Commit | Line | Data |
---|---|---|
c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
72019c9c GM |
3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
4 | 2002, 2003, 2004, 2005, 2006 | |
8e65ff28 | 5 | Free Software Foundation, Inc. |
c906108c SS |
6 | |
7 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
8 | Inc. with support from Florida State University (under contract | |
9 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
10 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
11 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
12 | support in dwarfread.c | |
13 | ||
c5aa993b | 14 | This file is part of GDB. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is free software; you can redistribute it and/or modify |
17 | it under the terms of the GNU General Public License as published by | |
18 | the Free Software Foundation; either version 2 of the License, or (at | |
19 | your option) any later version. | |
c906108c | 20 | |
c5aa993b JM |
21 | This program is distributed in the hope that it will be useful, but |
22 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
23 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
24 | General Public License for more details. | |
c906108c | 25 | |
c5aa993b JM |
26 | You should have received a copy of the GNU General Public License |
27 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
28 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
29 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
30 | |
31 | #include "defs.h" | |
32 | #include "bfd.h" | |
c906108c SS |
33 | #include "symtab.h" |
34 | #include "gdbtypes.h" | |
c906108c SS |
35 | #include "objfiles.h" |
36 | #include "elf/dwarf2.h" | |
37 | #include "buildsym.h" | |
38 | #include "demangle.h" | |
39 | #include "expression.h" | |
d5166ae1 | 40 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 41 | #include "macrotab.h" |
c906108c SS |
42 | #include "language.h" |
43 | #include "complaints.h" | |
357e46e7 | 44 | #include "bcache.h" |
4c2df51b DJ |
45 | #include "dwarf2expr.h" |
46 | #include "dwarf2loc.h" | |
9219021c | 47 | #include "cp-support.h" |
72bf9492 | 48 | #include "hashtab.h" |
ae038cb0 DJ |
49 | #include "command.h" |
50 | #include "gdbcmd.h" | |
4c2df51b | 51 | |
c906108c SS |
52 | #include <fcntl.h> |
53 | #include "gdb_string.h" | |
4bdf3d34 | 54 | #include "gdb_assert.h" |
c906108c SS |
55 | #include <sys/types.h> |
56 | ||
d8151005 DJ |
57 | /* A note on memory usage for this file. |
58 | ||
59 | At the present time, this code reads the debug info sections into | |
60 | the objfile's objfile_obstack. A definite improvement for startup | |
61 | time, on platforms which do not emit relocations for debug | |
62 | sections, would be to use mmap instead. The object's complete | |
63 | debug information is loaded into memory, partly to simplify | |
64 | absolute DIE references. | |
65 | ||
66 | Whether using obstacks or mmap, the sections should remain loaded | |
67 | until the objfile is released, and pointers into the section data | |
68 | can be used for any other data associated to the objfile (symbol | |
69 | names, type names, location expressions to name a few). */ | |
70 | ||
88496bb5 MS |
71 | #ifndef DWARF2_REG_TO_REGNUM |
72 | #define DWARF2_REG_TO_REGNUM(REG) (REG) | |
73 | #endif | |
74 | ||
107d2387 | 75 | #if 0 |
357e46e7 | 76 | /* .debug_info header for a compilation unit |
c906108c SS |
77 | Because of alignment constraints, this structure has padding and cannot |
78 | be mapped directly onto the beginning of the .debug_info section. */ | |
79 | typedef struct comp_unit_header | |
80 | { | |
81 | unsigned int length; /* length of the .debug_info | |
82 | contribution */ | |
83 | unsigned short version; /* version number -- 2 for DWARF | |
84 | version 2 */ | |
85 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
86 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
87 | } | |
88 | _COMP_UNIT_HEADER; | |
89 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 90 | #endif |
c906108c SS |
91 | |
92 | /* .debug_pubnames header | |
93 | Because of alignment constraints, this structure has padding and cannot | |
94 | be mapped directly onto the beginning of the .debug_info section. */ | |
95 | typedef struct pubnames_header | |
96 | { | |
97 | unsigned int length; /* length of the .debug_pubnames | |
98 | contribution */ | |
99 | unsigned char version; /* version number -- 2 for DWARF | |
100 | version 2 */ | |
101 | unsigned int info_offset; /* offset into .debug_info section */ | |
102 | unsigned int info_size; /* byte size of .debug_info section | |
103 | portion */ | |
104 | } | |
105 | _PUBNAMES_HEADER; | |
106 | #define _ACTUAL_PUBNAMES_HEADER_SIZE 13 | |
107 | ||
108 | /* .debug_pubnames header | |
109 | Because of alignment constraints, this structure has padding and cannot | |
110 | be mapped directly onto the beginning of the .debug_info section. */ | |
111 | typedef struct aranges_header | |
112 | { | |
113 | unsigned int length; /* byte len of the .debug_aranges | |
114 | contribution */ | |
115 | unsigned short version; /* version number -- 2 for DWARF | |
116 | version 2 */ | |
117 | unsigned int info_offset; /* offset into .debug_info section */ | |
118 | unsigned char addr_size; /* byte size of an address */ | |
119 | unsigned char seg_size; /* byte size of segment descriptor */ | |
120 | } | |
121 | _ARANGES_HEADER; | |
122 | #define _ACTUAL_ARANGES_HEADER_SIZE 12 | |
123 | ||
124 | /* .debug_line statement program prologue | |
125 | Because of alignment constraints, this structure has padding and cannot | |
126 | be mapped directly onto the beginning of the .debug_info section. */ | |
127 | typedef struct statement_prologue | |
128 | { | |
129 | unsigned int total_length; /* byte length of the statement | |
130 | information */ | |
131 | unsigned short version; /* version number -- 2 for DWARF | |
132 | version 2 */ | |
133 | unsigned int prologue_length; /* # bytes between prologue & | |
134 | stmt program */ | |
135 | unsigned char minimum_instruction_length; /* byte size of | |
136 | smallest instr */ | |
137 | unsigned char default_is_stmt; /* initial value of is_stmt | |
138 | register */ | |
139 | char line_base; | |
140 | unsigned char line_range; | |
141 | unsigned char opcode_base; /* number assigned to first special | |
142 | opcode */ | |
143 | unsigned char *standard_opcode_lengths; | |
144 | } | |
145 | _STATEMENT_PROLOGUE; | |
146 | ||
6502dd73 DJ |
147 | static const struct objfile_data *dwarf2_objfile_data_key; |
148 | ||
149 | struct dwarf2_per_objfile | |
150 | { | |
151 | /* Sizes of debugging sections. */ | |
152 | unsigned int info_size; | |
153 | unsigned int abbrev_size; | |
154 | unsigned int line_size; | |
155 | unsigned int pubnames_size; | |
156 | unsigned int aranges_size; | |
157 | unsigned int loc_size; | |
158 | unsigned int macinfo_size; | |
159 | unsigned int str_size; | |
160 | unsigned int ranges_size; | |
161 | unsigned int frame_size; | |
162 | unsigned int eh_frame_size; | |
163 | ||
164 | /* Loaded data from the sections. */ | |
fe1b8b76 JB |
165 | gdb_byte *info_buffer; |
166 | gdb_byte *abbrev_buffer; | |
167 | gdb_byte *line_buffer; | |
168 | gdb_byte *str_buffer; | |
169 | gdb_byte *macinfo_buffer; | |
170 | gdb_byte *ranges_buffer; | |
171 | gdb_byte *loc_buffer; | |
ae038cb0 | 172 | |
10b3939b DJ |
173 | /* A list of all the compilation units. This is used to locate |
174 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
175 | struct dwarf2_per_cu_data **all_comp_units; |
176 | ||
177 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
178 | int n_comp_units; | |
179 | ||
180 | /* A chain of compilation units that are currently read in, so that | |
181 | they can be freed later. */ | |
182 | struct dwarf2_per_cu_data *read_in_chain; | |
6502dd73 DJ |
183 | }; |
184 | ||
185 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 186 | |
086df311 DJ |
187 | static asection *dwarf_info_section; |
188 | static asection *dwarf_abbrev_section; | |
189 | static asection *dwarf_line_section; | |
190 | static asection *dwarf_pubnames_section; | |
191 | static asection *dwarf_aranges_section; | |
192 | static asection *dwarf_loc_section; | |
193 | static asection *dwarf_macinfo_section; | |
194 | static asection *dwarf_str_section; | |
195 | static asection *dwarf_ranges_section; | |
196 | asection *dwarf_frame_section; | |
197 | asection *dwarf_eh_frame_section; | |
198 | ||
c906108c SS |
199 | /* names of the debugging sections */ |
200 | ||
201 | #define INFO_SECTION ".debug_info" | |
202 | #define ABBREV_SECTION ".debug_abbrev" | |
203 | #define LINE_SECTION ".debug_line" | |
204 | #define PUBNAMES_SECTION ".debug_pubnames" | |
205 | #define ARANGES_SECTION ".debug_aranges" | |
206 | #define LOC_SECTION ".debug_loc" | |
207 | #define MACINFO_SECTION ".debug_macinfo" | |
208 | #define STR_SECTION ".debug_str" | |
af34e669 | 209 | #define RANGES_SECTION ".debug_ranges" |
b6af0555 JS |
210 | #define FRAME_SECTION ".debug_frame" |
211 | #define EH_FRAME_SECTION ".eh_frame" | |
c906108c SS |
212 | |
213 | /* local data types */ | |
214 | ||
57349743 JB |
215 | /* We hold several abbreviation tables in memory at the same time. */ |
216 | #ifndef ABBREV_HASH_SIZE | |
217 | #define ABBREV_HASH_SIZE 121 | |
218 | #endif | |
219 | ||
107d2387 AC |
220 | /* The data in a compilation unit header, after target2host |
221 | translation, looks like this. */ | |
c906108c | 222 | struct comp_unit_head |
a738430d MK |
223 | { |
224 | unsigned long length; | |
225 | short version; | |
226 | unsigned int abbrev_offset; | |
227 | unsigned char addr_size; | |
228 | unsigned char signed_addr_p; | |
57349743 | 229 | |
a738430d MK |
230 | /* Size of file offsets; either 4 or 8. */ |
231 | unsigned int offset_size; | |
57349743 | 232 | |
a738430d MK |
233 | /* Size of the length field; either 4 or 12. */ |
234 | unsigned int initial_length_size; | |
57349743 | 235 | |
a738430d MK |
236 | /* Offset to the first byte of this compilation unit header in the |
237 | .debug_info section, for resolving relative reference dies. */ | |
238 | unsigned int offset; | |
57349743 | 239 | |
a738430d MK |
240 | /* Pointer to this compilation unit header in the .debug_info |
241 | section. */ | |
fe1b8b76 | 242 | gdb_byte *cu_head_ptr; |
57349743 | 243 | |
a738430d MK |
244 | /* Pointer to the first die of this compilation unit. This will be |
245 | the first byte following the compilation unit header. */ | |
fe1b8b76 | 246 | gdb_byte *first_die_ptr; |
af34e669 | 247 | |
a738430d MK |
248 | /* Pointer to the next compilation unit header in the program. */ |
249 | struct comp_unit_head *next; | |
0d53c4c4 | 250 | |
a738430d MK |
251 | /* Base address of this compilation unit. */ |
252 | CORE_ADDR base_address; | |
0d53c4c4 | 253 | |
a738430d MK |
254 | /* Non-zero if base_address has been set. */ |
255 | int base_known; | |
256 | }; | |
c906108c | 257 | |
10b3939b DJ |
258 | /* Fixed size for the DIE hash table. */ |
259 | #ifndef REF_HASH_SIZE | |
260 | #define REF_HASH_SIZE 1021 | |
261 | #endif | |
262 | ||
e7c27a73 DJ |
263 | /* Internal state when decoding a particular compilation unit. */ |
264 | struct dwarf2_cu | |
265 | { | |
266 | /* The objfile containing this compilation unit. */ | |
267 | struct objfile *objfile; | |
268 | ||
269 | /* The header of the compilation unit. | |
270 | ||
271 | FIXME drow/2003-11-10: Some of the things from the comp_unit_head | |
f3dd6933 | 272 | should logically be moved to the dwarf2_cu structure. */ |
e7c27a73 | 273 | struct comp_unit_head header; |
e142c38c DJ |
274 | |
275 | struct function_range *first_fn, *last_fn, *cached_fn; | |
276 | ||
277 | /* The language we are debugging. */ | |
278 | enum language language; | |
279 | const struct language_defn *language_defn; | |
280 | ||
b0f35d58 DL |
281 | const char *producer; |
282 | ||
e142c38c DJ |
283 | /* The generic symbol table building routines have separate lists for |
284 | file scope symbols and all all other scopes (local scopes). So | |
285 | we need to select the right one to pass to add_symbol_to_list(). | |
286 | We do it by keeping a pointer to the correct list in list_in_scope. | |
287 | ||
288 | FIXME: The original dwarf code just treated the file scope as the | |
289 | first local scope, and all other local scopes as nested local | |
290 | scopes, and worked fine. Check to see if we really need to | |
291 | distinguish these in buildsym.c. */ | |
292 | struct pending **list_in_scope; | |
293 | ||
294 | /* Maintain an array of referenced fundamental types for the current | |
295 | compilation unit being read. For DWARF version 1, we have to construct | |
296 | the fundamental types on the fly, since no information about the | |
297 | fundamental types is supplied. Each such fundamental type is created by | |
298 | calling a language dependent routine to create the type, and then a | |
299 | pointer to that type is then placed in the array at the index specified | |
300 | by it's FT_<TYPENAME> value. The array has a fixed size set by the | |
301 | FT_NUM_MEMBERS compile time constant, which is the number of predefined | |
302 | fundamental types gdb knows how to construct. */ | |
303 | struct type *ftypes[FT_NUM_MEMBERS]; /* Fundamental types */ | |
f3dd6933 DJ |
304 | |
305 | /* DWARF abbreviation table associated with this compilation unit. */ | |
306 | struct abbrev_info **dwarf2_abbrevs; | |
307 | ||
308 | /* Storage for the abbrev table. */ | |
309 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
310 | |
311 | /* Hash table holding all the loaded partial DIEs. */ | |
312 | htab_t partial_dies; | |
313 | ||
314 | /* Storage for things with the same lifetime as this read-in compilation | |
315 | unit, including partial DIEs. */ | |
316 | struct obstack comp_unit_obstack; | |
317 | ||
ae038cb0 DJ |
318 | /* When multiple dwarf2_cu structures are living in memory, this field |
319 | chains them all together, so that they can be released efficiently. | |
320 | We will probably also want a generation counter so that most-recently-used | |
321 | compilation units are cached... */ | |
322 | struct dwarf2_per_cu_data *read_in_chain; | |
323 | ||
324 | /* Backchain to our per_cu entry if the tree has been built. */ | |
325 | struct dwarf2_per_cu_data *per_cu; | |
326 | ||
327 | /* How many compilation units ago was this CU last referenced? */ | |
328 | int last_used; | |
329 | ||
10b3939b DJ |
330 | /* A hash table of die offsets for following references. */ |
331 | struct die_info *die_ref_table[REF_HASH_SIZE]; | |
332 | ||
333 | /* Full DIEs if read in. */ | |
334 | struct die_info *dies; | |
335 | ||
336 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
337 | units referenced by this one. Only set during full symbol processing; | |
338 | partial symbol tables do not have dependencies. */ | |
339 | htab_t dependencies; | |
340 | ||
ae038cb0 DJ |
341 | /* Mark used when releasing cached dies. */ |
342 | unsigned int mark : 1; | |
343 | ||
344 | /* This flag will be set if this compilation unit might include | |
345 | inter-compilation-unit references. */ | |
346 | unsigned int has_form_ref_addr : 1; | |
347 | ||
72bf9492 DJ |
348 | /* This flag will be set if this compilation unit includes any |
349 | DW_TAG_namespace DIEs. If we know that there are explicit | |
350 | DIEs for namespaces, we don't need to try to infer them | |
351 | from mangled names. */ | |
352 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
353 | }; |
354 | ||
10b3939b DJ |
355 | /* Persistent data held for a compilation unit, even when not |
356 | processing it. We put a pointer to this structure in the | |
357 | read_symtab_private field of the psymtab. If we encounter | |
358 | inter-compilation-unit references, we also maintain a sorted | |
359 | list of all compilation units. */ | |
360 | ||
ae038cb0 DJ |
361 | struct dwarf2_per_cu_data |
362 | { | |
5afb4e99 | 363 | /* The start offset and length of this compilation unit. 2**30-1 |
ae038cb0 DJ |
364 | bytes should suffice to store the length of any compilation unit |
365 | - if it doesn't, GDB will fall over anyway. */ | |
366 | unsigned long offset; | |
5afb4e99 | 367 | unsigned long length : 30; |
ae038cb0 DJ |
368 | |
369 | /* Flag indicating this compilation unit will be read in before | |
370 | any of the current compilation units are processed. */ | |
371 | unsigned long queued : 1; | |
372 | ||
5afb4e99 DJ |
373 | /* This flag will be set if we need to load absolutely all DIEs |
374 | for this compilation unit, instead of just the ones we think | |
375 | are interesting. It gets set if we look for a DIE in the | |
376 | hash table and don't find it. */ | |
377 | unsigned int load_all_dies : 1; | |
378 | ||
ae038cb0 DJ |
379 | /* Set iff currently read in. */ |
380 | struct dwarf2_cu *cu; | |
1c379e20 DJ |
381 | |
382 | /* If full symbols for this CU have been read in, then this field | |
383 | holds a map of DIE offsets to types. It isn't always possible | |
384 | to reconstruct this information later, so we have to preserve | |
385 | it. */ | |
1c379e20 | 386 | htab_t type_hash; |
10b3939b DJ |
387 | |
388 | /* The partial symbol table associated with this compilation unit. */ | |
389 | struct partial_symtab *psymtab; | |
ae038cb0 DJ |
390 | }; |
391 | ||
debd256d JB |
392 | /* The line number information for a compilation unit (found in the |
393 | .debug_line section) begins with a "statement program header", | |
394 | which contains the following information. */ | |
395 | struct line_header | |
396 | { | |
397 | unsigned int total_length; | |
398 | unsigned short version; | |
399 | unsigned int header_length; | |
400 | unsigned char minimum_instruction_length; | |
401 | unsigned char default_is_stmt; | |
402 | int line_base; | |
403 | unsigned char line_range; | |
404 | unsigned char opcode_base; | |
405 | ||
406 | /* standard_opcode_lengths[i] is the number of operands for the | |
407 | standard opcode whose value is i. This means that | |
408 | standard_opcode_lengths[0] is unused, and the last meaningful | |
409 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
410 | unsigned char *standard_opcode_lengths; | |
411 | ||
412 | /* The include_directories table. NOTE! These strings are not | |
413 | allocated with xmalloc; instead, they are pointers into | |
414 | debug_line_buffer. If you try to free them, `free' will get | |
415 | indigestion. */ | |
416 | unsigned int num_include_dirs, include_dirs_size; | |
417 | char **include_dirs; | |
418 | ||
419 | /* The file_names table. NOTE! These strings are not allocated | |
420 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
421 | Don't try to free them directly. */ | |
422 | unsigned int num_file_names, file_names_size; | |
423 | struct file_entry | |
c906108c | 424 | { |
debd256d JB |
425 | char *name; |
426 | unsigned int dir_index; | |
427 | unsigned int mod_time; | |
428 | unsigned int length; | |
aaa75496 | 429 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
debd256d JB |
430 | } *file_names; |
431 | ||
432 | /* The start and end of the statement program following this | |
6502dd73 | 433 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 434 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 435 | }; |
c906108c SS |
436 | |
437 | /* When we construct a partial symbol table entry we only | |
438 | need this much information. */ | |
439 | struct partial_die_info | |
440 | { | |
72bf9492 | 441 | /* Offset of this DIE. */ |
c906108c | 442 | unsigned int offset; |
72bf9492 DJ |
443 | |
444 | /* DWARF-2 tag for this DIE. */ | |
445 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
446 | ||
447 | /* Language code associated with this DIE. This is only used | |
448 | for the compilation unit DIE. */ | |
449 | unsigned int language : 8; | |
450 | ||
451 | /* Assorted flags describing the data found in this DIE. */ | |
452 | unsigned int has_children : 1; | |
453 | unsigned int is_external : 1; | |
454 | unsigned int is_declaration : 1; | |
455 | unsigned int has_type : 1; | |
456 | unsigned int has_specification : 1; | |
aaa75496 | 457 | unsigned int has_stmt_list : 1; |
72bf9492 DJ |
458 | unsigned int has_pc_info : 1; |
459 | ||
460 | /* Flag set if the SCOPE field of this structure has been | |
461 | computed. */ | |
462 | unsigned int scope_set : 1; | |
463 | ||
464 | /* The name of this DIE. Normally the value of DW_AT_name, but | |
465 | sometimes DW_TAG_MIPS_linkage_name or a string computed in some | |
466 | other fashion. */ | |
c906108c | 467 | char *name; |
57c22c6c | 468 | char *dirname; |
72bf9492 DJ |
469 | |
470 | /* The scope to prepend to our children. This is generally | |
471 | allocated on the comp_unit_obstack, so will disappear | |
472 | when this compilation unit leaves the cache. */ | |
473 | char *scope; | |
474 | ||
475 | /* The location description associated with this DIE, if any. */ | |
476 | struct dwarf_block *locdesc; | |
477 | ||
478 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
479 | CORE_ADDR lowpc; |
480 | CORE_ADDR highpc; | |
72bf9492 DJ |
481 | |
482 | /* Pointer into the info_buffer pointing at the target of | |
483 | DW_AT_sibling, if any. */ | |
fe1b8b76 | 484 | gdb_byte *sibling; |
72bf9492 DJ |
485 | |
486 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
487 | DW_AT_specification (or DW_AT_abstract_origin or | |
488 | DW_AT_extension). */ | |
489 | unsigned int spec_offset; | |
490 | ||
aaa75496 JB |
491 | /* If HAS_STMT_LIST, the offset of the Line Number Information data. */ |
492 | unsigned int line_offset; | |
493 | ||
72bf9492 DJ |
494 | /* Pointers to this DIE's parent, first child, and next sibling, |
495 | if any. */ | |
496 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
497 | }; |
498 | ||
499 | /* This data structure holds the information of an abbrev. */ | |
500 | struct abbrev_info | |
501 | { | |
502 | unsigned int number; /* number identifying abbrev */ | |
503 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
504 | unsigned short has_children; /* boolean */ |
505 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
506 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
507 | struct abbrev_info *next; /* next in chain */ | |
508 | }; | |
509 | ||
510 | struct attr_abbrev | |
511 | { | |
512 | enum dwarf_attribute name; | |
513 | enum dwarf_form form; | |
514 | }; | |
515 | ||
516 | /* This data structure holds a complete die structure. */ | |
517 | struct die_info | |
518 | { | |
c5aa993b | 519 | enum dwarf_tag tag; /* Tag indicating type of die */ |
c5aa993b JM |
520 | unsigned int abbrev; /* Abbrev number */ |
521 | unsigned int offset; /* Offset in .debug_info section */ | |
522 | unsigned int num_attrs; /* Number of attributes */ | |
523 | struct attribute *attrs; /* An array of attributes */ | |
524 | struct die_info *next_ref; /* Next die in ref hash table */ | |
78ba4af6 JB |
525 | |
526 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
527 | points to this die's parent; CHILD points to the first child of | |
528 | this node; and all the children of a given node are chained | |
529 | together via their SIBLING fields, terminated by a die whose | |
530 | tag is zero. */ | |
639d11d3 DC |
531 | struct die_info *child; /* Its first child, if any. */ |
532 | struct die_info *sibling; /* Its next sibling, if any. */ | |
533 | struct die_info *parent; /* Its parent, if any. */ | |
78ba4af6 | 534 | |
c5aa993b | 535 | struct type *type; /* Cached type information */ |
c906108c SS |
536 | }; |
537 | ||
538 | /* Attributes have a name and a value */ | |
539 | struct attribute | |
540 | { | |
541 | enum dwarf_attribute name; | |
542 | enum dwarf_form form; | |
543 | union | |
544 | { | |
545 | char *str; | |
546 | struct dwarf_block *blk; | |
ce5d95e1 JB |
547 | unsigned long unsnd; |
548 | long int snd; | |
c906108c SS |
549 | CORE_ADDR addr; |
550 | } | |
551 | u; | |
552 | }; | |
553 | ||
5fb290d7 DJ |
554 | struct function_range |
555 | { | |
556 | const char *name; | |
557 | CORE_ADDR lowpc, highpc; | |
558 | int seen_line; | |
559 | struct function_range *next; | |
560 | }; | |
561 | ||
c906108c SS |
562 | /* Get at parts of an attribute structure */ |
563 | ||
564 | #define DW_STRING(attr) ((attr)->u.str) | |
565 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
566 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
567 | #define DW_SND(attr) ((attr)->u.snd) | |
568 | #define DW_ADDR(attr) ((attr)->u.addr) | |
569 | ||
570 | /* Blocks are a bunch of untyped bytes. */ | |
571 | struct dwarf_block | |
572 | { | |
573 | unsigned int size; | |
fe1b8b76 | 574 | gdb_byte *data; |
c906108c SS |
575 | }; |
576 | ||
c906108c SS |
577 | #ifndef ATTR_ALLOC_CHUNK |
578 | #define ATTR_ALLOC_CHUNK 4 | |
579 | #endif | |
580 | ||
c906108c SS |
581 | /* Allocate fields for structs, unions and enums in this size. */ |
582 | #ifndef DW_FIELD_ALLOC_CHUNK | |
583 | #define DW_FIELD_ALLOC_CHUNK 4 | |
584 | #endif | |
585 | ||
c906108c SS |
586 | /* A zeroed version of a partial die for initialization purposes. */ |
587 | static struct partial_die_info zeroed_partial_die; | |
588 | ||
c906108c SS |
589 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
590 | but this would require a corresponding change in unpack_field_as_long | |
591 | and friends. */ | |
592 | static int bits_per_byte = 8; | |
593 | ||
594 | /* The routines that read and process dies for a C struct or C++ class | |
595 | pass lists of data member fields and lists of member function fields | |
596 | in an instance of a field_info structure, as defined below. */ | |
597 | struct field_info | |
c5aa993b JM |
598 | { |
599 | /* List of data member and baseclasses fields. */ | |
600 | struct nextfield | |
601 | { | |
602 | struct nextfield *next; | |
603 | int accessibility; | |
604 | int virtuality; | |
605 | struct field field; | |
606 | } | |
607 | *fields; | |
c906108c | 608 | |
c5aa993b JM |
609 | /* Number of fields. */ |
610 | int nfields; | |
c906108c | 611 | |
c5aa993b JM |
612 | /* Number of baseclasses. */ |
613 | int nbaseclasses; | |
c906108c | 614 | |
c5aa993b JM |
615 | /* Set if the accesibility of one of the fields is not public. */ |
616 | int non_public_fields; | |
c906108c | 617 | |
c5aa993b JM |
618 | /* Member function fields array, entries are allocated in the order they |
619 | are encountered in the object file. */ | |
620 | struct nextfnfield | |
621 | { | |
622 | struct nextfnfield *next; | |
623 | struct fn_field fnfield; | |
624 | } | |
625 | *fnfields; | |
c906108c | 626 | |
c5aa993b JM |
627 | /* Member function fieldlist array, contains name of possibly overloaded |
628 | member function, number of overloaded member functions and a pointer | |
629 | to the head of the member function field chain. */ | |
630 | struct fnfieldlist | |
631 | { | |
632 | char *name; | |
633 | int length; | |
634 | struct nextfnfield *head; | |
635 | } | |
636 | *fnfieldlists; | |
c906108c | 637 | |
c5aa993b JM |
638 | /* Number of entries in the fnfieldlists array. */ |
639 | int nfnfields; | |
640 | }; | |
c906108c | 641 | |
10b3939b DJ |
642 | /* One item on the queue of compilation units to read in full symbols |
643 | for. */ | |
644 | struct dwarf2_queue_item | |
645 | { | |
646 | struct dwarf2_per_cu_data *per_cu; | |
647 | struct dwarf2_queue_item *next; | |
648 | }; | |
649 | ||
650 | /* The current queue. */ | |
651 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
652 | ||
ae038cb0 DJ |
653 | /* Loaded secondary compilation units are kept in memory until they |
654 | have not been referenced for the processing of this many | |
655 | compilation units. Set this to zero to disable caching. Cache | |
656 | sizes of up to at least twenty will improve startup time for | |
657 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
658 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
659 | static void |
660 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
661 | struct cmd_list_element *c, const char *value) | |
662 | { | |
663 | fprintf_filtered (file, _("\ | |
664 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
665 | value); | |
666 | } | |
667 | ||
ae038cb0 | 668 | |
c906108c SS |
669 | /* Various complaints about symbol reading that don't abort the process */ |
670 | ||
4d3c2250 KB |
671 | static void |
672 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 673 | { |
4d3c2250 | 674 | complaint (&symfile_complaints, |
e2e0b3e5 | 675 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
676 | } |
677 | ||
678 | static void | |
679 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 680 | { |
e2e0b3e5 | 681 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
682 | } |
683 | ||
4d3c2250 KB |
684 | static void |
685 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
686 | int arg3) | |
2e276125 | 687 | { |
4d3c2250 | 688 | complaint (&symfile_complaints, |
e2e0b3e5 | 689 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
690 | arg2, arg3); |
691 | } | |
692 | ||
693 | static void | |
694 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 695 | { |
4d3c2250 | 696 | complaint (&symfile_complaints, |
e2e0b3e5 | 697 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
698 | } |
699 | ||
700 | static void | |
701 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 702 | { |
4d3c2250 | 703 | complaint (&symfile_complaints, |
e2e0b3e5 | 704 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
705 | arg1); |
706 | } | |
707 | ||
708 | static void | |
709 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 710 | { |
4d3c2250 | 711 | complaint (&symfile_complaints, |
e2e0b3e5 | 712 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 713 | } |
c906108c | 714 | |
c906108c SS |
715 | /* local function prototypes */ |
716 | ||
4efb68b1 | 717 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
718 | |
719 | #if 0 | |
a14ed312 | 720 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
721 | #endif |
722 | ||
aaa75496 JB |
723 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
724 | struct objfile *); | |
725 | ||
726 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
727 | struct partial_die_info *, | |
728 | struct partial_symtab *); | |
729 | ||
a14ed312 | 730 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 731 | |
72bf9492 DJ |
732 | static void scan_partial_symbols (struct partial_die_info *, |
733 | CORE_ADDR *, CORE_ADDR *, | |
734 | struct dwarf2_cu *); | |
c906108c | 735 | |
72bf9492 DJ |
736 | static void add_partial_symbol (struct partial_die_info *, |
737 | struct dwarf2_cu *); | |
63d06c5c | 738 | |
72bf9492 | 739 | static int pdi_needs_namespace (enum dwarf_tag tag); |
91c24f0a | 740 | |
72bf9492 DJ |
741 | static void add_partial_namespace (struct partial_die_info *pdi, |
742 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
743 | struct dwarf2_cu *cu); | |
63d06c5c | 744 | |
72bf9492 DJ |
745 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
746 | struct dwarf2_cu *cu); | |
91c24f0a | 747 | |
fe1b8b76 JB |
748 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
749 | gdb_byte *info_ptr, | |
750 | bfd *abfd, | |
751 | struct dwarf2_cu *cu); | |
91c24f0a | 752 | |
a14ed312 | 753 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 754 | |
a14ed312 | 755 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 756 | |
fe1b8b76 | 757 | gdb_byte *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 758 | |
e7c27a73 | 759 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 760 | |
f3dd6933 | 761 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 762 | |
fe1b8b76 | 763 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 764 | struct dwarf2_cu *); |
72bf9492 | 765 | |
57349743 | 766 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 767 | struct dwarf2_cu *); |
c906108c | 768 | |
fe1b8b76 | 769 | static struct partial_die_info *load_partial_dies (bfd *, gdb_byte *, int, |
72bf9492 DJ |
770 | struct dwarf2_cu *); |
771 | ||
fe1b8b76 JB |
772 | static gdb_byte *read_partial_die (struct partial_die_info *, |
773 | struct abbrev_info *abbrev, unsigned int, | |
774 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 775 | |
72bf9492 | 776 | static struct partial_die_info *find_partial_die (unsigned long, |
10b3939b | 777 | struct dwarf2_cu *); |
72bf9492 DJ |
778 | |
779 | static void fixup_partial_die (struct partial_die_info *, | |
780 | struct dwarf2_cu *); | |
781 | ||
fe1b8b76 JB |
782 | static gdb_byte *read_full_die (struct die_info **, bfd *, gdb_byte *, |
783 | struct dwarf2_cu *, int *); | |
c906108c | 784 | |
fe1b8b76 JB |
785 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
786 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 787 | |
fe1b8b76 JB |
788 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
789 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 790 | |
fe1b8b76 | 791 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 792 | |
fe1b8b76 | 793 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 794 | |
fe1b8b76 | 795 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 796 | |
fe1b8b76 | 797 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 798 | |
fe1b8b76 | 799 | static unsigned long read_8_bytes (bfd *, gdb_byte *); |
c906108c | 800 | |
fe1b8b76 | 801 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 802 | unsigned int *); |
c906108c | 803 | |
fe1b8b76 | 804 | static LONGEST read_initial_length (bfd *, gdb_byte *, |
891d2f0b | 805 | struct comp_unit_head *, unsigned int *); |
613e1657 | 806 | |
fe1b8b76 | 807 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
891d2f0b | 808 | unsigned int *); |
613e1657 | 809 | |
fe1b8b76 | 810 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 811 | |
fe1b8b76 | 812 | static char *read_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 813 | |
fe1b8b76 JB |
814 | static char *read_indirect_string (bfd *, gdb_byte *, |
815 | const struct comp_unit_head *, | |
816 | unsigned int *); | |
4bdf3d34 | 817 | |
fe1b8b76 | 818 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 819 | |
fe1b8b76 | 820 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 821 | |
fe1b8b76 | 822 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 823 | |
e142c38c | 824 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 825 | |
e142c38c DJ |
826 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
827 | struct dwarf2_cu *); | |
c906108c | 828 | |
05cf31d1 JB |
829 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
830 | struct dwarf2_cu *cu); | |
831 | ||
e142c38c | 832 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 833 | |
e142c38c DJ |
834 | static struct die_info *die_specification (struct die_info *die, |
835 | struct dwarf2_cu *); | |
63d06c5c | 836 | |
debd256d JB |
837 | static void free_line_header (struct line_header *lh); |
838 | ||
aaa75496 JB |
839 | static void add_file_name (struct line_header *, char *, unsigned int, |
840 | unsigned int, unsigned int); | |
841 | ||
debd256d JB |
842 | static struct line_header *(dwarf_decode_line_header |
843 | (unsigned int offset, | |
e7c27a73 | 844 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
845 | |
846 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 847 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 848 | |
4f1520fb | 849 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 850 | |
a14ed312 | 851 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 852 | struct dwarf2_cu *); |
c906108c | 853 | |
a14ed312 | 854 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 855 | struct dwarf2_cu *); |
c906108c | 856 | |
2df3850c JM |
857 | static void dwarf2_const_value_data (struct attribute *attr, |
858 | struct symbol *sym, | |
859 | int bits); | |
860 | ||
e7c27a73 | 861 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 862 | |
e7c27a73 DJ |
863 | static struct type *die_containing_type (struct die_info *, |
864 | struct dwarf2_cu *); | |
c906108c | 865 | |
e7c27a73 | 866 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 867 | |
e7c27a73 | 868 | static void read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 869 | |
086ed43d | 870 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 871 | |
fe1b8b76 JB |
872 | static char *typename_concat (struct obstack *, |
873 | const char *prefix, | |
874 | const char *suffix, | |
987504bb | 875 | struct dwarf2_cu *); |
63d06c5c | 876 | |
e7c27a73 | 877 | static void read_typedef (struct die_info *, struct dwarf2_cu *); |
c906108c | 878 | |
e7c27a73 | 879 | static void read_base_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 880 | |
a02abb62 JB |
881 | static void read_subrange_type (struct die_info *die, struct dwarf2_cu *cu); |
882 | ||
e7c27a73 | 883 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 884 | |
e7c27a73 | 885 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 886 | |
e7c27a73 | 887 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 888 | |
a14ed312 | 889 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 890 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 891 | |
fae299cd DC |
892 | static void get_scope_pc_bounds (struct die_info *, |
893 | CORE_ADDR *, CORE_ADDR *, | |
894 | struct dwarf2_cu *); | |
895 | ||
a14ed312 | 896 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 897 | struct dwarf2_cu *); |
c906108c | 898 | |
a14ed312 | 899 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 900 | struct type *, struct dwarf2_cu *); |
c906108c | 901 | |
a14ed312 | 902 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 903 | struct die_info *, struct type *, |
e7c27a73 | 904 | struct dwarf2_cu *); |
c906108c | 905 | |
a14ed312 | 906 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 907 | struct type *, struct dwarf2_cu *); |
c906108c | 908 | |
134d01f1 DJ |
909 | static void read_structure_type (struct die_info *, struct dwarf2_cu *); |
910 | ||
911 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 912 | |
8176b9b8 DC |
913 | static char *determine_class_name (struct die_info *die, struct dwarf2_cu *cu); |
914 | ||
e7c27a73 | 915 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 916 | |
e7c27a73 | 917 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 918 | |
38d518c9 | 919 | static const char *namespace_name (struct die_info *die, |
e142c38c | 920 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 921 | |
134d01f1 DJ |
922 | static void read_enumeration_type (struct die_info *, struct dwarf2_cu *); |
923 | ||
924 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 925 | |
e7c27a73 | 926 | static struct type *dwarf_base_type (int, int, struct dwarf2_cu *); |
c906108c | 927 | |
e7c27a73 | 928 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 929 | |
e7c27a73 | 930 | static void read_array_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 931 | |
7ca2d3a3 DL |
932 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
933 | struct dwarf2_cu *); | |
934 | ||
e7c27a73 | 935 | static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 936 | |
e7c27a73 DJ |
937 | static void read_tag_ptr_to_member_type (struct die_info *, |
938 | struct dwarf2_cu *); | |
c906108c | 939 | |
e7c27a73 | 940 | static void read_tag_reference_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 941 | |
e7c27a73 | 942 | static void read_tag_const_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 943 | |
e7c27a73 | 944 | static void read_tag_volatile_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 945 | |
e7c27a73 | 946 | static void read_tag_string_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 947 | |
e7c27a73 | 948 | static void read_subroutine_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 949 | |
fe1b8b76 | 950 | static struct die_info *read_comp_unit (gdb_byte *, bfd *, struct dwarf2_cu *); |
c906108c | 951 | |
fe1b8b76 | 952 | static struct die_info *read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 953 | struct dwarf2_cu *, |
fe1b8b76 | 954 | gdb_byte **new_info_ptr, |
639d11d3 DC |
955 | struct die_info *parent); |
956 | ||
fe1b8b76 | 957 | static struct die_info *read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 958 | struct dwarf2_cu *, |
fe1b8b76 | 959 | gdb_byte **new_info_ptr, |
639d11d3 DC |
960 | struct die_info *parent); |
961 | ||
a14ed312 | 962 | static void free_die_list (struct die_info *); |
c906108c | 963 | |
e7c27a73 | 964 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 965 | |
e142c38c | 966 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 967 | |
e142c38c | 968 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 969 | |
e142c38c DJ |
970 | static struct die_info *dwarf2_extension (struct die_info *die, |
971 | struct dwarf2_cu *); | |
9219021c | 972 | |
a14ed312 | 973 | static char *dwarf_tag_name (unsigned int); |
c906108c | 974 | |
a14ed312 | 975 | static char *dwarf_attr_name (unsigned int); |
c906108c | 976 | |
a14ed312 | 977 | static char *dwarf_form_name (unsigned int); |
c906108c | 978 | |
a14ed312 | 979 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 980 | |
a14ed312 | 981 | static char *dwarf_bool_name (unsigned int); |
c906108c | 982 | |
a14ed312 | 983 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
984 | |
985 | #if 0 | |
a14ed312 | 986 | static char *dwarf_cfi_name (unsigned int); |
c906108c | 987 | |
a14ed312 | 988 | struct die_info *copy_die (struct die_info *); |
c906108c SS |
989 | #endif |
990 | ||
f9aca02d | 991 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 992 | |
f9aca02d | 993 | static void dump_die (struct die_info *); |
c906108c | 994 | |
f9aca02d | 995 | static void dump_die_list (struct die_info *); |
c906108c | 996 | |
10b3939b DJ |
997 | static void store_in_ref_table (unsigned int, struct die_info *, |
998 | struct dwarf2_cu *); | |
c906108c | 999 | |
e142c38c DJ |
1000 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
1001 | struct dwarf2_cu *); | |
c906108c | 1002 | |
a02abb62 JB |
1003 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
1004 | ||
10b3939b DJ |
1005 | static struct die_info *follow_die_ref (struct die_info *, |
1006 | struct attribute *, | |
1007 | struct dwarf2_cu *); | |
c906108c | 1008 | |
e142c38c DJ |
1009 | static struct type *dwarf2_fundamental_type (struct objfile *, int, |
1010 | struct dwarf2_cu *); | |
c906108c SS |
1011 | |
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 | ||
4c2df51b DJ |
1030 | static void |
1031 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 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 | ||
10b3939b DJ |
1065 | static struct dwarf2_cu *load_full_comp_unit (struct dwarf2_per_cu_data *); |
1066 | ||
1067 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1068 | ||
1069 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1070 | struct dwarf2_per_cu_data *); | |
1071 | ||
ae038cb0 DJ |
1072 | static void dwarf2_mark (struct dwarf2_cu *); |
1073 | ||
1074 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1075 | ||
72019c9c GM |
1076 | static void read_set_type (struct die_info *, struct dwarf2_cu *); |
1077 | ||
1078 | ||
c906108c SS |
1079 | /* Try to locate the sections we need for DWARF 2 debugging |
1080 | information and return true if we have enough to do something. */ | |
1081 | ||
1082 | int | |
6502dd73 | 1083 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1084 | { |
6502dd73 DJ |
1085 | struct dwarf2_per_objfile *data; |
1086 | ||
1087 | /* Initialize per-objfile state. */ | |
1088 | data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
1089 | memset (data, 0, sizeof (*data)); | |
1090 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1091 | dwarf2_per_objfile = data; | |
1092 | ||
188dd5d6 DJ |
1093 | dwarf_info_section = 0; |
1094 | dwarf_abbrev_section = 0; | |
1095 | dwarf_line_section = 0; | |
1096 | dwarf_str_section = 0; | |
1097 | dwarf_macinfo_section = 0; | |
1098 | dwarf_frame_section = 0; | |
1099 | dwarf_eh_frame_section = 0; | |
1100 | dwarf_ranges_section = 0; | |
1101 | dwarf_loc_section = 0; | |
af34e669 | 1102 | |
6502dd73 | 1103 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 1104 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
1105 | } |
1106 | ||
1107 | /* This function is mapped across the sections and remembers the | |
1108 | offset and size of each of the debugging sections we are interested | |
1109 | in. */ | |
1110 | ||
1111 | static void | |
4efb68b1 | 1112 | dwarf2_locate_sections (bfd *ignore_abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1113 | { |
6314a349 | 1114 | if (strcmp (sectp->name, INFO_SECTION) == 0) |
c906108c | 1115 | { |
2c500098 | 1116 | dwarf2_per_objfile->info_size = bfd_get_section_size (sectp); |
086df311 | 1117 | dwarf_info_section = sectp; |
c906108c | 1118 | } |
6314a349 | 1119 | else if (strcmp (sectp->name, ABBREV_SECTION) == 0) |
c906108c | 1120 | { |
2c500098 | 1121 | dwarf2_per_objfile->abbrev_size = bfd_get_section_size (sectp); |
086df311 | 1122 | dwarf_abbrev_section = sectp; |
c906108c | 1123 | } |
6314a349 | 1124 | else if (strcmp (sectp->name, LINE_SECTION) == 0) |
c906108c | 1125 | { |
2c500098 | 1126 | dwarf2_per_objfile->line_size = bfd_get_section_size (sectp); |
086df311 | 1127 | dwarf_line_section = sectp; |
c906108c | 1128 | } |
6314a349 | 1129 | else if (strcmp (sectp->name, PUBNAMES_SECTION) == 0) |
c906108c | 1130 | { |
2c500098 | 1131 | dwarf2_per_objfile->pubnames_size = bfd_get_section_size (sectp); |
086df311 | 1132 | dwarf_pubnames_section = sectp; |
c906108c | 1133 | } |
6314a349 | 1134 | else if (strcmp (sectp->name, ARANGES_SECTION) == 0) |
c906108c | 1135 | { |
2c500098 | 1136 | dwarf2_per_objfile->aranges_size = bfd_get_section_size (sectp); |
086df311 | 1137 | dwarf_aranges_section = sectp; |
c906108c | 1138 | } |
6314a349 | 1139 | else if (strcmp (sectp->name, LOC_SECTION) == 0) |
c906108c | 1140 | { |
2c500098 | 1141 | dwarf2_per_objfile->loc_size = bfd_get_section_size (sectp); |
086df311 | 1142 | dwarf_loc_section = sectp; |
c906108c | 1143 | } |
6314a349 | 1144 | else if (strcmp (sectp->name, MACINFO_SECTION) == 0) |
c906108c | 1145 | { |
2c500098 | 1146 | dwarf2_per_objfile->macinfo_size = bfd_get_section_size (sectp); |
0cf824c9 | 1147 | dwarf_macinfo_section = sectp; |
c906108c | 1148 | } |
6314a349 | 1149 | else if (strcmp (sectp->name, STR_SECTION) == 0) |
c906108c | 1150 | { |
2c500098 | 1151 | dwarf2_per_objfile->str_size = bfd_get_section_size (sectp); |
086df311 | 1152 | dwarf_str_section = sectp; |
c906108c | 1153 | } |
6314a349 | 1154 | else if (strcmp (sectp->name, FRAME_SECTION) == 0) |
b6af0555 | 1155 | { |
2c500098 | 1156 | dwarf2_per_objfile->frame_size = bfd_get_section_size (sectp); |
086df311 | 1157 | dwarf_frame_section = sectp; |
b6af0555 | 1158 | } |
6314a349 | 1159 | else if (strcmp (sectp->name, EH_FRAME_SECTION) == 0) |
b6af0555 | 1160 | { |
3799ccc6 EZ |
1161 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1162 | if (aflag & SEC_HAS_CONTENTS) | |
1163 | { | |
2c500098 | 1164 | dwarf2_per_objfile->eh_frame_size = bfd_get_section_size (sectp); |
3799ccc6 EZ |
1165 | dwarf_eh_frame_section = sectp; |
1166 | } | |
b6af0555 | 1167 | } |
6314a349 | 1168 | else if (strcmp (sectp->name, RANGES_SECTION) == 0) |
af34e669 | 1169 | { |
2c500098 | 1170 | dwarf2_per_objfile->ranges_size = bfd_get_section_size (sectp); |
6f10aeb1 | 1171 | dwarf_ranges_section = sectp; |
af34e669 | 1172 | } |
c906108c SS |
1173 | } |
1174 | ||
1175 | /* Build a partial symbol table. */ | |
1176 | ||
1177 | void | |
fba45db2 | 1178 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c | 1179 | { |
c906108c SS |
1180 | /* We definitely need the .debug_info and .debug_abbrev sections */ |
1181 | ||
6502dd73 DJ |
1182 | dwarf2_per_objfile->info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1183 | dwarf2_per_objfile->abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
188dd5d6 DJ |
1184 | |
1185 | if (dwarf_line_section) | |
6502dd73 | 1186 | dwarf2_per_objfile->line_buffer = dwarf2_read_section (objfile, dwarf_line_section); |
41ff2da1 | 1187 | else |
6502dd73 | 1188 | dwarf2_per_objfile->line_buffer = NULL; |
c906108c | 1189 | |
188dd5d6 | 1190 | if (dwarf_str_section) |
6502dd73 | 1191 | dwarf2_per_objfile->str_buffer = dwarf2_read_section (objfile, dwarf_str_section); |
4bdf3d34 | 1192 | else |
6502dd73 | 1193 | dwarf2_per_objfile->str_buffer = NULL; |
4bdf3d34 | 1194 | |
188dd5d6 | 1195 | if (dwarf_macinfo_section) |
6502dd73 | 1196 | dwarf2_per_objfile->macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1197 | dwarf_macinfo_section); |
2e276125 | 1198 | else |
6502dd73 | 1199 | dwarf2_per_objfile->macinfo_buffer = NULL; |
2e276125 | 1200 | |
188dd5d6 | 1201 | if (dwarf_ranges_section) |
6502dd73 | 1202 | dwarf2_per_objfile->ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); |
af34e669 | 1203 | else |
6502dd73 | 1204 | dwarf2_per_objfile->ranges_buffer = NULL; |
af34e669 | 1205 | |
188dd5d6 | 1206 | if (dwarf_loc_section) |
6502dd73 | 1207 | dwarf2_per_objfile->loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); |
0d53c4c4 | 1208 | else |
6502dd73 | 1209 | dwarf2_per_objfile->loc_buffer = NULL; |
0d53c4c4 | 1210 | |
ef96bde8 EZ |
1211 | if (mainline |
1212 | || (objfile->global_psymbols.size == 0 | |
1213 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1214 | { |
1215 | init_psymbol_list (objfile, 1024); | |
1216 | } | |
1217 | ||
1218 | #if 0 | |
1219 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1220 | { | |
d4f3574e | 1221 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1222 | .debug_pubnames sections */ |
1223 | ||
d4f3574e | 1224 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1225 | } |
1226 | else | |
1227 | #endif | |
1228 | /* only test this case for now */ | |
c5aa993b | 1229 | { |
c906108c | 1230 | /* In this case we have to work a bit harder */ |
d4f3574e | 1231 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1232 | } |
1233 | } | |
1234 | ||
1235 | #if 0 | |
1236 | /* Build the partial symbol table from the information in the | |
1237 | .debug_pubnames and .debug_aranges sections. */ | |
1238 | ||
1239 | static void | |
fba45db2 | 1240 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1241 | { |
1242 | bfd *abfd = objfile->obfd; | |
1243 | char *aranges_buffer, *pubnames_buffer; | |
1244 | char *aranges_ptr, *pubnames_ptr; | |
1245 | unsigned int entry_length, version, info_offset, info_size; | |
1246 | ||
1247 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1248 | dwarf_pubnames_section); |
c906108c | 1249 | pubnames_ptr = pubnames_buffer; |
6502dd73 | 1250 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames_size) |
c906108c | 1251 | { |
613e1657 | 1252 | struct comp_unit_head cu_header; |
891d2f0b | 1253 | unsigned int bytes_read; |
613e1657 KB |
1254 | |
1255 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
891d2f0b | 1256 | &bytes_read); |
613e1657 | 1257 | pubnames_ptr += bytes_read; |
c906108c SS |
1258 | version = read_1_byte (abfd, pubnames_ptr); |
1259 | pubnames_ptr += 1; | |
1260 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1261 | pubnames_ptr += 4; | |
1262 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1263 | pubnames_ptr += 4; | |
1264 | } | |
1265 | ||
1266 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1267 | dwarf_aranges_section); |
c906108c SS |
1268 | |
1269 | } | |
1270 | #endif | |
1271 | ||
107d2387 | 1272 | /* Read in the comp unit header information from the debug_info at |
917c78fc | 1273 | info_ptr. */ |
107d2387 | 1274 | |
fe1b8b76 | 1275 | static gdb_byte * |
107d2387 | 1276 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 1277 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
1278 | { |
1279 | int signed_addr; | |
891d2f0b | 1280 | unsigned int bytes_read; |
613e1657 KB |
1281 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, |
1282 | &bytes_read); | |
1283 | info_ptr += bytes_read; | |
107d2387 AC |
1284 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1285 | info_ptr += 2; | |
613e1657 KB |
1286 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1287 | &bytes_read); | |
1288 | info_ptr += bytes_read; | |
107d2387 AC |
1289 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1290 | info_ptr += 1; | |
1291 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1292 | if (signed_addr < 0) | |
8e65ff28 | 1293 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1294 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 AC |
1295 | cu_header->signed_addr_p = signed_addr; |
1296 | return info_ptr; | |
1297 | } | |
1298 | ||
fe1b8b76 JB |
1299 | static gdb_byte * |
1300 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
72bf9492 DJ |
1301 | bfd *abfd) |
1302 | { | |
fe1b8b76 | 1303 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
1304 | |
1305 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1306 | ||
2b949cb6 | 1307 | if (header->version != 2 && header->version != 3) |
8a3fe4f8 AC |
1308 | error (_("Dwarf Error: wrong version in compilation unit header " |
1309 | "(is %d, should be %d) [in module %s]"), header->version, | |
72bf9492 DJ |
1310 | 2, bfd_get_filename (abfd)); |
1311 | ||
1312 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev_size) | |
8a3fe4f8 AC |
1313 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
1314 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 DJ |
1315 | (long) header->abbrev_offset, |
1316 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1317 | bfd_get_filename (abfd)); | |
1318 | ||
1319 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
1320 | > dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
8a3fe4f8 AC |
1321 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
1322 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 DJ |
1323 | (long) header->length, |
1324 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1325 | bfd_get_filename (abfd)); | |
1326 | ||
1327 | return info_ptr; | |
1328 | } | |
1329 | ||
aaa75496 JB |
1330 | /* Allocate a new partial symtab for file named NAME and mark this new |
1331 | partial symtab as being an include of PST. */ | |
1332 | ||
1333 | static void | |
1334 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1335 | struct objfile *objfile) | |
1336 | { | |
1337 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1338 | ||
1339 | subpst->section_offsets = pst->section_offsets; | |
1340 | subpst->textlow = 0; | |
1341 | subpst->texthigh = 0; | |
1342 | ||
1343 | subpst->dependencies = (struct partial_symtab **) | |
1344 | obstack_alloc (&objfile->objfile_obstack, | |
1345 | sizeof (struct partial_symtab *)); | |
1346 | subpst->dependencies[0] = pst; | |
1347 | subpst->number_of_dependencies = 1; | |
1348 | ||
1349 | subpst->globals_offset = 0; | |
1350 | subpst->n_global_syms = 0; | |
1351 | subpst->statics_offset = 0; | |
1352 | subpst->n_static_syms = 0; | |
1353 | subpst->symtab = NULL; | |
1354 | subpst->read_symtab = pst->read_symtab; | |
1355 | subpst->readin = 0; | |
1356 | ||
1357 | /* No private part is necessary for include psymtabs. This property | |
1358 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1359 | the regular ones. */ |
58a9656e | 1360 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1361 | } |
1362 | ||
1363 | /* Read the Line Number Program data and extract the list of files | |
1364 | included by the source file represented by PST. Build an include | |
1365 | partial symtab for each of these included files. | |
1366 | ||
1367 | This procedure assumes that there *is* a Line Number Program in | |
1368 | the given CU. Callers should check that PDI->HAS_STMT_LIST is set | |
1369 | before calling this procedure. */ | |
1370 | ||
1371 | static void | |
1372 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
1373 | struct partial_die_info *pdi, | |
1374 | struct partial_symtab *pst) | |
1375 | { | |
1376 | struct objfile *objfile = cu->objfile; | |
1377 | bfd *abfd = objfile->obfd; | |
1378 | struct line_header *lh; | |
1379 | ||
1380 | lh = dwarf_decode_line_header (pdi->line_offset, abfd, cu); | |
1381 | if (lh == NULL) | |
1382 | return; /* No linetable, so no includes. */ | |
1383 | ||
1384 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1385 | ||
1386 | free_line_header (lh); | |
1387 | } | |
1388 | ||
1389 | ||
c906108c SS |
1390 | /* Build the partial symbol table by doing a quick pass through the |
1391 | .debug_info and .debug_abbrev sections. */ | |
1392 | ||
1393 | static void | |
fba45db2 | 1394 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1395 | { |
1396 | /* Instead of reading this into a big buffer, we should probably use | |
1397 | mmap() on architectures that support it. (FIXME) */ | |
1398 | bfd *abfd = objfile->obfd; | |
fe1b8b76 JB |
1399 | gdb_byte *info_ptr; |
1400 | gdb_byte *beg_of_comp_unit; | |
c906108c SS |
1401 | struct partial_die_info comp_unit_die; |
1402 | struct partial_symtab *pst; | |
ae038cb0 | 1403 | struct cleanup *back_to; |
e142c38c | 1404 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1405 | |
6502dd73 | 1406 | info_ptr = dwarf2_per_objfile->info_buffer; |
c906108c | 1407 | |
ae038cb0 DJ |
1408 | /* Any cached compilation units will be linked by the per-objfile |
1409 | read_in_chain. Make sure to free them when we're done. */ | |
1410 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
1411 | ||
10b3939b DJ |
1412 | create_all_comp_units (objfile); |
1413 | ||
6502dd73 | 1414 | /* Since the objects we're extracting from .debug_info vary in |
af703f96 | 1415 | length, only the individual functions to extract them (like |
72bf9492 | 1416 | read_comp_unit_head and load_partial_die) can really know whether |
af703f96 JB |
1417 | the buffer is large enough to hold another complete object. |
1418 | ||
6502dd73 DJ |
1419 | At the moment, they don't actually check that. If .debug_info |
1420 | holds just one extra byte after the last compilation unit's dies, | |
1421 | then read_comp_unit_head will happily read off the end of the | |
1422 | buffer. read_partial_die is similarly casual. Those functions | |
1423 | should be fixed. | |
af703f96 JB |
1424 | |
1425 | For this loop condition, simply checking whether there's any data | |
1426 | left at all should be sufficient. */ | |
6502dd73 DJ |
1427 | while (info_ptr < (dwarf2_per_objfile->info_buffer |
1428 | + dwarf2_per_objfile->info_size)) | |
c906108c | 1429 | { |
f3dd6933 | 1430 | struct cleanup *back_to_inner; |
e7c27a73 | 1431 | struct dwarf2_cu cu; |
72bf9492 DJ |
1432 | struct abbrev_info *abbrev; |
1433 | unsigned int bytes_read; | |
1434 | struct dwarf2_per_cu_data *this_cu; | |
1435 | ||
c906108c | 1436 | beg_of_comp_unit = info_ptr; |
c906108c | 1437 | |
72bf9492 DJ |
1438 | memset (&cu, 0, sizeof (cu)); |
1439 | ||
1440 | obstack_init (&cu.comp_unit_obstack); | |
1441 | ||
1442 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); | |
1443 | ||
e7c27a73 | 1444 | cu.objfile = objfile; |
72bf9492 | 1445 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, abfd); |
e7c27a73 | 1446 | |
57349743 | 1447 | /* Complete the cu_header */ |
6502dd73 | 1448 | cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
e7c27a73 DJ |
1449 | cu.header.first_die_ptr = info_ptr; |
1450 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1451 | |
e142c38c DJ |
1452 | cu.list_in_scope = &file_symbols; |
1453 | ||
c906108c | 1454 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1455 | dwarf2_read_abbrevs (abfd, &cu); |
72bf9492 | 1456 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1457 | |
10b3939b | 1458 | this_cu = dwarf2_find_comp_unit (cu.header.offset, objfile); |
ae038cb0 | 1459 | |
c906108c | 1460 | /* Read the compilation unit die */ |
72bf9492 DJ |
1461 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, &cu); |
1462 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1463 | abfd, info_ptr, &cu); | |
c906108c SS |
1464 | |
1465 | /* Set the language we're debugging */ | |
e142c38c | 1466 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1467 | |
1468 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1469 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1470 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1471 | comp_unit_die.lowpc, |
1472 | objfile->global_psymbols.next, | |
1473 | objfile->static_psymbols.next); | |
1474 | ||
ae038cb0 DJ |
1475 | if (comp_unit_die.dirname) |
1476 | pst->dirname = xstrdup (comp_unit_die.dirname); | |
57c22c6c | 1477 | |
10b3939b DJ |
1478 | pst->read_symtab_private = (char *) this_cu; |
1479 | ||
613e1657 | 1480 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1481 | |
1482 | /* Store the function that reads in the rest of the symbol table */ | |
1483 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1484 | ||
10b3939b DJ |
1485 | /* If this compilation unit was already read in, free the |
1486 | cached copy in order to read it in again. This is | |
1487 | necessary because we skipped some symbols when we first | |
1488 | read in the compilation unit (see load_partial_dies). | |
1489 | This problem could be avoided, but the benefit is | |
1490 | unclear. */ | |
1491 | if (this_cu->cu != NULL) | |
1492 | free_one_cached_comp_unit (this_cu->cu); | |
ae038cb0 | 1493 | |
10b3939b | 1494 | cu.per_cu = this_cu; |
ae038cb0 | 1495 | |
10b3939b DJ |
1496 | /* Note that this is a pointer to our stack frame, being |
1497 | added to a global data structure. It will be cleaned up | |
1498 | in free_stack_comp_unit when we finish with this | |
1499 | compilation unit. */ | |
1500 | this_cu->cu = &cu; | |
ae038cb0 | 1501 | |
10b3939b | 1502 | this_cu->psymtab = pst; |
ae038cb0 | 1503 | |
c906108c SS |
1504 | /* Check if comp unit has_children. |
1505 | If so, read the rest of the partial symbols from this comp unit. | |
1506 | If not, there's no more debug_info for this comp unit. */ | |
1507 | if (comp_unit_die.has_children) | |
1508 | { | |
72bf9492 DJ |
1509 | struct partial_die_info *first_die; |
1510 | ||
91c24f0a DC |
1511 | lowpc = ((CORE_ADDR) -1); |
1512 | highpc = ((CORE_ADDR) 0); | |
1513 | ||
72bf9492 DJ |
1514 | first_die = load_partial_dies (abfd, info_ptr, 1, &cu); |
1515 | ||
1516 | scan_partial_symbols (first_die, &lowpc, &highpc, &cu); | |
c906108c | 1517 | |
91c24f0a DC |
1518 | /* If we didn't find a lowpc, set it to highpc to avoid |
1519 | complaints from `maint check'. */ | |
1520 | if (lowpc == ((CORE_ADDR) -1)) | |
1521 | lowpc = highpc; | |
72bf9492 | 1522 | |
c906108c SS |
1523 | /* If the compilation unit didn't have an explicit address range, |
1524 | then use the information extracted from its child dies. */ | |
0b010bcc | 1525 | if (! comp_unit_die.has_pc_info) |
c906108c | 1526 | { |
c5aa993b | 1527 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1528 | comp_unit_die.highpc = highpc; |
1529 | } | |
1530 | } | |
c5aa993b | 1531 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1532 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1533 | ||
1534 | pst->n_global_syms = objfile->global_psymbols.next - | |
1535 | (objfile->global_psymbols.list + pst->globals_offset); | |
1536 | pst->n_static_syms = objfile->static_psymbols.next - | |
1537 | (objfile->static_psymbols.list + pst->statics_offset); | |
1538 | sort_pst_symbols (pst); | |
1539 | ||
1540 | /* If there is already a psymtab or symtab for a file of this | |
1541 | name, remove it. (If there is a symtab, more drastic things | |
1542 | also happen.) This happens in VxWorks. */ | |
1543 | free_named_symtabs (pst->filename); | |
1544 | ||
dd373385 EZ |
1545 | info_ptr = beg_of_comp_unit + cu.header.length |
1546 | + cu.header.initial_length_size; | |
1547 | ||
aaa75496 JB |
1548 | if (comp_unit_die.has_stmt_list) |
1549 | { | |
1550 | /* Get the list of files included in the current compilation unit, | |
1551 | and build a psymtab for each of them. */ | |
1552 | dwarf2_build_include_psymtabs (&cu, &comp_unit_die, pst); | |
1553 | } | |
1554 | ||
f3dd6933 | 1555 | do_cleanups (back_to_inner); |
c906108c | 1556 | } |
ae038cb0 DJ |
1557 | do_cleanups (back_to); |
1558 | } | |
1559 | ||
1560 | /* Load the DIEs for a secondary CU into memory. */ | |
1561 | ||
1562 | static void | |
1563 | load_comp_unit (struct dwarf2_per_cu_data *this_cu, struct objfile *objfile) | |
1564 | { | |
1565 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 1566 | gdb_byte *info_ptr, *beg_of_comp_unit; |
ae038cb0 DJ |
1567 | struct partial_die_info comp_unit_die; |
1568 | struct dwarf2_cu *cu; | |
1569 | struct abbrev_info *abbrev; | |
1570 | unsigned int bytes_read; | |
1571 | struct cleanup *back_to; | |
1572 | ||
1573 | info_ptr = dwarf2_per_objfile->info_buffer + this_cu->offset; | |
1574 | beg_of_comp_unit = info_ptr; | |
1575 | ||
1576 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
1577 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
1578 | ||
1579 | obstack_init (&cu->comp_unit_obstack); | |
1580 | ||
1581 | cu->objfile = objfile; | |
1582 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, abfd); | |
1583 | ||
1584 | /* Complete the cu_header. */ | |
1585 | cu->header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; | |
1586 | cu->header.first_die_ptr = info_ptr; | |
1587 | cu->header.cu_head_ptr = beg_of_comp_unit; | |
1588 | ||
1589 | /* Read the abbrevs for this compilation unit into a table. */ | |
1590 | dwarf2_read_abbrevs (abfd, cu); | |
1591 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
1592 | ||
1593 | /* Read the compilation unit die. */ | |
1594 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1595 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1596 | abfd, info_ptr, cu); | |
1597 | ||
1598 | /* Set the language we're debugging. */ | |
1599 | set_cu_language (comp_unit_die.language, cu); | |
1600 | ||
1601 | /* Link this compilation unit into the compilation unit tree. */ | |
1602 | this_cu->cu = cu; | |
1603 | cu->per_cu = this_cu; | |
1604 | ||
1605 | /* Check if comp unit has_children. | |
1606 | If so, read the rest of the partial symbols from this comp unit. | |
1607 | If not, there's no more debug_info for this comp unit. */ | |
1608 | if (comp_unit_die.has_children) | |
1609 | load_partial_dies (abfd, info_ptr, 0, cu); | |
1610 | ||
1611 | do_cleanups (back_to); | |
1612 | } | |
1613 | ||
1614 | /* Create a list of all compilation units in OBJFILE. We do this only | |
1615 | if an inter-comp-unit reference is found; presumably if there is one, | |
1616 | there will be many, and one will occur early in the .debug_info section. | |
1617 | So there's no point in building this list incrementally. */ | |
1618 | ||
1619 | static void | |
1620 | create_all_comp_units (struct objfile *objfile) | |
1621 | { | |
1622 | int n_allocated; | |
1623 | int n_comp_units; | |
1624 | struct dwarf2_per_cu_data **all_comp_units; | |
fe1b8b76 | 1625 | gdb_byte *info_ptr = dwarf2_per_objfile->info_buffer; |
ae038cb0 DJ |
1626 | |
1627 | n_comp_units = 0; | |
1628 | n_allocated = 10; | |
1629 | all_comp_units = xmalloc (n_allocated | |
1630 | * sizeof (struct dwarf2_per_cu_data *)); | |
1631 | ||
1632 | while (info_ptr < dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1633 | { | |
1634 | struct comp_unit_head cu_header; | |
fe1b8b76 | 1635 | gdb_byte *beg_of_comp_unit; |
ae038cb0 DJ |
1636 | struct dwarf2_per_cu_data *this_cu; |
1637 | unsigned long offset; | |
891d2f0b | 1638 | unsigned int bytes_read; |
ae038cb0 DJ |
1639 | |
1640 | offset = info_ptr - dwarf2_per_objfile->info_buffer; | |
1641 | ||
1642 | /* Read just enough information to find out where the next | |
1643 | compilation unit is. */ | |
dd373385 | 1644 | cu_header.initial_length_size = 0; |
ae038cb0 DJ |
1645 | cu_header.length = read_initial_length (objfile->obfd, info_ptr, |
1646 | &cu_header, &bytes_read); | |
1647 | ||
1648 | /* Save the compilation unit for later lookup. */ | |
1649 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
1650 | sizeof (struct dwarf2_per_cu_data)); | |
1651 | memset (this_cu, 0, sizeof (*this_cu)); | |
1652 | this_cu->offset = offset; | |
1653 | this_cu->length = cu_header.length + cu_header.initial_length_size; | |
1654 | ||
1655 | if (n_comp_units == n_allocated) | |
1656 | { | |
1657 | n_allocated *= 2; | |
1658 | all_comp_units = xrealloc (all_comp_units, | |
1659 | n_allocated | |
1660 | * sizeof (struct dwarf2_per_cu_data *)); | |
1661 | } | |
1662 | all_comp_units[n_comp_units++] = this_cu; | |
1663 | ||
1664 | info_ptr = info_ptr + this_cu->length; | |
1665 | } | |
1666 | ||
1667 | dwarf2_per_objfile->all_comp_units | |
1668 | = obstack_alloc (&objfile->objfile_obstack, | |
1669 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1670 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
1671 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1672 | xfree (all_comp_units); | |
1673 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
1674 | } |
1675 | ||
72bf9492 DJ |
1676 | /* Process all loaded DIEs for compilation unit CU, starting at FIRST_DIE. |
1677 | Also set *LOWPC and *HIGHPC to the lowest and highest PC values found | |
1678 | in CU. */ | |
c906108c | 1679 | |
72bf9492 DJ |
1680 | static void |
1681 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
1682 | CORE_ADDR *highpc, struct dwarf2_cu *cu) | |
c906108c | 1683 | { |
e7c27a73 | 1684 | struct objfile *objfile = cu->objfile; |
c906108c | 1685 | bfd *abfd = objfile->obfd; |
72bf9492 | 1686 | struct partial_die_info *pdi; |
c906108c | 1687 | |
91c24f0a DC |
1688 | /* Now, march along the PDI's, descending into ones which have |
1689 | interesting children but skipping the children of the other ones, | |
1690 | until we reach the end of the compilation unit. */ | |
c906108c | 1691 | |
72bf9492 | 1692 | pdi = first_die; |
91c24f0a | 1693 | |
72bf9492 DJ |
1694 | while (pdi != NULL) |
1695 | { | |
1696 | fixup_partial_die (pdi, cu); | |
c906108c | 1697 | |
91c24f0a DC |
1698 | /* Anonymous namespaces have no name but have interesting |
1699 | children, so we need to look at them. Ditto for anonymous | |
1700 | enums. */ | |
933c6fe4 | 1701 | |
72bf9492 DJ |
1702 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
1703 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 1704 | { |
72bf9492 | 1705 | switch (pdi->tag) |
c906108c SS |
1706 | { |
1707 | case DW_TAG_subprogram: | |
72bf9492 | 1708 | if (pdi->has_pc_info) |
c906108c | 1709 | { |
72bf9492 | 1710 | if (pdi->lowpc < *lowpc) |
c906108c | 1711 | { |
72bf9492 | 1712 | *lowpc = pdi->lowpc; |
c906108c | 1713 | } |
72bf9492 | 1714 | if (pdi->highpc > *highpc) |
c906108c | 1715 | { |
72bf9492 | 1716 | *highpc = pdi->highpc; |
c906108c | 1717 | } |
72bf9492 | 1718 | if (!pdi->is_declaration) |
c906108c | 1719 | { |
72bf9492 | 1720 | add_partial_symbol (pdi, cu); |
c906108c SS |
1721 | } |
1722 | } | |
1723 | break; | |
1724 | case DW_TAG_variable: | |
1725 | case DW_TAG_typedef: | |
91c24f0a | 1726 | case DW_TAG_union_type: |
72bf9492 | 1727 | if (!pdi->is_declaration) |
63d06c5c | 1728 | { |
72bf9492 | 1729 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
1730 | } |
1731 | break; | |
c906108c SS |
1732 | case DW_TAG_class_type: |
1733 | case DW_TAG_structure_type: | |
72bf9492 | 1734 | if (!pdi->is_declaration) |
c906108c | 1735 | { |
72bf9492 | 1736 | add_partial_symbol (pdi, cu); |
c906108c SS |
1737 | } |
1738 | break; | |
91c24f0a | 1739 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
1740 | if (!pdi->is_declaration) |
1741 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
1742 | break; |
1743 | case DW_TAG_base_type: | |
a02abb62 | 1744 | case DW_TAG_subrange_type: |
c906108c | 1745 | /* File scope base type definitions are added to the partial |
c5aa993b | 1746 | symbol table. */ |
72bf9492 | 1747 | add_partial_symbol (pdi, cu); |
c906108c | 1748 | break; |
d9fa45fe | 1749 | case DW_TAG_namespace: |
72bf9492 | 1750 | add_partial_namespace (pdi, lowpc, highpc, cu); |
91c24f0a | 1751 | break; |
c906108c SS |
1752 | default: |
1753 | break; | |
1754 | } | |
1755 | } | |
1756 | ||
72bf9492 DJ |
1757 | /* If the die has a sibling, skip to the sibling. */ |
1758 | ||
1759 | pdi = pdi->die_sibling; | |
1760 | } | |
1761 | } | |
1762 | ||
1763 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 1764 | |
72bf9492 | 1765 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
1766 | name is concatenated with "::" and the partial DIE's name. For |
1767 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
1768 | Enumerators are an exception; they use the scope of their parent |
1769 | enumeration type, i.e. the name of the enumeration type is not | |
1770 | prepended to the enumerator. | |
91c24f0a | 1771 | |
72bf9492 DJ |
1772 | There are two complexities. One is DW_AT_specification; in this |
1773 | case "parent" means the parent of the target of the specification, | |
1774 | instead of the direct parent of the DIE. The other is compilers | |
1775 | which do not emit DW_TAG_namespace; in this case we try to guess | |
1776 | the fully qualified name of structure types from their members' | |
1777 | linkage names. This must be done using the DIE's children rather | |
1778 | than the children of any DW_AT_specification target. We only need | |
1779 | to do this for structures at the top level, i.e. if the target of | |
1780 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
1781 | have a parent. */ | |
1782 | ||
1783 | /* Compute the scope prefix associated with PDI's parent, in | |
1784 | compilation unit CU. The result will be allocated on CU's | |
1785 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
1786 | field. NULL is returned if no prefix is necessary. */ | |
1787 | static char * | |
1788 | partial_die_parent_scope (struct partial_die_info *pdi, | |
1789 | struct dwarf2_cu *cu) | |
1790 | { | |
1791 | char *grandparent_scope; | |
1792 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 1793 | |
72bf9492 DJ |
1794 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
1795 | then this means the parent of the specification DIE. */ | |
1796 | ||
1797 | real_pdi = pdi; | |
72bf9492 | 1798 | while (real_pdi->has_specification) |
10b3939b | 1799 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
1800 | |
1801 | parent = real_pdi->die_parent; | |
1802 | if (parent == NULL) | |
1803 | return NULL; | |
1804 | ||
1805 | if (parent->scope_set) | |
1806 | return parent->scope; | |
1807 | ||
1808 | fixup_partial_die (parent, cu); | |
1809 | ||
10b3939b | 1810 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 DJ |
1811 | |
1812 | if (parent->tag == DW_TAG_namespace | |
1813 | || parent->tag == DW_TAG_structure_type | |
1814 | || parent->tag == DW_TAG_class_type | |
1815 | || parent->tag == DW_TAG_union_type) | |
1816 | { | |
1817 | if (grandparent_scope == NULL) | |
1818 | parent->scope = parent->name; | |
1819 | else | |
987504bb JJ |
1820 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
1821 | parent->name, cu); | |
72bf9492 DJ |
1822 | } |
1823 | else if (parent->tag == DW_TAG_enumeration_type) | |
1824 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
1825 | parent->scope = grandparent_scope; | |
1826 | else | |
1827 | { | |
1828 | /* FIXME drow/2004-04-01: What should we be doing with | |
1829 | function-local names? For partial symbols, we should probably be | |
1830 | ignoring them. */ | |
1831 | complaint (&symfile_complaints, | |
e2e0b3e5 | 1832 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
1833 | parent->tag, pdi->offset); |
1834 | parent->scope = grandparent_scope; | |
c906108c SS |
1835 | } |
1836 | ||
72bf9492 DJ |
1837 | parent->scope_set = 1; |
1838 | return parent->scope; | |
1839 | } | |
1840 | ||
1841 | /* Return the fully scoped name associated with PDI, from compilation unit | |
1842 | CU. The result will be allocated with malloc. */ | |
1843 | static char * | |
1844 | partial_die_full_name (struct partial_die_info *pdi, | |
1845 | struct dwarf2_cu *cu) | |
1846 | { | |
1847 | char *parent_scope; | |
1848 | ||
1849 | parent_scope = partial_die_parent_scope (pdi, cu); | |
1850 | if (parent_scope == NULL) | |
1851 | return NULL; | |
1852 | else | |
987504bb | 1853 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
1854 | } |
1855 | ||
1856 | static void | |
72bf9492 | 1857 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 1858 | { |
e7c27a73 | 1859 | struct objfile *objfile = cu->objfile; |
c906108c | 1860 | CORE_ADDR addr = 0; |
72bf9492 DJ |
1861 | char *actual_name; |
1862 | const char *my_prefix; | |
5c4e30ca | 1863 | const struct partial_symbol *psym = NULL; |
e142c38c | 1864 | CORE_ADDR baseaddr; |
72bf9492 | 1865 | int built_actual_name = 0; |
e142c38c DJ |
1866 | |
1867 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1868 | |
72bf9492 DJ |
1869 | actual_name = NULL; |
1870 | ||
1871 | if (pdi_needs_namespace (pdi->tag)) | |
63d06c5c | 1872 | { |
72bf9492 DJ |
1873 | actual_name = partial_die_full_name (pdi, cu); |
1874 | if (actual_name) | |
1875 | built_actual_name = 1; | |
63d06c5c DC |
1876 | } |
1877 | ||
72bf9492 DJ |
1878 | if (actual_name == NULL) |
1879 | actual_name = pdi->name; | |
1880 | ||
c906108c SS |
1881 | switch (pdi->tag) |
1882 | { | |
1883 | case DW_TAG_subprogram: | |
1884 | if (pdi->is_external) | |
1885 | { | |
38d518c9 | 1886 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1887 | mst_text, objfile); */ |
38d518c9 | 1888 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1889 | VAR_DOMAIN, LOC_BLOCK, |
1890 | &objfile->global_psymbols, | |
1891 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1892 | cu->language, objfile); |
c906108c SS |
1893 | } |
1894 | else | |
1895 | { | |
38d518c9 | 1896 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1897 | mst_file_text, objfile); */ |
38d518c9 | 1898 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1899 | VAR_DOMAIN, LOC_BLOCK, |
1900 | &objfile->static_psymbols, | |
1901 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1902 | cu->language, objfile); |
c906108c SS |
1903 | } |
1904 | break; | |
1905 | case DW_TAG_variable: | |
1906 | if (pdi->is_external) | |
1907 | { | |
1908 | /* Global Variable. | |
1909 | Don't enter into the minimal symbol tables as there is | |
1910 | a minimal symbol table entry from the ELF symbols already. | |
1911 | Enter into partial symbol table if it has a location | |
1912 | descriptor or a type. | |
1913 | If the location descriptor is missing, new_symbol will create | |
1914 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1915 | be determined from the minimal symbol table whenever the variable | |
1916 | is referenced. | |
1917 | The address for the partial symbol table entry is not | |
1918 | used by GDB, but it comes in handy for debugging partial symbol | |
1919 | table building. */ | |
1920 | ||
1921 | if (pdi->locdesc) | |
e7c27a73 | 1922 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1923 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1924 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1925 | VAR_DOMAIN, LOC_STATIC, |
1926 | &objfile->global_psymbols, | |
1927 | 0, addr + baseaddr, | |
e142c38c | 1928 | cu->language, objfile); |
c906108c SS |
1929 | } |
1930 | else | |
1931 | { | |
1932 | /* Static Variable. Skip symbols without location descriptors. */ | |
1933 | if (pdi->locdesc == NULL) | |
1934 | return; | |
e7c27a73 | 1935 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 1936 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 1937 | mst_file_data, objfile); */ |
38d518c9 | 1938 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1939 | VAR_DOMAIN, LOC_STATIC, |
1940 | &objfile->static_psymbols, | |
1941 | 0, addr + baseaddr, | |
e142c38c | 1942 | cu->language, objfile); |
c906108c SS |
1943 | } |
1944 | break; | |
1945 | case DW_TAG_typedef: | |
1946 | case DW_TAG_base_type: | |
a02abb62 | 1947 | case DW_TAG_subrange_type: |
38d518c9 | 1948 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1949 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 1950 | &objfile->static_psymbols, |
e142c38c | 1951 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1952 | break; |
72bf9492 DJ |
1953 | case DW_TAG_namespace: |
1954 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
1955 | VAR_DOMAIN, LOC_TYPEDEF, | |
1956 | &objfile->global_psymbols, | |
1957 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
1958 | break; | |
c906108c SS |
1959 | case DW_TAG_class_type: |
1960 | case DW_TAG_structure_type: | |
1961 | case DW_TAG_union_type: | |
1962 | case DW_TAG_enumeration_type: | |
1963 | /* Skip aggregate types without children, these are external | |
c5aa993b | 1964 | references. */ |
63d06c5c DC |
1965 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
1966 | static vs. global. */ | |
c906108c SS |
1967 | if (pdi->has_children == 0) |
1968 | return; | |
38d518c9 | 1969 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1970 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
1971 | (cu->language == language_cplus |
1972 | || cu->language == language_java) | |
63d06c5c DC |
1973 | ? &objfile->global_psymbols |
1974 | : &objfile->static_psymbols, | |
e142c38c | 1975 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1976 | |
987504bb JJ |
1977 | if (cu->language == language_cplus |
1978 | || cu->language == language_java) | |
c906108c | 1979 | { |
987504bb | 1980 | /* For C++ and Java, these implicitly act as typedefs as well. */ |
38d518c9 | 1981 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1982 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 1983 | &objfile->global_psymbols, |
e142c38c | 1984 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1985 | } |
1986 | break; | |
1987 | case DW_TAG_enumerator: | |
38d518c9 | 1988 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1989 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
1990 | (cu->language == language_cplus |
1991 | || cu->language == language_java) | |
f6fe98ef DJ |
1992 | ? &objfile->global_psymbols |
1993 | : &objfile->static_psymbols, | |
e142c38c | 1994 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1995 | break; |
1996 | default: | |
1997 | break; | |
1998 | } | |
5c4e30ca DC |
1999 | |
2000 | /* Check to see if we should scan the name for possible namespace | |
2001 | info. Only do this if this is C++, if we don't have namespace | |
2002 | debugging info in the file, if the psym is of an appropriate type | |
2003 | (otherwise we'll have psym == NULL), and if we actually had a | |
2004 | mangled name to begin with. */ | |
2005 | ||
72bf9492 DJ |
2006 | /* FIXME drow/2004-02-22: Why don't we do this for classes, i.e. the |
2007 | cases which do not set PSYM above? */ | |
2008 | ||
e142c38c | 2009 | if (cu->language == language_cplus |
72bf9492 | 2010 | && cu->has_namespace_info == 0 |
5c4e30ca DC |
2011 | && psym != NULL |
2012 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
2013 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
2014 | objfile); | |
72bf9492 DJ |
2015 | |
2016 | if (built_actual_name) | |
2017 | xfree (actual_name); | |
c906108c SS |
2018 | } |
2019 | ||
72bf9492 DJ |
2020 | /* Determine whether a die of type TAG living in a C++ class or |
2021 | namespace needs to have the name of the scope prepended to the | |
63d06c5c DC |
2022 | name listed in the die. */ |
2023 | ||
2024 | static int | |
72bf9492 | 2025 | pdi_needs_namespace (enum dwarf_tag tag) |
63d06c5c | 2026 | { |
63d06c5c DC |
2027 | switch (tag) |
2028 | { | |
72bf9492 | 2029 | case DW_TAG_namespace: |
63d06c5c DC |
2030 | case DW_TAG_typedef: |
2031 | case DW_TAG_class_type: | |
2032 | case DW_TAG_structure_type: | |
2033 | case DW_TAG_union_type: | |
2034 | case DW_TAG_enumeration_type: | |
2035 | case DW_TAG_enumerator: | |
2036 | return 1; | |
2037 | default: | |
2038 | return 0; | |
2039 | } | |
2040 | } | |
2041 | ||
5c4e30ca DC |
2042 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2043 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2044 | the name of the enclosing namespace. */ | |
91c24f0a | 2045 | |
72bf9492 DJ |
2046 | static void |
2047 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2048 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
72bf9492 | 2049 | struct dwarf2_cu *cu) |
91c24f0a | 2050 | { |
e7c27a73 | 2051 | struct objfile *objfile = cu->objfile; |
5c4e30ca | 2052 | |
72bf9492 | 2053 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2054 | |
72bf9492 | 2055 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2056 | |
2057 | /* Now scan partial symbols in that namespace. */ | |
2058 | ||
91c24f0a | 2059 | if (pdi->has_children) |
72bf9492 | 2060 | scan_partial_symbols (pdi->die_child, lowpc, highpc, cu); |
91c24f0a DC |
2061 | } |
2062 | ||
72bf9492 DJ |
2063 | /* See if we can figure out if the class lives in a namespace. We do |
2064 | this by looking for a member function; its demangled name will | |
2065 | contain namespace info, if there is any. */ | |
63d06c5c | 2066 | |
72bf9492 DJ |
2067 | static void |
2068 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2069 | struct dwarf2_cu *cu) | |
63d06c5c | 2070 | { |
987504bb JJ |
2071 | if ((cu->language == language_cplus |
2072 | || cu->language == language_java) | |
72bf9492 | 2073 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2074 | && struct_pdi->has_children) |
2075 | { | |
63d06c5c DC |
2076 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2077 | what template types look like, because the demangler | |
2078 | frequently doesn't give the same name as the debug info. We | |
2079 | could fix this by only using the demangled name to get the | |
134d01f1 | 2080 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2081 | |
72bf9492 DJ |
2082 | struct partial_die_info *child_pdi = struct_pdi->die_child; |
2083 | struct partial_die_info *real_pdi; | |
5d51ca54 | 2084 | |
72bf9492 DJ |
2085 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2086 | we should not do this. We'll prepend the parent's fully qualified | |
2087 | name when we create the partial symbol. */ | |
5d51ca54 | 2088 | |
72bf9492 | 2089 | real_pdi = struct_pdi; |
72bf9492 | 2090 | while (real_pdi->has_specification) |
10b3939b | 2091 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2092 | |
72bf9492 DJ |
2093 | if (real_pdi->die_parent != NULL) |
2094 | return; | |
63d06c5c | 2095 | |
72bf9492 DJ |
2096 | while (child_pdi != NULL) |
2097 | { | |
2098 | if (child_pdi->tag == DW_TAG_subprogram) | |
63d06c5c | 2099 | { |
72bf9492 | 2100 | char *actual_class_name |
31c27f77 JJ |
2101 | = language_class_name_from_physname (cu->language_defn, |
2102 | child_pdi->name); | |
63d06c5c | 2103 | if (actual_class_name != NULL) |
72bf9492 DJ |
2104 | { |
2105 | struct_pdi->name | |
2106 | = obsavestring (actual_class_name, | |
2107 | strlen (actual_class_name), | |
2108 | &cu->comp_unit_obstack); | |
2109 | xfree (actual_class_name); | |
2110 | } | |
63d06c5c DC |
2111 | break; |
2112 | } | |
72bf9492 DJ |
2113 | |
2114 | child_pdi = child_pdi->die_sibling; | |
63d06c5c DC |
2115 | } |
2116 | } | |
63d06c5c DC |
2117 | } |
2118 | ||
91c24f0a DC |
2119 | /* Read a partial die corresponding to an enumeration type. */ |
2120 | ||
72bf9492 DJ |
2121 | static void |
2122 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2123 | struct dwarf2_cu *cu) | |
91c24f0a | 2124 | { |
e7c27a73 | 2125 | struct objfile *objfile = cu->objfile; |
91c24f0a | 2126 | bfd *abfd = objfile->obfd; |
72bf9492 | 2127 | struct partial_die_info *pdi; |
91c24f0a DC |
2128 | |
2129 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2130 | add_partial_symbol (enum_pdi, cu); |
2131 | ||
2132 | pdi = enum_pdi->die_child; | |
2133 | while (pdi) | |
91c24f0a | 2134 | { |
72bf9492 | 2135 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 2136 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 2137 | else |
72bf9492 DJ |
2138 | add_partial_symbol (pdi, cu); |
2139 | pdi = pdi->die_sibling; | |
91c24f0a | 2140 | } |
91c24f0a DC |
2141 | } |
2142 | ||
4bb7a0a7 DJ |
2143 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2144 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2145 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2146 | the initial number. */ | |
2147 | ||
2148 | static struct abbrev_info * | |
fe1b8b76 | 2149 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 2150 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2151 | { |
2152 | bfd *abfd = cu->objfile->obfd; | |
2153 | unsigned int abbrev_number; | |
2154 | struct abbrev_info *abbrev; | |
2155 | ||
2156 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2157 | ||
2158 | if (abbrev_number == 0) | |
2159 | return NULL; | |
2160 | ||
2161 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2162 | if (!abbrev) | |
2163 | { | |
8a3fe4f8 | 2164 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
2165 | bfd_get_filename (abfd)); |
2166 | } | |
2167 | ||
2168 | return abbrev; | |
2169 | } | |
2170 | ||
2171 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
2172 | pointer to the end of a series of DIEs, terminated by an empty | |
2173 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
2174 | ||
fe1b8b76 JB |
2175 | static gdb_byte * |
2176 | skip_children (gdb_byte *info_ptr, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
2177 | { |
2178 | struct abbrev_info *abbrev; | |
2179 | unsigned int bytes_read; | |
2180 | ||
2181 | while (1) | |
2182 | { | |
2183 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2184 | if (abbrev == NULL) | |
2185 | return info_ptr + bytes_read; | |
2186 | else | |
2187 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
2188 | } | |
2189 | } | |
2190 | ||
2191 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
2192 | should point just after the initial uleb128 of a DIE, and the | |
2193 | abbrev corresponding to that skipped uleb128 should be passed in | |
2194 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2195 | children. */ | |
2196 | ||
fe1b8b76 JB |
2197 | static gdb_byte * |
2198 | skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, | |
4bb7a0a7 DJ |
2199 | struct dwarf2_cu *cu) |
2200 | { | |
2201 | unsigned int bytes_read; | |
2202 | struct attribute attr; | |
2203 | bfd *abfd = cu->objfile->obfd; | |
2204 | unsigned int form, i; | |
2205 | ||
2206 | for (i = 0; i < abbrev->num_attrs; i++) | |
2207 | { | |
2208 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2209 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2210 | { | |
2211 | read_attribute (&attr, &abbrev->attrs[i], | |
2212 | abfd, info_ptr, cu); | |
2213 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 2214 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 2215 | else |
6502dd73 DJ |
2216 | return dwarf2_per_objfile->info_buffer |
2217 | + dwarf2_get_ref_die_offset (&attr, cu); | |
4bb7a0a7 DJ |
2218 | } |
2219 | ||
2220 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2221 | form = abbrev->attrs[i].form; | |
2222 | skip_attribute: | |
2223 | switch (form) | |
2224 | { | |
2225 | case DW_FORM_addr: | |
2226 | case DW_FORM_ref_addr: | |
2227 | info_ptr += cu->header.addr_size; | |
2228 | break; | |
2229 | case DW_FORM_data1: | |
2230 | case DW_FORM_ref1: | |
2231 | case DW_FORM_flag: | |
2232 | info_ptr += 1; | |
2233 | break; | |
2234 | case DW_FORM_data2: | |
2235 | case DW_FORM_ref2: | |
2236 | info_ptr += 2; | |
2237 | break; | |
2238 | case DW_FORM_data4: | |
2239 | case DW_FORM_ref4: | |
2240 | info_ptr += 4; | |
2241 | break; | |
2242 | case DW_FORM_data8: | |
2243 | case DW_FORM_ref8: | |
2244 | info_ptr += 8; | |
2245 | break; | |
2246 | case DW_FORM_string: | |
2247 | read_string (abfd, info_ptr, &bytes_read); | |
2248 | info_ptr += bytes_read; | |
2249 | break; | |
2250 | case DW_FORM_strp: | |
2251 | info_ptr += cu->header.offset_size; | |
2252 | break; | |
2253 | case DW_FORM_block: | |
2254 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2255 | info_ptr += bytes_read; | |
2256 | break; | |
2257 | case DW_FORM_block1: | |
2258 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2259 | break; | |
2260 | case DW_FORM_block2: | |
2261 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2262 | break; | |
2263 | case DW_FORM_block4: | |
2264 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2265 | break; | |
2266 | case DW_FORM_sdata: | |
2267 | case DW_FORM_udata: | |
2268 | case DW_FORM_ref_udata: | |
2269 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2270 | break; | |
2271 | case DW_FORM_indirect: | |
2272 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2273 | info_ptr += bytes_read; | |
2274 | /* We need to continue parsing from here, so just go back to | |
2275 | the top. */ | |
2276 | goto skip_attribute; | |
2277 | ||
2278 | default: | |
8a3fe4f8 | 2279 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
2280 | dwarf_form_name (form), |
2281 | bfd_get_filename (abfd)); | |
2282 | } | |
2283 | } | |
2284 | ||
2285 | if (abbrev->has_children) | |
2286 | return skip_children (info_ptr, cu); | |
2287 | else | |
2288 | return info_ptr; | |
2289 | } | |
2290 | ||
2291 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
2292 | the next DIE after ORIG_PDI. */ | |
91c24f0a | 2293 | |
fe1b8b76 JB |
2294 | static gdb_byte * |
2295 | locate_pdi_sibling (struct partial_die_info *orig_pdi, gdb_byte *info_ptr, | |
e7c27a73 | 2296 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2297 | { |
2298 | /* Do we know the sibling already? */ | |
72bf9492 | 2299 | |
91c24f0a DC |
2300 | if (orig_pdi->sibling) |
2301 | return orig_pdi->sibling; | |
2302 | ||
2303 | /* Are there any children to deal with? */ | |
2304 | ||
2305 | if (!orig_pdi->has_children) | |
2306 | return info_ptr; | |
2307 | ||
4bb7a0a7 | 2308 | /* Skip the children the long way. */ |
91c24f0a | 2309 | |
4bb7a0a7 | 2310 | return skip_children (info_ptr, cu); |
91c24f0a DC |
2311 | } |
2312 | ||
c906108c SS |
2313 | /* Expand this partial symbol table into a full symbol table. */ |
2314 | ||
2315 | static void | |
fba45db2 | 2316 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2317 | { |
2318 | /* FIXME: This is barely more than a stub. */ | |
2319 | if (pst != NULL) | |
2320 | { | |
2321 | if (pst->readin) | |
2322 | { | |
8a3fe4f8 | 2323 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
2324 | } |
2325 | else | |
2326 | { | |
2327 | if (info_verbose) | |
2328 | { | |
a3f17187 | 2329 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
2330 | gdb_flush (gdb_stdout); |
2331 | } | |
2332 | ||
10b3939b DJ |
2333 | /* Restore our global data. */ |
2334 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2335 | dwarf2_objfile_data_key); | |
2336 | ||
c906108c SS |
2337 | psymtab_to_symtab_1 (pst); |
2338 | ||
2339 | /* Finish up the debug error message. */ | |
2340 | if (info_verbose) | |
a3f17187 | 2341 | printf_filtered (_("done.\n")); |
c906108c SS |
2342 | } |
2343 | } | |
2344 | } | |
2345 | ||
10b3939b DJ |
2346 | /* Add PER_CU to the queue. */ |
2347 | ||
2348 | static void | |
2349 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2350 | { | |
2351 | struct dwarf2_queue_item *item; | |
2352 | ||
2353 | per_cu->queued = 1; | |
2354 | item = xmalloc (sizeof (*item)); | |
2355 | item->per_cu = per_cu; | |
2356 | item->next = NULL; | |
2357 | ||
2358 | if (dwarf2_queue == NULL) | |
2359 | dwarf2_queue = item; | |
2360 | else | |
2361 | dwarf2_queue_tail->next = item; | |
2362 | ||
2363 | dwarf2_queue_tail = item; | |
2364 | } | |
2365 | ||
2366 | /* Process the queue. */ | |
2367 | ||
2368 | static void | |
2369 | process_queue (struct objfile *objfile) | |
2370 | { | |
2371 | struct dwarf2_queue_item *item, *next_item; | |
2372 | ||
2373 | /* Initially, there is just one item on the queue. Load its DIEs, | |
2374 | and the DIEs of any other compilation units it requires, | |
2375 | transitively. */ | |
2376 | ||
2377 | for (item = dwarf2_queue; item != NULL; item = item->next) | |
2378 | { | |
2379 | /* Read in this compilation unit. This may add new items to | |
2380 | the end of the queue. */ | |
2381 | load_full_comp_unit (item->per_cu); | |
2382 | ||
2383 | item->per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
2384 | dwarf2_per_objfile->read_in_chain = item->per_cu; | |
2385 | ||
2386 | /* If this compilation unit has already had full symbols created, | |
2387 | reset the TYPE fields in each DIE. */ | |
2388 | if (item->per_cu->psymtab->readin) | |
2389 | reset_die_and_siblings_types (item->per_cu->cu->dies, | |
2390 | item->per_cu->cu); | |
2391 | } | |
2392 | ||
2393 | /* Now everything left on the queue needs to be read in. Process | |
2394 | them, one at a time, removing from the queue as we finish. */ | |
2395 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) | |
2396 | { | |
2397 | if (!item->per_cu->psymtab->readin) | |
2398 | process_full_comp_unit (item->per_cu); | |
2399 | ||
2400 | item->per_cu->queued = 0; | |
2401 | next_item = item->next; | |
2402 | xfree (item); | |
2403 | } | |
2404 | ||
2405 | dwarf2_queue_tail = NULL; | |
2406 | } | |
2407 | ||
2408 | /* Free all allocated queue entries. This function only releases anything if | |
2409 | an error was thrown; if the queue was processed then it would have been | |
2410 | freed as we went along. */ | |
2411 | ||
2412 | static void | |
2413 | dwarf2_release_queue (void *dummy) | |
2414 | { | |
2415 | struct dwarf2_queue_item *item, *last; | |
2416 | ||
2417 | item = dwarf2_queue; | |
2418 | while (item) | |
2419 | { | |
2420 | /* Anything still marked queued is likely to be in an | |
2421 | inconsistent state, so discard it. */ | |
2422 | if (item->per_cu->queued) | |
2423 | { | |
2424 | if (item->per_cu->cu != NULL) | |
2425 | free_one_cached_comp_unit (item->per_cu->cu); | |
2426 | item->per_cu->queued = 0; | |
2427 | } | |
2428 | ||
2429 | last = item; | |
2430 | item = item->next; | |
2431 | xfree (last); | |
2432 | } | |
2433 | ||
2434 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2435 | } | |
2436 | ||
2437 | /* Read in full symbols for PST, and anything it depends on. */ | |
2438 | ||
c906108c | 2439 | static void |
fba45db2 | 2440 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 2441 | { |
10b3939b | 2442 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 2443 | struct cleanup *back_to; |
aaa75496 JB |
2444 | int i; |
2445 | ||
2446 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2447 | if (!pst->dependencies[i]->readin) | |
2448 | { | |
2449 | /* Inform about additional files that need to be read in. */ | |
2450 | if (info_verbose) | |
2451 | { | |
a3f17187 | 2452 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
2453 | fputs_filtered (" ", gdb_stdout); |
2454 | wrap_here (""); | |
2455 | fputs_filtered ("and ", gdb_stdout); | |
2456 | wrap_here (""); | |
2457 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
2458 | wrap_here (""); /* Flush output */ | |
2459 | gdb_flush (gdb_stdout); | |
2460 | } | |
2461 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
2462 | } | |
2463 | ||
10b3939b DJ |
2464 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
2465 | ||
2466 | if (per_cu == NULL) | |
aaa75496 JB |
2467 | { |
2468 | /* It's an include file, no symbols to read for it. | |
2469 | Everything is in the parent symtab. */ | |
2470 | pst->readin = 1; | |
2471 | return; | |
2472 | } | |
c906108c | 2473 | |
10b3939b DJ |
2474 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2475 | ||
2476 | queue_comp_unit (per_cu); | |
2477 | ||
2478 | process_queue (pst->objfile); | |
2479 | ||
2480 | /* Age the cache, releasing compilation units that have not | |
2481 | been used recently. */ | |
2482 | age_cached_comp_units (); | |
2483 | ||
2484 | do_cleanups (back_to); | |
2485 | } | |
2486 | ||
2487 | /* Load the DIEs associated with PST and PER_CU into memory. */ | |
2488 | ||
2489 | static struct dwarf2_cu * | |
2490 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2491 | { | |
2492 | struct partial_symtab *pst = per_cu->psymtab; | |
2493 | bfd *abfd = pst->objfile->obfd; | |
2494 | struct dwarf2_cu *cu; | |
2495 | unsigned long offset; | |
fe1b8b76 | 2496 | gdb_byte *info_ptr; |
10b3939b DJ |
2497 | struct cleanup *back_to, *free_cu_cleanup; |
2498 | struct attribute *attr; | |
2499 | CORE_ADDR baseaddr; | |
6502dd73 | 2500 | |
c906108c | 2501 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 2502 | offset = per_cu->offset; |
6502dd73 DJ |
2503 | |
2504 | info_ptr = dwarf2_per_objfile->info_buffer + offset; | |
63d06c5c | 2505 | |
10b3939b DJ |
2506 | cu = xmalloc (sizeof (struct dwarf2_cu)); |
2507 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
c906108c | 2508 | |
10b3939b DJ |
2509 | /* If an error occurs while loading, release our storage. */ |
2510 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 2511 | |
10b3939b | 2512 | cu->objfile = pst->objfile; |
e7c27a73 | 2513 | |
c906108c | 2514 | /* read in the comp_unit header */ |
10b3939b | 2515 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c SS |
2516 | |
2517 | /* Read the abbrevs for this compilation unit */ | |
10b3939b DJ |
2518 | dwarf2_read_abbrevs (abfd, cu); |
2519 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2520 | ||
2521 | cu->header.offset = offset; | |
c906108c | 2522 | |
10b3939b DJ |
2523 | cu->per_cu = per_cu; |
2524 | per_cu->cu = cu; | |
e142c38c | 2525 | |
10b3939b DJ |
2526 | /* We use this obstack for block values in dwarf_alloc_block. */ |
2527 | obstack_init (&cu->comp_unit_obstack); | |
2528 | ||
2529 | cu->dies = read_comp_unit (info_ptr, abfd, cu); | |
2530 | ||
2531 | /* We try not to read any attributes in this function, because not | |
2532 | all objfiles needed for references have been loaded yet, and symbol | |
2533 | table processing isn't initialized. But we have to set the CU language, | |
2534 | or we won't be able to build types correctly. */ | |
2535 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
2536 | if (attr) | |
2537 | set_cu_language (DW_UNSND (attr), cu); | |
2538 | else | |
2539 | set_cu_language (language_minimal, cu); | |
2540 | ||
2541 | do_cleanups (back_to); | |
e142c38c | 2542 | |
10b3939b DJ |
2543 | /* We've successfully allocated this compilation unit. Let our caller |
2544 | clean it up when finished with it. */ | |
2545 | discard_cleanups (free_cu_cleanup); | |
c906108c | 2546 | |
10b3939b DJ |
2547 | return cu; |
2548 | } | |
2549 | ||
2550 | /* Generate full symbol information for PST and CU, whose DIEs have | |
2551 | already been loaded into memory. */ | |
2552 | ||
2553 | static void | |
2554 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2555 | { | |
2556 | struct partial_symtab *pst = per_cu->psymtab; | |
2557 | struct dwarf2_cu *cu = per_cu->cu; | |
2558 | struct objfile *objfile = pst->objfile; | |
2559 | bfd *abfd = objfile->obfd; | |
2560 | CORE_ADDR lowpc, highpc; | |
2561 | struct symtab *symtab; | |
2562 | struct cleanup *back_to; | |
2563 | struct attribute *attr; | |
2564 | CORE_ADDR baseaddr; | |
2565 | ||
2566 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2567 | ||
2568 | /* We're in the global namespace. */ | |
2569 | processing_current_prefix = ""; | |
2570 | ||
2571 | buildsym_init (); | |
2572 | back_to = make_cleanup (really_free_pendings, NULL); | |
2573 | ||
2574 | cu->list_in_scope = &file_symbols; | |
c906108c | 2575 | |
0d53c4c4 DJ |
2576 | /* Find the base address of the compilation unit for range lists and |
2577 | location lists. It will normally be specified by DW_AT_low_pc. | |
2578 | In DWARF-3 draft 4, the base address could be overridden by | |
2579 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2580 | compilation units with discontinuous ranges. */ | |
2581 | ||
10b3939b DJ |
2582 | cu->header.base_known = 0; |
2583 | cu->header.base_address = 0; | |
0d53c4c4 | 2584 | |
10b3939b | 2585 | attr = dwarf2_attr (cu->dies, DW_AT_entry_pc, cu); |
0d53c4c4 DJ |
2586 | if (attr) |
2587 | { | |
10b3939b DJ |
2588 | cu->header.base_address = DW_ADDR (attr); |
2589 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2590 | } |
2591 | else | |
2592 | { | |
10b3939b | 2593 | attr = dwarf2_attr (cu->dies, DW_AT_low_pc, cu); |
0d53c4c4 DJ |
2594 | if (attr) |
2595 | { | |
10b3939b DJ |
2596 | cu->header.base_address = DW_ADDR (attr); |
2597 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2598 | } |
2599 | } | |
2600 | ||
c906108c | 2601 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 2602 | process_die (cu->dies, cu); |
c906108c | 2603 | |
fae299cd DC |
2604 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
2605 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
2606 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 2607 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 2608 | |
613e1657 | 2609 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2610 | |
2611 | /* Set symtab language to language from DW_AT_language. | |
2612 | If the compilation is from a C file generated by language preprocessors, | |
2613 | do not set the language if it was already deduced by start_subfile. */ | |
2614 | if (symtab != NULL | |
10b3939b | 2615 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 2616 | { |
10b3939b | 2617 | symtab->language = cu->language; |
c906108c SS |
2618 | } |
2619 | pst->symtab = symtab; | |
2620 | pst->readin = 1; | |
c906108c SS |
2621 | |
2622 | do_cleanups (back_to); | |
2623 | } | |
2624 | ||
2625 | /* Process a die and its children. */ | |
2626 | ||
2627 | static void | |
e7c27a73 | 2628 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2629 | { |
2630 | switch (die->tag) | |
2631 | { | |
2632 | case DW_TAG_padding: | |
2633 | break; | |
2634 | case DW_TAG_compile_unit: | |
e7c27a73 | 2635 | read_file_scope (die, cu); |
c906108c SS |
2636 | break; |
2637 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
2638 | read_subroutine_type (die, cu); |
2639 | read_func_scope (die, cu); | |
c906108c SS |
2640 | break; |
2641 | case DW_TAG_inlined_subroutine: | |
2642 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2643 | They could be used to set breakpoints on all inlined instances |
2644 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2645 | break; |
2646 | case DW_TAG_lexical_block: | |
14898363 L |
2647 | case DW_TAG_try_block: |
2648 | case DW_TAG_catch_block: | |
e7c27a73 | 2649 | read_lexical_block_scope (die, cu); |
c906108c SS |
2650 | break; |
2651 | case DW_TAG_class_type: | |
2652 | case DW_TAG_structure_type: | |
2653 | case DW_TAG_union_type: | |
134d01f1 DJ |
2654 | read_structure_type (die, cu); |
2655 | process_structure_scope (die, cu); | |
c906108c SS |
2656 | break; |
2657 | case DW_TAG_enumeration_type: | |
134d01f1 DJ |
2658 | read_enumeration_type (die, cu); |
2659 | process_enumeration_scope (die, cu); | |
c906108c | 2660 | break; |
134d01f1 DJ |
2661 | |
2662 | /* FIXME drow/2004-03-14: These initialize die->type, but do not create | |
2663 | a symbol or process any children. Therefore it doesn't do anything | |
2664 | that won't be done on-demand by read_type_die. */ | |
c906108c | 2665 | case DW_TAG_subroutine_type: |
e7c27a73 | 2666 | read_subroutine_type (die, cu); |
c906108c | 2667 | break; |
72019c9c GM |
2668 | case DW_TAG_set_type: |
2669 | read_set_type (die, cu); | |
2670 | break; | |
c906108c | 2671 | case DW_TAG_array_type: |
e7c27a73 | 2672 | read_array_type (die, cu); |
c906108c SS |
2673 | break; |
2674 | case DW_TAG_pointer_type: | |
e7c27a73 | 2675 | read_tag_pointer_type (die, cu); |
c906108c SS |
2676 | break; |
2677 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 2678 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
2679 | break; |
2680 | case DW_TAG_reference_type: | |
e7c27a73 | 2681 | read_tag_reference_type (die, cu); |
c906108c SS |
2682 | break; |
2683 | case DW_TAG_string_type: | |
e7c27a73 | 2684 | read_tag_string_type (die, cu); |
c906108c | 2685 | break; |
134d01f1 DJ |
2686 | /* END FIXME */ |
2687 | ||
c906108c | 2688 | case DW_TAG_base_type: |
e7c27a73 | 2689 | read_base_type (die, cu); |
134d01f1 DJ |
2690 | /* Add a typedef symbol for the type definition, if it has a |
2691 | DW_AT_name. */ | |
2692 | new_symbol (die, die->type, cu); | |
c906108c | 2693 | break; |
a02abb62 JB |
2694 | case DW_TAG_subrange_type: |
2695 | read_subrange_type (die, cu); | |
134d01f1 DJ |
2696 | /* Add a typedef symbol for the type definition, if it has a |
2697 | DW_AT_name. */ | |
2698 | new_symbol (die, die->type, cu); | |
a02abb62 | 2699 | break; |
c906108c | 2700 | case DW_TAG_common_block: |
e7c27a73 | 2701 | read_common_block (die, cu); |
c906108c SS |
2702 | break; |
2703 | case DW_TAG_common_inclusion: | |
2704 | break; | |
d9fa45fe | 2705 | case DW_TAG_namespace: |
63d06c5c | 2706 | processing_has_namespace_info = 1; |
e7c27a73 | 2707 | read_namespace (die, cu); |
d9fa45fe DC |
2708 | break; |
2709 | case DW_TAG_imported_declaration: | |
2710 | case DW_TAG_imported_module: | |
2711 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2712 | information contained in these. DW_TAG_imported_declaration | |
2713 | dies shouldn't have children; DW_TAG_imported_module dies | |
2714 | shouldn't in the C++ case, but conceivably could in the | |
2715 | Fortran case, so we'll have to replace this gdb_assert if | |
2716 | Fortran compilers start generating that info. */ | |
63d06c5c | 2717 | processing_has_namespace_info = 1; |
639d11d3 | 2718 | gdb_assert (die->child == NULL); |
d9fa45fe | 2719 | break; |
c906108c | 2720 | default: |
e7c27a73 | 2721 | new_symbol (die, NULL, cu); |
c906108c SS |
2722 | break; |
2723 | } | |
2724 | } | |
2725 | ||
5fb290d7 | 2726 | static void |
e142c38c | 2727 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2728 | { |
e142c38c | 2729 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2730 | } |
2731 | ||
c906108c | 2732 | static void |
e7c27a73 | 2733 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2734 | { |
e7c27a73 DJ |
2735 | struct objfile *objfile = cu->objfile; |
2736 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2737 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2738 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2739 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2740 | struct attribute *attr; | |
2741 | char *name = "<unknown>"; | |
2742 | char *comp_dir = NULL; | |
2743 | struct die_info *child_die; | |
2744 | bfd *abfd = objfile->obfd; | |
debd256d | 2745 | struct line_header *line_header = 0; |
e142c38c DJ |
2746 | CORE_ADDR baseaddr; |
2747 | ||
2748 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2749 | |
fae299cd | 2750 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2751 | |
2752 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2753 | from finish_block. */ | |
2acceee2 | 2754 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2755 | lowpc = highpc; |
2756 | lowpc += baseaddr; | |
2757 | highpc += baseaddr; | |
2758 | ||
e142c38c | 2759 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2760 | if (attr) |
2761 | { | |
2762 | name = DW_STRING (attr); | |
2763 | } | |
e142c38c | 2764 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c SS |
2765 | if (attr) |
2766 | { | |
2767 | comp_dir = DW_STRING (attr); | |
2768 | if (comp_dir) | |
2769 | { | |
2770 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2771 | directory, get rid of it. */ | |
2772 | char *cp = strchr (comp_dir, ':'); | |
2773 | ||
2774 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
2775 | comp_dir = cp + 1; | |
2776 | } | |
2777 | } | |
2778 | ||
e142c38c | 2779 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2780 | if (attr) |
2781 | { | |
e142c38c | 2782 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2783 | } |
2784 | ||
b0f35d58 DL |
2785 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
2786 | if (attr) | |
2787 | cu->producer = DW_STRING (attr); | |
2788 | ||
c906108c SS |
2789 | /* We assume that we're processing GCC output. */ |
2790 | processing_gcc_compilation = 2; | |
2791 | #if 0 | |
c5aa993b JM |
2792 | /* FIXME:Do something here. */ |
2793 | if (dip->at_producer != NULL) | |
c906108c SS |
2794 | { |
2795 | handle_producer (dip->at_producer); | |
2796 | } | |
2797 | #endif | |
2798 | ||
2799 | /* The compilation unit may be in a different language or objfile, | |
2800 | zero out all remembered fundamental types. */ | |
e142c38c | 2801 | memset (cu->ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *)); |
c906108c SS |
2802 | |
2803 | start_symtab (name, comp_dir, lowpc); | |
2804 | record_debugformat ("DWARF 2"); | |
2805 | ||
e142c38c | 2806 | initialize_cu_func_list (cu); |
c906108c SS |
2807 | |
2808 | /* Process all dies in compilation unit. */ | |
639d11d3 | 2809 | if (die->child != NULL) |
c906108c | 2810 | { |
639d11d3 | 2811 | child_die = die->child; |
c906108c SS |
2812 | while (child_die && child_die->tag) |
2813 | { | |
e7c27a73 | 2814 | process_die (child_die, cu); |
c906108c SS |
2815 | child_die = sibling_die (child_die); |
2816 | } | |
2817 | } | |
5fb290d7 DJ |
2818 | |
2819 | /* Decode line number information if present. */ | |
e142c38c | 2820 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2821 | if (attr) |
2822 | { | |
debd256d | 2823 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2824 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2825 | if (line_header) |
2826 | { | |
2827 | make_cleanup ((make_cleanup_ftype *) free_line_header, | |
2828 | (void *) line_header); | |
aaa75496 | 2829 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 2830 | } |
5fb290d7 | 2831 | } |
debd256d | 2832 | |
2e276125 JB |
2833 | /* Decode macro information, if present. Dwarf 2 macro information |
2834 | refers to information in the line number info statement program | |
2835 | header, so we can only read it if we've read the header | |
2836 | successfully. */ | |
e142c38c | 2837 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2838 | if (attr && line_header) |
2e276125 JB |
2839 | { |
2840 | unsigned int macro_offset = DW_UNSND (attr); | |
2841 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2842 | comp_dir, abfd, cu); |
2e276125 | 2843 | } |
debd256d | 2844 | do_cleanups (back_to); |
5fb290d7 DJ |
2845 | } |
2846 | ||
2847 | static void | |
e142c38c DJ |
2848 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2849 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2850 | { |
2851 | struct function_range *thisfn; | |
2852 | ||
2853 | thisfn = (struct function_range *) | |
7b5a2f43 | 2854 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
2855 | thisfn->name = name; |
2856 | thisfn->lowpc = lowpc; | |
2857 | thisfn->highpc = highpc; | |
2858 | thisfn->seen_line = 0; | |
2859 | thisfn->next = NULL; | |
2860 | ||
e142c38c DJ |
2861 | if (cu->last_fn == NULL) |
2862 | cu->first_fn = thisfn; | |
5fb290d7 | 2863 | else |
e142c38c | 2864 | cu->last_fn->next = thisfn; |
5fb290d7 | 2865 | |
e142c38c | 2866 | cu->last_fn = thisfn; |
c906108c SS |
2867 | } |
2868 | ||
2869 | static void | |
e7c27a73 | 2870 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2871 | { |
e7c27a73 | 2872 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2873 | struct context_stack *new; |
c906108c SS |
2874 | CORE_ADDR lowpc; |
2875 | CORE_ADDR highpc; | |
2876 | struct die_info *child_die; | |
2877 | struct attribute *attr; | |
2878 | char *name; | |
fdde2d81 DC |
2879 | const char *previous_prefix = processing_current_prefix; |
2880 | struct cleanup *back_to = NULL; | |
e142c38c | 2881 | CORE_ADDR baseaddr; |
c906108c | 2882 | |
e142c38c DJ |
2883 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2884 | ||
2885 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2886 | |
2887 | /* Ignore functions with missing or empty names and functions with | |
2888 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2889 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2890 | return; |
2891 | ||
987504bb JJ |
2892 | if (cu->language == language_cplus |
2893 | || cu->language == language_java) | |
fdde2d81 | 2894 | { |
086ed43d | 2895 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2896 | |
2a35147e JB |
2897 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2898 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2899 | given the code | |
2900 | ||
2901 | namespace N { | |
2902 | void foo() { | |
2903 | // Definition of N::foo. | |
2904 | } | |
2905 | } | |
2906 | ||
2907 | then we'll have a tree of DIEs like this: | |
2908 | ||
2909 | 1: DW_TAG_compile_unit | |
2910 | 2: DW_TAG_namespace // N | |
2911 | 3: DW_TAG_subprogram // declaration of N::foo | |
2912 | 4: DW_TAG_subprogram // definition of N::foo | |
2913 | DW_AT_specification // refers to die #3 | |
2914 | ||
2915 | Thus, when processing die #4, we have to pretend that we're | |
2916 | in the context of its DW_AT_specification, namely the contex | |
2917 | of die #3. */ | |
fdde2d81 DC |
2918 | |
2919 | if (spec_die != NULL) | |
2920 | { | |
e142c38c | 2921 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
2922 | processing_current_prefix = specification_prefix; |
2923 | back_to = make_cleanup (xfree, specification_prefix); | |
2924 | } | |
2925 | } | |
2926 | ||
c906108c SS |
2927 | lowpc += baseaddr; |
2928 | highpc += baseaddr; | |
2929 | ||
5fb290d7 | 2930 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 2931 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 2932 | |
c906108c | 2933 | new = push_context (0, lowpc); |
e7c27a73 | 2934 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 2935 | |
4cecd739 DJ |
2936 | /* If there is a location expression for DW_AT_frame_base, record |
2937 | it. */ | |
e142c38c | 2938 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 2939 | if (attr) |
c034e007 AC |
2940 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
2941 | expression is being recorded directly in the function's symbol | |
2942 | and not in a separate frame-base object. I guess this hack is | |
2943 | to avoid adding some sort of frame-base adjunct/annex to the | |
2944 | function's symbol :-(. The problem with doing this is that it | |
2945 | results in a function symbol with a location expression that | |
2946 | has nothing to do with the location of the function, ouch! The | |
2947 | relationship should be: a function's symbol has-a frame base; a | |
2948 | frame-base has-a location expression. */ | |
e7c27a73 | 2949 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 2950 | |
e142c38c | 2951 | cu->list_in_scope = &local_symbols; |
c906108c | 2952 | |
639d11d3 | 2953 | if (die->child != NULL) |
c906108c | 2954 | { |
639d11d3 | 2955 | child_die = die->child; |
c906108c SS |
2956 | while (child_die && child_die->tag) |
2957 | { | |
e7c27a73 | 2958 | process_die (child_die, cu); |
c906108c SS |
2959 | child_die = sibling_die (child_die); |
2960 | } | |
2961 | } | |
2962 | ||
2963 | new = pop_context (); | |
2964 | /* Make a block for the local symbols within. */ | |
2965 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2966 | lowpc, highpc, objfile); | |
208d8187 JB |
2967 | |
2968 | /* In C++, we can have functions nested inside functions (e.g., when | |
2969 | a function declares a class that has methods). This means that | |
2970 | when we finish processing a function scope, we may need to go | |
2971 | back to building a containing block's symbol lists. */ | |
2972 | local_symbols = new->locals; | |
2973 | param_symbols = new->params; | |
2974 | ||
921e78cf JB |
2975 | /* If we've finished processing a top-level function, subsequent |
2976 | symbols go in the file symbol list. */ | |
2977 | if (outermost_context_p ()) | |
e142c38c | 2978 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
2979 | |
2980 | processing_current_prefix = previous_prefix; | |
2981 | if (back_to != NULL) | |
2982 | do_cleanups (back_to); | |
c906108c SS |
2983 | } |
2984 | ||
2985 | /* Process all the DIES contained within a lexical block scope. Start | |
2986 | a new scope, process the dies, and then close the scope. */ | |
2987 | ||
2988 | static void | |
e7c27a73 | 2989 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2990 | { |
e7c27a73 | 2991 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2992 | struct context_stack *new; |
c906108c SS |
2993 | CORE_ADDR lowpc, highpc; |
2994 | struct die_info *child_die; | |
e142c38c DJ |
2995 | CORE_ADDR baseaddr; |
2996 | ||
2997 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2998 | |
2999 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
3000 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
3001 | as multiple lexical blocks? Handling children in a sane way would | |
3002 | be nasty. Might be easier to properly extend generic blocks to | |
3003 | describe ranges. */ | |
e7c27a73 | 3004 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
3005 | return; |
3006 | lowpc += baseaddr; | |
3007 | highpc += baseaddr; | |
3008 | ||
3009 | push_context (0, lowpc); | |
639d11d3 | 3010 | if (die->child != NULL) |
c906108c | 3011 | { |
639d11d3 | 3012 | child_die = die->child; |
c906108c SS |
3013 | while (child_die && child_die->tag) |
3014 | { | |
e7c27a73 | 3015 | process_die (child_die, cu); |
c906108c SS |
3016 | child_die = sibling_die (child_die); |
3017 | } | |
3018 | } | |
3019 | new = pop_context (); | |
3020 | ||
3021 | if (local_symbols != NULL) | |
3022 | { | |
3023 | finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
3024 | highpc, objfile); | |
3025 | } | |
3026 | local_symbols = new->locals; | |
3027 | } | |
3028 | ||
af34e669 DJ |
3029 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
3030 | are present and valid, otherwise, return 0. Return -1 if the range is | |
3031 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 3032 | static int |
af34e669 | 3033 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 3034 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c | 3035 | { |
e7c27a73 DJ |
3036 | struct objfile *objfile = cu->objfile; |
3037 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 3038 | struct attribute *attr; |
af34e669 DJ |
3039 | bfd *obfd = objfile->obfd; |
3040 | CORE_ADDR low = 0; | |
3041 | CORE_ADDR high = 0; | |
3042 | int ret = 0; | |
c906108c | 3043 | |
e142c38c | 3044 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 3045 | if (attr) |
af34e669 DJ |
3046 | { |
3047 | high = DW_ADDR (attr); | |
e142c38c | 3048 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
3049 | if (attr) |
3050 | low = DW_ADDR (attr); | |
3051 | else | |
3052 | /* Found high w/o low attribute. */ | |
3053 | return 0; | |
3054 | ||
3055 | /* Found consecutive range of addresses. */ | |
3056 | ret = 1; | |
3057 | } | |
c906108c | 3058 | else |
af34e669 | 3059 | { |
e142c38c | 3060 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
3061 | if (attr != NULL) |
3062 | { | |
3063 | unsigned int addr_size = cu_header->addr_size; | |
3064 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3065 | /* Value of the DW_AT_ranges attribute is the offset in the | |
a604369a | 3066 | .debug_ranges section. */ |
af34e669 DJ |
3067 | unsigned int offset = DW_UNSND (attr); |
3068 | /* Base address selection entry. */ | |
0d53c4c4 DJ |
3069 | CORE_ADDR base; |
3070 | int found_base; | |
891d2f0b | 3071 | unsigned int dummy; |
fe1b8b76 | 3072 | gdb_byte *buffer; |
af34e669 DJ |
3073 | CORE_ADDR marker; |
3074 | int low_set; | |
3075 | ||
0d53c4c4 DJ |
3076 | found_base = cu_header->base_known; |
3077 | base = cu_header->base_address; | |
a604369a | 3078 | |
6502dd73 | 3079 | if (offset >= dwarf2_per_objfile->ranges_size) |
a604369a KB |
3080 | { |
3081 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3082 | _("Offset %d out of bounds for DW_AT_ranges attribute"), |
a604369a KB |
3083 | offset); |
3084 | return 0; | |
3085 | } | |
6502dd73 | 3086 | buffer = dwarf2_per_objfile->ranges_buffer + offset; |
af34e669 | 3087 | |
af34e669 | 3088 | /* Read in the largest possible address. */ |
e7c27a73 | 3089 | marker = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
3090 | if ((marker & mask) == mask) |
3091 | { | |
3092 | /* If we found the largest possible address, then | |
3093 | read the base address. */ | |
e7c27a73 | 3094 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
3095 | buffer += 2 * addr_size; |
3096 | offset += 2 * addr_size; | |
3097 | found_base = 1; | |
3098 | } | |
3099 | ||
3100 | low_set = 0; | |
3101 | ||
3102 | while (1) | |
3103 | { | |
3104 | CORE_ADDR range_beginning, range_end; | |
3105 | ||
e7c27a73 | 3106 | range_beginning = read_address (obfd, buffer, cu, &dummy); |
af34e669 | 3107 | buffer += addr_size; |
e7c27a73 | 3108 | range_end = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
3109 | buffer += addr_size; |
3110 | offset += 2 * addr_size; | |
3111 | ||
3112 | /* An end of list marker is a pair of zero addresses. */ | |
3113 | if (range_beginning == 0 && range_end == 0) | |
3114 | /* Found the end of list entry. */ | |
3115 | break; | |
3116 | ||
3117 | /* Each base address selection entry is a pair of 2 values. | |
3118 | The first is the largest possible address, the second is | |
3119 | the base address. Check for a base address here. */ | |
3120 | if ((range_beginning & mask) == mask) | |
3121 | { | |
3122 | /* If we found the largest possible address, then | |
3123 | read the base address. */ | |
e7c27a73 | 3124 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
3125 | found_base = 1; |
3126 | continue; | |
3127 | } | |
3128 | ||
3129 | if (!found_base) | |
3130 | { | |
3131 | /* We have no valid base address for the ranges | |
3132 | data. */ | |
3133 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3134 | _("Invalid .debug_ranges data (no base address)")); |
af34e669 DJ |
3135 | return 0; |
3136 | } | |
3137 | ||
8f05cde5 DJ |
3138 | range_beginning += base; |
3139 | range_end += base; | |
3140 | ||
af34e669 DJ |
3141 | /* FIXME: This is recording everything as a low-high |
3142 | segment of consecutive addresses. We should have a | |
3143 | data structure for discontiguous block ranges | |
3144 | instead. */ | |
3145 | if (! low_set) | |
3146 | { | |
3147 | low = range_beginning; | |
3148 | high = range_end; | |
3149 | low_set = 1; | |
3150 | } | |
3151 | else | |
3152 | { | |
3153 | if (range_beginning < low) | |
3154 | low = range_beginning; | |
3155 | if (range_end > high) | |
3156 | high = range_end; | |
3157 | } | |
3158 | } | |
3159 | ||
3160 | if (! low_set) | |
3161 | /* If the first entry is an end-of-list marker, the range | |
3162 | describes an empty scope, i.e. no instructions. */ | |
3163 | return 0; | |
3164 | ||
3165 | ret = -1; | |
3166 | } | |
3167 | } | |
c906108c SS |
3168 | |
3169 | if (high < low) | |
3170 | return 0; | |
3171 | ||
3172 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
3173 | eliminate duplicate copies of functions and vtables and such. | |
3174 | The linker will arbitrarily choose one and discard the others. | |
3175 | The AT_*_pc values for such functions refer to local labels in | |
3176 | these sections. If the section from that file was discarded, the | |
3177 | labels are not in the output, so the relocs get a value of 0. | |
3178 | If this is a discarded function, mark the pc bounds as invalid, | |
3179 | so that GDB will ignore it. */ | |
af34e669 | 3180 | if (low == 0 && (bfd_get_file_flags (obfd) & HAS_RELOC) == 0) |
c906108c SS |
3181 | return 0; |
3182 | ||
3183 | *lowpc = low; | |
3184 | *highpc = high; | |
af34e669 | 3185 | return ret; |
c906108c SS |
3186 | } |
3187 | ||
fae299cd DC |
3188 | /* Get the low and high pc's represented by the scope DIE, and store |
3189 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
3190 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
3191 | ||
3192 | static void | |
3193 | get_scope_pc_bounds (struct die_info *die, | |
3194 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3195 | struct dwarf2_cu *cu) | |
3196 | { | |
3197 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
3198 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
3199 | CORE_ADDR current_low, current_high; | |
3200 | ||
3201 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
3202 | { | |
3203 | best_low = current_low; | |
3204 | best_high = current_high; | |
3205 | } | |
3206 | else | |
3207 | { | |
3208 | struct die_info *child = die->child; | |
3209 | ||
3210 | while (child && child->tag) | |
3211 | { | |
3212 | switch (child->tag) { | |
3213 | case DW_TAG_subprogram: | |
3214 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
3215 | { | |
3216 | best_low = min (best_low, current_low); | |
3217 | best_high = max (best_high, current_high); | |
3218 | } | |
3219 | break; | |
3220 | case DW_TAG_namespace: | |
3221 | /* FIXME: carlton/2004-01-16: Should we do this for | |
3222 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
3223 | that current GCC's always emit the DIEs corresponding | |
3224 | to definitions of methods of classes as children of a | |
3225 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
3226 | the DIEs giving the declarations, which could be | |
3227 | anywhere). But I don't see any reason why the | |
3228 | standards says that they have to be there. */ | |
3229 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
3230 | ||
3231 | if (current_low != ((CORE_ADDR) -1)) | |
3232 | { | |
3233 | best_low = min (best_low, current_low); | |
3234 | best_high = max (best_high, current_high); | |
3235 | } | |
3236 | break; | |
3237 | default: | |
3238 | /* Ignore. */ | |
3239 | break; | |
3240 | } | |
3241 | ||
3242 | child = sibling_die (child); | |
3243 | } | |
3244 | } | |
3245 | ||
3246 | *lowpc = best_low; | |
3247 | *highpc = best_high; | |
3248 | } | |
3249 | ||
c906108c SS |
3250 | /* Add an aggregate field to the field list. */ |
3251 | ||
3252 | static void | |
107d2387 | 3253 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
3254 | struct dwarf2_cu *cu) |
3255 | { | |
3256 | struct objfile *objfile = cu->objfile; | |
c906108c SS |
3257 | struct nextfield *new_field; |
3258 | struct attribute *attr; | |
3259 | struct field *fp; | |
3260 | char *fieldname = ""; | |
3261 | ||
3262 | /* Allocate a new field list entry and link it in. */ | |
3263 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3264 | make_cleanup (xfree, new_field); |
c906108c SS |
3265 | memset (new_field, 0, sizeof (struct nextfield)); |
3266 | new_field->next = fip->fields; | |
3267 | fip->fields = new_field; | |
3268 | fip->nfields++; | |
3269 | ||
3270 | /* Handle accessibility and virtuality of field. | |
3271 | The default accessibility for members is public, the default | |
3272 | accessibility for inheritance is private. */ | |
3273 | if (die->tag != DW_TAG_inheritance) | |
3274 | new_field->accessibility = DW_ACCESS_public; | |
3275 | else | |
3276 | new_field->accessibility = DW_ACCESS_private; | |
3277 | new_field->virtuality = DW_VIRTUALITY_none; | |
3278 | ||
e142c38c | 3279 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3280 | if (attr) |
3281 | new_field->accessibility = DW_UNSND (attr); | |
3282 | if (new_field->accessibility != DW_ACCESS_public) | |
3283 | fip->non_public_fields = 1; | |
e142c38c | 3284 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
3285 | if (attr) |
3286 | new_field->virtuality = DW_UNSND (attr); | |
3287 | ||
3288 | fp = &new_field->field; | |
a9a9bd0f | 3289 | |
e142c38c | 3290 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 3291 | { |
a9a9bd0f DC |
3292 | /* Data member other than a C++ static data member. */ |
3293 | ||
c906108c | 3294 | /* Get type of field. */ |
e7c27a73 | 3295 | fp->type = die_type (die, cu); |
c906108c | 3296 | |
01ad7f36 DJ |
3297 | FIELD_STATIC_KIND (*fp) = 0; |
3298 | ||
c906108c | 3299 | /* Get bit size of field (zero if none). */ |
e142c38c | 3300 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
3301 | if (attr) |
3302 | { | |
3303 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
3304 | } | |
3305 | else | |
3306 | { | |
3307 | FIELD_BITSIZE (*fp) = 0; | |
3308 | } | |
3309 | ||
3310 | /* Get bit offset of field. */ | |
e142c38c | 3311 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
3312 | if (attr) |
3313 | { | |
3314 | FIELD_BITPOS (*fp) = | |
e7c27a73 | 3315 | decode_locdesc (DW_BLOCK (attr), cu) * bits_per_byte; |
c906108c SS |
3316 | } |
3317 | else | |
3318 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 3319 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
3320 | if (attr) |
3321 | { | |
3322 | if (BITS_BIG_ENDIAN) | |
3323 | { | |
3324 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
3325 | additional bit offset from the MSB of the containing |
3326 | anonymous object to the MSB of the field. We don't | |
3327 | have to do anything special since we don't need to | |
3328 | know the size of the anonymous object. */ | |
c906108c SS |
3329 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
3330 | } | |
3331 | else | |
3332 | { | |
3333 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
3334 | MSB of the anonymous object, subtract off the number of |
3335 | bits from the MSB of the field to the MSB of the | |
3336 | object, and then subtract off the number of bits of | |
3337 | the field itself. The result is the bit offset of | |
3338 | the LSB of the field. */ | |
c906108c SS |
3339 | int anonymous_size; |
3340 | int bit_offset = DW_UNSND (attr); | |
3341 | ||
e142c38c | 3342 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3343 | if (attr) |
3344 | { | |
3345 | /* The size of the anonymous object containing | |
3346 | the bit field is explicit, so use the | |
3347 | indicated size (in bytes). */ | |
3348 | anonymous_size = DW_UNSND (attr); | |
3349 | } | |
3350 | else | |
3351 | { | |
3352 | /* The size of the anonymous object containing | |
3353 | the bit field must be inferred from the type | |
3354 | attribute of the data member containing the | |
3355 | bit field. */ | |
3356 | anonymous_size = TYPE_LENGTH (fp->type); | |
3357 | } | |
3358 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
3359 | - bit_offset - FIELD_BITSIZE (*fp); | |
3360 | } | |
3361 | } | |
3362 | ||
3363 | /* Get name of field. */ | |
e142c38c | 3364 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3365 | if (attr && DW_STRING (attr)) |
3366 | fieldname = DW_STRING (attr); | |
d8151005 DJ |
3367 | |
3368 | /* The name is already allocated along with this objfile, so we don't | |
3369 | need to duplicate it for the type. */ | |
3370 | fp->name = fieldname; | |
c906108c SS |
3371 | |
3372 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 3373 | pointer or virtual base class pointer) to private. */ |
e142c38c | 3374 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
3375 | { |
3376 | new_field->accessibility = DW_ACCESS_private; | |
3377 | fip->non_public_fields = 1; | |
3378 | } | |
3379 | } | |
a9a9bd0f | 3380 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 3381 | { |
a9a9bd0f DC |
3382 | /* C++ static member. */ |
3383 | ||
3384 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
3385 | is a declaration, but all versions of G++ as of this writing | |
3386 | (so through at least 3.2.1) incorrectly generate | |
3387 | DW_TAG_variable tags. */ | |
3388 | ||
c906108c | 3389 | char *physname; |
c906108c | 3390 | |
a9a9bd0f | 3391 | /* Get name of field. */ |
e142c38c | 3392 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
3393 | if (attr && DW_STRING (attr)) |
3394 | fieldname = DW_STRING (attr); | |
3395 | else | |
c906108c SS |
3396 | return; |
3397 | ||
2df3850c | 3398 | /* Get physical name. */ |
e142c38c | 3399 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 3400 | |
d8151005 DJ |
3401 | /* The name is already allocated along with this objfile, so we don't |
3402 | need to duplicate it for the type. */ | |
3403 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 3404 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 3405 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
3406 | } |
3407 | else if (die->tag == DW_TAG_inheritance) | |
3408 | { | |
3409 | /* C++ base class field. */ | |
e142c38c | 3410 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 3411 | if (attr) |
e7c27a73 | 3412 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 3413 | * bits_per_byte); |
c906108c | 3414 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 3415 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 3416 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
3417 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
3418 | fip->nbaseclasses++; | |
3419 | } | |
3420 | } | |
3421 | ||
3422 | /* Create the vector of fields, and attach it to the type. */ | |
3423 | ||
3424 | static void | |
fba45db2 | 3425 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3426 | struct dwarf2_cu *cu) |
c906108c SS |
3427 | { |
3428 | int nfields = fip->nfields; | |
3429 | ||
3430 | /* Record the field count, allocate space for the array of fields, | |
3431 | and create blank accessibility bitfields if necessary. */ | |
3432 | TYPE_NFIELDS (type) = nfields; | |
3433 | TYPE_FIELDS (type) = (struct field *) | |
3434 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3435 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3436 | ||
3437 | if (fip->non_public_fields) | |
3438 | { | |
3439 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3440 | ||
3441 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3442 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3443 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3444 | ||
3445 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3446 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3447 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3448 | ||
3449 | TYPE_FIELD_IGNORE_BITS (type) = | |
3450 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3451 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3452 | } | |
3453 | ||
3454 | /* If the type has baseclasses, allocate and clear a bit vector for | |
3455 | TYPE_FIELD_VIRTUAL_BITS. */ | |
3456 | if (fip->nbaseclasses) | |
3457 | { | |
3458 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 3459 | unsigned char *pointer; |
c906108c SS |
3460 | |
3461 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
3462 | pointer = TYPE_ALLOC (type, num_bytes); |
3463 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
3464 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
3465 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
3466 | } | |
3467 | ||
3468 | /* Copy the saved-up fields into the field vector. Start from the head | |
3469 | of the list, adding to the tail of the field array, so that they end | |
3470 | up in the same order in the array in which they were added to the list. */ | |
3471 | while (nfields-- > 0) | |
3472 | { | |
3473 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
3474 | switch (fip->fields->accessibility) | |
3475 | { | |
c5aa993b JM |
3476 | case DW_ACCESS_private: |
3477 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3478 | break; | |
c906108c | 3479 | |
c5aa993b JM |
3480 | case DW_ACCESS_protected: |
3481 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3482 | break; | |
c906108c | 3483 | |
c5aa993b JM |
3484 | case DW_ACCESS_public: |
3485 | break; | |
c906108c | 3486 | |
c5aa993b JM |
3487 | default: |
3488 | /* Unknown accessibility. Complain and treat it as public. */ | |
3489 | { | |
e2e0b3e5 | 3490 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
4d3c2250 | 3491 | fip->fields->accessibility); |
c5aa993b JM |
3492 | } |
3493 | break; | |
c906108c SS |
3494 | } |
3495 | if (nfields < fip->nbaseclasses) | |
3496 | { | |
3497 | switch (fip->fields->virtuality) | |
3498 | { | |
c5aa993b JM |
3499 | case DW_VIRTUALITY_virtual: |
3500 | case DW_VIRTUALITY_pure_virtual: | |
3501 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
3502 | break; | |
c906108c SS |
3503 | } |
3504 | } | |
3505 | fip->fields = fip->fields->next; | |
3506 | } | |
3507 | } | |
3508 | ||
c906108c SS |
3509 | /* Add a member function to the proper fieldlist. */ |
3510 | ||
3511 | static void | |
107d2387 | 3512 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 3513 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 3514 | { |
e7c27a73 | 3515 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3516 | struct attribute *attr; |
3517 | struct fnfieldlist *flp; | |
3518 | int i; | |
3519 | struct fn_field *fnp; | |
3520 | char *fieldname; | |
3521 | char *physname; | |
3522 | struct nextfnfield *new_fnfield; | |
3523 | ||
2df3850c | 3524 | /* Get name of member function. */ |
e142c38c | 3525 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
3526 | if (attr && DW_STRING (attr)) |
3527 | fieldname = DW_STRING (attr); | |
c906108c | 3528 | else |
2df3850c | 3529 | return; |
c906108c | 3530 | |
2df3850c | 3531 | /* Get the mangled name. */ |
e142c38c | 3532 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
3533 | |
3534 | /* Look up member function name in fieldlist. */ | |
3535 | for (i = 0; i < fip->nfnfields; i++) | |
3536 | { | |
27bfe10e | 3537 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
3538 | break; |
3539 | } | |
3540 | ||
3541 | /* Create new list element if necessary. */ | |
3542 | if (i < fip->nfnfields) | |
3543 | flp = &fip->fnfieldlists[i]; | |
3544 | else | |
3545 | { | |
3546 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3547 | { | |
3548 | fip->fnfieldlists = (struct fnfieldlist *) | |
3549 | xrealloc (fip->fnfieldlists, | |
3550 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3551 | * sizeof (struct fnfieldlist)); |
c906108c | 3552 | if (fip->nfnfields == 0) |
c13c43fd | 3553 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
3554 | } |
3555 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
3556 | flp->name = fieldname; | |
3557 | flp->length = 0; | |
3558 | flp->head = NULL; | |
3559 | fip->nfnfields++; | |
3560 | } | |
3561 | ||
3562 | /* Create a new member function field and chain it to the field list | |
3563 | entry. */ | |
3564 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 3565 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
3566 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
3567 | new_fnfield->next = flp->head; | |
3568 | flp->head = new_fnfield; | |
3569 | flp->length++; | |
3570 | ||
3571 | /* Fill in the member function field info. */ | |
3572 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
3573 | /* The name is already allocated along with this objfile, so we don't |
3574 | need to duplicate it for the type. */ | |
3575 | fnp->physname = physname ? physname : ""; | |
c906108c SS |
3576 | fnp->type = alloc_type (objfile); |
3577 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
3578 | { | |
c906108c | 3579 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 3580 | |
e26fb1d7 DC |
3581 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
3582 | of the method itself (TYPE_CODE_METHOD). */ | |
3583 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
3584 | TYPE_TARGET_TYPE (die->type), |
3585 | TYPE_FIELDS (die->type), | |
3586 | TYPE_NFIELDS (die->type), | |
3587 | TYPE_VARARGS (die->type)); | |
c906108c SS |
3588 | |
3589 | /* Handle static member functions. | |
c5aa993b JM |
3590 | Dwarf2 has no clean way to discern C++ static and non-static |
3591 | member functions. G++ helps GDB by marking the first | |
3592 | parameter for non-static member functions (which is the | |
3593 | this pointer) as artificial. We obtain this information | |
3594 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
3595 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
3596 | fnp->voffset = VOFFSET_STATIC; | |
3597 | } | |
3598 | else | |
e2e0b3e5 | 3599 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 3600 | physname); |
c906108c SS |
3601 | |
3602 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 3603 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 3604 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
3605 | |
3606 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
3607 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
3608 | ||
3609 | /* Get accessibility. */ | |
e142c38c | 3610 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3611 | if (attr) |
3612 | { | |
3613 | switch (DW_UNSND (attr)) | |
3614 | { | |
c5aa993b JM |
3615 | case DW_ACCESS_private: |
3616 | fnp->is_private = 1; | |
3617 | break; | |
3618 | case DW_ACCESS_protected: | |
3619 | fnp->is_protected = 1; | |
3620 | break; | |
c906108c SS |
3621 | } |
3622 | } | |
3623 | ||
b02dede2 | 3624 | /* Check for artificial methods. */ |
e142c38c | 3625 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3626 | if (attr && DW_UNSND (attr) != 0) |
3627 | fnp->is_artificial = 1; | |
3628 | ||
c906108c | 3629 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3630 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3631 | if (attr) |
8e19ed76 PS |
3632 | { |
3633 | /* Support the .debug_loc offsets */ | |
3634 | if (attr_form_is_block (attr)) | |
3635 | { | |
e7c27a73 | 3636 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 PS |
3637 | } |
3638 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3639 | { | |
4d3c2250 | 3640 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3641 | } |
3642 | else | |
3643 | { | |
4d3c2250 KB |
3644 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3645 | fieldname); | |
8e19ed76 PS |
3646 | } |
3647 | } | |
c906108c SS |
3648 | } |
3649 | ||
3650 | /* Create the vector of member function fields, and attach it to the type. */ | |
3651 | ||
3652 | static void | |
fba45db2 | 3653 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3654 | struct dwarf2_cu *cu) |
c906108c SS |
3655 | { |
3656 | struct fnfieldlist *flp; | |
3657 | int total_length = 0; | |
3658 | int i; | |
3659 | ||
3660 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3661 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
3662 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
3663 | ||
3664 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
3665 | { | |
3666 | struct nextfnfield *nfp = flp->head; | |
3667 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
3668 | int k; | |
3669 | ||
3670 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
3671 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
3672 | fn_flp->fn_fields = (struct fn_field *) | |
3673 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
3674 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 3675 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
3676 | |
3677 | total_length += flp->length; | |
3678 | } | |
3679 | ||
3680 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
3681 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
3682 | } | |
3683 | ||
1168df01 JB |
3684 | |
3685 | /* Returns non-zero if NAME is the name of a vtable member in CU's | |
3686 | language, zero otherwise. */ | |
3687 | static int | |
3688 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
3689 | { | |
3690 | static const char vptr[] = "_vptr"; | |
987504bb | 3691 | static const char vtable[] = "vtable"; |
1168df01 | 3692 | |
987504bb JJ |
3693 | /* Look for the C++ and Java forms of the vtable. */ |
3694 | if ((cu->language == language_java | |
3695 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
3696 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
3697 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
3698 | return 1; |
3699 | ||
3700 | return 0; | |
3701 | } | |
3702 | ||
3703 | ||
c906108c SS |
3704 | /* Called when we find the DIE that starts a structure or union scope |
3705 | (definition) to process all dies that define the members of the | |
3706 | structure or union. | |
3707 | ||
3708 | NOTE: we need to call struct_type regardless of whether or not the | |
3709 | DIE has an at_name attribute, since it might be an anonymous | |
3710 | structure or union. This gets the type entered into our set of | |
3711 | user defined types. | |
3712 | ||
3713 | However, if the structure is incomplete (an opaque struct/union) | |
3714 | then suppress creating a symbol table entry for it since gdb only | |
3715 | wants to find the one with the complete definition. Note that if | |
3716 | it is complete, we just call new_symbol, which does it's own | |
3717 | checking about whether the struct/union is anonymous or not (and | |
3718 | suppresses creating a symbol table entry itself). */ | |
3719 | ||
3720 | static void | |
134d01f1 | 3721 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3722 | { |
e7c27a73 | 3723 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3724 | struct type *type; |
3725 | struct attribute *attr; | |
63d06c5c DC |
3726 | const char *previous_prefix = processing_current_prefix; |
3727 | struct cleanup *back_to = NULL; | |
c906108c | 3728 | |
134d01f1 DJ |
3729 | if (die->type) |
3730 | return; | |
3731 | ||
c906108c SS |
3732 | type = alloc_type (objfile); |
3733 | ||
3734 | INIT_CPLUS_SPECIFIC (type); | |
e142c38c | 3735 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3736 | if (attr && DW_STRING (attr)) |
3737 | { | |
987504bb JJ |
3738 | if (cu->language == language_cplus |
3739 | || cu->language == language_java) | |
63d06c5c | 3740 | { |
8176b9b8 DC |
3741 | char *new_prefix = determine_class_name (die, cu); |
3742 | TYPE_TAG_NAME (type) = obsavestring (new_prefix, | |
3743 | strlen (new_prefix), | |
3744 | &objfile->objfile_obstack); | |
3745 | back_to = make_cleanup (xfree, new_prefix); | |
63d06c5c DC |
3746 | processing_current_prefix = new_prefix; |
3747 | } | |
3748 | else | |
3749 | { | |
d8151005 DJ |
3750 | /* The name is already allocated along with this objfile, so |
3751 | we don't need to duplicate it for the type. */ | |
8176b9b8 | 3752 | TYPE_TAG_NAME (type) = DW_STRING (attr); |
63d06c5c | 3753 | } |
c906108c SS |
3754 | } |
3755 | ||
3756 | if (die->tag == DW_TAG_structure_type) | |
3757 | { | |
3758 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
3759 | } | |
3760 | else if (die->tag == DW_TAG_union_type) | |
3761 | { | |
3762 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
3763 | } | |
3764 | else | |
3765 | { | |
3766 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 3767 | in gdbtypes.h. */ |
c906108c SS |
3768 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
3769 | } | |
3770 | ||
e142c38c | 3771 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3772 | if (attr) |
3773 | { | |
3774 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3775 | } | |
3776 | else | |
3777 | { | |
3778 | TYPE_LENGTH (type) = 0; | |
3779 | } | |
3780 | ||
dc718098 JB |
3781 | if (die_is_declaration (die, cu)) |
3782 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
3783 | ||
c906108c SS |
3784 | /* We need to add the type field to the die immediately so we don't |
3785 | infinitely recurse when dealing with pointers to the structure | |
3786 | type within the structure itself. */ | |
1c379e20 | 3787 | set_die_type (die, type, cu); |
c906108c | 3788 | |
e142c38c | 3789 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
3790 | { |
3791 | struct field_info fi; | |
3792 | struct die_info *child_die; | |
3793 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
3794 | ||
3795 | memset (&fi, 0, sizeof (struct field_info)); | |
3796 | ||
639d11d3 | 3797 | child_die = die->child; |
c906108c SS |
3798 | |
3799 | while (child_die && child_die->tag) | |
3800 | { | |
a9a9bd0f DC |
3801 | if (child_die->tag == DW_TAG_member |
3802 | || child_die->tag == DW_TAG_variable) | |
c906108c | 3803 | { |
a9a9bd0f DC |
3804 | /* NOTE: carlton/2002-11-05: A C++ static data member |
3805 | should be a DW_TAG_member that is a declaration, but | |
3806 | all versions of G++ as of this writing (so through at | |
3807 | least 3.2.1) incorrectly generate DW_TAG_variable | |
3808 | tags for them instead. */ | |
e7c27a73 | 3809 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3810 | } |
8713b1b1 | 3811 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
3812 | { |
3813 | /* C++ member function. */ | |
134d01f1 | 3814 | read_type_die (child_die, cu); |
e7c27a73 | 3815 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
3816 | } |
3817 | else if (child_die->tag == DW_TAG_inheritance) | |
3818 | { | |
3819 | /* C++ base class field. */ | |
e7c27a73 | 3820 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3821 | } |
c906108c SS |
3822 | child_die = sibling_die (child_die); |
3823 | } | |
3824 | ||
3825 | /* Attach fields and member functions to the type. */ | |
3826 | if (fi.nfields) | |
e7c27a73 | 3827 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
3828 | if (fi.nfnfields) |
3829 | { | |
e7c27a73 | 3830 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 3831 | |
c5aa993b | 3832 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
3833 | class itself) which contains the vtable pointer for the current |
3834 | class from the DW_AT_containing_type attribute. */ | |
3835 | ||
e142c38c | 3836 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 3837 | { |
e7c27a73 | 3838 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
3839 | |
3840 | TYPE_VPTR_BASETYPE (type) = t; | |
3841 | if (type == t) | |
3842 | { | |
c906108c SS |
3843 | int i; |
3844 | ||
3845 | /* Our own class provides vtbl ptr. */ | |
3846 | for (i = TYPE_NFIELDS (t) - 1; | |
3847 | i >= TYPE_N_BASECLASSES (t); | |
3848 | --i) | |
3849 | { | |
3850 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
3851 | ||
1168df01 | 3852 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
3853 | { |
3854 | TYPE_VPTR_FIELDNO (type) = i; | |
3855 | break; | |
3856 | } | |
3857 | } | |
3858 | ||
3859 | /* Complain if virtual function table field not found. */ | |
3860 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 3861 | complaint (&symfile_complaints, |
e2e0b3e5 | 3862 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
3863 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
3864 | ""); | |
c906108c SS |
3865 | } |
3866 | else | |
3867 | { | |
3868 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3869 | } | |
3870 | } | |
f6235d4c EZ |
3871 | else if (cu->producer |
3872 | && strncmp (cu->producer, | |
3873 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
3874 | { | |
3875 | /* The IBM XLC compiler does not provide direct indication | |
3876 | of the containing type, but the vtable pointer is | |
3877 | always named __vfp. */ | |
3878 | ||
3879 | int i; | |
3880 | ||
3881 | for (i = TYPE_NFIELDS (type) - 1; | |
3882 | i >= TYPE_N_BASECLASSES (type); | |
3883 | --i) | |
3884 | { | |
3885 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
3886 | { | |
3887 | TYPE_VPTR_FIELDNO (type) = i; | |
3888 | TYPE_VPTR_BASETYPE (type) = type; | |
3889 | break; | |
3890 | } | |
3891 | } | |
3892 | } | |
c906108c SS |
3893 | } |
3894 | ||
c906108c SS |
3895 | do_cleanups (back_to); |
3896 | } | |
63d06c5c DC |
3897 | |
3898 | processing_current_prefix = previous_prefix; | |
3899 | if (back_to != NULL) | |
3900 | do_cleanups (back_to); | |
c906108c SS |
3901 | } |
3902 | ||
134d01f1 DJ |
3903 | static void |
3904 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
3905 | { | |
3906 | struct objfile *objfile = cu->objfile; | |
3907 | const char *previous_prefix = processing_current_prefix; | |
90aeadfc | 3908 | struct die_info *child_die = die->child; |
c906108c | 3909 | |
134d01f1 DJ |
3910 | if (TYPE_TAG_NAME (die->type) != NULL) |
3911 | processing_current_prefix = TYPE_TAG_NAME (die->type); | |
c906108c | 3912 | |
90aeadfc DC |
3913 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
3914 | snapshots) has been known to create a die giving a declaration | |
3915 | for a class that has, as a child, a die giving a definition for a | |
3916 | nested class. So we have to process our children even if the | |
3917 | current die is a declaration. Normally, of course, a declaration | |
3918 | won't have any children at all. */ | |
134d01f1 | 3919 | |
90aeadfc DC |
3920 | while (child_die != NULL && child_die->tag) |
3921 | { | |
3922 | if (child_die->tag == DW_TAG_member | |
3923 | || child_die->tag == DW_TAG_variable | |
3924 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 3925 | { |
90aeadfc | 3926 | /* Do nothing. */ |
134d01f1 | 3927 | } |
90aeadfc DC |
3928 | else |
3929 | process_die (child_die, cu); | |
134d01f1 | 3930 | |
90aeadfc | 3931 | child_die = sibling_die (child_die); |
134d01f1 DJ |
3932 | } |
3933 | ||
90aeadfc DC |
3934 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
3935 | new_symbol (die, die->type, cu); | |
3936 | ||
134d01f1 DJ |
3937 | processing_current_prefix = previous_prefix; |
3938 | } | |
3939 | ||
3940 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
3941 | complete the type's fields yet, or create any symbols. */ | |
c906108c SS |
3942 | |
3943 | static void | |
134d01f1 | 3944 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3945 | { |
e7c27a73 | 3946 | struct objfile *objfile = cu->objfile; |
c906108c | 3947 | struct type *type; |
c906108c | 3948 | struct attribute *attr; |
134d01f1 DJ |
3949 | |
3950 | if (die->type) | |
3951 | return; | |
c906108c SS |
3952 | |
3953 | type = alloc_type (objfile); | |
3954 | ||
3955 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
e142c38c | 3956 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3957 | if (attr && DW_STRING (attr)) |
3958 | { | |
d8151005 | 3959 | char *name = DW_STRING (attr); |
63d06c5c DC |
3960 | |
3961 | if (processing_has_namespace_info) | |
3962 | { | |
987504bb JJ |
3963 | TYPE_TAG_NAME (type) = typename_concat (&objfile->objfile_obstack, |
3964 | processing_current_prefix, | |
3965 | name, cu); | |
63d06c5c DC |
3966 | } |
3967 | else | |
3968 | { | |
d8151005 DJ |
3969 | /* The name is already allocated along with this objfile, so |
3970 | we don't need to duplicate it for the type. */ | |
3971 | TYPE_TAG_NAME (type) = name; | |
63d06c5c | 3972 | } |
c906108c SS |
3973 | } |
3974 | ||
e142c38c | 3975 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3976 | if (attr) |
3977 | { | |
3978 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3979 | } | |
3980 | else | |
3981 | { | |
3982 | TYPE_LENGTH (type) = 0; | |
3983 | } | |
3984 | ||
1c379e20 | 3985 | set_die_type (die, type, cu); |
134d01f1 DJ |
3986 | } |
3987 | ||
8176b9b8 | 3988 | /* Determine the name of the type represented by DIE, which should be |
987504bb | 3989 | a named C++ or Java compound type. Return the name in question; the caller |
8176b9b8 DC |
3990 | is responsible for xfree()'ing it. */ |
3991 | ||
3992 | static char * | |
3993 | determine_class_name (struct die_info *die, struct dwarf2_cu *cu) | |
3994 | { | |
3995 | struct cleanup *back_to = NULL; | |
3996 | struct die_info *spec_die = die_specification (die, cu); | |
3997 | char *new_prefix = NULL; | |
3998 | ||
3999 | /* If this is the definition of a class that is declared by another | |
4000 | die, then processing_current_prefix may not be accurate; see | |
4001 | read_func_scope for a similar example. */ | |
4002 | if (spec_die != NULL) | |
4003 | { | |
4004 | char *specification_prefix = determine_prefix (spec_die, cu); | |
4005 | processing_current_prefix = specification_prefix; | |
4006 | back_to = make_cleanup (xfree, specification_prefix); | |
4007 | } | |
4008 | ||
4009 | /* If we don't have namespace debug info, guess the name by trying | |
4010 | to demangle the names of members, just like we did in | |
72bf9492 | 4011 | guess_structure_name. */ |
8176b9b8 DC |
4012 | if (!processing_has_namespace_info) |
4013 | { | |
4014 | struct die_info *child; | |
4015 | ||
4016 | for (child = die->child; | |
4017 | child != NULL && child->tag != 0; | |
4018 | child = sibling_die (child)) | |
4019 | { | |
4020 | if (child->tag == DW_TAG_subprogram) | |
4021 | { | |
31c27f77 JJ |
4022 | new_prefix |
4023 | = language_class_name_from_physname (cu->language_defn, | |
4024 | dwarf2_linkage_name | |
8176b9b8 DC |
4025 | (child, cu)); |
4026 | ||
4027 | if (new_prefix != NULL) | |
4028 | break; | |
4029 | } | |
4030 | } | |
4031 | } | |
4032 | ||
4033 | if (new_prefix == NULL) | |
4034 | { | |
4035 | const char *name = dwarf2_name (die, cu); | |
987504bb JJ |
4036 | new_prefix = typename_concat (NULL, processing_current_prefix, |
4037 | name ? name : "<<anonymous>>", | |
4038 | cu); | |
8176b9b8 DC |
4039 | } |
4040 | ||
4041 | if (back_to != NULL) | |
4042 | do_cleanups (back_to); | |
4043 | ||
4044 | return new_prefix; | |
4045 | } | |
4046 | ||
134d01f1 DJ |
4047 | /* Given a pointer to a die which begins an enumeration, process all |
4048 | the dies that define the members of the enumeration, and create the | |
4049 | symbol for the enumeration type. | |
4050 | ||
4051 | NOTE: We reverse the order of the element list. */ | |
4052 | ||
4053 | static void | |
4054 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4055 | { | |
4056 | struct objfile *objfile = cu->objfile; | |
4057 | struct die_info *child_die; | |
4058 | struct field *fields; | |
4059 | struct attribute *attr; | |
4060 | struct symbol *sym; | |
4061 | int num_fields; | |
4062 | int unsigned_enum = 1; | |
4063 | ||
c906108c SS |
4064 | num_fields = 0; |
4065 | fields = NULL; | |
639d11d3 | 4066 | if (die->child != NULL) |
c906108c | 4067 | { |
639d11d3 | 4068 | child_die = die->child; |
c906108c SS |
4069 | while (child_die && child_die->tag) |
4070 | { | |
4071 | if (child_die->tag != DW_TAG_enumerator) | |
4072 | { | |
e7c27a73 | 4073 | process_die (child_die, cu); |
c906108c SS |
4074 | } |
4075 | else | |
4076 | { | |
e142c38c | 4077 | attr = dwarf2_attr (child_die, DW_AT_name, cu); |
c906108c SS |
4078 | if (attr) |
4079 | { | |
134d01f1 | 4080 | sym = new_symbol (child_die, die->type, cu); |
c906108c SS |
4081 | if (SYMBOL_VALUE (sym) < 0) |
4082 | unsigned_enum = 0; | |
4083 | ||
4084 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4085 | { | |
4086 | fields = (struct field *) | |
4087 | xrealloc (fields, | |
4088 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4089 | * sizeof (struct field)); |
c906108c SS |
4090 | } |
4091 | ||
22abf04a | 4092 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
4093 | FIELD_TYPE (fields[num_fields]) = NULL; |
4094 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
4095 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 4096 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
4097 | |
4098 | num_fields++; | |
4099 | } | |
4100 | } | |
4101 | ||
4102 | child_die = sibling_die (child_die); | |
4103 | } | |
4104 | ||
4105 | if (num_fields) | |
4106 | { | |
134d01f1 DJ |
4107 | TYPE_NFIELDS (die->type) = num_fields; |
4108 | TYPE_FIELDS (die->type) = (struct field *) | |
4109 | TYPE_ALLOC (die->type, sizeof (struct field) * num_fields); | |
4110 | memcpy (TYPE_FIELDS (die->type), fields, | |
c906108c | 4111 | sizeof (struct field) * num_fields); |
b8c9b27d | 4112 | xfree (fields); |
c906108c SS |
4113 | } |
4114 | if (unsigned_enum) | |
134d01f1 | 4115 | TYPE_FLAGS (die->type) |= TYPE_FLAG_UNSIGNED; |
c906108c | 4116 | } |
134d01f1 DJ |
4117 | |
4118 | new_symbol (die, die->type, cu); | |
c906108c SS |
4119 | } |
4120 | ||
4121 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
4122 | the DIE's type field. For now, this only handles one dimensional | |
4123 | arrays. */ | |
4124 | ||
4125 | static void | |
e7c27a73 | 4126 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4127 | { |
e7c27a73 | 4128 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4129 | struct die_info *child_die; |
4130 | struct type *type = NULL; | |
4131 | struct type *element_type, *range_type, *index_type; | |
4132 | struct type **range_types = NULL; | |
4133 | struct attribute *attr; | |
4134 | int ndim = 0; | |
4135 | struct cleanup *back_to; | |
4136 | ||
4137 | /* Return if we've already decoded this type. */ | |
4138 | if (die->type) | |
4139 | { | |
4140 | return; | |
4141 | } | |
4142 | ||
e7c27a73 | 4143 | element_type = die_type (die, cu); |
c906108c SS |
4144 | |
4145 | /* Irix 6.2 native cc creates array types without children for | |
4146 | arrays with unspecified length. */ | |
639d11d3 | 4147 | if (die->child == NULL) |
c906108c | 4148 | { |
e142c38c | 4149 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 4150 | range_type = create_range_type (NULL, index_type, 0, -1); |
1c379e20 DJ |
4151 | set_die_type (die, create_array_type (NULL, element_type, range_type), |
4152 | cu); | |
c906108c SS |
4153 | return; |
4154 | } | |
4155 | ||
4156 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 4157 | child_die = die->child; |
c906108c SS |
4158 | while (child_die && child_die->tag) |
4159 | { | |
4160 | if (child_die->tag == DW_TAG_subrange_type) | |
4161 | { | |
a02abb62 | 4162 | read_subrange_type (child_die, cu); |
c906108c | 4163 | |
a02abb62 JB |
4164 | if (child_die->type != NULL) |
4165 | { | |
4166 | /* The range type was succesfully read. Save it for | |
4167 | the array type creation. */ | |
4168 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
4169 | { | |
4170 | range_types = (struct type **) | |
4171 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
4172 | * sizeof (struct type *)); | |
4173 | if (ndim == 0) | |
4174 | make_cleanup (free_current_contents, &range_types); | |
4175 | } | |
4176 | range_types[ndim++] = child_die->type; | |
4177 | } | |
c906108c SS |
4178 | } |
4179 | child_die = sibling_die (child_die); | |
4180 | } | |
4181 | ||
4182 | /* Dwarf2 dimensions are output from left to right, create the | |
4183 | necessary array types in backwards order. */ | |
7ca2d3a3 | 4184 | |
c906108c | 4185 | type = element_type; |
7ca2d3a3 DL |
4186 | |
4187 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
4188 | { | |
4189 | int i = 0; | |
4190 | while (i < ndim) | |
4191 | type = create_array_type (NULL, type, range_types[i++]); | |
4192 | } | |
4193 | else | |
4194 | { | |
4195 | while (ndim-- > 0) | |
4196 | type = create_array_type (NULL, type, range_types[ndim]); | |
4197 | } | |
c906108c | 4198 | |
f5f8a009 EZ |
4199 | /* Understand Dwarf2 support for vector types (like they occur on |
4200 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
4201 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
4202 | custom vendor extension. The main difference between a regular | |
4203 | array and the vector variant is that vectors are passed by value | |
4204 | to functions. */ | |
e142c38c | 4205 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 EZ |
4206 | if (attr) |
4207 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
4208 | ||
c906108c SS |
4209 | do_cleanups (back_to); |
4210 | ||
4211 | /* Install the type in the die. */ | |
1c379e20 | 4212 | set_die_type (die, type, cu); |
c906108c SS |
4213 | } |
4214 | ||
7ca2d3a3 DL |
4215 | static enum dwarf_array_dim_ordering |
4216 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
4217 | { | |
4218 | struct attribute *attr; | |
4219 | ||
4220 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
4221 | ||
4222 | if (attr) return DW_SND (attr); | |
4223 | ||
4224 | /* | |
4225 | GNU F77 is a special case, as at 08/2004 array type info is the | |
4226 | opposite order to the dwarf2 specification, but data is still | |
4227 | laid out as per normal fortran. | |
4228 | ||
4229 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
4230 | version checking. | |
4231 | */ | |
4232 | ||
4233 | if (cu->language == language_fortran && | |
4234 | cu->producer && strstr (cu->producer, "GNU F77")) | |
4235 | { | |
4236 | return DW_ORD_row_major; | |
4237 | } | |
4238 | ||
4239 | switch (cu->language_defn->la_array_ordering) | |
4240 | { | |
4241 | case array_column_major: | |
4242 | return DW_ORD_col_major; | |
4243 | case array_row_major: | |
4244 | default: | |
4245 | return DW_ORD_row_major; | |
4246 | }; | |
4247 | } | |
4248 | ||
72019c9c GM |
4249 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
4250 | the DIE's type field. */ | |
4251 | ||
4252 | static void | |
4253 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) | |
4254 | { | |
4255 | if (die->type == NULL) | |
4256 | die->type = create_set_type ((struct type *) NULL, die_type (die, cu)); | |
4257 | } | |
7ca2d3a3 | 4258 | |
c906108c SS |
4259 | /* First cut: install each common block member as a global variable. */ |
4260 | ||
4261 | static void | |
e7c27a73 | 4262 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4263 | { |
4264 | struct die_info *child_die; | |
4265 | struct attribute *attr; | |
4266 | struct symbol *sym; | |
4267 | CORE_ADDR base = (CORE_ADDR) 0; | |
4268 | ||
e142c38c | 4269 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
4270 | if (attr) |
4271 | { | |
8e19ed76 PS |
4272 | /* Support the .debug_loc offsets */ |
4273 | if (attr_form_is_block (attr)) | |
4274 | { | |
e7c27a73 | 4275 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 PS |
4276 | } |
4277 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
4278 | { | |
4d3c2250 | 4279 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4280 | } |
4281 | else | |
4282 | { | |
4d3c2250 KB |
4283 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4284 | "common block member"); | |
8e19ed76 | 4285 | } |
c906108c | 4286 | } |
639d11d3 | 4287 | if (die->child != NULL) |
c906108c | 4288 | { |
639d11d3 | 4289 | child_die = die->child; |
c906108c SS |
4290 | while (child_die && child_die->tag) |
4291 | { | |
e7c27a73 | 4292 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 4293 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
4294 | if (attr) |
4295 | { | |
4296 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 4297 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
4298 | add_symbol_to_list (sym, &global_symbols); |
4299 | } | |
4300 | child_die = sibling_die (child_die); | |
4301 | } | |
4302 | } | |
4303 | } | |
4304 | ||
d9fa45fe DC |
4305 | /* Read a C++ namespace. */ |
4306 | ||
d9fa45fe | 4307 | static void |
e7c27a73 | 4308 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 4309 | { |
e7c27a73 | 4310 | struct objfile *objfile = cu->objfile; |
38d518c9 | 4311 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 4312 | const char *name; |
9219021c DC |
4313 | int is_anonymous; |
4314 | struct die_info *current_die; | |
987504bb | 4315 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
9219021c | 4316 | |
e142c38c | 4317 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
4318 | |
4319 | /* Now build the name of the current namespace. */ | |
4320 | ||
38d518c9 | 4321 | if (previous_prefix[0] == '\0') |
9219021c | 4322 | { |
38d518c9 | 4323 | processing_current_prefix = name; |
9219021c DC |
4324 | } |
4325 | else | |
4326 | { | |
987504bb JJ |
4327 | char *temp_name = typename_concat (NULL, previous_prefix, name, cu); |
4328 | make_cleanup (xfree, temp_name); | |
38d518c9 | 4329 | processing_current_prefix = temp_name; |
9219021c DC |
4330 | } |
4331 | ||
5c4e30ca DC |
4332 | /* Add a symbol associated to this if we haven't seen the namespace |
4333 | before. Also, add a using directive if it's an anonymous | |
4334 | namespace. */ | |
9219021c | 4335 | |
e142c38c | 4336 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
4337 | { |
4338 | struct type *type; | |
4339 | ||
4340 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
4341 | this cast will hopefully become unnecessary. */ | |
4342 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 4343 | (char *) processing_current_prefix, |
5c4e30ca DC |
4344 | objfile); |
4345 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
4346 | ||
e7c27a73 | 4347 | new_symbol (die, type, cu); |
1c379e20 | 4348 | set_die_type (die, type, cu); |
5c4e30ca DC |
4349 | |
4350 | if (is_anonymous) | |
38d518c9 EZ |
4351 | cp_add_using_directive (processing_current_prefix, |
4352 | strlen (previous_prefix), | |
4353 | strlen (processing_current_prefix)); | |
5c4e30ca | 4354 | } |
9219021c | 4355 | |
639d11d3 | 4356 | if (die->child != NULL) |
d9fa45fe | 4357 | { |
639d11d3 | 4358 | struct die_info *child_die = die->child; |
d9fa45fe DC |
4359 | |
4360 | while (child_die && child_die->tag) | |
4361 | { | |
e7c27a73 | 4362 | process_die (child_die, cu); |
d9fa45fe DC |
4363 | child_die = sibling_die (child_die); |
4364 | } | |
4365 | } | |
9219021c | 4366 | |
38d518c9 | 4367 | processing_current_prefix = previous_prefix; |
987504bb | 4368 | do_cleanups (back_to); |
38d518c9 EZ |
4369 | } |
4370 | ||
4371 | /* Return the name of the namespace represented by DIE. Set | |
4372 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
4373 | namespace. */ | |
4374 | ||
4375 | static const char * | |
e142c38c | 4376 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
4377 | { |
4378 | struct die_info *current_die; | |
4379 | const char *name = NULL; | |
4380 | ||
4381 | /* Loop through the extensions until we find a name. */ | |
4382 | ||
4383 | for (current_die = die; | |
4384 | current_die != NULL; | |
e142c38c | 4385 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 4386 | { |
e142c38c | 4387 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
4388 | if (name != NULL) |
4389 | break; | |
4390 | } | |
4391 | ||
4392 | /* Is it an anonymous namespace? */ | |
4393 | ||
4394 | *is_anonymous = (name == NULL); | |
4395 | if (*is_anonymous) | |
4396 | name = "(anonymous namespace)"; | |
4397 | ||
4398 | return name; | |
d9fa45fe DC |
4399 | } |
4400 | ||
c906108c SS |
4401 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
4402 | the user defined type vector. */ | |
4403 | ||
4404 | static void | |
e7c27a73 | 4405 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4406 | { |
e7c27a73 | 4407 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 4408 | struct type *type; |
8b2dbe47 KB |
4409 | struct attribute *attr_byte_size; |
4410 | struct attribute *attr_address_class; | |
4411 | int byte_size, addr_class; | |
c906108c SS |
4412 | |
4413 | if (die->type) | |
4414 | { | |
4415 | return; | |
4416 | } | |
4417 | ||
e7c27a73 | 4418 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 4419 | |
e142c38c | 4420 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
4421 | if (attr_byte_size) |
4422 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 4423 | else |
8b2dbe47 KB |
4424 | byte_size = cu_header->addr_size; |
4425 | ||
e142c38c | 4426 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
4427 | if (attr_address_class) |
4428 | addr_class = DW_UNSND (attr_address_class); | |
4429 | else | |
4430 | addr_class = DW_ADDR_none; | |
4431 | ||
4432 | /* If the pointer size or address class is different than the | |
4433 | default, create a type variant marked as such and set the | |
4434 | length accordingly. */ | |
4435 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 4436 | { |
8b2dbe47 KB |
4437 | if (ADDRESS_CLASS_TYPE_FLAGS_P ()) |
4438 | { | |
4439 | int type_flags; | |
4440 | ||
4441 | type_flags = ADDRESS_CLASS_TYPE_FLAGS (byte_size, addr_class); | |
4442 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); | |
4443 | type = make_type_with_address_space (type, type_flags); | |
4444 | } | |
4445 | else if (TYPE_LENGTH (type) != byte_size) | |
4446 | { | |
e2e0b3e5 | 4447 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 KB |
4448 | } |
4449 | else { | |
4450 | /* Should we also complain about unhandled address classes? */ | |
4451 | } | |
c906108c | 4452 | } |
8b2dbe47 KB |
4453 | |
4454 | TYPE_LENGTH (type) = byte_size; | |
1c379e20 | 4455 | set_die_type (die, type, cu); |
c906108c SS |
4456 | } |
4457 | ||
4458 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
4459 | the user defined type vector. */ | |
4460 | ||
4461 | static void | |
e7c27a73 | 4462 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4463 | { |
e7c27a73 | 4464 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4465 | struct type *type; |
4466 | struct type *to_type; | |
4467 | struct type *domain; | |
4468 | ||
4469 | if (die->type) | |
4470 | { | |
4471 | return; | |
4472 | } | |
4473 | ||
4474 | type = alloc_type (objfile); | |
e7c27a73 DJ |
4475 | to_type = die_type (die, cu); |
4476 | domain = die_containing_type (die, cu); | |
c906108c SS |
4477 | smash_to_member_type (type, domain, to_type); |
4478 | ||
1c379e20 | 4479 | set_die_type (die, type, cu); |
c906108c SS |
4480 | } |
4481 | ||
4482 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
4483 | the user defined type vector. */ | |
4484 | ||
4485 | static void | |
e7c27a73 | 4486 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4487 | { |
e7c27a73 | 4488 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4489 | struct type *type; |
4490 | struct attribute *attr; | |
4491 | ||
4492 | if (die->type) | |
4493 | { | |
4494 | return; | |
4495 | } | |
4496 | ||
e7c27a73 | 4497 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 4498 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4499 | if (attr) |
4500 | { | |
4501 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4502 | } | |
4503 | else | |
4504 | { | |
107d2387 | 4505 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 4506 | } |
1c379e20 | 4507 | set_die_type (die, type, cu); |
c906108c SS |
4508 | } |
4509 | ||
4510 | static void | |
e7c27a73 | 4511 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4512 | { |
090c42a4 JB |
4513 | struct type *base_type; |
4514 | ||
c906108c SS |
4515 | if (die->type) |
4516 | { | |
4517 | return; | |
4518 | } | |
4519 | ||
e7c27a73 | 4520 | base_type = die_type (die, cu); |
1c379e20 DJ |
4521 | set_die_type (die, make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0), |
4522 | cu); | |
c906108c SS |
4523 | } |
4524 | ||
4525 | static void | |
e7c27a73 | 4526 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4527 | { |
090c42a4 JB |
4528 | struct type *base_type; |
4529 | ||
c906108c SS |
4530 | if (die->type) |
4531 | { | |
4532 | return; | |
4533 | } | |
4534 | ||
e7c27a73 | 4535 | base_type = die_type (die, cu); |
1c379e20 DJ |
4536 | set_die_type (die, make_cv_type (TYPE_CONST (base_type), 1, base_type, 0), |
4537 | cu); | |
c906108c SS |
4538 | } |
4539 | ||
4540 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
4541 | the user defined type vector. It isn't really a user defined type, | |
4542 | but it behaves like one, with other DIE's using an AT_user_def_type | |
4543 | attribute to reference it. */ | |
4544 | ||
4545 | static void | |
e7c27a73 | 4546 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4547 | { |
e7c27a73 | 4548 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4549 | struct type *type, *range_type, *index_type, *char_type; |
4550 | struct attribute *attr; | |
4551 | unsigned int length; | |
4552 | ||
4553 | if (die->type) | |
4554 | { | |
4555 | return; | |
4556 | } | |
4557 | ||
e142c38c | 4558 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
4559 | if (attr) |
4560 | { | |
4561 | length = DW_UNSND (attr); | |
4562 | } | |
4563 | else | |
4564 | { | |
b21b22e0 | 4565 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 4566 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
4567 | if (attr) |
4568 | { | |
4569 | length = DW_UNSND (attr); | |
4570 | } | |
4571 | else | |
4572 | { | |
4573 | length = 1; | |
4574 | } | |
c906108c | 4575 | } |
e142c38c | 4576 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 4577 | range_type = create_range_type (NULL, index_type, 1, length); |
e142c38c | 4578 | if (cu->language == language_fortran) |
b21b22e0 PS |
4579 | { |
4580 | /* Need to create a unique string type for bounds | |
4581 | information */ | |
4582 | type = create_string_type (0, range_type); | |
4583 | } | |
4584 | else | |
4585 | { | |
e142c38c | 4586 | char_type = dwarf2_fundamental_type (objfile, FT_CHAR, cu); |
b21b22e0 PS |
4587 | type = create_string_type (char_type, range_type); |
4588 | } | |
1c379e20 | 4589 | set_die_type (die, type, cu); |
c906108c SS |
4590 | } |
4591 | ||
4592 | /* Handle DIES due to C code like: | |
4593 | ||
4594 | struct foo | |
c5aa993b JM |
4595 | { |
4596 | int (*funcp)(int a, long l); | |
4597 | int b; | |
4598 | }; | |
c906108c SS |
4599 | |
4600 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 4601 | */ |
c906108c SS |
4602 | |
4603 | static void | |
e7c27a73 | 4604 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4605 | { |
4606 | struct type *type; /* Type that this function returns */ | |
4607 | struct type *ftype; /* Function that returns above type */ | |
4608 | struct attribute *attr; | |
4609 | ||
4610 | /* Decode the type that this subroutine returns */ | |
4611 | if (die->type) | |
4612 | { | |
4613 | return; | |
4614 | } | |
e7c27a73 | 4615 | type = die_type (die, cu); |
1326e61b | 4616 | ftype = make_function_type (type, (struct type **) 0); |
c906108c | 4617 | |
987504bb | 4618 | /* All functions in C++ and Java have prototypes. */ |
e142c38c | 4619 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 4620 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb JJ |
4621 | || cu->language == language_cplus |
4622 | || cu->language == language_java) | |
c906108c SS |
4623 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
4624 | ||
639d11d3 | 4625 | if (die->child != NULL) |
c906108c SS |
4626 | { |
4627 | struct die_info *child_die; | |
4628 | int nparams = 0; | |
4629 | int iparams = 0; | |
4630 | ||
4631 | /* Count the number of parameters. | |
4632 | FIXME: GDB currently ignores vararg functions, but knows about | |
4633 | vararg member functions. */ | |
639d11d3 | 4634 | child_die = die->child; |
c906108c SS |
4635 | while (child_die && child_die->tag) |
4636 | { | |
4637 | if (child_die->tag == DW_TAG_formal_parameter) | |
4638 | nparams++; | |
4639 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
4640 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
4641 | child_die = sibling_die (child_die); | |
4642 | } | |
4643 | ||
4644 | /* Allocate storage for parameters and fill them in. */ | |
4645 | TYPE_NFIELDS (ftype) = nparams; | |
4646 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 4647 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 4648 | |
639d11d3 | 4649 | child_die = die->child; |
c906108c SS |
4650 | while (child_die && child_die->tag) |
4651 | { | |
4652 | if (child_die->tag == DW_TAG_formal_parameter) | |
4653 | { | |
4654 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
4655 | member functions. G++ helps GDB by marking the first |
4656 | parameter for non-static member functions (which is the | |
4657 | this pointer) as artificial. We pass this information | |
4658 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 4659 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
4660 | if (attr) |
4661 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
4662 | else | |
4663 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 4664 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
4665 | iparams++; |
4666 | } | |
4667 | child_die = sibling_die (child_die); | |
4668 | } | |
4669 | } | |
4670 | ||
1c379e20 | 4671 | set_die_type (die, ftype, cu); |
c906108c SS |
4672 | } |
4673 | ||
4674 | static void | |
e7c27a73 | 4675 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4676 | { |
e7c27a73 | 4677 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
4678 | struct attribute *attr; |
4679 | char *name = NULL; | |
c906108c SS |
4680 | |
4681 | if (!die->type) | |
4682 | { | |
e142c38c | 4683 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c | 4684 | if (attr && DW_STRING (attr)) |
2f038fcb FF |
4685 | { |
4686 | name = DW_STRING (attr); | |
4687 | } | |
1c379e20 DJ |
4688 | set_die_type (die, init_type (TYPE_CODE_TYPEDEF, 0, |
4689 | TYPE_FLAG_TARGET_STUB, name, objfile), | |
4690 | cu); | |
e7c27a73 | 4691 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
4692 | } |
4693 | } | |
4694 | ||
4695 | /* Find a representation of a given base type and install | |
4696 | it in the TYPE field of the die. */ | |
4697 | ||
4698 | static void | |
e7c27a73 | 4699 | read_base_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 attribute *attr; | |
4704 | int encoding = 0, size = 0; | |
4705 | ||
4706 | /* If we've already decoded this die, this is a no-op. */ | |
4707 | if (die->type) | |
4708 | { | |
4709 | return; | |
4710 | } | |
4711 | ||
e142c38c | 4712 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
4713 | if (attr) |
4714 | { | |
4715 | encoding = DW_UNSND (attr); | |
4716 | } | |
e142c38c | 4717 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4718 | if (attr) |
4719 | { | |
4720 | size = DW_UNSND (attr); | |
4721 | } | |
e142c38c | 4722 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
4723 | if (attr && DW_STRING (attr)) |
4724 | { | |
4725 | enum type_code code = TYPE_CODE_INT; | |
f5ef7c67 | 4726 | int type_flags = 0; |
c906108c SS |
4727 | |
4728 | switch (encoding) | |
4729 | { | |
4730 | case DW_ATE_address: | |
4731 | /* Turn DW_ATE_address into a void * pointer. */ | |
4732 | code = TYPE_CODE_PTR; | |
f5ef7c67 | 4733 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4734 | break; |
4735 | case DW_ATE_boolean: | |
4736 | code = TYPE_CODE_BOOL; | |
f5ef7c67 | 4737 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4738 | break; |
4739 | case DW_ATE_complex_float: | |
4740 | code = TYPE_CODE_COMPLEX; | |
4741 | break; | |
4742 | case DW_ATE_float: | |
4743 | code = TYPE_CODE_FLT; | |
4744 | break; | |
4745 | case DW_ATE_signed: | |
c906108c SS |
4746 | break; |
4747 | case DW_ATE_unsigned: | |
72019c9c GM |
4748 | type_flags |= TYPE_FLAG_UNSIGNED; |
4749 | break; | |
4750 | case DW_ATE_signed_char: | |
4751 | if (cu->language == language_m2) | |
4752 | code = TYPE_CODE_CHAR; | |
4753 | break; | |
4754 | case DW_ATE_unsigned_char: | |
4755 | if (cu->language == language_m2) | |
4756 | code = TYPE_CODE_CHAR; | |
f5ef7c67 | 4757 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4758 | break; |
4759 | default: | |
e2e0b3e5 | 4760 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), |
4d3c2250 | 4761 | dwarf_type_encoding_name (encoding)); |
c906108c SS |
4762 | break; |
4763 | } | |
f5ef7c67 | 4764 | type = init_type (code, size, type_flags, DW_STRING (attr), objfile); |
c906108c | 4765 | if (encoding == DW_ATE_address) |
e142c38c DJ |
4766 | TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID, |
4767 | cu); | |
f65ca430 DJ |
4768 | else if (encoding == DW_ATE_complex_float) |
4769 | { | |
4770 | if (size == 32) | |
4771 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4772 | = dwarf2_fundamental_type (objfile, FT_EXT_PREC_FLOAT, cu); |
f65ca430 DJ |
4773 | else if (size == 16) |
4774 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4775 | = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
f65ca430 DJ |
4776 | else if (size == 8) |
4777 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4778 | = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
f65ca430 | 4779 | } |
c906108c SS |
4780 | } |
4781 | else | |
4782 | { | |
e7c27a73 | 4783 | type = dwarf_base_type (encoding, size, cu); |
c906108c | 4784 | } |
1c379e20 | 4785 | set_die_type (die, type, cu); |
c906108c SS |
4786 | } |
4787 | ||
a02abb62 JB |
4788 | /* Read the given DW_AT_subrange DIE. */ |
4789 | ||
4790 | static void | |
4791 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
4792 | { | |
4793 | struct type *base_type; | |
4794 | struct type *range_type; | |
4795 | struct attribute *attr; | |
4796 | int low = 0; | |
4797 | int high = -1; | |
4798 | ||
4799 | /* If we have already decoded this die, then nothing more to do. */ | |
4800 | if (die->type) | |
4801 | return; | |
4802 | ||
4803 | base_type = die_type (die, cu); | |
4804 | if (base_type == NULL) | |
4805 | { | |
4806 | complaint (&symfile_complaints, | |
e2e0b3e5 | 4807 | _("DW_AT_type missing from DW_TAG_subrange_type")); |
a02abb62 JB |
4808 | return; |
4809 | } | |
4810 | ||
4811 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
4812 | base_type = alloc_type (NULL); | |
4813 | ||
e142c38c | 4814 | if (cu->language == language_fortran) |
a02abb62 JB |
4815 | { |
4816 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
4817 | low = 1; | |
4818 | } | |
4819 | ||
dd5e6932 DJ |
4820 | /* FIXME: For variable sized arrays either of these could be |
4821 | a variable rather than a constant value. We'll allow it, | |
4822 | but we don't know how to handle it. */ | |
e142c38c | 4823 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
4824 | if (attr) |
4825 | low = dwarf2_get_attr_constant_value (attr, 0); | |
4826 | ||
e142c38c | 4827 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
4828 | if (attr) |
4829 | { | |
4830 | if (attr->form == DW_FORM_block1) | |
4831 | { | |
4832 | /* GCC encodes arrays with unspecified or dynamic length | |
4833 | with a DW_FORM_block1 attribute. | |
4834 | FIXME: GDB does not yet know how to handle dynamic | |
4835 | arrays properly, treat them as arrays with unspecified | |
4836 | length for now. | |
4837 | ||
4838 | FIXME: jimb/2003-09-22: GDB does not really know | |
4839 | how to handle arrays of unspecified length | |
4840 | either; we just represent them as zero-length | |
4841 | arrays. Choose an appropriate upper bound given | |
4842 | the lower bound we've computed above. */ | |
4843 | high = low - 1; | |
4844 | } | |
4845 | else | |
4846 | high = dwarf2_get_attr_constant_value (attr, 1); | |
4847 | } | |
4848 | ||
4849 | range_type = create_range_type (NULL, base_type, low, high); | |
4850 | ||
e142c38c | 4851 | attr = dwarf2_attr (die, DW_AT_name, cu); |
a02abb62 JB |
4852 | if (attr && DW_STRING (attr)) |
4853 | TYPE_NAME (range_type) = DW_STRING (attr); | |
4854 | ||
e142c38c | 4855 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
4856 | if (attr) |
4857 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
4858 | ||
1c379e20 | 4859 | set_die_type (die, range_type, cu); |
a02abb62 JB |
4860 | } |
4861 | ||
81a17f79 JB |
4862 | static void |
4863 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) | |
4864 | { | |
4865 | struct type *type; | |
4866 | struct attribute *attr; | |
4867 | ||
4868 | if (die->type) | |
4869 | return; | |
4870 | ||
4871 | /* For now, we only support the C meaning of an unspecified type: void. */ | |
4872 | ||
4873 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
4874 | type = init_type (TYPE_CODE_VOID, 0, 0, attr ? DW_STRING (attr) : "", | |
4875 | cu->objfile); | |
4876 | ||
4877 | set_die_type (die, type, cu); | |
4878 | } | |
a02abb62 | 4879 | |
c906108c SS |
4880 | /* Read a whole compilation unit into a linked list of dies. */ |
4881 | ||
f9aca02d | 4882 | static struct die_info * |
fe1b8b76 | 4883 | read_comp_unit (gdb_byte *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4884 | { |
e7c27a73 | 4885 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
4886 | } |
4887 | ||
4888 | /* Read a single die and all its descendents. Set the die's sibling | |
4889 | field to NULL; set other fields in the die correctly, and set all | |
4890 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
4891 | location of the info_ptr after reading all of those dies. PARENT | |
4892 | is the parent of the die in question. */ | |
4893 | ||
4894 | static struct die_info * | |
fe1b8b76 | 4895 | read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 4896 | struct dwarf2_cu *cu, |
fe1b8b76 | 4897 | gdb_byte **new_info_ptr, |
639d11d3 DC |
4898 | struct die_info *parent) |
4899 | { | |
4900 | struct die_info *die; | |
fe1b8b76 | 4901 | gdb_byte *cur_ptr; |
639d11d3 DC |
4902 | int has_children; |
4903 | ||
e7c27a73 | 4904 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
10b3939b | 4905 | store_in_ref_table (die->offset, die, cu); |
639d11d3 DC |
4906 | |
4907 | if (has_children) | |
4908 | { | |
e7c27a73 | 4909 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
4910 | new_info_ptr, die); |
4911 | } | |
4912 | else | |
4913 | { | |
4914 | die->child = NULL; | |
4915 | *new_info_ptr = cur_ptr; | |
4916 | } | |
4917 | ||
4918 | die->sibling = NULL; | |
4919 | die->parent = parent; | |
4920 | return die; | |
4921 | } | |
4922 | ||
4923 | /* Read a die, all of its descendents, and all of its siblings; set | |
4924 | all of the fields of all of the dies correctly. Arguments are as | |
4925 | in read_die_and_children. */ | |
4926 | ||
4927 | static struct die_info * | |
fe1b8b76 | 4928 | read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 4929 | struct dwarf2_cu *cu, |
fe1b8b76 | 4930 | gdb_byte **new_info_ptr, |
639d11d3 DC |
4931 | struct die_info *parent) |
4932 | { | |
4933 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 4934 | gdb_byte *cur_ptr; |
639d11d3 | 4935 | |
c906108c | 4936 | cur_ptr = info_ptr; |
639d11d3 DC |
4937 | first_die = last_sibling = NULL; |
4938 | ||
4939 | while (1) | |
c906108c | 4940 | { |
639d11d3 | 4941 | struct die_info *die |
e7c27a73 | 4942 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
4943 | |
4944 | if (!first_die) | |
c906108c | 4945 | { |
639d11d3 | 4946 | first_die = die; |
c906108c | 4947 | } |
639d11d3 | 4948 | else |
c906108c | 4949 | { |
639d11d3 | 4950 | last_sibling->sibling = die; |
c906108c SS |
4951 | } |
4952 | ||
639d11d3 | 4953 | if (die->tag == 0) |
c906108c | 4954 | { |
639d11d3 DC |
4955 | *new_info_ptr = cur_ptr; |
4956 | return first_die; | |
c906108c SS |
4957 | } |
4958 | else | |
4959 | { | |
639d11d3 | 4960 | last_sibling = die; |
c906108c SS |
4961 | } |
4962 | } | |
c906108c SS |
4963 | } |
4964 | ||
4965 | /* Free a linked list of dies. */ | |
4966 | ||
4967 | static void | |
fba45db2 | 4968 | free_die_list (struct die_info *dies) |
c906108c SS |
4969 | { |
4970 | struct die_info *die, *next; | |
4971 | ||
4972 | die = dies; | |
4973 | while (die) | |
4974 | { | |
639d11d3 DC |
4975 | if (die->child != NULL) |
4976 | free_die_list (die->child); | |
4977 | next = die->sibling; | |
b8c9b27d KB |
4978 | xfree (die->attrs); |
4979 | xfree (die); | |
c906108c SS |
4980 | die = next; |
4981 | } | |
4982 | } | |
4983 | ||
4984 | /* Read the contents of the section at OFFSET and of size SIZE from the | |
8b92e4d5 | 4985 | object file specified by OBJFILE into the objfile_obstack and return it. */ |
c906108c | 4986 | |
fe1b8b76 | 4987 | gdb_byte * |
188dd5d6 | 4988 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
4989 | { |
4990 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 4991 | gdb_byte *buf, *retbuf; |
2c500098 | 4992 | bfd_size_type size = bfd_get_section_size (sectp); |
c906108c SS |
4993 | |
4994 | if (size == 0) | |
4995 | return NULL; | |
4996 | ||
fe1b8b76 JB |
4997 | buf = obstack_alloc (&objfile->objfile_obstack, size); |
4998 | retbuf = symfile_relocate_debug_section (abfd, sectp, buf); | |
086df311 DJ |
4999 | if (retbuf != NULL) |
5000 | return retbuf; | |
5001 | ||
188dd5d6 DJ |
5002 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
5003 | || bfd_bread (buf, size, abfd) != size) | |
8a3fe4f8 | 5004 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
188dd5d6 DJ |
5005 | bfd_get_filename (abfd)); |
5006 | ||
c906108c SS |
5007 | return buf; |
5008 | } | |
5009 | ||
5010 | /* In DWARF version 2, the description of the debugging information is | |
5011 | stored in a separate .debug_abbrev section. Before we read any | |
5012 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
5013 | in a hash table. This function also sets flags in CU describing |
5014 | the data found in the abbrev table. */ | |
c906108c SS |
5015 | |
5016 | static void | |
e7c27a73 | 5017 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5018 | { |
e7c27a73 | 5019 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 5020 | gdb_byte *abbrev_ptr; |
c906108c SS |
5021 | struct abbrev_info *cur_abbrev; |
5022 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
5023 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
5024 | struct attr_abbrev *cur_attrs; |
5025 | unsigned int allocated_attrs; | |
c906108c | 5026 | |
57349743 | 5027 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
5028 | obstack_init (&cu->abbrev_obstack); |
5029 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
5030 | (ABBREV_HASH_SIZE | |
5031 | * sizeof (struct abbrev_info *))); | |
5032 | memset (cu->dwarf2_abbrevs, 0, | |
5033 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 5034 | |
6502dd73 | 5035 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
5036 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5037 | abbrev_ptr += bytes_read; | |
5038 | ||
f3dd6933 DJ |
5039 | allocated_attrs = ATTR_ALLOC_CHUNK; |
5040 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
5041 | ||
c906108c SS |
5042 | /* loop until we reach an abbrev number of 0 */ |
5043 | while (abbrev_number) | |
5044 | { | |
f3dd6933 | 5045 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
5046 | |
5047 | /* read in abbrev header */ | |
5048 | cur_abbrev->number = abbrev_number; | |
5049 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5050 | abbrev_ptr += bytes_read; | |
5051 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
5052 | abbrev_ptr += 1; | |
5053 | ||
72bf9492 DJ |
5054 | if (cur_abbrev->tag == DW_TAG_namespace) |
5055 | cu->has_namespace_info = 1; | |
5056 | ||
c906108c SS |
5057 | /* now read in declarations */ |
5058 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5059 | abbrev_ptr += bytes_read; | |
5060 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5061 | abbrev_ptr += bytes_read; | |
5062 | while (abbrev_name) | |
5063 | { | |
f3dd6933 | 5064 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 5065 | { |
f3dd6933 DJ |
5066 | allocated_attrs += ATTR_ALLOC_CHUNK; |
5067 | cur_attrs | |
5068 | = xrealloc (cur_attrs, (allocated_attrs | |
5069 | * sizeof (struct attr_abbrev))); | |
c906108c | 5070 | } |
ae038cb0 DJ |
5071 | |
5072 | /* Record whether this compilation unit might have | |
5073 | inter-compilation-unit references. If we don't know what form | |
5074 | this attribute will have, then it might potentially be a | |
5075 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
5076 | references. */ | |
5077 | ||
5078 | if (abbrev_form == DW_FORM_ref_addr | |
5079 | || abbrev_form == DW_FORM_indirect) | |
5080 | cu->has_form_ref_addr = 1; | |
5081 | ||
f3dd6933 DJ |
5082 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
5083 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
5084 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5085 | abbrev_ptr += bytes_read; | |
5086 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5087 | abbrev_ptr += bytes_read; | |
5088 | } | |
5089 | ||
f3dd6933 DJ |
5090 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
5091 | (cur_abbrev->num_attrs | |
5092 | * sizeof (struct attr_abbrev))); | |
5093 | memcpy (cur_abbrev->attrs, cur_attrs, | |
5094 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
5095 | ||
c906108c | 5096 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
5097 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
5098 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
5099 | |
5100 | /* Get next abbreviation. | |
5101 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
5102 | always properly terminated with an abbrev number of 0. |
5103 | Exit loop if we encounter an abbreviation which we have | |
5104 | already read (which means we are about to read the abbreviations | |
5105 | for the next compile unit) or if the end of the abbreviation | |
5106 | table is reached. */ | |
6502dd73 DJ |
5107 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev_buffer) |
5108 | >= dwarf2_per_objfile->abbrev_size) | |
c906108c SS |
5109 | break; |
5110 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5111 | abbrev_ptr += bytes_read; | |
e7c27a73 | 5112 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
5113 | break; |
5114 | } | |
f3dd6933 DJ |
5115 | |
5116 | xfree (cur_attrs); | |
c906108c SS |
5117 | } |
5118 | ||
f3dd6933 | 5119 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 5120 | |
c906108c | 5121 | static void |
f3dd6933 | 5122 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 5123 | { |
f3dd6933 | 5124 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 5125 | |
f3dd6933 DJ |
5126 | obstack_free (&cu->abbrev_obstack, NULL); |
5127 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
5128 | } |
5129 | ||
5130 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
5131 | ||
5132 | static struct abbrev_info * | |
e7c27a73 | 5133 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
5134 | { |
5135 | unsigned int hash_number; | |
5136 | struct abbrev_info *abbrev; | |
5137 | ||
5138 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 5139 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
5140 | |
5141 | while (abbrev) | |
5142 | { | |
5143 | if (abbrev->number == number) | |
5144 | return abbrev; | |
5145 | else | |
5146 | abbrev = abbrev->next; | |
5147 | } | |
5148 | return NULL; | |
5149 | } | |
5150 | ||
72bf9492 DJ |
5151 | /* Returns nonzero if TAG represents a type that we might generate a partial |
5152 | symbol for. */ | |
5153 | ||
5154 | static int | |
5155 | is_type_tag_for_partial (int tag) | |
5156 | { | |
5157 | switch (tag) | |
5158 | { | |
5159 | #if 0 | |
5160 | /* Some types that would be reasonable to generate partial symbols for, | |
5161 | that we don't at present. */ | |
5162 | case DW_TAG_array_type: | |
5163 | case DW_TAG_file_type: | |
5164 | case DW_TAG_ptr_to_member_type: | |
5165 | case DW_TAG_set_type: | |
5166 | case DW_TAG_string_type: | |
5167 | case DW_TAG_subroutine_type: | |
5168 | #endif | |
5169 | case DW_TAG_base_type: | |
5170 | case DW_TAG_class_type: | |
5171 | case DW_TAG_enumeration_type: | |
5172 | case DW_TAG_structure_type: | |
5173 | case DW_TAG_subrange_type: | |
5174 | case DW_TAG_typedef: | |
5175 | case DW_TAG_union_type: | |
5176 | return 1; | |
5177 | default: | |
5178 | return 0; | |
5179 | } | |
5180 | } | |
5181 | ||
5182 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
5183 | ||
5184 | static struct partial_die_info * | |
fe1b8b76 | 5185 | load_partial_dies (bfd *abfd, gdb_byte *info_ptr, int building_psymtab, |
72bf9492 DJ |
5186 | struct dwarf2_cu *cu) |
5187 | { | |
5188 | struct partial_die_info *part_die; | |
5189 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
5190 | struct abbrev_info *abbrev; | |
5191 | unsigned int bytes_read; | |
5afb4e99 | 5192 | unsigned int load_all = 0; |
72bf9492 DJ |
5193 | |
5194 | int nesting_level = 1; | |
5195 | ||
5196 | parent_die = NULL; | |
5197 | last_die = NULL; | |
5198 | ||
5afb4e99 DJ |
5199 | if (cu->per_cu && cu->per_cu->load_all_dies) |
5200 | load_all = 1; | |
5201 | ||
72bf9492 DJ |
5202 | cu->partial_dies |
5203 | = htab_create_alloc_ex (cu->header.length / 12, | |
5204 | partial_die_hash, | |
5205 | partial_die_eq, | |
5206 | NULL, | |
5207 | &cu->comp_unit_obstack, | |
5208 | hashtab_obstack_allocate, | |
5209 | dummy_obstack_deallocate); | |
5210 | ||
5211 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5212 | sizeof (struct partial_die_info)); | |
5213 | ||
5214 | while (1) | |
5215 | { | |
5216 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5217 | ||
5218 | /* A NULL abbrev means the end of a series of children. */ | |
5219 | if (abbrev == NULL) | |
5220 | { | |
5221 | if (--nesting_level == 0) | |
5222 | { | |
5223 | /* PART_DIE was probably the last thing allocated on the | |
5224 | comp_unit_obstack, so we could call obstack_free | |
5225 | here. We don't do that because the waste is small, | |
5226 | and will be cleaned up when we're done with this | |
5227 | compilation unit. This way, we're also more robust | |
5228 | against other users of the comp_unit_obstack. */ | |
5229 | return first_die; | |
5230 | } | |
5231 | info_ptr += bytes_read; | |
5232 | last_die = parent_die; | |
5233 | parent_die = parent_die->die_parent; | |
5234 | continue; | |
5235 | } | |
5236 | ||
5afb4e99 DJ |
5237 | /* Check whether this DIE is interesting enough to save. Normally |
5238 | we would not be interested in members here, but there may be | |
5239 | later variables referencing them via DW_AT_specification (for | |
5240 | static members). */ | |
5241 | if (!load_all | |
5242 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
5243 | && abbrev->tag != DW_TAG_enumerator |
5244 | && abbrev->tag != DW_TAG_subprogram | |
5245 | && abbrev->tag != DW_TAG_variable | |
5afb4e99 DJ |
5246 | && abbrev->tag != DW_TAG_namespace |
5247 | && abbrev->tag != DW_TAG_member) | |
72bf9492 DJ |
5248 | { |
5249 | /* Otherwise we skip to the next sibling, if any. */ | |
5250 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
5251 | continue; | |
5252 | } | |
5253 | ||
5254 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, | |
5255 | abfd, info_ptr, cu); | |
5256 | ||
5257 | /* This two-pass algorithm for processing partial symbols has a | |
5258 | high cost in cache pressure. Thus, handle some simple cases | |
5259 | here which cover the majority of C partial symbols. DIEs | |
5260 | which neither have specification tags in them, nor could have | |
5261 | specification tags elsewhere pointing at them, can simply be | |
5262 | processed and discarded. | |
5263 | ||
5264 | This segment is also optional; scan_partial_symbols and | |
5265 | add_partial_symbol will handle these DIEs if we chain | |
5266 | them in normally. When compilers which do not emit large | |
5267 | quantities of duplicate debug information are more common, | |
5268 | this code can probably be removed. */ | |
5269 | ||
5270 | /* Any complete simple types at the top level (pretty much all | |
5271 | of them, for a language without namespaces), can be processed | |
5272 | directly. */ | |
5273 | if (parent_die == NULL | |
5274 | && part_die->has_specification == 0 | |
5275 | && part_die->is_declaration == 0 | |
5276 | && (part_die->tag == DW_TAG_typedef | |
5277 | || part_die->tag == DW_TAG_base_type | |
5278 | || part_die->tag == DW_TAG_subrange_type)) | |
5279 | { | |
5280 | if (building_psymtab && part_die->name != NULL) | |
5281 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5282 | VAR_DOMAIN, LOC_TYPEDEF, | |
5283 | &cu->objfile->static_psymbols, | |
5284 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5285 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5286 | continue; | |
5287 | } | |
5288 | ||
5289 | /* If we're at the second level, and we're an enumerator, and | |
5290 | our parent has no specification (meaning possibly lives in a | |
5291 | namespace elsewhere), then we can add the partial symbol now | |
5292 | instead of queueing it. */ | |
5293 | if (part_die->tag == DW_TAG_enumerator | |
5294 | && parent_die != NULL | |
5295 | && parent_die->die_parent == NULL | |
5296 | && parent_die->tag == DW_TAG_enumeration_type | |
5297 | && parent_die->has_specification == 0) | |
5298 | { | |
5299 | if (part_die->name == NULL) | |
e2e0b3e5 | 5300 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 DJ |
5301 | else if (building_psymtab) |
5302 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5303 | VAR_DOMAIN, LOC_CONST, | |
987504bb JJ |
5304 | (cu->language == language_cplus |
5305 | || cu->language == language_java) | |
72bf9492 DJ |
5306 | ? &cu->objfile->global_psymbols |
5307 | : &cu->objfile->static_psymbols, | |
5308 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5309 | ||
5310 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5311 | continue; | |
5312 | } | |
5313 | ||
5314 | /* We'll save this DIE so link it in. */ | |
5315 | part_die->die_parent = parent_die; | |
5316 | part_die->die_sibling = NULL; | |
5317 | part_die->die_child = NULL; | |
5318 | ||
5319 | if (last_die && last_die == parent_die) | |
5320 | last_die->die_child = part_die; | |
5321 | else if (last_die) | |
5322 | last_die->die_sibling = part_die; | |
5323 | ||
5324 | last_die = part_die; | |
5325 | ||
5326 | if (first_die == NULL) | |
5327 | first_die = part_die; | |
5328 | ||
5329 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
5330 | find interesting need to be in the hash table, because we | |
5331 | also have the parent/sibling/child chains; only those that we | |
5332 | might refer to by offset later during partial symbol reading. | |
5333 | ||
5334 | For now this means things that might have be the target of a | |
5335 | DW_AT_specification, DW_AT_abstract_origin, or | |
5336 | DW_AT_extension. DW_AT_extension will refer only to | |
5337 | namespaces; DW_AT_abstract_origin refers to functions (and | |
5338 | many things under the function DIE, but we do not recurse | |
5339 | into function DIEs during partial symbol reading) and | |
5340 | possibly variables as well; DW_AT_specification refers to | |
5341 | declarations. Declarations ought to have the DW_AT_declaration | |
5342 | flag. It happens that GCC forgets to put it in sometimes, but | |
5343 | only for functions, not for types. | |
5344 | ||
5345 | Adding more things than necessary to the hash table is harmless | |
5346 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
5347 | wasted time in find_partial_die, when we reread the compilation |
5348 | unit with load_all_dies set. */ | |
72bf9492 | 5349 | |
5afb4e99 DJ |
5350 | if (load_all |
5351 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
5352 | || abbrev->tag == DW_TAG_variable |
5353 | || abbrev->tag == DW_TAG_namespace | |
5354 | || part_die->is_declaration) | |
5355 | { | |
5356 | void **slot; | |
5357 | ||
5358 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
5359 | part_die->offset, INSERT); | |
5360 | *slot = part_die; | |
5361 | } | |
5362 | ||
5363 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5364 | sizeof (struct partial_die_info)); | |
5365 | ||
5366 | /* For some DIEs we want to follow their children (if any). For C | |
5367 | we have no reason to follow the children of structures; for other | |
5368 | languages we have to, both so that we can get at method physnames | |
5369 | to infer fully qualified class names, and for DW_AT_specification. */ | |
5370 | if (last_die->has_children | |
5afb4e99 DJ |
5371 | && (load_all |
5372 | || last_die->tag == DW_TAG_namespace | |
72bf9492 DJ |
5373 | || last_die->tag == DW_TAG_enumeration_type |
5374 | || (cu->language != language_c | |
5375 | && (last_die->tag == DW_TAG_class_type | |
5376 | || last_die->tag == DW_TAG_structure_type | |
5377 | || last_die->tag == DW_TAG_union_type)))) | |
5378 | { | |
5379 | nesting_level++; | |
5380 | parent_die = last_die; | |
5381 | continue; | |
5382 | } | |
5383 | ||
5384 | /* Otherwise we skip to the next sibling, if any. */ | |
5385 | info_ptr = locate_pdi_sibling (last_die, info_ptr, abfd, cu); | |
5386 | ||
5387 | /* Back to the top, do it again. */ | |
5388 | } | |
5389 | } | |
5390 | ||
c906108c SS |
5391 | /* Read a minimal amount of information into the minimal die structure. */ |
5392 | ||
fe1b8b76 | 5393 | static gdb_byte * |
72bf9492 DJ |
5394 | read_partial_die (struct partial_die_info *part_die, |
5395 | struct abbrev_info *abbrev, | |
5396 | unsigned int abbrev_len, bfd *abfd, | |
fe1b8b76 | 5397 | gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 5398 | { |
72bf9492 | 5399 | unsigned int bytes_read, i; |
c906108c | 5400 | struct attribute attr; |
c5aa993b | 5401 | int has_low_pc_attr = 0; |
c906108c SS |
5402 | int has_high_pc_attr = 0; |
5403 | ||
72bf9492 | 5404 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 5405 | |
6502dd73 | 5406 | part_die->offset = info_ptr - dwarf2_per_objfile->info_buffer; |
72bf9492 DJ |
5407 | |
5408 | info_ptr += abbrev_len; | |
5409 | ||
5410 | if (abbrev == NULL) | |
5411 | return info_ptr; | |
5412 | ||
c906108c SS |
5413 | part_die->tag = abbrev->tag; |
5414 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
5415 | |
5416 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5417 | { | |
e7c27a73 | 5418 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
5419 | |
5420 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 5421 | partial symbol table. */ |
c906108c SS |
5422 | switch (attr.name) |
5423 | { | |
5424 | case DW_AT_name: | |
5425 | ||
5426 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
5427 | if (part_die->name == NULL) | |
5428 | part_die->name = DW_STRING (&attr); | |
5429 | break; | |
57c22c6c BR |
5430 | case DW_AT_comp_dir: |
5431 | if (part_die->dirname == NULL) | |
5432 | part_die->dirname = DW_STRING (&attr); | |
5433 | break; | |
c906108c SS |
5434 | case DW_AT_MIPS_linkage_name: |
5435 | part_die->name = DW_STRING (&attr); | |
5436 | break; | |
5437 | case DW_AT_low_pc: | |
5438 | has_low_pc_attr = 1; | |
5439 | part_die->lowpc = DW_ADDR (&attr); | |
5440 | break; | |
5441 | case DW_AT_high_pc: | |
5442 | has_high_pc_attr = 1; | |
5443 | part_die->highpc = DW_ADDR (&attr); | |
5444 | break; | |
5445 | case DW_AT_location: | |
8e19ed76 PS |
5446 | /* Support the .debug_loc offsets */ |
5447 | if (attr_form_is_block (&attr)) | |
5448 | { | |
5449 | part_die->locdesc = DW_BLOCK (&attr); | |
5450 | } | |
5451 | else if (attr.form == DW_FORM_data4 || attr.form == DW_FORM_data8) | |
5452 | { | |
4d3c2250 | 5453 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5454 | } |
5455 | else | |
5456 | { | |
4d3c2250 KB |
5457 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
5458 | "partial symbol information"); | |
8e19ed76 | 5459 | } |
c906108c SS |
5460 | break; |
5461 | case DW_AT_language: | |
5462 | part_die->language = DW_UNSND (&attr); | |
5463 | break; | |
5464 | case DW_AT_external: | |
5465 | part_die->is_external = DW_UNSND (&attr); | |
5466 | break; | |
5467 | case DW_AT_declaration: | |
5468 | part_die->is_declaration = DW_UNSND (&attr); | |
5469 | break; | |
5470 | case DW_AT_type: | |
5471 | part_die->has_type = 1; | |
5472 | break; | |
5473 | case DW_AT_abstract_origin: | |
5474 | case DW_AT_specification: | |
72bf9492 DJ |
5475 | case DW_AT_extension: |
5476 | part_die->has_specification = 1; | |
5477 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c SS |
5478 | break; |
5479 | case DW_AT_sibling: | |
5480 | /* Ignore absolute siblings, they might point outside of | |
5481 | the current compile unit. */ | |
5482 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 5483 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 5484 | else |
6502dd73 DJ |
5485 | part_die->sibling = dwarf2_per_objfile->info_buffer |
5486 | + dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c | 5487 | break; |
aaa75496 JB |
5488 | case DW_AT_stmt_list: |
5489 | part_die->has_stmt_list = 1; | |
5490 | part_die->line_offset = DW_UNSND (&attr); | |
5491 | break; | |
c906108c SS |
5492 | default: |
5493 | break; | |
5494 | } | |
5495 | } | |
5496 | ||
c906108c SS |
5497 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
5498 | eliminate duplicate copies of functions and vtables and such. | |
5499 | The linker will arbitrarily choose one and discard the others. | |
5500 | The AT_*_pc values for such functions refer to local labels in | |
5501 | these sections. If the section from that file was discarded, the | |
5502 | labels are not in the output, so the relocs get a value of 0. | |
5503 | If this is a discarded function, mark the pc bounds as invalid, | |
5504 | so that GDB will ignore it. */ | |
5505 | if (has_low_pc_attr && has_high_pc_attr | |
5506 | && part_die->lowpc < part_die->highpc | |
5507 | && (part_die->lowpc != 0 | |
5508 | || (bfd_get_file_flags (abfd) & HAS_RELOC))) | |
0b010bcc | 5509 | part_die->has_pc_info = 1; |
c906108c SS |
5510 | return info_ptr; |
5511 | } | |
5512 | ||
72bf9492 DJ |
5513 | /* Find a cached partial DIE at OFFSET in CU. */ |
5514 | ||
5515 | static struct partial_die_info * | |
5516 | find_partial_die_in_comp_unit (unsigned long offset, struct dwarf2_cu *cu) | |
5517 | { | |
5518 | struct partial_die_info *lookup_die = NULL; | |
5519 | struct partial_die_info part_die; | |
5520 | ||
5521 | part_die.offset = offset; | |
5522 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
5523 | ||
72bf9492 DJ |
5524 | return lookup_die; |
5525 | } | |
5526 | ||
5527 | /* Find a partial DIE at OFFSET, which may or may not be in CU. */ | |
5528 | ||
5529 | static struct partial_die_info * | |
10b3939b | 5530 | find_partial_die (unsigned long offset, struct dwarf2_cu *cu) |
72bf9492 | 5531 | { |
5afb4e99 DJ |
5532 | struct dwarf2_per_cu_data *per_cu = NULL; |
5533 | struct partial_die_info *pd = NULL; | |
72bf9492 DJ |
5534 | |
5535 | if (offset >= cu->header.offset | |
5536 | && offset < cu->header.offset + cu->header.length) | |
5afb4e99 DJ |
5537 | { |
5538 | pd = find_partial_die_in_comp_unit (offset, cu); | |
5539 | if (pd != NULL) | |
5540 | return pd; | |
5541 | } | |
72bf9492 | 5542 | |
ae038cb0 DJ |
5543 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
5544 | ||
ae038cb0 DJ |
5545 | if (per_cu->cu == NULL) |
5546 | { | |
5547 | load_comp_unit (per_cu, cu->objfile); | |
5548 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5549 | dwarf2_per_objfile->read_in_chain = per_cu; | |
5550 | } | |
5551 | ||
5552 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
5553 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
5554 | ||
5555 | if (pd == NULL && per_cu->load_all_dies == 0) | |
5556 | { | |
5557 | struct cleanup *back_to; | |
5558 | struct partial_die_info comp_unit_die; | |
5559 | struct abbrev_info *abbrev; | |
5560 | unsigned int bytes_read; | |
5561 | char *info_ptr; | |
5562 | ||
5563 | per_cu->load_all_dies = 1; | |
5564 | ||
5565 | /* Re-read the DIEs. */ | |
5566 | back_to = make_cleanup (null_cleanup, 0); | |
5567 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
5568 | { | |
5569 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
5570 | back_to = make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); | |
5571 | } | |
5572 | info_ptr = per_cu->cu->header.first_die_ptr; | |
5573 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); | |
5574 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
5575 | per_cu->cu->objfile->obfd, info_ptr, | |
5576 | per_cu->cu); | |
5577 | if (comp_unit_die.has_children) | |
5578 | load_partial_dies (per_cu->cu->objfile->obfd, info_ptr, 0, per_cu->cu); | |
5579 | do_cleanups (back_to); | |
5580 | ||
5581 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
5582 | } | |
5583 | ||
5584 | if (pd == NULL) | |
5585 | internal_error (__FILE__, __LINE__, | |
5586 | _("could not find partial DIE 0x%lx in cache [from module %s]\n"), | |
5587 | offset, bfd_get_filename (cu->objfile->obfd)); | |
5588 | return pd; | |
72bf9492 DJ |
5589 | } |
5590 | ||
5591 | /* Adjust PART_DIE before generating a symbol for it. This function | |
5592 | may set the is_external flag or change the DIE's name. */ | |
5593 | ||
5594 | static void | |
5595 | fixup_partial_die (struct partial_die_info *part_die, | |
5596 | struct dwarf2_cu *cu) | |
5597 | { | |
5598 | /* If we found a reference attribute and the DIE has no name, try | |
5599 | to find a name in the referred to DIE. */ | |
5600 | ||
5601 | if (part_die->name == NULL && part_die->has_specification) | |
5602 | { | |
5603 | struct partial_die_info *spec_die; | |
72bf9492 | 5604 | |
10b3939b | 5605 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 5606 | |
10b3939b | 5607 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
5608 | |
5609 | if (spec_die->name) | |
5610 | { | |
5611 | part_die->name = spec_die->name; | |
5612 | ||
5613 | /* Copy DW_AT_external attribute if it is set. */ | |
5614 | if (spec_die->is_external) | |
5615 | part_die->is_external = spec_die->is_external; | |
5616 | } | |
5617 | } | |
5618 | ||
5619 | /* Set default names for some unnamed DIEs. */ | |
5620 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
5621 | || part_die->tag == DW_TAG_class_type)) | |
5622 | part_die->name = "(anonymous class)"; | |
5623 | ||
5624 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
5625 | part_die->name = "(anonymous namespace)"; | |
5626 | ||
5627 | if (part_die->tag == DW_TAG_structure_type | |
5628 | || part_die->tag == DW_TAG_class_type | |
5629 | || part_die->tag == DW_TAG_union_type) | |
5630 | guess_structure_name (part_die, cu); | |
5631 | } | |
5632 | ||
639d11d3 DC |
5633 | /* Read the die from the .debug_info section buffer. Set DIEP to |
5634 | point to a newly allocated die with its information, except for its | |
5635 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
5636 | whether the die has children or not. */ | |
c906108c | 5637 | |
fe1b8b76 JB |
5638 | static gdb_byte * |
5639 | read_full_die (struct die_info **diep, bfd *abfd, gdb_byte *info_ptr, | |
e7c27a73 | 5640 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
5641 | { |
5642 | unsigned int abbrev_number, bytes_read, i, offset; | |
5643 | struct abbrev_info *abbrev; | |
5644 | struct die_info *die; | |
5645 | ||
6502dd73 | 5646 | offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
5647 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5648 | info_ptr += bytes_read; | |
5649 | if (!abbrev_number) | |
5650 | { | |
5651 | die = dwarf_alloc_die (); | |
5652 | die->tag = 0; | |
5653 | die->abbrev = abbrev_number; | |
5654 | die->type = NULL; | |
5655 | *diep = die; | |
639d11d3 | 5656 | *has_children = 0; |
c906108c SS |
5657 | return info_ptr; |
5658 | } | |
5659 | ||
e7c27a73 | 5660 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
5661 | if (!abbrev) |
5662 | { | |
8a3fe4f8 | 5663 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
72bf9492 | 5664 | abbrev_number, |
639d11d3 | 5665 | bfd_get_filename (abfd)); |
c906108c SS |
5666 | } |
5667 | die = dwarf_alloc_die (); | |
5668 | die->offset = offset; | |
5669 | die->tag = abbrev->tag; | |
c906108c SS |
5670 | die->abbrev = abbrev_number; |
5671 | die->type = NULL; | |
5672 | ||
5673 | die->num_attrs = abbrev->num_attrs; | |
5674 | die->attrs = (struct attribute *) | |
5675 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
5676 | ||
5677 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5678 | { | |
5679 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 5680 | abfd, info_ptr, cu); |
10b3939b DJ |
5681 | |
5682 | /* If this attribute is an absolute reference to a different | |
5683 | compilation unit, make sure that compilation unit is loaded | |
5684 | also. */ | |
5685 | if (die->attrs[i].form == DW_FORM_ref_addr | |
5686 | && (DW_ADDR (&die->attrs[i]) < cu->header.offset | |
5687 | || (DW_ADDR (&die->attrs[i]) | |
5688 | >= cu->header.offset + cu->header.length))) | |
5689 | { | |
5690 | struct dwarf2_per_cu_data *per_cu; | |
5691 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (&die->attrs[i]), | |
5692 | cu->objfile); | |
5693 | ||
5694 | /* Mark the dependence relation so that we don't flush PER_CU | |
5695 | too early. */ | |
5696 | dwarf2_add_dependence (cu, per_cu); | |
5697 | ||
5698 | /* If it's already on the queue, we have nothing to do. */ | |
5699 | if (per_cu->queued) | |
5700 | continue; | |
5701 | ||
5702 | /* If the compilation unit is already loaded, just mark it as | |
5703 | used. */ | |
5704 | if (per_cu->cu != NULL) | |
5705 | { | |
5706 | per_cu->cu->last_used = 0; | |
5707 | continue; | |
5708 | } | |
5709 | ||
5710 | /* Add it to the queue. */ | |
5711 | queue_comp_unit (per_cu); | |
5712 | } | |
c906108c SS |
5713 | } |
5714 | ||
5715 | *diep = die; | |
639d11d3 | 5716 | *has_children = abbrev->has_children; |
c906108c SS |
5717 | return info_ptr; |
5718 | } | |
5719 | ||
a8329558 | 5720 | /* Read an attribute value described by an attribute form. */ |
c906108c | 5721 | |
fe1b8b76 | 5722 | static gdb_byte * |
a8329558 | 5723 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 5724 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 5725 | struct dwarf2_cu *cu) |
c906108c | 5726 | { |
e7c27a73 | 5727 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5728 | unsigned int bytes_read; |
5729 | struct dwarf_block *blk; | |
5730 | ||
a8329558 KW |
5731 | attr->form = form; |
5732 | switch (form) | |
c906108c SS |
5733 | { |
5734 | case DW_FORM_addr: | |
5735 | case DW_FORM_ref_addr: | |
e7c27a73 | 5736 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 5737 | info_ptr += bytes_read; |
c906108c SS |
5738 | break; |
5739 | case DW_FORM_block2: | |
7b5a2f43 | 5740 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5741 | blk->size = read_2_bytes (abfd, info_ptr); |
5742 | info_ptr += 2; | |
5743 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5744 | info_ptr += blk->size; | |
5745 | DW_BLOCK (attr) = blk; | |
5746 | break; | |
5747 | case DW_FORM_block4: | |
7b5a2f43 | 5748 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5749 | blk->size = read_4_bytes (abfd, info_ptr); |
5750 | info_ptr += 4; | |
5751 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5752 | info_ptr += blk->size; | |
5753 | DW_BLOCK (attr) = blk; | |
5754 | break; | |
5755 | case DW_FORM_data2: | |
5756 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
5757 | info_ptr += 2; | |
5758 | break; | |
5759 | case DW_FORM_data4: | |
5760 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
5761 | info_ptr += 4; | |
5762 | break; | |
5763 | case DW_FORM_data8: | |
5764 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
5765 | info_ptr += 8; | |
5766 | break; | |
5767 | case DW_FORM_string: | |
5768 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
5769 | info_ptr += bytes_read; | |
5770 | break; | |
4bdf3d34 JJ |
5771 | case DW_FORM_strp: |
5772 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
5773 | &bytes_read); | |
5774 | info_ptr += bytes_read; | |
5775 | break; | |
c906108c | 5776 | case DW_FORM_block: |
7b5a2f43 | 5777 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5778 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5779 | info_ptr += bytes_read; | |
5780 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5781 | info_ptr += blk->size; | |
5782 | DW_BLOCK (attr) = blk; | |
5783 | break; | |
5784 | case DW_FORM_block1: | |
7b5a2f43 | 5785 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5786 | blk->size = read_1_byte (abfd, info_ptr); |
5787 | info_ptr += 1; | |
5788 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5789 | info_ptr += blk->size; | |
5790 | DW_BLOCK (attr) = blk; | |
5791 | break; | |
5792 | case DW_FORM_data1: | |
5793 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
5794 | info_ptr += 1; | |
5795 | break; | |
5796 | case DW_FORM_flag: | |
5797 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
5798 | info_ptr += 1; | |
5799 | break; | |
5800 | case DW_FORM_sdata: | |
5801 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
5802 | info_ptr += bytes_read; | |
5803 | break; | |
5804 | case DW_FORM_udata: | |
5805 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5806 | info_ptr += bytes_read; | |
5807 | break; | |
5808 | case DW_FORM_ref1: | |
10b3939b | 5809 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
5810 | info_ptr += 1; |
5811 | break; | |
5812 | case DW_FORM_ref2: | |
10b3939b | 5813 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
5814 | info_ptr += 2; |
5815 | break; | |
5816 | case DW_FORM_ref4: | |
10b3939b | 5817 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
5818 | info_ptr += 4; |
5819 | break; | |
613e1657 | 5820 | case DW_FORM_ref8: |
10b3939b | 5821 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
5822 | info_ptr += 8; |
5823 | break; | |
c906108c | 5824 | case DW_FORM_ref_udata: |
10b3939b DJ |
5825 | DW_ADDR (attr) = (cu->header.offset |
5826 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
5827 | info_ptr += bytes_read; |
5828 | break; | |
c906108c | 5829 | case DW_FORM_indirect: |
a8329558 KW |
5830 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5831 | info_ptr += bytes_read; | |
e7c27a73 | 5832 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 5833 | break; |
c906108c | 5834 | default: |
8a3fe4f8 | 5835 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
5836 | dwarf_form_name (form), |
5837 | bfd_get_filename (abfd)); | |
c906108c SS |
5838 | } |
5839 | return info_ptr; | |
5840 | } | |
5841 | ||
a8329558 KW |
5842 | /* Read an attribute described by an abbreviated attribute. */ |
5843 | ||
fe1b8b76 | 5844 | static gdb_byte * |
a8329558 | 5845 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 5846 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
5847 | { |
5848 | attr->name = abbrev->name; | |
e7c27a73 | 5849 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
5850 | } |
5851 | ||
c906108c SS |
5852 | /* read dwarf information from a buffer */ |
5853 | ||
5854 | static unsigned int | |
fe1b8b76 | 5855 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 5856 | { |
fe1b8b76 | 5857 | return bfd_get_8 (abfd, buf); |
c906108c SS |
5858 | } |
5859 | ||
5860 | static int | |
fe1b8b76 | 5861 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 5862 | { |
fe1b8b76 | 5863 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
5864 | } |
5865 | ||
5866 | static unsigned int | |
fe1b8b76 | 5867 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5868 | { |
fe1b8b76 | 5869 | return bfd_get_16 (abfd, buf); |
c906108c SS |
5870 | } |
5871 | ||
5872 | static int | |
fe1b8b76 | 5873 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5874 | { |
fe1b8b76 | 5875 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
5876 | } |
5877 | ||
5878 | static unsigned int | |
fe1b8b76 | 5879 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5880 | { |
fe1b8b76 | 5881 | return bfd_get_32 (abfd, buf); |
c906108c SS |
5882 | } |
5883 | ||
5884 | static int | |
fe1b8b76 | 5885 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5886 | { |
fe1b8b76 | 5887 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
5888 | } |
5889 | ||
ce5d95e1 | 5890 | static unsigned long |
fe1b8b76 | 5891 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5892 | { |
fe1b8b76 | 5893 | return bfd_get_64 (abfd, buf); |
c906108c SS |
5894 | } |
5895 | ||
5896 | static CORE_ADDR | |
fe1b8b76 | 5897 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 5898 | unsigned int *bytes_read) |
c906108c | 5899 | { |
e7c27a73 | 5900 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5901 | CORE_ADDR retval = 0; |
5902 | ||
107d2387 | 5903 | if (cu_header->signed_addr_p) |
c906108c | 5904 | { |
107d2387 AC |
5905 | switch (cu_header->addr_size) |
5906 | { | |
5907 | case 2: | |
fe1b8b76 | 5908 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
5909 | break; |
5910 | case 4: | |
fe1b8b76 | 5911 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
5912 | break; |
5913 | case 8: | |
fe1b8b76 | 5914 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
5915 | break; |
5916 | default: | |
8e65ff28 | 5917 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5918 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 5919 | bfd_get_filename (abfd)); |
107d2387 AC |
5920 | } |
5921 | } | |
5922 | else | |
5923 | { | |
5924 | switch (cu_header->addr_size) | |
5925 | { | |
5926 | case 2: | |
fe1b8b76 | 5927 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
5928 | break; |
5929 | case 4: | |
fe1b8b76 | 5930 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
5931 | break; |
5932 | case 8: | |
fe1b8b76 | 5933 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
5934 | break; |
5935 | default: | |
8e65ff28 | 5936 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 5937 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 5938 | bfd_get_filename (abfd)); |
107d2387 | 5939 | } |
c906108c | 5940 | } |
64367e0a | 5941 | |
107d2387 AC |
5942 | *bytes_read = cu_header->addr_size; |
5943 | return retval; | |
c906108c SS |
5944 | } |
5945 | ||
f7ef9339 | 5946 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
5947 | specification allows the initial length to take up either 4 bytes |
5948 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
5949 | bytes describe the length and all offsets will be 8 bytes in length | |
5950 | instead of 4. | |
5951 | ||
f7ef9339 KB |
5952 | An older, non-standard 64-bit format is also handled by this |
5953 | function. The older format in question stores the initial length | |
5954 | as an 8-byte quantity without an escape value. Lengths greater | |
5955 | than 2^32 aren't very common which means that the initial 4 bytes | |
5956 | is almost always zero. Since a length value of zero doesn't make | |
5957 | sense for the 32-bit format, this initial zero can be considered to | |
5958 | be an escape value which indicates the presence of the older 64-bit | |
5959 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
5960 | greater than 4GB. If it becomes necessary to handle lengths |
5961 | somewhat larger than 4GB, we could allow other small values (such | |
5962 | as the non-sensical values of 1, 2, and 3) to also be used as | |
5963 | escape values indicating the presence of the old format. | |
f7ef9339 | 5964 | |
917c78fc MK |
5965 | The value returned via bytes_read should be used to increment the |
5966 | relevant pointer after calling read_initial_length(). | |
613e1657 KB |
5967 | |
5968 | As a side effect, this function sets the fields initial_length_size | |
5969 | and offset_size in cu_header to the values appropriate for the | |
5970 | length field. (The format of the initial length field determines | |
dd373385 | 5971 | the width of file offsets to be fetched later with read_offset().) |
613e1657 KB |
5972 | |
5973 | [ Note: read_initial_length() and read_offset() are based on the | |
5974 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 5975 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
5976 | from: |
5977 | ||
f7ef9339 | 5978 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
5979 | |
5980 | This document is only a draft and is subject to change. (So beware.) | |
5981 | ||
f7ef9339 | 5982 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
5983 | determined empirically by examining 64-bit ELF files produced by |
5984 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
5985 | |
5986 | - Kevin, July 16, 2002 | |
613e1657 KB |
5987 | ] */ |
5988 | ||
5989 | static LONGEST | |
fe1b8b76 | 5990 | read_initial_length (bfd *abfd, gdb_byte *buf, struct comp_unit_head *cu_header, |
891d2f0b | 5991 | unsigned int *bytes_read) |
613e1657 | 5992 | { |
fe1b8b76 | 5993 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 5994 | |
dd373385 | 5995 | if (length == 0xffffffff) |
613e1657 | 5996 | { |
fe1b8b76 | 5997 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 5998 | *bytes_read = 12; |
613e1657 | 5999 | } |
dd373385 | 6000 | else if (length == 0) |
f7ef9339 | 6001 | { |
dd373385 | 6002 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 6003 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 6004 | *bytes_read = 8; |
f7ef9339 | 6005 | } |
613e1657 KB |
6006 | else |
6007 | { | |
6008 | *bytes_read = 4; | |
613e1657 KB |
6009 | } |
6010 | ||
dd373385 EZ |
6011 | if (cu_header) |
6012 | { | |
6013 | gdb_assert (cu_header->initial_length_size == 0 | |
6014 | || cu_header->initial_length_size == 4 | |
6015 | || cu_header->initial_length_size == 8 | |
6016 | || cu_header->initial_length_size == 12); | |
6017 | ||
6018 | if (cu_header->initial_length_size != 0 | |
6019 | && cu_header->initial_length_size != *bytes_read) | |
6020 | complaint (&symfile_complaints, | |
6021 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
6022 | ||
6023 | cu_header->initial_length_size = *bytes_read; | |
6024 | cu_header->offset_size = (*bytes_read == 4) ? 4 : 8; | |
6025 | } | |
6026 | ||
6027 | return length; | |
613e1657 KB |
6028 | } |
6029 | ||
6030 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 6031 | given by cu_header->offset_size. */ |
613e1657 KB |
6032 | |
6033 | static LONGEST | |
fe1b8b76 | 6034 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 6035 | unsigned int *bytes_read) |
613e1657 KB |
6036 | { |
6037 | LONGEST retval = 0; | |
6038 | ||
6039 | switch (cu_header->offset_size) | |
6040 | { | |
6041 | case 4: | |
fe1b8b76 | 6042 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
6043 | *bytes_read = 4; |
6044 | break; | |
6045 | case 8: | |
fe1b8b76 | 6046 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
6047 | *bytes_read = 8; |
6048 | break; | |
6049 | default: | |
8e65ff28 | 6050 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6051 | _("read_offset: bad switch [in module %s]"), |
659b0389 | 6052 | bfd_get_filename (abfd)); |
613e1657 KB |
6053 | } |
6054 | ||
917c78fc | 6055 | return retval; |
613e1657 KB |
6056 | } |
6057 | ||
fe1b8b76 JB |
6058 | static gdb_byte * |
6059 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
6060 | { |
6061 | /* If the size of a host char is 8 bits, we can return a pointer | |
6062 | to the buffer, otherwise we have to copy the data to a buffer | |
6063 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6064 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 6065 | return buf; |
c906108c SS |
6066 | } |
6067 | ||
6068 | static char * | |
fe1b8b76 | 6069 | read_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
6070 | { |
6071 | /* If the size of a host char is 8 bits, we can return a pointer | |
6072 | to the string, otherwise we have to copy the string to a buffer | |
6073 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6074 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
6075 | if (*buf == '\0') |
6076 | { | |
6077 | *bytes_read_ptr = 1; | |
6078 | return NULL; | |
6079 | } | |
fe1b8b76 JB |
6080 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
6081 | return (char *) buf; | |
4bdf3d34 JJ |
6082 | } |
6083 | ||
6084 | static char * | |
fe1b8b76 | 6085 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
6086 | const struct comp_unit_head *cu_header, |
6087 | unsigned int *bytes_read_ptr) | |
6088 | { | |
6089 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
891d2f0b | 6090 | bytes_read_ptr); |
c906108c | 6091 | |
6502dd73 | 6092 | if (dwarf2_per_objfile->str_buffer == NULL) |
c906108c | 6093 | { |
8a3fe4f8 | 6094 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 6095 | bfd_get_filename (abfd)); |
4bdf3d34 | 6096 | return NULL; |
c906108c | 6097 | } |
6502dd73 | 6098 | if (str_offset >= dwarf2_per_objfile->str_size) |
c906108c | 6099 | { |
8a3fe4f8 | 6100 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 6101 | bfd_get_filename (abfd)); |
c906108c SS |
6102 | return NULL; |
6103 | } | |
4bdf3d34 | 6104 | gdb_assert (HOST_CHAR_BIT == 8); |
6502dd73 | 6105 | if (dwarf2_per_objfile->str_buffer[str_offset] == '\0') |
4bdf3d34 | 6106 | return NULL; |
fe1b8b76 | 6107 | return (char *) (dwarf2_per_objfile->str_buffer + str_offset); |
c906108c SS |
6108 | } |
6109 | ||
ce5d95e1 | 6110 | static unsigned long |
fe1b8b76 | 6111 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6112 | { |
ce5d95e1 JB |
6113 | unsigned long result; |
6114 | unsigned int num_read; | |
c906108c SS |
6115 | int i, shift; |
6116 | unsigned char byte; | |
6117 | ||
6118 | result = 0; | |
6119 | shift = 0; | |
6120 | num_read = 0; | |
6121 | i = 0; | |
6122 | while (1) | |
6123 | { | |
fe1b8b76 | 6124 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6125 | buf++; |
6126 | num_read++; | |
ce5d95e1 | 6127 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
6128 | if ((byte & 128) == 0) |
6129 | { | |
6130 | break; | |
6131 | } | |
6132 | shift += 7; | |
6133 | } | |
6134 | *bytes_read_ptr = num_read; | |
6135 | return result; | |
6136 | } | |
6137 | ||
ce5d95e1 | 6138 | static long |
fe1b8b76 | 6139 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6140 | { |
ce5d95e1 | 6141 | long result; |
77e0b926 | 6142 | int i, shift, num_read; |
c906108c SS |
6143 | unsigned char byte; |
6144 | ||
6145 | result = 0; | |
6146 | shift = 0; | |
c906108c SS |
6147 | num_read = 0; |
6148 | i = 0; | |
6149 | while (1) | |
6150 | { | |
fe1b8b76 | 6151 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6152 | buf++; |
6153 | num_read++; | |
ce5d95e1 | 6154 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
6155 | shift += 7; |
6156 | if ((byte & 128) == 0) | |
6157 | { | |
6158 | break; | |
6159 | } | |
6160 | } | |
77e0b926 DJ |
6161 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
6162 | result |= -(((long)1) << shift); | |
c906108c SS |
6163 | *bytes_read_ptr = num_read; |
6164 | return result; | |
6165 | } | |
6166 | ||
4bb7a0a7 DJ |
6167 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
6168 | ||
fe1b8b76 JB |
6169 | static gdb_byte * |
6170 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
6171 | { |
6172 | int byte; | |
6173 | ||
6174 | while (1) | |
6175 | { | |
fe1b8b76 | 6176 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
6177 | buf++; |
6178 | if ((byte & 128) == 0) | |
6179 | return buf; | |
6180 | } | |
6181 | } | |
6182 | ||
c906108c | 6183 | static void |
e142c38c | 6184 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
6185 | { |
6186 | switch (lang) | |
6187 | { | |
6188 | case DW_LANG_C89: | |
6189 | case DW_LANG_C: | |
e142c38c | 6190 | cu->language = language_c; |
c906108c SS |
6191 | break; |
6192 | case DW_LANG_C_plus_plus: | |
e142c38c | 6193 | cu->language = language_cplus; |
c906108c SS |
6194 | break; |
6195 | case DW_LANG_Fortran77: | |
6196 | case DW_LANG_Fortran90: | |
b21b22e0 | 6197 | case DW_LANG_Fortran95: |
e142c38c | 6198 | cu->language = language_fortran; |
c906108c SS |
6199 | break; |
6200 | case DW_LANG_Mips_Assembler: | |
e142c38c | 6201 | cu->language = language_asm; |
c906108c | 6202 | break; |
bebd888e | 6203 | case DW_LANG_Java: |
e142c38c | 6204 | cu->language = language_java; |
bebd888e | 6205 | break; |
c906108c | 6206 | case DW_LANG_Ada83: |
8aaf0b47 | 6207 | case DW_LANG_Ada95: |
bc5f45f8 JB |
6208 | cu->language = language_ada; |
6209 | break; | |
72019c9c GM |
6210 | case DW_LANG_Modula2: |
6211 | cu->language = language_m2; | |
6212 | break; | |
c906108c SS |
6213 | case DW_LANG_Cobol74: |
6214 | case DW_LANG_Cobol85: | |
6215 | case DW_LANG_Pascal83: | |
c906108c | 6216 | default: |
e142c38c | 6217 | cu->language = language_minimal; |
c906108c SS |
6218 | break; |
6219 | } | |
e142c38c | 6220 | cu->language_defn = language_def (cu->language); |
c906108c SS |
6221 | } |
6222 | ||
6223 | /* Return the named attribute or NULL if not there. */ | |
6224 | ||
6225 | static struct attribute * | |
e142c38c | 6226 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
6227 | { |
6228 | unsigned int i; | |
6229 | struct attribute *spec = NULL; | |
6230 | ||
6231 | for (i = 0; i < die->num_attrs; ++i) | |
6232 | { | |
6233 | if (die->attrs[i].name == name) | |
10b3939b | 6234 | return &die->attrs[i]; |
c906108c SS |
6235 | if (die->attrs[i].name == DW_AT_specification |
6236 | || die->attrs[i].name == DW_AT_abstract_origin) | |
6237 | spec = &die->attrs[i]; | |
6238 | } | |
c906108c | 6239 | |
10b3939b DJ |
6240 | if (spec) |
6241 | return dwarf2_attr (follow_die_ref (die, spec, cu), name, cu); | |
c5aa993b | 6242 | |
c906108c SS |
6243 | return NULL; |
6244 | } | |
6245 | ||
05cf31d1 JB |
6246 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
6247 | and holds a non-zero value. This function should only be used for | |
6248 | DW_FORM_flag attributes. */ | |
6249 | ||
6250 | static int | |
6251 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
6252 | { | |
6253 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
6254 | ||
6255 | return (attr && DW_UNSND (attr)); | |
6256 | } | |
6257 | ||
3ca72b44 | 6258 | static int |
e142c38c | 6259 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 6260 | { |
05cf31d1 JB |
6261 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
6262 | which value is non-zero. However, we have to be careful with | |
6263 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
6264 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
6265 | end up accidently finding a declaration attribute that belongs | |
6266 | to a different DIE referenced by the specification attribute, | |
6267 | even though the given DIE does not have a declaration attribute. */ | |
6268 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
6269 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
6270 | } |
6271 | ||
63d06c5c DC |
6272 | /* Return the die giving the specification for DIE, if there is |
6273 | one. */ | |
6274 | ||
6275 | static struct die_info * | |
e142c38c | 6276 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 6277 | { |
e142c38c | 6278 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
6279 | |
6280 | if (spec_attr == NULL) | |
6281 | return NULL; | |
6282 | else | |
10b3939b | 6283 | return follow_die_ref (die, spec_attr, cu); |
63d06c5c | 6284 | } |
c906108c | 6285 | |
debd256d JB |
6286 | /* Free the line_header structure *LH, and any arrays and strings it |
6287 | refers to. */ | |
6288 | static void | |
6289 | free_line_header (struct line_header *lh) | |
6290 | { | |
6291 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 6292 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
6293 | |
6294 | /* Remember that all the lh->file_names[i].name pointers are | |
6295 | pointers into debug_line_buffer, and don't need to be freed. */ | |
6296 | if (lh->file_names) | |
a8bc7b56 | 6297 | xfree (lh->file_names); |
debd256d JB |
6298 | |
6299 | /* Similarly for the include directory names. */ | |
6300 | if (lh->include_dirs) | |
a8bc7b56 | 6301 | xfree (lh->include_dirs); |
debd256d | 6302 | |
a8bc7b56 | 6303 | xfree (lh); |
debd256d JB |
6304 | } |
6305 | ||
6306 | ||
6307 | /* Add an entry to LH's include directory table. */ | |
6308 | static void | |
6309 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 6310 | { |
debd256d JB |
6311 | /* Grow the array if necessary. */ |
6312 | if (lh->include_dirs_size == 0) | |
c5aa993b | 6313 | { |
debd256d JB |
6314 | lh->include_dirs_size = 1; /* for testing */ |
6315 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
6316 | * sizeof (*lh->include_dirs)); | |
6317 | } | |
6318 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
6319 | { | |
6320 | lh->include_dirs_size *= 2; | |
6321 | lh->include_dirs = xrealloc (lh->include_dirs, | |
6322 | (lh->include_dirs_size | |
6323 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 6324 | } |
c906108c | 6325 | |
debd256d JB |
6326 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
6327 | } | |
6328 | ||
6329 | ||
6330 | /* Add an entry to LH's file name table. */ | |
6331 | static void | |
6332 | add_file_name (struct line_header *lh, | |
6333 | char *name, | |
6334 | unsigned int dir_index, | |
6335 | unsigned int mod_time, | |
6336 | unsigned int length) | |
6337 | { | |
6338 | struct file_entry *fe; | |
6339 | ||
6340 | /* Grow the array if necessary. */ | |
6341 | if (lh->file_names_size == 0) | |
6342 | { | |
6343 | lh->file_names_size = 1; /* for testing */ | |
6344 | lh->file_names = xmalloc (lh->file_names_size | |
6345 | * sizeof (*lh->file_names)); | |
6346 | } | |
6347 | else if (lh->num_file_names >= lh->file_names_size) | |
6348 | { | |
6349 | lh->file_names_size *= 2; | |
6350 | lh->file_names = xrealloc (lh->file_names, | |
6351 | (lh->file_names_size | |
6352 | * sizeof (*lh->file_names))); | |
6353 | } | |
6354 | ||
6355 | fe = &lh->file_names[lh->num_file_names++]; | |
6356 | fe->name = name; | |
6357 | fe->dir_index = dir_index; | |
6358 | fe->mod_time = mod_time; | |
6359 | fe->length = length; | |
aaa75496 | 6360 | fe->included_p = 0; |
debd256d JB |
6361 | } |
6362 | ||
6363 | ||
6364 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
6365 | .debug_line, according to the endianness of ABFD. Return a pointer |
6366 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
6367 | |
6368 | NOTE: the strings in the include directory and file name tables of | |
6369 | the returned object point into debug_line_buffer, and must not be | |
6370 | freed. */ | |
6371 | static struct line_header * | |
6372 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 6373 | struct dwarf2_cu *cu) |
debd256d JB |
6374 | { |
6375 | struct cleanup *back_to; | |
6376 | struct line_header *lh; | |
fe1b8b76 | 6377 | gdb_byte *line_ptr; |
891d2f0b | 6378 | unsigned int bytes_read; |
debd256d JB |
6379 | int i; |
6380 | char *cur_dir, *cur_file; | |
6381 | ||
6502dd73 | 6382 | if (dwarf2_per_objfile->line_buffer == NULL) |
debd256d | 6383 | { |
e2e0b3e5 | 6384 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
6385 | return 0; |
6386 | } | |
6387 | ||
a738430d MK |
6388 | /* Make sure that at least there's room for the total_length field. |
6389 | That could be 12 bytes long, but we're just going to fudge that. */ | |
6502dd73 | 6390 | if (offset + 4 >= dwarf2_per_objfile->line_size) |
debd256d | 6391 | { |
4d3c2250 | 6392 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6393 | return 0; |
6394 | } | |
6395 | ||
6396 | lh = xmalloc (sizeof (*lh)); | |
6397 | memset (lh, 0, sizeof (*lh)); | |
6398 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
6399 | (void *) lh); | |
6400 | ||
6502dd73 | 6401 | line_ptr = dwarf2_per_objfile->line_buffer + offset; |
debd256d | 6402 | |
a738430d | 6403 | /* Read in the header. */ |
dd373385 EZ |
6404 | lh->total_length = |
6405 | read_initial_length (abfd, line_ptr, &cu->header, &bytes_read); | |
debd256d | 6406 | line_ptr += bytes_read; |
6502dd73 DJ |
6407 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line_buffer |
6408 | + dwarf2_per_objfile->line_size)) | |
debd256d | 6409 | { |
4d3c2250 | 6410 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6411 | return 0; |
6412 | } | |
6413 | lh->statement_program_end = line_ptr + lh->total_length; | |
6414 | lh->version = read_2_bytes (abfd, line_ptr); | |
6415 | line_ptr += 2; | |
e7c27a73 | 6416 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
6417 | line_ptr += bytes_read; |
6418 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
6419 | line_ptr += 1; | |
6420 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
6421 | line_ptr += 1; | |
6422 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
6423 | line_ptr += 1; | |
6424 | lh->line_range = read_1_byte (abfd, line_ptr); | |
6425 | line_ptr += 1; | |
6426 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
6427 | line_ptr += 1; | |
6428 | lh->standard_opcode_lengths | |
fe1b8b76 | 6429 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
6430 | |
6431 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
6432 | for (i = 1; i < lh->opcode_base; ++i) | |
6433 | { | |
6434 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
6435 | line_ptr += 1; | |
6436 | } | |
6437 | ||
a738430d | 6438 | /* Read directory table. */ |
debd256d JB |
6439 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6440 | { | |
6441 | line_ptr += bytes_read; | |
6442 | add_include_dir (lh, cur_dir); | |
6443 | } | |
6444 | line_ptr += bytes_read; | |
6445 | ||
a738430d | 6446 | /* Read file name table. */ |
debd256d JB |
6447 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6448 | { | |
6449 | unsigned int dir_index, mod_time, length; | |
6450 | ||
6451 | line_ptr += bytes_read; | |
6452 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6453 | line_ptr += bytes_read; | |
6454 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6455 | line_ptr += bytes_read; | |
6456 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6457 | line_ptr += bytes_read; | |
6458 | ||
6459 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6460 | } | |
6461 | line_ptr += bytes_read; | |
6462 | lh->statement_program_start = line_ptr; | |
6463 | ||
6502dd73 DJ |
6464 | if (line_ptr > (dwarf2_per_objfile->line_buffer |
6465 | + dwarf2_per_objfile->line_size)) | |
4d3c2250 | 6466 | complaint (&symfile_complaints, |
e2e0b3e5 | 6467 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
6468 | |
6469 | discard_cleanups (back_to); | |
6470 | return lh; | |
6471 | } | |
c906108c | 6472 | |
5fb290d7 DJ |
6473 | /* This function exists to work around a bug in certain compilers |
6474 | (particularly GCC 2.95), in which the first line number marker of a | |
6475 | function does not show up until after the prologue, right before | |
6476 | the second line number marker. This function shifts ADDRESS down | |
6477 | to the beginning of the function if necessary, and is called on | |
6478 | addresses passed to record_line. */ | |
6479 | ||
6480 | static CORE_ADDR | |
e142c38c | 6481 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
6482 | { |
6483 | struct function_range *fn; | |
6484 | ||
6485 | /* Find the function_range containing address. */ | |
e142c38c | 6486 | if (!cu->first_fn) |
5fb290d7 DJ |
6487 | return address; |
6488 | ||
e142c38c DJ |
6489 | if (!cu->cached_fn) |
6490 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 6491 | |
e142c38c | 6492 | fn = cu->cached_fn; |
5fb290d7 DJ |
6493 | while (fn) |
6494 | if (fn->lowpc <= address && fn->highpc > address) | |
6495 | goto found; | |
6496 | else | |
6497 | fn = fn->next; | |
6498 | ||
e142c38c DJ |
6499 | fn = cu->first_fn; |
6500 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
6501 | if (fn->lowpc <= address && fn->highpc > address) |
6502 | goto found; | |
6503 | else | |
6504 | fn = fn->next; | |
6505 | ||
6506 | return address; | |
6507 | ||
6508 | found: | |
6509 | if (fn->seen_line) | |
6510 | return address; | |
6511 | if (address != fn->lowpc) | |
4d3c2250 | 6512 | complaint (&symfile_complaints, |
e2e0b3e5 | 6513 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 6514 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
6515 | fn->seen_line = 1; |
6516 | return fn->lowpc; | |
6517 | } | |
6518 | ||
aaa75496 JB |
6519 | /* Decode the Line Number Program (LNP) for the given line_header |
6520 | structure and CU. The actual information extracted and the type | |
6521 | of structures created from the LNP depends on the value of PST. | |
6522 | ||
6523 | 1. If PST is NULL, then this procedure uses the data from the program | |
6524 | to create all necessary symbol tables, and their linetables. | |
6525 | The compilation directory of the file is passed in COMP_DIR, | |
6526 | and must not be NULL. | |
6527 | ||
6528 | 2. If PST is not NULL, this procedure reads the program to determine | |
6529 | the list of files included by the unit represented by PST, and | |
6530 | builds all the associated partial symbol tables. In this case, | |
6531 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
6532 | is not used to compute the full name of the symtab, and therefore | |
6533 | omitting it when building the partial symtab does not introduce | |
6534 | the potential for inconsistency - a partial symtab and its associated | |
6535 | symbtab having a different fullname -). */ | |
debd256d | 6536 | |
c906108c | 6537 | static void |
debd256d | 6538 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 6539 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 6540 | { |
fe1b8b76 JB |
6541 | gdb_byte *line_ptr; |
6542 | gdb_byte *line_end; | |
e7c27a73 | 6543 | unsigned int bytes_read; |
c906108c | 6544 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
6545 | CORE_ADDR baseaddr; |
6546 | struct objfile *objfile = cu->objfile; | |
aaa75496 | 6547 | const int decode_for_pst_p = (pst != NULL); |
e142c38c DJ |
6548 | |
6549 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6550 | |
debd256d JB |
6551 | line_ptr = lh->statement_program_start; |
6552 | line_end = lh->statement_program_end; | |
c906108c SS |
6553 | |
6554 | /* Read the statement sequences until there's nothing left. */ | |
6555 | while (line_ptr < line_end) | |
6556 | { | |
6557 | /* state machine registers */ | |
6558 | CORE_ADDR address = 0; | |
6559 | unsigned int file = 1; | |
6560 | unsigned int line = 1; | |
6561 | unsigned int column = 0; | |
debd256d | 6562 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
6563 | int basic_block = 0; |
6564 | int end_sequence = 0; | |
6565 | ||
aaa75496 | 6566 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 6567 | { |
aaa75496 | 6568 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
6569 | /* lh->include_dirs and lh->file_names are 0-based, but the |
6570 | directory and file name numbers in the statement program | |
6571 | are 1-based. */ | |
6572 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 6573 | char *dir = NULL; |
a738430d | 6574 | |
debd256d JB |
6575 | if (fe->dir_index) |
6576 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
6577 | |
6578 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
6579 | } |
6580 | ||
a738430d | 6581 | /* Decode the table. */ |
c5aa993b | 6582 | while (!end_sequence) |
c906108c SS |
6583 | { |
6584 | op_code = read_1_byte (abfd, line_ptr); | |
6585 | line_ptr += 1; | |
9aa1fe7e | 6586 | |
debd256d | 6587 | if (op_code >= lh->opcode_base) |
a738430d MK |
6588 | { |
6589 | /* Special operand. */ | |
debd256d JB |
6590 | adj_opcode = op_code - lh->opcode_base; |
6591 | address += (adj_opcode / lh->line_range) | |
6592 | * lh->minimum_instruction_length; | |
6593 | line += lh->line_base + (adj_opcode % lh->line_range); | |
aa495d11 | 6594 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6595 | if (!decode_for_pst_p) |
6596 | { | |
a738430d | 6597 | /* Append row to matrix using current values. */ |
aaa75496 JB |
6598 | record_line (current_subfile, line, |
6599 | check_cu_functions (address, cu)); | |
6600 | } | |
9aa1fe7e GK |
6601 | basic_block = 1; |
6602 | } | |
6603 | else switch (op_code) | |
c906108c SS |
6604 | { |
6605 | case DW_LNS_extended_op: | |
473b7be6 DJ |
6606 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6607 | line_ptr += bytes_read; | |
c906108c SS |
6608 | extended_op = read_1_byte (abfd, line_ptr); |
6609 | line_ptr += 1; | |
6610 | switch (extended_op) | |
6611 | { | |
6612 | case DW_LNE_end_sequence: | |
6613 | end_sequence = 1; | |
aa495d11 | 6614 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6615 | if (!decode_for_pst_p) |
6616 | record_line (current_subfile, 0, address); | |
c906108c SS |
6617 | break; |
6618 | case DW_LNE_set_address: | |
e7c27a73 | 6619 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
6620 | line_ptr += bytes_read; |
6621 | address += baseaddr; | |
c906108c SS |
6622 | break; |
6623 | case DW_LNE_define_file: | |
debd256d JB |
6624 | { |
6625 | char *cur_file; | |
6626 | unsigned int dir_index, mod_time, length; | |
6627 | ||
6628 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
6629 | line_ptr += bytes_read; | |
6630 | dir_index = | |
6631 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6632 | line_ptr += bytes_read; | |
6633 | mod_time = | |
6634 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6635 | line_ptr += bytes_read; | |
6636 | length = | |
6637 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6638 | line_ptr += bytes_read; | |
6639 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6640 | } | |
c906108c SS |
6641 | break; |
6642 | default: | |
4d3c2250 | 6643 | complaint (&symfile_complaints, |
e2e0b3e5 | 6644 | _("mangled .debug_line section")); |
debd256d | 6645 | return; |
c906108c SS |
6646 | } |
6647 | break; | |
6648 | case DW_LNS_copy: | |
aa495d11 | 6649 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6650 | if (!decode_for_pst_p) |
6651 | record_line (current_subfile, line, | |
6652 | check_cu_functions (address, cu)); | |
c906108c SS |
6653 | basic_block = 0; |
6654 | break; | |
6655 | case DW_LNS_advance_pc: | |
debd256d | 6656 | address += lh->minimum_instruction_length |
c906108c SS |
6657 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6658 | line_ptr += bytes_read; | |
6659 | break; | |
6660 | case DW_LNS_advance_line: | |
6661 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
6662 | line_ptr += bytes_read; | |
6663 | break; | |
6664 | case DW_LNS_set_file: | |
debd256d | 6665 | { |
a738430d MK |
6666 | /* The arrays lh->include_dirs and lh->file_names are |
6667 | 0-based, but the directory and file name numbers in | |
6668 | the statement program are 1-based. */ | |
debd256d | 6669 | struct file_entry *fe; |
4f1520fb | 6670 | char *dir = NULL; |
a738430d | 6671 | |
debd256d JB |
6672 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6673 | line_ptr += bytes_read; | |
6674 | fe = &lh->file_names[file - 1]; | |
6675 | if (fe->dir_index) | |
6676 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb | 6677 | |
aaa75496 | 6678 | if (!decode_for_pst_p) |
4f1520fb | 6679 | dwarf2_start_subfile (fe->name, dir, comp_dir); |
debd256d | 6680 | } |
c906108c SS |
6681 | break; |
6682 | case DW_LNS_set_column: | |
6683 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6684 | line_ptr += bytes_read; | |
6685 | break; | |
6686 | case DW_LNS_negate_stmt: | |
6687 | is_stmt = (!is_stmt); | |
6688 | break; | |
6689 | case DW_LNS_set_basic_block: | |
6690 | basic_block = 1; | |
6691 | break; | |
c2c6d25f JM |
6692 | /* Add to the address register of the state machine the |
6693 | address increment value corresponding to special opcode | |
a738430d MK |
6694 | 255. I.e., this value is scaled by the minimum |
6695 | instruction length since special opcode 255 would have | |
6696 | scaled the the increment. */ | |
c906108c | 6697 | case DW_LNS_const_add_pc: |
debd256d JB |
6698 | address += (lh->minimum_instruction_length |
6699 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
6700 | break; |
6701 | case DW_LNS_fixed_advance_pc: | |
6702 | address += read_2_bytes (abfd, line_ptr); | |
6703 | line_ptr += 2; | |
6704 | break; | |
9aa1fe7e | 6705 | default: |
a738430d MK |
6706 | { |
6707 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 6708 | int i; |
a738430d | 6709 | |
debd256d | 6710 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
6711 | { |
6712 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6713 | line_ptr += bytes_read; | |
6714 | } | |
6715 | } | |
c906108c SS |
6716 | } |
6717 | } | |
6718 | } | |
aaa75496 JB |
6719 | |
6720 | if (decode_for_pst_p) | |
6721 | { | |
6722 | int file_index; | |
6723 | ||
6724 | /* Now that we're done scanning the Line Header Program, we can | |
6725 | create the psymtab of each included file. */ | |
6726 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
6727 | if (lh->file_names[file_index].included_p == 1) | |
6728 | { | |
5b5464ad JB |
6729 | const struct file_entry fe = lh->file_names [file_index]; |
6730 | char *include_name = fe.name; | |
6731 | char *dir_name = NULL; | |
6732 | char *pst_filename = pst->filename; | |
6733 | ||
6734 | if (fe.dir_index) | |
6735 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
6736 | ||
6737 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
6738 | { | |
1754f103 MK |
6739 | include_name = concat (dir_name, SLASH_STRING, |
6740 | include_name, (char *)NULL); | |
5b5464ad JB |
6741 | make_cleanup (xfree, include_name); |
6742 | } | |
6743 | ||
6744 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
6745 | { | |
1754f103 MK |
6746 | pst_filename = concat (pst->dirname, SLASH_STRING, |
6747 | pst_filename, (char *)NULL); | |
5b5464ad JB |
6748 | make_cleanup (xfree, pst_filename); |
6749 | } | |
6750 | ||
6751 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
6752 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
6753 | } | |
6754 | } | |
c906108c SS |
6755 | } |
6756 | ||
6757 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
6758 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
6759 | or NULL if not known. COMP_DIR is the compilation directory for the |
6760 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
6761 | This routine tries to keep line numbers from identical absolute and |
6762 | relative file names in a common subfile. | |
6763 | ||
6764 | Using the `list' example from the GDB testsuite, which resides in | |
6765 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
6766 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
6767 | ||
c5aa993b JM |
6768 | DW_AT_name: /srcdir/list0.c |
6769 | DW_AT_comp_dir: /compdir | |
357e46e7 | 6770 | files.files[0].name: list0.h |
c5aa993b | 6771 | files.files[0].dir: /srcdir |
357e46e7 | 6772 | files.files[1].name: list0.c |
c5aa993b | 6773 | files.files[1].dir: /srcdir |
c906108c SS |
6774 | |
6775 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
6776 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
6777 | start_subfile will ensure that this happens provided that we pass the | |
6778 | concatenation of files.files[1].dir and files.files[1].name as the | |
6779 | subfile's name. */ | |
c906108c SS |
6780 | |
6781 | static void | |
4f1520fb | 6782 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 6783 | { |
4f1520fb FR |
6784 | char *fullname; |
6785 | ||
6786 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
6787 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
6788 | second argument to start_subfile. To be consistent, we do the | |
6789 | same here. In order not to lose the line information directory, | |
6790 | we concatenate it to the filename when it makes sense. | |
6791 | Note that the Dwarf3 standard says (speaking of filenames in line | |
6792 | information): ``The directory index is ignored for file names | |
6793 | that represent full path names''. Thus ignoring dirname in the | |
6794 | `else' branch below isn't an issue. */ | |
c906108c | 6795 | |
d5166ae1 | 6796 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
6797 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
6798 | else | |
6799 | fullname = filename; | |
c906108c | 6800 | |
4f1520fb FR |
6801 | start_subfile (fullname, comp_dir); |
6802 | ||
6803 | if (fullname != filename) | |
6804 | xfree (fullname); | |
c906108c SS |
6805 | } |
6806 | ||
4c2df51b DJ |
6807 | static void |
6808 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 6809 | struct dwarf2_cu *cu) |
4c2df51b | 6810 | { |
e7c27a73 DJ |
6811 | struct objfile *objfile = cu->objfile; |
6812 | struct comp_unit_head *cu_header = &cu->header; | |
6813 | ||
4c2df51b DJ |
6814 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
6815 | code here to turn a symbol with DW_AT_external and a | |
6816 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
6817 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
6818 | with some versions of binutils) where shared libraries could have | |
6819 | relocations against symbols in their debug information - the | |
6820 | minimal symbol would have the right address, but the debug info | |
6821 | would not. It's no longer necessary, because we will explicitly | |
6822 | apply relocations when we read in the debug information now. */ | |
6823 | ||
6824 | /* A DW_AT_location attribute with no contents indicates that a | |
6825 | variable has been optimized away. */ | |
6826 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
6827 | { | |
6828 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
6829 | return; | |
6830 | } | |
6831 | ||
6832 | /* Handle one degenerate form of location expression specially, to | |
6833 | preserve GDB's previous behavior when section offsets are | |
6834 | specified. If this is just a DW_OP_addr then mark this symbol | |
6835 | as LOC_STATIC. */ | |
6836 | ||
6837 | if (attr_form_is_block (attr) | |
6838 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
6839 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
6840 | { | |
891d2f0b | 6841 | unsigned int dummy; |
4c2df51b DJ |
6842 | |
6843 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 6844 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
6845 | fixup_symbol_section (sym, objfile); |
6846 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
6847 | SYMBOL_SECTION (sym)); | |
6848 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
6849 | return; | |
6850 | } | |
6851 | ||
6852 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
6853 | expression evaluator, and use LOC_COMPUTED only when necessary | |
6854 | (i.e. when the value of a register or memory location is | |
6855 | referenced, or a thread-local block, etc.). Then again, it might | |
6856 | not be worthwhile. I'm assuming that it isn't unless performance | |
6857 | or memory numbers show me otherwise. */ | |
6858 | ||
e7c27a73 | 6859 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
6860 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
6861 | } | |
6862 | ||
c906108c SS |
6863 | /* Given a pointer to a DWARF information entry, figure out if we need |
6864 | to make a symbol table entry for it, and if so, create a new entry | |
6865 | and return a pointer to it. | |
6866 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 6867 | used the passed type. */ |
c906108c SS |
6868 | |
6869 | static struct symbol * | |
e7c27a73 | 6870 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 6871 | { |
e7c27a73 | 6872 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6873 | struct symbol *sym = NULL; |
6874 | char *name; | |
6875 | struct attribute *attr = NULL; | |
6876 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
6877 | CORE_ADDR baseaddr; |
6878 | ||
6879 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6880 | |
5c4e30ca | 6881 | if (die->tag != DW_TAG_namespace) |
e142c38c | 6882 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
6883 | else |
6884 | name = TYPE_NAME (type); | |
6885 | ||
c906108c SS |
6886 | if (name) |
6887 | { | |
4a146b47 | 6888 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
6889 | sizeof (struct symbol)); |
6890 | OBJSTAT (objfile, n_syms++); | |
6891 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
6892 | |
6893 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 6894 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 6895 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
6896 | |
6897 | /* Default assumptions. | |
c5aa993b | 6898 | Use the passed type or decode it from the die. */ |
176620f1 | 6899 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 6900 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
6901 | if (type != NULL) |
6902 | SYMBOL_TYPE (sym) = type; | |
6903 | else | |
e7c27a73 | 6904 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 6905 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
6906 | if (attr) |
6907 | { | |
6908 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
6909 | } | |
c906108c SS |
6910 | switch (die->tag) |
6911 | { | |
6912 | case DW_TAG_label: | |
e142c38c | 6913 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
6914 | if (attr) |
6915 | { | |
6916 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
6917 | } | |
6918 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
6919 | break; | |
6920 | case DW_TAG_subprogram: | |
6921 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
6922 | finish_block. */ | |
6923 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 6924 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
6925 | if (attr2 && (DW_UNSND (attr2) != 0)) |
6926 | { | |
6927 | add_symbol_to_list (sym, &global_symbols); | |
6928 | } | |
6929 | else | |
6930 | { | |
e142c38c | 6931 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6932 | } |
6933 | break; | |
6934 | case DW_TAG_variable: | |
6935 | /* Compilation with minimal debug info may result in variables | |
6936 | with missing type entries. Change the misleading `void' type | |
6937 | to something sensible. */ | |
6938 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
6939 | SYMBOL_TYPE (sym) = init_type (TYPE_CODE_INT, | |
6940 | TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
6941 | "<variable, no debug info>", | |
6942 | objfile); | |
e142c38c | 6943 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
6944 | if (attr) |
6945 | { | |
e7c27a73 | 6946 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 6947 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
6948 | if (attr2 && (DW_UNSND (attr2) != 0)) |
6949 | add_symbol_to_list (sym, &global_symbols); | |
6950 | else | |
e142c38c | 6951 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6952 | break; |
6953 | } | |
e142c38c | 6954 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
6955 | if (attr) |
6956 | { | |
e7c27a73 | 6957 | var_decode_location (attr, sym, cu); |
e142c38c | 6958 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 6959 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 6960 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 6961 | else |
e142c38c | 6962 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6963 | } |
6964 | else | |
6965 | { | |
6966 | /* We do not know the address of this symbol. | |
c5aa993b JM |
6967 | If it is an external symbol and we have type information |
6968 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
6969 | The address of the variable will then be determined from | |
6970 | the minimal symbol table whenever the variable is | |
6971 | referenced. */ | |
e142c38c | 6972 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 6973 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 6974 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
6975 | { |
6976 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
6977 | add_symbol_to_list (sym, &global_symbols); | |
6978 | } | |
6979 | } | |
6980 | break; | |
6981 | case DW_TAG_formal_parameter: | |
e142c38c | 6982 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
6983 | if (attr) |
6984 | { | |
e7c27a73 | 6985 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
6986 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
6987 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
6988 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 6989 | } |
e142c38c | 6990 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
6991 | if (attr) |
6992 | { | |
e7c27a73 | 6993 | dwarf2_const_value (attr, sym, cu); |
c906108c | 6994 | } |
e142c38c | 6995 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6996 | break; |
6997 | case DW_TAG_unspecified_parameters: | |
6998 | /* From varargs functions; gdb doesn't seem to have any | |
6999 | interest in this information, so just ignore it for now. | |
7000 | (FIXME?) */ | |
7001 | break; | |
7002 | case DW_TAG_class_type: | |
7003 | case DW_TAG_structure_type: | |
7004 | case DW_TAG_union_type: | |
72019c9c | 7005 | case DW_TAG_set_type: |
c906108c SS |
7006 | case DW_TAG_enumeration_type: |
7007 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 7008 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 7009 | |
63d06c5c DC |
7010 | /* Make sure that the symbol includes appropriate enclosing |
7011 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 7012 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
7013 | the type. */ |
7014 | ||
987504bb JJ |
7015 | if (cu->language == language_cplus |
7016 | || cu->language == language_java) | |
c906108c | 7017 | { |
63d06c5c DC |
7018 | struct type *type = SYMBOL_TYPE (sym); |
7019 | ||
7020 | if (TYPE_TAG_NAME (type) != NULL) | |
7021 | { | |
7022 | /* FIXME: carlton/2003-11-10: Should this use | |
7023 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
7024 | arises further down in this function.) */ |
7025 | /* The type's name is already allocated along with | |
7026 | this objfile, so we don't need to duplicate it | |
7027 | for the symbol. */ | |
7028 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 7029 | } |
c906108c | 7030 | } |
63d06c5c DC |
7031 | |
7032 | { | |
987504bb | 7033 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
7034 | really ever be static objects: otherwise, if you try |
7035 | to, say, break of a class's method and you're in a file | |
7036 | which doesn't mention that class, it won't work unless | |
7037 | the check for all static symbols in lookup_symbol_aux | |
7038 | saves you. See the OtherFileClass tests in | |
7039 | gdb.c++/namespace.exp. */ | |
7040 | ||
7041 | struct pending **list_to_add; | |
7042 | ||
e142c38c | 7043 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7044 | && (cu->language == language_cplus |
7045 | || cu->language == language_java) | |
e142c38c | 7046 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7047 | |
7048 | add_symbol_to_list (sym, list_to_add); | |
7049 | ||
7050 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb JJ |
7051 | defines a typedef for "foo". A Java class declaration also |
7052 | defines a typedef for the class. Synthesize a typedef symbol | |
7053 | so that "ptype foo" works as expected. */ | |
7054 | if (cu->language == language_cplus | |
7055 | || cu->language == language_java) | |
63d06c5c DC |
7056 | { |
7057 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 7058 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
7059 | sizeof (struct symbol)); |
7060 | *typedef_sym = *sym; | |
7061 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
d8151005 DJ |
7062 | /* The symbol's name is already allocated along with |
7063 | this objfile, so we don't need to duplicate it for | |
7064 | the type. */ | |
63d06c5c | 7065 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 7066 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
7067 | add_symbol_to_list (typedef_sym, list_to_add); |
7068 | } | |
7069 | } | |
c906108c SS |
7070 | break; |
7071 | case DW_TAG_typedef: | |
63d06c5c DC |
7072 | if (processing_has_namespace_info |
7073 | && processing_current_prefix[0] != '\0') | |
7074 | { | |
987504bb JJ |
7075 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7076 | processing_current_prefix, | |
7077 | name, cu); | |
63d06c5c DC |
7078 | } |
7079 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7080 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 7081 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 7082 | break; |
c906108c | 7083 | case DW_TAG_base_type: |
a02abb62 | 7084 | case DW_TAG_subrange_type: |
c906108c | 7085 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 7086 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 7087 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7088 | break; |
7089 | case DW_TAG_enumerator: | |
63d06c5c DC |
7090 | if (processing_has_namespace_info |
7091 | && processing_current_prefix[0] != '\0') | |
7092 | { | |
987504bb JJ |
7093 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7094 | processing_current_prefix, | |
7095 | name, cu); | |
63d06c5c | 7096 | } |
e142c38c | 7097 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7098 | if (attr) |
7099 | { | |
e7c27a73 | 7100 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7101 | } |
63d06c5c DC |
7102 | { |
7103 | /* NOTE: carlton/2003-11-10: See comment above in the | |
7104 | DW_TAG_class_type, etc. block. */ | |
7105 | ||
7106 | struct pending **list_to_add; | |
7107 | ||
e142c38c | 7108 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7109 | && (cu->language == language_cplus |
7110 | || cu->language == language_java) | |
e142c38c | 7111 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7112 | |
7113 | add_symbol_to_list (sym, list_to_add); | |
7114 | } | |
c906108c | 7115 | break; |
5c4e30ca DC |
7116 | case DW_TAG_namespace: |
7117 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7118 | add_symbol_to_list (sym, &global_symbols); | |
7119 | break; | |
c906108c SS |
7120 | default: |
7121 | /* Not a tag we recognize. Hopefully we aren't processing | |
7122 | trash data, but since we must specifically ignore things | |
7123 | we don't recognize, there is nothing else we should do at | |
7124 | this point. */ | |
e2e0b3e5 | 7125 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 7126 | dwarf_tag_name (die->tag)); |
c906108c SS |
7127 | break; |
7128 | } | |
7129 | } | |
7130 | return (sym); | |
7131 | } | |
7132 | ||
7133 | /* Copy constant value from an attribute to a symbol. */ | |
7134 | ||
7135 | static void | |
107d2387 | 7136 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 7137 | struct dwarf2_cu *cu) |
c906108c | 7138 | { |
e7c27a73 DJ |
7139 | struct objfile *objfile = cu->objfile; |
7140 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7141 | struct dwarf_block *blk; |
7142 | ||
7143 | switch (attr->form) | |
7144 | { | |
7145 | case DW_FORM_addr: | |
107d2387 | 7146 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 7147 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7148 | cu_header->addr_size, |
7149 | TYPE_LENGTH (SYMBOL_TYPE | |
7150 | (sym))); | |
4e38b386 | 7151 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7152 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
7153 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
7154 | it's body - store_unsigned_integer. */ | |
7155 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
7156 | DW_ADDR (attr)); | |
c906108c SS |
7157 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
7158 | break; | |
7159 | case DW_FORM_block1: | |
7160 | case DW_FORM_block2: | |
7161 | case DW_FORM_block4: | |
7162 | case DW_FORM_block: | |
7163 | blk = DW_BLOCK (attr); | |
7164 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 7165 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7166 | blk->size, |
7167 | TYPE_LENGTH (SYMBOL_TYPE | |
7168 | (sym))); | |
4e38b386 | 7169 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7170 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
7171 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
7172 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7173 | break; | |
2df3850c JM |
7174 | |
7175 | /* The DW_AT_const_value attributes are supposed to carry the | |
7176 | symbol's value "represented as it would be on the target | |
7177 | architecture." By the time we get here, it's already been | |
7178 | converted to host endianness, so we just need to sign- or | |
7179 | zero-extend it as appropriate. */ | |
7180 | case DW_FORM_data1: | |
7181 | dwarf2_const_value_data (attr, sym, 8); | |
7182 | break; | |
c906108c | 7183 | case DW_FORM_data2: |
2df3850c JM |
7184 | dwarf2_const_value_data (attr, sym, 16); |
7185 | break; | |
c906108c | 7186 | case DW_FORM_data4: |
2df3850c JM |
7187 | dwarf2_const_value_data (attr, sym, 32); |
7188 | break; | |
c906108c | 7189 | case DW_FORM_data8: |
2df3850c JM |
7190 | dwarf2_const_value_data (attr, sym, 64); |
7191 | break; | |
7192 | ||
c906108c | 7193 | case DW_FORM_sdata: |
2df3850c JM |
7194 | SYMBOL_VALUE (sym) = DW_SND (attr); |
7195 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7196 | break; | |
7197 | ||
c906108c SS |
7198 | case DW_FORM_udata: |
7199 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
7200 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7201 | break; | |
2df3850c | 7202 | |
c906108c | 7203 | default: |
4d3c2250 | 7204 | complaint (&symfile_complaints, |
e2e0b3e5 | 7205 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 7206 | dwarf_form_name (attr->form)); |
c906108c SS |
7207 | SYMBOL_VALUE (sym) = 0; |
7208 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7209 | break; | |
7210 | } | |
7211 | } | |
7212 | ||
2df3850c JM |
7213 | |
7214 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
7215 | or zero-extend it as appropriate for the symbol's type. */ | |
7216 | static void | |
7217 | dwarf2_const_value_data (struct attribute *attr, | |
7218 | struct symbol *sym, | |
7219 | int bits) | |
7220 | { | |
7221 | LONGEST l = DW_UNSND (attr); | |
7222 | ||
7223 | if (bits < sizeof (l) * 8) | |
7224 | { | |
7225 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
7226 | l &= ((LONGEST) 1 << bits) - 1; | |
7227 | else | |
bf9198f1 | 7228 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
7229 | } |
7230 | ||
7231 | SYMBOL_VALUE (sym) = l; | |
7232 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7233 | } | |
7234 | ||
7235 | ||
c906108c SS |
7236 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
7237 | ||
7238 | static struct type * | |
e7c27a73 | 7239 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7240 | { |
7241 | struct type *type; | |
7242 | struct attribute *type_attr; | |
7243 | struct die_info *type_die; | |
c906108c | 7244 | |
e142c38c | 7245 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
7246 | if (!type_attr) |
7247 | { | |
7248 | /* A missing DW_AT_type represents a void type. */ | |
e142c38c | 7249 | return dwarf2_fundamental_type (cu->objfile, FT_VOID, cu); |
c906108c SS |
7250 | } |
7251 | else | |
10b3939b DJ |
7252 | type_die = follow_die_ref (die, type_attr, cu); |
7253 | ||
e7c27a73 | 7254 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7255 | if (!type) |
7256 | { | |
7257 | dump_die (type_die); | |
8a3fe4f8 | 7258 | error (_("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]"), |
e7c27a73 | 7259 | cu->objfile->name); |
c906108c SS |
7260 | } |
7261 | return type; | |
7262 | } | |
7263 | ||
7264 | /* Return the containing type of the die in question using its | |
7265 | DW_AT_containing_type attribute. */ | |
7266 | ||
7267 | static struct type * | |
e7c27a73 | 7268 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7269 | { |
7270 | struct type *type = NULL; | |
7271 | struct attribute *type_attr; | |
7272 | struct die_info *type_die = NULL; | |
c906108c | 7273 | |
e142c38c | 7274 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
7275 | if (type_attr) |
7276 | { | |
10b3939b | 7277 | type_die = follow_die_ref (die, type_attr, cu); |
e7c27a73 | 7278 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7279 | } |
7280 | if (!type) | |
7281 | { | |
7282 | if (type_die) | |
7283 | dump_die (type_die); | |
8a3fe4f8 | 7284 | error (_("Dwarf Error: Problem turning containing type into gdb type [in module %s]"), |
e7c27a73 | 7285 | cu->objfile->name); |
c906108c SS |
7286 | } |
7287 | return type; | |
7288 | } | |
7289 | ||
c906108c | 7290 | static struct type * |
e7c27a73 | 7291 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7292 | { |
7293 | if (die->type) | |
7294 | { | |
7295 | return die->type; | |
7296 | } | |
7297 | else | |
7298 | { | |
e7c27a73 | 7299 | read_type_die (die, cu); |
c906108c SS |
7300 | if (!die->type) |
7301 | { | |
7302 | dump_die (die); | |
8a3fe4f8 | 7303 | error (_("Dwarf Error: Cannot find type of die [in module %s]"), |
e7c27a73 | 7304 | cu->objfile->name); |
c906108c SS |
7305 | } |
7306 | return die->type; | |
7307 | } | |
7308 | } | |
7309 | ||
7310 | static void | |
e7c27a73 | 7311 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7312 | { |
e142c38c | 7313 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
7314 | const char *old_prefix = processing_current_prefix; |
7315 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
7316 | processing_current_prefix = prefix; | |
7317 | ||
c906108c SS |
7318 | switch (die->tag) |
7319 | { | |
7320 | case DW_TAG_class_type: | |
7321 | case DW_TAG_structure_type: | |
7322 | case DW_TAG_union_type: | |
134d01f1 | 7323 | read_structure_type (die, cu); |
c906108c SS |
7324 | break; |
7325 | case DW_TAG_enumeration_type: | |
134d01f1 | 7326 | read_enumeration_type (die, cu); |
c906108c SS |
7327 | break; |
7328 | case DW_TAG_subprogram: | |
7329 | case DW_TAG_subroutine_type: | |
e7c27a73 | 7330 | read_subroutine_type (die, cu); |
c906108c SS |
7331 | break; |
7332 | case DW_TAG_array_type: | |
e7c27a73 | 7333 | read_array_type (die, cu); |
c906108c | 7334 | break; |
72019c9c GM |
7335 | case DW_TAG_set_type: |
7336 | read_set_type (die, cu); | |
7337 | break; | |
c906108c | 7338 | case DW_TAG_pointer_type: |
e7c27a73 | 7339 | read_tag_pointer_type (die, cu); |
c906108c SS |
7340 | break; |
7341 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 7342 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
7343 | break; |
7344 | case DW_TAG_reference_type: | |
e7c27a73 | 7345 | read_tag_reference_type (die, cu); |
c906108c SS |
7346 | break; |
7347 | case DW_TAG_const_type: | |
e7c27a73 | 7348 | read_tag_const_type (die, cu); |
c906108c SS |
7349 | break; |
7350 | case DW_TAG_volatile_type: | |
e7c27a73 | 7351 | read_tag_volatile_type (die, cu); |
c906108c SS |
7352 | break; |
7353 | case DW_TAG_string_type: | |
e7c27a73 | 7354 | read_tag_string_type (die, cu); |
c906108c SS |
7355 | break; |
7356 | case DW_TAG_typedef: | |
e7c27a73 | 7357 | read_typedef (die, cu); |
c906108c | 7358 | break; |
a02abb62 JB |
7359 | case DW_TAG_subrange_type: |
7360 | read_subrange_type (die, cu); | |
7361 | break; | |
c906108c | 7362 | case DW_TAG_base_type: |
e7c27a73 | 7363 | read_base_type (die, cu); |
c906108c | 7364 | break; |
81a17f79 JB |
7365 | case DW_TAG_unspecified_type: |
7366 | read_unspecified_type (die, cu); | |
7367 | break; | |
c906108c | 7368 | default: |
a1f5b845 | 7369 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 7370 | dwarf_tag_name (die->tag)); |
c906108c SS |
7371 | break; |
7372 | } | |
63d06c5c DC |
7373 | |
7374 | processing_current_prefix = old_prefix; | |
7375 | do_cleanups (back_to); | |
7376 | } | |
7377 | ||
fdde2d81 DC |
7378 | /* Return the name of the namespace/class that DIE is defined within, |
7379 | or "" if we can't tell. The caller should xfree the result. */ | |
7380 | ||
7381 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
7382 | therein) for an example of how to use this function to deal with | |
7383 | DW_AT_specification. */ | |
7384 | ||
7385 | static char * | |
e142c38c | 7386 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
7387 | { |
7388 | struct die_info *parent; | |
7389 | ||
987504bb JJ |
7390 | if (cu->language != language_cplus |
7391 | && cu->language != language_java) | |
63d06c5c DC |
7392 | return NULL; |
7393 | ||
7394 | parent = die->parent; | |
7395 | ||
7396 | if (parent == NULL) | |
7397 | { | |
8176b9b8 | 7398 | return xstrdup (""); |
63d06c5c DC |
7399 | } |
7400 | else | |
7401 | { | |
63d06c5c DC |
7402 | switch (parent->tag) { |
7403 | case DW_TAG_namespace: | |
7404 | { | |
8176b9b8 DC |
7405 | /* FIXME: carlton/2004-03-05: Should I follow extension dies |
7406 | before doing this check? */ | |
7407 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) | |
7408 | { | |
7409 | return xstrdup (TYPE_TAG_NAME (parent->type)); | |
7410 | } | |
7411 | else | |
7412 | { | |
7413 | int dummy; | |
7414 | char *parent_prefix = determine_prefix (parent, cu); | |
987504bb | 7415 | char *retval = typename_concat (NULL, parent_prefix, |
8176b9b8 | 7416 | namespace_name (parent, &dummy, |
987504bb JJ |
7417 | cu), |
7418 | cu); | |
8176b9b8 DC |
7419 | xfree (parent_prefix); |
7420 | return retval; | |
7421 | } | |
63d06c5c DC |
7422 | } |
7423 | break; | |
7424 | case DW_TAG_class_type: | |
7425 | case DW_TAG_structure_type: | |
7426 | { | |
8176b9b8 | 7427 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) |
63d06c5c | 7428 | { |
8176b9b8 | 7429 | return xstrdup (TYPE_TAG_NAME (parent->type)); |
63d06c5c DC |
7430 | } |
7431 | else | |
8176b9b8 DC |
7432 | { |
7433 | const char *old_prefix = processing_current_prefix; | |
7434 | char *new_prefix = determine_prefix (parent, cu); | |
7435 | char *retval; | |
7436 | ||
7437 | processing_current_prefix = new_prefix; | |
7438 | retval = determine_class_name (parent, cu); | |
7439 | processing_current_prefix = old_prefix; | |
7440 | ||
7441 | xfree (new_prefix); | |
7442 | return retval; | |
7443 | } | |
63d06c5c | 7444 | } |
63d06c5c | 7445 | default: |
8176b9b8 | 7446 | return determine_prefix (parent, cu); |
63d06c5c | 7447 | } |
63d06c5c DC |
7448 | } |
7449 | } | |
7450 | ||
987504bb JJ |
7451 | /* Return a newly-allocated string formed by concatenating PREFIX and |
7452 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
7453 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
7454 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
7455 | is used to determine the language and hence, the appropriate separator. */ | |
7456 | ||
7457 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
7458 | |
7459 | static char * | |
987504bb JJ |
7460 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
7461 | struct dwarf2_cu *cu) | |
63d06c5c | 7462 | { |
987504bb | 7463 | char *sep; |
63d06c5c | 7464 | |
987504bb JJ |
7465 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
7466 | sep = ""; | |
7467 | else if (cu->language == language_java) | |
7468 | sep = "."; | |
7469 | else | |
7470 | sep = "::"; | |
63d06c5c | 7471 | |
987504bb JJ |
7472 | if (obs == NULL) |
7473 | { | |
7474 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
7475 | retval[0] = '\0'; | |
7476 | ||
7477 | if (prefix) | |
7478 | { | |
7479 | strcpy (retval, prefix); | |
7480 | strcat (retval, sep); | |
7481 | } | |
7482 | if (suffix) | |
7483 | strcat (retval, suffix); | |
7484 | ||
63d06c5c DC |
7485 | return retval; |
7486 | } | |
987504bb JJ |
7487 | else |
7488 | { | |
7489 | /* We have an obstack. */ | |
7490 | return obconcat (obs, prefix, sep, suffix); | |
7491 | } | |
63d06c5c DC |
7492 | } |
7493 | ||
c906108c | 7494 | static struct type * |
e7c27a73 | 7495 | dwarf_base_type (int encoding, int size, struct dwarf2_cu *cu) |
c906108c | 7496 | { |
e7c27a73 DJ |
7497 | struct objfile *objfile = cu->objfile; |
7498 | ||
c906108c SS |
7499 | /* FIXME - this should not produce a new (struct type *) |
7500 | every time. It should cache base types. */ | |
7501 | struct type *type; | |
7502 | switch (encoding) | |
7503 | { | |
7504 | case DW_ATE_address: | |
e142c38c | 7505 | type = dwarf2_fundamental_type (objfile, FT_VOID, cu); |
c906108c SS |
7506 | return type; |
7507 | case DW_ATE_boolean: | |
e142c38c | 7508 | type = dwarf2_fundamental_type (objfile, FT_BOOLEAN, cu); |
c906108c SS |
7509 | return type; |
7510 | case DW_ATE_complex_float: | |
7511 | if (size == 16) | |
7512 | { | |
e142c38c | 7513 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_COMPLEX, cu); |
c906108c SS |
7514 | } |
7515 | else | |
7516 | { | |
e142c38c | 7517 | type = dwarf2_fundamental_type (objfile, FT_COMPLEX, cu); |
c906108c SS |
7518 | } |
7519 | return type; | |
7520 | case DW_ATE_float: | |
7521 | if (size == 8) | |
7522 | { | |
e142c38c | 7523 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
c906108c SS |
7524 | } |
7525 | else | |
7526 | { | |
e142c38c | 7527 | type = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
c906108c SS |
7528 | } |
7529 | return type; | |
7530 | case DW_ATE_signed: | |
7531 | switch (size) | |
7532 | { | |
7533 | case 1: | |
e142c38c | 7534 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
7535 | break; |
7536 | case 2: | |
e142c38c | 7537 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_SHORT, cu); |
c906108c SS |
7538 | break; |
7539 | default: | |
7540 | case 4: | |
e142c38c | 7541 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
7542 | break; |
7543 | } | |
7544 | return type; | |
7545 | case DW_ATE_signed_char: | |
e142c38c | 7546 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
7547 | return type; |
7548 | case DW_ATE_unsigned: | |
7549 | switch (size) | |
7550 | { | |
7551 | case 1: | |
e142c38c | 7552 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
7553 | break; |
7554 | case 2: | |
e142c38c | 7555 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_SHORT, cu); |
c906108c SS |
7556 | break; |
7557 | default: | |
7558 | case 4: | |
e142c38c | 7559 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_INTEGER, cu); |
c906108c SS |
7560 | break; |
7561 | } | |
7562 | return type; | |
7563 | case DW_ATE_unsigned_char: | |
e142c38c | 7564 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
7565 | return type; |
7566 | default: | |
e142c38c | 7567 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
7568 | return type; |
7569 | } | |
7570 | } | |
7571 | ||
7572 | #if 0 | |
7573 | struct die_info * | |
fba45db2 | 7574 | copy_die (struct die_info *old_die) |
c906108c SS |
7575 | { |
7576 | struct die_info *new_die; | |
7577 | int i, num_attrs; | |
7578 | ||
7579 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
7580 | memset (new_die, 0, sizeof (struct die_info)); | |
7581 | ||
7582 | new_die->tag = old_die->tag; | |
7583 | new_die->has_children = old_die->has_children; | |
7584 | new_die->abbrev = old_die->abbrev; | |
7585 | new_die->offset = old_die->offset; | |
7586 | new_die->type = NULL; | |
7587 | ||
7588 | num_attrs = old_die->num_attrs; | |
7589 | new_die->num_attrs = num_attrs; | |
7590 | new_die->attrs = (struct attribute *) | |
7591 | xmalloc (num_attrs * sizeof (struct attribute)); | |
7592 | ||
7593 | for (i = 0; i < old_die->num_attrs; ++i) | |
7594 | { | |
7595 | new_die->attrs[i].name = old_die->attrs[i].name; | |
7596 | new_die->attrs[i].form = old_die->attrs[i].form; | |
7597 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
7598 | } | |
7599 | ||
7600 | new_die->next = NULL; | |
7601 | return new_die; | |
7602 | } | |
7603 | #endif | |
7604 | ||
7605 | /* Return sibling of die, NULL if no sibling. */ | |
7606 | ||
f9aca02d | 7607 | static struct die_info * |
fba45db2 | 7608 | sibling_die (struct die_info *die) |
c906108c | 7609 | { |
639d11d3 | 7610 | return die->sibling; |
c906108c SS |
7611 | } |
7612 | ||
7613 | /* Get linkage name of a die, return NULL if not found. */ | |
7614 | ||
7615 | static char * | |
e142c38c | 7616 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7617 | { |
7618 | struct attribute *attr; | |
7619 | ||
e142c38c | 7620 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
7621 | if (attr && DW_STRING (attr)) |
7622 | return DW_STRING (attr); | |
e142c38c | 7623 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
7624 | if (attr && DW_STRING (attr)) |
7625 | return DW_STRING (attr); | |
7626 | return NULL; | |
7627 | } | |
7628 | ||
9219021c DC |
7629 | /* Get name of a die, return NULL if not found. */ |
7630 | ||
7631 | static char * | |
e142c38c | 7632 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7633 | { |
7634 | struct attribute *attr; | |
7635 | ||
e142c38c | 7636 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
7637 | if (attr && DW_STRING (attr)) |
7638 | return DW_STRING (attr); | |
7639 | return NULL; | |
7640 | } | |
7641 | ||
7642 | /* Return the die that this die in an extension of, or NULL if there | |
7643 | is none. */ | |
7644 | ||
7645 | static struct die_info * | |
e142c38c | 7646 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7647 | { |
7648 | struct attribute *attr; | |
9219021c | 7649 | |
e142c38c | 7650 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
7651 | if (attr == NULL) |
7652 | return NULL; | |
7653 | ||
10b3939b | 7654 | return follow_die_ref (die, attr, cu); |
9219021c DC |
7655 | } |
7656 | ||
c906108c SS |
7657 | /* Convert a DIE tag into its string name. */ |
7658 | ||
7659 | static char * | |
aa1ee363 | 7660 | dwarf_tag_name (unsigned tag) |
c906108c SS |
7661 | { |
7662 | switch (tag) | |
7663 | { | |
7664 | case DW_TAG_padding: | |
7665 | return "DW_TAG_padding"; | |
7666 | case DW_TAG_array_type: | |
7667 | return "DW_TAG_array_type"; | |
7668 | case DW_TAG_class_type: | |
7669 | return "DW_TAG_class_type"; | |
7670 | case DW_TAG_entry_point: | |
7671 | return "DW_TAG_entry_point"; | |
7672 | case DW_TAG_enumeration_type: | |
7673 | return "DW_TAG_enumeration_type"; | |
7674 | case DW_TAG_formal_parameter: | |
7675 | return "DW_TAG_formal_parameter"; | |
7676 | case DW_TAG_imported_declaration: | |
7677 | return "DW_TAG_imported_declaration"; | |
7678 | case DW_TAG_label: | |
7679 | return "DW_TAG_label"; | |
7680 | case DW_TAG_lexical_block: | |
7681 | return "DW_TAG_lexical_block"; | |
7682 | case DW_TAG_member: | |
7683 | return "DW_TAG_member"; | |
7684 | case DW_TAG_pointer_type: | |
7685 | return "DW_TAG_pointer_type"; | |
7686 | case DW_TAG_reference_type: | |
7687 | return "DW_TAG_reference_type"; | |
7688 | case DW_TAG_compile_unit: | |
7689 | return "DW_TAG_compile_unit"; | |
7690 | case DW_TAG_string_type: | |
7691 | return "DW_TAG_string_type"; | |
7692 | case DW_TAG_structure_type: | |
7693 | return "DW_TAG_structure_type"; | |
7694 | case DW_TAG_subroutine_type: | |
7695 | return "DW_TAG_subroutine_type"; | |
7696 | case DW_TAG_typedef: | |
7697 | return "DW_TAG_typedef"; | |
7698 | case DW_TAG_union_type: | |
7699 | return "DW_TAG_union_type"; | |
7700 | case DW_TAG_unspecified_parameters: | |
7701 | return "DW_TAG_unspecified_parameters"; | |
7702 | case DW_TAG_variant: | |
7703 | return "DW_TAG_variant"; | |
7704 | case DW_TAG_common_block: | |
7705 | return "DW_TAG_common_block"; | |
7706 | case DW_TAG_common_inclusion: | |
7707 | return "DW_TAG_common_inclusion"; | |
7708 | case DW_TAG_inheritance: | |
7709 | return "DW_TAG_inheritance"; | |
7710 | case DW_TAG_inlined_subroutine: | |
7711 | return "DW_TAG_inlined_subroutine"; | |
7712 | case DW_TAG_module: | |
7713 | return "DW_TAG_module"; | |
7714 | case DW_TAG_ptr_to_member_type: | |
7715 | return "DW_TAG_ptr_to_member_type"; | |
7716 | case DW_TAG_set_type: | |
7717 | return "DW_TAG_set_type"; | |
7718 | case DW_TAG_subrange_type: | |
7719 | return "DW_TAG_subrange_type"; | |
7720 | case DW_TAG_with_stmt: | |
7721 | return "DW_TAG_with_stmt"; | |
7722 | case DW_TAG_access_declaration: | |
7723 | return "DW_TAG_access_declaration"; | |
7724 | case DW_TAG_base_type: | |
7725 | return "DW_TAG_base_type"; | |
7726 | case DW_TAG_catch_block: | |
7727 | return "DW_TAG_catch_block"; | |
7728 | case DW_TAG_const_type: | |
7729 | return "DW_TAG_const_type"; | |
7730 | case DW_TAG_constant: | |
7731 | return "DW_TAG_constant"; | |
7732 | case DW_TAG_enumerator: | |
7733 | return "DW_TAG_enumerator"; | |
7734 | case DW_TAG_file_type: | |
7735 | return "DW_TAG_file_type"; | |
7736 | case DW_TAG_friend: | |
7737 | return "DW_TAG_friend"; | |
7738 | case DW_TAG_namelist: | |
7739 | return "DW_TAG_namelist"; | |
7740 | case DW_TAG_namelist_item: | |
7741 | return "DW_TAG_namelist_item"; | |
7742 | case DW_TAG_packed_type: | |
7743 | return "DW_TAG_packed_type"; | |
7744 | case DW_TAG_subprogram: | |
7745 | return "DW_TAG_subprogram"; | |
7746 | case DW_TAG_template_type_param: | |
7747 | return "DW_TAG_template_type_param"; | |
7748 | case DW_TAG_template_value_param: | |
7749 | return "DW_TAG_template_value_param"; | |
7750 | case DW_TAG_thrown_type: | |
7751 | return "DW_TAG_thrown_type"; | |
7752 | case DW_TAG_try_block: | |
7753 | return "DW_TAG_try_block"; | |
7754 | case DW_TAG_variant_part: | |
7755 | return "DW_TAG_variant_part"; | |
7756 | case DW_TAG_variable: | |
7757 | return "DW_TAG_variable"; | |
7758 | case DW_TAG_volatile_type: | |
7759 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
7760 | case DW_TAG_dwarf_procedure: |
7761 | return "DW_TAG_dwarf_procedure"; | |
7762 | case DW_TAG_restrict_type: | |
7763 | return "DW_TAG_restrict_type"; | |
7764 | case DW_TAG_interface_type: | |
7765 | return "DW_TAG_interface_type"; | |
7766 | case DW_TAG_namespace: | |
7767 | return "DW_TAG_namespace"; | |
7768 | case DW_TAG_imported_module: | |
7769 | return "DW_TAG_imported_module"; | |
7770 | case DW_TAG_unspecified_type: | |
7771 | return "DW_TAG_unspecified_type"; | |
7772 | case DW_TAG_partial_unit: | |
7773 | return "DW_TAG_partial_unit"; | |
7774 | case DW_TAG_imported_unit: | |
7775 | return "DW_TAG_imported_unit"; | |
c906108c SS |
7776 | case DW_TAG_MIPS_loop: |
7777 | return "DW_TAG_MIPS_loop"; | |
7778 | case DW_TAG_format_label: | |
7779 | return "DW_TAG_format_label"; | |
7780 | case DW_TAG_function_template: | |
7781 | return "DW_TAG_function_template"; | |
7782 | case DW_TAG_class_template: | |
7783 | return "DW_TAG_class_template"; | |
7784 | default: | |
7785 | return "DW_TAG_<unknown>"; | |
7786 | } | |
7787 | } | |
7788 | ||
7789 | /* Convert a DWARF attribute code into its string name. */ | |
7790 | ||
7791 | static char * | |
aa1ee363 | 7792 | dwarf_attr_name (unsigned attr) |
c906108c SS |
7793 | { |
7794 | switch (attr) | |
7795 | { | |
7796 | case DW_AT_sibling: | |
7797 | return "DW_AT_sibling"; | |
7798 | case DW_AT_location: | |
7799 | return "DW_AT_location"; | |
7800 | case DW_AT_name: | |
7801 | return "DW_AT_name"; | |
7802 | case DW_AT_ordering: | |
7803 | return "DW_AT_ordering"; | |
7804 | case DW_AT_subscr_data: | |
7805 | return "DW_AT_subscr_data"; | |
7806 | case DW_AT_byte_size: | |
7807 | return "DW_AT_byte_size"; | |
7808 | case DW_AT_bit_offset: | |
7809 | return "DW_AT_bit_offset"; | |
7810 | case DW_AT_bit_size: | |
7811 | return "DW_AT_bit_size"; | |
7812 | case DW_AT_element_list: | |
7813 | return "DW_AT_element_list"; | |
7814 | case DW_AT_stmt_list: | |
7815 | return "DW_AT_stmt_list"; | |
7816 | case DW_AT_low_pc: | |
7817 | return "DW_AT_low_pc"; | |
7818 | case DW_AT_high_pc: | |
7819 | return "DW_AT_high_pc"; | |
7820 | case DW_AT_language: | |
7821 | return "DW_AT_language"; | |
7822 | case DW_AT_member: | |
7823 | return "DW_AT_member"; | |
7824 | case DW_AT_discr: | |
7825 | return "DW_AT_discr"; | |
7826 | case DW_AT_discr_value: | |
7827 | return "DW_AT_discr_value"; | |
7828 | case DW_AT_visibility: | |
7829 | return "DW_AT_visibility"; | |
7830 | case DW_AT_import: | |
7831 | return "DW_AT_import"; | |
7832 | case DW_AT_string_length: | |
7833 | return "DW_AT_string_length"; | |
7834 | case DW_AT_common_reference: | |
7835 | return "DW_AT_common_reference"; | |
7836 | case DW_AT_comp_dir: | |
7837 | return "DW_AT_comp_dir"; | |
7838 | case DW_AT_const_value: | |
7839 | return "DW_AT_const_value"; | |
7840 | case DW_AT_containing_type: | |
7841 | return "DW_AT_containing_type"; | |
7842 | case DW_AT_default_value: | |
7843 | return "DW_AT_default_value"; | |
7844 | case DW_AT_inline: | |
7845 | return "DW_AT_inline"; | |
7846 | case DW_AT_is_optional: | |
7847 | return "DW_AT_is_optional"; | |
7848 | case DW_AT_lower_bound: | |
7849 | return "DW_AT_lower_bound"; | |
7850 | case DW_AT_producer: | |
7851 | return "DW_AT_producer"; | |
7852 | case DW_AT_prototyped: | |
7853 | return "DW_AT_prototyped"; | |
7854 | case DW_AT_return_addr: | |
7855 | return "DW_AT_return_addr"; | |
7856 | case DW_AT_start_scope: | |
7857 | return "DW_AT_start_scope"; | |
7858 | case DW_AT_stride_size: | |
7859 | return "DW_AT_stride_size"; | |
7860 | case DW_AT_upper_bound: | |
7861 | return "DW_AT_upper_bound"; | |
7862 | case DW_AT_abstract_origin: | |
7863 | return "DW_AT_abstract_origin"; | |
7864 | case DW_AT_accessibility: | |
7865 | return "DW_AT_accessibility"; | |
7866 | case DW_AT_address_class: | |
7867 | return "DW_AT_address_class"; | |
7868 | case DW_AT_artificial: | |
7869 | return "DW_AT_artificial"; | |
7870 | case DW_AT_base_types: | |
7871 | return "DW_AT_base_types"; | |
7872 | case DW_AT_calling_convention: | |
7873 | return "DW_AT_calling_convention"; | |
7874 | case DW_AT_count: | |
7875 | return "DW_AT_count"; | |
7876 | case DW_AT_data_member_location: | |
7877 | return "DW_AT_data_member_location"; | |
7878 | case DW_AT_decl_column: | |
7879 | return "DW_AT_decl_column"; | |
7880 | case DW_AT_decl_file: | |
7881 | return "DW_AT_decl_file"; | |
7882 | case DW_AT_decl_line: | |
7883 | return "DW_AT_decl_line"; | |
7884 | case DW_AT_declaration: | |
7885 | return "DW_AT_declaration"; | |
7886 | case DW_AT_discr_list: | |
7887 | return "DW_AT_discr_list"; | |
7888 | case DW_AT_encoding: | |
7889 | return "DW_AT_encoding"; | |
7890 | case DW_AT_external: | |
7891 | return "DW_AT_external"; | |
7892 | case DW_AT_frame_base: | |
7893 | return "DW_AT_frame_base"; | |
7894 | case DW_AT_friend: | |
7895 | return "DW_AT_friend"; | |
7896 | case DW_AT_identifier_case: | |
7897 | return "DW_AT_identifier_case"; | |
7898 | case DW_AT_macro_info: | |
7899 | return "DW_AT_macro_info"; | |
7900 | case DW_AT_namelist_items: | |
7901 | return "DW_AT_namelist_items"; | |
7902 | case DW_AT_priority: | |
7903 | return "DW_AT_priority"; | |
7904 | case DW_AT_segment: | |
7905 | return "DW_AT_segment"; | |
7906 | case DW_AT_specification: | |
7907 | return "DW_AT_specification"; | |
7908 | case DW_AT_static_link: | |
7909 | return "DW_AT_static_link"; | |
7910 | case DW_AT_type: | |
7911 | return "DW_AT_type"; | |
7912 | case DW_AT_use_location: | |
7913 | return "DW_AT_use_location"; | |
7914 | case DW_AT_variable_parameter: | |
7915 | return "DW_AT_variable_parameter"; | |
7916 | case DW_AT_virtuality: | |
7917 | return "DW_AT_virtuality"; | |
7918 | case DW_AT_vtable_elem_location: | |
7919 | return "DW_AT_vtable_elem_location"; | |
d9fa45fe DC |
7920 | case DW_AT_allocated: |
7921 | return "DW_AT_allocated"; | |
7922 | case DW_AT_associated: | |
7923 | return "DW_AT_associated"; | |
7924 | case DW_AT_data_location: | |
7925 | return "DW_AT_data_location"; | |
7926 | case DW_AT_stride: | |
7927 | return "DW_AT_stride"; | |
7928 | case DW_AT_entry_pc: | |
7929 | return "DW_AT_entry_pc"; | |
7930 | case DW_AT_use_UTF8: | |
7931 | return "DW_AT_use_UTF8"; | |
7932 | case DW_AT_extension: | |
7933 | return "DW_AT_extension"; | |
7934 | case DW_AT_ranges: | |
7935 | return "DW_AT_ranges"; | |
7936 | case DW_AT_trampoline: | |
7937 | return "DW_AT_trampoline"; | |
7938 | case DW_AT_call_column: | |
7939 | return "DW_AT_call_column"; | |
7940 | case DW_AT_call_file: | |
7941 | return "DW_AT_call_file"; | |
7942 | case DW_AT_call_line: | |
7943 | return "DW_AT_call_line"; | |
c906108c SS |
7944 | #ifdef MIPS |
7945 | case DW_AT_MIPS_fde: | |
7946 | return "DW_AT_MIPS_fde"; | |
7947 | case DW_AT_MIPS_loop_begin: | |
7948 | return "DW_AT_MIPS_loop_begin"; | |
7949 | case DW_AT_MIPS_tail_loop_begin: | |
7950 | return "DW_AT_MIPS_tail_loop_begin"; | |
7951 | case DW_AT_MIPS_epilog_begin: | |
7952 | return "DW_AT_MIPS_epilog_begin"; | |
7953 | case DW_AT_MIPS_loop_unroll_factor: | |
7954 | return "DW_AT_MIPS_loop_unroll_factor"; | |
7955 | case DW_AT_MIPS_software_pipeline_depth: | |
7956 | return "DW_AT_MIPS_software_pipeline_depth"; | |
e0a4f5a1 | 7957 | #endif |
c906108c SS |
7958 | case DW_AT_MIPS_linkage_name: |
7959 | return "DW_AT_MIPS_linkage_name"; | |
c906108c SS |
7960 | |
7961 | case DW_AT_sf_names: | |
7962 | return "DW_AT_sf_names"; | |
7963 | case DW_AT_src_info: | |
7964 | return "DW_AT_src_info"; | |
7965 | case DW_AT_mac_info: | |
7966 | return "DW_AT_mac_info"; | |
7967 | case DW_AT_src_coords: | |
7968 | return "DW_AT_src_coords"; | |
7969 | case DW_AT_body_begin: | |
7970 | return "DW_AT_body_begin"; | |
7971 | case DW_AT_body_end: | |
7972 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
7973 | case DW_AT_GNU_vector: |
7974 | return "DW_AT_GNU_vector"; | |
c906108c SS |
7975 | default: |
7976 | return "DW_AT_<unknown>"; | |
7977 | } | |
7978 | } | |
7979 | ||
7980 | /* Convert a DWARF value form code into its string name. */ | |
7981 | ||
7982 | static char * | |
aa1ee363 | 7983 | dwarf_form_name (unsigned form) |
c906108c SS |
7984 | { |
7985 | switch (form) | |
7986 | { | |
7987 | case DW_FORM_addr: | |
7988 | return "DW_FORM_addr"; | |
7989 | case DW_FORM_block2: | |
7990 | return "DW_FORM_block2"; | |
7991 | case DW_FORM_block4: | |
7992 | return "DW_FORM_block4"; | |
7993 | case DW_FORM_data2: | |
7994 | return "DW_FORM_data2"; | |
7995 | case DW_FORM_data4: | |
7996 | return "DW_FORM_data4"; | |
7997 | case DW_FORM_data8: | |
7998 | return "DW_FORM_data8"; | |
7999 | case DW_FORM_string: | |
8000 | return "DW_FORM_string"; | |
8001 | case DW_FORM_block: | |
8002 | return "DW_FORM_block"; | |
8003 | case DW_FORM_block1: | |
8004 | return "DW_FORM_block1"; | |
8005 | case DW_FORM_data1: | |
8006 | return "DW_FORM_data1"; | |
8007 | case DW_FORM_flag: | |
8008 | return "DW_FORM_flag"; | |
8009 | case DW_FORM_sdata: | |
8010 | return "DW_FORM_sdata"; | |
8011 | case DW_FORM_strp: | |
8012 | return "DW_FORM_strp"; | |
8013 | case DW_FORM_udata: | |
8014 | return "DW_FORM_udata"; | |
8015 | case DW_FORM_ref_addr: | |
8016 | return "DW_FORM_ref_addr"; | |
8017 | case DW_FORM_ref1: | |
8018 | return "DW_FORM_ref1"; | |
8019 | case DW_FORM_ref2: | |
8020 | return "DW_FORM_ref2"; | |
8021 | case DW_FORM_ref4: | |
8022 | return "DW_FORM_ref4"; | |
8023 | case DW_FORM_ref8: | |
8024 | return "DW_FORM_ref8"; | |
8025 | case DW_FORM_ref_udata: | |
8026 | return "DW_FORM_ref_udata"; | |
8027 | case DW_FORM_indirect: | |
8028 | return "DW_FORM_indirect"; | |
8029 | default: | |
8030 | return "DW_FORM_<unknown>"; | |
8031 | } | |
8032 | } | |
8033 | ||
8034 | /* Convert a DWARF stack opcode into its string name. */ | |
8035 | ||
8036 | static char * | |
aa1ee363 | 8037 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
8038 | { |
8039 | switch (op) | |
8040 | { | |
8041 | case DW_OP_addr: | |
8042 | return "DW_OP_addr"; | |
8043 | case DW_OP_deref: | |
8044 | return "DW_OP_deref"; | |
8045 | case DW_OP_const1u: | |
8046 | return "DW_OP_const1u"; | |
8047 | case DW_OP_const1s: | |
8048 | return "DW_OP_const1s"; | |
8049 | case DW_OP_const2u: | |
8050 | return "DW_OP_const2u"; | |
8051 | case DW_OP_const2s: | |
8052 | return "DW_OP_const2s"; | |
8053 | case DW_OP_const4u: | |
8054 | return "DW_OP_const4u"; | |
8055 | case DW_OP_const4s: | |
8056 | return "DW_OP_const4s"; | |
8057 | case DW_OP_const8u: | |
8058 | return "DW_OP_const8u"; | |
8059 | case DW_OP_const8s: | |
8060 | return "DW_OP_const8s"; | |
8061 | case DW_OP_constu: | |
8062 | return "DW_OP_constu"; | |
8063 | case DW_OP_consts: | |
8064 | return "DW_OP_consts"; | |
8065 | case DW_OP_dup: | |
8066 | return "DW_OP_dup"; | |
8067 | case DW_OP_drop: | |
8068 | return "DW_OP_drop"; | |
8069 | case DW_OP_over: | |
8070 | return "DW_OP_over"; | |
8071 | case DW_OP_pick: | |
8072 | return "DW_OP_pick"; | |
8073 | case DW_OP_swap: | |
8074 | return "DW_OP_swap"; | |
8075 | case DW_OP_rot: | |
8076 | return "DW_OP_rot"; | |
8077 | case DW_OP_xderef: | |
8078 | return "DW_OP_xderef"; | |
8079 | case DW_OP_abs: | |
8080 | return "DW_OP_abs"; | |
8081 | case DW_OP_and: | |
8082 | return "DW_OP_and"; | |
8083 | case DW_OP_div: | |
8084 | return "DW_OP_div"; | |
8085 | case DW_OP_minus: | |
8086 | return "DW_OP_minus"; | |
8087 | case DW_OP_mod: | |
8088 | return "DW_OP_mod"; | |
8089 | case DW_OP_mul: | |
8090 | return "DW_OP_mul"; | |
8091 | case DW_OP_neg: | |
8092 | return "DW_OP_neg"; | |
8093 | case DW_OP_not: | |
8094 | return "DW_OP_not"; | |
8095 | case DW_OP_or: | |
8096 | return "DW_OP_or"; | |
8097 | case DW_OP_plus: | |
8098 | return "DW_OP_plus"; | |
8099 | case DW_OP_plus_uconst: | |
8100 | return "DW_OP_plus_uconst"; | |
8101 | case DW_OP_shl: | |
8102 | return "DW_OP_shl"; | |
8103 | case DW_OP_shr: | |
8104 | return "DW_OP_shr"; | |
8105 | case DW_OP_shra: | |
8106 | return "DW_OP_shra"; | |
8107 | case DW_OP_xor: | |
8108 | return "DW_OP_xor"; | |
8109 | case DW_OP_bra: | |
8110 | return "DW_OP_bra"; | |
8111 | case DW_OP_eq: | |
8112 | return "DW_OP_eq"; | |
8113 | case DW_OP_ge: | |
8114 | return "DW_OP_ge"; | |
8115 | case DW_OP_gt: | |
8116 | return "DW_OP_gt"; | |
8117 | case DW_OP_le: | |
8118 | return "DW_OP_le"; | |
8119 | case DW_OP_lt: | |
8120 | return "DW_OP_lt"; | |
8121 | case DW_OP_ne: | |
8122 | return "DW_OP_ne"; | |
8123 | case DW_OP_skip: | |
8124 | return "DW_OP_skip"; | |
8125 | case DW_OP_lit0: | |
8126 | return "DW_OP_lit0"; | |
8127 | case DW_OP_lit1: | |
8128 | return "DW_OP_lit1"; | |
8129 | case DW_OP_lit2: | |
8130 | return "DW_OP_lit2"; | |
8131 | case DW_OP_lit3: | |
8132 | return "DW_OP_lit3"; | |
8133 | case DW_OP_lit4: | |
8134 | return "DW_OP_lit4"; | |
8135 | case DW_OP_lit5: | |
8136 | return "DW_OP_lit5"; | |
8137 | case DW_OP_lit6: | |
8138 | return "DW_OP_lit6"; | |
8139 | case DW_OP_lit7: | |
8140 | return "DW_OP_lit7"; | |
8141 | case DW_OP_lit8: | |
8142 | return "DW_OP_lit8"; | |
8143 | case DW_OP_lit9: | |
8144 | return "DW_OP_lit9"; | |
8145 | case DW_OP_lit10: | |
8146 | return "DW_OP_lit10"; | |
8147 | case DW_OP_lit11: | |
8148 | return "DW_OP_lit11"; | |
8149 | case DW_OP_lit12: | |
8150 | return "DW_OP_lit12"; | |
8151 | case DW_OP_lit13: | |
8152 | return "DW_OP_lit13"; | |
8153 | case DW_OP_lit14: | |
8154 | return "DW_OP_lit14"; | |
8155 | case DW_OP_lit15: | |
8156 | return "DW_OP_lit15"; | |
8157 | case DW_OP_lit16: | |
8158 | return "DW_OP_lit16"; | |
8159 | case DW_OP_lit17: | |
8160 | return "DW_OP_lit17"; | |
8161 | case DW_OP_lit18: | |
8162 | return "DW_OP_lit18"; | |
8163 | case DW_OP_lit19: | |
8164 | return "DW_OP_lit19"; | |
8165 | case DW_OP_lit20: | |
8166 | return "DW_OP_lit20"; | |
8167 | case DW_OP_lit21: | |
8168 | return "DW_OP_lit21"; | |
8169 | case DW_OP_lit22: | |
8170 | return "DW_OP_lit22"; | |
8171 | case DW_OP_lit23: | |
8172 | return "DW_OP_lit23"; | |
8173 | case DW_OP_lit24: | |
8174 | return "DW_OP_lit24"; | |
8175 | case DW_OP_lit25: | |
8176 | return "DW_OP_lit25"; | |
8177 | case DW_OP_lit26: | |
8178 | return "DW_OP_lit26"; | |
8179 | case DW_OP_lit27: | |
8180 | return "DW_OP_lit27"; | |
8181 | case DW_OP_lit28: | |
8182 | return "DW_OP_lit28"; | |
8183 | case DW_OP_lit29: | |
8184 | return "DW_OP_lit29"; | |
8185 | case DW_OP_lit30: | |
8186 | return "DW_OP_lit30"; | |
8187 | case DW_OP_lit31: | |
8188 | return "DW_OP_lit31"; | |
8189 | case DW_OP_reg0: | |
8190 | return "DW_OP_reg0"; | |
8191 | case DW_OP_reg1: | |
8192 | return "DW_OP_reg1"; | |
8193 | case DW_OP_reg2: | |
8194 | return "DW_OP_reg2"; | |
8195 | case DW_OP_reg3: | |
8196 | return "DW_OP_reg3"; | |
8197 | case DW_OP_reg4: | |
8198 | return "DW_OP_reg4"; | |
8199 | case DW_OP_reg5: | |
8200 | return "DW_OP_reg5"; | |
8201 | case DW_OP_reg6: | |
8202 | return "DW_OP_reg6"; | |
8203 | case DW_OP_reg7: | |
8204 | return "DW_OP_reg7"; | |
8205 | case DW_OP_reg8: | |
8206 | return "DW_OP_reg8"; | |
8207 | case DW_OP_reg9: | |
8208 | return "DW_OP_reg9"; | |
8209 | case DW_OP_reg10: | |
8210 | return "DW_OP_reg10"; | |
8211 | case DW_OP_reg11: | |
8212 | return "DW_OP_reg11"; | |
8213 | case DW_OP_reg12: | |
8214 | return "DW_OP_reg12"; | |
8215 | case DW_OP_reg13: | |
8216 | return "DW_OP_reg13"; | |
8217 | case DW_OP_reg14: | |
8218 | return "DW_OP_reg14"; | |
8219 | case DW_OP_reg15: | |
8220 | return "DW_OP_reg15"; | |
8221 | case DW_OP_reg16: | |
8222 | return "DW_OP_reg16"; | |
8223 | case DW_OP_reg17: | |
8224 | return "DW_OP_reg17"; | |
8225 | case DW_OP_reg18: | |
8226 | return "DW_OP_reg18"; | |
8227 | case DW_OP_reg19: | |
8228 | return "DW_OP_reg19"; | |
8229 | case DW_OP_reg20: | |
8230 | return "DW_OP_reg20"; | |
8231 | case DW_OP_reg21: | |
8232 | return "DW_OP_reg21"; | |
8233 | case DW_OP_reg22: | |
8234 | return "DW_OP_reg22"; | |
8235 | case DW_OP_reg23: | |
8236 | return "DW_OP_reg23"; | |
8237 | case DW_OP_reg24: | |
8238 | return "DW_OP_reg24"; | |
8239 | case DW_OP_reg25: | |
8240 | return "DW_OP_reg25"; | |
8241 | case DW_OP_reg26: | |
8242 | return "DW_OP_reg26"; | |
8243 | case DW_OP_reg27: | |
8244 | return "DW_OP_reg27"; | |
8245 | case DW_OP_reg28: | |
8246 | return "DW_OP_reg28"; | |
8247 | case DW_OP_reg29: | |
8248 | return "DW_OP_reg29"; | |
8249 | case DW_OP_reg30: | |
8250 | return "DW_OP_reg30"; | |
8251 | case DW_OP_reg31: | |
8252 | return "DW_OP_reg31"; | |
8253 | case DW_OP_breg0: | |
8254 | return "DW_OP_breg0"; | |
8255 | case DW_OP_breg1: | |
8256 | return "DW_OP_breg1"; | |
8257 | case DW_OP_breg2: | |
8258 | return "DW_OP_breg2"; | |
8259 | case DW_OP_breg3: | |
8260 | return "DW_OP_breg3"; | |
8261 | case DW_OP_breg4: | |
8262 | return "DW_OP_breg4"; | |
8263 | case DW_OP_breg5: | |
8264 | return "DW_OP_breg5"; | |
8265 | case DW_OP_breg6: | |
8266 | return "DW_OP_breg6"; | |
8267 | case DW_OP_breg7: | |
8268 | return "DW_OP_breg7"; | |
8269 | case DW_OP_breg8: | |
8270 | return "DW_OP_breg8"; | |
8271 | case DW_OP_breg9: | |
8272 | return "DW_OP_breg9"; | |
8273 | case DW_OP_breg10: | |
8274 | return "DW_OP_breg10"; | |
8275 | case DW_OP_breg11: | |
8276 | return "DW_OP_breg11"; | |
8277 | case DW_OP_breg12: | |
8278 | return "DW_OP_breg12"; | |
8279 | case DW_OP_breg13: | |
8280 | return "DW_OP_breg13"; | |
8281 | case DW_OP_breg14: | |
8282 | return "DW_OP_breg14"; | |
8283 | case DW_OP_breg15: | |
8284 | return "DW_OP_breg15"; | |
8285 | case DW_OP_breg16: | |
8286 | return "DW_OP_breg16"; | |
8287 | case DW_OP_breg17: | |
8288 | return "DW_OP_breg17"; | |
8289 | case DW_OP_breg18: | |
8290 | return "DW_OP_breg18"; | |
8291 | case DW_OP_breg19: | |
8292 | return "DW_OP_breg19"; | |
8293 | case DW_OP_breg20: | |
8294 | return "DW_OP_breg20"; | |
8295 | case DW_OP_breg21: | |
8296 | return "DW_OP_breg21"; | |
8297 | case DW_OP_breg22: | |
8298 | return "DW_OP_breg22"; | |
8299 | case DW_OP_breg23: | |
8300 | return "DW_OP_breg23"; | |
8301 | case DW_OP_breg24: | |
8302 | return "DW_OP_breg24"; | |
8303 | case DW_OP_breg25: | |
8304 | return "DW_OP_breg25"; | |
8305 | case DW_OP_breg26: | |
8306 | return "DW_OP_breg26"; | |
8307 | case DW_OP_breg27: | |
8308 | return "DW_OP_breg27"; | |
8309 | case DW_OP_breg28: | |
8310 | return "DW_OP_breg28"; | |
8311 | case DW_OP_breg29: | |
8312 | return "DW_OP_breg29"; | |
8313 | case DW_OP_breg30: | |
8314 | return "DW_OP_breg30"; | |
8315 | case DW_OP_breg31: | |
8316 | return "DW_OP_breg31"; | |
8317 | case DW_OP_regx: | |
8318 | return "DW_OP_regx"; | |
8319 | case DW_OP_fbreg: | |
8320 | return "DW_OP_fbreg"; | |
8321 | case DW_OP_bregx: | |
8322 | return "DW_OP_bregx"; | |
8323 | case DW_OP_piece: | |
8324 | return "DW_OP_piece"; | |
8325 | case DW_OP_deref_size: | |
8326 | return "DW_OP_deref_size"; | |
8327 | case DW_OP_xderef_size: | |
8328 | return "DW_OP_xderef_size"; | |
8329 | case DW_OP_nop: | |
8330 | return "DW_OP_nop"; | |
ed348acc EZ |
8331 | /* DWARF 3 extensions. */ |
8332 | case DW_OP_push_object_address: | |
8333 | return "DW_OP_push_object_address"; | |
8334 | case DW_OP_call2: | |
8335 | return "DW_OP_call2"; | |
8336 | case DW_OP_call4: | |
8337 | return "DW_OP_call4"; | |
8338 | case DW_OP_call_ref: | |
8339 | return "DW_OP_call_ref"; | |
8340 | /* GNU extensions. */ | |
8341 | case DW_OP_GNU_push_tls_address: | |
8342 | return "DW_OP_GNU_push_tls_address"; | |
c906108c SS |
8343 | default: |
8344 | return "OP_<unknown>"; | |
8345 | } | |
8346 | } | |
8347 | ||
8348 | static char * | |
fba45db2 | 8349 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
8350 | { |
8351 | if (mybool) | |
8352 | return "TRUE"; | |
8353 | else | |
8354 | return "FALSE"; | |
8355 | } | |
8356 | ||
8357 | /* Convert a DWARF type code into its string name. */ | |
8358 | ||
8359 | static char * | |
aa1ee363 | 8360 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
8361 | { |
8362 | switch (enc) | |
8363 | { | |
8364 | case DW_ATE_address: | |
8365 | return "DW_ATE_address"; | |
8366 | case DW_ATE_boolean: | |
8367 | return "DW_ATE_boolean"; | |
8368 | case DW_ATE_complex_float: | |
8369 | return "DW_ATE_complex_float"; | |
8370 | case DW_ATE_float: | |
8371 | return "DW_ATE_float"; | |
8372 | case DW_ATE_signed: | |
8373 | return "DW_ATE_signed"; | |
8374 | case DW_ATE_signed_char: | |
8375 | return "DW_ATE_signed_char"; | |
8376 | case DW_ATE_unsigned: | |
8377 | return "DW_ATE_unsigned"; | |
8378 | case DW_ATE_unsigned_char: | |
8379 | return "DW_ATE_unsigned_char"; | |
d9fa45fe DC |
8380 | case DW_ATE_imaginary_float: |
8381 | return "DW_ATE_imaginary_float"; | |
c906108c SS |
8382 | default: |
8383 | return "DW_ATE_<unknown>"; | |
8384 | } | |
8385 | } | |
8386 | ||
8387 | /* Convert a DWARF call frame info operation to its string name. */ | |
8388 | ||
8389 | #if 0 | |
8390 | static char * | |
aa1ee363 | 8391 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
8392 | { |
8393 | switch (cfi_opc) | |
8394 | { | |
8395 | case DW_CFA_advance_loc: | |
8396 | return "DW_CFA_advance_loc"; | |
8397 | case DW_CFA_offset: | |
8398 | return "DW_CFA_offset"; | |
8399 | case DW_CFA_restore: | |
8400 | return "DW_CFA_restore"; | |
8401 | case DW_CFA_nop: | |
8402 | return "DW_CFA_nop"; | |
8403 | case DW_CFA_set_loc: | |
8404 | return "DW_CFA_set_loc"; | |
8405 | case DW_CFA_advance_loc1: | |
8406 | return "DW_CFA_advance_loc1"; | |
8407 | case DW_CFA_advance_loc2: | |
8408 | return "DW_CFA_advance_loc2"; | |
8409 | case DW_CFA_advance_loc4: | |
8410 | return "DW_CFA_advance_loc4"; | |
8411 | case DW_CFA_offset_extended: | |
8412 | return "DW_CFA_offset_extended"; | |
8413 | case DW_CFA_restore_extended: | |
8414 | return "DW_CFA_restore_extended"; | |
8415 | case DW_CFA_undefined: | |
8416 | return "DW_CFA_undefined"; | |
8417 | case DW_CFA_same_value: | |
8418 | return "DW_CFA_same_value"; | |
8419 | case DW_CFA_register: | |
8420 | return "DW_CFA_register"; | |
8421 | case DW_CFA_remember_state: | |
8422 | return "DW_CFA_remember_state"; | |
8423 | case DW_CFA_restore_state: | |
8424 | return "DW_CFA_restore_state"; | |
8425 | case DW_CFA_def_cfa: | |
8426 | return "DW_CFA_def_cfa"; | |
8427 | case DW_CFA_def_cfa_register: | |
8428 | return "DW_CFA_def_cfa_register"; | |
8429 | case DW_CFA_def_cfa_offset: | |
8430 | return "DW_CFA_def_cfa_offset"; | |
985cb1a3 JM |
8431 | |
8432 | /* DWARF 3 */ | |
8433 | case DW_CFA_def_cfa_expression: | |
8434 | return "DW_CFA_def_cfa_expression"; | |
8435 | case DW_CFA_expression: | |
8436 | return "DW_CFA_expression"; | |
8437 | case DW_CFA_offset_extended_sf: | |
8438 | return "DW_CFA_offset_extended_sf"; | |
8439 | case DW_CFA_def_cfa_sf: | |
8440 | return "DW_CFA_def_cfa_sf"; | |
8441 | case DW_CFA_def_cfa_offset_sf: | |
8442 | return "DW_CFA_def_cfa_offset_sf"; | |
8443 | ||
c906108c SS |
8444 | /* SGI/MIPS specific */ |
8445 | case DW_CFA_MIPS_advance_loc8: | |
8446 | return "DW_CFA_MIPS_advance_loc8"; | |
985cb1a3 JM |
8447 | |
8448 | /* GNU extensions */ | |
8449 | case DW_CFA_GNU_window_save: | |
8450 | return "DW_CFA_GNU_window_save"; | |
8451 | case DW_CFA_GNU_args_size: | |
8452 | return "DW_CFA_GNU_args_size"; | |
8453 | case DW_CFA_GNU_negative_offset_extended: | |
8454 | return "DW_CFA_GNU_negative_offset_extended"; | |
8455 | ||
c906108c SS |
8456 | default: |
8457 | return "DW_CFA_<unknown>"; | |
8458 | } | |
8459 | } | |
8460 | #endif | |
8461 | ||
f9aca02d | 8462 | static void |
fba45db2 | 8463 | dump_die (struct die_info *die) |
c906108c SS |
8464 | { |
8465 | unsigned int i; | |
8466 | ||
48cd0caa | 8467 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 8468 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 8469 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 8470 | dwarf_bool_name (die->child != NULL)); |
c906108c | 8471 | |
48cd0caa | 8472 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
8473 | for (i = 0; i < die->num_attrs; ++i) |
8474 | { | |
48cd0caa | 8475 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
8476 | dwarf_attr_name (die->attrs[i].name), |
8477 | dwarf_form_name (die->attrs[i].form)); | |
8478 | switch (die->attrs[i].form) | |
8479 | { | |
8480 | case DW_FORM_ref_addr: | |
8481 | case DW_FORM_addr: | |
48cd0caa | 8482 | fprintf_unfiltered (gdb_stderr, "address: "); |
66bf4b3a | 8483 | deprecated_print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr); |
c906108c SS |
8484 | break; |
8485 | case DW_FORM_block2: | |
8486 | case DW_FORM_block4: | |
8487 | case DW_FORM_block: | |
8488 | case DW_FORM_block1: | |
48cd0caa | 8489 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 8490 | break; |
10b3939b DJ |
8491 | case DW_FORM_ref1: |
8492 | case DW_FORM_ref2: | |
8493 | case DW_FORM_ref4: | |
8494 | fprintf_unfiltered (gdb_stderr, "constant ref: %ld (adjusted)", | |
8495 | (long) (DW_ADDR (&die->attrs[i]))); | |
8496 | break; | |
c906108c SS |
8497 | case DW_FORM_data1: |
8498 | case DW_FORM_data2: | |
8499 | case DW_FORM_data4: | |
ce5d95e1 | 8500 | case DW_FORM_data8: |
c906108c SS |
8501 | case DW_FORM_udata: |
8502 | case DW_FORM_sdata: | |
48cd0caa | 8503 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
8504 | break; |
8505 | case DW_FORM_string: | |
4bdf3d34 | 8506 | case DW_FORM_strp: |
48cd0caa | 8507 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 8508 | DW_STRING (&die->attrs[i]) |
c5aa993b | 8509 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
8510 | break; |
8511 | case DW_FORM_flag: | |
8512 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 8513 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 8514 | else |
48cd0caa | 8515 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 8516 | break; |
a8329558 KW |
8517 | case DW_FORM_indirect: |
8518 | /* the reader will have reduced the indirect form to | |
8519 | the "base form" so this form should not occur */ | |
48cd0caa | 8520 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 8521 | break; |
c906108c | 8522 | default: |
48cd0caa | 8523 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 8524 | die->attrs[i].form); |
c906108c | 8525 | } |
48cd0caa | 8526 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
8527 | } |
8528 | } | |
8529 | ||
f9aca02d | 8530 | static void |
fba45db2 | 8531 | dump_die_list (struct die_info *die) |
c906108c SS |
8532 | { |
8533 | while (die) | |
8534 | { | |
8535 | dump_die (die); | |
639d11d3 DC |
8536 | if (die->child != NULL) |
8537 | dump_die_list (die->child); | |
8538 | if (die->sibling != NULL) | |
8539 | dump_die_list (die->sibling); | |
c906108c SS |
8540 | } |
8541 | } | |
8542 | ||
f9aca02d | 8543 | static void |
10b3939b DJ |
8544 | store_in_ref_table (unsigned int offset, struct die_info *die, |
8545 | struct dwarf2_cu *cu) | |
c906108c SS |
8546 | { |
8547 | int h; | |
8548 | struct die_info *old; | |
8549 | ||
8550 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8551 | old = cu->die_ref_table[h]; |
c906108c | 8552 | die->next_ref = old; |
10b3939b | 8553 | cu->die_ref_table[h] = die; |
c906108c SS |
8554 | } |
8555 | ||
8556 | static unsigned int | |
e142c38c | 8557 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
8558 | { |
8559 | unsigned int result = 0; | |
8560 | ||
8561 | switch (attr->form) | |
8562 | { | |
8563 | case DW_FORM_ref_addr: | |
c906108c SS |
8564 | case DW_FORM_ref1: |
8565 | case DW_FORM_ref2: | |
8566 | case DW_FORM_ref4: | |
613e1657 | 8567 | case DW_FORM_ref8: |
c906108c | 8568 | case DW_FORM_ref_udata: |
10b3939b | 8569 | result = DW_ADDR (attr); |
c906108c SS |
8570 | break; |
8571 | default: | |
4d3c2250 | 8572 | complaint (&symfile_complaints, |
e2e0b3e5 | 8573 | _("unsupported die ref attribute form: '%s'"), |
4d3c2250 | 8574 | dwarf_form_name (attr->form)); |
c906108c SS |
8575 | } |
8576 | return result; | |
8577 | } | |
8578 | ||
a02abb62 JB |
8579 | /* Return the constant value held by the given attribute. Return -1 |
8580 | if the value held by the attribute is not constant. */ | |
8581 | ||
8582 | static int | |
8583 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
8584 | { | |
8585 | if (attr->form == DW_FORM_sdata) | |
8586 | return DW_SND (attr); | |
8587 | else if (attr->form == DW_FORM_udata | |
8588 | || attr->form == DW_FORM_data1 | |
8589 | || attr->form == DW_FORM_data2 | |
8590 | || attr->form == DW_FORM_data4 | |
8591 | || attr->form == DW_FORM_data8) | |
8592 | return DW_UNSND (attr); | |
8593 | else | |
8594 | { | |
e2e0b3e5 | 8595 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
8596 | dwarf_form_name (attr->form)); |
8597 | return default_value; | |
8598 | } | |
8599 | } | |
8600 | ||
f9aca02d | 8601 | static struct die_info * |
10b3939b DJ |
8602 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
8603 | struct dwarf2_cu *cu) | |
c906108c SS |
8604 | { |
8605 | struct die_info *die; | |
10b3939b | 8606 | unsigned int offset; |
c906108c | 8607 | int h; |
10b3939b DJ |
8608 | struct die_info temp_die; |
8609 | struct dwarf2_cu *target_cu; | |
8610 | ||
8611 | offset = dwarf2_get_ref_die_offset (attr, cu); | |
8612 | ||
8613 | if (DW_ADDR (attr) < cu->header.offset | |
8614 | || DW_ADDR (attr) >= cu->header.offset + cu->header.length) | |
8615 | { | |
8616 | struct dwarf2_per_cu_data *per_cu; | |
8617 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (attr), | |
8618 | cu->objfile); | |
8619 | target_cu = per_cu->cu; | |
8620 | } | |
8621 | else | |
8622 | target_cu = cu; | |
c906108c SS |
8623 | |
8624 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8625 | die = target_cu->die_ref_table[h]; |
c906108c SS |
8626 | while (die) |
8627 | { | |
8628 | if (die->offset == offset) | |
10b3939b | 8629 | return die; |
c906108c SS |
8630 | die = die->next_ref; |
8631 | } | |
10b3939b | 8632 | |
8a3fe4f8 AC |
8633 | error (_("Dwarf Error: Cannot find DIE at 0x%lx referenced from DIE " |
8634 | "at 0x%lx [in module %s]"), | |
10b3939b DJ |
8635 | (long) src_die->offset, (long) offset, cu->objfile->name); |
8636 | ||
c906108c SS |
8637 | return NULL; |
8638 | } | |
8639 | ||
8640 | static struct type * | |
e142c38c DJ |
8641 | dwarf2_fundamental_type (struct objfile *objfile, int typeid, |
8642 | struct dwarf2_cu *cu) | |
c906108c SS |
8643 | { |
8644 | if (typeid < 0 || typeid >= FT_NUM_MEMBERS) | |
8645 | { | |
8a3fe4f8 | 8646 | error (_("Dwarf Error: internal error - invalid fundamental type id %d [in module %s]"), |
659b0389 | 8647 | typeid, objfile->name); |
c906108c SS |
8648 | } |
8649 | ||
8650 | /* Look for this particular type in the fundamental type vector. If | |
8651 | one is not found, create and install one appropriate for the | |
8652 | current language and the current target machine. */ | |
8653 | ||
e142c38c | 8654 | if (cu->ftypes[typeid] == NULL) |
c906108c | 8655 | { |
e142c38c | 8656 | cu->ftypes[typeid] = cu->language_defn->la_fund_type (objfile, typeid); |
c906108c SS |
8657 | } |
8658 | ||
e142c38c | 8659 | return (cu->ftypes[typeid]); |
c906108c SS |
8660 | } |
8661 | ||
8662 | /* Decode simple location descriptions. | |
8663 | Given a pointer to a dwarf block that defines a location, compute | |
8664 | the location and return the value. | |
8665 | ||
4cecd739 DJ |
8666 | NOTE drow/2003-11-18: This function is called in two situations |
8667 | now: for the address of static or global variables (partial symbols | |
8668 | only) and for offsets into structures which are expected to be | |
8669 | (more or less) constant. The partial symbol case should go away, | |
8670 | and only the constant case should remain. That will let this | |
8671 | function complain more accurately. A few special modes are allowed | |
8672 | without complaint for global variables (for instance, global | |
8673 | register values and thread-local values). | |
c906108c SS |
8674 | |
8675 | A location description containing no operations indicates that the | |
4cecd739 | 8676 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
8677 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
8678 | callers will only want a very basic result and this can become a | |
8679 | complaint. | |
c906108c | 8680 | |
c906108c SS |
8681 | Note that stack[0] is unused except as a default error return. |
8682 | Note that stack overflow is not yet handled. */ | |
8683 | ||
8684 | static CORE_ADDR | |
e7c27a73 | 8685 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 8686 | { |
e7c27a73 DJ |
8687 | struct objfile *objfile = cu->objfile; |
8688 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
8689 | int i; |
8690 | int size = blk->size; | |
fe1b8b76 | 8691 | gdb_byte *data = blk->data; |
c906108c SS |
8692 | CORE_ADDR stack[64]; |
8693 | int stacki; | |
8694 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 8695 | gdb_byte op; |
c906108c SS |
8696 | |
8697 | i = 0; | |
8698 | stacki = 0; | |
8699 | stack[stacki] = 0; | |
c906108c SS |
8700 | |
8701 | while (i < size) | |
8702 | { | |
c906108c SS |
8703 | op = data[i++]; |
8704 | switch (op) | |
8705 | { | |
f1bea926 JM |
8706 | case DW_OP_lit0: |
8707 | case DW_OP_lit1: | |
8708 | case DW_OP_lit2: | |
8709 | case DW_OP_lit3: | |
8710 | case DW_OP_lit4: | |
8711 | case DW_OP_lit5: | |
8712 | case DW_OP_lit6: | |
8713 | case DW_OP_lit7: | |
8714 | case DW_OP_lit8: | |
8715 | case DW_OP_lit9: | |
8716 | case DW_OP_lit10: | |
8717 | case DW_OP_lit11: | |
8718 | case DW_OP_lit12: | |
8719 | case DW_OP_lit13: | |
8720 | case DW_OP_lit14: | |
8721 | case DW_OP_lit15: | |
8722 | case DW_OP_lit16: | |
8723 | case DW_OP_lit17: | |
8724 | case DW_OP_lit18: | |
8725 | case DW_OP_lit19: | |
8726 | case DW_OP_lit20: | |
8727 | case DW_OP_lit21: | |
8728 | case DW_OP_lit22: | |
8729 | case DW_OP_lit23: | |
8730 | case DW_OP_lit24: | |
8731 | case DW_OP_lit25: | |
8732 | case DW_OP_lit26: | |
8733 | case DW_OP_lit27: | |
8734 | case DW_OP_lit28: | |
8735 | case DW_OP_lit29: | |
8736 | case DW_OP_lit30: | |
8737 | case DW_OP_lit31: | |
8738 | stack[++stacki] = op - DW_OP_lit0; | |
8739 | break; | |
8740 | ||
c906108c SS |
8741 | case DW_OP_reg0: |
8742 | case DW_OP_reg1: | |
8743 | case DW_OP_reg2: | |
8744 | case DW_OP_reg3: | |
8745 | case DW_OP_reg4: | |
8746 | case DW_OP_reg5: | |
8747 | case DW_OP_reg6: | |
8748 | case DW_OP_reg7: | |
8749 | case DW_OP_reg8: | |
8750 | case DW_OP_reg9: | |
8751 | case DW_OP_reg10: | |
8752 | case DW_OP_reg11: | |
8753 | case DW_OP_reg12: | |
8754 | case DW_OP_reg13: | |
8755 | case DW_OP_reg14: | |
8756 | case DW_OP_reg15: | |
8757 | case DW_OP_reg16: | |
8758 | case DW_OP_reg17: | |
8759 | case DW_OP_reg18: | |
8760 | case DW_OP_reg19: | |
8761 | case DW_OP_reg20: | |
8762 | case DW_OP_reg21: | |
8763 | case DW_OP_reg22: | |
8764 | case DW_OP_reg23: | |
8765 | case DW_OP_reg24: | |
8766 | case DW_OP_reg25: | |
8767 | case DW_OP_reg26: | |
8768 | case DW_OP_reg27: | |
8769 | case DW_OP_reg28: | |
8770 | case DW_OP_reg29: | |
8771 | case DW_OP_reg30: | |
8772 | case DW_OP_reg31: | |
c906108c | 8773 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
8774 | if (i < size) |
8775 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
8776 | break; |
8777 | ||
8778 | case DW_OP_regx: | |
c906108c SS |
8779 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
8780 | i += bytes_read; | |
c906108c | 8781 | stack[++stacki] = unsnd; |
4cecd739 DJ |
8782 | if (i < size) |
8783 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
8784 | break; |
8785 | ||
8786 | case DW_OP_addr: | |
107d2387 | 8787 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 8788 | cu, &bytes_read); |
107d2387 | 8789 | i += bytes_read; |
c906108c SS |
8790 | break; |
8791 | ||
8792 | case DW_OP_const1u: | |
8793 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
8794 | i += 1; | |
8795 | break; | |
8796 | ||
8797 | case DW_OP_const1s: | |
8798 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
8799 | i += 1; | |
8800 | break; | |
8801 | ||
8802 | case DW_OP_const2u: | |
8803 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
8804 | i += 2; | |
8805 | break; | |
8806 | ||
8807 | case DW_OP_const2s: | |
8808 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
8809 | i += 2; | |
8810 | break; | |
8811 | ||
8812 | case DW_OP_const4u: | |
8813 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
8814 | i += 4; | |
8815 | break; | |
8816 | ||
8817 | case DW_OP_const4s: | |
8818 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
8819 | i += 4; | |
8820 | break; | |
8821 | ||
8822 | case DW_OP_constu: | |
8823 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 8824 | &bytes_read); |
c906108c SS |
8825 | i += bytes_read; |
8826 | break; | |
8827 | ||
8828 | case DW_OP_consts: | |
8829 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
8830 | i += bytes_read; | |
8831 | break; | |
8832 | ||
f1bea926 JM |
8833 | case DW_OP_dup: |
8834 | stack[stacki + 1] = stack[stacki]; | |
8835 | stacki++; | |
8836 | break; | |
8837 | ||
c906108c SS |
8838 | case DW_OP_plus: |
8839 | stack[stacki - 1] += stack[stacki]; | |
8840 | stacki--; | |
8841 | break; | |
8842 | ||
8843 | case DW_OP_plus_uconst: | |
8844 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
8845 | i += bytes_read; | |
8846 | break; | |
8847 | ||
8848 | case DW_OP_minus: | |
f1bea926 | 8849 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
8850 | stacki--; |
8851 | break; | |
8852 | ||
7a292a7a | 8853 | case DW_OP_deref: |
7a292a7a | 8854 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
8855 | this using GDB's address_class enum. This is valid for partial |
8856 | global symbols, although the variable's address will be bogus | |
8857 | in the psymtab. */ | |
7a292a7a | 8858 | if (i < size) |
4d3c2250 | 8859 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
8860 | break; |
8861 | ||
9d774e44 | 8862 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
8863 | /* The top of the stack has the offset from the beginning |
8864 | of the thread control block at which the variable is located. */ | |
8865 | /* Nothing should follow this operator, so the top of stack would | |
8866 | be returned. */ | |
4cecd739 DJ |
8867 | /* This is valid for partial global symbols, but the variable's |
8868 | address will be bogus in the psymtab. */ | |
9d774e44 | 8869 | if (i < size) |
4d3c2250 | 8870 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
8871 | break; |
8872 | ||
c906108c | 8873 | default: |
e2e0b3e5 | 8874 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
4d3c2250 | 8875 | dwarf_stack_op_name (op)); |
c906108c SS |
8876 | return (stack[stacki]); |
8877 | } | |
8878 | } | |
8879 | return (stack[stacki]); | |
8880 | } | |
8881 | ||
8882 | /* memory allocation interface */ | |
8883 | ||
c906108c | 8884 | static struct dwarf_block * |
7b5a2f43 | 8885 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
8886 | { |
8887 | struct dwarf_block *blk; | |
8888 | ||
8889 | blk = (struct dwarf_block *) | |
7b5a2f43 | 8890 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
8891 | return (blk); |
8892 | } | |
8893 | ||
8894 | static struct abbrev_info * | |
f3dd6933 | 8895 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
8896 | { |
8897 | struct abbrev_info *abbrev; | |
8898 | ||
f3dd6933 DJ |
8899 | abbrev = (struct abbrev_info *) |
8900 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
8901 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8902 | return (abbrev); | |
8903 | } | |
8904 | ||
8905 | static struct die_info * | |
fba45db2 | 8906 | dwarf_alloc_die (void) |
c906108c SS |
8907 | { |
8908 | struct die_info *die; | |
8909 | ||
8910 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
8911 | memset (die, 0, sizeof (struct die_info)); | |
8912 | return (die); | |
8913 | } | |
2e276125 JB |
8914 | |
8915 | \f | |
8916 | /* Macro support. */ | |
8917 | ||
8918 | ||
8919 | /* Return the full name of file number I in *LH's file name table. | |
8920 | Use COMP_DIR as the name of the current directory of the | |
8921 | compilation. The result is allocated using xmalloc; the caller is | |
8922 | responsible for freeing it. */ | |
8923 | static char * | |
8924 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
8925 | { | |
6a83a1e6 EZ |
8926 | /* Is the file number a valid index into the line header's file name |
8927 | table? Remember that file numbers start with one, not zero. */ | |
8928 | if (1 <= file && file <= lh->num_file_names) | |
8929 | { | |
8930 | struct file_entry *fe = &lh->file_names[file - 1]; | |
2e276125 | 8931 | |
6a83a1e6 EZ |
8932 | if (IS_ABSOLUTE_PATH (fe->name)) |
8933 | return xstrdup (fe->name); | |
8934 | else | |
8935 | { | |
8936 | const char *dir; | |
8937 | int dir_len; | |
8938 | char *full_name; | |
8939 | ||
8940 | if (fe->dir_index) | |
8941 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8942 | else | |
8943 | dir = comp_dir; | |
8944 | ||
8945 | if (dir) | |
8946 | { | |
8947 | dir_len = strlen (dir); | |
8948 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
8949 | strcpy (full_name, dir); | |
8950 | full_name[dir_len] = '/'; | |
8951 | strcpy (full_name + dir_len + 1, fe->name); | |
8952 | return full_name; | |
8953 | } | |
8954 | else | |
8955 | return xstrdup (fe->name); | |
8956 | } | |
8957 | } | |
2e276125 JB |
8958 | else |
8959 | { | |
6a83a1e6 EZ |
8960 | /* The compiler produced a bogus file number. We can at least |
8961 | record the macro definitions made in the file, even if we | |
8962 | won't be able to find the file by name. */ | |
8963 | char fake_name[80]; | |
8964 | sprintf (fake_name, "<bad macro file number %d>", file); | |
2e276125 | 8965 | |
6a83a1e6 EZ |
8966 | complaint (&symfile_complaints, |
8967 | _("bad file number in macro information (%d)"), | |
8968 | file); | |
2e276125 | 8969 | |
6a83a1e6 | 8970 | return xstrdup (fake_name); |
2e276125 JB |
8971 | } |
8972 | } | |
8973 | ||
8974 | ||
8975 | static struct macro_source_file * | |
8976 | macro_start_file (int file, int line, | |
8977 | struct macro_source_file *current_file, | |
8978 | const char *comp_dir, | |
8979 | struct line_header *lh, struct objfile *objfile) | |
8980 | { | |
8981 | /* The full name of this source file. */ | |
8982 | char *full_name = file_full_name (file, lh, comp_dir); | |
8983 | ||
8984 | /* We don't create a macro table for this compilation unit | |
8985 | at all until we actually get a filename. */ | |
8986 | if (! pending_macros) | |
4a146b47 | 8987 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 8988 | objfile->macro_cache); |
2e276125 JB |
8989 | |
8990 | if (! current_file) | |
8991 | /* If we have no current file, then this must be the start_file | |
8992 | directive for the compilation unit's main source file. */ | |
8993 | current_file = macro_set_main (pending_macros, full_name); | |
8994 | else | |
8995 | current_file = macro_include (current_file, line, full_name); | |
8996 | ||
8997 | xfree (full_name); | |
8998 | ||
8999 | return current_file; | |
9000 | } | |
9001 | ||
9002 | ||
9003 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
9004 | followed by a null byte. */ | |
9005 | static char * | |
9006 | copy_string (const char *buf, int len) | |
9007 | { | |
9008 | char *s = xmalloc (len + 1); | |
9009 | memcpy (s, buf, len); | |
9010 | s[len] = '\0'; | |
9011 | ||
9012 | return s; | |
9013 | } | |
9014 | ||
9015 | ||
9016 | static const char * | |
9017 | consume_improper_spaces (const char *p, const char *body) | |
9018 | { | |
9019 | if (*p == ' ') | |
9020 | { | |
4d3c2250 | 9021 | complaint (&symfile_complaints, |
e2e0b3e5 | 9022 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 9023 | body); |
2e276125 JB |
9024 | |
9025 | while (*p == ' ') | |
9026 | p++; | |
9027 | } | |
9028 | ||
9029 | return p; | |
9030 | } | |
9031 | ||
9032 | ||
9033 | static void | |
9034 | parse_macro_definition (struct macro_source_file *file, int line, | |
9035 | const char *body) | |
9036 | { | |
9037 | const char *p; | |
9038 | ||
9039 | /* The body string takes one of two forms. For object-like macro | |
9040 | definitions, it should be: | |
9041 | ||
9042 | <macro name> " " <definition> | |
9043 | ||
9044 | For function-like macro definitions, it should be: | |
9045 | ||
9046 | <macro name> "() " <definition> | |
9047 | or | |
9048 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
9049 | ||
9050 | Spaces may appear only where explicitly indicated, and in the | |
9051 | <definition>. | |
9052 | ||
9053 | The Dwarf 2 spec says that an object-like macro's name is always | |
9054 | followed by a space, but versions of GCC around March 2002 omit | |
9055 | the space when the macro's definition is the empty string. | |
9056 | ||
9057 | The Dwarf 2 spec says that there should be no spaces between the | |
9058 | formal arguments in a function-like macro's formal argument list, | |
9059 | but versions of GCC around March 2002 include spaces after the | |
9060 | commas. */ | |
9061 | ||
9062 | ||
9063 | /* Find the extent of the macro name. The macro name is terminated | |
9064 | by either a space or null character (for an object-like macro) or | |
9065 | an opening paren (for a function-like macro). */ | |
9066 | for (p = body; *p; p++) | |
9067 | if (*p == ' ' || *p == '(') | |
9068 | break; | |
9069 | ||
9070 | if (*p == ' ' || *p == '\0') | |
9071 | { | |
9072 | /* It's an object-like macro. */ | |
9073 | int name_len = p - body; | |
9074 | char *name = copy_string (body, name_len); | |
9075 | const char *replacement; | |
9076 | ||
9077 | if (*p == ' ') | |
9078 | replacement = body + name_len + 1; | |
9079 | else | |
9080 | { | |
4d3c2250 | 9081 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9082 | replacement = body + name_len; |
9083 | } | |
9084 | ||
9085 | macro_define_object (file, line, name, replacement); | |
9086 | ||
9087 | xfree (name); | |
9088 | } | |
9089 | else if (*p == '(') | |
9090 | { | |
9091 | /* It's a function-like macro. */ | |
9092 | char *name = copy_string (body, p - body); | |
9093 | int argc = 0; | |
9094 | int argv_size = 1; | |
9095 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
9096 | ||
9097 | p++; | |
9098 | ||
9099 | p = consume_improper_spaces (p, body); | |
9100 | ||
9101 | /* Parse the formal argument list. */ | |
9102 | while (*p && *p != ')') | |
9103 | { | |
9104 | /* Find the extent of the current argument name. */ | |
9105 | const char *arg_start = p; | |
9106 | ||
9107 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
9108 | p++; | |
9109 | ||
9110 | if (! *p || p == arg_start) | |
4d3c2250 | 9111 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9112 | else |
9113 | { | |
9114 | /* Make sure argv has room for the new argument. */ | |
9115 | if (argc >= argv_size) | |
9116 | { | |
9117 | argv_size *= 2; | |
9118 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
9119 | } | |
9120 | ||
9121 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
9122 | } | |
9123 | ||
9124 | p = consume_improper_spaces (p, body); | |
9125 | ||
9126 | /* Consume the comma, if present. */ | |
9127 | if (*p == ',') | |
9128 | { | |
9129 | p++; | |
9130 | ||
9131 | p = consume_improper_spaces (p, body); | |
9132 | } | |
9133 | } | |
9134 | ||
9135 | if (*p == ')') | |
9136 | { | |
9137 | p++; | |
9138 | ||
9139 | if (*p == ' ') | |
9140 | /* Perfectly formed definition, no complaints. */ | |
9141 | macro_define_function (file, line, name, | |
9142 | argc, (const char **) argv, | |
9143 | p + 1); | |
9144 | else if (*p == '\0') | |
9145 | { | |
9146 | /* Complain, but do define it. */ | |
4d3c2250 | 9147 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9148 | macro_define_function (file, line, name, |
9149 | argc, (const char **) argv, | |
9150 | p); | |
9151 | } | |
9152 | else | |
9153 | /* Just complain. */ | |
4d3c2250 | 9154 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9155 | } |
9156 | else | |
9157 | /* Just complain. */ | |
4d3c2250 | 9158 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9159 | |
9160 | xfree (name); | |
9161 | { | |
9162 | int i; | |
9163 | ||
9164 | for (i = 0; i < argc; i++) | |
9165 | xfree (argv[i]); | |
9166 | } | |
9167 | xfree (argv); | |
9168 | } | |
9169 | else | |
4d3c2250 | 9170 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9171 | } |
9172 | ||
9173 | ||
9174 | static void | |
9175 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
9176 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 9177 | struct dwarf2_cu *cu) |
2e276125 | 9178 | { |
fe1b8b76 | 9179 | gdb_byte *mac_ptr, *mac_end; |
2e276125 JB |
9180 | struct macro_source_file *current_file = 0; |
9181 | ||
6502dd73 | 9182 | if (dwarf2_per_objfile->macinfo_buffer == NULL) |
2e276125 | 9183 | { |
e2e0b3e5 | 9184 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
9185 | return; |
9186 | } | |
9187 | ||
6502dd73 DJ |
9188 | mac_ptr = dwarf2_per_objfile->macinfo_buffer + offset; |
9189 | mac_end = dwarf2_per_objfile->macinfo_buffer | |
9190 | + dwarf2_per_objfile->macinfo_size; | |
2e276125 JB |
9191 | |
9192 | for (;;) | |
9193 | { | |
9194 | enum dwarf_macinfo_record_type macinfo_type; | |
9195 | ||
9196 | /* Do we at least have room for a macinfo type byte? */ | |
9197 | if (mac_ptr >= mac_end) | |
9198 | { | |
4d3c2250 | 9199 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9200 | return; |
9201 | } | |
9202 | ||
9203 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
9204 | mac_ptr++; | |
9205 | ||
9206 | switch (macinfo_type) | |
9207 | { | |
9208 | /* A zero macinfo type indicates the end of the macro | |
9209 | information. */ | |
9210 | case 0: | |
9211 | return; | |
9212 | ||
9213 | case DW_MACINFO_define: | |
9214 | case DW_MACINFO_undef: | |
9215 | { | |
891d2f0b | 9216 | unsigned int bytes_read; |
2e276125 JB |
9217 | int line; |
9218 | char *body; | |
9219 | ||
9220 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9221 | mac_ptr += bytes_read; | |
9222 | body = read_string (abfd, mac_ptr, &bytes_read); | |
9223 | mac_ptr += bytes_read; | |
9224 | ||
9225 | if (! current_file) | |
4d3c2250 | 9226 | complaint (&symfile_complaints, |
e2e0b3e5 | 9227 | _("debug info gives macro %s outside of any file: %s"), |
4d3c2250 KB |
9228 | macinfo_type == |
9229 | DW_MACINFO_define ? "definition" : macinfo_type == | |
9230 | DW_MACINFO_undef ? "undefinition" : | |
9231 | "something-or-other", body); | |
2e276125 JB |
9232 | else |
9233 | { | |
9234 | if (macinfo_type == DW_MACINFO_define) | |
9235 | parse_macro_definition (current_file, line, body); | |
9236 | else if (macinfo_type == DW_MACINFO_undef) | |
9237 | macro_undef (current_file, line, body); | |
9238 | } | |
9239 | } | |
9240 | break; | |
9241 | ||
9242 | case DW_MACINFO_start_file: | |
9243 | { | |
891d2f0b | 9244 | unsigned int bytes_read; |
2e276125 JB |
9245 | int line, file; |
9246 | ||
9247 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9248 | mac_ptr += bytes_read; | |
9249 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9250 | mac_ptr += bytes_read; | |
9251 | ||
9252 | current_file = macro_start_file (file, line, | |
9253 | current_file, comp_dir, | |
e7c27a73 | 9254 | lh, cu->objfile); |
2e276125 JB |
9255 | } |
9256 | break; | |
9257 | ||
9258 | case DW_MACINFO_end_file: | |
9259 | if (! current_file) | |
4d3c2250 | 9260 | complaint (&symfile_complaints, |
e2e0b3e5 | 9261 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
9262 | else |
9263 | { | |
9264 | current_file = current_file->included_by; | |
9265 | if (! current_file) | |
9266 | { | |
9267 | enum dwarf_macinfo_record_type next_type; | |
9268 | ||
9269 | /* GCC circa March 2002 doesn't produce the zero | |
9270 | type byte marking the end of the compilation | |
9271 | unit. Complain if it's not there, but exit no | |
9272 | matter what. */ | |
9273 | ||
9274 | /* Do we at least have room for a macinfo type byte? */ | |
9275 | if (mac_ptr >= mac_end) | |
9276 | { | |
4d3c2250 | 9277 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9278 | return; |
9279 | } | |
9280 | ||
9281 | /* We don't increment mac_ptr here, so this is just | |
9282 | a look-ahead. */ | |
9283 | next_type = read_1_byte (abfd, mac_ptr); | |
9284 | if (next_type != 0) | |
4d3c2250 | 9285 | complaint (&symfile_complaints, |
e2e0b3e5 | 9286 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
9287 | |
9288 | return; | |
9289 | } | |
9290 | } | |
9291 | break; | |
9292 | ||
9293 | case DW_MACINFO_vendor_ext: | |
9294 | { | |
891d2f0b | 9295 | unsigned int bytes_read; |
2e276125 JB |
9296 | int constant; |
9297 | char *string; | |
9298 | ||
9299 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9300 | mac_ptr += bytes_read; | |
9301 | string = read_string (abfd, mac_ptr, &bytes_read); | |
9302 | mac_ptr += bytes_read; | |
9303 | ||
9304 | /* We don't recognize any vendor extensions. */ | |
9305 | } | |
9306 | break; | |
9307 | } | |
9308 | } | |
9309 | } | |
8e19ed76 PS |
9310 | |
9311 | /* Check if the attribute's form is a DW_FORM_block* | |
9312 | if so return true else false. */ | |
9313 | static int | |
9314 | attr_form_is_block (struct attribute *attr) | |
9315 | { | |
9316 | return (attr == NULL ? 0 : | |
9317 | attr->form == DW_FORM_block1 | |
9318 | || attr->form == DW_FORM_block2 | |
9319 | || attr->form == DW_FORM_block4 | |
9320 | || attr->form == DW_FORM_block); | |
9321 | } | |
4c2df51b DJ |
9322 | |
9323 | static void | |
9324 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 9325 | struct dwarf2_cu *cu) |
4c2df51b | 9326 | { |
0d53c4c4 | 9327 | if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) |
4c2df51b | 9328 | { |
0d53c4c4 | 9329 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 9330 | |
4a146b47 | 9331 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9332 | sizeof (struct dwarf2_loclist_baton)); |
e7c27a73 | 9333 | baton->objfile = cu->objfile; |
4c2df51b | 9334 | |
0d53c4c4 DJ |
9335 | /* We don't know how long the location list is, but make sure we |
9336 | don't run off the edge of the section. */ | |
6502dd73 DJ |
9337 | baton->size = dwarf2_per_objfile->loc_size - DW_UNSND (attr); |
9338 | baton->data = dwarf2_per_objfile->loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
9339 | baton->base_address = cu->header.base_address; |
9340 | if (cu->header.base_known == 0) | |
0d53c4c4 | 9341 | complaint (&symfile_complaints, |
e2e0b3e5 | 9342 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 9343 | |
a67af2b9 | 9344 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
9345 | SYMBOL_LOCATION_BATON (sym) = baton; |
9346 | } | |
9347 | else | |
9348 | { | |
9349 | struct dwarf2_locexpr_baton *baton; | |
9350 | ||
4a146b47 | 9351 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9352 | sizeof (struct dwarf2_locexpr_baton)); |
e7c27a73 | 9353 | baton->objfile = cu->objfile; |
0d53c4c4 DJ |
9354 | |
9355 | if (attr_form_is_block (attr)) | |
9356 | { | |
9357 | /* Note that we're just copying the block's data pointer | |
9358 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
9359 | info_buffer for SYM's objfile; right now we never release |
9360 | that buffer, but when we do clean up properly this may | |
9361 | need to change. */ | |
0d53c4c4 DJ |
9362 | baton->size = DW_BLOCK (attr)->size; |
9363 | baton->data = DW_BLOCK (attr)->data; | |
9364 | } | |
9365 | else | |
9366 | { | |
9367 | dwarf2_invalid_attrib_class_complaint ("location description", | |
9368 | SYMBOL_NATURAL_NAME (sym)); | |
9369 | baton->size = 0; | |
9370 | baton->data = NULL; | |
9371 | } | |
9372 | ||
a67af2b9 | 9373 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
9374 | SYMBOL_LOCATION_BATON (sym) = baton; |
9375 | } | |
4c2df51b | 9376 | } |
6502dd73 | 9377 | |
ae038cb0 | 9378 | /* Locate the compilation unit from CU's objfile which contains the |
10b3939b | 9379 | DIE at OFFSET. Raises an error on failure. */ |
ae038cb0 DJ |
9380 | |
9381 | static struct dwarf2_per_cu_data * | |
9382 | dwarf2_find_containing_comp_unit (unsigned long offset, | |
9383 | struct objfile *objfile) | |
9384 | { | |
9385 | struct dwarf2_per_cu_data *this_cu; | |
9386 | int low, high; | |
9387 | ||
ae038cb0 DJ |
9388 | low = 0; |
9389 | high = dwarf2_per_objfile->n_comp_units - 1; | |
9390 | while (high > low) | |
9391 | { | |
9392 | int mid = low + (high - low) / 2; | |
9393 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) | |
9394 | high = mid; | |
9395 | else | |
9396 | low = mid + 1; | |
9397 | } | |
9398 | gdb_assert (low == high); | |
9399 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
9400 | { | |
10b3939b | 9401 | if (low == 0) |
8a3fe4f8 AC |
9402 | error (_("Dwarf Error: could not find partial DIE containing " |
9403 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
9404 | (long) offset, bfd_get_filename (objfile->obfd)); |
9405 | ||
ae038cb0 DJ |
9406 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
9407 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
9408 | } | |
9409 | else | |
9410 | { | |
9411 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
9412 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9413 | && offset >= this_cu->offset + this_cu->length) | |
8a3fe4f8 | 9414 | error (_("invalid dwarf2 offset %ld"), offset); |
ae038cb0 DJ |
9415 | gdb_assert (offset < this_cu->offset + this_cu->length); |
9416 | return this_cu; | |
9417 | } | |
9418 | } | |
9419 | ||
10b3939b DJ |
9420 | /* Locate the compilation unit from OBJFILE which is located at exactly |
9421 | OFFSET. Raises an error on failure. */ | |
9422 | ||
ae038cb0 DJ |
9423 | static struct dwarf2_per_cu_data * |
9424 | dwarf2_find_comp_unit (unsigned long offset, struct objfile *objfile) | |
9425 | { | |
9426 | struct dwarf2_per_cu_data *this_cu; | |
9427 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
9428 | if (this_cu->offset != offset) | |
8a3fe4f8 | 9429 | error (_("no compilation unit with offset %ld."), offset); |
ae038cb0 DJ |
9430 | return this_cu; |
9431 | } | |
9432 | ||
9433 | /* Release one cached compilation unit, CU. We unlink it from the tree | |
9434 | of compilation units, but we don't remove it from the read_in_chain; | |
9435 | the caller is responsible for that. */ | |
9436 | ||
9437 | static void | |
9438 | free_one_comp_unit (void *data) | |
9439 | { | |
9440 | struct dwarf2_cu *cu = data; | |
9441 | ||
9442 | if (cu->per_cu != NULL) | |
9443 | cu->per_cu->cu = NULL; | |
9444 | cu->per_cu = NULL; | |
9445 | ||
9446 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10b3939b DJ |
9447 | if (cu->dies) |
9448 | free_die_list (cu->dies); | |
ae038cb0 DJ |
9449 | |
9450 | xfree (cu); | |
9451 | } | |
9452 | ||
72bf9492 | 9453 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
9454 | when we're finished with it. We can't free the pointer itself, but be |
9455 | sure to unlink it from the cache. Also release any associated storage | |
9456 | and perform cache maintenance. | |
72bf9492 DJ |
9457 | |
9458 | Only used during partial symbol parsing. */ | |
9459 | ||
9460 | static void | |
9461 | free_stack_comp_unit (void *data) | |
9462 | { | |
9463 | struct dwarf2_cu *cu = data; | |
9464 | ||
9465 | obstack_free (&cu->comp_unit_obstack, NULL); | |
9466 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
9467 | |
9468 | if (cu->per_cu != NULL) | |
9469 | { | |
9470 | /* This compilation unit is on the stack in our caller, so we | |
9471 | should not xfree it. Just unlink it. */ | |
9472 | cu->per_cu->cu = NULL; | |
9473 | cu->per_cu = NULL; | |
9474 | ||
9475 | /* If we had a per-cu pointer, then we may have other compilation | |
9476 | units loaded, so age them now. */ | |
9477 | age_cached_comp_units (); | |
9478 | } | |
9479 | } | |
9480 | ||
9481 | /* Free all cached compilation units. */ | |
9482 | ||
9483 | static void | |
9484 | free_cached_comp_units (void *data) | |
9485 | { | |
9486 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9487 | ||
9488 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9489 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9490 | while (per_cu != NULL) | |
9491 | { | |
9492 | struct dwarf2_per_cu_data *next_cu; | |
9493 | ||
9494 | next_cu = per_cu->cu->read_in_chain; | |
9495 | ||
9496 | free_one_comp_unit (per_cu->cu); | |
9497 | *last_chain = next_cu; | |
9498 | ||
9499 | per_cu = next_cu; | |
9500 | } | |
9501 | } | |
9502 | ||
9503 | /* Increase the age counter on each cached compilation unit, and free | |
9504 | any that are too old. */ | |
9505 | ||
9506 | static void | |
9507 | age_cached_comp_units (void) | |
9508 | { | |
9509 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9510 | ||
9511 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
9512 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9513 | while (per_cu != NULL) | |
9514 | { | |
9515 | per_cu->cu->last_used ++; | |
9516 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
9517 | dwarf2_mark (per_cu->cu); | |
9518 | per_cu = per_cu->cu->read_in_chain; | |
9519 | } | |
9520 | ||
9521 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9522 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9523 | while (per_cu != NULL) | |
9524 | { | |
9525 | struct dwarf2_per_cu_data *next_cu; | |
9526 | ||
9527 | next_cu = per_cu->cu->read_in_chain; | |
9528 | ||
9529 | if (!per_cu->cu->mark) | |
9530 | { | |
9531 | free_one_comp_unit (per_cu->cu); | |
9532 | *last_chain = next_cu; | |
9533 | } | |
9534 | else | |
9535 | last_chain = &per_cu->cu->read_in_chain; | |
9536 | ||
9537 | per_cu = next_cu; | |
9538 | } | |
9539 | } | |
9540 | ||
9541 | /* Remove a single compilation unit from the cache. */ | |
9542 | ||
9543 | static void | |
9544 | free_one_cached_comp_unit (void *target_cu) | |
9545 | { | |
9546 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9547 | ||
9548 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9549 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9550 | while (per_cu != NULL) | |
9551 | { | |
9552 | struct dwarf2_per_cu_data *next_cu; | |
9553 | ||
9554 | next_cu = per_cu->cu->read_in_chain; | |
9555 | ||
9556 | if (per_cu->cu == target_cu) | |
9557 | { | |
9558 | free_one_comp_unit (per_cu->cu); | |
9559 | *last_chain = next_cu; | |
9560 | break; | |
9561 | } | |
9562 | else | |
9563 | last_chain = &per_cu->cu->read_in_chain; | |
9564 | ||
9565 | per_cu = next_cu; | |
9566 | } | |
9567 | } | |
9568 | ||
1c379e20 DJ |
9569 | /* A pair of DIE offset and GDB type pointer. We store these |
9570 | in a hash table separate from the DIEs, and preserve them | |
9571 | when the DIEs are flushed out of cache. */ | |
9572 | ||
9573 | struct dwarf2_offset_and_type | |
9574 | { | |
9575 | unsigned int offset; | |
9576 | struct type *type; | |
9577 | }; | |
9578 | ||
9579 | /* Hash function for a dwarf2_offset_and_type. */ | |
9580 | ||
9581 | static hashval_t | |
9582 | offset_and_type_hash (const void *item) | |
9583 | { | |
9584 | const struct dwarf2_offset_and_type *ofs = item; | |
9585 | return ofs->offset; | |
9586 | } | |
9587 | ||
9588 | /* Equality function for a dwarf2_offset_and_type. */ | |
9589 | ||
9590 | static int | |
9591 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
9592 | { | |
9593 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
9594 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9595 | return ofs_lhs->offset == ofs_rhs->offset; | |
9596 | } | |
9597 | ||
9598 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
9599 | table if necessary. */ | |
9600 | ||
9601 | static void | |
9602 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
9603 | { | |
9604 | struct dwarf2_offset_and_type **slot, ofs; | |
9605 | ||
9606 | die->type = type; | |
9607 | ||
9608 | if (cu->per_cu == NULL) | |
9609 | return; | |
9610 | ||
9611 | if (cu->per_cu->type_hash == NULL) | |
9612 | cu->per_cu->type_hash | |
9613 | = htab_create_alloc_ex (cu->header.length / 24, | |
9614 | offset_and_type_hash, | |
9615 | offset_and_type_eq, | |
9616 | NULL, | |
9617 | &cu->objfile->objfile_obstack, | |
9618 | hashtab_obstack_allocate, | |
9619 | dummy_obstack_deallocate); | |
9620 | ||
9621 | ofs.offset = die->offset; | |
9622 | ofs.type = type; | |
9623 | slot = (struct dwarf2_offset_and_type **) | |
9624 | htab_find_slot_with_hash (cu->per_cu->type_hash, &ofs, ofs.offset, INSERT); | |
9625 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); | |
9626 | **slot = ofs; | |
9627 | } | |
9628 | ||
1c379e20 DJ |
9629 | /* Find the type for DIE in TYPE_HASH, or return NULL if DIE does not |
9630 | have a saved type. */ | |
9631 | ||
9632 | static struct type * | |
9633 | get_die_type (struct die_info *die, htab_t type_hash) | |
9634 | { | |
9635 | struct dwarf2_offset_and_type *slot, ofs; | |
9636 | ||
9637 | ofs.offset = die->offset; | |
9638 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
9639 | if (slot) | |
9640 | return slot->type; | |
9641 | else | |
9642 | return NULL; | |
9643 | } | |
9644 | ||
9645 | /* Restore the types of the DIE tree starting at START_DIE from the hash | |
9646 | table saved in CU. */ | |
9647 | ||
9648 | static void | |
9649 | reset_die_and_siblings_types (struct die_info *start_die, struct dwarf2_cu *cu) | |
9650 | { | |
9651 | struct die_info *die; | |
9652 | ||
9653 | if (cu->per_cu->type_hash == NULL) | |
9654 | return; | |
9655 | ||
9656 | for (die = start_die; die != NULL; die = die->sibling) | |
9657 | { | |
9658 | die->type = get_die_type (die, cu->per_cu->type_hash); | |
9659 | if (die->child != NULL) | |
9660 | reset_die_and_siblings_types (die->child, cu); | |
9661 | } | |
9662 | } | |
9663 | ||
10b3939b DJ |
9664 | /* Set the mark field in CU and in every other compilation unit in the |
9665 | cache that we must keep because we are keeping CU. */ | |
9666 | ||
9667 | /* Add a dependence relationship from CU to REF_PER_CU. */ | |
9668 | ||
9669 | static void | |
9670 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
9671 | struct dwarf2_per_cu_data *ref_per_cu) | |
9672 | { | |
9673 | void **slot; | |
9674 | ||
9675 | if (cu->dependencies == NULL) | |
9676 | cu->dependencies | |
9677 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
9678 | NULL, &cu->comp_unit_obstack, | |
9679 | hashtab_obstack_allocate, | |
9680 | dummy_obstack_deallocate); | |
9681 | ||
9682 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
9683 | if (*slot == NULL) | |
9684 | *slot = ref_per_cu; | |
9685 | } | |
1c379e20 | 9686 | |
ae038cb0 DJ |
9687 | /* Set the mark field in CU and in every other compilation unit in the |
9688 | cache that we must keep because we are keeping CU. */ | |
9689 | ||
10b3939b DJ |
9690 | static int |
9691 | dwarf2_mark_helper (void **slot, void *data) | |
9692 | { | |
9693 | struct dwarf2_per_cu_data *per_cu; | |
9694 | ||
9695 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
9696 | if (per_cu->cu->mark) | |
9697 | return 1; | |
9698 | per_cu->cu->mark = 1; | |
9699 | ||
9700 | if (per_cu->cu->dependencies != NULL) | |
9701 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
9702 | ||
9703 | return 1; | |
9704 | } | |
9705 | ||
ae038cb0 DJ |
9706 | static void |
9707 | dwarf2_mark (struct dwarf2_cu *cu) | |
9708 | { | |
9709 | if (cu->mark) | |
9710 | return; | |
9711 | cu->mark = 1; | |
10b3939b DJ |
9712 | if (cu->dependencies != NULL) |
9713 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
9714 | } |
9715 | ||
9716 | static void | |
9717 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
9718 | { | |
9719 | while (per_cu) | |
9720 | { | |
9721 | per_cu->cu->mark = 0; | |
9722 | per_cu = per_cu->cu->read_in_chain; | |
9723 | } | |
72bf9492 DJ |
9724 | } |
9725 | ||
72bf9492 DJ |
9726 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
9727 | is its offset in .debug_info for this objfile. */ | |
9728 | ||
9729 | static hashval_t | |
9730 | partial_die_hash (const void *item) | |
9731 | { | |
9732 | const struct partial_die_info *part_die = item; | |
9733 | return part_die->offset; | |
9734 | } | |
9735 | ||
9736 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
9737 | are equal if they have the same offset. */ | |
9738 | ||
9739 | static int | |
9740 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
9741 | { | |
9742 | const struct partial_die_info *part_die_lhs = item_lhs; | |
9743 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9744 | return part_die_lhs->offset == part_die_rhs->offset; | |
9745 | } | |
9746 | ||
ae038cb0 DJ |
9747 | static struct cmd_list_element *set_dwarf2_cmdlist; |
9748 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
9749 | ||
9750 | static void | |
9751 | set_dwarf2_cmd (char *args, int from_tty) | |
9752 | { | |
9753 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
9754 | } | |
9755 | ||
9756 | static void | |
9757 | show_dwarf2_cmd (char *args, int from_tty) | |
9758 | { | |
9759 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
9760 | } | |
9761 | ||
6502dd73 DJ |
9762 | void _initialize_dwarf2_read (void); |
9763 | ||
9764 | void | |
9765 | _initialize_dwarf2_read (void) | |
9766 | { | |
9767 | dwarf2_objfile_data_key = register_objfile_data (); | |
ae038cb0 | 9768 | |
1bedd215 AC |
9769 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
9770 | Set DWARF 2 specific variables.\n\ | |
9771 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
9772 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
9773 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
9774 | ||
1bedd215 AC |
9775 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
9776 | Show DWARF 2 specific variables\n\ | |
9777 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
9778 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
9779 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
9780 | ||
9781 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
9782 | &dwarf2_max_cache_age, _("\ |
9783 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
9784 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
9785 | A higher limit means that cached compilation units will be stored\n\ | |
9786 | in memory longer, and more total memory will be used. Zero disables\n\ | |
9787 | caching, which can slow down startup."), | |
2c5b56ce | 9788 | NULL, |
920d2a44 | 9789 | show_dwarf2_max_cache_age, |
2c5b56ce | 9790 | &set_dwarf2_cmdlist, |
ae038cb0 | 9791 | &show_dwarf2_cmdlist); |
6502dd73 | 9792 | } |