Commit | Line | Data |
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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; | |
72dca2f5 FR |
183 | |
184 | /* A flag indicating wether this objfile has a section loaded at a | |
185 | VMA of 0. */ | |
186 | int has_section_at_zero; | |
6502dd73 DJ |
187 | }; |
188 | ||
189 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 190 | |
086df311 DJ |
191 | static asection *dwarf_info_section; |
192 | static asection *dwarf_abbrev_section; | |
193 | static asection *dwarf_line_section; | |
194 | static asection *dwarf_pubnames_section; | |
195 | static asection *dwarf_aranges_section; | |
196 | static asection *dwarf_loc_section; | |
197 | static asection *dwarf_macinfo_section; | |
198 | static asection *dwarf_str_section; | |
199 | static asection *dwarf_ranges_section; | |
200 | asection *dwarf_frame_section; | |
201 | asection *dwarf_eh_frame_section; | |
202 | ||
c906108c SS |
203 | /* names of the debugging sections */ |
204 | ||
205 | #define INFO_SECTION ".debug_info" | |
206 | #define ABBREV_SECTION ".debug_abbrev" | |
207 | #define LINE_SECTION ".debug_line" | |
208 | #define PUBNAMES_SECTION ".debug_pubnames" | |
209 | #define ARANGES_SECTION ".debug_aranges" | |
210 | #define LOC_SECTION ".debug_loc" | |
211 | #define MACINFO_SECTION ".debug_macinfo" | |
212 | #define STR_SECTION ".debug_str" | |
af34e669 | 213 | #define RANGES_SECTION ".debug_ranges" |
b6af0555 JS |
214 | #define FRAME_SECTION ".debug_frame" |
215 | #define EH_FRAME_SECTION ".eh_frame" | |
c906108c SS |
216 | |
217 | /* local data types */ | |
218 | ||
57349743 JB |
219 | /* We hold several abbreviation tables in memory at the same time. */ |
220 | #ifndef ABBREV_HASH_SIZE | |
221 | #define ABBREV_HASH_SIZE 121 | |
222 | #endif | |
223 | ||
107d2387 AC |
224 | /* The data in a compilation unit header, after target2host |
225 | translation, looks like this. */ | |
c906108c | 226 | struct comp_unit_head |
a738430d MK |
227 | { |
228 | unsigned long length; | |
229 | short version; | |
230 | unsigned int abbrev_offset; | |
231 | unsigned char addr_size; | |
232 | unsigned char signed_addr_p; | |
57349743 | 233 | |
a738430d MK |
234 | /* Size of file offsets; either 4 or 8. */ |
235 | unsigned int offset_size; | |
57349743 | 236 | |
a738430d MK |
237 | /* Size of the length field; either 4 or 12. */ |
238 | unsigned int initial_length_size; | |
57349743 | 239 | |
a738430d MK |
240 | /* Offset to the first byte of this compilation unit header in the |
241 | .debug_info section, for resolving relative reference dies. */ | |
242 | unsigned int offset; | |
57349743 | 243 | |
a738430d MK |
244 | /* Pointer to this compilation unit header in the .debug_info |
245 | section. */ | |
fe1b8b76 | 246 | gdb_byte *cu_head_ptr; |
57349743 | 247 | |
a738430d MK |
248 | /* Pointer to the first die of this compilation unit. This will be |
249 | the first byte following the compilation unit header. */ | |
fe1b8b76 | 250 | gdb_byte *first_die_ptr; |
af34e669 | 251 | |
a738430d MK |
252 | /* Pointer to the next compilation unit header in the program. */ |
253 | struct comp_unit_head *next; | |
0d53c4c4 | 254 | |
a738430d MK |
255 | /* Base address of this compilation unit. */ |
256 | CORE_ADDR base_address; | |
0d53c4c4 | 257 | |
a738430d MK |
258 | /* Non-zero if base_address has been set. */ |
259 | int base_known; | |
260 | }; | |
c906108c | 261 | |
10b3939b DJ |
262 | /* Fixed size for the DIE hash table. */ |
263 | #ifndef REF_HASH_SIZE | |
264 | #define REF_HASH_SIZE 1021 | |
265 | #endif | |
266 | ||
e7c27a73 DJ |
267 | /* Internal state when decoding a particular compilation unit. */ |
268 | struct dwarf2_cu | |
269 | { | |
270 | /* The objfile containing this compilation unit. */ | |
271 | struct objfile *objfile; | |
272 | ||
273 | /* The header of the compilation unit. | |
274 | ||
275 | FIXME drow/2003-11-10: Some of the things from the comp_unit_head | |
f3dd6933 | 276 | should logically be moved to the dwarf2_cu structure. */ |
e7c27a73 | 277 | struct comp_unit_head header; |
e142c38c DJ |
278 | |
279 | struct function_range *first_fn, *last_fn, *cached_fn; | |
280 | ||
281 | /* The language we are debugging. */ | |
282 | enum language language; | |
283 | const struct language_defn *language_defn; | |
284 | ||
b0f35d58 DL |
285 | const char *producer; |
286 | ||
e142c38c DJ |
287 | /* The generic symbol table building routines have separate lists for |
288 | file scope symbols and all all other scopes (local scopes). So | |
289 | we need to select the right one to pass to add_symbol_to_list(). | |
290 | We do it by keeping a pointer to the correct list in list_in_scope. | |
291 | ||
292 | FIXME: The original dwarf code just treated the file scope as the | |
293 | first local scope, and all other local scopes as nested local | |
294 | scopes, and worked fine. Check to see if we really need to | |
295 | distinguish these in buildsym.c. */ | |
296 | struct pending **list_in_scope; | |
297 | ||
298 | /* Maintain an array of referenced fundamental types for the current | |
299 | compilation unit being read. For DWARF version 1, we have to construct | |
300 | the fundamental types on the fly, since no information about the | |
301 | fundamental types is supplied. Each such fundamental type is created by | |
302 | calling a language dependent routine to create the type, and then a | |
303 | pointer to that type is then placed in the array at the index specified | |
304 | by it's FT_<TYPENAME> value. The array has a fixed size set by the | |
305 | FT_NUM_MEMBERS compile time constant, which is the number of predefined | |
306 | fundamental types gdb knows how to construct. */ | |
307 | struct type *ftypes[FT_NUM_MEMBERS]; /* Fundamental types */ | |
f3dd6933 DJ |
308 | |
309 | /* DWARF abbreviation table associated with this compilation unit. */ | |
310 | struct abbrev_info **dwarf2_abbrevs; | |
311 | ||
312 | /* Storage for the abbrev table. */ | |
313 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
314 | |
315 | /* Hash table holding all the loaded partial DIEs. */ | |
316 | htab_t partial_dies; | |
317 | ||
318 | /* Storage for things with the same lifetime as this read-in compilation | |
319 | unit, including partial DIEs. */ | |
320 | struct obstack comp_unit_obstack; | |
321 | ||
ae038cb0 DJ |
322 | /* When multiple dwarf2_cu structures are living in memory, this field |
323 | chains them all together, so that they can be released efficiently. | |
324 | We will probably also want a generation counter so that most-recently-used | |
325 | compilation units are cached... */ | |
326 | struct dwarf2_per_cu_data *read_in_chain; | |
327 | ||
328 | /* Backchain to our per_cu entry if the tree has been built. */ | |
329 | struct dwarf2_per_cu_data *per_cu; | |
330 | ||
331 | /* How many compilation units ago was this CU last referenced? */ | |
332 | int last_used; | |
333 | ||
10b3939b DJ |
334 | /* A hash table of die offsets for following references. */ |
335 | struct die_info *die_ref_table[REF_HASH_SIZE]; | |
336 | ||
337 | /* Full DIEs if read in. */ | |
338 | struct die_info *dies; | |
339 | ||
340 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
341 | units referenced by this one. Only set during full symbol processing; | |
342 | partial symbol tables do not have dependencies. */ | |
343 | htab_t dependencies; | |
344 | ||
ae038cb0 DJ |
345 | /* Mark used when releasing cached dies. */ |
346 | unsigned int mark : 1; | |
347 | ||
348 | /* This flag will be set if this compilation unit might include | |
349 | inter-compilation-unit references. */ | |
350 | unsigned int has_form_ref_addr : 1; | |
351 | ||
72bf9492 DJ |
352 | /* This flag will be set if this compilation unit includes any |
353 | DW_TAG_namespace DIEs. If we know that there are explicit | |
354 | DIEs for namespaces, we don't need to try to infer them | |
355 | from mangled names. */ | |
356 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
357 | }; |
358 | ||
10b3939b DJ |
359 | /* Persistent data held for a compilation unit, even when not |
360 | processing it. We put a pointer to this structure in the | |
361 | read_symtab_private field of the psymtab. If we encounter | |
362 | inter-compilation-unit references, we also maintain a sorted | |
363 | list of all compilation units. */ | |
364 | ||
ae038cb0 DJ |
365 | struct dwarf2_per_cu_data |
366 | { | |
5afb4e99 | 367 | /* The start offset and length of this compilation unit. 2**30-1 |
ae038cb0 DJ |
368 | bytes should suffice to store the length of any compilation unit |
369 | - if it doesn't, GDB will fall over anyway. */ | |
370 | unsigned long offset; | |
5afb4e99 | 371 | unsigned long length : 30; |
ae038cb0 DJ |
372 | |
373 | /* Flag indicating this compilation unit will be read in before | |
374 | any of the current compilation units are processed. */ | |
375 | unsigned long queued : 1; | |
376 | ||
5afb4e99 DJ |
377 | /* This flag will be set if we need to load absolutely all DIEs |
378 | for this compilation unit, instead of just the ones we think | |
379 | are interesting. It gets set if we look for a DIE in the | |
380 | hash table and don't find it. */ | |
381 | unsigned int load_all_dies : 1; | |
382 | ||
ae038cb0 DJ |
383 | /* Set iff currently read in. */ |
384 | struct dwarf2_cu *cu; | |
1c379e20 DJ |
385 | |
386 | /* If full symbols for this CU have been read in, then this field | |
387 | holds a map of DIE offsets to types. It isn't always possible | |
388 | to reconstruct this information later, so we have to preserve | |
389 | it. */ | |
1c379e20 | 390 | htab_t type_hash; |
10b3939b | 391 | |
31ffec48 DJ |
392 | /* The partial symbol table associated with this compilation unit, |
393 | or NULL for partial units (which do not have an associated | |
394 | symtab). */ | |
10b3939b | 395 | struct partial_symtab *psymtab; |
ae038cb0 DJ |
396 | }; |
397 | ||
debd256d JB |
398 | /* The line number information for a compilation unit (found in the |
399 | .debug_line section) begins with a "statement program header", | |
400 | which contains the following information. */ | |
401 | struct line_header | |
402 | { | |
403 | unsigned int total_length; | |
404 | unsigned short version; | |
405 | unsigned int header_length; | |
406 | unsigned char minimum_instruction_length; | |
407 | unsigned char default_is_stmt; | |
408 | int line_base; | |
409 | unsigned char line_range; | |
410 | unsigned char opcode_base; | |
411 | ||
412 | /* standard_opcode_lengths[i] is the number of operands for the | |
413 | standard opcode whose value is i. This means that | |
414 | standard_opcode_lengths[0] is unused, and the last meaningful | |
415 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
416 | unsigned char *standard_opcode_lengths; | |
417 | ||
418 | /* The include_directories table. NOTE! These strings are not | |
419 | allocated with xmalloc; instead, they are pointers into | |
420 | debug_line_buffer. If you try to free them, `free' will get | |
421 | indigestion. */ | |
422 | unsigned int num_include_dirs, include_dirs_size; | |
423 | char **include_dirs; | |
424 | ||
425 | /* The file_names table. NOTE! These strings are not allocated | |
426 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
427 | Don't try to free them directly. */ | |
428 | unsigned int num_file_names, file_names_size; | |
429 | struct file_entry | |
c906108c | 430 | { |
debd256d JB |
431 | char *name; |
432 | unsigned int dir_index; | |
433 | unsigned int mod_time; | |
434 | unsigned int length; | |
aaa75496 | 435 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
debd256d JB |
436 | } *file_names; |
437 | ||
438 | /* The start and end of the statement program following this | |
6502dd73 | 439 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 440 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 441 | }; |
c906108c SS |
442 | |
443 | /* When we construct a partial symbol table entry we only | |
444 | need this much information. */ | |
445 | struct partial_die_info | |
446 | { | |
72bf9492 | 447 | /* Offset of this DIE. */ |
c906108c | 448 | unsigned int offset; |
72bf9492 DJ |
449 | |
450 | /* DWARF-2 tag for this DIE. */ | |
451 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
452 | ||
453 | /* Language code associated with this DIE. This is only used | |
454 | for the compilation unit DIE. */ | |
455 | unsigned int language : 8; | |
456 | ||
457 | /* Assorted flags describing the data found in this DIE. */ | |
458 | unsigned int has_children : 1; | |
459 | unsigned int is_external : 1; | |
460 | unsigned int is_declaration : 1; | |
461 | unsigned int has_type : 1; | |
462 | unsigned int has_specification : 1; | |
aaa75496 | 463 | unsigned int has_stmt_list : 1; |
72bf9492 DJ |
464 | unsigned int has_pc_info : 1; |
465 | ||
466 | /* Flag set if the SCOPE field of this structure has been | |
467 | computed. */ | |
468 | unsigned int scope_set : 1; | |
469 | ||
470 | /* The name of this DIE. Normally the value of DW_AT_name, but | |
471 | sometimes DW_TAG_MIPS_linkage_name or a string computed in some | |
472 | other fashion. */ | |
c906108c | 473 | char *name; |
57c22c6c | 474 | char *dirname; |
72bf9492 DJ |
475 | |
476 | /* The scope to prepend to our children. This is generally | |
477 | allocated on the comp_unit_obstack, so will disappear | |
478 | when this compilation unit leaves the cache. */ | |
479 | char *scope; | |
480 | ||
481 | /* The location description associated with this DIE, if any. */ | |
482 | struct dwarf_block *locdesc; | |
483 | ||
484 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
485 | CORE_ADDR lowpc; |
486 | CORE_ADDR highpc; | |
72bf9492 DJ |
487 | |
488 | /* Pointer into the info_buffer pointing at the target of | |
489 | DW_AT_sibling, if any. */ | |
fe1b8b76 | 490 | gdb_byte *sibling; |
72bf9492 DJ |
491 | |
492 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
493 | DW_AT_specification (or DW_AT_abstract_origin or | |
494 | DW_AT_extension). */ | |
495 | unsigned int spec_offset; | |
496 | ||
aaa75496 JB |
497 | /* If HAS_STMT_LIST, the offset of the Line Number Information data. */ |
498 | unsigned int line_offset; | |
499 | ||
72bf9492 DJ |
500 | /* Pointers to this DIE's parent, first child, and next sibling, |
501 | if any. */ | |
502 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
503 | }; |
504 | ||
505 | /* This data structure holds the information of an abbrev. */ | |
506 | struct abbrev_info | |
507 | { | |
508 | unsigned int number; /* number identifying abbrev */ | |
509 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
510 | unsigned short has_children; /* boolean */ |
511 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
512 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
513 | struct abbrev_info *next; /* next in chain */ | |
514 | }; | |
515 | ||
516 | struct attr_abbrev | |
517 | { | |
518 | enum dwarf_attribute name; | |
519 | enum dwarf_form form; | |
520 | }; | |
521 | ||
522 | /* This data structure holds a complete die structure. */ | |
523 | struct die_info | |
524 | { | |
c5aa993b | 525 | enum dwarf_tag tag; /* Tag indicating type of die */ |
c5aa993b JM |
526 | unsigned int abbrev; /* Abbrev number */ |
527 | unsigned int offset; /* Offset in .debug_info section */ | |
528 | unsigned int num_attrs; /* Number of attributes */ | |
529 | struct attribute *attrs; /* An array of attributes */ | |
530 | struct die_info *next_ref; /* Next die in ref hash table */ | |
78ba4af6 JB |
531 | |
532 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
533 | points to this die's parent; CHILD points to the first child of | |
534 | this node; and all the children of a given node are chained | |
535 | together via their SIBLING fields, terminated by a die whose | |
536 | tag is zero. */ | |
639d11d3 DC |
537 | struct die_info *child; /* Its first child, if any. */ |
538 | struct die_info *sibling; /* Its next sibling, if any. */ | |
539 | struct die_info *parent; /* Its parent, if any. */ | |
78ba4af6 | 540 | |
c5aa993b | 541 | struct type *type; /* Cached type information */ |
c906108c SS |
542 | }; |
543 | ||
544 | /* Attributes have a name and a value */ | |
545 | struct attribute | |
546 | { | |
547 | enum dwarf_attribute name; | |
548 | enum dwarf_form form; | |
549 | union | |
550 | { | |
551 | char *str; | |
552 | struct dwarf_block *blk; | |
ce5d95e1 JB |
553 | unsigned long unsnd; |
554 | long int snd; | |
c906108c SS |
555 | CORE_ADDR addr; |
556 | } | |
557 | u; | |
558 | }; | |
559 | ||
5fb290d7 DJ |
560 | struct function_range |
561 | { | |
562 | const char *name; | |
563 | CORE_ADDR lowpc, highpc; | |
564 | int seen_line; | |
565 | struct function_range *next; | |
566 | }; | |
567 | ||
c906108c SS |
568 | /* Get at parts of an attribute structure */ |
569 | ||
570 | #define DW_STRING(attr) ((attr)->u.str) | |
571 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
572 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
573 | #define DW_SND(attr) ((attr)->u.snd) | |
574 | #define DW_ADDR(attr) ((attr)->u.addr) | |
575 | ||
576 | /* Blocks are a bunch of untyped bytes. */ | |
577 | struct dwarf_block | |
578 | { | |
579 | unsigned int size; | |
fe1b8b76 | 580 | gdb_byte *data; |
c906108c SS |
581 | }; |
582 | ||
c906108c SS |
583 | #ifndef ATTR_ALLOC_CHUNK |
584 | #define ATTR_ALLOC_CHUNK 4 | |
585 | #endif | |
586 | ||
c906108c SS |
587 | /* Allocate fields for structs, unions and enums in this size. */ |
588 | #ifndef DW_FIELD_ALLOC_CHUNK | |
589 | #define DW_FIELD_ALLOC_CHUNK 4 | |
590 | #endif | |
591 | ||
c906108c SS |
592 | /* A zeroed version of a partial die for initialization purposes. */ |
593 | static struct partial_die_info zeroed_partial_die; | |
594 | ||
c906108c SS |
595 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
596 | but this would require a corresponding change in unpack_field_as_long | |
597 | and friends. */ | |
598 | static int bits_per_byte = 8; | |
599 | ||
600 | /* The routines that read and process dies for a C struct or C++ class | |
601 | pass lists of data member fields and lists of member function fields | |
602 | in an instance of a field_info structure, as defined below. */ | |
603 | struct field_info | |
c5aa993b JM |
604 | { |
605 | /* List of data member and baseclasses fields. */ | |
606 | struct nextfield | |
607 | { | |
608 | struct nextfield *next; | |
609 | int accessibility; | |
610 | int virtuality; | |
611 | struct field field; | |
612 | } | |
613 | *fields; | |
c906108c | 614 | |
c5aa993b JM |
615 | /* Number of fields. */ |
616 | int nfields; | |
c906108c | 617 | |
c5aa993b JM |
618 | /* Number of baseclasses. */ |
619 | int nbaseclasses; | |
c906108c | 620 | |
c5aa993b JM |
621 | /* Set if the accesibility of one of the fields is not public. */ |
622 | int non_public_fields; | |
c906108c | 623 | |
c5aa993b JM |
624 | /* Member function fields array, entries are allocated in the order they |
625 | are encountered in the object file. */ | |
626 | struct nextfnfield | |
627 | { | |
628 | struct nextfnfield *next; | |
629 | struct fn_field fnfield; | |
630 | } | |
631 | *fnfields; | |
c906108c | 632 | |
c5aa993b JM |
633 | /* Member function fieldlist array, contains name of possibly overloaded |
634 | member function, number of overloaded member functions and a pointer | |
635 | to the head of the member function field chain. */ | |
636 | struct fnfieldlist | |
637 | { | |
638 | char *name; | |
639 | int length; | |
640 | struct nextfnfield *head; | |
641 | } | |
642 | *fnfieldlists; | |
c906108c | 643 | |
c5aa993b JM |
644 | /* Number of entries in the fnfieldlists array. */ |
645 | int nfnfields; | |
646 | }; | |
c906108c | 647 | |
10b3939b DJ |
648 | /* One item on the queue of compilation units to read in full symbols |
649 | for. */ | |
650 | struct dwarf2_queue_item | |
651 | { | |
652 | struct dwarf2_per_cu_data *per_cu; | |
653 | struct dwarf2_queue_item *next; | |
654 | }; | |
655 | ||
656 | /* The current queue. */ | |
657 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
658 | ||
ae038cb0 DJ |
659 | /* Loaded secondary compilation units are kept in memory until they |
660 | have not been referenced for the processing of this many | |
661 | compilation units. Set this to zero to disable caching. Cache | |
662 | sizes of up to at least twenty will improve startup time for | |
663 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
664 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
665 | static void |
666 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
667 | struct cmd_list_element *c, const char *value) | |
668 | { | |
669 | fprintf_filtered (file, _("\ | |
670 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
671 | value); | |
672 | } | |
673 | ||
ae038cb0 | 674 | |
c906108c SS |
675 | /* Various complaints about symbol reading that don't abort the process */ |
676 | ||
4d3c2250 KB |
677 | static void |
678 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 679 | { |
4d3c2250 | 680 | complaint (&symfile_complaints, |
e2e0b3e5 | 681 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
682 | } |
683 | ||
684 | static void | |
685 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 686 | { |
e2e0b3e5 | 687 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
688 | } |
689 | ||
4d3c2250 KB |
690 | static void |
691 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
692 | int arg3) | |
2e276125 | 693 | { |
4d3c2250 | 694 | complaint (&symfile_complaints, |
e2e0b3e5 | 695 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
696 | arg2, arg3); |
697 | } | |
698 | ||
699 | static void | |
700 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 701 | { |
4d3c2250 | 702 | complaint (&symfile_complaints, |
e2e0b3e5 | 703 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
704 | } |
705 | ||
706 | static void | |
707 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 708 | { |
4d3c2250 | 709 | complaint (&symfile_complaints, |
e2e0b3e5 | 710 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
711 | arg1); |
712 | } | |
713 | ||
714 | static void | |
715 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 716 | { |
4d3c2250 | 717 | complaint (&symfile_complaints, |
e2e0b3e5 | 718 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 719 | } |
c906108c | 720 | |
c906108c SS |
721 | /* local function prototypes */ |
722 | ||
4efb68b1 | 723 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
724 | |
725 | #if 0 | |
a14ed312 | 726 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
727 | #endif |
728 | ||
aaa75496 JB |
729 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
730 | struct objfile *); | |
731 | ||
732 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
733 | struct partial_die_info *, | |
734 | struct partial_symtab *); | |
735 | ||
a14ed312 | 736 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 737 | |
72bf9492 DJ |
738 | static void scan_partial_symbols (struct partial_die_info *, |
739 | CORE_ADDR *, CORE_ADDR *, | |
740 | struct dwarf2_cu *); | |
c906108c | 741 | |
72bf9492 DJ |
742 | static void add_partial_symbol (struct partial_die_info *, |
743 | struct dwarf2_cu *); | |
63d06c5c | 744 | |
72bf9492 | 745 | static int pdi_needs_namespace (enum dwarf_tag tag); |
91c24f0a | 746 | |
72bf9492 DJ |
747 | static void add_partial_namespace (struct partial_die_info *pdi, |
748 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
749 | struct dwarf2_cu *cu); | |
63d06c5c | 750 | |
72bf9492 DJ |
751 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
752 | struct dwarf2_cu *cu); | |
91c24f0a | 753 | |
fe1b8b76 JB |
754 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
755 | gdb_byte *info_ptr, | |
756 | bfd *abfd, | |
757 | struct dwarf2_cu *cu); | |
91c24f0a | 758 | |
a14ed312 | 759 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 760 | |
a14ed312 | 761 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 762 | |
fe1b8b76 | 763 | gdb_byte *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 764 | |
e7c27a73 | 765 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 766 | |
f3dd6933 | 767 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 768 | |
fe1b8b76 | 769 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 770 | struct dwarf2_cu *); |
72bf9492 | 771 | |
57349743 | 772 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 773 | struct dwarf2_cu *); |
c906108c | 774 | |
fe1b8b76 | 775 | static struct partial_die_info *load_partial_dies (bfd *, gdb_byte *, int, |
72bf9492 DJ |
776 | struct dwarf2_cu *); |
777 | ||
fe1b8b76 JB |
778 | static gdb_byte *read_partial_die (struct partial_die_info *, |
779 | struct abbrev_info *abbrev, unsigned int, | |
780 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 781 | |
72bf9492 | 782 | static struct partial_die_info *find_partial_die (unsigned long, |
10b3939b | 783 | struct dwarf2_cu *); |
72bf9492 DJ |
784 | |
785 | static void fixup_partial_die (struct partial_die_info *, | |
786 | struct dwarf2_cu *); | |
787 | ||
fe1b8b76 JB |
788 | static gdb_byte *read_full_die (struct die_info **, bfd *, gdb_byte *, |
789 | struct dwarf2_cu *, int *); | |
c906108c | 790 | |
fe1b8b76 JB |
791 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
792 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 793 | |
fe1b8b76 JB |
794 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
795 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 796 | |
fe1b8b76 | 797 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 798 | |
fe1b8b76 | 799 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 800 | |
fe1b8b76 | 801 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 802 | |
fe1b8b76 | 803 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 804 | |
fe1b8b76 | 805 | static unsigned long read_8_bytes (bfd *, gdb_byte *); |
c906108c | 806 | |
fe1b8b76 | 807 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 808 | unsigned int *); |
c906108c | 809 | |
fe1b8b76 | 810 | static LONGEST read_initial_length (bfd *, gdb_byte *, |
891d2f0b | 811 | struct comp_unit_head *, unsigned int *); |
613e1657 | 812 | |
fe1b8b76 | 813 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
891d2f0b | 814 | unsigned int *); |
613e1657 | 815 | |
fe1b8b76 | 816 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 817 | |
fe1b8b76 | 818 | static char *read_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 819 | |
fe1b8b76 JB |
820 | static char *read_indirect_string (bfd *, gdb_byte *, |
821 | const struct comp_unit_head *, | |
822 | unsigned int *); | |
4bdf3d34 | 823 | |
fe1b8b76 | 824 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 825 | |
fe1b8b76 | 826 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 827 | |
fe1b8b76 | 828 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 829 | |
e142c38c | 830 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 831 | |
e142c38c DJ |
832 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
833 | struct dwarf2_cu *); | |
c906108c | 834 | |
05cf31d1 JB |
835 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
836 | struct dwarf2_cu *cu); | |
837 | ||
e142c38c | 838 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 839 | |
e142c38c DJ |
840 | static struct die_info *die_specification (struct die_info *die, |
841 | struct dwarf2_cu *); | |
63d06c5c | 842 | |
debd256d JB |
843 | static void free_line_header (struct line_header *lh); |
844 | ||
aaa75496 JB |
845 | static void add_file_name (struct line_header *, char *, unsigned int, |
846 | unsigned int, unsigned int); | |
847 | ||
debd256d JB |
848 | static struct line_header *(dwarf_decode_line_header |
849 | (unsigned int offset, | |
e7c27a73 | 850 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
851 | |
852 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 853 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 854 | |
4f1520fb | 855 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 856 | |
a14ed312 | 857 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 858 | struct dwarf2_cu *); |
c906108c | 859 | |
a14ed312 | 860 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 861 | struct dwarf2_cu *); |
c906108c | 862 | |
2df3850c JM |
863 | static void dwarf2_const_value_data (struct attribute *attr, |
864 | struct symbol *sym, | |
865 | int bits); | |
866 | ||
e7c27a73 | 867 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 868 | |
e7c27a73 DJ |
869 | static struct type *die_containing_type (struct die_info *, |
870 | struct dwarf2_cu *); | |
c906108c | 871 | |
e7c27a73 | 872 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 873 | |
e7c27a73 | 874 | static void read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 875 | |
086ed43d | 876 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 877 | |
fe1b8b76 JB |
878 | static char *typename_concat (struct obstack *, |
879 | const char *prefix, | |
880 | const char *suffix, | |
987504bb | 881 | struct dwarf2_cu *); |
63d06c5c | 882 | |
e7c27a73 | 883 | static void read_typedef (struct die_info *, struct dwarf2_cu *); |
c906108c | 884 | |
e7c27a73 | 885 | static void read_base_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 886 | |
a02abb62 JB |
887 | static void read_subrange_type (struct die_info *die, struct dwarf2_cu *cu); |
888 | ||
e7c27a73 | 889 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 890 | |
e7c27a73 | 891 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 892 | |
e7c27a73 | 893 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 894 | |
a14ed312 | 895 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 896 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 897 | |
fae299cd DC |
898 | static void get_scope_pc_bounds (struct die_info *, |
899 | CORE_ADDR *, CORE_ADDR *, | |
900 | struct dwarf2_cu *); | |
901 | ||
a14ed312 | 902 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 903 | struct dwarf2_cu *); |
c906108c | 904 | |
a14ed312 | 905 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 906 | struct type *, struct dwarf2_cu *); |
c906108c | 907 | |
a14ed312 | 908 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 909 | struct die_info *, struct type *, |
e7c27a73 | 910 | struct dwarf2_cu *); |
c906108c | 911 | |
a14ed312 | 912 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 913 | struct type *, struct dwarf2_cu *); |
c906108c | 914 | |
134d01f1 DJ |
915 | static void read_structure_type (struct die_info *, struct dwarf2_cu *); |
916 | ||
917 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 918 | |
8176b9b8 DC |
919 | static char *determine_class_name (struct die_info *die, struct dwarf2_cu *cu); |
920 | ||
e7c27a73 | 921 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 922 | |
e7c27a73 | 923 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 924 | |
38d518c9 | 925 | static const char *namespace_name (struct die_info *die, |
e142c38c | 926 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 927 | |
134d01f1 DJ |
928 | static void read_enumeration_type (struct die_info *, struct dwarf2_cu *); |
929 | ||
930 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 931 | |
e7c27a73 | 932 | static struct type *dwarf_base_type (int, int, struct dwarf2_cu *); |
c906108c | 933 | |
e7c27a73 | 934 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 935 | |
e7c27a73 | 936 | static void read_array_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 937 | |
7ca2d3a3 DL |
938 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
939 | struct dwarf2_cu *); | |
940 | ||
e7c27a73 | 941 | static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 942 | |
e7c27a73 DJ |
943 | static void read_tag_ptr_to_member_type (struct die_info *, |
944 | struct dwarf2_cu *); | |
c906108c | 945 | |
e7c27a73 | 946 | static void read_tag_reference_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 947 | |
e7c27a73 | 948 | static void read_tag_const_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 949 | |
e7c27a73 | 950 | static void read_tag_volatile_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 951 | |
e7c27a73 | 952 | static void read_tag_string_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 953 | |
e7c27a73 | 954 | static void read_subroutine_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 955 | |
fe1b8b76 | 956 | static struct die_info *read_comp_unit (gdb_byte *, bfd *, struct dwarf2_cu *); |
c906108c | 957 | |
fe1b8b76 | 958 | static struct die_info *read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 959 | struct dwarf2_cu *, |
fe1b8b76 | 960 | gdb_byte **new_info_ptr, |
639d11d3 DC |
961 | struct die_info *parent); |
962 | ||
fe1b8b76 | 963 | static struct die_info *read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 964 | struct dwarf2_cu *, |
fe1b8b76 | 965 | gdb_byte **new_info_ptr, |
639d11d3 DC |
966 | struct die_info *parent); |
967 | ||
a14ed312 | 968 | static void free_die_list (struct die_info *); |
c906108c | 969 | |
e7c27a73 | 970 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 971 | |
e142c38c | 972 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 973 | |
e142c38c | 974 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 975 | |
e142c38c DJ |
976 | static struct die_info *dwarf2_extension (struct die_info *die, |
977 | struct dwarf2_cu *); | |
9219021c | 978 | |
a14ed312 | 979 | static char *dwarf_tag_name (unsigned int); |
c906108c | 980 | |
a14ed312 | 981 | static char *dwarf_attr_name (unsigned int); |
c906108c | 982 | |
a14ed312 | 983 | static char *dwarf_form_name (unsigned int); |
c906108c | 984 | |
a14ed312 | 985 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 986 | |
a14ed312 | 987 | static char *dwarf_bool_name (unsigned int); |
c906108c | 988 | |
a14ed312 | 989 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
990 | |
991 | #if 0 | |
a14ed312 | 992 | static char *dwarf_cfi_name (unsigned int); |
c906108c | 993 | |
a14ed312 | 994 | struct die_info *copy_die (struct die_info *); |
c906108c SS |
995 | #endif |
996 | ||
f9aca02d | 997 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 998 | |
f9aca02d | 999 | static void dump_die (struct die_info *); |
c906108c | 1000 | |
f9aca02d | 1001 | static void dump_die_list (struct die_info *); |
c906108c | 1002 | |
10b3939b DJ |
1003 | static void store_in_ref_table (unsigned int, struct die_info *, |
1004 | struct dwarf2_cu *); | |
c906108c | 1005 | |
e142c38c DJ |
1006 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
1007 | struct dwarf2_cu *); | |
c906108c | 1008 | |
a02abb62 JB |
1009 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
1010 | ||
10b3939b DJ |
1011 | static struct die_info *follow_die_ref (struct die_info *, |
1012 | struct attribute *, | |
1013 | struct dwarf2_cu *); | |
c906108c | 1014 | |
e142c38c DJ |
1015 | static struct type *dwarf2_fundamental_type (struct objfile *, int, |
1016 | struct dwarf2_cu *); | |
c906108c SS |
1017 | |
1018 | /* memory allocation interface */ | |
1019 | ||
7b5a2f43 | 1020 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1021 | |
f3dd6933 | 1022 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1023 | |
a14ed312 | 1024 | static struct die_info *dwarf_alloc_die (void); |
c906108c | 1025 | |
e142c38c | 1026 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1027 | |
e142c38c DJ |
1028 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1029 | struct dwarf2_cu *); | |
5fb290d7 | 1030 | |
2e276125 | 1031 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1032 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1033 | |
8e19ed76 PS |
1034 | static int attr_form_is_block (struct attribute *); |
1035 | ||
4c2df51b DJ |
1036 | static void |
1037 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 1038 | struct dwarf2_cu *cu); |
4c2df51b | 1039 | |
fe1b8b76 JB |
1040 | static gdb_byte *skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, |
1041 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1042 | |
72bf9492 DJ |
1043 | static void free_stack_comp_unit (void *); |
1044 | ||
72bf9492 DJ |
1045 | static hashval_t partial_die_hash (const void *item); |
1046 | ||
1047 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1048 | ||
ae038cb0 DJ |
1049 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
1050 | (unsigned long offset, struct objfile *objfile); | |
1051 | ||
1052 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
1053 | (unsigned long offset, struct objfile *objfile); | |
1054 | ||
1055 | static void free_one_comp_unit (void *); | |
1056 | ||
1057 | static void free_cached_comp_units (void *); | |
1058 | ||
1059 | static void age_cached_comp_units (void); | |
1060 | ||
1061 | static void free_one_cached_comp_unit (void *); | |
1062 | ||
1c379e20 DJ |
1063 | static void set_die_type (struct die_info *, struct type *, |
1064 | struct dwarf2_cu *); | |
1065 | ||
1c379e20 DJ |
1066 | static void reset_die_and_siblings_types (struct die_info *, |
1067 | struct dwarf2_cu *); | |
1c379e20 | 1068 | |
ae038cb0 DJ |
1069 | static void create_all_comp_units (struct objfile *); |
1070 | ||
31ffec48 DJ |
1071 | static struct dwarf2_cu *load_full_comp_unit (struct dwarf2_per_cu_data *, |
1072 | struct objfile *); | |
10b3939b DJ |
1073 | |
1074 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1075 | ||
1076 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1077 | struct dwarf2_per_cu_data *); | |
1078 | ||
ae038cb0 DJ |
1079 | static void dwarf2_mark (struct dwarf2_cu *); |
1080 | ||
1081 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1082 | ||
72019c9c GM |
1083 | static void read_set_type (struct die_info *, struct dwarf2_cu *); |
1084 | ||
1085 | ||
c906108c SS |
1086 | /* Try to locate the sections we need for DWARF 2 debugging |
1087 | information and return true if we have enough to do something. */ | |
1088 | ||
1089 | int | |
6502dd73 | 1090 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1091 | { |
6502dd73 DJ |
1092 | struct dwarf2_per_objfile *data; |
1093 | ||
1094 | /* Initialize per-objfile state. */ | |
1095 | data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
1096 | memset (data, 0, sizeof (*data)); | |
1097 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1098 | dwarf2_per_objfile = data; | |
1099 | ||
188dd5d6 DJ |
1100 | dwarf_info_section = 0; |
1101 | dwarf_abbrev_section = 0; | |
1102 | dwarf_line_section = 0; | |
1103 | dwarf_str_section = 0; | |
1104 | dwarf_macinfo_section = 0; | |
1105 | dwarf_frame_section = 0; | |
1106 | dwarf_eh_frame_section = 0; | |
1107 | dwarf_ranges_section = 0; | |
1108 | dwarf_loc_section = 0; | |
af34e669 | 1109 | |
6502dd73 | 1110 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 1111 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
1112 | } |
1113 | ||
1114 | /* This function is mapped across the sections and remembers the | |
1115 | offset and size of each of the debugging sections we are interested | |
1116 | in. */ | |
1117 | ||
1118 | static void | |
72dca2f5 | 1119 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1120 | { |
6314a349 | 1121 | if (strcmp (sectp->name, INFO_SECTION) == 0) |
c906108c | 1122 | { |
2c500098 | 1123 | dwarf2_per_objfile->info_size = bfd_get_section_size (sectp); |
086df311 | 1124 | dwarf_info_section = sectp; |
c906108c | 1125 | } |
6314a349 | 1126 | else if (strcmp (sectp->name, ABBREV_SECTION) == 0) |
c906108c | 1127 | { |
2c500098 | 1128 | dwarf2_per_objfile->abbrev_size = bfd_get_section_size (sectp); |
086df311 | 1129 | dwarf_abbrev_section = sectp; |
c906108c | 1130 | } |
6314a349 | 1131 | else if (strcmp (sectp->name, LINE_SECTION) == 0) |
c906108c | 1132 | { |
2c500098 | 1133 | dwarf2_per_objfile->line_size = bfd_get_section_size (sectp); |
086df311 | 1134 | dwarf_line_section = sectp; |
c906108c | 1135 | } |
6314a349 | 1136 | else if (strcmp (sectp->name, PUBNAMES_SECTION) == 0) |
c906108c | 1137 | { |
2c500098 | 1138 | dwarf2_per_objfile->pubnames_size = bfd_get_section_size (sectp); |
086df311 | 1139 | dwarf_pubnames_section = sectp; |
c906108c | 1140 | } |
6314a349 | 1141 | else if (strcmp (sectp->name, ARANGES_SECTION) == 0) |
c906108c | 1142 | { |
2c500098 | 1143 | dwarf2_per_objfile->aranges_size = bfd_get_section_size (sectp); |
086df311 | 1144 | dwarf_aranges_section = sectp; |
c906108c | 1145 | } |
6314a349 | 1146 | else if (strcmp (sectp->name, LOC_SECTION) == 0) |
c906108c | 1147 | { |
2c500098 | 1148 | dwarf2_per_objfile->loc_size = bfd_get_section_size (sectp); |
086df311 | 1149 | dwarf_loc_section = sectp; |
c906108c | 1150 | } |
6314a349 | 1151 | else if (strcmp (sectp->name, MACINFO_SECTION) == 0) |
c906108c | 1152 | { |
2c500098 | 1153 | dwarf2_per_objfile->macinfo_size = bfd_get_section_size (sectp); |
0cf824c9 | 1154 | dwarf_macinfo_section = sectp; |
c906108c | 1155 | } |
6314a349 | 1156 | else if (strcmp (sectp->name, STR_SECTION) == 0) |
c906108c | 1157 | { |
2c500098 | 1158 | dwarf2_per_objfile->str_size = bfd_get_section_size (sectp); |
086df311 | 1159 | dwarf_str_section = sectp; |
c906108c | 1160 | } |
6314a349 | 1161 | else if (strcmp (sectp->name, FRAME_SECTION) == 0) |
b6af0555 | 1162 | { |
2c500098 | 1163 | dwarf2_per_objfile->frame_size = bfd_get_section_size (sectp); |
086df311 | 1164 | dwarf_frame_section = sectp; |
b6af0555 | 1165 | } |
6314a349 | 1166 | else if (strcmp (sectp->name, EH_FRAME_SECTION) == 0) |
b6af0555 | 1167 | { |
3799ccc6 EZ |
1168 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1169 | if (aflag & SEC_HAS_CONTENTS) | |
1170 | { | |
2c500098 | 1171 | dwarf2_per_objfile->eh_frame_size = bfd_get_section_size (sectp); |
3799ccc6 EZ |
1172 | dwarf_eh_frame_section = sectp; |
1173 | } | |
b6af0555 | 1174 | } |
6314a349 | 1175 | else if (strcmp (sectp->name, RANGES_SECTION) == 0) |
af34e669 | 1176 | { |
2c500098 | 1177 | dwarf2_per_objfile->ranges_size = bfd_get_section_size (sectp); |
6f10aeb1 | 1178 | dwarf_ranges_section = sectp; |
af34e669 | 1179 | } |
72dca2f5 FR |
1180 | |
1181 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) | |
1182 | && bfd_section_vma (abfd, sectp) == 0) | |
1183 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1184 | } |
1185 | ||
1186 | /* Build a partial symbol table. */ | |
1187 | ||
1188 | void | |
fba45db2 | 1189 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c | 1190 | { |
c906108c SS |
1191 | /* We definitely need the .debug_info and .debug_abbrev sections */ |
1192 | ||
6502dd73 DJ |
1193 | dwarf2_per_objfile->info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1194 | dwarf2_per_objfile->abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
188dd5d6 DJ |
1195 | |
1196 | if (dwarf_line_section) | |
6502dd73 | 1197 | dwarf2_per_objfile->line_buffer = dwarf2_read_section (objfile, dwarf_line_section); |
41ff2da1 | 1198 | else |
6502dd73 | 1199 | dwarf2_per_objfile->line_buffer = NULL; |
c906108c | 1200 | |
188dd5d6 | 1201 | if (dwarf_str_section) |
6502dd73 | 1202 | dwarf2_per_objfile->str_buffer = dwarf2_read_section (objfile, dwarf_str_section); |
4bdf3d34 | 1203 | else |
6502dd73 | 1204 | dwarf2_per_objfile->str_buffer = NULL; |
4bdf3d34 | 1205 | |
188dd5d6 | 1206 | if (dwarf_macinfo_section) |
6502dd73 | 1207 | dwarf2_per_objfile->macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1208 | dwarf_macinfo_section); |
2e276125 | 1209 | else |
6502dd73 | 1210 | dwarf2_per_objfile->macinfo_buffer = NULL; |
2e276125 | 1211 | |
188dd5d6 | 1212 | if (dwarf_ranges_section) |
6502dd73 | 1213 | dwarf2_per_objfile->ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); |
af34e669 | 1214 | else |
6502dd73 | 1215 | dwarf2_per_objfile->ranges_buffer = NULL; |
af34e669 | 1216 | |
188dd5d6 | 1217 | if (dwarf_loc_section) |
6502dd73 | 1218 | dwarf2_per_objfile->loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); |
0d53c4c4 | 1219 | else |
6502dd73 | 1220 | dwarf2_per_objfile->loc_buffer = NULL; |
0d53c4c4 | 1221 | |
ef96bde8 EZ |
1222 | if (mainline |
1223 | || (objfile->global_psymbols.size == 0 | |
1224 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1225 | { |
1226 | init_psymbol_list (objfile, 1024); | |
1227 | } | |
1228 | ||
1229 | #if 0 | |
1230 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1231 | { | |
d4f3574e | 1232 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1233 | .debug_pubnames sections */ |
1234 | ||
d4f3574e | 1235 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1236 | } |
1237 | else | |
1238 | #endif | |
1239 | /* only test this case for now */ | |
c5aa993b | 1240 | { |
c906108c | 1241 | /* In this case we have to work a bit harder */ |
d4f3574e | 1242 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1243 | } |
1244 | } | |
1245 | ||
1246 | #if 0 | |
1247 | /* Build the partial symbol table from the information in the | |
1248 | .debug_pubnames and .debug_aranges sections. */ | |
1249 | ||
1250 | static void | |
fba45db2 | 1251 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1252 | { |
1253 | bfd *abfd = objfile->obfd; | |
1254 | char *aranges_buffer, *pubnames_buffer; | |
1255 | char *aranges_ptr, *pubnames_ptr; | |
1256 | unsigned int entry_length, version, info_offset, info_size; | |
1257 | ||
1258 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1259 | dwarf_pubnames_section); |
c906108c | 1260 | pubnames_ptr = pubnames_buffer; |
6502dd73 | 1261 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames_size) |
c906108c | 1262 | { |
613e1657 | 1263 | struct comp_unit_head cu_header; |
891d2f0b | 1264 | unsigned int bytes_read; |
613e1657 KB |
1265 | |
1266 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
891d2f0b | 1267 | &bytes_read); |
613e1657 | 1268 | pubnames_ptr += bytes_read; |
c906108c SS |
1269 | version = read_1_byte (abfd, pubnames_ptr); |
1270 | pubnames_ptr += 1; | |
1271 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1272 | pubnames_ptr += 4; | |
1273 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1274 | pubnames_ptr += 4; | |
1275 | } | |
1276 | ||
1277 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1278 | dwarf_aranges_section); |
c906108c SS |
1279 | |
1280 | } | |
1281 | #endif | |
1282 | ||
107d2387 | 1283 | /* Read in the comp unit header information from the debug_info at |
917c78fc | 1284 | info_ptr. */ |
107d2387 | 1285 | |
fe1b8b76 | 1286 | static gdb_byte * |
107d2387 | 1287 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 1288 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
1289 | { |
1290 | int signed_addr; | |
891d2f0b | 1291 | unsigned int bytes_read; |
613e1657 KB |
1292 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, |
1293 | &bytes_read); | |
1294 | info_ptr += bytes_read; | |
107d2387 AC |
1295 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1296 | info_ptr += 2; | |
613e1657 KB |
1297 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1298 | &bytes_read); | |
1299 | info_ptr += bytes_read; | |
107d2387 AC |
1300 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1301 | info_ptr += 1; | |
1302 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1303 | if (signed_addr < 0) | |
8e65ff28 | 1304 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1305 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 AC |
1306 | cu_header->signed_addr_p = signed_addr; |
1307 | return info_ptr; | |
1308 | } | |
1309 | ||
fe1b8b76 JB |
1310 | static gdb_byte * |
1311 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
72bf9492 DJ |
1312 | bfd *abfd) |
1313 | { | |
fe1b8b76 | 1314 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
1315 | |
1316 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1317 | ||
2b949cb6 | 1318 | if (header->version != 2 && header->version != 3) |
8a3fe4f8 AC |
1319 | error (_("Dwarf Error: wrong version in compilation unit header " |
1320 | "(is %d, should be %d) [in module %s]"), header->version, | |
72bf9492 DJ |
1321 | 2, bfd_get_filename (abfd)); |
1322 | ||
1323 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev_size) | |
8a3fe4f8 AC |
1324 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
1325 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 DJ |
1326 | (long) header->abbrev_offset, |
1327 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1328 | bfd_get_filename (abfd)); | |
1329 | ||
1330 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
1331 | > dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
8a3fe4f8 AC |
1332 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
1333 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 DJ |
1334 | (long) header->length, |
1335 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1336 | bfd_get_filename (abfd)); | |
1337 | ||
1338 | return info_ptr; | |
1339 | } | |
1340 | ||
aaa75496 JB |
1341 | /* Allocate a new partial symtab for file named NAME and mark this new |
1342 | partial symtab as being an include of PST. */ | |
1343 | ||
1344 | static void | |
1345 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1346 | struct objfile *objfile) | |
1347 | { | |
1348 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1349 | ||
1350 | subpst->section_offsets = pst->section_offsets; | |
1351 | subpst->textlow = 0; | |
1352 | subpst->texthigh = 0; | |
1353 | ||
1354 | subpst->dependencies = (struct partial_symtab **) | |
1355 | obstack_alloc (&objfile->objfile_obstack, | |
1356 | sizeof (struct partial_symtab *)); | |
1357 | subpst->dependencies[0] = pst; | |
1358 | subpst->number_of_dependencies = 1; | |
1359 | ||
1360 | subpst->globals_offset = 0; | |
1361 | subpst->n_global_syms = 0; | |
1362 | subpst->statics_offset = 0; | |
1363 | subpst->n_static_syms = 0; | |
1364 | subpst->symtab = NULL; | |
1365 | subpst->read_symtab = pst->read_symtab; | |
1366 | subpst->readin = 0; | |
1367 | ||
1368 | /* No private part is necessary for include psymtabs. This property | |
1369 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1370 | the regular ones. */ |
58a9656e | 1371 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1372 | } |
1373 | ||
1374 | /* Read the Line Number Program data and extract the list of files | |
1375 | included by the source file represented by PST. Build an include | |
1376 | partial symtab for each of these included files. | |
1377 | ||
1378 | This procedure assumes that there *is* a Line Number Program in | |
1379 | the given CU. Callers should check that PDI->HAS_STMT_LIST is set | |
1380 | before calling this procedure. */ | |
1381 | ||
1382 | static void | |
1383 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
1384 | struct partial_die_info *pdi, | |
1385 | struct partial_symtab *pst) | |
1386 | { | |
1387 | struct objfile *objfile = cu->objfile; | |
1388 | bfd *abfd = objfile->obfd; | |
1389 | struct line_header *lh; | |
1390 | ||
1391 | lh = dwarf_decode_line_header (pdi->line_offset, abfd, cu); | |
1392 | if (lh == NULL) | |
1393 | return; /* No linetable, so no includes. */ | |
1394 | ||
1395 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1396 | ||
1397 | free_line_header (lh); | |
1398 | } | |
1399 | ||
1400 | ||
c906108c SS |
1401 | /* Build the partial symbol table by doing a quick pass through the |
1402 | .debug_info and .debug_abbrev sections. */ | |
1403 | ||
1404 | static void | |
fba45db2 | 1405 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1406 | { |
1407 | /* Instead of reading this into a big buffer, we should probably use | |
1408 | mmap() on architectures that support it. (FIXME) */ | |
1409 | bfd *abfd = objfile->obfd; | |
fe1b8b76 JB |
1410 | gdb_byte *info_ptr; |
1411 | gdb_byte *beg_of_comp_unit; | |
c906108c SS |
1412 | struct partial_die_info comp_unit_die; |
1413 | struct partial_symtab *pst; | |
ae038cb0 | 1414 | struct cleanup *back_to; |
e142c38c | 1415 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1416 | |
6502dd73 | 1417 | info_ptr = dwarf2_per_objfile->info_buffer; |
c906108c | 1418 | |
ae038cb0 DJ |
1419 | /* Any cached compilation units will be linked by the per-objfile |
1420 | read_in_chain. Make sure to free them when we're done. */ | |
1421 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
1422 | ||
10b3939b DJ |
1423 | create_all_comp_units (objfile); |
1424 | ||
6502dd73 | 1425 | /* Since the objects we're extracting from .debug_info vary in |
af703f96 | 1426 | length, only the individual functions to extract them (like |
72bf9492 | 1427 | read_comp_unit_head and load_partial_die) can really know whether |
af703f96 JB |
1428 | the buffer is large enough to hold another complete object. |
1429 | ||
6502dd73 DJ |
1430 | At the moment, they don't actually check that. If .debug_info |
1431 | holds just one extra byte after the last compilation unit's dies, | |
1432 | then read_comp_unit_head will happily read off the end of the | |
1433 | buffer. read_partial_die is similarly casual. Those functions | |
1434 | should be fixed. | |
af703f96 JB |
1435 | |
1436 | For this loop condition, simply checking whether there's any data | |
1437 | left at all should be sufficient. */ | |
6502dd73 DJ |
1438 | while (info_ptr < (dwarf2_per_objfile->info_buffer |
1439 | + dwarf2_per_objfile->info_size)) | |
c906108c | 1440 | { |
f3dd6933 | 1441 | struct cleanup *back_to_inner; |
e7c27a73 | 1442 | struct dwarf2_cu cu; |
72bf9492 DJ |
1443 | struct abbrev_info *abbrev; |
1444 | unsigned int bytes_read; | |
1445 | struct dwarf2_per_cu_data *this_cu; | |
1446 | ||
c906108c | 1447 | beg_of_comp_unit = info_ptr; |
c906108c | 1448 | |
72bf9492 DJ |
1449 | memset (&cu, 0, sizeof (cu)); |
1450 | ||
1451 | obstack_init (&cu.comp_unit_obstack); | |
1452 | ||
1453 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); | |
1454 | ||
e7c27a73 | 1455 | cu.objfile = objfile; |
72bf9492 | 1456 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, abfd); |
e7c27a73 | 1457 | |
57349743 | 1458 | /* Complete the cu_header */ |
6502dd73 | 1459 | cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
e7c27a73 DJ |
1460 | cu.header.first_die_ptr = info_ptr; |
1461 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1462 | |
e142c38c DJ |
1463 | cu.list_in_scope = &file_symbols; |
1464 | ||
c906108c | 1465 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1466 | dwarf2_read_abbrevs (abfd, &cu); |
72bf9492 | 1467 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1468 | |
10b3939b | 1469 | this_cu = dwarf2_find_comp_unit (cu.header.offset, objfile); |
ae038cb0 | 1470 | |
c906108c | 1471 | /* Read the compilation unit die */ |
72bf9492 DJ |
1472 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, &cu); |
1473 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1474 | abfd, info_ptr, &cu); | |
c906108c | 1475 | |
31ffec48 DJ |
1476 | if (comp_unit_die.tag == DW_TAG_partial_unit) |
1477 | { | |
1478 | info_ptr = (beg_of_comp_unit + cu.header.length | |
1479 | + cu.header.initial_length_size); | |
1480 | do_cleanups (back_to_inner); | |
1481 | continue; | |
1482 | } | |
1483 | ||
c906108c | 1484 | /* Set the language we're debugging */ |
e142c38c | 1485 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1486 | |
1487 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1488 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1489 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1490 | comp_unit_die.lowpc, |
1491 | objfile->global_psymbols.next, | |
1492 | objfile->static_psymbols.next); | |
1493 | ||
ae038cb0 DJ |
1494 | if (comp_unit_die.dirname) |
1495 | pst->dirname = xstrdup (comp_unit_die.dirname); | |
57c22c6c | 1496 | |
10b3939b DJ |
1497 | pst->read_symtab_private = (char *) this_cu; |
1498 | ||
613e1657 | 1499 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1500 | |
1501 | /* Store the function that reads in the rest of the symbol table */ | |
1502 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1503 | ||
10b3939b DJ |
1504 | /* If this compilation unit was already read in, free the |
1505 | cached copy in order to read it in again. This is | |
1506 | necessary because we skipped some symbols when we first | |
1507 | read in the compilation unit (see load_partial_dies). | |
1508 | This problem could be avoided, but the benefit is | |
1509 | unclear. */ | |
1510 | if (this_cu->cu != NULL) | |
1511 | free_one_cached_comp_unit (this_cu->cu); | |
ae038cb0 | 1512 | |
10b3939b | 1513 | cu.per_cu = this_cu; |
ae038cb0 | 1514 | |
10b3939b DJ |
1515 | /* Note that this is a pointer to our stack frame, being |
1516 | added to a global data structure. It will be cleaned up | |
1517 | in free_stack_comp_unit when we finish with this | |
1518 | compilation unit. */ | |
1519 | this_cu->cu = &cu; | |
ae038cb0 | 1520 | |
10b3939b | 1521 | this_cu->psymtab = pst; |
ae038cb0 | 1522 | |
c906108c SS |
1523 | /* Check if comp unit has_children. |
1524 | If so, read the rest of the partial symbols from this comp unit. | |
1525 | If not, there's no more debug_info for this comp unit. */ | |
1526 | if (comp_unit_die.has_children) | |
1527 | { | |
72bf9492 DJ |
1528 | struct partial_die_info *first_die; |
1529 | ||
91c24f0a DC |
1530 | lowpc = ((CORE_ADDR) -1); |
1531 | highpc = ((CORE_ADDR) 0); | |
1532 | ||
72bf9492 DJ |
1533 | first_die = load_partial_dies (abfd, info_ptr, 1, &cu); |
1534 | ||
1535 | scan_partial_symbols (first_die, &lowpc, &highpc, &cu); | |
c906108c | 1536 | |
91c24f0a DC |
1537 | /* If we didn't find a lowpc, set it to highpc to avoid |
1538 | complaints from `maint check'. */ | |
1539 | if (lowpc == ((CORE_ADDR) -1)) | |
1540 | lowpc = highpc; | |
72bf9492 | 1541 | |
c906108c SS |
1542 | /* If the compilation unit didn't have an explicit address range, |
1543 | then use the information extracted from its child dies. */ | |
0b010bcc | 1544 | if (! comp_unit_die.has_pc_info) |
c906108c | 1545 | { |
c5aa993b | 1546 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1547 | comp_unit_die.highpc = highpc; |
1548 | } | |
1549 | } | |
c5aa993b | 1550 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1551 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1552 | ||
1553 | pst->n_global_syms = objfile->global_psymbols.next - | |
1554 | (objfile->global_psymbols.list + pst->globals_offset); | |
1555 | pst->n_static_syms = objfile->static_psymbols.next - | |
1556 | (objfile->static_psymbols.list + pst->statics_offset); | |
1557 | sort_pst_symbols (pst); | |
1558 | ||
1559 | /* If there is already a psymtab or symtab for a file of this | |
1560 | name, remove it. (If there is a symtab, more drastic things | |
1561 | also happen.) This happens in VxWorks. */ | |
1562 | free_named_symtabs (pst->filename); | |
1563 | ||
dd373385 EZ |
1564 | info_ptr = beg_of_comp_unit + cu.header.length |
1565 | + cu.header.initial_length_size; | |
1566 | ||
aaa75496 JB |
1567 | if (comp_unit_die.has_stmt_list) |
1568 | { | |
1569 | /* Get the list of files included in the current compilation unit, | |
1570 | and build a psymtab for each of them. */ | |
1571 | dwarf2_build_include_psymtabs (&cu, &comp_unit_die, pst); | |
1572 | } | |
1573 | ||
f3dd6933 | 1574 | do_cleanups (back_to_inner); |
c906108c | 1575 | } |
ae038cb0 DJ |
1576 | do_cleanups (back_to); |
1577 | } | |
1578 | ||
1579 | /* Load the DIEs for a secondary CU into memory. */ | |
1580 | ||
1581 | static void | |
1582 | load_comp_unit (struct dwarf2_per_cu_data *this_cu, struct objfile *objfile) | |
1583 | { | |
1584 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 1585 | gdb_byte *info_ptr, *beg_of_comp_unit; |
ae038cb0 DJ |
1586 | struct partial_die_info comp_unit_die; |
1587 | struct dwarf2_cu *cu; | |
1588 | struct abbrev_info *abbrev; | |
1589 | unsigned int bytes_read; | |
1590 | struct cleanup *back_to; | |
1591 | ||
1592 | info_ptr = dwarf2_per_objfile->info_buffer + this_cu->offset; | |
1593 | beg_of_comp_unit = info_ptr; | |
1594 | ||
1595 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
1596 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
1597 | ||
1598 | obstack_init (&cu->comp_unit_obstack); | |
1599 | ||
1600 | cu->objfile = objfile; | |
1601 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, abfd); | |
1602 | ||
1603 | /* Complete the cu_header. */ | |
1604 | cu->header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; | |
1605 | cu->header.first_die_ptr = info_ptr; | |
1606 | cu->header.cu_head_ptr = beg_of_comp_unit; | |
1607 | ||
1608 | /* Read the abbrevs for this compilation unit into a table. */ | |
1609 | dwarf2_read_abbrevs (abfd, cu); | |
1610 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
1611 | ||
1612 | /* Read the compilation unit die. */ | |
1613 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1614 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1615 | abfd, info_ptr, cu); | |
1616 | ||
1617 | /* Set the language we're debugging. */ | |
1618 | set_cu_language (comp_unit_die.language, cu); | |
1619 | ||
1620 | /* Link this compilation unit into the compilation unit tree. */ | |
1621 | this_cu->cu = cu; | |
1622 | cu->per_cu = this_cu; | |
1623 | ||
1624 | /* Check if comp unit has_children. | |
1625 | If so, read the rest of the partial symbols from this comp unit. | |
1626 | If not, there's no more debug_info for this comp unit. */ | |
1627 | if (comp_unit_die.has_children) | |
1628 | load_partial_dies (abfd, info_ptr, 0, cu); | |
1629 | ||
1630 | do_cleanups (back_to); | |
1631 | } | |
1632 | ||
1633 | /* Create a list of all compilation units in OBJFILE. We do this only | |
1634 | if an inter-comp-unit reference is found; presumably if there is one, | |
1635 | there will be many, and one will occur early in the .debug_info section. | |
1636 | So there's no point in building this list incrementally. */ | |
1637 | ||
1638 | static void | |
1639 | create_all_comp_units (struct objfile *objfile) | |
1640 | { | |
1641 | int n_allocated; | |
1642 | int n_comp_units; | |
1643 | struct dwarf2_per_cu_data **all_comp_units; | |
fe1b8b76 | 1644 | gdb_byte *info_ptr = dwarf2_per_objfile->info_buffer; |
ae038cb0 DJ |
1645 | |
1646 | n_comp_units = 0; | |
1647 | n_allocated = 10; | |
1648 | all_comp_units = xmalloc (n_allocated | |
1649 | * sizeof (struct dwarf2_per_cu_data *)); | |
1650 | ||
1651 | while (info_ptr < dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1652 | { | |
1653 | struct comp_unit_head cu_header; | |
fe1b8b76 | 1654 | gdb_byte *beg_of_comp_unit; |
ae038cb0 DJ |
1655 | struct dwarf2_per_cu_data *this_cu; |
1656 | unsigned long offset; | |
891d2f0b | 1657 | unsigned int bytes_read; |
ae038cb0 DJ |
1658 | |
1659 | offset = info_ptr - dwarf2_per_objfile->info_buffer; | |
1660 | ||
1661 | /* Read just enough information to find out where the next | |
1662 | compilation unit is. */ | |
dd373385 | 1663 | cu_header.initial_length_size = 0; |
ae038cb0 DJ |
1664 | cu_header.length = read_initial_length (objfile->obfd, info_ptr, |
1665 | &cu_header, &bytes_read); | |
1666 | ||
1667 | /* Save the compilation unit for later lookup. */ | |
1668 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
1669 | sizeof (struct dwarf2_per_cu_data)); | |
1670 | memset (this_cu, 0, sizeof (*this_cu)); | |
1671 | this_cu->offset = offset; | |
1672 | this_cu->length = cu_header.length + cu_header.initial_length_size; | |
1673 | ||
1674 | if (n_comp_units == n_allocated) | |
1675 | { | |
1676 | n_allocated *= 2; | |
1677 | all_comp_units = xrealloc (all_comp_units, | |
1678 | n_allocated | |
1679 | * sizeof (struct dwarf2_per_cu_data *)); | |
1680 | } | |
1681 | all_comp_units[n_comp_units++] = this_cu; | |
1682 | ||
1683 | info_ptr = info_ptr + this_cu->length; | |
1684 | } | |
1685 | ||
1686 | dwarf2_per_objfile->all_comp_units | |
1687 | = obstack_alloc (&objfile->objfile_obstack, | |
1688 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1689 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
1690 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1691 | xfree (all_comp_units); | |
1692 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
1693 | } |
1694 | ||
72bf9492 DJ |
1695 | /* Process all loaded DIEs for compilation unit CU, starting at FIRST_DIE. |
1696 | Also set *LOWPC and *HIGHPC to the lowest and highest PC values found | |
1697 | in CU. */ | |
c906108c | 1698 | |
72bf9492 DJ |
1699 | static void |
1700 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
1701 | CORE_ADDR *highpc, struct dwarf2_cu *cu) | |
c906108c | 1702 | { |
e7c27a73 | 1703 | struct objfile *objfile = cu->objfile; |
c906108c | 1704 | bfd *abfd = objfile->obfd; |
72bf9492 | 1705 | struct partial_die_info *pdi; |
c906108c | 1706 | |
91c24f0a DC |
1707 | /* Now, march along the PDI's, descending into ones which have |
1708 | interesting children but skipping the children of the other ones, | |
1709 | until we reach the end of the compilation unit. */ | |
c906108c | 1710 | |
72bf9492 | 1711 | pdi = first_die; |
91c24f0a | 1712 | |
72bf9492 DJ |
1713 | while (pdi != NULL) |
1714 | { | |
1715 | fixup_partial_die (pdi, cu); | |
c906108c | 1716 | |
91c24f0a DC |
1717 | /* Anonymous namespaces have no name but have interesting |
1718 | children, so we need to look at them. Ditto for anonymous | |
1719 | enums. */ | |
933c6fe4 | 1720 | |
72bf9492 DJ |
1721 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
1722 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 1723 | { |
72bf9492 | 1724 | switch (pdi->tag) |
c906108c SS |
1725 | { |
1726 | case DW_TAG_subprogram: | |
72bf9492 | 1727 | if (pdi->has_pc_info) |
c906108c | 1728 | { |
72bf9492 | 1729 | if (pdi->lowpc < *lowpc) |
c906108c | 1730 | { |
72bf9492 | 1731 | *lowpc = pdi->lowpc; |
c906108c | 1732 | } |
72bf9492 | 1733 | if (pdi->highpc > *highpc) |
c906108c | 1734 | { |
72bf9492 | 1735 | *highpc = pdi->highpc; |
c906108c | 1736 | } |
72bf9492 | 1737 | if (!pdi->is_declaration) |
c906108c | 1738 | { |
72bf9492 | 1739 | add_partial_symbol (pdi, cu); |
c906108c SS |
1740 | } |
1741 | } | |
1742 | break; | |
1743 | case DW_TAG_variable: | |
1744 | case DW_TAG_typedef: | |
91c24f0a | 1745 | case DW_TAG_union_type: |
72bf9492 | 1746 | if (!pdi->is_declaration) |
63d06c5c | 1747 | { |
72bf9492 | 1748 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
1749 | } |
1750 | break; | |
c906108c SS |
1751 | case DW_TAG_class_type: |
1752 | case DW_TAG_structure_type: | |
72bf9492 | 1753 | if (!pdi->is_declaration) |
c906108c | 1754 | { |
72bf9492 | 1755 | add_partial_symbol (pdi, cu); |
c906108c SS |
1756 | } |
1757 | break; | |
91c24f0a | 1758 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
1759 | if (!pdi->is_declaration) |
1760 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
1761 | break; |
1762 | case DW_TAG_base_type: | |
a02abb62 | 1763 | case DW_TAG_subrange_type: |
c906108c | 1764 | /* File scope base type definitions are added to the partial |
c5aa993b | 1765 | symbol table. */ |
72bf9492 | 1766 | add_partial_symbol (pdi, cu); |
c906108c | 1767 | break; |
d9fa45fe | 1768 | case DW_TAG_namespace: |
72bf9492 | 1769 | add_partial_namespace (pdi, lowpc, highpc, cu); |
91c24f0a | 1770 | break; |
c906108c SS |
1771 | default: |
1772 | break; | |
1773 | } | |
1774 | } | |
1775 | ||
72bf9492 DJ |
1776 | /* If the die has a sibling, skip to the sibling. */ |
1777 | ||
1778 | pdi = pdi->die_sibling; | |
1779 | } | |
1780 | } | |
1781 | ||
1782 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 1783 | |
72bf9492 | 1784 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
1785 | name is concatenated with "::" and the partial DIE's name. For |
1786 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
1787 | Enumerators are an exception; they use the scope of their parent |
1788 | enumeration type, i.e. the name of the enumeration type is not | |
1789 | prepended to the enumerator. | |
91c24f0a | 1790 | |
72bf9492 DJ |
1791 | There are two complexities. One is DW_AT_specification; in this |
1792 | case "parent" means the parent of the target of the specification, | |
1793 | instead of the direct parent of the DIE. The other is compilers | |
1794 | which do not emit DW_TAG_namespace; in this case we try to guess | |
1795 | the fully qualified name of structure types from their members' | |
1796 | linkage names. This must be done using the DIE's children rather | |
1797 | than the children of any DW_AT_specification target. We only need | |
1798 | to do this for structures at the top level, i.e. if the target of | |
1799 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
1800 | have a parent. */ | |
1801 | ||
1802 | /* Compute the scope prefix associated with PDI's parent, in | |
1803 | compilation unit CU. The result will be allocated on CU's | |
1804 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
1805 | field. NULL is returned if no prefix is necessary. */ | |
1806 | static char * | |
1807 | partial_die_parent_scope (struct partial_die_info *pdi, | |
1808 | struct dwarf2_cu *cu) | |
1809 | { | |
1810 | char *grandparent_scope; | |
1811 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 1812 | |
72bf9492 DJ |
1813 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
1814 | then this means the parent of the specification DIE. */ | |
1815 | ||
1816 | real_pdi = pdi; | |
72bf9492 | 1817 | while (real_pdi->has_specification) |
10b3939b | 1818 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
1819 | |
1820 | parent = real_pdi->die_parent; | |
1821 | if (parent == NULL) | |
1822 | return NULL; | |
1823 | ||
1824 | if (parent->scope_set) | |
1825 | return parent->scope; | |
1826 | ||
1827 | fixup_partial_die (parent, cu); | |
1828 | ||
10b3939b | 1829 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 DJ |
1830 | |
1831 | if (parent->tag == DW_TAG_namespace | |
1832 | || parent->tag == DW_TAG_structure_type | |
1833 | || parent->tag == DW_TAG_class_type | |
1834 | || parent->tag == DW_TAG_union_type) | |
1835 | { | |
1836 | if (grandparent_scope == NULL) | |
1837 | parent->scope = parent->name; | |
1838 | else | |
987504bb JJ |
1839 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
1840 | parent->name, cu); | |
72bf9492 DJ |
1841 | } |
1842 | else if (parent->tag == DW_TAG_enumeration_type) | |
1843 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
1844 | parent->scope = grandparent_scope; | |
1845 | else | |
1846 | { | |
1847 | /* FIXME drow/2004-04-01: What should we be doing with | |
1848 | function-local names? For partial symbols, we should probably be | |
1849 | ignoring them. */ | |
1850 | complaint (&symfile_complaints, | |
e2e0b3e5 | 1851 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
1852 | parent->tag, pdi->offset); |
1853 | parent->scope = grandparent_scope; | |
c906108c SS |
1854 | } |
1855 | ||
72bf9492 DJ |
1856 | parent->scope_set = 1; |
1857 | return parent->scope; | |
1858 | } | |
1859 | ||
1860 | /* Return the fully scoped name associated with PDI, from compilation unit | |
1861 | CU. The result will be allocated with malloc. */ | |
1862 | static char * | |
1863 | partial_die_full_name (struct partial_die_info *pdi, | |
1864 | struct dwarf2_cu *cu) | |
1865 | { | |
1866 | char *parent_scope; | |
1867 | ||
1868 | parent_scope = partial_die_parent_scope (pdi, cu); | |
1869 | if (parent_scope == NULL) | |
1870 | return NULL; | |
1871 | else | |
987504bb | 1872 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
1873 | } |
1874 | ||
1875 | static void | |
72bf9492 | 1876 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 1877 | { |
e7c27a73 | 1878 | struct objfile *objfile = cu->objfile; |
c906108c | 1879 | CORE_ADDR addr = 0; |
72bf9492 DJ |
1880 | char *actual_name; |
1881 | const char *my_prefix; | |
5c4e30ca | 1882 | const struct partial_symbol *psym = NULL; |
e142c38c | 1883 | CORE_ADDR baseaddr; |
72bf9492 | 1884 | int built_actual_name = 0; |
e142c38c DJ |
1885 | |
1886 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1887 | |
72bf9492 DJ |
1888 | actual_name = NULL; |
1889 | ||
1890 | if (pdi_needs_namespace (pdi->tag)) | |
63d06c5c | 1891 | { |
72bf9492 DJ |
1892 | actual_name = partial_die_full_name (pdi, cu); |
1893 | if (actual_name) | |
1894 | built_actual_name = 1; | |
63d06c5c DC |
1895 | } |
1896 | ||
72bf9492 DJ |
1897 | if (actual_name == NULL) |
1898 | actual_name = pdi->name; | |
1899 | ||
c906108c SS |
1900 | switch (pdi->tag) |
1901 | { | |
1902 | case DW_TAG_subprogram: | |
1903 | if (pdi->is_external) | |
1904 | { | |
38d518c9 | 1905 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1906 | mst_text, objfile); */ |
38d518c9 | 1907 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1908 | VAR_DOMAIN, LOC_BLOCK, |
1909 | &objfile->global_psymbols, | |
1910 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1911 | cu->language, objfile); |
c906108c SS |
1912 | } |
1913 | else | |
1914 | { | |
38d518c9 | 1915 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1916 | mst_file_text, objfile); */ |
38d518c9 | 1917 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1918 | VAR_DOMAIN, LOC_BLOCK, |
1919 | &objfile->static_psymbols, | |
1920 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1921 | cu->language, objfile); |
c906108c SS |
1922 | } |
1923 | break; | |
1924 | case DW_TAG_variable: | |
1925 | if (pdi->is_external) | |
1926 | { | |
1927 | /* Global Variable. | |
1928 | Don't enter into the minimal symbol tables as there is | |
1929 | a minimal symbol table entry from the ELF symbols already. | |
1930 | Enter into partial symbol table if it has a location | |
1931 | descriptor or a type. | |
1932 | If the location descriptor is missing, new_symbol will create | |
1933 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1934 | be determined from the minimal symbol table whenever the variable | |
1935 | is referenced. | |
1936 | The address for the partial symbol table entry is not | |
1937 | used by GDB, but it comes in handy for debugging partial symbol | |
1938 | table building. */ | |
1939 | ||
1940 | if (pdi->locdesc) | |
e7c27a73 | 1941 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1942 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1943 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1944 | VAR_DOMAIN, LOC_STATIC, |
1945 | &objfile->global_psymbols, | |
1946 | 0, addr + baseaddr, | |
e142c38c | 1947 | cu->language, objfile); |
c906108c SS |
1948 | } |
1949 | else | |
1950 | { | |
1951 | /* Static Variable. Skip symbols without location descriptors. */ | |
1952 | if (pdi->locdesc == NULL) | |
1953 | return; | |
e7c27a73 | 1954 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 1955 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 1956 | mst_file_data, objfile); */ |
38d518c9 | 1957 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1958 | VAR_DOMAIN, LOC_STATIC, |
1959 | &objfile->static_psymbols, | |
1960 | 0, addr + baseaddr, | |
e142c38c | 1961 | cu->language, objfile); |
c906108c SS |
1962 | } |
1963 | break; | |
1964 | case DW_TAG_typedef: | |
1965 | case DW_TAG_base_type: | |
a02abb62 | 1966 | case DW_TAG_subrange_type: |
38d518c9 | 1967 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1968 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 1969 | &objfile->static_psymbols, |
e142c38c | 1970 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1971 | break; |
72bf9492 DJ |
1972 | case DW_TAG_namespace: |
1973 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
1974 | VAR_DOMAIN, LOC_TYPEDEF, | |
1975 | &objfile->global_psymbols, | |
1976 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
1977 | break; | |
c906108c SS |
1978 | case DW_TAG_class_type: |
1979 | case DW_TAG_structure_type: | |
1980 | case DW_TAG_union_type: | |
1981 | case DW_TAG_enumeration_type: | |
1982 | /* Skip aggregate types without children, these are external | |
c5aa993b | 1983 | references. */ |
63d06c5c DC |
1984 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
1985 | static vs. global. */ | |
c906108c SS |
1986 | if (pdi->has_children == 0) |
1987 | return; | |
38d518c9 | 1988 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1989 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
1990 | (cu->language == language_cplus |
1991 | || cu->language == language_java) | |
63d06c5c DC |
1992 | ? &objfile->global_psymbols |
1993 | : &objfile->static_psymbols, | |
e142c38c | 1994 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1995 | |
987504bb JJ |
1996 | if (cu->language == language_cplus |
1997 | || cu->language == language_java) | |
c906108c | 1998 | { |
987504bb | 1999 | /* For C++ and Java, these implicitly act as typedefs as well. */ |
38d518c9 | 2000 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2001 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 2002 | &objfile->global_psymbols, |
e142c38c | 2003 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2004 | } |
2005 | break; | |
2006 | case DW_TAG_enumerator: | |
38d518c9 | 2007 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2008 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
2009 | (cu->language == language_cplus |
2010 | || cu->language == language_java) | |
f6fe98ef DJ |
2011 | ? &objfile->global_psymbols |
2012 | : &objfile->static_psymbols, | |
e142c38c | 2013 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2014 | break; |
2015 | default: | |
2016 | break; | |
2017 | } | |
5c4e30ca DC |
2018 | |
2019 | /* Check to see if we should scan the name for possible namespace | |
2020 | info. Only do this if this is C++, if we don't have namespace | |
2021 | debugging info in the file, if the psym is of an appropriate type | |
2022 | (otherwise we'll have psym == NULL), and if we actually had a | |
2023 | mangled name to begin with. */ | |
2024 | ||
72bf9492 DJ |
2025 | /* FIXME drow/2004-02-22: Why don't we do this for classes, i.e. the |
2026 | cases which do not set PSYM above? */ | |
2027 | ||
e142c38c | 2028 | if (cu->language == language_cplus |
72bf9492 | 2029 | && cu->has_namespace_info == 0 |
5c4e30ca DC |
2030 | && psym != NULL |
2031 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
2032 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
2033 | objfile); | |
72bf9492 DJ |
2034 | |
2035 | if (built_actual_name) | |
2036 | xfree (actual_name); | |
c906108c SS |
2037 | } |
2038 | ||
72bf9492 DJ |
2039 | /* Determine whether a die of type TAG living in a C++ class or |
2040 | namespace needs to have the name of the scope prepended to the | |
63d06c5c DC |
2041 | name listed in the die. */ |
2042 | ||
2043 | static int | |
72bf9492 | 2044 | pdi_needs_namespace (enum dwarf_tag tag) |
63d06c5c | 2045 | { |
63d06c5c DC |
2046 | switch (tag) |
2047 | { | |
72bf9492 | 2048 | case DW_TAG_namespace: |
63d06c5c DC |
2049 | case DW_TAG_typedef: |
2050 | case DW_TAG_class_type: | |
2051 | case DW_TAG_structure_type: | |
2052 | case DW_TAG_union_type: | |
2053 | case DW_TAG_enumeration_type: | |
2054 | case DW_TAG_enumerator: | |
2055 | return 1; | |
2056 | default: | |
2057 | return 0; | |
2058 | } | |
2059 | } | |
2060 | ||
5c4e30ca DC |
2061 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2062 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2063 | the name of the enclosing namespace. */ | |
91c24f0a | 2064 | |
72bf9492 DJ |
2065 | static void |
2066 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2067 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
72bf9492 | 2068 | struct dwarf2_cu *cu) |
91c24f0a | 2069 | { |
e7c27a73 | 2070 | struct objfile *objfile = cu->objfile; |
5c4e30ca | 2071 | |
72bf9492 | 2072 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2073 | |
72bf9492 | 2074 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2075 | |
2076 | /* Now scan partial symbols in that namespace. */ | |
2077 | ||
91c24f0a | 2078 | if (pdi->has_children) |
72bf9492 | 2079 | scan_partial_symbols (pdi->die_child, lowpc, highpc, cu); |
91c24f0a DC |
2080 | } |
2081 | ||
72bf9492 DJ |
2082 | /* See if we can figure out if the class lives in a namespace. We do |
2083 | this by looking for a member function; its demangled name will | |
2084 | contain namespace info, if there is any. */ | |
63d06c5c | 2085 | |
72bf9492 DJ |
2086 | static void |
2087 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2088 | struct dwarf2_cu *cu) | |
63d06c5c | 2089 | { |
987504bb JJ |
2090 | if ((cu->language == language_cplus |
2091 | || cu->language == language_java) | |
72bf9492 | 2092 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2093 | && struct_pdi->has_children) |
2094 | { | |
63d06c5c DC |
2095 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2096 | what template types look like, because the demangler | |
2097 | frequently doesn't give the same name as the debug info. We | |
2098 | could fix this by only using the demangled name to get the | |
134d01f1 | 2099 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2100 | |
72bf9492 DJ |
2101 | struct partial_die_info *child_pdi = struct_pdi->die_child; |
2102 | struct partial_die_info *real_pdi; | |
5d51ca54 | 2103 | |
72bf9492 DJ |
2104 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2105 | we should not do this. We'll prepend the parent's fully qualified | |
2106 | name when we create the partial symbol. */ | |
5d51ca54 | 2107 | |
72bf9492 | 2108 | real_pdi = struct_pdi; |
72bf9492 | 2109 | while (real_pdi->has_specification) |
10b3939b | 2110 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2111 | |
72bf9492 DJ |
2112 | if (real_pdi->die_parent != NULL) |
2113 | return; | |
63d06c5c | 2114 | |
72bf9492 DJ |
2115 | while (child_pdi != NULL) |
2116 | { | |
2117 | if (child_pdi->tag == DW_TAG_subprogram) | |
63d06c5c | 2118 | { |
72bf9492 | 2119 | char *actual_class_name |
31c27f77 JJ |
2120 | = language_class_name_from_physname (cu->language_defn, |
2121 | child_pdi->name); | |
63d06c5c | 2122 | if (actual_class_name != NULL) |
72bf9492 DJ |
2123 | { |
2124 | struct_pdi->name | |
2125 | = obsavestring (actual_class_name, | |
2126 | strlen (actual_class_name), | |
2127 | &cu->comp_unit_obstack); | |
2128 | xfree (actual_class_name); | |
2129 | } | |
63d06c5c DC |
2130 | break; |
2131 | } | |
72bf9492 DJ |
2132 | |
2133 | child_pdi = child_pdi->die_sibling; | |
63d06c5c DC |
2134 | } |
2135 | } | |
63d06c5c DC |
2136 | } |
2137 | ||
91c24f0a DC |
2138 | /* Read a partial die corresponding to an enumeration type. */ |
2139 | ||
72bf9492 DJ |
2140 | static void |
2141 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2142 | struct dwarf2_cu *cu) | |
91c24f0a | 2143 | { |
e7c27a73 | 2144 | struct objfile *objfile = cu->objfile; |
91c24f0a | 2145 | bfd *abfd = objfile->obfd; |
72bf9492 | 2146 | struct partial_die_info *pdi; |
91c24f0a DC |
2147 | |
2148 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2149 | add_partial_symbol (enum_pdi, cu); |
2150 | ||
2151 | pdi = enum_pdi->die_child; | |
2152 | while (pdi) | |
91c24f0a | 2153 | { |
72bf9492 | 2154 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 2155 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 2156 | else |
72bf9492 DJ |
2157 | add_partial_symbol (pdi, cu); |
2158 | pdi = pdi->die_sibling; | |
91c24f0a | 2159 | } |
91c24f0a DC |
2160 | } |
2161 | ||
4bb7a0a7 DJ |
2162 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2163 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2164 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2165 | the initial number. */ | |
2166 | ||
2167 | static struct abbrev_info * | |
fe1b8b76 | 2168 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 2169 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2170 | { |
2171 | bfd *abfd = cu->objfile->obfd; | |
2172 | unsigned int abbrev_number; | |
2173 | struct abbrev_info *abbrev; | |
2174 | ||
2175 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2176 | ||
2177 | if (abbrev_number == 0) | |
2178 | return NULL; | |
2179 | ||
2180 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2181 | if (!abbrev) | |
2182 | { | |
8a3fe4f8 | 2183 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
2184 | bfd_get_filename (abfd)); |
2185 | } | |
2186 | ||
2187 | return abbrev; | |
2188 | } | |
2189 | ||
2190 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
2191 | pointer to the end of a series of DIEs, terminated by an empty | |
2192 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
2193 | ||
fe1b8b76 JB |
2194 | static gdb_byte * |
2195 | skip_children (gdb_byte *info_ptr, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
2196 | { |
2197 | struct abbrev_info *abbrev; | |
2198 | unsigned int bytes_read; | |
2199 | ||
2200 | while (1) | |
2201 | { | |
2202 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2203 | if (abbrev == NULL) | |
2204 | return info_ptr + bytes_read; | |
2205 | else | |
2206 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
2207 | } | |
2208 | } | |
2209 | ||
2210 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
2211 | should point just after the initial uleb128 of a DIE, and the | |
2212 | abbrev corresponding to that skipped uleb128 should be passed in | |
2213 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2214 | children. */ | |
2215 | ||
fe1b8b76 JB |
2216 | static gdb_byte * |
2217 | skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, | |
4bb7a0a7 DJ |
2218 | struct dwarf2_cu *cu) |
2219 | { | |
2220 | unsigned int bytes_read; | |
2221 | struct attribute attr; | |
2222 | bfd *abfd = cu->objfile->obfd; | |
2223 | unsigned int form, i; | |
2224 | ||
2225 | for (i = 0; i < abbrev->num_attrs; i++) | |
2226 | { | |
2227 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2228 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2229 | { | |
2230 | read_attribute (&attr, &abbrev->attrs[i], | |
2231 | abfd, info_ptr, cu); | |
2232 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 2233 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 2234 | else |
6502dd73 DJ |
2235 | return dwarf2_per_objfile->info_buffer |
2236 | + dwarf2_get_ref_die_offset (&attr, cu); | |
4bb7a0a7 DJ |
2237 | } |
2238 | ||
2239 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2240 | form = abbrev->attrs[i].form; | |
2241 | skip_attribute: | |
2242 | switch (form) | |
2243 | { | |
2244 | case DW_FORM_addr: | |
2245 | case DW_FORM_ref_addr: | |
2246 | info_ptr += cu->header.addr_size; | |
2247 | break; | |
2248 | case DW_FORM_data1: | |
2249 | case DW_FORM_ref1: | |
2250 | case DW_FORM_flag: | |
2251 | info_ptr += 1; | |
2252 | break; | |
2253 | case DW_FORM_data2: | |
2254 | case DW_FORM_ref2: | |
2255 | info_ptr += 2; | |
2256 | break; | |
2257 | case DW_FORM_data4: | |
2258 | case DW_FORM_ref4: | |
2259 | info_ptr += 4; | |
2260 | break; | |
2261 | case DW_FORM_data8: | |
2262 | case DW_FORM_ref8: | |
2263 | info_ptr += 8; | |
2264 | break; | |
2265 | case DW_FORM_string: | |
2266 | read_string (abfd, info_ptr, &bytes_read); | |
2267 | info_ptr += bytes_read; | |
2268 | break; | |
2269 | case DW_FORM_strp: | |
2270 | info_ptr += cu->header.offset_size; | |
2271 | break; | |
2272 | case DW_FORM_block: | |
2273 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2274 | info_ptr += bytes_read; | |
2275 | break; | |
2276 | case DW_FORM_block1: | |
2277 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2278 | break; | |
2279 | case DW_FORM_block2: | |
2280 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2281 | break; | |
2282 | case DW_FORM_block4: | |
2283 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2284 | break; | |
2285 | case DW_FORM_sdata: | |
2286 | case DW_FORM_udata: | |
2287 | case DW_FORM_ref_udata: | |
2288 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2289 | break; | |
2290 | case DW_FORM_indirect: | |
2291 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2292 | info_ptr += bytes_read; | |
2293 | /* We need to continue parsing from here, so just go back to | |
2294 | the top. */ | |
2295 | goto skip_attribute; | |
2296 | ||
2297 | default: | |
8a3fe4f8 | 2298 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
2299 | dwarf_form_name (form), |
2300 | bfd_get_filename (abfd)); | |
2301 | } | |
2302 | } | |
2303 | ||
2304 | if (abbrev->has_children) | |
2305 | return skip_children (info_ptr, cu); | |
2306 | else | |
2307 | return info_ptr; | |
2308 | } | |
2309 | ||
2310 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
2311 | the next DIE after ORIG_PDI. */ | |
91c24f0a | 2312 | |
fe1b8b76 JB |
2313 | static gdb_byte * |
2314 | locate_pdi_sibling (struct partial_die_info *orig_pdi, gdb_byte *info_ptr, | |
e7c27a73 | 2315 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2316 | { |
2317 | /* Do we know the sibling already? */ | |
72bf9492 | 2318 | |
91c24f0a DC |
2319 | if (orig_pdi->sibling) |
2320 | return orig_pdi->sibling; | |
2321 | ||
2322 | /* Are there any children to deal with? */ | |
2323 | ||
2324 | if (!orig_pdi->has_children) | |
2325 | return info_ptr; | |
2326 | ||
4bb7a0a7 | 2327 | /* Skip the children the long way. */ |
91c24f0a | 2328 | |
4bb7a0a7 | 2329 | return skip_children (info_ptr, cu); |
91c24f0a DC |
2330 | } |
2331 | ||
c906108c SS |
2332 | /* Expand this partial symbol table into a full symbol table. */ |
2333 | ||
2334 | static void | |
fba45db2 | 2335 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2336 | { |
2337 | /* FIXME: This is barely more than a stub. */ | |
2338 | if (pst != NULL) | |
2339 | { | |
2340 | if (pst->readin) | |
2341 | { | |
8a3fe4f8 | 2342 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
2343 | } |
2344 | else | |
2345 | { | |
2346 | if (info_verbose) | |
2347 | { | |
a3f17187 | 2348 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
2349 | gdb_flush (gdb_stdout); |
2350 | } | |
2351 | ||
10b3939b DJ |
2352 | /* Restore our global data. */ |
2353 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2354 | dwarf2_objfile_data_key); | |
2355 | ||
c906108c SS |
2356 | psymtab_to_symtab_1 (pst); |
2357 | ||
2358 | /* Finish up the debug error message. */ | |
2359 | if (info_verbose) | |
a3f17187 | 2360 | printf_filtered (_("done.\n")); |
c906108c SS |
2361 | } |
2362 | } | |
2363 | } | |
2364 | ||
10b3939b DJ |
2365 | /* Add PER_CU to the queue. */ |
2366 | ||
2367 | static void | |
2368 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2369 | { | |
2370 | struct dwarf2_queue_item *item; | |
2371 | ||
2372 | per_cu->queued = 1; | |
2373 | item = xmalloc (sizeof (*item)); | |
2374 | item->per_cu = per_cu; | |
2375 | item->next = NULL; | |
2376 | ||
2377 | if (dwarf2_queue == NULL) | |
2378 | dwarf2_queue = item; | |
2379 | else | |
2380 | dwarf2_queue_tail->next = item; | |
2381 | ||
2382 | dwarf2_queue_tail = item; | |
2383 | } | |
2384 | ||
2385 | /* Process the queue. */ | |
2386 | ||
2387 | static void | |
2388 | process_queue (struct objfile *objfile) | |
2389 | { | |
2390 | struct dwarf2_queue_item *item, *next_item; | |
2391 | ||
2392 | /* Initially, there is just one item on the queue. Load its DIEs, | |
2393 | and the DIEs of any other compilation units it requires, | |
2394 | transitively. */ | |
2395 | ||
2396 | for (item = dwarf2_queue; item != NULL; item = item->next) | |
2397 | { | |
2398 | /* Read in this compilation unit. This may add new items to | |
2399 | the end of the queue. */ | |
31ffec48 | 2400 | load_full_comp_unit (item->per_cu, objfile); |
10b3939b DJ |
2401 | |
2402 | item->per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
2403 | dwarf2_per_objfile->read_in_chain = item->per_cu; | |
2404 | ||
2405 | /* If this compilation unit has already had full symbols created, | |
2406 | reset the TYPE fields in each DIE. */ | |
31ffec48 | 2407 | if (item->per_cu->type_hash) |
10b3939b DJ |
2408 | reset_die_and_siblings_types (item->per_cu->cu->dies, |
2409 | item->per_cu->cu); | |
2410 | } | |
2411 | ||
2412 | /* Now everything left on the queue needs to be read in. Process | |
2413 | them, one at a time, removing from the queue as we finish. */ | |
2414 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) | |
2415 | { | |
31ffec48 | 2416 | if (item->per_cu->psymtab && !item->per_cu->psymtab->readin) |
10b3939b DJ |
2417 | process_full_comp_unit (item->per_cu); |
2418 | ||
2419 | item->per_cu->queued = 0; | |
2420 | next_item = item->next; | |
2421 | xfree (item); | |
2422 | } | |
2423 | ||
2424 | dwarf2_queue_tail = NULL; | |
2425 | } | |
2426 | ||
2427 | /* Free all allocated queue entries. This function only releases anything if | |
2428 | an error was thrown; if the queue was processed then it would have been | |
2429 | freed as we went along. */ | |
2430 | ||
2431 | static void | |
2432 | dwarf2_release_queue (void *dummy) | |
2433 | { | |
2434 | struct dwarf2_queue_item *item, *last; | |
2435 | ||
2436 | item = dwarf2_queue; | |
2437 | while (item) | |
2438 | { | |
2439 | /* Anything still marked queued is likely to be in an | |
2440 | inconsistent state, so discard it. */ | |
2441 | if (item->per_cu->queued) | |
2442 | { | |
2443 | if (item->per_cu->cu != NULL) | |
2444 | free_one_cached_comp_unit (item->per_cu->cu); | |
2445 | item->per_cu->queued = 0; | |
2446 | } | |
2447 | ||
2448 | last = item; | |
2449 | item = item->next; | |
2450 | xfree (last); | |
2451 | } | |
2452 | ||
2453 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2454 | } | |
2455 | ||
2456 | /* Read in full symbols for PST, and anything it depends on. */ | |
2457 | ||
c906108c | 2458 | static void |
fba45db2 | 2459 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 2460 | { |
10b3939b | 2461 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 2462 | struct cleanup *back_to; |
aaa75496 JB |
2463 | int i; |
2464 | ||
2465 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2466 | if (!pst->dependencies[i]->readin) | |
2467 | { | |
2468 | /* Inform about additional files that need to be read in. */ | |
2469 | if (info_verbose) | |
2470 | { | |
a3f17187 | 2471 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
2472 | fputs_filtered (" ", gdb_stdout); |
2473 | wrap_here (""); | |
2474 | fputs_filtered ("and ", gdb_stdout); | |
2475 | wrap_here (""); | |
2476 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
2477 | wrap_here (""); /* Flush output */ | |
2478 | gdb_flush (gdb_stdout); | |
2479 | } | |
2480 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
2481 | } | |
2482 | ||
10b3939b DJ |
2483 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
2484 | ||
2485 | if (per_cu == NULL) | |
aaa75496 JB |
2486 | { |
2487 | /* It's an include file, no symbols to read for it. | |
2488 | Everything is in the parent symtab. */ | |
2489 | pst->readin = 1; | |
2490 | return; | |
2491 | } | |
c906108c | 2492 | |
10b3939b DJ |
2493 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2494 | ||
2495 | queue_comp_unit (per_cu); | |
2496 | ||
2497 | process_queue (pst->objfile); | |
2498 | ||
2499 | /* Age the cache, releasing compilation units that have not | |
2500 | been used recently. */ | |
2501 | age_cached_comp_units (); | |
2502 | ||
2503 | do_cleanups (back_to); | |
2504 | } | |
2505 | ||
2506 | /* Load the DIEs associated with PST and PER_CU into memory. */ | |
2507 | ||
2508 | static struct dwarf2_cu * | |
31ffec48 | 2509 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 2510 | { |
31ffec48 | 2511 | bfd *abfd = objfile->obfd; |
10b3939b DJ |
2512 | struct dwarf2_cu *cu; |
2513 | unsigned long offset; | |
fe1b8b76 | 2514 | gdb_byte *info_ptr; |
10b3939b DJ |
2515 | struct cleanup *back_to, *free_cu_cleanup; |
2516 | struct attribute *attr; | |
2517 | CORE_ADDR baseaddr; | |
6502dd73 | 2518 | |
c906108c | 2519 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 2520 | offset = per_cu->offset; |
6502dd73 DJ |
2521 | |
2522 | info_ptr = dwarf2_per_objfile->info_buffer + offset; | |
63d06c5c | 2523 | |
10b3939b DJ |
2524 | cu = xmalloc (sizeof (struct dwarf2_cu)); |
2525 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
c906108c | 2526 | |
10b3939b DJ |
2527 | /* If an error occurs while loading, release our storage. */ |
2528 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 2529 | |
31ffec48 | 2530 | cu->objfile = objfile; |
e7c27a73 | 2531 | |
c906108c | 2532 | /* read in the comp_unit header */ |
10b3939b | 2533 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c SS |
2534 | |
2535 | /* Read the abbrevs for this compilation unit */ | |
10b3939b DJ |
2536 | dwarf2_read_abbrevs (abfd, cu); |
2537 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2538 | ||
2539 | cu->header.offset = offset; | |
c906108c | 2540 | |
10b3939b DJ |
2541 | cu->per_cu = per_cu; |
2542 | per_cu->cu = cu; | |
e142c38c | 2543 | |
10b3939b DJ |
2544 | /* We use this obstack for block values in dwarf_alloc_block. */ |
2545 | obstack_init (&cu->comp_unit_obstack); | |
2546 | ||
2547 | cu->dies = read_comp_unit (info_ptr, abfd, cu); | |
2548 | ||
2549 | /* We try not to read any attributes in this function, because not | |
2550 | all objfiles needed for references have been loaded yet, and symbol | |
2551 | table processing isn't initialized. But we have to set the CU language, | |
2552 | or we won't be able to build types correctly. */ | |
2553 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
2554 | if (attr) | |
2555 | set_cu_language (DW_UNSND (attr), cu); | |
2556 | else | |
2557 | set_cu_language (language_minimal, cu); | |
2558 | ||
2559 | do_cleanups (back_to); | |
e142c38c | 2560 | |
10b3939b DJ |
2561 | /* We've successfully allocated this compilation unit. Let our caller |
2562 | clean it up when finished with it. */ | |
2563 | discard_cleanups (free_cu_cleanup); | |
c906108c | 2564 | |
10b3939b DJ |
2565 | return cu; |
2566 | } | |
2567 | ||
2568 | /* Generate full symbol information for PST and CU, whose DIEs have | |
2569 | already been loaded into memory. */ | |
2570 | ||
2571 | static void | |
2572 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2573 | { | |
2574 | struct partial_symtab *pst = per_cu->psymtab; | |
2575 | struct dwarf2_cu *cu = per_cu->cu; | |
2576 | struct objfile *objfile = pst->objfile; | |
2577 | bfd *abfd = objfile->obfd; | |
2578 | CORE_ADDR lowpc, highpc; | |
2579 | struct symtab *symtab; | |
2580 | struct cleanup *back_to; | |
2581 | struct attribute *attr; | |
2582 | CORE_ADDR baseaddr; | |
2583 | ||
2584 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2585 | ||
2586 | /* We're in the global namespace. */ | |
2587 | processing_current_prefix = ""; | |
2588 | ||
2589 | buildsym_init (); | |
2590 | back_to = make_cleanup (really_free_pendings, NULL); | |
2591 | ||
2592 | cu->list_in_scope = &file_symbols; | |
c906108c | 2593 | |
0d53c4c4 DJ |
2594 | /* Find the base address of the compilation unit for range lists and |
2595 | location lists. It will normally be specified by DW_AT_low_pc. | |
2596 | In DWARF-3 draft 4, the base address could be overridden by | |
2597 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2598 | compilation units with discontinuous ranges. */ | |
2599 | ||
10b3939b DJ |
2600 | cu->header.base_known = 0; |
2601 | cu->header.base_address = 0; | |
0d53c4c4 | 2602 | |
10b3939b | 2603 | attr = dwarf2_attr (cu->dies, DW_AT_entry_pc, cu); |
0d53c4c4 DJ |
2604 | if (attr) |
2605 | { | |
10b3939b DJ |
2606 | cu->header.base_address = DW_ADDR (attr); |
2607 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2608 | } |
2609 | else | |
2610 | { | |
10b3939b | 2611 | attr = dwarf2_attr (cu->dies, DW_AT_low_pc, cu); |
0d53c4c4 DJ |
2612 | if (attr) |
2613 | { | |
10b3939b DJ |
2614 | cu->header.base_address = DW_ADDR (attr); |
2615 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2616 | } |
2617 | } | |
2618 | ||
c906108c | 2619 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 2620 | process_die (cu->dies, cu); |
c906108c | 2621 | |
fae299cd DC |
2622 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
2623 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
2624 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 2625 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 2626 | |
613e1657 | 2627 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2628 | |
2629 | /* Set symtab language to language from DW_AT_language. | |
2630 | If the compilation is from a C file generated by language preprocessors, | |
2631 | do not set the language if it was already deduced by start_subfile. */ | |
2632 | if (symtab != NULL | |
10b3939b | 2633 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 2634 | { |
10b3939b | 2635 | symtab->language = cu->language; |
c906108c SS |
2636 | } |
2637 | pst->symtab = symtab; | |
2638 | pst->readin = 1; | |
c906108c SS |
2639 | |
2640 | do_cleanups (back_to); | |
2641 | } | |
2642 | ||
2643 | /* Process a die and its children. */ | |
2644 | ||
2645 | static void | |
e7c27a73 | 2646 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2647 | { |
2648 | switch (die->tag) | |
2649 | { | |
2650 | case DW_TAG_padding: | |
2651 | break; | |
2652 | case DW_TAG_compile_unit: | |
e7c27a73 | 2653 | read_file_scope (die, cu); |
c906108c SS |
2654 | break; |
2655 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
2656 | read_subroutine_type (die, cu); |
2657 | read_func_scope (die, cu); | |
c906108c SS |
2658 | break; |
2659 | case DW_TAG_inlined_subroutine: | |
2660 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2661 | They could be used to set breakpoints on all inlined instances |
2662 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2663 | break; |
2664 | case DW_TAG_lexical_block: | |
14898363 L |
2665 | case DW_TAG_try_block: |
2666 | case DW_TAG_catch_block: | |
e7c27a73 | 2667 | read_lexical_block_scope (die, cu); |
c906108c SS |
2668 | break; |
2669 | case DW_TAG_class_type: | |
2670 | case DW_TAG_structure_type: | |
2671 | case DW_TAG_union_type: | |
134d01f1 DJ |
2672 | read_structure_type (die, cu); |
2673 | process_structure_scope (die, cu); | |
c906108c SS |
2674 | break; |
2675 | case DW_TAG_enumeration_type: | |
134d01f1 DJ |
2676 | read_enumeration_type (die, cu); |
2677 | process_enumeration_scope (die, cu); | |
c906108c | 2678 | break; |
134d01f1 DJ |
2679 | |
2680 | /* FIXME drow/2004-03-14: These initialize die->type, but do not create | |
2681 | a symbol or process any children. Therefore it doesn't do anything | |
2682 | that won't be done on-demand by read_type_die. */ | |
c906108c | 2683 | case DW_TAG_subroutine_type: |
e7c27a73 | 2684 | read_subroutine_type (die, cu); |
c906108c | 2685 | break; |
72019c9c GM |
2686 | case DW_TAG_set_type: |
2687 | read_set_type (die, cu); | |
2688 | break; | |
c906108c | 2689 | case DW_TAG_array_type: |
e7c27a73 | 2690 | read_array_type (die, cu); |
c906108c SS |
2691 | break; |
2692 | case DW_TAG_pointer_type: | |
e7c27a73 | 2693 | read_tag_pointer_type (die, cu); |
c906108c SS |
2694 | break; |
2695 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 2696 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
2697 | break; |
2698 | case DW_TAG_reference_type: | |
e7c27a73 | 2699 | read_tag_reference_type (die, cu); |
c906108c SS |
2700 | break; |
2701 | case DW_TAG_string_type: | |
e7c27a73 | 2702 | read_tag_string_type (die, cu); |
c906108c | 2703 | break; |
134d01f1 DJ |
2704 | /* END FIXME */ |
2705 | ||
c906108c | 2706 | case DW_TAG_base_type: |
e7c27a73 | 2707 | read_base_type (die, cu); |
134d01f1 DJ |
2708 | /* Add a typedef symbol for the type definition, if it has a |
2709 | DW_AT_name. */ | |
2710 | new_symbol (die, die->type, cu); | |
c906108c | 2711 | break; |
a02abb62 JB |
2712 | case DW_TAG_subrange_type: |
2713 | read_subrange_type (die, cu); | |
134d01f1 DJ |
2714 | /* Add a typedef symbol for the type definition, if it has a |
2715 | DW_AT_name. */ | |
2716 | new_symbol (die, die->type, cu); | |
a02abb62 | 2717 | break; |
c906108c | 2718 | case DW_TAG_common_block: |
e7c27a73 | 2719 | read_common_block (die, cu); |
c906108c SS |
2720 | break; |
2721 | case DW_TAG_common_inclusion: | |
2722 | break; | |
d9fa45fe | 2723 | case DW_TAG_namespace: |
63d06c5c | 2724 | processing_has_namespace_info = 1; |
e7c27a73 | 2725 | read_namespace (die, cu); |
d9fa45fe DC |
2726 | break; |
2727 | case DW_TAG_imported_declaration: | |
2728 | case DW_TAG_imported_module: | |
2729 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2730 | information contained in these. DW_TAG_imported_declaration | |
2731 | dies shouldn't have children; DW_TAG_imported_module dies | |
2732 | shouldn't in the C++ case, but conceivably could in the | |
2733 | Fortran case, so we'll have to replace this gdb_assert if | |
2734 | Fortran compilers start generating that info. */ | |
63d06c5c | 2735 | processing_has_namespace_info = 1; |
639d11d3 | 2736 | gdb_assert (die->child == NULL); |
d9fa45fe | 2737 | break; |
c906108c | 2738 | default: |
e7c27a73 | 2739 | new_symbol (die, NULL, cu); |
c906108c SS |
2740 | break; |
2741 | } | |
2742 | } | |
2743 | ||
5fb290d7 | 2744 | static void |
e142c38c | 2745 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2746 | { |
e142c38c | 2747 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2748 | } |
2749 | ||
c906108c | 2750 | static void |
e7c27a73 | 2751 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2752 | { |
e7c27a73 DJ |
2753 | struct objfile *objfile = cu->objfile; |
2754 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2755 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2756 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2757 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2758 | struct attribute *attr; | |
2759 | char *name = "<unknown>"; | |
2760 | char *comp_dir = NULL; | |
2761 | struct die_info *child_die; | |
2762 | bfd *abfd = objfile->obfd; | |
debd256d | 2763 | struct line_header *line_header = 0; |
e142c38c DJ |
2764 | CORE_ADDR baseaddr; |
2765 | ||
2766 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2767 | |
fae299cd | 2768 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2769 | |
2770 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2771 | from finish_block. */ | |
2acceee2 | 2772 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2773 | lowpc = highpc; |
2774 | lowpc += baseaddr; | |
2775 | highpc += baseaddr; | |
2776 | ||
e142c38c | 2777 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2778 | if (attr) |
2779 | { | |
2780 | name = DW_STRING (attr); | |
2781 | } | |
e142c38c | 2782 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c SS |
2783 | if (attr) |
2784 | { | |
2785 | comp_dir = DW_STRING (attr); | |
2786 | if (comp_dir) | |
2787 | { | |
2788 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2789 | directory, get rid of it. */ | |
2790 | char *cp = strchr (comp_dir, ':'); | |
2791 | ||
2792 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
2793 | comp_dir = cp + 1; | |
2794 | } | |
2795 | } | |
2796 | ||
e142c38c | 2797 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2798 | if (attr) |
2799 | { | |
e142c38c | 2800 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2801 | } |
2802 | ||
b0f35d58 DL |
2803 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
2804 | if (attr) | |
2805 | cu->producer = DW_STRING (attr); | |
2806 | ||
c906108c SS |
2807 | /* We assume that we're processing GCC output. */ |
2808 | processing_gcc_compilation = 2; | |
2809 | #if 0 | |
c5aa993b JM |
2810 | /* FIXME:Do something here. */ |
2811 | if (dip->at_producer != NULL) | |
c906108c SS |
2812 | { |
2813 | handle_producer (dip->at_producer); | |
2814 | } | |
2815 | #endif | |
2816 | ||
2817 | /* The compilation unit may be in a different language or objfile, | |
2818 | zero out all remembered fundamental types. */ | |
e142c38c | 2819 | memset (cu->ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *)); |
c906108c SS |
2820 | |
2821 | start_symtab (name, comp_dir, lowpc); | |
2822 | record_debugformat ("DWARF 2"); | |
2823 | ||
e142c38c | 2824 | initialize_cu_func_list (cu); |
c906108c SS |
2825 | |
2826 | /* Process all dies in compilation unit. */ | |
639d11d3 | 2827 | if (die->child != NULL) |
c906108c | 2828 | { |
639d11d3 | 2829 | child_die = die->child; |
c906108c SS |
2830 | while (child_die && child_die->tag) |
2831 | { | |
e7c27a73 | 2832 | process_die (child_die, cu); |
c906108c SS |
2833 | child_die = sibling_die (child_die); |
2834 | } | |
2835 | } | |
5fb290d7 DJ |
2836 | |
2837 | /* Decode line number information if present. */ | |
e142c38c | 2838 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2839 | if (attr) |
2840 | { | |
debd256d | 2841 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2842 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2843 | if (line_header) |
2844 | { | |
2845 | make_cleanup ((make_cleanup_ftype *) free_line_header, | |
2846 | (void *) line_header); | |
aaa75496 | 2847 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 2848 | } |
5fb290d7 | 2849 | } |
debd256d | 2850 | |
2e276125 JB |
2851 | /* Decode macro information, if present. Dwarf 2 macro information |
2852 | refers to information in the line number info statement program | |
2853 | header, so we can only read it if we've read the header | |
2854 | successfully. */ | |
e142c38c | 2855 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2856 | if (attr && line_header) |
2e276125 JB |
2857 | { |
2858 | unsigned int macro_offset = DW_UNSND (attr); | |
2859 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2860 | comp_dir, abfd, cu); |
2e276125 | 2861 | } |
debd256d | 2862 | do_cleanups (back_to); |
5fb290d7 DJ |
2863 | } |
2864 | ||
2865 | static void | |
e142c38c DJ |
2866 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2867 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2868 | { |
2869 | struct function_range *thisfn; | |
2870 | ||
2871 | thisfn = (struct function_range *) | |
7b5a2f43 | 2872 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
2873 | thisfn->name = name; |
2874 | thisfn->lowpc = lowpc; | |
2875 | thisfn->highpc = highpc; | |
2876 | thisfn->seen_line = 0; | |
2877 | thisfn->next = NULL; | |
2878 | ||
e142c38c DJ |
2879 | if (cu->last_fn == NULL) |
2880 | cu->first_fn = thisfn; | |
5fb290d7 | 2881 | else |
e142c38c | 2882 | cu->last_fn->next = thisfn; |
5fb290d7 | 2883 | |
e142c38c | 2884 | cu->last_fn = thisfn; |
c906108c SS |
2885 | } |
2886 | ||
2887 | static void | |
e7c27a73 | 2888 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2889 | { |
e7c27a73 | 2890 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2891 | struct context_stack *new; |
c906108c SS |
2892 | CORE_ADDR lowpc; |
2893 | CORE_ADDR highpc; | |
2894 | struct die_info *child_die; | |
2895 | struct attribute *attr; | |
2896 | char *name; | |
fdde2d81 DC |
2897 | const char *previous_prefix = processing_current_prefix; |
2898 | struct cleanup *back_to = NULL; | |
e142c38c | 2899 | CORE_ADDR baseaddr; |
c906108c | 2900 | |
e142c38c DJ |
2901 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2902 | ||
2903 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2904 | |
2905 | /* Ignore functions with missing or empty names and functions with | |
2906 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2907 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2908 | return; |
2909 | ||
987504bb JJ |
2910 | if (cu->language == language_cplus |
2911 | || cu->language == language_java) | |
fdde2d81 | 2912 | { |
086ed43d | 2913 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2914 | |
2a35147e JB |
2915 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2916 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2917 | given the code | |
2918 | ||
2919 | namespace N { | |
2920 | void foo() { | |
2921 | // Definition of N::foo. | |
2922 | } | |
2923 | } | |
2924 | ||
2925 | then we'll have a tree of DIEs like this: | |
2926 | ||
2927 | 1: DW_TAG_compile_unit | |
2928 | 2: DW_TAG_namespace // N | |
2929 | 3: DW_TAG_subprogram // declaration of N::foo | |
2930 | 4: DW_TAG_subprogram // definition of N::foo | |
2931 | DW_AT_specification // refers to die #3 | |
2932 | ||
2933 | Thus, when processing die #4, we have to pretend that we're | |
2934 | in the context of its DW_AT_specification, namely the contex | |
2935 | of die #3. */ | |
fdde2d81 DC |
2936 | |
2937 | if (spec_die != NULL) | |
2938 | { | |
e142c38c | 2939 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
2940 | processing_current_prefix = specification_prefix; |
2941 | back_to = make_cleanup (xfree, specification_prefix); | |
2942 | } | |
2943 | } | |
2944 | ||
c906108c SS |
2945 | lowpc += baseaddr; |
2946 | highpc += baseaddr; | |
2947 | ||
5fb290d7 | 2948 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 2949 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 2950 | |
c906108c | 2951 | new = push_context (0, lowpc); |
e7c27a73 | 2952 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 2953 | |
4cecd739 DJ |
2954 | /* If there is a location expression for DW_AT_frame_base, record |
2955 | it. */ | |
e142c38c | 2956 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 2957 | if (attr) |
c034e007 AC |
2958 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
2959 | expression is being recorded directly in the function's symbol | |
2960 | and not in a separate frame-base object. I guess this hack is | |
2961 | to avoid adding some sort of frame-base adjunct/annex to the | |
2962 | function's symbol :-(. The problem with doing this is that it | |
2963 | results in a function symbol with a location expression that | |
2964 | has nothing to do with the location of the function, ouch! The | |
2965 | relationship should be: a function's symbol has-a frame base; a | |
2966 | frame-base has-a location expression. */ | |
e7c27a73 | 2967 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 2968 | |
e142c38c | 2969 | cu->list_in_scope = &local_symbols; |
c906108c | 2970 | |
639d11d3 | 2971 | if (die->child != NULL) |
c906108c | 2972 | { |
639d11d3 | 2973 | child_die = die->child; |
c906108c SS |
2974 | while (child_die && child_die->tag) |
2975 | { | |
e7c27a73 | 2976 | process_die (child_die, cu); |
c906108c SS |
2977 | child_die = sibling_die (child_die); |
2978 | } | |
2979 | } | |
2980 | ||
2981 | new = pop_context (); | |
2982 | /* Make a block for the local symbols within. */ | |
2983 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2984 | lowpc, highpc, objfile); | |
208d8187 JB |
2985 | |
2986 | /* In C++, we can have functions nested inside functions (e.g., when | |
2987 | a function declares a class that has methods). This means that | |
2988 | when we finish processing a function scope, we may need to go | |
2989 | back to building a containing block's symbol lists. */ | |
2990 | local_symbols = new->locals; | |
2991 | param_symbols = new->params; | |
2992 | ||
921e78cf JB |
2993 | /* If we've finished processing a top-level function, subsequent |
2994 | symbols go in the file symbol list. */ | |
2995 | if (outermost_context_p ()) | |
e142c38c | 2996 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
2997 | |
2998 | processing_current_prefix = previous_prefix; | |
2999 | if (back_to != NULL) | |
3000 | do_cleanups (back_to); | |
c906108c SS |
3001 | } |
3002 | ||
3003 | /* Process all the DIES contained within a lexical block scope. Start | |
3004 | a new scope, process the dies, and then close the scope. */ | |
3005 | ||
3006 | static void | |
e7c27a73 | 3007 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3008 | { |
e7c27a73 | 3009 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 3010 | struct context_stack *new; |
c906108c SS |
3011 | CORE_ADDR lowpc, highpc; |
3012 | struct die_info *child_die; | |
e142c38c DJ |
3013 | CORE_ADDR baseaddr; |
3014 | ||
3015 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3016 | |
3017 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
3018 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
3019 | as multiple lexical blocks? Handling children in a sane way would | |
3020 | be nasty. Might be easier to properly extend generic blocks to | |
3021 | describe ranges. */ | |
e7c27a73 | 3022 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
3023 | return; |
3024 | lowpc += baseaddr; | |
3025 | highpc += baseaddr; | |
3026 | ||
3027 | push_context (0, lowpc); | |
639d11d3 | 3028 | if (die->child != NULL) |
c906108c | 3029 | { |
639d11d3 | 3030 | child_die = die->child; |
c906108c SS |
3031 | while (child_die && child_die->tag) |
3032 | { | |
e7c27a73 | 3033 | process_die (child_die, cu); |
c906108c SS |
3034 | child_die = sibling_die (child_die); |
3035 | } | |
3036 | } | |
3037 | new = pop_context (); | |
3038 | ||
3039 | if (local_symbols != NULL) | |
3040 | { | |
3041 | finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
3042 | highpc, objfile); | |
3043 | } | |
3044 | local_symbols = new->locals; | |
3045 | } | |
3046 | ||
af34e669 DJ |
3047 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
3048 | are present and valid, otherwise, return 0. Return -1 if the range is | |
3049 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 3050 | static int |
af34e669 | 3051 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 3052 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c | 3053 | { |
e7c27a73 DJ |
3054 | struct objfile *objfile = cu->objfile; |
3055 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 3056 | struct attribute *attr; |
af34e669 DJ |
3057 | bfd *obfd = objfile->obfd; |
3058 | CORE_ADDR low = 0; | |
3059 | CORE_ADDR high = 0; | |
3060 | int ret = 0; | |
c906108c | 3061 | |
e142c38c | 3062 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 3063 | if (attr) |
af34e669 DJ |
3064 | { |
3065 | high = DW_ADDR (attr); | |
e142c38c | 3066 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
3067 | if (attr) |
3068 | low = DW_ADDR (attr); | |
3069 | else | |
3070 | /* Found high w/o low attribute. */ | |
3071 | return 0; | |
3072 | ||
3073 | /* Found consecutive range of addresses. */ | |
3074 | ret = 1; | |
3075 | } | |
c906108c | 3076 | else |
af34e669 | 3077 | { |
e142c38c | 3078 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
3079 | if (attr != NULL) |
3080 | { | |
3081 | unsigned int addr_size = cu_header->addr_size; | |
3082 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3083 | /* Value of the DW_AT_ranges attribute is the offset in the | |
a604369a | 3084 | .debug_ranges section. */ |
af34e669 DJ |
3085 | unsigned int offset = DW_UNSND (attr); |
3086 | /* Base address selection entry. */ | |
0d53c4c4 DJ |
3087 | CORE_ADDR base; |
3088 | int found_base; | |
891d2f0b | 3089 | unsigned int dummy; |
fe1b8b76 | 3090 | gdb_byte *buffer; |
af34e669 DJ |
3091 | CORE_ADDR marker; |
3092 | int low_set; | |
3093 | ||
0d53c4c4 DJ |
3094 | found_base = cu_header->base_known; |
3095 | base = cu_header->base_address; | |
a604369a | 3096 | |
6502dd73 | 3097 | if (offset >= dwarf2_per_objfile->ranges_size) |
a604369a KB |
3098 | { |
3099 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3100 | _("Offset %d out of bounds for DW_AT_ranges attribute"), |
a604369a KB |
3101 | offset); |
3102 | return 0; | |
3103 | } | |
6502dd73 | 3104 | buffer = dwarf2_per_objfile->ranges_buffer + offset; |
af34e669 | 3105 | |
af34e669 | 3106 | /* Read in the largest possible address. */ |
e7c27a73 | 3107 | marker = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
3108 | if ((marker & mask) == mask) |
3109 | { | |
3110 | /* If we found the largest possible address, then | |
3111 | read the base address. */ | |
e7c27a73 | 3112 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
3113 | buffer += 2 * addr_size; |
3114 | offset += 2 * addr_size; | |
3115 | found_base = 1; | |
3116 | } | |
3117 | ||
3118 | low_set = 0; | |
3119 | ||
3120 | while (1) | |
3121 | { | |
3122 | CORE_ADDR range_beginning, range_end; | |
3123 | ||
e7c27a73 | 3124 | range_beginning = read_address (obfd, buffer, cu, &dummy); |
af34e669 | 3125 | buffer += addr_size; |
e7c27a73 | 3126 | range_end = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
3127 | buffer += addr_size; |
3128 | offset += 2 * addr_size; | |
3129 | ||
3130 | /* An end of list marker is a pair of zero addresses. */ | |
3131 | if (range_beginning == 0 && range_end == 0) | |
3132 | /* Found the end of list entry. */ | |
3133 | break; | |
3134 | ||
3135 | /* Each base address selection entry is a pair of 2 values. | |
3136 | The first is the largest possible address, the second is | |
3137 | the base address. Check for a base address here. */ | |
3138 | if ((range_beginning & mask) == mask) | |
3139 | { | |
3140 | /* If we found the largest possible address, then | |
3141 | read the base address. */ | |
e7c27a73 | 3142 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
3143 | found_base = 1; |
3144 | continue; | |
3145 | } | |
3146 | ||
3147 | if (!found_base) | |
3148 | { | |
3149 | /* We have no valid base address for the ranges | |
3150 | data. */ | |
3151 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3152 | _("Invalid .debug_ranges data (no base address)")); |
af34e669 DJ |
3153 | return 0; |
3154 | } | |
3155 | ||
8f05cde5 DJ |
3156 | range_beginning += base; |
3157 | range_end += base; | |
3158 | ||
af34e669 DJ |
3159 | /* FIXME: This is recording everything as a low-high |
3160 | segment of consecutive addresses. We should have a | |
3161 | data structure for discontiguous block ranges | |
3162 | instead. */ | |
3163 | if (! low_set) | |
3164 | { | |
3165 | low = range_beginning; | |
3166 | high = range_end; | |
3167 | low_set = 1; | |
3168 | } | |
3169 | else | |
3170 | { | |
3171 | if (range_beginning < low) | |
3172 | low = range_beginning; | |
3173 | if (range_end > high) | |
3174 | high = range_end; | |
3175 | } | |
3176 | } | |
3177 | ||
3178 | if (! low_set) | |
3179 | /* If the first entry is an end-of-list marker, the range | |
3180 | describes an empty scope, i.e. no instructions. */ | |
3181 | return 0; | |
3182 | ||
3183 | ret = -1; | |
3184 | } | |
3185 | } | |
c906108c SS |
3186 | |
3187 | if (high < low) | |
3188 | return 0; | |
3189 | ||
3190 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
3191 | eliminate duplicate copies of functions and vtables and such. | |
3192 | The linker will arbitrarily choose one and discard the others. | |
3193 | The AT_*_pc values for such functions refer to local labels in | |
3194 | these sections. If the section from that file was discarded, the | |
3195 | labels are not in the output, so the relocs get a value of 0. | |
3196 | If this is a discarded function, mark the pc bounds as invalid, | |
3197 | so that GDB will ignore it. */ | |
72dca2f5 | 3198 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
3199 | return 0; |
3200 | ||
3201 | *lowpc = low; | |
3202 | *highpc = high; | |
af34e669 | 3203 | return ret; |
c906108c SS |
3204 | } |
3205 | ||
fae299cd DC |
3206 | /* Get the low and high pc's represented by the scope DIE, and store |
3207 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
3208 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
3209 | ||
3210 | static void | |
3211 | get_scope_pc_bounds (struct die_info *die, | |
3212 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3213 | struct dwarf2_cu *cu) | |
3214 | { | |
3215 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
3216 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
3217 | CORE_ADDR current_low, current_high; | |
3218 | ||
3219 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
3220 | { | |
3221 | best_low = current_low; | |
3222 | best_high = current_high; | |
3223 | } | |
3224 | else | |
3225 | { | |
3226 | struct die_info *child = die->child; | |
3227 | ||
3228 | while (child && child->tag) | |
3229 | { | |
3230 | switch (child->tag) { | |
3231 | case DW_TAG_subprogram: | |
3232 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
3233 | { | |
3234 | best_low = min (best_low, current_low); | |
3235 | best_high = max (best_high, current_high); | |
3236 | } | |
3237 | break; | |
3238 | case DW_TAG_namespace: | |
3239 | /* FIXME: carlton/2004-01-16: Should we do this for | |
3240 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
3241 | that current GCC's always emit the DIEs corresponding | |
3242 | to definitions of methods of classes as children of a | |
3243 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
3244 | the DIEs giving the declarations, which could be | |
3245 | anywhere). But I don't see any reason why the | |
3246 | standards says that they have to be there. */ | |
3247 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
3248 | ||
3249 | if (current_low != ((CORE_ADDR) -1)) | |
3250 | { | |
3251 | best_low = min (best_low, current_low); | |
3252 | best_high = max (best_high, current_high); | |
3253 | } | |
3254 | break; | |
3255 | default: | |
3256 | /* Ignore. */ | |
3257 | break; | |
3258 | } | |
3259 | ||
3260 | child = sibling_die (child); | |
3261 | } | |
3262 | } | |
3263 | ||
3264 | *lowpc = best_low; | |
3265 | *highpc = best_high; | |
3266 | } | |
3267 | ||
c906108c SS |
3268 | /* Add an aggregate field to the field list. */ |
3269 | ||
3270 | static void | |
107d2387 | 3271 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
3272 | struct dwarf2_cu *cu) |
3273 | { | |
3274 | struct objfile *objfile = cu->objfile; | |
c906108c SS |
3275 | struct nextfield *new_field; |
3276 | struct attribute *attr; | |
3277 | struct field *fp; | |
3278 | char *fieldname = ""; | |
3279 | ||
3280 | /* Allocate a new field list entry and link it in. */ | |
3281 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3282 | make_cleanup (xfree, new_field); |
c906108c SS |
3283 | memset (new_field, 0, sizeof (struct nextfield)); |
3284 | new_field->next = fip->fields; | |
3285 | fip->fields = new_field; | |
3286 | fip->nfields++; | |
3287 | ||
3288 | /* Handle accessibility and virtuality of field. | |
3289 | The default accessibility for members is public, the default | |
3290 | accessibility for inheritance is private. */ | |
3291 | if (die->tag != DW_TAG_inheritance) | |
3292 | new_field->accessibility = DW_ACCESS_public; | |
3293 | else | |
3294 | new_field->accessibility = DW_ACCESS_private; | |
3295 | new_field->virtuality = DW_VIRTUALITY_none; | |
3296 | ||
e142c38c | 3297 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3298 | if (attr) |
3299 | new_field->accessibility = DW_UNSND (attr); | |
3300 | if (new_field->accessibility != DW_ACCESS_public) | |
3301 | fip->non_public_fields = 1; | |
e142c38c | 3302 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
3303 | if (attr) |
3304 | new_field->virtuality = DW_UNSND (attr); | |
3305 | ||
3306 | fp = &new_field->field; | |
a9a9bd0f | 3307 | |
e142c38c | 3308 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 3309 | { |
a9a9bd0f DC |
3310 | /* Data member other than a C++ static data member. */ |
3311 | ||
c906108c | 3312 | /* Get type of field. */ |
e7c27a73 | 3313 | fp->type = die_type (die, cu); |
c906108c | 3314 | |
01ad7f36 DJ |
3315 | FIELD_STATIC_KIND (*fp) = 0; |
3316 | ||
c906108c | 3317 | /* Get bit size of field (zero if none). */ |
e142c38c | 3318 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
3319 | if (attr) |
3320 | { | |
3321 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
3322 | } | |
3323 | else | |
3324 | { | |
3325 | FIELD_BITSIZE (*fp) = 0; | |
3326 | } | |
3327 | ||
3328 | /* Get bit offset of field. */ | |
e142c38c | 3329 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
3330 | if (attr) |
3331 | { | |
3332 | FIELD_BITPOS (*fp) = | |
e7c27a73 | 3333 | decode_locdesc (DW_BLOCK (attr), cu) * bits_per_byte; |
c906108c SS |
3334 | } |
3335 | else | |
3336 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 3337 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
3338 | if (attr) |
3339 | { | |
3340 | if (BITS_BIG_ENDIAN) | |
3341 | { | |
3342 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
3343 | additional bit offset from the MSB of the containing |
3344 | anonymous object to the MSB of the field. We don't | |
3345 | have to do anything special since we don't need to | |
3346 | know the size of the anonymous object. */ | |
c906108c SS |
3347 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
3348 | } | |
3349 | else | |
3350 | { | |
3351 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
3352 | MSB of the anonymous object, subtract off the number of |
3353 | bits from the MSB of the field to the MSB of the | |
3354 | object, and then subtract off the number of bits of | |
3355 | the field itself. The result is the bit offset of | |
3356 | the LSB of the field. */ | |
c906108c SS |
3357 | int anonymous_size; |
3358 | int bit_offset = DW_UNSND (attr); | |
3359 | ||
e142c38c | 3360 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3361 | if (attr) |
3362 | { | |
3363 | /* The size of the anonymous object containing | |
3364 | the bit field is explicit, so use the | |
3365 | indicated size (in bytes). */ | |
3366 | anonymous_size = DW_UNSND (attr); | |
3367 | } | |
3368 | else | |
3369 | { | |
3370 | /* The size of the anonymous object containing | |
3371 | the bit field must be inferred from the type | |
3372 | attribute of the data member containing the | |
3373 | bit field. */ | |
3374 | anonymous_size = TYPE_LENGTH (fp->type); | |
3375 | } | |
3376 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
3377 | - bit_offset - FIELD_BITSIZE (*fp); | |
3378 | } | |
3379 | } | |
3380 | ||
3381 | /* Get name of field. */ | |
e142c38c | 3382 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3383 | if (attr && DW_STRING (attr)) |
3384 | fieldname = DW_STRING (attr); | |
d8151005 DJ |
3385 | |
3386 | /* The name is already allocated along with this objfile, so we don't | |
3387 | need to duplicate it for the type. */ | |
3388 | fp->name = fieldname; | |
c906108c SS |
3389 | |
3390 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 3391 | pointer or virtual base class pointer) to private. */ |
e142c38c | 3392 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
3393 | { |
3394 | new_field->accessibility = DW_ACCESS_private; | |
3395 | fip->non_public_fields = 1; | |
3396 | } | |
3397 | } | |
a9a9bd0f | 3398 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 3399 | { |
a9a9bd0f DC |
3400 | /* C++ static member. */ |
3401 | ||
3402 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
3403 | is a declaration, but all versions of G++ as of this writing | |
3404 | (so through at least 3.2.1) incorrectly generate | |
3405 | DW_TAG_variable tags. */ | |
3406 | ||
c906108c | 3407 | char *physname; |
c906108c | 3408 | |
a9a9bd0f | 3409 | /* Get name of field. */ |
e142c38c | 3410 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
3411 | if (attr && DW_STRING (attr)) |
3412 | fieldname = DW_STRING (attr); | |
3413 | else | |
c906108c SS |
3414 | return; |
3415 | ||
2df3850c | 3416 | /* Get physical name. */ |
e142c38c | 3417 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 3418 | |
d8151005 DJ |
3419 | /* The name is already allocated along with this objfile, so we don't |
3420 | need to duplicate it for the type. */ | |
3421 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 3422 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 3423 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
3424 | } |
3425 | else if (die->tag == DW_TAG_inheritance) | |
3426 | { | |
3427 | /* C++ base class field. */ | |
e142c38c | 3428 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 3429 | if (attr) |
e7c27a73 | 3430 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 3431 | * bits_per_byte); |
c906108c | 3432 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 3433 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 3434 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
3435 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
3436 | fip->nbaseclasses++; | |
3437 | } | |
3438 | } | |
3439 | ||
3440 | /* Create the vector of fields, and attach it to the type. */ | |
3441 | ||
3442 | static void | |
fba45db2 | 3443 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3444 | struct dwarf2_cu *cu) |
c906108c SS |
3445 | { |
3446 | int nfields = fip->nfields; | |
3447 | ||
3448 | /* Record the field count, allocate space for the array of fields, | |
3449 | and create blank accessibility bitfields if necessary. */ | |
3450 | TYPE_NFIELDS (type) = nfields; | |
3451 | TYPE_FIELDS (type) = (struct field *) | |
3452 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3453 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3454 | ||
3455 | if (fip->non_public_fields) | |
3456 | { | |
3457 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3458 | ||
3459 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3460 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3461 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3462 | ||
3463 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3464 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3465 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3466 | ||
3467 | TYPE_FIELD_IGNORE_BITS (type) = | |
3468 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3469 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3470 | } | |
3471 | ||
3472 | /* If the type has baseclasses, allocate and clear a bit vector for | |
3473 | TYPE_FIELD_VIRTUAL_BITS. */ | |
3474 | if (fip->nbaseclasses) | |
3475 | { | |
3476 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 3477 | unsigned char *pointer; |
c906108c SS |
3478 | |
3479 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
3480 | pointer = TYPE_ALLOC (type, num_bytes); |
3481 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
3482 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
3483 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
3484 | } | |
3485 | ||
3486 | /* Copy the saved-up fields into the field vector. Start from the head | |
3487 | of the list, adding to the tail of the field array, so that they end | |
3488 | up in the same order in the array in which they were added to the list. */ | |
3489 | while (nfields-- > 0) | |
3490 | { | |
3491 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
3492 | switch (fip->fields->accessibility) | |
3493 | { | |
c5aa993b JM |
3494 | case DW_ACCESS_private: |
3495 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3496 | break; | |
c906108c | 3497 | |
c5aa993b JM |
3498 | case DW_ACCESS_protected: |
3499 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3500 | break; | |
c906108c | 3501 | |
c5aa993b JM |
3502 | case DW_ACCESS_public: |
3503 | break; | |
c906108c | 3504 | |
c5aa993b JM |
3505 | default: |
3506 | /* Unknown accessibility. Complain and treat it as public. */ | |
3507 | { | |
e2e0b3e5 | 3508 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
4d3c2250 | 3509 | fip->fields->accessibility); |
c5aa993b JM |
3510 | } |
3511 | break; | |
c906108c SS |
3512 | } |
3513 | if (nfields < fip->nbaseclasses) | |
3514 | { | |
3515 | switch (fip->fields->virtuality) | |
3516 | { | |
c5aa993b JM |
3517 | case DW_VIRTUALITY_virtual: |
3518 | case DW_VIRTUALITY_pure_virtual: | |
3519 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
3520 | break; | |
c906108c SS |
3521 | } |
3522 | } | |
3523 | fip->fields = fip->fields->next; | |
3524 | } | |
3525 | } | |
3526 | ||
c906108c SS |
3527 | /* Add a member function to the proper fieldlist. */ |
3528 | ||
3529 | static void | |
107d2387 | 3530 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 3531 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 3532 | { |
e7c27a73 | 3533 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3534 | struct attribute *attr; |
3535 | struct fnfieldlist *flp; | |
3536 | int i; | |
3537 | struct fn_field *fnp; | |
3538 | char *fieldname; | |
3539 | char *physname; | |
3540 | struct nextfnfield *new_fnfield; | |
3541 | ||
2df3850c | 3542 | /* Get name of member function. */ |
e142c38c | 3543 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
3544 | if (attr && DW_STRING (attr)) |
3545 | fieldname = DW_STRING (attr); | |
c906108c | 3546 | else |
2df3850c | 3547 | return; |
c906108c | 3548 | |
2df3850c | 3549 | /* Get the mangled name. */ |
e142c38c | 3550 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
3551 | |
3552 | /* Look up member function name in fieldlist. */ | |
3553 | for (i = 0; i < fip->nfnfields; i++) | |
3554 | { | |
27bfe10e | 3555 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
3556 | break; |
3557 | } | |
3558 | ||
3559 | /* Create new list element if necessary. */ | |
3560 | if (i < fip->nfnfields) | |
3561 | flp = &fip->fnfieldlists[i]; | |
3562 | else | |
3563 | { | |
3564 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3565 | { | |
3566 | fip->fnfieldlists = (struct fnfieldlist *) | |
3567 | xrealloc (fip->fnfieldlists, | |
3568 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3569 | * sizeof (struct fnfieldlist)); |
c906108c | 3570 | if (fip->nfnfields == 0) |
c13c43fd | 3571 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
3572 | } |
3573 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
3574 | flp->name = fieldname; | |
3575 | flp->length = 0; | |
3576 | flp->head = NULL; | |
3577 | fip->nfnfields++; | |
3578 | } | |
3579 | ||
3580 | /* Create a new member function field and chain it to the field list | |
3581 | entry. */ | |
3582 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 3583 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
3584 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
3585 | new_fnfield->next = flp->head; | |
3586 | flp->head = new_fnfield; | |
3587 | flp->length++; | |
3588 | ||
3589 | /* Fill in the member function field info. */ | |
3590 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
3591 | /* The name is already allocated along with this objfile, so we don't |
3592 | need to duplicate it for the type. */ | |
3593 | fnp->physname = physname ? physname : ""; | |
c906108c SS |
3594 | fnp->type = alloc_type (objfile); |
3595 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
3596 | { | |
c906108c | 3597 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 3598 | |
e26fb1d7 DC |
3599 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
3600 | of the method itself (TYPE_CODE_METHOD). */ | |
3601 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
3602 | TYPE_TARGET_TYPE (die->type), |
3603 | TYPE_FIELDS (die->type), | |
3604 | TYPE_NFIELDS (die->type), | |
3605 | TYPE_VARARGS (die->type)); | |
c906108c SS |
3606 | |
3607 | /* Handle static member functions. | |
c5aa993b JM |
3608 | Dwarf2 has no clean way to discern C++ static and non-static |
3609 | member functions. G++ helps GDB by marking the first | |
3610 | parameter for non-static member functions (which is the | |
3611 | this pointer) as artificial. We obtain this information | |
3612 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
3613 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
3614 | fnp->voffset = VOFFSET_STATIC; | |
3615 | } | |
3616 | else | |
e2e0b3e5 | 3617 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 3618 | physname); |
c906108c SS |
3619 | |
3620 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 3621 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 3622 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
3623 | |
3624 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
3625 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
3626 | ||
3627 | /* Get accessibility. */ | |
e142c38c | 3628 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3629 | if (attr) |
3630 | { | |
3631 | switch (DW_UNSND (attr)) | |
3632 | { | |
c5aa993b JM |
3633 | case DW_ACCESS_private: |
3634 | fnp->is_private = 1; | |
3635 | break; | |
3636 | case DW_ACCESS_protected: | |
3637 | fnp->is_protected = 1; | |
3638 | break; | |
c906108c SS |
3639 | } |
3640 | } | |
3641 | ||
b02dede2 | 3642 | /* Check for artificial methods. */ |
e142c38c | 3643 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3644 | if (attr && DW_UNSND (attr) != 0) |
3645 | fnp->is_artificial = 1; | |
3646 | ||
c906108c | 3647 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3648 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3649 | if (attr) |
8e19ed76 PS |
3650 | { |
3651 | /* Support the .debug_loc offsets */ | |
3652 | if (attr_form_is_block (attr)) | |
3653 | { | |
e7c27a73 | 3654 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 PS |
3655 | } |
3656 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3657 | { | |
4d3c2250 | 3658 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3659 | } |
3660 | else | |
3661 | { | |
4d3c2250 KB |
3662 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3663 | fieldname); | |
8e19ed76 PS |
3664 | } |
3665 | } | |
c906108c SS |
3666 | } |
3667 | ||
3668 | /* Create the vector of member function fields, and attach it to the type. */ | |
3669 | ||
3670 | static void | |
fba45db2 | 3671 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3672 | struct dwarf2_cu *cu) |
c906108c SS |
3673 | { |
3674 | struct fnfieldlist *flp; | |
3675 | int total_length = 0; | |
3676 | int i; | |
3677 | ||
3678 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3679 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
3680 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
3681 | ||
3682 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
3683 | { | |
3684 | struct nextfnfield *nfp = flp->head; | |
3685 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
3686 | int k; | |
3687 | ||
3688 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
3689 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
3690 | fn_flp->fn_fields = (struct fn_field *) | |
3691 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
3692 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 3693 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
3694 | |
3695 | total_length += flp->length; | |
3696 | } | |
3697 | ||
3698 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
3699 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
3700 | } | |
3701 | ||
1168df01 JB |
3702 | |
3703 | /* Returns non-zero if NAME is the name of a vtable member in CU's | |
3704 | language, zero otherwise. */ | |
3705 | static int | |
3706 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
3707 | { | |
3708 | static const char vptr[] = "_vptr"; | |
987504bb | 3709 | static const char vtable[] = "vtable"; |
1168df01 | 3710 | |
987504bb JJ |
3711 | /* Look for the C++ and Java forms of the vtable. */ |
3712 | if ((cu->language == language_java | |
3713 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
3714 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
3715 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
3716 | return 1; |
3717 | ||
3718 | return 0; | |
3719 | } | |
3720 | ||
c0dd20ea DJ |
3721 | /* GCC outputs unnamed structures that are really pointers to member |
3722 | functions, with the ABI-specified layout. If DIE (from CU) describes | |
3723 | such a structure, set its type, and return nonzero. Otherwise return | |
61049d3b DJ |
3724 | zero. |
3725 | ||
3726 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
3727 | This is GCC PR debug/28767. */ | |
c0dd20ea DJ |
3728 | |
3729 | static int | |
3730 | quirk_gcc_member_function_pointer (struct die_info *die, struct dwarf2_cu *cu) | |
3731 | { | |
3732 | struct objfile *objfile = cu->objfile; | |
3733 | struct type *type; | |
3734 | struct die_info *pfn_die, *delta_die; | |
3735 | struct attribute *pfn_name, *delta_name; | |
3736 | struct type *pfn_type, *domain_type; | |
3737 | ||
3738 | /* Check for a structure with no name and two children. */ | |
3739 | if (die->tag != DW_TAG_structure_type | |
3740 | || dwarf2_attr (die, DW_AT_name, cu) != NULL | |
3741 | || die->child == NULL | |
3742 | || die->child->sibling == NULL | |
3743 | || (die->child->sibling->sibling != NULL | |
3744 | && die->child->sibling->sibling->tag != DW_TAG_padding)) | |
3745 | return 0; | |
3746 | ||
3747 | /* Check for __pfn and __delta members. */ | |
3748 | pfn_die = die->child; | |
3749 | pfn_name = dwarf2_attr (pfn_die, DW_AT_name, cu); | |
3750 | if (pfn_die->tag != DW_TAG_member | |
3751 | || pfn_name == NULL | |
3752 | || DW_STRING (pfn_name) == NULL | |
3753 | || strcmp ("__pfn", DW_STRING (pfn_name)) != 0) | |
3754 | return 0; | |
3755 | ||
3756 | delta_die = pfn_die->sibling; | |
3757 | delta_name = dwarf2_attr (delta_die, DW_AT_name, cu); | |
3758 | if (delta_die->tag != DW_TAG_member | |
3759 | || delta_name == NULL | |
3760 | || DW_STRING (delta_name) == NULL | |
3761 | || strcmp ("__delta", DW_STRING (delta_name)) != 0) | |
3762 | return 0; | |
3763 | ||
3764 | /* Find the type of the method. */ | |
3765 | pfn_type = die_type (pfn_die, cu); | |
3766 | if (pfn_type == NULL | |
3767 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
3768 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
3769 | return 0; | |
3770 | ||
3771 | /* Look for the "this" argument. */ | |
3772 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
3773 | if (TYPE_NFIELDS (pfn_type) == 0 | |
3774 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) | |
3775 | return 0; | |
3776 | ||
3777 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
3778 | type = alloc_type (objfile); | |
3779 | smash_to_method_type (type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
3780 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), | |
3781 | TYPE_VARARGS (pfn_type)); | |
3782 | type = lookup_pointer_type (type); | |
3783 | set_die_type (die, type, cu); | |
3784 | ||
3785 | return 1; | |
3786 | } | |
1168df01 | 3787 | |
c906108c SS |
3788 | /* Called when we find the DIE that starts a structure or union scope |
3789 | (definition) to process all dies that define the members of the | |
3790 | structure or union. | |
3791 | ||
3792 | NOTE: we need to call struct_type regardless of whether or not the | |
3793 | DIE has an at_name attribute, since it might be an anonymous | |
3794 | structure or union. This gets the type entered into our set of | |
3795 | user defined types. | |
3796 | ||
3797 | However, if the structure is incomplete (an opaque struct/union) | |
3798 | then suppress creating a symbol table entry for it since gdb only | |
3799 | wants to find the one with the complete definition. Note that if | |
3800 | it is complete, we just call new_symbol, which does it's own | |
3801 | checking about whether the struct/union is anonymous or not (and | |
3802 | suppresses creating a symbol table entry itself). */ | |
3803 | ||
3804 | static void | |
134d01f1 | 3805 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3806 | { |
e7c27a73 | 3807 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3808 | struct type *type; |
3809 | struct attribute *attr; | |
63d06c5c DC |
3810 | const char *previous_prefix = processing_current_prefix; |
3811 | struct cleanup *back_to = NULL; | |
c906108c | 3812 | |
134d01f1 DJ |
3813 | if (die->type) |
3814 | return; | |
3815 | ||
c0dd20ea DJ |
3816 | if (quirk_gcc_member_function_pointer (die, cu)) |
3817 | return; | |
c906108c | 3818 | |
c0dd20ea | 3819 | type = alloc_type (objfile); |
c906108c | 3820 | INIT_CPLUS_SPECIFIC (type); |
e142c38c | 3821 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3822 | if (attr && DW_STRING (attr)) |
3823 | { | |
987504bb JJ |
3824 | if (cu->language == language_cplus |
3825 | || cu->language == language_java) | |
63d06c5c | 3826 | { |
8176b9b8 DC |
3827 | char *new_prefix = determine_class_name (die, cu); |
3828 | TYPE_TAG_NAME (type) = obsavestring (new_prefix, | |
3829 | strlen (new_prefix), | |
3830 | &objfile->objfile_obstack); | |
3831 | back_to = make_cleanup (xfree, new_prefix); | |
63d06c5c DC |
3832 | processing_current_prefix = new_prefix; |
3833 | } | |
3834 | else | |
3835 | { | |
d8151005 DJ |
3836 | /* The name is already allocated along with this objfile, so |
3837 | we don't need to duplicate it for the type. */ | |
8176b9b8 | 3838 | TYPE_TAG_NAME (type) = DW_STRING (attr); |
63d06c5c | 3839 | } |
c906108c SS |
3840 | } |
3841 | ||
3842 | if (die->tag == DW_TAG_structure_type) | |
3843 | { | |
3844 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
3845 | } | |
3846 | else if (die->tag == DW_TAG_union_type) | |
3847 | { | |
3848 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
3849 | } | |
3850 | else | |
3851 | { | |
3852 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 3853 | in gdbtypes.h. */ |
c906108c SS |
3854 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
3855 | } | |
3856 | ||
e142c38c | 3857 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3858 | if (attr) |
3859 | { | |
3860 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3861 | } | |
3862 | else | |
3863 | { | |
3864 | TYPE_LENGTH (type) = 0; | |
3865 | } | |
3866 | ||
dc718098 JB |
3867 | if (die_is_declaration (die, cu)) |
3868 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
3869 | ||
c906108c SS |
3870 | /* We need to add the type field to the die immediately so we don't |
3871 | infinitely recurse when dealing with pointers to the structure | |
3872 | type within the structure itself. */ | |
1c379e20 | 3873 | set_die_type (die, type, cu); |
c906108c | 3874 | |
e142c38c | 3875 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
3876 | { |
3877 | struct field_info fi; | |
3878 | struct die_info *child_die; | |
3879 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
3880 | ||
3881 | memset (&fi, 0, sizeof (struct field_info)); | |
3882 | ||
639d11d3 | 3883 | child_die = die->child; |
c906108c SS |
3884 | |
3885 | while (child_die && child_die->tag) | |
3886 | { | |
a9a9bd0f DC |
3887 | if (child_die->tag == DW_TAG_member |
3888 | || child_die->tag == DW_TAG_variable) | |
c906108c | 3889 | { |
a9a9bd0f DC |
3890 | /* NOTE: carlton/2002-11-05: A C++ static data member |
3891 | should be a DW_TAG_member that is a declaration, but | |
3892 | all versions of G++ as of this writing (so through at | |
3893 | least 3.2.1) incorrectly generate DW_TAG_variable | |
3894 | tags for them instead. */ | |
e7c27a73 | 3895 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3896 | } |
8713b1b1 | 3897 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
3898 | { |
3899 | /* C++ member function. */ | |
134d01f1 | 3900 | read_type_die (child_die, cu); |
e7c27a73 | 3901 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
3902 | } |
3903 | else if (child_die->tag == DW_TAG_inheritance) | |
3904 | { | |
3905 | /* C++ base class field. */ | |
e7c27a73 | 3906 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3907 | } |
c906108c SS |
3908 | child_die = sibling_die (child_die); |
3909 | } | |
3910 | ||
3911 | /* Attach fields and member functions to the type. */ | |
3912 | if (fi.nfields) | |
e7c27a73 | 3913 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
3914 | if (fi.nfnfields) |
3915 | { | |
e7c27a73 | 3916 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 3917 | |
c5aa993b | 3918 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
3919 | class itself) which contains the vtable pointer for the current |
3920 | class from the DW_AT_containing_type attribute. */ | |
3921 | ||
e142c38c | 3922 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 3923 | { |
e7c27a73 | 3924 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
3925 | |
3926 | TYPE_VPTR_BASETYPE (type) = t; | |
3927 | if (type == t) | |
3928 | { | |
c906108c SS |
3929 | int i; |
3930 | ||
3931 | /* Our own class provides vtbl ptr. */ | |
3932 | for (i = TYPE_NFIELDS (t) - 1; | |
3933 | i >= TYPE_N_BASECLASSES (t); | |
3934 | --i) | |
3935 | { | |
3936 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
3937 | ||
1168df01 | 3938 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
3939 | { |
3940 | TYPE_VPTR_FIELDNO (type) = i; | |
3941 | break; | |
3942 | } | |
3943 | } | |
3944 | ||
3945 | /* Complain if virtual function table field not found. */ | |
3946 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 3947 | complaint (&symfile_complaints, |
e2e0b3e5 | 3948 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
3949 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
3950 | ""); | |
c906108c SS |
3951 | } |
3952 | else | |
3953 | { | |
3954 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3955 | } | |
3956 | } | |
f6235d4c EZ |
3957 | else if (cu->producer |
3958 | && strncmp (cu->producer, | |
3959 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
3960 | { | |
3961 | /* The IBM XLC compiler does not provide direct indication | |
3962 | of the containing type, but the vtable pointer is | |
3963 | always named __vfp. */ | |
3964 | ||
3965 | int i; | |
3966 | ||
3967 | for (i = TYPE_NFIELDS (type) - 1; | |
3968 | i >= TYPE_N_BASECLASSES (type); | |
3969 | --i) | |
3970 | { | |
3971 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
3972 | { | |
3973 | TYPE_VPTR_FIELDNO (type) = i; | |
3974 | TYPE_VPTR_BASETYPE (type) = type; | |
3975 | break; | |
3976 | } | |
3977 | } | |
3978 | } | |
c906108c SS |
3979 | } |
3980 | ||
c906108c SS |
3981 | do_cleanups (back_to); |
3982 | } | |
63d06c5c DC |
3983 | |
3984 | processing_current_prefix = previous_prefix; | |
3985 | if (back_to != NULL) | |
3986 | do_cleanups (back_to); | |
c906108c SS |
3987 | } |
3988 | ||
134d01f1 DJ |
3989 | static void |
3990 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
3991 | { | |
3992 | struct objfile *objfile = cu->objfile; | |
3993 | const char *previous_prefix = processing_current_prefix; | |
90aeadfc | 3994 | struct die_info *child_die = die->child; |
c906108c | 3995 | |
134d01f1 DJ |
3996 | if (TYPE_TAG_NAME (die->type) != NULL) |
3997 | processing_current_prefix = TYPE_TAG_NAME (die->type); | |
c906108c | 3998 | |
90aeadfc DC |
3999 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
4000 | snapshots) has been known to create a die giving a declaration | |
4001 | for a class that has, as a child, a die giving a definition for a | |
4002 | nested class. So we have to process our children even if the | |
4003 | current die is a declaration. Normally, of course, a declaration | |
4004 | won't have any children at all. */ | |
134d01f1 | 4005 | |
90aeadfc DC |
4006 | while (child_die != NULL && child_die->tag) |
4007 | { | |
4008 | if (child_die->tag == DW_TAG_member | |
4009 | || child_die->tag == DW_TAG_variable | |
4010 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 4011 | { |
90aeadfc | 4012 | /* Do nothing. */ |
134d01f1 | 4013 | } |
90aeadfc DC |
4014 | else |
4015 | process_die (child_die, cu); | |
134d01f1 | 4016 | |
90aeadfc | 4017 | child_die = sibling_die (child_die); |
134d01f1 DJ |
4018 | } |
4019 | ||
90aeadfc DC |
4020 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
4021 | new_symbol (die, die->type, cu); | |
4022 | ||
134d01f1 DJ |
4023 | processing_current_prefix = previous_prefix; |
4024 | } | |
4025 | ||
4026 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
4027 | complete the type's fields yet, or create any symbols. */ | |
c906108c SS |
4028 | |
4029 | static void | |
134d01f1 | 4030 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4031 | { |
e7c27a73 | 4032 | struct objfile *objfile = cu->objfile; |
c906108c | 4033 | struct type *type; |
c906108c | 4034 | struct attribute *attr; |
134d01f1 DJ |
4035 | |
4036 | if (die->type) | |
4037 | return; | |
c906108c SS |
4038 | |
4039 | type = alloc_type (objfile); | |
4040 | ||
4041 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
e142c38c | 4042 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
4043 | if (attr && DW_STRING (attr)) |
4044 | { | |
d8151005 | 4045 | char *name = DW_STRING (attr); |
63d06c5c DC |
4046 | |
4047 | if (processing_has_namespace_info) | |
4048 | { | |
987504bb JJ |
4049 | TYPE_TAG_NAME (type) = typename_concat (&objfile->objfile_obstack, |
4050 | processing_current_prefix, | |
4051 | name, cu); | |
63d06c5c DC |
4052 | } |
4053 | else | |
4054 | { | |
d8151005 DJ |
4055 | /* The name is already allocated along with this objfile, so |
4056 | we don't need to duplicate it for the type. */ | |
4057 | TYPE_TAG_NAME (type) = name; | |
63d06c5c | 4058 | } |
c906108c SS |
4059 | } |
4060 | ||
e142c38c | 4061 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4062 | if (attr) |
4063 | { | |
4064 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4065 | } | |
4066 | else | |
4067 | { | |
4068 | TYPE_LENGTH (type) = 0; | |
4069 | } | |
4070 | ||
1c379e20 | 4071 | set_die_type (die, type, cu); |
134d01f1 DJ |
4072 | } |
4073 | ||
8176b9b8 | 4074 | /* Determine the name of the type represented by DIE, which should be |
987504bb | 4075 | a named C++ or Java compound type. Return the name in question; the caller |
8176b9b8 DC |
4076 | is responsible for xfree()'ing it. */ |
4077 | ||
4078 | static char * | |
4079 | determine_class_name (struct die_info *die, struct dwarf2_cu *cu) | |
4080 | { | |
4081 | struct cleanup *back_to = NULL; | |
4082 | struct die_info *spec_die = die_specification (die, cu); | |
4083 | char *new_prefix = NULL; | |
4084 | ||
4085 | /* If this is the definition of a class that is declared by another | |
4086 | die, then processing_current_prefix may not be accurate; see | |
4087 | read_func_scope for a similar example. */ | |
4088 | if (spec_die != NULL) | |
4089 | { | |
4090 | char *specification_prefix = determine_prefix (spec_die, cu); | |
4091 | processing_current_prefix = specification_prefix; | |
4092 | back_to = make_cleanup (xfree, specification_prefix); | |
4093 | } | |
4094 | ||
4095 | /* If we don't have namespace debug info, guess the name by trying | |
4096 | to demangle the names of members, just like we did in | |
72bf9492 | 4097 | guess_structure_name. */ |
8176b9b8 DC |
4098 | if (!processing_has_namespace_info) |
4099 | { | |
4100 | struct die_info *child; | |
4101 | ||
4102 | for (child = die->child; | |
4103 | child != NULL && child->tag != 0; | |
4104 | child = sibling_die (child)) | |
4105 | { | |
4106 | if (child->tag == DW_TAG_subprogram) | |
4107 | { | |
31c27f77 JJ |
4108 | new_prefix |
4109 | = language_class_name_from_physname (cu->language_defn, | |
4110 | dwarf2_linkage_name | |
8176b9b8 DC |
4111 | (child, cu)); |
4112 | ||
4113 | if (new_prefix != NULL) | |
4114 | break; | |
4115 | } | |
4116 | } | |
4117 | } | |
4118 | ||
4119 | if (new_prefix == NULL) | |
4120 | { | |
4121 | const char *name = dwarf2_name (die, cu); | |
987504bb JJ |
4122 | new_prefix = typename_concat (NULL, processing_current_prefix, |
4123 | name ? name : "<<anonymous>>", | |
4124 | cu); | |
8176b9b8 DC |
4125 | } |
4126 | ||
4127 | if (back_to != NULL) | |
4128 | do_cleanups (back_to); | |
4129 | ||
4130 | return new_prefix; | |
4131 | } | |
4132 | ||
134d01f1 DJ |
4133 | /* Given a pointer to a die which begins an enumeration, process all |
4134 | the dies that define the members of the enumeration, and create the | |
4135 | symbol for the enumeration type. | |
4136 | ||
4137 | NOTE: We reverse the order of the element list. */ | |
4138 | ||
4139 | static void | |
4140 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4141 | { | |
4142 | struct objfile *objfile = cu->objfile; | |
4143 | struct die_info *child_die; | |
4144 | struct field *fields; | |
4145 | struct attribute *attr; | |
4146 | struct symbol *sym; | |
4147 | int num_fields; | |
4148 | int unsigned_enum = 1; | |
4149 | ||
c906108c SS |
4150 | num_fields = 0; |
4151 | fields = NULL; | |
639d11d3 | 4152 | if (die->child != NULL) |
c906108c | 4153 | { |
639d11d3 | 4154 | child_die = die->child; |
c906108c SS |
4155 | while (child_die && child_die->tag) |
4156 | { | |
4157 | if (child_die->tag != DW_TAG_enumerator) | |
4158 | { | |
e7c27a73 | 4159 | process_die (child_die, cu); |
c906108c SS |
4160 | } |
4161 | else | |
4162 | { | |
e142c38c | 4163 | attr = dwarf2_attr (child_die, DW_AT_name, cu); |
c906108c SS |
4164 | if (attr) |
4165 | { | |
134d01f1 | 4166 | sym = new_symbol (child_die, die->type, cu); |
c906108c SS |
4167 | if (SYMBOL_VALUE (sym) < 0) |
4168 | unsigned_enum = 0; | |
4169 | ||
4170 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4171 | { | |
4172 | fields = (struct field *) | |
4173 | xrealloc (fields, | |
4174 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4175 | * sizeof (struct field)); |
c906108c SS |
4176 | } |
4177 | ||
22abf04a | 4178 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
4179 | FIELD_TYPE (fields[num_fields]) = NULL; |
4180 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
4181 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 4182 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
4183 | |
4184 | num_fields++; | |
4185 | } | |
4186 | } | |
4187 | ||
4188 | child_die = sibling_die (child_die); | |
4189 | } | |
4190 | ||
4191 | if (num_fields) | |
4192 | { | |
134d01f1 DJ |
4193 | TYPE_NFIELDS (die->type) = num_fields; |
4194 | TYPE_FIELDS (die->type) = (struct field *) | |
4195 | TYPE_ALLOC (die->type, sizeof (struct field) * num_fields); | |
4196 | memcpy (TYPE_FIELDS (die->type), fields, | |
c906108c | 4197 | sizeof (struct field) * num_fields); |
b8c9b27d | 4198 | xfree (fields); |
c906108c SS |
4199 | } |
4200 | if (unsigned_enum) | |
134d01f1 | 4201 | TYPE_FLAGS (die->type) |= TYPE_FLAG_UNSIGNED; |
c906108c | 4202 | } |
134d01f1 DJ |
4203 | |
4204 | new_symbol (die, die->type, cu); | |
c906108c SS |
4205 | } |
4206 | ||
4207 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
4208 | the DIE's type field. For now, this only handles one dimensional | |
4209 | arrays. */ | |
4210 | ||
4211 | static void | |
e7c27a73 | 4212 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4213 | { |
e7c27a73 | 4214 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4215 | struct die_info *child_die; |
4216 | struct type *type = NULL; | |
4217 | struct type *element_type, *range_type, *index_type; | |
4218 | struct type **range_types = NULL; | |
4219 | struct attribute *attr; | |
4220 | int ndim = 0; | |
4221 | struct cleanup *back_to; | |
4222 | ||
4223 | /* Return if we've already decoded this type. */ | |
4224 | if (die->type) | |
4225 | { | |
4226 | return; | |
4227 | } | |
4228 | ||
e7c27a73 | 4229 | element_type = die_type (die, cu); |
c906108c SS |
4230 | |
4231 | /* Irix 6.2 native cc creates array types without children for | |
4232 | arrays with unspecified length. */ | |
639d11d3 | 4233 | if (die->child == NULL) |
c906108c | 4234 | { |
e142c38c | 4235 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 4236 | range_type = create_range_type (NULL, index_type, 0, -1); |
1c379e20 DJ |
4237 | set_die_type (die, create_array_type (NULL, element_type, range_type), |
4238 | cu); | |
c906108c SS |
4239 | return; |
4240 | } | |
4241 | ||
4242 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 4243 | child_die = die->child; |
c906108c SS |
4244 | while (child_die && child_die->tag) |
4245 | { | |
4246 | if (child_die->tag == DW_TAG_subrange_type) | |
4247 | { | |
a02abb62 | 4248 | read_subrange_type (child_die, cu); |
c906108c | 4249 | |
a02abb62 JB |
4250 | if (child_die->type != NULL) |
4251 | { | |
4252 | /* The range type was succesfully read. Save it for | |
4253 | the array type creation. */ | |
4254 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
4255 | { | |
4256 | range_types = (struct type **) | |
4257 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
4258 | * sizeof (struct type *)); | |
4259 | if (ndim == 0) | |
4260 | make_cleanup (free_current_contents, &range_types); | |
4261 | } | |
4262 | range_types[ndim++] = child_die->type; | |
4263 | } | |
c906108c SS |
4264 | } |
4265 | child_die = sibling_die (child_die); | |
4266 | } | |
4267 | ||
4268 | /* Dwarf2 dimensions are output from left to right, create the | |
4269 | necessary array types in backwards order. */ | |
7ca2d3a3 | 4270 | |
c906108c | 4271 | type = element_type; |
7ca2d3a3 DL |
4272 | |
4273 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
4274 | { | |
4275 | int i = 0; | |
4276 | while (i < ndim) | |
4277 | type = create_array_type (NULL, type, range_types[i++]); | |
4278 | } | |
4279 | else | |
4280 | { | |
4281 | while (ndim-- > 0) | |
4282 | type = create_array_type (NULL, type, range_types[ndim]); | |
4283 | } | |
c906108c | 4284 | |
f5f8a009 EZ |
4285 | /* Understand Dwarf2 support for vector types (like they occur on |
4286 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
4287 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
4288 | custom vendor extension. The main difference between a regular | |
4289 | array and the vector variant is that vectors are passed by value | |
4290 | to functions. */ | |
e142c38c | 4291 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 EZ |
4292 | if (attr) |
4293 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
4294 | ||
714e295e JB |
4295 | attr = dwarf2_attr (die, DW_AT_name, cu); |
4296 | if (attr && DW_STRING (attr)) | |
4297 | TYPE_NAME (type) = DW_STRING (attr); | |
4298 | ||
c906108c SS |
4299 | do_cleanups (back_to); |
4300 | ||
4301 | /* Install the type in the die. */ | |
1c379e20 | 4302 | set_die_type (die, type, cu); |
c906108c SS |
4303 | } |
4304 | ||
7ca2d3a3 DL |
4305 | static enum dwarf_array_dim_ordering |
4306 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
4307 | { | |
4308 | struct attribute *attr; | |
4309 | ||
4310 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
4311 | ||
4312 | if (attr) return DW_SND (attr); | |
4313 | ||
4314 | /* | |
4315 | GNU F77 is a special case, as at 08/2004 array type info is the | |
4316 | opposite order to the dwarf2 specification, but data is still | |
4317 | laid out as per normal fortran. | |
4318 | ||
4319 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
4320 | version checking. | |
4321 | */ | |
4322 | ||
4323 | if (cu->language == language_fortran && | |
4324 | cu->producer && strstr (cu->producer, "GNU F77")) | |
4325 | { | |
4326 | return DW_ORD_row_major; | |
4327 | } | |
4328 | ||
4329 | switch (cu->language_defn->la_array_ordering) | |
4330 | { | |
4331 | case array_column_major: | |
4332 | return DW_ORD_col_major; | |
4333 | case array_row_major: | |
4334 | default: | |
4335 | return DW_ORD_row_major; | |
4336 | }; | |
4337 | } | |
4338 | ||
72019c9c GM |
4339 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
4340 | the DIE's type field. */ | |
4341 | ||
4342 | static void | |
4343 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) | |
4344 | { | |
4345 | if (die->type == NULL) | |
4346 | die->type = create_set_type ((struct type *) NULL, die_type (die, cu)); | |
4347 | } | |
7ca2d3a3 | 4348 | |
c906108c SS |
4349 | /* First cut: install each common block member as a global variable. */ |
4350 | ||
4351 | static void | |
e7c27a73 | 4352 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4353 | { |
4354 | struct die_info *child_die; | |
4355 | struct attribute *attr; | |
4356 | struct symbol *sym; | |
4357 | CORE_ADDR base = (CORE_ADDR) 0; | |
4358 | ||
e142c38c | 4359 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
4360 | if (attr) |
4361 | { | |
8e19ed76 PS |
4362 | /* Support the .debug_loc offsets */ |
4363 | if (attr_form_is_block (attr)) | |
4364 | { | |
e7c27a73 | 4365 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 PS |
4366 | } |
4367 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
4368 | { | |
4d3c2250 | 4369 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4370 | } |
4371 | else | |
4372 | { | |
4d3c2250 KB |
4373 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4374 | "common block member"); | |
8e19ed76 | 4375 | } |
c906108c | 4376 | } |
639d11d3 | 4377 | if (die->child != NULL) |
c906108c | 4378 | { |
639d11d3 | 4379 | child_die = die->child; |
c906108c SS |
4380 | while (child_die && child_die->tag) |
4381 | { | |
e7c27a73 | 4382 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 4383 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
4384 | if (attr) |
4385 | { | |
4386 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 4387 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
4388 | add_symbol_to_list (sym, &global_symbols); |
4389 | } | |
4390 | child_die = sibling_die (child_die); | |
4391 | } | |
4392 | } | |
4393 | } | |
4394 | ||
d9fa45fe DC |
4395 | /* Read a C++ namespace. */ |
4396 | ||
d9fa45fe | 4397 | static void |
e7c27a73 | 4398 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 4399 | { |
e7c27a73 | 4400 | struct objfile *objfile = cu->objfile; |
38d518c9 | 4401 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 4402 | const char *name; |
9219021c DC |
4403 | int is_anonymous; |
4404 | struct die_info *current_die; | |
987504bb | 4405 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
9219021c | 4406 | |
e142c38c | 4407 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
4408 | |
4409 | /* Now build the name of the current namespace. */ | |
4410 | ||
38d518c9 | 4411 | if (previous_prefix[0] == '\0') |
9219021c | 4412 | { |
38d518c9 | 4413 | processing_current_prefix = name; |
9219021c DC |
4414 | } |
4415 | else | |
4416 | { | |
987504bb JJ |
4417 | char *temp_name = typename_concat (NULL, previous_prefix, name, cu); |
4418 | make_cleanup (xfree, temp_name); | |
38d518c9 | 4419 | processing_current_prefix = temp_name; |
9219021c DC |
4420 | } |
4421 | ||
5c4e30ca DC |
4422 | /* Add a symbol associated to this if we haven't seen the namespace |
4423 | before. Also, add a using directive if it's an anonymous | |
4424 | namespace. */ | |
9219021c | 4425 | |
e142c38c | 4426 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
4427 | { |
4428 | struct type *type; | |
4429 | ||
4430 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
4431 | this cast will hopefully become unnecessary. */ | |
4432 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 4433 | (char *) processing_current_prefix, |
5c4e30ca DC |
4434 | objfile); |
4435 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
4436 | ||
e7c27a73 | 4437 | new_symbol (die, type, cu); |
1c379e20 | 4438 | set_die_type (die, type, cu); |
5c4e30ca DC |
4439 | |
4440 | if (is_anonymous) | |
38d518c9 EZ |
4441 | cp_add_using_directive (processing_current_prefix, |
4442 | strlen (previous_prefix), | |
4443 | strlen (processing_current_prefix)); | |
5c4e30ca | 4444 | } |
9219021c | 4445 | |
639d11d3 | 4446 | if (die->child != NULL) |
d9fa45fe | 4447 | { |
639d11d3 | 4448 | struct die_info *child_die = die->child; |
d9fa45fe DC |
4449 | |
4450 | while (child_die && child_die->tag) | |
4451 | { | |
e7c27a73 | 4452 | process_die (child_die, cu); |
d9fa45fe DC |
4453 | child_die = sibling_die (child_die); |
4454 | } | |
4455 | } | |
9219021c | 4456 | |
38d518c9 | 4457 | processing_current_prefix = previous_prefix; |
987504bb | 4458 | do_cleanups (back_to); |
38d518c9 EZ |
4459 | } |
4460 | ||
4461 | /* Return the name of the namespace represented by DIE. Set | |
4462 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
4463 | namespace. */ | |
4464 | ||
4465 | static const char * | |
e142c38c | 4466 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
4467 | { |
4468 | struct die_info *current_die; | |
4469 | const char *name = NULL; | |
4470 | ||
4471 | /* Loop through the extensions until we find a name. */ | |
4472 | ||
4473 | for (current_die = die; | |
4474 | current_die != NULL; | |
e142c38c | 4475 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 4476 | { |
e142c38c | 4477 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
4478 | if (name != NULL) |
4479 | break; | |
4480 | } | |
4481 | ||
4482 | /* Is it an anonymous namespace? */ | |
4483 | ||
4484 | *is_anonymous = (name == NULL); | |
4485 | if (*is_anonymous) | |
4486 | name = "(anonymous namespace)"; | |
4487 | ||
4488 | return name; | |
d9fa45fe DC |
4489 | } |
4490 | ||
c906108c SS |
4491 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
4492 | the user defined type vector. */ | |
4493 | ||
4494 | static void | |
e7c27a73 | 4495 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4496 | { |
e7c27a73 | 4497 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 4498 | struct type *type; |
8b2dbe47 KB |
4499 | struct attribute *attr_byte_size; |
4500 | struct attribute *attr_address_class; | |
4501 | int byte_size, addr_class; | |
c906108c SS |
4502 | |
4503 | if (die->type) | |
4504 | { | |
4505 | return; | |
4506 | } | |
4507 | ||
e7c27a73 | 4508 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 4509 | |
e142c38c | 4510 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
4511 | if (attr_byte_size) |
4512 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 4513 | else |
8b2dbe47 KB |
4514 | byte_size = cu_header->addr_size; |
4515 | ||
e142c38c | 4516 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
4517 | if (attr_address_class) |
4518 | addr_class = DW_UNSND (attr_address_class); | |
4519 | else | |
4520 | addr_class = DW_ADDR_none; | |
4521 | ||
4522 | /* If the pointer size or address class is different than the | |
4523 | default, create a type variant marked as such and set the | |
4524 | length accordingly. */ | |
4525 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 4526 | { |
8b2dbe47 KB |
4527 | if (ADDRESS_CLASS_TYPE_FLAGS_P ()) |
4528 | { | |
4529 | int type_flags; | |
4530 | ||
4531 | type_flags = ADDRESS_CLASS_TYPE_FLAGS (byte_size, addr_class); | |
4532 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); | |
4533 | type = make_type_with_address_space (type, type_flags); | |
4534 | } | |
4535 | else if (TYPE_LENGTH (type) != byte_size) | |
4536 | { | |
e2e0b3e5 | 4537 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 KB |
4538 | } |
4539 | else { | |
4540 | /* Should we also complain about unhandled address classes? */ | |
4541 | } | |
c906108c | 4542 | } |
8b2dbe47 KB |
4543 | |
4544 | TYPE_LENGTH (type) = byte_size; | |
1c379e20 | 4545 | set_die_type (die, type, cu); |
c906108c SS |
4546 | } |
4547 | ||
4548 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
4549 | the user defined type vector. */ | |
4550 | ||
4551 | static void | |
e7c27a73 | 4552 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4553 | { |
e7c27a73 | 4554 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4555 | struct type *type; |
4556 | struct type *to_type; | |
4557 | struct type *domain; | |
4558 | ||
4559 | if (die->type) | |
4560 | { | |
4561 | return; | |
4562 | } | |
4563 | ||
4564 | type = alloc_type (objfile); | |
e7c27a73 DJ |
4565 | to_type = die_type (die, cu); |
4566 | domain = die_containing_type (die, cu); | |
c906108c SS |
4567 | smash_to_member_type (type, domain, to_type); |
4568 | ||
1c379e20 | 4569 | set_die_type (die, type, cu); |
c906108c SS |
4570 | } |
4571 | ||
4572 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
4573 | the user defined type vector. */ | |
4574 | ||
4575 | static void | |
e7c27a73 | 4576 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4577 | { |
e7c27a73 | 4578 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4579 | struct type *type; |
4580 | struct attribute *attr; | |
4581 | ||
4582 | if (die->type) | |
4583 | { | |
4584 | return; | |
4585 | } | |
4586 | ||
e7c27a73 | 4587 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 4588 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4589 | if (attr) |
4590 | { | |
4591 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4592 | } | |
4593 | else | |
4594 | { | |
107d2387 | 4595 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 4596 | } |
1c379e20 | 4597 | set_die_type (die, type, cu); |
c906108c SS |
4598 | } |
4599 | ||
4600 | static void | |
e7c27a73 | 4601 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4602 | { |
090c42a4 JB |
4603 | struct type *base_type; |
4604 | ||
c906108c SS |
4605 | if (die->type) |
4606 | { | |
4607 | return; | |
4608 | } | |
4609 | ||
e7c27a73 | 4610 | base_type = die_type (die, cu); |
1c379e20 DJ |
4611 | set_die_type (die, make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0), |
4612 | cu); | |
c906108c SS |
4613 | } |
4614 | ||
4615 | static void | |
e7c27a73 | 4616 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4617 | { |
090c42a4 JB |
4618 | struct type *base_type; |
4619 | ||
c906108c SS |
4620 | if (die->type) |
4621 | { | |
4622 | return; | |
4623 | } | |
4624 | ||
e7c27a73 | 4625 | base_type = die_type (die, cu); |
1c379e20 DJ |
4626 | set_die_type (die, make_cv_type (TYPE_CONST (base_type), 1, base_type, 0), |
4627 | cu); | |
c906108c SS |
4628 | } |
4629 | ||
4630 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
4631 | the user defined type vector. It isn't really a user defined type, | |
4632 | but it behaves like one, with other DIE's using an AT_user_def_type | |
4633 | attribute to reference it. */ | |
4634 | ||
4635 | static void | |
e7c27a73 | 4636 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4637 | { |
e7c27a73 | 4638 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4639 | struct type *type, *range_type, *index_type, *char_type; |
4640 | struct attribute *attr; | |
4641 | unsigned int length; | |
4642 | ||
4643 | if (die->type) | |
4644 | { | |
4645 | return; | |
4646 | } | |
4647 | ||
e142c38c | 4648 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
4649 | if (attr) |
4650 | { | |
4651 | length = DW_UNSND (attr); | |
4652 | } | |
4653 | else | |
4654 | { | |
b21b22e0 | 4655 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 4656 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
4657 | if (attr) |
4658 | { | |
4659 | length = DW_UNSND (attr); | |
4660 | } | |
4661 | else | |
4662 | { | |
4663 | length = 1; | |
4664 | } | |
c906108c | 4665 | } |
e142c38c | 4666 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 4667 | range_type = create_range_type (NULL, index_type, 1, length); |
e142c38c | 4668 | if (cu->language == language_fortran) |
b21b22e0 PS |
4669 | { |
4670 | /* Need to create a unique string type for bounds | |
4671 | information */ | |
4672 | type = create_string_type (0, range_type); | |
4673 | } | |
4674 | else | |
4675 | { | |
e142c38c | 4676 | char_type = dwarf2_fundamental_type (objfile, FT_CHAR, cu); |
b21b22e0 PS |
4677 | type = create_string_type (char_type, range_type); |
4678 | } | |
1c379e20 | 4679 | set_die_type (die, type, cu); |
c906108c SS |
4680 | } |
4681 | ||
4682 | /* Handle DIES due to C code like: | |
4683 | ||
4684 | struct foo | |
c5aa993b JM |
4685 | { |
4686 | int (*funcp)(int a, long l); | |
4687 | int b; | |
4688 | }; | |
c906108c SS |
4689 | |
4690 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 4691 | */ |
c906108c SS |
4692 | |
4693 | static void | |
e7c27a73 | 4694 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4695 | { |
4696 | struct type *type; /* Type that this function returns */ | |
4697 | struct type *ftype; /* Function that returns above type */ | |
4698 | struct attribute *attr; | |
4699 | ||
4700 | /* Decode the type that this subroutine returns */ | |
4701 | if (die->type) | |
4702 | { | |
4703 | return; | |
4704 | } | |
e7c27a73 | 4705 | type = die_type (die, cu); |
1326e61b | 4706 | ftype = make_function_type (type, (struct type **) 0); |
c906108c | 4707 | |
987504bb | 4708 | /* All functions in C++ and Java have prototypes. */ |
e142c38c | 4709 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 4710 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb JJ |
4711 | || cu->language == language_cplus |
4712 | || cu->language == language_java) | |
c906108c SS |
4713 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
4714 | ||
639d11d3 | 4715 | if (die->child != NULL) |
c906108c SS |
4716 | { |
4717 | struct die_info *child_die; | |
4718 | int nparams = 0; | |
4719 | int iparams = 0; | |
4720 | ||
4721 | /* Count the number of parameters. | |
4722 | FIXME: GDB currently ignores vararg functions, but knows about | |
4723 | vararg member functions. */ | |
639d11d3 | 4724 | child_die = die->child; |
c906108c SS |
4725 | while (child_die && child_die->tag) |
4726 | { | |
4727 | if (child_die->tag == DW_TAG_formal_parameter) | |
4728 | nparams++; | |
4729 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
4730 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
4731 | child_die = sibling_die (child_die); | |
4732 | } | |
4733 | ||
4734 | /* Allocate storage for parameters and fill them in. */ | |
4735 | TYPE_NFIELDS (ftype) = nparams; | |
4736 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 4737 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 4738 | |
639d11d3 | 4739 | child_die = die->child; |
c906108c SS |
4740 | while (child_die && child_die->tag) |
4741 | { | |
4742 | if (child_die->tag == DW_TAG_formal_parameter) | |
4743 | { | |
4744 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
4745 | member functions. G++ helps GDB by marking the first |
4746 | parameter for non-static member functions (which is the | |
4747 | this pointer) as artificial. We pass this information | |
4748 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 4749 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
4750 | if (attr) |
4751 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
4752 | else | |
4753 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 4754 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
4755 | iparams++; |
4756 | } | |
4757 | child_die = sibling_die (child_die); | |
4758 | } | |
4759 | } | |
4760 | ||
1c379e20 | 4761 | set_die_type (die, ftype, cu); |
c906108c SS |
4762 | } |
4763 | ||
4764 | static void | |
e7c27a73 | 4765 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4766 | { |
e7c27a73 | 4767 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
4768 | struct attribute *attr; |
4769 | char *name = NULL; | |
c906108c SS |
4770 | |
4771 | if (!die->type) | |
4772 | { | |
e142c38c | 4773 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c | 4774 | if (attr && DW_STRING (attr)) |
2f038fcb FF |
4775 | { |
4776 | name = DW_STRING (attr); | |
4777 | } | |
1c379e20 DJ |
4778 | set_die_type (die, init_type (TYPE_CODE_TYPEDEF, 0, |
4779 | TYPE_FLAG_TARGET_STUB, name, objfile), | |
4780 | cu); | |
e7c27a73 | 4781 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
4782 | } |
4783 | } | |
4784 | ||
4785 | /* Find a representation of a given base type and install | |
4786 | it in the TYPE field of the die. */ | |
4787 | ||
4788 | static void | |
e7c27a73 | 4789 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4790 | { |
e7c27a73 | 4791 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4792 | struct type *type; |
4793 | struct attribute *attr; | |
4794 | int encoding = 0, size = 0; | |
4795 | ||
4796 | /* If we've already decoded this die, this is a no-op. */ | |
4797 | if (die->type) | |
4798 | { | |
4799 | return; | |
4800 | } | |
4801 | ||
e142c38c | 4802 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
4803 | if (attr) |
4804 | { | |
4805 | encoding = DW_UNSND (attr); | |
4806 | } | |
e142c38c | 4807 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4808 | if (attr) |
4809 | { | |
4810 | size = DW_UNSND (attr); | |
4811 | } | |
e142c38c | 4812 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
4813 | if (attr && DW_STRING (attr)) |
4814 | { | |
4815 | enum type_code code = TYPE_CODE_INT; | |
f5ef7c67 | 4816 | int type_flags = 0; |
c906108c SS |
4817 | |
4818 | switch (encoding) | |
4819 | { | |
4820 | case DW_ATE_address: | |
4821 | /* Turn DW_ATE_address into a void * pointer. */ | |
4822 | code = TYPE_CODE_PTR; | |
f5ef7c67 | 4823 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4824 | break; |
4825 | case DW_ATE_boolean: | |
4826 | code = TYPE_CODE_BOOL; | |
f5ef7c67 | 4827 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4828 | break; |
4829 | case DW_ATE_complex_float: | |
4830 | code = TYPE_CODE_COMPLEX; | |
4831 | break; | |
4832 | case DW_ATE_float: | |
4833 | code = TYPE_CODE_FLT; | |
4834 | break; | |
4835 | case DW_ATE_signed: | |
c906108c SS |
4836 | break; |
4837 | case DW_ATE_unsigned: | |
72019c9c GM |
4838 | type_flags |= TYPE_FLAG_UNSIGNED; |
4839 | break; | |
4840 | case DW_ATE_signed_char: | |
4841 | if (cu->language == language_m2) | |
4842 | code = TYPE_CODE_CHAR; | |
4843 | break; | |
4844 | case DW_ATE_unsigned_char: | |
4845 | if (cu->language == language_m2) | |
4846 | code = TYPE_CODE_CHAR; | |
f5ef7c67 | 4847 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4848 | break; |
4849 | default: | |
e2e0b3e5 | 4850 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), |
4d3c2250 | 4851 | dwarf_type_encoding_name (encoding)); |
c906108c SS |
4852 | break; |
4853 | } | |
f5ef7c67 | 4854 | type = init_type (code, size, type_flags, DW_STRING (attr), objfile); |
c906108c | 4855 | if (encoding == DW_ATE_address) |
e142c38c DJ |
4856 | TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID, |
4857 | cu); | |
f65ca430 DJ |
4858 | else if (encoding == DW_ATE_complex_float) |
4859 | { | |
4860 | if (size == 32) | |
4861 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4862 | = dwarf2_fundamental_type (objfile, FT_EXT_PREC_FLOAT, cu); |
f65ca430 DJ |
4863 | else if (size == 16) |
4864 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4865 | = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
f65ca430 DJ |
4866 | else if (size == 8) |
4867 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4868 | = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
f65ca430 | 4869 | } |
c906108c SS |
4870 | } |
4871 | else | |
4872 | { | |
e7c27a73 | 4873 | type = dwarf_base_type (encoding, size, cu); |
c906108c | 4874 | } |
1c379e20 | 4875 | set_die_type (die, type, cu); |
c906108c SS |
4876 | } |
4877 | ||
a02abb62 JB |
4878 | /* Read the given DW_AT_subrange DIE. */ |
4879 | ||
4880 | static void | |
4881 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
4882 | { | |
4883 | struct type *base_type; | |
4884 | struct type *range_type; | |
4885 | struct attribute *attr; | |
4886 | int low = 0; | |
4887 | int high = -1; | |
4888 | ||
4889 | /* If we have already decoded this die, then nothing more to do. */ | |
4890 | if (die->type) | |
4891 | return; | |
4892 | ||
4893 | base_type = die_type (die, cu); | |
4894 | if (base_type == NULL) | |
4895 | { | |
4896 | complaint (&symfile_complaints, | |
e2e0b3e5 | 4897 | _("DW_AT_type missing from DW_TAG_subrange_type")); |
a02abb62 JB |
4898 | return; |
4899 | } | |
4900 | ||
4901 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
4902 | base_type = alloc_type (NULL); | |
4903 | ||
e142c38c | 4904 | if (cu->language == language_fortran) |
a02abb62 JB |
4905 | { |
4906 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
4907 | low = 1; | |
4908 | } | |
4909 | ||
dd5e6932 DJ |
4910 | /* FIXME: For variable sized arrays either of these could be |
4911 | a variable rather than a constant value. We'll allow it, | |
4912 | but we don't know how to handle it. */ | |
e142c38c | 4913 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
4914 | if (attr) |
4915 | low = dwarf2_get_attr_constant_value (attr, 0); | |
4916 | ||
e142c38c | 4917 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
4918 | if (attr) |
4919 | { | |
4920 | if (attr->form == DW_FORM_block1) | |
4921 | { | |
4922 | /* GCC encodes arrays with unspecified or dynamic length | |
4923 | with a DW_FORM_block1 attribute. | |
4924 | FIXME: GDB does not yet know how to handle dynamic | |
4925 | arrays properly, treat them as arrays with unspecified | |
4926 | length for now. | |
4927 | ||
4928 | FIXME: jimb/2003-09-22: GDB does not really know | |
4929 | how to handle arrays of unspecified length | |
4930 | either; we just represent them as zero-length | |
4931 | arrays. Choose an appropriate upper bound given | |
4932 | the lower bound we've computed above. */ | |
4933 | high = low - 1; | |
4934 | } | |
4935 | else | |
4936 | high = dwarf2_get_attr_constant_value (attr, 1); | |
4937 | } | |
4938 | ||
4939 | range_type = create_range_type (NULL, base_type, low, high); | |
4940 | ||
e142c38c | 4941 | attr = dwarf2_attr (die, DW_AT_name, cu); |
a02abb62 JB |
4942 | if (attr && DW_STRING (attr)) |
4943 | TYPE_NAME (range_type) = DW_STRING (attr); | |
4944 | ||
e142c38c | 4945 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
4946 | if (attr) |
4947 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
4948 | ||
1c379e20 | 4949 | set_die_type (die, range_type, cu); |
a02abb62 JB |
4950 | } |
4951 | ||
81a17f79 JB |
4952 | static void |
4953 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) | |
4954 | { | |
4955 | struct type *type; | |
4956 | struct attribute *attr; | |
4957 | ||
4958 | if (die->type) | |
4959 | return; | |
4960 | ||
4961 | /* For now, we only support the C meaning of an unspecified type: void. */ | |
4962 | ||
4963 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
4964 | type = init_type (TYPE_CODE_VOID, 0, 0, attr ? DW_STRING (attr) : "", | |
4965 | cu->objfile); | |
4966 | ||
4967 | set_die_type (die, type, cu); | |
4968 | } | |
a02abb62 | 4969 | |
c906108c SS |
4970 | /* Read a whole compilation unit into a linked list of dies. */ |
4971 | ||
f9aca02d | 4972 | static struct die_info * |
fe1b8b76 | 4973 | read_comp_unit (gdb_byte *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4974 | { |
e7c27a73 | 4975 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
4976 | } |
4977 | ||
4978 | /* Read a single die and all its descendents. Set the die's sibling | |
4979 | field to NULL; set other fields in the die correctly, and set all | |
4980 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
4981 | location of the info_ptr after reading all of those dies. PARENT | |
4982 | is the parent of the die in question. */ | |
4983 | ||
4984 | static struct die_info * | |
fe1b8b76 | 4985 | read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 4986 | struct dwarf2_cu *cu, |
fe1b8b76 | 4987 | gdb_byte **new_info_ptr, |
639d11d3 DC |
4988 | struct die_info *parent) |
4989 | { | |
4990 | struct die_info *die; | |
fe1b8b76 | 4991 | gdb_byte *cur_ptr; |
639d11d3 DC |
4992 | int has_children; |
4993 | ||
e7c27a73 | 4994 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
10b3939b | 4995 | store_in_ref_table (die->offset, die, cu); |
639d11d3 DC |
4996 | |
4997 | if (has_children) | |
4998 | { | |
e7c27a73 | 4999 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
5000 | new_info_ptr, die); |
5001 | } | |
5002 | else | |
5003 | { | |
5004 | die->child = NULL; | |
5005 | *new_info_ptr = cur_ptr; | |
5006 | } | |
5007 | ||
5008 | die->sibling = NULL; | |
5009 | die->parent = parent; | |
5010 | return die; | |
5011 | } | |
5012 | ||
5013 | /* Read a die, all of its descendents, and all of its siblings; set | |
5014 | all of the fields of all of the dies correctly. Arguments are as | |
5015 | in read_die_and_children. */ | |
5016 | ||
5017 | static struct die_info * | |
fe1b8b76 | 5018 | read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 5019 | struct dwarf2_cu *cu, |
fe1b8b76 | 5020 | gdb_byte **new_info_ptr, |
639d11d3 DC |
5021 | struct die_info *parent) |
5022 | { | |
5023 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 5024 | gdb_byte *cur_ptr; |
639d11d3 | 5025 | |
c906108c | 5026 | cur_ptr = info_ptr; |
639d11d3 DC |
5027 | first_die = last_sibling = NULL; |
5028 | ||
5029 | while (1) | |
c906108c | 5030 | { |
639d11d3 | 5031 | struct die_info *die |
e7c27a73 | 5032 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
5033 | |
5034 | if (!first_die) | |
c906108c | 5035 | { |
639d11d3 | 5036 | first_die = die; |
c906108c | 5037 | } |
639d11d3 | 5038 | else |
c906108c | 5039 | { |
639d11d3 | 5040 | last_sibling->sibling = die; |
c906108c SS |
5041 | } |
5042 | ||
639d11d3 | 5043 | if (die->tag == 0) |
c906108c | 5044 | { |
639d11d3 DC |
5045 | *new_info_ptr = cur_ptr; |
5046 | return first_die; | |
c906108c SS |
5047 | } |
5048 | else | |
5049 | { | |
639d11d3 | 5050 | last_sibling = die; |
c906108c SS |
5051 | } |
5052 | } | |
c906108c SS |
5053 | } |
5054 | ||
5055 | /* Free a linked list of dies. */ | |
5056 | ||
5057 | static void | |
fba45db2 | 5058 | free_die_list (struct die_info *dies) |
c906108c SS |
5059 | { |
5060 | struct die_info *die, *next; | |
5061 | ||
5062 | die = dies; | |
5063 | while (die) | |
5064 | { | |
639d11d3 DC |
5065 | if (die->child != NULL) |
5066 | free_die_list (die->child); | |
5067 | next = die->sibling; | |
b8c9b27d KB |
5068 | xfree (die->attrs); |
5069 | xfree (die); | |
c906108c SS |
5070 | die = next; |
5071 | } | |
5072 | } | |
5073 | ||
5074 | /* Read the contents of the section at OFFSET and of size SIZE from the | |
8b92e4d5 | 5075 | object file specified by OBJFILE into the objfile_obstack and return it. */ |
c906108c | 5076 | |
fe1b8b76 | 5077 | gdb_byte * |
188dd5d6 | 5078 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
5079 | { |
5080 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 5081 | gdb_byte *buf, *retbuf; |
2c500098 | 5082 | bfd_size_type size = bfd_get_section_size (sectp); |
c906108c SS |
5083 | |
5084 | if (size == 0) | |
5085 | return NULL; | |
5086 | ||
fe1b8b76 JB |
5087 | buf = obstack_alloc (&objfile->objfile_obstack, size); |
5088 | retbuf = symfile_relocate_debug_section (abfd, sectp, buf); | |
086df311 DJ |
5089 | if (retbuf != NULL) |
5090 | return retbuf; | |
5091 | ||
188dd5d6 DJ |
5092 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
5093 | || bfd_bread (buf, size, abfd) != size) | |
8a3fe4f8 | 5094 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
188dd5d6 DJ |
5095 | bfd_get_filename (abfd)); |
5096 | ||
c906108c SS |
5097 | return buf; |
5098 | } | |
5099 | ||
5100 | /* In DWARF version 2, the description of the debugging information is | |
5101 | stored in a separate .debug_abbrev section. Before we read any | |
5102 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
5103 | in a hash table. This function also sets flags in CU describing |
5104 | the data found in the abbrev table. */ | |
c906108c SS |
5105 | |
5106 | static void | |
e7c27a73 | 5107 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5108 | { |
e7c27a73 | 5109 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 5110 | gdb_byte *abbrev_ptr; |
c906108c SS |
5111 | struct abbrev_info *cur_abbrev; |
5112 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
5113 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
5114 | struct attr_abbrev *cur_attrs; |
5115 | unsigned int allocated_attrs; | |
c906108c | 5116 | |
57349743 | 5117 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
5118 | obstack_init (&cu->abbrev_obstack); |
5119 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
5120 | (ABBREV_HASH_SIZE | |
5121 | * sizeof (struct abbrev_info *))); | |
5122 | memset (cu->dwarf2_abbrevs, 0, | |
5123 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 5124 | |
6502dd73 | 5125 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
5126 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5127 | abbrev_ptr += bytes_read; | |
5128 | ||
f3dd6933 DJ |
5129 | allocated_attrs = ATTR_ALLOC_CHUNK; |
5130 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
5131 | ||
c906108c SS |
5132 | /* loop until we reach an abbrev number of 0 */ |
5133 | while (abbrev_number) | |
5134 | { | |
f3dd6933 | 5135 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
5136 | |
5137 | /* read in abbrev header */ | |
5138 | cur_abbrev->number = abbrev_number; | |
5139 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5140 | abbrev_ptr += bytes_read; | |
5141 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
5142 | abbrev_ptr += 1; | |
5143 | ||
72bf9492 DJ |
5144 | if (cur_abbrev->tag == DW_TAG_namespace) |
5145 | cu->has_namespace_info = 1; | |
5146 | ||
c906108c SS |
5147 | /* now read in declarations */ |
5148 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5149 | abbrev_ptr += bytes_read; | |
5150 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5151 | abbrev_ptr += bytes_read; | |
5152 | while (abbrev_name) | |
5153 | { | |
f3dd6933 | 5154 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 5155 | { |
f3dd6933 DJ |
5156 | allocated_attrs += ATTR_ALLOC_CHUNK; |
5157 | cur_attrs | |
5158 | = xrealloc (cur_attrs, (allocated_attrs | |
5159 | * sizeof (struct attr_abbrev))); | |
c906108c | 5160 | } |
ae038cb0 DJ |
5161 | |
5162 | /* Record whether this compilation unit might have | |
5163 | inter-compilation-unit references. If we don't know what form | |
5164 | this attribute will have, then it might potentially be a | |
5165 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
5166 | references. */ | |
5167 | ||
5168 | if (abbrev_form == DW_FORM_ref_addr | |
5169 | || abbrev_form == DW_FORM_indirect) | |
5170 | cu->has_form_ref_addr = 1; | |
5171 | ||
f3dd6933 DJ |
5172 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
5173 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
5174 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5175 | abbrev_ptr += bytes_read; | |
5176 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5177 | abbrev_ptr += bytes_read; | |
5178 | } | |
5179 | ||
f3dd6933 DJ |
5180 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
5181 | (cur_abbrev->num_attrs | |
5182 | * sizeof (struct attr_abbrev))); | |
5183 | memcpy (cur_abbrev->attrs, cur_attrs, | |
5184 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
5185 | ||
c906108c | 5186 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
5187 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
5188 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
5189 | |
5190 | /* Get next abbreviation. | |
5191 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
5192 | always properly terminated with an abbrev number of 0. |
5193 | Exit loop if we encounter an abbreviation which we have | |
5194 | already read (which means we are about to read the abbreviations | |
5195 | for the next compile unit) or if the end of the abbreviation | |
5196 | table is reached. */ | |
6502dd73 DJ |
5197 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev_buffer) |
5198 | >= dwarf2_per_objfile->abbrev_size) | |
c906108c SS |
5199 | break; |
5200 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5201 | abbrev_ptr += bytes_read; | |
e7c27a73 | 5202 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
5203 | break; |
5204 | } | |
f3dd6933 DJ |
5205 | |
5206 | xfree (cur_attrs); | |
c906108c SS |
5207 | } |
5208 | ||
f3dd6933 | 5209 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 5210 | |
c906108c | 5211 | static void |
f3dd6933 | 5212 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 5213 | { |
f3dd6933 | 5214 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 5215 | |
f3dd6933 DJ |
5216 | obstack_free (&cu->abbrev_obstack, NULL); |
5217 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
5218 | } |
5219 | ||
5220 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
5221 | ||
5222 | static struct abbrev_info * | |
e7c27a73 | 5223 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
5224 | { |
5225 | unsigned int hash_number; | |
5226 | struct abbrev_info *abbrev; | |
5227 | ||
5228 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 5229 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
5230 | |
5231 | while (abbrev) | |
5232 | { | |
5233 | if (abbrev->number == number) | |
5234 | return abbrev; | |
5235 | else | |
5236 | abbrev = abbrev->next; | |
5237 | } | |
5238 | return NULL; | |
5239 | } | |
5240 | ||
72bf9492 DJ |
5241 | /* Returns nonzero if TAG represents a type that we might generate a partial |
5242 | symbol for. */ | |
5243 | ||
5244 | static int | |
5245 | is_type_tag_for_partial (int tag) | |
5246 | { | |
5247 | switch (tag) | |
5248 | { | |
5249 | #if 0 | |
5250 | /* Some types that would be reasonable to generate partial symbols for, | |
5251 | that we don't at present. */ | |
5252 | case DW_TAG_array_type: | |
5253 | case DW_TAG_file_type: | |
5254 | case DW_TAG_ptr_to_member_type: | |
5255 | case DW_TAG_set_type: | |
5256 | case DW_TAG_string_type: | |
5257 | case DW_TAG_subroutine_type: | |
5258 | #endif | |
5259 | case DW_TAG_base_type: | |
5260 | case DW_TAG_class_type: | |
5261 | case DW_TAG_enumeration_type: | |
5262 | case DW_TAG_structure_type: | |
5263 | case DW_TAG_subrange_type: | |
5264 | case DW_TAG_typedef: | |
5265 | case DW_TAG_union_type: | |
5266 | return 1; | |
5267 | default: | |
5268 | return 0; | |
5269 | } | |
5270 | } | |
5271 | ||
5272 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
5273 | ||
5274 | static struct partial_die_info * | |
fe1b8b76 | 5275 | load_partial_dies (bfd *abfd, gdb_byte *info_ptr, int building_psymtab, |
72bf9492 DJ |
5276 | struct dwarf2_cu *cu) |
5277 | { | |
5278 | struct partial_die_info *part_die; | |
5279 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
5280 | struct abbrev_info *abbrev; | |
5281 | unsigned int bytes_read; | |
5afb4e99 | 5282 | unsigned int load_all = 0; |
72bf9492 DJ |
5283 | |
5284 | int nesting_level = 1; | |
5285 | ||
5286 | parent_die = NULL; | |
5287 | last_die = NULL; | |
5288 | ||
5afb4e99 DJ |
5289 | if (cu->per_cu && cu->per_cu->load_all_dies) |
5290 | load_all = 1; | |
5291 | ||
72bf9492 DJ |
5292 | cu->partial_dies |
5293 | = htab_create_alloc_ex (cu->header.length / 12, | |
5294 | partial_die_hash, | |
5295 | partial_die_eq, | |
5296 | NULL, | |
5297 | &cu->comp_unit_obstack, | |
5298 | hashtab_obstack_allocate, | |
5299 | dummy_obstack_deallocate); | |
5300 | ||
5301 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5302 | sizeof (struct partial_die_info)); | |
5303 | ||
5304 | while (1) | |
5305 | { | |
5306 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5307 | ||
5308 | /* A NULL abbrev means the end of a series of children. */ | |
5309 | if (abbrev == NULL) | |
5310 | { | |
5311 | if (--nesting_level == 0) | |
5312 | { | |
5313 | /* PART_DIE was probably the last thing allocated on the | |
5314 | comp_unit_obstack, so we could call obstack_free | |
5315 | here. We don't do that because the waste is small, | |
5316 | and will be cleaned up when we're done with this | |
5317 | compilation unit. This way, we're also more robust | |
5318 | against other users of the comp_unit_obstack. */ | |
5319 | return first_die; | |
5320 | } | |
5321 | info_ptr += bytes_read; | |
5322 | last_die = parent_die; | |
5323 | parent_die = parent_die->die_parent; | |
5324 | continue; | |
5325 | } | |
5326 | ||
5afb4e99 DJ |
5327 | /* Check whether this DIE is interesting enough to save. Normally |
5328 | we would not be interested in members here, but there may be | |
5329 | later variables referencing them via DW_AT_specification (for | |
5330 | static members). */ | |
5331 | if (!load_all | |
5332 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
5333 | && abbrev->tag != DW_TAG_enumerator |
5334 | && abbrev->tag != DW_TAG_subprogram | |
5335 | && abbrev->tag != DW_TAG_variable | |
5afb4e99 DJ |
5336 | && abbrev->tag != DW_TAG_namespace |
5337 | && abbrev->tag != DW_TAG_member) | |
72bf9492 DJ |
5338 | { |
5339 | /* Otherwise we skip to the next sibling, if any. */ | |
5340 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
5341 | continue; | |
5342 | } | |
5343 | ||
5344 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, | |
5345 | abfd, info_ptr, cu); | |
5346 | ||
5347 | /* This two-pass algorithm for processing partial symbols has a | |
5348 | high cost in cache pressure. Thus, handle some simple cases | |
5349 | here which cover the majority of C partial symbols. DIEs | |
5350 | which neither have specification tags in them, nor could have | |
5351 | specification tags elsewhere pointing at them, can simply be | |
5352 | processed and discarded. | |
5353 | ||
5354 | This segment is also optional; scan_partial_symbols and | |
5355 | add_partial_symbol will handle these DIEs if we chain | |
5356 | them in normally. When compilers which do not emit large | |
5357 | quantities of duplicate debug information are more common, | |
5358 | this code can probably be removed. */ | |
5359 | ||
5360 | /* Any complete simple types at the top level (pretty much all | |
5361 | of them, for a language without namespaces), can be processed | |
5362 | directly. */ | |
5363 | if (parent_die == NULL | |
5364 | && part_die->has_specification == 0 | |
5365 | && part_die->is_declaration == 0 | |
5366 | && (part_die->tag == DW_TAG_typedef | |
5367 | || part_die->tag == DW_TAG_base_type | |
5368 | || part_die->tag == DW_TAG_subrange_type)) | |
5369 | { | |
5370 | if (building_psymtab && part_die->name != NULL) | |
5371 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5372 | VAR_DOMAIN, LOC_TYPEDEF, | |
5373 | &cu->objfile->static_psymbols, | |
5374 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5375 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5376 | continue; | |
5377 | } | |
5378 | ||
5379 | /* If we're at the second level, and we're an enumerator, and | |
5380 | our parent has no specification (meaning possibly lives in a | |
5381 | namespace elsewhere), then we can add the partial symbol now | |
5382 | instead of queueing it. */ | |
5383 | if (part_die->tag == DW_TAG_enumerator | |
5384 | && parent_die != NULL | |
5385 | && parent_die->die_parent == NULL | |
5386 | && parent_die->tag == DW_TAG_enumeration_type | |
5387 | && parent_die->has_specification == 0) | |
5388 | { | |
5389 | if (part_die->name == NULL) | |
e2e0b3e5 | 5390 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 DJ |
5391 | else if (building_psymtab) |
5392 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5393 | VAR_DOMAIN, LOC_CONST, | |
987504bb JJ |
5394 | (cu->language == language_cplus |
5395 | || cu->language == language_java) | |
72bf9492 DJ |
5396 | ? &cu->objfile->global_psymbols |
5397 | : &cu->objfile->static_psymbols, | |
5398 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5399 | ||
5400 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5401 | continue; | |
5402 | } | |
5403 | ||
5404 | /* We'll save this DIE so link it in. */ | |
5405 | part_die->die_parent = parent_die; | |
5406 | part_die->die_sibling = NULL; | |
5407 | part_die->die_child = NULL; | |
5408 | ||
5409 | if (last_die && last_die == parent_die) | |
5410 | last_die->die_child = part_die; | |
5411 | else if (last_die) | |
5412 | last_die->die_sibling = part_die; | |
5413 | ||
5414 | last_die = part_die; | |
5415 | ||
5416 | if (first_die == NULL) | |
5417 | first_die = part_die; | |
5418 | ||
5419 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
5420 | find interesting need to be in the hash table, because we | |
5421 | also have the parent/sibling/child chains; only those that we | |
5422 | might refer to by offset later during partial symbol reading. | |
5423 | ||
5424 | For now this means things that might have be the target of a | |
5425 | DW_AT_specification, DW_AT_abstract_origin, or | |
5426 | DW_AT_extension. DW_AT_extension will refer only to | |
5427 | namespaces; DW_AT_abstract_origin refers to functions (and | |
5428 | many things under the function DIE, but we do not recurse | |
5429 | into function DIEs during partial symbol reading) and | |
5430 | possibly variables as well; DW_AT_specification refers to | |
5431 | declarations. Declarations ought to have the DW_AT_declaration | |
5432 | flag. It happens that GCC forgets to put it in sometimes, but | |
5433 | only for functions, not for types. | |
5434 | ||
5435 | Adding more things than necessary to the hash table is harmless | |
5436 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
5437 | wasted time in find_partial_die, when we reread the compilation |
5438 | unit with load_all_dies set. */ | |
72bf9492 | 5439 | |
5afb4e99 DJ |
5440 | if (load_all |
5441 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
5442 | || abbrev->tag == DW_TAG_variable |
5443 | || abbrev->tag == DW_TAG_namespace | |
5444 | || part_die->is_declaration) | |
5445 | { | |
5446 | void **slot; | |
5447 | ||
5448 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
5449 | part_die->offset, INSERT); | |
5450 | *slot = part_die; | |
5451 | } | |
5452 | ||
5453 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5454 | sizeof (struct partial_die_info)); | |
5455 | ||
5456 | /* For some DIEs we want to follow their children (if any). For C | |
5457 | we have no reason to follow the children of structures; for other | |
5458 | languages we have to, both so that we can get at method physnames | |
5459 | to infer fully qualified class names, and for DW_AT_specification. */ | |
5460 | if (last_die->has_children | |
5afb4e99 DJ |
5461 | && (load_all |
5462 | || last_die->tag == DW_TAG_namespace | |
72bf9492 DJ |
5463 | || last_die->tag == DW_TAG_enumeration_type |
5464 | || (cu->language != language_c | |
5465 | && (last_die->tag == DW_TAG_class_type | |
5466 | || last_die->tag == DW_TAG_structure_type | |
5467 | || last_die->tag == DW_TAG_union_type)))) | |
5468 | { | |
5469 | nesting_level++; | |
5470 | parent_die = last_die; | |
5471 | continue; | |
5472 | } | |
5473 | ||
5474 | /* Otherwise we skip to the next sibling, if any. */ | |
5475 | info_ptr = locate_pdi_sibling (last_die, info_ptr, abfd, cu); | |
5476 | ||
5477 | /* Back to the top, do it again. */ | |
5478 | } | |
5479 | } | |
5480 | ||
c906108c SS |
5481 | /* Read a minimal amount of information into the minimal die structure. */ |
5482 | ||
fe1b8b76 | 5483 | static gdb_byte * |
72bf9492 DJ |
5484 | read_partial_die (struct partial_die_info *part_die, |
5485 | struct abbrev_info *abbrev, | |
5486 | unsigned int abbrev_len, bfd *abfd, | |
fe1b8b76 | 5487 | gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 5488 | { |
72bf9492 | 5489 | unsigned int bytes_read, i; |
c906108c | 5490 | struct attribute attr; |
c5aa993b | 5491 | int has_low_pc_attr = 0; |
c906108c SS |
5492 | int has_high_pc_attr = 0; |
5493 | ||
72bf9492 | 5494 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 5495 | |
6502dd73 | 5496 | part_die->offset = info_ptr - dwarf2_per_objfile->info_buffer; |
72bf9492 DJ |
5497 | |
5498 | info_ptr += abbrev_len; | |
5499 | ||
5500 | if (abbrev == NULL) | |
5501 | return info_ptr; | |
5502 | ||
c906108c SS |
5503 | part_die->tag = abbrev->tag; |
5504 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
5505 | |
5506 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5507 | { | |
e7c27a73 | 5508 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
5509 | |
5510 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 5511 | partial symbol table. */ |
c906108c SS |
5512 | switch (attr.name) |
5513 | { | |
5514 | case DW_AT_name: | |
5515 | ||
5516 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
5517 | if (part_die->name == NULL) | |
5518 | part_die->name = DW_STRING (&attr); | |
5519 | break; | |
57c22c6c BR |
5520 | case DW_AT_comp_dir: |
5521 | if (part_die->dirname == NULL) | |
5522 | part_die->dirname = DW_STRING (&attr); | |
5523 | break; | |
c906108c SS |
5524 | case DW_AT_MIPS_linkage_name: |
5525 | part_die->name = DW_STRING (&attr); | |
5526 | break; | |
5527 | case DW_AT_low_pc: | |
5528 | has_low_pc_attr = 1; | |
5529 | part_die->lowpc = DW_ADDR (&attr); | |
5530 | break; | |
5531 | case DW_AT_high_pc: | |
5532 | has_high_pc_attr = 1; | |
5533 | part_die->highpc = DW_ADDR (&attr); | |
5534 | break; | |
5535 | case DW_AT_location: | |
8e19ed76 PS |
5536 | /* Support the .debug_loc offsets */ |
5537 | if (attr_form_is_block (&attr)) | |
5538 | { | |
5539 | part_die->locdesc = DW_BLOCK (&attr); | |
5540 | } | |
5541 | else if (attr.form == DW_FORM_data4 || attr.form == DW_FORM_data8) | |
5542 | { | |
4d3c2250 | 5543 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5544 | } |
5545 | else | |
5546 | { | |
4d3c2250 KB |
5547 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
5548 | "partial symbol information"); | |
8e19ed76 | 5549 | } |
c906108c SS |
5550 | break; |
5551 | case DW_AT_language: | |
5552 | part_die->language = DW_UNSND (&attr); | |
5553 | break; | |
5554 | case DW_AT_external: | |
5555 | part_die->is_external = DW_UNSND (&attr); | |
5556 | break; | |
5557 | case DW_AT_declaration: | |
5558 | part_die->is_declaration = DW_UNSND (&attr); | |
5559 | break; | |
5560 | case DW_AT_type: | |
5561 | part_die->has_type = 1; | |
5562 | break; | |
5563 | case DW_AT_abstract_origin: | |
5564 | case DW_AT_specification: | |
72bf9492 DJ |
5565 | case DW_AT_extension: |
5566 | part_die->has_specification = 1; | |
5567 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c SS |
5568 | break; |
5569 | case DW_AT_sibling: | |
5570 | /* Ignore absolute siblings, they might point outside of | |
5571 | the current compile unit. */ | |
5572 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 5573 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 5574 | else |
6502dd73 DJ |
5575 | part_die->sibling = dwarf2_per_objfile->info_buffer |
5576 | + dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c | 5577 | break; |
aaa75496 JB |
5578 | case DW_AT_stmt_list: |
5579 | part_die->has_stmt_list = 1; | |
5580 | part_die->line_offset = DW_UNSND (&attr); | |
5581 | break; | |
c906108c SS |
5582 | default: |
5583 | break; | |
5584 | } | |
5585 | } | |
5586 | ||
c906108c SS |
5587 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
5588 | eliminate duplicate copies of functions and vtables and such. | |
5589 | The linker will arbitrarily choose one and discard the others. | |
5590 | The AT_*_pc values for such functions refer to local labels in | |
5591 | these sections. If the section from that file was discarded, the | |
5592 | labels are not in the output, so the relocs get a value of 0. | |
5593 | If this is a discarded function, mark the pc bounds as invalid, | |
5594 | so that GDB will ignore it. */ | |
5595 | if (has_low_pc_attr && has_high_pc_attr | |
5596 | && part_die->lowpc < part_die->highpc | |
5597 | && (part_die->lowpc != 0 | |
72dca2f5 | 5598 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 5599 | part_die->has_pc_info = 1; |
c906108c SS |
5600 | return info_ptr; |
5601 | } | |
5602 | ||
72bf9492 DJ |
5603 | /* Find a cached partial DIE at OFFSET in CU. */ |
5604 | ||
5605 | static struct partial_die_info * | |
5606 | find_partial_die_in_comp_unit (unsigned long offset, struct dwarf2_cu *cu) | |
5607 | { | |
5608 | struct partial_die_info *lookup_die = NULL; | |
5609 | struct partial_die_info part_die; | |
5610 | ||
5611 | part_die.offset = offset; | |
5612 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
5613 | ||
72bf9492 DJ |
5614 | return lookup_die; |
5615 | } | |
5616 | ||
5617 | /* Find a partial DIE at OFFSET, which may or may not be in CU. */ | |
5618 | ||
5619 | static struct partial_die_info * | |
10b3939b | 5620 | find_partial_die (unsigned long offset, struct dwarf2_cu *cu) |
72bf9492 | 5621 | { |
5afb4e99 DJ |
5622 | struct dwarf2_per_cu_data *per_cu = NULL; |
5623 | struct partial_die_info *pd = NULL; | |
72bf9492 DJ |
5624 | |
5625 | if (offset >= cu->header.offset | |
5626 | && offset < cu->header.offset + cu->header.length) | |
5afb4e99 DJ |
5627 | { |
5628 | pd = find_partial_die_in_comp_unit (offset, cu); | |
5629 | if (pd != NULL) | |
5630 | return pd; | |
5631 | } | |
72bf9492 | 5632 | |
ae038cb0 DJ |
5633 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
5634 | ||
ae038cb0 DJ |
5635 | if (per_cu->cu == NULL) |
5636 | { | |
5637 | load_comp_unit (per_cu, cu->objfile); | |
5638 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5639 | dwarf2_per_objfile->read_in_chain = per_cu; | |
5640 | } | |
5641 | ||
5642 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
5643 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
5644 | ||
5645 | if (pd == NULL && per_cu->load_all_dies == 0) | |
5646 | { | |
5647 | struct cleanup *back_to; | |
5648 | struct partial_die_info comp_unit_die; | |
5649 | struct abbrev_info *abbrev; | |
5650 | unsigned int bytes_read; | |
5651 | char *info_ptr; | |
5652 | ||
5653 | per_cu->load_all_dies = 1; | |
5654 | ||
5655 | /* Re-read the DIEs. */ | |
5656 | back_to = make_cleanup (null_cleanup, 0); | |
5657 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
5658 | { | |
5659 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
5660 | back_to = make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); | |
5661 | } | |
5662 | info_ptr = per_cu->cu->header.first_die_ptr; | |
5663 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); | |
5664 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
5665 | per_cu->cu->objfile->obfd, info_ptr, | |
5666 | per_cu->cu); | |
5667 | if (comp_unit_die.has_children) | |
5668 | load_partial_dies (per_cu->cu->objfile->obfd, info_ptr, 0, per_cu->cu); | |
5669 | do_cleanups (back_to); | |
5670 | ||
5671 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
5672 | } | |
5673 | ||
5674 | if (pd == NULL) | |
5675 | internal_error (__FILE__, __LINE__, | |
5676 | _("could not find partial DIE 0x%lx in cache [from module %s]\n"), | |
5677 | offset, bfd_get_filename (cu->objfile->obfd)); | |
5678 | return pd; | |
72bf9492 DJ |
5679 | } |
5680 | ||
5681 | /* Adjust PART_DIE before generating a symbol for it. This function | |
5682 | may set the is_external flag or change the DIE's name. */ | |
5683 | ||
5684 | static void | |
5685 | fixup_partial_die (struct partial_die_info *part_die, | |
5686 | struct dwarf2_cu *cu) | |
5687 | { | |
5688 | /* If we found a reference attribute and the DIE has no name, try | |
5689 | to find a name in the referred to DIE. */ | |
5690 | ||
5691 | if (part_die->name == NULL && part_die->has_specification) | |
5692 | { | |
5693 | struct partial_die_info *spec_die; | |
72bf9492 | 5694 | |
10b3939b | 5695 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 5696 | |
10b3939b | 5697 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
5698 | |
5699 | if (spec_die->name) | |
5700 | { | |
5701 | part_die->name = spec_die->name; | |
5702 | ||
5703 | /* Copy DW_AT_external attribute if it is set. */ | |
5704 | if (spec_die->is_external) | |
5705 | part_die->is_external = spec_die->is_external; | |
5706 | } | |
5707 | } | |
5708 | ||
5709 | /* Set default names for some unnamed DIEs. */ | |
5710 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
5711 | || part_die->tag == DW_TAG_class_type)) | |
5712 | part_die->name = "(anonymous class)"; | |
5713 | ||
5714 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
5715 | part_die->name = "(anonymous namespace)"; | |
5716 | ||
5717 | if (part_die->tag == DW_TAG_structure_type | |
5718 | || part_die->tag == DW_TAG_class_type | |
5719 | || part_die->tag == DW_TAG_union_type) | |
5720 | guess_structure_name (part_die, cu); | |
5721 | } | |
5722 | ||
639d11d3 DC |
5723 | /* Read the die from the .debug_info section buffer. Set DIEP to |
5724 | point to a newly allocated die with its information, except for its | |
5725 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
5726 | whether the die has children or not. */ | |
c906108c | 5727 | |
fe1b8b76 JB |
5728 | static gdb_byte * |
5729 | read_full_die (struct die_info **diep, bfd *abfd, gdb_byte *info_ptr, | |
e7c27a73 | 5730 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
5731 | { |
5732 | unsigned int abbrev_number, bytes_read, i, offset; | |
5733 | struct abbrev_info *abbrev; | |
5734 | struct die_info *die; | |
5735 | ||
6502dd73 | 5736 | offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
5737 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5738 | info_ptr += bytes_read; | |
5739 | if (!abbrev_number) | |
5740 | { | |
5741 | die = dwarf_alloc_die (); | |
5742 | die->tag = 0; | |
5743 | die->abbrev = abbrev_number; | |
5744 | die->type = NULL; | |
5745 | *diep = die; | |
639d11d3 | 5746 | *has_children = 0; |
c906108c SS |
5747 | return info_ptr; |
5748 | } | |
5749 | ||
e7c27a73 | 5750 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
5751 | if (!abbrev) |
5752 | { | |
8a3fe4f8 | 5753 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
72bf9492 | 5754 | abbrev_number, |
639d11d3 | 5755 | bfd_get_filename (abfd)); |
c906108c SS |
5756 | } |
5757 | die = dwarf_alloc_die (); | |
5758 | die->offset = offset; | |
5759 | die->tag = abbrev->tag; | |
c906108c SS |
5760 | die->abbrev = abbrev_number; |
5761 | die->type = NULL; | |
5762 | ||
5763 | die->num_attrs = abbrev->num_attrs; | |
5764 | die->attrs = (struct attribute *) | |
5765 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
5766 | ||
5767 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5768 | { | |
5769 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 5770 | abfd, info_ptr, cu); |
10b3939b DJ |
5771 | |
5772 | /* If this attribute is an absolute reference to a different | |
5773 | compilation unit, make sure that compilation unit is loaded | |
5774 | also. */ | |
5775 | if (die->attrs[i].form == DW_FORM_ref_addr | |
5776 | && (DW_ADDR (&die->attrs[i]) < cu->header.offset | |
5777 | || (DW_ADDR (&die->attrs[i]) | |
5778 | >= cu->header.offset + cu->header.length))) | |
5779 | { | |
5780 | struct dwarf2_per_cu_data *per_cu; | |
5781 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (&die->attrs[i]), | |
5782 | cu->objfile); | |
5783 | ||
5784 | /* Mark the dependence relation so that we don't flush PER_CU | |
5785 | too early. */ | |
5786 | dwarf2_add_dependence (cu, per_cu); | |
5787 | ||
5788 | /* If it's already on the queue, we have nothing to do. */ | |
5789 | if (per_cu->queued) | |
5790 | continue; | |
5791 | ||
5792 | /* If the compilation unit is already loaded, just mark it as | |
5793 | used. */ | |
5794 | if (per_cu->cu != NULL) | |
5795 | { | |
5796 | per_cu->cu->last_used = 0; | |
5797 | continue; | |
5798 | } | |
5799 | ||
5800 | /* Add it to the queue. */ | |
5801 | queue_comp_unit (per_cu); | |
5802 | } | |
c906108c SS |
5803 | } |
5804 | ||
5805 | *diep = die; | |
639d11d3 | 5806 | *has_children = abbrev->has_children; |
c906108c SS |
5807 | return info_ptr; |
5808 | } | |
5809 | ||
a8329558 | 5810 | /* Read an attribute value described by an attribute form. */ |
c906108c | 5811 | |
fe1b8b76 | 5812 | static gdb_byte * |
a8329558 | 5813 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 5814 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 5815 | struct dwarf2_cu *cu) |
c906108c | 5816 | { |
e7c27a73 | 5817 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5818 | unsigned int bytes_read; |
5819 | struct dwarf_block *blk; | |
5820 | ||
a8329558 KW |
5821 | attr->form = form; |
5822 | switch (form) | |
c906108c SS |
5823 | { |
5824 | case DW_FORM_addr: | |
5825 | case DW_FORM_ref_addr: | |
e7c27a73 | 5826 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 5827 | info_ptr += bytes_read; |
c906108c SS |
5828 | break; |
5829 | case DW_FORM_block2: | |
7b5a2f43 | 5830 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5831 | blk->size = read_2_bytes (abfd, info_ptr); |
5832 | info_ptr += 2; | |
5833 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5834 | info_ptr += blk->size; | |
5835 | DW_BLOCK (attr) = blk; | |
5836 | break; | |
5837 | case DW_FORM_block4: | |
7b5a2f43 | 5838 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5839 | blk->size = read_4_bytes (abfd, info_ptr); |
5840 | info_ptr += 4; | |
5841 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5842 | info_ptr += blk->size; | |
5843 | DW_BLOCK (attr) = blk; | |
5844 | break; | |
5845 | case DW_FORM_data2: | |
5846 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
5847 | info_ptr += 2; | |
5848 | break; | |
5849 | case DW_FORM_data4: | |
5850 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
5851 | info_ptr += 4; | |
5852 | break; | |
5853 | case DW_FORM_data8: | |
5854 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
5855 | info_ptr += 8; | |
5856 | break; | |
5857 | case DW_FORM_string: | |
5858 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
5859 | info_ptr += bytes_read; | |
5860 | break; | |
4bdf3d34 JJ |
5861 | case DW_FORM_strp: |
5862 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
5863 | &bytes_read); | |
5864 | info_ptr += bytes_read; | |
5865 | break; | |
c906108c | 5866 | case DW_FORM_block: |
7b5a2f43 | 5867 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5868 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5869 | info_ptr += bytes_read; | |
5870 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5871 | info_ptr += blk->size; | |
5872 | DW_BLOCK (attr) = blk; | |
5873 | break; | |
5874 | case DW_FORM_block1: | |
7b5a2f43 | 5875 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5876 | blk->size = read_1_byte (abfd, info_ptr); |
5877 | info_ptr += 1; | |
5878 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5879 | info_ptr += blk->size; | |
5880 | DW_BLOCK (attr) = blk; | |
5881 | break; | |
5882 | case DW_FORM_data1: | |
5883 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
5884 | info_ptr += 1; | |
5885 | break; | |
5886 | case DW_FORM_flag: | |
5887 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
5888 | info_ptr += 1; | |
5889 | break; | |
5890 | case DW_FORM_sdata: | |
5891 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
5892 | info_ptr += bytes_read; | |
5893 | break; | |
5894 | case DW_FORM_udata: | |
5895 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5896 | info_ptr += bytes_read; | |
5897 | break; | |
5898 | case DW_FORM_ref1: | |
10b3939b | 5899 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
5900 | info_ptr += 1; |
5901 | break; | |
5902 | case DW_FORM_ref2: | |
10b3939b | 5903 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
5904 | info_ptr += 2; |
5905 | break; | |
5906 | case DW_FORM_ref4: | |
10b3939b | 5907 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
5908 | info_ptr += 4; |
5909 | break; | |
613e1657 | 5910 | case DW_FORM_ref8: |
10b3939b | 5911 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
5912 | info_ptr += 8; |
5913 | break; | |
c906108c | 5914 | case DW_FORM_ref_udata: |
10b3939b DJ |
5915 | DW_ADDR (attr) = (cu->header.offset |
5916 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
5917 | info_ptr += bytes_read; |
5918 | break; | |
c906108c | 5919 | case DW_FORM_indirect: |
a8329558 KW |
5920 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5921 | info_ptr += bytes_read; | |
e7c27a73 | 5922 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 5923 | break; |
c906108c | 5924 | default: |
8a3fe4f8 | 5925 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
5926 | dwarf_form_name (form), |
5927 | bfd_get_filename (abfd)); | |
c906108c SS |
5928 | } |
5929 | return info_ptr; | |
5930 | } | |
5931 | ||
a8329558 KW |
5932 | /* Read an attribute described by an abbreviated attribute. */ |
5933 | ||
fe1b8b76 | 5934 | static gdb_byte * |
a8329558 | 5935 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 5936 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
5937 | { |
5938 | attr->name = abbrev->name; | |
e7c27a73 | 5939 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
5940 | } |
5941 | ||
c906108c SS |
5942 | /* read dwarf information from a buffer */ |
5943 | ||
5944 | static unsigned int | |
fe1b8b76 | 5945 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 5946 | { |
fe1b8b76 | 5947 | return bfd_get_8 (abfd, buf); |
c906108c SS |
5948 | } |
5949 | ||
5950 | static int | |
fe1b8b76 | 5951 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 5952 | { |
fe1b8b76 | 5953 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
5954 | } |
5955 | ||
5956 | static unsigned int | |
fe1b8b76 | 5957 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5958 | { |
fe1b8b76 | 5959 | return bfd_get_16 (abfd, buf); |
c906108c SS |
5960 | } |
5961 | ||
5962 | static int | |
fe1b8b76 | 5963 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5964 | { |
fe1b8b76 | 5965 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
5966 | } |
5967 | ||
5968 | static unsigned int | |
fe1b8b76 | 5969 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5970 | { |
fe1b8b76 | 5971 | return bfd_get_32 (abfd, buf); |
c906108c SS |
5972 | } |
5973 | ||
5974 | static int | |
fe1b8b76 | 5975 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5976 | { |
fe1b8b76 | 5977 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
5978 | } |
5979 | ||
ce5d95e1 | 5980 | static unsigned long |
fe1b8b76 | 5981 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5982 | { |
fe1b8b76 | 5983 | return bfd_get_64 (abfd, buf); |
c906108c SS |
5984 | } |
5985 | ||
5986 | static CORE_ADDR | |
fe1b8b76 | 5987 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 5988 | unsigned int *bytes_read) |
c906108c | 5989 | { |
e7c27a73 | 5990 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5991 | CORE_ADDR retval = 0; |
5992 | ||
107d2387 | 5993 | if (cu_header->signed_addr_p) |
c906108c | 5994 | { |
107d2387 AC |
5995 | switch (cu_header->addr_size) |
5996 | { | |
5997 | case 2: | |
fe1b8b76 | 5998 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
5999 | break; |
6000 | case 4: | |
fe1b8b76 | 6001 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
6002 | break; |
6003 | case 8: | |
fe1b8b76 | 6004 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
6005 | break; |
6006 | default: | |
8e65ff28 | 6007 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6008 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 6009 | bfd_get_filename (abfd)); |
107d2387 AC |
6010 | } |
6011 | } | |
6012 | else | |
6013 | { | |
6014 | switch (cu_header->addr_size) | |
6015 | { | |
6016 | case 2: | |
fe1b8b76 | 6017 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
6018 | break; |
6019 | case 4: | |
fe1b8b76 | 6020 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
6021 | break; |
6022 | case 8: | |
fe1b8b76 | 6023 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
6024 | break; |
6025 | default: | |
8e65ff28 | 6026 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6027 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 6028 | bfd_get_filename (abfd)); |
107d2387 | 6029 | } |
c906108c | 6030 | } |
64367e0a | 6031 | |
107d2387 AC |
6032 | *bytes_read = cu_header->addr_size; |
6033 | return retval; | |
c906108c SS |
6034 | } |
6035 | ||
f7ef9339 | 6036 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
6037 | specification allows the initial length to take up either 4 bytes |
6038 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
6039 | bytes describe the length and all offsets will be 8 bytes in length | |
6040 | instead of 4. | |
6041 | ||
f7ef9339 KB |
6042 | An older, non-standard 64-bit format is also handled by this |
6043 | function. The older format in question stores the initial length | |
6044 | as an 8-byte quantity without an escape value. Lengths greater | |
6045 | than 2^32 aren't very common which means that the initial 4 bytes | |
6046 | is almost always zero. Since a length value of zero doesn't make | |
6047 | sense for the 32-bit format, this initial zero can be considered to | |
6048 | be an escape value which indicates the presence of the older 64-bit | |
6049 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
6050 | greater than 4GB. If it becomes necessary to handle lengths |
6051 | somewhat larger than 4GB, we could allow other small values (such | |
6052 | as the non-sensical values of 1, 2, and 3) to also be used as | |
6053 | escape values indicating the presence of the old format. | |
f7ef9339 | 6054 | |
917c78fc MK |
6055 | The value returned via bytes_read should be used to increment the |
6056 | relevant pointer after calling read_initial_length(). | |
613e1657 KB |
6057 | |
6058 | As a side effect, this function sets the fields initial_length_size | |
6059 | and offset_size in cu_header to the values appropriate for the | |
6060 | length field. (The format of the initial length field determines | |
dd373385 | 6061 | the width of file offsets to be fetched later with read_offset().) |
613e1657 KB |
6062 | |
6063 | [ Note: read_initial_length() and read_offset() are based on the | |
6064 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 6065 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
6066 | from: |
6067 | ||
f7ef9339 | 6068 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
6069 | |
6070 | This document is only a draft and is subject to change. (So beware.) | |
6071 | ||
f7ef9339 | 6072 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
6073 | determined empirically by examining 64-bit ELF files produced by |
6074 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
6075 | |
6076 | - Kevin, July 16, 2002 | |
613e1657 KB |
6077 | ] */ |
6078 | ||
6079 | static LONGEST | |
fe1b8b76 | 6080 | read_initial_length (bfd *abfd, gdb_byte *buf, struct comp_unit_head *cu_header, |
891d2f0b | 6081 | unsigned int *bytes_read) |
613e1657 | 6082 | { |
fe1b8b76 | 6083 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 6084 | |
dd373385 | 6085 | if (length == 0xffffffff) |
613e1657 | 6086 | { |
fe1b8b76 | 6087 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 6088 | *bytes_read = 12; |
613e1657 | 6089 | } |
dd373385 | 6090 | else if (length == 0) |
f7ef9339 | 6091 | { |
dd373385 | 6092 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 6093 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 6094 | *bytes_read = 8; |
f7ef9339 | 6095 | } |
613e1657 KB |
6096 | else |
6097 | { | |
6098 | *bytes_read = 4; | |
613e1657 KB |
6099 | } |
6100 | ||
dd373385 EZ |
6101 | if (cu_header) |
6102 | { | |
6103 | gdb_assert (cu_header->initial_length_size == 0 | |
6104 | || cu_header->initial_length_size == 4 | |
6105 | || cu_header->initial_length_size == 8 | |
6106 | || cu_header->initial_length_size == 12); | |
6107 | ||
6108 | if (cu_header->initial_length_size != 0 | |
6109 | && cu_header->initial_length_size != *bytes_read) | |
6110 | complaint (&symfile_complaints, | |
6111 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
6112 | ||
6113 | cu_header->initial_length_size = *bytes_read; | |
6114 | cu_header->offset_size = (*bytes_read == 4) ? 4 : 8; | |
6115 | } | |
6116 | ||
6117 | return length; | |
613e1657 KB |
6118 | } |
6119 | ||
6120 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 6121 | given by cu_header->offset_size. */ |
613e1657 KB |
6122 | |
6123 | static LONGEST | |
fe1b8b76 | 6124 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 6125 | unsigned int *bytes_read) |
613e1657 KB |
6126 | { |
6127 | LONGEST retval = 0; | |
6128 | ||
6129 | switch (cu_header->offset_size) | |
6130 | { | |
6131 | case 4: | |
fe1b8b76 | 6132 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
6133 | *bytes_read = 4; |
6134 | break; | |
6135 | case 8: | |
fe1b8b76 | 6136 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
6137 | *bytes_read = 8; |
6138 | break; | |
6139 | default: | |
8e65ff28 | 6140 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6141 | _("read_offset: bad switch [in module %s]"), |
659b0389 | 6142 | bfd_get_filename (abfd)); |
613e1657 KB |
6143 | } |
6144 | ||
917c78fc | 6145 | return retval; |
613e1657 KB |
6146 | } |
6147 | ||
fe1b8b76 JB |
6148 | static gdb_byte * |
6149 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
6150 | { |
6151 | /* If the size of a host char is 8 bits, we can return a pointer | |
6152 | to the buffer, otherwise we have to copy the data to a buffer | |
6153 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6154 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 6155 | return buf; |
c906108c SS |
6156 | } |
6157 | ||
6158 | static char * | |
fe1b8b76 | 6159 | read_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
6160 | { |
6161 | /* If the size of a host char is 8 bits, we can return a pointer | |
6162 | to the string, otherwise we have to copy the string to a buffer | |
6163 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6164 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
6165 | if (*buf == '\0') |
6166 | { | |
6167 | *bytes_read_ptr = 1; | |
6168 | return NULL; | |
6169 | } | |
fe1b8b76 JB |
6170 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
6171 | return (char *) buf; | |
4bdf3d34 JJ |
6172 | } |
6173 | ||
6174 | static char * | |
fe1b8b76 | 6175 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
6176 | const struct comp_unit_head *cu_header, |
6177 | unsigned int *bytes_read_ptr) | |
6178 | { | |
6179 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
891d2f0b | 6180 | bytes_read_ptr); |
c906108c | 6181 | |
6502dd73 | 6182 | if (dwarf2_per_objfile->str_buffer == NULL) |
c906108c | 6183 | { |
8a3fe4f8 | 6184 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 6185 | bfd_get_filename (abfd)); |
4bdf3d34 | 6186 | return NULL; |
c906108c | 6187 | } |
6502dd73 | 6188 | if (str_offset >= dwarf2_per_objfile->str_size) |
c906108c | 6189 | { |
8a3fe4f8 | 6190 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 6191 | bfd_get_filename (abfd)); |
c906108c SS |
6192 | return NULL; |
6193 | } | |
4bdf3d34 | 6194 | gdb_assert (HOST_CHAR_BIT == 8); |
6502dd73 | 6195 | if (dwarf2_per_objfile->str_buffer[str_offset] == '\0') |
4bdf3d34 | 6196 | return NULL; |
fe1b8b76 | 6197 | return (char *) (dwarf2_per_objfile->str_buffer + str_offset); |
c906108c SS |
6198 | } |
6199 | ||
ce5d95e1 | 6200 | static unsigned long |
fe1b8b76 | 6201 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6202 | { |
ce5d95e1 JB |
6203 | unsigned long result; |
6204 | unsigned int num_read; | |
c906108c SS |
6205 | int i, shift; |
6206 | unsigned char byte; | |
6207 | ||
6208 | result = 0; | |
6209 | shift = 0; | |
6210 | num_read = 0; | |
6211 | i = 0; | |
6212 | while (1) | |
6213 | { | |
fe1b8b76 | 6214 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6215 | buf++; |
6216 | num_read++; | |
ce5d95e1 | 6217 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
6218 | if ((byte & 128) == 0) |
6219 | { | |
6220 | break; | |
6221 | } | |
6222 | shift += 7; | |
6223 | } | |
6224 | *bytes_read_ptr = num_read; | |
6225 | return result; | |
6226 | } | |
6227 | ||
ce5d95e1 | 6228 | static long |
fe1b8b76 | 6229 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6230 | { |
ce5d95e1 | 6231 | long result; |
77e0b926 | 6232 | int i, shift, num_read; |
c906108c SS |
6233 | unsigned char byte; |
6234 | ||
6235 | result = 0; | |
6236 | shift = 0; | |
c906108c SS |
6237 | num_read = 0; |
6238 | i = 0; | |
6239 | while (1) | |
6240 | { | |
fe1b8b76 | 6241 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6242 | buf++; |
6243 | num_read++; | |
ce5d95e1 | 6244 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
6245 | shift += 7; |
6246 | if ((byte & 128) == 0) | |
6247 | { | |
6248 | break; | |
6249 | } | |
6250 | } | |
77e0b926 DJ |
6251 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
6252 | result |= -(((long)1) << shift); | |
c906108c SS |
6253 | *bytes_read_ptr = num_read; |
6254 | return result; | |
6255 | } | |
6256 | ||
4bb7a0a7 DJ |
6257 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
6258 | ||
fe1b8b76 JB |
6259 | static gdb_byte * |
6260 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
6261 | { |
6262 | int byte; | |
6263 | ||
6264 | while (1) | |
6265 | { | |
fe1b8b76 | 6266 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
6267 | buf++; |
6268 | if ((byte & 128) == 0) | |
6269 | return buf; | |
6270 | } | |
6271 | } | |
6272 | ||
c906108c | 6273 | static void |
e142c38c | 6274 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
6275 | { |
6276 | switch (lang) | |
6277 | { | |
6278 | case DW_LANG_C89: | |
6279 | case DW_LANG_C: | |
e142c38c | 6280 | cu->language = language_c; |
c906108c SS |
6281 | break; |
6282 | case DW_LANG_C_plus_plus: | |
e142c38c | 6283 | cu->language = language_cplus; |
c906108c SS |
6284 | break; |
6285 | case DW_LANG_Fortran77: | |
6286 | case DW_LANG_Fortran90: | |
b21b22e0 | 6287 | case DW_LANG_Fortran95: |
e142c38c | 6288 | cu->language = language_fortran; |
c906108c SS |
6289 | break; |
6290 | case DW_LANG_Mips_Assembler: | |
e142c38c | 6291 | cu->language = language_asm; |
c906108c | 6292 | break; |
bebd888e | 6293 | case DW_LANG_Java: |
e142c38c | 6294 | cu->language = language_java; |
bebd888e | 6295 | break; |
c906108c | 6296 | case DW_LANG_Ada83: |
8aaf0b47 | 6297 | case DW_LANG_Ada95: |
bc5f45f8 JB |
6298 | cu->language = language_ada; |
6299 | break; | |
72019c9c GM |
6300 | case DW_LANG_Modula2: |
6301 | cu->language = language_m2; | |
6302 | break; | |
c906108c SS |
6303 | case DW_LANG_Cobol74: |
6304 | case DW_LANG_Cobol85: | |
6305 | case DW_LANG_Pascal83: | |
c906108c | 6306 | default: |
e142c38c | 6307 | cu->language = language_minimal; |
c906108c SS |
6308 | break; |
6309 | } | |
e142c38c | 6310 | cu->language_defn = language_def (cu->language); |
c906108c SS |
6311 | } |
6312 | ||
6313 | /* Return the named attribute or NULL if not there. */ | |
6314 | ||
6315 | static struct attribute * | |
e142c38c | 6316 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
6317 | { |
6318 | unsigned int i; | |
6319 | struct attribute *spec = NULL; | |
6320 | ||
6321 | for (i = 0; i < die->num_attrs; ++i) | |
6322 | { | |
6323 | if (die->attrs[i].name == name) | |
10b3939b | 6324 | return &die->attrs[i]; |
c906108c SS |
6325 | if (die->attrs[i].name == DW_AT_specification |
6326 | || die->attrs[i].name == DW_AT_abstract_origin) | |
6327 | spec = &die->attrs[i]; | |
6328 | } | |
c906108c | 6329 | |
10b3939b DJ |
6330 | if (spec) |
6331 | return dwarf2_attr (follow_die_ref (die, spec, cu), name, cu); | |
c5aa993b | 6332 | |
c906108c SS |
6333 | return NULL; |
6334 | } | |
6335 | ||
05cf31d1 JB |
6336 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
6337 | and holds a non-zero value. This function should only be used for | |
6338 | DW_FORM_flag attributes. */ | |
6339 | ||
6340 | static int | |
6341 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
6342 | { | |
6343 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
6344 | ||
6345 | return (attr && DW_UNSND (attr)); | |
6346 | } | |
6347 | ||
3ca72b44 | 6348 | static int |
e142c38c | 6349 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 6350 | { |
05cf31d1 JB |
6351 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
6352 | which value is non-zero. However, we have to be careful with | |
6353 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
6354 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
6355 | end up accidently finding a declaration attribute that belongs | |
6356 | to a different DIE referenced by the specification attribute, | |
6357 | even though the given DIE does not have a declaration attribute. */ | |
6358 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
6359 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
6360 | } |
6361 | ||
63d06c5c DC |
6362 | /* Return the die giving the specification for DIE, if there is |
6363 | one. */ | |
6364 | ||
6365 | static struct die_info * | |
e142c38c | 6366 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 6367 | { |
e142c38c | 6368 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
6369 | |
6370 | if (spec_attr == NULL) | |
6371 | return NULL; | |
6372 | else | |
10b3939b | 6373 | return follow_die_ref (die, spec_attr, cu); |
63d06c5c | 6374 | } |
c906108c | 6375 | |
debd256d JB |
6376 | /* Free the line_header structure *LH, and any arrays and strings it |
6377 | refers to. */ | |
6378 | static void | |
6379 | free_line_header (struct line_header *lh) | |
6380 | { | |
6381 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 6382 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
6383 | |
6384 | /* Remember that all the lh->file_names[i].name pointers are | |
6385 | pointers into debug_line_buffer, and don't need to be freed. */ | |
6386 | if (lh->file_names) | |
a8bc7b56 | 6387 | xfree (lh->file_names); |
debd256d JB |
6388 | |
6389 | /* Similarly for the include directory names. */ | |
6390 | if (lh->include_dirs) | |
a8bc7b56 | 6391 | xfree (lh->include_dirs); |
debd256d | 6392 | |
a8bc7b56 | 6393 | xfree (lh); |
debd256d JB |
6394 | } |
6395 | ||
6396 | ||
6397 | /* Add an entry to LH's include directory table. */ | |
6398 | static void | |
6399 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 6400 | { |
debd256d JB |
6401 | /* Grow the array if necessary. */ |
6402 | if (lh->include_dirs_size == 0) | |
c5aa993b | 6403 | { |
debd256d JB |
6404 | lh->include_dirs_size = 1; /* for testing */ |
6405 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
6406 | * sizeof (*lh->include_dirs)); | |
6407 | } | |
6408 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
6409 | { | |
6410 | lh->include_dirs_size *= 2; | |
6411 | lh->include_dirs = xrealloc (lh->include_dirs, | |
6412 | (lh->include_dirs_size | |
6413 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 6414 | } |
c906108c | 6415 | |
debd256d JB |
6416 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
6417 | } | |
6418 | ||
6419 | ||
6420 | /* Add an entry to LH's file name table. */ | |
6421 | static void | |
6422 | add_file_name (struct line_header *lh, | |
6423 | char *name, | |
6424 | unsigned int dir_index, | |
6425 | unsigned int mod_time, | |
6426 | unsigned int length) | |
6427 | { | |
6428 | struct file_entry *fe; | |
6429 | ||
6430 | /* Grow the array if necessary. */ | |
6431 | if (lh->file_names_size == 0) | |
6432 | { | |
6433 | lh->file_names_size = 1; /* for testing */ | |
6434 | lh->file_names = xmalloc (lh->file_names_size | |
6435 | * sizeof (*lh->file_names)); | |
6436 | } | |
6437 | else if (lh->num_file_names >= lh->file_names_size) | |
6438 | { | |
6439 | lh->file_names_size *= 2; | |
6440 | lh->file_names = xrealloc (lh->file_names, | |
6441 | (lh->file_names_size | |
6442 | * sizeof (*lh->file_names))); | |
6443 | } | |
6444 | ||
6445 | fe = &lh->file_names[lh->num_file_names++]; | |
6446 | fe->name = name; | |
6447 | fe->dir_index = dir_index; | |
6448 | fe->mod_time = mod_time; | |
6449 | fe->length = length; | |
aaa75496 | 6450 | fe->included_p = 0; |
debd256d JB |
6451 | } |
6452 | ||
6453 | ||
6454 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
6455 | .debug_line, according to the endianness of ABFD. Return a pointer |
6456 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
6457 | |
6458 | NOTE: the strings in the include directory and file name tables of | |
6459 | the returned object point into debug_line_buffer, and must not be | |
6460 | freed. */ | |
6461 | static struct line_header * | |
6462 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 6463 | struct dwarf2_cu *cu) |
debd256d JB |
6464 | { |
6465 | struct cleanup *back_to; | |
6466 | struct line_header *lh; | |
fe1b8b76 | 6467 | gdb_byte *line_ptr; |
891d2f0b | 6468 | unsigned int bytes_read; |
debd256d JB |
6469 | int i; |
6470 | char *cur_dir, *cur_file; | |
6471 | ||
6502dd73 | 6472 | if (dwarf2_per_objfile->line_buffer == NULL) |
debd256d | 6473 | { |
e2e0b3e5 | 6474 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
6475 | return 0; |
6476 | } | |
6477 | ||
a738430d MK |
6478 | /* Make sure that at least there's room for the total_length field. |
6479 | That could be 12 bytes long, but we're just going to fudge that. */ | |
6502dd73 | 6480 | if (offset + 4 >= dwarf2_per_objfile->line_size) |
debd256d | 6481 | { |
4d3c2250 | 6482 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6483 | return 0; |
6484 | } | |
6485 | ||
6486 | lh = xmalloc (sizeof (*lh)); | |
6487 | memset (lh, 0, sizeof (*lh)); | |
6488 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
6489 | (void *) lh); | |
6490 | ||
6502dd73 | 6491 | line_ptr = dwarf2_per_objfile->line_buffer + offset; |
debd256d | 6492 | |
a738430d | 6493 | /* Read in the header. */ |
dd373385 EZ |
6494 | lh->total_length = |
6495 | read_initial_length (abfd, line_ptr, &cu->header, &bytes_read); | |
debd256d | 6496 | line_ptr += bytes_read; |
6502dd73 DJ |
6497 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line_buffer |
6498 | + dwarf2_per_objfile->line_size)) | |
debd256d | 6499 | { |
4d3c2250 | 6500 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6501 | return 0; |
6502 | } | |
6503 | lh->statement_program_end = line_ptr + lh->total_length; | |
6504 | lh->version = read_2_bytes (abfd, line_ptr); | |
6505 | line_ptr += 2; | |
e7c27a73 | 6506 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
6507 | line_ptr += bytes_read; |
6508 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
6509 | line_ptr += 1; | |
6510 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
6511 | line_ptr += 1; | |
6512 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
6513 | line_ptr += 1; | |
6514 | lh->line_range = read_1_byte (abfd, line_ptr); | |
6515 | line_ptr += 1; | |
6516 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
6517 | line_ptr += 1; | |
6518 | lh->standard_opcode_lengths | |
fe1b8b76 | 6519 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
6520 | |
6521 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
6522 | for (i = 1; i < lh->opcode_base; ++i) | |
6523 | { | |
6524 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
6525 | line_ptr += 1; | |
6526 | } | |
6527 | ||
a738430d | 6528 | /* Read directory table. */ |
debd256d JB |
6529 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6530 | { | |
6531 | line_ptr += bytes_read; | |
6532 | add_include_dir (lh, cur_dir); | |
6533 | } | |
6534 | line_ptr += bytes_read; | |
6535 | ||
a738430d | 6536 | /* Read file name table. */ |
debd256d JB |
6537 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6538 | { | |
6539 | unsigned int dir_index, mod_time, length; | |
6540 | ||
6541 | line_ptr += bytes_read; | |
6542 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6543 | line_ptr += bytes_read; | |
6544 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6545 | line_ptr += bytes_read; | |
6546 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6547 | line_ptr += bytes_read; | |
6548 | ||
6549 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6550 | } | |
6551 | line_ptr += bytes_read; | |
6552 | lh->statement_program_start = line_ptr; | |
6553 | ||
6502dd73 DJ |
6554 | if (line_ptr > (dwarf2_per_objfile->line_buffer |
6555 | + dwarf2_per_objfile->line_size)) | |
4d3c2250 | 6556 | complaint (&symfile_complaints, |
e2e0b3e5 | 6557 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
6558 | |
6559 | discard_cleanups (back_to); | |
6560 | return lh; | |
6561 | } | |
c906108c | 6562 | |
5fb290d7 DJ |
6563 | /* This function exists to work around a bug in certain compilers |
6564 | (particularly GCC 2.95), in which the first line number marker of a | |
6565 | function does not show up until after the prologue, right before | |
6566 | the second line number marker. This function shifts ADDRESS down | |
6567 | to the beginning of the function if necessary, and is called on | |
6568 | addresses passed to record_line. */ | |
6569 | ||
6570 | static CORE_ADDR | |
e142c38c | 6571 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
6572 | { |
6573 | struct function_range *fn; | |
6574 | ||
6575 | /* Find the function_range containing address. */ | |
e142c38c | 6576 | if (!cu->first_fn) |
5fb290d7 DJ |
6577 | return address; |
6578 | ||
e142c38c DJ |
6579 | if (!cu->cached_fn) |
6580 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 6581 | |
e142c38c | 6582 | fn = cu->cached_fn; |
5fb290d7 DJ |
6583 | while (fn) |
6584 | if (fn->lowpc <= address && fn->highpc > address) | |
6585 | goto found; | |
6586 | else | |
6587 | fn = fn->next; | |
6588 | ||
e142c38c DJ |
6589 | fn = cu->first_fn; |
6590 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
6591 | if (fn->lowpc <= address && fn->highpc > address) |
6592 | goto found; | |
6593 | else | |
6594 | fn = fn->next; | |
6595 | ||
6596 | return address; | |
6597 | ||
6598 | found: | |
6599 | if (fn->seen_line) | |
6600 | return address; | |
6601 | if (address != fn->lowpc) | |
4d3c2250 | 6602 | complaint (&symfile_complaints, |
e2e0b3e5 | 6603 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 6604 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
6605 | fn->seen_line = 1; |
6606 | return fn->lowpc; | |
6607 | } | |
6608 | ||
aaa75496 JB |
6609 | /* Decode the Line Number Program (LNP) for the given line_header |
6610 | structure and CU. The actual information extracted and the type | |
6611 | of structures created from the LNP depends on the value of PST. | |
6612 | ||
6613 | 1. If PST is NULL, then this procedure uses the data from the program | |
6614 | to create all necessary symbol tables, and their linetables. | |
6615 | The compilation directory of the file is passed in COMP_DIR, | |
6616 | and must not be NULL. | |
6617 | ||
6618 | 2. If PST is not NULL, this procedure reads the program to determine | |
6619 | the list of files included by the unit represented by PST, and | |
6620 | builds all the associated partial symbol tables. In this case, | |
6621 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
6622 | is not used to compute the full name of the symtab, and therefore | |
6623 | omitting it when building the partial symtab does not introduce | |
6624 | the potential for inconsistency - a partial symtab and its associated | |
6625 | symbtab having a different fullname -). */ | |
debd256d | 6626 | |
c906108c | 6627 | static void |
debd256d | 6628 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 6629 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 6630 | { |
fe1b8b76 JB |
6631 | gdb_byte *line_ptr; |
6632 | gdb_byte *line_end; | |
e7c27a73 | 6633 | unsigned int bytes_read; |
c906108c | 6634 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
6635 | CORE_ADDR baseaddr; |
6636 | struct objfile *objfile = cu->objfile; | |
aaa75496 | 6637 | const int decode_for_pst_p = (pst != NULL); |
366da635 | 6638 | struct subfile *last_subfile = NULL; |
e142c38c DJ |
6639 | |
6640 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6641 | |
debd256d JB |
6642 | line_ptr = lh->statement_program_start; |
6643 | line_end = lh->statement_program_end; | |
c906108c SS |
6644 | |
6645 | /* Read the statement sequences until there's nothing left. */ | |
6646 | while (line_ptr < line_end) | |
6647 | { | |
6648 | /* state machine registers */ | |
6649 | CORE_ADDR address = 0; | |
6650 | unsigned int file = 1; | |
6651 | unsigned int line = 1; | |
6652 | unsigned int column = 0; | |
debd256d | 6653 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
6654 | int basic_block = 0; |
6655 | int end_sequence = 0; | |
6656 | ||
aaa75496 | 6657 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 6658 | { |
aaa75496 | 6659 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
6660 | /* lh->include_dirs and lh->file_names are 0-based, but the |
6661 | directory and file name numbers in the statement program | |
6662 | are 1-based. */ | |
6663 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 6664 | char *dir = NULL; |
a738430d | 6665 | |
debd256d JB |
6666 | if (fe->dir_index) |
6667 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
6668 | |
6669 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
6670 | } |
6671 | ||
a738430d | 6672 | /* Decode the table. */ |
c5aa993b | 6673 | while (!end_sequence) |
c906108c SS |
6674 | { |
6675 | op_code = read_1_byte (abfd, line_ptr); | |
6676 | line_ptr += 1; | |
9aa1fe7e | 6677 | |
debd256d | 6678 | if (op_code >= lh->opcode_base) |
a738430d MK |
6679 | { |
6680 | /* Special operand. */ | |
debd256d JB |
6681 | adj_opcode = op_code - lh->opcode_base; |
6682 | address += (adj_opcode / lh->line_range) | |
6683 | * lh->minimum_instruction_length; | |
6684 | line += lh->line_base + (adj_opcode % lh->line_range); | |
aa495d11 | 6685 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6686 | if (!decode_for_pst_p) |
6687 | { | |
366da635 DJ |
6688 | if (last_subfile != current_subfile) |
6689 | { | |
6690 | if (last_subfile) | |
6691 | record_line (last_subfile, 0, address); | |
6692 | last_subfile = current_subfile; | |
6693 | } | |
a738430d | 6694 | /* Append row to matrix using current values. */ |
aaa75496 JB |
6695 | record_line (current_subfile, line, |
6696 | check_cu_functions (address, cu)); | |
6697 | } | |
9aa1fe7e GK |
6698 | basic_block = 1; |
6699 | } | |
6700 | else switch (op_code) | |
c906108c SS |
6701 | { |
6702 | case DW_LNS_extended_op: | |
473b7be6 DJ |
6703 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6704 | line_ptr += bytes_read; | |
c906108c SS |
6705 | extended_op = read_1_byte (abfd, line_ptr); |
6706 | line_ptr += 1; | |
6707 | switch (extended_op) | |
6708 | { | |
6709 | case DW_LNE_end_sequence: | |
6710 | end_sequence = 1; | |
aa495d11 | 6711 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6712 | if (!decode_for_pst_p) |
6713 | record_line (current_subfile, 0, address); | |
c906108c SS |
6714 | break; |
6715 | case DW_LNE_set_address: | |
e7c27a73 | 6716 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
6717 | line_ptr += bytes_read; |
6718 | address += baseaddr; | |
c906108c SS |
6719 | break; |
6720 | case DW_LNE_define_file: | |
debd256d JB |
6721 | { |
6722 | char *cur_file; | |
6723 | unsigned int dir_index, mod_time, length; | |
6724 | ||
6725 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
6726 | line_ptr += bytes_read; | |
6727 | dir_index = | |
6728 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6729 | line_ptr += bytes_read; | |
6730 | mod_time = | |
6731 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6732 | line_ptr += bytes_read; | |
6733 | length = | |
6734 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6735 | line_ptr += bytes_read; | |
6736 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6737 | } | |
c906108c SS |
6738 | break; |
6739 | default: | |
4d3c2250 | 6740 | complaint (&symfile_complaints, |
e2e0b3e5 | 6741 | _("mangled .debug_line section")); |
debd256d | 6742 | return; |
c906108c SS |
6743 | } |
6744 | break; | |
6745 | case DW_LNS_copy: | |
aa495d11 | 6746 | lh->file_names[file - 1].included_p = 1; |
aaa75496 | 6747 | if (!decode_for_pst_p) |
366da635 DJ |
6748 | { |
6749 | if (last_subfile != current_subfile) | |
6750 | { | |
6751 | if (last_subfile) | |
6752 | record_line (last_subfile, 0, address); | |
6753 | last_subfile = current_subfile; | |
6754 | } | |
6755 | record_line (current_subfile, line, | |
6756 | check_cu_functions (address, cu)); | |
6757 | } | |
c906108c SS |
6758 | basic_block = 0; |
6759 | break; | |
6760 | case DW_LNS_advance_pc: | |
debd256d | 6761 | address += lh->minimum_instruction_length |
c906108c SS |
6762 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6763 | line_ptr += bytes_read; | |
6764 | break; | |
6765 | case DW_LNS_advance_line: | |
6766 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
6767 | line_ptr += bytes_read; | |
6768 | break; | |
6769 | case DW_LNS_set_file: | |
debd256d | 6770 | { |
a738430d MK |
6771 | /* The arrays lh->include_dirs and lh->file_names are |
6772 | 0-based, but the directory and file name numbers in | |
6773 | the statement program are 1-based. */ | |
debd256d | 6774 | struct file_entry *fe; |
4f1520fb | 6775 | char *dir = NULL; |
a738430d | 6776 | |
debd256d JB |
6777 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6778 | line_ptr += bytes_read; | |
6779 | fe = &lh->file_names[file - 1]; | |
6780 | if (fe->dir_index) | |
6781 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb | 6782 | |
aaa75496 | 6783 | if (!decode_for_pst_p) |
366da635 DJ |
6784 | { |
6785 | last_subfile = current_subfile; | |
6786 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
6787 | } | |
debd256d | 6788 | } |
c906108c SS |
6789 | break; |
6790 | case DW_LNS_set_column: | |
6791 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6792 | line_ptr += bytes_read; | |
6793 | break; | |
6794 | case DW_LNS_negate_stmt: | |
6795 | is_stmt = (!is_stmt); | |
6796 | break; | |
6797 | case DW_LNS_set_basic_block: | |
6798 | basic_block = 1; | |
6799 | break; | |
c2c6d25f JM |
6800 | /* Add to the address register of the state machine the |
6801 | address increment value corresponding to special opcode | |
a738430d MK |
6802 | 255. I.e., this value is scaled by the minimum |
6803 | instruction length since special opcode 255 would have | |
6804 | scaled the the increment. */ | |
c906108c | 6805 | case DW_LNS_const_add_pc: |
debd256d JB |
6806 | address += (lh->minimum_instruction_length |
6807 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
6808 | break; |
6809 | case DW_LNS_fixed_advance_pc: | |
6810 | address += read_2_bytes (abfd, line_ptr); | |
6811 | line_ptr += 2; | |
6812 | break; | |
9aa1fe7e | 6813 | default: |
a738430d MK |
6814 | { |
6815 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 6816 | int i; |
a738430d | 6817 | |
debd256d | 6818 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
6819 | { |
6820 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6821 | line_ptr += bytes_read; | |
6822 | } | |
6823 | } | |
c906108c SS |
6824 | } |
6825 | } | |
6826 | } | |
aaa75496 JB |
6827 | |
6828 | if (decode_for_pst_p) | |
6829 | { | |
6830 | int file_index; | |
6831 | ||
6832 | /* Now that we're done scanning the Line Header Program, we can | |
6833 | create the psymtab of each included file. */ | |
6834 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
6835 | if (lh->file_names[file_index].included_p == 1) | |
6836 | { | |
5b5464ad JB |
6837 | const struct file_entry fe = lh->file_names [file_index]; |
6838 | char *include_name = fe.name; | |
6839 | char *dir_name = NULL; | |
6840 | char *pst_filename = pst->filename; | |
6841 | ||
6842 | if (fe.dir_index) | |
6843 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
6844 | ||
6845 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
6846 | { | |
1754f103 MK |
6847 | include_name = concat (dir_name, SLASH_STRING, |
6848 | include_name, (char *)NULL); | |
5b5464ad JB |
6849 | make_cleanup (xfree, include_name); |
6850 | } | |
6851 | ||
6852 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
6853 | { | |
1754f103 MK |
6854 | pst_filename = concat (pst->dirname, SLASH_STRING, |
6855 | pst_filename, (char *)NULL); | |
5b5464ad JB |
6856 | make_cleanup (xfree, pst_filename); |
6857 | } | |
6858 | ||
6859 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
6860 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
6861 | } | |
6862 | } | |
c906108c SS |
6863 | } |
6864 | ||
6865 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
6866 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
6867 | or NULL if not known. COMP_DIR is the compilation directory for the |
6868 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
6869 | This routine tries to keep line numbers from identical absolute and |
6870 | relative file names in a common subfile. | |
6871 | ||
6872 | Using the `list' example from the GDB testsuite, which resides in | |
6873 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
6874 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
6875 | ||
c5aa993b JM |
6876 | DW_AT_name: /srcdir/list0.c |
6877 | DW_AT_comp_dir: /compdir | |
357e46e7 | 6878 | files.files[0].name: list0.h |
c5aa993b | 6879 | files.files[0].dir: /srcdir |
357e46e7 | 6880 | files.files[1].name: list0.c |
c5aa993b | 6881 | files.files[1].dir: /srcdir |
c906108c SS |
6882 | |
6883 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
6884 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
6885 | start_subfile will ensure that this happens provided that we pass the | |
6886 | concatenation of files.files[1].dir and files.files[1].name as the | |
6887 | subfile's name. */ | |
c906108c SS |
6888 | |
6889 | static void | |
4f1520fb | 6890 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 6891 | { |
4f1520fb FR |
6892 | char *fullname; |
6893 | ||
6894 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
6895 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
6896 | second argument to start_subfile. To be consistent, we do the | |
6897 | same here. In order not to lose the line information directory, | |
6898 | we concatenate it to the filename when it makes sense. | |
6899 | Note that the Dwarf3 standard says (speaking of filenames in line | |
6900 | information): ``The directory index is ignored for file names | |
6901 | that represent full path names''. Thus ignoring dirname in the | |
6902 | `else' branch below isn't an issue. */ | |
c906108c | 6903 | |
d5166ae1 | 6904 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
6905 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
6906 | else | |
6907 | fullname = filename; | |
c906108c | 6908 | |
4f1520fb FR |
6909 | start_subfile (fullname, comp_dir); |
6910 | ||
6911 | if (fullname != filename) | |
6912 | xfree (fullname); | |
c906108c SS |
6913 | } |
6914 | ||
4c2df51b DJ |
6915 | static void |
6916 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 6917 | struct dwarf2_cu *cu) |
4c2df51b | 6918 | { |
e7c27a73 DJ |
6919 | struct objfile *objfile = cu->objfile; |
6920 | struct comp_unit_head *cu_header = &cu->header; | |
6921 | ||
4c2df51b DJ |
6922 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
6923 | code here to turn a symbol with DW_AT_external and a | |
6924 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
6925 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
6926 | with some versions of binutils) where shared libraries could have | |
6927 | relocations against symbols in their debug information - the | |
6928 | minimal symbol would have the right address, but the debug info | |
6929 | would not. It's no longer necessary, because we will explicitly | |
6930 | apply relocations when we read in the debug information now. */ | |
6931 | ||
6932 | /* A DW_AT_location attribute with no contents indicates that a | |
6933 | variable has been optimized away. */ | |
6934 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
6935 | { | |
6936 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
6937 | return; | |
6938 | } | |
6939 | ||
6940 | /* Handle one degenerate form of location expression specially, to | |
6941 | preserve GDB's previous behavior when section offsets are | |
6942 | specified. If this is just a DW_OP_addr then mark this symbol | |
6943 | as LOC_STATIC. */ | |
6944 | ||
6945 | if (attr_form_is_block (attr) | |
6946 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
6947 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
6948 | { | |
891d2f0b | 6949 | unsigned int dummy; |
4c2df51b DJ |
6950 | |
6951 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 6952 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
6953 | fixup_symbol_section (sym, objfile); |
6954 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
6955 | SYMBOL_SECTION (sym)); | |
6956 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
6957 | return; | |
6958 | } | |
6959 | ||
6960 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
6961 | expression evaluator, and use LOC_COMPUTED only when necessary | |
6962 | (i.e. when the value of a register or memory location is | |
6963 | referenced, or a thread-local block, etc.). Then again, it might | |
6964 | not be worthwhile. I'm assuming that it isn't unless performance | |
6965 | or memory numbers show me otherwise. */ | |
6966 | ||
e7c27a73 | 6967 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
6968 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
6969 | } | |
6970 | ||
c906108c SS |
6971 | /* Given a pointer to a DWARF information entry, figure out if we need |
6972 | to make a symbol table entry for it, and if so, create a new entry | |
6973 | and return a pointer to it. | |
6974 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 6975 | used the passed type. */ |
c906108c SS |
6976 | |
6977 | static struct symbol * | |
e7c27a73 | 6978 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 6979 | { |
e7c27a73 | 6980 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6981 | struct symbol *sym = NULL; |
6982 | char *name; | |
6983 | struct attribute *attr = NULL; | |
6984 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
6985 | CORE_ADDR baseaddr; |
6986 | ||
6987 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6988 | |
5c4e30ca | 6989 | if (die->tag != DW_TAG_namespace) |
e142c38c | 6990 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
6991 | else |
6992 | name = TYPE_NAME (type); | |
6993 | ||
c906108c SS |
6994 | if (name) |
6995 | { | |
4a146b47 | 6996 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
6997 | sizeof (struct symbol)); |
6998 | OBJSTAT (objfile, n_syms++); | |
6999 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
7000 | |
7001 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 7002 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 7003 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
7004 | |
7005 | /* Default assumptions. | |
c5aa993b | 7006 | Use the passed type or decode it from the die. */ |
176620f1 | 7007 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 7008 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
7009 | if (type != NULL) |
7010 | SYMBOL_TYPE (sym) = type; | |
7011 | else | |
e7c27a73 | 7012 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 7013 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
7014 | if (attr) |
7015 | { | |
7016 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
7017 | } | |
c906108c SS |
7018 | switch (die->tag) |
7019 | { | |
7020 | case DW_TAG_label: | |
e142c38c | 7021 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
7022 | if (attr) |
7023 | { | |
7024 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
7025 | } | |
7026 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
7027 | break; | |
7028 | case DW_TAG_subprogram: | |
7029 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
7030 | finish_block. */ | |
7031 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 7032 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
7033 | if (attr2 && (DW_UNSND (attr2) != 0)) |
7034 | { | |
7035 | add_symbol_to_list (sym, &global_symbols); | |
7036 | } | |
7037 | else | |
7038 | { | |
e142c38c | 7039 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7040 | } |
7041 | break; | |
7042 | case DW_TAG_variable: | |
7043 | /* Compilation with minimal debug info may result in variables | |
7044 | with missing type entries. Change the misleading `void' type | |
7045 | to something sensible. */ | |
7046 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
7047 | SYMBOL_TYPE (sym) = init_type (TYPE_CODE_INT, | |
7048 | TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
7049 | "<variable, no debug info>", | |
7050 | objfile); | |
e142c38c | 7051 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7052 | if (attr) |
7053 | { | |
e7c27a73 | 7054 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 7055 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
7056 | if (attr2 && (DW_UNSND (attr2) != 0)) |
7057 | add_symbol_to_list (sym, &global_symbols); | |
7058 | else | |
e142c38c | 7059 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7060 | break; |
7061 | } | |
e142c38c | 7062 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7063 | if (attr) |
7064 | { | |
e7c27a73 | 7065 | var_decode_location (attr, sym, cu); |
e142c38c | 7066 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7067 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 7068 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 7069 | else |
e142c38c | 7070 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7071 | } |
7072 | else | |
7073 | { | |
7074 | /* We do not know the address of this symbol. | |
c5aa993b JM |
7075 | If it is an external symbol and we have type information |
7076 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
7077 | The address of the variable will then be determined from | |
7078 | the minimal symbol table whenever the variable is | |
7079 | referenced. */ | |
e142c38c | 7080 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7081 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 7082 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
7083 | { |
7084 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
7085 | add_symbol_to_list (sym, &global_symbols); | |
7086 | } | |
7087 | } | |
7088 | break; | |
7089 | case DW_TAG_formal_parameter: | |
e142c38c | 7090 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7091 | if (attr) |
7092 | { | |
e7c27a73 | 7093 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
7094 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
7095 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
7096 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 7097 | } |
e142c38c | 7098 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7099 | if (attr) |
7100 | { | |
e7c27a73 | 7101 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7102 | } |
e142c38c | 7103 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7104 | break; |
7105 | case DW_TAG_unspecified_parameters: | |
7106 | /* From varargs functions; gdb doesn't seem to have any | |
7107 | interest in this information, so just ignore it for now. | |
7108 | (FIXME?) */ | |
7109 | break; | |
7110 | case DW_TAG_class_type: | |
7111 | case DW_TAG_structure_type: | |
7112 | case DW_TAG_union_type: | |
72019c9c | 7113 | case DW_TAG_set_type: |
c906108c SS |
7114 | case DW_TAG_enumeration_type: |
7115 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 7116 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 7117 | |
63d06c5c DC |
7118 | /* Make sure that the symbol includes appropriate enclosing |
7119 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 7120 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
7121 | the type. */ |
7122 | ||
987504bb JJ |
7123 | if (cu->language == language_cplus |
7124 | || cu->language == language_java) | |
c906108c | 7125 | { |
63d06c5c DC |
7126 | struct type *type = SYMBOL_TYPE (sym); |
7127 | ||
7128 | if (TYPE_TAG_NAME (type) != NULL) | |
7129 | { | |
7130 | /* FIXME: carlton/2003-11-10: Should this use | |
7131 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
7132 | arises further down in this function.) */ |
7133 | /* The type's name is already allocated along with | |
7134 | this objfile, so we don't need to duplicate it | |
7135 | for the symbol. */ | |
7136 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 7137 | } |
c906108c | 7138 | } |
63d06c5c DC |
7139 | |
7140 | { | |
987504bb | 7141 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
7142 | really ever be static objects: otherwise, if you try |
7143 | to, say, break of a class's method and you're in a file | |
7144 | which doesn't mention that class, it won't work unless | |
7145 | the check for all static symbols in lookup_symbol_aux | |
7146 | saves you. See the OtherFileClass tests in | |
7147 | gdb.c++/namespace.exp. */ | |
7148 | ||
7149 | struct pending **list_to_add; | |
7150 | ||
e142c38c | 7151 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7152 | && (cu->language == language_cplus |
7153 | || cu->language == language_java) | |
e142c38c | 7154 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7155 | |
7156 | add_symbol_to_list (sym, list_to_add); | |
7157 | ||
7158 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb JJ |
7159 | defines a typedef for "foo". A Java class declaration also |
7160 | defines a typedef for the class. Synthesize a typedef symbol | |
7161 | so that "ptype foo" works as expected. */ | |
7162 | if (cu->language == language_cplus | |
7163 | || cu->language == language_java) | |
63d06c5c DC |
7164 | { |
7165 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 7166 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
7167 | sizeof (struct symbol)); |
7168 | *typedef_sym = *sym; | |
7169 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
d8151005 DJ |
7170 | /* The symbol's name is already allocated along with |
7171 | this objfile, so we don't need to duplicate it for | |
7172 | the type. */ | |
63d06c5c | 7173 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 7174 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
7175 | add_symbol_to_list (typedef_sym, list_to_add); |
7176 | } | |
7177 | } | |
c906108c SS |
7178 | break; |
7179 | case DW_TAG_typedef: | |
63d06c5c DC |
7180 | if (processing_has_namespace_info |
7181 | && processing_current_prefix[0] != '\0') | |
7182 | { | |
987504bb JJ |
7183 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7184 | processing_current_prefix, | |
7185 | name, cu); | |
63d06c5c DC |
7186 | } |
7187 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7188 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 7189 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 7190 | break; |
c906108c | 7191 | case DW_TAG_base_type: |
a02abb62 | 7192 | case DW_TAG_subrange_type: |
c906108c | 7193 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 7194 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 7195 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7196 | break; |
7197 | case DW_TAG_enumerator: | |
63d06c5c DC |
7198 | if (processing_has_namespace_info |
7199 | && processing_current_prefix[0] != '\0') | |
7200 | { | |
987504bb JJ |
7201 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7202 | processing_current_prefix, | |
7203 | name, cu); | |
63d06c5c | 7204 | } |
e142c38c | 7205 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7206 | if (attr) |
7207 | { | |
e7c27a73 | 7208 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7209 | } |
63d06c5c DC |
7210 | { |
7211 | /* NOTE: carlton/2003-11-10: See comment above in the | |
7212 | DW_TAG_class_type, etc. block. */ | |
7213 | ||
7214 | struct pending **list_to_add; | |
7215 | ||
e142c38c | 7216 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7217 | && (cu->language == language_cplus |
7218 | || cu->language == language_java) | |
e142c38c | 7219 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7220 | |
7221 | add_symbol_to_list (sym, list_to_add); | |
7222 | } | |
c906108c | 7223 | break; |
5c4e30ca DC |
7224 | case DW_TAG_namespace: |
7225 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7226 | add_symbol_to_list (sym, &global_symbols); | |
7227 | break; | |
c906108c SS |
7228 | default: |
7229 | /* Not a tag we recognize. Hopefully we aren't processing | |
7230 | trash data, but since we must specifically ignore things | |
7231 | we don't recognize, there is nothing else we should do at | |
7232 | this point. */ | |
e2e0b3e5 | 7233 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 7234 | dwarf_tag_name (die->tag)); |
c906108c SS |
7235 | break; |
7236 | } | |
7237 | } | |
7238 | return (sym); | |
7239 | } | |
7240 | ||
7241 | /* Copy constant value from an attribute to a symbol. */ | |
7242 | ||
7243 | static void | |
107d2387 | 7244 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 7245 | struct dwarf2_cu *cu) |
c906108c | 7246 | { |
e7c27a73 DJ |
7247 | struct objfile *objfile = cu->objfile; |
7248 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7249 | struct dwarf_block *blk; |
7250 | ||
7251 | switch (attr->form) | |
7252 | { | |
7253 | case DW_FORM_addr: | |
107d2387 | 7254 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 7255 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7256 | cu_header->addr_size, |
7257 | TYPE_LENGTH (SYMBOL_TYPE | |
7258 | (sym))); | |
4e38b386 | 7259 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7260 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
7261 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
7262 | it's body - store_unsigned_integer. */ | |
7263 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
7264 | DW_ADDR (attr)); | |
c906108c SS |
7265 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
7266 | break; | |
7267 | case DW_FORM_block1: | |
7268 | case DW_FORM_block2: | |
7269 | case DW_FORM_block4: | |
7270 | case DW_FORM_block: | |
7271 | blk = DW_BLOCK (attr); | |
7272 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 7273 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7274 | blk->size, |
7275 | TYPE_LENGTH (SYMBOL_TYPE | |
7276 | (sym))); | |
4e38b386 | 7277 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7278 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
7279 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
7280 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7281 | break; | |
2df3850c JM |
7282 | |
7283 | /* The DW_AT_const_value attributes are supposed to carry the | |
7284 | symbol's value "represented as it would be on the target | |
7285 | architecture." By the time we get here, it's already been | |
7286 | converted to host endianness, so we just need to sign- or | |
7287 | zero-extend it as appropriate. */ | |
7288 | case DW_FORM_data1: | |
7289 | dwarf2_const_value_data (attr, sym, 8); | |
7290 | break; | |
c906108c | 7291 | case DW_FORM_data2: |
2df3850c JM |
7292 | dwarf2_const_value_data (attr, sym, 16); |
7293 | break; | |
c906108c | 7294 | case DW_FORM_data4: |
2df3850c JM |
7295 | dwarf2_const_value_data (attr, sym, 32); |
7296 | break; | |
c906108c | 7297 | case DW_FORM_data8: |
2df3850c JM |
7298 | dwarf2_const_value_data (attr, sym, 64); |
7299 | break; | |
7300 | ||
c906108c | 7301 | case DW_FORM_sdata: |
2df3850c JM |
7302 | SYMBOL_VALUE (sym) = DW_SND (attr); |
7303 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7304 | break; | |
7305 | ||
c906108c SS |
7306 | case DW_FORM_udata: |
7307 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
7308 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7309 | break; | |
2df3850c | 7310 | |
c906108c | 7311 | default: |
4d3c2250 | 7312 | complaint (&symfile_complaints, |
e2e0b3e5 | 7313 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 7314 | dwarf_form_name (attr->form)); |
c906108c SS |
7315 | SYMBOL_VALUE (sym) = 0; |
7316 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7317 | break; | |
7318 | } | |
7319 | } | |
7320 | ||
2df3850c JM |
7321 | |
7322 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
7323 | or zero-extend it as appropriate for the symbol's type. */ | |
7324 | static void | |
7325 | dwarf2_const_value_data (struct attribute *attr, | |
7326 | struct symbol *sym, | |
7327 | int bits) | |
7328 | { | |
7329 | LONGEST l = DW_UNSND (attr); | |
7330 | ||
7331 | if (bits < sizeof (l) * 8) | |
7332 | { | |
7333 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
7334 | l &= ((LONGEST) 1 << bits) - 1; | |
7335 | else | |
bf9198f1 | 7336 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
7337 | } |
7338 | ||
7339 | SYMBOL_VALUE (sym) = l; | |
7340 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7341 | } | |
7342 | ||
7343 | ||
c906108c SS |
7344 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
7345 | ||
7346 | static struct type * | |
e7c27a73 | 7347 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7348 | { |
7349 | struct type *type; | |
7350 | struct attribute *type_attr; | |
7351 | struct die_info *type_die; | |
c906108c | 7352 | |
e142c38c | 7353 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
7354 | if (!type_attr) |
7355 | { | |
7356 | /* A missing DW_AT_type represents a void type. */ | |
e142c38c | 7357 | return dwarf2_fundamental_type (cu->objfile, FT_VOID, cu); |
c906108c SS |
7358 | } |
7359 | else | |
10b3939b DJ |
7360 | type_die = follow_die_ref (die, type_attr, cu); |
7361 | ||
e7c27a73 | 7362 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7363 | if (!type) |
7364 | { | |
7365 | dump_die (type_die); | |
8a3fe4f8 | 7366 | error (_("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]"), |
e7c27a73 | 7367 | cu->objfile->name); |
c906108c SS |
7368 | } |
7369 | return type; | |
7370 | } | |
7371 | ||
7372 | /* Return the containing type of the die in question using its | |
7373 | DW_AT_containing_type attribute. */ | |
7374 | ||
7375 | static struct type * | |
e7c27a73 | 7376 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7377 | { |
7378 | struct type *type = NULL; | |
7379 | struct attribute *type_attr; | |
7380 | struct die_info *type_die = NULL; | |
c906108c | 7381 | |
e142c38c | 7382 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
7383 | if (type_attr) |
7384 | { | |
10b3939b | 7385 | type_die = follow_die_ref (die, type_attr, cu); |
e7c27a73 | 7386 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7387 | } |
7388 | if (!type) | |
7389 | { | |
7390 | if (type_die) | |
7391 | dump_die (type_die); | |
8a3fe4f8 | 7392 | error (_("Dwarf Error: Problem turning containing type into gdb type [in module %s]"), |
e7c27a73 | 7393 | cu->objfile->name); |
c906108c SS |
7394 | } |
7395 | return type; | |
7396 | } | |
7397 | ||
c906108c | 7398 | static struct type * |
e7c27a73 | 7399 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7400 | { |
7401 | if (die->type) | |
7402 | { | |
7403 | return die->type; | |
7404 | } | |
7405 | else | |
7406 | { | |
e7c27a73 | 7407 | read_type_die (die, cu); |
c906108c SS |
7408 | if (!die->type) |
7409 | { | |
7410 | dump_die (die); | |
8a3fe4f8 | 7411 | error (_("Dwarf Error: Cannot find type of die [in module %s]"), |
e7c27a73 | 7412 | cu->objfile->name); |
c906108c SS |
7413 | } |
7414 | return die->type; | |
7415 | } | |
7416 | } | |
7417 | ||
7418 | static void | |
e7c27a73 | 7419 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7420 | { |
e142c38c | 7421 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
7422 | const char *old_prefix = processing_current_prefix; |
7423 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
7424 | processing_current_prefix = prefix; | |
7425 | ||
c906108c SS |
7426 | switch (die->tag) |
7427 | { | |
7428 | case DW_TAG_class_type: | |
7429 | case DW_TAG_structure_type: | |
7430 | case DW_TAG_union_type: | |
134d01f1 | 7431 | read_structure_type (die, cu); |
c906108c SS |
7432 | break; |
7433 | case DW_TAG_enumeration_type: | |
134d01f1 | 7434 | read_enumeration_type (die, cu); |
c906108c SS |
7435 | break; |
7436 | case DW_TAG_subprogram: | |
7437 | case DW_TAG_subroutine_type: | |
e7c27a73 | 7438 | read_subroutine_type (die, cu); |
c906108c SS |
7439 | break; |
7440 | case DW_TAG_array_type: | |
e7c27a73 | 7441 | read_array_type (die, cu); |
c906108c | 7442 | break; |
72019c9c GM |
7443 | case DW_TAG_set_type: |
7444 | read_set_type (die, cu); | |
7445 | break; | |
c906108c | 7446 | case DW_TAG_pointer_type: |
e7c27a73 | 7447 | read_tag_pointer_type (die, cu); |
c906108c SS |
7448 | break; |
7449 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 7450 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
7451 | break; |
7452 | case DW_TAG_reference_type: | |
e7c27a73 | 7453 | read_tag_reference_type (die, cu); |
c906108c SS |
7454 | break; |
7455 | case DW_TAG_const_type: | |
e7c27a73 | 7456 | read_tag_const_type (die, cu); |
c906108c SS |
7457 | break; |
7458 | case DW_TAG_volatile_type: | |
e7c27a73 | 7459 | read_tag_volatile_type (die, cu); |
c906108c SS |
7460 | break; |
7461 | case DW_TAG_string_type: | |
e7c27a73 | 7462 | read_tag_string_type (die, cu); |
c906108c SS |
7463 | break; |
7464 | case DW_TAG_typedef: | |
e7c27a73 | 7465 | read_typedef (die, cu); |
c906108c | 7466 | break; |
a02abb62 JB |
7467 | case DW_TAG_subrange_type: |
7468 | read_subrange_type (die, cu); | |
7469 | break; | |
c906108c | 7470 | case DW_TAG_base_type: |
e7c27a73 | 7471 | read_base_type (die, cu); |
c906108c | 7472 | break; |
81a17f79 JB |
7473 | case DW_TAG_unspecified_type: |
7474 | read_unspecified_type (die, cu); | |
7475 | break; | |
c906108c | 7476 | default: |
a1f5b845 | 7477 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 7478 | dwarf_tag_name (die->tag)); |
c906108c SS |
7479 | break; |
7480 | } | |
63d06c5c DC |
7481 | |
7482 | processing_current_prefix = old_prefix; | |
7483 | do_cleanups (back_to); | |
7484 | } | |
7485 | ||
fdde2d81 DC |
7486 | /* Return the name of the namespace/class that DIE is defined within, |
7487 | or "" if we can't tell. The caller should xfree the result. */ | |
7488 | ||
7489 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
7490 | therein) for an example of how to use this function to deal with | |
7491 | DW_AT_specification. */ | |
7492 | ||
7493 | static char * | |
e142c38c | 7494 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
7495 | { |
7496 | struct die_info *parent; | |
7497 | ||
987504bb JJ |
7498 | if (cu->language != language_cplus |
7499 | && cu->language != language_java) | |
63d06c5c DC |
7500 | return NULL; |
7501 | ||
7502 | parent = die->parent; | |
7503 | ||
7504 | if (parent == NULL) | |
7505 | { | |
8176b9b8 | 7506 | return xstrdup (""); |
63d06c5c DC |
7507 | } |
7508 | else | |
7509 | { | |
63d06c5c DC |
7510 | switch (parent->tag) { |
7511 | case DW_TAG_namespace: | |
7512 | { | |
8176b9b8 DC |
7513 | /* FIXME: carlton/2004-03-05: Should I follow extension dies |
7514 | before doing this check? */ | |
7515 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) | |
7516 | { | |
7517 | return xstrdup (TYPE_TAG_NAME (parent->type)); | |
7518 | } | |
7519 | else | |
7520 | { | |
7521 | int dummy; | |
7522 | char *parent_prefix = determine_prefix (parent, cu); | |
987504bb | 7523 | char *retval = typename_concat (NULL, parent_prefix, |
8176b9b8 | 7524 | namespace_name (parent, &dummy, |
987504bb JJ |
7525 | cu), |
7526 | cu); | |
8176b9b8 DC |
7527 | xfree (parent_prefix); |
7528 | return retval; | |
7529 | } | |
63d06c5c DC |
7530 | } |
7531 | break; | |
7532 | case DW_TAG_class_type: | |
7533 | case DW_TAG_structure_type: | |
7534 | { | |
8176b9b8 | 7535 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) |
63d06c5c | 7536 | { |
8176b9b8 | 7537 | return xstrdup (TYPE_TAG_NAME (parent->type)); |
63d06c5c DC |
7538 | } |
7539 | else | |
8176b9b8 DC |
7540 | { |
7541 | const char *old_prefix = processing_current_prefix; | |
7542 | char *new_prefix = determine_prefix (parent, cu); | |
7543 | char *retval; | |
7544 | ||
7545 | processing_current_prefix = new_prefix; | |
7546 | retval = determine_class_name (parent, cu); | |
7547 | processing_current_prefix = old_prefix; | |
7548 | ||
7549 | xfree (new_prefix); | |
7550 | return retval; | |
7551 | } | |
63d06c5c | 7552 | } |
63d06c5c | 7553 | default: |
8176b9b8 | 7554 | return determine_prefix (parent, cu); |
63d06c5c | 7555 | } |
63d06c5c DC |
7556 | } |
7557 | } | |
7558 | ||
987504bb JJ |
7559 | /* Return a newly-allocated string formed by concatenating PREFIX and |
7560 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
7561 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
7562 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
7563 | is used to determine the language and hence, the appropriate separator. */ | |
7564 | ||
7565 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
7566 | |
7567 | static char * | |
987504bb JJ |
7568 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
7569 | struct dwarf2_cu *cu) | |
63d06c5c | 7570 | { |
987504bb | 7571 | char *sep; |
63d06c5c | 7572 | |
987504bb JJ |
7573 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
7574 | sep = ""; | |
7575 | else if (cu->language == language_java) | |
7576 | sep = "."; | |
7577 | else | |
7578 | sep = "::"; | |
63d06c5c | 7579 | |
987504bb JJ |
7580 | if (obs == NULL) |
7581 | { | |
7582 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
7583 | retval[0] = '\0'; | |
7584 | ||
7585 | if (prefix) | |
7586 | { | |
7587 | strcpy (retval, prefix); | |
7588 | strcat (retval, sep); | |
7589 | } | |
7590 | if (suffix) | |
7591 | strcat (retval, suffix); | |
7592 | ||
63d06c5c DC |
7593 | return retval; |
7594 | } | |
987504bb JJ |
7595 | else |
7596 | { | |
7597 | /* We have an obstack. */ | |
7598 | return obconcat (obs, prefix, sep, suffix); | |
7599 | } | |
63d06c5c DC |
7600 | } |
7601 | ||
c906108c | 7602 | static struct type * |
e7c27a73 | 7603 | dwarf_base_type (int encoding, int size, struct dwarf2_cu *cu) |
c906108c | 7604 | { |
e7c27a73 DJ |
7605 | struct objfile *objfile = cu->objfile; |
7606 | ||
c906108c SS |
7607 | /* FIXME - this should not produce a new (struct type *) |
7608 | every time. It should cache base types. */ | |
7609 | struct type *type; | |
7610 | switch (encoding) | |
7611 | { | |
7612 | case DW_ATE_address: | |
e142c38c | 7613 | type = dwarf2_fundamental_type (objfile, FT_VOID, cu); |
c906108c SS |
7614 | return type; |
7615 | case DW_ATE_boolean: | |
e142c38c | 7616 | type = dwarf2_fundamental_type (objfile, FT_BOOLEAN, cu); |
c906108c SS |
7617 | return type; |
7618 | case DW_ATE_complex_float: | |
7619 | if (size == 16) | |
7620 | { | |
e142c38c | 7621 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_COMPLEX, cu); |
c906108c SS |
7622 | } |
7623 | else | |
7624 | { | |
e142c38c | 7625 | type = dwarf2_fundamental_type (objfile, FT_COMPLEX, cu); |
c906108c SS |
7626 | } |
7627 | return type; | |
7628 | case DW_ATE_float: | |
7629 | if (size == 8) | |
7630 | { | |
e142c38c | 7631 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
c906108c SS |
7632 | } |
7633 | else | |
7634 | { | |
e142c38c | 7635 | type = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
c906108c SS |
7636 | } |
7637 | return type; | |
7638 | case DW_ATE_signed: | |
7639 | switch (size) | |
7640 | { | |
7641 | case 1: | |
e142c38c | 7642 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
7643 | break; |
7644 | case 2: | |
e142c38c | 7645 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_SHORT, cu); |
c906108c SS |
7646 | break; |
7647 | default: | |
7648 | case 4: | |
e142c38c | 7649 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
7650 | break; |
7651 | } | |
7652 | return type; | |
7653 | case DW_ATE_signed_char: | |
e142c38c | 7654 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
7655 | return type; |
7656 | case DW_ATE_unsigned: | |
7657 | switch (size) | |
7658 | { | |
7659 | case 1: | |
e142c38c | 7660 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
7661 | break; |
7662 | case 2: | |
e142c38c | 7663 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_SHORT, cu); |
c906108c SS |
7664 | break; |
7665 | default: | |
7666 | case 4: | |
e142c38c | 7667 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_INTEGER, cu); |
c906108c SS |
7668 | break; |
7669 | } | |
7670 | return type; | |
7671 | case DW_ATE_unsigned_char: | |
e142c38c | 7672 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
7673 | return type; |
7674 | default: | |
e142c38c | 7675 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
7676 | return type; |
7677 | } | |
7678 | } | |
7679 | ||
7680 | #if 0 | |
7681 | struct die_info * | |
fba45db2 | 7682 | copy_die (struct die_info *old_die) |
c906108c SS |
7683 | { |
7684 | struct die_info *new_die; | |
7685 | int i, num_attrs; | |
7686 | ||
7687 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
7688 | memset (new_die, 0, sizeof (struct die_info)); | |
7689 | ||
7690 | new_die->tag = old_die->tag; | |
7691 | new_die->has_children = old_die->has_children; | |
7692 | new_die->abbrev = old_die->abbrev; | |
7693 | new_die->offset = old_die->offset; | |
7694 | new_die->type = NULL; | |
7695 | ||
7696 | num_attrs = old_die->num_attrs; | |
7697 | new_die->num_attrs = num_attrs; | |
7698 | new_die->attrs = (struct attribute *) | |
7699 | xmalloc (num_attrs * sizeof (struct attribute)); | |
7700 | ||
7701 | for (i = 0; i < old_die->num_attrs; ++i) | |
7702 | { | |
7703 | new_die->attrs[i].name = old_die->attrs[i].name; | |
7704 | new_die->attrs[i].form = old_die->attrs[i].form; | |
7705 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
7706 | } | |
7707 | ||
7708 | new_die->next = NULL; | |
7709 | return new_die; | |
7710 | } | |
7711 | #endif | |
7712 | ||
7713 | /* Return sibling of die, NULL if no sibling. */ | |
7714 | ||
f9aca02d | 7715 | static struct die_info * |
fba45db2 | 7716 | sibling_die (struct die_info *die) |
c906108c | 7717 | { |
639d11d3 | 7718 | return die->sibling; |
c906108c SS |
7719 | } |
7720 | ||
7721 | /* Get linkage name of a die, return NULL if not found. */ | |
7722 | ||
7723 | static char * | |
e142c38c | 7724 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7725 | { |
7726 | struct attribute *attr; | |
7727 | ||
e142c38c | 7728 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
7729 | if (attr && DW_STRING (attr)) |
7730 | return DW_STRING (attr); | |
e142c38c | 7731 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
7732 | if (attr && DW_STRING (attr)) |
7733 | return DW_STRING (attr); | |
7734 | return NULL; | |
7735 | } | |
7736 | ||
9219021c DC |
7737 | /* Get name of a die, return NULL if not found. */ |
7738 | ||
7739 | static char * | |
e142c38c | 7740 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7741 | { |
7742 | struct attribute *attr; | |
7743 | ||
e142c38c | 7744 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
7745 | if (attr && DW_STRING (attr)) |
7746 | return DW_STRING (attr); | |
7747 | return NULL; | |
7748 | } | |
7749 | ||
7750 | /* Return the die that this die in an extension of, or NULL if there | |
7751 | is none. */ | |
7752 | ||
7753 | static struct die_info * | |
e142c38c | 7754 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7755 | { |
7756 | struct attribute *attr; | |
9219021c | 7757 | |
e142c38c | 7758 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
7759 | if (attr == NULL) |
7760 | return NULL; | |
7761 | ||
10b3939b | 7762 | return follow_die_ref (die, attr, cu); |
9219021c DC |
7763 | } |
7764 | ||
c906108c SS |
7765 | /* Convert a DIE tag into its string name. */ |
7766 | ||
7767 | static char * | |
aa1ee363 | 7768 | dwarf_tag_name (unsigned tag) |
c906108c SS |
7769 | { |
7770 | switch (tag) | |
7771 | { | |
7772 | case DW_TAG_padding: | |
7773 | return "DW_TAG_padding"; | |
7774 | case DW_TAG_array_type: | |
7775 | return "DW_TAG_array_type"; | |
7776 | case DW_TAG_class_type: | |
7777 | return "DW_TAG_class_type"; | |
7778 | case DW_TAG_entry_point: | |
7779 | return "DW_TAG_entry_point"; | |
7780 | case DW_TAG_enumeration_type: | |
7781 | return "DW_TAG_enumeration_type"; | |
7782 | case DW_TAG_formal_parameter: | |
7783 | return "DW_TAG_formal_parameter"; | |
7784 | case DW_TAG_imported_declaration: | |
7785 | return "DW_TAG_imported_declaration"; | |
7786 | case DW_TAG_label: | |
7787 | return "DW_TAG_label"; | |
7788 | case DW_TAG_lexical_block: | |
7789 | return "DW_TAG_lexical_block"; | |
7790 | case DW_TAG_member: | |
7791 | return "DW_TAG_member"; | |
7792 | case DW_TAG_pointer_type: | |
7793 | return "DW_TAG_pointer_type"; | |
7794 | case DW_TAG_reference_type: | |
7795 | return "DW_TAG_reference_type"; | |
7796 | case DW_TAG_compile_unit: | |
7797 | return "DW_TAG_compile_unit"; | |
7798 | case DW_TAG_string_type: | |
7799 | return "DW_TAG_string_type"; | |
7800 | case DW_TAG_structure_type: | |
7801 | return "DW_TAG_structure_type"; | |
7802 | case DW_TAG_subroutine_type: | |
7803 | return "DW_TAG_subroutine_type"; | |
7804 | case DW_TAG_typedef: | |
7805 | return "DW_TAG_typedef"; | |
7806 | case DW_TAG_union_type: | |
7807 | return "DW_TAG_union_type"; | |
7808 | case DW_TAG_unspecified_parameters: | |
7809 | return "DW_TAG_unspecified_parameters"; | |
7810 | case DW_TAG_variant: | |
7811 | return "DW_TAG_variant"; | |
7812 | case DW_TAG_common_block: | |
7813 | return "DW_TAG_common_block"; | |
7814 | case DW_TAG_common_inclusion: | |
7815 | return "DW_TAG_common_inclusion"; | |
7816 | case DW_TAG_inheritance: | |
7817 | return "DW_TAG_inheritance"; | |
7818 | case DW_TAG_inlined_subroutine: | |
7819 | return "DW_TAG_inlined_subroutine"; | |
7820 | case DW_TAG_module: | |
7821 | return "DW_TAG_module"; | |
7822 | case DW_TAG_ptr_to_member_type: | |
7823 | return "DW_TAG_ptr_to_member_type"; | |
7824 | case DW_TAG_set_type: | |
7825 | return "DW_TAG_set_type"; | |
7826 | case DW_TAG_subrange_type: | |
7827 | return "DW_TAG_subrange_type"; | |
7828 | case DW_TAG_with_stmt: | |
7829 | return "DW_TAG_with_stmt"; | |
7830 | case DW_TAG_access_declaration: | |
7831 | return "DW_TAG_access_declaration"; | |
7832 | case DW_TAG_base_type: | |
7833 | return "DW_TAG_base_type"; | |
7834 | case DW_TAG_catch_block: | |
7835 | return "DW_TAG_catch_block"; | |
7836 | case DW_TAG_const_type: | |
7837 | return "DW_TAG_const_type"; | |
7838 | case DW_TAG_constant: | |
7839 | return "DW_TAG_constant"; | |
7840 | case DW_TAG_enumerator: | |
7841 | return "DW_TAG_enumerator"; | |
7842 | case DW_TAG_file_type: | |
7843 | return "DW_TAG_file_type"; | |
7844 | case DW_TAG_friend: | |
7845 | return "DW_TAG_friend"; | |
7846 | case DW_TAG_namelist: | |
7847 | return "DW_TAG_namelist"; | |
7848 | case DW_TAG_namelist_item: | |
7849 | return "DW_TAG_namelist_item"; | |
7850 | case DW_TAG_packed_type: | |
7851 | return "DW_TAG_packed_type"; | |
7852 | case DW_TAG_subprogram: | |
7853 | return "DW_TAG_subprogram"; | |
7854 | case DW_TAG_template_type_param: | |
7855 | return "DW_TAG_template_type_param"; | |
7856 | case DW_TAG_template_value_param: | |
7857 | return "DW_TAG_template_value_param"; | |
7858 | case DW_TAG_thrown_type: | |
7859 | return "DW_TAG_thrown_type"; | |
7860 | case DW_TAG_try_block: | |
7861 | return "DW_TAG_try_block"; | |
7862 | case DW_TAG_variant_part: | |
7863 | return "DW_TAG_variant_part"; | |
7864 | case DW_TAG_variable: | |
7865 | return "DW_TAG_variable"; | |
7866 | case DW_TAG_volatile_type: | |
7867 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
7868 | case DW_TAG_dwarf_procedure: |
7869 | return "DW_TAG_dwarf_procedure"; | |
7870 | case DW_TAG_restrict_type: | |
7871 | return "DW_TAG_restrict_type"; | |
7872 | case DW_TAG_interface_type: | |
7873 | return "DW_TAG_interface_type"; | |
7874 | case DW_TAG_namespace: | |
7875 | return "DW_TAG_namespace"; | |
7876 | case DW_TAG_imported_module: | |
7877 | return "DW_TAG_imported_module"; | |
7878 | case DW_TAG_unspecified_type: | |
7879 | return "DW_TAG_unspecified_type"; | |
7880 | case DW_TAG_partial_unit: | |
7881 | return "DW_TAG_partial_unit"; | |
7882 | case DW_TAG_imported_unit: | |
7883 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
7884 | case DW_TAG_condition: |
7885 | return "DW_TAG_condition"; | |
7886 | case DW_TAG_shared_type: | |
7887 | return "DW_TAG_shared_type"; | |
c906108c SS |
7888 | case DW_TAG_MIPS_loop: |
7889 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
7890 | case DW_TAG_HP_array_descriptor: |
7891 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
7892 | case DW_TAG_format_label: |
7893 | return "DW_TAG_format_label"; | |
7894 | case DW_TAG_function_template: | |
7895 | return "DW_TAG_function_template"; | |
7896 | case DW_TAG_class_template: | |
7897 | return "DW_TAG_class_template"; | |
b7619582 GF |
7898 | case DW_TAG_GNU_BINCL: |
7899 | return "DW_TAG_GNU_BINCL"; | |
7900 | case DW_TAG_GNU_EINCL: | |
7901 | return "DW_TAG_GNU_EINCL"; | |
7902 | case DW_TAG_upc_shared_type: | |
7903 | return "DW_TAG_upc_shared_type"; | |
7904 | case DW_TAG_upc_strict_type: | |
7905 | return "DW_TAG_upc_strict_type"; | |
7906 | case DW_TAG_upc_relaxed_type: | |
7907 | return "DW_TAG_upc_relaxed_type"; | |
7908 | case DW_TAG_PGI_kanji_type: | |
7909 | return "DW_TAG_PGI_kanji_type"; | |
7910 | case DW_TAG_PGI_interface_block: | |
7911 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
7912 | default: |
7913 | return "DW_TAG_<unknown>"; | |
7914 | } | |
7915 | } | |
7916 | ||
7917 | /* Convert a DWARF attribute code into its string name. */ | |
7918 | ||
7919 | static char * | |
aa1ee363 | 7920 | dwarf_attr_name (unsigned attr) |
c906108c SS |
7921 | { |
7922 | switch (attr) | |
7923 | { | |
7924 | case DW_AT_sibling: | |
7925 | return "DW_AT_sibling"; | |
7926 | case DW_AT_location: | |
7927 | return "DW_AT_location"; | |
7928 | case DW_AT_name: | |
7929 | return "DW_AT_name"; | |
7930 | case DW_AT_ordering: | |
7931 | return "DW_AT_ordering"; | |
7932 | case DW_AT_subscr_data: | |
7933 | return "DW_AT_subscr_data"; | |
7934 | case DW_AT_byte_size: | |
7935 | return "DW_AT_byte_size"; | |
7936 | case DW_AT_bit_offset: | |
7937 | return "DW_AT_bit_offset"; | |
7938 | case DW_AT_bit_size: | |
7939 | return "DW_AT_bit_size"; | |
7940 | case DW_AT_element_list: | |
7941 | return "DW_AT_element_list"; | |
7942 | case DW_AT_stmt_list: | |
7943 | return "DW_AT_stmt_list"; | |
7944 | case DW_AT_low_pc: | |
7945 | return "DW_AT_low_pc"; | |
7946 | case DW_AT_high_pc: | |
7947 | return "DW_AT_high_pc"; | |
7948 | case DW_AT_language: | |
7949 | return "DW_AT_language"; | |
7950 | case DW_AT_member: | |
7951 | return "DW_AT_member"; | |
7952 | case DW_AT_discr: | |
7953 | return "DW_AT_discr"; | |
7954 | case DW_AT_discr_value: | |
7955 | return "DW_AT_discr_value"; | |
7956 | case DW_AT_visibility: | |
7957 | return "DW_AT_visibility"; | |
7958 | case DW_AT_import: | |
7959 | return "DW_AT_import"; | |
7960 | case DW_AT_string_length: | |
7961 | return "DW_AT_string_length"; | |
7962 | case DW_AT_common_reference: | |
7963 | return "DW_AT_common_reference"; | |
7964 | case DW_AT_comp_dir: | |
7965 | return "DW_AT_comp_dir"; | |
7966 | case DW_AT_const_value: | |
7967 | return "DW_AT_const_value"; | |
7968 | case DW_AT_containing_type: | |
7969 | return "DW_AT_containing_type"; | |
7970 | case DW_AT_default_value: | |
7971 | return "DW_AT_default_value"; | |
7972 | case DW_AT_inline: | |
7973 | return "DW_AT_inline"; | |
7974 | case DW_AT_is_optional: | |
7975 | return "DW_AT_is_optional"; | |
7976 | case DW_AT_lower_bound: | |
7977 | return "DW_AT_lower_bound"; | |
7978 | case DW_AT_producer: | |
7979 | return "DW_AT_producer"; | |
7980 | case DW_AT_prototyped: | |
7981 | return "DW_AT_prototyped"; | |
7982 | case DW_AT_return_addr: | |
7983 | return "DW_AT_return_addr"; | |
7984 | case DW_AT_start_scope: | |
7985 | return "DW_AT_start_scope"; | |
7986 | case DW_AT_stride_size: | |
7987 | return "DW_AT_stride_size"; | |
7988 | case DW_AT_upper_bound: | |
7989 | return "DW_AT_upper_bound"; | |
7990 | case DW_AT_abstract_origin: | |
7991 | return "DW_AT_abstract_origin"; | |
7992 | case DW_AT_accessibility: | |
7993 | return "DW_AT_accessibility"; | |
7994 | case DW_AT_address_class: | |
7995 | return "DW_AT_address_class"; | |
7996 | case DW_AT_artificial: | |
7997 | return "DW_AT_artificial"; | |
7998 | case DW_AT_base_types: | |
7999 | return "DW_AT_base_types"; | |
8000 | case DW_AT_calling_convention: | |
8001 | return "DW_AT_calling_convention"; | |
8002 | case DW_AT_count: | |
8003 | return "DW_AT_count"; | |
8004 | case DW_AT_data_member_location: | |
8005 | return "DW_AT_data_member_location"; | |
8006 | case DW_AT_decl_column: | |
8007 | return "DW_AT_decl_column"; | |
8008 | case DW_AT_decl_file: | |
8009 | return "DW_AT_decl_file"; | |
8010 | case DW_AT_decl_line: | |
8011 | return "DW_AT_decl_line"; | |
8012 | case DW_AT_declaration: | |
8013 | return "DW_AT_declaration"; | |
8014 | case DW_AT_discr_list: | |
8015 | return "DW_AT_discr_list"; | |
8016 | case DW_AT_encoding: | |
8017 | return "DW_AT_encoding"; | |
8018 | case DW_AT_external: | |
8019 | return "DW_AT_external"; | |
8020 | case DW_AT_frame_base: | |
8021 | return "DW_AT_frame_base"; | |
8022 | case DW_AT_friend: | |
8023 | return "DW_AT_friend"; | |
8024 | case DW_AT_identifier_case: | |
8025 | return "DW_AT_identifier_case"; | |
8026 | case DW_AT_macro_info: | |
8027 | return "DW_AT_macro_info"; | |
8028 | case DW_AT_namelist_items: | |
8029 | return "DW_AT_namelist_items"; | |
8030 | case DW_AT_priority: | |
8031 | return "DW_AT_priority"; | |
8032 | case DW_AT_segment: | |
8033 | return "DW_AT_segment"; | |
8034 | case DW_AT_specification: | |
8035 | return "DW_AT_specification"; | |
8036 | case DW_AT_static_link: | |
8037 | return "DW_AT_static_link"; | |
8038 | case DW_AT_type: | |
8039 | return "DW_AT_type"; | |
8040 | case DW_AT_use_location: | |
8041 | return "DW_AT_use_location"; | |
8042 | case DW_AT_variable_parameter: | |
8043 | return "DW_AT_variable_parameter"; | |
8044 | case DW_AT_virtuality: | |
8045 | return "DW_AT_virtuality"; | |
8046 | case DW_AT_vtable_elem_location: | |
8047 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 8048 | /* DWARF 3 values. */ |
d9fa45fe DC |
8049 | case DW_AT_allocated: |
8050 | return "DW_AT_allocated"; | |
8051 | case DW_AT_associated: | |
8052 | return "DW_AT_associated"; | |
8053 | case DW_AT_data_location: | |
8054 | return "DW_AT_data_location"; | |
8055 | case DW_AT_stride: | |
8056 | return "DW_AT_stride"; | |
8057 | case DW_AT_entry_pc: | |
8058 | return "DW_AT_entry_pc"; | |
8059 | case DW_AT_use_UTF8: | |
8060 | return "DW_AT_use_UTF8"; | |
8061 | case DW_AT_extension: | |
8062 | return "DW_AT_extension"; | |
8063 | case DW_AT_ranges: | |
8064 | return "DW_AT_ranges"; | |
8065 | case DW_AT_trampoline: | |
8066 | return "DW_AT_trampoline"; | |
8067 | case DW_AT_call_column: | |
8068 | return "DW_AT_call_column"; | |
8069 | case DW_AT_call_file: | |
8070 | return "DW_AT_call_file"; | |
8071 | case DW_AT_call_line: | |
8072 | return "DW_AT_call_line"; | |
b7619582 GF |
8073 | case DW_AT_description: |
8074 | return "DW_AT_description"; | |
8075 | case DW_AT_binary_scale: | |
8076 | return "DW_AT_binary_scale"; | |
8077 | case DW_AT_decimal_scale: | |
8078 | return "DW_AT_decimal_scale"; | |
8079 | case DW_AT_small: | |
8080 | return "DW_AT_small"; | |
8081 | case DW_AT_decimal_sign: | |
8082 | return "DW_AT_decimal_sign"; | |
8083 | case DW_AT_digit_count: | |
8084 | return "DW_AT_digit_count"; | |
8085 | case DW_AT_picture_string: | |
8086 | return "DW_AT_picture_string"; | |
8087 | case DW_AT_mutable: | |
8088 | return "DW_AT_mutable"; | |
8089 | case DW_AT_threads_scaled: | |
8090 | return "DW_AT_threads_scaled"; | |
8091 | case DW_AT_explicit: | |
8092 | return "DW_AT_explicit"; | |
8093 | case DW_AT_object_pointer: | |
8094 | return "DW_AT_object_pointer"; | |
8095 | case DW_AT_endianity: | |
8096 | return "DW_AT_endianity"; | |
8097 | case DW_AT_elemental: | |
8098 | return "DW_AT_elemental"; | |
8099 | case DW_AT_pure: | |
8100 | return "DW_AT_pure"; | |
8101 | case DW_AT_recursive: | |
8102 | return "DW_AT_recursive"; | |
c906108c | 8103 | #ifdef MIPS |
b7619582 | 8104 | /* SGI/MIPS extensions. */ |
c906108c SS |
8105 | case DW_AT_MIPS_fde: |
8106 | return "DW_AT_MIPS_fde"; | |
8107 | case DW_AT_MIPS_loop_begin: | |
8108 | return "DW_AT_MIPS_loop_begin"; | |
8109 | case DW_AT_MIPS_tail_loop_begin: | |
8110 | return "DW_AT_MIPS_tail_loop_begin"; | |
8111 | case DW_AT_MIPS_epilog_begin: | |
8112 | return "DW_AT_MIPS_epilog_begin"; | |
8113 | case DW_AT_MIPS_loop_unroll_factor: | |
8114 | return "DW_AT_MIPS_loop_unroll_factor"; | |
8115 | case DW_AT_MIPS_software_pipeline_depth: | |
8116 | return "DW_AT_MIPS_software_pipeline_depth"; | |
8117 | case DW_AT_MIPS_linkage_name: | |
8118 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
8119 | case DW_AT_MIPS_stride: |
8120 | return "DW_AT_MIPS_stride"; | |
8121 | case DW_AT_MIPS_abstract_name: | |
8122 | return "DW_AT_MIPS_abstract_name"; | |
8123 | case DW_AT_MIPS_clone_origin: | |
8124 | return "DW_AT_MIPS_clone_origin"; | |
8125 | case DW_AT_MIPS_has_inlines: | |
8126 | return "DW_AT_MIPS_has_inlines"; | |
8127 | #endif | |
8128 | /* HP extensions. */ | |
8129 | case DW_AT_HP_block_index: | |
8130 | return "DW_AT_HP_block_index"; | |
8131 | case DW_AT_HP_unmodifiable: | |
8132 | return "DW_AT_HP_unmodifiable"; | |
8133 | case DW_AT_HP_actuals_stmt_list: | |
8134 | return "DW_AT_HP_actuals_stmt_list"; | |
8135 | case DW_AT_HP_proc_per_section: | |
8136 | return "DW_AT_HP_proc_per_section"; | |
8137 | case DW_AT_HP_raw_data_ptr: | |
8138 | return "DW_AT_HP_raw_data_ptr"; | |
8139 | case DW_AT_HP_pass_by_reference: | |
8140 | return "DW_AT_HP_pass_by_reference"; | |
8141 | case DW_AT_HP_opt_level: | |
8142 | return "DW_AT_HP_opt_level"; | |
8143 | case DW_AT_HP_prof_version_id: | |
8144 | return "DW_AT_HP_prof_version_id"; | |
8145 | case DW_AT_HP_opt_flags: | |
8146 | return "DW_AT_HP_opt_flags"; | |
8147 | case DW_AT_HP_cold_region_low_pc: | |
8148 | return "DW_AT_HP_cold_region_low_pc"; | |
8149 | case DW_AT_HP_cold_region_high_pc: | |
8150 | return "DW_AT_HP_cold_region_high_pc"; | |
8151 | case DW_AT_HP_all_variables_modifiable: | |
8152 | return "DW_AT_HP_all_variables_modifiable"; | |
8153 | case DW_AT_HP_linkage_name: | |
8154 | return "DW_AT_HP_linkage_name"; | |
8155 | case DW_AT_HP_prof_flags: | |
8156 | return "DW_AT_HP_prof_flags"; | |
8157 | /* GNU extensions. */ | |
c906108c SS |
8158 | case DW_AT_sf_names: |
8159 | return "DW_AT_sf_names"; | |
8160 | case DW_AT_src_info: | |
8161 | return "DW_AT_src_info"; | |
8162 | case DW_AT_mac_info: | |
8163 | return "DW_AT_mac_info"; | |
8164 | case DW_AT_src_coords: | |
8165 | return "DW_AT_src_coords"; | |
8166 | case DW_AT_body_begin: | |
8167 | return "DW_AT_body_begin"; | |
8168 | case DW_AT_body_end: | |
8169 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
8170 | case DW_AT_GNU_vector: |
8171 | return "DW_AT_GNU_vector"; | |
b7619582 GF |
8172 | /* VMS extensions. */ |
8173 | case DW_AT_VMS_rtnbeg_pd_address: | |
8174 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
8175 | /* UPC extension. */ | |
8176 | case DW_AT_upc_threads_scaled: | |
8177 | return "DW_AT_upc_threads_scaled"; | |
8178 | /* PGI (STMicroelectronics) extensions. */ | |
8179 | case DW_AT_PGI_lbase: | |
8180 | return "DW_AT_PGI_lbase"; | |
8181 | case DW_AT_PGI_soffset: | |
8182 | return "DW_AT_PGI_soffset"; | |
8183 | case DW_AT_PGI_lstride: | |
8184 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
8185 | default: |
8186 | return "DW_AT_<unknown>"; | |
8187 | } | |
8188 | } | |
8189 | ||
8190 | /* Convert a DWARF value form code into its string name. */ | |
8191 | ||
8192 | static char * | |
aa1ee363 | 8193 | dwarf_form_name (unsigned form) |
c906108c SS |
8194 | { |
8195 | switch (form) | |
8196 | { | |
8197 | case DW_FORM_addr: | |
8198 | return "DW_FORM_addr"; | |
8199 | case DW_FORM_block2: | |
8200 | return "DW_FORM_block2"; | |
8201 | case DW_FORM_block4: | |
8202 | return "DW_FORM_block4"; | |
8203 | case DW_FORM_data2: | |
8204 | return "DW_FORM_data2"; | |
8205 | case DW_FORM_data4: | |
8206 | return "DW_FORM_data4"; | |
8207 | case DW_FORM_data8: | |
8208 | return "DW_FORM_data8"; | |
8209 | case DW_FORM_string: | |
8210 | return "DW_FORM_string"; | |
8211 | case DW_FORM_block: | |
8212 | return "DW_FORM_block"; | |
8213 | case DW_FORM_block1: | |
8214 | return "DW_FORM_block1"; | |
8215 | case DW_FORM_data1: | |
8216 | return "DW_FORM_data1"; | |
8217 | case DW_FORM_flag: | |
8218 | return "DW_FORM_flag"; | |
8219 | case DW_FORM_sdata: | |
8220 | return "DW_FORM_sdata"; | |
8221 | case DW_FORM_strp: | |
8222 | return "DW_FORM_strp"; | |
8223 | case DW_FORM_udata: | |
8224 | return "DW_FORM_udata"; | |
8225 | case DW_FORM_ref_addr: | |
8226 | return "DW_FORM_ref_addr"; | |
8227 | case DW_FORM_ref1: | |
8228 | return "DW_FORM_ref1"; | |
8229 | case DW_FORM_ref2: | |
8230 | return "DW_FORM_ref2"; | |
8231 | case DW_FORM_ref4: | |
8232 | return "DW_FORM_ref4"; | |
8233 | case DW_FORM_ref8: | |
8234 | return "DW_FORM_ref8"; | |
8235 | case DW_FORM_ref_udata: | |
8236 | return "DW_FORM_ref_udata"; | |
8237 | case DW_FORM_indirect: | |
8238 | return "DW_FORM_indirect"; | |
8239 | default: | |
8240 | return "DW_FORM_<unknown>"; | |
8241 | } | |
8242 | } | |
8243 | ||
8244 | /* Convert a DWARF stack opcode into its string name. */ | |
8245 | ||
8246 | static char * | |
aa1ee363 | 8247 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
8248 | { |
8249 | switch (op) | |
8250 | { | |
8251 | case DW_OP_addr: | |
8252 | return "DW_OP_addr"; | |
8253 | case DW_OP_deref: | |
8254 | return "DW_OP_deref"; | |
8255 | case DW_OP_const1u: | |
8256 | return "DW_OP_const1u"; | |
8257 | case DW_OP_const1s: | |
8258 | return "DW_OP_const1s"; | |
8259 | case DW_OP_const2u: | |
8260 | return "DW_OP_const2u"; | |
8261 | case DW_OP_const2s: | |
8262 | return "DW_OP_const2s"; | |
8263 | case DW_OP_const4u: | |
8264 | return "DW_OP_const4u"; | |
8265 | case DW_OP_const4s: | |
8266 | return "DW_OP_const4s"; | |
8267 | case DW_OP_const8u: | |
8268 | return "DW_OP_const8u"; | |
8269 | case DW_OP_const8s: | |
8270 | return "DW_OP_const8s"; | |
8271 | case DW_OP_constu: | |
8272 | return "DW_OP_constu"; | |
8273 | case DW_OP_consts: | |
8274 | return "DW_OP_consts"; | |
8275 | case DW_OP_dup: | |
8276 | return "DW_OP_dup"; | |
8277 | case DW_OP_drop: | |
8278 | return "DW_OP_drop"; | |
8279 | case DW_OP_over: | |
8280 | return "DW_OP_over"; | |
8281 | case DW_OP_pick: | |
8282 | return "DW_OP_pick"; | |
8283 | case DW_OP_swap: | |
8284 | return "DW_OP_swap"; | |
8285 | case DW_OP_rot: | |
8286 | return "DW_OP_rot"; | |
8287 | case DW_OP_xderef: | |
8288 | return "DW_OP_xderef"; | |
8289 | case DW_OP_abs: | |
8290 | return "DW_OP_abs"; | |
8291 | case DW_OP_and: | |
8292 | return "DW_OP_and"; | |
8293 | case DW_OP_div: | |
8294 | return "DW_OP_div"; | |
8295 | case DW_OP_minus: | |
8296 | return "DW_OP_minus"; | |
8297 | case DW_OP_mod: | |
8298 | return "DW_OP_mod"; | |
8299 | case DW_OP_mul: | |
8300 | return "DW_OP_mul"; | |
8301 | case DW_OP_neg: | |
8302 | return "DW_OP_neg"; | |
8303 | case DW_OP_not: | |
8304 | return "DW_OP_not"; | |
8305 | case DW_OP_or: | |
8306 | return "DW_OP_or"; | |
8307 | case DW_OP_plus: | |
8308 | return "DW_OP_plus"; | |
8309 | case DW_OP_plus_uconst: | |
8310 | return "DW_OP_plus_uconst"; | |
8311 | case DW_OP_shl: | |
8312 | return "DW_OP_shl"; | |
8313 | case DW_OP_shr: | |
8314 | return "DW_OP_shr"; | |
8315 | case DW_OP_shra: | |
8316 | return "DW_OP_shra"; | |
8317 | case DW_OP_xor: | |
8318 | return "DW_OP_xor"; | |
8319 | case DW_OP_bra: | |
8320 | return "DW_OP_bra"; | |
8321 | case DW_OP_eq: | |
8322 | return "DW_OP_eq"; | |
8323 | case DW_OP_ge: | |
8324 | return "DW_OP_ge"; | |
8325 | case DW_OP_gt: | |
8326 | return "DW_OP_gt"; | |
8327 | case DW_OP_le: | |
8328 | return "DW_OP_le"; | |
8329 | case DW_OP_lt: | |
8330 | return "DW_OP_lt"; | |
8331 | case DW_OP_ne: | |
8332 | return "DW_OP_ne"; | |
8333 | case DW_OP_skip: | |
8334 | return "DW_OP_skip"; | |
8335 | case DW_OP_lit0: | |
8336 | return "DW_OP_lit0"; | |
8337 | case DW_OP_lit1: | |
8338 | return "DW_OP_lit1"; | |
8339 | case DW_OP_lit2: | |
8340 | return "DW_OP_lit2"; | |
8341 | case DW_OP_lit3: | |
8342 | return "DW_OP_lit3"; | |
8343 | case DW_OP_lit4: | |
8344 | return "DW_OP_lit4"; | |
8345 | case DW_OP_lit5: | |
8346 | return "DW_OP_lit5"; | |
8347 | case DW_OP_lit6: | |
8348 | return "DW_OP_lit6"; | |
8349 | case DW_OP_lit7: | |
8350 | return "DW_OP_lit7"; | |
8351 | case DW_OP_lit8: | |
8352 | return "DW_OP_lit8"; | |
8353 | case DW_OP_lit9: | |
8354 | return "DW_OP_lit9"; | |
8355 | case DW_OP_lit10: | |
8356 | return "DW_OP_lit10"; | |
8357 | case DW_OP_lit11: | |
8358 | return "DW_OP_lit11"; | |
8359 | case DW_OP_lit12: | |
8360 | return "DW_OP_lit12"; | |
8361 | case DW_OP_lit13: | |
8362 | return "DW_OP_lit13"; | |
8363 | case DW_OP_lit14: | |
8364 | return "DW_OP_lit14"; | |
8365 | case DW_OP_lit15: | |
8366 | return "DW_OP_lit15"; | |
8367 | case DW_OP_lit16: | |
8368 | return "DW_OP_lit16"; | |
8369 | case DW_OP_lit17: | |
8370 | return "DW_OP_lit17"; | |
8371 | case DW_OP_lit18: | |
8372 | return "DW_OP_lit18"; | |
8373 | case DW_OP_lit19: | |
8374 | return "DW_OP_lit19"; | |
8375 | case DW_OP_lit20: | |
8376 | return "DW_OP_lit20"; | |
8377 | case DW_OP_lit21: | |
8378 | return "DW_OP_lit21"; | |
8379 | case DW_OP_lit22: | |
8380 | return "DW_OP_lit22"; | |
8381 | case DW_OP_lit23: | |
8382 | return "DW_OP_lit23"; | |
8383 | case DW_OP_lit24: | |
8384 | return "DW_OP_lit24"; | |
8385 | case DW_OP_lit25: | |
8386 | return "DW_OP_lit25"; | |
8387 | case DW_OP_lit26: | |
8388 | return "DW_OP_lit26"; | |
8389 | case DW_OP_lit27: | |
8390 | return "DW_OP_lit27"; | |
8391 | case DW_OP_lit28: | |
8392 | return "DW_OP_lit28"; | |
8393 | case DW_OP_lit29: | |
8394 | return "DW_OP_lit29"; | |
8395 | case DW_OP_lit30: | |
8396 | return "DW_OP_lit30"; | |
8397 | case DW_OP_lit31: | |
8398 | return "DW_OP_lit31"; | |
8399 | case DW_OP_reg0: | |
8400 | return "DW_OP_reg0"; | |
8401 | case DW_OP_reg1: | |
8402 | return "DW_OP_reg1"; | |
8403 | case DW_OP_reg2: | |
8404 | return "DW_OP_reg2"; | |
8405 | case DW_OP_reg3: | |
8406 | return "DW_OP_reg3"; | |
8407 | case DW_OP_reg4: | |
8408 | return "DW_OP_reg4"; | |
8409 | case DW_OP_reg5: | |
8410 | return "DW_OP_reg5"; | |
8411 | case DW_OP_reg6: | |
8412 | return "DW_OP_reg6"; | |
8413 | case DW_OP_reg7: | |
8414 | return "DW_OP_reg7"; | |
8415 | case DW_OP_reg8: | |
8416 | return "DW_OP_reg8"; | |
8417 | case DW_OP_reg9: | |
8418 | return "DW_OP_reg9"; | |
8419 | case DW_OP_reg10: | |
8420 | return "DW_OP_reg10"; | |
8421 | case DW_OP_reg11: | |
8422 | return "DW_OP_reg11"; | |
8423 | case DW_OP_reg12: | |
8424 | return "DW_OP_reg12"; | |
8425 | case DW_OP_reg13: | |
8426 | return "DW_OP_reg13"; | |
8427 | case DW_OP_reg14: | |
8428 | return "DW_OP_reg14"; | |
8429 | case DW_OP_reg15: | |
8430 | return "DW_OP_reg15"; | |
8431 | case DW_OP_reg16: | |
8432 | return "DW_OP_reg16"; | |
8433 | case DW_OP_reg17: | |
8434 | return "DW_OP_reg17"; | |
8435 | case DW_OP_reg18: | |
8436 | return "DW_OP_reg18"; | |
8437 | case DW_OP_reg19: | |
8438 | return "DW_OP_reg19"; | |
8439 | case DW_OP_reg20: | |
8440 | return "DW_OP_reg20"; | |
8441 | case DW_OP_reg21: | |
8442 | return "DW_OP_reg21"; | |
8443 | case DW_OP_reg22: | |
8444 | return "DW_OP_reg22"; | |
8445 | case DW_OP_reg23: | |
8446 | return "DW_OP_reg23"; | |
8447 | case DW_OP_reg24: | |
8448 | return "DW_OP_reg24"; | |
8449 | case DW_OP_reg25: | |
8450 | return "DW_OP_reg25"; | |
8451 | case DW_OP_reg26: | |
8452 | return "DW_OP_reg26"; | |
8453 | case DW_OP_reg27: | |
8454 | return "DW_OP_reg27"; | |
8455 | case DW_OP_reg28: | |
8456 | return "DW_OP_reg28"; | |
8457 | case DW_OP_reg29: | |
8458 | return "DW_OP_reg29"; | |
8459 | case DW_OP_reg30: | |
8460 | return "DW_OP_reg30"; | |
8461 | case DW_OP_reg31: | |
8462 | return "DW_OP_reg31"; | |
8463 | case DW_OP_breg0: | |
8464 | return "DW_OP_breg0"; | |
8465 | case DW_OP_breg1: | |
8466 | return "DW_OP_breg1"; | |
8467 | case DW_OP_breg2: | |
8468 | return "DW_OP_breg2"; | |
8469 | case DW_OP_breg3: | |
8470 | return "DW_OP_breg3"; | |
8471 | case DW_OP_breg4: | |
8472 | return "DW_OP_breg4"; | |
8473 | case DW_OP_breg5: | |
8474 | return "DW_OP_breg5"; | |
8475 | case DW_OP_breg6: | |
8476 | return "DW_OP_breg6"; | |
8477 | case DW_OP_breg7: | |
8478 | return "DW_OP_breg7"; | |
8479 | case DW_OP_breg8: | |
8480 | return "DW_OP_breg8"; | |
8481 | case DW_OP_breg9: | |
8482 | return "DW_OP_breg9"; | |
8483 | case DW_OP_breg10: | |
8484 | return "DW_OP_breg10"; | |
8485 | case DW_OP_breg11: | |
8486 | return "DW_OP_breg11"; | |
8487 | case DW_OP_breg12: | |
8488 | return "DW_OP_breg12"; | |
8489 | case DW_OP_breg13: | |
8490 | return "DW_OP_breg13"; | |
8491 | case DW_OP_breg14: | |
8492 | return "DW_OP_breg14"; | |
8493 | case DW_OP_breg15: | |
8494 | return "DW_OP_breg15"; | |
8495 | case DW_OP_breg16: | |
8496 | return "DW_OP_breg16"; | |
8497 | case DW_OP_breg17: | |
8498 | return "DW_OP_breg17"; | |
8499 | case DW_OP_breg18: | |
8500 | return "DW_OP_breg18"; | |
8501 | case DW_OP_breg19: | |
8502 | return "DW_OP_breg19"; | |
8503 | case DW_OP_breg20: | |
8504 | return "DW_OP_breg20"; | |
8505 | case DW_OP_breg21: | |
8506 | return "DW_OP_breg21"; | |
8507 | case DW_OP_breg22: | |
8508 | return "DW_OP_breg22"; | |
8509 | case DW_OP_breg23: | |
8510 | return "DW_OP_breg23"; | |
8511 | case DW_OP_breg24: | |
8512 | return "DW_OP_breg24"; | |
8513 | case DW_OP_breg25: | |
8514 | return "DW_OP_breg25"; | |
8515 | case DW_OP_breg26: | |
8516 | return "DW_OP_breg26"; | |
8517 | case DW_OP_breg27: | |
8518 | return "DW_OP_breg27"; | |
8519 | case DW_OP_breg28: | |
8520 | return "DW_OP_breg28"; | |
8521 | case DW_OP_breg29: | |
8522 | return "DW_OP_breg29"; | |
8523 | case DW_OP_breg30: | |
8524 | return "DW_OP_breg30"; | |
8525 | case DW_OP_breg31: | |
8526 | return "DW_OP_breg31"; | |
8527 | case DW_OP_regx: | |
8528 | return "DW_OP_regx"; | |
8529 | case DW_OP_fbreg: | |
8530 | return "DW_OP_fbreg"; | |
8531 | case DW_OP_bregx: | |
8532 | return "DW_OP_bregx"; | |
8533 | case DW_OP_piece: | |
8534 | return "DW_OP_piece"; | |
8535 | case DW_OP_deref_size: | |
8536 | return "DW_OP_deref_size"; | |
8537 | case DW_OP_xderef_size: | |
8538 | return "DW_OP_xderef_size"; | |
8539 | case DW_OP_nop: | |
8540 | return "DW_OP_nop"; | |
b7619582 | 8541 | /* DWARF 3 extensions. */ |
ed348acc EZ |
8542 | case DW_OP_push_object_address: |
8543 | return "DW_OP_push_object_address"; | |
8544 | case DW_OP_call2: | |
8545 | return "DW_OP_call2"; | |
8546 | case DW_OP_call4: | |
8547 | return "DW_OP_call4"; | |
8548 | case DW_OP_call_ref: | |
8549 | return "DW_OP_call_ref"; | |
b7619582 GF |
8550 | /* GNU extensions. */ |
8551 | case DW_OP_form_tls_address: | |
8552 | return "DW_OP_form_tls_address"; | |
8553 | case DW_OP_call_frame_cfa: | |
8554 | return "DW_OP_call_frame_cfa"; | |
8555 | case DW_OP_bit_piece: | |
8556 | return "DW_OP_bit_piece"; | |
ed348acc EZ |
8557 | case DW_OP_GNU_push_tls_address: |
8558 | return "DW_OP_GNU_push_tls_address"; | |
b7619582 GF |
8559 | /* HP extensions. */ |
8560 | case DW_OP_HP_is_value: | |
8561 | return "DW_OP_HP_is_value"; | |
8562 | case DW_OP_HP_fltconst4: | |
8563 | return "DW_OP_HP_fltconst4"; | |
8564 | case DW_OP_HP_fltconst8: | |
8565 | return "DW_OP_HP_fltconst8"; | |
8566 | case DW_OP_HP_mod_range: | |
8567 | return "DW_OP_HP_mod_range"; | |
8568 | case DW_OP_HP_unmod_range: | |
8569 | return "DW_OP_HP_unmod_range"; | |
8570 | case DW_OP_HP_tls: | |
8571 | return "DW_OP_HP_tls"; | |
c906108c SS |
8572 | default: |
8573 | return "OP_<unknown>"; | |
8574 | } | |
8575 | } | |
8576 | ||
8577 | static char * | |
fba45db2 | 8578 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
8579 | { |
8580 | if (mybool) | |
8581 | return "TRUE"; | |
8582 | else | |
8583 | return "FALSE"; | |
8584 | } | |
8585 | ||
8586 | /* Convert a DWARF type code into its string name. */ | |
8587 | ||
8588 | static char * | |
aa1ee363 | 8589 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
8590 | { |
8591 | switch (enc) | |
8592 | { | |
b7619582 GF |
8593 | case DW_ATE_void: |
8594 | return "DW_ATE_void"; | |
c906108c SS |
8595 | case DW_ATE_address: |
8596 | return "DW_ATE_address"; | |
8597 | case DW_ATE_boolean: | |
8598 | return "DW_ATE_boolean"; | |
8599 | case DW_ATE_complex_float: | |
8600 | return "DW_ATE_complex_float"; | |
8601 | case DW_ATE_float: | |
8602 | return "DW_ATE_float"; | |
8603 | case DW_ATE_signed: | |
8604 | return "DW_ATE_signed"; | |
8605 | case DW_ATE_signed_char: | |
8606 | return "DW_ATE_signed_char"; | |
8607 | case DW_ATE_unsigned: | |
8608 | return "DW_ATE_unsigned"; | |
8609 | case DW_ATE_unsigned_char: | |
8610 | return "DW_ATE_unsigned_char"; | |
b7619582 | 8611 | /* DWARF 3. */ |
d9fa45fe DC |
8612 | case DW_ATE_imaginary_float: |
8613 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
8614 | case DW_ATE_packed_decimal: |
8615 | return "DW_ATE_packed_decimal"; | |
8616 | case DW_ATE_numeric_string: | |
8617 | return "DW_ATE_numeric_string"; | |
8618 | case DW_ATE_edited: | |
8619 | return "DW_ATE_edited"; | |
8620 | case DW_ATE_signed_fixed: | |
8621 | return "DW_ATE_signed_fixed"; | |
8622 | case DW_ATE_unsigned_fixed: | |
8623 | return "DW_ATE_unsigned_fixed"; | |
8624 | case DW_ATE_decimal_float: | |
8625 | return "DW_ATE_decimal_float"; | |
8626 | /* HP extensions. */ | |
8627 | case DW_ATE_HP_float80: | |
8628 | return "DW_ATE_HP_float80"; | |
8629 | case DW_ATE_HP_complex_float80: | |
8630 | return "DW_ATE_HP_complex_float80"; | |
8631 | case DW_ATE_HP_float128: | |
8632 | return "DW_ATE_HP_float128"; | |
8633 | case DW_ATE_HP_complex_float128: | |
8634 | return "DW_ATE_HP_complex_float128"; | |
8635 | case DW_ATE_HP_floathpintel: | |
8636 | return "DW_ATE_HP_floathpintel"; | |
8637 | case DW_ATE_HP_imaginary_float80: | |
8638 | return "DW_ATE_HP_imaginary_float80"; | |
8639 | case DW_ATE_HP_imaginary_float128: | |
8640 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
8641 | default: |
8642 | return "DW_ATE_<unknown>"; | |
8643 | } | |
8644 | } | |
8645 | ||
8646 | /* Convert a DWARF call frame info operation to its string name. */ | |
8647 | ||
8648 | #if 0 | |
8649 | static char * | |
aa1ee363 | 8650 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
8651 | { |
8652 | switch (cfi_opc) | |
8653 | { | |
8654 | case DW_CFA_advance_loc: | |
8655 | return "DW_CFA_advance_loc"; | |
8656 | case DW_CFA_offset: | |
8657 | return "DW_CFA_offset"; | |
8658 | case DW_CFA_restore: | |
8659 | return "DW_CFA_restore"; | |
8660 | case DW_CFA_nop: | |
8661 | return "DW_CFA_nop"; | |
8662 | case DW_CFA_set_loc: | |
8663 | return "DW_CFA_set_loc"; | |
8664 | case DW_CFA_advance_loc1: | |
8665 | return "DW_CFA_advance_loc1"; | |
8666 | case DW_CFA_advance_loc2: | |
8667 | return "DW_CFA_advance_loc2"; | |
8668 | case DW_CFA_advance_loc4: | |
8669 | return "DW_CFA_advance_loc4"; | |
8670 | case DW_CFA_offset_extended: | |
8671 | return "DW_CFA_offset_extended"; | |
8672 | case DW_CFA_restore_extended: | |
8673 | return "DW_CFA_restore_extended"; | |
8674 | case DW_CFA_undefined: | |
8675 | return "DW_CFA_undefined"; | |
8676 | case DW_CFA_same_value: | |
8677 | return "DW_CFA_same_value"; | |
8678 | case DW_CFA_register: | |
8679 | return "DW_CFA_register"; | |
8680 | case DW_CFA_remember_state: | |
8681 | return "DW_CFA_remember_state"; | |
8682 | case DW_CFA_restore_state: | |
8683 | return "DW_CFA_restore_state"; | |
8684 | case DW_CFA_def_cfa: | |
8685 | return "DW_CFA_def_cfa"; | |
8686 | case DW_CFA_def_cfa_register: | |
8687 | return "DW_CFA_def_cfa_register"; | |
8688 | case DW_CFA_def_cfa_offset: | |
8689 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 8690 | /* DWARF 3. */ |
985cb1a3 JM |
8691 | case DW_CFA_def_cfa_expression: |
8692 | return "DW_CFA_def_cfa_expression"; | |
8693 | case DW_CFA_expression: | |
8694 | return "DW_CFA_expression"; | |
8695 | case DW_CFA_offset_extended_sf: | |
8696 | return "DW_CFA_offset_extended_sf"; | |
8697 | case DW_CFA_def_cfa_sf: | |
8698 | return "DW_CFA_def_cfa_sf"; | |
8699 | case DW_CFA_def_cfa_offset_sf: | |
8700 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
8701 | case DW_CFA_val_offset: |
8702 | return "DW_CFA_val_offset"; | |
8703 | case DW_CFA_val_offset_sf: | |
8704 | return "DW_CFA_val_offset_sf"; | |
8705 | case DW_CFA_val_expression: | |
8706 | return "DW_CFA_val_expression"; | |
8707 | /* SGI/MIPS specific. */ | |
c906108c SS |
8708 | case DW_CFA_MIPS_advance_loc8: |
8709 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 8710 | /* GNU extensions. */ |
985cb1a3 JM |
8711 | case DW_CFA_GNU_window_save: |
8712 | return "DW_CFA_GNU_window_save"; | |
8713 | case DW_CFA_GNU_args_size: | |
8714 | return "DW_CFA_GNU_args_size"; | |
8715 | case DW_CFA_GNU_negative_offset_extended: | |
8716 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
8717 | default: |
8718 | return "DW_CFA_<unknown>"; | |
8719 | } | |
8720 | } | |
8721 | #endif | |
8722 | ||
f9aca02d | 8723 | static void |
fba45db2 | 8724 | dump_die (struct die_info *die) |
c906108c SS |
8725 | { |
8726 | unsigned int i; | |
8727 | ||
48cd0caa | 8728 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 8729 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 8730 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 8731 | dwarf_bool_name (die->child != NULL)); |
c906108c | 8732 | |
48cd0caa | 8733 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
8734 | for (i = 0; i < die->num_attrs; ++i) |
8735 | { | |
48cd0caa | 8736 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
8737 | dwarf_attr_name (die->attrs[i].name), |
8738 | dwarf_form_name (die->attrs[i].form)); | |
8739 | switch (die->attrs[i].form) | |
8740 | { | |
8741 | case DW_FORM_ref_addr: | |
8742 | case DW_FORM_addr: | |
48cd0caa | 8743 | fprintf_unfiltered (gdb_stderr, "address: "); |
66bf4b3a | 8744 | deprecated_print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr); |
c906108c SS |
8745 | break; |
8746 | case DW_FORM_block2: | |
8747 | case DW_FORM_block4: | |
8748 | case DW_FORM_block: | |
8749 | case DW_FORM_block1: | |
48cd0caa | 8750 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 8751 | break; |
10b3939b DJ |
8752 | case DW_FORM_ref1: |
8753 | case DW_FORM_ref2: | |
8754 | case DW_FORM_ref4: | |
8755 | fprintf_unfiltered (gdb_stderr, "constant ref: %ld (adjusted)", | |
8756 | (long) (DW_ADDR (&die->attrs[i]))); | |
8757 | break; | |
c906108c SS |
8758 | case DW_FORM_data1: |
8759 | case DW_FORM_data2: | |
8760 | case DW_FORM_data4: | |
ce5d95e1 | 8761 | case DW_FORM_data8: |
c906108c SS |
8762 | case DW_FORM_udata: |
8763 | case DW_FORM_sdata: | |
48cd0caa | 8764 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
8765 | break; |
8766 | case DW_FORM_string: | |
4bdf3d34 | 8767 | case DW_FORM_strp: |
48cd0caa | 8768 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 8769 | DW_STRING (&die->attrs[i]) |
c5aa993b | 8770 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
8771 | break; |
8772 | case DW_FORM_flag: | |
8773 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 8774 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 8775 | else |
48cd0caa | 8776 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 8777 | break; |
a8329558 KW |
8778 | case DW_FORM_indirect: |
8779 | /* the reader will have reduced the indirect form to | |
8780 | the "base form" so this form should not occur */ | |
48cd0caa | 8781 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 8782 | break; |
c906108c | 8783 | default: |
48cd0caa | 8784 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 8785 | die->attrs[i].form); |
c906108c | 8786 | } |
48cd0caa | 8787 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
8788 | } |
8789 | } | |
8790 | ||
f9aca02d | 8791 | static void |
fba45db2 | 8792 | dump_die_list (struct die_info *die) |
c906108c SS |
8793 | { |
8794 | while (die) | |
8795 | { | |
8796 | dump_die (die); | |
639d11d3 DC |
8797 | if (die->child != NULL) |
8798 | dump_die_list (die->child); | |
8799 | if (die->sibling != NULL) | |
8800 | dump_die_list (die->sibling); | |
c906108c SS |
8801 | } |
8802 | } | |
8803 | ||
f9aca02d | 8804 | static void |
10b3939b DJ |
8805 | store_in_ref_table (unsigned int offset, struct die_info *die, |
8806 | struct dwarf2_cu *cu) | |
c906108c SS |
8807 | { |
8808 | int h; | |
8809 | struct die_info *old; | |
8810 | ||
8811 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8812 | old = cu->die_ref_table[h]; |
c906108c | 8813 | die->next_ref = old; |
10b3939b | 8814 | cu->die_ref_table[h] = die; |
c906108c SS |
8815 | } |
8816 | ||
8817 | static unsigned int | |
e142c38c | 8818 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
8819 | { |
8820 | unsigned int result = 0; | |
8821 | ||
8822 | switch (attr->form) | |
8823 | { | |
8824 | case DW_FORM_ref_addr: | |
c906108c SS |
8825 | case DW_FORM_ref1: |
8826 | case DW_FORM_ref2: | |
8827 | case DW_FORM_ref4: | |
613e1657 | 8828 | case DW_FORM_ref8: |
c906108c | 8829 | case DW_FORM_ref_udata: |
10b3939b | 8830 | result = DW_ADDR (attr); |
c906108c SS |
8831 | break; |
8832 | default: | |
4d3c2250 | 8833 | complaint (&symfile_complaints, |
e2e0b3e5 | 8834 | _("unsupported die ref attribute form: '%s'"), |
4d3c2250 | 8835 | dwarf_form_name (attr->form)); |
c906108c SS |
8836 | } |
8837 | return result; | |
8838 | } | |
8839 | ||
a02abb62 JB |
8840 | /* Return the constant value held by the given attribute. Return -1 |
8841 | if the value held by the attribute is not constant. */ | |
8842 | ||
8843 | static int | |
8844 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
8845 | { | |
8846 | if (attr->form == DW_FORM_sdata) | |
8847 | return DW_SND (attr); | |
8848 | else if (attr->form == DW_FORM_udata | |
8849 | || attr->form == DW_FORM_data1 | |
8850 | || attr->form == DW_FORM_data2 | |
8851 | || attr->form == DW_FORM_data4 | |
8852 | || attr->form == DW_FORM_data8) | |
8853 | return DW_UNSND (attr); | |
8854 | else | |
8855 | { | |
e2e0b3e5 | 8856 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
8857 | dwarf_form_name (attr->form)); |
8858 | return default_value; | |
8859 | } | |
8860 | } | |
8861 | ||
f9aca02d | 8862 | static struct die_info * |
10b3939b DJ |
8863 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
8864 | struct dwarf2_cu *cu) | |
c906108c SS |
8865 | { |
8866 | struct die_info *die; | |
10b3939b | 8867 | unsigned int offset; |
c906108c | 8868 | int h; |
10b3939b DJ |
8869 | struct die_info temp_die; |
8870 | struct dwarf2_cu *target_cu; | |
8871 | ||
8872 | offset = dwarf2_get_ref_die_offset (attr, cu); | |
8873 | ||
8874 | if (DW_ADDR (attr) < cu->header.offset | |
8875 | || DW_ADDR (attr) >= cu->header.offset + cu->header.length) | |
8876 | { | |
8877 | struct dwarf2_per_cu_data *per_cu; | |
8878 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (attr), | |
8879 | cu->objfile); | |
8880 | target_cu = per_cu->cu; | |
8881 | } | |
8882 | else | |
8883 | target_cu = cu; | |
c906108c SS |
8884 | |
8885 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8886 | die = target_cu->die_ref_table[h]; |
c906108c SS |
8887 | while (die) |
8888 | { | |
8889 | if (die->offset == offset) | |
10b3939b | 8890 | return die; |
c906108c SS |
8891 | die = die->next_ref; |
8892 | } | |
10b3939b | 8893 | |
8a3fe4f8 AC |
8894 | error (_("Dwarf Error: Cannot find DIE at 0x%lx referenced from DIE " |
8895 | "at 0x%lx [in module %s]"), | |
10b3939b DJ |
8896 | (long) src_die->offset, (long) offset, cu->objfile->name); |
8897 | ||
c906108c SS |
8898 | return NULL; |
8899 | } | |
8900 | ||
8901 | static struct type * | |
e142c38c DJ |
8902 | dwarf2_fundamental_type (struct objfile *objfile, int typeid, |
8903 | struct dwarf2_cu *cu) | |
c906108c SS |
8904 | { |
8905 | if (typeid < 0 || typeid >= FT_NUM_MEMBERS) | |
8906 | { | |
8a3fe4f8 | 8907 | error (_("Dwarf Error: internal error - invalid fundamental type id %d [in module %s]"), |
659b0389 | 8908 | typeid, objfile->name); |
c906108c SS |
8909 | } |
8910 | ||
8911 | /* Look for this particular type in the fundamental type vector. If | |
8912 | one is not found, create and install one appropriate for the | |
8913 | current language and the current target machine. */ | |
8914 | ||
e142c38c | 8915 | if (cu->ftypes[typeid] == NULL) |
c906108c | 8916 | { |
e142c38c | 8917 | cu->ftypes[typeid] = cu->language_defn->la_fund_type (objfile, typeid); |
c906108c SS |
8918 | } |
8919 | ||
e142c38c | 8920 | return (cu->ftypes[typeid]); |
c906108c SS |
8921 | } |
8922 | ||
8923 | /* Decode simple location descriptions. | |
8924 | Given a pointer to a dwarf block that defines a location, compute | |
8925 | the location and return the value. | |
8926 | ||
4cecd739 DJ |
8927 | NOTE drow/2003-11-18: This function is called in two situations |
8928 | now: for the address of static or global variables (partial symbols | |
8929 | only) and for offsets into structures which are expected to be | |
8930 | (more or less) constant. The partial symbol case should go away, | |
8931 | and only the constant case should remain. That will let this | |
8932 | function complain more accurately. A few special modes are allowed | |
8933 | without complaint for global variables (for instance, global | |
8934 | register values and thread-local values). | |
c906108c SS |
8935 | |
8936 | A location description containing no operations indicates that the | |
4cecd739 | 8937 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
8938 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
8939 | callers will only want a very basic result and this can become a | |
8940 | complaint. | |
c906108c | 8941 | |
c906108c SS |
8942 | Note that stack[0] is unused except as a default error return. |
8943 | Note that stack overflow is not yet handled. */ | |
8944 | ||
8945 | static CORE_ADDR | |
e7c27a73 | 8946 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 8947 | { |
e7c27a73 DJ |
8948 | struct objfile *objfile = cu->objfile; |
8949 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
8950 | int i; |
8951 | int size = blk->size; | |
fe1b8b76 | 8952 | gdb_byte *data = blk->data; |
c906108c SS |
8953 | CORE_ADDR stack[64]; |
8954 | int stacki; | |
8955 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 8956 | gdb_byte op; |
c906108c SS |
8957 | |
8958 | i = 0; | |
8959 | stacki = 0; | |
8960 | stack[stacki] = 0; | |
c906108c SS |
8961 | |
8962 | while (i < size) | |
8963 | { | |
c906108c SS |
8964 | op = data[i++]; |
8965 | switch (op) | |
8966 | { | |
f1bea926 JM |
8967 | case DW_OP_lit0: |
8968 | case DW_OP_lit1: | |
8969 | case DW_OP_lit2: | |
8970 | case DW_OP_lit3: | |
8971 | case DW_OP_lit4: | |
8972 | case DW_OP_lit5: | |
8973 | case DW_OP_lit6: | |
8974 | case DW_OP_lit7: | |
8975 | case DW_OP_lit8: | |
8976 | case DW_OP_lit9: | |
8977 | case DW_OP_lit10: | |
8978 | case DW_OP_lit11: | |
8979 | case DW_OP_lit12: | |
8980 | case DW_OP_lit13: | |
8981 | case DW_OP_lit14: | |
8982 | case DW_OP_lit15: | |
8983 | case DW_OP_lit16: | |
8984 | case DW_OP_lit17: | |
8985 | case DW_OP_lit18: | |
8986 | case DW_OP_lit19: | |
8987 | case DW_OP_lit20: | |
8988 | case DW_OP_lit21: | |
8989 | case DW_OP_lit22: | |
8990 | case DW_OP_lit23: | |
8991 | case DW_OP_lit24: | |
8992 | case DW_OP_lit25: | |
8993 | case DW_OP_lit26: | |
8994 | case DW_OP_lit27: | |
8995 | case DW_OP_lit28: | |
8996 | case DW_OP_lit29: | |
8997 | case DW_OP_lit30: | |
8998 | case DW_OP_lit31: | |
8999 | stack[++stacki] = op - DW_OP_lit0; | |
9000 | break; | |
9001 | ||
c906108c SS |
9002 | case DW_OP_reg0: |
9003 | case DW_OP_reg1: | |
9004 | case DW_OP_reg2: | |
9005 | case DW_OP_reg3: | |
9006 | case DW_OP_reg4: | |
9007 | case DW_OP_reg5: | |
9008 | case DW_OP_reg6: | |
9009 | case DW_OP_reg7: | |
9010 | case DW_OP_reg8: | |
9011 | case DW_OP_reg9: | |
9012 | case DW_OP_reg10: | |
9013 | case DW_OP_reg11: | |
9014 | case DW_OP_reg12: | |
9015 | case DW_OP_reg13: | |
9016 | case DW_OP_reg14: | |
9017 | case DW_OP_reg15: | |
9018 | case DW_OP_reg16: | |
9019 | case DW_OP_reg17: | |
9020 | case DW_OP_reg18: | |
9021 | case DW_OP_reg19: | |
9022 | case DW_OP_reg20: | |
9023 | case DW_OP_reg21: | |
9024 | case DW_OP_reg22: | |
9025 | case DW_OP_reg23: | |
9026 | case DW_OP_reg24: | |
9027 | case DW_OP_reg25: | |
9028 | case DW_OP_reg26: | |
9029 | case DW_OP_reg27: | |
9030 | case DW_OP_reg28: | |
9031 | case DW_OP_reg29: | |
9032 | case DW_OP_reg30: | |
9033 | case DW_OP_reg31: | |
c906108c | 9034 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
9035 | if (i < size) |
9036 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9037 | break; |
9038 | ||
9039 | case DW_OP_regx: | |
c906108c SS |
9040 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
9041 | i += bytes_read; | |
c906108c | 9042 | stack[++stacki] = unsnd; |
4cecd739 DJ |
9043 | if (i < size) |
9044 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9045 | break; |
9046 | ||
9047 | case DW_OP_addr: | |
107d2387 | 9048 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 9049 | cu, &bytes_read); |
107d2387 | 9050 | i += bytes_read; |
c906108c SS |
9051 | break; |
9052 | ||
9053 | case DW_OP_const1u: | |
9054 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
9055 | i += 1; | |
9056 | break; | |
9057 | ||
9058 | case DW_OP_const1s: | |
9059 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
9060 | i += 1; | |
9061 | break; | |
9062 | ||
9063 | case DW_OP_const2u: | |
9064 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
9065 | i += 2; | |
9066 | break; | |
9067 | ||
9068 | case DW_OP_const2s: | |
9069 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
9070 | i += 2; | |
9071 | break; | |
9072 | ||
9073 | case DW_OP_const4u: | |
9074 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
9075 | i += 4; | |
9076 | break; | |
9077 | ||
9078 | case DW_OP_const4s: | |
9079 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
9080 | i += 4; | |
9081 | break; | |
9082 | ||
9083 | case DW_OP_constu: | |
9084 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 9085 | &bytes_read); |
c906108c SS |
9086 | i += bytes_read; |
9087 | break; | |
9088 | ||
9089 | case DW_OP_consts: | |
9090 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
9091 | i += bytes_read; | |
9092 | break; | |
9093 | ||
f1bea926 JM |
9094 | case DW_OP_dup: |
9095 | stack[stacki + 1] = stack[stacki]; | |
9096 | stacki++; | |
9097 | break; | |
9098 | ||
c906108c SS |
9099 | case DW_OP_plus: |
9100 | stack[stacki - 1] += stack[stacki]; | |
9101 | stacki--; | |
9102 | break; | |
9103 | ||
9104 | case DW_OP_plus_uconst: | |
9105 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
9106 | i += bytes_read; | |
9107 | break; | |
9108 | ||
9109 | case DW_OP_minus: | |
f1bea926 | 9110 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
9111 | stacki--; |
9112 | break; | |
9113 | ||
7a292a7a | 9114 | case DW_OP_deref: |
7a292a7a | 9115 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
9116 | this using GDB's address_class enum. This is valid for partial |
9117 | global symbols, although the variable's address will be bogus | |
9118 | in the psymtab. */ | |
7a292a7a | 9119 | if (i < size) |
4d3c2250 | 9120 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
9121 | break; |
9122 | ||
9d774e44 | 9123 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
9124 | /* The top of the stack has the offset from the beginning |
9125 | of the thread control block at which the variable is located. */ | |
9126 | /* Nothing should follow this operator, so the top of stack would | |
9127 | be returned. */ | |
4cecd739 DJ |
9128 | /* This is valid for partial global symbols, but the variable's |
9129 | address will be bogus in the psymtab. */ | |
9d774e44 | 9130 | if (i < size) |
4d3c2250 | 9131 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
9132 | break; |
9133 | ||
c906108c | 9134 | default: |
e2e0b3e5 | 9135 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
4d3c2250 | 9136 | dwarf_stack_op_name (op)); |
c906108c SS |
9137 | return (stack[stacki]); |
9138 | } | |
9139 | } | |
9140 | return (stack[stacki]); | |
9141 | } | |
9142 | ||
9143 | /* memory allocation interface */ | |
9144 | ||
c906108c | 9145 | static struct dwarf_block * |
7b5a2f43 | 9146 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
9147 | { |
9148 | struct dwarf_block *blk; | |
9149 | ||
9150 | blk = (struct dwarf_block *) | |
7b5a2f43 | 9151 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
9152 | return (blk); |
9153 | } | |
9154 | ||
9155 | static struct abbrev_info * | |
f3dd6933 | 9156 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
9157 | { |
9158 | struct abbrev_info *abbrev; | |
9159 | ||
f3dd6933 DJ |
9160 | abbrev = (struct abbrev_info *) |
9161 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
9162 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
9163 | return (abbrev); | |
9164 | } | |
9165 | ||
9166 | static struct die_info * | |
fba45db2 | 9167 | dwarf_alloc_die (void) |
c906108c SS |
9168 | { |
9169 | struct die_info *die; | |
9170 | ||
9171 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
9172 | memset (die, 0, sizeof (struct die_info)); | |
9173 | return (die); | |
9174 | } | |
2e276125 JB |
9175 | |
9176 | \f | |
9177 | /* Macro support. */ | |
9178 | ||
9179 | ||
9180 | /* Return the full name of file number I in *LH's file name table. | |
9181 | Use COMP_DIR as the name of the current directory of the | |
9182 | compilation. The result is allocated using xmalloc; the caller is | |
9183 | responsible for freeing it. */ | |
9184 | static char * | |
9185 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
9186 | { | |
6a83a1e6 EZ |
9187 | /* Is the file number a valid index into the line header's file name |
9188 | table? Remember that file numbers start with one, not zero. */ | |
9189 | if (1 <= file && file <= lh->num_file_names) | |
9190 | { | |
9191 | struct file_entry *fe = &lh->file_names[file - 1]; | |
2e276125 | 9192 | |
6a83a1e6 EZ |
9193 | if (IS_ABSOLUTE_PATH (fe->name)) |
9194 | return xstrdup (fe->name); | |
9195 | else | |
9196 | { | |
9197 | const char *dir; | |
9198 | int dir_len; | |
9199 | char *full_name; | |
9200 | ||
9201 | if (fe->dir_index) | |
9202 | dir = lh->include_dirs[fe->dir_index - 1]; | |
9203 | else | |
9204 | dir = comp_dir; | |
9205 | ||
9206 | if (dir) | |
9207 | { | |
9208 | dir_len = strlen (dir); | |
9209 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
9210 | strcpy (full_name, dir); | |
9211 | full_name[dir_len] = '/'; | |
9212 | strcpy (full_name + dir_len + 1, fe->name); | |
9213 | return full_name; | |
9214 | } | |
9215 | else | |
9216 | return xstrdup (fe->name); | |
9217 | } | |
9218 | } | |
2e276125 JB |
9219 | else |
9220 | { | |
6a83a1e6 EZ |
9221 | /* The compiler produced a bogus file number. We can at least |
9222 | record the macro definitions made in the file, even if we | |
9223 | won't be able to find the file by name. */ | |
9224 | char fake_name[80]; | |
9225 | sprintf (fake_name, "<bad macro file number %d>", file); | |
2e276125 | 9226 | |
6a83a1e6 EZ |
9227 | complaint (&symfile_complaints, |
9228 | _("bad file number in macro information (%d)"), | |
9229 | file); | |
2e276125 | 9230 | |
6a83a1e6 | 9231 | return xstrdup (fake_name); |
2e276125 JB |
9232 | } |
9233 | } | |
9234 | ||
9235 | ||
9236 | static struct macro_source_file * | |
9237 | macro_start_file (int file, int line, | |
9238 | struct macro_source_file *current_file, | |
9239 | const char *comp_dir, | |
9240 | struct line_header *lh, struct objfile *objfile) | |
9241 | { | |
9242 | /* The full name of this source file. */ | |
9243 | char *full_name = file_full_name (file, lh, comp_dir); | |
9244 | ||
9245 | /* We don't create a macro table for this compilation unit | |
9246 | at all until we actually get a filename. */ | |
9247 | if (! pending_macros) | |
4a146b47 | 9248 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 9249 | objfile->macro_cache); |
2e276125 JB |
9250 | |
9251 | if (! current_file) | |
9252 | /* If we have no current file, then this must be the start_file | |
9253 | directive for the compilation unit's main source file. */ | |
9254 | current_file = macro_set_main (pending_macros, full_name); | |
9255 | else | |
9256 | current_file = macro_include (current_file, line, full_name); | |
9257 | ||
9258 | xfree (full_name); | |
9259 | ||
9260 | return current_file; | |
9261 | } | |
9262 | ||
9263 | ||
9264 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
9265 | followed by a null byte. */ | |
9266 | static char * | |
9267 | copy_string (const char *buf, int len) | |
9268 | { | |
9269 | char *s = xmalloc (len + 1); | |
9270 | memcpy (s, buf, len); | |
9271 | s[len] = '\0'; | |
9272 | ||
9273 | return s; | |
9274 | } | |
9275 | ||
9276 | ||
9277 | static const char * | |
9278 | consume_improper_spaces (const char *p, const char *body) | |
9279 | { | |
9280 | if (*p == ' ') | |
9281 | { | |
4d3c2250 | 9282 | complaint (&symfile_complaints, |
e2e0b3e5 | 9283 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 9284 | body); |
2e276125 JB |
9285 | |
9286 | while (*p == ' ') | |
9287 | p++; | |
9288 | } | |
9289 | ||
9290 | return p; | |
9291 | } | |
9292 | ||
9293 | ||
9294 | static void | |
9295 | parse_macro_definition (struct macro_source_file *file, int line, | |
9296 | const char *body) | |
9297 | { | |
9298 | const char *p; | |
9299 | ||
9300 | /* The body string takes one of two forms. For object-like macro | |
9301 | definitions, it should be: | |
9302 | ||
9303 | <macro name> " " <definition> | |
9304 | ||
9305 | For function-like macro definitions, it should be: | |
9306 | ||
9307 | <macro name> "() " <definition> | |
9308 | or | |
9309 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
9310 | ||
9311 | Spaces may appear only where explicitly indicated, and in the | |
9312 | <definition>. | |
9313 | ||
9314 | The Dwarf 2 spec says that an object-like macro's name is always | |
9315 | followed by a space, but versions of GCC around March 2002 omit | |
9316 | the space when the macro's definition is the empty string. | |
9317 | ||
9318 | The Dwarf 2 spec says that there should be no spaces between the | |
9319 | formal arguments in a function-like macro's formal argument list, | |
9320 | but versions of GCC around March 2002 include spaces after the | |
9321 | commas. */ | |
9322 | ||
9323 | ||
9324 | /* Find the extent of the macro name. The macro name is terminated | |
9325 | by either a space or null character (for an object-like macro) or | |
9326 | an opening paren (for a function-like macro). */ | |
9327 | for (p = body; *p; p++) | |
9328 | if (*p == ' ' || *p == '(') | |
9329 | break; | |
9330 | ||
9331 | if (*p == ' ' || *p == '\0') | |
9332 | { | |
9333 | /* It's an object-like macro. */ | |
9334 | int name_len = p - body; | |
9335 | char *name = copy_string (body, name_len); | |
9336 | const char *replacement; | |
9337 | ||
9338 | if (*p == ' ') | |
9339 | replacement = body + name_len + 1; | |
9340 | else | |
9341 | { | |
4d3c2250 | 9342 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9343 | replacement = body + name_len; |
9344 | } | |
9345 | ||
9346 | macro_define_object (file, line, name, replacement); | |
9347 | ||
9348 | xfree (name); | |
9349 | } | |
9350 | else if (*p == '(') | |
9351 | { | |
9352 | /* It's a function-like macro. */ | |
9353 | char *name = copy_string (body, p - body); | |
9354 | int argc = 0; | |
9355 | int argv_size = 1; | |
9356 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
9357 | ||
9358 | p++; | |
9359 | ||
9360 | p = consume_improper_spaces (p, body); | |
9361 | ||
9362 | /* Parse the formal argument list. */ | |
9363 | while (*p && *p != ')') | |
9364 | { | |
9365 | /* Find the extent of the current argument name. */ | |
9366 | const char *arg_start = p; | |
9367 | ||
9368 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
9369 | p++; | |
9370 | ||
9371 | if (! *p || p == arg_start) | |
4d3c2250 | 9372 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9373 | else |
9374 | { | |
9375 | /* Make sure argv has room for the new argument. */ | |
9376 | if (argc >= argv_size) | |
9377 | { | |
9378 | argv_size *= 2; | |
9379 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
9380 | } | |
9381 | ||
9382 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
9383 | } | |
9384 | ||
9385 | p = consume_improper_spaces (p, body); | |
9386 | ||
9387 | /* Consume the comma, if present. */ | |
9388 | if (*p == ',') | |
9389 | { | |
9390 | p++; | |
9391 | ||
9392 | p = consume_improper_spaces (p, body); | |
9393 | } | |
9394 | } | |
9395 | ||
9396 | if (*p == ')') | |
9397 | { | |
9398 | p++; | |
9399 | ||
9400 | if (*p == ' ') | |
9401 | /* Perfectly formed definition, no complaints. */ | |
9402 | macro_define_function (file, line, name, | |
9403 | argc, (const char **) argv, | |
9404 | p + 1); | |
9405 | else if (*p == '\0') | |
9406 | { | |
9407 | /* Complain, but do define it. */ | |
4d3c2250 | 9408 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9409 | macro_define_function (file, line, name, |
9410 | argc, (const char **) argv, | |
9411 | p); | |
9412 | } | |
9413 | else | |
9414 | /* Just complain. */ | |
4d3c2250 | 9415 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9416 | } |
9417 | else | |
9418 | /* Just complain. */ | |
4d3c2250 | 9419 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9420 | |
9421 | xfree (name); | |
9422 | { | |
9423 | int i; | |
9424 | ||
9425 | for (i = 0; i < argc; i++) | |
9426 | xfree (argv[i]); | |
9427 | } | |
9428 | xfree (argv); | |
9429 | } | |
9430 | else | |
4d3c2250 | 9431 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9432 | } |
9433 | ||
9434 | ||
9435 | static void | |
9436 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
9437 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 9438 | struct dwarf2_cu *cu) |
2e276125 | 9439 | { |
fe1b8b76 | 9440 | gdb_byte *mac_ptr, *mac_end; |
2e276125 JB |
9441 | struct macro_source_file *current_file = 0; |
9442 | ||
6502dd73 | 9443 | if (dwarf2_per_objfile->macinfo_buffer == NULL) |
2e276125 | 9444 | { |
e2e0b3e5 | 9445 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
9446 | return; |
9447 | } | |
9448 | ||
6502dd73 DJ |
9449 | mac_ptr = dwarf2_per_objfile->macinfo_buffer + offset; |
9450 | mac_end = dwarf2_per_objfile->macinfo_buffer | |
9451 | + dwarf2_per_objfile->macinfo_size; | |
2e276125 JB |
9452 | |
9453 | for (;;) | |
9454 | { | |
9455 | enum dwarf_macinfo_record_type macinfo_type; | |
9456 | ||
9457 | /* Do we at least have room for a macinfo type byte? */ | |
9458 | if (mac_ptr >= mac_end) | |
9459 | { | |
4d3c2250 | 9460 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9461 | return; |
9462 | } | |
9463 | ||
9464 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
9465 | mac_ptr++; | |
9466 | ||
9467 | switch (macinfo_type) | |
9468 | { | |
9469 | /* A zero macinfo type indicates the end of the macro | |
9470 | information. */ | |
9471 | case 0: | |
9472 | return; | |
9473 | ||
9474 | case DW_MACINFO_define: | |
9475 | case DW_MACINFO_undef: | |
9476 | { | |
891d2f0b | 9477 | unsigned int bytes_read; |
2e276125 JB |
9478 | int line; |
9479 | char *body; | |
9480 | ||
9481 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9482 | mac_ptr += bytes_read; | |
9483 | body = read_string (abfd, mac_ptr, &bytes_read); | |
9484 | mac_ptr += bytes_read; | |
9485 | ||
9486 | if (! current_file) | |
4d3c2250 | 9487 | complaint (&symfile_complaints, |
e2e0b3e5 | 9488 | _("debug info gives macro %s outside of any file: %s"), |
4d3c2250 KB |
9489 | macinfo_type == |
9490 | DW_MACINFO_define ? "definition" : macinfo_type == | |
9491 | DW_MACINFO_undef ? "undefinition" : | |
9492 | "something-or-other", body); | |
2e276125 JB |
9493 | else |
9494 | { | |
9495 | if (macinfo_type == DW_MACINFO_define) | |
9496 | parse_macro_definition (current_file, line, body); | |
9497 | else if (macinfo_type == DW_MACINFO_undef) | |
9498 | macro_undef (current_file, line, body); | |
9499 | } | |
9500 | } | |
9501 | break; | |
9502 | ||
9503 | case DW_MACINFO_start_file: | |
9504 | { | |
891d2f0b | 9505 | unsigned int bytes_read; |
2e276125 JB |
9506 | int line, file; |
9507 | ||
9508 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9509 | mac_ptr += bytes_read; | |
9510 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9511 | mac_ptr += bytes_read; | |
9512 | ||
9513 | current_file = macro_start_file (file, line, | |
9514 | current_file, comp_dir, | |
e7c27a73 | 9515 | lh, cu->objfile); |
2e276125 JB |
9516 | } |
9517 | break; | |
9518 | ||
9519 | case DW_MACINFO_end_file: | |
9520 | if (! current_file) | |
4d3c2250 | 9521 | complaint (&symfile_complaints, |
e2e0b3e5 | 9522 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
9523 | else |
9524 | { | |
9525 | current_file = current_file->included_by; | |
9526 | if (! current_file) | |
9527 | { | |
9528 | enum dwarf_macinfo_record_type next_type; | |
9529 | ||
9530 | /* GCC circa March 2002 doesn't produce the zero | |
9531 | type byte marking the end of the compilation | |
9532 | unit. Complain if it's not there, but exit no | |
9533 | matter what. */ | |
9534 | ||
9535 | /* Do we at least have room for a macinfo type byte? */ | |
9536 | if (mac_ptr >= mac_end) | |
9537 | { | |
4d3c2250 | 9538 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9539 | return; |
9540 | } | |
9541 | ||
9542 | /* We don't increment mac_ptr here, so this is just | |
9543 | a look-ahead. */ | |
9544 | next_type = read_1_byte (abfd, mac_ptr); | |
9545 | if (next_type != 0) | |
4d3c2250 | 9546 | complaint (&symfile_complaints, |
e2e0b3e5 | 9547 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
9548 | |
9549 | return; | |
9550 | } | |
9551 | } | |
9552 | break; | |
9553 | ||
9554 | case DW_MACINFO_vendor_ext: | |
9555 | { | |
891d2f0b | 9556 | unsigned int bytes_read; |
2e276125 JB |
9557 | int constant; |
9558 | char *string; | |
9559 | ||
9560 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9561 | mac_ptr += bytes_read; | |
9562 | string = read_string (abfd, mac_ptr, &bytes_read); | |
9563 | mac_ptr += bytes_read; | |
9564 | ||
9565 | /* We don't recognize any vendor extensions. */ | |
9566 | } | |
9567 | break; | |
9568 | } | |
9569 | } | |
9570 | } | |
8e19ed76 PS |
9571 | |
9572 | /* Check if the attribute's form is a DW_FORM_block* | |
9573 | if so return true else false. */ | |
9574 | static int | |
9575 | attr_form_is_block (struct attribute *attr) | |
9576 | { | |
9577 | return (attr == NULL ? 0 : | |
9578 | attr->form == DW_FORM_block1 | |
9579 | || attr->form == DW_FORM_block2 | |
9580 | || attr->form == DW_FORM_block4 | |
9581 | || attr->form == DW_FORM_block); | |
9582 | } | |
4c2df51b DJ |
9583 | |
9584 | static void | |
9585 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 9586 | struct dwarf2_cu *cu) |
4c2df51b | 9587 | { |
99bcc461 DJ |
9588 | if ((attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) |
9589 | /* ".debug_loc" may not exist at all, or the offset may be outside | |
9590 | the section. If so, fall through to the complaint in the | |
9591 | other branch. */ | |
9592 | && DW_UNSND (attr) < dwarf2_per_objfile->loc_size) | |
4c2df51b | 9593 | { |
0d53c4c4 | 9594 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 9595 | |
4a146b47 | 9596 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9597 | sizeof (struct dwarf2_loclist_baton)); |
e7c27a73 | 9598 | baton->objfile = cu->objfile; |
4c2df51b | 9599 | |
0d53c4c4 DJ |
9600 | /* We don't know how long the location list is, but make sure we |
9601 | don't run off the edge of the section. */ | |
6502dd73 DJ |
9602 | baton->size = dwarf2_per_objfile->loc_size - DW_UNSND (attr); |
9603 | baton->data = dwarf2_per_objfile->loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
9604 | baton->base_address = cu->header.base_address; |
9605 | if (cu->header.base_known == 0) | |
0d53c4c4 | 9606 | complaint (&symfile_complaints, |
e2e0b3e5 | 9607 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 9608 | |
a67af2b9 | 9609 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
9610 | SYMBOL_LOCATION_BATON (sym) = baton; |
9611 | } | |
9612 | else | |
9613 | { | |
9614 | struct dwarf2_locexpr_baton *baton; | |
9615 | ||
4a146b47 | 9616 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9617 | sizeof (struct dwarf2_locexpr_baton)); |
e7c27a73 | 9618 | baton->objfile = cu->objfile; |
0d53c4c4 DJ |
9619 | |
9620 | if (attr_form_is_block (attr)) | |
9621 | { | |
9622 | /* Note that we're just copying the block's data pointer | |
9623 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
9624 | info_buffer for SYM's objfile; right now we never release |
9625 | that buffer, but when we do clean up properly this may | |
9626 | need to change. */ | |
0d53c4c4 DJ |
9627 | baton->size = DW_BLOCK (attr)->size; |
9628 | baton->data = DW_BLOCK (attr)->data; | |
9629 | } | |
9630 | else | |
9631 | { | |
9632 | dwarf2_invalid_attrib_class_complaint ("location description", | |
9633 | SYMBOL_NATURAL_NAME (sym)); | |
9634 | baton->size = 0; | |
9635 | baton->data = NULL; | |
9636 | } | |
9637 | ||
a67af2b9 | 9638 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
9639 | SYMBOL_LOCATION_BATON (sym) = baton; |
9640 | } | |
4c2df51b | 9641 | } |
6502dd73 | 9642 | |
ae038cb0 | 9643 | /* Locate the compilation unit from CU's objfile which contains the |
10b3939b | 9644 | DIE at OFFSET. Raises an error on failure. */ |
ae038cb0 DJ |
9645 | |
9646 | static struct dwarf2_per_cu_data * | |
9647 | dwarf2_find_containing_comp_unit (unsigned long offset, | |
9648 | struct objfile *objfile) | |
9649 | { | |
9650 | struct dwarf2_per_cu_data *this_cu; | |
9651 | int low, high; | |
9652 | ||
ae038cb0 DJ |
9653 | low = 0; |
9654 | high = dwarf2_per_objfile->n_comp_units - 1; | |
9655 | while (high > low) | |
9656 | { | |
9657 | int mid = low + (high - low) / 2; | |
9658 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) | |
9659 | high = mid; | |
9660 | else | |
9661 | low = mid + 1; | |
9662 | } | |
9663 | gdb_assert (low == high); | |
9664 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
9665 | { | |
10b3939b | 9666 | if (low == 0) |
8a3fe4f8 AC |
9667 | error (_("Dwarf Error: could not find partial DIE containing " |
9668 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
9669 | (long) offset, bfd_get_filename (objfile->obfd)); |
9670 | ||
ae038cb0 DJ |
9671 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
9672 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
9673 | } | |
9674 | else | |
9675 | { | |
9676 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
9677 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9678 | && offset >= this_cu->offset + this_cu->length) | |
8a3fe4f8 | 9679 | error (_("invalid dwarf2 offset %ld"), offset); |
ae038cb0 DJ |
9680 | gdb_assert (offset < this_cu->offset + this_cu->length); |
9681 | return this_cu; | |
9682 | } | |
9683 | } | |
9684 | ||
10b3939b DJ |
9685 | /* Locate the compilation unit from OBJFILE which is located at exactly |
9686 | OFFSET. Raises an error on failure. */ | |
9687 | ||
ae038cb0 DJ |
9688 | static struct dwarf2_per_cu_data * |
9689 | dwarf2_find_comp_unit (unsigned long offset, struct objfile *objfile) | |
9690 | { | |
9691 | struct dwarf2_per_cu_data *this_cu; | |
9692 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
9693 | if (this_cu->offset != offset) | |
8a3fe4f8 | 9694 | error (_("no compilation unit with offset %ld."), offset); |
ae038cb0 DJ |
9695 | return this_cu; |
9696 | } | |
9697 | ||
9698 | /* Release one cached compilation unit, CU. We unlink it from the tree | |
9699 | of compilation units, but we don't remove it from the read_in_chain; | |
9700 | the caller is responsible for that. */ | |
9701 | ||
9702 | static void | |
9703 | free_one_comp_unit (void *data) | |
9704 | { | |
9705 | struct dwarf2_cu *cu = data; | |
9706 | ||
9707 | if (cu->per_cu != NULL) | |
9708 | cu->per_cu->cu = NULL; | |
9709 | cu->per_cu = NULL; | |
9710 | ||
9711 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10b3939b DJ |
9712 | if (cu->dies) |
9713 | free_die_list (cu->dies); | |
ae038cb0 DJ |
9714 | |
9715 | xfree (cu); | |
9716 | } | |
9717 | ||
72bf9492 | 9718 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
9719 | when we're finished with it. We can't free the pointer itself, but be |
9720 | sure to unlink it from the cache. Also release any associated storage | |
9721 | and perform cache maintenance. | |
72bf9492 DJ |
9722 | |
9723 | Only used during partial symbol parsing. */ | |
9724 | ||
9725 | static void | |
9726 | free_stack_comp_unit (void *data) | |
9727 | { | |
9728 | struct dwarf2_cu *cu = data; | |
9729 | ||
9730 | obstack_free (&cu->comp_unit_obstack, NULL); | |
9731 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
9732 | |
9733 | if (cu->per_cu != NULL) | |
9734 | { | |
9735 | /* This compilation unit is on the stack in our caller, so we | |
9736 | should not xfree it. Just unlink it. */ | |
9737 | cu->per_cu->cu = NULL; | |
9738 | cu->per_cu = NULL; | |
9739 | ||
9740 | /* If we had a per-cu pointer, then we may have other compilation | |
9741 | units loaded, so age them now. */ | |
9742 | age_cached_comp_units (); | |
9743 | } | |
9744 | } | |
9745 | ||
9746 | /* Free all cached compilation units. */ | |
9747 | ||
9748 | static void | |
9749 | free_cached_comp_units (void *data) | |
9750 | { | |
9751 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9752 | ||
9753 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9754 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9755 | while (per_cu != NULL) | |
9756 | { | |
9757 | struct dwarf2_per_cu_data *next_cu; | |
9758 | ||
9759 | next_cu = per_cu->cu->read_in_chain; | |
9760 | ||
9761 | free_one_comp_unit (per_cu->cu); | |
9762 | *last_chain = next_cu; | |
9763 | ||
9764 | per_cu = next_cu; | |
9765 | } | |
9766 | } | |
9767 | ||
9768 | /* Increase the age counter on each cached compilation unit, and free | |
9769 | any that are too old. */ | |
9770 | ||
9771 | static void | |
9772 | age_cached_comp_units (void) | |
9773 | { | |
9774 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9775 | ||
9776 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
9777 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9778 | while (per_cu != NULL) | |
9779 | { | |
9780 | per_cu->cu->last_used ++; | |
9781 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
9782 | dwarf2_mark (per_cu->cu); | |
9783 | per_cu = per_cu->cu->read_in_chain; | |
9784 | } | |
9785 | ||
9786 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9787 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9788 | while (per_cu != NULL) | |
9789 | { | |
9790 | struct dwarf2_per_cu_data *next_cu; | |
9791 | ||
9792 | next_cu = per_cu->cu->read_in_chain; | |
9793 | ||
9794 | if (!per_cu->cu->mark) | |
9795 | { | |
9796 | free_one_comp_unit (per_cu->cu); | |
9797 | *last_chain = next_cu; | |
9798 | } | |
9799 | else | |
9800 | last_chain = &per_cu->cu->read_in_chain; | |
9801 | ||
9802 | per_cu = next_cu; | |
9803 | } | |
9804 | } | |
9805 | ||
9806 | /* Remove a single compilation unit from the cache. */ | |
9807 | ||
9808 | static void | |
9809 | free_one_cached_comp_unit (void *target_cu) | |
9810 | { | |
9811 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9812 | ||
9813 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9814 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9815 | while (per_cu != NULL) | |
9816 | { | |
9817 | struct dwarf2_per_cu_data *next_cu; | |
9818 | ||
9819 | next_cu = per_cu->cu->read_in_chain; | |
9820 | ||
9821 | if (per_cu->cu == target_cu) | |
9822 | { | |
9823 | free_one_comp_unit (per_cu->cu); | |
9824 | *last_chain = next_cu; | |
9825 | break; | |
9826 | } | |
9827 | else | |
9828 | last_chain = &per_cu->cu->read_in_chain; | |
9829 | ||
9830 | per_cu = next_cu; | |
9831 | } | |
9832 | } | |
9833 | ||
1c379e20 DJ |
9834 | /* A pair of DIE offset and GDB type pointer. We store these |
9835 | in a hash table separate from the DIEs, and preserve them | |
9836 | when the DIEs are flushed out of cache. */ | |
9837 | ||
9838 | struct dwarf2_offset_and_type | |
9839 | { | |
9840 | unsigned int offset; | |
9841 | struct type *type; | |
9842 | }; | |
9843 | ||
9844 | /* Hash function for a dwarf2_offset_and_type. */ | |
9845 | ||
9846 | static hashval_t | |
9847 | offset_and_type_hash (const void *item) | |
9848 | { | |
9849 | const struct dwarf2_offset_and_type *ofs = item; | |
9850 | return ofs->offset; | |
9851 | } | |
9852 | ||
9853 | /* Equality function for a dwarf2_offset_and_type. */ | |
9854 | ||
9855 | static int | |
9856 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
9857 | { | |
9858 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
9859 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9860 | return ofs_lhs->offset == ofs_rhs->offset; | |
9861 | } | |
9862 | ||
9863 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
9864 | table if necessary. */ | |
9865 | ||
9866 | static void | |
9867 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
9868 | { | |
9869 | struct dwarf2_offset_and_type **slot, ofs; | |
9870 | ||
9871 | die->type = type; | |
9872 | ||
9873 | if (cu->per_cu == NULL) | |
9874 | return; | |
9875 | ||
9876 | if (cu->per_cu->type_hash == NULL) | |
9877 | cu->per_cu->type_hash | |
9878 | = htab_create_alloc_ex (cu->header.length / 24, | |
9879 | offset_and_type_hash, | |
9880 | offset_and_type_eq, | |
9881 | NULL, | |
9882 | &cu->objfile->objfile_obstack, | |
9883 | hashtab_obstack_allocate, | |
9884 | dummy_obstack_deallocate); | |
9885 | ||
9886 | ofs.offset = die->offset; | |
9887 | ofs.type = type; | |
9888 | slot = (struct dwarf2_offset_and_type **) | |
9889 | htab_find_slot_with_hash (cu->per_cu->type_hash, &ofs, ofs.offset, INSERT); | |
9890 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); | |
9891 | **slot = ofs; | |
9892 | } | |
9893 | ||
1c379e20 DJ |
9894 | /* Find the type for DIE in TYPE_HASH, or return NULL if DIE does not |
9895 | have a saved type. */ | |
9896 | ||
9897 | static struct type * | |
9898 | get_die_type (struct die_info *die, htab_t type_hash) | |
9899 | { | |
9900 | struct dwarf2_offset_and_type *slot, ofs; | |
9901 | ||
9902 | ofs.offset = die->offset; | |
9903 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
9904 | if (slot) | |
9905 | return slot->type; | |
9906 | else | |
9907 | return NULL; | |
9908 | } | |
9909 | ||
9910 | /* Restore the types of the DIE tree starting at START_DIE from the hash | |
9911 | table saved in CU. */ | |
9912 | ||
9913 | static void | |
9914 | reset_die_and_siblings_types (struct die_info *start_die, struct dwarf2_cu *cu) | |
9915 | { | |
9916 | struct die_info *die; | |
9917 | ||
9918 | if (cu->per_cu->type_hash == NULL) | |
9919 | return; | |
9920 | ||
9921 | for (die = start_die; die != NULL; die = die->sibling) | |
9922 | { | |
9923 | die->type = get_die_type (die, cu->per_cu->type_hash); | |
9924 | if (die->child != NULL) | |
9925 | reset_die_and_siblings_types (die->child, cu); | |
9926 | } | |
9927 | } | |
9928 | ||
10b3939b DJ |
9929 | /* Set the mark field in CU and in every other compilation unit in the |
9930 | cache that we must keep because we are keeping CU. */ | |
9931 | ||
9932 | /* Add a dependence relationship from CU to REF_PER_CU. */ | |
9933 | ||
9934 | static void | |
9935 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
9936 | struct dwarf2_per_cu_data *ref_per_cu) | |
9937 | { | |
9938 | void **slot; | |
9939 | ||
9940 | if (cu->dependencies == NULL) | |
9941 | cu->dependencies | |
9942 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
9943 | NULL, &cu->comp_unit_obstack, | |
9944 | hashtab_obstack_allocate, | |
9945 | dummy_obstack_deallocate); | |
9946 | ||
9947 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
9948 | if (*slot == NULL) | |
9949 | *slot = ref_per_cu; | |
9950 | } | |
1c379e20 | 9951 | |
ae038cb0 DJ |
9952 | /* Set the mark field in CU and in every other compilation unit in the |
9953 | cache that we must keep because we are keeping CU. */ | |
9954 | ||
10b3939b DJ |
9955 | static int |
9956 | dwarf2_mark_helper (void **slot, void *data) | |
9957 | { | |
9958 | struct dwarf2_per_cu_data *per_cu; | |
9959 | ||
9960 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
9961 | if (per_cu->cu->mark) | |
9962 | return 1; | |
9963 | per_cu->cu->mark = 1; | |
9964 | ||
9965 | if (per_cu->cu->dependencies != NULL) | |
9966 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
9967 | ||
9968 | return 1; | |
9969 | } | |
9970 | ||
ae038cb0 DJ |
9971 | static void |
9972 | dwarf2_mark (struct dwarf2_cu *cu) | |
9973 | { | |
9974 | if (cu->mark) | |
9975 | return; | |
9976 | cu->mark = 1; | |
10b3939b DJ |
9977 | if (cu->dependencies != NULL) |
9978 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
9979 | } |
9980 | ||
9981 | static void | |
9982 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
9983 | { | |
9984 | while (per_cu) | |
9985 | { | |
9986 | per_cu->cu->mark = 0; | |
9987 | per_cu = per_cu->cu->read_in_chain; | |
9988 | } | |
72bf9492 DJ |
9989 | } |
9990 | ||
72bf9492 DJ |
9991 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
9992 | is its offset in .debug_info for this objfile. */ | |
9993 | ||
9994 | static hashval_t | |
9995 | partial_die_hash (const void *item) | |
9996 | { | |
9997 | const struct partial_die_info *part_die = item; | |
9998 | return part_die->offset; | |
9999 | } | |
10000 | ||
10001 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
10002 | are equal if they have the same offset. */ | |
10003 | ||
10004 | static int | |
10005 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
10006 | { | |
10007 | const struct partial_die_info *part_die_lhs = item_lhs; | |
10008 | const struct partial_die_info *part_die_rhs = item_rhs; | |
10009 | return part_die_lhs->offset == part_die_rhs->offset; | |
10010 | } | |
10011 | ||
ae038cb0 DJ |
10012 | static struct cmd_list_element *set_dwarf2_cmdlist; |
10013 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
10014 | ||
10015 | static void | |
10016 | set_dwarf2_cmd (char *args, int from_tty) | |
10017 | { | |
10018 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
10019 | } | |
10020 | ||
10021 | static void | |
10022 | show_dwarf2_cmd (char *args, int from_tty) | |
10023 | { | |
10024 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
10025 | } | |
10026 | ||
6502dd73 DJ |
10027 | void _initialize_dwarf2_read (void); |
10028 | ||
10029 | void | |
10030 | _initialize_dwarf2_read (void) | |
10031 | { | |
10032 | dwarf2_objfile_data_key = register_objfile_data (); | |
ae038cb0 | 10033 | |
1bedd215 AC |
10034 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
10035 | Set DWARF 2 specific variables.\n\ | |
10036 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10037 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
10038 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
10039 | ||
1bedd215 AC |
10040 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
10041 | Show DWARF 2 specific variables\n\ | |
10042 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10043 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
10044 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
10045 | ||
10046 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
10047 | &dwarf2_max_cache_age, _("\ |
10048 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10049 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10050 | A higher limit means that cached compilation units will be stored\n\ | |
10051 | in memory longer, and more total memory will be used. Zero disables\n\ | |
10052 | caching, which can slow down startup."), | |
2c5b56ce | 10053 | NULL, |
920d2a44 | 10054 | show_dwarf2_max_cache_age, |
2c5b56ce | 10055 | &set_dwarf2_cmdlist, |
ae038cb0 | 10056 | &show_dwarf2_cmdlist); |
6502dd73 | 10057 | } |