstacks or mmap, the sections should remain loaded | |
69 | until the objfile is released, and pointers into the section data | |
70 | can be used for any other data associated to the objfile (symbol | |
71 | names, type names, location expressions to name a few). */ | |
72 | ||
107d2387 | 73 | #if 0 |
357e46e7 | 74 | /* .debug_info header for a compilation unit |
c906108c SS |
75 | Because of alignment constraints, this structure has padding and cannot |
76 | be mapped directly onto the beginning of the .debug_info section. */ | |
77 | typedef struct comp_unit_header | |
78 | { | |
79 | unsigned int length; /* length of the .debug_info | |
80 | contribution */ | |
81 | unsigned short version; /* version number -- 2 for DWARF | |
82 | version 2 */ | |
83 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
84 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
85 | } | |
86 | _COMP_UNIT_HEADER; | |
87 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 88 | #endif |
c906108c SS |
89 | |
90 | /* .debug_pubnames header | |
91 | Because of alignment constraints, this structure has padding and cannot | |
92 | be mapped directly onto the beginning of the .debug_info section. */ | |
93 | typedef struct pubnames_header | |
94 | { | |
95 | unsigned int length; /* length of the .debug_pubnames | |
96 | contribution */ | |
97 | unsigned char version; /* version number -- 2 for DWARF | |
98 | version 2 */ | |
99 | unsigned int info_offset; /* offset into .debug_info section */ | |
100 | unsigned int info_size; /* byte size of .debug_info section | |
101 | portion */ | |
102 | } | |
103 | _PUBNAMES_HEADER; | |
104 | #define _ACTUAL_PUBNAMES_HEADER_SIZE 13 | |
105 | ||
106 | /* .debug_pubnames header | |
107 | Because of alignment constraints, this structure has padding and cannot | |
108 | be mapped directly onto the beginning of the .debug_info section. */ | |
109 | typedef struct aranges_header | |
110 | { | |
111 | unsigned int length; /* byte len of the .debug_aranges | |
112 | contribution */ | |
113 | unsigned short version; /* version number -- 2 for DWARF | |
114 | version 2 */ | |
115 | unsigned int info_offset; /* offset into .debug_info section */ | |
116 | unsigned char addr_size; /* byte size of an address */ | |
117 | unsigned char seg_size; /* byte size of segment descriptor */ | |
118 | } | |
119 | _ARANGES_HEADER; | |
120 | #define _ACTUAL_ARANGES_HEADER_SIZE 12 | |
121 | ||
122 | /* .debug_line statement program prologue | |
123 | Because of alignment constraints, this structure has padding and cannot | |
124 | be mapped directly onto the beginning of the .debug_info section. */ | |
125 | typedef struct statement_prologue | |
126 | { | |
127 | unsigned int total_length; /* byte length of the statement | |
128 | information */ | |
129 | unsigned short version; /* version number -- 2 for DWARF | |
130 | version 2 */ | |
131 | unsigned int prologue_length; /* # bytes between prologue & | |
132 | stmt program */ | |
133 | unsigned char minimum_instruction_length; /* byte size of | |
134 | smallest instr */ | |
135 | unsigned char default_is_stmt; /* initial value of is_stmt | |
136 | register */ | |
137 | char line_base; | |
138 | unsigned char line_range; | |
139 | unsigned char opcode_base; /* number assigned to first special | |
140 | opcode */ | |
141 | unsigned char *standard_opcode_lengths; | |
142 | } | |
143 | _STATEMENT_PROLOGUE; | |
144 | ||
d97bc12b DE |
145 | /* When non-zero, dump DIEs after they are read in. */ |
146 | static int dwarf2_die_debug = 0; | |
147 | ||
df8a16a1 DJ |
148 | /* When set, the file that we're processing is known to have debugging |
149 | info for C++ namespaces. GCC 3.3.x did not produce this information, | |
150 | but later versions do. */ | |
151 | ||
152 | static int processing_has_namespace_info; | |
153 | ||
6502dd73 DJ |
154 | static const struct objfile_data *dwarf2_objfile_data_key; |
155 | ||
156 | struct dwarf2_per_objfile | |
157 | { | |
158 | /* Sizes of debugging sections. */ | |
159 | unsigned int info_size; | |
160 | unsigned int abbrev_size; | |
161 | unsigned int line_size; | |
162 | unsigned int pubnames_size; | |
163 | unsigned int aranges_size; | |
164 | unsigned int loc_size; | |
165 | unsigned int macinfo_size; | |
166 | unsigned int str_size; | |
167 | unsigned int ranges_size; | |
168 | unsigned int frame_size; | |
169 | unsigned int eh_frame_size; | |
170 | ||
171 | /* Loaded data from the sections. */ | |
fe1b8b76 JB |
172 | gdb_byte *info_buffer; |
173 | gdb_byte *abbrev_buffer; | |
174 | gdb_byte *line_buffer; | |
175 | gdb_byte *str_buffer; | |
176 | gdb_byte *macinfo_buffer; | |
177 | gdb_byte *ranges_buffer; | |
178 | gdb_byte *loc_buffer; | |
ae038cb0 | 179 | |
10b3939b DJ |
180 | /* A list of all the compilation units. This is used to locate |
181 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
182 | struct dwarf2_per_cu_data **all_comp_units; |
183 | ||
184 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
185 | int n_comp_units; | |
186 | ||
187 | /* A chain of compilation units that are currently read in, so that | |
188 | they can be freed later. */ | |
189 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 FR |
190 | |
191 | /* A flag indicating wether this objfile has a section loaded at a | |
192 | VMA of 0. */ | |
193 | int has_section_at_zero; | |
6502dd73 DJ |
194 | }; |
195 | ||
196 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 197 | |
086df311 DJ |
198 | static asection *dwarf_info_section; |
199 | static asection *dwarf_abbrev_section; | |
200 | static asection *dwarf_line_section; | |
201 | static asection *dwarf_pubnames_section; | |
202 | static asection *dwarf_aranges_section; | |
203 | static asection *dwarf_loc_section; | |
204 | static asection *dwarf_macinfo_section; | |
205 | static asection *dwarf_str_section; | |
206 | static asection *dwarf_ranges_section; | |
207 | asection *dwarf_frame_section; | |
208 | asection *dwarf_eh_frame_section; | |
209 | ||
c906108c SS |
210 | /* names of the debugging sections */ |
211 | ||
233a11ab CS |
212 | /* Note that if the debugging section has been compressed, it might |
213 | have a name like .zdebug_info. */ | |
214 | ||
215 | #define INFO_SECTION "debug_info" | |
216 | #define ABBREV_SECTION "debug_abbrev" | |
217 | #define LINE_SECTION "debug_line" | |
218 | #define PUBNAMES_SECTION "debug_pubnames" | |
219 | #define ARANGES_SECTION "debug_aranges" | |
220 | #define LOC_SECTION "debug_loc" | |
221 | #define MACINFO_SECTION "debug_macinfo" | |
222 | #define STR_SECTION "debug_str" | |
223 | #define RANGES_SECTION "debug_ranges" | |
224 | #define FRAME_SECTION "debug_frame" | |
225 | #define EH_FRAME_SECTION "eh_frame" | |
c906108c SS |
226 | |
227 | /* local data types */ | |
228 | ||
57349743 JB |
229 | /* We hold several abbreviation tables in memory at the same time. */ |
230 | #ifndef ABBREV_HASH_SIZE | |
231 | #define ABBREV_HASH_SIZE 121 | |
232 | #endif | |
233 | ||
107d2387 AC |
234 | /* The data in a compilation unit header, after target2host |
235 | translation, looks like this. */ | |
c906108c | 236 | struct comp_unit_head |
a738430d | 237 | { |
c764a876 | 238 | unsigned int length; |
a738430d | 239 | short version; |
a738430d MK |
240 | unsigned char addr_size; |
241 | unsigned char signed_addr_p; | |
9cbfa09e | 242 | unsigned int abbrev_offset; |
57349743 | 243 | |
a738430d MK |
244 | /* Size of file offsets; either 4 or 8. */ |
245 | unsigned int offset_size; | |
57349743 | 246 | |
a738430d MK |
247 | /* Size of the length field; either 4 or 12. */ |
248 | unsigned int initial_length_size; | |
57349743 | 249 | |
a738430d MK |
250 | /* Offset to the first byte of this compilation unit header in the |
251 | .debug_info section, for resolving relative reference dies. */ | |
252 | unsigned int offset; | |
57349743 | 253 | |
d00adf39 DE |
254 | /* Offset to first die in this cu from the start of the cu. |
255 | This will be the first byte following the compilation unit header. */ | |
256 | unsigned int first_die_offset; | |
a738430d | 257 | }; |
c906108c | 258 | |
e7c27a73 DJ |
259 | /* Internal state when decoding a particular compilation unit. */ |
260 | struct dwarf2_cu | |
261 | { | |
262 | /* The objfile containing this compilation unit. */ | |
263 | struct objfile *objfile; | |
264 | ||
d00adf39 | 265 | /* The header of the compilation unit. */ |
e7c27a73 | 266 | struct comp_unit_head header; |
e142c38c | 267 | |
d00adf39 DE |
268 | /* Base address of this compilation unit. */ |
269 | CORE_ADDR base_address; | |
270 | ||
271 | /* Non-zero if base_address has been set. */ | |
272 | int base_known; | |
273 | ||
e142c38c DJ |
274 | struct function_range *first_fn, *last_fn, *cached_fn; |
275 | ||
276 | /* The language we are debugging. */ | |
277 | enum language language; | |
278 | const struct language_defn *language_defn; | |
279 | ||
b0f35d58 DL |
280 | const char *producer; |
281 | ||
e142c38c DJ |
282 | /* The generic symbol table building routines have separate lists for |
283 | file scope symbols and all all other scopes (local scopes). So | |
284 | we need to select the right one to pass to add_symbol_to_list(). | |
285 | We do it by keeping a pointer to the correct list in list_in_scope. | |
286 | ||
287 | FIXME: The original dwarf code just treated the file scope as the | |
288 | first local scope, and all other local scopes as nested local | |
289 | scopes, and worked fine. Check to see if we really need to | |
290 | distinguish these in buildsym.c. */ | |
291 | struct pending **list_in_scope; | |
292 | ||
f3dd6933 DJ |
293 | /* DWARF abbreviation table associated with this compilation unit. */ |
294 | struct abbrev_info **dwarf2_abbrevs; | |
295 | ||
296 | /* Storage for the abbrev table. */ | |
297 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
298 | |
299 | /* Hash table holding all the loaded partial DIEs. */ | |
300 | htab_t partial_dies; | |
301 | ||
ff013f42 | 302 | /* `.debug_ranges' offset for this `DW_TAG_compile_unit' DIE. */ |
c764a876 | 303 | unsigned int ranges_offset; |
ff013f42 | 304 | |
72bf9492 DJ |
305 | /* Storage for things with the same lifetime as this read-in compilation |
306 | unit, including partial DIEs. */ | |
307 | struct obstack comp_unit_obstack; | |
308 | ||
ae038cb0 DJ |
309 | /* When multiple dwarf2_cu structures are living in memory, this field |
310 | chains them all together, so that they can be released efficiently. | |
311 | We will probably also want a generation counter so that most-recently-used | |
312 | compilation units are cached... */ | |
313 | struct dwarf2_per_cu_data *read_in_chain; | |
314 | ||
315 | /* Backchain to our per_cu entry if the tree has been built. */ | |
316 | struct dwarf2_per_cu_data *per_cu; | |
317 | ||
f792889a DJ |
318 | /* Pointer to the die -> type map. Although it is stored |
319 | permanently in per_cu, we copy it here to avoid double | |
320 | indirection. */ | |
321 | htab_t type_hash; | |
322 | ||
ae038cb0 DJ |
323 | /* How many compilation units ago was this CU last referenced? */ |
324 | int last_used; | |
325 | ||
10b3939b | 326 | /* A hash table of die offsets for following references. */ |
51545339 | 327 | htab_t die_hash; |
10b3939b DJ |
328 | |
329 | /* Full DIEs if read in. */ | |
330 | struct die_info *dies; | |
331 | ||
332 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
333 | units referenced by this one. Only set during full symbol processing; | |
334 | partial symbol tables do not have dependencies. */ | |
335 | htab_t dependencies; | |
336 | ||
cb1df416 DJ |
337 | /* Header data from the line table, during full symbol processing. */ |
338 | struct line_header *line_header; | |
339 | ||
ae038cb0 DJ |
340 | /* Mark used when releasing cached dies. */ |
341 | unsigned int mark : 1; | |
342 | ||
343 | /* This flag will be set if this compilation unit might include | |
344 | inter-compilation-unit references. */ | |
345 | unsigned int has_form_ref_addr : 1; | |
346 | ||
72bf9492 DJ |
347 | /* This flag will be set if this compilation unit includes any |
348 | DW_TAG_namespace DIEs. If we know that there are explicit | |
349 | DIEs for namespaces, we don't need to try to infer them | |
350 | from mangled names. */ | |
351 | unsigned int has_namespace_info : 1; | |
ff013f42 JK |
352 | |
353 | /* Field `ranges_offset' is filled in; flag as the value may be zero. */ | |
354 | unsigned int has_ranges_offset : 1; | |
e7c27a73 DJ |
355 | }; |
356 | ||
10b3939b DJ |
357 | /* Persistent data held for a compilation unit, even when not |
358 | processing it. We put a pointer to this structure in the | |
359 | read_symtab_private field of the psymtab. If we encounter | |
360 | inter-compilation-unit references, we also maintain a sorted | |
361 | list of all compilation units. */ | |
362 | ||
ae038cb0 DJ |
363 | struct dwarf2_per_cu_data |
364 | { | |
5afb4e99 | 365 | /* The start offset and length of this compilation unit. 2**30-1 |
ae038cb0 | 366 | bytes should suffice to store the length of any compilation unit |
45452591 DE |
367 | - if it doesn't, GDB will fall over anyway. |
368 | NOTE: Unlike comp_unit_head.length, this length includes | |
369 | initial_length_size. */ | |
c764a876 DE |
370 | unsigned int offset; |
371 | unsigned int length : 30; | |
ae038cb0 DJ |
372 | |
373 | /* Flag indicating this compilation unit will be read in before | |
374 | any of the current compilation units are processed. */ | |
c764a876 | 375 | unsigned int queued : 1; |
ae038cb0 | 376 | |
5afb4e99 DJ |
377 | /* This flag will be set if we need to load absolutely all DIEs |
378 | for this compilation unit, instead of just the ones we think | |
379 | are interesting. It gets set if we look for a DIE in the | |
380 | hash table and don't find it. */ | |
381 | unsigned int load_all_dies : 1; | |
382 | ||
ae038cb0 DJ |
383 | /* Set iff currently read in. */ |
384 | struct dwarf2_cu *cu; | |
1c379e20 DJ |
385 | |
386 | /* If full symbols for this CU have been read in, then this field | |
387 | holds a map of DIE offsets to types. It isn't always possible | |
388 | to reconstruct this information later, so we have to preserve | |
389 | it. */ | |
1c379e20 | 390 | htab_t type_hash; |
10b3939b | 391 | |
31ffec48 DJ |
392 | /* The partial symbol table associated with this compilation unit, |
393 | or NULL for partial units (which do not have an associated | |
394 | symtab). */ | |
10b3939b | 395 | struct partial_symtab *psymtab; |
ae038cb0 DJ |
396 | }; |
397 | ||
debd256d JB |
398 | /* The line number information for a compilation unit (found in the |
399 | .debug_line section) begins with a "statement program header", | |
400 | which contains the following information. */ | |
401 | struct line_header | |
402 | { | |
403 | unsigned int total_length; | |
404 | unsigned short version; | |
405 | unsigned int header_length; | |
406 | unsigned char minimum_instruction_length; | |
407 | unsigned char default_is_stmt; | |
408 | int line_base; | |
409 | unsigned char line_range; | |
410 | unsigned char opcode_base; | |
411 | ||
412 | /* standard_opcode_lengths[i] is the number of operands for the | |
413 | standard opcode whose value is i. This means that | |
414 | standard_opcode_lengths[0] is unused, and the last meaningful | |
415 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
416 | unsigned char *standard_opcode_lengths; | |
417 | ||
418 | /* The include_directories table. NOTE! These strings are not | |
419 | allocated with xmalloc; instead, they are pointers into | |
420 | debug_line_buffer. If you try to free them, `free' will get | |
421 | indigestion. */ | |
422 | unsigned int num_include_dirs, include_dirs_size; | |
423 | char **include_dirs; | |
424 | ||
425 | /* The file_names table. NOTE! These strings are not allocated | |
426 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
427 | Don't try to free them directly. */ | |
428 | unsigned int num_file_names, file_names_size; | |
429 | struct file_entry | |
c906108c | 430 | { |
debd256d JB |
431 | char *name; |
432 | unsigned int dir_index; | |
433 | unsigned int mod_time; | |
434 | unsigned int length; | |
aaa75496 | 435 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 436 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
437 | } *file_names; |
438 | ||
439 | /* The start and end of the statement program following this | |
6502dd73 | 440 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 441 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 442 | }; |
c906108c SS |
443 | |
444 | /* When we construct a partial symbol table entry we only | |
445 | need this much information. */ | |
446 | struct partial_die_info | |
447 | { | |
72bf9492 | 448 | /* Offset of this DIE. */ |
c906108c | 449 | unsigned int offset; |
72bf9492 DJ |
450 | |
451 | /* DWARF-2 tag for this DIE. */ | |
452 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
453 | ||
454 | /* Language code associated with this DIE. This is only used | |
455 | for the compilation unit DIE. */ | |
456 | unsigned int language : 8; | |
457 | ||
458 | /* Assorted flags describing the data found in this DIE. */ | |
459 | unsigned int has_children : 1; | |
460 | unsigned int is_external : 1; | |
461 | unsigned int is_declaration : 1; | |
462 | unsigned int has_type : 1; | |
463 | unsigned int has_specification : 1; | |
aaa75496 | 464 | unsigned int has_stmt_list : 1; |
72bf9492 DJ |
465 | unsigned int has_pc_info : 1; |
466 | ||
467 | /* Flag set if the SCOPE field of this structure has been | |
468 | computed. */ | |
469 | unsigned int scope_set : 1; | |
470 | ||
fa4028e9 JB |
471 | /* Flag set if the DIE has a byte_size attribute. */ |
472 | unsigned int has_byte_size : 1; | |
473 | ||
72bf9492 DJ |
474 | /* The name of this DIE. Normally the value of DW_AT_name, but |
475 | sometimes DW_TAG_MIPS_linkage_name or a string computed in some | |
476 | other fashion. */ | |
c906108c | 477 | char *name; |
57c22c6c | 478 | char *dirname; |
72bf9492 DJ |
479 | |
480 | /* The scope to prepend to our children. This is generally | |
481 | allocated on the comp_unit_obstack, so will disappear | |
482 | when this compilation unit leaves the cache. */ | |
483 | char *scope; | |
484 | ||
485 | /* The location description associated with this DIE, if any. */ | |
486 | struct dwarf_block *locdesc; | |
487 | ||
488 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
489 | CORE_ADDR lowpc; |
490 | CORE_ADDR highpc; | |
72bf9492 DJ |
491 | |
492 | /* Pointer into the info_buffer pointing at the target of | |
493 | DW_AT_sibling, if any. */ | |
fe1b8b76 | 494 | gdb_byte *sibling; |
72bf9492 DJ |
495 | |
496 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
497 | DW_AT_specification (or DW_AT_abstract_origin or | |
498 | DW_AT_extension). */ | |
499 | unsigned int spec_offset; | |
500 | ||
aaa75496 JB |
501 | /* If HAS_STMT_LIST, the offset of the Line Number Information data. */ |
502 | unsigned int line_offset; | |
503 | ||
72bf9492 DJ |
504 | /* Pointers to this DIE's parent, first child, and next sibling, |
505 | if any. */ | |
506 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
507 | }; |
508 | ||
509 | /* This data structure holds the information of an abbrev. */ | |
510 | struct abbrev_info | |
511 | { | |
512 | unsigned int number; /* number identifying abbrev */ | |
513 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
514 | unsigned short has_children; /* boolean */ |
515 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
516 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
517 | struct abbrev_info *next; /* next in chain */ | |
518 | }; | |
519 | ||
520 | struct attr_abbrev | |
521 | { | |
9d25dd43 DE |
522 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
523 | ENUM_BITFIELD(dwarf_form) form : 16; | |
c906108c SS |
524 | }; |
525 | ||
b60c80d6 DJ |
526 | /* Attributes have a name and a value */ |
527 | struct attribute | |
528 | { | |
9d25dd43 DE |
529 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
530 | ENUM_BITFIELD(dwarf_form) form : 16; | |
b60c80d6 DJ |
531 | union |
532 | { | |
533 | char *str; | |
534 | struct dwarf_block *blk; | |
535 | unsigned long unsnd; | |
536 | long int snd; | |
537 | CORE_ADDR addr; | |
538 | } | |
539 | u; | |
540 | }; | |
541 | ||
c906108c SS |
542 | /* This data structure holds a complete die structure. */ |
543 | struct die_info | |
544 | { | |
76815b17 DE |
545 | /* DWARF-2 tag for this DIE. */ |
546 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
547 | ||
548 | /* Number of attributes */ | |
549 | unsigned short num_attrs; | |
550 | ||
551 | /* Abbrev number */ | |
552 | unsigned int abbrev; | |
553 | ||
554 | /* Offset in .debug_info section */ | |
555 | unsigned int offset; | |
78ba4af6 JB |
556 | |
557 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
558 | points to this die's parent; CHILD points to the first child of | |
559 | this node; and all the children of a given node are chained | |
560 | together via their SIBLING fields, terminated by a die whose | |
561 | tag is zero. */ | |
639d11d3 DC |
562 | struct die_info *child; /* Its first child, if any. */ |
563 | struct die_info *sibling; /* Its next sibling, if any. */ | |
564 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 565 | |
b60c80d6 DJ |
566 | /* An array of attributes, with NUM_ATTRS elements. There may be |
567 | zero, but it's not common and zero-sized arrays are not | |
568 | sufficiently portable C. */ | |
569 | struct attribute attrs[1]; | |
c906108c SS |
570 | }; |
571 | ||
5fb290d7 DJ |
572 | struct function_range |
573 | { | |
574 | const char *name; | |
575 | CORE_ADDR lowpc, highpc; | |
576 | int seen_line; | |
577 | struct function_range *next; | |
578 | }; | |
579 | ||
c906108c SS |
580 | /* Get at parts of an attribute structure */ |
581 | ||
582 | #define DW_STRING(attr) ((attr)->u.str) | |
583 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
584 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
585 | #define DW_SND(attr) ((attr)->u.snd) | |
586 | #define DW_ADDR(attr) ((attr)->u.addr) | |
587 | ||
588 | /* Blocks are a bunch of untyped bytes. */ | |
589 | struct dwarf_block | |
590 | { | |
591 | unsigned int size; | |
fe1b8b76 | 592 | gdb_byte *data; |
c906108c SS |
593 | }; |
594 | ||
c906108c SS |
595 | #ifndef ATTR_ALLOC_CHUNK |
596 | #define ATTR_ALLOC_CHUNK 4 | |
597 | #endif | |
598 | ||
c906108c SS |
599 | /* Allocate fields for structs, unions and enums in this size. */ |
600 | #ifndef DW_FIELD_ALLOC_CHUNK | |
601 | #define DW_FIELD_ALLOC_CHUNK 4 | |
602 | #endif | |
603 | ||
c906108c SS |
604 | /* A zeroed version of a partial die for initialization purposes. */ |
605 | static struct partial_die_info zeroed_partial_die; | |
606 | ||
c906108c SS |
607 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
608 | but this would require a corresponding change in unpack_field_as_long | |
609 | and friends. */ | |
610 | static int bits_per_byte = 8; | |
611 | ||
612 | /* The routines that read and process dies for a C struct or C++ class | |
613 | pass lists of data member fields and lists of member function fields | |
614 | in an instance of a field_info structure, as defined below. */ | |
615 | struct field_info | |
c5aa993b JM |
616 | { |
617 | /* List of data member and baseclasses fields. */ | |
618 | struct nextfield | |
619 | { | |
620 | struct nextfield *next; | |
621 | int accessibility; | |
622 | int virtuality; | |
623 | struct field field; | |
624 | } | |
625 | *fields; | |
c906108c | 626 | |
c5aa993b JM |
627 | /* Number of fields. */ |
628 | int nfields; | |
c906108c | 629 | |
c5aa993b JM |
630 | /* Number of baseclasses. */ |
631 | int nbaseclasses; | |
c906108c | 632 | |
c5aa993b JM |
633 | /* Set if the accesibility of one of the fields is not public. */ |
634 | int non_public_fields; | |
c906108c | 635 | |
c5aa993b JM |
636 | /* Member function fields array, entries are allocated in the order they |
637 | are encountered in the object file. */ | |
638 | struct nextfnfield | |
639 | { | |
640 | struct nextfnfield *next; | |
641 | struct fn_field fnfield; | |
642 | } | |
643 | *fnfields; | |
c906108c | 644 | |
c5aa993b JM |
645 | /* Member function fieldlist array, contains name of possibly overloaded |
646 | member function, number of overloaded member functions and a pointer | |
647 | to the head of the member function field chain. */ | |
648 | struct fnfieldlist | |
649 | { | |
650 | char *name; | |
651 | int length; | |
652 | struct nextfnfield *head; | |
653 | } | |
654 | *fnfieldlists; | |
c906108c | 655 | |
c5aa993b JM |
656 | /* Number of entries in the fnfieldlists array. */ |
657 | int nfnfields; | |
658 | }; | |
c906108c | 659 | |
10b3939b DJ |
660 | /* One item on the queue of compilation units to read in full symbols |
661 | for. */ | |
662 | struct dwarf2_queue_item | |
663 | { | |
664 | struct dwarf2_per_cu_data *per_cu; | |
665 | struct dwarf2_queue_item *next; | |
666 | }; | |
667 | ||
668 | /* The current queue. */ | |
669 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
670 | ||
ae038cb0 DJ |
671 | /* Loaded secondary compilation units are kept in memory until they |
672 | have not been referenced for the processing of this many | |
673 | compilation units. Set this to zero to disable caching. Cache | |
674 | sizes of up to at least twenty will improve startup time for | |
675 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
676 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
677 | static void |
678 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
679 | struct cmd_list_element *c, const char *value) | |
680 | { | |
681 | fprintf_filtered (file, _("\ | |
682 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
683 | value); | |
684 | } | |
685 | ||
ae038cb0 | 686 | |
c906108c SS |
687 | /* Various complaints about symbol reading that don't abort the process */ |
688 | ||
4d3c2250 KB |
689 | static void |
690 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 691 | { |
4d3c2250 | 692 | complaint (&symfile_complaints, |
e2e0b3e5 | 693 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
694 | } |
695 | ||
25e43795 DJ |
696 | static void |
697 | dwarf2_debug_line_missing_file_complaint (void) | |
698 | { | |
699 | complaint (&symfile_complaints, | |
700 | _(".debug_line section has line data without a file")); | |
701 | } | |
702 | ||
59205f5a JB |
703 | static void |
704 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
705 | { | |
706 | complaint (&symfile_complaints, | |
707 | _(".debug_line section has line program sequence without an end")); | |
708 | } | |
709 | ||
4d3c2250 KB |
710 | static void |
711 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 712 | { |
e2e0b3e5 | 713 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
714 | } |
715 | ||
4d3c2250 KB |
716 | static void |
717 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
718 | int arg3) | |
2e276125 | 719 | { |
4d3c2250 | 720 | complaint (&symfile_complaints, |
e2e0b3e5 | 721 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
722 | arg2, arg3); |
723 | } | |
724 | ||
725 | static void | |
726 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 727 | { |
4d3c2250 | 728 | complaint (&symfile_complaints, |
e2e0b3e5 | 729 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
730 | } |
731 | ||
732 | static void | |
733 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 734 | { |
4d3c2250 | 735 | complaint (&symfile_complaints, |
e2e0b3e5 | 736 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
737 | arg1); |
738 | } | |
739 | ||
740 | static void | |
741 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 742 | { |
4d3c2250 | 743 | complaint (&symfile_complaints, |
e2e0b3e5 | 744 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 745 | } |
c906108c | 746 | |
c906108c SS |
747 | /* local function prototypes */ |
748 | ||
4efb68b1 | 749 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
750 | |
751 | #if 0 | |
a14ed312 | 752 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
753 | #endif |
754 | ||
aaa75496 JB |
755 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
756 | struct objfile *); | |
757 | ||
758 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
759 | struct partial_die_info *, | |
760 | struct partial_symtab *); | |
761 | ||
a14ed312 | 762 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 763 | |
72bf9492 DJ |
764 | static void scan_partial_symbols (struct partial_die_info *, |
765 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 766 | int, struct dwarf2_cu *); |
c906108c | 767 | |
72bf9492 DJ |
768 | static void add_partial_symbol (struct partial_die_info *, |
769 | struct dwarf2_cu *); | |
63d06c5c | 770 | |
72bf9492 | 771 | static int pdi_needs_namespace (enum dwarf_tag tag); |
91c24f0a | 772 | |
72bf9492 DJ |
773 | static void add_partial_namespace (struct partial_die_info *pdi, |
774 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 775 | int need_pc, struct dwarf2_cu *cu); |
63d06c5c | 776 | |
5d7cb8df JK |
777 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
778 | CORE_ADDR *highpc, int need_pc, | |
779 | struct dwarf2_cu *cu); | |
780 | ||
72bf9492 DJ |
781 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
782 | struct dwarf2_cu *cu); | |
91c24f0a | 783 | |
bc30ff58 JB |
784 | static void add_partial_subprogram (struct partial_die_info *pdi, |
785 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 786 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 787 | |
fe1b8b76 JB |
788 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
789 | gdb_byte *info_ptr, | |
790 | bfd *abfd, | |
791 | struct dwarf2_cu *cu); | |
91c24f0a | 792 | |
a14ed312 | 793 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 794 | |
a14ed312 | 795 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 796 | |
fe1b8b76 | 797 | gdb_byte *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 798 | |
e7c27a73 | 799 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 800 | |
f3dd6933 | 801 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 802 | |
fe1b8b76 | 803 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 804 | struct dwarf2_cu *); |
72bf9492 | 805 | |
57349743 | 806 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 807 | struct dwarf2_cu *); |
c906108c | 808 | |
fe1b8b76 | 809 | static struct partial_die_info *load_partial_dies (bfd *, gdb_byte *, int, |
72bf9492 DJ |
810 | struct dwarf2_cu *); |
811 | ||
fe1b8b76 JB |
812 | static gdb_byte *read_partial_die (struct partial_die_info *, |
813 | struct abbrev_info *abbrev, unsigned int, | |
814 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 815 | |
c764a876 | 816 | static struct partial_die_info *find_partial_die (unsigned int, |
10b3939b | 817 | struct dwarf2_cu *); |
72bf9492 DJ |
818 | |
819 | static void fixup_partial_die (struct partial_die_info *, | |
820 | struct dwarf2_cu *); | |
821 | ||
fe1b8b76 JB |
822 | static gdb_byte *read_full_die (struct die_info **, bfd *, gdb_byte *, |
823 | struct dwarf2_cu *, int *); | |
c906108c | 824 | |
fe1b8b76 JB |
825 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
826 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 827 | |
fe1b8b76 JB |
828 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
829 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 830 | |
fe1b8b76 | 831 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 832 | |
fe1b8b76 | 833 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 834 | |
fe1b8b76 | 835 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 836 | |
fe1b8b76 | 837 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 838 | |
fe1b8b76 | 839 | static unsigned long read_8_bytes (bfd *, gdb_byte *); |
c906108c | 840 | |
fe1b8b76 | 841 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 842 | unsigned int *); |
c906108c | 843 | |
c764a876 DE |
844 | static LONGEST read_initial_length (bfd *, gdb_byte *, unsigned int *); |
845 | ||
846 | static LONGEST read_checked_initial_length_and_offset | |
847 | (bfd *, gdb_byte *, const struct comp_unit_head *, | |
848 | unsigned int *, unsigned int *); | |
613e1657 | 849 | |
fe1b8b76 | 850 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
c764a876 DE |
851 | unsigned int *); |
852 | ||
853 | static LONGEST read_offset_1 (bfd *, gdb_byte *, unsigned int); | |
613e1657 | 854 | |
fe1b8b76 | 855 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 856 | |
fe1b8b76 | 857 | static char *read_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 858 | |
fe1b8b76 JB |
859 | static char *read_indirect_string (bfd *, gdb_byte *, |
860 | const struct comp_unit_head *, | |
861 | unsigned int *); | |
4bdf3d34 | 862 | |
fe1b8b76 | 863 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 864 | |
fe1b8b76 | 865 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 866 | |
fe1b8b76 | 867 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 868 | |
e142c38c | 869 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 870 | |
e142c38c DJ |
871 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
872 | struct dwarf2_cu *); | |
c906108c | 873 | |
05cf31d1 JB |
874 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
875 | struct dwarf2_cu *cu); | |
876 | ||
e142c38c | 877 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 878 | |
e142c38c | 879 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 880 | struct dwarf2_cu **); |
63d06c5c | 881 | |
debd256d JB |
882 | static void free_line_header (struct line_header *lh); |
883 | ||
aaa75496 JB |
884 | static void add_file_name (struct line_header *, char *, unsigned int, |
885 | unsigned int, unsigned int); | |
886 | ||
debd256d JB |
887 | static struct line_header *(dwarf_decode_line_header |
888 | (unsigned int offset, | |
e7c27a73 | 889 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
890 | |
891 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 892 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 893 | |
4f1520fb | 894 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 895 | |
a14ed312 | 896 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 897 | struct dwarf2_cu *); |
c906108c | 898 | |
a14ed312 | 899 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 900 | struct dwarf2_cu *); |
c906108c | 901 | |
2df3850c JM |
902 | static void dwarf2_const_value_data (struct attribute *attr, |
903 | struct symbol *sym, | |
904 | int bits); | |
905 | ||
e7c27a73 | 906 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 907 | |
e7c27a73 DJ |
908 | static struct type *die_containing_type (struct die_info *, |
909 | struct dwarf2_cu *); | |
c906108c | 910 | |
e7c27a73 | 911 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 912 | |
f792889a | 913 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 914 | |
086ed43d | 915 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 916 | |
fe1b8b76 JB |
917 | static char *typename_concat (struct obstack *, |
918 | const char *prefix, | |
919 | const char *suffix, | |
987504bb | 920 | struct dwarf2_cu *); |
63d06c5c | 921 | |
e7c27a73 | 922 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 923 | |
e7c27a73 | 924 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 925 | |
e7c27a73 | 926 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 927 | |
ff013f42 JK |
928 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
929 | struct dwarf2_cu *, struct partial_symtab *); | |
930 | ||
a14ed312 | 931 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 932 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 933 | |
fae299cd DC |
934 | static void get_scope_pc_bounds (struct die_info *, |
935 | CORE_ADDR *, CORE_ADDR *, | |
936 | struct dwarf2_cu *); | |
937 | ||
801e3a5b JB |
938 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
939 | CORE_ADDR, struct dwarf2_cu *); | |
940 | ||
a14ed312 | 941 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 942 | struct dwarf2_cu *); |
c906108c | 943 | |
a14ed312 | 944 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 945 | struct type *, struct dwarf2_cu *); |
c906108c | 946 | |
a14ed312 | 947 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 948 | struct die_info *, struct type *, |
e7c27a73 | 949 | struct dwarf2_cu *); |
c906108c | 950 | |
a14ed312 | 951 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 952 | struct type *, struct dwarf2_cu *); |
c906108c | 953 | |
134d01f1 | 954 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 955 | |
0114d602 DJ |
956 | static const char *determine_class_name (struct die_info *die, |
957 | struct dwarf2_cu *cu); | |
8176b9b8 | 958 | |
e7c27a73 | 959 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 960 | |
e7c27a73 | 961 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 962 | |
5d7cb8df JK |
963 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
964 | ||
38d518c9 | 965 | static const char *namespace_name (struct die_info *die, |
e142c38c | 966 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 967 | |
134d01f1 | 968 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 969 | |
e7c27a73 | 970 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 971 | |
7ca2d3a3 DL |
972 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
973 | struct dwarf2_cu *); | |
974 | ||
fe1b8b76 | 975 | static struct die_info *read_comp_unit (gdb_byte *, bfd *, struct dwarf2_cu *); |
c906108c | 976 | |
d97bc12b DE |
977 | static struct die_info *read_die_and_children_1 (gdb_byte *info_ptr, bfd *abfd, |
978 | struct dwarf2_cu *, | |
979 | gdb_byte **new_info_ptr, | |
980 | struct die_info *parent); | |
981 | ||
fe1b8b76 | 982 | static struct die_info *read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 983 | struct dwarf2_cu *, |
fe1b8b76 | 984 | gdb_byte **new_info_ptr, |
639d11d3 DC |
985 | struct die_info *parent); |
986 | ||
fe1b8b76 | 987 | static struct die_info *read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 988 | struct dwarf2_cu *, |
fe1b8b76 | 989 | gdb_byte **new_info_ptr, |
639d11d3 DC |
990 | struct die_info *parent); |
991 | ||
e7c27a73 | 992 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 993 | |
e142c38c | 994 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 995 | |
e142c38c | 996 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 997 | |
e142c38c | 998 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 999 | struct dwarf2_cu **); |
9219021c | 1000 | |
a14ed312 | 1001 | static char *dwarf_tag_name (unsigned int); |
c906108c | 1002 | |
a14ed312 | 1003 | static char *dwarf_attr_name (unsigned int); |
c906108c | 1004 | |
a14ed312 | 1005 | static char *dwarf_form_name (unsigned int); |
c906108c | 1006 | |
a14ed312 | 1007 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 1008 | |
a14ed312 | 1009 | static char *dwarf_bool_name (unsigned int); |
c906108c | 1010 | |
a14ed312 | 1011 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
1012 | |
1013 | #if 0 | |
a14ed312 | 1014 | static char *dwarf_cfi_name (unsigned int); |
c906108c SS |
1015 | #endif |
1016 | ||
f9aca02d | 1017 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1018 | |
d97bc12b DE |
1019 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1020 | ||
1021 | static void dump_die_for_error (struct die_info *); | |
1022 | ||
1023 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1024 | struct die_info *); | |
c906108c | 1025 | |
d97bc12b | 1026 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1027 | |
51545339 | 1028 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1029 | struct dwarf2_cu *); |
c906108c | 1030 | |
c764a876 | 1031 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *); |
c906108c | 1032 | |
a02abb62 JB |
1033 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
1034 | ||
10b3939b DJ |
1035 | static struct die_info *follow_die_ref (struct die_info *, |
1036 | struct attribute *, | |
f2f0e013 | 1037 | struct dwarf2_cu **); |
c906108c | 1038 | |
c906108c SS |
1039 | /* memory allocation interface */ |
1040 | ||
7b5a2f43 | 1041 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1042 | |
f3dd6933 | 1043 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1044 | |
b60c80d6 | 1045 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1046 | |
e142c38c | 1047 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1048 | |
e142c38c DJ |
1049 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1050 | struct dwarf2_cu *); | |
5fb290d7 | 1051 | |
2e276125 | 1052 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1053 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1054 | |
8e19ed76 PS |
1055 | static int attr_form_is_block (struct attribute *); |
1056 | ||
3690dd37 JB |
1057 | static int attr_form_is_section_offset (struct attribute *); |
1058 | ||
1059 | static int attr_form_is_constant (struct attribute *); | |
1060 | ||
93e7bd98 DJ |
1061 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1062 | struct symbol *sym, | |
1063 | struct dwarf2_cu *cu); | |
4c2df51b | 1064 | |
fe1b8b76 JB |
1065 | static gdb_byte *skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, |
1066 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1067 | |
72bf9492 DJ |
1068 | static void free_stack_comp_unit (void *); |
1069 | ||
72bf9492 DJ |
1070 | static hashval_t partial_die_hash (const void *item); |
1071 | ||
1072 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1073 | ||
ae038cb0 | 1074 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
c764a876 | 1075 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 DJ |
1076 | |
1077 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
c764a876 | 1078 | (unsigned int offset, struct objfile *objfile); |
ae038cb0 DJ |
1079 | |
1080 | static void free_one_comp_unit (void *); | |
1081 | ||
1082 | static void free_cached_comp_units (void *); | |
1083 | ||
1084 | static void age_cached_comp_units (void); | |
1085 | ||
1086 | static void free_one_cached_comp_unit (void *); | |
1087 | ||
f792889a DJ |
1088 | static struct type *set_die_type (struct die_info *, struct type *, |
1089 | struct dwarf2_cu *); | |
1c379e20 | 1090 | |
ae038cb0 DJ |
1091 | static void create_all_comp_units (struct objfile *); |
1092 | ||
31ffec48 DJ |
1093 | static struct dwarf2_cu *load_full_comp_unit (struct dwarf2_per_cu_data *, |
1094 | struct objfile *); | |
10b3939b DJ |
1095 | |
1096 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1097 | ||
1098 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1099 | struct dwarf2_per_cu_data *); | |
1100 | ||
ae038cb0 DJ |
1101 | static void dwarf2_mark (struct dwarf2_cu *); |
1102 | ||
1103 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1104 | ||
f792889a | 1105 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1106 | |
c906108c SS |
1107 | /* Try to locate the sections we need for DWARF 2 debugging |
1108 | information and return true if we have enough to do something. */ | |
1109 | ||
1110 | int | |
6502dd73 | 1111 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1112 | { |
6502dd73 DJ |
1113 | struct dwarf2_per_objfile *data; |
1114 | ||
1115 | /* Initialize per-objfile state. */ | |
1116 | data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
1117 | memset (data, 0, sizeof (*data)); | |
1118 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1119 | dwarf2_per_objfile = data; | |
1120 | ||
188dd5d6 DJ |
1121 | dwarf_info_section = 0; |
1122 | dwarf_abbrev_section = 0; | |
1123 | dwarf_line_section = 0; | |
1124 | dwarf_str_section = 0; | |
1125 | dwarf_macinfo_section = 0; | |
1126 | dwarf_frame_section = 0; | |
1127 | dwarf_eh_frame_section = 0; | |
1128 | dwarf_ranges_section = 0; | |
1129 | dwarf_loc_section = 0; | |
af34e669 | 1130 | |
6502dd73 | 1131 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 1132 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
1133 | } |
1134 | ||
233a11ab CS |
1135 | /* When loading sections, we can either look for ".<name>", or for |
1136 | * ".z<name>", which indicates a compressed section. */ | |
1137 | ||
1138 | static int | |
1139 | section_is_p (asection *sectp, const char *name) | |
1140 | { | |
1141 | return ((sectp->name[0] == '.' | |
1142 | && strcmp (sectp->name + 1, name) == 0) | |
1143 | || (sectp->name[0] == '.' && sectp->name[1] == 'z' | |
1144 | && strcmp (sectp->name + 2, name) == 0)); | |
1145 | } | |
1146 | ||
c906108c SS |
1147 | /* This function is mapped across the sections and remembers the |
1148 | offset and size of each of the debugging sections we are interested | |
1149 | in. */ | |
1150 | ||
1151 | static void | |
72dca2f5 | 1152 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1153 | { |
233a11ab | 1154 | if (section_is_p (sectp, INFO_SECTION)) |
c906108c | 1155 | { |
2c500098 | 1156 | dwarf2_per_objfile->info_size = bfd_get_section_size (sectp); |
086df311 | 1157 | dwarf_info_section = sectp; |
c906108c | 1158 | } |
233a11ab | 1159 | else if (section_is_p (sectp, ABBREV_SECTION)) |
c906108c | 1160 | { |
2c500098 | 1161 | dwarf2_per_objfile->abbrev_size = bfd_get_section_size (sectp); |
086df311 | 1162 | dwarf_abbrev_section = sectp; |
c906108c | 1163 | } |
233a11ab | 1164 | else if (section_is_p (sectp, LINE_SECTION)) |
c906108c | 1165 | { |
2c500098 | 1166 | dwarf2_per_objfile->line_size = bfd_get_section_size (sectp); |
086df311 | 1167 | dwarf_line_section = sectp; |
c906108c | 1168 | } |
233a11ab | 1169 | else if (section_is_p (sectp, PUBNAMES_SECTION)) |
c906108c | 1170 | { |
2c500098 | 1171 | dwarf2_per_objfile->pubnames_size = bfd_get_section_size (sectp); |
086df311 | 1172 | dwarf_pubnames_section = sectp; |
c906108c | 1173 | } |
233a11ab | 1174 | else if (section_is_p (sectp, ARANGES_SECTION)) |
c906108c | 1175 | { |
2c500098 | 1176 | dwarf2_per_objfile->aranges_size = bfd_get_section_size (sectp); |
086df311 | 1177 | dwarf_aranges_section = sectp; |
c906108c | 1178 | } |
233a11ab | 1179 | else if (section_is_p (sectp, LOC_SECTION)) |
c906108c | 1180 | { |
2c500098 | 1181 | dwarf2_per_objfile->loc_size = bfd_get_section_size (sectp); |
086df311 | 1182 | dwarf_loc_section = sectp; |
c906108c | 1183 | } |
233a11ab | 1184 | else if (section_is_p (sectp, MACINFO_SECTION)) |
c906108c | 1185 | { |
2c500098 | 1186 | dwarf2_per_objfile->macinfo_size = bfd_get_section_size (sectp); |
0cf824c9 | 1187 | dwarf_macinfo_section = sectp; |
c906108c | 1188 | } |
233a11ab | 1189 | else if (section_is_p (sectp, STR_SECTION)) |
c906108c | 1190 | { |
2c500098 | 1191 | dwarf2_per_objfile->str_size = bfd_get_section_size (sectp); |
086df311 | 1192 | dwarf_str_section = sectp; |
c906108c | 1193 | } |
233a11ab | 1194 | else if (section_is_p (sectp, FRAME_SECTION)) |
b6af0555 | 1195 | { |
2c500098 | 1196 | dwarf2_per_objfile->frame_size = bfd_get_section_size (sectp); |
086df311 | 1197 | dwarf_frame_section = sectp; |
b6af0555 | 1198 | } |
233a11ab | 1199 | else if (section_is_p (sectp, EH_FRAME_SECTION)) |
b6af0555 | 1200 | { |
3799ccc6 EZ |
1201 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1202 | if (aflag & SEC_HAS_CONTENTS) | |
1203 | { | |
2c500098 | 1204 | dwarf2_per_objfile->eh_frame_size = bfd_get_section_size (sectp); |
3799ccc6 EZ |
1205 | dwarf_eh_frame_section = sectp; |
1206 | } | |
b6af0555 | 1207 | } |
233a11ab | 1208 | else if (section_is_p (sectp, RANGES_SECTION)) |
af34e669 | 1209 | { |
2c500098 | 1210 | dwarf2_per_objfile->ranges_size = bfd_get_section_size (sectp); |
6f10aeb1 | 1211 | dwarf_ranges_section = sectp; |
af34e669 | 1212 | } |
72dca2f5 FR |
1213 | |
1214 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) | |
1215 | && bfd_section_vma (abfd, sectp) == 0) | |
1216 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1217 | } |
1218 | ||
233a11ab CS |
1219 | /* This function is called after decompressing a section, so |
1220 | dwarf2_per_objfile can record its new, uncompressed size. */ | |
1221 | ||
1222 | static void | |
1223 | dwarf2_resize_section (asection *sectp, bfd_size_type new_size) | |
1224 | { | |
1225 | if (section_is_p (sectp, INFO_SECTION)) | |
1226 | dwarf2_per_objfile->info_size = new_size; | |
1227 | else if (section_is_p (sectp, ABBREV_SECTION)) | |
1228 | dwarf2_per_objfile->abbrev_size = new_size; | |
1229 | else if (section_is_p (sectp, LINE_SECTION)) | |
1230 | dwarf2_per_objfile->line_size = new_size; | |
1231 | else if (section_is_p (sectp, PUBNAMES_SECTION)) | |
1232 | dwarf2_per_objfile->pubnames_size = new_size; | |
1233 | else if (section_is_p (sectp, ARANGES_SECTION)) | |
1234 | dwarf2_per_objfile->aranges_size = new_size; | |
1235 | else if (section_is_p (sectp, LOC_SECTION)) | |
1236 | dwarf2_per_objfile->loc_size = new_size; | |
1237 | else if (section_is_p (sectp, MACINFO_SECTION)) | |
1238 | dwarf2_per_objfile->macinfo_size = new_size; | |
1239 | else if (section_is_p (sectp, STR_SECTION)) | |
1240 | dwarf2_per_objfile->str_size = new_size; | |
1241 | else if (section_is_p (sectp, FRAME_SECTION)) | |
1242 | dwarf2_per_objfile->frame_size = new_size; | |
1243 | else if (section_is_p (sectp, EH_FRAME_SECTION)) | |
1244 | dwarf2_per_objfile->eh_frame_size = new_size; | |
1245 | else if (section_is_p (sectp, RANGES_SECTION)) | |
1246 | dwarf2_per_objfile->ranges_size = new_size; | |
1247 | else | |
1248 | internal_error (__FILE__, __LINE__, | |
1249 | _("dwarf2_resize_section: missing section_is_p check: %s"), | |
1250 | sectp->name); | |
1251 | } | |
1252 | ||
c906108c SS |
1253 | /* Build a partial symbol table. */ |
1254 | ||
1255 | void | |
fba45db2 | 1256 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c | 1257 | { |
c906108c SS |
1258 | /* We definitely need the .debug_info and .debug_abbrev sections */ |
1259 | ||
6502dd73 DJ |
1260 | dwarf2_per_objfile->info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1261 | dwarf2_per_objfile->abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
188dd5d6 DJ |
1262 | |
1263 | if (dwarf_line_section) | |
6502dd73 | 1264 | dwarf2_per_objfile->line_buffer = dwarf2_read_section (objfile, dwarf_line_section); |
41ff2da1 | 1265 | else |
6502dd73 | 1266 | dwarf2_per_objfile->line_buffer = NULL; |
c906108c | 1267 | |
188dd5d6 | 1268 | if (dwarf_str_section) |
6502dd73 | 1269 | dwarf2_per_objfile->str_buffer = dwarf2_read_section (objfile, dwarf_str_section); |
4bdf3d34 | 1270 | else |
6502dd73 | 1271 | dwarf2_per_objfile->str_buffer = NULL; |
4bdf3d34 | 1272 | |
188dd5d6 | 1273 | if (dwarf_macinfo_section) |
6502dd73 | 1274 | dwarf2_per_objfile->macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1275 | dwarf_macinfo_section); |
2e276125 | 1276 | else |
6502dd73 | 1277 | dwarf2_per_objfile->macinfo_buffer = NULL; |
2e276125 | 1278 | |
188dd5d6 | 1279 | if (dwarf_ranges_section) |
6502dd73 | 1280 | dwarf2_per_objfile->ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); |
af34e669 | 1281 | else |
6502dd73 | 1282 | dwarf2_per_objfile->ranges_buffer = NULL; |
af34e669 | 1283 | |
188dd5d6 | 1284 | if (dwarf_loc_section) |
6502dd73 | 1285 | dwarf2_per_objfile->loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); |
0d53c4c4 | 1286 | else |
6502dd73 | 1287 | dwarf2_per_objfile->loc_buffer = NULL; |
0d53c4c4 | 1288 | |
ef96bde8 EZ |
1289 | if (mainline |
1290 | || (objfile->global_psymbols.size == 0 | |
1291 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1292 | { |
1293 | init_psymbol_list (objfile, 1024); | |
1294 | } | |
1295 | ||
1296 | #if 0 | |
1297 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1298 | { | |
d4f3574e | 1299 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1300 | .debug_pubnames sections */ |
1301 | ||
d4f3574e | 1302 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1303 | } |
1304 | else | |
1305 | #endif | |
1306 | /* only test this case for now */ | |
c5aa993b | 1307 | { |
c906108c | 1308 | /* In this case we have to work a bit harder */ |
d4f3574e | 1309 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1310 | } |
1311 | } | |
1312 | ||
1313 | #if 0 | |
1314 | /* Build the partial symbol table from the information in the | |
1315 | .debug_pubnames and .debug_aranges sections. */ | |
1316 | ||
1317 | static void | |
fba45db2 | 1318 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1319 | { |
1320 | bfd *abfd = objfile->obfd; | |
1321 | char *aranges_buffer, *pubnames_buffer; | |
1322 | char *aranges_ptr, *pubnames_ptr; | |
1323 | unsigned int entry_length, version, info_offset, info_size; | |
1324 | ||
1325 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1326 | dwarf_pubnames_section); |
c906108c | 1327 | pubnames_ptr = pubnames_buffer; |
6502dd73 | 1328 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames_size) |
c906108c | 1329 | { |
891d2f0b | 1330 | unsigned int bytes_read; |
613e1657 | 1331 | |
c764a876 | 1332 | entry_length = read_initial_length (abfd, pubnames_ptr, &bytes_read); |
613e1657 | 1333 | pubnames_ptr += bytes_read; |
c906108c SS |
1334 | version = read_1_byte (abfd, pubnames_ptr); |
1335 | pubnames_ptr += 1; | |
1336 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1337 | pubnames_ptr += 4; | |
1338 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1339 | pubnames_ptr += 4; | |
1340 | } | |
1341 | ||
1342 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1343 | dwarf_aranges_section); |
c906108c SS |
1344 | |
1345 | } | |
1346 | #endif | |
1347 | ||
45452591 DE |
1348 | /* Return TRUE if OFFSET is within CU_HEADER. */ |
1349 | ||
1350 | static inline int | |
1351 | offset_in_cu_p (const struct comp_unit_head *cu_header, unsigned int offset) | |
1352 | { | |
1353 | unsigned int bottom = cu_header->offset; | |
1354 | unsigned int top = (cu_header->offset | |
1355 | + cu_header->length | |
1356 | + cu_header->initial_length_size); | |
1357 | return (offset >= bottom && offset < top); | |
1358 | } | |
1359 | ||
107d2387 | 1360 | /* Read in the comp unit header information from the debug_info at |
917c78fc | 1361 | info_ptr. */ |
107d2387 | 1362 | |
fe1b8b76 | 1363 | static gdb_byte * |
107d2387 | 1364 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 1365 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
1366 | { |
1367 | int signed_addr; | |
891d2f0b | 1368 | unsigned int bytes_read; |
c764a876 DE |
1369 | |
1370 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
1371 | cu_header->initial_length_size = bytes_read; | |
1372 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 1373 | info_ptr += bytes_read; |
107d2387 AC |
1374 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1375 | info_ptr += 2; | |
613e1657 | 1376 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
c764a876 | 1377 | &bytes_read); |
613e1657 | 1378 | info_ptr += bytes_read; |
107d2387 AC |
1379 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1380 | info_ptr += 1; | |
1381 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1382 | if (signed_addr < 0) | |
8e65ff28 | 1383 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1384 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 1385 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 1386 | |
107d2387 AC |
1387 | return info_ptr; |
1388 | } | |
1389 | ||
fe1b8b76 JB |
1390 | static gdb_byte * |
1391 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
72bf9492 DJ |
1392 | bfd *abfd) |
1393 | { | |
fe1b8b76 | 1394 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
1395 | |
1396 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1397 | ||
2b949cb6 | 1398 | if (header->version != 2 && header->version != 3) |
8a3fe4f8 AC |
1399 | error (_("Dwarf Error: wrong version in compilation unit header " |
1400 | "(is %d, should be %d) [in module %s]"), header->version, | |
72bf9492 DJ |
1401 | 2, bfd_get_filename (abfd)); |
1402 | ||
1403 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev_size) | |
8a3fe4f8 AC |
1404 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
1405 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 DJ |
1406 | (long) header->abbrev_offset, |
1407 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1408 | bfd_get_filename (abfd)); | |
1409 | ||
1410 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
1411 | > dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
8a3fe4f8 AC |
1412 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
1413 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 DJ |
1414 | (long) header->length, |
1415 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1416 | bfd_get_filename (abfd)); | |
1417 | ||
1418 | return info_ptr; | |
1419 | } | |
1420 | ||
aaa75496 JB |
1421 | /* Allocate a new partial symtab for file named NAME and mark this new |
1422 | partial symtab as being an include of PST. */ | |
1423 | ||
1424 | static void | |
1425 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1426 | struct objfile *objfile) | |
1427 | { | |
1428 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1429 | ||
1430 | subpst->section_offsets = pst->section_offsets; | |
1431 | subpst->textlow = 0; | |
1432 | subpst->texthigh = 0; | |
1433 | ||
1434 | subpst->dependencies = (struct partial_symtab **) | |
1435 | obstack_alloc (&objfile->objfile_obstack, | |
1436 | sizeof (struct partial_symtab *)); | |
1437 | subpst->dependencies[0] = pst; | |
1438 | subpst->number_of_dependencies = 1; | |
1439 | ||
1440 | subpst->globals_offset = 0; | |
1441 | subpst->n_global_syms = 0; | |
1442 | subpst->statics_offset = 0; | |
1443 | subpst->n_static_syms = 0; | |
1444 | subpst->symtab = NULL; | |
1445 | subpst->read_symtab = pst->read_symtab; | |
1446 | subpst->readin = 0; | |
1447 | ||
1448 | /* No private part is necessary for include psymtabs. This property | |
1449 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1450 | the regular ones. */ |
58a9656e | 1451 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1452 | } |
1453 | ||
1454 | /* Read the Line Number Program data and extract the list of files | |
1455 | included by the source file represented by PST. Build an include | |
1456 | partial symtab for each of these included files. | |
1457 | ||
1458 | This procedure assumes that there *is* a Line Number Program in | |
1459 | the given CU. Callers should check that PDI->HAS_STMT_LIST is set | |
1460 | before calling this procedure. */ | |
1461 | ||
1462 | static void | |
1463 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
1464 | struct partial_die_info *pdi, | |
1465 | struct partial_symtab *pst) | |
1466 | { | |
1467 | struct objfile *objfile = cu->objfile; | |
1468 | bfd *abfd = objfile->obfd; | |
1469 | struct line_header *lh; | |
1470 | ||
1471 | lh = dwarf_decode_line_header (pdi->line_offset, abfd, cu); | |
1472 | if (lh == NULL) | |
1473 | return; /* No linetable, so no includes. */ | |
1474 | ||
1475 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1476 | ||
1477 | free_line_header (lh); | |
1478 | } | |
1479 | ||
1480 | ||
c906108c SS |
1481 | /* Build the partial symbol table by doing a quick pass through the |
1482 | .debug_info and .debug_abbrev sections. */ | |
1483 | ||
1484 | static void | |
fba45db2 | 1485 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1486 | { |
1487 | /* Instead of reading this into a big buffer, we should probably use | |
1488 | mmap() on architectures that support it. (FIXME) */ | |
1489 | bfd *abfd = objfile->obfd; | |
fe1b8b76 JB |
1490 | gdb_byte *info_ptr; |
1491 | gdb_byte *beg_of_comp_unit; | |
c906108c SS |
1492 | struct partial_die_info comp_unit_die; |
1493 | struct partial_symtab *pst; | |
ae038cb0 | 1494 | struct cleanup *back_to; |
5734ee8b | 1495 | CORE_ADDR baseaddr; |
c906108c | 1496 | |
6502dd73 | 1497 | info_ptr = dwarf2_per_objfile->info_buffer; |
c906108c | 1498 | |
ae038cb0 DJ |
1499 | /* Any cached compilation units will be linked by the per-objfile |
1500 | read_in_chain. Make sure to free them when we're done. */ | |
1501 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
1502 | ||
10b3939b DJ |
1503 | create_all_comp_units (objfile); |
1504 | ||
ff013f42 JK |
1505 | objfile->psymtabs_addrmap = addrmap_create_mutable |
1506 | (&objfile->objfile_obstack); | |
1507 | ||
6502dd73 | 1508 | /* Since the objects we're extracting from .debug_info vary in |
af703f96 | 1509 | length, only the individual functions to extract them (like |
72bf9492 | 1510 | read_comp_unit_head and load_partial_die) can really know whether |
af703f96 JB |
1511 | the buffer is large enough to hold another complete object. |
1512 | ||
6502dd73 DJ |
1513 | At the moment, they don't actually check that. If .debug_info |
1514 | holds just one extra byte after the last compilation unit's dies, | |
1515 | then read_comp_unit_head will happily read off the end of the | |
1516 | buffer. read_partial_die is similarly casual. Those functions | |
1517 | should be fixed. | |
af703f96 JB |
1518 | |
1519 | For this loop condition, simply checking whether there's any data | |
1520 | left at all should be sufficient. */ | |
6502dd73 DJ |
1521 | while (info_ptr < (dwarf2_per_objfile->info_buffer |
1522 | + dwarf2_per_objfile->info_size)) | |
c906108c | 1523 | { |
f3dd6933 | 1524 | struct cleanup *back_to_inner; |
e7c27a73 | 1525 | struct dwarf2_cu cu; |
72bf9492 DJ |
1526 | struct abbrev_info *abbrev; |
1527 | unsigned int bytes_read; | |
1528 | struct dwarf2_per_cu_data *this_cu; | |
1529 | ||
c906108c | 1530 | beg_of_comp_unit = info_ptr; |
c906108c | 1531 | |
72bf9492 DJ |
1532 | memset (&cu, 0, sizeof (cu)); |
1533 | ||
1534 | obstack_init (&cu.comp_unit_obstack); | |
1535 | ||
1536 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); | |
1537 | ||
e7c27a73 | 1538 | cu.objfile = objfile; |
72bf9492 | 1539 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, abfd); |
e7c27a73 | 1540 | |
57349743 | 1541 | /* Complete the cu_header */ |
6502dd73 | 1542 | cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
d00adf39 | 1543 | cu.header.first_die_offset = info_ptr - beg_of_comp_unit; |
57349743 | 1544 | |
e142c38c DJ |
1545 | cu.list_in_scope = &file_symbols; |
1546 | ||
c906108c | 1547 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1548 | dwarf2_read_abbrevs (abfd, &cu); |
72bf9492 | 1549 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1550 | |
10b3939b | 1551 | this_cu = dwarf2_find_comp_unit (cu.header.offset, objfile); |
ae038cb0 | 1552 | |
c906108c | 1553 | /* Read the compilation unit die */ |
72bf9492 DJ |
1554 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, &cu); |
1555 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1556 | abfd, info_ptr, &cu); | |
c906108c | 1557 | |
31ffec48 DJ |
1558 | if (comp_unit_die.tag == DW_TAG_partial_unit) |
1559 | { | |
1560 | info_ptr = (beg_of_comp_unit + cu.header.length | |
1561 | + cu.header.initial_length_size); | |
1562 | do_cleanups (back_to_inner); | |
1563 | continue; | |
1564 | } | |
1565 | ||
c906108c | 1566 | /* Set the language we're debugging */ |
e142c38c | 1567 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1568 | |
1569 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1570 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1571 | comp_unit_die.name ? comp_unit_die.name : "", |
ff013f42 JK |
1572 | /* TEXTLOW and TEXTHIGH are set below. */ |
1573 | 0, | |
c906108c SS |
1574 | objfile->global_psymbols.next, |
1575 | objfile->static_psymbols.next); | |
1576 | ||
ae038cb0 | 1577 | if (comp_unit_die.dirname) |
a683b3c0 TT |
1578 | pst->dirname = obsavestring (comp_unit_die.dirname, |
1579 | strlen (comp_unit_die.dirname), | |
1580 | &objfile->objfile_obstack); | |
57c22c6c | 1581 | |
10b3939b DJ |
1582 | pst->read_symtab_private = (char *) this_cu; |
1583 | ||
613e1657 | 1584 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1585 | |
1586 | /* Store the function that reads in the rest of the symbol table */ | |
1587 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1588 | ||
10b3939b DJ |
1589 | /* If this compilation unit was already read in, free the |
1590 | cached copy in order to read it in again. This is | |
1591 | necessary because we skipped some symbols when we first | |
1592 | read in the compilation unit (see load_partial_dies). | |
1593 | This problem could be avoided, but the benefit is | |
1594 | unclear. */ | |
1595 | if (this_cu->cu != NULL) | |
1596 | free_one_cached_comp_unit (this_cu->cu); | |
ae038cb0 | 1597 | |
10b3939b | 1598 | cu.per_cu = this_cu; |
ae038cb0 | 1599 | |
10b3939b DJ |
1600 | /* Note that this is a pointer to our stack frame, being |
1601 | added to a global data structure. It will be cleaned up | |
1602 | in free_stack_comp_unit when we finish with this | |
1603 | compilation unit. */ | |
1604 | this_cu->cu = &cu; | |
ae038cb0 | 1605 | |
10b3939b | 1606 | this_cu->psymtab = pst; |
ae038cb0 | 1607 | |
ff013f42 JK |
1608 | /* Possibly set the default values of LOWPC and HIGHPC from |
1609 | `DW_AT_ranges'. */ | |
1610 | if (cu.has_ranges_offset) | |
1611 | { | |
1612 | if (dwarf2_ranges_read (cu.ranges_offset, &comp_unit_die.lowpc, | |
1613 | &comp_unit_die.highpc, &cu, pst)) | |
1614 | comp_unit_die.has_pc_info = 1; | |
1615 | } | |
5734ee8b DJ |
1616 | else if (comp_unit_die.has_pc_info |
1617 | && comp_unit_die.lowpc < comp_unit_die.highpc) | |
1618 | /* Store the contiguous range if it is not empty; it can be empty for | |
1619 | CUs with no code. */ | |
1620 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
1621 | comp_unit_die.lowpc + baseaddr, | |
1622 | comp_unit_die.highpc + baseaddr - 1, pst); | |
ff013f42 | 1623 | |
c906108c SS |
1624 | /* Check if comp unit has_children. |
1625 | If so, read the rest of the partial symbols from this comp unit. | |
1626 | If not, there's no more debug_info for this comp unit. */ | |
1627 | if (comp_unit_die.has_children) | |
1628 | { | |
72bf9492 | 1629 | struct partial_die_info *first_die; |
5734ee8b | 1630 | CORE_ADDR lowpc, highpc; |
72bf9492 | 1631 | |
91c24f0a DC |
1632 | lowpc = ((CORE_ADDR) -1); |
1633 | highpc = ((CORE_ADDR) 0); | |
1634 | ||
72bf9492 DJ |
1635 | first_die = load_partial_dies (abfd, info_ptr, 1, &cu); |
1636 | ||
5734ee8b DJ |
1637 | scan_partial_symbols (first_die, &lowpc, &highpc, |
1638 | ! comp_unit_die.has_pc_info, &cu); | |
c906108c | 1639 | |
91c24f0a DC |
1640 | /* If we didn't find a lowpc, set it to highpc to avoid |
1641 | complaints from `maint check'. */ | |
1642 | if (lowpc == ((CORE_ADDR) -1)) | |
1643 | lowpc = highpc; | |
72bf9492 | 1644 | |
c906108c SS |
1645 | /* If the compilation unit didn't have an explicit address range, |
1646 | then use the information extracted from its child dies. */ | |
0b010bcc | 1647 | if (! comp_unit_die.has_pc_info) |
c906108c | 1648 | { |
c5aa993b | 1649 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1650 | comp_unit_die.highpc = highpc; |
1651 | } | |
1652 | } | |
c5aa993b | 1653 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1654 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1655 | ||
1656 | pst->n_global_syms = objfile->global_psymbols.next - | |
1657 | (objfile->global_psymbols.list + pst->globals_offset); | |
1658 | pst->n_static_syms = objfile->static_psymbols.next - | |
1659 | (objfile->static_psymbols.list + pst->statics_offset); | |
1660 | sort_pst_symbols (pst); | |
1661 | ||
1662 | /* If there is already a psymtab or symtab for a file of this | |
1663 | name, remove it. (If there is a symtab, more drastic things | |
1664 | also happen.) This happens in VxWorks. */ | |
1665 | free_named_symtabs (pst->filename); | |
1666 | ||
dd373385 EZ |
1667 | info_ptr = beg_of_comp_unit + cu.header.length |
1668 | + cu.header.initial_length_size; | |
1669 | ||
aaa75496 JB |
1670 | if (comp_unit_die.has_stmt_list) |
1671 | { | |
1672 | /* Get the list of files included in the current compilation unit, | |
1673 | and build a psymtab for each of them. */ | |
1674 | dwarf2_build_include_psymtabs (&cu, &comp_unit_die, pst); | |
1675 | } | |
1676 | ||
f3dd6933 | 1677 | do_cleanups (back_to_inner); |
c906108c | 1678 | } |
ff013f42 JK |
1679 | |
1680 | objfile->psymtabs_addrmap = addrmap_create_fixed (objfile->psymtabs_addrmap, | |
1681 | &objfile->objfile_obstack); | |
1682 | ||
ae038cb0 DJ |
1683 | do_cleanups (back_to); |
1684 | } | |
1685 | ||
1686 | /* Load the DIEs for a secondary CU into memory. */ | |
1687 | ||
1688 | static void | |
1689 | load_comp_unit (struct dwarf2_per_cu_data *this_cu, struct objfile *objfile) | |
1690 | { | |
1691 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 1692 | gdb_byte *info_ptr, *beg_of_comp_unit; |
ae038cb0 DJ |
1693 | struct partial_die_info comp_unit_die; |
1694 | struct dwarf2_cu *cu; | |
1695 | struct abbrev_info *abbrev; | |
1696 | unsigned int bytes_read; | |
1697 | struct cleanup *back_to; | |
1698 | ||
1699 | info_ptr = dwarf2_per_objfile->info_buffer + this_cu->offset; | |
1700 | beg_of_comp_unit = info_ptr; | |
1701 | ||
1702 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
1703 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
1704 | ||
1705 | obstack_init (&cu->comp_unit_obstack); | |
1706 | ||
1707 | cu->objfile = objfile; | |
1708 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, abfd); | |
1709 | ||
1710 | /* Complete the cu_header. */ | |
1711 | cu->header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; | |
d00adf39 | 1712 | cu->header.first_die_offset = info_ptr - beg_of_comp_unit; |
ae038cb0 DJ |
1713 | |
1714 | /* Read the abbrevs for this compilation unit into a table. */ | |
1715 | dwarf2_read_abbrevs (abfd, cu); | |
1716 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
1717 | ||
1718 | /* Read the compilation unit die. */ | |
1719 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1720 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1721 | abfd, info_ptr, cu); | |
1722 | ||
1723 | /* Set the language we're debugging. */ | |
1724 | set_cu_language (comp_unit_die.language, cu); | |
1725 | ||
1726 | /* Link this compilation unit into the compilation unit tree. */ | |
1727 | this_cu->cu = cu; | |
1728 | cu->per_cu = this_cu; | |
f792889a | 1729 | cu->type_hash = cu->per_cu->type_hash; |
ae038cb0 DJ |
1730 | |
1731 | /* Check if comp unit has_children. | |
1732 | If so, read the rest of the partial symbols from this comp unit. | |
1733 | If not, there's no more debug_info for this comp unit. */ | |
1734 | if (comp_unit_die.has_children) | |
1735 | load_partial_dies (abfd, info_ptr, 0, cu); | |
1736 | ||
1737 | do_cleanups (back_to); | |
1738 | } | |
1739 | ||
1740 | /* Create a list of all compilation units in OBJFILE. We do this only | |
1741 | if an inter-comp-unit reference is found; presumably if there is one, | |
1742 | there will be many, and one will occur early in the .debug_info section. | |
1743 | So there's no point in building this list incrementally. */ | |
1744 | ||
1745 | static void | |
1746 | create_all_comp_units (struct objfile *objfile) | |
1747 | { | |
1748 | int n_allocated; | |
1749 | int n_comp_units; | |
1750 | struct dwarf2_per_cu_data **all_comp_units; | |
fe1b8b76 | 1751 | gdb_byte *info_ptr = dwarf2_per_objfile->info_buffer; |
ae038cb0 DJ |
1752 | |
1753 | n_comp_units = 0; | |
1754 | n_allocated = 10; | |
1755 | all_comp_units = xmalloc (n_allocated | |
1756 | * sizeof (struct dwarf2_per_cu_data *)); | |
1757 | ||
1758 | while (info_ptr < dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1759 | { | |
c764a876 | 1760 | unsigned int length, initial_length_size; |
fe1b8b76 | 1761 | gdb_byte *beg_of_comp_unit; |
ae038cb0 | 1762 | struct dwarf2_per_cu_data *this_cu; |
c764a876 | 1763 | unsigned int offset; |
ae038cb0 DJ |
1764 | |
1765 | offset = info_ptr - dwarf2_per_objfile->info_buffer; | |
1766 | ||
1767 | /* Read just enough information to find out where the next | |
1768 | compilation unit is. */ | |
c764a876 DE |
1769 | length = read_initial_length (objfile->obfd, info_ptr, |
1770 | &initial_length_size); | |
ae038cb0 DJ |
1771 | |
1772 | /* Save the compilation unit for later lookup. */ | |
1773 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
1774 | sizeof (struct dwarf2_per_cu_data)); | |
1775 | memset (this_cu, 0, sizeof (*this_cu)); | |
1776 | this_cu->offset = offset; | |
c764a876 | 1777 | this_cu->length = length + initial_length_size; |
ae038cb0 DJ |
1778 | |
1779 | if (n_comp_units == n_allocated) | |
1780 | { | |
1781 | n_allocated *= 2; | |
1782 | all_comp_units = xrealloc (all_comp_units, | |
1783 | n_allocated | |
1784 | * sizeof (struct dwarf2_per_cu_data *)); | |
1785 | } | |
1786 | all_comp_units[n_comp_units++] = this_cu; | |
1787 | ||
1788 | info_ptr = info_ptr + this_cu->length; | |
1789 | } | |
1790 | ||
1791 | dwarf2_per_objfile->all_comp_units | |
1792 | = obstack_alloc (&objfile->objfile_obstack, | |
1793 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1794 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
1795 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1796 | xfree (all_comp_units); | |
1797 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
1798 | } |
1799 | ||
5734ee8b DJ |
1800 | /* Process all loaded DIEs for compilation unit CU, starting at |
1801 | FIRST_DIE. The caller should pass NEED_PC == 1 if the compilation | |
1802 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or | |
1803 | DW_AT_ranges). If NEED_PC is set, then this function will set | |
1804 | *LOWPC and *HIGHPC to the lowest and highest PC values found in CU | |
1805 | and record the covered ranges in the addrmap. */ | |
c906108c | 1806 | |
72bf9492 DJ |
1807 | static void |
1808 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
5734ee8b | 1809 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) |
c906108c | 1810 | { |
e7c27a73 | 1811 | struct objfile *objfile = cu->objfile; |
c906108c | 1812 | bfd *abfd = objfile->obfd; |
72bf9492 | 1813 | struct partial_die_info *pdi; |
c906108c | 1814 | |
91c24f0a DC |
1815 | /* Now, march along the PDI's, descending into ones which have |
1816 | interesting children but skipping the children of the other ones, | |
1817 | until we reach the end of the compilation unit. */ | |
c906108c | 1818 | |
72bf9492 | 1819 | pdi = first_die; |
91c24f0a | 1820 | |
72bf9492 DJ |
1821 | while (pdi != NULL) |
1822 | { | |
1823 | fixup_partial_die (pdi, cu); | |
c906108c | 1824 | |
91c24f0a DC |
1825 | /* Anonymous namespaces have no name but have interesting |
1826 | children, so we need to look at them. Ditto for anonymous | |
1827 | enums. */ | |
933c6fe4 | 1828 | |
72bf9492 DJ |
1829 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
1830 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 1831 | { |
72bf9492 | 1832 | switch (pdi->tag) |
c906108c SS |
1833 | { |
1834 | case DW_TAG_subprogram: | |
5734ee8b | 1835 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
c906108c SS |
1836 | break; |
1837 | case DW_TAG_variable: | |
1838 | case DW_TAG_typedef: | |
91c24f0a | 1839 | case DW_TAG_union_type: |
72bf9492 | 1840 | if (!pdi->is_declaration) |
63d06c5c | 1841 | { |
72bf9492 | 1842 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
1843 | } |
1844 | break; | |
c906108c | 1845 | case DW_TAG_class_type: |
680b30c7 | 1846 | case DW_TAG_interface_type: |
c906108c | 1847 | case DW_TAG_structure_type: |
72bf9492 | 1848 | if (!pdi->is_declaration) |
c906108c | 1849 | { |
72bf9492 | 1850 | add_partial_symbol (pdi, cu); |
c906108c SS |
1851 | } |
1852 | break; | |
91c24f0a | 1853 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
1854 | if (!pdi->is_declaration) |
1855 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
1856 | break; |
1857 | case DW_TAG_base_type: | |
a02abb62 | 1858 | case DW_TAG_subrange_type: |
c906108c | 1859 | /* File scope base type definitions are added to the partial |
c5aa993b | 1860 | symbol table. */ |
72bf9492 | 1861 | add_partial_symbol (pdi, cu); |
c906108c | 1862 | break; |
d9fa45fe | 1863 | case DW_TAG_namespace: |
5734ee8b | 1864 | add_partial_namespace (pdi, lowpc, highpc, need_pc, cu); |
91c24f0a | 1865 | break; |
5d7cb8df JK |
1866 | case DW_TAG_module: |
1867 | add_partial_module (pdi, lowpc, highpc, need_pc, cu); | |
1868 | break; | |
c906108c SS |
1869 | default: |
1870 | break; | |
1871 | } | |
1872 | } | |
1873 | ||
72bf9492 DJ |
1874 | /* If the die has a sibling, skip to the sibling. */ |
1875 | ||
1876 | pdi = pdi->die_sibling; | |
1877 | } | |
1878 | } | |
1879 | ||
1880 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 1881 | |
72bf9492 | 1882 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
1883 | name is concatenated with "::" and the partial DIE's name. For |
1884 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
1885 | Enumerators are an exception; they use the scope of their parent |
1886 | enumeration type, i.e. the name of the enumeration type is not | |
1887 | prepended to the enumerator. | |
91c24f0a | 1888 | |
72bf9492 DJ |
1889 | There are two complexities. One is DW_AT_specification; in this |
1890 | case "parent" means the parent of the target of the specification, | |
1891 | instead of the direct parent of the DIE. The other is compilers | |
1892 | which do not emit DW_TAG_namespace; in this case we try to guess | |
1893 | the fully qualified name of structure types from their members' | |
1894 | linkage names. This must be done using the DIE's children rather | |
1895 | than the children of any DW_AT_specification target. We only need | |
1896 | to do this for structures at the top level, i.e. if the target of | |
1897 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
1898 | have a parent. */ | |
1899 | ||
1900 | /* Compute the scope prefix associated with PDI's parent, in | |
1901 | compilation unit CU. The result will be allocated on CU's | |
1902 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
1903 | field. NULL is returned if no prefix is necessary. */ | |
1904 | static char * | |
1905 | partial_die_parent_scope (struct partial_die_info *pdi, | |
1906 | struct dwarf2_cu *cu) | |
1907 | { | |
1908 | char *grandparent_scope; | |
1909 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 1910 | |
72bf9492 DJ |
1911 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
1912 | then this means the parent of the specification DIE. */ | |
1913 | ||
1914 | real_pdi = pdi; | |
72bf9492 | 1915 | while (real_pdi->has_specification) |
10b3939b | 1916 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
1917 | |
1918 | parent = real_pdi->die_parent; | |
1919 | if (parent == NULL) | |
1920 | return NULL; | |
1921 | ||
1922 | if (parent->scope_set) | |
1923 | return parent->scope; | |
1924 | ||
1925 | fixup_partial_die (parent, cu); | |
1926 | ||
10b3939b | 1927 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 DJ |
1928 | |
1929 | if (parent->tag == DW_TAG_namespace | |
1930 | || parent->tag == DW_TAG_structure_type | |
1931 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 1932 | || parent->tag == DW_TAG_interface_type |
72bf9492 DJ |
1933 | || parent->tag == DW_TAG_union_type) |
1934 | { | |
1935 | if (grandparent_scope == NULL) | |
1936 | parent->scope = parent->name; | |
1937 | else | |
987504bb JJ |
1938 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
1939 | parent->name, cu); | |
72bf9492 DJ |
1940 | } |
1941 | else if (parent->tag == DW_TAG_enumeration_type) | |
1942 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
1943 | parent->scope = grandparent_scope; | |
1944 | else | |
1945 | { | |
1946 | /* FIXME drow/2004-04-01: What should we be doing with | |
1947 | function-local names? For partial symbols, we should probably be | |
1948 | ignoring them. */ | |
1949 | complaint (&symfile_complaints, | |
e2e0b3e5 | 1950 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
1951 | parent->tag, pdi->offset); |
1952 | parent->scope = grandparent_scope; | |
c906108c SS |
1953 | } |
1954 | ||
72bf9492 DJ |
1955 | parent->scope_set = 1; |
1956 | return parent->scope; | |
1957 | } | |
1958 | ||
1959 | /* Return the fully scoped name associated with PDI, from compilation unit | |
1960 | CU. The result will be allocated with malloc. */ | |
1961 | static char * | |
1962 | partial_die_full_name (struct partial_die_info *pdi, | |
1963 | struct dwarf2_cu *cu) | |
1964 | { | |
1965 | char *parent_scope; | |
1966 | ||
1967 | parent_scope = partial_die_parent_scope (pdi, cu); | |
1968 | if (parent_scope == NULL) | |
1969 | return NULL; | |
1970 | else | |
987504bb | 1971 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
1972 | } |
1973 | ||
1974 | static void | |
72bf9492 | 1975 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 1976 | { |
e7c27a73 | 1977 | struct objfile *objfile = cu->objfile; |
c906108c | 1978 | CORE_ADDR addr = 0; |
decbce07 | 1979 | char *actual_name = NULL; |
72bf9492 | 1980 | const char *my_prefix; |
5c4e30ca | 1981 | const struct partial_symbol *psym = NULL; |
e142c38c | 1982 | CORE_ADDR baseaddr; |
72bf9492 | 1983 | int built_actual_name = 0; |
e142c38c DJ |
1984 | |
1985 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1986 | |
72bf9492 | 1987 | if (pdi_needs_namespace (pdi->tag)) |
63d06c5c | 1988 | { |
72bf9492 DJ |
1989 | actual_name = partial_die_full_name (pdi, cu); |
1990 | if (actual_name) | |
1991 | built_actual_name = 1; | |
63d06c5c DC |
1992 | } |
1993 | ||
72bf9492 DJ |
1994 | if (actual_name == NULL) |
1995 | actual_name = pdi->name; | |
1996 | ||
c906108c SS |
1997 | switch (pdi->tag) |
1998 | { | |
1999 | case DW_TAG_subprogram: | |
2cfa0c8d | 2000 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 2001 | { |
2cfa0c8d JB |
2002 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
2003 | of the global scope. But in Ada, we want to be able to access | |
2004 | nested procedures globally. So all Ada subprograms are stored | |
2005 | in the global scope. */ | |
38d518c9 | 2006 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 2007 | mst_text, objfile); */ |
38d518c9 | 2008 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
2009 | VAR_DOMAIN, LOC_BLOCK, |
2010 | &objfile->global_psymbols, | |
2011 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 2012 | cu->language, objfile); |
c906108c SS |
2013 | } |
2014 | else | |
2015 | { | |
38d518c9 | 2016 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 2017 | mst_file_text, objfile); */ |
38d518c9 | 2018 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
2019 | VAR_DOMAIN, LOC_BLOCK, |
2020 | &objfile->static_psymbols, | |
2021 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 2022 | cu->language, objfile); |
c906108c SS |
2023 | } |
2024 | break; | |
2025 | case DW_TAG_variable: | |
2026 | if (pdi->is_external) | |
2027 | { | |
2028 | /* Global Variable. | |
2029 | Don't enter into the minimal symbol tables as there is | |
2030 | a minimal symbol table entry from the ELF symbols already. | |
2031 | Enter into partial symbol table if it has a location | |
2032 | descriptor or a type. | |
2033 | If the location descriptor is missing, new_symbol will create | |
2034 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
2035 | be determined from the minimal symbol table whenever the variable | |
2036 | is referenced. | |
2037 | The address for the partial symbol table entry is not | |
2038 | used by GDB, but it comes in handy for debugging partial symbol | |
2039 | table building. */ | |
2040 | ||
2041 | if (pdi->locdesc) | |
e7c27a73 | 2042 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 2043 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 2044 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
2045 | VAR_DOMAIN, LOC_STATIC, |
2046 | &objfile->global_psymbols, | |
2047 | 0, addr + baseaddr, | |
e142c38c | 2048 | cu->language, objfile); |
c906108c SS |
2049 | } |
2050 | else | |
2051 | { | |
2052 | /* Static Variable. Skip symbols without location descriptors. */ | |
2053 | if (pdi->locdesc == NULL) | |
decbce07 MS |
2054 | { |
2055 | if (built_actual_name) | |
2056 | xfree (actual_name); | |
2057 | return; | |
2058 | } | |
e7c27a73 | 2059 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 2060 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 2061 | mst_file_data, objfile); */ |
38d518c9 | 2062 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
2063 | VAR_DOMAIN, LOC_STATIC, |
2064 | &objfile->static_psymbols, | |
2065 | 0, addr + baseaddr, | |
e142c38c | 2066 | cu->language, objfile); |
c906108c SS |
2067 | } |
2068 | break; | |
2069 | case DW_TAG_typedef: | |
2070 | case DW_TAG_base_type: | |
a02abb62 | 2071 | case DW_TAG_subrange_type: |
38d518c9 | 2072 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2073 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 2074 | &objfile->static_psymbols, |
e142c38c | 2075 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2076 | break; |
72bf9492 DJ |
2077 | case DW_TAG_namespace: |
2078 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
2079 | VAR_DOMAIN, LOC_TYPEDEF, | |
2080 | &objfile->global_psymbols, | |
2081 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
2082 | break; | |
c906108c | 2083 | case DW_TAG_class_type: |
680b30c7 | 2084 | case DW_TAG_interface_type: |
c906108c SS |
2085 | case DW_TAG_structure_type: |
2086 | case DW_TAG_union_type: | |
2087 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
2088 | /* Skip external references. The DWARF standard says in the section |
2089 | about "Structure, Union, and Class Type Entries": "An incomplete | |
2090 | structure, union or class type is represented by a structure, | |
2091 | union or class entry that does not have a byte size attribute | |
2092 | and that has a DW_AT_declaration attribute." */ | |
2093 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
2094 | { |
2095 | if (built_actual_name) | |
2096 | xfree (actual_name); | |
2097 | return; | |
2098 | } | |
fa4028e9 | 2099 | |
63d06c5c DC |
2100 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
2101 | static vs. global. */ | |
38d518c9 | 2102 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2103 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
2104 | (cu->language == language_cplus |
2105 | || cu->language == language_java) | |
63d06c5c DC |
2106 | ? &objfile->global_psymbols |
2107 | : &objfile->static_psymbols, | |
e142c38c | 2108 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2109 | |
c906108c SS |
2110 | break; |
2111 | case DW_TAG_enumerator: | |
38d518c9 | 2112 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2113 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
2114 | (cu->language == language_cplus |
2115 | || cu->language == language_java) | |
f6fe98ef DJ |
2116 | ? &objfile->global_psymbols |
2117 | : &objfile->static_psymbols, | |
e142c38c | 2118 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2119 | break; |
2120 | default: | |
2121 | break; | |
2122 | } | |
5c4e30ca DC |
2123 | |
2124 | /* Check to see if we should scan the name for possible namespace | |
2125 | info. Only do this if this is C++, if we don't have namespace | |
2126 | debugging info in the file, if the psym is of an appropriate type | |
2127 | (otherwise we'll have psym == NULL), and if we actually had a | |
2128 | mangled name to begin with. */ | |
2129 | ||
72bf9492 DJ |
2130 | /* FIXME drow/2004-02-22: Why don't we do this for classes, i.e. the |
2131 | cases which do not set PSYM above? */ | |
2132 | ||
e142c38c | 2133 | if (cu->language == language_cplus |
72bf9492 | 2134 | && cu->has_namespace_info == 0 |
5c4e30ca DC |
2135 | && psym != NULL |
2136 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
2137 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
2138 | objfile); | |
72bf9492 DJ |
2139 | |
2140 | if (built_actual_name) | |
2141 | xfree (actual_name); | |
c906108c SS |
2142 | } |
2143 | ||
72bf9492 DJ |
2144 | /* Determine whether a die of type TAG living in a C++ class or |
2145 | namespace needs to have the name of the scope prepended to the | |
63d06c5c DC |
2146 | name listed in the die. */ |
2147 | ||
2148 | static int | |
72bf9492 | 2149 | pdi_needs_namespace (enum dwarf_tag tag) |
63d06c5c | 2150 | { |
63d06c5c DC |
2151 | switch (tag) |
2152 | { | |
72bf9492 | 2153 | case DW_TAG_namespace: |
63d06c5c DC |
2154 | case DW_TAG_typedef: |
2155 | case DW_TAG_class_type: | |
680b30c7 | 2156 | case DW_TAG_interface_type: |
63d06c5c DC |
2157 | case DW_TAG_structure_type: |
2158 | case DW_TAG_union_type: | |
2159 | case DW_TAG_enumeration_type: | |
2160 | case DW_TAG_enumerator: | |
2161 | return 1; | |
2162 | default: | |
2163 | return 0; | |
2164 | } | |
2165 | } | |
2166 | ||
5c4e30ca DC |
2167 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2168 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2169 | the name of the enclosing namespace. */ | |
91c24f0a | 2170 | |
72bf9492 DJ |
2171 | static void |
2172 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2173 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
5734ee8b | 2174 | int need_pc, struct dwarf2_cu *cu) |
91c24f0a | 2175 | { |
e7c27a73 | 2176 | struct objfile *objfile = cu->objfile; |
5c4e30ca | 2177 | |
72bf9492 | 2178 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2179 | |
72bf9492 | 2180 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2181 | |
2182 | /* Now scan partial symbols in that namespace. */ | |
2183 | ||
91c24f0a | 2184 | if (pdi->has_children) |
5734ee8b | 2185 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); |
91c24f0a DC |
2186 | } |
2187 | ||
5d7cb8df JK |
2188 | /* Read a partial die corresponding to a Fortran module. */ |
2189 | ||
2190 | static void | |
2191 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
2192 | CORE_ADDR *highpc, int need_pc, struct dwarf2_cu *cu) | |
2193 | { | |
2194 | /* Now scan partial symbols in that module. | |
2195 | ||
2196 | FIXME: Support the separate Fortran module namespaces. */ | |
2197 | ||
2198 | if (pdi->has_children) | |
2199 | scan_partial_symbols (pdi->die_child, lowpc, highpc, need_pc, cu); | |
2200 | } | |
2201 | ||
bc30ff58 JB |
2202 | /* Read a partial die corresponding to a subprogram and create a partial |
2203 | symbol for that subprogram. When the CU language allows it, this | |
2204 | routine also defines a partial symbol for each nested subprogram | |
2205 | that this subprogram contains. | |
2206 | ||
2207 | DIE my also be a lexical block, in which case we simply search | |
2208 | recursively for suprograms defined inside that lexical block. | |
2209 | Again, this is only performed when the CU language allows this | |
2210 | type of definitions. */ | |
2211 | ||
2212 | static void | |
2213 | add_partial_subprogram (struct partial_die_info *pdi, | |
2214 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 2215 | int need_pc, struct dwarf2_cu *cu) |
bc30ff58 JB |
2216 | { |
2217 | if (pdi->tag == DW_TAG_subprogram) | |
2218 | { | |
2219 | if (pdi->has_pc_info) | |
2220 | { | |
2221 | if (pdi->lowpc < *lowpc) | |
2222 | *lowpc = pdi->lowpc; | |
2223 | if (pdi->highpc > *highpc) | |
2224 | *highpc = pdi->highpc; | |
5734ee8b DJ |
2225 | if (need_pc) |
2226 | { | |
2227 | CORE_ADDR baseaddr; | |
2228 | struct objfile *objfile = cu->objfile; | |
2229 | ||
2230 | baseaddr = ANOFFSET (objfile->section_offsets, | |
2231 | SECT_OFF_TEXT (objfile)); | |
2232 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
2233 | pdi->lowpc, pdi->highpc - 1, | |
2234 | cu->per_cu->psymtab); | |
2235 | } | |
bc30ff58 JB |
2236 | if (!pdi->is_declaration) |
2237 | add_partial_symbol (pdi, cu); | |
2238 | } | |
2239 | } | |
2240 | ||
2241 | if (! pdi->has_children) | |
2242 | return; | |
2243 | ||
2244 | if (cu->language == language_ada) | |
2245 | { | |
2246 | pdi = pdi->die_child; | |
2247 | while (pdi != NULL) | |
2248 | { | |
2249 | fixup_partial_die (pdi, cu); | |
2250 | if (pdi->tag == DW_TAG_subprogram | |
2251 | || pdi->tag == DW_TAG_lexical_block) | |
5734ee8b | 2252 | add_partial_subprogram (pdi, lowpc, highpc, need_pc, cu); |
bc30ff58 JB |
2253 | pdi = pdi->die_sibling; |
2254 | } | |
2255 | } | |
2256 | } | |
2257 | ||
72bf9492 DJ |
2258 | /* See if we can figure out if the class lives in a namespace. We do |
2259 | this by looking for a member function; its demangled name will | |
2260 | contain namespace info, if there is any. */ | |
63d06c5c | 2261 | |
72bf9492 DJ |
2262 | static void |
2263 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2264 | struct dwarf2_cu *cu) | |
63d06c5c | 2265 | { |
987504bb JJ |
2266 | if ((cu->language == language_cplus |
2267 | || cu->language == language_java) | |
72bf9492 | 2268 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2269 | && struct_pdi->has_children) |
2270 | { | |
63d06c5c DC |
2271 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2272 | what template types look like, because the demangler | |
2273 | frequently doesn't give the same name as the debug info. We | |
2274 | could fix this by only using the demangled name to get the | |
134d01f1 | 2275 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2276 | |
72bf9492 DJ |
2277 | struct partial_die_info *child_pdi = struct_pdi->die_child; |
2278 | struct partial_die_info *real_pdi; | |
5d51ca54 | 2279 | |
72bf9492 DJ |
2280 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2281 | we should not do this. We'll prepend the parent's fully qualified | |
2282 | name when we create the partial symbol. */ | |
5d51ca54 | 2283 | |
72bf9492 | 2284 | real_pdi = struct_pdi; |
72bf9492 | 2285 | while (real_pdi->has_specification) |
10b3939b | 2286 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2287 | |
72bf9492 DJ |
2288 | if (real_pdi->die_parent != NULL) |
2289 | return; | |
63d06c5c | 2290 | |
72bf9492 DJ |
2291 | while (child_pdi != NULL) |
2292 | { | |
2293 | if (child_pdi->tag == DW_TAG_subprogram) | |
63d06c5c | 2294 | { |
72bf9492 | 2295 | char *actual_class_name |
31c27f77 JJ |
2296 | = language_class_name_from_physname (cu->language_defn, |
2297 | child_pdi->name); | |
63d06c5c | 2298 | if (actual_class_name != NULL) |
72bf9492 DJ |
2299 | { |
2300 | struct_pdi->name | |
2301 | = obsavestring (actual_class_name, | |
2302 | strlen (actual_class_name), | |
2303 | &cu->comp_unit_obstack); | |
2304 | xfree (actual_class_name); | |
2305 | } | |
63d06c5c DC |
2306 | break; |
2307 | } | |
72bf9492 DJ |
2308 | |
2309 | child_pdi = child_pdi->die_sibling; | |
63d06c5c DC |
2310 | } |
2311 | } | |
63d06c5c DC |
2312 | } |
2313 | ||
91c24f0a DC |
2314 | /* Read a partial die corresponding to an enumeration type. */ |
2315 | ||
72bf9492 DJ |
2316 | static void |
2317 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2318 | struct dwarf2_cu *cu) | |
91c24f0a | 2319 | { |
e7c27a73 | 2320 | struct objfile *objfile = cu->objfile; |
91c24f0a | 2321 | bfd *abfd = objfile->obfd; |
72bf9492 | 2322 | struct partial_die_info *pdi; |
91c24f0a DC |
2323 | |
2324 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2325 | add_partial_symbol (enum_pdi, cu); |
2326 | ||
2327 | pdi = enum_pdi->die_child; | |
2328 | while (pdi) | |
91c24f0a | 2329 | { |
72bf9492 | 2330 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 2331 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 2332 | else |
72bf9492 DJ |
2333 | add_partial_symbol (pdi, cu); |
2334 | pdi = pdi->die_sibling; | |
91c24f0a | 2335 | } |
91c24f0a DC |
2336 | } |
2337 | ||
4bb7a0a7 DJ |
2338 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2339 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2340 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2341 | the initial number. */ | |
2342 | ||
2343 | static struct abbrev_info * | |
fe1b8b76 | 2344 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 2345 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2346 | { |
2347 | bfd *abfd = cu->objfile->obfd; | |
2348 | unsigned int abbrev_number; | |
2349 | struct abbrev_info *abbrev; | |
2350 | ||
2351 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2352 | ||
2353 | if (abbrev_number == 0) | |
2354 | return NULL; | |
2355 | ||
2356 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2357 | if (!abbrev) | |
2358 | { | |
8a3fe4f8 | 2359 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
2360 | bfd_get_filename (abfd)); |
2361 | } | |
2362 | ||
2363 | return abbrev; | |
2364 | } | |
2365 | ||
2366 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
2367 | pointer to the end of a series of DIEs, terminated by an empty | |
2368 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
2369 | ||
fe1b8b76 JB |
2370 | static gdb_byte * |
2371 | skip_children (gdb_byte *info_ptr, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
2372 | { |
2373 | struct abbrev_info *abbrev; | |
2374 | unsigned int bytes_read; | |
2375 | ||
2376 | while (1) | |
2377 | { | |
2378 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2379 | if (abbrev == NULL) | |
2380 | return info_ptr + bytes_read; | |
2381 | else | |
2382 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
2383 | } | |
2384 | } | |
2385 | ||
2386 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
2387 | should point just after the initial uleb128 of a DIE, and the | |
2388 | abbrev corresponding to that skipped uleb128 should be passed in | |
2389 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2390 | children. */ | |
2391 | ||
fe1b8b76 JB |
2392 | static gdb_byte * |
2393 | skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, | |
4bb7a0a7 DJ |
2394 | struct dwarf2_cu *cu) |
2395 | { | |
2396 | unsigned int bytes_read; | |
2397 | struct attribute attr; | |
2398 | bfd *abfd = cu->objfile->obfd; | |
2399 | unsigned int form, i; | |
2400 | ||
2401 | for (i = 0; i < abbrev->num_attrs; i++) | |
2402 | { | |
2403 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2404 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2405 | { | |
2406 | read_attribute (&attr, &abbrev->attrs[i], | |
2407 | abfd, info_ptr, cu); | |
2408 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 2409 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 2410 | else |
6502dd73 | 2411 | return dwarf2_per_objfile->info_buffer |
c764a876 | 2412 | + dwarf2_get_ref_die_offset (&attr); |
4bb7a0a7 DJ |
2413 | } |
2414 | ||
2415 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2416 | form = abbrev->attrs[i].form; | |
2417 | skip_attribute: | |
2418 | switch (form) | |
2419 | { | |
2420 | case DW_FORM_addr: | |
2421 | case DW_FORM_ref_addr: | |
2422 | info_ptr += cu->header.addr_size; | |
2423 | break; | |
2424 | case DW_FORM_data1: | |
2425 | case DW_FORM_ref1: | |
2426 | case DW_FORM_flag: | |
2427 | info_ptr += 1; | |
2428 | break; | |
2429 | case DW_FORM_data2: | |
2430 | case DW_FORM_ref2: | |
2431 | info_ptr += 2; | |
2432 | break; | |
2433 | case DW_FORM_data4: | |
2434 | case DW_FORM_ref4: | |
2435 | info_ptr += 4; | |
2436 | break; | |
2437 | case DW_FORM_data8: | |
2438 | case DW_FORM_ref8: | |
2439 | info_ptr += 8; | |
2440 | break; | |
2441 | case DW_FORM_string: | |
2442 | read_string (abfd, info_ptr, &bytes_read); | |
2443 | info_ptr += bytes_read; | |
2444 | break; | |
2445 | case DW_FORM_strp: | |
2446 | info_ptr += cu->header.offset_size; | |
2447 | break; | |
2448 | case DW_FORM_block: | |
2449 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2450 | info_ptr += bytes_read; | |
2451 | break; | |
2452 | case DW_FORM_block1: | |
2453 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2454 | break; | |
2455 | case DW_FORM_block2: | |
2456 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2457 | break; | |
2458 | case DW_FORM_block4: | |
2459 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2460 | break; | |
2461 | case DW_FORM_sdata: | |
2462 | case DW_FORM_udata: | |
2463 | case DW_FORM_ref_udata: | |
2464 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2465 | break; | |
2466 | case DW_FORM_indirect: | |
2467 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2468 | info_ptr += bytes_read; | |
2469 | /* We need to continue parsing from here, so just go back to | |
2470 | the top. */ | |
2471 | goto skip_attribute; | |
2472 | ||
2473 | default: | |
8a3fe4f8 | 2474 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
2475 | dwarf_form_name (form), |
2476 | bfd_get_filename (abfd)); | |
2477 | } | |
2478 | } | |
2479 | ||
2480 | if (abbrev->has_children) | |
2481 | return skip_children (info_ptr, cu); | |
2482 | else | |
2483 | return info_ptr; | |
2484 | } | |
2485 | ||
2486 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
2487 | the next DIE after ORIG_PDI. */ | |
91c24f0a | 2488 | |
fe1b8b76 JB |
2489 | static gdb_byte * |
2490 | locate_pdi_sibling (struct partial_die_info *orig_pdi, gdb_byte *info_ptr, | |
e7c27a73 | 2491 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2492 | { |
2493 | /* Do we know the sibling already? */ | |
72bf9492 | 2494 | |
91c24f0a DC |
2495 | if (orig_pdi->sibling) |
2496 | return orig_pdi->sibling; | |
2497 | ||
2498 | /* Are there any children to deal with? */ | |
2499 | ||
2500 | if (!orig_pdi->has_children) | |
2501 | return info_ptr; | |
2502 | ||
4bb7a0a7 | 2503 | /* Skip the children the long way. */ |
91c24f0a | 2504 | |
4bb7a0a7 | 2505 | return skip_children (info_ptr, cu); |
91c24f0a DC |
2506 | } |
2507 | ||
c906108c SS |
2508 | /* Expand this partial symbol table into a full symbol table. */ |
2509 | ||
2510 | static void | |
fba45db2 | 2511 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2512 | { |
2513 | /* FIXME: This is barely more than a stub. */ | |
2514 | if (pst != NULL) | |
2515 | { | |
2516 | if (pst->readin) | |
2517 | { | |
8a3fe4f8 | 2518 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
2519 | } |
2520 | else | |
2521 | { | |
2522 | if (info_verbose) | |
2523 | { | |
a3f17187 | 2524 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
2525 | gdb_flush (gdb_stdout); |
2526 | } | |
2527 | ||
10b3939b DJ |
2528 | /* Restore our global data. */ |
2529 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2530 | dwarf2_objfile_data_key); | |
2531 | ||
c906108c SS |
2532 | psymtab_to_symtab_1 (pst); |
2533 | ||
2534 | /* Finish up the debug error message. */ | |
2535 | if (info_verbose) | |
a3f17187 | 2536 | printf_filtered (_("done.\n")); |
c906108c SS |
2537 | } |
2538 | } | |
2539 | } | |
2540 | ||
10b3939b DJ |
2541 | /* Add PER_CU to the queue. */ |
2542 | ||
2543 | static void | |
03dd20cc | 2544 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b DJ |
2545 | { |
2546 | struct dwarf2_queue_item *item; | |
2547 | ||
2548 | per_cu->queued = 1; | |
2549 | item = xmalloc (sizeof (*item)); | |
2550 | item->per_cu = per_cu; | |
2551 | item->next = NULL; | |
2552 | ||
2553 | if (dwarf2_queue == NULL) | |
2554 | dwarf2_queue = item; | |
2555 | else | |
2556 | dwarf2_queue_tail->next = item; | |
2557 | ||
2558 | dwarf2_queue_tail = item; | |
03dd20cc DJ |
2559 | |
2560 | /* Either PER_CU is the CU we want to process, or we're following a reference | |
2561 | pointing into PER_CU. Either way, we need its DIEs now. */ | |
2562 | load_full_comp_unit (item->per_cu, objfile); | |
2563 | item->per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
2564 | dwarf2_per_objfile->read_in_chain = item->per_cu; | |
10b3939b DJ |
2565 | } |
2566 | ||
2567 | /* Process the queue. */ | |
2568 | ||
2569 | static void | |
2570 | process_queue (struct objfile *objfile) | |
2571 | { | |
2572 | struct dwarf2_queue_item *item, *next_item; | |
2573 | ||
03dd20cc DJ |
2574 | /* The queue starts out with one item, but following a DIE reference |
2575 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
2576 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
2577 | { | |
31ffec48 | 2578 | if (item->per_cu->psymtab && !item->per_cu->psymtab->readin) |
10b3939b DJ |
2579 | process_full_comp_unit (item->per_cu); |
2580 | ||
2581 | item->per_cu->queued = 0; | |
2582 | next_item = item->next; | |
2583 | xfree (item); | |
2584 | } | |
2585 | ||
2586 | dwarf2_queue_tail = NULL; | |
2587 | } | |
2588 | ||
2589 | /* Free all allocated queue entries. This function only releases anything if | |
2590 | an error was thrown; if the queue was processed then it would have been | |
2591 | freed as we went along. */ | |
2592 | ||
2593 | static void | |
2594 | dwarf2_release_queue (void *dummy) | |
2595 | { | |
2596 | struct dwarf2_queue_item *item, *last; | |
2597 | ||
2598 | item = dwarf2_queue; | |
2599 | while (item) | |
2600 | { | |
2601 | /* Anything still marked queued is likely to be in an | |
2602 | inconsistent state, so discard it. */ | |
2603 | if (item->per_cu->queued) | |
2604 | { | |
2605 | if (item->per_cu->cu != NULL) | |
2606 | free_one_cached_comp_unit (item->per_cu->cu); | |
2607 | item->per_cu->queued = 0; | |
2608 | } | |
2609 | ||
2610 | last = item; | |
2611 | item = item->next; | |
2612 | xfree (last); | |
2613 | } | |
2614 | ||
2615 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2616 | } | |
2617 | ||
2618 | /* Read in full symbols for PST, and anything it depends on. */ | |
2619 | ||
c906108c | 2620 | static void |
fba45db2 | 2621 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 2622 | { |
10b3939b | 2623 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 2624 | struct cleanup *back_to; |
aaa75496 JB |
2625 | int i; |
2626 | ||
2627 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2628 | if (!pst->dependencies[i]->readin) | |
2629 | { | |
2630 | /* Inform about additional files that need to be read in. */ | |
2631 | if (info_verbose) | |
2632 | { | |
a3f17187 | 2633 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
2634 | fputs_filtered (" ", gdb_stdout); |
2635 | wrap_here (""); | |
2636 | fputs_filtered ("and ", gdb_stdout); | |
2637 | wrap_here (""); | |
2638 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
2639 | wrap_here (""); /* Flush output */ | |
2640 | gdb_flush (gdb_stdout); | |
2641 | } | |
2642 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
2643 | } | |
2644 | ||
10b3939b DJ |
2645 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
2646 | ||
2647 | if (per_cu == NULL) | |
aaa75496 JB |
2648 | { |
2649 | /* It's an include file, no symbols to read for it. | |
2650 | Everything is in the parent symtab. */ | |
2651 | pst->readin = 1; | |
2652 | return; | |
2653 | } | |
c906108c | 2654 | |
10b3939b DJ |
2655 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2656 | ||
03dd20cc | 2657 | queue_comp_unit (per_cu, pst->objfile); |
10b3939b DJ |
2658 | |
2659 | process_queue (pst->objfile); | |
2660 | ||
2661 | /* Age the cache, releasing compilation units that have not | |
2662 | been used recently. */ | |
2663 | age_cached_comp_units (); | |
2664 | ||
2665 | do_cleanups (back_to); | |
2666 | } | |
2667 | ||
2668 | /* Load the DIEs associated with PST and PER_CU into memory. */ | |
2669 | ||
2670 | static struct dwarf2_cu * | |
31ffec48 | 2671 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 2672 | { |
31ffec48 | 2673 | bfd *abfd = objfile->obfd; |
10b3939b | 2674 | struct dwarf2_cu *cu; |
c764a876 | 2675 | unsigned int offset; |
fe1b8b76 | 2676 | gdb_byte *info_ptr; |
10b3939b DJ |
2677 | struct cleanup *back_to, *free_cu_cleanup; |
2678 | struct attribute *attr; | |
2679 | CORE_ADDR baseaddr; | |
6502dd73 | 2680 | |
c906108c | 2681 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 2682 | offset = per_cu->offset; |
6502dd73 DJ |
2683 | |
2684 | info_ptr = dwarf2_per_objfile->info_buffer + offset; | |
63d06c5c | 2685 | |
10b3939b DJ |
2686 | cu = xmalloc (sizeof (struct dwarf2_cu)); |
2687 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
c906108c | 2688 | |
10b3939b DJ |
2689 | /* If an error occurs while loading, release our storage. */ |
2690 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 2691 | |
31ffec48 | 2692 | cu->objfile = objfile; |
e7c27a73 | 2693 | |
c906108c | 2694 | /* read in the comp_unit header */ |
10b3939b | 2695 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c SS |
2696 | |
2697 | /* Read the abbrevs for this compilation unit */ | |
10b3939b DJ |
2698 | dwarf2_read_abbrevs (abfd, cu); |
2699 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2700 | ||
2701 | cu->header.offset = offset; | |
c906108c | 2702 | |
10b3939b DJ |
2703 | cu->per_cu = per_cu; |
2704 | per_cu->cu = cu; | |
f792889a | 2705 | cu->type_hash = per_cu->type_hash; |
e142c38c | 2706 | |
10b3939b DJ |
2707 | /* We use this obstack for block values in dwarf_alloc_block. */ |
2708 | obstack_init (&cu->comp_unit_obstack); | |
2709 | ||
2710 | cu->dies = read_comp_unit (info_ptr, abfd, cu); | |
2711 | ||
2712 | /* We try not to read any attributes in this function, because not | |
2713 | all objfiles needed for references have been loaded yet, and symbol | |
2714 | table processing isn't initialized. But we have to set the CU language, | |
2715 | or we won't be able to build types correctly. */ | |
2716 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
2717 | if (attr) | |
2718 | set_cu_language (DW_UNSND (attr), cu); | |
2719 | else | |
2720 | set_cu_language (language_minimal, cu); | |
2721 | ||
2722 | do_cleanups (back_to); | |
e142c38c | 2723 | |
10b3939b DJ |
2724 | /* We've successfully allocated this compilation unit. Let our caller |
2725 | clean it up when finished with it. */ | |
2726 | discard_cleanups (free_cu_cleanup); | |
c906108c | 2727 | |
10b3939b DJ |
2728 | return cu; |
2729 | } | |
2730 | ||
2731 | /* Generate full symbol information for PST and CU, whose DIEs have | |
2732 | already been loaded into memory. */ | |
2733 | ||
2734 | static void | |
2735 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2736 | { | |
2737 | struct partial_symtab *pst = per_cu->psymtab; | |
2738 | struct dwarf2_cu *cu = per_cu->cu; | |
2739 | struct objfile *objfile = pst->objfile; | |
2740 | bfd *abfd = objfile->obfd; | |
2741 | CORE_ADDR lowpc, highpc; | |
2742 | struct symtab *symtab; | |
2743 | struct cleanup *back_to; | |
2744 | struct attribute *attr; | |
2745 | CORE_ADDR baseaddr; | |
2746 | ||
2747 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2748 | ||
10b3939b DJ |
2749 | buildsym_init (); |
2750 | back_to = make_cleanup (really_free_pendings, NULL); | |
2751 | ||
2752 | cu->list_in_scope = &file_symbols; | |
c906108c | 2753 | |
0d53c4c4 DJ |
2754 | /* Find the base address of the compilation unit for range lists and |
2755 | location lists. It will normally be specified by DW_AT_low_pc. | |
2756 | In DWARF-3 draft 4, the base address could be overridden by | |
2757 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2758 | compilation units with discontinuous ranges. */ | |
2759 | ||
d00adf39 DE |
2760 | cu->base_known = 0; |
2761 | cu->base_address = 0; | |
0d53c4c4 | 2762 | |
10b3939b | 2763 | attr = dwarf2_attr (cu->dies, DW_AT_entry_pc, cu); |
0d53c4c4 DJ |
2764 | if (attr) |
2765 | { | |
d00adf39 DE |
2766 | cu->base_address = DW_ADDR (attr); |
2767 | cu->base_known = 1; | |
0d53c4c4 DJ |
2768 | } |
2769 | else | |
2770 | { | |
10b3939b | 2771 | attr = dwarf2_attr (cu->dies, DW_AT_low_pc, cu); |
0d53c4c4 DJ |
2772 | if (attr) |
2773 | { | |
d00adf39 DE |
2774 | cu->base_address = DW_ADDR (attr); |
2775 | cu->base_known = 1; | |
0d53c4c4 DJ |
2776 | } |
2777 | } | |
2778 | ||
c906108c | 2779 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 2780 | process_die (cu->dies, cu); |
c906108c | 2781 | |
fae299cd DC |
2782 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
2783 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
2784 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 2785 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 2786 | |
613e1657 | 2787 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2788 | |
2789 | /* Set symtab language to language from DW_AT_language. | |
2790 | If the compilation is from a C file generated by language preprocessors, | |
2791 | do not set the language if it was already deduced by start_subfile. */ | |
2792 | if (symtab != NULL | |
10b3939b | 2793 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 2794 | { |
10b3939b | 2795 | symtab->language = cu->language; |
c906108c SS |
2796 | } |
2797 | pst->symtab = symtab; | |
2798 | pst->readin = 1; | |
c906108c SS |
2799 | |
2800 | do_cleanups (back_to); | |
2801 | } | |
2802 | ||
2803 | /* Process a die and its children. */ | |
2804 | ||
2805 | static void | |
e7c27a73 | 2806 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2807 | { |
2808 | switch (die->tag) | |
2809 | { | |
2810 | case DW_TAG_padding: | |
2811 | break; | |
2812 | case DW_TAG_compile_unit: | |
e7c27a73 | 2813 | read_file_scope (die, cu); |
c906108c SS |
2814 | break; |
2815 | case DW_TAG_subprogram: | |
e7c27a73 | 2816 | read_func_scope (die, cu); |
c906108c SS |
2817 | break; |
2818 | case DW_TAG_inlined_subroutine: | |
2819 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2820 | They could be used to set breakpoints on all inlined instances |
2821 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2822 | break; |
2823 | case DW_TAG_lexical_block: | |
14898363 L |
2824 | case DW_TAG_try_block: |
2825 | case DW_TAG_catch_block: | |
e7c27a73 | 2826 | read_lexical_block_scope (die, cu); |
c906108c SS |
2827 | break; |
2828 | case DW_TAG_class_type: | |
680b30c7 | 2829 | case DW_TAG_interface_type: |
c906108c SS |
2830 | case DW_TAG_structure_type: |
2831 | case DW_TAG_union_type: | |
134d01f1 | 2832 | process_structure_scope (die, cu); |
c906108c SS |
2833 | break; |
2834 | case DW_TAG_enumeration_type: | |
134d01f1 | 2835 | process_enumeration_scope (die, cu); |
c906108c | 2836 | break; |
134d01f1 | 2837 | |
f792889a DJ |
2838 | /* These dies have a type, but processing them does not create |
2839 | a symbol or recurse to process the children. Therefore we can | |
2840 | read them on-demand through read_type_die. */ | |
c906108c | 2841 | case DW_TAG_subroutine_type: |
72019c9c | 2842 | case DW_TAG_set_type: |
c906108c | 2843 | case DW_TAG_array_type: |
c906108c | 2844 | case DW_TAG_pointer_type: |
c906108c | 2845 | case DW_TAG_ptr_to_member_type: |
c906108c | 2846 | case DW_TAG_reference_type: |
c906108c | 2847 | case DW_TAG_string_type: |
c906108c | 2848 | break; |
134d01f1 | 2849 | |
c906108c | 2850 | case DW_TAG_base_type: |
a02abb62 | 2851 | case DW_TAG_subrange_type: |
134d01f1 DJ |
2852 | /* Add a typedef symbol for the type definition, if it has a |
2853 | DW_AT_name. */ | |
f792889a | 2854 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 2855 | break; |
c906108c | 2856 | case DW_TAG_common_block: |
e7c27a73 | 2857 | read_common_block (die, cu); |
c906108c SS |
2858 | break; |
2859 | case DW_TAG_common_inclusion: | |
2860 | break; | |
d9fa45fe | 2861 | case DW_TAG_namespace: |
63d06c5c | 2862 | processing_has_namespace_info = 1; |
e7c27a73 | 2863 | read_namespace (die, cu); |
d9fa45fe | 2864 | break; |
5d7cb8df JK |
2865 | case DW_TAG_module: |
2866 | read_module (die, cu); | |
2867 | break; | |
d9fa45fe DC |
2868 | case DW_TAG_imported_declaration: |
2869 | case DW_TAG_imported_module: | |
2870 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2871 | information contained in these. DW_TAG_imported_declaration | |
2872 | dies shouldn't have children; DW_TAG_imported_module dies | |
2873 | shouldn't in the C++ case, but conceivably could in the | |
d68209e4 | 2874 | Fortran case. */ |
63d06c5c | 2875 | processing_has_namespace_info = 1; |
d68209e4 JK |
2876 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
2877 | dwarf_tag_name (die->tag)); | |
d9fa45fe | 2878 | break; |
c906108c | 2879 | default: |
e7c27a73 | 2880 | new_symbol (die, NULL, cu); |
c906108c SS |
2881 | break; |
2882 | } | |
2883 | } | |
2884 | ||
0114d602 DJ |
2885 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
2886 | If scope qualifiers are appropriate they will be added. The result | |
2887 | will be allocated on the objfile_obstack, or NULL if the DIE does | |
2888 | not have a name. */ | |
2889 | ||
2890 | static const char * | |
2891 | dwarf2_full_name (struct die_info *die, struct dwarf2_cu *cu) | |
2892 | { | |
2893 | struct attribute *attr; | |
2894 | char *prefix, *name; | |
2895 | struct ui_file *buf = NULL; | |
2896 | ||
2897 | name = dwarf2_name (die, cu); | |
2898 | if (!name) | |
2899 | return NULL; | |
2900 | ||
2901 | /* These are the only languages we know how to qualify names in. */ | |
2902 | if (cu->language != language_cplus | |
2903 | && cu->language != language_java) | |
2904 | return name; | |
2905 | ||
2906 | /* If no prefix is necessary for this type of DIE, return the | |
2907 | unqualified name. The other three tags listed could be handled | |
2908 | in pdi_needs_namespace, but that requires broader changes. */ | |
2909 | if (!pdi_needs_namespace (die->tag) | |
2910 | && die->tag != DW_TAG_subprogram | |
2911 | && die->tag != DW_TAG_variable | |
2912 | && die->tag != DW_TAG_member) | |
2913 | return name; | |
2914 | ||
2915 | prefix = determine_prefix (die, cu); | |
2916 | if (*prefix != '\0') | |
2917 | name = typename_concat (&cu->objfile->objfile_obstack, prefix, | |
2918 | name, cu); | |
2919 | ||
2920 | return name; | |
2921 | } | |
2922 | ||
5fb290d7 | 2923 | static void |
e142c38c | 2924 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2925 | { |
e142c38c | 2926 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2927 | } |
2928 | ||
cb1df416 DJ |
2929 | static void |
2930 | free_cu_line_header (void *arg) | |
2931 | { | |
2932 | struct dwarf2_cu *cu = arg; | |
2933 | ||
2934 | free_line_header (cu->line_header); | |
2935 | cu->line_header = NULL; | |
2936 | } | |
2937 | ||
c906108c | 2938 | static void |
e7c27a73 | 2939 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2940 | { |
e7c27a73 DJ |
2941 | struct objfile *objfile = cu->objfile; |
2942 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2943 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2944 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2945 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2946 | struct attribute *attr; | |
e1024ff1 | 2947 | char *name = NULL; |
c906108c SS |
2948 | char *comp_dir = NULL; |
2949 | struct die_info *child_die; | |
2950 | bfd *abfd = objfile->obfd; | |
debd256d | 2951 | struct line_header *line_header = 0; |
e142c38c DJ |
2952 | CORE_ADDR baseaddr; |
2953 | ||
2954 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2955 | |
fae299cd | 2956 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2957 | |
2958 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2959 | from finish_block. */ | |
2acceee2 | 2960 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2961 | lowpc = highpc; |
2962 | lowpc += baseaddr; | |
2963 | highpc += baseaddr; | |
2964 | ||
39cbfefa DJ |
2965 | /* Find the filename. Do not use dwarf2_name here, since the filename |
2966 | is not a source language identifier. */ | |
e142c38c | 2967 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2968 | if (attr) |
2969 | { | |
2970 | name = DW_STRING (attr); | |
2971 | } | |
e1024ff1 | 2972 | |
e142c38c | 2973 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c | 2974 | if (attr) |
e1024ff1 DJ |
2975 | comp_dir = DW_STRING (attr); |
2976 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
c906108c | 2977 | { |
e1024ff1 DJ |
2978 | comp_dir = ldirname (name); |
2979 | if (comp_dir != NULL) | |
2980 | make_cleanup (xfree, comp_dir); | |
2981 | } | |
2982 | if (comp_dir != NULL) | |
2983 | { | |
2984 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2985 | directory, get rid of it. */ | |
2986 | char *cp = strchr (comp_dir, ':'); | |
c906108c | 2987 | |
e1024ff1 DJ |
2988 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') |
2989 | comp_dir = cp + 1; | |
c906108c SS |
2990 | } |
2991 | ||
e1024ff1 DJ |
2992 | if (name == NULL) |
2993 | name = "<unknown>"; | |
2994 | ||
e142c38c | 2995 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2996 | if (attr) |
2997 | { | |
e142c38c | 2998 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2999 | } |
3000 | ||
b0f35d58 DL |
3001 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
3002 | if (attr) | |
3003 | cu->producer = DW_STRING (attr); | |
303b6f5d | 3004 | |
c906108c SS |
3005 | /* We assume that we're processing GCC output. */ |
3006 | processing_gcc_compilation = 2; | |
c906108c | 3007 | |
df8a16a1 DJ |
3008 | processing_has_namespace_info = 0; |
3009 | ||
c906108c SS |
3010 | start_symtab (name, comp_dir, lowpc); |
3011 | record_debugformat ("DWARF 2"); | |
303b6f5d | 3012 | record_producer (cu->producer); |
c906108c | 3013 | |
e142c38c | 3014 | initialize_cu_func_list (cu); |
c906108c | 3015 | |
cb1df416 DJ |
3016 | /* Decode line number information if present. We do this before |
3017 | processing child DIEs, so that the line header table is available | |
3018 | for DW_AT_decl_file. */ | |
e142c38c | 3019 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
3020 | if (attr) |
3021 | { | |
debd256d | 3022 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 3023 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
3024 | if (line_header) |
3025 | { | |
cb1df416 DJ |
3026 | cu->line_header = line_header; |
3027 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 3028 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 3029 | } |
5fb290d7 | 3030 | } |
debd256d | 3031 | |
cb1df416 DJ |
3032 | /* Process all dies in compilation unit. */ |
3033 | if (die->child != NULL) | |
3034 | { | |
3035 | child_die = die->child; | |
3036 | while (child_die && child_die->tag) | |
3037 | { | |
3038 | process_die (child_die, cu); | |
3039 | child_die = sibling_die (child_die); | |
3040 | } | |
3041 | } | |
3042 | ||
2e276125 JB |
3043 | /* Decode macro information, if present. Dwarf 2 macro information |
3044 | refers to information in the line number info statement program | |
3045 | header, so we can only read it if we've read the header | |
3046 | successfully. */ | |
e142c38c | 3047 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 3048 | if (attr && line_header) |
2e276125 JB |
3049 | { |
3050 | unsigned int macro_offset = DW_UNSND (attr); | |
3051 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 3052 | comp_dir, abfd, cu); |
2e276125 | 3053 | } |
debd256d | 3054 | do_cleanups (back_to); |
5fb290d7 DJ |
3055 | } |
3056 | ||
3057 | static void | |
e142c38c DJ |
3058 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
3059 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
3060 | { |
3061 | struct function_range *thisfn; | |
3062 | ||
3063 | thisfn = (struct function_range *) | |
7b5a2f43 | 3064 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
3065 | thisfn->name = name; |
3066 | thisfn->lowpc = lowpc; | |
3067 | thisfn->highpc = highpc; | |
3068 | thisfn->seen_line = 0; | |
3069 | thisfn->next = NULL; | |
3070 | ||
e142c38c DJ |
3071 | if (cu->last_fn == NULL) |
3072 | cu->first_fn = thisfn; | |
5fb290d7 | 3073 | else |
e142c38c | 3074 | cu->last_fn->next = thisfn; |
5fb290d7 | 3075 | |
e142c38c | 3076 | cu->last_fn = thisfn; |
c906108c SS |
3077 | } |
3078 | ||
3079 | static void | |
e7c27a73 | 3080 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3081 | { |
e7c27a73 | 3082 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 3083 | struct context_stack *new; |
c906108c SS |
3084 | CORE_ADDR lowpc; |
3085 | CORE_ADDR highpc; | |
3086 | struct die_info *child_die; | |
3087 | struct attribute *attr; | |
3088 | char *name; | |
e142c38c | 3089 | CORE_ADDR baseaddr; |
801e3a5b | 3090 | struct block *block; |
c906108c | 3091 | |
e142c38c DJ |
3092 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
3093 | ||
3094 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
3095 | |
3096 | /* Ignore functions with missing or empty names and functions with | |
3097 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 3098 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
3099 | return; |
3100 | ||
3101 | lowpc += baseaddr; | |
3102 | highpc += baseaddr; | |
3103 | ||
5fb290d7 | 3104 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 3105 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 3106 | |
c906108c | 3107 | new = push_context (0, lowpc); |
f792889a | 3108 | new->name = new_symbol (die, read_type_die (die, cu), cu); |
4c2df51b | 3109 | |
4cecd739 DJ |
3110 | /* If there is a location expression for DW_AT_frame_base, record |
3111 | it. */ | |
e142c38c | 3112 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 3113 | if (attr) |
c034e007 AC |
3114 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
3115 | expression is being recorded directly in the function's symbol | |
3116 | and not in a separate frame-base object. I guess this hack is | |
3117 | to avoid adding some sort of frame-base adjunct/annex to the | |
3118 | function's symbol :-(. The problem with doing this is that it | |
3119 | results in a function symbol with a location expression that | |
3120 | has nothing to do with the location of the function, ouch! The | |
3121 | relationship should be: a function's symbol has-a frame base; a | |
3122 | frame-base has-a location expression. */ | |
e7c27a73 | 3123 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 3124 | |
e142c38c | 3125 | cu->list_in_scope = &local_symbols; |
c906108c | 3126 | |
639d11d3 | 3127 | if (die->child != NULL) |
c906108c | 3128 | { |
639d11d3 | 3129 | child_die = die->child; |
c906108c SS |
3130 | while (child_die && child_die->tag) |
3131 | { | |
e7c27a73 | 3132 | process_die (child_die, cu); |
c906108c SS |
3133 | child_die = sibling_die (child_die); |
3134 | } | |
3135 | } | |
3136 | ||
3137 | new = pop_context (); | |
3138 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
3139 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
3140 | lowpc, highpc, objfile); | |
3141 | ||
df8a16a1 DJ |
3142 | /* For C++, set the block's scope. */ |
3143 | if (cu->language == language_cplus) | |
3144 | cp_set_block_scope (new->name, block, &objfile->objfile_obstack, | |
0114d602 | 3145 | determine_prefix (die, cu), |
df8a16a1 DJ |
3146 | processing_has_namespace_info); |
3147 | ||
801e3a5b JB |
3148 | /* If we have address ranges, record them. */ |
3149 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
208d8187 JB |
3150 | |
3151 | /* In C++, we can have functions nested inside functions (e.g., when | |
3152 | a function declares a class that has methods). This means that | |
3153 | when we finish processing a function scope, we may need to go | |
3154 | back to building a containing block's symbol lists. */ | |
3155 | local_symbols = new->locals; | |
3156 | param_symbols = new->params; | |
3157 | ||
921e78cf JB |
3158 | /* If we've finished processing a top-level function, subsequent |
3159 | symbols go in the file symbol list. */ | |
3160 | if (outermost_context_p ()) | |
e142c38c | 3161 | cu->list_in_scope = &file_symbols; |
c906108c SS |
3162 | } |
3163 | ||
3164 | /* Process all the DIES contained within a lexical block scope. Start | |
3165 | a new scope, process the dies, and then close the scope. */ | |
3166 | ||
3167 | static void | |
e7c27a73 | 3168 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3169 | { |
e7c27a73 | 3170 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 3171 | struct context_stack *new; |
c906108c SS |
3172 | CORE_ADDR lowpc, highpc; |
3173 | struct die_info *child_die; | |
e142c38c DJ |
3174 | CORE_ADDR baseaddr; |
3175 | ||
3176 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3177 | |
3178 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
3179 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
3180 | as multiple lexical blocks? Handling children in a sane way would | |
3181 | be nasty. Might be easier to properly extend generic blocks to | |
3182 | describe ranges. */ | |
e7c27a73 | 3183 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
3184 | return; |
3185 | lowpc += baseaddr; | |
3186 | highpc += baseaddr; | |
3187 | ||
3188 | push_context (0, lowpc); | |
639d11d3 | 3189 | if (die->child != NULL) |
c906108c | 3190 | { |
639d11d3 | 3191 | child_die = die->child; |
c906108c SS |
3192 | while (child_die && child_die->tag) |
3193 | { | |
e7c27a73 | 3194 | process_die (child_die, cu); |
c906108c SS |
3195 | child_die = sibling_die (child_die); |
3196 | } | |
3197 | } | |
3198 | new = pop_context (); | |
3199 | ||
3200 | if (local_symbols != NULL) | |
3201 | { | |
801e3a5b JB |
3202 | struct block *block |
3203 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
3204 | highpc, objfile); | |
3205 | ||
3206 | /* Note that recording ranges after traversing children, as we | |
3207 | do here, means that recording a parent's ranges entails | |
3208 | walking across all its children's ranges as they appear in | |
3209 | the address map, which is quadratic behavior. | |
3210 | ||
3211 | It would be nicer to record the parent's ranges before | |
3212 | traversing its children, simply overriding whatever you find | |
3213 | there. But since we don't even decide whether to create a | |
3214 | block until after we've traversed its children, that's hard | |
3215 | to do. */ | |
3216 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
3217 | } |
3218 | local_symbols = new->locals; | |
3219 | } | |
3220 | ||
43039443 | 3221 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
ff013f42 JK |
3222 | Return 1 if the attributes are present and valid, otherwise, return 0. |
3223 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
43039443 JK |
3224 | |
3225 | static int | |
3226 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
ff013f42 JK |
3227 | CORE_ADDR *high_return, struct dwarf2_cu *cu, |
3228 | struct partial_symtab *ranges_pst) | |
43039443 JK |
3229 | { |
3230 | struct objfile *objfile = cu->objfile; | |
3231 | struct comp_unit_head *cu_header = &cu->header; | |
3232 | bfd *obfd = objfile->obfd; | |
3233 | unsigned int addr_size = cu_header->addr_size; | |
3234 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3235 | /* Base address selection entry. */ | |
3236 | CORE_ADDR base; | |
3237 | int found_base; | |
3238 | unsigned int dummy; | |
3239 | gdb_byte *buffer; | |
3240 | CORE_ADDR marker; | |
3241 | int low_set; | |
3242 | CORE_ADDR low = 0; | |
3243 | CORE_ADDR high = 0; | |
ff013f42 | 3244 | CORE_ADDR baseaddr; |
43039443 | 3245 | |
d00adf39 DE |
3246 | found_base = cu->base_known; |
3247 | base = cu->base_address; | |
43039443 JK |
3248 | |
3249 | if (offset >= dwarf2_per_objfile->ranges_size) | |
3250 | { | |
3251 | complaint (&symfile_complaints, | |
3252 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
3253 | offset); | |
3254 | return 0; | |
3255 | } | |
3256 | buffer = dwarf2_per_objfile->ranges_buffer + offset; | |
3257 | ||
3258 | /* Read in the largest possible address. */ | |
3259 | marker = read_address (obfd, buffer, cu, &dummy); | |
3260 | if ((marker & mask) == mask) | |
3261 | { | |
3262 | /* If we found the largest possible address, then | |
3263 | read the base address. */ | |
3264 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
3265 | buffer += 2 * addr_size; | |
3266 | offset += 2 * addr_size; | |
3267 | found_base = 1; | |
3268 | } | |
3269 | ||
3270 | low_set = 0; | |
3271 | ||
e7030f15 | 3272 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 3273 | |
43039443 JK |
3274 | while (1) |
3275 | { | |
3276 | CORE_ADDR range_beginning, range_end; | |
3277 | ||
3278 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
3279 | buffer += addr_size; | |
3280 | range_end = read_address (obfd, buffer, cu, &dummy); | |
3281 | buffer += addr_size; | |
3282 | offset += 2 * addr_size; | |
3283 | ||
3284 | /* An end of list marker is a pair of zero addresses. */ | |
3285 | if (range_beginning == 0 && range_end == 0) | |
3286 | /* Found the end of list entry. */ | |
3287 | break; | |
3288 | ||
3289 | /* Each base address selection entry is a pair of 2 values. | |
3290 | The first is the largest possible address, the second is | |
3291 | the base address. Check for a base address here. */ | |
3292 | if ((range_beginning & mask) == mask) | |
3293 | { | |
3294 | /* If we found the largest possible address, then | |
3295 | read the base address. */ | |
3296 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
3297 | found_base = 1; | |
3298 | continue; | |
3299 | } | |
3300 | ||
3301 | if (!found_base) | |
3302 | { | |
3303 | /* We have no valid base address for the ranges | |
3304 | data. */ | |
3305 | complaint (&symfile_complaints, | |
3306 | _("Invalid .debug_ranges data (no base address)")); | |
3307 | return 0; | |
3308 | } | |
3309 | ||
3310 | range_beginning += base; | |
3311 | range_end += base; | |
3312 | ||
ff013f42 JK |
3313 | if (ranges_pst != NULL && range_beginning < range_end) |
3314 | addrmap_set_empty (objfile->psymtabs_addrmap, | |
3315 | range_beginning + baseaddr, range_end - 1 + baseaddr, | |
3316 | ranges_pst); | |
3317 | ||
43039443 JK |
3318 | /* FIXME: This is recording everything as a low-high |
3319 | segment of consecutive addresses. We should have a | |
3320 | data structure for discontiguous block ranges | |
3321 | instead. */ | |
3322 | if (! low_set) | |
3323 | { | |
3324 | low = range_beginning; | |
3325 | high = range_end; | |
3326 | low_set = 1; | |
3327 | } | |
3328 | else | |
3329 | { | |
3330 | if (range_beginning < low) | |
3331 | low = range_beginning; | |
3332 | if (range_end > high) | |
3333 | high = range_end; | |
3334 | } | |
3335 | } | |
3336 | ||
3337 | if (! low_set) | |
3338 | /* If the first entry is an end-of-list marker, the range | |
3339 | describes an empty scope, i.e. no instructions. */ | |
3340 | return 0; | |
3341 | ||
3342 | if (low_return) | |
3343 | *low_return = low; | |
3344 | if (high_return) | |
3345 | *high_return = high; | |
3346 | return 1; | |
3347 | } | |
3348 | ||
af34e669 DJ |
3349 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
3350 | are present and valid, otherwise, return 0. Return -1 if the range is | |
3351 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 3352 | static int |
af34e669 | 3353 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 3354 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c SS |
3355 | { |
3356 | struct attribute *attr; | |
af34e669 DJ |
3357 | CORE_ADDR low = 0; |
3358 | CORE_ADDR high = 0; | |
3359 | int ret = 0; | |
c906108c | 3360 | |
e142c38c | 3361 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 3362 | if (attr) |
af34e669 DJ |
3363 | { |
3364 | high = DW_ADDR (attr); | |
e142c38c | 3365 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
3366 | if (attr) |
3367 | low = DW_ADDR (attr); | |
3368 | else | |
3369 | /* Found high w/o low attribute. */ | |
3370 | return 0; | |
3371 | ||
3372 | /* Found consecutive range of addresses. */ | |
3373 | ret = 1; | |
3374 | } | |
c906108c | 3375 | else |
af34e669 | 3376 | { |
e142c38c | 3377 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
3378 | if (attr != NULL) |
3379 | { | |
af34e669 | 3380 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 3381 | .debug_ranges section. */ |
ff013f42 | 3382 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu, NULL)) |
af34e669 | 3383 | return 0; |
43039443 | 3384 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
3385 | ret = -1; |
3386 | } | |
3387 | } | |
c906108c SS |
3388 | |
3389 | if (high < low) | |
3390 | return 0; | |
3391 | ||
3392 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
3393 | eliminate duplicate copies of functions and vtables and such. | |
3394 | The linker will arbitrarily choose one and discard the others. | |
3395 | The AT_*_pc values for such functions refer to local labels in | |
3396 | these sections. If the section from that file was discarded, the | |
3397 | labels are not in the output, so the relocs get a value of 0. | |
3398 | If this is a discarded function, mark the pc bounds as invalid, | |
3399 | so that GDB will ignore it. */ | |
72dca2f5 | 3400 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
3401 | return 0; |
3402 | ||
3403 | *lowpc = low; | |
3404 | *highpc = high; | |
af34e669 | 3405 | return ret; |
c906108c SS |
3406 | } |
3407 | ||
b084d499 JB |
3408 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
3409 | its low and high PC addresses. Do nothing if these addresses could not | |
3410 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
3411 | and HIGHPC to the high address if greater than HIGHPC. */ | |
3412 | ||
3413 | static void | |
3414 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
3415 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3416 | struct dwarf2_cu *cu) | |
3417 | { | |
3418 | CORE_ADDR low, high; | |
3419 | struct die_info *child = die->child; | |
3420 | ||
3421 | if (dwarf2_get_pc_bounds (die, &low, &high, cu)) | |
3422 | { | |
3423 | *lowpc = min (*lowpc, low); | |
3424 | *highpc = max (*highpc, high); | |
3425 | } | |
3426 | ||
3427 | /* If the language does not allow nested subprograms (either inside | |
3428 | subprograms or lexical blocks), we're done. */ | |
3429 | if (cu->language != language_ada) | |
3430 | return; | |
3431 | ||
3432 | /* Check all the children of the given DIE. If it contains nested | |
3433 | subprograms, then check their pc bounds. Likewise, we need to | |
3434 | check lexical blocks as well, as they may also contain subprogram | |
3435 | definitions. */ | |
3436 | while (child && child->tag) | |
3437 | { | |
3438 | if (child->tag == DW_TAG_subprogram | |
3439 | || child->tag == DW_TAG_lexical_block) | |
3440 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
3441 | child = sibling_die (child); | |
3442 | } | |
3443 | } | |
3444 | ||
fae299cd DC |
3445 | /* Get the low and high pc's represented by the scope DIE, and store |
3446 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
3447 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
3448 | ||
3449 | static void | |
3450 | get_scope_pc_bounds (struct die_info *die, | |
3451 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3452 | struct dwarf2_cu *cu) | |
3453 | { | |
3454 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
3455 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
3456 | CORE_ADDR current_low, current_high; | |
3457 | ||
3458 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
3459 | { | |
3460 | best_low = current_low; | |
3461 | best_high = current_high; | |
3462 | } | |
3463 | else | |
3464 | { | |
3465 | struct die_info *child = die->child; | |
3466 | ||
3467 | while (child && child->tag) | |
3468 | { | |
3469 | switch (child->tag) { | |
3470 | case DW_TAG_subprogram: | |
b084d499 | 3471 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
3472 | break; |
3473 | case DW_TAG_namespace: | |
3474 | /* FIXME: carlton/2004-01-16: Should we do this for | |
3475 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
3476 | that current GCC's always emit the DIEs corresponding | |
3477 | to definitions of methods of classes as children of a | |
3478 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
3479 | the DIEs giving the declarations, which could be | |
3480 | anywhere). But I don't see any reason why the | |
3481 | standards says that they have to be there. */ | |
3482 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
3483 | ||
3484 | if (current_low != ((CORE_ADDR) -1)) | |
3485 | { | |
3486 | best_low = min (best_low, current_low); | |
3487 | best_high = max (best_high, current_high); | |
3488 | } | |
3489 | break; | |
3490 | default: | |
3491 | /* Ignore. */ | |
3492 | break; | |
3493 | } | |
3494 | ||
3495 | child = sibling_die (child); | |
3496 | } | |
3497 | } | |
3498 | ||
3499 | *lowpc = best_low; | |
3500 | *highpc = best_high; | |
3501 | } | |
3502 | ||
801e3a5b JB |
3503 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
3504 | in DIE. */ | |
3505 | static void | |
3506 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
3507 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
3508 | { | |
3509 | struct attribute *attr; | |
3510 | ||
3511 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
3512 | if (attr) | |
3513 | { | |
3514 | CORE_ADDR high = DW_ADDR (attr); | |
3515 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3516 | if (attr) | |
3517 | { | |
3518 | CORE_ADDR low = DW_ADDR (attr); | |
3519 | record_block_range (block, baseaddr + low, baseaddr + high - 1); | |
3520 | } | |
3521 | } | |
3522 | ||
3523 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
3524 | if (attr) | |
3525 | { | |
3526 | bfd *obfd = cu->objfile->obfd; | |
3527 | ||
3528 | /* The value of the DW_AT_ranges attribute is the offset of the | |
3529 | address range list in the .debug_ranges section. */ | |
3530 | unsigned long offset = DW_UNSND (attr); | |
3531 | gdb_byte *buffer = dwarf2_per_objfile->ranges_buffer + offset; | |
3532 | ||
3533 | /* For some target architectures, but not others, the | |
3534 | read_address function sign-extends the addresses it returns. | |
3535 | To recognize base address selection entries, we need a | |
3536 | mask. */ | |
3537 | unsigned int addr_size = cu->header.addr_size; | |
3538 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3539 | ||
3540 | /* The base address, to which the next pair is relative. Note | |
3541 | that this 'base' is a DWARF concept: most entries in a range | |
3542 | list are relative, to reduce the number of relocs against the | |
3543 | debugging information. This is separate from this function's | |
3544 | 'baseaddr' argument, which GDB uses to relocate debugging | |
3545 | information from a shared library based on the address at | |
3546 | which the library was loaded. */ | |
d00adf39 DE |
3547 | CORE_ADDR base = cu->base_address; |
3548 | int base_known = cu->base_known; | |
801e3a5b JB |
3549 | |
3550 | if (offset >= dwarf2_per_objfile->ranges_size) | |
3551 | { | |
3552 | complaint (&symfile_complaints, | |
3553 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
3554 | offset); | |
3555 | return; | |
3556 | } | |
3557 | ||
3558 | for (;;) | |
3559 | { | |
3560 | unsigned int bytes_read; | |
3561 | CORE_ADDR start, end; | |
3562 | ||
3563 | start = read_address (obfd, buffer, cu, &bytes_read); | |
3564 | buffer += bytes_read; | |
3565 | end = read_address (obfd, buffer, cu, &bytes_read); | |
3566 | buffer += bytes_read; | |
3567 | ||
3568 | /* Did we find the end of the range list? */ | |
3569 | if (start == 0 && end == 0) | |
3570 | break; | |
3571 | ||
3572 | /* Did we find a base address selection entry? */ | |
3573 | else if ((start & base_select_mask) == base_select_mask) | |
3574 | { | |
3575 | base = end; | |
3576 | base_known = 1; | |
3577 | } | |
3578 | ||
3579 | /* We found an ordinary address range. */ | |
3580 | else | |
3581 | { | |
3582 | if (!base_known) | |
3583 | { | |
3584 | complaint (&symfile_complaints, | |
3585 | _("Invalid .debug_ranges data (no base address)")); | |
3586 | return; | |
3587 | } | |
3588 | ||
3589 | record_block_range (block, | |
3590 | baseaddr + base + start, | |
3591 | baseaddr + base + end - 1); | |
3592 | } | |
3593 | } | |
3594 | } | |
3595 | } | |
3596 | ||
c906108c SS |
3597 | /* Add an aggregate field to the field list. */ |
3598 | ||
3599 | static void | |
107d2387 | 3600 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
3601 | struct dwarf2_cu *cu) |
3602 | { | |
3603 | struct objfile *objfile = cu->objfile; | |
5e2b427d | 3604 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
3605 | struct nextfield *new_field; |
3606 | struct attribute *attr; | |
3607 | struct field *fp; | |
3608 | char *fieldname = ""; | |
3609 | ||
3610 | /* Allocate a new field list entry and link it in. */ | |
3611 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3612 | make_cleanup (xfree, new_field); |
c906108c SS |
3613 | memset (new_field, 0, sizeof (struct nextfield)); |
3614 | new_field->next = fip->fields; | |
3615 | fip->fields = new_field; | |
3616 | fip->nfields++; | |
3617 | ||
3618 | /* Handle accessibility and virtuality of field. | |
3619 | The default accessibility for members is public, the default | |
3620 | accessibility for inheritance is private. */ | |
3621 | if (die->tag != DW_TAG_inheritance) | |
3622 | new_field->accessibility = DW_ACCESS_public; | |
3623 | else | |
3624 | new_field->accessibility = DW_ACCESS_private; | |
3625 | new_field->virtuality = DW_VIRTUALITY_none; | |
3626 | ||
e142c38c | 3627 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3628 | if (attr) |
3629 | new_field->accessibility = DW_UNSND (attr); | |
3630 | if (new_field->accessibility != DW_ACCESS_public) | |
3631 | fip->non_public_fields = 1; | |
e142c38c | 3632 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
3633 | if (attr) |
3634 | new_field->virtuality = DW_UNSND (attr); | |
3635 | ||
3636 | fp = &new_field->field; | |
a9a9bd0f | 3637 | |
e142c38c | 3638 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 3639 | { |
a9a9bd0f DC |
3640 | /* Data member other than a C++ static data member. */ |
3641 | ||
c906108c | 3642 | /* Get type of field. */ |
e7c27a73 | 3643 | fp->type = die_type (die, cu); |
c906108c | 3644 | |
d6a843b5 | 3645 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 3646 | |
c906108c | 3647 | /* Get bit size of field (zero if none). */ |
e142c38c | 3648 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
3649 | if (attr) |
3650 | { | |
3651 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
3652 | } | |
3653 | else | |
3654 | { | |
3655 | FIELD_BITSIZE (*fp) = 0; | |
3656 | } | |
3657 | ||
3658 | /* Get bit offset of field. */ | |
e142c38c | 3659 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
3660 | if (attr) |
3661 | { | |
c6a0999f JB |
3662 | int byte_offset; |
3663 | ||
3690dd37 JB |
3664 | if (attr_form_is_section_offset (attr)) |
3665 | { | |
3666 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 3667 | byte_offset = 0; |
3690dd37 JB |
3668 | } |
3669 | else if (attr_form_is_constant (attr)) | |
c6a0999f | 3670 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
3690dd37 | 3671 | else |
c6a0999f JB |
3672 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
3673 | ||
d6a843b5 | 3674 | SET_FIELD_BITPOS (*fp, byte_offset * bits_per_byte); |
c906108c | 3675 | } |
e142c38c | 3676 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
3677 | if (attr) |
3678 | { | |
5e2b427d | 3679 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
3680 | { |
3681 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
3682 | additional bit offset from the MSB of the containing |
3683 | anonymous object to the MSB of the field. We don't | |
3684 | have to do anything special since we don't need to | |
3685 | know the size of the anonymous object. */ | |
c906108c SS |
3686 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
3687 | } | |
3688 | else | |
3689 | { | |
3690 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
3691 | MSB of the anonymous object, subtract off the number of |
3692 | bits from the MSB of the field to the MSB of the | |
3693 | object, and then subtract off the number of bits of | |
3694 | the field itself. The result is the bit offset of | |
3695 | the LSB of the field. */ | |
c906108c SS |
3696 | int anonymous_size; |
3697 | int bit_offset = DW_UNSND (attr); | |
3698 | ||
e142c38c | 3699 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3700 | if (attr) |
3701 | { | |
3702 | /* The size of the anonymous object containing | |
3703 | the bit field is explicit, so use the | |
3704 | indicated size (in bytes). */ | |
3705 | anonymous_size = DW_UNSND (attr); | |
3706 | } | |
3707 | else | |
3708 | { | |
3709 | /* The size of the anonymous object containing | |
3710 | the bit field must be inferred from the type | |
3711 | attribute of the data member containing the | |
3712 | bit field. */ | |
3713 | anonymous_size = TYPE_LENGTH (fp->type); | |
3714 | } | |
3715 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
3716 | - bit_offset - FIELD_BITSIZE (*fp); | |
3717 | } | |
3718 | } | |
3719 | ||
3720 | /* Get name of field. */ | |
39cbfefa DJ |
3721 | fieldname = dwarf2_name (die, cu); |
3722 | if (fieldname == NULL) | |
3723 | fieldname = ""; | |
d8151005 DJ |
3724 | |
3725 | /* The name is already allocated along with this objfile, so we don't | |
3726 | need to duplicate it for the type. */ | |
3727 | fp->name = fieldname; | |
c906108c SS |
3728 | |
3729 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 3730 | pointer or virtual base class pointer) to private. */ |
e142c38c | 3731 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
3732 | { |
3733 | new_field->accessibility = DW_ACCESS_private; | |
3734 | fip->non_public_fields = 1; | |
3735 | } | |
3736 | } | |
a9a9bd0f | 3737 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 3738 | { |
a9a9bd0f DC |
3739 | /* C++ static member. */ |
3740 | ||
3741 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
3742 | is a declaration, but all versions of G++ as of this writing | |
3743 | (so through at least 3.2.1) incorrectly generate | |
3744 | DW_TAG_variable tags. */ | |
3745 | ||
c906108c | 3746 | char *physname; |
c906108c | 3747 | |
a9a9bd0f | 3748 | /* Get name of field. */ |
39cbfefa DJ |
3749 | fieldname = dwarf2_name (die, cu); |
3750 | if (fieldname == NULL) | |
c906108c SS |
3751 | return; |
3752 | ||
2df3850c | 3753 | /* Get physical name. */ |
e142c38c | 3754 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 3755 | |
d8151005 DJ |
3756 | /* The name is already allocated along with this objfile, so we don't |
3757 | need to duplicate it for the type. */ | |
3758 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 3759 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 3760 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
3761 | } |
3762 | else if (die->tag == DW_TAG_inheritance) | |
3763 | { | |
3764 | /* C++ base class field. */ | |
e142c38c | 3765 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 3766 | if (attr) |
d6a843b5 JK |
3767 | SET_FIELD_BITPOS (*fp, decode_locdesc (DW_BLOCK (attr), cu) |
3768 | * bits_per_byte); | |
c906108c | 3769 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 3770 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
3771 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
3772 | fip->nbaseclasses++; | |
3773 | } | |
3774 | } | |
3775 | ||
3776 | /* Create the vector of fields, and attach it to the type. */ | |
3777 | ||
3778 | static void | |
fba45db2 | 3779 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3780 | struct dwarf2_cu *cu) |
c906108c SS |
3781 | { |
3782 | int nfields = fip->nfields; | |
3783 | ||
3784 | /* Record the field count, allocate space for the array of fields, | |
3785 | and create blank accessibility bitfields if necessary. */ | |
3786 | TYPE_NFIELDS (type) = nfields; | |
3787 | TYPE_FIELDS (type) = (struct field *) | |
3788 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3789 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3790 | ||
3791 | if (fip->non_public_fields) | |
3792 | { | |
3793 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3794 | ||
3795 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3796 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3797 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3798 | ||
3799 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3800 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3801 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3802 | ||
3803 | TYPE_FIELD_IGNORE_BITS (type) = | |
3804 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3805 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3806 | } | |
3807 | ||
3808 | /* If the type has baseclasses, allocate and clear a bit vector for | |
3809 | TYPE_FIELD_VIRTUAL_BITS. */ | |
3810 | if (fip->nbaseclasses) | |
3811 | { | |
3812 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 3813 | unsigned char *pointer; |
c906108c SS |
3814 | |
3815 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
3816 | pointer = TYPE_ALLOC (type, num_bytes); |
3817 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
3818 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
3819 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
3820 | } | |
3821 | ||
3822 | /* Copy the saved-up fields into the field vector. Start from the head | |
3823 | of the list, adding to the tail of the field array, so that they end | |
3824 | up in the same order in the array in which they were added to the list. */ | |
3825 | while (nfields-- > 0) | |
3826 | { | |
3827 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
3828 | switch (fip->fields->accessibility) | |
3829 | { | |
c5aa993b JM |
3830 | case DW_ACCESS_private: |
3831 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3832 | break; | |
c906108c | 3833 | |
c5aa993b JM |
3834 | case DW_ACCESS_protected: |
3835 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3836 | break; | |
c906108c | 3837 | |
c5aa993b JM |
3838 | case DW_ACCESS_public: |
3839 | break; | |
c906108c | 3840 | |
c5aa993b JM |
3841 | default: |
3842 | /* Unknown accessibility. Complain and treat it as public. */ | |
3843 | { | |
e2e0b3e5 | 3844 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
4d3c2250 | 3845 | fip->fields->accessibility); |
c5aa993b JM |
3846 | } |
3847 | break; | |
c906108c SS |
3848 | } |
3849 | if (nfields < fip->nbaseclasses) | |
3850 | { | |
3851 | switch (fip->fields->virtuality) | |
3852 | { | |
c5aa993b JM |
3853 | case DW_VIRTUALITY_virtual: |
3854 | case DW_VIRTUALITY_pure_virtual: | |
3855 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
3856 | break; | |
c906108c SS |
3857 | } |
3858 | } | |
3859 | fip->fields = fip->fields->next; | |
3860 | } | |
3861 | } | |
3862 | ||
c906108c SS |
3863 | /* Add a member function to the proper fieldlist. */ |
3864 | ||
3865 | static void | |
107d2387 | 3866 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 3867 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 3868 | { |
e7c27a73 | 3869 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3870 | struct attribute *attr; |
3871 | struct fnfieldlist *flp; | |
3872 | int i; | |
3873 | struct fn_field *fnp; | |
3874 | char *fieldname; | |
3875 | char *physname; | |
3876 | struct nextfnfield *new_fnfield; | |
f792889a | 3877 | struct type *this_type; |
c906108c | 3878 | |
2df3850c | 3879 | /* Get name of member function. */ |
39cbfefa DJ |
3880 | fieldname = dwarf2_name (die, cu); |
3881 | if (fieldname == NULL) | |
2df3850c | 3882 | return; |
c906108c | 3883 | |
2df3850c | 3884 | /* Get the mangled name. */ |
e142c38c | 3885 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
3886 | |
3887 | /* Look up member function name in fieldlist. */ | |
3888 | for (i = 0; i < fip->nfnfields; i++) | |
3889 | { | |
27bfe10e | 3890 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
3891 | break; |
3892 | } | |
3893 | ||
3894 | /* Create new list element if necessary. */ | |
3895 | if (i < fip->nfnfields) | |
3896 | flp = &fip->fnfieldlists[i]; | |
3897 | else | |
3898 | { | |
3899 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3900 | { | |
3901 | fip->fnfieldlists = (struct fnfieldlist *) | |
3902 | xrealloc (fip->fnfieldlists, | |
3903 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3904 | * sizeof (struct fnfieldlist)); |
c906108c | 3905 | if (fip->nfnfields == 0) |
c13c43fd | 3906 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
3907 | } |
3908 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
3909 | flp->name = fieldname; | |
3910 | flp->length = 0; | |
3911 | flp->head = NULL; | |
3912 | fip->nfnfields++; | |
3913 | } | |
3914 | ||
3915 | /* Create a new member function field and chain it to the field list | |
3916 | entry. */ | |
3917 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 3918 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
3919 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
3920 | new_fnfield->next = flp->head; | |
3921 | flp->head = new_fnfield; | |
3922 | flp->length++; | |
3923 | ||
3924 | /* Fill in the member function field info. */ | |
3925 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
3926 | /* The name is already allocated along with this objfile, so we don't |
3927 | need to duplicate it for the type. */ | |
3928 | fnp->physname = physname ? physname : ""; | |
c906108c | 3929 | fnp->type = alloc_type (objfile); |
f792889a DJ |
3930 | this_type = read_type_die (die, cu); |
3931 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 3932 | { |
f792889a | 3933 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 3934 | |
f792889a | 3935 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
3936 | of the method itself (TYPE_CODE_METHOD). */ |
3937 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
3938 | TYPE_TARGET_TYPE (this_type), |
3939 | TYPE_FIELDS (this_type), | |
3940 | TYPE_NFIELDS (this_type), | |
3941 | TYPE_VARARGS (this_type)); | |
c906108c SS |
3942 | |
3943 | /* Handle static member functions. | |
c5aa993b JM |
3944 | Dwarf2 has no clean way to discern C++ static and non-static |
3945 | member functions. G++ helps GDB by marking the first | |
3946 | parameter for non-static member functions (which is the | |
3947 | this pointer) as artificial. We obtain this information | |
3948 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 3949 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
3950 | fnp->voffset = VOFFSET_STATIC; |
3951 | } | |
3952 | else | |
e2e0b3e5 | 3953 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 3954 | physname); |
c906108c SS |
3955 | |
3956 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 3957 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 3958 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
3959 | |
3960 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
3961 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
3962 | ||
3963 | /* Get accessibility. */ | |
e142c38c | 3964 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3965 | if (attr) |
3966 | { | |
3967 | switch (DW_UNSND (attr)) | |
3968 | { | |
c5aa993b JM |
3969 | case DW_ACCESS_private: |
3970 | fnp->is_private = 1; | |
3971 | break; | |
3972 | case DW_ACCESS_protected: | |
3973 | fnp->is_protected = 1; | |
3974 | break; | |
c906108c SS |
3975 | } |
3976 | } | |
3977 | ||
b02dede2 | 3978 | /* Check for artificial methods. */ |
e142c38c | 3979 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3980 | if (attr && DW_UNSND (attr) != 0) |
3981 | fnp->is_artificial = 1; | |
3982 | ||
c906108c | 3983 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3984 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3985 | if (attr) |
8e19ed76 PS |
3986 | { |
3987 | /* Support the .debug_loc offsets */ | |
3988 | if (attr_form_is_block (attr)) | |
3989 | { | |
e7c27a73 | 3990 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 | 3991 | } |
3690dd37 | 3992 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 3993 | { |
4d3c2250 | 3994 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3995 | } |
3996 | else | |
3997 | { | |
4d3c2250 KB |
3998 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3999 | fieldname); | |
8e19ed76 PS |
4000 | } |
4001 | } | |
c906108c SS |
4002 | } |
4003 | ||
4004 | /* Create the vector of member function fields, and attach it to the type. */ | |
4005 | ||
4006 | static void | |
fba45db2 | 4007 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 4008 | struct dwarf2_cu *cu) |
c906108c SS |
4009 | { |
4010 | struct fnfieldlist *flp; | |
4011 | int total_length = 0; | |
4012 | int i; | |
4013 | ||
4014 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
4015 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
4016 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
4017 | ||
4018 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
4019 | { | |
4020 | struct nextfnfield *nfp = flp->head; | |
4021 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
4022 | int k; | |
4023 | ||
4024 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
4025 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
4026 | fn_flp->fn_fields = (struct fn_field *) | |
4027 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
4028 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 4029 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
4030 | |
4031 | total_length += flp->length; | |
4032 | } | |
4033 | ||
4034 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
4035 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
4036 | } | |
4037 | ||
1168df01 JB |
4038 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
4039 | language, zero otherwise. */ | |
4040 | static int | |
4041 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
4042 | { | |
4043 | static const char vptr[] = "_vptr"; | |
987504bb | 4044 | static const char vtable[] = "vtable"; |
1168df01 | 4045 | |
987504bb JJ |
4046 | /* Look for the C++ and Java forms of the vtable. */ |
4047 | if ((cu->language == language_java | |
4048 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
4049 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
4050 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
4051 | return 1; |
4052 | ||
4053 | return 0; | |
4054 | } | |
4055 | ||
c0dd20ea DJ |
4056 | /* GCC outputs unnamed structures that are really pointers to member |
4057 | functions, with the ABI-specified layout. If DIE (from CU) describes | |
4058 | such a structure, set its type, and return nonzero. Otherwise return | |
61049d3b DJ |
4059 | zero. |
4060 | ||
4061 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
4062 | This is GCC PR debug/28767. */ | |
c0dd20ea | 4063 | |
f792889a | 4064 | static struct type * |
c0dd20ea DJ |
4065 | quirk_gcc_member_function_pointer (struct die_info *die, struct dwarf2_cu *cu) |
4066 | { | |
4067 | struct objfile *objfile = cu->objfile; | |
4068 | struct type *type; | |
4069 | struct die_info *pfn_die, *delta_die; | |
4070 | struct attribute *pfn_name, *delta_name; | |
4071 | struct type *pfn_type, *domain_type; | |
4072 | ||
4073 | /* Check for a structure with no name and two children. */ | |
4074 | if (die->tag != DW_TAG_structure_type | |
4075 | || dwarf2_attr (die, DW_AT_name, cu) != NULL | |
4076 | || die->child == NULL | |
4077 | || die->child->sibling == NULL | |
4078 | || (die->child->sibling->sibling != NULL | |
4079 | && die->child->sibling->sibling->tag != DW_TAG_padding)) | |
f792889a | 4080 | return NULL; |
c0dd20ea DJ |
4081 | |
4082 | /* Check for __pfn and __delta members. */ | |
4083 | pfn_die = die->child; | |
4084 | pfn_name = dwarf2_attr (pfn_die, DW_AT_name, cu); | |
4085 | if (pfn_die->tag != DW_TAG_member | |
4086 | || pfn_name == NULL | |
4087 | || DW_STRING (pfn_name) == NULL | |
4088 | || strcmp ("__pfn", DW_STRING (pfn_name)) != 0) | |
f792889a | 4089 | return NULL; |
c0dd20ea DJ |
4090 | |
4091 | delta_die = pfn_die->sibling; | |
4092 | delta_name = dwarf2_attr (delta_die, DW_AT_name, cu); | |
4093 | if (delta_die->tag != DW_TAG_member | |
4094 | || delta_name == NULL | |
4095 | || DW_STRING (delta_name) == NULL | |
4096 | || strcmp ("__delta", DW_STRING (delta_name)) != 0) | |
f792889a | 4097 | return NULL; |
c0dd20ea DJ |
4098 | |
4099 | /* Find the type of the method. */ | |
4100 | pfn_type = die_type (pfn_die, cu); | |
4101 | if (pfn_type == NULL | |
4102 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
4103 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
f792889a | 4104 | return NULL; |
c0dd20ea DJ |
4105 | |
4106 | /* Look for the "this" argument. */ | |
4107 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
4108 | if (TYPE_NFIELDS (pfn_type) == 0 | |
4109 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) | |
f792889a | 4110 | return NULL; |
c0dd20ea DJ |
4111 | |
4112 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
4113 | type = alloc_type (objfile); | |
4114 | smash_to_method_type (type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
4115 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), | |
4116 | TYPE_VARARGS (pfn_type)); | |
0d5de010 | 4117 | type = lookup_methodptr_type (type); |
f792889a | 4118 | return set_die_type (die, type, cu); |
c0dd20ea | 4119 | } |
1168df01 | 4120 | |
c906108c SS |
4121 | /* Called when we find the DIE that starts a structure or union scope |
4122 | (definition) to process all dies that define the members of the | |
4123 | structure or union. | |
4124 | ||
4125 | NOTE: we need to call struct_type regardless of whether or not the | |
4126 | DIE has an at_name attribute, since it might be an anonymous | |
4127 | structure or union. This gets the type entered into our set of | |
4128 | user defined types. | |
4129 | ||
4130 | However, if the structure is incomplete (an opaque struct/union) | |
4131 | then suppress creating a symbol table entry for it since gdb only | |
4132 | wants to find the one with the complete definition. Note that if | |
4133 | it is complete, we just call new_symbol, which does it's own | |
4134 | checking about whether the struct/union is anonymous or not (and | |
4135 | suppresses creating a symbol table entry itself). */ | |
4136 | ||
f792889a | 4137 | static struct type * |
134d01f1 | 4138 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4139 | { |
e7c27a73 | 4140 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4141 | struct type *type; |
4142 | struct attribute *attr; | |
39cbfefa | 4143 | char *name; |
0114d602 | 4144 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
c906108c | 4145 | |
f792889a DJ |
4146 | type = quirk_gcc_member_function_pointer (die, cu); |
4147 | if (type) | |
4148 | return type; | |
c906108c | 4149 | |
c0dd20ea | 4150 | type = alloc_type (objfile); |
c906108c | 4151 | INIT_CPLUS_SPECIFIC (type); |
39cbfefa DJ |
4152 | name = dwarf2_name (die, cu); |
4153 | if (name != NULL) | |
c906108c | 4154 | { |
987504bb JJ |
4155 | if (cu->language == language_cplus |
4156 | || cu->language == language_java) | |
63d06c5c | 4157 | { |
0114d602 DJ |
4158 | const char *new_prefix = determine_class_name (die, cu); |
4159 | TYPE_TAG_NAME (type) = (char *) new_prefix; | |
63d06c5c DC |
4160 | } |
4161 | else | |
4162 | { | |
d8151005 DJ |
4163 | /* The name is already allocated along with this objfile, so |
4164 | we don't need to duplicate it for the type. */ | |
39cbfefa | 4165 | TYPE_TAG_NAME (type) = name; |
63d06c5c | 4166 | } |
c906108c SS |
4167 | } |
4168 | ||
4169 | if (die->tag == DW_TAG_structure_type) | |
4170 | { | |
4171 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
4172 | } | |
4173 | else if (die->tag == DW_TAG_union_type) | |
4174 | { | |
4175 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
4176 | } | |
4177 | else | |
4178 | { | |
4179 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 4180 | in gdbtypes.h. */ |
c906108c SS |
4181 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
4182 | } | |
4183 | ||
e142c38c | 4184 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4185 | if (attr) |
4186 | { | |
4187 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4188 | } | |
4189 | else | |
4190 | { | |
4191 | TYPE_LENGTH (type) = 0; | |
4192 | } | |
4193 | ||
876cecd0 | 4194 | TYPE_STUB_SUPPORTED (type) = 1; |
dc718098 | 4195 | if (die_is_declaration (die, cu)) |
876cecd0 | 4196 | TYPE_STUB (type) = 1; |
dc718098 | 4197 | |
c906108c SS |
4198 | /* We need to add the type field to the die immediately so we don't |
4199 | infinitely recurse when dealing with pointers to the structure | |
4200 | type within the structure itself. */ | |
1c379e20 | 4201 | set_die_type (die, type, cu); |
c906108c | 4202 | |
e142c38c | 4203 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
4204 | { |
4205 | struct field_info fi; | |
4206 | struct die_info *child_die; | |
c906108c SS |
4207 | |
4208 | memset (&fi, 0, sizeof (struct field_info)); | |
4209 | ||
639d11d3 | 4210 | child_die = die->child; |
c906108c SS |
4211 | |
4212 | while (child_die && child_die->tag) | |
4213 | { | |
a9a9bd0f DC |
4214 | if (child_die->tag == DW_TAG_member |
4215 | || child_die->tag == DW_TAG_variable) | |
c906108c | 4216 | { |
a9a9bd0f DC |
4217 | /* NOTE: carlton/2002-11-05: A C++ static data member |
4218 | should be a DW_TAG_member that is a declaration, but | |
4219 | all versions of G++ as of this writing (so through at | |
4220 | least 3.2.1) incorrectly generate DW_TAG_variable | |
4221 | tags for them instead. */ | |
e7c27a73 | 4222 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 4223 | } |
8713b1b1 | 4224 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
4225 | { |
4226 | /* C++ member function. */ | |
e7c27a73 | 4227 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
4228 | } |
4229 | else if (child_die->tag == DW_TAG_inheritance) | |
4230 | { | |
4231 | /* C++ base class field. */ | |
e7c27a73 | 4232 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 4233 | } |
c906108c SS |
4234 | child_die = sibling_die (child_die); |
4235 | } | |
4236 | ||
4237 | /* Attach fields and member functions to the type. */ | |
4238 | if (fi.nfields) | |
e7c27a73 | 4239 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
4240 | if (fi.nfnfields) |
4241 | { | |
e7c27a73 | 4242 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 4243 | |
c5aa993b | 4244 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
4245 | class itself) which contains the vtable pointer for the current |
4246 | class from the DW_AT_containing_type attribute. */ | |
4247 | ||
e142c38c | 4248 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 4249 | { |
e7c27a73 | 4250 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
4251 | |
4252 | TYPE_VPTR_BASETYPE (type) = t; | |
4253 | if (type == t) | |
4254 | { | |
c906108c SS |
4255 | int i; |
4256 | ||
4257 | /* Our own class provides vtbl ptr. */ | |
4258 | for (i = TYPE_NFIELDS (t) - 1; | |
4259 | i >= TYPE_N_BASECLASSES (t); | |
4260 | --i) | |
4261 | { | |
4262 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
4263 | ||
1168df01 | 4264 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
4265 | { |
4266 | TYPE_VPTR_FIELDNO (type) = i; | |
4267 | break; | |
4268 | } | |
4269 | } | |
4270 | ||
4271 | /* Complain if virtual function table field not found. */ | |
4272 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 4273 | complaint (&symfile_complaints, |
e2e0b3e5 | 4274 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
4275 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
4276 | ""); | |
c906108c SS |
4277 | } |
4278 | else | |
4279 | { | |
4280 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
4281 | } | |
4282 | } | |
f6235d4c EZ |
4283 | else if (cu->producer |
4284 | && strncmp (cu->producer, | |
4285 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
4286 | { | |
4287 | /* The IBM XLC compiler does not provide direct indication | |
4288 | of the containing type, but the vtable pointer is | |
4289 | always named __vfp. */ | |
4290 | ||
4291 | int i; | |
4292 | ||
4293 | for (i = TYPE_NFIELDS (type) - 1; | |
4294 | i >= TYPE_N_BASECLASSES (type); | |
4295 | --i) | |
4296 | { | |
4297 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
4298 | { | |
4299 | TYPE_VPTR_FIELDNO (type) = i; | |
4300 | TYPE_VPTR_BASETYPE (type) = type; | |
4301 | break; | |
4302 | } | |
4303 | } | |
4304 | } | |
c906108c | 4305 | } |
c906108c | 4306 | } |
63d06c5c | 4307 | |
0114d602 | 4308 | do_cleanups (back_to); |
f792889a | 4309 | return type; |
c906108c SS |
4310 | } |
4311 | ||
134d01f1 DJ |
4312 | static void |
4313 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4314 | { | |
4315 | struct objfile *objfile = cu->objfile; | |
90aeadfc | 4316 | struct die_info *child_die = die->child; |
f792889a | 4317 | struct type *this_type; |
c906108c | 4318 | |
f792889a DJ |
4319 | this_type = get_die_type (die, cu); |
4320 | if (this_type == NULL) | |
4321 | this_type = read_structure_type (die, cu); | |
c906108c | 4322 | |
90aeadfc DC |
4323 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
4324 | snapshots) has been known to create a die giving a declaration | |
4325 | for a class that has, as a child, a die giving a definition for a | |
4326 | nested class. So we have to process our children even if the | |
4327 | current die is a declaration. Normally, of course, a declaration | |
4328 | won't have any children at all. */ | |
134d01f1 | 4329 | |
90aeadfc DC |
4330 | while (child_die != NULL && child_die->tag) |
4331 | { | |
4332 | if (child_die->tag == DW_TAG_member | |
4333 | || child_die->tag == DW_TAG_variable | |
4334 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 4335 | { |
90aeadfc | 4336 | /* Do nothing. */ |
134d01f1 | 4337 | } |
90aeadfc DC |
4338 | else |
4339 | process_die (child_die, cu); | |
134d01f1 | 4340 | |
90aeadfc | 4341 | child_die = sibling_die (child_die); |
134d01f1 DJ |
4342 | } |
4343 | ||
fa4028e9 JB |
4344 | /* Do not consider external references. According to the DWARF standard, |
4345 | these DIEs are identified by the fact that they have no byte_size | |
4346 | attribute, and a declaration attribute. */ | |
4347 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
4348 | || !die_is_declaration (die, cu)) | |
f792889a | 4349 | new_symbol (die, this_type, cu); |
134d01f1 DJ |
4350 | } |
4351 | ||
4352 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
4353 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 4354 | |
f792889a | 4355 | static struct type * |
134d01f1 | 4356 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4357 | { |
e7c27a73 | 4358 | struct objfile *objfile = cu->objfile; |
c906108c | 4359 | struct type *type; |
c906108c | 4360 | struct attribute *attr; |
0114d602 | 4361 | const char *name; |
134d01f1 | 4362 | |
c906108c SS |
4363 | type = alloc_type (objfile); |
4364 | ||
4365 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
0114d602 | 4366 | name = dwarf2_full_name (die, cu); |
39cbfefa | 4367 | if (name != NULL) |
0114d602 | 4368 | TYPE_TAG_NAME (type) = (char *) name; |
c906108c | 4369 | |
e142c38c | 4370 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4371 | if (attr) |
4372 | { | |
4373 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4374 | } | |
4375 | else | |
4376 | { | |
4377 | TYPE_LENGTH (type) = 0; | |
4378 | } | |
4379 | ||
137033e9 JB |
4380 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
4381 | declared as private in the package spec, and then defined only | |
4382 | inside the package body. Such types are known as Taft Amendment | |
4383 | Types. When another package uses such a type, an incomplete DIE | |
4384 | may be generated by the compiler. */ | |
02eb380e | 4385 | if (die_is_declaration (die, cu)) |
876cecd0 | 4386 | TYPE_STUB (type) = 1; |
02eb380e | 4387 | |
f792889a | 4388 | return set_die_type (die, type, cu); |
134d01f1 DJ |
4389 | } |
4390 | ||
8176b9b8 | 4391 | /* Determine the name of the type represented by DIE, which should be |
0114d602 DJ |
4392 | a named C++ or Java compound type. Return the name in question, |
4393 | allocated on the objfile obstack. */ | |
8176b9b8 | 4394 | |
0114d602 | 4395 | static const char * |
8176b9b8 DC |
4396 | determine_class_name (struct die_info *die, struct dwarf2_cu *cu) |
4397 | { | |
0114d602 | 4398 | const char *new_prefix = NULL; |
8176b9b8 DC |
4399 | |
4400 | /* If we don't have namespace debug info, guess the name by trying | |
4401 | to demangle the names of members, just like we did in | |
72bf9492 | 4402 | guess_structure_name. */ |
8176b9b8 DC |
4403 | if (!processing_has_namespace_info) |
4404 | { | |
4405 | struct die_info *child; | |
4406 | ||
4407 | for (child = die->child; | |
4408 | child != NULL && child->tag != 0; | |
4409 | child = sibling_die (child)) | |
4410 | { | |
4411 | if (child->tag == DW_TAG_subprogram) | |
4412 | { | |
0114d602 | 4413 | char *phys_prefix |
31c27f77 JJ |
4414 | = language_class_name_from_physname (cu->language_defn, |
4415 | dwarf2_linkage_name | |
8176b9b8 DC |
4416 | (child, cu)); |
4417 | ||
0114d602 DJ |
4418 | if (phys_prefix != NULL) |
4419 | { | |
4420 | new_prefix | |
4421 | = obsavestring (phys_prefix, strlen (phys_prefix), | |
4422 | &cu->objfile->objfile_obstack); | |
4423 | xfree (phys_prefix); | |
4424 | break; | |
4425 | } | |
8176b9b8 DC |
4426 | } |
4427 | } | |
4428 | } | |
4429 | ||
4430 | if (new_prefix == NULL) | |
0114d602 | 4431 | new_prefix = dwarf2_full_name (die, cu); |
8176b9b8 DC |
4432 | |
4433 | return new_prefix; | |
4434 | } | |
4435 | ||
134d01f1 DJ |
4436 | /* Given a pointer to a die which begins an enumeration, process all |
4437 | the dies that define the members of the enumeration, and create the | |
4438 | symbol for the enumeration type. | |
4439 | ||
4440 | NOTE: We reverse the order of the element list. */ | |
4441 | ||
4442 | static void | |
4443 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4444 | { | |
4445 | struct objfile *objfile = cu->objfile; | |
4446 | struct die_info *child_die; | |
4447 | struct field *fields; | |
134d01f1 DJ |
4448 | struct symbol *sym; |
4449 | int num_fields; | |
4450 | int unsigned_enum = 1; | |
39cbfefa | 4451 | char *name; |
f792889a | 4452 | struct type *this_type; |
134d01f1 | 4453 | |
c906108c SS |
4454 | num_fields = 0; |
4455 | fields = NULL; | |
f792889a DJ |
4456 | this_type = get_die_type (die, cu); |
4457 | if (this_type == NULL) | |
4458 | this_type = read_enumeration_type (die, cu); | |
639d11d3 | 4459 | if (die->child != NULL) |
c906108c | 4460 | { |
639d11d3 | 4461 | child_die = die->child; |
c906108c SS |
4462 | while (child_die && child_die->tag) |
4463 | { | |
4464 | if (child_die->tag != DW_TAG_enumerator) | |
4465 | { | |
e7c27a73 | 4466 | process_die (child_die, cu); |
c906108c SS |
4467 | } |
4468 | else | |
4469 | { | |
39cbfefa DJ |
4470 | name = dwarf2_name (child_die, cu); |
4471 | if (name) | |
c906108c | 4472 | { |
f792889a | 4473 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
4474 | if (SYMBOL_VALUE (sym) < 0) |
4475 | unsigned_enum = 0; | |
4476 | ||
4477 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4478 | { | |
4479 | fields = (struct field *) | |
4480 | xrealloc (fields, | |
4481 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4482 | * sizeof (struct field)); |
c906108c SS |
4483 | } |
4484 | ||
3567439c | 4485 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 4486 | FIELD_TYPE (fields[num_fields]) = NULL; |
d6a843b5 | 4487 | SET_FIELD_BITPOS (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
4488 | FIELD_BITSIZE (fields[num_fields]) = 0; |
4489 | ||
4490 | num_fields++; | |
4491 | } | |
4492 | } | |
4493 | ||
4494 | child_die = sibling_die (child_die); | |
4495 | } | |
4496 | ||
4497 | if (num_fields) | |
4498 | { | |
f792889a DJ |
4499 | TYPE_NFIELDS (this_type) = num_fields; |
4500 | TYPE_FIELDS (this_type) = (struct field *) | |
4501 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
4502 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 4503 | sizeof (struct field) * num_fields); |
b8c9b27d | 4504 | xfree (fields); |
c906108c SS |
4505 | } |
4506 | if (unsigned_enum) | |
876cecd0 | 4507 | TYPE_UNSIGNED (this_type) = 1; |
c906108c | 4508 | } |
134d01f1 | 4509 | |
f792889a | 4510 | new_symbol (die, this_type, cu); |
c906108c SS |
4511 | } |
4512 | ||
4513 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
4514 | the DIE's type field. For now, this only handles one dimensional | |
4515 | arrays. */ | |
4516 | ||
f792889a | 4517 | static struct type * |
e7c27a73 | 4518 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4519 | { |
e7c27a73 | 4520 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4521 | struct die_info *child_die; |
4522 | struct type *type = NULL; | |
4523 | struct type *element_type, *range_type, *index_type; | |
4524 | struct type **range_types = NULL; | |
4525 | struct attribute *attr; | |
4526 | int ndim = 0; | |
4527 | struct cleanup *back_to; | |
39cbfefa | 4528 | char *name; |
c906108c | 4529 | |
e7c27a73 | 4530 | element_type = die_type (die, cu); |
c906108c SS |
4531 | |
4532 | /* Irix 6.2 native cc creates array types without children for | |
4533 | arrays with unspecified length. */ | |
639d11d3 | 4534 | if (die->child == NULL) |
c906108c | 4535 | { |
6ccb9162 | 4536 | index_type = builtin_type_int32; |
c906108c | 4537 | range_type = create_range_type (NULL, index_type, 0, -1); |
f792889a DJ |
4538 | type = create_array_type (NULL, element_type, range_type); |
4539 | return set_die_type (die, type, cu); | |
c906108c SS |
4540 | } |
4541 | ||
4542 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 4543 | child_die = die->child; |
c906108c SS |
4544 | while (child_die && child_die->tag) |
4545 | { | |
4546 | if (child_die->tag == DW_TAG_subrange_type) | |
4547 | { | |
f792889a DJ |
4548 | struct type *child_type = read_type_die (child_die, cu); |
4549 | if (child_type != NULL) | |
a02abb62 JB |
4550 | { |
4551 | /* The range type was succesfully read. Save it for | |
4552 | the array type creation. */ | |
4553 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
4554 | { | |
4555 | range_types = (struct type **) | |
4556 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
4557 | * sizeof (struct type *)); | |
4558 | if (ndim == 0) | |
4559 | make_cleanup (free_current_contents, &range_types); | |
4560 | } | |
f792889a | 4561 | range_types[ndim++] = child_type; |
a02abb62 | 4562 | } |
c906108c SS |
4563 | } |
4564 | child_die = sibling_die (child_die); | |
4565 | } | |
4566 | ||
4567 | /* Dwarf2 dimensions are output from left to right, create the | |
4568 | necessary array types in backwards order. */ | |
7ca2d3a3 | 4569 | |
c906108c | 4570 | type = element_type; |
7ca2d3a3 DL |
4571 | |
4572 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
4573 | { | |
4574 | int i = 0; | |
4575 | while (i < ndim) | |
4576 | type = create_array_type (NULL, type, range_types[i++]); | |
4577 | } | |
4578 | else | |
4579 | { | |
4580 | while (ndim-- > 0) | |
4581 | type = create_array_type (NULL, type, range_types[ndim]); | |
4582 | } | |
c906108c | 4583 | |
f5f8a009 EZ |
4584 | /* Understand Dwarf2 support for vector types (like they occur on |
4585 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
4586 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
4587 | custom vendor extension. The main difference between a regular | |
4588 | array and the vector variant is that vectors are passed by value | |
4589 | to functions. */ | |
e142c38c | 4590 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 4591 | if (attr) |
ea37ba09 | 4592 | make_vector_type (type); |
f5f8a009 | 4593 | |
39cbfefa DJ |
4594 | name = dwarf2_name (die, cu); |
4595 | if (name) | |
4596 | TYPE_NAME (type) = name; | |
714e295e | 4597 | |
c906108c SS |
4598 | do_cleanups (back_to); |
4599 | ||
4600 | /* Install the type in the die. */ | |
f792889a | 4601 | return set_die_type (die, type, cu); |
c906108c SS |
4602 | } |
4603 | ||
7ca2d3a3 DL |
4604 | static enum dwarf_array_dim_ordering |
4605 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
4606 | { | |
4607 | struct attribute *attr; | |
4608 | ||
4609 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
4610 | ||
4611 | if (attr) return DW_SND (attr); | |
4612 | ||
4613 | /* | |
4614 | GNU F77 is a special case, as at 08/2004 array type info is the | |
4615 | opposite order to the dwarf2 specification, but data is still | |
4616 | laid out as per normal fortran. | |
4617 | ||
4618 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
4619 | version checking. | |
4620 | */ | |
4621 | ||
4622 | if (cu->language == language_fortran && | |
4623 | cu->producer && strstr (cu->producer, "GNU F77")) | |
4624 | { | |
4625 | return DW_ORD_row_major; | |
4626 | } | |
4627 | ||
4628 | switch (cu->language_defn->la_array_ordering) | |
4629 | { | |
4630 | case array_column_major: | |
4631 | return DW_ORD_col_major; | |
4632 | case array_row_major: | |
4633 | default: | |
4634 | return DW_ORD_row_major; | |
4635 | }; | |
4636 | } | |
4637 | ||
72019c9c GM |
4638 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
4639 | the DIE's type field. */ | |
4640 | ||
f792889a | 4641 | static struct type * |
72019c9c GM |
4642 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
4643 | { | |
f792889a DJ |
4644 | struct type *set_type = create_set_type (NULL, die_type (die, cu)); |
4645 | ||
4646 | return set_die_type (die, set_type, cu); | |
72019c9c | 4647 | } |
7ca2d3a3 | 4648 | |
c906108c SS |
4649 | /* First cut: install each common block member as a global variable. */ |
4650 | ||
4651 | static void | |
e7c27a73 | 4652 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4653 | { |
4654 | struct die_info *child_die; | |
4655 | struct attribute *attr; | |
4656 | struct symbol *sym; | |
4657 | CORE_ADDR base = (CORE_ADDR) 0; | |
4658 | ||
e142c38c | 4659 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
4660 | if (attr) |
4661 | { | |
8e19ed76 PS |
4662 | /* Support the .debug_loc offsets */ |
4663 | if (attr_form_is_block (attr)) | |
4664 | { | |
e7c27a73 | 4665 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 4666 | } |
3690dd37 | 4667 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 4668 | { |
4d3c2250 | 4669 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4670 | } |
4671 | else | |
4672 | { | |
4d3c2250 KB |
4673 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4674 | "common block member"); | |
8e19ed76 | 4675 | } |
c906108c | 4676 | } |
639d11d3 | 4677 | if (die->child != NULL) |
c906108c | 4678 | { |
639d11d3 | 4679 | child_die = die->child; |
c906108c SS |
4680 | while (child_die && child_die->tag) |
4681 | { | |
e7c27a73 | 4682 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 4683 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
4684 | if (attr) |
4685 | { | |
4686 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 4687 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
4688 | add_symbol_to_list (sym, &global_symbols); |
4689 | } | |
4690 | child_die = sibling_die (child_die); | |
4691 | } | |
4692 | } | |
4693 | } | |
4694 | ||
0114d602 | 4695 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 4696 | |
0114d602 DJ |
4697 | static struct type * |
4698 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 4699 | { |
e7c27a73 | 4700 | struct objfile *objfile = cu->objfile; |
0114d602 | 4701 | const char *previous_prefix, *name; |
9219021c | 4702 | int is_anonymous; |
0114d602 DJ |
4703 | struct type *type; |
4704 | ||
4705 | /* For extensions, reuse the type of the original namespace. */ | |
4706 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
4707 | { | |
4708 | struct die_info *ext_die; | |
4709 | struct dwarf2_cu *ext_cu = cu; | |
4710 | ext_die = dwarf2_extension (die, &ext_cu); | |
4711 | type = read_type_die (ext_die, ext_cu); | |
4712 | return set_die_type (die, type, cu); | |
4713 | } | |
9219021c | 4714 | |
e142c38c | 4715 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
4716 | |
4717 | /* Now build the name of the current namespace. */ | |
4718 | ||
0114d602 DJ |
4719 | previous_prefix = determine_prefix (die, cu); |
4720 | if (previous_prefix[0] != '\0') | |
4721 | name = typename_concat (&objfile->objfile_obstack, | |
4722 | previous_prefix, name, cu); | |
4723 | ||
4724 | /* Create the type. */ | |
4725 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, NULL, | |
4726 | objfile); | |
4727 | TYPE_NAME (type) = (char *) name; | |
4728 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
4729 | ||
4730 | set_die_type (die, type, cu); | |
4731 | ||
4732 | return type; | |
4733 | } | |
4734 | ||
4735 | /* Read a C++ namespace. */ | |
4736 | ||
4737 | static void | |
4738 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
4739 | { | |
4740 | struct objfile *objfile = cu->objfile; | |
4741 | const char *name; | |
4742 | int is_anonymous; | |
9219021c | 4743 | |
5c4e30ca DC |
4744 | /* Add a symbol associated to this if we haven't seen the namespace |
4745 | before. Also, add a using directive if it's an anonymous | |
4746 | namespace. */ | |
9219021c | 4747 | |
f2f0e013 | 4748 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
4749 | { |
4750 | struct type *type; | |
4751 | ||
0114d602 | 4752 | type = read_type_die (die, cu); |
e7c27a73 | 4753 | new_symbol (die, type, cu); |
5c4e30ca | 4754 | |
0114d602 | 4755 | name = namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 4756 | if (is_anonymous) |
0114d602 DJ |
4757 | { |
4758 | const char *previous_prefix = determine_prefix (die, cu); | |
4759 | cp_add_using_directive (TYPE_NAME (type), | |
4760 | strlen (previous_prefix), | |
4761 | strlen (TYPE_NAME (type))); | |
4762 | } | |
5c4e30ca | 4763 | } |
9219021c | 4764 | |
639d11d3 | 4765 | if (die->child != NULL) |
d9fa45fe | 4766 | { |
639d11d3 | 4767 | struct die_info *child_die = die->child; |
d9fa45fe DC |
4768 | |
4769 | while (child_die && child_die->tag) | |
4770 | { | |
e7c27a73 | 4771 | process_die (child_die, cu); |
d9fa45fe DC |
4772 | child_die = sibling_die (child_die); |
4773 | } | |
4774 | } | |
38d518c9 EZ |
4775 | } |
4776 | ||
5d7cb8df JK |
4777 | /* Read a Fortran module. */ |
4778 | ||
4779 | static void | |
4780 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
4781 | { | |
4782 | struct die_info *child_die = die->child; | |
4783 | ||
4784 | /* FIXME: Support the separate Fortran module namespaces. */ | |
4785 | ||
4786 | while (child_die && child_die->tag) | |
4787 | { | |
4788 | process_die (child_die, cu); | |
4789 | child_die = sibling_die (child_die); | |
4790 | } | |
4791 | } | |
4792 | ||
38d518c9 EZ |
4793 | /* Return the name of the namespace represented by DIE. Set |
4794 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
4795 | namespace. */ | |
4796 | ||
4797 | static const char * | |
e142c38c | 4798 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
4799 | { |
4800 | struct die_info *current_die; | |
4801 | const char *name = NULL; | |
4802 | ||
4803 | /* Loop through the extensions until we find a name. */ | |
4804 | ||
4805 | for (current_die = die; | |
4806 | current_die != NULL; | |
f2f0e013 | 4807 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 4808 | { |
e142c38c | 4809 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
4810 | if (name != NULL) |
4811 | break; | |
4812 | } | |
4813 | ||
4814 | /* Is it an anonymous namespace? */ | |
4815 | ||
4816 | *is_anonymous = (name == NULL); | |
4817 | if (*is_anonymous) | |
4818 | name = "(anonymous namespace)"; | |
4819 | ||
4820 | return name; | |
d9fa45fe DC |
4821 | } |
4822 | ||
c906108c SS |
4823 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
4824 | the user defined type vector. */ | |
4825 | ||
f792889a | 4826 | static struct type * |
e7c27a73 | 4827 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4828 | { |
5e2b427d | 4829 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
e7c27a73 | 4830 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 4831 | struct type *type; |
8b2dbe47 KB |
4832 | struct attribute *attr_byte_size; |
4833 | struct attribute *attr_address_class; | |
4834 | int byte_size, addr_class; | |
c906108c | 4835 | |
e7c27a73 | 4836 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 4837 | |
e142c38c | 4838 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
4839 | if (attr_byte_size) |
4840 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 4841 | else |
8b2dbe47 KB |
4842 | byte_size = cu_header->addr_size; |
4843 | ||
e142c38c | 4844 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
4845 | if (attr_address_class) |
4846 | addr_class = DW_UNSND (attr_address_class); | |
4847 | else | |
4848 | addr_class = DW_ADDR_none; | |
4849 | ||
4850 | /* If the pointer size or address class is different than the | |
4851 | default, create a type variant marked as such and set the | |
4852 | length accordingly. */ | |
4853 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 4854 | { |
5e2b427d | 4855 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
4856 | { |
4857 | int type_flags; | |
4858 | ||
849957d9 | 4859 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 4860 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
4861 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
4862 | == 0); | |
8b2dbe47 KB |
4863 | type = make_type_with_address_space (type, type_flags); |
4864 | } | |
4865 | else if (TYPE_LENGTH (type) != byte_size) | |
4866 | { | |
e2e0b3e5 | 4867 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 KB |
4868 | } |
4869 | else { | |
4870 | /* Should we also complain about unhandled address classes? */ | |
4871 | } | |
c906108c | 4872 | } |
8b2dbe47 KB |
4873 | |
4874 | TYPE_LENGTH (type) = byte_size; | |
f792889a | 4875 | return set_die_type (die, type, cu); |
c906108c SS |
4876 | } |
4877 | ||
4878 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
4879 | the user defined type vector. */ | |
4880 | ||
f792889a | 4881 | static struct type * |
e7c27a73 | 4882 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4883 | { |
e7c27a73 | 4884 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4885 | struct type *type; |
4886 | struct type *to_type; | |
4887 | struct type *domain; | |
4888 | ||
e7c27a73 DJ |
4889 | to_type = die_type (die, cu); |
4890 | domain = die_containing_type (die, cu); | |
0d5de010 DJ |
4891 | |
4892 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) | |
4893 | type = lookup_methodptr_type (to_type); | |
4894 | else | |
4895 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 4896 | |
f792889a | 4897 | return set_die_type (die, type, cu); |
c906108c SS |
4898 | } |
4899 | ||
4900 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
4901 | the user defined type vector. */ | |
4902 | ||
f792889a | 4903 | static struct type * |
e7c27a73 | 4904 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4905 | { |
e7c27a73 | 4906 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4907 | struct type *type; |
4908 | struct attribute *attr; | |
4909 | ||
e7c27a73 | 4910 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 4911 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4912 | if (attr) |
4913 | { | |
4914 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4915 | } | |
4916 | else | |
4917 | { | |
107d2387 | 4918 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 4919 | } |
f792889a | 4920 | return set_die_type (die, type, cu); |
c906108c SS |
4921 | } |
4922 | ||
f792889a | 4923 | static struct type * |
e7c27a73 | 4924 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4925 | { |
f792889a | 4926 | struct type *base_type, *cv_type; |
c906108c | 4927 | |
e7c27a73 | 4928 | base_type = die_type (die, cu); |
f792889a DJ |
4929 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
4930 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
4931 | } |
4932 | ||
f792889a | 4933 | static struct type * |
e7c27a73 | 4934 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4935 | { |
f792889a | 4936 | struct type *base_type, *cv_type; |
c906108c | 4937 | |
e7c27a73 | 4938 | base_type = die_type (die, cu); |
f792889a DJ |
4939 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
4940 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
4941 | } |
4942 | ||
4943 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
4944 | the user defined type vector. It isn't really a user defined type, | |
4945 | but it behaves like one, with other DIE's using an AT_user_def_type | |
4946 | attribute to reference it. */ | |
4947 | ||
f792889a | 4948 | static struct type * |
e7c27a73 | 4949 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4950 | { |
e7c27a73 | 4951 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4952 | struct type *type, *range_type, *index_type, *char_type; |
4953 | struct attribute *attr; | |
4954 | unsigned int length; | |
4955 | ||
e142c38c | 4956 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
4957 | if (attr) |
4958 | { | |
4959 | length = DW_UNSND (attr); | |
4960 | } | |
4961 | else | |
4962 | { | |
b21b22e0 | 4963 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 4964 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
4965 | if (attr) |
4966 | { | |
4967 | length = DW_UNSND (attr); | |
4968 | } | |
4969 | else | |
4970 | { | |
4971 | length = 1; | |
4972 | } | |
c906108c | 4973 | } |
6ccb9162 UW |
4974 | |
4975 | index_type = builtin_type_int32; | |
c906108c | 4976 | range_type = create_range_type (NULL, index_type, 1, length); |
6ccb9162 UW |
4977 | type = create_string_type (NULL, range_type); |
4978 | ||
f792889a | 4979 | return set_die_type (die, type, cu); |
c906108c SS |
4980 | } |
4981 | ||
4982 | /* Handle DIES due to C code like: | |
4983 | ||
4984 | struct foo | |
c5aa993b JM |
4985 | { |
4986 | int (*funcp)(int a, long l); | |
4987 | int b; | |
4988 | }; | |
c906108c SS |
4989 | |
4990 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 4991 | */ |
c906108c | 4992 | |
f792889a | 4993 | static struct type * |
e7c27a73 | 4994 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4995 | { |
4996 | struct type *type; /* Type that this function returns */ | |
4997 | struct type *ftype; /* Function that returns above type */ | |
4998 | struct attribute *attr; | |
4999 | ||
e7c27a73 | 5000 | type = die_type (die, cu); |
1326e61b | 5001 | ftype = make_function_type (type, (struct type **) 0); |
c906108c | 5002 | |
5b8101ae | 5003 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 5004 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 5005 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 5006 | || cu->language == language_cplus |
5b8101ae PM |
5007 | || cu->language == language_java |
5008 | || cu->language == language_pascal) | |
876cecd0 | 5009 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 5010 | |
c055b101 CV |
5011 | /* Store the calling convention in the type if it's available in |
5012 | the subroutine die. Otherwise set the calling convention to | |
5013 | the default value DW_CC_normal. */ | |
5014 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
5015 | TYPE_CALLING_CONVENTION (ftype) = attr ? DW_UNSND (attr) : DW_CC_normal; | |
5016 | ||
639d11d3 | 5017 | if (die->child != NULL) |
c906108c SS |
5018 | { |
5019 | struct die_info *child_die; | |
5020 | int nparams = 0; | |
5021 | int iparams = 0; | |
5022 | ||
5023 | /* Count the number of parameters. | |
5024 | FIXME: GDB currently ignores vararg functions, but knows about | |
5025 | vararg member functions. */ | |
639d11d3 | 5026 | child_die = die->child; |
c906108c SS |
5027 | while (child_die && child_die->tag) |
5028 | { | |
5029 | if (child_die->tag == DW_TAG_formal_parameter) | |
5030 | nparams++; | |
5031 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 5032 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
5033 | child_die = sibling_die (child_die); |
5034 | } | |
5035 | ||
5036 | /* Allocate storage for parameters and fill them in. */ | |
5037 | TYPE_NFIELDS (ftype) = nparams; | |
5038 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 5039 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 5040 | |
639d11d3 | 5041 | child_die = die->child; |
c906108c SS |
5042 | while (child_die && child_die->tag) |
5043 | { | |
5044 | if (child_die->tag == DW_TAG_formal_parameter) | |
5045 | { | |
5046 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
5047 | member functions. G++ helps GDB by marking the first |
5048 | parameter for non-static member functions (which is the | |
5049 | this pointer) as artificial. We pass this information | |
5050 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 5051 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
5052 | if (attr) |
5053 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
5054 | else | |
5055 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 5056 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
5057 | iparams++; |
5058 | } | |
5059 | child_die = sibling_die (child_die); | |
5060 | } | |
5061 | } | |
5062 | ||
f792889a | 5063 | return set_die_type (die, ftype, cu); |
c906108c SS |
5064 | } |
5065 | ||
f792889a | 5066 | static struct type * |
e7c27a73 | 5067 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5068 | { |
e7c27a73 | 5069 | struct objfile *objfile = cu->objfile; |
2f038fcb | 5070 | struct attribute *attr; |
0114d602 | 5071 | const char *name = NULL; |
f792889a | 5072 | struct type *this_type; |
c906108c | 5073 | |
0114d602 | 5074 | name = dwarf2_full_name (die, cu); |
f792889a | 5075 | this_type = init_type (TYPE_CODE_TYPEDEF, 0, |
0114d602 DJ |
5076 | TYPE_FLAG_TARGET_STUB, NULL, objfile); |
5077 | TYPE_NAME (this_type) = (char *) name; | |
f792889a DJ |
5078 | set_die_type (die, this_type, cu); |
5079 | TYPE_TARGET_TYPE (this_type) = die_type (die, cu); | |
5080 | return this_type; | |
c906108c SS |
5081 | } |
5082 | ||
5083 | /* Find a representation of a given base type and install | |
5084 | it in the TYPE field of the die. */ | |
5085 | ||
f792889a | 5086 | static struct type * |
e7c27a73 | 5087 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 5088 | { |
e7c27a73 | 5089 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5090 | struct type *type; |
5091 | struct attribute *attr; | |
5092 | int encoding = 0, size = 0; | |
39cbfefa | 5093 | char *name; |
6ccb9162 UW |
5094 | enum type_code code = TYPE_CODE_INT; |
5095 | int type_flags = 0; | |
5096 | struct type *target_type = NULL; | |
c906108c | 5097 | |
e142c38c | 5098 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
5099 | if (attr) |
5100 | { | |
5101 | encoding = DW_UNSND (attr); | |
5102 | } | |
e142c38c | 5103 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
5104 | if (attr) |
5105 | { | |
5106 | size = DW_UNSND (attr); | |
5107 | } | |
39cbfefa | 5108 | name = dwarf2_name (die, cu); |
6ccb9162 | 5109 | if (!name) |
c906108c | 5110 | { |
6ccb9162 UW |
5111 | complaint (&symfile_complaints, |
5112 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 5113 | } |
6ccb9162 UW |
5114 | |
5115 | switch (encoding) | |
c906108c | 5116 | { |
6ccb9162 UW |
5117 | case DW_ATE_address: |
5118 | /* Turn DW_ATE_address into a void * pointer. */ | |
5119 | code = TYPE_CODE_PTR; | |
5120 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5121 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
5122 | break; | |
5123 | case DW_ATE_boolean: | |
5124 | code = TYPE_CODE_BOOL; | |
5125 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5126 | break; | |
5127 | case DW_ATE_complex_float: | |
5128 | code = TYPE_CODE_COMPLEX; | |
5129 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
5130 | break; | |
5131 | case DW_ATE_decimal_float: | |
5132 | code = TYPE_CODE_DECFLOAT; | |
5133 | break; | |
5134 | case DW_ATE_float: | |
5135 | code = TYPE_CODE_FLT; | |
5136 | break; | |
5137 | case DW_ATE_signed: | |
5138 | break; | |
5139 | case DW_ATE_unsigned: | |
5140 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5141 | break; | |
5142 | case DW_ATE_signed_char: | |
868a0084 PM |
5143 | if (cu->language == language_ada || cu->language == language_m2 |
5144 | || cu->language == language_pascal) | |
6ccb9162 UW |
5145 | code = TYPE_CODE_CHAR; |
5146 | break; | |
5147 | case DW_ATE_unsigned_char: | |
868a0084 PM |
5148 | if (cu->language == language_ada || cu->language == language_m2 |
5149 | || cu->language == language_pascal) | |
6ccb9162 UW |
5150 | code = TYPE_CODE_CHAR; |
5151 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5152 | break; | |
5153 | default: | |
5154 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
5155 | dwarf_type_encoding_name (encoding)); | |
5156 | break; | |
c906108c | 5157 | } |
6ccb9162 | 5158 | |
0114d602 DJ |
5159 | type = init_type (code, size, type_flags, NULL, objfile); |
5160 | TYPE_NAME (type) = name; | |
6ccb9162 UW |
5161 | TYPE_TARGET_TYPE (type) = target_type; |
5162 | ||
0114d602 | 5163 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 5164 | TYPE_NOSIGN (type) = 1; |
0114d602 | 5165 | |
f792889a | 5166 | return set_die_type (die, type, cu); |
c906108c SS |
5167 | } |
5168 | ||
a02abb62 JB |
5169 | /* Read the given DW_AT_subrange DIE. */ |
5170 | ||
f792889a | 5171 | static struct type * |
a02abb62 JB |
5172 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
5173 | { | |
5e2b427d | 5174 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
a02abb62 JB |
5175 | struct type *base_type; |
5176 | struct type *range_type; | |
5177 | struct attribute *attr; | |
5178 | int low = 0; | |
5179 | int high = -1; | |
39cbfefa | 5180 | char *name; |
a02abb62 | 5181 | |
a02abb62 | 5182 | base_type = die_type (die, cu); |
3d1f72c2 | 5183 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
a02abb62 JB |
5184 | { |
5185 | complaint (&symfile_complaints, | |
e2e0b3e5 | 5186 | _("DW_AT_type missing from DW_TAG_subrange_type")); |
17a912b6 | 5187 | base_type |
5e2b427d | 5188 | = init_type (TYPE_CODE_INT, gdbarch_addr_bit (gdbarch) / 8, |
6ccb9162 | 5189 | 0, NULL, cu->objfile); |
a02abb62 JB |
5190 | } |
5191 | ||
e142c38c | 5192 | if (cu->language == language_fortran) |
a02abb62 JB |
5193 | { |
5194 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
5195 | low = 1; | |
5196 | } | |
5197 | ||
dd5e6932 DJ |
5198 | /* FIXME: For variable sized arrays either of these could be |
5199 | a variable rather than a constant value. We'll allow it, | |
5200 | but we don't know how to handle it. */ | |
e142c38c | 5201 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
5202 | if (attr) |
5203 | low = dwarf2_get_attr_constant_value (attr, 0); | |
5204 | ||
e142c38c | 5205 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
5206 | if (attr) |
5207 | { | |
5208 | if (attr->form == DW_FORM_block1) | |
5209 | { | |
5210 | /* GCC encodes arrays with unspecified or dynamic length | |
5211 | with a DW_FORM_block1 attribute. | |
5212 | FIXME: GDB does not yet know how to handle dynamic | |
5213 | arrays properly, treat them as arrays with unspecified | |
5214 | length for now. | |
5215 | ||
5216 | FIXME: jimb/2003-09-22: GDB does not really know | |
5217 | how to handle arrays of unspecified length | |
5218 | either; we just represent them as zero-length | |
5219 | arrays. Choose an appropriate upper bound given | |
5220 | the lower bound we've computed above. */ | |
5221 | high = low - 1; | |
5222 | } | |
5223 | else | |
5224 | high = dwarf2_get_attr_constant_value (attr, 1); | |
5225 | } | |
5226 | ||
5227 | range_type = create_range_type (NULL, base_type, low, high); | |
5228 | ||
39cbfefa DJ |
5229 | name = dwarf2_name (die, cu); |
5230 | if (name) | |
5231 | TYPE_NAME (range_type) = name; | |
a02abb62 | 5232 | |
e142c38c | 5233 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
5234 | if (attr) |
5235 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
5236 | ||
f792889a | 5237 | return set_die_type (die, range_type, cu); |
a02abb62 JB |
5238 | } |
5239 | ||
f792889a | 5240 | static struct type * |
81a17f79 JB |
5241 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
5242 | { | |
5243 | struct type *type; | |
81a17f79 | 5244 | |
81a17f79 JB |
5245 | /* For now, we only support the C meaning of an unspecified type: void. */ |
5246 | ||
0114d602 DJ |
5247 | type = init_type (TYPE_CODE_VOID, 0, 0, NULL, cu->objfile); |
5248 | TYPE_NAME (type) = dwarf2_name (die, cu); | |
81a17f79 | 5249 | |
f792889a | 5250 | return set_die_type (die, type, cu); |
81a17f79 | 5251 | } |
a02abb62 | 5252 | |
51545339 DJ |
5253 | /* Trivial hash function for die_info: the hash value of a DIE |
5254 | is its offset in .debug_info for this objfile. */ | |
5255 | ||
5256 | static hashval_t | |
5257 | die_hash (const void *item) | |
5258 | { | |
5259 | const struct die_info *die = item; | |
5260 | return die->offset; | |
5261 | } | |
5262 | ||
5263 | /* Trivial comparison function for die_info structures: two DIEs | |
5264 | are equal if they have the same offset. */ | |
5265 | ||
5266 | static int | |
5267 | die_eq (const void *item_lhs, const void *item_rhs) | |
5268 | { | |
5269 | const struct die_info *die_lhs = item_lhs; | |
5270 | const struct die_info *die_rhs = item_rhs; | |
5271 | return die_lhs->offset == die_rhs->offset; | |
5272 | } | |
5273 | ||
c906108c SS |
5274 | /* Read a whole compilation unit into a linked list of dies. */ |
5275 | ||
f9aca02d | 5276 | static struct die_info * |
fe1b8b76 | 5277 | read_comp_unit (gdb_byte *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5278 | { |
51545339 DJ |
5279 | cu->die_hash |
5280 | = htab_create_alloc_ex (cu->header.length / 12, | |
5281 | die_hash, | |
5282 | die_eq, | |
5283 | NULL, | |
5284 | &cu->comp_unit_obstack, | |
5285 | hashtab_obstack_allocate, | |
5286 | dummy_obstack_deallocate); | |
5287 | ||
e7c27a73 | 5288 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
5289 | } |
5290 | ||
d97bc12b DE |
5291 | /* Main entry point for reading a DIE and all children. |
5292 | Read the DIE and dump it if requested. */ | |
5293 | ||
5294 | static struct die_info * | |
5295 | read_die_and_children (gdb_byte *info_ptr, bfd *abfd, | |
5296 | struct dwarf2_cu *cu, | |
5297 | gdb_byte **new_info_ptr, | |
5298 | struct die_info *parent) | |
5299 | { | |
5300 | struct die_info *result = read_die_and_children_1 (info_ptr, abfd, cu, | |
5301 | new_info_ptr, parent); | |
5302 | ||
5303 | if (dwarf2_die_debug) | |
5304 | { | |
5305 | fprintf_unfiltered (gdb_stdlog, "Read die from .debug_info:\n"); | |
5306 | dump_die (result, dwarf2_die_debug); | |
5307 | } | |
5308 | ||
5309 | return result; | |
5310 | } | |
5311 | ||
639d11d3 DC |
5312 | /* Read a single die and all its descendents. Set the die's sibling |
5313 | field to NULL; set other fields in the die correctly, and set all | |
5314 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
5315 | location of the info_ptr after reading all of those dies. PARENT | |
5316 | is the parent of the die in question. */ | |
5317 | ||
5318 | static struct die_info * | |
d97bc12b DE |
5319 | read_die_and_children_1 (gdb_byte *info_ptr, bfd *abfd, |
5320 | struct dwarf2_cu *cu, | |
5321 | gdb_byte **new_info_ptr, | |
5322 | struct die_info *parent) | |
639d11d3 DC |
5323 | { |
5324 | struct die_info *die; | |
fe1b8b76 | 5325 | gdb_byte *cur_ptr; |
639d11d3 DC |
5326 | int has_children; |
5327 | ||
e7c27a73 | 5328 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
1d325ec1 DJ |
5329 | if (die == NULL) |
5330 | { | |
5331 | *new_info_ptr = cur_ptr; | |
5332 | return NULL; | |
5333 | } | |
51545339 | 5334 | store_in_ref_table (die, cu); |
639d11d3 DC |
5335 | |
5336 | if (has_children) | |
5337 | { | |
e7c27a73 | 5338 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
5339 | new_info_ptr, die); |
5340 | } | |
5341 | else | |
5342 | { | |
5343 | die->child = NULL; | |
5344 | *new_info_ptr = cur_ptr; | |
5345 | } | |
5346 | ||
5347 | die->sibling = NULL; | |
5348 | die->parent = parent; | |
5349 | return die; | |
5350 | } | |
5351 | ||
5352 | /* Read a die, all of its descendents, and all of its siblings; set | |
5353 | all of the fields of all of the dies correctly. Arguments are as | |
5354 | in read_die_and_children. */ | |
5355 | ||
5356 | static struct die_info * | |
fe1b8b76 | 5357 | read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 5358 | struct dwarf2_cu *cu, |
fe1b8b76 | 5359 | gdb_byte **new_info_ptr, |
639d11d3 DC |
5360 | struct die_info *parent) |
5361 | { | |
5362 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 5363 | gdb_byte *cur_ptr; |
639d11d3 | 5364 | |
c906108c | 5365 | cur_ptr = info_ptr; |
639d11d3 DC |
5366 | first_die = last_sibling = NULL; |
5367 | ||
5368 | while (1) | |
c906108c | 5369 | { |
639d11d3 | 5370 | struct die_info *die |
d97bc12b | 5371 | = read_die_and_children_1 (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 | 5372 | |
1d325ec1 | 5373 | if (die == NULL) |
c906108c | 5374 | { |
639d11d3 DC |
5375 | *new_info_ptr = cur_ptr; |
5376 | return first_die; | |
c906108c | 5377 | } |
1d325ec1 DJ |
5378 | |
5379 | if (!first_die) | |
5380 | first_die = die; | |
c906108c | 5381 | else |
1d325ec1 DJ |
5382 | last_sibling->sibling = die; |
5383 | ||
5384 | last_sibling = die; | |
c906108c | 5385 | } |
c906108c SS |
5386 | } |
5387 | ||
233a11ab CS |
5388 | /* Decompress a section that was compressed using zlib. Store the |
5389 | decompressed buffer, and its size, in OUTBUF and OUTSIZE. */ | |
5390 | ||
5391 | static void | |
5392 | zlib_decompress_section (struct objfile *objfile, asection *sectp, | |
5393 | gdb_byte **outbuf, bfd_size_type *outsize) | |
5394 | { | |
ef72380d | 5395 | bfd *abfd = objfile->obfd; |
233a11ab CS |
5396 | #ifndef HAVE_ZLIB_H |
5397 | error (_("Support for zlib-compressed DWARF data (from '%s') " | |
5398 | "is disabled in this copy of GDB"), | |
5399 | bfd_get_filename (abfd)); | |
5400 | #else | |
233a11ab CS |
5401 | bfd_size_type compressed_size = bfd_get_section_size (sectp); |
5402 | gdb_byte *compressed_buffer = xmalloc (compressed_size); | |
5403 | bfd_size_type uncompressed_size; | |
5404 | gdb_byte *uncompressed_buffer; | |
5405 | z_stream strm; | |
5406 | int rc; | |
5407 | int header_size = 12; | |
5408 | ||
5409 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 | |
5410 | || bfd_bread (compressed_buffer, compressed_size, abfd) != compressed_size) | |
5411 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), | |
5412 | bfd_get_filename (abfd)); | |
5413 | ||
5414 | /* Read the zlib header. In this case, it should be "ZLIB" followed | |
5415 | by the uncompressed section size, 8 bytes in big-endian order. */ | |
5416 | if (compressed_size < header_size | |
5417 | || strncmp (compressed_buffer, "ZLIB", 4) != 0) | |
5418 | error (_("Dwarf Error: Corrupt DWARF ZLIB header from '%s'"), | |
5419 | bfd_get_filename (abfd)); | |
5420 | uncompressed_size = compressed_buffer[4]; uncompressed_size <<= 8; | |
5421 | uncompressed_size += compressed_buffer[5]; uncompressed_size <<= 8; | |
5422 | uncompressed_size += compressed_buffer[6]; uncompressed_size <<= 8; | |
5423 | uncompressed_size += compressed_buffer[7]; uncompressed_size <<= 8; | |
5424 | uncompressed_size += compressed_buffer[8]; uncompressed_size <<= 8; | |
5425 | uncompressed_size += compressed_buffer[9]; uncompressed_size <<= 8; | |
5426 | uncompressed_size += compressed_buffer[10]; uncompressed_size <<= 8; | |
5427 | uncompressed_size += compressed_buffer[11]; | |
5428 | ||
5429 | /* It is possible the section consists of several compressed | |
5430 | buffers concatenated together, so we uncompress in a loop. */ | |
5431 | strm.zalloc = NULL; | |
5432 | strm.zfree = NULL; | |
5433 | strm.opaque = NULL; | |
5434 | strm.avail_in = compressed_size - header_size; | |
5435 | strm.next_in = (Bytef*) compressed_buffer + header_size; | |
5436 | strm.avail_out = uncompressed_size; | |
5437 | uncompressed_buffer = obstack_alloc (&objfile->objfile_obstack, | |
5438 | uncompressed_size); | |
5439 | rc = inflateInit (&strm); | |
5440 | while (strm.avail_in > 0) | |
5441 | { | |
5442 | if (rc != Z_OK) | |
5443 | error (_("Dwarf Error: setting up DWARF uncompression in '%s': %d"), | |
5444 | bfd_get_filename (abfd), rc); | |
5445 | strm.next_out = ((Bytef*) uncompressed_buffer | |
5446 | + (uncompressed_size - strm.avail_out)); | |
5447 | rc = inflate (&strm, Z_FINISH); | |
5448 | if (rc != Z_STREAM_END) | |
5449 | error (_("Dwarf Error: zlib error uncompressing from '%s': %d"), | |
5450 | bfd_get_filename (abfd), rc); | |
5451 | rc = inflateReset (&strm); | |
5452 | } | |
5453 | rc = inflateEnd (&strm); | |
5454 | if (rc != Z_OK | |
5455 | || strm.avail_out != 0) | |
5456 | error (_("Dwarf Error: concluding DWARF uncompression in '%s': %d"), | |
5457 | bfd_get_filename (abfd), rc); | |
5458 | ||
5459 | xfree (compressed_buffer); | |
5460 | *outbuf = uncompressed_buffer; | |
5461 | *outsize = uncompressed_size; | |
5462 | #endif | |
5463 | } | |
5464 | ||
5465 | ||
c906108c | 5466 | /* Read the contents of the section at OFFSET and of size SIZE from the |
233a11ab CS |
5467 | object file specified by OBJFILE into the objfile_obstack and return it. |
5468 | If the section is compressed, uncompress it before returning. */ | |
c906108c | 5469 | |
fe1b8b76 | 5470 | gdb_byte * |
188dd5d6 | 5471 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
5472 | { |
5473 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 5474 | gdb_byte *buf, *retbuf; |
2c500098 | 5475 | bfd_size_type size = bfd_get_section_size (sectp); |
233a11ab | 5476 | unsigned char header[4]; |
c906108c SS |
5477 | |
5478 | if (size == 0) | |
5479 | return NULL; | |
5480 | ||
233a11ab CS |
5481 | /* Check if the file has a 4-byte header indicating compression. */ |
5482 | if (size > sizeof (header) | |
5483 | && bfd_seek (abfd, sectp->filepos, SEEK_SET) == 0 | |
5484 | && bfd_bread (header, sizeof (header), abfd) == sizeof (header)) | |
5485 | { | |
5486 | /* Upon decompression, update the buffer and its size. */ | |
5487 | if (strncmp (header, "ZLIB", sizeof (header)) == 0) | |
5488 | { | |
5489 | zlib_decompress_section (objfile, sectp, &buf, &size); | |
5490 | dwarf2_resize_section (sectp, size); | |
5491 | return buf; | |
5492 | } | |
5493 | } | |
5494 | ||
5495 | /* If we get here, we are a normal, not-compressed section. */ | |
fe1b8b76 | 5496 | buf = obstack_alloc (&objfile->objfile_obstack, size); |
233a11ab CS |
5497 | /* When debugging .o files, we may need to apply relocations; see |
5498 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
5499 | We never compress sections in .o files, so we only need to | |
5500 | try this when the section is not compressed. */ | |
fe1b8b76 | 5501 | retbuf = symfile_relocate_debug_section (abfd, sectp, buf); |
086df311 DJ |
5502 | if (retbuf != NULL) |
5503 | return retbuf; | |
5504 | ||
188dd5d6 DJ |
5505 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
5506 | || bfd_bread (buf, size, abfd) != size) | |
8a3fe4f8 | 5507 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
188dd5d6 DJ |
5508 | bfd_get_filename (abfd)); |
5509 | ||
c906108c SS |
5510 | return buf; |
5511 | } | |
5512 | ||
5513 | /* In DWARF version 2, the description of the debugging information is | |
5514 | stored in a separate .debug_abbrev section. Before we read any | |
5515 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
5516 | in a hash table. This function also sets flags in CU describing |
5517 | the data found in the abbrev table. */ | |
c906108c SS |
5518 | |
5519 | static void | |
e7c27a73 | 5520 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5521 | { |
e7c27a73 | 5522 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 5523 | gdb_byte *abbrev_ptr; |
c906108c SS |
5524 | struct abbrev_info *cur_abbrev; |
5525 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
5526 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
5527 | struct attr_abbrev *cur_attrs; |
5528 | unsigned int allocated_attrs; | |
c906108c | 5529 | |
57349743 | 5530 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
5531 | obstack_init (&cu->abbrev_obstack); |
5532 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
5533 | (ABBREV_HASH_SIZE | |
5534 | * sizeof (struct abbrev_info *))); | |
5535 | memset (cu->dwarf2_abbrevs, 0, | |
5536 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 5537 | |
6502dd73 | 5538 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
5539 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5540 | abbrev_ptr += bytes_read; | |
5541 | ||
f3dd6933 DJ |
5542 | allocated_attrs = ATTR_ALLOC_CHUNK; |
5543 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
5544 | ||
c906108c SS |
5545 | /* loop until we reach an abbrev number of 0 */ |
5546 | while (abbrev_number) | |
5547 | { | |
f3dd6933 | 5548 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
5549 | |
5550 | /* read in abbrev header */ | |
5551 | cur_abbrev->number = abbrev_number; | |
5552 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5553 | abbrev_ptr += bytes_read; | |
5554 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
5555 | abbrev_ptr += 1; | |
5556 | ||
72bf9492 DJ |
5557 | if (cur_abbrev->tag == DW_TAG_namespace) |
5558 | cu->has_namespace_info = 1; | |
5559 | ||
c906108c SS |
5560 | /* now read in declarations */ |
5561 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5562 | abbrev_ptr += bytes_read; | |
5563 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5564 | abbrev_ptr += bytes_read; | |
5565 | while (abbrev_name) | |
5566 | { | |
f3dd6933 | 5567 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 5568 | { |
f3dd6933 DJ |
5569 | allocated_attrs += ATTR_ALLOC_CHUNK; |
5570 | cur_attrs | |
5571 | = xrealloc (cur_attrs, (allocated_attrs | |
5572 | * sizeof (struct attr_abbrev))); | |
c906108c | 5573 | } |
ae038cb0 DJ |
5574 | |
5575 | /* Record whether this compilation unit might have | |
5576 | inter-compilation-unit references. If we don't know what form | |
5577 | this attribute will have, then it might potentially be a | |
5578 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
5579 | references. */ | |
5580 | ||
5581 | if (abbrev_form == DW_FORM_ref_addr | |
5582 | || abbrev_form == DW_FORM_indirect) | |
5583 | cu->has_form_ref_addr = 1; | |
5584 | ||
f3dd6933 DJ |
5585 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
5586 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
5587 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5588 | abbrev_ptr += bytes_read; | |
5589 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5590 | abbrev_ptr += bytes_read; | |
5591 | } | |
5592 | ||
f3dd6933 DJ |
5593 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
5594 | (cur_abbrev->num_attrs | |
5595 | * sizeof (struct attr_abbrev))); | |
5596 | memcpy (cur_abbrev->attrs, cur_attrs, | |
5597 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
5598 | ||
c906108c | 5599 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
5600 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
5601 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
5602 | |
5603 | /* Get next abbreviation. | |
5604 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
5605 | always properly terminated with an abbrev number of 0. |
5606 | Exit loop if we encounter an abbreviation which we have | |
5607 | already read (which means we are about to read the abbreviations | |
5608 | for the next compile unit) or if the end of the abbreviation | |
5609 | table is reached. */ | |
6502dd73 DJ |
5610 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev_buffer) |
5611 | >= dwarf2_per_objfile->abbrev_size) | |
c906108c SS |
5612 | break; |
5613 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5614 | abbrev_ptr += bytes_read; | |
e7c27a73 | 5615 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
5616 | break; |
5617 | } | |
f3dd6933 DJ |
5618 | |
5619 | xfree (cur_attrs); | |
c906108c SS |
5620 | } |
5621 | ||
f3dd6933 | 5622 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 5623 | |
c906108c | 5624 | static void |
f3dd6933 | 5625 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 5626 | { |
f3dd6933 | 5627 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 5628 | |
f3dd6933 DJ |
5629 | obstack_free (&cu->abbrev_obstack, NULL); |
5630 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
5631 | } |
5632 | ||
5633 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
5634 | ||
5635 | static struct abbrev_info * | |
e7c27a73 | 5636 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
5637 | { |
5638 | unsigned int hash_number; | |
5639 | struct abbrev_info *abbrev; | |
5640 | ||
5641 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 5642 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
5643 | |
5644 | while (abbrev) | |
5645 | { | |
5646 | if (abbrev->number == number) | |
5647 | return abbrev; | |
5648 | else | |
5649 | abbrev = abbrev->next; | |
5650 | } | |
5651 | return NULL; | |
5652 | } | |
5653 | ||
72bf9492 DJ |
5654 | /* Returns nonzero if TAG represents a type that we might generate a partial |
5655 | symbol for. */ | |
5656 | ||
5657 | static int | |
5658 | is_type_tag_for_partial (int tag) | |
5659 | { | |
5660 | switch (tag) | |
5661 | { | |
5662 | #if 0 | |
5663 | /* Some types that would be reasonable to generate partial symbols for, | |
5664 | that we don't at present. */ | |
5665 | case DW_TAG_array_type: | |
5666 | case DW_TAG_file_type: | |
5667 | case DW_TAG_ptr_to_member_type: | |
5668 | case DW_TAG_set_type: | |
5669 | case DW_TAG_string_type: | |
5670 | case DW_TAG_subroutine_type: | |
5671 | #endif | |
5672 | case DW_TAG_base_type: | |
5673 | case DW_TAG_class_type: | |
680b30c7 | 5674 | case DW_TAG_interface_type: |
72bf9492 DJ |
5675 | case DW_TAG_enumeration_type: |
5676 | case DW_TAG_structure_type: | |
5677 | case DW_TAG_subrange_type: | |
5678 | case DW_TAG_typedef: | |
5679 | case DW_TAG_union_type: | |
5680 | return 1; | |
5681 | default: | |
5682 | return 0; | |
5683 | } | |
5684 | } | |
5685 | ||
5686 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
5687 | ||
5688 | static struct partial_die_info * | |
fe1b8b76 | 5689 | load_partial_dies (bfd *abfd, gdb_byte *info_ptr, int building_psymtab, |
72bf9492 DJ |
5690 | struct dwarf2_cu *cu) |
5691 | { | |
5692 | struct partial_die_info *part_die; | |
5693 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
5694 | struct abbrev_info *abbrev; | |
5695 | unsigned int bytes_read; | |
5afb4e99 | 5696 | unsigned int load_all = 0; |
72bf9492 DJ |
5697 | |
5698 | int nesting_level = 1; | |
5699 | ||
5700 | parent_die = NULL; | |
5701 | last_die = NULL; | |
5702 | ||
5afb4e99 DJ |
5703 | if (cu->per_cu && cu->per_cu->load_all_dies) |
5704 | load_all = 1; | |
5705 | ||
72bf9492 DJ |
5706 | cu->partial_dies |
5707 | = htab_create_alloc_ex (cu->header.length / 12, | |
5708 | partial_die_hash, | |
5709 | partial_die_eq, | |
5710 | NULL, | |
5711 | &cu->comp_unit_obstack, | |
5712 | hashtab_obstack_allocate, | |
5713 | dummy_obstack_deallocate); | |
5714 | ||
5715 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5716 | sizeof (struct partial_die_info)); | |
5717 | ||
5718 | while (1) | |
5719 | { | |
5720 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5721 | ||
5722 | /* A NULL abbrev means the end of a series of children. */ | |
5723 | if (abbrev == NULL) | |
5724 | { | |
5725 | if (--nesting_level == 0) | |
5726 | { | |
5727 | /* PART_DIE was probably the last thing allocated on the | |
5728 | comp_unit_obstack, so we could call obstack_free | |
5729 | here. We don't do that because the waste is small, | |
5730 | and will be cleaned up when we're done with this | |
5731 | compilation unit. This way, we're also more robust | |
5732 | against other users of the comp_unit_obstack. */ | |
5733 | return first_die; | |
5734 | } | |
5735 | info_ptr += bytes_read; | |
5736 | last_die = parent_die; | |
5737 | parent_die = parent_die->die_parent; | |
5738 | continue; | |
5739 | } | |
5740 | ||
5afb4e99 DJ |
5741 | /* Check whether this DIE is interesting enough to save. Normally |
5742 | we would not be interested in members here, but there may be | |
5743 | later variables referencing them via DW_AT_specification (for | |
5744 | static members). */ | |
5745 | if (!load_all | |
5746 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
5747 | && abbrev->tag != DW_TAG_enumerator |
5748 | && abbrev->tag != DW_TAG_subprogram | |
bc30ff58 | 5749 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 5750 | && abbrev->tag != DW_TAG_variable |
5afb4e99 DJ |
5751 | && abbrev->tag != DW_TAG_namespace |
5752 | && abbrev->tag != DW_TAG_member) | |
72bf9492 DJ |
5753 | { |
5754 | /* Otherwise we skip to the next sibling, if any. */ | |
5755 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
5756 | continue; | |
5757 | } | |
5758 | ||
5759 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, | |
5760 | abfd, info_ptr, cu); | |
5761 | ||
5762 | /* This two-pass algorithm for processing partial symbols has a | |
5763 | high cost in cache pressure. Thus, handle some simple cases | |
5764 | here which cover the majority of C partial symbols. DIEs | |
5765 | which neither have specification tags in them, nor could have | |
5766 | specification tags elsewhere pointing at them, can simply be | |
5767 | processed and discarded. | |
5768 | ||
5769 | This segment is also optional; scan_partial_symbols and | |
5770 | add_partial_symbol will handle these DIEs if we chain | |
5771 | them in normally. When compilers which do not emit large | |
5772 | quantities of duplicate debug information are more common, | |
5773 | this code can probably be removed. */ | |
5774 | ||
5775 | /* Any complete simple types at the top level (pretty much all | |
5776 | of them, for a language without namespaces), can be processed | |
5777 | directly. */ | |
5778 | if (parent_die == NULL | |
5779 | && part_die->has_specification == 0 | |
5780 | && part_die->is_declaration == 0 | |
5781 | && (part_die->tag == DW_TAG_typedef | |
5782 | || part_die->tag == DW_TAG_base_type | |
5783 | || part_die->tag == DW_TAG_subrange_type)) | |
5784 | { | |
5785 | if (building_psymtab && part_die->name != NULL) | |
5786 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5787 | VAR_DOMAIN, LOC_TYPEDEF, | |
5788 | &cu->objfile->static_psymbols, | |
5789 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5790 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5791 | continue; | |
5792 | } | |
5793 | ||
5794 | /* If we're at the second level, and we're an enumerator, and | |
5795 | our parent has no specification (meaning possibly lives in a | |
5796 | namespace elsewhere), then we can add the partial symbol now | |
5797 | instead of queueing it. */ | |
5798 | if (part_die->tag == DW_TAG_enumerator | |
5799 | && parent_die != NULL | |
5800 | && parent_die->die_parent == NULL | |
5801 | && parent_die->tag == DW_TAG_enumeration_type | |
5802 | && parent_die->has_specification == 0) | |
5803 | { | |
5804 | if (part_die->name == NULL) | |
e2e0b3e5 | 5805 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 DJ |
5806 | else if (building_psymtab) |
5807 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5808 | VAR_DOMAIN, LOC_CONST, | |
987504bb JJ |
5809 | (cu->language == language_cplus |
5810 | || cu->language == language_java) | |
72bf9492 DJ |
5811 | ? &cu->objfile->global_psymbols |
5812 | : &cu->objfile->static_psymbols, | |
5813 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5814 | ||
5815 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5816 | continue; | |
5817 | } | |
5818 | ||
5819 | /* We'll save this DIE so link it in. */ | |
5820 | part_die->die_parent = parent_die; | |
5821 | part_die->die_sibling = NULL; | |
5822 | part_die->die_child = NULL; | |
5823 | ||
5824 | if (last_die && last_die == parent_die) | |
5825 | last_die->die_child = part_die; | |
5826 | else if (last_die) | |
5827 | last_die->die_sibling = part_die; | |
5828 | ||
5829 | last_die = part_die; | |
5830 | ||
5831 | if (first_die == NULL) | |
5832 | first_die = part_die; | |
5833 | ||
5834 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
5835 | find interesting need to be in the hash table, because we | |
5836 | also have the parent/sibling/child chains; only those that we | |
5837 | might refer to by offset later during partial symbol reading. | |
5838 | ||
5839 | For now this means things that might have be the target of a | |
5840 | DW_AT_specification, DW_AT_abstract_origin, or | |
5841 | DW_AT_extension. DW_AT_extension will refer only to | |
5842 | namespaces; DW_AT_abstract_origin refers to functions (and | |
5843 | many things under the function DIE, but we do not recurse | |
5844 | into function DIEs during partial symbol reading) and | |
5845 | possibly variables as well; DW_AT_specification refers to | |
5846 | declarations. Declarations ought to have the DW_AT_declaration | |
5847 | flag. It happens that GCC forgets to put it in sometimes, but | |
5848 | only for functions, not for types. | |
5849 | ||
5850 | Adding more things than necessary to the hash table is harmless | |
5851 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
5852 | wasted time in find_partial_die, when we reread the compilation |
5853 | unit with load_all_dies set. */ | |
72bf9492 | 5854 | |
5afb4e99 DJ |
5855 | if (load_all |
5856 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
5857 | || abbrev->tag == DW_TAG_variable |
5858 | || abbrev->tag == DW_TAG_namespace | |
5859 | || part_die->is_declaration) | |
5860 | { | |
5861 | void **slot; | |
5862 | ||
5863 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
5864 | part_die->offset, INSERT); | |
5865 | *slot = part_die; | |
5866 | } | |
5867 | ||
5868 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5869 | sizeof (struct partial_die_info)); | |
5870 | ||
5871 | /* For some DIEs we want to follow their children (if any). For C | |
bc30ff58 | 5872 | we have no reason to follow the children of structures; for other |
72bf9492 | 5873 | languages we have to, both so that we can get at method physnames |
bc30ff58 JB |
5874 | to infer fully qualified class names, and for DW_AT_specification. |
5875 | ||
5876 | For Ada, we need to scan the children of subprograms and lexical | |
5877 | blocks as well because Ada allows the definition of nested | |
5878 | entities that could be interesting for the debugger, such as | |
5879 | nested subprograms for instance. */ | |
72bf9492 | 5880 | if (last_die->has_children |
5afb4e99 DJ |
5881 | && (load_all |
5882 | || last_die->tag == DW_TAG_namespace | |
72bf9492 DJ |
5883 | || last_die->tag == DW_TAG_enumeration_type |
5884 | || (cu->language != language_c | |
5885 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 5886 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 5887 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
5888 | || last_die->tag == DW_TAG_union_type)) |
5889 | || (cu->language == language_ada | |
5890 | && (last_die->tag == DW_TAG_subprogram | |
5891 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
5892 | { |
5893 | nesting_level++; | |
5894 | parent_die = last_die; | |
5895 | continue; | |
5896 | } | |
5897 | ||
5898 | /* Otherwise we skip to the next sibling, if any. */ | |
5899 | info_ptr = locate_pdi_sibling (last_die, info_ptr, abfd, cu); | |
5900 | ||
5901 | /* Back to the top, do it again. */ | |
5902 | } | |
5903 | } | |
5904 | ||
c906108c SS |
5905 | /* Read a minimal amount of information into the minimal die structure. */ |
5906 | ||
fe1b8b76 | 5907 | static gdb_byte * |
72bf9492 DJ |
5908 | read_partial_die (struct partial_die_info *part_die, |
5909 | struct abbrev_info *abbrev, | |
5910 | unsigned int abbrev_len, bfd *abfd, | |
fe1b8b76 | 5911 | gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 5912 | { |
72bf9492 | 5913 | unsigned int bytes_read, i; |
c906108c | 5914 | struct attribute attr; |
c5aa993b | 5915 | int has_low_pc_attr = 0; |
c906108c | 5916 | int has_high_pc_attr = 0; |
e7030f15 | 5917 | CORE_ADDR base_address = 0; |
85cbf3d3 JK |
5918 | enum |
5919 | { | |
5920 | base_address_none, | |
5921 | base_address_low_pc, | |
5922 | /* Overrides BASE_ADDRESS_LOW_PC. */ | |
5923 | base_address_entry_pc | |
5924 | } | |
5925 | base_address_type = base_address_none; | |
c906108c | 5926 | |
72bf9492 | 5927 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 5928 | |
6502dd73 | 5929 | part_die->offset = info_ptr - dwarf2_per_objfile->info_buffer; |
72bf9492 DJ |
5930 | |
5931 | info_ptr += abbrev_len; | |
5932 | ||
5933 | if (abbrev == NULL) | |
5934 | return info_ptr; | |
5935 | ||
c906108c SS |
5936 | part_die->tag = abbrev->tag; |
5937 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
5938 | |
5939 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5940 | { | |
e7c27a73 | 5941 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
5942 | |
5943 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 5944 | partial symbol table. */ |
c906108c SS |
5945 | switch (attr.name) |
5946 | { | |
5947 | case DW_AT_name: | |
5948 | ||
5949 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
5950 | if (part_die->name == NULL) | |
5951 | part_die->name = DW_STRING (&attr); | |
5952 | break; | |
57c22c6c BR |
5953 | case DW_AT_comp_dir: |
5954 | if (part_die->dirname == NULL) | |
5955 | part_die->dirname = DW_STRING (&attr); | |
5956 | break; | |
c906108c SS |
5957 | case DW_AT_MIPS_linkage_name: |
5958 | part_die->name = DW_STRING (&attr); | |
5959 | break; | |
5960 | case DW_AT_low_pc: | |
5961 | has_low_pc_attr = 1; | |
5962 | part_die->lowpc = DW_ADDR (&attr); | |
85cbf3d3 JK |
5963 | if (part_die->tag == DW_TAG_compile_unit |
5964 | && base_address_type < base_address_low_pc) | |
5965 | { | |
5966 | base_address = DW_ADDR (&attr); | |
5967 | base_address_type = base_address_low_pc; | |
5968 | } | |
c906108c SS |
5969 | break; |
5970 | case DW_AT_high_pc: | |
5971 | has_high_pc_attr = 1; | |
5972 | part_die->highpc = DW_ADDR (&attr); | |
5973 | break; | |
85cbf3d3 JK |
5974 | case DW_AT_entry_pc: |
5975 | if (part_die->tag == DW_TAG_compile_unit | |
5976 | && base_address_type < base_address_entry_pc) | |
5977 | { | |
5978 | base_address = DW_ADDR (&attr); | |
5979 | base_address_type = base_address_entry_pc; | |
5980 | } | |
5981 | break; | |
43039443 | 5982 | case DW_AT_ranges: |
ff013f42 JK |
5983 | if (part_die->tag == DW_TAG_compile_unit) |
5984 | { | |
5985 | cu->ranges_offset = DW_UNSND (&attr); | |
5986 | cu->has_ranges_offset = 1; | |
5987 | } | |
43039443 | 5988 | break; |
c906108c | 5989 | case DW_AT_location: |
8e19ed76 PS |
5990 | /* Support the .debug_loc offsets */ |
5991 | if (attr_form_is_block (&attr)) | |
5992 | { | |
5993 | part_die->locdesc = DW_BLOCK (&attr); | |
5994 | } | |
3690dd37 | 5995 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 5996 | { |
4d3c2250 | 5997 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5998 | } |
5999 | else | |
6000 | { | |
4d3c2250 KB |
6001 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
6002 | "partial symbol information"); | |
8e19ed76 | 6003 | } |
c906108c SS |
6004 | break; |
6005 | case DW_AT_language: | |
6006 | part_die->language = DW_UNSND (&attr); | |
6007 | break; | |
6008 | case DW_AT_external: | |
6009 | part_die->is_external = DW_UNSND (&attr); | |
6010 | break; | |
6011 | case DW_AT_declaration: | |
6012 | part_die->is_declaration = DW_UNSND (&attr); | |
6013 | break; | |
6014 | case DW_AT_type: | |
6015 | part_die->has_type = 1; | |
6016 | break; | |
6017 | case DW_AT_abstract_origin: | |
6018 | case DW_AT_specification: | |
72bf9492 DJ |
6019 | case DW_AT_extension: |
6020 | part_die->has_specification = 1; | |
c764a876 | 6021 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr); |
c906108c SS |
6022 | break; |
6023 | case DW_AT_sibling: | |
6024 | /* Ignore absolute siblings, they might point outside of | |
6025 | the current compile unit. */ | |
6026 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 6027 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 6028 | else |
6502dd73 | 6029 | part_die->sibling = dwarf2_per_objfile->info_buffer |
c764a876 | 6030 | + dwarf2_get_ref_die_offset (&attr); |
c906108c | 6031 | break; |
aaa75496 JB |
6032 | case DW_AT_stmt_list: |
6033 | part_die->has_stmt_list = 1; | |
6034 | part_die->line_offset = DW_UNSND (&attr); | |
6035 | break; | |
fa4028e9 JB |
6036 | case DW_AT_byte_size: |
6037 | part_die->has_byte_size = 1; | |
6038 | break; | |
68511cec CES |
6039 | case DW_AT_calling_convention: |
6040 | /* DWARF doesn't provide a way to identify a program's source-level | |
6041 | entry point. DW_AT_calling_convention attributes are only meant | |
6042 | to describe functions' calling conventions. | |
6043 | ||
6044 | However, because it's a necessary piece of information in | |
6045 | Fortran, and because DW_CC_program is the only piece of debugging | |
6046 | information whose definition refers to a 'main program' at all, | |
6047 | several compilers have begun marking Fortran main programs with | |
6048 | DW_CC_program --- even when those functions use the standard | |
6049 | calling conventions. | |
6050 | ||
6051 | So until DWARF specifies a way to provide this information and | |
6052 | compilers pick up the new representation, we'll support this | |
6053 | practice. */ | |
6054 | if (DW_UNSND (&attr) == DW_CC_program | |
6055 | && cu->language == language_fortran) | |
6056 | set_main_name (part_die->name); | |
6057 | break; | |
c906108c SS |
6058 | default: |
6059 | break; | |
6060 | } | |
6061 | } | |
6062 | ||
c906108c SS |
6063 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
6064 | eliminate duplicate copies of functions and vtables and such. | |
6065 | The linker will arbitrarily choose one and discard the others. | |
6066 | The AT_*_pc values for such functions refer to local labels in | |
6067 | these sections. If the section from that file was discarded, the | |
6068 | labels are not in the output, so the relocs get a value of 0. | |
6069 | If this is a discarded function, mark the pc bounds as invalid, | |
6070 | so that GDB will ignore it. */ | |
6071 | if (has_low_pc_attr && has_high_pc_attr | |
6072 | && part_die->lowpc < part_die->highpc | |
6073 | && (part_die->lowpc != 0 | |
72dca2f5 | 6074 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 6075 | part_die->has_pc_info = 1; |
85cbf3d3 | 6076 | |
d00adf39 | 6077 | if (base_address_type != base_address_none && !cu->base_known) |
85cbf3d3 JK |
6078 | { |
6079 | gdb_assert (part_die->tag == DW_TAG_compile_unit); | |
d00adf39 DE |
6080 | cu->base_known = 1; |
6081 | cu->base_address = base_address; | |
85cbf3d3 JK |
6082 | } |
6083 | ||
c906108c SS |
6084 | return info_ptr; |
6085 | } | |
6086 | ||
72bf9492 DJ |
6087 | /* Find a cached partial DIE at OFFSET in CU. */ |
6088 | ||
6089 | static struct partial_die_info * | |
c764a876 | 6090 | find_partial_die_in_comp_unit (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
6091 | { |
6092 | struct partial_die_info *lookup_die = NULL; | |
6093 | struct partial_die_info part_die; | |
6094 | ||
6095 | part_die.offset = offset; | |
6096 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
6097 | ||
72bf9492 DJ |
6098 | return lookup_die; |
6099 | } | |
6100 | ||
6101 | /* Find a partial DIE at OFFSET, which may or may not be in CU. */ | |
6102 | ||
6103 | static struct partial_die_info * | |
c764a876 | 6104 | find_partial_die (unsigned int offset, struct dwarf2_cu *cu) |
72bf9492 | 6105 | { |
5afb4e99 DJ |
6106 | struct dwarf2_per_cu_data *per_cu = NULL; |
6107 | struct partial_die_info *pd = NULL; | |
72bf9492 | 6108 | |
45452591 | 6109 | if (offset_in_cu_p (&cu->header, offset)) |
5afb4e99 DJ |
6110 | { |
6111 | pd = find_partial_die_in_comp_unit (offset, cu); | |
6112 | if (pd != NULL) | |
6113 | return pd; | |
6114 | } | |
72bf9492 | 6115 | |
ae038cb0 DJ |
6116 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
6117 | ||
ae038cb0 DJ |
6118 | if (per_cu->cu == NULL) |
6119 | { | |
6120 | load_comp_unit (per_cu, cu->objfile); | |
6121 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
6122 | dwarf2_per_objfile->read_in_chain = per_cu; | |
6123 | } | |
6124 | ||
6125 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
6126 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
6127 | ||
6128 | if (pd == NULL && per_cu->load_all_dies == 0) | |
6129 | { | |
6130 | struct cleanup *back_to; | |
6131 | struct partial_die_info comp_unit_die; | |
6132 | struct abbrev_info *abbrev; | |
6133 | unsigned int bytes_read; | |
6134 | char *info_ptr; | |
6135 | ||
6136 | per_cu->load_all_dies = 1; | |
6137 | ||
6138 | /* Re-read the DIEs. */ | |
6139 | back_to = make_cleanup (null_cleanup, 0); | |
6140 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
6141 | { | |
6142 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
6143 | back_to = make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); | |
6144 | } | |
d00adf39 DE |
6145 | info_ptr = (dwarf2_per_objfile->info_buffer |
6146 | + per_cu->cu->header.offset | |
6147 | + per_cu->cu->header.first_die_offset); | |
5afb4e99 DJ |
6148 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); |
6149 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
6150 | per_cu->cu->objfile->obfd, info_ptr, | |
6151 | per_cu->cu); | |
6152 | if (comp_unit_die.has_children) | |
6153 | load_partial_dies (per_cu->cu->objfile->obfd, info_ptr, 0, per_cu->cu); | |
6154 | do_cleanups (back_to); | |
6155 | ||
6156 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
6157 | } | |
6158 | ||
6159 | if (pd == NULL) | |
6160 | internal_error (__FILE__, __LINE__, | |
c764a876 | 6161 | _("could not find partial DIE 0x%x in cache [from module %s]\n"), |
5afb4e99 DJ |
6162 | offset, bfd_get_filename (cu->objfile->obfd)); |
6163 | return pd; | |
72bf9492 DJ |
6164 | } |
6165 | ||
6166 | /* Adjust PART_DIE before generating a symbol for it. This function | |
6167 | may set the is_external flag or change the DIE's name. */ | |
6168 | ||
6169 | static void | |
6170 | fixup_partial_die (struct partial_die_info *part_die, | |
6171 | struct dwarf2_cu *cu) | |
6172 | { | |
6173 | /* If we found a reference attribute and the DIE has no name, try | |
6174 | to find a name in the referred to DIE. */ | |
6175 | ||
6176 | if (part_die->name == NULL && part_die->has_specification) | |
6177 | { | |
6178 | struct partial_die_info *spec_die; | |
72bf9492 | 6179 | |
10b3939b | 6180 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 6181 | |
10b3939b | 6182 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
6183 | |
6184 | if (spec_die->name) | |
6185 | { | |
6186 | part_die->name = spec_die->name; | |
6187 | ||
6188 | /* Copy DW_AT_external attribute if it is set. */ | |
6189 | if (spec_die->is_external) | |
6190 | part_die->is_external = spec_die->is_external; | |
6191 | } | |
6192 | } | |
6193 | ||
6194 | /* Set default names for some unnamed DIEs. */ | |
6195 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
6196 | || part_die->tag == DW_TAG_class_type)) | |
6197 | part_die->name = "(anonymous class)"; | |
6198 | ||
6199 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
6200 | part_die->name = "(anonymous namespace)"; | |
6201 | ||
6202 | if (part_die->tag == DW_TAG_structure_type | |
6203 | || part_die->tag == DW_TAG_class_type | |
6204 | || part_die->tag == DW_TAG_union_type) | |
6205 | guess_structure_name (part_die, cu); | |
6206 | } | |
6207 | ||
639d11d3 DC |
6208 | /* Read the die from the .debug_info section buffer. Set DIEP to |
6209 | point to a newly allocated die with its information, except for its | |
6210 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
6211 | whether the die has children or not. */ | |
c906108c | 6212 | |
fe1b8b76 JB |
6213 | static gdb_byte * |
6214 | read_full_die (struct die_info **diep, bfd *abfd, gdb_byte *info_ptr, | |
e7c27a73 | 6215 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
6216 | { |
6217 | unsigned int abbrev_number, bytes_read, i, offset; | |
6218 | struct abbrev_info *abbrev; | |
6219 | struct die_info *die; | |
6220 | ||
6502dd73 | 6221 | offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
6222 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6223 | info_ptr += bytes_read; | |
6224 | if (!abbrev_number) | |
6225 | { | |
1d325ec1 | 6226 | *diep = NULL; |
639d11d3 | 6227 | *has_children = 0; |
c906108c SS |
6228 | return info_ptr; |
6229 | } | |
6230 | ||
e7c27a73 | 6231 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
6232 | if (!abbrev) |
6233 | { | |
8a3fe4f8 | 6234 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
72bf9492 | 6235 | abbrev_number, |
639d11d3 | 6236 | bfd_get_filename (abfd)); |
c906108c | 6237 | } |
b60c80d6 | 6238 | die = dwarf_alloc_die (cu, abbrev->num_attrs); |
c906108c SS |
6239 | die->offset = offset; |
6240 | die->tag = abbrev->tag; | |
c906108c | 6241 | die->abbrev = abbrev_number; |
c906108c SS |
6242 | |
6243 | die->num_attrs = abbrev->num_attrs; | |
c906108c SS |
6244 | |
6245 | for (i = 0; i < abbrev->num_attrs; ++i) | |
03dd20cc DJ |
6246 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], |
6247 | abfd, info_ptr, cu); | |
c906108c SS |
6248 | |
6249 | *diep = die; | |
639d11d3 | 6250 | *has_children = abbrev->has_children; |
c906108c SS |
6251 | return info_ptr; |
6252 | } | |
6253 | ||
a8329558 | 6254 | /* Read an attribute value described by an attribute form. */ |
c906108c | 6255 | |
fe1b8b76 | 6256 | static gdb_byte * |
a8329558 | 6257 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 6258 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 6259 | struct dwarf2_cu *cu) |
c906108c | 6260 | { |
e7c27a73 | 6261 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
6262 | unsigned int bytes_read; |
6263 | struct dwarf_block *blk; | |
6264 | ||
a8329558 KW |
6265 | attr->form = form; |
6266 | switch (form) | |
c906108c SS |
6267 | { |
6268 | case DW_FORM_addr: | |
6269 | case DW_FORM_ref_addr: | |
e7c27a73 | 6270 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 6271 | info_ptr += bytes_read; |
c906108c SS |
6272 | break; |
6273 | case DW_FORM_block2: | |
7b5a2f43 | 6274 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6275 | blk->size = read_2_bytes (abfd, info_ptr); |
6276 | info_ptr += 2; | |
6277 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6278 | info_ptr += blk->size; | |
6279 | DW_BLOCK (attr) = blk; | |
6280 | break; | |
6281 | case DW_FORM_block4: | |
7b5a2f43 | 6282 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6283 | blk->size = read_4_bytes (abfd, info_ptr); |
6284 | info_ptr += 4; | |
6285 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6286 | info_ptr += blk->size; | |
6287 | DW_BLOCK (attr) = blk; | |
6288 | break; | |
6289 | case DW_FORM_data2: | |
6290 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
6291 | info_ptr += 2; | |
6292 | break; | |
6293 | case DW_FORM_data4: | |
6294 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
6295 | info_ptr += 4; | |
6296 | break; | |
6297 | case DW_FORM_data8: | |
6298 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
6299 | info_ptr += 8; | |
6300 | break; | |
6301 | case DW_FORM_string: | |
6302 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
6303 | info_ptr += bytes_read; | |
6304 | break; | |
4bdf3d34 JJ |
6305 | case DW_FORM_strp: |
6306 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
6307 | &bytes_read); | |
6308 | info_ptr += bytes_read; | |
6309 | break; | |
c906108c | 6310 | case DW_FORM_block: |
7b5a2f43 | 6311 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6312 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6313 | info_ptr += bytes_read; | |
6314 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6315 | info_ptr += blk->size; | |
6316 | DW_BLOCK (attr) = blk; | |
6317 | break; | |
6318 | case DW_FORM_block1: | |
7b5a2f43 | 6319 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6320 | blk->size = read_1_byte (abfd, info_ptr); |
6321 | info_ptr += 1; | |
6322 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6323 | info_ptr += blk->size; | |
6324 | DW_BLOCK (attr) = blk; | |
6325 | break; | |
6326 | case DW_FORM_data1: | |
6327 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
6328 | info_ptr += 1; | |
6329 | break; | |
6330 | case DW_FORM_flag: | |
6331 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
6332 | info_ptr += 1; | |
6333 | break; | |
6334 | case DW_FORM_sdata: | |
6335 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
6336 | info_ptr += bytes_read; | |
6337 | break; | |
6338 | case DW_FORM_udata: | |
6339 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6340 | info_ptr += bytes_read; | |
6341 | break; | |
6342 | case DW_FORM_ref1: | |
10b3939b | 6343 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
6344 | info_ptr += 1; |
6345 | break; | |
6346 | case DW_FORM_ref2: | |
10b3939b | 6347 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
6348 | info_ptr += 2; |
6349 | break; | |
6350 | case DW_FORM_ref4: | |
10b3939b | 6351 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
6352 | info_ptr += 4; |
6353 | break; | |
613e1657 | 6354 | case DW_FORM_ref8: |
10b3939b | 6355 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
6356 | info_ptr += 8; |
6357 | break; | |
c906108c | 6358 | case DW_FORM_ref_udata: |
10b3939b DJ |
6359 | DW_ADDR (attr) = (cu->header.offset |
6360 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
6361 | info_ptr += bytes_read; |
6362 | break; | |
c906108c | 6363 | case DW_FORM_indirect: |
a8329558 KW |
6364 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6365 | info_ptr += bytes_read; | |
e7c27a73 | 6366 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 6367 | break; |
c906108c | 6368 | default: |
8a3fe4f8 | 6369 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
6370 | dwarf_form_name (form), |
6371 | bfd_get_filename (abfd)); | |
c906108c | 6372 | } |
28e94949 JB |
6373 | |
6374 | /* We have seen instances where the compiler tried to emit a byte | |
6375 | size attribute of -1 which ended up being encoded as an unsigned | |
6376 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
6377 | an object of this size seems pretty unlikely so we can relatively | |
6378 | safely treat these cases as if the size attribute was invalid and | |
6379 | treat them as zero by default. */ | |
6380 | if (attr->name == DW_AT_byte_size | |
6381 | && form == DW_FORM_data4 | |
6382 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
6383 | { |
6384 | complaint | |
6385 | (&symfile_complaints, | |
6386 | _("Suspicious DW_AT_byte_size value treated as zero instead of 0x%lx"), | |
6387 | DW_UNSND (attr)); | |
6388 | DW_UNSND (attr) = 0; | |
6389 | } | |
28e94949 | 6390 | |
c906108c SS |
6391 | return info_ptr; |
6392 | } | |
6393 | ||
a8329558 KW |
6394 | /* Read an attribute described by an abbreviated attribute. */ |
6395 | ||
fe1b8b76 | 6396 | static gdb_byte * |
a8329558 | 6397 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 6398 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
6399 | { |
6400 | attr->name = abbrev->name; | |
e7c27a73 | 6401 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
6402 | } |
6403 | ||
c906108c SS |
6404 | /* read dwarf information from a buffer */ |
6405 | ||
6406 | static unsigned int | |
fe1b8b76 | 6407 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 6408 | { |
fe1b8b76 | 6409 | return bfd_get_8 (abfd, buf); |
c906108c SS |
6410 | } |
6411 | ||
6412 | static int | |
fe1b8b76 | 6413 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 6414 | { |
fe1b8b76 | 6415 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
6416 | } |
6417 | ||
6418 | static unsigned int | |
fe1b8b76 | 6419 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6420 | { |
fe1b8b76 | 6421 | return bfd_get_16 (abfd, buf); |
c906108c SS |
6422 | } |
6423 | ||
6424 | static int | |
fe1b8b76 | 6425 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6426 | { |
fe1b8b76 | 6427 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
6428 | } |
6429 | ||
6430 | static unsigned int | |
fe1b8b76 | 6431 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6432 | { |
fe1b8b76 | 6433 | return bfd_get_32 (abfd, buf); |
c906108c SS |
6434 | } |
6435 | ||
6436 | static int | |
fe1b8b76 | 6437 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6438 | { |
fe1b8b76 | 6439 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
6440 | } |
6441 | ||
ce5d95e1 | 6442 | static unsigned long |
fe1b8b76 | 6443 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6444 | { |
fe1b8b76 | 6445 | return bfd_get_64 (abfd, buf); |
c906108c SS |
6446 | } |
6447 | ||
6448 | static CORE_ADDR | |
fe1b8b76 | 6449 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 6450 | unsigned int *bytes_read) |
c906108c | 6451 | { |
e7c27a73 | 6452 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
6453 | CORE_ADDR retval = 0; |
6454 | ||
107d2387 | 6455 | if (cu_header->signed_addr_p) |
c906108c | 6456 | { |
107d2387 AC |
6457 | switch (cu_header->addr_size) |
6458 | { | |
6459 | case 2: | |
fe1b8b76 | 6460 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
6461 | break; |
6462 | case 4: | |
fe1b8b76 | 6463 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
6464 | break; |
6465 | case 8: | |
fe1b8b76 | 6466 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
6467 | break; |
6468 | default: | |
8e65ff28 | 6469 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6470 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 6471 | bfd_get_filename (abfd)); |
107d2387 AC |
6472 | } |
6473 | } | |
6474 | else | |
6475 | { | |
6476 | switch (cu_header->addr_size) | |
6477 | { | |
6478 | case 2: | |
fe1b8b76 | 6479 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
6480 | break; |
6481 | case 4: | |
fe1b8b76 | 6482 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
6483 | break; |
6484 | case 8: | |
fe1b8b76 | 6485 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
6486 | break; |
6487 | default: | |
8e65ff28 | 6488 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6489 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 6490 | bfd_get_filename (abfd)); |
107d2387 | 6491 | } |
c906108c | 6492 | } |
64367e0a | 6493 | |
107d2387 AC |
6494 | *bytes_read = cu_header->addr_size; |
6495 | return retval; | |
c906108c SS |
6496 | } |
6497 | ||
f7ef9339 | 6498 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
6499 | specification allows the initial length to take up either 4 bytes |
6500 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
6501 | bytes describe the length and all offsets will be 8 bytes in length | |
6502 | instead of 4. | |
6503 | ||
f7ef9339 KB |
6504 | An older, non-standard 64-bit format is also handled by this |
6505 | function. The older format in question stores the initial length | |
6506 | as an 8-byte quantity without an escape value. Lengths greater | |
6507 | than 2^32 aren't very common which means that the initial 4 bytes | |
6508 | is almost always zero. Since a length value of zero doesn't make | |
6509 | sense for the 32-bit format, this initial zero can be considered to | |
6510 | be an escape value which indicates the presence of the older 64-bit | |
6511 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
6512 | greater than 4GB. If it becomes necessary to handle lengths |
6513 | somewhat larger than 4GB, we could allow other small values (such | |
6514 | as the non-sensical values of 1, 2, and 3) to also be used as | |
6515 | escape values indicating the presence of the old format. | |
f7ef9339 | 6516 | |
917c78fc MK |
6517 | The value returned via bytes_read should be used to increment the |
6518 | relevant pointer after calling read_initial_length(). | |
c764a876 | 6519 | |
613e1657 KB |
6520 | [ Note: read_initial_length() and read_offset() are based on the |
6521 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 6522 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
6523 | from: |
6524 | ||
f7ef9339 | 6525 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
6526 | |
6527 | This document is only a draft and is subject to change. (So beware.) | |
6528 | ||
f7ef9339 | 6529 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
6530 | determined empirically by examining 64-bit ELF files produced by |
6531 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
6532 | |
6533 | - Kevin, July 16, 2002 | |
613e1657 KB |
6534 | ] */ |
6535 | ||
6536 | static LONGEST | |
c764a876 | 6537 | read_initial_length (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 6538 | { |
fe1b8b76 | 6539 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 6540 | |
dd373385 | 6541 | if (length == 0xffffffff) |
613e1657 | 6542 | { |
fe1b8b76 | 6543 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 6544 | *bytes_read = 12; |
613e1657 | 6545 | } |
dd373385 | 6546 | else if (length == 0) |
f7ef9339 | 6547 | { |
dd373385 | 6548 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 6549 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 6550 | *bytes_read = 8; |
f7ef9339 | 6551 | } |
613e1657 KB |
6552 | else |
6553 | { | |
6554 | *bytes_read = 4; | |
613e1657 KB |
6555 | } |
6556 | ||
c764a876 DE |
6557 | return length; |
6558 | } | |
dd373385 | 6559 | |
c764a876 DE |
6560 | /* Cover function for read_initial_length. |
6561 | Returns the length of the object at BUF, and stores the size of the | |
6562 | initial length in *BYTES_READ and stores the size that offsets will be in | |
6563 | *OFFSET_SIZE. | |
6564 | If the initial length size is not equivalent to that specified in | |
6565 | CU_HEADER then issue a complaint. | |
6566 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 6567 | |
c764a876 DE |
6568 | static LONGEST |
6569 | read_checked_initial_length_and_offset (bfd *abfd, gdb_byte *buf, | |
6570 | const struct comp_unit_head *cu_header, | |
6571 | unsigned int *bytes_read, | |
6572 | unsigned int *offset_size) | |
6573 | { | |
6574 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
6575 | ||
6576 | gdb_assert (cu_header->initial_length_size == 4 | |
6577 | || cu_header->initial_length_size == 8 | |
6578 | || cu_header->initial_length_size == 12); | |
6579 | ||
6580 | if (cu_header->initial_length_size != *bytes_read) | |
6581 | complaint (&symfile_complaints, | |
6582 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
dd373385 | 6583 | |
c764a876 | 6584 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 6585 | return length; |
613e1657 KB |
6586 | } |
6587 | ||
6588 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 6589 | given by cu_header->offset_size. */ |
613e1657 KB |
6590 | |
6591 | static LONGEST | |
fe1b8b76 | 6592 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 6593 | unsigned int *bytes_read) |
c764a876 DE |
6594 | { |
6595 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
6596 | *bytes_read = cu_header->offset_size; | |
6597 | return offset; | |
6598 | } | |
6599 | ||
6600 | /* Read an offset from the data stream. */ | |
6601 | ||
6602 | static LONGEST | |
6603 | read_offset_1 (bfd *abfd, gdb_byte *buf, unsigned int offset_size) | |
613e1657 KB |
6604 | { |
6605 | LONGEST retval = 0; | |
6606 | ||
c764a876 | 6607 | switch (offset_size) |
613e1657 KB |
6608 | { |
6609 | case 4: | |
fe1b8b76 | 6610 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
6611 | break; |
6612 | case 8: | |
fe1b8b76 | 6613 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
6614 | break; |
6615 | default: | |
8e65ff28 | 6616 | internal_error (__FILE__, __LINE__, |
c764a876 | 6617 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 6618 | bfd_get_filename (abfd)); |
613e1657 KB |
6619 | } |
6620 | ||
917c78fc | 6621 | return retval; |
613e1657 KB |
6622 | } |
6623 | ||
fe1b8b76 JB |
6624 | static gdb_byte * |
6625 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
6626 | { |
6627 | /* If the size of a host char is 8 bits, we can return a pointer | |
6628 | to the buffer, otherwise we have to copy the data to a buffer | |
6629 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6630 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 6631 | return buf; |
c906108c SS |
6632 | } |
6633 | ||
6634 | static char * | |
fe1b8b76 | 6635 | read_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
6636 | { |
6637 | /* If the size of a host char is 8 bits, we can return a pointer | |
6638 | to the string, otherwise we have to copy the string to a buffer | |
6639 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6640 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
6641 | if (*buf == '\0') |
6642 | { | |
6643 | *bytes_read_ptr = 1; | |
6644 | return NULL; | |
6645 | } | |
fe1b8b76 JB |
6646 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
6647 | return (char *) buf; | |
4bdf3d34 JJ |
6648 | } |
6649 | ||
6650 | static char * | |
fe1b8b76 | 6651 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
6652 | const struct comp_unit_head *cu_header, |
6653 | unsigned int *bytes_read_ptr) | |
6654 | { | |
c764a876 | 6655 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); |
c906108c | 6656 | |
6502dd73 | 6657 | if (dwarf2_per_objfile->str_buffer == NULL) |
c906108c | 6658 | { |
8a3fe4f8 | 6659 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 6660 | bfd_get_filename (abfd)); |
4bdf3d34 | 6661 | return NULL; |
c906108c | 6662 | } |
6502dd73 | 6663 | if (str_offset >= dwarf2_per_objfile->str_size) |
c906108c | 6664 | { |
8a3fe4f8 | 6665 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 6666 | bfd_get_filename (abfd)); |
c906108c SS |
6667 | return NULL; |
6668 | } | |
4bdf3d34 | 6669 | gdb_assert (HOST_CHAR_BIT == 8); |
6502dd73 | 6670 | if (dwarf2_per_objfile->str_buffer[str_offset] == '\0') |
4bdf3d34 | 6671 | return NULL; |
fe1b8b76 | 6672 | return (char *) (dwarf2_per_objfile->str_buffer + str_offset); |
c906108c SS |
6673 | } |
6674 | ||
ce5d95e1 | 6675 | static unsigned long |
fe1b8b76 | 6676 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6677 | { |
ce5d95e1 JB |
6678 | unsigned long result; |
6679 | unsigned int num_read; | |
c906108c SS |
6680 | int i, shift; |
6681 | unsigned char byte; | |
6682 | ||
6683 | result = 0; | |
6684 | shift = 0; | |
6685 | num_read = 0; | |
6686 | i = 0; | |
6687 | while (1) | |
6688 | { | |
fe1b8b76 | 6689 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6690 | buf++; |
6691 | num_read++; | |
ce5d95e1 | 6692 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
6693 | if ((byte & 128) == 0) |
6694 | { | |
6695 | break; | |
6696 | } | |
6697 | shift += 7; | |
6698 | } | |
6699 | *bytes_read_ptr = num_read; | |
6700 | return result; | |
6701 | } | |
6702 | ||
ce5d95e1 | 6703 | static long |
fe1b8b76 | 6704 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6705 | { |
ce5d95e1 | 6706 | long result; |
77e0b926 | 6707 | int i, shift, num_read; |
c906108c SS |
6708 | unsigned char byte; |
6709 | ||
6710 | result = 0; | |
6711 | shift = 0; | |
c906108c SS |
6712 | num_read = 0; |
6713 | i = 0; | |
6714 | while (1) | |
6715 | { | |
fe1b8b76 | 6716 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6717 | buf++; |
6718 | num_read++; | |
ce5d95e1 | 6719 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
6720 | shift += 7; |
6721 | if ((byte & 128) == 0) | |
6722 | { | |
6723 | break; | |
6724 | } | |
6725 | } | |
77e0b926 DJ |
6726 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
6727 | result |= -(((long)1) << shift); | |
c906108c SS |
6728 | *bytes_read_ptr = num_read; |
6729 | return result; | |
6730 | } | |
6731 | ||
4bb7a0a7 DJ |
6732 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
6733 | ||
fe1b8b76 JB |
6734 | static gdb_byte * |
6735 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
6736 | { |
6737 | int byte; | |
6738 | ||
6739 | while (1) | |
6740 | { | |
fe1b8b76 | 6741 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
6742 | buf++; |
6743 | if ((byte & 128) == 0) | |
6744 | return buf; | |
6745 | } | |
6746 | } | |
6747 | ||
c906108c | 6748 | static void |
e142c38c | 6749 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
6750 | { |
6751 | switch (lang) | |
6752 | { | |
6753 | case DW_LANG_C89: | |
6754 | case DW_LANG_C: | |
e142c38c | 6755 | cu->language = language_c; |
c906108c SS |
6756 | break; |
6757 | case DW_LANG_C_plus_plus: | |
e142c38c | 6758 | cu->language = language_cplus; |
c906108c SS |
6759 | break; |
6760 | case DW_LANG_Fortran77: | |
6761 | case DW_LANG_Fortran90: | |
b21b22e0 | 6762 | case DW_LANG_Fortran95: |
e142c38c | 6763 | cu->language = language_fortran; |
c906108c SS |
6764 | break; |
6765 | case DW_LANG_Mips_Assembler: | |
e142c38c | 6766 | cu->language = language_asm; |
c906108c | 6767 | break; |
bebd888e | 6768 | case DW_LANG_Java: |
e142c38c | 6769 | cu->language = language_java; |
bebd888e | 6770 | break; |
c906108c | 6771 | case DW_LANG_Ada83: |
8aaf0b47 | 6772 | case DW_LANG_Ada95: |
bc5f45f8 JB |
6773 | cu->language = language_ada; |
6774 | break; | |
72019c9c GM |
6775 | case DW_LANG_Modula2: |
6776 | cu->language = language_m2; | |
6777 | break; | |
fe8e67fd PM |
6778 | case DW_LANG_Pascal83: |
6779 | cu->language = language_pascal; | |
6780 | break; | |
22566fbd DJ |
6781 | case DW_LANG_ObjC: |
6782 | cu->language = language_objc; | |
6783 | break; | |
c906108c SS |
6784 | case DW_LANG_Cobol74: |
6785 | case DW_LANG_Cobol85: | |
c906108c | 6786 | default: |
e142c38c | 6787 | cu->language = language_minimal; |
c906108c SS |
6788 | break; |
6789 | } | |
e142c38c | 6790 | cu->language_defn = language_def (cu->language); |
c906108c SS |
6791 | } |
6792 | ||
6793 | /* Return the named attribute or NULL if not there. */ | |
6794 | ||
6795 | static struct attribute * | |
e142c38c | 6796 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
6797 | { |
6798 | unsigned int i; | |
6799 | struct attribute *spec = NULL; | |
6800 | ||
6801 | for (i = 0; i < die->num_attrs; ++i) | |
6802 | { | |
6803 | if (die->attrs[i].name == name) | |
10b3939b | 6804 | return &die->attrs[i]; |
c906108c SS |
6805 | if (die->attrs[i].name == DW_AT_specification |
6806 | || die->attrs[i].name == DW_AT_abstract_origin) | |
6807 | spec = &die->attrs[i]; | |
6808 | } | |
c906108c | 6809 | |
10b3939b | 6810 | if (spec) |
f2f0e013 DJ |
6811 | { |
6812 | die = follow_die_ref (die, spec, &cu); | |
6813 | return dwarf2_attr (die, name, cu); | |
6814 | } | |
c5aa993b | 6815 | |
c906108c SS |
6816 | return NULL; |
6817 | } | |
6818 | ||
05cf31d1 JB |
6819 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
6820 | and holds a non-zero value. This function should only be used for | |
6821 | DW_FORM_flag attributes. */ | |
6822 | ||
6823 | static int | |
6824 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
6825 | { | |
6826 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
6827 | ||
6828 | return (attr && DW_UNSND (attr)); | |
6829 | } | |
6830 | ||
3ca72b44 | 6831 | static int |
e142c38c | 6832 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 6833 | { |
05cf31d1 JB |
6834 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
6835 | which value is non-zero. However, we have to be careful with | |
6836 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
6837 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
6838 | end up accidently finding a declaration attribute that belongs | |
6839 | to a different DIE referenced by the specification attribute, | |
6840 | even though the given DIE does not have a declaration attribute. */ | |
6841 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
6842 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
6843 | } |
6844 | ||
63d06c5c | 6845 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 DJ |
6846 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
6847 | containing the return value on output. */ | |
63d06c5c DC |
6848 | |
6849 | static struct die_info * | |
f2f0e013 | 6850 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 6851 | { |
f2f0e013 DJ |
6852 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
6853 | *spec_cu); | |
63d06c5c DC |
6854 | |
6855 | if (spec_attr == NULL) | |
6856 | return NULL; | |
6857 | else | |
f2f0e013 | 6858 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 6859 | } |
c906108c | 6860 | |
debd256d JB |
6861 | /* Free the line_header structure *LH, and any arrays and strings it |
6862 | refers to. */ | |
6863 | static void | |
6864 | free_line_header (struct line_header *lh) | |
6865 | { | |
6866 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 6867 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
6868 | |
6869 | /* Remember that all the lh->file_names[i].name pointers are | |
6870 | pointers into debug_line_buffer, and don't need to be freed. */ | |
6871 | if (lh->file_names) | |
a8bc7b56 | 6872 | xfree (lh->file_names); |
debd256d JB |
6873 | |
6874 | /* Similarly for the include directory names. */ | |
6875 | if (lh->include_dirs) | |
a8bc7b56 | 6876 | xfree (lh->include_dirs); |
debd256d | 6877 | |
a8bc7b56 | 6878 | xfree (lh); |
debd256d JB |
6879 | } |
6880 | ||
6881 | ||
6882 | /* Add an entry to LH's include directory table. */ | |
6883 | static void | |
6884 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 6885 | { |
debd256d JB |
6886 | /* Grow the array if necessary. */ |
6887 | if (lh->include_dirs_size == 0) | |
c5aa993b | 6888 | { |
debd256d JB |
6889 | lh->include_dirs_size = 1; /* for testing */ |
6890 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
6891 | * sizeof (*lh->include_dirs)); | |
6892 | } | |
6893 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
6894 | { | |
6895 | lh->include_dirs_size *= 2; | |
6896 | lh->include_dirs = xrealloc (lh->include_dirs, | |
6897 | (lh->include_dirs_size | |
6898 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 6899 | } |
c906108c | 6900 | |
debd256d JB |
6901 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
6902 | } | |
6903 | ||
6904 | ||
6905 | /* Add an entry to LH's file name table. */ | |
6906 | static void | |
6907 | add_file_name (struct line_header *lh, | |
6908 | char *name, | |
6909 | unsigned int dir_index, | |
6910 | unsigned int mod_time, | |
6911 | unsigned int length) | |
6912 | { | |
6913 | struct file_entry *fe; | |
6914 | ||
6915 | /* Grow the array if necessary. */ | |
6916 | if (lh->file_names_size == 0) | |
6917 | { | |
6918 | lh->file_names_size = 1; /* for testing */ | |
6919 | lh->file_names = xmalloc (lh->file_names_size | |
6920 | * sizeof (*lh->file_names)); | |
6921 | } | |
6922 | else if (lh->num_file_names >= lh->file_names_size) | |
6923 | { | |
6924 | lh->file_names_size *= 2; | |
6925 | lh->file_names = xrealloc (lh->file_names, | |
6926 | (lh->file_names_size | |
6927 | * sizeof (*lh->file_names))); | |
6928 | } | |
6929 | ||
6930 | fe = &lh->file_names[lh->num_file_names++]; | |
6931 | fe->name = name; | |
6932 | fe->dir_index = dir_index; | |
6933 | fe->mod_time = mod_time; | |
6934 | fe->length = length; | |
aaa75496 | 6935 | fe->included_p = 0; |
cb1df416 | 6936 | fe->symtab = NULL; |
debd256d JB |
6937 | } |
6938 | ||
6939 | ||
6940 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
6941 | .debug_line, according to the endianness of ABFD. Return a pointer |
6942 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
6943 | |
6944 | NOTE: the strings in the include directory and file name tables of | |
6945 | the returned object point into debug_line_buffer, and must not be | |
6946 | freed. */ | |
6947 | static struct line_header * | |
6948 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 6949 | struct dwarf2_cu *cu) |
debd256d JB |
6950 | { |
6951 | struct cleanup *back_to; | |
6952 | struct line_header *lh; | |
fe1b8b76 | 6953 | gdb_byte *line_ptr; |
c764a876 | 6954 | unsigned int bytes_read, offset_size; |
debd256d JB |
6955 | int i; |
6956 | char *cur_dir, *cur_file; | |
6957 | ||
6502dd73 | 6958 | if (dwarf2_per_objfile->line_buffer == NULL) |
debd256d | 6959 | { |
e2e0b3e5 | 6960 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
6961 | return 0; |
6962 | } | |
6963 | ||
a738430d MK |
6964 | /* Make sure that at least there's room for the total_length field. |
6965 | That could be 12 bytes long, but we're just going to fudge that. */ | |
6502dd73 | 6966 | if (offset + 4 >= dwarf2_per_objfile->line_size) |
debd256d | 6967 | { |
4d3c2250 | 6968 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6969 | return 0; |
6970 | } | |
6971 | ||
6972 | lh = xmalloc (sizeof (*lh)); | |
6973 | memset (lh, 0, sizeof (*lh)); | |
6974 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
6975 | (void *) lh); | |
6976 | ||
6502dd73 | 6977 | line_ptr = dwarf2_per_objfile->line_buffer + offset; |
debd256d | 6978 | |
a738430d | 6979 | /* Read in the header. */ |
dd373385 | 6980 | lh->total_length = |
c764a876 DE |
6981 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
6982 | &bytes_read, &offset_size); | |
debd256d | 6983 | line_ptr += bytes_read; |
6502dd73 DJ |
6984 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line_buffer |
6985 | + dwarf2_per_objfile->line_size)) | |
debd256d | 6986 | { |
4d3c2250 | 6987 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6988 | return 0; |
6989 | } | |
6990 | lh->statement_program_end = line_ptr + lh->total_length; | |
6991 | lh->version = read_2_bytes (abfd, line_ptr); | |
6992 | line_ptr += 2; | |
c764a876 DE |
6993 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
6994 | line_ptr += offset_size; | |
debd256d JB |
6995 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
6996 | line_ptr += 1; | |
6997 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
6998 | line_ptr += 1; | |
6999 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
7000 | line_ptr += 1; | |
7001 | lh->line_range = read_1_byte (abfd, line_ptr); | |
7002 | line_ptr += 1; | |
7003 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
7004 | line_ptr += 1; | |
7005 | lh->standard_opcode_lengths | |
fe1b8b76 | 7006 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
7007 | |
7008 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
7009 | for (i = 1; i < lh->opcode_base; ++i) | |
7010 | { | |
7011 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
7012 | line_ptr += 1; | |
7013 | } | |
7014 | ||
a738430d | 7015 | /* Read directory table. */ |
debd256d JB |
7016 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
7017 | { | |
7018 | line_ptr += bytes_read; | |
7019 | add_include_dir (lh, cur_dir); | |
7020 | } | |
7021 | line_ptr += bytes_read; | |
7022 | ||
a738430d | 7023 | /* Read file name table. */ |
debd256d JB |
7024 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
7025 | { | |
7026 | unsigned int dir_index, mod_time, length; | |
7027 | ||
7028 | line_ptr += bytes_read; | |
7029 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7030 | line_ptr += bytes_read; | |
7031 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7032 | line_ptr += bytes_read; | |
7033 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7034 | line_ptr += bytes_read; | |
7035 | ||
7036 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
7037 | } | |
7038 | line_ptr += bytes_read; | |
7039 | lh->statement_program_start = line_ptr; | |
7040 | ||
6502dd73 DJ |
7041 | if (line_ptr > (dwarf2_per_objfile->line_buffer |
7042 | + dwarf2_per_objfile->line_size)) | |
4d3c2250 | 7043 | complaint (&symfile_complaints, |
e2e0b3e5 | 7044 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
7045 | |
7046 | discard_cleanups (back_to); | |
7047 | return lh; | |
7048 | } | |
c906108c | 7049 | |
5fb290d7 DJ |
7050 | /* This function exists to work around a bug in certain compilers |
7051 | (particularly GCC 2.95), in which the first line number marker of a | |
7052 | function does not show up until after the prologue, right before | |
7053 | the second line number marker. This function shifts ADDRESS down | |
7054 | to the beginning of the function if necessary, and is called on | |
7055 | addresses passed to record_line. */ | |
7056 | ||
7057 | static CORE_ADDR | |
e142c38c | 7058 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
7059 | { |
7060 | struct function_range *fn; | |
7061 | ||
7062 | /* Find the function_range containing address. */ | |
e142c38c | 7063 | if (!cu->first_fn) |
5fb290d7 DJ |
7064 | return address; |
7065 | ||
e142c38c DJ |
7066 | if (!cu->cached_fn) |
7067 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 7068 | |
e142c38c | 7069 | fn = cu->cached_fn; |
5fb290d7 DJ |
7070 | while (fn) |
7071 | if (fn->lowpc <= address && fn->highpc > address) | |
7072 | goto found; | |
7073 | else | |
7074 | fn = fn->next; | |
7075 | ||
e142c38c DJ |
7076 | fn = cu->first_fn; |
7077 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
7078 | if (fn->lowpc <= address && fn->highpc > address) |
7079 | goto found; | |
7080 | else | |
7081 | fn = fn->next; | |
7082 | ||
7083 | return address; | |
7084 | ||
7085 | found: | |
7086 | if (fn->seen_line) | |
7087 | return address; | |
7088 | if (address != fn->lowpc) | |
4d3c2250 | 7089 | complaint (&symfile_complaints, |
e2e0b3e5 | 7090 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 7091 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
7092 | fn->seen_line = 1; |
7093 | return fn->lowpc; | |
7094 | } | |
7095 | ||
aaa75496 JB |
7096 | /* Decode the Line Number Program (LNP) for the given line_header |
7097 | structure and CU. The actual information extracted and the type | |
7098 | of structures created from the LNP depends on the value of PST. | |
7099 | ||
7100 | 1. If PST is NULL, then this procedure uses the data from the program | |
7101 | to create all necessary symbol tables, and their linetables. | |
7102 | The compilation directory of the file is passed in COMP_DIR, | |
7103 | and must not be NULL. | |
7104 | ||
7105 | 2. If PST is not NULL, this procedure reads the program to determine | |
7106 | the list of files included by the unit represented by PST, and | |
7107 | builds all the associated partial symbol tables. In this case, | |
7108 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
7109 | is not used to compute the full name of the symtab, and therefore | |
7110 | omitting it when building the partial symtab does not introduce | |
7111 | the potential for inconsistency - a partial symtab and its associated | |
7112 | symbtab having a different fullname -). */ | |
debd256d | 7113 | |
c906108c | 7114 | static void |
debd256d | 7115 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 7116 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 7117 | { |
a8c50c1f | 7118 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 7119 | gdb_byte *line_end; |
a8c50c1f | 7120 | unsigned int bytes_read, extended_len; |
c906108c | 7121 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
7122 | CORE_ADDR baseaddr; |
7123 | struct objfile *objfile = cu->objfile; | |
aaa75496 | 7124 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 7125 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
e142c38c DJ |
7126 | |
7127 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 7128 | |
debd256d JB |
7129 | line_ptr = lh->statement_program_start; |
7130 | line_end = lh->statement_program_end; | |
c906108c SS |
7131 | |
7132 | /* Read the statement sequences until there's nothing left. */ | |
7133 | while (line_ptr < line_end) | |
7134 | { | |
7135 | /* state machine registers */ | |
7136 | CORE_ADDR address = 0; | |
7137 | unsigned int file = 1; | |
7138 | unsigned int line = 1; | |
7139 | unsigned int column = 0; | |
debd256d | 7140 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
7141 | int basic_block = 0; |
7142 | int end_sequence = 0; | |
7143 | ||
aaa75496 | 7144 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 7145 | { |
aaa75496 | 7146 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
7147 | /* lh->include_dirs and lh->file_names are 0-based, but the |
7148 | directory and file name numbers in the statement program | |
7149 | are 1-based. */ | |
7150 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 7151 | char *dir = NULL; |
a738430d | 7152 | |
debd256d JB |
7153 | if (fe->dir_index) |
7154 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
7155 | |
7156 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
7157 | } |
7158 | ||
a738430d | 7159 | /* Decode the table. */ |
c5aa993b | 7160 | while (!end_sequence) |
c906108c SS |
7161 | { |
7162 | op_code = read_1_byte (abfd, line_ptr); | |
7163 | line_ptr += 1; | |
59205f5a JB |
7164 | if (line_ptr > line_end) |
7165 | { | |
7166 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
7167 | break; | |
7168 | } | |
9aa1fe7e | 7169 | |
debd256d | 7170 | if (op_code >= lh->opcode_base) |
a738430d MK |
7171 | { |
7172 | /* Special operand. */ | |
debd256d JB |
7173 | adj_opcode = op_code - lh->opcode_base; |
7174 | address += (adj_opcode / lh->line_range) | |
7175 | * lh->minimum_instruction_length; | |
7176 | line += lh->line_base + (adj_opcode % lh->line_range); | |
59205f5a | 7177 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
7178 | dwarf2_debug_line_missing_file_complaint (); |
7179 | else | |
7180 | { | |
7181 | lh->file_names[file - 1].included_p = 1; | |
7182 | if (!decode_for_pst_p) | |
7183 | { | |
7184 | if (last_subfile != current_subfile) | |
7185 | { | |
7186 | if (last_subfile) | |
7187 | record_line (last_subfile, 0, address); | |
7188 | last_subfile = current_subfile; | |
7189 | } | |
7190 | /* Append row to matrix using current values. */ | |
7191 | record_line (current_subfile, line, | |
7192 | check_cu_functions (address, cu)); | |
366da635 | 7193 | } |
25e43795 | 7194 | } |
9aa1fe7e GK |
7195 | basic_block = 1; |
7196 | } | |
7197 | else switch (op_code) | |
c906108c SS |
7198 | { |
7199 | case DW_LNS_extended_op: | |
a8c50c1f | 7200 | extended_len = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
473b7be6 | 7201 | line_ptr += bytes_read; |
a8c50c1f | 7202 | extended_end = line_ptr + extended_len; |
c906108c SS |
7203 | extended_op = read_1_byte (abfd, line_ptr); |
7204 | line_ptr += 1; | |
7205 | switch (extended_op) | |
7206 | { | |
7207 | case DW_LNE_end_sequence: | |
7208 | end_sequence = 1; | |
c906108c SS |
7209 | break; |
7210 | case DW_LNE_set_address: | |
e7c27a73 | 7211 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
7212 | line_ptr += bytes_read; |
7213 | address += baseaddr; | |
c906108c SS |
7214 | break; |
7215 | case DW_LNE_define_file: | |
debd256d JB |
7216 | { |
7217 | char *cur_file; | |
7218 | unsigned int dir_index, mod_time, length; | |
7219 | ||
7220 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
7221 | line_ptr += bytes_read; | |
7222 | dir_index = | |
7223 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7224 | line_ptr += bytes_read; | |
7225 | mod_time = | |
7226 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7227 | line_ptr += bytes_read; | |
7228 | length = | |
7229 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7230 | line_ptr += bytes_read; | |
7231 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
7232 | } | |
c906108c SS |
7233 | break; |
7234 | default: | |
4d3c2250 | 7235 | complaint (&symfile_complaints, |
e2e0b3e5 | 7236 | _("mangled .debug_line section")); |
debd256d | 7237 | return; |
c906108c | 7238 | } |
a8c50c1f DJ |
7239 | /* Make sure that we parsed the extended op correctly. If e.g. |
7240 | we expected a different address size than the producer used, | |
7241 | we may have read the wrong number of bytes. */ | |
7242 | if (line_ptr != extended_end) | |
7243 | { | |
7244 | complaint (&symfile_complaints, | |
7245 | _("mangled .debug_line section")); | |
7246 | return; | |
7247 | } | |
c906108c SS |
7248 | break; |
7249 | case DW_LNS_copy: | |
59205f5a | 7250 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
7251 | dwarf2_debug_line_missing_file_complaint (); |
7252 | else | |
366da635 | 7253 | { |
25e43795 DJ |
7254 | lh->file_names[file - 1].included_p = 1; |
7255 | if (!decode_for_pst_p) | |
7256 | { | |
7257 | if (last_subfile != current_subfile) | |
7258 | { | |
7259 | if (last_subfile) | |
7260 | record_line (last_subfile, 0, address); | |
7261 | last_subfile = current_subfile; | |
7262 | } | |
7263 | record_line (current_subfile, line, | |
7264 | check_cu_functions (address, cu)); | |
7265 | } | |
366da635 | 7266 | } |
c906108c SS |
7267 | basic_block = 0; |
7268 | break; | |
7269 | case DW_LNS_advance_pc: | |
debd256d | 7270 | address += lh->minimum_instruction_length |
c906108c SS |
7271 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
7272 | line_ptr += bytes_read; | |
7273 | break; | |
7274 | case DW_LNS_advance_line: | |
7275 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
7276 | line_ptr += bytes_read; | |
7277 | break; | |
7278 | case DW_LNS_set_file: | |
debd256d | 7279 | { |
a738430d MK |
7280 | /* The arrays lh->include_dirs and lh->file_names are |
7281 | 0-based, but the directory and file name numbers in | |
7282 | the statement program are 1-based. */ | |
debd256d | 7283 | struct file_entry *fe; |
4f1520fb | 7284 | char *dir = NULL; |
a738430d | 7285 | |
debd256d JB |
7286 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
7287 | line_ptr += bytes_read; | |
59205f5a | 7288 | if (lh->num_file_names < file || file == 0) |
25e43795 DJ |
7289 | dwarf2_debug_line_missing_file_complaint (); |
7290 | else | |
7291 | { | |
7292 | fe = &lh->file_names[file - 1]; | |
7293 | if (fe->dir_index) | |
7294 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7295 | if (!decode_for_pst_p) | |
7296 | { | |
7297 | last_subfile = current_subfile; | |
7298 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
7299 | } | |
7300 | } | |
debd256d | 7301 | } |
c906108c SS |
7302 | break; |
7303 | case DW_LNS_set_column: | |
7304 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7305 | line_ptr += bytes_read; | |
7306 | break; | |
7307 | case DW_LNS_negate_stmt: | |
7308 | is_stmt = (!is_stmt); | |
7309 | break; | |
7310 | case DW_LNS_set_basic_block: | |
7311 | basic_block = 1; | |
7312 | break; | |
c2c6d25f JM |
7313 | /* Add to the address register of the state machine the |
7314 | address increment value corresponding to special opcode | |
a738430d MK |
7315 | 255. I.e., this value is scaled by the minimum |
7316 | instruction length since special opcode 255 would have | |
7317 | scaled the the increment. */ | |
c906108c | 7318 | case DW_LNS_const_add_pc: |
debd256d JB |
7319 | address += (lh->minimum_instruction_length |
7320 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
7321 | break; |
7322 | case DW_LNS_fixed_advance_pc: | |
7323 | address += read_2_bytes (abfd, line_ptr); | |
7324 | line_ptr += 2; | |
7325 | break; | |
9aa1fe7e | 7326 | default: |
a738430d MK |
7327 | { |
7328 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 7329 | int i; |
a738430d | 7330 | |
debd256d | 7331 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
7332 | { |
7333 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7334 | line_ptr += bytes_read; | |
7335 | } | |
7336 | } | |
c906108c SS |
7337 | } |
7338 | } | |
59205f5a JB |
7339 | if (lh->num_file_names < file || file == 0) |
7340 | dwarf2_debug_line_missing_file_complaint (); | |
7341 | else | |
7342 | { | |
7343 | lh->file_names[file - 1].included_p = 1; | |
7344 | if (!decode_for_pst_p) | |
7345 | record_line (current_subfile, 0, address); | |
7346 | } | |
c906108c | 7347 | } |
aaa75496 JB |
7348 | |
7349 | if (decode_for_pst_p) | |
7350 | { | |
7351 | int file_index; | |
7352 | ||
7353 | /* Now that we're done scanning the Line Header Program, we can | |
7354 | create the psymtab of each included file. */ | |
7355 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
7356 | if (lh->file_names[file_index].included_p == 1) | |
7357 | { | |
5b5464ad JB |
7358 | const struct file_entry fe = lh->file_names [file_index]; |
7359 | char *include_name = fe.name; | |
7360 | char *dir_name = NULL; | |
7361 | char *pst_filename = pst->filename; | |
7362 | ||
7363 | if (fe.dir_index) | |
7364 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
7365 | ||
7366 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
7367 | { | |
1754f103 MK |
7368 | include_name = concat (dir_name, SLASH_STRING, |
7369 | include_name, (char *)NULL); | |
5b5464ad JB |
7370 | make_cleanup (xfree, include_name); |
7371 | } | |
7372 | ||
7373 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
7374 | { | |
1754f103 MK |
7375 | pst_filename = concat (pst->dirname, SLASH_STRING, |
7376 | pst_filename, (char *)NULL); | |
5b5464ad JB |
7377 | make_cleanup (xfree, pst_filename); |
7378 | } | |
7379 | ||
7380 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
7381 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
7382 | } | |
7383 | } | |
cb1df416 DJ |
7384 | else |
7385 | { | |
7386 | /* Make sure a symtab is created for every file, even files | |
7387 | which contain only variables (i.e. no code with associated | |
7388 | line numbers). */ | |
7389 | ||
7390 | int i; | |
7391 | struct file_entry *fe; | |
7392 | ||
7393 | for (i = 0; i < lh->num_file_names; i++) | |
7394 | { | |
7395 | char *dir = NULL; | |
7396 | fe = &lh->file_names[i]; | |
7397 | if (fe->dir_index) | |
7398 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7399 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
7400 | ||
7401 | /* Skip the main file; we don't need it, and it must be | |
7402 | allocated last, so that it will show up before the | |
7403 | non-primary symtabs in the objfile's symtab list. */ | |
7404 | if (current_subfile == first_subfile) | |
7405 | continue; | |
7406 | ||
7407 | if (current_subfile->symtab == NULL) | |
7408 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
7409 | cu->objfile); | |
7410 | fe->symtab = current_subfile->symtab; | |
7411 | } | |
7412 | } | |
c906108c SS |
7413 | } |
7414 | ||
7415 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
7416 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
7417 | or NULL if not known. COMP_DIR is the compilation directory for the |
7418 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
7419 | This routine tries to keep line numbers from identical absolute and |
7420 | relative file names in a common subfile. | |
7421 | ||
7422 | Using the `list' example from the GDB testsuite, which resides in | |
7423 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
7424 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
7425 | ||
c5aa993b JM |
7426 | DW_AT_name: /srcdir/list0.c |
7427 | DW_AT_comp_dir: /compdir | |
357e46e7 | 7428 | files.files[0].name: list0.h |
c5aa993b | 7429 | files.files[0].dir: /srcdir |
357e46e7 | 7430 | files.files[1].name: list0.c |
c5aa993b | 7431 | files.files[1].dir: /srcdir |
c906108c SS |
7432 | |
7433 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
7434 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
7435 | start_subfile will ensure that this happens provided that we pass the | |
7436 | concatenation of files.files[1].dir and files.files[1].name as the | |
7437 | subfile's name. */ | |
c906108c SS |
7438 | |
7439 | static void | |
4f1520fb | 7440 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 7441 | { |
4f1520fb FR |
7442 | char *fullname; |
7443 | ||
7444 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
7445 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
7446 | second argument to start_subfile. To be consistent, we do the | |
7447 | same here. In order not to lose the line information directory, | |
7448 | we concatenate it to the filename when it makes sense. | |
7449 | Note that the Dwarf3 standard says (speaking of filenames in line | |
7450 | information): ``The directory index is ignored for file names | |
7451 | that represent full path names''. Thus ignoring dirname in the | |
7452 | `else' branch below isn't an issue. */ | |
c906108c | 7453 | |
d5166ae1 | 7454 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
7455 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
7456 | else | |
7457 | fullname = filename; | |
c906108c | 7458 | |
4f1520fb FR |
7459 | start_subfile (fullname, comp_dir); |
7460 | ||
7461 | if (fullname != filename) | |
7462 | xfree (fullname); | |
c906108c SS |
7463 | } |
7464 | ||
4c2df51b DJ |
7465 | static void |
7466 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 7467 | struct dwarf2_cu *cu) |
4c2df51b | 7468 | { |
e7c27a73 DJ |
7469 | struct objfile *objfile = cu->objfile; |
7470 | struct comp_unit_head *cu_header = &cu->header; | |
7471 | ||
4c2df51b DJ |
7472 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
7473 | code here to turn a symbol with DW_AT_external and a | |
7474 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
7475 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
7476 | with some versions of binutils) where shared libraries could have | |
7477 | relocations against symbols in their debug information - the | |
7478 | minimal symbol would have the right address, but the debug info | |
7479 | would not. It's no longer necessary, because we will explicitly | |
7480 | apply relocations when we read in the debug information now. */ | |
7481 | ||
7482 | /* A DW_AT_location attribute with no contents indicates that a | |
7483 | variable has been optimized away. */ | |
7484 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
7485 | { | |
7486 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
7487 | return; | |
7488 | } | |
7489 | ||
7490 | /* Handle one degenerate form of location expression specially, to | |
7491 | preserve GDB's previous behavior when section offsets are | |
7492 | specified. If this is just a DW_OP_addr then mark this symbol | |
7493 | as LOC_STATIC. */ | |
7494 | ||
7495 | if (attr_form_is_block (attr) | |
7496 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
7497 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
7498 | { | |
891d2f0b | 7499 | unsigned int dummy; |
4c2df51b DJ |
7500 | |
7501 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 7502 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
907fc202 | 7503 | SYMBOL_CLASS (sym) = LOC_STATIC; |
4c2df51b DJ |
7504 | fixup_symbol_section (sym, objfile); |
7505 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
7506 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
7507 | return; |
7508 | } | |
7509 | ||
7510 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
7511 | expression evaluator, and use LOC_COMPUTED only when necessary | |
7512 | (i.e. when the value of a register or memory location is | |
7513 | referenced, or a thread-local block, etc.). Then again, it might | |
7514 | not be worthwhile. I'm assuming that it isn't unless performance | |
7515 | or memory numbers show me otherwise. */ | |
7516 | ||
e7c27a73 | 7517 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
7518 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
7519 | } | |
7520 | ||
c906108c SS |
7521 | /* Given a pointer to a DWARF information entry, figure out if we need |
7522 | to make a symbol table entry for it, and if so, create a new entry | |
7523 | and return a pointer to it. | |
7524 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 7525 | used the passed type. */ |
c906108c SS |
7526 | |
7527 | static struct symbol * | |
e7c27a73 | 7528 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 7529 | { |
e7c27a73 | 7530 | struct objfile *objfile = cu->objfile; |
5e2b427d | 7531 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
7532 | struct symbol *sym = NULL; |
7533 | char *name; | |
7534 | struct attribute *attr = NULL; | |
7535 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
7536 | CORE_ADDR baseaddr; |
7537 | ||
7538 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 7539 | |
5c4e30ca | 7540 | if (die->tag != DW_TAG_namespace) |
e142c38c | 7541 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
7542 | else |
7543 | name = TYPE_NAME (type); | |
7544 | ||
c906108c SS |
7545 | if (name) |
7546 | { | |
4a146b47 | 7547 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
7548 | sizeof (struct symbol)); |
7549 | OBJSTAT (objfile, n_syms++); | |
7550 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
7551 | |
7552 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 7553 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 7554 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
7555 | |
7556 | /* Default assumptions. | |
c5aa993b | 7557 | Use the passed type or decode it from the die. */ |
176620f1 | 7558 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 7559 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
7560 | if (type != NULL) |
7561 | SYMBOL_TYPE (sym) = type; | |
7562 | else | |
e7c27a73 | 7563 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 7564 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
7565 | if (attr) |
7566 | { | |
7567 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
7568 | } | |
cb1df416 DJ |
7569 | |
7570 | attr = dwarf2_attr (die, DW_AT_decl_file, cu); | |
7571 | if (attr) | |
7572 | { | |
7573 | int file_index = DW_UNSND (attr); | |
7574 | if (cu->line_header == NULL | |
7575 | || file_index > cu->line_header->num_file_names) | |
7576 | complaint (&symfile_complaints, | |
7577 | _("file index out of range")); | |
1c3d648d | 7578 | else if (file_index > 0) |
cb1df416 DJ |
7579 | { |
7580 | struct file_entry *fe; | |
7581 | fe = &cu->line_header->file_names[file_index - 1]; | |
7582 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
7583 | } | |
7584 | } | |
7585 | ||
c906108c SS |
7586 | switch (die->tag) |
7587 | { | |
7588 | case DW_TAG_label: | |
e142c38c | 7589 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
7590 | if (attr) |
7591 | { | |
7592 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
7593 | } | |
7594 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
7595 | break; | |
7596 | case DW_TAG_subprogram: | |
7597 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
7598 | finish_block. */ | |
7599 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 7600 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
7601 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
7602 | || cu->language == language_ada) | |
c906108c | 7603 | { |
2cfa0c8d JB |
7604 | /* Subprograms marked external are stored as a global symbol. |
7605 | Ada subprograms, whether marked external or not, are always | |
7606 | stored as a global symbol, because we want to be able to | |
7607 | access them globally. For instance, we want to be able | |
7608 | to break on a nested subprogram without having to | |
7609 | specify the context. */ | |
c906108c SS |
7610 | add_symbol_to_list (sym, &global_symbols); |
7611 | } | |
7612 | else | |
7613 | { | |
e142c38c | 7614 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7615 | } |
7616 | break; | |
7617 | case DW_TAG_variable: | |
7618 | /* Compilation with minimal debug info may result in variables | |
7619 | with missing type entries. Change the misleading `void' type | |
7620 | to something sensible. */ | |
7621 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
64c50499 | 7622 | SYMBOL_TYPE (sym) |
5e2b427d | 7623 | = builtin_type (gdbarch)->nodebug_data_symbol; |
64c50499 | 7624 | |
e142c38c | 7625 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7626 | if (attr) |
7627 | { | |
e7c27a73 | 7628 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 7629 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
7630 | if (attr2 && (DW_UNSND (attr2) != 0)) |
7631 | add_symbol_to_list (sym, &global_symbols); | |
7632 | else | |
e142c38c | 7633 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7634 | break; |
7635 | } | |
e142c38c | 7636 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7637 | if (attr) |
7638 | { | |
e7c27a73 | 7639 | var_decode_location (attr, sym, cu); |
e142c38c | 7640 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7641 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 7642 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 7643 | else |
e142c38c | 7644 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7645 | } |
7646 | else | |
7647 | { | |
7648 | /* We do not know the address of this symbol. | |
c5aa993b JM |
7649 | If it is an external symbol and we have type information |
7650 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
7651 | The address of the variable will then be determined from | |
7652 | the minimal symbol table whenever the variable is | |
7653 | referenced. */ | |
e142c38c | 7654 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7655 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 7656 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
7657 | { |
7658 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
7659 | add_symbol_to_list (sym, &global_symbols); | |
7660 | } | |
7661 | } | |
7662 | break; | |
7663 | case DW_TAG_formal_parameter: | |
2a2d4dc3 | 7664 | SYMBOL_IS_ARGUMENT (sym) = 1; |
e142c38c | 7665 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7666 | if (attr) |
7667 | { | |
e7c27a73 | 7668 | var_decode_location (attr, sym, cu); |
c906108c | 7669 | } |
e142c38c | 7670 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7671 | if (attr) |
7672 | { | |
e7c27a73 | 7673 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7674 | } |
e142c38c | 7675 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7676 | break; |
7677 | case DW_TAG_unspecified_parameters: | |
7678 | /* From varargs functions; gdb doesn't seem to have any | |
7679 | interest in this information, so just ignore it for now. | |
7680 | (FIXME?) */ | |
7681 | break; | |
7682 | case DW_TAG_class_type: | |
680b30c7 | 7683 | case DW_TAG_interface_type: |
c906108c SS |
7684 | case DW_TAG_structure_type: |
7685 | case DW_TAG_union_type: | |
72019c9c | 7686 | case DW_TAG_set_type: |
c906108c SS |
7687 | case DW_TAG_enumeration_type: |
7688 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 7689 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 7690 | |
63d06c5c DC |
7691 | /* Make sure that the symbol includes appropriate enclosing |
7692 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 7693 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
7694 | the type. */ |
7695 | ||
987504bb JJ |
7696 | if (cu->language == language_cplus |
7697 | || cu->language == language_java) | |
c906108c | 7698 | { |
63d06c5c DC |
7699 | struct type *type = SYMBOL_TYPE (sym); |
7700 | ||
7701 | if (TYPE_TAG_NAME (type) != NULL) | |
7702 | { | |
7703 | /* FIXME: carlton/2003-11-10: Should this use | |
7704 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
7705 | arises further down in this function.) */ |
7706 | /* The type's name is already allocated along with | |
7707 | this objfile, so we don't need to duplicate it | |
7708 | for the symbol. */ | |
7709 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 7710 | } |
c906108c | 7711 | } |
63d06c5c DC |
7712 | |
7713 | { | |
987504bb | 7714 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
7715 | really ever be static objects: otherwise, if you try |
7716 | to, say, break of a class's method and you're in a file | |
7717 | which doesn't mention that class, it won't work unless | |
7718 | the check for all static symbols in lookup_symbol_aux | |
7719 | saves you. See the OtherFileClass tests in | |
7720 | gdb.c++/namespace.exp. */ | |
7721 | ||
7722 | struct pending **list_to_add; | |
7723 | ||
e142c38c | 7724 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7725 | && (cu->language == language_cplus |
7726 | || cu->language == language_java) | |
e142c38c | 7727 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7728 | |
7729 | add_symbol_to_list (sym, list_to_add); | |
7730 | ||
7731 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb | 7732 | defines a typedef for "foo". A Java class declaration also |
5eeb2539 | 7733 | defines a typedef for the class. */ |
987504bb | 7734 | if (cu->language == language_cplus |
8c6860bb JB |
7735 | || cu->language == language_java |
7736 | || cu->language == language_ada) | |
63d06c5c | 7737 | { |
d8151005 DJ |
7738 | /* The symbol's name is already allocated along with |
7739 | this objfile, so we don't need to duplicate it for | |
7740 | the type. */ | |
63d06c5c | 7741 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 7742 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
7743 | } |
7744 | } | |
c906108c SS |
7745 | break; |
7746 | case DW_TAG_typedef: | |
0114d602 | 7747 | SYMBOL_LINKAGE_NAME (sym) = (char *) dwarf2_full_name (die, cu); |
63d06c5c DC |
7748 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
7749 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 7750 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 7751 | break; |
c906108c | 7752 | case DW_TAG_base_type: |
a02abb62 | 7753 | case DW_TAG_subrange_type: |
c906108c | 7754 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 7755 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 7756 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7757 | break; |
7758 | case DW_TAG_enumerator: | |
0114d602 | 7759 | SYMBOL_LINKAGE_NAME (sym) = (char *) dwarf2_full_name (die, cu); |
e142c38c | 7760 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7761 | if (attr) |
7762 | { | |
e7c27a73 | 7763 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7764 | } |
63d06c5c DC |
7765 | { |
7766 | /* NOTE: carlton/2003-11-10: See comment above in the | |
7767 | DW_TAG_class_type, etc. block. */ | |
7768 | ||
7769 | struct pending **list_to_add; | |
7770 | ||
e142c38c | 7771 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7772 | && (cu->language == language_cplus |
7773 | || cu->language == language_java) | |
e142c38c | 7774 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7775 | |
7776 | add_symbol_to_list (sym, list_to_add); | |
7777 | } | |
c906108c | 7778 | break; |
5c4e30ca DC |
7779 | case DW_TAG_namespace: |
7780 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7781 | add_symbol_to_list (sym, &global_symbols); | |
7782 | break; | |
c906108c SS |
7783 | default: |
7784 | /* Not a tag we recognize. Hopefully we aren't processing | |
7785 | trash data, but since we must specifically ignore things | |
7786 | we don't recognize, there is nothing else we should do at | |
7787 | this point. */ | |
e2e0b3e5 | 7788 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 7789 | dwarf_tag_name (die->tag)); |
c906108c SS |
7790 | break; |
7791 | } | |
df8a16a1 DJ |
7792 | |
7793 | /* For the benefit of old versions of GCC, check for anonymous | |
7794 | namespaces based on the demangled name. */ | |
7795 | if (!processing_has_namespace_info | |
7796 | && cu->language == language_cplus | |
7797 | && dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu) != NULL) | |
7798 | cp_scan_for_anonymous_namespaces (sym); | |
c906108c SS |
7799 | } |
7800 | return (sym); | |
7801 | } | |
7802 | ||
7803 | /* Copy constant value from an attribute to a symbol. */ | |
7804 | ||
7805 | static void | |
107d2387 | 7806 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 7807 | struct dwarf2_cu *cu) |
c906108c | 7808 | { |
e7c27a73 DJ |
7809 | struct objfile *objfile = cu->objfile; |
7810 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7811 | struct dwarf_block *blk; |
7812 | ||
7813 | switch (attr->form) | |
7814 | { | |
7815 | case DW_FORM_addr: | |
107d2387 | 7816 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
3567439c | 7817 | dwarf2_const_value_length_mismatch_complaint (SYMBOL_PRINT_NAME (sym), |
4d3c2250 KB |
7818 | cu_header->addr_size, |
7819 | TYPE_LENGTH (SYMBOL_TYPE | |
7820 | (sym))); | |
4e38b386 | 7821 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7822 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
7823 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
7824 | it's body - store_unsigned_integer. */ | |
7825 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
7826 | DW_ADDR (attr)); | |
c906108c SS |
7827 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
7828 | break; | |
93b5768b PA |
7829 | case DW_FORM_strp: |
7830 | /* DW_STRING is already allocated on the obstack, point directly | |
7831 | to it. */ | |
7832 | SYMBOL_VALUE_BYTES (sym) = (gdb_byte *) DW_STRING (attr); | |
7833 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7834 | break; | |
c906108c SS |
7835 | case DW_FORM_block1: |
7836 | case DW_FORM_block2: | |
7837 | case DW_FORM_block4: | |
7838 | case DW_FORM_block: | |
7839 | blk = DW_BLOCK (attr); | |
7840 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
3567439c | 7841 | dwarf2_const_value_length_mismatch_complaint (SYMBOL_PRINT_NAME (sym), |
4d3c2250 KB |
7842 | blk->size, |
7843 | TYPE_LENGTH (SYMBOL_TYPE | |
7844 | (sym))); | |
4e38b386 | 7845 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7846 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
7847 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
7848 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7849 | break; | |
2df3850c JM |
7850 | |
7851 | /* The DW_AT_const_value attributes are supposed to carry the | |
7852 | symbol's value "represented as it would be on the target | |
7853 | architecture." By the time we get here, it's already been | |
7854 | converted to host endianness, so we just need to sign- or | |
7855 | zero-extend it as appropriate. */ | |
7856 | case DW_FORM_data1: | |
7857 | dwarf2_const_value_data (attr, sym, 8); | |
7858 | break; | |
c906108c | 7859 | case DW_FORM_data2: |
2df3850c JM |
7860 | dwarf2_const_value_data (attr, sym, 16); |
7861 | break; | |
c906108c | 7862 | case DW_FORM_data4: |
2df3850c JM |
7863 | dwarf2_const_value_data (attr, sym, 32); |
7864 | break; | |
c906108c | 7865 | case DW_FORM_data8: |
2df3850c JM |
7866 | dwarf2_const_value_data (attr, sym, 64); |
7867 | break; | |
7868 | ||
c906108c | 7869 | case DW_FORM_sdata: |
2df3850c JM |
7870 | SYMBOL_VALUE (sym) = DW_SND (attr); |
7871 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7872 | break; | |
7873 | ||
c906108c SS |
7874 | case DW_FORM_udata: |
7875 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
7876 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7877 | break; | |
2df3850c | 7878 | |
c906108c | 7879 | default: |
4d3c2250 | 7880 | complaint (&symfile_complaints, |
e2e0b3e5 | 7881 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 7882 | dwarf_form_name (attr->form)); |
c906108c SS |
7883 | SYMBOL_VALUE (sym) = 0; |
7884 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7885 | break; | |
7886 | } | |
7887 | } | |
7888 | ||
2df3850c JM |
7889 | |
7890 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
7891 | or zero-extend it as appropriate for the symbol's type. */ | |
7892 | static void | |
7893 | dwarf2_const_value_data (struct attribute *attr, | |
7894 | struct symbol *sym, | |
7895 | int bits) | |
7896 | { | |
7897 | LONGEST l = DW_UNSND (attr); | |
7898 | ||
7899 | if (bits < sizeof (l) * 8) | |
7900 | { | |
7901 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
7902 | l &= ((LONGEST) 1 << bits) - 1; | |
7903 | else | |
bf9198f1 | 7904 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
7905 | } |
7906 | ||
7907 | SYMBOL_VALUE (sym) = l; | |
7908 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7909 | } | |
7910 | ||
7911 | ||
c906108c SS |
7912 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
7913 | ||
7914 | static struct type * | |
e7c27a73 | 7915 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7916 | { |
5e2b427d | 7917 | struct gdbarch *gdbarch = get_objfile_arch (cu->objfile); |
c906108c SS |
7918 | struct type *type; |
7919 | struct attribute *type_attr; | |
7920 | struct die_info *type_die; | |
c906108c | 7921 | |
e142c38c | 7922 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
7923 | if (!type_attr) |
7924 | { | |
7925 | /* A missing DW_AT_type represents a void type. */ | |
5e2b427d | 7926 | return builtin_type (gdbarch)->builtin_void; |
c906108c SS |
7927 | } |
7928 | else | |
f2f0e013 | 7929 | type_die = follow_die_ref (die, type_attr, &cu); |
10b3939b | 7930 | |
e7c27a73 | 7931 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7932 | if (!type) |
7933 | { | |
d97bc12b | 7934 | dump_die_for_error (type_die); |
8a3fe4f8 | 7935 | error (_("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]"), |
e7c27a73 | 7936 | cu->objfile->name); |
c906108c SS |
7937 | } |
7938 | return type; | |
7939 | } | |
7940 | ||
7941 | /* Return the containing type of the die in question using its | |
7942 | DW_AT_containing_type attribute. */ | |
7943 | ||
7944 | static struct type * | |
e7c27a73 | 7945 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7946 | { |
7947 | struct type *type = NULL; | |
7948 | struct attribute *type_attr; | |
7949 | struct die_info *type_die = NULL; | |
c906108c | 7950 | |
e142c38c | 7951 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
7952 | if (type_attr) |
7953 | { | |
f2f0e013 | 7954 | type_die = follow_die_ref (die, type_attr, &cu); |
e7c27a73 | 7955 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7956 | } |
7957 | if (!type) | |
7958 | { | |
7959 | if (type_die) | |
d97bc12b | 7960 | dump_die_for_error (type_die); |
8a3fe4f8 | 7961 | error (_("Dwarf Error: Problem turning containing type into gdb type [in module %s]"), |
e7c27a73 | 7962 | cu->objfile->name); |
c906108c SS |
7963 | } |
7964 | return type; | |
7965 | } | |
7966 | ||
c906108c | 7967 | static struct type * |
e7c27a73 | 7968 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7969 | { |
f792889a DJ |
7970 | struct type *this_type; |
7971 | ||
7972 | this_type = read_type_die (die, cu); | |
7973 | if (!this_type) | |
c906108c | 7974 | { |
d97bc12b | 7975 | dump_die_for_error (die); |
f792889a DJ |
7976 | error (_("Dwarf Error: Cannot find type of die [in module %s]"), |
7977 | cu->objfile->name); | |
c906108c | 7978 | } |
f792889a | 7979 | return this_type; |
c906108c SS |
7980 | } |
7981 | ||
f792889a | 7982 | static struct type * |
e7c27a73 | 7983 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7984 | { |
f792889a DJ |
7985 | struct type *this_type; |
7986 | ||
7987 | this_type = get_die_type (die, cu); | |
7988 | if (this_type) | |
7989 | return this_type; | |
7990 | ||
c906108c SS |
7991 | switch (die->tag) |
7992 | { | |
7993 | case DW_TAG_class_type: | |
680b30c7 | 7994 | case DW_TAG_interface_type: |
c906108c SS |
7995 | case DW_TAG_structure_type: |
7996 | case DW_TAG_union_type: | |
f792889a | 7997 | this_type = read_structure_type (die, cu); |
c906108c SS |
7998 | break; |
7999 | case DW_TAG_enumeration_type: | |
f792889a | 8000 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
8001 | break; |
8002 | case DW_TAG_subprogram: | |
8003 | case DW_TAG_subroutine_type: | |
f792889a | 8004 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
8005 | break; |
8006 | case DW_TAG_array_type: | |
f792889a | 8007 | this_type = read_array_type (die, cu); |
c906108c | 8008 | break; |
72019c9c | 8009 | case DW_TAG_set_type: |
f792889a | 8010 | this_type = read_set_type (die, cu); |
72019c9c | 8011 | break; |
c906108c | 8012 | case DW_TAG_pointer_type: |
f792889a | 8013 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
8014 | break; |
8015 | case DW_TAG_ptr_to_member_type: | |
f792889a | 8016 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
8017 | break; |
8018 | case DW_TAG_reference_type: | |
f792889a | 8019 | this_type = read_tag_reference_type (die, cu); |
c906108c SS |
8020 | break; |
8021 | case DW_TAG_const_type: | |
f792889a | 8022 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
8023 | break; |
8024 | case DW_TAG_volatile_type: | |
f792889a | 8025 | this_type = read_tag_volatile_type (die, cu); |
c906108c SS |
8026 | break; |
8027 | case DW_TAG_string_type: | |
f792889a | 8028 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
8029 | break; |
8030 | case DW_TAG_typedef: | |
f792889a | 8031 | this_type = read_typedef (die, cu); |
c906108c | 8032 | break; |
a02abb62 | 8033 | case DW_TAG_subrange_type: |
f792889a | 8034 | this_type = read_subrange_type (die, cu); |
a02abb62 | 8035 | break; |
c906108c | 8036 | case DW_TAG_base_type: |
f792889a | 8037 | this_type = read_base_type (die, cu); |
c906108c | 8038 | break; |
81a17f79 | 8039 | case DW_TAG_unspecified_type: |
f792889a | 8040 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 8041 | break; |
0114d602 DJ |
8042 | case DW_TAG_namespace: |
8043 | this_type = read_namespace_type (die, cu); | |
8044 | break; | |
c906108c | 8045 | default: |
a1f5b845 | 8046 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 8047 | dwarf_tag_name (die->tag)); |
c906108c SS |
8048 | break; |
8049 | } | |
63d06c5c | 8050 | |
f792889a | 8051 | return this_type; |
63d06c5c DC |
8052 | } |
8053 | ||
fdde2d81 | 8054 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 8055 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 8056 | |
0114d602 DJ |
8057 | For example, if we're within the method foo() in the following |
8058 | code: | |
8059 | ||
8060 | namespace N { | |
8061 | class C { | |
8062 | void foo () { | |
8063 | } | |
8064 | }; | |
8065 | } | |
8066 | ||
8067 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 DC |
8068 | |
8069 | static char * | |
e142c38c | 8070 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 8071 | { |
0114d602 DJ |
8072 | struct die_info *parent, *spec_die; |
8073 | struct dwarf2_cu *spec_cu; | |
8074 | struct type *parent_type; | |
63d06c5c | 8075 | |
987504bb JJ |
8076 | if (cu->language != language_cplus |
8077 | && cu->language != language_java) | |
0114d602 DJ |
8078 | return ""; |
8079 | ||
8080 | /* We have to be careful in the presence of DW_AT_specification. | |
8081 | For example, with GCC 3.4, given the code | |
8082 | ||
8083 | namespace N { | |
8084 | void foo() { | |
8085 | // Definition of N::foo. | |
8086 | } | |
8087 | } | |
8088 | ||
8089 | then we'll have a tree of DIEs like this: | |
8090 | ||
8091 | 1: DW_TAG_compile_unit | |
8092 | 2: DW_TAG_namespace // N | |
8093 | 3: DW_TAG_subprogram // declaration of N::foo | |
8094 | 4: DW_TAG_subprogram // definition of N::foo | |
8095 | DW_AT_specification // refers to die #3 | |
8096 | ||
8097 | Thus, when processing die #4, we have to pretend that we're in | |
8098 | the context of its DW_AT_specification, namely the contex of die | |
8099 | #3. */ | |
8100 | spec_cu = cu; | |
8101 | spec_die = die_specification (die, &spec_cu); | |
8102 | if (spec_die == NULL) | |
8103 | parent = die->parent; | |
8104 | else | |
63d06c5c | 8105 | { |
0114d602 DJ |
8106 | parent = spec_die->parent; |
8107 | cu = spec_cu; | |
63d06c5c | 8108 | } |
0114d602 DJ |
8109 | |
8110 | if (parent == NULL) | |
8111 | return ""; | |
63d06c5c | 8112 | else |
0114d602 DJ |
8113 | switch (parent->tag) |
8114 | { | |
63d06c5c | 8115 | case DW_TAG_namespace: |
0114d602 DJ |
8116 | parent_type = read_type_die (parent, cu); |
8117 | /* We give a name to even anonymous namespaces. */ | |
8118 | return TYPE_TAG_NAME (parent_type); | |
63d06c5c | 8119 | case DW_TAG_class_type: |
680b30c7 | 8120 | case DW_TAG_interface_type: |
63d06c5c | 8121 | case DW_TAG_structure_type: |
0114d602 DJ |
8122 | case DW_TAG_union_type: |
8123 | parent_type = read_type_die (parent, cu); | |
8124 | if (TYPE_TAG_NAME (parent_type) != NULL) | |
8125 | return TYPE_TAG_NAME (parent_type); | |
8126 | else | |
8127 | /* An anonymous structure is only allowed non-static data | |
8128 | members; no typedefs, no member functions, et cetera. | |
8129 | So it does not need a prefix. */ | |
8130 | return ""; | |
63d06c5c | 8131 | default: |
8176b9b8 | 8132 | return determine_prefix (parent, cu); |
63d06c5c | 8133 | } |
63d06c5c DC |
8134 | } |
8135 | ||
987504bb JJ |
8136 | /* Return a newly-allocated string formed by concatenating PREFIX and |
8137 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
8138 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
8139 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
8140 | is used to determine the language and hence, the appropriate separator. */ | |
8141 | ||
8142 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
8143 | |
8144 | static char * | |
987504bb JJ |
8145 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
8146 | struct dwarf2_cu *cu) | |
63d06c5c | 8147 | { |
987504bb | 8148 | char *sep; |
63d06c5c | 8149 | |
987504bb JJ |
8150 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
8151 | sep = ""; | |
8152 | else if (cu->language == language_java) | |
8153 | sep = "."; | |
8154 | else | |
8155 | sep = "::"; | |
63d06c5c | 8156 | |
6dd47d34 DE |
8157 | if (prefix == NULL) |
8158 | prefix = ""; | |
8159 | if (suffix == NULL) | |
8160 | suffix = ""; | |
8161 | ||
987504bb JJ |
8162 | if (obs == NULL) |
8163 | { | |
8164 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
6dd47d34 DE |
8165 | strcpy (retval, prefix); |
8166 | strcat (retval, sep); | |
8167 | strcat (retval, suffix); | |
63d06c5c DC |
8168 | return retval; |
8169 | } | |
987504bb JJ |
8170 | else |
8171 | { | |
8172 | /* We have an obstack. */ | |
8173 | return obconcat (obs, prefix, sep, suffix); | |
8174 | } | |
63d06c5c DC |
8175 | } |
8176 | ||
c906108c SS |
8177 | /* Return sibling of die, NULL if no sibling. */ |
8178 | ||
f9aca02d | 8179 | static struct die_info * |
fba45db2 | 8180 | sibling_die (struct die_info *die) |
c906108c | 8181 | { |
639d11d3 | 8182 | return die->sibling; |
c906108c SS |
8183 | } |
8184 | ||
8185 | /* Get linkage name of a die, return NULL if not found. */ | |
8186 | ||
8187 | static char * | |
e142c38c | 8188 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
8189 | { |
8190 | struct attribute *attr; | |
8191 | ||
e142c38c | 8192 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
8193 | if (attr && DW_STRING (attr)) |
8194 | return DW_STRING (attr); | |
e142c38c | 8195 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
8196 | if (attr && DW_STRING (attr)) |
8197 | return DW_STRING (attr); | |
8198 | return NULL; | |
8199 | } | |
8200 | ||
9219021c DC |
8201 | /* Get name of a die, return NULL if not found. */ |
8202 | ||
8203 | static char * | |
e142c38c | 8204 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
8205 | { |
8206 | struct attribute *attr; | |
8207 | ||
e142c38c | 8208 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
8209 | if (attr && DW_STRING (attr)) |
8210 | return DW_STRING (attr); | |
8211 | return NULL; | |
8212 | } | |
8213 | ||
8214 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
8215 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
8216 | containing the return value on output. */ | |
9219021c DC |
8217 | |
8218 | static struct die_info * | |
f2f0e013 | 8219 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
8220 | { |
8221 | struct attribute *attr; | |
9219021c | 8222 | |
f2f0e013 | 8223 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
8224 | if (attr == NULL) |
8225 | return NULL; | |
8226 | ||
f2f0e013 | 8227 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
8228 | } |
8229 | ||
c906108c SS |
8230 | /* Convert a DIE tag into its string name. */ |
8231 | ||
8232 | static char * | |
aa1ee363 | 8233 | dwarf_tag_name (unsigned tag) |
c906108c SS |
8234 | { |
8235 | switch (tag) | |
8236 | { | |
8237 | case DW_TAG_padding: | |
8238 | return "DW_TAG_padding"; | |
8239 | case DW_TAG_array_type: | |
8240 | return "DW_TAG_array_type"; | |
8241 | case DW_TAG_class_type: | |
8242 | return "DW_TAG_class_type"; | |
8243 | case DW_TAG_entry_point: | |
8244 | return "DW_TAG_entry_point"; | |
8245 | case DW_TAG_enumeration_type: | |
8246 | return "DW_TAG_enumeration_type"; | |
8247 | case DW_TAG_formal_parameter: | |
8248 | return "DW_TAG_formal_parameter"; | |
8249 | case DW_TAG_imported_declaration: | |
8250 | return "DW_TAG_imported_declaration"; | |
8251 | case DW_TAG_label: | |
8252 | return "DW_TAG_label"; | |
8253 | case DW_TAG_lexical_block: | |
8254 | return "DW_TAG_lexical_block"; | |
8255 | case DW_TAG_member: | |
8256 | return "DW_TAG_member"; | |
8257 | case DW_TAG_pointer_type: | |
8258 | return "DW_TAG_pointer_type"; | |
8259 | case DW_TAG_reference_type: | |
8260 | return "DW_TAG_reference_type"; | |
8261 | case DW_TAG_compile_unit: | |
8262 | return "DW_TAG_compile_unit"; | |
8263 | case DW_TAG_string_type: | |
8264 | return "DW_TAG_string_type"; | |
8265 | case DW_TAG_structure_type: | |
8266 | return "DW_TAG_structure_type"; | |
8267 | case DW_TAG_subroutine_type: | |
8268 | return "DW_TAG_subroutine_type"; | |
8269 | case DW_TAG_typedef: | |
8270 | return "DW_TAG_typedef"; | |
8271 | case DW_TAG_union_type: | |
8272 | return "DW_TAG_union_type"; | |
8273 | case DW_TAG_unspecified_parameters: | |
8274 | return "DW_TAG_unspecified_parameters"; | |
8275 | case DW_TAG_variant: | |
8276 | return "DW_TAG_variant"; | |
8277 | case DW_TAG_common_block: | |
8278 | return "DW_TAG_common_block"; | |
8279 | case DW_TAG_common_inclusion: | |
8280 | return "DW_TAG_common_inclusion"; | |
8281 | case DW_TAG_inheritance: | |
8282 | return "DW_TAG_inheritance"; | |
8283 | case DW_TAG_inlined_subroutine: | |
8284 | return "DW_TAG_inlined_subroutine"; | |
8285 | case DW_TAG_module: | |
8286 | return "DW_TAG_module"; | |
8287 | case DW_TAG_ptr_to_member_type: | |
8288 | return "DW_TAG_ptr_to_member_type"; | |
8289 | case DW_TAG_set_type: | |
8290 | return "DW_TAG_set_type"; | |
8291 | case DW_TAG_subrange_type: | |
8292 | return "DW_TAG_subrange_type"; | |
8293 | case DW_TAG_with_stmt: | |
8294 | return "DW_TAG_with_stmt"; | |
8295 | case DW_TAG_access_declaration: | |
8296 | return "DW_TAG_access_declaration"; | |
8297 | case DW_TAG_base_type: | |
8298 | return "DW_TAG_base_type"; | |
8299 | case DW_TAG_catch_block: | |
8300 | return "DW_TAG_catch_block"; | |
8301 | case DW_TAG_const_type: | |
8302 | return "DW_TAG_const_type"; | |
8303 | case DW_TAG_constant: | |
8304 | return "DW_TAG_constant"; | |
8305 | case DW_TAG_enumerator: | |
8306 | return "DW_TAG_enumerator"; | |
8307 | case DW_TAG_file_type: | |
8308 | return "DW_TAG_file_type"; | |
8309 | case DW_TAG_friend: | |
8310 | return "DW_TAG_friend"; | |
8311 | case DW_TAG_namelist: | |
8312 | return "DW_TAG_namelist"; | |
8313 | case DW_TAG_namelist_item: | |
8314 | return "DW_TAG_namelist_item"; | |
8315 | case DW_TAG_packed_type: | |
8316 | return "DW_TAG_packed_type"; | |
8317 | case DW_TAG_subprogram: | |
8318 | return "DW_TAG_subprogram"; | |
8319 | case DW_TAG_template_type_param: | |
8320 | return "DW_TAG_template_type_param"; | |
8321 | case DW_TAG_template_value_param: | |
8322 | return "DW_TAG_template_value_param"; | |
8323 | case DW_TAG_thrown_type: | |
8324 | return "DW_TAG_thrown_type"; | |
8325 | case DW_TAG_try_block: | |
8326 | return "DW_TAG_try_block"; | |
8327 | case DW_TAG_variant_part: | |
8328 | return "DW_TAG_variant_part"; | |
8329 | case DW_TAG_variable: | |
8330 | return "DW_TAG_variable"; | |
8331 | case DW_TAG_volatile_type: | |
8332 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
8333 | case DW_TAG_dwarf_procedure: |
8334 | return "DW_TAG_dwarf_procedure"; | |
8335 | case DW_TAG_restrict_type: | |
8336 | return "DW_TAG_restrict_type"; | |
8337 | case DW_TAG_interface_type: | |
8338 | return "DW_TAG_interface_type"; | |
8339 | case DW_TAG_namespace: | |
8340 | return "DW_TAG_namespace"; | |
8341 | case DW_TAG_imported_module: | |
8342 | return "DW_TAG_imported_module"; | |
8343 | case DW_TAG_unspecified_type: | |
8344 | return "DW_TAG_unspecified_type"; | |
8345 | case DW_TAG_partial_unit: | |
8346 | return "DW_TAG_partial_unit"; | |
8347 | case DW_TAG_imported_unit: | |
8348 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
8349 | case DW_TAG_condition: |
8350 | return "DW_TAG_condition"; | |
8351 | case DW_TAG_shared_type: | |
8352 | return "DW_TAG_shared_type"; | |
c906108c SS |
8353 | case DW_TAG_MIPS_loop: |
8354 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
8355 | case DW_TAG_HP_array_descriptor: |
8356 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
8357 | case DW_TAG_format_label: |
8358 | return "DW_TAG_format_label"; | |
8359 | case DW_TAG_function_template: | |
8360 | return "DW_TAG_function_template"; | |
8361 | case DW_TAG_class_template: | |
8362 | return "DW_TAG_class_template"; | |
b7619582 GF |
8363 | case DW_TAG_GNU_BINCL: |
8364 | return "DW_TAG_GNU_BINCL"; | |
8365 | case DW_TAG_GNU_EINCL: | |
8366 | return "DW_TAG_GNU_EINCL"; | |
8367 | case DW_TAG_upc_shared_type: | |
8368 | return "DW_TAG_upc_shared_type"; | |
8369 | case DW_TAG_upc_strict_type: | |
8370 | return "DW_TAG_upc_strict_type"; | |
8371 | case DW_TAG_upc_relaxed_type: | |
8372 | return "DW_TAG_upc_relaxed_type"; | |
8373 | case DW_TAG_PGI_kanji_type: | |
8374 | return "DW_TAG_PGI_kanji_type"; | |
8375 | case DW_TAG_PGI_interface_block: | |
8376 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
8377 | default: |
8378 | return "DW_TAG_<unknown>"; | |
8379 | } | |
8380 | } | |
8381 | ||
8382 | /* Convert a DWARF attribute code into its string name. */ | |
8383 | ||
8384 | static char * | |
aa1ee363 | 8385 | dwarf_attr_name (unsigned attr) |
c906108c SS |
8386 | { |
8387 | switch (attr) | |
8388 | { | |
8389 | case DW_AT_sibling: | |
8390 | return "DW_AT_sibling"; | |
8391 | case DW_AT_location: | |
8392 | return "DW_AT_location"; | |
8393 | case DW_AT_name: | |
8394 | return "DW_AT_name"; | |
8395 | case DW_AT_ordering: | |
8396 | return "DW_AT_ordering"; | |
8397 | case DW_AT_subscr_data: | |
8398 | return "DW_AT_subscr_data"; | |
8399 | case DW_AT_byte_size: | |
8400 | return "DW_AT_byte_size"; | |
8401 | case DW_AT_bit_offset: | |
8402 | return "DW_AT_bit_offset"; | |
8403 | case DW_AT_bit_size: | |
8404 | return "DW_AT_bit_size"; | |
8405 | case DW_AT_element_list: | |
8406 | return "DW_AT_element_list"; | |
8407 | case DW_AT_stmt_list: | |
8408 | return "DW_AT_stmt_list"; | |
8409 | case DW_AT_low_pc: | |
8410 | return "DW_AT_low_pc"; | |
8411 | case DW_AT_high_pc: | |
8412 | return "DW_AT_high_pc"; | |
8413 | case DW_AT_language: | |
8414 | return "DW_AT_language"; | |
8415 | case DW_AT_member: | |
8416 | return "DW_AT_member"; | |
8417 | case DW_AT_discr: | |
8418 | return "DW_AT_discr"; | |
8419 | case DW_AT_discr_value: | |
8420 | return "DW_AT_discr_value"; | |
8421 | case DW_AT_visibility: | |
8422 | return "DW_AT_visibility"; | |
8423 | case DW_AT_import: | |
8424 | return "DW_AT_import"; | |
8425 | case DW_AT_string_length: | |
8426 | return "DW_AT_string_length"; | |
8427 | case DW_AT_common_reference: | |
8428 | return "DW_AT_common_reference"; | |
8429 | case DW_AT_comp_dir: | |
8430 | return "DW_AT_comp_dir"; | |
8431 | case DW_AT_const_value: | |
8432 | return "DW_AT_const_value"; | |
8433 | case DW_AT_containing_type: | |
8434 | return "DW_AT_containing_type"; | |
8435 | case DW_AT_default_value: | |
8436 | return "DW_AT_default_value"; | |
8437 | case DW_AT_inline: | |
8438 | return "DW_AT_inline"; | |
8439 | case DW_AT_is_optional: | |
8440 | return "DW_AT_is_optional"; | |
8441 | case DW_AT_lower_bound: | |
8442 | return "DW_AT_lower_bound"; | |
8443 | case DW_AT_producer: | |
8444 | return "DW_AT_producer"; | |
8445 | case DW_AT_prototyped: | |
8446 | return "DW_AT_prototyped"; | |
8447 | case DW_AT_return_addr: | |
8448 | return "DW_AT_return_addr"; | |
8449 | case DW_AT_start_scope: | |
8450 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
8451 | case DW_AT_bit_stride: |
8452 | return "DW_AT_bit_stride"; | |
c906108c SS |
8453 | case DW_AT_upper_bound: |
8454 | return "DW_AT_upper_bound"; | |
8455 | case DW_AT_abstract_origin: | |
8456 | return "DW_AT_abstract_origin"; | |
8457 | case DW_AT_accessibility: | |
8458 | return "DW_AT_accessibility"; | |
8459 | case DW_AT_address_class: | |
8460 | return "DW_AT_address_class"; | |
8461 | case DW_AT_artificial: | |
8462 | return "DW_AT_artificial"; | |
8463 | case DW_AT_base_types: | |
8464 | return "DW_AT_base_types"; | |
8465 | case DW_AT_calling_convention: | |
8466 | return "DW_AT_calling_convention"; | |
8467 | case DW_AT_count: | |
8468 | return "DW_AT_count"; | |
8469 | case DW_AT_data_member_location: | |
8470 | return "DW_AT_data_member_location"; | |
8471 | case DW_AT_decl_column: | |
8472 | return "DW_AT_decl_column"; | |
8473 | case DW_AT_decl_file: | |
8474 | return "DW_AT_decl_file"; | |
8475 | case DW_AT_decl_line: | |
8476 | return "DW_AT_decl_line"; | |
8477 | case DW_AT_declaration: | |
8478 | return "DW_AT_declaration"; | |
8479 | case DW_AT_discr_list: | |
8480 | return "DW_AT_discr_list"; | |
8481 | case DW_AT_encoding: | |
8482 | return "DW_AT_encoding"; | |
8483 | case DW_AT_external: | |
8484 | return "DW_AT_external"; | |
8485 | case DW_AT_frame_base: | |
8486 | return "DW_AT_frame_base"; | |
8487 | case DW_AT_friend: | |
8488 | return "DW_AT_friend"; | |
8489 | case DW_AT_identifier_case: | |
8490 | return "DW_AT_identifier_case"; | |
8491 | case DW_AT_macro_info: | |
8492 | return "DW_AT_macro_info"; | |
8493 | case DW_AT_namelist_items: | |
8494 | return "DW_AT_namelist_items"; | |
8495 | case DW_AT_priority: | |
8496 | return "DW_AT_priority"; | |
8497 | case DW_AT_segment: | |
8498 | return "DW_AT_segment"; | |
8499 | case DW_AT_specification: | |
8500 | return "DW_AT_specification"; | |
8501 | case DW_AT_static_link: | |
8502 | return "DW_AT_static_link"; | |
8503 | case DW_AT_type: | |
8504 | return "DW_AT_type"; | |
8505 | case DW_AT_use_location: | |
8506 | return "DW_AT_use_location"; | |
8507 | case DW_AT_variable_parameter: | |
8508 | return "DW_AT_variable_parameter"; | |
8509 | case DW_AT_virtuality: | |
8510 | return "DW_AT_virtuality"; | |
8511 | case DW_AT_vtable_elem_location: | |
8512 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 8513 | /* DWARF 3 values. */ |
d9fa45fe DC |
8514 | case DW_AT_allocated: |
8515 | return "DW_AT_allocated"; | |
8516 | case DW_AT_associated: | |
8517 | return "DW_AT_associated"; | |
8518 | case DW_AT_data_location: | |
8519 | return "DW_AT_data_location"; | |
09fa0d7c JK |
8520 | case DW_AT_byte_stride: |
8521 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
8522 | case DW_AT_entry_pc: |
8523 | return "DW_AT_entry_pc"; | |
8524 | case DW_AT_use_UTF8: | |
8525 | return "DW_AT_use_UTF8"; | |
8526 | case DW_AT_extension: | |
8527 | return "DW_AT_extension"; | |
8528 | case DW_AT_ranges: | |
8529 | return "DW_AT_ranges"; | |
8530 | case DW_AT_trampoline: | |
8531 | return "DW_AT_trampoline"; | |
8532 | case DW_AT_call_column: | |
8533 | return "DW_AT_call_column"; | |
8534 | case DW_AT_call_file: | |
8535 | return "DW_AT_call_file"; | |
8536 | case DW_AT_call_line: | |
8537 | return "DW_AT_call_line"; | |
b7619582 GF |
8538 | case DW_AT_description: |
8539 | return "DW_AT_description"; | |
8540 | case DW_AT_binary_scale: | |
8541 | return "DW_AT_binary_scale"; | |
8542 | case DW_AT_decimal_scale: | |
8543 | return "DW_AT_decimal_scale"; | |
8544 | case DW_AT_small: | |
8545 | return "DW_AT_small"; | |
8546 | case DW_AT_decimal_sign: | |
8547 | return "DW_AT_decimal_sign"; | |
8548 | case DW_AT_digit_count: | |
8549 | return "DW_AT_digit_count"; | |
8550 | case DW_AT_picture_string: | |
8551 | return "DW_AT_picture_string"; | |
8552 | case DW_AT_mutable: | |
8553 | return "DW_AT_mutable"; | |
8554 | case DW_AT_threads_scaled: | |
8555 | return "DW_AT_threads_scaled"; | |
8556 | case DW_AT_explicit: | |
8557 | return "DW_AT_explicit"; | |
8558 | case DW_AT_object_pointer: | |
8559 | return "DW_AT_object_pointer"; | |
8560 | case DW_AT_endianity: | |
8561 | return "DW_AT_endianity"; | |
8562 | case DW_AT_elemental: | |
8563 | return "DW_AT_elemental"; | |
8564 | case DW_AT_pure: | |
8565 | return "DW_AT_pure"; | |
8566 | case DW_AT_recursive: | |
8567 | return "DW_AT_recursive"; | |
b7619582 | 8568 | /* SGI/MIPS extensions. */ |
c764a876 | 8569 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
c906108c SS |
8570 | case DW_AT_MIPS_fde: |
8571 | return "DW_AT_MIPS_fde"; | |
c764a876 | 8572 | #endif |
c906108c SS |
8573 | case DW_AT_MIPS_loop_begin: |
8574 | return "DW_AT_MIPS_loop_begin"; | |
8575 | case DW_AT_MIPS_tail_loop_begin: | |
8576 | return "DW_AT_MIPS_tail_loop_begin"; | |
8577 | case DW_AT_MIPS_epilog_begin: | |
8578 | return "DW_AT_MIPS_epilog_begin"; | |
8579 | case DW_AT_MIPS_loop_unroll_factor: | |
8580 | return "DW_AT_MIPS_loop_unroll_factor"; | |
8581 | case DW_AT_MIPS_software_pipeline_depth: | |
8582 | return "DW_AT_MIPS_software_pipeline_depth"; | |
8583 | case DW_AT_MIPS_linkage_name: | |
8584 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
8585 | case DW_AT_MIPS_stride: |
8586 | return "DW_AT_MIPS_stride"; | |
8587 | case DW_AT_MIPS_abstract_name: | |
8588 | return "DW_AT_MIPS_abstract_name"; | |
8589 | case DW_AT_MIPS_clone_origin: | |
8590 | return "DW_AT_MIPS_clone_origin"; | |
8591 | case DW_AT_MIPS_has_inlines: | |
8592 | return "DW_AT_MIPS_has_inlines"; | |
b7619582 | 8593 | /* HP extensions. */ |
c764a876 | 8594 | #ifndef MIPS /* collides with DW_AT_MIPS_fde */ |
b7619582 GF |
8595 | case DW_AT_HP_block_index: |
8596 | return "DW_AT_HP_block_index"; | |
c764a876 | 8597 | #endif |
b7619582 GF |
8598 | case DW_AT_HP_unmodifiable: |
8599 | return "DW_AT_HP_unmodifiable"; | |
8600 | case DW_AT_HP_actuals_stmt_list: | |
8601 | return "DW_AT_HP_actuals_stmt_list"; | |
8602 | case DW_AT_HP_proc_per_section: | |
8603 | return "DW_AT_HP_proc_per_section"; | |
8604 | case DW_AT_HP_raw_data_ptr: | |
8605 | return "DW_AT_HP_raw_data_ptr"; | |
8606 | case DW_AT_HP_pass_by_reference: | |
8607 | return "DW_AT_HP_pass_by_reference"; | |
8608 | case DW_AT_HP_opt_level: | |
8609 | return "DW_AT_HP_opt_level"; | |
8610 | case DW_AT_HP_prof_version_id: | |
8611 | return "DW_AT_HP_prof_version_id"; | |
8612 | case DW_AT_HP_opt_flags: | |
8613 | return "DW_AT_HP_opt_flags"; | |
8614 | case DW_AT_HP_cold_region_low_pc: | |
8615 | return "DW_AT_HP_cold_region_low_pc"; | |
8616 | case DW_AT_HP_cold_region_high_pc: | |
8617 | return "DW_AT_HP_cold_region_high_pc"; | |
8618 | case DW_AT_HP_all_variables_modifiable: | |
8619 | return "DW_AT_HP_all_variables_modifiable"; | |
8620 | case DW_AT_HP_linkage_name: | |
8621 | return "DW_AT_HP_linkage_name"; | |
8622 | case DW_AT_HP_prof_flags: | |
8623 | return "DW_AT_HP_prof_flags"; | |
8624 | /* GNU extensions. */ | |
c906108c SS |
8625 | case DW_AT_sf_names: |
8626 | return "DW_AT_sf_names"; | |
8627 | case DW_AT_src_info: | |
8628 | return "DW_AT_src_info"; | |
8629 | case DW_AT_mac_info: | |
8630 | return "DW_AT_mac_info"; | |
8631 | case DW_AT_src_coords: | |
8632 | return "DW_AT_src_coords"; | |
8633 | case DW_AT_body_begin: | |
8634 | return "DW_AT_body_begin"; | |
8635 | case DW_AT_body_end: | |
8636 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
8637 | case DW_AT_GNU_vector: |
8638 | return "DW_AT_GNU_vector"; | |
b7619582 GF |
8639 | /* VMS extensions. */ |
8640 | case DW_AT_VMS_rtnbeg_pd_address: | |
8641 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
8642 | /* UPC extension. */ | |
8643 | case DW_AT_upc_threads_scaled: | |
8644 | return "DW_AT_upc_threads_scaled"; | |
8645 | /* PGI (STMicroelectronics) extensions. */ | |
8646 | case DW_AT_PGI_lbase: | |
8647 | return "DW_AT_PGI_lbase"; | |
8648 | case DW_AT_PGI_soffset: | |
8649 | return "DW_AT_PGI_soffset"; | |
8650 | case DW_AT_PGI_lstride: | |
8651 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
8652 | default: |
8653 | return "DW_AT_<unknown>"; | |
8654 | } | |
8655 | } | |
8656 | ||
8657 | /* Convert a DWARF value form code into its string name. */ | |
8658 | ||
8659 | static char * | |
aa1ee363 | 8660 | dwarf_form_name (unsigned form) |
c906108c SS |
8661 | { |
8662 | switch (form) | |
8663 | { | |
8664 | case DW_FORM_addr: | |
8665 | return "DW_FORM_addr"; | |
8666 | case DW_FORM_block2: | |
8667 | return "DW_FORM_block2"; | |
8668 | case DW_FORM_block4: | |
8669 | return "DW_FORM_block4"; | |
8670 | case DW_FORM_data2: | |
8671 | return "DW_FORM_data2"; | |
8672 | case DW_FORM_data4: | |
8673 | return "DW_FORM_data4"; | |
8674 | case DW_FORM_data8: | |
8675 | return "DW_FORM_data8"; | |
8676 | case DW_FORM_string: | |
8677 | return "DW_FORM_string"; | |
8678 | case DW_FORM_block: | |
8679 | return "DW_FORM_block"; | |
8680 | case DW_FORM_block1: | |
8681 | return "DW_FORM_block1"; | |
8682 | case DW_FORM_data1: | |
8683 | return "DW_FORM_data1"; | |
8684 | case DW_FORM_flag: | |
8685 | return "DW_FORM_flag"; | |
8686 | case DW_FORM_sdata: | |
8687 | return "DW_FORM_sdata"; | |
8688 | case DW_FORM_strp: | |
8689 | return "DW_FORM_strp"; | |
8690 | case DW_FORM_udata: | |
8691 | return "DW_FORM_udata"; | |
8692 | case DW_FORM_ref_addr: | |
8693 | return "DW_FORM_ref_addr"; | |
8694 | case DW_FORM_ref1: | |
8695 | return "DW_FORM_ref1"; | |
8696 | case DW_FORM_ref2: | |
8697 | return "DW_FORM_ref2"; | |
8698 | case DW_FORM_ref4: | |
8699 | return "DW_FORM_ref4"; | |
8700 | case DW_FORM_ref8: | |
8701 | return "DW_FORM_ref8"; | |
8702 | case DW_FORM_ref_udata: | |
8703 | return "DW_FORM_ref_udata"; | |
8704 | case DW_FORM_indirect: | |
8705 | return "DW_FORM_indirect"; | |
8706 | default: | |
8707 | return "DW_FORM_<unknown>"; | |
8708 | } | |
8709 | } | |
8710 | ||
8711 | /* Convert a DWARF stack opcode into its string name. */ | |
8712 | ||
8713 | static char * | |
aa1ee363 | 8714 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
8715 | { |
8716 | switch (op) | |
8717 | { | |
8718 | case DW_OP_addr: | |
8719 | return "DW_OP_addr"; | |
8720 | case DW_OP_deref: | |
8721 | return "DW_OP_deref"; | |
8722 | case DW_OP_const1u: | |
8723 | return "DW_OP_const1u"; | |
8724 | case DW_OP_const1s: | |
8725 | return "DW_OP_const1s"; | |
8726 | case DW_OP_const2u: | |
8727 | return "DW_OP_const2u"; | |
8728 | case DW_OP_const2s: | |
8729 | return "DW_OP_const2s"; | |
8730 | case DW_OP_const4u: | |
8731 | return "DW_OP_const4u"; | |
8732 | case DW_OP_const4s: | |
8733 | return "DW_OP_const4s"; | |
8734 | case DW_OP_const8u: | |
8735 | return "DW_OP_const8u"; | |
8736 | case DW_OP_const8s: | |
8737 | return "DW_OP_const8s"; | |
8738 | case DW_OP_constu: | |
8739 | return "DW_OP_constu"; | |
8740 | case DW_OP_consts: | |
8741 | return "DW_OP_consts"; | |
8742 | case DW_OP_dup: | |
8743 | return "DW_OP_dup"; | |
8744 | case DW_OP_drop: | |
8745 | return "DW_OP_drop"; | |
8746 | case DW_OP_over: | |
8747 | return "DW_OP_over"; | |
8748 | case DW_OP_pick: | |
8749 | return "DW_OP_pick"; | |
8750 | case DW_OP_swap: | |
8751 | return "DW_OP_swap"; | |
8752 | case DW_OP_rot: | |
8753 | return "DW_OP_rot"; | |
8754 | case DW_OP_xderef: | |
8755 | return "DW_OP_xderef"; | |
8756 | case DW_OP_abs: | |
8757 | return "DW_OP_abs"; | |
8758 | case DW_OP_and: | |
8759 | return "DW_OP_and"; | |
8760 | case DW_OP_div: | |
8761 | return "DW_OP_div"; | |
8762 | case DW_OP_minus: | |
8763 | return "DW_OP_minus"; | |
8764 | case DW_OP_mod: | |
8765 | return "DW_OP_mod"; | |
8766 | case DW_OP_mul: | |
8767 | return "DW_OP_mul"; | |
8768 | case DW_OP_neg: | |
8769 | return "DW_OP_neg"; | |
8770 | case DW_OP_not: | |
8771 | return "DW_OP_not"; | |
8772 | case DW_OP_or: | |
8773 | return "DW_OP_or"; | |
8774 | case DW_OP_plus: | |
8775 | return "DW_OP_plus"; | |
8776 | case DW_OP_plus_uconst: | |
8777 | return "DW_OP_plus_uconst"; | |
8778 | case DW_OP_shl: | |
8779 | return "DW_OP_shl"; | |
8780 | case DW_OP_shr: | |
8781 | return "DW_OP_shr"; | |
8782 | case DW_OP_shra: | |
8783 | return "DW_OP_shra"; | |
8784 | case DW_OP_xor: | |
8785 | return "DW_OP_xor"; | |
8786 | case DW_OP_bra: | |
8787 | return "DW_OP_bra"; | |
8788 | case DW_OP_eq: | |
8789 | return "DW_OP_eq"; | |
8790 | case DW_OP_ge: | |
8791 | return "DW_OP_ge"; | |
8792 | case DW_OP_gt: | |
8793 | return "DW_OP_gt"; | |
8794 | case DW_OP_le: | |
8795 | return "DW_OP_le"; | |
8796 | case DW_OP_lt: | |
8797 | return "DW_OP_lt"; | |
8798 | case DW_OP_ne: | |
8799 | return "DW_OP_ne"; | |
8800 | case DW_OP_skip: | |
8801 | return "DW_OP_skip"; | |
8802 | case DW_OP_lit0: | |
8803 | return "DW_OP_lit0"; | |
8804 | case DW_OP_lit1: | |
8805 | return "DW_OP_lit1"; | |
8806 | case DW_OP_lit2: | |
8807 | return "DW_OP_lit2"; | |
8808 | case DW_OP_lit3: | |
8809 | return "DW_OP_lit3"; | |
8810 | case DW_OP_lit4: | |
8811 | return "DW_OP_lit4"; | |
8812 | case DW_OP_lit5: | |
8813 | return "DW_OP_lit5"; | |
8814 | case DW_OP_lit6: | |
8815 | return "DW_OP_lit6"; | |
8816 | case DW_OP_lit7: | |
8817 | return "DW_OP_lit7"; | |
8818 | case DW_OP_lit8: | |
8819 | return "DW_OP_lit8"; | |
8820 | case DW_OP_lit9: | |
8821 | return "DW_OP_lit9"; | |
8822 | case DW_OP_lit10: | |
8823 | return "DW_OP_lit10"; | |
8824 | case DW_OP_lit11: | |
8825 | return "DW_OP_lit11"; | |
8826 | case DW_OP_lit12: | |
8827 | return "DW_OP_lit12"; | |
8828 | case DW_OP_lit13: | |
8829 | return "DW_OP_lit13"; | |
8830 | case DW_OP_lit14: | |
8831 | return "DW_OP_lit14"; | |
8832 | case DW_OP_lit15: | |
8833 | return "DW_OP_lit15"; | |
8834 | case DW_OP_lit16: | |
8835 | return "DW_OP_lit16"; | |
8836 | case DW_OP_lit17: | |
8837 | return "DW_OP_lit17"; | |
8838 | case DW_OP_lit18: | |
8839 | return "DW_OP_lit18"; | |
8840 | case DW_OP_lit19: | |
8841 | return "DW_OP_lit19"; | |
8842 | case DW_OP_lit20: | |
8843 | return "DW_OP_lit20"; | |
8844 | case DW_OP_lit21: | |
8845 | return "DW_OP_lit21"; | |
8846 | case DW_OP_lit22: | |
8847 | return "DW_OP_lit22"; | |
8848 | case DW_OP_lit23: | |
8849 | return "DW_OP_lit23"; | |
8850 | case DW_OP_lit24: | |
8851 | return "DW_OP_lit24"; | |
8852 | case DW_OP_lit25: | |
8853 | return "DW_OP_lit25"; | |
8854 | case DW_OP_lit26: | |
8855 | return "DW_OP_lit26"; | |
8856 | case DW_OP_lit27: | |
8857 | return "DW_OP_lit27"; | |
8858 | case DW_OP_lit28: | |
8859 | return "DW_OP_lit28"; | |
8860 | case DW_OP_lit29: | |
8861 | return "DW_OP_lit29"; | |
8862 | case DW_OP_lit30: | |
8863 | return "DW_OP_lit30"; | |
8864 | case DW_OP_lit31: | |
8865 | return "DW_OP_lit31"; | |
8866 | case DW_OP_reg0: | |
8867 | return "DW_OP_reg0"; | |
8868 | case DW_OP_reg1: | |
8869 | return "DW_OP_reg1"; | |
8870 | case DW_OP_reg2: | |
8871 | return "DW_OP_reg2"; | |
8872 | case DW_OP_reg3: | |
8873 | return "DW_OP_reg3"; | |
8874 | case DW_OP_reg4: | |
8875 | return "DW_OP_reg4"; | |
8876 | case DW_OP_reg5: | |
8877 | return "DW_OP_reg5"; | |
8878 | case DW_OP_reg6: | |
8879 | return "DW_OP_reg6"; | |
8880 | case DW_OP_reg7: | |
8881 | return "DW_OP_reg7"; | |
8882 | case DW_OP_reg8: | |
8883 | return "DW_OP_reg8"; | |
8884 | case DW_OP_reg9: | |
8885 | return "DW_OP_reg9"; | |
8886 | case DW_OP_reg10: | |
8887 | return "DW_OP_reg10"; | |
8888 | case DW_OP_reg11: | |
8889 | return "DW_OP_reg11"; | |
8890 | case DW_OP_reg12: | |
8891 | return "DW_OP_reg12"; | |
8892 | case DW_OP_reg13: | |
8893 | return "DW_OP_reg13"; | |
8894 | case DW_OP_reg14: | |
8895 | return "DW_OP_reg14"; | |
8896 | case DW_OP_reg15: | |
8897 | return "DW_OP_reg15"; | |
8898 | case DW_OP_reg16: | |
8899 | return "DW_OP_reg16"; | |
8900 | case DW_OP_reg17: | |
8901 | return "DW_OP_reg17"; | |
8902 | case DW_OP_reg18: | |
8903 | return "DW_OP_reg18"; | |
8904 | case DW_OP_reg19: | |
8905 | return "DW_OP_reg19"; | |
8906 | case DW_OP_reg20: | |
8907 | return "DW_OP_reg20"; | |
8908 | case DW_OP_reg21: | |
8909 | return "DW_OP_reg21"; | |
8910 | case DW_OP_reg22: | |
8911 | return "DW_OP_reg22"; | |
8912 | case DW_OP_reg23: | |
8913 | return "DW_OP_reg23"; | |
8914 | case DW_OP_reg24: | |
8915 | return "DW_OP_reg24"; | |
8916 | case DW_OP_reg25: | |
8917 | return "DW_OP_reg25"; | |
8918 | case DW_OP_reg26: | |
8919 | return "DW_OP_reg26"; | |
8920 | case DW_OP_reg27: | |
8921 | return "DW_OP_reg27"; | |
8922 | case DW_OP_reg28: | |
8923 | return "DW_OP_reg28"; | |
8924 | case DW_OP_reg29: | |
8925 | return "DW_OP_reg29"; | |
8926 | case DW_OP_reg30: | |
8927 | return "DW_OP_reg30"; | |
8928 | case DW_OP_reg31: | |
8929 | return "DW_OP_reg31"; | |
8930 | case DW_OP_breg0: | |
8931 | return "DW_OP_breg0"; | |
8932 | case DW_OP_breg1: | |
8933 | return "DW_OP_breg1"; | |
8934 | case DW_OP_breg2: | |
8935 | return "DW_OP_breg2"; | |
8936 | case DW_OP_breg3: | |
8937 | return "DW_OP_breg3"; | |
8938 | case DW_OP_breg4: | |
8939 | return "DW_OP_breg4"; | |
8940 | case DW_OP_breg5: | |
8941 | return "DW_OP_breg5"; | |
8942 | case DW_OP_breg6: | |
8943 | return "DW_OP_breg6"; | |
8944 | case DW_OP_breg7: | |
8945 | return "DW_OP_breg7"; | |
8946 | case DW_OP_breg8: | |
8947 | return "DW_OP_breg8"; | |
8948 | case DW_OP_breg9: | |
8949 | return "DW_OP_breg9"; | |
8950 | case DW_OP_breg10: | |
8951 | return "DW_OP_breg10"; | |
8952 | case DW_OP_breg11: | |
8953 | return "DW_OP_breg11"; | |
8954 | case DW_OP_breg12: | |
8955 | return "DW_OP_breg12"; | |
8956 | case DW_OP_breg13: | |
8957 | return "DW_OP_breg13"; | |
8958 | case DW_OP_breg14: | |
8959 | return "DW_OP_breg14"; | |
8960 | case DW_OP_breg15: | |
8961 | return "DW_OP_breg15"; | |
8962 | case DW_OP_breg16: | |
8963 | return "DW_OP_breg16"; | |
8964 | case DW_OP_breg17: | |
8965 | return "DW_OP_breg17"; | |
8966 | case DW_OP_breg18: | |
8967 | return "DW_OP_breg18"; | |
8968 | case DW_OP_breg19: | |
8969 | return "DW_OP_breg19"; | |
8970 | case DW_OP_breg20: | |
8971 | return "DW_OP_breg20"; | |
8972 | case DW_OP_breg21: | |
8973 | return "DW_OP_breg21"; | |
8974 | case DW_OP_breg22: | |
8975 | return "DW_OP_breg22"; | |
8976 | case DW_OP_breg23: | |
8977 | return "DW_OP_breg23"; | |
8978 | case DW_OP_breg24: | |
8979 | return "DW_OP_breg24"; | |
8980 | case DW_OP_breg25: | |
8981 | return "DW_OP_breg25"; | |
8982 | case DW_OP_breg26: | |
8983 | return "DW_OP_breg26"; | |
8984 | case DW_OP_breg27: | |
8985 | return "DW_OP_breg27"; | |
8986 | case DW_OP_breg28: | |
8987 | return "DW_OP_breg28"; | |
8988 | case DW_OP_breg29: | |
8989 | return "DW_OP_breg29"; | |
8990 | case DW_OP_breg30: | |
8991 | return "DW_OP_breg30"; | |
8992 | case DW_OP_breg31: | |
8993 | return "DW_OP_breg31"; | |
8994 | case DW_OP_regx: | |
8995 | return "DW_OP_regx"; | |
8996 | case DW_OP_fbreg: | |
8997 | return "DW_OP_fbreg"; | |
8998 | case DW_OP_bregx: | |
8999 | return "DW_OP_bregx"; | |
9000 | case DW_OP_piece: | |
9001 | return "DW_OP_piece"; | |
9002 | case DW_OP_deref_size: | |
9003 | return "DW_OP_deref_size"; | |
9004 | case DW_OP_xderef_size: | |
9005 | return "DW_OP_xderef_size"; | |
9006 | case DW_OP_nop: | |
9007 | return "DW_OP_nop"; | |
b7619582 | 9008 | /* DWARF 3 extensions. */ |
ed348acc EZ |
9009 | case DW_OP_push_object_address: |
9010 | return "DW_OP_push_object_address"; | |
9011 | case DW_OP_call2: | |
9012 | return "DW_OP_call2"; | |
9013 | case DW_OP_call4: | |
9014 | return "DW_OP_call4"; | |
9015 | case DW_OP_call_ref: | |
9016 | return "DW_OP_call_ref"; | |
b7619582 GF |
9017 | /* GNU extensions. */ |
9018 | case DW_OP_form_tls_address: | |
9019 | return "DW_OP_form_tls_address"; | |
9020 | case DW_OP_call_frame_cfa: | |
9021 | return "DW_OP_call_frame_cfa"; | |
9022 | case DW_OP_bit_piece: | |
9023 | return "DW_OP_bit_piece"; | |
ed348acc EZ |
9024 | case DW_OP_GNU_push_tls_address: |
9025 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
9026 | case DW_OP_GNU_uninit: |
9027 | return "DW_OP_GNU_uninit"; | |
b7619582 GF |
9028 | /* HP extensions. */ |
9029 | case DW_OP_HP_is_value: | |
9030 | return "DW_OP_HP_is_value"; | |
9031 | case DW_OP_HP_fltconst4: | |
9032 | return "DW_OP_HP_fltconst4"; | |
9033 | case DW_OP_HP_fltconst8: | |
9034 | return "DW_OP_HP_fltconst8"; | |
9035 | case DW_OP_HP_mod_range: | |
9036 | return "DW_OP_HP_mod_range"; | |
9037 | case DW_OP_HP_unmod_range: | |
9038 | return "DW_OP_HP_unmod_range"; | |
9039 | case DW_OP_HP_tls: | |
9040 | return "DW_OP_HP_tls"; | |
c906108c SS |
9041 | default: |
9042 | return "OP_<unknown>"; | |
9043 | } | |
9044 | } | |
9045 | ||
9046 | static char * | |
fba45db2 | 9047 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
9048 | { |
9049 | if (mybool) | |
9050 | return "TRUE"; | |
9051 | else | |
9052 | return "FALSE"; | |
9053 | } | |
9054 | ||
9055 | /* Convert a DWARF type code into its string name. */ | |
9056 | ||
9057 | static char * | |
aa1ee363 | 9058 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
9059 | { |
9060 | switch (enc) | |
9061 | { | |
b7619582 GF |
9062 | case DW_ATE_void: |
9063 | return "DW_ATE_void"; | |
c906108c SS |
9064 | case DW_ATE_address: |
9065 | return "DW_ATE_address"; | |
9066 | case DW_ATE_boolean: | |
9067 | return "DW_ATE_boolean"; | |
9068 | case DW_ATE_complex_float: | |
9069 | return "DW_ATE_complex_float"; | |
9070 | case DW_ATE_float: | |
9071 | return "DW_ATE_float"; | |
9072 | case DW_ATE_signed: | |
9073 | return "DW_ATE_signed"; | |
9074 | case DW_ATE_signed_char: | |
9075 | return "DW_ATE_signed_char"; | |
9076 | case DW_ATE_unsigned: | |
9077 | return "DW_ATE_unsigned"; | |
9078 | case DW_ATE_unsigned_char: | |
9079 | return "DW_ATE_unsigned_char"; | |
b7619582 | 9080 | /* DWARF 3. */ |
d9fa45fe DC |
9081 | case DW_ATE_imaginary_float: |
9082 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
9083 | case DW_ATE_packed_decimal: |
9084 | return "DW_ATE_packed_decimal"; | |
9085 | case DW_ATE_numeric_string: | |
9086 | return "DW_ATE_numeric_string"; | |
9087 | case DW_ATE_edited: | |
9088 | return "DW_ATE_edited"; | |
9089 | case DW_ATE_signed_fixed: | |
9090 | return "DW_ATE_signed_fixed"; | |
9091 | case DW_ATE_unsigned_fixed: | |
9092 | return "DW_ATE_unsigned_fixed"; | |
9093 | case DW_ATE_decimal_float: | |
9094 | return "DW_ATE_decimal_float"; | |
9095 | /* HP extensions. */ | |
9096 | case DW_ATE_HP_float80: | |
9097 | return "DW_ATE_HP_float80"; | |
9098 | case DW_ATE_HP_complex_float80: | |
9099 | return "DW_ATE_HP_complex_float80"; | |
9100 | case DW_ATE_HP_float128: | |
9101 | return "DW_ATE_HP_float128"; | |
9102 | case DW_ATE_HP_complex_float128: | |
9103 | return "DW_ATE_HP_complex_float128"; | |
9104 | case DW_ATE_HP_floathpintel: | |
9105 | return "DW_ATE_HP_floathpintel"; | |
9106 | case DW_ATE_HP_imaginary_float80: | |
9107 | return "DW_ATE_HP_imaginary_float80"; | |
9108 | case DW_ATE_HP_imaginary_float128: | |
9109 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
9110 | default: |
9111 | return "DW_ATE_<unknown>"; | |
9112 | } | |
9113 | } | |
9114 | ||
9115 | /* Convert a DWARF call frame info operation to its string name. */ | |
9116 | ||
9117 | #if 0 | |
9118 | static char * | |
aa1ee363 | 9119 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
9120 | { |
9121 | switch (cfi_opc) | |
9122 | { | |
9123 | case DW_CFA_advance_loc: | |
9124 | return "DW_CFA_advance_loc"; | |
9125 | case DW_CFA_offset: | |
9126 | return "DW_CFA_offset"; | |
9127 | case DW_CFA_restore: | |
9128 | return "DW_CFA_restore"; | |
9129 | case DW_CFA_nop: | |
9130 | return "DW_CFA_nop"; | |
9131 | case DW_CFA_set_loc: | |
9132 | return "DW_CFA_set_loc"; | |
9133 | case DW_CFA_advance_loc1: | |
9134 | return "DW_CFA_advance_loc1"; | |
9135 | case DW_CFA_advance_loc2: | |
9136 | return "DW_CFA_advance_loc2"; | |
9137 | case DW_CFA_advance_loc4: | |
9138 | return "DW_CFA_advance_loc4"; | |
9139 | case DW_CFA_offset_extended: | |
9140 | return "DW_CFA_offset_extended"; | |
9141 | case DW_CFA_restore_extended: | |
9142 | return "DW_CFA_restore_extended"; | |
9143 | case DW_CFA_undefined: | |
9144 | return "DW_CFA_undefined"; | |
9145 | case DW_CFA_same_value: | |
9146 | return "DW_CFA_same_value"; | |
9147 | case DW_CFA_register: | |
9148 | return "DW_CFA_register"; | |
9149 | case DW_CFA_remember_state: | |
9150 | return "DW_CFA_remember_state"; | |
9151 | case DW_CFA_restore_state: | |
9152 | return "DW_CFA_restore_state"; | |
9153 | case DW_CFA_def_cfa: | |
9154 | return "DW_CFA_def_cfa"; | |
9155 | case DW_CFA_def_cfa_register: | |
9156 | return "DW_CFA_def_cfa_register"; | |
9157 | case DW_CFA_def_cfa_offset: | |
9158 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 9159 | /* DWARF 3. */ |
985cb1a3 JM |
9160 | case DW_CFA_def_cfa_expression: |
9161 | return "DW_CFA_def_cfa_expression"; | |
9162 | case DW_CFA_expression: | |
9163 | return "DW_CFA_expression"; | |
9164 | case DW_CFA_offset_extended_sf: | |
9165 | return "DW_CFA_offset_extended_sf"; | |
9166 | case DW_CFA_def_cfa_sf: | |
9167 | return "DW_CFA_def_cfa_sf"; | |
9168 | case DW_CFA_def_cfa_offset_sf: | |
9169 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
9170 | case DW_CFA_val_offset: |
9171 | return "DW_CFA_val_offset"; | |
9172 | case DW_CFA_val_offset_sf: | |
9173 | return "DW_CFA_val_offset_sf"; | |
9174 | case DW_CFA_val_expression: | |
9175 | return "DW_CFA_val_expression"; | |
9176 | /* SGI/MIPS specific. */ | |
c906108c SS |
9177 | case DW_CFA_MIPS_advance_loc8: |
9178 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 9179 | /* GNU extensions. */ |
985cb1a3 JM |
9180 | case DW_CFA_GNU_window_save: |
9181 | return "DW_CFA_GNU_window_save"; | |
9182 | case DW_CFA_GNU_args_size: | |
9183 | return "DW_CFA_GNU_args_size"; | |
9184 | case DW_CFA_GNU_negative_offset_extended: | |
9185 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
9186 | default: |
9187 | return "DW_CFA_<unknown>"; | |
9188 | } | |
9189 | } | |
9190 | #endif | |
9191 | ||
f9aca02d | 9192 | static void |
d97bc12b | 9193 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
9194 | { |
9195 | unsigned int i; | |
9196 | ||
d97bc12b DE |
9197 | print_spaces (indent, f); |
9198 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset 0x%x)\n", | |
c906108c | 9199 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
d97bc12b DE |
9200 | |
9201 | if (die->parent != NULL) | |
9202 | { | |
9203 | print_spaces (indent, f); | |
9204 | fprintf_unfiltered (f, " parent at offset: 0x%x\n", | |
9205 | die->parent->offset); | |
9206 | } | |
9207 | ||
9208 | print_spaces (indent, f); | |
9209 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 9210 | dwarf_bool_name (die->child != NULL)); |
c906108c | 9211 | |
d97bc12b DE |
9212 | print_spaces (indent, f); |
9213 | fprintf_unfiltered (f, " attributes:\n"); | |
9214 | ||
c906108c SS |
9215 | for (i = 0; i < die->num_attrs; ++i) |
9216 | { | |
d97bc12b DE |
9217 | print_spaces (indent, f); |
9218 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
9219 | dwarf_attr_name (die->attrs[i].name), |
9220 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 9221 | |
c906108c SS |
9222 | switch (die->attrs[i].form) |
9223 | { | |
9224 | case DW_FORM_ref_addr: | |
9225 | case DW_FORM_addr: | |
d97bc12b DE |
9226 | fprintf_unfiltered (f, "address: "); |
9227 | fputs_filtered (paddress (DW_ADDR (&die->attrs[i])), f); | |
c906108c SS |
9228 | break; |
9229 | case DW_FORM_block2: | |
9230 | case DW_FORM_block4: | |
9231 | case DW_FORM_block: | |
9232 | case DW_FORM_block1: | |
d97bc12b | 9233 | fprintf_unfiltered (f, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 9234 | break; |
10b3939b DJ |
9235 | case DW_FORM_ref1: |
9236 | case DW_FORM_ref2: | |
9237 | case DW_FORM_ref4: | |
d97bc12b | 9238 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
10b3939b DJ |
9239 | (long) (DW_ADDR (&die->attrs[i]))); |
9240 | break; | |
c906108c SS |
9241 | case DW_FORM_data1: |
9242 | case DW_FORM_data2: | |
9243 | case DW_FORM_data4: | |
ce5d95e1 | 9244 | case DW_FORM_data8: |
c906108c SS |
9245 | case DW_FORM_udata: |
9246 | case DW_FORM_sdata: | |
d97bc12b | 9247 | fprintf_unfiltered (f, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
9248 | break; |
9249 | case DW_FORM_string: | |
4bdf3d34 | 9250 | case DW_FORM_strp: |
d97bc12b | 9251 | fprintf_unfiltered (f, "string: \"%s\"", |
c906108c | 9252 | DW_STRING (&die->attrs[i]) |
c5aa993b | 9253 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
9254 | break; |
9255 | case DW_FORM_flag: | |
9256 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 9257 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 9258 | else |
d97bc12b | 9259 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 9260 | break; |
a8329558 KW |
9261 | case DW_FORM_indirect: |
9262 | /* the reader will have reduced the indirect form to | |
9263 | the "base form" so this form should not occur */ | |
d97bc12b | 9264 | fprintf_unfiltered (f, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 9265 | break; |
c906108c | 9266 | default: |
d97bc12b | 9267 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 9268 | die->attrs[i].form); |
d97bc12b | 9269 | break; |
c906108c | 9270 | } |
d97bc12b | 9271 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
9272 | } |
9273 | } | |
9274 | ||
f9aca02d | 9275 | static void |
d97bc12b | 9276 | dump_die_for_error (struct die_info *die) |
c906108c | 9277 | { |
d97bc12b DE |
9278 | dump_die_shallow (gdb_stderr, 0, die); |
9279 | } | |
9280 | ||
9281 | static void | |
9282 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
9283 | { | |
9284 | int indent = level * 4; | |
9285 | ||
9286 | gdb_assert (die != NULL); | |
9287 | ||
9288 | if (level >= max_level) | |
9289 | return; | |
9290 | ||
9291 | dump_die_shallow (f, indent, die); | |
9292 | ||
9293 | if (die->child != NULL) | |
c906108c | 9294 | { |
d97bc12b DE |
9295 | print_spaces (indent, f); |
9296 | fprintf_unfiltered (f, " Children:"); | |
9297 | if (level + 1 < max_level) | |
9298 | { | |
9299 | fprintf_unfiltered (f, "\n"); | |
9300 | dump_die_1 (f, level + 1, max_level, die->child); | |
9301 | } | |
9302 | else | |
9303 | { | |
9304 | fprintf_unfiltered (f, " [not printed, max nesting level reached]\n"); | |
9305 | } | |
9306 | } | |
9307 | ||
9308 | if (die->sibling != NULL && level > 0) | |
9309 | { | |
9310 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
9311 | } |
9312 | } | |
9313 | ||
d97bc12b DE |
9314 | /* This is called from the pdie macro in gdbinit.in. |
9315 | It's not static so gcc will keep a copy callable from gdb. */ | |
9316 | ||
9317 | void | |
9318 | dump_die (struct die_info *die, int max_level) | |
9319 | { | |
9320 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
9321 | } | |
9322 | ||
f9aca02d | 9323 | static void |
51545339 | 9324 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 9325 | { |
51545339 | 9326 | void **slot; |
c906108c | 9327 | |
51545339 DJ |
9328 | slot = htab_find_slot_with_hash (cu->die_hash, die, die->offset, INSERT); |
9329 | ||
9330 | *slot = die; | |
c906108c SS |
9331 | } |
9332 | ||
9333 | static unsigned int | |
c764a876 | 9334 | dwarf2_get_ref_die_offset (struct attribute *attr) |
c906108c SS |
9335 | { |
9336 | unsigned int result = 0; | |
9337 | ||
9338 | switch (attr->form) | |
9339 | { | |
9340 | case DW_FORM_ref_addr: | |
c906108c SS |
9341 | case DW_FORM_ref1: |
9342 | case DW_FORM_ref2: | |
9343 | case DW_FORM_ref4: | |
613e1657 | 9344 | case DW_FORM_ref8: |
c906108c | 9345 | case DW_FORM_ref_udata: |
10b3939b | 9346 | result = DW_ADDR (attr); |
c906108c SS |
9347 | break; |
9348 | default: | |
4d3c2250 | 9349 | complaint (&symfile_complaints, |
e2e0b3e5 | 9350 | _("unsupported die ref attribute form: '%s'"), |
4d3c2250 | 9351 | dwarf_form_name (attr->form)); |
c906108c SS |
9352 | } |
9353 | return result; | |
9354 | } | |
9355 | ||
a02abb62 JB |
9356 | /* Return the constant value held by the given attribute. Return -1 |
9357 | if the value held by the attribute is not constant. */ | |
9358 | ||
9359 | static int | |
9360 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
9361 | { | |
9362 | if (attr->form == DW_FORM_sdata) | |
9363 | return DW_SND (attr); | |
9364 | else if (attr->form == DW_FORM_udata | |
9365 | || attr->form == DW_FORM_data1 | |
9366 | || attr->form == DW_FORM_data2 | |
9367 | || attr->form == DW_FORM_data4 | |
9368 | || attr->form == DW_FORM_data8) | |
9369 | return DW_UNSND (attr); | |
9370 | else | |
9371 | { | |
e2e0b3e5 | 9372 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
9373 | dwarf_form_name (attr->form)); |
9374 | return default_value; | |
9375 | } | |
9376 | } | |
9377 | ||
03dd20cc DJ |
9378 | /* THIS_CU has a reference to PER_CU. If necessary, load the new compilation |
9379 | unit and add it to our queue. */ | |
9380 | ||
9381 | static void | |
9382 | maybe_queue_comp_unit (struct dwarf2_cu *this_cu, | |
9383 | struct dwarf2_per_cu_data *per_cu) | |
9384 | { | |
9385 | /* Mark the dependence relation so that we don't flush PER_CU | |
9386 | too early. */ | |
9387 | dwarf2_add_dependence (this_cu, per_cu); | |
9388 | ||
9389 | /* If it's already on the queue, we have nothing to do. */ | |
9390 | if (per_cu->queued) | |
9391 | return; | |
9392 | ||
9393 | /* If the compilation unit is already loaded, just mark it as | |
9394 | used. */ | |
9395 | if (per_cu->cu != NULL) | |
9396 | { | |
9397 | per_cu->cu->last_used = 0; | |
9398 | return; | |
9399 | } | |
9400 | ||
9401 | /* Add it to the queue. */ | |
9402 | queue_comp_unit (per_cu, this_cu->objfile); | |
9403 | } | |
9404 | ||
f9aca02d | 9405 | static struct die_info * |
10b3939b | 9406 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
f2f0e013 | 9407 | struct dwarf2_cu **ref_cu) |
c906108c SS |
9408 | { |
9409 | struct die_info *die; | |
10b3939b | 9410 | unsigned int offset; |
10b3939b | 9411 | struct die_info temp_die; |
f2f0e013 | 9412 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
10b3939b | 9413 | |
c764a876 | 9414 | offset = dwarf2_get_ref_die_offset (attr); |
10b3939b | 9415 | |
45452591 | 9416 | if (! offset_in_cu_p (&cu->header, offset)) |
10b3939b DJ |
9417 | { |
9418 | struct dwarf2_per_cu_data *per_cu; | |
45452591 | 9419 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
03dd20cc DJ |
9420 | |
9421 | /* If necessary, add it to the queue and load its DIEs. */ | |
9422 | maybe_queue_comp_unit (cu, per_cu); | |
9423 | ||
10b3939b DJ |
9424 | target_cu = per_cu->cu; |
9425 | } | |
9426 | else | |
9427 | target_cu = cu; | |
c906108c | 9428 | |
f2f0e013 | 9429 | *ref_cu = target_cu; |
51545339 DJ |
9430 | temp_die.offset = offset; |
9431 | die = htab_find_with_hash (target_cu->die_hash, &temp_die, offset); | |
9432 | if (die) | |
9433 | return die; | |
10b3939b | 9434 | |
8a3fe4f8 AC |
9435 | error (_("Dwarf Error: Cannot find DIE at 0x%lx referenced from DIE " |
9436 | "at 0x%lx [in module %s]"), | |
1d325ec1 | 9437 | (long) offset, (long) src_die->offset, cu->objfile->name); |
c906108c SS |
9438 | } |
9439 | ||
c906108c SS |
9440 | /* Decode simple location descriptions. |
9441 | Given a pointer to a dwarf block that defines a location, compute | |
9442 | the location and return the value. | |
9443 | ||
4cecd739 DJ |
9444 | NOTE drow/2003-11-18: This function is called in two situations |
9445 | now: for the address of static or global variables (partial symbols | |
9446 | only) and for offsets into structures which are expected to be | |
9447 | (more or less) constant. The partial symbol case should go away, | |
9448 | and only the constant case should remain. That will let this | |
9449 | function complain more accurately. A few special modes are allowed | |
9450 | without complaint for global variables (for instance, global | |
9451 | register values and thread-local values). | |
c906108c SS |
9452 | |
9453 | A location description containing no operations indicates that the | |
4cecd739 | 9454 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
9455 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
9456 | callers will only want a very basic result and this can become a | |
9457 | complaint. | |
c906108c | 9458 | |
c906108c SS |
9459 | Note that stack[0] is unused except as a default error return. |
9460 | Note that stack overflow is not yet handled. */ | |
9461 | ||
9462 | static CORE_ADDR | |
e7c27a73 | 9463 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 9464 | { |
e7c27a73 DJ |
9465 | struct objfile *objfile = cu->objfile; |
9466 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
9467 | int i; |
9468 | int size = blk->size; | |
fe1b8b76 | 9469 | gdb_byte *data = blk->data; |
c906108c SS |
9470 | CORE_ADDR stack[64]; |
9471 | int stacki; | |
9472 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 9473 | gdb_byte op; |
c906108c SS |
9474 | |
9475 | i = 0; | |
9476 | stacki = 0; | |
9477 | stack[stacki] = 0; | |
c906108c SS |
9478 | |
9479 | while (i < size) | |
9480 | { | |
c906108c SS |
9481 | op = data[i++]; |
9482 | switch (op) | |
9483 | { | |
f1bea926 JM |
9484 | case DW_OP_lit0: |
9485 | case DW_OP_lit1: | |
9486 | case DW_OP_lit2: | |
9487 | case DW_OP_lit3: | |
9488 | case DW_OP_lit4: | |
9489 | case DW_OP_lit5: | |
9490 | case DW_OP_lit6: | |
9491 | case DW_OP_lit7: | |
9492 | case DW_OP_lit8: | |
9493 | case DW_OP_lit9: | |
9494 | case DW_OP_lit10: | |
9495 | case DW_OP_lit11: | |
9496 | case DW_OP_lit12: | |
9497 | case DW_OP_lit13: | |
9498 | case DW_OP_lit14: | |
9499 | case DW_OP_lit15: | |
9500 | case DW_OP_lit16: | |
9501 | case DW_OP_lit17: | |
9502 | case DW_OP_lit18: | |
9503 | case DW_OP_lit19: | |
9504 | case DW_OP_lit20: | |
9505 | case DW_OP_lit21: | |
9506 | case DW_OP_lit22: | |
9507 | case DW_OP_lit23: | |
9508 | case DW_OP_lit24: | |
9509 | case DW_OP_lit25: | |
9510 | case DW_OP_lit26: | |
9511 | case DW_OP_lit27: | |
9512 | case DW_OP_lit28: | |
9513 | case DW_OP_lit29: | |
9514 | case DW_OP_lit30: | |
9515 | case DW_OP_lit31: | |
9516 | stack[++stacki] = op - DW_OP_lit0; | |
9517 | break; | |
9518 | ||
c906108c SS |
9519 | case DW_OP_reg0: |
9520 | case DW_OP_reg1: | |
9521 | case DW_OP_reg2: | |
9522 | case DW_OP_reg3: | |
9523 | case DW_OP_reg4: | |
9524 | case DW_OP_reg5: | |
9525 | case DW_OP_reg6: | |
9526 | case DW_OP_reg7: | |
9527 | case DW_OP_reg8: | |
9528 | case DW_OP_reg9: | |
9529 | case DW_OP_reg10: | |
9530 | case DW_OP_reg11: | |
9531 | case DW_OP_reg12: | |
9532 | case DW_OP_reg13: | |
9533 | case DW_OP_reg14: | |
9534 | case DW_OP_reg15: | |
9535 | case DW_OP_reg16: | |
9536 | case DW_OP_reg17: | |
9537 | case DW_OP_reg18: | |
9538 | case DW_OP_reg19: | |
9539 | case DW_OP_reg20: | |
9540 | case DW_OP_reg21: | |
9541 | case DW_OP_reg22: | |
9542 | case DW_OP_reg23: | |
9543 | case DW_OP_reg24: | |
9544 | case DW_OP_reg25: | |
9545 | case DW_OP_reg26: | |
9546 | case DW_OP_reg27: | |
9547 | case DW_OP_reg28: | |
9548 | case DW_OP_reg29: | |
9549 | case DW_OP_reg30: | |
9550 | case DW_OP_reg31: | |
c906108c | 9551 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
9552 | if (i < size) |
9553 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9554 | break; |
9555 | ||
9556 | case DW_OP_regx: | |
c906108c SS |
9557 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
9558 | i += bytes_read; | |
c906108c | 9559 | stack[++stacki] = unsnd; |
4cecd739 DJ |
9560 | if (i < size) |
9561 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9562 | break; |
9563 | ||
9564 | case DW_OP_addr: | |
107d2387 | 9565 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 9566 | cu, &bytes_read); |
107d2387 | 9567 | i += bytes_read; |
c906108c SS |
9568 | break; |
9569 | ||
9570 | case DW_OP_const1u: | |
9571 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
9572 | i += 1; | |
9573 | break; | |
9574 | ||
9575 | case DW_OP_const1s: | |
9576 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
9577 | i += 1; | |
9578 | break; | |
9579 | ||
9580 | case DW_OP_const2u: | |
9581 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
9582 | i += 2; | |
9583 | break; | |
9584 | ||
9585 | case DW_OP_const2s: | |
9586 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
9587 | i += 2; | |
9588 | break; | |
9589 | ||
9590 | case DW_OP_const4u: | |
9591 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
9592 | i += 4; | |
9593 | break; | |
9594 | ||
9595 | case DW_OP_const4s: | |
9596 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
9597 | i += 4; | |
9598 | break; | |
9599 | ||
9600 | case DW_OP_constu: | |
9601 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 9602 | &bytes_read); |
c906108c SS |
9603 | i += bytes_read; |
9604 | break; | |
9605 | ||
9606 | case DW_OP_consts: | |
9607 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
9608 | i += bytes_read; | |
9609 | break; | |
9610 | ||
f1bea926 JM |
9611 | case DW_OP_dup: |
9612 | stack[stacki + 1] = stack[stacki]; | |
9613 | stacki++; | |
9614 | break; | |
9615 | ||
c906108c SS |
9616 | case DW_OP_plus: |
9617 | stack[stacki - 1] += stack[stacki]; | |
9618 | stacki--; | |
9619 | break; | |
9620 | ||
9621 | case DW_OP_plus_uconst: | |
9622 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
9623 | i += bytes_read; | |
9624 | break; | |
9625 | ||
9626 | case DW_OP_minus: | |
f1bea926 | 9627 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
9628 | stacki--; |
9629 | break; | |
9630 | ||
7a292a7a | 9631 | case DW_OP_deref: |
7a292a7a | 9632 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
9633 | this using GDB's address_class enum. This is valid for partial |
9634 | global symbols, although the variable's address will be bogus | |
9635 | in the psymtab. */ | |
7a292a7a | 9636 | if (i < size) |
4d3c2250 | 9637 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
9638 | break; |
9639 | ||
9d774e44 | 9640 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
9641 | /* The top of the stack has the offset from the beginning |
9642 | of the thread control block at which the variable is located. */ | |
9643 | /* Nothing should follow this operator, so the top of stack would | |
9644 | be returned. */ | |
4cecd739 DJ |
9645 | /* This is valid for partial global symbols, but the variable's |
9646 | address will be bogus in the psymtab. */ | |
9d774e44 | 9647 | if (i < size) |
4d3c2250 | 9648 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
9649 | break; |
9650 | ||
42be36b3 CT |
9651 | case DW_OP_GNU_uninit: |
9652 | break; | |
9653 | ||
c906108c | 9654 | default: |
e2e0b3e5 | 9655 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
4d3c2250 | 9656 | dwarf_stack_op_name (op)); |
c906108c SS |
9657 | return (stack[stacki]); |
9658 | } | |
9659 | } | |
9660 | return (stack[stacki]); | |
9661 | } | |
9662 | ||
9663 | /* memory allocation interface */ | |
9664 | ||
c906108c | 9665 | static struct dwarf_block * |
7b5a2f43 | 9666 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
9667 | { |
9668 | struct dwarf_block *blk; | |
9669 | ||
9670 | blk = (struct dwarf_block *) | |
7b5a2f43 | 9671 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
9672 | return (blk); |
9673 | } | |
9674 | ||
9675 | static struct abbrev_info * | |
f3dd6933 | 9676 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
9677 | { |
9678 | struct abbrev_info *abbrev; | |
9679 | ||
f3dd6933 DJ |
9680 | abbrev = (struct abbrev_info *) |
9681 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
9682 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
9683 | return (abbrev); | |
9684 | } | |
9685 | ||
9686 | static struct die_info * | |
b60c80d6 | 9687 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
9688 | { |
9689 | struct die_info *die; | |
b60c80d6 DJ |
9690 | size_t size = sizeof (struct die_info); |
9691 | ||
9692 | if (num_attrs > 1) | |
9693 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 9694 | |
b60c80d6 | 9695 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
9696 | memset (die, 0, sizeof (struct die_info)); |
9697 | return (die); | |
9698 | } | |
2e276125 JB |
9699 | |
9700 | \f | |
9701 | /* Macro support. */ | |
9702 | ||
9703 | ||
9704 | /* Return the full name of file number I in *LH's file name table. | |
9705 | Use COMP_DIR as the name of the current directory of the | |
9706 | compilation. The result is allocated using xmalloc; the caller is | |
9707 | responsible for freeing it. */ | |
9708 | static char * | |
9709 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
9710 | { | |
6a83a1e6 EZ |
9711 | /* Is the file number a valid index into the line header's file name |
9712 | table? Remember that file numbers start with one, not zero. */ | |
9713 | if (1 <= file && file <= lh->num_file_names) | |
9714 | { | |
9715 | struct file_entry *fe = &lh->file_names[file - 1]; | |
2e276125 | 9716 | |
6a83a1e6 EZ |
9717 | if (IS_ABSOLUTE_PATH (fe->name)) |
9718 | return xstrdup (fe->name); | |
9719 | else | |
9720 | { | |
9721 | const char *dir; | |
9722 | int dir_len; | |
9723 | char *full_name; | |
9724 | ||
9725 | if (fe->dir_index) | |
9726 | dir = lh->include_dirs[fe->dir_index - 1]; | |
9727 | else | |
9728 | dir = comp_dir; | |
9729 | ||
9730 | if (dir) | |
9731 | { | |
9732 | dir_len = strlen (dir); | |
9733 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
9734 | strcpy (full_name, dir); | |
9735 | full_name[dir_len] = '/'; | |
9736 | strcpy (full_name + dir_len + 1, fe->name); | |
9737 | return full_name; | |
9738 | } | |
9739 | else | |
9740 | return xstrdup (fe->name); | |
9741 | } | |
9742 | } | |
2e276125 JB |
9743 | else |
9744 | { | |
6a83a1e6 EZ |
9745 | /* The compiler produced a bogus file number. We can at least |
9746 | record the macro definitions made in the file, even if we | |
9747 | won't be able to find the file by name. */ | |
9748 | char fake_name[80]; | |
9749 | sprintf (fake_name, "<bad macro file number %d>", file); | |
2e276125 | 9750 | |
6a83a1e6 EZ |
9751 | complaint (&symfile_complaints, |
9752 | _("bad file number in macro information (%d)"), | |
9753 | file); | |
2e276125 | 9754 | |
6a83a1e6 | 9755 | return xstrdup (fake_name); |
2e276125 JB |
9756 | } |
9757 | } | |
9758 | ||
9759 | ||
9760 | static struct macro_source_file * | |
9761 | macro_start_file (int file, int line, | |
9762 | struct macro_source_file *current_file, | |
9763 | const char *comp_dir, | |
9764 | struct line_header *lh, struct objfile *objfile) | |
9765 | { | |
9766 | /* The full name of this source file. */ | |
9767 | char *full_name = file_full_name (file, lh, comp_dir); | |
9768 | ||
9769 | /* We don't create a macro table for this compilation unit | |
9770 | at all until we actually get a filename. */ | |
9771 | if (! pending_macros) | |
4a146b47 | 9772 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 9773 | objfile->macro_cache); |
2e276125 JB |
9774 | |
9775 | if (! current_file) | |
9776 | /* If we have no current file, then this must be the start_file | |
9777 | directive for the compilation unit's main source file. */ | |
9778 | current_file = macro_set_main (pending_macros, full_name); | |
9779 | else | |
9780 | current_file = macro_include (current_file, line, full_name); | |
9781 | ||
9782 | xfree (full_name); | |
9783 | ||
9784 | return current_file; | |
9785 | } | |
9786 | ||
9787 | ||
9788 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
9789 | followed by a null byte. */ | |
9790 | static char * | |
9791 | copy_string (const char *buf, int len) | |
9792 | { | |
9793 | char *s = xmalloc (len + 1); | |
9794 | memcpy (s, buf, len); | |
9795 | s[len] = '\0'; | |
9796 | ||
9797 | return s; | |
9798 | } | |
9799 | ||
9800 | ||
9801 | static const char * | |
9802 | consume_improper_spaces (const char *p, const char *body) | |
9803 | { | |
9804 | if (*p == ' ') | |
9805 | { | |
4d3c2250 | 9806 | complaint (&symfile_complaints, |
e2e0b3e5 | 9807 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 9808 | body); |
2e276125 JB |
9809 | |
9810 | while (*p == ' ') | |
9811 | p++; | |
9812 | } | |
9813 | ||
9814 | return p; | |
9815 | } | |
9816 | ||
9817 | ||
9818 | static void | |
9819 | parse_macro_definition (struct macro_source_file *file, int line, | |
9820 | const char *body) | |
9821 | { | |
9822 | const char *p; | |
9823 | ||
9824 | /* The body string takes one of two forms. For object-like macro | |
9825 | definitions, it should be: | |
9826 | ||
9827 | <macro name> " " <definition> | |
9828 | ||
9829 | For function-like macro definitions, it should be: | |
9830 | ||
9831 | <macro name> "() " <definition> | |
9832 | or | |
9833 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
9834 | ||
9835 | Spaces may appear only where explicitly indicated, and in the | |
9836 | <definition>. | |
9837 | ||
9838 | The Dwarf 2 spec says that an object-like macro's name is always | |
9839 | followed by a space, but versions of GCC around March 2002 omit | |
9840 | the space when the macro's definition is the empty string. | |
9841 | ||
9842 | The Dwarf 2 spec says that there should be no spaces between the | |
9843 | formal arguments in a function-like macro's formal argument list, | |
9844 | but versions of GCC around March 2002 include spaces after the | |
9845 | commas. */ | |
9846 | ||
9847 | ||
9848 | /* Find the extent of the macro name. The macro name is terminated | |
9849 | by either a space or null character (for an object-like macro) or | |
9850 | an opening paren (for a function-like macro). */ | |
9851 | for (p = body; *p; p++) | |
9852 | if (*p == ' ' || *p == '(') | |
9853 | break; | |
9854 | ||
9855 | if (*p == ' ' || *p == '\0') | |
9856 | { | |
9857 | /* It's an object-like macro. */ | |
9858 | int name_len = p - body; | |
9859 | char *name = copy_string (body, name_len); | |
9860 | const char *replacement; | |
9861 | ||
9862 | if (*p == ' ') | |
9863 | replacement = body + name_len + 1; | |
9864 | else | |
9865 | { | |
4d3c2250 | 9866 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9867 | replacement = body + name_len; |
9868 | } | |
9869 | ||
9870 | macro_define_object (file, line, name, replacement); | |
9871 | ||
9872 | xfree (name); | |
9873 | } | |
9874 | else if (*p == '(') | |
9875 | { | |
9876 | /* It's a function-like macro. */ | |
9877 | char *name = copy_string (body, p - body); | |
9878 | int argc = 0; | |
9879 | int argv_size = 1; | |
9880 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
9881 | ||
9882 | p++; | |
9883 | ||
9884 | p = consume_improper_spaces (p, body); | |
9885 | ||
9886 | /* Parse the formal argument list. */ | |
9887 | while (*p && *p != ')') | |
9888 | { | |
9889 | /* Find the extent of the current argument name. */ | |
9890 | const char *arg_start = p; | |
9891 | ||
9892 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
9893 | p++; | |
9894 | ||
9895 | if (! *p || p == arg_start) | |
4d3c2250 | 9896 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9897 | else |
9898 | { | |
9899 | /* Make sure argv has room for the new argument. */ | |
9900 | if (argc >= argv_size) | |
9901 | { | |
9902 | argv_size *= 2; | |
9903 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
9904 | } | |
9905 | ||
9906 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
9907 | } | |
9908 | ||
9909 | p = consume_improper_spaces (p, body); | |
9910 | ||
9911 | /* Consume the comma, if present. */ | |
9912 | if (*p == ',') | |
9913 | { | |
9914 | p++; | |
9915 | ||
9916 | p = consume_improper_spaces (p, body); | |
9917 | } | |
9918 | } | |
9919 | ||
9920 | if (*p == ')') | |
9921 | { | |
9922 | p++; | |
9923 | ||
9924 | if (*p == ' ') | |
9925 | /* Perfectly formed definition, no complaints. */ | |
9926 | macro_define_function (file, line, name, | |
9927 | argc, (const char **) argv, | |
9928 | p + 1); | |
9929 | else if (*p == '\0') | |
9930 | { | |
9931 | /* Complain, but do define it. */ | |
4d3c2250 | 9932 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9933 | macro_define_function (file, line, name, |
9934 | argc, (const char **) argv, | |
9935 | p); | |
9936 | } | |
9937 | else | |
9938 | /* Just complain. */ | |
4d3c2250 | 9939 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9940 | } |
9941 | else | |
9942 | /* Just complain. */ | |
4d3c2250 | 9943 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9944 | |
9945 | xfree (name); | |
9946 | { | |
9947 | int i; | |
9948 | ||
9949 | for (i = 0; i < argc; i++) | |
9950 | xfree (argv[i]); | |
9951 | } | |
9952 | xfree (argv); | |
9953 | } | |
9954 | else | |
4d3c2250 | 9955 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9956 | } |
9957 | ||
9958 | ||
9959 | static void | |
9960 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
9961 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 9962 | struct dwarf2_cu *cu) |
2e276125 | 9963 | { |
fe1b8b76 | 9964 | gdb_byte *mac_ptr, *mac_end; |
2e276125 JB |
9965 | struct macro_source_file *current_file = 0; |
9966 | ||
6502dd73 | 9967 | if (dwarf2_per_objfile->macinfo_buffer == NULL) |
2e276125 | 9968 | { |
e2e0b3e5 | 9969 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
9970 | return; |
9971 | } | |
9972 | ||
6502dd73 DJ |
9973 | mac_ptr = dwarf2_per_objfile->macinfo_buffer + offset; |
9974 | mac_end = dwarf2_per_objfile->macinfo_buffer | |
9975 | + dwarf2_per_objfile->macinfo_size; | |
2e276125 JB |
9976 | |
9977 | for (;;) | |
9978 | { | |
9979 | enum dwarf_macinfo_record_type macinfo_type; | |
9980 | ||
9981 | /* Do we at least have room for a macinfo type byte? */ | |
9982 | if (mac_ptr >= mac_end) | |
9983 | { | |
4d3c2250 | 9984 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9985 | return; |
9986 | } | |
9987 | ||
9988 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
9989 | mac_ptr++; | |
9990 | ||
9991 | switch (macinfo_type) | |
9992 | { | |
9993 | /* A zero macinfo type indicates the end of the macro | |
9994 | information. */ | |
9995 | case 0: | |
9996 | return; | |
9997 | ||
9998 | case DW_MACINFO_define: | |
9999 | case DW_MACINFO_undef: | |
10000 | { | |
891d2f0b | 10001 | unsigned int bytes_read; |
2e276125 JB |
10002 | int line; |
10003 | char *body; | |
10004 | ||
10005 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
10006 | mac_ptr += bytes_read; | |
10007 | body = read_string (abfd, mac_ptr, &bytes_read); | |
10008 | mac_ptr += bytes_read; | |
10009 | ||
10010 | if (! current_file) | |
4d3c2250 | 10011 | complaint (&symfile_complaints, |
e2e0b3e5 | 10012 | _("debug info gives macro %s outside of any file: %s"), |
4d3c2250 KB |
10013 | macinfo_type == |
10014 | DW_MACINFO_define ? "definition" : macinfo_type == | |
10015 | DW_MACINFO_undef ? "undefinition" : | |
10016 | "something-or-other", body); | |
2e276125 JB |
10017 | else |
10018 | { | |
10019 | if (macinfo_type == DW_MACINFO_define) | |
10020 | parse_macro_definition (current_file, line, body); | |
10021 | else if (macinfo_type == DW_MACINFO_undef) | |
10022 | macro_undef (current_file, line, body); | |
10023 | } | |
10024 | } | |
10025 | break; | |
10026 | ||
10027 | case DW_MACINFO_start_file: | |
10028 | { | |
891d2f0b | 10029 | unsigned int bytes_read; |
2e276125 JB |
10030 | int line, file; |
10031 | ||
10032 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
10033 | mac_ptr += bytes_read; | |
10034 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
10035 | mac_ptr += bytes_read; | |
10036 | ||
10037 | current_file = macro_start_file (file, line, | |
10038 | current_file, comp_dir, | |
e7c27a73 | 10039 | lh, cu->objfile); |
2e276125 JB |
10040 | } |
10041 | break; | |
10042 | ||
10043 | case DW_MACINFO_end_file: | |
10044 | if (! current_file) | |
4d3c2250 | 10045 | complaint (&symfile_complaints, |
e2e0b3e5 | 10046 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
10047 | else |
10048 | { | |
10049 | current_file = current_file->included_by; | |
10050 | if (! current_file) | |
10051 | { | |
10052 | enum dwarf_macinfo_record_type next_type; | |
10053 | ||
10054 | /* GCC circa March 2002 doesn't produce the zero | |
10055 | type byte marking the end of the compilation | |
10056 | unit. Complain if it's not there, but exit no | |
10057 | matter what. */ | |
10058 | ||
10059 | /* Do we at least have room for a macinfo type byte? */ | |
10060 | if (mac_ptr >= mac_end) | |
10061 | { | |
4d3c2250 | 10062 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
10063 | return; |
10064 | } | |
10065 | ||
10066 | /* We don't increment mac_ptr here, so this is just | |
10067 | a look-ahead. */ | |
10068 | next_type = read_1_byte (abfd, mac_ptr); | |
10069 | if (next_type != 0) | |
4d3c2250 | 10070 | complaint (&symfile_complaints, |
e2e0b3e5 | 10071 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
10072 | |
10073 | return; | |
10074 | } | |
10075 | } | |
10076 | break; | |
10077 | ||
10078 | case DW_MACINFO_vendor_ext: | |
10079 | { | |
891d2f0b | 10080 | unsigned int bytes_read; |
2e276125 JB |
10081 | int constant; |
10082 | char *string; | |
10083 | ||
10084 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
10085 | mac_ptr += bytes_read; | |
10086 | string = read_string (abfd, mac_ptr, &bytes_read); | |
10087 | mac_ptr += bytes_read; | |
10088 | ||
10089 | /* We don't recognize any vendor extensions. */ | |
10090 | } | |
10091 | break; | |
10092 | } | |
10093 | } | |
10094 | } | |
8e19ed76 PS |
10095 | |
10096 | /* Check if the attribute's form is a DW_FORM_block* | |
10097 | if so return true else false. */ | |
10098 | static int | |
10099 | attr_form_is_block (struct attribute *attr) | |
10100 | { | |
10101 | return (attr == NULL ? 0 : | |
10102 | attr->form == DW_FORM_block1 | |
10103 | || attr->form == DW_FORM_block2 | |
10104 | || attr->form == DW_FORM_block4 | |
10105 | || attr->form == DW_FORM_block); | |
10106 | } | |
4c2df51b | 10107 | |
c6a0999f JB |
10108 | /* Return non-zero if ATTR's value is a section offset --- classes |
10109 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
10110 | You may use DW_UNSND (attr) to retrieve such offsets. | |
10111 | ||
10112 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
10113 | may have a value that belongs to more than one of these classes; it | |
10114 | would be ambiguous if we did, because we use the same forms for all | |
10115 | of them. */ | |
3690dd37 JB |
10116 | static int |
10117 | attr_form_is_section_offset (struct attribute *attr) | |
10118 | { | |
10119 | return (attr->form == DW_FORM_data4 | |
10120 | || attr->form == DW_FORM_data8); | |
10121 | } | |
10122 | ||
10123 | ||
10124 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
10125 | zero otherwise. When this function returns true, you can apply | |
10126 | dwarf2_get_attr_constant_value to it. | |
10127 | ||
10128 | However, note that for some attributes you must check | |
10129 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
10130 | and DW_FORM_data8 are members of both the constant class, and of | |
10131 | the classes that contain offsets into other debug sections | |
10132 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
10133 | that, if an attribute's can be either a constant or one of the | |
10134 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
10135 | taken as section offsets, not constants. */ | |
10136 | static int | |
10137 | attr_form_is_constant (struct attribute *attr) | |
10138 | { | |
10139 | switch (attr->form) | |
10140 | { | |
10141 | case DW_FORM_sdata: | |
10142 | case DW_FORM_udata: | |
10143 | case DW_FORM_data1: | |
10144 | case DW_FORM_data2: | |
10145 | case DW_FORM_data4: | |
10146 | case DW_FORM_data8: | |
10147 | return 1; | |
10148 | default: | |
10149 | return 0; | |
10150 | } | |
10151 | } | |
10152 | ||
4c2df51b DJ |
10153 | static void |
10154 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 10155 | struct dwarf2_cu *cu) |
4c2df51b | 10156 | { |
3690dd37 | 10157 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
10158 | /* ".debug_loc" may not exist at all, or the offset may be outside |
10159 | the section. If so, fall through to the complaint in the | |
10160 | other branch. */ | |
10161 | && DW_UNSND (attr) < dwarf2_per_objfile->loc_size) | |
4c2df51b | 10162 | { |
0d53c4c4 | 10163 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 10164 | |
4a146b47 | 10165 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 10166 | sizeof (struct dwarf2_loclist_baton)); |
ae0d2f24 UW |
10167 | baton->per_cu = cu->per_cu; |
10168 | gdb_assert (baton->per_cu); | |
4c2df51b | 10169 | |
0d53c4c4 DJ |
10170 | /* We don't know how long the location list is, but make sure we |
10171 | don't run off the edge of the section. */ | |
6502dd73 DJ |
10172 | baton->size = dwarf2_per_objfile->loc_size - DW_UNSND (attr); |
10173 | baton->data = dwarf2_per_objfile->loc_buffer + DW_UNSND (attr); | |
d00adf39 DE |
10174 | baton->base_address = cu->base_address; |
10175 | if (cu->base_known == 0) | |
0d53c4c4 | 10176 | complaint (&symfile_complaints, |
e2e0b3e5 | 10177 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 10178 | |
a67af2b9 | 10179 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
10180 | SYMBOL_LOCATION_BATON (sym) = baton; |
10181 | } | |
10182 | else | |
10183 | { | |
10184 | struct dwarf2_locexpr_baton *baton; | |
10185 | ||
4a146b47 | 10186 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 10187 | sizeof (struct dwarf2_locexpr_baton)); |
ae0d2f24 UW |
10188 | baton->per_cu = cu->per_cu; |
10189 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
10190 | |
10191 | if (attr_form_is_block (attr)) | |
10192 | { | |
10193 | /* Note that we're just copying the block's data pointer | |
10194 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
10195 | info_buffer for SYM's objfile; right now we never release |
10196 | that buffer, but when we do clean up properly this may | |
10197 | need to change. */ | |
0d53c4c4 DJ |
10198 | baton->size = DW_BLOCK (attr)->size; |
10199 | baton->data = DW_BLOCK (attr)->data; | |
10200 | } | |
10201 | else | |
10202 | { | |
10203 | dwarf2_invalid_attrib_class_complaint ("location description", | |
10204 | SYMBOL_NATURAL_NAME (sym)); | |
10205 | baton->size = 0; | |
10206 | baton->data = NULL; | |
10207 | } | |
10208 | ||
a67af2b9 | 10209 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
10210 | SYMBOL_LOCATION_BATON (sym) = baton; |
10211 | } | |
4c2df51b | 10212 | } |
6502dd73 | 10213 | |
ae0d2f24 UW |
10214 | /* Return the OBJFILE associated with the compilation unit CU. */ |
10215 | ||
10216 | struct objfile * | |
10217 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
10218 | { | |
10219 | struct objfile *objfile = per_cu->psymtab->objfile; | |
10220 | ||
10221 | /* Return the master objfile, so that we can report and look up the | |
10222 | correct file containing this variable. */ | |
10223 | if (objfile->separate_debug_objfile_backlink) | |
10224 | objfile = objfile->separate_debug_objfile_backlink; | |
10225 | ||
10226 | return objfile; | |
10227 | } | |
10228 | ||
10229 | /* Return the address size given in the compilation unit header for CU. */ | |
10230 | ||
10231 | CORE_ADDR | |
10232 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) | |
10233 | { | |
10234 | if (per_cu->cu) | |
10235 | return per_cu->cu->header.addr_size; | |
10236 | else | |
10237 | { | |
10238 | /* If the CU is not currently read in, we re-read its header. */ | |
10239 | struct objfile *objfile = per_cu->psymtab->objfile; | |
10240 | struct dwarf2_per_objfile *per_objfile | |
10241 | = objfile_data (objfile, dwarf2_objfile_data_key); | |
10242 | gdb_byte *info_ptr = per_objfile->info_buffer + per_cu->offset; | |
10243 | ||
10244 | struct comp_unit_head cu_header; | |
10245 | memset (&cu_header, 0, sizeof cu_header); | |
10246 | read_comp_unit_head (&cu_header, info_ptr, objfile->obfd); | |
10247 | return cu_header.addr_size; | |
10248 | } | |
10249 | } | |
10250 | ||
ae038cb0 | 10251 | /* Locate the compilation unit from CU's objfile which contains the |
10b3939b | 10252 | DIE at OFFSET. Raises an error on failure. */ |
ae038cb0 DJ |
10253 | |
10254 | static struct dwarf2_per_cu_data * | |
c764a876 | 10255 | dwarf2_find_containing_comp_unit (unsigned int offset, |
ae038cb0 DJ |
10256 | struct objfile *objfile) |
10257 | { | |
10258 | struct dwarf2_per_cu_data *this_cu; | |
10259 | int low, high; | |
10260 | ||
ae038cb0 DJ |
10261 | low = 0; |
10262 | high = dwarf2_per_objfile->n_comp_units - 1; | |
10263 | while (high > low) | |
10264 | { | |
10265 | int mid = low + (high - low) / 2; | |
10266 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) | |
10267 | high = mid; | |
10268 | else | |
10269 | low = mid + 1; | |
10270 | } | |
10271 | gdb_assert (low == high); | |
10272 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
10273 | { | |
10b3939b | 10274 | if (low == 0) |
8a3fe4f8 AC |
10275 | error (_("Dwarf Error: could not find partial DIE containing " |
10276 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
10277 | (long) offset, bfd_get_filename (objfile->obfd)); |
10278 | ||
ae038cb0 DJ |
10279 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
10280 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
10281 | } | |
10282 | else | |
10283 | { | |
10284 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
10285 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
10286 | && offset >= this_cu->offset + this_cu->length) | |
c764a876 | 10287 | error (_("invalid dwarf2 offset %u"), offset); |
ae038cb0 DJ |
10288 | gdb_assert (offset < this_cu->offset + this_cu->length); |
10289 | return this_cu; | |
10290 | } | |
10291 | } | |
10292 | ||
10b3939b DJ |
10293 | /* Locate the compilation unit from OBJFILE which is located at exactly |
10294 | OFFSET. Raises an error on failure. */ | |
10295 | ||
ae038cb0 | 10296 | static struct dwarf2_per_cu_data * |
c764a876 | 10297 | dwarf2_find_comp_unit (unsigned int offset, struct objfile *objfile) |
ae038cb0 DJ |
10298 | { |
10299 | struct dwarf2_per_cu_data *this_cu; | |
10300 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
10301 | if (this_cu->offset != offset) | |
c764a876 | 10302 | error (_("no compilation unit with offset %u."), offset); |
ae038cb0 DJ |
10303 | return this_cu; |
10304 | } | |
10305 | ||
10306 | /* Release one cached compilation unit, CU. We unlink it from the tree | |
10307 | of compilation units, but we don't remove it from the read_in_chain; | |
10308 | the caller is responsible for that. */ | |
10309 | ||
10310 | static void | |
10311 | free_one_comp_unit (void *data) | |
10312 | { | |
10313 | struct dwarf2_cu *cu = data; | |
10314 | ||
10315 | if (cu->per_cu != NULL) | |
10316 | cu->per_cu->cu = NULL; | |
10317 | cu->per_cu = NULL; | |
10318 | ||
10319 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10320 | ||
10321 | xfree (cu); | |
10322 | } | |
10323 | ||
72bf9492 | 10324 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
10325 | when we're finished with it. We can't free the pointer itself, but be |
10326 | sure to unlink it from the cache. Also release any associated storage | |
10327 | and perform cache maintenance. | |
72bf9492 DJ |
10328 | |
10329 | Only used during partial symbol parsing. */ | |
10330 | ||
10331 | static void | |
10332 | free_stack_comp_unit (void *data) | |
10333 | { | |
10334 | struct dwarf2_cu *cu = data; | |
10335 | ||
10336 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10337 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
10338 | |
10339 | if (cu->per_cu != NULL) | |
10340 | { | |
10341 | /* This compilation unit is on the stack in our caller, so we | |
10342 | should not xfree it. Just unlink it. */ | |
10343 | cu->per_cu->cu = NULL; | |
10344 | cu->per_cu = NULL; | |
10345 | ||
10346 | /* If we had a per-cu pointer, then we may have other compilation | |
10347 | units loaded, so age them now. */ | |
10348 | age_cached_comp_units (); | |
10349 | } | |
10350 | } | |
10351 | ||
10352 | /* Free all cached compilation units. */ | |
10353 | ||
10354 | static void | |
10355 | free_cached_comp_units (void *data) | |
10356 | { | |
10357 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
10358 | ||
10359 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10360 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
10361 | while (per_cu != NULL) | |
10362 | { | |
10363 | struct dwarf2_per_cu_data *next_cu; | |
10364 | ||
10365 | next_cu = per_cu->cu->read_in_chain; | |
10366 | ||
10367 | free_one_comp_unit (per_cu->cu); | |
10368 | *last_chain = next_cu; | |
10369 | ||
10370 | per_cu = next_cu; | |
10371 | } | |
10372 | } | |
10373 | ||
10374 | /* Increase the age counter on each cached compilation unit, and free | |
10375 | any that are too old. */ | |
10376 | ||
10377 | static void | |
10378 | age_cached_comp_units (void) | |
10379 | { | |
10380 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
10381 | ||
10382 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
10383 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10384 | while (per_cu != NULL) | |
10385 | { | |
10386 | per_cu->cu->last_used ++; | |
10387 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
10388 | dwarf2_mark (per_cu->cu); | |
10389 | per_cu = per_cu->cu->read_in_chain; | |
10390 | } | |
10391 | ||
10392 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10393 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
10394 | while (per_cu != NULL) | |
10395 | { | |
10396 | struct dwarf2_per_cu_data *next_cu; | |
10397 | ||
10398 | next_cu = per_cu->cu->read_in_chain; | |
10399 | ||
10400 | if (!per_cu->cu->mark) | |
10401 | { | |
10402 | free_one_comp_unit (per_cu->cu); | |
10403 | *last_chain = next_cu; | |
10404 | } | |
10405 | else | |
10406 | last_chain = &per_cu->cu->read_in_chain; | |
10407 | ||
10408 | per_cu = next_cu; | |
10409 | } | |
10410 | } | |
10411 | ||
10412 | /* Remove a single compilation unit from the cache. */ | |
10413 | ||
10414 | static void | |
10415 | free_one_cached_comp_unit (void *target_cu) | |
10416 | { | |
10417 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
10418 | ||
10419 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10420 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
10421 | while (per_cu != NULL) | |
10422 | { | |
10423 | struct dwarf2_per_cu_data *next_cu; | |
10424 | ||
10425 | next_cu = per_cu->cu->read_in_chain; | |
10426 | ||
10427 | if (per_cu->cu == target_cu) | |
10428 | { | |
10429 | free_one_comp_unit (per_cu->cu); | |
10430 | *last_chain = next_cu; | |
10431 | break; | |
10432 | } | |
10433 | else | |
10434 | last_chain = &per_cu->cu->read_in_chain; | |
10435 | ||
10436 | per_cu = next_cu; | |
10437 | } | |
10438 | } | |
10439 | ||
fe3e1990 DJ |
10440 | /* Release all extra memory associated with OBJFILE. */ |
10441 | ||
10442 | void | |
10443 | dwarf2_free_objfile (struct objfile *objfile) | |
10444 | { | |
10445 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10446 | ||
10447 | if (dwarf2_per_objfile == NULL) | |
10448 | return; | |
10449 | ||
10450 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
10451 | free_cached_comp_units (NULL); | |
10452 | ||
10453 | /* Everything else should be on the objfile obstack. */ | |
10454 | } | |
10455 | ||
1c379e20 DJ |
10456 | /* A pair of DIE offset and GDB type pointer. We store these |
10457 | in a hash table separate from the DIEs, and preserve them | |
10458 | when the DIEs are flushed out of cache. */ | |
10459 | ||
10460 | struct dwarf2_offset_and_type | |
10461 | { | |
10462 | unsigned int offset; | |
10463 | struct type *type; | |
10464 | }; | |
10465 | ||
10466 | /* Hash function for a dwarf2_offset_and_type. */ | |
10467 | ||
10468 | static hashval_t | |
10469 | offset_and_type_hash (const void *item) | |
10470 | { | |
10471 | const struct dwarf2_offset_and_type *ofs = item; | |
10472 | return ofs->offset; | |
10473 | } | |
10474 | ||
10475 | /* Equality function for a dwarf2_offset_and_type. */ | |
10476 | ||
10477 | static int | |
10478 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
10479 | { | |
10480 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
10481 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
10482 | return ofs_lhs->offset == ofs_rhs->offset; | |
10483 | } | |
10484 | ||
10485 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
f792889a | 10486 | table if necessary. For convenience, return TYPE. */ |
1c379e20 | 10487 | |
f792889a | 10488 | static struct type * |
1c379e20 DJ |
10489 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
10490 | { | |
10491 | struct dwarf2_offset_and_type **slot, ofs; | |
10492 | ||
f792889a DJ |
10493 | if (cu->type_hash == NULL) |
10494 | { | |
10495 | gdb_assert (cu->per_cu != NULL); | |
10496 | cu->per_cu->type_hash | |
10497 | = htab_create_alloc_ex (cu->header.length / 24, | |
10498 | offset_and_type_hash, | |
10499 | offset_and_type_eq, | |
10500 | NULL, | |
10501 | &cu->objfile->objfile_obstack, | |
10502 | hashtab_obstack_allocate, | |
10503 | dummy_obstack_deallocate); | |
10504 | cu->type_hash = cu->per_cu->type_hash; | |
10505 | } | |
1c379e20 DJ |
10506 | |
10507 | ofs.offset = die->offset; | |
10508 | ofs.type = type; | |
10509 | slot = (struct dwarf2_offset_and_type **) | |
f792889a | 10510 | htab_find_slot_with_hash (cu->type_hash, &ofs, ofs.offset, INSERT); |
1c379e20 DJ |
10511 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); |
10512 | **slot = ofs; | |
f792889a | 10513 | return type; |
1c379e20 DJ |
10514 | } |
10515 | ||
f792889a DJ |
10516 | /* Find the type for DIE in CU's type_hash, or return NULL if DIE does |
10517 | not have a saved type. */ | |
1c379e20 DJ |
10518 | |
10519 | static struct type * | |
f792889a | 10520 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) |
1c379e20 DJ |
10521 | { |
10522 | struct dwarf2_offset_and_type *slot, ofs; | |
f792889a DJ |
10523 | htab_t type_hash = cu->type_hash; |
10524 | ||
10525 | if (type_hash == NULL) | |
10526 | return NULL; | |
1c379e20 DJ |
10527 | |
10528 | ofs.offset = die->offset; | |
10529 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
10530 | if (slot) | |
10531 | return slot->type; | |
10532 | else | |
10533 | return NULL; | |
10534 | } | |
10535 | ||
10b3939b DJ |
10536 | /* Set the mark field in CU and in every other compilation unit in the |
10537 | cache that we must keep because we are keeping CU. */ | |
10538 | ||
10539 | /* Add a dependence relationship from CU to REF_PER_CU. */ | |
10540 | ||
10541 | static void | |
10542 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
10543 | struct dwarf2_per_cu_data *ref_per_cu) | |
10544 | { | |
10545 | void **slot; | |
10546 | ||
10547 | if (cu->dependencies == NULL) | |
10548 | cu->dependencies | |
10549 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
10550 | NULL, &cu->comp_unit_obstack, | |
10551 | hashtab_obstack_allocate, | |
10552 | dummy_obstack_deallocate); | |
10553 | ||
10554 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
10555 | if (*slot == NULL) | |
10556 | *slot = ref_per_cu; | |
10557 | } | |
1c379e20 | 10558 | |
ae038cb0 DJ |
10559 | /* Set the mark field in CU and in every other compilation unit in the |
10560 | cache that we must keep because we are keeping CU. */ | |
10561 | ||
10b3939b DJ |
10562 | static int |
10563 | dwarf2_mark_helper (void **slot, void *data) | |
10564 | { | |
10565 | struct dwarf2_per_cu_data *per_cu; | |
10566 | ||
10567 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
10568 | if (per_cu->cu->mark) | |
10569 | return 1; | |
10570 | per_cu->cu->mark = 1; | |
10571 | ||
10572 | if (per_cu->cu->dependencies != NULL) | |
10573 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
10574 | ||
10575 | return 1; | |
10576 | } | |
10577 | ||
ae038cb0 DJ |
10578 | static void |
10579 | dwarf2_mark (struct dwarf2_cu *cu) | |
10580 | { | |
10581 | if (cu->mark) | |
10582 | return; | |
10583 | cu->mark = 1; | |
10b3939b DJ |
10584 | if (cu->dependencies != NULL) |
10585 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
10586 | } |
10587 | ||
10588 | static void | |
10589 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
10590 | { | |
10591 | while (per_cu) | |
10592 | { | |
10593 | per_cu->cu->mark = 0; | |
10594 | per_cu = per_cu->cu->read_in_chain; | |
10595 | } | |
72bf9492 DJ |
10596 | } |
10597 | ||
72bf9492 DJ |
10598 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
10599 | is its offset in .debug_info for this objfile. */ | |
10600 | ||
10601 | static hashval_t | |
10602 | partial_die_hash (const void *item) | |
10603 | { | |
10604 | const struct partial_die_info *part_die = item; | |
10605 | return part_die->offset; | |
10606 | } | |
10607 | ||
10608 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
10609 | are equal if they have the same offset. */ | |
10610 | ||
10611 | static int | |
10612 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
10613 | { | |
10614 | const struct partial_die_info *part_die_lhs = item_lhs; | |
10615 | const struct partial_die_info *part_die_rhs = item_rhs; | |
10616 | return part_die_lhs->offset == part_die_rhs->offset; | |
10617 | } | |
10618 | ||
ae038cb0 DJ |
10619 | static struct cmd_list_element *set_dwarf2_cmdlist; |
10620 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
10621 | ||
10622 | static void | |
10623 | set_dwarf2_cmd (char *args, int from_tty) | |
10624 | { | |
10625 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
10626 | } | |
10627 | ||
10628 | static void | |
10629 | show_dwarf2_cmd (char *args, int from_tty) | |
10630 | { | |
10631 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
10632 | } | |
10633 | ||
6502dd73 DJ |
10634 | void _initialize_dwarf2_read (void); |
10635 | ||
10636 | void | |
10637 | _initialize_dwarf2_read (void) | |
10638 | { | |
10639 | dwarf2_objfile_data_key = register_objfile_data (); | |
ae038cb0 | 10640 | |
1bedd215 AC |
10641 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
10642 | Set DWARF 2 specific variables.\n\ | |
10643 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10644 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
10645 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
10646 | ||
1bedd215 AC |
10647 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
10648 | Show DWARF 2 specific variables\n\ | |
10649 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10650 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
10651 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
10652 | ||
10653 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
10654 | &dwarf2_max_cache_age, _("\ |
10655 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10656 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10657 | A higher limit means that cached compilation units will be stored\n\ | |
10658 | in memory longer, and more total memory will be used. Zero disables\n\ | |
10659 | caching, which can slow down startup."), | |
2c5b56ce | 10660 | NULL, |
920d2a44 | 10661 | show_dwarf2_max_cache_age, |
2c5b56ce | 10662 | &set_dwarf2_cmdlist, |
ae038cb0 | 10663 | &show_dwarf2_cmdlist); |
d97bc12b DE |
10664 | |
10665 | add_setshow_zinteger_cmd ("dwarf2-die", no_class, &dwarf2_die_debug, _("\ | |
10666 | Set debugging of the dwarf2 DIE reader."), _("\ | |
10667 | Show debugging of the dwarf2 DIE reader."), _("\ | |
10668 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
10669 | The value is the maximum depth to print."), | |
10670 | NULL, | |
10671 | NULL, | |
10672 | &setdebuglist, &showdebuglist); | |
6502dd73 | 10673 | } |