Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
b44e9041 EZ |
2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
3 | 2004 | |
8e65ff28 | 4 | Free Software Foundation, Inc. |
c906108c SS |
5 | |
6 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
7 | Inc. with support from Florida State University (under contract | |
8 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
9 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
10 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
11 | support in dwarfread.c | |
12 | ||
c5aa993b | 13 | This file is part of GDB. |
c906108c | 14 | |
c5aa993b JM |
15 | This program is free software; you can redistribute it and/or modify |
16 | it under the terms of the GNU General Public License as published by | |
17 | the Free Software Foundation; either version 2 of the License, or (at | |
18 | your option) any later version. | |
c906108c | 19 | |
c5aa993b JM |
20 | This program is distributed in the hope that it will be useful, but |
21 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
23 | General Public License for more details. | |
c906108c | 24 | |
c5aa993b JM |
25 | You should have received a copy of the GNU General Public License |
26 | along with this program; if not, write to the Free Software | |
27 | Foundation, Inc., 59 Temple Place - Suite 330, | |
28 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
29 | |
30 | #include "defs.h" | |
31 | #include "bfd.h" | |
c906108c SS |
32 | #include "symtab.h" |
33 | #include "gdbtypes.h" | |
c906108c SS |
34 | #include "objfiles.h" |
35 | #include "elf/dwarf2.h" | |
36 | #include "buildsym.h" | |
37 | #include "demangle.h" | |
38 | #include "expression.h" | |
d5166ae1 | 39 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 40 | #include "macrotab.h" |
c906108c SS |
41 | #include "language.h" |
42 | #include "complaints.h" | |
357e46e7 | 43 | #include "bcache.h" |
4c2df51b DJ |
44 | #include "dwarf2expr.h" |
45 | #include "dwarf2loc.h" | |
9219021c | 46 | #include "cp-support.h" |
72bf9492 | 47 | #include "hashtab.h" |
ae038cb0 DJ |
48 | #include "command.h" |
49 | #include "gdbcmd.h" | |
4c2df51b | 50 | |
c906108c SS |
51 | #include <fcntl.h> |
52 | #include "gdb_string.h" | |
4bdf3d34 | 53 | #include "gdb_assert.h" |
c906108c SS |
54 | #include <sys/types.h> |
55 | ||
d8151005 DJ |
56 | /* A note on memory usage for this file. |
57 | ||
58 | At the present time, this code reads the debug info sections into | |
59 | the objfile's objfile_obstack. A definite improvement for startup | |
60 | time, on platforms which do not emit relocations for debug | |
61 | sections, would be to use mmap instead. The object's complete | |
62 | debug information is loaded into memory, partly to simplify | |
63 | absolute DIE references. | |
64 | ||
65 | Whether using obstacks or mmap, the sections should remain loaded | |
66 | until the objfile is released, and pointers into the section data | |
67 | can be used for any other data associated to the objfile (symbol | |
68 | names, type names, location expressions to name a few). */ | |
69 | ||
88496bb5 MS |
70 | #ifndef DWARF2_REG_TO_REGNUM |
71 | #define DWARF2_REG_TO_REGNUM(REG) (REG) | |
72 | #endif | |
73 | ||
107d2387 | 74 | #if 0 |
357e46e7 | 75 | /* .debug_info header for a compilation unit |
c906108c SS |
76 | Because of alignment constraints, this structure has padding and cannot |
77 | be mapped directly onto the beginning of the .debug_info section. */ | |
78 | typedef struct comp_unit_header | |
79 | { | |
80 | unsigned int length; /* length of the .debug_info | |
81 | contribution */ | |
82 | unsigned short version; /* version number -- 2 for DWARF | |
83 | version 2 */ | |
84 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
85 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
86 | } | |
87 | _COMP_UNIT_HEADER; | |
88 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 89 | #endif |
c906108c SS |
90 | |
91 | /* .debug_pubnames header | |
92 | Because of alignment constraints, this structure has padding and cannot | |
93 | be mapped directly onto the beginning of the .debug_info section. */ | |
94 | typedef struct pubnames_header | |
95 | { | |
96 | unsigned int length; /* length of the .debug_pubnames | |
97 | contribution */ | |
98 | unsigned char version; /* version number -- 2 for DWARF | |
99 | version 2 */ | |
100 | unsigned int info_offset; /* offset into .debug_info section */ | |
101 | unsigned int info_size; /* byte size of .debug_info section | |
102 | portion */ | |
103 | } | |
104 | _PUBNAMES_HEADER; | |
105 | #define _ACTUAL_PUBNAMES_HEADER_SIZE 13 | |
106 | ||
107 | /* .debug_pubnames header | |
108 | Because of alignment constraints, this structure has padding and cannot | |
109 | be mapped directly onto the beginning of the .debug_info section. */ | |
110 | typedef struct aranges_header | |
111 | { | |
112 | unsigned int length; /* byte len of the .debug_aranges | |
113 | contribution */ | |
114 | unsigned short version; /* version number -- 2 for DWARF | |
115 | version 2 */ | |
116 | unsigned int info_offset; /* offset into .debug_info section */ | |
117 | unsigned char addr_size; /* byte size of an address */ | |
118 | unsigned char seg_size; /* byte size of segment descriptor */ | |
119 | } | |
120 | _ARANGES_HEADER; | |
121 | #define _ACTUAL_ARANGES_HEADER_SIZE 12 | |
122 | ||
123 | /* .debug_line statement program prologue | |
124 | Because of alignment constraints, this structure has padding and cannot | |
125 | be mapped directly onto the beginning of the .debug_info section. */ | |
126 | typedef struct statement_prologue | |
127 | { | |
128 | unsigned int total_length; /* byte length of the statement | |
129 | information */ | |
130 | unsigned short version; /* version number -- 2 for DWARF | |
131 | version 2 */ | |
132 | unsigned int prologue_length; /* # bytes between prologue & | |
133 | stmt program */ | |
134 | unsigned char minimum_instruction_length; /* byte size of | |
135 | smallest instr */ | |
136 | unsigned char default_is_stmt; /* initial value of is_stmt | |
137 | register */ | |
138 | char line_base; | |
139 | unsigned char line_range; | |
140 | unsigned char opcode_base; /* number assigned to first special | |
141 | opcode */ | |
142 | unsigned char *standard_opcode_lengths; | |
143 | } | |
144 | _STATEMENT_PROLOGUE; | |
145 | ||
6502dd73 DJ |
146 | static const struct objfile_data *dwarf2_objfile_data_key; |
147 | ||
148 | struct dwarf2_per_objfile | |
149 | { | |
150 | /* Sizes of debugging sections. */ | |
151 | unsigned int info_size; | |
152 | unsigned int abbrev_size; | |
153 | unsigned int line_size; | |
154 | unsigned int pubnames_size; | |
155 | unsigned int aranges_size; | |
156 | unsigned int loc_size; | |
157 | unsigned int macinfo_size; | |
158 | unsigned int str_size; | |
159 | unsigned int ranges_size; | |
160 | unsigned int frame_size; | |
161 | unsigned int eh_frame_size; | |
162 | ||
163 | /* Loaded data from the sections. */ | |
164 | char *info_buffer; | |
165 | char *abbrev_buffer; | |
166 | char *line_buffer; | |
167 | char *str_buffer; | |
168 | char *macinfo_buffer; | |
169 | char *ranges_buffer; | |
170 | char *loc_buffer; | |
ae038cb0 | 171 | |
10b3939b DJ |
172 | /* A list of all the compilation units. This is used to locate |
173 | the target compilation unit of a particular reference. */ | |
ae038cb0 DJ |
174 | struct dwarf2_per_cu_data **all_comp_units; |
175 | ||
176 | /* The number of compilation units in ALL_COMP_UNITS. */ | |
177 | int n_comp_units; | |
178 | ||
179 | /* A chain of compilation units that are currently read in, so that | |
180 | they can be freed later. */ | |
181 | struct dwarf2_per_cu_data *read_in_chain; | |
6502dd73 DJ |
182 | }; |
183 | ||
184 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 185 | |
086df311 DJ |
186 | static asection *dwarf_info_section; |
187 | static asection *dwarf_abbrev_section; | |
188 | static asection *dwarf_line_section; | |
189 | static asection *dwarf_pubnames_section; | |
190 | static asection *dwarf_aranges_section; | |
191 | static asection *dwarf_loc_section; | |
192 | static asection *dwarf_macinfo_section; | |
193 | static asection *dwarf_str_section; | |
194 | static asection *dwarf_ranges_section; | |
195 | asection *dwarf_frame_section; | |
196 | asection *dwarf_eh_frame_section; | |
197 | ||
c906108c SS |
198 | /* names of the debugging sections */ |
199 | ||
200 | #define INFO_SECTION ".debug_info" | |
201 | #define ABBREV_SECTION ".debug_abbrev" | |
202 | #define LINE_SECTION ".debug_line" | |
203 | #define PUBNAMES_SECTION ".debug_pubnames" | |
204 | #define ARANGES_SECTION ".debug_aranges" | |
205 | #define LOC_SECTION ".debug_loc" | |
206 | #define MACINFO_SECTION ".debug_macinfo" | |
207 | #define STR_SECTION ".debug_str" | |
af34e669 | 208 | #define RANGES_SECTION ".debug_ranges" |
b6af0555 JS |
209 | #define FRAME_SECTION ".debug_frame" |
210 | #define EH_FRAME_SECTION ".eh_frame" | |
c906108c SS |
211 | |
212 | /* local data types */ | |
213 | ||
57349743 JB |
214 | /* We hold several abbreviation tables in memory at the same time. */ |
215 | #ifndef ABBREV_HASH_SIZE | |
216 | #define ABBREV_HASH_SIZE 121 | |
217 | #endif | |
218 | ||
107d2387 AC |
219 | /* The data in a compilation unit header, after target2host |
220 | translation, looks like this. */ | |
c906108c | 221 | struct comp_unit_head |
a738430d MK |
222 | { |
223 | unsigned long length; | |
224 | short version; | |
225 | unsigned int abbrev_offset; | |
226 | unsigned char addr_size; | |
227 | unsigned char signed_addr_p; | |
57349743 | 228 | |
a738430d MK |
229 | /* Size of file offsets; either 4 or 8. */ |
230 | unsigned int offset_size; | |
57349743 | 231 | |
a738430d MK |
232 | /* Size of the length field; either 4 or 12. */ |
233 | unsigned int initial_length_size; | |
57349743 | 234 | |
a738430d MK |
235 | /* Offset to the first byte of this compilation unit header in the |
236 | .debug_info section, for resolving relative reference dies. */ | |
237 | unsigned int offset; | |
57349743 | 238 | |
a738430d MK |
239 | /* Pointer to this compilation unit header in the .debug_info |
240 | section. */ | |
241 | char *cu_head_ptr; | |
57349743 | 242 | |
a738430d MK |
243 | /* Pointer to the first die of this compilation unit. This will be |
244 | the first byte following the compilation unit header. */ | |
245 | char *first_die_ptr; | |
af34e669 | 246 | |
a738430d MK |
247 | /* Pointer to the next compilation unit header in the program. */ |
248 | struct comp_unit_head *next; | |
0d53c4c4 | 249 | |
a738430d MK |
250 | /* Base address of this compilation unit. */ |
251 | CORE_ADDR base_address; | |
0d53c4c4 | 252 | |
a738430d MK |
253 | /* Non-zero if base_address has been set. */ |
254 | int base_known; | |
255 | }; | |
c906108c | 256 | |
10b3939b DJ |
257 | /* Fixed size for the DIE hash table. */ |
258 | #ifndef REF_HASH_SIZE | |
259 | #define REF_HASH_SIZE 1021 | |
260 | #endif | |
261 | ||
e7c27a73 DJ |
262 | /* Internal state when decoding a particular compilation unit. */ |
263 | struct dwarf2_cu | |
264 | { | |
265 | /* The objfile containing this compilation unit. */ | |
266 | struct objfile *objfile; | |
267 | ||
268 | /* The header of the compilation unit. | |
269 | ||
270 | FIXME drow/2003-11-10: Some of the things from the comp_unit_head | |
f3dd6933 | 271 | should logically be moved to the dwarf2_cu structure. */ |
e7c27a73 | 272 | struct comp_unit_head header; |
e142c38c DJ |
273 | |
274 | struct function_range *first_fn, *last_fn, *cached_fn; | |
275 | ||
276 | /* The language we are debugging. */ | |
277 | enum language language; | |
278 | const struct language_defn *language_defn; | |
279 | ||
b0f35d58 DL |
280 | const char *producer; |
281 | ||
e142c38c DJ |
282 | /* The generic symbol table building routines have separate lists for |
283 | file scope symbols and all all other scopes (local scopes). So | |
284 | we need to select the right one to pass to add_symbol_to_list(). | |
285 | We do it by keeping a pointer to the correct list in list_in_scope. | |
286 | ||
287 | FIXME: The original dwarf code just treated the file scope as the | |
288 | first local scope, and all other local scopes as nested local | |
289 | scopes, and worked fine. Check to see if we really need to | |
290 | distinguish these in buildsym.c. */ | |
291 | struct pending **list_in_scope; | |
292 | ||
293 | /* Maintain an array of referenced fundamental types for the current | |
294 | compilation unit being read. For DWARF version 1, we have to construct | |
295 | the fundamental types on the fly, since no information about the | |
296 | fundamental types is supplied. Each such fundamental type is created by | |
297 | calling a language dependent routine to create the type, and then a | |
298 | pointer to that type is then placed in the array at the index specified | |
299 | by it's FT_<TYPENAME> value. The array has a fixed size set by the | |
300 | FT_NUM_MEMBERS compile time constant, which is the number of predefined | |
301 | fundamental types gdb knows how to construct. */ | |
302 | struct type *ftypes[FT_NUM_MEMBERS]; /* Fundamental types */ | |
f3dd6933 DJ |
303 | |
304 | /* DWARF abbreviation table associated with this compilation unit. */ | |
305 | struct abbrev_info **dwarf2_abbrevs; | |
306 | ||
307 | /* Storage for the abbrev table. */ | |
308 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
309 | |
310 | /* Hash table holding all the loaded partial DIEs. */ | |
311 | htab_t partial_dies; | |
312 | ||
313 | /* Storage for things with the same lifetime as this read-in compilation | |
314 | unit, including partial DIEs. */ | |
315 | struct obstack comp_unit_obstack; | |
316 | ||
ae038cb0 DJ |
317 | /* When multiple dwarf2_cu structures are living in memory, this field |
318 | chains them all together, so that they can be released efficiently. | |
319 | We will probably also want a generation counter so that most-recently-used | |
320 | compilation units are cached... */ | |
321 | struct dwarf2_per_cu_data *read_in_chain; | |
322 | ||
323 | /* Backchain to our per_cu entry if the tree has been built. */ | |
324 | struct dwarf2_per_cu_data *per_cu; | |
325 | ||
326 | /* How many compilation units ago was this CU last referenced? */ | |
327 | int last_used; | |
328 | ||
10b3939b DJ |
329 | /* A hash table of die offsets for following references. */ |
330 | struct die_info *die_ref_table[REF_HASH_SIZE]; | |
331 | ||
332 | /* Full DIEs if read in. */ | |
333 | struct die_info *dies; | |
334 | ||
335 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
336 | units referenced by this one. Only set during full symbol processing; | |
337 | partial symbol tables do not have dependencies. */ | |
338 | htab_t dependencies; | |
339 | ||
ae038cb0 DJ |
340 | /* Mark used when releasing cached dies. */ |
341 | unsigned int mark : 1; | |
342 | ||
343 | /* This flag will be set if this compilation unit might include | |
344 | inter-compilation-unit references. */ | |
345 | unsigned int has_form_ref_addr : 1; | |
346 | ||
72bf9492 DJ |
347 | /* This flag will be set if this compilation unit includes any |
348 | DW_TAG_namespace DIEs. If we know that there are explicit | |
349 | DIEs for namespaces, we don't need to try to infer them | |
350 | from mangled names. */ | |
351 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
352 | }; |
353 | ||
10b3939b DJ |
354 | /* Persistent data held for a compilation unit, even when not |
355 | processing it. We put a pointer to this structure in the | |
356 | read_symtab_private field of the psymtab. If we encounter | |
357 | inter-compilation-unit references, we also maintain a sorted | |
358 | list of all compilation units. */ | |
359 | ||
ae038cb0 DJ |
360 | struct dwarf2_per_cu_data |
361 | { | |
362 | /* The start offset and length of this compilation unit. 2**31-1 | |
363 | bytes should suffice to store the length of any compilation unit | |
364 | - if it doesn't, GDB will fall over anyway. */ | |
365 | unsigned long offset; | |
366 | unsigned long length : 31; | |
367 | ||
368 | /* Flag indicating this compilation unit will be read in before | |
369 | any of the current compilation units are processed. */ | |
370 | unsigned long queued : 1; | |
371 | ||
372 | /* Set iff currently read in. */ | |
373 | struct dwarf2_cu *cu; | |
1c379e20 DJ |
374 | |
375 | /* If full symbols for this CU have been read in, then this field | |
376 | holds a map of DIE offsets to types. It isn't always possible | |
377 | to reconstruct this information later, so we have to preserve | |
378 | it. */ | |
1c379e20 | 379 | htab_t type_hash; |
10b3939b DJ |
380 | |
381 | /* The partial symbol table associated with this compilation unit. */ | |
382 | struct partial_symtab *psymtab; | |
ae038cb0 DJ |
383 | }; |
384 | ||
debd256d JB |
385 | /* The line number information for a compilation unit (found in the |
386 | .debug_line section) begins with a "statement program header", | |
387 | which contains the following information. */ | |
388 | struct line_header | |
389 | { | |
390 | unsigned int total_length; | |
391 | unsigned short version; | |
392 | unsigned int header_length; | |
393 | unsigned char minimum_instruction_length; | |
394 | unsigned char default_is_stmt; | |
395 | int line_base; | |
396 | unsigned char line_range; | |
397 | unsigned char opcode_base; | |
398 | ||
399 | /* standard_opcode_lengths[i] is the number of operands for the | |
400 | standard opcode whose value is i. This means that | |
401 | standard_opcode_lengths[0] is unused, and the last meaningful | |
402 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
403 | unsigned char *standard_opcode_lengths; | |
404 | ||
405 | /* The include_directories table. NOTE! These strings are not | |
406 | allocated with xmalloc; instead, they are pointers into | |
407 | debug_line_buffer. If you try to free them, `free' will get | |
408 | indigestion. */ | |
409 | unsigned int num_include_dirs, include_dirs_size; | |
410 | char **include_dirs; | |
411 | ||
412 | /* The file_names table. NOTE! These strings are not allocated | |
413 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
414 | Don't try to free them directly. */ | |
415 | unsigned int num_file_names, file_names_size; | |
416 | struct file_entry | |
c906108c | 417 | { |
debd256d JB |
418 | char *name; |
419 | unsigned int dir_index; | |
420 | unsigned int mod_time; | |
421 | unsigned int length; | |
aaa75496 | 422 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
debd256d JB |
423 | } *file_names; |
424 | ||
425 | /* The start and end of the statement program following this | |
6502dd73 | 426 | header. These point into dwarf2_per_objfile->line_buffer. */ |
debd256d JB |
427 | char *statement_program_start, *statement_program_end; |
428 | }; | |
c906108c SS |
429 | |
430 | /* When we construct a partial symbol table entry we only | |
431 | need this much information. */ | |
432 | struct partial_die_info | |
433 | { | |
72bf9492 | 434 | /* Offset of this DIE. */ |
c906108c | 435 | unsigned int offset; |
72bf9492 DJ |
436 | |
437 | /* DWARF-2 tag for this DIE. */ | |
438 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
439 | ||
440 | /* Language code associated with this DIE. This is only used | |
441 | for the compilation unit DIE. */ | |
442 | unsigned int language : 8; | |
443 | ||
444 | /* Assorted flags describing the data found in this DIE. */ | |
445 | unsigned int has_children : 1; | |
446 | unsigned int is_external : 1; | |
447 | unsigned int is_declaration : 1; | |
448 | unsigned int has_type : 1; | |
449 | unsigned int has_specification : 1; | |
aaa75496 | 450 | unsigned int has_stmt_list : 1; |
72bf9492 DJ |
451 | unsigned int has_pc_info : 1; |
452 | ||
453 | /* Flag set if the SCOPE field of this structure has been | |
454 | computed. */ | |
455 | unsigned int scope_set : 1; | |
456 | ||
457 | /* The name of this DIE. Normally the value of DW_AT_name, but | |
458 | sometimes DW_TAG_MIPS_linkage_name or a string computed in some | |
459 | other fashion. */ | |
c906108c | 460 | char *name; |
57c22c6c | 461 | char *dirname; |
72bf9492 DJ |
462 | |
463 | /* The scope to prepend to our children. This is generally | |
464 | allocated on the comp_unit_obstack, so will disappear | |
465 | when this compilation unit leaves the cache. */ | |
466 | char *scope; | |
467 | ||
468 | /* The location description associated with this DIE, if any. */ | |
469 | struct dwarf_block *locdesc; | |
470 | ||
471 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
472 | CORE_ADDR lowpc; |
473 | CORE_ADDR highpc; | |
72bf9492 DJ |
474 | |
475 | /* Pointer into the info_buffer pointing at the target of | |
476 | DW_AT_sibling, if any. */ | |
c906108c | 477 | char *sibling; |
72bf9492 DJ |
478 | |
479 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
480 | DW_AT_specification (or DW_AT_abstract_origin or | |
481 | DW_AT_extension). */ | |
482 | unsigned int spec_offset; | |
483 | ||
aaa75496 JB |
484 | /* If HAS_STMT_LIST, the offset of the Line Number Information data. */ |
485 | unsigned int line_offset; | |
486 | ||
72bf9492 DJ |
487 | /* Pointers to this DIE's parent, first child, and next sibling, |
488 | if any. */ | |
489 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
490 | }; |
491 | ||
492 | /* This data structure holds the information of an abbrev. */ | |
493 | struct abbrev_info | |
494 | { | |
495 | unsigned int number; /* number identifying abbrev */ | |
496 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
497 | unsigned short has_children; /* boolean */ |
498 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
499 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
500 | struct abbrev_info *next; /* next in chain */ | |
501 | }; | |
502 | ||
503 | struct attr_abbrev | |
504 | { | |
505 | enum dwarf_attribute name; | |
506 | enum dwarf_form form; | |
507 | }; | |
508 | ||
509 | /* This data structure holds a complete die structure. */ | |
510 | struct die_info | |
511 | { | |
c5aa993b | 512 | enum dwarf_tag tag; /* Tag indicating type of die */ |
c5aa993b JM |
513 | unsigned int abbrev; /* Abbrev number */ |
514 | unsigned int offset; /* Offset in .debug_info section */ | |
515 | unsigned int num_attrs; /* Number of attributes */ | |
516 | struct attribute *attrs; /* An array of attributes */ | |
517 | struct die_info *next_ref; /* Next die in ref hash table */ | |
78ba4af6 JB |
518 | |
519 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
520 | points to this die's parent; CHILD points to the first child of | |
521 | this node; and all the children of a given node are chained | |
522 | together via their SIBLING fields, terminated by a die whose | |
523 | tag is zero. */ | |
639d11d3 DC |
524 | struct die_info *child; /* Its first child, if any. */ |
525 | struct die_info *sibling; /* Its next sibling, if any. */ | |
526 | struct die_info *parent; /* Its parent, if any. */ | |
78ba4af6 | 527 | |
c5aa993b | 528 | struct type *type; /* Cached type information */ |
c906108c SS |
529 | }; |
530 | ||
531 | /* Attributes have a name and a value */ | |
532 | struct attribute | |
533 | { | |
534 | enum dwarf_attribute name; | |
535 | enum dwarf_form form; | |
536 | union | |
537 | { | |
538 | char *str; | |
539 | struct dwarf_block *blk; | |
ce5d95e1 JB |
540 | unsigned long unsnd; |
541 | long int snd; | |
c906108c SS |
542 | CORE_ADDR addr; |
543 | } | |
544 | u; | |
545 | }; | |
546 | ||
5fb290d7 DJ |
547 | struct function_range |
548 | { | |
549 | const char *name; | |
550 | CORE_ADDR lowpc, highpc; | |
551 | int seen_line; | |
552 | struct function_range *next; | |
553 | }; | |
554 | ||
c906108c SS |
555 | /* Get at parts of an attribute structure */ |
556 | ||
557 | #define DW_STRING(attr) ((attr)->u.str) | |
558 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
559 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
560 | #define DW_SND(attr) ((attr)->u.snd) | |
561 | #define DW_ADDR(attr) ((attr)->u.addr) | |
562 | ||
563 | /* Blocks are a bunch of untyped bytes. */ | |
564 | struct dwarf_block | |
565 | { | |
566 | unsigned int size; | |
567 | char *data; | |
568 | }; | |
569 | ||
c906108c SS |
570 | #ifndef ATTR_ALLOC_CHUNK |
571 | #define ATTR_ALLOC_CHUNK 4 | |
572 | #endif | |
573 | ||
c906108c SS |
574 | /* Allocate fields for structs, unions and enums in this size. */ |
575 | #ifndef DW_FIELD_ALLOC_CHUNK | |
576 | #define DW_FIELD_ALLOC_CHUNK 4 | |
577 | #endif | |
578 | ||
c906108c SS |
579 | /* A zeroed version of a partial die for initialization purposes. */ |
580 | static struct partial_die_info zeroed_partial_die; | |
581 | ||
7a292a7a SS |
582 | /* FIXME: decode_locdesc sets these variables to describe the location |
583 | to the caller. These ought to be a structure or something. If | |
584 | none of the flags are set, the object lives at the address returned | |
585 | by decode_locdesc. */ | |
586 | ||
7a292a7a SS |
587 | static int isreg; /* Object lives in register. |
588 | decode_locdesc's return value is | |
589 | the register number. */ | |
c906108c | 590 | |
c906108c SS |
591 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
592 | but this would require a corresponding change in unpack_field_as_long | |
593 | and friends. */ | |
594 | static int bits_per_byte = 8; | |
595 | ||
596 | /* The routines that read and process dies for a C struct or C++ class | |
597 | pass lists of data member fields and lists of member function fields | |
598 | in an instance of a field_info structure, as defined below. */ | |
599 | struct field_info | |
c5aa993b JM |
600 | { |
601 | /* List of data member and baseclasses fields. */ | |
602 | struct nextfield | |
603 | { | |
604 | struct nextfield *next; | |
605 | int accessibility; | |
606 | int virtuality; | |
607 | struct field field; | |
608 | } | |
609 | *fields; | |
c906108c | 610 | |
c5aa993b JM |
611 | /* Number of fields. */ |
612 | int nfields; | |
c906108c | 613 | |
c5aa993b JM |
614 | /* Number of baseclasses. */ |
615 | int nbaseclasses; | |
c906108c | 616 | |
c5aa993b JM |
617 | /* Set if the accesibility of one of the fields is not public. */ |
618 | int non_public_fields; | |
c906108c | 619 | |
c5aa993b JM |
620 | /* Member function fields array, entries are allocated in the order they |
621 | are encountered in the object file. */ | |
622 | struct nextfnfield | |
623 | { | |
624 | struct nextfnfield *next; | |
625 | struct fn_field fnfield; | |
626 | } | |
627 | *fnfields; | |
c906108c | 628 | |
c5aa993b JM |
629 | /* Member function fieldlist array, contains name of possibly overloaded |
630 | member function, number of overloaded member functions and a pointer | |
631 | to the head of the member function field chain. */ | |
632 | struct fnfieldlist | |
633 | { | |
634 | char *name; | |
635 | int length; | |
636 | struct nextfnfield *head; | |
637 | } | |
638 | *fnfieldlists; | |
c906108c | 639 | |
c5aa993b JM |
640 | /* Number of entries in the fnfieldlists array. */ |
641 | int nfnfields; | |
642 | }; | |
c906108c | 643 | |
10b3939b DJ |
644 | /* One item on the queue of compilation units to read in full symbols |
645 | for. */ | |
646 | struct dwarf2_queue_item | |
647 | { | |
648 | struct dwarf2_per_cu_data *per_cu; | |
649 | struct dwarf2_queue_item *next; | |
650 | }; | |
651 | ||
652 | /* The current queue. */ | |
653 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
654 | ||
ae038cb0 DJ |
655 | /* Loaded secondary compilation units are kept in memory until they |
656 | have not been referenced for the processing of this many | |
657 | compilation units. Set this to zero to disable caching. Cache | |
658 | sizes of up to at least twenty will improve startup time for | |
659 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
660 | static int dwarf2_max_cache_age = 5; | |
661 | ||
c906108c SS |
662 | /* Various complaints about symbol reading that don't abort the process */ |
663 | ||
4d3c2250 KB |
664 | static void |
665 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 666 | { |
4d3c2250 KB |
667 | complaint (&symfile_complaints, |
668 | "statement list doesn't fit in .debug_line section"); | |
669 | } | |
670 | ||
671 | static void | |
672 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 673 | { |
4d3c2250 KB |
674 | complaint (&symfile_complaints, "location expression too complex"); |
675 | } | |
676 | ||
4d3c2250 KB |
677 | static void |
678 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
679 | int arg3) | |
2e276125 | 680 | { |
4d3c2250 KB |
681 | complaint (&symfile_complaints, |
682 | "const value length mismatch for '%s', got %d, expected %d", arg1, | |
683 | arg2, arg3); | |
684 | } | |
685 | ||
686 | static void | |
687 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 688 | { |
4d3c2250 KB |
689 | complaint (&symfile_complaints, |
690 | "macro info runs off end of `.debug_macinfo' section"); | |
691 | } | |
692 | ||
693 | static void | |
694 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 695 | { |
4d3c2250 KB |
696 | complaint (&symfile_complaints, |
697 | "macro debug info contains a malformed macro definition:\n`%s'", | |
698 | arg1); | |
699 | } | |
700 | ||
701 | static void | |
702 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 703 | { |
4d3c2250 KB |
704 | complaint (&symfile_complaints, |
705 | "invalid attribute class or form for '%s' in '%s'", arg1, arg2); | |
706 | } | |
c906108c | 707 | |
c906108c SS |
708 | /* local function prototypes */ |
709 | ||
4efb68b1 | 710 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
711 | |
712 | #if 0 | |
a14ed312 | 713 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
714 | #endif |
715 | ||
aaa75496 JB |
716 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
717 | struct objfile *); | |
718 | ||
719 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
720 | struct partial_die_info *, | |
721 | struct partial_symtab *); | |
722 | ||
a14ed312 | 723 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 724 | |
72bf9492 DJ |
725 | static void scan_partial_symbols (struct partial_die_info *, |
726 | CORE_ADDR *, CORE_ADDR *, | |
727 | struct dwarf2_cu *); | |
c906108c | 728 | |
72bf9492 DJ |
729 | static void add_partial_symbol (struct partial_die_info *, |
730 | struct dwarf2_cu *); | |
63d06c5c | 731 | |
72bf9492 | 732 | static int pdi_needs_namespace (enum dwarf_tag tag); |
91c24f0a | 733 | |
72bf9492 DJ |
734 | static void add_partial_namespace (struct partial_die_info *pdi, |
735 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
736 | struct dwarf2_cu *cu); | |
63d06c5c | 737 | |
72bf9492 DJ |
738 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
739 | struct dwarf2_cu *cu); | |
91c24f0a DC |
740 | |
741 | static char *locate_pdi_sibling (struct partial_die_info *orig_pdi, | |
742 | char *info_ptr, | |
743 | bfd *abfd, | |
e7c27a73 | 744 | struct dwarf2_cu *cu); |
91c24f0a | 745 | |
a14ed312 | 746 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 747 | |
a14ed312 | 748 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 749 | |
188dd5d6 | 750 | char *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 751 | |
e7c27a73 | 752 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 753 | |
f3dd6933 | 754 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 755 | |
72bf9492 DJ |
756 | static struct abbrev_info *peek_die_abbrev (char *, int *, struct dwarf2_cu *); |
757 | ||
57349743 | 758 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 759 | struct dwarf2_cu *); |
c906108c | 760 | |
72bf9492 DJ |
761 | static struct partial_die_info *load_partial_dies (bfd *, char *, int, |
762 | struct dwarf2_cu *); | |
763 | ||
a14ed312 | 764 | static char *read_partial_die (struct partial_die_info *, |
72bf9492 | 765 | struct abbrev_info *abbrev, unsigned int, |
e7c27a73 | 766 | bfd *, char *, struct dwarf2_cu *); |
c906108c | 767 | |
72bf9492 | 768 | static struct partial_die_info *find_partial_die (unsigned long, |
10b3939b | 769 | struct dwarf2_cu *); |
72bf9492 DJ |
770 | |
771 | static void fixup_partial_die (struct partial_die_info *, | |
772 | struct dwarf2_cu *); | |
773 | ||
107d2387 | 774 | static char *read_full_die (struct die_info **, bfd *, char *, |
e7c27a73 | 775 | struct dwarf2_cu *, int *); |
c906108c | 776 | |
a14ed312 | 777 | static char *read_attribute (struct attribute *, struct attr_abbrev *, |
e7c27a73 | 778 | bfd *, char *, struct dwarf2_cu *); |
c906108c | 779 | |
a8329558 | 780 | static char *read_attribute_value (struct attribute *, unsigned, |
e7c27a73 | 781 | bfd *, char *, struct dwarf2_cu *); |
a8329558 | 782 | |
a14ed312 | 783 | static unsigned int read_1_byte (bfd *, char *); |
c906108c | 784 | |
a14ed312 | 785 | static int read_1_signed_byte (bfd *, char *); |
c906108c | 786 | |
a14ed312 | 787 | static unsigned int read_2_bytes (bfd *, char *); |
c906108c | 788 | |
a14ed312 | 789 | static unsigned int read_4_bytes (bfd *, char *); |
c906108c | 790 | |
ce5d95e1 | 791 | static unsigned long read_8_bytes (bfd *, char *); |
c906108c | 792 | |
e7c27a73 | 793 | static CORE_ADDR read_address (bfd *, char *ptr, struct dwarf2_cu *, |
107d2387 | 794 | int *bytes_read); |
c906108c | 795 | |
613e1657 KB |
796 | static LONGEST read_initial_length (bfd *, char *, |
797 | struct comp_unit_head *, int *bytes_read); | |
798 | ||
799 | static LONGEST read_offset (bfd *, char *, const struct comp_unit_head *, | |
800 | int *bytes_read); | |
801 | ||
a14ed312 | 802 | static char *read_n_bytes (bfd *, char *, unsigned int); |
c906108c | 803 | |
a14ed312 | 804 | static char *read_string (bfd *, char *, unsigned int *); |
c906108c | 805 | |
4bdf3d34 JJ |
806 | static char *read_indirect_string (bfd *, char *, const struct comp_unit_head *, |
807 | unsigned int *); | |
808 | ||
ce5d95e1 | 809 | static unsigned long read_unsigned_leb128 (bfd *, char *, unsigned int *); |
c906108c | 810 | |
ce5d95e1 | 811 | static long read_signed_leb128 (bfd *, char *, unsigned int *); |
c906108c | 812 | |
4bb7a0a7 DJ |
813 | static char *skip_leb128 (bfd *, char *); |
814 | ||
e142c38c | 815 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 816 | |
e142c38c DJ |
817 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
818 | struct dwarf2_cu *); | |
c906108c | 819 | |
05cf31d1 JB |
820 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
821 | struct dwarf2_cu *cu); | |
822 | ||
e142c38c | 823 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 824 | |
e142c38c DJ |
825 | static struct die_info *die_specification (struct die_info *die, |
826 | struct dwarf2_cu *); | |
63d06c5c | 827 | |
debd256d JB |
828 | static void free_line_header (struct line_header *lh); |
829 | ||
aaa75496 JB |
830 | static void add_file_name (struct line_header *, char *, unsigned int, |
831 | unsigned int, unsigned int); | |
832 | ||
debd256d JB |
833 | static struct line_header *(dwarf_decode_line_header |
834 | (unsigned int offset, | |
e7c27a73 | 835 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
836 | |
837 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 838 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 839 | |
a14ed312 | 840 | static void dwarf2_start_subfile (char *, char *); |
c906108c | 841 | |
a14ed312 | 842 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 843 | struct dwarf2_cu *); |
c906108c | 844 | |
a14ed312 | 845 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 846 | struct dwarf2_cu *); |
c906108c | 847 | |
2df3850c JM |
848 | static void dwarf2_const_value_data (struct attribute *attr, |
849 | struct symbol *sym, | |
850 | int bits); | |
851 | ||
e7c27a73 | 852 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 853 | |
e7c27a73 DJ |
854 | static struct type *die_containing_type (struct die_info *, |
855 | struct dwarf2_cu *); | |
c906108c | 856 | |
e7c27a73 | 857 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 858 | |
e7c27a73 | 859 | static void read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 860 | |
086ed43d | 861 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 862 | |
987504bb JJ |
863 | static char *typename_concat (struct obstack *, const char *prefix, const char *suffix, |
864 | struct dwarf2_cu *); | |
63d06c5c | 865 | |
e7c27a73 | 866 | static void read_typedef (struct die_info *, struct dwarf2_cu *); |
c906108c | 867 | |
e7c27a73 | 868 | static void read_base_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 869 | |
a02abb62 JB |
870 | static void read_subrange_type (struct die_info *die, struct dwarf2_cu *cu); |
871 | ||
e7c27a73 | 872 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 873 | |
e7c27a73 | 874 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 875 | |
e7c27a73 | 876 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 877 | |
a14ed312 | 878 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 879 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 880 | |
fae299cd DC |
881 | static void get_scope_pc_bounds (struct die_info *, |
882 | CORE_ADDR *, CORE_ADDR *, | |
883 | struct dwarf2_cu *); | |
884 | ||
a14ed312 | 885 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 886 | struct dwarf2_cu *); |
c906108c | 887 | |
a14ed312 | 888 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 889 | struct type *, struct dwarf2_cu *); |
c906108c | 890 | |
a14ed312 | 891 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 892 | struct die_info *, struct type *, |
e7c27a73 | 893 | struct dwarf2_cu *); |
c906108c | 894 | |
a14ed312 | 895 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 896 | struct type *, struct dwarf2_cu *); |
c906108c | 897 | |
134d01f1 DJ |
898 | static void read_structure_type (struct die_info *, struct dwarf2_cu *); |
899 | ||
900 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 901 | |
8176b9b8 DC |
902 | static char *determine_class_name (struct die_info *die, struct dwarf2_cu *cu); |
903 | ||
e7c27a73 | 904 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 905 | |
e7c27a73 | 906 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 907 | |
38d518c9 | 908 | static const char *namespace_name (struct die_info *die, |
e142c38c | 909 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 910 | |
134d01f1 DJ |
911 | static void read_enumeration_type (struct die_info *, struct dwarf2_cu *); |
912 | ||
913 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 914 | |
e7c27a73 | 915 | static struct type *dwarf_base_type (int, int, struct dwarf2_cu *); |
c906108c | 916 | |
e7c27a73 | 917 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 918 | |
e7c27a73 | 919 | static void read_array_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 920 | |
7ca2d3a3 DL |
921 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
922 | struct dwarf2_cu *); | |
923 | ||
e7c27a73 | 924 | static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 925 | |
e7c27a73 DJ |
926 | static void read_tag_ptr_to_member_type (struct die_info *, |
927 | struct dwarf2_cu *); | |
c906108c | 928 | |
e7c27a73 | 929 | static void read_tag_reference_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 930 | |
e7c27a73 | 931 | static void read_tag_const_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 932 | |
e7c27a73 | 933 | static void read_tag_volatile_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 934 | |
e7c27a73 | 935 | static void read_tag_string_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 936 | |
e7c27a73 | 937 | static void read_subroutine_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 938 | |
e7c27a73 | 939 | static struct die_info *read_comp_unit (char *, bfd *, struct dwarf2_cu *); |
c906108c | 940 | |
639d11d3 | 941 | static struct die_info *read_die_and_children (char *info_ptr, bfd *abfd, |
e7c27a73 | 942 | struct dwarf2_cu *, |
639d11d3 DC |
943 | char **new_info_ptr, |
944 | struct die_info *parent); | |
945 | ||
946 | static struct die_info *read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 947 | struct dwarf2_cu *, |
639d11d3 DC |
948 | char **new_info_ptr, |
949 | struct die_info *parent); | |
950 | ||
a14ed312 | 951 | static void free_die_list (struct die_info *); |
c906108c | 952 | |
e7c27a73 | 953 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 954 | |
e142c38c | 955 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 956 | |
e142c38c | 957 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 958 | |
e142c38c DJ |
959 | static struct die_info *dwarf2_extension (struct die_info *die, |
960 | struct dwarf2_cu *); | |
9219021c | 961 | |
a14ed312 | 962 | static char *dwarf_tag_name (unsigned int); |
c906108c | 963 | |
a14ed312 | 964 | static char *dwarf_attr_name (unsigned int); |
c906108c | 965 | |
a14ed312 | 966 | static char *dwarf_form_name (unsigned int); |
c906108c | 967 | |
a14ed312 | 968 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 969 | |
a14ed312 | 970 | static char *dwarf_bool_name (unsigned int); |
c906108c | 971 | |
a14ed312 | 972 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
973 | |
974 | #if 0 | |
a14ed312 | 975 | static char *dwarf_cfi_name (unsigned int); |
c906108c | 976 | |
a14ed312 | 977 | struct die_info *copy_die (struct die_info *); |
c906108c SS |
978 | #endif |
979 | ||
f9aca02d | 980 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 981 | |
f9aca02d | 982 | static void dump_die (struct die_info *); |
c906108c | 983 | |
f9aca02d | 984 | static void dump_die_list (struct die_info *); |
c906108c | 985 | |
10b3939b DJ |
986 | static void store_in_ref_table (unsigned int, struct die_info *, |
987 | struct dwarf2_cu *); | |
c906108c | 988 | |
e142c38c DJ |
989 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
990 | struct dwarf2_cu *); | |
c906108c | 991 | |
a02abb62 JB |
992 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
993 | ||
10b3939b DJ |
994 | static struct die_info *follow_die_ref (struct die_info *, |
995 | struct attribute *, | |
996 | struct dwarf2_cu *); | |
c906108c | 997 | |
e142c38c DJ |
998 | static struct type *dwarf2_fundamental_type (struct objfile *, int, |
999 | struct dwarf2_cu *); | |
c906108c SS |
1000 | |
1001 | /* memory allocation interface */ | |
1002 | ||
7b5a2f43 | 1003 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1004 | |
f3dd6933 | 1005 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1006 | |
a14ed312 | 1007 | static struct die_info *dwarf_alloc_die (void); |
c906108c | 1008 | |
e142c38c | 1009 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1010 | |
e142c38c DJ |
1011 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1012 | struct dwarf2_cu *); | |
5fb290d7 | 1013 | |
2e276125 | 1014 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1015 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1016 | |
8e19ed76 PS |
1017 | static int attr_form_is_block (struct attribute *); |
1018 | ||
4c2df51b DJ |
1019 | static void |
1020 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 1021 | struct dwarf2_cu *cu); |
4c2df51b | 1022 | |
4bb7a0a7 DJ |
1023 | static char *skip_one_die (char *info_ptr, struct abbrev_info *abbrev, |
1024 | struct dwarf2_cu *cu); | |
1025 | ||
72bf9492 DJ |
1026 | static void free_stack_comp_unit (void *); |
1027 | ||
1028 | static void *hashtab_obstack_allocate (void *data, size_t size, size_t count); | |
1029 | ||
1030 | static void dummy_obstack_deallocate (void *object, void *data); | |
1031 | ||
1032 | static hashval_t partial_die_hash (const void *item); | |
1033 | ||
1034 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1035 | ||
ae038cb0 DJ |
1036 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
1037 | (unsigned long offset, struct objfile *objfile); | |
1038 | ||
1039 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
1040 | (unsigned long offset, struct objfile *objfile); | |
1041 | ||
1042 | static void free_one_comp_unit (void *); | |
1043 | ||
1044 | static void free_cached_comp_units (void *); | |
1045 | ||
1046 | static void age_cached_comp_units (void); | |
1047 | ||
1048 | static void free_one_cached_comp_unit (void *); | |
1049 | ||
1c379e20 DJ |
1050 | static void set_die_type (struct die_info *, struct type *, |
1051 | struct dwarf2_cu *); | |
1052 | ||
1c379e20 DJ |
1053 | static void reset_die_and_siblings_types (struct die_info *, |
1054 | struct dwarf2_cu *); | |
1c379e20 | 1055 | |
ae038cb0 DJ |
1056 | static void create_all_comp_units (struct objfile *); |
1057 | ||
10b3939b DJ |
1058 | static struct dwarf2_cu *load_full_comp_unit (struct dwarf2_per_cu_data *); |
1059 | ||
1060 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1061 | ||
1062 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1063 | struct dwarf2_per_cu_data *); | |
1064 | ||
ae038cb0 DJ |
1065 | static void dwarf2_mark (struct dwarf2_cu *); |
1066 | ||
1067 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1068 | ||
c906108c SS |
1069 | /* Try to locate the sections we need for DWARF 2 debugging |
1070 | information and return true if we have enough to do something. */ | |
1071 | ||
1072 | int | |
6502dd73 | 1073 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1074 | { |
6502dd73 DJ |
1075 | struct dwarf2_per_objfile *data; |
1076 | ||
1077 | /* Initialize per-objfile state. */ | |
1078 | data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
1079 | memset (data, 0, sizeof (*data)); | |
1080 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1081 | dwarf2_per_objfile = data; | |
1082 | ||
188dd5d6 DJ |
1083 | dwarf_info_section = 0; |
1084 | dwarf_abbrev_section = 0; | |
1085 | dwarf_line_section = 0; | |
1086 | dwarf_str_section = 0; | |
1087 | dwarf_macinfo_section = 0; | |
1088 | dwarf_frame_section = 0; | |
1089 | dwarf_eh_frame_section = 0; | |
1090 | dwarf_ranges_section = 0; | |
1091 | dwarf_loc_section = 0; | |
af34e669 | 1092 | |
6502dd73 | 1093 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 1094 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
1095 | } |
1096 | ||
1097 | /* This function is mapped across the sections and remembers the | |
1098 | offset and size of each of the debugging sections we are interested | |
1099 | in. */ | |
1100 | ||
1101 | static void | |
4efb68b1 | 1102 | dwarf2_locate_sections (bfd *ignore_abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1103 | { |
6314a349 | 1104 | if (strcmp (sectp->name, INFO_SECTION) == 0) |
c906108c | 1105 | { |
2c500098 | 1106 | dwarf2_per_objfile->info_size = bfd_get_section_size (sectp); |
086df311 | 1107 | dwarf_info_section = sectp; |
c906108c | 1108 | } |
6314a349 | 1109 | else if (strcmp (sectp->name, ABBREV_SECTION) == 0) |
c906108c | 1110 | { |
2c500098 | 1111 | dwarf2_per_objfile->abbrev_size = bfd_get_section_size (sectp); |
086df311 | 1112 | dwarf_abbrev_section = sectp; |
c906108c | 1113 | } |
6314a349 | 1114 | else if (strcmp (sectp->name, LINE_SECTION) == 0) |
c906108c | 1115 | { |
2c500098 | 1116 | dwarf2_per_objfile->line_size = bfd_get_section_size (sectp); |
086df311 | 1117 | dwarf_line_section = sectp; |
c906108c | 1118 | } |
6314a349 | 1119 | else if (strcmp (sectp->name, PUBNAMES_SECTION) == 0) |
c906108c | 1120 | { |
2c500098 | 1121 | dwarf2_per_objfile->pubnames_size = bfd_get_section_size (sectp); |
086df311 | 1122 | dwarf_pubnames_section = sectp; |
c906108c | 1123 | } |
6314a349 | 1124 | else if (strcmp (sectp->name, ARANGES_SECTION) == 0) |
c906108c | 1125 | { |
2c500098 | 1126 | dwarf2_per_objfile->aranges_size = bfd_get_section_size (sectp); |
086df311 | 1127 | dwarf_aranges_section = sectp; |
c906108c | 1128 | } |
6314a349 | 1129 | else if (strcmp (sectp->name, LOC_SECTION) == 0) |
c906108c | 1130 | { |
2c500098 | 1131 | dwarf2_per_objfile->loc_size = bfd_get_section_size (sectp); |
086df311 | 1132 | dwarf_loc_section = sectp; |
c906108c | 1133 | } |
6314a349 | 1134 | else if (strcmp (sectp->name, MACINFO_SECTION) == 0) |
c906108c | 1135 | { |
2c500098 | 1136 | dwarf2_per_objfile->macinfo_size = bfd_get_section_size (sectp); |
0cf824c9 | 1137 | dwarf_macinfo_section = sectp; |
c906108c | 1138 | } |
6314a349 | 1139 | else if (strcmp (sectp->name, STR_SECTION) == 0) |
c906108c | 1140 | { |
2c500098 | 1141 | dwarf2_per_objfile->str_size = bfd_get_section_size (sectp); |
086df311 | 1142 | dwarf_str_section = sectp; |
c906108c | 1143 | } |
6314a349 | 1144 | else if (strcmp (sectp->name, FRAME_SECTION) == 0) |
b6af0555 | 1145 | { |
2c500098 | 1146 | dwarf2_per_objfile->frame_size = bfd_get_section_size (sectp); |
086df311 | 1147 | dwarf_frame_section = sectp; |
b6af0555 | 1148 | } |
6314a349 | 1149 | else if (strcmp (sectp->name, EH_FRAME_SECTION) == 0) |
b6af0555 | 1150 | { |
3799ccc6 EZ |
1151 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1152 | if (aflag & SEC_HAS_CONTENTS) | |
1153 | { | |
2c500098 | 1154 | dwarf2_per_objfile->eh_frame_size = bfd_get_section_size (sectp); |
3799ccc6 EZ |
1155 | dwarf_eh_frame_section = sectp; |
1156 | } | |
b6af0555 | 1157 | } |
6314a349 | 1158 | else if (strcmp (sectp->name, RANGES_SECTION) == 0) |
af34e669 | 1159 | { |
2c500098 | 1160 | dwarf2_per_objfile->ranges_size = bfd_get_section_size (sectp); |
6f10aeb1 | 1161 | dwarf_ranges_section = sectp; |
af34e669 | 1162 | } |
c906108c SS |
1163 | } |
1164 | ||
1165 | /* Build a partial symbol table. */ | |
1166 | ||
1167 | void | |
fba45db2 | 1168 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c | 1169 | { |
c906108c SS |
1170 | /* We definitely need the .debug_info and .debug_abbrev sections */ |
1171 | ||
6502dd73 DJ |
1172 | dwarf2_per_objfile->info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1173 | dwarf2_per_objfile->abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
188dd5d6 DJ |
1174 | |
1175 | if (dwarf_line_section) | |
6502dd73 | 1176 | dwarf2_per_objfile->line_buffer = dwarf2_read_section (objfile, dwarf_line_section); |
41ff2da1 | 1177 | else |
6502dd73 | 1178 | dwarf2_per_objfile->line_buffer = NULL; |
c906108c | 1179 | |
188dd5d6 | 1180 | if (dwarf_str_section) |
6502dd73 | 1181 | dwarf2_per_objfile->str_buffer = dwarf2_read_section (objfile, dwarf_str_section); |
4bdf3d34 | 1182 | else |
6502dd73 | 1183 | dwarf2_per_objfile->str_buffer = NULL; |
4bdf3d34 | 1184 | |
188dd5d6 | 1185 | if (dwarf_macinfo_section) |
6502dd73 | 1186 | dwarf2_per_objfile->macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1187 | dwarf_macinfo_section); |
2e276125 | 1188 | else |
6502dd73 | 1189 | dwarf2_per_objfile->macinfo_buffer = NULL; |
2e276125 | 1190 | |
188dd5d6 | 1191 | if (dwarf_ranges_section) |
6502dd73 | 1192 | dwarf2_per_objfile->ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); |
af34e669 | 1193 | else |
6502dd73 | 1194 | dwarf2_per_objfile->ranges_buffer = NULL; |
af34e669 | 1195 | |
188dd5d6 | 1196 | if (dwarf_loc_section) |
6502dd73 | 1197 | dwarf2_per_objfile->loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); |
0d53c4c4 | 1198 | else |
6502dd73 | 1199 | dwarf2_per_objfile->loc_buffer = NULL; |
0d53c4c4 | 1200 | |
ef96bde8 EZ |
1201 | if (mainline |
1202 | || (objfile->global_psymbols.size == 0 | |
1203 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1204 | { |
1205 | init_psymbol_list (objfile, 1024); | |
1206 | } | |
1207 | ||
1208 | #if 0 | |
1209 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1210 | { | |
d4f3574e | 1211 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1212 | .debug_pubnames sections */ |
1213 | ||
d4f3574e | 1214 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1215 | } |
1216 | else | |
1217 | #endif | |
1218 | /* only test this case for now */ | |
c5aa993b | 1219 | { |
c906108c | 1220 | /* In this case we have to work a bit harder */ |
d4f3574e | 1221 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1222 | } |
1223 | } | |
1224 | ||
1225 | #if 0 | |
1226 | /* Build the partial symbol table from the information in the | |
1227 | .debug_pubnames and .debug_aranges sections. */ | |
1228 | ||
1229 | static void | |
fba45db2 | 1230 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1231 | { |
1232 | bfd *abfd = objfile->obfd; | |
1233 | char *aranges_buffer, *pubnames_buffer; | |
1234 | char *aranges_ptr, *pubnames_ptr; | |
1235 | unsigned int entry_length, version, info_offset, info_size; | |
1236 | ||
1237 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1238 | dwarf_pubnames_section); |
c906108c | 1239 | pubnames_ptr = pubnames_buffer; |
6502dd73 | 1240 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames_size) |
c906108c | 1241 | { |
613e1657 KB |
1242 | struct comp_unit_head cu_header; |
1243 | int bytes_read; | |
1244 | ||
1245 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
1246 | &bytes_read); | |
1247 | pubnames_ptr += bytes_read; | |
c906108c SS |
1248 | version = read_1_byte (abfd, pubnames_ptr); |
1249 | pubnames_ptr += 1; | |
1250 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1251 | pubnames_ptr += 4; | |
1252 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1253 | pubnames_ptr += 4; | |
1254 | } | |
1255 | ||
1256 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1257 | dwarf_aranges_section); |
c906108c SS |
1258 | |
1259 | } | |
1260 | #endif | |
1261 | ||
107d2387 AC |
1262 | /* Read in the comp unit header information from the debug_info at |
1263 | info_ptr. */ | |
1264 | ||
1265 | static char * | |
1266 | read_comp_unit_head (struct comp_unit_head *cu_header, | |
1267 | char *info_ptr, bfd *abfd) | |
1268 | { | |
1269 | int signed_addr; | |
613e1657 KB |
1270 | int bytes_read; |
1271 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, | |
1272 | &bytes_read); | |
1273 | info_ptr += bytes_read; | |
107d2387 AC |
1274 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1275 | info_ptr += 2; | |
613e1657 KB |
1276 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1277 | &bytes_read); | |
1278 | info_ptr += bytes_read; | |
107d2387 AC |
1279 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1280 | info_ptr += 1; | |
1281 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1282 | if (signed_addr < 0) | |
8e65ff28 AC |
1283 | internal_error (__FILE__, __LINE__, |
1284 | "read_comp_unit_head: dwarf from non elf file"); | |
107d2387 AC |
1285 | cu_header->signed_addr_p = signed_addr; |
1286 | return info_ptr; | |
1287 | } | |
1288 | ||
72bf9492 DJ |
1289 | static char * |
1290 | partial_read_comp_unit_head (struct comp_unit_head *header, char *info_ptr, | |
1291 | bfd *abfd) | |
1292 | { | |
1293 | char *beg_of_comp_unit = info_ptr; | |
1294 | ||
1295 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1296 | ||
1297 | if (header->version != 2) | |
1298 | error ("Dwarf Error: wrong version in compilation unit header " | |
1299 | "(is %d, should be %d) [in module %s]", header->version, | |
1300 | 2, bfd_get_filename (abfd)); | |
1301 | ||
1302 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev_size) | |
1303 | error ("Dwarf Error: bad offset (0x%lx) in compilation unit header " | |
1304 | "(offset 0x%lx + 6) [in module %s]", | |
1305 | (long) header->abbrev_offset, | |
1306 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1307 | bfd_get_filename (abfd)); | |
1308 | ||
1309 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
1310 | > dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1311 | error ("Dwarf Error: bad length (0x%lx) in compilation unit header " | |
1312 | "(offset 0x%lx + 0) [in module %s]", | |
1313 | (long) header->length, | |
1314 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1315 | bfd_get_filename (abfd)); | |
1316 | ||
1317 | return info_ptr; | |
1318 | } | |
1319 | ||
aaa75496 JB |
1320 | /* Allocate a new partial symtab for file named NAME and mark this new |
1321 | partial symtab as being an include of PST. */ | |
1322 | ||
1323 | static void | |
1324 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1325 | struct objfile *objfile) | |
1326 | { | |
1327 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1328 | ||
1329 | subpst->section_offsets = pst->section_offsets; | |
1330 | subpst->textlow = 0; | |
1331 | subpst->texthigh = 0; | |
1332 | ||
1333 | subpst->dependencies = (struct partial_symtab **) | |
1334 | obstack_alloc (&objfile->objfile_obstack, | |
1335 | sizeof (struct partial_symtab *)); | |
1336 | subpst->dependencies[0] = pst; | |
1337 | subpst->number_of_dependencies = 1; | |
1338 | ||
1339 | subpst->globals_offset = 0; | |
1340 | subpst->n_global_syms = 0; | |
1341 | subpst->statics_offset = 0; | |
1342 | subpst->n_static_syms = 0; | |
1343 | subpst->symtab = NULL; | |
1344 | subpst->read_symtab = pst->read_symtab; | |
1345 | subpst->readin = 0; | |
1346 | ||
1347 | /* No private part is necessary for include psymtabs. This property | |
1348 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1349 | the regular ones. */ |
58a9656e | 1350 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1351 | } |
1352 | ||
1353 | /* Read the Line Number Program data and extract the list of files | |
1354 | included by the source file represented by PST. Build an include | |
1355 | partial symtab for each of these included files. | |
1356 | ||
1357 | This procedure assumes that there *is* a Line Number Program in | |
1358 | the given CU. Callers should check that PDI->HAS_STMT_LIST is set | |
1359 | before calling this procedure. */ | |
1360 | ||
1361 | static void | |
1362 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
1363 | struct partial_die_info *pdi, | |
1364 | struct partial_symtab *pst) | |
1365 | { | |
1366 | struct objfile *objfile = cu->objfile; | |
1367 | bfd *abfd = objfile->obfd; | |
1368 | struct line_header *lh; | |
1369 | ||
1370 | lh = dwarf_decode_line_header (pdi->line_offset, abfd, cu); | |
1371 | if (lh == NULL) | |
1372 | return; /* No linetable, so no includes. */ | |
1373 | ||
1374 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1375 | ||
1376 | free_line_header (lh); | |
1377 | } | |
1378 | ||
1379 | ||
c906108c SS |
1380 | /* Build the partial symbol table by doing a quick pass through the |
1381 | .debug_info and .debug_abbrev sections. */ | |
1382 | ||
1383 | static void | |
fba45db2 | 1384 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1385 | { |
1386 | /* Instead of reading this into a big buffer, we should probably use | |
1387 | mmap() on architectures that support it. (FIXME) */ | |
1388 | bfd *abfd = objfile->obfd; | |
72bf9492 | 1389 | char *info_ptr; |
c906108c | 1390 | char *beg_of_comp_unit; |
c906108c SS |
1391 | struct partial_die_info comp_unit_die; |
1392 | struct partial_symtab *pst; | |
ae038cb0 | 1393 | struct cleanup *back_to; |
e142c38c | 1394 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1395 | |
6502dd73 | 1396 | info_ptr = dwarf2_per_objfile->info_buffer; |
c906108c | 1397 | |
ae038cb0 DJ |
1398 | /* Any cached compilation units will be linked by the per-objfile |
1399 | read_in_chain. Make sure to free them when we're done. */ | |
1400 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
1401 | ||
10b3939b DJ |
1402 | create_all_comp_units (objfile); |
1403 | ||
6502dd73 | 1404 | /* Since the objects we're extracting from .debug_info vary in |
af703f96 | 1405 | length, only the individual functions to extract them (like |
72bf9492 | 1406 | read_comp_unit_head and load_partial_die) can really know whether |
af703f96 JB |
1407 | the buffer is large enough to hold another complete object. |
1408 | ||
6502dd73 DJ |
1409 | At the moment, they don't actually check that. If .debug_info |
1410 | holds just one extra byte after the last compilation unit's dies, | |
1411 | then read_comp_unit_head will happily read off the end of the | |
1412 | buffer. read_partial_die is similarly casual. Those functions | |
1413 | should be fixed. | |
af703f96 JB |
1414 | |
1415 | For this loop condition, simply checking whether there's any data | |
1416 | left at all should be sufficient. */ | |
6502dd73 DJ |
1417 | while (info_ptr < (dwarf2_per_objfile->info_buffer |
1418 | + dwarf2_per_objfile->info_size)) | |
c906108c | 1419 | { |
f3dd6933 | 1420 | struct cleanup *back_to_inner; |
e7c27a73 | 1421 | struct dwarf2_cu cu; |
72bf9492 DJ |
1422 | struct abbrev_info *abbrev; |
1423 | unsigned int bytes_read; | |
1424 | struct dwarf2_per_cu_data *this_cu; | |
1425 | ||
c906108c | 1426 | beg_of_comp_unit = info_ptr; |
c906108c | 1427 | |
72bf9492 DJ |
1428 | memset (&cu, 0, sizeof (cu)); |
1429 | ||
1430 | obstack_init (&cu.comp_unit_obstack); | |
1431 | ||
1432 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); | |
1433 | ||
e7c27a73 | 1434 | cu.objfile = objfile; |
72bf9492 | 1435 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, abfd); |
e7c27a73 | 1436 | |
57349743 | 1437 | /* Complete the cu_header */ |
6502dd73 | 1438 | cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
e7c27a73 DJ |
1439 | cu.header.first_die_ptr = info_ptr; |
1440 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1441 | |
e142c38c DJ |
1442 | cu.list_in_scope = &file_symbols; |
1443 | ||
c906108c | 1444 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1445 | dwarf2_read_abbrevs (abfd, &cu); |
72bf9492 | 1446 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1447 | |
10b3939b | 1448 | this_cu = dwarf2_find_comp_unit (cu.header.offset, objfile); |
ae038cb0 | 1449 | |
c906108c | 1450 | /* Read the compilation unit die */ |
72bf9492 DJ |
1451 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, &cu); |
1452 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1453 | abfd, info_ptr, &cu); | |
c906108c SS |
1454 | |
1455 | /* Set the language we're debugging */ | |
e142c38c | 1456 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1457 | |
1458 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1459 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1460 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1461 | comp_unit_die.lowpc, |
1462 | objfile->global_psymbols.next, | |
1463 | objfile->static_psymbols.next); | |
1464 | ||
ae038cb0 DJ |
1465 | if (comp_unit_die.dirname) |
1466 | pst->dirname = xstrdup (comp_unit_die.dirname); | |
57c22c6c | 1467 | |
10b3939b DJ |
1468 | pst->read_symtab_private = (char *) this_cu; |
1469 | ||
613e1657 | 1470 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1471 | |
1472 | /* Store the function that reads in the rest of the symbol table */ | |
1473 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1474 | ||
10b3939b DJ |
1475 | /* If this compilation unit was already read in, free the |
1476 | cached copy in order to read it in again. This is | |
1477 | necessary because we skipped some symbols when we first | |
1478 | read in the compilation unit (see load_partial_dies). | |
1479 | This problem could be avoided, but the benefit is | |
1480 | unclear. */ | |
1481 | if (this_cu->cu != NULL) | |
1482 | free_one_cached_comp_unit (this_cu->cu); | |
ae038cb0 | 1483 | |
10b3939b | 1484 | cu.per_cu = this_cu; |
ae038cb0 | 1485 | |
10b3939b DJ |
1486 | /* Note that this is a pointer to our stack frame, being |
1487 | added to a global data structure. It will be cleaned up | |
1488 | in free_stack_comp_unit when we finish with this | |
1489 | compilation unit. */ | |
1490 | this_cu->cu = &cu; | |
ae038cb0 | 1491 | |
10b3939b | 1492 | this_cu->psymtab = pst; |
ae038cb0 | 1493 | |
c906108c SS |
1494 | /* Check if comp unit has_children. |
1495 | If so, read the rest of the partial symbols from this comp unit. | |
1496 | If not, there's no more debug_info for this comp unit. */ | |
1497 | if (comp_unit_die.has_children) | |
1498 | { | |
72bf9492 DJ |
1499 | struct partial_die_info *first_die; |
1500 | ||
91c24f0a DC |
1501 | lowpc = ((CORE_ADDR) -1); |
1502 | highpc = ((CORE_ADDR) 0); | |
1503 | ||
72bf9492 DJ |
1504 | first_die = load_partial_dies (abfd, info_ptr, 1, &cu); |
1505 | ||
1506 | scan_partial_symbols (first_die, &lowpc, &highpc, &cu); | |
c906108c | 1507 | |
91c24f0a DC |
1508 | /* If we didn't find a lowpc, set it to highpc to avoid |
1509 | complaints from `maint check'. */ | |
1510 | if (lowpc == ((CORE_ADDR) -1)) | |
1511 | lowpc = highpc; | |
72bf9492 | 1512 | |
c906108c SS |
1513 | /* If the compilation unit didn't have an explicit address range, |
1514 | then use the information extracted from its child dies. */ | |
0b010bcc | 1515 | if (! comp_unit_die.has_pc_info) |
c906108c | 1516 | { |
c5aa993b | 1517 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1518 | comp_unit_die.highpc = highpc; |
1519 | } | |
1520 | } | |
c5aa993b | 1521 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1522 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1523 | ||
1524 | pst->n_global_syms = objfile->global_psymbols.next - | |
1525 | (objfile->global_psymbols.list + pst->globals_offset); | |
1526 | pst->n_static_syms = objfile->static_psymbols.next - | |
1527 | (objfile->static_psymbols.list + pst->statics_offset); | |
1528 | sort_pst_symbols (pst); | |
1529 | ||
1530 | /* If there is already a psymtab or symtab for a file of this | |
1531 | name, remove it. (If there is a symtab, more drastic things | |
1532 | also happen.) This happens in VxWorks. */ | |
1533 | free_named_symtabs (pst->filename); | |
1534 | ||
aaa75496 JB |
1535 | if (comp_unit_die.has_stmt_list) |
1536 | { | |
1537 | /* Get the list of files included in the current compilation unit, | |
1538 | and build a psymtab for each of them. */ | |
1539 | dwarf2_build_include_psymtabs (&cu, &comp_unit_die, pst); | |
1540 | } | |
1541 | ||
72bf9492 | 1542 | info_ptr = beg_of_comp_unit + cu.header.length |
e7c27a73 | 1543 | + cu.header.initial_length_size; |
f3dd6933 DJ |
1544 | |
1545 | do_cleanups (back_to_inner); | |
c906108c | 1546 | } |
ae038cb0 DJ |
1547 | do_cleanups (back_to); |
1548 | } | |
1549 | ||
1550 | /* Load the DIEs for a secondary CU into memory. */ | |
1551 | ||
1552 | static void | |
1553 | load_comp_unit (struct dwarf2_per_cu_data *this_cu, struct objfile *objfile) | |
1554 | { | |
1555 | bfd *abfd = objfile->obfd; | |
1556 | char *info_ptr, *beg_of_comp_unit; | |
1557 | struct partial_die_info comp_unit_die; | |
1558 | struct dwarf2_cu *cu; | |
1559 | struct abbrev_info *abbrev; | |
1560 | unsigned int bytes_read; | |
1561 | struct cleanup *back_to; | |
1562 | ||
1563 | info_ptr = dwarf2_per_objfile->info_buffer + this_cu->offset; | |
1564 | beg_of_comp_unit = info_ptr; | |
1565 | ||
1566 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
1567 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
1568 | ||
1569 | obstack_init (&cu->comp_unit_obstack); | |
1570 | ||
1571 | cu->objfile = objfile; | |
1572 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, abfd); | |
1573 | ||
1574 | /* Complete the cu_header. */ | |
1575 | cu->header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; | |
1576 | cu->header.first_die_ptr = info_ptr; | |
1577 | cu->header.cu_head_ptr = beg_of_comp_unit; | |
1578 | ||
1579 | /* Read the abbrevs for this compilation unit into a table. */ | |
1580 | dwarf2_read_abbrevs (abfd, cu); | |
1581 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
1582 | ||
1583 | /* Read the compilation unit die. */ | |
1584 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1585 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1586 | abfd, info_ptr, cu); | |
1587 | ||
1588 | /* Set the language we're debugging. */ | |
1589 | set_cu_language (comp_unit_die.language, cu); | |
1590 | ||
1591 | /* Link this compilation unit into the compilation unit tree. */ | |
1592 | this_cu->cu = cu; | |
1593 | cu->per_cu = this_cu; | |
1594 | ||
1595 | /* Check if comp unit has_children. | |
1596 | If so, read the rest of the partial symbols from this comp unit. | |
1597 | If not, there's no more debug_info for this comp unit. */ | |
1598 | if (comp_unit_die.has_children) | |
1599 | load_partial_dies (abfd, info_ptr, 0, cu); | |
1600 | ||
1601 | do_cleanups (back_to); | |
1602 | } | |
1603 | ||
1604 | /* Create a list of all compilation units in OBJFILE. We do this only | |
1605 | if an inter-comp-unit reference is found; presumably if there is one, | |
1606 | there will be many, and one will occur early in the .debug_info section. | |
1607 | So there's no point in building this list incrementally. */ | |
1608 | ||
1609 | static void | |
1610 | create_all_comp_units (struct objfile *objfile) | |
1611 | { | |
1612 | int n_allocated; | |
1613 | int n_comp_units; | |
1614 | struct dwarf2_per_cu_data **all_comp_units; | |
1615 | char *info_ptr = dwarf2_per_objfile->info_buffer; | |
1616 | ||
1617 | n_comp_units = 0; | |
1618 | n_allocated = 10; | |
1619 | all_comp_units = xmalloc (n_allocated | |
1620 | * sizeof (struct dwarf2_per_cu_data *)); | |
1621 | ||
1622 | while (info_ptr < dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1623 | { | |
1624 | struct comp_unit_head cu_header; | |
1625 | char *beg_of_comp_unit; | |
1626 | struct dwarf2_per_cu_data *this_cu; | |
1627 | unsigned long offset; | |
1628 | int bytes_read; | |
1629 | ||
1630 | offset = info_ptr - dwarf2_per_objfile->info_buffer; | |
1631 | ||
1632 | /* Read just enough information to find out where the next | |
1633 | compilation unit is. */ | |
1634 | cu_header.length = read_initial_length (objfile->obfd, info_ptr, | |
1635 | &cu_header, &bytes_read); | |
1636 | ||
1637 | /* Save the compilation unit for later lookup. */ | |
1638 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
1639 | sizeof (struct dwarf2_per_cu_data)); | |
1640 | memset (this_cu, 0, sizeof (*this_cu)); | |
1641 | this_cu->offset = offset; | |
1642 | this_cu->length = cu_header.length + cu_header.initial_length_size; | |
1643 | ||
1644 | if (n_comp_units == n_allocated) | |
1645 | { | |
1646 | n_allocated *= 2; | |
1647 | all_comp_units = xrealloc (all_comp_units, | |
1648 | n_allocated | |
1649 | * sizeof (struct dwarf2_per_cu_data *)); | |
1650 | } | |
1651 | all_comp_units[n_comp_units++] = this_cu; | |
1652 | ||
1653 | info_ptr = info_ptr + this_cu->length; | |
1654 | } | |
1655 | ||
1656 | dwarf2_per_objfile->all_comp_units | |
1657 | = obstack_alloc (&objfile->objfile_obstack, | |
1658 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1659 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
1660 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1661 | xfree (all_comp_units); | |
1662 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
1663 | } |
1664 | ||
72bf9492 DJ |
1665 | /* Process all loaded DIEs for compilation unit CU, starting at FIRST_DIE. |
1666 | Also set *LOWPC and *HIGHPC to the lowest and highest PC values found | |
1667 | in CU. */ | |
c906108c | 1668 | |
72bf9492 DJ |
1669 | static void |
1670 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
1671 | CORE_ADDR *highpc, struct dwarf2_cu *cu) | |
c906108c | 1672 | { |
e7c27a73 | 1673 | struct objfile *objfile = cu->objfile; |
c906108c | 1674 | bfd *abfd = objfile->obfd; |
72bf9492 | 1675 | struct partial_die_info *pdi; |
c906108c | 1676 | |
91c24f0a DC |
1677 | /* Now, march along the PDI's, descending into ones which have |
1678 | interesting children but skipping the children of the other ones, | |
1679 | until we reach the end of the compilation unit. */ | |
c906108c | 1680 | |
72bf9492 | 1681 | pdi = first_die; |
91c24f0a | 1682 | |
72bf9492 DJ |
1683 | while (pdi != NULL) |
1684 | { | |
1685 | fixup_partial_die (pdi, cu); | |
c906108c | 1686 | |
91c24f0a DC |
1687 | /* Anonymous namespaces have no name but have interesting |
1688 | children, so we need to look at them. Ditto for anonymous | |
1689 | enums. */ | |
933c6fe4 | 1690 | |
72bf9492 DJ |
1691 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
1692 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 1693 | { |
72bf9492 | 1694 | switch (pdi->tag) |
c906108c SS |
1695 | { |
1696 | case DW_TAG_subprogram: | |
72bf9492 | 1697 | if (pdi->has_pc_info) |
c906108c | 1698 | { |
72bf9492 | 1699 | if (pdi->lowpc < *lowpc) |
c906108c | 1700 | { |
72bf9492 | 1701 | *lowpc = pdi->lowpc; |
c906108c | 1702 | } |
72bf9492 | 1703 | if (pdi->highpc > *highpc) |
c906108c | 1704 | { |
72bf9492 | 1705 | *highpc = pdi->highpc; |
c906108c | 1706 | } |
72bf9492 | 1707 | if (!pdi->is_declaration) |
c906108c | 1708 | { |
72bf9492 | 1709 | add_partial_symbol (pdi, cu); |
c906108c SS |
1710 | } |
1711 | } | |
1712 | break; | |
1713 | case DW_TAG_variable: | |
1714 | case DW_TAG_typedef: | |
91c24f0a | 1715 | case DW_TAG_union_type: |
72bf9492 | 1716 | if (!pdi->is_declaration) |
63d06c5c | 1717 | { |
72bf9492 | 1718 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
1719 | } |
1720 | break; | |
c906108c SS |
1721 | case DW_TAG_class_type: |
1722 | case DW_TAG_structure_type: | |
72bf9492 | 1723 | if (!pdi->is_declaration) |
c906108c | 1724 | { |
72bf9492 | 1725 | add_partial_symbol (pdi, cu); |
c906108c SS |
1726 | } |
1727 | break; | |
91c24f0a | 1728 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
1729 | if (!pdi->is_declaration) |
1730 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
1731 | break; |
1732 | case DW_TAG_base_type: | |
a02abb62 | 1733 | case DW_TAG_subrange_type: |
c906108c | 1734 | /* File scope base type definitions are added to the partial |
c5aa993b | 1735 | symbol table. */ |
72bf9492 | 1736 | add_partial_symbol (pdi, cu); |
c906108c | 1737 | break; |
d9fa45fe | 1738 | case DW_TAG_namespace: |
72bf9492 | 1739 | add_partial_namespace (pdi, lowpc, highpc, cu); |
91c24f0a | 1740 | break; |
c906108c SS |
1741 | default: |
1742 | break; | |
1743 | } | |
1744 | } | |
1745 | ||
72bf9492 DJ |
1746 | /* If the die has a sibling, skip to the sibling. */ |
1747 | ||
1748 | pdi = pdi->die_sibling; | |
1749 | } | |
1750 | } | |
1751 | ||
1752 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 1753 | |
72bf9492 | 1754 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
1755 | name is concatenated with "::" and the partial DIE's name. For |
1756 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
1757 | Enumerators are an exception; they use the scope of their parent |
1758 | enumeration type, i.e. the name of the enumeration type is not | |
1759 | prepended to the enumerator. | |
91c24f0a | 1760 | |
72bf9492 DJ |
1761 | There are two complexities. One is DW_AT_specification; in this |
1762 | case "parent" means the parent of the target of the specification, | |
1763 | instead of the direct parent of the DIE. The other is compilers | |
1764 | which do not emit DW_TAG_namespace; in this case we try to guess | |
1765 | the fully qualified name of structure types from their members' | |
1766 | linkage names. This must be done using the DIE's children rather | |
1767 | than the children of any DW_AT_specification target. We only need | |
1768 | to do this for structures at the top level, i.e. if the target of | |
1769 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
1770 | have a parent. */ | |
1771 | ||
1772 | /* Compute the scope prefix associated with PDI's parent, in | |
1773 | compilation unit CU. The result will be allocated on CU's | |
1774 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
1775 | field. NULL is returned if no prefix is necessary. */ | |
1776 | static char * | |
1777 | partial_die_parent_scope (struct partial_die_info *pdi, | |
1778 | struct dwarf2_cu *cu) | |
1779 | { | |
1780 | char *grandparent_scope; | |
1781 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 1782 | |
72bf9492 DJ |
1783 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
1784 | then this means the parent of the specification DIE. */ | |
1785 | ||
1786 | real_pdi = pdi; | |
72bf9492 | 1787 | while (real_pdi->has_specification) |
10b3939b | 1788 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
1789 | |
1790 | parent = real_pdi->die_parent; | |
1791 | if (parent == NULL) | |
1792 | return NULL; | |
1793 | ||
1794 | if (parent->scope_set) | |
1795 | return parent->scope; | |
1796 | ||
1797 | fixup_partial_die (parent, cu); | |
1798 | ||
10b3939b | 1799 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 DJ |
1800 | |
1801 | if (parent->tag == DW_TAG_namespace | |
1802 | || parent->tag == DW_TAG_structure_type | |
1803 | || parent->tag == DW_TAG_class_type | |
1804 | || parent->tag == DW_TAG_union_type) | |
1805 | { | |
1806 | if (grandparent_scope == NULL) | |
1807 | parent->scope = parent->name; | |
1808 | else | |
987504bb JJ |
1809 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
1810 | parent->name, cu); | |
72bf9492 DJ |
1811 | } |
1812 | else if (parent->tag == DW_TAG_enumeration_type) | |
1813 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
1814 | parent->scope = grandparent_scope; | |
1815 | else | |
1816 | { | |
1817 | /* FIXME drow/2004-04-01: What should we be doing with | |
1818 | function-local names? For partial symbols, we should probably be | |
1819 | ignoring them. */ | |
1820 | complaint (&symfile_complaints, | |
1821 | "unhandled containing DIE tag %d for DIE at %d", | |
1822 | parent->tag, pdi->offset); | |
1823 | parent->scope = grandparent_scope; | |
c906108c SS |
1824 | } |
1825 | ||
72bf9492 DJ |
1826 | parent->scope_set = 1; |
1827 | return parent->scope; | |
1828 | } | |
1829 | ||
1830 | /* Return the fully scoped name associated with PDI, from compilation unit | |
1831 | CU. The result will be allocated with malloc. */ | |
1832 | static char * | |
1833 | partial_die_full_name (struct partial_die_info *pdi, | |
1834 | struct dwarf2_cu *cu) | |
1835 | { | |
1836 | char *parent_scope; | |
1837 | ||
1838 | parent_scope = partial_die_parent_scope (pdi, cu); | |
1839 | if (parent_scope == NULL) | |
1840 | return NULL; | |
1841 | else | |
987504bb | 1842 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
1843 | } |
1844 | ||
1845 | static void | |
72bf9492 | 1846 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 1847 | { |
e7c27a73 | 1848 | struct objfile *objfile = cu->objfile; |
c906108c | 1849 | CORE_ADDR addr = 0; |
72bf9492 DJ |
1850 | char *actual_name; |
1851 | const char *my_prefix; | |
5c4e30ca | 1852 | const struct partial_symbol *psym = NULL; |
e142c38c | 1853 | CORE_ADDR baseaddr; |
72bf9492 | 1854 | int built_actual_name = 0; |
e142c38c DJ |
1855 | |
1856 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1857 | |
72bf9492 DJ |
1858 | actual_name = NULL; |
1859 | ||
1860 | if (pdi_needs_namespace (pdi->tag)) | |
63d06c5c | 1861 | { |
72bf9492 DJ |
1862 | actual_name = partial_die_full_name (pdi, cu); |
1863 | if (actual_name) | |
1864 | built_actual_name = 1; | |
63d06c5c DC |
1865 | } |
1866 | ||
72bf9492 DJ |
1867 | if (actual_name == NULL) |
1868 | actual_name = pdi->name; | |
1869 | ||
c906108c SS |
1870 | switch (pdi->tag) |
1871 | { | |
1872 | case DW_TAG_subprogram: | |
1873 | if (pdi->is_external) | |
1874 | { | |
38d518c9 | 1875 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1876 | mst_text, objfile); */ |
38d518c9 | 1877 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1878 | VAR_DOMAIN, LOC_BLOCK, |
1879 | &objfile->global_psymbols, | |
1880 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1881 | cu->language, objfile); |
c906108c SS |
1882 | } |
1883 | else | |
1884 | { | |
38d518c9 | 1885 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1886 | mst_file_text, objfile); */ |
38d518c9 | 1887 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1888 | VAR_DOMAIN, LOC_BLOCK, |
1889 | &objfile->static_psymbols, | |
1890 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1891 | cu->language, objfile); |
c906108c SS |
1892 | } |
1893 | break; | |
1894 | case DW_TAG_variable: | |
1895 | if (pdi->is_external) | |
1896 | { | |
1897 | /* Global Variable. | |
1898 | Don't enter into the minimal symbol tables as there is | |
1899 | a minimal symbol table entry from the ELF symbols already. | |
1900 | Enter into partial symbol table if it has a location | |
1901 | descriptor or a type. | |
1902 | If the location descriptor is missing, new_symbol will create | |
1903 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1904 | be determined from the minimal symbol table whenever the variable | |
1905 | is referenced. | |
1906 | The address for the partial symbol table entry is not | |
1907 | used by GDB, but it comes in handy for debugging partial symbol | |
1908 | table building. */ | |
1909 | ||
1910 | if (pdi->locdesc) | |
e7c27a73 | 1911 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1912 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1913 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1914 | VAR_DOMAIN, LOC_STATIC, |
1915 | &objfile->global_psymbols, | |
1916 | 0, addr + baseaddr, | |
e142c38c | 1917 | cu->language, objfile); |
c906108c SS |
1918 | } |
1919 | else | |
1920 | { | |
1921 | /* Static Variable. Skip symbols without location descriptors. */ | |
1922 | if (pdi->locdesc == NULL) | |
1923 | return; | |
e7c27a73 | 1924 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 1925 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 1926 | mst_file_data, objfile); */ |
38d518c9 | 1927 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1928 | VAR_DOMAIN, LOC_STATIC, |
1929 | &objfile->static_psymbols, | |
1930 | 0, addr + baseaddr, | |
e142c38c | 1931 | cu->language, objfile); |
c906108c SS |
1932 | } |
1933 | break; | |
1934 | case DW_TAG_typedef: | |
1935 | case DW_TAG_base_type: | |
a02abb62 | 1936 | case DW_TAG_subrange_type: |
38d518c9 | 1937 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1938 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 1939 | &objfile->static_psymbols, |
e142c38c | 1940 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1941 | break; |
72bf9492 DJ |
1942 | case DW_TAG_namespace: |
1943 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
1944 | VAR_DOMAIN, LOC_TYPEDEF, | |
1945 | &objfile->global_psymbols, | |
1946 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
1947 | break; | |
c906108c SS |
1948 | case DW_TAG_class_type: |
1949 | case DW_TAG_structure_type: | |
1950 | case DW_TAG_union_type: | |
1951 | case DW_TAG_enumeration_type: | |
1952 | /* Skip aggregate types without children, these are external | |
c5aa993b | 1953 | references. */ |
63d06c5c DC |
1954 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
1955 | static vs. global. */ | |
c906108c SS |
1956 | if (pdi->has_children == 0) |
1957 | return; | |
38d518c9 | 1958 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1959 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
1960 | (cu->language == language_cplus |
1961 | || cu->language == language_java) | |
63d06c5c DC |
1962 | ? &objfile->global_psymbols |
1963 | : &objfile->static_psymbols, | |
e142c38c | 1964 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1965 | |
987504bb JJ |
1966 | if (cu->language == language_cplus |
1967 | || cu->language == language_java) | |
c906108c | 1968 | { |
987504bb | 1969 | /* For C++ and Java, these implicitly act as typedefs as well. */ |
38d518c9 | 1970 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1971 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 1972 | &objfile->global_psymbols, |
e142c38c | 1973 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1974 | } |
1975 | break; | |
1976 | case DW_TAG_enumerator: | |
38d518c9 | 1977 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1978 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
1979 | (cu->language == language_cplus |
1980 | || cu->language == language_java) | |
f6fe98ef DJ |
1981 | ? &objfile->global_psymbols |
1982 | : &objfile->static_psymbols, | |
e142c38c | 1983 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1984 | break; |
1985 | default: | |
1986 | break; | |
1987 | } | |
5c4e30ca DC |
1988 | |
1989 | /* Check to see if we should scan the name for possible namespace | |
1990 | info. Only do this if this is C++, if we don't have namespace | |
1991 | debugging info in the file, if the psym is of an appropriate type | |
1992 | (otherwise we'll have psym == NULL), and if we actually had a | |
1993 | mangled name to begin with. */ | |
1994 | ||
72bf9492 DJ |
1995 | /* FIXME drow/2004-02-22: Why don't we do this for classes, i.e. the |
1996 | cases which do not set PSYM above? */ | |
1997 | ||
e142c38c | 1998 | if (cu->language == language_cplus |
72bf9492 | 1999 | && cu->has_namespace_info == 0 |
5c4e30ca DC |
2000 | && psym != NULL |
2001 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
2002 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
2003 | objfile); | |
72bf9492 DJ |
2004 | |
2005 | if (built_actual_name) | |
2006 | xfree (actual_name); | |
c906108c SS |
2007 | } |
2008 | ||
72bf9492 DJ |
2009 | /* Determine whether a die of type TAG living in a C++ class or |
2010 | namespace needs to have the name of the scope prepended to the | |
63d06c5c DC |
2011 | name listed in the die. */ |
2012 | ||
2013 | static int | |
72bf9492 | 2014 | pdi_needs_namespace (enum dwarf_tag tag) |
63d06c5c | 2015 | { |
63d06c5c DC |
2016 | switch (tag) |
2017 | { | |
72bf9492 | 2018 | case DW_TAG_namespace: |
63d06c5c DC |
2019 | case DW_TAG_typedef: |
2020 | case DW_TAG_class_type: | |
2021 | case DW_TAG_structure_type: | |
2022 | case DW_TAG_union_type: | |
2023 | case DW_TAG_enumeration_type: | |
2024 | case DW_TAG_enumerator: | |
2025 | return 1; | |
2026 | default: | |
2027 | return 0; | |
2028 | } | |
2029 | } | |
2030 | ||
5c4e30ca DC |
2031 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2032 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2033 | the name of the enclosing namespace. */ | |
91c24f0a | 2034 | |
72bf9492 DJ |
2035 | static void |
2036 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2037 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
72bf9492 | 2038 | struct dwarf2_cu *cu) |
91c24f0a | 2039 | { |
e7c27a73 | 2040 | struct objfile *objfile = cu->objfile; |
5c4e30ca | 2041 | |
72bf9492 | 2042 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2043 | |
72bf9492 | 2044 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2045 | |
2046 | /* Now scan partial symbols in that namespace. */ | |
2047 | ||
91c24f0a | 2048 | if (pdi->has_children) |
72bf9492 | 2049 | scan_partial_symbols (pdi->die_child, lowpc, highpc, cu); |
91c24f0a DC |
2050 | } |
2051 | ||
72bf9492 DJ |
2052 | /* See if we can figure out if the class lives in a namespace. We do |
2053 | this by looking for a member function; its demangled name will | |
2054 | contain namespace info, if there is any. */ | |
63d06c5c | 2055 | |
72bf9492 DJ |
2056 | static void |
2057 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2058 | struct dwarf2_cu *cu) | |
63d06c5c | 2059 | { |
987504bb JJ |
2060 | if ((cu->language == language_cplus |
2061 | || cu->language == language_java) | |
72bf9492 | 2062 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2063 | && struct_pdi->has_children) |
2064 | { | |
63d06c5c DC |
2065 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2066 | what template types look like, because the demangler | |
2067 | frequently doesn't give the same name as the debug info. We | |
2068 | could fix this by only using the demangled name to get the | |
134d01f1 | 2069 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2070 | |
72bf9492 DJ |
2071 | struct partial_die_info *child_pdi = struct_pdi->die_child; |
2072 | struct partial_die_info *real_pdi; | |
5d51ca54 | 2073 | |
72bf9492 DJ |
2074 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2075 | we should not do this. We'll prepend the parent's fully qualified | |
2076 | name when we create the partial symbol. */ | |
5d51ca54 | 2077 | |
72bf9492 | 2078 | real_pdi = struct_pdi; |
72bf9492 | 2079 | while (real_pdi->has_specification) |
10b3939b | 2080 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2081 | |
72bf9492 DJ |
2082 | if (real_pdi->die_parent != NULL) |
2083 | return; | |
63d06c5c | 2084 | |
72bf9492 DJ |
2085 | while (child_pdi != NULL) |
2086 | { | |
2087 | if (child_pdi->tag == DW_TAG_subprogram) | |
63d06c5c | 2088 | { |
72bf9492 | 2089 | char *actual_class_name |
31c27f77 JJ |
2090 | = language_class_name_from_physname (cu->language_defn, |
2091 | child_pdi->name); | |
63d06c5c | 2092 | if (actual_class_name != NULL) |
72bf9492 DJ |
2093 | { |
2094 | struct_pdi->name | |
2095 | = obsavestring (actual_class_name, | |
2096 | strlen (actual_class_name), | |
2097 | &cu->comp_unit_obstack); | |
2098 | xfree (actual_class_name); | |
2099 | } | |
63d06c5c DC |
2100 | break; |
2101 | } | |
72bf9492 DJ |
2102 | |
2103 | child_pdi = child_pdi->die_sibling; | |
63d06c5c DC |
2104 | } |
2105 | } | |
63d06c5c DC |
2106 | } |
2107 | ||
91c24f0a DC |
2108 | /* Read a partial die corresponding to an enumeration type. */ |
2109 | ||
72bf9492 DJ |
2110 | static void |
2111 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2112 | struct dwarf2_cu *cu) | |
91c24f0a | 2113 | { |
e7c27a73 | 2114 | struct objfile *objfile = cu->objfile; |
91c24f0a | 2115 | bfd *abfd = objfile->obfd; |
72bf9492 | 2116 | struct partial_die_info *pdi; |
91c24f0a DC |
2117 | |
2118 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2119 | add_partial_symbol (enum_pdi, cu); |
2120 | ||
2121 | pdi = enum_pdi->die_child; | |
2122 | while (pdi) | |
91c24f0a | 2123 | { |
72bf9492 | 2124 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
91c24f0a DC |
2125 | complaint (&symfile_complaints, "malformed enumerator DIE ignored"); |
2126 | else | |
72bf9492 DJ |
2127 | add_partial_symbol (pdi, cu); |
2128 | pdi = pdi->die_sibling; | |
91c24f0a | 2129 | } |
91c24f0a DC |
2130 | } |
2131 | ||
4bb7a0a7 DJ |
2132 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2133 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2134 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2135 | the initial number. */ | |
2136 | ||
2137 | static struct abbrev_info * | |
2138 | peek_die_abbrev (char *info_ptr, int *bytes_read, struct dwarf2_cu *cu) | |
2139 | { | |
2140 | bfd *abfd = cu->objfile->obfd; | |
2141 | unsigned int abbrev_number; | |
2142 | struct abbrev_info *abbrev; | |
2143 | ||
2144 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2145 | ||
2146 | if (abbrev_number == 0) | |
2147 | return NULL; | |
2148 | ||
2149 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2150 | if (!abbrev) | |
2151 | { | |
2152 | error ("Dwarf Error: Could not find abbrev number %d [in module %s]", abbrev_number, | |
2153 | bfd_get_filename (abfd)); | |
2154 | } | |
2155 | ||
2156 | return abbrev; | |
2157 | } | |
2158 | ||
2159 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
2160 | pointer to the end of a series of DIEs, terminated by an empty | |
2161 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
2162 | ||
2163 | static char * | |
2164 | skip_children (char *info_ptr, struct dwarf2_cu *cu) | |
2165 | { | |
2166 | struct abbrev_info *abbrev; | |
2167 | unsigned int bytes_read; | |
2168 | ||
2169 | while (1) | |
2170 | { | |
2171 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2172 | if (abbrev == NULL) | |
2173 | return info_ptr + bytes_read; | |
2174 | else | |
2175 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
2176 | } | |
2177 | } | |
2178 | ||
2179 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
2180 | should point just after the initial uleb128 of a DIE, and the | |
2181 | abbrev corresponding to that skipped uleb128 should be passed in | |
2182 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2183 | children. */ | |
2184 | ||
2185 | static char * | |
2186 | skip_one_die (char *info_ptr, struct abbrev_info *abbrev, | |
2187 | struct dwarf2_cu *cu) | |
2188 | { | |
2189 | unsigned int bytes_read; | |
2190 | struct attribute attr; | |
2191 | bfd *abfd = cu->objfile->obfd; | |
2192 | unsigned int form, i; | |
2193 | ||
2194 | for (i = 0; i < abbrev->num_attrs; i++) | |
2195 | { | |
2196 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2197 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2198 | { | |
2199 | read_attribute (&attr, &abbrev->attrs[i], | |
2200 | abfd, info_ptr, cu); | |
2201 | if (attr.form == DW_FORM_ref_addr) | |
2202 | complaint (&symfile_complaints, "ignoring absolute DW_AT_sibling"); | |
2203 | else | |
6502dd73 DJ |
2204 | return dwarf2_per_objfile->info_buffer |
2205 | + dwarf2_get_ref_die_offset (&attr, cu); | |
4bb7a0a7 DJ |
2206 | } |
2207 | ||
2208 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2209 | form = abbrev->attrs[i].form; | |
2210 | skip_attribute: | |
2211 | switch (form) | |
2212 | { | |
2213 | case DW_FORM_addr: | |
2214 | case DW_FORM_ref_addr: | |
2215 | info_ptr += cu->header.addr_size; | |
2216 | break; | |
2217 | case DW_FORM_data1: | |
2218 | case DW_FORM_ref1: | |
2219 | case DW_FORM_flag: | |
2220 | info_ptr += 1; | |
2221 | break; | |
2222 | case DW_FORM_data2: | |
2223 | case DW_FORM_ref2: | |
2224 | info_ptr += 2; | |
2225 | break; | |
2226 | case DW_FORM_data4: | |
2227 | case DW_FORM_ref4: | |
2228 | info_ptr += 4; | |
2229 | break; | |
2230 | case DW_FORM_data8: | |
2231 | case DW_FORM_ref8: | |
2232 | info_ptr += 8; | |
2233 | break; | |
2234 | case DW_FORM_string: | |
2235 | read_string (abfd, info_ptr, &bytes_read); | |
2236 | info_ptr += bytes_read; | |
2237 | break; | |
2238 | case DW_FORM_strp: | |
2239 | info_ptr += cu->header.offset_size; | |
2240 | break; | |
2241 | case DW_FORM_block: | |
2242 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2243 | info_ptr += bytes_read; | |
2244 | break; | |
2245 | case DW_FORM_block1: | |
2246 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2247 | break; | |
2248 | case DW_FORM_block2: | |
2249 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2250 | break; | |
2251 | case DW_FORM_block4: | |
2252 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2253 | break; | |
2254 | case DW_FORM_sdata: | |
2255 | case DW_FORM_udata: | |
2256 | case DW_FORM_ref_udata: | |
2257 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2258 | break; | |
2259 | case DW_FORM_indirect: | |
2260 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2261 | info_ptr += bytes_read; | |
2262 | /* We need to continue parsing from here, so just go back to | |
2263 | the top. */ | |
2264 | goto skip_attribute; | |
2265 | ||
2266 | default: | |
2267 | error ("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]", | |
2268 | dwarf_form_name (form), | |
2269 | bfd_get_filename (abfd)); | |
2270 | } | |
2271 | } | |
2272 | ||
2273 | if (abbrev->has_children) | |
2274 | return skip_children (info_ptr, cu); | |
2275 | else | |
2276 | return info_ptr; | |
2277 | } | |
2278 | ||
2279 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
2280 | the next DIE after ORIG_PDI. */ | |
91c24f0a DC |
2281 | |
2282 | static char * | |
2283 | locate_pdi_sibling (struct partial_die_info *orig_pdi, char *info_ptr, | |
e7c27a73 | 2284 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2285 | { |
2286 | /* Do we know the sibling already? */ | |
72bf9492 | 2287 | |
91c24f0a DC |
2288 | if (orig_pdi->sibling) |
2289 | return orig_pdi->sibling; | |
2290 | ||
2291 | /* Are there any children to deal with? */ | |
2292 | ||
2293 | if (!orig_pdi->has_children) | |
2294 | return info_ptr; | |
2295 | ||
4bb7a0a7 | 2296 | /* Skip the children the long way. */ |
91c24f0a | 2297 | |
4bb7a0a7 | 2298 | return skip_children (info_ptr, cu); |
91c24f0a DC |
2299 | } |
2300 | ||
c906108c SS |
2301 | /* Expand this partial symbol table into a full symbol table. */ |
2302 | ||
2303 | static void | |
fba45db2 | 2304 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2305 | { |
2306 | /* FIXME: This is barely more than a stub. */ | |
2307 | if (pst != NULL) | |
2308 | { | |
2309 | if (pst->readin) | |
2310 | { | |
2311 | warning ("bug: psymtab for %s is already read in.", pst->filename); | |
2312 | } | |
2313 | else | |
2314 | { | |
2315 | if (info_verbose) | |
2316 | { | |
2317 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
2318 | gdb_flush (gdb_stdout); | |
2319 | } | |
2320 | ||
10b3939b DJ |
2321 | /* Restore our global data. */ |
2322 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2323 | dwarf2_objfile_data_key); | |
2324 | ||
c906108c SS |
2325 | psymtab_to_symtab_1 (pst); |
2326 | ||
2327 | /* Finish up the debug error message. */ | |
2328 | if (info_verbose) | |
2329 | printf_filtered ("done.\n"); | |
2330 | } | |
2331 | } | |
2332 | } | |
2333 | ||
10b3939b DJ |
2334 | /* Add PER_CU to the queue. */ |
2335 | ||
2336 | static void | |
2337 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2338 | { | |
2339 | struct dwarf2_queue_item *item; | |
2340 | ||
2341 | per_cu->queued = 1; | |
2342 | item = xmalloc (sizeof (*item)); | |
2343 | item->per_cu = per_cu; | |
2344 | item->next = NULL; | |
2345 | ||
2346 | if (dwarf2_queue == NULL) | |
2347 | dwarf2_queue = item; | |
2348 | else | |
2349 | dwarf2_queue_tail->next = item; | |
2350 | ||
2351 | dwarf2_queue_tail = item; | |
2352 | } | |
2353 | ||
2354 | /* Process the queue. */ | |
2355 | ||
2356 | static void | |
2357 | process_queue (struct objfile *objfile) | |
2358 | { | |
2359 | struct dwarf2_queue_item *item, *next_item; | |
2360 | ||
2361 | /* Initially, there is just one item on the queue. Load its DIEs, | |
2362 | and the DIEs of any other compilation units it requires, | |
2363 | transitively. */ | |
2364 | ||
2365 | for (item = dwarf2_queue; item != NULL; item = item->next) | |
2366 | { | |
2367 | /* Read in this compilation unit. This may add new items to | |
2368 | the end of the queue. */ | |
2369 | load_full_comp_unit (item->per_cu); | |
2370 | ||
2371 | item->per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
2372 | dwarf2_per_objfile->read_in_chain = item->per_cu; | |
2373 | ||
2374 | /* If this compilation unit has already had full symbols created, | |
2375 | reset the TYPE fields in each DIE. */ | |
2376 | if (item->per_cu->psymtab->readin) | |
2377 | reset_die_and_siblings_types (item->per_cu->cu->dies, | |
2378 | item->per_cu->cu); | |
2379 | } | |
2380 | ||
2381 | /* Now everything left on the queue needs to be read in. Process | |
2382 | them, one at a time, removing from the queue as we finish. */ | |
2383 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) | |
2384 | { | |
2385 | if (!item->per_cu->psymtab->readin) | |
2386 | process_full_comp_unit (item->per_cu); | |
2387 | ||
2388 | item->per_cu->queued = 0; | |
2389 | next_item = item->next; | |
2390 | xfree (item); | |
2391 | } | |
2392 | ||
2393 | dwarf2_queue_tail = NULL; | |
2394 | } | |
2395 | ||
2396 | /* Free all allocated queue entries. This function only releases anything if | |
2397 | an error was thrown; if the queue was processed then it would have been | |
2398 | freed as we went along. */ | |
2399 | ||
2400 | static void | |
2401 | dwarf2_release_queue (void *dummy) | |
2402 | { | |
2403 | struct dwarf2_queue_item *item, *last; | |
2404 | ||
2405 | item = dwarf2_queue; | |
2406 | while (item) | |
2407 | { | |
2408 | /* Anything still marked queued is likely to be in an | |
2409 | inconsistent state, so discard it. */ | |
2410 | if (item->per_cu->queued) | |
2411 | { | |
2412 | if (item->per_cu->cu != NULL) | |
2413 | free_one_cached_comp_unit (item->per_cu->cu); | |
2414 | item->per_cu->queued = 0; | |
2415 | } | |
2416 | ||
2417 | last = item; | |
2418 | item = item->next; | |
2419 | xfree (last); | |
2420 | } | |
2421 | ||
2422 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2423 | } | |
2424 | ||
2425 | /* Read in full symbols for PST, and anything it depends on. */ | |
2426 | ||
c906108c | 2427 | static void |
fba45db2 | 2428 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 2429 | { |
10b3939b | 2430 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 2431 | struct cleanup *back_to; |
aaa75496 JB |
2432 | int i; |
2433 | ||
2434 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2435 | if (!pst->dependencies[i]->readin) | |
2436 | { | |
2437 | /* Inform about additional files that need to be read in. */ | |
2438 | if (info_verbose) | |
2439 | { | |
2440 | fputs_filtered (" ", gdb_stdout); | |
2441 | wrap_here (""); | |
2442 | fputs_filtered ("and ", gdb_stdout); | |
2443 | wrap_here (""); | |
2444 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
2445 | wrap_here (""); /* Flush output */ | |
2446 | gdb_flush (gdb_stdout); | |
2447 | } | |
2448 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
2449 | } | |
2450 | ||
10b3939b DJ |
2451 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
2452 | ||
2453 | if (per_cu == NULL) | |
aaa75496 JB |
2454 | { |
2455 | /* It's an include file, no symbols to read for it. | |
2456 | Everything is in the parent symtab. */ | |
2457 | pst->readin = 1; | |
2458 | return; | |
2459 | } | |
c906108c | 2460 | |
10b3939b DJ |
2461 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2462 | ||
2463 | queue_comp_unit (per_cu); | |
2464 | ||
2465 | process_queue (pst->objfile); | |
2466 | ||
2467 | /* Age the cache, releasing compilation units that have not | |
2468 | been used recently. */ | |
2469 | age_cached_comp_units (); | |
2470 | ||
2471 | do_cleanups (back_to); | |
2472 | } | |
2473 | ||
2474 | /* Load the DIEs associated with PST and PER_CU into memory. */ | |
2475 | ||
2476 | static struct dwarf2_cu * | |
2477 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2478 | { | |
2479 | struct partial_symtab *pst = per_cu->psymtab; | |
2480 | bfd *abfd = pst->objfile->obfd; | |
2481 | struct dwarf2_cu *cu; | |
2482 | unsigned long offset; | |
2483 | char *info_ptr; | |
2484 | struct cleanup *back_to, *free_cu_cleanup; | |
2485 | struct attribute *attr; | |
2486 | CORE_ADDR baseaddr; | |
6502dd73 | 2487 | |
c906108c | 2488 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 2489 | offset = per_cu->offset; |
6502dd73 DJ |
2490 | |
2491 | info_ptr = dwarf2_per_objfile->info_buffer + offset; | |
63d06c5c | 2492 | |
10b3939b DJ |
2493 | cu = xmalloc (sizeof (struct dwarf2_cu)); |
2494 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
c906108c | 2495 | |
10b3939b DJ |
2496 | /* If an error occurs while loading, release our storage. */ |
2497 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 2498 | |
10b3939b | 2499 | cu->objfile = pst->objfile; |
e7c27a73 | 2500 | |
c906108c | 2501 | /* read in the comp_unit header */ |
10b3939b | 2502 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c SS |
2503 | |
2504 | /* Read the abbrevs for this compilation unit */ | |
10b3939b DJ |
2505 | dwarf2_read_abbrevs (abfd, cu); |
2506 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2507 | ||
2508 | cu->header.offset = offset; | |
c906108c | 2509 | |
10b3939b DJ |
2510 | cu->per_cu = per_cu; |
2511 | per_cu->cu = cu; | |
e142c38c | 2512 | |
10b3939b DJ |
2513 | /* We use this obstack for block values in dwarf_alloc_block. */ |
2514 | obstack_init (&cu->comp_unit_obstack); | |
2515 | ||
2516 | cu->dies = read_comp_unit (info_ptr, abfd, cu); | |
2517 | ||
2518 | /* We try not to read any attributes in this function, because not | |
2519 | all objfiles needed for references have been loaded yet, and symbol | |
2520 | table processing isn't initialized. But we have to set the CU language, | |
2521 | or we won't be able to build types correctly. */ | |
2522 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
2523 | if (attr) | |
2524 | set_cu_language (DW_UNSND (attr), cu); | |
2525 | else | |
2526 | set_cu_language (language_minimal, cu); | |
2527 | ||
2528 | do_cleanups (back_to); | |
e142c38c | 2529 | |
10b3939b DJ |
2530 | /* We've successfully allocated this compilation unit. Let our caller |
2531 | clean it up when finished with it. */ | |
2532 | discard_cleanups (free_cu_cleanup); | |
c906108c | 2533 | |
10b3939b DJ |
2534 | return cu; |
2535 | } | |
2536 | ||
2537 | /* Generate full symbol information for PST and CU, whose DIEs have | |
2538 | already been loaded into memory. */ | |
2539 | ||
2540 | static void | |
2541 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2542 | { | |
2543 | struct partial_symtab *pst = per_cu->psymtab; | |
2544 | struct dwarf2_cu *cu = per_cu->cu; | |
2545 | struct objfile *objfile = pst->objfile; | |
2546 | bfd *abfd = objfile->obfd; | |
2547 | CORE_ADDR lowpc, highpc; | |
2548 | struct symtab *symtab; | |
2549 | struct cleanup *back_to; | |
2550 | struct attribute *attr; | |
2551 | CORE_ADDR baseaddr; | |
2552 | ||
2553 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2554 | ||
2555 | /* We're in the global namespace. */ | |
2556 | processing_current_prefix = ""; | |
2557 | ||
2558 | buildsym_init (); | |
2559 | back_to = make_cleanup (really_free_pendings, NULL); | |
2560 | ||
2561 | cu->list_in_scope = &file_symbols; | |
c906108c | 2562 | |
0d53c4c4 DJ |
2563 | /* Find the base address of the compilation unit for range lists and |
2564 | location lists. It will normally be specified by DW_AT_low_pc. | |
2565 | In DWARF-3 draft 4, the base address could be overridden by | |
2566 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2567 | compilation units with discontinuous ranges. */ | |
2568 | ||
10b3939b DJ |
2569 | cu->header.base_known = 0; |
2570 | cu->header.base_address = 0; | |
0d53c4c4 | 2571 | |
10b3939b | 2572 | attr = dwarf2_attr (cu->dies, DW_AT_entry_pc, cu); |
0d53c4c4 DJ |
2573 | if (attr) |
2574 | { | |
10b3939b DJ |
2575 | cu->header.base_address = DW_ADDR (attr); |
2576 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2577 | } |
2578 | else | |
2579 | { | |
10b3939b | 2580 | attr = dwarf2_attr (cu->dies, DW_AT_low_pc, cu); |
0d53c4c4 DJ |
2581 | if (attr) |
2582 | { | |
10b3939b DJ |
2583 | cu->header.base_address = DW_ADDR (attr); |
2584 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2585 | } |
2586 | } | |
2587 | ||
c906108c | 2588 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 2589 | process_die (cu->dies, cu); |
c906108c | 2590 | |
fae299cd DC |
2591 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
2592 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
2593 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 2594 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 2595 | |
613e1657 | 2596 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2597 | |
2598 | /* Set symtab language to language from DW_AT_language. | |
2599 | If the compilation is from a C file generated by language preprocessors, | |
2600 | do not set the language if it was already deduced by start_subfile. */ | |
2601 | if (symtab != NULL | |
10b3939b | 2602 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 2603 | { |
10b3939b | 2604 | symtab->language = cu->language; |
c906108c SS |
2605 | } |
2606 | pst->symtab = symtab; | |
2607 | pst->readin = 1; | |
c906108c SS |
2608 | |
2609 | do_cleanups (back_to); | |
2610 | } | |
2611 | ||
2612 | /* Process a die and its children. */ | |
2613 | ||
2614 | static void | |
e7c27a73 | 2615 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2616 | { |
2617 | switch (die->tag) | |
2618 | { | |
2619 | case DW_TAG_padding: | |
2620 | break; | |
2621 | case DW_TAG_compile_unit: | |
e7c27a73 | 2622 | read_file_scope (die, cu); |
c906108c SS |
2623 | break; |
2624 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
2625 | read_subroutine_type (die, cu); |
2626 | read_func_scope (die, cu); | |
c906108c SS |
2627 | break; |
2628 | case DW_TAG_inlined_subroutine: | |
2629 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2630 | They could be used to set breakpoints on all inlined instances |
2631 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2632 | break; |
2633 | case DW_TAG_lexical_block: | |
14898363 L |
2634 | case DW_TAG_try_block: |
2635 | case DW_TAG_catch_block: | |
e7c27a73 | 2636 | read_lexical_block_scope (die, cu); |
c906108c SS |
2637 | break; |
2638 | case DW_TAG_class_type: | |
2639 | case DW_TAG_structure_type: | |
2640 | case DW_TAG_union_type: | |
134d01f1 DJ |
2641 | read_structure_type (die, cu); |
2642 | process_structure_scope (die, cu); | |
c906108c SS |
2643 | break; |
2644 | case DW_TAG_enumeration_type: | |
134d01f1 DJ |
2645 | read_enumeration_type (die, cu); |
2646 | process_enumeration_scope (die, cu); | |
c906108c | 2647 | break; |
134d01f1 DJ |
2648 | |
2649 | /* FIXME drow/2004-03-14: These initialize die->type, but do not create | |
2650 | a symbol or process any children. Therefore it doesn't do anything | |
2651 | that won't be done on-demand by read_type_die. */ | |
c906108c | 2652 | case DW_TAG_subroutine_type: |
e7c27a73 | 2653 | read_subroutine_type (die, cu); |
c906108c SS |
2654 | break; |
2655 | case DW_TAG_array_type: | |
e7c27a73 | 2656 | read_array_type (die, cu); |
c906108c SS |
2657 | break; |
2658 | case DW_TAG_pointer_type: | |
e7c27a73 | 2659 | read_tag_pointer_type (die, cu); |
c906108c SS |
2660 | break; |
2661 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 2662 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
2663 | break; |
2664 | case DW_TAG_reference_type: | |
e7c27a73 | 2665 | read_tag_reference_type (die, cu); |
c906108c SS |
2666 | break; |
2667 | case DW_TAG_string_type: | |
e7c27a73 | 2668 | read_tag_string_type (die, cu); |
c906108c | 2669 | break; |
134d01f1 DJ |
2670 | /* END FIXME */ |
2671 | ||
c906108c | 2672 | case DW_TAG_base_type: |
e7c27a73 | 2673 | read_base_type (die, cu); |
134d01f1 DJ |
2674 | /* Add a typedef symbol for the type definition, if it has a |
2675 | DW_AT_name. */ | |
2676 | new_symbol (die, die->type, cu); | |
c906108c | 2677 | break; |
a02abb62 JB |
2678 | case DW_TAG_subrange_type: |
2679 | read_subrange_type (die, cu); | |
134d01f1 DJ |
2680 | /* Add a typedef symbol for the type definition, if it has a |
2681 | DW_AT_name. */ | |
2682 | new_symbol (die, die->type, cu); | |
a02abb62 | 2683 | break; |
c906108c | 2684 | case DW_TAG_common_block: |
e7c27a73 | 2685 | read_common_block (die, cu); |
c906108c SS |
2686 | break; |
2687 | case DW_TAG_common_inclusion: | |
2688 | break; | |
d9fa45fe | 2689 | case DW_TAG_namespace: |
63d06c5c | 2690 | processing_has_namespace_info = 1; |
e7c27a73 | 2691 | read_namespace (die, cu); |
d9fa45fe DC |
2692 | break; |
2693 | case DW_TAG_imported_declaration: | |
2694 | case DW_TAG_imported_module: | |
2695 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2696 | information contained in these. DW_TAG_imported_declaration | |
2697 | dies shouldn't have children; DW_TAG_imported_module dies | |
2698 | shouldn't in the C++ case, but conceivably could in the | |
2699 | Fortran case, so we'll have to replace this gdb_assert if | |
2700 | Fortran compilers start generating that info. */ | |
63d06c5c | 2701 | processing_has_namespace_info = 1; |
639d11d3 | 2702 | gdb_assert (die->child == NULL); |
d9fa45fe | 2703 | break; |
c906108c | 2704 | default: |
e7c27a73 | 2705 | new_symbol (die, NULL, cu); |
c906108c SS |
2706 | break; |
2707 | } | |
2708 | } | |
2709 | ||
5fb290d7 | 2710 | static void |
e142c38c | 2711 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2712 | { |
e142c38c | 2713 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2714 | } |
2715 | ||
c906108c | 2716 | static void |
e7c27a73 | 2717 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2718 | { |
e7c27a73 DJ |
2719 | struct objfile *objfile = cu->objfile; |
2720 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2721 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2722 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2723 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2724 | struct attribute *attr; | |
2725 | char *name = "<unknown>"; | |
2726 | char *comp_dir = NULL; | |
2727 | struct die_info *child_die; | |
2728 | bfd *abfd = objfile->obfd; | |
debd256d | 2729 | struct line_header *line_header = 0; |
e142c38c DJ |
2730 | CORE_ADDR baseaddr; |
2731 | ||
2732 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2733 | |
fae299cd | 2734 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2735 | |
2736 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2737 | from finish_block. */ | |
2acceee2 | 2738 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2739 | lowpc = highpc; |
2740 | lowpc += baseaddr; | |
2741 | highpc += baseaddr; | |
2742 | ||
e142c38c | 2743 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2744 | if (attr) |
2745 | { | |
2746 | name = DW_STRING (attr); | |
2747 | } | |
e142c38c | 2748 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c SS |
2749 | if (attr) |
2750 | { | |
2751 | comp_dir = DW_STRING (attr); | |
2752 | if (comp_dir) | |
2753 | { | |
2754 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2755 | directory, get rid of it. */ | |
2756 | char *cp = strchr (comp_dir, ':'); | |
2757 | ||
2758 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
2759 | comp_dir = cp + 1; | |
2760 | } | |
2761 | } | |
2762 | ||
e142c38c | 2763 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2764 | if (attr) |
2765 | { | |
e142c38c | 2766 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2767 | } |
2768 | ||
b0f35d58 DL |
2769 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
2770 | if (attr) | |
2771 | cu->producer = DW_STRING (attr); | |
2772 | ||
c906108c SS |
2773 | /* We assume that we're processing GCC output. */ |
2774 | processing_gcc_compilation = 2; | |
2775 | #if 0 | |
c5aa993b JM |
2776 | /* FIXME:Do something here. */ |
2777 | if (dip->at_producer != NULL) | |
c906108c SS |
2778 | { |
2779 | handle_producer (dip->at_producer); | |
2780 | } | |
2781 | #endif | |
2782 | ||
2783 | /* The compilation unit may be in a different language or objfile, | |
2784 | zero out all remembered fundamental types. */ | |
e142c38c | 2785 | memset (cu->ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *)); |
c906108c SS |
2786 | |
2787 | start_symtab (name, comp_dir, lowpc); | |
2788 | record_debugformat ("DWARF 2"); | |
2789 | ||
e142c38c | 2790 | initialize_cu_func_list (cu); |
c906108c SS |
2791 | |
2792 | /* Process all dies in compilation unit. */ | |
639d11d3 | 2793 | if (die->child != NULL) |
c906108c | 2794 | { |
639d11d3 | 2795 | child_die = die->child; |
c906108c SS |
2796 | while (child_die && child_die->tag) |
2797 | { | |
e7c27a73 | 2798 | process_die (child_die, cu); |
c906108c SS |
2799 | child_die = sibling_die (child_die); |
2800 | } | |
2801 | } | |
5fb290d7 DJ |
2802 | |
2803 | /* Decode line number information if present. */ | |
e142c38c | 2804 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2805 | if (attr) |
2806 | { | |
debd256d | 2807 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2808 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2809 | if (line_header) |
2810 | { | |
2811 | make_cleanup ((make_cleanup_ftype *) free_line_header, | |
2812 | (void *) line_header); | |
aaa75496 | 2813 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 2814 | } |
5fb290d7 | 2815 | } |
debd256d | 2816 | |
2e276125 JB |
2817 | /* Decode macro information, if present. Dwarf 2 macro information |
2818 | refers to information in the line number info statement program | |
2819 | header, so we can only read it if we've read the header | |
2820 | successfully. */ | |
e142c38c | 2821 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2822 | if (attr && line_header) |
2e276125 JB |
2823 | { |
2824 | unsigned int macro_offset = DW_UNSND (attr); | |
2825 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2826 | comp_dir, abfd, cu); |
2e276125 | 2827 | } |
debd256d | 2828 | do_cleanups (back_to); |
5fb290d7 DJ |
2829 | } |
2830 | ||
2831 | static void | |
e142c38c DJ |
2832 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2833 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2834 | { |
2835 | struct function_range *thisfn; | |
2836 | ||
2837 | thisfn = (struct function_range *) | |
7b5a2f43 | 2838 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
2839 | thisfn->name = name; |
2840 | thisfn->lowpc = lowpc; | |
2841 | thisfn->highpc = highpc; | |
2842 | thisfn->seen_line = 0; | |
2843 | thisfn->next = NULL; | |
2844 | ||
e142c38c DJ |
2845 | if (cu->last_fn == NULL) |
2846 | cu->first_fn = thisfn; | |
5fb290d7 | 2847 | else |
e142c38c | 2848 | cu->last_fn->next = thisfn; |
5fb290d7 | 2849 | |
e142c38c | 2850 | cu->last_fn = thisfn; |
c906108c SS |
2851 | } |
2852 | ||
2853 | static void | |
e7c27a73 | 2854 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2855 | { |
e7c27a73 | 2856 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2857 | struct context_stack *new; |
c906108c SS |
2858 | CORE_ADDR lowpc; |
2859 | CORE_ADDR highpc; | |
2860 | struct die_info *child_die; | |
2861 | struct attribute *attr; | |
2862 | char *name; | |
fdde2d81 DC |
2863 | const char *previous_prefix = processing_current_prefix; |
2864 | struct cleanup *back_to = NULL; | |
e142c38c | 2865 | CORE_ADDR baseaddr; |
c906108c | 2866 | |
e142c38c DJ |
2867 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2868 | ||
2869 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2870 | |
2871 | /* Ignore functions with missing or empty names and functions with | |
2872 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2873 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2874 | return; |
2875 | ||
987504bb JJ |
2876 | if (cu->language == language_cplus |
2877 | || cu->language == language_java) | |
fdde2d81 | 2878 | { |
086ed43d | 2879 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2880 | |
2a35147e JB |
2881 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2882 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2883 | given the code | |
2884 | ||
2885 | namespace N { | |
2886 | void foo() { | |
2887 | // Definition of N::foo. | |
2888 | } | |
2889 | } | |
2890 | ||
2891 | then we'll have a tree of DIEs like this: | |
2892 | ||
2893 | 1: DW_TAG_compile_unit | |
2894 | 2: DW_TAG_namespace // N | |
2895 | 3: DW_TAG_subprogram // declaration of N::foo | |
2896 | 4: DW_TAG_subprogram // definition of N::foo | |
2897 | DW_AT_specification // refers to die #3 | |
2898 | ||
2899 | Thus, when processing die #4, we have to pretend that we're | |
2900 | in the context of its DW_AT_specification, namely the contex | |
2901 | of die #3. */ | |
fdde2d81 DC |
2902 | |
2903 | if (spec_die != NULL) | |
2904 | { | |
e142c38c | 2905 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
2906 | processing_current_prefix = specification_prefix; |
2907 | back_to = make_cleanup (xfree, specification_prefix); | |
2908 | } | |
2909 | } | |
2910 | ||
c906108c SS |
2911 | lowpc += baseaddr; |
2912 | highpc += baseaddr; | |
2913 | ||
5fb290d7 | 2914 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 2915 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 2916 | |
c906108c | 2917 | new = push_context (0, lowpc); |
e7c27a73 | 2918 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 2919 | |
4cecd739 DJ |
2920 | /* If there is a location expression for DW_AT_frame_base, record |
2921 | it. */ | |
e142c38c | 2922 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 2923 | if (attr) |
c034e007 AC |
2924 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
2925 | expression is being recorded directly in the function's symbol | |
2926 | and not in a separate frame-base object. I guess this hack is | |
2927 | to avoid adding some sort of frame-base adjunct/annex to the | |
2928 | function's symbol :-(. The problem with doing this is that it | |
2929 | results in a function symbol with a location expression that | |
2930 | has nothing to do with the location of the function, ouch! The | |
2931 | relationship should be: a function's symbol has-a frame base; a | |
2932 | frame-base has-a location expression. */ | |
e7c27a73 | 2933 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 2934 | |
e142c38c | 2935 | cu->list_in_scope = &local_symbols; |
c906108c | 2936 | |
639d11d3 | 2937 | if (die->child != NULL) |
c906108c | 2938 | { |
639d11d3 | 2939 | child_die = die->child; |
c906108c SS |
2940 | while (child_die && child_die->tag) |
2941 | { | |
e7c27a73 | 2942 | process_die (child_die, cu); |
c906108c SS |
2943 | child_die = sibling_die (child_die); |
2944 | } | |
2945 | } | |
2946 | ||
2947 | new = pop_context (); | |
2948 | /* Make a block for the local symbols within. */ | |
2949 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2950 | lowpc, highpc, objfile); | |
208d8187 JB |
2951 | |
2952 | /* In C++, we can have functions nested inside functions (e.g., when | |
2953 | a function declares a class that has methods). This means that | |
2954 | when we finish processing a function scope, we may need to go | |
2955 | back to building a containing block's symbol lists. */ | |
2956 | local_symbols = new->locals; | |
2957 | param_symbols = new->params; | |
2958 | ||
921e78cf JB |
2959 | /* If we've finished processing a top-level function, subsequent |
2960 | symbols go in the file symbol list. */ | |
2961 | if (outermost_context_p ()) | |
e142c38c | 2962 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
2963 | |
2964 | processing_current_prefix = previous_prefix; | |
2965 | if (back_to != NULL) | |
2966 | do_cleanups (back_to); | |
c906108c SS |
2967 | } |
2968 | ||
2969 | /* Process all the DIES contained within a lexical block scope. Start | |
2970 | a new scope, process the dies, and then close the scope. */ | |
2971 | ||
2972 | static void | |
e7c27a73 | 2973 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2974 | { |
e7c27a73 | 2975 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2976 | struct context_stack *new; |
c906108c SS |
2977 | CORE_ADDR lowpc, highpc; |
2978 | struct die_info *child_die; | |
e142c38c DJ |
2979 | CORE_ADDR baseaddr; |
2980 | ||
2981 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2982 | |
2983 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
2984 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
2985 | as multiple lexical blocks? Handling children in a sane way would | |
2986 | be nasty. Might be easier to properly extend generic blocks to | |
2987 | describe ranges. */ | |
e7c27a73 | 2988 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2989 | return; |
2990 | lowpc += baseaddr; | |
2991 | highpc += baseaddr; | |
2992 | ||
2993 | push_context (0, lowpc); | |
639d11d3 | 2994 | if (die->child != NULL) |
c906108c | 2995 | { |
639d11d3 | 2996 | child_die = die->child; |
c906108c SS |
2997 | while (child_die && child_die->tag) |
2998 | { | |
e7c27a73 | 2999 | process_die (child_die, cu); |
c906108c SS |
3000 | child_die = sibling_die (child_die); |
3001 | } | |
3002 | } | |
3003 | new = pop_context (); | |
3004 | ||
3005 | if (local_symbols != NULL) | |
3006 | { | |
3007 | finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
3008 | highpc, objfile); | |
3009 | } | |
3010 | local_symbols = new->locals; | |
3011 | } | |
3012 | ||
af34e669 DJ |
3013 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
3014 | are present and valid, otherwise, return 0. Return -1 if the range is | |
3015 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 3016 | static int |
af34e669 | 3017 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 3018 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c | 3019 | { |
e7c27a73 DJ |
3020 | struct objfile *objfile = cu->objfile; |
3021 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 3022 | struct attribute *attr; |
af34e669 DJ |
3023 | bfd *obfd = objfile->obfd; |
3024 | CORE_ADDR low = 0; | |
3025 | CORE_ADDR high = 0; | |
3026 | int ret = 0; | |
c906108c | 3027 | |
e142c38c | 3028 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 3029 | if (attr) |
af34e669 DJ |
3030 | { |
3031 | high = DW_ADDR (attr); | |
e142c38c | 3032 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
3033 | if (attr) |
3034 | low = DW_ADDR (attr); | |
3035 | else | |
3036 | /* Found high w/o low attribute. */ | |
3037 | return 0; | |
3038 | ||
3039 | /* Found consecutive range of addresses. */ | |
3040 | ret = 1; | |
3041 | } | |
c906108c | 3042 | else |
af34e669 | 3043 | { |
e142c38c | 3044 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
3045 | if (attr != NULL) |
3046 | { | |
3047 | unsigned int addr_size = cu_header->addr_size; | |
3048 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3049 | /* Value of the DW_AT_ranges attribute is the offset in the | |
a604369a | 3050 | .debug_ranges section. */ |
af34e669 DJ |
3051 | unsigned int offset = DW_UNSND (attr); |
3052 | /* Base address selection entry. */ | |
0d53c4c4 DJ |
3053 | CORE_ADDR base; |
3054 | int found_base; | |
af34e669 | 3055 | int dummy; |
af34e669 DJ |
3056 | char *buffer; |
3057 | CORE_ADDR marker; | |
3058 | int low_set; | |
3059 | ||
0d53c4c4 DJ |
3060 | found_base = cu_header->base_known; |
3061 | base = cu_header->base_address; | |
a604369a | 3062 | |
6502dd73 | 3063 | if (offset >= dwarf2_per_objfile->ranges_size) |
a604369a KB |
3064 | { |
3065 | complaint (&symfile_complaints, | |
3066 | "Offset %d out of bounds for DW_AT_ranges attribute", | |
3067 | offset); | |
3068 | return 0; | |
3069 | } | |
6502dd73 | 3070 | buffer = dwarf2_per_objfile->ranges_buffer + offset; |
af34e669 | 3071 | |
af34e669 | 3072 | /* Read in the largest possible address. */ |
e7c27a73 | 3073 | marker = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
3074 | if ((marker & mask) == mask) |
3075 | { | |
3076 | /* If we found the largest possible address, then | |
3077 | read the base address. */ | |
e7c27a73 | 3078 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
3079 | buffer += 2 * addr_size; |
3080 | offset += 2 * addr_size; | |
3081 | found_base = 1; | |
3082 | } | |
3083 | ||
3084 | low_set = 0; | |
3085 | ||
3086 | while (1) | |
3087 | { | |
3088 | CORE_ADDR range_beginning, range_end; | |
3089 | ||
e7c27a73 | 3090 | range_beginning = read_address (obfd, buffer, cu, &dummy); |
af34e669 | 3091 | buffer += addr_size; |
e7c27a73 | 3092 | range_end = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
3093 | buffer += addr_size; |
3094 | offset += 2 * addr_size; | |
3095 | ||
3096 | /* An end of list marker is a pair of zero addresses. */ | |
3097 | if (range_beginning == 0 && range_end == 0) | |
3098 | /* Found the end of list entry. */ | |
3099 | break; | |
3100 | ||
3101 | /* Each base address selection entry is a pair of 2 values. | |
3102 | The first is the largest possible address, the second is | |
3103 | the base address. Check for a base address here. */ | |
3104 | if ((range_beginning & mask) == mask) | |
3105 | { | |
3106 | /* If we found the largest possible address, then | |
3107 | read the base address. */ | |
e7c27a73 | 3108 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
3109 | found_base = 1; |
3110 | continue; | |
3111 | } | |
3112 | ||
3113 | if (!found_base) | |
3114 | { | |
3115 | /* We have no valid base address for the ranges | |
3116 | data. */ | |
3117 | complaint (&symfile_complaints, | |
3118 | "Invalid .debug_ranges data (no base address)"); | |
3119 | return 0; | |
3120 | } | |
3121 | ||
8f05cde5 DJ |
3122 | range_beginning += base; |
3123 | range_end += base; | |
3124 | ||
af34e669 DJ |
3125 | /* FIXME: This is recording everything as a low-high |
3126 | segment of consecutive addresses. We should have a | |
3127 | data structure for discontiguous block ranges | |
3128 | instead. */ | |
3129 | if (! low_set) | |
3130 | { | |
3131 | low = range_beginning; | |
3132 | high = range_end; | |
3133 | low_set = 1; | |
3134 | } | |
3135 | else | |
3136 | { | |
3137 | if (range_beginning < low) | |
3138 | low = range_beginning; | |
3139 | if (range_end > high) | |
3140 | high = range_end; | |
3141 | } | |
3142 | } | |
3143 | ||
3144 | if (! low_set) | |
3145 | /* If the first entry is an end-of-list marker, the range | |
3146 | describes an empty scope, i.e. no instructions. */ | |
3147 | return 0; | |
3148 | ||
3149 | ret = -1; | |
3150 | } | |
3151 | } | |
c906108c SS |
3152 | |
3153 | if (high < low) | |
3154 | return 0; | |
3155 | ||
3156 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
3157 | eliminate duplicate copies of functions and vtables and such. | |
3158 | The linker will arbitrarily choose one and discard the others. | |
3159 | The AT_*_pc values for such functions refer to local labels in | |
3160 | these sections. If the section from that file was discarded, the | |
3161 | labels are not in the output, so the relocs get a value of 0. | |
3162 | If this is a discarded function, mark the pc bounds as invalid, | |
3163 | so that GDB will ignore it. */ | |
af34e669 | 3164 | if (low == 0 && (bfd_get_file_flags (obfd) & HAS_RELOC) == 0) |
c906108c SS |
3165 | return 0; |
3166 | ||
3167 | *lowpc = low; | |
3168 | *highpc = high; | |
af34e669 | 3169 | return ret; |
c906108c SS |
3170 | } |
3171 | ||
fae299cd DC |
3172 | /* Get the low and high pc's represented by the scope DIE, and store |
3173 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
3174 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
3175 | ||
3176 | static void | |
3177 | get_scope_pc_bounds (struct die_info *die, | |
3178 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3179 | struct dwarf2_cu *cu) | |
3180 | { | |
3181 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
3182 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
3183 | CORE_ADDR current_low, current_high; | |
3184 | ||
3185 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
3186 | { | |
3187 | best_low = current_low; | |
3188 | best_high = current_high; | |
3189 | } | |
3190 | else | |
3191 | { | |
3192 | struct die_info *child = die->child; | |
3193 | ||
3194 | while (child && child->tag) | |
3195 | { | |
3196 | switch (child->tag) { | |
3197 | case DW_TAG_subprogram: | |
3198 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
3199 | { | |
3200 | best_low = min (best_low, current_low); | |
3201 | best_high = max (best_high, current_high); | |
3202 | } | |
3203 | break; | |
3204 | case DW_TAG_namespace: | |
3205 | /* FIXME: carlton/2004-01-16: Should we do this for | |
3206 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
3207 | that current GCC's always emit the DIEs corresponding | |
3208 | to definitions of methods of classes as children of a | |
3209 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
3210 | the DIEs giving the declarations, which could be | |
3211 | anywhere). But I don't see any reason why the | |
3212 | standards says that they have to be there. */ | |
3213 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
3214 | ||
3215 | if (current_low != ((CORE_ADDR) -1)) | |
3216 | { | |
3217 | best_low = min (best_low, current_low); | |
3218 | best_high = max (best_high, current_high); | |
3219 | } | |
3220 | break; | |
3221 | default: | |
3222 | /* Ignore. */ | |
3223 | break; | |
3224 | } | |
3225 | ||
3226 | child = sibling_die (child); | |
3227 | } | |
3228 | } | |
3229 | ||
3230 | *lowpc = best_low; | |
3231 | *highpc = best_high; | |
3232 | } | |
3233 | ||
c906108c SS |
3234 | /* Add an aggregate field to the field list. */ |
3235 | ||
3236 | static void | |
107d2387 | 3237 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
3238 | struct dwarf2_cu *cu) |
3239 | { | |
3240 | struct objfile *objfile = cu->objfile; | |
c906108c SS |
3241 | struct nextfield *new_field; |
3242 | struct attribute *attr; | |
3243 | struct field *fp; | |
3244 | char *fieldname = ""; | |
3245 | ||
3246 | /* Allocate a new field list entry and link it in. */ | |
3247 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3248 | make_cleanup (xfree, new_field); |
c906108c SS |
3249 | memset (new_field, 0, sizeof (struct nextfield)); |
3250 | new_field->next = fip->fields; | |
3251 | fip->fields = new_field; | |
3252 | fip->nfields++; | |
3253 | ||
3254 | /* Handle accessibility and virtuality of field. | |
3255 | The default accessibility for members is public, the default | |
3256 | accessibility for inheritance is private. */ | |
3257 | if (die->tag != DW_TAG_inheritance) | |
3258 | new_field->accessibility = DW_ACCESS_public; | |
3259 | else | |
3260 | new_field->accessibility = DW_ACCESS_private; | |
3261 | new_field->virtuality = DW_VIRTUALITY_none; | |
3262 | ||
e142c38c | 3263 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3264 | if (attr) |
3265 | new_field->accessibility = DW_UNSND (attr); | |
3266 | if (new_field->accessibility != DW_ACCESS_public) | |
3267 | fip->non_public_fields = 1; | |
e142c38c | 3268 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
3269 | if (attr) |
3270 | new_field->virtuality = DW_UNSND (attr); | |
3271 | ||
3272 | fp = &new_field->field; | |
a9a9bd0f | 3273 | |
e142c38c | 3274 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 3275 | { |
a9a9bd0f DC |
3276 | /* Data member other than a C++ static data member. */ |
3277 | ||
c906108c | 3278 | /* Get type of field. */ |
e7c27a73 | 3279 | fp->type = die_type (die, cu); |
c906108c | 3280 | |
01ad7f36 DJ |
3281 | FIELD_STATIC_KIND (*fp) = 0; |
3282 | ||
c906108c | 3283 | /* Get bit size of field (zero if none). */ |
e142c38c | 3284 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
3285 | if (attr) |
3286 | { | |
3287 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
3288 | } | |
3289 | else | |
3290 | { | |
3291 | FIELD_BITSIZE (*fp) = 0; | |
3292 | } | |
3293 | ||
3294 | /* Get bit offset of field. */ | |
e142c38c | 3295 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
3296 | if (attr) |
3297 | { | |
3298 | FIELD_BITPOS (*fp) = | |
e7c27a73 | 3299 | decode_locdesc (DW_BLOCK (attr), cu) * bits_per_byte; |
c906108c SS |
3300 | } |
3301 | else | |
3302 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 3303 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
3304 | if (attr) |
3305 | { | |
3306 | if (BITS_BIG_ENDIAN) | |
3307 | { | |
3308 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
3309 | additional bit offset from the MSB of the containing |
3310 | anonymous object to the MSB of the field. We don't | |
3311 | have to do anything special since we don't need to | |
3312 | know the size of the anonymous object. */ | |
c906108c SS |
3313 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
3314 | } | |
3315 | else | |
3316 | { | |
3317 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
3318 | MSB of the anonymous object, subtract off the number of |
3319 | bits from the MSB of the field to the MSB of the | |
3320 | object, and then subtract off the number of bits of | |
3321 | the field itself. The result is the bit offset of | |
3322 | the LSB of the field. */ | |
c906108c SS |
3323 | int anonymous_size; |
3324 | int bit_offset = DW_UNSND (attr); | |
3325 | ||
e142c38c | 3326 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3327 | if (attr) |
3328 | { | |
3329 | /* The size of the anonymous object containing | |
3330 | the bit field is explicit, so use the | |
3331 | indicated size (in bytes). */ | |
3332 | anonymous_size = DW_UNSND (attr); | |
3333 | } | |
3334 | else | |
3335 | { | |
3336 | /* The size of the anonymous object containing | |
3337 | the bit field must be inferred from the type | |
3338 | attribute of the data member containing the | |
3339 | bit field. */ | |
3340 | anonymous_size = TYPE_LENGTH (fp->type); | |
3341 | } | |
3342 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
3343 | - bit_offset - FIELD_BITSIZE (*fp); | |
3344 | } | |
3345 | } | |
3346 | ||
3347 | /* Get name of field. */ | |
e142c38c | 3348 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3349 | if (attr && DW_STRING (attr)) |
3350 | fieldname = DW_STRING (attr); | |
d8151005 DJ |
3351 | |
3352 | /* The name is already allocated along with this objfile, so we don't | |
3353 | need to duplicate it for the type. */ | |
3354 | fp->name = fieldname; | |
c906108c SS |
3355 | |
3356 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 3357 | pointer or virtual base class pointer) to private. */ |
e142c38c | 3358 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
3359 | { |
3360 | new_field->accessibility = DW_ACCESS_private; | |
3361 | fip->non_public_fields = 1; | |
3362 | } | |
3363 | } | |
a9a9bd0f | 3364 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 3365 | { |
a9a9bd0f DC |
3366 | /* C++ static member. */ |
3367 | ||
3368 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
3369 | is a declaration, but all versions of G++ as of this writing | |
3370 | (so through at least 3.2.1) incorrectly generate | |
3371 | DW_TAG_variable tags. */ | |
3372 | ||
c906108c | 3373 | char *physname; |
c906108c | 3374 | |
a9a9bd0f | 3375 | /* Get name of field. */ |
e142c38c | 3376 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
3377 | if (attr && DW_STRING (attr)) |
3378 | fieldname = DW_STRING (attr); | |
3379 | else | |
c906108c SS |
3380 | return; |
3381 | ||
2df3850c | 3382 | /* Get physical name. */ |
e142c38c | 3383 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 3384 | |
d8151005 DJ |
3385 | /* The name is already allocated along with this objfile, so we don't |
3386 | need to duplicate it for the type. */ | |
3387 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 3388 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 3389 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
3390 | } |
3391 | else if (die->tag == DW_TAG_inheritance) | |
3392 | { | |
3393 | /* C++ base class field. */ | |
e142c38c | 3394 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 3395 | if (attr) |
e7c27a73 | 3396 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 3397 | * bits_per_byte); |
c906108c | 3398 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 3399 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 3400 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
3401 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
3402 | fip->nbaseclasses++; | |
3403 | } | |
3404 | } | |
3405 | ||
3406 | /* Create the vector of fields, and attach it to the type. */ | |
3407 | ||
3408 | static void | |
fba45db2 | 3409 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3410 | struct dwarf2_cu *cu) |
c906108c SS |
3411 | { |
3412 | int nfields = fip->nfields; | |
3413 | ||
3414 | /* Record the field count, allocate space for the array of fields, | |
3415 | and create blank accessibility bitfields if necessary. */ | |
3416 | TYPE_NFIELDS (type) = nfields; | |
3417 | TYPE_FIELDS (type) = (struct field *) | |
3418 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3419 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3420 | ||
3421 | if (fip->non_public_fields) | |
3422 | { | |
3423 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3424 | ||
3425 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3426 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3427 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3428 | ||
3429 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3430 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3431 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3432 | ||
3433 | TYPE_FIELD_IGNORE_BITS (type) = | |
3434 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3435 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3436 | } | |
3437 | ||
3438 | /* If the type has baseclasses, allocate and clear a bit vector for | |
3439 | TYPE_FIELD_VIRTUAL_BITS. */ | |
3440 | if (fip->nbaseclasses) | |
3441 | { | |
3442 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
3443 | char *pointer; | |
3444 | ||
3445 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3446 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
3447 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
3448 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); | |
3449 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
3450 | } | |
3451 | ||
3452 | /* Copy the saved-up fields into the field vector. Start from the head | |
3453 | of the list, adding to the tail of the field array, so that they end | |
3454 | up in the same order in the array in which they were added to the list. */ | |
3455 | while (nfields-- > 0) | |
3456 | { | |
3457 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
3458 | switch (fip->fields->accessibility) | |
3459 | { | |
c5aa993b JM |
3460 | case DW_ACCESS_private: |
3461 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3462 | break; | |
c906108c | 3463 | |
c5aa993b JM |
3464 | case DW_ACCESS_protected: |
3465 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3466 | break; | |
c906108c | 3467 | |
c5aa993b JM |
3468 | case DW_ACCESS_public: |
3469 | break; | |
c906108c | 3470 | |
c5aa993b JM |
3471 | default: |
3472 | /* Unknown accessibility. Complain and treat it as public. */ | |
3473 | { | |
4d3c2250 KB |
3474 | complaint (&symfile_complaints, "unsupported accessibility %d", |
3475 | fip->fields->accessibility); | |
c5aa993b JM |
3476 | } |
3477 | break; | |
c906108c SS |
3478 | } |
3479 | if (nfields < fip->nbaseclasses) | |
3480 | { | |
3481 | switch (fip->fields->virtuality) | |
3482 | { | |
c5aa993b JM |
3483 | case DW_VIRTUALITY_virtual: |
3484 | case DW_VIRTUALITY_pure_virtual: | |
3485 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
3486 | break; | |
c906108c SS |
3487 | } |
3488 | } | |
3489 | fip->fields = fip->fields->next; | |
3490 | } | |
3491 | } | |
3492 | ||
c906108c SS |
3493 | /* Add a member function to the proper fieldlist. */ |
3494 | ||
3495 | static void | |
107d2387 | 3496 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 3497 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 3498 | { |
e7c27a73 | 3499 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3500 | struct attribute *attr; |
3501 | struct fnfieldlist *flp; | |
3502 | int i; | |
3503 | struct fn_field *fnp; | |
3504 | char *fieldname; | |
3505 | char *physname; | |
3506 | struct nextfnfield *new_fnfield; | |
3507 | ||
2df3850c | 3508 | /* Get name of member function. */ |
e142c38c | 3509 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
3510 | if (attr && DW_STRING (attr)) |
3511 | fieldname = DW_STRING (attr); | |
c906108c | 3512 | else |
2df3850c | 3513 | return; |
c906108c | 3514 | |
2df3850c | 3515 | /* Get the mangled name. */ |
e142c38c | 3516 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
3517 | |
3518 | /* Look up member function name in fieldlist. */ | |
3519 | for (i = 0; i < fip->nfnfields; i++) | |
3520 | { | |
27bfe10e | 3521 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
3522 | break; |
3523 | } | |
3524 | ||
3525 | /* Create new list element if necessary. */ | |
3526 | if (i < fip->nfnfields) | |
3527 | flp = &fip->fnfieldlists[i]; | |
3528 | else | |
3529 | { | |
3530 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3531 | { | |
3532 | fip->fnfieldlists = (struct fnfieldlist *) | |
3533 | xrealloc (fip->fnfieldlists, | |
3534 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3535 | * sizeof (struct fnfieldlist)); |
c906108c | 3536 | if (fip->nfnfields == 0) |
c13c43fd | 3537 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
3538 | } |
3539 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
3540 | flp->name = fieldname; | |
3541 | flp->length = 0; | |
3542 | flp->head = NULL; | |
3543 | fip->nfnfields++; | |
3544 | } | |
3545 | ||
3546 | /* Create a new member function field and chain it to the field list | |
3547 | entry. */ | |
3548 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 3549 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
3550 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
3551 | new_fnfield->next = flp->head; | |
3552 | flp->head = new_fnfield; | |
3553 | flp->length++; | |
3554 | ||
3555 | /* Fill in the member function field info. */ | |
3556 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
3557 | /* The name is already allocated along with this objfile, so we don't |
3558 | need to duplicate it for the type. */ | |
3559 | fnp->physname = physname ? physname : ""; | |
c906108c SS |
3560 | fnp->type = alloc_type (objfile); |
3561 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
3562 | { | |
c906108c | 3563 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 3564 | |
e26fb1d7 DC |
3565 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
3566 | of the method itself (TYPE_CODE_METHOD). */ | |
3567 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
3568 | TYPE_TARGET_TYPE (die->type), |
3569 | TYPE_FIELDS (die->type), | |
3570 | TYPE_NFIELDS (die->type), | |
3571 | TYPE_VARARGS (die->type)); | |
c906108c SS |
3572 | |
3573 | /* Handle static member functions. | |
c5aa993b JM |
3574 | Dwarf2 has no clean way to discern C++ static and non-static |
3575 | member functions. G++ helps GDB by marking the first | |
3576 | parameter for non-static member functions (which is the | |
3577 | this pointer) as artificial. We obtain this information | |
3578 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
3579 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
3580 | fnp->voffset = VOFFSET_STATIC; | |
3581 | } | |
3582 | else | |
4d3c2250 KB |
3583 | complaint (&symfile_complaints, "member function type missing for '%s'", |
3584 | physname); | |
c906108c SS |
3585 | |
3586 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 3587 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 3588 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
3589 | |
3590 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
3591 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
3592 | ||
3593 | /* Get accessibility. */ | |
e142c38c | 3594 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3595 | if (attr) |
3596 | { | |
3597 | switch (DW_UNSND (attr)) | |
3598 | { | |
c5aa993b JM |
3599 | case DW_ACCESS_private: |
3600 | fnp->is_private = 1; | |
3601 | break; | |
3602 | case DW_ACCESS_protected: | |
3603 | fnp->is_protected = 1; | |
3604 | break; | |
c906108c SS |
3605 | } |
3606 | } | |
3607 | ||
b02dede2 | 3608 | /* Check for artificial methods. */ |
e142c38c | 3609 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3610 | if (attr && DW_UNSND (attr) != 0) |
3611 | fnp->is_artificial = 1; | |
3612 | ||
c906108c | 3613 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3614 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3615 | if (attr) |
8e19ed76 PS |
3616 | { |
3617 | /* Support the .debug_loc offsets */ | |
3618 | if (attr_form_is_block (attr)) | |
3619 | { | |
e7c27a73 | 3620 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 PS |
3621 | } |
3622 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3623 | { | |
4d3c2250 | 3624 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3625 | } |
3626 | else | |
3627 | { | |
4d3c2250 KB |
3628 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3629 | fieldname); | |
8e19ed76 PS |
3630 | } |
3631 | } | |
c906108c SS |
3632 | } |
3633 | ||
3634 | /* Create the vector of member function fields, and attach it to the type. */ | |
3635 | ||
3636 | static void | |
fba45db2 | 3637 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3638 | struct dwarf2_cu *cu) |
c906108c SS |
3639 | { |
3640 | struct fnfieldlist *flp; | |
3641 | int total_length = 0; | |
3642 | int i; | |
3643 | ||
3644 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3645 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
3646 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
3647 | ||
3648 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
3649 | { | |
3650 | struct nextfnfield *nfp = flp->head; | |
3651 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
3652 | int k; | |
3653 | ||
3654 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
3655 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
3656 | fn_flp->fn_fields = (struct fn_field *) | |
3657 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
3658 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 3659 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
3660 | |
3661 | total_length += flp->length; | |
3662 | } | |
3663 | ||
3664 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
3665 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
3666 | } | |
3667 | ||
1168df01 JB |
3668 | |
3669 | /* Returns non-zero if NAME is the name of a vtable member in CU's | |
3670 | language, zero otherwise. */ | |
3671 | static int | |
3672 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
3673 | { | |
3674 | static const char vptr[] = "_vptr"; | |
987504bb | 3675 | static const char vtable[] = "vtable"; |
1168df01 | 3676 | |
987504bb JJ |
3677 | /* Look for the C++ and Java forms of the vtable. */ |
3678 | if ((cu->language == language_java | |
3679 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
3680 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
3681 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
3682 | return 1; |
3683 | ||
3684 | return 0; | |
3685 | } | |
3686 | ||
3687 | ||
c906108c SS |
3688 | /* Called when we find the DIE that starts a structure or union scope |
3689 | (definition) to process all dies that define the members of the | |
3690 | structure or union. | |
3691 | ||
3692 | NOTE: we need to call struct_type regardless of whether or not the | |
3693 | DIE has an at_name attribute, since it might be an anonymous | |
3694 | structure or union. This gets the type entered into our set of | |
3695 | user defined types. | |
3696 | ||
3697 | However, if the structure is incomplete (an opaque struct/union) | |
3698 | then suppress creating a symbol table entry for it since gdb only | |
3699 | wants to find the one with the complete definition. Note that if | |
3700 | it is complete, we just call new_symbol, which does it's own | |
3701 | checking about whether the struct/union is anonymous or not (and | |
3702 | suppresses creating a symbol table entry itself). */ | |
3703 | ||
3704 | static void | |
134d01f1 | 3705 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3706 | { |
e7c27a73 | 3707 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3708 | struct type *type; |
3709 | struct attribute *attr; | |
63d06c5c DC |
3710 | const char *previous_prefix = processing_current_prefix; |
3711 | struct cleanup *back_to = NULL; | |
c906108c | 3712 | |
134d01f1 DJ |
3713 | if (die->type) |
3714 | return; | |
3715 | ||
c906108c SS |
3716 | type = alloc_type (objfile); |
3717 | ||
3718 | INIT_CPLUS_SPECIFIC (type); | |
e142c38c | 3719 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3720 | if (attr && DW_STRING (attr)) |
3721 | { | |
987504bb JJ |
3722 | if (cu->language == language_cplus |
3723 | || cu->language == language_java) | |
63d06c5c | 3724 | { |
8176b9b8 DC |
3725 | char *new_prefix = determine_class_name (die, cu); |
3726 | TYPE_TAG_NAME (type) = obsavestring (new_prefix, | |
3727 | strlen (new_prefix), | |
3728 | &objfile->objfile_obstack); | |
3729 | back_to = make_cleanup (xfree, new_prefix); | |
63d06c5c DC |
3730 | processing_current_prefix = new_prefix; |
3731 | } | |
3732 | else | |
3733 | { | |
d8151005 DJ |
3734 | /* The name is already allocated along with this objfile, so |
3735 | we don't need to duplicate it for the type. */ | |
8176b9b8 | 3736 | TYPE_TAG_NAME (type) = DW_STRING (attr); |
63d06c5c | 3737 | } |
c906108c SS |
3738 | } |
3739 | ||
3740 | if (die->tag == DW_TAG_structure_type) | |
3741 | { | |
3742 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
3743 | } | |
3744 | else if (die->tag == DW_TAG_union_type) | |
3745 | { | |
3746 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
3747 | } | |
3748 | else | |
3749 | { | |
3750 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 3751 | in gdbtypes.h. */ |
c906108c SS |
3752 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
3753 | } | |
3754 | ||
e142c38c | 3755 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3756 | if (attr) |
3757 | { | |
3758 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3759 | } | |
3760 | else | |
3761 | { | |
3762 | TYPE_LENGTH (type) = 0; | |
3763 | } | |
3764 | ||
dc718098 JB |
3765 | if (die_is_declaration (die, cu)) |
3766 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
3767 | ||
c906108c SS |
3768 | /* We need to add the type field to the die immediately so we don't |
3769 | infinitely recurse when dealing with pointers to the structure | |
3770 | type within the structure itself. */ | |
1c379e20 | 3771 | set_die_type (die, type, cu); |
c906108c | 3772 | |
e142c38c | 3773 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
3774 | { |
3775 | struct field_info fi; | |
3776 | struct die_info *child_die; | |
3777 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
3778 | ||
3779 | memset (&fi, 0, sizeof (struct field_info)); | |
3780 | ||
639d11d3 | 3781 | child_die = die->child; |
c906108c SS |
3782 | |
3783 | while (child_die && child_die->tag) | |
3784 | { | |
a9a9bd0f DC |
3785 | if (child_die->tag == DW_TAG_member |
3786 | || child_die->tag == DW_TAG_variable) | |
c906108c | 3787 | { |
a9a9bd0f DC |
3788 | /* NOTE: carlton/2002-11-05: A C++ static data member |
3789 | should be a DW_TAG_member that is a declaration, but | |
3790 | all versions of G++ as of this writing (so through at | |
3791 | least 3.2.1) incorrectly generate DW_TAG_variable | |
3792 | tags for them instead. */ | |
e7c27a73 | 3793 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3794 | } |
8713b1b1 | 3795 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
3796 | { |
3797 | /* C++ member function. */ | |
134d01f1 | 3798 | read_type_die (child_die, cu); |
e7c27a73 | 3799 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
3800 | } |
3801 | else if (child_die->tag == DW_TAG_inheritance) | |
3802 | { | |
3803 | /* C++ base class field. */ | |
e7c27a73 | 3804 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3805 | } |
c906108c SS |
3806 | child_die = sibling_die (child_die); |
3807 | } | |
3808 | ||
3809 | /* Attach fields and member functions to the type. */ | |
3810 | if (fi.nfields) | |
e7c27a73 | 3811 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
3812 | if (fi.nfnfields) |
3813 | { | |
e7c27a73 | 3814 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 3815 | |
c5aa993b | 3816 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
3817 | class itself) which contains the vtable pointer for the current |
3818 | class from the DW_AT_containing_type attribute. */ | |
3819 | ||
e142c38c | 3820 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 3821 | { |
e7c27a73 | 3822 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
3823 | |
3824 | TYPE_VPTR_BASETYPE (type) = t; | |
3825 | if (type == t) | |
3826 | { | |
c906108c SS |
3827 | int i; |
3828 | ||
3829 | /* Our own class provides vtbl ptr. */ | |
3830 | for (i = TYPE_NFIELDS (t) - 1; | |
3831 | i >= TYPE_N_BASECLASSES (t); | |
3832 | --i) | |
3833 | { | |
3834 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
3835 | ||
1168df01 | 3836 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
3837 | { |
3838 | TYPE_VPTR_FIELDNO (type) = i; | |
3839 | break; | |
3840 | } | |
3841 | } | |
3842 | ||
3843 | /* Complain if virtual function table field not found. */ | |
3844 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 KB |
3845 | complaint (&symfile_complaints, |
3846 | "virtual function table pointer not found when defining class '%s'", | |
3847 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : | |
3848 | ""); | |
c906108c SS |
3849 | } |
3850 | else | |
3851 | { | |
3852 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3853 | } | |
3854 | } | |
3855 | } | |
3856 | ||
c906108c SS |
3857 | do_cleanups (back_to); |
3858 | } | |
63d06c5c DC |
3859 | |
3860 | processing_current_prefix = previous_prefix; | |
3861 | if (back_to != NULL) | |
3862 | do_cleanups (back_to); | |
c906108c SS |
3863 | } |
3864 | ||
134d01f1 DJ |
3865 | static void |
3866 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
3867 | { | |
3868 | struct objfile *objfile = cu->objfile; | |
3869 | const char *previous_prefix = processing_current_prefix; | |
90aeadfc | 3870 | struct die_info *child_die = die->child; |
c906108c | 3871 | |
134d01f1 DJ |
3872 | if (TYPE_TAG_NAME (die->type) != NULL) |
3873 | processing_current_prefix = TYPE_TAG_NAME (die->type); | |
c906108c | 3874 | |
90aeadfc DC |
3875 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
3876 | snapshots) has been known to create a die giving a declaration | |
3877 | for a class that has, as a child, a die giving a definition for a | |
3878 | nested class. So we have to process our children even if the | |
3879 | current die is a declaration. Normally, of course, a declaration | |
3880 | won't have any children at all. */ | |
134d01f1 | 3881 | |
90aeadfc DC |
3882 | while (child_die != NULL && child_die->tag) |
3883 | { | |
3884 | if (child_die->tag == DW_TAG_member | |
3885 | || child_die->tag == DW_TAG_variable | |
3886 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 3887 | { |
90aeadfc | 3888 | /* Do nothing. */ |
134d01f1 | 3889 | } |
90aeadfc DC |
3890 | else |
3891 | process_die (child_die, cu); | |
134d01f1 | 3892 | |
90aeadfc | 3893 | child_die = sibling_die (child_die); |
134d01f1 DJ |
3894 | } |
3895 | ||
90aeadfc DC |
3896 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
3897 | new_symbol (die, die->type, cu); | |
3898 | ||
134d01f1 DJ |
3899 | processing_current_prefix = previous_prefix; |
3900 | } | |
3901 | ||
3902 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
3903 | complete the type's fields yet, or create any symbols. */ | |
c906108c SS |
3904 | |
3905 | static void | |
134d01f1 | 3906 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3907 | { |
e7c27a73 | 3908 | struct objfile *objfile = cu->objfile; |
c906108c | 3909 | struct type *type; |
c906108c | 3910 | struct attribute *attr; |
134d01f1 DJ |
3911 | |
3912 | if (die->type) | |
3913 | return; | |
c906108c SS |
3914 | |
3915 | type = alloc_type (objfile); | |
3916 | ||
3917 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
e142c38c | 3918 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3919 | if (attr && DW_STRING (attr)) |
3920 | { | |
d8151005 | 3921 | char *name = DW_STRING (attr); |
63d06c5c DC |
3922 | |
3923 | if (processing_has_namespace_info) | |
3924 | { | |
987504bb JJ |
3925 | TYPE_TAG_NAME (type) = typename_concat (&objfile->objfile_obstack, |
3926 | processing_current_prefix, | |
3927 | name, cu); | |
63d06c5c DC |
3928 | } |
3929 | else | |
3930 | { | |
d8151005 DJ |
3931 | /* The name is already allocated along with this objfile, so |
3932 | we don't need to duplicate it for the type. */ | |
3933 | TYPE_TAG_NAME (type) = name; | |
63d06c5c | 3934 | } |
c906108c SS |
3935 | } |
3936 | ||
e142c38c | 3937 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3938 | if (attr) |
3939 | { | |
3940 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3941 | } | |
3942 | else | |
3943 | { | |
3944 | TYPE_LENGTH (type) = 0; | |
3945 | } | |
3946 | ||
1c379e20 | 3947 | set_die_type (die, type, cu); |
134d01f1 DJ |
3948 | } |
3949 | ||
8176b9b8 | 3950 | /* Determine the name of the type represented by DIE, which should be |
987504bb | 3951 | a named C++ or Java compound type. Return the name in question; the caller |
8176b9b8 DC |
3952 | is responsible for xfree()'ing it. */ |
3953 | ||
3954 | static char * | |
3955 | determine_class_name (struct die_info *die, struct dwarf2_cu *cu) | |
3956 | { | |
3957 | struct cleanup *back_to = NULL; | |
3958 | struct die_info *spec_die = die_specification (die, cu); | |
3959 | char *new_prefix = NULL; | |
3960 | ||
3961 | /* If this is the definition of a class that is declared by another | |
3962 | die, then processing_current_prefix may not be accurate; see | |
3963 | read_func_scope for a similar example. */ | |
3964 | if (spec_die != NULL) | |
3965 | { | |
3966 | char *specification_prefix = determine_prefix (spec_die, cu); | |
3967 | processing_current_prefix = specification_prefix; | |
3968 | back_to = make_cleanup (xfree, specification_prefix); | |
3969 | } | |
3970 | ||
3971 | /* If we don't have namespace debug info, guess the name by trying | |
3972 | to demangle the names of members, just like we did in | |
72bf9492 | 3973 | guess_structure_name. */ |
8176b9b8 DC |
3974 | if (!processing_has_namespace_info) |
3975 | { | |
3976 | struct die_info *child; | |
3977 | ||
3978 | for (child = die->child; | |
3979 | child != NULL && child->tag != 0; | |
3980 | child = sibling_die (child)) | |
3981 | { | |
3982 | if (child->tag == DW_TAG_subprogram) | |
3983 | { | |
31c27f77 JJ |
3984 | new_prefix |
3985 | = language_class_name_from_physname (cu->language_defn, | |
3986 | dwarf2_linkage_name | |
8176b9b8 DC |
3987 | (child, cu)); |
3988 | ||
3989 | if (new_prefix != NULL) | |
3990 | break; | |
3991 | } | |
3992 | } | |
3993 | } | |
3994 | ||
3995 | if (new_prefix == NULL) | |
3996 | { | |
3997 | const char *name = dwarf2_name (die, cu); | |
987504bb JJ |
3998 | new_prefix = typename_concat (NULL, processing_current_prefix, |
3999 | name ? name : "<<anonymous>>", | |
4000 | cu); | |
8176b9b8 DC |
4001 | } |
4002 | ||
4003 | if (back_to != NULL) | |
4004 | do_cleanups (back_to); | |
4005 | ||
4006 | return new_prefix; | |
4007 | } | |
4008 | ||
134d01f1 DJ |
4009 | /* Given a pointer to a die which begins an enumeration, process all |
4010 | the dies that define the members of the enumeration, and create the | |
4011 | symbol for the enumeration type. | |
4012 | ||
4013 | NOTE: We reverse the order of the element list. */ | |
4014 | ||
4015 | static void | |
4016 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4017 | { | |
4018 | struct objfile *objfile = cu->objfile; | |
4019 | struct die_info *child_die; | |
4020 | struct field *fields; | |
4021 | struct attribute *attr; | |
4022 | struct symbol *sym; | |
4023 | int num_fields; | |
4024 | int unsigned_enum = 1; | |
4025 | ||
c906108c SS |
4026 | num_fields = 0; |
4027 | fields = NULL; | |
639d11d3 | 4028 | if (die->child != NULL) |
c906108c | 4029 | { |
639d11d3 | 4030 | child_die = die->child; |
c906108c SS |
4031 | while (child_die && child_die->tag) |
4032 | { | |
4033 | if (child_die->tag != DW_TAG_enumerator) | |
4034 | { | |
e7c27a73 | 4035 | process_die (child_die, cu); |
c906108c SS |
4036 | } |
4037 | else | |
4038 | { | |
e142c38c | 4039 | attr = dwarf2_attr (child_die, DW_AT_name, cu); |
c906108c SS |
4040 | if (attr) |
4041 | { | |
134d01f1 | 4042 | sym = new_symbol (child_die, die->type, cu); |
c906108c SS |
4043 | if (SYMBOL_VALUE (sym) < 0) |
4044 | unsigned_enum = 0; | |
4045 | ||
4046 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4047 | { | |
4048 | fields = (struct field *) | |
4049 | xrealloc (fields, | |
4050 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4051 | * sizeof (struct field)); |
c906108c SS |
4052 | } |
4053 | ||
22abf04a | 4054 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
4055 | FIELD_TYPE (fields[num_fields]) = NULL; |
4056 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
4057 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 4058 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
4059 | |
4060 | num_fields++; | |
4061 | } | |
4062 | } | |
4063 | ||
4064 | child_die = sibling_die (child_die); | |
4065 | } | |
4066 | ||
4067 | if (num_fields) | |
4068 | { | |
134d01f1 DJ |
4069 | TYPE_NFIELDS (die->type) = num_fields; |
4070 | TYPE_FIELDS (die->type) = (struct field *) | |
4071 | TYPE_ALLOC (die->type, sizeof (struct field) * num_fields); | |
4072 | memcpy (TYPE_FIELDS (die->type), fields, | |
c906108c | 4073 | sizeof (struct field) * num_fields); |
b8c9b27d | 4074 | xfree (fields); |
c906108c SS |
4075 | } |
4076 | if (unsigned_enum) | |
134d01f1 | 4077 | TYPE_FLAGS (die->type) |= TYPE_FLAG_UNSIGNED; |
c906108c | 4078 | } |
134d01f1 DJ |
4079 | |
4080 | new_symbol (die, die->type, cu); | |
c906108c SS |
4081 | } |
4082 | ||
4083 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
4084 | the DIE's type field. For now, this only handles one dimensional | |
4085 | arrays. */ | |
4086 | ||
4087 | static void | |
e7c27a73 | 4088 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4089 | { |
e7c27a73 | 4090 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4091 | struct die_info *child_die; |
4092 | struct type *type = NULL; | |
4093 | struct type *element_type, *range_type, *index_type; | |
4094 | struct type **range_types = NULL; | |
4095 | struct attribute *attr; | |
4096 | int ndim = 0; | |
4097 | struct cleanup *back_to; | |
4098 | ||
4099 | /* Return if we've already decoded this type. */ | |
4100 | if (die->type) | |
4101 | { | |
4102 | return; | |
4103 | } | |
4104 | ||
e7c27a73 | 4105 | element_type = die_type (die, cu); |
c906108c SS |
4106 | |
4107 | /* Irix 6.2 native cc creates array types without children for | |
4108 | arrays with unspecified length. */ | |
639d11d3 | 4109 | if (die->child == NULL) |
c906108c | 4110 | { |
e142c38c | 4111 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 4112 | range_type = create_range_type (NULL, index_type, 0, -1); |
1c379e20 DJ |
4113 | set_die_type (die, create_array_type (NULL, element_type, range_type), |
4114 | cu); | |
c906108c SS |
4115 | return; |
4116 | } | |
4117 | ||
4118 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 4119 | child_die = die->child; |
c906108c SS |
4120 | while (child_die && child_die->tag) |
4121 | { | |
4122 | if (child_die->tag == DW_TAG_subrange_type) | |
4123 | { | |
a02abb62 | 4124 | read_subrange_type (child_die, cu); |
c906108c | 4125 | |
a02abb62 JB |
4126 | if (child_die->type != NULL) |
4127 | { | |
4128 | /* The range type was succesfully read. Save it for | |
4129 | the array type creation. */ | |
4130 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
4131 | { | |
4132 | range_types = (struct type **) | |
4133 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
4134 | * sizeof (struct type *)); | |
4135 | if (ndim == 0) | |
4136 | make_cleanup (free_current_contents, &range_types); | |
4137 | } | |
4138 | range_types[ndim++] = child_die->type; | |
4139 | } | |
c906108c SS |
4140 | } |
4141 | child_die = sibling_die (child_die); | |
4142 | } | |
4143 | ||
4144 | /* Dwarf2 dimensions are output from left to right, create the | |
4145 | necessary array types in backwards order. */ | |
7ca2d3a3 | 4146 | |
c906108c | 4147 | type = element_type; |
7ca2d3a3 DL |
4148 | |
4149 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
4150 | { | |
4151 | int i = 0; | |
4152 | while (i < ndim) | |
4153 | type = create_array_type (NULL, type, range_types[i++]); | |
4154 | } | |
4155 | else | |
4156 | { | |
4157 | while (ndim-- > 0) | |
4158 | type = create_array_type (NULL, type, range_types[ndim]); | |
4159 | } | |
c906108c | 4160 | |
f5f8a009 EZ |
4161 | /* Understand Dwarf2 support for vector types (like they occur on |
4162 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
4163 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
4164 | custom vendor extension. The main difference between a regular | |
4165 | array and the vector variant is that vectors are passed by value | |
4166 | to functions. */ | |
e142c38c | 4167 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 EZ |
4168 | if (attr) |
4169 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
4170 | ||
c906108c SS |
4171 | do_cleanups (back_to); |
4172 | ||
4173 | /* Install the type in the die. */ | |
1c379e20 | 4174 | set_die_type (die, type, cu); |
c906108c SS |
4175 | } |
4176 | ||
7ca2d3a3 DL |
4177 | static enum dwarf_array_dim_ordering |
4178 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
4179 | { | |
4180 | struct attribute *attr; | |
4181 | ||
4182 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
4183 | ||
4184 | if (attr) return DW_SND (attr); | |
4185 | ||
4186 | /* | |
4187 | GNU F77 is a special case, as at 08/2004 array type info is the | |
4188 | opposite order to the dwarf2 specification, but data is still | |
4189 | laid out as per normal fortran. | |
4190 | ||
4191 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
4192 | version checking. | |
4193 | */ | |
4194 | ||
4195 | if (cu->language == language_fortran && | |
4196 | cu->producer && strstr (cu->producer, "GNU F77")) | |
4197 | { | |
4198 | return DW_ORD_row_major; | |
4199 | } | |
4200 | ||
4201 | switch (cu->language_defn->la_array_ordering) | |
4202 | { | |
4203 | case array_column_major: | |
4204 | return DW_ORD_col_major; | |
4205 | case array_row_major: | |
4206 | default: | |
4207 | return DW_ORD_row_major; | |
4208 | }; | |
4209 | } | |
4210 | ||
4211 | ||
c906108c SS |
4212 | /* First cut: install each common block member as a global variable. */ |
4213 | ||
4214 | static void | |
e7c27a73 | 4215 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4216 | { |
4217 | struct die_info *child_die; | |
4218 | struct attribute *attr; | |
4219 | struct symbol *sym; | |
4220 | CORE_ADDR base = (CORE_ADDR) 0; | |
4221 | ||
e142c38c | 4222 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
4223 | if (attr) |
4224 | { | |
8e19ed76 PS |
4225 | /* Support the .debug_loc offsets */ |
4226 | if (attr_form_is_block (attr)) | |
4227 | { | |
e7c27a73 | 4228 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 PS |
4229 | } |
4230 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
4231 | { | |
4d3c2250 | 4232 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4233 | } |
4234 | else | |
4235 | { | |
4d3c2250 KB |
4236 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4237 | "common block member"); | |
8e19ed76 | 4238 | } |
c906108c | 4239 | } |
639d11d3 | 4240 | if (die->child != NULL) |
c906108c | 4241 | { |
639d11d3 | 4242 | child_die = die->child; |
c906108c SS |
4243 | while (child_die && child_die->tag) |
4244 | { | |
e7c27a73 | 4245 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 4246 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
4247 | if (attr) |
4248 | { | |
4249 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 4250 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
4251 | add_symbol_to_list (sym, &global_symbols); |
4252 | } | |
4253 | child_die = sibling_die (child_die); | |
4254 | } | |
4255 | } | |
4256 | } | |
4257 | ||
d9fa45fe DC |
4258 | /* Read a C++ namespace. */ |
4259 | ||
d9fa45fe | 4260 | static void |
e7c27a73 | 4261 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 4262 | { |
e7c27a73 | 4263 | struct objfile *objfile = cu->objfile; |
38d518c9 | 4264 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 4265 | const char *name; |
9219021c DC |
4266 | int is_anonymous; |
4267 | struct die_info *current_die; | |
987504bb | 4268 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
9219021c | 4269 | |
e142c38c | 4270 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
4271 | |
4272 | /* Now build the name of the current namespace. */ | |
4273 | ||
38d518c9 | 4274 | if (previous_prefix[0] == '\0') |
9219021c | 4275 | { |
38d518c9 | 4276 | processing_current_prefix = name; |
9219021c DC |
4277 | } |
4278 | else | |
4279 | { | |
987504bb JJ |
4280 | char *temp_name = typename_concat (NULL, previous_prefix, name, cu); |
4281 | make_cleanup (xfree, temp_name); | |
38d518c9 | 4282 | processing_current_prefix = temp_name; |
9219021c DC |
4283 | } |
4284 | ||
5c4e30ca DC |
4285 | /* Add a symbol associated to this if we haven't seen the namespace |
4286 | before. Also, add a using directive if it's an anonymous | |
4287 | namespace. */ | |
9219021c | 4288 | |
e142c38c | 4289 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
4290 | { |
4291 | struct type *type; | |
4292 | ||
4293 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
4294 | this cast will hopefully become unnecessary. */ | |
4295 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 4296 | (char *) processing_current_prefix, |
5c4e30ca DC |
4297 | objfile); |
4298 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
4299 | ||
e7c27a73 | 4300 | new_symbol (die, type, cu); |
1c379e20 | 4301 | set_die_type (die, type, cu); |
5c4e30ca DC |
4302 | |
4303 | if (is_anonymous) | |
38d518c9 EZ |
4304 | cp_add_using_directive (processing_current_prefix, |
4305 | strlen (previous_prefix), | |
4306 | strlen (processing_current_prefix)); | |
5c4e30ca | 4307 | } |
9219021c | 4308 | |
639d11d3 | 4309 | if (die->child != NULL) |
d9fa45fe | 4310 | { |
639d11d3 | 4311 | struct die_info *child_die = die->child; |
d9fa45fe DC |
4312 | |
4313 | while (child_die && child_die->tag) | |
4314 | { | |
e7c27a73 | 4315 | process_die (child_die, cu); |
d9fa45fe DC |
4316 | child_die = sibling_die (child_die); |
4317 | } | |
4318 | } | |
9219021c | 4319 | |
38d518c9 | 4320 | processing_current_prefix = previous_prefix; |
987504bb | 4321 | do_cleanups (back_to); |
38d518c9 EZ |
4322 | } |
4323 | ||
4324 | /* Return the name of the namespace represented by DIE. Set | |
4325 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
4326 | namespace. */ | |
4327 | ||
4328 | static const char * | |
e142c38c | 4329 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
4330 | { |
4331 | struct die_info *current_die; | |
4332 | const char *name = NULL; | |
4333 | ||
4334 | /* Loop through the extensions until we find a name. */ | |
4335 | ||
4336 | for (current_die = die; | |
4337 | current_die != NULL; | |
e142c38c | 4338 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 4339 | { |
e142c38c | 4340 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
4341 | if (name != NULL) |
4342 | break; | |
4343 | } | |
4344 | ||
4345 | /* Is it an anonymous namespace? */ | |
4346 | ||
4347 | *is_anonymous = (name == NULL); | |
4348 | if (*is_anonymous) | |
4349 | name = "(anonymous namespace)"; | |
4350 | ||
4351 | return name; | |
d9fa45fe DC |
4352 | } |
4353 | ||
c906108c SS |
4354 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
4355 | the user defined type vector. */ | |
4356 | ||
4357 | static void | |
e7c27a73 | 4358 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4359 | { |
e7c27a73 | 4360 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 4361 | struct type *type; |
8b2dbe47 KB |
4362 | struct attribute *attr_byte_size; |
4363 | struct attribute *attr_address_class; | |
4364 | int byte_size, addr_class; | |
c906108c SS |
4365 | |
4366 | if (die->type) | |
4367 | { | |
4368 | return; | |
4369 | } | |
4370 | ||
e7c27a73 | 4371 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 4372 | |
e142c38c | 4373 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
4374 | if (attr_byte_size) |
4375 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 4376 | else |
8b2dbe47 KB |
4377 | byte_size = cu_header->addr_size; |
4378 | ||
e142c38c | 4379 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
4380 | if (attr_address_class) |
4381 | addr_class = DW_UNSND (attr_address_class); | |
4382 | else | |
4383 | addr_class = DW_ADDR_none; | |
4384 | ||
4385 | /* If the pointer size or address class is different than the | |
4386 | default, create a type variant marked as such and set the | |
4387 | length accordingly. */ | |
4388 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 4389 | { |
8b2dbe47 KB |
4390 | if (ADDRESS_CLASS_TYPE_FLAGS_P ()) |
4391 | { | |
4392 | int type_flags; | |
4393 | ||
4394 | type_flags = ADDRESS_CLASS_TYPE_FLAGS (byte_size, addr_class); | |
4395 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); | |
4396 | type = make_type_with_address_space (type, type_flags); | |
4397 | } | |
4398 | else if (TYPE_LENGTH (type) != byte_size) | |
4399 | { | |
4d3c2250 | 4400 | complaint (&symfile_complaints, "invalid pointer size %d", byte_size); |
8b2dbe47 KB |
4401 | } |
4402 | else { | |
4403 | /* Should we also complain about unhandled address classes? */ | |
4404 | } | |
c906108c | 4405 | } |
8b2dbe47 KB |
4406 | |
4407 | TYPE_LENGTH (type) = byte_size; | |
1c379e20 | 4408 | set_die_type (die, type, cu); |
c906108c SS |
4409 | } |
4410 | ||
4411 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
4412 | the user defined type vector. */ | |
4413 | ||
4414 | static void | |
e7c27a73 | 4415 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4416 | { |
e7c27a73 | 4417 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4418 | struct type *type; |
4419 | struct type *to_type; | |
4420 | struct type *domain; | |
4421 | ||
4422 | if (die->type) | |
4423 | { | |
4424 | return; | |
4425 | } | |
4426 | ||
4427 | type = alloc_type (objfile); | |
e7c27a73 DJ |
4428 | to_type = die_type (die, cu); |
4429 | domain = die_containing_type (die, cu); | |
c906108c SS |
4430 | smash_to_member_type (type, domain, to_type); |
4431 | ||
1c379e20 | 4432 | set_die_type (die, type, cu); |
c906108c SS |
4433 | } |
4434 | ||
4435 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
4436 | the user defined type vector. */ | |
4437 | ||
4438 | static void | |
e7c27a73 | 4439 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4440 | { |
e7c27a73 | 4441 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4442 | struct type *type; |
4443 | struct attribute *attr; | |
4444 | ||
4445 | if (die->type) | |
4446 | { | |
4447 | return; | |
4448 | } | |
4449 | ||
e7c27a73 | 4450 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 4451 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4452 | if (attr) |
4453 | { | |
4454 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4455 | } | |
4456 | else | |
4457 | { | |
107d2387 | 4458 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 4459 | } |
1c379e20 | 4460 | set_die_type (die, type, cu); |
c906108c SS |
4461 | } |
4462 | ||
4463 | static void | |
e7c27a73 | 4464 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4465 | { |
090c42a4 JB |
4466 | struct type *base_type; |
4467 | ||
c906108c SS |
4468 | if (die->type) |
4469 | { | |
4470 | return; | |
4471 | } | |
4472 | ||
e7c27a73 | 4473 | base_type = die_type (die, cu); |
1c379e20 DJ |
4474 | set_die_type (die, make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0), |
4475 | cu); | |
c906108c SS |
4476 | } |
4477 | ||
4478 | static void | |
e7c27a73 | 4479 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4480 | { |
090c42a4 JB |
4481 | struct type *base_type; |
4482 | ||
c906108c SS |
4483 | if (die->type) |
4484 | { | |
4485 | return; | |
4486 | } | |
4487 | ||
e7c27a73 | 4488 | base_type = die_type (die, cu); |
1c379e20 DJ |
4489 | set_die_type (die, make_cv_type (TYPE_CONST (base_type), 1, base_type, 0), |
4490 | cu); | |
c906108c SS |
4491 | } |
4492 | ||
4493 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
4494 | the user defined type vector. It isn't really a user defined type, | |
4495 | but it behaves like one, with other DIE's using an AT_user_def_type | |
4496 | attribute to reference it. */ | |
4497 | ||
4498 | static void | |
e7c27a73 | 4499 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4500 | { |
e7c27a73 | 4501 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4502 | struct type *type, *range_type, *index_type, *char_type; |
4503 | struct attribute *attr; | |
4504 | unsigned int length; | |
4505 | ||
4506 | if (die->type) | |
4507 | { | |
4508 | return; | |
4509 | } | |
4510 | ||
e142c38c | 4511 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
4512 | if (attr) |
4513 | { | |
4514 | length = DW_UNSND (attr); | |
4515 | } | |
4516 | else | |
4517 | { | |
b21b22e0 | 4518 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 4519 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
4520 | if (attr) |
4521 | { | |
4522 | length = DW_UNSND (attr); | |
4523 | } | |
4524 | else | |
4525 | { | |
4526 | length = 1; | |
4527 | } | |
c906108c | 4528 | } |
e142c38c | 4529 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 4530 | range_type = create_range_type (NULL, index_type, 1, length); |
e142c38c | 4531 | if (cu->language == language_fortran) |
b21b22e0 PS |
4532 | { |
4533 | /* Need to create a unique string type for bounds | |
4534 | information */ | |
4535 | type = create_string_type (0, range_type); | |
4536 | } | |
4537 | else | |
4538 | { | |
e142c38c | 4539 | char_type = dwarf2_fundamental_type (objfile, FT_CHAR, cu); |
b21b22e0 PS |
4540 | type = create_string_type (char_type, range_type); |
4541 | } | |
1c379e20 | 4542 | set_die_type (die, type, cu); |
c906108c SS |
4543 | } |
4544 | ||
4545 | /* Handle DIES due to C code like: | |
4546 | ||
4547 | struct foo | |
c5aa993b JM |
4548 | { |
4549 | int (*funcp)(int a, long l); | |
4550 | int b; | |
4551 | }; | |
c906108c SS |
4552 | |
4553 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 4554 | */ |
c906108c SS |
4555 | |
4556 | static void | |
e7c27a73 | 4557 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4558 | { |
4559 | struct type *type; /* Type that this function returns */ | |
4560 | struct type *ftype; /* Function that returns above type */ | |
4561 | struct attribute *attr; | |
4562 | ||
4563 | /* Decode the type that this subroutine returns */ | |
4564 | if (die->type) | |
4565 | { | |
4566 | return; | |
4567 | } | |
e7c27a73 | 4568 | type = die_type (die, cu); |
1326e61b | 4569 | ftype = make_function_type (type, (struct type **) 0); |
c906108c | 4570 | |
987504bb | 4571 | /* All functions in C++ and Java have prototypes. */ |
e142c38c | 4572 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 4573 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb JJ |
4574 | || cu->language == language_cplus |
4575 | || cu->language == language_java) | |
c906108c SS |
4576 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
4577 | ||
639d11d3 | 4578 | if (die->child != NULL) |
c906108c SS |
4579 | { |
4580 | struct die_info *child_die; | |
4581 | int nparams = 0; | |
4582 | int iparams = 0; | |
4583 | ||
4584 | /* Count the number of parameters. | |
4585 | FIXME: GDB currently ignores vararg functions, but knows about | |
4586 | vararg member functions. */ | |
639d11d3 | 4587 | child_die = die->child; |
c906108c SS |
4588 | while (child_die && child_die->tag) |
4589 | { | |
4590 | if (child_die->tag == DW_TAG_formal_parameter) | |
4591 | nparams++; | |
4592 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
4593 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
4594 | child_die = sibling_die (child_die); | |
4595 | } | |
4596 | ||
4597 | /* Allocate storage for parameters and fill them in. */ | |
4598 | TYPE_NFIELDS (ftype) = nparams; | |
4599 | TYPE_FIELDS (ftype) = (struct field *) | |
4600 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
4601 | ||
639d11d3 | 4602 | child_die = die->child; |
c906108c SS |
4603 | while (child_die && child_die->tag) |
4604 | { | |
4605 | if (child_die->tag == DW_TAG_formal_parameter) | |
4606 | { | |
4607 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
4608 | member functions. G++ helps GDB by marking the first |
4609 | parameter for non-static member functions (which is the | |
4610 | this pointer) as artificial. We pass this information | |
4611 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 4612 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
4613 | if (attr) |
4614 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
4615 | else | |
4616 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 4617 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
4618 | iparams++; |
4619 | } | |
4620 | child_die = sibling_die (child_die); | |
4621 | } | |
4622 | } | |
4623 | ||
1c379e20 | 4624 | set_die_type (die, ftype, cu); |
c906108c SS |
4625 | } |
4626 | ||
4627 | static void | |
e7c27a73 | 4628 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4629 | { |
e7c27a73 | 4630 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
4631 | struct attribute *attr; |
4632 | char *name = NULL; | |
c906108c SS |
4633 | |
4634 | if (!die->type) | |
4635 | { | |
e142c38c | 4636 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c | 4637 | if (attr && DW_STRING (attr)) |
2f038fcb FF |
4638 | { |
4639 | name = DW_STRING (attr); | |
4640 | } | |
1c379e20 DJ |
4641 | set_die_type (die, init_type (TYPE_CODE_TYPEDEF, 0, |
4642 | TYPE_FLAG_TARGET_STUB, name, objfile), | |
4643 | cu); | |
e7c27a73 | 4644 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
4645 | } |
4646 | } | |
4647 | ||
4648 | /* Find a representation of a given base type and install | |
4649 | it in the TYPE field of the die. */ | |
4650 | ||
4651 | static void | |
e7c27a73 | 4652 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4653 | { |
e7c27a73 | 4654 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4655 | struct type *type; |
4656 | struct attribute *attr; | |
4657 | int encoding = 0, size = 0; | |
4658 | ||
4659 | /* If we've already decoded this die, this is a no-op. */ | |
4660 | if (die->type) | |
4661 | { | |
4662 | return; | |
4663 | } | |
4664 | ||
e142c38c | 4665 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
4666 | if (attr) |
4667 | { | |
4668 | encoding = DW_UNSND (attr); | |
4669 | } | |
e142c38c | 4670 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4671 | if (attr) |
4672 | { | |
4673 | size = DW_UNSND (attr); | |
4674 | } | |
e142c38c | 4675 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
4676 | if (attr && DW_STRING (attr)) |
4677 | { | |
4678 | enum type_code code = TYPE_CODE_INT; | |
f5ef7c67 | 4679 | int type_flags = 0; |
c906108c SS |
4680 | |
4681 | switch (encoding) | |
4682 | { | |
4683 | case DW_ATE_address: | |
4684 | /* Turn DW_ATE_address into a void * pointer. */ | |
4685 | code = TYPE_CODE_PTR; | |
f5ef7c67 | 4686 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4687 | break; |
4688 | case DW_ATE_boolean: | |
4689 | code = TYPE_CODE_BOOL; | |
f5ef7c67 | 4690 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4691 | break; |
4692 | case DW_ATE_complex_float: | |
4693 | code = TYPE_CODE_COMPLEX; | |
4694 | break; | |
4695 | case DW_ATE_float: | |
4696 | code = TYPE_CODE_FLT; | |
4697 | break; | |
4698 | case DW_ATE_signed: | |
4699 | case DW_ATE_signed_char: | |
4700 | break; | |
4701 | case DW_ATE_unsigned: | |
4702 | case DW_ATE_unsigned_char: | |
f5ef7c67 | 4703 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4704 | break; |
4705 | default: | |
4d3c2250 KB |
4706 | complaint (&symfile_complaints, "unsupported DW_AT_encoding: '%s'", |
4707 | dwarf_type_encoding_name (encoding)); | |
c906108c SS |
4708 | break; |
4709 | } | |
f5ef7c67 | 4710 | type = init_type (code, size, type_flags, DW_STRING (attr), objfile); |
c906108c | 4711 | if (encoding == DW_ATE_address) |
e142c38c DJ |
4712 | TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID, |
4713 | cu); | |
f65ca430 DJ |
4714 | else if (encoding == DW_ATE_complex_float) |
4715 | { | |
4716 | if (size == 32) | |
4717 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4718 | = dwarf2_fundamental_type (objfile, FT_EXT_PREC_FLOAT, cu); |
f65ca430 DJ |
4719 | else if (size == 16) |
4720 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4721 | = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
f65ca430 DJ |
4722 | else if (size == 8) |
4723 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4724 | = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
f65ca430 | 4725 | } |
c906108c SS |
4726 | } |
4727 | else | |
4728 | { | |
e7c27a73 | 4729 | type = dwarf_base_type (encoding, size, cu); |
c906108c | 4730 | } |
1c379e20 | 4731 | set_die_type (die, type, cu); |
c906108c SS |
4732 | } |
4733 | ||
a02abb62 JB |
4734 | /* Read the given DW_AT_subrange DIE. */ |
4735 | ||
4736 | static void | |
4737 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
4738 | { | |
4739 | struct type *base_type; | |
4740 | struct type *range_type; | |
4741 | struct attribute *attr; | |
4742 | int low = 0; | |
4743 | int high = -1; | |
4744 | ||
4745 | /* If we have already decoded this die, then nothing more to do. */ | |
4746 | if (die->type) | |
4747 | return; | |
4748 | ||
4749 | base_type = die_type (die, cu); | |
4750 | if (base_type == NULL) | |
4751 | { | |
4752 | complaint (&symfile_complaints, | |
4753 | "DW_AT_type missing from DW_TAG_subrange_type"); | |
4754 | return; | |
4755 | } | |
4756 | ||
4757 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
4758 | base_type = alloc_type (NULL); | |
4759 | ||
e142c38c | 4760 | if (cu->language == language_fortran) |
a02abb62 JB |
4761 | { |
4762 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
4763 | low = 1; | |
4764 | } | |
4765 | ||
dd5e6932 DJ |
4766 | /* FIXME: For variable sized arrays either of these could be |
4767 | a variable rather than a constant value. We'll allow it, | |
4768 | but we don't know how to handle it. */ | |
e142c38c | 4769 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
4770 | if (attr) |
4771 | low = dwarf2_get_attr_constant_value (attr, 0); | |
4772 | ||
e142c38c | 4773 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
4774 | if (attr) |
4775 | { | |
4776 | if (attr->form == DW_FORM_block1) | |
4777 | { | |
4778 | /* GCC encodes arrays with unspecified or dynamic length | |
4779 | with a DW_FORM_block1 attribute. | |
4780 | FIXME: GDB does not yet know how to handle dynamic | |
4781 | arrays properly, treat them as arrays with unspecified | |
4782 | length for now. | |
4783 | ||
4784 | FIXME: jimb/2003-09-22: GDB does not really know | |
4785 | how to handle arrays of unspecified length | |
4786 | either; we just represent them as zero-length | |
4787 | arrays. Choose an appropriate upper bound given | |
4788 | the lower bound we've computed above. */ | |
4789 | high = low - 1; | |
4790 | } | |
4791 | else | |
4792 | high = dwarf2_get_attr_constant_value (attr, 1); | |
4793 | } | |
4794 | ||
4795 | range_type = create_range_type (NULL, base_type, low, high); | |
4796 | ||
e142c38c | 4797 | attr = dwarf2_attr (die, DW_AT_name, cu); |
a02abb62 JB |
4798 | if (attr && DW_STRING (attr)) |
4799 | TYPE_NAME (range_type) = DW_STRING (attr); | |
4800 | ||
e142c38c | 4801 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
4802 | if (attr) |
4803 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
4804 | ||
1c379e20 | 4805 | set_die_type (die, range_type, cu); |
a02abb62 JB |
4806 | } |
4807 | ||
4808 | ||
c906108c SS |
4809 | /* Read a whole compilation unit into a linked list of dies. */ |
4810 | ||
f9aca02d | 4811 | static struct die_info * |
e7c27a73 | 4812 | read_comp_unit (char *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4813 | { |
e7c27a73 | 4814 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
4815 | } |
4816 | ||
4817 | /* Read a single die and all its descendents. Set the die's sibling | |
4818 | field to NULL; set other fields in the die correctly, and set all | |
4819 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
4820 | location of the info_ptr after reading all of those dies. PARENT | |
4821 | is the parent of the die in question. */ | |
4822 | ||
4823 | static struct die_info * | |
4824 | read_die_and_children (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4825 | struct dwarf2_cu *cu, |
639d11d3 DC |
4826 | char **new_info_ptr, |
4827 | struct die_info *parent) | |
4828 | { | |
4829 | struct die_info *die; | |
4830 | char *cur_ptr; | |
4831 | int has_children; | |
4832 | ||
e7c27a73 | 4833 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
10b3939b | 4834 | store_in_ref_table (die->offset, die, cu); |
639d11d3 DC |
4835 | |
4836 | if (has_children) | |
4837 | { | |
e7c27a73 | 4838 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
4839 | new_info_ptr, die); |
4840 | } | |
4841 | else | |
4842 | { | |
4843 | die->child = NULL; | |
4844 | *new_info_ptr = cur_ptr; | |
4845 | } | |
4846 | ||
4847 | die->sibling = NULL; | |
4848 | die->parent = parent; | |
4849 | return die; | |
4850 | } | |
4851 | ||
4852 | /* Read a die, all of its descendents, and all of its siblings; set | |
4853 | all of the fields of all of the dies correctly. Arguments are as | |
4854 | in read_die_and_children. */ | |
4855 | ||
4856 | static struct die_info * | |
4857 | read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4858 | struct dwarf2_cu *cu, |
639d11d3 DC |
4859 | char **new_info_ptr, |
4860 | struct die_info *parent) | |
4861 | { | |
4862 | struct die_info *first_die, *last_sibling; | |
4863 | char *cur_ptr; | |
4864 | ||
c906108c | 4865 | cur_ptr = info_ptr; |
639d11d3 DC |
4866 | first_die = last_sibling = NULL; |
4867 | ||
4868 | while (1) | |
c906108c | 4869 | { |
639d11d3 | 4870 | struct die_info *die |
e7c27a73 | 4871 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
4872 | |
4873 | if (!first_die) | |
c906108c | 4874 | { |
639d11d3 | 4875 | first_die = die; |
c906108c | 4876 | } |
639d11d3 | 4877 | else |
c906108c | 4878 | { |
639d11d3 | 4879 | last_sibling->sibling = die; |
c906108c SS |
4880 | } |
4881 | ||
639d11d3 | 4882 | if (die->tag == 0) |
c906108c | 4883 | { |
639d11d3 DC |
4884 | *new_info_ptr = cur_ptr; |
4885 | return first_die; | |
c906108c SS |
4886 | } |
4887 | else | |
4888 | { | |
639d11d3 | 4889 | last_sibling = die; |
c906108c SS |
4890 | } |
4891 | } | |
c906108c SS |
4892 | } |
4893 | ||
4894 | /* Free a linked list of dies. */ | |
4895 | ||
4896 | static void | |
fba45db2 | 4897 | free_die_list (struct die_info *dies) |
c906108c SS |
4898 | { |
4899 | struct die_info *die, *next; | |
4900 | ||
4901 | die = dies; | |
4902 | while (die) | |
4903 | { | |
639d11d3 DC |
4904 | if (die->child != NULL) |
4905 | free_die_list (die->child); | |
4906 | next = die->sibling; | |
b8c9b27d KB |
4907 | xfree (die->attrs); |
4908 | xfree (die); | |
c906108c SS |
4909 | die = next; |
4910 | } | |
4911 | } | |
4912 | ||
4913 | /* Read the contents of the section at OFFSET and of size SIZE from the | |
8b92e4d5 | 4914 | object file specified by OBJFILE into the objfile_obstack and return it. */ |
c906108c | 4915 | |
b6af0555 | 4916 | char * |
188dd5d6 | 4917 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
4918 | { |
4919 | bfd *abfd = objfile->obfd; | |
086df311 | 4920 | char *buf, *retbuf; |
2c500098 | 4921 | bfd_size_type size = bfd_get_section_size (sectp); |
c906108c SS |
4922 | |
4923 | if (size == 0) | |
4924 | return NULL; | |
4925 | ||
8b92e4d5 | 4926 | buf = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
086df311 DJ |
4927 | retbuf |
4928 | = (char *) symfile_relocate_debug_section (abfd, sectp, (bfd_byte *) buf); | |
4929 | if (retbuf != NULL) | |
4930 | return retbuf; | |
4931 | ||
188dd5d6 DJ |
4932 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
4933 | || bfd_bread (buf, size, abfd) != size) | |
4934 | error ("Dwarf Error: Can't read DWARF data from '%s'", | |
4935 | bfd_get_filename (abfd)); | |
4936 | ||
c906108c SS |
4937 | return buf; |
4938 | } | |
4939 | ||
4940 | /* In DWARF version 2, the description of the debugging information is | |
4941 | stored in a separate .debug_abbrev section. Before we read any | |
4942 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
4943 | in a hash table. This function also sets flags in CU describing |
4944 | the data found in the abbrev table. */ | |
c906108c SS |
4945 | |
4946 | static void | |
e7c27a73 | 4947 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4948 | { |
e7c27a73 | 4949 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4950 | char *abbrev_ptr; |
4951 | struct abbrev_info *cur_abbrev; | |
4952 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
4953 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
4954 | struct attr_abbrev *cur_attrs; |
4955 | unsigned int allocated_attrs; | |
c906108c | 4956 | |
57349743 | 4957 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
4958 | obstack_init (&cu->abbrev_obstack); |
4959 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
4960 | (ABBREV_HASH_SIZE | |
4961 | * sizeof (struct abbrev_info *))); | |
4962 | memset (cu->dwarf2_abbrevs, 0, | |
4963 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 4964 | |
6502dd73 | 4965 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
4966 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
4967 | abbrev_ptr += bytes_read; | |
4968 | ||
f3dd6933 DJ |
4969 | allocated_attrs = ATTR_ALLOC_CHUNK; |
4970 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
4971 | ||
c906108c SS |
4972 | /* loop until we reach an abbrev number of 0 */ |
4973 | while (abbrev_number) | |
4974 | { | |
f3dd6933 | 4975 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
4976 | |
4977 | /* read in abbrev header */ | |
4978 | cur_abbrev->number = abbrev_number; | |
4979 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4980 | abbrev_ptr += bytes_read; | |
4981 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
4982 | abbrev_ptr += 1; | |
4983 | ||
72bf9492 DJ |
4984 | if (cur_abbrev->tag == DW_TAG_namespace) |
4985 | cu->has_namespace_info = 1; | |
4986 | ||
c906108c SS |
4987 | /* now read in declarations */ |
4988 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4989 | abbrev_ptr += bytes_read; | |
4990 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4991 | abbrev_ptr += bytes_read; | |
4992 | while (abbrev_name) | |
4993 | { | |
f3dd6933 | 4994 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 4995 | { |
f3dd6933 DJ |
4996 | allocated_attrs += ATTR_ALLOC_CHUNK; |
4997 | cur_attrs | |
4998 | = xrealloc (cur_attrs, (allocated_attrs | |
4999 | * sizeof (struct attr_abbrev))); | |
c906108c | 5000 | } |
ae038cb0 DJ |
5001 | |
5002 | /* Record whether this compilation unit might have | |
5003 | inter-compilation-unit references. If we don't know what form | |
5004 | this attribute will have, then it might potentially be a | |
5005 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
5006 | references. */ | |
5007 | ||
5008 | if (abbrev_form == DW_FORM_ref_addr | |
5009 | || abbrev_form == DW_FORM_indirect) | |
5010 | cu->has_form_ref_addr = 1; | |
5011 | ||
f3dd6933 DJ |
5012 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
5013 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
5014 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5015 | abbrev_ptr += bytes_read; | |
5016 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5017 | abbrev_ptr += bytes_read; | |
5018 | } | |
5019 | ||
f3dd6933 DJ |
5020 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
5021 | (cur_abbrev->num_attrs | |
5022 | * sizeof (struct attr_abbrev))); | |
5023 | memcpy (cur_abbrev->attrs, cur_attrs, | |
5024 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
5025 | ||
c906108c | 5026 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
5027 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
5028 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
5029 | |
5030 | /* Get next abbreviation. | |
5031 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
5032 | always properly terminated with an abbrev number of 0. |
5033 | Exit loop if we encounter an abbreviation which we have | |
5034 | already read (which means we are about to read the abbreviations | |
5035 | for the next compile unit) or if the end of the abbreviation | |
5036 | table is reached. */ | |
6502dd73 DJ |
5037 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev_buffer) |
5038 | >= dwarf2_per_objfile->abbrev_size) | |
c906108c SS |
5039 | break; |
5040 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5041 | abbrev_ptr += bytes_read; | |
e7c27a73 | 5042 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
5043 | break; |
5044 | } | |
f3dd6933 DJ |
5045 | |
5046 | xfree (cur_attrs); | |
c906108c SS |
5047 | } |
5048 | ||
f3dd6933 | 5049 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 5050 | |
c906108c | 5051 | static void |
f3dd6933 | 5052 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 5053 | { |
f3dd6933 | 5054 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 5055 | |
f3dd6933 DJ |
5056 | obstack_free (&cu->abbrev_obstack, NULL); |
5057 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
5058 | } |
5059 | ||
5060 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
5061 | ||
5062 | static struct abbrev_info * | |
e7c27a73 | 5063 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
5064 | { |
5065 | unsigned int hash_number; | |
5066 | struct abbrev_info *abbrev; | |
5067 | ||
5068 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 5069 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
5070 | |
5071 | while (abbrev) | |
5072 | { | |
5073 | if (abbrev->number == number) | |
5074 | return abbrev; | |
5075 | else | |
5076 | abbrev = abbrev->next; | |
5077 | } | |
5078 | return NULL; | |
5079 | } | |
5080 | ||
72bf9492 DJ |
5081 | /* Returns nonzero if TAG represents a type that we might generate a partial |
5082 | symbol for. */ | |
5083 | ||
5084 | static int | |
5085 | is_type_tag_for_partial (int tag) | |
5086 | { | |
5087 | switch (tag) | |
5088 | { | |
5089 | #if 0 | |
5090 | /* Some types that would be reasonable to generate partial symbols for, | |
5091 | that we don't at present. */ | |
5092 | case DW_TAG_array_type: | |
5093 | case DW_TAG_file_type: | |
5094 | case DW_TAG_ptr_to_member_type: | |
5095 | case DW_TAG_set_type: | |
5096 | case DW_TAG_string_type: | |
5097 | case DW_TAG_subroutine_type: | |
5098 | #endif | |
5099 | case DW_TAG_base_type: | |
5100 | case DW_TAG_class_type: | |
5101 | case DW_TAG_enumeration_type: | |
5102 | case DW_TAG_structure_type: | |
5103 | case DW_TAG_subrange_type: | |
5104 | case DW_TAG_typedef: | |
5105 | case DW_TAG_union_type: | |
5106 | return 1; | |
5107 | default: | |
5108 | return 0; | |
5109 | } | |
5110 | } | |
5111 | ||
5112 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
5113 | ||
5114 | static struct partial_die_info * | |
5115 | load_partial_dies (bfd *abfd, char *info_ptr, int building_psymtab, | |
5116 | struct dwarf2_cu *cu) | |
5117 | { | |
5118 | struct partial_die_info *part_die; | |
5119 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
5120 | struct abbrev_info *abbrev; | |
5121 | unsigned int bytes_read; | |
5122 | ||
5123 | int nesting_level = 1; | |
5124 | ||
5125 | parent_die = NULL; | |
5126 | last_die = NULL; | |
5127 | ||
5128 | cu->partial_dies | |
5129 | = htab_create_alloc_ex (cu->header.length / 12, | |
5130 | partial_die_hash, | |
5131 | partial_die_eq, | |
5132 | NULL, | |
5133 | &cu->comp_unit_obstack, | |
5134 | hashtab_obstack_allocate, | |
5135 | dummy_obstack_deallocate); | |
5136 | ||
5137 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5138 | sizeof (struct partial_die_info)); | |
5139 | ||
5140 | while (1) | |
5141 | { | |
5142 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5143 | ||
5144 | /* A NULL abbrev means the end of a series of children. */ | |
5145 | if (abbrev == NULL) | |
5146 | { | |
5147 | if (--nesting_level == 0) | |
5148 | { | |
5149 | /* PART_DIE was probably the last thing allocated on the | |
5150 | comp_unit_obstack, so we could call obstack_free | |
5151 | here. We don't do that because the waste is small, | |
5152 | and will be cleaned up when we're done with this | |
5153 | compilation unit. This way, we're also more robust | |
5154 | against other users of the comp_unit_obstack. */ | |
5155 | return first_die; | |
5156 | } | |
5157 | info_ptr += bytes_read; | |
5158 | last_die = parent_die; | |
5159 | parent_die = parent_die->die_parent; | |
5160 | continue; | |
5161 | } | |
5162 | ||
5163 | /* Check whether this DIE is interesting enough to save. */ | |
5164 | if (!is_type_tag_for_partial (abbrev->tag) | |
5165 | && abbrev->tag != DW_TAG_enumerator | |
5166 | && abbrev->tag != DW_TAG_subprogram | |
5167 | && abbrev->tag != DW_TAG_variable | |
5168 | && abbrev->tag != DW_TAG_namespace) | |
5169 | { | |
5170 | /* Otherwise we skip to the next sibling, if any. */ | |
5171 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
5172 | continue; | |
5173 | } | |
5174 | ||
5175 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, | |
5176 | abfd, info_ptr, cu); | |
5177 | ||
5178 | /* This two-pass algorithm for processing partial symbols has a | |
5179 | high cost in cache pressure. Thus, handle some simple cases | |
5180 | here which cover the majority of C partial symbols. DIEs | |
5181 | which neither have specification tags in them, nor could have | |
5182 | specification tags elsewhere pointing at them, can simply be | |
5183 | processed and discarded. | |
5184 | ||
5185 | This segment is also optional; scan_partial_symbols and | |
5186 | add_partial_symbol will handle these DIEs if we chain | |
5187 | them in normally. When compilers which do not emit large | |
5188 | quantities of duplicate debug information are more common, | |
5189 | this code can probably be removed. */ | |
5190 | ||
5191 | /* Any complete simple types at the top level (pretty much all | |
5192 | of them, for a language without namespaces), can be processed | |
5193 | directly. */ | |
5194 | if (parent_die == NULL | |
5195 | && part_die->has_specification == 0 | |
5196 | && part_die->is_declaration == 0 | |
5197 | && (part_die->tag == DW_TAG_typedef | |
5198 | || part_die->tag == DW_TAG_base_type | |
5199 | || part_die->tag == DW_TAG_subrange_type)) | |
5200 | { | |
5201 | if (building_psymtab && part_die->name != NULL) | |
5202 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5203 | VAR_DOMAIN, LOC_TYPEDEF, | |
5204 | &cu->objfile->static_psymbols, | |
5205 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5206 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5207 | continue; | |
5208 | } | |
5209 | ||
5210 | /* If we're at the second level, and we're an enumerator, and | |
5211 | our parent has no specification (meaning possibly lives in a | |
5212 | namespace elsewhere), then we can add the partial symbol now | |
5213 | instead of queueing it. */ | |
5214 | if (part_die->tag == DW_TAG_enumerator | |
5215 | && parent_die != NULL | |
5216 | && parent_die->die_parent == NULL | |
5217 | && parent_die->tag == DW_TAG_enumeration_type | |
5218 | && parent_die->has_specification == 0) | |
5219 | { | |
5220 | if (part_die->name == NULL) | |
5221 | complaint (&symfile_complaints, "malformed enumerator DIE ignored"); | |
5222 | else if (building_psymtab) | |
5223 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5224 | VAR_DOMAIN, LOC_CONST, | |
987504bb JJ |
5225 | (cu->language == language_cplus |
5226 | || cu->language == language_java) | |
72bf9492 DJ |
5227 | ? &cu->objfile->global_psymbols |
5228 | : &cu->objfile->static_psymbols, | |
5229 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5230 | ||
5231 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5232 | continue; | |
5233 | } | |
5234 | ||
5235 | /* We'll save this DIE so link it in. */ | |
5236 | part_die->die_parent = parent_die; | |
5237 | part_die->die_sibling = NULL; | |
5238 | part_die->die_child = NULL; | |
5239 | ||
5240 | if (last_die && last_die == parent_die) | |
5241 | last_die->die_child = part_die; | |
5242 | else if (last_die) | |
5243 | last_die->die_sibling = part_die; | |
5244 | ||
5245 | last_die = part_die; | |
5246 | ||
5247 | if (first_die == NULL) | |
5248 | first_die = part_die; | |
5249 | ||
5250 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
5251 | find interesting need to be in the hash table, because we | |
5252 | also have the parent/sibling/child chains; only those that we | |
5253 | might refer to by offset later during partial symbol reading. | |
5254 | ||
5255 | For now this means things that might have be the target of a | |
5256 | DW_AT_specification, DW_AT_abstract_origin, or | |
5257 | DW_AT_extension. DW_AT_extension will refer only to | |
5258 | namespaces; DW_AT_abstract_origin refers to functions (and | |
5259 | many things under the function DIE, but we do not recurse | |
5260 | into function DIEs during partial symbol reading) and | |
5261 | possibly variables as well; DW_AT_specification refers to | |
5262 | declarations. Declarations ought to have the DW_AT_declaration | |
5263 | flag. It happens that GCC forgets to put it in sometimes, but | |
5264 | only for functions, not for types. | |
5265 | ||
5266 | Adding more things than necessary to the hash table is harmless | |
5267 | except for the performance cost. Adding too few will result in | |
5268 | internal errors in find_partial_die. */ | |
5269 | ||
5270 | if (abbrev->tag == DW_TAG_subprogram | |
5271 | || abbrev->tag == DW_TAG_variable | |
5272 | || abbrev->tag == DW_TAG_namespace | |
5273 | || part_die->is_declaration) | |
5274 | { | |
5275 | void **slot; | |
5276 | ||
5277 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
5278 | part_die->offset, INSERT); | |
5279 | *slot = part_die; | |
5280 | } | |
5281 | ||
5282 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5283 | sizeof (struct partial_die_info)); | |
5284 | ||
5285 | /* For some DIEs we want to follow their children (if any). For C | |
5286 | we have no reason to follow the children of structures; for other | |
5287 | languages we have to, both so that we can get at method physnames | |
5288 | to infer fully qualified class names, and for DW_AT_specification. */ | |
5289 | if (last_die->has_children | |
5290 | && (last_die->tag == DW_TAG_namespace | |
5291 | || last_die->tag == DW_TAG_enumeration_type | |
5292 | || (cu->language != language_c | |
5293 | && (last_die->tag == DW_TAG_class_type | |
5294 | || last_die->tag == DW_TAG_structure_type | |
5295 | || last_die->tag == DW_TAG_union_type)))) | |
5296 | { | |
5297 | nesting_level++; | |
5298 | parent_die = last_die; | |
5299 | continue; | |
5300 | } | |
5301 | ||
5302 | /* Otherwise we skip to the next sibling, if any. */ | |
5303 | info_ptr = locate_pdi_sibling (last_die, info_ptr, abfd, cu); | |
5304 | ||
5305 | /* Back to the top, do it again. */ | |
5306 | } | |
5307 | } | |
5308 | ||
c906108c SS |
5309 | /* Read a minimal amount of information into the minimal die structure. */ |
5310 | ||
5311 | static char * | |
72bf9492 DJ |
5312 | read_partial_die (struct partial_die_info *part_die, |
5313 | struct abbrev_info *abbrev, | |
5314 | unsigned int abbrev_len, bfd *abfd, | |
e7c27a73 | 5315 | char *info_ptr, struct dwarf2_cu *cu) |
c906108c | 5316 | { |
72bf9492 | 5317 | unsigned int bytes_read, i; |
c906108c | 5318 | struct attribute attr; |
c5aa993b | 5319 | int has_low_pc_attr = 0; |
c906108c SS |
5320 | int has_high_pc_attr = 0; |
5321 | ||
72bf9492 | 5322 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 5323 | |
6502dd73 | 5324 | part_die->offset = info_ptr - dwarf2_per_objfile->info_buffer; |
72bf9492 DJ |
5325 | |
5326 | info_ptr += abbrev_len; | |
5327 | ||
5328 | if (abbrev == NULL) | |
5329 | return info_ptr; | |
5330 | ||
c906108c SS |
5331 | part_die->tag = abbrev->tag; |
5332 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
5333 | |
5334 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5335 | { | |
e7c27a73 | 5336 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
5337 | |
5338 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 5339 | partial symbol table. */ |
c906108c SS |
5340 | switch (attr.name) |
5341 | { | |
5342 | case DW_AT_name: | |
5343 | ||
5344 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
5345 | if (part_die->name == NULL) | |
5346 | part_die->name = DW_STRING (&attr); | |
5347 | break; | |
57c22c6c BR |
5348 | case DW_AT_comp_dir: |
5349 | if (part_die->dirname == NULL) | |
5350 | part_die->dirname = DW_STRING (&attr); | |
5351 | break; | |
c906108c SS |
5352 | case DW_AT_MIPS_linkage_name: |
5353 | part_die->name = DW_STRING (&attr); | |
5354 | break; | |
5355 | case DW_AT_low_pc: | |
5356 | has_low_pc_attr = 1; | |
5357 | part_die->lowpc = DW_ADDR (&attr); | |
5358 | break; | |
5359 | case DW_AT_high_pc: | |
5360 | has_high_pc_attr = 1; | |
5361 | part_die->highpc = DW_ADDR (&attr); | |
5362 | break; | |
5363 | case DW_AT_location: | |
8e19ed76 PS |
5364 | /* Support the .debug_loc offsets */ |
5365 | if (attr_form_is_block (&attr)) | |
5366 | { | |
5367 | part_die->locdesc = DW_BLOCK (&attr); | |
5368 | } | |
5369 | else if (attr.form == DW_FORM_data4 || attr.form == DW_FORM_data8) | |
5370 | { | |
4d3c2250 | 5371 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5372 | } |
5373 | else | |
5374 | { | |
4d3c2250 KB |
5375 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
5376 | "partial symbol information"); | |
8e19ed76 | 5377 | } |
c906108c SS |
5378 | break; |
5379 | case DW_AT_language: | |
5380 | part_die->language = DW_UNSND (&attr); | |
5381 | break; | |
5382 | case DW_AT_external: | |
5383 | part_die->is_external = DW_UNSND (&attr); | |
5384 | break; | |
5385 | case DW_AT_declaration: | |
5386 | part_die->is_declaration = DW_UNSND (&attr); | |
5387 | break; | |
5388 | case DW_AT_type: | |
5389 | part_die->has_type = 1; | |
5390 | break; | |
5391 | case DW_AT_abstract_origin: | |
5392 | case DW_AT_specification: | |
72bf9492 DJ |
5393 | case DW_AT_extension: |
5394 | part_die->has_specification = 1; | |
5395 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c SS |
5396 | break; |
5397 | case DW_AT_sibling: | |
5398 | /* Ignore absolute siblings, they might point outside of | |
5399 | the current compile unit. */ | |
5400 | if (attr.form == DW_FORM_ref_addr) | |
4d3c2250 | 5401 | complaint (&symfile_complaints, "ignoring absolute DW_AT_sibling"); |
c906108c | 5402 | else |
6502dd73 DJ |
5403 | part_die->sibling = dwarf2_per_objfile->info_buffer |
5404 | + dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c | 5405 | break; |
aaa75496 JB |
5406 | case DW_AT_stmt_list: |
5407 | part_die->has_stmt_list = 1; | |
5408 | part_die->line_offset = DW_UNSND (&attr); | |
5409 | break; | |
c906108c SS |
5410 | default: |
5411 | break; | |
5412 | } | |
5413 | } | |
5414 | ||
c906108c SS |
5415 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
5416 | eliminate duplicate copies of functions and vtables and such. | |
5417 | The linker will arbitrarily choose one and discard the others. | |
5418 | The AT_*_pc values for such functions refer to local labels in | |
5419 | these sections. If the section from that file was discarded, the | |
5420 | labels are not in the output, so the relocs get a value of 0. | |
5421 | If this is a discarded function, mark the pc bounds as invalid, | |
5422 | so that GDB will ignore it. */ | |
5423 | if (has_low_pc_attr && has_high_pc_attr | |
5424 | && part_die->lowpc < part_die->highpc | |
5425 | && (part_die->lowpc != 0 | |
5426 | || (bfd_get_file_flags (abfd) & HAS_RELOC))) | |
0b010bcc | 5427 | part_die->has_pc_info = 1; |
c906108c SS |
5428 | return info_ptr; |
5429 | } | |
5430 | ||
72bf9492 DJ |
5431 | /* Find a cached partial DIE at OFFSET in CU. */ |
5432 | ||
5433 | static struct partial_die_info * | |
5434 | find_partial_die_in_comp_unit (unsigned long offset, struct dwarf2_cu *cu) | |
5435 | { | |
5436 | struct partial_die_info *lookup_die = NULL; | |
5437 | struct partial_die_info part_die; | |
5438 | ||
5439 | part_die.offset = offset; | |
5440 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
5441 | ||
5442 | if (lookup_die == NULL) | |
5443 | internal_error (__FILE__, __LINE__, | |
5444 | "could not find partial DIE in cache\n"); | |
5445 | ||
5446 | return lookup_die; | |
5447 | } | |
5448 | ||
5449 | /* Find a partial DIE at OFFSET, which may or may not be in CU. */ | |
5450 | ||
5451 | static struct partial_die_info * | |
10b3939b | 5452 | find_partial_die (unsigned long offset, struct dwarf2_cu *cu) |
72bf9492 DJ |
5453 | { |
5454 | struct dwarf2_per_cu_data *per_cu; | |
5455 | ||
5456 | if (offset >= cu->header.offset | |
5457 | && offset < cu->header.offset + cu->header.length) | |
10b3939b | 5458 | return find_partial_die_in_comp_unit (offset, cu); |
72bf9492 | 5459 | |
ae038cb0 DJ |
5460 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
5461 | ||
ae038cb0 DJ |
5462 | if (per_cu->cu == NULL) |
5463 | { | |
5464 | load_comp_unit (per_cu, cu->objfile); | |
5465 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5466 | dwarf2_per_objfile->read_in_chain = per_cu; | |
5467 | } | |
5468 | ||
5469 | per_cu->cu->last_used = 0; | |
ae038cb0 | 5470 | return find_partial_die_in_comp_unit (offset, per_cu->cu); |
72bf9492 DJ |
5471 | } |
5472 | ||
5473 | /* Adjust PART_DIE before generating a symbol for it. This function | |
5474 | may set the is_external flag or change the DIE's name. */ | |
5475 | ||
5476 | static void | |
5477 | fixup_partial_die (struct partial_die_info *part_die, | |
5478 | struct dwarf2_cu *cu) | |
5479 | { | |
5480 | /* If we found a reference attribute and the DIE has no name, try | |
5481 | to find a name in the referred to DIE. */ | |
5482 | ||
5483 | if (part_die->name == NULL && part_die->has_specification) | |
5484 | { | |
5485 | struct partial_die_info *spec_die; | |
72bf9492 | 5486 | |
10b3939b | 5487 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 5488 | |
10b3939b | 5489 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
5490 | |
5491 | if (spec_die->name) | |
5492 | { | |
5493 | part_die->name = spec_die->name; | |
5494 | ||
5495 | /* Copy DW_AT_external attribute if it is set. */ | |
5496 | if (spec_die->is_external) | |
5497 | part_die->is_external = spec_die->is_external; | |
5498 | } | |
5499 | } | |
5500 | ||
5501 | /* Set default names for some unnamed DIEs. */ | |
5502 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
5503 | || part_die->tag == DW_TAG_class_type)) | |
5504 | part_die->name = "(anonymous class)"; | |
5505 | ||
5506 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
5507 | part_die->name = "(anonymous namespace)"; | |
5508 | ||
5509 | if (part_die->tag == DW_TAG_structure_type | |
5510 | || part_die->tag == DW_TAG_class_type | |
5511 | || part_die->tag == DW_TAG_union_type) | |
5512 | guess_structure_name (part_die, cu); | |
5513 | } | |
5514 | ||
639d11d3 DC |
5515 | /* Read the die from the .debug_info section buffer. Set DIEP to |
5516 | point to a newly allocated die with its information, except for its | |
5517 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
5518 | whether the die has children or not. */ | |
c906108c SS |
5519 | |
5520 | static char * | |
107d2387 | 5521 | read_full_die (struct die_info **diep, bfd *abfd, char *info_ptr, |
e7c27a73 | 5522 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
5523 | { |
5524 | unsigned int abbrev_number, bytes_read, i, offset; | |
5525 | struct abbrev_info *abbrev; | |
5526 | struct die_info *die; | |
5527 | ||
6502dd73 | 5528 | offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
5529 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5530 | info_ptr += bytes_read; | |
5531 | if (!abbrev_number) | |
5532 | { | |
5533 | die = dwarf_alloc_die (); | |
5534 | die->tag = 0; | |
5535 | die->abbrev = abbrev_number; | |
5536 | die->type = NULL; | |
5537 | *diep = die; | |
639d11d3 | 5538 | *has_children = 0; |
c906108c SS |
5539 | return info_ptr; |
5540 | } | |
5541 | ||
e7c27a73 | 5542 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
5543 | if (!abbrev) |
5544 | { | |
639d11d3 | 5545 | error ("Dwarf Error: could not find abbrev number %d [in module %s]", |
72bf9492 | 5546 | abbrev_number, |
639d11d3 | 5547 | bfd_get_filename (abfd)); |
c906108c SS |
5548 | } |
5549 | die = dwarf_alloc_die (); | |
5550 | die->offset = offset; | |
5551 | die->tag = abbrev->tag; | |
c906108c SS |
5552 | die->abbrev = abbrev_number; |
5553 | die->type = NULL; | |
5554 | ||
5555 | die->num_attrs = abbrev->num_attrs; | |
5556 | die->attrs = (struct attribute *) | |
5557 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
5558 | ||
5559 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5560 | { | |
5561 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 5562 | abfd, info_ptr, cu); |
10b3939b DJ |
5563 | |
5564 | /* If this attribute is an absolute reference to a different | |
5565 | compilation unit, make sure that compilation unit is loaded | |
5566 | also. */ | |
5567 | if (die->attrs[i].form == DW_FORM_ref_addr | |
5568 | && (DW_ADDR (&die->attrs[i]) < cu->header.offset | |
5569 | || (DW_ADDR (&die->attrs[i]) | |
5570 | >= cu->header.offset + cu->header.length))) | |
5571 | { | |
5572 | struct dwarf2_per_cu_data *per_cu; | |
5573 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (&die->attrs[i]), | |
5574 | cu->objfile); | |
5575 | ||
5576 | /* Mark the dependence relation so that we don't flush PER_CU | |
5577 | too early. */ | |
5578 | dwarf2_add_dependence (cu, per_cu); | |
5579 | ||
5580 | /* If it's already on the queue, we have nothing to do. */ | |
5581 | if (per_cu->queued) | |
5582 | continue; | |
5583 | ||
5584 | /* If the compilation unit is already loaded, just mark it as | |
5585 | used. */ | |
5586 | if (per_cu->cu != NULL) | |
5587 | { | |
5588 | per_cu->cu->last_used = 0; | |
5589 | continue; | |
5590 | } | |
5591 | ||
5592 | /* Add it to the queue. */ | |
5593 | queue_comp_unit (per_cu); | |
5594 | } | |
c906108c SS |
5595 | } |
5596 | ||
5597 | *diep = die; | |
639d11d3 | 5598 | *has_children = abbrev->has_children; |
c906108c SS |
5599 | return info_ptr; |
5600 | } | |
5601 | ||
a8329558 | 5602 | /* Read an attribute value described by an attribute form. */ |
c906108c SS |
5603 | |
5604 | static char * | |
a8329558 | 5605 | read_attribute_value (struct attribute *attr, unsigned form, |
e7c27a73 DJ |
5606 | bfd *abfd, char *info_ptr, |
5607 | struct dwarf2_cu *cu) | |
c906108c | 5608 | { |
e7c27a73 | 5609 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5610 | unsigned int bytes_read; |
5611 | struct dwarf_block *blk; | |
5612 | ||
a8329558 KW |
5613 | attr->form = form; |
5614 | switch (form) | |
c906108c SS |
5615 | { |
5616 | case DW_FORM_addr: | |
5617 | case DW_FORM_ref_addr: | |
e7c27a73 | 5618 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 5619 | info_ptr += bytes_read; |
c906108c SS |
5620 | break; |
5621 | case DW_FORM_block2: | |
7b5a2f43 | 5622 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5623 | blk->size = read_2_bytes (abfd, info_ptr); |
5624 | info_ptr += 2; | |
5625 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5626 | info_ptr += blk->size; | |
5627 | DW_BLOCK (attr) = blk; | |
5628 | break; | |
5629 | case DW_FORM_block4: | |
7b5a2f43 | 5630 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5631 | blk->size = read_4_bytes (abfd, info_ptr); |
5632 | info_ptr += 4; | |
5633 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5634 | info_ptr += blk->size; | |
5635 | DW_BLOCK (attr) = blk; | |
5636 | break; | |
5637 | case DW_FORM_data2: | |
5638 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
5639 | info_ptr += 2; | |
5640 | break; | |
5641 | case DW_FORM_data4: | |
5642 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
5643 | info_ptr += 4; | |
5644 | break; | |
5645 | case DW_FORM_data8: | |
5646 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
5647 | info_ptr += 8; | |
5648 | break; | |
5649 | case DW_FORM_string: | |
5650 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
5651 | info_ptr += bytes_read; | |
5652 | break; | |
4bdf3d34 JJ |
5653 | case DW_FORM_strp: |
5654 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
5655 | &bytes_read); | |
5656 | info_ptr += bytes_read; | |
5657 | break; | |
c906108c | 5658 | case DW_FORM_block: |
7b5a2f43 | 5659 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5660 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5661 | info_ptr += bytes_read; | |
5662 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5663 | info_ptr += blk->size; | |
5664 | DW_BLOCK (attr) = blk; | |
5665 | break; | |
5666 | case DW_FORM_block1: | |
7b5a2f43 | 5667 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5668 | blk->size = read_1_byte (abfd, info_ptr); |
5669 | info_ptr += 1; | |
5670 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5671 | info_ptr += blk->size; | |
5672 | DW_BLOCK (attr) = blk; | |
5673 | break; | |
5674 | case DW_FORM_data1: | |
5675 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
5676 | info_ptr += 1; | |
5677 | break; | |
5678 | case DW_FORM_flag: | |
5679 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
5680 | info_ptr += 1; | |
5681 | break; | |
5682 | case DW_FORM_sdata: | |
5683 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
5684 | info_ptr += bytes_read; | |
5685 | break; | |
5686 | case DW_FORM_udata: | |
5687 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5688 | info_ptr += bytes_read; | |
5689 | break; | |
5690 | case DW_FORM_ref1: | |
10b3939b | 5691 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
5692 | info_ptr += 1; |
5693 | break; | |
5694 | case DW_FORM_ref2: | |
10b3939b | 5695 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
5696 | info_ptr += 2; |
5697 | break; | |
5698 | case DW_FORM_ref4: | |
10b3939b | 5699 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
5700 | info_ptr += 4; |
5701 | break; | |
613e1657 | 5702 | case DW_FORM_ref8: |
10b3939b | 5703 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
5704 | info_ptr += 8; |
5705 | break; | |
c906108c | 5706 | case DW_FORM_ref_udata: |
10b3939b DJ |
5707 | DW_ADDR (attr) = (cu->header.offset |
5708 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
5709 | info_ptr += bytes_read; |
5710 | break; | |
c906108c | 5711 | case DW_FORM_indirect: |
a8329558 KW |
5712 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5713 | info_ptr += bytes_read; | |
e7c27a73 | 5714 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 5715 | break; |
c906108c | 5716 | default: |
659b0389 ML |
5717 | error ("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]", |
5718 | dwarf_form_name (form), | |
5719 | bfd_get_filename (abfd)); | |
c906108c SS |
5720 | } |
5721 | return info_ptr; | |
5722 | } | |
5723 | ||
a8329558 KW |
5724 | /* Read an attribute described by an abbreviated attribute. */ |
5725 | ||
5726 | static char * | |
5727 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, | |
e7c27a73 | 5728 | bfd *abfd, char *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
5729 | { |
5730 | attr->name = abbrev->name; | |
e7c27a73 | 5731 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
5732 | } |
5733 | ||
c906108c SS |
5734 | /* read dwarf information from a buffer */ |
5735 | ||
5736 | static unsigned int | |
fba45db2 | 5737 | read_1_byte (bfd *abfd, char *buf) |
c906108c SS |
5738 | { |
5739 | return bfd_get_8 (abfd, (bfd_byte *) buf); | |
5740 | } | |
5741 | ||
5742 | static int | |
fba45db2 | 5743 | read_1_signed_byte (bfd *abfd, char *buf) |
c906108c SS |
5744 | { |
5745 | return bfd_get_signed_8 (abfd, (bfd_byte *) buf); | |
5746 | } | |
5747 | ||
5748 | static unsigned int | |
fba45db2 | 5749 | read_2_bytes (bfd *abfd, char *buf) |
c906108c SS |
5750 | { |
5751 | return bfd_get_16 (abfd, (bfd_byte *) buf); | |
5752 | } | |
5753 | ||
5754 | static int | |
fba45db2 | 5755 | read_2_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
5756 | { |
5757 | return bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
5758 | } | |
5759 | ||
5760 | static unsigned int | |
fba45db2 | 5761 | read_4_bytes (bfd *abfd, char *buf) |
c906108c SS |
5762 | { |
5763 | return bfd_get_32 (abfd, (bfd_byte *) buf); | |
5764 | } | |
5765 | ||
5766 | static int | |
fba45db2 | 5767 | read_4_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
5768 | { |
5769 | return bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
5770 | } | |
5771 | ||
ce5d95e1 | 5772 | static unsigned long |
fba45db2 | 5773 | read_8_bytes (bfd *abfd, char *buf) |
c906108c SS |
5774 | { |
5775 | return bfd_get_64 (abfd, (bfd_byte *) buf); | |
5776 | } | |
5777 | ||
5778 | static CORE_ADDR | |
e7c27a73 | 5779 | read_address (bfd *abfd, char *buf, struct dwarf2_cu *cu, int *bytes_read) |
c906108c | 5780 | { |
e7c27a73 | 5781 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5782 | CORE_ADDR retval = 0; |
5783 | ||
107d2387 | 5784 | if (cu_header->signed_addr_p) |
c906108c | 5785 | { |
107d2387 AC |
5786 | switch (cu_header->addr_size) |
5787 | { | |
5788 | case 2: | |
5789 | retval = bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
5790 | break; | |
5791 | case 4: | |
5792 | retval = bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
5793 | break; | |
5794 | case 8: | |
5795 | retval = bfd_get_signed_64 (abfd, (bfd_byte *) buf); | |
5796 | break; | |
5797 | default: | |
8e65ff28 | 5798 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
5799 | "read_address: bad switch, signed [in module %s]", |
5800 | bfd_get_filename (abfd)); | |
107d2387 AC |
5801 | } |
5802 | } | |
5803 | else | |
5804 | { | |
5805 | switch (cu_header->addr_size) | |
5806 | { | |
5807 | case 2: | |
5808 | retval = bfd_get_16 (abfd, (bfd_byte *) buf); | |
5809 | break; | |
5810 | case 4: | |
5811 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
5812 | break; | |
5813 | case 8: | |
5814 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
5815 | break; | |
5816 | default: | |
8e65ff28 | 5817 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
5818 | "read_address: bad switch, unsigned [in module %s]", |
5819 | bfd_get_filename (abfd)); | |
107d2387 | 5820 | } |
c906108c | 5821 | } |
64367e0a | 5822 | |
107d2387 AC |
5823 | *bytes_read = cu_header->addr_size; |
5824 | return retval; | |
c906108c SS |
5825 | } |
5826 | ||
f7ef9339 | 5827 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
5828 | specification allows the initial length to take up either 4 bytes |
5829 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
5830 | bytes describe the length and all offsets will be 8 bytes in length | |
5831 | instead of 4. | |
5832 | ||
f7ef9339 KB |
5833 | An older, non-standard 64-bit format is also handled by this |
5834 | function. The older format in question stores the initial length | |
5835 | as an 8-byte quantity without an escape value. Lengths greater | |
5836 | than 2^32 aren't very common which means that the initial 4 bytes | |
5837 | is almost always zero. Since a length value of zero doesn't make | |
5838 | sense for the 32-bit format, this initial zero can be considered to | |
5839 | be an escape value which indicates the presence of the older 64-bit | |
5840 | format. As written, the code can't detect (old format) lengths | |
5841 | greater than 4GB. If it becomes necessary to handle lengths somewhat | |
5842 | larger than 4GB, we could allow other small values (such as the | |
5843 | non-sensical values of 1, 2, and 3) to also be used as escape values | |
5844 | indicating the presence of the old format. | |
5845 | ||
613e1657 KB |
5846 | The value returned via bytes_read should be used to increment |
5847 | the relevant pointer after calling read_initial_length(). | |
5848 | ||
5849 | As a side effect, this function sets the fields initial_length_size | |
5850 | and offset_size in cu_header to the values appropriate for the | |
5851 | length field. (The format of the initial length field determines | |
5852 | the width of file offsets to be fetched later with fetch_offset().) | |
5853 | ||
5854 | [ Note: read_initial_length() and read_offset() are based on the | |
5855 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 5856 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
5857 | from: |
5858 | ||
f7ef9339 | 5859 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
5860 | |
5861 | This document is only a draft and is subject to change. (So beware.) | |
5862 | ||
f7ef9339 KB |
5863 | Details regarding the older, non-standard 64-bit format were |
5864 | determined empirically by examining 64-bit ELF files produced | |
5865 | by the SGI toolchain on an IRIX 6.5 machine. | |
5866 | ||
5867 | - Kevin, July 16, 2002 | |
613e1657 KB |
5868 | ] */ |
5869 | ||
5870 | static LONGEST | |
5871 | read_initial_length (bfd *abfd, char *buf, struct comp_unit_head *cu_header, | |
5872 | int *bytes_read) | |
5873 | { | |
5874 | LONGEST retval = 0; | |
5875 | ||
5876 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
5877 | ||
5878 | if (retval == 0xffffffff) | |
5879 | { | |
5880 | retval = bfd_get_64 (abfd, (bfd_byte *) buf + 4); | |
5881 | *bytes_read = 12; | |
5882 | if (cu_header != NULL) | |
5883 | { | |
5884 | cu_header->initial_length_size = 12; | |
5885 | cu_header->offset_size = 8; | |
5886 | } | |
5887 | } | |
f7ef9339 KB |
5888 | else if (retval == 0) |
5889 | { | |
5890 | /* Handle (non-standard) 64-bit DWARF2 formats such as that used | |
5891 | by IRIX. */ | |
5892 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
5893 | *bytes_read = 8; | |
5894 | if (cu_header != NULL) | |
5895 | { | |
5896 | cu_header->initial_length_size = 8; | |
5897 | cu_header->offset_size = 8; | |
5898 | } | |
5899 | } | |
613e1657 KB |
5900 | else |
5901 | { | |
5902 | *bytes_read = 4; | |
5903 | if (cu_header != NULL) | |
5904 | { | |
5905 | cu_header->initial_length_size = 4; | |
5906 | cu_header->offset_size = 4; | |
5907 | } | |
5908 | } | |
5909 | ||
5910 | return retval; | |
5911 | } | |
5912 | ||
5913 | /* Read an offset from the data stream. The size of the offset is | |
5914 | given by cu_header->offset_size. */ | |
5915 | ||
5916 | static LONGEST | |
5917 | read_offset (bfd *abfd, char *buf, const struct comp_unit_head *cu_header, | |
5918 | int *bytes_read) | |
5919 | { | |
5920 | LONGEST retval = 0; | |
5921 | ||
5922 | switch (cu_header->offset_size) | |
5923 | { | |
5924 | case 4: | |
5925 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
5926 | *bytes_read = 4; | |
5927 | break; | |
5928 | case 8: | |
5929 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
5930 | *bytes_read = 8; | |
5931 | break; | |
5932 | default: | |
8e65ff28 | 5933 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
5934 | "read_offset: bad switch [in module %s]", |
5935 | bfd_get_filename (abfd)); | |
613e1657 KB |
5936 | } |
5937 | ||
5938 | return retval; | |
5939 | } | |
5940 | ||
c906108c | 5941 | static char * |
fba45db2 | 5942 | read_n_bytes (bfd *abfd, char *buf, unsigned int size) |
c906108c SS |
5943 | { |
5944 | /* If the size of a host char is 8 bits, we can return a pointer | |
5945 | to the buffer, otherwise we have to copy the data to a buffer | |
5946 | allocated on the temporary obstack. */ | |
4bdf3d34 | 5947 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 5948 | return buf; |
c906108c SS |
5949 | } |
5950 | ||
5951 | static char * | |
fba45db2 | 5952 | read_string (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
5953 | { |
5954 | /* If the size of a host char is 8 bits, we can return a pointer | |
5955 | to the string, otherwise we have to copy the string to a buffer | |
5956 | allocated on the temporary obstack. */ | |
4bdf3d34 | 5957 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
5958 | if (*buf == '\0') |
5959 | { | |
5960 | *bytes_read_ptr = 1; | |
5961 | return NULL; | |
5962 | } | |
5963 | *bytes_read_ptr = strlen (buf) + 1; | |
5964 | return buf; | |
4bdf3d34 JJ |
5965 | } |
5966 | ||
5967 | static char * | |
5968 | read_indirect_string (bfd *abfd, char *buf, | |
5969 | const struct comp_unit_head *cu_header, | |
5970 | unsigned int *bytes_read_ptr) | |
5971 | { | |
5972 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
5973 | (int *) bytes_read_ptr); | |
c906108c | 5974 | |
6502dd73 | 5975 | if (dwarf2_per_objfile->str_buffer == NULL) |
c906108c | 5976 | { |
659b0389 ML |
5977 | error ("DW_FORM_strp used without .debug_str section [in module %s]", |
5978 | bfd_get_filename (abfd)); | |
4bdf3d34 | 5979 | return NULL; |
c906108c | 5980 | } |
6502dd73 | 5981 | if (str_offset >= dwarf2_per_objfile->str_size) |
c906108c | 5982 | { |
659b0389 ML |
5983 | error ("DW_FORM_strp pointing outside of .debug_str section [in module %s]", |
5984 | bfd_get_filename (abfd)); | |
c906108c SS |
5985 | return NULL; |
5986 | } | |
4bdf3d34 | 5987 | gdb_assert (HOST_CHAR_BIT == 8); |
6502dd73 | 5988 | if (dwarf2_per_objfile->str_buffer[str_offset] == '\0') |
4bdf3d34 | 5989 | return NULL; |
6502dd73 | 5990 | return dwarf2_per_objfile->str_buffer + str_offset; |
c906108c SS |
5991 | } |
5992 | ||
ce5d95e1 | 5993 | static unsigned long |
fba45db2 | 5994 | read_unsigned_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 5995 | { |
ce5d95e1 JB |
5996 | unsigned long result; |
5997 | unsigned int num_read; | |
c906108c SS |
5998 | int i, shift; |
5999 | unsigned char byte; | |
6000 | ||
6001 | result = 0; | |
6002 | shift = 0; | |
6003 | num_read = 0; | |
6004 | i = 0; | |
6005 | while (1) | |
6006 | { | |
6007 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
6008 | buf++; | |
6009 | num_read++; | |
ce5d95e1 | 6010 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
6011 | if ((byte & 128) == 0) |
6012 | { | |
6013 | break; | |
6014 | } | |
6015 | shift += 7; | |
6016 | } | |
6017 | *bytes_read_ptr = num_read; | |
6018 | return result; | |
6019 | } | |
6020 | ||
ce5d95e1 | 6021 | static long |
fba45db2 | 6022 | read_signed_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 6023 | { |
ce5d95e1 | 6024 | long result; |
c906108c SS |
6025 | int i, shift, size, num_read; |
6026 | unsigned char byte; | |
6027 | ||
6028 | result = 0; | |
6029 | shift = 0; | |
6030 | size = 32; | |
6031 | num_read = 0; | |
6032 | i = 0; | |
6033 | while (1) | |
6034 | { | |
6035 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
6036 | buf++; | |
6037 | num_read++; | |
ce5d95e1 | 6038 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
6039 | shift += 7; |
6040 | if ((byte & 128) == 0) | |
6041 | { | |
6042 | break; | |
6043 | } | |
6044 | } | |
6045 | if ((shift < size) && (byte & 0x40)) | |
6046 | { | |
6047 | result |= -(1 << shift); | |
6048 | } | |
6049 | *bytes_read_ptr = num_read; | |
6050 | return result; | |
6051 | } | |
6052 | ||
4bb7a0a7 DJ |
6053 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
6054 | ||
6055 | static char * | |
6056 | skip_leb128 (bfd *abfd, char *buf) | |
6057 | { | |
6058 | int byte; | |
6059 | ||
6060 | while (1) | |
6061 | { | |
6062 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
6063 | buf++; | |
6064 | if ((byte & 128) == 0) | |
6065 | return buf; | |
6066 | } | |
6067 | } | |
6068 | ||
c906108c | 6069 | static void |
e142c38c | 6070 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
6071 | { |
6072 | switch (lang) | |
6073 | { | |
6074 | case DW_LANG_C89: | |
6075 | case DW_LANG_C: | |
e142c38c | 6076 | cu->language = language_c; |
c906108c SS |
6077 | break; |
6078 | case DW_LANG_C_plus_plus: | |
e142c38c | 6079 | cu->language = language_cplus; |
c906108c SS |
6080 | break; |
6081 | case DW_LANG_Fortran77: | |
6082 | case DW_LANG_Fortran90: | |
b21b22e0 | 6083 | case DW_LANG_Fortran95: |
e142c38c | 6084 | cu->language = language_fortran; |
c906108c SS |
6085 | break; |
6086 | case DW_LANG_Mips_Assembler: | |
e142c38c | 6087 | cu->language = language_asm; |
c906108c | 6088 | break; |
bebd888e | 6089 | case DW_LANG_Java: |
e142c38c | 6090 | cu->language = language_java; |
bebd888e | 6091 | break; |
c906108c | 6092 | case DW_LANG_Ada83: |
8aaf0b47 | 6093 | case DW_LANG_Ada95: |
bc5f45f8 JB |
6094 | cu->language = language_ada; |
6095 | break; | |
c906108c SS |
6096 | case DW_LANG_Cobol74: |
6097 | case DW_LANG_Cobol85: | |
6098 | case DW_LANG_Pascal83: | |
6099 | case DW_LANG_Modula2: | |
6100 | default: | |
e142c38c | 6101 | cu->language = language_minimal; |
c906108c SS |
6102 | break; |
6103 | } | |
e142c38c | 6104 | cu->language_defn = language_def (cu->language); |
c906108c SS |
6105 | } |
6106 | ||
6107 | /* Return the named attribute or NULL if not there. */ | |
6108 | ||
6109 | static struct attribute * | |
e142c38c | 6110 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
6111 | { |
6112 | unsigned int i; | |
6113 | struct attribute *spec = NULL; | |
6114 | ||
6115 | for (i = 0; i < die->num_attrs; ++i) | |
6116 | { | |
6117 | if (die->attrs[i].name == name) | |
10b3939b | 6118 | return &die->attrs[i]; |
c906108c SS |
6119 | if (die->attrs[i].name == DW_AT_specification |
6120 | || die->attrs[i].name == DW_AT_abstract_origin) | |
6121 | spec = &die->attrs[i]; | |
6122 | } | |
c906108c | 6123 | |
10b3939b DJ |
6124 | if (spec) |
6125 | return dwarf2_attr (follow_die_ref (die, spec, cu), name, cu); | |
c5aa993b | 6126 | |
c906108c SS |
6127 | return NULL; |
6128 | } | |
6129 | ||
05cf31d1 JB |
6130 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
6131 | and holds a non-zero value. This function should only be used for | |
6132 | DW_FORM_flag attributes. */ | |
6133 | ||
6134 | static int | |
6135 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
6136 | { | |
6137 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
6138 | ||
6139 | return (attr && DW_UNSND (attr)); | |
6140 | } | |
6141 | ||
3ca72b44 | 6142 | static int |
e142c38c | 6143 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 6144 | { |
05cf31d1 JB |
6145 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
6146 | which value is non-zero. However, we have to be careful with | |
6147 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
6148 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
6149 | end up accidently finding a declaration attribute that belongs | |
6150 | to a different DIE referenced by the specification attribute, | |
6151 | even though the given DIE does not have a declaration attribute. */ | |
6152 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
6153 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
6154 | } |
6155 | ||
63d06c5c DC |
6156 | /* Return the die giving the specification for DIE, if there is |
6157 | one. */ | |
6158 | ||
6159 | static struct die_info * | |
e142c38c | 6160 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 6161 | { |
e142c38c | 6162 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
6163 | |
6164 | if (spec_attr == NULL) | |
6165 | return NULL; | |
6166 | else | |
10b3939b | 6167 | return follow_die_ref (die, spec_attr, cu); |
63d06c5c | 6168 | } |
c906108c | 6169 | |
debd256d JB |
6170 | /* Free the line_header structure *LH, and any arrays and strings it |
6171 | refers to. */ | |
6172 | static void | |
6173 | free_line_header (struct line_header *lh) | |
6174 | { | |
6175 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 6176 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
6177 | |
6178 | /* Remember that all the lh->file_names[i].name pointers are | |
6179 | pointers into debug_line_buffer, and don't need to be freed. */ | |
6180 | if (lh->file_names) | |
a8bc7b56 | 6181 | xfree (lh->file_names); |
debd256d JB |
6182 | |
6183 | /* Similarly for the include directory names. */ | |
6184 | if (lh->include_dirs) | |
a8bc7b56 | 6185 | xfree (lh->include_dirs); |
debd256d | 6186 | |
a8bc7b56 | 6187 | xfree (lh); |
debd256d JB |
6188 | } |
6189 | ||
6190 | ||
6191 | /* Add an entry to LH's include directory table. */ | |
6192 | static void | |
6193 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 6194 | { |
debd256d JB |
6195 | /* Grow the array if necessary. */ |
6196 | if (lh->include_dirs_size == 0) | |
c5aa993b | 6197 | { |
debd256d JB |
6198 | lh->include_dirs_size = 1; /* for testing */ |
6199 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
6200 | * sizeof (*lh->include_dirs)); | |
6201 | } | |
6202 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
6203 | { | |
6204 | lh->include_dirs_size *= 2; | |
6205 | lh->include_dirs = xrealloc (lh->include_dirs, | |
6206 | (lh->include_dirs_size | |
6207 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 6208 | } |
c906108c | 6209 | |
debd256d JB |
6210 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
6211 | } | |
6212 | ||
6213 | ||
6214 | /* Add an entry to LH's file name table. */ | |
6215 | static void | |
6216 | add_file_name (struct line_header *lh, | |
6217 | char *name, | |
6218 | unsigned int dir_index, | |
6219 | unsigned int mod_time, | |
6220 | unsigned int length) | |
6221 | { | |
6222 | struct file_entry *fe; | |
6223 | ||
6224 | /* Grow the array if necessary. */ | |
6225 | if (lh->file_names_size == 0) | |
6226 | { | |
6227 | lh->file_names_size = 1; /* for testing */ | |
6228 | lh->file_names = xmalloc (lh->file_names_size | |
6229 | * sizeof (*lh->file_names)); | |
6230 | } | |
6231 | else if (lh->num_file_names >= lh->file_names_size) | |
6232 | { | |
6233 | lh->file_names_size *= 2; | |
6234 | lh->file_names = xrealloc (lh->file_names, | |
6235 | (lh->file_names_size | |
6236 | * sizeof (*lh->file_names))); | |
6237 | } | |
6238 | ||
6239 | fe = &lh->file_names[lh->num_file_names++]; | |
6240 | fe->name = name; | |
6241 | fe->dir_index = dir_index; | |
6242 | fe->mod_time = mod_time; | |
6243 | fe->length = length; | |
aaa75496 | 6244 | fe->included_p = 0; |
debd256d JB |
6245 | } |
6246 | ||
6247 | ||
6248 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
6249 | .debug_line, according to the endianness of ABFD. Return a pointer |
6250 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
6251 | |
6252 | NOTE: the strings in the include directory and file name tables of | |
6253 | the returned object point into debug_line_buffer, and must not be | |
6254 | freed. */ | |
6255 | static struct line_header * | |
6256 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 6257 | struct dwarf2_cu *cu) |
debd256d JB |
6258 | { |
6259 | struct cleanup *back_to; | |
6260 | struct line_header *lh; | |
6261 | char *line_ptr; | |
6262 | int bytes_read; | |
6263 | int i; | |
6264 | char *cur_dir, *cur_file; | |
6265 | ||
6502dd73 | 6266 | if (dwarf2_per_objfile->line_buffer == NULL) |
debd256d | 6267 | { |
4d3c2250 | 6268 | complaint (&symfile_complaints, "missing .debug_line section"); |
debd256d JB |
6269 | return 0; |
6270 | } | |
6271 | ||
a738430d MK |
6272 | /* Make sure that at least there's room for the total_length field. |
6273 | That could be 12 bytes long, but we're just going to fudge that. */ | |
6502dd73 | 6274 | if (offset + 4 >= dwarf2_per_objfile->line_size) |
debd256d | 6275 | { |
4d3c2250 | 6276 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6277 | return 0; |
6278 | } | |
6279 | ||
6280 | lh = xmalloc (sizeof (*lh)); | |
6281 | memset (lh, 0, sizeof (*lh)); | |
6282 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
6283 | (void *) lh); | |
6284 | ||
6502dd73 | 6285 | line_ptr = dwarf2_per_objfile->line_buffer + offset; |
debd256d | 6286 | |
a738430d | 6287 | /* Read in the header. */ |
debd256d JB |
6288 | lh->total_length = read_initial_length (abfd, line_ptr, NULL, &bytes_read); |
6289 | line_ptr += bytes_read; | |
6502dd73 DJ |
6290 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line_buffer |
6291 | + dwarf2_per_objfile->line_size)) | |
debd256d | 6292 | { |
4d3c2250 | 6293 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6294 | return 0; |
6295 | } | |
6296 | lh->statement_program_end = line_ptr + lh->total_length; | |
6297 | lh->version = read_2_bytes (abfd, line_ptr); | |
6298 | line_ptr += 2; | |
e7c27a73 | 6299 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
6300 | line_ptr += bytes_read; |
6301 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
6302 | line_ptr += 1; | |
6303 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
6304 | line_ptr += 1; | |
6305 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
6306 | line_ptr += 1; | |
6307 | lh->line_range = read_1_byte (abfd, line_ptr); | |
6308 | line_ptr += 1; | |
6309 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
6310 | line_ptr += 1; | |
6311 | lh->standard_opcode_lengths | |
6312 | = (unsigned char *) xmalloc (lh->opcode_base * sizeof (unsigned char)); | |
6313 | ||
6314 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
6315 | for (i = 1; i < lh->opcode_base; ++i) | |
6316 | { | |
6317 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
6318 | line_ptr += 1; | |
6319 | } | |
6320 | ||
a738430d | 6321 | /* Read directory table. */ |
debd256d JB |
6322 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6323 | { | |
6324 | line_ptr += bytes_read; | |
6325 | add_include_dir (lh, cur_dir); | |
6326 | } | |
6327 | line_ptr += bytes_read; | |
6328 | ||
a738430d | 6329 | /* Read file name table. */ |
debd256d JB |
6330 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6331 | { | |
6332 | unsigned int dir_index, mod_time, length; | |
6333 | ||
6334 | line_ptr += bytes_read; | |
6335 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6336 | line_ptr += bytes_read; | |
6337 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6338 | line_ptr += bytes_read; | |
6339 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6340 | line_ptr += bytes_read; | |
6341 | ||
6342 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6343 | } | |
6344 | line_ptr += bytes_read; | |
6345 | lh->statement_program_start = line_ptr; | |
6346 | ||
6502dd73 DJ |
6347 | if (line_ptr > (dwarf2_per_objfile->line_buffer |
6348 | + dwarf2_per_objfile->line_size)) | |
4d3c2250 KB |
6349 | complaint (&symfile_complaints, |
6350 | "line number info header doesn't fit in `.debug_line' section"); | |
debd256d JB |
6351 | |
6352 | discard_cleanups (back_to); | |
6353 | return lh; | |
6354 | } | |
c906108c | 6355 | |
5fb290d7 DJ |
6356 | /* This function exists to work around a bug in certain compilers |
6357 | (particularly GCC 2.95), in which the first line number marker of a | |
6358 | function does not show up until after the prologue, right before | |
6359 | the second line number marker. This function shifts ADDRESS down | |
6360 | to the beginning of the function if necessary, and is called on | |
6361 | addresses passed to record_line. */ | |
6362 | ||
6363 | static CORE_ADDR | |
e142c38c | 6364 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
6365 | { |
6366 | struct function_range *fn; | |
6367 | ||
6368 | /* Find the function_range containing address. */ | |
e142c38c | 6369 | if (!cu->first_fn) |
5fb290d7 DJ |
6370 | return address; |
6371 | ||
e142c38c DJ |
6372 | if (!cu->cached_fn) |
6373 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 6374 | |
e142c38c | 6375 | fn = cu->cached_fn; |
5fb290d7 DJ |
6376 | while (fn) |
6377 | if (fn->lowpc <= address && fn->highpc > address) | |
6378 | goto found; | |
6379 | else | |
6380 | fn = fn->next; | |
6381 | ||
e142c38c DJ |
6382 | fn = cu->first_fn; |
6383 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
6384 | if (fn->lowpc <= address && fn->highpc > address) |
6385 | goto found; | |
6386 | else | |
6387 | fn = fn->next; | |
6388 | ||
6389 | return address; | |
6390 | ||
6391 | found: | |
6392 | if (fn->seen_line) | |
6393 | return address; | |
6394 | if (address != fn->lowpc) | |
4d3c2250 KB |
6395 | complaint (&symfile_complaints, |
6396 | "misplaced first line number at 0x%lx for '%s'", | |
6397 | (unsigned long) address, fn->name); | |
5fb290d7 DJ |
6398 | fn->seen_line = 1; |
6399 | return fn->lowpc; | |
6400 | } | |
6401 | ||
aaa75496 JB |
6402 | /* Decode the Line Number Program (LNP) for the given line_header |
6403 | structure and CU. The actual information extracted and the type | |
6404 | of structures created from the LNP depends on the value of PST. | |
6405 | ||
6406 | 1. If PST is NULL, then this procedure uses the data from the program | |
6407 | to create all necessary symbol tables, and their linetables. | |
6408 | The compilation directory of the file is passed in COMP_DIR, | |
6409 | and must not be NULL. | |
6410 | ||
6411 | 2. If PST is not NULL, this procedure reads the program to determine | |
6412 | the list of files included by the unit represented by PST, and | |
6413 | builds all the associated partial symbol tables. In this case, | |
6414 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
6415 | is not used to compute the full name of the symtab, and therefore | |
6416 | omitting it when building the partial symtab does not introduce | |
6417 | the potential for inconsistency - a partial symtab and its associated | |
6418 | symbtab having a different fullname -). */ | |
debd256d | 6419 | |
c906108c | 6420 | static void |
debd256d | 6421 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 6422 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c SS |
6423 | { |
6424 | char *line_ptr; | |
6425 | char *line_end; | |
e7c27a73 | 6426 | unsigned int bytes_read; |
c906108c | 6427 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
6428 | CORE_ADDR baseaddr; |
6429 | struct objfile *objfile = cu->objfile; | |
aaa75496 | 6430 | const int decode_for_pst_p = (pst != NULL); |
e142c38c DJ |
6431 | |
6432 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6433 | |
debd256d JB |
6434 | line_ptr = lh->statement_program_start; |
6435 | line_end = lh->statement_program_end; | |
c906108c SS |
6436 | |
6437 | /* Read the statement sequences until there's nothing left. */ | |
6438 | while (line_ptr < line_end) | |
6439 | { | |
6440 | /* state machine registers */ | |
6441 | CORE_ADDR address = 0; | |
6442 | unsigned int file = 1; | |
6443 | unsigned int line = 1; | |
6444 | unsigned int column = 0; | |
debd256d | 6445 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
6446 | int basic_block = 0; |
6447 | int end_sequence = 0; | |
6448 | ||
aaa75496 | 6449 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 6450 | { |
aaa75496 | 6451 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
6452 | /* lh->include_dirs and lh->file_names are 0-based, but the |
6453 | directory and file name numbers in the statement program | |
6454 | are 1-based. */ | |
6455 | struct file_entry *fe = &lh->file_names[file - 1]; | |
6456 | char *dir; | |
a738430d | 6457 | |
debd256d JB |
6458 | if (fe->dir_index) |
6459 | dir = lh->include_dirs[fe->dir_index - 1]; | |
6460 | else | |
6461 | dir = comp_dir; | |
6462 | dwarf2_start_subfile (fe->name, dir); | |
c906108c SS |
6463 | } |
6464 | ||
a738430d | 6465 | /* Decode the table. */ |
c5aa993b | 6466 | while (!end_sequence) |
c906108c SS |
6467 | { |
6468 | op_code = read_1_byte (abfd, line_ptr); | |
6469 | line_ptr += 1; | |
9aa1fe7e | 6470 | |
debd256d | 6471 | if (op_code >= lh->opcode_base) |
a738430d MK |
6472 | { |
6473 | /* Special operand. */ | |
debd256d JB |
6474 | adj_opcode = op_code - lh->opcode_base; |
6475 | address += (adj_opcode / lh->line_range) | |
6476 | * lh->minimum_instruction_length; | |
6477 | line += lh->line_base + (adj_opcode % lh->line_range); | |
aa495d11 | 6478 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6479 | if (!decode_for_pst_p) |
6480 | { | |
a738430d | 6481 | /* Append row to matrix using current values. */ |
aaa75496 JB |
6482 | record_line (current_subfile, line, |
6483 | check_cu_functions (address, cu)); | |
6484 | } | |
9aa1fe7e GK |
6485 | basic_block = 1; |
6486 | } | |
6487 | else switch (op_code) | |
c906108c SS |
6488 | { |
6489 | case DW_LNS_extended_op: | |
473b7be6 DJ |
6490 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6491 | line_ptr += bytes_read; | |
c906108c SS |
6492 | extended_op = read_1_byte (abfd, line_ptr); |
6493 | line_ptr += 1; | |
6494 | switch (extended_op) | |
6495 | { | |
6496 | case DW_LNE_end_sequence: | |
6497 | end_sequence = 1; | |
aa495d11 | 6498 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6499 | if (!decode_for_pst_p) |
6500 | record_line (current_subfile, 0, address); | |
c906108c SS |
6501 | break; |
6502 | case DW_LNE_set_address: | |
e7c27a73 | 6503 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
6504 | line_ptr += bytes_read; |
6505 | address += baseaddr; | |
c906108c SS |
6506 | break; |
6507 | case DW_LNE_define_file: | |
debd256d JB |
6508 | { |
6509 | char *cur_file; | |
6510 | unsigned int dir_index, mod_time, length; | |
6511 | ||
6512 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
6513 | line_ptr += bytes_read; | |
6514 | dir_index = | |
6515 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6516 | line_ptr += bytes_read; | |
6517 | mod_time = | |
6518 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6519 | line_ptr += bytes_read; | |
6520 | length = | |
6521 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6522 | line_ptr += bytes_read; | |
6523 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6524 | } | |
c906108c SS |
6525 | break; |
6526 | default: | |
4d3c2250 KB |
6527 | complaint (&symfile_complaints, |
6528 | "mangled .debug_line section"); | |
debd256d | 6529 | return; |
c906108c SS |
6530 | } |
6531 | break; | |
6532 | case DW_LNS_copy: | |
aa495d11 | 6533 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6534 | if (!decode_for_pst_p) |
6535 | record_line (current_subfile, line, | |
6536 | check_cu_functions (address, cu)); | |
c906108c SS |
6537 | basic_block = 0; |
6538 | break; | |
6539 | case DW_LNS_advance_pc: | |
debd256d | 6540 | address += lh->minimum_instruction_length |
c906108c SS |
6541 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6542 | line_ptr += bytes_read; | |
6543 | break; | |
6544 | case DW_LNS_advance_line: | |
6545 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
6546 | line_ptr += bytes_read; | |
6547 | break; | |
6548 | case DW_LNS_set_file: | |
debd256d | 6549 | { |
a738430d MK |
6550 | /* The arrays lh->include_dirs and lh->file_names are |
6551 | 0-based, but the directory and file name numbers in | |
6552 | the statement program are 1-based. */ | |
debd256d JB |
6553 | struct file_entry *fe; |
6554 | char *dir; | |
a738430d | 6555 | |
debd256d JB |
6556 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6557 | line_ptr += bytes_read; | |
6558 | fe = &lh->file_names[file - 1]; | |
6559 | if (fe->dir_index) | |
6560 | dir = lh->include_dirs[fe->dir_index - 1]; | |
6561 | else | |
6562 | dir = comp_dir; | |
aaa75496 JB |
6563 | if (!decode_for_pst_p) |
6564 | dwarf2_start_subfile (fe->name, dir); | |
debd256d | 6565 | } |
c906108c SS |
6566 | break; |
6567 | case DW_LNS_set_column: | |
6568 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6569 | line_ptr += bytes_read; | |
6570 | break; | |
6571 | case DW_LNS_negate_stmt: | |
6572 | is_stmt = (!is_stmt); | |
6573 | break; | |
6574 | case DW_LNS_set_basic_block: | |
6575 | basic_block = 1; | |
6576 | break; | |
c2c6d25f JM |
6577 | /* Add to the address register of the state machine the |
6578 | address increment value corresponding to special opcode | |
a738430d MK |
6579 | 255. I.e., this value is scaled by the minimum |
6580 | instruction length since special opcode 255 would have | |
6581 | scaled the the increment. */ | |
c906108c | 6582 | case DW_LNS_const_add_pc: |
debd256d JB |
6583 | address += (lh->minimum_instruction_length |
6584 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
6585 | break; |
6586 | case DW_LNS_fixed_advance_pc: | |
6587 | address += read_2_bytes (abfd, line_ptr); | |
6588 | line_ptr += 2; | |
6589 | break; | |
9aa1fe7e | 6590 | default: |
a738430d MK |
6591 | { |
6592 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 6593 | int i; |
a738430d | 6594 | |
debd256d | 6595 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
6596 | { |
6597 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6598 | line_ptr += bytes_read; | |
6599 | } | |
6600 | } | |
c906108c SS |
6601 | } |
6602 | } | |
6603 | } | |
aaa75496 JB |
6604 | |
6605 | if (decode_for_pst_p) | |
6606 | { | |
6607 | int file_index; | |
6608 | ||
6609 | /* Now that we're done scanning the Line Header Program, we can | |
6610 | create the psymtab of each included file. */ | |
6611 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
6612 | if (lh->file_names[file_index].included_p == 1) | |
6613 | { | |
6614 | char *include_name = lh->file_names [file_index].name; | |
6615 | ||
6616 | if (strcmp (include_name, pst->filename) != 0) | |
6617 | dwarf2_create_include_psymtab (include_name, pst, objfile); | |
6618 | } | |
6619 | } | |
c906108c SS |
6620 | } |
6621 | ||
6622 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
6623 | DIRNAME the name of the source directory which contains FILENAME | |
6624 | or NULL if not known. | |
6625 | This routine tries to keep line numbers from identical absolute and | |
6626 | relative file names in a common subfile. | |
6627 | ||
6628 | Using the `list' example from the GDB testsuite, which resides in | |
6629 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
6630 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
6631 | ||
c5aa993b JM |
6632 | DW_AT_name: /srcdir/list0.c |
6633 | DW_AT_comp_dir: /compdir | |
357e46e7 | 6634 | files.files[0].name: list0.h |
c5aa993b | 6635 | files.files[0].dir: /srcdir |
357e46e7 | 6636 | files.files[1].name: list0.c |
c5aa993b | 6637 | files.files[1].dir: /srcdir |
c906108c SS |
6638 | |
6639 | The line number information for list0.c has to end up in a single | |
6640 | subfile, so that `break /srcdir/list0.c:1' works as expected. */ | |
6641 | ||
6642 | static void | |
fba45db2 | 6643 | dwarf2_start_subfile (char *filename, char *dirname) |
c906108c SS |
6644 | { |
6645 | /* If the filename isn't absolute, try to match an existing subfile | |
6646 | with the full pathname. */ | |
6647 | ||
d5166ae1 | 6648 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
c906108c SS |
6649 | { |
6650 | struct subfile *subfile; | |
6651 | char *fullname = concat (dirname, "/", filename, NULL); | |
6652 | ||
6653 | for (subfile = subfiles; subfile; subfile = subfile->next) | |
6654 | { | |
d5166ae1 | 6655 | if (FILENAME_CMP (subfile->name, fullname) == 0) |
c906108c SS |
6656 | { |
6657 | current_subfile = subfile; | |
b8c9b27d | 6658 | xfree (fullname); |
c906108c SS |
6659 | return; |
6660 | } | |
6661 | } | |
b8c9b27d | 6662 | xfree (fullname); |
c906108c SS |
6663 | } |
6664 | start_subfile (filename, dirname); | |
6665 | } | |
6666 | ||
4c2df51b DJ |
6667 | static void |
6668 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 6669 | struct dwarf2_cu *cu) |
4c2df51b | 6670 | { |
e7c27a73 DJ |
6671 | struct objfile *objfile = cu->objfile; |
6672 | struct comp_unit_head *cu_header = &cu->header; | |
6673 | ||
4c2df51b DJ |
6674 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
6675 | code here to turn a symbol with DW_AT_external and a | |
6676 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
6677 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
6678 | with some versions of binutils) where shared libraries could have | |
6679 | relocations against symbols in their debug information - the | |
6680 | minimal symbol would have the right address, but the debug info | |
6681 | would not. It's no longer necessary, because we will explicitly | |
6682 | apply relocations when we read in the debug information now. */ | |
6683 | ||
6684 | /* A DW_AT_location attribute with no contents indicates that a | |
6685 | variable has been optimized away. */ | |
6686 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
6687 | { | |
6688 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
6689 | return; | |
6690 | } | |
6691 | ||
6692 | /* Handle one degenerate form of location expression specially, to | |
6693 | preserve GDB's previous behavior when section offsets are | |
6694 | specified. If this is just a DW_OP_addr then mark this symbol | |
6695 | as LOC_STATIC. */ | |
6696 | ||
6697 | if (attr_form_is_block (attr) | |
6698 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
6699 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
6700 | { | |
6701 | int dummy; | |
6702 | ||
6703 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 6704 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
6705 | fixup_symbol_section (sym, objfile); |
6706 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
6707 | SYMBOL_SECTION (sym)); | |
6708 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
6709 | return; | |
6710 | } | |
6711 | ||
6712 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
6713 | expression evaluator, and use LOC_COMPUTED only when necessary | |
6714 | (i.e. when the value of a register or memory location is | |
6715 | referenced, or a thread-local block, etc.). Then again, it might | |
6716 | not be worthwhile. I'm assuming that it isn't unless performance | |
6717 | or memory numbers show me otherwise. */ | |
6718 | ||
e7c27a73 | 6719 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
6720 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
6721 | } | |
6722 | ||
c906108c SS |
6723 | /* Given a pointer to a DWARF information entry, figure out if we need |
6724 | to make a symbol table entry for it, and if so, create a new entry | |
6725 | and return a pointer to it. | |
6726 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 6727 | used the passed type. */ |
c906108c SS |
6728 | |
6729 | static struct symbol * | |
e7c27a73 | 6730 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 6731 | { |
e7c27a73 | 6732 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6733 | struct symbol *sym = NULL; |
6734 | char *name; | |
6735 | struct attribute *attr = NULL; | |
6736 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
6737 | CORE_ADDR baseaddr; |
6738 | ||
6739 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6740 | |
5c4e30ca | 6741 | if (die->tag != DW_TAG_namespace) |
e142c38c | 6742 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
6743 | else |
6744 | name = TYPE_NAME (type); | |
6745 | ||
c906108c SS |
6746 | if (name) |
6747 | { | |
4a146b47 | 6748 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
6749 | sizeof (struct symbol)); |
6750 | OBJSTAT (objfile, n_syms++); | |
6751 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
6752 | |
6753 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 6754 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 6755 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
6756 | |
6757 | /* Default assumptions. | |
c5aa993b | 6758 | Use the passed type or decode it from the die. */ |
176620f1 | 6759 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
6760 | SYMBOL_CLASS (sym) = LOC_STATIC; |
6761 | if (type != NULL) | |
6762 | SYMBOL_TYPE (sym) = type; | |
6763 | else | |
e7c27a73 | 6764 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 6765 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
6766 | if (attr) |
6767 | { | |
6768 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
6769 | } | |
c906108c SS |
6770 | switch (die->tag) |
6771 | { | |
6772 | case DW_TAG_label: | |
e142c38c | 6773 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
6774 | if (attr) |
6775 | { | |
6776 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
6777 | } | |
6778 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
6779 | break; | |
6780 | case DW_TAG_subprogram: | |
6781 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
6782 | finish_block. */ | |
6783 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 6784 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
6785 | if (attr2 && (DW_UNSND (attr2) != 0)) |
6786 | { | |
6787 | add_symbol_to_list (sym, &global_symbols); | |
6788 | } | |
6789 | else | |
6790 | { | |
e142c38c | 6791 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6792 | } |
6793 | break; | |
6794 | case DW_TAG_variable: | |
6795 | /* Compilation with minimal debug info may result in variables | |
6796 | with missing type entries. Change the misleading `void' type | |
6797 | to something sensible. */ | |
6798 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
6799 | SYMBOL_TYPE (sym) = init_type (TYPE_CODE_INT, | |
6800 | TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
6801 | "<variable, no debug info>", | |
6802 | objfile); | |
e142c38c | 6803 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
6804 | if (attr) |
6805 | { | |
e7c27a73 | 6806 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 6807 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
6808 | if (attr2 && (DW_UNSND (attr2) != 0)) |
6809 | add_symbol_to_list (sym, &global_symbols); | |
6810 | else | |
e142c38c | 6811 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6812 | break; |
6813 | } | |
e142c38c | 6814 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
6815 | if (attr) |
6816 | { | |
e7c27a73 | 6817 | var_decode_location (attr, sym, cu); |
e142c38c | 6818 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 6819 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 6820 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 6821 | else |
e142c38c | 6822 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6823 | } |
6824 | else | |
6825 | { | |
6826 | /* We do not know the address of this symbol. | |
c5aa993b JM |
6827 | If it is an external symbol and we have type information |
6828 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
6829 | The address of the variable will then be determined from | |
6830 | the minimal symbol table whenever the variable is | |
6831 | referenced. */ | |
e142c38c | 6832 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 6833 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 6834 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
6835 | { |
6836 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
6837 | add_symbol_to_list (sym, &global_symbols); | |
6838 | } | |
6839 | } | |
6840 | break; | |
6841 | case DW_TAG_formal_parameter: | |
e142c38c | 6842 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
6843 | if (attr) |
6844 | { | |
e7c27a73 | 6845 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
6846 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
6847 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
6848 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 6849 | } |
e142c38c | 6850 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
6851 | if (attr) |
6852 | { | |
e7c27a73 | 6853 | dwarf2_const_value (attr, sym, cu); |
c906108c | 6854 | } |
e142c38c | 6855 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6856 | break; |
6857 | case DW_TAG_unspecified_parameters: | |
6858 | /* From varargs functions; gdb doesn't seem to have any | |
6859 | interest in this information, so just ignore it for now. | |
6860 | (FIXME?) */ | |
6861 | break; | |
6862 | case DW_TAG_class_type: | |
6863 | case DW_TAG_structure_type: | |
6864 | case DW_TAG_union_type: | |
6865 | case DW_TAG_enumeration_type: | |
6866 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 6867 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 6868 | |
63d06c5c DC |
6869 | /* Make sure that the symbol includes appropriate enclosing |
6870 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 6871 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
6872 | the type. */ |
6873 | ||
987504bb JJ |
6874 | if (cu->language == language_cplus |
6875 | || cu->language == language_java) | |
c906108c | 6876 | { |
63d06c5c DC |
6877 | struct type *type = SYMBOL_TYPE (sym); |
6878 | ||
6879 | if (TYPE_TAG_NAME (type) != NULL) | |
6880 | { | |
6881 | /* FIXME: carlton/2003-11-10: Should this use | |
6882 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
6883 | arises further down in this function.) */ |
6884 | /* The type's name is already allocated along with | |
6885 | this objfile, so we don't need to duplicate it | |
6886 | for the symbol. */ | |
6887 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 6888 | } |
c906108c | 6889 | } |
63d06c5c DC |
6890 | |
6891 | { | |
987504bb | 6892 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
6893 | really ever be static objects: otherwise, if you try |
6894 | to, say, break of a class's method and you're in a file | |
6895 | which doesn't mention that class, it won't work unless | |
6896 | the check for all static symbols in lookup_symbol_aux | |
6897 | saves you. See the OtherFileClass tests in | |
6898 | gdb.c++/namespace.exp. */ | |
6899 | ||
6900 | struct pending **list_to_add; | |
6901 | ||
e142c38c | 6902 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
6903 | && (cu->language == language_cplus |
6904 | || cu->language == language_java) | |
e142c38c | 6905 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
6906 | |
6907 | add_symbol_to_list (sym, list_to_add); | |
6908 | ||
6909 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb JJ |
6910 | defines a typedef for "foo". A Java class declaration also |
6911 | defines a typedef for the class. Synthesize a typedef symbol | |
6912 | so that "ptype foo" works as expected. */ | |
6913 | if (cu->language == language_cplus | |
6914 | || cu->language == language_java) | |
63d06c5c DC |
6915 | { |
6916 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 6917 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
6918 | sizeof (struct symbol)); |
6919 | *typedef_sym = *sym; | |
6920 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
d8151005 DJ |
6921 | /* The symbol's name is already allocated along with |
6922 | this objfile, so we don't need to duplicate it for | |
6923 | the type. */ | |
63d06c5c | 6924 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
d8151005 | 6925 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NATURAL_NAME (sym); |
63d06c5c DC |
6926 | add_symbol_to_list (typedef_sym, list_to_add); |
6927 | } | |
6928 | } | |
c906108c SS |
6929 | break; |
6930 | case DW_TAG_typedef: | |
63d06c5c DC |
6931 | if (processing_has_namespace_info |
6932 | && processing_current_prefix[0] != '\0') | |
6933 | { | |
987504bb JJ |
6934 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
6935 | processing_current_prefix, | |
6936 | name, cu); | |
63d06c5c DC |
6937 | } |
6938 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
6939 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 6940 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 6941 | break; |
c906108c | 6942 | case DW_TAG_base_type: |
a02abb62 | 6943 | case DW_TAG_subrange_type: |
c906108c | 6944 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 6945 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 6946 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
6947 | break; |
6948 | case DW_TAG_enumerator: | |
63d06c5c DC |
6949 | if (processing_has_namespace_info |
6950 | && processing_current_prefix[0] != '\0') | |
6951 | { | |
987504bb JJ |
6952 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
6953 | processing_current_prefix, | |
6954 | name, cu); | |
63d06c5c | 6955 | } |
e142c38c | 6956 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
6957 | if (attr) |
6958 | { | |
e7c27a73 | 6959 | dwarf2_const_value (attr, sym, cu); |
c906108c | 6960 | } |
63d06c5c DC |
6961 | { |
6962 | /* NOTE: carlton/2003-11-10: See comment above in the | |
6963 | DW_TAG_class_type, etc. block. */ | |
6964 | ||
6965 | struct pending **list_to_add; | |
6966 | ||
e142c38c | 6967 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
6968 | && (cu->language == language_cplus |
6969 | || cu->language == language_java) | |
e142c38c | 6970 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
6971 | |
6972 | add_symbol_to_list (sym, list_to_add); | |
6973 | } | |
c906108c | 6974 | break; |
5c4e30ca DC |
6975 | case DW_TAG_namespace: |
6976 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
6977 | add_symbol_to_list (sym, &global_symbols); | |
6978 | break; | |
c906108c SS |
6979 | default: |
6980 | /* Not a tag we recognize. Hopefully we aren't processing | |
6981 | trash data, but since we must specifically ignore things | |
6982 | we don't recognize, there is nothing else we should do at | |
6983 | this point. */ | |
4d3c2250 KB |
6984 | complaint (&symfile_complaints, "unsupported tag: '%s'", |
6985 | dwarf_tag_name (die->tag)); | |
c906108c SS |
6986 | break; |
6987 | } | |
6988 | } | |
6989 | return (sym); | |
6990 | } | |
6991 | ||
6992 | /* Copy constant value from an attribute to a symbol. */ | |
6993 | ||
6994 | static void | |
107d2387 | 6995 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 6996 | struct dwarf2_cu *cu) |
c906108c | 6997 | { |
e7c27a73 DJ |
6998 | struct objfile *objfile = cu->objfile; |
6999 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7000 | struct dwarf_block *blk; |
7001 | ||
7002 | switch (attr->form) | |
7003 | { | |
7004 | case DW_FORM_addr: | |
107d2387 | 7005 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 7006 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7007 | cu_header->addr_size, |
7008 | TYPE_LENGTH (SYMBOL_TYPE | |
7009 | (sym))); | |
c906108c | 7010 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 7011 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
7012 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
7013 | it's body - store_unsigned_integer. */ | |
7014 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
7015 | DW_ADDR (attr)); | |
c906108c SS |
7016 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
7017 | break; | |
7018 | case DW_FORM_block1: | |
7019 | case DW_FORM_block2: | |
7020 | case DW_FORM_block4: | |
7021 | case DW_FORM_block: | |
7022 | blk = DW_BLOCK (attr); | |
7023 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 7024 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7025 | blk->size, |
7026 | TYPE_LENGTH (SYMBOL_TYPE | |
7027 | (sym))); | |
c906108c | 7028 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 7029 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
7030 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
7031 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7032 | break; | |
2df3850c JM |
7033 | |
7034 | /* The DW_AT_const_value attributes are supposed to carry the | |
7035 | symbol's value "represented as it would be on the target | |
7036 | architecture." By the time we get here, it's already been | |
7037 | converted to host endianness, so we just need to sign- or | |
7038 | zero-extend it as appropriate. */ | |
7039 | case DW_FORM_data1: | |
7040 | dwarf2_const_value_data (attr, sym, 8); | |
7041 | break; | |
c906108c | 7042 | case DW_FORM_data2: |
2df3850c JM |
7043 | dwarf2_const_value_data (attr, sym, 16); |
7044 | break; | |
c906108c | 7045 | case DW_FORM_data4: |
2df3850c JM |
7046 | dwarf2_const_value_data (attr, sym, 32); |
7047 | break; | |
c906108c | 7048 | case DW_FORM_data8: |
2df3850c JM |
7049 | dwarf2_const_value_data (attr, sym, 64); |
7050 | break; | |
7051 | ||
c906108c | 7052 | case DW_FORM_sdata: |
2df3850c JM |
7053 | SYMBOL_VALUE (sym) = DW_SND (attr); |
7054 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7055 | break; | |
7056 | ||
c906108c SS |
7057 | case DW_FORM_udata: |
7058 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
7059 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7060 | break; | |
2df3850c | 7061 | |
c906108c | 7062 | default: |
4d3c2250 KB |
7063 | complaint (&symfile_complaints, |
7064 | "unsupported const value attribute form: '%s'", | |
7065 | dwarf_form_name (attr->form)); | |
c906108c SS |
7066 | SYMBOL_VALUE (sym) = 0; |
7067 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7068 | break; | |
7069 | } | |
7070 | } | |
7071 | ||
2df3850c JM |
7072 | |
7073 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
7074 | or zero-extend it as appropriate for the symbol's type. */ | |
7075 | static void | |
7076 | dwarf2_const_value_data (struct attribute *attr, | |
7077 | struct symbol *sym, | |
7078 | int bits) | |
7079 | { | |
7080 | LONGEST l = DW_UNSND (attr); | |
7081 | ||
7082 | if (bits < sizeof (l) * 8) | |
7083 | { | |
7084 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
7085 | l &= ((LONGEST) 1 << bits) - 1; | |
7086 | else | |
bf9198f1 | 7087 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
7088 | } |
7089 | ||
7090 | SYMBOL_VALUE (sym) = l; | |
7091 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7092 | } | |
7093 | ||
7094 | ||
c906108c SS |
7095 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
7096 | ||
7097 | static struct type * | |
e7c27a73 | 7098 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7099 | { |
7100 | struct type *type; | |
7101 | struct attribute *type_attr; | |
7102 | struct die_info *type_die; | |
c906108c | 7103 | |
e142c38c | 7104 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
7105 | if (!type_attr) |
7106 | { | |
7107 | /* A missing DW_AT_type represents a void type. */ | |
e142c38c | 7108 | return dwarf2_fundamental_type (cu->objfile, FT_VOID, cu); |
c906108c SS |
7109 | } |
7110 | else | |
10b3939b DJ |
7111 | type_die = follow_die_ref (die, type_attr, cu); |
7112 | ||
e7c27a73 | 7113 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7114 | if (!type) |
7115 | { | |
7116 | dump_die (type_die); | |
659b0389 | 7117 | error ("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]", |
e7c27a73 | 7118 | cu->objfile->name); |
c906108c SS |
7119 | } |
7120 | return type; | |
7121 | } | |
7122 | ||
7123 | /* Return the containing type of the die in question using its | |
7124 | DW_AT_containing_type attribute. */ | |
7125 | ||
7126 | static struct type * | |
e7c27a73 | 7127 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7128 | { |
7129 | struct type *type = NULL; | |
7130 | struct attribute *type_attr; | |
7131 | struct die_info *type_die = NULL; | |
c906108c | 7132 | |
e142c38c | 7133 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
7134 | if (type_attr) |
7135 | { | |
10b3939b | 7136 | type_die = follow_die_ref (die, type_attr, cu); |
e7c27a73 | 7137 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7138 | } |
7139 | if (!type) | |
7140 | { | |
7141 | if (type_die) | |
7142 | dump_die (type_die); | |
659b0389 | 7143 | error ("Dwarf Error: Problem turning containing type into gdb type [in module %s]", |
e7c27a73 | 7144 | cu->objfile->name); |
c906108c SS |
7145 | } |
7146 | return type; | |
7147 | } | |
7148 | ||
c906108c | 7149 | static struct type * |
e7c27a73 | 7150 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7151 | { |
7152 | if (die->type) | |
7153 | { | |
7154 | return die->type; | |
7155 | } | |
7156 | else | |
7157 | { | |
e7c27a73 | 7158 | read_type_die (die, cu); |
c906108c SS |
7159 | if (!die->type) |
7160 | { | |
7161 | dump_die (die); | |
659b0389 | 7162 | error ("Dwarf Error: Cannot find type of die [in module %s]", |
e7c27a73 | 7163 | cu->objfile->name); |
c906108c SS |
7164 | } |
7165 | return die->type; | |
7166 | } | |
7167 | } | |
7168 | ||
7169 | static void | |
e7c27a73 | 7170 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7171 | { |
e142c38c | 7172 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
7173 | const char *old_prefix = processing_current_prefix; |
7174 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
7175 | processing_current_prefix = prefix; | |
7176 | ||
c906108c SS |
7177 | switch (die->tag) |
7178 | { | |
7179 | case DW_TAG_class_type: | |
7180 | case DW_TAG_structure_type: | |
7181 | case DW_TAG_union_type: | |
134d01f1 | 7182 | read_structure_type (die, cu); |
c906108c SS |
7183 | break; |
7184 | case DW_TAG_enumeration_type: | |
134d01f1 | 7185 | read_enumeration_type (die, cu); |
c906108c SS |
7186 | break; |
7187 | case DW_TAG_subprogram: | |
7188 | case DW_TAG_subroutine_type: | |
e7c27a73 | 7189 | read_subroutine_type (die, cu); |
c906108c SS |
7190 | break; |
7191 | case DW_TAG_array_type: | |
e7c27a73 | 7192 | read_array_type (die, cu); |
c906108c SS |
7193 | break; |
7194 | case DW_TAG_pointer_type: | |
e7c27a73 | 7195 | read_tag_pointer_type (die, cu); |
c906108c SS |
7196 | break; |
7197 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 7198 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
7199 | break; |
7200 | case DW_TAG_reference_type: | |
e7c27a73 | 7201 | read_tag_reference_type (die, cu); |
c906108c SS |
7202 | break; |
7203 | case DW_TAG_const_type: | |
e7c27a73 | 7204 | read_tag_const_type (die, cu); |
c906108c SS |
7205 | break; |
7206 | case DW_TAG_volatile_type: | |
e7c27a73 | 7207 | read_tag_volatile_type (die, cu); |
c906108c SS |
7208 | break; |
7209 | case DW_TAG_string_type: | |
e7c27a73 | 7210 | read_tag_string_type (die, cu); |
c906108c SS |
7211 | break; |
7212 | case DW_TAG_typedef: | |
e7c27a73 | 7213 | read_typedef (die, cu); |
c906108c | 7214 | break; |
a02abb62 JB |
7215 | case DW_TAG_subrange_type: |
7216 | read_subrange_type (die, cu); | |
7217 | break; | |
c906108c | 7218 | case DW_TAG_base_type: |
e7c27a73 | 7219 | read_base_type (die, cu); |
c906108c SS |
7220 | break; |
7221 | default: | |
4d3c2250 KB |
7222 | complaint (&symfile_complaints, "unexepected tag in read_type_die: '%s'", |
7223 | dwarf_tag_name (die->tag)); | |
c906108c SS |
7224 | break; |
7225 | } | |
63d06c5c DC |
7226 | |
7227 | processing_current_prefix = old_prefix; | |
7228 | do_cleanups (back_to); | |
7229 | } | |
7230 | ||
fdde2d81 DC |
7231 | /* Return the name of the namespace/class that DIE is defined within, |
7232 | or "" if we can't tell. The caller should xfree the result. */ | |
7233 | ||
7234 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
7235 | therein) for an example of how to use this function to deal with | |
7236 | DW_AT_specification. */ | |
7237 | ||
7238 | static char * | |
e142c38c | 7239 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
7240 | { |
7241 | struct die_info *parent; | |
7242 | ||
987504bb JJ |
7243 | if (cu->language != language_cplus |
7244 | && cu->language != language_java) | |
63d06c5c DC |
7245 | return NULL; |
7246 | ||
7247 | parent = die->parent; | |
7248 | ||
7249 | if (parent == NULL) | |
7250 | { | |
8176b9b8 | 7251 | return xstrdup (""); |
63d06c5c DC |
7252 | } |
7253 | else | |
7254 | { | |
63d06c5c DC |
7255 | switch (parent->tag) { |
7256 | case DW_TAG_namespace: | |
7257 | { | |
8176b9b8 DC |
7258 | /* FIXME: carlton/2004-03-05: Should I follow extension dies |
7259 | before doing this check? */ | |
7260 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) | |
7261 | { | |
7262 | return xstrdup (TYPE_TAG_NAME (parent->type)); | |
7263 | } | |
7264 | else | |
7265 | { | |
7266 | int dummy; | |
7267 | char *parent_prefix = determine_prefix (parent, cu); | |
987504bb | 7268 | char *retval = typename_concat (NULL, parent_prefix, |
8176b9b8 | 7269 | namespace_name (parent, &dummy, |
987504bb JJ |
7270 | cu), |
7271 | cu); | |
8176b9b8 DC |
7272 | xfree (parent_prefix); |
7273 | return retval; | |
7274 | } | |
63d06c5c DC |
7275 | } |
7276 | break; | |
7277 | case DW_TAG_class_type: | |
7278 | case DW_TAG_structure_type: | |
7279 | { | |
8176b9b8 | 7280 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) |
63d06c5c | 7281 | { |
8176b9b8 | 7282 | return xstrdup (TYPE_TAG_NAME (parent->type)); |
63d06c5c DC |
7283 | } |
7284 | else | |
8176b9b8 DC |
7285 | { |
7286 | const char *old_prefix = processing_current_prefix; | |
7287 | char *new_prefix = determine_prefix (parent, cu); | |
7288 | char *retval; | |
7289 | ||
7290 | processing_current_prefix = new_prefix; | |
7291 | retval = determine_class_name (parent, cu); | |
7292 | processing_current_prefix = old_prefix; | |
7293 | ||
7294 | xfree (new_prefix); | |
7295 | return retval; | |
7296 | } | |
63d06c5c | 7297 | } |
63d06c5c | 7298 | default: |
8176b9b8 | 7299 | return determine_prefix (parent, cu); |
63d06c5c | 7300 | } |
63d06c5c DC |
7301 | } |
7302 | } | |
7303 | ||
987504bb JJ |
7304 | /* Return a newly-allocated string formed by concatenating PREFIX and |
7305 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
7306 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
7307 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
7308 | is used to determine the language and hence, the appropriate separator. */ | |
7309 | ||
7310 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
7311 | |
7312 | static char * | |
987504bb JJ |
7313 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
7314 | struct dwarf2_cu *cu) | |
63d06c5c | 7315 | { |
987504bb | 7316 | char *sep; |
63d06c5c | 7317 | |
987504bb JJ |
7318 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
7319 | sep = ""; | |
7320 | else if (cu->language == language_java) | |
7321 | sep = "."; | |
7322 | else | |
7323 | sep = "::"; | |
63d06c5c | 7324 | |
987504bb JJ |
7325 | if (obs == NULL) |
7326 | { | |
7327 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
7328 | retval[0] = '\0'; | |
7329 | ||
7330 | if (prefix) | |
7331 | { | |
7332 | strcpy (retval, prefix); | |
7333 | strcat (retval, sep); | |
7334 | } | |
7335 | if (suffix) | |
7336 | strcat (retval, suffix); | |
7337 | ||
63d06c5c DC |
7338 | return retval; |
7339 | } | |
987504bb JJ |
7340 | else |
7341 | { | |
7342 | /* We have an obstack. */ | |
7343 | return obconcat (obs, prefix, sep, suffix); | |
7344 | } | |
63d06c5c DC |
7345 | } |
7346 | ||
c906108c | 7347 | static struct type * |
e7c27a73 | 7348 | dwarf_base_type (int encoding, int size, struct dwarf2_cu *cu) |
c906108c | 7349 | { |
e7c27a73 DJ |
7350 | struct objfile *objfile = cu->objfile; |
7351 | ||
c906108c SS |
7352 | /* FIXME - this should not produce a new (struct type *) |
7353 | every time. It should cache base types. */ | |
7354 | struct type *type; | |
7355 | switch (encoding) | |
7356 | { | |
7357 | case DW_ATE_address: | |
e142c38c | 7358 | type = dwarf2_fundamental_type (objfile, FT_VOID, cu); |
c906108c SS |
7359 | return type; |
7360 | case DW_ATE_boolean: | |
e142c38c | 7361 | type = dwarf2_fundamental_type (objfile, FT_BOOLEAN, cu); |
c906108c SS |
7362 | return type; |
7363 | case DW_ATE_complex_float: | |
7364 | if (size == 16) | |
7365 | { | |
e142c38c | 7366 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_COMPLEX, cu); |
c906108c SS |
7367 | } |
7368 | else | |
7369 | { | |
e142c38c | 7370 | type = dwarf2_fundamental_type (objfile, FT_COMPLEX, cu); |
c906108c SS |
7371 | } |
7372 | return type; | |
7373 | case DW_ATE_float: | |
7374 | if (size == 8) | |
7375 | { | |
e142c38c | 7376 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
c906108c SS |
7377 | } |
7378 | else | |
7379 | { | |
e142c38c | 7380 | type = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
c906108c SS |
7381 | } |
7382 | return type; | |
7383 | case DW_ATE_signed: | |
7384 | switch (size) | |
7385 | { | |
7386 | case 1: | |
e142c38c | 7387 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
7388 | break; |
7389 | case 2: | |
e142c38c | 7390 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_SHORT, cu); |
c906108c SS |
7391 | break; |
7392 | default: | |
7393 | case 4: | |
e142c38c | 7394 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
7395 | break; |
7396 | } | |
7397 | return type; | |
7398 | case DW_ATE_signed_char: | |
e142c38c | 7399 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
7400 | return type; |
7401 | case DW_ATE_unsigned: | |
7402 | switch (size) | |
7403 | { | |
7404 | case 1: | |
e142c38c | 7405 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
7406 | break; |
7407 | case 2: | |
e142c38c | 7408 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_SHORT, cu); |
c906108c SS |
7409 | break; |
7410 | default: | |
7411 | case 4: | |
e142c38c | 7412 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_INTEGER, cu); |
c906108c SS |
7413 | break; |
7414 | } | |
7415 | return type; | |
7416 | case DW_ATE_unsigned_char: | |
e142c38c | 7417 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
7418 | return type; |
7419 | default: | |
e142c38c | 7420 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
7421 | return type; |
7422 | } | |
7423 | } | |
7424 | ||
7425 | #if 0 | |
7426 | struct die_info * | |
fba45db2 | 7427 | copy_die (struct die_info *old_die) |
c906108c SS |
7428 | { |
7429 | struct die_info *new_die; | |
7430 | int i, num_attrs; | |
7431 | ||
7432 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
7433 | memset (new_die, 0, sizeof (struct die_info)); | |
7434 | ||
7435 | new_die->tag = old_die->tag; | |
7436 | new_die->has_children = old_die->has_children; | |
7437 | new_die->abbrev = old_die->abbrev; | |
7438 | new_die->offset = old_die->offset; | |
7439 | new_die->type = NULL; | |
7440 | ||
7441 | num_attrs = old_die->num_attrs; | |
7442 | new_die->num_attrs = num_attrs; | |
7443 | new_die->attrs = (struct attribute *) | |
7444 | xmalloc (num_attrs * sizeof (struct attribute)); | |
7445 | ||
7446 | for (i = 0; i < old_die->num_attrs; ++i) | |
7447 | { | |
7448 | new_die->attrs[i].name = old_die->attrs[i].name; | |
7449 | new_die->attrs[i].form = old_die->attrs[i].form; | |
7450 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
7451 | } | |
7452 | ||
7453 | new_die->next = NULL; | |
7454 | return new_die; | |
7455 | } | |
7456 | #endif | |
7457 | ||
7458 | /* Return sibling of die, NULL if no sibling. */ | |
7459 | ||
f9aca02d | 7460 | static struct die_info * |
fba45db2 | 7461 | sibling_die (struct die_info *die) |
c906108c | 7462 | { |
639d11d3 | 7463 | return die->sibling; |
c906108c SS |
7464 | } |
7465 | ||
7466 | /* Get linkage name of a die, return NULL if not found. */ | |
7467 | ||
7468 | static char * | |
e142c38c | 7469 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7470 | { |
7471 | struct attribute *attr; | |
7472 | ||
e142c38c | 7473 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
7474 | if (attr && DW_STRING (attr)) |
7475 | return DW_STRING (attr); | |
e142c38c | 7476 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
7477 | if (attr && DW_STRING (attr)) |
7478 | return DW_STRING (attr); | |
7479 | return NULL; | |
7480 | } | |
7481 | ||
9219021c DC |
7482 | /* Get name of a die, return NULL if not found. */ |
7483 | ||
7484 | static char * | |
e142c38c | 7485 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7486 | { |
7487 | struct attribute *attr; | |
7488 | ||
e142c38c | 7489 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
7490 | if (attr && DW_STRING (attr)) |
7491 | return DW_STRING (attr); | |
7492 | return NULL; | |
7493 | } | |
7494 | ||
7495 | /* Return the die that this die in an extension of, or NULL if there | |
7496 | is none. */ | |
7497 | ||
7498 | static struct die_info * | |
e142c38c | 7499 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7500 | { |
7501 | struct attribute *attr; | |
9219021c | 7502 | |
e142c38c | 7503 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
7504 | if (attr == NULL) |
7505 | return NULL; | |
7506 | ||
10b3939b | 7507 | return follow_die_ref (die, attr, cu); |
9219021c DC |
7508 | } |
7509 | ||
c906108c SS |
7510 | /* Convert a DIE tag into its string name. */ |
7511 | ||
7512 | static char * | |
aa1ee363 | 7513 | dwarf_tag_name (unsigned tag) |
c906108c SS |
7514 | { |
7515 | switch (tag) | |
7516 | { | |
7517 | case DW_TAG_padding: | |
7518 | return "DW_TAG_padding"; | |
7519 | case DW_TAG_array_type: | |
7520 | return "DW_TAG_array_type"; | |
7521 | case DW_TAG_class_type: | |
7522 | return "DW_TAG_class_type"; | |
7523 | case DW_TAG_entry_point: | |
7524 | return "DW_TAG_entry_point"; | |
7525 | case DW_TAG_enumeration_type: | |
7526 | return "DW_TAG_enumeration_type"; | |
7527 | case DW_TAG_formal_parameter: | |
7528 | return "DW_TAG_formal_parameter"; | |
7529 | case DW_TAG_imported_declaration: | |
7530 | return "DW_TAG_imported_declaration"; | |
7531 | case DW_TAG_label: | |
7532 | return "DW_TAG_label"; | |
7533 | case DW_TAG_lexical_block: | |
7534 | return "DW_TAG_lexical_block"; | |
7535 | case DW_TAG_member: | |
7536 | return "DW_TAG_member"; | |
7537 | case DW_TAG_pointer_type: | |
7538 | return "DW_TAG_pointer_type"; | |
7539 | case DW_TAG_reference_type: | |
7540 | return "DW_TAG_reference_type"; | |
7541 | case DW_TAG_compile_unit: | |
7542 | return "DW_TAG_compile_unit"; | |
7543 | case DW_TAG_string_type: | |
7544 | return "DW_TAG_string_type"; | |
7545 | case DW_TAG_structure_type: | |
7546 | return "DW_TAG_structure_type"; | |
7547 | case DW_TAG_subroutine_type: | |
7548 | return "DW_TAG_subroutine_type"; | |
7549 | case DW_TAG_typedef: | |
7550 | return "DW_TAG_typedef"; | |
7551 | case DW_TAG_union_type: | |
7552 | return "DW_TAG_union_type"; | |
7553 | case DW_TAG_unspecified_parameters: | |
7554 | return "DW_TAG_unspecified_parameters"; | |
7555 | case DW_TAG_variant: | |
7556 | return "DW_TAG_variant"; | |
7557 | case DW_TAG_common_block: | |
7558 | return "DW_TAG_common_block"; | |
7559 | case DW_TAG_common_inclusion: | |
7560 | return "DW_TAG_common_inclusion"; | |
7561 | case DW_TAG_inheritance: | |
7562 | return "DW_TAG_inheritance"; | |
7563 | case DW_TAG_inlined_subroutine: | |
7564 | return "DW_TAG_inlined_subroutine"; | |
7565 | case DW_TAG_module: | |
7566 | return "DW_TAG_module"; | |
7567 | case DW_TAG_ptr_to_member_type: | |
7568 | return "DW_TAG_ptr_to_member_type"; | |
7569 | case DW_TAG_set_type: | |
7570 | return "DW_TAG_set_type"; | |
7571 | case DW_TAG_subrange_type: | |
7572 | return "DW_TAG_subrange_type"; | |
7573 | case DW_TAG_with_stmt: | |
7574 | return "DW_TAG_with_stmt"; | |
7575 | case DW_TAG_access_declaration: | |
7576 | return "DW_TAG_access_declaration"; | |
7577 | case DW_TAG_base_type: | |
7578 | return "DW_TAG_base_type"; | |
7579 | case DW_TAG_catch_block: | |
7580 | return "DW_TAG_catch_block"; | |
7581 | case DW_TAG_const_type: | |
7582 | return "DW_TAG_const_type"; | |
7583 | case DW_TAG_constant: | |
7584 | return "DW_TAG_constant"; | |
7585 | case DW_TAG_enumerator: | |
7586 | return "DW_TAG_enumerator"; | |
7587 | case DW_TAG_file_type: | |
7588 | return "DW_TAG_file_type"; | |
7589 | case DW_TAG_friend: | |
7590 | return "DW_TAG_friend"; | |
7591 | case DW_TAG_namelist: | |
7592 | return "DW_TAG_namelist"; | |
7593 | case DW_TAG_namelist_item: | |
7594 | return "DW_TAG_namelist_item"; | |
7595 | case DW_TAG_packed_type: | |
7596 | return "DW_TAG_packed_type"; | |
7597 | case DW_TAG_subprogram: | |
7598 | return "DW_TAG_subprogram"; | |
7599 | case DW_TAG_template_type_param: | |
7600 | return "DW_TAG_template_type_param"; | |
7601 | case DW_TAG_template_value_param: | |
7602 | return "DW_TAG_template_value_param"; | |
7603 | case DW_TAG_thrown_type: | |
7604 | return "DW_TAG_thrown_type"; | |
7605 | case DW_TAG_try_block: | |
7606 | return "DW_TAG_try_block"; | |
7607 | case DW_TAG_variant_part: | |
7608 | return "DW_TAG_variant_part"; | |
7609 | case DW_TAG_variable: | |
7610 | return "DW_TAG_variable"; | |
7611 | case DW_TAG_volatile_type: | |
7612 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
7613 | case DW_TAG_dwarf_procedure: |
7614 | return "DW_TAG_dwarf_procedure"; | |
7615 | case DW_TAG_restrict_type: | |
7616 | return "DW_TAG_restrict_type"; | |
7617 | case DW_TAG_interface_type: | |
7618 | return "DW_TAG_interface_type"; | |
7619 | case DW_TAG_namespace: | |
7620 | return "DW_TAG_namespace"; | |
7621 | case DW_TAG_imported_module: | |
7622 | return "DW_TAG_imported_module"; | |
7623 | case DW_TAG_unspecified_type: | |
7624 | return "DW_TAG_unspecified_type"; | |
7625 | case DW_TAG_partial_unit: | |
7626 | return "DW_TAG_partial_unit"; | |
7627 | case DW_TAG_imported_unit: | |
7628 | return "DW_TAG_imported_unit"; | |
c906108c SS |
7629 | case DW_TAG_MIPS_loop: |
7630 | return "DW_TAG_MIPS_loop"; | |
7631 | case DW_TAG_format_label: | |
7632 | return "DW_TAG_format_label"; | |
7633 | case DW_TAG_function_template: | |
7634 | return "DW_TAG_function_template"; | |
7635 | case DW_TAG_class_template: | |
7636 | return "DW_TAG_class_template"; | |
7637 | default: | |
7638 | return "DW_TAG_<unknown>"; | |
7639 | } | |
7640 | } | |
7641 | ||
7642 | /* Convert a DWARF attribute code into its string name. */ | |
7643 | ||
7644 | static char * | |
aa1ee363 | 7645 | dwarf_attr_name (unsigned attr) |
c906108c SS |
7646 | { |
7647 | switch (attr) | |
7648 | { | |
7649 | case DW_AT_sibling: | |
7650 | return "DW_AT_sibling"; | |
7651 | case DW_AT_location: | |
7652 | return "DW_AT_location"; | |
7653 | case DW_AT_name: | |
7654 | return "DW_AT_name"; | |
7655 | case DW_AT_ordering: | |
7656 | return "DW_AT_ordering"; | |
7657 | case DW_AT_subscr_data: | |
7658 | return "DW_AT_subscr_data"; | |
7659 | case DW_AT_byte_size: | |
7660 | return "DW_AT_byte_size"; | |
7661 | case DW_AT_bit_offset: | |
7662 | return "DW_AT_bit_offset"; | |
7663 | case DW_AT_bit_size: | |
7664 | return "DW_AT_bit_size"; | |
7665 | case DW_AT_element_list: | |
7666 | return "DW_AT_element_list"; | |
7667 | case DW_AT_stmt_list: | |
7668 | return "DW_AT_stmt_list"; | |
7669 | case DW_AT_low_pc: | |
7670 | return "DW_AT_low_pc"; | |
7671 | case DW_AT_high_pc: | |
7672 | return "DW_AT_high_pc"; | |
7673 | case DW_AT_language: | |
7674 | return "DW_AT_language"; | |
7675 | case DW_AT_member: | |
7676 | return "DW_AT_member"; | |
7677 | case DW_AT_discr: | |
7678 | return "DW_AT_discr"; | |
7679 | case DW_AT_discr_value: | |
7680 | return "DW_AT_discr_value"; | |
7681 | case DW_AT_visibility: | |
7682 | return "DW_AT_visibility"; | |
7683 | case DW_AT_import: | |
7684 | return "DW_AT_import"; | |
7685 | case DW_AT_string_length: | |
7686 | return "DW_AT_string_length"; | |
7687 | case DW_AT_common_reference: | |
7688 | return "DW_AT_common_reference"; | |
7689 | case DW_AT_comp_dir: | |
7690 | return "DW_AT_comp_dir"; | |
7691 | case DW_AT_const_value: | |
7692 | return "DW_AT_const_value"; | |
7693 | case DW_AT_containing_type: | |
7694 | return "DW_AT_containing_type"; | |
7695 | case DW_AT_default_value: | |
7696 | return "DW_AT_default_value"; | |
7697 | case DW_AT_inline: | |
7698 | return "DW_AT_inline"; | |
7699 | case DW_AT_is_optional: | |
7700 | return "DW_AT_is_optional"; | |
7701 | case DW_AT_lower_bound: | |
7702 | return "DW_AT_lower_bound"; | |
7703 | case DW_AT_producer: | |
7704 | return "DW_AT_producer"; | |
7705 | case DW_AT_prototyped: | |
7706 | return "DW_AT_prototyped"; | |
7707 | case DW_AT_return_addr: | |
7708 | return "DW_AT_return_addr"; | |
7709 | case DW_AT_start_scope: | |
7710 | return "DW_AT_start_scope"; | |
7711 | case DW_AT_stride_size: | |
7712 | return "DW_AT_stride_size"; | |
7713 | case DW_AT_upper_bound: | |
7714 | return "DW_AT_upper_bound"; | |
7715 | case DW_AT_abstract_origin: | |
7716 | return "DW_AT_abstract_origin"; | |
7717 | case DW_AT_accessibility: | |
7718 | return "DW_AT_accessibility"; | |
7719 | case DW_AT_address_class: | |
7720 | return "DW_AT_address_class"; | |
7721 | case DW_AT_artificial: | |
7722 | return "DW_AT_artificial"; | |
7723 | case DW_AT_base_types: | |
7724 | return "DW_AT_base_types"; | |
7725 | case DW_AT_calling_convention: | |
7726 | return "DW_AT_calling_convention"; | |
7727 | case DW_AT_count: | |
7728 | return "DW_AT_count"; | |
7729 | case DW_AT_data_member_location: | |
7730 | return "DW_AT_data_member_location"; | |
7731 | case DW_AT_decl_column: | |
7732 | return "DW_AT_decl_column"; | |
7733 | case DW_AT_decl_file: | |
7734 | return "DW_AT_decl_file"; | |
7735 | case DW_AT_decl_line: | |
7736 | return "DW_AT_decl_line"; | |
7737 | case DW_AT_declaration: | |
7738 | return "DW_AT_declaration"; | |
7739 | case DW_AT_discr_list: | |
7740 | return "DW_AT_discr_list"; | |
7741 | case DW_AT_encoding: | |
7742 | return "DW_AT_encoding"; | |
7743 | case DW_AT_external: | |
7744 | return "DW_AT_external"; | |
7745 | case DW_AT_frame_base: | |
7746 | return "DW_AT_frame_base"; | |
7747 | case DW_AT_friend: | |
7748 | return "DW_AT_friend"; | |
7749 | case DW_AT_identifier_case: | |
7750 | return "DW_AT_identifier_case"; | |
7751 | case DW_AT_macro_info: | |
7752 | return "DW_AT_macro_info"; | |
7753 | case DW_AT_namelist_items: | |
7754 | return "DW_AT_namelist_items"; | |
7755 | case DW_AT_priority: | |
7756 | return "DW_AT_priority"; | |
7757 | case DW_AT_segment: | |
7758 | return "DW_AT_segment"; | |
7759 | case DW_AT_specification: | |
7760 | return "DW_AT_specification"; | |
7761 | case DW_AT_static_link: | |
7762 | return "DW_AT_static_link"; | |
7763 | case DW_AT_type: | |
7764 | return "DW_AT_type"; | |
7765 | case DW_AT_use_location: | |
7766 | return "DW_AT_use_location"; | |
7767 | case DW_AT_variable_parameter: | |
7768 | return "DW_AT_variable_parameter"; | |
7769 | case DW_AT_virtuality: | |
7770 | return "DW_AT_virtuality"; | |
7771 | case DW_AT_vtable_elem_location: | |
7772 | return "DW_AT_vtable_elem_location"; | |
d9fa45fe DC |
7773 | case DW_AT_allocated: |
7774 | return "DW_AT_allocated"; | |
7775 | case DW_AT_associated: | |
7776 | return "DW_AT_associated"; | |
7777 | case DW_AT_data_location: | |
7778 | return "DW_AT_data_location"; | |
7779 | case DW_AT_stride: | |
7780 | return "DW_AT_stride"; | |
7781 | case DW_AT_entry_pc: | |
7782 | return "DW_AT_entry_pc"; | |
7783 | case DW_AT_use_UTF8: | |
7784 | return "DW_AT_use_UTF8"; | |
7785 | case DW_AT_extension: | |
7786 | return "DW_AT_extension"; | |
7787 | case DW_AT_ranges: | |
7788 | return "DW_AT_ranges"; | |
7789 | case DW_AT_trampoline: | |
7790 | return "DW_AT_trampoline"; | |
7791 | case DW_AT_call_column: | |
7792 | return "DW_AT_call_column"; | |
7793 | case DW_AT_call_file: | |
7794 | return "DW_AT_call_file"; | |
7795 | case DW_AT_call_line: | |
7796 | return "DW_AT_call_line"; | |
c906108c SS |
7797 | #ifdef MIPS |
7798 | case DW_AT_MIPS_fde: | |
7799 | return "DW_AT_MIPS_fde"; | |
7800 | case DW_AT_MIPS_loop_begin: | |
7801 | return "DW_AT_MIPS_loop_begin"; | |
7802 | case DW_AT_MIPS_tail_loop_begin: | |
7803 | return "DW_AT_MIPS_tail_loop_begin"; | |
7804 | case DW_AT_MIPS_epilog_begin: | |
7805 | return "DW_AT_MIPS_epilog_begin"; | |
7806 | case DW_AT_MIPS_loop_unroll_factor: | |
7807 | return "DW_AT_MIPS_loop_unroll_factor"; | |
7808 | case DW_AT_MIPS_software_pipeline_depth: | |
7809 | return "DW_AT_MIPS_software_pipeline_depth"; | |
e0a4f5a1 | 7810 | #endif |
c906108c SS |
7811 | case DW_AT_MIPS_linkage_name: |
7812 | return "DW_AT_MIPS_linkage_name"; | |
c906108c SS |
7813 | |
7814 | case DW_AT_sf_names: | |
7815 | return "DW_AT_sf_names"; | |
7816 | case DW_AT_src_info: | |
7817 | return "DW_AT_src_info"; | |
7818 | case DW_AT_mac_info: | |
7819 | return "DW_AT_mac_info"; | |
7820 | case DW_AT_src_coords: | |
7821 | return "DW_AT_src_coords"; | |
7822 | case DW_AT_body_begin: | |
7823 | return "DW_AT_body_begin"; | |
7824 | case DW_AT_body_end: | |
7825 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
7826 | case DW_AT_GNU_vector: |
7827 | return "DW_AT_GNU_vector"; | |
c906108c SS |
7828 | default: |
7829 | return "DW_AT_<unknown>"; | |
7830 | } | |
7831 | } | |
7832 | ||
7833 | /* Convert a DWARF value form code into its string name. */ | |
7834 | ||
7835 | static char * | |
aa1ee363 | 7836 | dwarf_form_name (unsigned form) |
c906108c SS |
7837 | { |
7838 | switch (form) | |
7839 | { | |
7840 | case DW_FORM_addr: | |
7841 | return "DW_FORM_addr"; | |
7842 | case DW_FORM_block2: | |
7843 | return "DW_FORM_block2"; | |
7844 | case DW_FORM_block4: | |
7845 | return "DW_FORM_block4"; | |
7846 | case DW_FORM_data2: | |
7847 | return "DW_FORM_data2"; | |
7848 | case DW_FORM_data4: | |
7849 | return "DW_FORM_data4"; | |
7850 | case DW_FORM_data8: | |
7851 | return "DW_FORM_data8"; | |
7852 | case DW_FORM_string: | |
7853 | return "DW_FORM_string"; | |
7854 | case DW_FORM_block: | |
7855 | return "DW_FORM_block"; | |
7856 | case DW_FORM_block1: | |
7857 | return "DW_FORM_block1"; | |
7858 | case DW_FORM_data1: | |
7859 | return "DW_FORM_data1"; | |
7860 | case DW_FORM_flag: | |
7861 | return "DW_FORM_flag"; | |
7862 | case DW_FORM_sdata: | |
7863 | return "DW_FORM_sdata"; | |
7864 | case DW_FORM_strp: | |
7865 | return "DW_FORM_strp"; | |
7866 | case DW_FORM_udata: | |
7867 | return "DW_FORM_udata"; | |
7868 | case DW_FORM_ref_addr: | |
7869 | return "DW_FORM_ref_addr"; | |
7870 | case DW_FORM_ref1: | |
7871 | return "DW_FORM_ref1"; | |
7872 | case DW_FORM_ref2: | |
7873 | return "DW_FORM_ref2"; | |
7874 | case DW_FORM_ref4: | |
7875 | return "DW_FORM_ref4"; | |
7876 | case DW_FORM_ref8: | |
7877 | return "DW_FORM_ref8"; | |
7878 | case DW_FORM_ref_udata: | |
7879 | return "DW_FORM_ref_udata"; | |
7880 | case DW_FORM_indirect: | |
7881 | return "DW_FORM_indirect"; | |
7882 | default: | |
7883 | return "DW_FORM_<unknown>"; | |
7884 | } | |
7885 | } | |
7886 | ||
7887 | /* Convert a DWARF stack opcode into its string name. */ | |
7888 | ||
7889 | static char * | |
aa1ee363 | 7890 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
7891 | { |
7892 | switch (op) | |
7893 | { | |
7894 | case DW_OP_addr: | |
7895 | return "DW_OP_addr"; | |
7896 | case DW_OP_deref: | |
7897 | return "DW_OP_deref"; | |
7898 | case DW_OP_const1u: | |
7899 | return "DW_OP_const1u"; | |
7900 | case DW_OP_const1s: | |
7901 | return "DW_OP_const1s"; | |
7902 | case DW_OP_const2u: | |
7903 | return "DW_OP_const2u"; | |
7904 | case DW_OP_const2s: | |
7905 | return "DW_OP_const2s"; | |
7906 | case DW_OP_const4u: | |
7907 | return "DW_OP_const4u"; | |
7908 | case DW_OP_const4s: | |
7909 | return "DW_OP_const4s"; | |
7910 | case DW_OP_const8u: | |
7911 | return "DW_OP_const8u"; | |
7912 | case DW_OP_const8s: | |
7913 | return "DW_OP_const8s"; | |
7914 | case DW_OP_constu: | |
7915 | return "DW_OP_constu"; | |
7916 | case DW_OP_consts: | |
7917 | return "DW_OP_consts"; | |
7918 | case DW_OP_dup: | |
7919 | return "DW_OP_dup"; | |
7920 | case DW_OP_drop: | |
7921 | return "DW_OP_drop"; | |
7922 | case DW_OP_over: | |
7923 | return "DW_OP_over"; | |
7924 | case DW_OP_pick: | |
7925 | return "DW_OP_pick"; | |
7926 | case DW_OP_swap: | |
7927 | return "DW_OP_swap"; | |
7928 | case DW_OP_rot: | |
7929 | return "DW_OP_rot"; | |
7930 | case DW_OP_xderef: | |
7931 | return "DW_OP_xderef"; | |
7932 | case DW_OP_abs: | |
7933 | return "DW_OP_abs"; | |
7934 | case DW_OP_and: | |
7935 | return "DW_OP_and"; | |
7936 | case DW_OP_div: | |
7937 | return "DW_OP_div"; | |
7938 | case DW_OP_minus: | |
7939 | return "DW_OP_minus"; | |
7940 | case DW_OP_mod: | |
7941 | return "DW_OP_mod"; | |
7942 | case DW_OP_mul: | |
7943 | return "DW_OP_mul"; | |
7944 | case DW_OP_neg: | |
7945 | return "DW_OP_neg"; | |
7946 | case DW_OP_not: | |
7947 | return "DW_OP_not"; | |
7948 | case DW_OP_or: | |
7949 | return "DW_OP_or"; | |
7950 | case DW_OP_plus: | |
7951 | return "DW_OP_plus"; | |
7952 | case DW_OP_plus_uconst: | |
7953 | return "DW_OP_plus_uconst"; | |
7954 | case DW_OP_shl: | |
7955 | return "DW_OP_shl"; | |
7956 | case DW_OP_shr: | |
7957 | return "DW_OP_shr"; | |
7958 | case DW_OP_shra: | |
7959 | return "DW_OP_shra"; | |
7960 | case DW_OP_xor: | |
7961 | return "DW_OP_xor"; | |
7962 | case DW_OP_bra: | |
7963 | return "DW_OP_bra"; | |
7964 | case DW_OP_eq: | |
7965 | return "DW_OP_eq"; | |
7966 | case DW_OP_ge: | |
7967 | return "DW_OP_ge"; | |
7968 | case DW_OP_gt: | |
7969 | return "DW_OP_gt"; | |
7970 | case DW_OP_le: | |
7971 | return "DW_OP_le"; | |
7972 | case DW_OP_lt: | |
7973 | return "DW_OP_lt"; | |
7974 | case DW_OP_ne: | |
7975 | return "DW_OP_ne"; | |
7976 | case DW_OP_skip: | |
7977 | return "DW_OP_skip"; | |
7978 | case DW_OP_lit0: | |
7979 | return "DW_OP_lit0"; | |
7980 | case DW_OP_lit1: | |
7981 | return "DW_OP_lit1"; | |
7982 | case DW_OP_lit2: | |
7983 | return "DW_OP_lit2"; | |
7984 | case DW_OP_lit3: | |
7985 | return "DW_OP_lit3"; | |
7986 | case DW_OP_lit4: | |
7987 | return "DW_OP_lit4"; | |
7988 | case DW_OP_lit5: | |
7989 | return "DW_OP_lit5"; | |
7990 | case DW_OP_lit6: | |
7991 | return "DW_OP_lit6"; | |
7992 | case DW_OP_lit7: | |
7993 | return "DW_OP_lit7"; | |
7994 | case DW_OP_lit8: | |
7995 | return "DW_OP_lit8"; | |
7996 | case DW_OP_lit9: | |
7997 | return "DW_OP_lit9"; | |
7998 | case DW_OP_lit10: | |
7999 | return "DW_OP_lit10"; | |
8000 | case DW_OP_lit11: | |
8001 | return "DW_OP_lit11"; | |
8002 | case DW_OP_lit12: | |
8003 | return "DW_OP_lit12"; | |
8004 | case DW_OP_lit13: | |
8005 | return "DW_OP_lit13"; | |
8006 | case DW_OP_lit14: | |
8007 | return "DW_OP_lit14"; | |
8008 | case DW_OP_lit15: | |
8009 | return "DW_OP_lit15"; | |
8010 | case DW_OP_lit16: | |
8011 | return "DW_OP_lit16"; | |
8012 | case DW_OP_lit17: | |
8013 | return "DW_OP_lit17"; | |
8014 | case DW_OP_lit18: | |
8015 | return "DW_OP_lit18"; | |
8016 | case DW_OP_lit19: | |
8017 | return "DW_OP_lit19"; | |
8018 | case DW_OP_lit20: | |
8019 | return "DW_OP_lit20"; | |
8020 | case DW_OP_lit21: | |
8021 | return "DW_OP_lit21"; | |
8022 | case DW_OP_lit22: | |
8023 | return "DW_OP_lit22"; | |
8024 | case DW_OP_lit23: | |
8025 | return "DW_OP_lit23"; | |
8026 | case DW_OP_lit24: | |
8027 | return "DW_OP_lit24"; | |
8028 | case DW_OP_lit25: | |
8029 | return "DW_OP_lit25"; | |
8030 | case DW_OP_lit26: | |
8031 | return "DW_OP_lit26"; | |
8032 | case DW_OP_lit27: | |
8033 | return "DW_OP_lit27"; | |
8034 | case DW_OP_lit28: | |
8035 | return "DW_OP_lit28"; | |
8036 | case DW_OP_lit29: | |
8037 | return "DW_OP_lit29"; | |
8038 | case DW_OP_lit30: | |
8039 | return "DW_OP_lit30"; | |
8040 | case DW_OP_lit31: | |
8041 | return "DW_OP_lit31"; | |
8042 | case DW_OP_reg0: | |
8043 | return "DW_OP_reg0"; | |
8044 | case DW_OP_reg1: | |
8045 | return "DW_OP_reg1"; | |
8046 | case DW_OP_reg2: | |
8047 | return "DW_OP_reg2"; | |
8048 | case DW_OP_reg3: | |
8049 | return "DW_OP_reg3"; | |
8050 | case DW_OP_reg4: | |
8051 | return "DW_OP_reg4"; | |
8052 | case DW_OP_reg5: | |
8053 | return "DW_OP_reg5"; | |
8054 | case DW_OP_reg6: | |
8055 | return "DW_OP_reg6"; | |
8056 | case DW_OP_reg7: | |
8057 | return "DW_OP_reg7"; | |
8058 | case DW_OP_reg8: | |
8059 | return "DW_OP_reg8"; | |
8060 | case DW_OP_reg9: | |
8061 | return "DW_OP_reg9"; | |
8062 | case DW_OP_reg10: | |
8063 | return "DW_OP_reg10"; | |
8064 | case DW_OP_reg11: | |
8065 | return "DW_OP_reg11"; | |
8066 | case DW_OP_reg12: | |
8067 | return "DW_OP_reg12"; | |
8068 | case DW_OP_reg13: | |
8069 | return "DW_OP_reg13"; | |
8070 | case DW_OP_reg14: | |
8071 | return "DW_OP_reg14"; | |
8072 | case DW_OP_reg15: | |
8073 | return "DW_OP_reg15"; | |
8074 | case DW_OP_reg16: | |
8075 | return "DW_OP_reg16"; | |
8076 | case DW_OP_reg17: | |
8077 | return "DW_OP_reg17"; | |
8078 | case DW_OP_reg18: | |
8079 | return "DW_OP_reg18"; | |
8080 | case DW_OP_reg19: | |
8081 | return "DW_OP_reg19"; | |
8082 | case DW_OP_reg20: | |
8083 | return "DW_OP_reg20"; | |
8084 | case DW_OP_reg21: | |
8085 | return "DW_OP_reg21"; | |
8086 | case DW_OP_reg22: | |
8087 | return "DW_OP_reg22"; | |
8088 | case DW_OP_reg23: | |
8089 | return "DW_OP_reg23"; | |
8090 | case DW_OP_reg24: | |
8091 | return "DW_OP_reg24"; | |
8092 | case DW_OP_reg25: | |
8093 | return "DW_OP_reg25"; | |
8094 | case DW_OP_reg26: | |
8095 | return "DW_OP_reg26"; | |
8096 | case DW_OP_reg27: | |
8097 | return "DW_OP_reg27"; | |
8098 | case DW_OP_reg28: | |
8099 | return "DW_OP_reg28"; | |
8100 | case DW_OP_reg29: | |
8101 | return "DW_OP_reg29"; | |
8102 | case DW_OP_reg30: | |
8103 | return "DW_OP_reg30"; | |
8104 | case DW_OP_reg31: | |
8105 | return "DW_OP_reg31"; | |
8106 | case DW_OP_breg0: | |
8107 | return "DW_OP_breg0"; | |
8108 | case DW_OP_breg1: | |
8109 | return "DW_OP_breg1"; | |
8110 | case DW_OP_breg2: | |
8111 | return "DW_OP_breg2"; | |
8112 | case DW_OP_breg3: | |
8113 | return "DW_OP_breg3"; | |
8114 | case DW_OP_breg4: | |
8115 | return "DW_OP_breg4"; | |
8116 | case DW_OP_breg5: | |
8117 | return "DW_OP_breg5"; | |
8118 | case DW_OP_breg6: | |
8119 | return "DW_OP_breg6"; | |
8120 | case DW_OP_breg7: | |
8121 | return "DW_OP_breg7"; | |
8122 | case DW_OP_breg8: | |
8123 | return "DW_OP_breg8"; | |
8124 | case DW_OP_breg9: | |
8125 | return "DW_OP_breg9"; | |
8126 | case DW_OP_breg10: | |
8127 | return "DW_OP_breg10"; | |
8128 | case DW_OP_breg11: | |
8129 | return "DW_OP_breg11"; | |
8130 | case DW_OP_breg12: | |
8131 | return "DW_OP_breg12"; | |
8132 | case DW_OP_breg13: | |
8133 | return "DW_OP_breg13"; | |
8134 | case DW_OP_breg14: | |
8135 | return "DW_OP_breg14"; | |
8136 | case DW_OP_breg15: | |
8137 | return "DW_OP_breg15"; | |
8138 | case DW_OP_breg16: | |
8139 | return "DW_OP_breg16"; | |
8140 | case DW_OP_breg17: | |
8141 | return "DW_OP_breg17"; | |
8142 | case DW_OP_breg18: | |
8143 | return "DW_OP_breg18"; | |
8144 | case DW_OP_breg19: | |
8145 | return "DW_OP_breg19"; | |
8146 | case DW_OP_breg20: | |
8147 | return "DW_OP_breg20"; | |
8148 | case DW_OP_breg21: | |
8149 | return "DW_OP_breg21"; | |
8150 | case DW_OP_breg22: | |
8151 | return "DW_OP_breg22"; | |
8152 | case DW_OP_breg23: | |
8153 | return "DW_OP_breg23"; | |
8154 | case DW_OP_breg24: | |
8155 | return "DW_OP_breg24"; | |
8156 | case DW_OP_breg25: | |
8157 | return "DW_OP_breg25"; | |
8158 | case DW_OP_breg26: | |
8159 | return "DW_OP_breg26"; | |
8160 | case DW_OP_breg27: | |
8161 | return "DW_OP_breg27"; | |
8162 | case DW_OP_breg28: | |
8163 | return "DW_OP_breg28"; | |
8164 | case DW_OP_breg29: | |
8165 | return "DW_OP_breg29"; | |
8166 | case DW_OP_breg30: | |
8167 | return "DW_OP_breg30"; | |
8168 | case DW_OP_breg31: | |
8169 | return "DW_OP_breg31"; | |
8170 | case DW_OP_regx: | |
8171 | return "DW_OP_regx"; | |
8172 | case DW_OP_fbreg: | |
8173 | return "DW_OP_fbreg"; | |
8174 | case DW_OP_bregx: | |
8175 | return "DW_OP_bregx"; | |
8176 | case DW_OP_piece: | |
8177 | return "DW_OP_piece"; | |
8178 | case DW_OP_deref_size: | |
8179 | return "DW_OP_deref_size"; | |
8180 | case DW_OP_xderef_size: | |
8181 | return "DW_OP_xderef_size"; | |
8182 | case DW_OP_nop: | |
8183 | return "DW_OP_nop"; | |
ed348acc EZ |
8184 | /* DWARF 3 extensions. */ |
8185 | case DW_OP_push_object_address: | |
8186 | return "DW_OP_push_object_address"; | |
8187 | case DW_OP_call2: | |
8188 | return "DW_OP_call2"; | |
8189 | case DW_OP_call4: | |
8190 | return "DW_OP_call4"; | |
8191 | case DW_OP_call_ref: | |
8192 | return "DW_OP_call_ref"; | |
8193 | /* GNU extensions. */ | |
8194 | case DW_OP_GNU_push_tls_address: | |
8195 | return "DW_OP_GNU_push_tls_address"; | |
c906108c SS |
8196 | default: |
8197 | return "OP_<unknown>"; | |
8198 | } | |
8199 | } | |
8200 | ||
8201 | static char * | |
fba45db2 | 8202 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
8203 | { |
8204 | if (mybool) | |
8205 | return "TRUE"; | |
8206 | else | |
8207 | return "FALSE"; | |
8208 | } | |
8209 | ||
8210 | /* Convert a DWARF type code into its string name. */ | |
8211 | ||
8212 | static char * | |
aa1ee363 | 8213 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
8214 | { |
8215 | switch (enc) | |
8216 | { | |
8217 | case DW_ATE_address: | |
8218 | return "DW_ATE_address"; | |
8219 | case DW_ATE_boolean: | |
8220 | return "DW_ATE_boolean"; | |
8221 | case DW_ATE_complex_float: | |
8222 | return "DW_ATE_complex_float"; | |
8223 | case DW_ATE_float: | |
8224 | return "DW_ATE_float"; | |
8225 | case DW_ATE_signed: | |
8226 | return "DW_ATE_signed"; | |
8227 | case DW_ATE_signed_char: | |
8228 | return "DW_ATE_signed_char"; | |
8229 | case DW_ATE_unsigned: | |
8230 | return "DW_ATE_unsigned"; | |
8231 | case DW_ATE_unsigned_char: | |
8232 | return "DW_ATE_unsigned_char"; | |
d9fa45fe DC |
8233 | case DW_ATE_imaginary_float: |
8234 | return "DW_ATE_imaginary_float"; | |
c906108c SS |
8235 | default: |
8236 | return "DW_ATE_<unknown>"; | |
8237 | } | |
8238 | } | |
8239 | ||
8240 | /* Convert a DWARF call frame info operation to its string name. */ | |
8241 | ||
8242 | #if 0 | |
8243 | static char * | |
aa1ee363 | 8244 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
8245 | { |
8246 | switch (cfi_opc) | |
8247 | { | |
8248 | case DW_CFA_advance_loc: | |
8249 | return "DW_CFA_advance_loc"; | |
8250 | case DW_CFA_offset: | |
8251 | return "DW_CFA_offset"; | |
8252 | case DW_CFA_restore: | |
8253 | return "DW_CFA_restore"; | |
8254 | case DW_CFA_nop: | |
8255 | return "DW_CFA_nop"; | |
8256 | case DW_CFA_set_loc: | |
8257 | return "DW_CFA_set_loc"; | |
8258 | case DW_CFA_advance_loc1: | |
8259 | return "DW_CFA_advance_loc1"; | |
8260 | case DW_CFA_advance_loc2: | |
8261 | return "DW_CFA_advance_loc2"; | |
8262 | case DW_CFA_advance_loc4: | |
8263 | return "DW_CFA_advance_loc4"; | |
8264 | case DW_CFA_offset_extended: | |
8265 | return "DW_CFA_offset_extended"; | |
8266 | case DW_CFA_restore_extended: | |
8267 | return "DW_CFA_restore_extended"; | |
8268 | case DW_CFA_undefined: | |
8269 | return "DW_CFA_undefined"; | |
8270 | case DW_CFA_same_value: | |
8271 | return "DW_CFA_same_value"; | |
8272 | case DW_CFA_register: | |
8273 | return "DW_CFA_register"; | |
8274 | case DW_CFA_remember_state: | |
8275 | return "DW_CFA_remember_state"; | |
8276 | case DW_CFA_restore_state: | |
8277 | return "DW_CFA_restore_state"; | |
8278 | case DW_CFA_def_cfa: | |
8279 | return "DW_CFA_def_cfa"; | |
8280 | case DW_CFA_def_cfa_register: | |
8281 | return "DW_CFA_def_cfa_register"; | |
8282 | case DW_CFA_def_cfa_offset: | |
8283 | return "DW_CFA_def_cfa_offset"; | |
985cb1a3 JM |
8284 | |
8285 | /* DWARF 3 */ | |
8286 | case DW_CFA_def_cfa_expression: | |
8287 | return "DW_CFA_def_cfa_expression"; | |
8288 | case DW_CFA_expression: | |
8289 | return "DW_CFA_expression"; | |
8290 | case DW_CFA_offset_extended_sf: | |
8291 | return "DW_CFA_offset_extended_sf"; | |
8292 | case DW_CFA_def_cfa_sf: | |
8293 | return "DW_CFA_def_cfa_sf"; | |
8294 | case DW_CFA_def_cfa_offset_sf: | |
8295 | return "DW_CFA_def_cfa_offset_sf"; | |
8296 | ||
c906108c SS |
8297 | /* SGI/MIPS specific */ |
8298 | case DW_CFA_MIPS_advance_loc8: | |
8299 | return "DW_CFA_MIPS_advance_loc8"; | |
985cb1a3 JM |
8300 | |
8301 | /* GNU extensions */ | |
8302 | case DW_CFA_GNU_window_save: | |
8303 | return "DW_CFA_GNU_window_save"; | |
8304 | case DW_CFA_GNU_args_size: | |
8305 | return "DW_CFA_GNU_args_size"; | |
8306 | case DW_CFA_GNU_negative_offset_extended: | |
8307 | return "DW_CFA_GNU_negative_offset_extended"; | |
8308 | ||
c906108c SS |
8309 | default: |
8310 | return "DW_CFA_<unknown>"; | |
8311 | } | |
8312 | } | |
8313 | #endif | |
8314 | ||
f9aca02d | 8315 | static void |
fba45db2 | 8316 | dump_die (struct die_info *die) |
c906108c SS |
8317 | { |
8318 | unsigned int i; | |
8319 | ||
48cd0caa | 8320 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 8321 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 8322 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 8323 | dwarf_bool_name (die->child != NULL)); |
c906108c | 8324 | |
48cd0caa | 8325 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
8326 | for (i = 0; i < die->num_attrs; ++i) |
8327 | { | |
48cd0caa | 8328 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
8329 | dwarf_attr_name (die->attrs[i].name), |
8330 | dwarf_form_name (die->attrs[i].form)); | |
8331 | switch (die->attrs[i].form) | |
8332 | { | |
8333 | case DW_FORM_ref_addr: | |
8334 | case DW_FORM_addr: | |
48cd0caa | 8335 | fprintf_unfiltered (gdb_stderr, "address: "); |
c906108c SS |
8336 | print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr); |
8337 | break; | |
8338 | case DW_FORM_block2: | |
8339 | case DW_FORM_block4: | |
8340 | case DW_FORM_block: | |
8341 | case DW_FORM_block1: | |
48cd0caa | 8342 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 8343 | break; |
10b3939b DJ |
8344 | case DW_FORM_ref1: |
8345 | case DW_FORM_ref2: | |
8346 | case DW_FORM_ref4: | |
8347 | fprintf_unfiltered (gdb_stderr, "constant ref: %ld (adjusted)", | |
8348 | (long) (DW_ADDR (&die->attrs[i]))); | |
8349 | break; | |
c906108c SS |
8350 | case DW_FORM_data1: |
8351 | case DW_FORM_data2: | |
8352 | case DW_FORM_data4: | |
ce5d95e1 | 8353 | case DW_FORM_data8: |
c906108c SS |
8354 | case DW_FORM_udata: |
8355 | case DW_FORM_sdata: | |
48cd0caa | 8356 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
8357 | break; |
8358 | case DW_FORM_string: | |
4bdf3d34 | 8359 | case DW_FORM_strp: |
48cd0caa | 8360 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 8361 | DW_STRING (&die->attrs[i]) |
c5aa993b | 8362 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
8363 | break; |
8364 | case DW_FORM_flag: | |
8365 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 8366 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 8367 | else |
48cd0caa | 8368 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 8369 | break; |
a8329558 KW |
8370 | case DW_FORM_indirect: |
8371 | /* the reader will have reduced the indirect form to | |
8372 | the "base form" so this form should not occur */ | |
48cd0caa | 8373 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 8374 | break; |
c906108c | 8375 | default: |
48cd0caa | 8376 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 8377 | die->attrs[i].form); |
c906108c | 8378 | } |
48cd0caa | 8379 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
8380 | } |
8381 | } | |
8382 | ||
f9aca02d | 8383 | static void |
fba45db2 | 8384 | dump_die_list (struct die_info *die) |
c906108c SS |
8385 | { |
8386 | while (die) | |
8387 | { | |
8388 | dump_die (die); | |
639d11d3 DC |
8389 | if (die->child != NULL) |
8390 | dump_die_list (die->child); | |
8391 | if (die->sibling != NULL) | |
8392 | dump_die_list (die->sibling); | |
c906108c SS |
8393 | } |
8394 | } | |
8395 | ||
f9aca02d | 8396 | static void |
10b3939b DJ |
8397 | store_in_ref_table (unsigned int offset, struct die_info *die, |
8398 | struct dwarf2_cu *cu) | |
c906108c SS |
8399 | { |
8400 | int h; | |
8401 | struct die_info *old; | |
8402 | ||
8403 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8404 | old = cu->die_ref_table[h]; |
c906108c | 8405 | die->next_ref = old; |
10b3939b | 8406 | cu->die_ref_table[h] = die; |
c906108c SS |
8407 | } |
8408 | ||
8409 | static unsigned int | |
e142c38c | 8410 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
8411 | { |
8412 | unsigned int result = 0; | |
8413 | ||
8414 | switch (attr->form) | |
8415 | { | |
8416 | case DW_FORM_ref_addr: | |
c906108c SS |
8417 | case DW_FORM_ref1: |
8418 | case DW_FORM_ref2: | |
8419 | case DW_FORM_ref4: | |
613e1657 | 8420 | case DW_FORM_ref8: |
c906108c | 8421 | case DW_FORM_ref_udata: |
10b3939b | 8422 | result = DW_ADDR (attr); |
c906108c SS |
8423 | break; |
8424 | default: | |
4d3c2250 KB |
8425 | complaint (&symfile_complaints, |
8426 | "unsupported die ref attribute form: '%s'", | |
8427 | dwarf_form_name (attr->form)); | |
c906108c SS |
8428 | } |
8429 | return result; | |
8430 | } | |
8431 | ||
a02abb62 JB |
8432 | /* Return the constant value held by the given attribute. Return -1 |
8433 | if the value held by the attribute is not constant. */ | |
8434 | ||
8435 | static int | |
8436 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
8437 | { | |
8438 | if (attr->form == DW_FORM_sdata) | |
8439 | return DW_SND (attr); | |
8440 | else if (attr->form == DW_FORM_udata | |
8441 | || attr->form == DW_FORM_data1 | |
8442 | || attr->form == DW_FORM_data2 | |
8443 | || attr->form == DW_FORM_data4 | |
8444 | || attr->form == DW_FORM_data8) | |
8445 | return DW_UNSND (attr); | |
8446 | else | |
8447 | { | |
8448 | complaint (&symfile_complaints, "Attribute value is not a constant (%s)", | |
8449 | dwarf_form_name (attr->form)); | |
8450 | return default_value; | |
8451 | } | |
8452 | } | |
8453 | ||
f9aca02d | 8454 | static struct die_info * |
10b3939b DJ |
8455 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
8456 | struct dwarf2_cu *cu) | |
c906108c SS |
8457 | { |
8458 | struct die_info *die; | |
10b3939b | 8459 | unsigned int offset; |
c906108c | 8460 | int h; |
10b3939b DJ |
8461 | struct die_info temp_die; |
8462 | struct dwarf2_cu *target_cu; | |
8463 | ||
8464 | offset = dwarf2_get_ref_die_offset (attr, cu); | |
8465 | ||
8466 | if (DW_ADDR (attr) < cu->header.offset | |
8467 | || DW_ADDR (attr) >= cu->header.offset + cu->header.length) | |
8468 | { | |
8469 | struct dwarf2_per_cu_data *per_cu; | |
8470 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (attr), | |
8471 | cu->objfile); | |
8472 | target_cu = per_cu->cu; | |
8473 | } | |
8474 | else | |
8475 | target_cu = cu; | |
c906108c SS |
8476 | |
8477 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8478 | die = target_cu->die_ref_table[h]; |
c906108c SS |
8479 | while (die) |
8480 | { | |
8481 | if (die->offset == offset) | |
10b3939b | 8482 | return die; |
c906108c SS |
8483 | die = die->next_ref; |
8484 | } | |
10b3939b DJ |
8485 | |
8486 | error ("Dwarf Error: Cannot find DIE at 0x%lx referenced from DIE " | |
8487 | "at 0x%lx [in module %s]", | |
8488 | (long) src_die->offset, (long) offset, cu->objfile->name); | |
8489 | ||
c906108c SS |
8490 | return NULL; |
8491 | } | |
8492 | ||
8493 | static struct type * | |
e142c38c DJ |
8494 | dwarf2_fundamental_type (struct objfile *objfile, int typeid, |
8495 | struct dwarf2_cu *cu) | |
c906108c SS |
8496 | { |
8497 | if (typeid < 0 || typeid >= FT_NUM_MEMBERS) | |
8498 | { | |
659b0389 ML |
8499 | error ("Dwarf Error: internal error - invalid fundamental type id %d [in module %s]", |
8500 | typeid, objfile->name); | |
c906108c SS |
8501 | } |
8502 | ||
8503 | /* Look for this particular type in the fundamental type vector. If | |
8504 | one is not found, create and install one appropriate for the | |
8505 | current language and the current target machine. */ | |
8506 | ||
e142c38c | 8507 | if (cu->ftypes[typeid] == NULL) |
c906108c | 8508 | { |
e142c38c | 8509 | cu->ftypes[typeid] = cu->language_defn->la_fund_type (objfile, typeid); |
c906108c SS |
8510 | } |
8511 | ||
e142c38c | 8512 | return (cu->ftypes[typeid]); |
c906108c SS |
8513 | } |
8514 | ||
8515 | /* Decode simple location descriptions. | |
8516 | Given a pointer to a dwarf block that defines a location, compute | |
8517 | the location and return the value. | |
8518 | ||
4cecd739 DJ |
8519 | NOTE drow/2003-11-18: This function is called in two situations |
8520 | now: for the address of static or global variables (partial symbols | |
8521 | only) and for offsets into structures which are expected to be | |
8522 | (more or less) constant. The partial symbol case should go away, | |
8523 | and only the constant case should remain. That will let this | |
8524 | function complain more accurately. A few special modes are allowed | |
8525 | without complaint for global variables (for instance, global | |
8526 | register values and thread-local values). | |
c906108c SS |
8527 | |
8528 | A location description containing no operations indicates that the | |
4cecd739 | 8529 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
8530 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
8531 | callers will only want a very basic result and this can become a | |
8532 | complaint. | |
c906108c SS |
8533 | |
8534 | When the result is a register number, the global isreg flag is set, | |
8535 | otherwise it is cleared. | |
8536 | ||
c906108c SS |
8537 | Note that stack[0] is unused except as a default error return. |
8538 | Note that stack overflow is not yet handled. */ | |
8539 | ||
8540 | static CORE_ADDR | |
e7c27a73 | 8541 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 8542 | { |
e7c27a73 DJ |
8543 | struct objfile *objfile = cu->objfile; |
8544 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
8545 | int i; |
8546 | int size = blk->size; | |
8547 | char *data = blk->data; | |
8548 | CORE_ADDR stack[64]; | |
8549 | int stacki; | |
8550 | unsigned int bytes_read, unsnd; | |
8551 | unsigned char op; | |
8552 | ||
8553 | i = 0; | |
8554 | stacki = 0; | |
8555 | stack[stacki] = 0; | |
8556 | isreg = 0; | |
c906108c SS |
8557 | |
8558 | while (i < size) | |
8559 | { | |
c906108c SS |
8560 | op = data[i++]; |
8561 | switch (op) | |
8562 | { | |
f1bea926 JM |
8563 | case DW_OP_lit0: |
8564 | case DW_OP_lit1: | |
8565 | case DW_OP_lit2: | |
8566 | case DW_OP_lit3: | |
8567 | case DW_OP_lit4: | |
8568 | case DW_OP_lit5: | |
8569 | case DW_OP_lit6: | |
8570 | case DW_OP_lit7: | |
8571 | case DW_OP_lit8: | |
8572 | case DW_OP_lit9: | |
8573 | case DW_OP_lit10: | |
8574 | case DW_OP_lit11: | |
8575 | case DW_OP_lit12: | |
8576 | case DW_OP_lit13: | |
8577 | case DW_OP_lit14: | |
8578 | case DW_OP_lit15: | |
8579 | case DW_OP_lit16: | |
8580 | case DW_OP_lit17: | |
8581 | case DW_OP_lit18: | |
8582 | case DW_OP_lit19: | |
8583 | case DW_OP_lit20: | |
8584 | case DW_OP_lit21: | |
8585 | case DW_OP_lit22: | |
8586 | case DW_OP_lit23: | |
8587 | case DW_OP_lit24: | |
8588 | case DW_OP_lit25: | |
8589 | case DW_OP_lit26: | |
8590 | case DW_OP_lit27: | |
8591 | case DW_OP_lit28: | |
8592 | case DW_OP_lit29: | |
8593 | case DW_OP_lit30: | |
8594 | case DW_OP_lit31: | |
8595 | stack[++stacki] = op - DW_OP_lit0; | |
8596 | break; | |
8597 | ||
c906108c SS |
8598 | case DW_OP_reg0: |
8599 | case DW_OP_reg1: | |
8600 | case DW_OP_reg2: | |
8601 | case DW_OP_reg3: | |
8602 | case DW_OP_reg4: | |
8603 | case DW_OP_reg5: | |
8604 | case DW_OP_reg6: | |
8605 | case DW_OP_reg7: | |
8606 | case DW_OP_reg8: | |
8607 | case DW_OP_reg9: | |
8608 | case DW_OP_reg10: | |
8609 | case DW_OP_reg11: | |
8610 | case DW_OP_reg12: | |
8611 | case DW_OP_reg13: | |
8612 | case DW_OP_reg14: | |
8613 | case DW_OP_reg15: | |
8614 | case DW_OP_reg16: | |
8615 | case DW_OP_reg17: | |
8616 | case DW_OP_reg18: | |
8617 | case DW_OP_reg19: | |
8618 | case DW_OP_reg20: | |
8619 | case DW_OP_reg21: | |
8620 | case DW_OP_reg22: | |
8621 | case DW_OP_reg23: | |
8622 | case DW_OP_reg24: | |
8623 | case DW_OP_reg25: | |
8624 | case DW_OP_reg26: | |
8625 | case DW_OP_reg27: | |
8626 | case DW_OP_reg28: | |
8627 | case DW_OP_reg29: | |
8628 | case DW_OP_reg30: | |
8629 | case DW_OP_reg31: | |
8630 | isreg = 1; | |
8631 | stack[++stacki] = op - DW_OP_reg0; | |
4cecd739 DJ |
8632 | if (i < size) |
8633 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
8634 | break; |
8635 | ||
8636 | case DW_OP_regx: | |
8637 | isreg = 1; | |
8638 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
8639 | i += bytes_read; | |
c906108c | 8640 | stack[++stacki] = unsnd; |
4cecd739 DJ |
8641 | if (i < size) |
8642 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
8643 | break; |
8644 | ||
8645 | case DW_OP_addr: | |
107d2387 | 8646 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 8647 | cu, &bytes_read); |
107d2387 | 8648 | i += bytes_read; |
c906108c SS |
8649 | break; |
8650 | ||
8651 | case DW_OP_const1u: | |
8652 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
8653 | i += 1; | |
8654 | break; | |
8655 | ||
8656 | case DW_OP_const1s: | |
8657 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
8658 | i += 1; | |
8659 | break; | |
8660 | ||
8661 | case DW_OP_const2u: | |
8662 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
8663 | i += 2; | |
8664 | break; | |
8665 | ||
8666 | case DW_OP_const2s: | |
8667 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
8668 | i += 2; | |
8669 | break; | |
8670 | ||
8671 | case DW_OP_const4u: | |
8672 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
8673 | i += 4; | |
8674 | break; | |
8675 | ||
8676 | case DW_OP_const4s: | |
8677 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
8678 | i += 4; | |
8679 | break; | |
8680 | ||
8681 | case DW_OP_constu: | |
8682 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 8683 | &bytes_read); |
c906108c SS |
8684 | i += bytes_read; |
8685 | break; | |
8686 | ||
8687 | case DW_OP_consts: | |
8688 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
8689 | i += bytes_read; | |
8690 | break; | |
8691 | ||
f1bea926 JM |
8692 | case DW_OP_dup: |
8693 | stack[stacki + 1] = stack[stacki]; | |
8694 | stacki++; | |
8695 | break; | |
8696 | ||
c906108c SS |
8697 | case DW_OP_plus: |
8698 | stack[stacki - 1] += stack[stacki]; | |
8699 | stacki--; | |
8700 | break; | |
8701 | ||
8702 | case DW_OP_plus_uconst: | |
8703 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
8704 | i += bytes_read; | |
8705 | break; | |
8706 | ||
8707 | case DW_OP_minus: | |
f1bea926 | 8708 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
8709 | stacki--; |
8710 | break; | |
8711 | ||
7a292a7a | 8712 | case DW_OP_deref: |
7a292a7a | 8713 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
8714 | this using GDB's address_class enum. This is valid for partial |
8715 | global symbols, although the variable's address will be bogus | |
8716 | in the psymtab. */ | |
7a292a7a | 8717 | if (i < size) |
4d3c2250 | 8718 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
8719 | break; |
8720 | ||
9d774e44 | 8721 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
8722 | /* The top of the stack has the offset from the beginning |
8723 | of the thread control block at which the variable is located. */ | |
8724 | /* Nothing should follow this operator, so the top of stack would | |
8725 | be returned. */ | |
4cecd739 DJ |
8726 | /* This is valid for partial global symbols, but the variable's |
8727 | address will be bogus in the psymtab. */ | |
9d774e44 | 8728 | if (i < size) |
4d3c2250 | 8729 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
8730 | break; |
8731 | ||
c906108c | 8732 | default: |
4d3c2250 KB |
8733 | complaint (&symfile_complaints, "unsupported stack op: '%s'", |
8734 | dwarf_stack_op_name (op)); | |
c906108c SS |
8735 | return (stack[stacki]); |
8736 | } | |
8737 | } | |
8738 | return (stack[stacki]); | |
8739 | } | |
8740 | ||
8741 | /* memory allocation interface */ | |
8742 | ||
c906108c | 8743 | static struct dwarf_block * |
7b5a2f43 | 8744 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
8745 | { |
8746 | struct dwarf_block *blk; | |
8747 | ||
8748 | blk = (struct dwarf_block *) | |
7b5a2f43 | 8749 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
8750 | return (blk); |
8751 | } | |
8752 | ||
8753 | static struct abbrev_info * | |
f3dd6933 | 8754 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
8755 | { |
8756 | struct abbrev_info *abbrev; | |
8757 | ||
f3dd6933 DJ |
8758 | abbrev = (struct abbrev_info *) |
8759 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
8760 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8761 | return (abbrev); | |
8762 | } | |
8763 | ||
8764 | static struct die_info * | |
fba45db2 | 8765 | dwarf_alloc_die (void) |
c906108c SS |
8766 | { |
8767 | struct die_info *die; | |
8768 | ||
8769 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
8770 | memset (die, 0, sizeof (struct die_info)); | |
8771 | return (die); | |
8772 | } | |
2e276125 JB |
8773 | |
8774 | \f | |
8775 | /* Macro support. */ | |
8776 | ||
8777 | ||
8778 | /* Return the full name of file number I in *LH's file name table. | |
8779 | Use COMP_DIR as the name of the current directory of the | |
8780 | compilation. The result is allocated using xmalloc; the caller is | |
8781 | responsible for freeing it. */ | |
8782 | static char * | |
8783 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
8784 | { | |
8785 | struct file_entry *fe = &lh->file_names[file - 1]; | |
8786 | ||
8787 | if (IS_ABSOLUTE_PATH (fe->name)) | |
8788 | return xstrdup (fe->name); | |
8789 | else | |
8790 | { | |
8791 | const char *dir; | |
8792 | int dir_len; | |
8793 | char *full_name; | |
8794 | ||
8795 | if (fe->dir_index) | |
8796 | dir = lh->include_dirs[fe->dir_index - 1]; | |
8797 | else | |
8798 | dir = comp_dir; | |
8799 | ||
8800 | if (dir) | |
8801 | { | |
8802 | dir_len = strlen (dir); | |
8803 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
8804 | strcpy (full_name, dir); | |
8805 | full_name[dir_len] = '/'; | |
8806 | strcpy (full_name + dir_len + 1, fe->name); | |
8807 | return full_name; | |
8808 | } | |
8809 | else | |
8810 | return xstrdup (fe->name); | |
8811 | } | |
8812 | } | |
8813 | ||
8814 | ||
8815 | static struct macro_source_file * | |
8816 | macro_start_file (int file, int line, | |
8817 | struct macro_source_file *current_file, | |
8818 | const char *comp_dir, | |
8819 | struct line_header *lh, struct objfile *objfile) | |
8820 | { | |
8821 | /* The full name of this source file. */ | |
8822 | char *full_name = file_full_name (file, lh, comp_dir); | |
8823 | ||
8824 | /* We don't create a macro table for this compilation unit | |
8825 | at all until we actually get a filename. */ | |
8826 | if (! pending_macros) | |
4a146b47 | 8827 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 8828 | objfile->macro_cache); |
2e276125 JB |
8829 | |
8830 | if (! current_file) | |
8831 | /* If we have no current file, then this must be the start_file | |
8832 | directive for the compilation unit's main source file. */ | |
8833 | current_file = macro_set_main (pending_macros, full_name); | |
8834 | else | |
8835 | current_file = macro_include (current_file, line, full_name); | |
8836 | ||
8837 | xfree (full_name); | |
8838 | ||
8839 | return current_file; | |
8840 | } | |
8841 | ||
8842 | ||
8843 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
8844 | followed by a null byte. */ | |
8845 | static char * | |
8846 | copy_string (const char *buf, int len) | |
8847 | { | |
8848 | char *s = xmalloc (len + 1); | |
8849 | memcpy (s, buf, len); | |
8850 | s[len] = '\0'; | |
8851 | ||
8852 | return s; | |
8853 | } | |
8854 | ||
8855 | ||
8856 | static const char * | |
8857 | consume_improper_spaces (const char *p, const char *body) | |
8858 | { | |
8859 | if (*p == ' ') | |
8860 | { | |
4d3c2250 KB |
8861 | complaint (&symfile_complaints, |
8862 | "macro definition contains spaces in formal argument list:\n`%s'", | |
8863 | body); | |
2e276125 JB |
8864 | |
8865 | while (*p == ' ') | |
8866 | p++; | |
8867 | } | |
8868 | ||
8869 | return p; | |
8870 | } | |
8871 | ||
8872 | ||
8873 | static void | |
8874 | parse_macro_definition (struct macro_source_file *file, int line, | |
8875 | const char *body) | |
8876 | { | |
8877 | const char *p; | |
8878 | ||
8879 | /* The body string takes one of two forms. For object-like macro | |
8880 | definitions, it should be: | |
8881 | ||
8882 | <macro name> " " <definition> | |
8883 | ||
8884 | For function-like macro definitions, it should be: | |
8885 | ||
8886 | <macro name> "() " <definition> | |
8887 | or | |
8888 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
8889 | ||
8890 | Spaces may appear only where explicitly indicated, and in the | |
8891 | <definition>. | |
8892 | ||
8893 | The Dwarf 2 spec says that an object-like macro's name is always | |
8894 | followed by a space, but versions of GCC around March 2002 omit | |
8895 | the space when the macro's definition is the empty string. | |
8896 | ||
8897 | The Dwarf 2 spec says that there should be no spaces between the | |
8898 | formal arguments in a function-like macro's formal argument list, | |
8899 | but versions of GCC around March 2002 include spaces after the | |
8900 | commas. */ | |
8901 | ||
8902 | ||
8903 | /* Find the extent of the macro name. The macro name is terminated | |
8904 | by either a space or null character (for an object-like macro) or | |
8905 | an opening paren (for a function-like macro). */ | |
8906 | for (p = body; *p; p++) | |
8907 | if (*p == ' ' || *p == '(') | |
8908 | break; | |
8909 | ||
8910 | if (*p == ' ' || *p == '\0') | |
8911 | { | |
8912 | /* It's an object-like macro. */ | |
8913 | int name_len = p - body; | |
8914 | char *name = copy_string (body, name_len); | |
8915 | const char *replacement; | |
8916 | ||
8917 | if (*p == ' ') | |
8918 | replacement = body + name_len + 1; | |
8919 | else | |
8920 | { | |
4d3c2250 | 8921 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8922 | replacement = body + name_len; |
8923 | } | |
8924 | ||
8925 | macro_define_object (file, line, name, replacement); | |
8926 | ||
8927 | xfree (name); | |
8928 | } | |
8929 | else if (*p == '(') | |
8930 | { | |
8931 | /* It's a function-like macro. */ | |
8932 | char *name = copy_string (body, p - body); | |
8933 | int argc = 0; | |
8934 | int argv_size = 1; | |
8935 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
8936 | ||
8937 | p++; | |
8938 | ||
8939 | p = consume_improper_spaces (p, body); | |
8940 | ||
8941 | /* Parse the formal argument list. */ | |
8942 | while (*p && *p != ')') | |
8943 | { | |
8944 | /* Find the extent of the current argument name. */ | |
8945 | const char *arg_start = p; | |
8946 | ||
8947 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
8948 | p++; | |
8949 | ||
8950 | if (! *p || p == arg_start) | |
4d3c2250 | 8951 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8952 | else |
8953 | { | |
8954 | /* Make sure argv has room for the new argument. */ | |
8955 | if (argc >= argv_size) | |
8956 | { | |
8957 | argv_size *= 2; | |
8958 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
8959 | } | |
8960 | ||
8961 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
8962 | } | |
8963 | ||
8964 | p = consume_improper_spaces (p, body); | |
8965 | ||
8966 | /* Consume the comma, if present. */ | |
8967 | if (*p == ',') | |
8968 | { | |
8969 | p++; | |
8970 | ||
8971 | p = consume_improper_spaces (p, body); | |
8972 | } | |
8973 | } | |
8974 | ||
8975 | if (*p == ')') | |
8976 | { | |
8977 | p++; | |
8978 | ||
8979 | if (*p == ' ') | |
8980 | /* Perfectly formed definition, no complaints. */ | |
8981 | macro_define_function (file, line, name, | |
8982 | argc, (const char **) argv, | |
8983 | p + 1); | |
8984 | else if (*p == '\0') | |
8985 | { | |
8986 | /* Complain, but do define it. */ | |
4d3c2250 | 8987 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8988 | macro_define_function (file, line, name, |
8989 | argc, (const char **) argv, | |
8990 | p); | |
8991 | } | |
8992 | else | |
8993 | /* Just complain. */ | |
4d3c2250 | 8994 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8995 | } |
8996 | else | |
8997 | /* Just complain. */ | |
4d3c2250 | 8998 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
8999 | |
9000 | xfree (name); | |
9001 | { | |
9002 | int i; | |
9003 | ||
9004 | for (i = 0; i < argc; i++) | |
9005 | xfree (argv[i]); | |
9006 | } | |
9007 | xfree (argv); | |
9008 | } | |
9009 | else | |
4d3c2250 | 9010 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9011 | } |
9012 | ||
9013 | ||
9014 | static void | |
9015 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
9016 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 9017 | struct dwarf2_cu *cu) |
2e276125 JB |
9018 | { |
9019 | char *mac_ptr, *mac_end; | |
9020 | struct macro_source_file *current_file = 0; | |
9021 | ||
6502dd73 | 9022 | if (dwarf2_per_objfile->macinfo_buffer == NULL) |
2e276125 | 9023 | { |
4d3c2250 | 9024 | complaint (&symfile_complaints, "missing .debug_macinfo section"); |
2e276125 JB |
9025 | return; |
9026 | } | |
9027 | ||
6502dd73 DJ |
9028 | mac_ptr = dwarf2_per_objfile->macinfo_buffer + offset; |
9029 | mac_end = dwarf2_per_objfile->macinfo_buffer | |
9030 | + dwarf2_per_objfile->macinfo_size; | |
2e276125 JB |
9031 | |
9032 | for (;;) | |
9033 | { | |
9034 | enum dwarf_macinfo_record_type macinfo_type; | |
9035 | ||
9036 | /* Do we at least have room for a macinfo type byte? */ | |
9037 | if (mac_ptr >= mac_end) | |
9038 | { | |
4d3c2250 | 9039 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9040 | return; |
9041 | } | |
9042 | ||
9043 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
9044 | mac_ptr++; | |
9045 | ||
9046 | switch (macinfo_type) | |
9047 | { | |
9048 | /* A zero macinfo type indicates the end of the macro | |
9049 | information. */ | |
9050 | case 0: | |
9051 | return; | |
9052 | ||
9053 | case DW_MACINFO_define: | |
9054 | case DW_MACINFO_undef: | |
9055 | { | |
9056 | int bytes_read; | |
9057 | int line; | |
9058 | char *body; | |
9059 | ||
9060 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9061 | mac_ptr += bytes_read; | |
9062 | body = read_string (abfd, mac_ptr, &bytes_read); | |
9063 | mac_ptr += bytes_read; | |
9064 | ||
9065 | if (! current_file) | |
4d3c2250 KB |
9066 | complaint (&symfile_complaints, |
9067 | "debug info gives macro %s outside of any file: %s", | |
9068 | macinfo_type == | |
9069 | DW_MACINFO_define ? "definition" : macinfo_type == | |
9070 | DW_MACINFO_undef ? "undefinition" : | |
9071 | "something-or-other", body); | |
2e276125 JB |
9072 | else |
9073 | { | |
9074 | if (macinfo_type == DW_MACINFO_define) | |
9075 | parse_macro_definition (current_file, line, body); | |
9076 | else if (macinfo_type == DW_MACINFO_undef) | |
9077 | macro_undef (current_file, line, body); | |
9078 | } | |
9079 | } | |
9080 | break; | |
9081 | ||
9082 | case DW_MACINFO_start_file: | |
9083 | { | |
9084 | int bytes_read; | |
9085 | int line, file; | |
9086 | ||
9087 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9088 | mac_ptr += bytes_read; | |
9089 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9090 | mac_ptr += bytes_read; | |
9091 | ||
9092 | current_file = macro_start_file (file, line, | |
9093 | current_file, comp_dir, | |
e7c27a73 | 9094 | lh, cu->objfile); |
2e276125 JB |
9095 | } |
9096 | break; | |
9097 | ||
9098 | case DW_MACINFO_end_file: | |
9099 | if (! current_file) | |
4d3c2250 KB |
9100 | complaint (&symfile_complaints, |
9101 | "macro debug info has an unmatched `close_file' directive"); | |
2e276125 JB |
9102 | else |
9103 | { | |
9104 | current_file = current_file->included_by; | |
9105 | if (! current_file) | |
9106 | { | |
9107 | enum dwarf_macinfo_record_type next_type; | |
9108 | ||
9109 | /* GCC circa March 2002 doesn't produce the zero | |
9110 | type byte marking the end of the compilation | |
9111 | unit. Complain if it's not there, but exit no | |
9112 | matter what. */ | |
9113 | ||
9114 | /* Do we at least have room for a macinfo type byte? */ | |
9115 | if (mac_ptr >= mac_end) | |
9116 | { | |
4d3c2250 | 9117 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9118 | return; |
9119 | } | |
9120 | ||
9121 | /* We don't increment mac_ptr here, so this is just | |
9122 | a look-ahead. */ | |
9123 | next_type = read_1_byte (abfd, mac_ptr); | |
9124 | if (next_type != 0) | |
4d3c2250 KB |
9125 | complaint (&symfile_complaints, |
9126 | "no terminating 0-type entry for macros in `.debug_macinfo' section"); | |
2e276125 JB |
9127 | |
9128 | return; | |
9129 | } | |
9130 | } | |
9131 | break; | |
9132 | ||
9133 | case DW_MACINFO_vendor_ext: | |
9134 | { | |
9135 | int bytes_read; | |
9136 | int constant; | |
9137 | char *string; | |
9138 | ||
9139 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9140 | mac_ptr += bytes_read; | |
9141 | string = read_string (abfd, mac_ptr, &bytes_read); | |
9142 | mac_ptr += bytes_read; | |
9143 | ||
9144 | /* We don't recognize any vendor extensions. */ | |
9145 | } | |
9146 | break; | |
9147 | } | |
9148 | } | |
9149 | } | |
8e19ed76 PS |
9150 | |
9151 | /* Check if the attribute's form is a DW_FORM_block* | |
9152 | if so return true else false. */ | |
9153 | static int | |
9154 | attr_form_is_block (struct attribute *attr) | |
9155 | { | |
9156 | return (attr == NULL ? 0 : | |
9157 | attr->form == DW_FORM_block1 | |
9158 | || attr->form == DW_FORM_block2 | |
9159 | || attr->form == DW_FORM_block4 | |
9160 | || attr->form == DW_FORM_block); | |
9161 | } | |
4c2df51b DJ |
9162 | |
9163 | static void | |
9164 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 9165 | struct dwarf2_cu *cu) |
4c2df51b | 9166 | { |
0d53c4c4 | 9167 | if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) |
4c2df51b | 9168 | { |
0d53c4c4 | 9169 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 9170 | |
4a146b47 | 9171 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9172 | sizeof (struct dwarf2_loclist_baton)); |
e7c27a73 | 9173 | baton->objfile = cu->objfile; |
4c2df51b | 9174 | |
0d53c4c4 DJ |
9175 | /* We don't know how long the location list is, but make sure we |
9176 | don't run off the edge of the section. */ | |
6502dd73 DJ |
9177 | baton->size = dwarf2_per_objfile->loc_size - DW_UNSND (attr); |
9178 | baton->data = dwarf2_per_objfile->loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
9179 | baton->base_address = cu->header.base_address; |
9180 | if (cu->header.base_known == 0) | |
0d53c4c4 DJ |
9181 | complaint (&symfile_complaints, |
9182 | "Location list used without specifying the CU base address."); | |
4c2df51b | 9183 | |
a67af2b9 | 9184 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
9185 | SYMBOL_LOCATION_BATON (sym) = baton; |
9186 | } | |
9187 | else | |
9188 | { | |
9189 | struct dwarf2_locexpr_baton *baton; | |
9190 | ||
4a146b47 | 9191 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9192 | sizeof (struct dwarf2_locexpr_baton)); |
e7c27a73 | 9193 | baton->objfile = cu->objfile; |
0d53c4c4 DJ |
9194 | |
9195 | if (attr_form_is_block (attr)) | |
9196 | { | |
9197 | /* Note that we're just copying the block's data pointer | |
9198 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
9199 | info_buffer for SYM's objfile; right now we never release |
9200 | that buffer, but when we do clean up properly this may | |
9201 | need to change. */ | |
0d53c4c4 DJ |
9202 | baton->size = DW_BLOCK (attr)->size; |
9203 | baton->data = DW_BLOCK (attr)->data; | |
9204 | } | |
9205 | else | |
9206 | { | |
9207 | dwarf2_invalid_attrib_class_complaint ("location description", | |
9208 | SYMBOL_NATURAL_NAME (sym)); | |
9209 | baton->size = 0; | |
9210 | baton->data = NULL; | |
9211 | } | |
9212 | ||
a67af2b9 | 9213 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
9214 | SYMBOL_LOCATION_BATON (sym) = baton; |
9215 | } | |
4c2df51b | 9216 | } |
6502dd73 | 9217 | |
ae038cb0 | 9218 | /* Locate the compilation unit from CU's objfile which contains the |
10b3939b | 9219 | DIE at OFFSET. Raises an error on failure. */ |
ae038cb0 DJ |
9220 | |
9221 | static struct dwarf2_per_cu_data * | |
9222 | dwarf2_find_containing_comp_unit (unsigned long offset, | |
9223 | struct objfile *objfile) | |
9224 | { | |
9225 | struct dwarf2_per_cu_data *this_cu; | |
9226 | int low, high; | |
9227 | ||
ae038cb0 DJ |
9228 | low = 0; |
9229 | high = dwarf2_per_objfile->n_comp_units - 1; | |
9230 | while (high > low) | |
9231 | { | |
9232 | int mid = low + (high - low) / 2; | |
9233 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) | |
9234 | high = mid; | |
9235 | else | |
9236 | low = mid + 1; | |
9237 | } | |
9238 | gdb_assert (low == high); | |
9239 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
9240 | { | |
10b3939b DJ |
9241 | if (low == 0) |
9242 | error ("Dwarf Error: could not find partial DIE containing " | |
9243 | "offset 0x%lx [in module %s]", | |
9244 | (long) offset, bfd_get_filename (objfile->obfd)); | |
9245 | ||
ae038cb0 DJ |
9246 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
9247 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
9248 | } | |
9249 | else | |
9250 | { | |
9251 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
9252 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9253 | && offset >= this_cu->offset + this_cu->length) | |
9254 | error ("invalid dwarf2 offset %ld", offset); | |
9255 | gdb_assert (offset < this_cu->offset + this_cu->length); | |
9256 | return this_cu; | |
9257 | } | |
9258 | } | |
9259 | ||
10b3939b DJ |
9260 | /* Locate the compilation unit from OBJFILE which is located at exactly |
9261 | OFFSET. Raises an error on failure. */ | |
9262 | ||
ae038cb0 DJ |
9263 | static struct dwarf2_per_cu_data * |
9264 | dwarf2_find_comp_unit (unsigned long offset, struct objfile *objfile) | |
9265 | { | |
9266 | struct dwarf2_per_cu_data *this_cu; | |
9267 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
9268 | if (this_cu->offset != offset) | |
9269 | error ("no compilation unit with offset %ld\n", offset); | |
9270 | return this_cu; | |
9271 | } | |
9272 | ||
9273 | /* Release one cached compilation unit, CU. We unlink it from the tree | |
9274 | of compilation units, but we don't remove it from the read_in_chain; | |
9275 | the caller is responsible for that. */ | |
9276 | ||
9277 | static void | |
9278 | free_one_comp_unit (void *data) | |
9279 | { | |
9280 | struct dwarf2_cu *cu = data; | |
9281 | ||
9282 | if (cu->per_cu != NULL) | |
9283 | cu->per_cu->cu = NULL; | |
9284 | cu->per_cu = NULL; | |
9285 | ||
9286 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10b3939b DJ |
9287 | if (cu->dies) |
9288 | free_die_list (cu->dies); | |
ae038cb0 DJ |
9289 | |
9290 | xfree (cu); | |
9291 | } | |
9292 | ||
72bf9492 | 9293 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
9294 | when we're finished with it. We can't free the pointer itself, but be |
9295 | sure to unlink it from the cache. Also release any associated storage | |
9296 | and perform cache maintenance. | |
72bf9492 DJ |
9297 | |
9298 | Only used during partial symbol parsing. */ | |
9299 | ||
9300 | static void | |
9301 | free_stack_comp_unit (void *data) | |
9302 | { | |
9303 | struct dwarf2_cu *cu = data; | |
9304 | ||
9305 | obstack_free (&cu->comp_unit_obstack, NULL); | |
9306 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
9307 | |
9308 | if (cu->per_cu != NULL) | |
9309 | { | |
9310 | /* This compilation unit is on the stack in our caller, so we | |
9311 | should not xfree it. Just unlink it. */ | |
9312 | cu->per_cu->cu = NULL; | |
9313 | cu->per_cu = NULL; | |
9314 | ||
9315 | /* If we had a per-cu pointer, then we may have other compilation | |
9316 | units loaded, so age them now. */ | |
9317 | age_cached_comp_units (); | |
9318 | } | |
9319 | } | |
9320 | ||
9321 | /* Free all cached compilation units. */ | |
9322 | ||
9323 | static void | |
9324 | free_cached_comp_units (void *data) | |
9325 | { | |
9326 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9327 | ||
9328 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9329 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9330 | while (per_cu != NULL) | |
9331 | { | |
9332 | struct dwarf2_per_cu_data *next_cu; | |
9333 | ||
9334 | next_cu = per_cu->cu->read_in_chain; | |
9335 | ||
9336 | free_one_comp_unit (per_cu->cu); | |
9337 | *last_chain = next_cu; | |
9338 | ||
9339 | per_cu = next_cu; | |
9340 | } | |
9341 | } | |
9342 | ||
9343 | /* Increase the age counter on each cached compilation unit, and free | |
9344 | any that are too old. */ | |
9345 | ||
9346 | static void | |
9347 | age_cached_comp_units (void) | |
9348 | { | |
9349 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9350 | ||
9351 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
9352 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9353 | while (per_cu != NULL) | |
9354 | { | |
9355 | per_cu->cu->last_used ++; | |
9356 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
9357 | dwarf2_mark (per_cu->cu); | |
9358 | per_cu = per_cu->cu->read_in_chain; | |
9359 | } | |
9360 | ||
9361 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9362 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9363 | while (per_cu != NULL) | |
9364 | { | |
9365 | struct dwarf2_per_cu_data *next_cu; | |
9366 | ||
9367 | next_cu = per_cu->cu->read_in_chain; | |
9368 | ||
9369 | if (!per_cu->cu->mark) | |
9370 | { | |
9371 | free_one_comp_unit (per_cu->cu); | |
9372 | *last_chain = next_cu; | |
9373 | } | |
9374 | else | |
9375 | last_chain = &per_cu->cu->read_in_chain; | |
9376 | ||
9377 | per_cu = next_cu; | |
9378 | } | |
9379 | } | |
9380 | ||
9381 | /* Remove a single compilation unit from the cache. */ | |
9382 | ||
9383 | static void | |
9384 | free_one_cached_comp_unit (void *target_cu) | |
9385 | { | |
9386 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9387 | ||
9388 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9389 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9390 | while (per_cu != NULL) | |
9391 | { | |
9392 | struct dwarf2_per_cu_data *next_cu; | |
9393 | ||
9394 | next_cu = per_cu->cu->read_in_chain; | |
9395 | ||
9396 | if (per_cu->cu == target_cu) | |
9397 | { | |
9398 | free_one_comp_unit (per_cu->cu); | |
9399 | *last_chain = next_cu; | |
9400 | break; | |
9401 | } | |
9402 | else | |
9403 | last_chain = &per_cu->cu->read_in_chain; | |
9404 | ||
9405 | per_cu = next_cu; | |
9406 | } | |
9407 | } | |
9408 | ||
1c379e20 DJ |
9409 | /* A pair of DIE offset and GDB type pointer. We store these |
9410 | in a hash table separate from the DIEs, and preserve them | |
9411 | when the DIEs are flushed out of cache. */ | |
9412 | ||
9413 | struct dwarf2_offset_and_type | |
9414 | { | |
9415 | unsigned int offset; | |
9416 | struct type *type; | |
9417 | }; | |
9418 | ||
9419 | /* Hash function for a dwarf2_offset_and_type. */ | |
9420 | ||
9421 | static hashval_t | |
9422 | offset_and_type_hash (const void *item) | |
9423 | { | |
9424 | const struct dwarf2_offset_and_type *ofs = item; | |
9425 | return ofs->offset; | |
9426 | } | |
9427 | ||
9428 | /* Equality function for a dwarf2_offset_and_type. */ | |
9429 | ||
9430 | static int | |
9431 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
9432 | { | |
9433 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
9434 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9435 | return ofs_lhs->offset == ofs_rhs->offset; | |
9436 | } | |
9437 | ||
9438 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
9439 | table if necessary. */ | |
9440 | ||
9441 | static void | |
9442 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
9443 | { | |
9444 | struct dwarf2_offset_and_type **slot, ofs; | |
9445 | ||
9446 | die->type = type; | |
9447 | ||
9448 | if (cu->per_cu == NULL) | |
9449 | return; | |
9450 | ||
9451 | if (cu->per_cu->type_hash == NULL) | |
9452 | cu->per_cu->type_hash | |
9453 | = htab_create_alloc_ex (cu->header.length / 24, | |
9454 | offset_and_type_hash, | |
9455 | offset_and_type_eq, | |
9456 | NULL, | |
9457 | &cu->objfile->objfile_obstack, | |
9458 | hashtab_obstack_allocate, | |
9459 | dummy_obstack_deallocate); | |
9460 | ||
9461 | ofs.offset = die->offset; | |
9462 | ofs.type = type; | |
9463 | slot = (struct dwarf2_offset_and_type **) | |
9464 | htab_find_slot_with_hash (cu->per_cu->type_hash, &ofs, ofs.offset, INSERT); | |
9465 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); | |
9466 | **slot = ofs; | |
9467 | } | |
9468 | ||
1c379e20 DJ |
9469 | /* Find the type for DIE in TYPE_HASH, or return NULL if DIE does not |
9470 | have a saved type. */ | |
9471 | ||
9472 | static struct type * | |
9473 | get_die_type (struct die_info *die, htab_t type_hash) | |
9474 | { | |
9475 | struct dwarf2_offset_and_type *slot, ofs; | |
9476 | ||
9477 | ofs.offset = die->offset; | |
9478 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
9479 | if (slot) | |
9480 | return slot->type; | |
9481 | else | |
9482 | return NULL; | |
9483 | } | |
9484 | ||
9485 | /* Restore the types of the DIE tree starting at START_DIE from the hash | |
9486 | table saved in CU. */ | |
9487 | ||
9488 | static void | |
9489 | reset_die_and_siblings_types (struct die_info *start_die, struct dwarf2_cu *cu) | |
9490 | { | |
9491 | struct die_info *die; | |
9492 | ||
9493 | if (cu->per_cu->type_hash == NULL) | |
9494 | return; | |
9495 | ||
9496 | for (die = start_die; die != NULL; die = die->sibling) | |
9497 | { | |
9498 | die->type = get_die_type (die, cu->per_cu->type_hash); | |
9499 | if (die->child != NULL) | |
9500 | reset_die_and_siblings_types (die->child, cu); | |
9501 | } | |
9502 | } | |
9503 | ||
10b3939b DJ |
9504 | /* Set the mark field in CU and in every other compilation unit in the |
9505 | cache that we must keep because we are keeping CU. */ | |
9506 | ||
9507 | /* Add a dependence relationship from CU to REF_PER_CU. */ | |
9508 | ||
9509 | static void | |
9510 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
9511 | struct dwarf2_per_cu_data *ref_per_cu) | |
9512 | { | |
9513 | void **slot; | |
9514 | ||
9515 | if (cu->dependencies == NULL) | |
9516 | cu->dependencies | |
9517 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
9518 | NULL, &cu->comp_unit_obstack, | |
9519 | hashtab_obstack_allocate, | |
9520 | dummy_obstack_deallocate); | |
9521 | ||
9522 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
9523 | if (*slot == NULL) | |
9524 | *slot = ref_per_cu; | |
9525 | } | |
1c379e20 | 9526 | |
ae038cb0 DJ |
9527 | /* Set the mark field in CU and in every other compilation unit in the |
9528 | cache that we must keep because we are keeping CU. */ | |
9529 | ||
10b3939b DJ |
9530 | static int |
9531 | dwarf2_mark_helper (void **slot, void *data) | |
9532 | { | |
9533 | struct dwarf2_per_cu_data *per_cu; | |
9534 | ||
9535 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
9536 | if (per_cu->cu->mark) | |
9537 | return 1; | |
9538 | per_cu->cu->mark = 1; | |
9539 | ||
9540 | if (per_cu->cu->dependencies != NULL) | |
9541 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
9542 | ||
9543 | return 1; | |
9544 | } | |
9545 | ||
ae038cb0 DJ |
9546 | static void |
9547 | dwarf2_mark (struct dwarf2_cu *cu) | |
9548 | { | |
9549 | if (cu->mark) | |
9550 | return; | |
9551 | cu->mark = 1; | |
10b3939b DJ |
9552 | if (cu->dependencies != NULL) |
9553 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
9554 | } |
9555 | ||
9556 | static void | |
9557 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
9558 | { | |
9559 | while (per_cu) | |
9560 | { | |
9561 | per_cu->cu->mark = 0; | |
9562 | per_cu = per_cu->cu->read_in_chain; | |
9563 | } | |
72bf9492 DJ |
9564 | } |
9565 | ||
9566 | /* Allocation function for the libiberty hash table which uses an | |
9567 | obstack. */ | |
9568 | ||
9569 | static void * | |
9570 | hashtab_obstack_allocate (void *data, size_t size, size_t count) | |
9571 | { | |
9572 | unsigned int total = size * count; | |
9573 | void *ptr = obstack_alloc ((struct obstack *) data, total); | |
9574 | memset (ptr, 0, total); | |
9575 | return ptr; | |
9576 | } | |
9577 | ||
9578 | /* Trivial deallocation function for the libiberty splay tree and hash | |
9579 | table - don't deallocate anything. Rely on later deletion of the | |
9580 | obstack. */ | |
9581 | ||
9582 | static void | |
9583 | dummy_obstack_deallocate (void *object, void *data) | |
9584 | { | |
9585 | return; | |
9586 | } | |
9587 | ||
9588 | /* Trivial hash function for partial_die_info: the hash value of a DIE | |
9589 | is its offset in .debug_info for this objfile. */ | |
9590 | ||
9591 | static hashval_t | |
9592 | partial_die_hash (const void *item) | |
9593 | { | |
9594 | const struct partial_die_info *part_die = item; | |
9595 | return part_die->offset; | |
9596 | } | |
9597 | ||
9598 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
9599 | are equal if they have the same offset. */ | |
9600 | ||
9601 | static int | |
9602 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
9603 | { | |
9604 | const struct partial_die_info *part_die_lhs = item_lhs; | |
9605 | const struct partial_die_info *part_die_rhs = item_rhs; | |
9606 | return part_die_lhs->offset == part_die_rhs->offset; | |
9607 | } | |
9608 | ||
ae038cb0 DJ |
9609 | static struct cmd_list_element *set_dwarf2_cmdlist; |
9610 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
9611 | ||
9612 | static void | |
9613 | set_dwarf2_cmd (char *args, int from_tty) | |
9614 | { | |
9615 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
9616 | } | |
9617 | ||
9618 | static void | |
9619 | show_dwarf2_cmd (char *args, int from_tty) | |
9620 | { | |
9621 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
9622 | } | |
9623 | ||
6502dd73 DJ |
9624 | void _initialize_dwarf2_read (void); |
9625 | ||
9626 | void | |
9627 | _initialize_dwarf2_read (void) | |
9628 | { | |
9629 | dwarf2_objfile_data_key = register_objfile_data (); | |
ae038cb0 DJ |
9630 | |
9631 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, | |
9632 | "Set DWARF 2 specific variables.\n" | |
9633 | "Configure DWARF 2 variables such as the cache size", | |
9634 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", | |
9635 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
9636 | ||
9637 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, | |
9638 | "Show DWARF 2 specific variables\n" | |
9639 | "Show DWARF 2 variables such as the cache size", | |
9640 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", | |
9641 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
9642 | ||
9643 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
9644 | &dwarf2_max_cache_age, | |
9645 | "Set the upper bound on the age of cached " | |
9646 | "dwarf2 compilation units.", | |
9647 | "Show the upper bound on the age of cached " | |
9648 | "dwarf2 compilation units.", | |
9649 | "A higher limit means that cached " | |
9650 | "compilation units will be stored\n" | |
9651 | "in memory longer, and more total memory will " | |
9652 | "be used. Zero disables\n" | |
9653 | "caching, which can slow down startup.", | |
9654 | "The upper bound on the age of cached " | |
9655 | "dwarf2 compilation units is %d.", | |
9656 | NULL, NULL, &set_dwarf2_cmdlist, | |
9657 | &show_dwarf2_cmdlist); | |
6502dd73 | 9658 | } |