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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
4 | 2004, 2005, 2006, 2007 Free Software Foundation, Inc. | |
c906108c SS |
5 | |
6 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
7 | Inc. with support from Florida State University (under contract | |
8 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
9 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
10 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
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 | |
197e01b6 EZ |
27 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
28 | Boston, MA 02110-1301, 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. */ | |
fe1b8b76 JB |
164 | gdb_byte *info_buffer; |
165 | gdb_byte *abbrev_buffer; | |
166 | gdb_byte *line_buffer; | |
167 | gdb_byte *str_buffer; | |
168 | gdb_byte *macinfo_buffer; | |
169 | gdb_byte *ranges_buffer; | |
170 | gdb_byte *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; | |
72dca2f5 FR |
182 | |
183 | /* A flag indicating wether this objfile has a section loaded at a | |
184 | VMA of 0. */ | |
185 | int has_section_at_zero; | |
6502dd73 DJ |
186 | }; |
187 | ||
188 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 189 | |
086df311 DJ |
190 | static asection *dwarf_info_section; |
191 | static asection *dwarf_abbrev_section; | |
192 | static asection *dwarf_line_section; | |
193 | static asection *dwarf_pubnames_section; | |
194 | static asection *dwarf_aranges_section; | |
195 | static asection *dwarf_loc_section; | |
196 | static asection *dwarf_macinfo_section; | |
197 | static asection *dwarf_str_section; | |
198 | static asection *dwarf_ranges_section; | |
199 | asection *dwarf_frame_section; | |
200 | asection *dwarf_eh_frame_section; | |
201 | ||
c906108c SS |
202 | /* names of the debugging sections */ |
203 | ||
204 | #define INFO_SECTION ".debug_info" | |
205 | #define ABBREV_SECTION ".debug_abbrev" | |
206 | #define LINE_SECTION ".debug_line" | |
207 | #define PUBNAMES_SECTION ".debug_pubnames" | |
208 | #define ARANGES_SECTION ".debug_aranges" | |
209 | #define LOC_SECTION ".debug_loc" | |
210 | #define MACINFO_SECTION ".debug_macinfo" | |
211 | #define STR_SECTION ".debug_str" | |
af34e669 | 212 | #define RANGES_SECTION ".debug_ranges" |
b6af0555 JS |
213 | #define FRAME_SECTION ".debug_frame" |
214 | #define EH_FRAME_SECTION ".eh_frame" | |
c906108c SS |
215 | |
216 | /* local data types */ | |
217 | ||
57349743 JB |
218 | /* We hold several abbreviation tables in memory at the same time. */ |
219 | #ifndef ABBREV_HASH_SIZE | |
220 | #define ABBREV_HASH_SIZE 121 | |
221 | #endif | |
222 | ||
107d2387 AC |
223 | /* The data in a compilation unit header, after target2host |
224 | translation, looks like this. */ | |
c906108c | 225 | struct comp_unit_head |
a738430d MK |
226 | { |
227 | unsigned long length; | |
228 | short version; | |
229 | unsigned int abbrev_offset; | |
230 | unsigned char addr_size; | |
231 | unsigned char signed_addr_p; | |
57349743 | 232 | |
a738430d MK |
233 | /* Size of file offsets; either 4 or 8. */ |
234 | unsigned int offset_size; | |
57349743 | 235 | |
a738430d MK |
236 | /* Size of the length field; either 4 or 12. */ |
237 | unsigned int initial_length_size; | |
57349743 | 238 | |
a738430d MK |
239 | /* Offset to the first byte of this compilation unit header in the |
240 | .debug_info section, for resolving relative reference dies. */ | |
241 | unsigned int offset; | |
57349743 | 242 | |
a738430d MK |
243 | /* Pointer to this compilation unit header in the .debug_info |
244 | section. */ | |
fe1b8b76 | 245 | gdb_byte *cu_head_ptr; |
57349743 | 246 | |
a738430d MK |
247 | /* Pointer to the first die of this compilation unit. This will be |
248 | the first byte following the compilation unit header. */ | |
fe1b8b76 | 249 | gdb_byte *first_die_ptr; |
af34e669 | 250 | |
a738430d MK |
251 | /* Pointer to the next compilation unit header in the program. */ |
252 | struct comp_unit_head *next; | |
0d53c4c4 | 253 | |
a738430d MK |
254 | /* Base address of this compilation unit. */ |
255 | CORE_ADDR base_address; | |
0d53c4c4 | 256 | |
a738430d MK |
257 | /* Non-zero if base_address has been set. */ |
258 | int base_known; | |
259 | }; | |
c906108c | 260 | |
10b3939b DJ |
261 | /* Fixed size for the DIE hash table. */ |
262 | #ifndef REF_HASH_SIZE | |
263 | #define REF_HASH_SIZE 1021 | |
264 | #endif | |
265 | ||
e7c27a73 DJ |
266 | /* Internal state when decoding a particular compilation unit. */ |
267 | struct dwarf2_cu | |
268 | { | |
269 | /* The objfile containing this compilation unit. */ | |
270 | struct objfile *objfile; | |
271 | ||
272 | /* The header of the compilation unit. | |
273 | ||
274 | FIXME drow/2003-11-10: Some of the things from the comp_unit_head | |
f3dd6933 | 275 | should logically be moved to the dwarf2_cu structure. */ |
e7c27a73 | 276 | struct comp_unit_head header; |
e142c38c DJ |
277 | |
278 | struct function_range *first_fn, *last_fn, *cached_fn; | |
279 | ||
280 | /* The language we are debugging. */ | |
281 | enum language language; | |
282 | const struct language_defn *language_defn; | |
283 | ||
b0f35d58 DL |
284 | const char *producer; |
285 | ||
e142c38c DJ |
286 | /* The generic symbol table building routines have separate lists for |
287 | file scope symbols and all all other scopes (local scopes). So | |
288 | we need to select the right one to pass to add_symbol_to_list(). | |
289 | We do it by keeping a pointer to the correct list in list_in_scope. | |
290 | ||
291 | FIXME: The original dwarf code just treated the file scope as the | |
292 | first local scope, and all other local scopes as nested local | |
293 | scopes, and worked fine. Check to see if we really need to | |
294 | distinguish these in buildsym.c. */ | |
295 | struct pending **list_in_scope; | |
296 | ||
297 | /* Maintain an array of referenced fundamental types for the current | |
298 | compilation unit being read. For DWARF version 1, we have to construct | |
299 | the fundamental types on the fly, since no information about the | |
300 | fundamental types is supplied. Each such fundamental type is created by | |
301 | calling a language dependent routine to create the type, and then a | |
302 | pointer to that type is then placed in the array at the index specified | |
303 | by it's FT_<TYPENAME> value. The array has a fixed size set by the | |
304 | FT_NUM_MEMBERS compile time constant, which is the number of predefined | |
305 | fundamental types gdb knows how to construct. */ | |
306 | struct type *ftypes[FT_NUM_MEMBERS]; /* Fundamental types */ | |
f3dd6933 DJ |
307 | |
308 | /* DWARF abbreviation table associated with this compilation unit. */ | |
309 | struct abbrev_info **dwarf2_abbrevs; | |
310 | ||
311 | /* Storage for the abbrev table. */ | |
312 | struct obstack abbrev_obstack; | |
72bf9492 DJ |
313 | |
314 | /* Hash table holding all the loaded partial DIEs. */ | |
315 | htab_t partial_dies; | |
316 | ||
317 | /* Storage for things with the same lifetime as this read-in compilation | |
318 | unit, including partial DIEs. */ | |
319 | struct obstack comp_unit_obstack; | |
320 | ||
ae038cb0 DJ |
321 | /* When multiple dwarf2_cu structures are living in memory, this field |
322 | chains them all together, so that they can be released efficiently. | |
323 | We will probably also want a generation counter so that most-recently-used | |
324 | compilation units are cached... */ | |
325 | struct dwarf2_per_cu_data *read_in_chain; | |
326 | ||
327 | /* Backchain to our per_cu entry if the tree has been built. */ | |
328 | struct dwarf2_per_cu_data *per_cu; | |
329 | ||
330 | /* How many compilation units ago was this CU last referenced? */ | |
331 | int last_used; | |
332 | ||
10b3939b DJ |
333 | /* A hash table of die offsets for following references. */ |
334 | struct die_info *die_ref_table[REF_HASH_SIZE]; | |
335 | ||
336 | /* Full DIEs if read in. */ | |
337 | struct die_info *dies; | |
338 | ||
339 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
340 | units referenced by this one. Only set during full symbol processing; | |
341 | partial symbol tables do not have dependencies. */ | |
342 | htab_t dependencies; | |
343 | ||
ae038cb0 DJ |
344 | /* Mark used when releasing cached dies. */ |
345 | unsigned int mark : 1; | |
346 | ||
347 | /* This flag will be set if this compilation unit might include | |
348 | inter-compilation-unit references. */ | |
349 | unsigned int has_form_ref_addr : 1; | |
350 | ||
72bf9492 DJ |
351 | /* This flag will be set if this compilation unit includes any |
352 | DW_TAG_namespace DIEs. If we know that there are explicit | |
353 | DIEs for namespaces, we don't need to try to infer them | |
354 | from mangled names. */ | |
355 | unsigned int has_namespace_info : 1; | |
e7c27a73 DJ |
356 | }; |
357 | ||
10b3939b DJ |
358 | /* Persistent data held for a compilation unit, even when not |
359 | processing it. We put a pointer to this structure in the | |
360 | read_symtab_private field of the psymtab. If we encounter | |
361 | inter-compilation-unit references, we also maintain a sorted | |
362 | list of all compilation units. */ | |
363 | ||
ae038cb0 DJ |
364 | struct dwarf2_per_cu_data |
365 | { | |
5afb4e99 | 366 | /* The start offset and length of this compilation unit. 2**30-1 |
ae038cb0 DJ |
367 | bytes should suffice to store the length of any compilation unit |
368 | - if it doesn't, GDB will fall over anyway. */ | |
369 | unsigned long offset; | |
5afb4e99 | 370 | unsigned long length : 30; |
ae038cb0 DJ |
371 | |
372 | /* Flag indicating this compilation unit will be read in before | |
373 | any of the current compilation units are processed. */ | |
374 | unsigned long queued : 1; | |
375 | ||
5afb4e99 DJ |
376 | /* This flag will be set if we need to load absolutely all DIEs |
377 | for this compilation unit, instead of just the ones we think | |
378 | are interesting. It gets set if we look for a DIE in the | |
379 | hash table and don't find it. */ | |
380 | unsigned int load_all_dies : 1; | |
381 | ||
ae038cb0 DJ |
382 | /* Set iff currently read in. */ |
383 | struct dwarf2_cu *cu; | |
1c379e20 DJ |
384 | |
385 | /* If full symbols for this CU have been read in, then this field | |
386 | holds a map of DIE offsets to types. It isn't always possible | |
387 | to reconstruct this information later, so we have to preserve | |
388 | it. */ | |
1c379e20 | 389 | htab_t type_hash; |
10b3939b | 390 | |
31ffec48 DJ |
391 | /* The partial symbol table associated with this compilation unit, |
392 | or NULL for partial units (which do not have an associated | |
393 | symtab). */ | |
10b3939b | 394 | struct partial_symtab *psymtab; |
ae038cb0 DJ |
395 | }; |
396 | ||
debd256d JB |
397 | /* The line number information for a compilation unit (found in the |
398 | .debug_line section) begins with a "statement program header", | |
399 | which contains the following information. */ | |
400 | struct line_header | |
401 | { | |
402 | unsigned int total_length; | |
403 | unsigned short version; | |
404 | unsigned int header_length; | |
405 | unsigned char minimum_instruction_length; | |
406 | unsigned char default_is_stmt; | |
407 | int line_base; | |
408 | unsigned char line_range; | |
409 | unsigned char opcode_base; | |
410 | ||
411 | /* standard_opcode_lengths[i] is the number of operands for the | |
412 | standard opcode whose value is i. This means that | |
413 | standard_opcode_lengths[0] is unused, and the last meaningful | |
414 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
415 | unsigned char *standard_opcode_lengths; | |
416 | ||
417 | /* The include_directories table. NOTE! These strings are not | |
418 | allocated with xmalloc; instead, they are pointers into | |
419 | debug_line_buffer. If you try to free them, `free' will get | |
420 | indigestion. */ | |
421 | unsigned int num_include_dirs, include_dirs_size; | |
422 | char **include_dirs; | |
423 | ||
424 | /* The file_names table. NOTE! These strings are not allocated | |
425 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
426 | Don't try to free them directly. */ | |
427 | unsigned int num_file_names, file_names_size; | |
428 | struct file_entry | |
c906108c | 429 | { |
debd256d JB |
430 | char *name; |
431 | unsigned int dir_index; | |
432 | unsigned int mod_time; | |
433 | unsigned int length; | |
aaa75496 | 434 | int included_p; /* Non-zero if referenced by the Line Number Program. */ |
debd256d JB |
435 | } *file_names; |
436 | ||
437 | /* The start and end of the statement program following this | |
6502dd73 | 438 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fe1b8b76 | 439 | gdb_byte *statement_program_start, *statement_program_end; |
debd256d | 440 | }; |
c906108c SS |
441 | |
442 | /* When we construct a partial symbol table entry we only | |
443 | need this much information. */ | |
444 | struct partial_die_info | |
445 | { | |
72bf9492 | 446 | /* Offset of this DIE. */ |
c906108c | 447 | unsigned int offset; |
72bf9492 DJ |
448 | |
449 | /* DWARF-2 tag for this DIE. */ | |
450 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
451 | ||
452 | /* Language code associated with this DIE. This is only used | |
453 | for the compilation unit DIE. */ | |
454 | unsigned int language : 8; | |
455 | ||
456 | /* Assorted flags describing the data found in this DIE. */ | |
457 | unsigned int has_children : 1; | |
458 | unsigned int is_external : 1; | |
459 | unsigned int is_declaration : 1; | |
460 | unsigned int has_type : 1; | |
461 | unsigned int has_specification : 1; | |
aaa75496 | 462 | unsigned int has_stmt_list : 1; |
72bf9492 DJ |
463 | unsigned int has_pc_info : 1; |
464 | ||
465 | /* Flag set if the SCOPE field of this structure has been | |
466 | computed. */ | |
467 | unsigned int scope_set : 1; | |
468 | ||
fa4028e9 JB |
469 | /* Flag set if the DIE has a byte_size attribute. */ |
470 | unsigned int has_byte_size : 1; | |
471 | ||
72bf9492 DJ |
472 | /* The name of this DIE. Normally the value of DW_AT_name, but |
473 | sometimes DW_TAG_MIPS_linkage_name or a string computed in some | |
474 | other fashion. */ | |
c906108c | 475 | char *name; |
57c22c6c | 476 | char *dirname; |
72bf9492 DJ |
477 | |
478 | /* The scope to prepend to our children. This is generally | |
479 | allocated on the comp_unit_obstack, so will disappear | |
480 | when this compilation unit leaves the cache. */ | |
481 | char *scope; | |
482 | ||
483 | /* The location description associated with this DIE, if any. */ | |
484 | struct dwarf_block *locdesc; | |
485 | ||
486 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
c906108c SS |
487 | CORE_ADDR lowpc; |
488 | CORE_ADDR highpc; | |
72bf9492 DJ |
489 | |
490 | /* Pointer into the info_buffer pointing at the target of | |
491 | DW_AT_sibling, if any. */ | |
fe1b8b76 | 492 | gdb_byte *sibling; |
72bf9492 DJ |
493 | |
494 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
495 | DW_AT_specification (or DW_AT_abstract_origin or | |
496 | DW_AT_extension). */ | |
497 | unsigned int spec_offset; | |
498 | ||
aaa75496 JB |
499 | /* If HAS_STMT_LIST, the offset of the Line Number Information data. */ |
500 | unsigned int line_offset; | |
501 | ||
72bf9492 DJ |
502 | /* Pointers to this DIE's parent, first child, and next sibling, |
503 | if any. */ | |
504 | struct partial_die_info *die_parent, *die_child, *die_sibling; | |
c906108c SS |
505 | }; |
506 | ||
507 | /* This data structure holds the information of an abbrev. */ | |
508 | struct abbrev_info | |
509 | { | |
510 | unsigned int number; /* number identifying abbrev */ | |
511 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
512 | unsigned short has_children; /* boolean */ |
513 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
514 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
515 | struct abbrev_info *next; /* next in chain */ | |
516 | }; | |
517 | ||
518 | struct attr_abbrev | |
519 | { | |
520 | enum dwarf_attribute name; | |
521 | enum dwarf_form form; | |
522 | }; | |
523 | ||
524 | /* This data structure holds a complete die structure. */ | |
525 | struct die_info | |
526 | { | |
c5aa993b | 527 | enum dwarf_tag tag; /* Tag indicating type of die */ |
c5aa993b JM |
528 | unsigned int abbrev; /* Abbrev number */ |
529 | unsigned int offset; /* Offset in .debug_info section */ | |
530 | unsigned int num_attrs; /* Number of attributes */ | |
531 | struct attribute *attrs; /* An array of attributes */ | |
532 | struct die_info *next_ref; /* Next die in ref hash table */ | |
78ba4af6 JB |
533 | |
534 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
535 | points to this die's parent; CHILD points to the first child of | |
536 | this node; and all the children of a given node are chained | |
537 | together via their SIBLING fields, terminated by a die whose | |
538 | tag is zero. */ | |
639d11d3 DC |
539 | struct die_info *child; /* Its first child, if any. */ |
540 | struct die_info *sibling; /* Its next sibling, if any. */ | |
541 | struct die_info *parent; /* Its parent, if any. */ | |
78ba4af6 | 542 | |
c5aa993b | 543 | struct type *type; /* Cached type information */ |
c906108c SS |
544 | }; |
545 | ||
546 | /* Attributes have a name and a value */ | |
547 | struct attribute | |
548 | { | |
549 | enum dwarf_attribute name; | |
550 | enum dwarf_form form; | |
551 | union | |
552 | { | |
553 | char *str; | |
554 | struct dwarf_block *blk; | |
ce5d95e1 JB |
555 | unsigned long unsnd; |
556 | long int snd; | |
c906108c SS |
557 | CORE_ADDR addr; |
558 | } | |
559 | u; | |
560 | }; | |
561 | ||
5fb290d7 DJ |
562 | struct function_range |
563 | { | |
564 | const char *name; | |
565 | CORE_ADDR lowpc, highpc; | |
566 | int seen_line; | |
567 | struct function_range *next; | |
568 | }; | |
569 | ||
c906108c SS |
570 | /* Get at parts of an attribute structure */ |
571 | ||
572 | #define DW_STRING(attr) ((attr)->u.str) | |
573 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
574 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
575 | #define DW_SND(attr) ((attr)->u.snd) | |
576 | #define DW_ADDR(attr) ((attr)->u.addr) | |
577 | ||
578 | /* Blocks are a bunch of untyped bytes. */ | |
579 | struct dwarf_block | |
580 | { | |
581 | unsigned int size; | |
fe1b8b76 | 582 | gdb_byte *data; |
c906108c SS |
583 | }; |
584 | ||
c906108c SS |
585 | #ifndef ATTR_ALLOC_CHUNK |
586 | #define ATTR_ALLOC_CHUNK 4 | |
587 | #endif | |
588 | ||
c906108c SS |
589 | /* Allocate fields for structs, unions and enums in this size. */ |
590 | #ifndef DW_FIELD_ALLOC_CHUNK | |
591 | #define DW_FIELD_ALLOC_CHUNK 4 | |
592 | #endif | |
593 | ||
c906108c SS |
594 | /* A zeroed version of a partial die for initialization purposes. */ |
595 | static struct partial_die_info zeroed_partial_die; | |
596 | ||
c906108c SS |
597 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
598 | but this would require a corresponding change in unpack_field_as_long | |
599 | and friends. */ | |
600 | static int bits_per_byte = 8; | |
601 | ||
602 | /* The routines that read and process dies for a C struct or C++ class | |
603 | pass lists of data member fields and lists of member function fields | |
604 | in an instance of a field_info structure, as defined below. */ | |
605 | struct field_info | |
c5aa993b JM |
606 | { |
607 | /* List of data member and baseclasses fields. */ | |
608 | struct nextfield | |
609 | { | |
610 | struct nextfield *next; | |
611 | int accessibility; | |
612 | int virtuality; | |
613 | struct field field; | |
614 | } | |
615 | *fields; | |
c906108c | 616 | |
c5aa993b JM |
617 | /* Number of fields. */ |
618 | int nfields; | |
c906108c | 619 | |
c5aa993b JM |
620 | /* Number of baseclasses. */ |
621 | int nbaseclasses; | |
c906108c | 622 | |
c5aa993b JM |
623 | /* Set if the accesibility of one of the fields is not public. */ |
624 | int non_public_fields; | |
c906108c | 625 | |
c5aa993b JM |
626 | /* Member function fields array, entries are allocated in the order they |
627 | are encountered in the object file. */ | |
628 | struct nextfnfield | |
629 | { | |
630 | struct nextfnfield *next; | |
631 | struct fn_field fnfield; | |
632 | } | |
633 | *fnfields; | |
c906108c | 634 | |
c5aa993b JM |
635 | /* Member function fieldlist array, contains name of possibly overloaded |
636 | member function, number of overloaded member functions and a pointer | |
637 | to the head of the member function field chain. */ | |
638 | struct fnfieldlist | |
639 | { | |
640 | char *name; | |
641 | int length; | |
642 | struct nextfnfield *head; | |
643 | } | |
644 | *fnfieldlists; | |
c906108c | 645 | |
c5aa993b JM |
646 | /* Number of entries in the fnfieldlists array. */ |
647 | int nfnfields; | |
648 | }; | |
c906108c | 649 | |
10b3939b DJ |
650 | /* One item on the queue of compilation units to read in full symbols |
651 | for. */ | |
652 | struct dwarf2_queue_item | |
653 | { | |
654 | struct dwarf2_per_cu_data *per_cu; | |
655 | struct dwarf2_queue_item *next; | |
656 | }; | |
657 | ||
658 | /* The current queue. */ | |
659 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
660 | ||
ae038cb0 DJ |
661 | /* Loaded secondary compilation units are kept in memory until they |
662 | have not been referenced for the processing of this many | |
663 | compilation units. Set this to zero to disable caching. Cache | |
664 | sizes of up to at least twenty will improve startup time for | |
665 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
666 | static int dwarf2_max_cache_age = 5; | |
920d2a44 AC |
667 | static void |
668 | show_dwarf2_max_cache_age (struct ui_file *file, int from_tty, | |
669 | struct cmd_list_element *c, const char *value) | |
670 | { | |
671 | fprintf_filtered (file, _("\ | |
672 | The upper bound on the age of cached dwarf2 compilation units is %s.\n"), | |
673 | value); | |
674 | } | |
675 | ||
ae038cb0 | 676 | |
c906108c SS |
677 | /* Various complaints about symbol reading that don't abort the process */ |
678 | ||
4d3c2250 KB |
679 | static void |
680 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 681 | { |
4d3c2250 | 682 | complaint (&symfile_complaints, |
e2e0b3e5 | 683 | _("statement list doesn't fit in .debug_line section")); |
4d3c2250 KB |
684 | } |
685 | ||
686 | static void | |
687 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 688 | { |
e2e0b3e5 | 689 | complaint (&symfile_complaints, _("location expression too complex")); |
4d3c2250 KB |
690 | } |
691 | ||
4d3c2250 KB |
692 | static void |
693 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
694 | int arg3) | |
2e276125 | 695 | { |
4d3c2250 | 696 | complaint (&symfile_complaints, |
e2e0b3e5 | 697 | _("const value length mismatch for '%s', got %d, expected %d"), arg1, |
4d3c2250 KB |
698 | arg2, arg3); |
699 | } | |
700 | ||
701 | static void | |
702 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 703 | { |
4d3c2250 | 704 | complaint (&symfile_complaints, |
e2e0b3e5 | 705 | _("macro info runs off end of `.debug_macinfo' section")); |
4d3c2250 KB |
706 | } |
707 | ||
708 | static void | |
709 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 710 | { |
4d3c2250 | 711 | complaint (&symfile_complaints, |
e2e0b3e5 | 712 | _("macro debug info contains a malformed macro definition:\n`%s'"), |
4d3c2250 KB |
713 | arg1); |
714 | } | |
715 | ||
716 | static void | |
717 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 718 | { |
4d3c2250 | 719 | complaint (&symfile_complaints, |
e2e0b3e5 | 720 | _("invalid attribute class or form for '%s' in '%s'"), arg1, arg2); |
4d3c2250 | 721 | } |
c906108c | 722 | |
c906108c SS |
723 | /* local function prototypes */ |
724 | ||
4efb68b1 | 725 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
726 | |
727 | #if 0 | |
a14ed312 | 728 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
729 | #endif |
730 | ||
aaa75496 JB |
731 | static void dwarf2_create_include_psymtab (char *, struct partial_symtab *, |
732 | struct objfile *); | |
733 | ||
734 | static void dwarf2_build_include_psymtabs (struct dwarf2_cu *, | |
735 | struct partial_die_info *, | |
736 | struct partial_symtab *); | |
737 | ||
a14ed312 | 738 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 739 | |
72bf9492 DJ |
740 | static void scan_partial_symbols (struct partial_die_info *, |
741 | CORE_ADDR *, CORE_ADDR *, | |
742 | struct dwarf2_cu *); | |
c906108c | 743 | |
72bf9492 DJ |
744 | static void add_partial_symbol (struct partial_die_info *, |
745 | struct dwarf2_cu *); | |
63d06c5c | 746 | |
72bf9492 | 747 | static int pdi_needs_namespace (enum dwarf_tag tag); |
91c24f0a | 748 | |
72bf9492 DJ |
749 | static void add_partial_namespace (struct partial_die_info *pdi, |
750 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
751 | struct dwarf2_cu *cu); | |
63d06c5c | 752 | |
72bf9492 DJ |
753 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
754 | struct dwarf2_cu *cu); | |
91c24f0a | 755 | |
fe1b8b76 JB |
756 | static gdb_byte *locate_pdi_sibling (struct partial_die_info *orig_pdi, |
757 | gdb_byte *info_ptr, | |
758 | bfd *abfd, | |
759 | struct dwarf2_cu *cu); | |
91c24f0a | 760 | |
a14ed312 | 761 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 762 | |
a14ed312 | 763 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 764 | |
fe1b8b76 | 765 | gdb_byte *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 766 | |
e7c27a73 | 767 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 768 | |
f3dd6933 | 769 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 770 | |
fe1b8b76 | 771 | static struct abbrev_info *peek_die_abbrev (gdb_byte *, unsigned int *, |
891d2f0b | 772 | struct dwarf2_cu *); |
72bf9492 | 773 | |
57349743 | 774 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 775 | struct dwarf2_cu *); |
c906108c | 776 | |
fe1b8b76 | 777 | static struct partial_die_info *load_partial_dies (bfd *, gdb_byte *, int, |
72bf9492 DJ |
778 | struct dwarf2_cu *); |
779 | ||
fe1b8b76 JB |
780 | static gdb_byte *read_partial_die (struct partial_die_info *, |
781 | struct abbrev_info *abbrev, unsigned int, | |
782 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 783 | |
72bf9492 | 784 | static struct partial_die_info *find_partial_die (unsigned long, |
10b3939b | 785 | struct dwarf2_cu *); |
72bf9492 DJ |
786 | |
787 | static void fixup_partial_die (struct partial_die_info *, | |
788 | struct dwarf2_cu *); | |
789 | ||
fe1b8b76 JB |
790 | static gdb_byte *read_full_die (struct die_info **, bfd *, gdb_byte *, |
791 | struct dwarf2_cu *, int *); | |
c906108c | 792 | |
fe1b8b76 JB |
793 | static gdb_byte *read_attribute (struct attribute *, struct attr_abbrev *, |
794 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
c906108c | 795 | |
fe1b8b76 JB |
796 | static gdb_byte *read_attribute_value (struct attribute *, unsigned, |
797 | bfd *, gdb_byte *, struct dwarf2_cu *); | |
a8329558 | 798 | |
fe1b8b76 | 799 | static unsigned int read_1_byte (bfd *, gdb_byte *); |
c906108c | 800 | |
fe1b8b76 | 801 | static int read_1_signed_byte (bfd *, gdb_byte *); |
c906108c | 802 | |
fe1b8b76 | 803 | static unsigned int read_2_bytes (bfd *, gdb_byte *); |
c906108c | 804 | |
fe1b8b76 | 805 | static unsigned int read_4_bytes (bfd *, gdb_byte *); |
c906108c | 806 | |
fe1b8b76 | 807 | static unsigned long read_8_bytes (bfd *, gdb_byte *); |
c906108c | 808 | |
fe1b8b76 | 809 | static CORE_ADDR read_address (bfd *, gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 810 | unsigned int *); |
c906108c | 811 | |
fe1b8b76 | 812 | static LONGEST read_initial_length (bfd *, gdb_byte *, |
891d2f0b | 813 | struct comp_unit_head *, unsigned int *); |
613e1657 | 814 | |
fe1b8b76 | 815 | static LONGEST read_offset (bfd *, gdb_byte *, const struct comp_unit_head *, |
891d2f0b | 816 | unsigned int *); |
613e1657 | 817 | |
fe1b8b76 | 818 | static gdb_byte *read_n_bytes (bfd *, gdb_byte *, unsigned int); |
c906108c | 819 | |
fe1b8b76 | 820 | static char *read_string (bfd *, gdb_byte *, unsigned int *); |
c906108c | 821 | |
fe1b8b76 JB |
822 | static char *read_indirect_string (bfd *, gdb_byte *, |
823 | const struct comp_unit_head *, | |
824 | unsigned int *); | |
4bdf3d34 | 825 | |
fe1b8b76 | 826 | static unsigned long read_unsigned_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 827 | |
fe1b8b76 | 828 | static long read_signed_leb128 (bfd *, gdb_byte *, unsigned int *); |
c906108c | 829 | |
fe1b8b76 | 830 | static gdb_byte *skip_leb128 (bfd *, gdb_byte *); |
4bb7a0a7 | 831 | |
e142c38c | 832 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 833 | |
e142c38c DJ |
834 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
835 | struct dwarf2_cu *); | |
c906108c | 836 | |
05cf31d1 JB |
837 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
838 | struct dwarf2_cu *cu); | |
839 | ||
e142c38c | 840 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 841 | |
e142c38c DJ |
842 | static struct die_info *die_specification (struct die_info *die, |
843 | struct dwarf2_cu *); | |
63d06c5c | 844 | |
debd256d JB |
845 | static void free_line_header (struct line_header *lh); |
846 | ||
aaa75496 JB |
847 | static void add_file_name (struct line_header *, char *, unsigned int, |
848 | unsigned int, unsigned int); | |
849 | ||
debd256d JB |
850 | static struct line_header *(dwarf_decode_line_header |
851 | (unsigned int offset, | |
e7c27a73 | 852 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
853 | |
854 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
aaa75496 | 855 | struct dwarf2_cu *, struct partial_symtab *); |
c906108c | 856 | |
4f1520fb | 857 | static void dwarf2_start_subfile (char *, char *, char *); |
c906108c | 858 | |
a14ed312 | 859 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 860 | struct dwarf2_cu *); |
c906108c | 861 | |
a14ed312 | 862 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 863 | struct dwarf2_cu *); |
c906108c | 864 | |
2df3850c JM |
865 | static void dwarf2_const_value_data (struct attribute *attr, |
866 | struct symbol *sym, | |
867 | int bits); | |
868 | ||
e7c27a73 | 869 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 870 | |
e7c27a73 DJ |
871 | static struct type *die_containing_type (struct die_info *, |
872 | struct dwarf2_cu *); | |
c906108c | 873 | |
e7c27a73 | 874 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 875 | |
e7c27a73 | 876 | static void read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 877 | |
086ed43d | 878 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 879 | |
fe1b8b76 JB |
880 | static char *typename_concat (struct obstack *, |
881 | const char *prefix, | |
882 | const char *suffix, | |
987504bb | 883 | struct dwarf2_cu *); |
63d06c5c | 884 | |
e7c27a73 | 885 | static void read_typedef (struct die_info *, struct dwarf2_cu *); |
c906108c | 886 | |
e7c27a73 | 887 | static void read_base_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 888 | |
a02abb62 JB |
889 | static void read_subrange_type (struct die_info *die, struct dwarf2_cu *cu); |
890 | ||
e7c27a73 | 891 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 892 | |
e7c27a73 | 893 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 894 | |
e7c27a73 | 895 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 896 | |
a14ed312 | 897 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 898 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 899 | |
fae299cd DC |
900 | static void get_scope_pc_bounds (struct die_info *, |
901 | CORE_ADDR *, CORE_ADDR *, | |
902 | struct dwarf2_cu *); | |
903 | ||
a14ed312 | 904 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 905 | struct dwarf2_cu *); |
c906108c | 906 | |
a14ed312 | 907 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 908 | struct type *, struct dwarf2_cu *); |
c906108c | 909 | |
a14ed312 | 910 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 911 | struct die_info *, struct type *, |
e7c27a73 | 912 | struct dwarf2_cu *); |
c906108c | 913 | |
a14ed312 | 914 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 915 | struct type *, struct dwarf2_cu *); |
c906108c | 916 | |
134d01f1 DJ |
917 | static void read_structure_type (struct die_info *, struct dwarf2_cu *); |
918 | ||
919 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 920 | |
8176b9b8 DC |
921 | static char *determine_class_name (struct die_info *die, struct dwarf2_cu *cu); |
922 | ||
e7c27a73 | 923 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 924 | |
e7c27a73 | 925 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 926 | |
38d518c9 | 927 | static const char *namespace_name (struct die_info *die, |
e142c38c | 928 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 929 | |
134d01f1 DJ |
930 | static void read_enumeration_type (struct die_info *, struct dwarf2_cu *); |
931 | ||
932 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 933 | |
e7c27a73 | 934 | static struct type *dwarf_base_type (int, int, struct dwarf2_cu *); |
c906108c | 935 | |
e7c27a73 | 936 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 937 | |
e7c27a73 | 938 | static void read_array_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 939 | |
7ca2d3a3 DL |
940 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
941 | struct dwarf2_cu *); | |
942 | ||
e7c27a73 | 943 | static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 944 | |
e7c27a73 DJ |
945 | static void read_tag_ptr_to_member_type (struct die_info *, |
946 | struct dwarf2_cu *); | |
c906108c | 947 | |
e7c27a73 | 948 | static void read_tag_reference_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 949 | |
e7c27a73 | 950 | static void read_tag_const_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 951 | |
e7c27a73 | 952 | static void read_tag_volatile_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 953 | |
e7c27a73 | 954 | static void read_tag_string_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 955 | |
e7c27a73 | 956 | static void read_subroutine_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 957 | |
fe1b8b76 | 958 | static struct die_info *read_comp_unit (gdb_byte *, bfd *, struct dwarf2_cu *); |
c906108c | 959 | |
fe1b8b76 | 960 | static struct die_info *read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 961 | struct dwarf2_cu *, |
fe1b8b76 | 962 | gdb_byte **new_info_ptr, |
639d11d3 DC |
963 | struct die_info *parent); |
964 | ||
fe1b8b76 | 965 | static struct die_info *read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 966 | struct dwarf2_cu *, |
fe1b8b76 | 967 | gdb_byte **new_info_ptr, |
639d11d3 DC |
968 | struct die_info *parent); |
969 | ||
a14ed312 | 970 | static void free_die_list (struct die_info *); |
c906108c | 971 | |
e7c27a73 | 972 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 973 | |
e142c38c | 974 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 975 | |
e142c38c | 976 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 977 | |
e142c38c DJ |
978 | static struct die_info *dwarf2_extension (struct die_info *die, |
979 | struct dwarf2_cu *); | |
9219021c | 980 | |
a14ed312 | 981 | static char *dwarf_tag_name (unsigned int); |
c906108c | 982 | |
a14ed312 | 983 | static char *dwarf_attr_name (unsigned int); |
c906108c | 984 | |
a14ed312 | 985 | static char *dwarf_form_name (unsigned int); |
c906108c | 986 | |
a14ed312 | 987 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 988 | |
a14ed312 | 989 | static char *dwarf_bool_name (unsigned int); |
c906108c | 990 | |
a14ed312 | 991 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
992 | |
993 | #if 0 | |
a14ed312 | 994 | static char *dwarf_cfi_name (unsigned int); |
c906108c | 995 | |
a14ed312 | 996 | struct die_info *copy_die (struct die_info *); |
c906108c SS |
997 | #endif |
998 | ||
f9aca02d | 999 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1000 | |
f9aca02d | 1001 | static void dump_die (struct die_info *); |
c906108c | 1002 | |
f9aca02d | 1003 | static void dump_die_list (struct die_info *); |
c906108c | 1004 | |
10b3939b DJ |
1005 | static void store_in_ref_table (unsigned int, struct die_info *, |
1006 | struct dwarf2_cu *); | |
c906108c | 1007 | |
e142c38c DJ |
1008 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
1009 | struct dwarf2_cu *); | |
c906108c | 1010 | |
a02abb62 JB |
1011 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
1012 | ||
10b3939b DJ |
1013 | static struct die_info *follow_die_ref (struct die_info *, |
1014 | struct attribute *, | |
1015 | struct dwarf2_cu *); | |
c906108c | 1016 | |
e142c38c DJ |
1017 | static struct type *dwarf2_fundamental_type (struct objfile *, int, |
1018 | struct dwarf2_cu *); | |
c906108c SS |
1019 | |
1020 | /* memory allocation interface */ | |
1021 | ||
7b5a2f43 | 1022 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1023 | |
f3dd6933 | 1024 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 1025 | |
a14ed312 | 1026 | static struct die_info *dwarf_alloc_die (void); |
c906108c | 1027 | |
e142c38c | 1028 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 1029 | |
e142c38c DJ |
1030 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
1031 | struct dwarf2_cu *); | |
5fb290d7 | 1032 | |
2e276125 | 1033 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 1034 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 1035 | |
8e19ed76 PS |
1036 | static int attr_form_is_block (struct attribute *); |
1037 | ||
4c2df51b DJ |
1038 | static void |
1039 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 1040 | struct dwarf2_cu *cu); |
4c2df51b | 1041 | |
fe1b8b76 JB |
1042 | static gdb_byte *skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, |
1043 | struct dwarf2_cu *cu); | |
4bb7a0a7 | 1044 | |
72bf9492 DJ |
1045 | static void free_stack_comp_unit (void *); |
1046 | ||
72bf9492 DJ |
1047 | static hashval_t partial_die_hash (const void *item); |
1048 | ||
1049 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1050 | ||
ae038cb0 DJ |
1051 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
1052 | (unsigned long offset, struct objfile *objfile); | |
1053 | ||
1054 | static struct dwarf2_per_cu_data *dwarf2_find_comp_unit | |
1055 | (unsigned long offset, struct objfile *objfile); | |
1056 | ||
1057 | static void free_one_comp_unit (void *); | |
1058 | ||
1059 | static void free_cached_comp_units (void *); | |
1060 | ||
1061 | static void age_cached_comp_units (void); | |
1062 | ||
1063 | static void free_one_cached_comp_unit (void *); | |
1064 | ||
1c379e20 DJ |
1065 | static void set_die_type (struct die_info *, struct type *, |
1066 | struct dwarf2_cu *); | |
1067 | ||
1c379e20 DJ |
1068 | static void reset_die_and_siblings_types (struct die_info *, |
1069 | struct dwarf2_cu *); | |
1c379e20 | 1070 | |
ae038cb0 DJ |
1071 | static void create_all_comp_units (struct objfile *); |
1072 | ||
31ffec48 DJ |
1073 | static struct dwarf2_cu *load_full_comp_unit (struct dwarf2_per_cu_data *, |
1074 | struct objfile *); | |
10b3939b DJ |
1075 | |
1076 | static void process_full_comp_unit (struct dwarf2_per_cu_data *); | |
1077 | ||
1078 | static void dwarf2_add_dependence (struct dwarf2_cu *, | |
1079 | struct dwarf2_per_cu_data *); | |
1080 | ||
ae038cb0 DJ |
1081 | static void dwarf2_mark (struct dwarf2_cu *); |
1082 | ||
1083 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1084 | ||
72019c9c GM |
1085 | static void read_set_type (struct die_info *, struct dwarf2_cu *); |
1086 | ||
1087 | ||
c906108c SS |
1088 | /* Try to locate the sections we need for DWARF 2 debugging |
1089 | information and return true if we have enough to do something. */ | |
1090 | ||
1091 | int | |
6502dd73 | 1092 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 1093 | { |
6502dd73 DJ |
1094 | struct dwarf2_per_objfile *data; |
1095 | ||
1096 | /* Initialize per-objfile state. */ | |
1097 | data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
1098 | memset (data, 0, sizeof (*data)); | |
1099 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
1100 | dwarf2_per_objfile = data; | |
1101 | ||
188dd5d6 DJ |
1102 | dwarf_info_section = 0; |
1103 | dwarf_abbrev_section = 0; | |
1104 | dwarf_line_section = 0; | |
1105 | dwarf_str_section = 0; | |
1106 | dwarf_macinfo_section = 0; | |
1107 | dwarf_frame_section = 0; | |
1108 | dwarf_eh_frame_section = 0; | |
1109 | dwarf_ranges_section = 0; | |
1110 | dwarf_loc_section = 0; | |
af34e669 | 1111 | |
6502dd73 | 1112 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 1113 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
1114 | } |
1115 | ||
1116 | /* This function is mapped across the sections and remembers the | |
1117 | offset and size of each of the debugging sections we are interested | |
1118 | in. */ | |
1119 | ||
1120 | static void | |
72dca2f5 | 1121 | dwarf2_locate_sections (bfd *abfd, asection *sectp, void *ignore_ptr) |
c906108c | 1122 | { |
6314a349 | 1123 | if (strcmp (sectp->name, INFO_SECTION) == 0) |
c906108c | 1124 | { |
2c500098 | 1125 | dwarf2_per_objfile->info_size = bfd_get_section_size (sectp); |
086df311 | 1126 | dwarf_info_section = sectp; |
c906108c | 1127 | } |
6314a349 | 1128 | else if (strcmp (sectp->name, ABBREV_SECTION) == 0) |
c906108c | 1129 | { |
2c500098 | 1130 | dwarf2_per_objfile->abbrev_size = bfd_get_section_size (sectp); |
086df311 | 1131 | dwarf_abbrev_section = sectp; |
c906108c | 1132 | } |
6314a349 | 1133 | else if (strcmp (sectp->name, LINE_SECTION) == 0) |
c906108c | 1134 | { |
2c500098 | 1135 | dwarf2_per_objfile->line_size = bfd_get_section_size (sectp); |
086df311 | 1136 | dwarf_line_section = sectp; |
c906108c | 1137 | } |
6314a349 | 1138 | else if (strcmp (sectp->name, PUBNAMES_SECTION) == 0) |
c906108c | 1139 | { |
2c500098 | 1140 | dwarf2_per_objfile->pubnames_size = bfd_get_section_size (sectp); |
086df311 | 1141 | dwarf_pubnames_section = sectp; |
c906108c | 1142 | } |
6314a349 | 1143 | else if (strcmp (sectp->name, ARANGES_SECTION) == 0) |
c906108c | 1144 | { |
2c500098 | 1145 | dwarf2_per_objfile->aranges_size = bfd_get_section_size (sectp); |
086df311 | 1146 | dwarf_aranges_section = sectp; |
c906108c | 1147 | } |
6314a349 | 1148 | else if (strcmp (sectp->name, LOC_SECTION) == 0) |
c906108c | 1149 | { |
2c500098 | 1150 | dwarf2_per_objfile->loc_size = bfd_get_section_size (sectp); |
086df311 | 1151 | dwarf_loc_section = sectp; |
c906108c | 1152 | } |
6314a349 | 1153 | else if (strcmp (sectp->name, MACINFO_SECTION) == 0) |
c906108c | 1154 | { |
2c500098 | 1155 | dwarf2_per_objfile->macinfo_size = bfd_get_section_size (sectp); |
0cf824c9 | 1156 | dwarf_macinfo_section = sectp; |
c906108c | 1157 | } |
6314a349 | 1158 | else if (strcmp (sectp->name, STR_SECTION) == 0) |
c906108c | 1159 | { |
2c500098 | 1160 | dwarf2_per_objfile->str_size = bfd_get_section_size (sectp); |
086df311 | 1161 | dwarf_str_section = sectp; |
c906108c | 1162 | } |
6314a349 | 1163 | else if (strcmp (sectp->name, FRAME_SECTION) == 0) |
b6af0555 | 1164 | { |
2c500098 | 1165 | dwarf2_per_objfile->frame_size = bfd_get_section_size (sectp); |
086df311 | 1166 | dwarf_frame_section = sectp; |
b6af0555 | 1167 | } |
6314a349 | 1168 | else if (strcmp (sectp->name, EH_FRAME_SECTION) == 0) |
b6af0555 | 1169 | { |
3799ccc6 EZ |
1170 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
1171 | if (aflag & SEC_HAS_CONTENTS) | |
1172 | { | |
2c500098 | 1173 | dwarf2_per_objfile->eh_frame_size = bfd_get_section_size (sectp); |
3799ccc6 EZ |
1174 | dwarf_eh_frame_section = sectp; |
1175 | } | |
b6af0555 | 1176 | } |
6314a349 | 1177 | else if (strcmp (sectp->name, RANGES_SECTION) == 0) |
af34e669 | 1178 | { |
2c500098 | 1179 | dwarf2_per_objfile->ranges_size = bfd_get_section_size (sectp); |
6f10aeb1 | 1180 | dwarf_ranges_section = sectp; |
af34e669 | 1181 | } |
72dca2f5 FR |
1182 | |
1183 | if ((bfd_get_section_flags (abfd, sectp) & SEC_LOAD) | |
1184 | && bfd_section_vma (abfd, sectp) == 0) | |
1185 | dwarf2_per_objfile->has_section_at_zero = 1; | |
c906108c SS |
1186 | } |
1187 | ||
1188 | /* Build a partial symbol table. */ | |
1189 | ||
1190 | void | |
fba45db2 | 1191 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c | 1192 | { |
c906108c SS |
1193 | /* We definitely need the .debug_info and .debug_abbrev sections */ |
1194 | ||
6502dd73 DJ |
1195 | dwarf2_per_objfile->info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
1196 | dwarf2_per_objfile->abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
188dd5d6 DJ |
1197 | |
1198 | if (dwarf_line_section) | |
6502dd73 | 1199 | dwarf2_per_objfile->line_buffer = dwarf2_read_section (objfile, dwarf_line_section); |
41ff2da1 | 1200 | else |
6502dd73 | 1201 | dwarf2_per_objfile->line_buffer = NULL; |
c906108c | 1202 | |
188dd5d6 | 1203 | if (dwarf_str_section) |
6502dd73 | 1204 | dwarf2_per_objfile->str_buffer = dwarf2_read_section (objfile, dwarf_str_section); |
4bdf3d34 | 1205 | else |
6502dd73 | 1206 | dwarf2_per_objfile->str_buffer = NULL; |
4bdf3d34 | 1207 | |
188dd5d6 | 1208 | if (dwarf_macinfo_section) |
6502dd73 | 1209 | dwarf2_per_objfile->macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1210 | dwarf_macinfo_section); |
2e276125 | 1211 | else |
6502dd73 | 1212 | dwarf2_per_objfile->macinfo_buffer = NULL; |
2e276125 | 1213 | |
188dd5d6 | 1214 | if (dwarf_ranges_section) |
6502dd73 | 1215 | dwarf2_per_objfile->ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); |
af34e669 | 1216 | else |
6502dd73 | 1217 | dwarf2_per_objfile->ranges_buffer = NULL; |
af34e669 | 1218 | |
188dd5d6 | 1219 | if (dwarf_loc_section) |
6502dd73 | 1220 | dwarf2_per_objfile->loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); |
0d53c4c4 | 1221 | else |
6502dd73 | 1222 | dwarf2_per_objfile->loc_buffer = NULL; |
0d53c4c4 | 1223 | |
ef96bde8 EZ |
1224 | if (mainline |
1225 | || (objfile->global_psymbols.size == 0 | |
1226 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1227 | { |
1228 | init_psymbol_list (objfile, 1024); | |
1229 | } | |
1230 | ||
1231 | #if 0 | |
1232 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1233 | { | |
d4f3574e | 1234 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1235 | .debug_pubnames sections */ |
1236 | ||
d4f3574e | 1237 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1238 | } |
1239 | else | |
1240 | #endif | |
1241 | /* only test this case for now */ | |
c5aa993b | 1242 | { |
c906108c | 1243 | /* In this case we have to work a bit harder */ |
d4f3574e | 1244 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1245 | } |
1246 | } | |
1247 | ||
1248 | #if 0 | |
1249 | /* Build the partial symbol table from the information in the | |
1250 | .debug_pubnames and .debug_aranges sections. */ | |
1251 | ||
1252 | static void | |
fba45db2 | 1253 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1254 | { |
1255 | bfd *abfd = objfile->obfd; | |
1256 | char *aranges_buffer, *pubnames_buffer; | |
1257 | char *aranges_ptr, *pubnames_ptr; | |
1258 | unsigned int entry_length, version, info_offset, info_size; | |
1259 | ||
1260 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1261 | dwarf_pubnames_section); |
c906108c | 1262 | pubnames_ptr = pubnames_buffer; |
6502dd73 | 1263 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames_size) |
c906108c | 1264 | { |
613e1657 | 1265 | struct comp_unit_head cu_header; |
891d2f0b | 1266 | unsigned int bytes_read; |
613e1657 KB |
1267 | |
1268 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
891d2f0b | 1269 | &bytes_read); |
613e1657 | 1270 | pubnames_ptr += bytes_read; |
c906108c SS |
1271 | version = read_1_byte (abfd, pubnames_ptr); |
1272 | pubnames_ptr += 1; | |
1273 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1274 | pubnames_ptr += 4; | |
1275 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1276 | pubnames_ptr += 4; | |
1277 | } | |
1278 | ||
1279 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1280 | dwarf_aranges_section); |
c906108c SS |
1281 | |
1282 | } | |
1283 | #endif | |
1284 | ||
107d2387 | 1285 | /* Read in the comp unit header information from the debug_info at |
917c78fc | 1286 | info_ptr. */ |
107d2387 | 1287 | |
fe1b8b76 | 1288 | static gdb_byte * |
107d2387 | 1289 | read_comp_unit_head (struct comp_unit_head *cu_header, |
fe1b8b76 | 1290 | gdb_byte *info_ptr, bfd *abfd) |
107d2387 AC |
1291 | { |
1292 | int signed_addr; | |
891d2f0b | 1293 | unsigned int bytes_read; |
613e1657 KB |
1294 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, |
1295 | &bytes_read); | |
1296 | info_ptr += bytes_read; | |
107d2387 AC |
1297 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1298 | info_ptr += 2; | |
613e1657 KB |
1299 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1300 | &bytes_read); | |
1301 | info_ptr += bytes_read; | |
107d2387 AC |
1302 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1303 | info_ptr += 1; | |
1304 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1305 | if (signed_addr < 0) | |
8e65ff28 | 1306 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 1307 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 AC |
1308 | cu_header->signed_addr_p = signed_addr; |
1309 | return info_ptr; | |
1310 | } | |
1311 | ||
fe1b8b76 JB |
1312 | static gdb_byte * |
1313 | partial_read_comp_unit_head (struct comp_unit_head *header, gdb_byte *info_ptr, | |
72bf9492 DJ |
1314 | bfd *abfd) |
1315 | { | |
fe1b8b76 | 1316 | gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 DJ |
1317 | |
1318 | info_ptr = read_comp_unit_head (header, info_ptr, abfd); | |
1319 | ||
2b949cb6 | 1320 | if (header->version != 2 && header->version != 3) |
8a3fe4f8 AC |
1321 | error (_("Dwarf Error: wrong version in compilation unit header " |
1322 | "(is %d, should be %d) [in module %s]"), header->version, | |
72bf9492 DJ |
1323 | 2, bfd_get_filename (abfd)); |
1324 | ||
1325 | if (header->abbrev_offset >= dwarf2_per_objfile->abbrev_size) | |
8a3fe4f8 AC |
1326 | error (_("Dwarf Error: bad offset (0x%lx) in compilation unit header " |
1327 | "(offset 0x%lx + 6) [in module %s]"), | |
72bf9492 DJ |
1328 | (long) header->abbrev_offset, |
1329 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1330 | bfd_get_filename (abfd)); | |
1331 | ||
1332 | if (beg_of_comp_unit + header->length + header->initial_length_size | |
1333 | > dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
8a3fe4f8 AC |
1334 | error (_("Dwarf Error: bad length (0x%lx) in compilation unit header " |
1335 | "(offset 0x%lx + 0) [in module %s]"), | |
72bf9492 DJ |
1336 | (long) header->length, |
1337 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), | |
1338 | bfd_get_filename (abfd)); | |
1339 | ||
1340 | return info_ptr; | |
1341 | } | |
1342 | ||
aaa75496 JB |
1343 | /* Allocate a new partial symtab for file named NAME and mark this new |
1344 | partial symtab as being an include of PST. */ | |
1345 | ||
1346 | static void | |
1347 | dwarf2_create_include_psymtab (char *name, struct partial_symtab *pst, | |
1348 | struct objfile *objfile) | |
1349 | { | |
1350 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
1351 | ||
1352 | subpst->section_offsets = pst->section_offsets; | |
1353 | subpst->textlow = 0; | |
1354 | subpst->texthigh = 0; | |
1355 | ||
1356 | subpst->dependencies = (struct partial_symtab **) | |
1357 | obstack_alloc (&objfile->objfile_obstack, | |
1358 | sizeof (struct partial_symtab *)); | |
1359 | subpst->dependencies[0] = pst; | |
1360 | subpst->number_of_dependencies = 1; | |
1361 | ||
1362 | subpst->globals_offset = 0; | |
1363 | subpst->n_global_syms = 0; | |
1364 | subpst->statics_offset = 0; | |
1365 | subpst->n_static_syms = 0; | |
1366 | subpst->symtab = NULL; | |
1367 | subpst->read_symtab = pst->read_symtab; | |
1368 | subpst->readin = 0; | |
1369 | ||
1370 | /* No private part is necessary for include psymtabs. This property | |
1371 | can be used to differentiate between such include psymtabs and | |
10b3939b | 1372 | the regular ones. */ |
58a9656e | 1373 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
1374 | } |
1375 | ||
1376 | /* Read the Line Number Program data and extract the list of files | |
1377 | included by the source file represented by PST. Build an include | |
1378 | partial symtab for each of these included files. | |
1379 | ||
1380 | This procedure assumes that there *is* a Line Number Program in | |
1381 | the given CU. Callers should check that PDI->HAS_STMT_LIST is set | |
1382 | before calling this procedure. */ | |
1383 | ||
1384 | static void | |
1385 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
1386 | struct partial_die_info *pdi, | |
1387 | struct partial_symtab *pst) | |
1388 | { | |
1389 | struct objfile *objfile = cu->objfile; | |
1390 | bfd *abfd = objfile->obfd; | |
1391 | struct line_header *lh; | |
1392 | ||
1393 | lh = dwarf_decode_line_header (pdi->line_offset, abfd, cu); | |
1394 | if (lh == NULL) | |
1395 | return; /* No linetable, so no includes. */ | |
1396 | ||
1397 | dwarf_decode_lines (lh, NULL, abfd, cu, pst); | |
1398 | ||
1399 | free_line_header (lh); | |
1400 | } | |
1401 | ||
1402 | ||
c906108c SS |
1403 | /* Build the partial symbol table by doing a quick pass through the |
1404 | .debug_info and .debug_abbrev sections. */ | |
1405 | ||
1406 | static void | |
fba45db2 | 1407 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1408 | { |
1409 | /* Instead of reading this into a big buffer, we should probably use | |
1410 | mmap() on architectures that support it. (FIXME) */ | |
1411 | bfd *abfd = objfile->obfd; | |
fe1b8b76 JB |
1412 | gdb_byte *info_ptr; |
1413 | gdb_byte *beg_of_comp_unit; | |
c906108c SS |
1414 | struct partial_die_info comp_unit_die; |
1415 | struct partial_symtab *pst; | |
ae038cb0 | 1416 | struct cleanup *back_to; |
e142c38c | 1417 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1418 | |
6502dd73 | 1419 | info_ptr = dwarf2_per_objfile->info_buffer; |
c906108c | 1420 | |
ae038cb0 DJ |
1421 | /* Any cached compilation units will be linked by the per-objfile |
1422 | read_in_chain. Make sure to free them when we're done. */ | |
1423 | back_to = make_cleanup (free_cached_comp_units, NULL); | |
1424 | ||
10b3939b DJ |
1425 | create_all_comp_units (objfile); |
1426 | ||
6502dd73 | 1427 | /* Since the objects we're extracting from .debug_info vary in |
af703f96 | 1428 | length, only the individual functions to extract them (like |
72bf9492 | 1429 | read_comp_unit_head and load_partial_die) can really know whether |
af703f96 JB |
1430 | the buffer is large enough to hold another complete object. |
1431 | ||
6502dd73 DJ |
1432 | At the moment, they don't actually check that. If .debug_info |
1433 | holds just one extra byte after the last compilation unit's dies, | |
1434 | then read_comp_unit_head will happily read off the end of the | |
1435 | buffer. read_partial_die is similarly casual. Those functions | |
1436 | should be fixed. | |
af703f96 JB |
1437 | |
1438 | For this loop condition, simply checking whether there's any data | |
1439 | left at all should be sufficient. */ | |
6502dd73 DJ |
1440 | while (info_ptr < (dwarf2_per_objfile->info_buffer |
1441 | + dwarf2_per_objfile->info_size)) | |
c906108c | 1442 | { |
f3dd6933 | 1443 | struct cleanup *back_to_inner; |
e7c27a73 | 1444 | struct dwarf2_cu cu; |
72bf9492 DJ |
1445 | struct abbrev_info *abbrev; |
1446 | unsigned int bytes_read; | |
1447 | struct dwarf2_per_cu_data *this_cu; | |
1448 | ||
c906108c | 1449 | beg_of_comp_unit = info_ptr; |
c906108c | 1450 | |
72bf9492 DJ |
1451 | memset (&cu, 0, sizeof (cu)); |
1452 | ||
1453 | obstack_init (&cu.comp_unit_obstack); | |
1454 | ||
1455 | back_to_inner = make_cleanup (free_stack_comp_unit, &cu); | |
1456 | ||
e7c27a73 | 1457 | cu.objfile = objfile; |
72bf9492 | 1458 | info_ptr = partial_read_comp_unit_head (&cu.header, info_ptr, abfd); |
e7c27a73 | 1459 | |
57349743 | 1460 | /* Complete the cu_header */ |
6502dd73 | 1461 | cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
e7c27a73 DJ |
1462 | cu.header.first_die_ptr = info_ptr; |
1463 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1464 | |
e142c38c DJ |
1465 | cu.list_in_scope = &file_symbols; |
1466 | ||
c906108c | 1467 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1468 | dwarf2_read_abbrevs (abfd, &cu); |
72bf9492 | 1469 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1470 | |
10b3939b | 1471 | this_cu = dwarf2_find_comp_unit (cu.header.offset, objfile); |
ae038cb0 | 1472 | |
c906108c | 1473 | /* Read the compilation unit die */ |
72bf9492 DJ |
1474 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, &cu); |
1475 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1476 | abfd, info_ptr, &cu); | |
c906108c | 1477 | |
31ffec48 DJ |
1478 | if (comp_unit_die.tag == DW_TAG_partial_unit) |
1479 | { | |
1480 | info_ptr = (beg_of_comp_unit + cu.header.length | |
1481 | + cu.header.initial_length_size); | |
1482 | do_cleanups (back_to_inner); | |
1483 | continue; | |
1484 | } | |
1485 | ||
c906108c | 1486 | /* Set the language we're debugging */ |
e142c38c | 1487 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1488 | |
1489 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1490 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1491 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1492 | comp_unit_die.lowpc, |
1493 | objfile->global_psymbols.next, | |
1494 | objfile->static_psymbols.next); | |
1495 | ||
ae038cb0 DJ |
1496 | if (comp_unit_die.dirname) |
1497 | pst->dirname = xstrdup (comp_unit_die.dirname); | |
57c22c6c | 1498 | |
10b3939b DJ |
1499 | pst->read_symtab_private = (char *) this_cu; |
1500 | ||
613e1657 | 1501 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1502 | |
1503 | /* Store the function that reads in the rest of the symbol table */ | |
1504 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1505 | ||
10b3939b DJ |
1506 | /* If this compilation unit was already read in, free the |
1507 | cached copy in order to read it in again. This is | |
1508 | necessary because we skipped some symbols when we first | |
1509 | read in the compilation unit (see load_partial_dies). | |
1510 | This problem could be avoided, but the benefit is | |
1511 | unclear. */ | |
1512 | if (this_cu->cu != NULL) | |
1513 | free_one_cached_comp_unit (this_cu->cu); | |
ae038cb0 | 1514 | |
10b3939b | 1515 | cu.per_cu = this_cu; |
ae038cb0 | 1516 | |
10b3939b DJ |
1517 | /* Note that this is a pointer to our stack frame, being |
1518 | added to a global data structure. It will be cleaned up | |
1519 | in free_stack_comp_unit when we finish with this | |
1520 | compilation unit. */ | |
1521 | this_cu->cu = &cu; | |
ae038cb0 | 1522 | |
10b3939b | 1523 | this_cu->psymtab = pst; |
ae038cb0 | 1524 | |
c906108c SS |
1525 | /* Check if comp unit has_children. |
1526 | If so, read the rest of the partial symbols from this comp unit. | |
1527 | If not, there's no more debug_info for this comp unit. */ | |
1528 | if (comp_unit_die.has_children) | |
1529 | { | |
72bf9492 DJ |
1530 | struct partial_die_info *first_die; |
1531 | ||
91c24f0a DC |
1532 | lowpc = ((CORE_ADDR) -1); |
1533 | highpc = ((CORE_ADDR) 0); | |
1534 | ||
72bf9492 DJ |
1535 | first_die = load_partial_dies (abfd, info_ptr, 1, &cu); |
1536 | ||
1537 | scan_partial_symbols (first_die, &lowpc, &highpc, &cu); | |
c906108c | 1538 | |
91c24f0a DC |
1539 | /* If we didn't find a lowpc, set it to highpc to avoid |
1540 | complaints from `maint check'. */ | |
1541 | if (lowpc == ((CORE_ADDR) -1)) | |
1542 | lowpc = highpc; | |
72bf9492 | 1543 | |
c906108c SS |
1544 | /* If the compilation unit didn't have an explicit address range, |
1545 | then use the information extracted from its child dies. */ | |
0b010bcc | 1546 | if (! comp_unit_die.has_pc_info) |
c906108c | 1547 | { |
c5aa993b | 1548 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1549 | comp_unit_die.highpc = highpc; |
1550 | } | |
1551 | } | |
c5aa993b | 1552 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1553 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1554 | ||
1555 | pst->n_global_syms = objfile->global_psymbols.next - | |
1556 | (objfile->global_psymbols.list + pst->globals_offset); | |
1557 | pst->n_static_syms = objfile->static_psymbols.next - | |
1558 | (objfile->static_psymbols.list + pst->statics_offset); | |
1559 | sort_pst_symbols (pst); | |
1560 | ||
1561 | /* If there is already a psymtab or symtab for a file of this | |
1562 | name, remove it. (If there is a symtab, more drastic things | |
1563 | also happen.) This happens in VxWorks. */ | |
1564 | free_named_symtabs (pst->filename); | |
1565 | ||
dd373385 EZ |
1566 | info_ptr = beg_of_comp_unit + cu.header.length |
1567 | + cu.header.initial_length_size; | |
1568 | ||
aaa75496 JB |
1569 | if (comp_unit_die.has_stmt_list) |
1570 | { | |
1571 | /* Get the list of files included in the current compilation unit, | |
1572 | and build a psymtab for each of them. */ | |
1573 | dwarf2_build_include_psymtabs (&cu, &comp_unit_die, pst); | |
1574 | } | |
1575 | ||
f3dd6933 | 1576 | do_cleanups (back_to_inner); |
c906108c | 1577 | } |
ae038cb0 DJ |
1578 | do_cleanups (back_to); |
1579 | } | |
1580 | ||
1581 | /* Load the DIEs for a secondary CU into memory. */ | |
1582 | ||
1583 | static void | |
1584 | load_comp_unit (struct dwarf2_per_cu_data *this_cu, struct objfile *objfile) | |
1585 | { | |
1586 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 1587 | gdb_byte *info_ptr, *beg_of_comp_unit; |
ae038cb0 DJ |
1588 | struct partial_die_info comp_unit_die; |
1589 | struct dwarf2_cu *cu; | |
1590 | struct abbrev_info *abbrev; | |
1591 | unsigned int bytes_read; | |
1592 | struct cleanup *back_to; | |
1593 | ||
1594 | info_ptr = dwarf2_per_objfile->info_buffer + this_cu->offset; | |
1595 | beg_of_comp_unit = info_ptr; | |
1596 | ||
1597 | cu = xmalloc (sizeof (struct dwarf2_cu)); | |
1598 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
1599 | ||
1600 | obstack_init (&cu->comp_unit_obstack); | |
1601 | ||
1602 | cu->objfile = objfile; | |
1603 | info_ptr = partial_read_comp_unit_head (&cu->header, info_ptr, abfd); | |
1604 | ||
1605 | /* Complete the cu_header. */ | |
1606 | cu->header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; | |
1607 | cu->header.first_die_ptr = info_ptr; | |
1608 | cu->header.cu_head_ptr = beg_of_comp_unit; | |
1609 | ||
1610 | /* Read the abbrevs for this compilation unit into a table. */ | |
1611 | dwarf2_read_abbrevs (abfd, cu); | |
1612 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
1613 | ||
1614 | /* Read the compilation unit die. */ | |
1615 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1616 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
1617 | abfd, info_ptr, cu); | |
1618 | ||
1619 | /* Set the language we're debugging. */ | |
1620 | set_cu_language (comp_unit_die.language, cu); | |
1621 | ||
1622 | /* Link this compilation unit into the compilation unit tree. */ | |
1623 | this_cu->cu = cu; | |
1624 | cu->per_cu = this_cu; | |
1625 | ||
1626 | /* Check if comp unit has_children. | |
1627 | If so, read the rest of the partial symbols from this comp unit. | |
1628 | If not, there's no more debug_info for this comp unit. */ | |
1629 | if (comp_unit_die.has_children) | |
1630 | load_partial_dies (abfd, info_ptr, 0, cu); | |
1631 | ||
1632 | do_cleanups (back_to); | |
1633 | } | |
1634 | ||
1635 | /* Create a list of all compilation units in OBJFILE. We do this only | |
1636 | if an inter-comp-unit reference is found; presumably if there is one, | |
1637 | there will be many, and one will occur early in the .debug_info section. | |
1638 | So there's no point in building this list incrementally. */ | |
1639 | ||
1640 | static void | |
1641 | create_all_comp_units (struct objfile *objfile) | |
1642 | { | |
1643 | int n_allocated; | |
1644 | int n_comp_units; | |
1645 | struct dwarf2_per_cu_data **all_comp_units; | |
fe1b8b76 | 1646 | gdb_byte *info_ptr = dwarf2_per_objfile->info_buffer; |
ae038cb0 DJ |
1647 | |
1648 | n_comp_units = 0; | |
1649 | n_allocated = 10; | |
1650 | all_comp_units = xmalloc (n_allocated | |
1651 | * sizeof (struct dwarf2_per_cu_data *)); | |
1652 | ||
1653 | while (info_ptr < dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) | |
1654 | { | |
1655 | struct comp_unit_head cu_header; | |
fe1b8b76 | 1656 | gdb_byte *beg_of_comp_unit; |
ae038cb0 DJ |
1657 | struct dwarf2_per_cu_data *this_cu; |
1658 | unsigned long offset; | |
891d2f0b | 1659 | unsigned int bytes_read; |
ae038cb0 DJ |
1660 | |
1661 | offset = info_ptr - dwarf2_per_objfile->info_buffer; | |
1662 | ||
1663 | /* Read just enough information to find out where the next | |
1664 | compilation unit is. */ | |
dd373385 | 1665 | cu_header.initial_length_size = 0; |
ae038cb0 DJ |
1666 | cu_header.length = read_initial_length (objfile->obfd, info_ptr, |
1667 | &cu_header, &bytes_read); | |
1668 | ||
1669 | /* Save the compilation unit for later lookup. */ | |
1670 | this_cu = obstack_alloc (&objfile->objfile_obstack, | |
1671 | sizeof (struct dwarf2_per_cu_data)); | |
1672 | memset (this_cu, 0, sizeof (*this_cu)); | |
1673 | this_cu->offset = offset; | |
1674 | this_cu->length = cu_header.length + cu_header.initial_length_size; | |
1675 | ||
1676 | if (n_comp_units == n_allocated) | |
1677 | { | |
1678 | n_allocated *= 2; | |
1679 | all_comp_units = xrealloc (all_comp_units, | |
1680 | n_allocated | |
1681 | * sizeof (struct dwarf2_per_cu_data *)); | |
1682 | } | |
1683 | all_comp_units[n_comp_units++] = this_cu; | |
1684 | ||
1685 | info_ptr = info_ptr + this_cu->length; | |
1686 | } | |
1687 | ||
1688 | dwarf2_per_objfile->all_comp_units | |
1689 | = obstack_alloc (&objfile->objfile_obstack, | |
1690 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1691 | memcpy (dwarf2_per_objfile->all_comp_units, all_comp_units, | |
1692 | n_comp_units * sizeof (struct dwarf2_per_cu_data *)); | |
1693 | xfree (all_comp_units); | |
1694 | dwarf2_per_objfile->n_comp_units = n_comp_units; | |
c906108c SS |
1695 | } |
1696 | ||
72bf9492 DJ |
1697 | /* Process all loaded DIEs for compilation unit CU, starting at FIRST_DIE. |
1698 | Also set *LOWPC and *HIGHPC to the lowest and highest PC values found | |
1699 | in CU. */ | |
c906108c | 1700 | |
72bf9492 DJ |
1701 | static void |
1702 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
1703 | CORE_ADDR *highpc, struct dwarf2_cu *cu) | |
c906108c | 1704 | { |
e7c27a73 | 1705 | struct objfile *objfile = cu->objfile; |
c906108c | 1706 | bfd *abfd = objfile->obfd; |
72bf9492 | 1707 | struct partial_die_info *pdi; |
c906108c | 1708 | |
91c24f0a DC |
1709 | /* Now, march along the PDI's, descending into ones which have |
1710 | interesting children but skipping the children of the other ones, | |
1711 | until we reach the end of the compilation unit. */ | |
c906108c | 1712 | |
72bf9492 | 1713 | pdi = first_die; |
91c24f0a | 1714 | |
72bf9492 DJ |
1715 | while (pdi != NULL) |
1716 | { | |
1717 | fixup_partial_die (pdi, cu); | |
c906108c | 1718 | |
91c24f0a DC |
1719 | /* Anonymous namespaces have no name but have interesting |
1720 | children, so we need to look at them. Ditto for anonymous | |
1721 | enums. */ | |
933c6fe4 | 1722 | |
72bf9492 DJ |
1723 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
1724 | || pdi->tag == DW_TAG_enumeration_type) | |
c906108c | 1725 | { |
72bf9492 | 1726 | switch (pdi->tag) |
c906108c SS |
1727 | { |
1728 | case DW_TAG_subprogram: | |
72bf9492 | 1729 | if (pdi->has_pc_info) |
c906108c | 1730 | { |
72bf9492 | 1731 | if (pdi->lowpc < *lowpc) |
c906108c | 1732 | { |
72bf9492 | 1733 | *lowpc = pdi->lowpc; |
c906108c | 1734 | } |
72bf9492 | 1735 | if (pdi->highpc > *highpc) |
c906108c | 1736 | { |
72bf9492 | 1737 | *highpc = pdi->highpc; |
c906108c | 1738 | } |
72bf9492 | 1739 | if (!pdi->is_declaration) |
c906108c | 1740 | { |
72bf9492 | 1741 | add_partial_symbol (pdi, cu); |
c906108c SS |
1742 | } |
1743 | } | |
1744 | break; | |
1745 | case DW_TAG_variable: | |
1746 | case DW_TAG_typedef: | |
91c24f0a | 1747 | case DW_TAG_union_type: |
72bf9492 | 1748 | if (!pdi->is_declaration) |
63d06c5c | 1749 | { |
72bf9492 | 1750 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
1751 | } |
1752 | break; | |
c906108c SS |
1753 | case DW_TAG_class_type: |
1754 | case DW_TAG_structure_type: | |
72bf9492 | 1755 | if (!pdi->is_declaration) |
c906108c | 1756 | { |
72bf9492 | 1757 | add_partial_symbol (pdi, cu); |
c906108c SS |
1758 | } |
1759 | break; | |
91c24f0a | 1760 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
1761 | if (!pdi->is_declaration) |
1762 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
1763 | break; |
1764 | case DW_TAG_base_type: | |
a02abb62 | 1765 | case DW_TAG_subrange_type: |
c906108c | 1766 | /* File scope base type definitions are added to the partial |
c5aa993b | 1767 | symbol table. */ |
72bf9492 | 1768 | add_partial_symbol (pdi, cu); |
c906108c | 1769 | break; |
d9fa45fe | 1770 | case DW_TAG_namespace: |
72bf9492 | 1771 | add_partial_namespace (pdi, lowpc, highpc, cu); |
91c24f0a | 1772 | break; |
c906108c SS |
1773 | default: |
1774 | break; | |
1775 | } | |
1776 | } | |
1777 | ||
72bf9492 DJ |
1778 | /* If the die has a sibling, skip to the sibling. */ |
1779 | ||
1780 | pdi = pdi->die_sibling; | |
1781 | } | |
1782 | } | |
1783 | ||
1784 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 1785 | |
72bf9492 | 1786 | Normally, this is simple. For C++, the parent DIE's fully scoped |
987504bb JJ |
1787 | name is concatenated with "::" and the partial DIE's name. For |
1788 | Java, the same thing occurs except that "." is used instead of "::". | |
72bf9492 DJ |
1789 | Enumerators are an exception; they use the scope of their parent |
1790 | enumeration type, i.e. the name of the enumeration type is not | |
1791 | prepended to the enumerator. | |
91c24f0a | 1792 | |
72bf9492 DJ |
1793 | There are two complexities. One is DW_AT_specification; in this |
1794 | case "parent" means the parent of the target of the specification, | |
1795 | instead of the direct parent of the DIE. The other is compilers | |
1796 | which do not emit DW_TAG_namespace; in this case we try to guess | |
1797 | the fully qualified name of structure types from their members' | |
1798 | linkage names. This must be done using the DIE's children rather | |
1799 | than the children of any DW_AT_specification target. We only need | |
1800 | to do this for structures at the top level, i.e. if the target of | |
1801 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
1802 | have a parent. */ | |
1803 | ||
1804 | /* Compute the scope prefix associated with PDI's parent, in | |
1805 | compilation unit CU. The result will be allocated on CU's | |
1806 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
1807 | field. NULL is returned if no prefix is necessary. */ | |
1808 | static char * | |
1809 | partial_die_parent_scope (struct partial_die_info *pdi, | |
1810 | struct dwarf2_cu *cu) | |
1811 | { | |
1812 | char *grandparent_scope; | |
1813 | struct partial_die_info *parent, *real_pdi; | |
91c24f0a | 1814 | |
72bf9492 DJ |
1815 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
1816 | then this means the parent of the specification DIE. */ | |
1817 | ||
1818 | real_pdi = pdi; | |
72bf9492 | 1819 | while (real_pdi->has_specification) |
10b3939b | 1820 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
72bf9492 DJ |
1821 | |
1822 | parent = real_pdi->die_parent; | |
1823 | if (parent == NULL) | |
1824 | return NULL; | |
1825 | ||
1826 | if (parent->scope_set) | |
1827 | return parent->scope; | |
1828 | ||
1829 | fixup_partial_die (parent, cu); | |
1830 | ||
10b3939b | 1831 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 DJ |
1832 | |
1833 | if (parent->tag == DW_TAG_namespace | |
1834 | || parent->tag == DW_TAG_structure_type | |
1835 | || parent->tag == DW_TAG_class_type | |
1836 | || parent->tag == DW_TAG_union_type) | |
1837 | { | |
1838 | if (grandparent_scope == NULL) | |
1839 | parent->scope = parent->name; | |
1840 | else | |
987504bb JJ |
1841 | parent->scope = typename_concat (&cu->comp_unit_obstack, grandparent_scope, |
1842 | parent->name, cu); | |
72bf9492 DJ |
1843 | } |
1844 | else if (parent->tag == DW_TAG_enumeration_type) | |
1845 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
1846 | parent->scope = grandparent_scope; | |
1847 | else | |
1848 | { | |
1849 | /* FIXME drow/2004-04-01: What should we be doing with | |
1850 | function-local names? For partial symbols, we should probably be | |
1851 | ignoring them. */ | |
1852 | complaint (&symfile_complaints, | |
e2e0b3e5 | 1853 | _("unhandled containing DIE tag %d for DIE at %d"), |
72bf9492 DJ |
1854 | parent->tag, pdi->offset); |
1855 | parent->scope = grandparent_scope; | |
c906108c SS |
1856 | } |
1857 | ||
72bf9492 DJ |
1858 | parent->scope_set = 1; |
1859 | return parent->scope; | |
1860 | } | |
1861 | ||
1862 | /* Return the fully scoped name associated with PDI, from compilation unit | |
1863 | CU. The result will be allocated with malloc. */ | |
1864 | static char * | |
1865 | partial_die_full_name (struct partial_die_info *pdi, | |
1866 | struct dwarf2_cu *cu) | |
1867 | { | |
1868 | char *parent_scope; | |
1869 | ||
1870 | parent_scope = partial_die_parent_scope (pdi, cu); | |
1871 | if (parent_scope == NULL) | |
1872 | return NULL; | |
1873 | else | |
987504bb | 1874 | return typename_concat (NULL, parent_scope, pdi->name, cu); |
c906108c SS |
1875 | } |
1876 | ||
1877 | static void | |
72bf9492 | 1878 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 1879 | { |
e7c27a73 | 1880 | struct objfile *objfile = cu->objfile; |
c906108c | 1881 | CORE_ADDR addr = 0; |
72bf9492 DJ |
1882 | char *actual_name; |
1883 | const char *my_prefix; | |
5c4e30ca | 1884 | const struct partial_symbol *psym = NULL; |
e142c38c | 1885 | CORE_ADDR baseaddr; |
72bf9492 | 1886 | int built_actual_name = 0; |
e142c38c DJ |
1887 | |
1888 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1889 | |
72bf9492 DJ |
1890 | actual_name = NULL; |
1891 | ||
1892 | if (pdi_needs_namespace (pdi->tag)) | |
63d06c5c | 1893 | { |
72bf9492 DJ |
1894 | actual_name = partial_die_full_name (pdi, cu); |
1895 | if (actual_name) | |
1896 | built_actual_name = 1; | |
63d06c5c DC |
1897 | } |
1898 | ||
72bf9492 DJ |
1899 | if (actual_name == NULL) |
1900 | actual_name = pdi->name; | |
1901 | ||
c906108c SS |
1902 | switch (pdi->tag) |
1903 | { | |
1904 | case DW_TAG_subprogram: | |
1905 | if (pdi->is_external) | |
1906 | { | |
38d518c9 | 1907 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1908 | mst_text, objfile); */ |
38d518c9 | 1909 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1910 | VAR_DOMAIN, LOC_BLOCK, |
1911 | &objfile->global_psymbols, | |
1912 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1913 | cu->language, objfile); |
c906108c SS |
1914 | } |
1915 | else | |
1916 | { | |
38d518c9 | 1917 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1918 | mst_file_text, objfile); */ |
38d518c9 | 1919 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1920 | VAR_DOMAIN, LOC_BLOCK, |
1921 | &objfile->static_psymbols, | |
1922 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1923 | cu->language, objfile); |
c906108c SS |
1924 | } |
1925 | break; | |
1926 | case DW_TAG_variable: | |
1927 | if (pdi->is_external) | |
1928 | { | |
1929 | /* Global Variable. | |
1930 | Don't enter into the minimal symbol tables as there is | |
1931 | a minimal symbol table entry from the ELF symbols already. | |
1932 | Enter into partial symbol table if it has a location | |
1933 | descriptor or a type. | |
1934 | If the location descriptor is missing, new_symbol will create | |
1935 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1936 | be determined from the minimal symbol table whenever the variable | |
1937 | is referenced. | |
1938 | The address for the partial symbol table entry is not | |
1939 | used by GDB, but it comes in handy for debugging partial symbol | |
1940 | table building. */ | |
1941 | ||
1942 | if (pdi->locdesc) | |
e7c27a73 | 1943 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1944 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1945 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1946 | VAR_DOMAIN, LOC_STATIC, |
1947 | &objfile->global_psymbols, | |
1948 | 0, addr + baseaddr, | |
e142c38c | 1949 | cu->language, objfile); |
c906108c SS |
1950 | } |
1951 | else | |
1952 | { | |
1953 | /* Static Variable. Skip symbols without location descriptors. */ | |
1954 | if (pdi->locdesc == NULL) | |
1955 | return; | |
e7c27a73 | 1956 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 1957 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 1958 | mst_file_data, objfile); */ |
38d518c9 | 1959 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1960 | VAR_DOMAIN, LOC_STATIC, |
1961 | &objfile->static_psymbols, | |
1962 | 0, addr + baseaddr, | |
e142c38c | 1963 | cu->language, objfile); |
c906108c SS |
1964 | } |
1965 | break; | |
1966 | case DW_TAG_typedef: | |
1967 | case DW_TAG_base_type: | |
a02abb62 | 1968 | case DW_TAG_subrange_type: |
38d518c9 | 1969 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1970 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 1971 | &objfile->static_psymbols, |
e142c38c | 1972 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1973 | break; |
72bf9492 DJ |
1974 | case DW_TAG_namespace: |
1975 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
1976 | VAR_DOMAIN, LOC_TYPEDEF, | |
1977 | &objfile->global_psymbols, | |
1978 | 0, (CORE_ADDR) 0, cu->language, objfile); | |
1979 | break; | |
c906108c SS |
1980 | case DW_TAG_class_type: |
1981 | case DW_TAG_structure_type: | |
1982 | case DW_TAG_union_type: | |
1983 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
1984 | /* Skip external references. The DWARF standard says in the section |
1985 | about "Structure, Union, and Class Type Entries": "An incomplete | |
1986 | structure, union or class type is represented by a structure, | |
1987 | union or class entry that does not have a byte size attribute | |
1988 | and that has a DW_AT_declaration attribute." */ | |
1989 | if (!pdi->has_byte_size && pdi->is_declaration) | |
1990 | return; | |
1991 | ||
63d06c5c DC |
1992 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
1993 | static vs. global. */ | |
38d518c9 | 1994 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1995 | STRUCT_DOMAIN, LOC_TYPEDEF, |
987504bb JJ |
1996 | (cu->language == language_cplus |
1997 | || cu->language == language_java) | |
63d06c5c DC |
1998 | ? &objfile->global_psymbols |
1999 | : &objfile->static_psymbols, | |
e142c38c | 2000 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 2001 | |
987504bb JJ |
2002 | if (cu->language == language_cplus |
2003 | || cu->language == language_java) | |
c906108c | 2004 | { |
987504bb | 2005 | /* For C++ and Java, these implicitly act as typedefs as well. */ |
38d518c9 | 2006 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2007 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 2008 | &objfile->global_psymbols, |
e142c38c | 2009 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2010 | } |
2011 | break; | |
2012 | case DW_TAG_enumerator: | |
38d518c9 | 2013 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 2014 | VAR_DOMAIN, LOC_CONST, |
987504bb JJ |
2015 | (cu->language == language_cplus |
2016 | || cu->language == language_java) | |
f6fe98ef DJ |
2017 | ? &objfile->global_psymbols |
2018 | : &objfile->static_psymbols, | |
e142c38c | 2019 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
2020 | break; |
2021 | default: | |
2022 | break; | |
2023 | } | |
5c4e30ca DC |
2024 | |
2025 | /* Check to see if we should scan the name for possible namespace | |
2026 | info. Only do this if this is C++, if we don't have namespace | |
2027 | debugging info in the file, if the psym is of an appropriate type | |
2028 | (otherwise we'll have psym == NULL), and if we actually had a | |
2029 | mangled name to begin with. */ | |
2030 | ||
72bf9492 DJ |
2031 | /* FIXME drow/2004-02-22: Why don't we do this for classes, i.e. the |
2032 | cases which do not set PSYM above? */ | |
2033 | ||
e142c38c | 2034 | if (cu->language == language_cplus |
72bf9492 | 2035 | && cu->has_namespace_info == 0 |
5c4e30ca DC |
2036 | && psym != NULL |
2037 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
2038 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
2039 | objfile); | |
72bf9492 DJ |
2040 | |
2041 | if (built_actual_name) | |
2042 | xfree (actual_name); | |
c906108c SS |
2043 | } |
2044 | ||
72bf9492 DJ |
2045 | /* Determine whether a die of type TAG living in a C++ class or |
2046 | namespace needs to have the name of the scope prepended to the | |
63d06c5c DC |
2047 | name listed in the die. */ |
2048 | ||
2049 | static int | |
72bf9492 | 2050 | pdi_needs_namespace (enum dwarf_tag tag) |
63d06c5c | 2051 | { |
63d06c5c DC |
2052 | switch (tag) |
2053 | { | |
72bf9492 | 2054 | case DW_TAG_namespace: |
63d06c5c DC |
2055 | case DW_TAG_typedef: |
2056 | case DW_TAG_class_type: | |
2057 | case DW_TAG_structure_type: | |
2058 | case DW_TAG_union_type: | |
2059 | case DW_TAG_enumeration_type: | |
2060 | case DW_TAG_enumerator: | |
2061 | return 1; | |
2062 | default: | |
2063 | return 0; | |
2064 | } | |
2065 | } | |
2066 | ||
5c4e30ca DC |
2067 | /* Read a partial die corresponding to a namespace; also, add a symbol |
2068 | corresponding to that namespace to the symbol table. NAMESPACE is | |
2069 | the name of the enclosing namespace. */ | |
91c24f0a | 2070 | |
72bf9492 DJ |
2071 | static void |
2072 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 2073 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
72bf9492 | 2074 | struct dwarf2_cu *cu) |
91c24f0a | 2075 | { |
e7c27a73 | 2076 | struct objfile *objfile = cu->objfile; |
5c4e30ca | 2077 | |
72bf9492 | 2078 | /* Add a symbol for the namespace. */ |
e7c27a73 | 2079 | |
72bf9492 | 2080 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
2081 | |
2082 | /* Now scan partial symbols in that namespace. */ | |
2083 | ||
91c24f0a | 2084 | if (pdi->has_children) |
72bf9492 | 2085 | scan_partial_symbols (pdi->die_child, lowpc, highpc, cu); |
91c24f0a DC |
2086 | } |
2087 | ||
72bf9492 DJ |
2088 | /* See if we can figure out if the class lives in a namespace. We do |
2089 | this by looking for a member function; its demangled name will | |
2090 | contain namespace info, if there is any. */ | |
63d06c5c | 2091 | |
72bf9492 DJ |
2092 | static void |
2093 | guess_structure_name (struct partial_die_info *struct_pdi, | |
2094 | struct dwarf2_cu *cu) | |
63d06c5c | 2095 | { |
987504bb JJ |
2096 | if ((cu->language == language_cplus |
2097 | || cu->language == language_java) | |
72bf9492 | 2098 | && cu->has_namespace_info == 0 |
63d06c5c DC |
2099 | && struct_pdi->has_children) |
2100 | { | |
63d06c5c DC |
2101 | /* NOTE: carlton/2003-10-07: Getting the info this way changes |
2102 | what template types look like, because the demangler | |
2103 | frequently doesn't give the same name as the debug info. We | |
2104 | could fix this by only using the demangled name to get the | |
134d01f1 | 2105 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 2106 | |
72bf9492 DJ |
2107 | struct partial_die_info *child_pdi = struct_pdi->die_child; |
2108 | struct partial_die_info *real_pdi; | |
5d51ca54 | 2109 | |
72bf9492 DJ |
2110 | /* If this DIE (this DIE's specification, if any) has a parent, then |
2111 | we should not do this. We'll prepend the parent's fully qualified | |
2112 | name when we create the partial symbol. */ | |
5d51ca54 | 2113 | |
72bf9492 | 2114 | real_pdi = struct_pdi; |
72bf9492 | 2115 | while (real_pdi->has_specification) |
10b3939b | 2116 | real_pdi = find_partial_die (real_pdi->spec_offset, cu); |
63d06c5c | 2117 | |
72bf9492 DJ |
2118 | if (real_pdi->die_parent != NULL) |
2119 | return; | |
63d06c5c | 2120 | |
72bf9492 DJ |
2121 | while (child_pdi != NULL) |
2122 | { | |
2123 | if (child_pdi->tag == DW_TAG_subprogram) | |
63d06c5c | 2124 | { |
72bf9492 | 2125 | char *actual_class_name |
31c27f77 JJ |
2126 | = language_class_name_from_physname (cu->language_defn, |
2127 | child_pdi->name); | |
63d06c5c | 2128 | if (actual_class_name != NULL) |
72bf9492 DJ |
2129 | { |
2130 | struct_pdi->name | |
2131 | = obsavestring (actual_class_name, | |
2132 | strlen (actual_class_name), | |
2133 | &cu->comp_unit_obstack); | |
2134 | xfree (actual_class_name); | |
2135 | } | |
63d06c5c DC |
2136 | break; |
2137 | } | |
72bf9492 DJ |
2138 | |
2139 | child_pdi = child_pdi->die_sibling; | |
63d06c5c DC |
2140 | } |
2141 | } | |
63d06c5c DC |
2142 | } |
2143 | ||
91c24f0a DC |
2144 | /* Read a partial die corresponding to an enumeration type. */ |
2145 | ||
72bf9492 DJ |
2146 | static void |
2147 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
2148 | struct dwarf2_cu *cu) | |
91c24f0a | 2149 | { |
e7c27a73 | 2150 | struct objfile *objfile = cu->objfile; |
91c24f0a | 2151 | bfd *abfd = objfile->obfd; |
72bf9492 | 2152 | struct partial_die_info *pdi; |
91c24f0a DC |
2153 | |
2154 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
2155 | add_partial_symbol (enum_pdi, cu); |
2156 | ||
2157 | pdi = enum_pdi->die_child; | |
2158 | while (pdi) | |
91c24f0a | 2159 | { |
72bf9492 | 2160 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
e2e0b3e5 | 2161 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
91c24f0a | 2162 | else |
72bf9492 DJ |
2163 | add_partial_symbol (pdi, cu); |
2164 | pdi = pdi->die_sibling; | |
91c24f0a | 2165 | } |
91c24f0a DC |
2166 | } |
2167 | ||
4bb7a0a7 DJ |
2168 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
2169 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
2170 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
2171 | the initial number. */ | |
2172 | ||
2173 | static struct abbrev_info * | |
fe1b8b76 | 2174 | peek_die_abbrev (gdb_byte *info_ptr, unsigned int *bytes_read, |
891d2f0b | 2175 | struct dwarf2_cu *cu) |
4bb7a0a7 DJ |
2176 | { |
2177 | bfd *abfd = cu->objfile->obfd; | |
2178 | unsigned int abbrev_number; | |
2179 | struct abbrev_info *abbrev; | |
2180 | ||
2181 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
2182 | ||
2183 | if (abbrev_number == 0) | |
2184 | return NULL; | |
2185 | ||
2186 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
2187 | if (!abbrev) | |
2188 | { | |
8a3fe4f8 | 2189 | error (_("Dwarf Error: Could not find abbrev number %d [in module %s]"), abbrev_number, |
4bb7a0a7 DJ |
2190 | bfd_get_filename (abfd)); |
2191 | } | |
2192 | ||
2193 | return abbrev; | |
2194 | } | |
2195 | ||
2196 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
2197 | pointer to the end of a series of DIEs, terminated by an empty | |
2198 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
2199 | ||
fe1b8b76 JB |
2200 | static gdb_byte * |
2201 | skip_children (gdb_byte *info_ptr, struct dwarf2_cu *cu) | |
4bb7a0a7 DJ |
2202 | { |
2203 | struct abbrev_info *abbrev; | |
2204 | unsigned int bytes_read; | |
2205 | ||
2206 | while (1) | |
2207 | { | |
2208 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
2209 | if (abbrev == NULL) | |
2210 | return info_ptr + bytes_read; | |
2211 | else | |
2212 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
2213 | } | |
2214 | } | |
2215 | ||
2216 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
2217 | should point just after the initial uleb128 of a DIE, and the | |
2218 | abbrev corresponding to that skipped uleb128 should be passed in | |
2219 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
2220 | children. */ | |
2221 | ||
fe1b8b76 JB |
2222 | static gdb_byte * |
2223 | skip_one_die (gdb_byte *info_ptr, struct abbrev_info *abbrev, | |
4bb7a0a7 DJ |
2224 | struct dwarf2_cu *cu) |
2225 | { | |
2226 | unsigned int bytes_read; | |
2227 | struct attribute attr; | |
2228 | bfd *abfd = cu->objfile->obfd; | |
2229 | unsigned int form, i; | |
2230 | ||
2231 | for (i = 0; i < abbrev->num_attrs; i++) | |
2232 | { | |
2233 | /* The only abbrev we care about is DW_AT_sibling. */ | |
2234 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
2235 | { | |
2236 | read_attribute (&attr, &abbrev->attrs[i], | |
2237 | abfd, info_ptr, cu); | |
2238 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 2239 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 2240 | else |
6502dd73 DJ |
2241 | return dwarf2_per_objfile->info_buffer |
2242 | + dwarf2_get_ref_die_offset (&attr, cu); | |
4bb7a0a7 DJ |
2243 | } |
2244 | ||
2245 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
2246 | form = abbrev->attrs[i].form; | |
2247 | skip_attribute: | |
2248 | switch (form) | |
2249 | { | |
2250 | case DW_FORM_addr: | |
2251 | case DW_FORM_ref_addr: | |
2252 | info_ptr += cu->header.addr_size; | |
2253 | break; | |
2254 | case DW_FORM_data1: | |
2255 | case DW_FORM_ref1: | |
2256 | case DW_FORM_flag: | |
2257 | info_ptr += 1; | |
2258 | break; | |
2259 | case DW_FORM_data2: | |
2260 | case DW_FORM_ref2: | |
2261 | info_ptr += 2; | |
2262 | break; | |
2263 | case DW_FORM_data4: | |
2264 | case DW_FORM_ref4: | |
2265 | info_ptr += 4; | |
2266 | break; | |
2267 | case DW_FORM_data8: | |
2268 | case DW_FORM_ref8: | |
2269 | info_ptr += 8; | |
2270 | break; | |
2271 | case DW_FORM_string: | |
2272 | read_string (abfd, info_ptr, &bytes_read); | |
2273 | info_ptr += bytes_read; | |
2274 | break; | |
2275 | case DW_FORM_strp: | |
2276 | info_ptr += cu->header.offset_size; | |
2277 | break; | |
2278 | case DW_FORM_block: | |
2279 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2280 | info_ptr += bytes_read; | |
2281 | break; | |
2282 | case DW_FORM_block1: | |
2283 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
2284 | break; | |
2285 | case DW_FORM_block2: | |
2286 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
2287 | break; | |
2288 | case DW_FORM_block4: | |
2289 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
2290 | break; | |
2291 | case DW_FORM_sdata: | |
2292 | case DW_FORM_udata: | |
2293 | case DW_FORM_ref_udata: | |
2294 | info_ptr = skip_leb128 (abfd, info_ptr); | |
2295 | break; | |
2296 | case DW_FORM_indirect: | |
2297 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
2298 | info_ptr += bytes_read; | |
2299 | /* We need to continue parsing from here, so just go back to | |
2300 | the top. */ | |
2301 | goto skip_attribute; | |
2302 | ||
2303 | default: | |
8a3fe4f8 | 2304 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
4bb7a0a7 DJ |
2305 | dwarf_form_name (form), |
2306 | bfd_get_filename (abfd)); | |
2307 | } | |
2308 | } | |
2309 | ||
2310 | if (abbrev->has_children) | |
2311 | return skip_children (info_ptr, cu); | |
2312 | else | |
2313 | return info_ptr; | |
2314 | } | |
2315 | ||
2316 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
2317 | the next DIE after ORIG_PDI. */ | |
91c24f0a | 2318 | |
fe1b8b76 JB |
2319 | static gdb_byte * |
2320 | locate_pdi_sibling (struct partial_die_info *orig_pdi, gdb_byte *info_ptr, | |
e7c27a73 | 2321 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
2322 | { |
2323 | /* Do we know the sibling already? */ | |
72bf9492 | 2324 | |
91c24f0a DC |
2325 | if (orig_pdi->sibling) |
2326 | return orig_pdi->sibling; | |
2327 | ||
2328 | /* Are there any children to deal with? */ | |
2329 | ||
2330 | if (!orig_pdi->has_children) | |
2331 | return info_ptr; | |
2332 | ||
4bb7a0a7 | 2333 | /* Skip the children the long way. */ |
91c24f0a | 2334 | |
4bb7a0a7 | 2335 | return skip_children (info_ptr, cu); |
91c24f0a DC |
2336 | } |
2337 | ||
c906108c SS |
2338 | /* Expand this partial symbol table into a full symbol table. */ |
2339 | ||
2340 | static void | |
fba45db2 | 2341 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
2342 | { |
2343 | /* FIXME: This is barely more than a stub. */ | |
2344 | if (pst != NULL) | |
2345 | { | |
2346 | if (pst->readin) | |
2347 | { | |
8a3fe4f8 | 2348 | warning (_("bug: psymtab for %s is already read in."), pst->filename); |
c906108c SS |
2349 | } |
2350 | else | |
2351 | { | |
2352 | if (info_verbose) | |
2353 | { | |
a3f17187 | 2354 | printf_filtered (_("Reading in symbols for %s..."), pst->filename); |
c906108c SS |
2355 | gdb_flush (gdb_stdout); |
2356 | } | |
2357 | ||
10b3939b DJ |
2358 | /* Restore our global data. */ |
2359 | dwarf2_per_objfile = objfile_data (pst->objfile, | |
2360 | dwarf2_objfile_data_key); | |
2361 | ||
c906108c SS |
2362 | psymtab_to_symtab_1 (pst); |
2363 | ||
2364 | /* Finish up the debug error message. */ | |
2365 | if (info_verbose) | |
a3f17187 | 2366 | printf_filtered (_("done.\n")); |
c906108c SS |
2367 | } |
2368 | } | |
2369 | } | |
2370 | ||
10b3939b DJ |
2371 | /* Add PER_CU to the queue. */ |
2372 | ||
2373 | static void | |
2374 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2375 | { | |
2376 | struct dwarf2_queue_item *item; | |
2377 | ||
2378 | per_cu->queued = 1; | |
2379 | item = xmalloc (sizeof (*item)); | |
2380 | item->per_cu = per_cu; | |
2381 | item->next = NULL; | |
2382 | ||
2383 | if (dwarf2_queue == NULL) | |
2384 | dwarf2_queue = item; | |
2385 | else | |
2386 | dwarf2_queue_tail->next = item; | |
2387 | ||
2388 | dwarf2_queue_tail = item; | |
2389 | } | |
2390 | ||
2391 | /* Process the queue. */ | |
2392 | ||
2393 | static void | |
2394 | process_queue (struct objfile *objfile) | |
2395 | { | |
2396 | struct dwarf2_queue_item *item, *next_item; | |
2397 | ||
2398 | /* Initially, there is just one item on the queue. Load its DIEs, | |
2399 | and the DIEs of any other compilation units it requires, | |
2400 | transitively. */ | |
2401 | ||
2402 | for (item = dwarf2_queue; item != NULL; item = item->next) | |
2403 | { | |
2404 | /* Read in this compilation unit. This may add new items to | |
2405 | the end of the queue. */ | |
31ffec48 | 2406 | load_full_comp_unit (item->per_cu, objfile); |
10b3939b DJ |
2407 | |
2408 | item->per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
2409 | dwarf2_per_objfile->read_in_chain = item->per_cu; | |
2410 | ||
2411 | /* If this compilation unit has already had full symbols created, | |
2412 | reset the TYPE fields in each DIE. */ | |
31ffec48 | 2413 | if (item->per_cu->type_hash) |
10b3939b DJ |
2414 | reset_die_and_siblings_types (item->per_cu->cu->dies, |
2415 | item->per_cu->cu); | |
2416 | } | |
2417 | ||
2418 | /* Now everything left on the queue needs to be read in. Process | |
2419 | them, one at a time, removing from the queue as we finish. */ | |
2420 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) | |
2421 | { | |
31ffec48 | 2422 | if (item->per_cu->psymtab && !item->per_cu->psymtab->readin) |
10b3939b DJ |
2423 | process_full_comp_unit (item->per_cu); |
2424 | ||
2425 | item->per_cu->queued = 0; | |
2426 | next_item = item->next; | |
2427 | xfree (item); | |
2428 | } | |
2429 | ||
2430 | dwarf2_queue_tail = NULL; | |
2431 | } | |
2432 | ||
2433 | /* Free all allocated queue entries. This function only releases anything if | |
2434 | an error was thrown; if the queue was processed then it would have been | |
2435 | freed as we went along. */ | |
2436 | ||
2437 | static void | |
2438 | dwarf2_release_queue (void *dummy) | |
2439 | { | |
2440 | struct dwarf2_queue_item *item, *last; | |
2441 | ||
2442 | item = dwarf2_queue; | |
2443 | while (item) | |
2444 | { | |
2445 | /* Anything still marked queued is likely to be in an | |
2446 | inconsistent state, so discard it. */ | |
2447 | if (item->per_cu->queued) | |
2448 | { | |
2449 | if (item->per_cu->cu != NULL) | |
2450 | free_one_cached_comp_unit (item->per_cu->cu); | |
2451 | item->per_cu->queued = 0; | |
2452 | } | |
2453 | ||
2454 | last = item; | |
2455 | item = item->next; | |
2456 | xfree (last); | |
2457 | } | |
2458 | ||
2459 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
2460 | } | |
2461 | ||
2462 | /* Read in full symbols for PST, and anything it depends on. */ | |
2463 | ||
c906108c | 2464 | static void |
fba45db2 | 2465 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 2466 | { |
10b3939b | 2467 | struct dwarf2_per_cu_data *per_cu; |
c906108c | 2468 | struct cleanup *back_to; |
aaa75496 JB |
2469 | int i; |
2470 | ||
2471 | for (i = 0; i < pst->number_of_dependencies; i++) | |
2472 | if (!pst->dependencies[i]->readin) | |
2473 | { | |
2474 | /* Inform about additional files that need to be read in. */ | |
2475 | if (info_verbose) | |
2476 | { | |
a3f17187 | 2477 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
2478 | fputs_filtered (" ", gdb_stdout); |
2479 | wrap_here (""); | |
2480 | fputs_filtered ("and ", gdb_stdout); | |
2481 | wrap_here (""); | |
2482 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
2483 | wrap_here (""); /* Flush output */ | |
2484 | gdb_flush (gdb_stdout); | |
2485 | } | |
2486 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
2487 | } | |
2488 | ||
10b3939b DJ |
2489 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
2490 | ||
2491 | if (per_cu == NULL) | |
aaa75496 JB |
2492 | { |
2493 | /* It's an include file, no symbols to read for it. | |
2494 | Everything is in the parent symtab. */ | |
2495 | pst->readin = 1; | |
2496 | return; | |
2497 | } | |
c906108c | 2498 | |
10b3939b DJ |
2499 | back_to = make_cleanup (dwarf2_release_queue, NULL); |
2500 | ||
2501 | queue_comp_unit (per_cu); | |
2502 | ||
2503 | process_queue (pst->objfile); | |
2504 | ||
2505 | /* Age the cache, releasing compilation units that have not | |
2506 | been used recently. */ | |
2507 | age_cached_comp_units (); | |
2508 | ||
2509 | do_cleanups (back_to); | |
2510 | } | |
2511 | ||
2512 | /* Load the DIEs associated with PST and PER_CU into memory. */ | |
2513 | ||
2514 | static struct dwarf2_cu * | |
31ffec48 | 2515 | load_full_comp_unit (struct dwarf2_per_cu_data *per_cu, struct objfile *objfile) |
10b3939b | 2516 | { |
31ffec48 | 2517 | bfd *abfd = objfile->obfd; |
10b3939b DJ |
2518 | struct dwarf2_cu *cu; |
2519 | unsigned long offset; | |
fe1b8b76 | 2520 | gdb_byte *info_ptr; |
10b3939b DJ |
2521 | struct cleanup *back_to, *free_cu_cleanup; |
2522 | struct attribute *attr; | |
2523 | CORE_ADDR baseaddr; | |
6502dd73 | 2524 | |
c906108c | 2525 | /* Set local variables from the partial symbol table info. */ |
10b3939b | 2526 | offset = per_cu->offset; |
6502dd73 DJ |
2527 | |
2528 | info_ptr = dwarf2_per_objfile->info_buffer + offset; | |
63d06c5c | 2529 | |
10b3939b DJ |
2530 | cu = xmalloc (sizeof (struct dwarf2_cu)); |
2531 | memset (cu, 0, sizeof (struct dwarf2_cu)); | |
c906108c | 2532 | |
10b3939b DJ |
2533 | /* If an error occurs while loading, release our storage. */ |
2534 | free_cu_cleanup = make_cleanup (free_one_comp_unit, cu); | |
c906108c | 2535 | |
31ffec48 | 2536 | cu->objfile = objfile; |
e7c27a73 | 2537 | |
c906108c | 2538 | /* read in the comp_unit header */ |
10b3939b | 2539 | info_ptr = read_comp_unit_head (&cu->header, info_ptr, abfd); |
c906108c SS |
2540 | |
2541 | /* Read the abbrevs for this compilation unit */ | |
10b3939b DJ |
2542 | dwarf2_read_abbrevs (abfd, cu); |
2543 | back_to = make_cleanup (dwarf2_free_abbrev_table, cu); | |
2544 | ||
2545 | cu->header.offset = offset; | |
c906108c | 2546 | |
10b3939b DJ |
2547 | cu->per_cu = per_cu; |
2548 | per_cu->cu = cu; | |
e142c38c | 2549 | |
10b3939b DJ |
2550 | /* We use this obstack for block values in dwarf_alloc_block. */ |
2551 | obstack_init (&cu->comp_unit_obstack); | |
2552 | ||
2553 | cu->dies = read_comp_unit (info_ptr, abfd, cu); | |
2554 | ||
2555 | /* We try not to read any attributes in this function, because not | |
2556 | all objfiles needed for references have been loaded yet, and symbol | |
2557 | table processing isn't initialized. But we have to set the CU language, | |
2558 | or we won't be able to build types correctly. */ | |
2559 | attr = dwarf2_attr (cu->dies, DW_AT_language, cu); | |
2560 | if (attr) | |
2561 | set_cu_language (DW_UNSND (attr), cu); | |
2562 | else | |
2563 | set_cu_language (language_minimal, cu); | |
2564 | ||
2565 | do_cleanups (back_to); | |
e142c38c | 2566 | |
10b3939b DJ |
2567 | /* We've successfully allocated this compilation unit. Let our caller |
2568 | clean it up when finished with it. */ | |
2569 | discard_cleanups (free_cu_cleanup); | |
c906108c | 2570 | |
10b3939b DJ |
2571 | return cu; |
2572 | } | |
2573 | ||
2574 | /* Generate full symbol information for PST and CU, whose DIEs have | |
2575 | already been loaded into memory. */ | |
2576 | ||
2577 | static void | |
2578 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu) | |
2579 | { | |
2580 | struct partial_symtab *pst = per_cu->psymtab; | |
2581 | struct dwarf2_cu *cu = per_cu->cu; | |
2582 | struct objfile *objfile = pst->objfile; | |
2583 | bfd *abfd = objfile->obfd; | |
2584 | CORE_ADDR lowpc, highpc; | |
2585 | struct symtab *symtab; | |
2586 | struct cleanup *back_to; | |
2587 | struct attribute *attr; | |
2588 | CORE_ADDR baseaddr; | |
2589 | ||
2590 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
2591 | ||
2592 | /* We're in the global namespace. */ | |
2593 | processing_current_prefix = ""; | |
2594 | ||
2595 | buildsym_init (); | |
2596 | back_to = make_cleanup (really_free_pendings, NULL); | |
2597 | ||
2598 | cu->list_in_scope = &file_symbols; | |
c906108c | 2599 | |
0d53c4c4 DJ |
2600 | /* Find the base address of the compilation unit for range lists and |
2601 | location lists. It will normally be specified by DW_AT_low_pc. | |
2602 | In DWARF-3 draft 4, the base address could be overridden by | |
2603 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
2604 | compilation units with discontinuous ranges. */ | |
2605 | ||
10b3939b DJ |
2606 | cu->header.base_known = 0; |
2607 | cu->header.base_address = 0; | |
0d53c4c4 | 2608 | |
10b3939b | 2609 | attr = dwarf2_attr (cu->dies, DW_AT_entry_pc, cu); |
0d53c4c4 DJ |
2610 | if (attr) |
2611 | { | |
10b3939b DJ |
2612 | cu->header.base_address = DW_ADDR (attr); |
2613 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2614 | } |
2615 | else | |
2616 | { | |
10b3939b | 2617 | attr = dwarf2_attr (cu->dies, DW_AT_low_pc, cu); |
0d53c4c4 DJ |
2618 | if (attr) |
2619 | { | |
10b3939b DJ |
2620 | cu->header.base_address = DW_ADDR (attr); |
2621 | cu->header.base_known = 1; | |
0d53c4c4 DJ |
2622 | } |
2623 | } | |
2624 | ||
c906108c | 2625 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 2626 | process_die (cu->dies, cu); |
c906108c | 2627 | |
fae299cd DC |
2628 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
2629 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
2630 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 2631 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 2632 | |
613e1657 | 2633 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
2634 | |
2635 | /* Set symtab language to language from DW_AT_language. | |
2636 | If the compilation is from a C file generated by language preprocessors, | |
2637 | do not set the language if it was already deduced by start_subfile. */ | |
2638 | if (symtab != NULL | |
10b3939b | 2639 | && !(cu->language == language_c && symtab->language != language_c)) |
c906108c | 2640 | { |
10b3939b | 2641 | symtab->language = cu->language; |
c906108c SS |
2642 | } |
2643 | pst->symtab = symtab; | |
2644 | pst->readin = 1; | |
c906108c SS |
2645 | |
2646 | do_cleanups (back_to); | |
2647 | } | |
2648 | ||
2649 | /* Process a die and its children. */ | |
2650 | ||
2651 | static void | |
e7c27a73 | 2652 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2653 | { |
2654 | switch (die->tag) | |
2655 | { | |
2656 | case DW_TAG_padding: | |
2657 | break; | |
2658 | case DW_TAG_compile_unit: | |
e7c27a73 | 2659 | read_file_scope (die, cu); |
c906108c SS |
2660 | break; |
2661 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
2662 | read_subroutine_type (die, cu); |
2663 | read_func_scope (die, cu); | |
c906108c SS |
2664 | break; |
2665 | case DW_TAG_inlined_subroutine: | |
2666 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2667 | They could be used to set breakpoints on all inlined instances |
2668 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2669 | break; |
2670 | case DW_TAG_lexical_block: | |
14898363 L |
2671 | case DW_TAG_try_block: |
2672 | case DW_TAG_catch_block: | |
e7c27a73 | 2673 | read_lexical_block_scope (die, cu); |
c906108c SS |
2674 | break; |
2675 | case DW_TAG_class_type: | |
2676 | case DW_TAG_structure_type: | |
2677 | case DW_TAG_union_type: | |
134d01f1 DJ |
2678 | read_structure_type (die, cu); |
2679 | process_structure_scope (die, cu); | |
c906108c SS |
2680 | break; |
2681 | case DW_TAG_enumeration_type: | |
134d01f1 DJ |
2682 | read_enumeration_type (die, cu); |
2683 | process_enumeration_scope (die, cu); | |
c906108c | 2684 | break; |
134d01f1 DJ |
2685 | |
2686 | /* FIXME drow/2004-03-14: These initialize die->type, but do not create | |
2687 | a symbol or process any children. Therefore it doesn't do anything | |
2688 | that won't be done on-demand by read_type_die. */ | |
c906108c | 2689 | case DW_TAG_subroutine_type: |
e7c27a73 | 2690 | read_subroutine_type (die, cu); |
c906108c | 2691 | break; |
72019c9c GM |
2692 | case DW_TAG_set_type: |
2693 | read_set_type (die, cu); | |
2694 | break; | |
c906108c | 2695 | case DW_TAG_array_type: |
e7c27a73 | 2696 | read_array_type (die, cu); |
c906108c SS |
2697 | break; |
2698 | case DW_TAG_pointer_type: | |
e7c27a73 | 2699 | read_tag_pointer_type (die, cu); |
c906108c SS |
2700 | break; |
2701 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 2702 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
2703 | break; |
2704 | case DW_TAG_reference_type: | |
e7c27a73 | 2705 | read_tag_reference_type (die, cu); |
c906108c SS |
2706 | break; |
2707 | case DW_TAG_string_type: | |
e7c27a73 | 2708 | read_tag_string_type (die, cu); |
c906108c | 2709 | break; |
134d01f1 DJ |
2710 | /* END FIXME */ |
2711 | ||
c906108c | 2712 | case DW_TAG_base_type: |
e7c27a73 | 2713 | read_base_type (die, cu); |
134d01f1 DJ |
2714 | /* Add a typedef symbol for the type definition, if it has a |
2715 | DW_AT_name. */ | |
2716 | new_symbol (die, die->type, cu); | |
c906108c | 2717 | break; |
a02abb62 JB |
2718 | case DW_TAG_subrange_type: |
2719 | read_subrange_type (die, cu); | |
134d01f1 DJ |
2720 | /* Add a typedef symbol for the type definition, if it has a |
2721 | DW_AT_name. */ | |
2722 | new_symbol (die, die->type, cu); | |
a02abb62 | 2723 | break; |
c906108c | 2724 | case DW_TAG_common_block: |
e7c27a73 | 2725 | read_common_block (die, cu); |
c906108c SS |
2726 | break; |
2727 | case DW_TAG_common_inclusion: | |
2728 | break; | |
d9fa45fe | 2729 | case DW_TAG_namespace: |
63d06c5c | 2730 | processing_has_namespace_info = 1; |
e7c27a73 | 2731 | read_namespace (die, cu); |
d9fa45fe DC |
2732 | break; |
2733 | case DW_TAG_imported_declaration: | |
2734 | case DW_TAG_imported_module: | |
2735 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2736 | information contained in these. DW_TAG_imported_declaration | |
2737 | dies shouldn't have children; DW_TAG_imported_module dies | |
2738 | shouldn't in the C++ case, but conceivably could in the | |
2739 | Fortran case, so we'll have to replace this gdb_assert if | |
2740 | Fortran compilers start generating that info. */ | |
63d06c5c | 2741 | processing_has_namespace_info = 1; |
639d11d3 | 2742 | gdb_assert (die->child == NULL); |
d9fa45fe | 2743 | break; |
c906108c | 2744 | default: |
e7c27a73 | 2745 | new_symbol (die, NULL, cu); |
c906108c SS |
2746 | break; |
2747 | } | |
2748 | } | |
2749 | ||
5fb290d7 | 2750 | static void |
e142c38c | 2751 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2752 | { |
e142c38c | 2753 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2754 | } |
2755 | ||
c906108c | 2756 | static void |
e7c27a73 | 2757 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2758 | { |
e7c27a73 DJ |
2759 | struct objfile *objfile = cu->objfile; |
2760 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2761 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2762 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2763 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2764 | struct attribute *attr; | |
2765 | char *name = "<unknown>"; | |
2766 | char *comp_dir = NULL; | |
2767 | struct die_info *child_die; | |
2768 | bfd *abfd = objfile->obfd; | |
debd256d | 2769 | struct line_header *line_header = 0; |
e142c38c DJ |
2770 | CORE_ADDR baseaddr; |
2771 | ||
2772 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2773 | |
fae299cd | 2774 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2775 | |
2776 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2777 | from finish_block. */ | |
2acceee2 | 2778 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2779 | lowpc = highpc; |
2780 | lowpc += baseaddr; | |
2781 | highpc += baseaddr; | |
2782 | ||
e142c38c | 2783 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2784 | if (attr) |
2785 | { | |
2786 | name = DW_STRING (attr); | |
2787 | } | |
e142c38c | 2788 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c SS |
2789 | if (attr) |
2790 | { | |
2791 | comp_dir = DW_STRING (attr); | |
2792 | if (comp_dir) | |
2793 | { | |
2794 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2795 | directory, get rid of it. */ | |
2796 | char *cp = strchr (comp_dir, ':'); | |
2797 | ||
2798 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
2799 | comp_dir = cp + 1; | |
2800 | } | |
2801 | } | |
2802 | ||
e142c38c | 2803 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2804 | if (attr) |
2805 | { | |
e142c38c | 2806 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2807 | } |
2808 | ||
b0f35d58 DL |
2809 | attr = dwarf2_attr (die, DW_AT_producer, cu); |
2810 | if (attr) | |
2811 | cu->producer = DW_STRING (attr); | |
303b6f5d | 2812 | |
c906108c SS |
2813 | /* We assume that we're processing GCC output. */ |
2814 | processing_gcc_compilation = 2; | |
c906108c SS |
2815 | |
2816 | /* The compilation unit may be in a different language or objfile, | |
2817 | zero out all remembered fundamental types. */ | |
e142c38c | 2818 | memset (cu->ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *)); |
c906108c SS |
2819 | |
2820 | start_symtab (name, comp_dir, lowpc); | |
2821 | record_debugformat ("DWARF 2"); | |
303b6f5d | 2822 | record_producer (cu->producer); |
c906108c | 2823 | |
e142c38c | 2824 | initialize_cu_func_list (cu); |
c906108c SS |
2825 | |
2826 | /* Process all dies in compilation unit. */ | |
639d11d3 | 2827 | if (die->child != NULL) |
c906108c | 2828 | { |
639d11d3 | 2829 | child_die = die->child; |
c906108c SS |
2830 | while (child_die && child_die->tag) |
2831 | { | |
e7c27a73 | 2832 | process_die (child_die, cu); |
c906108c SS |
2833 | child_die = sibling_die (child_die); |
2834 | } | |
2835 | } | |
5fb290d7 DJ |
2836 | |
2837 | /* Decode line number information if present. */ | |
e142c38c | 2838 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2839 | if (attr) |
2840 | { | |
debd256d | 2841 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2842 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2843 | if (line_header) |
2844 | { | |
2845 | make_cleanup ((make_cleanup_ftype *) free_line_header, | |
2846 | (void *) line_header); | |
aaa75496 | 2847 | dwarf_decode_lines (line_header, comp_dir, abfd, cu, NULL); |
debd256d | 2848 | } |
5fb290d7 | 2849 | } |
debd256d | 2850 | |
2e276125 JB |
2851 | /* Decode macro information, if present. Dwarf 2 macro information |
2852 | refers to information in the line number info statement program | |
2853 | header, so we can only read it if we've read the header | |
2854 | successfully. */ | |
e142c38c | 2855 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2856 | if (attr && line_header) |
2e276125 JB |
2857 | { |
2858 | unsigned int macro_offset = DW_UNSND (attr); | |
2859 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2860 | comp_dir, abfd, cu); |
2e276125 | 2861 | } |
debd256d | 2862 | do_cleanups (back_to); |
5fb290d7 DJ |
2863 | } |
2864 | ||
2865 | static void | |
e142c38c DJ |
2866 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2867 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2868 | { |
2869 | struct function_range *thisfn; | |
2870 | ||
2871 | thisfn = (struct function_range *) | |
7b5a2f43 | 2872 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct function_range)); |
5fb290d7 DJ |
2873 | thisfn->name = name; |
2874 | thisfn->lowpc = lowpc; | |
2875 | thisfn->highpc = highpc; | |
2876 | thisfn->seen_line = 0; | |
2877 | thisfn->next = NULL; | |
2878 | ||
e142c38c DJ |
2879 | if (cu->last_fn == NULL) |
2880 | cu->first_fn = thisfn; | |
5fb290d7 | 2881 | else |
e142c38c | 2882 | cu->last_fn->next = thisfn; |
5fb290d7 | 2883 | |
e142c38c | 2884 | cu->last_fn = thisfn; |
c906108c SS |
2885 | } |
2886 | ||
2887 | static void | |
e7c27a73 | 2888 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2889 | { |
e7c27a73 | 2890 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2891 | struct context_stack *new; |
c906108c SS |
2892 | CORE_ADDR lowpc; |
2893 | CORE_ADDR highpc; | |
2894 | struct die_info *child_die; | |
2895 | struct attribute *attr; | |
2896 | char *name; | |
fdde2d81 DC |
2897 | const char *previous_prefix = processing_current_prefix; |
2898 | struct cleanup *back_to = NULL; | |
e142c38c | 2899 | CORE_ADDR baseaddr; |
c906108c | 2900 | |
e142c38c DJ |
2901 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2902 | ||
2903 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2904 | |
2905 | /* Ignore functions with missing or empty names and functions with | |
2906 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2907 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2908 | return; |
2909 | ||
987504bb JJ |
2910 | if (cu->language == language_cplus |
2911 | || cu->language == language_java) | |
fdde2d81 | 2912 | { |
086ed43d | 2913 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2914 | |
2a35147e JB |
2915 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2916 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2917 | given the code | |
2918 | ||
2919 | namespace N { | |
2920 | void foo() { | |
2921 | // Definition of N::foo. | |
2922 | } | |
2923 | } | |
2924 | ||
2925 | then we'll have a tree of DIEs like this: | |
2926 | ||
2927 | 1: DW_TAG_compile_unit | |
2928 | 2: DW_TAG_namespace // N | |
2929 | 3: DW_TAG_subprogram // declaration of N::foo | |
2930 | 4: DW_TAG_subprogram // definition of N::foo | |
2931 | DW_AT_specification // refers to die #3 | |
2932 | ||
2933 | Thus, when processing die #4, we have to pretend that we're | |
2934 | in the context of its DW_AT_specification, namely the contex | |
2935 | of die #3. */ | |
fdde2d81 DC |
2936 | |
2937 | if (spec_die != NULL) | |
2938 | { | |
e142c38c | 2939 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
2940 | processing_current_prefix = specification_prefix; |
2941 | back_to = make_cleanup (xfree, specification_prefix); | |
2942 | } | |
2943 | } | |
2944 | ||
c906108c SS |
2945 | lowpc += baseaddr; |
2946 | highpc += baseaddr; | |
2947 | ||
5fb290d7 | 2948 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 2949 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 2950 | |
c906108c | 2951 | new = push_context (0, lowpc); |
e7c27a73 | 2952 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 2953 | |
4cecd739 DJ |
2954 | /* If there is a location expression for DW_AT_frame_base, record |
2955 | it. */ | |
e142c38c | 2956 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 2957 | if (attr) |
c034e007 AC |
2958 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
2959 | expression is being recorded directly in the function's symbol | |
2960 | and not in a separate frame-base object. I guess this hack is | |
2961 | to avoid adding some sort of frame-base adjunct/annex to the | |
2962 | function's symbol :-(. The problem with doing this is that it | |
2963 | results in a function symbol with a location expression that | |
2964 | has nothing to do with the location of the function, ouch! The | |
2965 | relationship should be: a function's symbol has-a frame base; a | |
2966 | frame-base has-a location expression. */ | |
e7c27a73 | 2967 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 2968 | |
e142c38c | 2969 | cu->list_in_scope = &local_symbols; |
c906108c | 2970 | |
639d11d3 | 2971 | if (die->child != NULL) |
c906108c | 2972 | { |
639d11d3 | 2973 | child_die = die->child; |
c906108c SS |
2974 | while (child_die && child_die->tag) |
2975 | { | |
e7c27a73 | 2976 | process_die (child_die, cu); |
c906108c SS |
2977 | child_die = sibling_die (child_die); |
2978 | } | |
2979 | } | |
2980 | ||
2981 | new = pop_context (); | |
2982 | /* Make a block for the local symbols within. */ | |
2983 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2984 | lowpc, highpc, objfile); | |
208d8187 JB |
2985 | |
2986 | /* In C++, we can have functions nested inside functions (e.g., when | |
2987 | a function declares a class that has methods). This means that | |
2988 | when we finish processing a function scope, we may need to go | |
2989 | back to building a containing block's symbol lists. */ | |
2990 | local_symbols = new->locals; | |
2991 | param_symbols = new->params; | |
2992 | ||
921e78cf JB |
2993 | /* If we've finished processing a top-level function, subsequent |
2994 | symbols go in the file symbol list. */ | |
2995 | if (outermost_context_p ()) | |
e142c38c | 2996 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
2997 | |
2998 | processing_current_prefix = previous_prefix; | |
2999 | if (back_to != NULL) | |
3000 | do_cleanups (back_to); | |
c906108c SS |
3001 | } |
3002 | ||
3003 | /* Process all the DIES contained within a lexical block scope. Start | |
3004 | a new scope, process the dies, and then close the scope. */ | |
3005 | ||
3006 | static void | |
e7c27a73 | 3007 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3008 | { |
e7c27a73 | 3009 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 3010 | struct context_stack *new; |
c906108c SS |
3011 | CORE_ADDR lowpc, highpc; |
3012 | struct die_info *child_die; | |
e142c38c DJ |
3013 | CORE_ADDR baseaddr; |
3014 | ||
3015 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
3016 | |
3017 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
3018 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
3019 | as multiple lexical blocks? Handling children in a sane way would | |
3020 | be nasty. Might be easier to properly extend generic blocks to | |
3021 | describe ranges. */ | |
e7c27a73 | 3022 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
3023 | return; |
3024 | lowpc += baseaddr; | |
3025 | highpc += baseaddr; | |
3026 | ||
3027 | push_context (0, lowpc); | |
639d11d3 | 3028 | if (die->child != NULL) |
c906108c | 3029 | { |
639d11d3 | 3030 | child_die = die->child; |
c906108c SS |
3031 | while (child_die && child_die->tag) |
3032 | { | |
e7c27a73 | 3033 | process_die (child_die, cu); |
c906108c SS |
3034 | child_die = sibling_die (child_die); |
3035 | } | |
3036 | } | |
3037 | new = pop_context (); | |
3038 | ||
3039 | if (local_symbols != NULL) | |
3040 | { | |
3041 | finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
3042 | highpc, objfile); | |
3043 | } | |
3044 | local_symbols = new->locals; | |
3045 | } | |
3046 | ||
af34e669 DJ |
3047 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
3048 | are present and valid, otherwise, return 0. Return -1 if the range is | |
3049 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 3050 | static int |
af34e669 | 3051 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 3052 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c | 3053 | { |
e7c27a73 DJ |
3054 | struct objfile *objfile = cu->objfile; |
3055 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 3056 | struct attribute *attr; |
af34e669 DJ |
3057 | bfd *obfd = objfile->obfd; |
3058 | CORE_ADDR low = 0; | |
3059 | CORE_ADDR high = 0; | |
3060 | int ret = 0; | |
c906108c | 3061 | |
e142c38c | 3062 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 3063 | if (attr) |
af34e669 DJ |
3064 | { |
3065 | high = DW_ADDR (attr); | |
e142c38c | 3066 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
3067 | if (attr) |
3068 | low = DW_ADDR (attr); | |
3069 | else | |
3070 | /* Found high w/o low attribute. */ | |
3071 | return 0; | |
3072 | ||
3073 | /* Found consecutive range of addresses. */ | |
3074 | ret = 1; | |
3075 | } | |
c906108c | 3076 | else |
af34e669 | 3077 | { |
e142c38c | 3078 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
3079 | if (attr != NULL) |
3080 | { | |
3081 | unsigned int addr_size = cu_header->addr_size; | |
3082 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
3083 | /* Value of the DW_AT_ranges attribute is the offset in the | |
a604369a | 3084 | .debug_ranges section. */ |
af34e669 DJ |
3085 | unsigned int offset = DW_UNSND (attr); |
3086 | /* Base address selection entry. */ | |
0d53c4c4 DJ |
3087 | CORE_ADDR base; |
3088 | int found_base; | |
891d2f0b | 3089 | unsigned int dummy; |
fe1b8b76 | 3090 | gdb_byte *buffer; |
af34e669 DJ |
3091 | CORE_ADDR marker; |
3092 | int low_set; | |
3093 | ||
0d53c4c4 DJ |
3094 | found_base = cu_header->base_known; |
3095 | base = cu_header->base_address; | |
a604369a | 3096 | |
6502dd73 | 3097 | if (offset >= dwarf2_per_objfile->ranges_size) |
a604369a KB |
3098 | { |
3099 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3100 | _("Offset %d out of bounds for DW_AT_ranges attribute"), |
a604369a KB |
3101 | offset); |
3102 | return 0; | |
3103 | } | |
6502dd73 | 3104 | buffer = dwarf2_per_objfile->ranges_buffer + offset; |
af34e669 | 3105 | |
af34e669 | 3106 | /* Read in the largest possible address. */ |
e7c27a73 | 3107 | marker = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
3108 | if ((marker & mask) == mask) |
3109 | { | |
3110 | /* If we found the largest possible address, then | |
3111 | read the base address. */ | |
e7c27a73 | 3112 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
3113 | buffer += 2 * addr_size; |
3114 | offset += 2 * addr_size; | |
3115 | found_base = 1; | |
3116 | } | |
3117 | ||
3118 | low_set = 0; | |
3119 | ||
3120 | while (1) | |
3121 | { | |
3122 | CORE_ADDR range_beginning, range_end; | |
3123 | ||
e7c27a73 | 3124 | range_beginning = read_address (obfd, buffer, cu, &dummy); |
af34e669 | 3125 | buffer += addr_size; |
e7c27a73 | 3126 | range_end = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
3127 | buffer += addr_size; |
3128 | offset += 2 * addr_size; | |
3129 | ||
3130 | /* An end of list marker is a pair of zero addresses. */ | |
3131 | if (range_beginning == 0 && range_end == 0) | |
3132 | /* Found the end of list entry. */ | |
3133 | break; | |
3134 | ||
3135 | /* Each base address selection entry is a pair of 2 values. | |
3136 | The first is the largest possible address, the second is | |
3137 | the base address. Check for a base address here. */ | |
3138 | if ((range_beginning & mask) == mask) | |
3139 | { | |
3140 | /* If we found the largest possible address, then | |
3141 | read the base address. */ | |
e7c27a73 | 3142 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
3143 | found_base = 1; |
3144 | continue; | |
3145 | } | |
3146 | ||
3147 | if (!found_base) | |
3148 | { | |
3149 | /* We have no valid base address for the ranges | |
3150 | data. */ | |
3151 | complaint (&symfile_complaints, | |
e2e0b3e5 | 3152 | _("Invalid .debug_ranges data (no base address)")); |
af34e669 DJ |
3153 | return 0; |
3154 | } | |
3155 | ||
8f05cde5 DJ |
3156 | range_beginning += base; |
3157 | range_end += base; | |
3158 | ||
af34e669 DJ |
3159 | /* FIXME: This is recording everything as a low-high |
3160 | segment of consecutive addresses. We should have a | |
3161 | data structure for discontiguous block ranges | |
3162 | instead. */ | |
3163 | if (! low_set) | |
3164 | { | |
3165 | low = range_beginning; | |
3166 | high = range_end; | |
3167 | low_set = 1; | |
3168 | } | |
3169 | else | |
3170 | { | |
3171 | if (range_beginning < low) | |
3172 | low = range_beginning; | |
3173 | if (range_end > high) | |
3174 | high = range_end; | |
3175 | } | |
3176 | } | |
3177 | ||
3178 | if (! low_set) | |
3179 | /* If the first entry is an end-of-list marker, the range | |
3180 | describes an empty scope, i.e. no instructions. */ | |
3181 | return 0; | |
3182 | ||
3183 | ret = -1; | |
3184 | } | |
3185 | } | |
c906108c SS |
3186 | |
3187 | if (high < low) | |
3188 | return 0; | |
3189 | ||
3190 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
3191 | eliminate duplicate copies of functions and vtables and such. | |
3192 | The linker will arbitrarily choose one and discard the others. | |
3193 | The AT_*_pc values for such functions refer to local labels in | |
3194 | these sections. If the section from that file was discarded, the | |
3195 | labels are not in the output, so the relocs get a value of 0. | |
3196 | If this is a discarded function, mark the pc bounds as invalid, | |
3197 | so that GDB will ignore it. */ | |
72dca2f5 | 3198 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
c906108c SS |
3199 | return 0; |
3200 | ||
3201 | *lowpc = low; | |
3202 | *highpc = high; | |
af34e669 | 3203 | return ret; |
c906108c SS |
3204 | } |
3205 | ||
fae299cd DC |
3206 | /* Get the low and high pc's represented by the scope DIE, and store |
3207 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
3208 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
3209 | ||
3210 | static void | |
3211 | get_scope_pc_bounds (struct die_info *die, | |
3212 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
3213 | struct dwarf2_cu *cu) | |
3214 | { | |
3215 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
3216 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
3217 | CORE_ADDR current_low, current_high; | |
3218 | ||
3219 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
3220 | { | |
3221 | best_low = current_low; | |
3222 | best_high = current_high; | |
3223 | } | |
3224 | else | |
3225 | { | |
3226 | struct die_info *child = die->child; | |
3227 | ||
3228 | while (child && child->tag) | |
3229 | { | |
3230 | switch (child->tag) { | |
3231 | case DW_TAG_subprogram: | |
3232 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
3233 | { | |
3234 | best_low = min (best_low, current_low); | |
3235 | best_high = max (best_high, current_high); | |
3236 | } | |
3237 | break; | |
3238 | case DW_TAG_namespace: | |
3239 | /* FIXME: carlton/2004-01-16: Should we do this for | |
3240 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
3241 | that current GCC's always emit the DIEs corresponding | |
3242 | to definitions of methods of classes as children of a | |
3243 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
3244 | the DIEs giving the declarations, which could be | |
3245 | anywhere). But I don't see any reason why the | |
3246 | standards says that they have to be there. */ | |
3247 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
3248 | ||
3249 | if (current_low != ((CORE_ADDR) -1)) | |
3250 | { | |
3251 | best_low = min (best_low, current_low); | |
3252 | best_high = max (best_high, current_high); | |
3253 | } | |
3254 | break; | |
3255 | default: | |
3256 | /* Ignore. */ | |
3257 | break; | |
3258 | } | |
3259 | ||
3260 | child = sibling_die (child); | |
3261 | } | |
3262 | } | |
3263 | ||
3264 | *lowpc = best_low; | |
3265 | *highpc = best_high; | |
3266 | } | |
3267 | ||
c906108c SS |
3268 | /* Add an aggregate field to the field list. */ |
3269 | ||
3270 | static void | |
107d2387 | 3271 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
3272 | struct dwarf2_cu *cu) |
3273 | { | |
3274 | struct objfile *objfile = cu->objfile; | |
c906108c SS |
3275 | struct nextfield *new_field; |
3276 | struct attribute *attr; | |
3277 | struct field *fp; | |
3278 | char *fieldname = ""; | |
3279 | ||
3280 | /* Allocate a new field list entry and link it in. */ | |
3281 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 3282 | make_cleanup (xfree, new_field); |
c906108c SS |
3283 | memset (new_field, 0, sizeof (struct nextfield)); |
3284 | new_field->next = fip->fields; | |
3285 | fip->fields = new_field; | |
3286 | fip->nfields++; | |
3287 | ||
3288 | /* Handle accessibility and virtuality of field. | |
3289 | The default accessibility for members is public, the default | |
3290 | accessibility for inheritance is private. */ | |
3291 | if (die->tag != DW_TAG_inheritance) | |
3292 | new_field->accessibility = DW_ACCESS_public; | |
3293 | else | |
3294 | new_field->accessibility = DW_ACCESS_private; | |
3295 | new_field->virtuality = DW_VIRTUALITY_none; | |
3296 | ||
e142c38c | 3297 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3298 | if (attr) |
3299 | new_field->accessibility = DW_UNSND (attr); | |
3300 | if (new_field->accessibility != DW_ACCESS_public) | |
3301 | fip->non_public_fields = 1; | |
e142c38c | 3302 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
3303 | if (attr) |
3304 | new_field->virtuality = DW_UNSND (attr); | |
3305 | ||
3306 | fp = &new_field->field; | |
a9a9bd0f | 3307 | |
e142c38c | 3308 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 3309 | { |
a9a9bd0f DC |
3310 | /* Data member other than a C++ static data member. */ |
3311 | ||
c906108c | 3312 | /* Get type of field. */ |
e7c27a73 | 3313 | fp->type = die_type (die, cu); |
c906108c | 3314 | |
01ad7f36 DJ |
3315 | FIELD_STATIC_KIND (*fp) = 0; |
3316 | ||
c906108c | 3317 | /* Get bit size of field (zero if none). */ |
e142c38c | 3318 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
3319 | if (attr) |
3320 | { | |
3321 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
3322 | } | |
3323 | else | |
3324 | { | |
3325 | FIELD_BITSIZE (*fp) = 0; | |
3326 | } | |
3327 | ||
3328 | /* Get bit offset of field. */ | |
e142c38c | 3329 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
3330 | if (attr) |
3331 | { | |
3332 | FIELD_BITPOS (*fp) = | |
e7c27a73 | 3333 | decode_locdesc (DW_BLOCK (attr), cu) * bits_per_byte; |
c906108c SS |
3334 | } |
3335 | else | |
3336 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 3337 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
3338 | if (attr) |
3339 | { | |
3340 | if (BITS_BIG_ENDIAN) | |
3341 | { | |
3342 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
3343 | additional bit offset from the MSB of the containing |
3344 | anonymous object to the MSB of the field. We don't | |
3345 | have to do anything special since we don't need to | |
3346 | know the size of the anonymous object. */ | |
c906108c SS |
3347 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
3348 | } | |
3349 | else | |
3350 | { | |
3351 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
3352 | MSB of the anonymous object, subtract off the number of |
3353 | bits from the MSB of the field to the MSB of the | |
3354 | object, and then subtract off the number of bits of | |
3355 | the field itself. The result is the bit offset of | |
3356 | the LSB of the field. */ | |
c906108c SS |
3357 | int anonymous_size; |
3358 | int bit_offset = DW_UNSND (attr); | |
3359 | ||
e142c38c | 3360 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3361 | if (attr) |
3362 | { | |
3363 | /* The size of the anonymous object containing | |
3364 | the bit field is explicit, so use the | |
3365 | indicated size (in bytes). */ | |
3366 | anonymous_size = DW_UNSND (attr); | |
3367 | } | |
3368 | else | |
3369 | { | |
3370 | /* The size of the anonymous object containing | |
3371 | the bit field must be inferred from the type | |
3372 | attribute of the data member containing the | |
3373 | bit field. */ | |
3374 | anonymous_size = TYPE_LENGTH (fp->type); | |
3375 | } | |
3376 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
3377 | - bit_offset - FIELD_BITSIZE (*fp); | |
3378 | } | |
3379 | } | |
3380 | ||
3381 | /* Get name of field. */ | |
e142c38c | 3382 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3383 | if (attr && DW_STRING (attr)) |
3384 | fieldname = DW_STRING (attr); | |
d8151005 DJ |
3385 | |
3386 | /* The name is already allocated along with this objfile, so we don't | |
3387 | need to duplicate it for the type. */ | |
3388 | fp->name = fieldname; | |
c906108c SS |
3389 | |
3390 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 3391 | pointer or virtual base class pointer) to private. */ |
e142c38c | 3392 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
3393 | { |
3394 | new_field->accessibility = DW_ACCESS_private; | |
3395 | fip->non_public_fields = 1; | |
3396 | } | |
3397 | } | |
a9a9bd0f | 3398 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 3399 | { |
a9a9bd0f DC |
3400 | /* C++ static member. */ |
3401 | ||
3402 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
3403 | is a declaration, but all versions of G++ as of this writing | |
3404 | (so through at least 3.2.1) incorrectly generate | |
3405 | DW_TAG_variable tags. */ | |
3406 | ||
c906108c | 3407 | char *physname; |
c906108c | 3408 | |
a9a9bd0f | 3409 | /* Get name of field. */ |
e142c38c | 3410 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
3411 | if (attr && DW_STRING (attr)) |
3412 | fieldname = DW_STRING (attr); | |
3413 | else | |
c906108c SS |
3414 | return; |
3415 | ||
2df3850c | 3416 | /* Get physical name. */ |
e142c38c | 3417 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 3418 | |
d8151005 DJ |
3419 | /* The name is already allocated along with this objfile, so we don't |
3420 | need to duplicate it for the type. */ | |
3421 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 3422 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 3423 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
3424 | } |
3425 | else if (die->tag == DW_TAG_inheritance) | |
3426 | { | |
3427 | /* C++ base class field. */ | |
e142c38c | 3428 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 3429 | if (attr) |
e7c27a73 | 3430 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 3431 | * bits_per_byte); |
c906108c | 3432 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 3433 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 3434 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
3435 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
3436 | fip->nbaseclasses++; | |
3437 | } | |
3438 | } | |
3439 | ||
3440 | /* Create the vector of fields, and attach it to the type. */ | |
3441 | ||
3442 | static void | |
fba45db2 | 3443 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3444 | struct dwarf2_cu *cu) |
c906108c SS |
3445 | { |
3446 | int nfields = fip->nfields; | |
3447 | ||
3448 | /* Record the field count, allocate space for the array of fields, | |
3449 | and create blank accessibility bitfields if necessary. */ | |
3450 | TYPE_NFIELDS (type) = nfields; | |
3451 | TYPE_FIELDS (type) = (struct field *) | |
3452 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
3453 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
3454 | ||
3455 | if (fip->non_public_fields) | |
3456 | { | |
3457 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3458 | ||
3459 | TYPE_FIELD_PRIVATE_BITS (type) = | |
3460 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3461 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
3462 | ||
3463 | TYPE_FIELD_PROTECTED_BITS (type) = | |
3464 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3465 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
3466 | ||
3467 | TYPE_FIELD_IGNORE_BITS (type) = | |
3468 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
3469 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
3470 | } | |
3471 | ||
3472 | /* If the type has baseclasses, allocate and clear a bit vector for | |
3473 | TYPE_FIELD_VIRTUAL_BITS. */ | |
3474 | if (fip->nbaseclasses) | |
3475 | { | |
3476 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
fe1b8b76 | 3477 | unsigned char *pointer; |
c906108c SS |
3478 | |
3479 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
fe1b8b76 JB |
3480 | pointer = TYPE_ALLOC (type, num_bytes); |
3481 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; | |
c906108c SS |
3482 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); |
3483 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
3484 | } | |
3485 | ||
3486 | /* Copy the saved-up fields into the field vector. Start from the head | |
3487 | of the list, adding to the tail of the field array, so that they end | |
3488 | up in the same order in the array in which they were added to the list. */ | |
3489 | while (nfields-- > 0) | |
3490 | { | |
3491 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
3492 | switch (fip->fields->accessibility) | |
3493 | { | |
c5aa993b JM |
3494 | case DW_ACCESS_private: |
3495 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
3496 | break; | |
c906108c | 3497 | |
c5aa993b JM |
3498 | case DW_ACCESS_protected: |
3499 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
3500 | break; | |
c906108c | 3501 | |
c5aa993b JM |
3502 | case DW_ACCESS_public: |
3503 | break; | |
c906108c | 3504 | |
c5aa993b JM |
3505 | default: |
3506 | /* Unknown accessibility. Complain and treat it as public. */ | |
3507 | { | |
e2e0b3e5 | 3508 | complaint (&symfile_complaints, _("unsupported accessibility %d"), |
4d3c2250 | 3509 | fip->fields->accessibility); |
c5aa993b JM |
3510 | } |
3511 | break; | |
c906108c SS |
3512 | } |
3513 | if (nfields < fip->nbaseclasses) | |
3514 | { | |
3515 | switch (fip->fields->virtuality) | |
3516 | { | |
c5aa993b JM |
3517 | case DW_VIRTUALITY_virtual: |
3518 | case DW_VIRTUALITY_pure_virtual: | |
3519 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
3520 | break; | |
c906108c SS |
3521 | } |
3522 | } | |
3523 | fip->fields = fip->fields->next; | |
3524 | } | |
3525 | } | |
3526 | ||
c906108c SS |
3527 | /* Add a member function to the proper fieldlist. */ |
3528 | ||
3529 | static void | |
107d2387 | 3530 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 3531 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 3532 | { |
e7c27a73 | 3533 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3534 | struct attribute *attr; |
3535 | struct fnfieldlist *flp; | |
3536 | int i; | |
3537 | struct fn_field *fnp; | |
3538 | char *fieldname; | |
3539 | char *physname; | |
3540 | struct nextfnfield *new_fnfield; | |
3541 | ||
2df3850c | 3542 | /* Get name of member function. */ |
e142c38c | 3543 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
3544 | if (attr && DW_STRING (attr)) |
3545 | fieldname = DW_STRING (attr); | |
c906108c | 3546 | else |
2df3850c | 3547 | return; |
c906108c | 3548 | |
2df3850c | 3549 | /* Get the mangled name. */ |
e142c38c | 3550 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
3551 | |
3552 | /* Look up member function name in fieldlist. */ | |
3553 | for (i = 0; i < fip->nfnfields; i++) | |
3554 | { | |
27bfe10e | 3555 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
3556 | break; |
3557 | } | |
3558 | ||
3559 | /* Create new list element if necessary. */ | |
3560 | if (i < fip->nfnfields) | |
3561 | flp = &fip->fnfieldlists[i]; | |
3562 | else | |
3563 | { | |
3564 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3565 | { | |
3566 | fip->fnfieldlists = (struct fnfieldlist *) | |
3567 | xrealloc (fip->fnfieldlists, | |
3568 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3569 | * sizeof (struct fnfieldlist)); |
c906108c | 3570 | if (fip->nfnfields == 0) |
c13c43fd | 3571 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
3572 | } |
3573 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
3574 | flp->name = fieldname; | |
3575 | flp->length = 0; | |
3576 | flp->head = NULL; | |
3577 | fip->nfnfields++; | |
3578 | } | |
3579 | ||
3580 | /* Create a new member function field and chain it to the field list | |
3581 | entry. */ | |
3582 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 3583 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
3584 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
3585 | new_fnfield->next = flp->head; | |
3586 | flp->head = new_fnfield; | |
3587 | flp->length++; | |
3588 | ||
3589 | /* Fill in the member function field info. */ | |
3590 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
3591 | /* The name is already allocated along with this objfile, so we don't |
3592 | need to duplicate it for the type. */ | |
3593 | fnp->physname = physname ? physname : ""; | |
c906108c SS |
3594 | fnp->type = alloc_type (objfile); |
3595 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
3596 | { | |
c906108c | 3597 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 3598 | |
e26fb1d7 DC |
3599 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
3600 | of the method itself (TYPE_CODE_METHOD). */ | |
3601 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
3602 | TYPE_TARGET_TYPE (die->type), |
3603 | TYPE_FIELDS (die->type), | |
3604 | TYPE_NFIELDS (die->type), | |
3605 | TYPE_VARARGS (die->type)); | |
c906108c SS |
3606 | |
3607 | /* Handle static member functions. | |
c5aa993b JM |
3608 | Dwarf2 has no clean way to discern C++ static and non-static |
3609 | member functions. G++ helps GDB by marking the first | |
3610 | parameter for non-static member functions (which is the | |
3611 | this pointer) as artificial. We obtain this information | |
3612 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
3613 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
3614 | fnp->voffset = VOFFSET_STATIC; | |
3615 | } | |
3616 | else | |
e2e0b3e5 | 3617 | complaint (&symfile_complaints, _("member function type missing for '%s'"), |
4d3c2250 | 3618 | physname); |
c906108c SS |
3619 | |
3620 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 3621 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 3622 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
3623 | |
3624 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
3625 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
3626 | ||
3627 | /* Get accessibility. */ | |
e142c38c | 3628 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
3629 | if (attr) |
3630 | { | |
3631 | switch (DW_UNSND (attr)) | |
3632 | { | |
c5aa993b JM |
3633 | case DW_ACCESS_private: |
3634 | fnp->is_private = 1; | |
3635 | break; | |
3636 | case DW_ACCESS_protected: | |
3637 | fnp->is_protected = 1; | |
3638 | break; | |
c906108c SS |
3639 | } |
3640 | } | |
3641 | ||
b02dede2 | 3642 | /* Check for artificial methods. */ |
e142c38c | 3643 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3644 | if (attr && DW_UNSND (attr) != 0) |
3645 | fnp->is_artificial = 1; | |
3646 | ||
c906108c | 3647 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3648 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3649 | if (attr) |
8e19ed76 PS |
3650 | { |
3651 | /* Support the .debug_loc offsets */ | |
3652 | if (attr_form_is_block (attr)) | |
3653 | { | |
e7c27a73 | 3654 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 PS |
3655 | } |
3656 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3657 | { | |
4d3c2250 | 3658 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3659 | } |
3660 | else | |
3661 | { | |
4d3c2250 KB |
3662 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3663 | fieldname); | |
8e19ed76 PS |
3664 | } |
3665 | } | |
c906108c SS |
3666 | } |
3667 | ||
3668 | /* Create the vector of member function fields, and attach it to the type. */ | |
3669 | ||
3670 | static void | |
fba45db2 | 3671 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3672 | struct dwarf2_cu *cu) |
c906108c SS |
3673 | { |
3674 | struct fnfieldlist *flp; | |
3675 | int total_length = 0; | |
3676 | int i; | |
3677 | ||
3678 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3679 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
3680 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
3681 | ||
3682 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
3683 | { | |
3684 | struct nextfnfield *nfp = flp->head; | |
3685 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
3686 | int k; | |
3687 | ||
3688 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
3689 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
3690 | fn_flp->fn_fields = (struct fn_field *) | |
3691 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
3692 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 3693 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
3694 | |
3695 | total_length += flp->length; | |
3696 | } | |
3697 | ||
3698 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
3699 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
3700 | } | |
3701 | ||
1168df01 JB |
3702 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
3703 | language, zero otherwise. */ | |
3704 | static int | |
3705 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
3706 | { | |
3707 | static const char vptr[] = "_vptr"; | |
987504bb | 3708 | static const char vtable[] = "vtable"; |
1168df01 | 3709 | |
987504bb JJ |
3710 | /* Look for the C++ and Java forms of the vtable. */ |
3711 | if ((cu->language == language_java | |
3712 | && strncmp (name, vtable, sizeof (vtable) - 1) == 0) | |
3713 | || (strncmp (name, vptr, sizeof (vptr) - 1) == 0 | |
3714 | && is_cplus_marker (name[sizeof (vptr) - 1]))) | |
1168df01 JB |
3715 | return 1; |
3716 | ||
3717 | return 0; | |
3718 | } | |
3719 | ||
c0dd20ea DJ |
3720 | /* GCC outputs unnamed structures that are really pointers to member |
3721 | functions, with the ABI-specified layout. If DIE (from CU) describes | |
3722 | such a structure, set its type, and return nonzero. Otherwise return | |
61049d3b DJ |
3723 | zero. |
3724 | ||
3725 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
3726 | This is GCC PR debug/28767. */ | |
c0dd20ea DJ |
3727 | |
3728 | static int | |
3729 | quirk_gcc_member_function_pointer (struct die_info *die, struct dwarf2_cu *cu) | |
3730 | { | |
3731 | struct objfile *objfile = cu->objfile; | |
3732 | struct type *type; | |
3733 | struct die_info *pfn_die, *delta_die; | |
3734 | struct attribute *pfn_name, *delta_name; | |
3735 | struct type *pfn_type, *domain_type; | |
3736 | ||
3737 | /* Check for a structure with no name and two children. */ | |
3738 | if (die->tag != DW_TAG_structure_type | |
3739 | || dwarf2_attr (die, DW_AT_name, cu) != NULL | |
3740 | || die->child == NULL | |
3741 | || die->child->sibling == NULL | |
3742 | || (die->child->sibling->sibling != NULL | |
3743 | && die->child->sibling->sibling->tag != DW_TAG_padding)) | |
3744 | return 0; | |
3745 | ||
3746 | /* Check for __pfn and __delta members. */ | |
3747 | pfn_die = die->child; | |
3748 | pfn_name = dwarf2_attr (pfn_die, DW_AT_name, cu); | |
3749 | if (pfn_die->tag != DW_TAG_member | |
3750 | || pfn_name == NULL | |
3751 | || DW_STRING (pfn_name) == NULL | |
3752 | || strcmp ("__pfn", DW_STRING (pfn_name)) != 0) | |
3753 | return 0; | |
3754 | ||
3755 | delta_die = pfn_die->sibling; | |
3756 | delta_name = dwarf2_attr (delta_die, DW_AT_name, cu); | |
3757 | if (delta_die->tag != DW_TAG_member | |
3758 | || delta_name == NULL | |
3759 | || DW_STRING (delta_name) == NULL | |
3760 | || strcmp ("__delta", DW_STRING (delta_name)) != 0) | |
3761 | return 0; | |
3762 | ||
3763 | /* Find the type of the method. */ | |
3764 | pfn_type = die_type (pfn_die, cu); | |
3765 | if (pfn_type == NULL | |
3766 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
3767 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
3768 | return 0; | |
3769 | ||
3770 | /* Look for the "this" argument. */ | |
3771 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
3772 | if (TYPE_NFIELDS (pfn_type) == 0 | |
3773 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) | |
3774 | return 0; | |
3775 | ||
3776 | domain_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); | |
3777 | type = alloc_type (objfile); | |
3778 | smash_to_method_type (type, domain_type, TYPE_TARGET_TYPE (pfn_type), | |
3779 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), | |
3780 | TYPE_VARARGS (pfn_type)); | |
0d5de010 | 3781 | type = lookup_methodptr_type (type); |
c0dd20ea DJ |
3782 | set_die_type (die, type, cu); |
3783 | ||
3784 | return 1; | |
3785 | } | |
1168df01 | 3786 | |
c906108c SS |
3787 | /* Called when we find the DIE that starts a structure or union scope |
3788 | (definition) to process all dies that define the members of the | |
3789 | structure or union. | |
3790 | ||
3791 | NOTE: we need to call struct_type regardless of whether or not the | |
3792 | DIE has an at_name attribute, since it might be an anonymous | |
3793 | structure or union. This gets the type entered into our set of | |
3794 | user defined types. | |
3795 | ||
3796 | However, if the structure is incomplete (an opaque struct/union) | |
3797 | then suppress creating a symbol table entry for it since gdb only | |
3798 | wants to find the one with the complete definition. Note that if | |
3799 | it is complete, we just call new_symbol, which does it's own | |
3800 | checking about whether the struct/union is anonymous or not (and | |
3801 | suppresses creating a symbol table entry itself). */ | |
3802 | ||
3803 | static void | |
134d01f1 | 3804 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3805 | { |
e7c27a73 | 3806 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3807 | struct type *type; |
3808 | struct attribute *attr; | |
63d06c5c DC |
3809 | const char *previous_prefix = processing_current_prefix; |
3810 | struct cleanup *back_to = NULL; | |
c906108c | 3811 | |
134d01f1 DJ |
3812 | if (die->type) |
3813 | return; | |
3814 | ||
c0dd20ea DJ |
3815 | if (quirk_gcc_member_function_pointer (die, cu)) |
3816 | return; | |
c906108c | 3817 | |
c0dd20ea | 3818 | type = alloc_type (objfile); |
c906108c | 3819 | INIT_CPLUS_SPECIFIC (type); |
e142c38c | 3820 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3821 | if (attr && DW_STRING (attr)) |
3822 | { | |
987504bb JJ |
3823 | if (cu->language == language_cplus |
3824 | || cu->language == language_java) | |
63d06c5c | 3825 | { |
8176b9b8 DC |
3826 | char *new_prefix = determine_class_name (die, cu); |
3827 | TYPE_TAG_NAME (type) = obsavestring (new_prefix, | |
3828 | strlen (new_prefix), | |
3829 | &objfile->objfile_obstack); | |
3830 | back_to = make_cleanup (xfree, new_prefix); | |
63d06c5c DC |
3831 | processing_current_prefix = new_prefix; |
3832 | } | |
3833 | else | |
3834 | { | |
d8151005 DJ |
3835 | /* The name is already allocated along with this objfile, so |
3836 | we don't need to duplicate it for the type. */ | |
8176b9b8 | 3837 | TYPE_TAG_NAME (type) = DW_STRING (attr); |
63d06c5c | 3838 | } |
c906108c SS |
3839 | } |
3840 | ||
3841 | if (die->tag == DW_TAG_structure_type) | |
3842 | { | |
3843 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
3844 | } | |
3845 | else if (die->tag == DW_TAG_union_type) | |
3846 | { | |
3847 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
3848 | } | |
3849 | else | |
3850 | { | |
3851 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 3852 | in gdbtypes.h. */ |
c906108c SS |
3853 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
3854 | } | |
3855 | ||
e142c38c | 3856 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3857 | if (attr) |
3858 | { | |
3859 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3860 | } | |
3861 | else | |
3862 | { | |
3863 | TYPE_LENGTH (type) = 0; | |
3864 | } | |
3865 | ||
dc718098 JB |
3866 | if (die_is_declaration (die, cu)) |
3867 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
3868 | ||
c906108c SS |
3869 | /* We need to add the type field to the die immediately so we don't |
3870 | infinitely recurse when dealing with pointers to the structure | |
3871 | type within the structure itself. */ | |
1c379e20 | 3872 | set_die_type (die, type, cu); |
c906108c | 3873 | |
e142c38c | 3874 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
3875 | { |
3876 | struct field_info fi; | |
3877 | struct die_info *child_die; | |
3878 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
3879 | ||
3880 | memset (&fi, 0, sizeof (struct field_info)); | |
3881 | ||
639d11d3 | 3882 | child_die = die->child; |
c906108c SS |
3883 | |
3884 | while (child_die && child_die->tag) | |
3885 | { | |
a9a9bd0f DC |
3886 | if (child_die->tag == DW_TAG_member |
3887 | || child_die->tag == DW_TAG_variable) | |
c906108c | 3888 | { |
a9a9bd0f DC |
3889 | /* NOTE: carlton/2002-11-05: A C++ static data member |
3890 | should be a DW_TAG_member that is a declaration, but | |
3891 | all versions of G++ as of this writing (so through at | |
3892 | least 3.2.1) incorrectly generate DW_TAG_variable | |
3893 | tags for them instead. */ | |
e7c27a73 | 3894 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3895 | } |
8713b1b1 | 3896 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
3897 | { |
3898 | /* C++ member function. */ | |
134d01f1 | 3899 | read_type_die (child_die, cu); |
e7c27a73 | 3900 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
3901 | } |
3902 | else if (child_die->tag == DW_TAG_inheritance) | |
3903 | { | |
3904 | /* C++ base class field. */ | |
e7c27a73 | 3905 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3906 | } |
c906108c SS |
3907 | child_die = sibling_die (child_die); |
3908 | } | |
3909 | ||
3910 | /* Attach fields and member functions to the type. */ | |
3911 | if (fi.nfields) | |
e7c27a73 | 3912 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
3913 | if (fi.nfnfields) |
3914 | { | |
e7c27a73 | 3915 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 3916 | |
c5aa993b | 3917 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
3918 | class itself) which contains the vtable pointer for the current |
3919 | class from the DW_AT_containing_type attribute. */ | |
3920 | ||
e142c38c | 3921 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 3922 | { |
e7c27a73 | 3923 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
3924 | |
3925 | TYPE_VPTR_BASETYPE (type) = t; | |
3926 | if (type == t) | |
3927 | { | |
c906108c SS |
3928 | int i; |
3929 | ||
3930 | /* Our own class provides vtbl ptr. */ | |
3931 | for (i = TYPE_NFIELDS (t) - 1; | |
3932 | i >= TYPE_N_BASECLASSES (t); | |
3933 | --i) | |
3934 | { | |
3935 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
3936 | ||
1168df01 | 3937 | if (is_vtable_name (fieldname, cu)) |
c906108c SS |
3938 | { |
3939 | TYPE_VPTR_FIELDNO (type) = i; | |
3940 | break; | |
3941 | } | |
3942 | } | |
3943 | ||
3944 | /* Complain if virtual function table field not found. */ | |
3945 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 | 3946 | complaint (&symfile_complaints, |
e2e0b3e5 | 3947 | _("virtual function table pointer not found when defining class '%s'"), |
4d3c2250 KB |
3948 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : |
3949 | ""); | |
c906108c SS |
3950 | } |
3951 | else | |
3952 | { | |
3953 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3954 | } | |
3955 | } | |
f6235d4c EZ |
3956 | else if (cu->producer |
3957 | && strncmp (cu->producer, | |
3958 | "IBM(R) XL C/C++ Advanced Edition", 32) == 0) | |
3959 | { | |
3960 | /* The IBM XLC compiler does not provide direct indication | |
3961 | of the containing type, but the vtable pointer is | |
3962 | always named __vfp. */ | |
3963 | ||
3964 | int i; | |
3965 | ||
3966 | for (i = TYPE_NFIELDS (type) - 1; | |
3967 | i >= TYPE_N_BASECLASSES (type); | |
3968 | --i) | |
3969 | { | |
3970 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
3971 | { | |
3972 | TYPE_VPTR_FIELDNO (type) = i; | |
3973 | TYPE_VPTR_BASETYPE (type) = type; | |
3974 | break; | |
3975 | } | |
3976 | } | |
3977 | } | |
c906108c SS |
3978 | } |
3979 | ||
c906108c SS |
3980 | do_cleanups (back_to); |
3981 | } | |
63d06c5c DC |
3982 | |
3983 | processing_current_prefix = previous_prefix; | |
3984 | if (back_to != NULL) | |
3985 | do_cleanups (back_to); | |
c906108c SS |
3986 | } |
3987 | ||
134d01f1 DJ |
3988 | static void |
3989 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
3990 | { | |
3991 | struct objfile *objfile = cu->objfile; | |
3992 | const char *previous_prefix = processing_current_prefix; | |
90aeadfc | 3993 | struct die_info *child_die = die->child; |
c906108c | 3994 | |
134d01f1 DJ |
3995 | if (TYPE_TAG_NAME (die->type) != NULL) |
3996 | processing_current_prefix = TYPE_TAG_NAME (die->type); | |
c906108c | 3997 | |
90aeadfc DC |
3998 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
3999 | snapshots) has been known to create a die giving a declaration | |
4000 | for a class that has, as a child, a die giving a definition for a | |
4001 | nested class. So we have to process our children even if the | |
4002 | current die is a declaration. Normally, of course, a declaration | |
4003 | won't have any children at all. */ | |
134d01f1 | 4004 | |
90aeadfc DC |
4005 | while (child_die != NULL && child_die->tag) |
4006 | { | |
4007 | if (child_die->tag == DW_TAG_member | |
4008 | || child_die->tag == DW_TAG_variable | |
4009 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 4010 | { |
90aeadfc | 4011 | /* Do nothing. */ |
134d01f1 | 4012 | } |
90aeadfc DC |
4013 | else |
4014 | process_die (child_die, cu); | |
134d01f1 | 4015 | |
90aeadfc | 4016 | child_die = sibling_die (child_die); |
134d01f1 DJ |
4017 | } |
4018 | ||
fa4028e9 JB |
4019 | /* Do not consider external references. According to the DWARF standard, |
4020 | these DIEs are identified by the fact that they have no byte_size | |
4021 | attribute, and a declaration attribute. */ | |
4022 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
4023 | || !die_is_declaration (die, cu)) | |
90aeadfc DC |
4024 | new_symbol (die, die->type, cu); |
4025 | ||
134d01f1 DJ |
4026 | processing_current_prefix = previous_prefix; |
4027 | } | |
4028 | ||
4029 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
4030 | complete the type's fields yet, or create any symbols. */ | |
c906108c SS |
4031 | |
4032 | static void | |
134d01f1 | 4033 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4034 | { |
e7c27a73 | 4035 | struct objfile *objfile = cu->objfile; |
c906108c | 4036 | struct type *type; |
c906108c | 4037 | struct attribute *attr; |
134d01f1 DJ |
4038 | |
4039 | if (die->type) | |
4040 | return; | |
c906108c SS |
4041 | |
4042 | type = alloc_type (objfile); | |
4043 | ||
4044 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
e142c38c | 4045 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
4046 | if (attr && DW_STRING (attr)) |
4047 | { | |
d8151005 | 4048 | char *name = DW_STRING (attr); |
63d06c5c DC |
4049 | |
4050 | if (processing_has_namespace_info) | |
4051 | { | |
987504bb JJ |
4052 | TYPE_TAG_NAME (type) = typename_concat (&objfile->objfile_obstack, |
4053 | processing_current_prefix, | |
4054 | name, cu); | |
63d06c5c DC |
4055 | } |
4056 | else | |
4057 | { | |
d8151005 DJ |
4058 | /* The name is already allocated along with this objfile, so |
4059 | we don't need to duplicate it for the type. */ | |
4060 | TYPE_TAG_NAME (type) = name; | |
63d06c5c | 4061 | } |
c906108c SS |
4062 | } |
4063 | ||
e142c38c | 4064 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4065 | if (attr) |
4066 | { | |
4067 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4068 | } | |
4069 | else | |
4070 | { | |
4071 | TYPE_LENGTH (type) = 0; | |
4072 | } | |
4073 | ||
1c379e20 | 4074 | set_die_type (die, type, cu); |
134d01f1 DJ |
4075 | } |
4076 | ||
8176b9b8 | 4077 | /* Determine the name of the type represented by DIE, which should be |
987504bb | 4078 | a named C++ or Java compound type. Return the name in question; the caller |
8176b9b8 DC |
4079 | is responsible for xfree()'ing it. */ |
4080 | ||
4081 | static char * | |
4082 | determine_class_name (struct die_info *die, struct dwarf2_cu *cu) | |
4083 | { | |
4084 | struct cleanup *back_to = NULL; | |
4085 | struct die_info *spec_die = die_specification (die, cu); | |
4086 | char *new_prefix = NULL; | |
4087 | ||
4088 | /* If this is the definition of a class that is declared by another | |
4089 | die, then processing_current_prefix may not be accurate; see | |
4090 | read_func_scope for a similar example. */ | |
4091 | if (spec_die != NULL) | |
4092 | { | |
4093 | char *specification_prefix = determine_prefix (spec_die, cu); | |
4094 | processing_current_prefix = specification_prefix; | |
4095 | back_to = make_cleanup (xfree, specification_prefix); | |
4096 | } | |
4097 | ||
4098 | /* If we don't have namespace debug info, guess the name by trying | |
4099 | to demangle the names of members, just like we did in | |
72bf9492 | 4100 | guess_structure_name. */ |
8176b9b8 DC |
4101 | if (!processing_has_namespace_info) |
4102 | { | |
4103 | struct die_info *child; | |
4104 | ||
4105 | for (child = die->child; | |
4106 | child != NULL && child->tag != 0; | |
4107 | child = sibling_die (child)) | |
4108 | { | |
4109 | if (child->tag == DW_TAG_subprogram) | |
4110 | { | |
31c27f77 JJ |
4111 | new_prefix |
4112 | = language_class_name_from_physname (cu->language_defn, | |
4113 | dwarf2_linkage_name | |
8176b9b8 DC |
4114 | (child, cu)); |
4115 | ||
4116 | if (new_prefix != NULL) | |
4117 | break; | |
4118 | } | |
4119 | } | |
4120 | } | |
4121 | ||
4122 | if (new_prefix == NULL) | |
4123 | { | |
4124 | const char *name = dwarf2_name (die, cu); | |
987504bb JJ |
4125 | new_prefix = typename_concat (NULL, processing_current_prefix, |
4126 | name ? name : "<<anonymous>>", | |
4127 | cu); | |
8176b9b8 DC |
4128 | } |
4129 | ||
4130 | if (back_to != NULL) | |
4131 | do_cleanups (back_to); | |
4132 | ||
4133 | return new_prefix; | |
4134 | } | |
4135 | ||
134d01f1 DJ |
4136 | /* Given a pointer to a die which begins an enumeration, process all |
4137 | the dies that define the members of the enumeration, and create the | |
4138 | symbol for the enumeration type. | |
4139 | ||
4140 | NOTE: We reverse the order of the element list. */ | |
4141 | ||
4142 | static void | |
4143 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
4144 | { | |
4145 | struct objfile *objfile = cu->objfile; | |
4146 | struct die_info *child_die; | |
4147 | struct field *fields; | |
4148 | struct attribute *attr; | |
4149 | struct symbol *sym; | |
4150 | int num_fields; | |
4151 | int unsigned_enum = 1; | |
4152 | ||
c906108c SS |
4153 | num_fields = 0; |
4154 | fields = NULL; | |
639d11d3 | 4155 | if (die->child != NULL) |
c906108c | 4156 | { |
639d11d3 | 4157 | child_die = die->child; |
c906108c SS |
4158 | while (child_die && child_die->tag) |
4159 | { | |
4160 | if (child_die->tag != DW_TAG_enumerator) | |
4161 | { | |
e7c27a73 | 4162 | process_die (child_die, cu); |
c906108c SS |
4163 | } |
4164 | else | |
4165 | { | |
e142c38c | 4166 | attr = dwarf2_attr (child_die, DW_AT_name, cu); |
c906108c SS |
4167 | if (attr) |
4168 | { | |
134d01f1 | 4169 | sym = new_symbol (child_die, die->type, cu); |
c906108c SS |
4170 | if (SYMBOL_VALUE (sym) < 0) |
4171 | unsigned_enum = 0; | |
4172 | ||
4173 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
4174 | { | |
4175 | fields = (struct field *) | |
4176 | xrealloc (fields, | |
4177 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 4178 | * sizeof (struct field)); |
c906108c SS |
4179 | } |
4180 | ||
22abf04a | 4181 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
4182 | FIELD_TYPE (fields[num_fields]) = NULL; |
4183 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
4184 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 4185 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
4186 | |
4187 | num_fields++; | |
4188 | } | |
4189 | } | |
4190 | ||
4191 | child_die = sibling_die (child_die); | |
4192 | } | |
4193 | ||
4194 | if (num_fields) | |
4195 | { | |
134d01f1 DJ |
4196 | TYPE_NFIELDS (die->type) = num_fields; |
4197 | TYPE_FIELDS (die->type) = (struct field *) | |
4198 | TYPE_ALLOC (die->type, sizeof (struct field) * num_fields); | |
4199 | memcpy (TYPE_FIELDS (die->type), fields, | |
c906108c | 4200 | sizeof (struct field) * num_fields); |
b8c9b27d | 4201 | xfree (fields); |
c906108c SS |
4202 | } |
4203 | if (unsigned_enum) | |
134d01f1 | 4204 | TYPE_FLAGS (die->type) |= TYPE_FLAG_UNSIGNED; |
c906108c | 4205 | } |
134d01f1 DJ |
4206 | |
4207 | new_symbol (die, die->type, cu); | |
c906108c SS |
4208 | } |
4209 | ||
4210 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
4211 | the DIE's type field. For now, this only handles one dimensional | |
4212 | arrays. */ | |
4213 | ||
4214 | static void | |
e7c27a73 | 4215 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4216 | { |
e7c27a73 | 4217 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4218 | struct die_info *child_die; |
4219 | struct type *type = NULL; | |
4220 | struct type *element_type, *range_type, *index_type; | |
4221 | struct type **range_types = NULL; | |
4222 | struct attribute *attr; | |
4223 | int ndim = 0; | |
4224 | struct cleanup *back_to; | |
4225 | ||
4226 | /* Return if we've already decoded this type. */ | |
4227 | if (die->type) | |
4228 | { | |
4229 | return; | |
4230 | } | |
4231 | ||
e7c27a73 | 4232 | element_type = die_type (die, cu); |
c906108c SS |
4233 | |
4234 | /* Irix 6.2 native cc creates array types without children for | |
4235 | arrays with unspecified length. */ | |
639d11d3 | 4236 | if (die->child == NULL) |
c906108c | 4237 | { |
e142c38c | 4238 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 4239 | range_type = create_range_type (NULL, index_type, 0, -1); |
1c379e20 DJ |
4240 | set_die_type (die, create_array_type (NULL, element_type, range_type), |
4241 | cu); | |
c906108c SS |
4242 | return; |
4243 | } | |
4244 | ||
4245 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 4246 | child_die = die->child; |
c906108c SS |
4247 | while (child_die && child_die->tag) |
4248 | { | |
4249 | if (child_die->tag == DW_TAG_subrange_type) | |
4250 | { | |
a02abb62 | 4251 | read_subrange_type (child_die, cu); |
c906108c | 4252 | |
a02abb62 JB |
4253 | if (child_die->type != NULL) |
4254 | { | |
4255 | /* The range type was succesfully read. Save it for | |
4256 | the array type creation. */ | |
4257 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
4258 | { | |
4259 | range_types = (struct type **) | |
4260 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
4261 | * sizeof (struct type *)); | |
4262 | if (ndim == 0) | |
4263 | make_cleanup (free_current_contents, &range_types); | |
4264 | } | |
4265 | range_types[ndim++] = child_die->type; | |
4266 | } | |
c906108c SS |
4267 | } |
4268 | child_die = sibling_die (child_die); | |
4269 | } | |
4270 | ||
4271 | /* Dwarf2 dimensions are output from left to right, create the | |
4272 | necessary array types in backwards order. */ | |
7ca2d3a3 | 4273 | |
c906108c | 4274 | type = element_type; |
7ca2d3a3 DL |
4275 | |
4276 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
4277 | { | |
4278 | int i = 0; | |
4279 | while (i < ndim) | |
4280 | type = create_array_type (NULL, type, range_types[i++]); | |
4281 | } | |
4282 | else | |
4283 | { | |
4284 | while (ndim-- > 0) | |
4285 | type = create_array_type (NULL, type, range_types[ndim]); | |
4286 | } | |
c906108c | 4287 | |
f5f8a009 EZ |
4288 | /* Understand Dwarf2 support for vector types (like they occur on |
4289 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
4290 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
4291 | custom vendor extension. The main difference between a regular | |
4292 | array and the vector variant is that vectors are passed by value | |
4293 | to functions. */ | |
e142c38c | 4294 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 EZ |
4295 | if (attr) |
4296 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
4297 | ||
714e295e JB |
4298 | attr = dwarf2_attr (die, DW_AT_name, cu); |
4299 | if (attr && DW_STRING (attr)) | |
4300 | TYPE_NAME (type) = DW_STRING (attr); | |
4301 | ||
c906108c SS |
4302 | do_cleanups (back_to); |
4303 | ||
4304 | /* Install the type in the die. */ | |
1c379e20 | 4305 | set_die_type (die, type, cu); |
c906108c SS |
4306 | } |
4307 | ||
7ca2d3a3 DL |
4308 | static enum dwarf_array_dim_ordering |
4309 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) | |
4310 | { | |
4311 | struct attribute *attr; | |
4312 | ||
4313 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
4314 | ||
4315 | if (attr) return DW_SND (attr); | |
4316 | ||
4317 | /* | |
4318 | GNU F77 is a special case, as at 08/2004 array type info is the | |
4319 | opposite order to the dwarf2 specification, but data is still | |
4320 | laid out as per normal fortran. | |
4321 | ||
4322 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need | |
4323 | version checking. | |
4324 | */ | |
4325 | ||
4326 | if (cu->language == language_fortran && | |
4327 | cu->producer && strstr (cu->producer, "GNU F77")) | |
4328 | { | |
4329 | return DW_ORD_row_major; | |
4330 | } | |
4331 | ||
4332 | switch (cu->language_defn->la_array_ordering) | |
4333 | { | |
4334 | case array_column_major: | |
4335 | return DW_ORD_col_major; | |
4336 | case array_row_major: | |
4337 | default: | |
4338 | return DW_ORD_row_major; | |
4339 | }; | |
4340 | } | |
4341 | ||
72019c9c GM |
4342 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
4343 | the DIE's type field. */ | |
4344 | ||
4345 | static void | |
4346 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) | |
4347 | { | |
4348 | if (die->type == NULL) | |
4349 | die->type = create_set_type ((struct type *) NULL, die_type (die, cu)); | |
4350 | } | |
7ca2d3a3 | 4351 | |
c906108c SS |
4352 | /* First cut: install each common block member as a global variable. */ |
4353 | ||
4354 | static void | |
e7c27a73 | 4355 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4356 | { |
4357 | struct die_info *child_die; | |
4358 | struct attribute *attr; | |
4359 | struct symbol *sym; | |
4360 | CORE_ADDR base = (CORE_ADDR) 0; | |
4361 | ||
e142c38c | 4362 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
4363 | if (attr) |
4364 | { | |
8e19ed76 PS |
4365 | /* Support the .debug_loc offsets */ |
4366 | if (attr_form_is_block (attr)) | |
4367 | { | |
e7c27a73 | 4368 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 PS |
4369 | } |
4370 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
4371 | { | |
4d3c2250 | 4372 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4373 | } |
4374 | else | |
4375 | { | |
4d3c2250 KB |
4376 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4377 | "common block member"); | |
8e19ed76 | 4378 | } |
c906108c | 4379 | } |
639d11d3 | 4380 | if (die->child != NULL) |
c906108c | 4381 | { |
639d11d3 | 4382 | child_die = die->child; |
c906108c SS |
4383 | while (child_die && child_die->tag) |
4384 | { | |
e7c27a73 | 4385 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 4386 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
4387 | if (attr) |
4388 | { | |
4389 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 4390 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
4391 | add_symbol_to_list (sym, &global_symbols); |
4392 | } | |
4393 | child_die = sibling_die (child_die); | |
4394 | } | |
4395 | } | |
4396 | } | |
4397 | ||
d9fa45fe DC |
4398 | /* Read a C++ namespace. */ |
4399 | ||
d9fa45fe | 4400 | static void |
e7c27a73 | 4401 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 4402 | { |
e7c27a73 | 4403 | struct objfile *objfile = cu->objfile; |
38d518c9 | 4404 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 4405 | const char *name; |
9219021c DC |
4406 | int is_anonymous; |
4407 | struct die_info *current_die; | |
987504bb | 4408 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
9219021c | 4409 | |
e142c38c | 4410 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
4411 | |
4412 | /* Now build the name of the current namespace. */ | |
4413 | ||
38d518c9 | 4414 | if (previous_prefix[0] == '\0') |
9219021c | 4415 | { |
38d518c9 | 4416 | processing_current_prefix = name; |
9219021c DC |
4417 | } |
4418 | else | |
4419 | { | |
987504bb JJ |
4420 | char *temp_name = typename_concat (NULL, previous_prefix, name, cu); |
4421 | make_cleanup (xfree, temp_name); | |
38d518c9 | 4422 | processing_current_prefix = temp_name; |
9219021c DC |
4423 | } |
4424 | ||
5c4e30ca DC |
4425 | /* Add a symbol associated to this if we haven't seen the namespace |
4426 | before. Also, add a using directive if it's an anonymous | |
4427 | namespace. */ | |
9219021c | 4428 | |
e142c38c | 4429 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
4430 | { |
4431 | struct type *type; | |
4432 | ||
4433 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
4434 | this cast will hopefully become unnecessary. */ | |
4435 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 4436 | (char *) processing_current_prefix, |
5c4e30ca DC |
4437 | objfile); |
4438 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
4439 | ||
e7c27a73 | 4440 | new_symbol (die, type, cu); |
1c379e20 | 4441 | set_die_type (die, type, cu); |
5c4e30ca DC |
4442 | |
4443 | if (is_anonymous) | |
38d518c9 EZ |
4444 | cp_add_using_directive (processing_current_prefix, |
4445 | strlen (previous_prefix), | |
4446 | strlen (processing_current_prefix)); | |
5c4e30ca | 4447 | } |
9219021c | 4448 | |
639d11d3 | 4449 | if (die->child != NULL) |
d9fa45fe | 4450 | { |
639d11d3 | 4451 | struct die_info *child_die = die->child; |
d9fa45fe DC |
4452 | |
4453 | while (child_die && child_die->tag) | |
4454 | { | |
e7c27a73 | 4455 | process_die (child_die, cu); |
d9fa45fe DC |
4456 | child_die = sibling_die (child_die); |
4457 | } | |
4458 | } | |
9219021c | 4459 | |
38d518c9 | 4460 | processing_current_prefix = previous_prefix; |
987504bb | 4461 | do_cleanups (back_to); |
38d518c9 EZ |
4462 | } |
4463 | ||
4464 | /* Return the name of the namespace represented by DIE. Set | |
4465 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
4466 | namespace. */ | |
4467 | ||
4468 | static const char * | |
e142c38c | 4469 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
4470 | { |
4471 | struct die_info *current_die; | |
4472 | const char *name = NULL; | |
4473 | ||
4474 | /* Loop through the extensions until we find a name. */ | |
4475 | ||
4476 | for (current_die = die; | |
4477 | current_die != NULL; | |
e142c38c | 4478 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 4479 | { |
e142c38c | 4480 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
4481 | if (name != NULL) |
4482 | break; | |
4483 | } | |
4484 | ||
4485 | /* Is it an anonymous namespace? */ | |
4486 | ||
4487 | *is_anonymous = (name == NULL); | |
4488 | if (*is_anonymous) | |
4489 | name = "(anonymous namespace)"; | |
4490 | ||
4491 | return name; | |
d9fa45fe DC |
4492 | } |
4493 | ||
c906108c SS |
4494 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
4495 | the user defined type vector. */ | |
4496 | ||
4497 | static void | |
e7c27a73 | 4498 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4499 | { |
e7c27a73 | 4500 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 4501 | struct type *type; |
8b2dbe47 KB |
4502 | struct attribute *attr_byte_size; |
4503 | struct attribute *attr_address_class; | |
4504 | int byte_size, addr_class; | |
c906108c SS |
4505 | |
4506 | if (die->type) | |
4507 | { | |
4508 | return; | |
4509 | } | |
4510 | ||
e7c27a73 | 4511 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 4512 | |
e142c38c | 4513 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
4514 | if (attr_byte_size) |
4515 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 4516 | else |
8b2dbe47 KB |
4517 | byte_size = cu_header->addr_size; |
4518 | ||
e142c38c | 4519 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
4520 | if (attr_address_class) |
4521 | addr_class = DW_UNSND (attr_address_class); | |
4522 | else | |
4523 | addr_class = DW_ADDR_none; | |
4524 | ||
4525 | /* If the pointer size or address class is different than the | |
4526 | default, create a type variant marked as such and set the | |
4527 | length accordingly. */ | |
4528 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 4529 | { |
8b2dbe47 KB |
4530 | if (ADDRESS_CLASS_TYPE_FLAGS_P ()) |
4531 | { | |
4532 | int type_flags; | |
4533 | ||
4534 | type_flags = ADDRESS_CLASS_TYPE_FLAGS (byte_size, addr_class); | |
4535 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); | |
4536 | type = make_type_with_address_space (type, type_flags); | |
4537 | } | |
4538 | else if (TYPE_LENGTH (type) != byte_size) | |
4539 | { | |
e2e0b3e5 | 4540 | complaint (&symfile_complaints, _("invalid pointer size %d"), byte_size); |
8b2dbe47 KB |
4541 | } |
4542 | else { | |
4543 | /* Should we also complain about unhandled address classes? */ | |
4544 | } | |
c906108c | 4545 | } |
8b2dbe47 KB |
4546 | |
4547 | TYPE_LENGTH (type) = byte_size; | |
1c379e20 | 4548 | set_die_type (die, type, cu); |
c906108c SS |
4549 | } |
4550 | ||
4551 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
4552 | the user defined type vector. */ | |
4553 | ||
4554 | static void | |
e7c27a73 | 4555 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4556 | { |
e7c27a73 | 4557 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4558 | struct type *type; |
4559 | struct type *to_type; | |
4560 | struct type *domain; | |
4561 | ||
4562 | if (die->type) | |
4563 | { | |
4564 | return; | |
4565 | } | |
4566 | ||
e7c27a73 DJ |
4567 | to_type = die_type (die, cu); |
4568 | domain = die_containing_type (die, cu); | |
0d5de010 DJ |
4569 | |
4570 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) | |
4571 | type = lookup_methodptr_type (to_type); | |
4572 | else | |
4573 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 4574 | |
1c379e20 | 4575 | set_die_type (die, type, cu); |
c906108c SS |
4576 | } |
4577 | ||
4578 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
4579 | the user defined type vector. */ | |
4580 | ||
4581 | static void | |
e7c27a73 | 4582 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4583 | { |
e7c27a73 | 4584 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4585 | struct type *type; |
4586 | struct attribute *attr; | |
4587 | ||
4588 | if (die->type) | |
4589 | { | |
4590 | return; | |
4591 | } | |
4592 | ||
e7c27a73 | 4593 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 4594 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4595 | if (attr) |
4596 | { | |
4597 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
4598 | } | |
4599 | else | |
4600 | { | |
107d2387 | 4601 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 4602 | } |
1c379e20 | 4603 | set_die_type (die, type, cu); |
c906108c SS |
4604 | } |
4605 | ||
4606 | static void | |
e7c27a73 | 4607 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4608 | { |
090c42a4 JB |
4609 | struct type *base_type; |
4610 | ||
c906108c SS |
4611 | if (die->type) |
4612 | { | |
4613 | return; | |
4614 | } | |
4615 | ||
e7c27a73 | 4616 | base_type = die_type (die, cu); |
1c379e20 DJ |
4617 | set_die_type (die, make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0), |
4618 | cu); | |
c906108c SS |
4619 | } |
4620 | ||
4621 | static void | |
e7c27a73 | 4622 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4623 | { |
090c42a4 JB |
4624 | struct type *base_type; |
4625 | ||
c906108c SS |
4626 | if (die->type) |
4627 | { | |
4628 | return; | |
4629 | } | |
4630 | ||
e7c27a73 | 4631 | base_type = die_type (die, cu); |
1c379e20 DJ |
4632 | set_die_type (die, make_cv_type (TYPE_CONST (base_type), 1, base_type, 0), |
4633 | cu); | |
c906108c SS |
4634 | } |
4635 | ||
4636 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
4637 | the user defined type vector. It isn't really a user defined type, | |
4638 | but it behaves like one, with other DIE's using an AT_user_def_type | |
4639 | attribute to reference it. */ | |
4640 | ||
4641 | static void | |
e7c27a73 | 4642 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4643 | { |
e7c27a73 | 4644 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4645 | struct type *type, *range_type, *index_type, *char_type; |
4646 | struct attribute *attr; | |
4647 | unsigned int length; | |
4648 | ||
4649 | if (die->type) | |
4650 | { | |
4651 | return; | |
4652 | } | |
4653 | ||
e142c38c | 4654 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
4655 | if (attr) |
4656 | { | |
4657 | length = DW_UNSND (attr); | |
4658 | } | |
4659 | else | |
4660 | { | |
b21b22e0 | 4661 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 4662 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
4663 | if (attr) |
4664 | { | |
4665 | length = DW_UNSND (attr); | |
4666 | } | |
4667 | else | |
4668 | { | |
4669 | length = 1; | |
4670 | } | |
c906108c | 4671 | } |
e142c38c | 4672 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 4673 | range_type = create_range_type (NULL, index_type, 1, length); |
e142c38c | 4674 | if (cu->language == language_fortran) |
b21b22e0 PS |
4675 | { |
4676 | /* Need to create a unique string type for bounds | |
4677 | information */ | |
4678 | type = create_string_type (0, range_type); | |
4679 | } | |
4680 | else | |
4681 | { | |
e142c38c | 4682 | char_type = dwarf2_fundamental_type (objfile, FT_CHAR, cu); |
b21b22e0 PS |
4683 | type = create_string_type (char_type, range_type); |
4684 | } | |
1c379e20 | 4685 | set_die_type (die, type, cu); |
c906108c SS |
4686 | } |
4687 | ||
4688 | /* Handle DIES due to C code like: | |
4689 | ||
4690 | struct foo | |
c5aa993b JM |
4691 | { |
4692 | int (*funcp)(int a, long l); | |
4693 | int b; | |
4694 | }; | |
c906108c SS |
4695 | |
4696 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 4697 | */ |
c906108c SS |
4698 | |
4699 | static void | |
e7c27a73 | 4700 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
4701 | { |
4702 | struct type *type; /* Type that this function returns */ | |
4703 | struct type *ftype; /* Function that returns above type */ | |
4704 | struct attribute *attr; | |
4705 | ||
4706 | /* Decode the type that this subroutine returns */ | |
4707 | if (die->type) | |
4708 | { | |
4709 | return; | |
4710 | } | |
e7c27a73 | 4711 | type = die_type (die, cu); |
1326e61b | 4712 | ftype = make_function_type (type, (struct type **) 0); |
c906108c | 4713 | |
987504bb | 4714 | /* All functions in C++ and Java have prototypes. */ |
e142c38c | 4715 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 4716 | if ((attr && (DW_UNSND (attr) != 0)) |
987504bb JJ |
4717 | || cu->language == language_cplus |
4718 | || cu->language == language_java) | |
c906108c SS |
4719 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
4720 | ||
639d11d3 | 4721 | if (die->child != NULL) |
c906108c SS |
4722 | { |
4723 | struct die_info *child_die; | |
4724 | int nparams = 0; | |
4725 | int iparams = 0; | |
4726 | ||
4727 | /* Count the number of parameters. | |
4728 | FIXME: GDB currently ignores vararg functions, but knows about | |
4729 | vararg member functions. */ | |
639d11d3 | 4730 | child_die = die->child; |
c906108c SS |
4731 | while (child_die && child_die->tag) |
4732 | { | |
4733 | if (child_die->tag == DW_TAG_formal_parameter) | |
4734 | nparams++; | |
4735 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
4736 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
4737 | child_die = sibling_die (child_die); | |
4738 | } | |
4739 | ||
4740 | /* Allocate storage for parameters and fill them in. */ | |
4741 | TYPE_NFIELDS (ftype) = nparams; | |
4742 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 4743 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 4744 | |
639d11d3 | 4745 | child_die = die->child; |
c906108c SS |
4746 | while (child_die && child_die->tag) |
4747 | { | |
4748 | if (child_die->tag == DW_TAG_formal_parameter) | |
4749 | { | |
4750 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
4751 | member functions. G++ helps GDB by marking the first |
4752 | parameter for non-static member functions (which is the | |
4753 | this pointer) as artificial. We pass this information | |
4754 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 4755 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
4756 | if (attr) |
4757 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
4758 | else | |
4759 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 4760 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
4761 | iparams++; |
4762 | } | |
4763 | child_die = sibling_die (child_die); | |
4764 | } | |
4765 | } | |
4766 | ||
1c379e20 | 4767 | set_die_type (die, ftype, cu); |
c906108c SS |
4768 | } |
4769 | ||
4770 | static void | |
e7c27a73 | 4771 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4772 | { |
e7c27a73 | 4773 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
4774 | struct attribute *attr; |
4775 | char *name = NULL; | |
c906108c SS |
4776 | |
4777 | if (!die->type) | |
4778 | { | |
e142c38c | 4779 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c | 4780 | if (attr && DW_STRING (attr)) |
2f038fcb FF |
4781 | { |
4782 | name = DW_STRING (attr); | |
4783 | } | |
1c379e20 DJ |
4784 | set_die_type (die, init_type (TYPE_CODE_TYPEDEF, 0, |
4785 | TYPE_FLAG_TARGET_STUB, name, objfile), | |
4786 | cu); | |
e7c27a73 | 4787 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
4788 | } |
4789 | } | |
4790 | ||
4791 | /* Find a representation of a given base type and install | |
4792 | it in the TYPE field of the die. */ | |
4793 | ||
4794 | static void | |
e7c27a73 | 4795 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 4796 | { |
e7c27a73 | 4797 | struct objfile *objfile = cu->objfile; |
c906108c SS |
4798 | struct type *type; |
4799 | struct attribute *attr; | |
4800 | int encoding = 0, size = 0; | |
4801 | ||
4802 | /* If we've already decoded this die, this is a no-op. */ | |
4803 | if (die->type) | |
4804 | { | |
4805 | return; | |
4806 | } | |
4807 | ||
e142c38c | 4808 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
4809 | if (attr) |
4810 | { | |
4811 | encoding = DW_UNSND (attr); | |
4812 | } | |
e142c38c | 4813 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4814 | if (attr) |
4815 | { | |
4816 | size = DW_UNSND (attr); | |
4817 | } | |
e142c38c | 4818 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
4819 | if (attr && DW_STRING (attr)) |
4820 | { | |
4821 | enum type_code code = TYPE_CODE_INT; | |
f5ef7c67 | 4822 | int type_flags = 0; |
c906108c SS |
4823 | |
4824 | switch (encoding) | |
4825 | { | |
4826 | case DW_ATE_address: | |
4827 | /* Turn DW_ATE_address into a void * pointer. */ | |
4828 | code = TYPE_CODE_PTR; | |
f5ef7c67 | 4829 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4830 | break; |
4831 | case DW_ATE_boolean: | |
4832 | code = TYPE_CODE_BOOL; | |
f5ef7c67 | 4833 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4834 | break; |
4835 | case DW_ATE_complex_float: | |
4836 | code = TYPE_CODE_COMPLEX; | |
4837 | break; | |
4838 | case DW_ATE_float: | |
4839 | code = TYPE_CODE_FLT; | |
4840 | break; | |
4841 | case DW_ATE_signed: | |
c906108c SS |
4842 | break; |
4843 | case DW_ATE_unsigned: | |
72019c9c GM |
4844 | type_flags |= TYPE_FLAG_UNSIGNED; |
4845 | break; | |
4846 | case DW_ATE_signed_char: | |
4847 | if (cu->language == language_m2) | |
4848 | code = TYPE_CODE_CHAR; | |
4849 | break; | |
4850 | case DW_ATE_unsigned_char: | |
4851 | if (cu->language == language_m2) | |
4852 | code = TYPE_CODE_CHAR; | |
f5ef7c67 | 4853 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4854 | break; |
4855 | default: | |
e2e0b3e5 | 4856 | complaint (&symfile_complaints, _("unsupported DW_AT_encoding: '%s'"), |
4d3c2250 | 4857 | dwarf_type_encoding_name (encoding)); |
c906108c SS |
4858 | break; |
4859 | } | |
f5ef7c67 | 4860 | type = init_type (code, size, type_flags, DW_STRING (attr), objfile); |
c906108c | 4861 | if (encoding == DW_ATE_address) |
e142c38c DJ |
4862 | TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID, |
4863 | cu); | |
f65ca430 DJ |
4864 | else if (encoding == DW_ATE_complex_float) |
4865 | { | |
4866 | if (size == 32) | |
4867 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4868 | = dwarf2_fundamental_type (objfile, FT_EXT_PREC_FLOAT, cu); |
f65ca430 DJ |
4869 | else if (size == 16) |
4870 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4871 | = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
f65ca430 DJ |
4872 | else if (size == 8) |
4873 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4874 | = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
f65ca430 | 4875 | } |
c906108c SS |
4876 | } |
4877 | else | |
4878 | { | |
e7c27a73 | 4879 | type = dwarf_base_type (encoding, size, cu); |
c906108c | 4880 | } |
1c379e20 | 4881 | set_die_type (die, type, cu); |
c906108c SS |
4882 | } |
4883 | ||
a02abb62 JB |
4884 | /* Read the given DW_AT_subrange DIE. */ |
4885 | ||
4886 | static void | |
4887 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
4888 | { | |
4889 | struct type *base_type; | |
4890 | struct type *range_type; | |
4891 | struct attribute *attr; | |
4892 | int low = 0; | |
4893 | int high = -1; | |
4894 | ||
4895 | /* If we have already decoded this die, then nothing more to do. */ | |
4896 | if (die->type) | |
4897 | return; | |
4898 | ||
4899 | base_type = die_type (die, cu); | |
4900 | if (base_type == NULL) | |
4901 | { | |
4902 | complaint (&symfile_complaints, | |
e2e0b3e5 | 4903 | _("DW_AT_type missing from DW_TAG_subrange_type")); |
a02abb62 JB |
4904 | return; |
4905 | } | |
4906 | ||
4907 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
4908 | base_type = alloc_type (NULL); | |
4909 | ||
e142c38c | 4910 | if (cu->language == language_fortran) |
a02abb62 JB |
4911 | { |
4912 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
4913 | low = 1; | |
4914 | } | |
4915 | ||
dd5e6932 DJ |
4916 | /* FIXME: For variable sized arrays either of these could be |
4917 | a variable rather than a constant value. We'll allow it, | |
4918 | but we don't know how to handle it. */ | |
e142c38c | 4919 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
4920 | if (attr) |
4921 | low = dwarf2_get_attr_constant_value (attr, 0); | |
4922 | ||
e142c38c | 4923 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
4924 | if (attr) |
4925 | { | |
4926 | if (attr->form == DW_FORM_block1) | |
4927 | { | |
4928 | /* GCC encodes arrays with unspecified or dynamic length | |
4929 | with a DW_FORM_block1 attribute. | |
4930 | FIXME: GDB does not yet know how to handle dynamic | |
4931 | arrays properly, treat them as arrays with unspecified | |
4932 | length for now. | |
4933 | ||
4934 | FIXME: jimb/2003-09-22: GDB does not really know | |
4935 | how to handle arrays of unspecified length | |
4936 | either; we just represent them as zero-length | |
4937 | arrays. Choose an appropriate upper bound given | |
4938 | the lower bound we've computed above. */ | |
4939 | high = low - 1; | |
4940 | } | |
4941 | else | |
4942 | high = dwarf2_get_attr_constant_value (attr, 1); | |
4943 | } | |
4944 | ||
4945 | range_type = create_range_type (NULL, base_type, low, high); | |
4946 | ||
e142c38c | 4947 | attr = dwarf2_attr (die, DW_AT_name, cu); |
a02abb62 JB |
4948 | if (attr && DW_STRING (attr)) |
4949 | TYPE_NAME (range_type) = DW_STRING (attr); | |
4950 | ||
e142c38c | 4951 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
4952 | if (attr) |
4953 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
4954 | ||
1c379e20 | 4955 | set_die_type (die, range_type, cu); |
a02abb62 JB |
4956 | } |
4957 | ||
81a17f79 JB |
4958 | static void |
4959 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) | |
4960 | { | |
4961 | struct type *type; | |
4962 | struct attribute *attr; | |
4963 | ||
4964 | if (die->type) | |
4965 | return; | |
4966 | ||
4967 | /* For now, we only support the C meaning of an unspecified type: void. */ | |
4968 | ||
4969 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
4970 | type = init_type (TYPE_CODE_VOID, 0, 0, attr ? DW_STRING (attr) : "", | |
4971 | cu->objfile); | |
4972 | ||
4973 | set_die_type (die, type, cu); | |
4974 | } | |
a02abb62 | 4975 | |
c906108c SS |
4976 | /* Read a whole compilation unit into a linked list of dies. */ |
4977 | ||
f9aca02d | 4978 | static struct die_info * |
fe1b8b76 | 4979 | read_comp_unit (gdb_byte *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4980 | { |
e7c27a73 | 4981 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
4982 | } |
4983 | ||
4984 | /* Read a single die and all its descendents. Set the die's sibling | |
4985 | field to NULL; set other fields in the die correctly, and set all | |
4986 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
4987 | location of the info_ptr after reading all of those dies. PARENT | |
4988 | is the parent of the die in question. */ | |
4989 | ||
4990 | static struct die_info * | |
fe1b8b76 | 4991 | read_die_and_children (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 4992 | struct dwarf2_cu *cu, |
fe1b8b76 | 4993 | gdb_byte **new_info_ptr, |
639d11d3 DC |
4994 | struct die_info *parent) |
4995 | { | |
4996 | struct die_info *die; | |
fe1b8b76 | 4997 | gdb_byte *cur_ptr; |
639d11d3 DC |
4998 | int has_children; |
4999 | ||
e7c27a73 | 5000 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
10b3939b | 5001 | store_in_ref_table (die->offset, die, cu); |
639d11d3 DC |
5002 | |
5003 | if (has_children) | |
5004 | { | |
e7c27a73 | 5005 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
5006 | new_info_ptr, die); |
5007 | } | |
5008 | else | |
5009 | { | |
5010 | die->child = NULL; | |
5011 | *new_info_ptr = cur_ptr; | |
5012 | } | |
5013 | ||
5014 | die->sibling = NULL; | |
5015 | die->parent = parent; | |
5016 | return die; | |
5017 | } | |
5018 | ||
5019 | /* Read a die, all of its descendents, and all of its siblings; set | |
5020 | all of the fields of all of the dies correctly. Arguments are as | |
5021 | in read_die_and_children. */ | |
5022 | ||
5023 | static struct die_info * | |
fe1b8b76 | 5024 | read_die_and_siblings (gdb_byte *info_ptr, bfd *abfd, |
e7c27a73 | 5025 | struct dwarf2_cu *cu, |
fe1b8b76 | 5026 | gdb_byte **new_info_ptr, |
639d11d3 DC |
5027 | struct die_info *parent) |
5028 | { | |
5029 | struct die_info *first_die, *last_sibling; | |
fe1b8b76 | 5030 | gdb_byte *cur_ptr; |
639d11d3 | 5031 | |
c906108c | 5032 | cur_ptr = info_ptr; |
639d11d3 DC |
5033 | first_die = last_sibling = NULL; |
5034 | ||
5035 | while (1) | |
c906108c | 5036 | { |
639d11d3 | 5037 | struct die_info *die |
e7c27a73 | 5038 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
5039 | |
5040 | if (!first_die) | |
c906108c | 5041 | { |
639d11d3 | 5042 | first_die = die; |
c906108c | 5043 | } |
639d11d3 | 5044 | else |
c906108c | 5045 | { |
639d11d3 | 5046 | last_sibling->sibling = die; |
c906108c SS |
5047 | } |
5048 | ||
639d11d3 | 5049 | if (die->tag == 0) |
c906108c | 5050 | { |
639d11d3 DC |
5051 | *new_info_ptr = cur_ptr; |
5052 | return first_die; | |
c906108c SS |
5053 | } |
5054 | else | |
5055 | { | |
639d11d3 | 5056 | last_sibling = die; |
c906108c SS |
5057 | } |
5058 | } | |
c906108c SS |
5059 | } |
5060 | ||
5061 | /* Free a linked list of dies. */ | |
5062 | ||
5063 | static void | |
fba45db2 | 5064 | free_die_list (struct die_info *dies) |
c906108c SS |
5065 | { |
5066 | struct die_info *die, *next; | |
5067 | ||
5068 | die = dies; | |
5069 | while (die) | |
5070 | { | |
639d11d3 DC |
5071 | if (die->child != NULL) |
5072 | free_die_list (die->child); | |
5073 | next = die->sibling; | |
b8c9b27d KB |
5074 | xfree (die->attrs); |
5075 | xfree (die); | |
c906108c SS |
5076 | die = next; |
5077 | } | |
5078 | } | |
5079 | ||
5080 | /* Read the contents of the section at OFFSET and of size SIZE from the | |
8b92e4d5 | 5081 | object file specified by OBJFILE into the objfile_obstack and return it. */ |
c906108c | 5082 | |
fe1b8b76 | 5083 | gdb_byte * |
188dd5d6 | 5084 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
5085 | { |
5086 | bfd *abfd = objfile->obfd; | |
fe1b8b76 | 5087 | gdb_byte *buf, *retbuf; |
2c500098 | 5088 | bfd_size_type size = bfd_get_section_size (sectp); |
c906108c SS |
5089 | |
5090 | if (size == 0) | |
5091 | return NULL; | |
5092 | ||
fe1b8b76 JB |
5093 | buf = obstack_alloc (&objfile->objfile_obstack, size); |
5094 | retbuf = symfile_relocate_debug_section (abfd, sectp, buf); | |
086df311 DJ |
5095 | if (retbuf != NULL) |
5096 | return retbuf; | |
5097 | ||
188dd5d6 DJ |
5098 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
5099 | || bfd_bread (buf, size, abfd) != size) | |
8a3fe4f8 | 5100 | error (_("Dwarf Error: Can't read DWARF data from '%s'"), |
188dd5d6 DJ |
5101 | bfd_get_filename (abfd)); |
5102 | ||
c906108c SS |
5103 | return buf; |
5104 | } | |
5105 | ||
5106 | /* In DWARF version 2, the description of the debugging information is | |
5107 | stored in a separate .debug_abbrev section. Before we read any | |
5108 | dies from a section we read in all abbreviations and install them | |
72bf9492 DJ |
5109 | in a hash table. This function also sets flags in CU describing |
5110 | the data found in the abbrev table. */ | |
c906108c SS |
5111 | |
5112 | static void | |
e7c27a73 | 5113 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 5114 | { |
e7c27a73 | 5115 | struct comp_unit_head *cu_header = &cu->header; |
fe1b8b76 | 5116 | gdb_byte *abbrev_ptr; |
c906108c SS |
5117 | struct abbrev_info *cur_abbrev; |
5118 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
5119 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
5120 | struct attr_abbrev *cur_attrs; |
5121 | unsigned int allocated_attrs; | |
c906108c | 5122 | |
57349743 | 5123 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
5124 | obstack_init (&cu->abbrev_obstack); |
5125 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
5126 | (ABBREV_HASH_SIZE | |
5127 | * sizeof (struct abbrev_info *))); | |
5128 | memset (cu->dwarf2_abbrevs, 0, | |
5129 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 5130 | |
6502dd73 | 5131 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
5132 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5133 | abbrev_ptr += bytes_read; | |
5134 | ||
f3dd6933 DJ |
5135 | allocated_attrs = ATTR_ALLOC_CHUNK; |
5136 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
5137 | ||
c906108c SS |
5138 | /* loop until we reach an abbrev number of 0 */ |
5139 | while (abbrev_number) | |
5140 | { | |
f3dd6933 | 5141 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
5142 | |
5143 | /* read in abbrev header */ | |
5144 | cur_abbrev->number = abbrev_number; | |
5145 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5146 | abbrev_ptr += bytes_read; | |
5147 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
5148 | abbrev_ptr += 1; | |
5149 | ||
72bf9492 DJ |
5150 | if (cur_abbrev->tag == DW_TAG_namespace) |
5151 | cu->has_namespace_info = 1; | |
5152 | ||
c906108c SS |
5153 | /* now read in declarations */ |
5154 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5155 | abbrev_ptr += bytes_read; | |
5156 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5157 | abbrev_ptr += bytes_read; | |
5158 | while (abbrev_name) | |
5159 | { | |
f3dd6933 | 5160 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 5161 | { |
f3dd6933 DJ |
5162 | allocated_attrs += ATTR_ALLOC_CHUNK; |
5163 | cur_attrs | |
5164 | = xrealloc (cur_attrs, (allocated_attrs | |
5165 | * sizeof (struct attr_abbrev))); | |
c906108c | 5166 | } |
ae038cb0 DJ |
5167 | |
5168 | /* Record whether this compilation unit might have | |
5169 | inter-compilation-unit references. If we don't know what form | |
5170 | this attribute will have, then it might potentially be a | |
5171 | DW_FORM_ref_addr, so we conservatively expect inter-CU | |
5172 | references. */ | |
5173 | ||
5174 | if (abbrev_form == DW_FORM_ref_addr | |
5175 | || abbrev_form == DW_FORM_indirect) | |
5176 | cu->has_form_ref_addr = 1; | |
5177 | ||
f3dd6933 DJ |
5178 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
5179 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
5180 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
5181 | abbrev_ptr += bytes_read; | |
5182 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5183 | abbrev_ptr += bytes_read; | |
5184 | } | |
5185 | ||
f3dd6933 DJ |
5186 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
5187 | (cur_abbrev->num_attrs | |
5188 | * sizeof (struct attr_abbrev))); | |
5189 | memcpy (cur_abbrev->attrs, cur_attrs, | |
5190 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
5191 | ||
c906108c | 5192 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
5193 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
5194 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
5195 | |
5196 | /* Get next abbreviation. | |
5197 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
5198 | always properly terminated with an abbrev number of 0. |
5199 | Exit loop if we encounter an abbreviation which we have | |
5200 | already read (which means we are about to read the abbreviations | |
5201 | for the next compile unit) or if the end of the abbreviation | |
5202 | table is reached. */ | |
6502dd73 DJ |
5203 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev_buffer) |
5204 | >= dwarf2_per_objfile->abbrev_size) | |
c906108c SS |
5205 | break; |
5206 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
5207 | abbrev_ptr += bytes_read; | |
e7c27a73 | 5208 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
5209 | break; |
5210 | } | |
f3dd6933 DJ |
5211 | |
5212 | xfree (cur_attrs); | |
c906108c SS |
5213 | } |
5214 | ||
f3dd6933 | 5215 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 5216 | |
c906108c | 5217 | static void |
f3dd6933 | 5218 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 5219 | { |
f3dd6933 | 5220 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 5221 | |
f3dd6933 DJ |
5222 | obstack_free (&cu->abbrev_obstack, NULL); |
5223 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
5224 | } |
5225 | ||
5226 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
5227 | ||
5228 | static struct abbrev_info * | |
e7c27a73 | 5229 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
5230 | { |
5231 | unsigned int hash_number; | |
5232 | struct abbrev_info *abbrev; | |
5233 | ||
5234 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 5235 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
5236 | |
5237 | while (abbrev) | |
5238 | { | |
5239 | if (abbrev->number == number) | |
5240 | return abbrev; | |
5241 | else | |
5242 | abbrev = abbrev->next; | |
5243 | } | |
5244 | return NULL; | |
5245 | } | |
5246 | ||
72bf9492 DJ |
5247 | /* Returns nonzero if TAG represents a type that we might generate a partial |
5248 | symbol for. */ | |
5249 | ||
5250 | static int | |
5251 | is_type_tag_for_partial (int tag) | |
5252 | { | |
5253 | switch (tag) | |
5254 | { | |
5255 | #if 0 | |
5256 | /* Some types that would be reasonable to generate partial symbols for, | |
5257 | that we don't at present. */ | |
5258 | case DW_TAG_array_type: | |
5259 | case DW_TAG_file_type: | |
5260 | case DW_TAG_ptr_to_member_type: | |
5261 | case DW_TAG_set_type: | |
5262 | case DW_TAG_string_type: | |
5263 | case DW_TAG_subroutine_type: | |
5264 | #endif | |
5265 | case DW_TAG_base_type: | |
5266 | case DW_TAG_class_type: | |
5267 | case DW_TAG_enumeration_type: | |
5268 | case DW_TAG_structure_type: | |
5269 | case DW_TAG_subrange_type: | |
5270 | case DW_TAG_typedef: | |
5271 | case DW_TAG_union_type: | |
5272 | return 1; | |
5273 | default: | |
5274 | return 0; | |
5275 | } | |
5276 | } | |
5277 | ||
5278 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
5279 | ||
5280 | static struct partial_die_info * | |
fe1b8b76 | 5281 | load_partial_dies (bfd *abfd, gdb_byte *info_ptr, int building_psymtab, |
72bf9492 DJ |
5282 | struct dwarf2_cu *cu) |
5283 | { | |
5284 | struct partial_die_info *part_die; | |
5285 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; | |
5286 | struct abbrev_info *abbrev; | |
5287 | unsigned int bytes_read; | |
5afb4e99 | 5288 | unsigned int load_all = 0; |
72bf9492 DJ |
5289 | |
5290 | int nesting_level = 1; | |
5291 | ||
5292 | parent_die = NULL; | |
5293 | last_die = NULL; | |
5294 | ||
5afb4e99 DJ |
5295 | if (cu->per_cu && cu->per_cu->load_all_dies) |
5296 | load_all = 1; | |
5297 | ||
72bf9492 DJ |
5298 | cu->partial_dies |
5299 | = htab_create_alloc_ex (cu->header.length / 12, | |
5300 | partial_die_hash, | |
5301 | partial_die_eq, | |
5302 | NULL, | |
5303 | &cu->comp_unit_obstack, | |
5304 | hashtab_obstack_allocate, | |
5305 | dummy_obstack_deallocate); | |
5306 | ||
5307 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5308 | sizeof (struct partial_die_info)); | |
5309 | ||
5310 | while (1) | |
5311 | { | |
5312 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
5313 | ||
5314 | /* A NULL abbrev means the end of a series of children. */ | |
5315 | if (abbrev == NULL) | |
5316 | { | |
5317 | if (--nesting_level == 0) | |
5318 | { | |
5319 | /* PART_DIE was probably the last thing allocated on the | |
5320 | comp_unit_obstack, so we could call obstack_free | |
5321 | here. We don't do that because the waste is small, | |
5322 | and will be cleaned up when we're done with this | |
5323 | compilation unit. This way, we're also more robust | |
5324 | against other users of the comp_unit_obstack. */ | |
5325 | return first_die; | |
5326 | } | |
5327 | info_ptr += bytes_read; | |
5328 | last_die = parent_die; | |
5329 | parent_die = parent_die->die_parent; | |
5330 | continue; | |
5331 | } | |
5332 | ||
5afb4e99 DJ |
5333 | /* Check whether this DIE is interesting enough to save. Normally |
5334 | we would not be interested in members here, but there may be | |
5335 | later variables referencing them via DW_AT_specification (for | |
5336 | static members). */ | |
5337 | if (!load_all | |
5338 | && !is_type_tag_for_partial (abbrev->tag) | |
72bf9492 DJ |
5339 | && abbrev->tag != DW_TAG_enumerator |
5340 | && abbrev->tag != DW_TAG_subprogram | |
5341 | && abbrev->tag != DW_TAG_variable | |
5afb4e99 DJ |
5342 | && abbrev->tag != DW_TAG_namespace |
5343 | && abbrev->tag != DW_TAG_member) | |
72bf9492 DJ |
5344 | { |
5345 | /* Otherwise we skip to the next sibling, if any. */ | |
5346 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
5347 | continue; | |
5348 | } | |
5349 | ||
5350 | info_ptr = read_partial_die (part_die, abbrev, bytes_read, | |
5351 | abfd, info_ptr, cu); | |
5352 | ||
5353 | /* This two-pass algorithm for processing partial symbols has a | |
5354 | high cost in cache pressure. Thus, handle some simple cases | |
5355 | here which cover the majority of C partial symbols. DIEs | |
5356 | which neither have specification tags in them, nor could have | |
5357 | specification tags elsewhere pointing at them, can simply be | |
5358 | processed and discarded. | |
5359 | ||
5360 | This segment is also optional; scan_partial_symbols and | |
5361 | add_partial_symbol will handle these DIEs if we chain | |
5362 | them in normally. When compilers which do not emit large | |
5363 | quantities of duplicate debug information are more common, | |
5364 | this code can probably be removed. */ | |
5365 | ||
5366 | /* Any complete simple types at the top level (pretty much all | |
5367 | of them, for a language without namespaces), can be processed | |
5368 | directly. */ | |
5369 | if (parent_die == NULL | |
5370 | && part_die->has_specification == 0 | |
5371 | && part_die->is_declaration == 0 | |
5372 | && (part_die->tag == DW_TAG_typedef | |
5373 | || part_die->tag == DW_TAG_base_type | |
5374 | || part_die->tag == DW_TAG_subrange_type)) | |
5375 | { | |
5376 | if (building_psymtab && part_die->name != NULL) | |
5377 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5378 | VAR_DOMAIN, LOC_TYPEDEF, | |
5379 | &cu->objfile->static_psymbols, | |
5380 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5381 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5382 | continue; | |
5383 | } | |
5384 | ||
5385 | /* If we're at the second level, and we're an enumerator, and | |
5386 | our parent has no specification (meaning possibly lives in a | |
5387 | namespace elsewhere), then we can add the partial symbol now | |
5388 | instead of queueing it. */ | |
5389 | if (part_die->tag == DW_TAG_enumerator | |
5390 | && parent_die != NULL | |
5391 | && parent_die->die_parent == NULL | |
5392 | && parent_die->tag == DW_TAG_enumeration_type | |
5393 | && parent_die->has_specification == 0) | |
5394 | { | |
5395 | if (part_die->name == NULL) | |
e2e0b3e5 | 5396 | complaint (&symfile_complaints, _("malformed enumerator DIE ignored")); |
72bf9492 DJ |
5397 | else if (building_psymtab) |
5398 | add_psymbol_to_list (part_die->name, strlen (part_die->name), | |
5399 | VAR_DOMAIN, LOC_CONST, | |
987504bb JJ |
5400 | (cu->language == language_cplus |
5401 | || cu->language == language_java) | |
72bf9492 DJ |
5402 | ? &cu->objfile->global_psymbols |
5403 | : &cu->objfile->static_psymbols, | |
5404 | 0, (CORE_ADDR) 0, cu->language, cu->objfile); | |
5405 | ||
5406 | info_ptr = locate_pdi_sibling (part_die, info_ptr, abfd, cu); | |
5407 | continue; | |
5408 | } | |
5409 | ||
5410 | /* We'll save this DIE so link it in. */ | |
5411 | part_die->die_parent = parent_die; | |
5412 | part_die->die_sibling = NULL; | |
5413 | part_die->die_child = NULL; | |
5414 | ||
5415 | if (last_die && last_die == parent_die) | |
5416 | last_die->die_child = part_die; | |
5417 | else if (last_die) | |
5418 | last_die->die_sibling = part_die; | |
5419 | ||
5420 | last_die = part_die; | |
5421 | ||
5422 | if (first_die == NULL) | |
5423 | first_die = part_die; | |
5424 | ||
5425 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
5426 | find interesting need to be in the hash table, because we | |
5427 | also have the parent/sibling/child chains; only those that we | |
5428 | might refer to by offset later during partial symbol reading. | |
5429 | ||
5430 | For now this means things that might have be the target of a | |
5431 | DW_AT_specification, DW_AT_abstract_origin, or | |
5432 | DW_AT_extension. DW_AT_extension will refer only to | |
5433 | namespaces; DW_AT_abstract_origin refers to functions (and | |
5434 | many things under the function DIE, but we do not recurse | |
5435 | into function DIEs during partial symbol reading) and | |
5436 | possibly variables as well; DW_AT_specification refers to | |
5437 | declarations. Declarations ought to have the DW_AT_declaration | |
5438 | flag. It happens that GCC forgets to put it in sometimes, but | |
5439 | only for functions, not for types. | |
5440 | ||
5441 | Adding more things than necessary to the hash table is harmless | |
5442 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
5443 | wasted time in find_partial_die, when we reread the compilation |
5444 | unit with load_all_dies set. */ | |
72bf9492 | 5445 | |
5afb4e99 DJ |
5446 | if (load_all |
5447 | || abbrev->tag == DW_TAG_subprogram | |
72bf9492 DJ |
5448 | || abbrev->tag == DW_TAG_variable |
5449 | || abbrev->tag == DW_TAG_namespace | |
5450 | || part_die->is_declaration) | |
5451 | { | |
5452 | void **slot; | |
5453 | ||
5454 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
5455 | part_die->offset, INSERT); | |
5456 | *slot = part_die; | |
5457 | } | |
5458 | ||
5459 | part_die = obstack_alloc (&cu->comp_unit_obstack, | |
5460 | sizeof (struct partial_die_info)); | |
5461 | ||
5462 | /* For some DIEs we want to follow their children (if any). For C | |
5463 | we have no reason to follow the children of structures; for other | |
5464 | languages we have to, both so that we can get at method physnames | |
5465 | to infer fully qualified class names, and for DW_AT_specification. */ | |
5466 | if (last_die->has_children | |
5afb4e99 DJ |
5467 | && (load_all |
5468 | || last_die->tag == DW_TAG_namespace | |
72bf9492 DJ |
5469 | || last_die->tag == DW_TAG_enumeration_type |
5470 | || (cu->language != language_c | |
5471 | && (last_die->tag == DW_TAG_class_type | |
5472 | || last_die->tag == DW_TAG_structure_type | |
5473 | || last_die->tag == DW_TAG_union_type)))) | |
5474 | { | |
5475 | nesting_level++; | |
5476 | parent_die = last_die; | |
5477 | continue; | |
5478 | } | |
5479 | ||
5480 | /* Otherwise we skip to the next sibling, if any. */ | |
5481 | info_ptr = locate_pdi_sibling (last_die, info_ptr, abfd, cu); | |
5482 | ||
5483 | /* Back to the top, do it again. */ | |
5484 | } | |
5485 | } | |
5486 | ||
c906108c SS |
5487 | /* Read a minimal amount of information into the minimal die structure. */ |
5488 | ||
fe1b8b76 | 5489 | static gdb_byte * |
72bf9492 DJ |
5490 | read_partial_die (struct partial_die_info *part_die, |
5491 | struct abbrev_info *abbrev, | |
5492 | unsigned int abbrev_len, bfd *abfd, | |
fe1b8b76 | 5493 | gdb_byte *info_ptr, struct dwarf2_cu *cu) |
c906108c | 5494 | { |
72bf9492 | 5495 | unsigned int bytes_read, i; |
c906108c | 5496 | struct attribute attr; |
c5aa993b | 5497 | int has_low_pc_attr = 0; |
c906108c SS |
5498 | int has_high_pc_attr = 0; |
5499 | ||
72bf9492 | 5500 | memset (part_die, 0, sizeof (struct partial_die_info)); |
c906108c | 5501 | |
6502dd73 | 5502 | part_die->offset = info_ptr - dwarf2_per_objfile->info_buffer; |
72bf9492 DJ |
5503 | |
5504 | info_ptr += abbrev_len; | |
5505 | ||
5506 | if (abbrev == NULL) | |
5507 | return info_ptr; | |
5508 | ||
c906108c SS |
5509 | part_die->tag = abbrev->tag; |
5510 | part_die->has_children = abbrev->has_children; | |
c906108c SS |
5511 | |
5512 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5513 | { | |
e7c27a73 | 5514 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
5515 | |
5516 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 5517 | partial symbol table. */ |
c906108c SS |
5518 | switch (attr.name) |
5519 | { | |
5520 | case DW_AT_name: | |
5521 | ||
5522 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
5523 | if (part_die->name == NULL) | |
5524 | part_die->name = DW_STRING (&attr); | |
5525 | break; | |
57c22c6c BR |
5526 | case DW_AT_comp_dir: |
5527 | if (part_die->dirname == NULL) | |
5528 | part_die->dirname = DW_STRING (&attr); | |
5529 | break; | |
c906108c SS |
5530 | case DW_AT_MIPS_linkage_name: |
5531 | part_die->name = DW_STRING (&attr); | |
5532 | break; | |
5533 | case DW_AT_low_pc: | |
5534 | has_low_pc_attr = 1; | |
5535 | part_die->lowpc = DW_ADDR (&attr); | |
5536 | break; | |
5537 | case DW_AT_high_pc: | |
5538 | has_high_pc_attr = 1; | |
5539 | part_die->highpc = DW_ADDR (&attr); | |
5540 | break; | |
5541 | case DW_AT_location: | |
8e19ed76 PS |
5542 | /* Support the .debug_loc offsets */ |
5543 | if (attr_form_is_block (&attr)) | |
5544 | { | |
5545 | part_die->locdesc = DW_BLOCK (&attr); | |
5546 | } | |
5547 | else if (attr.form == DW_FORM_data4 || attr.form == DW_FORM_data8) | |
5548 | { | |
4d3c2250 | 5549 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
5550 | } |
5551 | else | |
5552 | { | |
4d3c2250 KB |
5553 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
5554 | "partial symbol information"); | |
8e19ed76 | 5555 | } |
c906108c SS |
5556 | break; |
5557 | case DW_AT_language: | |
5558 | part_die->language = DW_UNSND (&attr); | |
5559 | break; | |
5560 | case DW_AT_external: | |
5561 | part_die->is_external = DW_UNSND (&attr); | |
5562 | break; | |
5563 | case DW_AT_declaration: | |
5564 | part_die->is_declaration = DW_UNSND (&attr); | |
5565 | break; | |
5566 | case DW_AT_type: | |
5567 | part_die->has_type = 1; | |
5568 | break; | |
5569 | case DW_AT_abstract_origin: | |
5570 | case DW_AT_specification: | |
72bf9492 DJ |
5571 | case DW_AT_extension: |
5572 | part_die->has_specification = 1; | |
5573 | part_die->spec_offset = dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c SS |
5574 | break; |
5575 | case DW_AT_sibling: | |
5576 | /* Ignore absolute siblings, they might point outside of | |
5577 | the current compile unit. */ | |
5578 | if (attr.form == DW_FORM_ref_addr) | |
e2e0b3e5 | 5579 | complaint (&symfile_complaints, _("ignoring absolute DW_AT_sibling")); |
c906108c | 5580 | else |
6502dd73 DJ |
5581 | part_die->sibling = dwarf2_per_objfile->info_buffer |
5582 | + dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c | 5583 | break; |
aaa75496 JB |
5584 | case DW_AT_stmt_list: |
5585 | part_die->has_stmt_list = 1; | |
5586 | part_die->line_offset = DW_UNSND (&attr); | |
5587 | break; | |
fa4028e9 JB |
5588 | case DW_AT_byte_size: |
5589 | part_die->has_byte_size = 1; | |
5590 | break; | |
c906108c SS |
5591 | default: |
5592 | break; | |
5593 | } | |
5594 | } | |
5595 | ||
c906108c SS |
5596 | /* When using the GNU linker, .gnu.linkonce. sections are used to |
5597 | eliminate duplicate copies of functions and vtables and such. | |
5598 | The linker will arbitrarily choose one and discard the others. | |
5599 | The AT_*_pc values for such functions refer to local labels in | |
5600 | these sections. If the section from that file was discarded, the | |
5601 | labels are not in the output, so the relocs get a value of 0. | |
5602 | If this is a discarded function, mark the pc bounds as invalid, | |
5603 | so that GDB will ignore it. */ | |
5604 | if (has_low_pc_attr && has_high_pc_attr | |
5605 | && part_die->lowpc < part_die->highpc | |
5606 | && (part_die->lowpc != 0 | |
72dca2f5 | 5607 | || dwarf2_per_objfile->has_section_at_zero)) |
0b010bcc | 5608 | part_die->has_pc_info = 1; |
c906108c SS |
5609 | return info_ptr; |
5610 | } | |
5611 | ||
72bf9492 DJ |
5612 | /* Find a cached partial DIE at OFFSET in CU. */ |
5613 | ||
5614 | static struct partial_die_info * | |
5615 | find_partial_die_in_comp_unit (unsigned long offset, struct dwarf2_cu *cu) | |
5616 | { | |
5617 | struct partial_die_info *lookup_die = NULL; | |
5618 | struct partial_die_info part_die; | |
5619 | ||
5620 | part_die.offset = offset; | |
5621 | lookup_die = htab_find_with_hash (cu->partial_dies, &part_die, offset); | |
5622 | ||
72bf9492 DJ |
5623 | return lookup_die; |
5624 | } | |
5625 | ||
5626 | /* Find a partial DIE at OFFSET, which may or may not be in CU. */ | |
5627 | ||
5628 | static struct partial_die_info * | |
10b3939b | 5629 | find_partial_die (unsigned long offset, struct dwarf2_cu *cu) |
72bf9492 | 5630 | { |
5afb4e99 DJ |
5631 | struct dwarf2_per_cu_data *per_cu = NULL; |
5632 | struct partial_die_info *pd = NULL; | |
72bf9492 DJ |
5633 | |
5634 | if (offset >= cu->header.offset | |
5635 | && offset < cu->header.offset + cu->header.length) | |
5afb4e99 DJ |
5636 | { |
5637 | pd = find_partial_die_in_comp_unit (offset, cu); | |
5638 | if (pd != NULL) | |
5639 | return pd; | |
5640 | } | |
72bf9492 | 5641 | |
ae038cb0 DJ |
5642 | per_cu = dwarf2_find_containing_comp_unit (offset, cu->objfile); |
5643 | ||
ae038cb0 DJ |
5644 | if (per_cu->cu == NULL) |
5645 | { | |
5646 | load_comp_unit (per_cu, cu->objfile); | |
5647 | per_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
5648 | dwarf2_per_objfile->read_in_chain = per_cu; | |
5649 | } | |
5650 | ||
5651 | per_cu->cu->last_used = 0; | |
5afb4e99 DJ |
5652 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); |
5653 | ||
5654 | if (pd == NULL && per_cu->load_all_dies == 0) | |
5655 | { | |
5656 | struct cleanup *back_to; | |
5657 | struct partial_die_info comp_unit_die; | |
5658 | struct abbrev_info *abbrev; | |
5659 | unsigned int bytes_read; | |
5660 | char *info_ptr; | |
5661 | ||
5662 | per_cu->load_all_dies = 1; | |
5663 | ||
5664 | /* Re-read the DIEs. */ | |
5665 | back_to = make_cleanup (null_cleanup, 0); | |
5666 | if (per_cu->cu->dwarf2_abbrevs == NULL) | |
5667 | { | |
5668 | dwarf2_read_abbrevs (per_cu->cu->objfile->obfd, per_cu->cu); | |
5669 | back_to = make_cleanup (dwarf2_free_abbrev_table, per_cu->cu); | |
5670 | } | |
5671 | info_ptr = per_cu->cu->header.first_die_ptr; | |
5672 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, per_cu->cu); | |
5673 | info_ptr = read_partial_die (&comp_unit_die, abbrev, bytes_read, | |
5674 | per_cu->cu->objfile->obfd, info_ptr, | |
5675 | per_cu->cu); | |
5676 | if (comp_unit_die.has_children) | |
5677 | load_partial_dies (per_cu->cu->objfile->obfd, info_ptr, 0, per_cu->cu); | |
5678 | do_cleanups (back_to); | |
5679 | ||
5680 | pd = find_partial_die_in_comp_unit (offset, per_cu->cu); | |
5681 | } | |
5682 | ||
5683 | if (pd == NULL) | |
5684 | internal_error (__FILE__, __LINE__, | |
5685 | _("could not find partial DIE 0x%lx in cache [from module %s]\n"), | |
5686 | offset, bfd_get_filename (cu->objfile->obfd)); | |
5687 | return pd; | |
72bf9492 DJ |
5688 | } |
5689 | ||
5690 | /* Adjust PART_DIE before generating a symbol for it. This function | |
5691 | may set the is_external flag or change the DIE's name. */ | |
5692 | ||
5693 | static void | |
5694 | fixup_partial_die (struct partial_die_info *part_die, | |
5695 | struct dwarf2_cu *cu) | |
5696 | { | |
5697 | /* If we found a reference attribute and the DIE has no name, try | |
5698 | to find a name in the referred to DIE. */ | |
5699 | ||
5700 | if (part_die->name == NULL && part_die->has_specification) | |
5701 | { | |
5702 | struct partial_die_info *spec_die; | |
72bf9492 | 5703 | |
10b3939b | 5704 | spec_die = find_partial_die (part_die->spec_offset, cu); |
72bf9492 | 5705 | |
10b3939b | 5706 | fixup_partial_die (spec_die, cu); |
72bf9492 DJ |
5707 | |
5708 | if (spec_die->name) | |
5709 | { | |
5710 | part_die->name = spec_die->name; | |
5711 | ||
5712 | /* Copy DW_AT_external attribute if it is set. */ | |
5713 | if (spec_die->is_external) | |
5714 | part_die->is_external = spec_die->is_external; | |
5715 | } | |
5716 | } | |
5717 | ||
5718 | /* Set default names for some unnamed DIEs. */ | |
5719 | if (part_die->name == NULL && (part_die->tag == DW_TAG_structure_type | |
5720 | || part_die->tag == DW_TAG_class_type)) | |
5721 | part_die->name = "(anonymous class)"; | |
5722 | ||
5723 | if (part_die->name == NULL && part_die->tag == DW_TAG_namespace) | |
5724 | part_die->name = "(anonymous namespace)"; | |
5725 | ||
5726 | if (part_die->tag == DW_TAG_structure_type | |
5727 | || part_die->tag == DW_TAG_class_type | |
5728 | || part_die->tag == DW_TAG_union_type) | |
5729 | guess_structure_name (part_die, cu); | |
5730 | } | |
5731 | ||
639d11d3 DC |
5732 | /* Read the die from the .debug_info section buffer. Set DIEP to |
5733 | point to a newly allocated die with its information, except for its | |
5734 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
5735 | whether the die has children or not. */ | |
c906108c | 5736 | |
fe1b8b76 JB |
5737 | static gdb_byte * |
5738 | read_full_die (struct die_info **diep, bfd *abfd, gdb_byte *info_ptr, | |
e7c27a73 | 5739 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
5740 | { |
5741 | unsigned int abbrev_number, bytes_read, i, offset; | |
5742 | struct abbrev_info *abbrev; | |
5743 | struct die_info *die; | |
5744 | ||
6502dd73 | 5745 | offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
5746 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5747 | info_ptr += bytes_read; | |
5748 | if (!abbrev_number) | |
5749 | { | |
5750 | die = dwarf_alloc_die (); | |
5751 | die->tag = 0; | |
5752 | die->abbrev = abbrev_number; | |
5753 | die->type = NULL; | |
5754 | *diep = die; | |
639d11d3 | 5755 | *has_children = 0; |
c906108c SS |
5756 | return info_ptr; |
5757 | } | |
5758 | ||
e7c27a73 | 5759 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
5760 | if (!abbrev) |
5761 | { | |
8a3fe4f8 | 5762 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
72bf9492 | 5763 | abbrev_number, |
639d11d3 | 5764 | bfd_get_filename (abfd)); |
c906108c SS |
5765 | } |
5766 | die = dwarf_alloc_die (); | |
5767 | die->offset = offset; | |
5768 | die->tag = abbrev->tag; | |
c906108c SS |
5769 | die->abbrev = abbrev_number; |
5770 | die->type = NULL; | |
5771 | ||
5772 | die->num_attrs = abbrev->num_attrs; | |
5773 | die->attrs = (struct attribute *) | |
5774 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
5775 | ||
5776 | for (i = 0; i < abbrev->num_attrs; ++i) | |
5777 | { | |
5778 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 5779 | abfd, info_ptr, cu); |
10b3939b DJ |
5780 | |
5781 | /* If this attribute is an absolute reference to a different | |
5782 | compilation unit, make sure that compilation unit is loaded | |
5783 | also. */ | |
5784 | if (die->attrs[i].form == DW_FORM_ref_addr | |
5785 | && (DW_ADDR (&die->attrs[i]) < cu->header.offset | |
5786 | || (DW_ADDR (&die->attrs[i]) | |
5787 | >= cu->header.offset + cu->header.length))) | |
5788 | { | |
5789 | struct dwarf2_per_cu_data *per_cu; | |
5790 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (&die->attrs[i]), | |
5791 | cu->objfile); | |
5792 | ||
5793 | /* Mark the dependence relation so that we don't flush PER_CU | |
5794 | too early. */ | |
5795 | dwarf2_add_dependence (cu, per_cu); | |
5796 | ||
5797 | /* If it's already on the queue, we have nothing to do. */ | |
5798 | if (per_cu->queued) | |
5799 | continue; | |
5800 | ||
5801 | /* If the compilation unit is already loaded, just mark it as | |
5802 | used. */ | |
5803 | if (per_cu->cu != NULL) | |
5804 | { | |
5805 | per_cu->cu->last_used = 0; | |
5806 | continue; | |
5807 | } | |
5808 | ||
5809 | /* Add it to the queue. */ | |
5810 | queue_comp_unit (per_cu); | |
5811 | } | |
c906108c SS |
5812 | } |
5813 | ||
5814 | *diep = die; | |
639d11d3 | 5815 | *has_children = abbrev->has_children; |
c906108c SS |
5816 | return info_ptr; |
5817 | } | |
5818 | ||
a8329558 | 5819 | /* Read an attribute value described by an attribute form. */ |
c906108c | 5820 | |
fe1b8b76 | 5821 | static gdb_byte * |
a8329558 | 5822 | read_attribute_value (struct attribute *attr, unsigned form, |
fe1b8b76 | 5823 | bfd *abfd, gdb_byte *info_ptr, |
e7c27a73 | 5824 | struct dwarf2_cu *cu) |
c906108c | 5825 | { |
e7c27a73 | 5826 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
5827 | unsigned int bytes_read; |
5828 | struct dwarf_block *blk; | |
5829 | ||
a8329558 KW |
5830 | attr->form = form; |
5831 | switch (form) | |
c906108c SS |
5832 | { |
5833 | case DW_FORM_addr: | |
5834 | case DW_FORM_ref_addr: | |
e7c27a73 | 5835 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 5836 | info_ptr += bytes_read; |
c906108c SS |
5837 | break; |
5838 | case DW_FORM_block2: | |
7b5a2f43 | 5839 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5840 | blk->size = read_2_bytes (abfd, info_ptr); |
5841 | info_ptr += 2; | |
5842 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5843 | info_ptr += blk->size; | |
5844 | DW_BLOCK (attr) = blk; | |
5845 | break; | |
5846 | case DW_FORM_block4: | |
7b5a2f43 | 5847 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5848 | blk->size = read_4_bytes (abfd, info_ptr); |
5849 | info_ptr += 4; | |
5850 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5851 | info_ptr += blk->size; | |
5852 | DW_BLOCK (attr) = blk; | |
5853 | break; | |
5854 | case DW_FORM_data2: | |
5855 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
5856 | info_ptr += 2; | |
5857 | break; | |
5858 | case DW_FORM_data4: | |
5859 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
5860 | info_ptr += 4; | |
5861 | break; | |
5862 | case DW_FORM_data8: | |
5863 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
5864 | info_ptr += 8; | |
5865 | break; | |
5866 | case DW_FORM_string: | |
5867 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
5868 | info_ptr += bytes_read; | |
5869 | break; | |
4bdf3d34 JJ |
5870 | case DW_FORM_strp: |
5871 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
5872 | &bytes_read); | |
5873 | info_ptr += bytes_read; | |
5874 | break; | |
c906108c | 5875 | case DW_FORM_block: |
7b5a2f43 | 5876 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5877 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5878 | info_ptr += bytes_read; | |
5879 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5880 | info_ptr += blk->size; | |
5881 | DW_BLOCK (attr) = blk; | |
5882 | break; | |
5883 | case DW_FORM_block1: | |
7b5a2f43 | 5884 | blk = dwarf_alloc_block (cu); |
c906108c SS |
5885 | blk->size = read_1_byte (abfd, info_ptr); |
5886 | info_ptr += 1; | |
5887 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
5888 | info_ptr += blk->size; | |
5889 | DW_BLOCK (attr) = blk; | |
5890 | break; | |
5891 | case DW_FORM_data1: | |
5892 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
5893 | info_ptr += 1; | |
5894 | break; | |
5895 | case DW_FORM_flag: | |
5896 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
5897 | info_ptr += 1; | |
5898 | break; | |
5899 | case DW_FORM_sdata: | |
5900 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
5901 | info_ptr += bytes_read; | |
5902 | break; | |
5903 | case DW_FORM_udata: | |
5904 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
5905 | info_ptr += bytes_read; | |
5906 | break; | |
5907 | case DW_FORM_ref1: | |
10b3939b | 5908 | DW_ADDR (attr) = cu->header.offset + read_1_byte (abfd, info_ptr); |
c906108c SS |
5909 | info_ptr += 1; |
5910 | break; | |
5911 | case DW_FORM_ref2: | |
10b3939b | 5912 | DW_ADDR (attr) = cu->header.offset + read_2_bytes (abfd, info_ptr); |
c906108c SS |
5913 | info_ptr += 2; |
5914 | break; | |
5915 | case DW_FORM_ref4: | |
10b3939b | 5916 | DW_ADDR (attr) = cu->header.offset + read_4_bytes (abfd, info_ptr); |
c906108c SS |
5917 | info_ptr += 4; |
5918 | break; | |
613e1657 | 5919 | case DW_FORM_ref8: |
10b3939b | 5920 | DW_ADDR (attr) = cu->header.offset + read_8_bytes (abfd, info_ptr); |
613e1657 KB |
5921 | info_ptr += 8; |
5922 | break; | |
c906108c | 5923 | case DW_FORM_ref_udata: |
10b3939b DJ |
5924 | DW_ADDR (attr) = (cu->header.offset |
5925 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); | |
c906108c SS |
5926 | info_ptr += bytes_read; |
5927 | break; | |
c906108c | 5928 | case DW_FORM_indirect: |
a8329558 KW |
5929 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
5930 | info_ptr += bytes_read; | |
e7c27a73 | 5931 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 5932 | break; |
c906108c | 5933 | default: |
8a3fe4f8 | 5934 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
5935 | dwarf_form_name (form), |
5936 | bfd_get_filename (abfd)); | |
c906108c SS |
5937 | } |
5938 | return info_ptr; | |
5939 | } | |
5940 | ||
a8329558 KW |
5941 | /* Read an attribute described by an abbreviated attribute. */ |
5942 | ||
fe1b8b76 | 5943 | static gdb_byte * |
a8329558 | 5944 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, |
fe1b8b76 | 5945 | bfd *abfd, gdb_byte *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
5946 | { |
5947 | attr->name = abbrev->name; | |
e7c27a73 | 5948 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
5949 | } |
5950 | ||
c906108c SS |
5951 | /* read dwarf information from a buffer */ |
5952 | ||
5953 | static unsigned int | |
fe1b8b76 | 5954 | read_1_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 5955 | { |
fe1b8b76 | 5956 | return bfd_get_8 (abfd, buf); |
c906108c SS |
5957 | } |
5958 | ||
5959 | static int | |
fe1b8b76 | 5960 | read_1_signed_byte (bfd *abfd, gdb_byte *buf) |
c906108c | 5961 | { |
fe1b8b76 | 5962 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
5963 | } |
5964 | ||
5965 | static unsigned int | |
fe1b8b76 | 5966 | read_2_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5967 | { |
fe1b8b76 | 5968 | return bfd_get_16 (abfd, buf); |
c906108c SS |
5969 | } |
5970 | ||
5971 | static int | |
fe1b8b76 | 5972 | read_2_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5973 | { |
fe1b8b76 | 5974 | return bfd_get_signed_16 (abfd, buf); |
c906108c SS |
5975 | } |
5976 | ||
5977 | static unsigned int | |
fe1b8b76 | 5978 | read_4_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5979 | { |
fe1b8b76 | 5980 | return bfd_get_32 (abfd, buf); |
c906108c SS |
5981 | } |
5982 | ||
5983 | static int | |
fe1b8b76 | 5984 | read_4_signed_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5985 | { |
fe1b8b76 | 5986 | return bfd_get_signed_32 (abfd, buf); |
c906108c SS |
5987 | } |
5988 | ||
ce5d95e1 | 5989 | static unsigned long |
fe1b8b76 | 5990 | read_8_bytes (bfd *abfd, gdb_byte *buf) |
c906108c | 5991 | { |
fe1b8b76 | 5992 | return bfd_get_64 (abfd, buf); |
c906108c SS |
5993 | } |
5994 | ||
5995 | static CORE_ADDR | |
fe1b8b76 | 5996 | read_address (bfd *abfd, gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 5997 | unsigned int *bytes_read) |
c906108c | 5998 | { |
e7c27a73 | 5999 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
6000 | CORE_ADDR retval = 0; |
6001 | ||
107d2387 | 6002 | if (cu_header->signed_addr_p) |
c906108c | 6003 | { |
107d2387 AC |
6004 | switch (cu_header->addr_size) |
6005 | { | |
6006 | case 2: | |
fe1b8b76 | 6007 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
6008 | break; |
6009 | case 4: | |
fe1b8b76 | 6010 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
6011 | break; |
6012 | case 8: | |
fe1b8b76 | 6013 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
6014 | break; |
6015 | default: | |
8e65ff28 | 6016 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6017 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 6018 | bfd_get_filename (abfd)); |
107d2387 AC |
6019 | } |
6020 | } | |
6021 | else | |
6022 | { | |
6023 | switch (cu_header->addr_size) | |
6024 | { | |
6025 | case 2: | |
fe1b8b76 | 6026 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
6027 | break; |
6028 | case 4: | |
fe1b8b76 | 6029 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
6030 | break; |
6031 | case 8: | |
fe1b8b76 | 6032 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
6033 | break; |
6034 | default: | |
8e65ff28 | 6035 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6036 | _("read_address: bad switch, unsigned [in module %s]"), |
659b0389 | 6037 | bfd_get_filename (abfd)); |
107d2387 | 6038 | } |
c906108c | 6039 | } |
64367e0a | 6040 | |
107d2387 AC |
6041 | *bytes_read = cu_header->addr_size; |
6042 | return retval; | |
c906108c SS |
6043 | } |
6044 | ||
f7ef9339 | 6045 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
6046 | specification allows the initial length to take up either 4 bytes |
6047 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
6048 | bytes describe the length and all offsets will be 8 bytes in length | |
6049 | instead of 4. | |
6050 | ||
f7ef9339 KB |
6051 | An older, non-standard 64-bit format is also handled by this |
6052 | function. The older format in question stores the initial length | |
6053 | as an 8-byte quantity without an escape value. Lengths greater | |
6054 | than 2^32 aren't very common which means that the initial 4 bytes | |
6055 | is almost always zero. Since a length value of zero doesn't make | |
6056 | sense for the 32-bit format, this initial zero can be considered to | |
6057 | be an escape value which indicates the presence of the older 64-bit | |
6058 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
6059 | greater than 4GB. If it becomes necessary to handle lengths |
6060 | somewhat larger than 4GB, we could allow other small values (such | |
6061 | as the non-sensical values of 1, 2, and 3) to also be used as | |
6062 | escape values indicating the presence of the old format. | |
f7ef9339 | 6063 | |
917c78fc MK |
6064 | The value returned via bytes_read should be used to increment the |
6065 | relevant pointer after calling read_initial_length(). | |
613e1657 KB |
6066 | |
6067 | As a side effect, this function sets the fields initial_length_size | |
6068 | and offset_size in cu_header to the values appropriate for the | |
6069 | length field. (The format of the initial length field determines | |
dd373385 | 6070 | the width of file offsets to be fetched later with read_offset().) |
613e1657 KB |
6071 | |
6072 | [ Note: read_initial_length() and read_offset() are based on the | |
6073 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 6074 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
6075 | from: |
6076 | ||
f7ef9339 | 6077 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
6078 | |
6079 | This document is only a draft and is subject to change. (So beware.) | |
6080 | ||
f7ef9339 | 6081 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
6082 | determined empirically by examining 64-bit ELF files produced by |
6083 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
6084 | |
6085 | - Kevin, July 16, 2002 | |
613e1657 KB |
6086 | ] */ |
6087 | ||
6088 | static LONGEST | |
fe1b8b76 | 6089 | read_initial_length (bfd *abfd, gdb_byte *buf, struct comp_unit_head *cu_header, |
891d2f0b | 6090 | unsigned int *bytes_read) |
613e1657 | 6091 | { |
fe1b8b76 | 6092 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 6093 | |
dd373385 | 6094 | if (length == 0xffffffff) |
613e1657 | 6095 | { |
fe1b8b76 | 6096 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 6097 | *bytes_read = 12; |
613e1657 | 6098 | } |
dd373385 | 6099 | else if (length == 0) |
f7ef9339 | 6100 | { |
dd373385 | 6101 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 6102 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 6103 | *bytes_read = 8; |
f7ef9339 | 6104 | } |
613e1657 KB |
6105 | else |
6106 | { | |
6107 | *bytes_read = 4; | |
613e1657 KB |
6108 | } |
6109 | ||
dd373385 EZ |
6110 | if (cu_header) |
6111 | { | |
6112 | gdb_assert (cu_header->initial_length_size == 0 | |
6113 | || cu_header->initial_length_size == 4 | |
6114 | || cu_header->initial_length_size == 8 | |
6115 | || cu_header->initial_length_size == 12); | |
6116 | ||
6117 | if (cu_header->initial_length_size != 0 | |
6118 | && cu_header->initial_length_size != *bytes_read) | |
6119 | complaint (&symfile_complaints, | |
6120 | _("intermixed 32-bit and 64-bit DWARF sections")); | |
6121 | ||
6122 | cu_header->initial_length_size = *bytes_read; | |
6123 | cu_header->offset_size = (*bytes_read == 4) ? 4 : 8; | |
6124 | } | |
6125 | ||
6126 | return length; | |
613e1657 KB |
6127 | } |
6128 | ||
6129 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 6130 | given by cu_header->offset_size. */ |
613e1657 KB |
6131 | |
6132 | static LONGEST | |
fe1b8b76 | 6133 | read_offset (bfd *abfd, gdb_byte *buf, const struct comp_unit_head *cu_header, |
891d2f0b | 6134 | unsigned int *bytes_read) |
613e1657 KB |
6135 | { |
6136 | LONGEST retval = 0; | |
6137 | ||
6138 | switch (cu_header->offset_size) | |
6139 | { | |
6140 | case 4: | |
fe1b8b76 | 6141 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
6142 | *bytes_read = 4; |
6143 | break; | |
6144 | case 8: | |
fe1b8b76 | 6145 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
6146 | *bytes_read = 8; |
6147 | break; | |
6148 | default: | |
8e65ff28 | 6149 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6150 | _("read_offset: bad switch [in module %s]"), |
659b0389 | 6151 | bfd_get_filename (abfd)); |
613e1657 KB |
6152 | } |
6153 | ||
917c78fc | 6154 | return retval; |
613e1657 KB |
6155 | } |
6156 | ||
fe1b8b76 JB |
6157 | static gdb_byte * |
6158 | read_n_bytes (bfd *abfd, gdb_byte *buf, unsigned int size) | |
c906108c SS |
6159 | { |
6160 | /* If the size of a host char is 8 bits, we can return a pointer | |
6161 | to the buffer, otherwise we have to copy the data to a buffer | |
6162 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6163 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 6164 | return buf; |
c906108c SS |
6165 | } |
6166 | ||
6167 | static char * | |
fe1b8b76 | 6168 | read_string (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
6169 | { |
6170 | /* If the size of a host char is 8 bits, we can return a pointer | |
6171 | to the string, otherwise we have to copy the string to a buffer | |
6172 | allocated on the temporary obstack. */ | |
4bdf3d34 | 6173 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
6174 | if (*buf == '\0') |
6175 | { | |
6176 | *bytes_read_ptr = 1; | |
6177 | return NULL; | |
6178 | } | |
fe1b8b76 JB |
6179 | *bytes_read_ptr = strlen ((char *) buf) + 1; |
6180 | return (char *) buf; | |
4bdf3d34 JJ |
6181 | } |
6182 | ||
6183 | static char * | |
fe1b8b76 | 6184 | read_indirect_string (bfd *abfd, gdb_byte *buf, |
4bdf3d34 JJ |
6185 | const struct comp_unit_head *cu_header, |
6186 | unsigned int *bytes_read_ptr) | |
6187 | { | |
6188 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
891d2f0b | 6189 | bytes_read_ptr); |
c906108c | 6190 | |
6502dd73 | 6191 | if (dwarf2_per_objfile->str_buffer == NULL) |
c906108c | 6192 | { |
8a3fe4f8 | 6193 | error (_("DW_FORM_strp used without .debug_str section [in module %s]"), |
659b0389 | 6194 | bfd_get_filename (abfd)); |
4bdf3d34 | 6195 | return NULL; |
c906108c | 6196 | } |
6502dd73 | 6197 | if (str_offset >= dwarf2_per_objfile->str_size) |
c906108c | 6198 | { |
8a3fe4f8 | 6199 | error (_("DW_FORM_strp pointing outside of .debug_str section [in module %s]"), |
659b0389 | 6200 | bfd_get_filename (abfd)); |
c906108c SS |
6201 | return NULL; |
6202 | } | |
4bdf3d34 | 6203 | gdb_assert (HOST_CHAR_BIT == 8); |
6502dd73 | 6204 | if (dwarf2_per_objfile->str_buffer[str_offset] == '\0') |
4bdf3d34 | 6205 | return NULL; |
fe1b8b76 | 6206 | return (char *) (dwarf2_per_objfile->str_buffer + str_offset); |
c906108c SS |
6207 | } |
6208 | ||
ce5d95e1 | 6209 | static unsigned long |
fe1b8b76 | 6210 | read_unsigned_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6211 | { |
ce5d95e1 JB |
6212 | unsigned long result; |
6213 | unsigned int num_read; | |
c906108c SS |
6214 | int i, shift; |
6215 | unsigned char byte; | |
6216 | ||
6217 | result = 0; | |
6218 | shift = 0; | |
6219 | num_read = 0; | |
6220 | i = 0; | |
6221 | while (1) | |
6222 | { | |
fe1b8b76 | 6223 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6224 | buf++; |
6225 | num_read++; | |
ce5d95e1 | 6226 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
6227 | if ((byte & 128) == 0) |
6228 | { | |
6229 | break; | |
6230 | } | |
6231 | shift += 7; | |
6232 | } | |
6233 | *bytes_read_ptr = num_read; | |
6234 | return result; | |
6235 | } | |
6236 | ||
ce5d95e1 | 6237 | static long |
fe1b8b76 | 6238 | read_signed_leb128 (bfd *abfd, gdb_byte *buf, unsigned int *bytes_read_ptr) |
c906108c | 6239 | { |
ce5d95e1 | 6240 | long result; |
77e0b926 | 6241 | int i, shift, num_read; |
c906108c SS |
6242 | unsigned char byte; |
6243 | ||
6244 | result = 0; | |
6245 | shift = 0; | |
c906108c SS |
6246 | num_read = 0; |
6247 | i = 0; | |
6248 | while (1) | |
6249 | { | |
fe1b8b76 | 6250 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
6251 | buf++; |
6252 | num_read++; | |
ce5d95e1 | 6253 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
6254 | shift += 7; |
6255 | if ((byte & 128) == 0) | |
6256 | { | |
6257 | break; | |
6258 | } | |
6259 | } | |
77e0b926 DJ |
6260 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
6261 | result |= -(((long)1) << shift); | |
c906108c SS |
6262 | *bytes_read_ptr = num_read; |
6263 | return result; | |
6264 | } | |
6265 | ||
4bb7a0a7 DJ |
6266 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
6267 | ||
fe1b8b76 JB |
6268 | static gdb_byte * |
6269 | skip_leb128 (bfd *abfd, gdb_byte *buf) | |
4bb7a0a7 DJ |
6270 | { |
6271 | int byte; | |
6272 | ||
6273 | while (1) | |
6274 | { | |
fe1b8b76 | 6275 | byte = bfd_get_8 (abfd, buf); |
4bb7a0a7 DJ |
6276 | buf++; |
6277 | if ((byte & 128) == 0) | |
6278 | return buf; | |
6279 | } | |
6280 | } | |
6281 | ||
c906108c | 6282 | static void |
e142c38c | 6283 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
6284 | { |
6285 | switch (lang) | |
6286 | { | |
6287 | case DW_LANG_C89: | |
6288 | case DW_LANG_C: | |
e142c38c | 6289 | cu->language = language_c; |
c906108c SS |
6290 | break; |
6291 | case DW_LANG_C_plus_plus: | |
e142c38c | 6292 | cu->language = language_cplus; |
c906108c SS |
6293 | break; |
6294 | case DW_LANG_Fortran77: | |
6295 | case DW_LANG_Fortran90: | |
b21b22e0 | 6296 | case DW_LANG_Fortran95: |
e142c38c | 6297 | cu->language = language_fortran; |
c906108c SS |
6298 | break; |
6299 | case DW_LANG_Mips_Assembler: | |
e142c38c | 6300 | cu->language = language_asm; |
c906108c | 6301 | break; |
bebd888e | 6302 | case DW_LANG_Java: |
e142c38c | 6303 | cu->language = language_java; |
bebd888e | 6304 | break; |
c906108c | 6305 | case DW_LANG_Ada83: |
8aaf0b47 | 6306 | case DW_LANG_Ada95: |
bc5f45f8 JB |
6307 | cu->language = language_ada; |
6308 | break; | |
72019c9c GM |
6309 | case DW_LANG_Modula2: |
6310 | cu->language = language_m2; | |
6311 | break; | |
c906108c SS |
6312 | case DW_LANG_Cobol74: |
6313 | case DW_LANG_Cobol85: | |
6314 | case DW_LANG_Pascal83: | |
c906108c | 6315 | default: |
e142c38c | 6316 | cu->language = language_minimal; |
c906108c SS |
6317 | break; |
6318 | } | |
e142c38c | 6319 | cu->language_defn = language_def (cu->language); |
c906108c SS |
6320 | } |
6321 | ||
6322 | /* Return the named attribute or NULL if not there. */ | |
6323 | ||
6324 | static struct attribute * | |
e142c38c | 6325 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
6326 | { |
6327 | unsigned int i; | |
6328 | struct attribute *spec = NULL; | |
6329 | ||
6330 | for (i = 0; i < die->num_attrs; ++i) | |
6331 | { | |
6332 | if (die->attrs[i].name == name) | |
10b3939b | 6333 | return &die->attrs[i]; |
c906108c SS |
6334 | if (die->attrs[i].name == DW_AT_specification |
6335 | || die->attrs[i].name == DW_AT_abstract_origin) | |
6336 | spec = &die->attrs[i]; | |
6337 | } | |
c906108c | 6338 | |
10b3939b DJ |
6339 | if (spec) |
6340 | return dwarf2_attr (follow_die_ref (die, spec, cu), name, cu); | |
c5aa993b | 6341 | |
c906108c SS |
6342 | return NULL; |
6343 | } | |
6344 | ||
05cf31d1 JB |
6345 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
6346 | and holds a non-zero value. This function should only be used for | |
6347 | DW_FORM_flag attributes. */ | |
6348 | ||
6349 | static int | |
6350 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
6351 | { | |
6352 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
6353 | ||
6354 | return (attr && DW_UNSND (attr)); | |
6355 | } | |
6356 | ||
3ca72b44 | 6357 | static int |
e142c38c | 6358 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 6359 | { |
05cf31d1 JB |
6360 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
6361 | which value is non-zero. However, we have to be careful with | |
6362 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
6363 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
6364 | end up accidently finding a declaration attribute that belongs | |
6365 | to a different DIE referenced by the specification attribute, | |
6366 | even though the given DIE does not have a declaration attribute. */ | |
6367 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
6368 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
6369 | } |
6370 | ||
63d06c5c DC |
6371 | /* Return the die giving the specification for DIE, if there is |
6372 | one. */ | |
6373 | ||
6374 | static struct die_info * | |
e142c38c | 6375 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 6376 | { |
e142c38c | 6377 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
6378 | |
6379 | if (spec_attr == NULL) | |
6380 | return NULL; | |
6381 | else | |
10b3939b | 6382 | return follow_die_ref (die, spec_attr, cu); |
63d06c5c | 6383 | } |
c906108c | 6384 | |
debd256d JB |
6385 | /* Free the line_header structure *LH, and any arrays and strings it |
6386 | refers to. */ | |
6387 | static void | |
6388 | free_line_header (struct line_header *lh) | |
6389 | { | |
6390 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 6391 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
6392 | |
6393 | /* Remember that all the lh->file_names[i].name pointers are | |
6394 | pointers into debug_line_buffer, and don't need to be freed. */ | |
6395 | if (lh->file_names) | |
a8bc7b56 | 6396 | xfree (lh->file_names); |
debd256d JB |
6397 | |
6398 | /* Similarly for the include directory names. */ | |
6399 | if (lh->include_dirs) | |
a8bc7b56 | 6400 | xfree (lh->include_dirs); |
debd256d | 6401 | |
a8bc7b56 | 6402 | xfree (lh); |
debd256d JB |
6403 | } |
6404 | ||
6405 | ||
6406 | /* Add an entry to LH's include directory table. */ | |
6407 | static void | |
6408 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 6409 | { |
debd256d JB |
6410 | /* Grow the array if necessary. */ |
6411 | if (lh->include_dirs_size == 0) | |
c5aa993b | 6412 | { |
debd256d JB |
6413 | lh->include_dirs_size = 1; /* for testing */ |
6414 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
6415 | * sizeof (*lh->include_dirs)); | |
6416 | } | |
6417 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
6418 | { | |
6419 | lh->include_dirs_size *= 2; | |
6420 | lh->include_dirs = xrealloc (lh->include_dirs, | |
6421 | (lh->include_dirs_size | |
6422 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 6423 | } |
c906108c | 6424 | |
debd256d JB |
6425 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
6426 | } | |
6427 | ||
6428 | ||
6429 | /* Add an entry to LH's file name table. */ | |
6430 | static void | |
6431 | add_file_name (struct line_header *lh, | |
6432 | char *name, | |
6433 | unsigned int dir_index, | |
6434 | unsigned int mod_time, | |
6435 | unsigned int length) | |
6436 | { | |
6437 | struct file_entry *fe; | |
6438 | ||
6439 | /* Grow the array if necessary. */ | |
6440 | if (lh->file_names_size == 0) | |
6441 | { | |
6442 | lh->file_names_size = 1; /* for testing */ | |
6443 | lh->file_names = xmalloc (lh->file_names_size | |
6444 | * sizeof (*lh->file_names)); | |
6445 | } | |
6446 | else if (lh->num_file_names >= lh->file_names_size) | |
6447 | { | |
6448 | lh->file_names_size *= 2; | |
6449 | lh->file_names = xrealloc (lh->file_names, | |
6450 | (lh->file_names_size | |
6451 | * sizeof (*lh->file_names))); | |
6452 | } | |
6453 | ||
6454 | fe = &lh->file_names[lh->num_file_names++]; | |
6455 | fe->name = name; | |
6456 | fe->dir_index = dir_index; | |
6457 | fe->mod_time = mod_time; | |
6458 | fe->length = length; | |
aaa75496 | 6459 | fe->included_p = 0; |
debd256d JB |
6460 | } |
6461 | ||
6462 | ||
6463 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
6464 | .debug_line, according to the endianness of ABFD. Return a pointer |
6465 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
6466 | |
6467 | NOTE: the strings in the include directory and file name tables of | |
6468 | the returned object point into debug_line_buffer, and must not be | |
6469 | freed. */ | |
6470 | static struct line_header * | |
6471 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 6472 | struct dwarf2_cu *cu) |
debd256d JB |
6473 | { |
6474 | struct cleanup *back_to; | |
6475 | struct line_header *lh; | |
fe1b8b76 | 6476 | gdb_byte *line_ptr; |
891d2f0b | 6477 | unsigned int bytes_read; |
debd256d JB |
6478 | int i; |
6479 | char *cur_dir, *cur_file; | |
6480 | ||
6502dd73 | 6481 | if (dwarf2_per_objfile->line_buffer == NULL) |
debd256d | 6482 | { |
e2e0b3e5 | 6483 | complaint (&symfile_complaints, _("missing .debug_line section")); |
debd256d JB |
6484 | return 0; |
6485 | } | |
6486 | ||
a738430d MK |
6487 | /* Make sure that at least there's room for the total_length field. |
6488 | That could be 12 bytes long, but we're just going to fudge that. */ | |
6502dd73 | 6489 | if (offset + 4 >= dwarf2_per_objfile->line_size) |
debd256d | 6490 | { |
4d3c2250 | 6491 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6492 | return 0; |
6493 | } | |
6494 | ||
6495 | lh = xmalloc (sizeof (*lh)); | |
6496 | memset (lh, 0, sizeof (*lh)); | |
6497 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
6498 | (void *) lh); | |
6499 | ||
6502dd73 | 6500 | line_ptr = dwarf2_per_objfile->line_buffer + offset; |
debd256d | 6501 | |
a738430d | 6502 | /* Read in the header. */ |
dd373385 EZ |
6503 | lh->total_length = |
6504 | read_initial_length (abfd, line_ptr, &cu->header, &bytes_read); | |
debd256d | 6505 | line_ptr += bytes_read; |
6502dd73 DJ |
6506 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line_buffer |
6507 | + dwarf2_per_objfile->line_size)) | |
debd256d | 6508 | { |
4d3c2250 | 6509 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
6510 | return 0; |
6511 | } | |
6512 | lh->statement_program_end = line_ptr + lh->total_length; | |
6513 | lh->version = read_2_bytes (abfd, line_ptr); | |
6514 | line_ptr += 2; | |
e7c27a73 | 6515 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
6516 | line_ptr += bytes_read; |
6517 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
6518 | line_ptr += 1; | |
6519 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
6520 | line_ptr += 1; | |
6521 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
6522 | line_ptr += 1; | |
6523 | lh->line_range = read_1_byte (abfd, line_ptr); | |
6524 | line_ptr += 1; | |
6525 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
6526 | line_ptr += 1; | |
6527 | lh->standard_opcode_lengths | |
fe1b8b76 | 6528 | = xmalloc (lh->opcode_base * sizeof (lh->standard_opcode_lengths[0])); |
debd256d JB |
6529 | |
6530 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
6531 | for (i = 1; i < lh->opcode_base; ++i) | |
6532 | { | |
6533 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
6534 | line_ptr += 1; | |
6535 | } | |
6536 | ||
a738430d | 6537 | /* Read directory table. */ |
debd256d JB |
6538 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6539 | { | |
6540 | line_ptr += bytes_read; | |
6541 | add_include_dir (lh, cur_dir); | |
6542 | } | |
6543 | line_ptr += bytes_read; | |
6544 | ||
a738430d | 6545 | /* Read file name table. */ |
debd256d JB |
6546 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) |
6547 | { | |
6548 | unsigned int dir_index, mod_time, length; | |
6549 | ||
6550 | line_ptr += bytes_read; | |
6551 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6552 | line_ptr += bytes_read; | |
6553 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6554 | line_ptr += bytes_read; | |
6555 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6556 | line_ptr += bytes_read; | |
6557 | ||
6558 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6559 | } | |
6560 | line_ptr += bytes_read; | |
6561 | lh->statement_program_start = line_ptr; | |
6562 | ||
6502dd73 DJ |
6563 | if (line_ptr > (dwarf2_per_objfile->line_buffer |
6564 | + dwarf2_per_objfile->line_size)) | |
4d3c2250 | 6565 | complaint (&symfile_complaints, |
e2e0b3e5 | 6566 | _("line number info header doesn't fit in `.debug_line' section")); |
debd256d JB |
6567 | |
6568 | discard_cleanups (back_to); | |
6569 | return lh; | |
6570 | } | |
c906108c | 6571 | |
5fb290d7 DJ |
6572 | /* This function exists to work around a bug in certain compilers |
6573 | (particularly GCC 2.95), in which the first line number marker of a | |
6574 | function does not show up until after the prologue, right before | |
6575 | the second line number marker. This function shifts ADDRESS down | |
6576 | to the beginning of the function if necessary, and is called on | |
6577 | addresses passed to record_line. */ | |
6578 | ||
6579 | static CORE_ADDR | |
e142c38c | 6580 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
6581 | { |
6582 | struct function_range *fn; | |
6583 | ||
6584 | /* Find the function_range containing address. */ | |
e142c38c | 6585 | if (!cu->first_fn) |
5fb290d7 DJ |
6586 | return address; |
6587 | ||
e142c38c DJ |
6588 | if (!cu->cached_fn) |
6589 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 6590 | |
e142c38c | 6591 | fn = cu->cached_fn; |
5fb290d7 DJ |
6592 | while (fn) |
6593 | if (fn->lowpc <= address && fn->highpc > address) | |
6594 | goto found; | |
6595 | else | |
6596 | fn = fn->next; | |
6597 | ||
e142c38c DJ |
6598 | fn = cu->first_fn; |
6599 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
6600 | if (fn->lowpc <= address && fn->highpc > address) |
6601 | goto found; | |
6602 | else | |
6603 | fn = fn->next; | |
6604 | ||
6605 | return address; | |
6606 | ||
6607 | found: | |
6608 | if (fn->seen_line) | |
6609 | return address; | |
6610 | if (address != fn->lowpc) | |
4d3c2250 | 6611 | complaint (&symfile_complaints, |
e2e0b3e5 | 6612 | _("misplaced first line number at 0x%lx for '%s'"), |
4d3c2250 | 6613 | (unsigned long) address, fn->name); |
5fb290d7 DJ |
6614 | fn->seen_line = 1; |
6615 | return fn->lowpc; | |
6616 | } | |
6617 | ||
aaa75496 JB |
6618 | /* Decode the Line Number Program (LNP) for the given line_header |
6619 | structure and CU. The actual information extracted and the type | |
6620 | of structures created from the LNP depends on the value of PST. | |
6621 | ||
6622 | 1. If PST is NULL, then this procedure uses the data from the program | |
6623 | to create all necessary symbol tables, and their linetables. | |
6624 | The compilation directory of the file is passed in COMP_DIR, | |
6625 | and must not be NULL. | |
6626 | ||
6627 | 2. If PST is not NULL, this procedure reads the program to determine | |
6628 | the list of files included by the unit represented by PST, and | |
6629 | builds all the associated partial symbol tables. In this case, | |
6630 | the value of COMP_DIR is ignored, and can thus be NULL (the COMP_DIR | |
6631 | is not used to compute the full name of the symtab, and therefore | |
6632 | omitting it when building the partial symtab does not introduce | |
6633 | the potential for inconsistency - a partial symtab and its associated | |
6634 | symbtab having a different fullname -). */ | |
debd256d | 6635 | |
c906108c | 6636 | static void |
debd256d | 6637 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
aaa75496 | 6638 | struct dwarf2_cu *cu, struct partial_symtab *pst) |
c906108c | 6639 | { |
fe1b8b76 JB |
6640 | gdb_byte *line_ptr; |
6641 | gdb_byte *line_end; | |
e7c27a73 | 6642 | unsigned int bytes_read; |
c906108c | 6643 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
6644 | CORE_ADDR baseaddr; |
6645 | struct objfile *objfile = cu->objfile; | |
aaa75496 | 6646 | const int decode_for_pst_p = (pst != NULL); |
366da635 | 6647 | struct subfile *last_subfile = NULL; |
e142c38c DJ |
6648 | |
6649 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6650 | |
debd256d JB |
6651 | line_ptr = lh->statement_program_start; |
6652 | line_end = lh->statement_program_end; | |
c906108c SS |
6653 | |
6654 | /* Read the statement sequences until there's nothing left. */ | |
6655 | while (line_ptr < line_end) | |
6656 | { | |
6657 | /* state machine registers */ | |
6658 | CORE_ADDR address = 0; | |
6659 | unsigned int file = 1; | |
6660 | unsigned int line = 1; | |
6661 | unsigned int column = 0; | |
debd256d | 6662 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
6663 | int basic_block = 0; |
6664 | int end_sequence = 0; | |
6665 | ||
aaa75496 | 6666 | if (!decode_for_pst_p && lh->num_file_names >= file) |
c906108c | 6667 | { |
aaa75496 | 6668 | /* Start a subfile for the current file of the state machine. */ |
debd256d JB |
6669 | /* lh->include_dirs and lh->file_names are 0-based, but the |
6670 | directory and file name numbers in the statement program | |
6671 | are 1-based. */ | |
6672 | struct file_entry *fe = &lh->file_names[file - 1]; | |
4f1520fb | 6673 | char *dir = NULL; |
a738430d | 6674 | |
debd256d JB |
6675 | if (fe->dir_index) |
6676 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb FR |
6677 | |
6678 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
c906108c SS |
6679 | } |
6680 | ||
a738430d | 6681 | /* Decode the table. */ |
c5aa993b | 6682 | while (!end_sequence) |
c906108c SS |
6683 | { |
6684 | op_code = read_1_byte (abfd, line_ptr); | |
6685 | line_ptr += 1; | |
9aa1fe7e | 6686 | |
debd256d | 6687 | if (op_code >= lh->opcode_base) |
a738430d MK |
6688 | { |
6689 | /* Special operand. */ | |
debd256d JB |
6690 | adj_opcode = op_code - lh->opcode_base; |
6691 | address += (adj_opcode / lh->line_range) | |
6692 | * lh->minimum_instruction_length; | |
6693 | line += lh->line_base + (adj_opcode % lh->line_range); | |
aa495d11 | 6694 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6695 | if (!decode_for_pst_p) |
6696 | { | |
366da635 DJ |
6697 | if (last_subfile != current_subfile) |
6698 | { | |
6699 | if (last_subfile) | |
6700 | record_line (last_subfile, 0, address); | |
6701 | last_subfile = current_subfile; | |
6702 | } | |
a738430d | 6703 | /* Append row to matrix using current values. */ |
aaa75496 JB |
6704 | record_line (current_subfile, line, |
6705 | check_cu_functions (address, cu)); | |
6706 | } | |
9aa1fe7e GK |
6707 | basic_block = 1; |
6708 | } | |
6709 | else switch (op_code) | |
c906108c SS |
6710 | { |
6711 | case DW_LNS_extended_op: | |
473b7be6 DJ |
6712 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6713 | line_ptr += bytes_read; | |
c906108c SS |
6714 | extended_op = read_1_byte (abfd, line_ptr); |
6715 | line_ptr += 1; | |
6716 | switch (extended_op) | |
6717 | { | |
6718 | case DW_LNE_end_sequence: | |
6719 | end_sequence = 1; | |
aa495d11 | 6720 | lh->file_names[file - 1].included_p = 1; |
aaa75496 JB |
6721 | if (!decode_for_pst_p) |
6722 | record_line (current_subfile, 0, address); | |
c906108c SS |
6723 | break; |
6724 | case DW_LNE_set_address: | |
e7c27a73 | 6725 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
6726 | line_ptr += bytes_read; |
6727 | address += baseaddr; | |
c906108c SS |
6728 | break; |
6729 | case DW_LNE_define_file: | |
debd256d JB |
6730 | { |
6731 | char *cur_file; | |
6732 | unsigned int dir_index, mod_time, length; | |
6733 | ||
6734 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
6735 | line_ptr += bytes_read; | |
6736 | dir_index = | |
6737 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6738 | line_ptr += bytes_read; | |
6739 | mod_time = | |
6740 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6741 | line_ptr += bytes_read; | |
6742 | length = | |
6743 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6744 | line_ptr += bytes_read; | |
6745 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
6746 | } | |
c906108c SS |
6747 | break; |
6748 | default: | |
4d3c2250 | 6749 | complaint (&symfile_complaints, |
e2e0b3e5 | 6750 | _("mangled .debug_line section")); |
debd256d | 6751 | return; |
c906108c SS |
6752 | } |
6753 | break; | |
6754 | case DW_LNS_copy: | |
aa495d11 | 6755 | lh->file_names[file - 1].included_p = 1; |
aaa75496 | 6756 | if (!decode_for_pst_p) |
366da635 DJ |
6757 | { |
6758 | if (last_subfile != current_subfile) | |
6759 | { | |
6760 | if (last_subfile) | |
6761 | record_line (last_subfile, 0, address); | |
6762 | last_subfile = current_subfile; | |
6763 | } | |
6764 | record_line (current_subfile, line, | |
6765 | check_cu_functions (address, cu)); | |
6766 | } | |
c906108c SS |
6767 | basic_block = 0; |
6768 | break; | |
6769 | case DW_LNS_advance_pc: | |
debd256d | 6770 | address += lh->minimum_instruction_length |
c906108c SS |
6771 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6772 | line_ptr += bytes_read; | |
6773 | break; | |
6774 | case DW_LNS_advance_line: | |
6775 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
6776 | line_ptr += bytes_read; | |
6777 | break; | |
6778 | case DW_LNS_set_file: | |
debd256d | 6779 | { |
a738430d MK |
6780 | /* The arrays lh->include_dirs and lh->file_names are |
6781 | 0-based, but the directory and file name numbers in | |
6782 | the statement program are 1-based. */ | |
debd256d | 6783 | struct file_entry *fe; |
4f1520fb | 6784 | char *dir = NULL; |
a738430d | 6785 | |
debd256d JB |
6786 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
6787 | line_ptr += bytes_read; | |
6788 | fe = &lh->file_names[file - 1]; | |
6789 | if (fe->dir_index) | |
6790 | dir = lh->include_dirs[fe->dir_index - 1]; | |
4f1520fb | 6791 | |
aaa75496 | 6792 | if (!decode_for_pst_p) |
366da635 DJ |
6793 | { |
6794 | last_subfile = current_subfile; | |
6795 | dwarf2_start_subfile (fe->name, dir, comp_dir); | |
6796 | } | |
debd256d | 6797 | } |
c906108c SS |
6798 | break; |
6799 | case DW_LNS_set_column: | |
6800 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6801 | line_ptr += bytes_read; | |
6802 | break; | |
6803 | case DW_LNS_negate_stmt: | |
6804 | is_stmt = (!is_stmt); | |
6805 | break; | |
6806 | case DW_LNS_set_basic_block: | |
6807 | basic_block = 1; | |
6808 | break; | |
c2c6d25f JM |
6809 | /* Add to the address register of the state machine the |
6810 | address increment value corresponding to special opcode | |
a738430d MK |
6811 | 255. I.e., this value is scaled by the minimum |
6812 | instruction length since special opcode 255 would have | |
6813 | scaled the the increment. */ | |
c906108c | 6814 | case DW_LNS_const_add_pc: |
debd256d JB |
6815 | address += (lh->minimum_instruction_length |
6816 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
6817 | break; |
6818 | case DW_LNS_fixed_advance_pc: | |
6819 | address += read_2_bytes (abfd, line_ptr); | |
6820 | line_ptr += 2; | |
6821 | break; | |
9aa1fe7e | 6822 | default: |
a738430d MK |
6823 | { |
6824 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 6825 | int i; |
a738430d | 6826 | |
debd256d | 6827 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
6828 | { |
6829 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
6830 | line_ptr += bytes_read; | |
6831 | } | |
6832 | } | |
c906108c SS |
6833 | } |
6834 | } | |
6835 | } | |
aaa75496 JB |
6836 | |
6837 | if (decode_for_pst_p) | |
6838 | { | |
6839 | int file_index; | |
6840 | ||
6841 | /* Now that we're done scanning the Line Header Program, we can | |
6842 | create the psymtab of each included file. */ | |
6843 | for (file_index = 0; file_index < lh->num_file_names; file_index++) | |
6844 | if (lh->file_names[file_index].included_p == 1) | |
6845 | { | |
5b5464ad JB |
6846 | const struct file_entry fe = lh->file_names [file_index]; |
6847 | char *include_name = fe.name; | |
6848 | char *dir_name = NULL; | |
6849 | char *pst_filename = pst->filename; | |
6850 | ||
6851 | if (fe.dir_index) | |
6852 | dir_name = lh->include_dirs[fe.dir_index - 1]; | |
6853 | ||
6854 | if (!IS_ABSOLUTE_PATH (include_name) && dir_name != NULL) | |
6855 | { | |
1754f103 MK |
6856 | include_name = concat (dir_name, SLASH_STRING, |
6857 | include_name, (char *)NULL); | |
5b5464ad JB |
6858 | make_cleanup (xfree, include_name); |
6859 | } | |
6860 | ||
6861 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) | |
6862 | { | |
1754f103 MK |
6863 | pst_filename = concat (pst->dirname, SLASH_STRING, |
6864 | pst_filename, (char *)NULL); | |
5b5464ad JB |
6865 | make_cleanup (xfree, pst_filename); |
6866 | } | |
6867 | ||
6868 | if (strcmp (include_name, pst_filename) != 0) | |
aaa75496 JB |
6869 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
6870 | } | |
6871 | } | |
c906108c SS |
6872 | } |
6873 | ||
6874 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
6875 | DIRNAME the name of the source directory which contains FILENAME | |
4f1520fb FR |
6876 | or NULL if not known. COMP_DIR is the compilation directory for the |
6877 | linetable's compilation unit or NULL if not known. | |
c906108c SS |
6878 | This routine tries to keep line numbers from identical absolute and |
6879 | relative file names in a common subfile. | |
6880 | ||
6881 | Using the `list' example from the GDB testsuite, which resides in | |
6882 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
6883 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
6884 | ||
c5aa993b JM |
6885 | DW_AT_name: /srcdir/list0.c |
6886 | DW_AT_comp_dir: /compdir | |
357e46e7 | 6887 | files.files[0].name: list0.h |
c5aa993b | 6888 | files.files[0].dir: /srcdir |
357e46e7 | 6889 | files.files[1].name: list0.c |
c5aa993b | 6890 | files.files[1].dir: /srcdir |
c906108c SS |
6891 | |
6892 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
6893 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
6894 | start_subfile will ensure that this happens provided that we pass the | |
6895 | concatenation of files.files[1].dir and files.files[1].name as the | |
6896 | subfile's name. */ | |
c906108c SS |
6897 | |
6898 | static void | |
4f1520fb | 6899 | dwarf2_start_subfile (char *filename, char *dirname, char *comp_dir) |
c906108c | 6900 | { |
4f1520fb FR |
6901 | char *fullname; |
6902 | ||
6903 | /* While reading the DIEs, we call start_symtab(DW_AT_name, DW_AT_comp_dir). | |
6904 | `start_symtab' will always pass the contents of DW_AT_comp_dir as | |
6905 | second argument to start_subfile. To be consistent, we do the | |
6906 | same here. In order not to lose the line information directory, | |
6907 | we concatenate it to the filename when it makes sense. | |
6908 | Note that the Dwarf3 standard says (speaking of filenames in line | |
6909 | information): ``The directory index is ignored for file names | |
6910 | that represent full path names''. Thus ignoring dirname in the | |
6911 | `else' branch below isn't an issue. */ | |
c906108c | 6912 | |
d5166ae1 | 6913 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
4f1520fb FR |
6914 | fullname = concat (dirname, SLASH_STRING, filename, (char *)NULL); |
6915 | else | |
6916 | fullname = filename; | |
c906108c | 6917 | |
4f1520fb FR |
6918 | start_subfile (fullname, comp_dir); |
6919 | ||
6920 | if (fullname != filename) | |
6921 | xfree (fullname); | |
c906108c SS |
6922 | } |
6923 | ||
4c2df51b DJ |
6924 | static void |
6925 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 6926 | struct dwarf2_cu *cu) |
4c2df51b | 6927 | { |
e7c27a73 DJ |
6928 | struct objfile *objfile = cu->objfile; |
6929 | struct comp_unit_head *cu_header = &cu->header; | |
6930 | ||
4c2df51b DJ |
6931 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
6932 | code here to turn a symbol with DW_AT_external and a | |
6933 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
6934 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
6935 | with some versions of binutils) where shared libraries could have | |
6936 | relocations against symbols in their debug information - the | |
6937 | minimal symbol would have the right address, but the debug info | |
6938 | would not. It's no longer necessary, because we will explicitly | |
6939 | apply relocations when we read in the debug information now. */ | |
6940 | ||
6941 | /* A DW_AT_location attribute with no contents indicates that a | |
6942 | variable has been optimized away. */ | |
6943 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
6944 | { | |
6945 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
6946 | return; | |
6947 | } | |
6948 | ||
6949 | /* Handle one degenerate form of location expression specially, to | |
6950 | preserve GDB's previous behavior when section offsets are | |
6951 | specified. If this is just a DW_OP_addr then mark this symbol | |
6952 | as LOC_STATIC. */ | |
6953 | ||
6954 | if (attr_form_is_block (attr) | |
6955 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
6956 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
6957 | { | |
891d2f0b | 6958 | unsigned int dummy; |
4c2df51b DJ |
6959 | |
6960 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 6961 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
6962 | fixup_symbol_section (sym, objfile); |
6963 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
6964 | SYMBOL_SECTION (sym)); | |
6965 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
6966 | return; | |
6967 | } | |
6968 | ||
6969 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
6970 | expression evaluator, and use LOC_COMPUTED only when necessary | |
6971 | (i.e. when the value of a register or memory location is | |
6972 | referenced, or a thread-local block, etc.). Then again, it might | |
6973 | not be worthwhile. I'm assuming that it isn't unless performance | |
6974 | or memory numbers show me otherwise. */ | |
6975 | ||
e7c27a73 | 6976 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
6977 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
6978 | } | |
6979 | ||
c906108c SS |
6980 | /* Given a pointer to a DWARF information entry, figure out if we need |
6981 | to make a symbol table entry for it, and if so, create a new entry | |
6982 | and return a pointer to it. | |
6983 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 6984 | used the passed type. */ |
c906108c SS |
6985 | |
6986 | static struct symbol * | |
e7c27a73 | 6987 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 6988 | { |
e7c27a73 | 6989 | struct objfile *objfile = cu->objfile; |
c906108c SS |
6990 | struct symbol *sym = NULL; |
6991 | char *name; | |
6992 | struct attribute *attr = NULL; | |
6993 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
6994 | CORE_ADDR baseaddr; |
6995 | ||
6996 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 6997 | |
5c4e30ca | 6998 | if (die->tag != DW_TAG_namespace) |
e142c38c | 6999 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
7000 | else |
7001 | name = TYPE_NAME (type); | |
7002 | ||
c906108c SS |
7003 | if (name) |
7004 | { | |
4a146b47 | 7005 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
7006 | sizeof (struct symbol)); |
7007 | OBJSTAT (objfile, n_syms++); | |
7008 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
7009 | |
7010 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 7011 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 7012 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
7013 | |
7014 | /* Default assumptions. | |
c5aa993b | 7015 | Use the passed type or decode it from the die. */ |
176620f1 | 7016 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
875dc2fc | 7017 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
7018 | if (type != NULL) |
7019 | SYMBOL_TYPE (sym) = type; | |
7020 | else | |
e7c27a73 | 7021 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 7022 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
7023 | if (attr) |
7024 | { | |
7025 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
7026 | } | |
c906108c SS |
7027 | switch (die->tag) |
7028 | { | |
7029 | case DW_TAG_label: | |
e142c38c | 7030 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
7031 | if (attr) |
7032 | { | |
7033 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
7034 | } | |
7035 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
7036 | break; | |
7037 | case DW_TAG_subprogram: | |
7038 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
7039 | finish_block. */ | |
7040 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 7041 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
7042 | if (attr2 && (DW_UNSND (attr2) != 0)) |
7043 | { | |
7044 | add_symbol_to_list (sym, &global_symbols); | |
7045 | } | |
7046 | else | |
7047 | { | |
e142c38c | 7048 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7049 | } |
7050 | break; | |
7051 | case DW_TAG_variable: | |
7052 | /* Compilation with minimal debug info may result in variables | |
7053 | with missing type entries. Change the misleading `void' type | |
7054 | to something sensible. */ | |
7055 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
7056 | SYMBOL_TYPE (sym) = init_type (TYPE_CODE_INT, | |
7057 | TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
7058 | "<variable, no debug info>", | |
7059 | objfile); | |
e142c38c | 7060 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7061 | if (attr) |
7062 | { | |
e7c27a73 | 7063 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 7064 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
7065 | if (attr2 && (DW_UNSND (attr2) != 0)) |
7066 | add_symbol_to_list (sym, &global_symbols); | |
7067 | else | |
e142c38c | 7068 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7069 | break; |
7070 | } | |
e142c38c | 7071 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7072 | if (attr) |
7073 | { | |
e7c27a73 | 7074 | var_decode_location (attr, sym, cu); |
e142c38c | 7075 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7076 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 7077 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 7078 | else |
e142c38c | 7079 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7080 | } |
7081 | else | |
7082 | { | |
7083 | /* We do not know the address of this symbol. | |
c5aa993b JM |
7084 | If it is an external symbol and we have type information |
7085 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
7086 | The address of the variable will then be determined from | |
7087 | the minimal symbol table whenever the variable is | |
7088 | referenced. */ | |
e142c38c | 7089 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 7090 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 7091 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
7092 | { |
7093 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
7094 | add_symbol_to_list (sym, &global_symbols); | |
7095 | } | |
7096 | } | |
7097 | break; | |
7098 | case DW_TAG_formal_parameter: | |
e142c38c | 7099 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
7100 | if (attr) |
7101 | { | |
e7c27a73 | 7102 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
7103 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
7104 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
7105 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 7106 | } |
e142c38c | 7107 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7108 | if (attr) |
7109 | { | |
e7c27a73 | 7110 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7111 | } |
e142c38c | 7112 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7113 | break; |
7114 | case DW_TAG_unspecified_parameters: | |
7115 | /* From varargs functions; gdb doesn't seem to have any | |
7116 | interest in this information, so just ignore it for now. | |
7117 | (FIXME?) */ | |
7118 | break; | |
7119 | case DW_TAG_class_type: | |
7120 | case DW_TAG_structure_type: | |
7121 | case DW_TAG_union_type: | |
72019c9c | 7122 | case DW_TAG_set_type: |
c906108c SS |
7123 | case DW_TAG_enumeration_type: |
7124 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 7125 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 7126 | |
63d06c5c DC |
7127 | /* Make sure that the symbol includes appropriate enclosing |
7128 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 7129 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
7130 | the type. */ |
7131 | ||
987504bb JJ |
7132 | if (cu->language == language_cplus |
7133 | || cu->language == language_java) | |
c906108c | 7134 | { |
63d06c5c DC |
7135 | struct type *type = SYMBOL_TYPE (sym); |
7136 | ||
7137 | if (TYPE_TAG_NAME (type) != NULL) | |
7138 | { | |
7139 | /* FIXME: carlton/2003-11-10: Should this use | |
7140 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
7141 | arises further down in this function.) */ |
7142 | /* The type's name is already allocated along with | |
7143 | this objfile, so we don't need to duplicate it | |
7144 | for the symbol. */ | |
7145 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 7146 | } |
c906108c | 7147 | } |
63d06c5c DC |
7148 | |
7149 | { | |
987504bb | 7150 | /* NOTE: carlton/2003-11-10: C++ and Java class symbols shouldn't |
63d06c5c DC |
7151 | really ever be static objects: otherwise, if you try |
7152 | to, say, break of a class's method and you're in a file | |
7153 | which doesn't mention that class, it won't work unless | |
7154 | the check for all static symbols in lookup_symbol_aux | |
7155 | saves you. See the OtherFileClass tests in | |
7156 | gdb.c++/namespace.exp. */ | |
7157 | ||
7158 | struct pending **list_to_add; | |
7159 | ||
e142c38c | 7160 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7161 | && (cu->language == language_cplus |
7162 | || cu->language == language_java) | |
e142c38c | 7163 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7164 | |
7165 | add_symbol_to_list (sym, list_to_add); | |
7166 | ||
7167 | /* The semantics of C++ state that "struct foo { ... }" also | |
987504bb JJ |
7168 | defines a typedef for "foo". A Java class declaration also |
7169 | defines a typedef for the class. Synthesize a typedef symbol | |
7170 | so that "ptype foo" works as expected. */ | |
7171 | if (cu->language == language_cplus | |
7172 | || cu->language == language_java) | |
63d06c5c DC |
7173 | { |
7174 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 7175 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
7176 | sizeof (struct symbol)); |
7177 | *typedef_sym = *sym; | |
7178 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
d8151005 DJ |
7179 | /* The symbol's name is already allocated along with |
7180 | this objfile, so we don't need to duplicate it for | |
7181 | the type. */ | |
63d06c5c | 7182 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
77ef991d | 7183 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); |
63d06c5c DC |
7184 | add_symbol_to_list (typedef_sym, list_to_add); |
7185 | } | |
7186 | } | |
c906108c SS |
7187 | break; |
7188 | case DW_TAG_typedef: | |
63d06c5c DC |
7189 | if (processing_has_namespace_info |
7190 | && processing_current_prefix[0] != '\0') | |
7191 | { | |
987504bb JJ |
7192 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7193 | processing_current_prefix, | |
7194 | name, cu); | |
63d06c5c DC |
7195 | } |
7196 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7197 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 7198 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 7199 | break; |
c906108c | 7200 | case DW_TAG_base_type: |
a02abb62 | 7201 | case DW_TAG_subrange_type: |
c906108c | 7202 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 7203 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 7204 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
7205 | break; |
7206 | case DW_TAG_enumerator: | |
63d06c5c DC |
7207 | if (processing_has_namespace_info |
7208 | && processing_current_prefix[0] != '\0') | |
7209 | { | |
987504bb JJ |
7210 | SYMBOL_LINKAGE_NAME (sym) = typename_concat (&objfile->objfile_obstack, |
7211 | processing_current_prefix, | |
7212 | name, cu); | |
63d06c5c | 7213 | } |
e142c38c | 7214 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
7215 | if (attr) |
7216 | { | |
e7c27a73 | 7217 | dwarf2_const_value (attr, sym, cu); |
c906108c | 7218 | } |
63d06c5c DC |
7219 | { |
7220 | /* NOTE: carlton/2003-11-10: See comment above in the | |
7221 | DW_TAG_class_type, etc. block. */ | |
7222 | ||
7223 | struct pending **list_to_add; | |
7224 | ||
e142c38c | 7225 | list_to_add = (cu->list_in_scope == &file_symbols |
987504bb JJ |
7226 | && (cu->language == language_cplus |
7227 | || cu->language == language_java) | |
e142c38c | 7228 | ? &global_symbols : cu->list_in_scope); |
63d06c5c DC |
7229 | |
7230 | add_symbol_to_list (sym, list_to_add); | |
7231 | } | |
c906108c | 7232 | break; |
5c4e30ca DC |
7233 | case DW_TAG_namespace: |
7234 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
7235 | add_symbol_to_list (sym, &global_symbols); | |
7236 | break; | |
c906108c SS |
7237 | default: |
7238 | /* Not a tag we recognize. Hopefully we aren't processing | |
7239 | trash data, but since we must specifically ignore things | |
7240 | we don't recognize, there is nothing else we should do at | |
7241 | this point. */ | |
e2e0b3e5 | 7242 | complaint (&symfile_complaints, _("unsupported tag: '%s'"), |
4d3c2250 | 7243 | dwarf_tag_name (die->tag)); |
c906108c SS |
7244 | break; |
7245 | } | |
7246 | } | |
7247 | return (sym); | |
7248 | } | |
7249 | ||
7250 | /* Copy constant value from an attribute to a symbol. */ | |
7251 | ||
7252 | static void | |
107d2387 | 7253 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 7254 | struct dwarf2_cu *cu) |
c906108c | 7255 | { |
e7c27a73 DJ |
7256 | struct objfile *objfile = cu->objfile; |
7257 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7258 | struct dwarf_block *blk; |
7259 | ||
7260 | switch (attr->form) | |
7261 | { | |
7262 | case DW_FORM_addr: | |
107d2387 | 7263 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 7264 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7265 | cu_header->addr_size, |
7266 | TYPE_LENGTH (SYMBOL_TYPE | |
7267 | (sym))); | |
4e38b386 | 7268 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7269 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
7270 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
7271 | it's body - store_unsigned_integer. */ | |
7272 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
7273 | DW_ADDR (attr)); | |
c906108c SS |
7274 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
7275 | break; | |
7276 | case DW_FORM_block1: | |
7277 | case DW_FORM_block2: | |
7278 | case DW_FORM_block4: | |
7279 | case DW_FORM_block: | |
7280 | blk = DW_BLOCK (attr); | |
7281 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 7282 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
7283 | blk->size, |
7284 | TYPE_LENGTH (SYMBOL_TYPE | |
7285 | (sym))); | |
4e38b386 | 7286 | SYMBOL_VALUE_BYTES (sym) = |
4a146b47 | 7287 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
7288 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
7289 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
7290 | break; | |
2df3850c JM |
7291 | |
7292 | /* The DW_AT_const_value attributes are supposed to carry the | |
7293 | symbol's value "represented as it would be on the target | |
7294 | architecture." By the time we get here, it's already been | |
7295 | converted to host endianness, so we just need to sign- or | |
7296 | zero-extend it as appropriate. */ | |
7297 | case DW_FORM_data1: | |
7298 | dwarf2_const_value_data (attr, sym, 8); | |
7299 | break; | |
c906108c | 7300 | case DW_FORM_data2: |
2df3850c JM |
7301 | dwarf2_const_value_data (attr, sym, 16); |
7302 | break; | |
c906108c | 7303 | case DW_FORM_data4: |
2df3850c JM |
7304 | dwarf2_const_value_data (attr, sym, 32); |
7305 | break; | |
c906108c | 7306 | case DW_FORM_data8: |
2df3850c JM |
7307 | dwarf2_const_value_data (attr, sym, 64); |
7308 | break; | |
7309 | ||
c906108c | 7310 | case DW_FORM_sdata: |
2df3850c JM |
7311 | SYMBOL_VALUE (sym) = DW_SND (attr); |
7312 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7313 | break; | |
7314 | ||
c906108c SS |
7315 | case DW_FORM_udata: |
7316 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
7317 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7318 | break; | |
2df3850c | 7319 | |
c906108c | 7320 | default: |
4d3c2250 | 7321 | complaint (&symfile_complaints, |
e2e0b3e5 | 7322 | _("unsupported const value attribute form: '%s'"), |
4d3c2250 | 7323 | dwarf_form_name (attr->form)); |
c906108c SS |
7324 | SYMBOL_VALUE (sym) = 0; |
7325 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7326 | break; | |
7327 | } | |
7328 | } | |
7329 | ||
2df3850c JM |
7330 | |
7331 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
7332 | or zero-extend it as appropriate for the symbol's type. */ | |
7333 | static void | |
7334 | dwarf2_const_value_data (struct attribute *attr, | |
7335 | struct symbol *sym, | |
7336 | int bits) | |
7337 | { | |
7338 | LONGEST l = DW_UNSND (attr); | |
7339 | ||
7340 | if (bits < sizeof (l) * 8) | |
7341 | { | |
7342 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
7343 | l &= ((LONGEST) 1 << bits) - 1; | |
7344 | else | |
bf9198f1 | 7345 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
7346 | } |
7347 | ||
7348 | SYMBOL_VALUE (sym) = l; | |
7349 | SYMBOL_CLASS (sym) = LOC_CONST; | |
7350 | } | |
7351 | ||
7352 | ||
c906108c SS |
7353 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
7354 | ||
7355 | static struct type * | |
e7c27a73 | 7356 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7357 | { |
7358 | struct type *type; | |
7359 | struct attribute *type_attr; | |
7360 | struct die_info *type_die; | |
c906108c | 7361 | |
e142c38c | 7362 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
7363 | if (!type_attr) |
7364 | { | |
7365 | /* A missing DW_AT_type represents a void type. */ | |
e142c38c | 7366 | return dwarf2_fundamental_type (cu->objfile, FT_VOID, cu); |
c906108c SS |
7367 | } |
7368 | else | |
10b3939b DJ |
7369 | type_die = follow_die_ref (die, type_attr, cu); |
7370 | ||
e7c27a73 | 7371 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7372 | if (!type) |
7373 | { | |
7374 | dump_die (type_die); | |
8a3fe4f8 | 7375 | error (_("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]"), |
e7c27a73 | 7376 | cu->objfile->name); |
c906108c SS |
7377 | } |
7378 | return type; | |
7379 | } | |
7380 | ||
7381 | /* Return the containing type of the die in question using its | |
7382 | DW_AT_containing_type attribute. */ | |
7383 | ||
7384 | static struct type * | |
e7c27a73 | 7385 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7386 | { |
7387 | struct type *type = NULL; | |
7388 | struct attribute *type_attr; | |
7389 | struct die_info *type_die = NULL; | |
c906108c | 7390 | |
e142c38c | 7391 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
7392 | if (type_attr) |
7393 | { | |
10b3939b | 7394 | type_die = follow_die_ref (die, type_attr, cu); |
e7c27a73 | 7395 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
7396 | } |
7397 | if (!type) | |
7398 | { | |
7399 | if (type_die) | |
7400 | dump_die (type_die); | |
8a3fe4f8 | 7401 | error (_("Dwarf Error: Problem turning containing type into gdb type [in module %s]"), |
e7c27a73 | 7402 | cu->objfile->name); |
c906108c SS |
7403 | } |
7404 | return type; | |
7405 | } | |
7406 | ||
c906108c | 7407 | static struct type * |
e7c27a73 | 7408 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7409 | { |
7410 | if (die->type) | |
7411 | { | |
7412 | return die->type; | |
7413 | } | |
7414 | else | |
7415 | { | |
e7c27a73 | 7416 | read_type_die (die, cu); |
c906108c SS |
7417 | if (!die->type) |
7418 | { | |
7419 | dump_die (die); | |
8a3fe4f8 | 7420 | error (_("Dwarf Error: Cannot find type of die [in module %s]"), |
e7c27a73 | 7421 | cu->objfile->name); |
c906108c SS |
7422 | } |
7423 | return die->type; | |
7424 | } | |
7425 | } | |
7426 | ||
7427 | static void | |
e7c27a73 | 7428 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 7429 | { |
e142c38c | 7430 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
7431 | const char *old_prefix = processing_current_prefix; |
7432 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
7433 | processing_current_prefix = prefix; | |
7434 | ||
c906108c SS |
7435 | switch (die->tag) |
7436 | { | |
7437 | case DW_TAG_class_type: | |
7438 | case DW_TAG_structure_type: | |
7439 | case DW_TAG_union_type: | |
134d01f1 | 7440 | read_structure_type (die, cu); |
c906108c SS |
7441 | break; |
7442 | case DW_TAG_enumeration_type: | |
134d01f1 | 7443 | read_enumeration_type (die, cu); |
c906108c SS |
7444 | break; |
7445 | case DW_TAG_subprogram: | |
7446 | case DW_TAG_subroutine_type: | |
e7c27a73 | 7447 | read_subroutine_type (die, cu); |
c906108c SS |
7448 | break; |
7449 | case DW_TAG_array_type: | |
e7c27a73 | 7450 | read_array_type (die, cu); |
c906108c | 7451 | break; |
72019c9c GM |
7452 | case DW_TAG_set_type: |
7453 | read_set_type (die, cu); | |
7454 | break; | |
c906108c | 7455 | case DW_TAG_pointer_type: |
e7c27a73 | 7456 | read_tag_pointer_type (die, cu); |
c906108c SS |
7457 | break; |
7458 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 7459 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
7460 | break; |
7461 | case DW_TAG_reference_type: | |
e7c27a73 | 7462 | read_tag_reference_type (die, cu); |
c906108c SS |
7463 | break; |
7464 | case DW_TAG_const_type: | |
e7c27a73 | 7465 | read_tag_const_type (die, cu); |
c906108c SS |
7466 | break; |
7467 | case DW_TAG_volatile_type: | |
e7c27a73 | 7468 | read_tag_volatile_type (die, cu); |
c906108c SS |
7469 | break; |
7470 | case DW_TAG_string_type: | |
e7c27a73 | 7471 | read_tag_string_type (die, cu); |
c906108c SS |
7472 | break; |
7473 | case DW_TAG_typedef: | |
e7c27a73 | 7474 | read_typedef (die, cu); |
c906108c | 7475 | break; |
a02abb62 JB |
7476 | case DW_TAG_subrange_type: |
7477 | read_subrange_type (die, cu); | |
7478 | break; | |
c906108c | 7479 | case DW_TAG_base_type: |
e7c27a73 | 7480 | read_base_type (die, cu); |
c906108c | 7481 | break; |
81a17f79 JB |
7482 | case DW_TAG_unspecified_type: |
7483 | read_unspecified_type (die, cu); | |
7484 | break; | |
c906108c | 7485 | default: |
a1f5b845 | 7486 | complaint (&symfile_complaints, _("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 7487 | dwarf_tag_name (die->tag)); |
c906108c SS |
7488 | break; |
7489 | } | |
63d06c5c DC |
7490 | |
7491 | processing_current_prefix = old_prefix; | |
7492 | do_cleanups (back_to); | |
7493 | } | |
7494 | ||
fdde2d81 DC |
7495 | /* Return the name of the namespace/class that DIE is defined within, |
7496 | or "" if we can't tell. The caller should xfree the result. */ | |
7497 | ||
7498 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
7499 | therein) for an example of how to use this function to deal with | |
7500 | DW_AT_specification. */ | |
7501 | ||
7502 | static char * | |
e142c38c | 7503 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
7504 | { |
7505 | struct die_info *parent; | |
7506 | ||
987504bb JJ |
7507 | if (cu->language != language_cplus |
7508 | && cu->language != language_java) | |
63d06c5c DC |
7509 | return NULL; |
7510 | ||
7511 | parent = die->parent; | |
7512 | ||
7513 | if (parent == NULL) | |
7514 | { | |
8176b9b8 | 7515 | return xstrdup (""); |
63d06c5c DC |
7516 | } |
7517 | else | |
7518 | { | |
63d06c5c DC |
7519 | switch (parent->tag) { |
7520 | case DW_TAG_namespace: | |
7521 | { | |
8176b9b8 DC |
7522 | /* FIXME: carlton/2004-03-05: Should I follow extension dies |
7523 | before doing this check? */ | |
7524 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) | |
7525 | { | |
7526 | return xstrdup (TYPE_TAG_NAME (parent->type)); | |
7527 | } | |
7528 | else | |
7529 | { | |
7530 | int dummy; | |
7531 | char *parent_prefix = determine_prefix (parent, cu); | |
987504bb | 7532 | char *retval = typename_concat (NULL, parent_prefix, |
8176b9b8 | 7533 | namespace_name (parent, &dummy, |
987504bb JJ |
7534 | cu), |
7535 | cu); | |
8176b9b8 DC |
7536 | xfree (parent_prefix); |
7537 | return retval; | |
7538 | } | |
63d06c5c DC |
7539 | } |
7540 | break; | |
7541 | case DW_TAG_class_type: | |
7542 | case DW_TAG_structure_type: | |
7543 | { | |
8176b9b8 | 7544 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) |
63d06c5c | 7545 | { |
8176b9b8 | 7546 | return xstrdup (TYPE_TAG_NAME (parent->type)); |
63d06c5c DC |
7547 | } |
7548 | else | |
8176b9b8 DC |
7549 | { |
7550 | const char *old_prefix = processing_current_prefix; | |
7551 | char *new_prefix = determine_prefix (parent, cu); | |
7552 | char *retval; | |
7553 | ||
7554 | processing_current_prefix = new_prefix; | |
7555 | retval = determine_class_name (parent, cu); | |
7556 | processing_current_prefix = old_prefix; | |
7557 | ||
7558 | xfree (new_prefix); | |
7559 | return retval; | |
7560 | } | |
63d06c5c | 7561 | } |
63d06c5c | 7562 | default: |
8176b9b8 | 7563 | return determine_prefix (parent, cu); |
63d06c5c | 7564 | } |
63d06c5c DC |
7565 | } |
7566 | } | |
7567 | ||
987504bb JJ |
7568 | /* Return a newly-allocated string formed by concatenating PREFIX and |
7569 | SUFFIX with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
7570 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, | |
7571 | perform an obconcat, otherwise allocate storage for the result. The CU argument | |
7572 | is used to determine the language and hence, the appropriate separator. */ | |
7573 | ||
7574 | #define MAX_SEP_LEN 2 /* sizeof ("::") */ | |
63d06c5c DC |
7575 | |
7576 | static char * | |
987504bb JJ |
7577 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
7578 | struct dwarf2_cu *cu) | |
63d06c5c | 7579 | { |
987504bb | 7580 | char *sep; |
63d06c5c | 7581 | |
987504bb JJ |
7582 | if (suffix == NULL || suffix[0] == '\0' || prefix == NULL || prefix[0] == '\0') |
7583 | sep = ""; | |
7584 | else if (cu->language == language_java) | |
7585 | sep = "."; | |
7586 | else | |
7587 | sep = "::"; | |
63d06c5c | 7588 | |
987504bb JJ |
7589 | if (obs == NULL) |
7590 | { | |
7591 | char *retval = xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1); | |
7592 | retval[0] = '\0'; | |
7593 | ||
7594 | if (prefix) | |
7595 | { | |
7596 | strcpy (retval, prefix); | |
7597 | strcat (retval, sep); | |
7598 | } | |
7599 | if (suffix) | |
7600 | strcat (retval, suffix); | |
7601 | ||
63d06c5c DC |
7602 | return retval; |
7603 | } | |
987504bb JJ |
7604 | else |
7605 | { | |
7606 | /* We have an obstack. */ | |
7607 | return obconcat (obs, prefix, sep, suffix); | |
7608 | } | |
63d06c5c DC |
7609 | } |
7610 | ||
c906108c | 7611 | static struct type * |
e7c27a73 | 7612 | dwarf_base_type (int encoding, int size, struct dwarf2_cu *cu) |
c906108c | 7613 | { |
e7c27a73 DJ |
7614 | struct objfile *objfile = cu->objfile; |
7615 | ||
c906108c SS |
7616 | /* FIXME - this should not produce a new (struct type *) |
7617 | every time. It should cache base types. */ | |
7618 | struct type *type; | |
7619 | switch (encoding) | |
7620 | { | |
7621 | case DW_ATE_address: | |
e142c38c | 7622 | type = dwarf2_fundamental_type (objfile, FT_VOID, cu); |
c906108c SS |
7623 | return type; |
7624 | case DW_ATE_boolean: | |
e142c38c | 7625 | type = dwarf2_fundamental_type (objfile, FT_BOOLEAN, cu); |
c906108c SS |
7626 | return type; |
7627 | case DW_ATE_complex_float: | |
7628 | if (size == 16) | |
7629 | { | |
e142c38c | 7630 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_COMPLEX, cu); |
c906108c SS |
7631 | } |
7632 | else | |
7633 | { | |
e142c38c | 7634 | type = dwarf2_fundamental_type (objfile, FT_COMPLEX, cu); |
c906108c SS |
7635 | } |
7636 | return type; | |
7637 | case DW_ATE_float: | |
7638 | if (size == 8) | |
7639 | { | |
e142c38c | 7640 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
c906108c SS |
7641 | } |
7642 | else | |
7643 | { | |
e142c38c | 7644 | type = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
c906108c SS |
7645 | } |
7646 | return type; | |
7647 | case DW_ATE_signed: | |
7648 | switch (size) | |
7649 | { | |
7650 | case 1: | |
e142c38c | 7651 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
7652 | break; |
7653 | case 2: | |
e142c38c | 7654 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_SHORT, cu); |
c906108c SS |
7655 | break; |
7656 | default: | |
7657 | case 4: | |
e142c38c | 7658 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
7659 | break; |
7660 | } | |
7661 | return type; | |
7662 | case DW_ATE_signed_char: | |
e142c38c | 7663 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
7664 | return type; |
7665 | case DW_ATE_unsigned: | |
7666 | switch (size) | |
7667 | { | |
7668 | case 1: | |
e142c38c | 7669 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
7670 | break; |
7671 | case 2: | |
e142c38c | 7672 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_SHORT, cu); |
c906108c SS |
7673 | break; |
7674 | default: | |
7675 | case 4: | |
e142c38c | 7676 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_INTEGER, cu); |
c906108c SS |
7677 | break; |
7678 | } | |
7679 | return type; | |
7680 | case DW_ATE_unsigned_char: | |
e142c38c | 7681 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
7682 | return type; |
7683 | default: | |
e142c38c | 7684 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
7685 | return type; |
7686 | } | |
7687 | } | |
7688 | ||
7689 | #if 0 | |
7690 | struct die_info * | |
fba45db2 | 7691 | copy_die (struct die_info *old_die) |
c906108c SS |
7692 | { |
7693 | struct die_info *new_die; | |
7694 | int i, num_attrs; | |
7695 | ||
7696 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
7697 | memset (new_die, 0, sizeof (struct die_info)); | |
7698 | ||
7699 | new_die->tag = old_die->tag; | |
7700 | new_die->has_children = old_die->has_children; | |
7701 | new_die->abbrev = old_die->abbrev; | |
7702 | new_die->offset = old_die->offset; | |
7703 | new_die->type = NULL; | |
7704 | ||
7705 | num_attrs = old_die->num_attrs; | |
7706 | new_die->num_attrs = num_attrs; | |
7707 | new_die->attrs = (struct attribute *) | |
7708 | xmalloc (num_attrs * sizeof (struct attribute)); | |
7709 | ||
7710 | for (i = 0; i < old_die->num_attrs; ++i) | |
7711 | { | |
7712 | new_die->attrs[i].name = old_die->attrs[i].name; | |
7713 | new_die->attrs[i].form = old_die->attrs[i].form; | |
7714 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
7715 | } | |
7716 | ||
7717 | new_die->next = NULL; | |
7718 | return new_die; | |
7719 | } | |
7720 | #endif | |
7721 | ||
7722 | /* Return sibling of die, NULL if no sibling. */ | |
7723 | ||
f9aca02d | 7724 | static struct die_info * |
fba45db2 | 7725 | sibling_die (struct die_info *die) |
c906108c | 7726 | { |
639d11d3 | 7727 | return die->sibling; |
c906108c SS |
7728 | } |
7729 | ||
7730 | /* Get linkage name of a die, return NULL if not found. */ | |
7731 | ||
7732 | static char * | |
e142c38c | 7733 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
7734 | { |
7735 | struct attribute *attr; | |
7736 | ||
e142c38c | 7737 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
7738 | if (attr && DW_STRING (attr)) |
7739 | return DW_STRING (attr); | |
e142c38c | 7740 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
7741 | if (attr && DW_STRING (attr)) |
7742 | return DW_STRING (attr); | |
7743 | return NULL; | |
7744 | } | |
7745 | ||
9219021c DC |
7746 | /* Get name of a die, return NULL if not found. */ |
7747 | ||
7748 | static char * | |
e142c38c | 7749 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7750 | { |
7751 | struct attribute *attr; | |
7752 | ||
e142c38c | 7753 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
7754 | if (attr && DW_STRING (attr)) |
7755 | return DW_STRING (attr); | |
7756 | return NULL; | |
7757 | } | |
7758 | ||
7759 | /* Return the die that this die in an extension of, or NULL if there | |
7760 | is none. */ | |
7761 | ||
7762 | static struct die_info * | |
e142c38c | 7763 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
7764 | { |
7765 | struct attribute *attr; | |
9219021c | 7766 | |
e142c38c | 7767 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
7768 | if (attr == NULL) |
7769 | return NULL; | |
7770 | ||
10b3939b | 7771 | return follow_die_ref (die, attr, cu); |
9219021c DC |
7772 | } |
7773 | ||
c906108c SS |
7774 | /* Convert a DIE tag into its string name. */ |
7775 | ||
7776 | static char * | |
aa1ee363 | 7777 | dwarf_tag_name (unsigned tag) |
c906108c SS |
7778 | { |
7779 | switch (tag) | |
7780 | { | |
7781 | case DW_TAG_padding: | |
7782 | return "DW_TAG_padding"; | |
7783 | case DW_TAG_array_type: | |
7784 | return "DW_TAG_array_type"; | |
7785 | case DW_TAG_class_type: | |
7786 | return "DW_TAG_class_type"; | |
7787 | case DW_TAG_entry_point: | |
7788 | return "DW_TAG_entry_point"; | |
7789 | case DW_TAG_enumeration_type: | |
7790 | return "DW_TAG_enumeration_type"; | |
7791 | case DW_TAG_formal_parameter: | |
7792 | return "DW_TAG_formal_parameter"; | |
7793 | case DW_TAG_imported_declaration: | |
7794 | return "DW_TAG_imported_declaration"; | |
7795 | case DW_TAG_label: | |
7796 | return "DW_TAG_label"; | |
7797 | case DW_TAG_lexical_block: | |
7798 | return "DW_TAG_lexical_block"; | |
7799 | case DW_TAG_member: | |
7800 | return "DW_TAG_member"; | |
7801 | case DW_TAG_pointer_type: | |
7802 | return "DW_TAG_pointer_type"; | |
7803 | case DW_TAG_reference_type: | |
7804 | return "DW_TAG_reference_type"; | |
7805 | case DW_TAG_compile_unit: | |
7806 | return "DW_TAG_compile_unit"; | |
7807 | case DW_TAG_string_type: | |
7808 | return "DW_TAG_string_type"; | |
7809 | case DW_TAG_structure_type: | |
7810 | return "DW_TAG_structure_type"; | |
7811 | case DW_TAG_subroutine_type: | |
7812 | return "DW_TAG_subroutine_type"; | |
7813 | case DW_TAG_typedef: | |
7814 | return "DW_TAG_typedef"; | |
7815 | case DW_TAG_union_type: | |
7816 | return "DW_TAG_union_type"; | |
7817 | case DW_TAG_unspecified_parameters: | |
7818 | return "DW_TAG_unspecified_parameters"; | |
7819 | case DW_TAG_variant: | |
7820 | return "DW_TAG_variant"; | |
7821 | case DW_TAG_common_block: | |
7822 | return "DW_TAG_common_block"; | |
7823 | case DW_TAG_common_inclusion: | |
7824 | return "DW_TAG_common_inclusion"; | |
7825 | case DW_TAG_inheritance: | |
7826 | return "DW_TAG_inheritance"; | |
7827 | case DW_TAG_inlined_subroutine: | |
7828 | return "DW_TAG_inlined_subroutine"; | |
7829 | case DW_TAG_module: | |
7830 | return "DW_TAG_module"; | |
7831 | case DW_TAG_ptr_to_member_type: | |
7832 | return "DW_TAG_ptr_to_member_type"; | |
7833 | case DW_TAG_set_type: | |
7834 | return "DW_TAG_set_type"; | |
7835 | case DW_TAG_subrange_type: | |
7836 | return "DW_TAG_subrange_type"; | |
7837 | case DW_TAG_with_stmt: | |
7838 | return "DW_TAG_with_stmt"; | |
7839 | case DW_TAG_access_declaration: | |
7840 | return "DW_TAG_access_declaration"; | |
7841 | case DW_TAG_base_type: | |
7842 | return "DW_TAG_base_type"; | |
7843 | case DW_TAG_catch_block: | |
7844 | return "DW_TAG_catch_block"; | |
7845 | case DW_TAG_const_type: | |
7846 | return "DW_TAG_const_type"; | |
7847 | case DW_TAG_constant: | |
7848 | return "DW_TAG_constant"; | |
7849 | case DW_TAG_enumerator: | |
7850 | return "DW_TAG_enumerator"; | |
7851 | case DW_TAG_file_type: | |
7852 | return "DW_TAG_file_type"; | |
7853 | case DW_TAG_friend: | |
7854 | return "DW_TAG_friend"; | |
7855 | case DW_TAG_namelist: | |
7856 | return "DW_TAG_namelist"; | |
7857 | case DW_TAG_namelist_item: | |
7858 | return "DW_TAG_namelist_item"; | |
7859 | case DW_TAG_packed_type: | |
7860 | return "DW_TAG_packed_type"; | |
7861 | case DW_TAG_subprogram: | |
7862 | return "DW_TAG_subprogram"; | |
7863 | case DW_TAG_template_type_param: | |
7864 | return "DW_TAG_template_type_param"; | |
7865 | case DW_TAG_template_value_param: | |
7866 | return "DW_TAG_template_value_param"; | |
7867 | case DW_TAG_thrown_type: | |
7868 | return "DW_TAG_thrown_type"; | |
7869 | case DW_TAG_try_block: | |
7870 | return "DW_TAG_try_block"; | |
7871 | case DW_TAG_variant_part: | |
7872 | return "DW_TAG_variant_part"; | |
7873 | case DW_TAG_variable: | |
7874 | return "DW_TAG_variable"; | |
7875 | case DW_TAG_volatile_type: | |
7876 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
7877 | case DW_TAG_dwarf_procedure: |
7878 | return "DW_TAG_dwarf_procedure"; | |
7879 | case DW_TAG_restrict_type: | |
7880 | return "DW_TAG_restrict_type"; | |
7881 | case DW_TAG_interface_type: | |
7882 | return "DW_TAG_interface_type"; | |
7883 | case DW_TAG_namespace: | |
7884 | return "DW_TAG_namespace"; | |
7885 | case DW_TAG_imported_module: | |
7886 | return "DW_TAG_imported_module"; | |
7887 | case DW_TAG_unspecified_type: | |
7888 | return "DW_TAG_unspecified_type"; | |
7889 | case DW_TAG_partial_unit: | |
7890 | return "DW_TAG_partial_unit"; | |
7891 | case DW_TAG_imported_unit: | |
7892 | return "DW_TAG_imported_unit"; | |
b7619582 GF |
7893 | case DW_TAG_condition: |
7894 | return "DW_TAG_condition"; | |
7895 | case DW_TAG_shared_type: | |
7896 | return "DW_TAG_shared_type"; | |
c906108c SS |
7897 | case DW_TAG_MIPS_loop: |
7898 | return "DW_TAG_MIPS_loop"; | |
b7619582 GF |
7899 | case DW_TAG_HP_array_descriptor: |
7900 | return "DW_TAG_HP_array_descriptor"; | |
c906108c SS |
7901 | case DW_TAG_format_label: |
7902 | return "DW_TAG_format_label"; | |
7903 | case DW_TAG_function_template: | |
7904 | return "DW_TAG_function_template"; | |
7905 | case DW_TAG_class_template: | |
7906 | return "DW_TAG_class_template"; | |
b7619582 GF |
7907 | case DW_TAG_GNU_BINCL: |
7908 | return "DW_TAG_GNU_BINCL"; | |
7909 | case DW_TAG_GNU_EINCL: | |
7910 | return "DW_TAG_GNU_EINCL"; | |
7911 | case DW_TAG_upc_shared_type: | |
7912 | return "DW_TAG_upc_shared_type"; | |
7913 | case DW_TAG_upc_strict_type: | |
7914 | return "DW_TAG_upc_strict_type"; | |
7915 | case DW_TAG_upc_relaxed_type: | |
7916 | return "DW_TAG_upc_relaxed_type"; | |
7917 | case DW_TAG_PGI_kanji_type: | |
7918 | return "DW_TAG_PGI_kanji_type"; | |
7919 | case DW_TAG_PGI_interface_block: | |
7920 | return "DW_TAG_PGI_interface_block"; | |
c906108c SS |
7921 | default: |
7922 | return "DW_TAG_<unknown>"; | |
7923 | } | |
7924 | } | |
7925 | ||
7926 | /* Convert a DWARF attribute code into its string name. */ | |
7927 | ||
7928 | static char * | |
aa1ee363 | 7929 | dwarf_attr_name (unsigned attr) |
c906108c SS |
7930 | { |
7931 | switch (attr) | |
7932 | { | |
7933 | case DW_AT_sibling: | |
7934 | return "DW_AT_sibling"; | |
7935 | case DW_AT_location: | |
7936 | return "DW_AT_location"; | |
7937 | case DW_AT_name: | |
7938 | return "DW_AT_name"; | |
7939 | case DW_AT_ordering: | |
7940 | return "DW_AT_ordering"; | |
7941 | case DW_AT_subscr_data: | |
7942 | return "DW_AT_subscr_data"; | |
7943 | case DW_AT_byte_size: | |
7944 | return "DW_AT_byte_size"; | |
7945 | case DW_AT_bit_offset: | |
7946 | return "DW_AT_bit_offset"; | |
7947 | case DW_AT_bit_size: | |
7948 | return "DW_AT_bit_size"; | |
7949 | case DW_AT_element_list: | |
7950 | return "DW_AT_element_list"; | |
7951 | case DW_AT_stmt_list: | |
7952 | return "DW_AT_stmt_list"; | |
7953 | case DW_AT_low_pc: | |
7954 | return "DW_AT_low_pc"; | |
7955 | case DW_AT_high_pc: | |
7956 | return "DW_AT_high_pc"; | |
7957 | case DW_AT_language: | |
7958 | return "DW_AT_language"; | |
7959 | case DW_AT_member: | |
7960 | return "DW_AT_member"; | |
7961 | case DW_AT_discr: | |
7962 | return "DW_AT_discr"; | |
7963 | case DW_AT_discr_value: | |
7964 | return "DW_AT_discr_value"; | |
7965 | case DW_AT_visibility: | |
7966 | return "DW_AT_visibility"; | |
7967 | case DW_AT_import: | |
7968 | return "DW_AT_import"; | |
7969 | case DW_AT_string_length: | |
7970 | return "DW_AT_string_length"; | |
7971 | case DW_AT_common_reference: | |
7972 | return "DW_AT_common_reference"; | |
7973 | case DW_AT_comp_dir: | |
7974 | return "DW_AT_comp_dir"; | |
7975 | case DW_AT_const_value: | |
7976 | return "DW_AT_const_value"; | |
7977 | case DW_AT_containing_type: | |
7978 | return "DW_AT_containing_type"; | |
7979 | case DW_AT_default_value: | |
7980 | return "DW_AT_default_value"; | |
7981 | case DW_AT_inline: | |
7982 | return "DW_AT_inline"; | |
7983 | case DW_AT_is_optional: | |
7984 | return "DW_AT_is_optional"; | |
7985 | case DW_AT_lower_bound: | |
7986 | return "DW_AT_lower_bound"; | |
7987 | case DW_AT_producer: | |
7988 | return "DW_AT_producer"; | |
7989 | case DW_AT_prototyped: | |
7990 | return "DW_AT_prototyped"; | |
7991 | case DW_AT_return_addr: | |
7992 | return "DW_AT_return_addr"; | |
7993 | case DW_AT_start_scope: | |
7994 | return "DW_AT_start_scope"; | |
7995 | case DW_AT_stride_size: | |
7996 | return "DW_AT_stride_size"; | |
7997 | case DW_AT_upper_bound: | |
7998 | return "DW_AT_upper_bound"; | |
7999 | case DW_AT_abstract_origin: | |
8000 | return "DW_AT_abstract_origin"; | |
8001 | case DW_AT_accessibility: | |
8002 | return "DW_AT_accessibility"; | |
8003 | case DW_AT_address_class: | |
8004 | return "DW_AT_address_class"; | |
8005 | case DW_AT_artificial: | |
8006 | return "DW_AT_artificial"; | |
8007 | case DW_AT_base_types: | |
8008 | return "DW_AT_base_types"; | |
8009 | case DW_AT_calling_convention: | |
8010 | return "DW_AT_calling_convention"; | |
8011 | case DW_AT_count: | |
8012 | return "DW_AT_count"; | |
8013 | case DW_AT_data_member_location: | |
8014 | return "DW_AT_data_member_location"; | |
8015 | case DW_AT_decl_column: | |
8016 | return "DW_AT_decl_column"; | |
8017 | case DW_AT_decl_file: | |
8018 | return "DW_AT_decl_file"; | |
8019 | case DW_AT_decl_line: | |
8020 | return "DW_AT_decl_line"; | |
8021 | case DW_AT_declaration: | |
8022 | return "DW_AT_declaration"; | |
8023 | case DW_AT_discr_list: | |
8024 | return "DW_AT_discr_list"; | |
8025 | case DW_AT_encoding: | |
8026 | return "DW_AT_encoding"; | |
8027 | case DW_AT_external: | |
8028 | return "DW_AT_external"; | |
8029 | case DW_AT_frame_base: | |
8030 | return "DW_AT_frame_base"; | |
8031 | case DW_AT_friend: | |
8032 | return "DW_AT_friend"; | |
8033 | case DW_AT_identifier_case: | |
8034 | return "DW_AT_identifier_case"; | |
8035 | case DW_AT_macro_info: | |
8036 | return "DW_AT_macro_info"; | |
8037 | case DW_AT_namelist_items: | |
8038 | return "DW_AT_namelist_items"; | |
8039 | case DW_AT_priority: | |
8040 | return "DW_AT_priority"; | |
8041 | case DW_AT_segment: | |
8042 | return "DW_AT_segment"; | |
8043 | case DW_AT_specification: | |
8044 | return "DW_AT_specification"; | |
8045 | case DW_AT_static_link: | |
8046 | return "DW_AT_static_link"; | |
8047 | case DW_AT_type: | |
8048 | return "DW_AT_type"; | |
8049 | case DW_AT_use_location: | |
8050 | return "DW_AT_use_location"; | |
8051 | case DW_AT_variable_parameter: | |
8052 | return "DW_AT_variable_parameter"; | |
8053 | case DW_AT_virtuality: | |
8054 | return "DW_AT_virtuality"; | |
8055 | case DW_AT_vtable_elem_location: | |
8056 | return "DW_AT_vtable_elem_location"; | |
b7619582 | 8057 | /* DWARF 3 values. */ |
d9fa45fe DC |
8058 | case DW_AT_allocated: |
8059 | return "DW_AT_allocated"; | |
8060 | case DW_AT_associated: | |
8061 | return "DW_AT_associated"; | |
8062 | case DW_AT_data_location: | |
8063 | return "DW_AT_data_location"; | |
8064 | case DW_AT_stride: | |
8065 | return "DW_AT_stride"; | |
8066 | case DW_AT_entry_pc: | |
8067 | return "DW_AT_entry_pc"; | |
8068 | case DW_AT_use_UTF8: | |
8069 | return "DW_AT_use_UTF8"; | |
8070 | case DW_AT_extension: | |
8071 | return "DW_AT_extension"; | |
8072 | case DW_AT_ranges: | |
8073 | return "DW_AT_ranges"; | |
8074 | case DW_AT_trampoline: | |
8075 | return "DW_AT_trampoline"; | |
8076 | case DW_AT_call_column: | |
8077 | return "DW_AT_call_column"; | |
8078 | case DW_AT_call_file: | |
8079 | return "DW_AT_call_file"; | |
8080 | case DW_AT_call_line: | |
8081 | return "DW_AT_call_line"; | |
b7619582 GF |
8082 | case DW_AT_description: |
8083 | return "DW_AT_description"; | |
8084 | case DW_AT_binary_scale: | |
8085 | return "DW_AT_binary_scale"; | |
8086 | case DW_AT_decimal_scale: | |
8087 | return "DW_AT_decimal_scale"; | |
8088 | case DW_AT_small: | |
8089 | return "DW_AT_small"; | |
8090 | case DW_AT_decimal_sign: | |
8091 | return "DW_AT_decimal_sign"; | |
8092 | case DW_AT_digit_count: | |
8093 | return "DW_AT_digit_count"; | |
8094 | case DW_AT_picture_string: | |
8095 | return "DW_AT_picture_string"; | |
8096 | case DW_AT_mutable: | |
8097 | return "DW_AT_mutable"; | |
8098 | case DW_AT_threads_scaled: | |
8099 | return "DW_AT_threads_scaled"; | |
8100 | case DW_AT_explicit: | |
8101 | return "DW_AT_explicit"; | |
8102 | case DW_AT_object_pointer: | |
8103 | return "DW_AT_object_pointer"; | |
8104 | case DW_AT_endianity: | |
8105 | return "DW_AT_endianity"; | |
8106 | case DW_AT_elemental: | |
8107 | return "DW_AT_elemental"; | |
8108 | case DW_AT_pure: | |
8109 | return "DW_AT_pure"; | |
8110 | case DW_AT_recursive: | |
8111 | return "DW_AT_recursive"; | |
c906108c | 8112 | #ifdef MIPS |
b7619582 | 8113 | /* SGI/MIPS extensions. */ |
c906108c SS |
8114 | case DW_AT_MIPS_fde: |
8115 | return "DW_AT_MIPS_fde"; | |
8116 | case DW_AT_MIPS_loop_begin: | |
8117 | return "DW_AT_MIPS_loop_begin"; | |
8118 | case DW_AT_MIPS_tail_loop_begin: | |
8119 | return "DW_AT_MIPS_tail_loop_begin"; | |
8120 | case DW_AT_MIPS_epilog_begin: | |
8121 | return "DW_AT_MIPS_epilog_begin"; | |
8122 | case DW_AT_MIPS_loop_unroll_factor: | |
8123 | return "DW_AT_MIPS_loop_unroll_factor"; | |
8124 | case DW_AT_MIPS_software_pipeline_depth: | |
8125 | return "DW_AT_MIPS_software_pipeline_depth"; | |
8126 | case DW_AT_MIPS_linkage_name: | |
8127 | return "DW_AT_MIPS_linkage_name"; | |
b7619582 GF |
8128 | case DW_AT_MIPS_stride: |
8129 | return "DW_AT_MIPS_stride"; | |
8130 | case DW_AT_MIPS_abstract_name: | |
8131 | return "DW_AT_MIPS_abstract_name"; | |
8132 | case DW_AT_MIPS_clone_origin: | |
8133 | return "DW_AT_MIPS_clone_origin"; | |
8134 | case DW_AT_MIPS_has_inlines: | |
8135 | return "DW_AT_MIPS_has_inlines"; | |
8136 | #endif | |
8137 | /* HP extensions. */ | |
8138 | case DW_AT_HP_block_index: | |
8139 | return "DW_AT_HP_block_index"; | |
8140 | case DW_AT_HP_unmodifiable: | |
8141 | return "DW_AT_HP_unmodifiable"; | |
8142 | case DW_AT_HP_actuals_stmt_list: | |
8143 | return "DW_AT_HP_actuals_stmt_list"; | |
8144 | case DW_AT_HP_proc_per_section: | |
8145 | return "DW_AT_HP_proc_per_section"; | |
8146 | case DW_AT_HP_raw_data_ptr: | |
8147 | return "DW_AT_HP_raw_data_ptr"; | |
8148 | case DW_AT_HP_pass_by_reference: | |
8149 | return "DW_AT_HP_pass_by_reference"; | |
8150 | case DW_AT_HP_opt_level: | |
8151 | return "DW_AT_HP_opt_level"; | |
8152 | case DW_AT_HP_prof_version_id: | |
8153 | return "DW_AT_HP_prof_version_id"; | |
8154 | case DW_AT_HP_opt_flags: | |
8155 | return "DW_AT_HP_opt_flags"; | |
8156 | case DW_AT_HP_cold_region_low_pc: | |
8157 | return "DW_AT_HP_cold_region_low_pc"; | |
8158 | case DW_AT_HP_cold_region_high_pc: | |
8159 | return "DW_AT_HP_cold_region_high_pc"; | |
8160 | case DW_AT_HP_all_variables_modifiable: | |
8161 | return "DW_AT_HP_all_variables_modifiable"; | |
8162 | case DW_AT_HP_linkage_name: | |
8163 | return "DW_AT_HP_linkage_name"; | |
8164 | case DW_AT_HP_prof_flags: | |
8165 | return "DW_AT_HP_prof_flags"; | |
8166 | /* GNU extensions. */ | |
c906108c SS |
8167 | case DW_AT_sf_names: |
8168 | return "DW_AT_sf_names"; | |
8169 | case DW_AT_src_info: | |
8170 | return "DW_AT_src_info"; | |
8171 | case DW_AT_mac_info: | |
8172 | return "DW_AT_mac_info"; | |
8173 | case DW_AT_src_coords: | |
8174 | return "DW_AT_src_coords"; | |
8175 | case DW_AT_body_begin: | |
8176 | return "DW_AT_body_begin"; | |
8177 | case DW_AT_body_end: | |
8178 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
8179 | case DW_AT_GNU_vector: |
8180 | return "DW_AT_GNU_vector"; | |
b7619582 GF |
8181 | /* VMS extensions. */ |
8182 | case DW_AT_VMS_rtnbeg_pd_address: | |
8183 | return "DW_AT_VMS_rtnbeg_pd_address"; | |
8184 | /* UPC extension. */ | |
8185 | case DW_AT_upc_threads_scaled: | |
8186 | return "DW_AT_upc_threads_scaled"; | |
8187 | /* PGI (STMicroelectronics) extensions. */ | |
8188 | case DW_AT_PGI_lbase: | |
8189 | return "DW_AT_PGI_lbase"; | |
8190 | case DW_AT_PGI_soffset: | |
8191 | return "DW_AT_PGI_soffset"; | |
8192 | case DW_AT_PGI_lstride: | |
8193 | return "DW_AT_PGI_lstride"; | |
c906108c SS |
8194 | default: |
8195 | return "DW_AT_<unknown>"; | |
8196 | } | |
8197 | } | |
8198 | ||
8199 | /* Convert a DWARF value form code into its string name. */ | |
8200 | ||
8201 | static char * | |
aa1ee363 | 8202 | dwarf_form_name (unsigned form) |
c906108c SS |
8203 | { |
8204 | switch (form) | |
8205 | { | |
8206 | case DW_FORM_addr: | |
8207 | return "DW_FORM_addr"; | |
8208 | case DW_FORM_block2: | |
8209 | return "DW_FORM_block2"; | |
8210 | case DW_FORM_block4: | |
8211 | return "DW_FORM_block4"; | |
8212 | case DW_FORM_data2: | |
8213 | return "DW_FORM_data2"; | |
8214 | case DW_FORM_data4: | |
8215 | return "DW_FORM_data4"; | |
8216 | case DW_FORM_data8: | |
8217 | return "DW_FORM_data8"; | |
8218 | case DW_FORM_string: | |
8219 | return "DW_FORM_string"; | |
8220 | case DW_FORM_block: | |
8221 | return "DW_FORM_block"; | |
8222 | case DW_FORM_block1: | |
8223 | return "DW_FORM_block1"; | |
8224 | case DW_FORM_data1: | |
8225 | return "DW_FORM_data1"; | |
8226 | case DW_FORM_flag: | |
8227 | return "DW_FORM_flag"; | |
8228 | case DW_FORM_sdata: | |
8229 | return "DW_FORM_sdata"; | |
8230 | case DW_FORM_strp: | |
8231 | return "DW_FORM_strp"; | |
8232 | case DW_FORM_udata: | |
8233 | return "DW_FORM_udata"; | |
8234 | case DW_FORM_ref_addr: | |
8235 | return "DW_FORM_ref_addr"; | |
8236 | case DW_FORM_ref1: | |
8237 | return "DW_FORM_ref1"; | |
8238 | case DW_FORM_ref2: | |
8239 | return "DW_FORM_ref2"; | |
8240 | case DW_FORM_ref4: | |
8241 | return "DW_FORM_ref4"; | |
8242 | case DW_FORM_ref8: | |
8243 | return "DW_FORM_ref8"; | |
8244 | case DW_FORM_ref_udata: | |
8245 | return "DW_FORM_ref_udata"; | |
8246 | case DW_FORM_indirect: | |
8247 | return "DW_FORM_indirect"; | |
8248 | default: | |
8249 | return "DW_FORM_<unknown>"; | |
8250 | } | |
8251 | } | |
8252 | ||
8253 | /* Convert a DWARF stack opcode into its string name. */ | |
8254 | ||
8255 | static char * | |
aa1ee363 | 8256 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
8257 | { |
8258 | switch (op) | |
8259 | { | |
8260 | case DW_OP_addr: | |
8261 | return "DW_OP_addr"; | |
8262 | case DW_OP_deref: | |
8263 | return "DW_OP_deref"; | |
8264 | case DW_OP_const1u: | |
8265 | return "DW_OP_const1u"; | |
8266 | case DW_OP_const1s: | |
8267 | return "DW_OP_const1s"; | |
8268 | case DW_OP_const2u: | |
8269 | return "DW_OP_const2u"; | |
8270 | case DW_OP_const2s: | |
8271 | return "DW_OP_const2s"; | |
8272 | case DW_OP_const4u: | |
8273 | return "DW_OP_const4u"; | |
8274 | case DW_OP_const4s: | |
8275 | return "DW_OP_const4s"; | |
8276 | case DW_OP_const8u: | |
8277 | return "DW_OP_const8u"; | |
8278 | case DW_OP_const8s: | |
8279 | return "DW_OP_const8s"; | |
8280 | case DW_OP_constu: | |
8281 | return "DW_OP_constu"; | |
8282 | case DW_OP_consts: | |
8283 | return "DW_OP_consts"; | |
8284 | case DW_OP_dup: | |
8285 | return "DW_OP_dup"; | |
8286 | case DW_OP_drop: | |
8287 | return "DW_OP_drop"; | |
8288 | case DW_OP_over: | |
8289 | return "DW_OP_over"; | |
8290 | case DW_OP_pick: | |
8291 | return "DW_OP_pick"; | |
8292 | case DW_OP_swap: | |
8293 | return "DW_OP_swap"; | |
8294 | case DW_OP_rot: | |
8295 | return "DW_OP_rot"; | |
8296 | case DW_OP_xderef: | |
8297 | return "DW_OP_xderef"; | |
8298 | case DW_OP_abs: | |
8299 | return "DW_OP_abs"; | |
8300 | case DW_OP_and: | |
8301 | return "DW_OP_and"; | |
8302 | case DW_OP_div: | |
8303 | return "DW_OP_div"; | |
8304 | case DW_OP_minus: | |
8305 | return "DW_OP_minus"; | |
8306 | case DW_OP_mod: | |
8307 | return "DW_OP_mod"; | |
8308 | case DW_OP_mul: | |
8309 | return "DW_OP_mul"; | |
8310 | case DW_OP_neg: | |
8311 | return "DW_OP_neg"; | |
8312 | case DW_OP_not: | |
8313 | return "DW_OP_not"; | |
8314 | case DW_OP_or: | |
8315 | return "DW_OP_or"; | |
8316 | case DW_OP_plus: | |
8317 | return "DW_OP_plus"; | |
8318 | case DW_OP_plus_uconst: | |
8319 | return "DW_OP_plus_uconst"; | |
8320 | case DW_OP_shl: | |
8321 | return "DW_OP_shl"; | |
8322 | case DW_OP_shr: | |
8323 | return "DW_OP_shr"; | |
8324 | case DW_OP_shra: | |
8325 | return "DW_OP_shra"; | |
8326 | case DW_OP_xor: | |
8327 | return "DW_OP_xor"; | |
8328 | case DW_OP_bra: | |
8329 | return "DW_OP_bra"; | |
8330 | case DW_OP_eq: | |
8331 | return "DW_OP_eq"; | |
8332 | case DW_OP_ge: | |
8333 | return "DW_OP_ge"; | |
8334 | case DW_OP_gt: | |
8335 | return "DW_OP_gt"; | |
8336 | case DW_OP_le: | |
8337 | return "DW_OP_le"; | |
8338 | case DW_OP_lt: | |
8339 | return "DW_OP_lt"; | |
8340 | case DW_OP_ne: | |
8341 | return "DW_OP_ne"; | |
8342 | case DW_OP_skip: | |
8343 | return "DW_OP_skip"; | |
8344 | case DW_OP_lit0: | |
8345 | return "DW_OP_lit0"; | |
8346 | case DW_OP_lit1: | |
8347 | return "DW_OP_lit1"; | |
8348 | case DW_OP_lit2: | |
8349 | return "DW_OP_lit2"; | |
8350 | case DW_OP_lit3: | |
8351 | return "DW_OP_lit3"; | |
8352 | case DW_OP_lit4: | |
8353 | return "DW_OP_lit4"; | |
8354 | case DW_OP_lit5: | |
8355 | return "DW_OP_lit5"; | |
8356 | case DW_OP_lit6: | |
8357 | return "DW_OP_lit6"; | |
8358 | case DW_OP_lit7: | |
8359 | return "DW_OP_lit7"; | |
8360 | case DW_OP_lit8: | |
8361 | return "DW_OP_lit8"; | |
8362 | case DW_OP_lit9: | |
8363 | return "DW_OP_lit9"; | |
8364 | case DW_OP_lit10: | |
8365 | return "DW_OP_lit10"; | |
8366 | case DW_OP_lit11: | |
8367 | return "DW_OP_lit11"; | |
8368 | case DW_OP_lit12: | |
8369 | return "DW_OP_lit12"; | |
8370 | case DW_OP_lit13: | |
8371 | return "DW_OP_lit13"; | |
8372 | case DW_OP_lit14: | |
8373 | return "DW_OP_lit14"; | |
8374 | case DW_OP_lit15: | |
8375 | return "DW_OP_lit15"; | |
8376 | case DW_OP_lit16: | |
8377 | return "DW_OP_lit16"; | |
8378 | case DW_OP_lit17: | |
8379 | return "DW_OP_lit17"; | |
8380 | case DW_OP_lit18: | |
8381 | return "DW_OP_lit18"; | |
8382 | case DW_OP_lit19: | |
8383 | return "DW_OP_lit19"; | |
8384 | case DW_OP_lit20: | |
8385 | return "DW_OP_lit20"; | |
8386 | case DW_OP_lit21: | |
8387 | return "DW_OP_lit21"; | |
8388 | case DW_OP_lit22: | |
8389 | return "DW_OP_lit22"; | |
8390 | case DW_OP_lit23: | |
8391 | return "DW_OP_lit23"; | |
8392 | case DW_OP_lit24: | |
8393 | return "DW_OP_lit24"; | |
8394 | case DW_OP_lit25: | |
8395 | return "DW_OP_lit25"; | |
8396 | case DW_OP_lit26: | |
8397 | return "DW_OP_lit26"; | |
8398 | case DW_OP_lit27: | |
8399 | return "DW_OP_lit27"; | |
8400 | case DW_OP_lit28: | |
8401 | return "DW_OP_lit28"; | |
8402 | case DW_OP_lit29: | |
8403 | return "DW_OP_lit29"; | |
8404 | case DW_OP_lit30: | |
8405 | return "DW_OP_lit30"; | |
8406 | case DW_OP_lit31: | |
8407 | return "DW_OP_lit31"; | |
8408 | case DW_OP_reg0: | |
8409 | return "DW_OP_reg0"; | |
8410 | case DW_OP_reg1: | |
8411 | return "DW_OP_reg1"; | |
8412 | case DW_OP_reg2: | |
8413 | return "DW_OP_reg2"; | |
8414 | case DW_OP_reg3: | |
8415 | return "DW_OP_reg3"; | |
8416 | case DW_OP_reg4: | |
8417 | return "DW_OP_reg4"; | |
8418 | case DW_OP_reg5: | |
8419 | return "DW_OP_reg5"; | |
8420 | case DW_OP_reg6: | |
8421 | return "DW_OP_reg6"; | |
8422 | case DW_OP_reg7: | |
8423 | return "DW_OP_reg7"; | |
8424 | case DW_OP_reg8: | |
8425 | return "DW_OP_reg8"; | |
8426 | case DW_OP_reg9: | |
8427 | return "DW_OP_reg9"; | |
8428 | case DW_OP_reg10: | |
8429 | return "DW_OP_reg10"; | |
8430 | case DW_OP_reg11: | |
8431 | return "DW_OP_reg11"; | |
8432 | case DW_OP_reg12: | |
8433 | return "DW_OP_reg12"; | |
8434 | case DW_OP_reg13: | |
8435 | return "DW_OP_reg13"; | |
8436 | case DW_OP_reg14: | |
8437 | return "DW_OP_reg14"; | |
8438 | case DW_OP_reg15: | |
8439 | return "DW_OP_reg15"; | |
8440 | case DW_OP_reg16: | |
8441 | return "DW_OP_reg16"; | |
8442 | case DW_OP_reg17: | |
8443 | return "DW_OP_reg17"; | |
8444 | case DW_OP_reg18: | |
8445 | return "DW_OP_reg18"; | |
8446 | case DW_OP_reg19: | |
8447 | return "DW_OP_reg19"; | |
8448 | case DW_OP_reg20: | |
8449 | return "DW_OP_reg20"; | |
8450 | case DW_OP_reg21: | |
8451 | return "DW_OP_reg21"; | |
8452 | case DW_OP_reg22: | |
8453 | return "DW_OP_reg22"; | |
8454 | case DW_OP_reg23: | |
8455 | return "DW_OP_reg23"; | |
8456 | case DW_OP_reg24: | |
8457 | return "DW_OP_reg24"; | |
8458 | case DW_OP_reg25: | |
8459 | return "DW_OP_reg25"; | |
8460 | case DW_OP_reg26: | |
8461 | return "DW_OP_reg26"; | |
8462 | case DW_OP_reg27: | |
8463 | return "DW_OP_reg27"; | |
8464 | case DW_OP_reg28: | |
8465 | return "DW_OP_reg28"; | |
8466 | case DW_OP_reg29: | |
8467 | return "DW_OP_reg29"; | |
8468 | case DW_OP_reg30: | |
8469 | return "DW_OP_reg30"; | |
8470 | case DW_OP_reg31: | |
8471 | return "DW_OP_reg31"; | |
8472 | case DW_OP_breg0: | |
8473 | return "DW_OP_breg0"; | |
8474 | case DW_OP_breg1: | |
8475 | return "DW_OP_breg1"; | |
8476 | case DW_OP_breg2: | |
8477 | return "DW_OP_breg2"; | |
8478 | case DW_OP_breg3: | |
8479 | return "DW_OP_breg3"; | |
8480 | case DW_OP_breg4: | |
8481 | return "DW_OP_breg4"; | |
8482 | case DW_OP_breg5: | |
8483 | return "DW_OP_breg5"; | |
8484 | case DW_OP_breg6: | |
8485 | return "DW_OP_breg6"; | |
8486 | case DW_OP_breg7: | |
8487 | return "DW_OP_breg7"; | |
8488 | case DW_OP_breg8: | |
8489 | return "DW_OP_breg8"; | |
8490 | case DW_OP_breg9: | |
8491 | return "DW_OP_breg9"; | |
8492 | case DW_OP_breg10: | |
8493 | return "DW_OP_breg10"; | |
8494 | case DW_OP_breg11: | |
8495 | return "DW_OP_breg11"; | |
8496 | case DW_OP_breg12: | |
8497 | return "DW_OP_breg12"; | |
8498 | case DW_OP_breg13: | |
8499 | return "DW_OP_breg13"; | |
8500 | case DW_OP_breg14: | |
8501 | return "DW_OP_breg14"; | |
8502 | case DW_OP_breg15: | |
8503 | return "DW_OP_breg15"; | |
8504 | case DW_OP_breg16: | |
8505 | return "DW_OP_breg16"; | |
8506 | case DW_OP_breg17: | |
8507 | return "DW_OP_breg17"; | |
8508 | case DW_OP_breg18: | |
8509 | return "DW_OP_breg18"; | |
8510 | case DW_OP_breg19: | |
8511 | return "DW_OP_breg19"; | |
8512 | case DW_OP_breg20: | |
8513 | return "DW_OP_breg20"; | |
8514 | case DW_OP_breg21: | |
8515 | return "DW_OP_breg21"; | |
8516 | case DW_OP_breg22: | |
8517 | return "DW_OP_breg22"; | |
8518 | case DW_OP_breg23: | |
8519 | return "DW_OP_breg23"; | |
8520 | case DW_OP_breg24: | |
8521 | return "DW_OP_breg24"; | |
8522 | case DW_OP_breg25: | |
8523 | return "DW_OP_breg25"; | |
8524 | case DW_OP_breg26: | |
8525 | return "DW_OP_breg26"; | |
8526 | case DW_OP_breg27: | |
8527 | return "DW_OP_breg27"; | |
8528 | case DW_OP_breg28: | |
8529 | return "DW_OP_breg28"; | |
8530 | case DW_OP_breg29: | |
8531 | return "DW_OP_breg29"; | |
8532 | case DW_OP_breg30: | |
8533 | return "DW_OP_breg30"; | |
8534 | case DW_OP_breg31: | |
8535 | return "DW_OP_breg31"; | |
8536 | case DW_OP_regx: | |
8537 | return "DW_OP_regx"; | |
8538 | case DW_OP_fbreg: | |
8539 | return "DW_OP_fbreg"; | |
8540 | case DW_OP_bregx: | |
8541 | return "DW_OP_bregx"; | |
8542 | case DW_OP_piece: | |
8543 | return "DW_OP_piece"; | |
8544 | case DW_OP_deref_size: | |
8545 | return "DW_OP_deref_size"; | |
8546 | case DW_OP_xderef_size: | |
8547 | return "DW_OP_xderef_size"; | |
8548 | case DW_OP_nop: | |
8549 | return "DW_OP_nop"; | |
b7619582 | 8550 | /* DWARF 3 extensions. */ |
ed348acc EZ |
8551 | case DW_OP_push_object_address: |
8552 | return "DW_OP_push_object_address"; | |
8553 | case DW_OP_call2: | |
8554 | return "DW_OP_call2"; | |
8555 | case DW_OP_call4: | |
8556 | return "DW_OP_call4"; | |
8557 | case DW_OP_call_ref: | |
8558 | return "DW_OP_call_ref"; | |
b7619582 GF |
8559 | /* GNU extensions. */ |
8560 | case DW_OP_form_tls_address: | |
8561 | return "DW_OP_form_tls_address"; | |
8562 | case DW_OP_call_frame_cfa: | |
8563 | return "DW_OP_call_frame_cfa"; | |
8564 | case DW_OP_bit_piece: | |
8565 | return "DW_OP_bit_piece"; | |
ed348acc EZ |
8566 | case DW_OP_GNU_push_tls_address: |
8567 | return "DW_OP_GNU_push_tls_address"; | |
b7619582 GF |
8568 | /* HP extensions. */ |
8569 | case DW_OP_HP_is_value: | |
8570 | return "DW_OP_HP_is_value"; | |
8571 | case DW_OP_HP_fltconst4: | |
8572 | return "DW_OP_HP_fltconst4"; | |
8573 | case DW_OP_HP_fltconst8: | |
8574 | return "DW_OP_HP_fltconst8"; | |
8575 | case DW_OP_HP_mod_range: | |
8576 | return "DW_OP_HP_mod_range"; | |
8577 | case DW_OP_HP_unmod_range: | |
8578 | return "DW_OP_HP_unmod_range"; | |
8579 | case DW_OP_HP_tls: | |
8580 | return "DW_OP_HP_tls"; | |
c906108c SS |
8581 | default: |
8582 | return "OP_<unknown>"; | |
8583 | } | |
8584 | } | |
8585 | ||
8586 | static char * | |
fba45db2 | 8587 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
8588 | { |
8589 | if (mybool) | |
8590 | return "TRUE"; | |
8591 | else | |
8592 | return "FALSE"; | |
8593 | } | |
8594 | ||
8595 | /* Convert a DWARF type code into its string name. */ | |
8596 | ||
8597 | static char * | |
aa1ee363 | 8598 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
8599 | { |
8600 | switch (enc) | |
8601 | { | |
b7619582 GF |
8602 | case DW_ATE_void: |
8603 | return "DW_ATE_void"; | |
c906108c SS |
8604 | case DW_ATE_address: |
8605 | return "DW_ATE_address"; | |
8606 | case DW_ATE_boolean: | |
8607 | return "DW_ATE_boolean"; | |
8608 | case DW_ATE_complex_float: | |
8609 | return "DW_ATE_complex_float"; | |
8610 | case DW_ATE_float: | |
8611 | return "DW_ATE_float"; | |
8612 | case DW_ATE_signed: | |
8613 | return "DW_ATE_signed"; | |
8614 | case DW_ATE_signed_char: | |
8615 | return "DW_ATE_signed_char"; | |
8616 | case DW_ATE_unsigned: | |
8617 | return "DW_ATE_unsigned"; | |
8618 | case DW_ATE_unsigned_char: | |
8619 | return "DW_ATE_unsigned_char"; | |
b7619582 | 8620 | /* DWARF 3. */ |
d9fa45fe DC |
8621 | case DW_ATE_imaginary_float: |
8622 | return "DW_ATE_imaginary_float"; | |
b7619582 GF |
8623 | case DW_ATE_packed_decimal: |
8624 | return "DW_ATE_packed_decimal"; | |
8625 | case DW_ATE_numeric_string: | |
8626 | return "DW_ATE_numeric_string"; | |
8627 | case DW_ATE_edited: | |
8628 | return "DW_ATE_edited"; | |
8629 | case DW_ATE_signed_fixed: | |
8630 | return "DW_ATE_signed_fixed"; | |
8631 | case DW_ATE_unsigned_fixed: | |
8632 | return "DW_ATE_unsigned_fixed"; | |
8633 | case DW_ATE_decimal_float: | |
8634 | return "DW_ATE_decimal_float"; | |
8635 | /* HP extensions. */ | |
8636 | case DW_ATE_HP_float80: | |
8637 | return "DW_ATE_HP_float80"; | |
8638 | case DW_ATE_HP_complex_float80: | |
8639 | return "DW_ATE_HP_complex_float80"; | |
8640 | case DW_ATE_HP_float128: | |
8641 | return "DW_ATE_HP_float128"; | |
8642 | case DW_ATE_HP_complex_float128: | |
8643 | return "DW_ATE_HP_complex_float128"; | |
8644 | case DW_ATE_HP_floathpintel: | |
8645 | return "DW_ATE_HP_floathpintel"; | |
8646 | case DW_ATE_HP_imaginary_float80: | |
8647 | return "DW_ATE_HP_imaginary_float80"; | |
8648 | case DW_ATE_HP_imaginary_float128: | |
8649 | return "DW_ATE_HP_imaginary_float128"; | |
c906108c SS |
8650 | default: |
8651 | return "DW_ATE_<unknown>"; | |
8652 | } | |
8653 | } | |
8654 | ||
8655 | /* Convert a DWARF call frame info operation to its string name. */ | |
8656 | ||
8657 | #if 0 | |
8658 | static char * | |
aa1ee363 | 8659 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
8660 | { |
8661 | switch (cfi_opc) | |
8662 | { | |
8663 | case DW_CFA_advance_loc: | |
8664 | return "DW_CFA_advance_loc"; | |
8665 | case DW_CFA_offset: | |
8666 | return "DW_CFA_offset"; | |
8667 | case DW_CFA_restore: | |
8668 | return "DW_CFA_restore"; | |
8669 | case DW_CFA_nop: | |
8670 | return "DW_CFA_nop"; | |
8671 | case DW_CFA_set_loc: | |
8672 | return "DW_CFA_set_loc"; | |
8673 | case DW_CFA_advance_loc1: | |
8674 | return "DW_CFA_advance_loc1"; | |
8675 | case DW_CFA_advance_loc2: | |
8676 | return "DW_CFA_advance_loc2"; | |
8677 | case DW_CFA_advance_loc4: | |
8678 | return "DW_CFA_advance_loc4"; | |
8679 | case DW_CFA_offset_extended: | |
8680 | return "DW_CFA_offset_extended"; | |
8681 | case DW_CFA_restore_extended: | |
8682 | return "DW_CFA_restore_extended"; | |
8683 | case DW_CFA_undefined: | |
8684 | return "DW_CFA_undefined"; | |
8685 | case DW_CFA_same_value: | |
8686 | return "DW_CFA_same_value"; | |
8687 | case DW_CFA_register: | |
8688 | return "DW_CFA_register"; | |
8689 | case DW_CFA_remember_state: | |
8690 | return "DW_CFA_remember_state"; | |
8691 | case DW_CFA_restore_state: | |
8692 | return "DW_CFA_restore_state"; | |
8693 | case DW_CFA_def_cfa: | |
8694 | return "DW_CFA_def_cfa"; | |
8695 | case DW_CFA_def_cfa_register: | |
8696 | return "DW_CFA_def_cfa_register"; | |
8697 | case DW_CFA_def_cfa_offset: | |
8698 | return "DW_CFA_def_cfa_offset"; | |
b7619582 | 8699 | /* DWARF 3. */ |
985cb1a3 JM |
8700 | case DW_CFA_def_cfa_expression: |
8701 | return "DW_CFA_def_cfa_expression"; | |
8702 | case DW_CFA_expression: | |
8703 | return "DW_CFA_expression"; | |
8704 | case DW_CFA_offset_extended_sf: | |
8705 | return "DW_CFA_offset_extended_sf"; | |
8706 | case DW_CFA_def_cfa_sf: | |
8707 | return "DW_CFA_def_cfa_sf"; | |
8708 | case DW_CFA_def_cfa_offset_sf: | |
8709 | return "DW_CFA_def_cfa_offset_sf"; | |
b7619582 GF |
8710 | case DW_CFA_val_offset: |
8711 | return "DW_CFA_val_offset"; | |
8712 | case DW_CFA_val_offset_sf: | |
8713 | return "DW_CFA_val_offset_sf"; | |
8714 | case DW_CFA_val_expression: | |
8715 | return "DW_CFA_val_expression"; | |
8716 | /* SGI/MIPS specific. */ | |
c906108c SS |
8717 | case DW_CFA_MIPS_advance_loc8: |
8718 | return "DW_CFA_MIPS_advance_loc8"; | |
b7619582 | 8719 | /* GNU extensions. */ |
985cb1a3 JM |
8720 | case DW_CFA_GNU_window_save: |
8721 | return "DW_CFA_GNU_window_save"; | |
8722 | case DW_CFA_GNU_args_size: | |
8723 | return "DW_CFA_GNU_args_size"; | |
8724 | case DW_CFA_GNU_negative_offset_extended: | |
8725 | return "DW_CFA_GNU_negative_offset_extended"; | |
c906108c SS |
8726 | default: |
8727 | return "DW_CFA_<unknown>"; | |
8728 | } | |
8729 | } | |
8730 | #endif | |
8731 | ||
f9aca02d | 8732 | static void |
fba45db2 | 8733 | dump_die (struct die_info *die) |
c906108c SS |
8734 | { |
8735 | unsigned int i; | |
8736 | ||
48cd0caa | 8737 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 8738 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 8739 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 8740 | dwarf_bool_name (die->child != NULL)); |
c906108c | 8741 | |
48cd0caa | 8742 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
8743 | for (i = 0; i < die->num_attrs; ++i) |
8744 | { | |
48cd0caa | 8745 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
8746 | dwarf_attr_name (die->attrs[i].name), |
8747 | dwarf_form_name (die->attrs[i].form)); | |
8748 | switch (die->attrs[i].form) | |
8749 | { | |
8750 | case DW_FORM_ref_addr: | |
8751 | case DW_FORM_addr: | |
48cd0caa | 8752 | fprintf_unfiltered (gdb_stderr, "address: "); |
66bf4b3a | 8753 | deprecated_print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr); |
c906108c SS |
8754 | break; |
8755 | case DW_FORM_block2: | |
8756 | case DW_FORM_block4: | |
8757 | case DW_FORM_block: | |
8758 | case DW_FORM_block1: | |
48cd0caa | 8759 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c | 8760 | break; |
10b3939b DJ |
8761 | case DW_FORM_ref1: |
8762 | case DW_FORM_ref2: | |
8763 | case DW_FORM_ref4: | |
8764 | fprintf_unfiltered (gdb_stderr, "constant ref: %ld (adjusted)", | |
8765 | (long) (DW_ADDR (&die->attrs[i]))); | |
8766 | break; | |
c906108c SS |
8767 | case DW_FORM_data1: |
8768 | case DW_FORM_data2: | |
8769 | case DW_FORM_data4: | |
ce5d95e1 | 8770 | case DW_FORM_data8: |
c906108c SS |
8771 | case DW_FORM_udata: |
8772 | case DW_FORM_sdata: | |
48cd0caa | 8773 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
8774 | break; |
8775 | case DW_FORM_string: | |
4bdf3d34 | 8776 | case DW_FORM_strp: |
48cd0caa | 8777 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 8778 | DW_STRING (&die->attrs[i]) |
c5aa993b | 8779 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
8780 | break; |
8781 | case DW_FORM_flag: | |
8782 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 8783 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 8784 | else |
48cd0caa | 8785 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 8786 | break; |
a8329558 KW |
8787 | case DW_FORM_indirect: |
8788 | /* the reader will have reduced the indirect form to | |
8789 | the "base form" so this form should not occur */ | |
48cd0caa | 8790 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 8791 | break; |
c906108c | 8792 | default: |
48cd0caa | 8793 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 8794 | die->attrs[i].form); |
c906108c | 8795 | } |
48cd0caa | 8796 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
8797 | } |
8798 | } | |
8799 | ||
f9aca02d | 8800 | static void |
fba45db2 | 8801 | dump_die_list (struct die_info *die) |
c906108c SS |
8802 | { |
8803 | while (die) | |
8804 | { | |
8805 | dump_die (die); | |
639d11d3 DC |
8806 | if (die->child != NULL) |
8807 | dump_die_list (die->child); | |
8808 | if (die->sibling != NULL) | |
8809 | dump_die_list (die->sibling); | |
c906108c SS |
8810 | } |
8811 | } | |
8812 | ||
f9aca02d | 8813 | static void |
10b3939b DJ |
8814 | store_in_ref_table (unsigned int offset, struct die_info *die, |
8815 | struct dwarf2_cu *cu) | |
c906108c SS |
8816 | { |
8817 | int h; | |
8818 | struct die_info *old; | |
8819 | ||
8820 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8821 | old = cu->die_ref_table[h]; |
c906108c | 8822 | die->next_ref = old; |
10b3939b | 8823 | cu->die_ref_table[h] = die; |
c906108c SS |
8824 | } |
8825 | ||
8826 | static unsigned int | |
e142c38c | 8827 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
8828 | { |
8829 | unsigned int result = 0; | |
8830 | ||
8831 | switch (attr->form) | |
8832 | { | |
8833 | case DW_FORM_ref_addr: | |
c906108c SS |
8834 | case DW_FORM_ref1: |
8835 | case DW_FORM_ref2: | |
8836 | case DW_FORM_ref4: | |
613e1657 | 8837 | case DW_FORM_ref8: |
c906108c | 8838 | case DW_FORM_ref_udata: |
10b3939b | 8839 | result = DW_ADDR (attr); |
c906108c SS |
8840 | break; |
8841 | default: | |
4d3c2250 | 8842 | complaint (&symfile_complaints, |
e2e0b3e5 | 8843 | _("unsupported die ref attribute form: '%s'"), |
4d3c2250 | 8844 | dwarf_form_name (attr->form)); |
c906108c SS |
8845 | } |
8846 | return result; | |
8847 | } | |
8848 | ||
a02abb62 JB |
8849 | /* Return the constant value held by the given attribute. Return -1 |
8850 | if the value held by the attribute is not constant. */ | |
8851 | ||
8852 | static int | |
8853 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
8854 | { | |
8855 | if (attr->form == DW_FORM_sdata) | |
8856 | return DW_SND (attr); | |
8857 | else if (attr->form == DW_FORM_udata | |
8858 | || attr->form == DW_FORM_data1 | |
8859 | || attr->form == DW_FORM_data2 | |
8860 | || attr->form == DW_FORM_data4 | |
8861 | || attr->form == DW_FORM_data8) | |
8862 | return DW_UNSND (attr); | |
8863 | else | |
8864 | { | |
e2e0b3e5 | 8865 | complaint (&symfile_complaints, _("Attribute value is not a constant (%s)"), |
a02abb62 JB |
8866 | dwarf_form_name (attr->form)); |
8867 | return default_value; | |
8868 | } | |
8869 | } | |
8870 | ||
f9aca02d | 8871 | static struct die_info * |
10b3939b DJ |
8872 | follow_die_ref (struct die_info *src_die, struct attribute *attr, |
8873 | struct dwarf2_cu *cu) | |
c906108c SS |
8874 | { |
8875 | struct die_info *die; | |
10b3939b | 8876 | unsigned int offset; |
c906108c | 8877 | int h; |
10b3939b DJ |
8878 | struct die_info temp_die; |
8879 | struct dwarf2_cu *target_cu; | |
8880 | ||
8881 | offset = dwarf2_get_ref_die_offset (attr, cu); | |
8882 | ||
8883 | if (DW_ADDR (attr) < cu->header.offset | |
8884 | || DW_ADDR (attr) >= cu->header.offset + cu->header.length) | |
8885 | { | |
8886 | struct dwarf2_per_cu_data *per_cu; | |
8887 | per_cu = dwarf2_find_containing_comp_unit (DW_ADDR (attr), | |
8888 | cu->objfile); | |
8889 | target_cu = per_cu->cu; | |
8890 | } | |
8891 | else | |
8892 | target_cu = cu; | |
c906108c SS |
8893 | |
8894 | h = (offset % REF_HASH_SIZE); | |
10b3939b | 8895 | die = target_cu->die_ref_table[h]; |
c906108c SS |
8896 | while (die) |
8897 | { | |
8898 | if (die->offset == offset) | |
10b3939b | 8899 | return die; |
c906108c SS |
8900 | die = die->next_ref; |
8901 | } | |
10b3939b | 8902 | |
8a3fe4f8 AC |
8903 | error (_("Dwarf Error: Cannot find DIE at 0x%lx referenced from DIE " |
8904 | "at 0x%lx [in module %s]"), | |
10b3939b DJ |
8905 | (long) src_die->offset, (long) offset, cu->objfile->name); |
8906 | ||
c906108c SS |
8907 | return NULL; |
8908 | } | |
8909 | ||
8910 | static struct type * | |
e142c38c DJ |
8911 | dwarf2_fundamental_type (struct objfile *objfile, int typeid, |
8912 | struct dwarf2_cu *cu) | |
c906108c SS |
8913 | { |
8914 | if (typeid < 0 || typeid >= FT_NUM_MEMBERS) | |
8915 | { | |
8a3fe4f8 | 8916 | error (_("Dwarf Error: internal error - invalid fundamental type id %d [in module %s]"), |
659b0389 | 8917 | typeid, objfile->name); |
c906108c SS |
8918 | } |
8919 | ||
8920 | /* Look for this particular type in the fundamental type vector. If | |
8921 | one is not found, create and install one appropriate for the | |
8922 | current language and the current target machine. */ | |
8923 | ||
e142c38c | 8924 | if (cu->ftypes[typeid] == NULL) |
c906108c | 8925 | { |
e142c38c | 8926 | cu->ftypes[typeid] = cu->language_defn->la_fund_type (objfile, typeid); |
c906108c SS |
8927 | } |
8928 | ||
e142c38c | 8929 | return (cu->ftypes[typeid]); |
c906108c SS |
8930 | } |
8931 | ||
8932 | /* Decode simple location descriptions. | |
8933 | Given a pointer to a dwarf block that defines a location, compute | |
8934 | the location and return the value. | |
8935 | ||
4cecd739 DJ |
8936 | NOTE drow/2003-11-18: This function is called in two situations |
8937 | now: for the address of static or global variables (partial symbols | |
8938 | only) and for offsets into structures which are expected to be | |
8939 | (more or less) constant. The partial symbol case should go away, | |
8940 | and only the constant case should remain. That will let this | |
8941 | function complain more accurately. A few special modes are allowed | |
8942 | without complaint for global variables (for instance, global | |
8943 | register values and thread-local values). | |
c906108c SS |
8944 | |
8945 | A location description containing no operations indicates that the | |
4cecd739 | 8946 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
8947 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
8948 | callers will only want a very basic result and this can become a | |
8949 | complaint. | |
c906108c | 8950 | |
c906108c SS |
8951 | Note that stack[0] is unused except as a default error return. |
8952 | Note that stack overflow is not yet handled. */ | |
8953 | ||
8954 | static CORE_ADDR | |
e7c27a73 | 8955 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 8956 | { |
e7c27a73 DJ |
8957 | struct objfile *objfile = cu->objfile; |
8958 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
8959 | int i; |
8960 | int size = blk->size; | |
fe1b8b76 | 8961 | gdb_byte *data = blk->data; |
c906108c SS |
8962 | CORE_ADDR stack[64]; |
8963 | int stacki; | |
8964 | unsigned int bytes_read, unsnd; | |
fe1b8b76 | 8965 | gdb_byte op; |
c906108c SS |
8966 | |
8967 | i = 0; | |
8968 | stacki = 0; | |
8969 | stack[stacki] = 0; | |
c906108c SS |
8970 | |
8971 | while (i < size) | |
8972 | { | |
c906108c SS |
8973 | op = data[i++]; |
8974 | switch (op) | |
8975 | { | |
f1bea926 JM |
8976 | case DW_OP_lit0: |
8977 | case DW_OP_lit1: | |
8978 | case DW_OP_lit2: | |
8979 | case DW_OP_lit3: | |
8980 | case DW_OP_lit4: | |
8981 | case DW_OP_lit5: | |
8982 | case DW_OP_lit6: | |
8983 | case DW_OP_lit7: | |
8984 | case DW_OP_lit8: | |
8985 | case DW_OP_lit9: | |
8986 | case DW_OP_lit10: | |
8987 | case DW_OP_lit11: | |
8988 | case DW_OP_lit12: | |
8989 | case DW_OP_lit13: | |
8990 | case DW_OP_lit14: | |
8991 | case DW_OP_lit15: | |
8992 | case DW_OP_lit16: | |
8993 | case DW_OP_lit17: | |
8994 | case DW_OP_lit18: | |
8995 | case DW_OP_lit19: | |
8996 | case DW_OP_lit20: | |
8997 | case DW_OP_lit21: | |
8998 | case DW_OP_lit22: | |
8999 | case DW_OP_lit23: | |
9000 | case DW_OP_lit24: | |
9001 | case DW_OP_lit25: | |
9002 | case DW_OP_lit26: | |
9003 | case DW_OP_lit27: | |
9004 | case DW_OP_lit28: | |
9005 | case DW_OP_lit29: | |
9006 | case DW_OP_lit30: | |
9007 | case DW_OP_lit31: | |
9008 | stack[++stacki] = op - DW_OP_lit0; | |
9009 | break; | |
9010 | ||
c906108c SS |
9011 | case DW_OP_reg0: |
9012 | case DW_OP_reg1: | |
9013 | case DW_OP_reg2: | |
9014 | case DW_OP_reg3: | |
9015 | case DW_OP_reg4: | |
9016 | case DW_OP_reg5: | |
9017 | case DW_OP_reg6: | |
9018 | case DW_OP_reg7: | |
9019 | case DW_OP_reg8: | |
9020 | case DW_OP_reg9: | |
9021 | case DW_OP_reg10: | |
9022 | case DW_OP_reg11: | |
9023 | case DW_OP_reg12: | |
9024 | case DW_OP_reg13: | |
9025 | case DW_OP_reg14: | |
9026 | case DW_OP_reg15: | |
9027 | case DW_OP_reg16: | |
9028 | case DW_OP_reg17: | |
9029 | case DW_OP_reg18: | |
9030 | case DW_OP_reg19: | |
9031 | case DW_OP_reg20: | |
9032 | case DW_OP_reg21: | |
9033 | case DW_OP_reg22: | |
9034 | case DW_OP_reg23: | |
9035 | case DW_OP_reg24: | |
9036 | case DW_OP_reg25: | |
9037 | case DW_OP_reg26: | |
9038 | case DW_OP_reg27: | |
9039 | case DW_OP_reg28: | |
9040 | case DW_OP_reg29: | |
9041 | case DW_OP_reg30: | |
9042 | case DW_OP_reg31: | |
c906108c | 9043 | stack[++stacki] = op - DW_OP_reg0; |
4cecd739 DJ |
9044 | if (i < size) |
9045 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9046 | break; |
9047 | ||
9048 | case DW_OP_regx: | |
c906108c SS |
9049 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); |
9050 | i += bytes_read; | |
c906108c | 9051 | stack[++stacki] = unsnd; |
4cecd739 DJ |
9052 | if (i < size) |
9053 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
9054 | break; |
9055 | ||
9056 | case DW_OP_addr: | |
107d2387 | 9057 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 9058 | cu, &bytes_read); |
107d2387 | 9059 | i += bytes_read; |
c906108c SS |
9060 | break; |
9061 | ||
9062 | case DW_OP_const1u: | |
9063 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
9064 | i += 1; | |
9065 | break; | |
9066 | ||
9067 | case DW_OP_const1s: | |
9068 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
9069 | i += 1; | |
9070 | break; | |
9071 | ||
9072 | case DW_OP_const2u: | |
9073 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
9074 | i += 2; | |
9075 | break; | |
9076 | ||
9077 | case DW_OP_const2s: | |
9078 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
9079 | i += 2; | |
9080 | break; | |
9081 | ||
9082 | case DW_OP_const4u: | |
9083 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
9084 | i += 4; | |
9085 | break; | |
9086 | ||
9087 | case DW_OP_const4s: | |
9088 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
9089 | i += 4; | |
9090 | break; | |
9091 | ||
9092 | case DW_OP_constu: | |
9093 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 9094 | &bytes_read); |
c906108c SS |
9095 | i += bytes_read; |
9096 | break; | |
9097 | ||
9098 | case DW_OP_consts: | |
9099 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
9100 | i += bytes_read; | |
9101 | break; | |
9102 | ||
f1bea926 JM |
9103 | case DW_OP_dup: |
9104 | stack[stacki + 1] = stack[stacki]; | |
9105 | stacki++; | |
9106 | break; | |
9107 | ||
c906108c SS |
9108 | case DW_OP_plus: |
9109 | stack[stacki - 1] += stack[stacki]; | |
9110 | stacki--; | |
9111 | break; | |
9112 | ||
9113 | case DW_OP_plus_uconst: | |
9114 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
9115 | i += bytes_read; | |
9116 | break; | |
9117 | ||
9118 | case DW_OP_minus: | |
f1bea926 | 9119 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
9120 | stacki--; |
9121 | break; | |
9122 | ||
7a292a7a | 9123 | case DW_OP_deref: |
7a292a7a | 9124 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
9125 | this using GDB's address_class enum. This is valid for partial |
9126 | global symbols, although the variable's address will be bogus | |
9127 | in the psymtab. */ | |
7a292a7a | 9128 | if (i < size) |
4d3c2250 | 9129 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
9130 | break; |
9131 | ||
9d774e44 | 9132 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
9133 | /* The top of the stack has the offset from the beginning |
9134 | of the thread control block at which the variable is located. */ | |
9135 | /* Nothing should follow this operator, so the top of stack would | |
9136 | be returned. */ | |
4cecd739 DJ |
9137 | /* This is valid for partial global symbols, but the variable's |
9138 | address will be bogus in the psymtab. */ | |
9d774e44 | 9139 | if (i < size) |
4d3c2250 | 9140 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
9141 | break; |
9142 | ||
c906108c | 9143 | default: |
e2e0b3e5 | 9144 | complaint (&symfile_complaints, _("unsupported stack op: '%s'"), |
4d3c2250 | 9145 | dwarf_stack_op_name (op)); |
c906108c SS |
9146 | return (stack[stacki]); |
9147 | } | |
9148 | } | |
9149 | return (stack[stacki]); | |
9150 | } | |
9151 | ||
9152 | /* memory allocation interface */ | |
9153 | ||
c906108c | 9154 | static struct dwarf_block * |
7b5a2f43 | 9155 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c SS |
9156 | { |
9157 | struct dwarf_block *blk; | |
9158 | ||
9159 | blk = (struct dwarf_block *) | |
7b5a2f43 | 9160 | obstack_alloc (&cu->comp_unit_obstack, sizeof (struct dwarf_block)); |
c906108c SS |
9161 | return (blk); |
9162 | } | |
9163 | ||
9164 | static struct abbrev_info * | |
f3dd6933 | 9165 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
9166 | { |
9167 | struct abbrev_info *abbrev; | |
9168 | ||
f3dd6933 DJ |
9169 | abbrev = (struct abbrev_info *) |
9170 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
9171 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
9172 | return (abbrev); | |
9173 | } | |
9174 | ||
9175 | static struct die_info * | |
fba45db2 | 9176 | dwarf_alloc_die (void) |
c906108c SS |
9177 | { |
9178 | struct die_info *die; | |
9179 | ||
9180 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
9181 | memset (die, 0, sizeof (struct die_info)); | |
9182 | return (die); | |
9183 | } | |
2e276125 JB |
9184 | |
9185 | \f | |
9186 | /* Macro support. */ | |
9187 | ||
9188 | ||
9189 | /* Return the full name of file number I in *LH's file name table. | |
9190 | Use COMP_DIR as the name of the current directory of the | |
9191 | compilation. The result is allocated using xmalloc; the caller is | |
9192 | responsible for freeing it. */ | |
9193 | static char * | |
9194 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
9195 | { | |
6a83a1e6 EZ |
9196 | /* Is the file number a valid index into the line header's file name |
9197 | table? Remember that file numbers start with one, not zero. */ | |
9198 | if (1 <= file && file <= lh->num_file_names) | |
9199 | { | |
9200 | struct file_entry *fe = &lh->file_names[file - 1]; | |
2e276125 | 9201 | |
6a83a1e6 EZ |
9202 | if (IS_ABSOLUTE_PATH (fe->name)) |
9203 | return xstrdup (fe->name); | |
9204 | else | |
9205 | { | |
9206 | const char *dir; | |
9207 | int dir_len; | |
9208 | char *full_name; | |
9209 | ||
9210 | if (fe->dir_index) | |
9211 | dir = lh->include_dirs[fe->dir_index - 1]; | |
9212 | else | |
9213 | dir = comp_dir; | |
9214 | ||
9215 | if (dir) | |
9216 | { | |
9217 | dir_len = strlen (dir); | |
9218 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
9219 | strcpy (full_name, dir); | |
9220 | full_name[dir_len] = '/'; | |
9221 | strcpy (full_name + dir_len + 1, fe->name); | |
9222 | return full_name; | |
9223 | } | |
9224 | else | |
9225 | return xstrdup (fe->name); | |
9226 | } | |
9227 | } | |
2e276125 JB |
9228 | else |
9229 | { | |
6a83a1e6 EZ |
9230 | /* The compiler produced a bogus file number. We can at least |
9231 | record the macro definitions made in the file, even if we | |
9232 | won't be able to find the file by name. */ | |
9233 | char fake_name[80]; | |
9234 | sprintf (fake_name, "<bad macro file number %d>", file); | |
2e276125 | 9235 | |
6a83a1e6 EZ |
9236 | complaint (&symfile_complaints, |
9237 | _("bad file number in macro information (%d)"), | |
9238 | file); | |
2e276125 | 9239 | |
6a83a1e6 | 9240 | return xstrdup (fake_name); |
2e276125 JB |
9241 | } |
9242 | } | |
9243 | ||
9244 | ||
9245 | static struct macro_source_file * | |
9246 | macro_start_file (int file, int line, | |
9247 | struct macro_source_file *current_file, | |
9248 | const char *comp_dir, | |
9249 | struct line_header *lh, struct objfile *objfile) | |
9250 | { | |
9251 | /* The full name of this source file. */ | |
9252 | char *full_name = file_full_name (file, lh, comp_dir); | |
9253 | ||
9254 | /* We don't create a macro table for this compilation unit | |
9255 | at all until we actually get a filename. */ | |
9256 | if (! pending_macros) | |
4a146b47 | 9257 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 9258 | objfile->macro_cache); |
2e276125 JB |
9259 | |
9260 | if (! current_file) | |
9261 | /* If we have no current file, then this must be the start_file | |
9262 | directive for the compilation unit's main source file. */ | |
9263 | current_file = macro_set_main (pending_macros, full_name); | |
9264 | else | |
9265 | current_file = macro_include (current_file, line, full_name); | |
9266 | ||
9267 | xfree (full_name); | |
9268 | ||
9269 | return current_file; | |
9270 | } | |
9271 | ||
9272 | ||
9273 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
9274 | followed by a null byte. */ | |
9275 | static char * | |
9276 | copy_string (const char *buf, int len) | |
9277 | { | |
9278 | char *s = xmalloc (len + 1); | |
9279 | memcpy (s, buf, len); | |
9280 | s[len] = '\0'; | |
9281 | ||
9282 | return s; | |
9283 | } | |
9284 | ||
9285 | ||
9286 | static const char * | |
9287 | consume_improper_spaces (const char *p, const char *body) | |
9288 | { | |
9289 | if (*p == ' ') | |
9290 | { | |
4d3c2250 | 9291 | complaint (&symfile_complaints, |
e2e0b3e5 | 9292 | _("macro definition contains spaces in formal argument list:\n`%s'"), |
4d3c2250 | 9293 | body); |
2e276125 JB |
9294 | |
9295 | while (*p == ' ') | |
9296 | p++; | |
9297 | } | |
9298 | ||
9299 | return p; | |
9300 | } | |
9301 | ||
9302 | ||
9303 | static void | |
9304 | parse_macro_definition (struct macro_source_file *file, int line, | |
9305 | const char *body) | |
9306 | { | |
9307 | const char *p; | |
9308 | ||
9309 | /* The body string takes one of two forms. For object-like macro | |
9310 | definitions, it should be: | |
9311 | ||
9312 | <macro name> " " <definition> | |
9313 | ||
9314 | For function-like macro definitions, it should be: | |
9315 | ||
9316 | <macro name> "() " <definition> | |
9317 | or | |
9318 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
9319 | ||
9320 | Spaces may appear only where explicitly indicated, and in the | |
9321 | <definition>. | |
9322 | ||
9323 | The Dwarf 2 spec says that an object-like macro's name is always | |
9324 | followed by a space, but versions of GCC around March 2002 omit | |
9325 | the space when the macro's definition is the empty string. | |
9326 | ||
9327 | The Dwarf 2 spec says that there should be no spaces between the | |
9328 | formal arguments in a function-like macro's formal argument list, | |
9329 | but versions of GCC around March 2002 include spaces after the | |
9330 | commas. */ | |
9331 | ||
9332 | ||
9333 | /* Find the extent of the macro name. The macro name is terminated | |
9334 | by either a space or null character (for an object-like macro) or | |
9335 | an opening paren (for a function-like macro). */ | |
9336 | for (p = body; *p; p++) | |
9337 | if (*p == ' ' || *p == '(') | |
9338 | break; | |
9339 | ||
9340 | if (*p == ' ' || *p == '\0') | |
9341 | { | |
9342 | /* It's an object-like macro. */ | |
9343 | int name_len = p - body; | |
9344 | char *name = copy_string (body, name_len); | |
9345 | const char *replacement; | |
9346 | ||
9347 | if (*p == ' ') | |
9348 | replacement = body + name_len + 1; | |
9349 | else | |
9350 | { | |
4d3c2250 | 9351 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9352 | replacement = body + name_len; |
9353 | } | |
9354 | ||
9355 | macro_define_object (file, line, name, replacement); | |
9356 | ||
9357 | xfree (name); | |
9358 | } | |
9359 | else if (*p == '(') | |
9360 | { | |
9361 | /* It's a function-like macro. */ | |
9362 | char *name = copy_string (body, p - body); | |
9363 | int argc = 0; | |
9364 | int argv_size = 1; | |
9365 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
9366 | ||
9367 | p++; | |
9368 | ||
9369 | p = consume_improper_spaces (p, body); | |
9370 | ||
9371 | /* Parse the formal argument list. */ | |
9372 | while (*p && *p != ')') | |
9373 | { | |
9374 | /* Find the extent of the current argument name. */ | |
9375 | const char *arg_start = p; | |
9376 | ||
9377 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
9378 | p++; | |
9379 | ||
9380 | if (! *p || p == arg_start) | |
4d3c2250 | 9381 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9382 | else |
9383 | { | |
9384 | /* Make sure argv has room for the new argument. */ | |
9385 | if (argc >= argv_size) | |
9386 | { | |
9387 | argv_size *= 2; | |
9388 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
9389 | } | |
9390 | ||
9391 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
9392 | } | |
9393 | ||
9394 | p = consume_improper_spaces (p, body); | |
9395 | ||
9396 | /* Consume the comma, if present. */ | |
9397 | if (*p == ',') | |
9398 | { | |
9399 | p++; | |
9400 | ||
9401 | p = consume_improper_spaces (p, body); | |
9402 | } | |
9403 | } | |
9404 | ||
9405 | if (*p == ')') | |
9406 | { | |
9407 | p++; | |
9408 | ||
9409 | if (*p == ' ') | |
9410 | /* Perfectly formed definition, no complaints. */ | |
9411 | macro_define_function (file, line, name, | |
9412 | argc, (const char **) argv, | |
9413 | p + 1); | |
9414 | else if (*p == '\0') | |
9415 | { | |
9416 | /* Complain, but do define it. */ | |
4d3c2250 | 9417 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9418 | macro_define_function (file, line, name, |
9419 | argc, (const char **) argv, | |
9420 | p); | |
9421 | } | |
9422 | else | |
9423 | /* Just complain. */ | |
4d3c2250 | 9424 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9425 | } |
9426 | else | |
9427 | /* Just complain. */ | |
4d3c2250 | 9428 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9429 | |
9430 | xfree (name); | |
9431 | { | |
9432 | int i; | |
9433 | ||
9434 | for (i = 0; i < argc; i++) | |
9435 | xfree (argv[i]); | |
9436 | } | |
9437 | xfree (argv); | |
9438 | } | |
9439 | else | |
4d3c2250 | 9440 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
9441 | } |
9442 | ||
9443 | ||
9444 | static void | |
9445 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
9446 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 9447 | struct dwarf2_cu *cu) |
2e276125 | 9448 | { |
fe1b8b76 | 9449 | gdb_byte *mac_ptr, *mac_end; |
2e276125 JB |
9450 | struct macro_source_file *current_file = 0; |
9451 | ||
6502dd73 | 9452 | if (dwarf2_per_objfile->macinfo_buffer == NULL) |
2e276125 | 9453 | { |
e2e0b3e5 | 9454 | complaint (&symfile_complaints, _("missing .debug_macinfo section")); |
2e276125 JB |
9455 | return; |
9456 | } | |
9457 | ||
6502dd73 DJ |
9458 | mac_ptr = dwarf2_per_objfile->macinfo_buffer + offset; |
9459 | mac_end = dwarf2_per_objfile->macinfo_buffer | |
9460 | + dwarf2_per_objfile->macinfo_size; | |
2e276125 JB |
9461 | |
9462 | for (;;) | |
9463 | { | |
9464 | enum dwarf_macinfo_record_type macinfo_type; | |
9465 | ||
9466 | /* Do we at least have room for a macinfo type byte? */ | |
9467 | if (mac_ptr >= mac_end) | |
9468 | { | |
4d3c2250 | 9469 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9470 | return; |
9471 | } | |
9472 | ||
9473 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
9474 | mac_ptr++; | |
9475 | ||
9476 | switch (macinfo_type) | |
9477 | { | |
9478 | /* A zero macinfo type indicates the end of the macro | |
9479 | information. */ | |
9480 | case 0: | |
9481 | return; | |
9482 | ||
9483 | case DW_MACINFO_define: | |
9484 | case DW_MACINFO_undef: | |
9485 | { | |
891d2f0b | 9486 | unsigned int bytes_read; |
2e276125 JB |
9487 | int line; |
9488 | char *body; | |
9489 | ||
9490 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9491 | mac_ptr += bytes_read; | |
9492 | body = read_string (abfd, mac_ptr, &bytes_read); | |
9493 | mac_ptr += bytes_read; | |
9494 | ||
9495 | if (! current_file) | |
4d3c2250 | 9496 | complaint (&symfile_complaints, |
e2e0b3e5 | 9497 | _("debug info gives macro %s outside of any file: %s"), |
4d3c2250 KB |
9498 | macinfo_type == |
9499 | DW_MACINFO_define ? "definition" : macinfo_type == | |
9500 | DW_MACINFO_undef ? "undefinition" : | |
9501 | "something-or-other", body); | |
2e276125 JB |
9502 | else |
9503 | { | |
9504 | if (macinfo_type == DW_MACINFO_define) | |
9505 | parse_macro_definition (current_file, line, body); | |
9506 | else if (macinfo_type == DW_MACINFO_undef) | |
9507 | macro_undef (current_file, line, body); | |
9508 | } | |
9509 | } | |
9510 | break; | |
9511 | ||
9512 | case DW_MACINFO_start_file: | |
9513 | { | |
891d2f0b | 9514 | unsigned int bytes_read; |
2e276125 JB |
9515 | int line, file; |
9516 | ||
9517 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9518 | mac_ptr += bytes_read; | |
9519 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9520 | mac_ptr += bytes_read; | |
9521 | ||
9522 | current_file = macro_start_file (file, line, | |
9523 | current_file, comp_dir, | |
e7c27a73 | 9524 | lh, cu->objfile); |
2e276125 JB |
9525 | } |
9526 | break; | |
9527 | ||
9528 | case DW_MACINFO_end_file: | |
9529 | if (! current_file) | |
4d3c2250 | 9530 | complaint (&symfile_complaints, |
e2e0b3e5 | 9531 | _("macro debug info has an unmatched `close_file' directive")); |
2e276125 JB |
9532 | else |
9533 | { | |
9534 | current_file = current_file->included_by; | |
9535 | if (! current_file) | |
9536 | { | |
9537 | enum dwarf_macinfo_record_type next_type; | |
9538 | ||
9539 | /* GCC circa March 2002 doesn't produce the zero | |
9540 | type byte marking the end of the compilation | |
9541 | unit. Complain if it's not there, but exit no | |
9542 | matter what. */ | |
9543 | ||
9544 | /* Do we at least have room for a macinfo type byte? */ | |
9545 | if (mac_ptr >= mac_end) | |
9546 | { | |
4d3c2250 | 9547 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
9548 | return; |
9549 | } | |
9550 | ||
9551 | /* We don't increment mac_ptr here, so this is just | |
9552 | a look-ahead. */ | |
9553 | next_type = read_1_byte (abfd, mac_ptr); | |
9554 | if (next_type != 0) | |
4d3c2250 | 9555 | complaint (&symfile_complaints, |
e2e0b3e5 | 9556 | _("no terminating 0-type entry for macros in `.debug_macinfo' section")); |
2e276125 JB |
9557 | |
9558 | return; | |
9559 | } | |
9560 | } | |
9561 | break; | |
9562 | ||
9563 | case DW_MACINFO_vendor_ext: | |
9564 | { | |
891d2f0b | 9565 | unsigned int bytes_read; |
2e276125 JB |
9566 | int constant; |
9567 | char *string; | |
9568 | ||
9569 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
9570 | mac_ptr += bytes_read; | |
9571 | string = read_string (abfd, mac_ptr, &bytes_read); | |
9572 | mac_ptr += bytes_read; | |
9573 | ||
9574 | /* We don't recognize any vendor extensions. */ | |
9575 | } | |
9576 | break; | |
9577 | } | |
9578 | } | |
9579 | } | |
8e19ed76 PS |
9580 | |
9581 | /* Check if the attribute's form is a DW_FORM_block* | |
9582 | if so return true else false. */ | |
9583 | static int | |
9584 | attr_form_is_block (struct attribute *attr) | |
9585 | { | |
9586 | return (attr == NULL ? 0 : | |
9587 | attr->form == DW_FORM_block1 | |
9588 | || attr->form == DW_FORM_block2 | |
9589 | || attr->form == DW_FORM_block4 | |
9590 | || attr->form == DW_FORM_block); | |
9591 | } | |
4c2df51b DJ |
9592 | |
9593 | static void | |
9594 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 9595 | struct dwarf2_cu *cu) |
4c2df51b | 9596 | { |
99bcc461 DJ |
9597 | if ((attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) |
9598 | /* ".debug_loc" may not exist at all, or the offset may be outside | |
9599 | the section. If so, fall through to the complaint in the | |
9600 | other branch. */ | |
9601 | && DW_UNSND (attr) < dwarf2_per_objfile->loc_size) | |
4c2df51b | 9602 | { |
0d53c4c4 | 9603 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 9604 | |
4a146b47 | 9605 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9606 | sizeof (struct dwarf2_loclist_baton)); |
e7c27a73 | 9607 | baton->objfile = cu->objfile; |
4c2df51b | 9608 | |
0d53c4c4 DJ |
9609 | /* We don't know how long the location list is, but make sure we |
9610 | don't run off the edge of the section. */ | |
6502dd73 DJ |
9611 | baton->size = dwarf2_per_objfile->loc_size - DW_UNSND (attr); |
9612 | baton->data = dwarf2_per_objfile->loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
9613 | baton->base_address = cu->header.base_address; |
9614 | if (cu->header.base_known == 0) | |
0d53c4c4 | 9615 | complaint (&symfile_complaints, |
e2e0b3e5 | 9616 | _("Location list used without specifying the CU base address.")); |
4c2df51b | 9617 | |
a67af2b9 | 9618 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
9619 | SYMBOL_LOCATION_BATON (sym) = baton; |
9620 | } | |
9621 | else | |
9622 | { | |
9623 | struct dwarf2_locexpr_baton *baton; | |
9624 | ||
4a146b47 | 9625 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 9626 | sizeof (struct dwarf2_locexpr_baton)); |
e7c27a73 | 9627 | baton->objfile = cu->objfile; |
0d53c4c4 DJ |
9628 | |
9629 | if (attr_form_is_block (attr)) | |
9630 | { | |
9631 | /* Note that we're just copying the block's data pointer | |
9632 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
9633 | info_buffer for SYM's objfile; right now we never release |
9634 | that buffer, but when we do clean up properly this may | |
9635 | need to change. */ | |
0d53c4c4 DJ |
9636 | baton->size = DW_BLOCK (attr)->size; |
9637 | baton->data = DW_BLOCK (attr)->data; | |
9638 | } | |
9639 | else | |
9640 | { | |
9641 | dwarf2_invalid_attrib_class_complaint ("location description", | |
9642 | SYMBOL_NATURAL_NAME (sym)); | |
9643 | baton->size = 0; | |
9644 | baton->data = NULL; | |
9645 | } | |
9646 | ||
a67af2b9 | 9647 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
9648 | SYMBOL_LOCATION_BATON (sym) = baton; |
9649 | } | |
4c2df51b | 9650 | } |
6502dd73 | 9651 | |
ae038cb0 | 9652 | /* Locate the compilation unit from CU's objfile which contains the |
10b3939b | 9653 | DIE at OFFSET. Raises an error on failure. */ |
ae038cb0 DJ |
9654 | |
9655 | static struct dwarf2_per_cu_data * | |
9656 | dwarf2_find_containing_comp_unit (unsigned long offset, | |
9657 | struct objfile *objfile) | |
9658 | { | |
9659 | struct dwarf2_per_cu_data *this_cu; | |
9660 | int low, high; | |
9661 | ||
ae038cb0 DJ |
9662 | low = 0; |
9663 | high = dwarf2_per_objfile->n_comp_units - 1; | |
9664 | while (high > low) | |
9665 | { | |
9666 | int mid = low + (high - low) / 2; | |
9667 | if (dwarf2_per_objfile->all_comp_units[mid]->offset >= offset) | |
9668 | high = mid; | |
9669 | else | |
9670 | low = mid + 1; | |
9671 | } | |
9672 | gdb_assert (low == high); | |
9673 | if (dwarf2_per_objfile->all_comp_units[low]->offset > offset) | |
9674 | { | |
10b3939b | 9675 | if (low == 0) |
8a3fe4f8 AC |
9676 | error (_("Dwarf Error: could not find partial DIE containing " |
9677 | "offset 0x%lx [in module %s]"), | |
10b3939b DJ |
9678 | (long) offset, bfd_get_filename (objfile->obfd)); |
9679 | ||
ae038cb0 DJ |
9680 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->offset <= offset); |
9681 | return dwarf2_per_objfile->all_comp_units[low-1]; | |
9682 | } | |
9683 | else | |
9684 | { | |
9685 | this_cu = dwarf2_per_objfile->all_comp_units[low]; | |
9686 | if (low == dwarf2_per_objfile->n_comp_units - 1 | |
9687 | && offset >= this_cu->offset + this_cu->length) | |
8a3fe4f8 | 9688 | error (_("invalid dwarf2 offset %ld"), offset); |
ae038cb0 DJ |
9689 | gdb_assert (offset < this_cu->offset + this_cu->length); |
9690 | return this_cu; | |
9691 | } | |
9692 | } | |
9693 | ||
10b3939b DJ |
9694 | /* Locate the compilation unit from OBJFILE which is located at exactly |
9695 | OFFSET. Raises an error on failure. */ | |
9696 | ||
ae038cb0 DJ |
9697 | static struct dwarf2_per_cu_data * |
9698 | dwarf2_find_comp_unit (unsigned long offset, struct objfile *objfile) | |
9699 | { | |
9700 | struct dwarf2_per_cu_data *this_cu; | |
9701 | this_cu = dwarf2_find_containing_comp_unit (offset, objfile); | |
9702 | if (this_cu->offset != offset) | |
8a3fe4f8 | 9703 | error (_("no compilation unit with offset %ld."), offset); |
ae038cb0 DJ |
9704 | return this_cu; |
9705 | } | |
9706 | ||
9707 | /* Release one cached compilation unit, CU. We unlink it from the tree | |
9708 | of compilation units, but we don't remove it from the read_in_chain; | |
9709 | the caller is responsible for that. */ | |
9710 | ||
9711 | static void | |
9712 | free_one_comp_unit (void *data) | |
9713 | { | |
9714 | struct dwarf2_cu *cu = data; | |
9715 | ||
9716 | if (cu->per_cu != NULL) | |
9717 | cu->per_cu->cu = NULL; | |
9718 | cu->per_cu = NULL; | |
9719 | ||
9720 | obstack_free (&cu->comp_unit_obstack, NULL); | |
10b3939b DJ |
9721 | if (cu->dies) |
9722 | free_die_list (cu->dies); | |
ae038cb0 DJ |
9723 | |
9724 | xfree (cu); | |
9725 | } | |
9726 | ||
72bf9492 | 9727 | /* This cleanup function is passed the address of a dwarf2_cu on the stack |
ae038cb0 DJ |
9728 | when we're finished with it. We can't free the pointer itself, but be |
9729 | sure to unlink it from the cache. Also release any associated storage | |
9730 | and perform cache maintenance. | |
72bf9492 DJ |
9731 | |
9732 | Only used during partial symbol parsing. */ | |
9733 | ||
9734 | static void | |
9735 | free_stack_comp_unit (void *data) | |
9736 | { | |
9737 | struct dwarf2_cu *cu = data; | |
9738 | ||
9739 | obstack_free (&cu->comp_unit_obstack, NULL); | |
9740 | cu->partial_dies = NULL; | |
ae038cb0 DJ |
9741 | |
9742 | if (cu->per_cu != NULL) | |
9743 | { | |
9744 | /* This compilation unit is on the stack in our caller, so we | |
9745 | should not xfree it. Just unlink it. */ | |
9746 | cu->per_cu->cu = NULL; | |
9747 | cu->per_cu = NULL; | |
9748 | ||
9749 | /* If we had a per-cu pointer, then we may have other compilation | |
9750 | units loaded, so age them now. */ | |
9751 | age_cached_comp_units (); | |
9752 | } | |
9753 | } | |
9754 | ||
9755 | /* Free all cached compilation units. */ | |
9756 | ||
9757 | static void | |
9758 | free_cached_comp_units (void *data) | |
9759 | { | |
9760 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9761 | ||
9762 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9763 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9764 | while (per_cu != NULL) | |
9765 | { | |
9766 | struct dwarf2_per_cu_data *next_cu; | |
9767 | ||
9768 | next_cu = per_cu->cu->read_in_chain; | |
9769 | ||
9770 | free_one_comp_unit (per_cu->cu); | |
9771 | *last_chain = next_cu; | |
9772 | ||
9773 | per_cu = next_cu; | |
9774 | } | |
9775 | } | |
9776 | ||
9777 | /* Increase the age counter on each cached compilation unit, and free | |
9778 | any that are too old. */ | |
9779 | ||
9780 | static void | |
9781 | age_cached_comp_units (void) | |
9782 | { | |
9783 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9784 | ||
9785 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
9786 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9787 | while (per_cu != NULL) | |
9788 | { | |
9789 | per_cu->cu->last_used ++; | |
9790 | if (per_cu->cu->last_used <= dwarf2_max_cache_age) | |
9791 | dwarf2_mark (per_cu->cu); | |
9792 | per_cu = per_cu->cu->read_in_chain; | |
9793 | } | |
9794 | ||
9795 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9796 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9797 | while (per_cu != NULL) | |
9798 | { | |
9799 | struct dwarf2_per_cu_data *next_cu; | |
9800 | ||
9801 | next_cu = per_cu->cu->read_in_chain; | |
9802 | ||
9803 | if (!per_cu->cu->mark) | |
9804 | { | |
9805 | free_one_comp_unit (per_cu->cu); | |
9806 | *last_chain = next_cu; | |
9807 | } | |
9808 | else | |
9809 | last_chain = &per_cu->cu->read_in_chain; | |
9810 | ||
9811 | per_cu = next_cu; | |
9812 | } | |
9813 | } | |
9814 | ||
9815 | /* Remove a single compilation unit from the cache. */ | |
9816 | ||
9817 | static void | |
9818 | free_one_cached_comp_unit (void *target_cu) | |
9819 | { | |
9820 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
9821 | ||
9822 | per_cu = dwarf2_per_objfile->read_in_chain; | |
9823 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
9824 | while (per_cu != NULL) | |
9825 | { | |
9826 | struct dwarf2_per_cu_data *next_cu; | |
9827 | ||
9828 | next_cu = per_cu->cu->read_in_chain; | |
9829 | ||
9830 | if (per_cu->cu == target_cu) | |
9831 | { | |
9832 | free_one_comp_unit (per_cu->cu); | |
9833 | *last_chain = next_cu; | |
9834 | break; | |
9835 | } | |
9836 | else | |
9837 | last_chain = &per_cu->cu->read_in_chain; | |
9838 | ||
9839 | per_cu = next_cu; | |
9840 | } | |
9841 | } | |
9842 | ||
1c379e20 DJ |
9843 | /* A pair of DIE offset and GDB type pointer. We store these |
9844 | in a hash table separate from the DIEs, and preserve them | |
9845 | when the DIEs are flushed out of cache. */ | |
9846 | ||
9847 | struct dwarf2_offset_and_type | |
9848 | { | |
9849 | unsigned int offset; | |
9850 | struct type *type; | |
9851 | }; | |
9852 | ||
9853 | /* Hash function for a dwarf2_offset_and_type. */ | |
9854 | ||
9855 | static hashval_t | |
9856 | offset_and_type_hash (const void *item) | |
9857 | { | |
9858 | const struct dwarf2_offset_and_type *ofs = item; | |
9859 | return ofs->offset; | |
9860 | } | |
9861 | ||
9862 | /* Equality function for a dwarf2_offset_and_type. */ | |
9863 | ||
9864 | static int | |
9865 | offset_and_type_eq (const void *item_lhs, const void *item_rhs) | |
9866 | { | |
9867 | const struct dwarf2_offset_and_type *ofs_lhs = item_lhs; | |
9868 | const struct dwarf2_offset_and_type *ofs_rhs = item_rhs; | |
9869 | return ofs_lhs->offset == ofs_rhs->offset; | |
9870 | } | |
9871 | ||
9872 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
9873 | table if necessary. */ | |
9874 | ||
9875 | static void | |
9876 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) | |
9877 | { | |
9878 | struct dwarf2_offset_and_type **slot, ofs; | |
9879 | ||
9880 | die->type = type; | |
9881 | ||
9882 | if (cu->per_cu == NULL) | |
9883 | return; | |
9884 | ||
9885 | if (cu->per_cu->type_hash == NULL) | |
9886 | cu->per_cu->type_hash | |
9887 | = htab_create_alloc_ex (cu->header.length / 24, | |
9888 | offset_and_type_hash, | |
9889 | offset_and_type_eq, | |
9890 | NULL, | |
9891 | &cu->objfile->objfile_obstack, | |
9892 | hashtab_obstack_allocate, | |
9893 | dummy_obstack_deallocate); | |
9894 | ||
9895 | ofs.offset = die->offset; | |
9896 | ofs.type = type; | |
9897 | slot = (struct dwarf2_offset_and_type **) | |
9898 | htab_find_slot_with_hash (cu->per_cu->type_hash, &ofs, ofs.offset, INSERT); | |
9899 | *slot = obstack_alloc (&cu->objfile->objfile_obstack, sizeof (**slot)); | |
9900 | **slot = ofs; | |
9901 | } | |
9902 | ||
1c379e20 DJ |
9903 | /* Find the type for DIE in TYPE_HASH, or return NULL if DIE does not |
9904 | have a saved type. */ | |
9905 | ||
9906 | static struct type * | |
9907 | get_die_type (struct die_info *die, htab_t type_hash) | |
9908 | { | |
9909 | struct dwarf2_offset_and_type *slot, ofs; | |
9910 | ||
9911 | ofs.offset = die->offset; | |
9912 | slot = htab_find_with_hash (type_hash, &ofs, ofs.offset); | |
9913 | if (slot) | |
9914 | return slot->type; | |
9915 | else | |
9916 | return NULL; | |
9917 | } | |
9918 | ||
9919 | /* Restore the types of the DIE tree starting at START_DIE from the hash | |
9920 | table saved in CU. */ | |
9921 | ||
9922 | static void | |
9923 | reset_die_and_siblings_types (struct die_info *start_die, struct dwarf2_cu *cu) | |
9924 | { | |
9925 | struct die_info *die; | |
9926 | ||
9927 | if (cu->per_cu->type_hash == NULL) | |
9928 | return; | |
9929 | ||
9930 | for (die = start_die; die != NULL; die = die->sibling) | |
9931 | { | |
9932 | die->type = get_die_type (die, cu->per_cu->type_hash); | |
9933 | if (die->child != NULL) | |
9934 | reset_die_and_siblings_types (die->child, cu); | |
9935 | } | |
9936 | } | |
9937 | ||
10b3939b DJ |
9938 | /* Set the mark field in CU and in every other compilation unit in the |
9939 | cache that we must keep because we are keeping CU. */ | |
9940 | ||
9941 | /* Add a dependence relationship from CU to REF_PER_CU. */ | |
9942 | ||
9943 | static void | |
9944 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
9945 | struct dwarf2_per_cu_data *ref_per_cu) | |
9946 | { | |
9947 | void **slot; | |
9948 | ||
9949 | if (cu->dependencies == NULL) | |
9950 | cu->dependencies | |
9951 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
9952 | NULL, &cu->comp_unit_obstack, | |
9953 | hashtab_obstack_allocate, | |
9954 | dummy_obstack_deallocate); | |
9955 | ||
9956 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
9957 | if (*slot == NULL) | |
9958 | *slot = ref_per_cu; | |
9959 | } | |
1c379e20 | 9960 | |
ae038cb0 DJ |
9961 | /* Set the mark field in CU and in every other compilation unit in the |
9962 | cache that we must keep because we are keeping CU. */ | |
9963 | ||
10b3939b DJ |
9964 | static int |
9965 | dwarf2_mark_helper (void **slot, void *data) | |
9966 | { | |
9967 | struct dwarf2_per_cu_data *per_cu; | |
9968 | ||
9969 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
9970 | if (per_cu->cu->mark) | |
9971 | return 1; | |
9972 | per_cu->cu->mark = 1; | |
9973 | ||
9974 | if (per_cu->cu->dependencies != NULL) | |
9975 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
9976 | ||
9977 | return 1; | |
9978 | } | |
9979 | ||
ae038cb0 DJ |
9980 | static void |
9981 | dwarf2_mark (struct dwarf2_cu *cu) | |
9982 | { | |
9983 | if (cu->mark) | |
9984 | return; | |
9985 | cu->mark = 1; | |
10b3939b DJ |
9986 | if (cu->dependencies != NULL) |
9987 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
9988 | } |
9989 | ||
9990 | static void | |
9991 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
9992 | { | |
9993 | while (per_cu) | |
9994 | { | |
9995 | per_cu->cu->mark = 0; | |
9996 | per_cu = per_cu->cu->read_in_chain; | |
9997 | } | |
72bf9492 DJ |
9998 | } |
9999 | ||
72bf9492 DJ |
10000 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
10001 | is its offset in .debug_info for this objfile. */ | |
10002 | ||
10003 | static hashval_t | |
10004 | partial_die_hash (const void *item) | |
10005 | { | |
10006 | const struct partial_die_info *part_die = item; | |
10007 | return part_die->offset; | |
10008 | } | |
10009 | ||
10010 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
10011 | are equal if they have the same offset. */ | |
10012 | ||
10013 | static int | |
10014 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
10015 | { | |
10016 | const struct partial_die_info *part_die_lhs = item_lhs; | |
10017 | const struct partial_die_info *part_die_rhs = item_rhs; | |
10018 | return part_die_lhs->offset == part_die_rhs->offset; | |
10019 | } | |
10020 | ||
ae038cb0 DJ |
10021 | static struct cmd_list_element *set_dwarf2_cmdlist; |
10022 | static struct cmd_list_element *show_dwarf2_cmdlist; | |
10023 | ||
10024 | static void | |
10025 | set_dwarf2_cmd (char *args, int from_tty) | |
10026 | { | |
10027 | help_list (set_dwarf2_cmdlist, "maintenance set dwarf2 ", -1, gdb_stdout); | |
10028 | } | |
10029 | ||
10030 | static void | |
10031 | show_dwarf2_cmd (char *args, int from_tty) | |
10032 | { | |
10033 | cmd_show_list (show_dwarf2_cmdlist, from_tty, ""); | |
10034 | } | |
10035 | ||
6502dd73 DJ |
10036 | void _initialize_dwarf2_read (void); |
10037 | ||
10038 | void | |
10039 | _initialize_dwarf2_read (void) | |
10040 | { | |
10041 | dwarf2_objfile_data_key = register_objfile_data (); | |
ae038cb0 | 10042 | |
1bedd215 AC |
10043 | add_prefix_cmd ("dwarf2", class_maintenance, set_dwarf2_cmd, _("\ |
10044 | Set DWARF 2 specific variables.\n\ | |
10045 | Configure DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10046 | &set_dwarf2_cmdlist, "maintenance set dwarf2 ", |
10047 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
10048 | ||
1bedd215 AC |
10049 | add_prefix_cmd ("dwarf2", class_maintenance, show_dwarf2_cmd, _("\ |
10050 | Show DWARF 2 specific variables\n\ | |
10051 | Show DWARF 2 variables such as the cache size"), | |
ae038cb0 DJ |
10052 | &show_dwarf2_cmdlist, "maintenance show dwarf2 ", |
10053 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
10054 | ||
10055 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, | |
7915a72c AC |
10056 | &dwarf2_max_cache_age, _("\ |
10057 | Set the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10058 | Show the upper bound on the age of cached dwarf2 compilation units."), _("\ | |
10059 | A higher limit means that cached compilation units will be stored\n\ | |
10060 | in memory longer, and more total memory will be used. Zero disables\n\ | |
10061 | caching, which can slow down startup."), | |
2c5b56ce | 10062 | NULL, |
920d2a44 | 10063 | show_dwarf2_max_cache_age, |
2c5b56ce | 10064 | &set_dwarf2_cmdlist, |
ae038cb0 | 10065 | &show_dwarf2_cmdlist); |
6502dd73 | 10066 | } |