Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
b44e9041 EZ |
3 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
4 | 2004 | |
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 | |
28 | Foundation, Inc., 59 Temple Place - Suite 330, | |
29 | Boston, MA 02111-1307, 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. */ | |
165 | char *info_buffer; | |
166 | char *abbrev_buffer; | |
167 | char *line_buffer; | |
168 | char *str_buffer; | |
169 | char *macinfo_buffer; | |
170 | char *ranges_buffer; | |
171 | char *loc_buffer; | |
ae038cb0 | 172 | |
10b3939b DJ |
173 | /* A list of all the compilation units. This is used to locate |
174 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
175 | struct dwarf2_per_cu_data **all_comp_units; |
176 | ||
177 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
178 | int n_comp_units; | |
179 | ||
180 | /* A chain of compilation units that are currently read in, so that | |
181 | they can be freed later. */ | |
182 | struct dwarf2_per_cu_data *read_in_chain; | |
6502dd73 DJ |
183 | }; |
184 | ||
185 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 186 | |
086df311 DJ |
187 | static asection *dwarf_info_section; |
188 | static asection *dwarf_abbrev_section; | |
189 | static asection *dwarf_line_section; | |
190 | static asection *dwarf_pubnames_section; | |
191 | static asection *dwarf_aranges_section; | |
192 | static asection *dwarf_loc_section; | |
193 | static asection *dwarf_macinfo_section; | |
194 | static asection *dwarf_str_section; | |
195 | static asection *dwarf_ranges_section; | |
196 | asection *dwarf_frame_section; | |
197 | asection *dwarf_eh_frame_section; | |
198 | ||
c906108c SS |
199 | /* names of the debugging sections */ |
200 | ||
201 | #define INFO_SECTION ".debug_info" | |
202 | #define ABBREV_SECTION ".debug_abbrev" | |
203 | #define LINE_SECTION ".debug_line" | |
204 | #define PUBNAMES_SECTION ".debug_pubnames" | |
205 | #define ARANGES_SECTION ".debug_aranges" | |
206 | #define LOC_SECTION ".debug_loc" | |
207 | #define MACINFO_SECTION ".debug_macinfo" | |
208 | #define STR_SECTION ".debug_str" | |
af34e669 | 209 | #define RANGES_SECTION ".debug_ranges" |
b6af0555 JS |
210 | #define FRAME_SECTION ".debug_frame" |
211 | #define EH_FRAME_SECTION ".eh_frame" | |
c906108c SS |
212 | |
213 | /* local data types */ | |
214 | ||
57349743 JB |
215 | /* We hold several abbreviation tables in memory at the same time. */ |
216 | #ifndef ABBREV_HASH_SIZE | |
217 | #define ABBREV_HASH_SIZE 121 | |
218 | #endif | |
219 | ||
107d2387 AC |
220 | /* The data in a compilation unit header, after target2host |
221 | translation, looks like this. */ | |
c906108c | 222 | struct comp_unit_head |
a738430d MK |
223 | { |
224 | unsigned long length; | |
225 | short version; | |
226 | unsigned int abbrev_offset; | |
227 | unsigned char addr_size; | |
228 | unsigned char signed_addr_p; | |
57349743 | 229 | |
a738430d MK |
230 | /* Size of file offsets; either 4 or 8. */ |
231 | unsigned int offset_size; | |
57349743 | 232 | |
a738430d MK |
233 | /* Size of the length field; either 4 or 12. */ |
234 | unsigned int initial_length_size; | |
57349743 | 235 | |
a738430d MK |
236 | /* Offset to the first byte of this compilation unit header in the |
237 | .debug_info section, for resolving relative reference dies. */ | |
238 | unsigned int offset; | |
57349743 | 239 | |
a738430d MK |
240 | /* Pointer to this compilation unit header in the .debug_info |
241 | section. */ | |
242 | char *cu_head_ptr; | |
57349743 | 243 | |
a738430d MK |
244 | /* Pointer to the first die of this compilation unit. This will be |
245 | the first byte following the compilation unit header. */ | |
246 | char *first_die_ptr; | |
af34e669 | 247 | |
a738430d MK |
248 | /* Pointer to the next compilation unit header in the program. */ |
249 | struct comp_unit_head *next; | |
0d53c4c4 | 250 | |
a738430d MK |
251 | /* Base address of this compilation unit. */ |
252 | CORE_ADDR base_address; | |
0d53c4c4 | 253 | |
a738430d MK |
254 | /* Non-zero if base_address has been set. */ |
255 | int base_known; | |
256 | }; | |
c906108c | 257 | |
10b3939b DJ |
258 | /* Fixed size for the DIE hash table. */ |
259 | #ifndef REF_HASH_SIZE | |
260 | #define REF_HASH_SIZE 1021 | |
261 | #endif | |
262 | ||
e7c27a73 DJ |
263 | /* Internal state when decoding a particular compilation unit. */ |
264 | struct dwarf2_cu | |
265 | { | |
266 | /* The objfile containing this compilation unit. */ | |
267 | struct objfile *objfile; | |
268 | ||
269 | /* The header of the compilation unit. | |
270 | ||
271 | FIXME drow/2003-11-10: Some of the things from the comp_unit_head | |
f3dd6933 | 272 | should logically be moved to the dwarf2_cu structure. */ |
e7c27a73 | 273 | struct comp_unit_head header; |
e142c38c DJ |
274 | |
275 | struct function_range *first_fn, *last_fn, *cached_fn; | |
276 | ||
277 | /* The language we are debugging. */ | |
278 | enum language language; | |
279 | const struct language_defn *language_defn; | |
280 | ||
b0f35d58 DL |
281 | const char *producer; |
282 | ||
e142c38c DJ |
283 | /* The generic symbol table building routines have separate lists for |
284 | file scope symbols and all all other scopes (local scopes). So | |
285 | we need to select the right one to pass to add_symbol_to_list(). | |
286 | We do it by keeping a pointer to the correct list in list_in_scope. | |
287 | ||
288 | FIXME: The original dwarf code just treated the file scope as the | |
289 | first local scope, and all other local scopes as nested local | |
290 | scopes, and worked fine. Check to see if we really need to | |
291 | distinguish these in buildsym.c. */ | |
292 | struct pending **list_in_scope; | |
293 | ||
294 | /* Maintain an array of referenced fundamental types for the current | |
295 | compilation unit being read. For DWARF version 1, we have to construct | |
296 | the fundamental types on the fly, since no information about the | |
297 | fundamental types is supplied. Each such fundamental type is created by | |
298 | calling a language dependent routine to create the type, and then a | |
299 | pointer to that type is then placed in the array at the index specified | |
300 | by it's FT_<TYPENAME> value. The array has a fixed size set by the | |
301 | FT_NUM_MEMBERS compile time constant, which is the number of predefined | |
302 | fundamental types gdb knows how to construct. */ | |
303 | struct type *ftypes[FT_NUM_MEMBERS]; /* Fundamental types */ | |
f3dd6933 DJ |
304 | |
305 | /* DWARF abbreviation table associated with this compilation unit. */ | |
306 | struct abbrev_info **dwarf2_abbrevs; | |
307 | ||
308 | /* Storage for the abbrev table. */ | |
309 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
310 | |
311 | /* Hash table holding all the loaded partial DIEs. */ | |
312 | htab_t partial_dies; | |
313 | ||
314 | /* Storage for things with the same lifetime as this read-in compilation | |
315 | unit, including partial DIEs. */ | |
316 | struct obstack comp_unit_obstack; | |
317 | ||
ae038cb0 DJ |
318 | /* When multiple dwarf2_cu structures are living in memory, this field |
319 | chains them all together, so that they can be released efficiently. | |
320 | We will probably also want a generation counter so that most-recently-used | |
321 | compilation units are cached... */ | |
322 | struct dwarf2_per_cu_data *read_in_chain; | |
323 | ||
324 | /* Backchain to our per_cu entry if the tree has been built. */ | |
325 | struct dwarf2_per_cu_data *per_cu; | |
326 | ||
327 | /* How many compilation units ago was this CU last referenced? */ | |
328 | int last_used; | |
329 | ||
10b3939b DJ |
330 | /* A hash table of die offsets for following references. */ |
331 | struct die_info *die_ref_table[REF_HASH_SIZE]; | |
332 | ||
333 | /* Full DIEs if read in. */ | |
334 | struct die_info *dies; | |
335 | ||
336 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
337 | units referenced by this one. Only set during full symbol processing; | |
338 | partial symbol tables do not have dependencies. */ | |
339 | htab_t dependencies; | |
340 | ||
ae038cb0 DJ |
341 | /* Mark used when releasing cached dies. */ |
342 | unsigned int mark : 1; | |
343 | ||
344 | /* This flag will be set if this compilation unit might include | |
345 | inter-compilation-unit references. */ | |
346 | unsigned int has_form_ref_addr : 1; | |
347 | ||
72bf9492 DJ |
348 | /* This flag will be set if this compilation unit includes any |
349 | DW_TAG_namespace DIEs. If we know that there are explicit | |
350 | DIEs for namespaces, we don't need to try to infer them | |
351 | from mangled names. */ | |
352 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
353 | }; |
354 | ||
10b3939b DJ |
355 | /* Persistent data held for a compilation unit, even when not |
356 | processing it. We put a pointer to this structure in the | |
357 | read_symtab_private field of the psymtab. If we encounter | |
358 | inter-compilation-unit references, we also maintain a sorted | |
359 | list of all compilation units. */ | |
360 | ||
ae038cb0 DJ |
361 | struct dwarf2_per_cu_data |
362 | { | |
363 | /* The start offset and length of this compilation unit. 2**31-1 | |
364 | bytes should suffice to store the length of any compilation unit | |
365 | - if it doesn't, GDB will fall over anyway. */ | |
366 | unsigned long offset; | |
367 | unsigned long length : 31; | |
368 | ||
369 | /* Flag indicating this compilation unit will be read in before | |
370 | any of the current compilation units are processed. */ | |
371 | unsigned long queued : 1; | |
372 | ||
373 | /* Set iff currently read in. */ | |
374 | struct dwarf2_cu *cu; | |
1c379e20 DJ |
375 | |
376 | /* If full symbols for this CU have been read in, then this field | |
377 | holds a map of DIE offsets to types. It isn't always possible | |
378 | to reconstruct this information later, so we have to preserve | |
379 | it. */ | |
1c379e20 | 380 | htab_t type_hash; |
10b3939b DJ |
381 | |
382 | /* The partial symbol table associated with this compilation unit. */ | |
383 | struct partial_symtab *psymtab; | |
ae038cb0 DJ |
384 | }; |
385 | ||
debd256d JB |
386 | /* The line number information for a compilation unit (found in the |
387 | .debug_line section) begins with a "statement program header", | |
388 | which contains the following information. */ | |
389 | struct line_header | |
390 | { | |
391 | unsigned int total_length; | |
392 | unsigned short version; | |
393 | unsigned int header_length; | |
394 | unsigned char minimum_instruction_length; | |
395 | unsigned char default_is_stmt; | |
396 | int line_base; | |
397 | unsigned char line_range; | |
398 | unsigned char opcode_base; | |
399 | ||
400 | /* standard_opcode_lengths[i] is the number of operands for the | |
401 | standard opcode whose value is i. This means that | |
402 | standard_opcode_lengths[0] is unused, and the last meaningful | |
403 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
404 | unsigned char *standard_opcode_lengths; | |
405 | ||
406 | /* The include_directories table. NOTE! These strings are not | |
407 | allocated with xmalloc; instead, they are pointers into | |
408 | debug_line_buffer. If you try to free them, `free' will get | |
409 | indigestion. */ | |
410 | unsigned int num_include_dirs, include_dirs_size; | |
411 | char **include_dirs; | |
412 | ||
413 | /* The file_names table. NOTE! These strings are not allocated | |
414 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
415 | Don't try to free them directly. */ | |
416 | unsigned int num_file_names, file_names_size; | |
417 | struct file_entry | |
c906108c | 418 | { |
debd256d JB |
419 | char *name; |
420 | unsigned int dir_index; | |
421 | unsigned int mod_time; | |
422 | unsigned int length; | |
aaa75496 | 423 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
debd256d JB |
424 | } *file_names; |
425 | ||
426 | /* The start and end of the statement program following this | |
6502dd73 | 427 | header. These point into dwarf2_per_objfile->line_buffer. */ |
debd256d JB |
428 | char *statement_program_start, *statement_program_end; |
429 | }; | |
c906108c SS |
430 | |
431 | /* When we construct a partial symbol table entry we only | |
432 | need this much information. */ | |
433 | struct partial_die_info | |
434 | { | |
72bf9492 | 435 | /* Offset of this DIE. */ |
c906108c | 436 | unsigned int offset; |
72bf9492 DJ |
437 | |
438 | /* DWARF-2 tag for this DIE. */ | |
439 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
440 | ||
441 | /* Language code associated with this DIE. This is only used | |
442 | for the compilation unit DIE. */ | |
443 | unsigned int language : 8; | |
444 | ||
445 | /* Assorted flags describing the data found in this DIE. */ | |
446 | unsigned int has_children : 1; | |
447 | unsigned int is_external : 1; | |
448 | unsigned int is_declaration : 1; | |
449 | unsigned int has_type : 1; | |
450 | unsigned int has_specification : 1; | |
aaa75496 | 451 | unsigned int has_stmt_list : 1; |
72bf9492 DJ |
452 | unsigned int has_pc_info : 1; |
453 | ||
454 | /* Flag set if the SCOPE field of this structure has been | |
455 | computed. */ | |
456 | unsigned int scope_set : 1; | |
457 | ||
458 | /* The name of this DIE. Normally the value of DW_AT_name, but | |
459 | sometimes DW_TAG_MIPS_linkage_name or a string computed in some | |
460 | other fashion. */ | |
c906108c | 461 | char *name; |
57c22c6c | 462 | char *dirname; |
72bf9492 DJ |
463 | |
464 | /* The scope to prepend to our children. This is generally | |
465 | allocated on the comp_unit_obstack, so will disappear | |
466 | when this compilation unit leaves the cache. */ | |
467 | char *scope; | |
468 | ||
469 | /* The location description associated with this DIE, if any. */ | |
470 | struct dwarf_block *locdesc; | |
471 | ||
472 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
473 | CORE_ADDR lowpc; |
474 | CORE_ADDR highpc; | |
72bf9492 DJ |
475 | |
476 | /* Pointer into the info_buffer pointing at the target of | |
477 | DW_AT_sibling, if any. */ | |
c906108c | 478 | char *sibling; |
72bf9492 DJ |
479 | |
480 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
481 | DW_AT_specification (or DW_AT_abstract_origin or | |
482 | DW_AT_extension). */ | |
483 | unsigned int spec_offset; | |
484 | ||
aaa75496 JB |
485 | /* If HAS_STMT_LIST, the offset of the Line Number Information data. */ |
486 | unsigned int line_offset; | |
487 | ||
72bf9492 DJ |
488 | /* Pointers to this DIE's parent, first child, and next sibling, |
489 | if any. */ | |
490 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
491 | }; |
492 | ||
493 | /* This data structure holds the information of an abbrev. */ | |
494 | struct abbrev_info | |
495 | { | |
496 | unsigned int number; /* number identifying abbrev */ | |
497 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
498 | unsigned short has_children; /* boolean */ |
499 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
500 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
501 | struct abbrev_info *next; /* next in chain */ | |
502 | }; | |
503 | ||
504 | struct attr_abbrev | |
505 | { | |
506 | enum dwarf_attribute name; | |
507 | enum dwarf_form form; | |
508 | }; | |
509 | ||
510 | /* This data structure holds a complete die structure. */ | |
511 | struct die_info | |
512 | { | |
c5aa993b | 513 | enum dwarf_tag tag; /* Tag indicating type of die */ |
c5aa993b JM |
514 | unsigned int abbrev; /* Abbrev number */ |
515 | unsigned int offset; /* Offset in .debug_info section */ | |
516 | unsigned int num_attrs; /* Number of attributes */ | |
517 | struct attribute *attrs; /* An array of attributes */ | |
518 | struct die_info *next_ref; /* Next die in ref hash table */ | |
78ba4af6 JB |
519 | |
520 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
521 | points to this die's parent; CHILD points to the first child of | |
522 | this node; and all the children of a given node are chained | |
523 | together via their SIBLING fields, terminated by a die whose | |
524 | tag is zero. */ | |
639d11d3 DC |
525 | struct die_info *child; /* Its first child, if any. */ |
526 | struct die_info *sibling; /* Its next sibling, if any. */ | |
527 | struct die_info *parent; /* Its parent, if any. */ | |
78ba4af6 | 528 | |
c5aa993b | 529 | struct type *type; /* Cached type information */ |
c906108c SS |
530 | }; |
531 | ||
532 | /* Attributes have a name and a value */ | |
533 | struct attribute | |
534 | { | |
535 | enum dwarf_attribute name; | |
536 | enum dwarf_form form; | |
537 | union | |
538 | { | |
539 | char *str; | |
540 | struct dwarf_block *blk; | |
ce5d95e1 JB |
541 | unsigned long unsnd; |
542 | long int snd; | |
c906108c SS |
543 | CORE_ADDR addr; |
544 | } | |
545 | u; | |
546 | }; | |
547 | ||
5fb290d7 DJ |
548 | struct function_range |
549 | { | |
550 | const char *name; | |
551 | CORE_ADDR lowpc, highpc; | |
552 | int seen_line; | |
553 | struct function_range *next; | |
554 | }; | |
555 | ||
c906108c SS |
556 | /* Get at parts of an attribute structure */ |
557 | ||
558 | #define DW_STRING(attr) ((attr)->u.str) | |
559 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
560 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
561 | #define DW_SND(attr) ((attr)->u.snd) | |
562 | #define DW_ADDR(attr) ((attr)->u.addr) | |
563 | ||
564 | /* Blocks are a bunch of untyped bytes. */ | |
565 | struct dwarf_block | |
566 | { | |
567 | unsigned int size; | |
568 | char *data; | |
569 | }; | |
570 | ||
c906108c SS |
571 | #ifndef ATTR_ALLOC_CHUNK |
572 | #define ATTR_ALLOC_CHUNK 4 | |
573 | #endif | |
574 | ||
c906108c SS |
575 | /* Allocate fields for structs, unions and enums in this size. */ |
576 | #ifndef DW_FIELD_ALLOC_CHUNK | |
577 | #define DW_FIELD_ALLOC_CHUNK 4 | |
578 | #endif | |
579 | ||
c906108c SS |
580 | /* A zeroed version of a partial die for initialization purposes. */ |
581 | static struct partial_die_info zeroed_partial_die; | |
582 | ||
7a292a7a SS |
583 | /* FIXME: decode_locdesc sets these variables to describe the location |
584 | to the caller. These ought to be a structure or something. If | |
585 | none of the flags are set, the object lives at the address returned | |
586 | by decode_locdesc. */ | |
587 | ||
7a292a7a SS |
588 | static int isreg; /* Object lives in register. |
589 | decode_locdesc's return value is | |
590 | the register number. */ | |
c906108c | 591 | |
c906108c SS |
592 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
593 | but this would require a corresponding change in unpack_field_as_long | |
594 | and friends. */ | |
595 | static int bits_per_byte = 8; | |
596 | ||
597 | /* The routines that read and process dies for a C struct or C++ class | |
598 | pass lists of data member fields and lists of member function fields | |
599 | in an instance of a field_info structure, as defined below. */ | |
600 | struct field_info | |
c5aa993b JM |
601 | { |
602 | /* List of data member and baseclasses fields. */ | |
603 | struct nextfield | |
604 | { | |
605 | struct nextfield *next; | |
606 | int accessibility; | |
607 | int virtuality; | |
608 | struct field field; | |
609 | } | |
610 | *fields; | |
c906108c | 611 | |
c5aa993b JM |
612 | /* Number of fields. */ |
613 | int nfields; | |
c906108c | 614 | |
c5aa993b JM |
615 | /* Number of baseclasses. */ |
616 | int nbaseclasses; | |
c906108c | 617 | |
c5aa993b JM |
618 | /* Set if the accesibility of one of the fields is not public. */ |
619 | int non_public_fields; | |
c906108c | 620 | |
c5aa993b JM |
621 | /* Member function fields array, entries are allocated in the order they |
622 | are encountered in the object file. */ | |
623 | struct nextfnfield | |
624 | { | |
625 | struct nextfnfield *next; | |
626 | struct fn_field fnfield; | |
627 | } | |
628 | *fnfields; | |
c906108c | 629 | |
c5aa993b JM |
630 | /* Member function fieldlist array, contains name of possibly overloaded |
631 | member function, number of overloaded member functions and a pointer | |
632 | to the head of the member function field chain. */ | |
633 | struct fnfieldlist | |
634 | { | |
635 | char *name; | |
636 | int length; | |
637 | struct nextfnfield *head; | |
638 | } | |
639 | *fnfieldlists; | |
c906108c | 640 | |
c5aa993b JM |
641 | /* Number of entries in the fnfieldlists array. */ |
642 | int nfnfields; | |
643 | }; | |
c906108c | 644 | |
10b3939b DJ |
645 | /* One item on the queue of compilation units to read in full symbols |
646 | for. */ | |
647 | struct dwarf2_queue_item | |
648 | { | |
649 | struct dwarf2_per_cu_data *per_cu; | |
650 | struct dwarf2_queue_item *next; | |
651 | }; | |
652 | ||
653 | /* The current queue. */ | |
654 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
655 | ||
ae038cb0 DJ |
656 | /* Loaded secondary compilation units are kept in memory until they |
657 | have not been referenced for the processing of this many | |
658 | compilation units. Set this to zero to disable caching. Cache | |
659 | sizes of up to at least twenty will improve startup time for | |
660 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
661 | static int dwarf2_max_cache_age = 5; | |
662 | ||
c906108c SS |
663 | /* Various complaints about symbol reading that don't abort the process */ |
664 | ||
4d3c2250 KB |
665 | static void |
666 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 667 | { |
4d3c2250 KB |
668 | complaint (&symfile_complaints, |
669 | "statement list doesn't fit in .debug_line section"); | |
670 | } | |
671 | ||
672 | static void | |
673 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 674 | { |
4d3c2250 KB |
675 | complaint (&symfile_complaints, "location expression too complex"); |
676 | } | |
677 | ||
4d3c2250 KB |
678 | static void |
679 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
680 | int arg3) | |
2e276125 | 681 | { |
4d3c2250 KB |
682 | complaint (&symfile_complaints, |
683 | "const value length mismatch for '%s', got %d, expected %d", arg1, | |
684 | arg2, arg3); | |
685 | } | |
686 | ||
687 | static void | |
688 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 689 | { |
4d3c2250 KB |
690 | complaint (&symfile_complaints, |
691 | "macro info runs off end of `.debug_macinfo' section"); | |
692 | } | |
693 | ||
694 | static void | |
695 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 696 | { |
4d3c2250 KB |
697 | complaint (&symfile_complaints, |
698 | "macro debug info contains a malformed macro definition:\n`%s'", | |
699 | arg1); | |
700 | } | |
701 | ||
702 | static void | |
703 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 704 | { |
4d3c2250 KB |
705 | complaint (&symfile_complaints, |
706 | "invalid attribute class or form for '%s' in '%s'", arg1, arg2); | |
707 | } | |
c906108c | 708 | |
c906108c SS |
709 | /* local function prototypes */ |
710 | ||
4efb68b1 | 711 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
712 | |
713 | #if 0 | |
a14ed312 | 714 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
715 | #endif |
716 | ||
aaa75496 JB |
717 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
718 | struct objfile *); | |
719 | ||
720 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
721 | struct partial_die_info *, | |
722 | struct partial_symtab *); | |
723 | ||
a14ed312 | 724 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 725 | |
72bf9492 DJ |
726 | static void scan_partial_symbols (struct partial_die_info *, |
727 | CORE_ADDR *, CORE_ADDR *, | |
728 | struct dwarf2_cu *); | |
c906108c | 729 | |
72bf9492 DJ |
730 | static void add_partial_symbol (struct partial_die_info *, |
731 | struct dwarf2_cu *); | |
63d06c5c | 732 | |
72bf9492 | 733 | static int pdi_needs_namespace (enum dwarf_tag tag); |
91c24f0a | 734 | |
72bf9492 DJ |
735 | static void add_partial_namespace (struct partial_die_info *pdi, |
736 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
737 | struct dwarf2_cu *cu); | |
63d06c5c | 738 | |
72bf9492 DJ |
739 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
740 | struct dwarf2_cu *cu); | |
91c24f0a DC |
741 | |
742 | static char *locate_pdi_sibling (struct partial_die_info *orig_pdi, | |
743 | char *info_ptr, | |
744 | bfd *abfd, | |
e7c27a73 | 745 | struct dwarf2_cu *cu); |
91c24f0a | 746 | |
a14ed312 | 747 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 748 | |
a14ed312 | 749 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 750 | |
188dd5d6 | 751 | char *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 752 | |
e7c27a73 | 753 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 754 | |
f3dd6933 | 755 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 756 | |
72bf9492 DJ |
757 | static struct abbrev_info *peek_die_abbrev (char *, int *, struct dwarf2_cu *); |
758 | ||
57349743 | 759 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 760 | struct dwarf2_cu *); |
c906108c | 761 | |
72bf9492 DJ |
762 | static struct partial_die_info *load_partial_dies (bfd *, char *, int, |
763 | struct dwarf2_cu *); | |
764 | ||
a14ed312 | 765 | static char *read_partial_die (struct partial_die_info *, |
72bf9492 | 766 | struct abbrev_info *abbrev, unsigned int, |
e7c27a73 | 767 | bfd *, char *, struct dwarf2_cu *); |
c906108c | 768 | |
72bf9492 | 769 | static struct partial_die_info *find_partial_die (unsigned long, |
10b3939b | 770 | struct dwarf2_cu *); |
72bf9492 DJ |
771 | |
772 | static void fixup_partial_die (struct partial_die_info *, | |
773 | struct dwarf2_cu *); | |
774 | ||
107d2387 | 775 | static char *read_full_die (struct die_info **, bfd *, char *, |
e7c27a73 | 776 | struct dwarf2_cu *, int *); |
c906108c | 777 | |
a14ed312 | 778 | static char *read_attribute (struct attribute *, struct attr_abbrev *, |
e7c27a73 | 779 | bfd *, char *, struct dwarf2_cu *); |
c906108c | 780 | |
a8329558 | 781 | static char *read_attribute_value (struct attribute *, unsigned, |
e7c27a73 | 782 | bfd *, char *, struct dwarf2_cu *); |
a8329558 | 783 | |
a14ed312 | 784 | static unsigned int read_1_byte (bfd *, char *); |
c906108c | 785 | |
a14ed312 | 786 | static int read_1_signed_byte (bfd *, char *); |
c906108c | 787 | |
a14ed312 | 788 | static unsigned int read_2_bytes (bfd *, char *); |
c906108c | 789 | |
a14ed312 | 790 | static unsigned int read_4_bytes (bfd *, char *); |
c906108c | 791 | |
ce5d95e1 | 792 | static unsigned long read_8_bytes (bfd *, char *); |
c906108c | 793 | |
e7c27a73 | 794 | static CORE_ADDR read_address (bfd *, char *ptr, struct dwarf2_cu *, |
107d2387 | 795 | int *bytes_read); |
c906108c | 796 | |
613e1657 KB |
797 | static LONGEST read_initial_length (bfd *, char *, |
798 | struct comp_unit_head *, int *bytes_read); | |
799 | ||
800 | static LONGEST read_offset (bfd *, char *, const struct comp_unit_head *, | |
801 | int *bytes_read); | |
802 | ||
a14ed312 | 803 | static char *read_n_bytes (bfd *, char *, unsigned int); |
c906108c | 804 | |
a14ed312 | 805 | static char *read_string (bfd *, char *, unsigned int *); |
c906108c | 806 | |
4bdf3d34 JJ |
807 | static char *read_indirect_string (bfd *, char *, const struct comp_unit_head *, |
808 | unsigned int *); | |
809 | ||
ce5d95e1 | 810 | static unsigned long read_unsigned_leb128 (bfd *, char *, unsigned int *); |
c906108c | 811 | |
ce5d95e1 | 812 | static long read_signed_leb128 (bfd *, char *, unsigned int *); |
c906108c | 813 | |
4bb7a0a7 DJ |
814 | static char *skip_leb128 (bfd *, char *); |
815 | ||
e142c38c | 816 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 817 | |
e142c38c DJ |
818 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
819 | struct dwarf2_cu *); | |
c906108c | 820 | |
05cf31d1 JB |
821 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
822 | struct dwarf2_cu *cu); | |
823 | ||
e142c38c | 824 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 825 | |
e142c38c DJ |
826 | static struct die_info *die_specification (struct die_info *die, |
827 | struct dwarf2_cu *); | |
63d06c5c | 828 | |
debd256d JB |
829 | static void free_line_header (struct line_header *lh); |
830 | ||
aaa75496 JB |
831 | static void add_file_name (struct line_header *, char *, unsigned int, |
832 | unsigned int, unsigned int); | |
833 | ||
debd256d JB |
834 | static struct line_header *(dwarf_decode_line_header |
835 | (unsigned int offset, | |
e7c27a73 | 836 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
837 | |
838 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 839 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 840 | |
a14ed312 | 841 | static void dwarf2_start_subfile (char *, char *); |
c906108c | 842 | |
a14ed312 | 843 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 844 | struct dwarf2_cu *); |
c906108c | 845 | |
a14ed312 | 846 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 847 | struct dwarf2_cu *); |
c906108c | 848 | |
2df3850c JM |
849 | static void dwarf2_const_value_data (struct attribute *attr, |
850 | struct symbol *sym, | |
851 | int bits); | |
852 | ||
e7c27a73 | 853 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 854 | |
e7c27a73 DJ |
855 | static struct type *die_containing_type (struct die_info *, |
856 | struct dwarf2_cu *); | |
c906108c | 857 | |
e7c27a73 | 858 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 859 | |
e7c27a73 | 860 | static void read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 861 | |
086ed43d | 862 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 863 | |
987504bb JJ |
864 | static char *typename_concat (struct obstack *, const char *prefix, const char *suffix, |
865 | struct dwarf2_cu *); | |
63d06c5c | 866 | |
e7c27a73 | 867 | static void read_typedef (struct die_info *, struct dwarf2_cu *); |
c906108c | 868 | |
e7c27a73 | 869 | static void read_base_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 870 | |
a02abb62 JB |
871 | static void read_subrange_type (struct die_info *die, struct dwarf2_cu *cu); |
872 | ||
e7c27a73 | 873 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 874 | |
e7c27a73 | 875 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 876 | |
e7c27a73 | 877 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 878 | |
a14ed312 | 879 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 880 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 881 | |
fae299cd DC |
882 | static void get_scope_pc_bounds (struct die_info *, |
883 | CORE_ADDR *, CORE_ADDR *, | |
884 | struct dwarf2_cu *); | |
885 | ||
a14ed312 | 886 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 887 | struct dwarf2_cu *); |
c906108c | 888 | |
a14ed312 | 889 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 890 | struct type *, struct dwarf2_cu *); |
c906108c | 891 | |
a14ed312 | 892 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 893 | struct die_info *, struct type *, |
e7c27a73 | 894 | struct dwarf2_cu *); |
c906108c | 895 | |
a14ed312 | 896 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 897 | struct type *, struct dwarf2_cu *); |
c906108c | 898 | |
134d01f1 DJ |
899 | static void read_structure_type (struct die_info *, struct dwarf2_cu *); |
900 | ||
901 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 902 | |
8176b9b8 DC |
903 | static char *determine_class_name (struct die_info *die, struct dwarf2_cu *cu); |
904 | ||
e7c27a73 | 905 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 906 | |
e7c27a73 | 907 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 908 | |
38d518c9 | 909 | static const char *namespace_name (struct die_info *die, |
e142c38c | 910 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 911 | |
134d01f1 DJ |
912 | static void read_enumeration_type (struct die_info *, struct dwarf2_cu *); |
913 | ||
914 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 915 | |
e7c27a73 | 916 | static struct type *dwarf_base_type (int, int, struct dwarf2_cu *); |
c906108c | 917 | |
e7c27a73 | 918 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 919 | |
e7c27a73 | 920 | static void read_array_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 921 | |
7ca2d3a3 DL |
922 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
923 | struct dwarf2_cu *); | |
924 | ||
e7c27a73 | 925 | static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 926 | |
e7c27a73 DJ |
927 | static void read_tag_ptr_to_member_type (struct die_info *, |
928 | struct dwarf2_cu *); | |
c906108c | 929 | |
e7c27a73 | 930 | static void read_tag_reference_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 931 | |
e7c27a73 | 932 | static void read_tag_const_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 933 | |
e7c27a73 | 934 | static void read_tag_volatile_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 935 | |
e7c27a73 | 936 | static void read_tag_string_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 937 | |
e7c27a73 | 938 | static void read_subroutine_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 939 | |
e7c27a73 | 940 | static struct die_info *read_comp_unit (char *, bfd *, struct dwarf2_cu *); |
c906108c | 941 | |
639d11d3 | 942 | static struct die_info *read_die_and_children (char *info_ptr, bfd *abfd, |
e7c27a73 | 943 | struct dwarf2_cu *, |
639d11d3 DC |
944 | char **new_info_ptr, |
945 | struct die_info *parent); | |
946 | ||
947 | static struct die_info *read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 948 | struct dwarf2_cu *, |
639d11d3 DC |
949 | char **new_info_ptr, |
950 | struct die_info *parent); | |
951 | ||
a14ed312 | 952 | static void free_die_list (struct die_info *); |
c906108c | 953 | |
e7c27a73 | 954 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 955 | |
e142c38c | 956 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 957 | |
e142c38c | 958 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 959 | |
e142c38c DJ |
960 | static struct die_info *dwarf2_extension (struct die_info *die, |
961 | struct dwarf2_cu *); | |
9219021c | 962 | |
a14ed312 | 963 | static char *dwarf_tag_name (unsigned int); |
c906108c | 964 | |
a14ed312 | 965 | static char *dwarf_attr_name (unsigned int); |
c906108c | 966 | |
a14ed312 | 967 | static char *dwarf_form_name (unsigned int); |
c906108c | 968 | |
a14ed312 | 969 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 970 | |
a14ed312 | 971 | static char *dwarf_bool_name (unsigned int); |
c906108c | 972 | |
a14ed312 | 973 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
974 | |
975 | #if 0 | |
a14ed312 | 976 | static char *dwarf_cfi_name (unsigned int); |
c906108c | 977 | |
a14ed312 | 978 | struct die_info *copy_die (struct die_info *); |
c906108c SS |
979 | #endif |
980 | ||
f9aca02d | 981 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 982 | |
f9aca02d | 983 | static void dump_die (struct die_info *); |
c906108c | 984 | |
f9aca02d | 985 | static void dump_die_list (struct die_info *); |
c906108c | 986 | |
10b3939b DJ |
987 | static void store_in_ref_table (unsigned int, struct die_info *, |
988 | struct dwarf2_cu *); | |
c906108c | 989 | |
e142c38c DJ |
990 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
991 | struct dwarf2_cu *); | |
c906108c | 992 | |
a02abb62 JB |
993 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
994 | ||
10b3939b DJ |
995 | static struct die_info *follow_die_ref (struct die_info *, |
996 | struct attribute *, | |
997 | struct dwarf2_cu *); | |
c906108c | 998 | |
e142c38c DJ |
999 | static struct type *dwarf2_fundamental_type (struct objfile *, int, |
1000 | struct dwarf2_cu *); | |
c906108c SS |
1001 | |
1002 | /* memory allocation interface */ | |
1003 | ||
7b5a2f43 | 1004 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1005 | |
f3dd6933 | 1006 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1007 | |
a14ed312 | 1008 | static struct die_info *dwarf_alloc_die (void); |
c906108c | 1009 | |
e142c38c | 1010 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1011 | |
e142c38c DJ |
1012 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1013 | struct dwarf2_cu *); | |
5fb290d7 | 1014 | |
2e276125 | 1015 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1016 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1017 | |
8e19ed76 PS |
1018 | static int attr_form_is_block (struct attribute *); |
1019 | ||
4c2df51b DJ |
1020 | static void |
1021 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 1022 | struct dwarf2_cu *cu); |
4c2df51b | 1023 | |
4bb7a0a7 DJ |
1024 | static char *skip_one_die (char *info_ptr, struct abbrev_info *abbrev, |
1025 | struct dwarf2_cu *cu); | |
1026 | ||
72bf9492 DJ |
1027 | static void free_stack_comp_unit (void *); |
1028 | ||
1029 | static void *hashtab_obstack_allocate (void *data, size_t size, size_t count); | |
1030 | ||
1031 | static void dummy_obstack_deallocate (void *object, void *data); | |
1032 | ||
1033 | static hashval_t partial_die_hash (const void *item); | |
1034 | ||
1035 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1036 | ||
ae038cb0 DJ |
1037 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
1038 | (unsigned long offset, struct objfile *objfile); | |
1039 | ||
1040 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
1041 | (unsigned long offset, struct objfile *objfile); | |
1042 | ||
1043 | static void free_one_comp_unit (void *); | |
1044 | ||
1045 | static void free_cached_comp_units (void *); | |
1046 | ||
1047 | static void age_cached_comp_units (void); | |
1048 | ||
1049 | static void free_one_cached_comp_unit (void *); | |
1050 | ||
1c379e20 DJ |
1051 | static void set_die_type (struct die_info *, struct type *, |
1052 | struct dwarf2_cu *); | |
1053 | ||
1c379e20 DJ |
1054 | static void reset_die_and_siblings_types (struct die_info *, |
1055 | struct dwarf2_cu *); | |
1c379e20 | 1056 | |
ae038cb0 DJ |
1057 | static void create_all_comp_units (struct objfile *); |
1058 | ||
10b3939b DJ |
1059 | static struct dwarf2_cu *load_full_comp_unit (struct dwarf2_per_cu_data *); |
1060 | ||
1061 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1062 | ||
1063 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1064 | struct dwarf2_per_cu_data *); | |
1065 | ||
ae038cb0 DJ |
1066 | static void dwarf2_mark (struct dwarf2_cu *); |
1067 | ||
1068 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1069 | ||
c906108c SS |
1070 | /* Try to locate the sections we need for DWARF 2 debugging |
1071 | information and return true if we have enough to do something. */ | |
1072 | ||
1073 | int | |
6502dd73 | 1074 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1075 | { |
6502dd73 DJ |
1076 | struct dwarf2_per_objfile *data; |
1077 | ||
1078 | /* Initialize per-objfile state. */ | |
1079 | data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
1080 | memset (data, 0, sizeof (*data)); | |
1081 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1082 | dwarf2_per_objfile = data; | |
1083 | ||
188dd5d6 DJ |
1084 | dwarf_info_section = 0; |
1085 | dwarf_abbrev_section = 0; | |
1086 | dwarf_line_section = 0; | |
1087 | dwarf_str_section = 0; | |
1088 | dwarf_macinfo_section = 0; | |
1089 | dwarf_frame_section = 0; | |
1090 | dwarf_eh_frame_section = 0; | |
1091 | dwarf_ranges_section = 0; | |
1092 | dwarf_loc_section = 0; | |
af34e669 | 1093 | |
6502dd73 | 1094 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 1095 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
1096 | } |
1097 | ||
1098 | /* This function is mapped across the sections and remembers the | |
1099 | offset and size of each of the debugging sections we are interested | |
1100 | in. */ | |
1101 | ||
1102 | static void | |
4efb68b1 | 1103 | dwarf2_locate_sections (bfd *ignore_abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1104 | { |
6314a349 | 1105 | if (strcmp (sectp->name, INFO_SECTION) == 0) |
c906108c | 1106 | { |
2c500098 | 1107 | dwarf2_per_objfile->info_size = bfd_get_section_size (sectp); |
086df311 | 1108 | dwarf_info_section = sectp; |
c906108c | 1109 | } |
6314a349 | 1110 | else if (strcmp (sectp->name, ABBREV_SECTION) == 0) |
c906108c | 1111 | { |
2c500098 | 1112 | dwarf2_per_objfile->abbrev_size = bfd_get_section_size (sectp); |
086df311 | 1113 | dwarf_abbrev_section = sectp; |
c906108c | 1114 | } |
6314a349 | 1115 | else if (strcmp (sectp->name, LINE_SECTION) == 0) |
c906108c | 1116 | { |
2c500098 | 1117 | dwarf2_per_objfile->line_size = bfd_get_section_size (sectp); |
086df311 | 1118 | dwarf_line_section = sectp; |
c906108c | 1119 | } |
6314a349 | 1120 | else if (strcmp (sectp->name, PUBNAMES_SECTION) == 0) |
c906108c | 1121 | { |
2c500098 | 1122 | dwarf2_per_objfile->pubnames_size = bfd_get_section_size (sectp); |
086df311 | 1123 | dwarf_pubnames_section = sectp; |
c906108c | 1124 | } |
6314a349 | 1125 | else if (strcmp (sectp->name, ARANGES_SECTION) == 0) |
c906108c | 1126 | { |
2c500098 | 1127 | dwarf2_per_objfile->aranges_size = bfd_get_section_size (sectp); |
086df311 | 1128 | dwarf_aranges_section = sectp; |
c906108c | 1129 | } |
6314a349 | 1130 | else if (strcmp (sectp->name, LOC_SECTION) == 0) |
c906108c | 1131 | { |
2c500098 | 1132 | dwarf2_per_objfile->loc_size = bfd_get_section_size (sectp); |
086df311 | 1133 | dwarf_loc_section = sectp; |
c906108c | 1134 | } |
6314a349 | 1135 | else if (strcmp (sectp->name, MACINFO_SECTION) == 0) |
c906108c | 1136 | { |
2c500098 | 1137 | dwarf2_per_objfile->macinfo_size = bfd_get_section_size (sectp); |
0cf824c9 | 1138 | dwarf_macinfo_section = sectp; |
c906108c | 1139 | } |
6314a349 | 1140 | else if (strcmp (sectp->name, STR_SECTION) == 0) |
c906108c | 1141 | { |
2c500098 | 1142 | dwarf2_per_objfile->str_size = bfd_get_section_size (sectp); |
086df311 | 1143 | dwarf_str_section = sectp; |
c906108c | 1144 | } |
6314a349 | 1145 | else if (strcmp (sectp->name, FRAME_SECTION) == 0) |
b6af0555 | 1146 | { |
2c500098 | 1147 | dwarf2_per_objfile->frame_size = bfd_get_section_size (sectp); |
086df311 | 1148 | dwarf_frame_section = sectp; |
b6af0555 | 1149 | } |
6314a349 | 1150 | else if (strcmp (sectp->name, EH_FRAME_SECTION) == 0) |
b6af0555 | 1151 | { |
3799ccc6 EZ |
1152 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1153 | if (aflag & SEC_HAS_CONTENTS) | |
1154 | { | |
2c500098 | 1155 | dwarf2_per_objfile->eh_frame_size = bfd_get_section_size (sectp); |
3799ccc6 EZ |
1156 | dwarf_eh_frame_section = sectp; |
1157 | } | |
b6af0555 | 1158 | } |
6314a349 | 1159 | else if (strcmp (sectp->name, RANGES_SECTION) == 0) |
af34e669 | 1160 | { |
2c500098 | 1161 | dwarf2_per_objfile->ranges_size = bfd_get_section_size (sectp); |
6f10aeb1 | 1162 | dwarf_ranges_section = sectp; |
af34e669 | 1163 | } |
c906108c SS |
1164 | } |
1165 | ||
1166 | /* Build a partial symbol table. */ | |
1167 | ||
1168 | void | |
fba45db2 | 1169 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c | 1170 | { |
c906108c SS |
1171 | /* We definitely need the .debug_info and .debug_abbrev sections */ |
1172 | ||
6502dd73 DJ |
1173 | dwarf2_per_objfile->info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1174 | dwarf2_per_objfile->abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
188dd5d6 DJ |
1175 | |
1176 | if (dwarf_line_section) | |
6502dd73 | 1177 | dwarf2_per_objfile->line_buffer = dwarf2_read_section (objfile, dwarf_line_section); |
41ff2da1 | 1178 | else |
6502dd73 | 1179 | dwarf2_per_objfile->line_buffer = NULL; |
c906108c | 1180 | |
188dd5d6 | 1181 | if (dwarf_str_section) |
6502dd73 | 1182 | dwarf2_per_objfile->str_buffer = dwarf2_read_section (objfile, dwarf_str_section); |
4bdf3d34 | 1183 | else |
6502dd73 | 1184 | dwarf2_per_objfile->str_buffer = NULL; |
4bdf3d34 | 1185 | |
188dd5d6 | 1186 | if (dwarf_macinfo_section) |
6502dd73 | 1187 | dwarf2_per_objfile->macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1188 | dwarf_macinfo_section); |
2e276125 | 1189 | else |
6502dd73 | 1190 | dwarf2_per_objfile->macinfo_buffer = NULL; |
2e276125 | 1191 | |
188dd5d6 | 1192 | if (dwarf_ranges_section) |
6502dd73 | 1193 | dwarf2_per_objfile->ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); |
af34e669 | 1194 | else |
6502dd73 | 1195 | dwarf2_per_objfile->ranges_buffer = NULL; |
af34e669 | 1196 | |
188dd5d6 | 1197 | if (dwarf_loc_section) |
6502dd73 | 1198 | dwarf2_per_objfile->loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); |
0d53c4c4 | 1199 | else |
6502dd73 | 1200 | dwarf2_per_objfile->loc_buffer = NULL; |
0d53c4c4 | 1201 | |
ef96bde8 EZ |
1202 | if (mainline |
1203 | || (objfile->global_psymbols.size == 0 | |
1204 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1205 | { |
1206 | init_psymbol_list (objfile, 1024); | |
1207 | } | |
1208 | ||
1209 | #if 0 | |
1210 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1211 | { | |
d4f3574e | 1212 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1213 | .debug_pubnames sections */ |
1214 | ||
d4f3574e | 1215 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1216 | } |
1217 | else | |
1218 | #endif | |
1219 | /* only test this case for now */ | |
c5aa993b | 1220 | { |
c906108c | 1221 | /* In this case we have to work a bit harder */ |
d4f3574e | 1222 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1223 | } |
1224 | } | |
1225 | ||
1226 | #if 0 | |
1227 | /* Build the partial symbol table from the information in the | |
1228 | .debug_pubnames and .debug_aranges sections. */ | |
1229 | ||
1230 | static void | |
fba45db2 | 1231 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1232 | { |
1233 | bfd *abfd = objfile->obfd; | |
1234 | char *aranges_buffer, *pubnames_buffer; | |
1235 | char *aranges_ptr, *pubnames_ptr; | |
1236 | unsigned int entry_length, version, info_offset, info_size; | |
1237 | ||
1238 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1239 | dwarf_pubnames_section); |
c906108c | 1240 | pubnames_ptr = pubnames_buffer; |
6502dd73 | 1241 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames_size) |
c906108c | 1242 | { |
613e1657 KB |
1243 | struct comp_unit_head cu_header; |
1244 | int bytes_read; | |
1245 | ||
1246 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
1247 | &bytes_read); | |
1248 | pubnames_ptr += bytes_read; | |
c906108c SS |
1249 | version = read_1_byte (abfd, pubnames_ptr); |
1250 | pubnames_ptr += 1; | |
1251 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1252 | pubnames_ptr += 4; | |
1253 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1254 | pubnames_ptr += 4; | |
1255 | } | |
1256 | ||
1257 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1258 | dwarf_aranges_section); |
c906108c SS |
1259 | |
1260 | } | |
1261 | #endif | |
1262 | ||
107d2387 | 1263 | /* Read in the comp unit header information from the debug_info at |
917c78fc | 1264 | info_ptr. */ |
107d2387 AC |
1265 | |
1266 | static char * | |
1267 | read_comp_unit_head (struct comp_unit_head *cu_header, | |
1268 | char *info_ptr, bfd *abfd) | |
1269 | { | |
1270 | int signed_addr; | |
613e1657 KB |
1271 | int bytes_read; |
1272 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, | |
1273 | &bytes_read); | |
1274 | info_ptr += bytes_read; | |
107d2387 AC |
1275 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1276 | info_ptr += 2; | |
613e1657 KB |
1277 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1278 | &bytes_read); | |
1279 | info_ptr += bytes_read; | |
107d2387 AC |
1280 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1281 | info_ptr += 1; | |
1282 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1283 | if (signed_addr < 0) | |
8e65ff28 AC |
1284 | internal_error (__FILE__, __LINE__, |
1285 | "read_comp_unit_head: dwarf from non elf file"); | |
107d2387 AC |
1286 | cu_header->signed_addr_p = signed_addr; |
1287 | return info_ptr; | |
1288 | } | |
1289 | ||
72bf9492 DJ |
1290 | static char * |
1291 | partial_read_comp_unit_head (struct comp_unit_head *header, char *info_ptr, | |
1292 | bfd *abfd) | |
1293 | { | |
1294 | char *beg_of_comp_unit = info_ptr; | |
1295 | ||
1296 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1297 | ||
1298 | if (header->version != 2) | |
1299 | error ("Dwarf Error: wrong version in compilation unit header " | |
1300 | "(is %d, should be %d) [in module %s]", header->version, | |
1301 | 2, bfd_get_filename (abfd)); | |
1302 | ||
1303 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev_size) | |
1304 | error ("Dwarf Error: bad offset (0x%lx) in compilation unit header " | |
1305 | "(offset 0x%lx + 6) [in module %s]", | |
1306 | (long) header->abbrev_offset, | |
1307 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1308 | bfd_get_filename (abfd)); | |
1309 | ||
1310 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
1311 | > dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1312 | error ("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
1313 | "(offset 0x%lx + 0) [in module %s]", | |
1314 | (long) header->length, | |
1315 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1316 | bfd_get_filename (abfd)); | |
1317 | ||
1318 | return info_ptr; | |
1319 | } | |
1320 | ||
aaa75496 JB |
1321 | /* Allocate a new partial symtab for file named NAME and mark this new |
1322 | partial symtab as being an include of PST. */ | |
1323 | ||
1324 | static void | |
1325 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1326 | struct objfile *objfile) | |
1327 | { | |
1328 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1329 | ||
1330 | subpst->section_offsets = pst->section_offsets; | |
1331 | subpst->textlow = 0; | |
1332 | subpst->texthigh = 0; | |
1333 | ||
1334 | subpst->dependencies = (struct partial_symtab **) | |
1335 | obstack_alloc (&objfile->objfile_obstack, | |
1336 | sizeof (struct partial_symtab *)); | |
1337 | subpst->dependencies[0] = pst; | |
1338 | subpst->number_of_dependencies = 1; | |
1339 | ||
1340 | subpst->globals_offset = 0; | |
1341 | subpst->n_global_syms = 0; | |
1342 | subpst->statics_offset = 0; | |
1343 | subpst->n_static_syms = 0; | |
1344 | subpst->symtab = NULL; | |
1345 | subpst->read_symtab = pst->read_symtab; | |
1346 | subpst->readin = 0; | |
1347 | ||
1348 | /* No private part is necessary for include psymtabs. This property | |
1349 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1350 | the regular ones. */ |
58a9656e | 1351 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1352 | } |
1353 | ||
1354 | /* Read the Line Number Program data and extract the list of files | |
1355 | included by the source file represented by PST. Build an include | |
1356 | partial symtab for each of these included files. | |
1357 | ||
1358 | This procedure assumes that there *is* a Line Number Program in | |
1359 | the given CU. Callers should check that PDI->HAS_STMT_LIST is set | |
1360 | before calling this procedure. */ | |
1361 | ||
1362 | static void | |
1363 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
1364 | struct partial_die_info *pdi, | |
1365 | struct partial_symtab *pst) | |
1366 | { | |
1367 | struct objfile *objfile = cu->objfile; | |
1368 | bfd *abfd = objfile->obfd; | |
1369 | struct line_header *lh; | |
1370 | ||
1371 | lh = dwarf_decode_line_header (pdi->line_offset, abfd, cu); | |
1372 | if (lh == NULL) | |
1373 | return; /* No linetable, so no includes. */ | |
1374 | ||
1375 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1376 | ||
1377 | free_line_header (lh); | |
1378 | } | |
1379 | ||
1380 | ||
c906108c SS |
1381 | /* Build the partial symbol table by doing a quick pass through the |
1382 | .debug_info and .debug_abbrev sections. */ | |
1383 | ||
1384 | static void | |
fba45db2 | 1385 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1386 | { |
1387 | /* Instead of reading this into a big buffer, we should probably use | |
1388 | mmap() on architectures that support it. (FIXME) */ | |
1389 | bfd *abfd = objfile->obfd; | |
72bf9492 | 1390 | char *info_ptr; |
c906108c | 1391 | char *beg_of_comp_unit; |
c906108c SS |
1392 | struct partial_die_info comp_unit_die; |
1393 | struct partial_symtab *pst; | |
ae038cb0 | 1394 | struct cleanup *back_to; |
e142c38c | 1395 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1396 | |
6502dd73 | 1397 | info_ptr = dwarf2_per_objfile->info_buffer; |
c906108c | 1398 | |
ae038cb0 DJ |
1399 | /* Any cached compilation units will be linked by the per-objfile |
1400 | read_in_chain. Make sure to free them when we're done. */ | |
1401 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
1402 | ||
10b3939b DJ |
1403 | create_all_comp_units (objfile); |
1404 | ||
6502dd73 | 1405 | /* Since the objects we're extracting from .debug_info vary in |
af703f96 | 1406 | length, only the individual functions to extract them (like |
72bf9492 | 1407 | read_comp_unit_head and load_partial_die) can really know whether |
af703f96 JB |
1408 | the buffer is large enough to hold another complete object. |
1409 | ||
6502dd73 DJ |
1410 | At the moment, they don't actually check that. If .debug_info |
1411 | holds just one extra byte after the last compilation unit's dies, | |
1412 | then read_comp_unit_head will happily read off the end of the | |
1413 | buffer. read_partial_die is similarly casual. Those functions | |
1414 | should be fixed. | |
af703f96 JB |
1415 | |
1416 | For this loop condition, simply checking whether there's any data | |
1417 | left at all should be sufficient. */ | |
6502dd73 DJ |
1418 | while (info_ptr < (dwarf2_per_objfile->info_buffer |
1419 | + dwarf2_per_objfile->info_size)) | |
c906108c | 1420 | { |
f3dd6933 | 1421 | struct cleanup *back_to_inner; |
e7c27a73 | 1422 | struct dwarf2_cu cu; |
72bf9492 DJ |
1423 | struct abbrev_info *abbrev; |
1424 | unsigned int bytes_read; | |
1425 | struct dwarf2_per_cu_data *this_cu; | |
1426 | ||
c906108c | 1427 | beg_of_comp_unit = info_ptr; |
c906108c | 1428 | |
72bf9492 DJ |
1429 | memset (&cu, 0, sizeof (cu)); |
1430 | ||
1431 | obstack_init (&cu.comp_unit_obstack); | |
1432 | ||
1433 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); | |
1434 | ||
e7c27a73 | 1435 | cu.objfile = objfile; |
72bf9492 | 1436 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, abfd); |
e7c27a73 | 1437 | |
57349743 | 1438 | /* Complete the cu_header */ |
6502dd73 | 1439 | cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
e7c27a73 DJ |
1440 | cu.header.first_die_ptr = info_ptr; |
1441 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1442 | |
e142c38c DJ |
1443 | cu.list_in_scope = &file_symbols; |
1444 | ||
c906108c | 1445 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1446 | dwarf2_read_abbrevs (abfd, &cu); |
72bf9492 | 1447 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1448 | |
10b3939b | 1449 | this_cu = dwarf2_find_comp_unit (cu.header.offset, objfile); |
ae038cb0 | 1450 | |
c906108c | 1451 | /* Read the compilation unit die */ |
72bf9492 DJ |
1452 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, &cu); |
1453 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1454 | abfd, info_ptr, &cu); | |
c906108c SS |
1455 | |
1456 | /* Set the language we're debugging */ | |
e142c38c | 1457 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1458 | |
1459 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1460 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1461 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1462 | comp_unit_die.lowpc, |
1463 | objfile->global_psymbols.next, | |
1464 | objfile->static_psymbols.next); | |
1465 | ||
ae038cb0 DJ |
1466 | if (comp_unit_die.dirname) |
1467 | pst->dirname = xstrdup (comp_unit_die.dirname); | |
57c22c6c | 1468 | |
10b3939b DJ |
1469 | pst->read_symtab_private = (char *) this_cu; |
1470 | ||
613e1657 | 1471 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1472 | |
1473 | /* Store the function that reads in the rest of the symbol table */ | |
1474 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1475 | ||
10b3939b DJ |
1476 | /* If this compilation unit was already read in, free the |
1477 | cached copy in order to read it in again. This is | |
1478 | necessary because we skipped some symbols when we first | |
1479 | read in the compilation unit (see load_partial_dies). | |
1480 | This problem could be avoided, but the benefit is | |
1481 | unclear. */ | |
1482 | if (this_cu->cu != NULL) | |
1483 | free_one_cached_comp_unit (this_cu->cu); | |
ae038cb0 | 1484 | |
10b3939b | 1485 | cu.per_cu = this_cu; |
ae038cb0 | 1486 | |
10b3939b DJ |
1487 | /* Note that this is a pointer to our stack frame, being |
1488 | added to a global data structure. It will be cleaned up | |
1489 | in free_stack_comp_unit when we finish with this | |
1490 | compilation unit. */ | |
1491 | this_cu->cu = &cu; | |
ae038cb0 | 1492 | |
10b3939b | 1493 | this_cu->psymtab = pst; |
ae038cb0 | 1494 | |
c906108c SS |
1495 | /* Check if comp unit has_children. |
1496 | If so, read the rest of the partial symbols from this comp unit. | |
1497 | If not, there's no more debug_info for this comp unit. */ | |
1498 | if (comp_unit_die.has_children) | |
1499 | { | |
72bf9492 DJ |
1500 | struct partial_die_info *first_die; |
1501 | ||
91c24f0a DC |
1502 | lowpc = ((CORE_ADDR) -1); |
1503 | highpc = ((CORE_ADDR) 0); | |
1504 | ||
72bf9492 DJ |
1505 | first_die = load_partial_dies (abfd, info_ptr, 1, &cu); |
1506 | ||
1507 | scan_partial_symbols (first_die, &lowpc, &highpc, &cu); | |
c906108c | 1508 | |
91c24f0a DC |
1509 | /* If we didn't find a lowpc, set it to highpc to avoid |
1510 | complaints from `maint check'. */ | |
1511 | if (lowpc == ((CORE_ADDR) -1)) | |
1512 | lowpc = highpc; | |
72bf9492 | 1513 | |
c906108c SS |
1514 | /* If the compilation unit didn't have an explicit address range, |
1515 | then use the information extracted from its child dies. */ | |
0b010bcc | 1516 | if (! comp_unit_die.has_pc_info) |
c906108c | 1517 | { |
c5aa993b | 1518 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1519 | comp_unit_die.highpc = highpc; |
1520 | } | |
1521 | } | |
c5aa993b | 1522 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1523 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1524 | ||
1525 | pst->n_global_syms = objfile->global_psymbols.next - | |
1526 | (objfile->global_psymbols.list + pst->globals_offset); | |
1527 | pst->n_static_syms = objfile->static_psymbols.next - | |
1528 | (objfile->static_psymbols.list + pst->statics_offset); | |
1529 | sort_pst_symbols (pst); | |
1530 | ||
1531 | /* If there is already a psymtab or symtab for a file of this | |
1532 | name, remove it. (If there is a symtab, more drastic things | |
1533 | also happen.) This happens in VxWorks. */ | |
1534 | free_named_symtabs (pst->filename); | |
1535 | ||
aaa75496 JB |
1536 | if (comp_unit_die.has_stmt_list) |
1537 | { | |
1538 | /* Get the list of files included in the current compilation unit, | |
1539 | and build a psymtab for each of them. */ | |
1540 | dwarf2_build_include_psymtabs (&cu, &comp_unit_die, pst); | |
1541 | } | |
1542 | ||
72bf9492 | 1543 | info_ptr = beg_of_comp_unit + cu.header.length |
e7c27a73 | 1544 | + cu.header.initial_length_size; |
f3dd6933 DJ |
1545 | |
1546 | do_cleanups (back_to_inner); | |
c906108c | 1547 | } |
ae038cb0 DJ |
1548 | do_cleanups (back_to); |
1549 | } | |
1550 | ||
1551 | /* Load the DIEs for a secondary CU into memory. */ | |
1552 | ||
1553 | static void | |
1554 | load_comp_unit (struct dwarf2_per_cu_data *this_cu, struct objfile *objfile) | |
1555 | { | |
1556 | bfd *abfd = objfile->obfd; | |
1557 | char *info_ptr, *beg_of_comp_unit; | |
1558 | struct partial_die_info comp_unit_die; | |
1559 | struct dwarf2_cu *cu; | |
1560 | struct abbrev_info *abbrev; | |
1561 | unsigned int bytes_read; | |
1562 | struct cleanup *back_to; | |
1563 | ||
1564 | info_ptr = dwarf2_per_objfile->info_buffer + this_cu->offset; | |
1565 | beg_of_comp_unit = info_ptr; | |
1566 | ||
1567 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
1568 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
1569 | ||
1570 | obstack_init (&cu->comp_unit_obstack); | |
1571 | ||
1572 | cu->objfile = objfile; | |
1573 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, abfd); | |
1574 | ||
1575 | /* Complete the cu_header. */ | |
1576 | cu->header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; | |
1577 | cu->header.first_die_ptr = info_ptr; | |
1578 | cu->header.cu_head_ptr = beg_of_comp_unit; | |
1579 | ||
1580 | /* Read the abbrevs for this compilation unit into a table. */ | |
1581 | dwarf2_read_abbrevs (abfd, cu); | |
1582 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
1583 | ||
1584 | /* Read the compilation unit die. */ | |
1585 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1586 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1587 | abfd, info_ptr, cu); | |
1588 | ||
1589 | /* Set the language we're debugging. */ | |
1590 | set_cu_language (comp_unit_die.language, cu); | |
1591 | ||
1592 | /* Link this compilation unit into the compilation unit tree. */ | |
1593 | this_cu->cu = cu; | |
1594 | cu->per_cu = this_cu; | |
1595 | ||
1596 | /* Check if comp unit has_children. | |
1597 | If so, read the rest of the partial symbols from this comp unit. | |
1598 | If not, there's no more debug_info for this comp unit. */ | |
1599 | if (comp_unit_die.has_children) | |
1600 | load_partial_dies (abfd, info_ptr, 0, cu); | |
1601 | ||
1602 | do_cleanups (back_to); | |
1603 | } | |
1604 | ||
1605 | /* Create a list of all compilation units in OBJFILE. We do this only | |
1606 | if an inter-comp-unit reference is found; presumably if there is one, | |
1607 | there will be many, and one will occur early in the .debug_info section. | |
1608 | So there's no point in building this list incrementally. */ | |
1609 | ||
1610 | static void | |
1611 | create_all_comp_units (struct objfile *objfile) | |
1612 | { | |
1613 | int n_allocated; | |
1614 | int n_comp_units; | |
1615 | struct dwarf2_per_cu_data **all_comp_units; | |
1616 | char *info_ptr = dwarf2_per_objfile->info_buffer; | |
1617 | ||
1618 | n_comp_units = 0; | |
1619 | n_allocated = 10; | |
1620 | all_comp_units = xmalloc (n_allocated | |
1621 | * sizeof (struct dwarf2_per_cu_data *)); | |
1622 | ||
1623 | while (info_ptr < dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1624 | { | |
1625 | struct comp_unit_head cu_header; | |
1626 | char *beg_of_comp_unit; | |
1627 | struct dwarf2_per_cu_data *this_cu; | |
1628 | unsigned long offset; | |
1629 | int bytes_read; | |
1630 | ||
1631 | offset = info_ptr - dwarf2_per_objfile->info_buffer; | |
1632 | ||
1633 | /* Read just enough information to find out where the next | |
1634 | compilation unit is. */ | |
1635 | cu_header.length = read_initial_length (objfile->obfd, info_ptr, | |
1636 | &cu_header, &bytes_read); | |
1637 | ||
1638 | /* Save the compilation unit for later lookup. */ | |
1639 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
1640 | sizeof (struct dwarf2_per_cu_data)); | |
1641 | memset (this_cu, 0, sizeof (*this_cu)); | |
1642 | this_cu->offset = offset; | |
1643 | this_cu->length = cu_header.length + cu_header.initial_length_size; | |
1644 | ||
1645 | if (n_comp_units == n_allocated) | |
1646 | { | |
1647 | n_allocated *= 2; | |
1648 | all_comp_units = xrealloc (all_comp_units, | |
1649 | n_allocated | |
1650 | * sizeof (struct dwarf2_per_cu_data *)); | |
1651 | } | |
1652 | all_comp_units[n_comp_units++] = this_cu; | |
1653 | ||
1654 | info_ptr = info_ptr + this_cu->length; | |
1655 | } | |
1656 | ||
1657 | dwarf2_per_objfile->all_comp_units | |
1658 | = obstack_alloc (&objfile->objfile_obstack, | |
1659 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1660 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
1661 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1662 | xfree (all_comp_units); | |
1663 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
1664 | } |
1665 | ||
72bf9492 DJ |
1666 | /* Process all loaded DIEs for compilation unit CU, starting at FIRST_DIE. |
1667 | Also set *LOWPC and *HIGHPC to the lowest and highest PC values found | |
1668 | in CU. */ | |
c906108c | 1669 | |
72bf9492 DJ |
1670 | static void |
1671 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
1672 | CORE_ADDR *highpc, struct dwarf2_cu *cu) | |
c906108c | 1673 | { |
e7c27a73 | 1674 | struct objfile *objfile = cu->objfile; |
c906108c | 1675 | bfd *abfd = objfile->obfd; |
72bf9492 | 1676 | struct partial_die_info *pdi; |
c906108c | 1677 | |
91c24f0a DC |
1678 | /* Now, march along the PDI's, descending into ones which have |
1679 | interesting children but skipping the children of the other ones, | |
1680 | until we reach the end of the compilation unit. */ | |
c906108c | 1681 | |
72bf9492 | 1682 | pdi = first_die; |
91c24f0a | 1683 | |
72bf9492 DJ |
1684 | while (pdi != NULL) |
1685 | { | |
1686 | fixup_partial_die (pdi, cu); | |
c906108c | 1687 | |
91c24f0a DC |
1688 | /* Anonymous namespaces have no name but have interesting |
1689 | children, so we need to look at them. Ditto for anonymous | |
1690 | enums. */ | |
933c6fe4 | 1691 | |
72bf9492 DJ |
1692 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
1693 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 1694 | { |
72bf9492 | 1695 | switch (pdi->tag) |
c906108c SS |
1696 | { |
1697 | case DW_TAG_subprogram: | |
72bf9492 | 1698 | if (pdi->has_pc_info) |
c906108c | 1699 | { |
72bf9492 | 1700 | if (pdi->lowpc < *lowpc) |
c906108c | 1701 | { |
72bf9492 | 1702 | *lowpc = pdi->lowpc; |
c906108c | 1703 | } |
72bf9492 | 1704 | if (pdi->highpc > *highpc) |
c906108c | 1705 | { |
72bf9492 | 1706 | *highpc = pdi->highpc; |
c906108c | 1707 | } |
72bf9492 | 1708 | if (!pdi->is_declaration) |
c906108c | 1709 | { |
72bf9492 | 1710 | add_partial_symbol (pdi, cu); |
c906108c SS |
1711 | } |
1712 | } | |
1713 | break; | |
1714 | case DW_TAG_variable: | |
1715 | case DW_TAG_typedef: | |
91c24f0a | 1716 | case DW_TAG_union_type: |
72bf9492 | 1717 | if (!pdi->is_declaration) |
63d06c5c | 1718 | { |
72bf9492 | 1719 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
1720 | } |
1721 | break; | |
c906108c SS |
1722 | case DW_TAG_class_type: |
1723 | case DW_TAG_structure_type: | |
72bf9492 | 1724 | if (!pdi->is_declaration) |
c906108c | 1725 | { |
72bf9492 | 1726 | add_partial_symbol (pdi, cu); |
c906108c SS |
1727 | } |
1728 | break; | |
91c24f0a | 1729 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
1730 | if (!pdi->is_declaration) |
1731 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
1732 | break; |
1733 | case DW_TAG_base_type: | |
a02abb62 | 1734 | case DW_TAG_subrange_type: |
c906108c | 1735 | /* File scope base type definitions are added to the partial |
c5aa993b | 1736 | symbol table. */ |
72bf9492 | 1737 | add_partial_symbol (pdi, cu); |
c906108c | 1738 | break; |
d9fa45fe | 1739 | case DW_TAG_namespace: |
72bf9492 | 1740 | add_partial_namespace (pdi, lowpc, highpc, cu); |
91c24f0a | 1741 | break; |
c906108c SS |
1742 | default: |
1743 | break; | |
1744 | } | |
1745 | } | |
1746 | ||
72bf9492 DJ |
1747 | /* If the die has a sibling, skip to the sibling. */ |
1748 | ||
1749 | pdi = pdi->die_sibling; | |
1750 | } | |
1751 | } | |
1752 | ||
1753 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 1754 | |
72bf9492 | 1755 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
1756 | name is concatenated with "::" and the partial DIE's name. For |
1757 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
1758 | Enumerators are an exception; they use the scope of their parent |
1759 | enumeration type, i.e. the name of the enumeration type is not | |
1760 | prepended to the enumerator. | |
91c24f0a | 1761 | |
72bf9492 DJ |
1762 | There are two complexities. One is DW_AT_specification; in this |
1763 | case "parent" means the parent of the target of the specification, | |
1764 | instead of the direct parent of the DIE. The other is compilers | |
1765 | which do not emit DW_TAG_namespace; in this case we try to guess | |
1766 | the fully qualified name of structure types from their members' | |
1767 | linkage names. This must be done using the DIE's children rather | |
1768 | than the children of any DW_AT_specification target. We only need | |
1769 | to do this for structures at the top level, i.e. if the target of | |
1770 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
1771 | have a parent. */ | |
1772 | ||
1773 | /* Compute the scope prefix associated with PDI's parent, in | |
1774 | compilation unit CU. The result will be allocated on CU's | |
1775 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
1776 | field. NULL is returned if no prefix is necessary. */ | |
1777 | static char * | |
1778 | partial_die_parent_scope (struct partial_die_info *pdi, | |
1779 | struct dwarf2_cu *cu) | |
1780 | { | |
1781 | char *grandparent_scope; | |
1782 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 1783 | |
72bf9492 DJ |
1784 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
1785 | then this means the parent of the specification DIE. */ | |
1786 | ||
1787 | real_pdi = pdi; | |
72bf9492 | 1788 | while (real_pdi->has_specification) |
10b3939b | 1789 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
1790 | |
1791 | parent = real_pdi->die_parent; | |
1792 | if (parent == NULL) | |
1793 | return NULL; | |
1794 | ||
1795 | if (parent->scope_set) | |
1796 | return parent->scope; | |
1797 | ||
1798 | fixup_partial_die (parent, cu); | |
1799 | ||
10b3939b | 1800 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 DJ |
1801 | |
1802 | if (parent->tag == DW_TAG_namespace | |
1803 | || parent->tag == DW_TAG_structure_type | |
1804 | || parent->tag == DW_TAG_class_type | |
1805 | || parent->tag == DW_TAG_union_type) | |
1806 | { | |
1807 | if (grandparent_scope == NULL) | |
1808 | parent->scope = parent->name; | |
1809 | else | |
987504bb JJ |
1810 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
1811 | parent->name, cu); | |
72bf9492 DJ |
1812 | } |
1813 | else if (parent->tag == DW_TAG_enumeration_type) | |
1814 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
1815 | parent->scope = grandparent_scope; | |
1816 | else | |
1817 | { | |
1818 | /* FIXME drow/2004-04-01: What should we be doing with | |
1819 | function-local names? For partial symbols, we should probably be | |
1820 | ignoring them. */ | |
1821 | complaint (&symfile_complaints, | |
1822 | "unhandled containing DIE tag %d for DIE at %d", | |
1823 | parent->tag, pdi->offset); | |
1824 | parent->scope = grandparent_scope; | |
c906108c SS |
1825 | } |
1826 | ||
72bf9492 DJ |
1827 | parent->scope_set = 1; |
1828 | return parent->scope; | |
1829 | } | |
1830 | ||
1831 | /* Return the fully scoped name associated with PDI, from compilation unit | |
1832 | CU. The result will be allocated with malloc. */ | |
1833 | static char * | |
1834 | partial_die_full_name (struct partial_die_info *pdi, | |
1835 | struct dwarf2_cu *cu) | |
1836 | { | |
1837 | char *parent_scope; | |
1838 | ||
1839 | parent_scope = partial_die_parent_scope (pdi, cu); | |
1840 | if (parent_scope == NULL) | |
1841 | return NULL; | |
1842 | else | |
987504bb | 1843 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
1844 | } |
1845 | ||
1846 | static void | |
72bf9492 | 1847 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 1848 | { |
e7c27a73 | 1849 | struct objfile *objfile = cu->objfile; |
c906108c | 1850 | CORE_ADDR addr = 0; |
72bf9492 DJ |
1851 | char *actual_name; |
1852 | const char *my_prefix; | |
5c4e30ca | 1853 | const struct partial_symbol *psym = NULL; |
e142c38c | 1854 | CORE_ADDR baseaddr; |
72bf9492 | 1855 | int built_actual_name = 0; |
e142c38c DJ |
1856 | |
1857 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1858 | |
72bf9492 DJ |
1859 | actual_name = NULL; |
1860 | ||
1861 | if (pdi_needs_namespace (pdi->tag)) | |
63d06c5c | 1862 | { |
72bf9492 DJ |
1863 | actual_name = partial_die_full_name (pdi, cu); |
1864 | if (actual_name) | |
1865 | built_actual_name = 1; | |
63d06c5c DC |
1866 | } |
1867 | ||
72bf9492 DJ |
1868 | if (actual_name == NULL) |
1869 | actual_name = pdi->name; | |
1870 | ||
c906108c SS |
1871 | switch (pdi->tag) |
1872 | { | |
1873 | case DW_TAG_subprogram: | |
1874 | if (pdi->is_external) | |
1875 | { | |
38d518c9 | 1876 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1877 | mst_text, objfile); */ |
38d518c9 | 1878 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1879 | VAR_DOMAIN, LOC_BLOCK, |
1880 | &objfile->global_psymbols, | |
1881 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1882 | cu->language, objfile); |
c906108c SS |
1883 | } |
1884 | else | |
1885 | { | |
38d518c9 | 1886 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1887 | mst_file_text, objfile); */ |
38d518c9 | 1888 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1889 | VAR_DOMAIN, LOC_BLOCK, |
1890 | &objfile->static_psymbols, | |
1891 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1892 | cu->language, objfile); |
c906108c SS |
1893 | } |
1894 | break; | |
1895 | case DW_TAG_variable: | |
1896 | if (pdi->is_external) | |
1897 | { | |
1898 | /* Global Variable. | |
1899 | Don't enter into the minimal symbol tables as there is | |
1900 | a minimal symbol table entry from the ELF symbols already. | |
1901 | Enter into partial symbol table if it has a location | |
1902 | descriptor or a type. | |
1903 | If the location descriptor is missing, new_symbol will create | |
1904 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1905 | be determined from the minimal symbol table whenever the variable | |
1906 | is referenced. | |
1907 | The address for the partial symbol table entry is not | |
1908 | used by GDB, but it comes in handy for debugging partial symbol | |
1909 | table building. */ | |
1910 | ||
1911 | if (pdi->locdesc) | |
e7c27a73 | 1912 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1913 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1914 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1915 | VAR_DOMAIN, LOC_STATIC, |
1916 | &objfile->global_psymbols, | |
1917 | 0, addr + baseaddr, | |
e142c38c | 1918 | cu->language, objfile); |
c906108c SS |
1919 | } |
1920 | else | |
1921 | { | |
1922 | /* Static Variable. Skip symbols without location descriptors. */ | |
1923 | if (pdi->locdesc == NULL) | |
1924 | return; | |
e7c27a73 | 1925 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 1926 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 1927 | mst_file_data, objfile); */ |
38d518c9 | 1928 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1929 | VAR_DOMAIN, LOC_STATIC, |
1930 | &objfile->static_psymbols, | |
1931 | 0, addr + baseaddr, | |
e142c38c | 1932 | cu->language, objfile); |
c906108c SS |
1933 | } |
1934 | break; | |
1935 | case DW_TAG_typedef: | |
1936 | case DW_TAG_base_type: | |
a02abb62 | 1937 | case DW_TAG_subrange_type: |
38d518c9 | 1938 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1939 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 1940 | &objfile->static_psymbols, |
e142c38c | 1941 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1942 | break; |
72bf9492 DJ |
1943 | case DW_TAG_namespace: |
1944 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
1945 | VAR_DOMAIN, LOC_TYPEDEF, | |
1946 | &objfile->global_psymbols, | |
1947 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
1948 | break; | |
c906108c SS |
1949 | case DW_TAG_class_type: |
1950 | case DW_TAG_structure_type: | |
1951 | case DW_TAG_union_type: | |
1952 | case DW_TAG_enumeration_type: | |
1953 | /* Skip aggregate types without children, these are external | |
c5aa993b | 1954 | references. */ |
63d06c5c DC |
1955 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
1956 | static vs. global. */ | |
c906108c SS |
1957 | if (pdi->has_children == 0) |
1958 | return; | |
38d518c9 | 1959 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1960 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
1961 | (cu->language == language_cplus |
1962 | || cu->language == language_java) | |
63d06c5c DC |
1963 | ? &objfile->global_psymbols |
1964 | : &objfile->static_psymbols, | |
e142c38c | 1965 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1966 | |
987504bb JJ |
1967 | if (cu->language == language_cplus |
1968 | || cu->language == language_java) | |
c906108c | 1969 | { |
987504bb | 1970 | /* For C++ and Java, these implicitly act as typedefs as well. */ |
38d518c9 | 1971 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1972 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 1973 | &objfile->global_psymbols, |
e142c38c | 1974 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1975 | } |
1976 | break; | |
1977 | case DW_TAG_enumerator: | |
38d518c9 | 1978 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1979 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
1980 | (cu->language == language_cplus |
1981 | || cu->language == language_java) | |
f6fe98ef DJ |
1982 | ? &objfile->global_psymbols |
1983 | : &objfile->static_psymbols, | |
e142c38c | 1984 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1985 | break; |
1986 | default: | |
1987 | break; | |
1988 | } | |
5c4e30ca DC |
1989 | |
1990 | /* Check to see if we should scan the name for possible namespace | |
1991 | info. Only do this if this is C++, if we don't have namespace | |
1992 | debugging info in the file, if the psym is of an appropriate type | |
1993 | (otherwise we'll have psym == NULL), and if we actually had a | |
1994 | mangled name to begin with. */ | |
1995 | ||
72bf9492 DJ |
1996 | /* FIXME drow/2004-02-22: Why don't we do this for classes, i.e. the |
1997 | cases which do not set PSYM above? */ | |
1998 | ||
e142c38c | 1999 | if (cu->language == language_cplus |
72bf9492 | 2000 | && cu->has_namespace_info == 0 |
5c4e30ca DC |
2001 | && psym != NULL |
2002 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
2003 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
2004 | objfile); | |
72bf9492 DJ |
2005 | |
2006 | if (built_actual_name) | |
2007 | xfree (actual_name); | |
c906108c SS |
2008 | } |
2009 | ||
72bf9492 DJ |
2010 | /* Determine whether a die of type TAG living in a C++ class or |
2011 | namespace needs to have the name of the scope prepended to the | |
63d06c5c DC |
2012 | name listed in the die. */ |
2013 | ||
2014 | static int | |
72bf9492 | 2015 | pdi_needs_namespace (enum dwarf_tag tag) |
63d06c5c | 2016 | { |
63d06c5c DC |
2017 | switch (tag) |
2018 | { | |
72bf9492 | 2019 | case DW_TAG_namespace: |
63d06c5c DC |
2020 | case DW_TAG_typedef: |
2021 | case DW_TAG_class_type: | |
2022 | case DW_TAG_structure_type: | |
2023 | case DW_TAG_union_type: | |
2024 | case DW_TAG_enumeration_type: | |
2025 | case DW_TAG_enumerator: | |
2026 | return 1; | |
2027 | default: | |
2028 | return 0; | |
2029 | } | |
2030 | } | |
2031 | ||
5c4e30ca DC |
2032 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2033 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2034 | the name of the enclosing namespace. */ | |
91c24f0a | 2035 | |
72bf9492 DJ |
2036 | static void |
2037 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2038 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
72bf9492 | 2039 | struct dwarf2_cu *cu) |
91c24f0a | 2040 | { |
e7c27a73 | 2041 | struct objfile *objfile = cu->objfile; |
5c4e30ca | 2042 | |
72bf9492 | 2043 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2044 | |
72bf9492 | 2045 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2046 | |
2047 | /* Now scan partial symbols in that namespace. */ | |
2048 | ||
91c24f0a | 2049 | if (pdi->has_children) |
72bf9492 | 2050 | scan_partial_symbols (pdi->die_child, lowpc, highpc, cu); |
91c24f0a DC |
2051 | } |
2052 | ||
72bf9492 DJ |
2053 | /* See if we can figure out if the class lives in a namespace. We do |
2054 | this by looking for a member function; its demangled name will | |
2055 | contain namespace info, if there is any. */ | |
63d06c5c | 2056 | |
72bf9492 DJ |
2057 | static void |
2058 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2059 | struct dwarf2_cu *cu) | |
63d06c5c | 2060 | { |
987504bb JJ |
2061 | if ((cu->language == language_cplus |
2062 | || cu->language == language_java) | |
72bf9492 | 2063 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2064 | && struct_pdi->has_children) |
2065 | { | |
63d06c5c DC |
2066 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2067 | what template types look like, because the demangler | |
2068 | frequently doesn't give the same name as the debug info. We | |
2069 | could fix this by only using the demangled name to get the | |
134d01f1 | 2070 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2071 | |
72bf9492 DJ |
2072 | struct partial_die_info *child_pdi = struct_pdi->die_child; |
2073 | struct partial_die_info *real_pdi; | |
5d51ca54 | 2074 | |
72bf9492 DJ |
2075 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2076 | we should not do this. We'll prepend the parent's fully qualified | |
2077 | name when we create the partial symbol. */ | |
5d51ca54 | 2078 | |
72bf9492 | 2079 | real_pdi = struct_pdi; |
72bf9492 | 2080 | while (real_pdi->has_specification) |
10b3939b | 2081 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2082 | |
72bf9492 DJ |
2083 | if (real_pdi->die_parent != NULL) |
2084 | return; | |
63d06c5c | 2085 | |
72bf9492 DJ |
2086 | while (child_pdi != NULL) |
2087 | { | |
2088 | if (child_pdi->tag == DW_TAG_subprogram) | |
63d06c5c | 2089 | { |
72bf9492 | 2090 | char *actual_class_name |
31c27f77 JJ |
2091 | = language_class_name_from_physname (cu->language_defn, |
2092 | child_pdi->name); | |
63d06c5c | 2093 | if (actual_class_name != NULL) |
72bf9492 DJ |
2094 | { |
2095 | struct_pdi->name | |
2096 | = obsavestring (actual_class_name, | |
2097 | strlen (actual_class_name), | |
2098 | &cu->comp_unit_obstack); | |
2099 | xfree (actual_class_name); | |
2100 | } | |
63d06c5c DC |
2101 | break; |
2102 | } | |
72bf9492 DJ |
2103 | |
2104 | child_pdi = child_pdi->die_sibling; | |
63d06c5c DC |
2105 | } |
2106 | } | |
63d06c5c DC |
2107 | } |
2108 | ||
91c24f0a DC |
2109 | /* Read a partial die corresponding to an enumeration type. */ |
2110 | ||
72bf9492 DJ |
2111 | static void |
2112 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2113 | struct dwarf2_cu *cu) | |
91c24f0a | 2114 | { |
e7c27a73 | 2115 | struct objfile *objfile = cu->objfile; |
91c24f0a | 2116 | bfd *abfd = objfile->obfd; |
72bf9492 | 2117 | struct partial_die_info *pdi; |
91c24f0a DC |
2118 | |
2119 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2120 | add_partial_symbol (enum_pdi, cu); |
2121 | ||
2122 | pdi = enum_pdi->die_child; | |
2123 | while (pdi) | |
91c24f0a | 2124 | { |
72bf9492 | 2125 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
91c24f0a DC |
2126 | complaint (&symfile_complaints, "malformed enumerator DIE ignored"); |
2127 | else | |
72bf9492 DJ |
2128 | add_partial_symbol (pdi, cu); |
2129 | pdi = pdi->die_sibling; | |
91c24f0a | 2130 | } |
91c24f0a DC |
2131 | } |
2132 | ||
4bb7a0a7 DJ |
2133 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2134 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2135 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2136 | the initial number. */ | |
2137 | ||
2138 | static struct abbrev_info * | |
2139 | peek_die_abbrev (char *info_ptr, int *bytes_read, struct dwarf2_cu *cu) | |
2140 | { | |
2141 | bfd *abfd = cu->objfile->obfd; | |
2142 | unsigned int abbrev_number; | |
2143 | struct abbrev_info *abbrev; | |
2144 | ||
2145 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2146 | ||
2147 | if (abbrev_number == 0) | |
2148 | return NULL; | |
2149 | ||
2150 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2151 | if (!abbrev) | |
2152 | { | |
2153 | error ("Dwarf Error: Could not find abbrev number %d [in module %s]", abbrev_number, | |
2154 | bfd_get_filename (abfd)); | |
2155 | } | |
2156 | ||
2157 | return abbrev; | |
2158 | } | |
2159 | ||
2160 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
2161 | pointer to the end of a series of DIEs, terminated by an empty | |
2162 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
2163 | ||
2164 | static char * | |
2165 | skip_children (char *info_ptr, struct dwarf2_cu *cu) | |
2166 | { | |
2167 | struct abbrev_info *abbrev; | |
2168 | unsigned int bytes_read; | |
2169 | ||
2170 | while (1) | |
2171 | { | |
2172 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2173 | if (abbrev == NULL) | |
2174 | return info_ptr + bytes_read; | |
2175 | else | |
2176 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
2177 | } | |
2178 | } | |
2179 | ||
2180 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
2181 | should point just after the initial uleb128 of a DIE, and the | |
2182 | abbrev corresponding to that skipped uleb128 should be passed in | |
2183 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2184 | children. */ | |
2185 | ||
2186 | static char * | |
2187 | skip_one_die (char *info_ptr, struct abbrev_info *abbrev, | |
2188 | struct dwarf2_cu *cu) | |
2189 | { | |
2190 | unsigned int bytes_read; | |
2191 | struct attribute attr; | |
2192 | bfd *abfd = cu->objfile->obfd; | |
2193 | unsigned int form, i; | |
2194 | ||
2195 | for (i = 0; i < abbrev->num_attrs; i++) | |
2196 | { | |
2197 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2198 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2199 | { | |
2200 | read_attribute (&attr, &abbrev->attrs[i], | |
2201 | abfd, info_ptr, cu); | |
2202 | if (attr.form == DW_FORM_ref_addr) | |
2203 | complaint (&symfile_complaints, "ignoring absolute DW_AT_sibling"); | |
2204 | else | |
6502dd73 DJ |
2205 | return dwarf2_per_objfile->info_buffer |
2206 | + dwarf2_get_ref_die_offset (&attr, cu); | |
4bb7a0a7 DJ |
2207 | } |
2208 | ||
2209 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2210 | form = abbrev->attrs[i].form; | |
2211 | skip_attribute: | |
2212 | switch (form) | |
2213 | { | |
2214 | case DW_FORM_addr: | |
2215 | case DW_FORM_ref_addr: | |
2216 | info_ptr += cu->header.addr_size; | |
2217 | break; | |
2218 | case DW_FORM_data1: | |
2219 | case DW_FORM_ref1: | |
2220 | case DW_FORM_flag: | |
2221 | info_ptr += 1; | |
2222 | break; | |
2223 | case DW_FORM_data2: | |
2224 | case DW_FORM_ref2: | |
2225 | info_ptr += 2; | |
2226 | break; | |
2227 | case DW_FORM_data4: | |
2228 | case DW_FORM_ref4: | |
2229 | info_ptr += 4; | |
2230 | break; | |
2231 | case DW_FORM_data8: | |
2232 | case DW_FORM_ref8: | |
2233 | info_ptr += 8; | |
2234 | break; | |
2235 | case DW_FORM_string: | |
2236 | read_string (abfd, info_ptr, &bytes_read); | |
2237 | info_ptr += bytes_read; | |
2238 | break; | |
2239 | case DW_FORM_strp: | |
2240 | info_ptr += cu->header.offset_size; | |
2241 | break; | |
2242 | case DW_FORM_block: | |
2243 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2244 | info_ptr += bytes_read; | |
2245 | break; | |
2246 | case DW_FORM_block1: | |
2247 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2248 | break; | |
2249 | case DW_FORM_block2: | |
2250 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2251 | break; | |
2252 | case DW_FORM_block4: | |
2253 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2254 | break; | |
2255 | case DW_FORM_sdata: | |
2256 | case DW_FORM_udata: | |
2257 | case DW_FORM_ref_udata: | |
2258 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2259 | break; | |
2260 | case DW_FORM_indirect: | |
2261 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2262 | info_ptr += bytes_read; | |
2263 | /* We need to continue parsing from here, so just go back to | |
2264 | the top. */ | |
2265 | goto skip_attribute; | |
2266 | ||
2267 | default: | |
2268 | error ("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]", | |
2269 | dwarf_form_name (form), | |
2270 | bfd_get_filename (abfd)); | |
2271 | } | |
2272 | } | |
2273 | ||
2274 | if (abbrev->has_children) | |
2275 | return skip_children (info_ptr, cu); | |
2276 | else | |
2277 | return info_ptr; | |
2278 | } | |
2279 | ||
2280 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
2281 | the next DIE after ORIG_PDI. */ | |
91c24f0a DC |
2282 | |
2283 | static char * | |
2284 | locate_pdi_sibling (struct partial_die_info *orig_pdi, char *info_ptr, | |
e7c27a73 | 2285 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2286 | { |
2287 | /* Do we know the sibling already? */ | |
72bf9492 | 2288 | |
91c24f0a DC |
2289 | if (orig_pdi->sibling) |
2290 | return orig_pdi->sibling; | |
2291 | ||
2292 | /* Are there any children to deal with? */ | |
2293 | ||
2294 | if (!orig_pdi->has_children) | |
2295 | return info_ptr; | |
2296 | ||
4bb7a0a7 | 2297 | /* Skip the children the long way. */ |
91c24f0a | 2298 | |
4bb7a0a7 | 2299 | return skip_children (info_ptr, cu); |
91c24f0a DC |
2300 | } |
2301 | ||
c906108c SS |
2302 | /* Expand this partial symbol table into a full symbol table. */ |
2303 | ||
2304 | static void | |
fba45db2 | 2305 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2306 | { |
2307 | /* FIXME: This is barely more than a stub. */ | |
2308 | if (pst != NULL) | |
2309 | { | |
2310 | if (pst->readin) | |
2311 | { | |
2312 | warning ("bug: psymtab for %s is already read in.", pst->filename); | |
2313 | } | |
2314 | else | |
2315 | { | |
2316 | if (info_verbose) | |
2317 | { | |
2318 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
2319 | gdb_flush (gdb_stdout); | |
2320 | } | |
2321 | ||
10b3939b DJ |
2322 | /* Restore our global data. */ |
2323 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2324 | dwarf2_objfile_data_key); | |
2325 | ||
c906108c SS |
2326 | psymtab_to_symtab_1 (pst); |
2327 | ||
2328 | /* Finish up the debug error message. */ | |
2329 | if (info_verbose) | |
2330 | printf_filtered ("done.\n"); | |
2331 | } | |
2332 | } | |
2333 | } | |
2334 | ||
10b3939b DJ |
2335 | /* Add PER_CU to the queue. */ |
2336 | ||
2337 | static void | |
2338 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2339 | { | |
2340 | struct dwarf2_queue_item *item; | |
2341 | ||
2342 | per_cu->queued = 1; | |
2343 | item = xmalloc (sizeof (*item)); | |
2344 | item->per_cu = per_cu; | |
2345 | item->next = NULL; | |
2346 | ||
2347 | if (dwarf2_queue == NULL) | |
2348 | dwarf2_queue = item; | |
2349 | else | |
2350 | dwarf2_queue_tail->next = item; | |
2351 | ||
2352 | dwarf2_queue_tail = item; | |
2353 | } | |
2354 | ||
2355 | /* Process the queue. */ | |
2356 | ||
2357 | static void | |
2358 | process_queue (struct objfile *objfile) | |
2359 | { | |
2360 | struct dwarf2_queue_item *item, *next_item; | |
2361 | ||
2362 | /* Initially, there is just one item on the queue. Load its DIEs, | |
2363 | and the DIEs of any other compilation units it requires, | |
2364 | transitively. */ | |
2365 | ||
2366 | for (item = dwarf2_queue; item != NULL; item = item->next) | |
2367 | { | |
2368 | /* Read in this compilation unit. This may add new items to | |
2369 | the end of the queue. */ | |
2370 | load_full_comp_unit (item->per_cu); | |
2371 | ||
2372 | item->per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
2373 | dwarf2_per_objfile->read_in_chain = item->per_cu; | |
2374 | ||
2375 | /* If this compilation unit has already had full symbols created, | |
2376 | reset the TYPE fields in each DIE. */ | |
2377 | if (item->per_cu->psymtab->readin) | |
2378 | reset_die_and_siblings_types (item->per_cu->cu->dies, | |
2379 | item->per_cu->cu); | |
2380 | } | |
2381 | ||
2382 | /* Now everything left on the queue needs to be read in. Process | |
2383 | them, one at a time, removing from the queue as we finish. */ | |
2384 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) | |
2385 | { | |
2386 | if (!item->per_cu->psymtab->readin) | |
2387 | process_full_comp_unit (item->per_cu); | |
2388 | ||
2389 | item->per_cu->queued = 0; | |
2390 | next_item = item->next; | |
2391 | xfree (item); | |
2392 | } | |
2393 | ||
2394 | dwarf2_queue_tail = NULL; | |
2395 | } | |
2396 | ||
2397 | /* Free all allocated queue entries. This function only releases anything if | |
2398 | an error was thrown; if the queue was processed then it would have been | |
2399 | freed as we went along. */ | |
2400 | ||
2401 | static void | |
2402 | dwarf2_release_queue (void *dummy) | |
2403 | { | |
2404 | struct dwarf2_queue_item *item, *last; | |
2405 | ||
2406 | item = dwarf2_queue; | |
2407 | while (item) | |
2408 | { | |
2409 | /* Anything still marked queued is likely to be in an | |
2410 | inconsistent state, so discard it. */ | |
2411 | if (item->per_cu->queued) | |
2412 | { | |
2413 | if (item->per_cu->cu != NULL) | |
2414 | free_one_cached_comp_unit (item->per_cu->cu); | |
2415 | item->per_cu->queued = 0; | |
2416 | } | |
2417 | ||
2418 | last = item; | |
2419 | item = item->next; | |
2420 | xfree (last); | |
2421 | } | |
2422 | ||
2423 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2424 | } | |
2425 | ||
2426 | /* Read in full symbols for PST, and anything it depends on. */ | |
2427 | ||
c906108c | 2428 | static void |
fba45db2 | 2429 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 2430 | { |
10b3939b | 2431 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 2432 | struct cleanup *back_to; |
aaa75496 JB |
2433 | int i; |
2434 | ||
2435 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2436 | if (!pst->dependencies[i]->readin) | |
2437 | { | |
2438 | /* Inform about additional files that need to be read in. */ | |
2439 | if (info_verbose) | |
2440 | { | |
2441 | fputs_filtered (" ", gdb_stdout); | |
2442 | wrap_here (""); | |
2443 | fputs_filtered ("and ", gdb_stdout); | |
2444 | wrap_here (""); | |
2445 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
2446 | wrap_here (""); /* Flush output */ | |
2447 | gdb_flush (gdb_stdout); | |
2448 | } | |
2449 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
2450 | } | |
2451 | ||
10b3939b DJ |
2452 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
2453 | ||
2454 | if (per_cu == NULL) | |
aaa75496 JB |
2455 | { |
2456 | /* It's an include file, no symbols to read for it. | |
2457 | Everything is in the parent symtab. */ | |
2458 | pst->readin = 1; | |
2459 | return; | |
2460 | } | |
c906108c | 2461 | |
10b3939b DJ |
2462 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2463 | ||
2464 | queue_comp_unit (per_cu); | |
2465 | ||
2466 | process_queue (pst->objfile); | |
2467 | ||
2468 | /* Age the cache, releasing compilation units that have not | |
2469 | been used recently. */ | |
2470 | age_cached_comp_units (); | |
2471 | ||
2472 | do_cleanups (back_to); | |
2473 | } | |
2474 | ||
2475 | /* Load the DIEs associated with PST and PER_CU into memory. */ | |
2476 | ||
2477 | static struct dwarf2_cu * | |
2478 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2479 | { | |
2480 | struct partial_symtab *pst = per_cu->psymtab; | |
2481 | bfd *abfd = pst->objfile->obfd; | |
2482 | struct dwarf2_cu *cu; | |
2483 | unsigned long offset; | |
2484 | char *info_ptr; | |
2485 | struct cleanup *back_to, *free_cu_cleanup; | |
2486 | struct attribute *attr; | |
2487 | CORE_ADDR baseaddr; | |
6502dd73 | 2488 | |
c906108c | 2489 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 2490 | offset = per_cu->offset; |
6502dd73 DJ |
2491 | |
2492 | info_ptr = dwarf2_per_objfile->info_buffer + offset; | |
63d06c5c | 2493 | |
10b3939b DJ |
2494 | cu = xmalloc (sizeof (struct dwarf2_cu)); |
2495 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
c906108c | 2496 | |
10b3939b DJ |
2497 | /* If an error occurs while loading, release our storage. */ |
2498 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 2499 | |
10b3939b | 2500 | cu->objfile = pst->objfile; |
e7c27a73 | 2501 | |
c906108c | 2502 | /* read in the comp_unit header */ |
10b3939b | 2503 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c SS |
2504 | |
2505 | /* Read the abbrevs for this compilation unit */ | |
10b3939b DJ |
2506 | dwarf2_read_abbrevs (abfd, cu); |
2507 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2508 | ||
2509 | cu->header.offset = offset; | |
c906108c | 2510 | |
10b3939b DJ |
2511 | cu->per_cu = per_cu; |
2512 | per_cu->cu = cu; | |
e142c38c | 2513 | |
10b3939b DJ |
2514 | /* We use this obstack for block values in dwarf_alloc_block. */ |
2515 | obstack_init (&cu->comp_unit_obstack); | |
2516 | ||
2517 | cu->dies = read_comp_unit (info_ptr, abfd, cu); | |
2518 | ||
2519 | /* We try not to read any attributes in this function, because not | |
2520 | all objfiles needed for references have been loaded yet, and symbol | |
2521 | table processing isn't initialized. But we have to set the CU language, | |
2522 | or we won't be able to build types correctly. */ | |
2523 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
2524 | if (attr) | |
2525 | set_cu_language (DW_UNSND (attr), cu); | |
2526 | else | |
2527 | set_cu_language (language_minimal, cu); | |
2528 | ||
2529 | do_cleanups (back_to); | |
e142c38c | 2530 | |
10b3939b DJ |
2531 | /* We've successfully allocated this compilation unit. Let our caller |
2532 | clean it up when finished with it. */ | |
2533 | discard_cleanups (free_cu_cleanup); | |
c906108c | 2534 | |
10b3939b DJ |
2535 | return cu; |
2536 | } | |
2537 | ||
2538 | /* Generate full symbol information for PST and CU, whose DIEs have | |
2539 | already been loaded into memory. */ | |
2540 | ||
2541 | static void | |
2542 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2543 | { | |
2544 | struct partial_symtab *pst = per_cu->psymtab; | |
2545 | struct dwarf2_cu *cu = per_cu->cu; | |
2546 | struct objfile *objfile = pst->objfile; | |
2547 | bfd *abfd = objfile->obfd; | |
2548 | CORE_ADDR lowpc, highpc; | |
2549 | struct symtab *symtab; | |
2550 | struct cleanup *back_to; | |
2551 | struct attribute *attr; | |
2552 | CORE_ADDR baseaddr; | |
2553 | ||
2554 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2555 | ||
2556 | /* We're in the global namespace. */ | |
2557 | processing_current_prefix = ""; | |
2558 | ||
2559 | buildsym_init (); | |
2560 | back_to = make_cleanup (really_free_pendings, NULL); | |
2561 | ||
2562 | cu->list_in_scope = &file_symbols; | |
c906108c | 2563 | |
0d53c4c4 DJ |
2564 | /* Find the base address of the compilation unit for range lists and |
2565 | location lists. It will normally be specified by DW_AT_low_pc. | |
2566 | In DWARF-3 draft 4, the base address could be overridden by | |
2567 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2568 | compilation units with discontinuous ranges. */ | |
2569 | ||
10b3939b DJ |
2570 | cu->header.base_known = 0; |
2571 | cu->header.base_address = 0; | |
0d53c4c4 | 2572 | |
10b3939b | 2573 | attr = dwarf2_attr (cu->dies, DW_AT_entry_pc, cu); |
0d53c4c4 DJ |
2574 | if (attr) |
2575 | { | |
10b3939b DJ |
2576 | cu->header.base_address = DW_ADDR (attr); |
2577 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2578 | } |
2579 | else | |
2580 | { | |
10b3939b | 2581 | attr = dwarf2_attr (cu->dies, DW_AT_low_pc, cu); |
0d53c4c4 DJ |
2582 | if (attr) |
2583 | { | |
10b3939b DJ |
2584 | cu->header.base_address = DW_ADDR (attr); |
2585 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2586 | } |
2587 | } | |
2588 | ||
c906108c | 2589 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 2590 | process_die (cu->dies, cu); |
c906108c | 2591 | |
fae299cd DC |
2592 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
2593 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
2594 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 2595 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 2596 | |
613e1657 | 2597 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2598 | |
2599 | /* Set symtab language to language from DW_AT_language. | |
2600 | If the compilation is from a C file generated by language preprocessors, | |
2601 | do not set the language if it was already deduced by start_subfile. */ | |
2602 | if (symtab != NULL | |
10b3939b | 2603 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 2604 | { |
10b3939b | 2605 | symtab->language = cu->language; |
c906108c SS |
2606 | } |
2607 | pst->symtab = symtab; | |
2608 | pst->readin = 1; | |
c906108c SS |
2609 | |
2610 | do_cleanups (back_to); | |
2611 | } | |
2612 | ||
2613 | /* Process a die and its children. */ | |
2614 | ||
2615 | static void | |
e7c27a73 | 2616 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2617 | { |
2618 | switch (die->tag) | |
2619 | { | |
2620 | case DW_TAG_padding: | |
2621 | break; | |
2622 | case DW_TAG_compile_unit: | |
e7c27a73 | 2623 | read_file_scope (die, cu); |
c906108c SS |
2624 | break; |
2625 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
2626 | read_subroutine_type (die, cu); |
2627 | read_func_scope (die, cu); | |
c906108c SS |
2628 | break; |
2629 | case DW_TAG_inlined_subroutine: | |
2630 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2631 | They could be used to set breakpoints on all inlined instances |
2632 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2633 | break; |
2634 | case DW_TAG_lexical_block: | |
14898363 L |
2635 | case DW_TAG_try_block: |
2636 | case DW_TAG_catch_block: | |
e7c27a73 | 2637 | read_lexical_block_scope (die, cu); |
c906108c SS |
2638 | break; |
2639 | case DW_TAG_class_type: | |
2640 | case DW_TAG_structure_type: | |
2641 | case DW_TAG_union_type: | |
134d01f1 DJ |
2642 | read_structure_type (die, cu); |
2643 | process_structure_scope (die, cu); | |
c906108c SS |
2644 | break; |
2645 | case DW_TAG_enumeration_type: | |
134d01f1 DJ |
2646 | read_enumeration_type (die, cu); |
2647 | process_enumeration_scope (die, cu); | |
c906108c | 2648 | break; |
134d01f1 DJ |
2649 | |
2650 | /* FIXME drow/2004-03-14: These initialize die->type, but do not create | |
2651 | a symbol or process any children. Therefore it doesn't do anything | |
2652 | that won't be done on-demand by read_type_die. */ | |
c906108c | 2653 | case DW_TAG_subroutine_type: |
e7c27a73 | 2654 | read_subroutine_type (die, cu); |
c906108c SS |
2655 | break; |
2656 | case DW_TAG_array_type: | |
e7c27a73 | 2657 | read_array_type (die, cu); |
c906108c SS |
2658 | break; |
2659 | case DW_TAG_pointer_type: | |
e7c27a73 | 2660 | read_tag_pointer_type (die, cu); |
c906108c SS |
2661 | break; |
2662 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 2663 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
2664 | break; |
2665 | case DW_TAG_reference_type: | |
e7c27a73 | 2666 | read_tag_reference_type (die, cu); |
c906108c SS |
2667 | break; |
2668 | case DW_TAG_string_type: | |
e7c27a73 | 2669 | read_tag_string_type (die, cu); |
c906108c | 2670 | break; |
134d01f1 DJ |
2671 | /* END FIXME */ |
2672 | ||
c906108c | 2673 | case DW_TAG_base_type: |
e7c27a73 | 2674 | read_base_type (die, cu); |
134d01f1 DJ |
2675 | /* Add a typedef symbol for the type definition, if it has a |
2676 | DW_AT_name. */ | |
2677 | new_symbol (die, die->type, cu); | |
c906108c | 2678 | break; |
a02abb62 JB |
2679 | case DW_TAG_subrange_type: |
2680 | read_subrange_type (die, cu); | |
134d01f1 DJ |
2681 | /* Add a typedef symbol for the type definition, if it has a |
2682 | DW_AT_name. */ | |
2683 | new_symbol (die, die->type, cu); | |
a02abb62 | 2684 | break; |
c906108c | 2685 | case DW_TAG_common_block: |
e7c27a73 | 2686 | read_common_block (die, cu); |
c906108c SS |
2687 | break; |
2688 | case DW_TAG_common_inclusion: | |
2689 | break; | |
d9fa45fe | 2690 | case DW_TAG_namespace: |
63d06c5c | 2691 | processing_has_namespace_info = 1; |
e7c27a73 | 2692 | read_namespace (die, cu); |
d9fa45fe DC |
2693 | break; |
2694 | case DW_TAG_imported_declaration: | |
2695 | case DW_TAG_imported_module: | |
2696 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2697 | information contained in these. DW_TAG_imported_declaration | |
2698 | dies shouldn't have children; DW_TAG_imported_module dies | |
2699 | shouldn't in the C++ case, but conceivably could in the | |
2700 | Fortran case, so we'll have to replace this gdb_assert if | |
2701 | Fortran compilers start generating that info. */ | |
63d06c5c | 2702 | processing_has_namespace_info = 1; |
639d11d3 | 2703 | gdb_assert (die->child == NULL); |
d9fa45fe | 2704 | break; |
c906108c | 2705 | default: |
e7c27a73 | 2706 | new_symbol (die, NULL, cu); |
c906108c SS |
2707 | break; |
2708 | } | |
2709 | } | |
2710 | ||
5fb290d7 | 2711 | static void |
e142c38c | 2712 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2713 | { |
e142c38c | 2714 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2715 | } |
2716 | ||
c906108c | 2717 | static void |
e7c27a73 | 2718 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2719 | { |
e7c27a73 DJ |
2720 | struct objfile *objfile = cu->objfile; |
2721 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2722 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2723 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2724 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2725 | struct attribute *attr; | |
2726 | char *name = "<unknown>"; | |
2727 | char *comp_dir = NULL; | |
2728 | struct die_info *child_die; | |
2729 | bfd *abfd = objfile->obfd; | |
debd256d | 2730 | struct line_header *line_header = 0; |
e142c38c DJ |
2731 | CORE_ADDR baseaddr; |
2732 | ||
2733 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2734 | |
fae299cd | 2735 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2736 | |
2737 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2738 | from finish_block. */ | |
2acceee2 | 2739 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2740 | lowpc = highpc; |
2741 | lowpc += baseaddr; | |
2742 | highpc += baseaddr; | |
2743 | ||
e142c38c | 2744 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2745 | if (attr) |
2746 | { | |
2747 | name = DW_STRING (attr); | |
2748 | } | |
e142c38c | 2749 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c SS |
2750 | if (attr) |
2751 | { | |
2752 | comp_dir = DW_STRING (attr); | |
2753 | if (comp_dir) | |
2754 | { | |
2755 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2756 | directory, get rid of it. */ | |
2757 | char *cp = strchr (comp_dir, ':'); | |
2758 | ||
2759 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
2760 | comp_dir = cp + 1; | |
2761 | } | |
2762 | } | |
2763 | ||
e142c38c | 2764 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2765 | if (attr) |
2766 | { | |
e142c38c | 2767 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2768 | } |
2769 | ||
b0f35d58 DL |
2770 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
2771 | if (attr) | |
2772 | cu->producer = DW_STRING (attr); | |
2773 | ||
c906108c SS |
2774 | /* We assume that we're processing GCC output. */ |
2775 | processing_gcc_compilation = 2; | |
2776 | #if 0 | |
c5aa993b JM |
2777 | /* FIXME:Do something here. */ |
2778 | if (dip->at_producer != NULL) | |
c906108c SS |
2779 | { |
2780 | handle_producer (dip->at_producer); | |
2781 | } | |
2782 | #endif | |
2783 | ||
2784 | /* The compilation unit may be in a different language or objfile, | |
2785 | zero out all remembered fundamental types. */ | |
e142c38c | 2786 | memset (cu->ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *)); |
c906108c SS |
2787 | |
2788 | start_symtab (name, comp_dir, lowpc); | |
2789 | record_debugformat ("DWARF 2"); | |
2790 | ||
e142c38c | 2791 | initialize_cu_func_list (cu); |
c906108c SS |
2792 | |
2793 | /* Process all dies in compilation unit. */ | |
639d11d3 | 2794 | if (die->child != NULL) |
c906108c | 2795 | { |
639d11d3 | 2796 | child_die = die->child; |
c906108c SS |
2797 | while (child_die && child_die->tag) |
2798 | { | |
e7c27a73 | 2799 | process_die (child_die, cu); |
c906108c SS |
2800 | child_die = sibling_die (child_die); |
2801 | } | |
2802 | } | |
5fb290d7 DJ |
2803 | |
2804 | /* Decode line number information if present. */ | |
e142c38c | 2805 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2806 | if (attr) |
2807 | { | |
debd256d | 2808 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2809 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2810 | if (line_header) |
2811 | { | |
2812 | make_cleanup ((make_cleanup_ftype *) free_line_header, | |
2813 | (void *) line_header); | |
aaa75496 | 2814 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 2815 | } |
5fb290d7 | 2816 | } |
debd256d | 2817 | |
2e276125 JB |
2818 | /* Decode macro information, if present. Dwarf 2 macro information |
2819 | refers to information in the line number info statement program | |
2820 | header, so we can only read it if we've read the header | |
2821 | successfully. */ | |
e142c38c | 2822 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2823 | if (attr && line_header) |
2e276125 JB |
2824 | { |
2825 | unsigned int macro_offset = DW_UNSND (attr); | |
2826 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2827 | comp_dir, abfd, cu); |
2e276125 | 2828 | } |
debd256d | 2829 | do_cleanups (back_to); |
5fb290d7 DJ |
2830 | } |
2831 | ||
2832 | static void | |
e142c38c DJ |
2833 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2834 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2835 | { |
2836 | struct function_range *thisfn; | |
2837 | ||
2838 | thisfn = (struct function_range *) | |
7b5a2f43 | 2839 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
2840 | thisfn->name = name; |
2841 | thisfn->lowpc = lowpc; | |
2842 | thisfn->highpc = highpc; | |
2843 | thisfn->seen_line = 0; | |
2844 | thisfn->next = NULL; | |
2845 | ||
e142c38c DJ |
2846 | if (cu->last_fn == NULL) |
2847 | cu->first_fn = thisfn; | |
5fb290d7 | 2848 | else |
e142c38c | 2849 | cu->last_fn->next = thisfn; |
5fb290d7 | 2850 | |
e142c38c | 2851 | cu->last_fn = thisfn; |
c906108c SS |
2852 | } |
2853 | ||
2854 | static void | |
e7c27a73 | 2855 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2856 | { |
e7c27a73 | 2857 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2858 | struct context_stack *new; |
c906108c SS |
2859 | CORE_ADDR lowpc; |
2860 | CORE_ADDR highpc; | |
2861 | struct die_info *child_die; | |
2862 | struct attribute *attr; | |
2863 | char *name; | |
fdde2d81 DC |
2864 | const char *previous_prefix = processing_current_prefix; |
2865 | struct cleanup *back_to = NULL; | |
e142c38c | 2866 | CORE_ADDR baseaddr; |
c906108c | 2867 | |
e142c38c DJ |
2868 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2869 | ||
2870 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2871 | |
2872 | /* Ignore functions with missing or empty names and functions with | |
2873 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2874 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2875 | return; |
2876 | ||
987504bb JJ |
2877 | if (cu->language == language_cplus |
2878 | || cu->language == language_java) | |
fdde2d81 | 2879 | { |
086ed43d | 2880 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2881 | |
2a35147e JB |
2882 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2883 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2884 | given the code | |
2885 | ||
2886 | namespace N { | |
2887 | void foo() { | |
2888 | // Definition of N::foo. | |
2889 | } | |
2890 | } | |
2891 | ||
2892 | then we'll have a tree of DIEs like this: | |
2893 | ||
2894 | 1: DW_TAG_compile_unit | |
2895 | 2: DW_TAG_namespace // N | |
2896 | 3: DW_TAG_subprogram // declaration of N::foo | |
2897 | 4: DW_TAG_subprogram // definition of N::foo | |
2898 | DW_AT_specification // refers to die #3 | |
2899 | ||
2900 | Thus, when processing die #4, we have to pretend that we're | |
2901 | in the context of its DW_AT_specification, namely the contex | |
2902 | of die #3. */ | |
fdde2d81 DC |
2903 | |
2904 | if (spec_die != NULL) | |
2905 | { | |
e142c38c | 2906 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
2907 | processing_current_prefix = specification_prefix; |
2908 | back_to = make_cleanup (xfree, specification_prefix); | |
2909 | } | |
2910 | } | |
2911 | ||
c906108c SS |
2912 | lowpc += baseaddr; |
2913 | highpc += baseaddr; | |
2914 | ||
5fb290d7 | 2915 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 2916 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 2917 | |
c906108c | 2918 | new = push_context (0, lowpc); |
e7c27a73 | 2919 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 2920 | |
4cecd739 DJ |
2921 | /* If there is a location expression for DW_AT_frame_base, record |
2922 | it. */ | |
e142c38c | 2923 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 2924 | if (attr) |
c034e007 AC |
2925 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
2926 | expression is being recorded directly in the function's symbol | |
2927 | and not in a separate frame-base object. I guess this hack is | |
2928 | to avoid adding some sort of frame-base adjunct/annex to the | |
2929 | function's symbol :-(. The problem with doing this is that it | |
2930 | results in a function symbol with a location expression that | |
2931 | has nothing to do with the location of the function, ouch! The | |
2932 | relationship should be: a function's symbol has-a frame base; a | |
2933 | frame-base has-a location expression. */ | |
e7c27a73 | 2934 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 2935 | |
e142c38c | 2936 | cu->list_in_scope = &local_symbols; |
c906108c | 2937 | |
639d11d3 | 2938 | if (die->child != NULL) |
c906108c | 2939 | { |
639d11d3 | 2940 | child_die = die->child; |
c906108c SS |
2941 | while (child_die && child_die->tag) |
2942 | { | |
e7c27a73 | 2943 | process_die (child_die, cu); |
c906108c SS |
2944 | child_die = sibling_die (child_die); |
2945 | } | |
2946 | } | |
2947 | ||
2948 | new = pop_context (); | |
2949 | /* Make a block for the local symbols within. */ | |
2950 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2951 | lowpc, highpc, objfile); | |
208d8187 JB |
2952 | |
2953 | /* In C++, we can have functions nested inside functions (e.g., when | |
2954 | a function declares a class that has methods). This means that | |
2955 | when we finish processing a function scope, we may need to go | |
2956 | back to building a containing block's symbol lists. */ | |
2957 | local_symbols = new->locals; | |
2958 | param_symbols = new->params; | |
2959 | ||
921e78cf JB |
2960 | /* If we've finished processing a top-level function, subsequent |
2961 | symbols go in the file symbol list. */ | |
2962 | if (outermost_context_p ()) | |
e142c38c | 2963 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
2964 | |
2965 | processing_current_prefix = previous_prefix; | |
2966 | if (back_to != NULL) | |
2967 | do_cleanups (back_to); | |
c906108c SS |
2968 | } |
2969 | ||
2970 | /* Process all the DIES contained within a lexical block scope. Start | |
2971 | a new scope, process the dies, and then close the scope. */ | |
2972 | ||
2973 | static void | |
e7c27a73 | 2974 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2975 | { |
e7c27a73 | 2976 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2977 | struct context_stack *new; |
c906108c SS |
2978 | CORE_ADDR lowpc, highpc; |
2979 | struct die_info *child_die; | |
e142c38c DJ |
2980 | CORE_ADDR baseaddr; |
2981 | ||
2982 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2983 | |
2984 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
2985 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
2986 | as multiple lexical blocks? Handling children in a sane way would | |
2987 | be nasty. Might be easier to properly extend generic blocks to | |
2988 | describe ranges. */ | |
e7c27a73 | 2989 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2990 | return; |
2991 | lowpc += baseaddr; | |
2992 | highpc += baseaddr; | |
2993 | ||
2994 | push_context (0, lowpc); | |
639d11d3 | 2995 | if (die->child != NULL) |
c906108c | 2996 | { |
639d11d3 | 2997 | child_die = die->child; |
c906108c SS |
2998 | while (child_die && child_die->tag) |
2999 | { | |
e7c27a73 | 3000 | process_die (child_die, cu); |
c906108c SS |
3001 | child_die = sibling_die (child_die); |
3002 | } | |
3003 | } | |
3004 | new = pop_context (); | |
3005 | ||
3006 | if (local_symbols != NULL) | |
3007 | { | |
3008 | finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
3009 | highpc, objfile); | |
3010 | } | |
3011 | local_symbols = new->locals; | |
3012 | } | |
3013 | ||
af34e669 DJ |
3014 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
3015 | are present and valid, otherwise, return 0. Return -1 if the range is | |
3016 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 3017 | static int |
af34e669 | 3018 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 3019 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c | 3020 | { |
e7c27a73 DJ |
3021 | struct objfile *objfile = cu->objfile; |
3022 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 3023 | struct attribute *attr; |
af34e669 DJ |
3024 | bfd *obfd = objfile->obfd; |
3025 | CORE_ADDR low = 0; | |
3026 | CORE_ADDR high = 0; | |
3027 | int ret = 0; | |
c906108c | 3028 | |
e142c38c | 3029 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 3030 | if (attr) |
af34e669 DJ |
3031 | { |
3032 | high = DW_ADDR (attr); | |
e142c38c | 3033 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
3034 | if (attr) |
3035 | low = DW_ADDR (attr); | |
3036 | else | |
3037 | /* Found high w/o low attribute. */ | |
3038 | return 0; | |
3039 | ||
3040 | /* Found consecutive range of addresses. */ | |
3041 | ret = 1; | |
3042 | } | |
c906108c | 3043 | else |
af34e669 | 3044 | { |
e142c38c | 3045 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
3046 | if (attr != NULL) |
3047 | { | |
3048 | unsigned int addr_size = cu_header->addr_size; | |
3049 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3050 | /* Value of the DW_AT_ranges attribute is the offset in the | |
a604369a | 3051 | .debug_ranges section. */ |
af34e669 DJ |
3052 | unsigned int offset = DW_UNSND (attr); |
3053 | /* Base address selection entry. */ | |
0d53c4c4 DJ |
3054 | CORE_ADDR base; |
3055 | int found_base; | |
af34e669 | 3056 | int dummy; |
af34e669 DJ |
3057 | char *buffer; |
3058 | CORE_ADDR marker; | |
3059 | int low_set; | |
3060 | ||
0d53c4c4 DJ |
3061 | found_base = cu_header->base_known; |
3062 | base = cu_header->base_address; | |
a604369a | 3063 | |
6502dd73 | 3064 | if (offset >= dwarf2_per_objfile->ranges_size) |
a604369a KB |
3065 | { |
3066 | complaint (&symfile_complaints, | |
3067 | "Offset %d out of bounds for DW_AT_ranges attribute", | |
3068 | offset); | |
3069 | return 0; | |
3070 | } | |
6502dd73 | 3071 | buffer = dwarf2_per_objfile->ranges_buffer + offset; |
af34e669 | 3072 | |
af34e669 | 3073 | /* Read in the largest possible address. */ |
e7c27a73 | 3074 | marker = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
3075 | if ((marker & mask) == mask) |
3076 | { | |
3077 | /* If we found the largest possible address, then | |
3078 | read the base address. */ | |
e7c27a73 | 3079 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
3080 | buffer += 2 * addr_size; |
3081 | offset += 2 * addr_size; | |
3082 | found_base = 1; | |
3083 | } | |
3084 | ||
3085 | low_set = 0; | |
3086 | ||
3087 | while (1) | |
3088 | { | |
3089 | CORE_ADDR range_beginning, range_end; | |
3090 | ||
e7c27a73 | 3091 | range_beginning = read_address (obfd, buffer, cu, &dummy); |
af34e669 | 3092 | buffer += addr_size; |
e7c27a73 | 3093 | range_end = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
3094 | buffer += addr_size; |
3095 | offset += 2 * addr_size; | |
3096 | ||
3097 | /* An end of list marker is a pair of zero addresses. */ | |
3098 | if (range_beginning == 0 && range_end == 0) | |
3099 | /* Found the end of list entry. */ | |
3100 | break; | |
3101 | ||
3102 | /* Each base address selection entry is a pair of 2 values. | |
3103 | The first is the largest possible address, the second is | |
3104 | the base address. Check for a base address here. */ | |
3105 | if ((range_beginning & mask) == mask) | |
3106 | { | |
3107 | /* If we found the largest possible address, then | |
3108 | read the base address. */ | |
e7c27a73 | 3109 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
3110 | found_base = 1; |
3111 | continue; | |
3112 | } | |
3113 | ||
3114 | if (!found_base) | |
3115 | { | |
3116 | /* We have no valid base address for the ranges | |
3117 | data. */ | |
3118 | complaint (&symfile_complaints, | |
3119 | "Invalid .debug_ranges data (no base address)"); | |
3120 | return 0; | |
3121 | } | |
3122 | ||
8f05cde5 DJ |
3123 | range_beginning += base; |
3124 | range_end += base; | |
3125 | ||
af34e669 DJ |
3126 | /* FIXME: This is recording everything as a low-high |
3127 | segment of consecutive addresses. We should have a | |
3128 | data structure for discontiguous block ranges | |
3129 | instead. */ | |
3130 | if (! low_set) | |
3131 | { | |
3132 | low = range_beginning; | |
3133 | high = range_end; | |
3134 | low_set = 1; | |
3135 | } | |
3136 | else | |
3137 | { | |
3138 | if (range_beginning < low) | |
3139 | low = range_beginning; | |
3140 | if (range_end > high) | |
3141 | high = range_end; | |
3142 | } | |
3143 | } | |
3144 | ||
3145 | if (! low_set) | |
3146 | /* If the first entry is an end-of-list marker, the range | |
3147 | describes an empty scope, i.e. no instructions. */ | |
3148 | return 0; | |
3149 | ||
3150 | ret = -1; | |
3151 | } | |
3152 | } | |
c906108c SS |
3153 | |
3154 | if (high < low) | |
3155 | return 0; | |
3156 | ||
3157 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
3158 | eliminate duplicate copies of functions and vtables and such. | |
3159 | The linker will arbitrarily choose one and discard the others. | |
3160 | The AT_*_pc values for such functions refer to local labels in | |
3161 | these sections. If the section from that file was discarded, the | |
3162 | labels are not in the output, so the relocs get a value of 0. | |
3163 | If this is a discarded function, mark the pc bounds as invalid, | |
3164 | so that GDB will ignore it. */ | |
af34e669 | 3165 | if (low == 0 && (bfd_get_file_flags (obfd) & HAS_RELOC) == 0) |
c906108c SS |
3166 | return 0; |
3167 | ||
3168 | *lowpc = low; | |
3169 | *highpc = high; | |
af34e669 | 3170 | return ret; |
c906108c SS |
3171 | } |
3172 | ||
fae299cd DC |
3173 | /* Get the low and high pc's represented by the scope DIE, and store |
3174 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
3175 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
3176 | ||
3177 | static void | |
3178 | get_scope_pc_bounds (struct die_info *die, | |
3179 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3180 | struct dwarf2_cu *cu) | |
3181 | { | |
3182 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
3183 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
3184 | CORE_ADDR current_low, current_high; | |
3185 | ||
3186 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
3187 | { | |
3188 | best_low = current_low; | |
3189 | best_high = current_high; | |
3190 | } | |
3191 | else | |
3192 | { | |
3193 | struct die_info *child = die->child; | |
3194 | ||
3195 | while (child && child->tag) | |
3196 | { | |
3197 | switch (child->tag) { | |
3198 | case DW_TAG_subprogram: | |
3199 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
3200 | { | |
3201 | best_low = min (best_low, current_low); | |
3202 | best_high = max (best_high, current_high); | |
3203 | } | |
3204 | break; | |
3205 | case DW_TAG_namespace: | |
3206 | /* FIXME: carlton/2004-01-16: Should we do this for | |
3207 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
3208 | that current GCC's always emit the DIEs corresponding | |
3209 | to definitions of methods of classes as children of a | |
3210 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
3211 | the DIEs giving the declarations, which could be | |
3212 | anywhere). But I don't see any reason why the | |
3213 | standards says that they have to be there. */ | |
3214 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
3215 | ||
3216 | if (current_low != ((CORE_ADDR) -1)) | |
3217 | { | |
3218 | best_low = min (best_low, current_low); | |
3219 | best_high = max (best_high, current_high); | |
3220 | } | |
3221 | break; | |
3222 | default: | |
3223 | /* Ignore. */ | |
3224 | break; | |
3225 | } | |
3226 | ||
3227 | child = sibling_die (child); | |
3228 | } | |
3229 | } | |
3230 | ||
3231 | *lowpc = best_low; | |
3232 | *highpc = best_high; | |
3233 | } | |
3234 | ||
c906108c SS |
3235 | /* Add an aggregate field to the field list. */ |
3236 | ||
3237 | static void | |
107d2387 | 3238 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
3239 | struct dwarf2_cu *cu) |
3240 | { | |
3241 | struct objfile *objfile = cu->objfile; | |
c906108c SS |
3242 | struct nextfield *new_field; |
3243 | struct attribute *attr; | |
3244 | struct field *fp; | |
3245 | char *fieldname = ""; | |
3246 | ||
3247 | /* Allocate a new field list entry and link it in. */ | |
3248 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3249 | make_cleanup (xfree, new_field); |
c906108c SS |
3250 | memset (new_field, 0, sizeof (struct nextfield)); |
3251 | new_field->next = fip->fields; | |
3252 | fip->fields = new_field; | |
3253 | fip->nfields++; | |
3254 | ||
3255 | /* Handle accessibility and virtuality of field. | |
3256 | The default accessibility for members is public, the default | |
3257 | accessibility for inheritance is private. */ | |
3258 | if (die->tag != DW_TAG_inheritance) | |
3259 | new_field->accessibility = DW_ACCESS_public; | |
3260 | else | |
3261 | new_field->accessibility = DW_ACCESS_private; | |
3262 | new_field->virtuality = DW_VIRTUALITY_none; | |
3263 | ||
e142c38c | 3264 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3265 | if (attr) |
3266 | new_field->accessibility = DW_UNSND (attr); | |
3267 | if (new_field->accessibility != DW_ACCESS_public) | |
3268 | fip->non_public_fields = 1; | |
e142c38c | 3269 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
3270 | if (attr) |
3271 | new_field->virtuality = DW_UNSND (attr); | |
3272 | ||
3273 | fp = &new_field->field; | |
a9a9bd0f | 3274 | |
e142c38c | 3275 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 3276 | { |
a9a9bd0f DC |
3277 | /* Data member other than a C++ static data member. */ |
3278 | ||
c906108c | 3279 | /* Get type of field. */ |
e7c27a73 | 3280 | fp->type = die_type (die, cu); |
c906108c | 3281 | |
01ad7f36 DJ |
3282 | FIELD_STATIC_KIND (*fp) = 0; |
3283 | ||
c906108c | 3284 | /* Get bit size of field (zero if none). */ |
e142c38c | 3285 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
3286 | if (attr) |
3287 | { | |
3288 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
3289 | } | |
3290 | else | |
3291 | { | |
3292 | FIELD_BITSIZE (*fp) = 0; | |
3293 | } | |
3294 | ||
3295 | /* Get bit offset of field. */ | |
e142c38c | 3296 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
3297 | if (attr) |
3298 | { | |
3299 | FIELD_BITPOS (*fp) = | |
e7c27a73 | 3300 | decode_locdesc (DW_BLOCK (attr), cu) * bits_per_byte; |
c906108c SS |
3301 | } |
3302 | else | |
3303 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 3304 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
3305 | if (attr) |
3306 | { | |
3307 | if (BITS_BIG_ENDIAN) | |
3308 | { | |
3309 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
3310 | additional bit offset from the MSB of the containing |
3311 | anonymous object to the MSB of the field. We don't | |
3312 | have to do anything special since we don't need to | |
3313 | know the size of the anonymous object. */ | |
c906108c SS |
3314 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
3315 | } | |
3316 | else | |
3317 | { | |
3318 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
3319 | MSB of the anonymous object, subtract off the number of |
3320 | bits from the MSB of the field to the MSB of the | |
3321 | object, and then subtract off the number of bits of | |
3322 | the field itself. The result is the bit offset of | |
3323 | the LSB of the field. */ | |
c906108c SS |
3324 | int anonymous_size; |
3325 | int bit_offset = DW_UNSND (attr); | |
3326 | ||
e142c38c | 3327 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3328 | if (attr) |
3329 | { | |
3330 | /* The size of the anonymous object containing | |
3331 | the bit field is explicit, so use the | |
3332 | indicated size (in bytes). */ | |
3333 | anonymous_size = DW_UNSND (attr); | |
3334 | } | |
3335 | else | |
3336 | { | |
3337 | /* The size of the anonymous object containing | |
3338 | the bit field must be inferred from the type | |
3339 | attribute of the data member containing the | |
3340 | bit field. */ | |
3341 | anonymous_size = TYPE_LENGTH (fp->type); | |
3342 | } | |
3343 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
3344 | - bit_offset - FIELD_BITSIZE (*fp); | |
3345 | } | |
3346 | } | |
3347 | ||
3348 | /* Get name of field. */ | |
e142c38c | 3349 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3350 | if (attr && DW_STRING (attr)) |
3351 | fieldname = DW_STRING (attr); | |
d8151005 DJ |
3352 | |
3353 | /* The name is already allocated along with this objfile, so we don't | |
3354 | need to duplicate it for the type. */ | |
3355 | fp->name = fieldname; | |
c906108c SS |
3356 | |
3357 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 3358 | pointer or virtual base class pointer) to private. */ |
e142c38c | 3359 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
3360 | { |
3361 | new_field->accessibility = DW_ACCESS_private; | |
3362 | fip->non_public_fields = 1; | |
3363 | } | |
3364 | } | |
a9a9bd0f | 3365 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 3366 | { |
a9a9bd0f DC |
3367 | /* C++ static member. */ |
3368 | ||
3369 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
3370 | is a declaration, but all versions of G++ as of this writing | |
3371 | (so through at least 3.2.1) incorrectly generate | |
3372 | DW_TAG_variable tags. */ | |
3373 | ||
c906108c | 3374 | char *physname; |
c906108c | 3375 | |
a9a9bd0f | 3376 | /* Get name of field. */ |
e142c38c | 3377 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
3378 | if (attr && DW_STRING (attr)) |
3379 | fieldname = DW_STRING (attr); | |
3380 | else | |
c906108c SS |
3381 | return; |
3382 | ||
2df3850c | 3383 | /* Get physical name. */ |
e142c38c | 3384 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 3385 | |
d8151005 DJ |
3386 | /* The name is already allocated along with this objfile, so we don't |
3387 | need to duplicate it for the type. */ | |
3388 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 3389 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 3390 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
3391 | } |
3392 | else if (die->tag == DW_TAG_inheritance) | |
3393 | { | |
3394 | /* C++ base class field. */ | |
e142c38c | 3395 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 3396 | if (attr) |
e7c27a73 | 3397 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 3398 | * bits_per_byte); |
c906108c | 3399 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 3400 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 3401 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
3402 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
3403 | fip->nbaseclasses++; | |
3404 | } | |
3405 | } | |
3406 | ||
3407 | /* Create the vector of fields, and attach it to the type. */ | |
3408 | ||
3409 | static void | |
fba45db2 | 3410 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3411 | struct dwarf2_cu *cu) |
c906108c SS |
3412 | { |
3413 | int nfields = fip->nfields; | |
3414 | ||
3415 | /* Record the field count, allocate space for the array of fields, | |
3416 | and create blank accessibility bitfields if necessary. */ | |
3417 | TYPE_NFIELDS (type) = nfields; | |
3418 | TYPE_FIELDS (type) = (struct field *) | |
3419 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3420 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3421 | ||
3422 | if (fip->non_public_fields) | |
3423 | { | |
3424 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3425 | ||
3426 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3427 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3428 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3429 | ||
3430 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3431 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3432 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3433 | ||
3434 | TYPE_FIELD_IGNORE_BITS (type) = | |
3435 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3436 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3437 | } | |
3438 | ||
3439 | /* If the type has baseclasses, allocate and clear a bit vector for | |
3440 | TYPE_FIELD_VIRTUAL_BITS. */ | |
3441 | if (fip->nbaseclasses) | |
3442 | { | |
3443 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
3444 | char *pointer; | |
3445 | ||
3446 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3447 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3448 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3449 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); | |
3450 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
3451 | } | |
3452 | ||
3453 | /* Copy the saved-up fields into the field vector. Start from the head | |
3454 | of the list, adding to the tail of the field array, so that they end | |
3455 | up in the same order in the array in which they were added to the list. */ | |
3456 | while (nfields-- > 0) | |
3457 | { | |
3458 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
3459 | switch (fip->fields->accessibility) | |
3460 | { | |
c5aa993b JM |
3461 | case DW_ACCESS_private: |
3462 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3463 | break; | |
c906108c | 3464 | |
c5aa993b JM |
3465 | case DW_ACCESS_protected: |
3466 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3467 | break; | |
c906108c | 3468 | |
c5aa993b JM |
3469 | case DW_ACCESS_public: |
3470 | break; | |
c906108c | 3471 | |
c5aa993b JM |
3472 | default: |
3473 | /* Unknown accessibility. Complain and treat it as public. */ | |
3474 | { | |
4d3c2250 KB |
3475 | complaint (&symfile_complaints, "unsupported accessibility %d", |
3476 | fip->fields->accessibility); | |
c5aa993b JM |
3477 | } |
3478 | break; | |
c906108c SS |
3479 | } |
3480 | if (nfields < fip->nbaseclasses) | |
3481 | { | |
3482 | switch (fip->fields->virtuality) | |
3483 | { | |
c5aa993b JM |
3484 | case DW_VIRTUALITY_virtual: |
3485 | case DW_VIRTUALITY_pure_virtual: | |
3486 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
3487 | break; | |
c906108c SS |
3488 | } |
3489 | } | |
3490 | fip->fields = fip->fields->next; | |
3491 | } | |
3492 | } | |
3493 | ||
c906108c SS |
3494 | /* Add a member function to the proper fieldlist. */ |
3495 | ||
3496 | static void | |
107d2387 | 3497 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 3498 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 3499 | { |
e7c27a73 | 3500 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3501 | struct attribute *attr; |
3502 | struct fnfieldlist *flp; | |
3503 | int i; | |
3504 | struct fn_field *fnp; | |
3505 | char *fieldname; | |
3506 | char *physname; | |
3507 | struct nextfnfield *new_fnfield; | |
3508 | ||
2df3850c | 3509 | /* Get name of member function. */ |
e142c38c | 3510 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
3511 | if (attr && DW_STRING (attr)) |
3512 | fieldname = DW_STRING (attr); | |
c906108c | 3513 | else |
2df3850c | 3514 | return; |
c906108c | 3515 | |
2df3850c | 3516 | /* Get the mangled name. */ |
e142c38c | 3517 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
3518 | |
3519 | /* Look up member function name in fieldlist. */ | |
3520 | for (i = 0; i < fip->nfnfields; i++) | |
3521 | { | |
27bfe10e | 3522 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
3523 | break; |
3524 | } | |
3525 | ||
3526 | /* Create new list element if necessary. */ | |
3527 | if (i < fip->nfnfields) | |
3528 | flp = &fip->fnfieldlists[i]; | |
3529 | else | |
3530 | { | |
3531 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3532 | { | |
3533 | fip->fnfieldlists = (struct fnfieldlist *) | |
3534 | xrealloc (fip->fnfieldlists, | |
3535 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3536 | * sizeof (struct fnfieldlist)); |
c906108c | 3537 | if (fip->nfnfields == 0) |
c13c43fd | 3538 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
3539 | } |
3540 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
3541 | flp->name = fieldname; | |
3542 | flp->length = 0; | |
3543 | flp->head = NULL; | |
3544 | fip->nfnfields++; | |
3545 | } | |
3546 | ||
3547 | /* Create a new member function field and chain it to the field list | |
3548 | entry. */ | |
3549 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 3550 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
3551 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
3552 | new_fnfield->next = flp->head; | |
3553 | flp->head = new_fnfield; | |
3554 | flp->length++; | |
3555 | ||
3556 | /* Fill in the member function field info. */ | |
3557 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
3558 | /* The name is already allocated along with this objfile, so we don't |
3559 | need to duplicate it for the type. */ | |
3560 | fnp->physname = physname ? physname : ""; | |
c906108c SS |
3561 | fnp->type = alloc_type (objfile); |
3562 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
3563 | { | |
c906108c | 3564 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 3565 | |
e26fb1d7 DC |
3566 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
3567 | of the method itself (TYPE_CODE_METHOD). */ | |
3568 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
3569 | TYPE_TARGET_TYPE (die->type), |
3570 | TYPE_FIELDS (die->type), | |
3571 | TYPE_NFIELDS (die->type), | |
3572 | TYPE_VARARGS (die->type)); | |
c906108c SS |
3573 | |
3574 | /* Handle static member functions. | |
c5aa993b JM |
3575 | Dwarf2 has no clean way to discern C++ static and non-static |
3576 | member functions. G++ helps GDB by marking the first | |
3577 | parameter for non-static member functions (which is the | |
3578 | this pointer) as artificial. We obtain this information | |
3579 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
3580 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
3581 | fnp->voffset = VOFFSET_STATIC; | |
3582 | } | |
3583 | else | |
4d3c2250 KB |
3584 | complaint (&symfile_complaints, "member function type missing for '%s'", |
3585 | physname); | |
c906108c SS |
3586 | |
3587 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 3588 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 3589 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
3590 | |
3591 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
3592 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
3593 | ||
3594 | /* Get accessibility. */ | |
e142c38c | 3595 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3596 | if (attr) |
3597 | { | |
3598 | switch (DW_UNSND (attr)) | |
3599 | { | |
c5aa993b JM |
3600 | case DW_ACCESS_private: |
3601 | fnp->is_private = 1; | |
3602 | break; | |
3603 | case DW_ACCESS_protected: | |
3604 | fnp->is_protected = 1; | |
3605 | break; | |
c906108c SS |
3606 | } |
3607 | } | |
3608 | ||
b02dede2 | 3609 | /* Check for artificial methods. */ |
e142c38c | 3610 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3611 | if (attr && DW_UNSND (attr) != 0) |
3612 | fnp->is_artificial = 1; | |
3613 | ||
c906108c | 3614 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3615 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3616 | if (attr) |
8e19ed76 PS |
3617 | { |
3618 | /* Support the .debug_loc offsets */ | |
3619 | if (attr_form_is_block (attr)) | |
3620 | { | |
e7c27a73 | 3621 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 PS |
3622 | } |
3623 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3624 | { | |
4d3c2250 | 3625 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3626 | } |
3627 | else | |
3628 | { | |
4d3c2250 KB |
3629 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3630 | fieldname); | |
8e19ed76 PS |
3631 | } |
3632 | } | |
c906108c SS |
3633 | } |
3634 | ||
3635 | /* Create the vector of member function fields, and attach it to the type. */ | |
3636 | ||
3637 | static void | |
fba45db2 | 3638 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3639 | struct dwarf2_cu *cu) |
c906108c SS |
3640 | { |
3641 | struct fnfieldlist *flp; | |
3642 | int total_length = 0; | |
3643 | int i; | |
3644 | ||
3645 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3646 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
3647 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
3648 | ||
3649 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
3650 | { | |
3651 | struct nextfnfield *nfp = flp->head; | |
3652 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
3653 | int k; | |
3654 | ||
3655 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
3656 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
3657 | fn_flp->fn_fields = (struct fn_field *) | |
3658 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
3659 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 3660 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
3661 | |
3662 | total_length += flp->length; | |
3663 | } | |
3664 | ||
3665 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
3666 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
3667 | } | |
3668 | ||
1168df01 JB |
3669 | |
3670 | /* Returns non-zero if NAME is the name of a vtable member in CU's | |
3671 | language, zero otherwise. */ | |
3672 | static int | |
3673 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
3674 | { | |
3675 | static const char vptr[] = "_vptr"; | |
987504bb | 3676 | static const char vtable[] = "vtable"; |
1168df01 | 3677 | |
987504bb JJ |
3678 | /* Look for the C++ and Java forms of the vtable. */ |
3679 | if ((cu->language == language_java | |
3680 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
3681 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
3682 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
3683 | return 1; |
3684 | ||
3685 | return 0; | |
3686 | } | |
3687 | ||
3688 | ||
c906108c SS |
3689 | /* Called when we find the DIE that starts a structure or union scope |
3690 | (definition) to process all dies that define the members of the | |
3691 | structure or union. | |
3692 | ||
3693 | NOTE: we need to call struct_type regardless of whether or not the | |
3694 | DIE has an at_name attribute, since it might be an anonymous | |
3695 | structure or union. This gets the type entered into our set of | |
3696 | user defined types. | |
3697 | ||
3698 | However, if the structure is incomplete (an opaque struct/union) | |
3699 | then suppress creating a symbol table entry for it since gdb only | |
3700 | wants to find the one with the complete definition. Note that if | |
3701 | it is complete, we just call new_symbol, which does it's own | |
3702 | checking about whether the struct/union is anonymous or not (and | |
3703 | suppresses creating a symbol table entry itself). */ | |
3704 | ||
3705 | static void | |
134d01f1 | 3706 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3707 | { |
e7c27a73 | 3708 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3709 | struct type *type; |
3710 | struct attribute *attr; | |
63d06c5c DC |
3711 | const char *previous_prefix = processing_current_prefix; |
3712 | struct cleanup *back_to = NULL; | |
c906108c | 3713 | |
134d01f1 DJ |
3714 | if (die->type) |
3715 | return; | |
3716 | ||
c906108c SS |
3717 | type = alloc_type (objfile); |
3718 | ||
3719 | INIT_CPLUS_SPECIFIC (type); | |
e142c38c | 3720 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3721 | if (attr && DW_STRING (attr)) |
3722 | { | |
987504bb JJ |
3723 | if (cu->language == language_cplus |
3724 | || cu->language == language_java) | |
63d06c5c | 3725 | { |
8176b9b8 DC |
3726 | char *new_prefix = determine_class_name (die, cu); |
3727 | TYPE_TAG_NAME (type) = obsavestring (new_prefix, | |
3728 | strlen (new_prefix), | |
3729 | &objfile->objfile_obstack); | |
3730 | back_to = make_cleanup (xfree, new_prefix); | |
63d06c5c DC |
3731 | processing_current_prefix = new_prefix; |
3732 | } | |
3733 | else | |
3734 | { | |
d8151005 DJ |
3735 | /* The name is already allocated along with this objfile, so |
3736 | we don't need to duplicate it for the type. */ | |
8176b9b8 | 3737 | TYPE_TAG_NAME (type) = DW_STRING (attr); |
63d06c5c | 3738 | } |
c906108c SS |
3739 | } |
3740 | ||
3741 | if (die->tag == DW_TAG_structure_type) | |
3742 | { | |
3743 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
3744 | } | |
3745 | else if (die->tag == DW_TAG_union_type) | |
3746 | { | |
3747 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
3748 | } | |
3749 | else | |
3750 | { | |
3751 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 3752 | in gdbtypes.h. */ |
c906108c SS |
3753 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
3754 | } | |
3755 | ||
e142c38c | 3756 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3757 | if (attr) |
3758 | { | |
3759 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3760 | } | |
3761 | else | |
3762 | { | |
3763 | TYPE_LENGTH (type) = 0; | |
3764 | } | |
3765 | ||
dc718098 JB |
3766 | if (die_is_declaration (die, cu)) |
3767 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
3768 | ||
c906108c SS |
3769 | /* We need to add the type field to the die immediately so we don't |
3770 | infinitely recurse when dealing with pointers to the structure | |
3771 | type within the structure itself. */ | |
1c379e20 | 3772 | set_die_type (die, type, cu); |
c906108c | 3773 | |
e142c38c | 3774 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
3775 | { |
3776 | struct field_info fi; | |
3777 | struct die_info *child_die; | |
3778 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
3779 | ||
3780 | memset (&fi, 0, sizeof (struct field_info)); | |
3781 | ||
639d11d3 | 3782 | child_die = die->child; |
c906108c SS |
3783 | |
3784 | while (child_die && child_die->tag) | |
3785 | { | |
a9a9bd0f DC |
3786 | if (child_die->tag == DW_TAG_member |
3787 | || child_die->tag == DW_TAG_variable) | |
c906108c | 3788 | { |
a9a9bd0f DC |
3789 | /* NOTE: carlton/2002-11-05: A C++ static data member |
3790 | should be a DW_TAG_member that is a declaration, but | |
3791 | all versions of G++ as of this writing (so through at | |
3792 | least 3.2.1) incorrectly generate DW_TAG_variable | |
3793 | tags for them instead. */ | |
e7c27a73 | 3794 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3795 | } |
8713b1b1 | 3796 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
3797 | { |
3798 | /* C++ member function. */ | |
134d01f1 | 3799 | read_type_die (child_die, cu); |
e7c27a73 | 3800 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
3801 | } |
3802 | else if (child_die->tag == DW_TAG_inheritance) | |
3803 | { | |
3804 | /* C++ base class field. */ | |
e7c27a73 | 3805 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3806 | } |
c906108c SS |
3807 | child_die = sibling_die (child_die); |
3808 | } | |
3809 | ||
3810 | /* Attach fields and member functions to the type. */ | |
3811 | if (fi.nfields) | |
e7c27a73 | 3812 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
3813 | if (fi.nfnfields) |
3814 | { | |
e7c27a73 | 3815 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 3816 | |
c5aa993b | 3817 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
3818 | class itself) which contains the vtable pointer for the current |
3819 | class from the DW_AT_containing_type attribute. */ | |
3820 | ||
e142c38c | 3821 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 3822 | { |
e7c27a73 | 3823 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
3824 | |
3825 | TYPE_VPTR_BASETYPE (type) = t; | |
3826 | if (type == t) | |
3827 | { | |
c906108c SS |
3828 | int i; |
3829 | ||
3830 | /* Our own class provides vtbl ptr. */ | |
3831 | for (i = TYPE_NFIELDS (t) - 1; | |
3832 | i >= TYPE_N_BASECLASSES (t); | |
3833 | --i) | |
3834 | { | |
3835 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
3836 | ||
1168df01 | 3837 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
3838 | { |
3839 | TYPE_VPTR_FIELDNO (type) = i; | |
3840 | break; | |
3841 | } | |
3842 | } | |
3843 | ||
3844 | /* Complain if virtual function table field not found. */ | |
3845 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 KB |
3846 | complaint (&symfile_complaints, |
3847 | "virtual function table pointer not found when defining class '%s'", | |
3848 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : | |
3849 | ""); | |
c906108c SS |
3850 | } |
3851 | else | |
3852 | { | |
3853 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3854 | } | |
3855 | } | |
3856 | } | |
3857 | ||
c906108c SS |
3858 | do_cleanups (back_to); |
3859 | } | |
63d06c5c DC |
3860 | |
3861 | processing_current_prefix = previous_prefix; | |
3862 | if (back_to != NULL) | |
3863 | do_cleanups (back_to); | |
c906108c SS |
3864 | } |
3865 | ||
134d01f1 DJ |
3866 | static void |
3867 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
3868 | { | |
3869 | struct objfile *objfile = cu->objfile; | |
3870 | const char *previous_prefix = processing_current_prefix; | |
90aeadfc | 3871 | struct die_info *child_die = die->child; |
c906108c | 3872 | |
134d01f1 DJ |
3873 | if (TYPE_TAG_NAME (die->type) != NULL) |
3874 | processing_current_prefix = TYPE_TAG_NAME (die->type); | |
c906108c | 3875 | |
90aeadfc DC |
3876 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
3877 | snapshots) has been known to create a die giving a declaration | |
3878 | for a class that has, as a child, a die giving a definition for a | |
3879 | nested class. So we have to process our children even if the | |
3880 | current die is a declaration. Normally, of course, a declaration | |
3881 | won't have any children at all. */ | |
134d01f1 | 3882 | |
90aeadfc DC |
3883 | while (child_die != NULL && child_die->tag) |
3884 | { | |
3885 | if (child_die->tag == DW_TAG_member | |
3886 | || child_die->tag == DW_TAG_variable | |
3887 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 3888 | { |
90aeadfc | 3889 | /* Do nothing. */ |
134d01f1 | 3890 | } |
90aeadfc DC |
3891 | else |
3892 | process_die (child_die, cu); | |
134d01f1 | 3893 | |
90aeadfc | 3894 | child_die = sibling_die (child_die); |
134d01f1 DJ |
3895 | } |
3896 | ||
90aeadfc DC |
3897 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
3898 | new_symbol (die, die->type, cu); | |
3899 | ||
134d01f1 DJ |
3900 | processing_current_prefix = previous_prefix; |
3901 | } | |
3902 | ||
3903 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
3904 | complete the type's fields yet, or create any symbols. */ | |
c906108c SS |
3905 | |
3906 | static void | |
134d01f1 | 3907 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3908 | { |
e7c27a73 | 3909 | struct objfile *objfile = cu->objfile; |
c906108c | 3910 | struct type *type; |
c906108c | 3911 | struct attribute *attr; |
134d01f1 DJ |
3912 | |
3913 | if (die->type) | |
3914 | return; | |
c906108c SS |
3915 | |
3916 | type = alloc_type (objfile); | |
3917 | ||
3918 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
e142c38c | 3919 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3920 | if (attr && DW_STRING (attr)) |
3921 | { | |
d8151005 | 3922 | char *name = DW_STRING (attr); |
63d06c5c DC |
3923 | |
3924 | if (processing_has_namespace_info) | |
3925 | { | |
987504bb JJ |
3926 | TYPE_TAG_NAME (type) = typename_concat (&objfile->objfile_obstack, |
3927 | processing_current_prefix, | |
3928 | name, cu); | |
63d06c5c DC |
3929 | } |
3930 | else | |
3931 | { | |
d8151005 DJ |
3932 | /* The name is already allocated along with this objfile, so |
3933 | we don't need to duplicate it for the type. */ | |
3934 | TYPE_TAG_NAME (type) = name; | |
63d06c5c | 3935 | } |
c906108c SS |
3936 | } |
3937 | ||
e142c38c | 3938 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3939 | if (attr) |
3940 | { | |
3941 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3942 | } | |
3943 | else | |
3944 | { | |
3945 | TYPE_LENGTH (type) = 0; | |
3946 | } | |
3947 | ||
1c379e20 | 3948 | set_die_type (die, type, cu); |
134d01f1 DJ |
3949 | } |
3950 | ||
8176b9b8 | 3951 | /* Determine the name of the type represented by DIE, which should be |
987504bb | 3952 | a named C++ or Java compound type. Return the name in question; the caller |
8176b9b8 DC |
3953 | is responsible for xfree()'ing it. */ |
3954 | ||
3955 | static char * | |
3956 | determine_class_name (struct die_info *die, struct dwarf2_cu *cu) | |
3957 | { | |
3958 | struct cleanup *back_to = NULL; | |
3959 | struct die_info *spec_die = die_specification (die, cu); | |
3960 | char *new_prefix = NULL; | |
3961 | ||
3962 | /* If this is the definition of a class that is declared by another | |
3963 | die, then processing_current_prefix may not be accurate; see | |
3964 | read_func_scope for a similar example. */ | |
3965 | if (spec_die != NULL) | |
3966 | { | |
3967 | char *specification_prefix = determine_prefix (spec_die, cu); | |
3968 | processing_current_prefix = specification_prefix; | |
3969 | back_to = make_cleanup (xfree, specification_prefix); | |
3970 | } | |
3971 | ||
3972 | /* If we don't have namespace debug info, guess the name by trying | |
3973 | to demangle the names of members, just like we did in | |
72bf9492 | 3974 | guess_structure_name. */ |
8176b9b8 DC |
3975 | if (!processing_has_namespace_info) |
3976 | { | |
3977 | struct die_info *child; | |
3978 | ||
3979 | for (child = die->child; | |
3980 | child != NULL && child->tag != 0; | |
3981 | child = sibling_die (child)) | |
3982 | { | |
3983 | if (child->tag == DW_TAG_subprogram) | |
3984 | { | |
31c27f77 JJ |
3985 | new_prefix |
3986 | = language_class_name_from_physname (cu->language_defn, | |
3987 | dwarf2_linkage_name | |
8176b9b8 DC |
3988 | (child, cu)); |
3989 | ||
3990 | if (new_prefix != NULL) | |
3991 | break; | |
3992 | } | |
3993 | } | |
3994 | } | |
3995 | ||
3996 | if (new_prefix == NULL) | |
3997 | { | |
3998 | const char *name = dwarf2_name (die, cu); | |
987504bb JJ |
3999 | new_prefix = typename_concat (NULL, processing_current_prefix, |
4000 | name ? name : "<<anonymous>>", | |
4001 | cu); | |
8176b9b8 DC |
4002 | } |
4003 | ||
4004 | if (back_to != NULL) | |
4005 | do_cleanups (back_to); | |
4006 | ||
4007 | return new_prefix; | |
4008 | } | |
4009 | ||
134d01f1 DJ |
4010 | /* Given a pointer to a die which begins an enumeration, process all |
4011 | the dies that define the members of the enumeration, and create the | |
4012 | symbol for the enumeration type. | |
4013 | ||
4014 | NOTE: We reverse the order of the element list. */ | |
4015 | ||
4016 | static void | |
4017 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4018 | { | |
4019 | struct objfile *objfile = cu->objfile; | |
4020 | struct die_info *child_die; | |
4021 | struct field *fields; | |
4022 | struct attribute *attr; | |
4023 | struct symbol *sym; | |
4024 | int num_fields; | |
4025 | int unsigned_enum = 1; | |
4026 | ||
c906108c SS |
4027 | num_fields = 0; |
4028 | fields = NULL; | |
639d11d3 | 4029 | if (die->child != NULL) |
c906108c | 4030 | { |
639d11d3 | 4031 | child_die = die->child; |
c906108c SS |
4032 | while (child_die && child_die->tag) |
4033 | { | |
4034 | if (child_die->tag != DW_TAG_enumerator) | |
4035 | { | |
e7c27a73 | 4036 | process_die (child_die, cu); |
c906108c SS |
4037 | } |
4038 | else | |
4039 | { | |
e142c38c | 4040 | attr = dwarf2_attr (child_die, DW_AT_name, cu); |
c906108c SS |
4041 | if (attr) |
4042 | { | |
134d01f1 | 4043 | sym = new_symbol (child_die, die->type, cu); |
c906108c SS |
4044 | if (SYMBOL_VALUE (sym) < 0) |
4045 | unsigned_enum = 0; | |
4046 | ||
4047 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4048 | { | |
4049 | fields = (struct field *) | |
4050 | xrealloc (fields, | |
4051 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4052 | * sizeof (struct field)); |
c906108c SS |
4053 | } |
4054 | ||
22abf04a | 4055 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
4056 | FIELD_TYPE (fields[num_fields]) = NULL; |
4057 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
4058 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 4059 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
4060 | |
4061 | num_fields++; | |
4062 | } | |
4063 | } | |
4064 | ||
4065 | child_die = sibling_die (child_die); | |
4066 | } | |
4067 | ||
4068 | if (num_fields) | |
4069 | { | |
134d01f1 DJ |
4070 | TYPE_NFIELDS (die->type) = num_fields; |
4071 | TYPE_FIELDS (die->type) = (struct field *) | |
4072 | TYPE_ALLOC (die->type, sizeof (struct field) * num_fields); | |
4073 | memcpy (TYPE_FIELDS (die->type), fields, | |
c906108c | 4074 | sizeof (struct field) * num_fields); |
b8c9b27d | 4075 | xfree (fields); |
c906108c SS |
4076 | } |
4077 | if (unsigned_enum) | |
134d01f1 | 4078 | TYPE_FLAGS (die->type) |= TYPE_FLAG_UNSIGNED; |
c906108c | 4079 | } |
134d01f1 DJ |
4080 | |
4081 | new_symbol (die, die->type, cu); | |
c906108c SS |
4082 | } |
4083 | ||
4084 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
4085 | the DIE's type field. For now, this only handles one dimensional | |
4086 | arrays. */ | |
4087 | ||
4088 | static void | |
e7c27a73 | 4089 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4090 | { |
e7c27a73 | 4091 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4092 | struct die_info *child_die; |
4093 | struct type *type = NULL; | |
4094 | struct type *element_type, *range_type, *index_type; | |
4095 | struct type **range_types = NULL; | |
4096 | struct attribute *attr; | |
4097 | int ndim = 0; | |
4098 | struct cleanup *back_to; | |
4099 | ||
4100 | /* Return if we've already decoded this type. */ | |
4101 | if (die->type) | |
4102 | { | |
4103 | return; | |
4104 | } | |
4105 | ||
e7c27a73 | 4106 | element_type = die_type (die, cu); |
c906108c SS |
4107 | |
4108 | /* Irix 6.2 native cc creates array types without children for | |
4109 | arrays with unspecified length. */ | |
639d11d3 | 4110 | if (die->child == NULL) |
c906108c | 4111 | { |
e142c38c | 4112 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 4113 | range_type = create_range_type (NULL, index_type, 0, -1); |
1c379e20 DJ |
4114 | set_die_type (die, create_array_type (NULL, element_type, range_type), |
4115 | cu); | |
c906108c SS |
4116 | return; |
4117 | } | |
4118 | ||
4119 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 4120 | child_die = die->child; |
c906108c SS |
4121 | while (child_die && child_die->tag) |
4122 | { | |
4123 | if (child_die->tag == DW_TAG_subrange_type) | |
4124 | { | |
a02abb62 | 4125 | read_subrange_type (child_die, cu); |
c906108c | 4126 | |
a02abb62 JB |
4127 | if (child_die->type != NULL) |
4128 | { | |
4129 | /* The range type was succesfully read. Save it for | |
4130 | the array type creation. */ | |
4131 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
4132 | { | |
4133 | range_types = (struct type **) | |
4134 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
4135 | * sizeof (struct type *)); | |
4136 | if (ndim == 0) | |
4137 | make_cleanup (free_current_contents, &range_types); | |
4138 | } | |
4139 | range_types[ndim++] = child_die->type; | |
4140 | } | |
c906108c SS |
4141 | } |
4142 | child_die = sibling_die (child_die); | |
4143 | } | |
4144 | ||
4145 | /* Dwarf2 dimensions are output from left to right, create the | |
4146 | necessary array types in backwards order. */ | |
7ca2d3a3 | 4147 | |
c906108c | 4148 | type = element_type; |
7ca2d3a3 DL |
4149 | |
4150 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
4151 | { | |
4152 | int i = 0; | |
4153 | while (i < ndim) | |
4154 | type = create_array_type (NULL, type, range_types[i++]); | |
4155 | } | |
4156 | else | |
4157 | { | |
4158 | while (ndim-- > 0) | |
4159 | type = create_array_type (NULL, type, range_types[ndim]); | |
4160 | } | |
c906108c | 4161 | |
f5f8a009 EZ |
4162 | /* Understand Dwarf2 support for vector types (like they occur on |
4163 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
4164 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
4165 | custom vendor extension. The main difference between a regular | |
4166 | array and the vector variant is that vectors are passed by value | |
4167 | to functions. */ | |
e142c38c | 4168 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 EZ |
4169 | if (attr) |
4170 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
4171 | ||
c906108c SS |
4172 | do_cleanups (back_to); |
4173 | ||
4174 | /* Install the type in the die. */ | |
1c379e20 | 4175 | set_die_type (die, type, cu); |
c906108c SS |
4176 | } |
4177 | ||
7ca2d3a3 DL |
4178 | static enum dwarf_array_dim_ordering |
4179 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
4180 | { | |
4181 | struct attribute *attr; | |
4182 | ||
4183 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
4184 | ||
4185 | if (attr) return DW_SND (attr); | |
4186 | ||
4187 | /* | |
4188 | GNU F77 is a special case, as at 08/2004 array type info is the | |
4189 | opposite order to the dwarf2 specification, but data is still | |
4190 | laid out as per normal fortran. | |
4191 | ||
4192 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
4193 | version checking. | |
4194 | */ | |
4195 | ||
4196 | if (cu->language == language_fortran && | |
4197 | cu->producer && strstr (cu->producer, "GNU F77")) | |
4198 | { | |
4199 | return DW_ORD_row_major; | |
4200 | } | |
4201 | ||
4202 | switch (cu->language_defn->la_array_ordering) | |
4203 | { | |
4204 | case array_column_major: | |
4205 | return DW_ORD_col_major; | |
4206 | case array_row_major: | |
4207 | default: | |
4208 | return DW_ORD_row_major; | |
4209 | }; | |
4210 | } | |
4211 | ||
4212 | ||
c906108c SS |
4213 | /* First cut: install each common block member as a global variable. */ |
4214 | ||
4215 | static void | |
e7c27a73 | 4216 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4217 | { |
4218 | struct die_info *child_die; | |
4219 | struct attribute *attr; | |
4220 | struct symbol *sym; | |
4221 | CORE_ADDR base = (CORE_ADDR) 0; | |
4222 | ||
e142c38c | 4223 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
4224 | if (attr) |
4225 | { | |
8e19ed76 PS |
4226 | /* Support the .debug_loc offsets */ |
4227 | if (attr_form_is_block (attr)) | |
4228 | { | |
e7c27a73 | 4229 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 PS |
4230 | } |
4231 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
4232 | { | |
4d3c2250 | 4233 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4234 | } |
4235 | else | |
4236 | { | |
4d3c2250 KB |
4237 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4238 | "common block member"); | |
8e19ed76 | 4239 | } |
c906108c | 4240 | } |
639d11d3 | 4241 | if (die->child != NULL) |
c906108c | 4242 | { |
639d11d3 | 4243 | child_die = die->child; |
c906108c SS |
4244 | while (child_die && child_die->tag) |
4245 | { | |
e7c27a73 | 4246 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 4247 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
4248 | if (attr) |
4249 | { | |
4250 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 4251 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
4252 | add_symbol_to_list (sym, &global_symbols); |
4253 | } | |
4254 | child_die = sibling_die (child_die); | |
4255 | } | |
4256 | } | |
4257 | } | |
4258 | ||
d9fa45fe DC |
4259 | /* Read a C++ namespace. */ |
4260 | ||
d9fa45fe | 4261 | static void |
e7c27a73 | 4262 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 4263 | { |
e7c27a73 | 4264 | struct objfile *objfile = cu->objfile; |
38d518c9 | 4265 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 4266 | const char *name; |
9219021c DC |
4267 | int is_anonymous; |
4268 | struct die_info *current_die; | |
987504bb | 4269 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
9219021c | 4270 | |
e142c38c | 4271 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
4272 | |
4273 | /* Now build the name of the current namespace. */ | |
4274 | ||
38d518c9 | 4275 | if (previous_prefix[0] == '\0') |
9219021c | 4276 | { |
38d518c9 | 4277 | processing_current_prefix = name; |
9219021c DC |
4278 | } |
4279 | else | |
4280 | { | |
987504bb JJ |
4281 | char *temp_name = typename_concat (NULL, previous_prefix, name, cu); |
4282 | make_cleanup (xfree, temp_name); | |
38d518c9 | 4283 | processing_current_prefix = temp_name; |
9219021c DC |
4284 | } |
4285 | ||
5c4e30ca DC |
4286 | /* Add a symbol associated to this if we haven't seen the namespace |
4287 | before. Also, add a using directive if it's an anonymous | |
4288 | namespace. */ | |
9219021c | 4289 | |
e142c38c | 4290 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
4291 | { |
4292 | struct type *type; | |
4293 | ||
4294 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
4295 | this cast will hopefully become unnecessary. */ | |
4296 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 4297 | (char *) processing_current_prefix, |
5c4e30ca DC |
4298 | objfile); |
4299 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
4300 | ||
e7c27a73 | 4301 | new_symbol (die, type, cu); |
1c379e20 | 4302 | set_die_type (die, type, cu); |
5c4e30ca DC |
4303 | |
4304 | if (is_anonymous) | |
38d518c9 EZ |
4305 | cp_add_using_directive (processing_current_prefix, |
4306 | strlen (previous_prefix), | |
4307 | strlen (processing_current_prefix)); | |
5c4e30ca | 4308 | } |
9219021c | 4309 | |
639d11d3 | 4310 | if (die->child != NULL) |
d9fa45fe | 4311 | { |
639d11d3 | 4312 | struct die_info *child_die = die->child; |
d9fa45fe DC |
4313 | |
4314 | while (child_die && child_die->tag) | |
4315 | { | |
e7c27a73 | 4316 | process_die (child_die, cu); |
d9fa45fe DC |
4317 | child_die = sibling_die (child_die); |
4318 | } | |
4319 | } | |
9219021c | 4320 | |
38d518c9 | 4321 | processing_current_prefix = previous_prefix; |
987504bb | 4322 | do_cleanups (back_to); |
38d518c9 EZ |
4323 | } |
4324 | ||
4325 | /* Return the name of the namespace represented by DIE. Set | |
4326 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
4327 | namespace. */ | |
4328 | ||
4329 | static const char * | |
e142c38c | 4330 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
4331 | { |
4332 | struct die_info *current_die; | |
4333 | const char *name = NULL; | |
4334 | ||
4335 | /* Loop through the extensions until we find a name. */ | |
4336 | ||
4337 | for (current_die = die; | |
4338 | current_die != NULL; | |
e142c38c | 4339 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 4340 | { |
e142c38c | 4341 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
4342 | if (name != NULL) |
4343 | break; | |
4344 | } | |
4345 | ||
4346 | /* Is it an anonymous namespace? */ | |
4347 | ||
4348 | *is_anonymous = (name == NULL); | |
4349 | if (*is_anonymous) | |
4350 | name = "(anonymous namespace)"; | |
4351 | ||
4352 | return name; | |
d9fa45fe DC |
4353 | } |
4354 | ||
c906108c SS |
4355 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
4356 | the user defined type vector. */ | |
4357 | ||
4358 | static void | |
e7c27a73 | 4359 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4360 | { |
e7c27a73 | 4361 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 4362 | struct type *type; |
8b2dbe47 KB |
4363 | struct attribute *attr_byte_size; |
4364 | struct attribute *attr_address_class; | |
4365 | int byte_size, addr_class; | |
c906108c SS |
4366 | |
4367 | if (die->type) | |
4368 | { | |
4369 | return; | |
4370 | } | |
4371 | ||
e7c27a73 | 4372 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 4373 | |
e142c38c | 4374 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
4375 | if (attr_byte_size) |
4376 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 4377 | else |
8b2dbe47 KB |
4378 | byte_size = cu_header->addr_size; |
4379 | ||
e142c38c | 4380 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
4381 | if (attr_address_class) |
4382 | addr_class = DW_UNSND (attr_address_class); | |
4383 | else | |
4384 | addr_class = DW_ADDR_none; | |
4385 | ||
4386 | /* If the pointer size or address class is different than the | |
4387 | default, create a type variant marked as such and set the | |
4388 | length accordingly. */ | |
4389 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 4390 | { |
8b2dbe47 KB |
4391 | if (ADDRESS_CLASS_TYPE_FLAGS_P ()) |
4392 | { | |
4393 | int type_flags; | |
4394 | ||
4395 | type_flags = ADDRESS_CLASS_TYPE_FLAGS (byte_size, addr_class); | |
4396 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); | |
4397 | type = make_type_with_address_space (type, type_flags); | |
4398 | } | |
4399 | else if (TYPE_LENGTH (type) != byte_size) | |
4400 | { | |
4d3c2250 | 4401 | complaint (&symfile_complaints, "invalid pointer size %d", byte_size); |
8b2dbe47 KB |
4402 | } |
4403 | else { | |
4404 | /* Should we also complain about unhandled address classes? */ | |
4405 | } | |
c906108c | 4406 | } |
8b2dbe47 KB |
4407 | |
4408 | TYPE_LENGTH (type) = byte_size; | |
1c379e20 | 4409 | set_die_type (die, type, cu); |
c906108c SS |
4410 | } |
4411 | ||
4412 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
4413 | the user defined type vector. */ | |
4414 | ||
4415 | static void | |
e7c27a73 | 4416 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4417 | { |
e7c27a73 | 4418 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4419 | struct type *type; |
4420 | struct type *to_type; | |
4421 | struct type *domain; | |
4422 | ||
4423 | if (die->type) | |
4424 | { | |
4425 | return; | |
4426 | } | |
4427 | ||
4428 | type = alloc_type (objfile); | |
e7c27a73 DJ |
4429 | to_type = die_type (die, cu); |
4430 | domain = die_containing_type (die, cu); | |
c906108c SS |
4431 | smash_to_member_type (type, domain, to_type); |
4432 | ||
1c379e20 | 4433 | set_die_type (die, type, cu); |
c906108c SS |
4434 | } |
4435 | ||
4436 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
4437 | the user defined type vector. */ | |
4438 | ||
4439 | static void | |
e7c27a73 | 4440 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4441 | { |
e7c27a73 | 4442 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4443 | struct type *type; |
4444 | struct attribute *attr; | |
4445 | ||
4446 | if (die->type) | |
4447 | { | |
4448 | return; | |
4449 | } | |
4450 | ||
e7c27a73 | 4451 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 4452 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4453 | if (attr) |
4454 | { | |
4455 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4456 | } | |
4457 | else | |
4458 | { | |
107d2387 | 4459 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 4460 | } |
1c379e20 | 4461 | set_die_type (die, type, cu); |
c906108c SS |
4462 | } |
4463 | ||
4464 | static void | |
e7c27a73 | 4465 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4466 | { |
090c42a4 JB |
4467 | struct type *base_type; |
4468 | ||
c906108c SS |
4469 | if (die->type) |
4470 | { | |
4471 | return; | |
4472 | } | |
4473 | ||
e7c27a73 | 4474 | base_type = die_type (die, cu); |
1c379e20 DJ |
4475 | set_die_type (die, make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0), |
4476 | cu); | |
c906108c SS |
4477 | } |
4478 | ||
4479 | static void | |
e7c27a73 | 4480 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4481 | { |
090c42a4 JB |
4482 | struct type *base_type; |
4483 | ||
c906108c SS |
4484 | if (die->type) |
4485 | { | |
4486 | return; | |
4487 | } | |
4488 | ||
e7c27a73 | 4489 | base_type = die_type (die, cu); |
1c379e20 DJ |
4490 | set_die_type (die, make_cv_type (TYPE_CONST (base_type), 1, base_type, 0), |
4491 | cu); | |
c906108c SS |
4492 | } |
4493 | ||
4494 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
4495 | the user defined type vector. It isn't really a user defined type, | |
4496 | but it behaves like one, with other DIE's using an AT_user_def_type | |
4497 | attribute to reference it. */ | |
4498 | ||
4499 | static void | |
e7c27a73 | 4500 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4501 | { |
e7c27a73 | 4502 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4503 | struct type *type, *range_type, *index_type, *char_type; |
4504 | struct attribute *attr; | |
4505 | unsigned int length; | |
4506 | ||
4507 | if (die->type) | |
4508 | { | |
4509 | return; | |
4510 | } | |
4511 | ||
e142c38c | 4512 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
4513 | if (attr) |
4514 | { | |
4515 | length = DW_UNSND (attr); | |
4516 | } | |
4517 | else | |
4518 | { | |
b21b22e0 | 4519 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 4520 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
4521 | if (attr) |
4522 | { | |
4523 | length = DW_UNSND (attr); | |
4524 | } | |
4525 | else | |
4526 | { | |
4527 | length = 1; | |
4528 | } | |
c906108c | 4529 | } |
e142c38c | 4530 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 4531 | range_type = create_range_type (NULL, index_type, 1, length); |
e142c38c | 4532 | if (cu->language == language_fortran) |
b21b22e0 PS |
4533 | { |
4534 | /* Need to create a unique string type for bounds | |
4535 | information */ | |
4536 | type = create_string_type (0, range_type); | |
4537 | } | |
4538 | else | |
4539 | { | |
e142c38c | 4540 | char_type = dwarf2_fundamental_type (objfile, FT_CHAR, cu); |
b21b22e0 PS |
4541 | type = create_string_type (char_type, range_type); |
4542 | } | |
1c379e20 | 4543 | set_die_type (die, type, cu); |
c906108c SS |
4544 | } |
4545 | ||
4546 | /* Handle DIES due to C code like: | |
4547 | ||
4548 | struct foo | |
c5aa993b JM |
4549 | { |
4550 | int (*funcp)(int a, long l); | |
4551 | int b; | |
4552 | }; | |
c906108c SS |
4553 | |
4554 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 4555 | */ |
c906108c SS |
4556 | |
4557 | static void | |
e7c27a73 | 4558 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4559 | { |
4560 | struct type *type; /* Type that this function returns */ | |
4561 | struct type *ftype; /* Function that returns above type */ | |
4562 | struct attribute *attr; | |
4563 | ||
4564 | /* Decode the type that this subroutine returns */ | |
4565 | if (die->type) | |
4566 | { | |
4567 | return; | |
4568 | } | |
e7c27a73 | 4569 | type = die_type (die, cu); |
1326e61b | 4570 | ftype = make_function_type (type, (struct type **) 0); |
c906108c | 4571 | |
987504bb | 4572 | /* All functions in C++ and Java have prototypes. */ |
e142c38c | 4573 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 4574 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb JJ |
4575 | || cu->language == language_cplus |
4576 | || cu->language == language_java) | |
c906108c SS |
4577 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
4578 | ||
639d11d3 | 4579 | if (die->child != NULL) |
c906108c SS |
4580 | { |
4581 | struct die_info *child_die; | |
4582 | int nparams = 0; | |
4583 | int iparams = 0; | |
4584 | ||
4585 | /* Count the number of parameters. | |
4586 | FIXME: GDB currently ignores vararg functions, but knows about | |
4587 | vararg member functions. */ | |
639d11d3 | 4588 | child_die = die->child; |
c906108c SS |
4589 | while (child_die && child_die->tag) |
4590 | { | |
4591 | if (child_die->tag == DW_TAG_formal_parameter) | |
4592 | nparams++; | |
4593 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
4594 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
4595 | child_die = sibling_die (child_die); | |
4596 | } | |
4597 | ||
4598 | /* Allocate storage for parameters and fill them in. */ | |
4599 | TYPE_NFIELDS (ftype) = nparams; | |
4600 | TYPE_FIELDS (ftype) = (struct field *) | |
4601 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
4602 | ||
639d11d3 | 4603 | child_die = die->child; |
c906108c SS |
4604 | while (child_die && child_die->tag) |
4605 | { | |
4606 | if (child_die->tag == DW_TAG_formal_parameter) | |
4607 | { | |
4608 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
4609 | member functions. G++ helps GDB by marking the first |
4610 | parameter for non-static member functions (which is the | |
4611 | this pointer) as artificial. We pass this information | |
4612 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 4613 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
4614 | if (attr) |
4615 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
4616 | else | |
4617 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 4618 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
4619 | iparams++; |
4620 | } | |
4621 | child_die = sibling_die (child_die); | |
4622 | } | |
4623 | } | |
4624 | ||
1c379e20 | 4625 | set_die_type (die, ftype, cu); |
c906108c SS |
4626 | } |
4627 | ||
4628 | static void | |
e7c27a73 | 4629 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4630 | { |
e7c27a73 | 4631 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
4632 | struct attribute *attr; |
4633 | char *name = NULL; | |
c906108c SS |
4634 | |
4635 | if (!die->type) | |
4636 | { | |
e142c38c | 4637 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c | 4638 | if (attr && DW_STRING (attr)) |
2f038fcb FF |
4639 | { |
4640 | name = DW_STRING (attr); | |
4641 | } | |
1c379e20 DJ |
4642 | set_die_type (die, init_type (TYPE_CODE_TYPEDEF, 0, |
4643 | TYPE_FLAG_TARGET_STUB, name, objfile), | |
4644 | cu); | |
e7c27a73 | 4645 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
4646 | } |
4647 | } | |
4648 | ||
4649 | /* Find a representation of a given base type and install | |
4650 | it in the TYPE field of the die. */ | |
4651 | ||
4652 | static void | |
e7c27a73 | 4653 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4654 | { |
e7c27a73 | 4655 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4656 | struct type *type; |
4657 | struct attribute *attr; | |
4658 | int encoding = 0, size = 0; | |
4659 | ||
4660 | /* If we've already decoded this die, this is a no-op. */ | |
4661 | if (die->type) | |
4662 | { | |
4663 | return; | |
4664 | } | |
4665 | ||
e142c38c | 4666 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
4667 | if (attr) |
4668 | { | |
4669 | encoding = DW_UNSND (attr); | |
4670 | } | |
e142c38c | 4671 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4672 | if (attr) |
4673 | { | |
4674 | size = DW_UNSND (attr); | |
4675 | } | |
e142c38c | 4676 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
4677 | if (attr && DW_STRING (attr)) |
4678 | { | |
4679 | enum type_code code = TYPE_CODE_INT; | |
f5ef7c67 | 4680 | int type_flags = 0; |
c906108c SS |
4681 | |
4682 | switch (encoding) | |
4683 | { | |
4684 | case DW_ATE_address: | |
4685 | /* Turn DW_ATE_address into a void * pointer. */ | |
4686 | code = TYPE_CODE_PTR; | |
f5ef7c67 | 4687 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4688 | break; |
4689 | case DW_ATE_boolean: | |
4690 | code = TYPE_CODE_BOOL; | |
f5ef7c67 | 4691 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4692 | break; |
4693 | case DW_ATE_complex_float: | |
4694 | code = TYPE_CODE_COMPLEX; | |
4695 | break; | |
4696 | case DW_ATE_float: | |
4697 | code = TYPE_CODE_FLT; | |
4698 | break; | |
4699 | case DW_ATE_signed: | |
4700 | case DW_ATE_signed_char: | |
4701 | break; | |
4702 | case DW_ATE_unsigned: | |
4703 | case DW_ATE_unsigned_char: | |
f5ef7c67 | 4704 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4705 | break; |
4706 | default: | |
4d3c2250 KB |
4707 | complaint (&symfile_complaints, "unsupported DW_AT_encoding: '%s'", |
4708 | dwarf_type_encoding_name (encoding)); | |
c906108c SS |
4709 | break; |
4710 | } | |
f5ef7c67 | 4711 | type = init_type (code, size, type_flags, DW_STRING (attr), objfile); |
c906108c | 4712 | if (encoding == DW_ATE_address) |
e142c38c DJ |
4713 | TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID, |
4714 | cu); | |
f65ca430 DJ |
4715 | else if (encoding == DW_ATE_complex_float) |
4716 | { | |
4717 | if (size == 32) | |
4718 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4719 | = dwarf2_fundamental_type (objfile, FT_EXT_PREC_FLOAT, cu); |
f65ca430 DJ |
4720 | else if (size == 16) |
4721 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4722 | = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
f65ca430 DJ |
4723 | else if (size == 8) |
4724 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4725 | = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
f65ca430 | 4726 | } |
c906108c SS |
4727 | } |
4728 | else | |
4729 | { | |
e7c27a73 | 4730 | type = dwarf_base_type (encoding, size, cu); |
c906108c | 4731 | } |
1c379e20 | 4732 | set_die_type (die, type, cu); |
c906108c SS |
4733 | } |
4734 | ||
a02abb62 JB |
4735 | /* Read the given DW_AT_subrange DIE. */ |
4736 | ||
4737 | static void | |
4738 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
4739 | { | |
4740 | struct type *base_type; | |
4741 | struct type *range_type; | |
4742 | struct attribute *attr; | |
4743 | int low = 0; | |
4744 | int high = -1; | |
4745 | ||
4746 | /* If we have already decoded this die, then nothing more to do. */ | |
4747 | if (die->type) | |
4748 | return; | |
4749 | ||
4750 | base_type = die_type (die, cu); | |
4751 | if (base_type == NULL) | |
4752 | { | |
4753 | complaint (&symfile_complaints, | |
4754 | "DW_AT_type missing from DW_TAG_subrange_type"); | |
4755 | return; | |
4756 | } | |
4757 | ||
4758 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
4759 | base_type = alloc_type (NULL); | |
4760 | ||
e142c38c | 4761 | if (cu->language == language_fortran) |
a02abb62 JB |
4762 | { |
4763 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
4764 | low = 1; | |
4765 | } | |
4766 | ||
dd5e6932 DJ |
4767 | /* FIXME: For variable sized arrays either of these could be |
4768 | a variable rather than a constant value. We'll allow it, | |
4769 | but we don't know how to handle it. */ | |
e142c38c | 4770 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
4771 | if (attr) |
4772 | low = dwarf2_get_attr_constant_value (attr, 0); | |
4773 | ||
e142c38c | 4774 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
4775 | if (attr) |
4776 | { | |
4777 | if (attr->form == DW_FORM_block1) | |
4778 | { | |
4779 | /* GCC encodes arrays with unspecified or dynamic length | |
4780 | with a DW_FORM_block1 attribute. | |
4781 | FIXME: GDB does not yet know how to handle dynamic | |
4782 | arrays properly, treat them as arrays with unspecified | |
4783 | length for now. | |
4784 | ||
4785 | FIXME: jimb/2003-09-22: GDB does not really know | |
4786 | how to handle arrays of unspecified length | |
4787 | either; we just represent them as zero-length | |
4788 | arrays. Choose an appropriate upper bound given | |
4789 | the lower bound we've computed above. */ | |
4790 | high = low - 1; | |
4791 | } | |
4792 | else | |
4793 | high = dwarf2_get_attr_constant_value (attr, 1); | |
4794 | } | |
4795 | ||
4796 | range_type = create_range_type (NULL, base_type, low, high); | |
4797 | ||
e142c38c | 4798 | attr = dwarf2_attr (die, DW_AT_name, cu); |
a02abb62 JB |
4799 | if (attr && DW_STRING (attr)) |
4800 | TYPE_NAME (range_type) = DW_STRING (attr); | |
4801 | ||
e142c38c | 4802 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
4803 | if (attr) |
4804 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
4805 | ||
1c379e20 | 4806 | set_die_type (die, range_type, cu); |
a02abb62 JB |
4807 | } |
4808 | ||
4809 | ||
c906108c SS |
4810 | /* Read a whole compilation unit into a linked list of dies. */ |
4811 | ||
f9aca02d | 4812 | static struct die_info * |
e7c27a73 | 4813 | read_comp_unit (char *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4814 | { |
e7c27a73 | 4815 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
4816 | } |
4817 | ||
4818 | /* Read a single die and all its descendents. Set the die's sibling | |
4819 | field to NULL; set other fields in the die correctly, and set all | |
4820 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
4821 | location of the info_ptr after reading all of those dies. PARENT | |
4822 | is the parent of the die in question. */ | |
4823 | ||
4824 | static struct die_info * | |
4825 | read_die_and_children (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4826 | struct dwarf2_cu *cu, |
639d11d3 DC |
4827 | char **new_info_ptr, |
4828 | struct die_info *parent) | |
4829 | { | |
4830 | struct die_info *die; | |
4831 | char *cur_ptr; | |
4832 | int has_children; | |
4833 | ||
e7c27a73 | 4834 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
10b3939b | 4835 | store_in_ref_table (die->offset, die, cu); |
639d11d3 DC |
4836 | |
4837 | if (has_children) | |
4838 | { | |
e7c27a73 | 4839 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
4840 | new_info_ptr, die); |
4841 | } | |
4842 | else | |
4843 | { | |
4844 | die->child = NULL; | |
4845 | *new_info_ptr = cur_ptr; | |
4846 | } | |
4847 | ||
4848 | die->sibling = NULL; | |
4849 | die->parent = parent; | |
4850 | return die; | |
4851 | } | |
4852 | ||
4853 | /* Read a die, all of its descendents, and all of its siblings; set | |
4854 | all of the fields of all of the dies correctly. Arguments are as | |
4855 | in read_die_and_children. */ | |
4856 | ||
4857 | static struct die_info * | |
4858 | read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4859 | struct dwarf2_cu *cu, |
639d11d3 DC |
4860 | char **new_info_ptr, |
4861 | struct die_info *parent) | |
4862 | { | |
4863 | struct die_info *first_die, *last_sibling; | |
4864 | char *cur_ptr; | |
4865 | ||
c906108c | 4866 | cur_ptr = info_ptr; |
639d11d3 DC |
4867 | first_die = last_sibling = NULL; |
4868 | ||
4869 | while (1) | |
c906108c | 4870 | { |
639d11d3 | 4871 | struct die_info *die |
e7c27a73 | 4872 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
4873 | |
4874 | if (!first_die) | |
c906108c | 4875 | { |
639d11d3 | 4876 | first_die = die; |
c906108c | 4877 | } |
639d11d3 | 4878 | else |
c906108c | 4879 | { |
639d11d3 | 4880 | last_sibling->sibling = die; |
c906108c SS |
4881 | } |
4882 | ||
639d11d3 | 4883 | if (die->tag == 0) |
c906108c | 4884 | { |
639d11d3 DC |
4885 | *new_info_ptr = cur_ptr; |
4886 | return first_die; | |
c906108c SS |
4887 | } |
4888 | else | |
4889 | { | |
639d11d3 | 4890 | last_sibling = die; |
c906108c SS |
4891 | } |
4892 | } | |
c906108c SS |
4893 | } |
4894 | ||
4895 | /* Free a linked list of dies. */ | |
4896 | ||
4897 | static void | |
fba45db2 | 4898 | free_die_list (struct die_info *dies) |
c906108c SS |
4899 | { |
4900 | struct die_info *die, *next; | |
4901 | ||
4902 | die = dies; | |
4903 | while (die) | |
4904 | { | |
639d11d3 DC |
4905 | if (die->child != NULL) |
4906 | free_die_list (die->child); | |
4907 | next = die->sibling; | |
b8c9b27d KB |
4908 | xfree (die->attrs); |
4909 | xfree (die); | |
c906108c SS |
4910 | die = next; |
4911 | } | |
4912 | } | |
4913 | ||
4914 | /* Read the contents of the section at OFFSET and of size SIZE from the | |
8b92e4d5 | 4915 | object file specified by OBJFILE into the objfile_obstack and return it. */ |
c906108c | 4916 | |
b6af0555 | 4917 | char * |
188dd5d6 | 4918 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
4919 | { |
4920 | bfd *abfd = objfile->obfd; | |
086df311 | 4921 | char *buf, *retbuf; |
2c500098 | 4922 | bfd_size_type size = bfd_get_section_size (sectp); |
c906108c SS |
4923 | |
4924 | if (size == 0) | |
4925 | return NULL; | |
4926 | ||
8b92e4d5 | 4927 | buf = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
086df311 DJ |
4928 | retbuf |
4929 | = (char *) symfile_relocate_debug_section (abfd, sectp, (bfd_byte *) buf); | |
4930 | if (retbuf != NULL) | |
4931 | return retbuf; | |
4932 | ||
188dd5d6 DJ |
4933 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
4934 | || bfd_bread (buf, size, abfd) != size) | |
4935 | error ("Dwarf Error: Can't read DWARF data from '%s'", | |
4936 | bfd_get_filename (abfd)); | |
4937 | ||
c906108c SS |
4938 | return buf; |
4939 | } | |
4940 | ||
4941 | /* In DWARF version 2, the description of the debugging information is | |
4942 | stored in a separate .debug_abbrev section. Before we read any | |
4943 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
4944 | in a hash table. This function also sets flags in CU describing |
4945 | the data found in the abbrev table. */ | |
c906108c SS |
4946 | |
4947 | static void | |
e7c27a73 | 4948 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4949 | { |
e7c27a73 | 4950 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4951 | char *abbrev_ptr; |
4952 | struct abbrev_info *cur_abbrev; | |
4953 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
4954 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
4955 | struct attr_abbrev *cur_attrs; |
4956 | unsigned int allocated_attrs; | |
c906108c | 4957 | |
57349743 | 4958 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
4959 | obstack_init (&cu->abbrev_obstack); |
4960 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
4961 | (ABBREV_HASH_SIZE | |
4962 | * sizeof (struct abbrev_info *))); | |
4963 | memset (cu->dwarf2_abbrevs, 0, | |
4964 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 4965 | |
6502dd73 | 4966 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
4967 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
4968 | abbrev_ptr += bytes_read; | |
4969 | ||
f3dd6933 DJ |
4970 | allocated_attrs = ATTR_ALLOC_CHUNK; |
4971 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
4972 | ||
c906108c SS |
4973 | /* loop until we reach an abbrev number of 0 */ |
4974 | while (abbrev_number) | |
4975 | { | |
f3dd6933 | 4976 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
4977 | |
4978 | /* read in abbrev header */ | |
4979 | cur_abbrev->number = abbrev_number; | |
4980 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4981 | abbrev_ptr += bytes_read; | |
4982 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
4983 | abbrev_ptr += 1; | |
4984 | ||
72bf9492 DJ |
4985 | if (cur_abbrev->tag == DW_TAG_namespace) |
4986 | cu->has_namespace_info = 1; | |
4987 | ||
c906108c SS |
4988 | /* now read in declarations */ |
4989 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4990 | abbrev_ptr += bytes_read; | |
4991 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4992 | abbrev_ptr += bytes_read; | |
4993 | while (abbrev_name) | |
4994 | { | |
f3dd6933 | 4995 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 4996 | { |
f3dd6933 DJ |
4997 | allocated_attrs += ATTR_ALLOC_CHUNK; |
4998 | cur_attrs | |
4999 | = xrealloc (cur_attrs, (allocated_attrs | |
5000 | * sizeof (struct attr_abbrev))); | |
c906108c | 5001 | } |
ae038cb0 DJ |
5002 | |
5003 | /* Record whether this compilation unit might have | |
5004 | inter-compilation-unit references. If we don't know what form | |
5005 | this attribute will have, then it might potentially be a | |
5006 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
5007 | references. */ | |
5008 | ||
5009 | if (abbrev_form == DW_FORM_ref_addr | |
5010 | || abbrev_form == DW_FORM_indirect) | |
5011 | cu->has_form_ref_addr = 1; | |
5012 | ||
f3dd6933 DJ |
5013 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
5014 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
5015 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5016 | abbrev_ptr += bytes_read; | |
5017 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5018 | abbrev_ptr += bytes_read; | |
5019 | } | |
5020 | ||
f3dd6933 DJ |
5021 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
5022 | (cur_abbrev->num_attrs | |
5023 | * sizeof (struct attr_abbrev))); | |
5024 | memcpy (cur_abbrev->attrs, cur_attrs, | |
5025 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
5026 | ||
c906108c | 5027 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
5028 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
5029 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
5030 | |
5031 | /* Get next abbreviation. | |
5032 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
5033 | always properly terminated with an abbrev number of 0. |
5034 | Exit loop if we encounter an abbreviation which we have | |
5035 | already read (which means we are about to read the abbreviations | |
5036 | for the next compile unit) or if the end of the abbreviation | |
5037 | table is reached. */ | |
6502dd73 DJ |
5038 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev_buffer) |
5039 | >= dwarf2_per_objfile->abbrev_size) | |
c906108c SS |
5040 | break; |
5041 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5042 | abbrev_ptr += bytes_read; | |
e7c27a73 | 5043 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
5044 | break; |
5045 | } | |
f3dd6933 DJ |
5046 | |
5047 | xfree (cur_attrs); | |
c906108c SS |
5048 | } |
5049 | ||
f3dd6933 | 5050 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 5051 | |
c906108c | 5052 | static void |
f3dd6933 | 5053 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 5054 | { |
f3dd6933 | 5055 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 5056 | |
f3dd6933 DJ |
5057 | obstack_free (&cu->abbrev_obstack, NULL); |
5058 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
5059 | } |
5060 | ||
5061 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
5062 | ||
5063 | static struct abbrev_info * | |
e7c27a73 | 5064 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
5065 | { |
5066 | unsigned int hash_number; | |
5067 | struct abbrev_info *abbrev; | |
5068 | ||
5069 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 5070 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
5071 | |
5072 | while (abbrev) | |
5073 | { | |
5074 | if (abbrev->number == number) | |
5075 | return abbrev; | |
5076 | else | |
5077 | abbrev = abbrev->next; | |
5078 | } | |
5079 | return NULL; | |
5080 | } | |
5081 | ||
72bf9492 DJ |
5082 | /* Returns nonzero if TAG represents a type that we might generate a partial |
5083 | symbol for. */ | |
5084 | ||
5085 | static int | |
5086 | is_type_tag_for_partial (int tag) | |
5087 | { | |
5088 | switch (tag) | |
5089 | { | |
5090 | #if 0 | |
5091 | /* Some types that would be reasonable to generate partial symbols for, | |
5092 | that we don't at present. */ | |
5093 | case DW_TAG_array_type: | |
5094 | case DW_TAG_file_type: | |
5095 | case DW_TAG_ptr_to_member_type: | |
5096 | case DW_TAG_set_type: | |
5097 | case DW_TAG_string_type: | |
5098 | case DW_TAG_subroutine_type: | |
5099 | #endif | |
5100 | case DW_TAG_base_type: | |
5101 | case DW_TAG_class_type: | |
5102 | case DW_TAG_enumeration_type: | |
5103 | case DW_TAG_structure_type: | |
5104 | case DW_TAG_subrange_type: | |
5105 | case DW_TAG_typedef: | |
5106 | case DW_TAG_union_type: | |
5107 | return 1; | |
5108 | default: | |
5109 | return 0; | |
5110 | } | |
5111 | } | |
5112 | ||
5113 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
5114 | ||
5115 | static struct partial_die_info * | |
5116 | load_partial_dies (bfd *abfd, char *info_ptr, int building_psymtab, | |
5117 | struct dwarf2_cu *cu) | |
5118 | { | |
5119 | struct partial_die_info *part_die; | |
5120 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
5121 | struct abbrev_info *abbrev; | |
5122 | unsigned int bytes_read; | |
5123 | ||
5124 | int nesting_level = 1; | |
5125 | ||
5126 | parent_die = NULL; | |
5127 | last_die = NULL; | |
5128 | ||
5129 | cu->partial_dies | |
5130 | = htab_create_alloc_ex (cu->header.length / 12, | |
5131 | partial_die_hash, | |
5132 | partial_die_eq, | |
5133 | NULL, | |
5134 | &cu->comp_unit_obstack, | |
5135 | hashtab_obstack_allocate, | |
5136 | dummy_obstack_deallocate); | |
5137 | ||
5138 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5139 | sizeof (struct partial_die_info)); | |
5140 | ||
5141 | while (1) | |
5142 | { | |
5143 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5144 | ||
5145 | /* A NULL abbrev means the end of a series of children. */ | |
5146 | if (abbrev == NULL) | |
5147 | { | |
5148 | if (--nesting_level == 0) | |
5149 | { | |
5150 | /* PART_DIE was probably the last thing allocated on the | |
5151 | comp_unit_obstack, so we could call obstack_free | |
5152 | here. We don't do that because the waste is small, | |
5153 | and will be cleaned up when we're done with this | |
5154 | compilation unit. This way, we're also more robust | |
5155 | against other users of the comp_unit_obstack. */ | |
5156 | return first_die; | |
5157 | } | |
5158 | info_ptr += bytes_read; | |
5159 | last_die = parent_die; | |
5160 | parent_die = parent_die->die_parent; | |
5161 | continue; | |
5162 | } | |
5163 | ||
5164 | /* Check whether this DIE is interesting enough to save. */ | |
5165 | if (!is_type_tag_for_partial (abbrev->tag) | |
5166 | && abbrev->tag != DW_TAG_enumerator | |
5167 | && abbrev->tag != DW_TAG_subprogram | |
5168 | && abbrev->tag != DW_TAG_variable | |
5169 | && abbrev->tag != DW_TAG_namespace) | |
5170 | { | |
5171 | /* Otherwise we skip to the next sibling, if any. */ | |
5172 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
5173 | continue; | |
5174 | } | |
5175 | ||
5176 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, | |
5177 | abfd, info_ptr, cu); | |
5178 | ||
5179 | /* This two-pass algorithm for processing partial symbols has a | |
5180 | high cost in cache pressure. Thus, handle some simple cases | |
5181 | here which cover the majority of C partial symbols. DIEs | |
5182 | which neither have specification tags in them, nor could have | |
5183 | specification tags elsewhere pointing at them, can simply be | |
5184 | processed and discarded. | |
5185 | ||
5186 | This segment is also optional; scan_partial_symbols and | |
5187 | add_partial_symbol will handle these DIEs if we chain | |
5188 | them in normally. When compilers which do not emit large | |
5189 | quantities of duplicate debug information are more common, | |
5190 | this code can probably be removed. */ | |
5191 | ||
5192 | /* Any complete simple types at the top level (pretty much all | |
5193 | of them, for a language without namespaces), can be processed | |
5194 | directly. */ | |
5195 | if (parent_die == NULL | |
5196 | && part_die->has_specification == 0 | |
5197 | && part_die->is_declaration == 0 | |
5198 | && (part_die->tag == DW_TAG_typedef | |
5199 | || part_die->tag == DW_TAG_base_type | |
5200 | || part_die->tag == DW_TAG_subrange_type)) | |
5201 | { | |
5202 | if (building_psymtab && part_die->name != NULL) | |
5203 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5204 | VAR_DOMAIN, LOC_TYPEDEF, | |
5205 | &cu->objfile->static_psymbols, | |
5206 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5207 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5208 | continue; | |
5209 | } | |
5210 | ||
5211 | /* If we're at the second level, and we're an enumerator, and | |
5212 | our parent has no specification (meaning possibly lives in a | |
5213 | namespace elsewhere), then we can add the partial symbol now | |
5214 | instead of queueing it. */ | |
5215 | if (part_die->tag == DW_TAG_enumerator | |
5216 | && parent_die != NULL | |
5217 | && parent_die->die_parent == NULL | |
5218 | && parent_die->tag == DW_TAG_enumeration_type | |
5219 | && parent_die->has_specification == 0) | |
5220 | { | |
5221 | if (part_die->name == NULL) | |
5222 | complaint (&symfile_complaints, "malformed enumerator DIE ignored"); | |
5223 | else if (building_psymtab) | |
5224 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5225 | VAR_DOMAIN, LOC_CONST, | |
987504bb JJ |
5226 | (cu->language == language_cplus |
5227 | || cu->language == language_java) | |
72bf9492 DJ |
5228 | ? &cu->objfile->global_psymbols |
5229 | : &cu->objfile->static_psymbols, | |
5230 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5231 | ||
5232 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5233 | continue; | |
5234 | } | |
5235 | ||
5236 | /* We'll save this DIE so link it in. */ | |
5237 | part_die->die_parent = parent_die; | |
5238 | part_die->die_sibling = NULL; | |
5239 | part_die->die_child = NULL; | |
5240 | ||
5241 | if (last_die && last_die == parent_die) | |
5242 | last_die->die_child = part_die; | |
5243 | else if (last_die) | |
5244 | last_die->die_sibling = part_die; | |
5245 | ||
5246 | last_die = part_die; | |
5247 | ||
5248 | if (first_die == NULL) | |
5249 | first_die = part_die; | |
5250 | ||
5251 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
5252 | find interesting need to be in the hash table, because we | |
5253 | also have the parent/sibling/child chains; only those that we | |
5254 | might refer to by offset later during partial symbol reading. | |
5255 | ||
5256 | For now this means things that might have be the target of a | |
5257 | DW_AT_specification, DW_AT_abstract_origin, or | |
5258 | DW_AT_extension. DW_AT_extension will refer only to | |
5259 | namespaces; DW_AT_abstract_origin refers to functions (and | |
5260 | many things under the function DIE, but we do not recurse | |
5261 | into function DIEs during partial symbol reading) and | |
5262 | possibly variables as well; DW_AT_specification refers to | |
5263 | declarations. Declarations ought to have the DW_AT_declaration | |
5264 | flag. It happens that GCC forgets to put it in sometimes, but | |
5265 | only for functions, not for types. | |
5266 | ||
5267 | Adding more things than necessary to the hash table is harmless | |
5268 | except for the performance cost. Adding too few will result in | |
5269 | internal errors in find_partial_die. */ | |
5270 | ||
5271 | if (abbrev->tag == DW_TAG_subprogram | |
5272 | || abbrev->tag == DW_TAG_variable | |
5273 | || abbrev->tag == DW_TAG_namespace | |
5274 | || part_die->is_declaration) | |
5275 | { | |
5276 | void **slot; | |
5277 | ||
5278 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
5279 | part_die->offset, INSERT); | |
5280 | *slot = part_die; | |
5281 | } | |
5282 | ||
5283 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5284 | sizeof (struct partial_die_info)); | |
5285 | ||
5286 | /* For some DIEs we want to follow their children (if any). For C | |
5287 | we have no reason to follow the children of structures; for other | |
5288 | languages we have to, both so that we can get at method physnames | |
5289 | to infer fully qualified class names, and for DW_AT_specification. */ | |
5290 | if (last_die->has_children | |
5291 | && (last_die->tag == DW_TAG_namespace | |
5292 | || last_die->tag == DW_TAG_enumeration_type | |
5293 | || (cu->language != language_c | |
5294 | && (last_die->tag == DW_TAG_class_type | |
5295 | || last_die->tag == DW_TAG_structure_type | |
5296 | || last_die->tag == DW_TAG_union_type)))) | |
5297 | { | |
5298 | nesting_level++; | |
5299 | parent_die = last_die; | |
5300 | continue; | |
5301 | } | |
5302 | ||
5303 | /* Otherwise we skip to the next sibling, if any. */ | |
5304 | info_ptr = locate_pdi_sibling (last_die, info_ptr, abfd, cu); | |
5305 | ||
5306 | /* Back to the top, do it again. */ | |
5307 | } | |
5308 | } | |
5309 | ||
c906108c SS |
5310 | /* Read a minimal amount of information into the minimal die structure. */ |
5311 | ||
5312 | static char * | |
72bf9492 DJ |
5313 | read_partial_die (struct partial_die_info *part_die, |
5314 | struct abbrev_info *abbrev, | |
5315 | unsigned int abbrev_len, bfd *abfd, | |
e7c27a73 | 5316 | char *info_ptr, struct dwarf2_cu *cu) |
c906108c | 5317 | { |
72bf9492 | 5318 | unsigned int bytes_read, i; |
c906108c | 5319 | struct attribute attr; |
c5aa993b | 5320 | int has_low_pc_attr = 0; |
c906108c SS |
5321 | int has_high_pc_attr = 0; |
5322 | ||
72bf9492 | 5323 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 5324 | |
6502dd73 | 5325 | part_die->offset = info_ptr - dwarf2_per_objfile->info_buffer; |
72bf9492 DJ |
5326 | |
5327 | info_ptr += abbrev_len; | |
5328 | ||
5329 | if (abbrev == NULL) | |
5330 | return info_ptr; | |
5331 | ||
c906108c SS |
5332 | part_die->tag = abbrev->tag; |
5333 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
5334 | |
5335 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5336 | { | |
e7c27a73 | 5337 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
5338 | |
5339 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 5340 | partial symbol table. */ |
c906108c SS |
5341 | switch (attr.name) |
5342 | { | |
5343 | case DW_AT_name: | |
5344 | ||
5345 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
5346 | if (part_die->name == NULL) | |
5347 | part_die->name = DW_STRING (&attr); | |
5348 | break; | |
57c22c6c BR |
5349 | case DW_AT_comp_dir: |
5350 | if (part_die->dirname == NULL) | |
5351 | part_die->dirname = DW_STRING (&attr); | |
5352 | break; | |
c906108c SS |
5353 | case DW_AT_MIPS_linkage_name: |
5354 | part_die->name = DW_STRING (&attr); | |
5355 | break; | |
5356 | case DW_AT_low_pc: | |
5357 | has_low_pc_attr = 1; | |
5358 | part_die->lowpc = DW_ADDR (&attr); | |
5359 | break; | |
5360 | case DW_AT_high_pc: | |
5361 | has_high_pc_attr = 1; | |
5362 | part_die->highpc = DW_ADDR (&attr); | |
5363 | break; | |
5364 | case DW_AT_location: | |
8e19ed76 PS |
5365 | /* Support the .debug_loc offsets */ |
5366 | if (attr_form_is_block (&attr)) | |
5367 | { | |
5368 | part_die->locdesc = DW_BLOCK (&attr); | |
5369 | } | |
5370 | else if (attr.form == DW_FORM_data4 || attr.form == DW_FORM_data8) | |
5371 | { | |
4d3c2250 | 5372 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5373 | } |
5374 | else | |
5375 | { | |
4d3c2250 KB |
5376 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
5377 | "partial symbol information"); | |
8e19ed76 | 5378 | } |
c906108c SS |
5379 | break; |
5380 | case DW_AT_language: | |
5381 | part_die->language = DW_UNSND (&attr); | |
5382 | break; | |
5383 | case DW_AT_external: | |
5384 | part_die->is_external = DW_UNSND (&attr); | |
5385 | break; | |
5386 | case DW_AT_declaration: | |
5387 | part_die->is_declaration = DW_UNSND (&attr); | |
5388 | break; | |
5389 | case DW_AT_type: | |
5390 | part_die->has_type = 1; | |
5391 | break; | |
5392 | case DW_AT_abstract_origin: | |
5393 | case DW_AT_specification: | |
72bf9492 DJ |
5394 | case DW_AT_extension: |
5395 | part_die->has_specification = 1; | |
5396 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c SS |
5397 | break; |
5398 | case DW_AT_sibling: | |
5399 | /* Ignore absolute siblings, they might point outside of | |
5400 | the current compile unit. */ | |
5401 | if (attr.form == DW_FORM_ref_addr) | |
4d3c2250 | 5402 | complaint (&symfile_complaints, "ignoring absolute DW_AT_sibling"); |
c906108c | 5403 | else |
6502dd73 DJ |
5404 | part_die->sibling = dwarf2_per_objfile->info_buffer |
5405 | + dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c | 5406 | break; |
aaa75496 JB |
5407 | case DW_AT_stmt_list: |
5408 | part_die->has_stmt_list = 1; | |
5409 | part_die->line_offset = DW_UNSND (&attr); | |
5410 | break; | |
c906108c SS |
5411 | default: |
5412 | break; | |
5413 | } | |
5414 | } | |
5415 | ||
c906108c SS |
5416 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
5417 | eliminate duplicate copies of functions and vtables and such. | |
5418 | The linker will arbitrarily choose one and discard the others. | |
5419 | The AT_*_pc values for such functions refer to local labels in | |
5420 | these sections. If the section from that file was discarded, the | |
5421 | labels are not in the output, so the relocs get a value of 0. | |
5422 | If this is a discarded function, mark the pc bounds as invalid, | |
5423 | so that GDB will ignore it. */ | |
5424 | if (has_low_pc_attr && has_high_pc_attr | |
5425 | && part_die->lowpc < part_die->highpc | |
5426 | && (part_die->lowpc != 0 | |
5427 | || (bfd_get_file_flags (abfd) & HAS_RELOC))) | |
0b010bcc | 5428 | part_die->has_pc_info = 1; |
c906108c SS |
5429 | return info_ptr; |
5430 | } | |
5431 | ||
72bf9492 DJ |
5432 | /* Find a cached partial DIE at OFFSET in CU. */ |
5433 | ||
5434 | static struct partial_die_info * | |
5435 | find_partial_die_in_comp_unit (unsigned long offset, struct dwarf2_cu *cu) | |
5436 | { | |
5437 | struct partial_die_info *lookup_die = NULL; | |
5438 | struct partial_die_info part_die; | |
5439 | ||
5440 | part_die.offset = offset; | |
5441 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
5442 | ||
5443 | if (lookup_die == NULL) | |
5444 | internal_error (__FILE__, __LINE__, | |
5445 | "could not find partial DIE in cache\n"); | |
5446 | ||
5447 | return lookup_die; | |
5448 | } | |
5449 | ||
5450 | /* Find a partial DIE at OFFSET, which may or may not be in CU. */ | |
5451 | ||
5452 | static struct partial_die_info * | |
10b3939b | 5453 | find_partial_die (unsigned long offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
5454 | { |
5455 | struct dwarf2_per_cu_data *per_cu; | |
5456 | ||
5457 | if (offset >= cu->header.offset | |
5458 | && offset < cu->header.offset + cu->header.length) | |
10b3939b | 5459 | return find_partial_die_in_comp_unit (offset, cu); |
72bf9492 | 5460 | |
ae038cb0 DJ |
5461 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
5462 | ||
ae038cb0 DJ |
5463 | if (per_cu->cu == NULL) |
5464 | { | |
5465 | load_comp_unit (per_cu, cu->objfile); | |
5466 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5467 | dwarf2_per_objfile->read_in_chain = per_cu; | |
5468 | } | |
5469 | ||
5470 | per_cu->cu->last_used = 0; | |
ae038cb0 | 5471 | return find_partial_die_in_comp_unit (offset, per_cu->cu); |
72bf9492 DJ |
5472 | } |
5473 | ||
5474 | /* Adjust PART_DIE before generating a symbol for it. This function | |
5475 | may set the is_external flag or change the DIE's name. */ | |
5476 | ||
5477 | static void | |
5478 | fixup_partial_die (struct partial_die_info *part_die, | |
5479 | struct dwarf2_cu *cu) | |
5480 | { | |
5481 | /* If we found a reference attribute and the DIE has no name, try | |
5482 | to find a name in the referred to DIE. */ | |
5483 | ||
5484 | if (part_die->name == NULL && part_die->has_specification) | |
5485 | { | |
5486 | struct partial_die_info *spec_die; | |
72bf9492 | 5487 | |
10b3939b | 5488 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 5489 | |
10b3939b | 5490 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
5491 | |
5492 | if (spec_die->name) | |
5493 | { | |
5494 | part_die->name = spec_die->name; | |
5495 | ||
5496 | /* Copy DW_AT_external attribute if it is set. */ | |
5497 | if (spec_die->is_external) | |
5498 | part_die->is_external = spec_die->is_external; | |
5499 | } | |
5500 | } | |
5501 | ||
5502 | /* Set default names for some unnamed DIEs. */ | |
5503 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
5504 | || part_die->tag == DW_TAG_class_type)) | |
5505 | part_die->name = "(anonymous class)"; | |
5506 | ||
5507 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
5508 | part_die->name = "(anonymous namespace)"; | |
5509 | ||
5510 | if (part_die->tag == DW_TAG_structure_type | |
5511 | || part_die->tag == DW_TAG_class_type | |
5512 | || part_die->tag == DW_TAG_union_type) | |
5513 | guess_structure_name (part_die, cu); | |
5514 | } | |
5515 | ||
639d11d3 DC |
5516 | /* Read the die from the .debug_info section buffer. Set DIEP to |
5517 | point to a newly allocated die with its information, except for its | |
5518 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
5519 | whether the die has children or not. */ | |
c906108c SS |
5520 | |
5521 | static char * | |
107d2387 | 5522 | read_full_die (struct die_info **diep, bfd *abfd, char *info_ptr, |
e7c27a73 | 5523 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
5524 | { |
5525 | unsigned int abbrev_number, bytes_read, i, offset; | |
5526 | struct abbrev_info *abbrev; | |
5527 | struct die_info *die; | |
5528 | ||
6502dd73 | 5529 | offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
5530 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5531 | info_ptr += bytes_read; | |
5532 | if (!abbrev_number) | |
5533 | { | |
5534 | die = dwarf_alloc_die (); | |
5535 | die->tag = 0; | |
5536 | die->abbrev = abbrev_number; | |
5537 | die->type = NULL; | |
5538 | *diep = die; | |
639d11d3 | 5539 | *has_children = 0; |
c906108c SS |
5540 | return info_ptr; |
5541 | } | |
5542 | ||
e7c27a73 | 5543 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
5544 | if (!abbrev) |
5545 | { | |
639d11d3 | 5546 | error ("Dwarf Error: could not find abbrev number %d [in module %s]", |
72bf9492 | 5547 | abbrev_number, |
639d11d3 | 5548 | bfd_get_filename (abfd)); |
c906108c SS |
5549 | } |
5550 | die = dwarf_alloc_die (); | |
5551 | die->offset = offset; | |
5552 | die->tag = abbrev->tag; | |
c906108c SS |
5553 | die->abbrev = abbrev_number; |
5554 | die->type = NULL; | |
5555 | ||
5556 | die->num_attrs = abbrev->num_attrs; | |
5557 | die->attrs = (struct attribute *) | |
5558 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
5559 | ||
5560 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5561 | { | |
5562 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 5563 | abfd, info_ptr, cu); |
10b3939b DJ |
5564 | |
5565 | /* If this attribute is an absolute reference to a different | |
5566 | compilation unit, make sure that compilation unit is loaded | |
5567 | also. */ | |
5568 | if (die->attrs[i].form == DW_FORM_ref_addr | |
5569 | && (DW_ADDR (&die->attrs[i]) < cu->header.offset | |
5570 | || (DW_ADDR (&die->attrs[i]) | |
5571 | >= cu->header.offset + cu->header.length))) | |
5572 | { | |
5573 | struct dwarf2_per_cu_data *per_cu; | |
5574 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (&die->attrs[i]), | |
5575 | cu->objfile); | |
5576 | ||
5577 | /* Mark the dependence relation so that we don't flush PER_CU | |
5578 | too early. */ | |
5579 | dwarf2_add_dependence (cu, per_cu); | |
5580 | ||
5581 | /* If it's already on the queue, we have nothing to do. */ | |
5582 | if (per_cu->queued) | |
5583 | continue; | |
5584 | ||
5585 | /* If the compilation unit is already loaded, just mark it as | |
5586 | used. */ | |
5587 | if (per_cu->cu != NULL) | |
5588 | { | |
5589 | per_cu->cu->last_used = 0; | |
5590 | continue; | |
5591 | } | |
5592 | ||
5593 | /* Add it to the queue. */ | |
5594 | queue_comp_unit (per_cu); | |
5595 | } | |
c906108c SS |
5596 | } |
5597 | ||
5598 | *diep = die; | |
639d11d3 | 5599 | *has_children = abbrev->has_children; |
c906108c SS |
5600 | return info_ptr; |
5601 | } | |
5602 | ||
a8329558 | 5603 | /* Read an attribute value described by an attribute form. */ |
c906108c SS |
5604 | |
5605 | static char * | |
a8329558 | 5606 | read_attribute_value (struct attribute *attr, unsigned form, |
e7c27a73 DJ |
5607 | bfd *abfd, char *info_ptr, |
5608 | struct dwarf2_cu *cu) | |
c906108c | 5609 | { |
e7c27a73 | 5610 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5611 | unsigned int bytes_read; |
5612 | struct dwarf_block *blk; | |
5613 | ||
a8329558 KW |
5614 | attr->form = form; |
5615 | switch (form) | |
c906108c SS |
5616 | { |
5617 | case DW_FORM_addr: | |
5618 | case DW_FORM_ref_addr: | |
e7c27a73 | 5619 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 5620 | info_ptr += bytes_read; |
c906108c SS |
5621 | break; |
5622 | case DW_FORM_block2: | |
7b5a2f43 | 5623 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5624 | blk->size = read_2_bytes (abfd, info_ptr); |
5625 | info_ptr += 2; | |
5626 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5627 | info_ptr += blk->size; | |
5628 | DW_BLOCK (attr) = blk; | |
5629 | break; | |
5630 | case DW_FORM_block4: | |
7b5a2f43 | 5631 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5632 | blk->size = read_4_bytes (abfd, info_ptr); |
5633 | info_ptr += 4; | |
5634 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5635 | info_ptr += blk->size; | |
5636 | DW_BLOCK (attr) = blk; | |
5637 | break; | |
5638 | case DW_FORM_data2: | |
5639 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
5640 | info_ptr += 2; | |
5641 | break; | |
5642 | case DW_FORM_data4: | |
5643 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
5644 | info_ptr += 4; | |
5645 | break; | |
5646 | case DW_FORM_data8: | |
5647 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
5648 | info_ptr += 8; | |
5649 | break; | |
5650 | case DW_FORM_string: | |
5651 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
5652 | info_ptr += bytes_read; | |
5653 | break; | |
4bdf3d34 JJ |
5654 | case DW_FORM_strp: |
5655 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
5656 | &bytes_read); | |
5657 | info_ptr += bytes_read; | |
5658 | break; | |
c906108c | 5659 | case DW_FORM_block: |
7b5a2f43 | 5660 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5661 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5662 | info_ptr += bytes_read; | |
5663 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5664 | info_ptr += blk->size; | |
5665 | DW_BLOCK (attr) = blk; | |
5666 | break; | |
5667 | case DW_FORM_block1: | |
7b5a2f43 | 5668 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5669 | blk->size = read_1_byte (abfd, info_ptr); |
5670 | info_ptr += 1; | |
5671 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5672 | info_ptr += blk->size; | |
5673 | DW_BLOCK (attr) = blk; | |
5674 | break; | |
5675 | case DW_FORM_data1: | |
5676 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
5677 | info_ptr += 1; | |
5678 | break; | |
5679 | case DW_FORM_flag: | |
5680 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
5681 | info_ptr += 1; | |
5682 | break; | |
5683 | case DW_FORM_sdata: | |
5684 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
5685 | info_ptr += bytes_read; | |
5686 | break; | |
5687 | case DW_FORM_udata: | |
5688 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5689 | info_ptr += bytes_read; | |
5690 | break; | |
5691 | case DW_FORM_ref1: | |
10b3939b | 5692 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
5693 | info_ptr += 1; |
5694 | break; | |
5695 | case DW_FORM_ref2: | |
10b3939b | 5696 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
5697 | info_ptr += 2; |
5698 | break; | |
5699 | case DW_FORM_ref4: | |
10b3939b | 5700 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
5701 | info_ptr += 4; |
5702 | break; | |
613e1657 | 5703 | case DW_FORM_ref8: |
10b3939b | 5704 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
5705 | info_ptr += 8; |
5706 | break; | |
c906108c | 5707 | case DW_FORM_ref_udata: |
10b3939b DJ |
5708 | DW_ADDR (attr) = (cu->header.offset |
5709 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
5710 | info_ptr += bytes_read; |
5711 | break; | |
c906108c | 5712 | case DW_FORM_indirect: |
a8329558 KW |
5713 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5714 | info_ptr += bytes_read; | |
e7c27a73 | 5715 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 5716 | break; |
c906108c | 5717 | default: |
659b0389 ML |
5718 | error ("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]", |
5719 | dwarf_form_name (form), | |
5720 | bfd_get_filename (abfd)); | |
c906108c SS |
5721 | } |
5722 | return info_ptr; | |
5723 | } | |
5724 | ||
a8329558 KW |
5725 | /* Read an attribute described by an abbreviated attribute. */ |
5726 | ||
5727 | static char * | |
5728 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, | |
e7c27a73 | 5729 | bfd *abfd, char *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
5730 | { |
5731 | attr->name = abbrev->name; | |
e7c27a73 | 5732 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
5733 | } |
5734 | ||
c906108c SS |
5735 | /* read dwarf information from a buffer */ |
5736 | ||
5737 | static unsigned int | |
fba45db2 | 5738 | read_1_byte (bfd *abfd, char *buf) |
c906108c SS |
5739 | { |
5740 | return bfd_get_8 (abfd, (bfd_byte *) buf); | |
5741 | } | |
5742 | ||
5743 | static int | |
fba45db2 | 5744 | read_1_signed_byte (bfd *abfd, char *buf) |
c906108c SS |
5745 | { |
5746 | return bfd_get_signed_8 (abfd, (bfd_byte *) buf); | |
5747 | } | |
5748 | ||
5749 | static unsigned int | |
fba45db2 | 5750 | read_2_bytes (bfd *abfd, char *buf) |
c906108c SS |
5751 | { |
5752 | return bfd_get_16 (abfd, (bfd_byte *) buf); | |
5753 | } | |
5754 | ||
5755 | static int | |
fba45db2 | 5756 | read_2_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
5757 | { |
5758 | return bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
5759 | } | |
5760 | ||
5761 | static unsigned int | |
fba45db2 | 5762 | read_4_bytes (bfd *abfd, char *buf) |
c906108c SS |
5763 | { |
5764 | return bfd_get_32 (abfd, (bfd_byte *) buf); | |
5765 | } | |
5766 | ||
5767 | static int | |
fba45db2 | 5768 | read_4_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
5769 | { |
5770 | return bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
5771 | } | |
5772 | ||
ce5d95e1 | 5773 | static unsigned long |
fba45db2 | 5774 | read_8_bytes (bfd *abfd, char *buf) |
c906108c SS |
5775 | { |
5776 | return bfd_get_64 (abfd, (bfd_byte *) buf); | |
5777 | } | |
5778 | ||
5779 | static CORE_ADDR | |
e7c27a73 | 5780 | read_address (bfd *abfd, char *buf, struct dwarf2_cu *cu, int *bytes_read) |
c906108c | 5781 | { |
e7c27a73 | 5782 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5783 | CORE_ADDR retval = 0; |
5784 | ||
107d2387 | 5785 | if (cu_header->signed_addr_p) |
c906108c | 5786 | { |
107d2387 AC |
5787 | switch (cu_header->addr_size) |
5788 | { | |
5789 | case 2: | |
5790 | retval = bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
5791 | break; | |
5792 | case 4: | |
5793 | retval = bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
5794 | break; | |
5795 | case 8: | |
5796 | retval = bfd_get_signed_64 (abfd, (bfd_byte *) buf); | |
5797 | break; | |
5798 | default: | |
8e65ff28 | 5799 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
5800 | "read_address: bad switch, signed [in module %s]", |
5801 | bfd_get_filename (abfd)); | |
107d2387 AC |
5802 | } |
5803 | } | |
5804 | else | |
5805 | { | |
5806 | switch (cu_header->addr_size) | |
5807 | { | |
5808 | case 2: | |
5809 | retval = bfd_get_16 (abfd, (bfd_byte *) buf); | |
5810 | break; | |
5811 | case 4: | |
5812 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
5813 | break; | |
5814 | case 8: | |
5815 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
5816 | break; | |
5817 | default: | |
8e65ff28 | 5818 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
5819 | "read_address: bad switch, unsigned [in module %s]", |
5820 | bfd_get_filename (abfd)); | |
107d2387 | 5821 | } |
c906108c | 5822 | } |
64367e0a | 5823 | |
107d2387 AC |
5824 | *bytes_read = cu_header->addr_size; |
5825 | return retval; | |
c906108c SS |
5826 | } |
5827 | ||
f7ef9339 | 5828 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
5829 | specification allows the initial length to take up either 4 bytes |
5830 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
5831 | bytes describe the length and all offsets will be 8 bytes in length | |
5832 | instead of 4. | |
5833 | ||
f7ef9339 KB |
5834 | An older, non-standard 64-bit format is also handled by this |
5835 | function. The older format in question stores the initial length | |
5836 | as an 8-byte quantity without an escape value. Lengths greater | |
5837 | than 2^32 aren't very common which means that the initial 4 bytes | |
5838 | is almost always zero. Since a length value of zero doesn't make | |
5839 | sense for the 32-bit format, this initial zero can be considered to | |
5840 | be an escape value which indicates the presence of the older 64-bit | |
5841 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
5842 | greater than 4GB. If it becomes necessary to handle lengths |
5843 | somewhat larger than 4GB, we could allow other small values (such | |
5844 | as the non-sensical values of 1, 2, and 3) to also be used as | |
5845 | escape values indicating the presence of the old format. | |
f7ef9339 | 5846 | |
917c78fc MK |
5847 | The value returned via bytes_read should be used to increment the |
5848 | relevant pointer after calling read_initial_length(). | |
613e1657 KB |
5849 | |
5850 | As a side effect, this function sets the fields initial_length_size | |
5851 | and offset_size in cu_header to the values appropriate for the | |
5852 | length field. (The format of the initial length field determines | |
5853 | the width of file offsets to be fetched later with fetch_offset().) | |
5854 | ||
5855 | [ Note: read_initial_length() and read_offset() are based on the | |
5856 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 5857 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
5858 | from: |
5859 | ||
f7ef9339 | 5860 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
5861 | |
5862 | This document is only a draft and is subject to change. (So beware.) | |
5863 | ||
f7ef9339 | 5864 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
5865 | determined empirically by examining 64-bit ELF files produced by |
5866 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
5867 | |
5868 | - Kevin, July 16, 2002 | |
613e1657 KB |
5869 | ] */ |
5870 | ||
5871 | static LONGEST | |
5872 | read_initial_length (bfd *abfd, char *buf, struct comp_unit_head *cu_header, | |
5873 | int *bytes_read) | |
5874 | { | |
5875 | LONGEST retval = 0; | |
5876 | ||
5877 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
5878 | ||
5879 | if (retval == 0xffffffff) | |
5880 | { | |
5881 | retval = bfd_get_64 (abfd, (bfd_byte *) buf + 4); | |
5882 | *bytes_read = 12; | |
5883 | if (cu_header != NULL) | |
5884 | { | |
5885 | cu_header->initial_length_size = 12; | |
5886 | cu_header->offset_size = 8; | |
5887 | } | |
5888 | } | |
f7ef9339 KB |
5889 | else if (retval == 0) |
5890 | { | |
5891 | /* Handle (non-standard) 64-bit DWARF2 formats such as that used | |
5892 | by IRIX. */ | |
5893 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
5894 | *bytes_read = 8; | |
5895 | if (cu_header != NULL) | |
5896 | { | |
5897 | cu_header->initial_length_size = 8; | |
5898 | cu_header->offset_size = 8; | |
5899 | } | |
5900 | } | |
613e1657 KB |
5901 | else |
5902 | { | |
5903 | *bytes_read = 4; | |
5904 | if (cu_header != NULL) | |
5905 | { | |
5906 | cu_header->initial_length_size = 4; | |
5907 | cu_header->offset_size = 4; | |
5908 | } | |
5909 | } | |
5910 | ||
917c78fc | 5911 | return retval; |
613e1657 KB |
5912 | } |
5913 | ||
5914 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 5915 | given by cu_header->offset_size. */ |
613e1657 KB |
5916 | |
5917 | static LONGEST | |
5918 | read_offset (bfd *abfd, char *buf, const struct comp_unit_head *cu_header, | |
5919 | int *bytes_read) | |
5920 | { | |
5921 | LONGEST retval = 0; | |
5922 | ||
5923 | switch (cu_header->offset_size) | |
5924 | { | |
5925 | case 4: | |
5926 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
5927 | *bytes_read = 4; | |
5928 | break; | |
5929 | case 8: | |
5930 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
5931 | *bytes_read = 8; | |
5932 | break; | |
5933 | default: | |
8e65ff28 | 5934 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
5935 | "read_offset: bad switch [in module %s]", |
5936 | bfd_get_filename (abfd)); | |
613e1657 KB |
5937 | } |
5938 | ||
917c78fc | 5939 | return retval; |
613e1657 KB |
5940 | } |
5941 | ||
c906108c | 5942 | static char * |
fba45db2 | 5943 | read_n_bytes (bfd *abfd, char *buf, unsigned int size) |
c906108c SS |
5944 | { |
5945 | /* If the size of a host char is 8 bits, we can return a pointer | |
5946 | to the buffer, otherwise we have to copy the data to a buffer | |
5947 | allocated on the temporary obstack. */ | |
4bdf3d34 | 5948 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 5949 | return buf; |
c906108c SS |
5950 | } |
5951 | ||
5952 | static char * | |
fba45db2 | 5953 | read_string (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
5954 | { |
5955 | /* If the size of a host char is 8 bits, we can return a pointer | |
5956 | to the string, otherwise we have to copy the string to a buffer | |
5957 | allocated on the temporary obstack. */ | |
4bdf3d34 | 5958 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
5959 | if (*buf == '\0') |
5960 | { | |
5961 | *bytes_read_ptr = 1; | |
5962 | return NULL; | |
5963 | } | |
5964 | *bytes_read_ptr = strlen (buf) + 1; | |
5965 | return buf; | |
4bdf3d34 JJ |
5966 | } |
5967 | ||
5968 | static char * | |
5969 | read_indirect_string (bfd *abfd, char *buf, | |
5970 | const struct comp_unit_head *cu_header, | |
5971 | unsigned int *bytes_read_ptr) | |
5972 | { | |
5973 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
5974 | (int *) bytes_read_ptr); | |
c906108c | 5975 | |
6502dd73 | 5976 | if (dwarf2_per_objfile->str_buffer == NULL) |
c906108c | 5977 | { |
659b0389 ML |
5978 | error ("DW_FORM_strp used without .debug_str section [in module %s]", |
5979 | bfd_get_filename (abfd)); | |
4bdf3d34 | 5980 | return NULL; |
c906108c | 5981 | } |
6502dd73 | 5982 | if (str_offset >= dwarf2_per_objfile->str_size) |
c906108c | 5983 | { |
659b0389 ML |
5984 | error ("DW_FORM_strp pointing outside of .debug_str section [in module %s]", |
5985 | bfd_get_filename (abfd)); | |
c906108c SS |
5986 | return NULL; |
5987 | } | |
4bdf3d34 | 5988 | gdb_assert (HOST_CHAR_BIT == 8); |
6502dd73 | 5989 | if (dwarf2_per_objfile->str_buffer[str_offset] == '\0') |
4bdf3d34 | 5990 | return NULL; |
6502dd73 | 5991 | return dwarf2_per_objfile->str_buffer + str_offset; |
c906108c SS |
5992 | } |
5993 | ||
ce5d95e1 | 5994 | static unsigned long |
fba45db2 | 5995 | read_unsigned_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 5996 | { |
ce5d95e1 JB |
5997 | unsigned long result; |
5998 | unsigned int num_read; | |
c906108c SS |
5999 | int i, shift; |
6000 | unsigned char byte; | |
6001 | ||
6002 | result = 0; | |
6003 | shift = 0; | |
6004 | num_read = 0; | |
6005 | i = 0; | |
6006 | while (1) | |
6007 | { | |
6008 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
6009 | buf++; | |
6010 | num_read++; | |
ce5d95e1 | 6011 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
6012 | if ((byte & 128) == 0) |
6013 | { | |
6014 | break; | |
6015 | } | |
6016 | shift += 7; | |
6017 | } | |
6018 | *bytes_read_ptr = num_read; | |
6019 | return result; | |
6020 | } | |
6021 | ||
ce5d95e1 | 6022 | static long |
fba45db2 | 6023 | read_signed_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 6024 | { |
ce5d95e1 | 6025 | long result; |
c906108c SS |
6026 | int i, shift, size, num_read; |
6027 | unsigned char byte; | |
6028 | ||
6029 | result = 0; | |
6030 | shift = 0; | |
6031 | size = 32; | |
6032 | num_read = 0; | |
6033 | i = 0; | |
6034 | while (1) | |
6035 | { | |
6036 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
6037 | buf++; | |
6038 | num_read++; | |
ce5d95e1 | 6039 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
6040 | shift += 7; |
6041 | if ((byte & 128) == 0) | |
6042 | { | |
6043 | break; | |
6044 | } | |
6045 | } | |
6046 | if ((shift < size) && (byte & 0x40)) | |
6047 | { | |
6048 | result |= -(1 << shift); | |
6049 | } | |
6050 | *bytes_read_ptr = num_read; | |
6051 | return result; | |
6052 | } | |
6053 | ||
4bb7a0a7 DJ |
6054 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
6055 | ||
6056 | static char * | |
6057 | skip_leb128 (bfd *abfd, char *buf) | |
6058 | { | |
6059 | int byte; | |
6060 | ||
6061 | while (1) | |
6062 | { | |
6063 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
6064 | buf++; | |
6065 | if ((byte & 128) == 0) | |
6066 | return buf; | |
6067 | } | |
6068 | } | |
6069 | ||
c906108c | 6070 | static void |
e142c38c | 6071 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
6072 | { |
6073 | switch (lang) | |
6074 | { | |
6075 | case DW_LANG_C89: | |
6076 | case DW_LANG_C: | |
e142c38c | 6077 | cu->language = language_c; |
c906108c SS |
6078 | break; |
6079 | case DW_LANG_C_plus_plus: | |
e142c38c | 6080 | cu->language = language_cplus; |
c906108c SS |
6081 | break; |
6082 | case DW_LANG_Fortran77: | |
6083 | case DW_LANG_Fortran90: | |
b21b22e0 | 6084 | case DW_LANG_Fortran95: |
e142c38c | 6085 | cu->language = language_fortran; |
c906108c SS |
6086 | break; |
6087 | case DW_LANG_Mips_Assembler: | |
e142c38c | 6088 | cu->language = language_asm; |
c906108c | 6089 | break; |
bebd888e | 6090 | case DW_LANG_Java: |
e142c38c | 6091 | cu->language = language_java; |
bebd888e | 6092 | break; |
c906108c | 6093 | case DW_LANG_Ada83: |
8aaf0b47 | 6094 | case DW_LANG_Ada95: |
bc5f45f8 JB |
6095 | cu->language = language_ada; |
6096 | break; | |
c906108c SS |
6097 | case DW_LANG_Cobol74: |
6098 | case DW_LANG_Cobol85: | |
6099 | case DW_LANG_Pascal83: | |
6100 | case DW_LANG_Modula2: | |
6101 | default: | |
e142c38c | 6102 | cu->language = language_minimal; |
c906108c SS |
6103 | break; |
6104 | } | |
e142c38c | 6105 | cu->language_defn = language_def (cu->language); |
c906108c SS |
6106 | } |
6107 | ||
6108 | /* Return the named attribute or NULL if not there. */ | |
6109 | ||
6110 | static struct attribute * | |
e142c38c | 6111 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
6112 | { |
6113 | unsigned int i; | |
6114 | struct attribute *spec = NULL; | |
6115 | ||
6116 | for (i = 0; i < die->num_attrs; ++i) | |
6117 | { | |
6118 | if (die->attrs[i].name == name) | |
10b3939b | 6119 | return &die->attrs[i]; |
c906108c SS |
6120 | if (die->attrs[i].name == DW_AT_specification |
6121 | || die->attrs[i].name == DW_AT_abstract_origin) | |
6122 | spec = &die->attrs[i]; | |
6123 | } | |
c906108c | 6124 | |
10b3939b DJ |
6125 | if (spec) |
6126 | return dwarf2_attr (follow_die_ref (die, spec, cu), name, cu); | |
c5aa993b | 6127 | |
c906108c SS |
6128 | return NULL; |
6129 | } | |
6130 | ||
05cf31d1 JB |
6131 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
6132 | and holds a non-zero value. This function should only be used for | |
6133 | DW_FORM_flag attributes. */ | |
6134 | ||
6135 | static int | |
6136 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
6137 | { | |
6138 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
6139 | ||
6140 | return (attr && DW_UNSND (attr)); | |
6141 | } | |
6142 | ||
3ca72b44 | 6143 | static int |
e142c38c | 6144 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 6145 | { |
05cf31d1 JB |
6146 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
6147 | which value is non-zero. However, we have to be careful with | |
6148 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
6149 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
6150 | end up accidently finding a declaration attribute that belongs | |
6151 | to a different DIE referenced by the specification attribute, | |
6152 | even though the given DIE does not have a declaration attribute. */ | |
6153 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
6154 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
6155 | } |
6156 | ||
63d06c5c DC |
6157 | /* Return the die giving the specification for DIE, if there is |
6158 | one. */ | |
6159 | ||
6160 | static struct die_info * | |
e142c38c | 6161 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 6162 | { |
e142c38c | 6163 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
6164 | |
6165 | if (spec_attr == NULL) | |
6166 | return NULL; | |
6167 | else | |
10b3939b | 6168 | return follow_die_ref (die, spec_attr, cu); |
63d06c5c | 6169 | } |
c906108c | 6170 | |
debd256d JB |
6171 | /* Free the line_header structure *LH, and any arrays and strings it |
6172 | refers to. */ | |
6173 | static void | |
6174 | free_line_header (struct line_header *lh) | |
6175 | { | |
6176 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 6177 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
6178 | |
6179 | /* Remember that all the lh->file_names[i].name pointers are | |
6180 | pointers into debug_line_buffer, and don't need to be freed. */ | |
6181 | if (lh->file_names) | |
a8bc7b56 | 6182 | xfree (lh->file_names); |
debd256d JB |
6183 | |
6184 | /* Similarly for the include directory names. */ | |
6185 | if (lh->include_dirs) | |
a8bc7b56 | 6186 | xfree (lh->include_dirs); |
debd256d | 6187 | |
a8bc7b56 | 6188 | xfree (lh); |
debd256d JB |
6189 | } |
6190 | ||
6191 | ||
6192 | /* Add an entry to LH's include directory table. */ | |
6193 | static void | |
6194 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 6195 | { |
debd256d JB |
6196 | /* Grow the array if necessary. */ |
6197 | if (lh->include_dirs_size == 0) | |
c5aa993b | 6198 | { |
debd256d JB |
6199 | lh->include_dirs_size = 1; /* for testing */ |
6200 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
6201 | * sizeof (*lh->include_dirs)); | |
6202 | } | |
6203 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
6204 | { | |
6205 | lh->include_dirs_size *= 2; | |
6206 | lh->include_dirs = xrealloc (lh->include_dirs, | |
6207 | (lh->include_dirs_size | |
6208 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 6209 | } |
c906108c | 6210 | |
debd256d JB |
6211 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
6212 | } | |
6213 | ||
6214 | ||
6215 | /* Add an entry to LH's file name table. */ | |
6216 | static void | |
6217 | add_file_name (struct line_header *lh, | |
6218 | char *name, | |
6219 | unsigned int dir_index, | |
6220 | unsigned int mod_time, | |
6221 | unsigned int length) | |
6222 | { | |
6223 | struct file_entry *fe; | |
6224 | ||
6225 | /* Grow the array if necessary. */ | |
6226 | if (lh->file_names_size == 0) | |
6227 | { | |
6228 | lh->file_names_size = 1; /* for testing */ | |
6229 | lh->file_names = xmalloc (lh->file_names_size | |
6230 | * sizeof (*lh->file_names)); | |
6231 | } | |
6232 | else if (lh->num_file_names >= lh->file_names_size) | |
6233 | { | |
6234 | lh->file_names_size *= 2; | |
6235 | lh->file_names = xrealloc (lh->file_names, | |
6236 | (lh->file_names_size | |
6237 | * sizeof (*lh->file_names))); | |
6238 | } | |
6239 | ||
6240 | fe = &lh->file_names[lh->num_file_names++]; | |
6241 | fe->name = name; | |
6242 | fe->dir_index = dir_index; | |
6243 | fe->mod_time = mod_time; | |
6244 | fe->length = length; | |
aaa75496 | 6245 | fe->included_p = 0; |
debd256d JB |
6246 | } |
6247 | ||
6248 | ||
6249 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
6250 | .debug_line, according to the endianness of ABFD. Return a pointer |
6251 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
6252 | |
6253 | NOTE: the strings in the include directory and file name tables of | |
6254 | the returned object point into debug_line_buffer, and must not be | |
6255 | freed. */ | |
6256 | static struct line_header * | |
6257 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 6258 | struct dwarf2_cu *cu) |
debd256d JB |
6259 | { |
6260 | struct cleanup *back_to; | |
6261 | struct line_header *lh; | |
6262 | char *line_ptr; | |
6263 | int bytes_read; | |
6264 | int i; | |
6265 | char *cur_dir, *cur_file; | |
6266 | ||
6502dd73 | 6267 | if (dwarf2_per_objfile->line_buffer == NULL) |
debd256d | 6268 | { |
4d3c2250 | 6269 | complaint (&symfile_complaints, "missing .debug_line section"); |
debd256d JB |
6270 | return 0; |
6271 | } | |
6272 | ||
a738430d MK |
6273 | /* Make sure that at least there's room for the total_length field. |
6274 | That could be 12 bytes long, but we're just going to fudge that. */ | |
6502dd73 | 6275 | if (offset + 4 >= dwarf2_per_objfile->line_size) |
debd256d | 6276 | { |
4d3c2250 | 6277 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6278 | return 0; |
6279 | } | |
6280 | ||
6281 | lh = xmalloc (sizeof (*lh)); | |
6282 | memset (lh, 0, sizeof (*lh)); | |
6283 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
6284 | (void *) lh); | |
6285 | ||
6502dd73 | 6286 | line_ptr = dwarf2_per_objfile->line_buffer + offset; |
debd256d | 6287 | |
a738430d | 6288 | /* Read in the header. */ |
debd256d JB |
6289 | lh->total_length = read_initial_length (abfd, line_ptr, NULL, &bytes_read); |
6290 | line_ptr += bytes_read; | |
6502dd73 DJ |
6291 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line_buffer |
6292 | + dwarf2_per_objfile->line_size)) | |
debd256d | 6293 | { |
4d3c2250 | 6294 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6295 | return 0; |
6296 | } | |
6297 | lh->statement_program_end = line_ptr + lh->total_length; | |
6298 | lh->version = read_2_bytes (abfd, line_ptr); | |
6299 | line_ptr += 2; | |
e7c27a73 | 6300 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
6301 | line_ptr += bytes_read; |
6302 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
6303 | line_ptr += 1; | |
6304 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
6305 | line_ptr += 1; | |
6306 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
6307 | line_ptr += 1; | |
6308 | lh->line_range = read_1_byte (abfd, line_ptr); | |
6309 | line_ptr += 1; | |
6310 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
6311 | line_ptr += 1; | |
6312 | lh->standard_opcode_lengths | |
6313 | = (unsigned char *) xmalloc (lh->opcode_base * sizeof (unsigned char)); | |
6314 | ||
6315 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
6316 | for (i = 1; i < lh->opcode_base; ++i) | |
6317 | { | |
6318 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
6319 | line_ptr += 1; | |
6320 | } | |
6321 | ||
a738430d | 6322 | /* Read directory table. */ |
debd256d JB |
6323 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6324 | { | |
6325 | line_ptr += bytes_read; | |
6326 | add_include_dir (lh, cur_dir); | |
6327 | } | |
6328 | line_ptr += bytes_read; | |
6329 | ||
a738430d | 6330 | /* Read file name table. */ |
debd256d JB |
6331 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6332 | { | |
6333 | unsigned int dir_index, mod_time, length; | |
6334 | ||
6335 | line_ptr += bytes_read; | |
6336 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6337 | line_ptr += bytes_read; | |
6338 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6339 | line_ptr += bytes_read; | |
6340 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6341 | line_ptr += bytes_read; | |
6342 | ||
6343 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6344 | } | |
6345 | line_ptr += bytes_read; | |
6346 | lh->statement_program_start = line_ptr; | |
6347 | ||
6502dd73 DJ |
6348 | if (line_ptr > (dwarf2_per_objfile->line_buffer |
6349 | + dwarf2_per_objfile->line_size)) | |
4d3c2250 KB |
6350 | complaint (&symfile_complaints, |
6351 | "line number info header doesn't fit in `.debug_line' section"); | |
debd256d JB |
6352 | |
6353 | discard_cleanups (back_to); | |
6354 | return lh; | |
6355 | } | |
c906108c | 6356 | |
5fb290d7 DJ |
6357 | /* This function exists to work around a bug in certain compilers |
6358 | (particularly GCC 2.95), in which the first line number marker of a | |
6359 | function does not show up until after the prologue, right before | |
6360 | the second line number marker. This function shifts ADDRESS down | |
6361 | to the beginning of the function if necessary, and is called on | |
6362 | addresses passed to record_line. */ | |
6363 | ||
6364 | static CORE_ADDR | |
e142c38c | 6365 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
6366 | { |
6367 | struct function_range *fn; | |
6368 | ||
6369 | /* Find the function_range containing address. */ | |
e142c38c | 6370 | if (!cu->first_fn) |
5fb290d7 DJ |
6371 | return address; |
6372 | ||
e142c38c DJ |
6373 | if (!cu->cached_fn) |
6374 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 6375 | |
e142c38c | 6376 | fn = cu->cached_fn; |
5fb290d7 DJ |
6377 | while (fn) |
6378 | if (fn->lowpc <= address && fn->highpc > address) | |
6379 | goto found; | |
6380 | else | |
6381 | fn = fn->next; | |
6382 | ||
e142c38c DJ |
6383 | fn = cu->first_fn; |
6384 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
6385 | if (fn->lowpc <= address && fn->highpc > address) |
6386 | goto found; | |
6387 | else | |
6388 | fn = fn->next; | |
6389 | ||
6390 | return address; | |
6391 | ||
6392 | found: | |
6393 | if (fn->seen_line) | |
6394 | return address; | |
6395 | if (address != fn->lowpc) | |
4d3c2250 KB |
6396 | complaint (&symfile_complaints, |
6397 | "misplaced first line number at 0x%lx for '%s'", | |
6398 | (unsigned long) address, fn->name); | |
5fb290d7 DJ |
6399 | fn->seen_line = 1; |
6400 | return fn->lowpc; | |
6401 | } | |
6402 | ||
aaa75496 JB |
6403 | /* Decode the Line Number Program (LNP) for the given line_header |
6404 | structure and CU. The actual information extracted and the type | |
6405 | of structures created from the LNP depends on the value of PST. | |
6406 | ||
6407 | 1. If PST is NULL, then this procedure uses the data from the program | |
6408 | to create all necessary symbol tables, and their linetables. | |
6409 | The compilation directory of the file is passed in COMP_DIR, | |
6410 | and must not be NULL. | |
6411 | ||
6412 | 2. If PST is not NULL, this procedure reads the program to determine | |
6413 | the list of files included by the unit represented by PST, and | |
6414 | builds all the associated partial symbol tables. In this case, | |
6415 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
6416 | is not used to compute the full name of the symtab, and therefore | |
6417 | omitting it when building the partial symtab does not introduce | |
6418 | the potential for inconsistency - a partial symtab and its associated | |
6419 | symbtab having a different fullname -). */ | |
debd256d | 6420 | |
c906108c | 6421 | static void |
debd256d | 6422 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 6423 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c SS |
6424 | { |
6425 | char *line_ptr; | |
6426 | char *line_end; | |
e7c27a73 | 6427 | unsigned int bytes_read; |
c906108c | 6428 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
6429 | CORE_ADDR baseaddr; |
6430 | struct objfile *objfile = cu->objfile; | |
aaa75496 | 6431 | const int decode_for_pst_p = (pst != NULL); |
e142c38c DJ |
6432 | |
6433 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6434 | |
debd256d JB |
6435 | line_ptr = lh->statement_program_start; |
6436 | line_end = lh->statement_program_end; | |
c906108c SS |
6437 | |
6438 | /* Read the statement sequences until there's nothing left. */ | |
6439 | while (line_ptr < line_end) | |
6440 | { | |
6441 | /* state machine registers */ | |
6442 | CORE_ADDR address = 0; | |
6443 | unsigned int file = 1; | |
6444 | unsigned int line = 1; | |
6445 | unsigned int column = 0; | |
debd256d | 6446 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
6447 | int basic_block = 0; |
6448 | int end_sequence = 0; | |
6449 | ||
aaa75496 | 6450 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 6451 | { |
aaa75496 | 6452 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
6453 | /* lh->include_dirs and lh->file_names are 0-based, but the |
6454 | directory and file name numbers in the statement program | |
6455 | are 1-based. */ | |
6456 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6457 | char *dir; | |
a738430d | 6458 | |
debd256d JB |
6459 | if (fe->dir_index) |
6460 | dir = lh->include_dirs[fe->dir_index - 1]; | |
6461 | else | |
6462 | dir = comp_dir; | |
6463 | dwarf2_start_subfile (fe->name, dir); | |
c906108c SS |
6464 | } |
6465 | ||
a738430d | 6466 | /* Decode the table. */ |
c5aa993b | 6467 | while (!end_sequence) |
c906108c SS |
6468 | { |
6469 | op_code = read_1_byte (abfd, line_ptr); | |
6470 | line_ptr += 1; | |
9aa1fe7e | 6471 | |
debd256d | 6472 | if (op_code >= lh->opcode_base) |
a738430d MK |
6473 | { |
6474 | /* Special operand. */ | |
debd256d JB |
6475 | adj_opcode = op_code - lh->opcode_base; |
6476 | address += (adj_opcode / lh->line_range) | |
6477 | * lh->minimum_instruction_length; | |
6478 | line += lh->line_base + (adj_opcode % lh->line_range); | |
aa495d11 | 6479 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6480 | if (!decode_for_pst_p) |
6481 | { | |
a738430d | 6482 | /* Append row to matrix using current values. */ |
aaa75496 JB |
6483 | record_line (current_subfile, line, |
6484 | check_cu_functions (address, cu)); | |
6485 | } | |
9aa1fe7e GK |
6486 | basic_block = 1; |
6487 | } | |
6488 | else switch (op_code) | |
c906108c SS |
6489 | { |
6490 | case DW_LNS_extended_op: | |
473b7be6 DJ |
6491 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6492 | line_ptr += bytes_read; | |
c906108c SS |
6493 | extended_op = read_1_byte (abfd, line_ptr); |
6494 | line_ptr += 1; | |
6495 | switch (extended_op) | |
6496 | { | |
6497 | case DW_LNE_end_sequence: | |
6498 | end_sequence = 1; | |
aa495d11 | 6499 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6500 | if (!decode_for_pst_p) |
6501 | record_line (current_subfile, 0, address); | |
c906108c SS |
6502 | break; |
6503 | case DW_LNE_set_address: | |
e7c27a73 | 6504 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
6505 | line_ptr += bytes_read; |
6506 | address += baseaddr; | |
c906108c SS |
6507 | break; |
6508 | case DW_LNE_define_file: | |
debd256d JB |
6509 | { |
6510 | char *cur_file; | |
6511 | unsigned int dir_index, mod_time, length; | |
6512 | ||
6513 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
6514 | line_ptr += bytes_read; | |
6515 | dir_index = | |
6516 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6517 | line_ptr += bytes_read; | |
6518 | mod_time = | |
6519 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6520 | line_ptr += bytes_read; | |
6521 | length = | |
6522 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6523 | line_ptr += bytes_read; | |
6524 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6525 | } | |
c906108c SS |
6526 | break; |
6527 | default: | |
4d3c2250 KB |
6528 | complaint (&symfile_complaints, |
6529 | "mangled .debug_line section"); | |
debd256d | 6530 | return; |
c906108c SS |
6531 | } |
6532 | break; | |
6533 | case DW_LNS_copy: | |
aa495d11 | 6534 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6535 | if (!decode_for_pst_p) |
6536 | record_line (current_subfile, line, | |
6537 | check_cu_functions (address, cu)); | |
c906108c SS |
6538 | basic_block = 0; |
6539 | break; | |
6540 | case DW_LNS_advance_pc: | |
debd256d | 6541 | address += lh->minimum_instruction_length |
c906108c SS |
6542 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6543 | line_ptr += bytes_read; | |
6544 | break; | |
6545 | case DW_LNS_advance_line: | |
6546 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
6547 | line_ptr += bytes_read; | |
6548 | break; | |
6549 | case DW_LNS_set_file: | |
debd256d | 6550 | { |
a738430d MK |
6551 | /* The arrays lh->include_dirs and lh->file_names are |
6552 | 0-based, but the directory and file name numbers in | |
6553 | the statement program are 1-based. */ | |
debd256d JB |
6554 | struct file_entry *fe; |
6555 | char *dir; | |
a738430d | 6556 | |
debd256d JB |
6557 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6558 | line_ptr += bytes_read; | |
6559 | fe = &lh->file_names[file - 1]; | |
6560 | if (fe->dir_index) | |
6561 | dir = lh->include_dirs[fe->dir_index - 1]; | |
6562 | else | |
6563 | dir = comp_dir; | |
aaa75496 JB |
6564 | if (!decode_for_pst_p) |
6565 | dwarf2_start_subfile (fe->name, dir); | |
debd256d | 6566 | } |
c906108c SS |
6567 | break; |
6568 | case DW_LNS_set_column: | |
6569 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6570 | line_ptr += bytes_read; | |
6571 | break; | |
6572 | case DW_LNS_negate_stmt: | |
6573 | is_stmt = (!is_stmt); | |
6574 | break; | |
6575 | case DW_LNS_set_basic_block: | |
6576 | basic_block = 1; | |
6577 | break; | |
c2c6d25f JM |
6578 | /* Add to the address register of the state machine the |
6579 | address increment value corresponding to special opcode | |
a738430d MK |
6580 | 255. I.e., this value is scaled by the minimum |
6581 | instruction length since special opcode 255 would have | |
6582 | scaled the the increment. */ | |
c906108c | 6583 | case DW_LNS_const_add_pc: |
debd256d JB |
6584 | address += (lh->minimum_instruction_length |
6585 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
6586 | break; |
6587 | case DW_LNS_fixed_advance_pc: | |
6588 | address += read_2_bytes (abfd, line_ptr); | |
6589 | line_ptr += 2; | |
6590 | break; | |
9aa1fe7e | 6591 | default: |
a738430d MK |
6592 | { |
6593 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 6594 | int i; |
a738430d | 6595 | |
debd256d | 6596 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
6597 | { |
6598 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6599 | line_ptr += bytes_read; | |
6600 | } | |
6601 | } | |
c906108c SS |
6602 | } |
6603 | } | |
6604 | } | |
aaa75496 JB |
6605 | |
6606 | if (decode_for_pst_p) | |
6607 | { | |
6608 | int file_index; | |
6609 | ||
6610 | /* Now that we're done scanning the Line Header Program, we can | |
6611 | create the psymtab of each included file. */ | |
6612 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
6613 | if (lh->file_names[file_index].included_p == 1) | |
6614 | { | |
6615 | char *include_name = lh->file_names [file_index].name; | |
6616 | ||
6617 | if (strcmp (include_name, pst->filename) != 0) | |
6618 | dwarf2_create_include_psymtab (include_name, pst, objfile); | |
6619 | } | |
6620 | } | |
c906108c SS |
6621 | } |
6622 | ||
6623 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
6624 | DIRNAME the name of the source directory which contains FILENAME | |
6625 | or NULL if not known. | |
6626 | This routine tries to keep line numbers from identical absolute and | |
6627 | relative file names in a common subfile. | |
6628 | ||
6629 | Using the `list' example from the GDB testsuite, which resides in | |
6630 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
6631 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
6632 | ||
c5aa993b JM |
6633 | DW_AT_name: /srcdir/list0.c |
6634 | DW_AT_comp_dir: /compdir | |
357e46e7 | 6635 | files.files[0].name: list0.h |
c5aa993b | 6636 | files.files[0].dir: /srcdir |
357e46e7 | 6637 | files.files[1].name: list0.c |
c5aa993b | 6638 | files.files[1].dir: /srcdir |
c906108c SS |
6639 | |
6640 | The line number information for list0.c has to end up in a single | |
6641 | subfile, so that `break /srcdir/list0.c:1' works as expected. */ | |
6642 | ||
6643 | static void | |
fba45db2 | 6644 | dwarf2_start_subfile (char *filename, char *dirname) |
c906108c SS |
6645 | { |
6646 | /* If the filename isn't absolute, try to match an existing subfile | |
6647 | with the full pathname. */ | |
6648 | ||
d5166ae1 | 6649 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
c906108c SS |
6650 | { |
6651 | struct subfile *subfile; | |
6652 | char *fullname = concat (dirname, "/", filename, NULL); | |
6653 | ||
6654 | for (subfile = subfiles; subfile; subfile = subfile->next) | |
6655 | { | |
d5166ae1 | 6656 | if (FILENAME_CMP (subfile->name, fullname) == 0) |
c906108c SS |
6657 | { |
6658 | current_subfile = subfile; | |
b8c9b27d | 6659 | xfree (fullname); |
c906108c SS |
6660 | return; |
6661 | } | |
6662 | } | |
b8c9b27d | 6663 | xfree (fullname); |
c906108c SS |
6664 | } |
6665 | start_subfile (filename, dirname); | |
6666 | } | |
6667 | ||
4c2df51b DJ |
6668 | static void |
6669 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 6670 | struct dwarf2_cu *cu) |
4c2df51b | 6671 | { |
e7c27a73 DJ |
6672 | struct objfile *objfile = cu->objfile; |
6673 | struct comp_unit_head *cu_header = &cu->header; | |
6674 | ||
4c2df51b DJ |
6675 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
6676 | code here to turn a symbol with DW_AT_external and a | |
6677 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
6678 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
6679 | with some versions of binutils) where shared libraries could have | |
6680 | relocations against symbols in their debug information - the | |
6681 | minimal symbol would have the right address, but the debug info | |
6682 | would not. It's no longer necessary, because we will explicitly | |
6683 | apply relocations when we read in the debug information now. */ | |
6684 | ||
6685 | /* A DW_AT_location attribute with no contents indicates that a | |
6686 | variable has been optimized away. */ | |
6687 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
6688 | { | |
6689 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
6690 | return; | |
6691 | } | |
6692 | ||
6693 | /* Handle one degenerate form of location expression specially, to | |
6694 | preserve GDB's previous behavior when section offsets are | |
6695 | specified. If this is just a DW_OP_addr then mark this symbol | |
6696 | as LOC_STATIC. */ | |
6697 | ||
6698 | if (attr_form_is_block (attr) | |
6699 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
6700 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
6701 | { | |
6702 | int dummy; | |
6703 | ||
6704 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 6705 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
6706 | fixup_symbol_section (sym, objfile); |
6707 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
6708 | SYMBOL_SECTION (sym)); | |
6709 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
6710 | return; | |
6711 | } | |
6712 | ||
6713 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
6714 | expression evaluator, and use LOC_COMPUTED only when necessary | |
6715 | (i.e. when the value of a register or memory location is | |
6716 | referenced, or a thread-local block, etc.). Then again, it might | |
6717 | not be worthwhile. I'm assuming that it isn't unless performance | |
6718 | or memory numbers show me otherwise. */ | |
6719 | ||
e7c27a73 | 6720 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
6721 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
6722 | } | |
6723 | ||
c906108c SS |
6724 | /* Given a pointer to a DWARF information entry, figure out if we need |
6725 | to make a symbol table entry for it, and if so, create a new entry | |
6726 | and return a pointer to it. | |
6727 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 6728 | used the passed type. */ |
c906108c SS |
6729 | |
6730 | static struct symbol * | |
e7c27a73 | 6731 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 6732 | { |
e7c27a73 | 6733 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6734 | struct symbol *sym = NULL; |
6735 | char *name; | |
6736 | struct attribute *attr = NULL; | |
6737 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
6738 | CORE_ADDR baseaddr; |
6739 | ||
6740 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6741 | |
5c4e30ca | 6742 | if (die->tag != DW_TAG_namespace) |
e142c38c | 6743 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
6744 | else |
6745 | name = TYPE_NAME (type); | |
6746 | ||
c906108c SS |
6747 | if (name) |
6748 | { | |
4a146b47 | 6749 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
6750 | sizeof (struct symbol)); |
6751 | OBJSTAT (objfile, n_syms++); | |
6752 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
6753 | |
6754 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 6755 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 6756 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
6757 | |
6758 | /* Default assumptions. | |
c5aa993b | 6759 | Use the passed type or decode it from the die. */ |
176620f1 | 6760 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
6761 | SYMBOL_CLASS (sym) = LOC_STATIC; |
6762 | if (type != NULL) | |
6763 | SYMBOL_TYPE (sym) = type; | |
6764 | else | |
e7c27a73 | 6765 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 6766 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
6767 | if (attr) |
6768 | { | |
6769 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
6770 | } | |
c906108c SS |
6771 | switch (die->tag) |
6772 | { | |
6773 | case DW_TAG_label: | |
e142c38c | 6774 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
6775 | if (attr) |
6776 | { | |
6777 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
6778 | } | |
6779 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
6780 | break; | |
6781 | case DW_TAG_subprogram: | |
6782 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
6783 | finish_block. */ | |
6784 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 6785 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
6786 | if (attr2 && (DW_UNSND (attr2) != 0)) |
6787 | { | |
6788 | add_symbol_to_list (sym, &global_symbols); | |
6789 | } | |
6790 | else | |
6791 | { | |
e142c38c | 6792 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6793 | } |
6794 | break; | |
6795 | case DW_TAG_variable: | |
6796 | /* Compilation with minimal debug info may result in variables | |
6797 | with missing type entries. Change the misleading `void' type | |
6798 | to something sensible. */ | |
6799 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
6800 | SYMBOL_TYPE (sym) = init_type (TYPE_CODE_INT, | |
6801 | TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
6802 | "<variable, no debug info>", | |
6803 | objfile); | |
e142c38c | 6804 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
6805 | if (attr) |
6806 | { | |
e7c27a73 | 6807 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 6808 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
6809 | if (attr2 && (DW_UNSND (attr2) != 0)) |
6810 | add_symbol_to_list (sym, &global_symbols); | |
6811 | else | |
e142c38c | 6812 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6813 | break; |
6814 | } | |
e142c38c | 6815 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
6816 | if (attr) |
6817 | { | |
e7c27a73 | 6818 | var_decode_location (attr, sym, cu); |
e142c38c | 6819 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 6820 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 6821 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 6822 | else |
e142c38c | 6823 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6824 | } |
6825 | else | |
6826 | { | |
6827 | /* We do not know the address of this symbol. | |
c5aa993b JM |
6828 | If it is an external symbol and we have type information |
6829 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
6830 | The address of the variable will then be determined from | |
6831 | the minimal symbol table whenever the variable is | |
6832 | referenced. */ | |
e142c38c | 6833 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 6834 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 6835 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
6836 | { |
6837 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
6838 | add_symbol_to_list (sym, &global_symbols); | |
6839 | } | |
6840 | } | |
6841 | break; | |
6842 | case DW_TAG_formal_parameter: | |
e142c38c | 6843 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
6844 | if (attr) |
6845 | { | |
e7c27a73 | 6846 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
6847 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
6848 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
6849 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 6850 | } |
e142c38c | 6851 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
6852 | if (attr) |
6853 | { | |
e7c27a73 | 6854 | dwarf2_const_value (attr, sym, cu); |
c906108c | 6855 | } |
e142c38c | 6856 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6857 | break; |
6858 | case DW_TAG_unspecified_parameters: | |
6859 | /* From varargs functions; gdb doesn't seem to have any | |
6860 | interest in this information, so just ignore it for now. | |
6861 | (FIXME?) */ | |
6862 | break; | |
6863 | case DW_TAG_class_type: | |
6864 | case DW_TAG_structure_type: | |
6865 | case DW_TAG_union_type: | |
6866 | case DW_TAG_enumeration_type: | |
6867 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 6868 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 6869 | |
63d06c5c DC |
6870 | /* Make sure that the symbol includes appropriate enclosing |
6871 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 6872 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
6873 | the type. */ |
6874 | ||
987504bb JJ |
6875 | if (cu->language == language_cplus |
6876 | || cu->language == language_java) | |
c906108c | 6877 | { |
63d06c5c DC |
6878 | struct type *type = SYMBOL_TYPE (sym); |
6879 | ||
6880 | if (TYPE_TAG_NAME (type) != NULL) | |
6881 | { | |
6882 | /* FIXME: carlton/2003-11-10: Should this use | |
6883 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
6884 | arises further down in this function.) */ |
6885 | /* The type's name is already allocated along with | |
6886 | this objfile, so we don't need to duplicate it | |
6887 | for the symbol. */ | |
6888 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 6889 | } |
c906108c | 6890 | } |
63d06c5c DC |
6891 | |
6892 | { | |
987504bb | 6893 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
6894 | really ever be static objects: otherwise, if you try |
6895 | to, say, break of a class's method and you're in a file | |
6896 | which doesn't mention that class, it won't work unless | |
6897 | the check for all static symbols in lookup_symbol_aux | |
6898 | saves you. See the OtherFileClass tests in | |
6899 | gdb.c++/namespace.exp. */ | |
6900 | ||
6901 | struct pending **list_to_add; | |
6902 | ||
e142c38c | 6903 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
6904 | && (cu->language == language_cplus |
6905 | || cu->language == language_java) | |
e142c38c | 6906 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
6907 | |
6908 | add_symbol_to_list (sym, list_to_add); | |
6909 | ||
6910 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb JJ |
6911 | defines a typedef for "foo". A Java class declaration also |
6912 | defines a typedef for the class. Synthesize a typedef symbol | |
6913 | so that "ptype foo" works as expected. */ | |
6914 | if (cu->language == language_cplus | |
6915 | || cu->language == language_java) | |
63d06c5c DC |
6916 | { |
6917 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 6918 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
6919 | sizeof (struct symbol)); |
6920 | *typedef_sym = *sym; | |
6921 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
d8151005 DJ |
6922 | /* The symbol's name is already allocated along with |
6923 | this objfile, so we don't need to duplicate it for | |
6924 | the type. */ | |
63d06c5c | 6925 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
d8151005 | 6926 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NATURAL_NAME (sym); |
63d06c5c DC |
6927 | add_symbol_to_list (typedef_sym, list_to_add); |
6928 | } | |
6929 | } | |
c906108c SS |
6930 | break; |
6931 | case DW_TAG_typedef: | |
63d06c5c DC |
6932 | if (processing_has_namespace_info |
6933 | && processing_current_prefix[0] != '\0') | |
6934 | { | |
987504bb JJ |
6935 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
6936 | processing_current_prefix, | |
6937 | name, cu); | |
63d06c5c DC |
6938 | } |
6939 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
6940 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 6941 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 6942 | break; |
c906108c | 6943 | case DW_TAG_base_type: |
a02abb62 | 6944 | case DW_TAG_subrange_type: |
c906108c | 6945 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 6946 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 6947 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6948 | break; |
6949 | case DW_TAG_enumerator: | |
63d06c5c DC |
6950 | if (processing_has_namespace_info |
6951 | && processing_current_prefix[0] != '\0') | |
6952 | { | |
987504bb JJ |
6953 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
6954 | processing_current_prefix, | |
6955 | name, cu); | |
63d06c5c | 6956 | } |
e142c38c | 6957 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
6958 | if (attr) |
6959 | { | |
e7c27a73 | 6960 | dwarf2_const_value (attr, sym, cu); |
c906108c | 6961 | } |
63d06c5c DC |
6962 | { |
6963 | /* NOTE: carlton/2003-11-10: See comment above in the | |
6964 | DW_TAG_class_type, etc. block. */ | |
6965 | ||
6966 | struct pending **list_to_add; | |
6967 | ||
e142c38c | 6968 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
6969 | && (cu->language == language_cplus |
6970 | || cu->language == language_java) | |
e142c38c | 6971 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
6972 | |
6973 | add_symbol_to_list (sym, list_to_add); | |
6974 | } | |
c906108c | 6975 | break; |
5c4e30ca DC |
6976 | case DW_TAG_namespace: |
6977 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
6978 | add_symbol_to_list (sym, &global_symbols); | |
6979 | break; | |
c906108c SS |
6980 | default: |
6981 | /* Not a tag we recognize. Hopefully we aren't processing | |
6982 | trash data, but since we must specifically ignore things | |
6983 | we don't recognize, there is nothing else we should do at | |
6984 | this point. */ | |
4d3c2250 KB |
6985 | complaint (&symfile_complaints, "unsupported tag: '%s'", |
6986 | dwarf_tag_name (die->tag)); | |
c906108c SS |
6987 | break; |
6988 | } | |
6989 | } | |
6990 | return (sym); | |
6991 | } | |
6992 | ||
6993 | /* Copy constant value from an attribute to a symbol. */ | |
6994 | ||
6995 | static void | |
107d2387 | 6996 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 6997 | struct dwarf2_cu *cu) |
c906108c | 6998 | { |
e7c27a73 DJ |
6999 | struct objfile *objfile = cu->objfile; |
7000 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7001 | struct dwarf_block *blk; |
7002 | ||
7003 | switch (attr->form) | |
7004 | { | |
7005 | case DW_FORM_addr: | |
107d2387 | 7006 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 7007 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7008 | cu_header->addr_size, |
7009 | TYPE_LENGTH (SYMBOL_TYPE | |
7010 | (sym))); | |
c906108c | 7011 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 7012 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
7013 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
7014 | it's body - store_unsigned_integer. */ | |
7015 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
7016 | DW_ADDR (attr)); | |
c906108c SS |
7017 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
7018 | break; | |
7019 | case DW_FORM_block1: | |
7020 | case DW_FORM_block2: | |
7021 | case DW_FORM_block4: | |
7022 | case DW_FORM_block: | |
7023 | blk = DW_BLOCK (attr); | |
7024 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 7025 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7026 | blk->size, |
7027 | TYPE_LENGTH (SYMBOL_TYPE | |
7028 | (sym))); | |
c906108c | 7029 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 7030 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
7031 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
7032 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7033 | break; | |
2df3850c JM |
7034 | |
7035 | /* The DW_AT_const_value attributes are supposed to carry the | |
7036 | symbol's value "represented as it would be on the target | |
7037 | architecture." By the time we get here, it's already been | |
7038 | converted to host endianness, so we just need to sign- or | |
7039 | zero-extend it as appropriate. */ | |
7040 | case DW_FORM_data1: | |
7041 | dwarf2_const_value_data (attr, sym, 8); | |
7042 | break; | |
c906108c | 7043 | case DW_FORM_data2: |
2df3850c JM |
7044 | dwarf2_const_value_data (attr, sym, 16); |
7045 | break; | |
c906108c | 7046 | case DW_FORM_data4: |
2df3850c JM |
7047 | dwarf2_const_value_data (attr, sym, 32); |
7048 | break; | |
c906108c | 7049 | case DW_FORM_data8: |
2df3850c JM |
7050 | dwarf2_const_value_data (attr, sym, 64); |
7051 | break; | |
7052 | ||
c906108c | 7053 | case DW_FORM_sdata: |
2df3850c JM |
7054 | SYMBOL_VALUE (sym) = DW_SND (attr); |
7055 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7056 | break; | |
7057 | ||
c906108c SS |
7058 | case DW_FORM_udata: |
7059 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
7060 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7061 | break; | |
2df3850c | 7062 | |
c906108c | 7063 | default: |
4d3c2250 KB |
7064 | complaint (&symfile_complaints, |
7065 | "unsupported const value attribute form: '%s'", | |
7066 | dwarf_form_name (attr->form)); | |
c906108c SS |
7067 | SYMBOL_VALUE (sym) = 0; |
7068 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7069 | break; | |
7070 | } | |
7071 | } | |
7072 | ||
2df3850c JM |
7073 | |
7074 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
7075 | or zero-extend it as appropriate for the symbol's type. */ | |
7076 | static void | |
7077 | dwarf2_const_value_data (struct attribute *attr, | |
7078 | struct symbol *sym, | |
7079 | int bits) | |
7080 | { | |
7081 | LONGEST l = DW_UNSND (attr); | |
7082 | ||
7083 | if (bits < sizeof (l) * 8) | |
7084 | { | |
7085 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
7086 | l &= ((LONGEST) 1 << bits) - 1; | |
7087 | else | |
bf9198f1 | 7088 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
7089 | } |
7090 | ||
7091 | SYMBOL_VALUE (sym) = l; | |
7092 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7093 | } | |
7094 | ||
7095 | ||
c906108c SS |
7096 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
7097 | ||
7098 | static struct type * | |
e7c27a73 | 7099 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7100 | { |
7101 | struct type *type; | |
7102 | struct attribute *type_attr; | |
7103 | struct die_info *type_die; | |
c906108c | 7104 | |
e142c38c | 7105 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
7106 | if (!type_attr) |
7107 | { | |
7108 | /* A missing DW_AT_type represents a void type. */ | |
e142c38c | 7109 | return dwarf2_fundamental_type (cu->objfile, FT_VOID, cu); |
c906108c SS |
7110 | } |
7111 | else | |
10b3939b DJ |
7112 | type_die = follow_die_ref (die, type_attr, cu); |
7113 | ||
e7c27a73 | 7114 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7115 | if (!type) |
7116 | { | |
7117 | dump_die (type_die); | |
659b0389 | 7118 | error ("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]", |
e7c27a73 | 7119 | cu->objfile->name); |
c906108c SS |
7120 | } |
7121 | return type; | |
7122 | } | |
7123 | ||
7124 | /* Return the containing type of the die in question using its | |
7125 | DW_AT_containing_type attribute. */ | |
7126 | ||
7127 | static struct type * | |
e7c27a73 | 7128 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7129 | { |
7130 | struct type *type = NULL; | |
7131 | struct attribute *type_attr; | |
7132 | struct die_info *type_die = NULL; | |
c906108c | 7133 | |
e142c38c | 7134 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
7135 | if (type_attr) |
7136 | { | |
10b3939b | 7137 | type_die = follow_die_ref (die, type_attr, cu); |
e7c27a73 | 7138 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7139 | } |
7140 | if (!type) | |
7141 | { | |
7142 | if (type_die) | |
7143 | dump_die (type_die); | |
659b0389 | 7144 | error ("Dwarf Error: Problem turning containing type into gdb type [in module %s]", |
e7c27a73 | 7145 | cu->objfile->name); |
c906108c SS |
7146 | } |
7147 | return type; | |
7148 | } | |
7149 | ||
c906108c | 7150 | static struct type * |
e7c27a73 | 7151 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7152 | { |
7153 | if (die->type) | |
7154 | { | |
7155 | return die->type; | |
7156 | } | |
7157 | else | |
7158 | { | |
e7c27a73 | 7159 | read_type_die (die, cu); |
c906108c SS |
7160 | if (!die->type) |
7161 | { | |
7162 | dump_die (die); | |
659b0389 | 7163 | error ("Dwarf Error: Cannot find type of die [in module %s]", |
e7c27a73 | 7164 | cu->objfile->name); |
c906108c SS |
7165 | } |
7166 | return die->type; | |
7167 | } | |
7168 | } | |
7169 | ||
7170 | static void | |
e7c27a73 | 7171 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7172 | { |
e142c38c | 7173 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
7174 | const char *old_prefix = processing_current_prefix; |
7175 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
7176 | processing_current_prefix = prefix; | |
7177 | ||
c906108c SS |
7178 | switch (die->tag) |
7179 | { | |
7180 | case DW_TAG_class_type: | |
7181 | case DW_TAG_structure_type: | |
7182 | case DW_TAG_union_type: | |
134d01f1 | 7183 | read_structure_type (die, cu); |
c906108c SS |
7184 | break; |
7185 | case DW_TAG_enumeration_type: | |
134d01f1 | 7186 | read_enumeration_type (die, cu); |
c906108c SS |
7187 | break; |
7188 | case DW_TAG_subprogram: | |
7189 | case DW_TAG_subroutine_type: | |
e7c27a73 | 7190 | read_subroutine_type (die, cu); |
c906108c SS |
7191 | break; |
7192 | case DW_TAG_array_type: | |
e7c27a73 | 7193 | read_array_type (die, cu); |
c906108c SS |
7194 | break; |
7195 | case DW_TAG_pointer_type: | |
e7c27a73 | 7196 | read_tag_pointer_type (die, cu); |
c906108c SS |
7197 | break; |
7198 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 7199 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
7200 | break; |
7201 | case DW_TAG_reference_type: | |
e7c27a73 | 7202 | read_tag_reference_type (die, cu); |
c906108c SS |
7203 | break; |
7204 | case DW_TAG_const_type: | |
e7c27a73 | 7205 | read_tag_const_type (die, cu); |
c906108c SS |
7206 | break; |
7207 | case DW_TAG_volatile_type: | |
e7c27a73 | 7208 | read_tag_volatile_type (die, cu); |
c906108c SS |
7209 | break; |
7210 | case DW_TAG_string_type: | |
e7c27a73 | 7211 | read_tag_string_type (die, cu); |
c906108c SS |
7212 | break; |
7213 | case DW_TAG_typedef: | |
e7c27a73 | 7214 | read_typedef (die, cu); |
c906108c | 7215 | break; |
a02abb62 JB |
7216 | case DW_TAG_subrange_type: |
7217 | read_subrange_type (die, cu); | |
7218 | break; | |
c906108c | 7219 | case DW_TAG_base_type: |
e7c27a73 | 7220 | read_base_type (die, cu); |
c906108c SS |
7221 | break; |
7222 | default: | |
4d3c2250 KB |
7223 | complaint (&symfile_complaints, "unexepected tag in read_type_die: '%s'", |
7224 | dwarf_tag_name (die->tag)); | |
c906108c SS |
7225 | break; |
7226 | } | |
63d06c5c DC |
7227 | |
7228 | processing_current_prefix = old_prefix; | |
7229 | do_cleanups (back_to); | |
7230 | } | |
7231 | ||
fdde2d81 DC |
7232 | /* Return the name of the namespace/class that DIE is defined within, |
7233 | or "" if we can't tell. The caller should xfree the result. */ | |
7234 | ||
7235 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
7236 | therein) for an example of how to use this function to deal with | |
7237 | DW_AT_specification. */ | |
7238 | ||
7239 | static char * | |
e142c38c | 7240 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
7241 | { |
7242 | struct die_info *parent; | |
7243 | ||
987504bb JJ |
7244 | if (cu->language != language_cplus |
7245 | && cu->language != language_java) | |
63d06c5c DC |
7246 | return NULL; |
7247 | ||
7248 | parent = die->parent; | |
7249 | ||
7250 | if (parent == NULL) | |
7251 | { | |
8176b9b8 | 7252 | return xstrdup (""); |
63d06c5c DC |
7253 | } |
7254 | else | |
7255 | { | |
63d06c5c DC |
7256 | switch (parent->tag) { |
7257 | case DW_TAG_namespace: | |
7258 | { | |
8176b9b8 DC |
7259 | /* FIXME: carlton/2004-03-05: Should I follow extension dies |
7260 | before doing this check? */ | |
7261 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) | |
7262 | { | |
7263 | return xstrdup (TYPE_TAG_NAME (parent->type)); | |
7264 | } | |
7265 | else | |
7266 | { | |
7267 | int dummy; | |
7268 | char *parent_prefix = determine_prefix (parent, cu); | |
987504bb | 7269 | char *retval = typename_concat (NULL, parent_prefix, |
8176b9b8 | 7270 | namespace_name (parent, &dummy, |
987504bb JJ |
7271 | cu), |
7272 | cu); | |
8176b9b8 DC |
7273 | xfree (parent_prefix); |
7274 | return retval; | |
7275 | } | |
63d06c5c DC |
7276 | } |
7277 | break; | |
7278 | case DW_TAG_class_type: | |
7279 | case DW_TAG_structure_type: | |
7280 | { | |
8176b9b8 | 7281 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) |
63d06c5c | 7282 | { |
8176b9b8 | 7283 | return xstrdup (TYPE_TAG_NAME (parent->type)); |
63d06c5c DC |
7284 | } |
7285 | else | |
8176b9b8 DC |
7286 | { |
7287 | const char *old_prefix = processing_current_prefix; | |
7288 | char *new_prefix = determine_prefix (parent, cu); | |
7289 | char *retval; | |
7290 | ||
7291 | processing_current_prefix = new_prefix; | |
7292 | retval = determine_class_name (parent, cu); | |
7293 | processing_current_prefix = old_prefix; | |
7294 | ||
7295 | xfree (new_prefix); | |
7296 | return retval; | |
7297 | } | |
63d06c5c | 7298 | } |
63d06c5c | 7299 | default: |
8176b9b8 | 7300 | return determine_prefix (parent, cu); |
63d06c5c | 7301 | } |
63d06c5c DC |
7302 | } |
7303 | } | |
7304 | ||
987504bb JJ |
7305 | /* Return a newly-allocated string formed by concatenating PREFIX and |
7306 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
7307 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
7308 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
7309 | is used to determine the language and hence, the appropriate separator. */ | |
7310 | ||
7311 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
7312 | |
7313 | static char * | |
987504bb JJ |
7314 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
7315 | struct dwarf2_cu *cu) | |
63d06c5c | 7316 | { |
987504bb | 7317 | char *sep; |
63d06c5c | 7318 | |
987504bb JJ |
7319 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
7320 | sep = ""; | |
7321 | else if (cu->language == language_java) | |
7322 | sep = "."; | |
7323 | else | |
7324 | sep = "::"; | |
63d06c5c | 7325 | |
987504bb JJ |
7326 | if (obs == NULL) |
7327 | { | |
7328 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
7329 | retval[0] = '\0'; | |
7330 | ||
7331 | if (prefix) | |
7332 | { | |
7333 | strcpy (retval, prefix); | |
7334 | strcat (retval, sep); | |
7335 | } | |
7336 | if (suffix) | |
7337 | strcat (retval, suffix); | |
7338 | ||
63d06c5c DC |
7339 | return retval; |
7340 | } | |
987504bb JJ |
7341 | else |
7342 | { | |
7343 | /* We have an obstack. */ | |
7344 | return obconcat (obs, prefix, sep, suffix); | |
7345 | } | |
63d06c5c DC |
7346 | } |
7347 | ||
c906108c | 7348 | static struct type * |
e7c27a73 | 7349 | dwarf_base_type (int encoding, int size, struct dwarf2_cu *cu) |
c906108c | 7350 | { |
e7c27a73 DJ |
7351 | struct objfile *objfile = cu->objfile; |
7352 | ||
c906108c SS |
7353 | /* FIXME - this should not produce a new (struct type *) |
7354 | every time. It should cache base types. */ | |
7355 | struct type *type; | |
7356 | switch (encoding) | |
7357 | { | |
7358 | case DW_ATE_address: | |
e142c38c | 7359 | type = dwarf2_fundamental_type (objfile, FT_VOID, cu); |
c906108c SS |
7360 | return type; |
7361 | case DW_ATE_boolean: | |
e142c38c | 7362 | type = dwarf2_fundamental_type (objfile, FT_BOOLEAN, cu); |
c906108c SS |
7363 | return type; |
7364 | case DW_ATE_complex_float: | |
7365 | if (size == 16) | |
7366 | { | |
e142c38c | 7367 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_COMPLEX, cu); |
c906108c SS |
7368 | } |
7369 | else | |
7370 | { | |
e142c38c | 7371 | type = dwarf2_fundamental_type (objfile, FT_COMPLEX, cu); |
c906108c SS |
7372 | } |
7373 | return type; | |
7374 | case DW_ATE_float: | |
7375 | if (size == 8) | |
7376 | { | |
e142c38c | 7377 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
c906108c SS |
7378 | } |
7379 | else | |
7380 | { | |
e142c38c | 7381 | type = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
c906108c SS |
7382 | } |
7383 | return type; | |
7384 | case DW_ATE_signed: | |
7385 | switch (size) | |
7386 | { | |
7387 | case 1: | |
e142c38c | 7388 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
7389 | break; |
7390 | case 2: | |
e142c38c | 7391 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_SHORT, cu); |
c906108c SS |
7392 | break; |
7393 | default: | |
7394 | case 4: | |
e142c38c | 7395 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
7396 | break; |
7397 | } | |
7398 | return type; | |
7399 | case DW_ATE_signed_char: | |
e142c38c | 7400 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
7401 | return type; |
7402 | case DW_ATE_unsigned: | |
7403 | switch (size) | |
7404 | { | |
7405 | case 1: | |
e142c38c | 7406 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
7407 | break; |
7408 | case 2: | |
e142c38c | 7409 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_SHORT, cu); |
c906108c SS |
7410 | break; |
7411 | default: | |
7412 | case 4: | |
e142c38c | 7413 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_INTEGER, cu); |
c906108c SS |
7414 | break; |
7415 | } | |
7416 | return type; | |
7417 | case DW_ATE_unsigned_char: | |
e142c38c | 7418 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
7419 | return type; |
7420 | default: | |
e142c38c | 7421 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
7422 | return type; |
7423 | } | |
7424 | } | |
7425 | ||
7426 | #if 0 | |
7427 | struct die_info * | |
fba45db2 | 7428 | copy_die (struct die_info *old_die) |
c906108c SS |
7429 | { |
7430 | struct die_info *new_die; | |
7431 | int i, num_attrs; | |
7432 | ||
7433 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
7434 | memset (new_die, 0, sizeof (struct die_info)); | |
7435 | ||
7436 | new_die->tag = old_die->tag; | |
7437 | new_die->has_children = old_die->has_children; | |
7438 | new_die->abbrev = old_die->abbrev; | |
7439 | new_die->offset = old_die->offset; | |
7440 | new_die->type = NULL; | |
7441 | ||
7442 | num_attrs = old_die->num_attrs; | |
7443 | new_die->num_attrs = num_attrs; | |
7444 | new_die->attrs = (struct attribute *) | |
7445 | xmalloc (num_attrs * sizeof (struct attribute)); | |
7446 | ||
7447 | for (i = 0; i < old_die->num_attrs; ++i) | |
7448 | { | |
7449 | new_die->attrs[i].name = old_die->attrs[i].name; | |
7450 | new_die->attrs[i].form = old_die->attrs[i].form; | |
7451 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
7452 | } | |
7453 | ||
7454 | new_die->next = NULL; | |
7455 | return new_die; | |
7456 | } | |
7457 | #endif | |
7458 | ||
7459 | /* Return sibling of die, NULL if no sibling. */ | |
7460 | ||
f9aca02d | 7461 | static struct die_info * |
fba45db2 | 7462 | sibling_die (struct die_info *die) |
c906108c | 7463 | { |
639d11d3 | 7464 | return die->sibling; |
c906108c SS |
7465 | } |
7466 | ||
7467 | /* Get linkage name of a die, return NULL if not found. */ | |
7468 | ||
7469 | static char * | |
e142c38c | 7470 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7471 | { |
7472 | struct attribute *attr; | |
7473 | ||
e142c38c | 7474 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
7475 | if (attr && DW_STRING (attr)) |
7476 | return DW_STRING (attr); | |
e142c38c | 7477 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
7478 | if (attr && DW_STRING (attr)) |
7479 | return DW_STRING (attr); | |
7480 | return NULL; | |
7481 | } | |
7482 | ||
9219021c DC |
7483 | /* Get name of a die, return NULL if not found. */ |
7484 | ||
7485 | static char * | |
e142c38c | 7486 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7487 | { |
7488 | struct attribute *attr; | |
7489 | ||
e142c38c | 7490 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
7491 | if (attr && DW_STRING (attr)) |
7492 | return DW_STRING (attr); | |
7493 | return NULL; | |
7494 | } | |
7495 | ||
7496 | /* Return the die that this die in an extension of, or NULL if there | |
7497 | is none. */ | |
7498 | ||
7499 | static struct die_info * | |
e142c38c | 7500 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7501 | { |
7502 | struct attribute *attr; | |
9219021c | 7503 | |
e142c38c | 7504 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
7505 | if (attr == NULL) |
7506 | return NULL; | |
7507 | ||
10b3939b | 7508 | return follow_die_ref (die, attr, cu); |
9219021c DC |
7509 | } |
7510 | ||
c906108c SS |
7511 | /* Convert a DIE tag into its string name. */ |
7512 | ||
7513 | static char * | |
aa1ee363 | 7514 | dwarf_tag_name (unsigned tag) |
c906108c SS |
7515 | { |
7516 | switch (tag) | |
7517 | { | |
7518 | case DW_TAG_padding: | |
7519 | return "DW_TAG_padding"; | |
7520 | case DW_TAG_array_type: | |
7521 | return "DW_TAG_array_type"; | |
7522 | case DW_TAG_class_type: | |
7523 | return "DW_TAG_class_type"; | |
7524 | case DW_TAG_entry_point: | |
7525 | return "DW_TAG_entry_point"; | |
7526 | case DW_TAG_enumeration_type: | |
7527 | return "DW_TAG_enumeration_type"; | |
7528 | case DW_TAG_formal_parameter: | |
7529 | return "DW_TAG_formal_parameter"; | |
7530 | case DW_TAG_imported_declaration: | |
7531 | return "DW_TAG_imported_declaration"; | |
7532 | case DW_TAG_label: | |
7533 | return "DW_TAG_label"; | |
7534 | case DW_TAG_lexical_block: | |
7535 | return "DW_TAG_lexical_block"; | |
7536 | case DW_TAG_member: | |
7537 | return "DW_TAG_member"; | |
7538 | case DW_TAG_pointer_type: | |
7539 | return "DW_TAG_pointer_type"; | |
7540 | case DW_TAG_reference_type: | |
7541 | return "DW_TAG_reference_type"; | |
7542 | case DW_TAG_compile_unit: | |
7543 | return "DW_TAG_compile_unit"; | |
7544 | case DW_TAG_string_type: | |
7545 | return "DW_TAG_string_type"; | |
7546 | case DW_TAG_structure_type: | |
7547 | return "DW_TAG_structure_type"; | |
7548 | case DW_TAG_subroutine_type: | |
7549 | return "DW_TAG_subroutine_type"; | |
7550 | case DW_TAG_typedef: | |
7551 | return "DW_TAG_typedef"; | |
7552 | case DW_TAG_union_type: | |
7553 | return "DW_TAG_union_type"; | |
7554 | case DW_TAG_unspecified_parameters: | |
7555 | return "DW_TAG_unspecified_parameters"; | |
7556 | case DW_TAG_variant: | |
7557 | return "DW_TAG_variant"; | |
7558 | case DW_TAG_common_block: | |
7559 | return "DW_TAG_common_block"; | |
7560 | case DW_TAG_common_inclusion: | |
7561 | return "DW_TAG_common_inclusion"; | |
7562 | case DW_TAG_inheritance: | |
7563 | return "DW_TAG_inheritance"; | |
7564 | case DW_TAG_inlined_subroutine: | |
7565 | return "DW_TAG_inlined_subroutine"; | |
7566 | case DW_TAG_module: | |
7567 | return "DW_TAG_module"; | |
7568 | case DW_TAG_ptr_to_member_type: | |
7569 | return "DW_TAG_ptr_to_member_type"; | |
7570 | case DW_TAG_set_type: | |
7571 | return "DW_TAG_set_type"; | |
7572 | case DW_TAG_subrange_type: | |
7573 | return "DW_TAG_subrange_type"; | |
7574 | case DW_TAG_with_stmt: | |
7575 | return "DW_TAG_with_stmt"; | |
7576 | case DW_TAG_access_declaration: | |
7577 | return "DW_TAG_access_declaration"; | |
7578 | case DW_TAG_base_type: | |
7579 | return "DW_TAG_base_type"; | |
7580 | case DW_TAG_catch_block: | |
7581 | return "DW_TAG_catch_block"; | |
7582 | case DW_TAG_const_type: | |
7583 | return "DW_TAG_const_type"; | |
7584 | case DW_TAG_constant: | |
7585 | return "DW_TAG_constant"; | |
7586 | case DW_TAG_enumerator: | |
7587 | return "DW_TAG_enumerator"; | |
7588 | case DW_TAG_file_type: | |
7589 | return "DW_TAG_file_type"; | |
7590 | case DW_TAG_friend: | |
7591 | return "DW_TAG_friend"; | |
7592 | case DW_TAG_namelist: | |
7593 | return "DW_TAG_namelist"; | |
7594 | case DW_TAG_namelist_item: | |
7595 | return "DW_TAG_namelist_item"; | |
7596 | case DW_TAG_packed_type: | |
7597 | return "DW_TAG_packed_type"; | |
7598 | case DW_TAG_subprogram: | |
7599 | return "DW_TAG_subprogram"; | |
7600 | case DW_TAG_template_type_param: | |
7601 | return "DW_TAG_template_type_param"; | |
7602 | case DW_TAG_template_value_param: | |
7603 | return "DW_TAG_template_value_param"; | |
7604 | case DW_TAG_thrown_type: | |
7605 | return "DW_TAG_thrown_type"; | |
7606 | case DW_TAG_try_block: | |
7607 | return "DW_TAG_try_block"; | |
7608 | case DW_TAG_variant_part: | |
7609 | return "DW_TAG_variant_part"; | |
7610 | case DW_TAG_variable: | |
7611 | return "DW_TAG_variable"; | |
7612 | case DW_TAG_volatile_type: | |
7613 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
7614 | case DW_TAG_dwarf_procedure: |
7615 | return "DW_TAG_dwarf_procedure"; | |
7616 | case DW_TAG_restrict_type: | |
7617 | return "DW_TAG_restrict_type"; | |
7618 | case DW_TAG_interface_type: | |
7619 | return "DW_TAG_interface_type"; | |
7620 | case DW_TAG_namespace: | |
7621 | return "DW_TAG_namespace"; | |
7622 | case DW_TAG_imported_module: | |
7623 | return "DW_TAG_imported_module"; | |
7624 | case DW_TAG_unspecified_type: | |
7625 | return "DW_TAG_unspecified_type"; | |
7626 | case DW_TAG_partial_unit: | |
7627 | return "DW_TAG_partial_unit"; | |
7628 | case DW_TAG_imported_unit: | |
7629 | return "DW_TAG_imported_unit"; | |
c906108c SS |
7630 | case DW_TAG_MIPS_loop: |
7631 | return "DW_TAG_MIPS_loop"; | |
7632 | case DW_TAG_format_label: | |
7633 | return "DW_TAG_format_label"; | |
7634 | case DW_TAG_function_template: | |
7635 | return "DW_TAG_function_template"; | |
7636 | case DW_TAG_class_template: | |
7637 | return "DW_TAG_class_template"; | |
7638 | default: | |
7639 | return "DW_TAG_<unknown>"; | |
7640 | } | |
7641 | } | |
7642 | ||
7643 | /* Convert a DWARF attribute code into its string name. */ | |
7644 | ||
7645 | static char * | |
aa1ee363 | 7646 | dwarf_attr_name (unsigned attr) |
c906108c SS |
7647 | { |
7648 | switch (attr) | |
7649 | { | |
7650 | case DW_AT_sibling: | |
7651 | return "DW_AT_sibling"; | |
7652 | case DW_AT_location: | |
7653 | return "DW_AT_location"; | |
7654 | case DW_AT_name: | |
7655 | return "DW_AT_name"; | |
7656 | case DW_AT_ordering: | |
7657 | return "DW_AT_ordering"; | |
7658 | case DW_AT_subscr_data: | |
7659 | return "DW_AT_subscr_data"; | |
7660 | case DW_AT_byte_size: | |
7661 | return "DW_AT_byte_size"; | |
7662 | case DW_AT_bit_offset: | |
7663 | return "DW_AT_bit_offset"; | |
7664 | case DW_AT_bit_size: | |
7665 | return "DW_AT_bit_size"; | |
7666 | case DW_AT_element_list: | |
7667 | return "DW_AT_element_list"; | |
7668 | case DW_AT_stmt_list: | |
7669 | return "DW_AT_stmt_list"; | |
7670 | case DW_AT_low_pc: | |
7671 | return "DW_AT_low_pc"; | |
7672 | case DW_AT_high_pc: | |
7673 | return "DW_AT_high_pc"; | |
7674 | case DW_AT_language: | |
7675 | return "DW_AT_language"; | |
7676 | case DW_AT_member: | |
7677 | return "DW_AT_member"; | |
7678 | case DW_AT_discr: | |
7679 | return "DW_AT_discr"; | |
7680 | case DW_AT_discr_value: | |
7681 | return "DW_AT_discr_value"; | |
7682 | case DW_AT_visibility: | |
7683 | return "DW_AT_visibility"; | |
7684 | case DW_AT_import: | |
7685 | return "DW_AT_import"; | |
7686 | case DW_AT_string_length: | |
7687 | return "DW_AT_string_length"; | |
7688 | case DW_AT_common_reference: | |
7689 | return "DW_AT_common_reference"; | |
7690 | case DW_AT_comp_dir: | |
7691 | return "DW_AT_comp_dir"; | |
7692 | case DW_AT_const_value: | |
7693 | return "DW_AT_const_value"; | |
7694 | case DW_AT_containing_type: | |
7695 | return "DW_AT_containing_type"; | |
7696 | case DW_AT_default_value: | |
7697 | return "DW_AT_default_value"; | |
7698 | case DW_AT_inline: | |
7699 | return "DW_AT_inline"; | |
7700 | case DW_AT_is_optional: | |
7701 | return "DW_AT_is_optional"; | |
7702 | case DW_AT_lower_bound: | |
7703 | return "DW_AT_lower_bound"; | |
7704 | case DW_AT_producer: | |
7705 | return "DW_AT_producer"; | |
7706 | case DW_AT_prototyped: | |
7707 | return "DW_AT_prototyped"; | |
7708 | case DW_AT_return_addr: | |
7709 | return "DW_AT_return_addr"; | |
7710 | case DW_AT_start_scope: | |
7711 | return "DW_AT_start_scope"; | |
7712 | case DW_AT_stride_size: | |
7713 | return "DW_AT_stride_size"; | |
7714 | case DW_AT_upper_bound: | |
7715 | return "DW_AT_upper_bound"; | |
7716 | case DW_AT_abstract_origin: | |
7717 | return "DW_AT_abstract_origin"; | |
7718 | case DW_AT_accessibility: | |
7719 | return "DW_AT_accessibility"; | |
7720 | case DW_AT_address_class: | |
7721 | return "DW_AT_address_class"; | |
7722 | case DW_AT_artificial: | |
7723 | return "DW_AT_artificial"; | |
7724 | case DW_AT_base_types: | |
7725 | return "DW_AT_base_types"; | |
7726 | case DW_AT_calling_convention: | |
7727 | return "DW_AT_calling_convention"; | |
7728 | case DW_AT_count: | |
7729 | return "DW_AT_count"; | |
7730 | case DW_AT_data_member_location: | |
7731 | return "DW_AT_data_member_location"; | |
7732 | case DW_AT_decl_column: | |
7733 | return "DW_AT_decl_column"; | |
7734 | case DW_AT_decl_file: | |
7735 | return "DW_AT_decl_file"; | |
7736 | case DW_AT_decl_line: | |
7737 | return "DW_AT_decl_line"; | |
7738 | case DW_AT_declaration: | |
7739 | return "DW_AT_declaration"; | |
7740 | case DW_AT_discr_list: | |
7741 | return "DW_AT_discr_list"; | |
7742 | case DW_AT_encoding: | |
7743 | return "DW_AT_encoding"; | |
7744 | case DW_AT_external: | |
7745 | return "DW_AT_external"; | |
7746 | case DW_AT_frame_base: | |
7747 | return "DW_AT_frame_base"; | |
7748 | case DW_AT_friend: | |
7749 | return "DW_AT_friend"; | |
7750 | case DW_AT_identifier_case: | |
7751 | return "DW_AT_identifier_case"; | |
7752 | case DW_AT_macro_info: | |
7753 | return "DW_AT_macro_info"; | |
7754 | case DW_AT_namelist_items: | |
7755 | return "DW_AT_namelist_items"; | |
7756 | case DW_AT_priority: | |
7757 | return "DW_AT_priority"; | |
7758 | case DW_AT_segment: | |
7759 | return "DW_AT_segment"; | |
7760 | case DW_AT_specification: | |
7761 | return "DW_AT_specification"; | |
7762 | case DW_AT_static_link: | |
7763 | return "DW_AT_static_link"; | |
7764 | case DW_AT_type: | |
7765 | return "DW_AT_type"; | |
7766 | case DW_AT_use_location: | |
7767 | return "DW_AT_use_location"; | |
7768 | case DW_AT_variable_parameter: | |
7769 | return "DW_AT_variable_parameter"; | |
7770 | case DW_AT_virtuality: | |
7771 | return "DW_AT_virtuality"; | |
7772 | case DW_AT_vtable_elem_location: | |
7773 | return "DW_AT_vtable_elem_location"; | |
d9fa45fe DC |
7774 | case DW_AT_allocated: |
7775 | return "DW_AT_allocated"; | |
7776 | case DW_AT_associated: | |
7777 | return "DW_AT_associated"; | |
7778 | case DW_AT_data_location: | |
7779 | return "DW_AT_data_location"; | |
7780 | case DW_AT_stride: | |
7781 | return "DW_AT_stride"; | |
7782 | case DW_AT_entry_pc: | |
7783 | return "DW_AT_entry_pc"; | |
7784 | case DW_AT_use_UTF8: | |
7785 | return "DW_AT_use_UTF8"; | |
7786 | case DW_AT_extension: | |
7787 | return "DW_AT_extension"; | |
7788 | case DW_AT_ranges: | |
7789 | return "DW_AT_ranges"; | |
7790 | case DW_AT_trampoline: | |
7791 | return "DW_AT_trampoline"; | |
7792 | case DW_AT_call_column: | |
7793 | return "DW_AT_call_column"; | |
7794 | case DW_AT_call_file: | |
7795 | return "DW_AT_call_file"; | |
7796 | case DW_AT_call_line: | |
7797 | return "DW_AT_call_line"; | |
c906108c SS |
7798 | #ifdef MIPS |
7799 | case DW_AT_MIPS_fde: | |
7800 | return "DW_AT_MIPS_fde"; | |
7801 | case DW_AT_MIPS_loop_begin: | |
7802 | return "DW_AT_MIPS_loop_begin"; | |
7803 | case DW_AT_MIPS_tail_loop_begin: | |
7804 | return "DW_AT_MIPS_tail_loop_begin"; | |
7805 | case DW_AT_MIPS_epilog_begin: | |
7806 | return "DW_AT_MIPS_epilog_begin"; | |
7807 | case DW_AT_MIPS_loop_unroll_factor: | |
7808 | return "DW_AT_MIPS_loop_unroll_factor"; | |
7809 | case DW_AT_MIPS_software_pipeline_depth: | |
7810 | return "DW_AT_MIPS_software_pipeline_depth"; | |
e0a4f5a1 | 7811 | #endif |
c906108c SS |
7812 | case DW_AT_MIPS_linkage_name: |
7813 | return "DW_AT_MIPS_linkage_name"; | |
c906108c SS |
7814 | |
7815 | case DW_AT_sf_names: | |
7816 | return "DW_AT_sf_names"; | |
7817 | case DW_AT_src_info: | |
7818 | return "DW_AT_src_info"; | |
7819 | case DW_AT_mac_info: | |
7820 | return "DW_AT_mac_info"; | |
7821 | case DW_AT_src_coords: | |
7822 | return "DW_AT_src_coords"; | |
7823 | case DW_AT_body_begin: | |
7824 | return "DW_AT_body_begin"; | |
7825 | case DW_AT_body_end: | |
7826 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
7827 | case DW_AT_GNU_vector: |
7828 | return "DW_AT_GNU_vector"; | |
c906108c SS |
7829 | default: |
7830 | return "DW_AT_<unknown>"; | |
7831 | } | |
7832 | } | |
7833 | ||
7834 | /* Convert a DWARF value form code into its string name. */ | |
7835 | ||
7836 | static char * | |
aa1ee363 | 7837 | dwarf_form_name (unsigned form) |
c906108c SS |
7838 | { |
7839 | switch (form) | |
7840 | { | |
7841 | case DW_FORM_addr: | |
7842 | return "DW_FORM_addr"; | |
7843 | case DW_FORM_block2: | |
7844 | return "DW_FORM_block2"; | |
7845 | case DW_FORM_block4: | |
7846 | return "DW_FORM_block4"; | |
7847 | case DW_FORM_data2: | |
7848 | return "DW_FORM_data2"; | |
7849 | case DW_FORM_data4: | |
7850 | return "DW_FORM_data4"; | |
7851 | case DW_FORM_data8: | |
7852 | return "DW_FORM_data8"; | |
7853 | case DW_FORM_string: | |
7854 | return "DW_FORM_string"; | |
7855 | case DW_FORM_block: | |
7856 | return "DW_FORM_block"; | |
7857 | case DW_FORM_block1: | |
7858 | return "DW_FORM_block1"; | |
7859 | case DW_FORM_data1: | |
7860 | return "DW_FORM_data1"; | |
7861 | case DW_FORM_flag: | |
7862 | return "DW_FORM_flag"; | |
7863 | case DW_FORM_sdata: | |
7864 | return "DW_FORM_sdata"; | |
7865 | case DW_FORM_strp: | |
7866 | return "DW_FORM_strp"; | |
7867 | case DW_FORM_udata: | |
7868 | return "DW_FORM_udata"; | |
7869 | case DW_FORM_ref_addr: | |
7870 | return "DW_FORM_ref_addr"; | |
7871 | case DW_FORM_ref1: | |
7872 | return "DW_FORM_ref1"; | |
7873 | case DW_FORM_ref2: | |
7874 | return "DW_FORM_ref2"; | |
7875 | case DW_FORM_ref4: | |
7876 | return "DW_FORM_ref4"; | |
7877 | case DW_FORM_ref8: | |
7878 | return "DW_FORM_ref8"; | |
7879 | case DW_FORM_ref_udata: | |
7880 | return "DW_FORM_ref_udata"; | |
7881 | case DW_FORM_indirect: | |
7882 | return "DW_FORM_indirect"; | |
7883 | default: | |
7884 | return "DW_FORM_<unknown>"; | |
7885 | } | |
7886 | } | |
7887 | ||
7888 | /* Convert a DWARF stack opcode into its string name. */ | |
7889 | ||
7890 | static char * | |
aa1ee363 | 7891 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
7892 | { |
7893 | switch (op) | |
7894 | { | |
7895 | case DW_OP_addr: | |
7896 | return "DW_OP_addr"; | |
7897 | case DW_OP_deref: | |
7898 | return "DW_OP_deref"; | |
7899 | case DW_OP_const1u: | |
7900 | return "DW_OP_const1u"; | |
7901 | case DW_OP_const1s: | |
7902 | return "DW_OP_const1s"; | |
7903 | case DW_OP_const2u: | |
7904 | return "DW_OP_const2u"; | |
7905 | case DW_OP_const2s: | |
7906 | return "DW_OP_const2s"; | |
7907 | case DW_OP_const4u: | |
7908 | return "DW_OP_const4u"; | |
7909 | case DW_OP_const4s: | |
7910 | return "DW_OP_const4s"; | |
7911 | case DW_OP_const8u: | |
7912 | return "DW_OP_const8u"; | |
7913 | case DW_OP_const8s: | |
7914 | return "DW_OP_const8s"; | |
7915 | case DW_OP_constu: | |
7916 | return "DW_OP_constu"; | |
7917 | case DW_OP_consts: | |
7918 | return "DW_OP_consts"; | |
7919 | case DW_OP_dup: | |
7920 | return "DW_OP_dup"; | |
7921 | case DW_OP_drop: | |
7922 | return "DW_OP_drop"; | |
7923 | case DW_OP_over: | |
7924 | return "DW_OP_over"; | |
7925 | case DW_OP_pick: | |
7926 | return "DW_OP_pick"; | |
7927 | case DW_OP_swap: | |
7928 | return "DW_OP_swap"; | |
7929 | case DW_OP_rot: | |
7930 | return "DW_OP_rot"; | |
7931 | case DW_OP_xderef: | |
7932 | return "DW_OP_xderef"; | |
7933 | case DW_OP_abs: | |
7934 | return "DW_OP_abs"; | |
7935 | case DW_OP_and: | |
7936 | return "DW_OP_and"; | |
7937 | case DW_OP_div: | |
7938 | return "DW_OP_div"; | |
7939 | case DW_OP_minus: | |
7940 | return "DW_OP_minus"; | |
7941 | case DW_OP_mod: | |
7942 | return "DW_OP_mod"; | |
7943 | case DW_OP_mul: | |
7944 | return "DW_OP_mul"; | |
7945 | case DW_OP_neg: | |
7946 | return "DW_OP_neg"; | |
7947 | case DW_OP_not: | |
7948 | return "DW_OP_not"; | |
7949 | case DW_OP_or: | |
7950 | return "DW_OP_or"; | |
7951 | case DW_OP_plus: | |
7952 | return "DW_OP_plus"; | |
7953 | case DW_OP_plus_uconst: | |
7954 | return "DW_OP_plus_uconst"; | |
7955 | case DW_OP_shl: | |
7956 | return "DW_OP_shl"; | |
7957 | case DW_OP_shr: | |
7958 | return "DW_OP_shr"; | |
7959 | case DW_OP_shra: | |
7960 | return "DW_OP_shra"; | |
7961 | case DW_OP_xor: | |
7962 | return "DW_OP_xor"; | |
7963 | case DW_OP_bra: | |
7964 | return "DW_OP_bra"; | |
7965 | case DW_OP_eq: | |
7966 | return "DW_OP_eq"; | |
7967 | case DW_OP_ge: | |
7968 | return "DW_OP_ge"; | |
7969 | case DW_OP_gt: | |
7970 | return "DW_OP_gt"; | |
7971 | case DW_OP_le: | |
7972 | return "DW_OP_le"; | |
7973 | case DW_OP_lt: | |
7974 | return "DW_OP_lt"; | |
7975 | case DW_OP_ne: | |
7976 | return "DW_OP_ne"; | |
7977 | case DW_OP_skip: | |
7978 | return "DW_OP_skip"; | |
7979 | case DW_OP_lit0: | |
7980 | return "DW_OP_lit0"; | |
7981 | case DW_OP_lit1: | |
7982 | return "DW_OP_lit1"; | |
7983 | case DW_OP_lit2: | |
7984 | return "DW_OP_lit2"; | |
7985 | case DW_OP_lit3: | |
7986 | return "DW_OP_lit3"; | |
7987 | case DW_OP_lit4: | |
7988 | return "DW_OP_lit4"; | |
7989 | case DW_OP_lit5: | |
7990 | return "DW_OP_lit5"; | |
7991 | case DW_OP_lit6: | |
7992 | return "DW_OP_lit6"; | |
7993 | case DW_OP_lit7: | |
7994 | return "DW_OP_lit7"; | |
7995 | case DW_OP_lit8: | |
7996 | return "DW_OP_lit8"; | |
7997 | case DW_OP_lit9: | |
7998 | return "DW_OP_lit9"; | |
7999 | case DW_OP_lit10: | |
8000 | return "DW_OP_lit10"; | |
8001 | case DW_OP_lit11: | |
8002 | return "DW_OP_lit11"; | |
8003 | case DW_OP_lit12: | |
8004 | return "DW_OP_lit12"; | |
8005 | case DW_OP_lit13: | |
8006 | return "DW_OP_lit13"; | |
8007 | case DW_OP_lit14: | |
8008 | return "DW_OP_lit14"; | |
8009 | case DW_OP_lit15: | |
8010 | return "DW_OP_lit15"; | |
8011 | case DW_OP_lit16: | |
8012 | return "DW_OP_lit16"; | |
8013 | case DW_OP_lit17: | |
8014 | return "DW_OP_lit17"; | |
8015 | case DW_OP_lit18: | |
8016 | return "DW_OP_lit18"; | |
8017 | case DW_OP_lit19: | |
8018 | return "DW_OP_lit19"; | |
8019 | case DW_OP_lit20: | |
8020 | return "DW_OP_lit20"; | |
8021 | case DW_OP_lit21: | |
8022 | return "DW_OP_lit21"; | |
8023 | case DW_OP_lit22: | |
8024 | return "DW_OP_lit22"; | |
8025 | case DW_OP_lit23: | |
8026 | return "DW_OP_lit23"; | |
8027 | case DW_OP_lit24: | |
8028 | return "DW_OP_lit24"; | |
8029 | case DW_OP_lit25: | |
8030 | return "DW_OP_lit25"; | |
8031 | case DW_OP_lit26: | |
8032 | return "DW_OP_lit26"; | |
8033 | case DW_OP_lit27: | |
8034 | return "DW_OP_lit27"; | |
8035 | case DW_OP_lit28: | |
8036 | return "DW_OP_lit28"; | |
8037 | case DW_OP_lit29: | |
8038 | return "DW_OP_lit29"; | |
8039 | case DW_OP_lit30: | |
8040 | return "DW_OP_lit30"; | |
8041 | case DW_OP_lit31: | |
8042 | return "DW_OP_lit31"; | |
8043 | case DW_OP_reg0: | |
8044 | return "DW_OP_reg0"; | |
8045 | case DW_OP_reg1: | |
8046 | return "DW_OP_reg1"; | |
8047 | case DW_OP_reg2: | |
8048 | return "DW_OP_reg2"; | |
8049 | case DW_OP_reg3: | |
8050 | return "DW_OP_reg3"; | |
8051 | case DW_OP_reg4: | |
8052 | return "DW_OP_reg4"; | |
8053 | case DW_OP_reg5: | |
8054 | return "DW_OP_reg5"; | |
8055 | case DW_OP_reg6: | |
8056 | return "DW_OP_reg6"; | |
8057 | case DW_OP_reg7: | |
8058 | return "DW_OP_reg7"; | |
8059 | case DW_OP_reg8: | |
8060 | return "DW_OP_reg8"; | |
8061 | case DW_OP_reg9: | |
8062 | return "DW_OP_reg9"; | |
8063 | case DW_OP_reg10: | |
8064 | return "DW_OP_reg10"; | |
8065 | case DW_OP_reg11: | |
8066 | return "DW_OP_reg11"; | |
8067 | case DW_OP_reg12: | |
8068 | return "DW_OP_reg12"; | |
8069 | case DW_OP_reg13: | |
8070 | return "DW_OP_reg13"; | |
8071 | case DW_OP_reg14: | |
8072 | return "DW_OP_reg14"; | |
8073 | case DW_OP_reg15: | |
8074 | return "DW_OP_reg15"; | |
8075 | case DW_OP_reg16: | |
8076 | return "DW_OP_reg16"; | |
8077 | case DW_OP_reg17: | |
8078 | return "DW_OP_reg17"; | |
8079 | case DW_OP_reg18: | |
8080 | return "DW_OP_reg18"; | |
8081 | case DW_OP_reg19: | |
8082 | return "DW_OP_reg19"; | |
8083 | case DW_OP_reg20: | |
8084 | return "DW_OP_reg20"; | |
8085 | case DW_OP_reg21: | |
8086 | return "DW_OP_reg21"; | |
8087 | case DW_OP_reg22: | |
8088 | return "DW_OP_reg22"; | |
8089 | case DW_OP_reg23: | |
8090 | return "DW_OP_reg23"; | |
8091 | case DW_OP_reg24: | |
8092 | return "DW_OP_reg24"; | |
8093 | case DW_OP_reg25: | |
8094 | return "DW_OP_reg25"; | |
8095 | case DW_OP_reg26: | |
8096 | return "DW_OP_reg26"; | |
8097 | case DW_OP_reg27: | |
8098 | return "DW_OP_reg27"; | |
8099 | case DW_OP_reg28: | |
8100 | return "DW_OP_reg28"; | |
8101 | case DW_OP_reg29: | |
8102 | return "DW_OP_reg29"; | |
8103 | case DW_OP_reg30: | |
8104 | return "DW_OP_reg30"; | |
8105 | case DW_OP_reg31: | |
8106 | return "DW_OP_reg31"; | |
8107 | case DW_OP_breg0: | |
8108 | return "DW_OP_breg0"; | |
8109 | case DW_OP_breg1: | |
8110 | return "DW_OP_breg1"; | |
8111 | case DW_OP_breg2: | |
8112 | return "DW_OP_breg2"; | |
8113 | case DW_OP_breg3: | |
8114 | return "DW_OP_breg3"; | |
8115 | case DW_OP_breg4: | |
8116 | return "DW_OP_breg4"; | |
8117 | case DW_OP_breg5: | |
8118 | return "DW_OP_breg5"; | |
8119 | case DW_OP_breg6: | |
8120 | return "DW_OP_breg6"; | |
8121 | case DW_OP_breg7: | |
8122 | return "DW_OP_breg7"; | |
8123 | case DW_OP_breg8: | |
8124 | return "DW_OP_breg8"; | |
8125 | case DW_OP_breg9: | |
8126 | return "DW_OP_breg9"; | |
8127 | case DW_OP_breg10: | |
8128 | return "DW_OP_breg10"; | |
8129 | case DW_OP_breg11: | |
8130 | return "DW_OP_breg11"; | |
8131 | case DW_OP_breg12: | |
8132 | return "DW_OP_breg12"; | |
8133 | case DW_OP_breg13: | |
8134 | return "DW_OP_breg13"; | |
8135 | case DW_OP_breg14: | |
8136 | return "DW_OP_breg14"; | |
8137 | case DW_OP_breg15: | |
8138 | return "DW_OP_breg15"; | |
8139 | case DW_OP_breg16: | |
8140 | return "DW_OP_breg16"; | |
8141 | case DW_OP_breg17: | |
8142 | return "DW_OP_breg17"; | |
8143 | case DW_OP_breg18: | |
8144 | return "DW_OP_breg18"; | |
8145 | case DW_OP_breg19: | |
8146 | return "DW_OP_breg19"; | |
8147 | case DW_OP_breg20: | |
8148 | return "DW_OP_breg20"; | |
8149 | case DW_OP_breg21: | |
8150 | return "DW_OP_breg21"; | |
8151 | case DW_OP_breg22: | |
8152 | return "DW_OP_breg22"; | |
8153 | case DW_OP_breg23: | |
8154 | return "DW_OP_breg23"; | |
8155 | case DW_OP_breg24: | |
8156 | return "DW_OP_breg24"; | |
8157 | case DW_OP_breg25: | |
8158 | return "DW_OP_breg25"; | |
8159 | case DW_OP_breg26: | |
8160 | return "DW_OP_breg26"; | |
8161 | case DW_OP_breg27: | |
8162 | return "DW_OP_breg27"; | |
8163 | case DW_OP_breg28: | |
8164 | return "DW_OP_breg28"; | |
8165 | case DW_OP_breg29: | |
8166 | return "DW_OP_breg29"; | |
8167 | case DW_OP_breg30: | |
8168 | return "DW_OP_breg30"; | |
8169 | case DW_OP_breg31: | |
8170 | return "DW_OP_breg31"; | |
8171 | case DW_OP_regx: | |
8172 | return "DW_OP_regx"; | |
8173 | case DW_OP_fbreg: | |
8174 | return "DW_OP_fbreg"; | |
8175 | case DW_OP_bregx: | |
8176 | return "DW_OP_bregx"; | |
8177 | case DW_OP_piece: | |
8178 | return "DW_OP_piece"; | |
8179 | case DW_OP_deref_size: | |
8180 | return "DW_OP_deref_size"; | |
8181 | case DW_OP_xderef_size: | |
8182 | return "DW_OP_xderef_size"; | |
8183 | case DW_OP_nop: | |
8184 | return "DW_OP_nop"; | |
ed348acc EZ |
8185 | /* DWARF 3 extensions. */ |
8186 | case DW_OP_push_object_address: | |
8187 | return "DW_OP_push_object_address"; | |
8188 | case DW_OP_call2: | |
8189 | return "DW_OP_call2"; | |
8190 | case DW_OP_call4: | |
8191 | return "DW_OP_call4"; | |
8192 | case DW_OP_call_ref: | |
8193 | return "DW_OP_call_ref"; | |
8194 | /* GNU extensions. */ | |
8195 | case DW_OP_GNU_push_tls_address: | |
8196 | return "DW_OP_GNU_push_tls_address"; | |
c906108c SS |
8197 | default: |
8198 | return "OP_<unknown>"; | |
8199 | } | |
8200 | } | |
8201 | ||
8202 | static char * | |
fba45db2 | 8203 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
8204 | { |
8205 | if (mybool) | |
8206 | return "TRUE"; | |
8207 | else | |
8208 | return "FALSE"; | |
8209 | } | |
8210 | ||
8211 | /* Convert a DWARF type code into its string name. */ | |
8212 | ||
8213 | static char * | |
aa1ee363 | 8214 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
8215 | { |
8216 | switch (enc) | |
8217 | { | |
8218 | case DW_ATE_address: | |
8219 | return "DW_ATE_address"; | |
8220 | case DW_ATE_boolean: | |
8221 | return "DW_ATE_boolean"; | |
8222 | case DW_ATE_complex_float: | |
8223 | return "DW_ATE_complex_float"; | |
8224 | case DW_ATE_float: | |
8225 | return "DW_ATE_float"; | |
8226 | case DW_ATE_signed: | |
8227 | return "DW_ATE_signed"; | |
8228 | case DW_ATE_signed_char: | |
8229 | return "DW_ATE_signed_char"; | |
8230 | case DW_ATE_unsigned: | |
8231 | return "DW_ATE_unsigned"; | |
8232 | case DW_ATE_unsigned_char: | |
8233 | return "DW_ATE_unsigned_char"; | |
d9fa45fe DC |
8234 | case DW_ATE_imaginary_float: |
8235 | return "DW_ATE_imaginary_float"; | |
c906108c SS |
8236 | default: |
8237 | return "DW_ATE_<unknown>"; | |
8238 | } | |
8239 | } | |
8240 | ||
8241 | /* Convert a DWARF call frame info operation to its string name. */ | |
8242 | ||
8243 | #if 0 | |
8244 | static char * | |
aa1ee363 | 8245 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
8246 | { |
8247 | switch (cfi_opc) | |
8248 | { | |
8249 | case DW_CFA_advance_loc: | |
8250 | return "DW_CFA_advance_loc"; | |
8251 | case DW_CFA_offset: | |
8252 | return "DW_CFA_offset"; | |
8253 | case DW_CFA_restore: | |
8254 | return "DW_CFA_restore"; | |
8255 | case DW_CFA_nop: | |
8256 | return "DW_CFA_nop"; | |
8257 | case DW_CFA_set_loc: | |
8258 | return "DW_CFA_set_loc"; | |
8259 | case DW_CFA_advance_loc1: | |
8260 | return "DW_CFA_advance_loc1"; | |
8261 | case DW_CFA_advance_loc2: | |
8262 | return "DW_CFA_advance_loc2"; | |
8263 | case DW_CFA_advance_loc4: | |
8264 | return "DW_CFA_advance_loc4"; | |
8265 | case DW_CFA_offset_extended: | |
8266 | return "DW_CFA_offset_extended"; | |
8267 | case DW_CFA_restore_extended: | |
8268 | return "DW_CFA_restore_extended"; | |
8269 | case DW_CFA_undefined: | |
8270 | return "DW_CFA_undefined"; | |
8271 | case DW_CFA_same_value: | |
8272 | return "DW_CFA_same_value"; | |
8273 | case DW_CFA_register: | |
8274 | return "DW_CFA_register"; | |
8275 | case DW_CFA_remember_state: | |
8276 | return "DW_CFA_remember_state"; | |
8277 | case DW_CFA_restore_state: | |
8278 | return "DW_CFA_restore_state"; | |
8279 | case DW_CFA_def_cfa: | |
8280 | return "DW_CFA_def_cfa"; | |
8281 | case DW_CFA_def_cfa_register: | |
8282 | return "DW_CFA_def_cfa_register"; | |
8283 | case DW_CFA_def_cfa_offset: | |
8284 | return "DW_CFA_def_cfa_offset"; | |
985cb1a3 JM |
8285 | |
8286 | /* DWARF 3 */ | |
8287 | case DW_CFA_def_cfa_expression: | |
8288 | return "DW_CFA_def_cfa_expression"; | |
8289 | case DW_CFA_expression: | |
8290 | return "DW_CFA_expression"; | |
8291 | case DW_CFA_offset_extended_sf: | |
8292 | return "DW_CFA_offset_extended_sf"; | |
8293 | case DW_CFA_def_cfa_sf: | |
8294 | return "DW_CFA_def_cfa_sf"; | |
8295 | case DW_CFA_def_cfa_offset_sf: | |
8296 | return "DW_CFA_def_cfa_offset_sf"; | |
8297 | ||
c906108c SS |
8298 | /* SGI/MIPS specific */ |
8299 | case DW_CFA_MIPS_advance_loc8: | |
8300 | return "DW_CFA_MIPS_advance_loc8"; | |
985cb1a3 JM |
8301 | |
8302 | /* GNU extensions */ | |
8303 | case DW_CFA_GNU_window_save: | |
8304 | return "DW_CFA_GNU_window_save"; | |
8305 | case DW_CFA_GNU_args_size: | |
8306 | return "DW_CFA_GNU_args_size"; | |
8307 | case DW_CFA_GNU_negative_offset_extended: | |
8308 | return "DW_CFA_GNU_negative_offset_extended"; | |
8309 | ||
c906108c SS |
8310 | default: |
8311 | return "DW_CFA_<unknown>"; | |
8312 | } | |
8313 | } | |
8314 | #endif | |
8315 | ||
f9aca02d | 8316 | static void |
fba45db2 | 8317 | dump_die (struct die_info *die) |
c906108c SS |
8318 | { |
8319 | unsigned int i; | |
8320 | ||
48cd0caa | 8321 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 8322 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 8323 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 8324 | dwarf_bool_name (die->child != NULL)); |
c906108c | 8325 | |
48cd0caa | 8326 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
8327 | for (i = 0; i < die->num_attrs; ++i) |
8328 | { | |
48cd0caa | 8329 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
8330 | dwarf_attr_name (die->attrs[i].name), |
8331 | dwarf_form_name (die->attrs[i].form)); | |
8332 | switch (die->attrs[i].form) | |
8333 | { | |
8334 | case DW_FORM_ref_addr: | |
8335 | case DW_FORM_addr: | |
48cd0caa | 8336 | fprintf_unfiltered (gdb_stderr, "address: "); |
c906108c SS |
8337 | print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr); |
8338 | break; | |
8339 | case DW_FORM_block2: | |
8340 | case DW_FORM_block4: | |
8341 | case DW_FORM_block: | |
8342 | case DW_FORM_block1: | |
48cd0caa | 8343 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 8344 | break; |
10b3939b DJ |
8345 | case DW_FORM_ref1: |
8346 | case DW_FORM_ref2: | |
8347 | case DW_FORM_ref4: | |
8348 | fprintf_unfiltered (gdb_stderr, "constant ref: %ld (adjusted)", | |
8349 | (long) (DW_ADDR (&die->attrs[i]))); | |
8350 | break; | |
c906108c SS |
8351 | case DW_FORM_data1: |
8352 | case DW_FORM_data2: | |
8353 | case DW_FORM_data4: | |
ce5d95e1 | 8354 | case DW_FORM_data8: |
c906108c SS |
8355 | case DW_FORM_udata: |
8356 | case DW_FORM_sdata: | |
48cd0caa | 8357 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
8358 | break; |
8359 | case DW_FORM_string: | |
4bdf3d34 | 8360 | case DW_FORM_strp: |
48cd0caa | 8361 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 8362 | DW_STRING (&die->attrs[i]) |
c5aa993b | 8363 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
8364 | break; |
8365 | case DW_FORM_flag: | |
8366 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 8367 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 8368 | else |
48cd0caa | 8369 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 8370 | break; |
a8329558 KW |
8371 | case DW_FORM_indirect: |
8372 | /* the reader will have reduced the indirect form to | |
8373 | the "base form" so this form should not occur */ | |
48cd0caa | 8374 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 8375 | break; |
c906108c | 8376 | default: |
48cd0caa | 8377 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 8378 | die->attrs[i].form); |
c906108c | 8379 | } |
48cd0caa | 8380 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
8381 | } |
8382 | } | |
8383 | ||
f9aca02d | 8384 | static void |
fba45db2 | 8385 | dump_die_list (struct die_info *die) |
c906108c SS |
8386 | { |
8387 | while (die) | |
8388 | { | |
8389 | dump_die (die); | |
639d11d3 DC |
8390 | if (die->child != NULL) |
8391 | dump_die_list (die->child); | |
8392 | if (die->sibling != NULL) | |
8393 | dump_die_list (die->sibling); | |
c906108c SS |
8394 | } |
8395 | } | |
8396 | ||
f9aca02d | 8397 | static void |
10b3939b DJ |
8398 | store_in_ref_table (unsigned int offset, struct die_info *die, |
8399 | struct dwarf2_cu *cu) | |
c906108c SS |
8400 | { |
8401 | int h; | |
8402 | struct die_info *old; | |
8403 | ||
8404 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8405 | old = cu->die_ref_table[h]; |
c906108c | 8406 | die->next_ref = old; |
10b3939b | 8407 | cu->die_ref_table[h] = die; |
c906108c SS |
8408 | } |
8409 | ||
8410 | static unsigned int | |
e142c38c | 8411 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
8412 | { |
8413 | unsigned int result = 0; | |
8414 | ||
8415 | switch (attr->form) | |
8416 | { | |
8417 | case DW_FORM_ref_addr: | |
c906108c SS |
8418 | case DW_FORM_ref1: |
8419 | case DW_FORM_ref2: | |
8420 | case DW_FORM_ref4: | |
613e1657 | 8421 | case DW_FORM_ref8: |
c906108c | 8422 | case DW_FORM_ref_udata: |
10b3939b | 8423 | result = DW_ADDR (attr); |
c906108c SS |
8424 | break; |
8425 | default: | |
4d3c2250 KB |
8426 | complaint (&symfile_complaints, |
8427 | "unsupported die ref attribute form: '%s'", | |
8428 | dwarf_form_name (attr->form)); | |
c906108c SS |
8429 | } |
8430 | return result; | |
8431 | } | |
8432 | ||
a02abb62 JB |
8433 | /* Return the constant value held by the given attribute. Return -1 |
8434 | if the value held by the attribute is not constant. */ | |
8435 | ||
8436 | static int | |
8437 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
8438 | { | |
8439 | if (attr->form == DW_FORM_sdata) | |
8440 | return DW_SND (attr); | |
8441 | else if (attr->form == DW_FORM_udata | |
8442 | || attr->form == DW_FORM_data1 | |
8443 | || attr->form == DW_FORM_data2 | |
8444 | || attr->form == DW_FORM_data4 | |
8445 | || attr->form == DW_FORM_data8) | |
8446 | return DW_UNSND (attr); | |
8447 | else | |
8448 | { | |
8449 | complaint (&symfile_complaints, "Attribute value is not a constant (%s)", | |
8450 | dwarf_form_name (attr->form)); | |
8451 | return default_value; | |
8452 | } | |
8453 | } | |
8454 | ||
f9aca02d | 8455 | static struct die_info * |
10b3939b DJ |
8456 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
8457 | struct dwarf2_cu *cu) | |
c906108c SS |
8458 | { |
8459 | struct die_info *die; | |
10b3939b | 8460 | unsigned int offset; |
c906108c | 8461 | int h; |
10b3939b DJ |
8462 | struct die_info temp_die; |
8463 | struct dwarf2_cu *target_cu; | |
8464 | ||
8465 | offset = dwarf2_get_ref_die_offset (attr, cu); | |
8466 | ||
8467 | if (DW_ADDR (attr) < cu->header.offset | |
8468 | || DW_ADDR (attr) >= cu->header.offset + cu->header.length) | |
8469 | { | |
8470 | struct dwarf2_per_cu_data *per_cu; | |
8471 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (attr), | |
8472 | cu->objfile); | |
8473 | target_cu = per_cu->cu; | |
8474 | } | |
8475 | else | |
8476 | target_cu = cu; | |
c906108c SS |
8477 | |
8478 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8479 | die = target_cu->die_ref_table[h]; |
c906108c SS |
8480 | while (die) |
8481 | { | |
8482 | if (die->offset == offset) | |
10b3939b | 8483 | return die; |
c906108c SS |
8484 | die = die->next_ref; |
8485 | } | |
10b3939b DJ |
8486 | |
8487 | error ("Dwarf Error: Cannot find DIE at 0x%lx referenced from DIE " | |
8488 | "at 0x%lx [in module %s]", | |
8489 | (long) src_die->offset, (long) offset, cu->objfile->name); | |
8490 | ||
c906108c SS |
8491 | return NULL; |
8492 | } | |
8493 | ||
8494 | static struct type * | |
e142c38c DJ |
8495 | dwarf2_fundamental_type (struct objfile *objfile, int typeid, |
8496 | struct dwarf2_cu *cu) | |
c906108c SS |
8497 | { |
8498 | if (typeid < 0 || typeid >= FT_NUM_MEMBERS) | |
8499 | { | |
659b0389 ML |
8500 | error ("Dwarf Error: internal error - invalid fundamental type id %d [in module %s]", |
8501 | typeid, objfile->name); | |
c906108c SS |
8502 | } |
8503 | ||
8504 | /* Look for this particular type in the fundamental type vector. If | |
8505 | one is not found, create and install one appropriate for the | |
8506 | current language and the current target machine. */ | |
8507 | ||
e142c38c | 8508 | if (cu->ftypes[typeid] == NULL) |
c906108c | 8509 | { |
e142c38c | 8510 | cu->ftypes[typeid] = cu->language_defn->la_fund_type (objfile, typeid); |
c906108c SS |
8511 | } |
8512 | ||
e142c38c | 8513 | return (cu->ftypes[typeid]); |
c906108c SS |
8514 | } |
8515 | ||
8516 | /* Decode simple location descriptions. | |
8517 | Given a pointer to a dwarf block that defines a location, compute | |
8518 | the location and return the value. | |
8519 | ||
4cecd739 DJ |
8520 | NOTE drow/2003-11-18: This function is called in two situations |
8521 | now: for the address of static or global variables (partial symbols | |
8522 | only) and for offsets into structures which are expected to be | |
8523 | (more or less) constant. The partial symbol case should go away, | |
8524 | and only the constant case should remain. That will let this | |
8525 | function complain more accurately. A few special modes are allowed | |
8526 | without complaint for global variables (for instance, global | |
8527 | register values and thread-local values). | |
c906108c SS |
8528 | |
8529 | A location description containing no operations indicates that the | |
4cecd739 | 8530 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
8531 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
8532 | callers will only want a very basic result and this can become a | |
8533 | complaint. | |
c906108c SS |
8534 | |
8535 | When the result is a register number, the global isreg flag is set, | |
8536 | otherwise it is cleared. | |
8537 | ||
c906108c SS |
8538 | Note that stack[0] is unused except as a default error return. |
8539 | Note that stack overflow is not yet handled. */ | |
8540 | ||
8541 | static CORE_ADDR | |
e7c27a73 | 8542 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 8543 | { |
e7c27a73 DJ |
8544 | struct objfile *objfile = cu->objfile; |
8545 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
8546 | int i; |
8547 | int size = blk->size; | |
8548 | char *data = blk->data; | |
8549 | CORE_ADDR stack[64]; | |
8550 | int stacki; | |
8551 | unsigned int bytes_read, unsnd; | |
8552 | unsigned char op; | |
8553 | ||
8554 | i = 0; | |
8555 | stacki = 0; | |
8556 | stack[stacki] = 0; | |
8557 | isreg = 0; | |
c906108c SS |
8558 | |
8559 | while (i < size) | |
8560 | { | |
c906108c SS |
8561 | op = data[i++]; |
8562 | switch (op) | |
8563 | { | |
f1bea926 JM |
8564 | case DW_OP_lit0: |
8565 | case DW_OP_lit1: | |
8566 | case DW_OP_lit2: | |
8567 | case DW_OP_lit3: | |
8568 | case DW_OP_lit4: | |
8569 | case DW_OP_lit5: | |
8570 | case DW_OP_lit6: | |
8571 | case DW_OP_lit7: | |
8572 | case DW_OP_lit8: | |
8573 | case DW_OP_lit9: | |
8574 | case DW_OP_lit10: | |
8575 | case DW_OP_lit11: | |
8576 | case DW_OP_lit12: | |
8577 | case DW_OP_lit13: | |
8578 | case DW_OP_lit14: | |
8579 | case DW_OP_lit15: | |
8580 | case DW_OP_lit16: | |
8581 | case DW_OP_lit17: | |
8582 | case DW_OP_lit18: | |
8583 | case DW_OP_lit19: | |
8584 | case DW_OP_lit20: | |
8585 | case DW_OP_lit21: | |
8586 | case DW_OP_lit22: | |
8587 | case DW_OP_lit23: | |
8588 | case DW_OP_lit24: | |
8589 | case DW_OP_lit25: | |
8590 | case DW_OP_lit26: | |
8591 | case DW_OP_lit27: | |
8592 | case DW_OP_lit28: | |
8593 | case DW_OP_lit29: | |
8594 | case DW_OP_lit30: | |
8595 | case DW_OP_lit31: | |
8596 | stack[++stacki] = op - DW_OP_lit0; | |
8597 | break; | |
8598 | ||
c906108c SS |
8599 | case DW_OP_reg0: |
8600 | case DW_OP_reg1: | |
8601 | case DW_OP_reg2: | |
8602 | case DW_OP_reg3: | |
8603 | case DW_OP_reg4: | |
8604 | case DW_OP_reg5: | |
8605 | case DW_OP_reg6: | |
8606 | case DW_OP_reg7: | |
8607 | case DW_OP_reg8: | |
8608 | case DW_OP_reg9: | |
8609 | case DW_OP_reg10: | |
8610 | case DW_OP_reg11: | |
8611 | case DW_OP_reg12: | |
8612 | case DW_OP_reg13: | |
8613 | case DW_OP_reg14: | |
8614 | case DW_OP_reg15: | |
8615 | case DW_OP_reg16: | |
8616 | case DW_OP_reg17: | |
8617 | case DW_OP_reg18: | |
8618 | case DW_OP_reg19: | |
8619 | case DW_OP_reg20: | |
8620 | case DW_OP_reg21: | |
8621 | case DW_OP_reg22: | |
8622 | case DW_OP_reg23: | |
8623 | case DW_OP_reg24: | |
8624 | case DW_OP_reg25: | |
8625 | case DW_OP_reg26: | |
8626 | case DW_OP_reg27: | |
8627 | case DW_OP_reg28: | |
8628 | case DW_OP_reg29: | |
8629 | case DW_OP_reg30: | |
8630 | case DW_OP_reg31: | |
8631 | isreg = 1; | |
8632 | stack[++stacki] = op - DW_OP_reg0; | |
4cecd739 DJ |
8633 | if (i < size) |
8634 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
8635 | break; |
8636 | ||
8637 | case DW_OP_regx: | |
8638 | isreg = 1; | |
8639 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
8640 | i += bytes_read; | |
c906108c | 8641 | stack[++stacki] = unsnd; |
4cecd739 DJ |
8642 | if (i < size) |
8643 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
8644 | break; |
8645 | ||
8646 | case DW_OP_addr: | |
107d2387 | 8647 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 8648 | cu, &bytes_read); |
107d2387 | 8649 | i += bytes_read; |
c906108c SS |
8650 | break; |
8651 | ||
8652 | case DW_OP_const1u: | |
8653 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
8654 | i += 1; | |
8655 | break; | |
8656 | ||
8657 | case DW_OP_const1s: | |
8658 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
8659 | i += 1; | |
8660 | break; | |
8661 | ||
8662 | case DW_OP_const2u: | |
8663 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
8664 | i += 2; | |
8665 | break; | |
8666 | ||
8667 | case DW_OP_const2s: | |
8668 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
8669 | i += 2; | |
8670 | break; | |
8671 | ||
8672 | case DW_OP_const4u: | |
8673 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
8674 | i += 4; | |
8675 | break; | |
8676 | ||
8677 | case DW_OP_const4s: | |
8678 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
8679 | i += 4; | |
8680 | break; | |
8681 | ||
8682 | case DW_OP_constu: | |
8683 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 8684 | &bytes_read); |
c906108c SS |
8685 | i += bytes_read; |
8686 | break; | |
8687 | ||
8688 | case DW_OP_consts: | |
8689 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
8690 | i += bytes_read; | |
8691 | break; | |
8692 | ||
f1bea926 JM |
8693 | case DW_OP_dup: |
8694 | stack[stacki + 1] = stack[stacki]; | |
8695 | stacki++; | |
8696 | break; | |
8697 | ||
c906108c SS |
8698 | case DW_OP_plus: |
8699 | stack[stacki - 1] += stack[stacki]; | |
8700 | stacki--; | |
8701 | break; | |
8702 | ||
8703 | case DW_OP_plus_uconst: | |
8704 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
8705 | i += bytes_read; | |
8706 | break; | |
8707 | ||
8708 | case DW_OP_minus: | |
f1bea926 | 8709 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
8710 | stacki--; |
8711 | break; | |
8712 | ||
7a292a7a | 8713 | case DW_OP_deref: |
7a292a7a | 8714 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
8715 | this using GDB's address_class enum. This is valid for partial |
8716 | global symbols, although the variable's address will be bogus | |
8717 | in the psymtab. */ | |
7a292a7a | 8718 | if (i < size) |
4d3c2250 | 8719 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
8720 | break; |
8721 | ||
9d774e44 | 8722 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
8723 | /* The top of the stack has the offset from the beginning |
8724 | of the thread control block at which the variable is located. */ | |
8725 | /* Nothing should follow this operator, so the top of stack would | |
8726 | be returned. */ | |
4cecd739 DJ |
8727 | /* This is valid for partial global symbols, but the variable's |
8728 | address will be bogus in the psymtab. */ | |
9d774e44 | 8729 | if (i < size) |
4d3c2250 | 8730 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
8731 | break; |
8732 | ||
c906108c | 8733 | default: |
4d3c2250 KB |
8734 | complaint (&symfile_complaints, "unsupported stack op: '%s'", |
8735 | dwarf_stack_op_name (op)); | |
c906108c SS |
8736 | return (stack[stacki]); |
8737 | } | |
8738 | } | |
8739 | return (stack[stacki]); | |
8740 | } | |
8741 | ||
8742 | /* memory allocation interface */ | |
8743 | ||
c906108c | 8744 | static struct dwarf_block * |
7b5a2f43 | 8745 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
8746 | { |
8747 | struct dwarf_block *blk; | |
8748 | ||
8749 | blk = (struct dwarf_block *) | |
7b5a2f43 | 8750 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
8751 | return (blk); |
8752 | } | |
8753 | ||
8754 | static struct abbrev_info * | |
f3dd6933 | 8755 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
8756 | { |
8757 | struct abbrev_info *abbrev; | |
8758 | ||
f3dd6933 DJ |
8759 | abbrev = (struct abbrev_info *) |
8760 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
8761 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8762 | return (abbrev); | |
8763 | } | |
8764 | ||
8765 | static struct die_info * | |
fba45db2 | 8766 | dwarf_alloc_die (void) |
c906108c SS |
8767 | { |
8768 | struct die_info *die; | |
8769 | ||
8770 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
8771 | memset (die, 0, sizeof (struct die_info)); | |
8772 | return (die); | |
8773 | } | |
2e276125 JB |
8774 | |
8775 | \f | |
8776 | /* Macro support. */ | |
8777 | ||
8778 | ||
8779 | /* Return the full name of file number I in *LH's file name table. | |
8780 | Use COMP_DIR as the name of the current directory of the | |
8781 | compilation. The result is allocated using xmalloc; the caller is | |
8782 | responsible for freeing it. */ | |
8783 | static char * | |
8784 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
8785 | { | |
8786 | struct file_entry *fe = &lh->file_names[file - 1]; | |
8787 | ||
8788 | if (IS_ABSOLUTE_PATH (fe->name)) | |
8789 | return xstrdup (fe->name); | |
8790 | else | |
8791 | { | |
8792 | const char *dir; | |
8793 | int dir_len; | |
8794 | char *full_name; | |
8795 | ||
8796 | if (fe->dir_index) | |
8797 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8798 | else | |
8799 | dir = comp_dir; | |
8800 | ||
8801 | if (dir) | |
8802 | { | |
8803 | dir_len = strlen (dir); | |
8804 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
8805 | strcpy (full_name, dir); | |
8806 | full_name[dir_len] = '/'; | |
8807 | strcpy (full_name + dir_len + 1, fe->name); | |
8808 | return full_name; | |
8809 | } | |
8810 | else | |
8811 | return xstrdup (fe->name); | |
8812 | } | |
8813 | } | |
8814 | ||
8815 | ||
8816 | static struct macro_source_file * | |
8817 | macro_start_file (int file, int line, | |
8818 | struct macro_source_file *current_file, | |
8819 | const char *comp_dir, | |
8820 | struct line_header *lh, struct objfile *objfile) | |
8821 | { | |
8822 | /* The full name of this source file. */ | |
8823 | char *full_name = file_full_name (file, lh, comp_dir); | |
8824 | ||
8825 | /* We don't create a macro table for this compilation unit | |
8826 | at all until we actually get a filename. */ | |
8827 | if (! pending_macros) | |
4a146b47 | 8828 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 8829 | objfile->macro_cache); |
2e276125 JB |
8830 | |
8831 | if (! current_file) | |
8832 | /* If we have no current file, then this must be the start_file | |
8833 | directive for the compilation unit's main source file. */ | |
8834 | current_file = macro_set_main (pending_macros, full_name); | |
8835 | else | |
8836 | current_file = macro_include (current_file, line, full_name); | |
8837 | ||
8838 | xfree (full_name); | |
8839 | ||
8840 | return current_file; | |
8841 | } | |
8842 | ||
8843 | ||
8844 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
8845 | followed by a null byte. */ | |
8846 | static char * | |
8847 | copy_string (const char *buf, int len) | |
8848 | { | |
8849 | char *s = xmalloc (len + 1); | |
8850 | memcpy (s, buf, len); | |
8851 | s[len] = '\0'; | |
8852 | ||
8853 | return s; | |
8854 | } | |
8855 | ||
8856 | ||
8857 | static const char * | |
8858 | consume_improper_spaces (const char *p, const char *body) | |
8859 | { | |
8860 | if (*p == ' ') | |
8861 | { | |
4d3c2250 KB |
8862 | complaint (&symfile_complaints, |
8863 | "macro definition contains spaces in formal argument list:\n`%s'", | |
8864 | body); | |
2e276125 JB |
8865 | |
8866 | while (*p == ' ') | |
8867 | p++; | |
8868 | } | |
8869 | ||
8870 | return p; | |
8871 | } | |
8872 | ||
8873 | ||
8874 | static void | |
8875 | parse_macro_definition (struct macro_source_file *file, int line, | |
8876 | const char *body) | |
8877 | { | |
8878 | const char *p; | |
8879 | ||
8880 | /* The body string takes one of two forms. For object-like macro | |
8881 | definitions, it should be: | |
8882 | ||
8883 | <macro name> " " <definition> | |
8884 | ||
8885 | For function-like macro definitions, it should be: | |
8886 | ||
8887 | <macro name> "() " <definition> | |
8888 | or | |
8889 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
8890 | ||
8891 | Spaces may appear only where explicitly indicated, and in the | |
8892 | <definition>. | |
8893 | ||
8894 | The Dwarf 2 spec says that an object-like macro's name is always | |
8895 | followed by a space, but versions of GCC around March 2002 omit | |
8896 | the space when the macro's definition is the empty string. | |
8897 | ||
8898 | The Dwarf 2 spec says that there should be no spaces between the | |
8899 | formal arguments in a function-like macro's formal argument list, | |
8900 | but versions of GCC around March 2002 include spaces after the | |
8901 | commas. */ | |
8902 | ||
8903 | ||
8904 | /* Find the extent of the macro name. The macro name is terminated | |
8905 | by either a space or null character (for an object-like macro) or | |
8906 | an opening paren (for a function-like macro). */ | |
8907 | for (p = body; *p; p++) | |
8908 | if (*p == ' ' || *p == '(') | |
8909 | break; | |
8910 | ||
8911 | if (*p == ' ' || *p == '\0') | |
8912 | { | |
8913 | /* It's an object-like macro. */ | |
8914 | int name_len = p - body; | |
8915 | char *name = copy_string (body, name_len); | |
8916 | const char *replacement; | |
8917 | ||
8918 | if (*p == ' ') | |
8919 | replacement = body + name_len + 1; | |
8920 | else | |
8921 | { | |
4d3c2250 | 8922 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8923 | replacement = body + name_len; |
8924 | } | |
8925 | ||
8926 | macro_define_object (file, line, name, replacement); | |
8927 | ||
8928 | xfree (name); | |
8929 | } | |
8930 | else if (*p == '(') | |
8931 | { | |
8932 | /* It's a function-like macro. */ | |
8933 | char *name = copy_string (body, p - body); | |
8934 | int argc = 0; | |
8935 | int argv_size = 1; | |
8936 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
8937 | ||
8938 | p++; | |
8939 | ||
8940 | p = consume_improper_spaces (p, body); | |
8941 | ||
8942 | /* Parse the formal argument list. */ | |
8943 | while (*p && *p != ')') | |
8944 | { | |
8945 | /* Find the extent of the current argument name. */ | |
8946 | const char *arg_start = p; | |
8947 | ||
8948 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
8949 | p++; | |
8950 | ||
8951 | if (! *p || p == arg_start) | |
4d3c2250 | 8952 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8953 | else |
8954 | { | |
8955 | /* Make sure argv has room for the new argument. */ | |
8956 | if (argc >= argv_size) | |
8957 | { | |
8958 | argv_size *= 2; | |
8959 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
8960 | } | |
8961 | ||
8962 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
8963 | } | |
8964 | ||
8965 | p = consume_improper_spaces (p, body); | |
8966 | ||
8967 | /* Consume the comma, if present. */ | |
8968 | if (*p == ',') | |
8969 | { | |
8970 | p++; | |
8971 | ||
8972 | p = consume_improper_spaces (p, body); | |
8973 | } | |
8974 | } | |
8975 | ||
8976 | if (*p == ')') | |
8977 | { | |
8978 | p++; | |
8979 | ||
8980 | if (*p == ' ') | |
8981 | /* Perfectly formed definition, no complaints. */ | |
8982 | macro_define_function (file, line, name, | |
8983 | argc, (const char **) argv, | |
8984 | p + 1); | |
8985 | else if (*p == '\0') | |
8986 | { | |
8987 | /* Complain, but do define it. */ | |
4d3c2250 | 8988 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8989 | macro_define_function (file, line, name, |
8990 | argc, (const char **) argv, | |
8991 | p); | |
8992 | } | |
8993 | else | |
8994 | /* Just complain. */ | |
4d3c2250 | 8995 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8996 | } |
8997 | else | |
8998 | /* Just complain. */ | |
4d3c2250 | 8999 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9000 | |
9001 | xfree (name); | |
9002 | { | |
9003 | int i; | |
9004 | ||
9005 | for (i = 0; i < argc; i++) | |
9006 | xfree (argv[i]); | |
9007 | } | |
9008 | xfree (argv); | |
9009 | } | |
9010 | else | |
4d3c2250 | 9011 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9012 | } |
9013 | ||
9014 | ||
9015 | static void | |
9016 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
9017 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 9018 | struct dwarf2_cu *cu) |
2e276125 JB |
9019 | { |
9020 | char *mac_ptr, *mac_end; | |
9021 | struct macro_source_file *current_file = 0; | |
9022 | ||
6502dd73 | 9023 | if (dwarf2_per_objfile->macinfo_buffer == NULL) |
2e276125 | 9024 | { |
4d3c2250 | 9025 | complaint (&symfile_complaints, "missing .debug_macinfo section"); |
2e276125 JB |
9026 | return; |
9027 | } | |
9028 | ||
6502dd73 DJ |
9029 | mac_ptr = dwarf2_per_objfile->macinfo_buffer + offset; |
9030 | mac_end = dwarf2_per_objfile->macinfo_buffer | |
9031 | + dwarf2_per_objfile->macinfo_size; | |
2e276125 JB |
9032 | |
9033 | for (;;) | |
9034 | { | |
9035 | enum dwarf_macinfo_record_type macinfo_type; | |
9036 | ||
9037 | /* Do we at least have room for a macinfo type byte? */ | |
9038 | if (mac_ptr >= mac_end) | |
9039 | { | |
4d3c2250 | 9040 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9041 | return; |
9042 | } | |
9043 | ||
9044 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
9045 | mac_ptr++; | |
9046 | ||
9047 | switch (macinfo_type) | |
9048 | { | |
9049 | /* A zero macinfo type indicates the end of the macro | |
9050 | information. */ | |
9051 | case 0: | |
9052 | return; | |
9053 | ||
9054 | case DW_MACINFO_define: | |
9055 | case DW_MACINFO_undef: | |
9056 | { | |
9057 | int bytes_read; | |
9058 | int line; | |
9059 | char *body; | |
9060 | ||
9061 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9062 | mac_ptr += bytes_read; | |
9063 | body = read_string (abfd, mac_ptr, &bytes_read); | |
9064 | mac_ptr += bytes_read; | |
9065 | ||
9066 | if (! current_file) | |
4d3c2250 KB |
9067 | complaint (&symfile_complaints, |
9068 | "debug info gives macro %s outside of any file: %s", | |
9069 | macinfo_type == | |
9070 | DW_MACINFO_define ? "definition" : macinfo_type == | |
9071 | DW_MACINFO_undef ? "undefinition" : | |
9072 | "something-or-other", body); | |
2e276125 JB |
9073 | else |
9074 | { | |
9075 | if (macinfo_type == DW_MACINFO_define) | |
9076 | parse_macro_definition (current_file, line, body); | |
9077 | else if (macinfo_type == DW_MACINFO_undef) | |
9078 | macro_undef (current_file, line, body); | |
9079 | } | |
9080 | } | |
9081 | break; | |
9082 | ||
9083 | case DW_MACINFO_start_file: | |
9084 | { | |
9085 | int bytes_read; | |
9086 | int line, file; | |
9087 | ||
9088 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9089 | mac_ptr += bytes_read; | |
9090 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9091 | mac_ptr += bytes_read; | |
9092 | ||
9093 | current_file = macro_start_file (file, line, | |
9094 | current_file, comp_dir, | |
e7c27a73 | 9095 | lh, cu->objfile); |
2e276125 JB |
9096 | } |
9097 | break; | |
9098 | ||
9099 | case DW_MACINFO_end_file: | |
9100 | if (! current_file) | |
4d3c2250 KB |
9101 | complaint (&symfile_complaints, |
9102 | "macro debug info has an unmatched `close_file' directive"); | |
2e276125 JB |
9103 | else |
9104 | { | |
9105 | current_file = current_file->included_by; | |
9106 | if (! current_file) | |
9107 | { | |
9108 | enum dwarf_macinfo_record_type next_type; | |
9109 | ||
9110 | /* GCC circa March 2002 doesn't produce the zero | |
9111 | type byte marking the end of the compilation | |
9112 | unit. Complain if it's not there, but exit no | |
9113 | matter what. */ | |
9114 | ||
9115 | /* Do we at least have room for a macinfo type byte? */ | |
9116 | if (mac_ptr >= mac_end) | |
9117 | { | |
4d3c2250 | 9118 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9119 | return; |
9120 | } | |
9121 | ||
9122 | /* We don't increment mac_ptr here, so this is just | |
9123 | a look-ahead. */ | |
9124 | next_type = read_1_byte (abfd, mac_ptr); | |
9125 | if (next_type != 0) | |
4d3c2250 KB |
9126 | complaint (&symfile_complaints, |
9127 | "no terminating 0-type entry for macros in `.debug_macinfo' section"); | |
2e276125 JB |
9128 | |
9129 | return; | |
9130 | } | |
9131 | } | |
9132 | break; | |
9133 | ||
9134 | case DW_MACINFO_vendor_ext: | |
9135 | { | |
9136 | int bytes_read; | |
9137 | int constant; | |
9138 | char *string; | |
9139 | ||
9140 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9141 | mac_ptr += bytes_read; | |
9142 | string = read_string (abfd, mac_ptr, &bytes_read); | |
9143 | mac_ptr += bytes_read; | |
9144 | ||
9145 | /* We don't recognize any vendor extensions. */ | |
9146 | } | |
9147 | break; | |
9148 | } | |
9149 | } | |
9150 | } | |
8e19ed76 PS |
9151 | |
9152 | /* Check if the attribute's form is a DW_FORM_block* | |
9153 | if so return true else false. */ | |
9154 | static int | |
9155 | attr_form_is_block (struct attribute *attr) | |
9156 | { | |
9157 | return (attr == NULL ? 0 : | |
9158 | attr->form == DW_FORM_block1 | |
9159 | || attr->form == DW_FORM_block2 | |
9160 | || attr->form == DW_FORM_block4 | |
9161 | || attr->form == DW_FORM_block); | |
9162 | } | |
4c2df51b DJ |
9163 | |
9164 | static void | |
9165 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 9166 | struct dwarf2_cu *cu) |
4c2df51b | 9167 | { |
0d53c4c4 | 9168 | if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) |
4c2df51b | 9169 | { |
0d53c4c4 | 9170 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 9171 | |
4a146b47 | 9172 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9173 | sizeof (struct dwarf2_loclist_baton)); |
e7c27a73 | 9174 | baton->objfile = cu->objfile; |
4c2df51b | 9175 | |
0d53c4c4 DJ |
9176 | /* We don't know how long the location list is, but make sure we |
9177 | don't run off the edge of the section. */ | |
6502dd73 DJ |
9178 | baton->size = dwarf2_per_objfile->loc_size - DW_UNSND (attr); |
9179 | baton->data = dwarf2_per_objfile->loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
9180 | baton->base_address = cu->header.base_address; |
9181 | if (cu->header.base_known == 0) | |
0d53c4c4 DJ |
9182 | complaint (&symfile_complaints, |
9183 | "Location list used without specifying the CU base address."); | |
4c2df51b | 9184 | |
a67af2b9 | 9185 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
9186 | SYMBOL_LOCATION_BATON (sym) = baton; |
9187 | } | |
9188 | else | |
9189 | { | |
9190 | struct dwarf2_locexpr_baton *baton; | |
9191 | ||
4a146b47 | 9192 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9193 | sizeof (struct dwarf2_locexpr_baton)); |
e7c27a73 | 9194 | baton->objfile = cu->objfile; |
0d53c4c4 DJ |
9195 | |
9196 | if (attr_form_is_block (attr)) | |
9197 | { | |
9198 | /* Note that we're just copying the block's data pointer | |
9199 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
9200 | info_buffer for SYM's objfile; right now we never release |
9201 | that buffer, but when we do clean up properly this may | |
9202 | need to change. */ | |
0d53c4c4 DJ |
9203 | baton->size = DW_BLOCK (attr)->size; |
9204 | baton->data = DW_BLOCK (attr)->data; | |
9205 | } | |
9206 | else | |
9207 | { | |
9208 | dwarf2_invalid_attrib_class_complaint ("location description", | |
9209 | SYMBOL_NATURAL_NAME (sym)); | |
9210 | baton->size = 0; | |
9211 | baton->data = NULL; | |
9212 | } | |
9213 | ||
a67af2b9 | 9214 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
9215 | SYMBOL_LOCATION_BATON (sym) = baton; |
9216 | } | |
4c2df51b | 9217 | } |
6502dd73 | 9218 | |
ae038cb0 | 9219 | /* Locate the compilation unit from CU's objfile which contains the |
10b3939b | 9220 | DIE at OFFSET. Raises an error on failure. */ |
ae038cb0 DJ |
9221 | |
9222 | static struct dwarf2_per_cu_data * | |
9223 | dwarf2_find_containing_comp_unit (unsigned long offset, | |
9224 | struct objfile *objfile) | |
9225 | { | |
9226 | struct dwarf2_per_cu_data *this_cu; | |
9227 | int low, high; | |
9228 | ||
ae038cb0 DJ |
9229 | low = 0; |
9230 | high = dwarf2_per_objfile->n_comp_units - 1; | |
9231 | while (high > low) | |
9232 | { | |
9233 | int mid = low + (high - low) / 2; | |
9234 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) | |
9235 | high = mid; | |
9236 | else | |
9237 | low = mid + 1; | |
9238 | } | |
9239 | gdb_assert (low == high); | |
9240 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
9241 | { | |
10b3939b DJ |
9242 | if (low == 0) |
9243 | error ("Dwarf Error: could not find partial DIE containing " | |
9244 | "offset 0x%lx [in module %s]", | |
9245 | (long) offset, bfd_get_filename (objfile->obfd)); | |
9246 | ||
ae038cb0 DJ |
9247 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
9248 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
9249 | } | |
9250 | else | |
9251 | { | |
9252 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
9253 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9254 | && offset >= this_cu->offset + this_cu->length) | |
9255 | error ("invalid dwarf2 offset %ld", offset); | |
9256 | gdb_assert (offset < this_cu->offset + this_cu->length); | |
9257 | return this_cu; | |
9258 | } | |
9259 | } | |
9260 | ||
10b3939b DJ |
9261 | /* Locate the compilation unit from OBJFILE which is located at exactly |
9262 | OFFSET. Raises an error on failure. */ | |
9263 | ||
ae038cb0 DJ |
9264 | static struct dwarf2_per_cu_data * |
9265 | dwarf2_find_comp_unit (unsigned long offset, struct objfile *objfile) | |
9266 | { | |
9267 | struct dwarf2_per_cu_data *this_cu; | |
9268 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
9269 | if (this_cu->offset != offset) | |
9270 | error ("no compilation unit with offset %ld\n", offset); | |
9271 | return this_cu; | |
9272 | } | |
9273 | ||
9274 | /* Release one cached compilation unit, CU. We unlink it from the tree | |
9275 | of compilation units, but we don't remove it from the read_in_chain; | |
9276 | the caller is responsible for that. */ | |
9277 | ||
9278 | static void | |
9279 | free_one_comp_unit (void *data) | |
9280 | { | |
9281 | struct dwarf2_cu *cu = data; | |
9282 | ||
9283 | if (cu->per_cu != NULL) | |
9284 | cu->per_cu->cu = NULL; | |
9285 | cu->per_cu = NULL; | |
9286 | ||
9287 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10b3939b DJ |
9288 | if (cu->dies) |
9289 | free_die_list (cu->dies); | |
ae038cb0 DJ |
9290 | |
9291 | xfree (cu); | |
9292 | } | |
9293 | ||
72bf9492 | 9294 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
9295 | when we're finished with it. We can't free the pointer itself, but be |
9296 | sure to unlink it from the cache. Also release any associated storage | |
9297 | and perform cache maintenance. | |
72bf9492 DJ |
9298 | |
9299 | Only used during partial symbol parsing. */ | |
9300 | ||
9301 | static void | |
9302 | free_stack_comp_unit (void *data) | |
9303 | { | |
9304 | struct dwarf2_cu *cu = data; | |
9305 | ||
9306 | obstack_free (&cu->comp_unit_obstack, NULL); | |
9307 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
9308 | |
9309 | if (cu->per_cu != NULL) | |
9310 | { | |
9311 | /* This compilation unit is on the stack in our caller, so we | |
9312 | should not xfree it. Just unlink it. */ | |
9313 | cu->per_cu->cu = NULL; | |
9314 | cu->per_cu = NULL; | |
9315 | ||
9316 | /* If we had a per-cu pointer, then we may have other compilation | |
9317 | units loaded, so age them now. */ | |
9318 | age_cached_comp_units (); | |
9319 | } | |
9320 | } | |
9321 | ||
9322 | /* Free all cached compilation units. */ | |
9323 | ||
9324 | static void | |
9325 | free_cached_comp_units (void *data) | |
9326 | { | |
9327 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9328 | ||
9329 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9330 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9331 | while (per_cu != NULL) | |
9332 | { | |
9333 | struct dwarf2_per_cu_data *next_cu; | |
9334 | ||
9335 | next_cu = per_cu->cu->read_in_chain; | |
9336 | ||
9337 | free_one_comp_unit (per_cu->cu); | |
9338 | *last_chain = next_cu; | |
9339 | ||
9340 | per_cu = next_cu; | |
9341 | } | |
9342 | } | |
9343 | ||
9344 | /* Increase the age counter on each cached compilation unit, and free | |
9345 | any that are too old. */ | |
9346 | ||
9347 | static void | |
9348 | age_cached_comp_units (void) | |
9349 | { | |
9350 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9351 | ||
9352 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
9353 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9354 | while (per_cu != NULL) | |
9355 | { | |
9356 | per_cu->cu->last_used ++; | |
9357 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
9358 | dwarf2_mark (per_cu->cu); | |
9359 | per_cu = per_cu->cu->read_in_chain; | |
9360 | } | |
9361 | ||
9362 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9363 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9364 | while (per_cu != NULL) | |
9365 | { | |
9366 | struct dwarf2_per_cu_data *next_cu; | |
9367 | ||
9368 | next_cu = per_cu->cu->read_in_chain; | |
9369 | ||
9370 | if (!per_cu->cu->mark) | |
9371 | { | |
9372 | free_one_comp_unit (per_cu->cu); | |
9373 | *last_chain = next_cu; | |
9374 | } | |
9375 | else | |
9376 | last_chain = &per_cu->cu->read_in_chain; | |
9377 | ||
9378 | per_cu = next_cu; | |
9379 | } | |
9380 | } | |
9381 | ||
9382 | /* Remove a single compilation unit from the cache. */ | |
9383 | ||
9384 | static void | |
9385 | free_one_cached_comp_unit (void *target_cu) | |
9386 | { | |
9387 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9388 | ||
9389 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9390 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9391 | while (per_cu != NULL) | |
9392 | { | |
9393 | struct dwarf2_per_cu_data *next_cu; | |
9394 | ||
9395 | next_cu = per_cu->cu->read_in_chain; | |
9396 | ||
9397 | if (per_cu->cu == target_cu) | |
9398 | { | |
9399 | free_one_comp_unit (per_cu->cu); | |
9400 | *last_chain = next_cu; | |
9401 | break; | |
9402 | } | |
9403 | else | |
9404 | last_chain = &per_cu->cu->read_in_chain; | |
9405 | ||
9406 | per_cu = next_cu; | |
9407 | } | |
9408 | } | |
9409 | ||
1c379e20 DJ |
9410 | /* A pair of DIE offset and GDB type pointer. We store these |
9411 | in a hash table separate from the DIEs, and preserve them | |
9412 | when the DIEs are flushed out of cache. */ | |
9413 | ||
9414 | struct dwarf2_offset_and_type | |
9415 | { | |
9416 | unsigned int offset; | |
9417 | struct type *type; | |
9418 | }; | |
9419 | ||
9420 | /* Hash function for a dwarf2_offset_and_type. */ | |
9421 | ||
9422 | static hashval_t | |
9423 | offset_and_type_hash (const void *item) | |
9424 | { | |
9425 | const struct dwarf2_offset_and_type *ofs = item; | |
9426 | return ofs->offset; | |
9427 | } | |
9428 | ||
9429 | /* Equality function for a dwarf2_offset_and_type. */ | |
9430 | ||
9431 | static int | |
9432 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
9433 | { | |
9434 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
9435 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9436 | return ofs_lhs->offset == ofs_rhs->offset; | |
9437 | } | |
9438 | ||
9439 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
9440 | table if necessary. */ | |
9441 | ||
9442 | static void | |
9443 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
9444 | { | |
9445 | struct dwarf2_offset_and_type **slot, ofs; | |
9446 | ||
9447 | die->type = type; | |
9448 | ||
9449 | if (cu->per_cu == NULL) | |
9450 | return; | |
9451 | ||
9452 | if (cu->per_cu->type_hash == NULL) | |
9453 | cu->per_cu->type_hash | |
9454 | = htab_create_alloc_ex (cu->header.length / 24, | |
9455 | offset_and_type_hash, | |
9456 | offset_and_type_eq, | |
9457 | NULL, | |
9458 | &cu->objfile->objfile_obstack, | |
9459 | hashtab_obstack_allocate, | |
9460 | dummy_obstack_deallocate); | |
9461 | ||
9462 | ofs.offset = die->offset; | |
9463 | ofs.type = type; | |
9464 | slot = (struct dwarf2_offset_and_type **) | |
9465 | htab_find_slot_with_hash (cu->per_cu->type_hash, &ofs, ofs.offset, INSERT); | |
9466 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); | |
9467 | **slot = ofs; | |
9468 | } | |
9469 | ||
1c379e20 DJ |
9470 | /* Find the type for DIE in TYPE_HASH, or return NULL if DIE does not |
9471 | have a saved type. */ | |
9472 | ||
9473 | static struct type * | |
9474 | get_die_type (struct die_info *die, htab_t type_hash) | |
9475 | { | |
9476 | struct dwarf2_offset_and_type *slot, ofs; | |
9477 | ||
9478 | ofs.offset = die->offset; | |
9479 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
9480 | if (slot) | |
9481 | return slot->type; | |
9482 | else | |
9483 | return NULL; | |
9484 | } | |
9485 | ||
9486 | /* Restore the types of the DIE tree starting at START_DIE from the hash | |
9487 | table saved in CU. */ | |
9488 | ||
9489 | static void | |
9490 | reset_die_and_siblings_types (struct die_info *start_die, struct dwarf2_cu *cu) | |
9491 | { | |
9492 | struct die_info *die; | |
9493 | ||
9494 | if (cu->per_cu->type_hash == NULL) | |
9495 | return; | |
9496 | ||
9497 | for (die = start_die; die != NULL; die = die->sibling) | |
9498 | { | |
9499 | die->type = get_die_type (die, cu->per_cu->type_hash); | |
9500 | if (die->child != NULL) | |
9501 | reset_die_and_siblings_types (die->child, cu); | |
9502 | } | |
9503 | } | |
9504 | ||
10b3939b DJ |
9505 | /* Set the mark field in CU and in every other compilation unit in the |
9506 | cache that we must keep because we are keeping CU. */ | |
9507 | ||
9508 | /* Add a dependence relationship from CU to REF_PER_CU. */ | |
9509 | ||
9510 | static void | |
9511 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
9512 | struct dwarf2_per_cu_data *ref_per_cu) | |
9513 | { | |
9514 | void **slot; | |
9515 | ||
9516 | if (cu->dependencies == NULL) | |
9517 | cu->dependencies | |
9518 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
9519 | NULL, &cu->comp_unit_obstack, | |
9520 | hashtab_obstack_allocate, | |
9521 | dummy_obstack_deallocate); | |
9522 | ||
9523 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
9524 | if (*slot == NULL) | |
9525 | *slot = ref_per_cu; | |
9526 | } | |
1c379e20 | 9527 | |
ae038cb0 DJ |
9528 | /* Set the mark field in CU and in every other compilation unit in the |
9529 | cache that we must keep because we are keeping CU. */ | |
9530 | ||
10b3939b DJ |
9531 | static int |
9532 | dwarf2_mark_helper (void **slot, void *data) | |
9533 | { | |
9534 | struct dwarf2_per_cu_data *per_cu; | |
9535 | ||
9536 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
9537 | if (per_cu->cu->mark) | |
9538 | return 1; | |
9539 | per_cu->cu->mark = 1; | |
9540 | ||
9541 | if (per_cu->cu->dependencies != NULL) | |
9542 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
9543 | ||
9544 | return 1; | |
9545 | } | |
9546 | ||
ae038cb0 DJ |
9547 | static void |
9548 | dwarf2_mark (struct dwarf2_cu *cu) | |
9549 | { | |
9550 | if (cu->mark) | |
9551 | return; | |
9552 | cu->mark = 1; | |
10b3939b DJ |
9553 | if (cu->dependencies != NULL) |
9554 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
9555 | } |
9556 | ||
9557 | static void | |
9558 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
9559 | { | |
9560 | while (per_cu) | |
9561 | { | |
9562 | per_cu->cu->mark = 0; | |
9563 | per_cu = per_cu->cu->read_in_chain; | |
9564 | } | |
72bf9492 DJ |
9565 | } |
9566 | ||
9567 | /* Allocation function for the libiberty hash table which uses an | |
9568 | obstack. */ | |
9569 | ||
9570 | static void * | |
9571 | hashtab_obstack_allocate (void *data, size_t size, size_t count) | |
9572 | { | |
9573 | unsigned int total = size * count; | |
9574 | void *ptr = obstack_alloc ((struct obstack *) data, total); | |
9575 | memset (ptr, 0, total); | |
9576 | return ptr; | |
9577 | } | |
9578 | ||
9579 | /* Trivial deallocation function for the libiberty splay tree and hash | |
9580 | table - don't deallocate anything. Rely on later deletion of the | |
9581 | obstack. */ | |
9582 | ||
9583 | static void | |
9584 | dummy_obstack_deallocate (void *object, void *data) | |
9585 | { | |
9586 | return; | |
9587 | } | |
9588 | ||
9589 | /* Trivial hash function for partial_die_info: the hash value of a DIE | |
9590 | is its offset in .debug_info for this objfile. */ | |
9591 | ||
9592 | static hashval_t | |
9593 | partial_die_hash (const void *item) | |
9594 | { | |
9595 | const struct partial_die_info *part_die = item; | |
9596 | return part_die->offset; | |
9597 | } | |
9598 | ||
9599 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
9600 | are equal if they have the same offset. */ | |
9601 | ||
9602 | static int | |
9603 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
9604 | { | |
9605 | const struct partial_die_info *part_die_lhs = item_lhs; | |
9606 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9607 | return part_die_lhs->offset == part_die_rhs->offset; | |
9608 | } | |
9609 | ||
ae038cb0 DJ |
9610 | static struct cmd_list_element *set_dwarf2_cmdlist; |
9611 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
9612 | ||
9613 | static void | |
9614 | set_dwarf2_cmd (char *args, int from_tty) | |
9615 | { | |
9616 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
9617 | } | |
9618 | ||
9619 | static void | |
9620 | show_dwarf2_cmd (char *args, int from_tty) | |
9621 | { | |
9622 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
9623 | } | |
9624 | ||
6502dd73 DJ |
9625 | void _initialize_dwarf2_read (void); |
9626 | ||
9627 | void | |
9628 | _initialize_dwarf2_read (void) | |
9629 | { | |
9630 | dwarf2_objfile_data_key = register_objfile_data (); | |
ae038cb0 DJ |
9631 | |
9632 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, | |
9633 | "Set DWARF 2 specific variables.\n" | |
9634 | "Configure DWARF 2 variables such as the cache size", | |
9635 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", | |
9636 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
9637 | ||
9638 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, | |
9639 | "Show DWARF 2 specific variables\n" | |
9640 | "Show DWARF 2 variables such as the cache size", | |
9641 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", | |
9642 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
9643 | ||
9644 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
9645 | &dwarf2_max_cache_age, | |
9646 | "Set the upper bound on the age of cached " | |
9647 | "dwarf2 compilation units.", | |
9648 | "Show the upper bound on the age of cached " | |
9649 | "dwarf2 compilation units.", | |
9650 | "A higher limit means that cached " | |
9651 | "compilation units will be stored\n" | |
9652 | "in memory longer, and more total memory will " | |
9653 | "be used. Zero disables\n" | |
9654 | "caching, which can slow down startup.", | |
9655 | "The upper bound on the age of cached " | |
9656 | "dwarf2 compilation units is %d.", | |
9657 | NULL, NULL, &set_dwarf2_cmdlist, | |
9658 | &show_dwarf2_cmdlist); | |
6502dd73 | 9659 | } |