Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
4 | 2004, 2005, 2006, 2007 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 | ||
93e7bd98 DJ |
1030 | static void dwarf2_symbol_mark_computed (struct attribute *attr, |
1031 | struct symbol *sym, | |
1032 | struct dwarf2_cu *cu); | |
4c2df51b | 1033 | |
fe1b8b76 JB |
1034 | static gdb_byte *skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, |
1035 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1036 | |
72bf9492 DJ |
1037 | static void free_stack_comp_unit (void *); |
1038 | ||
72bf9492 DJ |
1039 | static hashval_t partial_die_hash (const void *item); |
1040 | ||
1041 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1042 | ||
ae038cb0 DJ |
1043 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
1044 | (unsigned long offset, struct objfile *objfile); | |
1045 | ||
1046 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
1047 | (unsigned long offset, struct objfile *objfile); | |
1048 | ||
1049 | static void free_one_comp_unit (void *); | |
1050 | ||
1051 | static void free_cached_comp_units (void *); | |
1052 | ||
1053 | static void age_cached_comp_units (void); | |
1054 | ||
1055 | static void free_one_cached_comp_unit (void *); | |
1056 | ||
1c379e20 DJ |
1057 | static void set_die_type (struct die_info *, struct type *, |
1058 | struct dwarf2_cu *); | |
1059 | ||
1c379e20 DJ |
1060 | static void reset_die_and_siblings_types (struct die_info *, |
1061 | struct dwarf2_cu *); | |
1c379e20 | 1062 | |
ae038cb0 DJ |
1063 | static void create_all_comp_units (struct objfile *); |
1064 | ||
31ffec48 DJ |
1065 | static struct dwarf2_cu *load_full_comp_unit (struct dwarf2_per_cu_data *, |
1066 | struct objfile *); | |
10b3939b DJ |
1067 | |
1068 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1069 | ||
1070 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1071 | struct dwarf2_per_cu_data *); | |
1072 | ||
ae038cb0 DJ |
1073 | static void dwarf2_mark (struct dwarf2_cu *); |
1074 | ||
1075 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1076 | ||
72019c9c GM |
1077 | static void read_set_type (struct die_info *, struct dwarf2_cu *); |
1078 | ||
1079 | ||
c906108c SS |
1080 | /* Try to locate the sections we need for DWARF 2 debugging |
1081 | information and return true if we have enough to do something. */ | |
1082 | ||
1083 | int | |
6502dd73 | 1084 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1085 | { |
6502dd73 DJ |
1086 | struct dwarf2_per_objfile *data; |
1087 | ||
1088 | /* Initialize per-objfile state. */ | |
1089 | data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
1090 | memset (data, 0, sizeof (*data)); | |
1091 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1092 | dwarf2_per_objfile = data; | |
1093 | ||
188dd5d6 DJ |
1094 | dwarf_info_section = 0; |
1095 | dwarf_abbrev_section = 0; | |
1096 | dwarf_line_section = 0; | |
1097 | dwarf_str_section = 0; | |
1098 | dwarf_macinfo_section = 0; | |
1099 | dwarf_frame_section = 0; | |
1100 | dwarf_eh_frame_section = 0; | |
1101 | dwarf_ranges_section = 0; | |
1102 | dwarf_loc_section = 0; | |
af34e669 | 1103 | |
6502dd73 | 1104 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 1105 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
1106 | } |
1107 | ||
1108 | /* This function is mapped across the sections and remembers the | |
1109 | offset and size of each of the debugging sections we are interested | |
1110 | in. */ | |
1111 | ||
1112 | static void | |
72dca2f5 | 1113 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1114 | { |
6314a349 | 1115 | if (strcmp (sectp->name, INFO_SECTION) == 0) |
c906108c | 1116 | { |
2c500098 | 1117 | dwarf2_per_objfile->info_size = bfd_get_section_size (sectp); |
086df311 | 1118 | dwarf_info_section = sectp; |
c906108c | 1119 | } |
6314a349 | 1120 | else if (strcmp (sectp->name, ABBREV_SECTION) == 0) |
c906108c | 1121 | { |
2c500098 | 1122 | dwarf2_per_objfile->abbrev_size = bfd_get_section_size (sectp); |
086df311 | 1123 | dwarf_abbrev_section = sectp; |
c906108c | 1124 | } |
6314a349 | 1125 | else if (strcmp (sectp->name, LINE_SECTION) == 0) |
c906108c | 1126 | { |
2c500098 | 1127 | dwarf2_per_objfile->line_size = bfd_get_section_size (sectp); |
086df311 | 1128 | dwarf_line_section = sectp; |
c906108c | 1129 | } |
6314a349 | 1130 | else if (strcmp (sectp->name, PUBNAMES_SECTION) == 0) |
c906108c | 1131 | { |
2c500098 | 1132 | dwarf2_per_objfile->pubnames_size = bfd_get_section_size (sectp); |
086df311 | 1133 | dwarf_pubnames_section = sectp; |
c906108c | 1134 | } |
6314a349 | 1135 | else if (strcmp (sectp->name, ARANGES_SECTION) == 0) |
c906108c | 1136 | { |
2c500098 | 1137 | dwarf2_per_objfile->aranges_size = bfd_get_section_size (sectp); |
086df311 | 1138 | dwarf_aranges_section = sectp; |
c906108c | 1139 | } |
6314a349 | 1140 | else if (strcmp (sectp->name, LOC_SECTION) == 0) |
c906108c | 1141 | { |
2c500098 | 1142 | dwarf2_per_objfile->loc_size = bfd_get_section_size (sectp); |
086df311 | 1143 | dwarf_loc_section = sectp; |
c906108c | 1144 | } |
6314a349 | 1145 | else if (strcmp (sectp->name, MACINFO_SECTION) == 0) |
c906108c | 1146 | { |
2c500098 | 1147 | dwarf2_per_objfile->macinfo_size = bfd_get_section_size (sectp); |
0cf824c9 | 1148 | dwarf_macinfo_section = sectp; |
c906108c | 1149 | } |
6314a349 | 1150 | else if (strcmp (sectp->name, STR_SECTION) == 0) |
c906108c | 1151 | { |
2c500098 | 1152 | dwarf2_per_objfile->str_size = bfd_get_section_size (sectp); |
086df311 | 1153 | dwarf_str_section = sectp; |
c906108c | 1154 | } |
6314a349 | 1155 | else if (strcmp (sectp->name, FRAME_SECTION) == 0) |
b6af0555 | 1156 | { |
2c500098 | 1157 | dwarf2_per_objfile->frame_size = bfd_get_section_size (sectp); |
086df311 | 1158 | dwarf_frame_section = sectp; |
b6af0555 | 1159 | } |
6314a349 | 1160 | else if (strcmp (sectp->name, EH_FRAME_SECTION) == 0) |
b6af0555 | 1161 | { |
3799ccc6 EZ |
1162 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1163 | if (aflag & SEC_HAS_CONTENTS) | |
1164 | { | |
2c500098 | 1165 | dwarf2_per_objfile->eh_frame_size = bfd_get_section_size (sectp); |
3799ccc6 EZ |
1166 | dwarf_eh_frame_section = sectp; |
1167 | } | |
b6af0555 | 1168 | } |
6314a349 | 1169 | else if (strcmp (sectp->name, RANGES_SECTION) == 0) |
af34e669 | 1170 | { |
2c500098 | 1171 | dwarf2_per_objfile->ranges_size = bfd_get_section_size (sectp); |
6f10aeb1 | 1172 | dwarf_ranges_section = sectp; |
af34e669 | 1173 | } |
72dca2f5 FR |
1174 | |
1175 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) | |
1176 | && bfd_section_vma (abfd, sectp) == 0) | |
1177 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1178 | } |
1179 | ||
1180 | /* Build a partial symbol table. */ | |
1181 | ||
1182 | void | |
fba45db2 | 1183 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c | 1184 | { |
c906108c SS |
1185 | /* We definitely need the .debug_info and .debug_abbrev sections */ |
1186 | ||
6502dd73 DJ |
1187 | dwarf2_per_objfile->info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1188 | dwarf2_per_objfile->abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
188dd5d6 DJ |
1189 | |
1190 | if (dwarf_line_section) | |
6502dd73 | 1191 | dwarf2_per_objfile->line_buffer = dwarf2_read_section (objfile, dwarf_line_section); |
41ff2da1 | 1192 | else |
6502dd73 | 1193 | dwarf2_per_objfile->line_buffer = NULL; |
c906108c | 1194 | |
188dd5d6 | 1195 | if (dwarf_str_section) |
6502dd73 | 1196 | dwarf2_per_objfile->str_buffer = dwarf2_read_section (objfile, dwarf_str_section); |
4bdf3d34 | 1197 | else |
6502dd73 | 1198 | dwarf2_per_objfile->str_buffer = NULL; |
4bdf3d34 | 1199 | |
188dd5d6 | 1200 | if (dwarf_macinfo_section) |
6502dd73 | 1201 | dwarf2_per_objfile->macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1202 | dwarf_macinfo_section); |
2e276125 | 1203 | else |
6502dd73 | 1204 | dwarf2_per_objfile->macinfo_buffer = NULL; |
2e276125 | 1205 | |
188dd5d6 | 1206 | if (dwarf_ranges_section) |
6502dd73 | 1207 | dwarf2_per_objfile->ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); |
af34e669 | 1208 | else |
6502dd73 | 1209 | dwarf2_per_objfile->ranges_buffer = NULL; |
af34e669 | 1210 | |
188dd5d6 | 1211 | if (dwarf_loc_section) |
6502dd73 | 1212 | dwarf2_per_objfile->loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); |
0d53c4c4 | 1213 | else |
6502dd73 | 1214 | dwarf2_per_objfile->loc_buffer = NULL; |
0d53c4c4 | 1215 | |
ef96bde8 EZ |
1216 | if (mainline |
1217 | || (objfile->global_psymbols.size == 0 | |
1218 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1219 | { |
1220 | init_psymbol_list (objfile, 1024); | |
1221 | } | |
1222 | ||
1223 | #if 0 | |
1224 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1225 | { | |
d4f3574e | 1226 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1227 | .debug_pubnames sections */ |
1228 | ||
d4f3574e | 1229 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1230 | } |
1231 | else | |
1232 | #endif | |
1233 | /* only test this case for now */ | |
c5aa993b | 1234 | { |
c906108c | 1235 | /* In this case we have to work a bit harder */ |
d4f3574e | 1236 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1237 | } |
1238 | } | |
1239 | ||
1240 | #if 0 | |
1241 | /* Build the partial symbol table from the information in the | |
1242 | .debug_pubnames and .debug_aranges sections. */ | |
1243 | ||
1244 | static void | |
fba45db2 | 1245 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1246 | { |
1247 | bfd *abfd = objfile->obfd; | |
1248 | char *aranges_buffer, *pubnames_buffer; | |
1249 | char *aranges_ptr, *pubnames_ptr; | |
1250 | unsigned int entry_length, version, info_offset, info_size; | |
1251 | ||
1252 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1253 | dwarf_pubnames_section); |
c906108c | 1254 | pubnames_ptr = pubnames_buffer; |
6502dd73 | 1255 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames_size) |
c906108c | 1256 | { |
613e1657 | 1257 | struct comp_unit_head cu_header; |
891d2f0b | 1258 | unsigned int bytes_read; |
613e1657 KB |
1259 | |
1260 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
891d2f0b | 1261 | &bytes_read); |
613e1657 | 1262 | pubnames_ptr += bytes_read; |
c906108c SS |
1263 | version = read_1_byte (abfd, pubnames_ptr); |
1264 | pubnames_ptr += 1; | |
1265 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1266 | pubnames_ptr += 4; | |
1267 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1268 | pubnames_ptr += 4; | |
1269 | } | |
1270 | ||
1271 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1272 | dwarf_aranges_section); |
c906108c SS |
1273 | |
1274 | } | |
1275 | #endif | |
1276 | ||
107d2387 | 1277 | /* Read in the comp unit header information from the debug_info at |
917c78fc | 1278 | info_ptr. */ |
107d2387 | 1279 | |
fe1b8b76 | 1280 | static gdb_byte * |
107d2387 | 1281 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 1282 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
1283 | { |
1284 | int signed_addr; | |
891d2f0b | 1285 | unsigned int bytes_read; |
613e1657 KB |
1286 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, |
1287 | &bytes_read); | |
1288 | info_ptr += bytes_read; | |
107d2387 AC |
1289 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1290 | info_ptr += 2; | |
613e1657 KB |
1291 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1292 | &bytes_read); | |
1293 | info_ptr += bytes_read; | |
107d2387 AC |
1294 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1295 | info_ptr += 1; | |
1296 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1297 | if (signed_addr < 0) | |
8e65ff28 | 1298 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1299 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 AC |
1300 | cu_header->signed_addr_p = signed_addr; |
1301 | return info_ptr; | |
1302 | } | |
1303 | ||
fe1b8b76 JB |
1304 | static gdb_byte * |
1305 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
72bf9492 DJ |
1306 | bfd *abfd) |
1307 | { | |
fe1b8b76 | 1308 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
1309 | |
1310 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1311 | ||
2b949cb6 | 1312 | if (header->version != 2 && header->version != 3) |
8a3fe4f8 AC |
1313 | error (_("Dwarf Error: wrong version in compilation unit header " |
1314 | "(is %d, should be %d) [in module %s]"), header->version, | |
72bf9492 DJ |
1315 | 2, bfd_get_filename (abfd)); |
1316 | ||
1317 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev_size) | |
8a3fe4f8 AC |
1318 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
1319 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 DJ |
1320 | (long) header->abbrev_offset, |
1321 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1322 | bfd_get_filename (abfd)); | |
1323 | ||
1324 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
1325 | > dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
8a3fe4f8 AC |
1326 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
1327 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 DJ |
1328 | (long) header->length, |
1329 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1330 | bfd_get_filename (abfd)); | |
1331 | ||
1332 | return info_ptr; | |
1333 | } | |
1334 | ||
aaa75496 JB |
1335 | /* Allocate a new partial symtab for file named NAME and mark this new |
1336 | partial symtab as being an include of PST. */ | |
1337 | ||
1338 | static void | |
1339 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1340 | struct objfile *objfile) | |
1341 | { | |
1342 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1343 | ||
1344 | subpst->section_offsets = pst->section_offsets; | |
1345 | subpst->textlow = 0; | |
1346 | subpst->texthigh = 0; | |
1347 | ||
1348 | subpst->dependencies = (struct partial_symtab **) | |
1349 | obstack_alloc (&objfile->objfile_obstack, | |
1350 | sizeof (struct partial_symtab *)); | |
1351 | subpst->dependencies[0] = pst; | |
1352 | subpst->number_of_dependencies = 1; | |
1353 | ||
1354 | subpst->globals_offset = 0; | |
1355 | subpst->n_global_syms = 0; | |
1356 | subpst->statics_offset = 0; | |
1357 | subpst->n_static_syms = 0; | |
1358 | subpst->symtab = NULL; | |
1359 | subpst->read_symtab = pst->read_symtab; | |
1360 | subpst->readin = 0; | |
1361 | ||
1362 | /* No private part is necessary for include psymtabs. This property | |
1363 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1364 | the regular ones. */ |
58a9656e | 1365 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1366 | } |
1367 | ||
1368 | /* Read the Line Number Program data and extract the list of files | |
1369 | included by the source file represented by PST. Build an include | |
1370 | partial symtab for each of these included files. | |
1371 | ||
1372 | This procedure assumes that there *is* a Line Number Program in | |
1373 | the given CU. Callers should check that PDI->HAS_STMT_LIST is set | |
1374 | before calling this procedure. */ | |
1375 | ||
1376 | static void | |
1377 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
1378 | struct partial_die_info *pdi, | |
1379 | struct partial_symtab *pst) | |
1380 | { | |
1381 | struct objfile *objfile = cu->objfile; | |
1382 | bfd *abfd = objfile->obfd; | |
1383 | struct line_header *lh; | |
1384 | ||
1385 | lh = dwarf_decode_line_header (pdi->line_offset, abfd, cu); | |
1386 | if (lh == NULL) | |
1387 | return; /* No linetable, so no includes. */ | |
1388 | ||
1389 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1390 | ||
1391 | free_line_header (lh); | |
1392 | } | |
1393 | ||
1394 | ||
c906108c SS |
1395 | /* Build the partial symbol table by doing a quick pass through the |
1396 | .debug_info and .debug_abbrev sections. */ | |
1397 | ||
1398 | static void | |
fba45db2 | 1399 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1400 | { |
1401 | /* Instead of reading this into a big buffer, we should probably use | |
1402 | mmap() on architectures that support it. (FIXME) */ | |
1403 | bfd *abfd = objfile->obfd; | |
fe1b8b76 JB |
1404 | gdb_byte *info_ptr; |
1405 | gdb_byte *beg_of_comp_unit; | |
c906108c SS |
1406 | struct partial_die_info comp_unit_die; |
1407 | struct partial_symtab *pst; | |
ae038cb0 | 1408 | struct cleanup *back_to; |
e142c38c | 1409 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1410 | |
6502dd73 | 1411 | info_ptr = dwarf2_per_objfile->info_buffer; |
c906108c | 1412 | |
ae038cb0 DJ |
1413 | /* Any cached compilation units will be linked by the per-objfile |
1414 | read_in_chain. Make sure to free them when we're done. */ | |
1415 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
1416 | ||
10b3939b DJ |
1417 | create_all_comp_units (objfile); |
1418 | ||
6502dd73 | 1419 | /* Since the objects we're extracting from .debug_info vary in |
af703f96 | 1420 | length, only the individual functions to extract them (like |
72bf9492 | 1421 | read_comp_unit_head and load_partial_die) can really know whether |
af703f96 JB |
1422 | the buffer is large enough to hold another complete object. |
1423 | ||
6502dd73 DJ |
1424 | At the moment, they don't actually check that. If .debug_info |
1425 | holds just one extra byte after the last compilation unit's dies, | |
1426 | then read_comp_unit_head will happily read off the end of the | |
1427 | buffer. read_partial_die is similarly casual. Those functions | |
1428 | should be fixed. | |
af703f96 JB |
1429 | |
1430 | For this loop condition, simply checking whether there's any data | |
1431 | left at all should be sufficient. */ | |
6502dd73 DJ |
1432 | while (info_ptr < (dwarf2_per_objfile->info_buffer |
1433 | + dwarf2_per_objfile->info_size)) | |
c906108c | 1434 | { |
f3dd6933 | 1435 | struct cleanup *back_to_inner; |
e7c27a73 | 1436 | struct dwarf2_cu cu; |
72bf9492 DJ |
1437 | struct abbrev_info *abbrev; |
1438 | unsigned int bytes_read; | |
1439 | struct dwarf2_per_cu_data *this_cu; | |
1440 | ||
c906108c | 1441 | beg_of_comp_unit = info_ptr; |
c906108c | 1442 | |
72bf9492 DJ |
1443 | memset (&cu, 0, sizeof (cu)); |
1444 | ||
1445 | obstack_init (&cu.comp_unit_obstack); | |
1446 | ||
1447 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); | |
1448 | ||
e7c27a73 | 1449 | cu.objfile = objfile; |
72bf9492 | 1450 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, abfd); |
e7c27a73 | 1451 | |
57349743 | 1452 | /* Complete the cu_header */ |
6502dd73 | 1453 | cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
e7c27a73 DJ |
1454 | cu.header.first_die_ptr = info_ptr; |
1455 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1456 | |
e142c38c DJ |
1457 | cu.list_in_scope = &file_symbols; |
1458 | ||
c906108c | 1459 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1460 | dwarf2_read_abbrevs (abfd, &cu); |
72bf9492 | 1461 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1462 | |
10b3939b | 1463 | this_cu = dwarf2_find_comp_unit (cu.header.offset, objfile); |
ae038cb0 | 1464 | |
c906108c | 1465 | /* Read the compilation unit die */ |
72bf9492 DJ |
1466 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, &cu); |
1467 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1468 | abfd, info_ptr, &cu); | |
c906108c | 1469 | |
31ffec48 DJ |
1470 | if (comp_unit_die.tag == DW_TAG_partial_unit) |
1471 | { | |
1472 | info_ptr = (beg_of_comp_unit + cu.header.length | |
1473 | + cu.header.initial_length_size); | |
1474 | do_cleanups (back_to_inner); | |
1475 | continue; | |
1476 | } | |
1477 | ||
c906108c | 1478 | /* Set the language we're debugging */ |
e142c38c | 1479 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1480 | |
1481 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1482 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1483 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1484 | comp_unit_die.lowpc, |
1485 | objfile->global_psymbols.next, | |
1486 | objfile->static_psymbols.next); | |
1487 | ||
ae038cb0 DJ |
1488 | if (comp_unit_die.dirname) |
1489 | pst->dirname = xstrdup (comp_unit_die.dirname); | |
57c22c6c | 1490 | |
10b3939b DJ |
1491 | pst->read_symtab_private = (char *) this_cu; |
1492 | ||
613e1657 | 1493 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1494 | |
1495 | /* Store the function that reads in the rest of the symbol table */ | |
1496 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1497 | ||
10b3939b DJ |
1498 | /* If this compilation unit was already read in, free the |
1499 | cached copy in order to read it in again. This is | |
1500 | necessary because we skipped some symbols when we first | |
1501 | read in the compilation unit (see load_partial_dies). | |
1502 | This problem could be avoided, but the benefit is | |
1503 | unclear. */ | |
1504 | if (this_cu->cu != NULL) | |
1505 | free_one_cached_comp_unit (this_cu->cu); | |
ae038cb0 | 1506 | |
10b3939b | 1507 | cu.per_cu = this_cu; |
ae038cb0 | 1508 | |
10b3939b DJ |
1509 | /* Note that this is a pointer to our stack frame, being |
1510 | added to a global data structure. It will be cleaned up | |
1511 | in free_stack_comp_unit when we finish with this | |
1512 | compilation unit. */ | |
1513 | this_cu->cu = &cu; | |
ae038cb0 | 1514 | |
10b3939b | 1515 | this_cu->psymtab = pst; |
ae038cb0 | 1516 | |
c906108c SS |
1517 | /* Check if comp unit has_children. |
1518 | If so, read the rest of the partial symbols from this comp unit. | |
1519 | If not, there's no more debug_info for this comp unit. */ | |
1520 | if (comp_unit_die.has_children) | |
1521 | { | |
72bf9492 DJ |
1522 | struct partial_die_info *first_die; |
1523 | ||
91c24f0a DC |
1524 | lowpc = ((CORE_ADDR) -1); |
1525 | highpc = ((CORE_ADDR) 0); | |
1526 | ||
72bf9492 DJ |
1527 | first_die = load_partial_dies (abfd, info_ptr, 1, &cu); |
1528 | ||
1529 | scan_partial_symbols (first_die, &lowpc, &highpc, &cu); | |
c906108c | 1530 | |
91c24f0a DC |
1531 | /* If we didn't find a lowpc, set it to highpc to avoid |
1532 | complaints from `maint check'. */ | |
1533 | if (lowpc == ((CORE_ADDR) -1)) | |
1534 | lowpc = highpc; | |
72bf9492 | 1535 | |
c906108c SS |
1536 | /* If the compilation unit didn't have an explicit address range, |
1537 | then use the information extracted from its child dies. */ | |
0b010bcc | 1538 | if (! comp_unit_die.has_pc_info) |
c906108c | 1539 | { |
c5aa993b | 1540 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1541 | comp_unit_die.highpc = highpc; |
1542 | } | |
1543 | } | |
c5aa993b | 1544 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1545 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1546 | ||
1547 | pst->n_global_syms = objfile->global_psymbols.next - | |
1548 | (objfile->global_psymbols.list + pst->globals_offset); | |
1549 | pst->n_static_syms = objfile->static_psymbols.next - | |
1550 | (objfile->static_psymbols.list + pst->statics_offset); | |
1551 | sort_pst_symbols (pst); | |
1552 | ||
1553 | /* If there is already a psymtab or symtab for a file of this | |
1554 | name, remove it. (If there is a symtab, more drastic things | |
1555 | also happen.) This happens in VxWorks. */ | |
1556 | free_named_symtabs (pst->filename); | |
1557 | ||
dd373385 EZ |
1558 | info_ptr = beg_of_comp_unit + cu.header.length |
1559 | + cu.header.initial_length_size; | |
1560 | ||
aaa75496 JB |
1561 | if (comp_unit_die.has_stmt_list) |
1562 | { | |
1563 | /* Get the list of files included in the current compilation unit, | |
1564 | and build a psymtab for each of them. */ | |
1565 | dwarf2_build_include_psymtabs (&cu, &comp_unit_die, pst); | |
1566 | } | |
1567 | ||
f3dd6933 | 1568 | do_cleanups (back_to_inner); |
c906108c | 1569 | } |
ae038cb0 DJ |
1570 | do_cleanups (back_to); |
1571 | } | |
1572 | ||
1573 | /* Load the DIEs for a secondary CU into memory. */ | |
1574 | ||
1575 | static void | |
1576 | load_comp_unit (struct dwarf2_per_cu_data *this_cu, struct objfile *objfile) | |
1577 | { | |
1578 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 1579 | gdb_byte *info_ptr, *beg_of_comp_unit; |
ae038cb0 DJ |
1580 | struct partial_die_info comp_unit_die; |
1581 | struct dwarf2_cu *cu; | |
1582 | struct abbrev_info *abbrev; | |
1583 | unsigned int bytes_read; | |
1584 | struct cleanup *back_to; | |
1585 | ||
1586 | info_ptr = dwarf2_per_objfile->info_buffer + this_cu->offset; | |
1587 | beg_of_comp_unit = info_ptr; | |
1588 | ||
1589 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
1590 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
1591 | ||
1592 | obstack_init (&cu->comp_unit_obstack); | |
1593 | ||
1594 | cu->objfile = objfile; | |
1595 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, abfd); | |
1596 | ||
1597 | /* Complete the cu_header. */ | |
1598 | cu->header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; | |
1599 | cu->header.first_die_ptr = info_ptr; | |
1600 | cu->header.cu_head_ptr = beg_of_comp_unit; | |
1601 | ||
1602 | /* Read the abbrevs for this compilation unit into a table. */ | |
1603 | dwarf2_read_abbrevs (abfd, cu); | |
1604 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
1605 | ||
1606 | /* Read the compilation unit die. */ | |
1607 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1608 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1609 | abfd, info_ptr, cu); | |
1610 | ||
1611 | /* Set the language we're debugging. */ | |
1612 | set_cu_language (comp_unit_die.language, cu); | |
1613 | ||
1614 | /* Link this compilation unit into the compilation unit tree. */ | |
1615 | this_cu->cu = cu; | |
1616 | cu->per_cu = this_cu; | |
1617 | ||
1618 | /* Check if comp unit has_children. | |
1619 | If so, read the rest of the partial symbols from this comp unit. | |
1620 | If not, there's no more debug_info for this comp unit. */ | |
1621 | if (comp_unit_die.has_children) | |
1622 | load_partial_dies (abfd, info_ptr, 0, cu); | |
1623 | ||
1624 | do_cleanups (back_to); | |
1625 | } | |
1626 | ||
1627 | /* Create a list of all compilation units in OBJFILE. We do this only | |
1628 | if an inter-comp-unit reference is found; presumably if there is one, | |
1629 | there will be many, and one will occur early in the .debug_info section. | |
1630 | So there's no point in building this list incrementally. */ | |
1631 | ||
1632 | static void | |
1633 | create_all_comp_units (struct objfile *objfile) | |
1634 | { | |
1635 | int n_allocated; | |
1636 | int n_comp_units; | |
1637 | struct dwarf2_per_cu_data **all_comp_units; | |
fe1b8b76 | 1638 | gdb_byte *info_ptr = dwarf2_per_objfile->info_buffer; |
ae038cb0 DJ |
1639 | |
1640 | n_comp_units = 0; | |
1641 | n_allocated = 10; | |
1642 | all_comp_units = xmalloc (n_allocated | |
1643 | * sizeof (struct dwarf2_per_cu_data *)); | |
1644 | ||
1645 | while (info_ptr < dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1646 | { | |
1647 | struct comp_unit_head cu_header; | |
fe1b8b76 | 1648 | gdb_byte *beg_of_comp_unit; |
ae038cb0 DJ |
1649 | struct dwarf2_per_cu_data *this_cu; |
1650 | unsigned long offset; | |
891d2f0b | 1651 | unsigned int bytes_read; |
ae038cb0 DJ |
1652 | |
1653 | offset = info_ptr - dwarf2_per_objfile->info_buffer; | |
1654 | ||
1655 | /* Read just enough information to find out where the next | |
1656 | compilation unit is. */ | |
dd373385 | 1657 | cu_header.initial_length_size = 0; |
ae038cb0 DJ |
1658 | cu_header.length = read_initial_length (objfile->obfd, info_ptr, |
1659 | &cu_header, &bytes_read); | |
1660 | ||
1661 | /* Save the compilation unit for later lookup. */ | |
1662 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
1663 | sizeof (struct dwarf2_per_cu_data)); | |
1664 | memset (this_cu, 0, sizeof (*this_cu)); | |
1665 | this_cu->offset = offset; | |
1666 | this_cu->length = cu_header.length + cu_header.initial_length_size; | |
1667 | ||
1668 | if (n_comp_units == n_allocated) | |
1669 | { | |
1670 | n_allocated *= 2; | |
1671 | all_comp_units = xrealloc (all_comp_units, | |
1672 | n_allocated | |
1673 | * sizeof (struct dwarf2_per_cu_data *)); | |
1674 | } | |
1675 | all_comp_units[n_comp_units++] = this_cu; | |
1676 | ||
1677 | info_ptr = info_ptr + this_cu->length; | |
1678 | } | |
1679 | ||
1680 | dwarf2_per_objfile->all_comp_units | |
1681 | = obstack_alloc (&objfile->objfile_obstack, | |
1682 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1683 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
1684 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1685 | xfree (all_comp_units); | |
1686 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
1687 | } |
1688 | ||
72bf9492 DJ |
1689 | /* Process all loaded DIEs for compilation unit CU, starting at FIRST_DIE. |
1690 | Also set *LOWPC and *HIGHPC to the lowest and highest PC values found | |
1691 | in CU. */ | |
c906108c | 1692 | |
72bf9492 DJ |
1693 | static void |
1694 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
1695 | CORE_ADDR *highpc, struct dwarf2_cu *cu) | |
c906108c | 1696 | { |
e7c27a73 | 1697 | struct objfile *objfile = cu->objfile; |
c906108c | 1698 | bfd *abfd = objfile->obfd; |
72bf9492 | 1699 | struct partial_die_info *pdi; |
c906108c | 1700 | |
91c24f0a DC |
1701 | /* Now, march along the PDI's, descending into ones which have |
1702 | interesting children but skipping the children of the other ones, | |
1703 | until we reach the end of the compilation unit. */ | |
c906108c | 1704 | |
72bf9492 | 1705 | pdi = first_die; |
91c24f0a | 1706 | |
72bf9492 DJ |
1707 | while (pdi != NULL) |
1708 | { | |
1709 | fixup_partial_die (pdi, cu); | |
c906108c | 1710 | |
91c24f0a DC |
1711 | /* Anonymous namespaces have no name but have interesting |
1712 | children, so we need to look at them. Ditto for anonymous | |
1713 | enums. */ | |
933c6fe4 | 1714 | |
72bf9492 DJ |
1715 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
1716 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 1717 | { |
72bf9492 | 1718 | switch (pdi->tag) |
c906108c SS |
1719 | { |
1720 | case DW_TAG_subprogram: | |
72bf9492 | 1721 | if (pdi->has_pc_info) |
c906108c | 1722 | { |
72bf9492 | 1723 | if (pdi->lowpc < *lowpc) |
c906108c | 1724 | { |
72bf9492 | 1725 | *lowpc = pdi->lowpc; |
c906108c | 1726 | } |
72bf9492 | 1727 | if (pdi->highpc > *highpc) |
c906108c | 1728 | { |
72bf9492 | 1729 | *highpc = pdi->highpc; |
c906108c | 1730 | } |
72bf9492 | 1731 | if (!pdi->is_declaration) |
c906108c | 1732 | { |
72bf9492 | 1733 | add_partial_symbol (pdi, cu); |
c906108c SS |
1734 | } |
1735 | } | |
1736 | break; | |
1737 | case DW_TAG_variable: | |
1738 | case DW_TAG_typedef: | |
91c24f0a | 1739 | case DW_TAG_union_type: |
72bf9492 | 1740 | if (!pdi->is_declaration) |
63d06c5c | 1741 | { |
72bf9492 | 1742 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
1743 | } |
1744 | break; | |
c906108c SS |
1745 | case DW_TAG_class_type: |
1746 | case DW_TAG_structure_type: | |
72bf9492 | 1747 | if (!pdi->is_declaration) |
c906108c | 1748 | { |
72bf9492 | 1749 | add_partial_symbol (pdi, cu); |
c906108c SS |
1750 | } |
1751 | break; | |
91c24f0a | 1752 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
1753 | if (!pdi->is_declaration) |
1754 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
1755 | break; |
1756 | case DW_TAG_base_type: | |
a02abb62 | 1757 | case DW_TAG_subrange_type: |
c906108c | 1758 | /* File scope base type definitions are added to the partial |
c5aa993b | 1759 | symbol table. */ |
72bf9492 | 1760 | add_partial_symbol (pdi, cu); |
c906108c | 1761 | break; |
d9fa45fe | 1762 | case DW_TAG_namespace: |
72bf9492 | 1763 | add_partial_namespace (pdi, lowpc, highpc, cu); |
91c24f0a | 1764 | break; |
c906108c SS |
1765 | default: |
1766 | break; | |
1767 | } | |
1768 | } | |
1769 | ||
72bf9492 DJ |
1770 | /* If the die has a sibling, skip to the sibling. */ |
1771 | ||
1772 | pdi = pdi->die_sibling; | |
1773 | } | |
1774 | } | |
1775 | ||
1776 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 1777 | |
72bf9492 | 1778 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
1779 | name is concatenated with "::" and the partial DIE's name. For |
1780 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
1781 | Enumerators are an exception; they use the scope of their parent |
1782 | enumeration type, i.e. the name of the enumeration type is not | |
1783 | prepended to the enumerator. | |
91c24f0a | 1784 | |
72bf9492 DJ |
1785 | There are two complexities. One is DW_AT_specification; in this |
1786 | case "parent" means the parent of the target of the specification, | |
1787 | instead of the direct parent of the DIE. The other is compilers | |
1788 | which do not emit DW_TAG_namespace; in this case we try to guess | |
1789 | the fully qualified name of structure types from their members' | |
1790 | linkage names. This must be done using the DIE's children rather | |
1791 | than the children of any DW_AT_specification target. We only need | |
1792 | to do this for structures at the top level, i.e. if the target of | |
1793 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
1794 | have a parent. */ | |
1795 | ||
1796 | /* Compute the scope prefix associated with PDI's parent, in | |
1797 | compilation unit CU. The result will be allocated on CU's | |
1798 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
1799 | field. NULL is returned if no prefix is necessary. */ | |
1800 | static char * | |
1801 | partial_die_parent_scope (struct partial_die_info *pdi, | |
1802 | struct dwarf2_cu *cu) | |
1803 | { | |
1804 | char *grandparent_scope; | |
1805 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 1806 | |
72bf9492 DJ |
1807 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
1808 | then this means the parent of the specification DIE. */ | |
1809 | ||
1810 | real_pdi = pdi; | |
72bf9492 | 1811 | while (real_pdi->has_specification) |
10b3939b | 1812 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
1813 | |
1814 | parent = real_pdi->die_parent; | |
1815 | if (parent == NULL) | |
1816 | return NULL; | |
1817 | ||
1818 | if (parent->scope_set) | |
1819 | return parent->scope; | |
1820 | ||
1821 | fixup_partial_die (parent, cu); | |
1822 | ||
10b3939b | 1823 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 DJ |
1824 | |
1825 | if (parent->tag == DW_TAG_namespace | |
1826 | || parent->tag == DW_TAG_structure_type | |
1827 | || parent->tag == DW_TAG_class_type | |
1828 | || parent->tag == DW_TAG_union_type) | |
1829 | { | |
1830 | if (grandparent_scope == NULL) | |
1831 | parent->scope = parent->name; | |
1832 | else | |
987504bb JJ |
1833 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
1834 | parent->name, cu); | |
72bf9492 DJ |
1835 | } |
1836 | else if (parent->tag == DW_TAG_enumeration_type) | |
1837 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
1838 | parent->scope = grandparent_scope; | |
1839 | else | |
1840 | { | |
1841 | /* FIXME drow/2004-04-01: What should we be doing with | |
1842 | function-local names? For partial symbols, we should probably be | |
1843 | ignoring them. */ | |
1844 | complaint (&symfile_complaints, | |
e2e0b3e5 | 1845 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
1846 | parent->tag, pdi->offset); |
1847 | parent->scope = grandparent_scope; | |
c906108c SS |
1848 | } |
1849 | ||
72bf9492 DJ |
1850 | parent->scope_set = 1; |
1851 | return parent->scope; | |
1852 | } | |
1853 | ||
1854 | /* Return the fully scoped name associated with PDI, from compilation unit | |
1855 | CU. The result will be allocated with malloc. */ | |
1856 | static char * | |
1857 | partial_die_full_name (struct partial_die_info *pdi, | |
1858 | struct dwarf2_cu *cu) | |
1859 | { | |
1860 | char *parent_scope; | |
1861 | ||
1862 | parent_scope = partial_die_parent_scope (pdi, cu); | |
1863 | if (parent_scope == NULL) | |
1864 | return NULL; | |
1865 | else | |
987504bb | 1866 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
1867 | } |
1868 | ||
1869 | static void | |
72bf9492 | 1870 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 1871 | { |
e7c27a73 | 1872 | struct objfile *objfile = cu->objfile; |
c906108c | 1873 | CORE_ADDR addr = 0; |
decbce07 | 1874 | char *actual_name = NULL; |
72bf9492 | 1875 | const char *my_prefix; |
5c4e30ca | 1876 | const struct partial_symbol *psym = NULL; |
e142c38c | 1877 | CORE_ADDR baseaddr; |
72bf9492 | 1878 | int built_actual_name = 0; |
e142c38c DJ |
1879 | |
1880 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1881 | |
72bf9492 | 1882 | if (pdi_needs_namespace (pdi->tag)) |
63d06c5c | 1883 | { |
72bf9492 DJ |
1884 | actual_name = partial_die_full_name (pdi, cu); |
1885 | if (actual_name) | |
1886 | built_actual_name = 1; | |
63d06c5c DC |
1887 | } |
1888 | ||
72bf9492 DJ |
1889 | if (actual_name == NULL) |
1890 | actual_name = pdi->name; | |
1891 | ||
c906108c SS |
1892 | switch (pdi->tag) |
1893 | { | |
1894 | case DW_TAG_subprogram: | |
1895 | if (pdi->is_external) | |
1896 | { | |
38d518c9 | 1897 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1898 | mst_text, objfile); */ |
38d518c9 | 1899 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1900 | VAR_DOMAIN, LOC_BLOCK, |
1901 | &objfile->global_psymbols, | |
1902 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1903 | cu->language, objfile); |
c906108c SS |
1904 | } |
1905 | else | |
1906 | { | |
38d518c9 | 1907 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1908 | mst_file_text, objfile); */ |
38d518c9 | 1909 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1910 | VAR_DOMAIN, LOC_BLOCK, |
1911 | &objfile->static_psymbols, | |
1912 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1913 | cu->language, objfile); |
c906108c SS |
1914 | } |
1915 | break; | |
1916 | case DW_TAG_variable: | |
1917 | if (pdi->is_external) | |
1918 | { | |
1919 | /* Global Variable. | |
1920 | Don't enter into the minimal symbol tables as there is | |
1921 | a minimal symbol table entry from the ELF symbols already. | |
1922 | Enter into partial symbol table if it has a location | |
1923 | descriptor or a type. | |
1924 | If the location descriptor is missing, new_symbol will create | |
1925 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1926 | be determined from the minimal symbol table whenever the variable | |
1927 | is referenced. | |
1928 | The address for the partial symbol table entry is not | |
1929 | used by GDB, but it comes in handy for debugging partial symbol | |
1930 | table building. */ | |
1931 | ||
1932 | if (pdi->locdesc) | |
e7c27a73 | 1933 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1934 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1935 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1936 | VAR_DOMAIN, LOC_STATIC, |
1937 | &objfile->global_psymbols, | |
1938 | 0, addr + baseaddr, | |
e142c38c | 1939 | cu->language, objfile); |
c906108c SS |
1940 | } |
1941 | else | |
1942 | { | |
1943 | /* Static Variable. Skip symbols without location descriptors. */ | |
1944 | if (pdi->locdesc == NULL) | |
decbce07 MS |
1945 | { |
1946 | if (built_actual_name) | |
1947 | xfree (actual_name); | |
1948 | return; | |
1949 | } | |
e7c27a73 | 1950 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 1951 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 1952 | mst_file_data, objfile); */ |
38d518c9 | 1953 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1954 | VAR_DOMAIN, LOC_STATIC, |
1955 | &objfile->static_psymbols, | |
1956 | 0, addr + baseaddr, | |
e142c38c | 1957 | cu->language, objfile); |
c906108c SS |
1958 | } |
1959 | break; | |
1960 | case DW_TAG_typedef: | |
1961 | case DW_TAG_base_type: | |
a02abb62 | 1962 | case DW_TAG_subrange_type: |
38d518c9 | 1963 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1964 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 1965 | &objfile->static_psymbols, |
e142c38c | 1966 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1967 | break; |
72bf9492 DJ |
1968 | case DW_TAG_namespace: |
1969 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
1970 | VAR_DOMAIN, LOC_TYPEDEF, | |
1971 | &objfile->global_psymbols, | |
1972 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
1973 | break; | |
c906108c SS |
1974 | case DW_TAG_class_type: |
1975 | case DW_TAG_structure_type: | |
1976 | case DW_TAG_union_type: | |
1977 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
1978 | /* Skip external references. The DWARF standard says in the section |
1979 | about "Structure, Union, and Class Type Entries": "An incomplete | |
1980 | structure, union or class type is represented by a structure, | |
1981 | union or class entry that does not have a byte size attribute | |
1982 | and that has a DW_AT_declaration attribute." */ | |
1983 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 MS |
1984 | { |
1985 | if (built_actual_name) | |
1986 | xfree (actual_name); | |
1987 | return; | |
1988 | } | |
fa4028e9 | 1989 | |
63d06c5c DC |
1990 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
1991 | static vs. global. */ | |
38d518c9 | 1992 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1993 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
1994 | (cu->language == language_cplus |
1995 | || cu->language == language_java) | |
63d06c5c DC |
1996 | ? &objfile->global_psymbols |
1997 | : &objfile->static_psymbols, | |
e142c38c | 1998 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1999 | |
987504bb | 2000 | if (cu->language == language_cplus |
8c6860bb JB |
2001 | || cu->language == language_java |
2002 | || cu->language == language_ada) | |
c906108c | 2003 | { |
987504bb | 2004 | /* For C++ and Java, these implicitly act as typedefs as well. */ |
38d518c9 | 2005 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2006 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 2007 | &objfile->global_psymbols, |
e142c38c | 2008 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2009 | } |
2010 | break; | |
2011 | case DW_TAG_enumerator: | |
38d518c9 | 2012 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2013 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
2014 | (cu->language == language_cplus |
2015 | || cu->language == language_java) | |
f6fe98ef DJ |
2016 | ? &objfile->global_psymbols |
2017 | : &objfile->static_psymbols, | |
e142c38c | 2018 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2019 | break; |
2020 | default: | |
2021 | break; | |
2022 | } | |
5c4e30ca DC |
2023 | |
2024 | /* Check to see if we should scan the name for possible namespace | |
2025 | info. Only do this if this is C++, if we don't have namespace | |
2026 | debugging info in the file, if the psym is of an appropriate type | |
2027 | (otherwise we'll have psym == NULL), and if we actually had a | |
2028 | mangled name to begin with. */ | |
2029 | ||
72bf9492 DJ |
2030 | /* FIXME drow/2004-02-22: Why don't we do this for classes, i.e. the |
2031 | cases which do not set PSYM above? */ | |
2032 | ||
e142c38c | 2033 | if (cu->language == language_cplus |
72bf9492 | 2034 | && cu->has_namespace_info == 0 |
5c4e30ca DC |
2035 | && psym != NULL |
2036 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
2037 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
2038 | objfile); | |
72bf9492 DJ |
2039 | |
2040 | if (built_actual_name) | |
2041 | xfree (actual_name); | |
c906108c SS |
2042 | } |
2043 | ||
72bf9492 DJ |
2044 | /* Determine whether a die of type TAG living in a C++ class or |
2045 | namespace needs to have the name of the scope prepended to the | |
63d06c5c DC |
2046 | name listed in the die. */ |
2047 | ||
2048 | static int | |
72bf9492 | 2049 | pdi_needs_namespace (enum dwarf_tag tag) |
63d06c5c | 2050 | { |
63d06c5c DC |
2051 | switch (tag) |
2052 | { | |
72bf9492 | 2053 | case DW_TAG_namespace: |
63d06c5c DC |
2054 | case DW_TAG_typedef: |
2055 | case DW_TAG_class_type: | |
2056 | case DW_TAG_structure_type: | |
2057 | case DW_TAG_union_type: | |
2058 | case DW_TAG_enumeration_type: | |
2059 | case DW_TAG_enumerator: | |
2060 | return 1; | |
2061 | default: | |
2062 | return 0; | |
2063 | } | |
2064 | } | |
2065 | ||
5c4e30ca DC |
2066 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2067 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2068 | the name of the enclosing namespace. */ | |
91c24f0a | 2069 | |
72bf9492 DJ |
2070 | static void |
2071 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2072 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
72bf9492 | 2073 | struct dwarf2_cu *cu) |
91c24f0a | 2074 | { |
e7c27a73 | 2075 | struct objfile *objfile = cu->objfile; |
5c4e30ca | 2076 | |
72bf9492 | 2077 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2078 | |
72bf9492 | 2079 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2080 | |
2081 | /* Now scan partial symbols in that namespace. */ | |
2082 | ||
91c24f0a | 2083 | if (pdi->has_children) |
72bf9492 | 2084 | scan_partial_symbols (pdi->die_child, lowpc, highpc, cu); |
91c24f0a DC |
2085 | } |
2086 | ||
72bf9492 DJ |
2087 | /* See if we can figure out if the class lives in a namespace. We do |
2088 | this by looking for a member function; its demangled name will | |
2089 | contain namespace info, if there is any. */ | |
63d06c5c | 2090 | |
72bf9492 DJ |
2091 | static void |
2092 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2093 | struct dwarf2_cu *cu) | |
63d06c5c | 2094 | { |
987504bb JJ |
2095 | if ((cu->language == language_cplus |
2096 | || cu->language == language_java) | |
72bf9492 | 2097 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2098 | && struct_pdi->has_children) |
2099 | { | |
63d06c5c DC |
2100 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2101 | what template types look like, because the demangler | |
2102 | frequently doesn't give the same name as the debug info. We | |
2103 | could fix this by only using the demangled name to get the | |
134d01f1 | 2104 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2105 | |
72bf9492 DJ |
2106 | struct partial_die_info *child_pdi = struct_pdi->die_child; |
2107 | struct partial_die_info *real_pdi; | |
5d51ca54 | 2108 | |
72bf9492 DJ |
2109 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2110 | we should not do this. We'll prepend the parent's fully qualified | |
2111 | name when we create the partial symbol. */ | |
5d51ca54 | 2112 | |
72bf9492 | 2113 | real_pdi = struct_pdi; |
72bf9492 | 2114 | while (real_pdi->has_specification) |
10b3939b | 2115 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2116 | |
72bf9492 DJ |
2117 | if (real_pdi->die_parent != NULL) |
2118 | return; | |
63d06c5c | 2119 | |
72bf9492 DJ |
2120 | while (child_pdi != NULL) |
2121 | { | |
2122 | if (child_pdi->tag == DW_TAG_subprogram) | |
63d06c5c | 2123 | { |
72bf9492 | 2124 | char *actual_class_name |
31c27f77 JJ |
2125 | = language_class_name_from_physname (cu->language_defn, |
2126 | child_pdi->name); | |
63d06c5c | 2127 | if (actual_class_name != NULL) |
72bf9492 DJ |
2128 | { |
2129 | struct_pdi->name | |
2130 | = obsavestring (actual_class_name, | |
2131 | strlen (actual_class_name), | |
2132 | &cu->comp_unit_obstack); | |
2133 | xfree (actual_class_name); | |
2134 | } | |
63d06c5c DC |
2135 | break; |
2136 | } | |
72bf9492 DJ |
2137 | |
2138 | child_pdi = child_pdi->die_sibling; | |
63d06c5c DC |
2139 | } |
2140 | } | |
63d06c5c DC |
2141 | } |
2142 | ||
91c24f0a DC |
2143 | /* Read a partial die corresponding to an enumeration type. */ |
2144 | ||
72bf9492 DJ |
2145 | static void |
2146 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2147 | struct dwarf2_cu *cu) | |
91c24f0a | 2148 | { |
e7c27a73 | 2149 | struct objfile *objfile = cu->objfile; |
91c24f0a | 2150 | bfd *abfd = objfile->obfd; |
72bf9492 | 2151 | struct partial_die_info *pdi; |
91c24f0a DC |
2152 | |
2153 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2154 | add_partial_symbol (enum_pdi, cu); |
2155 | ||
2156 | pdi = enum_pdi->die_child; | |
2157 | while (pdi) | |
91c24f0a | 2158 | { |
72bf9492 | 2159 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 2160 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 2161 | else |
72bf9492 DJ |
2162 | add_partial_symbol (pdi, cu); |
2163 | pdi = pdi->die_sibling; | |
91c24f0a | 2164 | } |
91c24f0a DC |
2165 | } |
2166 | ||
4bb7a0a7 DJ |
2167 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2168 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2169 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2170 | the initial number. */ | |
2171 | ||
2172 | static struct abbrev_info * | |
fe1b8b76 | 2173 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 2174 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2175 | { |
2176 | bfd *abfd = cu->objfile->obfd; | |
2177 | unsigned int abbrev_number; | |
2178 | struct abbrev_info *abbrev; | |
2179 | ||
2180 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2181 | ||
2182 | if (abbrev_number == 0) | |
2183 | return NULL; | |
2184 | ||
2185 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2186 | if (!abbrev) | |
2187 | { | |
8a3fe4f8 | 2188 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
2189 | bfd_get_filename (abfd)); |
2190 | } | |
2191 | ||
2192 | return abbrev; | |
2193 | } | |
2194 | ||
2195 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
2196 | pointer to the end of a series of DIEs, terminated by an empty | |
2197 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
2198 | ||
fe1b8b76 JB |
2199 | static gdb_byte * |
2200 | skip_children (gdb_byte *info_ptr, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
2201 | { |
2202 | struct abbrev_info *abbrev; | |
2203 | unsigned int bytes_read; | |
2204 | ||
2205 | while (1) | |
2206 | { | |
2207 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2208 | if (abbrev == NULL) | |
2209 | return info_ptr + bytes_read; | |
2210 | else | |
2211 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
2212 | } | |
2213 | } | |
2214 | ||
2215 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
2216 | should point just after the initial uleb128 of a DIE, and the | |
2217 | abbrev corresponding to that skipped uleb128 should be passed in | |
2218 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2219 | children. */ | |
2220 | ||
fe1b8b76 JB |
2221 | static gdb_byte * |
2222 | skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, | |
4bb7a0a7 DJ |
2223 | struct dwarf2_cu *cu) |
2224 | { | |
2225 | unsigned int bytes_read; | |
2226 | struct attribute attr; | |
2227 | bfd *abfd = cu->objfile->obfd; | |
2228 | unsigned int form, i; | |
2229 | ||
2230 | for (i = 0; i < abbrev->num_attrs; i++) | |
2231 | { | |
2232 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2233 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2234 | { | |
2235 | read_attribute (&attr, &abbrev->attrs[i], | |
2236 | abfd, info_ptr, cu); | |
2237 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 2238 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 2239 | else |
6502dd73 DJ |
2240 | return dwarf2_per_objfile->info_buffer |
2241 | + dwarf2_get_ref_die_offset (&attr, cu); | |
4bb7a0a7 DJ |
2242 | } |
2243 | ||
2244 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2245 | form = abbrev->attrs[i].form; | |
2246 | skip_attribute: | |
2247 | switch (form) | |
2248 | { | |
2249 | case DW_FORM_addr: | |
2250 | case DW_FORM_ref_addr: | |
2251 | info_ptr += cu->header.addr_size; | |
2252 | break; | |
2253 | case DW_FORM_data1: | |
2254 | case DW_FORM_ref1: | |
2255 | case DW_FORM_flag: | |
2256 | info_ptr += 1; | |
2257 | break; | |
2258 | case DW_FORM_data2: | |
2259 | case DW_FORM_ref2: | |
2260 | info_ptr += 2; | |
2261 | break; | |
2262 | case DW_FORM_data4: | |
2263 | case DW_FORM_ref4: | |
2264 | info_ptr += 4; | |
2265 | break; | |
2266 | case DW_FORM_data8: | |
2267 | case DW_FORM_ref8: | |
2268 | info_ptr += 8; | |
2269 | break; | |
2270 | case DW_FORM_string: | |
2271 | read_string (abfd, info_ptr, &bytes_read); | |
2272 | info_ptr += bytes_read; | |
2273 | break; | |
2274 | case DW_FORM_strp: | |
2275 | info_ptr += cu->header.offset_size; | |
2276 | break; | |
2277 | case DW_FORM_block: | |
2278 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2279 | info_ptr += bytes_read; | |
2280 | break; | |
2281 | case DW_FORM_block1: | |
2282 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2283 | break; | |
2284 | case DW_FORM_block2: | |
2285 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2286 | break; | |
2287 | case DW_FORM_block4: | |
2288 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2289 | break; | |
2290 | case DW_FORM_sdata: | |
2291 | case DW_FORM_udata: | |
2292 | case DW_FORM_ref_udata: | |
2293 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2294 | break; | |
2295 | case DW_FORM_indirect: | |
2296 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2297 | info_ptr += bytes_read; | |
2298 | /* We need to continue parsing from here, so just go back to | |
2299 | the top. */ | |
2300 | goto skip_attribute; | |
2301 | ||
2302 | default: | |
8a3fe4f8 | 2303 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
2304 | dwarf_form_name (form), |
2305 | bfd_get_filename (abfd)); | |
2306 | } | |
2307 | } | |
2308 | ||
2309 | if (abbrev->has_children) | |
2310 | return skip_children (info_ptr, cu); | |
2311 | else | |
2312 | return info_ptr; | |
2313 | } | |
2314 | ||
2315 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
2316 | the next DIE after ORIG_PDI. */ | |
91c24f0a | 2317 | |
fe1b8b76 JB |
2318 | static gdb_byte * |
2319 | locate_pdi_sibling (struct partial_die_info *orig_pdi, gdb_byte *info_ptr, | |
e7c27a73 | 2320 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2321 | { |
2322 | /* Do we know the sibling already? */ | |
72bf9492 | 2323 | |
91c24f0a DC |
2324 | if (orig_pdi->sibling) |
2325 | return orig_pdi->sibling; | |
2326 | ||
2327 | /* Are there any children to deal with? */ | |
2328 | ||
2329 | if (!orig_pdi->has_children) | |
2330 | return info_ptr; | |
2331 | ||
4bb7a0a7 | 2332 | /* Skip the children the long way. */ |
91c24f0a | 2333 | |
4bb7a0a7 | 2334 | return skip_children (info_ptr, cu); |
91c24f0a DC |
2335 | } |
2336 | ||
c906108c SS |
2337 | /* Expand this partial symbol table into a full symbol table. */ |
2338 | ||
2339 | static void | |
fba45db2 | 2340 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2341 | { |
2342 | /* FIXME: This is barely more than a stub. */ | |
2343 | if (pst != NULL) | |
2344 | { | |
2345 | if (pst->readin) | |
2346 | { | |
8a3fe4f8 | 2347 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
2348 | } |
2349 | else | |
2350 | { | |
2351 | if (info_verbose) | |
2352 | { | |
a3f17187 | 2353 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
2354 | gdb_flush (gdb_stdout); |
2355 | } | |
2356 | ||
10b3939b DJ |
2357 | /* Restore our global data. */ |
2358 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2359 | dwarf2_objfile_data_key); | |
2360 | ||
c906108c SS |
2361 | psymtab_to_symtab_1 (pst); |
2362 | ||
2363 | /* Finish up the debug error message. */ | |
2364 | if (info_verbose) | |
a3f17187 | 2365 | printf_filtered (_("done.\n")); |
c906108c SS |
2366 | } |
2367 | } | |
2368 | } | |
2369 | ||
10b3939b DJ |
2370 | /* Add PER_CU to the queue. */ |
2371 | ||
2372 | static void | |
2373 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2374 | { | |
2375 | struct dwarf2_queue_item *item; | |
2376 | ||
2377 | per_cu->queued = 1; | |
2378 | item = xmalloc (sizeof (*item)); | |
2379 | item->per_cu = per_cu; | |
2380 | item->next = NULL; | |
2381 | ||
2382 | if (dwarf2_queue == NULL) | |
2383 | dwarf2_queue = item; | |
2384 | else | |
2385 | dwarf2_queue_tail->next = item; | |
2386 | ||
2387 | dwarf2_queue_tail = item; | |
2388 | } | |
2389 | ||
2390 | /* Process the queue. */ | |
2391 | ||
2392 | static void | |
2393 | process_queue (struct objfile *objfile) | |
2394 | { | |
2395 | struct dwarf2_queue_item *item, *next_item; | |
2396 | ||
2397 | /* Initially, there is just one item on the queue. Load its DIEs, | |
2398 | and the DIEs of any other compilation units it requires, | |
2399 | transitively. */ | |
2400 | ||
2401 | for (item = dwarf2_queue; item != NULL; item = item->next) | |
2402 | { | |
2403 | /* Read in this compilation unit. This may add new items to | |
2404 | the end of the queue. */ | |
31ffec48 | 2405 | load_full_comp_unit (item->per_cu, objfile); |
10b3939b DJ |
2406 | |
2407 | item->per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
2408 | dwarf2_per_objfile->read_in_chain = item->per_cu; | |
2409 | ||
2410 | /* If this compilation unit has already had full symbols created, | |
2411 | reset the TYPE fields in each DIE. */ | |
31ffec48 | 2412 | if (item->per_cu->type_hash) |
10b3939b DJ |
2413 | reset_die_and_siblings_types (item->per_cu->cu->dies, |
2414 | item->per_cu->cu); | |
2415 | } | |
2416 | ||
2417 | /* Now everything left on the queue needs to be read in. Process | |
2418 | them, one at a time, removing from the queue as we finish. */ | |
2419 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) | |
2420 | { | |
31ffec48 | 2421 | if (item->per_cu->psymtab && !item->per_cu->psymtab->readin) |
10b3939b DJ |
2422 | process_full_comp_unit (item->per_cu); |
2423 | ||
2424 | item->per_cu->queued = 0; | |
2425 | next_item = item->next; | |
2426 | xfree (item); | |
2427 | } | |
2428 | ||
2429 | dwarf2_queue_tail = NULL; | |
2430 | } | |
2431 | ||
2432 | /* Free all allocated queue entries. This function only releases anything if | |
2433 | an error was thrown; if the queue was processed then it would have been | |
2434 | freed as we went along. */ | |
2435 | ||
2436 | static void | |
2437 | dwarf2_release_queue (void *dummy) | |
2438 | { | |
2439 | struct dwarf2_queue_item *item, *last; | |
2440 | ||
2441 | item = dwarf2_queue; | |
2442 | while (item) | |
2443 | { | |
2444 | /* Anything still marked queued is likely to be in an | |
2445 | inconsistent state, so discard it. */ | |
2446 | if (item->per_cu->queued) | |
2447 | { | |
2448 | if (item->per_cu->cu != NULL) | |
2449 | free_one_cached_comp_unit (item->per_cu->cu); | |
2450 | item->per_cu->queued = 0; | |
2451 | } | |
2452 | ||
2453 | last = item; | |
2454 | item = item->next; | |
2455 | xfree (last); | |
2456 | } | |
2457 | ||
2458 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2459 | } | |
2460 | ||
2461 | /* Read in full symbols for PST, and anything it depends on. */ | |
2462 | ||
c906108c | 2463 | static void |
fba45db2 | 2464 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 2465 | { |
10b3939b | 2466 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 2467 | struct cleanup *back_to; |
aaa75496 JB |
2468 | int i; |
2469 | ||
2470 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2471 | if (!pst->dependencies[i]->readin) | |
2472 | { | |
2473 | /* Inform about additional files that need to be read in. */ | |
2474 | if (info_verbose) | |
2475 | { | |
a3f17187 | 2476 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
2477 | fputs_filtered (" ", gdb_stdout); |
2478 | wrap_here (""); | |
2479 | fputs_filtered ("and ", gdb_stdout); | |
2480 | wrap_here (""); | |
2481 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
2482 | wrap_here (""); /* Flush output */ | |
2483 | gdb_flush (gdb_stdout); | |
2484 | } | |
2485 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
2486 | } | |
2487 | ||
10b3939b DJ |
2488 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
2489 | ||
2490 | if (per_cu == NULL) | |
aaa75496 JB |
2491 | { |
2492 | /* It's an include file, no symbols to read for it. | |
2493 | Everything is in the parent symtab. */ | |
2494 | pst->readin = 1; | |
2495 | return; | |
2496 | } | |
c906108c | 2497 | |
10b3939b DJ |
2498 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2499 | ||
2500 | queue_comp_unit (per_cu); | |
2501 | ||
2502 | process_queue (pst->objfile); | |
2503 | ||
2504 | /* Age the cache, releasing compilation units that have not | |
2505 | been used recently. */ | |
2506 | age_cached_comp_units (); | |
2507 | ||
2508 | do_cleanups (back_to); | |
2509 | } | |
2510 | ||
2511 | /* Load the DIEs associated with PST and PER_CU into memory. */ | |
2512 | ||
2513 | static struct dwarf2_cu * | |
31ffec48 | 2514 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 2515 | { |
31ffec48 | 2516 | bfd *abfd = objfile->obfd; |
10b3939b DJ |
2517 | struct dwarf2_cu *cu; |
2518 | unsigned long offset; | |
fe1b8b76 | 2519 | gdb_byte *info_ptr; |
10b3939b DJ |
2520 | struct cleanup *back_to, *free_cu_cleanup; |
2521 | struct attribute *attr; | |
2522 | CORE_ADDR baseaddr; | |
6502dd73 | 2523 | |
c906108c | 2524 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 2525 | offset = per_cu->offset; |
6502dd73 DJ |
2526 | |
2527 | info_ptr = dwarf2_per_objfile->info_buffer + offset; | |
63d06c5c | 2528 | |
10b3939b DJ |
2529 | cu = xmalloc (sizeof (struct dwarf2_cu)); |
2530 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
c906108c | 2531 | |
10b3939b DJ |
2532 | /* If an error occurs while loading, release our storage. */ |
2533 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 2534 | |
31ffec48 | 2535 | cu->objfile = objfile; |
e7c27a73 | 2536 | |
c906108c | 2537 | /* read in the comp_unit header */ |
10b3939b | 2538 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c SS |
2539 | |
2540 | /* Read the abbrevs for this compilation unit */ | |
10b3939b DJ |
2541 | dwarf2_read_abbrevs (abfd, cu); |
2542 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2543 | ||
2544 | cu->header.offset = offset; | |
c906108c | 2545 | |
10b3939b DJ |
2546 | cu->per_cu = per_cu; |
2547 | per_cu->cu = cu; | |
e142c38c | 2548 | |
10b3939b DJ |
2549 | /* We use this obstack for block values in dwarf_alloc_block. */ |
2550 | obstack_init (&cu->comp_unit_obstack); | |
2551 | ||
2552 | cu->dies = read_comp_unit (info_ptr, abfd, cu); | |
2553 | ||
2554 | /* We try not to read any attributes in this function, because not | |
2555 | all objfiles needed for references have been loaded yet, and symbol | |
2556 | table processing isn't initialized. But we have to set the CU language, | |
2557 | or we won't be able to build types correctly. */ | |
2558 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
2559 | if (attr) | |
2560 | set_cu_language (DW_UNSND (attr), cu); | |
2561 | else | |
2562 | set_cu_language (language_minimal, cu); | |
2563 | ||
2564 | do_cleanups (back_to); | |
e142c38c | 2565 | |
10b3939b DJ |
2566 | /* We've successfully allocated this compilation unit. Let our caller |
2567 | clean it up when finished with it. */ | |
2568 | discard_cleanups (free_cu_cleanup); | |
c906108c | 2569 | |
10b3939b DJ |
2570 | return cu; |
2571 | } | |
2572 | ||
2573 | /* Generate full symbol information for PST and CU, whose DIEs have | |
2574 | already been loaded into memory. */ | |
2575 | ||
2576 | static void | |
2577 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2578 | { | |
2579 | struct partial_symtab *pst = per_cu->psymtab; | |
2580 | struct dwarf2_cu *cu = per_cu->cu; | |
2581 | struct objfile *objfile = pst->objfile; | |
2582 | bfd *abfd = objfile->obfd; | |
2583 | CORE_ADDR lowpc, highpc; | |
2584 | struct symtab *symtab; | |
2585 | struct cleanup *back_to; | |
2586 | struct attribute *attr; | |
2587 | CORE_ADDR baseaddr; | |
2588 | ||
2589 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2590 | ||
2591 | /* We're in the global namespace. */ | |
2592 | processing_current_prefix = ""; | |
2593 | ||
2594 | buildsym_init (); | |
2595 | back_to = make_cleanup (really_free_pendings, NULL); | |
2596 | ||
2597 | cu->list_in_scope = &file_symbols; | |
c906108c | 2598 | |
0d53c4c4 DJ |
2599 | /* Find the base address of the compilation unit for range lists and |
2600 | location lists. It will normally be specified by DW_AT_low_pc. | |
2601 | In DWARF-3 draft 4, the base address could be overridden by | |
2602 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2603 | compilation units with discontinuous ranges. */ | |
2604 | ||
10b3939b DJ |
2605 | cu->header.base_known = 0; |
2606 | cu->header.base_address = 0; | |
0d53c4c4 | 2607 | |
10b3939b | 2608 | attr = dwarf2_attr (cu->dies, DW_AT_entry_pc, cu); |
0d53c4c4 DJ |
2609 | if (attr) |
2610 | { | |
10b3939b DJ |
2611 | cu->header.base_address = DW_ADDR (attr); |
2612 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2613 | } |
2614 | else | |
2615 | { | |
10b3939b | 2616 | attr = dwarf2_attr (cu->dies, DW_AT_low_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 | } | |
2623 | ||
c906108c | 2624 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 2625 | process_die (cu->dies, cu); |
c906108c | 2626 | |
fae299cd DC |
2627 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
2628 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
2629 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 2630 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 2631 | |
613e1657 | 2632 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2633 | |
2634 | /* Set symtab language to language from DW_AT_language. | |
2635 | If the compilation is from a C file generated by language preprocessors, | |
2636 | do not set the language if it was already deduced by start_subfile. */ | |
2637 | if (symtab != NULL | |
10b3939b | 2638 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 2639 | { |
10b3939b | 2640 | symtab->language = cu->language; |
c906108c SS |
2641 | } |
2642 | pst->symtab = symtab; | |
2643 | pst->readin = 1; | |
c906108c SS |
2644 | |
2645 | do_cleanups (back_to); | |
2646 | } | |
2647 | ||
2648 | /* Process a die and its children. */ | |
2649 | ||
2650 | static void | |
e7c27a73 | 2651 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2652 | { |
2653 | switch (die->tag) | |
2654 | { | |
2655 | case DW_TAG_padding: | |
2656 | break; | |
2657 | case DW_TAG_compile_unit: | |
e7c27a73 | 2658 | read_file_scope (die, cu); |
c906108c SS |
2659 | break; |
2660 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
2661 | read_subroutine_type (die, cu); |
2662 | read_func_scope (die, cu); | |
c906108c SS |
2663 | break; |
2664 | case DW_TAG_inlined_subroutine: | |
2665 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2666 | They could be used to set breakpoints on all inlined instances |
2667 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2668 | break; |
2669 | case DW_TAG_lexical_block: | |
14898363 L |
2670 | case DW_TAG_try_block: |
2671 | case DW_TAG_catch_block: | |
e7c27a73 | 2672 | read_lexical_block_scope (die, cu); |
c906108c SS |
2673 | break; |
2674 | case DW_TAG_class_type: | |
2675 | case DW_TAG_structure_type: | |
2676 | case DW_TAG_union_type: | |
134d01f1 DJ |
2677 | read_structure_type (die, cu); |
2678 | process_structure_scope (die, cu); | |
c906108c SS |
2679 | break; |
2680 | case DW_TAG_enumeration_type: | |
134d01f1 DJ |
2681 | read_enumeration_type (die, cu); |
2682 | process_enumeration_scope (die, cu); | |
c906108c | 2683 | break; |
134d01f1 DJ |
2684 | |
2685 | /* FIXME drow/2004-03-14: These initialize die->type, but do not create | |
2686 | a symbol or process any children. Therefore it doesn't do anything | |
2687 | that won't be done on-demand by read_type_die. */ | |
c906108c | 2688 | case DW_TAG_subroutine_type: |
e7c27a73 | 2689 | read_subroutine_type (die, cu); |
c906108c | 2690 | break; |
72019c9c GM |
2691 | case DW_TAG_set_type: |
2692 | read_set_type (die, cu); | |
2693 | break; | |
c906108c | 2694 | case DW_TAG_array_type: |
e7c27a73 | 2695 | read_array_type (die, cu); |
c906108c SS |
2696 | break; |
2697 | case DW_TAG_pointer_type: | |
e7c27a73 | 2698 | read_tag_pointer_type (die, cu); |
c906108c SS |
2699 | break; |
2700 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 2701 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
2702 | break; |
2703 | case DW_TAG_reference_type: | |
e7c27a73 | 2704 | read_tag_reference_type (die, cu); |
c906108c SS |
2705 | break; |
2706 | case DW_TAG_string_type: | |
e7c27a73 | 2707 | read_tag_string_type (die, cu); |
c906108c | 2708 | break; |
134d01f1 DJ |
2709 | /* END FIXME */ |
2710 | ||
c906108c | 2711 | case DW_TAG_base_type: |
e7c27a73 | 2712 | read_base_type (die, cu); |
134d01f1 DJ |
2713 | /* Add a typedef symbol for the type definition, if it has a |
2714 | DW_AT_name. */ | |
2715 | new_symbol (die, die->type, cu); | |
c906108c | 2716 | break; |
a02abb62 JB |
2717 | case DW_TAG_subrange_type: |
2718 | read_subrange_type (die, cu); | |
134d01f1 DJ |
2719 | /* Add a typedef symbol for the type definition, if it has a |
2720 | DW_AT_name. */ | |
2721 | new_symbol (die, die->type, cu); | |
a02abb62 | 2722 | break; |
c906108c | 2723 | case DW_TAG_common_block: |
e7c27a73 | 2724 | read_common_block (die, cu); |
c906108c SS |
2725 | break; |
2726 | case DW_TAG_common_inclusion: | |
2727 | break; | |
d9fa45fe | 2728 | case DW_TAG_namespace: |
63d06c5c | 2729 | processing_has_namespace_info = 1; |
e7c27a73 | 2730 | read_namespace (die, cu); |
d9fa45fe DC |
2731 | break; |
2732 | case DW_TAG_imported_declaration: | |
2733 | case DW_TAG_imported_module: | |
2734 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2735 | information contained in these. DW_TAG_imported_declaration | |
2736 | dies shouldn't have children; DW_TAG_imported_module dies | |
2737 | shouldn't in the C++ case, but conceivably could in the | |
2738 | Fortran case, so we'll have to replace this gdb_assert if | |
2739 | Fortran compilers start generating that info. */ | |
63d06c5c | 2740 | processing_has_namespace_info = 1; |
639d11d3 | 2741 | gdb_assert (die->child == NULL); |
d9fa45fe | 2742 | break; |
c906108c | 2743 | default: |
e7c27a73 | 2744 | new_symbol (die, NULL, cu); |
c906108c SS |
2745 | break; |
2746 | } | |
2747 | } | |
2748 | ||
5fb290d7 | 2749 | static void |
e142c38c | 2750 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2751 | { |
e142c38c | 2752 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2753 | } |
2754 | ||
cb1df416 DJ |
2755 | static void |
2756 | free_cu_line_header (void *arg) | |
2757 | { | |
2758 | struct dwarf2_cu *cu = arg; | |
2759 | ||
2760 | free_line_header (cu->line_header); | |
2761 | cu->line_header = NULL; | |
2762 | } | |
2763 | ||
c906108c | 2764 | static void |
e7c27a73 | 2765 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2766 | { |
e7c27a73 DJ |
2767 | struct objfile *objfile = cu->objfile; |
2768 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2769 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2770 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2771 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2772 | struct attribute *attr; | |
e1024ff1 | 2773 | char *name = NULL; |
c906108c SS |
2774 | char *comp_dir = NULL; |
2775 | struct die_info *child_die; | |
2776 | bfd *abfd = objfile->obfd; | |
debd256d | 2777 | struct line_header *line_header = 0; |
e142c38c DJ |
2778 | CORE_ADDR baseaddr; |
2779 | ||
2780 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2781 | |
fae299cd | 2782 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2783 | |
2784 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2785 | from finish_block. */ | |
2acceee2 | 2786 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2787 | lowpc = highpc; |
2788 | lowpc += baseaddr; | |
2789 | highpc += baseaddr; | |
2790 | ||
39cbfefa DJ |
2791 | /* Find the filename. Do not use dwarf2_name here, since the filename |
2792 | is not a source language identifier. */ | |
e142c38c | 2793 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2794 | if (attr) |
2795 | { | |
2796 | name = DW_STRING (attr); | |
2797 | } | |
e1024ff1 | 2798 | |
e142c38c | 2799 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c | 2800 | if (attr) |
e1024ff1 DJ |
2801 | comp_dir = DW_STRING (attr); |
2802 | else if (name != NULL && IS_ABSOLUTE_PATH (name)) | |
c906108c | 2803 | { |
e1024ff1 DJ |
2804 | comp_dir = ldirname (name); |
2805 | if (comp_dir != NULL) | |
2806 | make_cleanup (xfree, comp_dir); | |
2807 | } | |
2808 | if (comp_dir != NULL) | |
2809 | { | |
2810 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2811 | directory, get rid of it. */ | |
2812 | char *cp = strchr (comp_dir, ':'); | |
c906108c | 2813 | |
e1024ff1 DJ |
2814 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') |
2815 | comp_dir = cp + 1; | |
c906108c SS |
2816 | } |
2817 | ||
e1024ff1 DJ |
2818 | if (name == NULL) |
2819 | name = "<unknown>"; | |
2820 | ||
e142c38c | 2821 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2822 | if (attr) |
2823 | { | |
e142c38c | 2824 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2825 | } |
2826 | ||
b0f35d58 DL |
2827 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
2828 | if (attr) | |
2829 | cu->producer = DW_STRING (attr); | |
303b6f5d | 2830 | |
c906108c SS |
2831 | /* We assume that we're processing GCC output. */ |
2832 | processing_gcc_compilation = 2; | |
c906108c | 2833 | |
c906108c SS |
2834 | start_symtab (name, comp_dir, lowpc); |
2835 | record_debugformat ("DWARF 2"); | |
303b6f5d | 2836 | record_producer (cu->producer); |
c906108c | 2837 | |
e142c38c | 2838 | initialize_cu_func_list (cu); |
c906108c | 2839 | |
cb1df416 DJ |
2840 | /* Decode line number information if present. We do this before |
2841 | processing child DIEs, so that the line header table is available | |
2842 | for DW_AT_decl_file. */ | |
e142c38c | 2843 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2844 | if (attr) |
2845 | { | |
debd256d | 2846 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2847 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2848 | if (line_header) |
2849 | { | |
cb1df416 DJ |
2850 | cu->line_header = line_header; |
2851 | make_cleanup (free_cu_line_header, cu); | |
aaa75496 | 2852 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 2853 | } |
5fb290d7 | 2854 | } |
debd256d | 2855 | |
cb1df416 DJ |
2856 | /* Process all dies in compilation unit. */ |
2857 | if (die->child != NULL) | |
2858 | { | |
2859 | child_die = die->child; | |
2860 | while (child_die && child_die->tag) | |
2861 | { | |
2862 | process_die (child_die, cu); | |
2863 | child_die = sibling_die (child_die); | |
2864 | } | |
2865 | } | |
2866 | ||
2e276125 JB |
2867 | /* Decode macro information, if present. Dwarf 2 macro information |
2868 | refers to information in the line number info statement program | |
2869 | header, so we can only read it if we've read the header | |
2870 | successfully. */ | |
e142c38c | 2871 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2872 | if (attr && line_header) |
2e276125 JB |
2873 | { |
2874 | unsigned int macro_offset = DW_UNSND (attr); | |
2875 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2876 | comp_dir, abfd, cu); |
2e276125 | 2877 | } |
debd256d | 2878 | do_cleanups (back_to); |
5fb290d7 DJ |
2879 | } |
2880 | ||
2881 | static void | |
e142c38c DJ |
2882 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2883 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2884 | { |
2885 | struct function_range *thisfn; | |
2886 | ||
2887 | thisfn = (struct function_range *) | |
7b5a2f43 | 2888 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
2889 | thisfn->name = name; |
2890 | thisfn->lowpc = lowpc; | |
2891 | thisfn->highpc = highpc; | |
2892 | thisfn->seen_line = 0; | |
2893 | thisfn->next = NULL; | |
2894 | ||
e142c38c DJ |
2895 | if (cu->last_fn == NULL) |
2896 | cu->first_fn = thisfn; | |
5fb290d7 | 2897 | else |
e142c38c | 2898 | cu->last_fn->next = thisfn; |
5fb290d7 | 2899 | |
e142c38c | 2900 | cu->last_fn = thisfn; |
c906108c SS |
2901 | } |
2902 | ||
2903 | static void | |
e7c27a73 | 2904 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2905 | { |
e7c27a73 | 2906 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2907 | struct context_stack *new; |
c906108c SS |
2908 | CORE_ADDR lowpc; |
2909 | CORE_ADDR highpc; | |
2910 | struct die_info *child_die; | |
2911 | struct attribute *attr; | |
2912 | char *name; | |
fdde2d81 DC |
2913 | const char *previous_prefix = processing_current_prefix; |
2914 | struct cleanup *back_to = NULL; | |
e142c38c | 2915 | CORE_ADDR baseaddr; |
801e3a5b | 2916 | struct block *block; |
c906108c | 2917 | |
e142c38c DJ |
2918 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2919 | ||
2920 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2921 | |
2922 | /* Ignore functions with missing or empty names and functions with | |
2923 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2924 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2925 | return; |
2926 | ||
987504bb JJ |
2927 | if (cu->language == language_cplus |
2928 | || cu->language == language_java) | |
fdde2d81 | 2929 | { |
086ed43d | 2930 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2931 | |
2a35147e JB |
2932 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2933 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2934 | given the code | |
2935 | ||
2936 | namespace N { | |
2937 | void foo() { | |
2938 | // Definition of N::foo. | |
2939 | } | |
2940 | } | |
2941 | ||
2942 | then we'll have a tree of DIEs like this: | |
2943 | ||
2944 | 1: DW_TAG_compile_unit | |
2945 | 2: DW_TAG_namespace // N | |
2946 | 3: DW_TAG_subprogram // declaration of N::foo | |
2947 | 4: DW_TAG_subprogram // definition of N::foo | |
2948 | DW_AT_specification // refers to die #3 | |
2949 | ||
2950 | Thus, when processing die #4, we have to pretend that we're | |
2951 | in the context of its DW_AT_specification, namely the contex | |
2952 | of die #3. */ | |
fdde2d81 DC |
2953 | |
2954 | if (spec_die != NULL) | |
2955 | { | |
e142c38c | 2956 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
2957 | processing_current_prefix = specification_prefix; |
2958 | back_to = make_cleanup (xfree, specification_prefix); | |
2959 | } | |
2960 | } | |
2961 | ||
c906108c SS |
2962 | lowpc += baseaddr; |
2963 | highpc += baseaddr; | |
2964 | ||
5fb290d7 | 2965 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 2966 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 2967 | |
c906108c | 2968 | new = push_context (0, lowpc); |
e7c27a73 | 2969 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 2970 | |
4cecd739 DJ |
2971 | /* If there is a location expression for DW_AT_frame_base, record |
2972 | it. */ | |
e142c38c | 2973 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 2974 | if (attr) |
c034e007 AC |
2975 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
2976 | expression is being recorded directly in the function's symbol | |
2977 | and not in a separate frame-base object. I guess this hack is | |
2978 | to avoid adding some sort of frame-base adjunct/annex to the | |
2979 | function's symbol :-(. The problem with doing this is that it | |
2980 | results in a function symbol with a location expression that | |
2981 | has nothing to do with the location of the function, ouch! The | |
2982 | relationship should be: a function's symbol has-a frame base; a | |
2983 | frame-base has-a location expression. */ | |
e7c27a73 | 2984 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 2985 | |
e142c38c | 2986 | cu->list_in_scope = &local_symbols; |
c906108c | 2987 | |
639d11d3 | 2988 | if (die->child != NULL) |
c906108c | 2989 | { |
639d11d3 | 2990 | child_die = die->child; |
c906108c SS |
2991 | while (child_die && child_die->tag) |
2992 | { | |
e7c27a73 | 2993 | process_die (child_die, cu); |
c906108c SS |
2994 | child_die = sibling_die (child_die); |
2995 | } | |
2996 | } | |
2997 | ||
2998 | new = pop_context (); | |
2999 | /* Make a block for the local symbols within. */ | |
801e3a5b JB |
3000 | block = finish_block (new->name, &local_symbols, new->old_blocks, |
3001 | lowpc, highpc, objfile); | |
3002 | ||
3003 | /* If we have address ranges, record them. */ | |
3004 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
208d8187 JB |
3005 | |
3006 | /* In C++, we can have functions nested inside functions (e.g., when | |
3007 | a function declares a class that has methods). This means that | |
3008 | when we finish processing a function scope, we may need to go | |
3009 | back to building a containing block's symbol lists. */ | |
3010 | local_symbols = new->locals; | |
3011 | param_symbols = new->params; | |
3012 | ||
921e78cf JB |
3013 | /* If we've finished processing a top-level function, subsequent |
3014 | symbols go in the file symbol list. */ | |
3015 | if (outermost_context_p ()) | |
e142c38c | 3016 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
3017 | |
3018 | processing_current_prefix = previous_prefix; | |
3019 | if (back_to != NULL) | |
3020 | do_cleanups (back_to); | |
c906108c SS |
3021 | } |
3022 | ||
3023 | /* Process all the DIES contained within a lexical block scope. Start | |
3024 | a new scope, process the dies, and then close the scope. */ | |
3025 | ||
3026 | static void | |
e7c27a73 | 3027 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3028 | { |
e7c27a73 | 3029 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 3030 | struct context_stack *new; |
c906108c SS |
3031 | CORE_ADDR lowpc, highpc; |
3032 | struct die_info *child_die; | |
e142c38c DJ |
3033 | CORE_ADDR baseaddr; |
3034 | ||
3035 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3036 | |
3037 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
3038 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
3039 | as multiple lexical blocks? Handling children in a sane way would | |
3040 | be nasty. Might be easier to properly extend generic blocks to | |
3041 | describe ranges. */ | |
e7c27a73 | 3042 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
3043 | return; |
3044 | lowpc += baseaddr; | |
3045 | highpc += baseaddr; | |
3046 | ||
3047 | push_context (0, lowpc); | |
639d11d3 | 3048 | if (die->child != NULL) |
c906108c | 3049 | { |
639d11d3 | 3050 | child_die = die->child; |
c906108c SS |
3051 | while (child_die && child_die->tag) |
3052 | { | |
e7c27a73 | 3053 | process_die (child_die, cu); |
c906108c SS |
3054 | child_die = sibling_die (child_die); |
3055 | } | |
3056 | } | |
3057 | new = pop_context (); | |
3058 | ||
3059 | if (local_symbols != NULL) | |
3060 | { | |
801e3a5b JB |
3061 | struct block *block |
3062 | = finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
3063 | highpc, objfile); | |
3064 | ||
3065 | /* Note that recording ranges after traversing children, as we | |
3066 | do here, means that recording a parent's ranges entails | |
3067 | walking across all its children's ranges as they appear in | |
3068 | the address map, which is quadratic behavior. | |
3069 | ||
3070 | It would be nicer to record the parent's ranges before | |
3071 | traversing its children, simply overriding whatever you find | |
3072 | there. But since we don't even decide whether to create a | |
3073 | block until after we've traversed its children, that's hard | |
3074 | to do. */ | |
3075 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c SS |
3076 | } |
3077 | local_symbols = new->locals; | |
3078 | } | |
3079 | ||
43039443 JK |
3080 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. |
3081 | Return 1 if the attributes are present and valid, otherwise, return 0. */ | |
3082 | ||
3083 | static int | |
3084 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
3085 | CORE_ADDR *high_return, struct dwarf2_cu *cu) | |
3086 | { | |
3087 | struct objfile *objfile = cu->objfile; | |
3088 | struct comp_unit_head *cu_header = &cu->header; | |
3089 | bfd *obfd = objfile->obfd; | |
3090 | unsigned int addr_size = cu_header->addr_size; | |
3091 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3092 | /* Base address selection entry. */ | |
3093 | CORE_ADDR base; | |
3094 | int found_base; | |
3095 | unsigned int dummy; | |
3096 | gdb_byte *buffer; | |
3097 | CORE_ADDR marker; | |
3098 | int low_set; | |
3099 | CORE_ADDR low = 0; | |
3100 | CORE_ADDR high = 0; | |
3101 | ||
3102 | found_base = cu_header->base_known; | |
3103 | base = cu_header->base_address; | |
3104 | ||
3105 | if (offset >= dwarf2_per_objfile->ranges_size) | |
3106 | { | |
3107 | complaint (&symfile_complaints, | |
3108 | _("Offset %d out of bounds for DW_AT_ranges attribute"), | |
3109 | offset); | |
3110 | return 0; | |
3111 | } | |
3112 | buffer = dwarf2_per_objfile->ranges_buffer + offset; | |
3113 | ||
3114 | /* Read in the largest possible address. */ | |
3115 | marker = read_address (obfd, buffer, cu, &dummy); | |
3116 | if ((marker & mask) == mask) | |
3117 | { | |
3118 | /* If we found the largest possible address, then | |
3119 | read the base address. */ | |
3120 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
3121 | buffer += 2 * addr_size; | |
3122 | offset += 2 * addr_size; | |
3123 | found_base = 1; | |
3124 | } | |
3125 | ||
3126 | low_set = 0; | |
3127 | ||
3128 | while (1) | |
3129 | { | |
3130 | CORE_ADDR range_beginning, range_end; | |
3131 | ||
3132 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
3133 | buffer += addr_size; | |
3134 | range_end = read_address (obfd, buffer, cu, &dummy); | |
3135 | buffer += addr_size; | |
3136 | offset += 2 * addr_size; | |
3137 | ||
3138 | /* An end of list marker is a pair of zero addresses. */ | |
3139 | if (range_beginning == 0 && range_end == 0) | |
3140 | /* Found the end of list entry. */ | |
3141 | break; | |
3142 | ||
3143 | /* Each base address selection entry is a pair of 2 values. | |
3144 | The first is the largest possible address, the second is | |
3145 | the base address. Check for a base address here. */ | |
3146 | if ((range_beginning & mask) == mask) | |
3147 | { | |
3148 | /* If we found the largest possible address, then | |
3149 | read the base address. */ | |
3150 | base = read_address (obfd, buffer + addr_size, cu, &dummy); | |
3151 | found_base = 1; | |
3152 | continue; | |
3153 | } | |
3154 | ||
3155 | if (!found_base) | |
3156 | { | |
3157 | /* We have no valid base address for the ranges | |
3158 | data. */ | |
3159 | complaint (&symfile_complaints, | |
3160 | _("Invalid .debug_ranges data (no base address)")); | |
3161 | return 0; | |
3162 | } | |
3163 | ||
3164 | range_beginning += base; | |
3165 | range_end += base; | |
3166 | ||
3167 | /* FIXME: This is recording everything as a low-high | |
3168 | segment of consecutive addresses. We should have a | |
3169 | data structure for discontiguous block ranges | |
3170 | instead. */ | |
3171 | if (! low_set) | |
3172 | { | |
3173 | low = range_beginning; | |
3174 | high = range_end; | |
3175 | low_set = 1; | |
3176 | } | |
3177 | else | |
3178 | { | |
3179 | if (range_beginning < low) | |
3180 | low = range_beginning; | |
3181 | if (range_end > high) | |
3182 | high = range_end; | |
3183 | } | |
3184 | } | |
3185 | ||
3186 | if (! low_set) | |
3187 | /* If the first entry is an end-of-list marker, the range | |
3188 | describes an empty scope, i.e. no instructions. */ | |
3189 | return 0; | |
3190 | ||
3191 | if (low_return) | |
3192 | *low_return = low; | |
3193 | if (high_return) | |
3194 | *high_return = high; | |
3195 | return 1; | |
3196 | } | |
3197 | ||
af34e669 DJ |
3198 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
3199 | are present and valid, otherwise, return 0. Return -1 if the range is | |
3200 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 3201 | static int |
af34e669 | 3202 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 3203 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c SS |
3204 | { |
3205 | struct attribute *attr; | |
af34e669 DJ |
3206 | CORE_ADDR low = 0; |
3207 | CORE_ADDR high = 0; | |
3208 | int ret = 0; | |
c906108c | 3209 | |
e142c38c | 3210 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 3211 | if (attr) |
af34e669 DJ |
3212 | { |
3213 | high = DW_ADDR (attr); | |
e142c38c | 3214 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
3215 | if (attr) |
3216 | low = DW_ADDR (attr); | |
3217 | else | |
3218 | /* Found high w/o low attribute. */ | |
3219 | return 0; | |
3220 | ||
3221 | /* Found consecutive range of addresses. */ | |
3222 | ret = 1; | |
3223 | } | |
c906108c | 3224 | else |
af34e669 | 3225 | { |
e142c38c | 3226 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
3227 | if (attr != NULL) |
3228 | { | |
af34e669 | 3229 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 3230 | .debug_ranges section. */ |
43039443 | 3231 | if (!dwarf2_ranges_read (DW_UNSND (attr), &low, &high, cu)) |
af34e669 | 3232 | return 0; |
43039443 | 3233 | /* Found discontinuous range of addresses. */ |
af34e669 DJ |
3234 | ret = -1; |
3235 | } | |
3236 | } | |
c906108c SS |
3237 | |
3238 | if (high < low) | |
3239 | return 0; | |
3240 | ||
3241 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
3242 | eliminate duplicate copies of functions and vtables and such. | |
3243 | The linker will arbitrarily choose one and discard the others. | |
3244 | The AT_*_pc values for such functions refer to local labels in | |
3245 | these sections. If the section from that file was discarded, the | |
3246 | labels are not in the output, so the relocs get a value of 0. | |
3247 | If this is a discarded function, mark the pc bounds as invalid, | |
3248 | so that GDB will ignore it. */ | |
72dca2f5 | 3249 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
3250 | return 0; |
3251 | ||
3252 | *lowpc = low; | |
3253 | *highpc = high; | |
af34e669 | 3254 | return ret; |
c906108c SS |
3255 | } |
3256 | ||
fae299cd DC |
3257 | /* Get the low and high pc's represented by the scope DIE, and store |
3258 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
3259 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
3260 | ||
3261 | static void | |
3262 | get_scope_pc_bounds (struct die_info *die, | |
3263 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3264 | struct dwarf2_cu *cu) | |
3265 | { | |
3266 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
3267 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
3268 | CORE_ADDR current_low, current_high; | |
3269 | ||
3270 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
3271 | { | |
3272 | best_low = current_low; | |
3273 | best_high = current_high; | |
3274 | } | |
3275 | else | |
3276 | { | |
3277 | struct die_info *child = die->child; | |
3278 | ||
3279 | while (child && child->tag) | |
3280 | { | |
3281 | switch (child->tag) { | |
3282 | case DW_TAG_subprogram: | |
3283 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
3284 | { | |
3285 | best_low = min (best_low, current_low); | |
3286 | best_high = max (best_high, current_high); | |
3287 | } | |
3288 | break; | |
3289 | case DW_TAG_namespace: | |
3290 | /* FIXME: carlton/2004-01-16: Should we do this for | |
3291 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
3292 | that current GCC's always emit the DIEs corresponding | |
3293 | to definitions of methods of classes as children of a | |
3294 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
3295 | the DIEs giving the declarations, which could be | |
3296 | anywhere). But I don't see any reason why the | |
3297 | standards says that they have to be there. */ | |
3298 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
3299 | ||
3300 | if (current_low != ((CORE_ADDR) -1)) | |
3301 | { | |
3302 | best_low = min (best_low, current_low); | |
3303 | best_high = max (best_high, current_high); | |
3304 | } | |
3305 | break; | |
3306 | default: | |
3307 | /* Ignore. */ | |
3308 | break; | |
3309 | } | |
3310 | ||
3311 | child = sibling_die (child); | |
3312 | } | |
3313 | } | |
3314 | ||
3315 | *lowpc = best_low; | |
3316 | *highpc = best_high; | |
3317 | } | |
3318 | ||
801e3a5b JB |
3319 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
3320 | in DIE. */ | |
3321 | static void | |
3322 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
3323 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
3324 | { | |
3325 | struct attribute *attr; | |
3326 | ||
3327 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); | |
3328 | if (attr) | |
3329 | { | |
3330 | CORE_ADDR high = DW_ADDR (attr); | |
3331 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
3332 | if (attr) | |
3333 | { | |
3334 | CORE_ADDR low = DW_ADDR (attr); | |
3335 | record_block_range (block, baseaddr + low, baseaddr + high - 1); | |
3336 | } | |
3337 | } | |
3338 | ||
3339 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
3340 | if (attr) | |
3341 | { | |
3342 | bfd *obfd = cu->objfile->obfd; | |
3343 | ||
3344 | /* The value of the DW_AT_ranges attribute is the offset of the | |
3345 | address range list in the .debug_ranges section. */ | |
3346 | unsigned long offset = DW_UNSND (attr); | |
3347 | gdb_byte *buffer = dwarf2_per_objfile->ranges_buffer + offset; | |
3348 | ||
3349 | /* For some target architectures, but not others, the | |
3350 | read_address function sign-extends the addresses it returns. | |
3351 | To recognize base address selection entries, we need a | |
3352 | mask. */ | |
3353 | unsigned int addr_size = cu->header.addr_size; | |
3354 | CORE_ADDR base_select_mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3355 | ||
3356 | /* The base address, to which the next pair is relative. Note | |
3357 | that this 'base' is a DWARF concept: most entries in a range | |
3358 | list are relative, to reduce the number of relocs against the | |
3359 | debugging information. This is separate from this function's | |
3360 | 'baseaddr' argument, which GDB uses to relocate debugging | |
3361 | information from a shared library based on the address at | |
3362 | which the library was loaded. */ | |
3363 | CORE_ADDR base = cu->header.base_address; | |
3364 | int base_known = cu->header.base_known; | |
3365 | ||
3366 | if (offset >= dwarf2_per_objfile->ranges_size) | |
3367 | { | |
3368 | complaint (&symfile_complaints, | |
3369 | _("Offset %lu out of bounds for DW_AT_ranges attribute"), | |
3370 | offset); | |
3371 | return; | |
3372 | } | |
3373 | ||
3374 | for (;;) | |
3375 | { | |
3376 | unsigned int bytes_read; | |
3377 | CORE_ADDR start, end; | |
3378 | ||
3379 | start = read_address (obfd, buffer, cu, &bytes_read); | |
3380 | buffer += bytes_read; | |
3381 | end = read_address (obfd, buffer, cu, &bytes_read); | |
3382 | buffer += bytes_read; | |
3383 | ||
3384 | /* Did we find the end of the range list? */ | |
3385 | if (start == 0 && end == 0) | |
3386 | break; | |
3387 | ||
3388 | /* Did we find a base address selection entry? */ | |
3389 | else if ((start & base_select_mask) == base_select_mask) | |
3390 | { | |
3391 | base = end; | |
3392 | base_known = 1; | |
3393 | } | |
3394 | ||
3395 | /* We found an ordinary address range. */ | |
3396 | else | |
3397 | { | |
3398 | if (!base_known) | |
3399 | { | |
3400 | complaint (&symfile_complaints, | |
3401 | _("Invalid .debug_ranges data (no base address)")); | |
3402 | return; | |
3403 | } | |
3404 | ||
3405 | record_block_range (block, | |
3406 | baseaddr + base + start, | |
3407 | baseaddr + base + end - 1); | |
3408 | } | |
3409 | } | |
3410 | } | |
3411 | } | |
3412 | ||
c906108c SS |
3413 | /* Add an aggregate field to the field list. */ |
3414 | ||
3415 | static void | |
107d2387 | 3416 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
3417 | struct dwarf2_cu *cu) |
3418 | { | |
3419 | struct objfile *objfile = cu->objfile; | |
c906108c SS |
3420 | struct nextfield *new_field; |
3421 | struct attribute *attr; | |
3422 | struct field *fp; | |
3423 | char *fieldname = ""; | |
3424 | ||
3425 | /* Allocate a new field list entry and link it in. */ | |
3426 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3427 | make_cleanup (xfree, new_field); |
c906108c SS |
3428 | memset (new_field, 0, sizeof (struct nextfield)); |
3429 | new_field->next = fip->fields; | |
3430 | fip->fields = new_field; | |
3431 | fip->nfields++; | |
3432 | ||
3433 | /* Handle accessibility and virtuality of field. | |
3434 | The default accessibility for members is public, the default | |
3435 | accessibility for inheritance is private. */ | |
3436 | if (die->tag != DW_TAG_inheritance) | |
3437 | new_field->accessibility = DW_ACCESS_public; | |
3438 | else | |
3439 | new_field->accessibility = DW_ACCESS_private; | |
3440 | new_field->virtuality = DW_VIRTUALITY_none; | |
3441 | ||
e142c38c | 3442 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3443 | if (attr) |
3444 | new_field->accessibility = DW_UNSND (attr); | |
3445 | if (new_field->accessibility != DW_ACCESS_public) | |
3446 | fip->non_public_fields = 1; | |
e142c38c | 3447 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
3448 | if (attr) |
3449 | new_field->virtuality = DW_UNSND (attr); | |
3450 | ||
3451 | fp = &new_field->field; | |
a9a9bd0f | 3452 | |
e142c38c | 3453 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 3454 | { |
a9a9bd0f DC |
3455 | /* Data member other than a C++ static data member. */ |
3456 | ||
c906108c | 3457 | /* Get type of field. */ |
e7c27a73 | 3458 | fp->type = die_type (die, cu); |
c906108c | 3459 | |
01ad7f36 DJ |
3460 | FIELD_STATIC_KIND (*fp) = 0; |
3461 | ||
c906108c | 3462 | /* Get bit size of field (zero if none). */ |
e142c38c | 3463 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
3464 | if (attr) |
3465 | { | |
3466 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
3467 | } | |
3468 | else | |
3469 | { | |
3470 | FIELD_BITSIZE (*fp) = 0; | |
3471 | } | |
3472 | ||
3473 | /* Get bit offset of field. */ | |
e142c38c | 3474 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
3475 | if (attr) |
3476 | { | |
3477 | FIELD_BITPOS (*fp) = | |
e7c27a73 | 3478 | decode_locdesc (DW_BLOCK (attr), cu) * bits_per_byte; |
c906108c SS |
3479 | } |
3480 | else | |
3481 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 3482 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
3483 | if (attr) |
3484 | { | |
3485 | if (BITS_BIG_ENDIAN) | |
3486 | { | |
3487 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
3488 | additional bit offset from the MSB of the containing |
3489 | anonymous object to the MSB of the field. We don't | |
3490 | have to do anything special since we don't need to | |
3491 | know the size of the anonymous object. */ | |
c906108c SS |
3492 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
3493 | } | |
3494 | else | |
3495 | { | |
3496 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
3497 | MSB of the anonymous object, subtract off the number of |
3498 | bits from the MSB of the field to the MSB of the | |
3499 | object, and then subtract off the number of bits of | |
3500 | the field itself. The result is the bit offset of | |
3501 | the LSB of the field. */ | |
c906108c SS |
3502 | int anonymous_size; |
3503 | int bit_offset = DW_UNSND (attr); | |
3504 | ||
e142c38c | 3505 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3506 | if (attr) |
3507 | { | |
3508 | /* The size of the anonymous object containing | |
3509 | the bit field is explicit, so use the | |
3510 | indicated size (in bytes). */ | |
3511 | anonymous_size = DW_UNSND (attr); | |
3512 | } | |
3513 | else | |
3514 | { | |
3515 | /* The size of the anonymous object containing | |
3516 | the bit field must be inferred from the type | |
3517 | attribute of the data member containing the | |
3518 | bit field. */ | |
3519 | anonymous_size = TYPE_LENGTH (fp->type); | |
3520 | } | |
3521 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
3522 | - bit_offset - FIELD_BITSIZE (*fp); | |
3523 | } | |
3524 | } | |
3525 | ||
3526 | /* Get name of field. */ | |
39cbfefa DJ |
3527 | fieldname = dwarf2_name (die, cu); |
3528 | if (fieldname == NULL) | |
3529 | fieldname = ""; | |
d8151005 DJ |
3530 | |
3531 | /* The name is already allocated along with this objfile, so we don't | |
3532 | need to duplicate it for the type. */ | |
3533 | fp->name = fieldname; | |
c906108c SS |
3534 | |
3535 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 3536 | pointer or virtual base class pointer) to private. */ |
e142c38c | 3537 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
3538 | { |
3539 | new_field->accessibility = DW_ACCESS_private; | |
3540 | fip->non_public_fields = 1; | |
3541 | } | |
3542 | } | |
a9a9bd0f | 3543 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 3544 | { |
a9a9bd0f DC |
3545 | /* C++ static member. */ |
3546 | ||
3547 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
3548 | is a declaration, but all versions of G++ as of this writing | |
3549 | (so through at least 3.2.1) incorrectly generate | |
3550 | DW_TAG_variable tags. */ | |
3551 | ||
c906108c | 3552 | char *physname; |
c906108c | 3553 | |
a9a9bd0f | 3554 | /* Get name of field. */ |
39cbfefa DJ |
3555 | fieldname = dwarf2_name (die, cu); |
3556 | if (fieldname == NULL) | |
c906108c SS |
3557 | return; |
3558 | ||
2df3850c | 3559 | /* Get physical name. */ |
e142c38c | 3560 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 3561 | |
d8151005 DJ |
3562 | /* The name is already allocated along with this objfile, so we don't |
3563 | need to duplicate it for the type. */ | |
3564 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 3565 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 3566 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
3567 | } |
3568 | else if (die->tag == DW_TAG_inheritance) | |
3569 | { | |
3570 | /* C++ base class field. */ | |
e142c38c | 3571 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 3572 | if (attr) |
e7c27a73 | 3573 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 3574 | * bits_per_byte); |
c906108c | 3575 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 3576 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 3577 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
3578 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
3579 | fip->nbaseclasses++; | |
3580 | } | |
3581 | } | |
3582 | ||
3583 | /* Create the vector of fields, and attach it to the type. */ | |
3584 | ||
3585 | static void | |
fba45db2 | 3586 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3587 | struct dwarf2_cu *cu) |
c906108c SS |
3588 | { |
3589 | int nfields = fip->nfields; | |
3590 | ||
3591 | /* Record the field count, allocate space for the array of fields, | |
3592 | and create blank accessibility bitfields if necessary. */ | |
3593 | TYPE_NFIELDS (type) = nfields; | |
3594 | TYPE_FIELDS (type) = (struct field *) | |
3595 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3596 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3597 | ||
3598 | if (fip->non_public_fields) | |
3599 | { | |
3600 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3601 | ||
3602 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3603 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3604 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3605 | ||
3606 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3607 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3608 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3609 | ||
3610 | TYPE_FIELD_IGNORE_BITS (type) = | |
3611 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3612 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3613 | } | |
3614 | ||
3615 | /* If the type has baseclasses, allocate and clear a bit vector for | |
3616 | TYPE_FIELD_VIRTUAL_BITS. */ | |
3617 | if (fip->nbaseclasses) | |
3618 | { | |
3619 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 3620 | unsigned char *pointer; |
c906108c SS |
3621 | |
3622 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
3623 | pointer = TYPE_ALLOC (type, num_bytes); |
3624 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
3625 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
3626 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
3627 | } | |
3628 | ||
3629 | /* Copy the saved-up fields into the field vector. Start from the head | |
3630 | of the list, adding to the tail of the field array, so that they end | |
3631 | up in the same order in the array in which they were added to the list. */ | |
3632 | while (nfields-- > 0) | |
3633 | { | |
3634 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
3635 | switch (fip->fields->accessibility) | |
3636 | { | |
c5aa993b JM |
3637 | case DW_ACCESS_private: |
3638 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3639 | break; | |
c906108c | 3640 | |
c5aa993b JM |
3641 | case DW_ACCESS_protected: |
3642 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3643 | break; | |
c906108c | 3644 | |
c5aa993b JM |
3645 | case DW_ACCESS_public: |
3646 | break; | |
c906108c | 3647 | |
c5aa993b JM |
3648 | default: |
3649 | /* Unknown accessibility. Complain and treat it as public. */ | |
3650 | { | |
e2e0b3e5 | 3651 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
4d3c2250 | 3652 | fip->fields->accessibility); |
c5aa993b JM |
3653 | } |
3654 | break; | |
c906108c SS |
3655 | } |
3656 | if (nfields < fip->nbaseclasses) | |
3657 | { | |
3658 | switch (fip->fields->virtuality) | |
3659 | { | |
c5aa993b JM |
3660 | case DW_VIRTUALITY_virtual: |
3661 | case DW_VIRTUALITY_pure_virtual: | |
3662 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
3663 | break; | |
c906108c SS |
3664 | } |
3665 | } | |
3666 | fip->fields = fip->fields->next; | |
3667 | } | |
3668 | } | |
3669 | ||
c906108c SS |
3670 | /* Add a member function to the proper fieldlist. */ |
3671 | ||
3672 | static void | |
107d2387 | 3673 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 3674 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 3675 | { |
e7c27a73 | 3676 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3677 | struct attribute *attr; |
3678 | struct fnfieldlist *flp; | |
3679 | int i; | |
3680 | struct fn_field *fnp; | |
3681 | char *fieldname; | |
3682 | char *physname; | |
3683 | struct nextfnfield *new_fnfield; | |
3684 | ||
2df3850c | 3685 | /* Get name of member function. */ |
39cbfefa DJ |
3686 | fieldname = dwarf2_name (die, cu); |
3687 | if (fieldname == NULL) | |
2df3850c | 3688 | return; |
c906108c | 3689 | |
2df3850c | 3690 | /* Get the mangled name. */ |
e142c38c | 3691 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
3692 | |
3693 | /* Look up member function name in fieldlist. */ | |
3694 | for (i = 0; i < fip->nfnfields; i++) | |
3695 | { | |
27bfe10e | 3696 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
3697 | break; |
3698 | } | |
3699 | ||
3700 | /* Create new list element if necessary. */ | |
3701 | if (i < fip->nfnfields) | |
3702 | flp = &fip->fnfieldlists[i]; | |
3703 | else | |
3704 | { | |
3705 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3706 | { | |
3707 | fip->fnfieldlists = (struct fnfieldlist *) | |
3708 | xrealloc (fip->fnfieldlists, | |
3709 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3710 | * sizeof (struct fnfieldlist)); |
c906108c | 3711 | if (fip->nfnfields == 0) |
c13c43fd | 3712 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
3713 | } |
3714 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
3715 | flp->name = fieldname; | |
3716 | flp->length = 0; | |
3717 | flp->head = NULL; | |
3718 | fip->nfnfields++; | |
3719 | } | |
3720 | ||
3721 | /* Create a new member function field and chain it to the field list | |
3722 | entry. */ | |
3723 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 3724 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
3725 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
3726 | new_fnfield->next = flp->head; | |
3727 | flp->head = new_fnfield; | |
3728 | flp->length++; | |
3729 | ||
3730 | /* Fill in the member function field info. */ | |
3731 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
3732 | /* The name is already allocated along with this objfile, so we don't |
3733 | need to duplicate it for the type. */ | |
3734 | fnp->physname = physname ? physname : ""; | |
c906108c SS |
3735 | fnp->type = alloc_type (objfile); |
3736 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
3737 | { | |
c906108c | 3738 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 3739 | |
e26fb1d7 DC |
3740 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
3741 | of the method itself (TYPE_CODE_METHOD). */ | |
3742 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
3743 | TYPE_TARGET_TYPE (die->type), |
3744 | TYPE_FIELDS (die->type), | |
3745 | TYPE_NFIELDS (die->type), | |
3746 | TYPE_VARARGS (die->type)); | |
c906108c SS |
3747 | |
3748 | /* Handle static member functions. | |
c5aa993b JM |
3749 | Dwarf2 has no clean way to discern C++ static and non-static |
3750 | member functions. G++ helps GDB by marking the first | |
3751 | parameter for non-static member functions (which is the | |
3752 | this pointer) as artificial. We obtain this information | |
3753 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
3754 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
3755 | fnp->voffset = VOFFSET_STATIC; | |
3756 | } | |
3757 | else | |
e2e0b3e5 | 3758 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 3759 | physname); |
c906108c SS |
3760 | |
3761 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 3762 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 3763 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
3764 | |
3765 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
3766 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
3767 | ||
3768 | /* Get accessibility. */ | |
e142c38c | 3769 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3770 | if (attr) |
3771 | { | |
3772 | switch (DW_UNSND (attr)) | |
3773 | { | |
c5aa993b JM |
3774 | case DW_ACCESS_private: |
3775 | fnp->is_private = 1; | |
3776 | break; | |
3777 | case DW_ACCESS_protected: | |
3778 | fnp->is_protected = 1; | |
3779 | break; | |
c906108c SS |
3780 | } |
3781 | } | |
3782 | ||
b02dede2 | 3783 | /* Check for artificial methods. */ |
e142c38c | 3784 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3785 | if (attr && DW_UNSND (attr) != 0) |
3786 | fnp->is_artificial = 1; | |
3787 | ||
c906108c | 3788 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3789 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3790 | if (attr) |
8e19ed76 PS |
3791 | { |
3792 | /* Support the .debug_loc offsets */ | |
3793 | if (attr_form_is_block (attr)) | |
3794 | { | |
e7c27a73 | 3795 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 PS |
3796 | } |
3797 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3798 | { | |
4d3c2250 | 3799 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3800 | } |
3801 | else | |
3802 | { | |
4d3c2250 KB |
3803 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3804 | fieldname); | |
8e19ed76 PS |
3805 | } |
3806 | } | |
c906108c SS |
3807 | } |
3808 | ||
3809 | /* Create the vector of member function fields, and attach it to the type. */ | |
3810 | ||
3811 | static void | |
fba45db2 | 3812 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3813 | struct dwarf2_cu *cu) |
c906108c SS |
3814 | { |
3815 | struct fnfieldlist *flp; | |
3816 | int total_length = 0; | |
3817 | int i; | |
3818 | ||
3819 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3820 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
3821 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
3822 | ||
3823 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
3824 | { | |
3825 | struct nextfnfield *nfp = flp->head; | |
3826 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
3827 | int k; | |
3828 | ||
3829 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
3830 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
3831 | fn_flp->fn_fields = (struct fn_field *) | |
3832 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
3833 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 3834 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
3835 | |
3836 | total_length += flp->length; | |
3837 | } | |
3838 | ||
3839 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
3840 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
3841 | } | |
3842 | ||
1168df01 JB |
3843 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
3844 | language, zero otherwise. */ | |
3845 | static int | |
3846 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
3847 | { | |
3848 | static const char vptr[] = "_vptr"; | |
987504bb | 3849 | static const char vtable[] = "vtable"; |
1168df01 | 3850 | |
987504bb JJ |
3851 | /* Look for the C++ and Java forms of the vtable. */ |
3852 | if ((cu->language == language_java | |
3853 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
3854 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
3855 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
3856 | return 1; |
3857 | ||
3858 | return 0; | |
3859 | } | |
3860 | ||
c0dd20ea DJ |
3861 | /* GCC outputs unnamed structures that are really pointers to member |
3862 | functions, with the ABI-specified layout. If DIE (from CU) describes | |
3863 | such a structure, set its type, and return nonzero. Otherwise return | |
61049d3b DJ |
3864 | zero. |
3865 | ||
3866 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
3867 | This is GCC PR debug/28767. */ | |
c0dd20ea DJ |
3868 | |
3869 | static int | |
3870 | quirk_gcc_member_function_pointer (struct die_info *die, struct dwarf2_cu *cu) | |
3871 | { | |
3872 | struct objfile *objfile = cu->objfile; | |
3873 | struct type *type; | |
3874 | struct die_info *pfn_die, *delta_die; | |
3875 | struct attribute *pfn_name, *delta_name; | |
3876 | struct type *pfn_type, *domain_type; | |
3877 | ||
3878 | /* Check for a structure with no name and two children. */ | |
3879 | if (die->tag != DW_TAG_structure_type | |
3880 | || dwarf2_attr (die, DW_AT_name, cu) != NULL | |
3881 | || die->child == NULL | |
3882 | || die->child->sibling == NULL | |
3883 | || (die->child->sibling->sibling != NULL | |
3884 | && die->child->sibling->sibling->tag != DW_TAG_padding)) | |
3885 | return 0; | |
3886 | ||
3887 | /* Check for __pfn and __delta members. */ | |
3888 | pfn_die = die->child; | |
3889 | pfn_name = dwarf2_attr (pfn_die, DW_AT_name, cu); | |
3890 | if (pfn_die->tag != DW_TAG_member | |
3891 | || pfn_name == NULL | |
3892 | || DW_STRING (pfn_name) == NULL | |
3893 | || strcmp ("__pfn", DW_STRING (pfn_name)) != 0) | |
3894 | return 0; | |
3895 | ||
3896 | delta_die = pfn_die->sibling; | |
3897 | delta_name = dwarf2_attr (delta_die, DW_AT_name, cu); | |
3898 | if (delta_die->tag != DW_TAG_member | |
3899 | || delta_name == NULL | |
3900 | || DW_STRING (delta_name) == NULL | |
3901 | || strcmp ("__delta", DW_STRING (delta_name)) != 0) | |
3902 | return 0; | |
3903 | ||
3904 | /* Find the type of the method. */ | |
3905 | pfn_type = die_type (pfn_die, cu); | |
3906 | if (pfn_type == NULL | |
3907 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
3908 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
3909 | return 0; | |
3910 | ||
3911 | /* Look for the "this" argument. */ | |
3912 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
3913 | if (TYPE_NFIELDS (pfn_type) == 0 | |
3914 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) | |
3915 | return 0; | |
3916 | ||
3917 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
3918 | type = alloc_type (objfile); | |
3919 | smash_to_method_type (type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
3920 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), | |
3921 | TYPE_VARARGS (pfn_type)); | |
0d5de010 | 3922 | type = lookup_methodptr_type (type); |
c0dd20ea DJ |
3923 | set_die_type (die, type, cu); |
3924 | ||
3925 | return 1; | |
3926 | } | |
1168df01 | 3927 | |
c906108c SS |
3928 | /* Called when we find the DIE that starts a structure or union scope |
3929 | (definition) to process all dies that define the members of the | |
3930 | structure or union. | |
3931 | ||
3932 | NOTE: we need to call struct_type regardless of whether or not the | |
3933 | DIE has an at_name attribute, since it might be an anonymous | |
3934 | structure or union. This gets the type entered into our set of | |
3935 | user defined types. | |
3936 | ||
3937 | However, if the structure is incomplete (an opaque struct/union) | |
3938 | then suppress creating a symbol table entry for it since gdb only | |
3939 | wants to find the one with the complete definition. Note that if | |
3940 | it is complete, we just call new_symbol, which does it's own | |
3941 | checking about whether the struct/union is anonymous or not (and | |
3942 | suppresses creating a symbol table entry itself). */ | |
3943 | ||
3944 | static void | |
134d01f1 | 3945 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3946 | { |
e7c27a73 | 3947 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3948 | struct type *type; |
3949 | struct attribute *attr; | |
63d06c5c DC |
3950 | const char *previous_prefix = processing_current_prefix; |
3951 | struct cleanup *back_to = NULL; | |
39cbfefa | 3952 | char *name; |
c906108c | 3953 | |
134d01f1 DJ |
3954 | if (die->type) |
3955 | return; | |
3956 | ||
c0dd20ea DJ |
3957 | if (quirk_gcc_member_function_pointer (die, cu)) |
3958 | return; | |
c906108c | 3959 | |
c0dd20ea | 3960 | type = alloc_type (objfile); |
c906108c | 3961 | INIT_CPLUS_SPECIFIC (type); |
39cbfefa DJ |
3962 | name = dwarf2_name (die, cu); |
3963 | if (name != NULL) | |
c906108c | 3964 | { |
987504bb JJ |
3965 | if (cu->language == language_cplus |
3966 | || cu->language == language_java) | |
63d06c5c | 3967 | { |
8176b9b8 DC |
3968 | char *new_prefix = determine_class_name (die, cu); |
3969 | TYPE_TAG_NAME (type) = obsavestring (new_prefix, | |
3970 | strlen (new_prefix), | |
3971 | &objfile->objfile_obstack); | |
3972 | back_to = make_cleanup (xfree, new_prefix); | |
63d06c5c DC |
3973 | processing_current_prefix = new_prefix; |
3974 | } | |
3975 | else | |
3976 | { | |
d8151005 DJ |
3977 | /* The name is already allocated along with this objfile, so |
3978 | we don't need to duplicate it for the type. */ | |
39cbfefa | 3979 | TYPE_TAG_NAME (type) = name; |
63d06c5c | 3980 | } |
c906108c SS |
3981 | } |
3982 | ||
3983 | if (die->tag == DW_TAG_structure_type) | |
3984 | { | |
3985 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
3986 | } | |
3987 | else if (die->tag == DW_TAG_union_type) | |
3988 | { | |
3989 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
3990 | } | |
3991 | else | |
3992 | { | |
3993 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 3994 | in gdbtypes.h. */ |
c906108c SS |
3995 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
3996 | } | |
3997 | ||
e142c38c | 3998 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3999 | if (attr) |
4000 | { | |
4001 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4002 | } | |
4003 | else | |
4004 | { | |
4005 | TYPE_LENGTH (type) = 0; | |
4006 | } | |
4007 | ||
d77b6808 | 4008 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB_SUPPORTED; |
dc718098 JB |
4009 | if (die_is_declaration (die, cu)) |
4010 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
4011 | ||
c906108c SS |
4012 | /* We need to add the type field to the die immediately so we don't |
4013 | infinitely recurse when dealing with pointers to the structure | |
4014 | type within the structure itself. */ | |
1c379e20 | 4015 | set_die_type (die, type, cu); |
c906108c | 4016 | |
e142c38c | 4017 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
4018 | { |
4019 | struct field_info fi; | |
4020 | struct die_info *child_die; | |
4021 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
4022 | ||
4023 | memset (&fi, 0, sizeof (struct field_info)); | |
4024 | ||
639d11d3 | 4025 | child_die = die->child; |
c906108c SS |
4026 | |
4027 | while (child_die && child_die->tag) | |
4028 | { | |
a9a9bd0f DC |
4029 | if (child_die->tag == DW_TAG_member |
4030 | || child_die->tag == DW_TAG_variable) | |
c906108c | 4031 | { |
a9a9bd0f DC |
4032 | /* NOTE: carlton/2002-11-05: A C++ static data member |
4033 | should be a DW_TAG_member that is a declaration, but | |
4034 | all versions of G++ as of this writing (so through at | |
4035 | least 3.2.1) incorrectly generate DW_TAG_variable | |
4036 | tags for them instead. */ | |
e7c27a73 | 4037 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 4038 | } |
8713b1b1 | 4039 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
4040 | { |
4041 | /* C++ member function. */ | |
134d01f1 | 4042 | read_type_die (child_die, cu); |
e7c27a73 | 4043 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
4044 | } |
4045 | else if (child_die->tag == DW_TAG_inheritance) | |
4046 | { | |
4047 | /* C++ base class field. */ | |
e7c27a73 | 4048 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 4049 | } |
c906108c SS |
4050 | child_die = sibling_die (child_die); |
4051 | } | |
4052 | ||
4053 | /* Attach fields and member functions to the type. */ | |
4054 | if (fi.nfields) | |
e7c27a73 | 4055 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
4056 | if (fi.nfnfields) |
4057 | { | |
e7c27a73 | 4058 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 4059 | |
c5aa993b | 4060 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
4061 | class itself) which contains the vtable pointer for the current |
4062 | class from the DW_AT_containing_type attribute. */ | |
4063 | ||
e142c38c | 4064 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 4065 | { |
e7c27a73 | 4066 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
4067 | |
4068 | TYPE_VPTR_BASETYPE (type) = t; | |
4069 | if (type == t) | |
4070 | { | |
c906108c SS |
4071 | int i; |
4072 | ||
4073 | /* Our own class provides vtbl ptr. */ | |
4074 | for (i = TYPE_NFIELDS (t) - 1; | |
4075 | i >= TYPE_N_BASECLASSES (t); | |
4076 | --i) | |
4077 | { | |
4078 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
4079 | ||
1168df01 | 4080 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
4081 | { |
4082 | TYPE_VPTR_FIELDNO (type) = i; | |
4083 | break; | |
4084 | } | |
4085 | } | |
4086 | ||
4087 | /* Complain if virtual function table field not found. */ | |
4088 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 4089 | complaint (&symfile_complaints, |
e2e0b3e5 | 4090 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
4091 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
4092 | ""); | |
c906108c SS |
4093 | } |
4094 | else | |
4095 | { | |
4096 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
4097 | } | |
4098 | } | |
f6235d4c EZ |
4099 | else if (cu->producer |
4100 | && strncmp (cu->producer, | |
4101 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
4102 | { | |
4103 | /* The IBM XLC compiler does not provide direct indication | |
4104 | of the containing type, but the vtable pointer is | |
4105 | always named __vfp. */ | |
4106 | ||
4107 | int i; | |
4108 | ||
4109 | for (i = TYPE_NFIELDS (type) - 1; | |
4110 | i >= TYPE_N_BASECLASSES (type); | |
4111 | --i) | |
4112 | { | |
4113 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
4114 | { | |
4115 | TYPE_VPTR_FIELDNO (type) = i; | |
4116 | TYPE_VPTR_BASETYPE (type) = type; | |
4117 | break; | |
4118 | } | |
4119 | } | |
4120 | } | |
c906108c SS |
4121 | } |
4122 | ||
c906108c SS |
4123 | do_cleanups (back_to); |
4124 | } | |
63d06c5c DC |
4125 | |
4126 | processing_current_prefix = previous_prefix; | |
4127 | if (back_to != NULL) | |
4128 | do_cleanups (back_to); | |
c906108c SS |
4129 | } |
4130 | ||
134d01f1 DJ |
4131 | static void |
4132 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4133 | { | |
4134 | struct objfile *objfile = cu->objfile; | |
4135 | const char *previous_prefix = processing_current_prefix; | |
90aeadfc | 4136 | struct die_info *child_die = die->child; |
c906108c | 4137 | |
134d01f1 DJ |
4138 | if (TYPE_TAG_NAME (die->type) != NULL) |
4139 | processing_current_prefix = TYPE_TAG_NAME (die->type); | |
c906108c | 4140 | |
90aeadfc DC |
4141 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
4142 | snapshots) has been known to create a die giving a declaration | |
4143 | for a class that has, as a child, a die giving a definition for a | |
4144 | nested class. So we have to process our children even if the | |
4145 | current die is a declaration. Normally, of course, a declaration | |
4146 | won't have any children at all. */ | |
134d01f1 | 4147 | |
90aeadfc DC |
4148 | while (child_die != NULL && child_die->tag) |
4149 | { | |
4150 | if (child_die->tag == DW_TAG_member | |
4151 | || child_die->tag == DW_TAG_variable | |
4152 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 4153 | { |
90aeadfc | 4154 | /* Do nothing. */ |
134d01f1 | 4155 | } |
90aeadfc DC |
4156 | else |
4157 | process_die (child_die, cu); | |
134d01f1 | 4158 | |
90aeadfc | 4159 | child_die = sibling_die (child_die); |
134d01f1 DJ |
4160 | } |
4161 | ||
fa4028e9 JB |
4162 | /* Do not consider external references. According to the DWARF standard, |
4163 | these DIEs are identified by the fact that they have no byte_size | |
4164 | attribute, and a declaration attribute. */ | |
4165 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
4166 | || !die_is_declaration (die, cu)) | |
90aeadfc DC |
4167 | new_symbol (die, die->type, cu); |
4168 | ||
134d01f1 DJ |
4169 | processing_current_prefix = previous_prefix; |
4170 | } | |
4171 | ||
4172 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
4173 | complete the type's fields yet, or create any symbols. */ | |
c906108c SS |
4174 | |
4175 | static void | |
134d01f1 | 4176 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4177 | { |
e7c27a73 | 4178 | struct objfile *objfile = cu->objfile; |
c906108c | 4179 | struct type *type; |
c906108c | 4180 | struct attribute *attr; |
39cbfefa | 4181 | char *name; |
134d01f1 DJ |
4182 | |
4183 | if (die->type) | |
4184 | return; | |
c906108c SS |
4185 | |
4186 | type = alloc_type (objfile); | |
4187 | ||
4188 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
39cbfefa DJ |
4189 | name = dwarf2_name (die, cu); |
4190 | if (name != NULL) | |
c906108c | 4191 | { |
63d06c5c DC |
4192 | if (processing_has_namespace_info) |
4193 | { | |
987504bb JJ |
4194 | TYPE_TAG_NAME (type) = typename_concat (&objfile->objfile_obstack, |
4195 | processing_current_prefix, | |
4196 | name, cu); | |
63d06c5c DC |
4197 | } |
4198 | else | |
4199 | { | |
d8151005 DJ |
4200 | /* The name is already allocated along with this objfile, so |
4201 | we don't need to duplicate it for the type. */ | |
4202 | TYPE_TAG_NAME (type) = name; | |
63d06c5c | 4203 | } |
c906108c SS |
4204 | } |
4205 | ||
e142c38c | 4206 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4207 | if (attr) |
4208 | { | |
4209 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4210 | } | |
4211 | else | |
4212 | { | |
4213 | TYPE_LENGTH (type) = 0; | |
4214 | } | |
4215 | ||
1c379e20 | 4216 | set_die_type (die, type, cu); |
134d01f1 DJ |
4217 | } |
4218 | ||
8176b9b8 | 4219 | /* Determine the name of the type represented by DIE, which should be |
987504bb | 4220 | a named C++ or Java compound type. Return the name in question; the caller |
8176b9b8 DC |
4221 | is responsible for xfree()'ing it. */ |
4222 | ||
4223 | static char * | |
4224 | determine_class_name (struct die_info *die, struct dwarf2_cu *cu) | |
4225 | { | |
4226 | struct cleanup *back_to = NULL; | |
4227 | struct die_info *spec_die = die_specification (die, cu); | |
4228 | char *new_prefix = NULL; | |
4229 | ||
4230 | /* If this is the definition of a class that is declared by another | |
4231 | die, then processing_current_prefix may not be accurate; see | |
4232 | read_func_scope for a similar example. */ | |
4233 | if (spec_die != NULL) | |
4234 | { | |
4235 | char *specification_prefix = determine_prefix (spec_die, cu); | |
4236 | processing_current_prefix = specification_prefix; | |
4237 | back_to = make_cleanup (xfree, specification_prefix); | |
4238 | } | |
4239 | ||
4240 | /* If we don't have namespace debug info, guess the name by trying | |
4241 | to demangle the names of members, just like we did in | |
72bf9492 | 4242 | guess_structure_name. */ |
8176b9b8 DC |
4243 | if (!processing_has_namespace_info) |
4244 | { | |
4245 | struct die_info *child; | |
4246 | ||
4247 | for (child = die->child; | |
4248 | child != NULL && child->tag != 0; | |
4249 | child = sibling_die (child)) | |
4250 | { | |
4251 | if (child->tag == DW_TAG_subprogram) | |
4252 | { | |
31c27f77 JJ |
4253 | new_prefix |
4254 | = language_class_name_from_physname (cu->language_defn, | |
4255 | dwarf2_linkage_name | |
8176b9b8 DC |
4256 | (child, cu)); |
4257 | ||
4258 | if (new_prefix != NULL) | |
4259 | break; | |
4260 | } | |
4261 | } | |
4262 | } | |
4263 | ||
4264 | if (new_prefix == NULL) | |
4265 | { | |
4266 | const char *name = dwarf2_name (die, cu); | |
987504bb JJ |
4267 | new_prefix = typename_concat (NULL, processing_current_prefix, |
4268 | name ? name : "<<anonymous>>", | |
4269 | cu); | |
8176b9b8 DC |
4270 | } |
4271 | ||
4272 | if (back_to != NULL) | |
4273 | do_cleanups (back_to); | |
4274 | ||
4275 | return new_prefix; | |
4276 | } | |
4277 | ||
134d01f1 DJ |
4278 | /* Given a pointer to a die which begins an enumeration, process all |
4279 | the dies that define the members of the enumeration, and create the | |
4280 | symbol for the enumeration type. | |
4281 | ||
4282 | NOTE: We reverse the order of the element list. */ | |
4283 | ||
4284 | static void | |
4285 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4286 | { | |
4287 | struct objfile *objfile = cu->objfile; | |
4288 | struct die_info *child_die; | |
4289 | struct field *fields; | |
134d01f1 DJ |
4290 | struct symbol *sym; |
4291 | int num_fields; | |
4292 | int unsigned_enum = 1; | |
39cbfefa | 4293 | char *name; |
134d01f1 | 4294 | |
c906108c SS |
4295 | num_fields = 0; |
4296 | fields = NULL; | |
639d11d3 | 4297 | if (die->child != NULL) |
c906108c | 4298 | { |
639d11d3 | 4299 | child_die = die->child; |
c906108c SS |
4300 | while (child_die && child_die->tag) |
4301 | { | |
4302 | if (child_die->tag != DW_TAG_enumerator) | |
4303 | { | |
e7c27a73 | 4304 | process_die (child_die, cu); |
c906108c SS |
4305 | } |
4306 | else | |
4307 | { | |
39cbfefa DJ |
4308 | name = dwarf2_name (child_die, cu); |
4309 | if (name) | |
c906108c | 4310 | { |
134d01f1 | 4311 | sym = new_symbol (child_die, die->type, cu); |
c906108c SS |
4312 | if (SYMBOL_VALUE (sym) < 0) |
4313 | unsigned_enum = 0; | |
4314 | ||
4315 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4316 | { | |
4317 | fields = (struct field *) | |
4318 | xrealloc (fields, | |
4319 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4320 | * sizeof (struct field)); |
c906108c SS |
4321 | } |
4322 | ||
22abf04a | 4323 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
4324 | FIELD_TYPE (fields[num_fields]) = NULL; |
4325 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
4326 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 4327 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
4328 | |
4329 | num_fields++; | |
4330 | } | |
4331 | } | |
4332 | ||
4333 | child_die = sibling_die (child_die); | |
4334 | } | |
4335 | ||
4336 | if (num_fields) | |
4337 | { | |
134d01f1 DJ |
4338 | TYPE_NFIELDS (die->type) = num_fields; |
4339 | TYPE_FIELDS (die->type) = (struct field *) | |
4340 | TYPE_ALLOC (die->type, sizeof (struct field) * num_fields); | |
4341 | memcpy (TYPE_FIELDS (die->type), fields, | |
c906108c | 4342 | sizeof (struct field) * num_fields); |
b8c9b27d | 4343 | xfree (fields); |
c906108c SS |
4344 | } |
4345 | if (unsigned_enum) | |
134d01f1 | 4346 | TYPE_FLAGS (die->type) |= TYPE_FLAG_UNSIGNED; |
c906108c | 4347 | } |
134d01f1 DJ |
4348 | |
4349 | new_symbol (die, die->type, cu); | |
c906108c SS |
4350 | } |
4351 | ||
4352 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
4353 | the DIE's type field. For now, this only handles one dimensional | |
4354 | arrays. */ | |
4355 | ||
4356 | static void | |
e7c27a73 | 4357 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4358 | { |
e7c27a73 | 4359 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4360 | struct die_info *child_die; |
4361 | struct type *type = NULL; | |
4362 | struct type *element_type, *range_type, *index_type; | |
4363 | struct type **range_types = NULL; | |
4364 | struct attribute *attr; | |
4365 | int ndim = 0; | |
4366 | struct cleanup *back_to; | |
39cbfefa | 4367 | char *name; |
c906108c SS |
4368 | |
4369 | /* Return if we've already decoded this type. */ | |
4370 | if (die->type) | |
4371 | { | |
4372 | return; | |
4373 | } | |
4374 | ||
e7c27a73 | 4375 | element_type = die_type (die, cu); |
c906108c SS |
4376 | |
4377 | /* Irix 6.2 native cc creates array types without children for | |
4378 | arrays with unspecified length. */ | |
639d11d3 | 4379 | if (die->child == NULL) |
c906108c | 4380 | { |
6ccb9162 | 4381 | index_type = builtin_type_int32; |
c906108c | 4382 | range_type = create_range_type (NULL, index_type, 0, -1); |
1c379e20 DJ |
4383 | set_die_type (die, create_array_type (NULL, element_type, range_type), |
4384 | cu); | |
c906108c SS |
4385 | return; |
4386 | } | |
4387 | ||
4388 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 4389 | child_die = die->child; |
c906108c SS |
4390 | while (child_die && child_die->tag) |
4391 | { | |
4392 | if (child_die->tag == DW_TAG_subrange_type) | |
4393 | { | |
a02abb62 | 4394 | read_subrange_type (child_die, cu); |
c906108c | 4395 | |
a02abb62 JB |
4396 | if (child_die->type != NULL) |
4397 | { | |
4398 | /* The range type was succesfully read. Save it for | |
4399 | the array type creation. */ | |
4400 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
4401 | { | |
4402 | range_types = (struct type **) | |
4403 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
4404 | * sizeof (struct type *)); | |
4405 | if (ndim == 0) | |
4406 | make_cleanup (free_current_contents, &range_types); | |
4407 | } | |
4408 | range_types[ndim++] = child_die->type; | |
4409 | } | |
c906108c SS |
4410 | } |
4411 | child_die = sibling_die (child_die); | |
4412 | } | |
4413 | ||
4414 | /* Dwarf2 dimensions are output from left to right, create the | |
4415 | necessary array types in backwards order. */ | |
7ca2d3a3 | 4416 | |
c906108c | 4417 | type = element_type; |
7ca2d3a3 DL |
4418 | |
4419 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
4420 | { | |
4421 | int i = 0; | |
4422 | while (i < ndim) | |
4423 | type = create_array_type (NULL, type, range_types[i++]); | |
4424 | } | |
4425 | else | |
4426 | { | |
4427 | while (ndim-- > 0) | |
4428 | type = create_array_type (NULL, type, range_types[ndim]); | |
4429 | } | |
c906108c | 4430 | |
f5f8a009 EZ |
4431 | /* Understand Dwarf2 support for vector types (like they occur on |
4432 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
4433 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
4434 | custom vendor extension. The main difference between a regular | |
4435 | array and the vector variant is that vectors are passed by value | |
4436 | to functions. */ | |
e142c38c | 4437 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 4438 | if (attr) |
ea37ba09 | 4439 | make_vector_type (type); |
f5f8a009 | 4440 | |
39cbfefa DJ |
4441 | name = dwarf2_name (die, cu); |
4442 | if (name) | |
4443 | TYPE_NAME (type) = name; | |
714e295e | 4444 | |
c906108c SS |
4445 | do_cleanups (back_to); |
4446 | ||
4447 | /* Install the type in the die. */ | |
1c379e20 | 4448 | set_die_type (die, type, cu); |
c906108c SS |
4449 | } |
4450 | ||
7ca2d3a3 DL |
4451 | static enum dwarf_array_dim_ordering |
4452 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
4453 | { | |
4454 | struct attribute *attr; | |
4455 | ||
4456 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
4457 | ||
4458 | if (attr) return DW_SND (attr); | |
4459 | ||
4460 | /* | |
4461 | GNU F77 is a special case, as at 08/2004 array type info is the | |
4462 | opposite order to the dwarf2 specification, but data is still | |
4463 | laid out as per normal fortran. | |
4464 | ||
4465 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
4466 | version checking. | |
4467 | */ | |
4468 | ||
4469 | if (cu->language == language_fortran && | |
4470 | cu->producer && strstr (cu->producer, "GNU F77")) | |
4471 | { | |
4472 | return DW_ORD_row_major; | |
4473 | } | |
4474 | ||
4475 | switch (cu->language_defn->la_array_ordering) | |
4476 | { | |
4477 | case array_column_major: | |
4478 | return DW_ORD_col_major; | |
4479 | case array_row_major: | |
4480 | default: | |
4481 | return DW_ORD_row_major; | |
4482 | }; | |
4483 | } | |
4484 | ||
72019c9c GM |
4485 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
4486 | the DIE's type field. */ | |
4487 | ||
4488 | static void | |
4489 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) | |
4490 | { | |
4491 | if (die->type == NULL) | |
4492 | die->type = create_set_type ((struct type *) NULL, die_type (die, cu)); | |
4493 | } | |
7ca2d3a3 | 4494 | |
c906108c SS |
4495 | /* First cut: install each common block member as a global variable. */ |
4496 | ||
4497 | static void | |
e7c27a73 | 4498 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4499 | { |
4500 | struct die_info *child_die; | |
4501 | struct attribute *attr; | |
4502 | struct symbol *sym; | |
4503 | CORE_ADDR base = (CORE_ADDR) 0; | |
4504 | ||
e142c38c | 4505 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
4506 | if (attr) |
4507 | { | |
8e19ed76 PS |
4508 | /* Support the .debug_loc offsets */ |
4509 | if (attr_form_is_block (attr)) | |
4510 | { | |
e7c27a73 | 4511 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 PS |
4512 | } |
4513 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
4514 | { | |
4d3c2250 | 4515 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4516 | } |
4517 | else | |
4518 | { | |
4d3c2250 KB |
4519 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4520 | "common block member"); | |
8e19ed76 | 4521 | } |
c906108c | 4522 | } |
639d11d3 | 4523 | if (die->child != NULL) |
c906108c | 4524 | { |
639d11d3 | 4525 | child_die = die->child; |
c906108c SS |
4526 | while (child_die && child_die->tag) |
4527 | { | |
e7c27a73 | 4528 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 4529 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
4530 | if (attr) |
4531 | { | |
4532 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 4533 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
4534 | add_symbol_to_list (sym, &global_symbols); |
4535 | } | |
4536 | child_die = sibling_die (child_die); | |
4537 | } | |
4538 | } | |
4539 | } | |
4540 | ||
d9fa45fe DC |
4541 | /* Read a C++ namespace. */ |
4542 | ||
d9fa45fe | 4543 | static void |
e7c27a73 | 4544 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 4545 | { |
e7c27a73 | 4546 | struct objfile *objfile = cu->objfile; |
38d518c9 | 4547 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 4548 | const char *name; |
9219021c DC |
4549 | int is_anonymous; |
4550 | struct die_info *current_die; | |
987504bb | 4551 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
9219021c | 4552 | |
e142c38c | 4553 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
4554 | |
4555 | /* Now build the name of the current namespace. */ | |
4556 | ||
38d518c9 | 4557 | if (previous_prefix[0] == '\0') |
9219021c | 4558 | { |
38d518c9 | 4559 | processing_current_prefix = name; |
9219021c DC |
4560 | } |
4561 | else | |
4562 | { | |
987504bb JJ |
4563 | char *temp_name = typename_concat (NULL, previous_prefix, name, cu); |
4564 | make_cleanup (xfree, temp_name); | |
38d518c9 | 4565 | processing_current_prefix = temp_name; |
9219021c DC |
4566 | } |
4567 | ||
5c4e30ca DC |
4568 | /* Add a symbol associated to this if we haven't seen the namespace |
4569 | before. Also, add a using directive if it's an anonymous | |
4570 | namespace. */ | |
9219021c | 4571 | |
e142c38c | 4572 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
4573 | { |
4574 | struct type *type; | |
4575 | ||
4576 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
4577 | this cast will hopefully become unnecessary. */ | |
4578 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 4579 | (char *) processing_current_prefix, |
5c4e30ca DC |
4580 | objfile); |
4581 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
4582 | ||
e7c27a73 | 4583 | new_symbol (die, type, cu); |
1c379e20 | 4584 | set_die_type (die, type, cu); |
5c4e30ca DC |
4585 | |
4586 | if (is_anonymous) | |
38d518c9 EZ |
4587 | cp_add_using_directive (processing_current_prefix, |
4588 | strlen (previous_prefix), | |
4589 | strlen (processing_current_prefix)); | |
5c4e30ca | 4590 | } |
9219021c | 4591 | |
639d11d3 | 4592 | if (die->child != NULL) |
d9fa45fe | 4593 | { |
639d11d3 | 4594 | struct die_info *child_die = die->child; |
d9fa45fe DC |
4595 | |
4596 | while (child_die && child_die->tag) | |
4597 | { | |
e7c27a73 | 4598 | process_die (child_die, cu); |
d9fa45fe DC |
4599 | child_die = sibling_die (child_die); |
4600 | } | |
4601 | } | |
9219021c | 4602 | |
38d518c9 | 4603 | processing_current_prefix = previous_prefix; |
987504bb | 4604 | do_cleanups (back_to); |
38d518c9 EZ |
4605 | } |
4606 | ||
4607 | /* Return the name of the namespace represented by DIE. Set | |
4608 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
4609 | namespace. */ | |
4610 | ||
4611 | static const char * | |
e142c38c | 4612 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
4613 | { |
4614 | struct die_info *current_die; | |
4615 | const char *name = NULL; | |
4616 | ||
4617 | /* Loop through the extensions until we find a name. */ | |
4618 | ||
4619 | for (current_die = die; | |
4620 | current_die != NULL; | |
e142c38c | 4621 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 4622 | { |
e142c38c | 4623 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
4624 | if (name != NULL) |
4625 | break; | |
4626 | } | |
4627 | ||
4628 | /* Is it an anonymous namespace? */ | |
4629 | ||
4630 | *is_anonymous = (name == NULL); | |
4631 | if (*is_anonymous) | |
4632 | name = "(anonymous namespace)"; | |
4633 | ||
4634 | return name; | |
d9fa45fe DC |
4635 | } |
4636 | ||
c906108c SS |
4637 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
4638 | the user defined type vector. */ | |
4639 | ||
4640 | static void | |
e7c27a73 | 4641 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4642 | { |
e7c27a73 | 4643 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 4644 | struct type *type; |
8b2dbe47 KB |
4645 | struct attribute *attr_byte_size; |
4646 | struct attribute *attr_address_class; | |
4647 | int byte_size, addr_class; | |
c906108c SS |
4648 | |
4649 | if (die->type) | |
4650 | { | |
4651 | return; | |
4652 | } | |
4653 | ||
e7c27a73 | 4654 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 4655 | |
e142c38c | 4656 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
4657 | if (attr_byte_size) |
4658 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 4659 | else |
8b2dbe47 KB |
4660 | byte_size = cu_header->addr_size; |
4661 | ||
e142c38c | 4662 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
4663 | if (attr_address_class) |
4664 | addr_class = DW_UNSND (attr_address_class); | |
4665 | else | |
4666 | addr_class = DW_ADDR_none; | |
4667 | ||
4668 | /* If the pointer size or address class is different than the | |
4669 | default, create a type variant marked as such and set the | |
4670 | length accordingly. */ | |
4671 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 4672 | { |
849957d9 | 4673 | if (gdbarch_address_class_type_flags_p (current_gdbarch)) |
8b2dbe47 KB |
4674 | { |
4675 | int type_flags; | |
4676 | ||
849957d9 UW |
4677 | type_flags = gdbarch_address_class_type_flags |
4678 | (current_gdbarch, byte_size, addr_class); | |
8b2dbe47 KB |
4679 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); |
4680 | type = make_type_with_address_space (type, type_flags); | |
4681 | } | |
4682 | else if (TYPE_LENGTH (type) != byte_size) | |
4683 | { | |
e2e0b3e5 | 4684 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 KB |
4685 | } |
4686 | else { | |
4687 | /* Should we also complain about unhandled address classes? */ | |
4688 | } | |
c906108c | 4689 | } |
8b2dbe47 KB |
4690 | |
4691 | TYPE_LENGTH (type) = byte_size; | |
1c379e20 | 4692 | set_die_type (die, type, cu); |
c906108c SS |
4693 | } |
4694 | ||
4695 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
4696 | the user defined type vector. */ | |
4697 | ||
4698 | static void | |
e7c27a73 | 4699 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4700 | { |
e7c27a73 | 4701 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4702 | struct type *type; |
4703 | struct type *to_type; | |
4704 | struct type *domain; | |
4705 | ||
4706 | if (die->type) | |
4707 | { | |
4708 | return; | |
4709 | } | |
4710 | ||
e7c27a73 DJ |
4711 | to_type = die_type (die, cu); |
4712 | domain = die_containing_type (die, cu); | |
0d5de010 DJ |
4713 | |
4714 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) | |
4715 | type = lookup_methodptr_type (to_type); | |
4716 | else | |
4717 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 4718 | |
1c379e20 | 4719 | set_die_type (die, type, cu); |
c906108c SS |
4720 | } |
4721 | ||
4722 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
4723 | the user defined type vector. */ | |
4724 | ||
4725 | static void | |
e7c27a73 | 4726 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4727 | { |
e7c27a73 | 4728 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4729 | struct type *type; |
4730 | struct attribute *attr; | |
4731 | ||
4732 | if (die->type) | |
4733 | { | |
4734 | return; | |
4735 | } | |
4736 | ||
e7c27a73 | 4737 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 4738 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4739 | if (attr) |
4740 | { | |
4741 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4742 | } | |
4743 | else | |
4744 | { | |
107d2387 | 4745 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 4746 | } |
1c379e20 | 4747 | set_die_type (die, type, cu); |
c906108c SS |
4748 | } |
4749 | ||
4750 | static void | |
e7c27a73 | 4751 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4752 | { |
090c42a4 JB |
4753 | struct type *base_type; |
4754 | ||
c906108c SS |
4755 | if (die->type) |
4756 | { | |
4757 | return; | |
4758 | } | |
4759 | ||
e7c27a73 | 4760 | base_type = die_type (die, cu); |
1c379e20 DJ |
4761 | set_die_type (die, make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0), |
4762 | cu); | |
c906108c SS |
4763 | } |
4764 | ||
4765 | static void | |
e7c27a73 | 4766 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4767 | { |
090c42a4 JB |
4768 | struct type *base_type; |
4769 | ||
c906108c SS |
4770 | if (die->type) |
4771 | { | |
4772 | return; | |
4773 | } | |
4774 | ||
e7c27a73 | 4775 | base_type = die_type (die, cu); |
1c379e20 DJ |
4776 | set_die_type (die, make_cv_type (TYPE_CONST (base_type), 1, base_type, 0), |
4777 | cu); | |
c906108c SS |
4778 | } |
4779 | ||
4780 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
4781 | the user defined type vector. It isn't really a user defined type, | |
4782 | but it behaves like one, with other DIE's using an AT_user_def_type | |
4783 | attribute to reference it. */ | |
4784 | ||
4785 | static void | |
e7c27a73 | 4786 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4787 | { |
e7c27a73 | 4788 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4789 | struct type *type, *range_type, *index_type, *char_type; |
4790 | struct attribute *attr; | |
4791 | unsigned int length; | |
4792 | ||
4793 | if (die->type) | |
4794 | { | |
4795 | return; | |
4796 | } | |
4797 | ||
e142c38c | 4798 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
4799 | if (attr) |
4800 | { | |
4801 | length = DW_UNSND (attr); | |
4802 | } | |
4803 | else | |
4804 | { | |
b21b22e0 | 4805 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 4806 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
4807 | if (attr) |
4808 | { | |
4809 | length = DW_UNSND (attr); | |
4810 | } | |
4811 | else | |
4812 | { | |
4813 | length = 1; | |
4814 | } | |
c906108c | 4815 | } |
6ccb9162 UW |
4816 | |
4817 | index_type = builtin_type_int32; | |
c906108c | 4818 | range_type = create_range_type (NULL, index_type, 1, length); |
6ccb9162 UW |
4819 | type = create_string_type (NULL, range_type); |
4820 | ||
1c379e20 | 4821 | set_die_type (die, type, cu); |
c906108c SS |
4822 | } |
4823 | ||
4824 | /* Handle DIES due to C code like: | |
4825 | ||
4826 | struct foo | |
c5aa993b JM |
4827 | { |
4828 | int (*funcp)(int a, long l); | |
4829 | int b; | |
4830 | }; | |
c906108c SS |
4831 | |
4832 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 4833 | */ |
c906108c SS |
4834 | |
4835 | static void | |
e7c27a73 | 4836 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4837 | { |
4838 | struct type *type; /* Type that this function returns */ | |
4839 | struct type *ftype; /* Function that returns above type */ | |
4840 | struct attribute *attr; | |
4841 | ||
4842 | /* Decode the type that this subroutine returns */ | |
4843 | if (die->type) | |
4844 | { | |
4845 | return; | |
4846 | } | |
e7c27a73 | 4847 | type = die_type (die, cu); |
1326e61b | 4848 | ftype = make_function_type (type, (struct type **) 0); |
c906108c | 4849 | |
5b8101ae | 4850 | /* All functions in C++, Pascal and Java have prototypes. */ |
e142c38c | 4851 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 4852 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb | 4853 | || cu->language == language_cplus |
5b8101ae PM |
4854 | || cu->language == language_java |
4855 | || cu->language == language_pascal) | |
c906108c SS |
4856 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
4857 | ||
639d11d3 | 4858 | if (die->child != NULL) |
c906108c SS |
4859 | { |
4860 | struct die_info *child_die; | |
4861 | int nparams = 0; | |
4862 | int iparams = 0; | |
4863 | ||
4864 | /* Count the number of parameters. | |
4865 | FIXME: GDB currently ignores vararg functions, but knows about | |
4866 | vararg member functions. */ | |
639d11d3 | 4867 | child_die = die->child; |
c906108c SS |
4868 | while (child_die && child_die->tag) |
4869 | { | |
4870 | if (child_die->tag == DW_TAG_formal_parameter) | |
4871 | nparams++; | |
4872 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
4873 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
4874 | child_die = sibling_die (child_die); | |
4875 | } | |
4876 | ||
4877 | /* Allocate storage for parameters and fill them in. */ | |
4878 | TYPE_NFIELDS (ftype) = nparams; | |
4879 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 4880 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 4881 | |
639d11d3 | 4882 | child_die = die->child; |
c906108c SS |
4883 | while (child_die && child_die->tag) |
4884 | { | |
4885 | if (child_die->tag == DW_TAG_formal_parameter) | |
4886 | { | |
4887 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
4888 | member functions. G++ helps GDB by marking the first |
4889 | parameter for non-static member functions (which is the | |
4890 | this pointer) as artificial. We pass this information | |
4891 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 4892 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
4893 | if (attr) |
4894 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
4895 | else | |
4896 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 4897 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
4898 | iparams++; |
4899 | } | |
4900 | child_die = sibling_die (child_die); | |
4901 | } | |
4902 | } | |
4903 | ||
1c379e20 | 4904 | set_die_type (die, ftype, cu); |
c906108c SS |
4905 | } |
4906 | ||
4907 | static void | |
e7c27a73 | 4908 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4909 | { |
e7c27a73 | 4910 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
4911 | struct attribute *attr; |
4912 | char *name = NULL; | |
c906108c SS |
4913 | |
4914 | if (!die->type) | |
4915 | { | |
39cbfefa | 4916 | name = dwarf2_name (die, cu); |
1c379e20 DJ |
4917 | set_die_type (die, init_type (TYPE_CODE_TYPEDEF, 0, |
4918 | TYPE_FLAG_TARGET_STUB, name, objfile), | |
4919 | cu); | |
e7c27a73 | 4920 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
4921 | } |
4922 | } | |
4923 | ||
4924 | /* Find a representation of a given base type and install | |
4925 | it in the TYPE field of the die. */ | |
4926 | ||
4927 | static void | |
e7c27a73 | 4928 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4929 | { |
e7c27a73 | 4930 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4931 | struct type *type; |
4932 | struct attribute *attr; | |
4933 | int encoding = 0, size = 0; | |
39cbfefa | 4934 | char *name; |
6ccb9162 UW |
4935 | enum type_code code = TYPE_CODE_INT; |
4936 | int type_flags = 0; | |
4937 | struct type *target_type = NULL; | |
c906108c SS |
4938 | |
4939 | /* If we've already decoded this die, this is a no-op. */ | |
4940 | if (die->type) | |
4941 | { | |
4942 | return; | |
4943 | } | |
4944 | ||
e142c38c | 4945 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
4946 | if (attr) |
4947 | { | |
4948 | encoding = DW_UNSND (attr); | |
4949 | } | |
e142c38c | 4950 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4951 | if (attr) |
4952 | { | |
4953 | size = DW_UNSND (attr); | |
4954 | } | |
39cbfefa | 4955 | name = dwarf2_name (die, cu); |
6ccb9162 | 4956 | if (!name) |
c906108c | 4957 | { |
6ccb9162 UW |
4958 | complaint (&symfile_complaints, |
4959 | _("DW_AT_name missing from DW_TAG_base_type")); | |
c906108c | 4960 | } |
6ccb9162 UW |
4961 | |
4962 | switch (encoding) | |
c906108c | 4963 | { |
6ccb9162 UW |
4964 | case DW_ATE_address: |
4965 | /* Turn DW_ATE_address into a void * pointer. */ | |
4966 | code = TYPE_CODE_PTR; | |
4967 | type_flags |= TYPE_FLAG_UNSIGNED; | |
4968 | target_type = init_type (TYPE_CODE_VOID, 1, 0, NULL, objfile); | |
4969 | break; | |
4970 | case DW_ATE_boolean: | |
4971 | code = TYPE_CODE_BOOL; | |
4972 | type_flags |= TYPE_FLAG_UNSIGNED; | |
4973 | break; | |
4974 | case DW_ATE_complex_float: | |
4975 | code = TYPE_CODE_COMPLEX; | |
4976 | target_type = init_type (TYPE_CODE_FLT, size / 2, 0, NULL, objfile); | |
4977 | break; | |
4978 | case DW_ATE_decimal_float: | |
4979 | code = TYPE_CODE_DECFLOAT; | |
4980 | break; | |
4981 | case DW_ATE_float: | |
4982 | code = TYPE_CODE_FLT; | |
4983 | break; | |
4984 | case DW_ATE_signed: | |
4985 | break; | |
4986 | case DW_ATE_unsigned: | |
4987 | type_flags |= TYPE_FLAG_UNSIGNED; | |
4988 | break; | |
4989 | case DW_ATE_signed_char: | |
4990 | if (cu->language == language_m2) | |
4991 | code = TYPE_CODE_CHAR; | |
4992 | break; | |
4993 | case DW_ATE_unsigned_char: | |
4994 | if (cu->language == language_m2) | |
4995 | code = TYPE_CODE_CHAR; | |
4996 | type_flags |= TYPE_FLAG_UNSIGNED; | |
4997 | break; | |
4998 | default: | |
4999 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), | |
5000 | dwarf_type_encoding_name (encoding)); | |
5001 | break; | |
c906108c | 5002 | } |
6ccb9162 UW |
5003 | |
5004 | type = init_type (code, size, type_flags, name, objfile); | |
5005 | TYPE_TARGET_TYPE (type) = target_type; | |
5006 | ||
1c379e20 | 5007 | set_die_type (die, type, cu); |
c906108c SS |
5008 | } |
5009 | ||
a02abb62 JB |
5010 | /* Read the given DW_AT_subrange DIE. */ |
5011 | ||
5012 | static void | |
5013 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
5014 | { | |
5015 | struct type *base_type; | |
5016 | struct type *range_type; | |
5017 | struct attribute *attr; | |
5018 | int low = 0; | |
5019 | int high = -1; | |
39cbfefa | 5020 | char *name; |
a02abb62 JB |
5021 | |
5022 | /* If we have already decoded this die, then nothing more to do. */ | |
5023 | if (die->type) | |
5024 | return; | |
5025 | ||
5026 | base_type = die_type (die, cu); | |
3d1f72c2 | 5027 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
a02abb62 JB |
5028 | { |
5029 | complaint (&symfile_complaints, | |
e2e0b3e5 | 5030 | _("DW_AT_type missing from DW_TAG_subrange_type")); |
17a912b6 | 5031 | base_type |
6ccb9162 UW |
5032 | = init_type (TYPE_CODE_INT, gdbarch_addr_bit (current_gdbarch) / 8, |
5033 | 0, NULL, cu->objfile); | |
a02abb62 JB |
5034 | } |
5035 | ||
e142c38c | 5036 | if (cu->language == language_fortran) |
a02abb62 JB |
5037 | { |
5038 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
5039 | low = 1; | |
5040 | } | |
5041 | ||
dd5e6932 DJ |
5042 | /* FIXME: For variable sized arrays either of these could be |
5043 | a variable rather than a constant value. We'll allow it, | |
5044 | but we don't know how to handle it. */ | |
e142c38c | 5045 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
5046 | if (attr) |
5047 | low = dwarf2_get_attr_constant_value (attr, 0); | |
5048 | ||
e142c38c | 5049 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
5050 | if (attr) |
5051 | { | |
5052 | if (attr->form == DW_FORM_block1) | |
5053 | { | |
5054 | /* GCC encodes arrays with unspecified or dynamic length | |
5055 | with a DW_FORM_block1 attribute. | |
5056 | FIXME: GDB does not yet know how to handle dynamic | |
5057 | arrays properly, treat them as arrays with unspecified | |
5058 | length for now. | |
5059 | ||
5060 | FIXME: jimb/2003-09-22: GDB does not really know | |
5061 | how to handle arrays of unspecified length | |
5062 | either; we just represent them as zero-length | |
5063 | arrays. Choose an appropriate upper bound given | |
5064 | the lower bound we've computed above. */ | |
5065 | high = low - 1; | |
5066 | } | |
5067 | else | |
5068 | high = dwarf2_get_attr_constant_value (attr, 1); | |
5069 | } | |
5070 | ||
5071 | range_type = create_range_type (NULL, base_type, low, high); | |
5072 | ||
39cbfefa DJ |
5073 | name = dwarf2_name (die, cu); |
5074 | if (name) | |
5075 | TYPE_NAME (range_type) = name; | |
a02abb62 | 5076 | |
e142c38c | 5077 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
5078 | if (attr) |
5079 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
5080 | ||
1c379e20 | 5081 | set_die_type (die, range_type, cu); |
a02abb62 JB |
5082 | } |
5083 | ||
81a17f79 JB |
5084 | static void |
5085 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) | |
5086 | { | |
5087 | struct type *type; | |
81a17f79 JB |
5088 | |
5089 | if (die->type) | |
5090 | return; | |
5091 | ||
5092 | /* For now, we only support the C meaning of an unspecified type: void. */ | |
5093 | ||
39cbfefa | 5094 | type = init_type (TYPE_CODE_VOID, 0, 0, dwarf2_name (die, cu), |
81a17f79 JB |
5095 | cu->objfile); |
5096 | ||
5097 | set_die_type (die, type, cu); | |
5098 | } | |
a02abb62 | 5099 | |
c906108c SS |
5100 | /* Read a whole compilation unit into a linked list of dies. */ |
5101 | ||
f9aca02d | 5102 | static struct die_info * |
fe1b8b76 | 5103 | read_comp_unit (gdb_byte *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5104 | { |
e7c27a73 | 5105 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
5106 | } |
5107 | ||
5108 | /* Read a single die and all its descendents. Set the die's sibling | |
5109 | field to NULL; set other fields in the die correctly, and set all | |
5110 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
5111 | location of the info_ptr after reading all of those dies. PARENT | |
5112 | is the parent of the die in question. */ | |
5113 | ||
5114 | static struct die_info * | |
fe1b8b76 | 5115 | read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 5116 | struct dwarf2_cu *cu, |
fe1b8b76 | 5117 | gdb_byte **new_info_ptr, |
639d11d3 DC |
5118 | struct die_info *parent) |
5119 | { | |
5120 | struct die_info *die; | |
fe1b8b76 | 5121 | gdb_byte *cur_ptr; |
639d11d3 DC |
5122 | int has_children; |
5123 | ||
e7c27a73 | 5124 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
10b3939b | 5125 | store_in_ref_table (die->offset, die, cu); |
639d11d3 DC |
5126 | |
5127 | if (has_children) | |
5128 | { | |
e7c27a73 | 5129 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
5130 | new_info_ptr, die); |
5131 | } | |
5132 | else | |
5133 | { | |
5134 | die->child = NULL; | |
5135 | *new_info_ptr = cur_ptr; | |
5136 | } | |
5137 | ||
5138 | die->sibling = NULL; | |
5139 | die->parent = parent; | |
5140 | return die; | |
5141 | } | |
5142 | ||
5143 | /* Read a die, all of its descendents, and all of its siblings; set | |
5144 | all of the fields of all of the dies correctly. Arguments are as | |
5145 | in read_die_and_children. */ | |
5146 | ||
5147 | static struct die_info * | |
fe1b8b76 | 5148 | read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 5149 | struct dwarf2_cu *cu, |
fe1b8b76 | 5150 | gdb_byte **new_info_ptr, |
639d11d3 DC |
5151 | struct die_info *parent) |
5152 | { | |
5153 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 5154 | gdb_byte *cur_ptr; |
639d11d3 | 5155 | |
c906108c | 5156 | cur_ptr = info_ptr; |
639d11d3 DC |
5157 | first_die = last_sibling = NULL; |
5158 | ||
5159 | while (1) | |
c906108c | 5160 | { |
639d11d3 | 5161 | struct die_info *die |
e7c27a73 | 5162 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
5163 | |
5164 | if (!first_die) | |
c906108c | 5165 | { |
639d11d3 | 5166 | first_die = die; |
c906108c | 5167 | } |
639d11d3 | 5168 | else |
c906108c | 5169 | { |
639d11d3 | 5170 | last_sibling->sibling = die; |
c906108c SS |
5171 | } |
5172 | ||
639d11d3 | 5173 | if (die->tag == 0) |
c906108c | 5174 | { |
639d11d3 DC |
5175 | *new_info_ptr = cur_ptr; |
5176 | return first_die; | |
c906108c SS |
5177 | } |
5178 | else | |
5179 | { | |
639d11d3 | 5180 | last_sibling = die; |
c906108c SS |
5181 | } |
5182 | } | |
c906108c SS |
5183 | } |
5184 | ||
5185 | /* Free a linked list of dies. */ | |
5186 | ||
5187 | static void | |
fba45db2 | 5188 | free_die_list (struct die_info *dies) |
c906108c SS |
5189 | { |
5190 | struct die_info *die, *next; | |
5191 | ||
5192 | die = dies; | |
5193 | while (die) | |
5194 | { | |
639d11d3 DC |
5195 | if (die->child != NULL) |
5196 | free_die_list (die->child); | |
5197 | next = die->sibling; | |
b8c9b27d KB |
5198 | xfree (die->attrs); |
5199 | xfree (die); | |
c906108c SS |
5200 | die = next; |
5201 | } | |
5202 | } | |
5203 | ||
5204 | /* Read the contents of the section at OFFSET and of size SIZE from the | |
8b92e4d5 | 5205 | object file specified by OBJFILE into the objfile_obstack and return it. */ |
c906108c | 5206 | |
fe1b8b76 | 5207 | gdb_byte * |
188dd5d6 | 5208 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
5209 | { |
5210 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 5211 | gdb_byte *buf, *retbuf; |
2c500098 | 5212 | bfd_size_type size = bfd_get_section_size (sectp); |
c906108c SS |
5213 | |
5214 | if (size == 0) | |
5215 | return NULL; | |
5216 | ||
fe1b8b76 JB |
5217 | buf = obstack_alloc (&objfile->objfile_obstack, size); |
5218 | retbuf = symfile_relocate_debug_section (abfd, sectp, buf); | |
086df311 DJ |
5219 | if (retbuf != NULL) |
5220 | return retbuf; | |
5221 | ||
188dd5d6 DJ |
5222 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
5223 | || bfd_bread (buf, size, abfd) != size) | |
8a3fe4f8 | 5224 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
188dd5d6 DJ |
5225 | bfd_get_filename (abfd)); |
5226 | ||
c906108c SS |
5227 | return buf; |
5228 | } | |
5229 | ||
5230 | /* In DWARF version 2, the description of the debugging information is | |
5231 | stored in a separate .debug_abbrev section. Before we read any | |
5232 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
5233 | in a hash table. This function also sets flags in CU describing |
5234 | the data found in the abbrev table. */ | |
c906108c SS |
5235 | |
5236 | static void | |
e7c27a73 | 5237 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5238 | { |
e7c27a73 | 5239 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 5240 | gdb_byte *abbrev_ptr; |
c906108c SS |
5241 | struct abbrev_info *cur_abbrev; |
5242 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
5243 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
5244 | struct attr_abbrev *cur_attrs; |
5245 | unsigned int allocated_attrs; | |
c906108c | 5246 | |
57349743 | 5247 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
5248 | obstack_init (&cu->abbrev_obstack); |
5249 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
5250 | (ABBREV_HASH_SIZE | |
5251 | * sizeof (struct abbrev_info *))); | |
5252 | memset (cu->dwarf2_abbrevs, 0, | |
5253 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 5254 | |
6502dd73 | 5255 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
5256 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5257 | abbrev_ptr += bytes_read; | |
5258 | ||
f3dd6933 DJ |
5259 | allocated_attrs = ATTR_ALLOC_CHUNK; |
5260 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
5261 | ||
c906108c SS |
5262 | /* loop until we reach an abbrev number of 0 */ |
5263 | while (abbrev_number) | |
5264 | { | |
f3dd6933 | 5265 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
5266 | |
5267 | /* read in abbrev header */ | |
5268 | cur_abbrev->number = abbrev_number; | |
5269 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5270 | abbrev_ptr += bytes_read; | |
5271 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
5272 | abbrev_ptr += 1; | |
5273 | ||
72bf9492 DJ |
5274 | if (cur_abbrev->tag == DW_TAG_namespace) |
5275 | cu->has_namespace_info = 1; | |
5276 | ||
c906108c SS |
5277 | /* now read in declarations */ |
5278 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5279 | abbrev_ptr += bytes_read; | |
5280 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5281 | abbrev_ptr += bytes_read; | |
5282 | while (abbrev_name) | |
5283 | { | |
f3dd6933 | 5284 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 5285 | { |
f3dd6933 DJ |
5286 | allocated_attrs += ATTR_ALLOC_CHUNK; |
5287 | cur_attrs | |
5288 | = xrealloc (cur_attrs, (allocated_attrs | |
5289 | * sizeof (struct attr_abbrev))); | |
c906108c | 5290 | } |
ae038cb0 DJ |
5291 | |
5292 | /* Record whether this compilation unit might have | |
5293 | inter-compilation-unit references. If we don't know what form | |
5294 | this attribute will have, then it might potentially be a | |
5295 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
5296 | references. */ | |
5297 | ||
5298 | if (abbrev_form == DW_FORM_ref_addr | |
5299 | || abbrev_form == DW_FORM_indirect) | |
5300 | cu->has_form_ref_addr = 1; | |
5301 | ||
f3dd6933 DJ |
5302 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
5303 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
5304 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5305 | abbrev_ptr += bytes_read; | |
5306 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5307 | abbrev_ptr += bytes_read; | |
5308 | } | |
5309 | ||
f3dd6933 DJ |
5310 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
5311 | (cur_abbrev->num_attrs | |
5312 | * sizeof (struct attr_abbrev))); | |
5313 | memcpy (cur_abbrev->attrs, cur_attrs, | |
5314 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
5315 | ||
c906108c | 5316 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
5317 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
5318 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
5319 | |
5320 | /* Get next abbreviation. | |
5321 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
5322 | always properly terminated with an abbrev number of 0. |
5323 | Exit loop if we encounter an abbreviation which we have | |
5324 | already read (which means we are about to read the abbreviations | |
5325 | for the next compile unit) or if the end of the abbreviation | |
5326 | table is reached. */ | |
6502dd73 DJ |
5327 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev_buffer) |
5328 | >= dwarf2_per_objfile->abbrev_size) | |
c906108c SS |
5329 | break; |
5330 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5331 | abbrev_ptr += bytes_read; | |
e7c27a73 | 5332 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
5333 | break; |
5334 | } | |
f3dd6933 DJ |
5335 | |
5336 | xfree (cur_attrs); | |
c906108c SS |
5337 | } |
5338 | ||
f3dd6933 | 5339 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 5340 | |
c906108c | 5341 | static void |
f3dd6933 | 5342 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 5343 | { |
f3dd6933 | 5344 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 5345 | |
f3dd6933 DJ |
5346 | obstack_free (&cu->abbrev_obstack, NULL); |
5347 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
5348 | } |
5349 | ||
5350 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
5351 | ||
5352 | static struct abbrev_info * | |
e7c27a73 | 5353 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
5354 | { |
5355 | unsigned int hash_number; | |
5356 | struct abbrev_info *abbrev; | |
5357 | ||
5358 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 5359 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
5360 | |
5361 | while (abbrev) | |
5362 | { | |
5363 | if (abbrev->number == number) | |
5364 | return abbrev; | |
5365 | else | |
5366 | abbrev = abbrev->next; | |
5367 | } | |
5368 | return NULL; | |
5369 | } | |
5370 | ||
72bf9492 DJ |
5371 | /* Returns nonzero if TAG represents a type that we might generate a partial |
5372 | symbol for. */ | |
5373 | ||
5374 | static int | |
5375 | is_type_tag_for_partial (int tag) | |
5376 | { | |
5377 | switch (tag) | |
5378 | { | |
5379 | #if 0 | |
5380 | /* Some types that would be reasonable to generate partial symbols for, | |
5381 | that we don't at present. */ | |
5382 | case DW_TAG_array_type: | |
5383 | case DW_TAG_file_type: | |
5384 | case DW_TAG_ptr_to_member_type: | |
5385 | case DW_TAG_set_type: | |
5386 | case DW_TAG_string_type: | |
5387 | case DW_TAG_subroutine_type: | |
5388 | #endif | |
5389 | case DW_TAG_base_type: | |
5390 | case DW_TAG_class_type: | |
5391 | case DW_TAG_enumeration_type: | |
5392 | case DW_TAG_structure_type: | |
5393 | case DW_TAG_subrange_type: | |
5394 | case DW_TAG_typedef: | |
5395 | case DW_TAG_union_type: | |
5396 | return 1; | |
5397 | default: | |
5398 | return 0; | |
5399 | } | |
5400 | } | |
5401 | ||
5402 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
5403 | ||
5404 | static struct partial_die_info * | |
fe1b8b76 | 5405 | load_partial_dies (bfd *abfd, gdb_byte *info_ptr, int building_psymtab, |
72bf9492 DJ |
5406 | struct dwarf2_cu *cu) |
5407 | { | |
5408 | struct partial_die_info *part_die; | |
5409 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
5410 | struct abbrev_info *abbrev; | |
5411 | unsigned int bytes_read; | |
5afb4e99 | 5412 | unsigned int load_all = 0; |
72bf9492 DJ |
5413 | |
5414 | int nesting_level = 1; | |
5415 | ||
5416 | parent_die = NULL; | |
5417 | last_die = NULL; | |
5418 | ||
5afb4e99 DJ |
5419 | if (cu->per_cu && cu->per_cu->load_all_dies) |
5420 | load_all = 1; | |
5421 | ||
72bf9492 DJ |
5422 | cu->partial_dies |
5423 | = htab_create_alloc_ex (cu->header.length / 12, | |
5424 | partial_die_hash, | |
5425 | partial_die_eq, | |
5426 | NULL, | |
5427 | &cu->comp_unit_obstack, | |
5428 | hashtab_obstack_allocate, | |
5429 | dummy_obstack_deallocate); | |
5430 | ||
5431 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5432 | sizeof (struct partial_die_info)); | |
5433 | ||
5434 | while (1) | |
5435 | { | |
5436 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5437 | ||
5438 | /* A NULL abbrev means the end of a series of children. */ | |
5439 | if (abbrev == NULL) | |
5440 | { | |
5441 | if (--nesting_level == 0) | |
5442 | { | |
5443 | /* PART_DIE was probably the last thing allocated on the | |
5444 | comp_unit_obstack, so we could call obstack_free | |
5445 | here. We don't do that because the waste is small, | |
5446 | and will be cleaned up when we're done with this | |
5447 | compilation unit. This way, we're also more robust | |
5448 | against other users of the comp_unit_obstack. */ | |
5449 | return first_die; | |
5450 | } | |
5451 | info_ptr += bytes_read; | |
5452 | last_die = parent_die; | |
5453 | parent_die = parent_die->die_parent; | |
5454 | continue; | |
5455 | } | |
5456 | ||
5afb4e99 DJ |
5457 | /* Check whether this DIE is interesting enough to save. Normally |
5458 | we would not be interested in members here, but there may be | |
5459 | later variables referencing them via DW_AT_specification (for | |
5460 | static members). */ | |
5461 | if (!load_all | |
5462 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
5463 | && abbrev->tag != DW_TAG_enumerator |
5464 | && abbrev->tag != DW_TAG_subprogram | |
5465 | && abbrev->tag != DW_TAG_variable | |
5afb4e99 DJ |
5466 | && abbrev->tag != DW_TAG_namespace |
5467 | && abbrev->tag != DW_TAG_member) | |
72bf9492 DJ |
5468 | { |
5469 | /* Otherwise we skip to the next sibling, if any. */ | |
5470 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
5471 | continue; | |
5472 | } | |
5473 | ||
5474 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, | |
5475 | abfd, info_ptr, cu); | |
5476 | ||
5477 | /* This two-pass algorithm for processing partial symbols has a | |
5478 | high cost in cache pressure. Thus, handle some simple cases | |
5479 | here which cover the majority of C partial symbols. DIEs | |
5480 | which neither have specification tags in them, nor could have | |
5481 | specification tags elsewhere pointing at them, can simply be | |
5482 | processed and discarded. | |
5483 | ||
5484 | This segment is also optional; scan_partial_symbols and | |
5485 | add_partial_symbol will handle these DIEs if we chain | |
5486 | them in normally. When compilers which do not emit large | |
5487 | quantities of duplicate debug information are more common, | |
5488 | this code can probably be removed. */ | |
5489 | ||
5490 | /* Any complete simple types at the top level (pretty much all | |
5491 | of them, for a language without namespaces), can be processed | |
5492 | directly. */ | |
5493 | if (parent_die == NULL | |
5494 | && part_die->has_specification == 0 | |
5495 | && part_die->is_declaration == 0 | |
5496 | && (part_die->tag == DW_TAG_typedef | |
5497 | || part_die->tag == DW_TAG_base_type | |
5498 | || part_die->tag == DW_TAG_subrange_type)) | |
5499 | { | |
5500 | if (building_psymtab && part_die->name != NULL) | |
5501 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5502 | VAR_DOMAIN, LOC_TYPEDEF, | |
5503 | &cu->objfile->static_psymbols, | |
5504 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5505 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5506 | continue; | |
5507 | } | |
5508 | ||
5509 | /* If we're at the second level, and we're an enumerator, and | |
5510 | our parent has no specification (meaning possibly lives in a | |
5511 | namespace elsewhere), then we can add the partial symbol now | |
5512 | instead of queueing it. */ | |
5513 | if (part_die->tag == DW_TAG_enumerator | |
5514 | && parent_die != NULL | |
5515 | && parent_die->die_parent == NULL | |
5516 | && parent_die->tag == DW_TAG_enumeration_type | |
5517 | && parent_die->has_specification == 0) | |
5518 | { | |
5519 | if (part_die->name == NULL) | |
e2e0b3e5 | 5520 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 DJ |
5521 | else if (building_psymtab) |
5522 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5523 | VAR_DOMAIN, LOC_CONST, | |
987504bb JJ |
5524 | (cu->language == language_cplus |
5525 | || cu->language == language_java) | |
72bf9492 DJ |
5526 | ? &cu->objfile->global_psymbols |
5527 | : &cu->objfile->static_psymbols, | |
5528 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5529 | ||
5530 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5531 | continue; | |
5532 | } | |
5533 | ||
5534 | /* We'll save this DIE so link it in. */ | |
5535 | part_die->die_parent = parent_die; | |
5536 | part_die->die_sibling = NULL; | |
5537 | part_die->die_child = NULL; | |
5538 | ||
5539 | if (last_die && last_die == parent_die) | |
5540 | last_die->die_child = part_die; | |
5541 | else if (last_die) | |
5542 | last_die->die_sibling = part_die; | |
5543 | ||
5544 | last_die = part_die; | |
5545 | ||
5546 | if (first_die == NULL) | |
5547 | first_die = part_die; | |
5548 | ||
5549 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
5550 | find interesting need to be in the hash table, because we | |
5551 | also have the parent/sibling/child chains; only those that we | |
5552 | might refer to by offset later during partial symbol reading. | |
5553 | ||
5554 | For now this means things that might have be the target of a | |
5555 | DW_AT_specification, DW_AT_abstract_origin, or | |
5556 | DW_AT_extension. DW_AT_extension will refer only to | |
5557 | namespaces; DW_AT_abstract_origin refers to functions (and | |
5558 | many things under the function DIE, but we do not recurse | |
5559 | into function DIEs during partial symbol reading) and | |
5560 | possibly variables as well; DW_AT_specification refers to | |
5561 | declarations. Declarations ought to have the DW_AT_declaration | |
5562 | flag. It happens that GCC forgets to put it in sometimes, but | |
5563 | only for functions, not for types. | |
5564 | ||
5565 | Adding more things than necessary to the hash table is harmless | |
5566 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
5567 | wasted time in find_partial_die, when we reread the compilation |
5568 | unit with load_all_dies set. */ | |
72bf9492 | 5569 | |
5afb4e99 DJ |
5570 | if (load_all |
5571 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
5572 | || abbrev->tag == DW_TAG_variable |
5573 | || abbrev->tag == DW_TAG_namespace | |
5574 | || part_die->is_declaration) | |
5575 | { | |
5576 | void **slot; | |
5577 | ||
5578 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
5579 | part_die->offset, INSERT); | |
5580 | *slot = part_die; | |
5581 | } | |
5582 | ||
5583 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5584 | sizeof (struct partial_die_info)); | |
5585 | ||
5586 | /* For some DIEs we want to follow their children (if any). For C | |
5587 | we have no reason to follow the children of structures; for other | |
5588 | languages we have to, both so that we can get at method physnames | |
5589 | to infer fully qualified class names, and for DW_AT_specification. */ | |
5590 | if (last_die->has_children | |
5afb4e99 DJ |
5591 | && (load_all |
5592 | || last_die->tag == DW_TAG_namespace | |
72bf9492 DJ |
5593 | || last_die->tag == DW_TAG_enumeration_type |
5594 | || (cu->language != language_c | |
5595 | && (last_die->tag == DW_TAG_class_type | |
5596 | || last_die->tag == DW_TAG_structure_type | |
5597 | || last_die->tag == DW_TAG_union_type)))) | |
5598 | { | |
5599 | nesting_level++; | |
5600 | parent_die = last_die; | |
5601 | continue; | |
5602 | } | |
5603 | ||
5604 | /* Otherwise we skip to the next sibling, if any. */ | |
5605 | info_ptr = locate_pdi_sibling (last_die, info_ptr, abfd, cu); | |
5606 | ||
5607 | /* Back to the top, do it again. */ | |
5608 | } | |
5609 | } | |
5610 | ||
c906108c SS |
5611 | /* Read a minimal amount of information into the minimal die structure. */ |
5612 | ||
fe1b8b76 | 5613 | static gdb_byte * |
72bf9492 DJ |
5614 | read_partial_die (struct partial_die_info *part_die, |
5615 | struct abbrev_info *abbrev, | |
5616 | unsigned int abbrev_len, bfd *abfd, | |
fe1b8b76 | 5617 | gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 5618 | { |
72bf9492 | 5619 | unsigned int bytes_read, i; |
c906108c | 5620 | struct attribute attr; |
c5aa993b | 5621 | int has_low_pc_attr = 0; |
c906108c SS |
5622 | int has_high_pc_attr = 0; |
5623 | ||
72bf9492 | 5624 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 5625 | |
6502dd73 | 5626 | part_die->offset = info_ptr - dwarf2_per_objfile->info_buffer; |
72bf9492 DJ |
5627 | |
5628 | info_ptr += abbrev_len; | |
5629 | ||
5630 | if (abbrev == NULL) | |
5631 | return info_ptr; | |
5632 | ||
c906108c SS |
5633 | part_die->tag = abbrev->tag; |
5634 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
5635 | |
5636 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5637 | { | |
e7c27a73 | 5638 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
5639 | |
5640 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 5641 | partial symbol table. */ |
c906108c SS |
5642 | switch (attr.name) |
5643 | { | |
5644 | case DW_AT_name: | |
5645 | ||
5646 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
5647 | if (part_die->name == NULL) | |
5648 | part_die->name = DW_STRING (&attr); | |
5649 | break; | |
57c22c6c BR |
5650 | case DW_AT_comp_dir: |
5651 | if (part_die->dirname == NULL) | |
5652 | part_die->dirname = DW_STRING (&attr); | |
5653 | break; | |
c906108c SS |
5654 | case DW_AT_MIPS_linkage_name: |
5655 | part_die->name = DW_STRING (&attr); | |
5656 | break; | |
5657 | case DW_AT_low_pc: | |
5658 | has_low_pc_attr = 1; | |
5659 | part_die->lowpc = DW_ADDR (&attr); | |
5660 | break; | |
5661 | case DW_AT_high_pc: | |
5662 | has_high_pc_attr = 1; | |
5663 | part_die->highpc = DW_ADDR (&attr); | |
5664 | break; | |
43039443 JK |
5665 | case DW_AT_ranges: |
5666 | if (dwarf2_ranges_read (DW_UNSND (&attr), &part_die->lowpc, | |
5667 | &part_die->highpc, cu)) | |
5668 | has_low_pc_attr = has_high_pc_attr = 1; | |
5669 | break; | |
c906108c | 5670 | case DW_AT_location: |
8e19ed76 PS |
5671 | /* Support the .debug_loc offsets */ |
5672 | if (attr_form_is_block (&attr)) | |
5673 | { | |
5674 | part_die->locdesc = DW_BLOCK (&attr); | |
5675 | } | |
5676 | else if (attr.form == DW_FORM_data4 || attr.form == DW_FORM_data8) | |
5677 | { | |
4d3c2250 | 5678 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5679 | } |
5680 | else | |
5681 | { | |
4d3c2250 KB |
5682 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
5683 | "partial symbol information"); | |
8e19ed76 | 5684 | } |
c906108c SS |
5685 | break; |
5686 | case DW_AT_language: | |
5687 | part_die->language = DW_UNSND (&attr); | |
5688 | break; | |
5689 | case DW_AT_external: | |
5690 | part_die->is_external = DW_UNSND (&attr); | |
5691 | break; | |
5692 | case DW_AT_declaration: | |
5693 | part_die->is_declaration = DW_UNSND (&attr); | |
5694 | break; | |
5695 | case DW_AT_type: | |
5696 | part_die->has_type = 1; | |
5697 | break; | |
5698 | case DW_AT_abstract_origin: | |
5699 | case DW_AT_specification: | |
72bf9492 DJ |
5700 | case DW_AT_extension: |
5701 | part_die->has_specification = 1; | |
5702 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c SS |
5703 | break; |
5704 | case DW_AT_sibling: | |
5705 | /* Ignore absolute siblings, they might point outside of | |
5706 | the current compile unit. */ | |
5707 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 5708 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 5709 | else |
6502dd73 DJ |
5710 | part_die->sibling = dwarf2_per_objfile->info_buffer |
5711 | + dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c | 5712 | break; |
aaa75496 JB |
5713 | case DW_AT_stmt_list: |
5714 | part_die->has_stmt_list = 1; | |
5715 | part_die->line_offset = DW_UNSND (&attr); | |
5716 | break; | |
fa4028e9 JB |
5717 | case DW_AT_byte_size: |
5718 | part_die->has_byte_size = 1; | |
5719 | break; | |
68511cec CES |
5720 | case DW_AT_calling_convention: |
5721 | /* DWARF doesn't provide a way to identify a program's source-level | |
5722 | entry point. DW_AT_calling_convention attributes are only meant | |
5723 | to describe functions' calling conventions. | |
5724 | ||
5725 | However, because it's a necessary piece of information in | |
5726 | Fortran, and because DW_CC_program is the only piece of debugging | |
5727 | information whose definition refers to a 'main program' at all, | |
5728 | several compilers have begun marking Fortran main programs with | |
5729 | DW_CC_program --- even when those functions use the standard | |
5730 | calling conventions. | |
5731 | ||
5732 | So until DWARF specifies a way to provide this information and | |
5733 | compilers pick up the new representation, we'll support this | |
5734 | practice. */ | |
5735 | if (DW_UNSND (&attr) == DW_CC_program | |
5736 | && cu->language == language_fortran) | |
5737 | set_main_name (part_die->name); | |
5738 | break; | |
c906108c SS |
5739 | default: |
5740 | break; | |
5741 | } | |
5742 | } | |
5743 | ||
c906108c SS |
5744 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
5745 | eliminate duplicate copies of functions and vtables and such. | |
5746 | The linker will arbitrarily choose one and discard the others. | |
5747 | The AT_*_pc values for such functions refer to local labels in | |
5748 | these sections. If the section from that file was discarded, the | |
5749 | labels are not in the output, so the relocs get a value of 0. | |
5750 | If this is a discarded function, mark the pc bounds as invalid, | |
5751 | so that GDB will ignore it. */ | |
5752 | if (has_low_pc_attr && has_high_pc_attr | |
5753 | && part_die->lowpc < part_die->highpc | |
5754 | && (part_die->lowpc != 0 | |
72dca2f5 | 5755 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 5756 | part_die->has_pc_info = 1; |
c906108c SS |
5757 | return info_ptr; |
5758 | } | |
5759 | ||
72bf9492 DJ |
5760 | /* Find a cached partial DIE at OFFSET in CU. */ |
5761 | ||
5762 | static struct partial_die_info * | |
5763 | find_partial_die_in_comp_unit (unsigned long offset, struct dwarf2_cu *cu) | |
5764 | { | |
5765 | struct partial_die_info *lookup_die = NULL; | |
5766 | struct partial_die_info part_die; | |
5767 | ||
5768 | part_die.offset = offset; | |
5769 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
5770 | ||
72bf9492 DJ |
5771 | return lookup_die; |
5772 | } | |
5773 | ||
5774 | /* Find a partial DIE at OFFSET, which may or may not be in CU. */ | |
5775 | ||
5776 | static struct partial_die_info * | |
10b3939b | 5777 | find_partial_die (unsigned long offset, struct dwarf2_cu *cu) |
72bf9492 | 5778 | { |
5afb4e99 DJ |
5779 | struct dwarf2_per_cu_data *per_cu = NULL; |
5780 | struct partial_die_info *pd = NULL; | |
72bf9492 DJ |
5781 | |
5782 | if (offset >= cu->header.offset | |
5783 | && offset < cu->header.offset + cu->header.length) | |
5afb4e99 DJ |
5784 | { |
5785 | pd = find_partial_die_in_comp_unit (offset, cu); | |
5786 | if (pd != NULL) | |
5787 | return pd; | |
5788 | } | |
72bf9492 | 5789 | |
ae038cb0 DJ |
5790 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
5791 | ||
ae038cb0 DJ |
5792 | if (per_cu->cu == NULL) |
5793 | { | |
5794 | load_comp_unit (per_cu, cu->objfile); | |
5795 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5796 | dwarf2_per_objfile->read_in_chain = per_cu; | |
5797 | } | |
5798 | ||
5799 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
5800 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
5801 | ||
5802 | if (pd == NULL && per_cu->load_all_dies == 0) | |
5803 | { | |
5804 | struct cleanup *back_to; | |
5805 | struct partial_die_info comp_unit_die; | |
5806 | struct abbrev_info *abbrev; | |
5807 | unsigned int bytes_read; | |
5808 | char *info_ptr; | |
5809 | ||
5810 | per_cu->load_all_dies = 1; | |
5811 | ||
5812 | /* Re-read the DIEs. */ | |
5813 | back_to = make_cleanup (null_cleanup, 0); | |
5814 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
5815 | { | |
5816 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
5817 | back_to = make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); | |
5818 | } | |
5819 | info_ptr = per_cu->cu->header.first_die_ptr; | |
5820 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); | |
5821 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
5822 | per_cu->cu->objfile->obfd, info_ptr, | |
5823 | per_cu->cu); | |
5824 | if (comp_unit_die.has_children) | |
5825 | load_partial_dies (per_cu->cu->objfile->obfd, info_ptr, 0, per_cu->cu); | |
5826 | do_cleanups (back_to); | |
5827 | ||
5828 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
5829 | } | |
5830 | ||
5831 | if (pd == NULL) | |
5832 | internal_error (__FILE__, __LINE__, | |
5833 | _("could not find partial DIE 0x%lx in cache [from module %s]\n"), | |
5834 | offset, bfd_get_filename (cu->objfile->obfd)); | |
5835 | return pd; | |
72bf9492 DJ |
5836 | } |
5837 | ||
5838 | /* Adjust PART_DIE before generating a symbol for it. This function | |
5839 | may set the is_external flag or change the DIE's name. */ | |
5840 | ||
5841 | static void | |
5842 | fixup_partial_die (struct partial_die_info *part_die, | |
5843 | struct dwarf2_cu *cu) | |
5844 | { | |
5845 | /* If we found a reference attribute and the DIE has no name, try | |
5846 | to find a name in the referred to DIE. */ | |
5847 | ||
5848 | if (part_die->name == NULL && part_die->has_specification) | |
5849 | { | |
5850 | struct partial_die_info *spec_die; | |
72bf9492 | 5851 | |
10b3939b | 5852 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 5853 | |
10b3939b | 5854 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
5855 | |
5856 | if (spec_die->name) | |
5857 | { | |
5858 | part_die->name = spec_die->name; | |
5859 | ||
5860 | /* Copy DW_AT_external attribute if it is set. */ | |
5861 | if (spec_die->is_external) | |
5862 | part_die->is_external = spec_die->is_external; | |
5863 | } | |
5864 | } | |
5865 | ||
5866 | /* Set default names for some unnamed DIEs. */ | |
5867 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
5868 | || part_die->tag == DW_TAG_class_type)) | |
5869 | part_die->name = "(anonymous class)"; | |
5870 | ||
5871 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
5872 | part_die->name = "(anonymous namespace)"; | |
5873 | ||
5874 | if (part_die->tag == DW_TAG_structure_type | |
5875 | || part_die->tag == DW_TAG_class_type | |
5876 | || part_die->tag == DW_TAG_union_type) | |
5877 | guess_structure_name (part_die, cu); | |
5878 | } | |
5879 | ||
639d11d3 DC |
5880 | /* Read the die from the .debug_info section buffer. Set DIEP to |
5881 | point to a newly allocated die with its information, except for its | |
5882 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
5883 | whether the die has children or not. */ | |
c906108c | 5884 | |
fe1b8b76 JB |
5885 | static gdb_byte * |
5886 | read_full_die (struct die_info **diep, bfd *abfd, gdb_byte *info_ptr, | |
e7c27a73 | 5887 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
5888 | { |
5889 | unsigned int abbrev_number, bytes_read, i, offset; | |
5890 | struct abbrev_info *abbrev; | |
5891 | struct die_info *die; | |
5892 | ||
6502dd73 | 5893 | offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
5894 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5895 | info_ptr += bytes_read; | |
5896 | if (!abbrev_number) | |
5897 | { | |
5898 | die = dwarf_alloc_die (); | |
5899 | die->tag = 0; | |
5900 | die->abbrev = abbrev_number; | |
5901 | die->type = NULL; | |
5902 | *diep = die; | |
639d11d3 | 5903 | *has_children = 0; |
c906108c SS |
5904 | return info_ptr; |
5905 | } | |
5906 | ||
e7c27a73 | 5907 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
5908 | if (!abbrev) |
5909 | { | |
8a3fe4f8 | 5910 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
72bf9492 | 5911 | abbrev_number, |
639d11d3 | 5912 | bfd_get_filename (abfd)); |
c906108c SS |
5913 | } |
5914 | die = dwarf_alloc_die (); | |
5915 | die->offset = offset; | |
5916 | die->tag = abbrev->tag; | |
c906108c SS |
5917 | die->abbrev = abbrev_number; |
5918 | die->type = NULL; | |
5919 | ||
5920 | die->num_attrs = abbrev->num_attrs; | |
5921 | die->attrs = (struct attribute *) | |
5922 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
5923 | ||
5924 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5925 | { | |
5926 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 5927 | abfd, info_ptr, cu); |
10b3939b DJ |
5928 | |
5929 | /* If this attribute is an absolute reference to a different | |
5930 | compilation unit, make sure that compilation unit is loaded | |
5931 | also. */ | |
5932 | if (die->attrs[i].form == DW_FORM_ref_addr | |
5933 | && (DW_ADDR (&die->attrs[i]) < cu->header.offset | |
5934 | || (DW_ADDR (&die->attrs[i]) | |
5935 | >= cu->header.offset + cu->header.length))) | |
5936 | { | |
5937 | struct dwarf2_per_cu_data *per_cu; | |
5938 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (&die->attrs[i]), | |
5939 | cu->objfile); | |
5940 | ||
5941 | /* Mark the dependence relation so that we don't flush PER_CU | |
5942 | too early. */ | |
5943 | dwarf2_add_dependence (cu, per_cu); | |
5944 | ||
5945 | /* If it's already on the queue, we have nothing to do. */ | |
5946 | if (per_cu->queued) | |
5947 | continue; | |
5948 | ||
5949 | /* If the compilation unit is already loaded, just mark it as | |
5950 | used. */ | |
5951 | if (per_cu->cu != NULL) | |
5952 | { | |
5953 | per_cu->cu->last_used = 0; | |
5954 | continue; | |
5955 | } | |
5956 | ||
5957 | /* Add it to the queue. */ | |
5958 | queue_comp_unit (per_cu); | |
5959 | } | |
c906108c SS |
5960 | } |
5961 | ||
5962 | *diep = die; | |
639d11d3 | 5963 | *has_children = abbrev->has_children; |
c906108c SS |
5964 | return info_ptr; |
5965 | } | |
5966 | ||
a8329558 | 5967 | /* Read an attribute value described by an attribute form. */ |
c906108c | 5968 | |
fe1b8b76 | 5969 | static gdb_byte * |
a8329558 | 5970 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 5971 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 5972 | struct dwarf2_cu *cu) |
c906108c | 5973 | { |
e7c27a73 | 5974 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5975 | unsigned int bytes_read; |
5976 | struct dwarf_block *blk; | |
5977 | ||
a8329558 KW |
5978 | attr->form = form; |
5979 | switch (form) | |
c906108c SS |
5980 | { |
5981 | case DW_FORM_addr: | |
5982 | case DW_FORM_ref_addr: | |
e7c27a73 | 5983 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 5984 | info_ptr += bytes_read; |
c906108c SS |
5985 | break; |
5986 | case DW_FORM_block2: | |
7b5a2f43 | 5987 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5988 | blk->size = read_2_bytes (abfd, info_ptr); |
5989 | info_ptr += 2; | |
5990 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5991 | info_ptr += blk->size; | |
5992 | DW_BLOCK (attr) = blk; | |
5993 | break; | |
5994 | case DW_FORM_block4: | |
7b5a2f43 | 5995 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5996 | blk->size = read_4_bytes (abfd, info_ptr); |
5997 | info_ptr += 4; | |
5998 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5999 | info_ptr += blk->size; | |
6000 | DW_BLOCK (attr) = blk; | |
6001 | break; | |
6002 | case DW_FORM_data2: | |
6003 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
6004 | info_ptr += 2; | |
6005 | break; | |
6006 | case DW_FORM_data4: | |
6007 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
6008 | info_ptr += 4; | |
6009 | break; | |
6010 | case DW_FORM_data8: | |
6011 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
6012 | info_ptr += 8; | |
6013 | break; | |
6014 | case DW_FORM_string: | |
6015 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
6016 | info_ptr += bytes_read; | |
6017 | break; | |
4bdf3d34 JJ |
6018 | case DW_FORM_strp: |
6019 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
6020 | &bytes_read); | |
6021 | info_ptr += bytes_read; | |
6022 | break; | |
c906108c | 6023 | case DW_FORM_block: |
7b5a2f43 | 6024 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6025 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6026 | info_ptr += bytes_read; | |
6027 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6028 | info_ptr += blk->size; | |
6029 | DW_BLOCK (attr) = blk; | |
6030 | break; | |
6031 | case DW_FORM_block1: | |
7b5a2f43 | 6032 | blk = dwarf_alloc_block (cu); |
c906108c SS |
6033 | blk->size = read_1_byte (abfd, info_ptr); |
6034 | info_ptr += 1; | |
6035 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
6036 | info_ptr += blk->size; | |
6037 | DW_BLOCK (attr) = blk; | |
6038 | break; | |
6039 | case DW_FORM_data1: | |
6040 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
6041 | info_ptr += 1; | |
6042 | break; | |
6043 | case DW_FORM_flag: | |
6044 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
6045 | info_ptr += 1; | |
6046 | break; | |
6047 | case DW_FORM_sdata: | |
6048 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
6049 | info_ptr += bytes_read; | |
6050 | break; | |
6051 | case DW_FORM_udata: | |
6052 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
6053 | info_ptr += bytes_read; | |
6054 | break; | |
6055 | case DW_FORM_ref1: | |
10b3939b | 6056 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
6057 | info_ptr += 1; |
6058 | break; | |
6059 | case DW_FORM_ref2: | |
10b3939b | 6060 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
6061 | info_ptr += 2; |
6062 | break; | |
6063 | case DW_FORM_ref4: | |
10b3939b | 6064 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
6065 | info_ptr += 4; |
6066 | break; | |
613e1657 | 6067 | case DW_FORM_ref8: |
10b3939b | 6068 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
6069 | info_ptr += 8; |
6070 | break; | |
c906108c | 6071 | case DW_FORM_ref_udata: |
10b3939b DJ |
6072 | DW_ADDR (attr) = (cu->header.offset |
6073 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
6074 | info_ptr += bytes_read; |
6075 | break; | |
c906108c | 6076 | case DW_FORM_indirect: |
a8329558 KW |
6077 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
6078 | info_ptr += bytes_read; | |
e7c27a73 | 6079 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 6080 | break; |
c906108c | 6081 | default: |
8a3fe4f8 | 6082 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
6083 | dwarf_form_name (form), |
6084 | bfd_get_filename (abfd)); | |
c906108c SS |
6085 | } |
6086 | return info_ptr; | |
6087 | } | |
6088 | ||
a8329558 KW |
6089 | /* Read an attribute described by an abbreviated attribute. */ |
6090 | ||
fe1b8b76 | 6091 | static gdb_byte * |
a8329558 | 6092 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 6093 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
6094 | { |
6095 | attr->name = abbrev->name; | |
e7c27a73 | 6096 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
6097 | } |
6098 | ||
c906108c SS |
6099 | /* read dwarf information from a buffer */ |
6100 | ||
6101 | static unsigned int | |
fe1b8b76 | 6102 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 6103 | { |
fe1b8b76 | 6104 | return bfd_get_8 (abfd, buf); |
c906108c SS |
6105 | } |
6106 | ||
6107 | static int | |
fe1b8b76 | 6108 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 6109 | { |
fe1b8b76 | 6110 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
6111 | } |
6112 | ||
6113 | static unsigned int | |
fe1b8b76 | 6114 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6115 | { |
fe1b8b76 | 6116 | return bfd_get_16 (abfd, buf); |
c906108c SS |
6117 | } |
6118 | ||
6119 | static int | |
fe1b8b76 | 6120 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6121 | { |
fe1b8b76 | 6122 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
6123 | } |
6124 | ||
6125 | static unsigned int | |
fe1b8b76 | 6126 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6127 | { |
fe1b8b76 | 6128 | return bfd_get_32 (abfd, buf); |
c906108c SS |
6129 | } |
6130 | ||
6131 | static int | |
fe1b8b76 | 6132 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6133 | { |
fe1b8b76 | 6134 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
6135 | } |
6136 | ||
ce5d95e1 | 6137 | static unsigned long |
fe1b8b76 | 6138 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 6139 | { |
fe1b8b76 | 6140 | return bfd_get_64 (abfd, buf); |
c906108c SS |
6141 | } |
6142 | ||
6143 | static CORE_ADDR | |
fe1b8b76 | 6144 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 6145 | unsigned int *bytes_read) |
c906108c | 6146 | { |
e7c27a73 | 6147 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
6148 | CORE_ADDR retval = 0; |
6149 | ||
107d2387 | 6150 | if (cu_header->signed_addr_p) |
c906108c | 6151 | { |
107d2387 AC |
6152 | switch (cu_header->addr_size) |
6153 | { | |
6154 | case 2: | |
fe1b8b76 | 6155 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
6156 | break; |
6157 | case 4: | |
fe1b8b76 | 6158 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
6159 | break; |
6160 | case 8: | |
fe1b8b76 | 6161 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
6162 | break; |
6163 | default: | |
8e65ff28 | 6164 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6165 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 6166 | bfd_get_filename (abfd)); |
107d2387 AC |
6167 | } |
6168 | } | |
6169 | else | |
6170 | { | |
6171 | switch (cu_header->addr_size) | |
6172 | { | |
6173 | case 2: | |
fe1b8b76 | 6174 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
6175 | break; |
6176 | case 4: | |
fe1b8b76 | 6177 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
6178 | break; |
6179 | case 8: | |
fe1b8b76 | 6180 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
6181 | break; |
6182 | default: | |
8e65ff28 | 6183 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6184 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 6185 | bfd_get_filename (abfd)); |
107d2387 | 6186 | } |
c906108c | 6187 | } |
64367e0a | 6188 | |
107d2387 AC |
6189 | *bytes_read = cu_header->addr_size; |
6190 | return retval; | |
c906108c SS |
6191 | } |
6192 | ||
f7ef9339 | 6193 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
6194 | specification allows the initial length to take up either 4 bytes |
6195 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
6196 | bytes describe the length and all offsets will be 8 bytes in length | |
6197 | instead of 4. | |
6198 | ||
f7ef9339 KB |
6199 | An older, non-standard 64-bit format is also handled by this |
6200 | function. The older format in question stores the initial length | |
6201 | as an 8-byte quantity without an escape value. Lengths greater | |
6202 | than 2^32 aren't very common which means that the initial 4 bytes | |
6203 | is almost always zero. Since a length value of zero doesn't make | |
6204 | sense for the 32-bit format, this initial zero can be considered to | |
6205 | be an escape value which indicates the presence of the older 64-bit | |
6206 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
6207 | greater than 4GB. If it becomes necessary to handle lengths |
6208 | somewhat larger than 4GB, we could allow other small values (such | |
6209 | as the non-sensical values of 1, 2, and 3) to also be used as | |
6210 | escape values indicating the presence of the old format. | |
f7ef9339 | 6211 | |
917c78fc MK |
6212 | The value returned via bytes_read should be used to increment the |
6213 | relevant pointer after calling read_initial_length(). | |
613e1657 KB |
6214 | |
6215 | As a side effect, this function sets the fields initial_length_size | |
6216 | and offset_size in cu_header to the values appropriate for the | |
6217 | length field. (The format of the initial length field determines | |
dd373385 | 6218 | the width of file offsets to be fetched later with read_offset().) |
613e1657 KB |
6219 | |
6220 | [ Note: read_initial_length() and read_offset() are based on the | |
6221 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 6222 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
6223 | from: |
6224 | ||
f7ef9339 | 6225 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
6226 | |
6227 | This document is only a draft and is subject to change. (So beware.) | |
6228 | ||
f7ef9339 | 6229 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
6230 | determined empirically by examining 64-bit ELF files produced by |
6231 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
6232 | |
6233 | - Kevin, July 16, 2002 | |
613e1657 KB |
6234 | ] */ |
6235 | ||
6236 | static LONGEST | |
fe1b8b76 | 6237 | read_initial_length (bfd *abfd, gdb_byte *buf, struct comp_unit_head *cu_header, |
891d2f0b | 6238 | unsigned int *bytes_read) |
613e1657 | 6239 | { |
fe1b8b76 | 6240 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 6241 | |
dd373385 | 6242 | if (length == 0xffffffff) |
613e1657 | 6243 | { |
fe1b8b76 | 6244 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 6245 | *bytes_read = 12; |
613e1657 | 6246 | } |
dd373385 | 6247 | else if (length == 0) |
f7ef9339 | 6248 | { |
dd373385 | 6249 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 6250 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 6251 | *bytes_read = 8; |
f7ef9339 | 6252 | } |
613e1657 KB |
6253 | else |
6254 | { | |
6255 | *bytes_read = 4; | |
613e1657 KB |
6256 | } |
6257 | ||
dd373385 EZ |
6258 | if (cu_header) |
6259 | { | |
6260 | gdb_assert (cu_header->initial_length_size == 0 | |
6261 | || cu_header->initial_length_size == 4 | |
6262 | || cu_header->initial_length_size == 8 | |
6263 | || cu_header->initial_length_size == 12); | |
6264 | ||
6265 | if (cu_header->initial_length_size != 0 | |
6266 | && cu_header->initial_length_size != *bytes_read) | |
6267 | complaint (&symfile_complaints, | |
6268 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
6269 | ||
6270 | cu_header->initial_length_size = *bytes_read; | |
6271 | cu_header->offset_size = (*bytes_read == 4) ? 4 : 8; | |
6272 | } | |
6273 | ||
6274 | return length; | |
613e1657 KB |
6275 | } |
6276 | ||
6277 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 6278 | given by cu_header->offset_size. */ |
613e1657 KB |
6279 | |
6280 | static LONGEST | |
fe1b8b76 | 6281 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 6282 | unsigned int *bytes_read) |
613e1657 KB |
6283 | { |
6284 | LONGEST retval = 0; | |
6285 | ||
6286 | switch (cu_header->offset_size) | |
6287 | { | |
6288 | case 4: | |
fe1b8b76 | 6289 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
6290 | *bytes_read = 4; |
6291 | break; | |
6292 | case 8: | |
fe1b8b76 | 6293 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
6294 | *bytes_read = 8; |
6295 | break; | |
6296 | default: | |
8e65ff28 | 6297 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6298 | _("read_offset: bad switch [in module %s]"), |
659b0389 | 6299 | bfd_get_filename (abfd)); |
613e1657 KB |
6300 | } |
6301 | ||
917c78fc | 6302 | return retval; |
613e1657 KB |
6303 | } |
6304 | ||
fe1b8b76 JB |
6305 | static gdb_byte * |
6306 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
6307 | { |
6308 | /* If the size of a host char is 8 bits, we can return a pointer | |
6309 | to the buffer, otherwise we have to copy the data to a buffer | |
6310 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6311 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 6312 | return buf; |
c906108c SS |
6313 | } |
6314 | ||
6315 | static char * | |
fe1b8b76 | 6316 | read_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
6317 | { |
6318 | /* If the size of a host char is 8 bits, we can return a pointer | |
6319 | to the string, otherwise we have to copy the string to a buffer | |
6320 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6321 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
6322 | if (*buf == '\0') |
6323 | { | |
6324 | *bytes_read_ptr = 1; | |
6325 | return NULL; | |
6326 | } | |
fe1b8b76 JB |
6327 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
6328 | return (char *) buf; | |
4bdf3d34 JJ |
6329 | } |
6330 | ||
6331 | static char * | |
fe1b8b76 | 6332 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
6333 | const struct comp_unit_head *cu_header, |
6334 | unsigned int *bytes_read_ptr) | |
6335 | { | |
6336 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
891d2f0b | 6337 | bytes_read_ptr); |
c906108c | 6338 | |
6502dd73 | 6339 | if (dwarf2_per_objfile->str_buffer == NULL) |
c906108c | 6340 | { |
8a3fe4f8 | 6341 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 6342 | bfd_get_filename (abfd)); |
4bdf3d34 | 6343 | return NULL; |
c906108c | 6344 | } |
6502dd73 | 6345 | if (str_offset >= dwarf2_per_objfile->str_size) |
c906108c | 6346 | { |
8a3fe4f8 | 6347 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 6348 | bfd_get_filename (abfd)); |
c906108c SS |
6349 | return NULL; |
6350 | } | |
4bdf3d34 | 6351 | gdb_assert (HOST_CHAR_BIT == 8); |
6502dd73 | 6352 | if (dwarf2_per_objfile->str_buffer[str_offset] == '\0') |
4bdf3d34 | 6353 | return NULL; |
fe1b8b76 | 6354 | return (char *) (dwarf2_per_objfile->str_buffer + str_offset); |
c906108c SS |
6355 | } |
6356 | ||
ce5d95e1 | 6357 | static unsigned long |
fe1b8b76 | 6358 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6359 | { |
ce5d95e1 JB |
6360 | unsigned long result; |
6361 | unsigned int num_read; | |
c906108c SS |
6362 | int i, shift; |
6363 | unsigned char byte; | |
6364 | ||
6365 | result = 0; | |
6366 | shift = 0; | |
6367 | num_read = 0; | |
6368 | i = 0; | |
6369 | while (1) | |
6370 | { | |
fe1b8b76 | 6371 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6372 | buf++; |
6373 | num_read++; | |
ce5d95e1 | 6374 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
6375 | if ((byte & 128) == 0) |
6376 | { | |
6377 | break; | |
6378 | } | |
6379 | shift += 7; | |
6380 | } | |
6381 | *bytes_read_ptr = num_read; | |
6382 | return result; | |
6383 | } | |
6384 | ||
ce5d95e1 | 6385 | static long |
fe1b8b76 | 6386 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6387 | { |
ce5d95e1 | 6388 | long result; |
77e0b926 | 6389 | int i, shift, num_read; |
c906108c SS |
6390 | unsigned char byte; |
6391 | ||
6392 | result = 0; | |
6393 | shift = 0; | |
c906108c SS |
6394 | num_read = 0; |
6395 | i = 0; | |
6396 | while (1) | |
6397 | { | |
fe1b8b76 | 6398 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6399 | buf++; |
6400 | num_read++; | |
ce5d95e1 | 6401 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
6402 | shift += 7; |
6403 | if ((byte & 128) == 0) | |
6404 | { | |
6405 | break; | |
6406 | } | |
6407 | } | |
77e0b926 DJ |
6408 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
6409 | result |= -(((long)1) << shift); | |
c906108c SS |
6410 | *bytes_read_ptr = num_read; |
6411 | return result; | |
6412 | } | |
6413 | ||
4bb7a0a7 DJ |
6414 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
6415 | ||
fe1b8b76 JB |
6416 | static gdb_byte * |
6417 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
6418 | { |
6419 | int byte; | |
6420 | ||
6421 | while (1) | |
6422 | { | |
fe1b8b76 | 6423 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
6424 | buf++; |
6425 | if ((byte & 128) == 0) | |
6426 | return buf; | |
6427 | } | |
6428 | } | |
6429 | ||
c906108c | 6430 | static void |
e142c38c | 6431 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
6432 | { |
6433 | switch (lang) | |
6434 | { | |
6435 | case DW_LANG_C89: | |
6436 | case DW_LANG_C: | |
e142c38c | 6437 | cu->language = language_c; |
c906108c SS |
6438 | break; |
6439 | case DW_LANG_C_plus_plus: | |
e142c38c | 6440 | cu->language = language_cplus; |
c906108c SS |
6441 | break; |
6442 | case DW_LANG_Fortran77: | |
6443 | case DW_LANG_Fortran90: | |
b21b22e0 | 6444 | case DW_LANG_Fortran95: |
e142c38c | 6445 | cu->language = language_fortran; |
c906108c SS |
6446 | break; |
6447 | case DW_LANG_Mips_Assembler: | |
e142c38c | 6448 | cu->language = language_asm; |
c906108c | 6449 | break; |
bebd888e | 6450 | case DW_LANG_Java: |
e142c38c | 6451 | cu->language = language_java; |
bebd888e | 6452 | break; |
c906108c | 6453 | case DW_LANG_Ada83: |
8aaf0b47 | 6454 | case DW_LANG_Ada95: |
bc5f45f8 JB |
6455 | cu->language = language_ada; |
6456 | break; | |
72019c9c GM |
6457 | case DW_LANG_Modula2: |
6458 | cu->language = language_m2; | |
6459 | break; | |
fe8e67fd PM |
6460 | case DW_LANG_Pascal83: |
6461 | cu->language = language_pascal; | |
6462 | break; | |
c906108c SS |
6463 | case DW_LANG_Cobol74: |
6464 | case DW_LANG_Cobol85: | |
c906108c | 6465 | default: |
e142c38c | 6466 | cu->language = language_minimal; |
c906108c SS |
6467 | break; |
6468 | } | |
e142c38c | 6469 | cu->language_defn = language_def (cu->language); |
c906108c SS |
6470 | } |
6471 | ||
6472 | /* Return the named attribute or NULL if not there. */ | |
6473 | ||
6474 | static struct attribute * | |
e142c38c | 6475 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
6476 | { |
6477 | unsigned int i; | |
6478 | struct attribute *spec = NULL; | |
6479 | ||
6480 | for (i = 0; i < die->num_attrs; ++i) | |
6481 | { | |
6482 | if (die->attrs[i].name == name) | |
10b3939b | 6483 | return &die->attrs[i]; |
c906108c SS |
6484 | if (die->attrs[i].name == DW_AT_specification |
6485 | || die->attrs[i].name == DW_AT_abstract_origin) | |
6486 | spec = &die->attrs[i]; | |
6487 | } | |
c906108c | 6488 | |
10b3939b DJ |
6489 | if (spec) |
6490 | return dwarf2_attr (follow_die_ref (die, spec, cu), name, cu); | |
c5aa993b | 6491 | |
c906108c SS |
6492 | return NULL; |
6493 | } | |
6494 | ||
05cf31d1 JB |
6495 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
6496 | and holds a non-zero value. This function should only be used for | |
6497 | DW_FORM_flag attributes. */ | |
6498 | ||
6499 | static int | |
6500 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
6501 | { | |
6502 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
6503 | ||
6504 | return (attr && DW_UNSND (attr)); | |
6505 | } | |
6506 | ||
3ca72b44 | 6507 | static int |
e142c38c | 6508 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 6509 | { |
05cf31d1 JB |
6510 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
6511 | which value is non-zero. However, we have to be careful with | |
6512 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
6513 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
6514 | end up accidently finding a declaration attribute that belongs | |
6515 | to a different DIE referenced by the specification attribute, | |
6516 | even though the given DIE does not have a declaration attribute. */ | |
6517 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
6518 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
6519 | } |
6520 | ||
63d06c5c DC |
6521 | /* Return the die giving the specification for DIE, if there is |
6522 | one. */ | |
6523 | ||
6524 | static struct die_info * | |
e142c38c | 6525 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 6526 | { |
e142c38c | 6527 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
6528 | |
6529 | if (spec_attr == NULL) | |
6530 | return NULL; | |
6531 | else | |
10b3939b | 6532 | return follow_die_ref (die, spec_attr, cu); |
63d06c5c | 6533 | } |
c906108c | 6534 | |
debd256d JB |
6535 | /* Free the line_header structure *LH, and any arrays and strings it |
6536 | refers to. */ | |
6537 | static void | |
6538 | free_line_header (struct line_header *lh) | |
6539 | { | |
6540 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 6541 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
6542 | |
6543 | /* Remember that all the lh->file_names[i].name pointers are | |
6544 | pointers into debug_line_buffer, and don't need to be freed. */ | |
6545 | if (lh->file_names) | |
a8bc7b56 | 6546 | xfree (lh->file_names); |
debd256d JB |
6547 | |
6548 | /* Similarly for the include directory names. */ | |
6549 | if (lh->include_dirs) | |
a8bc7b56 | 6550 | xfree (lh->include_dirs); |
debd256d | 6551 | |
a8bc7b56 | 6552 | xfree (lh); |
debd256d JB |
6553 | } |
6554 | ||
6555 | ||
6556 | /* Add an entry to LH's include directory table. */ | |
6557 | static void | |
6558 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 6559 | { |
debd256d JB |
6560 | /* Grow the array if necessary. */ |
6561 | if (lh->include_dirs_size == 0) | |
c5aa993b | 6562 | { |
debd256d JB |
6563 | lh->include_dirs_size = 1; /* for testing */ |
6564 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
6565 | * sizeof (*lh->include_dirs)); | |
6566 | } | |
6567 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
6568 | { | |
6569 | lh->include_dirs_size *= 2; | |
6570 | lh->include_dirs = xrealloc (lh->include_dirs, | |
6571 | (lh->include_dirs_size | |
6572 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 6573 | } |
c906108c | 6574 | |
debd256d JB |
6575 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
6576 | } | |
6577 | ||
6578 | ||
6579 | /* Add an entry to LH's file name table. */ | |
6580 | static void | |
6581 | add_file_name (struct line_header *lh, | |
6582 | char *name, | |
6583 | unsigned int dir_index, | |
6584 | unsigned int mod_time, | |
6585 | unsigned int length) | |
6586 | { | |
6587 | struct file_entry *fe; | |
6588 | ||
6589 | /* Grow the array if necessary. */ | |
6590 | if (lh->file_names_size == 0) | |
6591 | { | |
6592 | lh->file_names_size = 1; /* for testing */ | |
6593 | lh->file_names = xmalloc (lh->file_names_size | |
6594 | * sizeof (*lh->file_names)); | |
6595 | } | |
6596 | else if (lh->num_file_names >= lh->file_names_size) | |
6597 | { | |
6598 | lh->file_names_size *= 2; | |
6599 | lh->file_names = xrealloc (lh->file_names, | |
6600 | (lh->file_names_size | |
6601 | * sizeof (*lh->file_names))); | |
6602 | } | |
6603 | ||
6604 | fe = &lh->file_names[lh->num_file_names++]; | |
6605 | fe->name = name; | |
6606 | fe->dir_index = dir_index; | |
6607 | fe->mod_time = mod_time; | |
6608 | fe->length = length; | |
aaa75496 | 6609 | fe->included_p = 0; |
cb1df416 | 6610 | fe->symtab = NULL; |
debd256d JB |
6611 | } |
6612 | ||
6613 | ||
6614 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
6615 | .debug_line, according to the endianness of ABFD. Return a pointer |
6616 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
6617 | |
6618 | NOTE: the strings in the include directory and file name tables of | |
6619 | the returned object point into debug_line_buffer, and must not be | |
6620 | freed. */ | |
6621 | static struct line_header * | |
6622 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 6623 | struct dwarf2_cu *cu) |
debd256d JB |
6624 | { |
6625 | struct cleanup *back_to; | |
6626 | struct line_header *lh; | |
fe1b8b76 | 6627 | gdb_byte *line_ptr; |
891d2f0b | 6628 | unsigned int bytes_read; |
debd256d JB |
6629 | int i; |
6630 | char *cur_dir, *cur_file; | |
6631 | ||
6502dd73 | 6632 | if (dwarf2_per_objfile->line_buffer == NULL) |
debd256d | 6633 | { |
e2e0b3e5 | 6634 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
6635 | return 0; |
6636 | } | |
6637 | ||
a738430d MK |
6638 | /* Make sure that at least there's room for the total_length field. |
6639 | That could be 12 bytes long, but we're just going to fudge that. */ | |
6502dd73 | 6640 | if (offset + 4 >= dwarf2_per_objfile->line_size) |
debd256d | 6641 | { |
4d3c2250 | 6642 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6643 | return 0; |
6644 | } | |
6645 | ||
6646 | lh = xmalloc (sizeof (*lh)); | |
6647 | memset (lh, 0, sizeof (*lh)); | |
6648 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
6649 | (void *) lh); | |
6650 | ||
6502dd73 | 6651 | line_ptr = dwarf2_per_objfile->line_buffer + offset; |
debd256d | 6652 | |
a738430d | 6653 | /* Read in the header. */ |
dd373385 EZ |
6654 | lh->total_length = |
6655 | read_initial_length (abfd, line_ptr, &cu->header, &bytes_read); | |
debd256d | 6656 | line_ptr += bytes_read; |
6502dd73 DJ |
6657 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line_buffer |
6658 | + dwarf2_per_objfile->line_size)) | |
debd256d | 6659 | { |
4d3c2250 | 6660 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6661 | return 0; |
6662 | } | |
6663 | lh->statement_program_end = line_ptr + lh->total_length; | |
6664 | lh->version = read_2_bytes (abfd, line_ptr); | |
6665 | line_ptr += 2; | |
e7c27a73 | 6666 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
6667 | line_ptr += bytes_read; |
6668 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
6669 | line_ptr += 1; | |
6670 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
6671 | line_ptr += 1; | |
6672 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
6673 | line_ptr += 1; | |
6674 | lh->line_range = read_1_byte (abfd, line_ptr); | |
6675 | line_ptr += 1; | |
6676 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
6677 | line_ptr += 1; | |
6678 | lh->standard_opcode_lengths | |
fe1b8b76 | 6679 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
6680 | |
6681 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
6682 | for (i = 1; i < lh->opcode_base; ++i) | |
6683 | { | |
6684 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
6685 | line_ptr += 1; | |
6686 | } | |
6687 | ||
a738430d | 6688 | /* Read directory table. */ |
debd256d JB |
6689 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6690 | { | |
6691 | line_ptr += bytes_read; | |
6692 | add_include_dir (lh, cur_dir); | |
6693 | } | |
6694 | line_ptr += bytes_read; | |
6695 | ||
a738430d | 6696 | /* Read file name table. */ |
debd256d JB |
6697 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6698 | { | |
6699 | unsigned int dir_index, mod_time, length; | |
6700 | ||
6701 | line_ptr += bytes_read; | |
6702 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6703 | line_ptr += bytes_read; | |
6704 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6705 | line_ptr += bytes_read; | |
6706 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6707 | line_ptr += bytes_read; | |
6708 | ||
6709 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6710 | } | |
6711 | line_ptr += bytes_read; | |
6712 | lh->statement_program_start = line_ptr; | |
6713 | ||
6502dd73 DJ |
6714 | if (line_ptr > (dwarf2_per_objfile->line_buffer |
6715 | + dwarf2_per_objfile->line_size)) | |
4d3c2250 | 6716 | complaint (&symfile_complaints, |
e2e0b3e5 | 6717 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
6718 | |
6719 | discard_cleanups (back_to); | |
6720 | return lh; | |
6721 | } | |
c906108c | 6722 | |
5fb290d7 DJ |
6723 | /* This function exists to work around a bug in certain compilers |
6724 | (particularly GCC 2.95), in which the first line number marker of a | |
6725 | function does not show up until after the prologue, right before | |
6726 | the second line number marker. This function shifts ADDRESS down | |
6727 | to the beginning of the function if necessary, and is called on | |
6728 | addresses passed to record_line. */ | |
6729 | ||
6730 | static CORE_ADDR | |
e142c38c | 6731 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
6732 | { |
6733 | struct function_range *fn; | |
6734 | ||
6735 | /* Find the function_range containing address. */ | |
e142c38c | 6736 | if (!cu->first_fn) |
5fb290d7 DJ |
6737 | return address; |
6738 | ||
e142c38c DJ |
6739 | if (!cu->cached_fn) |
6740 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 6741 | |
e142c38c | 6742 | fn = cu->cached_fn; |
5fb290d7 DJ |
6743 | while (fn) |
6744 | if (fn->lowpc <= address && fn->highpc > address) | |
6745 | goto found; | |
6746 | else | |
6747 | fn = fn->next; | |
6748 | ||
e142c38c DJ |
6749 | fn = cu->first_fn; |
6750 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
6751 | if (fn->lowpc <= address && fn->highpc > address) |
6752 | goto found; | |
6753 | else | |
6754 | fn = fn->next; | |
6755 | ||
6756 | return address; | |
6757 | ||
6758 | found: | |
6759 | if (fn->seen_line) | |
6760 | return address; | |
6761 | if (address != fn->lowpc) | |
4d3c2250 | 6762 | complaint (&symfile_complaints, |
e2e0b3e5 | 6763 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 6764 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
6765 | fn->seen_line = 1; |
6766 | return fn->lowpc; | |
6767 | } | |
6768 | ||
aaa75496 JB |
6769 | /* Decode the Line Number Program (LNP) for the given line_header |
6770 | structure and CU. The actual information extracted and the type | |
6771 | of structures created from the LNP depends on the value of PST. | |
6772 | ||
6773 | 1. If PST is NULL, then this procedure uses the data from the program | |
6774 | to create all necessary symbol tables, and their linetables. | |
6775 | The compilation directory of the file is passed in COMP_DIR, | |
6776 | and must not be NULL. | |
6777 | ||
6778 | 2. If PST is not NULL, this procedure reads the program to determine | |
6779 | the list of files included by the unit represented by PST, and | |
6780 | builds all the associated partial symbol tables. In this case, | |
6781 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
6782 | is not used to compute the full name of the symtab, and therefore | |
6783 | omitting it when building the partial symtab does not introduce | |
6784 | the potential for inconsistency - a partial symtab and its associated | |
6785 | symbtab having a different fullname -). */ | |
debd256d | 6786 | |
c906108c | 6787 | static void |
debd256d | 6788 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 6789 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 6790 | { |
a8c50c1f | 6791 | gdb_byte *line_ptr, *extended_end; |
fe1b8b76 | 6792 | gdb_byte *line_end; |
a8c50c1f | 6793 | unsigned int bytes_read, extended_len; |
c906108c | 6794 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
6795 | CORE_ADDR baseaddr; |
6796 | struct objfile *objfile = cu->objfile; | |
aaa75496 | 6797 | const int decode_for_pst_p = (pst != NULL); |
cb1df416 | 6798 | struct subfile *last_subfile = NULL, *first_subfile = current_subfile; |
e142c38c DJ |
6799 | |
6800 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6801 | |
debd256d JB |
6802 | line_ptr = lh->statement_program_start; |
6803 | line_end = lh->statement_program_end; | |
c906108c SS |
6804 | |
6805 | /* Read the statement sequences until there's nothing left. */ | |
6806 | while (line_ptr < line_end) | |
6807 | { | |
6808 | /* state machine registers */ | |
6809 | CORE_ADDR address = 0; | |
6810 | unsigned int file = 1; | |
6811 | unsigned int line = 1; | |
6812 | unsigned int column = 0; | |
debd256d | 6813 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
6814 | int basic_block = 0; |
6815 | int end_sequence = 0; | |
6816 | ||
aaa75496 | 6817 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 6818 | { |
aaa75496 | 6819 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
6820 | /* lh->include_dirs and lh->file_names are 0-based, but the |
6821 | directory and file name numbers in the statement program | |
6822 | are 1-based. */ | |
6823 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 6824 | char *dir = NULL; |
a738430d | 6825 | |
debd256d JB |
6826 | if (fe->dir_index) |
6827 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
6828 | |
6829 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
6830 | } |
6831 | ||
a738430d | 6832 | /* Decode the table. */ |
c5aa993b | 6833 | while (!end_sequence) |
c906108c SS |
6834 | { |
6835 | op_code = read_1_byte (abfd, line_ptr); | |
6836 | line_ptr += 1; | |
9aa1fe7e | 6837 | |
debd256d | 6838 | if (op_code >= lh->opcode_base) |
a738430d MK |
6839 | { |
6840 | /* Special operand. */ | |
debd256d JB |
6841 | adj_opcode = op_code - lh->opcode_base; |
6842 | address += (adj_opcode / lh->line_range) | |
6843 | * lh->minimum_instruction_length; | |
6844 | line += lh->line_base + (adj_opcode % lh->line_range); | |
25e43795 DJ |
6845 | if (lh->num_file_names < file) |
6846 | dwarf2_debug_line_missing_file_complaint (); | |
6847 | else | |
6848 | { | |
6849 | lh->file_names[file - 1].included_p = 1; | |
6850 | if (!decode_for_pst_p) | |
6851 | { | |
6852 | if (last_subfile != current_subfile) | |
6853 | { | |
6854 | if (last_subfile) | |
6855 | record_line (last_subfile, 0, address); | |
6856 | last_subfile = current_subfile; | |
6857 | } | |
6858 | /* Append row to matrix using current values. */ | |
6859 | record_line (current_subfile, line, | |
6860 | check_cu_functions (address, cu)); | |
366da635 | 6861 | } |
25e43795 | 6862 | } |
9aa1fe7e GK |
6863 | basic_block = 1; |
6864 | } | |
6865 | else switch (op_code) | |
c906108c SS |
6866 | { |
6867 | case DW_LNS_extended_op: | |
a8c50c1f | 6868 | extended_len = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
473b7be6 | 6869 | line_ptr += bytes_read; |
a8c50c1f | 6870 | extended_end = line_ptr + extended_len; |
c906108c SS |
6871 | extended_op = read_1_byte (abfd, line_ptr); |
6872 | line_ptr += 1; | |
6873 | switch (extended_op) | |
6874 | { | |
6875 | case DW_LNE_end_sequence: | |
6876 | end_sequence = 1; | |
25e43795 DJ |
6877 | |
6878 | if (lh->num_file_names < file) | |
6879 | dwarf2_debug_line_missing_file_complaint (); | |
6880 | else | |
6881 | { | |
6882 | lh->file_names[file - 1].included_p = 1; | |
6883 | if (!decode_for_pst_p) | |
6884 | record_line (current_subfile, 0, address); | |
6885 | } | |
c906108c SS |
6886 | break; |
6887 | case DW_LNE_set_address: | |
e7c27a73 | 6888 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
6889 | line_ptr += bytes_read; |
6890 | address += baseaddr; | |
c906108c SS |
6891 | break; |
6892 | case DW_LNE_define_file: | |
debd256d JB |
6893 | { |
6894 | char *cur_file; | |
6895 | unsigned int dir_index, mod_time, length; | |
6896 | ||
6897 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
6898 | line_ptr += bytes_read; | |
6899 | dir_index = | |
6900 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6901 | line_ptr += bytes_read; | |
6902 | mod_time = | |
6903 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6904 | line_ptr += bytes_read; | |
6905 | length = | |
6906 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6907 | line_ptr += bytes_read; | |
6908 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6909 | } | |
c906108c SS |
6910 | break; |
6911 | default: | |
4d3c2250 | 6912 | complaint (&symfile_complaints, |
e2e0b3e5 | 6913 | _("mangled .debug_line section")); |
debd256d | 6914 | return; |
c906108c | 6915 | } |
a8c50c1f DJ |
6916 | /* Make sure that we parsed the extended op correctly. If e.g. |
6917 | we expected a different address size than the producer used, | |
6918 | we may have read the wrong number of bytes. */ | |
6919 | if (line_ptr != extended_end) | |
6920 | { | |
6921 | complaint (&symfile_complaints, | |
6922 | _("mangled .debug_line section")); | |
6923 | return; | |
6924 | } | |
c906108c SS |
6925 | break; |
6926 | case DW_LNS_copy: | |
25e43795 DJ |
6927 | if (lh->num_file_names < file) |
6928 | dwarf2_debug_line_missing_file_complaint (); | |
6929 | else | |
366da635 | 6930 | { |
25e43795 DJ |
6931 | lh->file_names[file - 1].included_p = 1; |
6932 | if (!decode_for_pst_p) | |
6933 | { | |
6934 | if (last_subfile != current_subfile) | |
6935 | { | |
6936 | if (last_subfile) | |
6937 | record_line (last_subfile, 0, address); | |
6938 | last_subfile = current_subfile; | |
6939 | } | |
6940 | record_line (current_subfile, line, | |
6941 | check_cu_functions (address, cu)); | |
6942 | } | |
366da635 | 6943 | } |
c906108c SS |
6944 | basic_block = 0; |
6945 | break; | |
6946 | case DW_LNS_advance_pc: | |
debd256d | 6947 | address += lh->minimum_instruction_length |
c906108c SS |
6948 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6949 | line_ptr += bytes_read; | |
6950 | break; | |
6951 | case DW_LNS_advance_line: | |
6952 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
6953 | line_ptr += bytes_read; | |
6954 | break; | |
6955 | case DW_LNS_set_file: | |
debd256d | 6956 | { |
a738430d MK |
6957 | /* The arrays lh->include_dirs and lh->file_names are |
6958 | 0-based, but the directory and file name numbers in | |
6959 | the statement program are 1-based. */ | |
debd256d | 6960 | struct file_entry *fe; |
4f1520fb | 6961 | char *dir = NULL; |
a738430d | 6962 | |
debd256d JB |
6963 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6964 | line_ptr += bytes_read; | |
25e43795 DJ |
6965 | if (lh->num_file_names < file) |
6966 | dwarf2_debug_line_missing_file_complaint (); | |
6967 | else | |
6968 | { | |
6969 | fe = &lh->file_names[file - 1]; | |
6970 | if (fe->dir_index) | |
6971 | dir = lh->include_dirs[fe->dir_index - 1]; | |
6972 | if (!decode_for_pst_p) | |
6973 | { | |
6974 | last_subfile = current_subfile; | |
6975 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
6976 | } | |
6977 | } | |
debd256d | 6978 | } |
c906108c SS |
6979 | break; |
6980 | case DW_LNS_set_column: | |
6981 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6982 | line_ptr += bytes_read; | |
6983 | break; | |
6984 | case DW_LNS_negate_stmt: | |
6985 | is_stmt = (!is_stmt); | |
6986 | break; | |
6987 | case DW_LNS_set_basic_block: | |
6988 | basic_block = 1; | |
6989 | break; | |
c2c6d25f JM |
6990 | /* Add to the address register of the state machine the |
6991 | address increment value corresponding to special opcode | |
a738430d MK |
6992 | 255. I.e., this value is scaled by the minimum |
6993 | instruction length since special opcode 255 would have | |
6994 | scaled the the increment. */ | |
c906108c | 6995 | case DW_LNS_const_add_pc: |
debd256d JB |
6996 | address += (lh->minimum_instruction_length |
6997 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
6998 | break; |
6999 | case DW_LNS_fixed_advance_pc: | |
7000 | address += read_2_bytes (abfd, line_ptr); | |
7001 | line_ptr += 2; | |
7002 | break; | |
9aa1fe7e | 7003 | default: |
a738430d MK |
7004 | { |
7005 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 7006 | int i; |
a738430d | 7007 | |
debd256d | 7008 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
7009 | { |
7010 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
7011 | line_ptr += bytes_read; | |
7012 | } | |
7013 | } | |
c906108c SS |
7014 | } |
7015 | } | |
7016 | } | |
aaa75496 JB |
7017 | |
7018 | if (decode_for_pst_p) | |
7019 | { | |
7020 | int file_index; | |
7021 | ||
7022 | /* Now that we're done scanning the Line Header Program, we can | |
7023 | create the psymtab of each included file. */ | |
7024 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
7025 | if (lh->file_names[file_index].included_p == 1) | |
7026 | { | |
5b5464ad JB |
7027 | const struct file_entry fe = lh->file_names [file_index]; |
7028 | char *include_name = fe.name; | |
7029 | char *dir_name = NULL; | |
7030 | char *pst_filename = pst->filename; | |
7031 | ||
7032 | if (fe.dir_index) | |
7033 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
7034 | ||
7035 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
7036 | { | |
1754f103 MK |
7037 | include_name = concat (dir_name, SLASH_STRING, |
7038 | include_name, (char *)NULL); | |
5b5464ad JB |
7039 | make_cleanup (xfree, include_name); |
7040 | } | |
7041 | ||
7042 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
7043 | { | |
1754f103 MK |
7044 | pst_filename = concat (pst->dirname, SLASH_STRING, |
7045 | pst_filename, (char *)NULL); | |
5b5464ad JB |
7046 | make_cleanup (xfree, pst_filename); |
7047 | } | |
7048 | ||
7049 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
7050 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
7051 | } | |
7052 | } | |
cb1df416 DJ |
7053 | else |
7054 | { | |
7055 | /* Make sure a symtab is created for every file, even files | |
7056 | which contain only variables (i.e. no code with associated | |
7057 | line numbers). */ | |
7058 | ||
7059 | int i; | |
7060 | struct file_entry *fe; | |
7061 | ||
7062 | for (i = 0; i < lh->num_file_names; i++) | |
7063 | { | |
7064 | char *dir = NULL; | |
7065 | fe = &lh->file_names[i]; | |
7066 | if (fe->dir_index) | |
7067 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7068 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
7069 | ||
7070 | /* Skip the main file; we don't need it, and it must be | |
7071 | allocated last, so that it will show up before the | |
7072 | non-primary symtabs in the objfile's symtab list. */ | |
7073 | if (current_subfile == first_subfile) | |
7074 | continue; | |
7075 | ||
7076 | if (current_subfile->symtab == NULL) | |
7077 | current_subfile->symtab = allocate_symtab (current_subfile->name, | |
7078 | cu->objfile); | |
7079 | fe->symtab = current_subfile->symtab; | |
7080 | } | |
7081 | } | |
c906108c SS |
7082 | } |
7083 | ||
7084 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
7085 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
7086 | or NULL if not known. COMP_DIR is the compilation directory for the |
7087 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
7088 | This routine tries to keep line numbers from identical absolute and |
7089 | relative file names in a common subfile. | |
7090 | ||
7091 | Using the `list' example from the GDB testsuite, which resides in | |
7092 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
7093 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
7094 | ||
c5aa993b JM |
7095 | DW_AT_name: /srcdir/list0.c |
7096 | DW_AT_comp_dir: /compdir | |
357e46e7 | 7097 | files.files[0].name: list0.h |
c5aa993b | 7098 | files.files[0].dir: /srcdir |
357e46e7 | 7099 | files.files[1].name: list0.c |
c5aa993b | 7100 | files.files[1].dir: /srcdir |
c906108c SS |
7101 | |
7102 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
7103 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
7104 | start_subfile will ensure that this happens provided that we pass the | |
7105 | concatenation of files.files[1].dir and files.files[1].name as the | |
7106 | subfile's name. */ | |
c906108c SS |
7107 | |
7108 | static void | |
4f1520fb | 7109 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 7110 | { |
4f1520fb FR |
7111 | char *fullname; |
7112 | ||
7113 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
7114 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
7115 | second argument to start_subfile. To be consistent, we do the | |
7116 | same here. In order not to lose the line information directory, | |
7117 | we concatenate it to the filename when it makes sense. | |
7118 | Note that the Dwarf3 standard says (speaking of filenames in line | |
7119 | information): ``The directory index is ignored for file names | |
7120 | that represent full path names''. Thus ignoring dirname in the | |
7121 | `else' branch below isn't an issue. */ | |
c906108c | 7122 | |
d5166ae1 | 7123 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
7124 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
7125 | else | |
7126 | fullname = filename; | |
c906108c | 7127 | |
4f1520fb FR |
7128 | start_subfile (fullname, comp_dir); |
7129 | ||
7130 | if (fullname != filename) | |
7131 | xfree (fullname); | |
c906108c SS |
7132 | } |
7133 | ||
4c2df51b DJ |
7134 | static void |
7135 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 7136 | struct dwarf2_cu *cu) |
4c2df51b | 7137 | { |
e7c27a73 DJ |
7138 | struct objfile *objfile = cu->objfile; |
7139 | struct comp_unit_head *cu_header = &cu->header; | |
7140 | ||
4c2df51b DJ |
7141 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
7142 | code here to turn a symbol with DW_AT_external and a | |
7143 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
7144 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
7145 | with some versions of binutils) where shared libraries could have | |
7146 | relocations against symbols in their debug information - the | |
7147 | minimal symbol would have the right address, but the debug info | |
7148 | would not. It's no longer necessary, because we will explicitly | |
7149 | apply relocations when we read in the debug information now. */ | |
7150 | ||
7151 | /* A DW_AT_location attribute with no contents indicates that a | |
7152 | variable has been optimized away. */ | |
7153 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
7154 | { | |
7155 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
7156 | return; | |
7157 | } | |
7158 | ||
7159 | /* Handle one degenerate form of location expression specially, to | |
7160 | preserve GDB's previous behavior when section offsets are | |
7161 | specified. If this is just a DW_OP_addr then mark this symbol | |
7162 | as LOC_STATIC. */ | |
7163 | ||
7164 | if (attr_form_is_block (attr) | |
7165 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
7166 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
7167 | { | |
891d2f0b | 7168 | unsigned int dummy; |
4c2df51b DJ |
7169 | |
7170 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 7171 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
7172 | fixup_symbol_section (sym, objfile); |
7173 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
7174 | SYMBOL_SECTION (sym)); | |
7175 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
7176 | return; | |
7177 | } | |
7178 | ||
7179 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
7180 | expression evaluator, and use LOC_COMPUTED only when necessary | |
7181 | (i.e. when the value of a register or memory location is | |
7182 | referenced, or a thread-local block, etc.). Then again, it might | |
7183 | not be worthwhile. I'm assuming that it isn't unless performance | |
7184 | or memory numbers show me otherwise. */ | |
7185 | ||
e7c27a73 | 7186 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
7187 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
7188 | } | |
7189 | ||
c906108c SS |
7190 | /* Given a pointer to a DWARF information entry, figure out if we need |
7191 | to make a symbol table entry for it, and if so, create a new entry | |
7192 | and return a pointer to it. | |
7193 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 7194 | used the passed type. */ |
c906108c SS |
7195 | |
7196 | static struct symbol * | |
e7c27a73 | 7197 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 7198 | { |
e7c27a73 | 7199 | struct objfile *objfile = cu->objfile; |
c906108c SS |
7200 | struct symbol *sym = NULL; |
7201 | char *name; | |
7202 | struct attribute *attr = NULL; | |
7203 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
7204 | CORE_ADDR baseaddr; |
7205 | ||
7206 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 7207 | |
5c4e30ca | 7208 | if (die->tag != DW_TAG_namespace) |
e142c38c | 7209 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
7210 | else |
7211 | name = TYPE_NAME (type); | |
7212 | ||
c906108c SS |
7213 | if (name) |
7214 | { | |
4a146b47 | 7215 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
7216 | sizeof (struct symbol)); |
7217 | OBJSTAT (objfile, n_syms++); | |
7218 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
7219 | |
7220 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 7221 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 7222 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
7223 | |
7224 | /* Default assumptions. | |
c5aa993b | 7225 | Use the passed type or decode it from the die. */ |
176620f1 | 7226 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 7227 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
7228 | if (type != NULL) |
7229 | SYMBOL_TYPE (sym) = type; | |
7230 | else | |
e7c27a73 | 7231 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 7232 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
7233 | if (attr) |
7234 | { | |
7235 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
7236 | } | |
cb1df416 DJ |
7237 | |
7238 | attr = dwarf2_attr (die, DW_AT_decl_file, cu); | |
7239 | if (attr) | |
7240 | { | |
7241 | int file_index = DW_UNSND (attr); | |
7242 | if (cu->line_header == NULL | |
7243 | || file_index > cu->line_header->num_file_names) | |
7244 | complaint (&symfile_complaints, | |
7245 | _("file index out of range")); | |
1c3d648d | 7246 | else if (file_index > 0) |
cb1df416 DJ |
7247 | { |
7248 | struct file_entry *fe; | |
7249 | fe = &cu->line_header->file_names[file_index - 1]; | |
7250 | SYMBOL_SYMTAB (sym) = fe->symtab; | |
7251 | } | |
7252 | } | |
7253 | ||
c906108c SS |
7254 | switch (die->tag) |
7255 | { | |
7256 | case DW_TAG_label: | |
e142c38c | 7257 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
7258 | if (attr) |
7259 | { | |
7260 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
7261 | } | |
7262 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
7263 | break; | |
7264 | case DW_TAG_subprogram: | |
7265 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
7266 | finish_block. */ | |
7267 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 7268 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
7269 | if (attr2 && (DW_UNSND (attr2) != 0)) |
7270 | { | |
7271 | add_symbol_to_list (sym, &global_symbols); | |
7272 | } | |
7273 | else | |
7274 | { | |
e142c38c | 7275 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7276 | } |
7277 | break; | |
7278 | case DW_TAG_variable: | |
7279 | /* Compilation with minimal debug info may result in variables | |
7280 | with missing type entries. Change the misleading `void' type | |
7281 | to something sensible. */ | |
7282 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
64c50499 UW |
7283 | SYMBOL_TYPE (sym) |
7284 | = builtin_type (current_gdbarch)->nodebug_data_symbol; | |
7285 | ||
e142c38c | 7286 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7287 | if (attr) |
7288 | { | |
e7c27a73 | 7289 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 7290 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
7291 | if (attr2 && (DW_UNSND (attr2) != 0)) |
7292 | add_symbol_to_list (sym, &global_symbols); | |
7293 | else | |
e142c38c | 7294 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7295 | break; |
7296 | } | |
e142c38c | 7297 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7298 | if (attr) |
7299 | { | |
e7c27a73 | 7300 | var_decode_location (attr, sym, cu); |
e142c38c | 7301 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7302 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 7303 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 7304 | else |
e142c38c | 7305 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7306 | } |
7307 | else | |
7308 | { | |
7309 | /* We do not know the address of this symbol. | |
c5aa993b JM |
7310 | If it is an external symbol and we have type information |
7311 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
7312 | The address of the variable will then be determined from | |
7313 | the minimal symbol table whenever the variable is | |
7314 | referenced. */ | |
e142c38c | 7315 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7316 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 7317 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
7318 | { |
7319 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
7320 | add_symbol_to_list (sym, &global_symbols); | |
7321 | } | |
7322 | } | |
7323 | break; | |
7324 | case DW_TAG_formal_parameter: | |
e142c38c | 7325 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7326 | if (attr) |
7327 | { | |
e7c27a73 | 7328 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
7329 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
7330 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
7331 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 7332 | } |
e142c38c | 7333 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7334 | if (attr) |
7335 | { | |
e7c27a73 | 7336 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7337 | } |
e142c38c | 7338 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7339 | break; |
7340 | case DW_TAG_unspecified_parameters: | |
7341 | /* From varargs functions; gdb doesn't seem to have any | |
7342 | interest in this information, so just ignore it for now. | |
7343 | (FIXME?) */ | |
7344 | break; | |
7345 | case DW_TAG_class_type: | |
7346 | case DW_TAG_structure_type: | |
7347 | case DW_TAG_union_type: | |
72019c9c | 7348 | case DW_TAG_set_type: |
c906108c SS |
7349 | case DW_TAG_enumeration_type: |
7350 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 7351 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 7352 | |
63d06c5c DC |
7353 | /* Make sure that the symbol includes appropriate enclosing |
7354 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 7355 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
7356 | the type. */ |
7357 | ||
987504bb JJ |
7358 | if (cu->language == language_cplus |
7359 | || cu->language == language_java) | |
c906108c | 7360 | { |
63d06c5c DC |
7361 | struct type *type = SYMBOL_TYPE (sym); |
7362 | ||
7363 | if (TYPE_TAG_NAME (type) != NULL) | |
7364 | { | |
7365 | /* FIXME: carlton/2003-11-10: Should this use | |
7366 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
7367 | arises further down in this function.) */ |
7368 | /* The type's name is already allocated along with | |
7369 | this objfile, so we don't need to duplicate it | |
7370 | for the symbol. */ | |
7371 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 7372 | } |
c906108c | 7373 | } |
63d06c5c DC |
7374 | |
7375 | { | |
987504bb | 7376 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
7377 | really ever be static objects: otherwise, if you try |
7378 | to, say, break of a class's method and you're in a file | |
7379 | which doesn't mention that class, it won't work unless | |
7380 | the check for all static symbols in lookup_symbol_aux | |
7381 | saves you. See the OtherFileClass tests in | |
7382 | gdb.c++/namespace.exp. */ | |
7383 | ||
7384 | struct pending **list_to_add; | |
7385 | ||
e142c38c | 7386 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7387 | && (cu->language == language_cplus |
7388 | || cu->language == language_java) | |
e142c38c | 7389 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7390 | |
7391 | add_symbol_to_list (sym, list_to_add); | |
7392 | ||
7393 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb JJ |
7394 | defines a typedef for "foo". A Java class declaration also |
7395 | defines a typedef for the class. Synthesize a typedef symbol | |
7396 | so that "ptype foo" works as expected. */ | |
7397 | if (cu->language == language_cplus | |
8c6860bb JB |
7398 | || cu->language == language_java |
7399 | || cu->language == language_ada) | |
63d06c5c DC |
7400 | { |
7401 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 7402 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
7403 | sizeof (struct symbol)); |
7404 | *typedef_sym = *sym; | |
7405 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
d8151005 DJ |
7406 | /* The symbol's name is already allocated along with |
7407 | this objfile, so we don't need to duplicate it for | |
7408 | the type. */ | |
63d06c5c | 7409 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 7410 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
7411 | add_symbol_to_list (typedef_sym, list_to_add); |
7412 | } | |
7413 | } | |
c906108c SS |
7414 | break; |
7415 | case DW_TAG_typedef: | |
63d06c5c DC |
7416 | if (processing_has_namespace_info |
7417 | && processing_current_prefix[0] != '\0') | |
7418 | { | |
987504bb JJ |
7419 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7420 | processing_current_prefix, | |
7421 | name, cu); | |
63d06c5c DC |
7422 | } |
7423 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7424 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 7425 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 7426 | break; |
c906108c | 7427 | case DW_TAG_base_type: |
a02abb62 | 7428 | case DW_TAG_subrange_type: |
c906108c | 7429 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 7430 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 7431 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7432 | break; |
7433 | case DW_TAG_enumerator: | |
63d06c5c DC |
7434 | if (processing_has_namespace_info |
7435 | && processing_current_prefix[0] != '\0') | |
7436 | { | |
987504bb JJ |
7437 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7438 | processing_current_prefix, | |
7439 | name, cu); | |
63d06c5c | 7440 | } |
e142c38c | 7441 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7442 | if (attr) |
7443 | { | |
e7c27a73 | 7444 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7445 | } |
63d06c5c DC |
7446 | { |
7447 | /* NOTE: carlton/2003-11-10: See comment above in the | |
7448 | DW_TAG_class_type, etc. block. */ | |
7449 | ||
7450 | struct pending **list_to_add; | |
7451 | ||
e142c38c | 7452 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7453 | && (cu->language == language_cplus |
7454 | || cu->language == language_java) | |
e142c38c | 7455 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7456 | |
7457 | add_symbol_to_list (sym, list_to_add); | |
7458 | } | |
c906108c | 7459 | break; |
5c4e30ca DC |
7460 | case DW_TAG_namespace: |
7461 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7462 | add_symbol_to_list (sym, &global_symbols); | |
7463 | break; | |
c906108c SS |
7464 | default: |
7465 | /* Not a tag we recognize. Hopefully we aren't processing | |
7466 | trash data, but since we must specifically ignore things | |
7467 | we don't recognize, there is nothing else we should do at | |
7468 | this point. */ | |
e2e0b3e5 | 7469 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 7470 | dwarf_tag_name (die->tag)); |
c906108c SS |
7471 | break; |
7472 | } | |
7473 | } | |
7474 | return (sym); | |
7475 | } | |
7476 | ||
7477 | /* Copy constant value from an attribute to a symbol. */ | |
7478 | ||
7479 | static void | |
107d2387 | 7480 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 7481 | struct dwarf2_cu *cu) |
c906108c | 7482 | { |
e7c27a73 DJ |
7483 | struct objfile *objfile = cu->objfile; |
7484 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7485 | struct dwarf_block *blk; |
7486 | ||
7487 | switch (attr->form) | |
7488 | { | |
7489 | case DW_FORM_addr: | |
107d2387 | 7490 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 7491 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7492 | cu_header->addr_size, |
7493 | TYPE_LENGTH (SYMBOL_TYPE | |
7494 | (sym))); | |
4e38b386 | 7495 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7496 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
7497 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
7498 | it's body - store_unsigned_integer. */ | |
7499 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
7500 | DW_ADDR (attr)); | |
c906108c SS |
7501 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
7502 | break; | |
7503 | case DW_FORM_block1: | |
7504 | case DW_FORM_block2: | |
7505 | case DW_FORM_block4: | |
7506 | case DW_FORM_block: | |
7507 | blk = DW_BLOCK (attr); | |
7508 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 7509 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7510 | blk->size, |
7511 | TYPE_LENGTH (SYMBOL_TYPE | |
7512 | (sym))); | |
4e38b386 | 7513 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7514 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
7515 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
7516 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7517 | break; | |
2df3850c JM |
7518 | |
7519 | /* The DW_AT_const_value attributes are supposed to carry the | |
7520 | symbol's value "represented as it would be on the target | |
7521 | architecture." By the time we get here, it's already been | |
7522 | converted to host endianness, so we just need to sign- or | |
7523 | zero-extend it as appropriate. */ | |
7524 | case DW_FORM_data1: | |
7525 | dwarf2_const_value_data (attr, sym, 8); | |
7526 | break; | |
c906108c | 7527 | case DW_FORM_data2: |
2df3850c JM |
7528 | dwarf2_const_value_data (attr, sym, 16); |
7529 | break; | |
c906108c | 7530 | case DW_FORM_data4: |
2df3850c JM |
7531 | dwarf2_const_value_data (attr, sym, 32); |
7532 | break; | |
c906108c | 7533 | case DW_FORM_data8: |
2df3850c JM |
7534 | dwarf2_const_value_data (attr, sym, 64); |
7535 | break; | |
7536 | ||
c906108c | 7537 | case DW_FORM_sdata: |
2df3850c JM |
7538 | SYMBOL_VALUE (sym) = DW_SND (attr); |
7539 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7540 | break; | |
7541 | ||
c906108c SS |
7542 | case DW_FORM_udata: |
7543 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
7544 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7545 | break; | |
2df3850c | 7546 | |
c906108c | 7547 | default: |
4d3c2250 | 7548 | complaint (&symfile_complaints, |
e2e0b3e5 | 7549 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 7550 | dwarf_form_name (attr->form)); |
c906108c SS |
7551 | SYMBOL_VALUE (sym) = 0; |
7552 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7553 | break; | |
7554 | } | |
7555 | } | |
7556 | ||
2df3850c JM |
7557 | |
7558 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
7559 | or zero-extend it as appropriate for the symbol's type. */ | |
7560 | static void | |
7561 | dwarf2_const_value_data (struct attribute *attr, | |
7562 | struct symbol *sym, | |
7563 | int bits) | |
7564 | { | |
7565 | LONGEST l = DW_UNSND (attr); | |
7566 | ||
7567 | if (bits < sizeof (l) * 8) | |
7568 | { | |
7569 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
7570 | l &= ((LONGEST) 1 << bits) - 1; | |
7571 | else | |
bf9198f1 | 7572 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
7573 | } |
7574 | ||
7575 | SYMBOL_VALUE (sym) = l; | |
7576 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7577 | } | |
7578 | ||
7579 | ||
c906108c SS |
7580 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
7581 | ||
7582 | static struct type * | |
e7c27a73 | 7583 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7584 | { |
7585 | struct type *type; | |
7586 | struct attribute *type_attr; | |
7587 | struct die_info *type_die; | |
c906108c | 7588 | |
e142c38c | 7589 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
7590 | if (!type_attr) |
7591 | { | |
7592 | /* A missing DW_AT_type represents a void type. */ | |
6ccb9162 | 7593 | return builtin_type (current_gdbarch)->builtin_void; |
c906108c SS |
7594 | } |
7595 | else | |
10b3939b DJ |
7596 | type_die = follow_die_ref (die, type_attr, cu); |
7597 | ||
e7c27a73 | 7598 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7599 | if (!type) |
7600 | { | |
7601 | dump_die (type_die); | |
8a3fe4f8 | 7602 | error (_("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]"), |
e7c27a73 | 7603 | cu->objfile->name); |
c906108c SS |
7604 | } |
7605 | return type; | |
7606 | } | |
7607 | ||
7608 | /* Return the containing type of the die in question using its | |
7609 | DW_AT_containing_type attribute. */ | |
7610 | ||
7611 | static struct type * | |
e7c27a73 | 7612 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7613 | { |
7614 | struct type *type = NULL; | |
7615 | struct attribute *type_attr; | |
7616 | struct die_info *type_die = NULL; | |
c906108c | 7617 | |
e142c38c | 7618 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
7619 | if (type_attr) |
7620 | { | |
10b3939b | 7621 | type_die = follow_die_ref (die, type_attr, cu); |
e7c27a73 | 7622 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7623 | } |
7624 | if (!type) | |
7625 | { | |
7626 | if (type_die) | |
7627 | dump_die (type_die); | |
8a3fe4f8 | 7628 | error (_("Dwarf Error: Problem turning containing type into gdb type [in module %s]"), |
e7c27a73 | 7629 | cu->objfile->name); |
c906108c SS |
7630 | } |
7631 | return type; | |
7632 | } | |
7633 | ||
c906108c | 7634 | static struct type * |
e7c27a73 | 7635 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7636 | { |
7637 | if (die->type) | |
7638 | { | |
7639 | return die->type; | |
7640 | } | |
7641 | else | |
7642 | { | |
e7c27a73 | 7643 | read_type_die (die, cu); |
c906108c SS |
7644 | if (!die->type) |
7645 | { | |
7646 | dump_die (die); | |
8a3fe4f8 | 7647 | error (_("Dwarf Error: Cannot find type of die [in module %s]"), |
e7c27a73 | 7648 | cu->objfile->name); |
c906108c SS |
7649 | } |
7650 | return die->type; | |
7651 | } | |
7652 | } | |
7653 | ||
7654 | static void | |
e7c27a73 | 7655 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7656 | { |
e142c38c | 7657 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
7658 | const char *old_prefix = processing_current_prefix; |
7659 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
7660 | processing_current_prefix = prefix; | |
7661 | ||
c906108c SS |
7662 | switch (die->tag) |
7663 | { | |
7664 | case DW_TAG_class_type: | |
7665 | case DW_TAG_structure_type: | |
7666 | case DW_TAG_union_type: | |
134d01f1 | 7667 | read_structure_type (die, cu); |
c906108c SS |
7668 | break; |
7669 | case DW_TAG_enumeration_type: | |
134d01f1 | 7670 | read_enumeration_type (die, cu); |
c906108c SS |
7671 | break; |
7672 | case DW_TAG_subprogram: | |
7673 | case DW_TAG_subroutine_type: | |
e7c27a73 | 7674 | read_subroutine_type (die, cu); |
c906108c SS |
7675 | break; |
7676 | case DW_TAG_array_type: | |
e7c27a73 | 7677 | read_array_type (die, cu); |
c906108c | 7678 | break; |
72019c9c GM |
7679 | case DW_TAG_set_type: |
7680 | read_set_type (die, cu); | |
7681 | break; | |
c906108c | 7682 | case DW_TAG_pointer_type: |
e7c27a73 | 7683 | read_tag_pointer_type (die, cu); |
c906108c SS |
7684 | break; |
7685 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 7686 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
7687 | break; |
7688 | case DW_TAG_reference_type: | |
e7c27a73 | 7689 | read_tag_reference_type (die, cu); |
c906108c SS |
7690 | break; |
7691 | case DW_TAG_const_type: | |
e7c27a73 | 7692 | read_tag_const_type (die, cu); |
c906108c SS |
7693 | break; |
7694 | case DW_TAG_volatile_type: | |
e7c27a73 | 7695 | read_tag_volatile_type (die, cu); |
c906108c SS |
7696 | break; |
7697 | case DW_TAG_string_type: | |
e7c27a73 | 7698 | read_tag_string_type (die, cu); |
c906108c SS |
7699 | break; |
7700 | case DW_TAG_typedef: | |
e7c27a73 | 7701 | read_typedef (die, cu); |
c906108c | 7702 | break; |
a02abb62 JB |
7703 | case DW_TAG_subrange_type: |
7704 | read_subrange_type (die, cu); | |
7705 | break; | |
c906108c | 7706 | case DW_TAG_base_type: |
e7c27a73 | 7707 | read_base_type (die, cu); |
c906108c | 7708 | break; |
81a17f79 JB |
7709 | case DW_TAG_unspecified_type: |
7710 | read_unspecified_type (die, cu); | |
7711 | break; | |
c906108c | 7712 | default: |
a1f5b845 | 7713 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 7714 | dwarf_tag_name (die->tag)); |
c906108c SS |
7715 | break; |
7716 | } | |
63d06c5c DC |
7717 | |
7718 | processing_current_prefix = old_prefix; | |
7719 | do_cleanups (back_to); | |
7720 | } | |
7721 | ||
fdde2d81 DC |
7722 | /* Return the name of the namespace/class that DIE is defined within, |
7723 | or "" if we can't tell. The caller should xfree the result. */ | |
7724 | ||
7725 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
7726 | therein) for an example of how to use this function to deal with | |
7727 | DW_AT_specification. */ | |
7728 | ||
7729 | static char * | |
e142c38c | 7730 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
7731 | { |
7732 | struct die_info *parent; | |
7733 | ||
987504bb JJ |
7734 | if (cu->language != language_cplus |
7735 | && cu->language != language_java) | |
63d06c5c DC |
7736 | return NULL; |
7737 | ||
7738 | parent = die->parent; | |
7739 | ||
7740 | if (parent == NULL) | |
7741 | { | |
8176b9b8 | 7742 | return xstrdup (""); |
63d06c5c DC |
7743 | } |
7744 | else | |
7745 | { | |
63d06c5c DC |
7746 | switch (parent->tag) { |
7747 | case DW_TAG_namespace: | |
7748 | { | |
8176b9b8 DC |
7749 | /* FIXME: carlton/2004-03-05: Should I follow extension dies |
7750 | before doing this check? */ | |
7751 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) | |
7752 | { | |
7753 | return xstrdup (TYPE_TAG_NAME (parent->type)); | |
7754 | } | |
7755 | else | |
7756 | { | |
7757 | int dummy; | |
7758 | char *parent_prefix = determine_prefix (parent, cu); | |
987504bb | 7759 | char *retval = typename_concat (NULL, parent_prefix, |
8176b9b8 | 7760 | namespace_name (parent, &dummy, |
987504bb JJ |
7761 | cu), |
7762 | cu); | |
8176b9b8 DC |
7763 | xfree (parent_prefix); |
7764 | return retval; | |
7765 | } | |
63d06c5c DC |
7766 | } |
7767 | break; | |
7768 | case DW_TAG_class_type: | |
7769 | case DW_TAG_structure_type: | |
7770 | { | |
8176b9b8 | 7771 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) |
63d06c5c | 7772 | { |
8176b9b8 | 7773 | return xstrdup (TYPE_TAG_NAME (parent->type)); |
63d06c5c DC |
7774 | } |
7775 | else | |
8176b9b8 DC |
7776 | { |
7777 | const char *old_prefix = processing_current_prefix; | |
7778 | char *new_prefix = determine_prefix (parent, cu); | |
7779 | char *retval; | |
7780 | ||
7781 | processing_current_prefix = new_prefix; | |
7782 | retval = determine_class_name (parent, cu); | |
7783 | processing_current_prefix = old_prefix; | |
7784 | ||
7785 | xfree (new_prefix); | |
7786 | return retval; | |
7787 | } | |
63d06c5c | 7788 | } |
63d06c5c | 7789 | default: |
8176b9b8 | 7790 | return determine_prefix (parent, cu); |
63d06c5c | 7791 | } |
63d06c5c DC |
7792 | } |
7793 | } | |
7794 | ||
987504bb JJ |
7795 | /* Return a newly-allocated string formed by concatenating PREFIX and |
7796 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
7797 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
7798 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
7799 | is used to determine the language and hence, the appropriate separator. */ | |
7800 | ||
7801 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
7802 | |
7803 | static char * | |
987504bb JJ |
7804 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
7805 | struct dwarf2_cu *cu) | |
63d06c5c | 7806 | { |
987504bb | 7807 | char *sep; |
63d06c5c | 7808 | |
987504bb JJ |
7809 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
7810 | sep = ""; | |
7811 | else if (cu->language == language_java) | |
7812 | sep = "."; | |
7813 | else | |
7814 | sep = "::"; | |
63d06c5c | 7815 | |
987504bb JJ |
7816 | if (obs == NULL) |
7817 | { | |
7818 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
7819 | retval[0] = '\0'; | |
7820 | ||
7821 | if (prefix) | |
7822 | { | |
7823 | strcpy (retval, prefix); | |
7824 | strcat (retval, sep); | |
7825 | } | |
7826 | if (suffix) | |
7827 | strcat (retval, suffix); | |
7828 | ||
63d06c5c DC |
7829 | return retval; |
7830 | } | |
987504bb JJ |
7831 | else |
7832 | { | |
7833 | /* We have an obstack. */ | |
7834 | return obconcat (obs, prefix, sep, suffix); | |
7835 | } | |
63d06c5c DC |
7836 | } |
7837 | ||
c906108c SS |
7838 | #if 0 |
7839 | struct die_info * | |
fba45db2 | 7840 | copy_die (struct die_info *old_die) |
c906108c SS |
7841 | { |
7842 | struct die_info *new_die; | |
7843 | int i, num_attrs; | |
7844 | ||
7845 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
7846 | memset (new_die, 0, sizeof (struct die_info)); | |
7847 | ||
7848 | new_die->tag = old_die->tag; | |
7849 | new_die->has_children = old_die->has_children; | |
7850 | new_die->abbrev = old_die->abbrev; | |
7851 | new_die->offset = old_die->offset; | |
7852 | new_die->type = NULL; | |
7853 | ||
7854 | num_attrs = old_die->num_attrs; | |
7855 | new_die->num_attrs = num_attrs; | |
7856 | new_die->attrs = (struct attribute *) | |
7857 | xmalloc (num_attrs * sizeof (struct attribute)); | |
7858 | ||
7859 | for (i = 0; i < old_die->num_attrs; ++i) | |
7860 | { | |
7861 | new_die->attrs[i].name = old_die->attrs[i].name; | |
7862 | new_die->attrs[i].form = old_die->attrs[i].form; | |
7863 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
7864 | } | |
7865 | ||
7866 | new_die->next = NULL; | |
7867 | return new_die; | |
7868 | } | |
7869 | #endif | |
7870 | ||
7871 | /* Return sibling of die, NULL if no sibling. */ | |
7872 | ||
f9aca02d | 7873 | static struct die_info * |
fba45db2 | 7874 | sibling_die (struct die_info *die) |
c906108c | 7875 | { |
639d11d3 | 7876 | return die->sibling; |
c906108c SS |
7877 | } |
7878 | ||
7879 | /* Get linkage name of a die, return NULL if not found. */ | |
7880 | ||
7881 | static char * | |
e142c38c | 7882 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7883 | { |
7884 | struct attribute *attr; | |
7885 | ||
e142c38c | 7886 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
7887 | if (attr && DW_STRING (attr)) |
7888 | return DW_STRING (attr); | |
e142c38c | 7889 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
7890 | if (attr && DW_STRING (attr)) |
7891 | return DW_STRING (attr); | |
7892 | return NULL; | |
7893 | } | |
7894 | ||
9219021c DC |
7895 | /* Get name of a die, return NULL if not found. */ |
7896 | ||
7897 | static char * | |
e142c38c | 7898 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7899 | { |
7900 | struct attribute *attr; | |
7901 | ||
e142c38c | 7902 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
7903 | if (attr && DW_STRING (attr)) |
7904 | return DW_STRING (attr); | |
7905 | return NULL; | |
7906 | } | |
7907 | ||
7908 | /* Return the die that this die in an extension of, or NULL if there | |
7909 | is none. */ | |
7910 | ||
7911 | static struct die_info * | |
e142c38c | 7912 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7913 | { |
7914 | struct attribute *attr; | |
9219021c | 7915 | |
e142c38c | 7916 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
7917 | if (attr == NULL) |
7918 | return NULL; | |
7919 | ||
10b3939b | 7920 | return follow_die_ref (die, attr, cu); |
9219021c DC |
7921 | } |
7922 | ||
c906108c SS |
7923 | /* Convert a DIE tag into its string name. */ |
7924 | ||
7925 | static char * | |
aa1ee363 | 7926 | dwarf_tag_name (unsigned tag) |
c906108c SS |
7927 | { |
7928 | switch (tag) | |
7929 | { | |
7930 | case DW_TAG_padding: | |
7931 | return "DW_TAG_padding"; | |
7932 | case DW_TAG_array_type: | |
7933 | return "DW_TAG_array_type"; | |
7934 | case DW_TAG_class_type: | |
7935 | return "DW_TAG_class_type"; | |
7936 | case DW_TAG_entry_point: | |
7937 | return "DW_TAG_entry_point"; | |
7938 | case DW_TAG_enumeration_type: | |
7939 | return "DW_TAG_enumeration_type"; | |
7940 | case DW_TAG_formal_parameter: | |
7941 | return "DW_TAG_formal_parameter"; | |
7942 | case DW_TAG_imported_declaration: | |
7943 | return "DW_TAG_imported_declaration"; | |
7944 | case DW_TAG_label: | |
7945 | return "DW_TAG_label"; | |
7946 | case DW_TAG_lexical_block: | |
7947 | return "DW_TAG_lexical_block"; | |
7948 | case DW_TAG_member: | |
7949 | return "DW_TAG_member"; | |
7950 | case DW_TAG_pointer_type: | |
7951 | return "DW_TAG_pointer_type"; | |
7952 | case DW_TAG_reference_type: | |
7953 | return "DW_TAG_reference_type"; | |
7954 | case DW_TAG_compile_unit: | |
7955 | return "DW_TAG_compile_unit"; | |
7956 | case DW_TAG_string_type: | |
7957 | return "DW_TAG_string_type"; | |
7958 | case DW_TAG_structure_type: | |
7959 | return "DW_TAG_structure_type"; | |
7960 | case DW_TAG_subroutine_type: | |
7961 | return "DW_TAG_subroutine_type"; | |
7962 | case DW_TAG_typedef: | |
7963 | return "DW_TAG_typedef"; | |
7964 | case DW_TAG_union_type: | |
7965 | return "DW_TAG_union_type"; | |
7966 | case DW_TAG_unspecified_parameters: | |
7967 | return "DW_TAG_unspecified_parameters"; | |
7968 | case DW_TAG_variant: | |
7969 | return "DW_TAG_variant"; | |
7970 | case DW_TAG_common_block: | |
7971 | return "DW_TAG_common_block"; | |
7972 | case DW_TAG_common_inclusion: | |
7973 | return "DW_TAG_common_inclusion"; | |
7974 | case DW_TAG_inheritance: | |
7975 | return "DW_TAG_inheritance"; | |
7976 | case DW_TAG_inlined_subroutine: | |
7977 | return "DW_TAG_inlined_subroutine"; | |
7978 | case DW_TAG_module: | |
7979 | return "DW_TAG_module"; | |
7980 | case DW_TAG_ptr_to_member_type: | |
7981 | return "DW_TAG_ptr_to_member_type"; | |
7982 | case DW_TAG_set_type: | |
7983 | return "DW_TAG_set_type"; | |
7984 | case DW_TAG_subrange_type: | |
7985 | return "DW_TAG_subrange_type"; | |
7986 | case DW_TAG_with_stmt: | |
7987 | return "DW_TAG_with_stmt"; | |
7988 | case DW_TAG_access_declaration: | |
7989 | return "DW_TAG_access_declaration"; | |
7990 | case DW_TAG_base_type: | |
7991 | return "DW_TAG_base_type"; | |
7992 | case DW_TAG_catch_block: | |
7993 | return "DW_TAG_catch_block"; | |
7994 | case DW_TAG_const_type: | |
7995 | return "DW_TAG_const_type"; | |
7996 | case DW_TAG_constant: | |
7997 | return "DW_TAG_constant"; | |
7998 | case DW_TAG_enumerator: | |
7999 | return "DW_TAG_enumerator"; | |
8000 | case DW_TAG_file_type: | |
8001 | return "DW_TAG_file_type"; | |
8002 | case DW_TAG_friend: | |
8003 | return "DW_TAG_friend"; | |
8004 | case DW_TAG_namelist: | |
8005 | return "DW_TAG_namelist"; | |
8006 | case DW_TAG_namelist_item: | |
8007 | return "DW_TAG_namelist_item"; | |
8008 | case DW_TAG_packed_type: | |
8009 | return "DW_TAG_packed_type"; | |
8010 | case DW_TAG_subprogram: | |
8011 | return "DW_TAG_subprogram"; | |
8012 | case DW_TAG_template_type_param: | |
8013 | return "DW_TAG_template_type_param"; | |
8014 | case DW_TAG_template_value_param: | |
8015 | return "DW_TAG_template_value_param"; | |
8016 | case DW_TAG_thrown_type: | |
8017 | return "DW_TAG_thrown_type"; | |
8018 | case DW_TAG_try_block: | |
8019 | return "DW_TAG_try_block"; | |
8020 | case DW_TAG_variant_part: | |
8021 | return "DW_TAG_variant_part"; | |
8022 | case DW_TAG_variable: | |
8023 | return "DW_TAG_variable"; | |
8024 | case DW_TAG_volatile_type: | |
8025 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
8026 | case DW_TAG_dwarf_procedure: |
8027 | return "DW_TAG_dwarf_procedure"; | |
8028 | case DW_TAG_restrict_type: | |
8029 | return "DW_TAG_restrict_type"; | |
8030 | case DW_TAG_interface_type: | |
8031 | return "DW_TAG_interface_type"; | |
8032 | case DW_TAG_namespace: | |
8033 | return "DW_TAG_namespace"; | |
8034 | case DW_TAG_imported_module: | |
8035 | return "DW_TAG_imported_module"; | |
8036 | case DW_TAG_unspecified_type: | |
8037 | return "DW_TAG_unspecified_type"; | |
8038 | case DW_TAG_partial_unit: | |
8039 | return "DW_TAG_partial_unit"; | |
8040 | case DW_TAG_imported_unit: | |
8041 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
8042 | case DW_TAG_condition: |
8043 | return "DW_TAG_condition"; | |
8044 | case DW_TAG_shared_type: | |
8045 | return "DW_TAG_shared_type"; | |
c906108c SS |
8046 | case DW_TAG_MIPS_loop: |
8047 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
8048 | case DW_TAG_HP_array_descriptor: |
8049 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
8050 | case DW_TAG_format_label: |
8051 | return "DW_TAG_format_label"; | |
8052 | case DW_TAG_function_template: | |
8053 | return "DW_TAG_function_template"; | |
8054 | case DW_TAG_class_template: | |
8055 | return "DW_TAG_class_template"; | |
b7619582 GF |
8056 | case DW_TAG_GNU_BINCL: |
8057 | return "DW_TAG_GNU_BINCL"; | |
8058 | case DW_TAG_GNU_EINCL: | |
8059 | return "DW_TAG_GNU_EINCL"; | |
8060 | case DW_TAG_upc_shared_type: | |
8061 | return "DW_TAG_upc_shared_type"; | |
8062 | case DW_TAG_upc_strict_type: | |
8063 | return "DW_TAG_upc_strict_type"; | |
8064 | case DW_TAG_upc_relaxed_type: | |
8065 | return "DW_TAG_upc_relaxed_type"; | |
8066 | case DW_TAG_PGI_kanji_type: | |
8067 | return "DW_TAG_PGI_kanji_type"; | |
8068 | case DW_TAG_PGI_interface_block: | |
8069 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
8070 | default: |
8071 | return "DW_TAG_<unknown>"; | |
8072 | } | |
8073 | } | |
8074 | ||
8075 | /* Convert a DWARF attribute code into its string name. */ | |
8076 | ||
8077 | static char * | |
aa1ee363 | 8078 | dwarf_attr_name (unsigned attr) |
c906108c SS |
8079 | { |
8080 | switch (attr) | |
8081 | { | |
8082 | case DW_AT_sibling: | |
8083 | return "DW_AT_sibling"; | |
8084 | case DW_AT_location: | |
8085 | return "DW_AT_location"; | |
8086 | case DW_AT_name: | |
8087 | return "DW_AT_name"; | |
8088 | case DW_AT_ordering: | |
8089 | return "DW_AT_ordering"; | |
8090 | case DW_AT_subscr_data: | |
8091 | return "DW_AT_subscr_data"; | |
8092 | case DW_AT_byte_size: | |
8093 | return "DW_AT_byte_size"; | |
8094 | case DW_AT_bit_offset: | |
8095 | return "DW_AT_bit_offset"; | |
8096 | case DW_AT_bit_size: | |
8097 | return "DW_AT_bit_size"; | |
8098 | case DW_AT_element_list: | |
8099 | return "DW_AT_element_list"; | |
8100 | case DW_AT_stmt_list: | |
8101 | return "DW_AT_stmt_list"; | |
8102 | case DW_AT_low_pc: | |
8103 | return "DW_AT_low_pc"; | |
8104 | case DW_AT_high_pc: | |
8105 | return "DW_AT_high_pc"; | |
8106 | case DW_AT_language: | |
8107 | return "DW_AT_language"; | |
8108 | case DW_AT_member: | |
8109 | return "DW_AT_member"; | |
8110 | case DW_AT_discr: | |
8111 | return "DW_AT_discr"; | |
8112 | case DW_AT_discr_value: | |
8113 | return "DW_AT_discr_value"; | |
8114 | case DW_AT_visibility: | |
8115 | return "DW_AT_visibility"; | |
8116 | case DW_AT_import: | |
8117 | return "DW_AT_import"; | |
8118 | case DW_AT_string_length: | |
8119 | return "DW_AT_string_length"; | |
8120 | case DW_AT_common_reference: | |
8121 | return "DW_AT_common_reference"; | |
8122 | case DW_AT_comp_dir: | |
8123 | return "DW_AT_comp_dir"; | |
8124 | case DW_AT_const_value: | |
8125 | return "DW_AT_const_value"; | |
8126 | case DW_AT_containing_type: | |
8127 | return "DW_AT_containing_type"; | |
8128 | case DW_AT_default_value: | |
8129 | return "DW_AT_default_value"; | |
8130 | case DW_AT_inline: | |
8131 | return "DW_AT_inline"; | |
8132 | case DW_AT_is_optional: | |
8133 | return "DW_AT_is_optional"; | |
8134 | case DW_AT_lower_bound: | |
8135 | return "DW_AT_lower_bound"; | |
8136 | case DW_AT_producer: | |
8137 | return "DW_AT_producer"; | |
8138 | case DW_AT_prototyped: | |
8139 | return "DW_AT_prototyped"; | |
8140 | case DW_AT_return_addr: | |
8141 | return "DW_AT_return_addr"; | |
8142 | case DW_AT_start_scope: | |
8143 | return "DW_AT_start_scope"; | |
8144 | case DW_AT_stride_size: | |
8145 | return "DW_AT_stride_size"; | |
8146 | case DW_AT_upper_bound: | |
8147 | return "DW_AT_upper_bound"; | |
8148 | case DW_AT_abstract_origin: | |
8149 | return "DW_AT_abstract_origin"; | |
8150 | case DW_AT_accessibility: | |
8151 | return "DW_AT_accessibility"; | |
8152 | case DW_AT_address_class: | |
8153 | return "DW_AT_address_class"; | |
8154 | case DW_AT_artificial: | |
8155 | return "DW_AT_artificial"; | |
8156 | case DW_AT_base_types: | |
8157 | return "DW_AT_base_types"; | |
8158 | case DW_AT_calling_convention: | |
8159 | return "DW_AT_calling_convention"; | |
8160 | case DW_AT_count: | |
8161 | return "DW_AT_count"; | |
8162 | case DW_AT_data_member_location: | |
8163 | return "DW_AT_data_member_location"; | |
8164 | case DW_AT_decl_column: | |
8165 | return "DW_AT_decl_column"; | |
8166 | case DW_AT_decl_file: | |
8167 | return "DW_AT_decl_file"; | |
8168 | case DW_AT_decl_line: | |
8169 | return "DW_AT_decl_line"; | |
8170 | case DW_AT_declaration: | |
8171 | return "DW_AT_declaration"; | |
8172 | case DW_AT_discr_list: | |
8173 | return "DW_AT_discr_list"; | |
8174 | case DW_AT_encoding: | |
8175 | return "DW_AT_encoding"; | |
8176 | case DW_AT_external: | |
8177 | return "DW_AT_external"; | |
8178 | case DW_AT_frame_base: | |
8179 | return "DW_AT_frame_base"; | |
8180 | case DW_AT_friend: | |
8181 | return "DW_AT_friend"; | |
8182 | case DW_AT_identifier_case: | |
8183 | return "DW_AT_identifier_case"; | |
8184 | case DW_AT_macro_info: | |
8185 | return "DW_AT_macro_info"; | |
8186 | case DW_AT_namelist_items: | |
8187 | return "DW_AT_namelist_items"; | |
8188 | case DW_AT_priority: | |
8189 | return "DW_AT_priority"; | |
8190 | case DW_AT_segment: | |
8191 | return "DW_AT_segment"; | |
8192 | case DW_AT_specification: | |
8193 | return "DW_AT_specification"; | |
8194 | case DW_AT_static_link: | |
8195 | return "DW_AT_static_link"; | |
8196 | case DW_AT_type: | |
8197 | return "DW_AT_type"; | |
8198 | case DW_AT_use_location: | |
8199 | return "DW_AT_use_location"; | |
8200 | case DW_AT_variable_parameter: | |
8201 | return "DW_AT_variable_parameter"; | |
8202 | case DW_AT_virtuality: | |
8203 | return "DW_AT_virtuality"; | |
8204 | case DW_AT_vtable_elem_location: | |
8205 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 8206 | /* DWARF 3 values. */ |
d9fa45fe DC |
8207 | case DW_AT_allocated: |
8208 | return "DW_AT_allocated"; | |
8209 | case DW_AT_associated: | |
8210 | return "DW_AT_associated"; | |
8211 | case DW_AT_data_location: | |
8212 | return "DW_AT_data_location"; | |
8213 | case DW_AT_stride: | |
8214 | return "DW_AT_stride"; | |
8215 | case DW_AT_entry_pc: | |
8216 | return "DW_AT_entry_pc"; | |
8217 | case DW_AT_use_UTF8: | |
8218 | return "DW_AT_use_UTF8"; | |
8219 | case DW_AT_extension: | |
8220 | return "DW_AT_extension"; | |
8221 | case DW_AT_ranges: | |
8222 | return "DW_AT_ranges"; | |
8223 | case DW_AT_trampoline: | |
8224 | return "DW_AT_trampoline"; | |
8225 | case DW_AT_call_column: | |
8226 | return "DW_AT_call_column"; | |
8227 | case DW_AT_call_file: | |
8228 | return "DW_AT_call_file"; | |
8229 | case DW_AT_call_line: | |
8230 | return "DW_AT_call_line"; | |
b7619582 GF |
8231 | case DW_AT_description: |
8232 | return "DW_AT_description"; | |
8233 | case DW_AT_binary_scale: | |
8234 | return "DW_AT_binary_scale"; | |
8235 | case DW_AT_decimal_scale: | |
8236 | return "DW_AT_decimal_scale"; | |
8237 | case DW_AT_small: | |
8238 | return "DW_AT_small"; | |
8239 | case DW_AT_decimal_sign: | |
8240 | return "DW_AT_decimal_sign"; | |
8241 | case DW_AT_digit_count: | |
8242 | return "DW_AT_digit_count"; | |
8243 | case DW_AT_picture_string: | |
8244 | return "DW_AT_picture_string"; | |
8245 | case DW_AT_mutable: | |
8246 | return "DW_AT_mutable"; | |
8247 | case DW_AT_threads_scaled: | |
8248 | return "DW_AT_threads_scaled"; | |
8249 | case DW_AT_explicit: | |
8250 | return "DW_AT_explicit"; | |
8251 | case DW_AT_object_pointer: | |
8252 | return "DW_AT_object_pointer"; | |
8253 | case DW_AT_endianity: | |
8254 | return "DW_AT_endianity"; | |
8255 | case DW_AT_elemental: | |
8256 | return "DW_AT_elemental"; | |
8257 | case DW_AT_pure: | |
8258 | return "DW_AT_pure"; | |
8259 | case DW_AT_recursive: | |
8260 | return "DW_AT_recursive"; | |
c906108c | 8261 | #ifdef MIPS |
b7619582 | 8262 | /* SGI/MIPS extensions. */ |
c906108c SS |
8263 | case DW_AT_MIPS_fde: |
8264 | return "DW_AT_MIPS_fde"; | |
8265 | case DW_AT_MIPS_loop_begin: | |
8266 | return "DW_AT_MIPS_loop_begin"; | |
8267 | case DW_AT_MIPS_tail_loop_begin: | |
8268 | return "DW_AT_MIPS_tail_loop_begin"; | |
8269 | case DW_AT_MIPS_epilog_begin: | |
8270 | return "DW_AT_MIPS_epilog_begin"; | |
8271 | case DW_AT_MIPS_loop_unroll_factor: | |
8272 | return "DW_AT_MIPS_loop_unroll_factor"; | |
8273 | case DW_AT_MIPS_software_pipeline_depth: | |
8274 | return "DW_AT_MIPS_software_pipeline_depth"; | |
8275 | case DW_AT_MIPS_linkage_name: | |
8276 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
8277 | case DW_AT_MIPS_stride: |
8278 | return "DW_AT_MIPS_stride"; | |
8279 | case DW_AT_MIPS_abstract_name: | |
8280 | return "DW_AT_MIPS_abstract_name"; | |
8281 | case DW_AT_MIPS_clone_origin: | |
8282 | return "DW_AT_MIPS_clone_origin"; | |
8283 | case DW_AT_MIPS_has_inlines: | |
8284 | return "DW_AT_MIPS_has_inlines"; | |
8285 | #endif | |
8286 | /* HP extensions. */ | |
8287 | case DW_AT_HP_block_index: | |
8288 | return "DW_AT_HP_block_index"; | |
8289 | case DW_AT_HP_unmodifiable: | |
8290 | return "DW_AT_HP_unmodifiable"; | |
8291 | case DW_AT_HP_actuals_stmt_list: | |
8292 | return "DW_AT_HP_actuals_stmt_list"; | |
8293 | case DW_AT_HP_proc_per_section: | |
8294 | return "DW_AT_HP_proc_per_section"; | |
8295 | case DW_AT_HP_raw_data_ptr: | |
8296 | return "DW_AT_HP_raw_data_ptr"; | |
8297 | case DW_AT_HP_pass_by_reference: | |
8298 | return "DW_AT_HP_pass_by_reference"; | |
8299 | case DW_AT_HP_opt_level: | |
8300 | return "DW_AT_HP_opt_level"; | |
8301 | case DW_AT_HP_prof_version_id: | |
8302 | return "DW_AT_HP_prof_version_id"; | |
8303 | case DW_AT_HP_opt_flags: | |
8304 | return "DW_AT_HP_opt_flags"; | |
8305 | case DW_AT_HP_cold_region_low_pc: | |
8306 | return "DW_AT_HP_cold_region_low_pc"; | |
8307 | case DW_AT_HP_cold_region_high_pc: | |
8308 | return "DW_AT_HP_cold_region_high_pc"; | |
8309 | case DW_AT_HP_all_variables_modifiable: | |
8310 | return "DW_AT_HP_all_variables_modifiable"; | |
8311 | case DW_AT_HP_linkage_name: | |
8312 | return "DW_AT_HP_linkage_name"; | |
8313 | case DW_AT_HP_prof_flags: | |
8314 | return "DW_AT_HP_prof_flags"; | |
8315 | /* GNU extensions. */ | |
c906108c SS |
8316 | case DW_AT_sf_names: |
8317 | return "DW_AT_sf_names"; | |
8318 | case DW_AT_src_info: | |
8319 | return "DW_AT_src_info"; | |
8320 | case DW_AT_mac_info: | |
8321 | return "DW_AT_mac_info"; | |
8322 | case DW_AT_src_coords: | |
8323 | return "DW_AT_src_coords"; | |
8324 | case DW_AT_body_begin: | |
8325 | return "DW_AT_body_begin"; | |
8326 | case DW_AT_body_end: | |
8327 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
8328 | case DW_AT_GNU_vector: |
8329 | return "DW_AT_GNU_vector"; | |
b7619582 GF |
8330 | /* VMS extensions. */ |
8331 | case DW_AT_VMS_rtnbeg_pd_address: | |
8332 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
8333 | /* UPC extension. */ | |
8334 | case DW_AT_upc_threads_scaled: | |
8335 | return "DW_AT_upc_threads_scaled"; | |
8336 | /* PGI (STMicroelectronics) extensions. */ | |
8337 | case DW_AT_PGI_lbase: | |
8338 | return "DW_AT_PGI_lbase"; | |
8339 | case DW_AT_PGI_soffset: | |
8340 | return "DW_AT_PGI_soffset"; | |
8341 | case DW_AT_PGI_lstride: | |
8342 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
8343 | default: |
8344 | return "DW_AT_<unknown>"; | |
8345 | } | |
8346 | } | |
8347 | ||
8348 | /* Convert a DWARF value form code into its string name. */ | |
8349 | ||
8350 | static char * | |
aa1ee363 | 8351 | dwarf_form_name (unsigned form) |
c906108c SS |
8352 | { |
8353 | switch (form) | |
8354 | { | |
8355 | case DW_FORM_addr: | |
8356 | return "DW_FORM_addr"; | |
8357 | case DW_FORM_block2: | |
8358 | return "DW_FORM_block2"; | |
8359 | case DW_FORM_block4: | |
8360 | return "DW_FORM_block4"; | |
8361 | case DW_FORM_data2: | |
8362 | return "DW_FORM_data2"; | |
8363 | case DW_FORM_data4: | |
8364 | return "DW_FORM_data4"; | |
8365 | case DW_FORM_data8: | |
8366 | return "DW_FORM_data8"; | |
8367 | case DW_FORM_string: | |
8368 | return "DW_FORM_string"; | |
8369 | case DW_FORM_block: | |
8370 | return "DW_FORM_block"; | |
8371 | case DW_FORM_block1: | |
8372 | return "DW_FORM_block1"; | |
8373 | case DW_FORM_data1: | |
8374 | return "DW_FORM_data1"; | |
8375 | case DW_FORM_flag: | |
8376 | return "DW_FORM_flag"; | |
8377 | case DW_FORM_sdata: | |
8378 | return "DW_FORM_sdata"; | |
8379 | case DW_FORM_strp: | |
8380 | return "DW_FORM_strp"; | |
8381 | case DW_FORM_udata: | |
8382 | return "DW_FORM_udata"; | |
8383 | case DW_FORM_ref_addr: | |
8384 | return "DW_FORM_ref_addr"; | |
8385 | case DW_FORM_ref1: | |
8386 | return "DW_FORM_ref1"; | |
8387 | case DW_FORM_ref2: | |
8388 | return "DW_FORM_ref2"; | |
8389 | case DW_FORM_ref4: | |
8390 | return "DW_FORM_ref4"; | |
8391 | case DW_FORM_ref8: | |
8392 | return "DW_FORM_ref8"; | |
8393 | case DW_FORM_ref_udata: | |
8394 | return "DW_FORM_ref_udata"; | |
8395 | case DW_FORM_indirect: | |
8396 | return "DW_FORM_indirect"; | |
8397 | default: | |
8398 | return "DW_FORM_<unknown>"; | |
8399 | } | |
8400 | } | |
8401 | ||
8402 | /* Convert a DWARF stack opcode into its string name. */ | |
8403 | ||
8404 | static char * | |
aa1ee363 | 8405 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
8406 | { |
8407 | switch (op) | |
8408 | { | |
8409 | case DW_OP_addr: | |
8410 | return "DW_OP_addr"; | |
8411 | case DW_OP_deref: | |
8412 | return "DW_OP_deref"; | |
8413 | case DW_OP_const1u: | |
8414 | return "DW_OP_const1u"; | |
8415 | case DW_OP_const1s: | |
8416 | return "DW_OP_const1s"; | |
8417 | case DW_OP_const2u: | |
8418 | return "DW_OP_const2u"; | |
8419 | case DW_OP_const2s: | |
8420 | return "DW_OP_const2s"; | |
8421 | case DW_OP_const4u: | |
8422 | return "DW_OP_const4u"; | |
8423 | case DW_OP_const4s: | |
8424 | return "DW_OP_const4s"; | |
8425 | case DW_OP_const8u: | |
8426 | return "DW_OP_const8u"; | |
8427 | case DW_OP_const8s: | |
8428 | return "DW_OP_const8s"; | |
8429 | case DW_OP_constu: | |
8430 | return "DW_OP_constu"; | |
8431 | case DW_OP_consts: | |
8432 | return "DW_OP_consts"; | |
8433 | case DW_OP_dup: | |
8434 | return "DW_OP_dup"; | |
8435 | case DW_OP_drop: | |
8436 | return "DW_OP_drop"; | |
8437 | case DW_OP_over: | |
8438 | return "DW_OP_over"; | |
8439 | case DW_OP_pick: | |
8440 | return "DW_OP_pick"; | |
8441 | case DW_OP_swap: | |
8442 | return "DW_OP_swap"; | |
8443 | case DW_OP_rot: | |
8444 | return "DW_OP_rot"; | |
8445 | case DW_OP_xderef: | |
8446 | return "DW_OP_xderef"; | |
8447 | case DW_OP_abs: | |
8448 | return "DW_OP_abs"; | |
8449 | case DW_OP_and: | |
8450 | return "DW_OP_and"; | |
8451 | case DW_OP_div: | |
8452 | return "DW_OP_div"; | |
8453 | case DW_OP_minus: | |
8454 | return "DW_OP_minus"; | |
8455 | case DW_OP_mod: | |
8456 | return "DW_OP_mod"; | |
8457 | case DW_OP_mul: | |
8458 | return "DW_OP_mul"; | |
8459 | case DW_OP_neg: | |
8460 | return "DW_OP_neg"; | |
8461 | case DW_OP_not: | |
8462 | return "DW_OP_not"; | |
8463 | case DW_OP_or: | |
8464 | return "DW_OP_or"; | |
8465 | case DW_OP_plus: | |
8466 | return "DW_OP_plus"; | |
8467 | case DW_OP_plus_uconst: | |
8468 | return "DW_OP_plus_uconst"; | |
8469 | case DW_OP_shl: | |
8470 | return "DW_OP_shl"; | |
8471 | case DW_OP_shr: | |
8472 | return "DW_OP_shr"; | |
8473 | case DW_OP_shra: | |
8474 | return "DW_OP_shra"; | |
8475 | case DW_OP_xor: | |
8476 | return "DW_OP_xor"; | |
8477 | case DW_OP_bra: | |
8478 | return "DW_OP_bra"; | |
8479 | case DW_OP_eq: | |
8480 | return "DW_OP_eq"; | |
8481 | case DW_OP_ge: | |
8482 | return "DW_OP_ge"; | |
8483 | case DW_OP_gt: | |
8484 | return "DW_OP_gt"; | |
8485 | case DW_OP_le: | |
8486 | return "DW_OP_le"; | |
8487 | case DW_OP_lt: | |
8488 | return "DW_OP_lt"; | |
8489 | case DW_OP_ne: | |
8490 | return "DW_OP_ne"; | |
8491 | case DW_OP_skip: | |
8492 | return "DW_OP_skip"; | |
8493 | case DW_OP_lit0: | |
8494 | return "DW_OP_lit0"; | |
8495 | case DW_OP_lit1: | |
8496 | return "DW_OP_lit1"; | |
8497 | case DW_OP_lit2: | |
8498 | return "DW_OP_lit2"; | |
8499 | case DW_OP_lit3: | |
8500 | return "DW_OP_lit3"; | |
8501 | case DW_OP_lit4: | |
8502 | return "DW_OP_lit4"; | |
8503 | case DW_OP_lit5: | |
8504 | return "DW_OP_lit5"; | |
8505 | case DW_OP_lit6: | |
8506 | return "DW_OP_lit6"; | |
8507 | case DW_OP_lit7: | |
8508 | return "DW_OP_lit7"; | |
8509 | case DW_OP_lit8: | |
8510 | return "DW_OP_lit8"; | |
8511 | case DW_OP_lit9: | |
8512 | return "DW_OP_lit9"; | |
8513 | case DW_OP_lit10: | |
8514 | return "DW_OP_lit10"; | |
8515 | case DW_OP_lit11: | |
8516 | return "DW_OP_lit11"; | |
8517 | case DW_OP_lit12: | |
8518 | return "DW_OP_lit12"; | |
8519 | case DW_OP_lit13: | |
8520 | return "DW_OP_lit13"; | |
8521 | case DW_OP_lit14: | |
8522 | return "DW_OP_lit14"; | |
8523 | case DW_OP_lit15: | |
8524 | return "DW_OP_lit15"; | |
8525 | case DW_OP_lit16: | |
8526 | return "DW_OP_lit16"; | |
8527 | case DW_OP_lit17: | |
8528 | return "DW_OP_lit17"; | |
8529 | case DW_OP_lit18: | |
8530 | return "DW_OP_lit18"; | |
8531 | case DW_OP_lit19: | |
8532 | return "DW_OP_lit19"; | |
8533 | case DW_OP_lit20: | |
8534 | return "DW_OP_lit20"; | |
8535 | case DW_OP_lit21: | |
8536 | return "DW_OP_lit21"; | |
8537 | case DW_OP_lit22: | |
8538 | return "DW_OP_lit22"; | |
8539 | case DW_OP_lit23: | |
8540 | return "DW_OP_lit23"; | |
8541 | case DW_OP_lit24: | |
8542 | return "DW_OP_lit24"; | |
8543 | case DW_OP_lit25: | |
8544 | return "DW_OP_lit25"; | |
8545 | case DW_OP_lit26: | |
8546 | return "DW_OP_lit26"; | |
8547 | case DW_OP_lit27: | |
8548 | return "DW_OP_lit27"; | |
8549 | case DW_OP_lit28: | |
8550 | return "DW_OP_lit28"; | |
8551 | case DW_OP_lit29: | |
8552 | return "DW_OP_lit29"; | |
8553 | case DW_OP_lit30: | |
8554 | return "DW_OP_lit30"; | |
8555 | case DW_OP_lit31: | |
8556 | return "DW_OP_lit31"; | |
8557 | case DW_OP_reg0: | |
8558 | return "DW_OP_reg0"; | |
8559 | case DW_OP_reg1: | |
8560 | return "DW_OP_reg1"; | |
8561 | case DW_OP_reg2: | |
8562 | return "DW_OP_reg2"; | |
8563 | case DW_OP_reg3: | |
8564 | return "DW_OP_reg3"; | |
8565 | case DW_OP_reg4: | |
8566 | return "DW_OP_reg4"; | |
8567 | case DW_OP_reg5: | |
8568 | return "DW_OP_reg5"; | |
8569 | case DW_OP_reg6: | |
8570 | return "DW_OP_reg6"; | |
8571 | case DW_OP_reg7: | |
8572 | return "DW_OP_reg7"; | |
8573 | case DW_OP_reg8: | |
8574 | return "DW_OP_reg8"; | |
8575 | case DW_OP_reg9: | |
8576 | return "DW_OP_reg9"; | |
8577 | case DW_OP_reg10: | |
8578 | return "DW_OP_reg10"; | |
8579 | case DW_OP_reg11: | |
8580 | return "DW_OP_reg11"; | |
8581 | case DW_OP_reg12: | |
8582 | return "DW_OP_reg12"; | |
8583 | case DW_OP_reg13: | |
8584 | return "DW_OP_reg13"; | |
8585 | case DW_OP_reg14: | |
8586 | return "DW_OP_reg14"; | |
8587 | case DW_OP_reg15: | |
8588 | return "DW_OP_reg15"; | |
8589 | case DW_OP_reg16: | |
8590 | return "DW_OP_reg16"; | |
8591 | case DW_OP_reg17: | |
8592 | return "DW_OP_reg17"; | |
8593 | case DW_OP_reg18: | |
8594 | return "DW_OP_reg18"; | |
8595 | case DW_OP_reg19: | |
8596 | return "DW_OP_reg19"; | |
8597 | case DW_OP_reg20: | |
8598 | return "DW_OP_reg20"; | |
8599 | case DW_OP_reg21: | |
8600 | return "DW_OP_reg21"; | |
8601 | case DW_OP_reg22: | |
8602 | return "DW_OP_reg22"; | |
8603 | case DW_OP_reg23: | |
8604 | return "DW_OP_reg23"; | |
8605 | case DW_OP_reg24: | |
8606 | return "DW_OP_reg24"; | |
8607 | case DW_OP_reg25: | |
8608 | return "DW_OP_reg25"; | |
8609 | case DW_OP_reg26: | |
8610 | return "DW_OP_reg26"; | |
8611 | case DW_OP_reg27: | |
8612 | return "DW_OP_reg27"; | |
8613 | case DW_OP_reg28: | |
8614 | return "DW_OP_reg28"; | |
8615 | case DW_OP_reg29: | |
8616 | return "DW_OP_reg29"; | |
8617 | case DW_OP_reg30: | |
8618 | return "DW_OP_reg30"; | |
8619 | case DW_OP_reg31: | |
8620 | return "DW_OP_reg31"; | |
8621 | case DW_OP_breg0: | |
8622 | return "DW_OP_breg0"; | |
8623 | case DW_OP_breg1: | |
8624 | return "DW_OP_breg1"; | |
8625 | case DW_OP_breg2: | |
8626 | return "DW_OP_breg2"; | |
8627 | case DW_OP_breg3: | |
8628 | return "DW_OP_breg3"; | |
8629 | case DW_OP_breg4: | |
8630 | return "DW_OP_breg4"; | |
8631 | case DW_OP_breg5: | |
8632 | return "DW_OP_breg5"; | |
8633 | case DW_OP_breg6: | |
8634 | return "DW_OP_breg6"; | |
8635 | case DW_OP_breg7: | |
8636 | return "DW_OP_breg7"; | |
8637 | case DW_OP_breg8: | |
8638 | return "DW_OP_breg8"; | |
8639 | case DW_OP_breg9: | |
8640 | return "DW_OP_breg9"; | |
8641 | case DW_OP_breg10: | |
8642 | return "DW_OP_breg10"; | |
8643 | case DW_OP_breg11: | |
8644 | return "DW_OP_breg11"; | |
8645 | case DW_OP_breg12: | |
8646 | return "DW_OP_breg12"; | |
8647 | case DW_OP_breg13: | |
8648 | return "DW_OP_breg13"; | |
8649 | case DW_OP_breg14: | |
8650 | return "DW_OP_breg14"; | |
8651 | case DW_OP_breg15: | |
8652 | return "DW_OP_breg15"; | |
8653 | case DW_OP_breg16: | |
8654 | return "DW_OP_breg16"; | |
8655 | case DW_OP_breg17: | |
8656 | return "DW_OP_breg17"; | |
8657 | case DW_OP_breg18: | |
8658 | return "DW_OP_breg18"; | |
8659 | case DW_OP_breg19: | |
8660 | return "DW_OP_breg19"; | |
8661 | case DW_OP_breg20: | |
8662 | return "DW_OP_breg20"; | |
8663 | case DW_OP_breg21: | |
8664 | return "DW_OP_breg21"; | |
8665 | case DW_OP_breg22: | |
8666 | return "DW_OP_breg22"; | |
8667 | case DW_OP_breg23: | |
8668 | return "DW_OP_breg23"; | |
8669 | case DW_OP_breg24: | |
8670 | return "DW_OP_breg24"; | |
8671 | case DW_OP_breg25: | |
8672 | return "DW_OP_breg25"; | |
8673 | case DW_OP_breg26: | |
8674 | return "DW_OP_breg26"; | |
8675 | case DW_OP_breg27: | |
8676 | return "DW_OP_breg27"; | |
8677 | case DW_OP_breg28: | |
8678 | return "DW_OP_breg28"; | |
8679 | case DW_OP_breg29: | |
8680 | return "DW_OP_breg29"; | |
8681 | case DW_OP_breg30: | |
8682 | return "DW_OP_breg30"; | |
8683 | case DW_OP_breg31: | |
8684 | return "DW_OP_breg31"; | |
8685 | case DW_OP_regx: | |
8686 | return "DW_OP_regx"; | |
8687 | case DW_OP_fbreg: | |
8688 | return "DW_OP_fbreg"; | |
8689 | case DW_OP_bregx: | |
8690 | return "DW_OP_bregx"; | |
8691 | case DW_OP_piece: | |
8692 | return "DW_OP_piece"; | |
8693 | case DW_OP_deref_size: | |
8694 | return "DW_OP_deref_size"; | |
8695 | case DW_OP_xderef_size: | |
8696 | return "DW_OP_xderef_size"; | |
8697 | case DW_OP_nop: | |
8698 | return "DW_OP_nop"; | |
b7619582 | 8699 | /* DWARF 3 extensions. */ |
ed348acc EZ |
8700 | case DW_OP_push_object_address: |
8701 | return "DW_OP_push_object_address"; | |
8702 | case DW_OP_call2: | |
8703 | return "DW_OP_call2"; | |
8704 | case DW_OP_call4: | |
8705 | return "DW_OP_call4"; | |
8706 | case DW_OP_call_ref: | |
8707 | return "DW_OP_call_ref"; | |
b7619582 GF |
8708 | /* GNU extensions. */ |
8709 | case DW_OP_form_tls_address: | |
8710 | return "DW_OP_form_tls_address"; | |
8711 | case DW_OP_call_frame_cfa: | |
8712 | return "DW_OP_call_frame_cfa"; | |
8713 | case DW_OP_bit_piece: | |
8714 | return "DW_OP_bit_piece"; | |
ed348acc EZ |
8715 | case DW_OP_GNU_push_tls_address: |
8716 | return "DW_OP_GNU_push_tls_address"; | |
42be36b3 CT |
8717 | case DW_OP_GNU_uninit: |
8718 | return "DW_OP_GNU_uninit"; | |
b7619582 GF |
8719 | /* HP extensions. */ |
8720 | case DW_OP_HP_is_value: | |
8721 | return "DW_OP_HP_is_value"; | |
8722 | case DW_OP_HP_fltconst4: | |
8723 | return "DW_OP_HP_fltconst4"; | |
8724 | case DW_OP_HP_fltconst8: | |
8725 | return "DW_OP_HP_fltconst8"; | |
8726 | case DW_OP_HP_mod_range: | |
8727 | return "DW_OP_HP_mod_range"; | |
8728 | case DW_OP_HP_unmod_range: | |
8729 | return "DW_OP_HP_unmod_range"; | |
8730 | case DW_OP_HP_tls: | |
8731 | return "DW_OP_HP_tls"; | |
c906108c SS |
8732 | default: |
8733 | return "OP_<unknown>"; | |
8734 | } | |
8735 | } | |
8736 | ||
8737 | static char * | |
fba45db2 | 8738 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
8739 | { |
8740 | if (mybool) | |
8741 | return "TRUE"; | |
8742 | else | |
8743 | return "FALSE"; | |
8744 | } | |
8745 | ||
8746 | /* Convert a DWARF type code into its string name. */ | |
8747 | ||
8748 | static char * | |
aa1ee363 | 8749 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
8750 | { |
8751 | switch (enc) | |
8752 | { | |
b7619582 GF |
8753 | case DW_ATE_void: |
8754 | return "DW_ATE_void"; | |
c906108c SS |
8755 | case DW_ATE_address: |
8756 | return "DW_ATE_address"; | |
8757 | case DW_ATE_boolean: | |
8758 | return "DW_ATE_boolean"; | |
8759 | case DW_ATE_complex_float: | |
8760 | return "DW_ATE_complex_float"; | |
8761 | case DW_ATE_float: | |
8762 | return "DW_ATE_float"; | |
8763 | case DW_ATE_signed: | |
8764 | return "DW_ATE_signed"; | |
8765 | case DW_ATE_signed_char: | |
8766 | return "DW_ATE_signed_char"; | |
8767 | case DW_ATE_unsigned: | |
8768 | return "DW_ATE_unsigned"; | |
8769 | case DW_ATE_unsigned_char: | |
8770 | return "DW_ATE_unsigned_char"; | |
b7619582 | 8771 | /* DWARF 3. */ |
d9fa45fe DC |
8772 | case DW_ATE_imaginary_float: |
8773 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
8774 | case DW_ATE_packed_decimal: |
8775 | return "DW_ATE_packed_decimal"; | |
8776 | case DW_ATE_numeric_string: | |
8777 | return "DW_ATE_numeric_string"; | |
8778 | case DW_ATE_edited: | |
8779 | return "DW_ATE_edited"; | |
8780 | case DW_ATE_signed_fixed: | |
8781 | return "DW_ATE_signed_fixed"; | |
8782 | case DW_ATE_unsigned_fixed: | |
8783 | return "DW_ATE_unsigned_fixed"; | |
8784 | case DW_ATE_decimal_float: | |
8785 | return "DW_ATE_decimal_float"; | |
8786 | /* HP extensions. */ | |
8787 | case DW_ATE_HP_float80: | |
8788 | return "DW_ATE_HP_float80"; | |
8789 | case DW_ATE_HP_complex_float80: | |
8790 | return "DW_ATE_HP_complex_float80"; | |
8791 | case DW_ATE_HP_float128: | |
8792 | return "DW_ATE_HP_float128"; | |
8793 | case DW_ATE_HP_complex_float128: | |
8794 | return "DW_ATE_HP_complex_float128"; | |
8795 | case DW_ATE_HP_floathpintel: | |
8796 | return "DW_ATE_HP_floathpintel"; | |
8797 | case DW_ATE_HP_imaginary_float80: | |
8798 | return "DW_ATE_HP_imaginary_float80"; | |
8799 | case DW_ATE_HP_imaginary_float128: | |
8800 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
8801 | default: |
8802 | return "DW_ATE_<unknown>"; | |
8803 | } | |
8804 | } | |
8805 | ||
8806 | /* Convert a DWARF call frame info operation to its string name. */ | |
8807 | ||
8808 | #if 0 | |
8809 | static char * | |
aa1ee363 | 8810 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
8811 | { |
8812 | switch (cfi_opc) | |
8813 | { | |
8814 | case DW_CFA_advance_loc: | |
8815 | return "DW_CFA_advance_loc"; | |
8816 | case DW_CFA_offset: | |
8817 | return "DW_CFA_offset"; | |
8818 | case DW_CFA_restore: | |
8819 | return "DW_CFA_restore"; | |
8820 | case DW_CFA_nop: | |
8821 | return "DW_CFA_nop"; | |
8822 | case DW_CFA_set_loc: | |
8823 | return "DW_CFA_set_loc"; | |
8824 | case DW_CFA_advance_loc1: | |
8825 | return "DW_CFA_advance_loc1"; | |
8826 | case DW_CFA_advance_loc2: | |
8827 | return "DW_CFA_advance_loc2"; | |
8828 | case DW_CFA_advance_loc4: | |
8829 | return "DW_CFA_advance_loc4"; | |
8830 | case DW_CFA_offset_extended: | |
8831 | return "DW_CFA_offset_extended"; | |
8832 | case DW_CFA_restore_extended: | |
8833 | return "DW_CFA_restore_extended"; | |
8834 | case DW_CFA_undefined: | |
8835 | return "DW_CFA_undefined"; | |
8836 | case DW_CFA_same_value: | |
8837 | return "DW_CFA_same_value"; | |
8838 | case DW_CFA_register: | |
8839 | return "DW_CFA_register"; | |
8840 | case DW_CFA_remember_state: | |
8841 | return "DW_CFA_remember_state"; | |
8842 | case DW_CFA_restore_state: | |
8843 | return "DW_CFA_restore_state"; | |
8844 | case DW_CFA_def_cfa: | |
8845 | return "DW_CFA_def_cfa"; | |
8846 | case DW_CFA_def_cfa_register: | |
8847 | return "DW_CFA_def_cfa_register"; | |
8848 | case DW_CFA_def_cfa_offset: | |
8849 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 8850 | /* DWARF 3. */ |
985cb1a3 JM |
8851 | case DW_CFA_def_cfa_expression: |
8852 | return "DW_CFA_def_cfa_expression"; | |
8853 | case DW_CFA_expression: | |
8854 | return "DW_CFA_expression"; | |
8855 | case DW_CFA_offset_extended_sf: | |
8856 | return "DW_CFA_offset_extended_sf"; | |
8857 | case DW_CFA_def_cfa_sf: | |
8858 | return "DW_CFA_def_cfa_sf"; | |
8859 | case DW_CFA_def_cfa_offset_sf: | |
8860 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
8861 | case DW_CFA_val_offset: |
8862 | return "DW_CFA_val_offset"; | |
8863 | case DW_CFA_val_offset_sf: | |
8864 | return "DW_CFA_val_offset_sf"; | |
8865 | case DW_CFA_val_expression: | |
8866 | return "DW_CFA_val_expression"; | |
8867 | /* SGI/MIPS specific. */ | |
c906108c SS |
8868 | case DW_CFA_MIPS_advance_loc8: |
8869 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 8870 | /* GNU extensions. */ |
985cb1a3 JM |
8871 | case DW_CFA_GNU_window_save: |
8872 | return "DW_CFA_GNU_window_save"; | |
8873 | case DW_CFA_GNU_args_size: | |
8874 | return "DW_CFA_GNU_args_size"; | |
8875 | case DW_CFA_GNU_negative_offset_extended: | |
8876 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
8877 | default: |
8878 | return "DW_CFA_<unknown>"; | |
8879 | } | |
8880 | } | |
8881 | #endif | |
8882 | ||
f9aca02d | 8883 | static void |
fba45db2 | 8884 | dump_die (struct die_info *die) |
c906108c SS |
8885 | { |
8886 | unsigned int i; | |
8887 | ||
48cd0caa | 8888 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 8889 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 8890 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 8891 | dwarf_bool_name (die->child != NULL)); |
c906108c | 8892 | |
48cd0caa | 8893 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
8894 | for (i = 0; i < die->num_attrs; ++i) |
8895 | { | |
48cd0caa | 8896 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
8897 | dwarf_attr_name (die->attrs[i].name), |
8898 | dwarf_form_name (die->attrs[i].form)); | |
8899 | switch (die->attrs[i].form) | |
8900 | { | |
8901 | case DW_FORM_ref_addr: | |
8902 | case DW_FORM_addr: | |
48cd0caa | 8903 | fprintf_unfiltered (gdb_stderr, "address: "); |
66bf4b3a | 8904 | deprecated_print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr); |
c906108c SS |
8905 | break; |
8906 | case DW_FORM_block2: | |
8907 | case DW_FORM_block4: | |
8908 | case DW_FORM_block: | |
8909 | case DW_FORM_block1: | |
48cd0caa | 8910 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 8911 | break; |
10b3939b DJ |
8912 | case DW_FORM_ref1: |
8913 | case DW_FORM_ref2: | |
8914 | case DW_FORM_ref4: | |
8915 | fprintf_unfiltered (gdb_stderr, "constant ref: %ld (adjusted)", | |
8916 | (long) (DW_ADDR (&die->attrs[i]))); | |
8917 | break; | |
c906108c SS |
8918 | case DW_FORM_data1: |
8919 | case DW_FORM_data2: | |
8920 | case DW_FORM_data4: | |
ce5d95e1 | 8921 | case DW_FORM_data8: |
c906108c SS |
8922 | case DW_FORM_udata: |
8923 | case DW_FORM_sdata: | |
48cd0caa | 8924 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
8925 | break; |
8926 | case DW_FORM_string: | |
4bdf3d34 | 8927 | case DW_FORM_strp: |
48cd0caa | 8928 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 8929 | DW_STRING (&die->attrs[i]) |
c5aa993b | 8930 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
8931 | break; |
8932 | case DW_FORM_flag: | |
8933 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 8934 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 8935 | else |
48cd0caa | 8936 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 8937 | break; |
a8329558 KW |
8938 | case DW_FORM_indirect: |
8939 | /* the reader will have reduced the indirect form to | |
8940 | the "base form" so this form should not occur */ | |
48cd0caa | 8941 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 8942 | break; |
c906108c | 8943 | default: |
48cd0caa | 8944 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 8945 | die->attrs[i].form); |
c906108c | 8946 | } |
48cd0caa | 8947 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
8948 | } |
8949 | } | |
8950 | ||
f9aca02d | 8951 | static void |
fba45db2 | 8952 | dump_die_list (struct die_info *die) |
c906108c SS |
8953 | { |
8954 | while (die) | |
8955 | { | |
8956 | dump_die (die); | |
639d11d3 DC |
8957 | if (die->child != NULL) |
8958 | dump_die_list (die->child); | |
8959 | if (die->sibling != NULL) | |
8960 | dump_die_list (die->sibling); | |
c906108c SS |
8961 | } |
8962 | } | |
8963 | ||
f9aca02d | 8964 | static void |
10b3939b DJ |
8965 | store_in_ref_table (unsigned int offset, struct die_info *die, |
8966 | struct dwarf2_cu *cu) | |
c906108c SS |
8967 | { |
8968 | int h; | |
8969 | struct die_info *old; | |
8970 | ||
8971 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8972 | old = cu->die_ref_table[h]; |
c906108c | 8973 | die->next_ref = old; |
10b3939b | 8974 | cu->die_ref_table[h] = die; |
c906108c SS |
8975 | } |
8976 | ||
8977 | static unsigned int | |
e142c38c | 8978 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
8979 | { |
8980 | unsigned int result = 0; | |
8981 | ||
8982 | switch (attr->form) | |
8983 | { | |
8984 | case DW_FORM_ref_addr: | |
c906108c SS |
8985 | case DW_FORM_ref1: |
8986 | case DW_FORM_ref2: | |
8987 | case DW_FORM_ref4: | |
613e1657 | 8988 | case DW_FORM_ref8: |
c906108c | 8989 | case DW_FORM_ref_udata: |
10b3939b | 8990 | result = DW_ADDR (attr); |
c906108c SS |
8991 | break; |
8992 | default: | |
4d3c2250 | 8993 | complaint (&symfile_complaints, |
e2e0b3e5 | 8994 | _("unsupported die ref attribute form: '%s'"), |
4d3c2250 | 8995 | dwarf_form_name (attr->form)); |
c906108c SS |
8996 | } |
8997 | return result; | |
8998 | } | |
8999 | ||
a02abb62 JB |
9000 | /* Return the constant value held by the given attribute. Return -1 |
9001 | if the value held by the attribute is not constant. */ | |
9002 | ||
9003 | static int | |
9004 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
9005 | { | |
9006 | if (attr->form == DW_FORM_sdata) | |
9007 | return DW_SND (attr); | |
9008 | else if (attr->form == DW_FORM_udata | |
9009 | || attr->form == DW_FORM_data1 | |
9010 | || attr->form == DW_FORM_data2 | |
9011 | || attr->form == DW_FORM_data4 | |
9012 | || attr->form == DW_FORM_data8) | |
9013 | return DW_UNSND (attr); | |
9014 | else | |
9015 | { | |
e2e0b3e5 | 9016 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
9017 | dwarf_form_name (attr->form)); |
9018 | return default_value; | |
9019 | } | |
9020 | } | |
9021 | ||
f9aca02d | 9022 | static struct die_info * |
10b3939b DJ |
9023 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
9024 | struct dwarf2_cu *cu) | |
c906108c SS |
9025 | { |
9026 | struct die_info *die; | |
10b3939b | 9027 | unsigned int offset; |
c906108c | 9028 | int h; |
10b3939b DJ |
9029 | struct die_info temp_die; |
9030 | struct dwarf2_cu *target_cu; | |
9031 | ||
9032 | offset = dwarf2_get_ref_die_offset (attr, cu); | |
9033 | ||
9034 | if (DW_ADDR (attr) < cu->header.offset | |
9035 | || DW_ADDR (attr) >= cu->header.offset + cu->header.length) | |
9036 | { | |
9037 | struct dwarf2_per_cu_data *per_cu; | |
9038 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (attr), | |
9039 | cu->objfile); | |
9040 | target_cu = per_cu->cu; | |
9041 | } | |
9042 | else | |
9043 | target_cu = cu; | |
c906108c SS |
9044 | |
9045 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 9046 | die = target_cu->die_ref_table[h]; |
c906108c SS |
9047 | while (die) |
9048 | { | |
9049 | if (die->offset == offset) | |
10b3939b | 9050 | return die; |
c906108c SS |
9051 | die = die->next_ref; |
9052 | } | |
10b3939b | 9053 | |
8a3fe4f8 AC |
9054 | error (_("Dwarf Error: Cannot find DIE at 0x%lx referenced from DIE " |
9055 | "at 0x%lx [in module %s]"), | |
10b3939b DJ |
9056 | (long) src_die->offset, (long) offset, cu->objfile->name); |
9057 | ||
c906108c SS |
9058 | return NULL; |
9059 | } | |
9060 | ||
c906108c SS |
9061 | /* Decode simple location descriptions. |
9062 | Given a pointer to a dwarf block that defines a location, compute | |
9063 | the location and return the value. | |
9064 | ||
4cecd739 DJ |
9065 | NOTE drow/2003-11-18: This function is called in two situations |
9066 | now: for the address of static or global variables (partial symbols | |
9067 | only) and for offsets into structures which are expected to be | |
9068 | (more or less) constant. The partial symbol case should go away, | |
9069 | and only the constant case should remain. That will let this | |
9070 | function complain more accurately. A few special modes are allowed | |
9071 | without complaint for global variables (for instance, global | |
9072 | register values and thread-local values). | |
c906108c SS |
9073 | |
9074 | A location description containing no operations indicates that the | |
4cecd739 | 9075 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
9076 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
9077 | callers will only want a very basic result and this can become a | |
9078 | complaint. | |
c906108c | 9079 | |
c906108c SS |
9080 | Note that stack[0] is unused except as a default error return. |
9081 | Note that stack overflow is not yet handled. */ | |
9082 | ||
9083 | static CORE_ADDR | |
e7c27a73 | 9084 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 9085 | { |
e7c27a73 DJ |
9086 | struct objfile *objfile = cu->objfile; |
9087 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
9088 | int i; |
9089 | int size = blk->size; | |
fe1b8b76 | 9090 | gdb_byte *data = blk->data; |
c906108c SS |
9091 | CORE_ADDR stack[64]; |
9092 | int stacki; | |
9093 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 9094 | gdb_byte op; |
c906108c SS |
9095 | |
9096 | i = 0; | |
9097 | stacki = 0; | |
9098 | stack[stacki] = 0; | |
c906108c SS |
9099 | |
9100 | while (i < size) | |
9101 | { | |
c906108c SS |
9102 | op = data[i++]; |
9103 | switch (op) | |
9104 | { | |
f1bea926 JM |
9105 | case DW_OP_lit0: |
9106 | case DW_OP_lit1: | |
9107 | case DW_OP_lit2: | |
9108 | case DW_OP_lit3: | |
9109 | case DW_OP_lit4: | |
9110 | case DW_OP_lit5: | |
9111 | case DW_OP_lit6: | |
9112 | case DW_OP_lit7: | |
9113 | case DW_OP_lit8: | |
9114 | case DW_OP_lit9: | |
9115 | case DW_OP_lit10: | |
9116 | case DW_OP_lit11: | |
9117 | case DW_OP_lit12: | |
9118 | case DW_OP_lit13: | |
9119 | case DW_OP_lit14: | |
9120 | case DW_OP_lit15: | |
9121 | case DW_OP_lit16: | |
9122 | case DW_OP_lit17: | |
9123 | case DW_OP_lit18: | |
9124 | case DW_OP_lit19: | |
9125 | case DW_OP_lit20: | |
9126 | case DW_OP_lit21: | |
9127 | case DW_OP_lit22: | |
9128 | case DW_OP_lit23: | |
9129 | case DW_OP_lit24: | |
9130 | case DW_OP_lit25: | |
9131 | case DW_OP_lit26: | |
9132 | case DW_OP_lit27: | |
9133 | case DW_OP_lit28: | |
9134 | case DW_OP_lit29: | |
9135 | case DW_OP_lit30: | |
9136 | case DW_OP_lit31: | |
9137 | stack[++stacki] = op - DW_OP_lit0; | |
9138 | break; | |
9139 | ||
c906108c SS |
9140 | case DW_OP_reg0: |
9141 | case DW_OP_reg1: | |
9142 | case DW_OP_reg2: | |
9143 | case DW_OP_reg3: | |
9144 | case DW_OP_reg4: | |
9145 | case DW_OP_reg5: | |
9146 | case DW_OP_reg6: | |
9147 | case DW_OP_reg7: | |
9148 | case DW_OP_reg8: | |
9149 | case DW_OP_reg9: | |
9150 | case DW_OP_reg10: | |
9151 | case DW_OP_reg11: | |
9152 | case DW_OP_reg12: | |
9153 | case DW_OP_reg13: | |
9154 | case DW_OP_reg14: | |
9155 | case DW_OP_reg15: | |
9156 | case DW_OP_reg16: | |
9157 | case DW_OP_reg17: | |
9158 | case DW_OP_reg18: | |
9159 | case DW_OP_reg19: | |
9160 | case DW_OP_reg20: | |
9161 | case DW_OP_reg21: | |
9162 | case DW_OP_reg22: | |
9163 | case DW_OP_reg23: | |
9164 | case DW_OP_reg24: | |
9165 | case DW_OP_reg25: | |
9166 | case DW_OP_reg26: | |
9167 | case DW_OP_reg27: | |
9168 | case DW_OP_reg28: | |
9169 | case DW_OP_reg29: | |
9170 | case DW_OP_reg30: | |
9171 | case DW_OP_reg31: | |
c906108c | 9172 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
9173 | if (i < size) |
9174 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9175 | break; |
9176 | ||
9177 | case DW_OP_regx: | |
c906108c SS |
9178 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
9179 | i += bytes_read; | |
c906108c | 9180 | stack[++stacki] = unsnd; |
4cecd739 DJ |
9181 | if (i < size) |
9182 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9183 | break; |
9184 | ||
9185 | case DW_OP_addr: | |
107d2387 | 9186 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 9187 | cu, &bytes_read); |
107d2387 | 9188 | i += bytes_read; |
c906108c SS |
9189 | break; |
9190 | ||
9191 | case DW_OP_const1u: | |
9192 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
9193 | i += 1; | |
9194 | break; | |
9195 | ||
9196 | case DW_OP_const1s: | |
9197 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
9198 | i += 1; | |
9199 | break; | |
9200 | ||
9201 | case DW_OP_const2u: | |
9202 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
9203 | i += 2; | |
9204 | break; | |
9205 | ||
9206 | case DW_OP_const2s: | |
9207 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
9208 | i += 2; | |
9209 | break; | |
9210 | ||
9211 | case DW_OP_const4u: | |
9212 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
9213 | i += 4; | |
9214 | break; | |
9215 | ||
9216 | case DW_OP_const4s: | |
9217 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
9218 | i += 4; | |
9219 | break; | |
9220 | ||
9221 | case DW_OP_constu: | |
9222 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 9223 | &bytes_read); |
c906108c SS |
9224 | i += bytes_read; |
9225 | break; | |
9226 | ||
9227 | case DW_OP_consts: | |
9228 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
9229 | i += bytes_read; | |
9230 | break; | |
9231 | ||
f1bea926 JM |
9232 | case DW_OP_dup: |
9233 | stack[stacki + 1] = stack[stacki]; | |
9234 | stacki++; | |
9235 | break; | |
9236 | ||
c906108c SS |
9237 | case DW_OP_plus: |
9238 | stack[stacki - 1] += stack[stacki]; | |
9239 | stacki--; | |
9240 | break; | |
9241 | ||
9242 | case DW_OP_plus_uconst: | |
9243 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
9244 | i += bytes_read; | |
9245 | break; | |
9246 | ||
9247 | case DW_OP_minus: | |
f1bea926 | 9248 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
9249 | stacki--; |
9250 | break; | |
9251 | ||
7a292a7a | 9252 | case DW_OP_deref: |
7a292a7a | 9253 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
9254 | this using GDB's address_class enum. This is valid for partial |
9255 | global symbols, although the variable's address will be bogus | |
9256 | in the psymtab. */ | |
7a292a7a | 9257 | if (i < size) |
4d3c2250 | 9258 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
9259 | break; |
9260 | ||
9d774e44 | 9261 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
9262 | /* The top of the stack has the offset from the beginning |
9263 | of the thread control block at which the variable is located. */ | |
9264 | /* Nothing should follow this operator, so the top of stack would | |
9265 | be returned. */ | |
4cecd739 DJ |
9266 | /* This is valid for partial global symbols, but the variable's |
9267 | address will be bogus in the psymtab. */ | |
9d774e44 | 9268 | if (i < size) |
4d3c2250 | 9269 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
9270 | break; |
9271 | ||
42be36b3 CT |
9272 | case DW_OP_GNU_uninit: |
9273 | break; | |
9274 | ||
c906108c | 9275 | default: |
e2e0b3e5 | 9276 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
4d3c2250 | 9277 | dwarf_stack_op_name (op)); |
c906108c SS |
9278 | return (stack[stacki]); |
9279 | } | |
9280 | } | |
9281 | return (stack[stacki]); | |
9282 | } | |
9283 | ||
9284 | /* memory allocation interface */ | |
9285 | ||
c906108c | 9286 | static struct dwarf_block * |
7b5a2f43 | 9287 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
9288 | { |
9289 | struct dwarf_block *blk; | |
9290 | ||
9291 | blk = (struct dwarf_block *) | |
7b5a2f43 | 9292 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
9293 | return (blk); |
9294 | } | |
9295 | ||
9296 | static struct abbrev_info * | |
f3dd6933 | 9297 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
9298 | { |
9299 | struct abbrev_info *abbrev; | |
9300 | ||
f3dd6933 DJ |
9301 | abbrev = (struct abbrev_info *) |
9302 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
9303 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
9304 | return (abbrev); | |
9305 | } | |
9306 | ||
9307 | static struct die_info * | |
fba45db2 | 9308 | dwarf_alloc_die (void) |
c906108c SS |
9309 | { |
9310 | struct die_info *die; | |
9311 | ||
9312 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
9313 | memset (die, 0, sizeof (struct die_info)); | |
9314 | return (die); | |
9315 | } | |
2e276125 JB |
9316 | |
9317 | \f | |
9318 | /* Macro support. */ | |
9319 | ||
9320 | ||
9321 | /* Return the full name of file number I in *LH's file name table. | |
9322 | Use COMP_DIR as the name of the current directory of the | |
9323 | compilation. The result is allocated using xmalloc; the caller is | |
9324 | responsible for freeing it. */ | |
9325 | static char * | |
9326 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
9327 | { | |
6a83a1e6 EZ |
9328 | /* Is the file number a valid index into the line header's file name |
9329 | table? Remember that file numbers start with one, not zero. */ | |
9330 | if (1 <= file && file <= lh->num_file_names) | |
9331 | { | |
9332 | struct file_entry *fe = &lh->file_names[file - 1]; | |
2e276125 | 9333 | |
6a83a1e6 EZ |
9334 | if (IS_ABSOLUTE_PATH (fe->name)) |
9335 | return xstrdup (fe->name); | |
9336 | else | |
9337 | { | |
9338 | const char *dir; | |
9339 | int dir_len; | |
9340 | char *full_name; | |
9341 | ||
9342 | if (fe->dir_index) | |
9343 | dir = lh->include_dirs[fe->dir_index - 1]; | |
9344 | else | |
9345 | dir = comp_dir; | |
9346 | ||
9347 | if (dir) | |
9348 | { | |
9349 | dir_len = strlen (dir); | |
9350 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
9351 | strcpy (full_name, dir); | |
9352 | full_name[dir_len] = '/'; | |
9353 | strcpy (full_name + dir_len + 1, fe->name); | |
9354 | return full_name; | |
9355 | } | |
9356 | else | |
9357 | return xstrdup (fe->name); | |
9358 | } | |
9359 | } | |
2e276125 JB |
9360 | else |
9361 | { | |
6a83a1e6 EZ |
9362 | /* The compiler produced a bogus file number. We can at least |
9363 | record the macro definitions made in the file, even if we | |
9364 | won't be able to find the file by name. */ | |
9365 | char fake_name[80]; | |
9366 | sprintf (fake_name, "<bad macro file number %d>", file); | |
2e276125 | 9367 | |
6a83a1e6 EZ |
9368 | complaint (&symfile_complaints, |
9369 | _("bad file number in macro information (%d)"), | |
9370 | file); | |
2e276125 | 9371 | |
6a83a1e6 | 9372 | return xstrdup (fake_name); |
2e276125 JB |
9373 | } |
9374 | } | |
9375 | ||
9376 | ||
9377 | static struct macro_source_file * | |
9378 | macro_start_file (int file, int line, | |
9379 | struct macro_source_file *current_file, | |
9380 | const char *comp_dir, | |
9381 | struct line_header *lh, struct objfile *objfile) | |
9382 | { | |
9383 | /* The full name of this source file. */ | |
9384 | char *full_name = file_full_name (file, lh, comp_dir); | |
9385 | ||
9386 | /* We don't create a macro table for this compilation unit | |
9387 | at all until we actually get a filename. */ | |
9388 | if (! pending_macros) | |
4a146b47 | 9389 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 9390 | objfile->macro_cache); |
2e276125 JB |
9391 | |
9392 | if (! current_file) | |
9393 | /* If we have no current file, then this must be the start_file | |
9394 | directive for the compilation unit's main source file. */ | |
9395 | current_file = macro_set_main (pending_macros, full_name); | |
9396 | else | |
9397 | current_file = macro_include (current_file, line, full_name); | |
9398 | ||
9399 | xfree (full_name); | |
9400 | ||
9401 | return current_file; | |
9402 | } | |
9403 | ||
9404 | ||
9405 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
9406 | followed by a null byte. */ | |
9407 | static char * | |
9408 | copy_string (const char *buf, int len) | |
9409 | { | |
9410 | char *s = xmalloc (len + 1); | |
9411 | memcpy (s, buf, len); | |
9412 | s[len] = '\0'; | |
9413 | ||
9414 | return s; | |
9415 | } | |
9416 | ||
9417 | ||
9418 | static const char * | |
9419 | consume_improper_spaces (const char *p, const char *body) | |
9420 | { | |
9421 | if (*p == ' ') | |
9422 | { | |
4d3c2250 | 9423 | complaint (&symfile_complaints, |
e2e0b3e5 | 9424 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 9425 | body); |
2e276125 JB |
9426 | |
9427 | while (*p == ' ') | |
9428 | p++; | |
9429 | } | |
9430 | ||
9431 | return p; | |
9432 | } | |
9433 | ||
9434 | ||
9435 | static void | |
9436 | parse_macro_definition (struct macro_source_file *file, int line, | |
9437 | const char *body) | |
9438 | { | |
9439 | const char *p; | |
9440 | ||
9441 | /* The body string takes one of two forms. For object-like macro | |
9442 | definitions, it should be: | |
9443 | ||
9444 | <macro name> " " <definition> | |
9445 | ||
9446 | For function-like macro definitions, it should be: | |
9447 | ||
9448 | <macro name> "() " <definition> | |
9449 | or | |
9450 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
9451 | ||
9452 | Spaces may appear only where explicitly indicated, and in the | |
9453 | <definition>. | |
9454 | ||
9455 | The Dwarf 2 spec says that an object-like macro's name is always | |
9456 | followed by a space, but versions of GCC around March 2002 omit | |
9457 | the space when the macro's definition is the empty string. | |
9458 | ||
9459 | The Dwarf 2 spec says that there should be no spaces between the | |
9460 | formal arguments in a function-like macro's formal argument list, | |
9461 | but versions of GCC around March 2002 include spaces after the | |
9462 | commas. */ | |
9463 | ||
9464 | ||
9465 | /* Find the extent of the macro name. The macro name is terminated | |
9466 | by either a space or null character (for an object-like macro) or | |
9467 | an opening paren (for a function-like macro). */ | |
9468 | for (p = body; *p; p++) | |
9469 | if (*p == ' ' || *p == '(') | |
9470 | break; | |
9471 | ||
9472 | if (*p == ' ' || *p == '\0') | |
9473 | { | |
9474 | /* It's an object-like macro. */ | |
9475 | int name_len = p - body; | |
9476 | char *name = copy_string (body, name_len); | |
9477 | const char *replacement; | |
9478 | ||
9479 | if (*p == ' ') | |
9480 | replacement = body + name_len + 1; | |
9481 | else | |
9482 | { | |
4d3c2250 | 9483 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9484 | replacement = body + name_len; |
9485 | } | |
9486 | ||
9487 | macro_define_object (file, line, name, replacement); | |
9488 | ||
9489 | xfree (name); | |
9490 | } | |
9491 | else if (*p == '(') | |
9492 | { | |
9493 | /* It's a function-like macro. */ | |
9494 | char *name = copy_string (body, p - body); | |
9495 | int argc = 0; | |
9496 | int argv_size = 1; | |
9497 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
9498 | ||
9499 | p++; | |
9500 | ||
9501 | p = consume_improper_spaces (p, body); | |
9502 | ||
9503 | /* Parse the formal argument list. */ | |
9504 | while (*p && *p != ')') | |
9505 | { | |
9506 | /* Find the extent of the current argument name. */ | |
9507 | const char *arg_start = p; | |
9508 | ||
9509 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
9510 | p++; | |
9511 | ||
9512 | if (! *p || p == arg_start) | |
4d3c2250 | 9513 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9514 | else |
9515 | { | |
9516 | /* Make sure argv has room for the new argument. */ | |
9517 | if (argc >= argv_size) | |
9518 | { | |
9519 | argv_size *= 2; | |
9520 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
9521 | } | |
9522 | ||
9523 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
9524 | } | |
9525 | ||
9526 | p = consume_improper_spaces (p, body); | |
9527 | ||
9528 | /* Consume the comma, if present. */ | |
9529 | if (*p == ',') | |
9530 | { | |
9531 | p++; | |
9532 | ||
9533 | p = consume_improper_spaces (p, body); | |
9534 | } | |
9535 | } | |
9536 | ||
9537 | if (*p == ')') | |
9538 | { | |
9539 | p++; | |
9540 | ||
9541 | if (*p == ' ') | |
9542 | /* Perfectly formed definition, no complaints. */ | |
9543 | macro_define_function (file, line, name, | |
9544 | argc, (const char **) argv, | |
9545 | p + 1); | |
9546 | else if (*p == '\0') | |
9547 | { | |
9548 | /* Complain, but do define it. */ | |
4d3c2250 | 9549 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9550 | macro_define_function (file, line, name, |
9551 | argc, (const char **) argv, | |
9552 | p); | |
9553 | } | |
9554 | else | |
9555 | /* Just complain. */ | |
4d3c2250 | 9556 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9557 | } |
9558 | else | |
9559 | /* Just complain. */ | |
4d3c2250 | 9560 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9561 | |
9562 | xfree (name); | |
9563 | { | |
9564 | int i; | |
9565 | ||
9566 | for (i = 0; i < argc; i++) | |
9567 | xfree (argv[i]); | |
9568 | } | |
9569 | xfree (argv); | |
9570 | } | |
9571 | else | |
4d3c2250 | 9572 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9573 | } |
9574 | ||
9575 | ||
9576 | static void | |
9577 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
9578 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 9579 | struct dwarf2_cu *cu) |
2e276125 | 9580 | { |
fe1b8b76 | 9581 | gdb_byte *mac_ptr, *mac_end; |
2e276125 JB |
9582 | struct macro_source_file *current_file = 0; |
9583 | ||
6502dd73 | 9584 | if (dwarf2_per_objfile->macinfo_buffer == NULL) |
2e276125 | 9585 | { |
e2e0b3e5 | 9586 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
9587 | return; |
9588 | } | |
9589 | ||
6502dd73 DJ |
9590 | mac_ptr = dwarf2_per_objfile->macinfo_buffer + offset; |
9591 | mac_end = dwarf2_per_objfile->macinfo_buffer | |
9592 | + dwarf2_per_objfile->macinfo_size; | |
2e276125 JB |
9593 | |
9594 | for (;;) | |
9595 | { | |
9596 | enum dwarf_macinfo_record_type macinfo_type; | |
9597 | ||
9598 | /* Do we at least have room for a macinfo type byte? */ | |
9599 | if (mac_ptr >= mac_end) | |
9600 | { | |
4d3c2250 | 9601 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9602 | return; |
9603 | } | |
9604 | ||
9605 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
9606 | mac_ptr++; | |
9607 | ||
9608 | switch (macinfo_type) | |
9609 | { | |
9610 | /* A zero macinfo type indicates the end of the macro | |
9611 | information. */ | |
9612 | case 0: | |
9613 | return; | |
9614 | ||
9615 | case DW_MACINFO_define: | |
9616 | case DW_MACINFO_undef: | |
9617 | { | |
891d2f0b | 9618 | unsigned int bytes_read; |
2e276125 JB |
9619 | int line; |
9620 | char *body; | |
9621 | ||
9622 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9623 | mac_ptr += bytes_read; | |
9624 | body = read_string (abfd, mac_ptr, &bytes_read); | |
9625 | mac_ptr += bytes_read; | |
9626 | ||
9627 | if (! current_file) | |
4d3c2250 | 9628 | complaint (&symfile_complaints, |
e2e0b3e5 | 9629 | _("debug info gives macro %s outside of any file: %s"), |
4d3c2250 KB |
9630 | macinfo_type == |
9631 | DW_MACINFO_define ? "definition" : macinfo_type == | |
9632 | DW_MACINFO_undef ? "undefinition" : | |
9633 | "something-or-other", body); | |
2e276125 JB |
9634 | else |
9635 | { | |
9636 | if (macinfo_type == DW_MACINFO_define) | |
9637 | parse_macro_definition (current_file, line, body); | |
9638 | else if (macinfo_type == DW_MACINFO_undef) | |
9639 | macro_undef (current_file, line, body); | |
9640 | } | |
9641 | } | |
9642 | break; | |
9643 | ||
9644 | case DW_MACINFO_start_file: | |
9645 | { | |
891d2f0b | 9646 | unsigned int bytes_read; |
2e276125 JB |
9647 | int line, file; |
9648 | ||
9649 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9650 | mac_ptr += bytes_read; | |
9651 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9652 | mac_ptr += bytes_read; | |
9653 | ||
9654 | current_file = macro_start_file (file, line, | |
9655 | current_file, comp_dir, | |
e7c27a73 | 9656 | lh, cu->objfile); |
2e276125 JB |
9657 | } |
9658 | break; | |
9659 | ||
9660 | case DW_MACINFO_end_file: | |
9661 | if (! current_file) | |
4d3c2250 | 9662 | complaint (&symfile_complaints, |
e2e0b3e5 | 9663 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
9664 | else |
9665 | { | |
9666 | current_file = current_file->included_by; | |
9667 | if (! current_file) | |
9668 | { | |
9669 | enum dwarf_macinfo_record_type next_type; | |
9670 | ||
9671 | /* GCC circa March 2002 doesn't produce the zero | |
9672 | type byte marking the end of the compilation | |
9673 | unit. Complain if it's not there, but exit no | |
9674 | matter what. */ | |
9675 | ||
9676 | /* Do we at least have room for a macinfo type byte? */ | |
9677 | if (mac_ptr >= mac_end) | |
9678 | { | |
4d3c2250 | 9679 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9680 | return; |
9681 | } | |
9682 | ||
9683 | /* We don't increment mac_ptr here, so this is just | |
9684 | a look-ahead. */ | |
9685 | next_type = read_1_byte (abfd, mac_ptr); | |
9686 | if (next_type != 0) | |
4d3c2250 | 9687 | complaint (&symfile_complaints, |
e2e0b3e5 | 9688 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
9689 | |
9690 | return; | |
9691 | } | |
9692 | } | |
9693 | break; | |
9694 | ||
9695 | case DW_MACINFO_vendor_ext: | |
9696 | { | |
891d2f0b | 9697 | unsigned int bytes_read; |
2e276125 JB |
9698 | int constant; |
9699 | char *string; | |
9700 | ||
9701 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9702 | mac_ptr += bytes_read; | |
9703 | string = read_string (abfd, mac_ptr, &bytes_read); | |
9704 | mac_ptr += bytes_read; | |
9705 | ||
9706 | /* We don't recognize any vendor extensions. */ | |
9707 | } | |
9708 | break; | |
9709 | } | |
9710 | } | |
9711 | } | |
8e19ed76 PS |
9712 | |
9713 | /* Check if the attribute's form is a DW_FORM_block* | |
9714 | if so return true else false. */ | |
9715 | static int | |
9716 | attr_form_is_block (struct attribute *attr) | |
9717 | { | |
9718 | return (attr == NULL ? 0 : | |
9719 | attr->form == DW_FORM_block1 | |
9720 | || attr->form == DW_FORM_block2 | |
9721 | || attr->form == DW_FORM_block4 | |
9722 | || attr->form == DW_FORM_block); | |
9723 | } | |
4c2df51b DJ |
9724 | |
9725 | static void | |
9726 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 9727 | struct dwarf2_cu *cu) |
4c2df51b | 9728 | { |
93e7bd98 DJ |
9729 | struct objfile *objfile = cu->objfile; |
9730 | ||
9731 | /* Save the master objfile, so that we can report and look up the | |
9732 | correct file containing this variable. */ | |
9733 | if (objfile->separate_debug_objfile_backlink) | |
9734 | objfile = objfile->separate_debug_objfile_backlink; | |
9735 | ||
99bcc461 DJ |
9736 | if ((attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) |
9737 | /* ".debug_loc" may not exist at all, or the offset may be outside | |
9738 | the section. If so, fall through to the complaint in the | |
9739 | other branch. */ | |
9740 | && DW_UNSND (attr) < dwarf2_per_objfile->loc_size) | |
4c2df51b | 9741 | { |
0d53c4c4 | 9742 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 9743 | |
4a146b47 | 9744 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9745 | sizeof (struct dwarf2_loclist_baton)); |
93e7bd98 | 9746 | baton->objfile = objfile; |
4c2df51b | 9747 | |
0d53c4c4 DJ |
9748 | /* We don't know how long the location list is, but make sure we |
9749 | don't run off the edge of the section. */ | |
6502dd73 DJ |
9750 | baton->size = dwarf2_per_objfile->loc_size - DW_UNSND (attr); |
9751 | baton->data = dwarf2_per_objfile->loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
9752 | baton->base_address = cu->header.base_address; |
9753 | if (cu->header.base_known == 0) | |
0d53c4c4 | 9754 | complaint (&symfile_complaints, |
e2e0b3e5 | 9755 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 9756 | |
a67af2b9 | 9757 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
9758 | SYMBOL_LOCATION_BATON (sym) = baton; |
9759 | } | |
9760 | else | |
9761 | { | |
9762 | struct dwarf2_locexpr_baton *baton; | |
9763 | ||
4a146b47 | 9764 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9765 | sizeof (struct dwarf2_locexpr_baton)); |
93e7bd98 | 9766 | baton->objfile = objfile; |
0d53c4c4 DJ |
9767 | |
9768 | if (attr_form_is_block (attr)) | |
9769 | { | |
9770 | /* Note that we're just copying the block's data pointer | |
9771 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
9772 | info_buffer for SYM's objfile; right now we never release |
9773 | that buffer, but when we do clean up properly this may | |
9774 | need to change. */ | |
0d53c4c4 DJ |
9775 | baton->size = DW_BLOCK (attr)->size; |
9776 | baton->data = DW_BLOCK (attr)->data; | |
9777 | } | |
9778 | else | |
9779 | { | |
9780 | dwarf2_invalid_attrib_class_complaint ("location description", | |
9781 | SYMBOL_NATURAL_NAME (sym)); | |
9782 | baton->size = 0; | |
9783 | baton->data = NULL; | |
9784 | } | |
9785 | ||
a67af2b9 | 9786 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
9787 | SYMBOL_LOCATION_BATON (sym) = baton; |
9788 | } | |
4c2df51b | 9789 | } |
6502dd73 | 9790 | |
ae038cb0 | 9791 | /* Locate the compilation unit from CU's objfile which contains the |
10b3939b | 9792 | DIE at OFFSET. Raises an error on failure. */ |
ae038cb0 DJ |
9793 | |
9794 | static struct dwarf2_per_cu_data * | |
9795 | dwarf2_find_containing_comp_unit (unsigned long offset, | |
9796 | struct objfile *objfile) | |
9797 | { | |
9798 | struct dwarf2_per_cu_data *this_cu; | |
9799 | int low, high; | |
9800 | ||
ae038cb0 DJ |
9801 | low = 0; |
9802 | high = dwarf2_per_objfile->n_comp_units - 1; | |
9803 | while (high > low) | |
9804 | { | |
9805 | int mid = low + (high - low) / 2; | |
9806 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) | |
9807 | high = mid; | |
9808 | else | |
9809 | low = mid + 1; | |
9810 | } | |
9811 | gdb_assert (low == high); | |
9812 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
9813 | { | |
10b3939b | 9814 | if (low == 0) |
8a3fe4f8 AC |
9815 | error (_("Dwarf Error: could not find partial DIE containing " |
9816 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
9817 | (long) offset, bfd_get_filename (objfile->obfd)); |
9818 | ||
ae038cb0 DJ |
9819 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
9820 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
9821 | } | |
9822 | else | |
9823 | { | |
9824 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
9825 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9826 | && offset >= this_cu->offset + this_cu->length) | |
8a3fe4f8 | 9827 | error (_("invalid dwarf2 offset %ld"), offset); |
ae038cb0 DJ |
9828 | gdb_assert (offset < this_cu->offset + this_cu->length); |
9829 | return this_cu; | |
9830 | } | |
9831 | } | |
9832 | ||
10b3939b DJ |
9833 | /* Locate the compilation unit from OBJFILE which is located at exactly |
9834 | OFFSET. Raises an error on failure. */ | |
9835 | ||
ae038cb0 DJ |
9836 | static struct dwarf2_per_cu_data * |
9837 | dwarf2_find_comp_unit (unsigned long offset, struct objfile *objfile) | |
9838 | { | |
9839 | struct dwarf2_per_cu_data *this_cu; | |
9840 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
9841 | if (this_cu->offset != offset) | |
8a3fe4f8 | 9842 | error (_("no compilation unit with offset %ld."), offset); |
ae038cb0 DJ |
9843 | return this_cu; |
9844 | } | |
9845 | ||
9846 | /* Release one cached compilation unit, CU. We unlink it from the tree | |
9847 | of compilation units, but we don't remove it from the read_in_chain; | |
9848 | the caller is responsible for that. */ | |
9849 | ||
9850 | static void | |
9851 | free_one_comp_unit (void *data) | |
9852 | { | |
9853 | struct dwarf2_cu *cu = data; | |
9854 | ||
9855 | if (cu->per_cu != NULL) | |
9856 | cu->per_cu->cu = NULL; | |
9857 | cu->per_cu = NULL; | |
9858 | ||
9859 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10b3939b DJ |
9860 | if (cu->dies) |
9861 | free_die_list (cu->dies); | |
ae038cb0 DJ |
9862 | |
9863 | xfree (cu); | |
9864 | } | |
9865 | ||
72bf9492 | 9866 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
9867 | when we're finished with it. We can't free the pointer itself, but be |
9868 | sure to unlink it from the cache. Also release any associated storage | |
9869 | and perform cache maintenance. | |
72bf9492 DJ |
9870 | |
9871 | Only used during partial symbol parsing. */ | |
9872 | ||
9873 | static void | |
9874 | free_stack_comp_unit (void *data) | |
9875 | { | |
9876 | struct dwarf2_cu *cu = data; | |
9877 | ||
9878 | obstack_free (&cu->comp_unit_obstack, NULL); | |
9879 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
9880 | |
9881 | if (cu->per_cu != NULL) | |
9882 | { | |
9883 | /* This compilation unit is on the stack in our caller, so we | |
9884 | should not xfree it. Just unlink it. */ | |
9885 | cu->per_cu->cu = NULL; | |
9886 | cu->per_cu = NULL; | |
9887 | ||
9888 | /* If we had a per-cu pointer, then we may have other compilation | |
9889 | units loaded, so age them now. */ | |
9890 | age_cached_comp_units (); | |
9891 | } | |
9892 | } | |
9893 | ||
9894 | /* Free all cached compilation units. */ | |
9895 | ||
9896 | static void | |
9897 | free_cached_comp_units (void *data) | |
9898 | { | |
9899 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9900 | ||
9901 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9902 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9903 | while (per_cu != NULL) | |
9904 | { | |
9905 | struct dwarf2_per_cu_data *next_cu; | |
9906 | ||
9907 | next_cu = per_cu->cu->read_in_chain; | |
9908 | ||
9909 | free_one_comp_unit (per_cu->cu); | |
9910 | *last_chain = next_cu; | |
9911 | ||
9912 | per_cu = next_cu; | |
9913 | } | |
9914 | } | |
9915 | ||
9916 | /* Increase the age counter on each cached compilation unit, and free | |
9917 | any that are too old. */ | |
9918 | ||
9919 | static void | |
9920 | age_cached_comp_units (void) | |
9921 | { | |
9922 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9923 | ||
9924 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
9925 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9926 | while (per_cu != NULL) | |
9927 | { | |
9928 | per_cu->cu->last_used ++; | |
9929 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
9930 | dwarf2_mark (per_cu->cu); | |
9931 | per_cu = per_cu->cu->read_in_chain; | |
9932 | } | |
9933 | ||
9934 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9935 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9936 | while (per_cu != NULL) | |
9937 | { | |
9938 | struct dwarf2_per_cu_data *next_cu; | |
9939 | ||
9940 | next_cu = per_cu->cu->read_in_chain; | |
9941 | ||
9942 | if (!per_cu->cu->mark) | |
9943 | { | |
9944 | free_one_comp_unit (per_cu->cu); | |
9945 | *last_chain = next_cu; | |
9946 | } | |
9947 | else | |
9948 | last_chain = &per_cu->cu->read_in_chain; | |
9949 | ||
9950 | per_cu = next_cu; | |
9951 | } | |
9952 | } | |
9953 | ||
9954 | /* Remove a single compilation unit from the cache. */ | |
9955 | ||
9956 | static void | |
9957 | free_one_cached_comp_unit (void *target_cu) | |
9958 | { | |
9959 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9960 | ||
9961 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9962 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9963 | while (per_cu != NULL) | |
9964 | { | |
9965 | struct dwarf2_per_cu_data *next_cu; | |
9966 | ||
9967 | next_cu = per_cu->cu->read_in_chain; | |
9968 | ||
9969 | if (per_cu->cu == target_cu) | |
9970 | { | |
9971 | free_one_comp_unit (per_cu->cu); | |
9972 | *last_chain = next_cu; | |
9973 | break; | |
9974 | } | |
9975 | else | |
9976 | last_chain = &per_cu->cu->read_in_chain; | |
9977 | ||
9978 | per_cu = next_cu; | |
9979 | } | |
9980 | } | |
9981 | ||
fe3e1990 DJ |
9982 | /* Release all extra memory associated with OBJFILE. */ |
9983 | ||
9984 | void | |
9985 | dwarf2_free_objfile (struct objfile *objfile) | |
9986 | { | |
9987 | dwarf2_per_objfile = objfile_data (objfile, dwarf2_objfile_data_key); | |
9988 | ||
9989 | if (dwarf2_per_objfile == NULL) | |
9990 | return; | |
9991 | ||
9992 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
9993 | free_cached_comp_units (NULL); | |
9994 | ||
9995 | /* Everything else should be on the objfile obstack. */ | |
9996 | } | |
9997 | ||
1c379e20 DJ |
9998 | /* A pair of DIE offset and GDB type pointer. We store these |
9999 | in a hash table separate from the DIEs, and preserve them | |
10000 | when the DIEs are flushed out of cache. */ | |
10001 | ||
10002 | struct dwarf2_offset_and_type | |
10003 | { | |
10004 | unsigned int offset; | |
10005 | struct type *type; | |
10006 | }; | |
10007 | ||
10008 | /* Hash function for a dwarf2_offset_and_type. */ | |
10009 | ||
10010 | static hashval_t | |
10011 | offset_and_type_hash (const void *item) | |
10012 | { | |
10013 | const struct dwarf2_offset_and_type *ofs = item; | |
10014 | return ofs->offset; | |
10015 | } | |
10016 | ||
10017 | /* Equality function for a dwarf2_offset_and_type. */ | |
10018 | ||
10019 | static int | |
10020 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
10021 | { | |
10022 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
10023 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
10024 | return ofs_lhs->offset == ofs_rhs->offset; | |
10025 | } | |
10026 | ||
10027 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
10028 | table if necessary. */ | |
10029 | ||
10030 | static void | |
10031 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
10032 | { | |
10033 | struct dwarf2_offset_and_type **slot, ofs; | |
10034 | ||
10035 | die->type = type; | |
10036 | ||
10037 | if (cu->per_cu == NULL) | |
10038 | return; | |
10039 | ||
10040 | if (cu->per_cu->type_hash == NULL) | |
10041 | cu->per_cu->type_hash | |
10042 | = htab_create_alloc_ex (cu->header.length / 24, | |
10043 | offset_and_type_hash, | |
10044 | offset_and_type_eq, | |
10045 | NULL, | |
10046 | &cu->objfile->objfile_obstack, | |
10047 | hashtab_obstack_allocate, | |
10048 | dummy_obstack_deallocate); | |
10049 | ||
10050 | ofs.offset = die->offset; | |
10051 | ofs.type = type; | |
10052 | slot = (struct dwarf2_offset_and_type **) | |
10053 | htab_find_slot_with_hash (cu->per_cu->type_hash, &ofs, ofs.offset, INSERT); | |
10054 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); | |
10055 | **slot = ofs; | |
10056 | } | |
10057 | ||
1c379e20 DJ |
10058 | /* Find the type for DIE in TYPE_HASH, or return NULL if DIE does not |
10059 | have a saved type. */ | |
10060 | ||
10061 | static struct type * | |
10062 | get_die_type (struct die_info *die, htab_t type_hash) | |
10063 | { | |
10064 | struct dwarf2_offset_and_type *slot, ofs; | |
10065 | ||
10066 | ofs.offset = die->offset; | |
10067 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
10068 | if (slot) | |
10069 | return slot->type; | |
10070 | else | |
10071 | return NULL; | |
10072 | } | |
10073 | ||
10074 | /* Restore the types of the DIE tree starting at START_DIE from the hash | |
10075 | table saved in CU. */ | |
10076 | ||
10077 | static void | |
10078 | reset_die_and_siblings_types (struct die_info *start_die, struct dwarf2_cu *cu) | |
10079 | { | |
10080 | struct die_info *die; | |
10081 | ||
10082 | if (cu->per_cu->type_hash == NULL) | |
10083 | return; | |
10084 | ||
10085 | for (die = start_die; die != NULL; die = die->sibling) | |
10086 | { | |
10087 | die->type = get_die_type (die, cu->per_cu->type_hash); | |
10088 | if (die->child != NULL) | |
10089 | reset_die_and_siblings_types (die->child, cu); | |
10090 | } | |
10091 | } | |
10092 | ||
10b3939b DJ |
10093 | /* Set the mark field in CU and in every other compilation unit in the |
10094 | cache that we must keep because we are keeping CU. */ | |
10095 | ||
10096 | /* Add a dependence relationship from CU to REF_PER_CU. */ | |
10097 | ||
10098 | static void | |
10099 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
10100 | struct dwarf2_per_cu_data *ref_per_cu) | |
10101 | { | |
10102 | void **slot; | |
10103 | ||
10104 | if (cu->dependencies == NULL) | |
10105 | cu->dependencies | |
10106 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
10107 | NULL, &cu->comp_unit_obstack, | |
10108 | hashtab_obstack_allocate, | |
10109 | dummy_obstack_deallocate); | |
10110 | ||
10111 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
10112 | if (*slot == NULL) | |
10113 | *slot = ref_per_cu; | |
10114 | } | |
1c379e20 | 10115 | |
ae038cb0 DJ |
10116 | /* Set the mark field in CU and in every other compilation unit in the |
10117 | cache that we must keep because we are keeping CU. */ | |
10118 | ||
10b3939b DJ |
10119 | static int |
10120 | dwarf2_mark_helper (void **slot, void *data) | |
10121 | { | |
10122 | struct dwarf2_per_cu_data *per_cu; | |
10123 | ||
10124 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
10125 | if (per_cu->cu->mark) | |
10126 | return 1; | |
10127 | per_cu->cu->mark = 1; | |
10128 | ||
10129 | if (per_cu->cu->dependencies != NULL) | |
10130 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
10131 | ||
10132 | return 1; | |
10133 | } | |
10134 | ||
ae038cb0 DJ |
10135 | static void |
10136 | dwarf2_mark (struct dwarf2_cu *cu) | |
10137 | { | |
10138 | if (cu->mark) | |
10139 | return; | |
10140 | cu->mark = 1; | |
10b3939b DJ |
10141 | if (cu->dependencies != NULL) |
10142 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
10143 | } |
10144 | ||
10145 | static void | |
10146 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
10147 | { | |
10148 | while (per_cu) | |
10149 | { | |
10150 | per_cu->cu->mark = 0; | |
10151 | per_cu = per_cu->cu->read_in_chain; | |
10152 | } | |
72bf9492 DJ |
10153 | } |
10154 | ||
72bf9492 DJ |
10155 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
10156 | is its offset in .debug_info for this objfile. */ | |
10157 | ||
10158 | static hashval_t | |
10159 | partial_die_hash (const void *item) | |
10160 | { | |
10161 | const struct partial_die_info *part_die = item; | |
10162 | return part_die->offset; | |
10163 | } | |
10164 | ||
10165 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
10166 | are equal if they have the same offset. */ | |
10167 | ||
10168 | static int | |
10169 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
10170 | { | |
10171 | const struct partial_die_info *part_die_lhs = item_lhs; | |
10172 | const struct partial_die_info *part_die_rhs = item_rhs; | |
10173 | return part_die_lhs->offset == part_die_rhs->offset; | |
10174 | } | |
10175 | ||
ae038cb0 DJ |
10176 | static struct cmd_list_element *set_dwarf2_cmdlist; |
10177 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
10178 | ||
10179 | static void | |
10180 | set_dwarf2_cmd (char *args, int from_tty) | |
10181 | { | |
10182 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
10183 | } | |
10184 | ||
10185 | static void | |
10186 | show_dwarf2_cmd (char *args, int from_tty) | |
10187 | { | |
10188 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
10189 | } | |
10190 | ||
6502dd73 DJ |
10191 | void _initialize_dwarf2_read (void); |
10192 | ||
10193 | void | |
10194 | _initialize_dwarf2_read (void) | |
10195 | { | |
10196 | dwarf2_objfile_data_key = register_objfile_data (); | |
ae038cb0 | 10197 | |
1bedd215 AC |
10198 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
10199 | Set DWARF 2 specific variables.\n\ | |
10200 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10201 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
10202 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
10203 | ||
1bedd215 AC |
10204 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
10205 | Show DWARF 2 specific variables\n\ | |
10206 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10207 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
10208 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
10209 | ||
10210 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
10211 | &dwarf2_max_cache_age, _("\ |
10212 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10213 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10214 | A higher limit means that cached compilation units will be stored\n\ | |
10215 | in memory longer, and more total memory will be used. Zero disables\n\ | |
10216 | caching, which can slow down startup."), | |
2c5b56ce | 10217 | NULL, |
920d2a44 | 10218 | show_dwarf2_max_cache_age, |
2c5b56ce | 10219 | &set_dwarf2_cmdlist, |
ae038cb0 | 10220 | &show_dwarf2_cmdlist); |
6502dd73 | 10221 | } |