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, |
9b254dd1 | 4 | 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
c906108c SS |
5 | |
6 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
7 | Inc. with support from Florida State University (under contract | |
8 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
9 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
10 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 11 | support. |
c906108c | 12 | |
c5aa993b | 13 | This file is part of GDB. |
c906108c | 14 | |
c5aa993b JM |
15 | This program is free software; you can redistribute it and/or modify |
16 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
17 | the Free Software Foundation; either version 3 of the License, or |
18 | (at your option) any later version. | |
c906108c | 19 | |
a9762ec7 JB |
20 | This program is distributed in the hope that it will be useful, |
21 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | GNU General Public License for more details. | |
c906108c | 24 | |
c5aa993b | 25 | You should have received a copy of the GNU General Public License |
a9762ec7 | 26 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
27 | |
28 | #include "defs.h" | |
29 | #include "bfd.h" | |
c906108c SS |
30 | #include "symtab.h" |
31 | #include "gdbtypes.h" | |
c906108c SS |
32 | #include "objfiles.h" |
33 | #include "elf/dwarf2.h" | |
34 | #include "buildsym.h" | |
35 | #include "demangle.h" | |
36 | #include "expression.h" | |
d5166ae1 | 37 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 38 | #include "macrotab.h" |
c906108c SS |
39 | #include "language.h" |
40 | #include "complaints.h" | |
357e46e7 | 41 | #include "bcache.h" |
4c2df51b DJ |
42 | #include "dwarf2expr.h" |
43 | #include "dwarf2loc.h" | |
9219021c | 44 | #include "cp-support.h" |
72bf9492 | 45 | #include "hashtab.h" |
ae038cb0 DJ |
46 | #include "command.h" |
47 | #include "gdbcmd.h" | |
4c2df51b | 48 | |
c906108c SS |
49 | #include <fcntl.h> |
50 | #include "gdb_string.h" | |
4bdf3d34 | 51 | #include "gdb_assert.h" |
c906108c SS |
52 | #include <sys/types.h> |
53 | ||
d8151005 DJ |
54 | /* A note on memory usage for this file. |
55 | ||
56 | At the present time, this code reads the debug info sections into | |
57 | the objfile's objfile_obstack. A definite improvement for startup | |
58 | time, on platforms which do not emit relocations for debug | |
59 | sections, would be to use mmap instead. The object's complete | |
60 | debug information is loaded into memory, partly to simplify | |
61 | absolute DIE references. | |
62 | ||
63 | Whether using obstacks or mmap, the sections should remain loaded | |
64 | until the objfile is released, and pointers into the section data | |
65 | can be used for any other data associated to the objfile (symbol | |
66 | names, type names, location expressions to name a few). */ | |
67 | ||
107d2387 | 68 | #if 0 |
357e46e7 | 69 | /* .debug_info header for a compilation unit |
c906108c SS |
70 | Because of alignment constraints, this structure has padding and cannot |
71 | be mapped directly onto the beginning of the .debug_info section. */ | |
72 | typedef struct comp_unit_header | |
73 | { | |
74 | unsigned int length; /* length of the .debug_info | |
75 | contribution */ | |
76 | unsigned short version; /* version number -- 2 for DWARF | |
77 | version 2 */ | |
78 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
79 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
80 | } | |
81 | _COMP_UNIT_HEADER; | |
82 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 83 | #endif |
c906108c SS |
84 | |
85 | /* .debug_pubnames header | |
86 | Because of alignment constraints, this structure has padding and cannot | |
87 | be mapped directly onto the beginning of the .debug_info section. */ | |
88 | typedef struct pubnames_header | |
89 | { | |
90 | unsigned int length; /* length of the .debug_pubnames | |
91 | contribution */ | |
92 | unsigned char version; /* version number -- 2 for DWARF | |
93 | version 2 */ | |
94 | unsigned int info_offset; /* offset into .debug_info section */ | |
95 | unsigned int info_size; /* byte size of .debug_info section | |
96 | portion */ | |
97 | } | |
98 | _PUBNAMES_HEADER; | |
99 | #define _ACTUAL_PUBNAMES_HEADER_SIZE 13 | |
100 | ||
101 | /* .debug_pubnames header | |
102 | Because of alignment constraints, this structure has padding and cannot | |
103 | be mapped directly onto the beginning of the .debug_info section. */ | |
104 | typedef struct aranges_header | |
105 | { | |
106 | unsigned int length; /* byte len of the .debug_aranges | |
107 | contribution */ | |
108 | unsigned short version; /* version number -- 2 for DWARF | |
109 | version 2 */ | |
110 | unsigned int info_offset; /* offset into .debug_info section */ | |
111 | unsigned char addr_size; /* byte size of an address */ | |
112 | unsigned char seg_size; /* byte size of segment descriptor */ | |
113 | } | |
114 | _ARANGES_HEADER; | |
115 | #define _ACTUAL_ARANGES_HEADER_SIZE 12 | |
116 | ||
117 | /* .debug_line statement program prologue | |
118 | Because of alignment constraints, this structure has padding and cannot | |
119 | be mapped directly onto the beginning of the .debug_info section. */ | |
120 | typedef struct statement_prologue | |
121 | { | |
122 | unsigned int total_length; /* byte length of the statement | |
123 | information */ | |
124 | unsigned short version; /* version number -- 2 for DWARF | |
125 | version 2 */ | |
126 | unsigned int prologue_length; /* # bytes between prologue & | |
127 | stmt program */ | |
128 | unsigned char minimum_instruction_length; /* byte size of | |
129 | smallest instr */ | |
130 | unsigned char default_is_stmt; /* initial value of is_stmt | |
131 | register */ | |
132 | char line_base; | |
133 | unsigned char line_range; | |
134 | unsigned char opcode_base; /* number assigned to first special | |
135 | opcode */ | |
136 | unsigned char *standard_opcode_lengths; | |
137 | } | |
138 | _STATEMENT_PROLOGUE; | |
139 | ||
6502dd73 DJ |
140 | static const struct objfile_data *dwarf2_objfile_data_key; |
141 | ||
142 | struct dwarf2_per_objfile | |
143 | { | |
144 | /* Sizes of debugging sections. */ | |
145 | unsigned int info_size; | |
146 | unsigned int abbrev_size; | |
147 | unsigned int line_size; | |
148 | unsigned int pubnames_size; | |
149 | unsigned int aranges_size; | |
150 | unsigned int loc_size; | |
151 | unsigned int macinfo_size; | |
152 | unsigned int str_size; | |
153 | unsigned int ranges_size; | |
154 | unsigned int frame_size; | |
155 | unsigned int eh_frame_size; | |
156 | ||
157 | /* Loaded data from the sections. */ | |
fe1b8b76 JB |
158 | gdb_byte *info_buffer; |
159 | gdb_byte *abbrev_buffer; | |
160 | gdb_byte *line_buffer; | |
161 | gdb_byte *str_buffer; | |
162 | gdb_byte *macinfo_buffer; | |
163 | gdb_byte *ranges_buffer; | |
164 | gdb_byte *loc_buffer; | |
ae038cb0 | 165 | |
10b3939b DJ |
166 | /* A list of all the compilation units. This is used to locate |
167 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
168 | struct dwarf2_per_cu_data **all_comp_units; |
169 | ||
170 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
171 | int n_comp_units; | |
172 | ||
173 | /* A chain of compilation units that are currently read in, so that | |
174 | they can be freed later. */ | |
175 | struct dwarf2_per_cu_data *read_in_chain; | |
72dca2f5 FR |
176 | |
177 | /* A flag indicating wether this objfile has a section loaded at a | |
178 | VMA of 0. */ | |
179 | int has_section_at_zero; | |
6502dd73 DJ |
180 | }; |
181 | ||
182 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 183 | |
086df311 DJ |
184 | static asection *dwarf_info_section; |
185 | static asection *dwarf_abbrev_section; | |
186 | static asection *dwarf_line_section; | |
187 | static asection *dwarf_pubnames_section; | |
188 | static asection *dwarf_aranges_section; | |
189 | static asection *dwarf_loc_section; | |
190 | static asection *dwarf_macinfo_section; | |
191 | static asection *dwarf_str_section; | |
192 | static asection *dwarf_ranges_section; | |
193 | asection *dwarf_frame_section; | |
194 | asection *dwarf_eh_frame_section; | |
195 | ||
c906108c SS |
196 | /* names of the debugging sections */ |
197 | ||
198 | #define INFO_SECTION ".debug_info" | |
199 | #define ABBREV_SECTION ".debug_abbrev" | |
200 | #define LINE_SECTION ".debug_line" | |
201 | #define PUBNAMES_SECTION ".debug_pubnames" | |
202 | #define ARANGES_SECTION ".debug_aranges" | |
203 | #define LOC_SECTION ".debug_loc" | |
204 | #define MACINFO_SECTION ".debug_macinfo" | |
205 | #define STR_SECTION ".debug_str" | |
af34e669 | 206 | #define RANGES_SECTION ".debug_ranges" |
b6af0555 JS |
207 | #define FRAME_SECTION ".debug_frame" |
208 | #define EH_FRAME_SECTION ".eh_frame" | |
c906108c SS |
209 | |
210 | /* local data types */ | |
211 | ||
57349743 JB |
212 | /* We hold several abbreviation tables in memory at the same time. */ |
213 | #ifndef ABBREV_HASH_SIZE | |
214 | #define ABBREV_HASH_SIZE 121 | |
215 | #endif | |
216 | ||
107d2387 AC |
217 | /* The data in a compilation unit header, after target2host |
218 | translation, looks like this. */ | |
c906108c | 219 | struct comp_unit_head |
a738430d MK |
220 | { |
221 | unsigned long length; | |
222 | short version; | |
223 | unsigned int abbrev_offset; | |
224 | unsigned char addr_size; | |
225 | unsigned char signed_addr_p; | |
57349743 | 226 | |
a738430d MK |
227 | /* Size of file offsets; either 4 or 8. */ |
228 | unsigned int offset_size; | |
57349743 | 229 | |
a738430d MK |
230 | /* Size of the length field; either 4 or 12. */ |
231 | unsigned int initial_length_size; | |
57349743 | 232 | |
a738430d MK |
233 | /* Offset to the first byte of this compilation unit header in the |
234 | .debug_info section, for resolving relative reference dies. */ | |
235 | unsigned int offset; | |
57349743 | 236 | |
a738430d MK |
237 | /* Pointer to this compilation unit header in the .debug_info |
238 | section. */ | |
fe1b8b76 | 239 | gdb_byte *cu_head_ptr; |
57349743 | 240 | |
a738430d MK |
241 | /* Pointer to the first die of this compilation unit. This will be |
242 | the first byte following the compilation unit header. */ | |
fe1b8b76 | 243 | gdb_byte *first_die_ptr; |
af34e669 | 244 | |
a738430d MK |
245 | /* Pointer to the next compilation unit header in the program. */ |
246 | struct comp_unit_head *next; | |
0d53c4c4 | 247 | |
a738430d MK |
248 | /* Base address of this compilation unit. */ |
249 | CORE_ADDR base_address; | |
0d53c4c4 | 250 | |
a738430d MK |
251 | /* Non-zero if base_address has been set. */ |
252 | int base_known; | |
253 | }; | |
c906108c | 254 | |
10b3939b DJ |
255 | /* Fixed size for the DIE hash table. */ |
256 | #ifndef REF_HASH_SIZE | |
257 | #define REF_HASH_SIZE 1021 | |
258 | #endif | |
259 | ||
e7c27a73 DJ |
260 | /* Internal state when decoding a particular compilation unit. */ |
261 | struct dwarf2_cu | |
262 | { | |
263 | /* The objfile containing this compilation unit. */ | |
264 | struct objfile *objfile; | |
265 | ||
266 | /* The header of the compilation unit. | |
267 | ||
268 | FIXME drow/2003-11-10: Some of the things from the comp_unit_head | |
f3dd6933 | 269 | should logically be moved to the dwarf2_cu structure. */ |
e7c27a73 | 270 | struct comp_unit_head header; |
e142c38c DJ |
271 | |
272 | struct function_range *first_fn, *last_fn, *cached_fn; | |
273 | ||
274 | /* The language we are debugging. */ | |
275 | enum language language; | |
276 | const struct language_defn *language_defn; | |
277 | ||
b0f35d58 DL |
278 | const char *producer; |
279 | ||
e142c38c DJ |
280 | /* The generic symbol table building routines have separate lists for |
281 | file scope symbols and all all other scopes (local scopes). So | |
282 | we need to select the right one to pass to add_symbol_to_list(). | |
283 | We do it by keeping a pointer to the correct list in list_in_scope. | |
284 | ||
285 | FIXME: The original dwarf code just treated the file scope as the | |
286 | first local scope, and all other local scopes as nested local | |
287 | scopes, and worked fine. Check to see if we really need to | |
288 | distinguish these in buildsym.c. */ | |
289 | struct pending **list_in_scope; | |
290 | ||
f3dd6933 DJ |
291 | /* DWARF abbreviation table associated with this compilation unit. */ |
292 | struct abbrev_info **dwarf2_abbrevs; | |
293 | ||
294 | /* Storage for the abbrev table. */ | |
295 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
296 | |
297 | /* Hash table holding all the loaded partial DIEs. */ | |
298 | htab_t partial_dies; | |
299 | ||
300 | /* Storage for things with the same lifetime as this read-in compilation | |
301 | unit, including partial DIEs. */ | |
302 | struct obstack comp_unit_obstack; | |
303 | ||
ae038cb0 DJ |
304 | /* When multiple dwarf2_cu structures are living in memory, this field |
305 | chains them all together, so that they can be released efficiently. | |
306 | We will probably also want a generation counter so that most-recently-used | |
307 | compilation units are cached... */ | |
308 | struct dwarf2_per_cu_data *read_in_chain; | |
309 | ||
310 | /* Backchain to our per_cu entry if the tree has been built. */ | |
311 | struct dwarf2_per_cu_data *per_cu; | |
312 | ||
313 | /* How many compilation units ago was this CU last referenced? */ | |
314 | int last_used; | |
315 | ||
10b3939b DJ |
316 | /* A hash table of die offsets for following references. */ |
317 | struct die_info *die_ref_table[REF_HASH_SIZE]; | |
318 | ||
319 | /* Full DIEs if read in. */ | |
320 | struct die_info *dies; | |
321 | ||
322 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
323 | units referenced by this one. Only set during full symbol processing; | |
324 | partial symbol tables do not have dependencies. */ | |
325 | htab_t dependencies; | |
326 | ||
cb1df416 DJ |
327 | /* Header data from the line table, during full symbol processing. */ |
328 | struct line_header *line_header; | |
329 | ||
ae038cb0 DJ |
330 | /* Mark used when releasing cached dies. */ |
331 | unsigned int mark : 1; | |
332 | ||
333 | /* This flag will be set if this compilation unit might include | |
334 | inter-compilation-unit references. */ | |
335 | unsigned int has_form_ref_addr : 1; | |
336 | ||
72bf9492 DJ |
337 | /* This flag will be set if this compilation unit includes any |
338 | DW_TAG_namespace DIEs. If we know that there are explicit | |
339 | DIEs for namespaces, we don't need to try to infer them | |
340 | from mangled names. */ | |
341 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
342 | }; |
343 | ||
10b3939b DJ |
344 | /* Persistent data held for a compilation unit, even when not |
345 | processing it. We put a pointer to this structure in the | |
346 | read_symtab_private field of the psymtab. If we encounter | |
347 | inter-compilation-unit references, we also maintain a sorted | |
348 | list of all compilation units. */ | |
349 | ||
ae038cb0 DJ |
350 | struct dwarf2_per_cu_data |
351 | { | |
5afb4e99 | 352 | /* The start offset and length of this compilation unit. 2**30-1 |
ae038cb0 DJ |
353 | bytes should suffice to store the length of any compilation unit |
354 | - if it doesn't, GDB will fall over anyway. */ | |
355 | unsigned long offset; | |
5afb4e99 | 356 | unsigned long length : 30; |
ae038cb0 DJ |
357 | |
358 | /* Flag indicating this compilation unit will be read in before | |
359 | any of the current compilation units are processed. */ | |
360 | unsigned long queued : 1; | |
361 | ||
5afb4e99 DJ |
362 | /* This flag will be set if we need to load absolutely all DIEs |
363 | for this compilation unit, instead of just the ones we think | |
364 | are interesting. It gets set if we look for a DIE in the | |
365 | hash table and don't find it. */ | |
366 | unsigned int load_all_dies : 1; | |
367 | ||
ae038cb0 DJ |
368 | /* Set iff currently read in. */ |
369 | struct dwarf2_cu *cu; | |
1c379e20 DJ |
370 | |
371 | /* If full symbols for this CU have been read in, then this field | |
372 | holds a map of DIE offsets to types. It isn't always possible | |
373 | to reconstruct this information later, so we have to preserve | |
374 | it. */ | |
1c379e20 | 375 | htab_t type_hash; |
10b3939b | 376 | |
31ffec48 DJ |
377 | /* The partial symbol table associated with this compilation unit, |
378 | or NULL for partial units (which do not have an associated | |
379 | symtab). */ | |
10b3939b | 380 | struct partial_symtab *psymtab; |
ae038cb0 DJ |
381 | }; |
382 | ||
debd256d JB |
383 | /* The line number information for a compilation unit (found in the |
384 | .debug_line section) begins with a "statement program header", | |
385 | which contains the following information. */ | |
386 | struct line_header | |
387 | { | |
388 | unsigned int total_length; | |
389 | unsigned short version; | |
390 | unsigned int header_length; | |
391 | unsigned char minimum_instruction_length; | |
392 | unsigned char default_is_stmt; | |
393 | int line_base; | |
394 | unsigned char line_range; | |
395 | unsigned char opcode_base; | |
396 | ||
397 | /* standard_opcode_lengths[i] is the number of operands for the | |
398 | standard opcode whose value is i. This means that | |
399 | standard_opcode_lengths[0] is unused, and the last meaningful | |
400 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
401 | unsigned char *standard_opcode_lengths; | |
402 | ||
403 | /* The include_directories table. NOTE! These strings are not | |
404 | allocated with xmalloc; instead, they are pointers into | |
405 | debug_line_buffer. If you try to free them, `free' will get | |
406 | indigestion. */ | |
407 | unsigned int num_include_dirs, include_dirs_size; | |
408 | char **include_dirs; | |
409 | ||
410 | /* The file_names table. NOTE! These strings are not allocated | |
411 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
412 | Don't try to free them directly. */ | |
413 | unsigned int num_file_names, file_names_size; | |
414 | struct file_entry | |
c906108c | 415 | { |
debd256d JB |
416 | char *name; |
417 | unsigned int dir_index; | |
418 | unsigned int mod_time; | |
419 | unsigned int length; | |
aaa75496 | 420 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
cb1df416 | 421 | struct symtab *symtab; /* The associated symbol table, if any. */ |
debd256d JB |
422 | } *file_names; |
423 | ||
424 | /* The start and end of the statement program following this | |
6502dd73 | 425 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 426 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 427 | }; |
c906108c SS |
428 | |
429 | /* When we construct a partial symbol table entry we only | |
430 | need this much information. */ | |
431 | struct partial_die_info | |
432 | { | |
72bf9492 | 433 | /* Offset of this DIE. */ |
c906108c | 434 | unsigned int offset; |
72bf9492 DJ |
435 | |
436 | /* DWARF-2 tag for this DIE. */ | |
437 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
438 | ||
439 | /* Language code associated with this DIE. This is only used | |
440 | for the compilation unit DIE. */ | |
441 | unsigned int language : 8; | |
442 | ||
443 | /* Assorted flags describing the data found in this DIE. */ | |
444 | unsigned int has_children : 1; | |
445 | unsigned int is_external : 1; | |
446 | unsigned int is_declaration : 1; | |
447 | unsigned int has_type : 1; | |
448 | unsigned int has_specification : 1; | |
aaa75496 | 449 | unsigned int has_stmt_list : 1; |
72bf9492 DJ |
450 | unsigned int has_pc_info : 1; |
451 | ||
452 | /* Flag set if the SCOPE field of this structure has been | |
453 | computed. */ | |
454 | unsigned int scope_set : 1; | |
455 | ||
fa4028e9 JB |
456 | /* Flag set if the DIE has a byte_size attribute. */ |
457 | unsigned int has_byte_size : 1; | |
458 | ||
72bf9492 DJ |
459 | /* The name of this DIE. Normally the value of DW_AT_name, but |
460 | sometimes DW_TAG_MIPS_linkage_name or a string computed in some | |
461 | other fashion. */ | |
c906108c | 462 | char *name; |
57c22c6c | 463 | char *dirname; |
72bf9492 DJ |
464 | |
465 | /* The scope to prepend to our children. This is generally | |
466 | allocated on the comp_unit_obstack, so will disappear | |
467 | when this compilation unit leaves the cache. */ | |
468 | char *scope; | |
469 | ||
470 | /* The location description associated with this DIE, if any. */ | |
471 | struct dwarf_block *locdesc; | |
472 | ||
473 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
474 | CORE_ADDR lowpc; |
475 | CORE_ADDR highpc; | |
72bf9492 DJ |
476 | |
477 | /* Pointer into the info_buffer pointing at the target of | |
478 | DW_AT_sibling, if any. */ | |
fe1b8b76 | 479 | gdb_byte *sibling; |
72bf9492 DJ |
480 | |
481 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
482 | DW_AT_specification (or DW_AT_abstract_origin or | |
483 | DW_AT_extension). */ | |
484 | unsigned int spec_offset; | |
485 | ||
aaa75496 JB |
486 | /* If HAS_STMT_LIST, the offset of the Line Number Information data. */ |
487 | unsigned int line_offset; | |
488 | ||
72bf9492 DJ |
489 | /* Pointers to this DIE's parent, first child, and next sibling, |
490 | if any. */ | |
491 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
492 | }; |
493 | ||
494 | /* This data structure holds the information of an abbrev. */ | |
495 | struct abbrev_info | |
496 | { | |
497 | unsigned int number; /* number identifying abbrev */ | |
498 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
499 | unsigned short has_children; /* boolean */ |
500 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
501 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
502 | struct abbrev_info *next; /* next in chain */ | |
503 | }; | |
504 | ||
505 | struct attr_abbrev | |
506 | { | |
507 | enum dwarf_attribute name; | |
508 | enum dwarf_form form; | |
509 | }; | |
510 | ||
511 | /* This data structure holds a complete die structure. */ | |
512 | struct die_info | |
513 | { | |
c5aa993b | 514 | enum dwarf_tag tag; /* Tag indicating type of die */ |
c5aa993b JM |
515 | unsigned int abbrev; /* Abbrev number */ |
516 | unsigned int offset; /* Offset in .debug_info section */ | |
517 | unsigned int num_attrs; /* Number of attributes */ | |
518 | struct attribute *attrs; /* An array of attributes */ | |
519 | struct die_info *next_ref; /* Next die in ref hash table */ | |
78ba4af6 JB |
520 | |
521 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
522 | points to this die's parent; CHILD points to the first child of | |
523 | this node; and all the children of a given node are chained | |
524 | together via their SIBLING fields, terminated by a die whose | |
525 | tag is zero. */ | |
639d11d3 DC |
526 | struct die_info *child; /* Its first child, if any. */ |
527 | struct die_info *sibling; /* Its next sibling, if any. */ | |
528 | struct die_info *parent; /* Its parent, if any. */ | |
78ba4af6 | 529 | |
c5aa993b | 530 | struct type *type; /* Cached type information */ |
c906108c SS |
531 | }; |
532 | ||
533 | /* Attributes have a name and a value */ | |
534 | struct attribute | |
535 | { | |
536 | enum dwarf_attribute name; | |
537 | enum dwarf_form form; | |
538 | union | |
539 | { | |
540 | char *str; | |
541 | struct dwarf_block *blk; | |
ce5d95e1 JB |
542 | unsigned long unsnd; |
543 | long int snd; | |
c906108c SS |
544 | CORE_ADDR addr; |
545 | } | |
546 | u; | |
547 | }; | |
548 | ||
5fb290d7 DJ |
549 | struct function_range |
550 | { | |
551 | const char *name; | |
552 | CORE_ADDR lowpc, highpc; | |
553 | int seen_line; | |
554 | struct function_range *next; | |
555 | }; | |
556 | ||
c906108c SS |
557 | /* Get at parts of an attribute structure */ |
558 | ||
559 | #define DW_STRING(attr) ((attr)->u.str) | |
560 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
561 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
562 | #define DW_SND(attr) ((attr)->u.snd) | |
563 | #define DW_ADDR(attr) ((attr)->u.addr) | |
564 | ||
565 | /* Blocks are a bunch of untyped bytes. */ | |
566 | struct dwarf_block | |
567 | { | |
568 | unsigned int size; | |
fe1b8b76 | 569 | gdb_byte *data; |
c906108c SS |
570 | }; |
571 | ||
c906108c SS |
572 | #ifndef ATTR_ALLOC_CHUNK |
573 | #define ATTR_ALLOC_CHUNK 4 | |
574 | #endif | |
575 | ||
c906108c SS |
576 | /* Allocate fields for structs, unions and enums in this size. */ |
577 | #ifndef DW_FIELD_ALLOC_CHUNK | |
578 | #define DW_FIELD_ALLOC_CHUNK 4 | |
579 | #endif | |
580 | ||
c906108c SS |
581 | /* A zeroed version of a partial die for initialization purposes. */ |
582 | static struct partial_die_info zeroed_partial_die; | |
583 | ||
c906108c SS |
584 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
585 | but this would require a corresponding change in unpack_field_as_long | |
586 | and friends. */ | |
587 | static int bits_per_byte = 8; | |
588 | ||
589 | /* The routines that read and process dies for a C struct or C++ class | |
590 | pass lists of data member fields and lists of member function fields | |
591 | in an instance of a field_info structure, as defined below. */ | |
592 | struct field_info | |
c5aa993b JM |
593 | { |
594 | /* List of data member and baseclasses fields. */ | |
595 | struct nextfield | |
596 | { | |
597 | struct nextfield *next; | |
598 | int accessibility; | |
599 | int virtuality; | |
600 | struct field field; | |
601 | } | |
602 | *fields; | |
c906108c | 603 | |
c5aa993b JM |
604 | /* Number of fields. */ |
605 | int nfields; | |
c906108c | 606 | |
c5aa993b JM |
607 | /* Number of baseclasses. */ |
608 | int nbaseclasses; | |
c906108c | 609 | |
c5aa993b JM |
610 | /* Set if the accesibility of one of the fields is not public. */ |
611 | int non_public_fields; | |
c906108c | 612 | |
c5aa993b JM |
613 | /* Member function fields array, entries are allocated in the order they |
614 | are encountered in the object file. */ | |
615 | struct nextfnfield | |
616 | { | |
617 | struct nextfnfield *next; | |
618 | struct fn_field fnfield; | |
619 | } | |
620 | *fnfields; | |
c906108c | 621 | |
c5aa993b JM |
622 | /* Member function fieldlist array, contains name of possibly overloaded |
623 | member function, number of overloaded member functions and a pointer | |
624 | to the head of the member function field chain. */ | |
625 | struct fnfieldlist | |
626 | { | |
627 | char *name; | |
628 | int length; | |
629 | struct nextfnfield *head; | |
630 | } | |
631 | *fnfieldlists; | |
c906108c | 632 | |
c5aa993b JM |
633 | /* Number of entries in the fnfieldlists array. */ |
634 | int nfnfields; | |
635 | }; | |
c906108c | 636 | |
10b3939b DJ |
637 | /* One item on the queue of compilation units to read in full symbols |
638 | for. */ | |
639 | struct dwarf2_queue_item | |
640 | { | |
641 | struct dwarf2_per_cu_data *per_cu; | |
642 | struct dwarf2_queue_item *next; | |
643 | }; | |
644 | ||
645 | /* The current queue. */ | |
646 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
647 | ||
ae038cb0 DJ |
648 | /* Loaded secondary compilation units are kept in memory until they |
649 | have not been referenced for the processing of this many | |
650 | compilation units. Set this to zero to disable caching. Cache | |
651 | sizes of up to at least twenty will improve startup time for | |
652 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
653 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
654 | static void |
655 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
656 | struct cmd_list_element *c, const char *value) | |
657 | { | |
658 | fprintf_filtered (file, _("\ | |
659 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
660 | value); | |
661 | } | |
662 | ||
ae038cb0 | 663 | |
c906108c SS |
664 | /* Various complaints about symbol reading that don't abort the process */ |
665 | ||
4d3c2250 KB |
666 | static void |
667 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 668 | { |
4d3c2250 | 669 | complaint (&symfile_complaints, |
e2e0b3e5 | 670 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
671 | } |
672 | ||
25e43795 DJ |
673 | static void |
674 | dwarf2_debug_line_missing_file_complaint (void) | |
675 | { | |
676 | complaint (&symfile_complaints, | |
677 | _(".debug_line section has line data without a file")); | |
678 | } | |
679 | ||
4d3c2250 KB |
680 | static void |
681 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 682 | { |
e2e0b3e5 | 683 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
684 | } |
685 | ||
4d3c2250 KB |
686 | static void |
687 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
688 | int arg3) | |
2e276125 | 689 | { |
4d3c2250 | 690 | complaint (&symfile_complaints, |
e2e0b3e5 | 691 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
692 | arg2, arg3); |
693 | } | |
694 | ||
695 | static void | |
696 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 697 | { |
4d3c2250 | 698 | complaint (&symfile_complaints, |
e2e0b3e5 | 699 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
700 | } |
701 | ||
702 | static void | |
703 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 704 | { |
4d3c2250 | 705 | complaint (&symfile_complaints, |
e2e0b3e5 | 706 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
707 | arg1); |
708 | } | |
709 | ||
710 | static void | |
711 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 712 | { |
4d3c2250 | 713 | complaint (&symfile_complaints, |
e2e0b3e5 | 714 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 715 | } |
c906108c | 716 | |
c906108c SS |
717 | /* local function prototypes */ |
718 | ||
4efb68b1 | 719 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
720 | |
721 | #if 0 | |
a14ed312 | 722 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
723 | #endif |
724 | ||
aaa75496 JB |
725 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
726 | struct objfile *); | |
727 | ||
728 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
729 | struct partial_die_info *, | |
730 | struct partial_symtab *); | |
731 | ||
a14ed312 | 732 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 733 | |
72bf9492 DJ |
734 | static void scan_partial_symbols (struct partial_die_info *, |
735 | CORE_ADDR *, CORE_ADDR *, | |
736 | struct dwarf2_cu *); | |
c906108c | 737 | |
72bf9492 DJ |
738 | static void add_partial_symbol (struct partial_die_info *, |
739 | struct dwarf2_cu *); | |
63d06c5c | 740 | |
72bf9492 | 741 | static int pdi_needs_namespace (enum dwarf_tag tag); |
91c24f0a | 742 | |
72bf9492 DJ |
743 | static void add_partial_namespace (struct partial_die_info *pdi, |
744 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
745 | struct dwarf2_cu *cu); | |
63d06c5c | 746 | |
72bf9492 DJ |
747 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
748 | struct dwarf2_cu *cu); | |
91c24f0a | 749 | |
fe1b8b76 JB |
750 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
751 | gdb_byte *info_ptr, | |
752 | bfd *abfd, | |
753 | struct dwarf2_cu *cu); | |
91c24f0a | 754 | |
a14ed312 | 755 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 756 | |
a14ed312 | 757 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 758 | |
fe1b8b76 | 759 | gdb_byte *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 760 | |
e7c27a73 | 761 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 762 | |
f3dd6933 | 763 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 764 | |
fe1b8b76 | 765 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 766 | struct dwarf2_cu *); |
72bf9492 | 767 | |
57349743 | 768 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 769 | struct dwarf2_cu *); |
c906108c | 770 | |
fe1b8b76 | 771 | static struct partial_die_info *load_partial_dies (bfd *, gdb_byte *, int, |
72bf9492 DJ |
772 | struct dwarf2_cu *); |
773 | ||
fe1b8b76 JB |
774 | static gdb_byte *read_partial_die (struct partial_die_info *, |
775 | struct abbrev_info *abbrev, unsigned int, | |
776 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 777 | |
72bf9492 | 778 | static struct partial_die_info *find_partial_die (unsigned long, |
10b3939b | 779 | struct dwarf2_cu *); |
72bf9492 DJ |
780 | |
781 | static void fixup_partial_die (struct partial_die_info *, | |
782 | struct dwarf2_cu *); | |
783 | ||
fe1b8b76 JB |
784 | static gdb_byte *read_full_die (struct die_info **, bfd *, gdb_byte *, |
785 | struct dwarf2_cu *, int *); | |
c906108c | 786 | |
fe1b8b76 JB |
787 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
788 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 789 | |
fe1b8b76 JB |
790 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
791 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 792 | |
fe1b8b76 | 793 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 794 | |
fe1b8b76 | 795 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 796 | |
fe1b8b76 | 797 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 798 | |
fe1b8b76 | 799 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 800 | |
fe1b8b76 | 801 | static unsigned long read_8_bytes (bfd *, gdb_byte *); |
c906108c | 802 | |
fe1b8b76 | 803 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 804 | unsigned int *); |
c906108c | 805 | |
fe1b8b76 | 806 | static LONGEST read_initial_length (bfd *, gdb_byte *, |
891d2f0b | 807 | struct comp_unit_head *, unsigned int *); |
613e1657 | 808 | |
fe1b8b76 | 809 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
891d2f0b | 810 | unsigned int *); |
613e1657 | 811 | |
fe1b8b76 | 812 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 813 | |
fe1b8b76 | 814 | static char *read_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 815 | |
fe1b8b76 JB |
816 | static char *read_indirect_string (bfd *, gdb_byte *, |
817 | const struct comp_unit_head *, | |
818 | unsigned int *); | |
4bdf3d34 | 819 | |
fe1b8b76 | 820 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 821 | |
fe1b8b76 | 822 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 823 | |
fe1b8b76 | 824 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 825 | |
e142c38c | 826 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 827 | |
e142c38c DJ |
828 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
829 | struct dwarf2_cu *); | |
c906108c | 830 | |
05cf31d1 JB |
831 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
832 | struct dwarf2_cu *cu); | |
833 | ||
e142c38c | 834 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 835 | |
e142c38c DJ |
836 | static struct die_info *die_specification (struct die_info *die, |
837 | struct dwarf2_cu *); | |
63d06c5c | 838 | |
debd256d JB |
839 | static void free_line_header (struct line_header *lh); |
840 | ||
aaa75496 JB |
841 | static void add_file_name (struct line_header *, char *, unsigned int, |
842 | unsigned int, unsigned int); | |
843 | ||
debd256d JB |
844 | static struct line_header *(dwarf_decode_line_header |
845 | (unsigned int offset, | |
e7c27a73 | 846 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
847 | |
848 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 849 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 850 | |
4f1520fb | 851 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 852 | |
a14ed312 | 853 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 854 | struct dwarf2_cu *); |
c906108c | 855 | |
a14ed312 | 856 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 857 | struct dwarf2_cu *); |
c906108c | 858 | |
2df3850c JM |
859 | static void dwarf2_const_value_data (struct attribute *attr, |
860 | struct symbol *sym, | |
861 | int bits); | |
862 | ||
e7c27a73 | 863 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 864 | |
e7c27a73 DJ |
865 | static struct type *die_containing_type (struct die_info *, |
866 | struct dwarf2_cu *); | |
c906108c | 867 | |
e7c27a73 | 868 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 869 | |
e7c27a73 | 870 | static void read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 871 | |
086ed43d | 872 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 873 | |
fe1b8b76 JB |
874 | static char *typename_concat (struct obstack *, |
875 | const char *prefix, | |
876 | const char *suffix, | |
987504bb | 877 | struct dwarf2_cu *); |
63d06c5c | 878 | |
e7c27a73 | 879 | static void read_typedef (struct die_info *, struct dwarf2_cu *); |
c906108c | 880 | |
e7c27a73 | 881 | static void read_base_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 882 | |
a02abb62 JB |
883 | static void read_subrange_type (struct die_info *die, struct dwarf2_cu *cu); |
884 | ||
e7c27a73 | 885 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 886 | |
e7c27a73 | 887 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 888 | |
e7c27a73 | 889 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 890 | |
a14ed312 | 891 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 892 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 893 | |
fae299cd DC |
894 | static void get_scope_pc_bounds (struct die_info *, |
895 | CORE_ADDR *, CORE_ADDR *, | |
896 | struct dwarf2_cu *); | |
897 | ||
801e3a5b JB |
898 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
899 | CORE_ADDR, struct dwarf2_cu *); | |
900 | ||
a14ed312 | 901 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 902 | struct dwarf2_cu *); |
c906108c | 903 | |
a14ed312 | 904 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 905 | struct type *, struct dwarf2_cu *); |
c906108c | 906 | |
a14ed312 | 907 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 908 | struct die_info *, struct type *, |
e7c27a73 | 909 | struct dwarf2_cu *); |
c906108c | 910 | |
a14ed312 | 911 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 912 | struct type *, struct dwarf2_cu *); |
c906108c | 913 | |
134d01f1 DJ |
914 | static void read_structure_type (struct die_info *, struct dwarf2_cu *); |
915 | ||
916 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 917 | |
8176b9b8 DC |
918 | static char *determine_class_name (struct die_info *die, struct dwarf2_cu *cu); |
919 | ||
e7c27a73 | 920 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 921 | |
e7c27a73 | 922 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 923 | |
38d518c9 | 924 | static const char *namespace_name (struct die_info *die, |
e142c38c | 925 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 926 | |
134d01f1 DJ |
927 | static void read_enumeration_type (struct die_info *, struct dwarf2_cu *); |
928 | ||
929 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 930 | |
e7c27a73 | 931 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 932 | |
e7c27a73 | 933 | static void read_array_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 934 | |
7ca2d3a3 DL |
935 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
936 | struct dwarf2_cu *); | |
937 | ||
e7c27a73 | 938 | static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 939 | |
e7c27a73 DJ |
940 | static void read_tag_ptr_to_member_type (struct die_info *, |
941 | struct dwarf2_cu *); | |
c906108c | 942 | |
e7c27a73 | 943 | static void read_tag_reference_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 944 | |
e7c27a73 | 945 | static void read_tag_const_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 946 | |
e7c27a73 | 947 | static void read_tag_volatile_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 948 | |
e7c27a73 | 949 | static void read_tag_string_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 950 | |
e7c27a73 | 951 | static void read_subroutine_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 952 | |
fe1b8b76 | 953 | static struct die_info *read_comp_unit (gdb_byte *, bfd *, struct dwarf2_cu *); |
c906108c | 954 | |
fe1b8b76 | 955 | static struct die_info *read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 956 | struct dwarf2_cu *, |
fe1b8b76 | 957 | gdb_byte **new_info_ptr, |
639d11d3 DC |
958 | struct die_info *parent); |
959 | ||
fe1b8b76 | 960 | static struct die_info *read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 961 | struct dwarf2_cu *, |
fe1b8b76 | 962 | gdb_byte **new_info_ptr, |
639d11d3 DC |
963 | struct die_info *parent); |
964 | ||
a14ed312 | 965 | static void free_die_list (struct die_info *); |
c906108c | 966 | |
e7c27a73 | 967 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 968 | |
e142c38c | 969 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 970 | |
e142c38c | 971 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 972 | |
e142c38c DJ |
973 | static struct die_info *dwarf2_extension (struct die_info *die, |
974 | struct dwarf2_cu *); | |
9219021c | 975 | |
a14ed312 | 976 | static char *dwarf_tag_name (unsigned int); |
c906108c | 977 | |
a14ed312 | 978 | static char *dwarf_attr_name (unsigned int); |
c906108c | 979 | |
a14ed312 | 980 | static char *dwarf_form_name (unsigned int); |
c906108c | 981 | |
a14ed312 | 982 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 983 | |
a14ed312 | 984 | static char *dwarf_bool_name (unsigned int); |
c906108c | 985 | |
a14ed312 | 986 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
987 | |
988 | #if 0 | |
a14ed312 | 989 | static char *dwarf_cfi_name (unsigned int); |
c906108c | 990 | |
a14ed312 | 991 | struct die_info *copy_die (struct die_info *); |
c906108c SS |
992 | #endif |
993 | ||
f9aca02d | 994 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 995 | |
f9aca02d | 996 | static void dump_die (struct die_info *); |
c906108c | 997 | |
f9aca02d | 998 | static void dump_die_list (struct die_info *); |
c906108c | 999 | |
10b3939b DJ |
1000 | static void store_in_ref_table (unsigned int, struct die_info *, |
1001 | struct dwarf2_cu *); | |
c906108c | 1002 | |
e142c38c DJ |
1003 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
1004 | struct dwarf2_cu *); | |
c906108c | 1005 | |
a02abb62 JB |
1006 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
1007 | ||
10b3939b DJ |
1008 | static struct die_info *follow_die_ref (struct die_info *, |
1009 | struct attribute *, | |
1010 | struct dwarf2_cu *); | |
c906108c | 1011 | |
c906108c SS |
1012 | /* memory allocation interface */ |
1013 | ||
7b5a2f43 | 1014 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1015 | |
f3dd6933 | 1016 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1017 | |
a14ed312 | 1018 | static struct die_info *dwarf_alloc_die (void); |
c906108c | 1019 | |
e142c38c | 1020 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1021 | |
e142c38c DJ |
1022 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1023 | struct dwarf2_cu *); | |
5fb290d7 | 1024 | |
2e276125 | 1025 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1026 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1027 | |
8e19ed76 PS |
1028 | static int attr_form_is_block (struct attribute *); |
1029 | ||
3690dd37 JB |
1030 | static int attr_form_is_section_offset (struct attribute *); |
1031 | ||
1032 | static int attr_form_is_constant (struct attribute *); | |
1033 | ||
93e7bd98 DJ |
1034 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1035 | struct symbol *sym, | |
1036 | struct dwarf2_cu *cu); | |
4c2df51b | 1037 | |
fe1b8b76 JB |
1038 | static gdb_byte *skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, |
1039 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1040 | |
72bf9492 DJ |
1041 | static void free_stack_comp_unit (void *); |
1042 | ||
72bf9492 DJ |
1043 | static hashval_t partial_die_hash (const void *item); |
1044 | ||
1045 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1046 | ||
ae038cb0 DJ |
1047 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
1048 | (unsigned long offset, struct objfile *objfile); | |
1049 | ||
1050 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
1051 | (unsigned long offset, struct objfile *objfile); | |
1052 | ||
1053 | static void free_one_comp_unit (void *); | |
1054 | ||
1055 | static void free_cached_comp_units (void *); | |
1056 | ||
1057 | static void age_cached_comp_units (void); | |
1058 | ||
1059 | static void free_one_cached_comp_unit (void *); | |
1060 | ||
1c379e20 DJ |
1061 | static void set_die_type (struct die_info *, struct type *, |
1062 | struct dwarf2_cu *); | |
1063 | ||
1c379e20 DJ |
1064 | static void reset_die_and_siblings_types (struct die_info *, |
1065 | struct dwarf2_cu *); | |
1c379e20 | 1066 | |
ae038cb0 DJ |
1067 | static void create_all_comp_units (struct objfile *); |
1068 | ||
31ffec48 DJ |
1069 | static struct dwarf2_cu *load_full_comp_unit (struct dwarf2_per_cu_data *, |
1070 | struct objfile *); | |
10b3939b DJ |
1071 | |
1072 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1073 | ||
1074 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1075 | struct dwarf2_per_cu_data *); | |
1076 | ||
ae038cb0 DJ |
1077 | static void dwarf2_mark (struct dwarf2_cu *); |
1078 | ||
1079 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1080 | ||
72019c9c GM |
1081 | static void read_set_type (struct die_info *, struct dwarf2_cu *); |
1082 | ||
1083 | ||
c906108c SS |
1084 | /* Try to locate the sections we need for DWARF 2 debugging |
1085 | information and return true if we have enough to do something. */ | |
1086 | ||
1087 | int | |
6502dd73 | 1088 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1089 | { |
6502dd73 DJ |
1090 | struct dwarf2_per_objfile *data; |
1091 | ||
1092 | /* Initialize per-objfile state. */ | |
1093 | data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
1094 | memset (data, 0, sizeof (*data)); | |
1095 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1096 | dwarf2_per_objfile = data; | |
1097 | ||
188dd5d6 DJ |
1098 | dwarf_info_section = 0; |
1099 | dwarf_abbrev_section = 0; | |
1100 | dwarf_line_section = 0; | |
1101 | dwarf_str_section = 0; | |
1102 | dwarf_macinfo_section = 0; | |
1103 | dwarf_frame_section = 0; | |
1104 | dwarf_eh_frame_section = 0; | |
1105 | dwarf_ranges_section = 0; | |
1106 | dwarf_loc_section = 0; | |
af34e669 | 1107 | |
6502dd73 | 1108 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 1109 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
1110 | } |
1111 | ||
1112 | /* This function is mapped across the sections and remembers the | |
1113 | offset and size of each of the debugging sections we are interested | |
1114 | in. */ | |
1115 | ||
1116 | static void | |
72dca2f5 | 1117 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1118 | { |
6314a349 | 1119 | if (strcmp (sectp->name, INFO_SECTION) == 0) |
c906108c | 1120 | { |
2c500098 | 1121 | dwarf2_per_objfile->info_size = bfd_get_section_size (sectp); |
086df311 | 1122 | dwarf_info_section = sectp; |
c906108c | 1123 | } |
6314a349 | 1124 | else if (strcmp (sectp->name, ABBREV_SECTION) == 0) |
c906108c | 1125 | { |
2c500098 | 1126 | dwarf2_per_objfile->abbrev_size = bfd_get_section_size (sectp); |
086df311 | 1127 | dwarf_abbrev_section = sectp; |
c906108c | 1128 | } |
6314a349 | 1129 | else if (strcmp (sectp->name, LINE_SECTION) == 0) |
c906108c | 1130 | { |
2c500098 | 1131 | dwarf2_per_objfile->line_size = bfd_get_section_size (sectp); |
086df311 | 1132 | dwarf_line_section = sectp; |
c906108c | 1133 | } |
6314a349 | 1134 | else if (strcmp (sectp->name, PUBNAMES_SECTION) == 0) |
c906108c | 1135 | { |
2c500098 | 1136 | dwarf2_per_objfile->pubnames_size = bfd_get_section_size (sectp); |
086df311 | 1137 | dwarf_pubnames_section = sectp; |
c906108c | 1138 | } |
6314a349 | 1139 | else if (strcmp (sectp->name, ARANGES_SECTION) == 0) |
c906108c | 1140 | { |
2c500098 | 1141 | dwarf2_per_objfile->aranges_size = bfd_get_section_size (sectp); |
086df311 | 1142 | dwarf_aranges_section = sectp; |
c906108c | 1143 | } |
6314a349 | 1144 | else if (strcmp (sectp->name, LOC_SECTION) == 0) |
c906108c | 1145 | { |
2c500098 | 1146 | dwarf2_per_objfile->loc_size = bfd_get_section_size (sectp); |
086df311 | 1147 | dwarf_loc_section = sectp; |
c906108c | 1148 | } |
6314a349 | 1149 | else if (strcmp (sectp->name, MACINFO_SECTION) == 0) |
c906108c | 1150 | { |
2c500098 | 1151 | dwarf2_per_objfile->macinfo_size = bfd_get_section_size (sectp); |
0cf824c9 | 1152 | dwarf_macinfo_section = sectp; |
c906108c | 1153 | } |
6314a349 | 1154 | else if (strcmp (sectp->name, STR_SECTION) == 0) |
c906108c | 1155 | { |
2c500098 | 1156 | dwarf2_per_objfile->str_size = bfd_get_section_size (sectp); |
086df311 | 1157 | dwarf_str_section = sectp; |
c906108c | 1158 | } |
6314a349 | 1159 | else if (strcmp (sectp->name, FRAME_SECTION) == 0) |
b6af0555 | 1160 | { |
2c500098 | 1161 | dwarf2_per_objfile->frame_size = bfd_get_section_size (sectp); |
086df311 | 1162 | dwarf_frame_section = sectp; |
b6af0555 | 1163 | } |
6314a349 | 1164 | else if (strcmp (sectp->name, EH_FRAME_SECTION) == 0) |
b6af0555 | 1165 | { |
3799ccc6 EZ |
1166 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1167 | if (aflag & SEC_HAS_CONTENTS) | |
1168 | { | |
2c500098 | 1169 | dwarf2_per_objfile->eh_frame_size = bfd_get_section_size (sectp); |
3799ccc6 EZ |
1170 | dwarf_eh_frame_section = sectp; |
1171 | } | |
b6af0555 | 1172 | } |
6314a349 | 1173 | else if (strcmp (sectp->name, RANGES_SECTION) == 0) |
af34e669 | 1174 | { |
2c500098 | 1175 | dwarf2_per_objfile->ranges_size = bfd_get_section_size (sectp); |
6f10aeb1 | 1176 | dwarf_ranges_section = sectp; |
af34e669 | 1177 | } |
72dca2f5 FR |
1178 | |
1179 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) | |
1180 | && bfd_section_vma (abfd, sectp) == 0) | |
1181 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1182 | } |
1183 | ||
1184 | /* Build a partial symbol table. */ | |
1185 | ||
1186 | void | |
fba45db2 | 1187 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c | 1188 | { |
c906108c SS |
1189 | /* We definitely need the .debug_info and .debug_abbrev sections */ |
1190 | ||
6502dd73 DJ |
1191 | dwarf2_per_objfile->info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1192 | dwarf2_per_objfile->abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
188dd5d6 DJ |
1193 | |
1194 | if (dwarf_line_section) | |
6502dd73 | 1195 | dwarf2_per_objfile->line_buffer = dwarf2_read_section (objfile, dwarf_line_section); |
41ff2da1 | 1196 | else |
6502dd73 | 1197 | dwarf2_per_objfile->line_buffer = NULL; |
c906108c | 1198 | |
188dd5d6 | 1199 | if (dwarf_str_section) |
6502dd73 | 1200 | dwarf2_per_objfile->str_buffer = dwarf2_read_section (objfile, dwarf_str_section); |
4bdf3d34 | 1201 | else |
6502dd73 | 1202 | dwarf2_per_objfile->str_buffer = NULL; |
4bdf3d34 | 1203 | |
188dd5d6 | 1204 | if (dwarf_macinfo_section) |
6502dd73 | 1205 | dwarf2_per_objfile->macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1206 | dwarf_macinfo_section); |
2e276125 | 1207 | else |
6502dd73 | 1208 | dwarf2_per_objfile->macinfo_buffer = NULL; |
2e276125 | 1209 | |
188dd5d6 | 1210 | if (dwarf_ranges_section) |
6502dd73 | 1211 | dwarf2_per_objfile->ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); |
af34e669 | 1212 | else |
6502dd73 | 1213 | dwarf2_per_objfile->ranges_buffer = NULL; |
af34e669 | 1214 | |
188dd5d6 | 1215 | if (dwarf_loc_section) |
6502dd73 | 1216 | dwarf2_per_objfile->loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); |
0d53c4c4 | 1217 | else |
6502dd73 | 1218 | dwarf2_per_objfile->loc_buffer = NULL; |
0d53c4c4 | 1219 | |
ef96bde8 EZ |
1220 | if (mainline |
1221 | || (objfile->global_psymbols.size == 0 | |
1222 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1223 | { |
1224 | init_psymbol_list (objfile, 1024); | |
1225 | } | |
1226 | ||
1227 | #if 0 | |
1228 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1229 | { | |
d4f3574e | 1230 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1231 | .debug_pubnames sections */ |
1232 | ||
d4f3574e | 1233 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1234 | } |
1235 | else | |
1236 | #endif | |
1237 | /* only test this case for now */ | |
c5aa993b | 1238 | { |
c906108c | 1239 | /* In this case we have to work a bit harder */ |
d4f3574e | 1240 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1241 | } |
1242 | } | |
1243 | ||
1244 | #if 0 | |
1245 | /* Build the partial symbol table from the information in the | |
1246 | .debug_pubnames and .debug_aranges sections. */ | |
1247 | ||
1248 | static void | |
fba45db2 | 1249 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1250 | { |
1251 | bfd *abfd = objfile->obfd; | |
1252 | char *aranges_buffer, *pubnames_buffer; | |
1253 | char *aranges_ptr, *pubnames_ptr; | |
1254 | unsigned int entry_length, version, info_offset, info_size; | |
1255 | ||
1256 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1257 | dwarf_pubnames_section); |
c906108c | 1258 | pubnames_ptr = pubnames_buffer; |
6502dd73 | 1259 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames_size) |
c906108c | 1260 | { |
613e1657 | 1261 | struct comp_unit_head cu_header; |
891d2f0b | 1262 | unsigned int bytes_read; |
613e1657 KB |
1263 | |
1264 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
891d2f0b | 1265 | &bytes_read); |
613e1657 | 1266 | pubnames_ptr += bytes_read; |
c906108c SS |
1267 | version = read_1_byte (abfd, pubnames_ptr); |
1268 | pubnames_ptr += 1; | |
1269 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1270 | pubnames_ptr += 4; | |
1271 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1272 | pubnames_ptr += 4; | |
1273 | } | |
1274 | ||
1275 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1276 | dwarf_aranges_section); |
c906108c SS |
1277 | |
1278 | } | |
1279 | #endif | |
1280 | ||
107d2387 | 1281 | /* Read in the comp unit header information from the debug_info at |
917c78fc | 1282 | info_ptr. */ |
107d2387 | 1283 | |
fe1b8b76 | 1284 | static gdb_byte * |
107d2387 | 1285 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 1286 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
1287 | { |
1288 | int signed_addr; | |
891d2f0b | 1289 | unsigned int bytes_read; |
613e1657 KB |
1290 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, |
1291 | &bytes_read); | |
1292 | info_ptr += bytes_read; | |
107d2387 AC |
1293 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1294 | info_ptr += 2; | |
613e1657 KB |
1295 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1296 | &bytes_read); | |
1297 | info_ptr += bytes_read; | |
107d2387 AC |
1298 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1299 | info_ptr += 1; | |
1300 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1301 | if (signed_addr < 0) | |
8e65ff28 | 1302 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1303 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 AC |
1304 | cu_header->signed_addr_p = signed_addr; |
1305 | return info_ptr; | |
1306 | } | |
1307 | ||
fe1b8b76 JB |
1308 | static gdb_byte * |
1309 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
72bf9492 DJ |
1310 | bfd *abfd) |
1311 | { | |
fe1b8b76 | 1312 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
1313 | |
1314 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1315 | ||
2b949cb6 | 1316 | if (header->version != 2 && header->version != 3) |
8a3fe4f8 AC |
1317 | error (_("Dwarf Error: wrong version in compilation unit header " |
1318 | "(is %d, should be %d) [in module %s]"), header->version, | |
72bf9492 DJ |
1319 | 2, bfd_get_filename (abfd)); |
1320 | ||
1321 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev_size) | |
8a3fe4f8 AC |
1322 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
1323 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 DJ |
1324 | (long) header->abbrev_offset, |
1325 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1326 | bfd_get_filename (abfd)); | |
1327 | ||
1328 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
1329 | > dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
8a3fe4f8 AC |
1330 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
1331 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 DJ |
1332 | (long) header->length, |
1333 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1334 | bfd_get_filename (abfd)); | |
1335 | ||
1336 | return info_ptr; | |
1337 | } | |
1338 | ||
aaa75496 JB |
1339 | /* Allocate a new partial symtab for file named NAME and mark this new |
1340 | partial symtab as being an include of PST. */ | |
1341 | ||
1342 | static void | |
1343 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1344 | struct objfile *objfile) | |
1345 | { | |
1346 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1347 | ||
1348 | subpst->section_offsets = pst->section_offsets; | |
1349 | subpst->textlow = 0; | |
1350 | subpst->texthigh = 0; | |
1351 | ||
1352 | subpst->dependencies = (struct partial_symtab **) | |
1353 | obstack_alloc (&objfile->objfile_obstack, | |
1354 | sizeof (struct partial_symtab *)); | |
1355 | subpst->dependencies[0] = pst; | |
1356 | subpst->number_of_dependencies = 1; | |
1357 | ||
1358 | subpst->globals_offset = 0; | |
1359 | subpst->n_global_syms = 0; | |
1360 | subpst->statics_offset = 0; | |
1361 | subpst->n_static_syms = 0; | |
1362 | subpst->symtab = NULL; | |
1363 | subpst->read_symtab = pst->read_symtab; | |
1364 | subpst->readin = 0; | |
1365 | ||
1366 | /* No private part is necessary for include psymtabs. This property | |
1367 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1368 | the regular ones. */ |
58a9656e | 1369 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1370 | } |
1371 | ||
1372 | /* Read the Line Number Program data and extract the list of files | |
1373 | included by the source file represented by PST. Build an include | |
1374 | partial symtab for each of these included files. | |
1375 | ||
1376 | This procedure assumes that there *is* a Line Number Program in | |
1377 | the given CU. Callers should check that PDI->HAS_STMT_LIST is set | |
1378 | before calling this procedure. */ | |
1379 | ||
1380 | static void | |
1381 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
1382 | struct partial_die_info *pdi, | |
1383 | struct partial_symtab *pst) | |
1384 | { | |
1385 | struct objfile *objfile = cu->objfile; | |
1386 | bfd *abfd = objfile->obfd; | |
1387 | struct line_header *lh; | |
1388 | ||
1389 | lh = dwarf_decode_line_header (pdi->line_offset, abfd, cu); | |
1390 | if (lh == NULL) | |
1391 | return; /* No linetable, so no includes. */ | |
1392 | ||
1393 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1394 | ||
1395 | free_line_header (lh); | |
1396 | } | |
1397 | ||
1398 | ||
c906108c SS |
1399 | /* Build the partial symbol table by doing a quick pass through the |
1400 | .debug_info and .debug_abbrev sections. */ | |
1401 | ||
1402 | static void | |
fba45db2 | 1403 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1404 | { |
1405 | /* Instead of reading this into a big buffer, we should probably use | |
1406 | mmap() on architectures that support it. (FIXME) */ | |
1407 | bfd *abfd = objfile->obfd; | |
fe1b8b76 JB |
1408 | gdb_byte *info_ptr; |
1409 | gdb_byte *beg_of_comp_unit; | |
c906108c SS |
1410 | struct partial_die_info comp_unit_die; |
1411 | struct partial_symtab *pst; | |
ae038cb0 | 1412 | struct cleanup *back_to; |
e142c38c | 1413 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1414 | |
6502dd73 | 1415 | info_ptr = dwarf2_per_objfile->info_buffer; |
c906108c | 1416 | |
ae038cb0 DJ |
1417 | /* Any cached compilation units will be linked by the per-objfile |
1418 | read_in_chain. Make sure to free them when we're done. */ | |
1419 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
1420 | ||
10b3939b DJ |
1421 | create_all_comp_units (objfile); |
1422 | ||
6502dd73 | 1423 | /* Since the objects we're extracting from .debug_info vary in |
af703f96 | 1424 | length, only the individual functions to extract them (like |
72bf9492 | 1425 | read_comp_unit_head and load_partial_die) can really know whether |
af703f96 JB |
1426 | the buffer is large enough to hold another complete object. |
1427 | ||
6502dd73 DJ |
1428 | At the moment, they don't actually check that. If .debug_info |
1429 | holds just one extra byte after the last compilation unit's dies, | |
1430 | then read_comp_unit_head will happily read off the end of the | |
1431 | buffer. read_partial_die is similarly casual. Those functions | |
1432 | should be fixed. | |
af703f96 JB |
1433 | |
1434 | For this loop condition, simply checking whether there's any data | |
1435 | left at all should be sufficient. */ | |
6502dd73 DJ |
1436 | while (info_ptr < (dwarf2_per_objfile->info_buffer |
1437 | + dwarf2_per_objfile->info_size)) | |
c906108c | 1438 | { |
f3dd6933 | 1439 | struct cleanup *back_to_inner; |
e7c27a73 | 1440 | struct dwarf2_cu cu; |
72bf9492 DJ |
1441 | struct abbrev_info *abbrev; |
1442 | unsigned int bytes_read; | |
1443 | struct dwarf2_per_cu_data *this_cu; | |
1444 | ||
c906108c | 1445 | beg_of_comp_unit = info_ptr; |
c906108c | 1446 | |
72bf9492 DJ |
1447 | memset (&cu, 0, sizeof (cu)); |
1448 | ||
1449 | obstack_init (&cu.comp_unit_obstack); | |
1450 | ||
1451 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); | |
1452 | ||
e7c27a73 | 1453 | cu.objfile = objfile; |
72bf9492 | 1454 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, abfd); |
e7c27a73 | 1455 | |
57349743 | 1456 | /* Complete the cu_header */ |
6502dd73 | 1457 | cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
e7c27a73 DJ |
1458 | cu.header.first_die_ptr = info_ptr; |
1459 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1460 | |
e142c38c DJ |
1461 | cu.list_in_scope = &file_symbols; |
1462 | ||
c906108c | 1463 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1464 | dwarf2_read_abbrevs (abfd, &cu); |
72bf9492 | 1465 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1466 | |
10b3939b | 1467 | this_cu = dwarf2_find_comp_unit (cu.header.offset, objfile); |
ae038cb0 | 1468 | |
c906108c | 1469 | /* Read the compilation unit die */ |
72bf9492 DJ |
1470 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, &cu); |
1471 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1472 | abfd, info_ptr, &cu); | |
c906108c | 1473 | |
31ffec48 DJ |
1474 | if (comp_unit_die.tag == DW_TAG_partial_unit) |
1475 | { | |
1476 | info_ptr = (beg_of_comp_unit + cu.header.length | |
1477 | + cu.header.initial_length_size); | |
1478 | do_cleanups (back_to_inner); | |
1479 | continue; | |
1480 | } | |
1481 | ||
c906108c | 1482 | /* Set the language we're debugging */ |
e142c38c | 1483 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1484 | |
1485 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1486 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1487 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1488 | comp_unit_die.lowpc, |
1489 | objfile->global_psymbols.next, | |
1490 | objfile->static_psymbols.next); | |
1491 | ||
ae038cb0 DJ |
1492 | if (comp_unit_die.dirname) |
1493 | pst->dirname = xstrdup (comp_unit_die.dirname); | |
57c22c6c | 1494 | |
10b3939b DJ |
1495 | pst->read_symtab_private = (char *) this_cu; |
1496 | ||
613e1657 | 1497 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1498 | |
1499 | /* Store the function that reads in the rest of the symbol table */ | |
1500 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1501 | ||
10b3939b DJ |
1502 | /* If this compilation unit was already read in, free the |
1503 | cached copy in order to read it in again. This is | |
1504 | necessary because we skipped some symbols when we first | |
1505 | read in the compilation unit (see load_partial_dies). | |
1506 | This problem could be avoided, but the benefit is | |
1507 | unclear. */ | |
1508 | if (this_cu->cu != NULL) | |
1509 | free_one_cached_comp_unit (this_cu->cu); | |
ae038cb0 | 1510 | |
10b3939b | 1511 | cu.per_cu = this_cu; |
ae038cb0 | 1512 | |
10b3939b DJ |
1513 | /* Note that this is a pointer to our stack frame, being |
1514 | added to a global data structure. It will be cleaned up | |
1515 | in free_stack_comp_unit when we finish with this | |
1516 | compilation unit. */ | |
1517 | this_cu->cu = &cu; | |
ae038cb0 | 1518 | |
10b3939b | 1519 | this_cu->psymtab = pst; |
ae038cb0 | 1520 | |
c906108c SS |
1521 | /* Check if comp unit has_children. |
1522 | If so, read the rest of the partial symbols from this comp unit. | |
1523 | If not, there's no more debug_info for this comp unit. */ | |
1524 | if (comp_unit_die.has_children) | |
1525 | { | |
72bf9492 DJ |
1526 | struct partial_die_info *first_die; |
1527 | ||
91c24f0a DC |
1528 | lowpc = ((CORE_ADDR) -1); |
1529 | highpc = ((CORE_ADDR) 0); | |
1530 | ||
72bf9492 DJ |
1531 | first_die = load_partial_dies (abfd, info_ptr, 1, &cu); |
1532 | ||
1533 | scan_partial_symbols (first_die, &lowpc, &highpc, &cu); | |
c906108c | 1534 | |
91c24f0a DC |
1535 | /* If we didn't find a lowpc, set it to highpc to avoid |
1536 | complaints from `maint check'. */ | |
1537 | if (lowpc == ((CORE_ADDR) -1)) | |
1538 | lowpc = highpc; | |
72bf9492 | 1539 | |
c906108c SS |
1540 | /* If the compilation unit didn't have an explicit address range, |
1541 | then use the information extracted from its child dies. */ | |
0b010bcc | 1542 | if (! comp_unit_die.has_pc_info) |
c906108c | 1543 | { |
c5aa993b | 1544 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1545 | comp_unit_die.highpc = highpc; |
1546 | } | |
1547 | } | |
c5aa993b | 1548 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1549 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1550 | ||
1551 | pst->n_global_syms = objfile->global_psymbols.next - | |
1552 | (objfile->global_psymbols.list + pst->globals_offset); | |
1553 | pst->n_static_syms = objfile->static_psymbols.next - | |
1554 | (objfile->static_psymbols.list + pst->statics_offset); | |
1555 | sort_pst_symbols (pst); | |
1556 | ||
1557 | /* If there is already a psymtab or symtab for a file of this | |
1558 | name, remove it. (If there is a symtab, more drastic things | |
1559 | also happen.) This happens in VxWorks. */ | |
1560 | free_named_symtabs (pst->filename); | |
1561 | ||
dd373385 EZ |
1562 | info_ptr = beg_of_comp_unit + cu.header.length |
1563 | + cu.header.initial_length_size; | |
1564 | ||
aaa75496 JB |
1565 | if (comp_unit_die.has_stmt_list) |
1566 | { | |
1567 | /* Get the list of files included in the current compilation unit, | |
1568 | and build a psymtab for each of them. */ | |
1569 | dwarf2_build_include_psymtabs (&cu, &comp_unit_die, pst); | |
1570 | } | |
1571 | ||
f3dd6933 | 1572 | do_cleanups (back_to_inner); |
c906108c | 1573 | } |
ae038cb0 DJ |
1574 | do_cleanups (back_to); |
1575 | } | |
1576 | ||
1577 | /* Load the DIEs for a secondary CU into memory. */ | |
1578 | ||
1579 | static void | |
1580 | load_comp_unit (struct dwarf2_per_cu_data *this_cu, struct objfile *objfile) | |
1581 | { | |
1582 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 1583 | gdb_byte *info_ptr, *beg_of_comp_unit; |
ae038cb0 DJ |
1584 | struct partial_die_info comp_unit_die; |
1585 | struct dwarf2_cu *cu; | |
1586 | struct abbrev_info *abbrev; | |
1587 | unsigned int bytes_read; | |
1588 | struct cleanup *back_to; | |
1589 | ||
1590 | info_ptr = dwarf2_per_objfile->info_buffer + this_cu->offset; | |
1591 | beg_of_comp_unit = info_ptr; | |
1592 | ||
1593 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
1594 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
1595 | ||
1596 | obstack_init (&cu->comp_unit_obstack); | |
1597 | ||
1598 | cu->objfile = objfile; | |
1599 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, abfd); | |
1600 | ||
1601 | /* Complete the cu_header. */ | |
1602 | cu->header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; | |
1603 | cu->header.first_die_ptr = info_ptr; | |
1604 | cu->header.cu_head_ptr = beg_of_comp_unit; | |
1605 | ||
1606 | /* Read the abbrevs for this compilation unit into a table. */ | |
1607 | dwarf2_read_abbrevs (abfd, cu); | |
1608 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
1609 | ||
1610 | /* Read the compilation unit die. */ | |
1611 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1612 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1613 | abfd, info_ptr, cu); | |
1614 | ||
1615 | /* Set the language we're debugging. */ | |
1616 | set_cu_language (comp_unit_die.language, cu); | |
1617 | ||
1618 | /* Link this compilation unit into the compilation unit tree. */ | |
1619 | this_cu->cu = cu; | |
1620 | cu->per_cu = this_cu; | |
1621 | ||
1622 | /* Check if comp unit has_children. | |
1623 | If so, read the rest of the partial symbols from this comp unit. | |
1624 | If not, there's no more debug_info for this comp unit. */ | |
1625 | if (comp_unit_die.has_children) | |
1626 | load_partial_dies (abfd, info_ptr, 0, cu); | |
1627 | ||
1628 | do_cleanups (back_to); | |
1629 | } | |
1630 | ||
1631 | /* Create a list of all compilation units in OBJFILE. We do this only | |
1632 | if an inter-comp-unit reference is found; presumably if there is one, | |
1633 | there will be many, and one will occur early in the .debug_info section. | |
1634 | So there's no point in building this list incrementally. */ | |
1635 | ||
1636 | static void | |
1637 | create_all_comp_units (struct objfile *objfile) | |
1638 | { | |
1639 | int n_allocated; | |
1640 | int n_comp_units; | |
1641 | struct dwarf2_per_cu_data **all_comp_units; | |
fe1b8b76 | 1642 | gdb_byte *info_ptr = dwarf2_per_objfile->info_buffer; |
ae038cb0 DJ |
1643 | |
1644 | n_comp_units = 0; | |
1645 | n_allocated = 10; | |
1646 | all_comp_units = xmalloc (n_allocated | |
1647 | * sizeof (struct dwarf2_per_cu_data *)); | |
1648 | ||
1649 | while (info_ptr < dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1650 | { | |
1651 | struct comp_unit_head cu_header; | |
fe1b8b76 | 1652 | gdb_byte *beg_of_comp_unit; |
ae038cb0 DJ |
1653 | struct dwarf2_per_cu_data *this_cu; |
1654 | unsigned long offset; | |
891d2f0b | 1655 | unsigned int bytes_read; |
ae038cb0 DJ |
1656 | |
1657 | offset = info_ptr - dwarf2_per_objfile->info_buffer; | |
1658 | ||
1659 | /* Read just enough information to find out where the next | |
1660 | compilation unit is. */ | |
dd373385 | 1661 | cu_header.initial_length_size = 0; |
ae038cb0 DJ |
1662 | cu_header.length = read_initial_length (objfile->obfd, info_ptr, |
1663 | &cu_header, &bytes_read); | |
1664 | ||
1665 | /* Save the compilation unit for later lookup. */ | |
1666 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
1667 | sizeof (struct dwarf2_per_cu_data)); | |
1668 | memset (this_cu, 0, sizeof (*this_cu)); | |
1669 | this_cu->offset = offset; | |
1670 | this_cu->length = cu_header.length + cu_header.initial_length_size; | |
1671 | ||
1672 | if (n_comp_units == n_allocated) | |
1673 | { | |
1674 | n_allocated *= 2; | |
1675 | all_comp_units = xrealloc (all_comp_units, | |
1676 | n_allocated | |
1677 | * sizeof (struct dwarf2_per_cu_data *)); | |
1678 | } | |
1679 | all_comp_units[n_comp_units++] = this_cu; | |
1680 | ||
1681 | info_ptr = info_ptr + this_cu->length; | |
1682 | } | |
1683 | ||
1684 | dwarf2_per_objfile->all_comp_units | |
1685 | = obstack_alloc (&objfile->objfile_obstack, | |
1686 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1687 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
1688 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1689 | xfree (all_comp_units); | |
1690 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
1691 | } |
1692 | ||
72bf9492 DJ |
1693 | /* Process all loaded DIEs for compilation unit CU, starting at FIRST_DIE. |
1694 | Also set *LOWPC and *HIGHPC to the lowest and highest PC values found | |
1695 | in CU. */ | |
c906108c | 1696 | |
72bf9492 DJ |
1697 | static void |
1698 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
1699 | CORE_ADDR *highpc, struct dwarf2_cu *cu) | |
c906108c | 1700 | { |
e7c27a73 | 1701 | struct objfile *objfile = cu->objfile; |
c906108c | 1702 | bfd *abfd = objfile->obfd; |
72bf9492 | 1703 | struct partial_die_info *pdi; |
c906108c | 1704 | |
91c24f0a DC |
1705 | /* Now, march along the PDI's, descending into ones which have |
1706 | interesting children but skipping the children of the other ones, | |
1707 | until we reach the end of the compilation unit. */ | |
c906108c | 1708 | |
72bf9492 | 1709 | pdi = first_die; |
91c24f0a | 1710 | |
72bf9492 DJ |
1711 | while (pdi != NULL) |
1712 | { | |
1713 | fixup_partial_die (pdi, cu); | |
c906108c | 1714 | |
91c24f0a DC |
1715 | /* Anonymous namespaces have no name but have interesting |
1716 | children, so we need to look at them. Ditto for anonymous | |
1717 | enums. */ | |
933c6fe4 | 1718 | |
72bf9492 DJ |
1719 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
1720 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 1721 | { |
72bf9492 | 1722 | switch (pdi->tag) |
c906108c SS |
1723 | { |
1724 | case DW_TAG_subprogram: | |
72bf9492 | 1725 | if (pdi->has_pc_info) |
c906108c | 1726 | { |
72bf9492 | 1727 | if (pdi->lowpc < *lowpc) |
c906108c | 1728 | { |
72bf9492 | 1729 | *lowpc = pdi->lowpc; |
c906108c | 1730 | } |
72bf9492 | 1731 | if (pdi->highpc > *highpc) |
c906108c | 1732 | { |
72bf9492 | 1733 | *highpc = pdi->highpc; |
c906108c | 1734 | } |
72bf9492 | 1735 | if (!pdi->is_declaration) |
c906108c | 1736 | { |
72bf9492 | 1737 | add_partial_symbol (pdi, cu); |
c906108c SS |
1738 | } |
1739 | } | |
1740 | break; | |
1741 | case DW_TAG_variable: | |
1742 | case DW_TAG_typedef: | |
91c24f0a | 1743 | case DW_TAG_union_type: |
72bf9492 | 1744 | if (!pdi->is_declaration) |
63d06c5c | 1745 | { |
72bf9492 | 1746 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
1747 | } |
1748 | break; | |
c906108c | 1749 | case DW_TAG_class_type: |
680b30c7 | 1750 | case DW_TAG_interface_type: |
c906108c | 1751 | case DW_TAG_structure_type: |
72bf9492 | 1752 | if (!pdi->is_declaration) |
c906108c | 1753 | { |
72bf9492 | 1754 | add_partial_symbol (pdi, cu); |
c906108c SS |
1755 | } |
1756 | break; | |
91c24f0a | 1757 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
1758 | if (!pdi->is_declaration) |
1759 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
1760 | break; |
1761 | case DW_TAG_base_type: | |
a02abb62 | 1762 | case DW_TAG_subrange_type: |
c906108c | 1763 | /* File scope base type definitions are added to the partial |
c5aa993b | 1764 | symbol table. */ |
72bf9492 | 1765 | add_partial_symbol (pdi, cu); |
c906108c | 1766 | break; |
d9fa45fe | 1767 | case DW_TAG_namespace: |
72bf9492 | 1768 | add_partial_namespace (pdi, lowpc, highpc, cu); |
91c24f0a | 1769 | break; |
c906108c SS |
1770 | default: |
1771 | break; | |
1772 | } | |
1773 | } | |
1774 | ||
72bf9492 DJ |
1775 | /* If the die has a sibling, skip to the sibling. */ |
1776 | ||
1777 | pdi = pdi->die_sibling; | |
1778 | } | |
1779 | } | |
1780 | ||
1781 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 1782 | |
72bf9492 | 1783 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
1784 | name is concatenated with "::" and the partial DIE's name. For |
1785 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
1786 | Enumerators are an exception; they use the scope of their parent |
1787 | enumeration type, i.e. the name of the enumeration type is not | |
1788 | prepended to the enumerator. | |
91c24f0a | 1789 | |
72bf9492 DJ |
1790 | There are two complexities. One is DW_AT_specification; in this |
1791 | case "parent" means the parent of the target of the specification, | |
1792 | instead of the direct parent of the DIE. The other is compilers | |
1793 | which do not emit DW_TAG_namespace; in this case we try to guess | |
1794 | the fully qualified name of structure types from their members' | |
1795 | linkage names. This must be done using the DIE's children rather | |
1796 | than the children of any DW_AT_specification target. We only need | |
1797 | to do this for structures at the top level, i.e. if the target of | |
1798 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
1799 | have a parent. */ | |
1800 | ||
1801 | /* Compute the scope prefix associated with PDI's parent, in | |
1802 | compilation unit CU. The result will be allocated on CU's | |
1803 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
1804 | field. NULL is returned if no prefix is necessary. */ | |
1805 | static char * | |
1806 | partial_die_parent_scope (struct partial_die_info *pdi, | |
1807 | struct dwarf2_cu *cu) | |
1808 | { | |
1809 | char *grandparent_scope; | |
1810 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 1811 | |
72bf9492 DJ |
1812 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
1813 | then this means the parent of the specification DIE. */ | |
1814 | ||
1815 | real_pdi = pdi; | |
72bf9492 | 1816 | while (real_pdi->has_specification) |
10b3939b | 1817 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
1818 | |
1819 | parent = real_pdi->die_parent; | |
1820 | if (parent == NULL) | |
1821 | return NULL; | |
1822 | ||
1823 | if (parent->scope_set) | |
1824 | return parent->scope; | |
1825 | ||
1826 | fixup_partial_die (parent, cu); | |
1827 | ||
10b3939b | 1828 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 DJ |
1829 | |
1830 | if (parent->tag == DW_TAG_namespace | |
1831 | || parent->tag == DW_TAG_structure_type | |
1832 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 1833 | || parent->tag == DW_TAG_interface_type |
72bf9492 DJ |
1834 | || parent->tag == DW_TAG_union_type) |
1835 | { | |
1836 | if (grandparent_scope == NULL) | |
1837 | parent->scope = parent->name; | |
1838 | else | |
987504bb JJ |
1839 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
1840 | parent->name, cu); | |
72bf9492 DJ |
1841 | } |
1842 | else if (parent->tag == DW_TAG_enumeration_type) | |
1843 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
1844 | parent->scope = grandparent_scope; | |
1845 | else | |
1846 | { | |
1847 | /* FIXME drow/2004-04-01: What should we be doing with | |
1848 | function-local names? For partial symbols, we should probably be | |
1849 | ignoring them. */ | |
1850 | complaint (&symfile_complaints, | |
e2e0b3e5 | 1851 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
1852 | parent->tag, pdi->offset); |
1853 | parent->scope = grandparent_scope; | |
c906108c SS |
1854 | } |
1855 | ||
72bf9492 DJ |
1856 | parent->scope_set = 1; |
1857 | return parent->scope; | |
1858 | } | |
1859 | ||
1860 | /* Return the fully scoped name associated with PDI, from compilation unit | |
1861 | CU. The result will be allocated with malloc. */ | |
1862 | static char * | |
1863 | partial_die_full_name (struct partial_die_info *pdi, | |
1864 | struct dwarf2_cu *cu) | |
1865 | { | |
1866 | char *parent_scope; | |
1867 | ||
1868 | parent_scope = partial_die_parent_scope (pdi, cu); | |
1869 | if (parent_scope == NULL) | |
1870 | return NULL; | |
1871 | else | |
987504bb | 1872 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
1873 | } |
1874 | ||
1875 | static void | |
72bf9492 | 1876 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 1877 | { |
e7c27a73 | 1878 | struct objfile *objfile = cu->objfile; |
c906108c | 1879 | CORE_ADDR addr = 0; |
decbce07 | 1880 | char *actual_name = NULL; |
72bf9492 | 1881 | const char *my_prefix; |
5c4e30ca | 1882 | const struct partial_symbol *psym = NULL; |
e142c38c | 1883 | CORE_ADDR baseaddr; |
72bf9492 | 1884 | int built_actual_name = 0; |
e142c38c DJ |
1885 | |
1886 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1887 | |
72bf9492 | 1888 | if (pdi_needs_namespace (pdi->tag)) |
63d06c5c | 1889 | { |
72bf9492 DJ |
1890 | actual_name = partial_die_full_name (pdi, cu); |
1891 | if (actual_name) | |
1892 | built_actual_name = 1; | |
63d06c5c DC |
1893 | } |
1894 | ||
72bf9492 DJ |
1895 | if (actual_name == NULL) |
1896 | actual_name = pdi->name; | |
1897 | ||
c906108c SS |
1898 | switch (pdi->tag) |
1899 | { | |
1900 | case DW_TAG_subprogram: | |
1901 | if (pdi->is_external) | |
1902 | { | |
38d518c9 | 1903 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1904 | mst_text, objfile); */ |
38d518c9 | 1905 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1906 | VAR_DOMAIN, LOC_BLOCK, |
1907 | &objfile->global_psymbols, | |
1908 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1909 | cu->language, objfile); |
c906108c SS |
1910 | } |
1911 | else | |
1912 | { | |
38d518c9 | 1913 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1914 | mst_file_text, objfile); */ |
38d518c9 | 1915 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1916 | VAR_DOMAIN, LOC_BLOCK, |
1917 | &objfile->static_psymbols, | |
1918 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1919 | cu->language, objfile); |
c906108c SS |
1920 | } |
1921 | break; | |
1922 | case DW_TAG_variable: | |
1923 | if (pdi->is_external) | |
1924 | { | |
1925 | /* Global Variable. | |
1926 | Don't enter into the minimal symbol tables as there is | |
1927 | a minimal symbol table entry from the ELF symbols already. | |
1928 | Enter into partial symbol table if it has a location | |
1929 | descriptor or a type. | |
1930 | If the location descriptor is missing, new_symbol will create | |
1931 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1932 | be determined from the minimal symbol table whenever the variable | |
1933 | is referenced. | |
1934 | The address for the partial symbol table entry is not | |
1935 | used by GDB, but it comes in handy for debugging partial symbol | |
1936 | table building. */ | |
1937 | ||
1938 | if (pdi->locdesc) | |
e7c27a73 | 1939 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1940 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1941 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1942 | VAR_DOMAIN, LOC_STATIC, |
1943 | &objfile->global_psymbols, | |
1944 | 0, addr + baseaddr, | |
e142c38c | 1945 | cu->language, objfile); |
c906108c SS |
1946 | } |
1947 | else | |
1948 | { | |
1949 | /* Static Variable. Skip symbols without location descriptors. */ | |
1950 | if (pdi->locdesc == NULL) | |
decbce07 MS |
1951 | { |
1952 | if (built_actual_name) | |
1953 | xfree (actual_name); | |
1954 | return; | |
1955 | } | |
e7c27a73 | 1956 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 1957 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 1958 | mst_file_data, objfile); */ |
38d518c9 | 1959 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1960 | VAR_DOMAIN, LOC_STATIC, |
1961 | &objfile->static_psymbols, | |
1962 | 0, addr + baseaddr, | |
e142c38c | 1963 | cu->language, objfile); |
c906108c SS |
1964 | } |
1965 | break; | |
1966 | case DW_TAG_typedef: | |
1967 | case DW_TAG_base_type: | |
a02abb62 | 1968 | case DW_TAG_subrange_type: |
38d518c9 | 1969 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1970 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 1971 | &objfile->static_psymbols, |
e142c38c | 1972 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1973 | break; |
72bf9492 DJ |
1974 | case DW_TAG_namespace: |
1975 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
1976 | VAR_DOMAIN, LOC_TYPEDEF, | |
1977 | &objfile->global_psymbols, | |
1978 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
1979 | break; | |
c906108c | 1980 | case DW_TAG_class_type: |
680b30c7 | 1981 | case DW_TAG_interface_type: |
c906108c SS |
1982 | case DW_TAG_structure_type: |
1983 | case DW_TAG_union_type: | |
1984 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
1985 | /* Skip external references. The DWARF standard says in the section |
1986 | about "Structure, Union, and Class Type Entries": "An incomplete | |
1987 | structure, union or class type is represented by a structure, | |
1988 | union or class entry that does not have a byte size attribute | |
1989 | and that has a DW_AT_declaration attribute." */ | |
1990 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
1991 | { |
1992 | if (built_actual_name) | |
1993 | xfree (actual_name); | |
1994 | return; | |
1995 | } | |
fa4028e9 | 1996 | |
63d06c5c DC |
1997 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
1998 | static vs. global. */ | |
38d518c9 | 1999 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2000 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
2001 | (cu->language == language_cplus |
2002 | || cu->language == language_java) | |
63d06c5c DC |
2003 | ? &objfile->global_psymbols |
2004 | : &objfile->static_psymbols, | |
e142c38c | 2005 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2006 | |
987504bb | 2007 | if (cu->language == language_cplus |
8c6860bb JB |
2008 | || cu->language == language_java |
2009 | || cu->language == language_ada) | |
c906108c | 2010 | { |
987504bb | 2011 | /* For C++ and Java, these implicitly act as typedefs as well. */ |
38d518c9 | 2012 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2013 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 2014 | &objfile->global_psymbols, |
e142c38c | 2015 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2016 | } |
2017 | break; | |
2018 | case DW_TAG_enumerator: | |
38d518c9 | 2019 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2020 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
2021 | (cu->language == language_cplus |
2022 | || cu->language == language_java) | |
f6fe98ef DJ |
2023 | ? &objfile->global_psymbols |
2024 | : &objfile->static_psymbols, | |
e142c38c | 2025 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2026 | break; |
2027 | default: | |
2028 | break; | |
2029 | } | |
5c4e30ca DC |
2030 | |
2031 | /* Check to see if we should scan the name for possible namespace | |
2032 | info. Only do this if this is C++, if we don't have namespace | |
2033 | debugging info in the file, if the psym is of an appropriate type | |
2034 | (otherwise we'll have psym == NULL), and if we actually had a | |
2035 | mangled name to begin with. */ | |
2036 | ||
72bf9492 DJ |
2037 | /* FIXME drow/2004-02-22: Why don't we do this for classes, i.e. the |
2038 | cases which do not set PSYM above? */ | |
2039 | ||
e142c38c | 2040 | if (cu->language == language_cplus |
72bf9492 | 2041 | && cu->has_namespace_info == 0 |
5c4e30ca DC |
2042 | && psym != NULL |
2043 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
2044 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
2045 | objfile); | |
72bf9492 DJ |
2046 | |
2047 | if (built_actual_name) | |
2048 | xfree (actual_name); | |
c906108c SS |
2049 | } |
2050 | ||
72bf9492 DJ |
2051 | /* Determine whether a die of type TAG living in a C++ class or |
2052 | namespace needs to have the name of the scope prepended to the | |
63d06c5c DC |
2053 | name listed in the die. */ |
2054 | ||
2055 | static int | |
72bf9492 | 2056 | pdi_needs_namespace (enum dwarf_tag tag) |
63d06c5c | 2057 | { |
63d06c5c DC |
2058 | switch (tag) |
2059 | { | |
72bf9492 | 2060 | case DW_TAG_namespace: |
63d06c5c DC |
2061 | case DW_TAG_typedef: |
2062 | case DW_TAG_class_type: | |
680b30c7 | 2063 | case DW_TAG_interface_type: |
63d06c5c DC |
2064 | case DW_TAG_structure_type: |
2065 | case DW_TAG_union_type: | |
2066 | case DW_TAG_enumeration_type: | |
2067 | case DW_TAG_enumerator: | |
2068 | return 1; | |
2069 | default: | |
2070 | return 0; | |
2071 | } | |
2072 | } | |
2073 | ||
5c4e30ca DC |
2074 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2075 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2076 | the name of the enclosing namespace. */ | |
91c24f0a | 2077 | |
72bf9492 DJ |
2078 | static void |
2079 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2080 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
72bf9492 | 2081 | struct dwarf2_cu *cu) |
91c24f0a | 2082 | { |
e7c27a73 | 2083 | struct objfile *objfile = cu->objfile; |
5c4e30ca | 2084 | |
72bf9492 | 2085 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2086 | |
72bf9492 | 2087 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2088 | |
2089 | /* Now scan partial symbols in that namespace. */ | |
2090 | ||
91c24f0a | 2091 | if (pdi->has_children) |
72bf9492 | 2092 | scan_partial_symbols (pdi->die_child, lowpc, highpc, cu); |
91c24f0a DC |
2093 | } |
2094 | ||
72bf9492 DJ |
2095 | /* See if we can figure out if the class lives in a namespace. We do |
2096 | this by looking for a member function; its demangled name will | |
2097 | contain namespace info, if there is any. */ | |
63d06c5c | 2098 | |
72bf9492 DJ |
2099 | static void |
2100 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2101 | struct dwarf2_cu *cu) | |
63d06c5c | 2102 | { |
987504bb JJ |
2103 | if ((cu->language == language_cplus |
2104 | || cu->language == language_java) | |
72bf9492 | 2105 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2106 | && struct_pdi->has_children) |
2107 | { | |
63d06c5c DC |
2108 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2109 | what template types look like, because the demangler | |
2110 | frequently doesn't give the same name as the debug info. We | |
2111 | could fix this by only using the demangled name to get the | |
134d01f1 | 2112 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2113 | |
72bf9492 DJ |
2114 | struct partial_die_info *child_pdi = struct_pdi->die_child; |
2115 | struct partial_die_info *real_pdi; | |
5d51ca54 | 2116 | |
72bf9492 DJ |
2117 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2118 | we should not do this. We'll prepend the parent's fully qualified | |
2119 | name when we create the partial symbol. */ | |
5d51ca54 | 2120 | |
72bf9492 | 2121 | real_pdi = struct_pdi; |
72bf9492 | 2122 | while (real_pdi->has_specification) |
10b3939b | 2123 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2124 | |
72bf9492 DJ |
2125 | if (real_pdi->die_parent != NULL) |
2126 | return; | |
63d06c5c | 2127 | |
72bf9492 DJ |
2128 | while (child_pdi != NULL) |
2129 | { | |
2130 | if (child_pdi->tag == DW_TAG_subprogram) | |
63d06c5c | 2131 | { |
72bf9492 | 2132 | char *actual_class_name |
31c27f77 JJ |
2133 | = language_class_name_from_physname (cu->language_defn, |
2134 | child_pdi->name); | |
63d06c5c | 2135 | if (actual_class_name != NULL) |
72bf9492 DJ |
2136 | { |
2137 | struct_pdi->name | |
2138 | = obsavestring (actual_class_name, | |
2139 | strlen (actual_class_name), | |
2140 | &cu->comp_unit_obstack); | |
2141 | xfree (actual_class_name); | |
2142 | } | |
63d06c5c DC |
2143 | break; |
2144 | } | |
72bf9492 DJ |
2145 | |
2146 | child_pdi = child_pdi->die_sibling; | |
63d06c5c DC |
2147 | } |
2148 | } | |
63d06c5c DC |
2149 | } |
2150 | ||
91c24f0a DC |
2151 | /* Read a partial die corresponding to an enumeration type. */ |
2152 | ||
72bf9492 DJ |
2153 | static void |
2154 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2155 | struct dwarf2_cu *cu) | |
91c24f0a | 2156 | { |
e7c27a73 | 2157 | struct objfile *objfile = cu->objfile; |
91c24f0a | 2158 | bfd *abfd = objfile->obfd; |
72bf9492 | 2159 | struct partial_die_info *pdi; |
91c24f0a DC |
2160 | |
2161 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2162 | add_partial_symbol (enum_pdi, cu); |
2163 | ||
2164 | pdi = enum_pdi->die_child; | |
2165 | while (pdi) | |
91c24f0a | 2166 | { |
72bf9492 | 2167 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 2168 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 2169 | else |
72bf9492 DJ |
2170 | add_partial_symbol (pdi, cu); |
2171 | pdi = pdi->die_sibling; | |
91c24f0a | 2172 | } |
91c24f0a DC |
2173 | } |
2174 | ||
4bb7a0a7 DJ |
2175 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2176 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2177 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2178 | the initial number. */ | |
2179 | ||
2180 | static struct abbrev_info * | |
fe1b8b76 | 2181 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 2182 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2183 | { |
2184 | bfd *abfd = cu->objfile->obfd; | |
2185 | unsigned int abbrev_number; | |
2186 | struct abbrev_info *abbrev; | |
2187 | ||
2188 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2189 | ||
2190 | if (abbrev_number == 0) | |
2191 | return NULL; | |
2192 | ||
2193 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2194 | if (!abbrev) | |
2195 | { | |
8a3fe4f8 | 2196 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
2197 | bfd_get_filename (abfd)); |
2198 | } | |
2199 | ||
2200 | return abbrev; | |
2201 | } | |
2202 | ||
2203 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
2204 | pointer to the end of a series of DIEs, terminated by an empty | |
2205 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
2206 | ||
fe1b8b76 JB |
2207 | static gdb_byte * |
2208 | skip_children (gdb_byte *info_ptr, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
2209 | { |
2210 | struct abbrev_info *abbrev; | |
2211 | unsigned int bytes_read; | |
2212 | ||
2213 | while (1) | |
2214 | { | |
2215 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2216 | if (abbrev == NULL) | |
2217 | return info_ptr + bytes_read; | |
2218 | else | |
2219 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
2220 | } | |
2221 | } | |
2222 | ||
2223 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
2224 | should point just after the initial uleb128 of a DIE, and the | |
2225 | abbrev corresponding to that skipped uleb128 should be passed in | |
2226 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2227 | children. */ | |
2228 | ||
fe1b8b76 JB |
2229 | static gdb_byte * |
2230 | skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, | |
4bb7a0a7 DJ |
2231 | struct dwarf2_cu *cu) |
2232 | { | |
2233 | unsigned int bytes_read; | |
2234 | struct attribute attr; | |
2235 | bfd *abfd = cu->objfile->obfd; | |
2236 | unsigned int form, i; | |
2237 | ||
2238 | for (i = 0; i < abbrev->num_attrs; i++) | |
2239 | { | |
2240 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2241 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2242 | { | |
2243 | read_attribute (&attr, &abbrev->attrs[i], | |
2244 | abfd, info_ptr, cu); | |
2245 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 2246 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 2247 | else |
6502dd73 DJ |
2248 | return dwarf2_per_objfile->info_buffer |
2249 | + dwarf2_get_ref_die_offset (&attr, cu); | |
4bb7a0a7 DJ |
2250 | } |
2251 | ||
2252 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2253 | form = abbrev->attrs[i].form; | |
2254 | skip_attribute: | |
2255 | switch (form) | |
2256 | { | |
2257 | case DW_FORM_addr: | |
2258 | case DW_FORM_ref_addr: | |
2259 | info_ptr += cu->header.addr_size; | |
2260 | break; | |
2261 | case DW_FORM_data1: | |
2262 | case DW_FORM_ref1: | |
2263 | case DW_FORM_flag: | |
2264 | info_ptr += 1; | |
2265 | break; | |
2266 | case DW_FORM_data2: | |
2267 | case DW_FORM_ref2: | |
2268 | info_ptr += 2; | |
2269 | break; | |
2270 | case DW_FORM_data4: | |
2271 | case DW_FORM_ref4: | |
2272 | info_ptr += 4; | |
2273 | break; | |
2274 | case DW_FORM_data8: | |
2275 | case DW_FORM_ref8: | |
2276 | info_ptr += 8; | |
2277 | break; | |
2278 | case DW_FORM_string: | |
2279 | read_string (abfd, info_ptr, &bytes_read); | |
2280 | info_ptr += bytes_read; | |
2281 | break; | |
2282 | case DW_FORM_strp: | |
2283 | info_ptr += cu->header.offset_size; | |
2284 | break; | |
2285 | case DW_FORM_block: | |
2286 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2287 | info_ptr += bytes_read; | |
2288 | break; | |
2289 | case DW_FORM_block1: | |
2290 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2291 | break; | |
2292 | case DW_FORM_block2: | |
2293 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2294 | break; | |
2295 | case DW_FORM_block4: | |
2296 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2297 | break; | |
2298 | case DW_FORM_sdata: | |
2299 | case DW_FORM_udata: | |
2300 | case DW_FORM_ref_udata: | |
2301 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2302 | break; | |
2303 | case DW_FORM_indirect: | |
2304 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2305 | info_ptr += bytes_read; | |
2306 | /* We need to continue parsing from here, so just go back to | |
2307 | the top. */ | |
2308 | goto skip_attribute; | |
2309 | ||
2310 | default: | |
8a3fe4f8 | 2311 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
2312 | dwarf_form_name (form), |
2313 | bfd_get_filename (abfd)); | |
2314 | } | |
2315 | } | |
2316 | ||
2317 | if (abbrev->has_children) | |
2318 | return skip_children (info_ptr, cu); | |
2319 | else | |
2320 | return info_ptr; | |
2321 | } | |
2322 | ||
2323 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
2324 | the next DIE after ORIG_PDI. */ | |
91c24f0a | 2325 | |
fe1b8b76 JB |
2326 | static gdb_byte * |
2327 | locate_pdi_sibling (struct partial_die_info *orig_pdi, gdb_byte *info_ptr, | |
e7c27a73 | 2328 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2329 | { |
2330 | /* Do we know the sibling already? */ | |
72bf9492 | 2331 | |
91c24f0a DC |
2332 | if (orig_pdi->sibling) |
2333 | return orig_pdi->sibling; | |
2334 | ||
2335 | /* Are there any children to deal with? */ | |
2336 | ||
2337 | if (!orig_pdi->has_children) | |
2338 | return info_ptr; | |
2339 | ||
4bb7a0a7 | 2340 | /* Skip the children the long way. */ |
91c24f0a | 2341 | |
4bb7a0a7 | 2342 | return skip_children (info_ptr, cu); |
91c24f0a DC |
2343 | } |
2344 | ||
c906108c SS |
2345 | /* Expand this partial symbol table into a full symbol table. */ |
2346 | ||
2347 | static void | |
fba45db2 | 2348 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2349 | { |
2350 | /* FIXME: This is barely more than a stub. */ | |
2351 | if (pst != NULL) | |
2352 | { | |
2353 | if (pst->readin) | |
2354 | { | |
8a3fe4f8 | 2355 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
2356 | } |
2357 | else | |
2358 | { | |
2359 | if (info_verbose) | |
2360 | { | |
a3f17187 | 2361 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
2362 | gdb_flush (gdb_stdout); |
2363 | } | |
2364 | ||
10b3939b DJ |
2365 | /* Restore our global data. */ |
2366 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2367 | dwarf2_objfile_data_key); | |
2368 | ||
c906108c SS |
2369 | psymtab_to_symtab_1 (pst); |
2370 | ||
2371 | /* Finish up the debug error message. */ | |
2372 | if (info_verbose) | |
a3f17187 | 2373 | printf_filtered (_("done.\n")); |
c906108c SS |
2374 | } |
2375 | } | |
2376 | } | |
2377 | ||
10b3939b DJ |
2378 | /* Add PER_CU to the queue. */ |
2379 | ||
2380 | static void | |
2381 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2382 | { | |
2383 | struct dwarf2_queue_item *item; | |
2384 | ||
2385 | per_cu->queued = 1; | |
2386 | item = xmalloc (sizeof (*item)); | |
2387 | item->per_cu = per_cu; | |
2388 | item->next = NULL; | |
2389 | ||
2390 | if (dwarf2_queue == NULL) | |
2391 | dwarf2_queue = item; | |
2392 | else | |
2393 | dwarf2_queue_tail->next = item; | |
2394 | ||
2395 | dwarf2_queue_tail = item; | |
2396 | } | |
2397 | ||
2398 | /* Process the queue. */ | |
2399 | ||
2400 | static void | |
2401 | process_queue (struct objfile *objfile) | |
2402 | { | |
2403 | struct dwarf2_queue_item *item, *next_item; | |
2404 | ||
2405 | /* Initially, there is just one item on the queue. Load its DIEs, | |
2406 | and the DIEs of any other compilation units it requires, | |
2407 | transitively. */ | |
2408 | ||
2409 | for (item = dwarf2_queue; item != NULL; item = item->next) | |
2410 | { | |
2411 | /* Read in this compilation unit. This may add new items to | |
2412 | the end of the queue. */ | |
31ffec48 | 2413 | load_full_comp_unit (item->per_cu, objfile); |
10b3939b DJ |
2414 | |
2415 | item->per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
2416 | dwarf2_per_objfile->read_in_chain = item->per_cu; | |
2417 | ||
2418 | /* If this compilation unit has already had full symbols created, | |
2419 | reset the TYPE fields in each DIE. */ | |
31ffec48 | 2420 | if (item->per_cu->type_hash) |
10b3939b DJ |
2421 | reset_die_and_siblings_types (item->per_cu->cu->dies, |
2422 | item->per_cu->cu); | |
2423 | } | |
2424 | ||
2425 | /* Now everything left on the queue needs to be read in. Process | |
2426 | them, one at a time, removing from the queue as we finish. */ | |
2427 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) | |
2428 | { | |
31ffec48 | 2429 | if (item->per_cu->psymtab && !item->per_cu->psymtab->readin) |
10b3939b DJ |
2430 | process_full_comp_unit (item->per_cu); |
2431 | ||
2432 | item->per_cu->queued = 0; | |
2433 | next_item = item->next; | |
2434 | xfree (item); | |
2435 | } | |
2436 | ||
2437 | dwarf2_queue_tail = NULL; | |
2438 | } | |
2439 | ||
2440 | /* Free all allocated queue entries. This function only releases anything if | |
2441 | an error was thrown; if the queue was processed then it would have been | |
2442 | freed as we went along. */ | |
2443 | ||
2444 | static void | |
2445 | dwarf2_release_queue (void *dummy) | |
2446 | { | |
2447 | struct dwarf2_queue_item *item, *last; | |
2448 | ||
2449 | item = dwarf2_queue; | |
2450 | while (item) | |
2451 | { | |
2452 | /* Anything still marked queued is likely to be in an | |
2453 | inconsistent state, so discard it. */ | |
2454 | if (item->per_cu->queued) | |
2455 | { | |
2456 | if (item->per_cu->cu != NULL) | |
2457 | free_one_cached_comp_unit (item->per_cu->cu); | |
2458 | item->per_cu->queued = 0; | |
2459 | } | |
2460 | ||
2461 | last = item; | |
2462 | item = item->next; | |
2463 | xfree (last); | |
2464 | } | |
2465 | ||
2466 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2467 | } | |
2468 | ||
2469 | /* Read in full symbols for PST, and anything it depends on. */ | |
2470 | ||
c906108c | 2471 | static void |
fba45db2 | 2472 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 2473 | { |
10b3939b | 2474 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 2475 | struct cleanup *back_to; |
aaa75496 JB |
2476 | int i; |
2477 | ||
2478 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2479 | if (!pst->dependencies[i]->readin) | |
2480 | { | |
2481 | /* Inform about additional files that need to be read in. */ | |
2482 | if (info_verbose) | |
2483 | { | |
a3f17187 | 2484 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
2485 | fputs_filtered (" ", gdb_stdout); |
2486 | wrap_here (""); | |
2487 | fputs_filtered ("and ", gdb_stdout); | |
2488 | wrap_here (""); | |
2489 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
2490 | wrap_here (""); /* Flush output */ | |
2491 | gdb_flush (gdb_stdout); | |
2492 | } | |
2493 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
2494 | } | |
2495 | ||
10b3939b DJ |
2496 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
2497 | ||
2498 | if (per_cu == NULL) | |
aaa75496 JB |
2499 | { |
2500 | /* It's an include file, no symbols to read for it. | |
2501 | Everything is in the parent symtab. */ | |
2502 | pst->readin = 1; | |
2503 | return; | |
2504 | } | |
c906108c | 2505 | |
10b3939b DJ |
2506 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2507 | ||
2508 | queue_comp_unit (per_cu); | |
2509 | ||
2510 | process_queue (pst->objfile); | |
2511 | ||
2512 | /* Age the cache, releasing compilation units that have not | |
2513 | been used recently. */ | |
2514 | age_cached_comp_units (); | |
2515 | ||
2516 | do_cleanups (back_to); | |
2517 | } | |
2518 | ||
2519 | /* Load the DIEs associated with PST and PER_CU into memory. */ | |
2520 | ||
2521 | static struct dwarf2_cu * | |
31ffec48 | 2522 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 2523 | { |
31ffec48 | 2524 | bfd *abfd = objfile->obfd; |
10b3939b DJ |
2525 | struct dwarf2_cu *cu; |
2526 | unsigned long offset; | |
fe1b8b76 | 2527 | gdb_byte *info_ptr; |
10b3939b DJ |
2528 | struct cleanup *back_to, *free_cu_cleanup; |
2529 | struct attribute *attr; | |
2530 | CORE_ADDR baseaddr; | |
6502dd73 | 2531 | |
c906108c | 2532 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 2533 | offset = per_cu->offset; |
6502dd73 DJ |
2534 | |
2535 | info_ptr = dwarf2_per_objfile->info_buffer + offset; | |
63d06c5c | 2536 | |
10b3939b DJ |
2537 | cu = xmalloc (sizeof (struct dwarf2_cu)); |
2538 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
c906108c | 2539 | |
10b3939b DJ |
2540 | /* If an error occurs while loading, release our storage. */ |
2541 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 2542 | |
31ffec48 | 2543 | cu->objfile = objfile; |
e7c27a73 | 2544 | |
c906108c | 2545 | /* read in the comp_unit header */ |
10b3939b | 2546 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c SS |
2547 | |
2548 | /* Read the abbrevs for this compilation unit */ | |
10b3939b DJ |
2549 | dwarf2_read_abbrevs (abfd, cu); |
2550 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2551 | ||
2552 | cu->header.offset = offset; | |
c906108c | 2553 | |
10b3939b DJ |
2554 | cu->per_cu = per_cu; |
2555 | per_cu->cu = cu; | |
e142c38c | 2556 | |
10b3939b DJ |
2557 | /* We use this obstack for block values in dwarf_alloc_block. */ |
2558 | obstack_init (&cu->comp_unit_obstack); | |
2559 | ||
2560 | cu->dies = read_comp_unit (info_ptr, abfd, cu); | |
2561 | ||
2562 | /* We try not to read any attributes in this function, because not | |
2563 | all objfiles needed for references have been loaded yet, and symbol | |
2564 | table processing isn't initialized. But we have to set the CU language, | |
2565 | or we won't be able to build types correctly. */ | |
2566 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
2567 | if (attr) | |
2568 | set_cu_language (DW_UNSND (attr), cu); | |
2569 | else | |
2570 | set_cu_language (language_minimal, cu); | |
2571 | ||
2572 | do_cleanups (back_to); | |
e142c38c | 2573 | |
10b3939b DJ |
2574 | /* We've successfully allocated this compilation unit. Let our caller |
2575 | clean it up when finished with it. */ | |
2576 | discard_cleanups (free_cu_cleanup); | |
c906108c | 2577 | |
10b3939b DJ |
2578 | return cu; |
2579 | } | |
2580 | ||
2581 | /* Generate full symbol information for PST and CU, whose DIEs have | |
2582 | already been loaded into memory. */ | |
2583 | ||
2584 | static void | |
2585 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2586 | { | |
2587 | struct partial_symtab *pst = per_cu->psymtab; | |
2588 | struct dwarf2_cu *cu = per_cu->cu; | |
2589 | struct objfile *objfile = pst->objfile; | |
2590 | bfd *abfd = objfile->obfd; | |
2591 | CORE_ADDR lowpc, highpc; | |
2592 | struct symtab *symtab; | |
2593 | struct cleanup *back_to; | |
2594 | struct attribute *attr; | |
2595 | CORE_ADDR baseaddr; | |
2596 | ||
2597 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2598 | ||
2599 | /* We're in the global namespace. */ | |
2600 | processing_current_prefix = ""; | |
2601 | ||
2602 | buildsym_init (); | |
2603 | back_to = make_cleanup (really_free_pendings, NULL); | |
2604 | ||
2605 | cu->list_in_scope = &file_symbols; | |
c906108c | 2606 | |
0d53c4c4 DJ |
2607 | /* Find the base address of the compilation unit for range lists and |
2608 | location lists. It will normally be specified by DW_AT_low_pc. | |
2609 | In DWARF-3 draft 4, the base address could be overridden by | |
2610 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2611 | compilation units with discontinuous ranges. */ | |
2612 | ||
10b3939b DJ |
2613 | cu->header.base_known = 0; |
2614 | cu->header.base_address = 0; | |
0d53c4c4 | 2615 | |
10b3939b | 2616 | attr = dwarf2_attr (cu->dies, DW_AT_entry_pc, cu); |
0d53c4c4 DJ |
2617 | if (attr) |
2618 | { | |
10b3939b DJ |
2619 | cu->header.base_address = DW_ADDR (attr); |
2620 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2621 | } |
2622 | else | |
2623 | { | |
10b3939b | 2624 | attr = dwarf2_attr (cu->dies, DW_AT_low_pc, cu); |
0d53c4c4 DJ |
2625 | if (attr) |
2626 | { | |
10b3939b DJ |
2627 | cu->header.base_address = DW_ADDR (attr); |
2628 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2629 | } |
2630 | } | |
2631 | ||
c906108c | 2632 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 2633 | process_die (cu->dies, cu); |
c906108c | 2634 | |
fae299cd DC |
2635 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
2636 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
2637 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 2638 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 2639 | |
613e1657 | 2640 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2641 | |
2642 | /* Set symtab language to language from DW_AT_language. | |
2643 | If the compilation is from a C file generated by language preprocessors, | |
2644 | do not set the language if it was already deduced by start_subfile. */ | |
2645 | if (symtab != NULL | |
10b3939b | 2646 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 2647 | { |
10b3939b | 2648 | symtab->language = cu->language; |
c906108c SS |
2649 | } |
2650 | pst->symtab = symtab; | |
2651 | pst->readin = 1; | |
c906108c SS |
2652 | |
2653 | do_cleanups (back_to); | |
2654 | } | |
2655 | ||
2656 | /* Process a die and its children. */ | |
2657 | ||
2658 | static void | |
e7c27a73 | 2659 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2660 | { |
2661 | switch (die->tag) | |
2662 | { | |
2663 | case DW_TAG_padding: | |
2664 | break; | |
2665 | case DW_TAG_compile_unit: | |
e7c27a73 | 2666 | read_file_scope (die, cu); |
c906108c SS |
2667 | break; |
2668 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
2669 | read_subroutine_type (die, cu); |
2670 | read_func_scope (die, cu); | |
c906108c SS |
2671 | break; |
2672 | case DW_TAG_inlined_subroutine: | |
2673 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2674 | They could be used to set breakpoints on all inlined instances |
2675 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2676 | break; |
2677 | case DW_TAG_lexical_block: | |
14898363 L |
2678 | case DW_TAG_try_block: |
2679 | case DW_TAG_catch_block: | |
e7c27a73 | 2680 | read_lexical_block_scope (die, cu); |
c906108c SS |
2681 | break; |
2682 | case DW_TAG_class_type: | |
680b30c7 | 2683 | case DW_TAG_interface_type: |
c906108c SS |
2684 | case DW_TAG_structure_type: |
2685 | case DW_TAG_union_type: | |
134d01f1 DJ |
2686 | read_structure_type (die, cu); |
2687 | process_structure_scope (die, cu); | |
c906108c SS |
2688 | break; |
2689 | case DW_TAG_enumeration_type: | |
134d01f1 DJ |
2690 | read_enumeration_type (die, cu); |
2691 | process_enumeration_scope (die, cu); | |
c906108c | 2692 | break; |
134d01f1 DJ |
2693 | |
2694 | /* FIXME drow/2004-03-14: These initialize die->type, but do not create | |
2695 | a symbol or process any children. Therefore it doesn't do anything | |
2696 | that won't be done on-demand by read_type_die. */ | |
c906108c | 2697 | case DW_TAG_subroutine_type: |
e7c27a73 | 2698 | read_subroutine_type (die, cu); |
c906108c | 2699 | break; |
72019c9c GM |
2700 | case DW_TAG_set_type: |
2701 | read_set_type (die, cu); | |
2702 | break; | |
c906108c | 2703 | case DW_TAG_array_type: |
e7c27a73 | 2704 | read_array_type (die, cu); |
c906108c SS |
2705 | break; |
2706 | case DW_TAG_pointer_type: | |
e7c27a73 | 2707 | read_tag_pointer_type (die, cu); |
c906108c SS |
2708 | break; |
2709 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 2710 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
2711 | break; |
2712 | case DW_TAG_reference_type: | |
e7c27a73 | 2713 | read_tag_reference_type (die, cu); |
c906108c SS |
2714 | break; |
2715 | case DW_TAG_string_type: | |
e7c27a73 | 2716 | read_tag_string_type (die, cu); |
c906108c | 2717 | break; |
134d01f1 DJ |
2718 | /* END FIXME */ |
2719 | ||
c906108c | 2720 | case DW_TAG_base_type: |
e7c27a73 | 2721 | read_base_type (die, cu); |
134d01f1 DJ |
2722 | /* Add a typedef symbol for the type definition, if it has a |
2723 | DW_AT_name. */ | |
2724 | new_symbol (die, die->type, cu); | |
c906108c | 2725 | break; |
a02abb62 JB |
2726 | case DW_TAG_subrange_type: |
2727 | read_subrange_type (die, cu); | |
134d01f1 DJ |
2728 | /* Add a typedef symbol for the type definition, if it has a |
2729 | DW_AT_name. */ | |
2730 | new_symbol (die, die->type, cu); | |
a02abb62 | 2731 | break; |
c906108c | 2732 | case DW_TAG_common_block: |
e7c27a73 | 2733 | read_common_block (die, cu); |
c906108c SS |
2734 | break; |
2735 | case DW_TAG_common_inclusion: | |
2736 | break; | |
d9fa45fe | 2737 | case DW_TAG_namespace: |
63d06c5c | 2738 | processing_has_namespace_info = 1; |
e7c27a73 | 2739 | read_namespace (die, cu); |
d9fa45fe DC |
2740 | break; |
2741 | case DW_TAG_imported_declaration: | |
2742 | case DW_TAG_imported_module: | |
2743 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2744 | information contained in these. DW_TAG_imported_declaration | |
2745 | dies shouldn't have children; DW_TAG_imported_module dies | |
2746 | shouldn't in the C++ case, but conceivably could in the | |
2747 | Fortran case, so we'll have to replace this gdb_assert if | |
2748 | Fortran compilers start generating that info. */ | |
63d06c5c | 2749 | processing_has_namespace_info = 1; |
639d11d3 | 2750 | gdb_assert (die->child == NULL); |
d9fa45fe | 2751 | break; |
c906108c | 2752 | default: |
e7c27a73 | 2753 | new_symbol (die, NULL, cu); |
c906108c SS |
2754 | break; |
2755 | } | |
2756 | } | |
2757 | ||
5fb290d7 | 2758 | static void |
e142c38c | 2759 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2760 | { |
e142c38c | 2761 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2762 | } |
2763 | ||
cb1df416 DJ |
2764 | static void |
2765 | free_cu_line_header (void *arg) | |
2766 | { | |
2767 | struct dwarf2_cu *cu = arg; | |
2768 | ||
2769 | free_line_header (cu->line_header); | |
2770 | cu->line_header = NULL; | |
2771 | } | |
2772 | ||
c906108c | 2773 | static void |
e7c27a73 | 2774 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2775 | { |
e7c27a73 DJ |
2776 | struct objfile *objfile = cu->objfile; |
2777 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2778 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2779 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2780 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2781 | struct attribute *attr; | |
e1024ff1 | 2782 | char *name = NULL; |
c906108c SS |
2783 | char *comp_dir = NULL; |
2784 | struct die_info *child_die; | |
2785 | bfd *abfd = objfile->obfd; | |
debd256d | 2786 | struct line_header *line_header = 0; |
e142c38c DJ |
2787 | CORE_ADDR baseaddr; |
2788 | ||
2789 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2790 | |
fae299cd | 2791 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2792 | |
2793 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2794 | from finish_block. */ | |
2acceee2 | 2795 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2796 | lowpc = highpc; |
2797 | lowpc += baseaddr; | |
2798 | highpc += baseaddr; | |
2799 | ||
39cbfefa DJ |
2800 | /* Find the filename. Do not use dwarf2_name here, since the filename |
2801 | is not a source language identifier. */ | |
e142c38c | 2802 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2803 | if (attr) |
2804 | { | |
2805 | name = DW_STRING (attr); | |
2806 | } | |
e1024ff1 | 2807 | |
e142c38c | 2808 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c | 2809 | if (attr) |
e1024ff1 DJ |
2810 | comp_dir = DW_STRING (attr); |
2811 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
c906108c | 2812 | { |
e1024ff1 DJ |
2813 | comp_dir = ldirname (name); |
2814 | if (comp_dir != NULL) | |
2815 | make_cleanup (xfree, comp_dir); | |
2816 | } | |
2817 | if (comp_dir != NULL) | |
2818 | { | |
2819 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2820 | directory, get rid of it. */ | |
2821 | char *cp = strchr (comp_dir, ':'); | |
c906108c | 2822 | |
e1024ff1 DJ |
2823 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') |
2824 | comp_dir = cp + 1; | |
c906108c SS |
2825 | } |
2826 | ||
e1024ff1 DJ |
2827 | if (name == NULL) |
2828 | name = "<unknown>"; | |
2829 | ||
e142c38c | 2830 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2831 | if (attr) |
2832 | { | |
e142c38c | 2833 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2834 | } |
2835 | ||
b0f35d58 DL |
2836 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
2837 | if (attr) | |
2838 | cu->producer = DW_STRING (attr); | |
303b6f5d | 2839 | |
c906108c SS |
2840 | /* We assume that we're processing GCC output. */ |
2841 | processing_gcc_compilation = 2; | |
c906108c | 2842 | |
c906108c SS |
2843 | start_symtab (name, comp_dir, lowpc); |
2844 | record_debugformat ("DWARF 2"); | |
303b6f5d | 2845 | record_producer (cu->producer); |
c906108c | 2846 | |
e142c38c | 2847 | initialize_cu_func_list (cu); |
c906108c | 2848 | |
cb1df416 DJ |
2849 | /* Decode line number information if present. We do this before |
2850 | processing child DIEs, so that the line header table is available | |
2851 | for DW_AT_decl_file. */ | |
e142c38c | 2852 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2853 | if (attr) |
2854 | { | |
debd256d | 2855 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2856 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2857 | if (line_header) |
2858 | { | |
cb1df416 DJ |
2859 | cu->line_header = line_header; |
2860 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 2861 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 2862 | } |
5fb290d7 | 2863 | } |
debd256d | 2864 | |
cb1df416 DJ |
2865 | /* Process all dies in compilation unit. */ |
2866 | if (die->child != NULL) | |
2867 | { | |
2868 | child_die = die->child; | |
2869 | while (child_die && child_die->tag) | |
2870 | { | |
2871 | process_die (child_die, cu); | |
2872 | child_die = sibling_die (child_die); | |
2873 | } | |
2874 | } | |
2875 | ||
2e276125 JB |
2876 | /* Decode macro information, if present. Dwarf 2 macro information |
2877 | refers to information in the line number info statement program | |
2878 | header, so we can only read it if we've read the header | |
2879 | successfully. */ | |
e142c38c | 2880 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2881 | if (attr && line_header) |
2e276125 JB |
2882 | { |
2883 | unsigned int macro_offset = DW_UNSND (attr); | |
2884 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2885 | comp_dir, abfd, cu); |
2e276125 | 2886 | } |
debd256d | 2887 | do_cleanups (back_to); |
5fb290d7 DJ |
2888 | } |
2889 | ||
2890 | static void | |
e142c38c DJ |
2891 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2892 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2893 | { |
2894 | struct function_range *thisfn; | |
2895 | ||
2896 | thisfn = (struct function_range *) | |
7b5a2f43 | 2897 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
2898 | thisfn->name = name; |
2899 | thisfn->lowpc = lowpc; | |
2900 | thisfn->highpc = highpc; | |
2901 | thisfn->seen_line = 0; | |
2902 | thisfn->next = NULL; | |
2903 | ||
e142c38c DJ |
2904 | if (cu->last_fn == NULL) |
2905 | cu->first_fn = thisfn; | |
5fb290d7 | 2906 | else |
e142c38c | 2907 | cu->last_fn->next = thisfn; |
5fb290d7 | 2908 | |
e142c38c | 2909 | cu->last_fn = thisfn; |
c906108c SS |
2910 | } |
2911 | ||
2912 | static void | |
e7c27a73 | 2913 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2914 | { |
e7c27a73 | 2915 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2916 | struct context_stack *new; |
c906108c SS |
2917 | CORE_ADDR lowpc; |
2918 | CORE_ADDR highpc; | |
2919 | struct die_info *child_die; | |
2920 | struct attribute *attr; | |
2921 | char *name; | |
fdde2d81 DC |
2922 | const char *previous_prefix = processing_current_prefix; |
2923 | struct cleanup *back_to = NULL; | |
e142c38c | 2924 | CORE_ADDR baseaddr; |
801e3a5b | 2925 | struct block *block; |
c906108c | 2926 | |
e142c38c DJ |
2927 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2928 | ||
2929 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2930 | |
2931 | /* Ignore functions with missing or empty names and functions with | |
2932 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2933 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2934 | return; |
2935 | ||
987504bb JJ |
2936 | if (cu->language == language_cplus |
2937 | || cu->language == language_java) | |
fdde2d81 | 2938 | { |
086ed43d | 2939 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2940 | |
2a35147e JB |
2941 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2942 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2943 | given the code | |
2944 | ||
2945 | namespace N { | |
2946 | void foo() { | |
2947 | // Definition of N::foo. | |
2948 | } | |
2949 | } | |
2950 | ||
2951 | then we'll have a tree of DIEs like this: | |
2952 | ||
2953 | 1: DW_TAG_compile_unit | |
2954 | 2: DW_TAG_namespace // N | |
2955 | 3: DW_TAG_subprogram // declaration of N::foo | |
2956 | 4: DW_TAG_subprogram // definition of N::foo | |
2957 | DW_AT_specification // refers to die #3 | |
2958 | ||
2959 | Thus, when processing die #4, we have to pretend that we're | |
2960 | in the context of its DW_AT_specification, namely the contex | |
2961 | of die #3. */ | |
fdde2d81 DC |
2962 | |
2963 | if (spec_die != NULL) | |
2964 | { | |
e142c38c | 2965 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
2966 | processing_current_prefix = specification_prefix; |
2967 | back_to = make_cleanup (xfree, specification_prefix); | |
2968 | } | |
2969 | } | |
2970 | ||
c906108c SS |
2971 | lowpc += baseaddr; |
2972 | highpc += baseaddr; | |
2973 | ||
5fb290d7 | 2974 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 2975 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 2976 | |
c906108c | 2977 | new = push_context (0, lowpc); |
e7c27a73 | 2978 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 2979 | |
4cecd739 DJ |
2980 | /* If there is a location expression for DW_AT_frame_base, record |
2981 | it. */ | |
e142c38c | 2982 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 2983 | if (attr) |
c034e007 AC |
2984 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
2985 | expression is being recorded directly in the function's symbol | |
2986 | and not in a separate frame-base object. I guess this hack is | |
2987 | to avoid adding some sort of frame-base adjunct/annex to the | |
2988 | function's symbol :-(. The problem with doing this is that it | |
2989 | results in a function symbol with a location expression that | |
2990 | has nothing to do with the location of the function, ouch! The | |
2991 | relationship should be: a function's symbol has-a frame base; a | |
2992 | frame-base has-a location expression. */ | |
e7c27a73 | 2993 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 2994 | |
e142c38c | 2995 | cu->list_in_scope = &local_symbols; |
c906108c | 2996 | |
639d11d3 | 2997 | if (die->child != NULL) |
c906108c | 2998 | { |
639d11d3 | 2999 | child_die = die->child; |
c906108c SS |
3000 | while (child_die && child_die->tag) |
3001 | { | |
e7c27a73 | 3002 | process_die (child_die, cu); |
c906108c SS |
3003 | child_die = sibling_die (child_die); |
3004 | } | |
3005 | } | |
3006 | ||
3007 | new = pop_context (); | |
3008 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
3009 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
3010 | lowpc, highpc, objfile); | |
3011 | ||
3012 | /* If we have address ranges, record them. */ | |
3013 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
208d8187 JB |
3014 | |
3015 | /* In C++, we can have functions nested inside functions (e.g., when | |
3016 | a function declares a class that has methods). This means that | |
3017 | when we finish processing a function scope, we may need to go | |
3018 | back to building a containing block's symbol lists. */ | |
3019 | local_symbols = new->locals; | |
3020 | param_symbols = new->params; | |
3021 | ||
921e78cf JB |
3022 | /* If we've finished processing a top-level function, subsequent |
3023 | symbols go in the file symbol list. */ | |
3024 | if (outermost_context_p ()) | |
e142c38c | 3025 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
3026 | |
3027 | processing_current_prefix = previous_prefix; | |
3028 | if (back_to != NULL) | |
3029 | do_cleanups (back_to); | |
c906108c SS |
3030 | } |
3031 | ||
3032 | /* Process all the DIES contained within a lexical block scope. Start | |
3033 | a new scope, process the dies, and then close the scope. */ | |
3034 | ||
3035 | static void | |
e7c27a73 | 3036 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3037 | { |
e7c27a73 | 3038 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 3039 | struct context_stack *new; |
c906108c SS |
3040 | CORE_ADDR lowpc, highpc; |
3041 | struct die_info *child_die; | |
e142c38c DJ |
3042 | CORE_ADDR baseaddr; |
3043 | ||
3044 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3045 | |
3046 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
3047 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
3048 | as multiple lexical blocks? Handling children in a sane way would | |
3049 | be nasty. Might be easier to properly extend generic blocks to | |
3050 | describe ranges. */ | |
e7c27a73 | 3051 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
3052 | return; |
3053 | lowpc += baseaddr; | |
3054 | highpc += baseaddr; | |
3055 | ||
3056 | push_context (0, lowpc); | |
639d11d3 | 3057 | if (die->child != NULL) |
c906108c | 3058 | { |
639d11d3 | 3059 | child_die = die->child; |
c906108c SS |
3060 | while (child_die && child_die->tag) |
3061 | { | |
e7c27a73 | 3062 | process_die (child_die, cu); |
c906108c SS |
3063 | child_die = sibling_die (child_die); |
3064 | } | |
3065 | } | |
3066 | new = pop_context (); | |
3067 | ||
3068 | if (local_symbols != NULL) | |
3069 | { | |
801e3a5b JB |
3070 | struct block *block |
3071 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
3072 | highpc, objfile); | |
3073 | ||
3074 | /* Note that recording ranges after traversing children, as we | |
3075 | do here, means that recording a parent's ranges entails | |
3076 | walking across all its children's ranges as they appear in | |
3077 | the address map, which is quadratic behavior. | |
3078 | ||
3079 | It would be nicer to record the parent's ranges before | |
3080 | traversing its children, simply overriding whatever you find | |
3081 | there. But since we don't even decide whether to create a | |
3082 | block until after we've traversed its children, that's hard | |
3083 | to do. */ | |
3084 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
3085 | } |
3086 | local_symbols = new->locals; | |
3087 | } | |
3088 | ||
43039443 JK |
3089 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
3090 | Return 1 if the attributes are present and valid, otherwise, return 0. */ | |
3091 | ||
3092 | static int | |
3093 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
3094 | CORE_ADDR *high_return, struct dwarf2_cu *cu) | |
3095 | { | |
3096 | struct objfile *objfile = cu->objfile; | |
3097 | struct comp_unit_head *cu_header = &cu->header; | |
3098 | bfd *obfd = objfile->obfd; | |
3099 | unsigned int addr_size = cu_header->addr_size; | |
3100 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3101 | /* Base address selection entry. */ | |
3102 | CORE_ADDR base; | |
3103 | int found_base; | |
3104 | unsigned int dummy; | |
3105 | gdb_byte *buffer; | |
3106 | CORE_ADDR marker; | |
3107 | int low_set; | |
3108 | CORE_ADDR low = 0; | |
3109 | CORE_ADDR high = 0; | |
3110 | ||
3111 | found_base = cu_header->base_known; | |
3112 | base = cu_header->base_address; | |
3113 | ||
3114 | if (offset >= dwarf2_per_objfile->ranges_size) | |
3115 | { | |
3116 | complaint (&symfile_complaints, | |
3117 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
3118 | offset); | |
3119 | return 0; | |
3120 | } | |
3121 | buffer = dwarf2_per_objfile->ranges_buffer + offset; | |
3122 | ||
3123 | /* Read in the largest possible address. */ | |
3124 | marker = read_address (obfd, buffer, cu, &dummy); | |
3125 | if ((marker & mask) == mask) | |
3126 | { | |
3127 | /* If we found the largest possible address, then | |
3128 | read the base address. */ | |
3129 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
3130 | buffer += 2 * addr_size; | |
3131 | offset += 2 * addr_size; | |
3132 | found_base = 1; | |
3133 | } | |
3134 | ||
3135 | low_set = 0; | |
3136 | ||
3137 | while (1) | |
3138 | { | |
3139 | CORE_ADDR range_beginning, range_end; | |
3140 | ||
3141 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
3142 | buffer += addr_size; | |
3143 | range_end = read_address (obfd, buffer, cu, &dummy); | |
3144 | buffer += addr_size; | |
3145 | offset += 2 * addr_size; | |
3146 | ||
3147 | /* An end of list marker is a pair of zero addresses. */ | |
3148 | if (range_beginning == 0 && range_end == 0) | |
3149 | /* Found the end of list entry. */ | |
3150 | break; | |
3151 | ||
3152 | /* Each base address selection entry is a pair of 2 values. | |
3153 | The first is the largest possible address, the second is | |
3154 | the base address. Check for a base address here. */ | |
3155 | if ((range_beginning & mask) == mask) | |
3156 | { | |
3157 | /* If we found the largest possible address, then | |
3158 | read the base address. */ | |
3159 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
3160 | found_base = 1; | |
3161 | continue; | |
3162 | } | |
3163 | ||
3164 | if (!found_base) | |
3165 | { | |
3166 | /* We have no valid base address for the ranges | |
3167 | data. */ | |
3168 | complaint (&symfile_complaints, | |
3169 | _("Invalid .debug_ranges data (no base address)")); | |
3170 | return 0; | |
3171 | } | |
3172 | ||
3173 | range_beginning += base; | |
3174 | range_end += base; | |
3175 | ||
3176 | /* FIXME: This is recording everything as a low-high | |
3177 | segment of consecutive addresses. We should have a | |
3178 | data structure for discontiguous block ranges | |
3179 | instead. */ | |
3180 | if (! low_set) | |
3181 | { | |
3182 | low = range_beginning; | |
3183 | high = range_end; | |
3184 | low_set = 1; | |
3185 | } | |
3186 | else | |
3187 | { | |
3188 | if (range_beginning < low) | |
3189 | low = range_beginning; | |
3190 | if (range_end > high) | |
3191 | high = range_end; | |
3192 | } | |
3193 | } | |
3194 | ||
3195 | if (! low_set) | |
3196 | /* If the first entry is an end-of-list marker, the range | |
3197 | describes an empty scope, i.e. no instructions. */ | |
3198 | return 0; | |
3199 | ||
3200 | if (low_return) | |
3201 | *low_return = low; | |
3202 | if (high_return) | |
3203 | *high_return = high; | |
3204 | return 1; | |
3205 | } | |
3206 | ||
af34e669 DJ |
3207 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
3208 | are present and valid, otherwise, return 0. Return -1 if the range is | |
3209 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 3210 | static int |
af34e669 | 3211 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 3212 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c SS |
3213 | { |
3214 | struct attribute *attr; | |
af34e669 DJ |
3215 | CORE_ADDR low = 0; |
3216 | CORE_ADDR high = 0; | |
3217 | int ret = 0; | |
c906108c | 3218 | |
e142c38c | 3219 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 3220 | if (attr) |
af34e669 DJ |
3221 | { |
3222 | high = DW_ADDR (attr); | |
e142c38c | 3223 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
3224 | if (attr) |
3225 | low = DW_ADDR (attr); | |
3226 | else | |
3227 | /* Found high w/o low attribute. */ | |
3228 | return 0; | |
3229 | ||
3230 | /* Found consecutive range of addresses. */ | |
3231 | ret = 1; | |
3232 | } | |
c906108c | 3233 | else |
af34e669 | 3234 | { |
e142c38c | 3235 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
3236 | if (attr != NULL) |
3237 | { | |
af34e669 | 3238 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 3239 | .debug_ranges section. */ |
43039443 | 3240 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu)) |
af34e669 | 3241 | return 0; |
43039443 | 3242 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
3243 | ret = -1; |
3244 | } | |
3245 | } | |
c906108c SS |
3246 | |
3247 | if (high < low) | |
3248 | return 0; | |
3249 | ||
3250 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
3251 | eliminate duplicate copies of functions and vtables and such. | |
3252 | The linker will arbitrarily choose one and discard the others. | |
3253 | The AT_*_pc values for such functions refer to local labels in | |
3254 | these sections. If the section from that file was discarded, the | |
3255 | labels are not in the output, so the relocs get a value of 0. | |
3256 | If this is a discarded function, mark the pc bounds as invalid, | |
3257 | so that GDB will ignore it. */ | |
72dca2f5 | 3258 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
3259 | return 0; |
3260 | ||
3261 | *lowpc = low; | |
3262 | *highpc = high; | |
af34e669 | 3263 | return ret; |
c906108c SS |
3264 | } |
3265 | ||
fae299cd DC |
3266 | /* Get the low and high pc's represented by the scope DIE, and store |
3267 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
3268 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
3269 | ||
3270 | static void | |
3271 | get_scope_pc_bounds (struct die_info *die, | |
3272 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3273 | struct dwarf2_cu *cu) | |
3274 | { | |
3275 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
3276 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
3277 | CORE_ADDR current_low, current_high; | |
3278 | ||
3279 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
3280 | { | |
3281 | best_low = current_low; | |
3282 | best_high = current_high; | |
3283 | } | |
3284 | else | |
3285 | { | |
3286 | struct die_info *child = die->child; | |
3287 | ||
3288 | while (child && child->tag) | |
3289 | { | |
3290 | switch (child->tag) { | |
3291 | case DW_TAG_subprogram: | |
3292 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
3293 | { | |
3294 | best_low = min (best_low, current_low); | |
3295 | best_high = max (best_high, current_high); | |
3296 | } | |
3297 | break; | |
3298 | case DW_TAG_namespace: | |
3299 | /* FIXME: carlton/2004-01-16: Should we do this for | |
3300 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
3301 | that current GCC's always emit the DIEs corresponding | |
3302 | to definitions of methods of classes as children of a | |
3303 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
3304 | the DIEs giving the declarations, which could be | |
3305 | anywhere). But I don't see any reason why the | |
3306 | standards says that they have to be there. */ | |
3307 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
3308 | ||
3309 | if (current_low != ((CORE_ADDR) -1)) | |
3310 | { | |
3311 | best_low = min (best_low, current_low); | |
3312 | best_high = max (best_high, current_high); | |
3313 | } | |
3314 | break; | |
3315 | default: | |
3316 | /* Ignore. */ | |
3317 | break; | |
3318 | } | |
3319 | ||
3320 | child = sibling_die (child); | |
3321 | } | |
3322 | } | |
3323 | ||
3324 | *lowpc = best_low; | |
3325 | *highpc = best_high; | |
3326 | } | |
3327 | ||
801e3a5b JB |
3328 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
3329 | in DIE. */ | |
3330 | static void | |
3331 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
3332 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
3333 | { | |
3334 | struct attribute *attr; | |
3335 | ||
3336 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
3337 | if (attr) | |
3338 | { | |
3339 | CORE_ADDR high = DW_ADDR (attr); | |
3340 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3341 | if (attr) | |
3342 | { | |
3343 | CORE_ADDR low = DW_ADDR (attr); | |
3344 | record_block_range (block, baseaddr + low, baseaddr + high - 1); | |
3345 | } | |
3346 | } | |
3347 | ||
3348 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
3349 | if (attr) | |
3350 | { | |
3351 | bfd *obfd = cu->objfile->obfd; | |
3352 | ||
3353 | /* The value of the DW_AT_ranges attribute is the offset of the | |
3354 | address range list in the .debug_ranges section. */ | |
3355 | unsigned long offset = DW_UNSND (attr); | |
3356 | gdb_byte *buffer = dwarf2_per_objfile->ranges_buffer + offset; | |
3357 | ||
3358 | /* For some target architectures, but not others, the | |
3359 | read_address function sign-extends the addresses it returns. | |
3360 | To recognize base address selection entries, we need a | |
3361 | mask. */ | |
3362 | unsigned int addr_size = cu->header.addr_size; | |
3363 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3364 | ||
3365 | /* The base address, to which the next pair is relative. Note | |
3366 | that this 'base' is a DWARF concept: most entries in a range | |
3367 | list are relative, to reduce the number of relocs against the | |
3368 | debugging information. This is separate from this function's | |
3369 | 'baseaddr' argument, which GDB uses to relocate debugging | |
3370 | information from a shared library based on the address at | |
3371 | which the library was loaded. */ | |
3372 | CORE_ADDR base = cu->header.base_address; | |
3373 | int base_known = cu->header.base_known; | |
3374 | ||
3375 | if (offset >= dwarf2_per_objfile->ranges_size) | |
3376 | { | |
3377 | complaint (&symfile_complaints, | |
3378 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
3379 | offset); | |
3380 | return; | |
3381 | } | |
3382 | ||
3383 | for (;;) | |
3384 | { | |
3385 | unsigned int bytes_read; | |
3386 | CORE_ADDR start, end; | |
3387 | ||
3388 | start = read_address (obfd, buffer, cu, &bytes_read); | |
3389 | buffer += bytes_read; | |
3390 | end = read_address (obfd, buffer, cu, &bytes_read); | |
3391 | buffer += bytes_read; | |
3392 | ||
3393 | /* Did we find the end of the range list? */ | |
3394 | if (start == 0 && end == 0) | |
3395 | break; | |
3396 | ||
3397 | /* Did we find a base address selection entry? */ | |
3398 | else if ((start & base_select_mask) == base_select_mask) | |
3399 | { | |
3400 | base = end; | |
3401 | base_known = 1; | |
3402 | } | |
3403 | ||
3404 | /* We found an ordinary address range. */ | |
3405 | else | |
3406 | { | |
3407 | if (!base_known) | |
3408 | { | |
3409 | complaint (&symfile_complaints, | |
3410 | _("Invalid .debug_ranges data (no base address)")); | |
3411 | return; | |
3412 | } | |
3413 | ||
3414 | record_block_range (block, | |
3415 | baseaddr + base + start, | |
3416 | baseaddr + base + end - 1); | |
3417 | } | |
3418 | } | |
3419 | } | |
3420 | } | |
3421 | ||
c906108c SS |
3422 | /* Add an aggregate field to the field list. */ |
3423 | ||
3424 | static void | |
107d2387 | 3425 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
3426 | struct dwarf2_cu *cu) |
3427 | { | |
3428 | struct objfile *objfile = cu->objfile; | |
c906108c SS |
3429 | struct nextfield *new_field; |
3430 | struct attribute *attr; | |
3431 | struct field *fp; | |
3432 | char *fieldname = ""; | |
3433 | ||
3434 | /* Allocate a new field list entry and link it in. */ | |
3435 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3436 | make_cleanup (xfree, new_field); |
c906108c SS |
3437 | memset (new_field, 0, sizeof (struct nextfield)); |
3438 | new_field->next = fip->fields; | |
3439 | fip->fields = new_field; | |
3440 | fip->nfields++; | |
3441 | ||
3442 | /* Handle accessibility and virtuality of field. | |
3443 | The default accessibility for members is public, the default | |
3444 | accessibility for inheritance is private. */ | |
3445 | if (die->tag != DW_TAG_inheritance) | |
3446 | new_field->accessibility = DW_ACCESS_public; | |
3447 | else | |
3448 | new_field->accessibility = DW_ACCESS_private; | |
3449 | new_field->virtuality = DW_VIRTUALITY_none; | |
3450 | ||
e142c38c | 3451 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3452 | if (attr) |
3453 | new_field->accessibility = DW_UNSND (attr); | |
3454 | if (new_field->accessibility != DW_ACCESS_public) | |
3455 | fip->non_public_fields = 1; | |
e142c38c | 3456 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
3457 | if (attr) |
3458 | new_field->virtuality = DW_UNSND (attr); | |
3459 | ||
3460 | fp = &new_field->field; | |
a9a9bd0f | 3461 | |
e142c38c | 3462 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 3463 | { |
a9a9bd0f DC |
3464 | /* Data member other than a C++ static data member. */ |
3465 | ||
c906108c | 3466 | /* Get type of field. */ |
e7c27a73 | 3467 | fp->type = die_type (die, cu); |
c906108c | 3468 | |
01ad7f36 DJ |
3469 | FIELD_STATIC_KIND (*fp) = 0; |
3470 | ||
c906108c | 3471 | /* Get bit size of field (zero if none). */ |
e142c38c | 3472 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
3473 | if (attr) |
3474 | { | |
3475 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
3476 | } | |
3477 | else | |
3478 | { | |
3479 | FIELD_BITSIZE (*fp) = 0; | |
3480 | } | |
3481 | ||
3482 | /* Get bit offset of field. */ | |
e142c38c | 3483 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
3484 | if (attr) |
3485 | { | |
c6a0999f JB |
3486 | int byte_offset; |
3487 | ||
3690dd37 JB |
3488 | if (attr_form_is_section_offset (attr)) |
3489 | { | |
3490 | dwarf2_complex_location_expr_complaint (); | |
c6a0999f | 3491 | byte_offset = 0; |
3690dd37 JB |
3492 | } |
3493 | else if (attr_form_is_constant (attr)) | |
c6a0999f | 3494 | byte_offset = dwarf2_get_attr_constant_value (attr, 0); |
3690dd37 | 3495 | else |
c6a0999f JB |
3496 | byte_offset = decode_locdesc (DW_BLOCK (attr), cu); |
3497 | ||
3498 | FIELD_BITPOS (*fp) = byte_offset * bits_per_byte; | |
c906108c SS |
3499 | } |
3500 | else | |
3501 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 3502 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
3503 | if (attr) |
3504 | { | |
3505 | if (BITS_BIG_ENDIAN) | |
3506 | { | |
3507 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
3508 | additional bit offset from the MSB of the containing |
3509 | anonymous object to the MSB of the field. We don't | |
3510 | have to do anything special since we don't need to | |
3511 | know the size of the anonymous object. */ | |
c906108c SS |
3512 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
3513 | } | |
3514 | else | |
3515 | { | |
3516 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
3517 | MSB of the anonymous object, subtract off the number of |
3518 | bits from the MSB of the field to the MSB of the | |
3519 | object, and then subtract off the number of bits of | |
3520 | the field itself. The result is the bit offset of | |
3521 | the LSB of the field. */ | |
c906108c SS |
3522 | int anonymous_size; |
3523 | int bit_offset = DW_UNSND (attr); | |
3524 | ||
e142c38c | 3525 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3526 | if (attr) |
3527 | { | |
3528 | /* The size of the anonymous object containing | |
3529 | the bit field is explicit, so use the | |
3530 | indicated size (in bytes). */ | |
3531 | anonymous_size = DW_UNSND (attr); | |
3532 | } | |
3533 | else | |
3534 | { | |
3535 | /* The size of the anonymous object containing | |
3536 | the bit field must be inferred from the type | |
3537 | attribute of the data member containing the | |
3538 | bit field. */ | |
3539 | anonymous_size = TYPE_LENGTH (fp->type); | |
3540 | } | |
3541 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
3542 | - bit_offset - FIELD_BITSIZE (*fp); | |
3543 | } | |
3544 | } | |
3545 | ||
3546 | /* Get name of field. */ | |
39cbfefa DJ |
3547 | fieldname = dwarf2_name (die, cu); |
3548 | if (fieldname == NULL) | |
3549 | fieldname = ""; | |
d8151005 DJ |
3550 | |
3551 | /* The name is already allocated along with this objfile, so we don't | |
3552 | need to duplicate it for the type. */ | |
3553 | fp->name = fieldname; | |
c906108c SS |
3554 | |
3555 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 3556 | pointer or virtual base class pointer) to private. */ |
e142c38c | 3557 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
3558 | { |
3559 | new_field->accessibility = DW_ACCESS_private; | |
3560 | fip->non_public_fields = 1; | |
3561 | } | |
3562 | } | |
a9a9bd0f | 3563 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 3564 | { |
a9a9bd0f DC |
3565 | /* C++ static member. */ |
3566 | ||
3567 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
3568 | is a declaration, but all versions of G++ as of this writing | |
3569 | (so through at least 3.2.1) incorrectly generate | |
3570 | DW_TAG_variable tags. */ | |
3571 | ||
c906108c | 3572 | char *physname; |
c906108c | 3573 | |
a9a9bd0f | 3574 | /* Get name of field. */ |
39cbfefa DJ |
3575 | fieldname = dwarf2_name (die, cu); |
3576 | if (fieldname == NULL) | |
c906108c SS |
3577 | return; |
3578 | ||
2df3850c | 3579 | /* Get physical name. */ |
e142c38c | 3580 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 3581 | |
d8151005 DJ |
3582 | /* The name is already allocated along with this objfile, so we don't |
3583 | need to duplicate it for the type. */ | |
3584 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 3585 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 3586 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
3587 | } |
3588 | else if (die->tag == DW_TAG_inheritance) | |
3589 | { | |
3590 | /* C++ base class field. */ | |
e142c38c | 3591 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 3592 | if (attr) |
e7c27a73 | 3593 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 3594 | * bits_per_byte); |
c906108c | 3595 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 3596 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 3597 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
3598 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
3599 | fip->nbaseclasses++; | |
3600 | } | |
3601 | } | |
3602 | ||
3603 | /* Create the vector of fields, and attach it to the type. */ | |
3604 | ||
3605 | static void | |
fba45db2 | 3606 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3607 | struct dwarf2_cu *cu) |
c906108c SS |
3608 | { |
3609 | int nfields = fip->nfields; | |
3610 | ||
3611 | /* Record the field count, allocate space for the array of fields, | |
3612 | and create blank accessibility bitfields if necessary. */ | |
3613 | TYPE_NFIELDS (type) = nfields; | |
3614 | TYPE_FIELDS (type) = (struct field *) | |
3615 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3616 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3617 | ||
3618 | if (fip->non_public_fields) | |
3619 | { | |
3620 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3621 | ||
3622 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3623 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3624 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3625 | ||
3626 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3627 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3628 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3629 | ||
3630 | TYPE_FIELD_IGNORE_BITS (type) = | |
3631 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3632 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3633 | } | |
3634 | ||
3635 | /* If the type has baseclasses, allocate and clear a bit vector for | |
3636 | TYPE_FIELD_VIRTUAL_BITS. */ | |
3637 | if (fip->nbaseclasses) | |
3638 | { | |
3639 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 3640 | unsigned char *pointer; |
c906108c SS |
3641 | |
3642 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
3643 | pointer = TYPE_ALLOC (type, num_bytes); |
3644 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
3645 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
3646 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
3647 | } | |
3648 | ||
3649 | /* Copy the saved-up fields into the field vector. Start from the head | |
3650 | of the list, adding to the tail of the field array, so that they end | |
3651 | up in the same order in the array in which they were added to the list. */ | |
3652 | while (nfields-- > 0) | |
3653 | { | |
3654 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
3655 | switch (fip->fields->accessibility) | |
3656 | { | |
c5aa993b JM |
3657 | case DW_ACCESS_private: |
3658 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3659 | break; | |
c906108c | 3660 | |
c5aa993b JM |
3661 | case DW_ACCESS_protected: |
3662 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3663 | break; | |
c906108c | 3664 | |
c5aa993b JM |
3665 | case DW_ACCESS_public: |
3666 | break; | |
c906108c | 3667 | |
c5aa993b JM |
3668 | default: |
3669 | /* Unknown accessibility. Complain and treat it as public. */ | |
3670 | { | |
e2e0b3e5 | 3671 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
4d3c2250 | 3672 | fip->fields->accessibility); |
c5aa993b JM |
3673 | } |
3674 | break; | |
c906108c SS |
3675 | } |
3676 | if (nfields < fip->nbaseclasses) | |
3677 | { | |
3678 | switch (fip->fields->virtuality) | |
3679 | { | |
c5aa993b JM |
3680 | case DW_VIRTUALITY_virtual: |
3681 | case DW_VIRTUALITY_pure_virtual: | |
3682 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
3683 | break; | |
c906108c SS |
3684 | } |
3685 | } | |
3686 | fip->fields = fip->fields->next; | |
3687 | } | |
3688 | } | |
3689 | ||
c906108c SS |
3690 | /* Add a member function to the proper fieldlist. */ |
3691 | ||
3692 | static void | |
107d2387 | 3693 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 3694 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 3695 | { |
e7c27a73 | 3696 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3697 | struct attribute *attr; |
3698 | struct fnfieldlist *flp; | |
3699 | int i; | |
3700 | struct fn_field *fnp; | |
3701 | char *fieldname; | |
3702 | char *physname; | |
3703 | struct nextfnfield *new_fnfield; | |
3704 | ||
2df3850c | 3705 | /* Get name of member function. */ |
39cbfefa DJ |
3706 | fieldname = dwarf2_name (die, cu); |
3707 | if (fieldname == NULL) | |
2df3850c | 3708 | return; |
c906108c | 3709 | |
2df3850c | 3710 | /* Get the mangled name. */ |
e142c38c | 3711 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
3712 | |
3713 | /* Look up member function name in fieldlist. */ | |
3714 | for (i = 0; i < fip->nfnfields; i++) | |
3715 | { | |
27bfe10e | 3716 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
3717 | break; |
3718 | } | |
3719 | ||
3720 | /* Create new list element if necessary. */ | |
3721 | if (i < fip->nfnfields) | |
3722 | flp = &fip->fnfieldlists[i]; | |
3723 | else | |
3724 | { | |
3725 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3726 | { | |
3727 | fip->fnfieldlists = (struct fnfieldlist *) | |
3728 | xrealloc (fip->fnfieldlists, | |
3729 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3730 | * sizeof (struct fnfieldlist)); |
c906108c | 3731 | if (fip->nfnfields == 0) |
c13c43fd | 3732 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
3733 | } |
3734 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
3735 | flp->name = fieldname; | |
3736 | flp->length = 0; | |
3737 | flp->head = NULL; | |
3738 | fip->nfnfields++; | |
3739 | } | |
3740 | ||
3741 | /* Create a new member function field and chain it to the field list | |
3742 | entry. */ | |
3743 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 3744 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
3745 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
3746 | new_fnfield->next = flp->head; | |
3747 | flp->head = new_fnfield; | |
3748 | flp->length++; | |
3749 | ||
3750 | /* Fill in the member function field info. */ | |
3751 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
3752 | /* The name is already allocated along with this objfile, so we don't |
3753 | need to duplicate it for the type. */ | |
3754 | fnp->physname = physname ? physname : ""; | |
c906108c SS |
3755 | fnp->type = alloc_type (objfile); |
3756 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
3757 | { | |
c906108c | 3758 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 3759 | |
e26fb1d7 DC |
3760 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
3761 | of the method itself (TYPE_CODE_METHOD). */ | |
3762 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
3763 | TYPE_TARGET_TYPE (die->type), |
3764 | TYPE_FIELDS (die->type), | |
3765 | TYPE_NFIELDS (die->type), | |
3766 | TYPE_VARARGS (die->type)); | |
c906108c SS |
3767 | |
3768 | /* Handle static member functions. | |
c5aa993b JM |
3769 | Dwarf2 has no clean way to discern C++ static and non-static |
3770 | member functions. G++ helps GDB by marking the first | |
3771 | parameter for non-static member functions (which is the | |
3772 | this pointer) as artificial. We obtain this information | |
3773 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
3774 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
3775 | fnp->voffset = VOFFSET_STATIC; | |
3776 | } | |
3777 | else | |
e2e0b3e5 | 3778 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 3779 | physname); |
c906108c SS |
3780 | |
3781 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 3782 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 3783 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
3784 | |
3785 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
3786 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
3787 | ||
3788 | /* Get accessibility. */ | |
e142c38c | 3789 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3790 | if (attr) |
3791 | { | |
3792 | switch (DW_UNSND (attr)) | |
3793 | { | |
c5aa993b JM |
3794 | case DW_ACCESS_private: |
3795 | fnp->is_private = 1; | |
3796 | break; | |
3797 | case DW_ACCESS_protected: | |
3798 | fnp->is_protected = 1; | |
3799 | break; | |
c906108c SS |
3800 | } |
3801 | } | |
3802 | ||
b02dede2 | 3803 | /* Check for artificial methods. */ |
e142c38c | 3804 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3805 | if (attr && DW_UNSND (attr) != 0) |
3806 | fnp->is_artificial = 1; | |
3807 | ||
c906108c | 3808 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3809 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3810 | if (attr) |
8e19ed76 PS |
3811 | { |
3812 | /* Support the .debug_loc offsets */ | |
3813 | if (attr_form_is_block (attr)) | |
3814 | { | |
e7c27a73 | 3815 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 | 3816 | } |
3690dd37 | 3817 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 3818 | { |
4d3c2250 | 3819 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3820 | } |
3821 | else | |
3822 | { | |
4d3c2250 KB |
3823 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3824 | fieldname); | |
8e19ed76 PS |
3825 | } |
3826 | } | |
c906108c SS |
3827 | } |
3828 | ||
3829 | /* Create the vector of member function fields, and attach it to the type. */ | |
3830 | ||
3831 | static void | |
fba45db2 | 3832 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3833 | struct dwarf2_cu *cu) |
c906108c SS |
3834 | { |
3835 | struct fnfieldlist *flp; | |
3836 | int total_length = 0; | |
3837 | int i; | |
3838 | ||
3839 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3840 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
3841 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
3842 | ||
3843 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
3844 | { | |
3845 | struct nextfnfield *nfp = flp->head; | |
3846 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
3847 | int k; | |
3848 | ||
3849 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
3850 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
3851 | fn_flp->fn_fields = (struct fn_field *) | |
3852 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
3853 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 3854 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
3855 | |
3856 | total_length += flp->length; | |
3857 | } | |
3858 | ||
3859 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
3860 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
3861 | } | |
3862 | ||
1168df01 JB |
3863 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
3864 | language, zero otherwise. */ | |
3865 | static int | |
3866 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
3867 | { | |
3868 | static const char vptr[] = "_vptr"; | |
987504bb | 3869 | static const char vtable[] = "vtable"; |
1168df01 | 3870 | |
987504bb JJ |
3871 | /* Look for the C++ and Java forms of the vtable. */ |
3872 | if ((cu->language == language_java | |
3873 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
3874 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
3875 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
3876 | return 1; |
3877 | ||
3878 | return 0; | |
3879 | } | |
3880 | ||
c0dd20ea DJ |
3881 | /* GCC outputs unnamed structures that are really pointers to member |
3882 | functions, with the ABI-specified layout. If DIE (from CU) describes | |
3883 | such a structure, set its type, and return nonzero. Otherwise return | |
61049d3b DJ |
3884 | zero. |
3885 | ||
3886 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
3887 | This is GCC PR debug/28767. */ | |
c0dd20ea DJ |
3888 | |
3889 | static int | |
3890 | quirk_gcc_member_function_pointer (struct die_info *die, struct dwarf2_cu *cu) | |
3891 | { | |
3892 | struct objfile *objfile = cu->objfile; | |
3893 | struct type *type; | |
3894 | struct die_info *pfn_die, *delta_die; | |
3895 | struct attribute *pfn_name, *delta_name; | |
3896 | struct type *pfn_type, *domain_type; | |
3897 | ||
3898 | /* Check for a structure with no name and two children. */ | |
3899 | if (die->tag != DW_TAG_structure_type | |
3900 | || dwarf2_attr (die, DW_AT_name, cu) != NULL | |
3901 | || die->child == NULL | |
3902 | || die->child->sibling == NULL | |
3903 | || (die->child->sibling->sibling != NULL | |
3904 | && die->child->sibling->sibling->tag != DW_TAG_padding)) | |
3905 | return 0; | |
3906 | ||
3907 | /* Check for __pfn and __delta members. */ | |
3908 | pfn_die = die->child; | |
3909 | pfn_name = dwarf2_attr (pfn_die, DW_AT_name, cu); | |
3910 | if (pfn_die->tag != DW_TAG_member | |
3911 | || pfn_name == NULL | |
3912 | || DW_STRING (pfn_name) == NULL | |
3913 | || strcmp ("__pfn", DW_STRING (pfn_name)) != 0) | |
3914 | return 0; | |
3915 | ||
3916 | delta_die = pfn_die->sibling; | |
3917 | delta_name = dwarf2_attr (delta_die, DW_AT_name, cu); | |
3918 | if (delta_die->tag != DW_TAG_member | |
3919 | || delta_name == NULL | |
3920 | || DW_STRING (delta_name) == NULL | |
3921 | || strcmp ("__delta", DW_STRING (delta_name)) != 0) | |
3922 | return 0; | |
3923 | ||
3924 | /* Find the type of the method. */ | |
3925 | pfn_type = die_type (pfn_die, cu); | |
3926 | if (pfn_type == NULL | |
3927 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
3928 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
3929 | return 0; | |
3930 | ||
3931 | /* Look for the "this" argument. */ | |
3932 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
3933 | if (TYPE_NFIELDS (pfn_type) == 0 | |
3934 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) | |
3935 | return 0; | |
3936 | ||
3937 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
3938 | type = alloc_type (objfile); | |
3939 | smash_to_method_type (type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
3940 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), | |
3941 | TYPE_VARARGS (pfn_type)); | |
0d5de010 | 3942 | type = lookup_methodptr_type (type); |
c0dd20ea DJ |
3943 | set_die_type (die, type, cu); |
3944 | ||
3945 | return 1; | |
3946 | } | |
1168df01 | 3947 | |
c906108c SS |
3948 | /* Called when we find the DIE that starts a structure or union scope |
3949 | (definition) to process all dies that define the members of the | |
3950 | structure or union. | |
3951 | ||
3952 | NOTE: we need to call struct_type regardless of whether or not the | |
3953 | DIE has an at_name attribute, since it might be an anonymous | |
3954 | structure or union. This gets the type entered into our set of | |
3955 | user defined types. | |
3956 | ||
3957 | However, if the structure is incomplete (an opaque struct/union) | |
3958 | then suppress creating a symbol table entry for it since gdb only | |
3959 | wants to find the one with the complete definition. Note that if | |
3960 | it is complete, we just call new_symbol, which does it's own | |
3961 | checking about whether the struct/union is anonymous or not (and | |
3962 | suppresses creating a symbol table entry itself). */ | |
3963 | ||
3964 | static void | |
134d01f1 | 3965 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3966 | { |
e7c27a73 | 3967 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3968 | struct type *type; |
3969 | struct attribute *attr; | |
63d06c5c DC |
3970 | const char *previous_prefix = processing_current_prefix; |
3971 | struct cleanup *back_to = NULL; | |
39cbfefa | 3972 | char *name; |
c906108c | 3973 | |
134d01f1 DJ |
3974 | if (die->type) |
3975 | return; | |
3976 | ||
c0dd20ea DJ |
3977 | if (quirk_gcc_member_function_pointer (die, cu)) |
3978 | return; | |
c906108c | 3979 | |
c0dd20ea | 3980 | type = alloc_type (objfile); |
c906108c | 3981 | INIT_CPLUS_SPECIFIC (type); |
39cbfefa DJ |
3982 | name = dwarf2_name (die, cu); |
3983 | if (name != NULL) | |
c906108c | 3984 | { |
987504bb JJ |
3985 | if (cu->language == language_cplus |
3986 | || cu->language == language_java) | |
63d06c5c | 3987 | { |
8176b9b8 DC |
3988 | char *new_prefix = determine_class_name (die, cu); |
3989 | TYPE_TAG_NAME (type) = obsavestring (new_prefix, | |
3990 | strlen (new_prefix), | |
3991 | &objfile->objfile_obstack); | |
3992 | back_to = make_cleanup (xfree, new_prefix); | |
63d06c5c DC |
3993 | processing_current_prefix = new_prefix; |
3994 | } | |
3995 | else | |
3996 | { | |
d8151005 DJ |
3997 | /* The name is already allocated along with this objfile, so |
3998 | we don't need to duplicate it for the type. */ | |
39cbfefa | 3999 | TYPE_TAG_NAME (type) = name; |
63d06c5c | 4000 | } |
c906108c SS |
4001 | } |
4002 | ||
4003 | if (die->tag == DW_TAG_structure_type) | |
4004 | { | |
4005 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
4006 | } | |
4007 | else if (die->tag == DW_TAG_union_type) | |
4008 | { | |
4009 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
4010 | } | |
4011 | else | |
4012 | { | |
4013 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 4014 | in gdbtypes.h. */ |
c906108c SS |
4015 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
4016 | } | |
4017 | ||
e142c38c | 4018 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4019 | if (attr) |
4020 | { | |
4021 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4022 | } | |
4023 | else | |
4024 | { | |
4025 | TYPE_LENGTH (type) = 0; | |
4026 | } | |
4027 | ||
d77b6808 | 4028 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB_SUPPORTED; |
dc718098 JB |
4029 | if (die_is_declaration (die, cu)) |
4030 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
4031 | ||
c906108c SS |
4032 | /* We need to add the type field to the die immediately so we don't |
4033 | infinitely recurse when dealing with pointers to the structure | |
4034 | type within the structure itself. */ | |
1c379e20 | 4035 | set_die_type (die, type, cu); |
c906108c | 4036 | |
e142c38c | 4037 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
4038 | { |
4039 | struct field_info fi; | |
4040 | struct die_info *child_die; | |
4041 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
4042 | ||
4043 | memset (&fi, 0, sizeof (struct field_info)); | |
4044 | ||
639d11d3 | 4045 | child_die = die->child; |
c906108c SS |
4046 | |
4047 | while (child_die && child_die->tag) | |
4048 | { | |
a9a9bd0f DC |
4049 | if (child_die->tag == DW_TAG_member |
4050 | || child_die->tag == DW_TAG_variable) | |
c906108c | 4051 | { |
a9a9bd0f DC |
4052 | /* NOTE: carlton/2002-11-05: A C++ static data member |
4053 | should be a DW_TAG_member that is a declaration, but | |
4054 | all versions of G++ as of this writing (so through at | |
4055 | least 3.2.1) incorrectly generate DW_TAG_variable | |
4056 | tags for them instead. */ | |
e7c27a73 | 4057 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 4058 | } |
8713b1b1 | 4059 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
4060 | { |
4061 | /* C++ member function. */ | |
134d01f1 | 4062 | read_type_die (child_die, cu); |
e7c27a73 | 4063 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
4064 | } |
4065 | else if (child_die->tag == DW_TAG_inheritance) | |
4066 | { | |
4067 | /* C++ base class field. */ | |
e7c27a73 | 4068 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 4069 | } |
c906108c SS |
4070 | child_die = sibling_die (child_die); |
4071 | } | |
4072 | ||
4073 | /* Attach fields and member functions to the type. */ | |
4074 | if (fi.nfields) | |
e7c27a73 | 4075 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
4076 | if (fi.nfnfields) |
4077 | { | |
e7c27a73 | 4078 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 4079 | |
c5aa993b | 4080 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
4081 | class itself) which contains the vtable pointer for the current |
4082 | class from the DW_AT_containing_type attribute. */ | |
4083 | ||
e142c38c | 4084 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 4085 | { |
e7c27a73 | 4086 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
4087 | |
4088 | TYPE_VPTR_BASETYPE (type) = t; | |
4089 | if (type == t) | |
4090 | { | |
c906108c SS |
4091 | int i; |
4092 | ||
4093 | /* Our own class provides vtbl ptr. */ | |
4094 | for (i = TYPE_NFIELDS (t) - 1; | |
4095 | i >= TYPE_N_BASECLASSES (t); | |
4096 | --i) | |
4097 | { | |
4098 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
4099 | ||
1168df01 | 4100 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
4101 | { |
4102 | TYPE_VPTR_FIELDNO (type) = i; | |
4103 | break; | |
4104 | } | |
4105 | } | |
4106 | ||
4107 | /* Complain if virtual function table field not found. */ | |
4108 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 4109 | complaint (&symfile_complaints, |
e2e0b3e5 | 4110 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
4111 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
4112 | ""); | |
c906108c SS |
4113 | } |
4114 | else | |
4115 | { | |
4116 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
4117 | } | |
4118 | } | |
f6235d4c EZ |
4119 | else if (cu->producer |
4120 | && strncmp (cu->producer, | |
4121 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
4122 | { | |
4123 | /* The IBM XLC compiler does not provide direct indication | |
4124 | of the containing type, but the vtable pointer is | |
4125 | always named __vfp. */ | |
4126 | ||
4127 | int i; | |
4128 | ||
4129 | for (i = TYPE_NFIELDS (type) - 1; | |
4130 | i >= TYPE_N_BASECLASSES (type); | |
4131 | --i) | |
4132 | { | |
4133 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
4134 | { | |
4135 | TYPE_VPTR_FIELDNO (type) = i; | |
4136 | TYPE_VPTR_BASETYPE (type) = type; | |
4137 | break; | |
4138 | } | |
4139 | } | |
4140 | } | |
c906108c SS |
4141 | } |
4142 | ||
c906108c SS |
4143 | do_cleanups (back_to); |
4144 | } | |
63d06c5c DC |
4145 | |
4146 | processing_current_prefix = previous_prefix; | |
4147 | if (back_to != NULL) | |
4148 | do_cleanups (back_to); | |
c906108c SS |
4149 | } |
4150 | ||
134d01f1 DJ |
4151 | static void |
4152 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4153 | { | |
4154 | struct objfile *objfile = cu->objfile; | |
4155 | const char *previous_prefix = processing_current_prefix; | |
90aeadfc | 4156 | struct die_info *child_die = die->child; |
c906108c | 4157 | |
134d01f1 DJ |
4158 | if (TYPE_TAG_NAME (die->type) != NULL) |
4159 | processing_current_prefix = TYPE_TAG_NAME (die->type); | |
c906108c | 4160 | |
90aeadfc DC |
4161 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
4162 | snapshots) has been known to create a die giving a declaration | |
4163 | for a class that has, as a child, a die giving a definition for a | |
4164 | nested class. So we have to process our children even if the | |
4165 | current die is a declaration. Normally, of course, a declaration | |
4166 | won't have any children at all. */ | |
134d01f1 | 4167 | |
90aeadfc DC |
4168 | while (child_die != NULL && child_die->tag) |
4169 | { | |
4170 | if (child_die->tag == DW_TAG_member | |
4171 | || child_die->tag == DW_TAG_variable | |
4172 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 4173 | { |
90aeadfc | 4174 | /* Do nothing. */ |
134d01f1 | 4175 | } |
90aeadfc DC |
4176 | else |
4177 | process_die (child_die, cu); | |
134d01f1 | 4178 | |
90aeadfc | 4179 | child_die = sibling_die (child_die); |
134d01f1 DJ |
4180 | } |
4181 | ||
fa4028e9 JB |
4182 | /* Do not consider external references. According to the DWARF standard, |
4183 | these DIEs are identified by the fact that they have no byte_size | |
4184 | attribute, and a declaration attribute. */ | |
4185 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
4186 | || !die_is_declaration (die, cu)) | |
90aeadfc DC |
4187 | new_symbol (die, die->type, cu); |
4188 | ||
134d01f1 DJ |
4189 | processing_current_prefix = previous_prefix; |
4190 | } | |
4191 | ||
4192 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
4193 | complete the type's fields yet, or create any symbols. */ | |
c906108c SS |
4194 | |
4195 | static void | |
134d01f1 | 4196 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4197 | { |
e7c27a73 | 4198 | struct objfile *objfile = cu->objfile; |
c906108c | 4199 | struct type *type; |
c906108c | 4200 | struct attribute *attr; |
39cbfefa | 4201 | char *name; |
134d01f1 DJ |
4202 | |
4203 | if (die->type) | |
4204 | return; | |
c906108c SS |
4205 | |
4206 | type = alloc_type (objfile); | |
4207 | ||
4208 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
39cbfefa DJ |
4209 | name = dwarf2_name (die, cu); |
4210 | if (name != NULL) | |
c906108c | 4211 | { |
63d06c5c DC |
4212 | if (processing_has_namespace_info) |
4213 | { | |
987504bb JJ |
4214 | TYPE_TAG_NAME (type) = typename_concat (&objfile->objfile_obstack, |
4215 | processing_current_prefix, | |
4216 | name, cu); | |
63d06c5c DC |
4217 | } |
4218 | else | |
4219 | { | |
d8151005 DJ |
4220 | /* The name is already allocated along with this objfile, so |
4221 | we don't need to duplicate it for the type. */ | |
4222 | TYPE_TAG_NAME (type) = name; | |
63d06c5c | 4223 | } |
c906108c SS |
4224 | } |
4225 | ||
e142c38c | 4226 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4227 | if (attr) |
4228 | { | |
4229 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4230 | } | |
4231 | else | |
4232 | { | |
4233 | TYPE_LENGTH (type) = 0; | |
4234 | } | |
4235 | ||
1c379e20 | 4236 | set_die_type (die, type, cu); |
134d01f1 DJ |
4237 | } |
4238 | ||
8176b9b8 | 4239 | /* Determine the name of the type represented by DIE, which should be |
987504bb | 4240 | a named C++ or Java compound type. Return the name in question; the caller |
8176b9b8 DC |
4241 | is responsible for xfree()'ing it. */ |
4242 | ||
4243 | static char * | |
4244 | determine_class_name (struct die_info *die, struct dwarf2_cu *cu) | |
4245 | { | |
4246 | struct cleanup *back_to = NULL; | |
4247 | struct die_info *spec_die = die_specification (die, cu); | |
4248 | char *new_prefix = NULL; | |
4249 | ||
4250 | /* If this is the definition of a class that is declared by another | |
4251 | die, then processing_current_prefix may not be accurate; see | |
4252 | read_func_scope for a similar example. */ | |
4253 | if (spec_die != NULL) | |
4254 | { | |
4255 | char *specification_prefix = determine_prefix (spec_die, cu); | |
4256 | processing_current_prefix = specification_prefix; | |
4257 | back_to = make_cleanup (xfree, specification_prefix); | |
4258 | } | |
4259 | ||
4260 | /* If we don't have namespace debug info, guess the name by trying | |
4261 | to demangle the names of members, just like we did in | |
72bf9492 | 4262 | guess_structure_name. */ |
8176b9b8 DC |
4263 | if (!processing_has_namespace_info) |
4264 | { | |
4265 | struct die_info *child; | |
4266 | ||
4267 | for (child = die->child; | |
4268 | child != NULL && child->tag != 0; | |
4269 | child = sibling_die (child)) | |
4270 | { | |
4271 | if (child->tag == DW_TAG_subprogram) | |
4272 | { | |
31c27f77 JJ |
4273 | new_prefix |
4274 | = language_class_name_from_physname (cu->language_defn, | |
4275 | dwarf2_linkage_name | |
8176b9b8 DC |
4276 | (child, cu)); |
4277 | ||
4278 | if (new_prefix != NULL) | |
4279 | break; | |
4280 | } | |
4281 | } | |
4282 | } | |
4283 | ||
4284 | if (new_prefix == NULL) | |
4285 | { | |
4286 | const char *name = dwarf2_name (die, cu); | |
987504bb JJ |
4287 | new_prefix = typename_concat (NULL, processing_current_prefix, |
4288 | name ? name : "<<anonymous>>", | |
4289 | cu); | |
8176b9b8 DC |
4290 | } |
4291 | ||
4292 | if (back_to != NULL) | |
4293 | do_cleanups (back_to); | |
4294 | ||
4295 | return new_prefix; | |
4296 | } | |
4297 | ||
134d01f1 DJ |
4298 | /* Given a pointer to a die which begins an enumeration, process all |
4299 | the dies that define the members of the enumeration, and create the | |
4300 | symbol for the enumeration type. | |
4301 | ||
4302 | NOTE: We reverse the order of the element list. */ | |
4303 | ||
4304 | static void | |
4305 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4306 | { | |
4307 | struct objfile *objfile = cu->objfile; | |
4308 | struct die_info *child_die; | |
4309 | struct field *fields; | |
134d01f1 DJ |
4310 | struct symbol *sym; |
4311 | int num_fields; | |
4312 | int unsigned_enum = 1; | |
39cbfefa | 4313 | char *name; |
134d01f1 | 4314 | |
c906108c SS |
4315 | num_fields = 0; |
4316 | fields = NULL; | |
639d11d3 | 4317 | if (die->child != NULL) |
c906108c | 4318 | { |
639d11d3 | 4319 | child_die = die->child; |
c906108c SS |
4320 | while (child_die && child_die->tag) |
4321 | { | |
4322 | if (child_die->tag != DW_TAG_enumerator) | |
4323 | { | |
e7c27a73 | 4324 | process_die (child_die, cu); |
c906108c SS |
4325 | } |
4326 | else | |
4327 | { | |
39cbfefa DJ |
4328 | name = dwarf2_name (child_die, cu); |
4329 | if (name) | |
c906108c | 4330 | { |
134d01f1 | 4331 | sym = new_symbol (child_die, die->type, cu); |
c906108c SS |
4332 | if (SYMBOL_VALUE (sym) < 0) |
4333 | unsigned_enum = 0; | |
4334 | ||
4335 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4336 | { | |
4337 | fields = (struct field *) | |
4338 | xrealloc (fields, | |
4339 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4340 | * sizeof (struct field)); |
c906108c SS |
4341 | } |
4342 | ||
22abf04a | 4343 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
4344 | FIELD_TYPE (fields[num_fields]) = NULL; |
4345 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
4346 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 4347 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
4348 | |
4349 | num_fields++; | |
4350 | } | |
4351 | } | |
4352 | ||
4353 | child_die = sibling_die (child_die); | |
4354 | } | |
4355 | ||
4356 | if (num_fields) | |
4357 | { | |
134d01f1 DJ |
4358 | TYPE_NFIELDS (die->type) = num_fields; |
4359 | TYPE_FIELDS (die->type) = (struct field *) | |
4360 | TYPE_ALLOC (die->type, sizeof (struct field) * num_fields); | |
4361 | memcpy (TYPE_FIELDS (die->type), fields, | |
c906108c | 4362 | sizeof (struct field) * num_fields); |
b8c9b27d | 4363 | xfree (fields); |
c906108c SS |
4364 | } |
4365 | if (unsigned_enum) | |
134d01f1 | 4366 | TYPE_FLAGS (die->type) |= TYPE_FLAG_UNSIGNED; |
c906108c | 4367 | } |
134d01f1 DJ |
4368 | |
4369 | new_symbol (die, die->type, cu); | |
c906108c SS |
4370 | } |
4371 | ||
4372 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
4373 | the DIE's type field. For now, this only handles one dimensional | |
4374 | arrays. */ | |
4375 | ||
4376 | static void | |
e7c27a73 | 4377 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4378 | { |
e7c27a73 | 4379 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4380 | struct die_info *child_die; |
4381 | struct type *type = NULL; | |
4382 | struct type *element_type, *range_type, *index_type; | |
4383 | struct type **range_types = NULL; | |
4384 | struct attribute *attr; | |
4385 | int ndim = 0; | |
4386 | struct cleanup *back_to; | |
39cbfefa | 4387 | char *name; |
c906108c SS |
4388 | |
4389 | /* Return if we've already decoded this type. */ | |
4390 | if (die->type) | |
4391 | { | |
4392 | return; | |
4393 | } | |
4394 | ||
e7c27a73 | 4395 | element_type = die_type (die, cu); |
c906108c SS |
4396 | |
4397 | /* Irix 6.2 native cc creates array types without children for | |
4398 | arrays with unspecified length. */ | |
639d11d3 | 4399 | if (die->child == NULL) |
c906108c | 4400 | { |
6ccb9162 | 4401 | index_type = builtin_type_int32; |
c906108c | 4402 | range_type = create_range_type (NULL, index_type, 0, -1); |
1c379e20 DJ |
4403 | set_die_type (die, create_array_type (NULL, element_type, range_type), |
4404 | cu); | |
c906108c SS |
4405 | return; |
4406 | } | |
4407 | ||
4408 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 4409 | child_die = die->child; |
c906108c SS |
4410 | while (child_die && child_die->tag) |
4411 | { | |
4412 | if (child_die->tag == DW_TAG_subrange_type) | |
4413 | { | |
a02abb62 | 4414 | read_subrange_type (child_die, cu); |
c906108c | 4415 | |
a02abb62 JB |
4416 | if (child_die->type != NULL) |
4417 | { | |
4418 | /* The range type was succesfully read. Save it for | |
4419 | the array type creation. */ | |
4420 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
4421 | { | |
4422 | range_types = (struct type **) | |
4423 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
4424 | * sizeof (struct type *)); | |
4425 | if (ndim == 0) | |
4426 | make_cleanup (free_current_contents, &range_types); | |
4427 | } | |
4428 | range_types[ndim++] = child_die->type; | |
4429 | } | |
c906108c SS |
4430 | } |
4431 | child_die = sibling_die (child_die); | |
4432 | } | |
4433 | ||
4434 | /* Dwarf2 dimensions are output from left to right, create the | |
4435 | necessary array types in backwards order. */ | |
7ca2d3a3 | 4436 | |
c906108c | 4437 | type = element_type; |
7ca2d3a3 DL |
4438 | |
4439 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
4440 | { | |
4441 | int i = 0; | |
4442 | while (i < ndim) | |
4443 | type = create_array_type (NULL, type, range_types[i++]); | |
4444 | } | |
4445 | else | |
4446 | { | |
4447 | while (ndim-- > 0) | |
4448 | type = create_array_type (NULL, type, range_types[ndim]); | |
4449 | } | |
c906108c | 4450 | |
f5f8a009 EZ |
4451 | /* Understand Dwarf2 support for vector types (like they occur on |
4452 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
4453 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
4454 | custom vendor extension. The main difference between a regular | |
4455 | array and the vector variant is that vectors are passed by value | |
4456 | to functions. */ | |
e142c38c | 4457 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 4458 | if (attr) |
ea37ba09 | 4459 | make_vector_type (type); |
f5f8a009 | 4460 | |
39cbfefa DJ |
4461 | name = dwarf2_name (die, cu); |
4462 | if (name) | |
4463 | TYPE_NAME (type) = name; | |
714e295e | 4464 | |
c906108c SS |
4465 | do_cleanups (back_to); |
4466 | ||
4467 | /* Install the type in the die. */ | |
1c379e20 | 4468 | set_die_type (die, type, cu); |
c906108c SS |
4469 | } |
4470 | ||
7ca2d3a3 DL |
4471 | static enum dwarf_array_dim_ordering |
4472 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
4473 | { | |
4474 | struct attribute *attr; | |
4475 | ||
4476 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
4477 | ||
4478 | if (attr) return DW_SND (attr); | |
4479 | ||
4480 | /* | |
4481 | GNU F77 is a special case, as at 08/2004 array type info is the | |
4482 | opposite order to the dwarf2 specification, but data is still | |
4483 | laid out as per normal fortran. | |
4484 | ||
4485 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
4486 | version checking. | |
4487 | */ | |
4488 | ||
4489 | if (cu->language == language_fortran && | |
4490 | cu->producer && strstr (cu->producer, "GNU F77")) | |
4491 | { | |
4492 | return DW_ORD_row_major; | |
4493 | } | |
4494 | ||
4495 | switch (cu->language_defn->la_array_ordering) | |
4496 | { | |
4497 | case array_column_major: | |
4498 | return DW_ORD_col_major; | |
4499 | case array_row_major: | |
4500 | default: | |
4501 | return DW_ORD_row_major; | |
4502 | }; | |
4503 | } | |
4504 | ||
72019c9c GM |
4505 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
4506 | the DIE's type field. */ | |
4507 | ||
4508 | static void | |
4509 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) | |
4510 | { | |
4511 | if (die->type == NULL) | |
4512 | die->type = create_set_type ((struct type *) NULL, die_type (die, cu)); | |
4513 | } | |
7ca2d3a3 | 4514 | |
c906108c SS |
4515 | /* First cut: install each common block member as a global variable. */ |
4516 | ||
4517 | static void | |
e7c27a73 | 4518 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4519 | { |
4520 | struct die_info *child_die; | |
4521 | struct attribute *attr; | |
4522 | struct symbol *sym; | |
4523 | CORE_ADDR base = (CORE_ADDR) 0; | |
4524 | ||
e142c38c | 4525 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
4526 | if (attr) |
4527 | { | |
8e19ed76 PS |
4528 | /* Support the .debug_loc offsets */ |
4529 | if (attr_form_is_block (attr)) | |
4530 | { | |
e7c27a73 | 4531 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 | 4532 | } |
3690dd37 | 4533 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 4534 | { |
4d3c2250 | 4535 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4536 | } |
4537 | else | |
4538 | { | |
4d3c2250 KB |
4539 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4540 | "common block member"); | |
8e19ed76 | 4541 | } |
c906108c | 4542 | } |
639d11d3 | 4543 | if (die->child != NULL) |
c906108c | 4544 | { |
639d11d3 | 4545 | child_die = die->child; |
c906108c SS |
4546 | while (child_die && child_die->tag) |
4547 | { | |
e7c27a73 | 4548 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 4549 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
4550 | if (attr) |
4551 | { | |
4552 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 4553 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
4554 | add_symbol_to_list (sym, &global_symbols); |
4555 | } | |
4556 | child_die = sibling_die (child_die); | |
4557 | } | |
4558 | } | |
4559 | } | |
4560 | ||
d9fa45fe DC |
4561 | /* Read a C++ namespace. */ |
4562 | ||
d9fa45fe | 4563 | static void |
e7c27a73 | 4564 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 4565 | { |
e7c27a73 | 4566 | struct objfile *objfile = cu->objfile; |
38d518c9 | 4567 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 4568 | const char *name; |
9219021c DC |
4569 | int is_anonymous; |
4570 | struct die_info *current_die; | |
987504bb | 4571 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
9219021c | 4572 | |
e142c38c | 4573 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
4574 | |
4575 | /* Now build the name of the current namespace. */ | |
4576 | ||
38d518c9 | 4577 | if (previous_prefix[0] == '\0') |
9219021c | 4578 | { |
38d518c9 | 4579 | processing_current_prefix = name; |
9219021c DC |
4580 | } |
4581 | else | |
4582 | { | |
987504bb JJ |
4583 | char *temp_name = typename_concat (NULL, previous_prefix, name, cu); |
4584 | make_cleanup (xfree, temp_name); | |
38d518c9 | 4585 | processing_current_prefix = temp_name; |
9219021c DC |
4586 | } |
4587 | ||
5c4e30ca DC |
4588 | /* Add a symbol associated to this if we haven't seen the namespace |
4589 | before. Also, add a using directive if it's an anonymous | |
4590 | namespace. */ | |
9219021c | 4591 | |
e142c38c | 4592 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
4593 | { |
4594 | struct type *type; | |
4595 | ||
4596 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
4597 | this cast will hopefully become unnecessary. */ | |
4598 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 4599 | (char *) processing_current_prefix, |
5c4e30ca DC |
4600 | objfile); |
4601 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
4602 | ||
e7c27a73 | 4603 | new_symbol (die, type, cu); |
1c379e20 | 4604 | set_die_type (die, type, cu); |
5c4e30ca DC |
4605 | |
4606 | if (is_anonymous) | |
38d518c9 EZ |
4607 | cp_add_using_directive (processing_current_prefix, |
4608 | strlen (previous_prefix), | |
4609 | strlen (processing_current_prefix)); | |
5c4e30ca | 4610 | } |
9219021c | 4611 | |
639d11d3 | 4612 | if (die->child != NULL) |
d9fa45fe | 4613 | { |
639d11d3 | 4614 | struct die_info *child_die = die->child; |
d9fa45fe DC |
4615 | |
4616 | while (child_die && child_die->tag) | |
4617 | { | |
e7c27a73 | 4618 | process_die (child_die, cu); |
d9fa45fe DC |
4619 | child_die = sibling_die (child_die); |
4620 | } | |
4621 | } | |
9219021c | 4622 | |
38d518c9 | 4623 | processing_current_prefix = previous_prefix; |
987504bb | 4624 | do_cleanups (back_to); |
38d518c9 EZ |
4625 | } |
4626 | ||
4627 | /* Return the name of the namespace represented by DIE. Set | |
4628 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
4629 | namespace. */ | |
4630 | ||
4631 | static const char * | |
e142c38c | 4632 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
4633 | { |
4634 | struct die_info *current_die; | |
4635 | const char *name = NULL; | |
4636 | ||
4637 | /* Loop through the extensions until we find a name. */ | |
4638 | ||
4639 | for (current_die = die; | |
4640 | current_die != NULL; | |
e142c38c | 4641 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 4642 | { |
e142c38c | 4643 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
4644 | if (name != NULL) |
4645 | break; | |
4646 | } | |
4647 | ||
4648 | /* Is it an anonymous namespace? */ | |
4649 | ||
4650 | *is_anonymous = (name == NULL); | |
4651 | if (*is_anonymous) | |
4652 | name = "(anonymous namespace)"; | |
4653 | ||
4654 | return name; | |
d9fa45fe DC |
4655 | } |
4656 | ||
c906108c SS |
4657 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
4658 | the user defined type vector. */ | |
4659 | ||
4660 | static void | |
e7c27a73 | 4661 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4662 | { |
e7c27a73 | 4663 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 4664 | struct type *type; |
8b2dbe47 KB |
4665 | struct attribute *attr_byte_size; |
4666 | struct attribute *attr_address_class; | |
4667 | int byte_size, addr_class; | |
c906108c SS |
4668 | |
4669 | if (die->type) | |
4670 | { | |
4671 | return; | |
4672 | } | |
4673 | ||
e7c27a73 | 4674 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 4675 | |
e142c38c | 4676 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
4677 | if (attr_byte_size) |
4678 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 4679 | else |
8b2dbe47 KB |
4680 | byte_size = cu_header->addr_size; |
4681 | ||
e142c38c | 4682 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
4683 | if (attr_address_class) |
4684 | addr_class = DW_UNSND (attr_address_class); | |
4685 | else | |
4686 | addr_class = DW_ADDR_none; | |
4687 | ||
4688 | /* If the pointer size or address class is different than the | |
4689 | default, create a type variant marked as such and set the | |
4690 | length accordingly. */ | |
4691 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 4692 | { |
849957d9 | 4693 | if (gdbarch_address_class_type_flags_p (current_gdbarch)) |
8b2dbe47 KB |
4694 | { |
4695 | int type_flags; | |
4696 | ||
849957d9 UW |
4697 | type_flags = gdbarch_address_class_type_flags |
4698 | (current_gdbarch, byte_size, addr_class); | |
8b2dbe47 KB |
4699 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); |
4700 | type = make_type_with_address_space (type, type_flags); | |
4701 | } | |
4702 | else if (TYPE_LENGTH (type) != byte_size) | |
4703 | { | |
e2e0b3e5 | 4704 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 KB |
4705 | } |
4706 | else { | |
4707 | /* Should we also complain about unhandled address classes? */ | |
4708 | } | |
c906108c | 4709 | } |
8b2dbe47 KB |
4710 | |
4711 | TYPE_LENGTH (type) = byte_size; | |
1c379e20 | 4712 | set_die_type (die, type, cu); |
c906108c SS |
4713 | } |
4714 | ||
4715 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
4716 | the user defined type vector. */ | |
4717 | ||
4718 | static void | |
e7c27a73 | 4719 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4720 | { |
e7c27a73 | 4721 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4722 | struct type *type; |
4723 | struct type *to_type; | |
4724 | struct type *domain; | |
4725 | ||
4726 | if (die->type) | |
4727 | { | |
4728 | return; | |
4729 | } | |
4730 | ||
e7c27a73 DJ |
4731 | to_type = die_type (die, cu); |
4732 | domain = die_containing_type (die, cu); | |
0d5de010 DJ |
4733 | |
4734 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) | |
4735 | type = lookup_methodptr_type (to_type); | |
4736 | else | |
4737 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 4738 | |
1c379e20 | 4739 | set_die_type (die, type, cu); |
c906108c SS |
4740 | } |
4741 | ||
4742 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
4743 | the user defined type vector. */ | |
4744 | ||
4745 | static void | |
e7c27a73 | 4746 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4747 | { |
e7c27a73 | 4748 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4749 | struct type *type; |
4750 | struct attribute *attr; | |
4751 | ||
4752 | if (die->type) | |
4753 | { | |
4754 | return; | |
4755 | } | |
4756 | ||
e7c27a73 | 4757 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 4758 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4759 | if (attr) |
4760 | { | |
4761 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4762 | } | |
4763 | else | |
4764 | { | |
107d2387 | 4765 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 4766 | } |
1c379e20 | 4767 | set_die_type (die, type, cu); |
c906108c SS |
4768 | } |
4769 | ||
4770 | static void | |
e7c27a73 | 4771 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4772 | { |
090c42a4 JB |
4773 | struct type *base_type; |
4774 | ||
c906108c SS |
4775 | if (die->type) |
4776 | { | |
4777 | return; | |
4778 | } | |
4779 | ||
e7c27a73 | 4780 | base_type = die_type (die, cu); |
1c379e20 DJ |
4781 | set_die_type (die, make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0), |
4782 | cu); | |
c906108c SS |
4783 | } |
4784 | ||
4785 | static void | |
e7c27a73 | 4786 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4787 | { |
090c42a4 JB |
4788 | struct type *base_type; |
4789 | ||
c906108c SS |
4790 | if (die->type) |
4791 | { | |
4792 | return; | |
4793 | } | |
4794 | ||
e7c27a73 | 4795 | base_type = die_type (die, cu); |
1c379e20 DJ |
4796 | set_die_type (die, make_cv_type (TYPE_CONST (base_type), 1, base_type, 0), |
4797 | cu); | |
c906108c SS |
4798 | } |
4799 | ||
4800 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
4801 | the user defined type vector. It isn't really a user defined type, | |
4802 | but it behaves like one, with other DIE's using an AT_user_def_type | |
4803 | attribute to reference it. */ | |
4804 | ||
4805 | static void | |
e7c27a73 | 4806 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4807 | { |
e7c27a73 | 4808 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4809 | struct type *type, *range_type, *index_type, *char_type; |
4810 | struct attribute *attr; | |
4811 | unsigned int length; | |
4812 | ||
4813 | if (die->type) | |
4814 | { | |
4815 | return; | |
4816 | } | |
4817 | ||
e142c38c | 4818 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
4819 | if (attr) |
4820 | { | |
4821 | length = DW_UNSND (attr); | |
4822 | } | |
4823 | else | |
4824 | { | |
b21b22e0 | 4825 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 4826 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
4827 | if (attr) |
4828 | { | |
4829 | length = DW_UNSND (attr); | |
4830 | } | |
4831 | else | |
4832 | { | |
4833 | length = 1; | |
4834 | } | |
c906108c | 4835 | } |
6ccb9162 UW |
4836 | |
4837 | index_type = builtin_type_int32; | |
c906108c | 4838 | range_type = create_range_type (NULL, index_type, 1, length); |
6ccb9162 UW |
4839 | type = create_string_type (NULL, range_type); |
4840 | ||
1c379e20 | 4841 | set_die_type (die, type, cu); |
c906108c SS |
4842 | } |
4843 | ||
4844 | /* Handle DIES due to C code like: | |
4845 | ||
4846 | struct foo | |
c5aa993b JM |
4847 | { |
4848 | int (*funcp)(int a, long l); | |
4849 | int b; | |
4850 | }; | |
c906108c SS |
4851 | |
4852 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 4853 | */ |
c906108c SS |
4854 | |
4855 | static void | |
e7c27a73 | 4856 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4857 | { |
4858 | struct type *type; /* Type that this function returns */ | |
4859 | struct type *ftype; /* Function that returns above type */ | |
4860 | struct attribute *attr; | |
4861 | ||
4862 | /* Decode the type that this subroutine returns */ | |
4863 | if (die->type) | |
4864 | { | |
4865 | return; | |
4866 | } | |
e7c27a73 | 4867 | type = die_type (die, cu); |
1326e61b | 4868 | ftype = make_function_type (type, (struct type **) 0); |
c906108c | 4869 | |
5b8101ae | 4870 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 4871 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 4872 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 4873 | || cu->language == language_cplus |
5b8101ae PM |
4874 | || cu->language == language_java |
4875 | || cu->language == language_pascal) | |
c906108c SS |
4876 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
4877 | ||
639d11d3 | 4878 | if (die->child != NULL) |
c906108c SS |
4879 | { |
4880 | struct die_info *child_die; | |
4881 | int nparams = 0; | |
4882 | int iparams = 0; | |
4883 | ||
4884 | /* Count the number of parameters. | |
4885 | FIXME: GDB currently ignores vararg functions, but knows about | |
4886 | vararg member functions. */ | |
639d11d3 | 4887 | child_die = die->child; |
c906108c SS |
4888 | while (child_die && child_die->tag) |
4889 | { | |
4890 | if (child_die->tag == DW_TAG_formal_parameter) | |
4891 | nparams++; | |
4892 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
4893 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
4894 | child_die = sibling_die (child_die); | |
4895 | } | |
4896 | ||
4897 | /* Allocate storage for parameters and fill them in. */ | |
4898 | TYPE_NFIELDS (ftype) = nparams; | |
4899 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 4900 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 4901 | |
639d11d3 | 4902 | child_die = die->child; |
c906108c SS |
4903 | while (child_die && child_die->tag) |
4904 | { | |
4905 | if (child_die->tag == DW_TAG_formal_parameter) | |
4906 | { | |
4907 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
4908 | member functions. G++ helps GDB by marking the first |
4909 | parameter for non-static member functions (which is the | |
4910 | this pointer) as artificial. We pass this information | |
4911 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 4912 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
4913 | if (attr) |
4914 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
4915 | else | |
4916 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 4917 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
4918 | iparams++; |
4919 | } | |
4920 | child_die = sibling_die (child_die); | |
4921 | } | |
4922 | } | |
4923 | ||
1c379e20 | 4924 | set_die_type (die, ftype, cu); |
c906108c SS |
4925 | } |
4926 | ||
4927 | static void | |
e7c27a73 | 4928 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4929 | { |
e7c27a73 | 4930 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
4931 | struct attribute *attr; |
4932 | char *name = NULL; | |
c906108c SS |
4933 | |
4934 | if (!die->type) | |
4935 | { | |
39cbfefa | 4936 | name = dwarf2_name (die, cu); |
1c379e20 DJ |
4937 | set_die_type (die, init_type (TYPE_CODE_TYPEDEF, 0, |
4938 | TYPE_FLAG_TARGET_STUB, name, objfile), | |
4939 | cu); | |
e7c27a73 | 4940 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
4941 | } |
4942 | } | |
4943 | ||
4944 | /* Find a representation of a given base type and install | |
4945 | it in the TYPE field of the die. */ | |
4946 | ||
4947 | static void | |
e7c27a73 | 4948 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4949 | { |
e7c27a73 | 4950 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4951 | struct type *type; |
4952 | struct attribute *attr; | |
4953 | int encoding = 0, size = 0; | |
39cbfefa | 4954 | char *name; |
6ccb9162 UW |
4955 | enum type_code code = TYPE_CODE_INT; |
4956 | int type_flags = 0; | |
4957 | struct type *target_type = NULL; | |
c906108c SS |
4958 | |
4959 | /* If we've already decoded this die, this is a no-op. */ | |
4960 | if (die->type) | |
4961 | { | |
4962 | return; | |
4963 | } | |
4964 | ||
e142c38c | 4965 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
4966 | if (attr) |
4967 | { | |
4968 | encoding = DW_UNSND (attr); | |
4969 | } | |
e142c38c | 4970 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4971 | if (attr) |
4972 | { | |
4973 | size = DW_UNSND (attr); | |
4974 | } | |
39cbfefa | 4975 | name = dwarf2_name (die, cu); |
6ccb9162 | 4976 | if (!name) |
c906108c | 4977 | { |
6ccb9162 UW |
4978 | complaint (&symfile_complaints, |
4979 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 4980 | } |
6ccb9162 UW |
4981 | |
4982 | switch (encoding) | |
c906108c | 4983 | { |
6ccb9162 UW |
4984 | case DW_ATE_address: |
4985 | /* Turn DW_ATE_address into a void * pointer. */ | |
4986 | code = TYPE_CODE_PTR; | |
4987 | type_flags |= TYPE_FLAG_UNSIGNED; | |
4988 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
4989 | break; | |
4990 | case DW_ATE_boolean: | |
4991 | code = TYPE_CODE_BOOL; | |
4992 | type_flags |= TYPE_FLAG_UNSIGNED; | |
4993 | break; | |
4994 | case DW_ATE_complex_float: | |
4995 | code = TYPE_CODE_COMPLEX; | |
4996 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
4997 | break; | |
4998 | case DW_ATE_decimal_float: | |
4999 | code = TYPE_CODE_DECFLOAT; | |
5000 | break; | |
5001 | case DW_ATE_float: | |
5002 | code = TYPE_CODE_FLT; | |
5003 | break; | |
5004 | case DW_ATE_signed: | |
5005 | break; | |
5006 | case DW_ATE_unsigned: | |
5007 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5008 | break; | |
5009 | case DW_ATE_signed_char: | |
1760d9d5 | 5010 | if (cu->language == language_ada || cu->language == language_m2) |
6ccb9162 UW |
5011 | code = TYPE_CODE_CHAR; |
5012 | break; | |
5013 | case DW_ATE_unsigned_char: | |
1760d9d5 | 5014 | if (cu->language == language_ada || cu->language == language_m2) |
6ccb9162 UW |
5015 | code = TYPE_CODE_CHAR; |
5016 | type_flags |= TYPE_FLAG_UNSIGNED; | |
5017 | break; | |
5018 | default: | |
5019 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
5020 | dwarf_type_encoding_name (encoding)); | |
5021 | break; | |
c906108c | 5022 | } |
6ccb9162 UW |
5023 | |
5024 | type = init_type (code, size, type_flags, name, objfile); | |
5025 | TYPE_TARGET_TYPE (type) = target_type; | |
5026 | ||
1c379e20 | 5027 | set_die_type (die, type, cu); |
c906108c SS |
5028 | } |
5029 | ||
a02abb62 JB |
5030 | /* Read the given DW_AT_subrange DIE. */ |
5031 | ||
5032 | static void | |
5033 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
5034 | { | |
5035 | struct type *base_type; | |
5036 | struct type *range_type; | |
5037 | struct attribute *attr; | |
5038 | int low = 0; | |
5039 | int high = -1; | |
39cbfefa | 5040 | char *name; |
a02abb62 JB |
5041 | |
5042 | /* If we have already decoded this die, then nothing more to do. */ | |
5043 | if (die->type) | |
5044 | return; | |
5045 | ||
5046 | base_type = die_type (die, cu); | |
3d1f72c2 | 5047 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
a02abb62 JB |
5048 | { |
5049 | complaint (&symfile_complaints, | |
e2e0b3e5 | 5050 | _("DW_AT_type missing from DW_TAG_subrange_type")); |
17a912b6 | 5051 | base_type |
6ccb9162 UW |
5052 | = init_type (TYPE_CODE_INT, gdbarch_addr_bit (current_gdbarch) / 8, |
5053 | 0, NULL, cu->objfile); | |
a02abb62 JB |
5054 | } |
5055 | ||
e142c38c | 5056 | if (cu->language == language_fortran) |
a02abb62 JB |
5057 | { |
5058 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
5059 | low = 1; | |
5060 | } | |
5061 | ||
dd5e6932 DJ |
5062 | /* FIXME: For variable sized arrays either of these could be |
5063 | a variable rather than a constant value. We'll allow it, | |
5064 | but we don't know how to handle it. */ | |
e142c38c | 5065 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
5066 | if (attr) |
5067 | low = dwarf2_get_attr_constant_value (attr, 0); | |
5068 | ||
e142c38c | 5069 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
5070 | if (attr) |
5071 | { | |
5072 | if (attr->form == DW_FORM_block1) | |
5073 | { | |
5074 | /* GCC encodes arrays with unspecified or dynamic length | |
5075 | with a DW_FORM_block1 attribute. | |
5076 | FIXME: GDB does not yet know how to handle dynamic | |
5077 | arrays properly, treat them as arrays with unspecified | |
5078 | length for now. | |
5079 | ||
5080 | FIXME: jimb/2003-09-22: GDB does not really know | |
5081 | how to handle arrays of unspecified length | |
5082 | either; we just represent them as zero-length | |
5083 | arrays. Choose an appropriate upper bound given | |
5084 | the lower bound we've computed above. */ | |
5085 | high = low - 1; | |
5086 | } | |
5087 | else | |
5088 | high = dwarf2_get_attr_constant_value (attr, 1); | |
5089 | } | |
5090 | ||
5091 | range_type = create_range_type (NULL, base_type, low, high); | |
5092 | ||
39cbfefa DJ |
5093 | name = dwarf2_name (die, cu); |
5094 | if (name) | |
5095 | TYPE_NAME (range_type) = name; | |
a02abb62 | 5096 | |
e142c38c | 5097 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
5098 | if (attr) |
5099 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
5100 | ||
1c379e20 | 5101 | set_die_type (die, range_type, cu); |
a02abb62 JB |
5102 | } |
5103 | ||
81a17f79 JB |
5104 | static void |
5105 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) | |
5106 | { | |
5107 | struct type *type; | |
81a17f79 JB |
5108 | |
5109 | if (die->type) | |
5110 | return; | |
5111 | ||
5112 | /* For now, we only support the C meaning of an unspecified type: void. */ | |
5113 | ||
39cbfefa | 5114 | type = init_type (TYPE_CODE_VOID, 0, 0, dwarf2_name (die, cu), |
81a17f79 JB |
5115 | cu->objfile); |
5116 | ||
5117 | set_die_type (die, type, cu); | |
5118 | } | |
a02abb62 | 5119 | |
c906108c SS |
5120 | /* Read a whole compilation unit into a linked list of dies. */ |
5121 | ||
f9aca02d | 5122 | static struct die_info * |
fe1b8b76 | 5123 | read_comp_unit (gdb_byte *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5124 | { |
e7c27a73 | 5125 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
5126 | } |
5127 | ||
5128 | /* Read a single die and all its descendents. Set the die's sibling | |
5129 | field to NULL; set other fields in the die correctly, and set all | |
5130 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
5131 | location of the info_ptr after reading all of those dies. PARENT | |
5132 | is the parent of the die in question. */ | |
5133 | ||
5134 | static struct die_info * | |
fe1b8b76 | 5135 | read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 5136 | struct dwarf2_cu *cu, |
fe1b8b76 | 5137 | gdb_byte **new_info_ptr, |
639d11d3 DC |
5138 | struct die_info *parent) |
5139 | { | |
5140 | struct die_info *die; | |
fe1b8b76 | 5141 | gdb_byte *cur_ptr; |
639d11d3 DC |
5142 | int has_children; |
5143 | ||
e7c27a73 | 5144 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
10b3939b | 5145 | store_in_ref_table (die->offset, die, cu); |
639d11d3 DC |
5146 | |
5147 | if (has_children) | |
5148 | { | |
e7c27a73 | 5149 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
5150 | new_info_ptr, die); |
5151 | } | |
5152 | else | |
5153 | { | |
5154 | die->child = NULL; | |
5155 | *new_info_ptr = cur_ptr; | |
5156 | } | |
5157 | ||
5158 | die->sibling = NULL; | |
5159 | die->parent = parent; | |
5160 | return die; | |
5161 | } | |
5162 | ||
5163 | /* Read a die, all of its descendents, and all of its siblings; set | |
5164 | all of the fields of all of the dies correctly. Arguments are as | |
5165 | in read_die_and_children. */ | |
5166 | ||
5167 | static struct die_info * | |
fe1b8b76 | 5168 | read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 5169 | struct dwarf2_cu *cu, |
fe1b8b76 | 5170 | gdb_byte **new_info_ptr, |
639d11d3 DC |
5171 | struct die_info *parent) |
5172 | { | |
5173 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 5174 | gdb_byte *cur_ptr; |
639d11d3 | 5175 | |
c906108c | 5176 | cur_ptr = info_ptr; |
639d11d3 DC |
5177 | first_die = last_sibling = NULL; |
5178 | ||
5179 | while (1) | |
c906108c | 5180 | { |
639d11d3 | 5181 | struct die_info *die |
e7c27a73 | 5182 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
5183 | |
5184 | if (!first_die) | |
c906108c | 5185 | { |
639d11d3 | 5186 | first_die = die; |
c906108c | 5187 | } |
639d11d3 | 5188 | else |
c906108c | 5189 | { |
639d11d3 | 5190 | last_sibling->sibling = die; |
c906108c SS |
5191 | } |
5192 | ||
639d11d3 | 5193 | if (die->tag == 0) |
c906108c | 5194 | { |
639d11d3 DC |
5195 | *new_info_ptr = cur_ptr; |
5196 | return first_die; | |
c906108c SS |
5197 | } |
5198 | else | |
5199 | { | |
639d11d3 | 5200 | last_sibling = die; |
c906108c SS |
5201 | } |
5202 | } | |
c906108c SS |
5203 | } |
5204 | ||
5205 | /* Free a linked list of dies. */ | |
5206 | ||
5207 | static void | |
fba45db2 | 5208 | free_die_list (struct die_info *dies) |
c906108c SS |
5209 | { |
5210 | struct die_info *die, *next; | |
5211 | ||
5212 | die = dies; | |
5213 | while (die) | |
5214 | { | |
639d11d3 DC |
5215 | if (die->child != NULL) |
5216 | free_die_list (die->child); | |
5217 | next = die->sibling; | |
b8c9b27d KB |
5218 | xfree (die->attrs); |
5219 | xfree (die); | |
c906108c SS |
5220 | die = next; |
5221 | } | |
5222 | } | |
5223 | ||
5224 | /* Read the contents of the section at OFFSET and of size SIZE from the | |
8b92e4d5 | 5225 | object file specified by OBJFILE into the objfile_obstack and return it. */ |
c906108c | 5226 | |
fe1b8b76 | 5227 | gdb_byte * |
188dd5d6 | 5228 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
5229 | { |
5230 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 5231 | gdb_byte *buf, *retbuf; |
2c500098 | 5232 | bfd_size_type size = bfd_get_section_size (sectp); |
c906108c SS |
5233 | |
5234 | if (size == 0) | |
5235 | return NULL; | |
5236 | ||
fe1b8b76 JB |
5237 | buf = obstack_alloc (&objfile->objfile_obstack, size); |
5238 | retbuf = symfile_relocate_debug_section (abfd, sectp, buf); | |
086df311 DJ |
5239 | if (retbuf != NULL) |
5240 | return retbuf; | |
5241 | ||
188dd5d6 DJ |
5242 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
5243 | || bfd_bread (buf, size, abfd) != size) | |
8a3fe4f8 | 5244 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
188dd5d6 DJ |
5245 | bfd_get_filename (abfd)); |
5246 | ||
c906108c SS |
5247 | return buf; |
5248 | } | |
5249 | ||
5250 | /* In DWARF version 2, the description of the debugging information is | |
5251 | stored in a separate .debug_abbrev section. Before we read any | |
5252 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
5253 | in a hash table. This function also sets flags in CU describing |
5254 | the data found in the abbrev table. */ | |
c906108c SS |
5255 | |
5256 | static void | |
e7c27a73 | 5257 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5258 | { |
e7c27a73 | 5259 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 5260 | gdb_byte *abbrev_ptr; |
c906108c SS |
5261 | struct abbrev_info *cur_abbrev; |
5262 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
5263 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
5264 | struct attr_abbrev *cur_attrs; |
5265 | unsigned int allocated_attrs; | |
c906108c | 5266 | |
57349743 | 5267 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
5268 | obstack_init (&cu->abbrev_obstack); |
5269 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
5270 | (ABBREV_HASH_SIZE | |
5271 | * sizeof (struct abbrev_info *))); | |
5272 | memset (cu->dwarf2_abbrevs, 0, | |
5273 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 5274 | |
6502dd73 | 5275 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
5276 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5277 | abbrev_ptr += bytes_read; | |
5278 | ||
f3dd6933 DJ |
5279 | allocated_attrs = ATTR_ALLOC_CHUNK; |
5280 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
5281 | ||
c906108c SS |
5282 | /* loop until we reach an abbrev number of 0 */ |
5283 | while (abbrev_number) | |
5284 | { | |
f3dd6933 | 5285 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
5286 | |
5287 | /* read in abbrev header */ | |
5288 | cur_abbrev->number = abbrev_number; | |
5289 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5290 | abbrev_ptr += bytes_read; | |
5291 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
5292 | abbrev_ptr += 1; | |
5293 | ||
72bf9492 DJ |
5294 | if (cur_abbrev->tag == DW_TAG_namespace) |
5295 | cu->has_namespace_info = 1; | |
5296 | ||
c906108c SS |
5297 | /* now read in declarations */ |
5298 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5299 | abbrev_ptr += bytes_read; | |
5300 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5301 | abbrev_ptr += bytes_read; | |
5302 | while (abbrev_name) | |
5303 | { | |
f3dd6933 | 5304 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 5305 | { |
f3dd6933 DJ |
5306 | allocated_attrs += ATTR_ALLOC_CHUNK; |
5307 | cur_attrs | |
5308 | = xrealloc (cur_attrs, (allocated_attrs | |
5309 | * sizeof (struct attr_abbrev))); | |
c906108c | 5310 | } |
ae038cb0 DJ |
5311 | |
5312 | /* Record whether this compilation unit might have | |
5313 | inter-compilation-unit references. If we don't know what form | |
5314 | this attribute will have, then it might potentially be a | |
5315 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
5316 | references. */ | |
5317 | ||
5318 | if (abbrev_form == DW_FORM_ref_addr | |
5319 | || abbrev_form == DW_FORM_indirect) | |
5320 | cu->has_form_ref_addr = 1; | |
5321 | ||
f3dd6933 DJ |
5322 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
5323 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
5324 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5325 | abbrev_ptr += bytes_read; | |
5326 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5327 | abbrev_ptr += bytes_read; | |
5328 | } | |
5329 | ||
f3dd6933 DJ |
5330 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
5331 | (cur_abbrev->num_attrs | |
5332 | * sizeof (struct attr_abbrev))); | |
5333 | memcpy (cur_abbrev->attrs, cur_attrs, | |
5334 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
5335 | ||
c906108c | 5336 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
5337 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
5338 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
5339 | |
5340 | /* Get next abbreviation. | |
5341 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
5342 | always properly terminated with an abbrev number of 0. |
5343 | Exit loop if we encounter an abbreviation which we have | |
5344 | already read (which means we are about to read the abbreviations | |
5345 | for the next compile unit) or if the end of the abbreviation | |
5346 | table is reached. */ | |
6502dd73 DJ |
5347 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev_buffer) |
5348 | >= dwarf2_per_objfile->abbrev_size) | |
c906108c SS |
5349 | break; |
5350 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5351 | abbrev_ptr += bytes_read; | |
e7c27a73 | 5352 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
5353 | break; |
5354 | } | |
f3dd6933 DJ |
5355 | |
5356 | xfree (cur_attrs); | |
c906108c SS |
5357 | } |
5358 | ||
f3dd6933 | 5359 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 5360 | |
c906108c | 5361 | static void |
f3dd6933 | 5362 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 5363 | { |
f3dd6933 | 5364 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 5365 | |
f3dd6933 DJ |
5366 | obstack_free (&cu->abbrev_obstack, NULL); |
5367 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
5368 | } |
5369 | ||
5370 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
5371 | ||
5372 | static struct abbrev_info * | |
e7c27a73 | 5373 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
5374 | { |
5375 | unsigned int hash_number; | |
5376 | struct abbrev_info *abbrev; | |
5377 | ||
5378 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 5379 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
5380 | |
5381 | while (abbrev) | |
5382 | { | |
5383 | if (abbrev->number == number) | |
5384 | return abbrev; | |
5385 | else | |
5386 | abbrev = abbrev->next; | |
5387 | } | |
5388 | return NULL; | |
5389 | } | |
5390 | ||
72bf9492 DJ |
5391 | /* Returns nonzero if TAG represents a type that we might generate a partial |
5392 | symbol for. */ | |
5393 | ||
5394 | static int | |
5395 | is_type_tag_for_partial (int tag) | |
5396 | { | |
5397 | switch (tag) | |
5398 | { | |
5399 | #if 0 | |
5400 | /* Some types that would be reasonable to generate partial symbols for, | |
5401 | that we don't at present. */ | |
5402 | case DW_TAG_array_type: | |
5403 | case DW_TAG_file_type: | |
5404 | case DW_TAG_ptr_to_member_type: | |
5405 | case DW_TAG_set_type: | |
5406 | case DW_TAG_string_type: | |
5407 | case DW_TAG_subroutine_type: | |
5408 | #endif | |
5409 | case DW_TAG_base_type: | |
5410 | case DW_TAG_class_type: | |
680b30c7 | 5411 | case DW_TAG_interface_type: |
72bf9492 DJ |
5412 | case DW_TAG_enumeration_type: |
5413 | case DW_TAG_structure_type: | |
5414 | case DW_TAG_subrange_type: | |
5415 | case DW_TAG_typedef: | |
5416 | case DW_TAG_union_type: | |
5417 | return 1; | |
5418 | default: | |
5419 | return 0; | |
5420 | } | |
5421 | } | |
5422 | ||
5423 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
5424 | ||
5425 | static struct partial_die_info * | |
fe1b8b76 | 5426 | load_partial_dies (bfd *abfd, gdb_byte *info_ptr, int building_psymtab, |
72bf9492 DJ |
5427 | struct dwarf2_cu *cu) |
5428 | { | |
5429 | struct partial_die_info *part_die; | |
5430 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
5431 | struct abbrev_info *abbrev; | |
5432 | unsigned int bytes_read; | |
5afb4e99 | 5433 | unsigned int load_all = 0; |
72bf9492 DJ |
5434 | |
5435 | int nesting_level = 1; | |
5436 | ||
5437 | parent_die = NULL; | |
5438 | last_die = NULL; | |
5439 | ||
5afb4e99 DJ |
5440 | if (cu->per_cu && cu->per_cu->load_all_dies) |
5441 | load_all = 1; | |
5442 | ||
72bf9492 DJ |
5443 | cu->partial_dies |
5444 | = htab_create_alloc_ex (cu->header.length / 12, | |
5445 | partial_die_hash, | |
5446 | partial_die_eq, | |
5447 | NULL, | |
5448 | &cu->comp_unit_obstack, | |
5449 | hashtab_obstack_allocate, | |
5450 | dummy_obstack_deallocate); | |
5451 | ||
5452 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5453 | sizeof (struct partial_die_info)); | |
5454 | ||
5455 | while (1) | |
5456 | { | |
5457 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5458 | ||
5459 | /* A NULL abbrev means the end of a series of children. */ | |
5460 | if (abbrev == NULL) | |
5461 | { | |
5462 | if (--nesting_level == 0) | |
5463 | { | |
5464 | /* PART_DIE was probably the last thing allocated on the | |
5465 | comp_unit_obstack, so we could call obstack_free | |
5466 | here. We don't do that because the waste is small, | |
5467 | and will be cleaned up when we're done with this | |
5468 | compilation unit. This way, we're also more robust | |
5469 | against other users of the comp_unit_obstack. */ | |
5470 | return first_die; | |
5471 | } | |
5472 | info_ptr += bytes_read; | |
5473 | last_die = parent_die; | |
5474 | parent_die = parent_die->die_parent; | |
5475 | continue; | |
5476 | } | |
5477 | ||
5afb4e99 DJ |
5478 | /* Check whether this DIE is interesting enough to save. Normally |
5479 | we would not be interested in members here, but there may be | |
5480 | later variables referencing them via DW_AT_specification (for | |
5481 | static members). */ | |
5482 | if (!load_all | |
5483 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
5484 | && abbrev->tag != DW_TAG_enumerator |
5485 | && abbrev->tag != DW_TAG_subprogram | |
5486 | && abbrev->tag != DW_TAG_variable | |
5afb4e99 DJ |
5487 | && abbrev->tag != DW_TAG_namespace |
5488 | && abbrev->tag != DW_TAG_member) | |
72bf9492 DJ |
5489 | { |
5490 | /* Otherwise we skip to the next sibling, if any. */ | |
5491 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
5492 | continue; | |
5493 | } | |
5494 | ||
5495 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, | |
5496 | abfd, info_ptr, cu); | |
5497 | ||
5498 | /* This two-pass algorithm for processing partial symbols has a | |
5499 | high cost in cache pressure. Thus, handle some simple cases | |
5500 | here which cover the majority of C partial symbols. DIEs | |
5501 | which neither have specification tags in them, nor could have | |
5502 | specification tags elsewhere pointing at them, can simply be | |
5503 | processed and discarded. | |
5504 | ||
5505 | This segment is also optional; scan_partial_symbols and | |
5506 | add_partial_symbol will handle these DIEs if we chain | |
5507 | them in normally. When compilers which do not emit large | |
5508 | quantities of duplicate debug information are more common, | |
5509 | this code can probably be removed. */ | |
5510 | ||
5511 | /* Any complete simple types at the top level (pretty much all | |
5512 | of them, for a language without namespaces), can be processed | |
5513 | directly. */ | |
5514 | if (parent_die == NULL | |
5515 | && part_die->has_specification == 0 | |
5516 | && part_die->is_declaration == 0 | |
5517 | && (part_die->tag == DW_TAG_typedef | |
5518 | || part_die->tag == DW_TAG_base_type | |
5519 | || part_die->tag == DW_TAG_subrange_type)) | |
5520 | { | |
5521 | if (building_psymtab && part_die->name != NULL) | |
5522 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5523 | VAR_DOMAIN, LOC_TYPEDEF, | |
5524 | &cu->objfile->static_psymbols, | |
5525 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5526 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5527 | continue; | |
5528 | } | |
5529 | ||
5530 | /* If we're at the second level, and we're an enumerator, and | |
5531 | our parent has no specification (meaning possibly lives in a | |
5532 | namespace elsewhere), then we can add the partial symbol now | |
5533 | instead of queueing it. */ | |
5534 | if (part_die->tag == DW_TAG_enumerator | |
5535 | && parent_die != NULL | |
5536 | && parent_die->die_parent == NULL | |
5537 | && parent_die->tag == DW_TAG_enumeration_type | |
5538 | && parent_die->has_specification == 0) | |
5539 | { | |
5540 | if (part_die->name == NULL) | |
e2e0b3e5 | 5541 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 DJ |
5542 | else if (building_psymtab) |
5543 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5544 | VAR_DOMAIN, LOC_CONST, | |
987504bb JJ |
5545 | (cu->language == language_cplus |
5546 | || cu->language == language_java) | |
72bf9492 DJ |
5547 | ? &cu->objfile->global_psymbols |
5548 | : &cu->objfile->static_psymbols, | |
5549 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5550 | ||
5551 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5552 | continue; | |
5553 | } | |
5554 | ||
5555 | /* We'll save this DIE so link it in. */ | |
5556 | part_die->die_parent = parent_die; | |
5557 | part_die->die_sibling = NULL; | |
5558 | part_die->die_child = NULL; | |
5559 | ||
5560 | if (last_die && last_die == parent_die) | |
5561 | last_die->die_child = part_die; | |
5562 | else if (last_die) | |
5563 | last_die->die_sibling = part_die; | |
5564 | ||
5565 | last_die = part_die; | |
5566 | ||
5567 | if (first_die == NULL) | |
5568 | first_die = part_die; | |
5569 | ||
5570 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
5571 | find interesting need to be in the hash table, because we | |
5572 | also have the parent/sibling/child chains; only those that we | |
5573 | might refer to by offset later during partial symbol reading. | |
5574 | ||
5575 | For now this means things that might have be the target of a | |
5576 | DW_AT_specification, DW_AT_abstract_origin, or | |
5577 | DW_AT_extension. DW_AT_extension will refer only to | |
5578 | namespaces; DW_AT_abstract_origin refers to functions (and | |
5579 | many things under the function DIE, but we do not recurse | |
5580 | into function DIEs during partial symbol reading) and | |
5581 | possibly variables as well; DW_AT_specification refers to | |
5582 | declarations. Declarations ought to have the DW_AT_declaration | |
5583 | flag. It happens that GCC forgets to put it in sometimes, but | |
5584 | only for functions, not for types. | |
5585 | ||
5586 | Adding more things than necessary to the hash table is harmless | |
5587 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
5588 | wasted time in find_partial_die, when we reread the compilation |
5589 | unit with load_all_dies set. */ | |
72bf9492 | 5590 | |
5afb4e99 DJ |
5591 | if (load_all |
5592 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
5593 | || abbrev->tag == DW_TAG_variable |
5594 | || abbrev->tag == DW_TAG_namespace | |
5595 | || part_die->is_declaration) | |
5596 | { | |
5597 | void **slot; | |
5598 | ||
5599 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
5600 | part_die->offset, INSERT); | |
5601 | *slot = part_die; | |
5602 | } | |
5603 | ||
5604 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5605 | sizeof (struct partial_die_info)); | |
5606 | ||
5607 | /* For some DIEs we want to follow their children (if any). For C | |
5608 | we have no reason to follow the children of structures; for other | |
5609 | languages we have to, both so that we can get at method physnames | |
5610 | to infer fully qualified class names, and for DW_AT_specification. */ | |
5611 | if (last_die->has_children | |
5afb4e99 DJ |
5612 | && (load_all |
5613 | || last_die->tag == DW_TAG_namespace | |
72bf9492 DJ |
5614 | || last_die->tag == DW_TAG_enumeration_type |
5615 | || (cu->language != language_c | |
5616 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 5617 | || last_die->tag == DW_TAG_interface_type |
72bf9492 DJ |
5618 | || last_die->tag == DW_TAG_structure_type |
5619 | || last_die->tag == DW_TAG_union_type)))) | |
5620 | { | |
5621 | nesting_level++; | |
5622 | parent_die = last_die; | |
5623 | continue; | |
5624 | } | |
5625 | ||
5626 | /* Otherwise we skip to the next sibling, if any. */ | |
5627 | info_ptr = locate_pdi_sibling (last_die, info_ptr, abfd, cu); | |
5628 | ||
5629 | /* Back to the top, do it again. */ | |
5630 | } | |
5631 | } | |
5632 | ||
c906108c SS |
5633 | /* Read a minimal amount of information into the minimal die structure. */ |
5634 | ||
fe1b8b76 | 5635 | static gdb_byte * |
72bf9492 DJ |
5636 | read_partial_die (struct partial_die_info *part_die, |
5637 | struct abbrev_info *abbrev, | |
5638 | unsigned int abbrev_len, bfd *abfd, | |
fe1b8b76 | 5639 | gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 5640 | { |
72bf9492 | 5641 | unsigned int bytes_read, i; |
c906108c | 5642 | struct attribute attr; |
c5aa993b | 5643 | int has_low_pc_attr = 0; |
c906108c SS |
5644 | int has_high_pc_attr = 0; |
5645 | ||
72bf9492 | 5646 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 5647 | |
6502dd73 | 5648 | part_die->offset = info_ptr - dwarf2_per_objfile->info_buffer; |
72bf9492 DJ |
5649 | |
5650 | info_ptr += abbrev_len; | |
5651 | ||
5652 | if (abbrev == NULL) | |
5653 | return info_ptr; | |
5654 | ||
c906108c SS |
5655 | part_die->tag = abbrev->tag; |
5656 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
5657 | |
5658 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5659 | { | |
e7c27a73 | 5660 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
5661 | |
5662 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 5663 | partial symbol table. */ |
c906108c SS |
5664 | switch (attr.name) |
5665 | { | |
5666 | case DW_AT_name: | |
5667 | ||
5668 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
5669 | if (part_die->name == NULL) | |
5670 | part_die->name = DW_STRING (&attr); | |
5671 | break; | |
57c22c6c BR |
5672 | case DW_AT_comp_dir: |
5673 | if (part_die->dirname == NULL) | |
5674 | part_die->dirname = DW_STRING (&attr); | |
5675 | break; | |
c906108c SS |
5676 | case DW_AT_MIPS_linkage_name: |
5677 | part_die->name = DW_STRING (&attr); | |
5678 | break; | |
5679 | case DW_AT_low_pc: | |
5680 | has_low_pc_attr = 1; | |
5681 | part_die->lowpc = DW_ADDR (&attr); | |
5682 | break; | |
5683 | case DW_AT_high_pc: | |
5684 | has_high_pc_attr = 1; | |
5685 | part_die->highpc = DW_ADDR (&attr); | |
5686 | break; | |
43039443 JK |
5687 | case DW_AT_ranges: |
5688 | if (dwarf2_ranges_read (DW_UNSND (&attr), &part_die->lowpc, | |
5689 | &part_die->highpc, cu)) | |
5690 | has_low_pc_attr = has_high_pc_attr = 1; | |
5691 | break; | |
c906108c | 5692 | case DW_AT_location: |
8e19ed76 PS |
5693 | /* Support the .debug_loc offsets */ |
5694 | if (attr_form_is_block (&attr)) | |
5695 | { | |
5696 | part_die->locdesc = DW_BLOCK (&attr); | |
5697 | } | |
3690dd37 | 5698 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 5699 | { |
4d3c2250 | 5700 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5701 | } |
5702 | else | |
5703 | { | |
4d3c2250 KB |
5704 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
5705 | "partial symbol information"); | |
8e19ed76 | 5706 | } |
c906108c SS |
5707 | break; |
5708 | case DW_AT_language: | |
5709 | part_die->language = DW_UNSND (&attr); | |
5710 | break; | |
5711 | case DW_AT_external: | |
5712 | part_die->is_external = DW_UNSND (&attr); | |
5713 | break; | |
5714 | case DW_AT_declaration: | |
5715 | part_die->is_declaration = DW_UNSND (&attr); | |
5716 | break; | |
5717 | case DW_AT_type: | |
5718 | part_die->has_type = 1; | |
5719 | break; | |
5720 | case DW_AT_abstract_origin: | |
5721 | case DW_AT_specification: | |
72bf9492 DJ |
5722 | case DW_AT_extension: |
5723 | part_die->has_specification = 1; | |
5724 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c SS |
5725 | break; |
5726 | case DW_AT_sibling: | |
5727 | /* Ignore absolute siblings, they might point outside of | |
5728 | the current compile unit. */ | |
5729 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 5730 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 5731 | else |
6502dd73 DJ |
5732 | part_die->sibling = dwarf2_per_objfile->info_buffer |
5733 | + dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c | 5734 | break; |
aaa75496 JB |
5735 | case DW_AT_stmt_list: |
5736 | part_die->has_stmt_list = 1; | |
5737 | part_die->line_offset = DW_UNSND (&attr); | |
5738 | break; | |
fa4028e9 JB |
5739 | case DW_AT_byte_size: |
5740 | part_die->has_byte_size = 1; | |
5741 | break; | |
68511cec CES |
5742 | case DW_AT_calling_convention: |
5743 | /* DWARF doesn't provide a way to identify a program's source-level | |
5744 | entry point. DW_AT_calling_convention attributes are only meant | |
5745 | to describe functions' calling conventions. | |
5746 | ||
5747 | However, because it's a necessary piece of information in | |
5748 | Fortran, and because DW_CC_program is the only piece of debugging | |
5749 | information whose definition refers to a 'main program' at all, | |
5750 | several compilers have begun marking Fortran main programs with | |
5751 | DW_CC_program --- even when those functions use the standard | |
5752 | calling conventions. | |
5753 | ||
5754 | So until DWARF specifies a way to provide this information and | |
5755 | compilers pick up the new representation, we'll support this | |
5756 | practice. */ | |
5757 | if (DW_UNSND (&attr) == DW_CC_program | |
5758 | && cu->language == language_fortran) | |
5759 | set_main_name (part_die->name); | |
5760 | break; | |
c906108c SS |
5761 | default: |
5762 | break; | |
5763 | } | |
5764 | } | |
5765 | ||
c906108c SS |
5766 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
5767 | eliminate duplicate copies of functions and vtables and such. | |
5768 | The linker will arbitrarily choose one and discard the others. | |
5769 | The AT_*_pc values for such functions refer to local labels in | |
5770 | these sections. If the section from that file was discarded, the | |
5771 | labels are not in the output, so the relocs get a value of 0. | |
5772 | If this is a discarded function, mark the pc bounds as invalid, | |
5773 | so that GDB will ignore it. */ | |
5774 | if (has_low_pc_attr && has_high_pc_attr | |
5775 | && part_die->lowpc < part_die->highpc | |
5776 | && (part_die->lowpc != 0 | |
72dca2f5 | 5777 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 5778 | part_die->has_pc_info = 1; |
c906108c SS |
5779 | return info_ptr; |
5780 | } | |
5781 | ||
72bf9492 DJ |
5782 | /* Find a cached partial DIE at OFFSET in CU. */ |
5783 | ||
5784 | static struct partial_die_info * | |
5785 | find_partial_die_in_comp_unit (unsigned long offset, struct dwarf2_cu *cu) | |
5786 | { | |
5787 | struct partial_die_info *lookup_die = NULL; | |
5788 | struct partial_die_info part_die; | |
5789 | ||
5790 | part_die.offset = offset; | |
5791 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
5792 | ||
72bf9492 DJ |
5793 | return lookup_die; |
5794 | } | |
5795 | ||
5796 | /* Find a partial DIE at OFFSET, which may or may not be in CU. */ | |
5797 | ||
5798 | static struct partial_die_info * | |
10b3939b | 5799 | find_partial_die (unsigned long offset, struct dwarf2_cu *cu) |
72bf9492 | 5800 | { |
5afb4e99 DJ |
5801 | struct dwarf2_per_cu_data *per_cu = NULL; |
5802 | struct partial_die_info *pd = NULL; | |
72bf9492 DJ |
5803 | |
5804 | if (offset >= cu->header.offset | |
5805 | && offset < cu->header.offset + cu->header.length) | |
5afb4e99 DJ |
5806 | { |
5807 | pd = find_partial_die_in_comp_unit (offset, cu); | |
5808 | if (pd != NULL) | |
5809 | return pd; | |
5810 | } | |
72bf9492 | 5811 | |
ae038cb0 DJ |
5812 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
5813 | ||
ae038cb0 DJ |
5814 | if (per_cu->cu == NULL) |
5815 | { | |
5816 | load_comp_unit (per_cu, cu->objfile); | |
5817 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5818 | dwarf2_per_objfile->read_in_chain = per_cu; | |
5819 | } | |
5820 | ||
5821 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
5822 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
5823 | ||
5824 | if (pd == NULL && per_cu->load_all_dies == 0) | |
5825 | { | |
5826 | struct cleanup *back_to; | |
5827 | struct partial_die_info comp_unit_die; | |
5828 | struct abbrev_info *abbrev; | |
5829 | unsigned int bytes_read; | |
5830 | char *info_ptr; | |
5831 | ||
5832 | per_cu->load_all_dies = 1; | |
5833 | ||
5834 | /* Re-read the DIEs. */ | |
5835 | back_to = make_cleanup (null_cleanup, 0); | |
5836 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
5837 | { | |
5838 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
5839 | back_to = make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); | |
5840 | } | |
5841 | info_ptr = per_cu->cu->header.first_die_ptr; | |
5842 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); | |
5843 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
5844 | per_cu->cu->objfile->obfd, info_ptr, | |
5845 | per_cu->cu); | |
5846 | if (comp_unit_die.has_children) | |
5847 | load_partial_dies (per_cu->cu->objfile->obfd, info_ptr, 0, per_cu->cu); | |
5848 | do_cleanups (back_to); | |
5849 | ||
5850 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
5851 | } | |
5852 | ||
5853 | if (pd == NULL) | |
5854 | internal_error (__FILE__, __LINE__, | |
5855 | _("could not find partial DIE 0x%lx in cache [from module %s]\n"), | |
5856 | offset, bfd_get_filename (cu->objfile->obfd)); | |
5857 | return pd; | |
72bf9492 DJ |
5858 | } |
5859 | ||
5860 | /* Adjust PART_DIE before generating a symbol for it. This function | |
5861 | may set the is_external flag or change the DIE's name. */ | |
5862 | ||
5863 | static void | |
5864 | fixup_partial_die (struct partial_die_info *part_die, | |
5865 | struct dwarf2_cu *cu) | |
5866 | { | |
5867 | /* If we found a reference attribute and the DIE has no name, try | |
5868 | to find a name in the referred to DIE. */ | |
5869 | ||
5870 | if (part_die->name == NULL && part_die->has_specification) | |
5871 | { | |
5872 | struct partial_die_info *spec_die; | |
72bf9492 | 5873 | |
10b3939b | 5874 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 5875 | |
10b3939b | 5876 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
5877 | |
5878 | if (spec_die->name) | |
5879 | { | |
5880 | part_die->name = spec_die->name; | |
5881 | ||
5882 | /* Copy DW_AT_external attribute if it is set. */ | |
5883 | if (spec_die->is_external) | |
5884 | part_die->is_external = spec_die->is_external; | |
5885 | } | |
5886 | } | |
5887 | ||
5888 | /* Set default names for some unnamed DIEs. */ | |
5889 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
5890 | || part_die->tag == DW_TAG_class_type)) | |
5891 | part_die->name = "(anonymous class)"; | |
5892 | ||
5893 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
5894 | part_die->name = "(anonymous namespace)"; | |
5895 | ||
5896 | if (part_die->tag == DW_TAG_structure_type | |
5897 | || part_die->tag == DW_TAG_class_type | |
5898 | || part_die->tag == DW_TAG_union_type) | |
5899 | guess_structure_name (part_die, cu); | |
5900 | } | |
5901 | ||
639d11d3 DC |
5902 | /* Read the die from the .debug_info section buffer. Set DIEP to |
5903 | point to a newly allocated die with its information, except for its | |
5904 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
5905 | whether the die has children or not. */ | |
c906108c | 5906 | |
fe1b8b76 JB |
5907 | static gdb_byte * |
5908 | read_full_die (struct die_info **diep, bfd *abfd, gdb_byte *info_ptr, | |
e7c27a73 | 5909 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
5910 | { |
5911 | unsigned int abbrev_number, bytes_read, i, offset; | |
5912 | struct abbrev_info *abbrev; | |
5913 | struct die_info *die; | |
5914 | ||
6502dd73 | 5915 | offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
5916 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5917 | info_ptr += bytes_read; | |
5918 | if (!abbrev_number) | |
5919 | { | |
5920 | die = dwarf_alloc_die (); | |
5921 | die->tag = 0; | |
5922 | die->abbrev = abbrev_number; | |
5923 | die->type = NULL; | |
5924 | *diep = die; | |
639d11d3 | 5925 | *has_children = 0; |
c906108c SS |
5926 | return info_ptr; |
5927 | } | |
5928 | ||
e7c27a73 | 5929 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
5930 | if (!abbrev) |
5931 | { | |
8a3fe4f8 | 5932 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
72bf9492 | 5933 | abbrev_number, |
639d11d3 | 5934 | bfd_get_filename (abfd)); |
c906108c SS |
5935 | } |
5936 | die = dwarf_alloc_die (); | |
5937 | die->offset = offset; | |
5938 | die->tag = abbrev->tag; | |
c906108c SS |
5939 | die->abbrev = abbrev_number; |
5940 | die->type = NULL; | |
5941 | ||
5942 | die->num_attrs = abbrev->num_attrs; | |
5943 | die->attrs = (struct attribute *) | |
5944 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
5945 | ||
5946 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5947 | { | |
5948 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 5949 | abfd, info_ptr, cu); |
10b3939b DJ |
5950 | |
5951 | /* If this attribute is an absolute reference to a different | |
5952 | compilation unit, make sure that compilation unit is loaded | |
5953 | also. */ | |
5954 | if (die->attrs[i].form == DW_FORM_ref_addr | |
5955 | && (DW_ADDR (&die->attrs[i]) < cu->header.offset | |
5956 | || (DW_ADDR (&die->attrs[i]) | |
5957 | >= cu->header.offset + cu->header.length))) | |
5958 | { | |
5959 | struct dwarf2_per_cu_data *per_cu; | |
5960 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (&die->attrs[i]), | |
5961 | cu->objfile); | |
5962 | ||
5963 | /* Mark the dependence relation so that we don't flush PER_CU | |
5964 | too early. */ | |
5965 | dwarf2_add_dependence (cu, per_cu); | |
5966 | ||
5967 | /* If it's already on the queue, we have nothing to do. */ | |
5968 | if (per_cu->queued) | |
5969 | continue; | |
5970 | ||
5971 | /* If the compilation unit is already loaded, just mark it as | |
5972 | used. */ | |
5973 | if (per_cu->cu != NULL) | |
5974 | { | |
5975 | per_cu->cu->last_used = 0; | |
5976 | continue; | |
5977 | } | |
5978 | ||
5979 | /* Add it to the queue. */ | |
5980 | queue_comp_unit (per_cu); | |
5981 | } | |
c906108c SS |
5982 | } |
5983 | ||
5984 | *diep = die; | |
639d11d3 | 5985 | *has_children = abbrev->has_children; |
c906108c SS |
5986 | return info_ptr; |
5987 | } | |
5988 | ||
a8329558 | 5989 | /* Read an attribute value described by an attribute form. */ |
c906108c | 5990 | |
fe1b8b76 | 5991 | static gdb_byte * |
a8329558 | 5992 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 5993 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 5994 | struct dwarf2_cu *cu) |
c906108c | 5995 | { |
e7c27a73 | 5996 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5997 | unsigned int bytes_read; |
5998 | struct dwarf_block *blk; | |
5999 | ||
a8329558 KW |
6000 | attr->form = form; |
6001 | switch (form) | |
c906108c SS |
6002 | { |
6003 | case DW_FORM_addr: | |
6004 | case DW_FORM_ref_addr: | |
e7c27a73 | 6005 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 6006 | info_ptr += bytes_read; |
c906108c SS |
6007 | break; |
6008 | case DW_FORM_block2: | |
7b5a2f43 | 6009 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6010 | blk->size = read_2_bytes (abfd, info_ptr); |
6011 | info_ptr += 2; | |
6012 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6013 | info_ptr += blk->size; | |
6014 | DW_BLOCK (attr) = blk; | |
6015 | break; | |
6016 | case DW_FORM_block4: | |
7b5a2f43 | 6017 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6018 | blk->size = read_4_bytes (abfd, info_ptr); |
6019 | info_ptr += 4; | |
6020 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6021 | info_ptr += blk->size; | |
6022 | DW_BLOCK (attr) = blk; | |
6023 | break; | |
6024 | case DW_FORM_data2: | |
6025 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
6026 | info_ptr += 2; | |
6027 | break; | |
6028 | case DW_FORM_data4: | |
6029 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
6030 | info_ptr += 4; | |
6031 | break; | |
6032 | case DW_FORM_data8: | |
6033 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
6034 | info_ptr += 8; | |
6035 | break; | |
6036 | case DW_FORM_string: | |
6037 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
6038 | info_ptr += bytes_read; | |
6039 | break; | |
4bdf3d34 JJ |
6040 | case DW_FORM_strp: |
6041 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
6042 | &bytes_read); | |
6043 | info_ptr += bytes_read; | |
6044 | break; | |
c906108c | 6045 | case DW_FORM_block: |
7b5a2f43 | 6046 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6047 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6048 | info_ptr += bytes_read; | |
6049 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6050 | info_ptr += blk->size; | |
6051 | DW_BLOCK (attr) = blk; | |
6052 | break; | |
6053 | case DW_FORM_block1: | |
7b5a2f43 | 6054 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6055 | blk->size = read_1_byte (abfd, info_ptr); |
6056 | info_ptr += 1; | |
6057 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6058 | info_ptr += blk->size; | |
6059 | DW_BLOCK (attr) = blk; | |
6060 | break; | |
6061 | case DW_FORM_data1: | |
6062 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
6063 | info_ptr += 1; | |
6064 | break; | |
6065 | case DW_FORM_flag: | |
6066 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
6067 | info_ptr += 1; | |
6068 | break; | |
6069 | case DW_FORM_sdata: | |
6070 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
6071 | info_ptr += bytes_read; | |
6072 | break; | |
6073 | case DW_FORM_udata: | |
6074 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6075 | info_ptr += bytes_read; | |
6076 | break; | |
6077 | case DW_FORM_ref1: | |
10b3939b | 6078 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
6079 | info_ptr += 1; |
6080 | break; | |
6081 | case DW_FORM_ref2: | |
10b3939b | 6082 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
6083 | info_ptr += 2; |
6084 | break; | |
6085 | case DW_FORM_ref4: | |
10b3939b | 6086 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
6087 | info_ptr += 4; |
6088 | break; | |
613e1657 | 6089 | case DW_FORM_ref8: |
10b3939b | 6090 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
6091 | info_ptr += 8; |
6092 | break; | |
c906108c | 6093 | case DW_FORM_ref_udata: |
10b3939b DJ |
6094 | DW_ADDR (attr) = (cu->header.offset |
6095 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
6096 | info_ptr += bytes_read; |
6097 | break; | |
c906108c | 6098 | case DW_FORM_indirect: |
a8329558 KW |
6099 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6100 | info_ptr += bytes_read; | |
e7c27a73 | 6101 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 6102 | break; |
c906108c | 6103 | default: |
8a3fe4f8 | 6104 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
6105 | dwarf_form_name (form), |
6106 | bfd_get_filename (abfd)); | |
c906108c SS |
6107 | } |
6108 | return info_ptr; | |
6109 | } | |
6110 | ||
a8329558 KW |
6111 | /* Read an attribute described by an abbreviated attribute. */ |
6112 | ||
fe1b8b76 | 6113 | static gdb_byte * |
a8329558 | 6114 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 6115 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
6116 | { |
6117 | attr->name = abbrev->name; | |
e7c27a73 | 6118 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
6119 | } |
6120 | ||
c906108c SS |
6121 | /* read dwarf information from a buffer */ |
6122 | ||
6123 | static unsigned int | |
fe1b8b76 | 6124 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 6125 | { |
fe1b8b76 | 6126 | return bfd_get_8 (abfd, buf); |
c906108c SS |
6127 | } |
6128 | ||
6129 | static int | |
fe1b8b76 | 6130 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 6131 | { |
fe1b8b76 | 6132 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
6133 | } |
6134 | ||
6135 | static unsigned int | |
fe1b8b76 | 6136 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6137 | { |
fe1b8b76 | 6138 | return bfd_get_16 (abfd, buf); |
c906108c SS |
6139 | } |
6140 | ||
6141 | static int | |
fe1b8b76 | 6142 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6143 | { |
fe1b8b76 | 6144 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
6145 | } |
6146 | ||
6147 | static unsigned int | |
fe1b8b76 | 6148 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6149 | { |
fe1b8b76 | 6150 | return bfd_get_32 (abfd, buf); |
c906108c SS |
6151 | } |
6152 | ||
6153 | static int | |
fe1b8b76 | 6154 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6155 | { |
fe1b8b76 | 6156 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
6157 | } |
6158 | ||
ce5d95e1 | 6159 | static unsigned long |
fe1b8b76 | 6160 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6161 | { |
fe1b8b76 | 6162 | return bfd_get_64 (abfd, buf); |
c906108c SS |
6163 | } |
6164 | ||
6165 | static CORE_ADDR | |
fe1b8b76 | 6166 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 6167 | unsigned int *bytes_read) |
c906108c | 6168 | { |
e7c27a73 | 6169 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
6170 | CORE_ADDR retval = 0; |
6171 | ||
107d2387 | 6172 | if (cu_header->signed_addr_p) |
c906108c | 6173 | { |
107d2387 AC |
6174 | switch (cu_header->addr_size) |
6175 | { | |
6176 | case 2: | |
fe1b8b76 | 6177 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
6178 | break; |
6179 | case 4: | |
fe1b8b76 | 6180 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
6181 | break; |
6182 | case 8: | |
fe1b8b76 | 6183 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
6184 | break; |
6185 | default: | |
8e65ff28 | 6186 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6187 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 6188 | bfd_get_filename (abfd)); |
107d2387 AC |
6189 | } |
6190 | } | |
6191 | else | |
6192 | { | |
6193 | switch (cu_header->addr_size) | |
6194 | { | |
6195 | case 2: | |
fe1b8b76 | 6196 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
6197 | break; |
6198 | case 4: | |
fe1b8b76 | 6199 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
6200 | break; |
6201 | case 8: | |
fe1b8b76 | 6202 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
6203 | break; |
6204 | default: | |
8e65ff28 | 6205 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6206 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 6207 | bfd_get_filename (abfd)); |
107d2387 | 6208 | } |
c906108c | 6209 | } |
64367e0a | 6210 | |
107d2387 AC |
6211 | *bytes_read = cu_header->addr_size; |
6212 | return retval; | |
c906108c SS |
6213 | } |
6214 | ||
f7ef9339 | 6215 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
6216 | specification allows the initial length to take up either 4 bytes |
6217 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
6218 | bytes describe the length and all offsets will be 8 bytes in length | |
6219 | instead of 4. | |
6220 | ||
f7ef9339 KB |
6221 | An older, non-standard 64-bit format is also handled by this |
6222 | function. The older format in question stores the initial length | |
6223 | as an 8-byte quantity without an escape value. Lengths greater | |
6224 | than 2^32 aren't very common which means that the initial 4 bytes | |
6225 | is almost always zero. Since a length value of zero doesn't make | |
6226 | sense for the 32-bit format, this initial zero can be considered to | |
6227 | be an escape value which indicates the presence of the older 64-bit | |
6228 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
6229 | greater than 4GB. If it becomes necessary to handle lengths |
6230 | somewhat larger than 4GB, we could allow other small values (such | |
6231 | as the non-sensical values of 1, 2, and 3) to also be used as | |
6232 | escape values indicating the presence of the old format. | |
f7ef9339 | 6233 | |
917c78fc MK |
6234 | The value returned via bytes_read should be used to increment the |
6235 | relevant pointer after calling read_initial_length(). | |
613e1657 KB |
6236 | |
6237 | As a side effect, this function sets the fields initial_length_size | |
6238 | and offset_size in cu_header to the values appropriate for the | |
6239 | length field. (The format of the initial length field determines | |
dd373385 | 6240 | the width of file offsets to be fetched later with read_offset().) |
613e1657 KB |
6241 | |
6242 | [ Note: read_initial_length() and read_offset() are based on the | |
6243 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 6244 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
6245 | from: |
6246 | ||
f7ef9339 | 6247 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
6248 | |
6249 | This document is only a draft and is subject to change. (So beware.) | |
6250 | ||
f7ef9339 | 6251 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
6252 | determined empirically by examining 64-bit ELF files produced by |
6253 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
6254 | |
6255 | - Kevin, July 16, 2002 | |
613e1657 KB |
6256 | ] */ |
6257 | ||
6258 | static LONGEST | |
fe1b8b76 | 6259 | read_initial_length (bfd *abfd, gdb_byte *buf, struct comp_unit_head *cu_header, |
891d2f0b | 6260 | unsigned int *bytes_read) |
613e1657 | 6261 | { |
fe1b8b76 | 6262 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 6263 | |
dd373385 | 6264 | if (length == 0xffffffff) |
613e1657 | 6265 | { |
fe1b8b76 | 6266 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 6267 | *bytes_read = 12; |
613e1657 | 6268 | } |
dd373385 | 6269 | else if (length == 0) |
f7ef9339 | 6270 | { |
dd373385 | 6271 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 6272 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 6273 | *bytes_read = 8; |
f7ef9339 | 6274 | } |
613e1657 KB |
6275 | else |
6276 | { | |
6277 | *bytes_read = 4; | |
613e1657 KB |
6278 | } |
6279 | ||
dd373385 EZ |
6280 | if (cu_header) |
6281 | { | |
6282 | gdb_assert (cu_header->initial_length_size == 0 | |
6283 | || cu_header->initial_length_size == 4 | |
6284 | || cu_header->initial_length_size == 8 | |
6285 | || cu_header->initial_length_size == 12); | |
6286 | ||
6287 | if (cu_header->initial_length_size != 0 | |
6288 | && cu_header->initial_length_size != *bytes_read) | |
6289 | complaint (&symfile_complaints, | |
6290 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
6291 | ||
6292 | cu_header->initial_length_size = *bytes_read; | |
6293 | cu_header->offset_size = (*bytes_read == 4) ? 4 : 8; | |
6294 | } | |
6295 | ||
6296 | return length; | |
613e1657 KB |
6297 | } |
6298 | ||
6299 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 6300 | given by cu_header->offset_size. */ |
613e1657 KB |
6301 | |
6302 | static LONGEST | |
fe1b8b76 | 6303 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 6304 | unsigned int *bytes_read) |
613e1657 KB |
6305 | { |
6306 | LONGEST retval = 0; | |
6307 | ||
6308 | switch (cu_header->offset_size) | |
6309 | { | |
6310 | case 4: | |
fe1b8b76 | 6311 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
6312 | *bytes_read = 4; |
6313 | break; | |
6314 | case 8: | |
fe1b8b76 | 6315 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
6316 | *bytes_read = 8; |
6317 | break; | |
6318 | default: | |
8e65ff28 | 6319 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6320 | _("read_offset: bad switch [in module %s]"), |
659b0389 | 6321 | bfd_get_filename (abfd)); |
613e1657 KB |
6322 | } |
6323 | ||
917c78fc | 6324 | return retval; |
613e1657 KB |
6325 | } |
6326 | ||
fe1b8b76 JB |
6327 | static gdb_byte * |
6328 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
6329 | { |
6330 | /* If the size of a host char is 8 bits, we can return a pointer | |
6331 | to the buffer, otherwise we have to copy the data to a buffer | |
6332 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6333 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 6334 | return buf; |
c906108c SS |
6335 | } |
6336 | ||
6337 | static char * | |
fe1b8b76 | 6338 | read_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
6339 | { |
6340 | /* If the size of a host char is 8 bits, we can return a pointer | |
6341 | to the string, otherwise we have to copy the string to a buffer | |
6342 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6343 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
6344 | if (*buf == '\0') |
6345 | { | |
6346 | *bytes_read_ptr = 1; | |
6347 | return NULL; | |
6348 | } | |
fe1b8b76 JB |
6349 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
6350 | return (char *) buf; | |
4bdf3d34 JJ |
6351 | } |
6352 | ||
6353 | static char * | |
fe1b8b76 | 6354 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
6355 | const struct comp_unit_head *cu_header, |
6356 | unsigned int *bytes_read_ptr) | |
6357 | { | |
6358 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
891d2f0b | 6359 | bytes_read_ptr); |
c906108c | 6360 | |
6502dd73 | 6361 | if (dwarf2_per_objfile->str_buffer == NULL) |
c906108c | 6362 | { |
8a3fe4f8 | 6363 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 6364 | bfd_get_filename (abfd)); |
4bdf3d34 | 6365 | return NULL; |
c906108c | 6366 | } |
6502dd73 | 6367 | if (str_offset >= dwarf2_per_objfile->str_size) |
c906108c | 6368 | { |
8a3fe4f8 | 6369 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 6370 | bfd_get_filename (abfd)); |
c906108c SS |
6371 | return NULL; |
6372 | } | |
4bdf3d34 | 6373 | gdb_assert (HOST_CHAR_BIT == 8); |
6502dd73 | 6374 | if (dwarf2_per_objfile->str_buffer[str_offset] == '\0') |
4bdf3d34 | 6375 | return NULL; |
fe1b8b76 | 6376 | return (char *) (dwarf2_per_objfile->str_buffer + str_offset); |
c906108c SS |
6377 | } |
6378 | ||
ce5d95e1 | 6379 | static unsigned long |
fe1b8b76 | 6380 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6381 | { |
ce5d95e1 JB |
6382 | unsigned long result; |
6383 | unsigned int num_read; | |
c906108c SS |
6384 | int i, shift; |
6385 | unsigned char byte; | |
6386 | ||
6387 | result = 0; | |
6388 | shift = 0; | |
6389 | num_read = 0; | |
6390 | i = 0; | |
6391 | while (1) | |
6392 | { | |
fe1b8b76 | 6393 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6394 | buf++; |
6395 | num_read++; | |
ce5d95e1 | 6396 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
6397 | if ((byte & 128) == 0) |
6398 | { | |
6399 | break; | |
6400 | } | |
6401 | shift += 7; | |
6402 | } | |
6403 | *bytes_read_ptr = num_read; | |
6404 | return result; | |
6405 | } | |
6406 | ||
ce5d95e1 | 6407 | static long |
fe1b8b76 | 6408 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6409 | { |
ce5d95e1 | 6410 | long result; |
77e0b926 | 6411 | int i, shift, num_read; |
c906108c SS |
6412 | unsigned char byte; |
6413 | ||
6414 | result = 0; | |
6415 | shift = 0; | |
c906108c SS |
6416 | num_read = 0; |
6417 | i = 0; | |
6418 | while (1) | |
6419 | { | |
fe1b8b76 | 6420 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6421 | buf++; |
6422 | num_read++; | |
ce5d95e1 | 6423 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
6424 | shift += 7; |
6425 | if ((byte & 128) == 0) | |
6426 | { | |
6427 | break; | |
6428 | } | |
6429 | } | |
77e0b926 DJ |
6430 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
6431 | result |= -(((long)1) << shift); | |
c906108c SS |
6432 | *bytes_read_ptr = num_read; |
6433 | return result; | |
6434 | } | |
6435 | ||
4bb7a0a7 DJ |
6436 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
6437 | ||
fe1b8b76 JB |
6438 | static gdb_byte * |
6439 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
6440 | { |
6441 | int byte; | |
6442 | ||
6443 | while (1) | |
6444 | { | |
fe1b8b76 | 6445 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
6446 | buf++; |
6447 | if ((byte & 128) == 0) | |
6448 | return buf; | |
6449 | } | |
6450 | } | |
6451 | ||
c906108c | 6452 | static void |
e142c38c | 6453 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
6454 | { |
6455 | switch (lang) | |
6456 | { | |
6457 | case DW_LANG_C89: | |
6458 | case DW_LANG_C: | |
e142c38c | 6459 | cu->language = language_c; |
c906108c SS |
6460 | break; |
6461 | case DW_LANG_C_plus_plus: | |
e142c38c | 6462 | cu->language = language_cplus; |
c906108c SS |
6463 | break; |
6464 | case DW_LANG_Fortran77: | |
6465 | case DW_LANG_Fortran90: | |
b21b22e0 | 6466 | case DW_LANG_Fortran95: |
e142c38c | 6467 | cu->language = language_fortran; |
c906108c SS |
6468 | break; |
6469 | case DW_LANG_Mips_Assembler: | |
e142c38c | 6470 | cu->language = language_asm; |
c906108c | 6471 | break; |
bebd888e | 6472 | case DW_LANG_Java: |
e142c38c | 6473 | cu->language = language_java; |
bebd888e | 6474 | break; |
c906108c | 6475 | case DW_LANG_Ada83: |
8aaf0b47 | 6476 | case DW_LANG_Ada95: |
bc5f45f8 JB |
6477 | cu->language = language_ada; |
6478 | break; | |
72019c9c GM |
6479 | case DW_LANG_Modula2: |
6480 | cu->language = language_m2; | |
6481 | break; | |
fe8e67fd PM |
6482 | case DW_LANG_Pascal83: |
6483 | cu->language = language_pascal; | |
6484 | break; | |
c906108c SS |
6485 | case DW_LANG_Cobol74: |
6486 | case DW_LANG_Cobol85: | |
c906108c | 6487 | default: |
e142c38c | 6488 | cu->language = language_minimal; |
c906108c SS |
6489 | break; |
6490 | } | |
e142c38c | 6491 | cu->language_defn = language_def (cu->language); |
c906108c SS |
6492 | } |
6493 | ||
6494 | /* Return the named attribute or NULL if not there. */ | |
6495 | ||
6496 | static struct attribute * | |
e142c38c | 6497 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
6498 | { |
6499 | unsigned int i; | |
6500 | struct attribute *spec = NULL; | |
6501 | ||
6502 | for (i = 0; i < die->num_attrs; ++i) | |
6503 | { | |
6504 | if (die->attrs[i].name == name) | |
10b3939b | 6505 | return &die->attrs[i]; |
c906108c SS |
6506 | if (die->attrs[i].name == DW_AT_specification |
6507 | || die->attrs[i].name == DW_AT_abstract_origin) | |
6508 | spec = &die->attrs[i]; | |
6509 | } | |
c906108c | 6510 | |
10b3939b DJ |
6511 | if (spec) |
6512 | return dwarf2_attr (follow_die_ref (die, spec, cu), name, cu); | |
c5aa993b | 6513 | |
c906108c SS |
6514 | return NULL; |
6515 | } | |
6516 | ||
05cf31d1 JB |
6517 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
6518 | and holds a non-zero value. This function should only be used for | |
6519 | DW_FORM_flag attributes. */ | |
6520 | ||
6521 | static int | |
6522 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
6523 | { | |
6524 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
6525 | ||
6526 | return (attr && DW_UNSND (attr)); | |
6527 | } | |
6528 | ||
3ca72b44 | 6529 | static int |
e142c38c | 6530 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 6531 | { |
05cf31d1 JB |
6532 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
6533 | which value is non-zero. However, we have to be careful with | |
6534 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
6535 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
6536 | end up accidently finding a declaration attribute that belongs | |
6537 | to a different DIE referenced by the specification attribute, | |
6538 | even though the given DIE does not have a declaration attribute. */ | |
6539 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
6540 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
6541 | } |
6542 | ||
63d06c5c DC |
6543 | /* Return the die giving the specification for DIE, if there is |
6544 | one. */ | |
6545 | ||
6546 | static struct die_info * | |
e142c38c | 6547 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 6548 | { |
e142c38c | 6549 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
6550 | |
6551 | if (spec_attr == NULL) | |
6552 | return NULL; | |
6553 | else | |
10b3939b | 6554 | return follow_die_ref (die, spec_attr, cu); |
63d06c5c | 6555 | } |
c906108c | 6556 | |
debd256d JB |
6557 | /* Free the line_header structure *LH, and any arrays and strings it |
6558 | refers to. */ | |
6559 | static void | |
6560 | free_line_header (struct line_header *lh) | |
6561 | { | |
6562 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 6563 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
6564 | |
6565 | /* Remember that all the lh->file_names[i].name pointers are | |
6566 | pointers into debug_line_buffer, and don't need to be freed. */ | |
6567 | if (lh->file_names) | |
a8bc7b56 | 6568 | xfree (lh->file_names); |
debd256d JB |
6569 | |
6570 | /* Similarly for the include directory names. */ | |
6571 | if (lh->include_dirs) | |
a8bc7b56 | 6572 | xfree (lh->include_dirs); |
debd256d | 6573 | |
a8bc7b56 | 6574 | xfree (lh); |
debd256d JB |
6575 | } |
6576 | ||
6577 | ||
6578 | /* Add an entry to LH's include directory table. */ | |
6579 | static void | |
6580 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 6581 | { |
debd256d JB |
6582 | /* Grow the array if necessary. */ |
6583 | if (lh->include_dirs_size == 0) | |
c5aa993b | 6584 | { |
debd256d JB |
6585 | lh->include_dirs_size = 1; /* for testing */ |
6586 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
6587 | * sizeof (*lh->include_dirs)); | |
6588 | } | |
6589 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
6590 | { | |
6591 | lh->include_dirs_size *= 2; | |
6592 | lh->include_dirs = xrealloc (lh->include_dirs, | |
6593 | (lh->include_dirs_size | |
6594 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 6595 | } |
c906108c | 6596 | |
debd256d JB |
6597 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
6598 | } | |
6599 | ||
6600 | ||
6601 | /* Add an entry to LH's file name table. */ | |
6602 | static void | |
6603 | add_file_name (struct line_header *lh, | |
6604 | char *name, | |
6605 | unsigned int dir_index, | |
6606 | unsigned int mod_time, | |
6607 | unsigned int length) | |
6608 | { | |
6609 | struct file_entry *fe; | |
6610 | ||
6611 | /* Grow the array if necessary. */ | |
6612 | if (lh->file_names_size == 0) | |
6613 | { | |
6614 | lh->file_names_size = 1; /* for testing */ | |
6615 | lh->file_names = xmalloc (lh->file_names_size | |
6616 | * sizeof (*lh->file_names)); | |
6617 | } | |
6618 | else if (lh->num_file_names >= lh->file_names_size) | |
6619 | { | |
6620 | lh->file_names_size *= 2; | |
6621 | lh->file_names = xrealloc (lh->file_names, | |
6622 | (lh->file_names_size | |
6623 | * sizeof (*lh->file_names))); | |
6624 | } | |
6625 | ||
6626 | fe = &lh->file_names[lh->num_file_names++]; | |
6627 | fe->name = name; | |
6628 | fe->dir_index = dir_index; | |
6629 | fe->mod_time = mod_time; | |
6630 | fe->length = length; | |
aaa75496 | 6631 | fe->included_p = 0; |
cb1df416 | 6632 | fe->symtab = NULL; |
debd256d JB |
6633 | } |
6634 | ||
6635 | ||
6636 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
6637 | .debug_line, according to the endianness of ABFD. Return a pointer |
6638 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
6639 | |
6640 | NOTE: the strings in the include directory and file name tables of | |
6641 | the returned object point into debug_line_buffer, and must not be | |
6642 | freed. */ | |
6643 | static struct line_header * | |
6644 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 6645 | struct dwarf2_cu *cu) |
debd256d JB |
6646 | { |
6647 | struct cleanup *back_to; | |
6648 | struct line_header *lh; | |
fe1b8b76 | 6649 | gdb_byte *line_ptr; |
891d2f0b | 6650 | unsigned int bytes_read; |
debd256d JB |
6651 | int i; |
6652 | char *cur_dir, *cur_file; | |
6653 | ||
6502dd73 | 6654 | if (dwarf2_per_objfile->line_buffer == NULL) |
debd256d | 6655 | { |
e2e0b3e5 | 6656 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
6657 | return 0; |
6658 | } | |
6659 | ||
a738430d MK |
6660 | /* Make sure that at least there's room for the total_length field. |
6661 | That could be 12 bytes long, but we're just going to fudge that. */ | |
6502dd73 | 6662 | if (offset + 4 >= dwarf2_per_objfile->line_size) |
debd256d | 6663 | { |
4d3c2250 | 6664 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6665 | return 0; |
6666 | } | |
6667 | ||
6668 | lh = xmalloc (sizeof (*lh)); | |
6669 | memset (lh, 0, sizeof (*lh)); | |
6670 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
6671 | (void *) lh); | |
6672 | ||
6502dd73 | 6673 | line_ptr = dwarf2_per_objfile->line_buffer + offset; |
debd256d | 6674 | |
a738430d | 6675 | /* Read in the header. */ |
dd373385 EZ |
6676 | lh->total_length = |
6677 | read_initial_length (abfd, line_ptr, &cu->header, &bytes_read); | |
debd256d | 6678 | line_ptr += bytes_read; |
6502dd73 DJ |
6679 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line_buffer |
6680 | + dwarf2_per_objfile->line_size)) | |
debd256d | 6681 | { |
4d3c2250 | 6682 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6683 | return 0; |
6684 | } | |
6685 | lh->statement_program_end = line_ptr + lh->total_length; | |
6686 | lh->version = read_2_bytes (abfd, line_ptr); | |
6687 | line_ptr += 2; | |
e7c27a73 | 6688 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
6689 | line_ptr += bytes_read; |
6690 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
6691 | line_ptr += 1; | |
6692 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
6693 | line_ptr += 1; | |
6694 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
6695 | line_ptr += 1; | |
6696 | lh->line_range = read_1_byte (abfd, line_ptr); | |
6697 | line_ptr += 1; | |
6698 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
6699 | line_ptr += 1; | |
6700 | lh->standard_opcode_lengths | |
fe1b8b76 | 6701 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
6702 | |
6703 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
6704 | for (i = 1; i < lh->opcode_base; ++i) | |
6705 | { | |
6706 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
6707 | line_ptr += 1; | |
6708 | } | |
6709 | ||
a738430d | 6710 | /* Read directory table. */ |
debd256d JB |
6711 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6712 | { | |
6713 | line_ptr += bytes_read; | |
6714 | add_include_dir (lh, cur_dir); | |
6715 | } | |
6716 | line_ptr += bytes_read; | |
6717 | ||
a738430d | 6718 | /* Read file name table. */ |
debd256d JB |
6719 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6720 | { | |
6721 | unsigned int dir_index, mod_time, length; | |
6722 | ||
6723 | line_ptr += bytes_read; | |
6724 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6725 | line_ptr += bytes_read; | |
6726 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6727 | line_ptr += bytes_read; | |
6728 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6729 | line_ptr += bytes_read; | |
6730 | ||
6731 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6732 | } | |
6733 | line_ptr += bytes_read; | |
6734 | lh->statement_program_start = line_ptr; | |
6735 | ||
6502dd73 DJ |
6736 | if (line_ptr > (dwarf2_per_objfile->line_buffer |
6737 | + dwarf2_per_objfile->line_size)) | |
4d3c2250 | 6738 | complaint (&symfile_complaints, |
e2e0b3e5 | 6739 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
6740 | |
6741 | discard_cleanups (back_to); | |
6742 | return lh; | |
6743 | } | |
c906108c | 6744 | |
5fb290d7 DJ |
6745 | /* This function exists to work around a bug in certain compilers |
6746 | (particularly GCC 2.95), in which the first line number marker of a | |
6747 | function does not show up until after the prologue, right before | |
6748 | the second line number marker. This function shifts ADDRESS down | |
6749 | to the beginning of the function if necessary, and is called on | |
6750 | addresses passed to record_line. */ | |
6751 | ||
6752 | static CORE_ADDR | |
e142c38c | 6753 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
6754 | { |
6755 | struct function_range *fn; | |
6756 | ||
6757 | /* Find the function_range containing address. */ | |
e142c38c | 6758 | if (!cu->first_fn) |
5fb290d7 DJ |
6759 | return address; |
6760 | ||
e142c38c DJ |
6761 | if (!cu->cached_fn) |
6762 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 6763 | |
e142c38c | 6764 | fn = cu->cached_fn; |
5fb290d7 DJ |
6765 | while (fn) |
6766 | if (fn->lowpc <= address && fn->highpc > address) | |
6767 | goto found; | |
6768 | else | |
6769 | fn = fn->next; | |
6770 | ||
e142c38c DJ |
6771 | fn = cu->first_fn; |
6772 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
6773 | if (fn->lowpc <= address && fn->highpc > address) |
6774 | goto found; | |
6775 | else | |
6776 | fn = fn->next; | |
6777 | ||
6778 | return address; | |
6779 | ||
6780 | found: | |
6781 | if (fn->seen_line) | |
6782 | return address; | |
6783 | if (address != fn->lowpc) | |
4d3c2250 | 6784 | complaint (&symfile_complaints, |
e2e0b3e5 | 6785 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 6786 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
6787 | fn->seen_line = 1; |
6788 | return fn->lowpc; | |
6789 | } | |
6790 | ||
aaa75496 JB |
6791 | /* Decode the Line Number Program (LNP) for the given line_header |
6792 | structure and CU. The actual information extracted and the type | |
6793 | of structures created from the LNP depends on the value of PST. | |
6794 | ||
6795 | 1. If PST is NULL, then this procedure uses the data from the program | |
6796 | to create all necessary symbol tables, and their linetables. | |
6797 | The compilation directory of the file is passed in COMP_DIR, | |
6798 | and must not be NULL. | |
6799 | ||
6800 | 2. If PST is not NULL, this procedure reads the program to determine | |
6801 | the list of files included by the unit represented by PST, and | |
6802 | builds all the associated partial symbol tables. In this case, | |
6803 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
6804 | is not used to compute the full name of the symtab, and therefore | |
6805 | omitting it when building the partial symtab does not introduce | |
6806 | the potential for inconsistency - a partial symtab and its associated | |
6807 | symbtab having a different fullname -). */ | |
debd256d | 6808 | |
c906108c | 6809 | static void |
debd256d | 6810 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 6811 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 6812 | { |
a8c50c1f | 6813 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 6814 | gdb_byte *line_end; |
a8c50c1f | 6815 | unsigned int bytes_read, extended_len; |
c906108c | 6816 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
6817 | CORE_ADDR baseaddr; |
6818 | struct objfile *objfile = cu->objfile; | |
aaa75496 | 6819 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 6820 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
e142c38c DJ |
6821 | |
6822 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6823 | |
debd256d JB |
6824 | line_ptr = lh->statement_program_start; |
6825 | line_end = lh->statement_program_end; | |
c906108c SS |
6826 | |
6827 | /* Read the statement sequences until there's nothing left. */ | |
6828 | while (line_ptr < line_end) | |
6829 | { | |
6830 | /* state machine registers */ | |
6831 | CORE_ADDR address = 0; | |
6832 | unsigned int file = 1; | |
6833 | unsigned int line = 1; | |
6834 | unsigned int column = 0; | |
debd256d | 6835 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
6836 | int basic_block = 0; |
6837 | int end_sequence = 0; | |
6838 | ||
aaa75496 | 6839 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 6840 | { |
aaa75496 | 6841 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
6842 | /* lh->include_dirs and lh->file_names are 0-based, but the |
6843 | directory and file name numbers in the statement program | |
6844 | are 1-based. */ | |
6845 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 6846 | char *dir = NULL; |
a738430d | 6847 | |
debd256d JB |
6848 | if (fe->dir_index) |
6849 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
6850 | |
6851 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
6852 | } |
6853 | ||
a738430d | 6854 | /* Decode the table. */ |
c5aa993b | 6855 | while (!end_sequence) |
c906108c SS |
6856 | { |
6857 | op_code = read_1_byte (abfd, line_ptr); | |
6858 | line_ptr += 1; | |
9aa1fe7e | 6859 | |
debd256d | 6860 | if (op_code >= lh->opcode_base) |
a738430d MK |
6861 | { |
6862 | /* Special operand. */ | |
debd256d JB |
6863 | adj_opcode = op_code - lh->opcode_base; |
6864 | address += (adj_opcode / lh->line_range) | |
6865 | * lh->minimum_instruction_length; | |
6866 | line += lh->line_base + (adj_opcode % lh->line_range); | |
25e43795 DJ |
6867 | if (lh->num_file_names < file) |
6868 | dwarf2_debug_line_missing_file_complaint (); | |
6869 | else | |
6870 | { | |
6871 | lh->file_names[file - 1].included_p = 1; | |
6872 | if (!decode_for_pst_p) | |
6873 | { | |
6874 | if (last_subfile != current_subfile) | |
6875 | { | |
6876 | if (last_subfile) | |
6877 | record_line (last_subfile, 0, address); | |
6878 | last_subfile = current_subfile; | |
6879 | } | |
6880 | /* Append row to matrix using current values. */ | |
6881 | record_line (current_subfile, line, | |
6882 | check_cu_functions (address, cu)); | |
366da635 | 6883 | } |
25e43795 | 6884 | } |
9aa1fe7e GK |
6885 | basic_block = 1; |
6886 | } | |
6887 | else switch (op_code) | |
c906108c SS |
6888 | { |
6889 | case DW_LNS_extended_op: | |
a8c50c1f | 6890 | extended_len = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
473b7be6 | 6891 | line_ptr += bytes_read; |
a8c50c1f | 6892 | extended_end = line_ptr + extended_len; |
c906108c SS |
6893 | extended_op = read_1_byte (abfd, line_ptr); |
6894 | line_ptr += 1; | |
6895 | switch (extended_op) | |
6896 | { | |
6897 | case DW_LNE_end_sequence: | |
6898 | end_sequence = 1; | |
25e43795 DJ |
6899 | |
6900 | if (lh->num_file_names < file) | |
6901 | dwarf2_debug_line_missing_file_complaint (); | |
6902 | else | |
6903 | { | |
6904 | lh->file_names[file - 1].included_p = 1; | |
6905 | if (!decode_for_pst_p) | |
6906 | record_line (current_subfile, 0, address); | |
6907 | } | |
c906108c SS |
6908 | break; |
6909 | case DW_LNE_set_address: | |
e7c27a73 | 6910 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
6911 | line_ptr += bytes_read; |
6912 | address += baseaddr; | |
c906108c SS |
6913 | break; |
6914 | case DW_LNE_define_file: | |
debd256d JB |
6915 | { |
6916 | char *cur_file; | |
6917 | unsigned int dir_index, mod_time, length; | |
6918 | ||
6919 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
6920 | line_ptr += bytes_read; | |
6921 | dir_index = | |
6922 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6923 | line_ptr += bytes_read; | |
6924 | mod_time = | |
6925 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6926 | line_ptr += bytes_read; | |
6927 | length = | |
6928 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6929 | line_ptr += bytes_read; | |
6930 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6931 | } | |
c906108c SS |
6932 | break; |
6933 | default: | |
4d3c2250 | 6934 | complaint (&symfile_complaints, |
e2e0b3e5 | 6935 | _("mangled .debug_line section")); |
debd256d | 6936 | return; |
c906108c | 6937 | } |
a8c50c1f DJ |
6938 | /* Make sure that we parsed the extended op correctly. If e.g. |
6939 | we expected a different address size than the producer used, | |
6940 | we may have read the wrong number of bytes. */ | |
6941 | if (line_ptr != extended_end) | |
6942 | { | |
6943 | complaint (&symfile_complaints, | |
6944 | _("mangled .debug_line section")); | |
6945 | return; | |
6946 | } | |
c906108c SS |
6947 | break; |
6948 | case DW_LNS_copy: | |
25e43795 DJ |
6949 | if (lh->num_file_names < file) |
6950 | dwarf2_debug_line_missing_file_complaint (); | |
6951 | else | |
366da635 | 6952 | { |
25e43795 DJ |
6953 | lh->file_names[file - 1].included_p = 1; |
6954 | if (!decode_for_pst_p) | |
6955 | { | |
6956 | if (last_subfile != current_subfile) | |
6957 | { | |
6958 | if (last_subfile) | |
6959 | record_line (last_subfile, 0, address); | |
6960 | last_subfile = current_subfile; | |
6961 | } | |
6962 | record_line (current_subfile, line, | |
6963 | check_cu_functions (address, cu)); | |
6964 | } | |
366da635 | 6965 | } |
c906108c SS |
6966 | basic_block = 0; |
6967 | break; | |
6968 | case DW_LNS_advance_pc: | |
debd256d | 6969 | address += lh->minimum_instruction_length |
c906108c SS |
6970 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6971 | line_ptr += bytes_read; | |
6972 | break; | |
6973 | case DW_LNS_advance_line: | |
6974 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
6975 | line_ptr += bytes_read; | |
6976 | break; | |
6977 | case DW_LNS_set_file: | |
debd256d | 6978 | { |
a738430d MK |
6979 | /* The arrays lh->include_dirs and lh->file_names are |
6980 | 0-based, but the directory and file name numbers in | |
6981 | the statement program are 1-based. */ | |
debd256d | 6982 | struct file_entry *fe; |
4f1520fb | 6983 | char *dir = NULL; |
a738430d | 6984 | |
debd256d JB |
6985 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6986 | line_ptr += bytes_read; | |
25e43795 DJ |
6987 | if (lh->num_file_names < file) |
6988 | dwarf2_debug_line_missing_file_complaint (); | |
6989 | else | |
6990 | { | |
6991 | fe = &lh->file_names[file - 1]; | |
6992 | if (fe->dir_index) | |
6993 | dir = lh->include_dirs[fe->dir_index - 1]; | |
6994 | if (!decode_for_pst_p) | |
6995 | { | |
6996 | last_subfile = current_subfile; | |
6997 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
6998 | } | |
6999 | } | |
debd256d | 7000 | } |
c906108c SS |
7001 | break; |
7002 | case DW_LNS_set_column: | |
7003 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7004 | line_ptr += bytes_read; | |
7005 | break; | |
7006 | case DW_LNS_negate_stmt: | |
7007 | is_stmt = (!is_stmt); | |
7008 | break; | |
7009 | case DW_LNS_set_basic_block: | |
7010 | basic_block = 1; | |
7011 | break; | |
c2c6d25f JM |
7012 | /* Add to the address register of the state machine the |
7013 | address increment value corresponding to special opcode | |
a738430d MK |
7014 | 255. I.e., this value is scaled by the minimum |
7015 | instruction length since special opcode 255 would have | |
7016 | scaled the the increment. */ | |
c906108c | 7017 | case DW_LNS_const_add_pc: |
debd256d JB |
7018 | address += (lh->minimum_instruction_length |
7019 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
7020 | break; |
7021 | case DW_LNS_fixed_advance_pc: | |
7022 | address += read_2_bytes (abfd, line_ptr); | |
7023 | line_ptr += 2; | |
7024 | break; | |
9aa1fe7e | 7025 | default: |
a738430d MK |
7026 | { |
7027 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 7028 | int i; |
a738430d | 7029 | |
debd256d | 7030 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
7031 | { |
7032 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7033 | line_ptr += bytes_read; | |
7034 | } | |
7035 | } | |
c906108c SS |
7036 | } |
7037 | } | |
7038 | } | |
aaa75496 JB |
7039 | |
7040 | if (decode_for_pst_p) | |
7041 | { | |
7042 | int file_index; | |
7043 | ||
7044 | /* Now that we're done scanning the Line Header Program, we can | |
7045 | create the psymtab of each included file. */ | |
7046 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
7047 | if (lh->file_names[file_index].included_p == 1) | |
7048 | { | |
5b5464ad JB |
7049 | const struct file_entry fe = lh->file_names [file_index]; |
7050 | char *include_name = fe.name; | |
7051 | char *dir_name = NULL; | |
7052 | char *pst_filename = pst->filename; | |
7053 | ||
7054 | if (fe.dir_index) | |
7055 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
7056 | ||
7057 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
7058 | { | |
1754f103 MK |
7059 | include_name = concat (dir_name, SLASH_STRING, |
7060 | include_name, (char *)NULL); | |
5b5464ad JB |
7061 | make_cleanup (xfree, include_name); |
7062 | } | |
7063 | ||
7064 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
7065 | { | |
1754f103 MK |
7066 | pst_filename = concat (pst->dirname, SLASH_STRING, |
7067 | pst_filename, (char *)NULL); | |
5b5464ad JB |
7068 | make_cleanup (xfree, pst_filename); |
7069 | } | |
7070 | ||
7071 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
7072 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
7073 | } | |
7074 | } | |
cb1df416 DJ |
7075 | else |
7076 | { | |
7077 | /* Make sure a symtab is created for every file, even files | |
7078 | which contain only variables (i.e. no code with associated | |
7079 | line numbers). */ | |
7080 | ||
7081 | int i; | |
7082 | struct file_entry *fe; | |
7083 | ||
7084 | for (i = 0; i < lh->num_file_names; i++) | |
7085 | { | |
7086 | char *dir = NULL; | |
7087 | fe = &lh->file_names[i]; | |
7088 | if (fe->dir_index) | |
7089 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7090 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
7091 | ||
7092 | /* Skip the main file; we don't need it, and it must be | |
7093 | allocated last, so that it will show up before the | |
7094 | non-primary symtabs in the objfile's symtab list. */ | |
7095 | if (current_subfile == first_subfile) | |
7096 | continue; | |
7097 | ||
7098 | if (current_subfile->symtab == NULL) | |
7099 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
7100 | cu->objfile); | |
7101 | fe->symtab = current_subfile->symtab; | |
7102 | } | |
7103 | } | |
c906108c SS |
7104 | } |
7105 | ||
7106 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
7107 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
7108 | or NULL if not known. COMP_DIR is the compilation directory for the |
7109 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
7110 | This routine tries to keep line numbers from identical absolute and |
7111 | relative file names in a common subfile. | |
7112 | ||
7113 | Using the `list' example from the GDB testsuite, which resides in | |
7114 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
7115 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
7116 | ||
c5aa993b JM |
7117 | DW_AT_name: /srcdir/list0.c |
7118 | DW_AT_comp_dir: /compdir | |
357e46e7 | 7119 | files.files[0].name: list0.h |
c5aa993b | 7120 | files.files[0].dir: /srcdir |
357e46e7 | 7121 | files.files[1].name: list0.c |
c5aa993b | 7122 | files.files[1].dir: /srcdir |
c906108c SS |
7123 | |
7124 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
7125 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
7126 | start_subfile will ensure that this happens provided that we pass the | |
7127 | concatenation of files.files[1].dir and files.files[1].name as the | |
7128 | subfile's name. */ | |
c906108c SS |
7129 | |
7130 | static void | |
4f1520fb | 7131 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 7132 | { |
4f1520fb FR |
7133 | char *fullname; |
7134 | ||
7135 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
7136 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
7137 | second argument to start_subfile. To be consistent, we do the | |
7138 | same here. In order not to lose the line information directory, | |
7139 | we concatenate it to the filename when it makes sense. | |
7140 | Note that the Dwarf3 standard says (speaking of filenames in line | |
7141 | information): ``The directory index is ignored for file names | |
7142 | that represent full path names''. Thus ignoring dirname in the | |
7143 | `else' branch below isn't an issue. */ | |
c906108c | 7144 | |
d5166ae1 | 7145 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
7146 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
7147 | else | |
7148 | fullname = filename; | |
c906108c | 7149 | |
4f1520fb FR |
7150 | start_subfile (fullname, comp_dir); |
7151 | ||
7152 | if (fullname != filename) | |
7153 | xfree (fullname); | |
c906108c SS |
7154 | } |
7155 | ||
4c2df51b DJ |
7156 | static void |
7157 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 7158 | struct dwarf2_cu *cu) |
4c2df51b | 7159 | { |
e7c27a73 DJ |
7160 | struct objfile *objfile = cu->objfile; |
7161 | struct comp_unit_head *cu_header = &cu->header; | |
7162 | ||
4c2df51b DJ |
7163 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
7164 | code here to turn a symbol with DW_AT_external and a | |
7165 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
7166 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
7167 | with some versions of binutils) where shared libraries could have | |
7168 | relocations against symbols in their debug information - the | |
7169 | minimal symbol would have the right address, but the debug info | |
7170 | would not. It's no longer necessary, because we will explicitly | |
7171 | apply relocations when we read in the debug information now. */ | |
7172 | ||
7173 | /* A DW_AT_location attribute with no contents indicates that a | |
7174 | variable has been optimized away. */ | |
7175 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
7176 | { | |
7177 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
7178 | return; | |
7179 | } | |
7180 | ||
7181 | /* Handle one degenerate form of location expression specially, to | |
7182 | preserve GDB's previous behavior when section offsets are | |
7183 | specified. If this is just a DW_OP_addr then mark this symbol | |
7184 | as LOC_STATIC. */ | |
7185 | ||
7186 | if (attr_form_is_block (attr) | |
7187 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
7188 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
7189 | { | |
891d2f0b | 7190 | unsigned int dummy; |
4c2df51b DJ |
7191 | |
7192 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 7193 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
7194 | fixup_symbol_section (sym, objfile); |
7195 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
7196 | SYMBOL_SECTION (sym)); | |
7197 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
7198 | return; | |
7199 | } | |
7200 | ||
7201 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
7202 | expression evaluator, and use LOC_COMPUTED only when necessary | |
7203 | (i.e. when the value of a register or memory location is | |
7204 | referenced, or a thread-local block, etc.). Then again, it might | |
7205 | not be worthwhile. I'm assuming that it isn't unless performance | |
7206 | or memory numbers show me otherwise. */ | |
7207 | ||
e7c27a73 | 7208 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
7209 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
7210 | } | |
7211 | ||
c906108c SS |
7212 | /* Given a pointer to a DWARF information entry, figure out if we need |
7213 | to make a symbol table entry for it, and if so, create a new entry | |
7214 | and return a pointer to it. | |
7215 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 7216 | used the passed type. */ |
c906108c SS |
7217 | |
7218 | static struct symbol * | |
e7c27a73 | 7219 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 7220 | { |
e7c27a73 | 7221 | struct objfile *objfile = cu->objfile; |
c906108c SS |
7222 | struct symbol *sym = NULL; |
7223 | char *name; | |
7224 | struct attribute *attr = NULL; | |
7225 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
7226 | CORE_ADDR baseaddr; |
7227 | ||
7228 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 7229 | |
5c4e30ca | 7230 | if (die->tag != DW_TAG_namespace) |
e142c38c | 7231 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
7232 | else |
7233 | name = TYPE_NAME (type); | |
7234 | ||
c906108c SS |
7235 | if (name) |
7236 | { | |
4a146b47 | 7237 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
7238 | sizeof (struct symbol)); |
7239 | OBJSTAT (objfile, n_syms++); | |
7240 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
7241 | |
7242 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 7243 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 7244 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
7245 | |
7246 | /* Default assumptions. | |
c5aa993b | 7247 | Use the passed type or decode it from the die. */ |
176620f1 | 7248 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 7249 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
7250 | if (type != NULL) |
7251 | SYMBOL_TYPE (sym) = type; | |
7252 | else | |
e7c27a73 | 7253 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 7254 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
7255 | if (attr) |
7256 | { | |
7257 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
7258 | } | |
cb1df416 DJ |
7259 | |
7260 | attr = dwarf2_attr (die, DW_AT_decl_file, cu); | |
7261 | if (attr) | |
7262 | { | |
7263 | int file_index = DW_UNSND (attr); | |
7264 | if (cu->line_header == NULL | |
7265 | || file_index > cu->line_header->num_file_names) | |
7266 | complaint (&symfile_complaints, | |
7267 | _("file index out of range")); | |
1c3d648d | 7268 | else if (file_index > 0) |
cb1df416 DJ |
7269 | { |
7270 | struct file_entry *fe; | |
7271 | fe = &cu->line_header->file_names[file_index - 1]; | |
7272 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
7273 | } | |
7274 | } | |
7275 | ||
c906108c SS |
7276 | switch (die->tag) |
7277 | { | |
7278 | case DW_TAG_label: | |
e142c38c | 7279 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
7280 | if (attr) |
7281 | { | |
7282 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
7283 | } | |
7284 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
7285 | break; | |
7286 | case DW_TAG_subprogram: | |
7287 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
7288 | finish_block. */ | |
7289 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 7290 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
7291 | if (attr2 && (DW_UNSND (attr2) != 0)) |
7292 | { | |
7293 | add_symbol_to_list (sym, &global_symbols); | |
7294 | } | |
7295 | else | |
7296 | { | |
e142c38c | 7297 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7298 | } |
7299 | break; | |
7300 | case DW_TAG_variable: | |
7301 | /* Compilation with minimal debug info may result in variables | |
7302 | with missing type entries. Change the misleading `void' type | |
7303 | to something sensible. */ | |
7304 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
64c50499 UW |
7305 | SYMBOL_TYPE (sym) |
7306 | = builtin_type (current_gdbarch)->nodebug_data_symbol; | |
7307 | ||
e142c38c | 7308 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7309 | if (attr) |
7310 | { | |
e7c27a73 | 7311 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 7312 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
7313 | if (attr2 && (DW_UNSND (attr2) != 0)) |
7314 | add_symbol_to_list (sym, &global_symbols); | |
7315 | else | |
e142c38c | 7316 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7317 | break; |
7318 | } | |
e142c38c | 7319 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7320 | if (attr) |
7321 | { | |
e7c27a73 | 7322 | var_decode_location (attr, sym, cu); |
e142c38c | 7323 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7324 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 7325 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 7326 | else |
e142c38c | 7327 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7328 | } |
7329 | else | |
7330 | { | |
7331 | /* We do not know the address of this symbol. | |
c5aa993b JM |
7332 | If it is an external symbol and we have type information |
7333 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
7334 | The address of the variable will then be determined from | |
7335 | the minimal symbol table whenever the variable is | |
7336 | referenced. */ | |
e142c38c | 7337 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7338 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 7339 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
7340 | { |
7341 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
7342 | add_symbol_to_list (sym, &global_symbols); | |
7343 | } | |
7344 | } | |
7345 | break; | |
7346 | case DW_TAG_formal_parameter: | |
e142c38c | 7347 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7348 | if (attr) |
7349 | { | |
e7c27a73 | 7350 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
7351 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
7352 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
7353 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 7354 | } |
e142c38c | 7355 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7356 | if (attr) |
7357 | { | |
e7c27a73 | 7358 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7359 | } |
e142c38c | 7360 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7361 | break; |
7362 | case DW_TAG_unspecified_parameters: | |
7363 | /* From varargs functions; gdb doesn't seem to have any | |
7364 | interest in this information, so just ignore it for now. | |
7365 | (FIXME?) */ | |
7366 | break; | |
7367 | case DW_TAG_class_type: | |
680b30c7 | 7368 | case DW_TAG_interface_type: |
c906108c SS |
7369 | case DW_TAG_structure_type: |
7370 | case DW_TAG_union_type: | |
72019c9c | 7371 | case DW_TAG_set_type: |
c906108c SS |
7372 | case DW_TAG_enumeration_type: |
7373 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 7374 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 7375 | |
63d06c5c DC |
7376 | /* Make sure that the symbol includes appropriate enclosing |
7377 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 7378 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
7379 | the type. */ |
7380 | ||
987504bb JJ |
7381 | if (cu->language == language_cplus |
7382 | || cu->language == language_java) | |
c906108c | 7383 | { |
63d06c5c DC |
7384 | struct type *type = SYMBOL_TYPE (sym); |
7385 | ||
7386 | if (TYPE_TAG_NAME (type) != NULL) | |
7387 | { | |
7388 | /* FIXME: carlton/2003-11-10: Should this use | |
7389 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
7390 | arises further down in this function.) */ |
7391 | /* The type's name is already allocated along with | |
7392 | this objfile, so we don't need to duplicate it | |
7393 | for the symbol. */ | |
7394 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 7395 | } |
c906108c | 7396 | } |
63d06c5c DC |
7397 | |
7398 | { | |
987504bb | 7399 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
7400 | really ever be static objects: otherwise, if you try |
7401 | to, say, break of a class's method and you're in a file | |
7402 | which doesn't mention that class, it won't work unless | |
7403 | the check for all static symbols in lookup_symbol_aux | |
7404 | saves you. See the OtherFileClass tests in | |
7405 | gdb.c++/namespace.exp. */ | |
7406 | ||
7407 | struct pending **list_to_add; | |
7408 | ||
e142c38c | 7409 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7410 | && (cu->language == language_cplus |
7411 | || cu->language == language_java) | |
e142c38c | 7412 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7413 | |
7414 | add_symbol_to_list (sym, list_to_add); | |
7415 | ||
7416 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb JJ |
7417 | defines a typedef for "foo". A Java class declaration also |
7418 | defines a typedef for the class. Synthesize a typedef symbol | |
7419 | so that "ptype foo" works as expected. */ | |
7420 | if (cu->language == language_cplus | |
8c6860bb JB |
7421 | || cu->language == language_java |
7422 | || cu->language == language_ada) | |
63d06c5c DC |
7423 | { |
7424 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 7425 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
7426 | sizeof (struct symbol)); |
7427 | *typedef_sym = *sym; | |
7428 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
d8151005 DJ |
7429 | /* The symbol's name is already allocated along with |
7430 | this objfile, so we don't need to duplicate it for | |
7431 | the type. */ | |
63d06c5c | 7432 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 7433 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
7434 | add_symbol_to_list (typedef_sym, list_to_add); |
7435 | } | |
7436 | } | |
c906108c SS |
7437 | break; |
7438 | case DW_TAG_typedef: | |
63d06c5c DC |
7439 | if (processing_has_namespace_info |
7440 | && processing_current_prefix[0] != '\0') | |
7441 | { | |
987504bb JJ |
7442 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7443 | processing_current_prefix, | |
7444 | name, cu); | |
63d06c5c DC |
7445 | } |
7446 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7447 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 7448 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 7449 | break; |
c906108c | 7450 | case DW_TAG_base_type: |
a02abb62 | 7451 | case DW_TAG_subrange_type: |
c906108c | 7452 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 7453 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 7454 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7455 | break; |
7456 | case DW_TAG_enumerator: | |
63d06c5c DC |
7457 | if (processing_has_namespace_info |
7458 | && processing_current_prefix[0] != '\0') | |
7459 | { | |
987504bb JJ |
7460 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7461 | processing_current_prefix, | |
7462 | name, cu); | |
63d06c5c | 7463 | } |
e142c38c | 7464 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7465 | if (attr) |
7466 | { | |
e7c27a73 | 7467 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7468 | } |
63d06c5c DC |
7469 | { |
7470 | /* NOTE: carlton/2003-11-10: See comment above in the | |
7471 | DW_TAG_class_type, etc. block. */ | |
7472 | ||
7473 | struct pending **list_to_add; | |
7474 | ||
e142c38c | 7475 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7476 | && (cu->language == language_cplus |
7477 | || cu->language == language_java) | |
e142c38c | 7478 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7479 | |
7480 | add_symbol_to_list (sym, list_to_add); | |
7481 | } | |
c906108c | 7482 | break; |
5c4e30ca DC |
7483 | case DW_TAG_namespace: |
7484 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7485 | add_symbol_to_list (sym, &global_symbols); | |
7486 | break; | |
c906108c SS |
7487 | default: |
7488 | /* Not a tag we recognize. Hopefully we aren't processing | |
7489 | trash data, but since we must specifically ignore things | |
7490 | we don't recognize, there is nothing else we should do at | |
7491 | this point. */ | |
e2e0b3e5 | 7492 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 7493 | dwarf_tag_name (die->tag)); |
c906108c SS |
7494 | break; |
7495 | } | |
7496 | } | |
7497 | return (sym); | |
7498 | } | |
7499 | ||
7500 | /* Copy constant value from an attribute to a symbol. */ | |
7501 | ||
7502 | static void | |
107d2387 | 7503 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 7504 | struct dwarf2_cu *cu) |
c906108c | 7505 | { |
e7c27a73 DJ |
7506 | struct objfile *objfile = cu->objfile; |
7507 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7508 | struct dwarf_block *blk; |
7509 | ||
7510 | switch (attr->form) | |
7511 | { | |
7512 | case DW_FORM_addr: | |
107d2387 | 7513 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 7514 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7515 | cu_header->addr_size, |
7516 | TYPE_LENGTH (SYMBOL_TYPE | |
7517 | (sym))); | |
4e38b386 | 7518 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7519 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
7520 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
7521 | it's body - store_unsigned_integer. */ | |
7522 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
7523 | DW_ADDR (attr)); | |
c906108c SS |
7524 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
7525 | break; | |
7526 | case DW_FORM_block1: | |
7527 | case DW_FORM_block2: | |
7528 | case DW_FORM_block4: | |
7529 | case DW_FORM_block: | |
7530 | blk = DW_BLOCK (attr); | |
7531 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 7532 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7533 | blk->size, |
7534 | TYPE_LENGTH (SYMBOL_TYPE | |
7535 | (sym))); | |
4e38b386 | 7536 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7537 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
7538 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
7539 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7540 | break; | |
2df3850c JM |
7541 | |
7542 | /* The DW_AT_const_value attributes are supposed to carry the | |
7543 | symbol's value "represented as it would be on the target | |
7544 | architecture." By the time we get here, it's already been | |
7545 | converted to host endianness, so we just need to sign- or | |
7546 | zero-extend it as appropriate. */ | |
7547 | case DW_FORM_data1: | |
7548 | dwarf2_const_value_data (attr, sym, 8); | |
7549 | break; | |
c906108c | 7550 | case DW_FORM_data2: |
2df3850c JM |
7551 | dwarf2_const_value_data (attr, sym, 16); |
7552 | break; | |
c906108c | 7553 | case DW_FORM_data4: |
2df3850c JM |
7554 | dwarf2_const_value_data (attr, sym, 32); |
7555 | break; | |
c906108c | 7556 | case DW_FORM_data8: |
2df3850c JM |
7557 | dwarf2_const_value_data (attr, sym, 64); |
7558 | break; | |
7559 | ||
c906108c | 7560 | case DW_FORM_sdata: |
2df3850c JM |
7561 | SYMBOL_VALUE (sym) = DW_SND (attr); |
7562 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7563 | break; | |
7564 | ||
c906108c SS |
7565 | case DW_FORM_udata: |
7566 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
7567 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7568 | break; | |
2df3850c | 7569 | |
c906108c | 7570 | default: |
4d3c2250 | 7571 | complaint (&symfile_complaints, |
e2e0b3e5 | 7572 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 7573 | dwarf_form_name (attr->form)); |
c906108c SS |
7574 | SYMBOL_VALUE (sym) = 0; |
7575 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7576 | break; | |
7577 | } | |
7578 | } | |
7579 | ||
2df3850c JM |
7580 | |
7581 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
7582 | or zero-extend it as appropriate for the symbol's type. */ | |
7583 | static void | |
7584 | dwarf2_const_value_data (struct attribute *attr, | |
7585 | struct symbol *sym, | |
7586 | int bits) | |
7587 | { | |
7588 | LONGEST l = DW_UNSND (attr); | |
7589 | ||
7590 | if (bits < sizeof (l) * 8) | |
7591 | { | |
7592 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
7593 | l &= ((LONGEST) 1 << bits) - 1; | |
7594 | else | |
bf9198f1 | 7595 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
7596 | } |
7597 | ||
7598 | SYMBOL_VALUE (sym) = l; | |
7599 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7600 | } | |
7601 | ||
7602 | ||
c906108c SS |
7603 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
7604 | ||
7605 | static struct type * | |
e7c27a73 | 7606 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7607 | { |
7608 | struct type *type; | |
7609 | struct attribute *type_attr; | |
7610 | struct die_info *type_die; | |
c906108c | 7611 | |
e142c38c | 7612 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
7613 | if (!type_attr) |
7614 | { | |
7615 | /* A missing DW_AT_type represents a void type. */ | |
6ccb9162 | 7616 | return builtin_type (current_gdbarch)->builtin_void; |
c906108c SS |
7617 | } |
7618 | else | |
10b3939b DJ |
7619 | type_die = follow_die_ref (die, type_attr, cu); |
7620 | ||
e7c27a73 | 7621 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7622 | if (!type) |
7623 | { | |
7624 | dump_die (type_die); | |
8a3fe4f8 | 7625 | error (_("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]"), |
e7c27a73 | 7626 | cu->objfile->name); |
c906108c SS |
7627 | } |
7628 | return type; | |
7629 | } | |
7630 | ||
7631 | /* Return the containing type of the die in question using its | |
7632 | DW_AT_containing_type attribute. */ | |
7633 | ||
7634 | static struct type * | |
e7c27a73 | 7635 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7636 | { |
7637 | struct type *type = NULL; | |
7638 | struct attribute *type_attr; | |
7639 | struct die_info *type_die = NULL; | |
c906108c | 7640 | |
e142c38c | 7641 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
7642 | if (type_attr) |
7643 | { | |
10b3939b | 7644 | type_die = follow_die_ref (die, type_attr, cu); |
e7c27a73 | 7645 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7646 | } |
7647 | if (!type) | |
7648 | { | |
7649 | if (type_die) | |
7650 | dump_die (type_die); | |
8a3fe4f8 | 7651 | error (_("Dwarf Error: Problem turning containing type into gdb type [in module %s]"), |
e7c27a73 | 7652 | cu->objfile->name); |
c906108c SS |
7653 | } |
7654 | return type; | |
7655 | } | |
7656 | ||
c906108c | 7657 | static struct type * |
e7c27a73 | 7658 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7659 | { |
7660 | if (die->type) | |
7661 | { | |
7662 | return die->type; | |
7663 | } | |
7664 | else | |
7665 | { | |
e7c27a73 | 7666 | read_type_die (die, cu); |
c906108c SS |
7667 | if (!die->type) |
7668 | { | |
7669 | dump_die (die); | |
8a3fe4f8 | 7670 | error (_("Dwarf Error: Cannot find type of die [in module %s]"), |
e7c27a73 | 7671 | cu->objfile->name); |
c906108c SS |
7672 | } |
7673 | return die->type; | |
7674 | } | |
7675 | } | |
7676 | ||
7677 | static void | |
e7c27a73 | 7678 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7679 | { |
e142c38c | 7680 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
7681 | const char *old_prefix = processing_current_prefix; |
7682 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
7683 | processing_current_prefix = prefix; | |
7684 | ||
c906108c SS |
7685 | switch (die->tag) |
7686 | { | |
7687 | case DW_TAG_class_type: | |
680b30c7 | 7688 | case DW_TAG_interface_type: |
c906108c SS |
7689 | case DW_TAG_structure_type: |
7690 | case DW_TAG_union_type: | |
134d01f1 | 7691 | read_structure_type (die, cu); |
c906108c SS |
7692 | break; |
7693 | case DW_TAG_enumeration_type: | |
134d01f1 | 7694 | read_enumeration_type (die, cu); |
c906108c SS |
7695 | break; |
7696 | case DW_TAG_subprogram: | |
7697 | case DW_TAG_subroutine_type: | |
e7c27a73 | 7698 | read_subroutine_type (die, cu); |
c906108c SS |
7699 | break; |
7700 | case DW_TAG_array_type: | |
e7c27a73 | 7701 | read_array_type (die, cu); |
c906108c | 7702 | break; |
72019c9c GM |
7703 | case DW_TAG_set_type: |
7704 | read_set_type (die, cu); | |
7705 | break; | |
c906108c | 7706 | case DW_TAG_pointer_type: |
e7c27a73 | 7707 | read_tag_pointer_type (die, cu); |
c906108c SS |
7708 | break; |
7709 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 7710 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
7711 | break; |
7712 | case DW_TAG_reference_type: | |
e7c27a73 | 7713 | read_tag_reference_type (die, cu); |
c906108c SS |
7714 | break; |
7715 | case DW_TAG_const_type: | |
e7c27a73 | 7716 | read_tag_const_type (die, cu); |
c906108c SS |
7717 | break; |
7718 | case DW_TAG_volatile_type: | |
e7c27a73 | 7719 | read_tag_volatile_type (die, cu); |
c906108c SS |
7720 | break; |
7721 | case DW_TAG_string_type: | |
e7c27a73 | 7722 | read_tag_string_type (die, cu); |
c906108c SS |
7723 | break; |
7724 | case DW_TAG_typedef: | |
e7c27a73 | 7725 | read_typedef (die, cu); |
c906108c | 7726 | break; |
a02abb62 JB |
7727 | case DW_TAG_subrange_type: |
7728 | read_subrange_type (die, cu); | |
7729 | break; | |
c906108c | 7730 | case DW_TAG_base_type: |
e7c27a73 | 7731 | read_base_type (die, cu); |
c906108c | 7732 | break; |
81a17f79 JB |
7733 | case DW_TAG_unspecified_type: |
7734 | read_unspecified_type (die, cu); | |
7735 | break; | |
c906108c | 7736 | default: |
a1f5b845 | 7737 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 7738 | dwarf_tag_name (die->tag)); |
c906108c SS |
7739 | break; |
7740 | } | |
63d06c5c DC |
7741 | |
7742 | processing_current_prefix = old_prefix; | |
7743 | do_cleanups (back_to); | |
7744 | } | |
7745 | ||
fdde2d81 DC |
7746 | /* Return the name of the namespace/class that DIE is defined within, |
7747 | or "" if we can't tell. The caller should xfree the result. */ | |
7748 | ||
7749 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
7750 | therein) for an example of how to use this function to deal with | |
7751 | DW_AT_specification. */ | |
7752 | ||
7753 | static char * | |
e142c38c | 7754 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
7755 | { |
7756 | struct die_info *parent; | |
7757 | ||
987504bb JJ |
7758 | if (cu->language != language_cplus |
7759 | && cu->language != language_java) | |
63d06c5c DC |
7760 | return NULL; |
7761 | ||
7762 | parent = die->parent; | |
7763 | ||
7764 | if (parent == NULL) | |
7765 | { | |
8176b9b8 | 7766 | return xstrdup (""); |
63d06c5c DC |
7767 | } |
7768 | else | |
7769 | { | |
63d06c5c DC |
7770 | switch (parent->tag) { |
7771 | case DW_TAG_namespace: | |
7772 | { | |
8176b9b8 DC |
7773 | /* FIXME: carlton/2004-03-05: Should I follow extension dies |
7774 | before doing this check? */ | |
7775 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) | |
7776 | { | |
7777 | return xstrdup (TYPE_TAG_NAME (parent->type)); | |
7778 | } | |
7779 | else | |
7780 | { | |
7781 | int dummy; | |
7782 | char *parent_prefix = determine_prefix (parent, cu); | |
987504bb | 7783 | char *retval = typename_concat (NULL, parent_prefix, |
8176b9b8 | 7784 | namespace_name (parent, &dummy, |
987504bb JJ |
7785 | cu), |
7786 | cu); | |
8176b9b8 DC |
7787 | xfree (parent_prefix); |
7788 | return retval; | |
7789 | } | |
63d06c5c DC |
7790 | } |
7791 | break; | |
7792 | case DW_TAG_class_type: | |
680b30c7 | 7793 | case DW_TAG_interface_type: |
63d06c5c DC |
7794 | case DW_TAG_structure_type: |
7795 | { | |
8176b9b8 | 7796 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) |
63d06c5c | 7797 | { |
8176b9b8 | 7798 | return xstrdup (TYPE_TAG_NAME (parent->type)); |
63d06c5c DC |
7799 | } |
7800 | else | |
8176b9b8 DC |
7801 | { |
7802 | const char *old_prefix = processing_current_prefix; | |
7803 | char *new_prefix = determine_prefix (parent, cu); | |
7804 | char *retval; | |
7805 | ||
7806 | processing_current_prefix = new_prefix; | |
7807 | retval = determine_class_name (parent, cu); | |
7808 | processing_current_prefix = old_prefix; | |
7809 | ||
7810 | xfree (new_prefix); | |
7811 | return retval; | |
7812 | } | |
63d06c5c | 7813 | } |
63d06c5c | 7814 | default: |
8176b9b8 | 7815 | return determine_prefix (parent, cu); |
63d06c5c | 7816 | } |
63d06c5c DC |
7817 | } |
7818 | } | |
7819 | ||
987504bb JJ |
7820 | /* Return a newly-allocated string formed by concatenating PREFIX and |
7821 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
7822 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
7823 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
7824 | is used to determine the language and hence, the appropriate separator. */ | |
7825 | ||
7826 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
7827 | |
7828 | static char * | |
987504bb JJ |
7829 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
7830 | struct dwarf2_cu *cu) | |
63d06c5c | 7831 | { |
987504bb | 7832 | char *sep; |
63d06c5c | 7833 | |
987504bb JJ |
7834 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
7835 | sep = ""; | |
7836 | else if (cu->language == language_java) | |
7837 | sep = "."; | |
7838 | else | |
7839 | sep = "::"; | |
63d06c5c | 7840 | |
987504bb JJ |
7841 | if (obs == NULL) |
7842 | { | |
7843 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
7844 | retval[0] = '\0'; | |
7845 | ||
7846 | if (prefix) | |
7847 | { | |
7848 | strcpy (retval, prefix); | |
7849 | strcat (retval, sep); | |
7850 | } | |
7851 | if (suffix) | |
7852 | strcat (retval, suffix); | |
7853 | ||
63d06c5c DC |
7854 | return retval; |
7855 | } | |
987504bb JJ |
7856 | else |
7857 | { | |
7858 | /* We have an obstack. */ | |
7859 | return obconcat (obs, prefix, sep, suffix); | |
7860 | } | |
63d06c5c DC |
7861 | } |
7862 | ||
c906108c SS |
7863 | #if 0 |
7864 | struct die_info * | |
fba45db2 | 7865 | copy_die (struct die_info *old_die) |
c906108c SS |
7866 | { |
7867 | struct die_info *new_die; | |
7868 | int i, num_attrs; | |
7869 | ||
7870 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
7871 | memset (new_die, 0, sizeof (struct die_info)); | |
7872 | ||
7873 | new_die->tag = old_die->tag; | |
7874 | new_die->has_children = old_die->has_children; | |
7875 | new_die->abbrev = old_die->abbrev; | |
7876 | new_die->offset = old_die->offset; | |
7877 | new_die->type = NULL; | |
7878 | ||
7879 | num_attrs = old_die->num_attrs; | |
7880 | new_die->num_attrs = num_attrs; | |
7881 | new_die->attrs = (struct attribute *) | |
7882 | xmalloc (num_attrs * sizeof (struct attribute)); | |
7883 | ||
7884 | for (i = 0; i < old_die->num_attrs; ++i) | |
7885 | { | |
7886 | new_die->attrs[i].name = old_die->attrs[i].name; | |
7887 | new_die->attrs[i].form = old_die->attrs[i].form; | |
7888 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
7889 | } | |
7890 | ||
7891 | new_die->next = NULL; | |
7892 | return new_die; | |
7893 | } | |
7894 | #endif | |
7895 | ||
7896 | /* Return sibling of die, NULL if no sibling. */ | |
7897 | ||
f9aca02d | 7898 | static struct die_info * |
fba45db2 | 7899 | sibling_die (struct die_info *die) |
c906108c | 7900 | { |
639d11d3 | 7901 | return die->sibling; |
c906108c SS |
7902 | } |
7903 | ||
7904 | /* Get linkage name of a die, return NULL if not found. */ | |
7905 | ||
7906 | static char * | |
e142c38c | 7907 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7908 | { |
7909 | struct attribute *attr; | |
7910 | ||
e142c38c | 7911 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
7912 | if (attr && DW_STRING (attr)) |
7913 | return DW_STRING (attr); | |
e142c38c | 7914 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
7915 | if (attr && DW_STRING (attr)) |
7916 | return DW_STRING (attr); | |
7917 | return NULL; | |
7918 | } | |
7919 | ||
9219021c DC |
7920 | /* Get name of a die, return NULL if not found. */ |
7921 | ||
7922 | static char * | |
e142c38c | 7923 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7924 | { |
7925 | struct attribute *attr; | |
7926 | ||
e142c38c | 7927 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
7928 | if (attr && DW_STRING (attr)) |
7929 | return DW_STRING (attr); | |
7930 | return NULL; | |
7931 | } | |
7932 | ||
7933 | /* Return the die that this die in an extension of, or NULL if there | |
7934 | is none. */ | |
7935 | ||
7936 | static struct die_info * | |
e142c38c | 7937 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7938 | { |
7939 | struct attribute *attr; | |
9219021c | 7940 | |
e142c38c | 7941 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
7942 | if (attr == NULL) |
7943 | return NULL; | |
7944 | ||
10b3939b | 7945 | return follow_die_ref (die, attr, cu); |
9219021c DC |
7946 | } |
7947 | ||
c906108c SS |
7948 | /* Convert a DIE tag into its string name. */ |
7949 | ||
7950 | static char * | |
aa1ee363 | 7951 | dwarf_tag_name (unsigned tag) |
c906108c SS |
7952 | { |
7953 | switch (tag) | |
7954 | { | |
7955 | case DW_TAG_padding: | |
7956 | return "DW_TAG_padding"; | |
7957 | case DW_TAG_array_type: | |
7958 | return "DW_TAG_array_type"; | |
7959 | case DW_TAG_class_type: | |
7960 | return "DW_TAG_class_type"; | |
7961 | case DW_TAG_entry_point: | |
7962 | return "DW_TAG_entry_point"; | |
7963 | case DW_TAG_enumeration_type: | |
7964 | return "DW_TAG_enumeration_type"; | |
7965 | case DW_TAG_formal_parameter: | |
7966 | return "DW_TAG_formal_parameter"; | |
7967 | case DW_TAG_imported_declaration: | |
7968 | return "DW_TAG_imported_declaration"; | |
7969 | case DW_TAG_label: | |
7970 | return "DW_TAG_label"; | |
7971 | case DW_TAG_lexical_block: | |
7972 | return "DW_TAG_lexical_block"; | |
7973 | case DW_TAG_member: | |
7974 | return "DW_TAG_member"; | |
7975 | case DW_TAG_pointer_type: | |
7976 | return "DW_TAG_pointer_type"; | |
7977 | case DW_TAG_reference_type: | |
7978 | return "DW_TAG_reference_type"; | |
7979 | case DW_TAG_compile_unit: | |
7980 | return "DW_TAG_compile_unit"; | |
7981 | case DW_TAG_string_type: | |
7982 | return "DW_TAG_string_type"; | |
7983 | case DW_TAG_structure_type: | |
7984 | return "DW_TAG_structure_type"; | |
7985 | case DW_TAG_subroutine_type: | |
7986 | return "DW_TAG_subroutine_type"; | |
7987 | case DW_TAG_typedef: | |
7988 | return "DW_TAG_typedef"; | |
7989 | case DW_TAG_union_type: | |
7990 | return "DW_TAG_union_type"; | |
7991 | case DW_TAG_unspecified_parameters: | |
7992 | return "DW_TAG_unspecified_parameters"; | |
7993 | case DW_TAG_variant: | |
7994 | return "DW_TAG_variant"; | |
7995 | case DW_TAG_common_block: | |
7996 | return "DW_TAG_common_block"; | |
7997 | case DW_TAG_common_inclusion: | |
7998 | return "DW_TAG_common_inclusion"; | |
7999 | case DW_TAG_inheritance: | |
8000 | return "DW_TAG_inheritance"; | |
8001 | case DW_TAG_inlined_subroutine: | |
8002 | return "DW_TAG_inlined_subroutine"; | |
8003 | case DW_TAG_module: | |
8004 | return "DW_TAG_module"; | |
8005 | case DW_TAG_ptr_to_member_type: | |
8006 | return "DW_TAG_ptr_to_member_type"; | |
8007 | case DW_TAG_set_type: | |
8008 | return "DW_TAG_set_type"; | |
8009 | case DW_TAG_subrange_type: | |
8010 | return "DW_TAG_subrange_type"; | |
8011 | case DW_TAG_with_stmt: | |
8012 | return "DW_TAG_with_stmt"; | |
8013 | case DW_TAG_access_declaration: | |
8014 | return "DW_TAG_access_declaration"; | |
8015 | case DW_TAG_base_type: | |
8016 | return "DW_TAG_base_type"; | |
8017 | case DW_TAG_catch_block: | |
8018 | return "DW_TAG_catch_block"; | |
8019 | case DW_TAG_const_type: | |
8020 | return "DW_TAG_const_type"; | |
8021 | case DW_TAG_constant: | |
8022 | return "DW_TAG_constant"; | |
8023 | case DW_TAG_enumerator: | |
8024 | return "DW_TAG_enumerator"; | |
8025 | case DW_TAG_file_type: | |
8026 | return "DW_TAG_file_type"; | |
8027 | case DW_TAG_friend: | |
8028 | return "DW_TAG_friend"; | |
8029 | case DW_TAG_namelist: | |
8030 | return "DW_TAG_namelist"; | |
8031 | case DW_TAG_namelist_item: | |
8032 | return "DW_TAG_namelist_item"; | |
8033 | case DW_TAG_packed_type: | |
8034 | return "DW_TAG_packed_type"; | |
8035 | case DW_TAG_subprogram: | |
8036 | return "DW_TAG_subprogram"; | |
8037 | case DW_TAG_template_type_param: | |
8038 | return "DW_TAG_template_type_param"; | |
8039 | case DW_TAG_template_value_param: | |
8040 | return "DW_TAG_template_value_param"; | |
8041 | case DW_TAG_thrown_type: | |
8042 | return "DW_TAG_thrown_type"; | |
8043 | case DW_TAG_try_block: | |
8044 | return "DW_TAG_try_block"; | |
8045 | case DW_TAG_variant_part: | |
8046 | return "DW_TAG_variant_part"; | |
8047 | case DW_TAG_variable: | |
8048 | return "DW_TAG_variable"; | |
8049 | case DW_TAG_volatile_type: | |
8050 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
8051 | case DW_TAG_dwarf_procedure: |
8052 | return "DW_TAG_dwarf_procedure"; | |
8053 | case DW_TAG_restrict_type: | |
8054 | return "DW_TAG_restrict_type"; | |
8055 | case DW_TAG_interface_type: | |
8056 | return "DW_TAG_interface_type"; | |
8057 | case DW_TAG_namespace: | |
8058 | return "DW_TAG_namespace"; | |
8059 | case DW_TAG_imported_module: | |
8060 | return "DW_TAG_imported_module"; | |
8061 | case DW_TAG_unspecified_type: | |
8062 | return "DW_TAG_unspecified_type"; | |
8063 | case DW_TAG_partial_unit: | |
8064 | return "DW_TAG_partial_unit"; | |
8065 | case DW_TAG_imported_unit: | |
8066 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
8067 | case DW_TAG_condition: |
8068 | return "DW_TAG_condition"; | |
8069 | case DW_TAG_shared_type: | |
8070 | return "DW_TAG_shared_type"; | |
c906108c SS |
8071 | case DW_TAG_MIPS_loop: |
8072 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
8073 | case DW_TAG_HP_array_descriptor: |
8074 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
8075 | case DW_TAG_format_label: |
8076 | return "DW_TAG_format_label"; | |
8077 | case DW_TAG_function_template: | |
8078 | return "DW_TAG_function_template"; | |
8079 | case DW_TAG_class_template: | |
8080 | return "DW_TAG_class_template"; | |
b7619582 GF |
8081 | case DW_TAG_GNU_BINCL: |
8082 | return "DW_TAG_GNU_BINCL"; | |
8083 | case DW_TAG_GNU_EINCL: | |
8084 | return "DW_TAG_GNU_EINCL"; | |
8085 | case DW_TAG_upc_shared_type: | |
8086 | return "DW_TAG_upc_shared_type"; | |
8087 | case DW_TAG_upc_strict_type: | |
8088 | return "DW_TAG_upc_strict_type"; | |
8089 | case DW_TAG_upc_relaxed_type: | |
8090 | return "DW_TAG_upc_relaxed_type"; | |
8091 | case DW_TAG_PGI_kanji_type: | |
8092 | return "DW_TAG_PGI_kanji_type"; | |
8093 | case DW_TAG_PGI_interface_block: | |
8094 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
8095 | default: |
8096 | return "DW_TAG_<unknown>"; | |
8097 | } | |
8098 | } | |
8099 | ||
8100 | /* Convert a DWARF attribute code into its string name. */ | |
8101 | ||
8102 | static char * | |
aa1ee363 | 8103 | dwarf_attr_name (unsigned attr) |
c906108c SS |
8104 | { |
8105 | switch (attr) | |
8106 | { | |
8107 | case DW_AT_sibling: | |
8108 | return "DW_AT_sibling"; | |
8109 | case DW_AT_location: | |
8110 | return "DW_AT_location"; | |
8111 | case DW_AT_name: | |
8112 | return "DW_AT_name"; | |
8113 | case DW_AT_ordering: | |
8114 | return "DW_AT_ordering"; | |
8115 | case DW_AT_subscr_data: | |
8116 | return "DW_AT_subscr_data"; | |
8117 | case DW_AT_byte_size: | |
8118 | return "DW_AT_byte_size"; | |
8119 | case DW_AT_bit_offset: | |
8120 | return "DW_AT_bit_offset"; | |
8121 | case DW_AT_bit_size: | |
8122 | return "DW_AT_bit_size"; | |
8123 | case DW_AT_element_list: | |
8124 | return "DW_AT_element_list"; | |
8125 | case DW_AT_stmt_list: | |
8126 | return "DW_AT_stmt_list"; | |
8127 | case DW_AT_low_pc: | |
8128 | return "DW_AT_low_pc"; | |
8129 | case DW_AT_high_pc: | |
8130 | return "DW_AT_high_pc"; | |
8131 | case DW_AT_language: | |
8132 | return "DW_AT_language"; | |
8133 | case DW_AT_member: | |
8134 | return "DW_AT_member"; | |
8135 | case DW_AT_discr: | |
8136 | return "DW_AT_discr"; | |
8137 | case DW_AT_discr_value: | |
8138 | return "DW_AT_discr_value"; | |
8139 | case DW_AT_visibility: | |
8140 | return "DW_AT_visibility"; | |
8141 | case DW_AT_import: | |
8142 | return "DW_AT_import"; | |
8143 | case DW_AT_string_length: | |
8144 | return "DW_AT_string_length"; | |
8145 | case DW_AT_common_reference: | |
8146 | return "DW_AT_common_reference"; | |
8147 | case DW_AT_comp_dir: | |
8148 | return "DW_AT_comp_dir"; | |
8149 | case DW_AT_const_value: | |
8150 | return "DW_AT_const_value"; | |
8151 | case DW_AT_containing_type: | |
8152 | return "DW_AT_containing_type"; | |
8153 | case DW_AT_default_value: | |
8154 | return "DW_AT_default_value"; | |
8155 | case DW_AT_inline: | |
8156 | return "DW_AT_inline"; | |
8157 | case DW_AT_is_optional: | |
8158 | return "DW_AT_is_optional"; | |
8159 | case DW_AT_lower_bound: | |
8160 | return "DW_AT_lower_bound"; | |
8161 | case DW_AT_producer: | |
8162 | return "DW_AT_producer"; | |
8163 | case DW_AT_prototyped: | |
8164 | return "DW_AT_prototyped"; | |
8165 | case DW_AT_return_addr: | |
8166 | return "DW_AT_return_addr"; | |
8167 | case DW_AT_start_scope: | |
8168 | return "DW_AT_start_scope"; | |
09fa0d7c JK |
8169 | case DW_AT_bit_stride: |
8170 | return "DW_AT_bit_stride"; | |
c906108c SS |
8171 | case DW_AT_upper_bound: |
8172 | return "DW_AT_upper_bound"; | |
8173 | case DW_AT_abstract_origin: | |
8174 | return "DW_AT_abstract_origin"; | |
8175 | case DW_AT_accessibility: | |
8176 | return "DW_AT_accessibility"; | |
8177 | case DW_AT_address_class: | |
8178 | return "DW_AT_address_class"; | |
8179 | case DW_AT_artificial: | |
8180 | return "DW_AT_artificial"; | |
8181 | case DW_AT_base_types: | |
8182 | return "DW_AT_base_types"; | |
8183 | case DW_AT_calling_convention: | |
8184 | return "DW_AT_calling_convention"; | |
8185 | case DW_AT_count: | |
8186 | return "DW_AT_count"; | |
8187 | case DW_AT_data_member_location: | |
8188 | return "DW_AT_data_member_location"; | |
8189 | case DW_AT_decl_column: | |
8190 | return "DW_AT_decl_column"; | |
8191 | case DW_AT_decl_file: | |
8192 | return "DW_AT_decl_file"; | |
8193 | case DW_AT_decl_line: | |
8194 | return "DW_AT_decl_line"; | |
8195 | case DW_AT_declaration: | |
8196 | return "DW_AT_declaration"; | |
8197 | case DW_AT_discr_list: | |
8198 | return "DW_AT_discr_list"; | |
8199 | case DW_AT_encoding: | |
8200 | return "DW_AT_encoding"; | |
8201 | case DW_AT_external: | |
8202 | return "DW_AT_external"; | |
8203 | case DW_AT_frame_base: | |
8204 | return "DW_AT_frame_base"; | |
8205 | case DW_AT_friend: | |
8206 | return "DW_AT_friend"; | |
8207 | case DW_AT_identifier_case: | |
8208 | return "DW_AT_identifier_case"; | |
8209 | case DW_AT_macro_info: | |
8210 | return "DW_AT_macro_info"; | |
8211 | case DW_AT_namelist_items: | |
8212 | return "DW_AT_namelist_items"; | |
8213 | case DW_AT_priority: | |
8214 | return "DW_AT_priority"; | |
8215 | case DW_AT_segment: | |
8216 | return "DW_AT_segment"; | |
8217 | case DW_AT_specification: | |
8218 | return "DW_AT_specification"; | |
8219 | case DW_AT_static_link: | |
8220 | return "DW_AT_static_link"; | |
8221 | case DW_AT_type: | |
8222 | return "DW_AT_type"; | |
8223 | case DW_AT_use_location: | |
8224 | return "DW_AT_use_location"; | |
8225 | case DW_AT_variable_parameter: | |
8226 | return "DW_AT_variable_parameter"; | |
8227 | case DW_AT_virtuality: | |
8228 | return "DW_AT_virtuality"; | |
8229 | case DW_AT_vtable_elem_location: | |
8230 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 8231 | /* DWARF 3 values. */ |
d9fa45fe DC |
8232 | case DW_AT_allocated: |
8233 | return "DW_AT_allocated"; | |
8234 | case DW_AT_associated: | |
8235 | return "DW_AT_associated"; | |
8236 | case DW_AT_data_location: | |
8237 | return "DW_AT_data_location"; | |
09fa0d7c JK |
8238 | case DW_AT_byte_stride: |
8239 | return "DW_AT_byte_stride"; | |
d9fa45fe DC |
8240 | case DW_AT_entry_pc: |
8241 | return "DW_AT_entry_pc"; | |
8242 | case DW_AT_use_UTF8: | |
8243 | return "DW_AT_use_UTF8"; | |
8244 | case DW_AT_extension: | |
8245 | return "DW_AT_extension"; | |
8246 | case DW_AT_ranges: | |
8247 | return "DW_AT_ranges"; | |
8248 | case DW_AT_trampoline: | |
8249 | return "DW_AT_trampoline"; | |
8250 | case DW_AT_call_column: | |
8251 | return "DW_AT_call_column"; | |
8252 | case DW_AT_call_file: | |
8253 | return "DW_AT_call_file"; | |
8254 | case DW_AT_call_line: | |
8255 | return "DW_AT_call_line"; | |
b7619582 GF |
8256 | case DW_AT_description: |
8257 | return "DW_AT_description"; | |
8258 | case DW_AT_binary_scale: | |
8259 | return "DW_AT_binary_scale"; | |
8260 | case DW_AT_decimal_scale: | |
8261 | return "DW_AT_decimal_scale"; | |
8262 | case DW_AT_small: | |
8263 | return "DW_AT_small"; | |
8264 | case DW_AT_decimal_sign: | |
8265 | return "DW_AT_decimal_sign"; | |
8266 | case DW_AT_digit_count: | |
8267 | return "DW_AT_digit_count"; | |
8268 | case DW_AT_picture_string: | |
8269 | return "DW_AT_picture_string"; | |
8270 | case DW_AT_mutable: | |
8271 | return "DW_AT_mutable"; | |
8272 | case DW_AT_threads_scaled: | |
8273 | return "DW_AT_threads_scaled"; | |
8274 | case DW_AT_explicit: | |
8275 | return "DW_AT_explicit"; | |
8276 | case DW_AT_object_pointer: | |
8277 | return "DW_AT_object_pointer"; | |
8278 | case DW_AT_endianity: | |
8279 | return "DW_AT_endianity"; | |
8280 | case DW_AT_elemental: | |
8281 | return "DW_AT_elemental"; | |
8282 | case DW_AT_pure: | |
8283 | return "DW_AT_pure"; | |
8284 | case DW_AT_recursive: | |
8285 | return "DW_AT_recursive"; | |
c906108c | 8286 | #ifdef MIPS |
b7619582 | 8287 | /* SGI/MIPS extensions. */ |
c906108c SS |
8288 | case DW_AT_MIPS_fde: |
8289 | return "DW_AT_MIPS_fde"; | |
8290 | case DW_AT_MIPS_loop_begin: | |
8291 | return "DW_AT_MIPS_loop_begin"; | |
8292 | case DW_AT_MIPS_tail_loop_begin: | |
8293 | return "DW_AT_MIPS_tail_loop_begin"; | |
8294 | case DW_AT_MIPS_epilog_begin: | |
8295 | return "DW_AT_MIPS_epilog_begin"; | |
8296 | case DW_AT_MIPS_loop_unroll_factor: | |
8297 | return "DW_AT_MIPS_loop_unroll_factor"; | |
8298 | case DW_AT_MIPS_software_pipeline_depth: | |
8299 | return "DW_AT_MIPS_software_pipeline_depth"; | |
8300 | case DW_AT_MIPS_linkage_name: | |
8301 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
8302 | case DW_AT_MIPS_stride: |
8303 | return "DW_AT_MIPS_stride"; | |
8304 | case DW_AT_MIPS_abstract_name: | |
8305 | return "DW_AT_MIPS_abstract_name"; | |
8306 | case DW_AT_MIPS_clone_origin: | |
8307 | return "DW_AT_MIPS_clone_origin"; | |
8308 | case DW_AT_MIPS_has_inlines: | |
8309 | return "DW_AT_MIPS_has_inlines"; | |
8310 | #endif | |
8311 | /* HP extensions. */ | |
8312 | case DW_AT_HP_block_index: | |
8313 | return "DW_AT_HP_block_index"; | |
8314 | case DW_AT_HP_unmodifiable: | |
8315 | return "DW_AT_HP_unmodifiable"; | |
8316 | case DW_AT_HP_actuals_stmt_list: | |
8317 | return "DW_AT_HP_actuals_stmt_list"; | |
8318 | case DW_AT_HP_proc_per_section: | |
8319 | return "DW_AT_HP_proc_per_section"; | |
8320 | case DW_AT_HP_raw_data_ptr: | |
8321 | return "DW_AT_HP_raw_data_ptr"; | |
8322 | case DW_AT_HP_pass_by_reference: | |
8323 | return "DW_AT_HP_pass_by_reference"; | |
8324 | case DW_AT_HP_opt_level: | |
8325 | return "DW_AT_HP_opt_level"; | |
8326 | case DW_AT_HP_prof_version_id: | |
8327 | return "DW_AT_HP_prof_version_id"; | |
8328 | case DW_AT_HP_opt_flags: | |
8329 | return "DW_AT_HP_opt_flags"; | |
8330 | case DW_AT_HP_cold_region_low_pc: | |
8331 | return "DW_AT_HP_cold_region_low_pc"; | |
8332 | case DW_AT_HP_cold_region_high_pc: | |
8333 | return "DW_AT_HP_cold_region_high_pc"; | |
8334 | case DW_AT_HP_all_variables_modifiable: | |
8335 | return "DW_AT_HP_all_variables_modifiable"; | |
8336 | case DW_AT_HP_linkage_name: | |
8337 | return "DW_AT_HP_linkage_name"; | |
8338 | case DW_AT_HP_prof_flags: | |
8339 | return "DW_AT_HP_prof_flags"; | |
8340 | /* GNU extensions. */ | |
c906108c SS |
8341 | case DW_AT_sf_names: |
8342 | return "DW_AT_sf_names"; | |
8343 | case DW_AT_src_info: | |
8344 | return "DW_AT_src_info"; | |
8345 | case DW_AT_mac_info: | |
8346 | return "DW_AT_mac_info"; | |
8347 | case DW_AT_src_coords: | |
8348 | return "DW_AT_src_coords"; | |
8349 | case DW_AT_body_begin: | |
8350 | return "DW_AT_body_begin"; | |
8351 | case DW_AT_body_end: | |
8352 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
8353 | case DW_AT_GNU_vector: |
8354 | return "DW_AT_GNU_vector"; | |
b7619582 GF |
8355 | /* VMS extensions. */ |
8356 | case DW_AT_VMS_rtnbeg_pd_address: | |
8357 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
8358 | /* UPC extension. */ | |
8359 | case DW_AT_upc_threads_scaled: | |
8360 | return "DW_AT_upc_threads_scaled"; | |
8361 | /* PGI (STMicroelectronics) extensions. */ | |
8362 | case DW_AT_PGI_lbase: | |
8363 | return "DW_AT_PGI_lbase"; | |
8364 | case DW_AT_PGI_soffset: | |
8365 | return "DW_AT_PGI_soffset"; | |
8366 | case DW_AT_PGI_lstride: | |
8367 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
8368 | default: |
8369 | return "DW_AT_<unknown>"; | |
8370 | } | |
8371 | } | |
8372 | ||
8373 | /* Convert a DWARF value form code into its string name. */ | |
8374 | ||
8375 | static char * | |
aa1ee363 | 8376 | dwarf_form_name (unsigned form) |
c906108c SS |
8377 | { |
8378 | switch (form) | |
8379 | { | |
8380 | case DW_FORM_addr: | |
8381 | return "DW_FORM_addr"; | |
8382 | case DW_FORM_block2: | |
8383 | return "DW_FORM_block2"; | |
8384 | case DW_FORM_block4: | |
8385 | return "DW_FORM_block4"; | |
8386 | case DW_FORM_data2: | |
8387 | return "DW_FORM_data2"; | |
8388 | case DW_FORM_data4: | |
8389 | return "DW_FORM_data4"; | |
8390 | case DW_FORM_data8: | |
8391 | return "DW_FORM_data8"; | |
8392 | case DW_FORM_string: | |
8393 | return "DW_FORM_string"; | |
8394 | case DW_FORM_block: | |
8395 | return "DW_FORM_block"; | |
8396 | case DW_FORM_block1: | |
8397 | return "DW_FORM_block1"; | |
8398 | case DW_FORM_data1: | |
8399 | return "DW_FORM_data1"; | |
8400 | case DW_FORM_flag: | |
8401 | return "DW_FORM_flag"; | |
8402 | case DW_FORM_sdata: | |
8403 | return "DW_FORM_sdata"; | |
8404 | case DW_FORM_strp: | |
8405 | return "DW_FORM_strp"; | |
8406 | case DW_FORM_udata: | |
8407 | return "DW_FORM_udata"; | |
8408 | case DW_FORM_ref_addr: | |
8409 | return "DW_FORM_ref_addr"; | |
8410 | case DW_FORM_ref1: | |
8411 | return "DW_FORM_ref1"; | |
8412 | case DW_FORM_ref2: | |
8413 | return "DW_FORM_ref2"; | |
8414 | case DW_FORM_ref4: | |
8415 | return "DW_FORM_ref4"; | |
8416 | case DW_FORM_ref8: | |
8417 | return "DW_FORM_ref8"; | |
8418 | case DW_FORM_ref_udata: | |
8419 | return "DW_FORM_ref_udata"; | |
8420 | case DW_FORM_indirect: | |
8421 | return "DW_FORM_indirect"; | |
8422 | default: | |
8423 | return "DW_FORM_<unknown>"; | |
8424 | } | |
8425 | } | |
8426 | ||
8427 | /* Convert a DWARF stack opcode into its string name. */ | |
8428 | ||
8429 | static char * | |
aa1ee363 | 8430 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
8431 | { |
8432 | switch (op) | |
8433 | { | |
8434 | case DW_OP_addr: | |
8435 | return "DW_OP_addr"; | |
8436 | case DW_OP_deref: | |
8437 | return "DW_OP_deref"; | |
8438 | case DW_OP_const1u: | |
8439 | return "DW_OP_const1u"; | |
8440 | case DW_OP_const1s: | |
8441 | return "DW_OP_const1s"; | |
8442 | case DW_OP_const2u: | |
8443 | return "DW_OP_const2u"; | |
8444 | case DW_OP_const2s: | |
8445 | return "DW_OP_const2s"; | |
8446 | case DW_OP_const4u: | |
8447 | return "DW_OP_const4u"; | |
8448 | case DW_OP_const4s: | |
8449 | return "DW_OP_const4s"; | |
8450 | case DW_OP_const8u: | |
8451 | return "DW_OP_const8u"; | |
8452 | case DW_OP_const8s: | |
8453 | return "DW_OP_const8s"; | |
8454 | case DW_OP_constu: | |
8455 | return "DW_OP_constu"; | |
8456 | case DW_OP_consts: | |
8457 | return "DW_OP_consts"; | |
8458 | case DW_OP_dup: | |
8459 | return "DW_OP_dup"; | |
8460 | case DW_OP_drop: | |
8461 | return "DW_OP_drop"; | |
8462 | case DW_OP_over: | |
8463 | return "DW_OP_over"; | |
8464 | case DW_OP_pick: | |
8465 | return "DW_OP_pick"; | |
8466 | case DW_OP_swap: | |
8467 | return "DW_OP_swap"; | |
8468 | case DW_OP_rot: | |
8469 | return "DW_OP_rot"; | |
8470 | case DW_OP_xderef: | |
8471 | return "DW_OP_xderef"; | |
8472 | case DW_OP_abs: | |
8473 | return "DW_OP_abs"; | |
8474 | case DW_OP_and: | |
8475 | return "DW_OP_and"; | |
8476 | case DW_OP_div: | |
8477 | return "DW_OP_div"; | |
8478 | case DW_OP_minus: | |
8479 | return "DW_OP_minus"; | |
8480 | case DW_OP_mod: | |
8481 | return "DW_OP_mod"; | |
8482 | case DW_OP_mul: | |
8483 | return "DW_OP_mul"; | |
8484 | case DW_OP_neg: | |
8485 | return "DW_OP_neg"; | |
8486 | case DW_OP_not: | |
8487 | return "DW_OP_not"; | |
8488 | case DW_OP_or: | |
8489 | return "DW_OP_or"; | |
8490 | case DW_OP_plus: | |
8491 | return "DW_OP_plus"; | |
8492 | case DW_OP_plus_uconst: | |
8493 | return "DW_OP_plus_uconst"; | |
8494 | case DW_OP_shl: | |
8495 | return "DW_OP_shl"; | |
8496 | case DW_OP_shr: | |
8497 | return "DW_OP_shr"; | |
8498 | case DW_OP_shra: | |
8499 | return "DW_OP_shra"; | |
8500 | case DW_OP_xor: | |
8501 | return "DW_OP_xor"; | |
8502 | case DW_OP_bra: | |
8503 | return "DW_OP_bra"; | |
8504 | case DW_OP_eq: | |
8505 | return "DW_OP_eq"; | |
8506 | case DW_OP_ge: | |
8507 | return "DW_OP_ge"; | |
8508 | case DW_OP_gt: | |
8509 | return "DW_OP_gt"; | |
8510 | case DW_OP_le: | |
8511 | return "DW_OP_le"; | |
8512 | case DW_OP_lt: | |
8513 | return "DW_OP_lt"; | |
8514 | case DW_OP_ne: | |
8515 | return "DW_OP_ne"; | |
8516 | case DW_OP_skip: | |
8517 | return "DW_OP_skip"; | |
8518 | case DW_OP_lit0: | |
8519 | return "DW_OP_lit0"; | |
8520 | case DW_OP_lit1: | |
8521 | return "DW_OP_lit1"; | |
8522 | case DW_OP_lit2: | |
8523 | return "DW_OP_lit2"; | |
8524 | case DW_OP_lit3: | |
8525 | return "DW_OP_lit3"; | |
8526 | case DW_OP_lit4: | |
8527 | return "DW_OP_lit4"; | |
8528 | case DW_OP_lit5: | |
8529 | return "DW_OP_lit5"; | |
8530 | case DW_OP_lit6: | |
8531 | return "DW_OP_lit6"; | |
8532 | case DW_OP_lit7: | |
8533 | return "DW_OP_lit7"; | |
8534 | case DW_OP_lit8: | |
8535 | return "DW_OP_lit8"; | |
8536 | case DW_OP_lit9: | |
8537 | return "DW_OP_lit9"; | |
8538 | case DW_OP_lit10: | |
8539 | return "DW_OP_lit10"; | |
8540 | case DW_OP_lit11: | |
8541 | return "DW_OP_lit11"; | |
8542 | case DW_OP_lit12: | |
8543 | return "DW_OP_lit12"; | |
8544 | case DW_OP_lit13: | |
8545 | return "DW_OP_lit13"; | |
8546 | case DW_OP_lit14: | |
8547 | return "DW_OP_lit14"; | |
8548 | case DW_OP_lit15: | |
8549 | return "DW_OP_lit15"; | |
8550 | case DW_OP_lit16: | |
8551 | return "DW_OP_lit16"; | |
8552 | case DW_OP_lit17: | |
8553 | return "DW_OP_lit17"; | |
8554 | case DW_OP_lit18: | |
8555 | return "DW_OP_lit18"; | |
8556 | case DW_OP_lit19: | |
8557 | return "DW_OP_lit19"; | |
8558 | case DW_OP_lit20: | |
8559 | return "DW_OP_lit20"; | |
8560 | case DW_OP_lit21: | |
8561 | return "DW_OP_lit21"; | |
8562 | case DW_OP_lit22: | |
8563 | return "DW_OP_lit22"; | |
8564 | case DW_OP_lit23: | |
8565 | return "DW_OP_lit23"; | |
8566 | case DW_OP_lit24: | |
8567 | return "DW_OP_lit24"; | |
8568 | case DW_OP_lit25: | |
8569 | return "DW_OP_lit25"; | |
8570 | case DW_OP_lit26: | |
8571 | return "DW_OP_lit26"; | |
8572 | case DW_OP_lit27: | |
8573 | return "DW_OP_lit27"; | |
8574 | case DW_OP_lit28: | |
8575 | return "DW_OP_lit28"; | |
8576 | case DW_OP_lit29: | |
8577 | return "DW_OP_lit29"; | |
8578 | case DW_OP_lit30: | |
8579 | return "DW_OP_lit30"; | |
8580 | case DW_OP_lit31: | |
8581 | return "DW_OP_lit31"; | |
8582 | case DW_OP_reg0: | |
8583 | return "DW_OP_reg0"; | |
8584 | case DW_OP_reg1: | |
8585 | return "DW_OP_reg1"; | |
8586 | case DW_OP_reg2: | |
8587 | return "DW_OP_reg2"; | |
8588 | case DW_OP_reg3: | |
8589 | return "DW_OP_reg3"; | |
8590 | case DW_OP_reg4: | |
8591 | return "DW_OP_reg4"; | |
8592 | case DW_OP_reg5: | |
8593 | return "DW_OP_reg5"; | |
8594 | case DW_OP_reg6: | |
8595 | return "DW_OP_reg6"; | |
8596 | case DW_OP_reg7: | |
8597 | return "DW_OP_reg7"; | |
8598 | case DW_OP_reg8: | |
8599 | return "DW_OP_reg8"; | |
8600 | case DW_OP_reg9: | |
8601 | return "DW_OP_reg9"; | |
8602 | case DW_OP_reg10: | |
8603 | return "DW_OP_reg10"; | |
8604 | case DW_OP_reg11: | |
8605 | return "DW_OP_reg11"; | |
8606 | case DW_OP_reg12: | |
8607 | return "DW_OP_reg12"; | |
8608 | case DW_OP_reg13: | |
8609 | return "DW_OP_reg13"; | |
8610 | case DW_OP_reg14: | |
8611 | return "DW_OP_reg14"; | |
8612 | case DW_OP_reg15: | |
8613 | return "DW_OP_reg15"; | |
8614 | case DW_OP_reg16: | |
8615 | return "DW_OP_reg16"; | |
8616 | case DW_OP_reg17: | |
8617 | return "DW_OP_reg17"; | |
8618 | case DW_OP_reg18: | |
8619 | return "DW_OP_reg18"; | |
8620 | case DW_OP_reg19: | |
8621 | return "DW_OP_reg19"; | |
8622 | case DW_OP_reg20: | |
8623 | return "DW_OP_reg20"; | |
8624 | case DW_OP_reg21: | |
8625 | return "DW_OP_reg21"; | |
8626 | case DW_OP_reg22: | |
8627 | return "DW_OP_reg22"; | |
8628 | case DW_OP_reg23: | |
8629 | return "DW_OP_reg23"; | |
8630 | case DW_OP_reg24: | |
8631 | return "DW_OP_reg24"; | |
8632 | case DW_OP_reg25: | |
8633 | return "DW_OP_reg25"; | |
8634 | case DW_OP_reg26: | |
8635 | return "DW_OP_reg26"; | |
8636 | case DW_OP_reg27: | |
8637 | return "DW_OP_reg27"; | |
8638 | case DW_OP_reg28: | |
8639 | return "DW_OP_reg28"; | |
8640 | case DW_OP_reg29: | |
8641 | return "DW_OP_reg29"; | |
8642 | case DW_OP_reg30: | |
8643 | return "DW_OP_reg30"; | |
8644 | case DW_OP_reg31: | |
8645 | return "DW_OP_reg31"; | |
8646 | case DW_OP_breg0: | |
8647 | return "DW_OP_breg0"; | |
8648 | case DW_OP_breg1: | |
8649 | return "DW_OP_breg1"; | |
8650 | case DW_OP_breg2: | |
8651 | return "DW_OP_breg2"; | |
8652 | case DW_OP_breg3: | |
8653 | return "DW_OP_breg3"; | |
8654 | case DW_OP_breg4: | |
8655 | return "DW_OP_breg4"; | |
8656 | case DW_OP_breg5: | |
8657 | return "DW_OP_breg5"; | |
8658 | case DW_OP_breg6: | |
8659 | return "DW_OP_breg6"; | |
8660 | case DW_OP_breg7: | |
8661 | return "DW_OP_breg7"; | |
8662 | case DW_OP_breg8: | |
8663 | return "DW_OP_breg8"; | |
8664 | case DW_OP_breg9: | |
8665 | return "DW_OP_breg9"; | |
8666 | case DW_OP_breg10: | |
8667 | return "DW_OP_breg10"; | |
8668 | case DW_OP_breg11: | |
8669 | return "DW_OP_breg11"; | |
8670 | case DW_OP_breg12: | |
8671 | return "DW_OP_breg12"; | |
8672 | case DW_OP_breg13: | |
8673 | return "DW_OP_breg13"; | |
8674 | case DW_OP_breg14: | |
8675 | return "DW_OP_breg14"; | |
8676 | case DW_OP_breg15: | |
8677 | return "DW_OP_breg15"; | |
8678 | case DW_OP_breg16: | |
8679 | return "DW_OP_breg16"; | |
8680 | case DW_OP_breg17: | |
8681 | return "DW_OP_breg17"; | |
8682 | case DW_OP_breg18: | |
8683 | return "DW_OP_breg18"; | |
8684 | case DW_OP_breg19: | |
8685 | return "DW_OP_breg19"; | |
8686 | case DW_OP_breg20: | |
8687 | return "DW_OP_breg20"; | |
8688 | case DW_OP_breg21: | |
8689 | return "DW_OP_breg21"; | |
8690 | case DW_OP_breg22: | |
8691 | return "DW_OP_breg22"; | |
8692 | case DW_OP_breg23: | |
8693 | return "DW_OP_breg23"; | |
8694 | case DW_OP_breg24: | |
8695 | return "DW_OP_breg24"; | |
8696 | case DW_OP_breg25: | |
8697 | return "DW_OP_breg25"; | |
8698 | case DW_OP_breg26: | |
8699 | return "DW_OP_breg26"; | |
8700 | case DW_OP_breg27: | |
8701 | return "DW_OP_breg27"; | |
8702 | case DW_OP_breg28: | |
8703 | return "DW_OP_breg28"; | |
8704 | case DW_OP_breg29: | |
8705 | return "DW_OP_breg29"; | |
8706 | case DW_OP_breg30: | |
8707 | return "DW_OP_breg30"; | |
8708 | case DW_OP_breg31: | |
8709 | return "DW_OP_breg31"; | |
8710 | case DW_OP_regx: | |
8711 | return "DW_OP_regx"; | |
8712 | case DW_OP_fbreg: | |
8713 | return "DW_OP_fbreg"; | |
8714 | case DW_OP_bregx: | |
8715 | return "DW_OP_bregx"; | |
8716 | case DW_OP_piece: | |
8717 | return "DW_OP_piece"; | |
8718 | case DW_OP_deref_size: | |
8719 | return "DW_OP_deref_size"; | |
8720 | case DW_OP_xderef_size: | |
8721 | return "DW_OP_xderef_size"; | |
8722 | case DW_OP_nop: | |
8723 | return "DW_OP_nop"; | |
b7619582 | 8724 | /* DWARF 3 extensions. */ |
ed348acc EZ |
8725 | case DW_OP_push_object_address: |
8726 | return "DW_OP_push_object_address"; | |
8727 | case DW_OP_call2: | |
8728 | return "DW_OP_call2"; | |
8729 | case DW_OP_call4: | |
8730 | return "DW_OP_call4"; | |
8731 | case DW_OP_call_ref: | |
8732 | return "DW_OP_call_ref"; | |
b7619582 GF |
8733 | /* GNU extensions. */ |
8734 | case DW_OP_form_tls_address: | |
8735 | return "DW_OP_form_tls_address"; | |
8736 | case DW_OP_call_frame_cfa: | |
8737 | return "DW_OP_call_frame_cfa"; | |
8738 | case DW_OP_bit_piece: | |
8739 | return "DW_OP_bit_piece"; | |
ed348acc EZ |
8740 | case DW_OP_GNU_push_tls_address: |
8741 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
8742 | case DW_OP_GNU_uninit: |
8743 | return "DW_OP_GNU_uninit"; | |
b7619582 GF |
8744 | /* HP extensions. */ |
8745 | case DW_OP_HP_is_value: | |
8746 | return "DW_OP_HP_is_value"; | |
8747 | case DW_OP_HP_fltconst4: | |
8748 | return "DW_OP_HP_fltconst4"; | |
8749 | case DW_OP_HP_fltconst8: | |
8750 | return "DW_OP_HP_fltconst8"; | |
8751 | case DW_OP_HP_mod_range: | |
8752 | return "DW_OP_HP_mod_range"; | |
8753 | case DW_OP_HP_unmod_range: | |
8754 | return "DW_OP_HP_unmod_range"; | |
8755 | case DW_OP_HP_tls: | |
8756 | return "DW_OP_HP_tls"; | |
c906108c SS |
8757 | default: |
8758 | return "OP_<unknown>"; | |
8759 | } | |
8760 | } | |
8761 | ||
8762 | static char * | |
fba45db2 | 8763 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
8764 | { |
8765 | if (mybool) | |
8766 | return "TRUE"; | |
8767 | else | |
8768 | return "FALSE"; | |
8769 | } | |
8770 | ||
8771 | /* Convert a DWARF type code into its string name. */ | |
8772 | ||
8773 | static char * | |
aa1ee363 | 8774 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
8775 | { |
8776 | switch (enc) | |
8777 | { | |
b7619582 GF |
8778 | case DW_ATE_void: |
8779 | return "DW_ATE_void"; | |
c906108c SS |
8780 | case DW_ATE_address: |
8781 | return "DW_ATE_address"; | |
8782 | case DW_ATE_boolean: | |
8783 | return "DW_ATE_boolean"; | |
8784 | case DW_ATE_complex_float: | |
8785 | return "DW_ATE_complex_float"; | |
8786 | case DW_ATE_float: | |
8787 | return "DW_ATE_float"; | |
8788 | case DW_ATE_signed: | |
8789 | return "DW_ATE_signed"; | |
8790 | case DW_ATE_signed_char: | |
8791 | return "DW_ATE_signed_char"; | |
8792 | case DW_ATE_unsigned: | |
8793 | return "DW_ATE_unsigned"; | |
8794 | case DW_ATE_unsigned_char: | |
8795 | return "DW_ATE_unsigned_char"; | |
b7619582 | 8796 | /* DWARF 3. */ |
d9fa45fe DC |
8797 | case DW_ATE_imaginary_float: |
8798 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
8799 | case DW_ATE_packed_decimal: |
8800 | return "DW_ATE_packed_decimal"; | |
8801 | case DW_ATE_numeric_string: | |
8802 | return "DW_ATE_numeric_string"; | |
8803 | case DW_ATE_edited: | |
8804 | return "DW_ATE_edited"; | |
8805 | case DW_ATE_signed_fixed: | |
8806 | return "DW_ATE_signed_fixed"; | |
8807 | case DW_ATE_unsigned_fixed: | |
8808 | return "DW_ATE_unsigned_fixed"; | |
8809 | case DW_ATE_decimal_float: | |
8810 | return "DW_ATE_decimal_float"; | |
8811 | /* HP extensions. */ | |
8812 | case DW_ATE_HP_float80: | |
8813 | return "DW_ATE_HP_float80"; | |
8814 | case DW_ATE_HP_complex_float80: | |
8815 | return "DW_ATE_HP_complex_float80"; | |
8816 | case DW_ATE_HP_float128: | |
8817 | return "DW_ATE_HP_float128"; | |
8818 | case DW_ATE_HP_complex_float128: | |
8819 | return "DW_ATE_HP_complex_float128"; | |
8820 | case DW_ATE_HP_floathpintel: | |
8821 | return "DW_ATE_HP_floathpintel"; | |
8822 | case DW_ATE_HP_imaginary_float80: | |
8823 | return "DW_ATE_HP_imaginary_float80"; | |
8824 | case DW_ATE_HP_imaginary_float128: | |
8825 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
8826 | default: |
8827 | return "DW_ATE_<unknown>"; | |
8828 | } | |
8829 | } | |
8830 | ||
8831 | /* Convert a DWARF call frame info operation to its string name. */ | |
8832 | ||
8833 | #if 0 | |
8834 | static char * | |
aa1ee363 | 8835 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
8836 | { |
8837 | switch (cfi_opc) | |
8838 | { | |
8839 | case DW_CFA_advance_loc: | |
8840 | return "DW_CFA_advance_loc"; | |
8841 | case DW_CFA_offset: | |
8842 | return "DW_CFA_offset"; | |
8843 | case DW_CFA_restore: | |
8844 | return "DW_CFA_restore"; | |
8845 | case DW_CFA_nop: | |
8846 | return "DW_CFA_nop"; | |
8847 | case DW_CFA_set_loc: | |
8848 | return "DW_CFA_set_loc"; | |
8849 | case DW_CFA_advance_loc1: | |
8850 | return "DW_CFA_advance_loc1"; | |
8851 | case DW_CFA_advance_loc2: | |
8852 | return "DW_CFA_advance_loc2"; | |
8853 | case DW_CFA_advance_loc4: | |
8854 | return "DW_CFA_advance_loc4"; | |
8855 | case DW_CFA_offset_extended: | |
8856 | return "DW_CFA_offset_extended"; | |
8857 | case DW_CFA_restore_extended: | |
8858 | return "DW_CFA_restore_extended"; | |
8859 | case DW_CFA_undefined: | |
8860 | return "DW_CFA_undefined"; | |
8861 | case DW_CFA_same_value: | |
8862 | return "DW_CFA_same_value"; | |
8863 | case DW_CFA_register: | |
8864 | return "DW_CFA_register"; | |
8865 | case DW_CFA_remember_state: | |
8866 | return "DW_CFA_remember_state"; | |
8867 | case DW_CFA_restore_state: | |
8868 | return "DW_CFA_restore_state"; | |
8869 | case DW_CFA_def_cfa: | |
8870 | return "DW_CFA_def_cfa"; | |
8871 | case DW_CFA_def_cfa_register: | |
8872 | return "DW_CFA_def_cfa_register"; | |
8873 | case DW_CFA_def_cfa_offset: | |
8874 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 8875 | /* DWARF 3. */ |
985cb1a3 JM |
8876 | case DW_CFA_def_cfa_expression: |
8877 | return "DW_CFA_def_cfa_expression"; | |
8878 | case DW_CFA_expression: | |
8879 | return "DW_CFA_expression"; | |
8880 | case DW_CFA_offset_extended_sf: | |
8881 | return "DW_CFA_offset_extended_sf"; | |
8882 | case DW_CFA_def_cfa_sf: | |
8883 | return "DW_CFA_def_cfa_sf"; | |
8884 | case DW_CFA_def_cfa_offset_sf: | |
8885 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
8886 | case DW_CFA_val_offset: |
8887 | return "DW_CFA_val_offset"; | |
8888 | case DW_CFA_val_offset_sf: | |
8889 | return "DW_CFA_val_offset_sf"; | |
8890 | case DW_CFA_val_expression: | |
8891 | return "DW_CFA_val_expression"; | |
8892 | /* SGI/MIPS specific. */ | |
c906108c SS |
8893 | case DW_CFA_MIPS_advance_loc8: |
8894 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 8895 | /* GNU extensions. */ |
985cb1a3 JM |
8896 | case DW_CFA_GNU_window_save: |
8897 | return "DW_CFA_GNU_window_save"; | |
8898 | case DW_CFA_GNU_args_size: | |
8899 | return "DW_CFA_GNU_args_size"; | |
8900 | case DW_CFA_GNU_negative_offset_extended: | |
8901 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
8902 | default: |
8903 | return "DW_CFA_<unknown>"; | |
8904 | } | |
8905 | } | |
8906 | #endif | |
8907 | ||
f9aca02d | 8908 | static void |
fba45db2 | 8909 | dump_die (struct die_info *die) |
c906108c SS |
8910 | { |
8911 | unsigned int i; | |
8912 | ||
48cd0caa | 8913 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 8914 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 8915 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 8916 | dwarf_bool_name (die->child != NULL)); |
c906108c | 8917 | |
48cd0caa | 8918 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
8919 | for (i = 0; i < die->num_attrs; ++i) |
8920 | { | |
48cd0caa | 8921 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
8922 | dwarf_attr_name (die->attrs[i].name), |
8923 | dwarf_form_name (die->attrs[i].form)); | |
8924 | switch (die->attrs[i].form) | |
8925 | { | |
8926 | case DW_FORM_ref_addr: | |
8927 | case DW_FORM_addr: | |
48cd0caa | 8928 | fprintf_unfiltered (gdb_stderr, "address: "); |
66bf4b3a | 8929 | deprecated_print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr); |
c906108c SS |
8930 | break; |
8931 | case DW_FORM_block2: | |
8932 | case DW_FORM_block4: | |
8933 | case DW_FORM_block: | |
8934 | case DW_FORM_block1: | |
48cd0caa | 8935 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 8936 | break; |
10b3939b DJ |
8937 | case DW_FORM_ref1: |
8938 | case DW_FORM_ref2: | |
8939 | case DW_FORM_ref4: | |
8940 | fprintf_unfiltered (gdb_stderr, "constant ref: %ld (adjusted)", | |
8941 | (long) (DW_ADDR (&die->attrs[i]))); | |
8942 | break; | |
c906108c SS |
8943 | case DW_FORM_data1: |
8944 | case DW_FORM_data2: | |
8945 | case DW_FORM_data4: | |
ce5d95e1 | 8946 | case DW_FORM_data8: |
c906108c SS |
8947 | case DW_FORM_udata: |
8948 | case DW_FORM_sdata: | |
48cd0caa | 8949 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
8950 | break; |
8951 | case DW_FORM_string: | |
4bdf3d34 | 8952 | case DW_FORM_strp: |
48cd0caa | 8953 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 8954 | DW_STRING (&die->attrs[i]) |
c5aa993b | 8955 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
8956 | break; |
8957 | case DW_FORM_flag: | |
8958 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 8959 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 8960 | else |
48cd0caa | 8961 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 8962 | break; |
a8329558 KW |
8963 | case DW_FORM_indirect: |
8964 | /* the reader will have reduced the indirect form to | |
8965 | the "base form" so this form should not occur */ | |
48cd0caa | 8966 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 8967 | break; |
c906108c | 8968 | default: |
48cd0caa | 8969 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 8970 | die->attrs[i].form); |
c906108c | 8971 | } |
48cd0caa | 8972 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
8973 | } |
8974 | } | |
8975 | ||
f9aca02d | 8976 | static void |
fba45db2 | 8977 | dump_die_list (struct die_info *die) |
c906108c SS |
8978 | { |
8979 | while (die) | |
8980 | { | |
8981 | dump_die (die); | |
639d11d3 DC |
8982 | if (die->child != NULL) |
8983 | dump_die_list (die->child); | |
8984 | if (die->sibling != NULL) | |
8985 | dump_die_list (die->sibling); | |
c906108c SS |
8986 | } |
8987 | } | |
8988 | ||
f9aca02d | 8989 | static void |
10b3939b DJ |
8990 | store_in_ref_table (unsigned int offset, struct die_info *die, |
8991 | struct dwarf2_cu *cu) | |
c906108c SS |
8992 | { |
8993 | int h; | |
8994 | struct die_info *old; | |
8995 | ||
8996 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8997 | old = cu->die_ref_table[h]; |
c906108c | 8998 | die->next_ref = old; |
10b3939b | 8999 | cu->die_ref_table[h] = die; |
c906108c SS |
9000 | } |
9001 | ||
9002 | static unsigned int | |
e142c38c | 9003 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
9004 | { |
9005 | unsigned int result = 0; | |
9006 | ||
9007 | switch (attr->form) | |
9008 | { | |
9009 | case DW_FORM_ref_addr: | |
c906108c SS |
9010 | case DW_FORM_ref1: |
9011 | case DW_FORM_ref2: | |
9012 | case DW_FORM_ref4: | |
613e1657 | 9013 | case DW_FORM_ref8: |
c906108c | 9014 | case DW_FORM_ref_udata: |
10b3939b | 9015 | result = DW_ADDR (attr); |
c906108c SS |
9016 | break; |
9017 | default: | |
4d3c2250 | 9018 | complaint (&symfile_complaints, |
e2e0b3e5 | 9019 | _("unsupported die ref attribute form: '%s'"), |
4d3c2250 | 9020 | dwarf_form_name (attr->form)); |
c906108c SS |
9021 | } |
9022 | return result; | |
9023 | } | |
9024 | ||
a02abb62 JB |
9025 | /* Return the constant value held by the given attribute. Return -1 |
9026 | if the value held by the attribute is not constant. */ | |
9027 | ||
9028 | static int | |
9029 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
9030 | { | |
9031 | if (attr->form == DW_FORM_sdata) | |
9032 | return DW_SND (attr); | |
9033 | else if (attr->form == DW_FORM_udata | |
9034 | || attr->form == DW_FORM_data1 | |
9035 | || attr->form == DW_FORM_data2 | |
9036 | || attr->form == DW_FORM_data4 | |
9037 | || attr->form == DW_FORM_data8) | |
9038 | return DW_UNSND (attr); | |
9039 | else | |
9040 | { | |
e2e0b3e5 | 9041 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
9042 | dwarf_form_name (attr->form)); |
9043 | return default_value; | |
9044 | } | |
9045 | } | |
9046 | ||
f9aca02d | 9047 | static struct die_info * |
10b3939b DJ |
9048 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
9049 | struct dwarf2_cu *cu) | |
c906108c SS |
9050 | { |
9051 | struct die_info *die; | |
10b3939b | 9052 | unsigned int offset; |
c906108c | 9053 | int h; |
10b3939b DJ |
9054 | struct die_info temp_die; |
9055 | struct dwarf2_cu *target_cu; | |
9056 | ||
9057 | offset = dwarf2_get_ref_die_offset (attr, cu); | |
9058 | ||
9059 | if (DW_ADDR (attr) < cu->header.offset | |
9060 | || DW_ADDR (attr) >= cu->header.offset + cu->header.length) | |
9061 | { | |
9062 | struct dwarf2_per_cu_data *per_cu; | |
9063 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (attr), | |
9064 | cu->objfile); | |
9065 | target_cu = per_cu->cu; | |
9066 | } | |
9067 | else | |
9068 | target_cu = cu; | |
c906108c SS |
9069 | |
9070 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 9071 | die = target_cu->die_ref_table[h]; |
c906108c SS |
9072 | while (die) |
9073 | { | |
9074 | if (die->offset == offset) | |
10b3939b | 9075 | return die; |
c906108c SS |
9076 | die = die->next_ref; |
9077 | } | |
10b3939b | 9078 | |
8a3fe4f8 AC |
9079 | error (_("Dwarf Error: Cannot find DIE at 0x%lx referenced from DIE " |
9080 | "at 0x%lx [in module %s]"), | |
10b3939b DJ |
9081 | (long) src_die->offset, (long) offset, cu->objfile->name); |
9082 | ||
c906108c SS |
9083 | return NULL; |
9084 | } | |
9085 | ||
c906108c SS |
9086 | /* Decode simple location descriptions. |
9087 | Given a pointer to a dwarf block that defines a location, compute | |
9088 | the location and return the value. | |
9089 | ||
4cecd739 DJ |
9090 | NOTE drow/2003-11-18: This function is called in two situations |
9091 | now: for the address of static or global variables (partial symbols | |
9092 | only) and for offsets into structures which are expected to be | |
9093 | (more or less) constant. The partial symbol case should go away, | |
9094 | and only the constant case should remain. That will let this | |
9095 | function complain more accurately. A few special modes are allowed | |
9096 | without complaint for global variables (for instance, global | |
9097 | register values and thread-local values). | |
c906108c SS |
9098 | |
9099 | A location description containing no operations indicates that the | |
4cecd739 | 9100 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
9101 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
9102 | callers will only want a very basic result and this can become a | |
9103 | complaint. | |
c906108c | 9104 | |
c906108c SS |
9105 | Note that stack[0] is unused except as a default error return. |
9106 | Note that stack overflow is not yet handled. */ | |
9107 | ||
9108 | static CORE_ADDR | |
e7c27a73 | 9109 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 9110 | { |
e7c27a73 DJ |
9111 | struct objfile *objfile = cu->objfile; |
9112 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
9113 | int i; |
9114 | int size = blk->size; | |
fe1b8b76 | 9115 | gdb_byte *data = blk->data; |
c906108c SS |
9116 | CORE_ADDR stack[64]; |
9117 | int stacki; | |
9118 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 9119 | gdb_byte op; |
c906108c SS |
9120 | |
9121 | i = 0; | |
9122 | stacki = 0; | |
9123 | stack[stacki] = 0; | |
c906108c SS |
9124 | |
9125 | while (i < size) | |
9126 | { | |
c906108c SS |
9127 | op = data[i++]; |
9128 | switch (op) | |
9129 | { | |
f1bea926 JM |
9130 | case DW_OP_lit0: |
9131 | case DW_OP_lit1: | |
9132 | case DW_OP_lit2: | |
9133 | case DW_OP_lit3: | |
9134 | case DW_OP_lit4: | |
9135 | case DW_OP_lit5: | |
9136 | case DW_OP_lit6: | |
9137 | case DW_OP_lit7: | |
9138 | case DW_OP_lit8: | |
9139 | case DW_OP_lit9: | |
9140 | case DW_OP_lit10: | |
9141 | case DW_OP_lit11: | |
9142 | case DW_OP_lit12: | |
9143 | case DW_OP_lit13: | |
9144 | case DW_OP_lit14: | |
9145 | case DW_OP_lit15: | |
9146 | case DW_OP_lit16: | |
9147 | case DW_OP_lit17: | |
9148 | case DW_OP_lit18: | |
9149 | case DW_OP_lit19: | |
9150 | case DW_OP_lit20: | |
9151 | case DW_OP_lit21: | |
9152 | case DW_OP_lit22: | |
9153 | case DW_OP_lit23: | |
9154 | case DW_OP_lit24: | |
9155 | case DW_OP_lit25: | |
9156 | case DW_OP_lit26: | |
9157 | case DW_OP_lit27: | |
9158 | case DW_OP_lit28: | |
9159 | case DW_OP_lit29: | |
9160 | case DW_OP_lit30: | |
9161 | case DW_OP_lit31: | |
9162 | stack[++stacki] = op - DW_OP_lit0; | |
9163 | break; | |
9164 | ||
c906108c SS |
9165 | case DW_OP_reg0: |
9166 | case DW_OP_reg1: | |
9167 | case DW_OP_reg2: | |
9168 | case DW_OP_reg3: | |
9169 | case DW_OP_reg4: | |
9170 | case DW_OP_reg5: | |
9171 | case DW_OP_reg6: | |
9172 | case DW_OP_reg7: | |
9173 | case DW_OP_reg8: | |
9174 | case DW_OP_reg9: | |
9175 | case DW_OP_reg10: | |
9176 | case DW_OP_reg11: | |
9177 | case DW_OP_reg12: | |
9178 | case DW_OP_reg13: | |
9179 | case DW_OP_reg14: | |
9180 | case DW_OP_reg15: | |
9181 | case DW_OP_reg16: | |
9182 | case DW_OP_reg17: | |
9183 | case DW_OP_reg18: | |
9184 | case DW_OP_reg19: | |
9185 | case DW_OP_reg20: | |
9186 | case DW_OP_reg21: | |
9187 | case DW_OP_reg22: | |
9188 | case DW_OP_reg23: | |
9189 | case DW_OP_reg24: | |
9190 | case DW_OP_reg25: | |
9191 | case DW_OP_reg26: | |
9192 | case DW_OP_reg27: | |
9193 | case DW_OP_reg28: | |
9194 | case DW_OP_reg29: | |
9195 | case DW_OP_reg30: | |
9196 | case DW_OP_reg31: | |
c906108c | 9197 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
9198 | if (i < size) |
9199 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9200 | break; |
9201 | ||
9202 | case DW_OP_regx: | |
c906108c SS |
9203 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
9204 | i += bytes_read; | |
c906108c | 9205 | stack[++stacki] = unsnd; |
4cecd739 DJ |
9206 | if (i < size) |
9207 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9208 | break; |
9209 | ||
9210 | case DW_OP_addr: | |
107d2387 | 9211 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 9212 | cu, &bytes_read); |
107d2387 | 9213 | i += bytes_read; |
c906108c SS |
9214 | break; |
9215 | ||
9216 | case DW_OP_const1u: | |
9217 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
9218 | i += 1; | |
9219 | break; | |
9220 | ||
9221 | case DW_OP_const1s: | |
9222 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
9223 | i += 1; | |
9224 | break; | |
9225 | ||
9226 | case DW_OP_const2u: | |
9227 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
9228 | i += 2; | |
9229 | break; | |
9230 | ||
9231 | case DW_OP_const2s: | |
9232 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
9233 | i += 2; | |
9234 | break; | |
9235 | ||
9236 | case DW_OP_const4u: | |
9237 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
9238 | i += 4; | |
9239 | break; | |
9240 | ||
9241 | case DW_OP_const4s: | |
9242 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
9243 | i += 4; | |
9244 | break; | |
9245 | ||
9246 | case DW_OP_constu: | |
9247 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 9248 | &bytes_read); |
c906108c SS |
9249 | i += bytes_read; |
9250 | break; | |
9251 | ||
9252 | case DW_OP_consts: | |
9253 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
9254 | i += bytes_read; | |
9255 | break; | |
9256 | ||
f1bea926 JM |
9257 | case DW_OP_dup: |
9258 | stack[stacki + 1] = stack[stacki]; | |
9259 | stacki++; | |
9260 | break; | |
9261 | ||
c906108c SS |
9262 | case DW_OP_plus: |
9263 | stack[stacki - 1] += stack[stacki]; | |
9264 | stacki--; | |
9265 | break; | |
9266 | ||
9267 | case DW_OP_plus_uconst: | |
9268 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
9269 | i += bytes_read; | |
9270 | break; | |
9271 | ||
9272 | case DW_OP_minus: | |
f1bea926 | 9273 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
9274 | stacki--; |
9275 | break; | |
9276 | ||
7a292a7a | 9277 | case DW_OP_deref: |
7a292a7a | 9278 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
9279 | this using GDB's address_class enum. This is valid for partial |
9280 | global symbols, although the variable's address will be bogus | |
9281 | in the psymtab. */ | |
7a292a7a | 9282 | if (i < size) |
4d3c2250 | 9283 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
9284 | break; |
9285 | ||
9d774e44 | 9286 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
9287 | /* The top of the stack has the offset from the beginning |
9288 | of the thread control block at which the variable is located. */ | |
9289 | /* Nothing should follow this operator, so the top of stack would | |
9290 | be returned. */ | |
4cecd739 DJ |
9291 | /* This is valid for partial global symbols, but the variable's |
9292 | address will be bogus in the psymtab. */ | |
9d774e44 | 9293 | if (i < size) |
4d3c2250 | 9294 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
9295 | break; |
9296 | ||
42be36b3 CT |
9297 | case DW_OP_GNU_uninit: |
9298 | break; | |
9299 | ||
c906108c | 9300 | default: |
e2e0b3e5 | 9301 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
4d3c2250 | 9302 | dwarf_stack_op_name (op)); |
c906108c SS |
9303 | return (stack[stacki]); |
9304 | } | |
9305 | } | |
9306 | return (stack[stacki]); | |
9307 | } | |
9308 | ||
9309 | /* memory allocation interface */ | |
9310 | ||
c906108c | 9311 | static struct dwarf_block * |
7b5a2f43 | 9312 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
9313 | { |
9314 | struct dwarf_block *blk; | |
9315 | ||
9316 | blk = (struct dwarf_block *) | |
7b5a2f43 | 9317 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
9318 | return (blk); |
9319 | } | |
9320 | ||
9321 | static struct abbrev_info * | |
f3dd6933 | 9322 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
9323 | { |
9324 | struct abbrev_info *abbrev; | |
9325 | ||
f3dd6933 DJ |
9326 | abbrev = (struct abbrev_info *) |
9327 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
9328 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
9329 | return (abbrev); | |
9330 | } | |
9331 | ||
9332 | static struct die_info * | |
fba45db2 | 9333 | dwarf_alloc_die (void) |
c906108c SS |
9334 | { |
9335 | struct die_info *die; | |
9336 | ||
9337 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
9338 | memset (die, 0, sizeof (struct die_info)); | |
9339 | return (die); | |
9340 | } | |
2e276125 JB |
9341 | |
9342 | \f | |
9343 | /* Macro support. */ | |
9344 | ||
9345 | ||
9346 | /* Return the full name of file number I in *LH's file name table. | |
9347 | Use COMP_DIR as the name of the current directory of the | |
9348 | compilation. The result is allocated using xmalloc; the caller is | |
9349 | responsible for freeing it. */ | |
9350 | static char * | |
9351 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
9352 | { | |
6a83a1e6 EZ |
9353 | /* Is the file number a valid index into the line header's file name |
9354 | table? Remember that file numbers start with one, not zero. */ | |
9355 | if (1 <= file && file <= lh->num_file_names) | |
9356 | { | |
9357 | struct file_entry *fe = &lh->file_names[file - 1]; | |
2e276125 | 9358 | |
6a83a1e6 EZ |
9359 | if (IS_ABSOLUTE_PATH (fe->name)) |
9360 | return xstrdup (fe->name); | |
9361 | else | |
9362 | { | |
9363 | const char *dir; | |
9364 | int dir_len; | |
9365 | char *full_name; | |
9366 | ||
9367 | if (fe->dir_index) | |
9368 | dir = lh->include_dirs[fe->dir_index - 1]; | |
9369 | else | |
9370 | dir = comp_dir; | |
9371 | ||
9372 | if (dir) | |
9373 | { | |
9374 | dir_len = strlen (dir); | |
9375 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
9376 | strcpy (full_name, dir); | |
9377 | full_name[dir_len] = '/'; | |
9378 | strcpy (full_name + dir_len + 1, fe->name); | |
9379 | return full_name; | |
9380 | } | |
9381 | else | |
9382 | return xstrdup (fe->name); | |
9383 | } | |
9384 | } | |
2e276125 JB |
9385 | else |
9386 | { | |
6a83a1e6 EZ |
9387 | /* The compiler produced a bogus file number. We can at least |
9388 | record the macro definitions made in the file, even if we | |
9389 | won't be able to find the file by name. */ | |
9390 | char fake_name[80]; | |
9391 | sprintf (fake_name, "<bad macro file number %d>", file); | |
2e276125 | 9392 | |
6a83a1e6 EZ |
9393 | complaint (&symfile_complaints, |
9394 | _("bad file number in macro information (%d)"), | |
9395 | file); | |
2e276125 | 9396 | |
6a83a1e6 | 9397 | return xstrdup (fake_name); |
2e276125 JB |
9398 | } |
9399 | } | |
9400 | ||
9401 | ||
9402 | static struct macro_source_file * | |
9403 | macro_start_file (int file, int line, | |
9404 | struct macro_source_file *current_file, | |
9405 | const char *comp_dir, | |
9406 | struct line_header *lh, struct objfile *objfile) | |
9407 | { | |
9408 | /* The full name of this source file. */ | |
9409 | char *full_name = file_full_name (file, lh, comp_dir); | |
9410 | ||
9411 | /* We don't create a macro table for this compilation unit | |
9412 | at all until we actually get a filename. */ | |
9413 | if (! pending_macros) | |
4a146b47 | 9414 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 9415 | objfile->macro_cache); |
2e276125 JB |
9416 | |
9417 | if (! current_file) | |
9418 | /* If we have no current file, then this must be the start_file | |
9419 | directive for the compilation unit's main source file. */ | |
9420 | current_file = macro_set_main (pending_macros, full_name); | |
9421 | else | |
9422 | current_file = macro_include (current_file, line, full_name); | |
9423 | ||
9424 | xfree (full_name); | |
9425 | ||
9426 | return current_file; | |
9427 | } | |
9428 | ||
9429 | ||
9430 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
9431 | followed by a null byte. */ | |
9432 | static char * | |
9433 | copy_string (const char *buf, int len) | |
9434 | { | |
9435 | char *s = xmalloc (len + 1); | |
9436 | memcpy (s, buf, len); | |
9437 | s[len] = '\0'; | |
9438 | ||
9439 | return s; | |
9440 | } | |
9441 | ||
9442 | ||
9443 | static const char * | |
9444 | consume_improper_spaces (const char *p, const char *body) | |
9445 | { | |
9446 | if (*p == ' ') | |
9447 | { | |
4d3c2250 | 9448 | complaint (&symfile_complaints, |
e2e0b3e5 | 9449 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 9450 | body); |
2e276125 JB |
9451 | |
9452 | while (*p == ' ') | |
9453 | p++; | |
9454 | } | |
9455 | ||
9456 | return p; | |
9457 | } | |
9458 | ||
9459 | ||
9460 | static void | |
9461 | parse_macro_definition (struct macro_source_file *file, int line, | |
9462 | const char *body) | |
9463 | { | |
9464 | const char *p; | |
9465 | ||
9466 | /* The body string takes one of two forms. For object-like macro | |
9467 | definitions, it should be: | |
9468 | ||
9469 | <macro name> " " <definition> | |
9470 | ||
9471 | For function-like macro definitions, it should be: | |
9472 | ||
9473 | <macro name> "() " <definition> | |
9474 | or | |
9475 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
9476 | ||
9477 | Spaces may appear only where explicitly indicated, and in the | |
9478 | <definition>. | |
9479 | ||
9480 | The Dwarf 2 spec says that an object-like macro's name is always | |
9481 | followed by a space, but versions of GCC around March 2002 omit | |
9482 | the space when the macro's definition is the empty string. | |
9483 | ||
9484 | The Dwarf 2 spec says that there should be no spaces between the | |
9485 | formal arguments in a function-like macro's formal argument list, | |
9486 | but versions of GCC around March 2002 include spaces after the | |
9487 | commas. */ | |
9488 | ||
9489 | ||
9490 | /* Find the extent of the macro name. The macro name is terminated | |
9491 | by either a space or null character (for an object-like macro) or | |
9492 | an opening paren (for a function-like macro). */ | |
9493 | for (p = body; *p; p++) | |
9494 | if (*p == ' ' || *p == '(') | |
9495 | break; | |
9496 | ||
9497 | if (*p == ' ' || *p == '\0') | |
9498 | { | |
9499 | /* It's an object-like macro. */ | |
9500 | int name_len = p - body; | |
9501 | char *name = copy_string (body, name_len); | |
9502 | const char *replacement; | |
9503 | ||
9504 | if (*p == ' ') | |
9505 | replacement = body + name_len + 1; | |
9506 | else | |
9507 | { | |
4d3c2250 | 9508 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9509 | replacement = body + name_len; |
9510 | } | |
9511 | ||
9512 | macro_define_object (file, line, name, replacement); | |
9513 | ||
9514 | xfree (name); | |
9515 | } | |
9516 | else if (*p == '(') | |
9517 | { | |
9518 | /* It's a function-like macro. */ | |
9519 | char *name = copy_string (body, p - body); | |
9520 | int argc = 0; | |
9521 | int argv_size = 1; | |
9522 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
9523 | ||
9524 | p++; | |
9525 | ||
9526 | p = consume_improper_spaces (p, body); | |
9527 | ||
9528 | /* Parse the formal argument list. */ | |
9529 | while (*p && *p != ')') | |
9530 | { | |
9531 | /* Find the extent of the current argument name. */ | |
9532 | const char *arg_start = p; | |
9533 | ||
9534 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
9535 | p++; | |
9536 | ||
9537 | if (! *p || p == arg_start) | |
4d3c2250 | 9538 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9539 | else |
9540 | { | |
9541 | /* Make sure argv has room for the new argument. */ | |
9542 | if (argc >= argv_size) | |
9543 | { | |
9544 | argv_size *= 2; | |
9545 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
9546 | } | |
9547 | ||
9548 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
9549 | } | |
9550 | ||
9551 | p = consume_improper_spaces (p, body); | |
9552 | ||
9553 | /* Consume the comma, if present. */ | |
9554 | if (*p == ',') | |
9555 | { | |
9556 | p++; | |
9557 | ||
9558 | p = consume_improper_spaces (p, body); | |
9559 | } | |
9560 | } | |
9561 | ||
9562 | if (*p == ')') | |
9563 | { | |
9564 | p++; | |
9565 | ||
9566 | if (*p == ' ') | |
9567 | /* Perfectly formed definition, no complaints. */ | |
9568 | macro_define_function (file, line, name, | |
9569 | argc, (const char **) argv, | |
9570 | p + 1); | |
9571 | else if (*p == '\0') | |
9572 | { | |
9573 | /* Complain, but do define it. */ | |
4d3c2250 | 9574 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9575 | macro_define_function (file, line, name, |
9576 | argc, (const char **) argv, | |
9577 | p); | |
9578 | } | |
9579 | else | |
9580 | /* Just complain. */ | |
4d3c2250 | 9581 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9582 | } |
9583 | else | |
9584 | /* Just complain. */ | |
4d3c2250 | 9585 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9586 | |
9587 | xfree (name); | |
9588 | { | |
9589 | int i; | |
9590 | ||
9591 | for (i = 0; i < argc; i++) | |
9592 | xfree (argv[i]); | |
9593 | } | |
9594 | xfree (argv); | |
9595 | } | |
9596 | else | |
4d3c2250 | 9597 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9598 | } |
9599 | ||
9600 | ||
9601 | static void | |
9602 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
9603 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 9604 | struct dwarf2_cu *cu) |
2e276125 | 9605 | { |
fe1b8b76 | 9606 | gdb_byte *mac_ptr, *mac_end; |
2e276125 JB |
9607 | struct macro_source_file *current_file = 0; |
9608 | ||
6502dd73 | 9609 | if (dwarf2_per_objfile->macinfo_buffer == NULL) |
2e276125 | 9610 | { |
e2e0b3e5 | 9611 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
9612 | return; |
9613 | } | |
9614 | ||
6502dd73 DJ |
9615 | mac_ptr = dwarf2_per_objfile->macinfo_buffer + offset; |
9616 | mac_end = dwarf2_per_objfile->macinfo_buffer | |
9617 | + dwarf2_per_objfile->macinfo_size; | |
2e276125 JB |
9618 | |
9619 | for (;;) | |
9620 | { | |
9621 | enum dwarf_macinfo_record_type macinfo_type; | |
9622 | ||
9623 | /* Do we at least have room for a macinfo type byte? */ | |
9624 | if (mac_ptr >= mac_end) | |
9625 | { | |
4d3c2250 | 9626 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9627 | return; |
9628 | } | |
9629 | ||
9630 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
9631 | mac_ptr++; | |
9632 | ||
9633 | switch (macinfo_type) | |
9634 | { | |
9635 | /* A zero macinfo type indicates the end of the macro | |
9636 | information. */ | |
9637 | case 0: | |
9638 | return; | |
9639 | ||
9640 | case DW_MACINFO_define: | |
9641 | case DW_MACINFO_undef: | |
9642 | { | |
891d2f0b | 9643 | unsigned int bytes_read; |
2e276125 JB |
9644 | int line; |
9645 | char *body; | |
9646 | ||
9647 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9648 | mac_ptr += bytes_read; | |
9649 | body = read_string (abfd, mac_ptr, &bytes_read); | |
9650 | mac_ptr += bytes_read; | |
9651 | ||
9652 | if (! current_file) | |
4d3c2250 | 9653 | complaint (&symfile_complaints, |
e2e0b3e5 | 9654 | _("debug info gives macro %s outside of any file: %s"), |
4d3c2250 KB |
9655 | macinfo_type == |
9656 | DW_MACINFO_define ? "definition" : macinfo_type == | |
9657 | DW_MACINFO_undef ? "undefinition" : | |
9658 | "something-or-other", body); | |
2e276125 JB |
9659 | else |
9660 | { | |
9661 | if (macinfo_type == DW_MACINFO_define) | |
9662 | parse_macro_definition (current_file, line, body); | |
9663 | else if (macinfo_type == DW_MACINFO_undef) | |
9664 | macro_undef (current_file, line, body); | |
9665 | } | |
9666 | } | |
9667 | break; | |
9668 | ||
9669 | case DW_MACINFO_start_file: | |
9670 | { | |
891d2f0b | 9671 | unsigned int bytes_read; |
2e276125 JB |
9672 | int line, file; |
9673 | ||
9674 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9675 | mac_ptr += bytes_read; | |
9676 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9677 | mac_ptr += bytes_read; | |
9678 | ||
9679 | current_file = macro_start_file (file, line, | |
9680 | current_file, comp_dir, | |
e7c27a73 | 9681 | lh, cu->objfile); |
2e276125 JB |
9682 | } |
9683 | break; | |
9684 | ||
9685 | case DW_MACINFO_end_file: | |
9686 | if (! current_file) | |
4d3c2250 | 9687 | complaint (&symfile_complaints, |
e2e0b3e5 | 9688 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
9689 | else |
9690 | { | |
9691 | current_file = current_file->included_by; | |
9692 | if (! current_file) | |
9693 | { | |
9694 | enum dwarf_macinfo_record_type next_type; | |
9695 | ||
9696 | /* GCC circa March 2002 doesn't produce the zero | |
9697 | type byte marking the end of the compilation | |
9698 | unit. Complain if it's not there, but exit no | |
9699 | matter what. */ | |
9700 | ||
9701 | /* Do we at least have room for a macinfo type byte? */ | |
9702 | if (mac_ptr >= mac_end) | |
9703 | { | |
4d3c2250 | 9704 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9705 | return; |
9706 | } | |
9707 | ||
9708 | /* We don't increment mac_ptr here, so this is just | |
9709 | a look-ahead. */ | |
9710 | next_type = read_1_byte (abfd, mac_ptr); | |
9711 | if (next_type != 0) | |
4d3c2250 | 9712 | complaint (&symfile_complaints, |
e2e0b3e5 | 9713 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
9714 | |
9715 | return; | |
9716 | } | |
9717 | } | |
9718 | break; | |
9719 | ||
9720 | case DW_MACINFO_vendor_ext: | |
9721 | { | |
891d2f0b | 9722 | unsigned int bytes_read; |
2e276125 JB |
9723 | int constant; |
9724 | char *string; | |
9725 | ||
9726 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9727 | mac_ptr += bytes_read; | |
9728 | string = read_string (abfd, mac_ptr, &bytes_read); | |
9729 | mac_ptr += bytes_read; | |
9730 | ||
9731 | /* We don't recognize any vendor extensions. */ | |
9732 | } | |
9733 | break; | |
9734 | } | |
9735 | } | |
9736 | } | |
8e19ed76 PS |
9737 | |
9738 | /* Check if the attribute's form is a DW_FORM_block* | |
9739 | if so return true else false. */ | |
9740 | static int | |
9741 | attr_form_is_block (struct attribute *attr) | |
9742 | { | |
9743 | return (attr == NULL ? 0 : | |
9744 | attr->form == DW_FORM_block1 | |
9745 | || attr->form == DW_FORM_block2 | |
9746 | || attr->form == DW_FORM_block4 | |
9747 | || attr->form == DW_FORM_block); | |
9748 | } | |
4c2df51b | 9749 | |
c6a0999f JB |
9750 | /* Return non-zero if ATTR's value is a section offset --- classes |
9751 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
9752 | You may use DW_UNSND (attr) to retrieve such offsets. | |
9753 | ||
9754 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
9755 | may have a value that belongs to more than one of these classes; it | |
9756 | would be ambiguous if we did, because we use the same forms for all | |
9757 | of them. */ | |
3690dd37 JB |
9758 | static int |
9759 | attr_form_is_section_offset (struct attribute *attr) | |
9760 | { | |
9761 | return (attr->form == DW_FORM_data4 | |
9762 | || attr->form == DW_FORM_data8); | |
9763 | } | |
9764 | ||
9765 | ||
9766 | /* Return non-zero if ATTR's value falls in the 'constant' class, or | |
9767 | zero otherwise. When this function returns true, you can apply | |
9768 | dwarf2_get_attr_constant_value to it. | |
9769 | ||
9770 | However, note that for some attributes you must check | |
9771 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
9772 | and DW_FORM_data8 are members of both the constant class, and of | |
9773 | the classes that contain offsets into other debug sections | |
9774 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
9775 | that, if an attribute's can be either a constant or one of the | |
9776 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
9777 | taken as section offsets, not constants. */ | |
9778 | static int | |
9779 | attr_form_is_constant (struct attribute *attr) | |
9780 | { | |
9781 | switch (attr->form) | |
9782 | { | |
9783 | case DW_FORM_sdata: | |
9784 | case DW_FORM_udata: | |
9785 | case DW_FORM_data1: | |
9786 | case DW_FORM_data2: | |
9787 | case DW_FORM_data4: | |
9788 | case DW_FORM_data8: | |
9789 | return 1; | |
9790 | default: | |
9791 | return 0; | |
9792 | } | |
9793 | } | |
9794 | ||
4c2df51b DJ |
9795 | static void |
9796 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 9797 | struct dwarf2_cu *cu) |
4c2df51b | 9798 | { |
93e7bd98 DJ |
9799 | struct objfile *objfile = cu->objfile; |
9800 | ||
9801 | /* Save the master objfile, so that we can report and look up the | |
9802 | correct file containing this variable. */ | |
9803 | if (objfile->separate_debug_objfile_backlink) | |
9804 | objfile = objfile->separate_debug_objfile_backlink; | |
9805 | ||
3690dd37 | 9806 | if (attr_form_is_section_offset (attr) |
99bcc461 DJ |
9807 | /* ".debug_loc" may not exist at all, or the offset may be outside |
9808 | the section. If so, fall through to the complaint in the | |
9809 | other branch. */ | |
9810 | && DW_UNSND (attr) < dwarf2_per_objfile->loc_size) | |
4c2df51b | 9811 | { |
0d53c4c4 | 9812 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 9813 | |
4a146b47 | 9814 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9815 | sizeof (struct dwarf2_loclist_baton)); |
93e7bd98 | 9816 | baton->objfile = objfile; |
4c2df51b | 9817 | |
0d53c4c4 DJ |
9818 | /* We don't know how long the location list is, but make sure we |
9819 | don't run off the edge of the section. */ | |
6502dd73 DJ |
9820 | baton->size = dwarf2_per_objfile->loc_size - DW_UNSND (attr); |
9821 | baton->data = dwarf2_per_objfile->loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
9822 | baton->base_address = cu->header.base_address; |
9823 | if (cu->header.base_known == 0) | |
0d53c4c4 | 9824 | complaint (&symfile_complaints, |
e2e0b3e5 | 9825 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 9826 | |
a67af2b9 | 9827 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
9828 | SYMBOL_LOCATION_BATON (sym) = baton; |
9829 | } | |
9830 | else | |
9831 | { | |
9832 | struct dwarf2_locexpr_baton *baton; | |
9833 | ||
4a146b47 | 9834 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9835 | sizeof (struct dwarf2_locexpr_baton)); |
93e7bd98 | 9836 | baton->objfile = objfile; |
0d53c4c4 DJ |
9837 | |
9838 | if (attr_form_is_block (attr)) | |
9839 | { | |
9840 | /* Note that we're just copying the block's data pointer | |
9841 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
9842 | info_buffer for SYM's objfile; right now we never release |
9843 | that buffer, but when we do clean up properly this may | |
9844 | need to change. */ | |
0d53c4c4 DJ |
9845 | baton->size = DW_BLOCK (attr)->size; |
9846 | baton->data = DW_BLOCK (attr)->data; | |
9847 | } | |
9848 | else | |
9849 | { | |
9850 | dwarf2_invalid_attrib_class_complaint ("location description", | |
9851 | SYMBOL_NATURAL_NAME (sym)); | |
9852 | baton->size = 0; | |
9853 | baton->data = NULL; | |
9854 | } | |
9855 | ||
a67af2b9 | 9856 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
9857 | SYMBOL_LOCATION_BATON (sym) = baton; |
9858 | } | |
4c2df51b | 9859 | } |
6502dd73 | 9860 | |
ae038cb0 | 9861 | /* Locate the compilation unit from CU's objfile which contains the |
10b3939b | 9862 | DIE at OFFSET. Raises an error on failure. */ |
ae038cb0 DJ |
9863 | |
9864 | static struct dwarf2_per_cu_data * | |
9865 | dwarf2_find_containing_comp_unit (unsigned long offset, | |
9866 | struct objfile *objfile) | |
9867 | { | |
9868 | struct dwarf2_per_cu_data *this_cu; | |
9869 | int low, high; | |
9870 | ||
ae038cb0 DJ |
9871 | low = 0; |
9872 | high = dwarf2_per_objfile->n_comp_units - 1; | |
9873 | while (high > low) | |
9874 | { | |
9875 | int mid = low + (high - low) / 2; | |
9876 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) | |
9877 | high = mid; | |
9878 | else | |
9879 | low = mid + 1; | |
9880 | } | |
9881 | gdb_assert (low == high); | |
9882 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
9883 | { | |
10b3939b | 9884 | if (low == 0) |
8a3fe4f8 AC |
9885 | error (_("Dwarf Error: could not find partial DIE containing " |
9886 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
9887 | (long) offset, bfd_get_filename (objfile->obfd)); |
9888 | ||
ae038cb0 DJ |
9889 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
9890 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
9891 | } | |
9892 | else | |
9893 | { | |
9894 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
9895 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9896 | && offset >= this_cu->offset + this_cu->length) | |
8a3fe4f8 | 9897 | error (_("invalid dwarf2 offset %ld"), offset); |
ae038cb0 DJ |
9898 | gdb_assert (offset < this_cu->offset + this_cu->length); |
9899 | return this_cu; | |
9900 | } | |
9901 | } | |
9902 | ||
10b3939b DJ |
9903 | /* Locate the compilation unit from OBJFILE which is located at exactly |
9904 | OFFSET. Raises an error on failure. */ | |
9905 | ||
ae038cb0 DJ |
9906 | static struct dwarf2_per_cu_data * |
9907 | dwarf2_find_comp_unit (unsigned long offset, struct objfile *objfile) | |
9908 | { | |
9909 | struct dwarf2_per_cu_data *this_cu; | |
9910 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
9911 | if (this_cu->offset != offset) | |
8a3fe4f8 | 9912 | error (_("no compilation unit with offset %ld."), offset); |
ae038cb0 DJ |
9913 | return this_cu; |
9914 | } | |
9915 | ||
9916 | /* Release one cached compilation unit, CU. We unlink it from the tree | |
9917 | of compilation units, but we don't remove it from the read_in_chain; | |
9918 | the caller is responsible for that. */ | |
9919 | ||
9920 | static void | |
9921 | free_one_comp_unit (void *data) | |
9922 | { | |
9923 | struct dwarf2_cu *cu = data; | |
9924 | ||
9925 | if (cu->per_cu != NULL) | |
9926 | cu->per_cu->cu = NULL; | |
9927 | cu->per_cu = NULL; | |
9928 | ||
9929 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10b3939b DJ |
9930 | if (cu->dies) |
9931 | free_die_list (cu->dies); | |
ae038cb0 DJ |
9932 | |
9933 | xfree (cu); | |
9934 | } | |
9935 | ||
72bf9492 | 9936 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
9937 | when we're finished with it. We can't free the pointer itself, but be |
9938 | sure to unlink it from the cache. Also release any associated storage | |
9939 | and perform cache maintenance. | |
72bf9492 DJ |
9940 | |
9941 | Only used during partial symbol parsing. */ | |
9942 | ||
9943 | static void | |
9944 | free_stack_comp_unit (void *data) | |
9945 | { | |
9946 | struct dwarf2_cu *cu = data; | |
9947 | ||
9948 | obstack_free (&cu->comp_unit_obstack, NULL); | |
9949 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
9950 | |
9951 | if (cu->per_cu != NULL) | |
9952 | { | |
9953 | /* This compilation unit is on the stack in our caller, so we | |
9954 | should not xfree it. Just unlink it. */ | |
9955 | cu->per_cu->cu = NULL; | |
9956 | cu->per_cu = NULL; | |
9957 | ||
9958 | /* If we had a per-cu pointer, then we may have other compilation | |
9959 | units loaded, so age them now. */ | |
9960 | age_cached_comp_units (); | |
9961 | } | |
9962 | } | |
9963 | ||
9964 | /* Free all cached compilation units. */ | |
9965 | ||
9966 | static void | |
9967 | free_cached_comp_units (void *data) | |
9968 | { | |
9969 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9970 | ||
9971 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9972 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9973 | while (per_cu != NULL) | |
9974 | { | |
9975 | struct dwarf2_per_cu_data *next_cu; | |
9976 | ||
9977 | next_cu = per_cu->cu->read_in_chain; | |
9978 | ||
9979 | free_one_comp_unit (per_cu->cu); | |
9980 | *last_chain = next_cu; | |
9981 | ||
9982 | per_cu = next_cu; | |
9983 | } | |
9984 | } | |
9985 | ||
9986 | /* Increase the age counter on each cached compilation unit, and free | |
9987 | any that are too old. */ | |
9988 | ||
9989 | static void | |
9990 | age_cached_comp_units (void) | |
9991 | { | |
9992 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9993 | ||
9994 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
9995 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9996 | while (per_cu != NULL) | |
9997 | { | |
9998 | per_cu->cu->last_used ++; | |
9999 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
10000 | dwarf2_mark (per_cu->cu); | |
10001 | per_cu = per_cu->cu->read_in_chain; | |
10002 | } | |
10003 | ||
10004 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10005 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
10006 | while (per_cu != NULL) | |
10007 | { | |
10008 | struct dwarf2_per_cu_data *next_cu; | |
10009 | ||
10010 | next_cu = per_cu->cu->read_in_chain; | |
10011 | ||
10012 | if (!per_cu->cu->mark) | |
10013 | { | |
10014 | free_one_comp_unit (per_cu->cu); | |
10015 | *last_chain = next_cu; | |
10016 | } | |
10017 | else | |
10018 | last_chain = &per_cu->cu->read_in_chain; | |
10019 | ||
10020 | per_cu = next_cu; | |
10021 | } | |
10022 | } | |
10023 | ||
10024 | /* Remove a single compilation unit from the cache. */ | |
10025 | ||
10026 | static void | |
10027 | free_one_cached_comp_unit (void *target_cu) | |
10028 | { | |
10029 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
10030 | ||
10031 | per_cu = dwarf2_per_objfile->read_in_chain; | |
10032 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
10033 | while (per_cu != NULL) | |
10034 | { | |
10035 | struct dwarf2_per_cu_data *next_cu; | |
10036 | ||
10037 | next_cu = per_cu->cu->read_in_chain; | |
10038 | ||
10039 | if (per_cu->cu == target_cu) | |
10040 | { | |
10041 | free_one_comp_unit (per_cu->cu); | |
10042 | *last_chain = next_cu; | |
10043 | break; | |
10044 | } | |
10045 | else | |
10046 | last_chain = &per_cu->cu->read_in_chain; | |
10047 | ||
10048 | per_cu = next_cu; | |
10049 | } | |
10050 | } | |
10051 | ||
fe3e1990 DJ |
10052 | /* Release all extra memory associated with OBJFILE. */ |
10053 | ||
10054 | void | |
10055 | dwarf2_free_objfile (struct objfile *objfile) | |
10056 | { | |
10057 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
10058 | ||
10059 | if (dwarf2_per_objfile == NULL) | |
10060 | return; | |
10061 | ||
10062 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
10063 | free_cached_comp_units (NULL); | |
10064 | ||
10065 | /* Everything else should be on the objfile obstack. */ | |
10066 | } | |
10067 | ||
1c379e20 DJ |
10068 | /* A pair of DIE offset and GDB type pointer. We store these |
10069 | in a hash table separate from the DIEs, and preserve them | |
10070 | when the DIEs are flushed out of cache. */ | |
10071 | ||
10072 | struct dwarf2_offset_and_type | |
10073 | { | |
10074 | unsigned int offset; | |
10075 | struct type *type; | |
10076 | }; | |
10077 | ||
10078 | /* Hash function for a dwarf2_offset_and_type. */ | |
10079 | ||
10080 | static hashval_t | |
10081 | offset_and_type_hash (const void *item) | |
10082 | { | |
10083 | const struct dwarf2_offset_and_type *ofs = item; | |
10084 | return ofs->offset; | |
10085 | } | |
10086 | ||
10087 | /* Equality function for a dwarf2_offset_and_type. */ | |
10088 | ||
10089 | static int | |
10090 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
10091 | { | |
10092 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
10093 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
10094 | return ofs_lhs->offset == ofs_rhs->offset; | |
10095 | } | |
10096 | ||
10097 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
10098 | table if necessary. */ | |
10099 | ||
10100 | static void | |
10101 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
10102 | { | |
10103 | struct dwarf2_offset_and_type **slot, ofs; | |
10104 | ||
10105 | die->type = type; | |
10106 | ||
10107 | if (cu->per_cu == NULL) | |
10108 | return; | |
10109 | ||
10110 | if (cu->per_cu->type_hash == NULL) | |
10111 | cu->per_cu->type_hash | |
10112 | = htab_create_alloc_ex (cu->header.length / 24, | |
10113 | offset_and_type_hash, | |
10114 | offset_and_type_eq, | |
10115 | NULL, | |
10116 | &cu->objfile->objfile_obstack, | |
10117 | hashtab_obstack_allocate, | |
10118 | dummy_obstack_deallocate); | |
10119 | ||
10120 | ofs.offset = die->offset; | |
10121 | ofs.type = type; | |
10122 | slot = (struct dwarf2_offset_and_type **) | |
10123 | htab_find_slot_with_hash (cu->per_cu->type_hash, &ofs, ofs.offset, INSERT); | |
10124 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); | |
10125 | **slot = ofs; | |
10126 | } | |
10127 | ||
1c379e20 DJ |
10128 | /* Find the type for DIE in TYPE_HASH, or return NULL if DIE does not |
10129 | have a saved type. */ | |
10130 | ||
10131 | static struct type * | |
10132 | get_die_type (struct die_info *die, htab_t type_hash) | |
10133 | { | |
10134 | struct dwarf2_offset_and_type *slot, ofs; | |
10135 | ||
10136 | ofs.offset = die->offset; | |
10137 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
10138 | if (slot) | |
10139 | return slot->type; | |
10140 | else | |
10141 | return NULL; | |
10142 | } | |
10143 | ||
10144 | /* Restore the types of the DIE tree starting at START_DIE from the hash | |
10145 | table saved in CU. */ | |
10146 | ||
10147 | static void | |
10148 | reset_die_and_siblings_types (struct die_info *start_die, struct dwarf2_cu *cu) | |
10149 | { | |
10150 | struct die_info *die; | |
10151 | ||
10152 | if (cu->per_cu->type_hash == NULL) | |
10153 | return; | |
10154 | ||
10155 | for (die = start_die; die != NULL; die = die->sibling) | |
10156 | { | |
10157 | die->type = get_die_type (die, cu->per_cu->type_hash); | |
10158 | if (die->child != NULL) | |
10159 | reset_die_and_siblings_types (die->child, cu); | |
10160 | } | |
10161 | } | |
10162 | ||
10b3939b DJ |
10163 | /* Set the mark field in CU and in every other compilation unit in the |
10164 | cache that we must keep because we are keeping CU. */ | |
10165 | ||
10166 | /* Add a dependence relationship from CU to REF_PER_CU. */ | |
10167 | ||
10168 | static void | |
10169 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
10170 | struct dwarf2_per_cu_data *ref_per_cu) | |
10171 | { | |
10172 | void **slot; | |
10173 | ||
10174 | if (cu->dependencies == NULL) | |
10175 | cu->dependencies | |
10176 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
10177 | NULL, &cu->comp_unit_obstack, | |
10178 | hashtab_obstack_allocate, | |
10179 | dummy_obstack_deallocate); | |
10180 | ||
10181 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
10182 | if (*slot == NULL) | |
10183 | *slot = ref_per_cu; | |
10184 | } | |
1c379e20 | 10185 | |
ae038cb0 DJ |
10186 | /* Set the mark field in CU and in every other compilation unit in the |
10187 | cache that we must keep because we are keeping CU. */ | |
10188 | ||
10b3939b DJ |
10189 | static int |
10190 | dwarf2_mark_helper (void **slot, void *data) | |
10191 | { | |
10192 | struct dwarf2_per_cu_data *per_cu; | |
10193 | ||
10194 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
10195 | if (per_cu->cu->mark) | |
10196 | return 1; | |
10197 | per_cu->cu->mark = 1; | |
10198 | ||
10199 | if (per_cu->cu->dependencies != NULL) | |
10200 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
10201 | ||
10202 | return 1; | |
10203 | } | |
10204 | ||
ae038cb0 DJ |
10205 | static void |
10206 | dwarf2_mark (struct dwarf2_cu *cu) | |
10207 | { | |
10208 | if (cu->mark) | |
10209 | return; | |
10210 | cu->mark = 1; | |
10b3939b DJ |
10211 | if (cu->dependencies != NULL) |
10212 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
10213 | } |
10214 | ||
10215 | static void | |
10216 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
10217 | { | |
10218 | while (per_cu) | |
10219 | { | |
10220 | per_cu->cu->mark = 0; | |
10221 | per_cu = per_cu->cu->read_in_chain; | |
10222 | } | |
72bf9492 DJ |
10223 | } |
10224 | ||
72bf9492 DJ |
10225 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
10226 | is its offset in .debug_info for this objfile. */ | |
10227 | ||
10228 | static hashval_t | |
10229 | partial_die_hash (const void *item) | |
10230 | { | |
10231 | const struct partial_die_info *part_die = item; | |
10232 | return part_die->offset; | |
10233 | } | |
10234 | ||
10235 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
10236 | are equal if they have the same offset. */ | |
10237 | ||
10238 | static int | |
10239 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
10240 | { | |
10241 | const struct partial_die_info *part_die_lhs = item_lhs; | |
10242 | const struct partial_die_info *part_die_rhs = item_rhs; | |
10243 | return part_die_lhs->offset == part_die_rhs->offset; | |
10244 | } | |
10245 | ||
ae038cb0 DJ |
10246 | static struct cmd_list_element *set_dwarf2_cmdlist; |
10247 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
10248 | ||
10249 | static void | |
10250 | set_dwarf2_cmd (char *args, int from_tty) | |
10251 | { | |
10252 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
10253 | } | |
10254 | ||
10255 | static void | |
10256 | show_dwarf2_cmd (char *args, int from_tty) | |
10257 | { | |
10258 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
10259 | } | |
10260 | ||
6502dd73 DJ |
10261 | void _initialize_dwarf2_read (void); |
10262 | ||
10263 | void | |
10264 | _initialize_dwarf2_read (void) | |
10265 | { | |
10266 | dwarf2_objfile_data_key = register_objfile_data (); | |
ae038cb0 | 10267 | |
1bedd215 AC |
10268 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
10269 | Set DWARF 2 specific variables.\n\ | |
10270 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10271 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
10272 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
10273 | ||
1bedd215 AC |
10274 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
10275 | Show DWARF 2 specific variables\n\ | |
10276 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10277 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
10278 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
10279 | ||
10280 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
10281 | &dwarf2_max_cache_age, _("\ |
10282 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10283 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10284 | A higher limit means that cached compilation units will be stored\n\ | |
10285 | in memory longer, and more total memory will be used. Zero disables\n\ | |
10286 | caching, which can slow down startup."), | |
2c5b56ce | 10287 | NULL, |
920d2a44 | 10288 | show_dwarf2_max_cache_age, |
2c5b56ce | 10289 | &set_dwarf2_cmdlist, |
ae038cb0 | 10290 | &show_dwarf2_cmdlist); |
6502dd73 | 10291 | } |