Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
b44e9041 EZ |
2 | Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
3 | 2004 | |
8e65ff28 | 4 | Free Software Foundation, Inc. |
c906108c SS |
5 | |
6 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
7 | Inc. with support from Florida State University (under contract | |
8 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
9 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
10 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
11 | support in dwarfread.c | |
12 | ||
c5aa993b | 13 | This file is part of GDB. |
c906108c | 14 | |
c5aa993b JM |
15 | This program is free software; you can redistribute it and/or modify |
16 | it under the terms of the GNU General Public License as published by | |
17 | the Free Software Foundation; either version 2 of the License, or (at | |
18 | your option) any later version. | |
c906108c | 19 | |
c5aa993b JM |
20 | This program is distributed in the hope that it will be useful, but |
21 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
23 | General Public License for more details. | |
c906108c | 24 | |
c5aa993b JM |
25 | You should have received a copy of the GNU General Public License |
26 | along with this program; if not, write to the Free Software | |
27 | Foundation, Inc., 59 Temple Place - Suite 330, | |
28 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
29 | |
30 | #include "defs.h" | |
31 | #include "bfd.h" | |
c906108c SS |
32 | #include "symtab.h" |
33 | #include "gdbtypes.h" | |
c906108c SS |
34 | #include "objfiles.h" |
35 | #include "elf/dwarf2.h" | |
36 | #include "buildsym.h" | |
37 | #include "demangle.h" | |
38 | #include "expression.h" | |
d5166ae1 | 39 | #include "filenames.h" /* for DOSish file names */ |
2e276125 | 40 | #include "macrotab.h" |
c906108c SS |
41 | #include "language.h" |
42 | #include "complaints.h" | |
357e46e7 | 43 | #include "bcache.h" |
4c2df51b DJ |
44 | #include "dwarf2expr.h" |
45 | #include "dwarf2loc.h" | |
9219021c | 46 | #include "cp-support.h" |
4c2df51b | 47 | |
c906108c SS |
48 | #include <fcntl.h> |
49 | #include "gdb_string.h" | |
4bdf3d34 | 50 | #include "gdb_assert.h" |
c906108c SS |
51 | #include <sys/types.h> |
52 | ||
d8151005 DJ |
53 | /* A note on memory usage for this file. |
54 | ||
55 | At the present time, this code reads the debug info sections into | |
56 | the objfile's objfile_obstack. A definite improvement for startup | |
57 | time, on platforms which do not emit relocations for debug | |
58 | sections, would be to use mmap instead. The object's complete | |
59 | debug information is loaded into memory, partly to simplify | |
60 | absolute DIE references. | |
61 | ||
62 | Whether using obstacks or mmap, the sections should remain loaded | |
63 | until the objfile is released, and pointers into the section data | |
64 | can be used for any other data associated to the objfile (symbol | |
65 | names, type names, location expressions to name a few). */ | |
66 | ||
88496bb5 MS |
67 | #ifndef DWARF2_REG_TO_REGNUM |
68 | #define DWARF2_REG_TO_REGNUM(REG) (REG) | |
69 | #endif | |
70 | ||
107d2387 | 71 | #if 0 |
357e46e7 | 72 | /* .debug_info header for a compilation unit |
c906108c SS |
73 | Because of alignment constraints, this structure has padding and cannot |
74 | be mapped directly onto the beginning of the .debug_info section. */ | |
75 | typedef struct comp_unit_header | |
76 | { | |
77 | unsigned int length; /* length of the .debug_info | |
78 | contribution */ | |
79 | unsigned short version; /* version number -- 2 for DWARF | |
80 | version 2 */ | |
81 | unsigned int abbrev_offset; /* offset into .debug_abbrev section */ | |
82 | unsigned char addr_size; /* byte size of an address -- 4 */ | |
83 | } | |
84 | _COMP_UNIT_HEADER; | |
85 | #define _ACTUAL_COMP_UNIT_HEADER_SIZE 11 | |
107d2387 | 86 | #endif |
c906108c SS |
87 | |
88 | /* .debug_pubnames header | |
89 | Because of alignment constraints, this structure has padding and cannot | |
90 | be mapped directly onto the beginning of the .debug_info section. */ | |
91 | typedef struct pubnames_header | |
92 | { | |
93 | unsigned int length; /* length of the .debug_pubnames | |
94 | contribution */ | |
95 | unsigned char version; /* version number -- 2 for DWARF | |
96 | version 2 */ | |
97 | unsigned int info_offset; /* offset into .debug_info section */ | |
98 | unsigned int info_size; /* byte size of .debug_info section | |
99 | portion */ | |
100 | } | |
101 | _PUBNAMES_HEADER; | |
102 | #define _ACTUAL_PUBNAMES_HEADER_SIZE 13 | |
103 | ||
104 | /* .debug_pubnames header | |
105 | Because of alignment constraints, this structure has padding and cannot | |
106 | be mapped directly onto the beginning of the .debug_info section. */ | |
107 | typedef struct aranges_header | |
108 | { | |
109 | unsigned int length; /* byte len of the .debug_aranges | |
110 | contribution */ | |
111 | unsigned short version; /* version number -- 2 for DWARF | |
112 | version 2 */ | |
113 | unsigned int info_offset; /* offset into .debug_info section */ | |
114 | unsigned char addr_size; /* byte size of an address */ | |
115 | unsigned char seg_size; /* byte size of segment descriptor */ | |
116 | } | |
117 | _ARANGES_HEADER; | |
118 | #define _ACTUAL_ARANGES_HEADER_SIZE 12 | |
119 | ||
120 | /* .debug_line statement program prologue | |
121 | Because of alignment constraints, this structure has padding and cannot | |
122 | be mapped directly onto the beginning of the .debug_info section. */ | |
123 | typedef struct statement_prologue | |
124 | { | |
125 | unsigned int total_length; /* byte length of the statement | |
126 | information */ | |
127 | unsigned short version; /* version number -- 2 for DWARF | |
128 | version 2 */ | |
129 | unsigned int prologue_length; /* # bytes between prologue & | |
130 | stmt program */ | |
131 | unsigned char minimum_instruction_length; /* byte size of | |
132 | smallest instr */ | |
133 | unsigned char default_is_stmt; /* initial value of is_stmt | |
134 | register */ | |
135 | char line_base; | |
136 | unsigned char line_range; | |
137 | unsigned char opcode_base; /* number assigned to first special | |
138 | opcode */ | |
139 | unsigned char *standard_opcode_lengths; | |
140 | } | |
141 | _STATEMENT_PROLOGUE; | |
142 | ||
6502dd73 DJ |
143 | static const struct objfile_data *dwarf2_objfile_data_key; |
144 | ||
145 | struct dwarf2_per_objfile | |
146 | { | |
147 | /* Sizes of debugging sections. */ | |
148 | unsigned int info_size; | |
149 | unsigned int abbrev_size; | |
150 | unsigned int line_size; | |
151 | unsigned int pubnames_size; | |
152 | unsigned int aranges_size; | |
153 | unsigned int loc_size; | |
154 | unsigned int macinfo_size; | |
155 | unsigned int str_size; | |
156 | unsigned int ranges_size; | |
157 | unsigned int frame_size; | |
158 | unsigned int eh_frame_size; | |
159 | ||
160 | /* Loaded data from the sections. */ | |
161 | char *info_buffer; | |
162 | char *abbrev_buffer; | |
163 | char *line_buffer; | |
164 | char *str_buffer; | |
165 | char *macinfo_buffer; | |
166 | char *ranges_buffer; | |
167 | char *loc_buffer; | |
168 | }; | |
169 | ||
170 | static struct dwarf2_per_objfile *dwarf2_per_objfile; | |
c906108c | 171 | |
086df311 DJ |
172 | static asection *dwarf_info_section; |
173 | static asection *dwarf_abbrev_section; | |
174 | static asection *dwarf_line_section; | |
175 | static asection *dwarf_pubnames_section; | |
176 | static asection *dwarf_aranges_section; | |
177 | static asection *dwarf_loc_section; | |
178 | static asection *dwarf_macinfo_section; | |
179 | static asection *dwarf_str_section; | |
180 | static asection *dwarf_ranges_section; | |
181 | asection *dwarf_frame_section; | |
182 | asection *dwarf_eh_frame_section; | |
183 | ||
c906108c SS |
184 | /* names of the debugging sections */ |
185 | ||
186 | #define INFO_SECTION ".debug_info" | |
187 | #define ABBREV_SECTION ".debug_abbrev" | |
188 | #define LINE_SECTION ".debug_line" | |
189 | #define PUBNAMES_SECTION ".debug_pubnames" | |
190 | #define ARANGES_SECTION ".debug_aranges" | |
191 | #define LOC_SECTION ".debug_loc" | |
192 | #define MACINFO_SECTION ".debug_macinfo" | |
193 | #define STR_SECTION ".debug_str" | |
af34e669 | 194 | #define RANGES_SECTION ".debug_ranges" |
b6af0555 JS |
195 | #define FRAME_SECTION ".debug_frame" |
196 | #define EH_FRAME_SECTION ".eh_frame" | |
c906108c SS |
197 | |
198 | /* local data types */ | |
199 | ||
57349743 JB |
200 | /* We hold several abbreviation tables in memory at the same time. */ |
201 | #ifndef ABBREV_HASH_SIZE | |
202 | #define ABBREV_HASH_SIZE 121 | |
203 | #endif | |
204 | ||
107d2387 AC |
205 | /* The data in a compilation unit header, after target2host |
206 | translation, looks like this. */ | |
c906108c SS |
207 | struct comp_unit_head |
208 | { | |
613e1657 | 209 | unsigned long length; |
c906108c SS |
210 | short version; |
211 | unsigned int abbrev_offset; | |
212 | unsigned char addr_size; | |
107d2387 | 213 | unsigned char signed_addr_p; |
613e1657 KB |
214 | unsigned int offset_size; /* size of file offsets; either 4 or 8 */ |
215 | unsigned int initial_length_size; /* size of the length field; either | |
216 | 4 or 12 */ | |
57349743 JB |
217 | |
218 | /* Offset to the first byte of this compilation unit header in the | |
219 | * .debug_info section, for resolving relative reference dies. */ | |
220 | ||
221 | unsigned int offset; | |
222 | ||
223 | /* Pointer to this compilation unit header in the .debug_info | |
224 | * section */ | |
225 | ||
226 | char *cu_head_ptr; | |
227 | ||
228 | /* Pointer to the first die of this compilatio unit. This will | |
229 | * be the first byte following the compilation unit header. */ | |
230 | ||
231 | char *first_die_ptr; | |
232 | ||
233 | /* Pointer to the next compilation unit header in the program. */ | |
234 | ||
235 | struct comp_unit_head *next; | |
236 | ||
0d53c4c4 | 237 | /* Base address of this compilation unit. */ |
af34e669 | 238 | |
0d53c4c4 DJ |
239 | CORE_ADDR base_address; |
240 | ||
241 | /* Non-zero if base_address has been set. */ | |
242 | ||
243 | int base_known; | |
c906108c SS |
244 | }; |
245 | ||
e7c27a73 DJ |
246 | /* Internal state when decoding a particular compilation unit. */ |
247 | struct dwarf2_cu | |
248 | { | |
249 | /* The objfile containing this compilation unit. */ | |
250 | struct objfile *objfile; | |
251 | ||
252 | /* The header of the compilation unit. | |
253 | ||
254 | FIXME drow/2003-11-10: Some of the things from the comp_unit_head | |
f3dd6933 | 255 | should logically be moved to the dwarf2_cu structure. */ |
e7c27a73 | 256 | struct comp_unit_head header; |
e142c38c DJ |
257 | |
258 | struct function_range *first_fn, *last_fn, *cached_fn; | |
259 | ||
260 | /* The language we are debugging. */ | |
261 | enum language language; | |
262 | const struct language_defn *language_defn; | |
263 | ||
264 | /* The generic symbol table building routines have separate lists for | |
265 | file scope symbols and all all other scopes (local scopes). So | |
266 | we need to select the right one to pass to add_symbol_to_list(). | |
267 | We do it by keeping a pointer to the correct list in list_in_scope. | |
268 | ||
269 | FIXME: The original dwarf code just treated the file scope as the | |
270 | first local scope, and all other local scopes as nested local | |
271 | scopes, and worked fine. Check to see if we really need to | |
272 | distinguish these in buildsym.c. */ | |
273 | struct pending **list_in_scope; | |
274 | ||
275 | /* Maintain an array of referenced fundamental types for the current | |
276 | compilation unit being read. For DWARF version 1, we have to construct | |
277 | the fundamental types on the fly, since no information about the | |
278 | fundamental types is supplied. Each such fundamental type is created by | |
279 | calling a language dependent routine to create the type, and then a | |
280 | pointer to that type is then placed in the array at the index specified | |
281 | by it's FT_<TYPENAME> value. The array has a fixed size set by the | |
282 | FT_NUM_MEMBERS compile time constant, which is the number of predefined | |
283 | fundamental types gdb knows how to construct. */ | |
284 | struct type *ftypes[FT_NUM_MEMBERS]; /* Fundamental types */ | |
f3dd6933 DJ |
285 | |
286 | /* DWARF abbreviation table associated with this compilation unit. */ | |
287 | struct abbrev_info **dwarf2_abbrevs; | |
288 | ||
289 | /* Storage for the abbrev table. */ | |
290 | struct obstack abbrev_obstack; | |
e7c27a73 DJ |
291 | }; |
292 | ||
debd256d JB |
293 | /* The line number information for a compilation unit (found in the |
294 | .debug_line section) begins with a "statement program header", | |
295 | which contains the following information. */ | |
296 | struct line_header | |
297 | { | |
298 | unsigned int total_length; | |
299 | unsigned short version; | |
300 | unsigned int header_length; | |
301 | unsigned char minimum_instruction_length; | |
302 | unsigned char default_is_stmt; | |
303 | int line_base; | |
304 | unsigned char line_range; | |
305 | unsigned char opcode_base; | |
306 | ||
307 | /* standard_opcode_lengths[i] is the number of operands for the | |
308 | standard opcode whose value is i. This means that | |
309 | standard_opcode_lengths[0] is unused, and the last meaningful | |
310 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
311 | unsigned char *standard_opcode_lengths; | |
312 | ||
313 | /* The include_directories table. NOTE! These strings are not | |
314 | allocated with xmalloc; instead, they are pointers into | |
315 | debug_line_buffer. If you try to free them, `free' will get | |
316 | indigestion. */ | |
317 | unsigned int num_include_dirs, include_dirs_size; | |
318 | char **include_dirs; | |
319 | ||
320 | /* The file_names table. NOTE! These strings are not allocated | |
321 | with xmalloc; instead, they are pointers into debug_line_buffer. | |
322 | Don't try to free them directly. */ | |
323 | unsigned int num_file_names, file_names_size; | |
324 | struct file_entry | |
c906108c | 325 | { |
debd256d JB |
326 | char *name; |
327 | unsigned int dir_index; | |
328 | unsigned int mod_time; | |
329 | unsigned int length; | |
330 | } *file_names; | |
331 | ||
332 | /* The start and end of the statement program following this | |
6502dd73 | 333 | header. These point into dwarf2_per_objfile->line_buffer. */ |
debd256d JB |
334 | char *statement_program_start, *statement_program_end; |
335 | }; | |
c906108c SS |
336 | |
337 | /* When we construct a partial symbol table entry we only | |
338 | need this much information. */ | |
339 | struct partial_die_info | |
340 | { | |
341 | enum dwarf_tag tag; | |
342 | unsigned char has_children; | |
343 | unsigned char is_external; | |
344 | unsigned char is_declaration; | |
345 | unsigned char has_type; | |
346 | unsigned int offset; | |
347 | unsigned int abbrev; | |
348 | char *name; | |
0b010bcc | 349 | int has_pc_info; |
c906108c SS |
350 | CORE_ADDR lowpc; |
351 | CORE_ADDR highpc; | |
352 | struct dwarf_block *locdesc; | |
353 | unsigned int language; | |
354 | char *sibling; | |
355 | }; | |
356 | ||
357 | /* This data structure holds the information of an abbrev. */ | |
358 | struct abbrev_info | |
359 | { | |
360 | unsigned int number; /* number identifying abbrev */ | |
361 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
362 | unsigned short has_children; /* boolean */ |
363 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
364 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
365 | struct abbrev_info *next; /* next in chain */ | |
366 | }; | |
367 | ||
368 | struct attr_abbrev | |
369 | { | |
370 | enum dwarf_attribute name; | |
371 | enum dwarf_form form; | |
372 | }; | |
373 | ||
374 | /* This data structure holds a complete die structure. */ | |
375 | struct die_info | |
376 | { | |
c5aa993b | 377 | enum dwarf_tag tag; /* Tag indicating type of die */ |
c5aa993b JM |
378 | unsigned int abbrev; /* Abbrev number */ |
379 | unsigned int offset; /* Offset in .debug_info section */ | |
380 | unsigned int num_attrs; /* Number of attributes */ | |
381 | struct attribute *attrs; /* An array of attributes */ | |
382 | struct die_info *next_ref; /* Next die in ref hash table */ | |
78ba4af6 JB |
383 | |
384 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
385 | points to this die's parent; CHILD points to the first child of | |
386 | this node; and all the children of a given node are chained | |
387 | together via their SIBLING fields, terminated by a die whose | |
388 | tag is zero. */ | |
639d11d3 DC |
389 | struct die_info *child; /* Its first child, if any. */ |
390 | struct die_info *sibling; /* Its next sibling, if any. */ | |
391 | struct die_info *parent; /* Its parent, if any. */ | |
78ba4af6 | 392 | |
c5aa993b | 393 | struct type *type; /* Cached type information */ |
c906108c SS |
394 | }; |
395 | ||
396 | /* Attributes have a name and a value */ | |
397 | struct attribute | |
398 | { | |
399 | enum dwarf_attribute name; | |
400 | enum dwarf_form form; | |
401 | union | |
402 | { | |
403 | char *str; | |
404 | struct dwarf_block *blk; | |
ce5d95e1 JB |
405 | unsigned long unsnd; |
406 | long int snd; | |
c906108c SS |
407 | CORE_ADDR addr; |
408 | } | |
409 | u; | |
410 | }; | |
411 | ||
5fb290d7 DJ |
412 | struct function_range |
413 | { | |
414 | const char *name; | |
415 | CORE_ADDR lowpc, highpc; | |
416 | int seen_line; | |
417 | struct function_range *next; | |
418 | }; | |
419 | ||
c906108c SS |
420 | /* Get at parts of an attribute structure */ |
421 | ||
422 | #define DW_STRING(attr) ((attr)->u.str) | |
423 | #define DW_UNSND(attr) ((attr)->u.unsnd) | |
424 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
425 | #define DW_SND(attr) ((attr)->u.snd) | |
426 | #define DW_ADDR(attr) ((attr)->u.addr) | |
427 | ||
428 | /* Blocks are a bunch of untyped bytes. */ | |
429 | struct dwarf_block | |
430 | { | |
431 | unsigned int size; | |
432 | char *data; | |
433 | }; | |
434 | ||
c906108c SS |
435 | #ifndef ATTR_ALLOC_CHUNK |
436 | #define ATTR_ALLOC_CHUNK 4 | |
437 | #endif | |
438 | ||
c906108c SS |
439 | /* A hash table of die offsets for following references. */ |
440 | #ifndef REF_HASH_SIZE | |
441 | #define REF_HASH_SIZE 1021 | |
442 | #endif | |
443 | ||
444 | static struct die_info *die_ref_table[REF_HASH_SIZE]; | |
445 | ||
446 | /* Obstack for allocating temporary storage used during symbol reading. */ | |
447 | static struct obstack dwarf2_tmp_obstack; | |
448 | ||
c906108c SS |
449 | /* Allocate fields for structs, unions and enums in this size. */ |
450 | #ifndef DW_FIELD_ALLOC_CHUNK | |
451 | #define DW_FIELD_ALLOC_CHUNK 4 | |
452 | #endif | |
453 | ||
c906108c SS |
454 | /* A zeroed version of a partial die for initialization purposes. */ |
455 | static struct partial_die_info zeroed_partial_die; | |
456 | ||
7a292a7a SS |
457 | /* FIXME: decode_locdesc sets these variables to describe the location |
458 | to the caller. These ought to be a structure or something. If | |
459 | none of the flags are set, the object lives at the address returned | |
460 | by decode_locdesc. */ | |
461 | ||
7a292a7a SS |
462 | static int isreg; /* Object lives in register. |
463 | decode_locdesc's return value is | |
464 | the register number. */ | |
c906108c | 465 | |
c906108c | 466 | /* We put a pointer to this structure in the read_symtab_private field |
6502dd73 | 467 | of the psymtab. */ |
c906108c SS |
468 | |
469 | struct dwarf2_pinfo | |
c5aa993b | 470 | { |
6502dd73 | 471 | /* Offset in .debug_info for this compilation unit. */ |
c906108c | 472 | |
c5aa993b | 473 | unsigned long dwarf_info_offset; |
c5aa993b | 474 | }; |
c906108c SS |
475 | |
476 | #define PST_PRIVATE(p) ((struct dwarf2_pinfo *)(p)->read_symtab_private) | |
c906108c | 477 | #define DWARF_INFO_OFFSET(p) (PST_PRIVATE(p)->dwarf_info_offset) |
c906108c | 478 | |
c906108c SS |
479 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
480 | but this would require a corresponding change in unpack_field_as_long | |
481 | and friends. */ | |
482 | static int bits_per_byte = 8; | |
483 | ||
484 | /* The routines that read and process dies for a C struct or C++ class | |
485 | pass lists of data member fields and lists of member function fields | |
486 | in an instance of a field_info structure, as defined below. */ | |
487 | struct field_info | |
c5aa993b JM |
488 | { |
489 | /* List of data member and baseclasses fields. */ | |
490 | struct nextfield | |
491 | { | |
492 | struct nextfield *next; | |
493 | int accessibility; | |
494 | int virtuality; | |
495 | struct field field; | |
496 | } | |
497 | *fields; | |
c906108c | 498 | |
c5aa993b JM |
499 | /* Number of fields. */ |
500 | int nfields; | |
c906108c | 501 | |
c5aa993b JM |
502 | /* Number of baseclasses. */ |
503 | int nbaseclasses; | |
c906108c | 504 | |
c5aa993b JM |
505 | /* Set if the accesibility of one of the fields is not public. */ |
506 | int non_public_fields; | |
c906108c | 507 | |
c5aa993b JM |
508 | /* Member function fields array, entries are allocated in the order they |
509 | are encountered in the object file. */ | |
510 | struct nextfnfield | |
511 | { | |
512 | struct nextfnfield *next; | |
513 | struct fn_field fnfield; | |
514 | } | |
515 | *fnfields; | |
c906108c | 516 | |
c5aa993b JM |
517 | /* Member function fieldlist array, contains name of possibly overloaded |
518 | member function, number of overloaded member functions and a pointer | |
519 | to the head of the member function field chain. */ | |
520 | struct fnfieldlist | |
521 | { | |
522 | char *name; | |
523 | int length; | |
524 | struct nextfnfield *head; | |
525 | } | |
526 | *fnfieldlists; | |
c906108c | 527 | |
c5aa993b JM |
528 | /* Number of entries in the fnfieldlists array. */ |
529 | int nfnfields; | |
530 | }; | |
c906108c | 531 | |
c906108c SS |
532 | /* Various complaints about symbol reading that don't abort the process */ |
533 | ||
4d3c2250 KB |
534 | static void |
535 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2e276125 | 536 | { |
4d3c2250 KB |
537 | complaint (&symfile_complaints, |
538 | "statement list doesn't fit in .debug_line section"); | |
539 | } | |
540 | ||
541 | static void | |
542 | dwarf2_complex_location_expr_complaint (void) | |
2e276125 | 543 | { |
4d3c2250 KB |
544 | complaint (&symfile_complaints, "location expression too complex"); |
545 | } | |
546 | ||
4d3c2250 KB |
547 | static void |
548 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
549 | int arg3) | |
2e276125 | 550 | { |
4d3c2250 KB |
551 | complaint (&symfile_complaints, |
552 | "const value length mismatch for '%s', got %d, expected %d", arg1, | |
553 | arg2, arg3); | |
554 | } | |
555 | ||
556 | static void | |
557 | dwarf2_macros_too_long_complaint (void) | |
2e276125 | 558 | { |
4d3c2250 KB |
559 | complaint (&symfile_complaints, |
560 | "macro info runs off end of `.debug_macinfo' section"); | |
561 | } | |
562 | ||
563 | static void | |
564 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
8e19ed76 | 565 | { |
4d3c2250 KB |
566 | complaint (&symfile_complaints, |
567 | "macro debug info contains a malformed macro definition:\n`%s'", | |
568 | arg1); | |
569 | } | |
570 | ||
571 | static void | |
572 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
8b2dbe47 | 573 | { |
4d3c2250 KB |
574 | complaint (&symfile_complaints, |
575 | "invalid attribute class or form for '%s' in '%s'", arg1, arg2); | |
576 | } | |
c906108c | 577 | |
c906108c SS |
578 | /* local function prototypes */ |
579 | ||
4efb68b1 | 580 | static void dwarf2_locate_sections (bfd *, asection *, void *); |
c906108c SS |
581 | |
582 | #if 0 | |
a14ed312 | 583 | static void dwarf2_build_psymtabs_easy (struct objfile *, int); |
c906108c SS |
584 | #endif |
585 | ||
a14ed312 | 586 | static void dwarf2_build_psymtabs_hard (struct objfile *, int); |
c906108c | 587 | |
e7c27a73 DJ |
588 | static char *scan_partial_symbols (char *, CORE_ADDR *, CORE_ADDR *, |
589 | struct dwarf2_cu *, | |
5c4e30ca | 590 | const char *namespace); |
c906108c | 591 | |
e7c27a73 | 592 | static void add_partial_symbol (struct partial_die_info *, struct dwarf2_cu *, |
5c4e30ca | 593 | const char *namespace); |
c906108c | 594 | |
63d06c5c DC |
595 | static int pdi_needs_namespace (enum dwarf_tag tag, const char *namespace); |
596 | ||
91c24f0a DC |
597 | static char *add_partial_namespace (struct partial_die_info *pdi, |
598 | char *info_ptr, | |
91c24f0a | 599 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
e7c27a73 | 600 | struct dwarf2_cu *cu, |
5c4e30ca | 601 | const char *namespace); |
91c24f0a | 602 | |
63d06c5c DC |
603 | static char *add_partial_structure (struct partial_die_info *struct_pdi, |
604 | char *info_ptr, | |
605 | struct dwarf2_cu *cu, | |
606 | const char *namespace); | |
607 | ||
91c24f0a DC |
608 | static char *add_partial_enumeration (struct partial_die_info *enum_pdi, |
609 | char *info_ptr, | |
e7c27a73 | 610 | struct dwarf2_cu *cu, |
5c4e30ca | 611 | const char *namespace); |
91c24f0a DC |
612 | |
613 | static char *locate_pdi_sibling (struct partial_die_info *orig_pdi, | |
614 | char *info_ptr, | |
615 | bfd *abfd, | |
e7c27a73 | 616 | struct dwarf2_cu *cu); |
91c24f0a | 617 | |
a14ed312 | 618 | static void dwarf2_psymtab_to_symtab (struct partial_symtab *); |
c906108c | 619 | |
a14ed312 | 620 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 621 | |
188dd5d6 | 622 | char *dwarf2_read_section (struct objfile *, asection *); |
c906108c | 623 | |
e7c27a73 | 624 | static void dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu); |
c906108c | 625 | |
f3dd6933 | 626 | static void dwarf2_free_abbrev_table (void *); |
c906108c | 627 | |
57349743 | 628 | static struct abbrev_info *dwarf2_lookup_abbrev (unsigned int, |
e7c27a73 | 629 | struct dwarf2_cu *); |
c906108c | 630 | |
a14ed312 | 631 | static char *read_partial_die (struct partial_die_info *, |
e7c27a73 | 632 | bfd *, char *, struct dwarf2_cu *); |
c906108c | 633 | |
107d2387 | 634 | static char *read_full_die (struct die_info **, bfd *, char *, |
e7c27a73 | 635 | struct dwarf2_cu *, int *); |
c906108c | 636 | |
a14ed312 | 637 | static char *read_attribute (struct attribute *, struct attr_abbrev *, |
e7c27a73 | 638 | bfd *, char *, struct dwarf2_cu *); |
c906108c | 639 | |
a8329558 | 640 | static char *read_attribute_value (struct attribute *, unsigned, |
e7c27a73 | 641 | bfd *, char *, struct dwarf2_cu *); |
a8329558 | 642 | |
a14ed312 | 643 | static unsigned int read_1_byte (bfd *, char *); |
c906108c | 644 | |
a14ed312 | 645 | static int read_1_signed_byte (bfd *, char *); |
c906108c | 646 | |
a14ed312 | 647 | static unsigned int read_2_bytes (bfd *, char *); |
c906108c | 648 | |
a14ed312 | 649 | static unsigned int read_4_bytes (bfd *, char *); |
c906108c | 650 | |
ce5d95e1 | 651 | static unsigned long read_8_bytes (bfd *, char *); |
c906108c | 652 | |
e7c27a73 | 653 | static CORE_ADDR read_address (bfd *, char *ptr, struct dwarf2_cu *, |
107d2387 | 654 | int *bytes_read); |
c906108c | 655 | |
613e1657 KB |
656 | static LONGEST read_initial_length (bfd *, char *, |
657 | struct comp_unit_head *, int *bytes_read); | |
658 | ||
659 | static LONGEST read_offset (bfd *, char *, const struct comp_unit_head *, | |
660 | int *bytes_read); | |
661 | ||
a14ed312 | 662 | static char *read_n_bytes (bfd *, char *, unsigned int); |
c906108c | 663 | |
a14ed312 | 664 | static char *read_string (bfd *, char *, unsigned int *); |
c906108c | 665 | |
4bdf3d34 JJ |
666 | static char *read_indirect_string (bfd *, char *, const struct comp_unit_head *, |
667 | unsigned int *); | |
668 | ||
ce5d95e1 | 669 | static unsigned long read_unsigned_leb128 (bfd *, char *, unsigned int *); |
c906108c | 670 | |
ce5d95e1 | 671 | static long read_signed_leb128 (bfd *, char *, unsigned int *); |
c906108c | 672 | |
4bb7a0a7 DJ |
673 | static char *skip_leb128 (bfd *, char *); |
674 | ||
e142c38c | 675 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 676 | |
e142c38c DJ |
677 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
678 | struct dwarf2_cu *); | |
c906108c | 679 | |
fdc860a3 JB |
680 | static int dwarf2_attribute_true_p (struct die_info *die, unsigned name, |
681 | struct dwarf2_cu *cu); | |
682 | ||
e142c38c | 683 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 684 | |
e142c38c DJ |
685 | static struct die_info *die_specification (struct die_info *die, |
686 | struct dwarf2_cu *); | |
63d06c5c | 687 | |
debd256d JB |
688 | static void free_line_header (struct line_header *lh); |
689 | ||
690 | static struct line_header *(dwarf_decode_line_header | |
691 | (unsigned int offset, | |
e7c27a73 | 692 | bfd *abfd, struct dwarf2_cu *cu)); |
debd256d JB |
693 | |
694 | static void dwarf_decode_lines (struct line_header *, char *, bfd *, | |
e7c27a73 | 695 | struct dwarf2_cu *); |
c906108c | 696 | |
a14ed312 | 697 | static void dwarf2_start_subfile (char *, char *); |
c906108c | 698 | |
a14ed312 | 699 | static struct symbol *new_symbol (struct die_info *, struct type *, |
e7c27a73 | 700 | struct dwarf2_cu *); |
c906108c | 701 | |
a14ed312 | 702 | static void dwarf2_const_value (struct attribute *, struct symbol *, |
e7c27a73 | 703 | struct dwarf2_cu *); |
c906108c | 704 | |
2df3850c JM |
705 | static void dwarf2_const_value_data (struct attribute *attr, |
706 | struct symbol *sym, | |
707 | int bits); | |
708 | ||
e7c27a73 | 709 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 710 | |
e7c27a73 DJ |
711 | static struct type *die_containing_type (struct die_info *, |
712 | struct dwarf2_cu *); | |
c906108c SS |
713 | |
714 | #if 0 | |
a14ed312 | 715 | static struct type *type_at_offset (unsigned int, struct objfile *); |
c906108c SS |
716 | #endif |
717 | ||
e7c27a73 | 718 | static struct type *tag_type_to_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 719 | |
e7c27a73 | 720 | static void read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 721 | |
086ed43d | 722 | static char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c DC |
723 | |
724 | static char *typename_concat (const char *prefix, const char *suffix); | |
725 | ||
e7c27a73 | 726 | static void read_typedef (struct die_info *, struct dwarf2_cu *); |
c906108c | 727 | |
e7c27a73 | 728 | static void read_base_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 729 | |
a02abb62 JB |
730 | static void read_subrange_type (struct die_info *die, struct dwarf2_cu *cu); |
731 | ||
e7c27a73 | 732 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 733 | |
e7c27a73 | 734 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 735 | |
e7c27a73 | 736 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 737 | |
a14ed312 | 738 | static int dwarf2_get_pc_bounds (struct die_info *, |
e7c27a73 | 739 | CORE_ADDR *, CORE_ADDR *, struct dwarf2_cu *); |
c906108c | 740 | |
fae299cd DC |
741 | static void get_scope_pc_bounds (struct die_info *, |
742 | CORE_ADDR *, CORE_ADDR *, | |
743 | struct dwarf2_cu *); | |
744 | ||
a14ed312 | 745 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 746 | struct dwarf2_cu *); |
c906108c | 747 | |
a14ed312 | 748 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 749 | struct type *, struct dwarf2_cu *); |
c906108c | 750 | |
a14ed312 | 751 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 752 | struct die_info *, struct type *, |
e7c27a73 | 753 | struct dwarf2_cu *); |
c906108c | 754 | |
a14ed312 | 755 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
e7c27a73 | 756 | struct type *, struct dwarf2_cu *); |
c906108c | 757 | |
134d01f1 DJ |
758 | static void read_structure_type (struct die_info *, struct dwarf2_cu *); |
759 | ||
760 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 761 | |
8176b9b8 DC |
762 | static char *determine_class_name (struct die_info *die, struct dwarf2_cu *cu); |
763 | ||
e7c27a73 | 764 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 765 | |
e7c27a73 | 766 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 767 | |
38d518c9 | 768 | static const char *namespace_name (struct die_info *die, |
e142c38c | 769 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 770 | |
134d01f1 DJ |
771 | static void read_enumeration_type (struct die_info *, struct dwarf2_cu *); |
772 | ||
773 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); | |
c906108c | 774 | |
e7c27a73 | 775 | static struct type *dwarf_base_type (int, int, struct dwarf2_cu *); |
c906108c | 776 | |
e7c27a73 | 777 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 778 | |
e7c27a73 | 779 | static void read_array_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 780 | |
e7c27a73 | 781 | static void read_tag_pointer_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 782 | |
e7c27a73 DJ |
783 | static void read_tag_ptr_to_member_type (struct die_info *, |
784 | struct dwarf2_cu *); | |
c906108c | 785 | |
e7c27a73 | 786 | static void read_tag_reference_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 787 | |
e7c27a73 | 788 | static void read_tag_const_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 789 | |
e7c27a73 | 790 | static void read_tag_volatile_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 791 | |
e7c27a73 | 792 | static void read_tag_string_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 793 | |
e7c27a73 | 794 | static void read_subroutine_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 795 | |
e7c27a73 | 796 | static struct die_info *read_comp_unit (char *, bfd *, struct dwarf2_cu *); |
c906108c | 797 | |
639d11d3 | 798 | static struct die_info *read_die_and_children (char *info_ptr, bfd *abfd, |
e7c27a73 | 799 | struct dwarf2_cu *, |
639d11d3 DC |
800 | char **new_info_ptr, |
801 | struct die_info *parent); | |
802 | ||
803 | static struct die_info *read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 804 | struct dwarf2_cu *, |
639d11d3 DC |
805 | char **new_info_ptr, |
806 | struct die_info *parent); | |
807 | ||
a14ed312 | 808 | static void free_die_list (struct die_info *); |
c906108c | 809 | |
74b7792f AC |
810 | static struct cleanup *make_cleanup_free_die_list (struct die_info *); |
811 | ||
e7c27a73 | 812 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 813 | |
e142c38c | 814 | static char *dwarf2_linkage_name (struct die_info *, struct dwarf2_cu *); |
c906108c | 815 | |
e142c38c | 816 | static char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 817 | |
e142c38c DJ |
818 | static struct die_info *dwarf2_extension (struct die_info *die, |
819 | struct dwarf2_cu *); | |
9219021c | 820 | |
a14ed312 | 821 | static char *dwarf_tag_name (unsigned int); |
c906108c | 822 | |
a14ed312 | 823 | static char *dwarf_attr_name (unsigned int); |
c906108c | 824 | |
a14ed312 | 825 | static char *dwarf_form_name (unsigned int); |
c906108c | 826 | |
a14ed312 | 827 | static char *dwarf_stack_op_name (unsigned int); |
c906108c | 828 | |
a14ed312 | 829 | static char *dwarf_bool_name (unsigned int); |
c906108c | 830 | |
a14ed312 | 831 | static char *dwarf_type_encoding_name (unsigned int); |
c906108c SS |
832 | |
833 | #if 0 | |
a14ed312 | 834 | static char *dwarf_cfi_name (unsigned int); |
c906108c | 835 | |
a14ed312 | 836 | struct die_info *copy_die (struct die_info *); |
c906108c SS |
837 | #endif |
838 | ||
f9aca02d | 839 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 840 | |
f9aca02d | 841 | static void dump_die (struct die_info *); |
c906108c | 842 | |
f9aca02d | 843 | static void dump_die_list (struct die_info *); |
c906108c | 844 | |
f9aca02d | 845 | static void store_in_ref_table (unsigned int, struct die_info *); |
c906108c | 846 | |
7f0e3f52 | 847 | static void dwarf2_empty_hash_tables (void); |
c906108c | 848 | |
e142c38c DJ |
849 | static unsigned int dwarf2_get_ref_die_offset (struct attribute *, |
850 | struct dwarf2_cu *); | |
c906108c | 851 | |
a02abb62 JB |
852 | static int dwarf2_get_attr_constant_value (struct attribute *, int); |
853 | ||
f9aca02d | 854 | static struct die_info *follow_die_ref (unsigned int); |
c906108c | 855 | |
e142c38c DJ |
856 | static struct type *dwarf2_fundamental_type (struct objfile *, int, |
857 | struct dwarf2_cu *); | |
c906108c SS |
858 | |
859 | /* memory allocation interface */ | |
860 | ||
4efb68b1 | 861 | static void dwarf2_free_tmp_obstack (void *); |
c906108c | 862 | |
a14ed312 | 863 | static struct dwarf_block *dwarf_alloc_block (void); |
c906108c | 864 | |
f3dd6933 | 865 | static struct abbrev_info *dwarf_alloc_abbrev (struct dwarf2_cu *); |
c906108c | 866 | |
a14ed312 | 867 | static struct die_info *dwarf_alloc_die (void); |
c906108c | 868 | |
e142c38c | 869 | static void initialize_cu_func_list (struct dwarf2_cu *); |
5fb290d7 | 870 | |
e142c38c DJ |
871 | static void add_to_cu_func_list (const char *, CORE_ADDR, CORE_ADDR, |
872 | struct dwarf2_cu *); | |
5fb290d7 | 873 | |
2e276125 | 874 | static void dwarf_decode_macros (struct line_header *, unsigned int, |
e7c27a73 | 875 | char *, bfd *, struct dwarf2_cu *); |
2e276125 | 876 | |
8e19ed76 PS |
877 | static int attr_form_is_block (struct attribute *); |
878 | ||
4c2df51b DJ |
879 | static void |
880 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 881 | struct dwarf2_cu *cu); |
4c2df51b | 882 | |
4bb7a0a7 DJ |
883 | static char *skip_one_die (char *info_ptr, struct abbrev_info *abbrev, |
884 | struct dwarf2_cu *cu); | |
885 | ||
c906108c SS |
886 | /* Try to locate the sections we need for DWARF 2 debugging |
887 | information and return true if we have enough to do something. */ | |
888 | ||
889 | int | |
6502dd73 | 890 | dwarf2_has_info (struct objfile *objfile) |
c906108c | 891 | { |
6502dd73 DJ |
892 | struct dwarf2_per_objfile *data; |
893 | ||
894 | /* Initialize per-objfile state. */ | |
895 | data = obstack_alloc (&objfile->objfile_obstack, sizeof (*data)); | |
896 | memset (data, 0, sizeof (*data)); | |
897 | set_objfile_data (objfile, dwarf2_objfile_data_key, data); | |
898 | dwarf2_per_objfile = data; | |
899 | ||
188dd5d6 DJ |
900 | dwarf_info_section = 0; |
901 | dwarf_abbrev_section = 0; | |
902 | dwarf_line_section = 0; | |
903 | dwarf_str_section = 0; | |
904 | dwarf_macinfo_section = 0; | |
905 | dwarf_frame_section = 0; | |
906 | dwarf_eh_frame_section = 0; | |
907 | dwarf_ranges_section = 0; | |
908 | dwarf_loc_section = 0; | |
af34e669 | 909 | |
6502dd73 | 910 | bfd_map_over_sections (objfile->obfd, dwarf2_locate_sections, NULL); |
188dd5d6 | 911 | return (dwarf_info_section != NULL && dwarf_abbrev_section != NULL); |
c906108c SS |
912 | } |
913 | ||
914 | /* This function is mapped across the sections and remembers the | |
915 | offset and size of each of the debugging sections we are interested | |
916 | in. */ | |
917 | ||
918 | static void | |
4efb68b1 | 919 | dwarf2_locate_sections (bfd *ignore_abfd, asection *sectp, void *ignore_ptr) |
c906108c | 920 | { |
6314a349 | 921 | if (strcmp (sectp->name, INFO_SECTION) == 0) |
c906108c | 922 | { |
6502dd73 | 923 | dwarf2_per_objfile->info_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 924 | dwarf_info_section = sectp; |
c906108c | 925 | } |
6314a349 | 926 | else if (strcmp (sectp->name, ABBREV_SECTION) == 0) |
c906108c | 927 | { |
6502dd73 | 928 | dwarf2_per_objfile->abbrev_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 929 | dwarf_abbrev_section = sectp; |
c906108c | 930 | } |
6314a349 | 931 | else if (strcmp (sectp->name, LINE_SECTION) == 0) |
c906108c | 932 | { |
6502dd73 | 933 | dwarf2_per_objfile->line_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 934 | dwarf_line_section = sectp; |
c906108c | 935 | } |
6314a349 | 936 | else if (strcmp (sectp->name, PUBNAMES_SECTION) == 0) |
c906108c | 937 | { |
6502dd73 | 938 | dwarf2_per_objfile->pubnames_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 939 | dwarf_pubnames_section = sectp; |
c906108c | 940 | } |
6314a349 | 941 | else if (strcmp (sectp->name, ARANGES_SECTION) == 0) |
c906108c | 942 | { |
6502dd73 | 943 | dwarf2_per_objfile->aranges_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 944 | dwarf_aranges_section = sectp; |
c906108c | 945 | } |
6314a349 | 946 | else if (strcmp (sectp->name, LOC_SECTION) == 0) |
c906108c | 947 | { |
6502dd73 | 948 | dwarf2_per_objfile->loc_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 949 | dwarf_loc_section = sectp; |
c906108c | 950 | } |
6314a349 | 951 | else if (strcmp (sectp->name, MACINFO_SECTION) == 0) |
c906108c | 952 | { |
6502dd73 | 953 | dwarf2_per_objfile->macinfo_size = bfd_get_section_size_before_reloc (sectp); |
0cf824c9 | 954 | dwarf_macinfo_section = sectp; |
c906108c | 955 | } |
6314a349 | 956 | else if (strcmp (sectp->name, STR_SECTION) == 0) |
c906108c | 957 | { |
6502dd73 | 958 | dwarf2_per_objfile->str_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 959 | dwarf_str_section = sectp; |
c906108c | 960 | } |
6314a349 | 961 | else if (strcmp (sectp->name, FRAME_SECTION) == 0) |
b6af0555 | 962 | { |
6502dd73 | 963 | dwarf2_per_objfile->frame_size = bfd_get_section_size_before_reloc (sectp); |
086df311 | 964 | dwarf_frame_section = sectp; |
b6af0555 | 965 | } |
6314a349 | 966 | else if (strcmp (sectp->name, EH_FRAME_SECTION) == 0) |
b6af0555 | 967 | { |
3799ccc6 EZ |
968 | flagword aflag = bfd_get_section_flags (ignore_abfd, sectp); |
969 | if (aflag & SEC_HAS_CONTENTS) | |
970 | { | |
6502dd73 | 971 | dwarf2_per_objfile->eh_frame_size = bfd_get_section_size_before_reloc (sectp); |
3799ccc6 EZ |
972 | dwarf_eh_frame_section = sectp; |
973 | } | |
b6af0555 | 974 | } |
6314a349 | 975 | else if (strcmp (sectp->name, RANGES_SECTION) == 0) |
af34e669 | 976 | { |
6502dd73 | 977 | dwarf2_per_objfile->ranges_size = bfd_get_section_size_before_reloc (sectp); |
6f10aeb1 | 978 | dwarf_ranges_section = sectp; |
af34e669 | 979 | } |
c906108c SS |
980 | } |
981 | ||
982 | /* Build a partial symbol table. */ | |
983 | ||
984 | void | |
fba45db2 | 985 | dwarf2_build_psymtabs (struct objfile *objfile, int mainline) |
c906108c | 986 | { |
c906108c SS |
987 | /* We definitely need the .debug_info and .debug_abbrev sections */ |
988 | ||
6502dd73 DJ |
989 | dwarf2_per_objfile->info_buffer = dwarf2_read_section (objfile, dwarf_info_section); |
990 | dwarf2_per_objfile->abbrev_buffer = dwarf2_read_section (objfile, dwarf_abbrev_section); | |
188dd5d6 DJ |
991 | |
992 | if (dwarf_line_section) | |
6502dd73 | 993 | dwarf2_per_objfile->line_buffer = dwarf2_read_section (objfile, dwarf_line_section); |
41ff2da1 | 994 | else |
6502dd73 | 995 | dwarf2_per_objfile->line_buffer = NULL; |
c906108c | 996 | |
188dd5d6 | 997 | if (dwarf_str_section) |
6502dd73 | 998 | dwarf2_per_objfile->str_buffer = dwarf2_read_section (objfile, dwarf_str_section); |
4bdf3d34 | 999 | else |
6502dd73 | 1000 | dwarf2_per_objfile->str_buffer = NULL; |
4bdf3d34 | 1001 | |
188dd5d6 | 1002 | if (dwarf_macinfo_section) |
6502dd73 | 1003 | dwarf2_per_objfile->macinfo_buffer = dwarf2_read_section (objfile, |
086df311 | 1004 | dwarf_macinfo_section); |
2e276125 | 1005 | else |
6502dd73 | 1006 | dwarf2_per_objfile->macinfo_buffer = NULL; |
2e276125 | 1007 | |
188dd5d6 | 1008 | if (dwarf_ranges_section) |
6502dd73 | 1009 | dwarf2_per_objfile->ranges_buffer = dwarf2_read_section (objfile, dwarf_ranges_section); |
af34e669 | 1010 | else |
6502dd73 | 1011 | dwarf2_per_objfile->ranges_buffer = NULL; |
af34e669 | 1012 | |
188dd5d6 | 1013 | if (dwarf_loc_section) |
6502dd73 | 1014 | dwarf2_per_objfile->loc_buffer = dwarf2_read_section (objfile, dwarf_loc_section); |
0d53c4c4 | 1015 | else |
6502dd73 | 1016 | dwarf2_per_objfile->loc_buffer = NULL; |
0d53c4c4 | 1017 | |
ef96bde8 EZ |
1018 | if (mainline |
1019 | || (objfile->global_psymbols.size == 0 | |
1020 | && objfile->static_psymbols.size == 0)) | |
c906108c SS |
1021 | { |
1022 | init_psymbol_list (objfile, 1024); | |
1023 | } | |
1024 | ||
1025 | #if 0 | |
1026 | if (dwarf_aranges_offset && dwarf_pubnames_offset) | |
1027 | { | |
d4f3574e | 1028 | /* Things are significantly easier if we have .debug_aranges and |
c906108c SS |
1029 | .debug_pubnames sections */ |
1030 | ||
d4f3574e | 1031 | dwarf2_build_psymtabs_easy (objfile, mainline); |
c906108c SS |
1032 | } |
1033 | else | |
1034 | #endif | |
1035 | /* only test this case for now */ | |
c5aa993b | 1036 | { |
c906108c | 1037 | /* In this case we have to work a bit harder */ |
d4f3574e | 1038 | dwarf2_build_psymtabs_hard (objfile, mainline); |
c906108c SS |
1039 | } |
1040 | } | |
1041 | ||
1042 | #if 0 | |
1043 | /* Build the partial symbol table from the information in the | |
1044 | .debug_pubnames and .debug_aranges sections. */ | |
1045 | ||
1046 | static void | |
fba45db2 | 1047 | dwarf2_build_psymtabs_easy (struct objfile *objfile, int mainline) |
c906108c SS |
1048 | { |
1049 | bfd *abfd = objfile->obfd; | |
1050 | char *aranges_buffer, *pubnames_buffer; | |
1051 | char *aranges_ptr, *pubnames_ptr; | |
1052 | unsigned int entry_length, version, info_offset, info_size; | |
1053 | ||
1054 | pubnames_buffer = dwarf2_read_section (objfile, | |
086df311 | 1055 | dwarf_pubnames_section); |
c906108c | 1056 | pubnames_ptr = pubnames_buffer; |
6502dd73 | 1057 | while ((pubnames_ptr - pubnames_buffer) < dwarf2_per_objfile->pubnames_size) |
c906108c | 1058 | { |
613e1657 KB |
1059 | struct comp_unit_head cu_header; |
1060 | int bytes_read; | |
1061 | ||
1062 | entry_length = read_initial_length (abfd, pubnames_ptr, &cu_header, | |
1063 | &bytes_read); | |
1064 | pubnames_ptr += bytes_read; | |
c906108c SS |
1065 | version = read_1_byte (abfd, pubnames_ptr); |
1066 | pubnames_ptr += 1; | |
1067 | info_offset = read_4_bytes (abfd, pubnames_ptr); | |
1068 | pubnames_ptr += 4; | |
1069 | info_size = read_4_bytes (abfd, pubnames_ptr); | |
1070 | pubnames_ptr += 4; | |
1071 | } | |
1072 | ||
1073 | aranges_buffer = dwarf2_read_section (objfile, | |
086df311 | 1074 | dwarf_aranges_section); |
c906108c SS |
1075 | |
1076 | } | |
1077 | #endif | |
1078 | ||
107d2387 AC |
1079 | /* Read in the comp unit header information from the debug_info at |
1080 | info_ptr. */ | |
1081 | ||
1082 | static char * | |
1083 | read_comp_unit_head (struct comp_unit_head *cu_header, | |
1084 | char *info_ptr, bfd *abfd) | |
1085 | { | |
1086 | int signed_addr; | |
613e1657 KB |
1087 | int bytes_read; |
1088 | cu_header->length = read_initial_length (abfd, info_ptr, cu_header, | |
1089 | &bytes_read); | |
1090 | info_ptr += bytes_read; | |
107d2387 AC |
1091 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1092 | info_ptr += 2; | |
613e1657 KB |
1093 | cu_header->abbrev_offset = read_offset (abfd, info_ptr, cu_header, |
1094 | &bytes_read); | |
1095 | info_ptr += bytes_read; | |
107d2387 AC |
1096 | cu_header->addr_size = read_1_byte (abfd, info_ptr); |
1097 | info_ptr += 1; | |
1098 | signed_addr = bfd_get_sign_extend_vma (abfd); | |
1099 | if (signed_addr < 0) | |
8e65ff28 AC |
1100 | internal_error (__FILE__, __LINE__, |
1101 | "read_comp_unit_head: dwarf from non elf file"); | |
107d2387 AC |
1102 | cu_header->signed_addr_p = signed_addr; |
1103 | return info_ptr; | |
1104 | } | |
1105 | ||
c906108c SS |
1106 | /* Build the partial symbol table by doing a quick pass through the |
1107 | .debug_info and .debug_abbrev sections. */ | |
1108 | ||
1109 | static void | |
fba45db2 | 1110 | dwarf2_build_psymtabs_hard (struct objfile *objfile, int mainline) |
c906108c SS |
1111 | { |
1112 | /* Instead of reading this into a big buffer, we should probably use | |
1113 | mmap() on architectures that support it. (FIXME) */ | |
1114 | bfd *abfd = objfile->obfd; | |
1115 | char *info_ptr, *abbrev_ptr; | |
1116 | char *beg_of_comp_unit; | |
c906108c SS |
1117 | struct partial_die_info comp_unit_die; |
1118 | struct partial_symtab *pst; | |
1119 | struct cleanup *back_to; | |
e142c38c | 1120 | CORE_ADDR lowpc, highpc, baseaddr; |
c906108c | 1121 | |
6502dd73 DJ |
1122 | info_ptr = dwarf2_per_objfile->info_buffer; |
1123 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer; | |
c906108c | 1124 | |
9e84cbde JB |
1125 | /* We use dwarf2_tmp_obstack for objects that don't need to survive |
1126 | the partial symbol scan, like attribute values. | |
1127 | ||
1128 | We could reduce our peak memory consumption during partial symbol | |
1129 | table construction by freeing stuff from this obstack more often | |
1130 | --- say, after processing each compilation unit, or each die --- | |
1131 | but it turns out that this saves almost nothing. For an | |
1132 | executable with 11Mb of Dwarf 2 data, I found about 64k allocated | |
1133 | on dwarf2_tmp_obstack. Some investigation showed: | |
1134 | ||
1135 | 1) 69% of the attributes used forms DW_FORM_addr, DW_FORM_data*, | |
1136 | DW_FORM_flag, DW_FORM_[su]data, and DW_FORM_ref*. These are | |
1137 | all fixed-length values not requiring dynamic allocation. | |
1138 | ||
1139 | 2) 30% of the attributes used the form DW_FORM_string. For | |
1140 | DW_FORM_string, read_attribute simply hands back a pointer to | |
6502dd73 | 1141 | the null-terminated string in info_buffer, so no dynamic |
9e84cbde JB |
1142 | allocation is needed there either. |
1143 | ||
1144 | 3) The remaining 1% of the attributes all used DW_FORM_block1. | |
1145 | 75% of those were DW_AT_frame_base location lists for | |
1146 | functions; the rest were DW_AT_location attributes, probably | |
1147 | for the global variables. | |
1148 | ||
1149 | Anyway, what this all means is that the memory the dwarf2 | |
1150 | reader uses as temporary space reading partial symbols is about | |
1151 | 0.5% as much as we use for dwarf_*_buffer. That's noise. */ | |
1152 | ||
c906108c SS |
1153 | obstack_init (&dwarf2_tmp_obstack); |
1154 | back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL); | |
1155 | ||
6502dd73 | 1156 | /* Since the objects we're extracting from .debug_info vary in |
af703f96 JB |
1157 | length, only the individual functions to extract them (like |
1158 | read_comp_unit_head and read_partial_die) can really know whether | |
1159 | the buffer is large enough to hold another complete object. | |
1160 | ||
6502dd73 DJ |
1161 | At the moment, they don't actually check that. If .debug_info |
1162 | holds just one extra byte after the last compilation unit's dies, | |
1163 | then read_comp_unit_head will happily read off the end of the | |
1164 | buffer. read_partial_die is similarly casual. Those functions | |
1165 | should be fixed. | |
af703f96 JB |
1166 | |
1167 | For this loop condition, simply checking whether there's any data | |
1168 | left at all should be sufficient. */ | |
6502dd73 DJ |
1169 | while (info_ptr < (dwarf2_per_objfile->info_buffer |
1170 | + dwarf2_per_objfile->info_size)) | |
c906108c | 1171 | { |
f3dd6933 | 1172 | struct cleanup *back_to_inner; |
e7c27a73 | 1173 | struct dwarf2_cu cu; |
c906108c | 1174 | beg_of_comp_unit = info_ptr; |
c906108c | 1175 | |
e7c27a73 DJ |
1176 | cu.objfile = objfile; |
1177 | info_ptr = read_comp_unit_head (&cu.header, info_ptr, abfd); | |
1178 | ||
1179 | if (cu.header.version != 2) | |
c906108c | 1180 | { |
e7c27a73 | 1181 | error ("Dwarf Error: wrong version in compilation unit header (is %d, should be %d) [in module %s]", cu.header.version, 2, bfd_get_filename (abfd)); |
c906108c SS |
1182 | return; |
1183 | } | |
6502dd73 | 1184 | if (cu.header.abbrev_offset >= dwarf2_per_objfile->abbrev_size) |
c906108c | 1185 | { |
659b0389 | 1186 | error ("Dwarf Error: bad offset (0x%lx) in compilation unit header (offset 0x%lx + 6) [in module %s]", |
e7c27a73 | 1187 | (long) cu.header.abbrev_offset, |
6502dd73 | 1188 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), |
659b0389 | 1189 | bfd_get_filename (abfd)); |
c906108c SS |
1190 | return; |
1191 | } | |
e7c27a73 | 1192 | if (beg_of_comp_unit + cu.header.length + cu.header.initial_length_size |
6502dd73 | 1193 | > dwarf2_per_objfile->info_buffer + dwarf2_per_objfile->info_size) |
c906108c | 1194 | { |
659b0389 | 1195 | error ("Dwarf Error: bad length (0x%lx) in compilation unit header (offset 0x%lx + 0) [in module %s]", |
e7c27a73 | 1196 | (long) cu.header.length, |
6502dd73 | 1197 | (long) (beg_of_comp_unit - dwarf2_per_objfile->info_buffer), |
659b0389 | 1198 | bfd_get_filename (abfd)); |
c906108c SS |
1199 | return; |
1200 | } | |
57349743 | 1201 | /* Complete the cu_header */ |
6502dd73 | 1202 | cu.header.offset = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
e7c27a73 DJ |
1203 | cu.header.first_die_ptr = info_ptr; |
1204 | cu.header.cu_head_ptr = beg_of_comp_unit; | |
57349743 | 1205 | |
e142c38c DJ |
1206 | cu.list_in_scope = &file_symbols; |
1207 | ||
c906108c | 1208 | /* Read the abbrevs for this compilation unit into a table */ |
e7c27a73 | 1209 | dwarf2_read_abbrevs (abfd, &cu); |
f3dd6933 | 1210 | back_to_inner = make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c SS |
1211 | |
1212 | /* Read the compilation unit die */ | |
107d2387 | 1213 | info_ptr = read_partial_die (&comp_unit_die, abfd, info_ptr, |
e7c27a73 | 1214 | &cu); |
c906108c SS |
1215 | |
1216 | /* Set the language we're debugging */ | |
e142c38c | 1217 | set_cu_language (comp_unit_die.language, &cu); |
c906108c SS |
1218 | |
1219 | /* Allocate a new partial symbol table structure */ | |
d4f3574e | 1220 | pst = start_psymtab_common (objfile, objfile->section_offsets, |
96baa820 | 1221 | comp_unit_die.name ? comp_unit_die.name : "", |
c906108c SS |
1222 | comp_unit_die.lowpc, |
1223 | objfile->global_psymbols.next, | |
1224 | objfile->static_psymbols.next); | |
1225 | ||
1226 | pst->read_symtab_private = (char *) | |
8b92e4d5 | 1227 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct dwarf2_pinfo)); |
6502dd73 | 1228 | DWARF_INFO_OFFSET (pst) = beg_of_comp_unit - dwarf2_per_objfile->info_buffer; |
613e1657 | 1229 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1230 | |
1231 | /* Store the function that reads in the rest of the symbol table */ | |
1232 | pst->read_symtab = dwarf2_psymtab_to_symtab; | |
1233 | ||
1234 | /* Check if comp unit has_children. | |
1235 | If so, read the rest of the partial symbols from this comp unit. | |
1236 | If not, there's no more debug_info for this comp unit. */ | |
1237 | if (comp_unit_die.has_children) | |
1238 | { | |
91c24f0a DC |
1239 | lowpc = ((CORE_ADDR) -1); |
1240 | highpc = ((CORE_ADDR) 0); | |
1241 | ||
e7c27a73 DJ |
1242 | info_ptr = scan_partial_symbols (info_ptr, &lowpc, &highpc, |
1243 | &cu, NULL); | |
c906108c | 1244 | |
91c24f0a DC |
1245 | /* If we didn't find a lowpc, set it to highpc to avoid |
1246 | complaints from `maint check'. */ | |
1247 | if (lowpc == ((CORE_ADDR) -1)) | |
1248 | lowpc = highpc; | |
1249 | ||
c906108c SS |
1250 | /* If the compilation unit didn't have an explicit address range, |
1251 | then use the information extracted from its child dies. */ | |
0b010bcc | 1252 | if (! comp_unit_die.has_pc_info) |
c906108c | 1253 | { |
c5aa993b | 1254 | comp_unit_die.lowpc = lowpc; |
c906108c SS |
1255 | comp_unit_die.highpc = highpc; |
1256 | } | |
1257 | } | |
c5aa993b | 1258 | pst->textlow = comp_unit_die.lowpc + baseaddr; |
c906108c SS |
1259 | pst->texthigh = comp_unit_die.highpc + baseaddr; |
1260 | ||
1261 | pst->n_global_syms = objfile->global_psymbols.next - | |
1262 | (objfile->global_psymbols.list + pst->globals_offset); | |
1263 | pst->n_static_syms = objfile->static_psymbols.next - | |
1264 | (objfile->static_psymbols.list + pst->statics_offset); | |
1265 | sort_pst_symbols (pst); | |
1266 | ||
1267 | /* If there is already a psymtab or symtab for a file of this | |
1268 | name, remove it. (If there is a symtab, more drastic things | |
1269 | also happen.) This happens in VxWorks. */ | |
1270 | free_named_symtabs (pst->filename); | |
1271 | ||
e7c27a73 DJ |
1272 | info_ptr = beg_of_comp_unit + cu.header.length |
1273 | + cu.header.initial_length_size; | |
f3dd6933 DJ |
1274 | |
1275 | do_cleanups (back_to_inner); | |
c906108c SS |
1276 | } |
1277 | do_cleanups (back_to); | |
1278 | } | |
1279 | ||
91c24f0a | 1280 | /* Read in all interesting dies to the end of the compilation unit or |
5c4e30ca DC |
1281 | to the end of the current namespace. NAMESPACE is NULL if we |
1282 | haven't yet encountered any DW_TAG_namespace entries; otherwise, | |
1283 | it's the name of the current namespace. In particular, it's the | |
1284 | empty string if we're currently in the global namespace but have | |
1285 | previously encountered a DW_TAG_namespace. */ | |
c906108c SS |
1286 | |
1287 | static char * | |
e7c27a73 DJ |
1288 | scan_partial_symbols (char *info_ptr, CORE_ADDR *lowpc, |
1289 | CORE_ADDR *highpc, struct dwarf2_cu *cu, | |
5c4e30ca | 1290 | const char *namespace) |
c906108c | 1291 | { |
e7c27a73 | 1292 | struct objfile *objfile = cu->objfile; |
c906108c SS |
1293 | bfd *abfd = objfile->obfd; |
1294 | struct partial_die_info pdi; | |
1295 | ||
91c24f0a DC |
1296 | /* Now, march along the PDI's, descending into ones which have |
1297 | interesting children but skipping the children of the other ones, | |
1298 | until we reach the end of the compilation unit. */ | |
c906108c | 1299 | |
91c24f0a | 1300 | while (1) |
c906108c | 1301 | { |
91c24f0a DC |
1302 | /* This flag tells whether or not info_ptr has gotten updated |
1303 | inside the loop. */ | |
1304 | int info_ptr_updated = 0; | |
1305 | ||
e7c27a73 | 1306 | info_ptr = read_partial_die (&pdi, abfd, info_ptr, cu); |
c906108c | 1307 | |
91c24f0a DC |
1308 | /* Anonymous namespaces have no name but have interesting |
1309 | children, so we need to look at them. Ditto for anonymous | |
1310 | enums. */ | |
933c6fe4 | 1311 | |
91c24f0a DC |
1312 | if (pdi.name != NULL || pdi.tag == DW_TAG_namespace |
1313 | || pdi.tag == DW_TAG_enumeration_type) | |
c906108c SS |
1314 | { |
1315 | switch (pdi.tag) | |
1316 | { | |
1317 | case DW_TAG_subprogram: | |
0b010bcc | 1318 | if (pdi.has_pc_info) |
c906108c SS |
1319 | { |
1320 | if (pdi.lowpc < *lowpc) | |
1321 | { | |
1322 | *lowpc = pdi.lowpc; | |
1323 | } | |
1324 | if (pdi.highpc > *highpc) | |
1325 | { | |
1326 | *highpc = pdi.highpc; | |
1327 | } | |
91c24f0a | 1328 | if (!pdi.is_declaration) |
c906108c | 1329 | { |
e7c27a73 | 1330 | add_partial_symbol (&pdi, cu, namespace); |
c906108c SS |
1331 | } |
1332 | } | |
1333 | break; | |
1334 | case DW_TAG_variable: | |
1335 | case DW_TAG_typedef: | |
91c24f0a | 1336 | case DW_TAG_union_type: |
63d06c5c DC |
1337 | if (!pdi.is_declaration) |
1338 | { | |
1339 | add_partial_symbol (&pdi, cu, namespace); | |
1340 | } | |
1341 | break; | |
c906108c SS |
1342 | case DW_TAG_class_type: |
1343 | case DW_TAG_structure_type: | |
91c24f0a | 1344 | if (!pdi.is_declaration) |
c906108c | 1345 | { |
63d06c5c DC |
1346 | info_ptr = add_partial_structure (&pdi, info_ptr, cu, |
1347 | namespace); | |
1348 | info_ptr_updated = 1; | |
c906108c SS |
1349 | } |
1350 | break; | |
91c24f0a DC |
1351 | case DW_TAG_enumeration_type: |
1352 | if (!pdi.is_declaration) | |
1353 | { | |
e7c27a73 | 1354 | info_ptr = add_partial_enumeration (&pdi, info_ptr, cu, |
5c4e30ca | 1355 | namespace); |
91c24f0a DC |
1356 | info_ptr_updated = 1; |
1357 | } | |
c906108c SS |
1358 | break; |
1359 | case DW_TAG_base_type: | |
a02abb62 | 1360 | case DW_TAG_subrange_type: |
c906108c | 1361 | /* File scope base type definitions are added to the partial |
c5aa993b | 1362 | symbol table. */ |
e7c27a73 | 1363 | add_partial_symbol (&pdi, cu, namespace); |
c906108c | 1364 | break; |
d9fa45fe | 1365 | case DW_TAG_namespace: |
5c4e30ca DC |
1366 | /* We've hit a DW_TAG_namespace entry, so we know this |
1367 | file has been compiled using a compiler that | |
1368 | generates them; update NAMESPACE to reflect that. */ | |
1369 | if (namespace == NULL) | |
1370 | namespace = ""; | |
e7c27a73 DJ |
1371 | info_ptr = add_partial_namespace (&pdi, info_ptr, lowpc, highpc, |
1372 | cu, namespace); | |
91c24f0a DC |
1373 | info_ptr_updated = 1; |
1374 | break; | |
c906108c SS |
1375 | default: |
1376 | break; | |
1377 | } | |
1378 | } | |
1379 | ||
c906108c | 1380 | if (pdi.tag == 0) |
91c24f0a DC |
1381 | break; |
1382 | ||
1383 | /* If the die has a sibling, skip to the sibling, unless another | |
1384 | function has already updated info_ptr for us. */ | |
1385 | ||
1386 | /* NOTE: carlton/2003-06-16: This is a bit hackish, but whether | |
1387 | or not we want to update this depends on enough stuff (not | |
1388 | only pdi.tag but also whether or not pdi.name is NULL) that | |
1389 | this seems like the easiest way to handle the issue. */ | |
1390 | ||
1391 | if (!info_ptr_updated) | |
e7c27a73 | 1392 | info_ptr = locate_pdi_sibling (&pdi, info_ptr, abfd, cu); |
c906108c SS |
1393 | } |
1394 | ||
c906108c SS |
1395 | return info_ptr; |
1396 | } | |
1397 | ||
1398 | static void | |
e7c27a73 DJ |
1399 | add_partial_symbol (struct partial_die_info *pdi, |
1400 | struct dwarf2_cu *cu, const char *namespace) | |
c906108c | 1401 | { |
e7c27a73 | 1402 | struct objfile *objfile = cu->objfile; |
c906108c | 1403 | CORE_ADDR addr = 0; |
38d518c9 | 1404 | char *actual_name = pdi->name; |
5c4e30ca | 1405 | const struct partial_symbol *psym = NULL; |
e142c38c DJ |
1406 | CORE_ADDR baseaddr; |
1407 | ||
1408 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 1409 | |
63d06c5c DC |
1410 | /* If we're not in the global namespace and if the namespace name |
1411 | isn't encoded in a mangled actual_name, add it. */ | |
1412 | ||
1413 | if (pdi_needs_namespace (pdi->tag, namespace)) | |
1414 | { | |
1415 | actual_name = alloca (strlen (pdi->name) + 2 + strlen (namespace) + 1); | |
1416 | strcpy (actual_name, namespace); | |
1417 | strcat (actual_name, "::"); | |
1418 | strcat (actual_name, pdi->name); | |
1419 | } | |
1420 | ||
c906108c SS |
1421 | switch (pdi->tag) |
1422 | { | |
1423 | case DW_TAG_subprogram: | |
1424 | if (pdi->is_external) | |
1425 | { | |
38d518c9 | 1426 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1427 | mst_text, objfile); */ |
38d518c9 | 1428 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1429 | VAR_DOMAIN, LOC_BLOCK, |
1430 | &objfile->global_psymbols, | |
1431 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1432 | cu->language, objfile); |
c906108c SS |
1433 | } |
1434 | else | |
1435 | { | |
38d518c9 | 1436 | /*prim_record_minimal_symbol (actual_name, pdi->lowpc + baseaddr, |
c5aa993b | 1437 | mst_file_text, objfile); */ |
38d518c9 | 1438 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1439 | VAR_DOMAIN, LOC_BLOCK, |
1440 | &objfile->static_psymbols, | |
1441 | 0, pdi->lowpc + baseaddr, | |
e142c38c | 1442 | cu->language, objfile); |
c906108c SS |
1443 | } |
1444 | break; | |
1445 | case DW_TAG_variable: | |
1446 | if (pdi->is_external) | |
1447 | { | |
1448 | /* Global Variable. | |
1449 | Don't enter into the minimal symbol tables as there is | |
1450 | a minimal symbol table entry from the ELF symbols already. | |
1451 | Enter into partial symbol table if it has a location | |
1452 | descriptor or a type. | |
1453 | If the location descriptor is missing, new_symbol will create | |
1454 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
1455 | be determined from the minimal symbol table whenever the variable | |
1456 | is referenced. | |
1457 | The address for the partial symbol table entry is not | |
1458 | used by GDB, but it comes in handy for debugging partial symbol | |
1459 | table building. */ | |
1460 | ||
1461 | if (pdi->locdesc) | |
e7c27a73 | 1462 | addr = decode_locdesc (pdi->locdesc, cu); |
c906108c | 1463 | if (pdi->locdesc || pdi->has_type) |
38d518c9 | 1464 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1465 | VAR_DOMAIN, LOC_STATIC, |
1466 | &objfile->global_psymbols, | |
1467 | 0, addr + baseaddr, | |
e142c38c | 1468 | cu->language, objfile); |
c906108c SS |
1469 | } |
1470 | else | |
1471 | { | |
1472 | /* Static Variable. Skip symbols without location descriptors. */ | |
1473 | if (pdi->locdesc == NULL) | |
1474 | return; | |
e7c27a73 | 1475 | addr = decode_locdesc (pdi->locdesc, cu); |
38d518c9 | 1476 | /*prim_record_minimal_symbol (actual_name, addr + baseaddr, |
c5aa993b | 1477 | mst_file_data, objfile); */ |
38d518c9 | 1478 | psym = add_psymbol_to_list (actual_name, strlen (actual_name), |
5c4e30ca DC |
1479 | VAR_DOMAIN, LOC_STATIC, |
1480 | &objfile->static_psymbols, | |
1481 | 0, addr + baseaddr, | |
e142c38c | 1482 | cu->language, objfile); |
c906108c SS |
1483 | } |
1484 | break; | |
1485 | case DW_TAG_typedef: | |
1486 | case DW_TAG_base_type: | |
a02abb62 | 1487 | case DW_TAG_subrange_type: |
38d518c9 | 1488 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1489 | VAR_DOMAIN, LOC_TYPEDEF, |
c906108c | 1490 | &objfile->static_psymbols, |
e142c38c | 1491 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1492 | break; |
1493 | case DW_TAG_class_type: | |
1494 | case DW_TAG_structure_type: | |
1495 | case DW_TAG_union_type: | |
1496 | case DW_TAG_enumeration_type: | |
1497 | /* Skip aggregate types without children, these are external | |
c5aa993b | 1498 | references. */ |
63d06c5c DC |
1499 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
1500 | static vs. global. */ | |
c906108c SS |
1501 | if (pdi->has_children == 0) |
1502 | return; | |
38d518c9 | 1503 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1504 | STRUCT_DOMAIN, LOC_TYPEDEF, |
e142c38c | 1505 | cu->language == language_cplus |
63d06c5c DC |
1506 | ? &objfile->global_psymbols |
1507 | : &objfile->static_psymbols, | |
e142c38c | 1508 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c | 1509 | |
e142c38c | 1510 | if (cu->language == language_cplus) |
c906108c SS |
1511 | { |
1512 | /* For C++, these implicitly act as typedefs as well. */ | |
38d518c9 | 1513 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1514 | VAR_DOMAIN, LOC_TYPEDEF, |
63d06c5c | 1515 | &objfile->global_psymbols, |
e142c38c | 1516 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1517 | } |
1518 | break; | |
1519 | case DW_TAG_enumerator: | |
38d518c9 | 1520 | add_psymbol_to_list (actual_name, strlen (actual_name), |
176620f1 | 1521 | VAR_DOMAIN, LOC_CONST, |
e142c38c | 1522 | cu->language == language_cplus |
f6fe98ef DJ |
1523 | ? &objfile->global_psymbols |
1524 | : &objfile->static_psymbols, | |
e142c38c | 1525 | 0, (CORE_ADDR) 0, cu->language, objfile); |
c906108c SS |
1526 | break; |
1527 | default: | |
1528 | break; | |
1529 | } | |
5c4e30ca DC |
1530 | |
1531 | /* Check to see if we should scan the name for possible namespace | |
1532 | info. Only do this if this is C++, if we don't have namespace | |
1533 | debugging info in the file, if the psym is of an appropriate type | |
1534 | (otherwise we'll have psym == NULL), and if we actually had a | |
1535 | mangled name to begin with. */ | |
1536 | ||
e142c38c | 1537 | if (cu->language == language_cplus |
5c4e30ca DC |
1538 | && namespace == NULL |
1539 | && psym != NULL | |
1540 | && SYMBOL_CPLUS_DEMANGLED_NAME (psym) != NULL) | |
1541 | cp_check_possible_namespace_symbols (SYMBOL_CPLUS_DEMANGLED_NAME (psym), | |
1542 | objfile); | |
c906108c SS |
1543 | } |
1544 | ||
63d06c5c DC |
1545 | /* Determine whether a die of type TAG living in the C++ namespace |
1546 | NAMESPACE needs to have the name of the namespace prepended to the | |
1547 | name listed in the die. */ | |
1548 | ||
1549 | static int | |
1550 | pdi_needs_namespace (enum dwarf_tag tag, const char *namespace) | |
1551 | { | |
1552 | if (namespace == NULL || namespace[0] == '\0') | |
1553 | return 0; | |
1554 | ||
1555 | switch (tag) | |
1556 | { | |
1557 | case DW_TAG_typedef: | |
1558 | case DW_TAG_class_type: | |
1559 | case DW_TAG_structure_type: | |
1560 | case DW_TAG_union_type: | |
1561 | case DW_TAG_enumeration_type: | |
1562 | case DW_TAG_enumerator: | |
1563 | return 1; | |
1564 | default: | |
1565 | return 0; | |
1566 | } | |
1567 | } | |
1568 | ||
5c4e30ca DC |
1569 | /* Read a partial die corresponding to a namespace; also, add a symbol |
1570 | corresponding to that namespace to the symbol table. NAMESPACE is | |
1571 | the name of the enclosing namespace. */ | |
91c24f0a DC |
1572 | |
1573 | static char * | |
1574 | add_partial_namespace (struct partial_die_info *pdi, char *info_ptr, | |
91c24f0a | 1575 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
e7c27a73 | 1576 | struct dwarf2_cu *cu, const char *namespace) |
91c24f0a | 1577 | { |
e7c27a73 | 1578 | struct objfile *objfile = cu->objfile; |
5c4e30ca DC |
1579 | const char *new_name = pdi->name; |
1580 | char *full_name; | |
1581 | ||
e7c27a73 DJ |
1582 | /* Calculate the full name of the namespace that we just entered. */ |
1583 | ||
5c4e30ca DC |
1584 | if (new_name == NULL) |
1585 | new_name = "(anonymous namespace)"; | |
1586 | full_name = alloca (strlen (namespace) + 2 + strlen (new_name) + 1); | |
1587 | strcpy (full_name, namespace); | |
1588 | if (*namespace != '\0') | |
1589 | strcat (full_name, "::"); | |
1590 | strcat (full_name, new_name); | |
1591 | ||
63d06c5c DC |
1592 | /* FIXME: carlton/2003-10-07: We can't just replace this by a call |
1593 | to add_partial_symbol, because we don't have a way to pass in the | |
1594 | full name to that function; that might be a flaw in | |
1595 | add_partial_symbol's interface. */ | |
5c4e30ca DC |
1596 | |
1597 | add_psymbol_to_list (full_name, strlen (full_name), | |
1598 | VAR_DOMAIN, LOC_TYPEDEF, | |
1599 | &objfile->global_psymbols, | |
e142c38c | 1600 | 0, 0, cu->language, objfile); |
5c4e30ca DC |
1601 | |
1602 | /* Now scan partial symbols in that namespace. */ | |
1603 | ||
91c24f0a | 1604 | if (pdi->has_children) |
e7c27a73 | 1605 | info_ptr = scan_partial_symbols (info_ptr, lowpc, highpc, cu, full_name); |
91c24f0a DC |
1606 | |
1607 | return info_ptr; | |
1608 | } | |
1609 | ||
63d06c5c DC |
1610 | /* Read a partial die corresponding to a class or structure. */ |
1611 | ||
1612 | static char * | |
1613 | add_partial_structure (struct partial_die_info *struct_pdi, char *info_ptr, | |
1614 | struct dwarf2_cu *cu, | |
1615 | const char *namespace) | |
1616 | { | |
1617 | bfd *abfd = cu->objfile->obfd; | |
1618 | char *actual_class_name = NULL; | |
1619 | ||
e142c38c | 1620 | if (cu->language == language_cplus |
5d51ca54 | 1621 | && (namespace == NULL || namespace[0] == '\0') |
63d06c5c DC |
1622 | && struct_pdi->name != NULL |
1623 | && struct_pdi->has_children) | |
1624 | { | |
5d51ca54 DC |
1625 | /* See if we can figure out if the class lives in a namespace |
1626 | (or is nested within another class.) We do this by looking | |
63d06c5c DC |
1627 | for a member function; its demangled name will contain |
1628 | namespace info, if there is any. */ | |
1629 | ||
1630 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
1631 | what template types look like, because the demangler | |
1632 | frequently doesn't give the same name as the debug info. We | |
1633 | could fix this by only using the demangled name to get the | |
134d01f1 | 1634 | prefix (but see comment in read_structure_type). */ |
63d06c5c | 1635 | |
5d51ca54 DC |
1636 | /* FIXME: carlton/2004-01-23: If NAMESPACE equals "", we have |
1637 | the appropriate debug information, so it would be nice to be | |
1638 | able to avoid this hack. But NAMESPACE may not be the | |
1639 | namespace where this class was defined: NAMESPACE reflects | |
1640 | where STRUCT_PDI occurs in the tree of dies, but because of | |
1641 | DW_AT_specification, that may not actually tell us where the | |
1642 | class is defined. (See the comment in read_func_scope for an | |
1643 | example of how this could occur.) | |
1644 | ||
1645 | Unfortunately, our current partial symtab data structures are | |
1646 | completely unable to deal with DW_AT_specification. So, for | |
1647 | now, the best thing to do is to get nesting information from | |
1648 | places other than the tree structure of dies if there's any | |
1649 | chance that a DW_AT_specification is involved. :-( */ | |
1650 | ||
63d06c5c DC |
1651 | char *next_child = info_ptr; |
1652 | ||
1653 | while (1) | |
1654 | { | |
1655 | struct partial_die_info child_pdi; | |
1656 | ||
1657 | next_child = read_partial_die (&child_pdi, abfd, next_child, | |
1658 | cu); | |
1659 | if (!child_pdi.tag) | |
1660 | break; | |
1661 | if (child_pdi.tag == DW_TAG_subprogram) | |
1662 | { | |
1663 | actual_class_name = class_name_from_physname (child_pdi.name); | |
1664 | if (actual_class_name != NULL) | |
1665 | struct_pdi->name = actual_class_name; | |
1666 | break; | |
1667 | } | |
1668 | else | |
1669 | { | |
1670 | next_child = locate_pdi_sibling (&child_pdi, next_child, | |
1671 | abfd, cu); | |
1672 | } | |
1673 | } | |
1674 | } | |
1675 | ||
1676 | add_partial_symbol (struct_pdi, cu, namespace); | |
e142c38c | 1677 | xfree (actual_class_name); |
63d06c5c DC |
1678 | |
1679 | return locate_pdi_sibling (struct_pdi, info_ptr, abfd, cu); | |
1680 | } | |
1681 | ||
91c24f0a DC |
1682 | /* Read a partial die corresponding to an enumeration type. */ |
1683 | ||
1684 | static char * | |
1685 | add_partial_enumeration (struct partial_die_info *enum_pdi, char *info_ptr, | |
e7c27a73 | 1686 | struct dwarf2_cu *cu, const char *namespace) |
91c24f0a | 1687 | { |
e7c27a73 | 1688 | struct objfile *objfile = cu->objfile; |
91c24f0a DC |
1689 | bfd *abfd = objfile->obfd; |
1690 | struct partial_die_info pdi; | |
1691 | ||
1692 | if (enum_pdi->name != NULL) | |
e7c27a73 | 1693 | add_partial_symbol (enum_pdi, cu, namespace); |
91c24f0a DC |
1694 | |
1695 | while (1) | |
1696 | { | |
e7c27a73 | 1697 | info_ptr = read_partial_die (&pdi, abfd, info_ptr, cu); |
91c24f0a DC |
1698 | if (pdi.tag == 0) |
1699 | break; | |
1700 | if (pdi.tag != DW_TAG_enumerator || pdi.name == NULL) | |
1701 | complaint (&symfile_complaints, "malformed enumerator DIE ignored"); | |
1702 | else | |
e7c27a73 | 1703 | add_partial_symbol (&pdi, cu, namespace); |
91c24f0a DC |
1704 | } |
1705 | ||
1706 | return info_ptr; | |
1707 | } | |
1708 | ||
4bb7a0a7 DJ |
1709 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit CU. |
1710 | Return the corresponding abbrev, or NULL if the number is zero (indicating | |
1711 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
1712 | the initial number. */ | |
1713 | ||
1714 | static struct abbrev_info * | |
1715 | peek_die_abbrev (char *info_ptr, int *bytes_read, struct dwarf2_cu *cu) | |
1716 | { | |
1717 | bfd *abfd = cu->objfile->obfd; | |
1718 | unsigned int abbrev_number; | |
1719 | struct abbrev_info *abbrev; | |
1720 | ||
1721 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
1722 | ||
1723 | if (abbrev_number == 0) | |
1724 | return NULL; | |
1725 | ||
1726 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); | |
1727 | if (!abbrev) | |
1728 | { | |
1729 | error ("Dwarf Error: Could not find abbrev number %d [in module %s]", abbrev_number, | |
1730 | bfd_get_filename (abfd)); | |
1731 | } | |
1732 | ||
1733 | return abbrev; | |
1734 | } | |
1735 | ||
1736 | /* Scan the debug information for CU starting at INFO_PTR. Returns a | |
1737 | pointer to the end of a series of DIEs, terminated by an empty | |
1738 | DIE. Any children of the skipped DIEs will also be skipped. */ | |
1739 | ||
1740 | static char * | |
1741 | skip_children (char *info_ptr, struct dwarf2_cu *cu) | |
1742 | { | |
1743 | struct abbrev_info *abbrev; | |
1744 | unsigned int bytes_read; | |
1745 | ||
1746 | while (1) | |
1747 | { | |
1748 | abbrev = peek_die_abbrev (info_ptr, &bytes_read, cu); | |
1749 | if (abbrev == NULL) | |
1750 | return info_ptr + bytes_read; | |
1751 | else | |
1752 | info_ptr = skip_one_die (info_ptr + bytes_read, abbrev, cu); | |
1753 | } | |
1754 | } | |
1755 | ||
1756 | /* Scan the debug information for CU starting at INFO_PTR. INFO_PTR | |
1757 | should point just after the initial uleb128 of a DIE, and the | |
1758 | abbrev corresponding to that skipped uleb128 should be passed in | |
1759 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
1760 | children. */ | |
1761 | ||
1762 | static char * | |
1763 | skip_one_die (char *info_ptr, struct abbrev_info *abbrev, | |
1764 | struct dwarf2_cu *cu) | |
1765 | { | |
1766 | unsigned int bytes_read; | |
1767 | struct attribute attr; | |
1768 | bfd *abfd = cu->objfile->obfd; | |
1769 | unsigned int form, i; | |
1770 | ||
1771 | for (i = 0; i < abbrev->num_attrs; i++) | |
1772 | { | |
1773 | /* The only abbrev we care about is DW_AT_sibling. */ | |
1774 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
1775 | { | |
1776 | read_attribute (&attr, &abbrev->attrs[i], | |
1777 | abfd, info_ptr, cu); | |
1778 | if (attr.form == DW_FORM_ref_addr) | |
1779 | complaint (&symfile_complaints, "ignoring absolute DW_AT_sibling"); | |
1780 | else | |
6502dd73 DJ |
1781 | return dwarf2_per_objfile->info_buffer |
1782 | + dwarf2_get_ref_die_offset (&attr, cu); | |
4bb7a0a7 DJ |
1783 | } |
1784 | ||
1785 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
1786 | form = abbrev->attrs[i].form; | |
1787 | skip_attribute: | |
1788 | switch (form) | |
1789 | { | |
1790 | case DW_FORM_addr: | |
1791 | case DW_FORM_ref_addr: | |
1792 | info_ptr += cu->header.addr_size; | |
1793 | break; | |
1794 | case DW_FORM_data1: | |
1795 | case DW_FORM_ref1: | |
1796 | case DW_FORM_flag: | |
1797 | info_ptr += 1; | |
1798 | break; | |
1799 | case DW_FORM_data2: | |
1800 | case DW_FORM_ref2: | |
1801 | info_ptr += 2; | |
1802 | break; | |
1803 | case DW_FORM_data4: | |
1804 | case DW_FORM_ref4: | |
1805 | info_ptr += 4; | |
1806 | break; | |
1807 | case DW_FORM_data8: | |
1808 | case DW_FORM_ref8: | |
1809 | info_ptr += 8; | |
1810 | break; | |
1811 | case DW_FORM_string: | |
1812 | read_string (abfd, info_ptr, &bytes_read); | |
1813 | info_ptr += bytes_read; | |
1814 | break; | |
1815 | case DW_FORM_strp: | |
1816 | info_ptr += cu->header.offset_size; | |
1817 | break; | |
1818 | case DW_FORM_block: | |
1819 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
1820 | info_ptr += bytes_read; | |
1821 | break; | |
1822 | case DW_FORM_block1: | |
1823 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
1824 | break; | |
1825 | case DW_FORM_block2: | |
1826 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
1827 | break; | |
1828 | case DW_FORM_block4: | |
1829 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
1830 | break; | |
1831 | case DW_FORM_sdata: | |
1832 | case DW_FORM_udata: | |
1833 | case DW_FORM_ref_udata: | |
1834 | info_ptr = skip_leb128 (abfd, info_ptr); | |
1835 | break; | |
1836 | case DW_FORM_indirect: | |
1837 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
1838 | info_ptr += bytes_read; | |
1839 | /* We need to continue parsing from here, so just go back to | |
1840 | the top. */ | |
1841 | goto skip_attribute; | |
1842 | ||
1843 | default: | |
1844 | error ("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]", | |
1845 | dwarf_form_name (form), | |
1846 | bfd_get_filename (abfd)); | |
1847 | } | |
1848 | } | |
1849 | ||
1850 | if (abbrev->has_children) | |
1851 | return skip_children (info_ptr, cu); | |
1852 | else | |
1853 | return info_ptr; | |
1854 | } | |
1855 | ||
1856 | /* Locate ORIG_PDI's sibling; INFO_PTR should point to the start of | |
1857 | the next DIE after ORIG_PDI. */ | |
91c24f0a DC |
1858 | |
1859 | static char * | |
1860 | locate_pdi_sibling (struct partial_die_info *orig_pdi, char *info_ptr, | |
e7c27a73 | 1861 | bfd *abfd, struct dwarf2_cu *cu) |
91c24f0a DC |
1862 | { |
1863 | /* Do we know the sibling already? */ | |
1864 | ||
1865 | if (orig_pdi->sibling) | |
1866 | return orig_pdi->sibling; | |
1867 | ||
1868 | /* Are there any children to deal with? */ | |
1869 | ||
1870 | if (!orig_pdi->has_children) | |
1871 | return info_ptr; | |
1872 | ||
4bb7a0a7 | 1873 | /* Skip the children the long way. */ |
91c24f0a | 1874 | |
4bb7a0a7 | 1875 | return skip_children (info_ptr, cu); |
91c24f0a DC |
1876 | } |
1877 | ||
c906108c SS |
1878 | /* Expand this partial symbol table into a full symbol table. */ |
1879 | ||
1880 | static void | |
fba45db2 | 1881 | dwarf2_psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
1882 | { |
1883 | /* FIXME: This is barely more than a stub. */ | |
1884 | if (pst != NULL) | |
1885 | { | |
1886 | if (pst->readin) | |
1887 | { | |
1888 | warning ("bug: psymtab for %s is already read in.", pst->filename); | |
1889 | } | |
1890 | else | |
1891 | { | |
1892 | if (info_verbose) | |
1893 | { | |
1894 | printf_filtered ("Reading in symbols for %s...", pst->filename); | |
1895 | gdb_flush (gdb_stdout); | |
1896 | } | |
1897 | ||
1898 | psymtab_to_symtab_1 (pst); | |
1899 | ||
1900 | /* Finish up the debug error message. */ | |
1901 | if (info_verbose) | |
1902 | printf_filtered ("done.\n"); | |
1903 | } | |
1904 | } | |
1905 | } | |
1906 | ||
1907 | static void | |
fba45db2 | 1908 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c SS |
1909 | { |
1910 | struct objfile *objfile = pst->objfile; | |
1911 | bfd *abfd = objfile->obfd; | |
e7c27a73 | 1912 | struct dwarf2_cu cu; |
c906108c SS |
1913 | struct die_info *dies; |
1914 | unsigned long offset; | |
1915 | CORE_ADDR lowpc, highpc; | |
1916 | struct die_info *child_die; | |
1917 | char *info_ptr; | |
1918 | struct symtab *symtab; | |
1919 | struct cleanup *back_to; | |
0d53c4c4 | 1920 | struct attribute *attr; |
e142c38c | 1921 | CORE_ADDR baseaddr; |
c906108c | 1922 | |
6502dd73 DJ |
1923 | dwarf2_per_objfile = objfile_data (pst->objfile, dwarf2_objfile_data_key); |
1924 | ||
c906108c | 1925 | /* Set local variables from the partial symbol table info. */ |
c5aa993b | 1926 | offset = DWARF_INFO_OFFSET (pst); |
6502dd73 DJ |
1927 | |
1928 | info_ptr = dwarf2_per_objfile->info_buffer + offset; | |
e142c38c | 1929 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 1930 | |
63d06c5c DC |
1931 | /* We're in the global namespace. */ |
1932 | processing_current_prefix = ""; | |
1933 | ||
c906108c SS |
1934 | obstack_init (&dwarf2_tmp_obstack); |
1935 | back_to = make_cleanup (dwarf2_free_tmp_obstack, NULL); | |
1936 | ||
1937 | buildsym_init (); | |
a0b3c4fd | 1938 | make_cleanup (really_free_pendings, NULL); |
c906108c | 1939 | |
e7c27a73 DJ |
1940 | cu.objfile = objfile; |
1941 | ||
c906108c | 1942 | /* read in the comp_unit header */ |
e7c27a73 | 1943 | info_ptr = read_comp_unit_head (&cu.header, info_ptr, abfd); |
c906108c SS |
1944 | |
1945 | /* Read the abbrevs for this compilation unit */ | |
e7c27a73 | 1946 | dwarf2_read_abbrevs (abfd, &cu); |
f3dd6933 | 1947 | make_cleanup (dwarf2_free_abbrev_table, &cu); |
c906108c | 1948 | |
e142c38c DJ |
1949 | cu.header.offset = offset; |
1950 | ||
1951 | cu.list_in_scope = &file_symbols; | |
1952 | ||
e7c27a73 | 1953 | dies = read_comp_unit (info_ptr, abfd, &cu); |
c906108c | 1954 | |
74b7792f | 1955 | make_cleanup_free_die_list (dies); |
c906108c | 1956 | |
0d53c4c4 DJ |
1957 | /* Find the base address of the compilation unit for range lists and |
1958 | location lists. It will normally be specified by DW_AT_low_pc. | |
1959 | In DWARF-3 draft 4, the base address could be overridden by | |
1960 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
1961 | compilation units with discontinuous ranges. */ | |
1962 | ||
e7c27a73 DJ |
1963 | cu.header.base_known = 0; |
1964 | cu.header.base_address = 0; | |
0d53c4c4 | 1965 | |
e142c38c | 1966 | attr = dwarf2_attr (dies, DW_AT_entry_pc, &cu); |
0d53c4c4 DJ |
1967 | if (attr) |
1968 | { | |
e7c27a73 DJ |
1969 | cu.header.base_address = DW_ADDR (attr); |
1970 | cu.header.base_known = 1; | |
0d53c4c4 DJ |
1971 | } |
1972 | else | |
1973 | { | |
e142c38c | 1974 | attr = dwarf2_attr (dies, DW_AT_low_pc, &cu); |
0d53c4c4 DJ |
1975 | if (attr) |
1976 | { | |
e7c27a73 DJ |
1977 | cu.header.base_address = DW_ADDR (attr); |
1978 | cu.header.base_known = 1; | |
0d53c4c4 DJ |
1979 | } |
1980 | } | |
1981 | ||
c906108c | 1982 | /* Do line number decoding in read_file_scope () */ |
e7c27a73 | 1983 | process_die (dies, &cu); |
c906108c | 1984 | |
fae299cd DC |
1985 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
1986 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
1987 | it, by scanning the DIE's below the compilation unit. */ | |
1988 | get_scope_pc_bounds (dies, &lowpc, &highpc, &cu); | |
c906108c | 1989 | |
613e1657 | 1990 | symtab = end_symtab (highpc + baseaddr, objfile, SECT_OFF_TEXT (objfile)); |
c906108c SS |
1991 | |
1992 | /* Set symtab language to language from DW_AT_language. | |
1993 | If the compilation is from a C file generated by language preprocessors, | |
1994 | do not set the language if it was already deduced by start_subfile. */ | |
1995 | if (symtab != NULL | |
e142c38c | 1996 | && !(cu.language == language_c && symtab->language != language_c)) |
c906108c | 1997 | { |
e142c38c | 1998 | symtab->language = cu.language; |
c906108c SS |
1999 | } |
2000 | pst->symtab = symtab; | |
2001 | pst->readin = 1; | |
c906108c SS |
2002 | |
2003 | do_cleanups (back_to); | |
2004 | } | |
2005 | ||
2006 | /* Process a die and its children. */ | |
2007 | ||
2008 | static void | |
e7c27a73 | 2009 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
2010 | { |
2011 | switch (die->tag) | |
2012 | { | |
2013 | case DW_TAG_padding: | |
2014 | break; | |
2015 | case DW_TAG_compile_unit: | |
e7c27a73 | 2016 | read_file_scope (die, cu); |
c906108c SS |
2017 | break; |
2018 | case DW_TAG_subprogram: | |
e7c27a73 DJ |
2019 | read_subroutine_type (die, cu); |
2020 | read_func_scope (die, cu); | |
c906108c SS |
2021 | break; |
2022 | case DW_TAG_inlined_subroutine: | |
2023 | /* FIXME: These are ignored for now. | |
c5aa993b JM |
2024 | They could be used to set breakpoints on all inlined instances |
2025 | of a function and make GDB `next' properly over inlined functions. */ | |
c906108c SS |
2026 | break; |
2027 | case DW_TAG_lexical_block: | |
14898363 L |
2028 | case DW_TAG_try_block: |
2029 | case DW_TAG_catch_block: | |
e7c27a73 | 2030 | read_lexical_block_scope (die, cu); |
c906108c SS |
2031 | break; |
2032 | case DW_TAG_class_type: | |
2033 | case DW_TAG_structure_type: | |
2034 | case DW_TAG_union_type: | |
134d01f1 DJ |
2035 | read_structure_type (die, cu); |
2036 | process_structure_scope (die, cu); | |
c906108c SS |
2037 | break; |
2038 | case DW_TAG_enumeration_type: | |
134d01f1 DJ |
2039 | read_enumeration_type (die, cu); |
2040 | process_enumeration_scope (die, cu); | |
c906108c | 2041 | break; |
134d01f1 DJ |
2042 | |
2043 | /* FIXME drow/2004-03-14: These initialize die->type, but do not create | |
2044 | a symbol or process any children. Therefore it doesn't do anything | |
2045 | that won't be done on-demand by read_type_die. */ | |
c906108c | 2046 | case DW_TAG_subroutine_type: |
e7c27a73 | 2047 | read_subroutine_type (die, cu); |
c906108c SS |
2048 | break; |
2049 | case DW_TAG_array_type: | |
e7c27a73 | 2050 | read_array_type (die, cu); |
c906108c SS |
2051 | break; |
2052 | case DW_TAG_pointer_type: | |
e7c27a73 | 2053 | read_tag_pointer_type (die, cu); |
c906108c SS |
2054 | break; |
2055 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 2056 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
2057 | break; |
2058 | case DW_TAG_reference_type: | |
e7c27a73 | 2059 | read_tag_reference_type (die, cu); |
c906108c SS |
2060 | break; |
2061 | case DW_TAG_string_type: | |
e7c27a73 | 2062 | read_tag_string_type (die, cu); |
c906108c | 2063 | break; |
134d01f1 DJ |
2064 | /* END FIXME */ |
2065 | ||
c906108c | 2066 | case DW_TAG_base_type: |
e7c27a73 | 2067 | read_base_type (die, cu); |
134d01f1 DJ |
2068 | /* Add a typedef symbol for the type definition, if it has a |
2069 | DW_AT_name. */ | |
2070 | new_symbol (die, die->type, cu); | |
c906108c | 2071 | break; |
a02abb62 JB |
2072 | case DW_TAG_subrange_type: |
2073 | read_subrange_type (die, cu); | |
134d01f1 DJ |
2074 | /* Add a typedef symbol for the type definition, if it has a |
2075 | DW_AT_name. */ | |
2076 | new_symbol (die, die->type, cu); | |
a02abb62 | 2077 | break; |
c906108c | 2078 | case DW_TAG_common_block: |
e7c27a73 | 2079 | read_common_block (die, cu); |
c906108c SS |
2080 | break; |
2081 | case DW_TAG_common_inclusion: | |
2082 | break; | |
d9fa45fe | 2083 | case DW_TAG_namespace: |
63d06c5c | 2084 | processing_has_namespace_info = 1; |
e7c27a73 | 2085 | read_namespace (die, cu); |
d9fa45fe DC |
2086 | break; |
2087 | case DW_TAG_imported_declaration: | |
2088 | case DW_TAG_imported_module: | |
2089 | /* FIXME: carlton/2002-10-16: Eventually, we should use the | |
2090 | information contained in these. DW_TAG_imported_declaration | |
2091 | dies shouldn't have children; DW_TAG_imported_module dies | |
2092 | shouldn't in the C++ case, but conceivably could in the | |
2093 | Fortran case, so we'll have to replace this gdb_assert if | |
2094 | Fortran compilers start generating that info. */ | |
63d06c5c | 2095 | processing_has_namespace_info = 1; |
639d11d3 | 2096 | gdb_assert (die->child == NULL); |
d9fa45fe | 2097 | break; |
c906108c | 2098 | default: |
e7c27a73 | 2099 | new_symbol (die, NULL, cu); |
c906108c SS |
2100 | break; |
2101 | } | |
2102 | } | |
2103 | ||
5fb290d7 | 2104 | static void |
e142c38c | 2105 | initialize_cu_func_list (struct dwarf2_cu *cu) |
5fb290d7 | 2106 | { |
e142c38c | 2107 | cu->first_fn = cu->last_fn = cu->cached_fn = NULL; |
5fb290d7 DJ |
2108 | } |
2109 | ||
c906108c | 2110 | static void |
e7c27a73 | 2111 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2112 | { |
e7c27a73 DJ |
2113 | struct objfile *objfile = cu->objfile; |
2114 | struct comp_unit_head *cu_header = &cu->header; | |
debd256d | 2115 | struct cleanup *back_to = make_cleanup (null_cleanup, 0); |
2acceee2 | 2116 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
2117 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
2118 | struct attribute *attr; | |
2119 | char *name = "<unknown>"; | |
2120 | char *comp_dir = NULL; | |
2121 | struct die_info *child_die; | |
2122 | bfd *abfd = objfile->obfd; | |
debd256d | 2123 | struct line_header *line_header = 0; |
e142c38c DJ |
2124 | CORE_ADDR baseaddr; |
2125 | ||
2126 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 2127 | |
fae299cd | 2128 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
2129 | |
2130 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
2131 | from finish_block. */ | |
2acceee2 | 2132 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c SS |
2133 | lowpc = highpc; |
2134 | lowpc += baseaddr; | |
2135 | highpc += baseaddr; | |
2136 | ||
e142c38c | 2137 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2138 | if (attr) |
2139 | { | |
2140 | name = DW_STRING (attr); | |
2141 | } | |
e142c38c | 2142 | attr = dwarf2_attr (die, DW_AT_comp_dir, cu); |
c906108c SS |
2143 | if (attr) |
2144 | { | |
2145 | comp_dir = DW_STRING (attr); | |
2146 | if (comp_dir) | |
2147 | { | |
2148 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
2149 | directory, get rid of it. */ | |
2150 | char *cp = strchr (comp_dir, ':'); | |
2151 | ||
2152 | if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/') | |
2153 | comp_dir = cp + 1; | |
2154 | } | |
2155 | } | |
2156 | ||
2157 | if (objfile->ei.entry_point >= lowpc && | |
2158 | objfile->ei.entry_point < highpc) | |
2159 | { | |
627b3ba2 AC |
2160 | objfile->ei.deprecated_entry_file_lowpc = lowpc; |
2161 | objfile->ei.deprecated_entry_file_highpc = highpc; | |
c906108c SS |
2162 | } |
2163 | ||
e142c38c | 2164 | attr = dwarf2_attr (die, DW_AT_language, cu); |
c906108c SS |
2165 | if (attr) |
2166 | { | |
e142c38c | 2167 | set_cu_language (DW_UNSND (attr), cu); |
c906108c SS |
2168 | } |
2169 | ||
2170 | /* We assume that we're processing GCC output. */ | |
2171 | processing_gcc_compilation = 2; | |
2172 | #if 0 | |
c5aa993b JM |
2173 | /* FIXME:Do something here. */ |
2174 | if (dip->at_producer != NULL) | |
c906108c SS |
2175 | { |
2176 | handle_producer (dip->at_producer); | |
2177 | } | |
2178 | #endif | |
2179 | ||
2180 | /* The compilation unit may be in a different language or objfile, | |
2181 | zero out all remembered fundamental types. */ | |
e142c38c | 2182 | memset (cu->ftypes, 0, FT_NUM_MEMBERS * sizeof (struct type *)); |
c906108c SS |
2183 | |
2184 | start_symtab (name, comp_dir, lowpc); | |
2185 | record_debugformat ("DWARF 2"); | |
2186 | ||
e142c38c | 2187 | initialize_cu_func_list (cu); |
c906108c SS |
2188 | |
2189 | /* Process all dies in compilation unit. */ | |
639d11d3 | 2190 | if (die->child != NULL) |
c906108c | 2191 | { |
639d11d3 | 2192 | child_die = die->child; |
c906108c SS |
2193 | while (child_die && child_die->tag) |
2194 | { | |
e7c27a73 | 2195 | process_die (child_die, cu); |
c906108c SS |
2196 | child_die = sibling_die (child_die); |
2197 | } | |
2198 | } | |
5fb290d7 DJ |
2199 | |
2200 | /* Decode line number information if present. */ | |
e142c38c | 2201 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
5fb290d7 DJ |
2202 | if (attr) |
2203 | { | |
debd256d | 2204 | unsigned int line_offset = DW_UNSND (attr); |
e7c27a73 | 2205 | line_header = dwarf_decode_line_header (line_offset, abfd, cu); |
debd256d JB |
2206 | if (line_header) |
2207 | { | |
2208 | make_cleanup ((make_cleanup_ftype *) free_line_header, | |
2209 | (void *) line_header); | |
e7c27a73 | 2210 | dwarf_decode_lines (line_header, comp_dir, abfd, cu); |
debd256d | 2211 | } |
5fb290d7 | 2212 | } |
debd256d | 2213 | |
2e276125 JB |
2214 | /* Decode macro information, if present. Dwarf 2 macro information |
2215 | refers to information in the line number info statement program | |
2216 | header, so we can only read it if we've read the header | |
2217 | successfully. */ | |
e142c38c | 2218 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); |
41ff2da1 | 2219 | if (attr && line_header) |
2e276125 JB |
2220 | { |
2221 | unsigned int macro_offset = DW_UNSND (attr); | |
2222 | dwarf_decode_macros (line_header, macro_offset, | |
e7c27a73 | 2223 | comp_dir, abfd, cu); |
2e276125 | 2224 | } |
debd256d | 2225 | do_cleanups (back_to); |
5fb290d7 DJ |
2226 | } |
2227 | ||
2228 | static void | |
e142c38c DJ |
2229 | add_to_cu_func_list (const char *name, CORE_ADDR lowpc, CORE_ADDR highpc, |
2230 | struct dwarf2_cu *cu) | |
5fb290d7 DJ |
2231 | { |
2232 | struct function_range *thisfn; | |
2233 | ||
2234 | thisfn = (struct function_range *) | |
2235 | obstack_alloc (&dwarf2_tmp_obstack, sizeof (struct function_range)); | |
2236 | thisfn->name = name; | |
2237 | thisfn->lowpc = lowpc; | |
2238 | thisfn->highpc = highpc; | |
2239 | thisfn->seen_line = 0; | |
2240 | thisfn->next = NULL; | |
2241 | ||
e142c38c DJ |
2242 | if (cu->last_fn == NULL) |
2243 | cu->first_fn = thisfn; | |
5fb290d7 | 2244 | else |
e142c38c | 2245 | cu->last_fn->next = thisfn; |
5fb290d7 | 2246 | |
e142c38c | 2247 | cu->last_fn = thisfn; |
c906108c SS |
2248 | } |
2249 | ||
2250 | static void | |
e7c27a73 | 2251 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2252 | { |
e7c27a73 | 2253 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2254 | struct context_stack *new; |
c906108c SS |
2255 | CORE_ADDR lowpc; |
2256 | CORE_ADDR highpc; | |
2257 | struct die_info *child_die; | |
2258 | struct attribute *attr; | |
2259 | char *name; | |
fdde2d81 DC |
2260 | const char *previous_prefix = processing_current_prefix; |
2261 | struct cleanup *back_to = NULL; | |
e142c38c | 2262 | CORE_ADDR baseaddr; |
c906108c | 2263 | |
e142c38c DJ |
2264 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
2265 | ||
2266 | name = dwarf2_linkage_name (die, cu); | |
c906108c SS |
2267 | |
2268 | /* Ignore functions with missing or empty names and functions with | |
2269 | missing or invalid low and high pc attributes. */ | |
e7c27a73 | 2270 | if (name == NULL || !dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2271 | return; |
2272 | ||
086ed43d | 2273 | if (cu->language == language_cplus) |
fdde2d81 | 2274 | { |
086ed43d | 2275 | struct die_info *spec_die = die_specification (die, cu); |
fdde2d81 | 2276 | |
2a35147e JB |
2277 | /* NOTE: carlton/2004-01-23: We have to be careful in the |
2278 | presence of DW_AT_specification. For example, with GCC 3.4, | |
2279 | given the code | |
2280 | ||
2281 | namespace N { | |
2282 | void foo() { | |
2283 | // Definition of N::foo. | |
2284 | } | |
2285 | } | |
2286 | ||
2287 | then we'll have a tree of DIEs like this: | |
2288 | ||
2289 | 1: DW_TAG_compile_unit | |
2290 | 2: DW_TAG_namespace // N | |
2291 | 3: DW_TAG_subprogram // declaration of N::foo | |
2292 | 4: DW_TAG_subprogram // definition of N::foo | |
2293 | DW_AT_specification // refers to die #3 | |
2294 | ||
2295 | Thus, when processing die #4, we have to pretend that we're | |
2296 | in the context of its DW_AT_specification, namely the contex | |
2297 | of die #3. */ | |
fdde2d81 DC |
2298 | |
2299 | if (spec_die != NULL) | |
2300 | { | |
e142c38c | 2301 | char *specification_prefix = determine_prefix (spec_die, cu); |
fdde2d81 DC |
2302 | processing_current_prefix = specification_prefix; |
2303 | back_to = make_cleanup (xfree, specification_prefix); | |
2304 | } | |
2305 | } | |
2306 | ||
c906108c SS |
2307 | lowpc += baseaddr; |
2308 | highpc += baseaddr; | |
2309 | ||
5fb290d7 | 2310 | /* Record the function range for dwarf_decode_lines. */ |
e142c38c | 2311 | add_to_cu_func_list (name, lowpc, highpc, cu); |
5fb290d7 | 2312 | |
c906108c SS |
2313 | if (objfile->ei.entry_point >= lowpc && |
2314 | objfile->ei.entry_point < highpc) | |
2315 | { | |
2316 | objfile->ei.entry_func_lowpc = lowpc; | |
2317 | objfile->ei.entry_func_highpc = highpc; | |
2318 | } | |
2319 | ||
c906108c | 2320 | new = push_context (0, lowpc); |
e7c27a73 | 2321 | new->name = new_symbol (die, die->type, cu); |
4c2df51b | 2322 | |
4cecd739 DJ |
2323 | /* If there is a location expression for DW_AT_frame_base, record |
2324 | it. */ | |
e142c38c | 2325 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 2326 | if (attr) |
c034e007 AC |
2327 | /* FIXME: cagney/2004-01-26: The DW_AT_frame_base's location |
2328 | expression is being recorded directly in the function's symbol | |
2329 | and not in a separate frame-base object. I guess this hack is | |
2330 | to avoid adding some sort of frame-base adjunct/annex to the | |
2331 | function's symbol :-(. The problem with doing this is that it | |
2332 | results in a function symbol with a location expression that | |
2333 | has nothing to do with the location of the function, ouch! The | |
2334 | relationship should be: a function's symbol has-a frame base; a | |
2335 | frame-base has-a location expression. */ | |
e7c27a73 | 2336 | dwarf2_symbol_mark_computed (attr, new->name, cu); |
4c2df51b | 2337 | |
e142c38c | 2338 | cu->list_in_scope = &local_symbols; |
c906108c | 2339 | |
639d11d3 | 2340 | if (die->child != NULL) |
c906108c | 2341 | { |
639d11d3 | 2342 | child_die = die->child; |
c906108c SS |
2343 | while (child_die && child_die->tag) |
2344 | { | |
e7c27a73 | 2345 | process_die (child_die, cu); |
c906108c SS |
2346 | child_die = sibling_die (child_die); |
2347 | } | |
2348 | } | |
2349 | ||
2350 | new = pop_context (); | |
2351 | /* Make a block for the local symbols within. */ | |
2352 | finish_block (new->name, &local_symbols, new->old_blocks, | |
2353 | lowpc, highpc, objfile); | |
208d8187 JB |
2354 | |
2355 | /* In C++, we can have functions nested inside functions (e.g., when | |
2356 | a function declares a class that has methods). This means that | |
2357 | when we finish processing a function scope, we may need to go | |
2358 | back to building a containing block's symbol lists. */ | |
2359 | local_symbols = new->locals; | |
2360 | param_symbols = new->params; | |
2361 | ||
921e78cf JB |
2362 | /* If we've finished processing a top-level function, subsequent |
2363 | symbols go in the file symbol list. */ | |
2364 | if (outermost_context_p ()) | |
e142c38c | 2365 | cu->list_in_scope = &file_symbols; |
fdde2d81 DC |
2366 | |
2367 | processing_current_prefix = previous_prefix; | |
2368 | if (back_to != NULL) | |
2369 | do_cleanups (back_to); | |
c906108c SS |
2370 | } |
2371 | ||
2372 | /* Process all the DIES contained within a lexical block scope. Start | |
2373 | a new scope, process the dies, and then close the scope. */ | |
2374 | ||
2375 | static void | |
e7c27a73 | 2376 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 2377 | { |
e7c27a73 | 2378 | struct objfile *objfile = cu->objfile; |
52f0bd74 | 2379 | struct context_stack *new; |
c906108c SS |
2380 | CORE_ADDR lowpc, highpc; |
2381 | struct die_info *child_die; | |
e142c38c DJ |
2382 | CORE_ADDR baseaddr; |
2383 | ||
2384 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
2385 | |
2386 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
2387 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
2388 | as multiple lexical blocks? Handling children in a sane way would | |
2389 | be nasty. Might be easier to properly extend generic blocks to | |
2390 | describe ranges. */ | |
e7c27a73 | 2391 | if (!dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu)) |
c906108c SS |
2392 | return; |
2393 | lowpc += baseaddr; | |
2394 | highpc += baseaddr; | |
2395 | ||
2396 | push_context (0, lowpc); | |
639d11d3 | 2397 | if (die->child != NULL) |
c906108c | 2398 | { |
639d11d3 | 2399 | child_die = die->child; |
c906108c SS |
2400 | while (child_die && child_die->tag) |
2401 | { | |
e7c27a73 | 2402 | process_die (child_die, cu); |
c906108c SS |
2403 | child_die = sibling_die (child_die); |
2404 | } | |
2405 | } | |
2406 | new = pop_context (); | |
2407 | ||
2408 | if (local_symbols != NULL) | |
2409 | { | |
2410 | finish_block (0, &local_symbols, new->old_blocks, new->start_addr, | |
2411 | highpc, objfile); | |
2412 | } | |
2413 | local_symbols = new->locals; | |
2414 | } | |
2415 | ||
af34e669 DJ |
2416 | /* Get low and high pc attributes from a die. Return 1 if the attributes |
2417 | are present and valid, otherwise, return 0. Return -1 if the range is | |
2418 | discontinuous, i.e. derived from DW_AT_ranges information. */ | |
c906108c | 2419 | static int |
af34e669 | 2420 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
e7c27a73 | 2421 | CORE_ADDR *highpc, struct dwarf2_cu *cu) |
c906108c | 2422 | { |
e7c27a73 DJ |
2423 | struct objfile *objfile = cu->objfile; |
2424 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c | 2425 | struct attribute *attr; |
af34e669 DJ |
2426 | bfd *obfd = objfile->obfd; |
2427 | CORE_ADDR low = 0; | |
2428 | CORE_ADDR high = 0; | |
2429 | int ret = 0; | |
c906108c | 2430 | |
e142c38c | 2431 | attr = dwarf2_attr (die, DW_AT_high_pc, cu); |
c906108c | 2432 | if (attr) |
af34e669 DJ |
2433 | { |
2434 | high = DW_ADDR (attr); | |
e142c38c | 2435 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 DJ |
2436 | if (attr) |
2437 | low = DW_ADDR (attr); | |
2438 | else | |
2439 | /* Found high w/o low attribute. */ | |
2440 | return 0; | |
2441 | ||
2442 | /* Found consecutive range of addresses. */ | |
2443 | ret = 1; | |
2444 | } | |
c906108c | 2445 | else |
af34e669 | 2446 | { |
e142c38c | 2447 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
2448 | if (attr != NULL) |
2449 | { | |
2450 | unsigned int addr_size = cu_header->addr_size; | |
2451 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
2452 | /* Value of the DW_AT_ranges attribute is the offset in the | |
a604369a | 2453 | .debug_ranges section. */ |
af34e669 DJ |
2454 | unsigned int offset = DW_UNSND (attr); |
2455 | /* Base address selection entry. */ | |
0d53c4c4 DJ |
2456 | CORE_ADDR base; |
2457 | int found_base; | |
af34e669 | 2458 | int dummy; |
af34e669 DJ |
2459 | char *buffer; |
2460 | CORE_ADDR marker; | |
2461 | int low_set; | |
2462 | ||
0d53c4c4 DJ |
2463 | found_base = cu_header->base_known; |
2464 | base = cu_header->base_address; | |
a604369a | 2465 | |
6502dd73 | 2466 | if (offset >= dwarf2_per_objfile->ranges_size) |
a604369a KB |
2467 | { |
2468 | complaint (&symfile_complaints, | |
2469 | "Offset %d out of bounds for DW_AT_ranges attribute", | |
2470 | offset); | |
2471 | return 0; | |
2472 | } | |
6502dd73 | 2473 | buffer = dwarf2_per_objfile->ranges_buffer + offset; |
af34e669 | 2474 | |
af34e669 | 2475 | /* Read in the largest possible address. */ |
e7c27a73 | 2476 | marker = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
2477 | if ((marker & mask) == mask) |
2478 | { | |
2479 | /* If we found the largest possible address, then | |
2480 | read the base address. */ | |
e7c27a73 | 2481 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
2482 | buffer += 2 * addr_size; |
2483 | offset += 2 * addr_size; | |
2484 | found_base = 1; | |
2485 | } | |
2486 | ||
2487 | low_set = 0; | |
2488 | ||
2489 | while (1) | |
2490 | { | |
2491 | CORE_ADDR range_beginning, range_end; | |
2492 | ||
e7c27a73 | 2493 | range_beginning = read_address (obfd, buffer, cu, &dummy); |
af34e669 | 2494 | buffer += addr_size; |
e7c27a73 | 2495 | range_end = read_address (obfd, buffer, cu, &dummy); |
af34e669 DJ |
2496 | buffer += addr_size; |
2497 | offset += 2 * addr_size; | |
2498 | ||
2499 | /* An end of list marker is a pair of zero addresses. */ | |
2500 | if (range_beginning == 0 && range_end == 0) | |
2501 | /* Found the end of list entry. */ | |
2502 | break; | |
2503 | ||
2504 | /* Each base address selection entry is a pair of 2 values. | |
2505 | The first is the largest possible address, the second is | |
2506 | the base address. Check for a base address here. */ | |
2507 | if ((range_beginning & mask) == mask) | |
2508 | { | |
2509 | /* If we found the largest possible address, then | |
2510 | read the base address. */ | |
e7c27a73 | 2511 | base = read_address (obfd, buffer + addr_size, cu, &dummy); |
af34e669 DJ |
2512 | found_base = 1; |
2513 | continue; | |
2514 | } | |
2515 | ||
2516 | if (!found_base) | |
2517 | { | |
2518 | /* We have no valid base address for the ranges | |
2519 | data. */ | |
2520 | complaint (&symfile_complaints, | |
2521 | "Invalid .debug_ranges data (no base address)"); | |
2522 | return 0; | |
2523 | } | |
2524 | ||
8f05cde5 DJ |
2525 | range_beginning += base; |
2526 | range_end += base; | |
2527 | ||
af34e669 DJ |
2528 | /* FIXME: This is recording everything as a low-high |
2529 | segment of consecutive addresses. We should have a | |
2530 | data structure for discontiguous block ranges | |
2531 | instead. */ | |
2532 | if (! low_set) | |
2533 | { | |
2534 | low = range_beginning; | |
2535 | high = range_end; | |
2536 | low_set = 1; | |
2537 | } | |
2538 | else | |
2539 | { | |
2540 | if (range_beginning < low) | |
2541 | low = range_beginning; | |
2542 | if (range_end > high) | |
2543 | high = range_end; | |
2544 | } | |
2545 | } | |
2546 | ||
2547 | if (! low_set) | |
2548 | /* If the first entry is an end-of-list marker, the range | |
2549 | describes an empty scope, i.e. no instructions. */ | |
2550 | return 0; | |
2551 | ||
2552 | ret = -1; | |
2553 | } | |
2554 | } | |
c906108c SS |
2555 | |
2556 | if (high < low) | |
2557 | return 0; | |
2558 | ||
2559 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
2560 | eliminate duplicate copies of functions and vtables and such. | |
2561 | The linker will arbitrarily choose one and discard the others. | |
2562 | The AT_*_pc values for such functions refer to local labels in | |
2563 | these sections. If the section from that file was discarded, the | |
2564 | labels are not in the output, so the relocs get a value of 0. | |
2565 | If this is a discarded function, mark the pc bounds as invalid, | |
2566 | so that GDB will ignore it. */ | |
af34e669 | 2567 | if (low == 0 && (bfd_get_file_flags (obfd) & HAS_RELOC) == 0) |
c906108c SS |
2568 | return 0; |
2569 | ||
2570 | *lowpc = low; | |
2571 | *highpc = high; | |
af34e669 | 2572 | return ret; |
c906108c SS |
2573 | } |
2574 | ||
fae299cd DC |
2575 | /* Get the low and high pc's represented by the scope DIE, and store |
2576 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
2577 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
2578 | ||
2579 | static void | |
2580 | get_scope_pc_bounds (struct die_info *die, | |
2581 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
2582 | struct dwarf2_cu *cu) | |
2583 | { | |
2584 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
2585 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
2586 | CORE_ADDR current_low, current_high; | |
2587 | ||
2588 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu)) | |
2589 | { | |
2590 | best_low = current_low; | |
2591 | best_high = current_high; | |
2592 | } | |
2593 | else | |
2594 | { | |
2595 | struct die_info *child = die->child; | |
2596 | ||
2597 | while (child && child->tag) | |
2598 | { | |
2599 | switch (child->tag) { | |
2600 | case DW_TAG_subprogram: | |
2601 | if (dwarf2_get_pc_bounds (child, ¤t_low, ¤t_high, cu)) | |
2602 | { | |
2603 | best_low = min (best_low, current_low); | |
2604 | best_high = max (best_high, current_high); | |
2605 | } | |
2606 | break; | |
2607 | case DW_TAG_namespace: | |
2608 | /* FIXME: carlton/2004-01-16: Should we do this for | |
2609 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
2610 | that current GCC's always emit the DIEs corresponding | |
2611 | to definitions of methods of classes as children of a | |
2612 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
2613 | the DIEs giving the declarations, which could be | |
2614 | anywhere). But I don't see any reason why the | |
2615 | standards says that they have to be there. */ | |
2616 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
2617 | ||
2618 | if (current_low != ((CORE_ADDR) -1)) | |
2619 | { | |
2620 | best_low = min (best_low, current_low); | |
2621 | best_high = max (best_high, current_high); | |
2622 | } | |
2623 | break; | |
2624 | default: | |
2625 | /* Ignore. */ | |
2626 | break; | |
2627 | } | |
2628 | ||
2629 | child = sibling_die (child); | |
2630 | } | |
2631 | } | |
2632 | ||
2633 | *lowpc = best_low; | |
2634 | *highpc = best_high; | |
2635 | } | |
2636 | ||
c906108c SS |
2637 | /* Add an aggregate field to the field list. */ |
2638 | ||
2639 | static void | |
107d2387 | 2640 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 DJ |
2641 | struct dwarf2_cu *cu) |
2642 | { | |
2643 | struct objfile *objfile = cu->objfile; | |
c906108c SS |
2644 | struct nextfield *new_field; |
2645 | struct attribute *attr; | |
2646 | struct field *fp; | |
2647 | char *fieldname = ""; | |
2648 | ||
2649 | /* Allocate a new field list entry and link it in. */ | |
2650 | new_field = (struct nextfield *) xmalloc (sizeof (struct nextfield)); | |
b8c9b27d | 2651 | make_cleanup (xfree, new_field); |
c906108c SS |
2652 | memset (new_field, 0, sizeof (struct nextfield)); |
2653 | new_field->next = fip->fields; | |
2654 | fip->fields = new_field; | |
2655 | fip->nfields++; | |
2656 | ||
2657 | /* Handle accessibility and virtuality of field. | |
2658 | The default accessibility for members is public, the default | |
2659 | accessibility for inheritance is private. */ | |
2660 | if (die->tag != DW_TAG_inheritance) | |
2661 | new_field->accessibility = DW_ACCESS_public; | |
2662 | else | |
2663 | new_field->accessibility = DW_ACCESS_private; | |
2664 | new_field->virtuality = DW_VIRTUALITY_none; | |
2665 | ||
e142c38c | 2666 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
2667 | if (attr) |
2668 | new_field->accessibility = DW_UNSND (attr); | |
2669 | if (new_field->accessibility != DW_ACCESS_public) | |
2670 | fip->non_public_fields = 1; | |
e142c38c | 2671 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
2672 | if (attr) |
2673 | new_field->virtuality = DW_UNSND (attr); | |
2674 | ||
2675 | fp = &new_field->field; | |
a9a9bd0f | 2676 | |
e142c38c | 2677 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 2678 | { |
a9a9bd0f DC |
2679 | /* Data member other than a C++ static data member. */ |
2680 | ||
c906108c | 2681 | /* Get type of field. */ |
e7c27a73 | 2682 | fp->type = die_type (die, cu); |
c906108c | 2683 | |
01ad7f36 DJ |
2684 | FIELD_STATIC_KIND (*fp) = 0; |
2685 | ||
c906108c | 2686 | /* Get bit size of field (zero if none). */ |
e142c38c | 2687 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
2688 | if (attr) |
2689 | { | |
2690 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
2691 | } | |
2692 | else | |
2693 | { | |
2694 | FIELD_BITSIZE (*fp) = 0; | |
2695 | } | |
2696 | ||
2697 | /* Get bit offset of field. */ | |
e142c38c | 2698 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c SS |
2699 | if (attr) |
2700 | { | |
2701 | FIELD_BITPOS (*fp) = | |
e7c27a73 | 2702 | decode_locdesc (DW_BLOCK (attr), cu) * bits_per_byte; |
c906108c SS |
2703 | } |
2704 | else | |
2705 | FIELD_BITPOS (*fp) = 0; | |
e142c38c | 2706 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
2707 | if (attr) |
2708 | { | |
2709 | if (BITS_BIG_ENDIAN) | |
2710 | { | |
2711 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
2712 | additional bit offset from the MSB of the containing |
2713 | anonymous object to the MSB of the field. We don't | |
2714 | have to do anything special since we don't need to | |
2715 | know the size of the anonymous object. */ | |
c906108c SS |
2716 | FIELD_BITPOS (*fp) += DW_UNSND (attr); |
2717 | } | |
2718 | else | |
2719 | { | |
2720 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
2721 | MSB of the anonymous object, subtract off the number of |
2722 | bits from the MSB of the field to the MSB of the | |
2723 | object, and then subtract off the number of bits of | |
2724 | the field itself. The result is the bit offset of | |
2725 | the LSB of the field. */ | |
c906108c SS |
2726 | int anonymous_size; |
2727 | int bit_offset = DW_UNSND (attr); | |
2728 | ||
e142c38c | 2729 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
2730 | if (attr) |
2731 | { | |
2732 | /* The size of the anonymous object containing | |
2733 | the bit field is explicit, so use the | |
2734 | indicated size (in bytes). */ | |
2735 | anonymous_size = DW_UNSND (attr); | |
2736 | } | |
2737 | else | |
2738 | { | |
2739 | /* The size of the anonymous object containing | |
2740 | the bit field must be inferred from the type | |
2741 | attribute of the data member containing the | |
2742 | bit field. */ | |
2743 | anonymous_size = TYPE_LENGTH (fp->type); | |
2744 | } | |
2745 | FIELD_BITPOS (*fp) += anonymous_size * bits_per_byte | |
2746 | - bit_offset - FIELD_BITSIZE (*fp); | |
2747 | } | |
2748 | } | |
2749 | ||
2750 | /* Get name of field. */ | |
e142c38c | 2751 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
2752 | if (attr && DW_STRING (attr)) |
2753 | fieldname = DW_STRING (attr); | |
d8151005 DJ |
2754 | |
2755 | /* The name is already allocated along with this objfile, so we don't | |
2756 | need to duplicate it for the type. */ | |
2757 | fp->name = fieldname; | |
c906108c SS |
2758 | |
2759 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 2760 | pointer or virtual base class pointer) to private. */ |
e142c38c | 2761 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c SS |
2762 | { |
2763 | new_field->accessibility = DW_ACCESS_private; | |
2764 | fip->non_public_fields = 1; | |
2765 | } | |
2766 | } | |
a9a9bd0f | 2767 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 2768 | { |
a9a9bd0f DC |
2769 | /* C++ static member. */ |
2770 | ||
2771 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
2772 | is a declaration, but all versions of G++ as of this writing | |
2773 | (so through at least 3.2.1) incorrectly generate | |
2774 | DW_TAG_variable tags. */ | |
2775 | ||
c906108c | 2776 | char *physname; |
c906108c | 2777 | |
a9a9bd0f | 2778 | /* Get name of field. */ |
e142c38c | 2779 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
2780 | if (attr && DW_STRING (attr)) |
2781 | fieldname = DW_STRING (attr); | |
2782 | else | |
c906108c SS |
2783 | return; |
2784 | ||
2df3850c | 2785 | /* Get physical name. */ |
e142c38c | 2786 | physname = dwarf2_linkage_name (die, cu); |
c906108c | 2787 | |
d8151005 DJ |
2788 | /* The name is already allocated along with this objfile, so we don't |
2789 | need to duplicate it for the type. */ | |
2790 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 2791 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 2792 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
2793 | } |
2794 | else if (die->tag == DW_TAG_inheritance) | |
2795 | { | |
2796 | /* C++ base class field. */ | |
e142c38c | 2797 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); |
c906108c | 2798 | if (attr) |
e7c27a73 | 2799 | FIELD_BITPOS (*fp) = (decode_locdesc (DW_BLOCK (attr), cu) |
107d2387 | 2800 | * bits_per_byte); |
c906108c | 2801 | FIELD_BITSIZE (*fp) = 0; |
01ad7f36 | 2802 | FIELD_STATIC_KIND (*fp) = 0; |
e7c27a73 | 2803 | FIELD_TYPE (*fp) = die_type (die, cu); |
c906108c SS |
2804 | FIELD_NAME (*fp) = type_name_no_tag (fp->type); |
2805 | fip->nbaseclasses++; | |
2806 | } | |
2807 | } | |
2808 | ||
2809 | /* Create the vector of fields, and attach it to the type. */ | |
2810 | ||
2811 | static void | |
fba45db2 | 2812 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 2813 | struct dwarf2_cu *cu) |
c906108c SS |
2814 | { |
2815 | int nfields = fip->nfields; | |
2816 | ||
2817 | /* Record the field count, allocate space for the array of fields, | |
2818 | and create blank accessibility bitfields if necessary. */ | |
2819 | TYPE_NFIELDS (type) = nfields; | |
2820 | TYPE_FIELDS (type) = (struct field *) | |
2821 | TYPE_ALLOC (type, sizeof (struct field) * nfields); | |
2822 | memset (TYPE_FIELDS (type), 0, sizeof (struct field) * nfields); | |
2823 | ||
2824 | if (fip->non_public_fields) | |
2825 | { | |
2826 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2827 | ||
2828 | TYPE_FIELD_PRIVATE_BITS (type) = | |
2829 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2830 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
2831 | ||
2832 | TYPE_FIELD_PROTECTED_BITS (type) = | |
2833 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2834 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
2835 | ||
2836 | TYPE_FIELD_IGNORE_BITS (type) = | |
2837 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
2838 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
2839 | } | |
2840 | ||
2841 | /* If the type has baseclasses, allocate and clear a bit vector for | |
2842 | TYPE_FIELD_VIRTUAL_BITS. */ | |
2843 | if (fip->nbaseclasses) | |
2844 | { | |
2845 | int num_bytes = B_BYTES (fip->nbaseclasses); | |
2846 | char *pointer; | |
2847 | ||
2848 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
2849 | pointer = (char *) TYPE_ALLOC (type, num_bytes); | |
2850 | TYPE_FIELD_VIRTUAL_BITS (type) = (B_TYPE *) pointer; | |
2851 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->nbaseclasses); | |
2852 | TYPE_N_BASECLASSES (type) = fip->nbaseclasses; | |
2853 | } | |
2854 | ||
2855 | /* Copy the saved-up fields into the field vector. Start from the head | |
2856 | of the list, adding to the tail of the field array, so that they end | |
2857 | up in the same order in the array in which they were added to the list. */ | |
2858 | while (nfields-- > 0) | |
2859 | { | |
2860 | TYPE_FIELD (type, nfields) = fip->fields->field; | |
2861 | switch (fip->fields->accessibility) | |
2862 | { | |
c5aa993b JM |
2863 | case DW_ACCESS_private: |
2864 | SET_TYPE_FIELD_PRIVATE (type, nfields); | |
2865 | break; | |
c906108c | 2866 | |
c5aa993b JM |
2867 | case DW_ACCESS_protected: |
2868 | SET_TYPE_FIELD_PROTECTED (type, nfields); | |
2869 | break; | |
c906108c | 2870 | |
c5aa993b JM |
2871 | case DW_ACCESS_public: |
2872 | break; | |
c906108c | 2873 | |
c5aa993b JM |
2874 | default: |
2875 | /* Unknown accessibility. Complain and treat it as public. */ | |
2876 | { | |
4d3c2250 KB |
2877 | complaint (&symfile_complaints, "unsupported accessibility %d", |
2878 | fip->fields->accessibility); | |
c5aa993b JM |
2879 | } |
2880 | break; | |
c906108c SS |
2881 | } |
2882 | if (nfields < fip->nbaseclasses) | |
2883 | { | |
2884 | switch (fip->fields->virtuality) | |
2885 | { | |
c5aa993b JM |
2886 | case DW_VIRTUALITY_virtual: |
2887 | case DW_VIRTUALITY_pure_virtual: | |
2888 | SET_TYPE_FIELD_VIRTUAL (type, nfields); | |
2889 | break; | |
c906108c SS |
2890 | } |
2891 | } | |
2892 | fip->fields = fip->fields->next; | |
2893 | } | |
2894 | } | |
2895 | ||
c906108c SS |
2896 | /* Add a member function to the proper fieldlist. */ |
2897 | ||
2898 | static void | |
107d2387 | 2899 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 2900 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 2901 | { |
e7c27a73 | 2902 | struct objfile *objfile = cu->objfile; |
c906108c SS |
2903 | struct attribute *attr; |
2904 | struct fnfieldlist *flp; | |
2905 | int i; | |
2906 | struct fn_field *fnp; | |
2907 | char *fieldname; | |
2908 | char *physname; | |
2909 | struct nextfnfield *new_fnfield; | |
2910 | ||
2df3850c | 2911 | /* Get name of member function. */ |
e142c38c | 2912 | attr = dwarf2_attr (die, DW_AT_name, cu); |
2df3850c JM |
2913 | if (attr && DW_STRING (attr)) |
2914 | fieldname = DW_STRING (attr); | |
c906108c | 2915 | else |
2df3850c | 2916 | return; |
c906108c | 2917 | |
2df3850c | 2918 | /* Get the mangled name. */ |
e142c38c | 2919 | physname = dwarf2_linkage_name (die, cu); |
c906108c SS |
2920 | |
2921 | /* Look up member function name in fieldlist. */ | |
2922 | for (i = 0; i < fip->nfnfields; i++) | |
2923 | { | |
27bfe10e | 2924 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
c906108c SS |
2925 | break; |
2926 | } | |
2927 | ||
2928 | /* Create new list element if necessary. */ | |
2929 | if (i < fip->nfnfields) | |
2930 | flp = &fip->fnfieldlists[i]; | |
2931 | else | |
2932 | { | |
2933 | if ((fip->nfnfields % DW_FIELD_ALLOC_CHUNK) == 0) | |
2934 | { | |
2935 | fip->fnfieldlists = (struct fnfieldlist *) | |
2936 | xrealloc (fip->fnfieldlists, | |
2937 | (fip->nfnfields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 2938 | * sizeof (struct fnfieldlist)); |
c906108c | 2939 | if (fip->nfnfields == 0) |
c13c43fd | 2940 | make_cleanup (free_current_contents, &fip->fnfieldlists); |
c906108c SS |
2941 | } |
2942 | flp = &fip->fnfieldlists[fip->nfnfields]; | |
2943 | flp->name = fieldname; | |
2944 | flp->length = 0; | |
2945 | flp->head = NULL; | |
2946 | fip->nfnfields++; | |
2947 | } | |
2948 | ||
2949 | /* Create a new member function field and chain it to the field list | |
2950 | entry. */ | |
2951 | new_fnfield = (struct nextfnfield *) xmalloc (sizeof (struct nextfnfield)); | |
b8c9b27d | 2952 | make_cleanup (xfree, new_fnfield); |
c906108c SS |
2953 | memset (new_fnfield, 0, sizeof (struct nextfnfield)); |
2954 | new_fnfield->next = flp->head; | |
2955 | flp->head = new_fnfield; | |
2956 | flp->length++; | |
2957 | ||
2958 | /* Fill in the member function field info. */ | |
2959 | fnp = &new_fnfield->fnfield; | |
d8151005 DJ |
2960 | /* The name is already allocated along with this objfile, so we don't |
2961 | need to duplicate it for the type. */ | |
2962 | fnp->physname = physname ? physname : ""; | |
c906108c SS |
2963 | fnp->type = alloc_type (objfile); |
2964 | if (die->type && TYPE_CODE (die->type) == TYPE_CODE_FUNC) | |
2965 | { | |
c906108c | 2966 | int nparams = TYPE_NFIELDS (die->type); |
c906108c | 2967 | |
e26fb1d7 DC |
2968 | /* TYPE is the domain of this method, and DIE->TYPE is the type |
2969 | of the method itself (TYPE_CODE_METHOD). */ | |
2970 | smash_to_method_type (fnp->type, type, | |
ad2f7632 DJ |
2971 | TYPE_TARGET_TYPE (die->type), |
2972 | TYPE_FIELDS (die->type), | |
2973 | TYPE_NFIELDS (die->type), | |
2974 | TYPE_VARARGS (die->type)); | |
c906108c SS |
2975 | |
2976 | /* Handle static member functions. | |
c5aa993b JM |
2977 | Dwarf2 has no clean way to discern C++ static and non-static |
2978 | member functions. G++ helps GDB by marking the first | |
2979 | parameter for non-static member functions (which is the | |
2980 | this pointer) as artificial. We obtain this information | |
2981 | from read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
c906108c SS |
2982 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (die->type, 0) == 0) |
2983 | fnp->voffset = VOFFSET_STATIC; | |
2984 | } | |
2985 | else | |
4d3c2250 KB |
2986 | complaint (&symfile_complaints, "member function type missing for '%s'", |
2987 | physname); | |
c906108c SS |
2988 | |
2989 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 2990 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 2991 | fnp->fcontext = die_containing_type (die, cu); |
c906108c SS |
2992 | |
2993 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const | |
2994 | and is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
2995 | ||
2996 | /* Get accessibility. */ | |
e142c38c | 2997 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
2998 | if (attr) |
2999 | { | |
3000 | switch (DW_UNSND (attr)) | |
3001 | { | |
c5aa993b JM |
3002 | case DW_ACCESS_private: |
3003 | fnp->is_private = 1; | |
3004 | break; | |
3005 | case DW_ACCESS_protected: | |
3006 | fnp->is_protected = 1; | |
3007 | break; | |
c906108c SS |
3008 | } |
3009 | } | |
3010 | ||
b02dede2 | 3011 | /* Check for artificial methods. */ |
e142c38c | 3012 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
3013 | if (attr && DW_UNSND (attr) != 0) |
3014 | fnp->is_artificial = 1; | |
3015 | ||
c906108c | 3016 | /* Get index in virtual function table if it is a virtual member function. */ |
e142c38c | 3017 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
c906108c | 3018 | if (attr) |
8e19ed76 PS |
3019 | { |
3020 | /* Support the .debug_loc offsets */ | |
3021 | if (attr_form_is_block (attr)) | |
3022 | { | |
e7c27a73 | 3023 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; |
8e19ed76 PS |
3024 | } |
3025 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3026 | { | |
4d3c2250 | 3027 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3028 | } |
3029 | else | |
3030 | { | |
4d3c2250 KB |
3031 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
3032 | fieldname); | |
8e19ed76 PS |
3033 | } |
3034 | } | |
c906108c SS |
3035 | } |
3036 | ||
3037 | /* Create the vector of member function fields, and attach it to the type. */ | |
3038 | ||
3039 | static void | |
fba45db2 | 3040 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 3041 | struct dwarf2_cu *cu) |
c906108c SS |
3042 | { |
3043 | struct fnfieldlist *flp; | |
3044 | int total_length = 0; | |
3045 | int i; | |
3046 | ||
3047 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
3048 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
3049 | TYPE_ALLOC (type, sizeof (struct fn_fieldlist) * fip->nfnfields); | |
3050 | ||
3051 | for (i = 0, flp = fip->fnfieldlists; i < fip->nfnfields; i++, flp++) | |
3052 | { | |
3053 | struct nextfnfield *nfp = flp->head; | |
3054 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); | |
3055 | int k; | |
3056 | ||
3057 | TYPE_FN_FIELDLIST_NAME (type, i) = flp->name; | |
3058 | TYPE_FN_FIELDLIST_LENGTH (type, i) = flp->length; | |
3059 | fn_flp->fn_fields = (struct fn_field *) | |
3060 | TYPE_ALLOC (type, sizeof (struct fn_field) * flp->length); | |
3061 | for (k = flp->length; (k--, nfp); nfp = nfp->next) | |
c5aa993b | 3062 | fn_flp->fn_fields[k] = nfp->fnfield; |
c906108c SS |
3063 | |
3064 | total_length += flp->length; | |
3065 | } | |
3066 | ||
3067 | TYPE_NFN_FIELDS (type) = fip->nfnfields; | |
3068 | TYPE_NFN_FIELDS_TOTAL (type) = total_length; | |
3069 | } | |
3070 | ||
3071 | /* Called when we find the DIE that starts a structure or union scope | |
3072 | (definition) to process all dies that define the members of the | |
3073 | structure or union. | |
3074 | ||
3075 | NOTE: we need to call struct_type regardless of whether or not the | |
3076 | DIE has an at_name attribute, since it might be an anonymous | |
3077 | structure or union. This gets the type entered into our set of | |
3078 | user defined types. | |
3079 | ||
3080 | However, if the structure is incomplete (an opaque struct/union) | |
3081 | then suppress creating a symbol table entry for it since gdb only | |
3082 | wants to find the one with the complete definition. Note that if | |
3083 | it is complete, we just call new_symbol, which does it's own | |
3084 | checking about whether the struct/union is anonymous or not (and | |
3085 | suppresses creating a symbol table entry itself). */ | |
3086 | ||
3087 | static void | |
134d01f1 | 3088 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3089 | { |
e7c27a73 | 3090 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3091 | struct type *type; |
3092 | struct attribute *attr; | |
63d06c5c DC |
3093 | const char *previous_prefix = processing_current_prefix; |
3094 | struct cleanup *back_to = NULL; | |
c906108c | 3095 | |
134d01f1 DJ |
3096 | if (die->type) |
3097 | return; | |
3098 | ||
c906108c SS |
3099 | type = alloc_type (objfile); |
3100 | ||
3101 | INIT_CPLUS_SPECIFIC (type); | |
e142c38c | 3102 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3103 | if (attr && DW_STRING (attr)) |
3104 | { | |
e142c38c | 3105 | if (cu->language == language_cplus) |
63d06c5c | 3106 | { |
8176b9b8 DC |
3107 | char *new_prefix = determine_class_name (die, cu); |
3108 | TYPE_TAG_NAME (type) = obsavestring (new_prefix, | |
3109 | strlen (new_prefix), | |
3110 | &objfile->objfile_obstack); | |
3111 | back_to = make_cleanup (xfree, new_prefix); | |
63d06c5c DC |
3112 | processing_current_prefix = new_prefix; |
3113 | } | |
3114 | else | |
3115 | { | |
d8151005 DJ |
3116 | /* The name is already allocated along with this objfile, so |
3117 | we don't need to duplicate it for the type. */ | |
8176b9b8 | 3118 | TYPE_TAG_NAME (type) = DW_STRING (attr); |
63d06c5c | 3119 | } |
c906108c SS |
3120 | } |
3121 | ||
3122 | if (die->tag == DW_TAG_structure_type) | |
3123 | { | |
3124 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
3125 | } | |
3126 | else if (die->tag == DW_TAG_union_type) | |
3127 | { | |
3128 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
3129 | } | |
3130 | else | |
3131 | { | |
3132 | /* FIXME: TYPE_CODE_CLASS is currently defined to TYPE_CODE_STRUCT | |
c5aa993b | 3133 | in gdbtypes.h. */ |
c906108c SS |
3134 | TYPE_CODE (type) = TYPE_CODE_CLASS; |
3135 | } | |
3136 | ||
e142c38c | 3137 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3138 | if (attr) |
3139 | { | |
3140 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3141 | } | |
3142 | else | |
3143 | { | |
3144 | TYPE_LENGTH (type) = 0; | |
3145 | } | |
3146 | ||
dc718098 JB |
3147 | if (die_is_declaration (die, cu)) |
3148 | TYPE_FLAGS (type) |= TYPE_FLAG_STUB; | |
3149 | ||
c906108c SS |
3150 | /* We need to add the type field to the die immediately so we don't |
3151 | infinitely recurse when dealing with pointers to the structure | |
3152 | type within the structure itself. */ | |
3153 | die->type = type; | |
3154 | ||
e142c38c | 3155 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
3156 | { |
3157 | struct field_info fi; | |
3158 | struct die_info *child_die; | |
3159 | struct cleanup *back_to = make_cleanup (null_cleanup, NULL); | |
3160 | ||
3161 | memset (&fi, 0, sizeof (struct field_info)); | |
3162 | ||
639d11d3 | 3163 | child_die = die->child; |
c906108c SS |
3164 | |
3165 | while (child_die && child_die->tag) | |
3166 | { | |
a9a9bd0f DC |
3167 | if (child_die->tag == DW_TAG_member |
3168 | || child_die->tag == DW_TAG_variable) | |
c906108c | 3169 | { |
a9a9bd0f DC |
3170 | /* NOTE: carlton/2002-11-05: A C++ static data member |
3171 | should be a DW_TAG_member that is a declaration, but | |
3172 | all versions of G++ as of this writing (so through at | |
3173 | least 3.2.1) incorrectly generate DW_TAG_variable | |
3174 | tags for them instead. */ | |
e7c27a73 | 3175 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3176 | } |
8713b1b1 | 3177 | else if (child_die->tag == DW_TAG_subprogram) |
c906108c SS |
3178 | { |
3179 | /* C++ member function. */ | |
134d01f1 | 3180 | read_type_die (child_die, cu); |
e7c27a73 | 3181 | dwarf2_add_member_fn (&fi, child_die, type, cu); |
c906108c SS |
3182 | } |
3183 | else if (child_die->tag == DW_TAG_inheritance) | |
3184 | { | |
3185 | /* C++ base class field. */ | |
e7c27a73 | 3186 | dwarf2_add_field (&fi, child_die, cu); |
c906108c | 3187 | } |
c906108c SS |
3188 | child_die = sibling_die (child_die); |
3189 | } | |
3190 | ||
3191 | /* Attach fields and member functions to the type. */ | |
3192 | if (fi.nfields) | |
e7c27a73 | 3193 | dwarf2_attach_fields_to_type (&fi, type, cu); |
c906108c SS |
3194 | if (fi.nfnfields) |
3195 | { | |
e7c27a73 | 3196 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 3197 | |
c5aa993b | 3198 | /* Get the type which refers to the base class (possibly this |
c906108c SS |
3199 | class itself) which contains the vtable pointer for the current |
3200 | class from the DW_AT_containing_type attribute. */ | |
3201 | ||
e142c38c | 3202 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 3203 | { |
e7c27a73 | 3204 | struct type *t = die_containing_type (die, cu); |
c906108c SS |
3205 | |
3206 | TYPE_VPTR_BASETYPE (type) = t; | |
3207 | if (type == t) | |
3208 | { | |
c5aa993b JM |
3209 | static const char vptr_name[] = |
3210 | {'_', 'v', 'p', 't', 'r', '\0'}; | |
c906108c SS |
3211 | int i; |
3212 | ||
3213 | /* Our own class provides vtbl ptr. */ | |
3214 | for (i = TYPE_NFIELDS (t) - 1; | |
3215 | i >= TYPE_N_BASECLASSES (t); | |
3216 | --i) | |
3217 | { | |
3218 | char *fieldname = TYPE_FIELD_NAME (t, i); | |
3219 | ||
27bfe10e JB |
3220 | if ((strncmp (fieldname, vptr_name, |
3221 | strlen (vptr_name) - 1) | |
3222 | == 0) | |
c906108c SS |
3223 | && is_cplus_marker (fieldname[strlen (vptr_name)])) |
3224 | { | |
3225 | TYPE_VPTR_FIELDNO (type) = i; | |
3226 | break; | |
3227 | } | |
3228 | } | |
3229 | ||
3230 | /* Complain if virtual function table field not found. */ | |
3231 | if (i < TYPE_N_BASECLASSES (t)) | |
4d3c2250 KB |
3232 | complaint (&symfile_complaints, |
3233 | "virtual function table pointer not found when defining class '%s'", | |
3234 | TYPE_TAG_NAME (type) ? TYPE_TAG_NAME (type) : | |
3235 | ""); | |
c906108c SS |
3236 | } |
3237 | else | |
3238 | { | |
3239 | TYPE_VPTR_FIELDNO (type) = TYPE_VPTR_FIELDNO (t); | |
3240 | } | |
3241 | } | |
3242 | } | |
3243 | ||
c906108c SS |
3244 | do_cleanups (back_to); |
3245 | } | |
63d06c5c DC |
3246 | |
3247 | processing_current_prefix = previous_prefix; | |
3248 | if (back_to != NULL) | |
3249 | do_cleanups (back_to); | |
c906108c SS |
3250 | } |
3251 | ||
134d01f1 DJ |
3252 | static void |
3253 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
3254 | { | |
3255 | struct objfile *objfile = cu->objfile; | |
3256 | const char *previous_prefix = processing_current_prefix; | |
90aeadfc | 3257 | struct die_info *child_die = die->child; |
c906108c | 3258 | |
134d01f1 DJ |
3259 | if (TYPE_TAG_NAME (die->type) != NULL) |
3260 | processing_current_prefix = TYPE_TAG_NAME (die->type); | |
c906108c | 3261 | |
90aeadfc DC |
3262 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
3263 | snapshots) has been known to create a die giving a declaration | |
3264 | for a class that has, as a child, a die giving a definition for a | |
3265 | nested class. So we have to process our children even if the | |
3266 | current die is a declaration. Normally, of course, a declaration | |
3267 | won't have any children at all. */ | |
134d01f1 | 3268 | |
90aeadfc DC |
3269 | while (child_die != NULL && child_die->tag) |
3270 | { | |
3271 | if (child_die->tag == DW_TAG_member | |
3272 | || child_die->tag == DW_TAG_variable | |
3273 | || child_die->tag == DW_TAG_inheritance) | |
134d01f1 | 3274 | { |
90aeadfc | 3275 | /* Do nothing. */ |
134d01f1 | 3276 | } |
90aeadfc DC |
3277 | else |
3278 | process_die (child_die, cu); | |
134d01f1 | 3279 | |
90aeadfc | 3280 | child_die = sibling_die (child_die); |
134d01f1 DJ |
3281 | } |
3282 | ||
90aeadfc DC |
3283 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
3284 | new_symbol (die, die->type, cu); | |
3285 | ||
134d01f1 DJ |
3286 | processing_current_prefix = previous_prefix; |
3287 | } | |
3288 | ||
3289 | /* Given a DW_AT_enumeration_type die, set its type. We do not | |
3290 | complete the type's fields yet, or create any symbols. */ | |
c906108c SS |
3291 | |
3292 | static void | |
134d01f1 | 3293 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3294 | { |
e7c27a73 | 3295 | struct objfile *objfile = cu->objfile; |
c906108c | 3296 | struct type *type; |
c906108c | 3297 | struct attribute *attr; |
134d01f1 DJ |
3298 | |
3299 | if (die->type) | |
3300 | return; | |
c906108c SS |
3301 | |
3302 | type = alloc_type (objfile); | |
3303 | ||
3304 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
e142c38c | 3305 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
3306 | if (attr && DW_STRING (attr)) |
3307 | { | |
d8151005 | 3308 | char *name = DW_STRING (attr); |
63d06c5c DC |
3309 | |
3310 | if (processing_has_namespace_info) | |
3311 | { | |
b99607ea | 3312 | TYPE_TAG_NAME (type) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
3313 | processing_current_prefix, |
3314 | processing_current_prefix[0] == '\0' | |
3315 | ? "" : "::", | |
3316 | name); | |
3317 | } | |
3318 | else | |
3319 | { | |
d8151005 DJ |
3320 | /* The name is already allocated along with this objfile, so |
3321 | we don't need to duplicate it for the type. */ | |
3322 | TYPE_TAG_NAME (type) = name; | |
63d06c5c | 3323 | } |
c906108c SS |
3324 | } |
3325 | ||
e142c38c | 3326 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3327 | if (attr) |
3328 | { | |
3329 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3330 | } | |
3331 | else | |
3332 | { | |
3333 | TYPE_LENGTH (type) = 0; | |
3334 | } | |
3335 | ||
134d01f1 DJ |
3336 | die->type = type; |
3337 | } | |
3338 | ||
8176b9b8 DC |
3339 | /* Determine the name of the type represented by DIE, which should be |
3340 | a named C++ compound type. Return the name in question; the caller | |
3341 | is responsible for xfree()'ing it. */ | |
3342 | ||
3343 | static char * | |
3344 | determine_class_name (struct die_info *die, struct dwarf2_cu *cu) | |
3345 | { | |
3346 | struct cleanup *back_to = NULL; | |
3347 | struct die_info *spec_die = die_specification (die, cu); | |
3348 | char *new_prefix = NULL; | |
3349 | ||
3350 | /* If this is the definition of a class that is declared by another | |
3351 | die, then processing_current_prefix may not be accurate; see | |
3352 | read_func_scope for a similar example. */ | |
3353 | if (spec_die != NULL) | |
3354 | { | |
3355 | char *specification_prefix = determine_prefix (spec_die, cu); | |
3356 | processing_current_prefix = specification_prefix; | |
3357 | back_to = make_cleanup (xfree, specification_prefix); | |
3358 | } | |
3359 | ||
3360 | /* If we don't have namespace debug info, guess the name by trying | |
3361 | to demangle the names of members, just like we did in | |
3362 | add_partial_structure. */ | |
3363 | if (!processing_has_namespace_info) | |
3364 | { | |
3365 | struct die_info *child; | |
3366 | ||
3367 | for (child = die->child; | |
3368 | child != NULL && child->tag != 0; | |
3369 | child = sibling_die (child)) | |
3370 | { | |
3371 | if (child->tag == DW_TAG_subprogram) | |
3372 | { | |
3373 | new_prefix = class_name_from_physname (dwarf2_linkage_name | |
3374 | (child, cu)); | |
3375 | ||
3376 | if (new_prefix != NULL) | |
3377 | break; | |
3378 | } | |
3379 | } | |
3380 | } | |
3381 | ||
3382 | if (new_prefix == NULL) | |
3383 | { | |
3384 | const char *name = dwarf2_name (die, cu); | |
3385 | new_prefix = typename_concat (processing_current_prefix, | |
3386 | name ? name : "<<anonymous>>"); | |
3387 | } | |
3388 | ||
3389 | if (back_to != NULL) | |
3390 | do_cleanups (back_to); | |
3391 | ||
3392 | return new_prefix; | |
3393 | } | |
3394 | ||
134d01f1 DJ |
3395 | /* Given a pointer to a die which begins an enumeration, process all |
3396 | the dies that define the members of the enumeration, and create the | |
3397 | symbol for the enumeration type. | |
3398 | ||
3399 | NOTE: We reverse the order of the element list. */ | |
3400 | ||
3401 | static void | |
3402 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
3403 | { | |
3404 | struct objfile *objfile = cu->objfile; | |
3405 | struct die_info *child_die; | |
3406 | struct field *fields; | |
3407 | struct attribute *attr; | |
3408 | struct symbol *sym; | |
3409 | int num_fields; | |
3410 | int unsigned_enum = 1; | |
3411 | ||
c906108c SS |
3412 | num_fields = 0; |
3413 | fields = NULL; | |
639d11d3 | 3414 | if (die->child != NULL) |
c906108c | 3415 | { |
639d11d3 | 3416 | child_die = die->child; |
c906108c SS |
3417 | while (child_die && child_die->tag) |
3418 | { | |
3419 | if (child_die->tag != DW_TAG_enumerator) | |
3420 | { | |
e7c27a73 | 3421 | process_die (child_die, cu); |
c906108c SS |
3422 | } |
3423 | else | |
3424 | { | |
e142c38c | 3425 | attr = dwarf2_attr (child_die, DW_AT_name, cu); |
c906108c SS |
3426 | if (attr) |
3427 | { | |
134d01f1 | 3428 | sym = new_symbol (child_die, die->type, cu); |
c906108c SS |
3429 | if (SYMBOL_VALUE (sym) < 0) |
3430 | unsigned_enum = 0; | |
3431 | ||
3432 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
3433 | { | |
3434 | fields = (struct field *) | |
3435 | xrealloc (fields, | |
3436 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 3437 | * sizeof (struct field)); |
c906108c SS |
3438 | } |
3439 | ||
22abf04a | 3440 | FIELD_NAME (fields[num_fields]) = DEPRECATED_SYMBOL_NAME (sym); |
c906108c SS |
3441 | FIELD_TYPE (fields[num_fields]) = NULL; |
3442 | FIELD_BITPOS (fields[num_fields]) = SYMBOL_VALUE (sym); | |
3443 | FIELD_BITSIZE (fields[num_fields]) = 0; | |
01ad7f36 | 3444 | FIELD_STATIC_KIND (fields[num_fields]) = 0; |
c906108c SS |
3445 | |
3446 | num_fields++; | |
3447 | } | |
3448 | } | |
3449 | ||
3450 | child_die = sibling_die (child_die); | |
3451 | } | |
3452 | ||
3453 | if (num_fields) | |
3454 | { | |
134d01f1 DJ |
3455 | TYPE_NFIELDS (die->type) = num_fields; |
3456 | TYPE_FIELDS (die->type) = (struct field *) | |
3457 | TYPE_ALLOC (die->type, sizeof (struct field) * num_fields); | |
3458 | memcpy (TYPE_FIELDS (die->type), fields, | |
c906108c | 3459 | sizeof (struct field) * num_fields); |
b8c9b27d | 3460 | xfree (fields); |
c906108c SS |
3461 | } |
3462 | if (unsigned_enum) | |
134d01f1 | 3463 | TYPE_FLAGS (die->type) |= TYPE_FLAG_UNSIGNED; |
c906108c | 3464 | } |
134d01f1 DJ |
3465 | |
3466 | new_symbol (die, die->type, cu); | |
c906108c SS |
3467 | } |
3468 | ||
3469 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
3470 | the DIE's type field. For now, this only handles one dimensional | |
3471 | arrays. */ | |
3472 | ||
3473 | static void | |
e7c27a73 | 3474 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3475 | { |
e7c27a73 | 3476 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3477 | struct die_info *child_die; |
3478 | struct type *type = NULL; | |
3479 | struct type *element_type, *range_type, *index_type; | |
3480 | struct type **range_types = NULL; | |
3481 | struct attribute *attr; | |
3482 | int ndim = 0; | |
3483 | struct cleanup *back_to; | |
3484 | ||
3485 | /* Return if we've already decoded this type. */ | |
3486 | if (die->type) | |
3487 | { | |
3488 | return; | |
3489 | } | |
3490 | ||
e7c27a73 | 3491 | element_type = die_type (die, cu); |
c906108c SS |
3492 | |
3493 | /* Irix 6.2 native cc creates array types without children for | |
3494 | arrays with unspecified length. */ | |
639d11d3 | 3495 | if (die->child == NULL) |
c906108c | 3496 | { |
e142c38c | 3497 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c SS |
3498 | range_type = create_range_type (NULL, index_type, 0, -1); |
3499 | die->type = create_array_type (NULL, element_type, range_type); | |
3500 | return; | |
3501 | } | |
3502 | ||
3503 | back_to = make_cleanup (null_cleanup, NULL); | |
639d11d3 | 3504 | child_die = die->child; |
c906108c SS |
3505 | while (child_die && child_die->tag) |
3506 | { | |
3507 | if (child_die->tag == DW_TAG_subrange_type) | |
3508 | { | |
a02abb62 | 3509 | read_subrange_type (child_die, cu); |
c906108c | 3510 | |
a02abb62 JB |
3511 | if (child_die->type != NULL) |
3512 | { | |
3513 | /* The range type was succesfully read. Save it for | |
3514 | the array type creation. */ | |
3515 | if ((ndim % DW_FIELD_ALLOC_CHUNK) == 0) | |
3516 | { | |
3517 | range_types = (struct type **) | |
3518 | xrealloc (range_types, (ndim + DW_FIELD_ALLOC_CHUNK) | |
3519 | * sizeof (struct type *)); | |
3520 | if (ndim == 0) | |
3521 | make_cleanup (free_current_contents, &range_types); | |
3522 | } | |
3523 | range_types[ndim++] = child_die->type; | |
3524 | } | |
c906108c SS |
3525 | } |
3526 | child_die = sibling_die (child_die); | |
3527 | } | |
3528 | ||
3529 | /* Dwarf2 dimensions are output from left to right, create the | |
3530 | necessary array types in backwards order. */ | |
3531 | type = element_type; | |
3532 | while (ndim-- > 0) | |
3533 | type = create_array_type (NULL, type, range_types[ndim]); | |
3534 | ||
f5f8a009 EZ |
3535 | /* Understand Dwarf2 support for vector types (like they occur on |
3536 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
3537 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
3538 | custom vendor extension. The main difference between a regular | |
3539 | array and the vector variant is that vectors are passed by value | |
3540 | to functions. */ | |
e142c38c | 3541 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 EZ |
3542 | if (attr) |
3543 | TYPE_FLAGS (type) |= TYPE_FLAG_VECTOR; | |
3544 | ||
c906108c SS |
3545 | do_cleanups (back_to); |
3546 | ||
3547 | /* Install the type in the die. */ | |
3548 | die->type = type; | |
3549 | } | |
3550 | ||
3551 | /* First cut: install each common block member as a global variable. */ | |
3552 | ||
3553 | static void | |
e7c27a73 | 3554 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
3555 | { |
3556 | struct die_info *child_die; | |
3557 | struct attribute *attr; | |
3558 | struct symbol *sym; | |
3559 | CORE_ADDR base = (CORE_ADDR) 0; | |
3560 | ||
e142c38c | 3561 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
3562 | if (attr) |
3563 | { | |
8e19ed76 PS |
3564 | /* Support the .debug_loc offsets */ |
3565 | if (attr_form_is_block (attr)) | |
3566 | { | |
e7c27a73 | 3567 | base = decode_locdesc (DW_BLOCK (attr), cu); |
8e19ed76 PS |
3568 | } |
3569 | else if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) | |
3570 | { | |
4d3c2250 | 3571 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
3572 | } |
3573 | else | |
3574 | { | |
4d3c2250 KB |
3575 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
3576 | "common block member"); | |
8e19ed76 | 3577 | } |
c906108c | 3578 | } |
639d11d3 | 3579 | if (die->child != NULL) |
c906108c | 3580 | { |
639d11d3 | 3581 | child_die = die->child; |
c906108c SS |
3582 | while (child_die && child_die->tag) |
3583 | { | |
e7c27a73 | 3584 | sym = new_symbol (child_die, NULL, cu); |
e142c38c | 3585 | attr = dwarf2_attr (child_die, DW_AT_data_member_location, cu); |
c906108c SS |
3586 | if (attr) |
3587 | { | |
3588 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 3589 | base + decode_locdesc (DW_BLOCK (attr), cu); |
c906108c SS |
3590 | add_symbol_to_list (sym, &global_symbols); |
3591 | } | |
3592 | child_die = sibling_die (child_die); | |
3593 | } | |
3594 | } | |
3595 | } | |
3596 | ||
d9fa45fe DC |
3597 | /* Read a C++ namespace. */ |
3598 | ||
d9fa45fe | 3599 | static void |
e7c27a73 | 3600 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) |
d9fa45fe | 3601 | { |
e7c27a73 | 3602 | struct objfile *objfile = cu->objfile; |
38d518c9 | 3603 | const char *previous_prefix = processing_current_prefix; |
63d06c5c | 3604 | const char *name; |
9219021c DC |
3605 | int is_anonymous; |
3606 | struct die_info *current_die; | |
3607 | ||
e142c38c | 3608 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
3609 | |
3610 | /* Now build the name of the current namespace. */ | |
3611 | ||
38d518c9 | 3612 | if (previous_prefix[0] == '\0') |
9219021c | 3613 | { |
38d518c9 | 3614 | processing_current_prefix = name; |
9219021c DC |
3615 | } |
3616 | else | |
3617 | { | |
38d518c9 | 3618 | /* We need temp_name around because processing_current_prefix |
9219021c | 3619 | is a const char *. */ |
38d518c9 | 3620 | char *temp_name = alloca (strlen (previous_prefix) |
9219021c | 3621 | + 2 + strlen(name) + 1); |
38d518c9 | 3622 | strcpy (temp_name, previous_prefix); |
9219021c DC |
3623 | strcat (temp_name, "::"); |
3624 | strcat (temp_name, name); | |
3625 | ||
38d518c9 | 3626 | processing_current_prefix = temp_name; |
9219021c DC |
3627 | } |
3628 | ||
5c4e30ca DC |
3629 | /* Add a symbol associated to this if we haven't seen the namespace |
3630 | before. Also, add a using directive if it's an anonymous | |
3631 | namespace. */ | |
9219021c | 3632 | |
e142c38c | 3633 | if (dwarf2_extension (die, cu) == NULL) |
5c4e30ca DC |
3634 | { |
3635 | struct type *type; | |
3636 | ||
3637 | /* FIXME: carlton/2003-06-27: Once GDB is more const-correct, | |
3638 | this cast will hopefully become unnecessary. */ | |
3639 | type = init_type (TYPE_CODE_NAMESPACE, 0, 0, | |
38d518c9 | 3640 | (char *) processing_current_prefix, |
5c4e30ca DC |
3641 | objfile); |
3642 | TYPE_TAG_NAME (type) = TYPE_NAME (type); | |
3643 | ||
e7c27a73 | 3644 | new_symbol (die, type, cu); |
8176b9b8 | 3645 | die->type = type; |
5c4e30ca DC |
3646 | |
3647 | if (is_anonymous) | |
38d518c9 EZ |
3648 | cp_add_using_directive (processing_current_prefix, |
3649 | strlen (previous_prefix), | |
3650 | strlen (processing_current_prefix)); | |
5c4e30ca | 3651 | } |
9219021c | 3652 | |
639d11d3 | 3653 | if (die->child != NULL) |
d9fa45fe | 3654 | { |
639d11d3 | 3655 | struct die_info *child_die = die->child; |
d9fa45fe DC |
3656 | |
3657 | while (child_die && child_die->tag) | |
3658 | { | |
e7c27a73 | 3659 | process_die (child_die, cu); |
d9fa45fe DC |
3660 | child_die = sibling_die (child_die); |
3661 | } | |
3662 | } | |
9219021c | 3663 | |
38d518c9 EZ |
3664 | processing_current_prefix = previous_prefix; |
3665 | } | |
3666 | ||
3667 | /* Return the name of the namespace represented by DIE. Set | |
3668 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
3669 | namespace. */ | |
3670 | ||
3671 | static const char * | |
e142c38c | 3672 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
3673 | { |
3674 | struct die_info *current_die; | |
3675 | const char *name = NULL; | |
3676 | ||
3677 | /* Loop through the extensions until we find a name. */ | |
3678 | ||
3679 | for (current_die = die; | |
3680 | current_die != NULL; | |
e142c38c | 3681 | current_die = dwarf2_extension (die, cu)) |
38d518c9 | 3682 | { |
e142c38c | 3683 | name = dwarf2_name (current_die, cu); |
38d518c9 EZ |
3684 | if (name != NULL) |
3685 | break; | |
3686 | } | |
3687 | ||
3688 | /* Is it an anonymous namespace? */ | |
3689 | ||
3690 | *is_anonymous = (name == NULL); | |
3691 | if (*is_anonymous) | |
3692 | name = "(anonymous namespace)"; | |
3693 | ||
3694 | return name; | |
d9fa45fe DC |
3695 | } |
3696 | ||
c906108c SS |
3697 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
3698 | the user defined type vector. */ | |
3699 | ||
3700 | static void | |
e7c27a73 | 3701 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3702 | { |
e7c27a73 | 3703 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 3704 | struct type *type; |
8b2dbe47 KB |
3705 | struct attribute *attr_byte_size; |
3706 | struct attribute *attr_address_class; | |
3707 | int byte_size, addr_class; | |
c906108c SS |
3708 | |
3709 | if (die->type) | |
3710 | { | |
3711 | return; | |
3712 | } | |
3713 | ||
e7c27a73 | 3714 | type = lookup_pointer_type (die_type (die, cu)); |
8b2dbe47 | 3715 | |
e142c38c | 3716 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
3717 | if (attr_byte_size) |
3718 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 3719 | else |
8b2dbe47 KB |
3720 | byte_size = cu_header->addr_size; |
3721 | ||
e142c38c | 3722 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
3723 | if (attr_address_class) |
3724 | addr_class = DW_UNSND (attr_address_class); | |
3725 | else | |
3726 | addr_class = DW_ADDR_none; | |
3727 | ||
3728 | /* If the pointer size or address class is different than the | |
3729 | default, create a type variant marked as such and set the | |
3730 | length accordingly. */ | |
3731 | if (TYPE_LENGTH (type) != byte_size || addr_class != DW_ADDR_none) | |
c906108c | 3732 | { |
8b2dbe47 KB |
3733 | if (ADDRESS_CLASS_TYPE_FLAGS_P ()) |
3734 | { | |
3735 | int type_flags; | |
3736 | ||
3737 | type_flags = ADDRESS_CLASS_TYPE_FLAGS (byte_size, addr_class); | |
3738 | gdb_assert ((type_flags & ~TYPE_FLAG_ADDRESS_CLASS_ALL) == 0); | |
3739 | type = make_type_with_address_space (type, type_flags); | |
3740 | } | |
3741 | else if (TYPE_LENGTH (type) != byte_size) | |
3742 | { | |
4d3c2250 | 3743 | complaint (&symfile_complaints, "invalid pointer size %d", byte_size); |
8b2dbe47 KB |
3744 | } |
3745 | else { | |
3746 | /* Should we also complain about unhandled address classes? */ | |
3747 | } | |
c906108c | 3748 | } |
8b2dbe47 KB |
3749 | |
3750 | TYPE_LENGTH (type) = byte_size; | |
c906108c SS |
3751 | die->type = type; |
3752 | } | |
3753 | ||
3754 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
3755 | the user defined type vector. */ | |
3756 | ||
3757 | static void | |
e7c27a73 | 3758 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3759 | { |
e7c27a73 | 3760 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3761 | struct type *type; |
3762 | struct type *to_type; | |
3763 | struct type *domain; | |
3764 | ||
3765 | if (die->type) | |
3766 | { | |
3767 | return; | |
3768 | } | |
3769 | ||
3770 | type = alloc_type (objfile); | |
e7c27a73 DJ |
3771 | to_type = die_type (die, cu); |
3772 | domain = die_containing_type (die, cu); | |
c906108c SS |
3773 | smash_to_member_type (type, domain, to_type); |
3774 | ||
3775 | die->type = type; | |
3776 | } | |
3777 | ||
3778 | /* Extract all information from a DW_TAG_reference_type DIE and add to | |
3779 | the user defined type vector. */ | |
3780 | ||
3781 | static void | |
e7c27a73 | 3782 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3783 | { |
e7c27a73 | 3784 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
3785 | struct type *type; |
3786 | struct attribute *attr; | |
3787 | ||
3788 | if (die->type) | |
3789 | { | |
3790 | return; | |
3791 | } | |
3792 | ||
e7c27a73 | 3793 | type = lookup_reference_type (die_type (die, cu)); |
e142c38c | 3794 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
3795 | if (attr) |
3796 | { | |
3797 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
3798 | } | |
3799 | else | |
3800 | { | |
107d2387 | 3801 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c SS |
3802 | } |
3803 | die->type = type; | |
3804 | } | |
3805 | ||
3806 | static void | |
e7c27a73 | 3807 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3808 | { |
090c42a4 JB |
3809 | struct type *base_type; |
3810 | ||
c906108c SS |
3811 | if (die->type) |
3812 | { | |
3813 | return; | |
3814 | } | |
3815 | ||
e7c27a73 | 3816 | base_type = die_type (die, cu); |
090c42a4 | 3817 | die->type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
c906108c SS |
3818 | } |
3819 | ||
3820 | static void | |
e7c27a73 | 3821 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3822 | { |
090c42a4 JB |
3823 | struct type *base_type; |
3824 | ||
c906108c SS |
3825 | if (die->type) |
3826 | { | |
3827 | return; | |
3828 | } | |
3829 | ||
e7c27a73 | 3830 | base_type = die_type (die, cu); |
090c42a4 | 3831 | die->type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
c906108c SS |
3832 | } |
3833 | ||
3834 | /* Extract all information from a DW_TAG_string_type DIE and add to | |
3835 | the user defined type vector. It isn't really a user defined type, | |
3836 | but it behaves like one, with other DIE's using an AT_user_def_type | |
3837 | attribute to reference it. */ | |
3838 | ||
3839 | static void | |
e7c27a73 | 3840 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3841 | { |
e7c27a73 | 3842 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3843 | struct type *type, *range_type, *index_type, *char_type; |
3844 | struct attribute *attr; | |
3845 | unsigned int length; | |
3846 | ||
3847 | if (die->type) | |
3848 | { | |
3849 | return; | |
3850 | } | |
3851 | ||
e142c38c | 3852 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
3853 | if (attr) |
3854 | { | |
3855 | length = DW_UNSND (attr); | |
3856 | } | |
3857 | else | |
3858 | { | |
b21b22e0 | 3859 | /* check for the DW_AT_byte_size attribute */ |
e142c38c | 3860 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
3861 | if (attr) |
3862 | { | |
3863 | length = DW_UNSND (attr); | |
3864 | } | |
3865 | else | |
3866 | { | |
3867 | length = 1; | |
3868 | } | |
c906108c | 3869 | } |
e142c38c | 3870 | index_type = dwarf2_fundamental_type (objfile, FT_INTEGER, cu); |
c906108c | 3871 | range_type = create_range_type (NULL, index_type, 1, length); |
e142c38c | 3872 | if (cu->language == language_fortran) |
b21b22e0 PS |
3873 | { |
3874 | /* Need to create a unique string type for bounds | |
3875 | information */ | |
3876 | type = create_string_type (0, range_type); | |
3877 | } | |
3878 | else | |
3879 | { | |
e142c38c | 3880 | char_type = dwarf2_fundamental_type (objfile, FT_CHAR, cu); |
b21b22e0 PS |
3881 | type = create_string_type (char_type, range_type); |
3882 | } | |
c906108c SS |
3883 | die->type = type; |
3884 | } | |
3885 | ||
3886 | /* Handle DIES due to C code like: | |
3887 | ||
3888 | struct foo | |
c5aa993b JM |
3889 | { |
3890 | int (*funcp)(int a, long l); | |
3891 | int b; | |
3892 | }; | |
c906108c SS |
3893 | |
3894 | ('funcp' generates a DW_TAG_subroutine_type DIE) | |
c5aa993b | 3895 | */ |
c906108c SS |
3896 | |
3897 | static void | |
e7c27a73 | 3898 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
3899 | { |
3900 | struct type *type; /* Type that this function returns */ | |
3901 | struct type *ftype; /* Function that returns above type */ | |
3902 | struct attribute *attr; | |
3903 | ||
3904 | /* Decode the type that this subroutine returns */ | |
3905 | if (die->type) | |
3906 | { | |
3907 | return; | |
3908 | } | |
e7c27a73 | 3909 | type = die_type (die, cu); |
c906108c SS |
3910 | ftype = lookup_function_type (type); |
3911 | ||
3912 | /* All functions in C++ have prototypes. */ | |
e142c38c | 3913 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); |
c906108c | 3914 | if ((attr && (DW_UNSND (attr) != 0)) |
e142c38c | 3915 | || cu->language == language_cplus) |
c906108c SS |
3916 | TYPE_FLAGS (ftype) |= TYPE_FLAG_PROTOTYPED; |
3917 | ||
639d11d3 | 3918 | if (die->child != NULL) |
c906108c SS |
3919 | { |
3920 | struct die_info *child_die; | |
3921 | int nparams = 0; | |
3922 | int iparams = 0; | |
3923 | ||
3924 | /* Count the number of parameters. | |
3925 | FIXME: GDB currently ignores vararg functions, but knows about | |
3926 | vararg member functions. */ | |
639d11d3 | 3927 | child_die = die->child; |
c906108c SS |
3928 | while (child_die && child_die->tag) |
3929 | { | |
3930 | if (child_die->tag == DW_TAG_formal_parameter) | |
3931 | nparams++; | |
3932 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
3933 | TYPE_FLAGS (ftype) |= TYPE_FLAG_VARARGS; | |
3934 | child_die = sibling_die (child_die); | |
3935 | } | |
3936 | ||
3937 | /* Allocate storage for parameters and fill them in. */ | |
3938 | TYPE_NFIELDS (ftype) = nparams; | |
3939 | TYPE_FIELDS (ftype) = (struct field *) | |
3940 | TYPE_ALLOC (ftype, nparams * sizeof (struct field)); | |
3941 | ||
639d11d3 | 3942 | child_die = die->child; |
c906108c SS |
3943 | while (child_die && child_die->tag) |
3944 | { | |
3945 | if (child_die->tag == DW_TAG_formal_parameter) | |
3946 | { | |
3947 | /* Dwarf2 has no clean way to discern C++ static and non-static | |
c5aa993b JM |
3948 | member functions. G++ helps GDB by marking the first |
3949 | parameter for non-static member functions (which is the | |
3950 | this pointer) as artificial. We pass this information | |
3951 | to dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. */ | |
e142c38c | 3952 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
3953 | if (attr) |
3954 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
3955 | else | |
3956 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; | |
e7c27a73 | 3957 | TYPE_FIELD_TYPE (ftype, iparams) = die_type (child_die, cu); |
c906108c SS |
3958 | iparams++; |
3959 | } | |
3960 | child_die = sibling_die (child_die); | |
3961 | } | |
3962 | } | |
3963 | ||
3964 | die->type = ftype; | |
3965 | } | |
3966 | ||
3967 | static void | |
e7c27a73 | 3968 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3969 | { |
e7c27a73 | 3970 | struct objfile *objfile = cu->objfile; |
2f038fcb FF |
3971 | struct attribute *attr; |
3972 | char *name = NULL; | |
c906108c SS |
3973 | |
3974 | if (!die->type) | |
3975 | { | |
e142c38c | 3976 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c | 3977 | if (attr && DW_STRING (attr)) |
2f038fcb FF |
3978 | { |
3979 | name = DW_STRING (attr); | |
3980 | } | |
3981 | die->type = init_type (TYPE_CODE_TYPEDEF, 0, TYPE_FLAG_TARGET_STUB, name, objfile); | |
e7c27a73 | 3982 | TYPE_TARGET_TYPE (die->type) = die_type (die, cu); |
c906108c SS |
3983 | } |
3984 | } | |
3985 | ||
3986 | /* Find a representation of a given base type and install | |
3987 | it in the TYPE field of the die. */ | |
3988 | ||
3989 | static void | |
e7c27a73 | 3990 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 3991 | { |
e7c27a73 | 3992 | struct objfile *objfile = cu->objfile; |
c906108c SS |
3993 | struct type *type; |
3994 | struct attribute *attr; | |
3995 | int encoding = 0, size = 0; | |
3996 | ||
3997 | /* If we've already decoded this die, this is a no-op. */ | |
3998 | if (die->type) | |
3999 | { | |
4000 | return; | |
4001 | } | |
4002 | ||
e142c38c | 4003 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
4004 | if (attr) |
4005 | { | |
4006 | encoding = DW_UNSND (attr); | |
4007 | } | |
e142c38c | 4008 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
4009 | if (attr) |
4010 | { | |
4011 | size = DW_UNSND (attr); | |
4012 | } | |
e142c38c | 4013 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
4014 | if (attr && DW_STRING (attr)) |
4015 | { | |
4016 | enum type_code code = TYPE_CODE_INT; | |
f5ef7c67 | 4017 | int type_flags = 0; |
c906108c SS |
4018 | |
4019 | switch (encoding) | |
4020 | { | |
4021 | case DW_ATE_address: | |
4022 | /* Turn DW_ATE_address into a void * pointer. */ | |
4023 | code = TYPE_CODE_PTR; | |
f5ef7c67 | 4024 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4025 | break; |
4026 | case DW_ATE_boolean: | |
4027 | code = TYPE_CODE_BOOL; | |
f5ef7c67 | 4028 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4029 | break; |
4030 | case DW_ATE_complex_float: | |
4031 | code = TYPE_CODE_COMPLEX; | |
4032 | break; | |
4033 | case DW_ATE_float: | |
4034 | code = TYPE_CODE_FLT; | |
4035 | break; | |
4036 | case DW_ATE_signed: | |
4037 | case DW_ATE_signed_char: | |
4038 | break; | |
4039 | case DW_ATE_unsigned: | |
4040 | case DW_ATE_unsigned_char: | |
f5ef7c67 | 4041 | type_flags |= TYPE_FLAG_UNSIGNED; |
c906108c SS |
4042 | break; |
4043 | default: | |
4d3c2250 KB |
4044 | complaint (&symfile_complaints, "unsupported DW_AT_encoding: '%s'", |
4045 | dwarf_type_encoding_name (encoding)); | |
c906108c SS |
4046 | break; |
4047 | } | |
f5ef7c67 | 4048 | type = init_type (code, size, type_flags, DW_STRING (attr), objfile); |
c906108c | 4049 | if (encoding == DW_ATE_address) |
e142c38c DJ |
4050 | TYPE_TARGET_TYPE (type) = dwarf2_fundamental_type (objfile, FT_VOID, |
4051 | cu); | |
f65ca430 DJ |
4052 | else if (encoding == DW_ATE_complex_float) |
4053 | { | |
4054 | if (size == 32) | |
4055 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4056 | = dwarf2_fundamental_type (objfile, FT_EXT_PREC_FLOAT, cu); |
f65ca430 DJ |
4057 | else if (size == 16) |
4058 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4059 | = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
f65ca430 DJ |
4060 | else if (size == 8) |
4061 | TYPE_TARGET_TYPE (type) | |
e142c38c | 4062 | = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
f65ca430 | 4063 | } |
c906108c SS |
4064 | } |
4065 | else | |
4066 | { | |
e7c27a73 | 4067 | type = dwarf_base_type (encoding, size, cu); |
c906108c SS |
4068 | } |
4069 | die->type = type; | |
4070 | } | |
4071 | ||
a02abb62 JB |
4072 | /* Read the given DW_AT_subrange DIE. */ |
4073 | ||
4074 | static void | |
4075 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) | |
4076 | { | |
4077 | struct type *base_type; | |
4078 | struct type *range_type; | |
4079 | struct attribute *attr; | |
4080 | int low = 0; | |
4081 | int high = -1; | |
4082 | ||
4083 | /* If we have already decoded this die, then nothing more to do. */ | |
4084 | if (die->type) | |
4085 | return; | |
4086 | ||
4087 | base_type = die_type (die, cu); | |
4088 | if (base_type == NULL) | |
4089 | { | |
4090 | complaint (&symfile_complaints, | |
4091 | "DW_AT_type missing from DW_TAG_subrange_type"); | |
4092 | return; | |
4093 | } | |
4094 | ||
4095 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) | |
4096 | base_type = alloc_type (NULL); | |
4097 | ||
e142c38c | 4098 | if (cu->language == language_fortran) |
a02abb62 JB |
4099 | { |
4100 | /* FORTRAN implies a lower bound of 1, if not given. */ | |
4101 | low = 1; | |
4102 | } | |
4103 | ||
e142c38c | 4104 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 JB |
4105 | if (attr) |
4106 | low = dwarf2_get_attr_constant_value (attr, 0); | |
4107 | ||
e142c38c | 4108 | attr = dwarf2_attr (die, DW_AT_upper_bound, cu); |
a02abb62 JB |
4109 | if (attr) |
4110 | { | |
4111 | if (attr->form == DW_FORM_block1) | |
4112 | { | |
4113 | /* GCC encodes arrays with unspecified or dynamic length | |
4114 | with a DW_FORM_block1 attribute. | |
4115 | FIXME: GDB does not yet know how to handle dynamic | |
4116 | arrays properly, treat them as arrays with unspecified | |
4117 | length for now. | |
4118 | ||
4119 | FIXME: jimb/2003-09-22: GDB does not really know | |
4120 | how to handle arrays of unspecified length | |
4121 | either; we just represent them as zero-length | |
4122 | arrays. Choose an appropriate upper bound given | |
4123 | the lower bound we've computed above. */ | |
4124 | high = low - 1; | |
4125 | } | |
4126 | else | |
4127 | high = dwarf2_get_attr_constant_value (attr, 1); | |
4128 | } | |
4129 | ||
4130 | range_type = create_range_type (NULL, base_type, low, high); | |
4131 | ||
e142c38c | 4132 | attr = dwarf2_attr (die, DW_AT_name, cu); |
a02abb62 JB |
4133 | if (attr && DW_STRING (attr)) |
4134 | TYPE_NAME (range_type) = DW_STRING (attr); | |
4135 | ||
e142c38c | 4136 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
4137 | if (attr) |
4138 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
4139 | ||
4140 | die->type = range_type; | |
4141 | } | |
4142 | ||
4143 | ||
c906108c SS |
4144 | /* Read a whole compilation unit into a linked list of dies. */ |
4145 | ||
f9aca02d | 4146 | static struct die_info * |
e7c27a73 | 4147 | read_comp_unit (char *info_ptr, bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4148 | { |
b3810801 | 4149 | /* Reset die reference table; we are |
7f0e3f52 AC |
4150 | building new ones now. */ |
4151 | dwarf2_empty_hash_tables (); | |
c906108c | 4152 | |
e7c27a73 | 4153 | return read_die_and_children (info_ptr, abfd, cu, &info_ptr, NULL); |
639d11d3 DC |
4154 | } |
4155 | ||
4156 | /* Read a single die and all its descendents. Set the die's sibling | |
4157 | field to NULL; set other fields in the die correctly, and set all | |
4158 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
4159 | location of the info_ptr after reading all of those dies. PARENT | |
4160 | is the parent of the die in question. */ | |
4161 | ||
4162 | static struct die_info * | |
4163 | read_die_and_children (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4164 | struct dwarf2_cu *cu, |
639d11d3 DC |
4165 | char **new_info_ptr, |
4166 | struct die_info *parent) | |
4167 | { | |
4168 | struct die_info *die; | |
4169 | char *cur_ptr; | |
4170 | int has_children; | |
4171 | ||
e7c27a73 | 4172 | cur_ptr = read_full_die (&die, abfd, info_ptr, cu, &has_children); |
639d11d3 DC |
4173 | store_in_ref_table (die->offset, die); |
4174 | ||
4175 | if (has_children) | |
4176 | { | |
e7c27a73 | 4177 | die->child = read_die_and_siblings (cur_ptr, abfd, cu, |
639d11d3 DC |
4178 | new_info_ptr, die); |
4179 | } | |
4180 | else | |
4181 | { | |
4182 | die->child = NULL; | |
4183 | *new_info_ptr = cur_ptr; | |
4184 | } | |
4185 | ||
4186 | die->sibling = NULL; | |
4187 | die->parent = parent; | |
4188 | return die; | |
4189 | } | |
4190 | ||
4191 | /* Read a die, all of its descendents, and all of its siblings; set | |
4192 | all of the fields of all of the dies correctly. Arguments are as | |
4193 | in read_die_and_children. */ | |
4194 | ||
4195 | static struct die_info * | |
4196 | read_die_and_siblings (char *info_ptr, bfd *abfd, | |
e7c27a73 | 4197 | struct dwarf2_cu *cu, |
639d11d3 DC |
4198 | char **new_info_ptr, |
4199 | struct die_info *parent) | |
4200 | { | |
4201 | struct die_info *first_die, *last_sibling; | |
4202 | char *cur_ptr; | |
4203 | ||
c906108c | 4204 | cur_ptr = info_ptr; |
639d11d3 DC |
4205 | first_die = last_sibling = NULL; |
4206 | ||
4207 | while (1) | |
c906108c | 4208 | { |
639d11d3 | 4209 | struct die_info *die |
e7c27a73 | 4210 | = read_die_and_children (cur_ptr, abfd, cu, &cur_ptr, parent); |
639d11d3 DC |
4211 | |
4212 | if (!first_die) | |
c906108c | 4213 | { |
639d11d3 | 4214 | first_die = die; |
c906108c | 4215 | } |
639d11d3 | 4216 | else |
c906108c | 4217 | { |
639d11d3 | 4218 | last_sibling->sibling = die; |
c906108c SS |
4219 | } |
4220 | ||
639d11d3 | 4221 | if (die->tag == 0) |
c906108c | 4222 | { |
639d11d3 DC |
4223 | *new_info_ptr = cur_ptr; |
4224 | return first_die; | |
c906108c SS |
4225 | } |
4226 | else | |
4227 | { | |
639d11d3 | 4228 | last_sibling = die; |
c906108c SS |
4229 | } |
4230 | } | |
c906108c SS |
4231 | } |
4232 | ||
4233 | /* Free a linked list of dies. */ | |
4234 | ||
4235 | static void | |
fba45db2 | 4236 | free_die_list (struct die_info *dies) |
c906108c SS |
4237 | { |
4238 | struct die_info *die, *next; | |
4239 | ||
4240 | die = dies; | |
4241 | while (die) | |
4242 | { | |
639d11d3 DC |
4243 | if (die->child != NULL) |
4244 | free_die_list (die->child); | |
4245 | next = die->sibling; | |
b8c9b27d KB |
4246 | xfree (die->attrs); |
4247 | xfree (die); | |
c906108c SS |
4248 | die = next; |
4249 | } | |
4250 | } | |
4251 | ||
74b7792f AC |
4252 | static void |
4253 | do_free_die_list_cleanup (void *dies) | |
4254 | { | |
4255 | free_die_list (dies); | |
4256 | } | |
4257 | ||
4258 | static struct cleanup * | |
4259 | make_cleanup_free_die_list (struct die_info *dies) | |
4260 | { | |
4261 | return make_cleanup (do_free_die_list_cleanup, dies); | |
4262 | } | |
4263 | ||
4264 | ||
c906108c | 4265 | /* Read the contents of the section at OFFSET and of size SIZE from the |
8b92e4d5 | 4266 | object file specified by OBJFILE into the objfile_obstack and return it. */ |
c906108c | 4267 | |
b6af0555 | 4268 | char * |
188dd5d6 | 4269 | dwarf2_read_section (struct objfile *objfile, asection *sectp) |
c906108c SS |
4270 | { |
4271 | bfd *abfd = objfile->obfd; | |
086df311 | 4272 | char *buf, *retbuf; |
188dd5d6 | 4273 | bfd_size_type size = bfd_get_section_size_before_reloc (sectp); |
c906108c SS |
4274 | |
4275 | if (size == 0) | |
4276 | return NULL; | |
4277 | ||
8b92e4d5 | 4278 | buf = (char *) obstack_alloc (&objfile->objfile_obstack, size); |
086df311 DJ |
4279 | retbuf |
4280 | = (char *) symfile_relocate_debug_section (abfd, sectp, (bfd_byte *) buf); | |
4281 | if (retbuf != NULL) | |
4282 | return retbuf; | |
4283 | ||
188dd5d6 DJ |
4284 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
4285 | || bfd_bread (buf, size, abfd) != size) | |
4286 | error ("Dwarf Error: Can't read DWARF data from '%s'", | |
4287 | bfd_get_filename (abfd)); | |
4288 | ||
c906108c SS |
4289 | return buf; |
4290 | } | |
4291 | ||
4292 | /* In DWARF version 2, the description of the debugging information is | |
4293 | stored in a separate .debug_abbrev section. Before we read any | |
4294 | dies from a section we read in all abbreviations and install them | |
4295 | in a hash table. */ | |
4296 | ||
4297 | static void | |
e7c27a73 | 4298 | dwarf2_read_abbrevs (bfd *abfd, struct dwarf2_cu *cu) |
c906108c | 4299 | { |
e7c27a73 | 4300 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4301 | char *abbrev_ptr; |
4302 | struct abbrev_info *cur_abbrev; | |
4303 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
4304 | unsigned int abbrev_form, hash_number; | |
f3dd6933 DJ |
4305 | struct attr_abbrev *cur_attrs; |
4306 | unsigned int allocated_attrs; | |
c906108c | 4307 | |
57349743 | 4308 | /* Initialize dwarf2 abbrevs */ |
f3dd6933 DJ |
4309 | obstack_init (&cu->abbrev_obstack); |
4310 | cu->dwarf2_abbrevs = obstack_alloc (&cu->abbrev_obstack, | |
4311 | (ABBREV_HASH_SIZE | |
4312 | * sizeof (struct abbrev_info *))); | |
4313 | memset (cu->dwarf2_abbrevs, 0, | |
4314 | ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); | |
c906108c | 4315 | |
6502dd73 | 4316 | abbrev_ptr = dwarf2_per_objfile->abbrev_buffer + cu_header->abbrev_offset; |
c906108c SS |
4317 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
4318 | abbrev_ptr += bytes_read; | |
4319 | ||
f3dd6933 DJ |
4320 | allocated_attrs = ATTR_ALLOC_CHUNK; |
4321 | cur_attrs = xmalloc (allocated_attrs * sizeof (struct attr_abbrev)); | |
4322 | ||
c906108c SS |
4323 | /* loop until we reach an abbrev number of 0 */ |
4324 | while (abbrev_number) | |
4325 | { | |
f3dd6933 | 4326 | cur_abbrev = dwarf_alloc_abbrev (cu); |
c906108c SS |
4327 | |
4328 | /* read in abbrev header */ | |
4329 | cur_abbrev->number = abbrev_number; | |
4330 | cur_abbrev->tag = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4331 | abbrev_ptr += bytes_read; | |
4332 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
4333 | abbrev_ptr += 1; | |
4334 | ||
4335 | /* now read in declarations */ | |
4336 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4337 | abbrev_ptr += bytes_read; | |
4338 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4339 | abbrev_ptr += bytes_read; | |
4340 | while (abbrev_name) | |
4341 | { | |
f3dd6933 | 4342 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 4343 | { |
f3dd6933 DJ |
4344 | allocated_attrs += ATTR_ALLOC_CHUNK; |
4345 | cur_attrs | |
4346 | = xrealloc (cur_attrs, (allocated_attrs | |
4347 | * sizeof (struct attr_abbrev))); | |
c906108c | 4348 | } |
f3dd6933 DJ |
4349 | cur_attrs[cur_abbrev->num_attrs].name = abbrev_name; |
4350 | cur_attrs[cur_abbrev->num_attrs++].form = abbrev_form; | |
c906108c SS |
4351 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
4352 | abbrev_ptr += bytes_read; | |
4353 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4354 | abbrev_ptr += bytes_read; | |
4355 | } | |
4356 | ||
f3dd6933 DJ |
4357 | cur_abbrev->attrs = obstack_alloc (&cu->abbrev_obstack, |
4358 | (cur_abbrev->num_attrs | |
4359 | * sizeof (struct attr_abbrev))); | |
4360 | memcpy (cur_abbrev->attrs, cur_attrs, | |
4361 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
4362 | ||
c906108c | 4363 | hash_number = abbrev_number % ABBREV_HASH_SIZE; |
f3dd6933 DJ |
4364 | cur_abbrev->next = cu->dwarf2_abbrevs[hash_number]; |
4365 | cu->dwarf2_abbrevs[hash_number] = cur_abbrev; | |
c906108c SS |
4366 | |
4367 | /* Get next abbreviation. | |
4368 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
4369 | always properly terminated with an abbrev number of 0. |
4370 | Exit loop if we encounter an abbreviation which we have | |
4371 | already read (which means we are about to read the abbreviations | |
4372 | for the next compile unit) or if the end of the abbreviation | |
4373 | table is reached. */ | |
6502dd73 DJ |
4374 | if ((unsigned int) (abbrev_ptr - dwarf2_per_objfile->abbrev_buffer) |
4375 | >= dwarf2_per_objfile->abbrev_size) | |
c906108c SS |
4376 | break; |
4377 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
4378 | abbrev_ptr += bytes_read; | |
e7c27a73 | 4379 | if (dwarf2_lookup_abbrev (abbrev_number, cu) != NULL) |
c906108c SS |
4380 | break; |
4381 | } | |
f3dd6933 DJ |
4382 | |
4383 | xfree (cur_attrs); | |
c906108c SS |
4384 | } |
4385 | ||
f3dd6933 | 4386 | /* Release the memory used by the abbrev table for a compilation unit. */ |
c906108c | 4387 | |
c906108c | 4388 | static void |
f3dd6933 | 4389 | dwarf2_free_abbrev_table (void *ptr_to_cu) |
c906108c | 4390 | { |
f3dd6933 | 4391 | struct dwarf2_cu *cu = ptr_to_cu; |
c906108c | 4392 | |
f3dd6933 DJ |
4393 | obstack_free (&cu->abbrev_obstack, NULL); |
4394 | cu->dwarf2_abbrevs = NULL; | |
c906108c SS |
4395 | } |
4396 | ||
4397 | /* Lookup an abbrev_info structure in the abbrev hash table. */ | |
4398 | ||
4399 | static struct abbrev_info * | |
e7c27a73 | 4400 | dwarf2_lookup_abbrev (unsigned int number, struct dwarf2_cu *cu) |
c906108c SS |
4401 | { |
4402 | unsigned int hash_number; | |
4403 | struct abbrev_info *abbrev; | |
4404 | ||
4405 | hash_number = number % ABBREV_HASH_SIZE; | |
f3dd6933 | 4406 | abbrev = cu->dwarf2_abbrevs[hash_number]; |
c906108c SS |
4407 | |
4408 | while (abbrev) | |
4409 | { | |
4410 | if (abbrev->number == number) | |
4411 | return abbrev; | |
4412 | else | |
4413 | abbrev = abbrev->next; | |
4414 | } | |
4415 | return NULL; | |
4416 | } | |
4417 | ||
4418 | /* Read a minimal amount of information into the minimal die structure. */ | |
4419 | ||
4420 | static char * | |
107d2387 | 4421 | read_partial_die (struct partial_die_info *part_die, bfd *abfd, |
e7c27a73 | 4422 | char *info_ptr, struct dwarf2_cu *cu) |
c906108c SS |
4423 | { |
4424 | unsigned int abbrev_number, bytes_read, i; | |
4425 | struct abbrev_info *abbrev; | |
4426 | struct attribute attr; | |
4427 | struct attribute spec_attr; | |
4428 | int found_spec_attr = 0; | |
c5aa993b | 4429 | int has_low_pc_attr = 0; |
c906108c SS |
4430 | int has_high_pc_attr = 0; |
4431 | ||
4432 | *part_die = zeroed_partial_die; | |
c906108c SS |
4433 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
4434 | info_ptr += bytes_read; | |
4435 | if (!abbrev_number) | |
4436 | return info_ptr; | |
4437 | ||
e7c27a73 | 4438 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
4439 | if (!abbrev) |
4440 | { | |
659b0389 ML |
4441 | error ("Dwarf Error: Could not find abbrev number %d [in module %s]", abbrev_number, |
4442 | bfd_get_filename (abfd)); | |
c906108c | 4443 | } |
6502dd73 | 4444 | part_die->offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
4445 | part_die->tag = abbrev->tag; |
4446 | part_die->has_children = abbrev->has_children; | |
4447 | part_die->abbrev = abbrev_number; | |
4448 | ||
4449 | for (i = 0; i < abbrev->num_attrs; ++i) | |
4450 | { | |
e7c27a73 | 4451 | info_ptr = read_attribute (&attr, &abbrev->attrs[i], abfd, info_ptr, cu); |
c906108c SS |
4452 | |
4453 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 4454 | partial symbol table. */ |
c906108c SS |
4455 | switch (attr.name) |
4456 | { | |
4457 | case DW_AT_name: | |
4458 | ||
4459 | /* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */ | |
4460 | if (part_die->name == NULL) | |
4461 | part_die->name = DW_STRING (&attr); | |
4462 | break; | |
4463 | case DW_AT_MIPS_linkage_name: | |
4464 | part_die->name = DW_STRING (&attr); | |
4465 | break; | |
4466 | case DW_AT_low_pc: | |
4467 | has_low_pc_attr = 1; | |
4468 | part_die->lowpc = DW_ADDR (&attr); | |
4469 | break; | |
4470 | case DW_AT_high_pc: | |
4471 | has_high_pc_attr = 1; | |
4472 | part_die->highpc = DW_ADDR (&attr); | |
4473 | break; | |
4474 | case DW_AT_location: | |
8e19ed76 PS |
4475 | /* Support the .debug_loc offsets */ |
4476 | if (attr_form_is_block (&attr)) | |
4477 | { | |
4478 | part_die->locdesc = DW_BLOCK (&attr); | |
4479 | } | |
4480 | else if (attr.form == DW_FORM_data4 || attr.form == DW_FORM_data8) | |
4481 | { | |
4d3c2250 | 4482 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
4483 | } |
4484 | else | |
4485 | { | |
4d3c2250 KB |
4486 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
4487 | "partial symbol information"); | |
8e19ed76 | 4488 | } |
c906108c SS |
4489 | break; |
4490 | case DW_AT_language: | |
4491 | part_die->language = DW_UNSND (&attr); | |
4492 | break; | |
4493 | case DW_AT_external: | |
4494 | part_die->is_external = DW_UNSND (&attr); | |
4495 | break; | |
4496 | case DW_AT_declaration: | |
4497 | part_die->is_declaration = DW_UNSND (&attr); | |
4498 | break; | |
4499 | case DW_AT_type: | |
4500 | part_die->has_type = 1; | |
4501 | break; | |
4502 | case DW_AT_abstract_origin: | |
4503 | case DW_AT_specification: | |
4504 | found_spec_attr = 1; | |
4505 | spec_attr = attr; | |
4506 | break; | |
4507 | case DW_AT_sibling: | |
4508 | /* Ignore absolute siblings, they might point outside of | |
4509 | the current compile unit. */ | |
4510 | if (attr.form == DW_FORM_ref_addr) | |
4d3c2250 | 4511 | complaint (&symfile_complaints, "ignoring absolute DW_AT_sibling"); |
c906108c | 4512 | else |
6502dd73 DJ |
4513 | part_die->sibling = dwarf2_per_objfile->info_buffer |
4514 | + dwarf2_get_ref_die_offset (&attr, cu); | |
c906108c SS |
4515 | break; |
4516 | default: | |
4517 | break; | |
4518 | } | |
4519 | } | |
4520 | ||
4521 | /* If we found a reference attribute and the die has no name, try | |
4522 | to find a name in the referred to die. */ | |
4523 | ||
4524 | if (found_spec_attr && part_die->name == NULL) | |
4525 | { | |
4526 | struct partial_die_info spec_die; | |
4527 | char *spec_ptr; | |
c906108c | 4528 | |
6502dd73 | 4529 | spec_ptr = dwarf2_per_objfile->info_buffer |
e142c38c | 4530 | + dwarf2_get_ref_die_offset (&spec_attr, cu); |
e7c27a73 | 4531 | read_partial_die (&spec_die, abfd, spec_ptr, cu); |
c906108c SS |
4532 | if (spec_die.name) |
4533 | { | |
4534 | part_die->name = spec_die.name; | |
4535 | ||
4536 | /* Copy DW_AT_external attribute if it is set. */ | |
4537 | if (spec_die.is_external) | |
4538 | part_die->is_external = spec_die.is_external; | |
4539 | } | |
4540 | } | |
4541 | ||
4542 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
4543 | eliminate duplicate copies of functions and vtables and such. | |
4544 | The linker will arbitrarily choose one and discard the others. | |
4545 | The AT_*_pc values for such functions refer to local labels in | |
4546 | these sections. If the section from that file was discarded, the | |
4547 | labels are not in the output, so the relocs get a value of 0. | |
4548 | If this is a discarded function, mark the pc bounds as invalid, | |
4549 | so that GDB will ignore it. */ | |
4550 | if (has_low_pc_attr && has_high_pc_attr | |
4551 | && part_die->lowpc < part_die->highpc | |
4552 | && (part_die->lowpc != 0 | |
4553 | || (bfd_get_file_flags (abfd) & HAS_RELOC))) | |
0b010bcc | 4554 | part_die->has_pc_info = 1; |
c906108c SS |
4555 | return info_ptr; |
4556 | } | |
4557 | ||
639d11d3 DC |
4558 | /* Read the die from the .debug_info section buffer. Set DIEP to |
4559 | point to a newly allocated die with its information, except for its | |
4560 | child, sibling, and parent fields. Set HAS_CHILDREN to tell | |
4561 | whether the die has children or not. */ | |
c906108c SS |
4562 | |
4563 | static char * | |
107d2387 | 4564 | read_full_die (struct die_info **diep, bfd *abfd, char *info_ptr, |
e7c27a73 | 4565 | struct dwarf2_cu *cu, int *has_children) |
c906108c SS |
4566 | { |
4567 | unsigned int abbrev_number, bytes_read, i, offset; | |
4568 | struct abbrev_info *abbrev; | |
4569 | struct die_info *die; | |
4570 | ||
6502dd73 | 4571 | offset = info_ptr - dwarf2_per_objfile->info_buffer; |
c906108c SS |
4572 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
4573 | info_ptr += bytes_read; | |
4574 | if (!abbrev_number) | |
4575 | { | |
4576 | die = dwarf_alloc_die (); | |
4577 | die->tag = 0; | |
4578 | die->abbrev = abbrev_number; | |
4579 | die->type = NULL; | |
4580 | *diep = die; | |
639d11d3 | 4581 | *has_children = 0; |
c906108c SS |
4582 | return info_ptr; |
4583 | } | |
4584 | ||
e7c27a73 | 4585 | abbrev = dwarf2_lookup_abbrev (abbrev_number, cu); |
c906108c SS |
4586 | if (!abbrev) |
4587 | { | |
639d11d3 DC |
4588 | error ("Dwarf Error: could not find abbrev number %d [in module %s]", |
4589 | abbrev_number, | |
4590 | bfd_get_filename (abfd)); | |
c906108c SS |
4591 | } |
4592 | die = dwarf_alloc_die (); | |
4593 | die->offset = offset; | |
4594 | die->tag = abbrev->tag; | |
c906108c SS |
4595 | die->abbrev = abbrev_number; |
4596 | die->type = NULL; | |
4597 | ||
4598 | die->num_attrs = abbrev->num_attrs; | |
4599 | die->attrs = (struct attribute *) | |
4600 | xmalloc (die->num_attrs * sizeof (struct attribute)); | |
4601 | ||
4602 | for (i = 0; i < abbrev->num_attrs; ++i) | |
4603 | { | |
4604 | info_ptr = read_attribute (&die->attrs[i], &abbrev->attrs[i], | |
e7c27a73 | 4605 | abfd, info_ptr, cu); |
c906108c SS |
4606 | } |
4607 | ||
4608 | *diep = die; | |
639d11d3 | 4609 | *has_children = abbrev->has_children; |
c906108c SS |
4610 | return info_ptr; |
4611 | } | |
4612 | ||
a8329558 | 4613 | /* Read an attribute value described by an attribute form. */ |
c906108c SS |
4614 | |
4615 | static char * | |
a8329558 | 4616 | read_attribute_value (struct attribute *attr, unsigned form, |
e7c27a73 DJ |
4617 | bfd *abfd, char *info_ptr, |
4618 | struct dwarf2_cu *cu) | |
c906108c | 4619 | { |
e7c27a73 | 4620 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4621 | unsigned int bytes_read; |
4622 | struct dwarf_block *blk; | |
4623 | ||
a8329558 KW |
4624 | attr->form = form; |
4625 | switch (form) | |
c906108c SS |
4626 | { |
4627 | case DW_FORM_addr: | |
4628 | case DW_FORM_ref_addr: | |
e7c27a73 | 4629 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
107d2387 | 4630 | info_ptr += bytes_read; |
c906108c SS |
4631 | break; |
4632 | case DW_FORM_block2: | |
4633 | blk = dwarf_alloc_block (); | |
4634 | blk->size = read_2_bytes (abfd, info_ptr); | |
4635 | info_ptr += 2; | |
4636 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4637 | info_ptr += blk->size; | |
4638 | DW_BLOCK (attr) = blk; | |
4639 | break; | |
4640 | case DW_FORM_block4: | |
4641 | blk = dwarf_alloc_block (); | |
4642 | blk->size = read_4_bytes (abfd, info_ptr); | |
4643 | info_ptr += 4; | |
4644 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4645 | info_ptr += blk->size; | |
4646 | DW_BLOCK (attr) = blk; | |
4647 | break; | |
4648 | case DW_FORM_data2: | |
4649 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
4650 | info_ptr += 2; | |
4651 | break; | |
4652 | case DW_FORM_data4: | |
4653 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
4654 | info_ptr += 4; | |
4655 | break; | |
4656 | case DW_FORM_data8: | |
4657 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
4658 | info_ptr += 8; | |
4659 | break; | |
4660 | case DW_FORM_string: | |
4661 | DW_STRING (attr) = read_string (abfd, info_ptr, &bytes_read); | |
4662 | info_ptr += bytes_read; | |
4663 | break; | |
4bdf3d34 JJ |
4664 | case DW_FORM_strp: |
4665 | DW_STRING (attr) = read_indirect_string (abfd, info_ptr, cu_header, | |
4666 | &bytes_read); | |
4667 | info_ptr += bytes_read; | |
4668 | break; | |
c906108c SS |
4669 | case DW_FORM_block: |
4670 | blk = dwarf_alloc_block (); | |
4671 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4672 | info_ptr += bytes_read; | |
4673 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4674 | info_ptr += blk->size; | |
4675 | DW_BLOCK (attr) = blk; | |
4676 | break; | |
4677 | case DW_FORM_block1: | |
4678 | blk = dwarf_alloc_block (); | |
4679 | blk->size = read_1_byte (abfd, info_ptr); | |
4680 | info_ptr += 1; | |
4681 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
4682 | info_ptr += blk->size; | |
4683 | DW_BLOCK (attr) = blk; | |
4684 | break; | |
4685 | case DW_FORM_data1: | |
4686 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4687 | info_ptr += 1; | |
4688 | break; | |
4689 | case DW_FORM_flag: | |
4690 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4691 | info_ptr += 1; | |
4692 | break; | |
4693 | case DW_FORM_sdata: | |
4694 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
4695 | info_ptr += bytes_read; | |
4696 | break; | |
4697 | case DW_FORM_udata: | |
4698 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4699 | info_ptr += bytes_read; | |
4700 | break; | |
4701 | case DW_FORM_ref1: | |
4702 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
4703 | info_ptr += 1; | |
4704 | break; | |
4705 | case DW_FORM_ref2: | |
4706 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
4707 | info_ptr += 2; | |
4708 | break; | |
4709 | case DW_FORM_ref4: | |
4710 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
4711 | info_ptr += 4; | |
4712 | break; | |
613e1657 KB |
4713 | case DW_FORM_ref8: |
4714 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
4715 | info_ptr += 8; | |
4716 | break; | |
c906108c SS |
4717 | case DW_FORM_ref_udata: |
4718 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
4719 | info_ptr += bytes_read; | |
4720 | break; | |
c906108c | 4721 | case DW_FORM_indirect: |
a8329558 KW |
4722 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
4723 | info_ptr += bytes_read; | |
e7c27a73 | 4724 | info_ptr = read_attribute_value (attr, form, abfd, info_ptr, cu); |
a8329558 | 4725 | break; |
c906108c | 4726 | default: |
659b0389 ML |
4727 | error ("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]", |
4728 | dwarf_form_name (form), | |
4729 | bfd_get_filename (abfd)); | |
c906108c SS |
4730 | } |
4731 | return info_ptr; | |
4732 | } | |
4733 | ||
a8329558 KW |
4734 | /* Read an attribute described by an abbreviated attribute. */ |
4735 | ||
4736 | static char * | |
4737 | read_attribute (struct attribute *attr, struct attr_abbrev *abbrev, | |
e7c27a73 | 4738 | bfd *abfd, char *info_ptr, struct dwarf2_cu *cu) |
a8329558 KW |
4739 | { |
4740 | attr->name = abbrev->name; | |
e7c27a73 | 4741 | return read_attribute_value (attr, abbrev->form, abfd, info_ptr, cu); |
a8329558 KW |
4742 | } |
4743 | ||
c906108c SS |
4744 | /* read dwarf information from a buffer */ |
4745 | ||
4746 | static unsigned int | |
fba45db2 | 4747 | read_1_byte (bfd *abfd, char *buf) |
c906108c SS |
4748 | { |
4749 | return bfd_get_8 (abfd, (bfd_byte *) buf); | |
4750 | } | |
4751 | ||
4752 | static int | |
fba45db2 | 4753 | read_1_signed_byte (bfd *abfd, char *buf) |
c906108c SS |
4754 | { |
4755 | return bfd_get_signed_8 (abfd, (bfd_byte *) buf); | |
4756 | } | |
4757 | ||
4758 | static unsigned int | |
fba45db2 | 4759 | read_2_bytes (bfd *abfd, char *buf) |
c906108c SS |
4760 | { |
4761 | return bfd_get_16 (abfd, (bfd_byte *) buf); | |
4762 | } | |
4763 | ||
4764 | static int | |
fba45db2 | 4765 | read_2_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
4766 | { |
4767 | return bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
4768 | } | |
4769 | ||
4770 | static unsigned int | |
fba45db2 | 4771 | read_4_bytes (bfd *abfd, char *buf) |
c906108c SS |
4772 | { |
4773 | return bfd_get_32 (abfd, (bfd_byte *) buf); | |
4774 | } | |
4775 | ||
4776 | static int | |
fba45db2 | 4777 | read_4_signed_bytes (bfd *abfd, char *buf) |
c906108c SS |
4778 | { |
4779 | return bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
4780 | } | |
4781 | ||
ce5d95e1 | 4782 | static unsigned long |
fba45db2 | 4783 | read_8_bytes (bfd *abfd, char *buf) |
c906108c SS |
4784 | { |
4785 | return bfd_get_64 (abfd, (bfd_byte *) buf); | |
4786 | } | |
4787 | ||
4788 | static CORE_ADDR | |
e7c27a73 | 4789 | read_address (bfd *abfd, char *buf, struct dwarf2_cu *cu, int *bytes_read) |
c906108c | 4790 | { |
e7c27a73 | 4791 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
4792 | CORE_ADDR retval = 0; |
4793 | ||
107d2387 | 4794 | if (cu_header->signed_addr_p) |
c906108c | 4795 | { |
107d2387 AC |
4796 | switch (cu_header->addr_size) |
4797 | { | |
4798 | case 2: | |
4799 | retval = bfd_get_signed_16 (abfd, (bfd_byte *) buf); | |
4800 | break; | |
4801 | case 4: | |
4802 | retval = bfd_get_signed_32 (abfd, (bfd_byte *) buf); | |
4803 | break; | |
4804 | case 8: | |
4805 | retval = bfd_get_signed_64 (abfd, (bfd_byte *) buf); | |
4806 | break; | |
4807 | default: | |
8e65ff28 | 4808 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
4809 | "read_address: bad switch, signed [in module %s]", |
4810 | bfd_get_filename (abfd)); | |
107d2387 AC |
4811 | } |
4812 | } | |
4813 | else | |
4814 | { | |
4815 | switch (cu_header->addr_size) | |
4816 | { | |
4817 | case 2: | |
4818 | retval = bfd_get_16 (abfd, (bfd_byte *) buf); | |
4819 | break; | |
4820 | case 4: | |
4821 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
4822 | break; | |
4823 | case 8: | |
4824 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
4825 | break; | |
4826 | default: | |
8e65ff28 | 4827 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
4828 | "read_address: bad switch, unsigned [in module %s]", |
4829 | bfd_get_filename (abfd)); | |
107d2387 | 4830 | } |
c906108c | 4831 | } |
64367e0a | 4832 | |
107d2387 AC |
4833 | *bytes_read = cu_header->addr_size; |
4834 | return retval; | |
c906108c SS |
4835 | } |
4836 | ||
f7ef9339 | 4837 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
4838 | specification allows the initial length to take up either 4 bytes |
4839 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
4840 | bytes describe the length and all offsets will be 8 bytes in length | |
4841 | instead of 4. | |
4842 | ||
f7ef9339 KB |
4843 | An older, non-standard 64-bit format is also handled by this |
4844 | function. The older format in question stores the initial length | |
4845 | as an 8-byte quantity without an escape value. Lengths greater | |
4846 | than 2^32 aren't very common which means that the initial 4 bytes | |
4847 | is almost always zero. Since a length value of zero doesn't make | |
4848 | sense for the 32-bit format, this initial zero can be considered to | |
4849 | be an escape value which indicates the presence of the older 64-bit | |
4850 | format. As written, the code can't detect (old format) lengths | |
4851 | greater than 4GB. If it becomes necessary to handle lengths somewhat | |
4852 | larger than 4GB, we could allow other small values (such as the | |
4853 | non-sensical values of 1, 2, and 3) to also be used as escape values | |
4854 | indicating the presence of the old format. | |
4855 | ||
613e1657 KB |
4856 | The value returned via bytes_read should be used to increment |
4857 | the relevant pointer after calling read_initial_length(). | |
4858 | ||
4859 | As a side effect, this function sets the fields initial_length_size | |
4860 | and offset_size in cu_header to the values appropriate for the | |
4861 | length field. (The format of the initial length field determines | |
4862 | the width of file offsets to be fetched later with fetch_offset().) | |
4863 | ||
4864 | [ Note: read_initial_length() and read_offset() are based on the | |
4865 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 4866 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
4867 | from: |
4868 | ||
f7ef9339 | 4869 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
613e1657 KB |
4870 | |
4871 | This document is only a draft and is subject to change. (So beware.) | |
4872 | ||
f7ef9339 KB |
4873 | Details regarding the older, non-standard 64-bit format were |
4874 | determined empirically by examining 64-bit ELF files produced | |
4875 | by the SGI toolchain on an IRIX 6.5 machine. | |
4876 | ||
4877 | - Kevin, July 16, 2002 | |
613e1657 KB |
4878 | ] */ |
4879 | ||
4880 | static LONGEST | |
4881 | read_initial_length (bfd *abfd, char *buf, struct comp_unit_head *cu_header, | |
4882 | int *bytes_read) | |
4883 | { | |
4884 | LONGEST retval = 0; | |
4885 | ||
4886 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
4887 | ||
4888 | if (retval == 0xffffffff) | |
4889 | { | |
4890 | retval = bfd_get_64 (abfd, (bfd_byte *) buf + 4); | |
4891 | *bytes_read = 12; | |
4892 | if (cu_header != NULL) | |
4893 | { | |
4894 | cu_header->initial_length_size = 12; | |
4895 | cu_header->offset_size = 8; | |
4896 | } | |
4897 | } | |
f7ef9339 KB |
4898 | else if (retval == 0) |
4899 | { | |
4900 | /* Handle (non-standard) 64-bit DWARF2 formats such as that used | |
4901 | by IRIX. */ | |
4902 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
4903 | *bytes_read = 8; | |
4904 | if (cu_header != NULL) | |
4905 | { | |
4906 | cu_header->initial_length_size = 8; | |
4907 | cu_header->offset_size = 8; | |
4908 | } | |
4909 | } | |
613e1657 KB |
4910 | else |
4911 | { | |
4912 | *bytes_read = 4; | |
4913 | if (cu_header != NULL) | |
4914 | { | |
4915 | cu_header->initial_length_size = 4; | |
4916 | cu_header->offset_size = 4; | |
4917 | } | |
4918 | } | |
4919 | ||
4920 | return retval; | |
4921 | } | |
4922 | ||
4923 | /* Read an offset from the data stream. The size of the offset is | |
4924 | given by cu_header->offset_size. */ | |
4925 | ||
4926 | static LONGEST | |
4927 | read_offset (bfd *abfd, char *buf, const struct comp_unit_head *cu_header, | |
4928 | int *bytes_read) | |
4929 | { | |
4930 | LONGEST retval = 0; | |
4931 | ||
4932 | switch (cu_header->offset_size) | |
4933 | { | |
4934 | case 4: | |
4935 | retval = bfd_get_32 (abfd, (bfd_byte *) buf); | |
4936 | *bytes_read = 4; | |
4937 | break; | |
4938 | case 8: | |
4939 | retval = bfd_get_64 (abfd, (bfd_byte *) buf); | |
4940 | *bytes_read = 8; | |
4941 | break; | |
4942 | default: | |
8e65ff28 | 4943 | internal_error (__FILE__, __LINE__, |
659b0389 ML |
4944 | "read_offset: bad switch [in module %s]", |
4945 | bfd_get_filename (abfd)); | |
613e1657 KB |
4946 | } |
4947 | ||
4948 | return retval; | |
4949 | } | |
4950 | ||
c906108c | 4951 | static char * |
fba45db2 | 4952 | read_n_bytes (bfd *abfd, char *buf, unsigned int size) |
c906108c SS |
4953 | { |
4954 | /* If the size of a host char is 8 bits, we can return a pointer | |
4955 | to the buffer, otherwise we have to copy the data to a buffer | |
4956 | allocated on the temporary obstack. */ | |
4bdf3d34 | 4957 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 4958 | return buf; |
c906108c SS |
4959 | } |
4960 | ||
4961 | static char * | |
fba45db2 | 4962 | read_string (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c SS |
4963 | { |
4964 | /* If the size of a host char is 8 bits, we can return a pointer | |
4965 | to the string, otherwise we have to copy the string to a buffer | |
4966 | allocated on the temporary obstack. */ | |
4bdf3d34 | 4967 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
4968 | if (*buf == '\0') |
4969 | { | |
4970 | *bytes_read_ptr = 1; | |
4971 | return NULL; | |
4972 | } | |
4973 | *bytes_read_ptr = strlen (buf) + 1; | |
4974 | return buf; | |
4bdf3d34 JJ |
4975 | } |
4976 | ||
4977 | static char * | |
4978 | read_indirect_string (bfd *abfd, char *buf, | |
4979 | const struct comp_unit_head *cu_header, | |
4980 | unsigned int *bytes_read_ptr) | |
4981 | { | |
4982 | LONGEST str_offset = read_offset (abfd, buf, cu_header, | |
4983 | (int *) bytes_read_ptr); | |
c906108c | 4984 | |
6502dd73 | 4985 | if (dwarf2_per_objfile->str_buffer == NULL) |
c906108c | 4986 | { |
659b0389 ML |
4987 | error ("DW_FORM_strp used without .debug_str section [in module %s]", |
4988 | bfd_get_filename (abfd)); | |
4bdf3d34 | 4989 | return NULL; |
c906108c | 4990 | } |
6502dd73 | 4991 | if (str_offset >= dwarf2_per_objfile->str_size) |
c906108c | 4992 | { |
659b0389 ML |
4993 | error ("DW_FORM_strp pointing outside of .debug_str section [in module %s]", |
4994 | bfd_get_filename (abfd)); | |
c906108c SS |
4995 | return NULL; |
4996 | } | |
4bdf3d34 | 4997 | gdb_assert (HOST_CHAR_BIT == 8); |
6502dd73 | 4998 | if (dwarf2_per_objfile->str_buffer[str_offset] == '\0') |
4bdf3d34 | 4999 | return NULL; |
6502dd73 | 5000 | return dwarf2_per_objfile->str_buffer + str_offset; |
c906108c SS |
5001 | } |
5002 | ||
ce5d95e1 | 5003 | static unsigned long |
fba45db2 | 5004 | read_unsigned_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 5005 | { |
ce5d95e1 JB |
5006 | unsigned long result; |
5007 | unsigned int num_read; | |
c906108c SS |
5008 | int i, shift; |
5009 | unsigned char byte; | |
5010 | ||
5011 | result = 0; | |
5012 | shift = 0; | |
5013 | num_read = 0; | |
5014 | i = 0; | |
5015 | while (1) | |
5016 | { | |
5017 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
5018 | buf++; | |
5019 | num_read++; | |
ce5d95e1 | 5020 | result |= ((unsigned long)(byte & 127) << shift); |
c906108c SS |
5021 | if ((byte & 128) == 0) |
5022 | { | |
5023 | break; | |
5024 | } | |
5025 | shift += 7; | |
5026 | } | |
5027 | *bytes_read_ptr = num_read; | |
5028 | return result; | |
5029 | } | |
5030 | ||
ce5d95e1 | 5031 | static long |
fba45db2 | 5032 | read_signed_leb128 (bfd *abfd, char *buf, unsigned int *bytes_read_ptr) |
c906108c | 5033 | { |
ce5d95e1 | 5034 | long result; |
c906108c SS |
5035 | int i, shift, size, num_read; |
5036 | unsigned char byte; | |
5037 | ||
5038 | result = 0; | |
5039 | shift = 0; | |
5040 | size = 32; | |
5041 | num_read = 0; | |
5042 | i = 0; | |
5043 | while (1) | |
5044 | { | |
5045 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
5046 | buf++; | |
5047 | num_read++; | |
ce5d95e1 | 5048 | result |= ((long)(byte & 127) << shift); |
c906108c SS |
5049 | shift += 7; |
5050 | if ((byte & 128) == 0) | |
5051 | { | |
5052 | break; | |
5053 | } | |
5054 | } | |
5055 | if ((shift < size) && (byte & 0x40)) | |
5056 | { | |
5057 | result |= -(1 << shift); | |
5058 | } | |
5059 | *bytes_read_ptr = num_read; | |
5060 | return result; | |
5061 | } | |
5062 | ||
4bb7a0a7 DJ |
5063 | /* Return a pointer to just past the end of an LEB128 number in BUF. */ |
5064 | ||
5065 | static char * | |
5066 | skip_leb128 (bfd *abfd, char *buf) | |
5067 | { | |
5068 | int byte; | |
5069 | ||
5070 | while (1) | |
5071 | { | |
5072 | byte = bfd_get_8 (abfd, (bfd_byte *) buf); | |
5073 | buf++; | |
5074 | if ((byte & 128) == 0) | |
5075 | return buf; | |
5076 | } | |
5077 | } | |
5078 | ||
c906108c | 5079 | static void |
e142c38c | 5080 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
5081 | { |
5082 | switch (lang) | |
5083 | { | |
5084 | case DW_LANG_C89: | |
5085 | case DW_LANG_C: | |
e142c38c | 5086 | cu->language = language_c; |
c906108c SS |
5087 | break; |
5088 | case DW_LANG_C_plus_plus: | |
e142c38c | 5089 | cu->language = language_cplus; |
c906108c SS |
5090 | break; |
5091 | case DW_LANG_Fortran77: | |
5092 | case DW_LANG_Fortran90: | |
b21b22e0 | 5093 | case DW_LANG_Fortran95: |
e142c38c | 5094 | cu->language = language_fortran; |
c906108c SS |
5095 | break; |
5096 | case DW_LANG_Mips_Assembler: | |
e142c38c | 5097 | cu->language = language_asm; |
c906108c | 5098 | break; |
bebd888e | 5099 | case DW_LANG_Java: |
e142c38c | 5100 | cu->language = language_java; |
bebd888e | 5101 | break; |
c906108c | 5102 | case DW_LANG_Ada83: |
8aaf0b47 | 5103 | case DW_LANG_Ada95: |
c906108c SS |
5104 | case DW_LANG_Cobol74: |
5105 | case DW_LANG_Cobol85: | |
5106 | case DW_LANG_Pascal83: | |
5107 | case DW_LANG_Modula2: | |
5108 | default: | |
e142c38c | 5109 | cu->language = language_minimal; |
c906108c SS |
5110 | break; |
5111 | } | |
e142c38c | 5112 | cu->language_defn = language_def (cu->language); |
c906108c SS |
5113 | } |
5114 | ||
5115 | /* Return the named attribute or NULL if not there. */ | |
5116 | ||
5117 | static struct attribute * | |
e142c38c | 5118 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c SS |
5119 | { |
5120 | unsigned int i; | |
5121 | struct attribute *spec = NULL; | |
5122 | ||
5123 | for (i = 0; i < die->num_attrs; ++i) | |
5124 | { | |
5125 | if (die->attrs[i].name == name) | |
5126 | { | |
5127 | return &die->attrs[i]; | |
5128 | } | |
5129 | if (die->attrs[i].name == DW_AT_specification | |
5130 | || die->attrs[i].name == DW_AT_abstract_origin) | |
5131 | spec = &die->attrs[i]; | |
5132 | } | |
5133 | if (spec) | |
5134 | { | |
5135 | struct die_info *ref_die = | |
e142c38c | 5136 | follow_die_ref (dwarf2_get_ref_die_offset (spec, cu)); |
c906108c SS |
5137 | |
5138 | if (ref_die) | |
e142c38c | 5139 | return dwarf2_attr (ref_die, name, cu); |
c906108c | 5140 | } |
c5aa993b | 5141 | |
c906108c SS |
5142 | return NULL; |
5143 | } | |
5144 | ||
fdc860a3 JB |
5145 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
5146 | and holds a non-zero value. */ | |
5147 | ||
5148 | static int | |
5149 | dwarf2_attribute_true_p (struct die_info *die, unsigned name, | |
5150 | struct dwarf2_cu *cu) | |
5151 | { | |
5152 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
5153 | ||
5154 | return (attr && DW_UNSND (attr)); | |
5155 | } | |
5156 | ||
3ca72b44 | 5157 | static int |
e142c38c | 5158 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 5159 | { |
fdc860a3 JB |
5160 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
5161 | which value is non-zero. However, we have to be careful of DIEs | |
5162 | with a DW_AT_specification attribute, because dwarf2_attribute_p() | |
5163 | follows this attribute, and therefore might cause us to find a | |
5164 | DW_AT_declaration attribute, but that belongs to a different DIE. */ | |
5165 | return (dwarf2_attribute_true_p (die, DW_AT_declaration, cu) | |
5166 | && ! dwarf2_attribute_true_p (die, DW_AT_specification, cu)); | |
3ca72b44 AC |
5167 | } |
5168 | ||
63d06c5c DC |
5169 | /* Return the die giving the specification for DIE, if there is |
5170 | one. */ | |
5171 | ||
5172 | static struct die_info * | |
e142c38c | 5173 | die_specification (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 5174 | { |
e142c38c | 5175 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, cu); |
63d06c5c DC |
5176 | |
5177 | if (spec_attr == NULL) | |
5178 | return NULL; | |
5179 | else | |
e142c38c | 5180 | return follow_die_ref (dwarf2_get_ref_die_offset (spec_attr, cu)); |
63d06c5c | 5181 | } |
c906108c | 5182 | |
debd256d JB |
5183 | /* Free the line_header structure *LH, and any arrays and strings it |
5184 | refers to. */ | |
5185 | static void | |
5186 | free_line_header (struct line_header *lh) | |
5187 | { | |
5188 | if (lh->standard_opcode_lengths) | |
a8bc7b56 | 5189 | xfree (lh->standard_opcode_lengths); |
debd256d JB |
5190 | |
5191 | /* Remember that all the lh->file_names[i].name pointers are | |
5192 | pointers into debug_line_buffer, and don't need to be freed. */ | |
5193 | if (lh->file_names) | |
a8bc7b56 | 5194 | xfree (lh->file_names); |
debd256d JB |
5195 | |
5196 | /* Similarly for the include directory names. */ | |
5197 | if (lh->include_dirs) | |
a8bc7b56 | 5198 | xfree (lh->include_dirs); |
debd256d | 5199 | |
a8bc7b56 | 5200 | xfree (lh); |
debd256d JB |
5201 | } |
5202 | ||
5203 | ||
5204 | /* Add an entry to LH's include directory table. */ | |
5205 | static void | |
5206 | add_include_dir (struct line_header *lh, char *include_dir) | |
c906108c | 5207 | { |
debd256d JB |
5208 | /* Grow the array if necessary. */ |
5209 | if (lh->include_dirs_size == 0) | |
c5aa993b | 5210 | { |
debd256d JB |
5211 | lh->include_dirs_size = 1; /* for testing */ |
5212 | lh->include_dirs = xmalloc (lh->include_dirs_size | |
5213 | * sizeof (*lh->include_dirs)); | |
5214 | } | |
5215 | else if (lh->num_include_dirs >= lh->include_dirs_size) | |
5216 | { | |
5217 | lh->include_dirs_size *= 2; | |
5218 | lh->include_dirs = xrealloc (lh->include_dirs, | |
5219 | (lh->include_dirs_size | |
5220 | * sizeof (*lh->include_dirs))); | |
c5aa993b | 5221 | } |
c906108c | 5222 | |
debd256d JB |
5223 | lh->include_dirs[lh->num_include_dirs++] = include_dir; |
5224 | } | |
5225 | ||
5226 | ||
5227 | /* Add an entry to LH's file name table. */ | |
5228 | static void | |
5229 | add_file_name (struct line_header *lh, | |
5230 | char *name, | |
5231 | unsigned int dir_index, | |
5232 | unsigned int mod_time, | |
5233 | unsigned int length) | |
5234 | { | |
5235 | struct file_entry *fe; | |
5236 | ||
5237 | /* Grow the array if necessary. */ | |
5238 | if (lh->file_names_size == 0) | |
5239 | { | |
5240 | lh->file_names_size = 1; /* for testing */ | |
5241 | lh->file_names = xmalloc (lh->file_names_size | |
5242 | * sizeof (*lh->file_names)); | |
5243 | } | |
5244 | else if (lh->num_file_names >= lh->file_names_size) | |
5245 | { | |
5246 | lh->file_names_size *= 2; | |
5247 | lh->file_names = xrealloc (lh->file_names, | |
5248 | (lh->file_names_size | |
5249 | * sizeof (*lh->file_names))); | |
5250 | } | |
5251 | ||
5252 | fe = &lh->file_names[lh->num_file_names++]; | |
5253 | fe->name = name; | |
5254 | fe->dir_index = dir_index; | |
5255 | fe->mod_time = mod_time; | |
5256 | fe->length = length; | |
5257 | } | |
5258 | ||
5259 | ||
5260 | /* Read the statement program header starting at OFFSET in | |
6502dd73 DJ |
5261 | .debug_line, according to the endianness of ABFD. Return a pointer |
5262 | to a struct line_header, allocated using xmalloc. | |
debd256d JB |
5263 | |
5264 | NOTE: the strings in the include directory and file name tables of | |
5265 | the returned object point into debug_line_buffer, and must not be | |
5266 | freed. */ | |
5267 | static struct line_header * | |
5268 | dwarf_decode_line_header (unsigned int offset, bfd *abfd, | |
e7c27a73 | 5269 | struct dwarf2_cu *cu) |
debd256d JB |
5270 | { |
5271 | struct cleanup *back_to; | |
5272 | struct line_header *lh; | |
5273 | char *line_ptr; | |
5274 | int bytes_read; | |
5275 | int i; | |
5276 | char *cur_dir, *cur_file; | |
5277 | ||
6502dd73 | 5278 | if (dwarf2_per_objfile->line_buffer == NULL) |
debd256d | 5279 | { |
4d3c2250 | 5280 | complaint (&symfile_complaints, "missing .debug_line section"); |
debd256d JB |
5281 | return 0; |
5282 | } | |
5283 | ||
5284 | /* Make sure that at least there's room for the total_length field. That | |
5285 | could be 12 bytes long, but we're just going to fudge that. */ | |
6502dd73 | 5286 | if (offset + 4 >= dwarf2_per_objfile->line_size) |
debd256d | 5287 | { |
4d3c2250 | 5288 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
5289 | return 0; |
5290 | } | |
5291 | ||
5292 | lh = xmalloc (sizeof (*lh)); | |
5293 | memset (lh, 0, sizeof (*lh)); | |
5294 | back_to = make_cleanup ((make_cleanup_ftype *) free_line_header, | |
5295 | (void *) lh); | |
5296 | ||
6502dd73 | 5297 | line_ptr = dwarf2_per_objfile->line_buffer + offset; |
debd256d JB |
5298 | |
5299 | /* read in the header */ | |
5300 | lh->total_length = read_initial_length (abfd, line_ptr, NULL, &bytes_read); | |
5301 | line_ptr += bytes_read; | |
6502dd73 DJ |
5302 | if (line_ptr + lh->total_length > (dwarf2_per_objfile->line_buffer |
5303 | + dwarf2_per_objfile->line_size)) | |
debd256d | 5304 | { |
4d3c2250 | 5305 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
5306 | return 0; |
5307 | } | |
5308 | lh->statement_program_end = line_ptr + lh->total_length; | |
5309 | lh->version = read_2_bytes (abfd, line_ptr); | |
5310 | line_ptr += 2; | |
e7c27a73 | 5311 | lh->header_length = read_offset (abfd, line_ptr, &cu->header, &bytes_read); |
debd256d JB |
5312 | line_ptr += bytes_read; |
5313 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); | |
5314 | line_ptr += 1; | |
5315 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); | |
5316 | line_ptr += 1; | |
5317 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
5318 | line_ptr += 1; | |
5319 | lh->line_range = read_1_byte (abfd, line_ptr); | |
5320 | line_ptr += 1; | |
5321 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
5322 | line_ptr += 1; | |
5323 | lh->standard_opcode_lengths | |
5324 | = (unsigned char *) xmalloc (lh->opcode_base * sizeof (unsigned char)); | |
5325 | ||
5326 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
5327 | for (i = 1; i < lh->opcode_base; ++i) | |
5328 | { | |
5329 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
5330 | line_ptr += 1; | |
5331 | } | |
5332 | ||
5333 | /* Read directory table */ | |
5334 | while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL) | |
5335 | { | |
5336 | line_ptr += bytes_read; | |
5337 | add_include_dir (lh, cur_dir); | |
5338 | } | |
5339 | line_ptr += bytes_read; | |
5340 | ||
5341 | /* Read file name table */ | |
5342 | while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL) | |
5343 | { | |
5344 | unsigned int dir_index, mod_time, length; | |
5345 | ||
5346 | line_ptr += bytes_read; | |
5347 | dir_index = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5348 | line_ptr += bytes_read; | |
5349 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5350 | line_ptr += bytes_read; | |
5351 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5352 | line_ptr += bytes_read; | |
5353 | ||
5354 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
5355 | } | |
5356 | line_ptr += bytes_read; | |
5357 | lh->statement_program_start = line_ptr; | |
5358 | ||
6502dd73 DJ |
5359 | if (line_ptr > (dwarf2_per_objfile->line_buffer |
5360 | + dwarf2_per_objfile->line_size)) | |
4d3c2250 KB |
5361 | complaint (&symfile_complaints, |
5362 | "line number info header doesn't fit in `.debug_line' section"); | |
debd256d JB |
5363 | |
5364 | discard_cleanups (back_to); | |
5365 | return lh; | |
5366 | } | |
c906108c | 5367 | |
5fb290d7 DJ |
5368 | /* This function exists to work around a bug in certain compilers |
5369 | (particularly GCC 2.95), in which the first line number marker of a | |
5370 | function does not show up until after the prologue, right before | |
5371 | the second line number marker. This function shifts ADDRESS down | |
5372 | to the beginning of the function if necessary, and is called on | |
5373 | addresses passed to record_line. */ | |
5374 | ||
5375 | static CORE_ADDR | |
e142c38c | 5376 | check_cu_functions (CORE_ADDR address, struct dwarf2_cu *cu) |
5fb290d7 DJ |
5377 | { |
5378 | struct function_range *fn; | |
5379 | ||
5380 | /* Find the function_range containing address. */ | |
e142c38c | 5381 | if (!cu->first_fn) |
5fb290d7 DJ |
5382 | return address; |
5383 | ||
e142c38c DJ |
5384 | if (!cu->cached_fn) |
5385 | cu->cached_fn = cu->first_fn; | |
5fb290d7 | 5386 | |
e142c38c | 5387 | fn = cu->cached_fn; |
5fb290d7 DJ |
5388 | while (fn) |
5389 | if (fn->lowpc <= address && fn->highpc > address) | |
5390 | goto found; | |
5391 | else | |
5392 | fn = fn->next; | |
5393 | ||
e142c38c DJ |
5394 | fn = cu->first_fn; |
5395 | while (fn && fn != cu->cached_fn) | |
5fb290d7 DJ |
5396 | if (fn->lowpc <= address && fn->highpc > address) |
5397 | goto found; | |
5398 | else | |
5399 | fn = fn->next; | |
5400 | ||
5401 | return address; | |
5402 | ||
5403 | found: | |
5404 | if (fn->seen_line) | |
5405 | return address; | |
5406 | if (address != fn->lowpc) | |
4d3c2250 KB |
5407 | complaint (&symfile_complaints, |
5408 | "misplaced first line number at 0x%lx for '%s'", | |
5409 | (unsigned long) address, fn->name); | |
5fb290d7 DJ |
5410 | fn->seen_line = 1; |
5411 | return fn->lowpc; | |
5412 | } | |
5413 | ||
debd256d JB |
5414 | /* Decode the line number information for the compilation unit whose |
5415 | line number info is at OFFSET in the .debug_line section. | |
5416 | The compilation directory of the file is passed in COMP_DIR. */ | |
5417 | ||
c906108c | 5418 | static void |
debd256d | 5419 | dwarf_decode_lines (struct line_header *lh, char *comp_dir, bfd *abfd, |
e7c27a73 | 5420 | struct dwarf2_cu *cu) |
c906108c SS |
5421 | { |
5422 | char *line_ptr; | |
5423 | char *line_end; | |
e7c27a73 | 5424 | unsigned int bytes_read; |
c906108c | 5425 | unsigned char op_code, extended_op, adj_opcode; |
e142c38c DJ |
5426 | CORE_ADDR baseaddr; |
5427 | struct objfile *objfile = cu->objfile; | |
5428 | ||
5429 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5430 | |
debd256d JB |
5431 | line_ptr = lh->statement_program_start; |
5432 | line_end = lh->statement_program_end; | |
c906108c SS |
5433 | |
5434 | /* Read the statement sequences until there's nothing left. */ | |
5435 | while (line_ptr < line_end) | |
5436 | { | |
5437 | /* state machine registers */ | |
5438 | CORE_ADDR address = 0; | |
5439 | unsigned int file = 1; | |
5440 | unsigned int line = 1; | |
5441 | unsigned int column = 0; | |
debd256d | 5442 | int is_stmt = lh->default_is_stmt; |
c906108c SS |
5443 | int basic_block = 0; |
5444 | int end_sequence = 0; | |
5445 | ||
5446 | /* Start a subfile for the current file of the state machine. */ | |
debd256d | 5447 | if (lh->num_file_names >= file) |
c906108c | 5448 | { |
debd256d JB |
5449 | /* lh->include_dirs and lh->file_names are 0-based, but the |
5450 | directory and file name numbers in the statement program | |
5451 | are 1-based. */ | |
5452 | struct file_entry *fe = &lh->file_names[file - 1]; | |
5453 | char *dir; | |
5454 | if (fe->dir_index) | |
5455 | dir = lh->include_dirs[fe->dir_index - 1]; | |
5456 | else | |
5457 | dir = comp_dir; | |
5458 | dwarf2_start_subfile (fe->name, dir); | |
c906108c SS |
5459 | } |
5460 | ||
5461 | /* Decode the table. */ | |
c5aa993b | 5462 | while (!end_sequence) |
c906108c SS |
5463 | { |
5464 | op_code = read_1_byte (abfd, line_ptr); | |
5465 | line_ptr += 1; | |
9aa1fe7e | 5466 | |
debd256d | 5467 | if (op_code >= lh->opcode_base) |
9aa1fe7e | 5468 | { /* Special operand. */ |
debd256d JB |
5469 | adj_opcode = op_code - lh->opcode_base; |
5470 | address += (adj_opcode / lh->line_range) | |
5471 | * lh->minimum_instruction_length; | |
5472 | line += lh->line_base + (adj_opcode % lh->line_range); | |
9aa1fe7e | 5473 | /* append row to matrix using current values */ |
ddf9f258 | 5474 | record_line (current_subfile, line, |
e142c38c | 5475 | check_cu_functions (address, cu)); |
9aa1fe7e GK |
5476 | basic_block = 1; |
5477 | } | |
5478 | else switch (op_code) | |
c906108c SS |
5479 | { |
5480 | case DW_LNS_extended_op: | |
5481 | line_ptr += 1; /* ignore length */ | |
5482 | extended_op = read_1_byte (abfd, line_ptr); | |
5483 | line_ptr += 1; | |
5484 | switch (extended_op) | |
5485 | { | |
5486 | case DW_LNE_end_sequence: | |
5487 | end_sequence = 1; | |
5fb290d7 | 5488 | record_line (current_subfile, 0, address); |
c906108c SS |
5489 | break; |
5490 | case DW_LNE_set_address: | |
e7c27a73 | 5491 | address = read_address (abfd, line_ptr, cu, &bytes_read); |
107d2387 AC |
5492 | line_ptr += bytes_read; |
5493 | address += baseaddr; | |
c906108c SS |
5494 | break; |
5495 | case DW_LNE_define_file: | |
debd256d JB |
5496 | { |
5497 | char *cur_file; | |
5498 | unsigned int dir_index, mod_time, length; | |
5499 | ||
5500 | cur_file = read_string (abfd, line_ptr, &bytes_read); | |
5501 | line_ptr += bytes_read; | |
5502 | dir_index = | |
5503 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5504 | line_ptr += bytes_read; | |
5505 | mod_time = | |
5506 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5507 | line_ptr += bytes_read; | |
5508 | length = | |
5509 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5510 | line_ptr += bytes_read; | |
5511 | add_file_name (lh, cur_file, dir_index, mod_time, length); | |
5512 | } | |
c906108c SS |
5513 | break; |
5514 | default: | |
4d3c2250 KB |
5515 | complaint (&symfile_complaints, |
5516 | "mangled .debug_line section"); | |
debd256d | 5517 | return; |
c906108c SS |
5518 | } |
5519 | break; | |
5520 | case DW_LNS_copy: | |
ddf9f258 | 5521 | record_line (current_subfile, line, |
e142c38c | 5522 | check_cu_functions (address, cu)); |
c906108c SS |
5523 | basic_block = 0; |
5524 | break; | |
5525 | case DW_LNS_advance_pc: | |
debd256d | 5526 | address += lh->minimum_instruction_length |
c906108c SS |
5527 | * read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
5528 | line_ptr += bytes_read; | |
5529 | break; | |
5530 | case DW_LNS_advance_line: | |
5531 | line += read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
5532 | line_ptr += bytes_read; | |
5533 | break; | |
5534 | case DW_LNS_set_file: | |
debd256d JB |
5535 | { |
5536 | /* lh->include_dirs and lh->file_names are 0-based, | |
5537 | but the directory and file name numbers in the | |
5538 | statement program are 1-based. */ | |
5539 | struct file_entry *fe; | |
5540 | char *dir; | |
5541 | file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5542 | line_ptr += bytes_read; | |
5543 | fe = &lh->file_names[file - 1]; | |
5544 | if (fe->dir_index) | |
5545 | dir = lh->include_dirs[fe->dir_index - 1]; | |
5546 | else | |
5547 | dir = comp_dir; | |
5548 | dwarf2_start_subfile (fe->name, dir); | |
5549 | } | |
c906108c SS |
5550 | break; |
5551 | case DW_LNS_set_column: | |
5552 | column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5553 | line_ptr += bytes_read; | |
5554 | break; | |
5555 | case DW_LNS_negate_stmt: | |
5556 | is_stmt = (!is_stmt); | |
5557 | break; | |
5558 | case DW_LNS_set_basic_block: | |
5559 | basic_block = 1; | |
5560 | break; | |
c2c6d25f JM |
5561 | /* Add to the address register of the state machine the |
5562 | address increment value corresponding to special opcode | |
5563 | 255. Ie, this value is scaled by the minimum instruction | |
5564 | length since special opcode 255 would have scaled the | |
5565 | the increment. */ | |
c906108c | 5566 | case DW_LNS_const_add_pc: |
debd256d JB |
5567 | address += (lh->minimum_instruction_length |
5568 | * ((255 - lh->opcode_base) / lh->line_range)); | |
c906108c SS |
5569 | break; |
5570 | case DW_LNS_fixed_advance_pc: | |
5571 | address += read_2_bytes (abfd, line_ptr); | |
5572 | line_ptr += 2; | |
5573 | break; | |
9aa1fe7e GK |
5574 | default: |
5575 | { /* Unknown standard opcode, ignore it. */ | |
5576 | int i; | |
debd256d | 5577 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
5578 | { |
5579 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
5580 | line_ptr += bytes_read; | |
5581 | } | |
5582 | } | |
c906108c SS |
5583 | } |
5584 | } | |
5585 | } | |
c906108c SS |
5586 | } |
5587 | ||
5588 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
5589 | DIRNAME the name of the source directory which contains FILENAME | |
5590 | or NULL if not known. | |
5591 | This routine tries to keep line numbers from identical absolute and | |
5592 | relative file names in a common subfile. | |
5593 | ||
5594 | Using the `list' example from the GDB testsuite, which resides in | |
5595 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
5596 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
5597 | ||
c5aa993b JM |
5598 | DW_AT_name: /srcdir/list0.c |
5599 | DW_AT_comp_dir: /compdir | |
357e46e7 | 5600 | files.files[0].name: list0.h |
c5aa993b | 5601 | files.files[0].dir: /srcdir |
357e46e7 | 5602 | files.files[1].name: list0.c |
c5aa993b | 5603 | files.files[1].dir: /srcdir |
c906108c SS |
5604 | |
5605 | The line number information for list0.c has to end up in a single | |
5606 | subfile, so that `break /srcdir/list0.c:1' works as expected. */ | |
5607 | ||
5608 | static void | |
fba45db2 | 5609 | dwarf2_start_subfile (char *filename, char *dirname) |
c906108c SS |
5610 | { |
5611 | /* If the filename isn't absolute, try to match an existing subfile | |
5612 | with the full pathname. */ | |
5613 | ||
d5166ae1 | 5614 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
c906108c SS |
5615 | { |
5616 | struct subfile *subfile; | |
5617 | char *fullname = concat (dirname, "/", filename, NULL); | |
5618 | ||
5619 | for (subfile = subfiles; subfile; subfile = subfile->next) | |
5620 | { | |
d5166ae1 | 5621 | if (FILENAME_CMP (subfile->name, fullname) == 0) |
c906108c SS |
5622 | { |
5623 | current_subfile = subfile; | |
b8c9b27d | 5624 | xfree (fullname); |
c906108c SS |
5625 | return; |
5626 | } | |
5627 | } | |
b8c9b27d | 5628 | xfree (fullname); |
c906108c SS |
5629 | } |
5630 | start_subfile (filename, dirname); | |
5631 | } | |
5632 | ||
4c2df51b DJ |
5633 | static void |
5634 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 5635 | struct dwarf2_cu *cu) |
4c2df51b | 5636 | { |
e7c27a73 DJ |
5637 | struct objfile *objfile = cu->objfile; |
5638 | struct comp_unit_head *cu_header = &cu->header; | |
5639 | ||
4c2df51b DJ |
5640 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
5641 | code here to turn a symbol with DW_AT_external and a | |
5642 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
5643 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
5644 | with some versions of binutils) where shared libraries could have | |
5645 | relocations against symbols in their debug information - the | |
5646 | minimal symbol would have the right address, but the debug info | |
5647 | would not. It's no longer necessary, because we will explicitly | |
5648 | apply relocations when we read in the debug information now. */ | |
5649 | ||
5650 | /* A DW_AT_location attribute with no contents indicates that a | |
5651 | variable has been optimized away. */ | |
5652 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
5653 | { | |
5654 | SYMBOL_CLASS (sym) = LOC_OPTIMIZED_OUT; | |
5655 | return; | |
5656 | } | |
5657 | ||
5658 | /* Handle one degenerate form of location expression specially, to | |
5659 | preserve GDB's previous behavior when section offsets are | |
5660 | specified. If this is just a DW_OP_addr then mark this symbol | |
5661 | as LOC_STATIC. */ | |
5662 | ||
5663 | if (attr_form_is_block (attr) | |
5664 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size | |
5665 | && DW_BLOCK (attr)->data[0] == DW_OP_addr) | |
5666 | { | |
5667 | int dummy; | |
5668 | ||
5669 | SYMBOL_VALUE_ADDRESS (sym) = | |
e7c27a73 | 5670 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); |
4c2df51b DJ |
5671 | fixup_symbol_section (sym, objfile); |
5672 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
5673 | SYMBOL_SECTION (sym)); | |
5674 | SYMBOL_CLASS (sym) = LOC_STATIC; | |
5675 | return; | |
5676 | } | |
5677 | ||
5678 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
5679 | expression evaluator, and use LOC_COMPUTED only when necessary | |
5680 | (i.e. when the value of a register or memory location is | |
5681 | referenced, or a thread-local block, etc.). Then again, it might | |
5682 | not be worthwhile. I'm assuming that it isn't unless performance | |
5683 | or memory numbers show me otherwise. */ | |
5684 | ||
e7c27a73 | 5685 | dwarf2_symbol_mark_computed (attr, sym, cu); |
4c2df51b DJ |
5686 | SYMBOL_CLASS (sym) = LOC_COMPUTED; |
5687 | } | |
5688 | ||
c906108c SS |
5689 | /* Given a pointer to a DWARF information entry, figure out if we need |
5690 | to make a symbol table entry for it, and if so, create a new entry | |
5691 | and return a pointer to it. | |
5692 | If TYPE is NULL, determine symbol type from the die, otherwise | |
2df3850c | 5693 | used the passed type. */ |
c906108c SS |
5694 | |
5695 | static struct symbol * | |
e7c27a73 | 5696 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
c906108c | 5697 | { |
e7c27a73 | 5698 | struct objfile *objfile = cu->objfile; |
c906108c SS |
5699 | struct symbol *sym = NULL; |
5700 | char *name; | |
5701 | struct attribute *attr = NULL; | |
5702 | struct attribute *attr2 = NULL; | |
e142c38c DJ |
5703 | CORE_ADDR baseaddr; |
5704 | ||
5705 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 5706 | |
5c4e30ca | 5707 | if (die->tag != DW_TAG_namespace) |
e142c38c | 5708 | name = dwarf2_linkage_name (die, cu); |
5c4e30ca DC |
5709 | else |
5710 | name = TYPE_NAME (type); | |
5711 | ||
c906108c SS |
5712 | if (name) |
5713 | { | |
4a146b47 | 5714 | sym = (struct symbol *) obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
5715 | sizeof (struct symbol)); |
5716 | OBJSTAT (objfile, n_syms++); | |
5717 | memset (sym, 0, sizeof (struct symbol)); | |
2de7ced7 DJ |
5718 | |
5719 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
e142c38c | 5720 | SYMBOL_LANGUAGE (sym) = cu->language; |
2de7ced7 | 5721 | SYMBOL_SET_NAMES (sym, name, strlen (name), objfile); |
c906108c SS |
5722 | |
5723 | /* Default assumptions. | |
c5aa993b | 5724 | Use the passed type or decode it from the die. */ |
176620f1 | 5725 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
c906108c SS |
5726 | SYMBOL_CLASS (sym) = LOC_STATIC; |
5727 | if (type != NULL) | |
5728 | SYMBOL_TYPE (sym) = type; | |
5729 | else | |
e7c27a73 | 5730 | SYMBOL_TYPE (sym) = die_type (die, cu); |
e142c38c | 5731 | attr = dwarf2_attr (die, DW_AT_decl_line, cu); |
c906108c SS |
5732 | if (attr) |
5733 | { | |
5734 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
5735 | } | |
c906108c SS |
5736 | switch (die->tag) |
5737 | { | |
5738 | case DW_TAG_label: | |
e142c38c | 5739 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c SS |
5740 | if (attr) |
5741 | { | |
5742 | SYMBOL_VALUE_ADDRESS (sym) = DW_ADDR (attr) + baseaddr; | |
5743 | } | |
5744 | SYMBOL_CLASS (sym) = LOC_LABEL; | |
5745 | break; | |
5746 | case DW_TAG_subprogram: | |
5747 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
5748 | finish_block. */ | |
5749 | SYMBOL_CLASS (sym) = LOC_BLOCK; | |
e142c38c | 5750 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
5751 | if (attr2 && (DW_UNSND (attr2) != 0)) |
5752 | { | |
5753 | add_symbol_to_list (sym, &global_symbols); | |
5754 | } | |
5755 | else | |
5756 | { | |
e142c38c | 5757 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5758 | } |
5759 | break; | |
5760 | case DW_TAG_variable: | |
5761 | /* Compilation with minimal debug info may result in variables | |
5762 | with missing type entries. Change the misleading `void' type | |
5763 | to something sensible. */ | |
5764 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) | |
5765 | SYMBOL_TYPE (sym) = init_type (TYPE_CODE_INT, | |
5766 | TARGET_INT_BIT / HOST_CHAR_BIT, 0, | |
5767 | "<variable, no debug info>", | |
5768 | objfile); | |
e142c38c | 5769 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5770 | if (attr) |
5771 | { | |
e7c27a73 | 5772 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 5773 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c SS |
5774 | if (attr2 && (DW_UNSND (attr2) != 0)) |
5775 | add_symbol_to_list (sym, &global_symbols); | |
5776 | else | |
e142c38c | 5777 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5778 | break; |
5779 | } | |
e142c38c | 5780 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
5781 | if (attr) |
5782 | { | |
e7c27a73 | 5783 | var_decode_location (attr, sym, cu); |
e142c38c | 5784 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 5785 | if (attr2 && (DW_UNSND (attr2) != 0)) |
4c2df51b | 5786 | add_symbol_to_list (sym, &global_symbols); |
c906108c | 5787 | else |
e142c38c | 5788 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5789 | } |
5790 | else | |
5791 | { | |
5792 | /* We do not know the address of this symbol. | |
c5aa993b JM |
5793 | If it is an external symbol and we have type information |
5794 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
5795 | The address of the variable will then be determined from | |
5796 | the minimal symbol table whenever the variable is | |
5797 | referenced. */ | |
e142c38c | 5798 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
c906108c | 5799 | if (attr2 && (DW_UNSND (attr2) != 0) |
e142c38c | 5800 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) |
c906108c SS |
5801 | { |
5802 | SYMBOL_CLASS (sym) = LOC_UNRESOLVED; | |
5803 | add_symbol_to_list (sym, &global_symbols); | |
5804 | } | |
5805 | } | |
5806 | break; | |
5807 | case DW_TAG_formal_parameter: | |
e142c38c | 5808 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
5809 | if (attr) |
5810 | { | |
e7c27a73 | 5811 | var_decode_location (attr, sym, cu); |
7cf6e574 DJ |
5812 | /* FIXME drow/2003-07-31: Is LOC_COMPUTED_ARG necessary? */ |
5813 | if (SYMBOL_CLASS (sym) == LOC_COMPUTED) | |
5814 | SYMBOL_CLASS (sym) = LOC_COMPUTED_ARG; | |
c906108c | 5815 | } |
e142c38c | 5816 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5817 | if (attr) |
5818 | { | |
e7c27a73 | 5819 | dwarf2_const_value (attr, sym, cu); |
c906108c | 5820 | } |
e142c38c | 5821 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5822 | break; |
5823 | case DW_TAG_unspecified_parameters: | |
5824 | /* From varargs functions; gdb doesn't seem to have any | |
5825 | interest in this information, so just ignore it for now. | |
5826 | (FIXME?) */ | |
5827 | break; | |
5828 | case DW_TAG_class_type: | |
5829 | case DW_TAG_structure_type: | |
5830 | case DW_TAG_union_type: | |
5831 | case DW_TAG_enumeration_type: | |
5832 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
176620f1 | 5833 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 5834 | |
63d06c5c DC |
5835 | /* Make sure that the symbol includes appropriate enclosing |
5836 | classes/namespaces in its name. These are calculated in | |
134d01f1 | 5837 | read_structure_type, and the correct name is saved in |
63d06c5c DC |
5838 | the type. */ |
5839 | ||
e142c38c | 5840 | if (cu->language == language_cplus) |
c906108c | 5841 | { |
63d06c5c DC |
5842 | struct type *type = SYMBOL_TYPE (sym); |
5843 | ||
5844 | if (TYPE_TAG_NAME (type) != NULL) | |
5845 | { | |
5846 | /* FIXME: carlton/2003-11-10: Should this use | |
5847 | SYMBOL_SET_NAMES instead? (The same problem also | |
d8151005 DJ |
5848 | arises further down in this function.) */ |
5849 | /* The type's name is already allocated along with | |
5850 | this objfile, so we don't need to duplicate it | |
5851 | for the symbol. */ | |
5852 | SYMBOL_LINKAGE_NAME (sym) = TYPE_TAG_NAME (type); | |
63d06c5c | 5853 | } |
c906108c | 5854 | } |
63d06c5c DC |
5855 | |
5856 | { | |
5857 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't | |
5858 | really ever be static objects: otherwise, if you try | |
5859 | to, say, break of a class's method and you're in a file | |
5860 | which doesn't mention that class, it won't work unless | |
5861 | the check for all static symbols in lookup_symbol_aux | |
5862 | saves you. See the OtherFileClass tests in | |
5863 | gdb.c++/namespace.exp. */ | |
5864 | ||
5865 | struct pending **list_to_add; | |
5866 | ||
e142c38c DJ |
5867 | list_to_add = (cu->list_in_scope == &file_symbols |
5868 | && cu->language == language_cplus | |
5869 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c DC |
5870 | |
5871 | add_symbol_to_list (sym, list_to_add); | |
5872 | ||
5873 | /* The semantics of C++ state that "struct foo { ... }" also | |
5874 | defines a typedef for "foo". Synthesize a typedef symbol so | |
5875 | that "ptype foo" works as expected. */ | |
e142c38c | 5876 | if (cu->language == language_cplus) |
63d06c5c DC |
5877 | { |
5878 | struct symbol *typedef_sym = (struct symbol *) | |
4a146b47 | 5879 | obstack_alloc (&objfile->objfile_obstack, |
63d06c5c DC |
5880 | sizeof (struct symbol)); |
5881 | *typedef_sym = *sym; | |
5882 | SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN; | |
d8151005 DJ |
5883 | /* The symbol's name is already allocated along with |
5884 | this objfile, so we don't need to duplicate it for | |
5885 | the type. */ | |
63d06c5c | 5886 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) |
d8151005 | 5887 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_NATURAL_NAME (sym); |
63d06c5c DC |
5888 | add_symbol_to_list (typedef_sym, list_to_add); |
5889 | } | |
5890 | } | |
c906108c SS |
5891 | break; |
5892 | case DW_TAG_typedef: | |
63d06c5c DC |
5893 | if (processing_has_namespace_info |
5894 | && processing_current_prefix[0] != '\0') | |
5895 | { | |
4a146b47 | 5896 | SYMBOL_LINKAGE_NAME (sym) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
5897 | processing_current_prefix, |
5898 | "::", | |
5899 | name); | |
5900 | } | |
5901 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
5902 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; | |
e142c38c | 5903 | add_symbol_to_list (sym, cu->list_in_scope); |
63d06c5c | 5904 | break; |
c906108c | 5905 | case DW_TAG_base_type: |
a02abb62 | 5906 | case DW_TAG_subrange_type: |
c906108c | 5907 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; |
176620f1 | 5908 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e142c38c | 5909 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
5910 | break; |
5911 | case DW_TAG_enumerator: | |
63d06c5c DC |
5912 | if (processing_has_namespace_info |
5913 | && processing_current_prefix[0] != '\0') | |
5914 | { | |
4a146b47 | 5915 | SYMBOL_LINKAGE_NAME (sym) = obconcat (&objfile->objfile_obstack, |
63d06c5c DC |
5916 | processing_current_prefix, |
5917 | "::", | |
5918 | name); | |
5919 | } | |
e142c38c | 5920 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
5921 | if (attr) |
5922 | { | |
e7c27a73 | 5923 | dwarf2_const_value (attr, sym, cu); |
c906108c | 5924 | } |
63d06c5c DC |
5925 | { |
5926 | /* NOTE: carlton/2003-11-10: See comment above in the | |
5927 | DW_TAG_class_type, etc. block. */ | |
5928 | ||
5929 | struct pending **list_to_add; | |
5930 | ||
e142c38c DJ |
5931 | list_to_add = (cu->list_in_scope == &file_symbols |
5932 | && cu->language == language_cplus | |
5933 | ? &global_symbols : cu->list_in_scope); | |
63d06c5c DC |
5934 | |
5935 | add_symbol_to_list (sym, list_to_add); | |
5936 | } | |
c906108c | 5937 | break; |
5c4e30ca DC |
5938 | case DW_TAG_namespace: |
5939 | SYMBOL_CLASS (sym) = LOC_TYPEDEF; | |
5940 | add_symbol_to_list (sym, &global_symbols); | |
5941 | break; | |
c906108c SS |
5942 | default: |
5943 | /* Not a tag we recognize. Hopefully we aren't processing | |
5944 | trash data, but since we must specifically ignore things | |
5945 | we don't recognize, there is nothing else we should do at | |
5946 | this point. */ | |
4d3c2250 KB |
5947 | complaint (&symfile_complaints, "unsupported tag: '%s'", |
5948 | dwarf_tag_name (die->tag)); | |
c906108c SS |
5949 | break; |
5950 | } | |
5951 | } | |
5952 | return (sym); | |
5953 | } | |
5954 | ||
5955 | /* Copy constant value from an attribute to a symbol. */ | |
5956 | ||
5957 | static void | |
107d2387 | 5958 | dwarf2_const_value (struct attribute *attr, struct symbol *sym, |
e7c27a73 | 5959 | struct dwarf2_cu *cu) |
c906108c | 5960 | { |
e7c27a73 DJ |
5961 | struct objfile *objfile = cu->objfile; |
5962 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
5963 | struct dwarf_block *blk; |
5964 | ||
5965 | switch (attr->form) | |
5966 | { | |
5967 | case DW_FORM_addr: | |
107d2387 | 5968 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != cu_header->addr_size) |
22abf04a | 5969 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
5970 | cu_header->addr_size, |
5971 | TYPE_LENGTH (SYMBOL_TYPE | |
5972 | (sym))); | |
c906108c | 5973 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 5974 | obstack_alloc (&objfile->objfile_obstack, cu_header->addr_size); |
fbd9dcd3 AC |
5975 | /* NOTE: cagney/2003-05-09: In-lined store_address call with |
5976 | it's body - store_unsigned_integer. */ | |
5977 | store_unsigned_integer (SYMBOL_VALUE_BYTES (sym), cu_header->addr_size, | |
5978 | DW_ADDR (attr)); | |
c906108c SS |
5979 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; |
5980 | break; | |
5981 | case DW_FORM_block1: | |
5982 | case DW_FORM_block2: | |
5983 | case DW_FORM_block4: | |
5984 | case DW_FORM_block: | |
5985 | blk = DW_BLOCK (attr); | |
5986 | if (TYPE_LENGTH (SYMBOL_TYPE (sym)) != blk->size) | |
22abf04a | 5987 | dwarf2_const_value_length_mismatch_complaint (DEPRECATED_SYMBOL_NAME (sym), |
4d3c2250 KB |
5988 | blk->size, |
5989 | TYPE_LENGTH (SYMBOL_TYPE | |
5990 | (sym))); | |
c906108c | 5991 | SYMBOL_VALUE_BYTES (sym) = (char *) |
4a146b47 | 5992 | obstack_alloc (&objfile->objfile_obstack, blk->size); |
c906108c SS |
5993 | memcpy (SYMBOL_VALUE_BYTES (sym), blk->data, blk->size); |
5994 | SYMBOL_CLASS (sym) = LOC_CONST_BYTES; | |
5995 | break; | |
2df3850c JM |
5996 | |
5997 | /* The DW_AT_const_value attributes are supposed to carry the | |
5998 | symbol's value "represented as it would be on the target | |
5999 | architecture." By the time we get here, it's already been | |
6000 | converted to host endianness, so we just need to sign- or | |
6001 | zero-extend it as appropriate. */ | |
6002 | case DW_FORM_data1: | |
6003 | dwarf2_const_value_data (attr, sym, 8); | |
6004 | break; | |
c906108c | 6005 | case DW_FORM_data2: |
2df3850c JM |
6006 | dwarf2_const_value_data (attr, sym, 16); |
6007 | break; | |
c906108c | 6008 | case DW_FORM_data4: |
2df3850c JM |
6009 | dwarf2_const_value_data (attr, sym, 32); |
6010 | break; | |
c906108c | 6011 | case DW_FORM_data8: |
2df3850c JM |
6012 | dwarf2_const_value_data (attr, sym, 64); |
6013 | break; | |
6014 | ||
c906108c | 6015 | case DW_FORM_sdata: |
2df3850c JM |
6016 | SYMBOL_VALUE (sym) = DW_SND (attr); |
6017 | SYMBOL_CLASS (sym) = LOC_CONST; | |
6018 | break; | |
6019 | ||
c906108c SS |
6020 | case DW_FORM_udata: |
6021 | SYMBOL_VALUE (sym) = DW_UNSND (attr); | |
6022 | SYMBOL_CLASS (sym) = LOC_CONST; | |
6023 | break; | |
2df3850c | 6024 | |
c906108c | 6025 | default: |
4d3c2250 KB |
6026 | complaint (&symfile_complaints, |
6027 | "unsupported const value attribute form: '%s'", | |
6028 | dwarf_form_name (attr->form)); | |
c906108c SS |
6029 | SYMBOL_VALUE (sym) = 0; |
6030 | SYMBOL_CLASS (sym) = LOC_CONST; | |
6031 | break; | |
6032 | } | |
6033 | } | |
6034 | ||
2df3850c JM |
6035 | |
6036 | /* Given an attr with a DW_FORM_dataN value in host byte order, sign- | |
6037 | or zero-extend it as appropriate for the symbol's type. */ | |
6038 | static void | |
6039 | dwarf2_const_value_data (struct attribute *attr, | |
6040 | struct symbol *sym, | |
6041 | int bits) | |
6042 | { | |
6043 | LONGEST l = DW_UNSND (attr); | |
6044 | ||
6045 | if (bits < sizeof (l) * 8) | |
6046 | { | |
6047 | if (TYPE_UNSIGNED (SYMBOL_TYPE (sym))) | |
6048 | l &= ((LONGEST) 1 << bits) - 1; | |
6049 | else | |
bf9198f1 | 6050 | l = (l << (sizeof (l) * 8 - bits)) >> (sizeof (l) * 8 - bits); |
2df3850c JM |
6051 | } |
6052 | ||
6053 | SYMBOL_VALUE (sym) = l; | |
6054 | SYMBOL_CLASS (sym) = LOC_CONST; | |
6055 | } | |
6056 | ||
6057 | ||
c906108c SS |
6058 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
6059 | ||
6060 | static struct type * | |
e7c27a73 | 6061 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6062 | { |
6063 | struct type *type; | |
6064 | struct attribute *type_attr; | |
6065 | struct die_info *type_die; | |
6066 | unsigned int ref; | |
6067 | ||
e142c38c | 6068 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
6069 | if (!type_attr) |
6070 | { | |
6071 | /* A missing DW_AT_type represents a void type. */ | |
e142c38c | 6072 | return dwarf2_fundamental_type (cu->objfile, FT_VOID, cu); |
c906108c SS |
6073 | } |
6074 | else | |
6075 | { | |
e142c38c | 6076 | ref = dwarf2_get_ref_die_offset (type_attr, cu); |
c906108c SS |
6077 | type_die = follow_die_ref (ref); |
6078 | if (!type_die) | |
6079 | { | |
659b0389 | 6080 | error ("Dwarf Error: Cannot find referent at offset %d [in module %s]", |
e7c27a73 | 6081 | ref, cu->objfile->name); |
c906108c SS |
6082 | return NULL; |
6083 | } | |
6084 | } | |
e7c27a73 | 6085 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
6086 | if (!type) |
6087 | { | |
6088 | dump_die (type_die); | |
659b0389 | 6089 | error ("Dwarf Error: Problem turning type die at offset into gdb type [in module %s]", |
e7c27a73 | 6090 | cu->objfile->name); |
c906108c SS |
6091 | } |
6092 | return type; | |
6093 | } | |
6094 | ||
6095 | /* Return the containing type of the die in question using its | |
6096 | DW_AT_containing_type attribute. */ | |
6097 | ||
6098 | static struct type * | |
e7c27a73 | 6099 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6100 | { |
6101 | struct type *type = NULL; | |
6102 | struct attribute *type_attr; | |
6103 | struct die_info *type_die = NULL; | |
6104 | unsigned int ref; | |
6105 | ||
e142c38c | 6106 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
c906108c SS |
6107 | if (type_attr) |
6108 | { | |
e142c38c | 6109 | ref = dwarf2_get_ref_die_offset (type_attr, cu); |
c906108c SS |
6110 | type_die = follow_die_ref (ref); |
6111 | if (!type_die) | |
6112 | { | |
659b0389 | 6113 | error ("Dwarf Error: Cannot find referent at offset %d [in module %s]", ref, |
e7c27a73 | 6114 | cu->objfile->name); |
c906108c SS |
6115 | return NULL; |
6116 | } | |
e7c27a73 | 6117 | type = tag_type_to_type (type_die, cu); |
c906108c SS |
6118 | } |
6119 | if (!type) | |
6120 | { | |
6121 | if (type_die) | |
6122 | dump_die (type_die); | |
659b0389 | 6123 | error ("Dwarf Error: Problem turning containing type into gdb type [in module %s]", |
e7c27a73 | 6124 | cu->objfile->name); |
c906108c SS |
6125 | } |
6126 | return type; | |
6127 | } | |
6128 | ||
6129 | #if 0 | |
6130 | static struct type * | |
e7c27a73 | 6131 | type_at_offset (unsigned int offset, struct dwarf2_cu *cu) |
c906108c SS |
6132 | { |
6133 | struct die_info *die; | |
6134 | struct type *type; | |
6135 | ||
6136 | die = follow_die_ref (offset); | |
6137 | if (!die) | |
6138 | { | |
6139 | error ("Dwarf Error: Cannot find type referent at offset %d.", offset); | |
6140 | return NULL; | |
6141 | } | |
e7c27a73 | 6142 | type = tag_type_to_type (die, cu); |
c906108c SS |
6143 | return type; |
6144 | } | |
6145 | #endif | |
6146 | ||
6147 | static struct type * | |
e7c27a73 | 6148 | tag_type_to_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6149 | { |
6150 | if (die->type) | |
6151 | { | |
6152 | return die->type; | |
6153 | } | |
6154 | else | |
6155 | { | |
e7c27a73 | 6156 | read_type_die (die, cu); |
c906108c SS |
6157 | if (!die->type) |
6158 | { | |
6159 | dump_die (die); | |
659b0389 | 6160 | error ("Dwarf Error: Cannot find type of die [in module %s]", |
e7c27a73 | 6161 | cu->objfile->name); |
c906108c SS |
6162 | } |
6163 | return die->type; | |
6164 | } | |
6165 | } | |
6166 | ||
6167 | static void | |
e7c27a73 | 6168 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 6169 | { |
e142c38c | 6170 | char *prefix = determine_prefix (die, cu); |
63d06c5c DC |
6171 | const char *old_prefix = processing_current_prefix; |
6172 | struct cleanup *back_to = make_cleanup (xfree, prefix); | |
6173 | processing_current_prefix = prefix; | |
6174 | ||
c906108c SS |
6175 | switch (die->tag) |
6176 | { | |
6177 | case DW_TAG_class_type: | |
6178 | case DW_TAG_structure_type: | |
6179 | case DW_TAG_union_type: | |
134d01f1 | 6180 | read_structure_type (die, cu); |
c906108c SS |
6181 | break; |
6182 | case DW_TAG_enumeration_type: | |
134d01f1 | 6183 | read_enumeration_type (die, cu); |
c906108c SS |
6184 | break; |
6185 | case DW_TAG_subprogram: | |
6186 | case DW_TAG_subroutine_type: | |
e7c27a73 | 6187 | read_subroutine_type (die, cu); |
c906108c SS |
6188 | break; |
6189 | case DW_TAG_array_type: | |
e7c27a73 | 6190 | read_array_type (die, cu); |
c906108c SS |
6191 | break; |
6192 | case DW_TAG_pointer_type: | |
e7c27a73 | 6193 | read_tag_pointer_type (die, cu); |
c906108c SS |
6194 | break; |
6195 | case DW_TAG_ptr_to_member_type: | |
e7c27a73 | 6196 | read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
6197 | break; |
6198 | case DW_TAG_reference_type: | |
e7c27a73 | 6199 | read_tag_reference_type (die, cu); |
c906108c SS |
6200 | break; |
6201 | case DW_TAG_const_type: | |
e7c27a73 | 6202 | read_tag_const_type (die, cu); |
c906108c SS |
6203 | break; |
6204 | case DW_TAG_volatile_type: | |
e7c27a73 | 6205 | read_tag_volatile_type (die, cu); |
c906108c SS |
6206 | break; |
6207 | case DW_TAG_string_type: | |
e7c27a73 | 6208 | read_tag_string_type (die, cu); |
c906108c SS |
6209 | break; |
6210 | case DW_TAG_typedef: | |
e7c27a73 | 6211 | read_typedef (die, cu); |
c906108c | 6212 | break; |
a02abb62 JB |
6213 | case DW_TAG_subrange_type: |
6214 | read_subrange_type (die, cu); | |
6215 | break; | |
c906108c | 6216 | case DW_TAG_base_type: |
e7c27a73 | 6217 | read_base_type (die, cu); |
c906108c SS |
6218 | break; |
6219 | default: | |
4d3c2250 KB |
6220 | complaint (&symfile_complaints, "unexepected tag in read_type_die: '%s'", |
6221 | dwarf_tag_name (die->tag)); | |
c906108c SS |
6222 | break; |
6223 | } | |
63d06c5c DC |
6224 | |
6225 | processing_current_prefix = old_prefix; | |
6226 | do_cleanups (back_to); | |
6227 | } | |
6228 | ||
fdde2d81 DC |
6229 | /* Return the name of the namespace/class that DIE is defined within, |
6230 | or "" if we can't tell. The caller should xfree the result. */ | |
6231 | ||
6232 | /* NOTE: carlton/2004-01-23: See read_func_scope (and the comment | |
6233 | therein) for an example of how to use this function to deal with | |
6234 | DW_AT_specification. */ | |
6235 | ||
6236 | static char * | |
e142c38c | 6237 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c DC |
6238 | { |
6239 | struct die_info *parent; | |
6240 | ||
e142c38c | 6241 | if (cu->language != language_cplus) |
63d06c5c DC |
6242 | return NULL; |
6243 | ||
6244 | parent = die->parent; | |
6245 | ||
6246 | if (parent == NULL) | |
6247 | { | |
8176b9b8 | 6248 | return xstrdup (""); |
63d06c5c DC |
6249 | } |
6250 | else | |
6251 | { | |
63d06c5c DC |
6252 | switch (parent->tag) { |
6253 | case DW_TAG_namespace: | |
6254 | { | |
8176b9b8 DC |
6255 | /* FIXME: carlton/2004-03-05: Should I follow extension dies |
6256 | before doing this check? */ | |
6257 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) | |
6258 | { | |
6259 | return xstrdup (TYPE_TAG_NAME (parent->type)); | |
6260 | } | |
6261 | else | |
6262 | { | |
6263 | int dummy; | |
6264 | char *parent_prefix = determine_prefix (parent, cu); | |
6265 | char *retval = typename_concat (parent_prefix, | |
6266 | namespace_name (parent, &dummy, | |
6267 | cu)); | |
6268 | xfree (parent_prefix); | |
6269 | return retval; | |
6270 | } | |
63d06c5c DC |
6271 | } |
6272 | break; | |
6273 | case DW_TAG_class_type: | |
6274 | case DW_TAG_structure_type: | |
6275 | { | |
8176b9b8 | 6276 | if (parent->type != NULL && TYPE_TAG_NAME (parent->type) != NULL) |
63d06c5c | 6277 | { |
8176b9b8 | 6278 | return xstrdup (TYPE_TAG_NAME (parent->type)); |
63d06c5c DC |
6279 | } |
6280 | else | |
8176b9b8 DC |
6281 | { |
6282 | const char *old_prefix = processing_current_prefix; | |
6283 | char *new_prefix = determine_prefix (parent, cu); | |
6284 | char *retval; | |
6285 | ||
6286 | processing_current_prefix = new_prefix; | |
6287 | retval = determine_class_name (parent, cu); | |
6288 | processing_current_prefix = old_prefix; | |
6289 | ||
6290 | xfree (new_prefix); | |
6291 | return retval; | |
6292 | } | |
63d06c5c | 6293 | } |
63d06c5c | 6294 | default: |
8176b9b8 | 6295 | return determine_prefix (parent, cu); |
63d06c5c | 6296 | } |
63d06c5c DC |
6297 | } |
6298 | } | |
6299 | ||
6300 | /* Return a newly-allocated string formed by concatenating PREFIX, | |
6301 | "::", and SUFFIX, except that if PREFIX is NULL or the empty | |
6302 | string, just return a copy of SUFFIX. */ | |
6303 | ||
6304 | static char * | |
6305 | typename_concat (const char *prefix, const char *suffix) | |
6306 | { | |
6307 | if (prefix == NULL || prefix[0] == '\0') | |
6308 | return xstrdup (suffix); | |
6309 | else | |
6310 | { | |
6311 | char *retval = xmalloc (strlen (prefix) + 2 + strlen (suffix) + 1); | |
6312 | ||
6313 | strcpy (retval, prefix); | |
6314 | strcat (retval, "::"); | |
6315 | strcat (retval, suffix); | |
6316 | ||
6317 | return retval; | |
6318 | } | |
6319 | } | |
6320 | ||
c906108c | 6321 | static struct type * |
e7c27a73 | 6322 | dwarf_base_type (int encoding, int size, struct dwarf2_cu *cu) |
c906108c | 6323 | { |
e7c27a73 DJ |
6324 | struct objfile *objfile = cu->objfile; |
6325 | ||
c906108c SS |
6326 | /* FIXME - this should not produce a new (struct type *) |
6327 | every time. It should cache base types. */ | |
6328 | struct type *type; | |
6329 | switch (encoding) | |
6330 | { | |
6331 | case DW_ATE_address: | |
e142c38c | 6332 | type = dwarf2_fundamental_type (objfile, FT_VOID, cu); |
c906108c SS |
6333 | return type; |
6334 | case DW_ATE_boolean: | |
e142c38c | 6335 | type = dwarf2_fundamental_type (objfile, FT_BOOLEAN, cu); |
c906108c SS |
6336 | return type; |
6337 | case DW_ATE_complex_float: | |
6338 | if (size == 16) | |
6339 | { | |
e142c38c | 6340 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_COMPLEX, cu); |
c906108c SS |
6341 | } |
6342 | else | |
6343 | { | |
e142c38c | 6344 | type = dwarf2_fundamental_type (objfile, FT_COMPLEX, cu); |
c906108c SS |
6345 | } |
6346 | return type; | |
6347 | case DW_ATE_float: | |
6348 | if (size == 8) | |
6349 | { | |
e142c38c | 6350 | type = dwarf2_fundamental_type (objfile, FT_DBL_PREC_FLOAT, cu); |
c906108c SS |
6351 | } |
6352 | else | |
6353 | { | |
e142c38c | 6354 | type = dwarf2_fundamental_type (objfile, FT_FLOAT, cu); |
c906108c SS |
6355 | } |
6356 | return type; | |
6357 | case DW_ATE_signed: | |
6358 | switch (size) | |
6359 | { | |
6360 | case 1: | |
e142c38c | 6361 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
6362 | break; |
6363 | case 2: | |
e142c38c | 6364 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_SHORT, cu); |
c906108c SS |
6365 | break; |
6366 | default: | |
6367 | case 4: | |
e142c38c | 6368 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
6369 | break; |
6370 | } | |
6371 | return type; | |
6372 | case DW_ATE_signed_char: | |
e142c38c | 6373 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_CHAR, cu); |
c906108c SS |
6374 | return type; |
6375 | case DW_ATE_unsigned: | |
6376 | switch (size) | |
6377 | { | |
6378 | case 1: | |
e142c38c | 6379 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
6380 | break; |
6381 | case 2: | |
e142c38c | 6382 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_SHORT, cu); |
c906108c SS |
6383 | break; |
6384 | default: | |
6385 | case 4: | |
e142c38c | 6386 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_INTEGER, cu); |
c906108c SS |
6387 | break; |
6388 | } | |
6389 | return type; | |
6390 | case DW_ATE_unsigned_char: | |
e142c38c | 6391 | type = dwarf2_fundamental_type (objfile, FT_UNSIGNED_CHAR, cu); |
c906108c SS |
6392 | return type; |
6393 | default: | |
e142c38c | 6394 | type = dwarf2_fundamental_type (objfile, FT_SIGNED_INTEGER, cu); |
c906108c SS |
6395 | return type; |
6396 | } | |
6397 | } | |
6398 | ||
6399 | #if 0 | |
6400 | struct die_info * | |
fba45db2 | 6401 | copy_die (struct die_info *old_die) |
c906108c SS |
6402 | { |
6403 | struct die_info *new_die; | |
6404 | int i, num_attrs; | |
6405 | ||
6406 | new_die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
6407 | memset (new_die, 0, sizeof (struct die_info)); | |
6408 | ||
6409 | new_die->tag = old_die->tag; | |
6410 | new_die->has_children = old_die->has_children; | |
6411 | new_die->abbrev = old_die->abbrev; | |
6412 | new_die->offset = old_die->offset; | |
6413 | new_die->type = NULL; | |
6414 | ||
6415 | num_attrs = old_die->num_attrs; | |
6416 | new_die->num_attrs = num_attrs; | |
6417 | new_die->attrs = (struct attribute *) | |
6418 | xmalloc (num_attrs * sizeof (struct attribute)); | |
6419 | ||
6420 | for (i = 0; i < old_die->num_attrs; ++i) | |
6421 | { | |
6422 | new_die->attrs[i].name = old_die->attrs[i].name; | |
6423 | new_die->attrs[i].form = old_die->attrs[i].form; | |
6424 | new_die->attrs[i].u.addr = old_die->attrs[i].u.addr; | |
6425 | } | |
6426 | ||
6427 | new_die->next = NULL; | |
6428 | return new_die; | |
6429 | } | |
6430 | #endif | |
6431 | ||
6432 | /* Return sibling of die, NULL if no sibling. */ | |
6433 | ||
f9aca02d | 6434 | static struct die_info * |
fba45db2 | 6435 | sibling_die (struct die_info *die) |
c906108c | 6436 | { |
639d11d3 | 6437 | return die->sibling; |
c906108c SS |
6438 | } |
6439 | ||
6440 | /* Get linkage name of a die, return NULL if not found. */ | |
6441 | ||
6442 | static char * | |
e142c38c | 6443 | dwarf2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
6444 | { |
6445 | struct attribute *attr; | |
6446 | ||
e142c38c | 6447 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); |
c906108c SS |
6448 | if (attr && DW_STRING (attr)) |
6449 | return DW_STRING (attr); | |
e142c38c | 6450 | attr = dwarf2_attr (die, DW_AT_name, cu); |
c906108c SS |
6451 | if (attr && DW_STRING (attr)) |
6452 | return DW_STRING (attr); | |
6453 | return NULL; | |
6454 | } | |
6455 | ||
9219021c DC |
6456 | /* Get name of a die, return NULL if not found. */ |
6457 | ||
6458 | static char * | |
e142c38c | 6459 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
6460 | { |
6461 | struct attribute *attr; | |
6462 | ||
e142c38c | 6463 | attr = dwarf2_attr (die, DW_AT_name, cu); |
9219021c DC |
6464 | if (attr && DW_STRING (attr)) |
6465 | return DW_STRING (attr); | |
6466 | return NULL; | |
6467 | } | |
6468 | ||
6469 | /* Return the die that this die in an extension of, or NULL if there | |
6470 | is none. */ | |
6471 | ||
6472 | static struct die_info * | |
e142c38c | 6473 | dwarf2_extension (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
6474 | { |
6475 | struct attribute *attr; | |
6476 | struct die_info *extension_die; | |
6477 | unsigned int ref; | |
6478 | ||
e142c38c | 6479 | attr = dwarf2_attr (die, DW_AT_extension, cu); |
9219021c DC |
6480 | if (attr == NULL) |
6481 | return NULL; | |
6482 | ||
e142c38c | 6483 | ref = dwarf2_get_ref_die_offset (attr, cu); |
9219021c DC |
6484 | extension_die = follow_die_ref (ref); |
6485 | if (!extension_die) | |
6486 | { | |
6487 | error ("Dwarf Error: Cannot find referent at offset %d.", ref); | |
6488 | } | |
6489 | ||
6490 | return extension_die; | |
6491 | } | |
6492 | ||
c906108c SS |
6493 | /* Convert a DIE tag into its string name. */ |
6494 | ||
6495 | static char * | |
aa1ee363 | 6496 | dwarf_tag_name (unsigned tag) |
c906108c SS |
6497 | { |
6498 | switch (tag) | |
6499 | { | |
6500 | case DW_TAG_padding: | |
6501 | return "DW_TAG_padding"; | |
6502 | case DW_TAG_array_type: | |
6503 | return "DW_TAG_array_type"; | |
6504 | case DW_TAG_class_type: | |
6505 | return "DW_TAG_class_type"; | |
6506 | case DW_TAG_entry_point: | |
6507 | return "DW_TAG_entry_point"; | |
6508 | case DW_TAG_enumeration_type: | |
6509 | return "DW_TAG_enumeration_type"; | |
6510 | case DW_TAG_formal_parameter: | |
6511 | return "DW_TAG_formal_parameter"; | |
6512 | case DW_TAG_imported_declaration: | |
6513 | return "DW_TAG_imported_declaration"; | |
6514 | case DW_TAG_label: | |
6515 | return "DW_TAG_label"; | |
6516 | case DW_TAG_lexical_block: | |
6517 | return "DW_TAG_lexical_block"; | |
6518 | case DW_TAG_member: | |
6519 | return "DW_TAG_member"; | |
6520 | case DW_TAG_pointer_type: | |
6521 | return "DW_TAG_pointer_type"; | |
6522 | case DW_TAG_reference_type: | |
6523 | return "DW_TAG_reference_type"; | |
6524 | case DW_TAG_compile_unit: | |
6525 | return "DW_TAG_compile_unit"; | |
6526 | case DW_TAG_string_type: | |
6527 | return "DW_TAG_string_type"; | |
6528 | case DW_TAG_structure_type: | |
6529 | return "DW_TAG_structure_type"; | |
6530 | case DW_TAG_subroutine_type: | |
6531 | return "DW_TAG_subroutine_type"; | |
6532 | case DW_TAG_typedef: | |
6533 | return "DW_TAG_typedef"; | |
6534 | case DW_TAG_union_type: | |
6535 | return "DW_TAG_union_type"; | |
6536 | case DW_TAG_unspecified_parameters: | |
6537 | return "DW_TAG_unspecified_parameters"; | |
6538 | case DW_TAG_variant: | |
6539 | return "DW_TAG_variant"; | |
6540 | case DW_TAG_common_block: | |
6541 | return "DW_TAG_common_block"; | |
6542 | case DW_TAG_common_inclusion: | |
6543 | return "DW_TAG_common_inclusion"; | |
6544 | case DW_TAG_inheritance: | |
6545 | return "DW_TAG_inheritance"; | |
6546 | case DW_TAG_inlined_subroutine: | |
6547 | return "DW_TAG_inlined_subroutine"; | |
6548 | case DW_TAG_module: | |
6549 | return "DW_TAG_module"; | |
6550 | case DW_TAG_ptr_to_member_type: | |
6551 | return "DW_TAG_ptr_to_member_type"; | |
6552 | case DW_TAG_set_type: | |
6553 | return "DW_TAG_set_type"; | |
6554 | case DW_TAG_subrange_type: | |
6555 | return "DW_TAG_subrange_type"; | |
6556 | case DW_TAG_with_stmt: | |
6557 | return "DW_TAG_with_stmt"; | |
6558 | case DW_TAG_access_declaration: | |
6559 | return "DW_TAG_access_declaration"; | |
6560 | case DW_TAG_base_type: | |
6561 | return "DW_TAG_base_type"; | |
6562 | case DW_TAG_catch_block: | |
6563 | return "DW_TAG_catch_block"; | |
6564 | case DW_TAG_const_type: | |
6565 | return "DW_TAG_const_type"; | |
6566 | case DW_TAG_constant: | |
6567 | return "DW_TAG_constant"; | |
6568 | case DW_TAG_enumerator: | |
6569 | return "DW_TAG_enumerator"; | |
6570 | case DW_TAG_file_type: | |
6571 | return "DW_TAG_file_type"; | |
6572 | case DW_TAG_friend: | |
6573 | return "DW_TAG_friend"; | |
6574 | case DW_TAG_namelist: | |
6575 | return "DW_TAG_namelist"; | |
6576 | case DW_TAG_namelist_item: | |
6577 | return "DW_TAG_namelist_item"; | |
6578 | case DW_TAG_packed_type: | |
6579 | return "DW_TAG_packed_type"; | |
6580 | case DW_TAG_subprogram: | |
6581 | return "DW_TAG_subprogram"; | |
6582 | case DW_TAG_template_type_param: | |
6583 | return "DW_TAG_template_type_param"; | |
6584 | case DW_TAG_template_value_param: | |
6585 | return "DW_TAG_template_value_param"; | |
6586 | case DW_TAG_thrown_type: | |
6587 | return "DW_TAG_thrown_type"; | |
6588 | case DW_TAG_try_block: | |
6589 | return "DW_TAG_try_block"; | |
6590 | case DW_TAG_variant_part: | |
6591 | return "DW_TAG_variant_part"; | |
6592 | case DW_TAG_variable: | |
6593 | return "DW_TAG_variable"; | |
6594 | case DW_TAG_volatile_type: | |
6595 | return "DW_TAG_volatile_type"; | |
d9fa45fe DC |
6596 | case DW_TAG_dwarf_procedure: |
6597 | return "DW_TAG_dwarf_procedure"; | |
6598 | case DW_TAG_restrict_type: | |
6599 | return "DW_TAG_restrict_type"; | |
6600 | case DW_TAG_interface_type: | |
6601 | return "DW_TAG_interface_type"; | |
6602 | case DW_TAG_namespace: | |
6603 | return "DW_TAG_namespace"; | |
6604 | case DW_TAG_imported_module: | |
6605 | return "DW_TAG_imported_module"; | |
6606 | case DW_TAG_unspecified_type: | |
6607 | return "DW_TAG_unspecified_type"; | |
6608 | case DW_TAG_partial_unit: | |
6609 | return "DW_TAG_partial_unit"; | |
6610 | case DW_TAG_imported_unit: | |
6611 | return "DW_TAG_imported_unit"; | |
c906108c SS |
6612 | case DW_TAG_MIPS_loop: |
6613 | return "DW_TAG_MIPS_loop"; | |
6614 | case DW_TAG_format_label: | |
6615 | return "DW_TAG_format_label"; | |
6616 | case DW_TAG_function_template: | |
6617 | return "DW_TAG_function_template"; | |
6618 | case DW_TAG_class_template: | |
6619 | return "DW_TAG_class_template"; | |
6620 | default: | |
6621 | return "DW_TAG_<unknown>"; | |
6622 | } | |
6623 | } | |
6624 | ||
6625 | /* Convert a DWARF attribute code into its string name. */ | |
6626 | ||
6627 | static char * | |
aa1ee363 | 6628 | dwarf_attr_name (unsigned attr) |
c906108c SS |
6629 | { |
6630 | switch (attr) | |
6631 | { | |
6632 | case DW_AT_sibling: | |
6633 | return "DW_AT_sibling"; | |
6634 | case DW_AT_location: | |
6635 | return "DW_AT_location"; | |
6636 | case DW_AT_name: | |
6637 | return "DW_AT_name"; | |
6638 | case DW_AT_ordering: | |
6639 | return "DW_AT_ordering"; | |
6640 | case DW_AT_subscr_data: | |
6641 | return "DW_AT_subscr_data"; | |
6642 | case DW_AT_byte_size: | |
6643 | return "DW_AT_byte_size"; | |
6644 | case DW_AT_bit_offset: | |
6645 | return "DW_AT_bit_offset"; | |
6646 | case DW_AT_bit_size: | |
6647 | return "DW_AT_bit_size"; | |
6648 | case DW_AT_element_list: | |
6649 | return "DW_AT_element_list"; | |
6650 | case DW_AT_stmt_list: | |
6651 | return "DW_AT_stmt_list"; | |
6652 | case DW_AT_low_pc: | |
6653 | return "DW_AT_low_pc"; | |
6654 | case DW_AT_high_pc: | |
6655 | return "DW_AT_high_pc"; | |
6656 | case DW_AT_language: | |
6657 | return "DW_AT_language"; | |
6658 | case DW_AT_member: | |
6659 | return "DW_AT_member"; | |
6660 | case DW_AT_discr: | |
6661 | return "DW_AT_discr"; | |
6662 | case DW_AT_discr_value: | |
6663 | return "DW_AT_discr_value"; | |
6664 | case DW_AT_visibility: | |
6665 | return "DW_AT_visibility"; | |
6666 | case DW_AT_import: | |
6667 | return "DW_AT_import"; | |
6668 | case DW_AT_string_length: | |
6669 | return "DW_AT_string_length"; | |
6670 | case DW_AT_common_reference: | |
6671 | return "DW_AT_common_reference"; | |
6672 | case DW_AT_comp_dir: | |
6673 | return "DW_AT_comp_dir"; | |
6674 | case DW_AT_const_value: | |
6675 | return "DW_AT_const_value"; | |
6676 | case DW_AT_containing_type: | |
6677 | return "DW_AT_containing_type"; | |
6678 | case DW_AT_default_value: | |
6679 | return "DW_AT_default_value"; | |
6680 | case DW_AT_inline: | |
6681 | return "DW_AT_inline"; | |
6682 | case DW_AT_is_optional: | |
6683 | return "DW_AT_is_optional"; | |
6684 | case DW_AT_lower_bound: | |
6685 | return "DW_AT_lower_bound"; | |
6686 | case DW_AT_producer: | |
6687 | return "DW_AT_producer"; | |
6688 | case DW_AT_prototyped: | |
6689 | return "DW_AT_prototyped"; | |
6690 | case DW_AT_return_addr: | |
6691 | return "DW_AT_return_addr"; | |
6692 | case DW_AT_start_scope: | |
6693 | return "DW_AT_start_scope"; | |
6694 | case DW_AT_stride_size: | |
6695 | return "DW_AT_stride_size"; | |
6696 | case DW_AT_upper_bound: | |
6697 | return "DW_AT_upper_bound"; | |
6698 | case DW_AT_abstract_origin: | |
6699 | return "DW_AT_abstract_origin"; | |
6700 | case DW_AT_accessibility: | |
6701 | return "DW_AT_accessibility"; | |
6702 | case DW_AT_address_class: | |
6703 | return "DW_AT_address_class"; | |
6704 | case DW_AT_artificial: | |
6705 | return "DW_AT_artificial"; | |
6706 | case DW_AT_base_types: | |
6707 | return "DW_AT_base_types"; | |
6708 | case DW_AT_calling_convention: | |
6709 | return "DW_AT_calling_convention"; | |
6710 | case DW_AT_count: | |
6711 | return "DW_AT_count"; | |
6712 | case DW_AT_data_member_location: | |
6713 | return "DW_AT_data_member_location"; | |
6714 | case DW_AT_decl_column: | |
6715 | return "DW_AT_decl_column"; | |
6716 | case DW_AT_decl_file: | |
6717 | return "DW_AT_decl_file"; | |
6718 | case DW_AT_decl_line: | |
6719 | return "DW_AT_decl_line"; | |
6720 | case DW_AT_declaration: | |
6721 | return "DW_AT_declaration"; | |
6722 | case DW_AT_discr_list: | |
6723 | return "DW_AT_discr_list"; | |
6724 | case DW_AT_encoding: | |
6725 | return "DW_AT_encoding"; | |
6726 | case DW_AT_external: | |
6727 | return "DW_AT_external"; | |
6728 | case DW_AT_frame_base: | |
6729 | return "DW_AT_frame_base"; | |
6730 | case DW_AT_friend: | |
6731 | return "DW_AT_friend"; | |
6732 | case DW_AT_identifier_case: | |
6733 | return "DW_AT_identifier_case"; | |
6734 | case DW_AT_macro_info: | |
6735 | return "DW_AT_macro_info"; | |
6736 | case DW_AT_namelist_items: | |
6737 | return "DW_AT_namelist_items"; | |
6738 | case DW_AT_priority: | |
6739 | return "DW_AT_priority"; | |
6740 | case DW_AT_segment: | |
6741 | return "DW_AT_segment"; | |
6742 | case DW_AT_specification: | |
6743 | return "DW_AT_specification"; | |
6744 | case DW_AT_static_link: | |
6745 | return "DW_AT_static_link"; | |
6746 | case DW_AT_type: | |
6747 | return "DW_AT_type"; | |
6748 | case DW_AT_use_location: | |
6749 | return "DW_AT_use_location"; | |
6750 | case DW_AT_variable_parameter: | |
6751 | return "DW_AT_variable_parameter"; | |
6752 | case DW_AT_virtuality: | |
6753 | return "DW_AT_virtuality"; | |
6754 | case DW_AT_vtable_elem_location: | |
6755 | return "DW_AT_vtable_elem_location"; | |
d9fa45fe DC |
6756 | case DW_AT_allocated: |
6757 | return "DW_AT_allocated"; | |
6758 | case DW_AT_associated: | |
6759 | return "DW_AT_associated"; | |
6760 | case DW_AT_data_location: | |
6761 | return "DW_AT_data_location"; | |
6762 | case DW_AT_stride: | |
6763 | return "DW_AT_stride"; | |
6764 | case DW_AT_entry_pc: | |
6765 | return "DW_AT_entry_pc"; | |
6766 | case DW_AT_use_UTF8: | |
6767 | return "DW_AT_use_UTF8"; | |
6768 | case DW_AT_extension: | |
6769 | return "DW_AT_extension"; | |
6770 | case DW_AT_ranges: | |
6771 | return "DW_AT_ranges"; | |
6772 | case DW_AT_trampoline: | |
6773 | return "DW_AT_trampoline"; | |
6774 | case DW_AT_call_column: | |
6775 | return "DW_AT_call_column"; | |
6776 | case DW_AT_call_file: | |
6777 | return "DW_AT_call_file"; | |
6778 | case DW_AT_call_line: | |
6779 | return "DW_AT_call_line"; | |
c906108c SS |
6780 | #ifdef MIPS |
6781 | case DW_AT_MIPS_fde: | |
6782 | return "DW_AT_MIPS_fde"; | |
6783 | case DW_AT_MIPS_loop_begin: | |
6784 | return "DW_AT_MIPS_loop_begin"; | |
6785 | case DW_AT_MIPS_tail_loop_begin: | |
6786 | return "DW_AT_MIPS_tail_loop_begin"; | |
6787 | case DW_AT_MIPS_epilog_begin: | |
6788 | return "DW_AT_MIPS_epilog_begin"; | |
6789 | case DW_AT_MIPS_loop_unroll_factor: | |
6790 | return "DW_AT_MIPS_loop_unroll_factor"; | |
6791 | case DW_AT_MIPS_software_pipeline_depth: | |
6792 | return "DW_AT_MIPS_software_pipeline_depth"; | |
e0a4f5a1 | 6793 | #endif |
c906108c SS |
6794 | case DW_AT_MIPS_linkage_name: |
6795 | return "DW_AT_MIPS_linkage_name"; | |
c906108c SS |
6796 | |
6797 | case DW_AT_sf_names: | |
6798 | return "DW_AT_sf_names"; | |
6799 | case DW_AT_src_info: | |
6800 | return "DW_AT_src_info"; | |
6801 | case DW_AT_mac_info: | |
6802 | return "DW_AT_mac_info"; | |
6803 | case DW_AT_src_coords: | |
6804 | return "DW_AT_src_coords"; | |
6805 | case DW_AT_body_begin: | |
6806 | return "DW_AT_body_begin"; | |
6807 | case DW_AT_body_end: | |
6808 | return "DW_AT_body_end"; | |
f5f8a009 EZ |
6809 | case DW_AT_GNU_vector: |
6810 | return "DW_AT_GNU_vector"; | |
c906108c SS |
6811 | default: |
6812 | return "DW_AT_<unknown>"; | |
6813 | } | |
6814 | } | |
6815 | ||
6816 | /* Convert a DWARF value form code into its string name. */ | |
6817 | ||
6818 | static char * | |
aa1ee363 | 6819 | dwarf_form_name (unsigned form) |
c906108c SS |
6820 | { |
6821 | switch (form) | |
6822 | { | |
6823 | case DW_FORM_addr: | |
6824 | return "DW_FORM_addr"; | |
6825 | case DW_FORM_block2: | |
6826 | return "DW_FORM_block2"; | |
6827 | case DW_FORM_block4: | |
6828 | return "DW_FORM_block4"; | |
6829 | case DW_FORM_data2: | |
6830 | return "DW_FORM_data2"; | |
6831 | case DW_FORM_data4: | |
6832 | return "DW_FORM_data4"; | |
6833 | case DW_FORM_data8: | |
6834 | return "DW_FORM_data8"; | |
6835 | case DW_FORM_string: | |
6836 | return "DW_FORM_string"; | |
6837 | case DW_FORM_block: | |
6838 | return "DW_FORM_block"; | |
6839 | case DW_FORM_block1: | |
6840 | return "DW_FORM_block1"; | |
6841 | case DW_FORM_data1: | |
6842 | return "DW_FORM_data1"; | |
6843 | case DW_FORM_flag: | |
6844 | return "DW_FORM_flag"; | |
6845 | case DW_FORM_sdata: | |
6846 | return "DW_FORM_sdata"; | |
6847 | case DW_FORM_strp: | |
6848 | return "DW_FORM_strp"; | |
6849 | case DW_FORM_udata: | |
6850 | return "DW_FORM_udata"; | |
6851 | case DW_FORM_ref_addr: | |
6852 | return "DW_FORM_ref_addr"; | |
6853 | case DW_FORM_ref1: | |
6854 | return "DW_FORM_ref1"; | |
6855 | case DW_FORM_ref2: | |
6856 | return "DW_FORM_ref2"; | |
6857 | case DW_FORM_ref4: | |
6858 | return "DW_FORM_ref4"; | |
6859 | case DW_FORM_ref8: | |
6860 | return "DW_FORM_ref8"; | |
6861 | case DW_FORM_ref_udata: | |
6862 | return "DW_FORM_ref_udata"; | |
6863 | case DW_FORM_indirect: | |
6864 | return "DW_FORM_indirect"; | |
6865 | default: | |
6866 | return "DW_FORM_<unknown>"; | |
6867 | } | |
6868 | } | |
6869 | ||
6870 | /* Convert a DWARF stack opcode into its string name. */ | |
6871 | ||
6872 | static char * | |
aa1ee363 | 6873 | dwarf_stack_op_name (unsigned op) |
c906108c SS |
6874 | { |
6875 | switch (op) | |
6876 | { | |
6877 | case DW_OP_addr: | |
6878 | return "DW_OP_addr"; | |
6879 | case DW_OP_deref: | |
6880 | return "DW_OP_deref"; | |
6881 | case DW_OP_const1u: | |
6882 | return "DW_OP_const1u"; | |
6883 | case DW_OP_const1s: | |
6884 | return "DW_OP_const1s"; | |
6885 | case DW_OP_const2u: | |
6886 | return "DW_OP_const2u"; | |
6887 | case DW_OP_const2s: | |
6888 | return "DW_OP_const2s"; | |
6889 | case DW_OP_const4u: | |
6890 | return "DW_OP_const4u"; | |
6891 | case DW_OP_const4s: | |
6892 | return "DW_OP_const4s"; | |
6893 | case DW_OP_const8u: | |
6894 | return "DW_OP_const8u"; | |
6895 | case DW_OP_const8s: | |
6896 | return "DW_OP_const8s"; | |
6897 | case DW_OP_constu: | |
6898 | return "DW_OP_constu"; | |
6899 | case DW_OP_consts: | |
6900 | return "DW_OP_consts"; | |
6901 | case DW_OP_dup: | |
6902 | return "DW_OP_dup"; | |
6903 | case DW_OP_drop: | |
6904 | return "DW_OP_drop"; | |
6905 | case DW_OP_over: | |
6906 | return "DW_OP_over"; | |
6907 | case DW_OP_pick: | |
6908 | return "DW_OP_pick"; | |
6909 | case DW_OP_swap: | |
6910 | return "DW_OP_swap"; | |
6911 | case DW_OP_rot: | |
6912 | return "DW_OP_rot"; | |
6913 | case DW_OP_xderef: | |
6914 | return "DW_OP_xderef"; | |
6915 | case DW_OP_abs: | |
6916 | return "DW_OP_abs"; | |
6917 | case DW_OP_and: | |
6918 | return "DW_OP_and"; | |
6919 | case DW_OP_div: | |
6920 | return "DW_OP_div"; | |
6921 | case DW_OP_minus: | |
6922 | return "DW_OP_minus"; | |
6923 | case DW_OP_mod: | |
6924 | return "DW_OP_mod"; | |
6925 | case DW_OP_mul: | |
6926 | return "DW_OP_mul"; | |
6927 | case DW_OP_neg: | |
6928 | return "DW_OP_neg"; | |
6929 | case DW_OP_not: | |
6930 | return "DW_OP_not"; | |
6931 | case DW_OP_or: | |
6932 | return "DW_OP_or"; | |
6933 | case DW_OP_plus: | |
6934 | return "DW_OP_plus"; | |
6935 | case DW_OP_plus_uconst: | |
6936 | return "DW_OP_plus_uconst"; | |
6937 | case DW_OP_shl: | |
6938 | return "DW_OP_shl"; | |
6939 | case DW_OP_shr: | |
6940 | return "DW_OP_shr"; | |
6941 | case DW_OP_shra: | |
6942 | return "DW_OP_shra"; | |
6943 | case DW_OP_xor: | |
6944 | return "DW_OP_xor"; | |
6945 | case DW_OP_bra: | |
6946 | return "DW_OP_bra"; | |
6947 | case DW_OP_eq: | |
6948 | return "DW_OP_eq"; | |
6949 | case DW_OP_ge: | |
6950 | return "DW_OP_ge"; | |
6951 | case DW_OP_gt: | |
6952 | return "DW_OP_gt"; | |
6953 | case DW_OP_le: | |
6954 | return "DW_OP_le"; | |
6955 | case DW_OP_lt: | |
6956 | return "DW_OP_lt"; | |
6957 | case DW_OP_ne: | |
6958 | return "DW_OP_ne"; | |
6959 | case DW_OP_skip: | |
6960 | return "DW_OP_skip"; | |
6961 | case DW_OP_lit0: | |
6962 | return "DW_OP_lit0"; | |
6963 | case DW_OP_lit1: | |
6964 | return "DW_OP_lit1"; | |
6965 | case DW_OP_lit2: | |
6966 | return "DW_OP_lit2"; | |
6967 | case DW_OP_lit3: | |
6968 | return "DW_OP_lit3"; | |
6969 | case DW_OP_lit4: | |
6970 | return "DW_OP_lit4"; | |
6971 | case DW_OP_lit5: | |
6972 | return "DW_OP_lit5"; | |
6973 | case DW_OP_lit6: | |
6974 | return "DW_OP_lit6"; | |
6975 | case DW_OP_lit7: | |
6976 | return "DW_OP_lit7"; | |
6977 | case DW_OP_lit8: | |
6978 | return "DW_OP_lit8"; | |
6979 | case DW_OP_lit9: | |
6980 | return "DW_OP_lit9"; | |
6981 | case DW_OP_lit10: | |
6982 | return "DW_OP_lit10"; | |
6983 | case DW_OP_lit11: | |
6984 | return "DW_OP_lit11"; | |
6985 | case DW_OP_lit12: | |
6986 | return "DW_OP_lit12"; | |
6987 | case DW_OP_lit13: | |
6988 | return "DW_OP_lit13"; | |
6989 | case DW_OP_lit14: | |
6990 | return "DW_OP_lit14"; | |
6991 | case DW_OP_lit15: | |
6992 | return "DW_OP_lit15"; | |
6993 | case DW_OP_lit16: | |
6994 | return "DW_OP_lit16"; | |
6995 | case DW_OP_lit17: | |
6996 | return "DW_OP_lit17"; | |
6997 | case DW_OP_lit18: | |
6998 | return "DW_OP_lit18"; | |
6999 | case DW_OP_lit19: | |
7000 | return "DW_OP_lit19"; | |
7001 | case DW_OP_lit20: | |
7002 | return "DW_OP_lit20"; | |
7003 | case DW_OP_lit21: | |
7004 | return "DW_OP_lit21"; | |
7005 | case DW_OP_lit22: | |
7006 | return "DW_OP_lit22"; | |
7007 | case DW_OP_lit23: | |
7008 | return "DW_OP_lit23"; | |
7009 | case DW_OP_lit24: | |
7010 | return "DW_OP_lit24"; | |
7011 | case DW_OP_lit25: | |
7012 | return "DW_OP_lit25"; | |
7013 | case DW_OP_lit26: | |
7014 | return "DW_OP_lit26"; | |
7015 | case DW_OP_lit27: | |
7016 | return "DW_OP_lit27"; | |
7017 | case DW_OP_lit28: | |
7018 | return "DW_OP_lit28"; | |
7019 | case DW_OP_lit29: | |
7020 | return "DW_OP_lit29"; | |
7021 | case DW_OP_lit30: | |
7022 | return "DW_OP_lit30"; | |
7023 | case DW_OP_lit31: | |
7024 | return "DW_OP_lit31"; | |
7025 | case DW_OP_reg0: | |
7026 | return "DW_OP_reg0"; | |
7027 | case DW_OP_reg1: | |
7028 | return "DW_OP_reg1"; | |
7029 | case DW_OP_reg2: | |
7030 | return "DW_OP_reg2"; | |
7031 | case DW_OP_reg3: | |
7032 | return "DW_OP_reg3"; | |
7033 | case DW_OP_reg4: | |
7034 | return "DW_OP_reg4"; | |
7035 | case DW_OP_reg5: | |
7036 | return "DW_OP_reg5"; | |
7037 | case DW_OP_reg6: | |
7038 | return "DW_OP_reg6"; | |
7039 | case DW_OP_reg7: | |
7040 | return "DW_OP_reg7"; | |
7041 | case DW_OP_reg8: | |
7042 | return "DW_OP_reg8"; | |
7043 | case DW_OP_reg9: | |
7044 | return "DW_OP_reg9"; | |
7045 | case DW_OP_reg10: | |
7046 | return "DW_OP_reg10"; | |
7047 | case DW_OP_reg11: | |
7048 | return "DW_OP_reg11"; | |
7049 | case DW_OP_reg12: | |
7050 | return "DW_OP_reg12"; | |
7051 | case DW_OP_reg13: | |
7052 | return "DW_OP_reg13"; | |
7053 | case DW_OP_reg14: | |
7054 | return "DW_OP_reg14"; | |
7055 | case DW_OP_reg15: | |
7056 | return "DW_OP_reg15"; | |
7057 | case DW_OP_reg16: | |
7058 | return "DW_OP_reg16"; | |
7059 | case DW_OP_reg17: | |
7060 | return "DW_OP_reg17"; | |
7061 | case DW_OP_reg18: | |
7062 | return "DW_OP_reg18"; | |
7063 | case DW_OP_reg19: | |
7064 | return "DW_OP_reg19"; | |
7065 | case DW_OP_reg20: | |
7066 | return "DW_OP_reg20"; | |
7067 | case DW_OP_reg21: | |
7068 | return "DW_OP_reg21"; | |
7069 | case DW_OP_reg22: | |
7070 | return "DW_OP_reg22"; | |
7071 | case DW_OP_reg23: | |
7072 | return "DW_OP_reg23"; | |
7073 | case DW_OP_reg24: | |
7074 | return "DW_OP_reg24"; | |
7075 | case DW_OP_reg25: | |
7076 | return "DW_OP_reg25"; | |
7077 | case DW_OP_reg26: | |
7078 | return "DW_OP_reg26"; | |
7079 | case DW_OP_reg27: | |
7080 | return "DW_OP_reg27"; | |
7081 | case DW_OP_reg28: | |
7082 | return "DW_OP_reg28"; | |
7083 | case DW_OP_reg29: | |
7084 | return "DW_OP_reg29"; | |
7085 | case DW_OP_reg30: | |
7086 | return "DW_OP_reg30"; | |
7087 | case DW_OP_reg31: | |
7088 | return "DW_OP_reg31"; | |
7089 | case DW_OP_breg0: | |
7090 | return "DW_OP_breg0"; | |
7091 | case DW_OP_breg1: | |
7092 | return "DW_OP_breg1"; | |
7093 | case DW_OP_breg2: | |
7094 | return "DW_OP_breg2"; | |
7095 | case DW_OP_breg3: | |
7096 | return "DW_OP_breg3"; | |
7097 | case DW_OP_breg4: | |
7098 | return "DW_OP_breg4"; | |
7099 | case DW_OP_breg5: | |
7100 | return "DW_OP_breg5"; | |
7101 | case DW_OP_breg6: | |
7102 | return "DW_OP_breg6"; | |
7103 | case DW_OP_breg7: | |
7104 | return "DW_OP_breg7"; | |
7105 | case DW_OP_breg8: | |
7106 | return "DW_OP_breg8"; | |
7107 | case DW_OP_breg9: | |
7108 | return "DW_OP_breg9"; | |
7109 | case DW_OP_breg10: | |
7110 | return "DW_OP_breg10"; | |
7111 | case DW_OP_breg11: | |
7112 | return "DW_OP_breg11"; | |
7113 | case DW_OP_breg12: | |
7114 | return "DW_OP_breg12"; | |
7115 | case DW_OP_breg13: | |
7116 | return "DW_OP_breg13"; | |
7117 | case DW_OP_breg14: | |
7118 | return "DW_OP_breg14"; | |
7119 | case DW_OP_breg15: | |
7120 | return "DW_OP_breg15"; | |
7121 | case DW_OP_breg16: | |
7122 | return "DW_OP_breg16"; | |
7123 | case DW_OP_breg17: | |
7124 | return "DW_OP_breg17"; | |
7125 | case DW_OP_breg18: | |
7126 | return "DW_OP_breg18"; | |
7127 | case DW_OP_breg19: | |
7128 | return "DW_OP_breg19"; | |
7129 | case DW_OP_breg20: | |
7130 | return "DW_OP_breg20"; | |
7131 | case DW_OP_breg21: | |
7132 | return "DW_OP_breg21"; | |
7133 | case DW_OP_breg22: | |
7134 | return "DW_OP_breg22"; | |
7135 | case DW_OP_breg23: | |
7136 | return "DW_OP_breg23"; | |
7137 | case DW_OP_breg24: | |
7138 | return "DW_OP_breg24"; | |
7139 | case DW_OP_breg25: | |
7140 | return "DW_OP_breg25"; | |
7141 | case DW_OP_breg26: | |
7142 | return "DW_OP_breg26"; | |
7143 | case DW_OP_breg27: | |
7144 | return "DW_OP_breg27"; | |
7145 | case DW_OP_breg28: | |
7146 | return "DW_OP_breg28"; | |
7147 | case DW_OP_breg29: | |
7148 | return "DW_OP_breg29"; | |
7149 | case DW_OP_breg30: | |
7150 | return "DW_OP_breg30"; | |
7151 | case DW_OP_breg31: | |
7152 | return "DW_OP_breg31"; | |
7153 | case DW_OP_regx: | |
7154 | return "DW_OP_regx"; | |
7155 | case DW_OP_fbreg: | |
7156 | return "DW_OP_fbreg"; | |
7157 | case DW_OP_bregx: | |
7158 | return "DW_OP_bregx"; | |
7159 | case DW_OP_piece: | |
7160 | return "DW_OP_piece"; | |
7161 | case DW_OP_deref_size: | |
7162 | return "DW_OP_deref_size"; | |
7163 | case DW_OP_xderef_size: | |
7164 | return "DW_OP_xderef_size"; | |
7165 | case DW_OP_nop: | |
7166 | return "DW_OP_nop"; | |
ed348acc EZ |
7167 | /* DWARF 3 extensions. */ |
7168 | case DW_OP_push_object_address: | |
7169 | return "DW_OP_push_object_address"; | |
7170 | case DW_OP_call2: | |
7171 | return "DW_OP_call2"; | |
7172 | case DW_OP_call4: | |
7173 | return "DW_OP_call4"; | |
7174 | case DW_OP_call_ref: | |
7175 | return "DW_OP_call_ref"; | |
7176 | /* GNU extensions. */ | |
7177 | case DW_OP_GNU_push_tls_address: | |
7178 | return "DW_OP_GNU_push_tls_address"; | |
c906108c SS |
7179 | default: |
7180 | return "OP_<unknown>"; | |
7181 | } | |
7182 | } | |
7183 | ||
7184 | static char * | |
fba45db2 | 7185 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
7186 | { |
7187 | if (mybool) | |
7188 | return "TRUE"; | |
7189 | else | |
7190 | return "FALSE"; | |
7191 | } | |
7192 | ||
7193 | /* Convert a DWARF type code into its string name. */ | |
7194 | ||
7195 | static char * | |
aa1ee363 | 7196 | dwarf_type_encoding_name (unsigned enc) |
c906108c SS |
7197 | { |
7198 | switch (enc) | |
7199 | { | |
7200 | case DW_ATE_address: | |
7201 | return "DW_ATE_address"; | |
7202 | case DW_ATE_boolean: | |
7203 | return "DW_ATE_boolean"; | |
7204 | case DW_ATE_complex_float: | |
7205 | return "DW_ATE_complex_float"; | |
7206 | case DW_ATE_float: | |
7207 | return "DW_ATE_float"; | |
7208 | case DW_ATE_signed: | |
7209 | return "DW_ATE_signed"; | |
7210 | case DW_ATE_signed_char: | |
7211 | return "DW_ATE_signed_char"; | |
7212 | case DW_ATE_unsigned: | |
7213 | return "DW_ATE_unsigned"; | |
7214 | case DW_ATE_unsigned_char: | |
7215 | return "DW_ATE_unsigned_char"; | |
d9fa45fe DC |
7216 | case DW_ATE_imaginary_float: |
7217 | return "DW_ATE_imaginary_float"; | |
c906108c SS |
7218 | default: |
7219 | return "DW_ATE_<unknown>"; | |
7220 | } | |
7221 | } | |
7222 | ||
7223 | /* Convert a DWARF call frame info operation to its string name. */ | |
7224 | ||
7225 | #if 0 | |
7226 | static char * | |
aa1ee363 | 7227 | dwarf_cfi_name (unsigned cfi_opc) |
c906108c SS |
7228 | { |
7229 | switch (cfi_opc) | |
7230 | { | |
7231 | case DW_CFA_advance_loc: | |
7232 | return "DW_CFA_advance_loc"; | |
7233 | case DW_CFA_offset: | |
7234 | return "DW_CFA_offset"; | |
7235 | case DW_CFA_restore: | |
7236 | return "DW_CFA_restore"; | |
7237 | case DW_CFA_nop: | |
7238 | return "DW_CFA_nop"; | |
7239 | case DW_CFA_set_loc: | |
7240 | return "DW_CFA_set_loc"; | |
7241 | case DW_CFA_advance_loc1: | |
7242 | return "DW_CFA_advance_loc1"; | |
7243 | case DW_CFA_advance_loc2: | |
7244 | return "DW_CFA_advance_loc2"; | |
7245 | case DW_CFA_advance_loc4: | |
7246 | return "DW_CFA_advance_loc4"; | |
7247 | case DW_CFA_offset_extended: | |
7248 | return "DW_CFA_offset_extended"; | |
7249 | case DW_CFA_restore_extended: | |
7250 | return "DW_CFA_restore_extended"; | |
7251 | case DW_CFA_undefined: | |
7252 | return "DW_CFA_undefined"; | |
7253 | case DW_CFA_same_value: | |
7254 | return "DW_CFA_same_value"; | |
7255 | case DW_CFA_register: | |
7256 | return "DW_CFA_register"; | |
7257 | case DW_CFA_remember_state: | |
7258 | return "DW_CFA_remember_state"; | |
7259 | case DW_CFA_restore_state: | |
7260 | return "DW_CFA_restore_state"; | |
7261 | case DW_CFA_def_cfa: | |
7262 | return "DW_CFA_def_cfa"; | |
7263 | case DW_CFA_def_cfa_register: | |
7264 | return "DW_CFA_def_cfa_register"; | |
7265 | case DW_CFA_def_cfa_offset: | |
7266 | return "DW_CFA_def_cfa_offset"; | |
985cb1a3 JM |
7267 | |
7268 | /* DWARF 3 */ | |
7269 | case DW_CFA_def_cfa_expression: | |
7270 | return "DW_CFA_def_cfa_expression"; | |
7271 | case DW_CFA_expression: | |
7272 | return "DW_CFA_expression"; | |
7273 | case DW_CFA_offset_extended_sf: | |
7274 | return "DW_CFA_offset_extended_sf"; | |
7275 | case DW_CFA_def_cfa_sf: | |
7276 | return "DW_CFA_def_cfa_sf"; | |
7277 | case DW_CFA_def_cfa_offset_sf: | |
7278 | return "DW_CFA_def_cfa_offset_sf"; | |
7279 | ||
c906108c SS |
7280 | /* SGI/MIPS specific */ |
7281 | case DW_CFA_MIPS_advance_loc8: | |
7282 | return "DW_CFA_MIPS_advance_loc8"; | |
985cb1a3 JM |
7283 | |
7284 | /* GNU extensions */ | |
7285 | case DW_CFA_GNU_window_save: | |
7286 | return "DW_CFA_GNU_window_save"; | |
7287 | case DW_CFA_GNU_args_size: | |
7288 | return "DW_CFA_GNU_args_size"; | |
7289 | case DW_CFA_GNU_negative_offset_extended: | |
7290 | return "DW_CFA_GNU_negative_offset_extended"; | |
7291 | ||
c906108c SS |
7292 | default: |
7293 | return "DW_CFA_<unknown>"; | |
7294 | } | |
7295 | } | |
7296 | #endif | |
7297 | ||
f9aca02d | 7298 | static void |
fba45db2 | 7299 | dump_die (struct die_info *die) |
c906108c SS |
7300 | { |
7301 | unsigned int i; | |
7302 | ||
48cd0caa | 7303 | fprintf_unfiltered (gdb_stderr, "Die: %s (abbrev = %d, offset = %d)\n", |
c906108c | 7304 | dwarf_tag_name (die->tag), die->abbrev, die->offset); |
48cd0caa | 7305 | fprintf_unfiltered (gdb_stderr, "\thas children: %s\n", |
639d11d3 | 7306 | dwarf_bool_name (die->child != NULL)); |
c906108c | 7307 | |
48cd0caa | 7308 | fprintf_unfiltered (gdb_stderr, "\tattributes:\n"); |
c906108c SS |
7309 | for (i = 0; i < die->num_attrs; ++i) |
7310 | { | |
48cd0caa | 7311 | fprintf_unfiltered (gdb_stderr, "\t\t%s (%s) ", |
c906108c SS |
7312 | dwarf_attr_name (die->attrs[i].name), |
7313 | dwarf_form_name (die->attrs[i].form)); | |
7314 | switch (die->attrs[i].form) | |
7315 | { | |
7316 | case DW_FORM_ref_addr: | |
7317 | case DW_FORM_addr: | |
48cd0caa | 7318 | fprintf_unfiltered (gdb_stderr, "address: "); |
c906108c SS |
7319 | print_address_numeric (DW_ADDR (&die->attrs[i]), 1, gdb_stderr); |
7320 | break; | |
7321 | case DW_FORM_block2: | |
7322 | case DW_FORM_block4: | |
7323 | case DW_FORM_block: | |
7324 | case DW_FORM_block1: | |
48cd0caa | 7325 | fprintf_unfiltered (gdb_stderr, "block: size %d", DW_BLOCK (&die->attrs[i])->size); |
c906108c SS |
7326 | break; |
7327 | case DW_FORM_data1: | |
7328 | case DW_FORM_data2: | |
7329 | case DW_FORM_data4: | |
ce5d95e1 | 7330 | case DW_FORM_data8: |
c906108c SS |
7331 | case DW_FORM_ref1: |
7332 | case DW_FORM_ref2: | |
7333 | case DW_FORM_ref4: | |
7334 | case DW_FORM_udata: | |
7335 | case DW_FORM_sdata: | |
48cd0caa | 7336 | fprintf_unfiltered (gdb_stderr, "constant: %ld", DW_UNSND (&die->attrs[i])); |
c906108c SS |
7337 | break; |
7338 | case DW_FORM_string: | |
4bdf3d34 | 7339 | case DW_FORM_strp: |
48cd0caa | 7340 | fprintf_unfiltered (gdb_stderr, "string: \"%s\"", |
c906108c | 7341 | DW_STRING (&die->attrs[i]) |
c5aa993b | 7342 | ? DW_STRING (&die->attrs[i]) : ""); |
c906108c SS |
7343 | break; |
7344 | case DW_FORM_flag: | |
7345 | if (DW_UNSND (&die->attrs[i])) | |
48cd0caa | 7346 | fprintf_unfiltered (gdb_stderr, "flag: TRUE"); |
c906108c | 7347 | else |
48cd0caa | 7348 | fprintf_unfiltered (gdb_stderr, "flag: FALSE"); |
c906108c | 7349 | break; |
a8329558 KW |
7350 | case DW_FORM_indirect: |
7351 | /* the reader will have reduced the indirect form to | |
7352 | the "base form" so this form should not occur */ | |
48cd0caa | 7353 | fprintf_unfiltered (gdb_stderr, "unexpected attribute form: DW_FORM_indirect"); |
a8329558 | 7354 | break; |
c906108c | 7355 | default: |
48cd0caa | 7356 | fprintf_unfiltered (gdb_stderr, "unsupported attribute form: %d.", |
c5aa993b | 7357 | die->attrs[i].form); |
c906108c | 7358 | } |
48cd0caa | 7359 | fprintf_unfiltered (gdb_stderr, "\n"); |
c906108c SS |
7360 | } |
7361 | } | |
7362 | ||
f9aca02d | 7363 | static void |
fba45db2 | 7364 | dump_die_list (struct die_info *die) |
c906108c SS |
7365 | { |
7366 | while (die) | |
7367 | { | |
7368 | dump_die (die); | |
639d11d3 DC |
7369 | if (die->child != NULL) |
7370 | dump_die_list (die->child); | |
7371 | if (die->sibling != NULL) | |
7372 | dump_die_list (die->sibling); | |
c906108c SS |
7373 | } |
7374 | } | |
7375 | ||
f9aca02d | 7376 | static void |
fba45db2 | 7377 | store_in_ref_table (unsigned int offset, struct die_info *die) |
c906108c SS |
7378 | { |
7379 | int h; | |
7380 | struct die_info *old; | |
7381 | ||
7382 | h = (offset % REF_HASH_SIZE); | |
7383 | old = die_ref_table[h]; | |
7384 | die->next_ref = old; | |
7385 | die_ref_table[h] = die; | |
7386 | } | |
7387 | ||
7388 | ||
7389 | static void | |
fba45db2 | 7390 | dwarf2_empty_hash_tables (void) |
c906108c SS |
7391 | { |
7392 | memset (die_ref_table, 0, sizeof (die_ref_table)); | |
7393 | } | |
7394 | ||
7395 | static unsigned int | |
e142c38c | 7396 | dwarf2_get_ref_die_offset (struct attribute *attr, struct dwarf2_cu *cu) |
c906108c SS |
7397 | { |
7398 | unsigned int result = 0; | |
7399 | ||
7400 | switch (attr->form) | |
7401 | { | |
7402 | case DW_FORM_ref_addr: | |
7403 | result = DW_ADDR (attr); | |
7404 | break; | |
7405 | case DW_FORM_ref1: | |
7406 | case DW_FORM_ref2: | |
7407 | case DW_FORM_ref4: | |
613e1657 | 7408 | case DW_FORM_ref8: |
c906108c | 7409 | case DW_FORM_ref_udata: |
e142c38c | 7410 | result = cu->header.offset + DW_UNSND (attr); |
c906108c SS |
7411 | break; |
7412 | default: | |
4d3c2250 KB |
7413 | complaint (&symfile_complaints, |
7414 | "unsupported die ref attribute form: '%s'", | |
7415 | dwarf_form_name (attr->form)); | |
c906108c SS |
7416 | } |
7417 | return result; | |
7418 | } | |
7419 | ||
a02abb62 JB |
7420 | /* Return the constant value held by the given attribute. Return -1 |
7421 | if the value held by the attribute is not constant. */ | |
7422 | ||
7423 | static int | |
7424 | dwarf2_get_attr_constant_value (struct attribute *attr, int default_value) | |
7425 | { | |
7426 | if (attr->form == DW_FORM_sdata) | |
7427 | return DW_SND (attr); | |
7428 | else if (attr->form == DW_FORM_udata | |
7429 | || attr->form == DW_FORM_data1 | |
7430 | || attr->form == DW_FORM_data2 | |
7431 | || attr->form == DW_FORM_data4 | |
7432 | || attr->form == DW_FORM_data8) | |
7433 | return DW_UNSND (attr); | |
7434 | else | |
7435 | { | |
7436 | complaint (&symfile_complaints, "Attribute value is not a constant (%s)", | |
7437 | dwarf_form_name (attr->form)); | |
7438 | return default_value; | |
7439 | } | |
7440 | } | |
7441 | ||
f9aca02d | 7442 | static struct die_info * |
fba45db2 | 7443 | follow_die_ref (unsigned int offset) |
c906108c SS |
7444 | { |
7445 | struct die_info *die; | |
7446 | int h; | |
7447 | ||
7448 | h = (offset % REF_HASH_SIZE); | |
7449 | die = die_ref_table[h]; | |
7450 | while (die) | |
7451 | { | |
7452 | if (die->offset == offset) | |
7453 | { | |
7454 | return die; | |
7455 | } | |
7456 | die = die->next_ref; | |
7457 | } | |
7458 | return NULL; | |
7459 | } | |
7460 | ||
7461 | static struct type * | |
e142c38c DJ |
7462 | dwarf2_fundamental_type (struct objfile *objfile, int typeid, |
7463 | struct dwarf2_cu *cu) | |
c906108c SS |
7464 | { |
7465 | if (typeid < 0 || typeid >= FT_NUM_MEMBERS) | |
7466 | { | |
659b0389 ML |
7467 | error ("Dwarf Error: internal error - invalid fundamental type id %d [in module %s]", |
7468 | typeid, objfile->name); | |
c906108c SS |
7469 | } |
7470 | ||
7471 | /* Look for this particular type in the fundamental type vector. If | |
7472 | one is not found, create and install one appropriate for the | |
7473 | current language and the current target machine. */ | |
7474 | ||
e142c38c | 7475 | if (cu->ftypes[typeid] == NULL) |
c906108c | 7476 | { |
e142c38c | 7477 | cu->ftypes[typeid] = cu->language_defn->la_fund_type (objfile, typeid); |
c906108c SS |
7478 | } |
7479 | ||
e142c38c | 7480 | return (cu->ftypes[typeid]); |
c906108c SS |
7481 | } |
7482 | ||
7483 | /* Decode simple location descriptions. | |
7484 | Given a pointer to a dwarf block that defines a location, compute | |
7485 | the location and return the value. | |
7486 | ||
4cecd739 DJ |
7487 | NOTE drow/2003-11-18: This function is called in two situations |
7488 | now: for the address of static or global variables (partial symbols | |
7489 | only) and for offsets into structures which are expected to be | |
7490 | (more or less) constant. The partial symbol case should go away, | |
7491 | and only the constant case should remain. That will let this | |
7492 | function complain more accurately. A few special modes are allowed | |
7493 | without complaint for global variables (for instance, global | |
7494 | register values and thread-local values). | |
c906108c SS |
7495 | |
7496 | A location description containing no operations indicates that the | |
4cecd739 | 7497 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
7498 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
7499 | callers will only want a very basic result and this can become a | |
7500 | complaint. | |
c906108c SS |
7501 | |
7502 | When the result is a register number, the global isreg flag is set, | |
7503 | otherwise it is cleared. | |
7504 | ||
c906108c SS |
7505 | Note that stack[0] is unused except as a default error return. |
7506 | Note that stack overflow is not yet handled. */ | |
7507 | ||
7508 | static CORE_ADDR | |
e7c27a73 | 7509 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 7510 | { |
e7c27a73 DJ |
7511 | struct objfile *objfile = cu->objfile; |
7512 | struct comp_unit_head *cu_header = &cu->header; | |
c906108c SS |
7513 | int i; |
7514 | int size = blk->size; | |
7515 | char *data = blk->data; | |
7516 | CORE_ADDR stack[64]; | |
7517 | int stacki; | |
7518 | unsigned int bytes_read, unsnd; | |
7519 | unsigned char op; | |
7520 | ||
7521 | i = 0; | |
7522 | stacki = 0; | |
7523 | stack[stacki] = 0; | |
7524 | isreg = 0; | |
c906108c SS |
7525 | |
7526 | while (i < size) | |
7527 | { | |
c906108c SS |
7528 | op = data[i++]; |
7529 | switch (op) | |
7530 | { | |
f1bea926 JM |
7531 | case DW_OP_lit0: |
7532 | case DW_OP_lit1: | |
7533 | case DW_OP_lit2: | |
7534 | case DW_OP_lit3: | |
7535 | case DW_OP_lit4: | |
7536 | case DW_OP_lit5: | |
7537 | case DW_OP_lit6: | |
7538 | case DW_OP_lit7: | |
7539 | case DW_OP_lit8: | |
7540 | case DW_OP_lit9: | |
7541 | case DW_OP_lit10: | |
7542 | case DW_OP_lit11: | |
7543 | case DW_OP_lit12: | |
7544 | case DW_OP_lit13: | |
7545 | case DW_OP_lit14: | |
7546 | case DW_OP_lit15: | |
7547 | case DW_OP_lit16: | |
7548 | case DW_OP_lit17: | |
7549 | case DW_OP_lit18: | |
7550 | case DW_OP_lit19: | |
7551 | case DW_OP_lit20: | |
7552 | case DW_OP_lit21: | |
7553 | case DW_OP_lit22: | |
7554 | case DW_OP_lit23: | |
7555 | case DW_OP_lit24: | |
7556 | case DW_OP_lit25: | |
7557 | case DW_OP_lit26: | |
7558 | case DW_OP_lit27: | |
7559 | case DW_OP_lit28: | |
7560 | case DW_OP_lit29: | |
7561 | case DW_OP_lit30: | |
7562 | case DW_OP_lit31: | |
7563 | stack[++stacki] = op - DW_OP_lit0; | |
7564 | break; | |
7565 | ||
c906108c SS |
7566 | case DW_OP_reg0: |
7567 | case DW_OP_reg1: | |
7568 | case DW_OP_reg2: | |
7569 | case DW_OP_reg3: | |
7570 | case DW_OP_reg4: | |
7571 | case DW_OP_reg5: | |
7572 | case DW_OP_reg6: | |
7573 | case DW_OP_reg7: | |
7574 | case DW_OP_reg8: | |
7575 | case DW_OP_reg9: | |
7576 | case DW_OP_reg10: | |
7577 | case DW_OP_reg11: | |
7578 | case DW_OP_reg12: | |
7579 | case DW_OP_reg13: | |
7580 | case DW_OP_reg14: | |
7581 | case DW_OP_reg15: | |
7582 | case DW_OP_reg16: | |
7583 | case DW_OP_reg17: | |
7584 | case DW_OP_reg18: | |
7585 | case DW_OP_reg19: | |
7586 | case DW_OP_reg20: | |
7587 | case DW_OP_reg21: | |
7588 | case DW_OP_reg22: | |
7589 | case DW_OP_reg23: | |
7590 | case DW_OP_reg24: | |
7591 | case DW_OP_reg25: | |
7592 | case DW_OP_reg26: | |
7593 | case DW_OP_reg27: | |
7594 | case DW_OP_reg28: | |
7595 | case DW_OP_reg29: | |
7596 | case DW_OP_reg30: | |
7597 | case DW_OP_reg31: | |
7598 | isreg = 1; | |
7599 | stack[++stacki] = op - DW_OP_reg0; | |
4cecd739 DJ |
7600 | if (i < size) |
7601 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
7602 | break; |
7603 | ||
7604 | case DW_OP_regx: | |
7605 | isreg = 1; | |
7606 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
7607 | i += bytes_read; | |
c906108c | 7608 | stack[++stacki] = unsnd; |
4cecd739 DJ |
7609 | if (i < size) |
7610 | dwarf2_complex_location_expr_complaint (); | |
c906108c SS |
7611 | break; |
7612 | ||
7613 | case DW_OP_addr: | |
107d2387 | 7614 | stack[++stacki] = read_address (objfile->obfd, &data[i], |
e7c27a73 | 7615 | cu, &bytes_read); |
107d2387 | 7616 | i += bytes_read; |
c906108c SS |
7617 | break; |
7618 | ||
7619 | case DW_OP_const1u: | |
7620 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
7621 | i += 1; | |
7622 | break; | |
7623 | ||
7624 | case DW_OP_const1s: | |
7625 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
7626 | i += 1; | |
7627 | break; | |
7628 | ||
7629 | case DW_OP_const2u: | |
7630 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
7631 | i += 2; | |
7632 | break; | |
7633 | ||
7634 | case DW_OP_const2s: | |
7635 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
7636 | i += 2; | |
7637 | break; | |
7638 | ||
7639 | case DW_OP_const4u: | |
7640 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
7641 | i += 4; | |
7642 | break; | |
7643 | ||
7644 | case DW_OP_const4s: | |
7645 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
7646 | i += 4; | |
7647 | break; | |
7648 | ||
7649 | case DW_OP_constu: | |
7650 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
c5aa993b | 7651 | &bytes_read); |
c906108c SS |
7652 | i += bytes_read; |
7653 | break; | |
7654 | ||
7655 | case DW_OP_consts: | |
7656 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
7657 | i += bytes_read; | |
7658 | break; | |
7659 | ||
f1bea926 JM |
7660 | case DW_OP_dup: |
7661 | stack[stacki + 1] = stack[stacki]; | |
7662 | stacki++; | |
7663 | break; | |
7664 | ||
c906108c SS |
7665 | case DW_OP_plus: |
7666 | stack[stacki - 1] += stack[stacki]; | |
7667 | stacki--; | |
7668 | break; | |
7669 | ||
7670 | case DW_OP_plus_uconst: | |
7671 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
7672 | i += bytes_read; | |
7673 | break; | |
7674 | ||
7675 | case DW_OP_minus: | |
f1bea926 | 7676 | stack[stacki - 1] -= stack[stacki]; |
c906108c SS |
7677 | stacki--; |
7678 | break; | |
7679 | ||
7a292a7a | 7680 | case DW_OP_deref: |
7a292a7a | 7681 | /* If we're not the last op, then we definitely can't encode |
4cecd739 DJ |
7682 | this using GDB's address_class enum. This is valid for partial |
7683 | global symbols, although the variable's address will be bogus | |
7684 | in the psymtab. */ | |
7a292a7a | 7685 | if (i < size) |
4d3c2250 | 7686 | dwarf2_complex_location_expr_complaint (); |
7a292a7a SS |
7687 | break; |
7688 | ||
9d774e44 | 7689 | case DW_OP_GNU_push_tls_address: |
9d774e44 EZ |
7690 | /* The top of the stack has the offset from the beginning |
7691 | of the thread control block at which the variable is located. */ | |
7692 | /* Nothing should follow this operator, so the top of stack would | |
7693 | be returned. */ | |
4cecd739 DJ |
7694 | /* This is valid for partial global symbols, but the variable's |
7695 | address will be bogus in the psymtab. */ | |
9d774e44 | 7696 | if (i < size) |
4d3c2250 | 7697 | dwarf2_complex_location_expr_complaint (); |
9d774e44 EZ |
7698 | break; |
7699 | ||
c906108c | 7700 | default: |
4d3c2250 KB |
7701 | complaint (&symfile_complaints, "unsupported stack op: '%s'", |
7702 | dwarf_stack_op_name (op)); | |
c906108c SS |
7703 | return (stack[stacki]); |
7704 | } | |
7705 | } | |
7706 | return (stack[stacki]); | |
7707 | } | |
7708 | ||
7709 | /* memory allocation interface */ | |
7710 | ||
c906108c | 7711 | static void |
4efb68b1 | 7712 | dwarf2_free_tmp_obstack (void *ignore) |
c906108c SS |
7713 | { |
7714 | obstack_free (&dwarf2_tmp_obstack, NULL); | |
7715 | } | |
7716 | ||
7717 | static struct dwarf_block * | |
fba45db2 | 7718 | dwarf_alloc_block (void) |
c906108c SS |
7719 | { |
7720 | struct dwarf_block *blk; | |
7721 | ||
7722 | blk = (struct dwarf_block *) | |
7723 | obstack_alloc (&dwarf2_tmp_obstack, sizeof (struct dwarf_block)); | |
7724 | return (blk); | |
7725 | } | |
7726 | ||
7727 | static struct abbrev_info * | |
f3dd6933 | 7728 | dwarf_alloc_abbrev (struct dwarf2_cu *cu) |
c906108c SS |
7729 | { |
7730 | struct abbrev_info *abbrev; | |
7731 | ||
f3dd6933 DJ |
7732 | abbrev = (struct abbrev_info *) |
7733 | obstack_alloc (&cu->abbrev_obstack, sizeof (struct abbrev_info)); | |
c906108c SS |
7734 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
7735 | return (abbrev); | |
7736 | } | |
7737 | ||
7738 | static struct die_info * | |
fba45db2 | 7739 | dwarf_alloc_die (void) |
c906108c SS |
7740 | { |
7741 | struct die_info *die; | |
7742 | ||
7743 | die = (struct die_info *) xmalloc (sizeof (struct die_info)); | |
7744 | memset (die, 0, sizeof (struct die_info)); | |
7745 | return (die); | |
7746 | } | |
2e276125 JB |
7747 | |
7748 | \f | |
7749 | /* Macro support. */ | |
7750 | ||
7751 | ||
7752 | /* Return the full name of file number I in *LH's file name table. | |
7753 | Use COMP_DIR as the name of the current directory of the | |
7754 | compilation. The result is allocated using xmalloc; the caller is | |
7755 | responsible for freeing it. */ | |
7756 | static char * | |
7757 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
7758 | { | |
7759 | struct file_entry *fe = &lh->file_names[file - 1]; | |
7760 | ||
7761 | if (IS_ABSOLUTE_PATH (fe->name)) | |
7762 | return xstrdup (fe->name); | |
7763 | else | |
7764 | { | |
7765 | const char *dir; | |
7766 | int dir_len; | |
7767 | char *full_name; | |
7768 | ||
7769 | if (fe->dir_index) | |
7770 | dir = lh->include_dirs[fe->dir_index - 1]; | |
7771 | else | |
7772 | dir = comp_dir; | |
7773 | ||
7774 | if (dir) | |
7775 | { | |
7776 | dir_len = strlen (dir); | |
7777 | full_name = xmalloc (dir_len + 1 + strlen (fe->name) + 1); | |
7778 | strcpy (full_name, dir); | |
7779 | full_name[dir_len] = '/'; | |
7780 | strcpy (full_name + dir_len + 1, fe->name); | |
7781 | return full_name; | |
7782 | } | |
7783 | else | |
7784 | return xstrdup (fe->name); | |
7785 | } | |
7786 | } | |
7787 | ||
7788 | ||
7789 | static struct macro_source_file * | |
7790 | macro_start_file (int file, int line, | |
7791 | struct macro_source_file *current_file, | |
7792 | const char *comp_dir, | |
7793 | struct line_header *lh, struct objfile *objfile) | |
7794 | { | |
7795 | /* The full name of this source file. */ | |
7796 | char *full_name = file_full_name (file, lh, comp_dir); | |
7797 | ||
7798 | /* We don't create a macro table for this compilation unit | |
7799 | at all until we actually get a filename. */ | |
7800 | if (! pending_macros) | |
4a146b47 | 7801 | pending_macros = new_macro_table (&objfile->objfile_obstack, |
af5f3db6 | 7802 | objfile->macro_cache); |
2e276125 JB |
7803 | |
7804 | if (! current_file) | |
7805 | /* If we have no current file, then this must be the start_file | |
7806 | directive for the compilation unit's main source file. */ | |
7807 | current_file = macro_set_main (pending_macros, full_name); | |
7808 | else | |
7809 | current_file = macro_include (current_file, line, full_name); | |
7810 | ||
7811 | xfree (full_name); | |
7812 | ||
7813 | return current_file; | |
7814 | } | |
7815 | ||
7816 | ||
7817 | /* Copy the LEN characters at BUF to a xmalloc'ed block of memory, | |
7818 | followed by a null byte. */ | |
7819 | static char * | |
7820 | copy_string (const char *buf, int len) | |
7821 | { | |
7822 | char *s = xmalloc (len + 1); | |
7823 | memcpy (s, buf, len); | |
7824 | s[len] = '\0'; | |
7825 | ||
7826 | return s; | |
7827 | } | |
7828 | ||
7829 | ||
7830 | static const char * | |
7831 | consume_improper_spaces (const char *p, const char *body) | |
7832 | { | |
7833 | if (*p == ' ') | |
7834 | { | |
4d3c2250 KB |
7835 | complaint (&symfile_complaints, |
7836 | "macro definition contains spaces in formal argument list:\n`%s'", | |
7837 | body); | |
2e276125 JB |
7838 | |
7839 | while (*p == ' ') | |
7840 | p++; | |
7841 | } | |
7842 | ||
7843 | return p; | |
7844 | } | |
7845 | ||
7846 | ||
7847 | static void | |
7848 | parse_macro_definition (struct macro_source_file *file, int line, | |
7849 | const char *body) | |
7850 | { | |
7851 | const char *p; | |
7852 | ||
7853 | /* The body string takes one of two forms. For object-like macro | |
7854 | definitions, it should be: | |
7855 | ||
7856 | <macro name> " " <definition> | |
7857 | ||
7858 | For function-like macro definitions, it should be: | |
7859 | ||
7860 | <macro name> "() " <definition> | |
7861 | or | |
7862 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
7863 | ||
7864 | Spaces may appear only where explicitly indicated, and in the | |
7865 | <definition>. | |
7866 | ||
7867 | The Dwarf 2 spec says that an object-like macro's name is always | |
7868 | followed by a space, but versions of GCC around March 2002 omit | |
7869 | the space when the macro's definition is the empty string. | |
7870 | ||
7871 | The Dwarf 2 spec says that there should be no spaces between the | |
7872 | formal arguments in a function-like macro's formal argument list, | |
7873 | but versions of GCC around March 2002 include spaces after the | |
7874 | commas. */ | |
7875 | ||
7876 | ||
7877 | /* Find the extent of the macro name. The macro name is terminated | |
7878 | by either a space or null character (for an object-like macro) or | |
7879 | an opening paren (for a function-like macro). */ | |
7880 | for (p = body; *p; p++) | |
7881 | if (*p == ' ' || *p == '(') | |
7882 | break; | |
7883 | ||
7884 | if (*p == ' ' || *p == '\0') | |
7885 | { | |
7886 | /* It's an object-like macro. */ | |
7887 | int name_len = p - body; | |
7888 | char *name = copy_string (body, name_len); | |
7889 | const char *replacement; | |
7890 | ||
7891 | if (*p == ' ') | |
7892 | replacement = body + name_len + 1; | |
7893 | else | |
7894 | { | |
4d3c2250 | 7895 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7896 | replacement = body + name_len; |
7897 | } | |
7898 | ||
7899 | macro_define_object (file, line, name, replacement); | |
7900 | ||
7901 | xfree (name); | |
7902 | } | |
7903 | else if (*p == '(') | |
7904 | { | |
7905 | /* It's a function-like macro. */ | |
7906 | char *name = copy_string (body, p - body); | |
7907 | int argc = 0; | |
7908 | int argv_size = 1; | |
7909 | char **argv = xmalloc (argv_size * sizeof (*argv)); | |
7910 | ||
7911 | p++; | |
7912 | ||
7913 | p = consume_improper_spaces (p, body); | |
7914 | ||
7915 | /* Parse the formal argument list. */ | |
7916 | while (*p && *p != ')') | |
7917 | { | |
7918 | /* Find the extent of the current argument name. */ | |
7919 | const char *arg_start = p; | |
7920 | ||
7921 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
7922 | p++; | |
7923 | ||
7924 | if (! *p || p == arg_start) | |
4d3c2250 | 7925 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7926 | else |
7927 | { | |
7928 | /* Make sure argv has room for the new argument. */ | |
7929 | if (argc >= argv_size) | |
7930 | { | |
7931 | argv_size *= 2; | |
7932 | argv = xrealloc (argv, argv_size * sizeof (*argv)); | |
7933 | } | |
7934 | ||
7935 | argv[argc++] = copy_string (arg_start, p - arg_start); | |
7936 | } | |
7937 | ||
7938 | p = consume_improper_spaces (p, body); | |
7939 | ||
7940 | /* Consume the comma, if present. */ | |
7941 | if (*p == ',') | |
7942 | { | |
7943 | p++; | |
7944 | ||
7945 | p = consume_improper_spaces (p, body); | |
7946 | } | |
7947 | } | |
7948 | ||
7949 | if (*p == ')') | |
7950 | { | |
7951 | p++; | |
7952 | ||
7953 | if (*p == ' ') | |
7954 | /* Perfectly formed definition, no complaints. */ | |
7955 | macro_define_function (file, line, name, | |
7956 | argc, (const char **) argv, | |
7957 | p + 1); | |
7958 | else if (*p == '\0') | |
7959 | { | |
7960 | /* Complain, but do define it. */ | |
4d3c2250 | 7961 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7962 | macro_define_function (file, line, name, |
7963 | argc, (const char **) argv, | |
7964 | p); | |
7965 | } | |
7966 | else | |
7967 | /* Just complain. */ | |
4d3c2250 | 7968 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7969 | } |
7970 | else | |
7971 | /* Just complain. */ | |
4d3c2250 | 7972 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7973 | |
7974 | xfree (name); | |
7975 | { | |
7976 | int i; | |
7977 | ||
7978 | for (i = 0; i < argc; i++) | |
7979 | xfree (argv[i]); | |
7980 | } | |
7981 | xfree (argv); | |
7982 | } | |
7983 | else | |
4d3c2250 | 7984 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
7985 | } |
7986 | ||
7987 | ||
7988 | static void | |
7989 | dwarf_decode_macros (struct line_header *lh, unsigned int offset, | |
7990 | char *comp_dir, bfd *abfd, | |
e7c27a73 | 7991 | struct dwarf2_cu *cu) |
2e276125 JB |
7992 | { |
7993 | char *mac_ptr, *mac_end; | |
7994 | struct macro_source_file *current_file = 0; | |
7995 | ||
6502dd73 | 7996 | if (dwarf2_per_objfile->macinfo_buffer == NULL) |
2e276125 | 7997 | { |
4d3c2250 | 7998 | complaint (&symfile_complaints, "missing .debug_macinfo section"); |
2e276125 JB |
7999 | return; |
8000 | } | |
8001 | ||
6502dd73 DJ |
8002 | mac_ptr = dwarf2_per_objfile->macinfo_buffer + offset; |
8003 | mac_end = dwarf2_per_objfile->macinfo_buffer | |
8004 | + dwarf2_per_objfile->macinfo_size; | |
2e276125 JB |
8005 | |
8006 | for (;;) | |
8007 | { | |
8008 | enum dwarf_macinfo_record_type macinfo_type; | |
8009 | ||
8010 | /* Do we at least have room for a macinfo type byte? */ | |
8011 | if (mac_ptr >= mac_end) | |
8012 | { | |
4d3c2250 | 8013 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
8014 | return; |
8015 | } | |
8016 | ||
8017 | macinfo_type = read_1_byte (abfd, mac_ptr); | |
8018 | mac_ptr++; | |
8019 | ||
8020 | switch (macinfo_type) | |
8021 | { | |
8022 | /* A zero macinfo type indicates the end of the macro | |
8023 | information. */ | |
8024 | case 0: | |
8025 | return; | |
8026 | ||
8027 | case DW_MACINFO_define: | |
8028 | case DW_MACINFO_undef: | |
8029 | { | |
8030 | int bytes_read; | |
8031 | int line; | |
8032 | char *body; | |
8033 | ||
8034 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
8035 | mac_ptr += bytes_read; | |
8036 | body = read_string (abfd, mac_ptr, &bytes_read); | |
8037 | mac_ptr += bytes_read; | |
8038 | ||
8039 | if (! current_file) | |
4d3c2250 KB |
8040 | complaint (&symfile_complaints, |
8041 | "debug info gives macro %s outside of any file: %s", | |
8042 | macinfo_type == | |
8043 | DW_MACINFO_define ? "definition" : macinfo_type == | |
8044 | DW_MACINFO_undef ? "undefinition" : | |
8045 | "something-or-other", body); | |
2e276125 JB |
8046 | else |
8047 | { | |
8048 | if (macinfo_type == DW_MACINFO_define) | |
8049 | parse_macro_definition (current_file, line, body); | |
8050 | else if (macinfo_type == DW_MACINFO_undef) | |
8051 | macro_undef (current_file, line, body); | |
8052 | } | |
8053 | } | |
8054 | break; | |
8055 | ||
8056 | case DW_MACINFO_start_file: | |
8057 | { | |
8058 | int bytes_read; | |
8059 | int line, file; | |
8060 | ||
8061 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
8062 | mac_ptr += bytes_read; | |
8063 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
8064 | mac_ptr += bytes_read; | |
8065 | ||
8066 | current_file = macro_start_file (file, line, | |
8067 | current_file, comp_dir, | |
e7c27a73 | 8068 | lh, cu->objfile); |
2e276125 JB |
8069 | } |
8070 | break; | |
8071 | ||
8072 | case DW_MACINFO_end_file: | |
8073 | if (! current_file) | |
4d3c2250 KB |
8074 | complaint (&symfile_complaints, |
8075 | "macro debug info has an unmatched `close_file' directive"); | |
2e276125 JB |
8076 | else |
8077 | { | |
8078 | current_file = current_file->included_by; | |
8079 | if (! current_file) | |
8080 | { | |
8081 | enum dwarf_macinfo_record_type next_type; | |
8082 | ||
8083 | /* GCC circa March 2002 doesn't produce the zero | |
8084 | type byte marking the end of the compilation | |
8085 | unit. Complain if it's not there, but exit no | |
8086 | matter what. */ | |
8087 | ||
8088 | /* Do we at least have room for a macinfo type byte? */ | |
8089 | if (mac_ptr >= mac_end) | |
8090 | { | |
4d3c2250 | 8091 | dwarf2_macros_too_long_complaint (); |
2e276125 JB |
8092 | return; |
8093 | } | |
8094 | ||
8095 | /* We don't increment mac_ptr here, so this is just | |
8096 | a look-ahead. */ | |
8097 | next_type = read_1_byte (abfd, mac_ptr); | |
8098 | if (next_type != 0) | |
4d3c2250 KB |
8099 | complaint (&symfile_complaints, |
8100 | "no terminating 0-type entry for macros in `.debug_macinfo' section"); | |
2e276125 JB |
8101 | |
8102 | return; | |
8103 | } | |
8104 | } | |
8105 | break; | |
8106 | ||
8107 | case DW_MACINFO_vendor_ext: | |
8108 | { | |
8109 | int bytes_read; | |
8110 | int constant; | |
8111 | char *string; | |
8112 | ||
8113 | constant = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
8114 | mac_ptr += bytes_read; | |
8115 | string = read_string (abfd, mac_ptr, &bytes_read); | |
8116 | mac_ptr += bytes_read; | |
8117 | ||
8118 | /* We don't recognize any vendor extensions. */ | |
8119 | } | |
8120 | break; | |
8121 | } | |
8122 | } | |
8123 | } | |
8e19ed76 PS |
8124 | |
8125 | /* Check if the attribute's form is a DW_FORM_block* | |
8126 | if so return true else false. */ | |
8127 | static int | |
8128 | attr_form_is_block (struct attribute *attr) | |
8129 | { | |
8130 | return (attr == NULL ? 0 : | |
8131 | attr->form == DW_FORM_block1 | |
8132 | || attr->form == DW_FORM_block2 | |
8133 | || attr->form == DW_FORM_block4 | |
8134 | || attr->form == DW_FORM_block); | |
8135 | } | |
4c2df51b DJ |
8136 | |
8137 | static void | |
8138 | dwarf2_symbol_mark_computed (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 8139 | struct dwarf2_cu *cu) |
4c2df51b | 8140 | { |
0d53c4c4 | 8141 | if (attr->form == DW_FORM_data4 || attr->form == DW_FORM_data8) |
4c2df51b | 8142 | { |
0d53c4c4 | 8143 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 8144 | |
4a146b47 | 8145 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 8146 | sizeof (struct dwarf2_loclist_baton)); |
e7c27a73 | 8147 | baton->objfile = cu->objfile; |
4c2df51b | 8148 | |
0d53c4c4 DJ |
8149 | /* We don't know how long the location list is, but make sure we |
8150 | don't run off the edge of the section. */ | |
6502dd73 DJ |
8151 | baton->size = dwarf2_per_objfile->loc_size - DW_UNSND (attr); |
8152 | baton->data = dwarf2_per_objfile->loc_buffer + DW_UNSND (attr); | |
e7c27a73 DJ |
8153 | baton->base_address = cu->header.base_address; |
8154 | if (cu->header.base_known == 0) | |
0d53c4c4 DJ |
8155 | complaint (&symfile_complaints, |
8156 | "Location list used without specifying the CU base address."); | |
4c2df51b | 8157 | |
a67af2b9 | 8158 | SYMBOL_OPS (sym) = &dwarf2_loclist_funcs; |
0d53c4c4 DJ |
8159 | SYMBOL_LOCATION_BATON (sym) = baton; |
8160 | } | |
8161 | else | |
8162 | { | |
8163 | struct dwarf2_locexpr_baton *baton; | |
8164 | ||
4a146b47 | 8165 | baton = obstack_alloc (&cu->objfile->objfile_obstack, |
0d53c4c4 | 8166 | sizeof (struct dwarf2_locexpr_baton)); |
e7c27a73 | 8167 | baton->objfile = cu->objfile; |
0d53c4c4 DJ |
8168 | |
8169 | if (attr_form_is_block (attr)) | |
8170 | { | |
8171 | /* Note that we're just copying the block's data pointer | |
8172 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
8173 | info_buffer for SYM's objfile; right now we never release |
8174 | that buffer, but when we do clean up properly this may | |
8175 | need to change. */ | |
0d53c4c4 DJ |
8176 | baton->size = DW_BLOCK (attr)->size; |
8177 | baton->data = DW_BLOCK (attr)->data; | |
8178 | } | |
8179 | else | |
8180 | { | |
8181 | dwarf2_invalid_attrib_class_complaint ("location description", | |
8182 | SYMBOL_NATURAL_NAME (sym)); | |
8183 | baton->size = 0; | |
8184 | baton->data = NULL; | |
8185 | } | |
8186 | ||
a67af2b9 | 8187 | SYMBOL_OPS (sym) = &dwarf2_locexpr_funcs; |
0d53c4c4 DJ |
8188 | SYMBOL_LOCATION_BATON (sym) = baton; |
8189 | } | |
4c2df51b | 8190 | } |
6502dd73 DJ |
8191 | |
8192 | void _initialize_dwarf2_read (void); | |
8193 | ||
8194 | void | |
8195 | _initialize_dwarf2_read (void) | |
8196 | { | |
8197 | dwarf2_objfile_data_key = register_objfile_data (); | |
8198 | } |