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