Commit | Line | Data |
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c906108c | 1 | /* DWARF 2 debugging format support for GDB. |
917c78fc | 2 | |
42a4f53d | 3 | Copyright (C) 1994-2019 Free Software Foundation, Inc. |
c906108c SS |
4 | |
5 | Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology, | |
6 | Inc. with support from Florida State University (under contract | |
7 | with the Ada Joint Program Office), and Silicon Graphics, Inc. | |
8 | Initial contribution by Brent Benson, Harris Computer Systems, Inc., | |
9 | based on Fred Fish's (Cygnus Support) implementation of DWARF 1 | |
7ce59000 | 10 | support. |
c906108c | 11 | |
c5aa993b | 12 | This file is part of GDB. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is free software; you can redistribute it and/or modify |
15 | it under the terms of the GNU General Public License as published by | |
a9762ec7 JB |
16 | the Free Software Foundation; either version 3 of the License, or |
17 | (at your option) any later version. | |
c906108c | 18 | |
a9762ec7 JB |
19 | This program is distributed in the hope that it will be useful, |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
c906108c | 23 | |
c5aa993b | 24 | You should have received a copy of the GNU General Public License |
a9762ec7 | 25 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 26 | |
21b2bd31 DE |
27 | /* FIXME: Various die-reading functions need to be more careful with |
28 | reading off the end of the section. | |
29 | E.g., load_partial_dies, read_partial_die. */ | |
30 | ||
c906108c | 31 | #include "defs.h" |
4de283e4 | 32 | #include "dwarf2read.h" |
d55e5aa6 TT |
33 | #include "dwarf-index-cache.h" |
34 | #include "dwarf-index-common.h" | |
4de283e4 TT |
35 | #include "bfd.h" |
36 | #include "elf-bfd.h" | |
37 | #include "symtab.h" | |
38 | #include "gdbtypes.h" | |
39 | #include "objfiles.h" | |
d55e5aa6 | 40 | #include "dwarf2.h" |
4de283e4 TT |
41 | #include "buildsym.h" |
42 | #include "demangle.h" | |
43 | #include "gdb-demangle.h" | |
44 | #include "expression.h" | |
45 | #include "filenames.h" /* for DOSish file names */ | |
46 | #include "macrotab.h" | |
47 | #include "language.h" | |
48 | #include "complaints.h" | |
d55e5aa6 TT |
49 | #include "dwarf2expr.h" |
50 | #include "dwarf2loc.h" | |
4de283e4 TT |
51 | #include "cp-support.h" |
52 | #include "hashtab.h" | |
53 | #include "command.h" | |
d55e5aa6 | 54 | #include "gdbcmd.h" |
4de283e4 TT |
55 | #include "block.h" |
56 | #include "addrmap.h" | |
57 | #include "typeprint.h" | |
58 | #include "psympriv.h" | |
59 | #include <sys/stat.h> | |
60 | #include "completer.h" | |
61 | #include "common/vec.h" | |
62 | #include "c-lang.h" | |
d55e5aa6 | 63 | #include "go-lang.h" |
4de283e4 TT |
64 | #include "valprint.h" |
65 | #include "gdbcore.h" /* for gnutarget */ | |
66 | #include "gdb/gdb-index.h" | |
67 | #include <ctype.h> | |
68 | #include "gdb_bfd.h" | |
69 | #include "f-lang.h" | |
70 | #include "source.h" | |
71 | #include "common/filestuff.h" | |
72 | #include "build-id.h" | |
d55e5aa6 | 73 | #include "namespace.h" |
4de283e4 TT |
74 | #include "common/gdb_unlinker.h" |
75 | #include "common/function-view.h" | |
76 | #include "common/gdb_optional.h" | |
77 | #include "common/underlying.h" | |
78 | #include "common/byte-vector.h" | |
79 | #include "common/hash_enum.h" | |
80 | #include "filename-seen-cache.h" | |
b32b108a | 81 | #include "producer.h" |
4de283e4 TT |
82 | #include <fcntl.h> |
83 | #include <sys/types.h> | |
84 | #include <algorithm> | |
85 | #include <unordered_set> | |
86 | #include <unordered_map> | |
87 | #include "common/selftest.h" | |
88 | #include <cmath> | |
89 | #include <set> | |
90 | #include <forward_list> | |
c9317f21 | 91 | #include "rust-lang.h" |
4de283e4 | 92 | #include "common/pathstuff.h" |
437afbb8 | 93 | |
73be47f5 DE |
94 | /* When == 1, print basic high level tracing messages. |
95 | When > 1, be more verbose. | |
b4f54984 DE |
96 | This is in contrast to the low level DIE reading of dwarf_die_debug. */ |
97 | static unsigned int dwarf_read_debug = 0; | |
45cfd468 | 98 | |
d97bc12b | 99 | /* When non-zero, dump DIEs after they are read in. */ |
b4f54984 | 100 | static unsigned int dwarf_die_debug = 0; |
d97bc12b | 101 | |
27e0867f DE |
102 | /* When non-zero, dump line number entries as they are read in. */ |
103 | static unsigned int dwarf_line_debug = 0; | |
104 | ||
900e11f9 JK |
105 | /* When non-zero, cross-check physname against demangler. */ |
106 | static int check_physname = 0; | |
107 | ||
481860b3 | 108 | /* When non-zero, do not reject deprecated .gdb_index sections. */ |
e615022a | 109 | static int use_deprecated_index_sections = 0; |
481860b3 | 110 | |
5bfd760d | 111 | static const struct objfile_key<dwarf2_per_objfile> dwarf2_objfile_data_key; |
6502dd73 | 112 | |
f1e6e072 TT |
113 | /* The "aclass" indices for various kinds of computed DWARF symbols. */ |
114 | ||
115 | static int dwarf2_locexpr_index; | |
116 | static int dwarf2_loclist_index; | |
117 | static int dwarf2_locexpr_block_index; | |
118 | static int dwarf2_loclist_block_index; | |
119 | ||
3f563c84 PA |
120 | /* An index into a (C++) symbol name component in a symbol name as |
121 | recorded in the mapped_index's symbol table. For each C++ symbol | |
122 | in the symbol table, we record one entry for the start of each | |
123 | component in the symbol in a table of name components, and then | |
124 | sort the table, in order to be able to binary search symbol names, | |
125 | ignoring leading namespaces, both completion and regular look up. | |
126 | For example, for symbol "A::B::C", we'll have an entry that points | |
127 | to "A::B::C", another that points to "B::C", and another for "C". | |
128 | Note that function symbols in GDB index have no parameter | |
129 | information, just the function/method names. You can convert a | |
130 | name_component to a "const char *" using the | |
131 | 'mapped_index::symbol_name_at(offset_type)' method. */ | |
132 | ||
133 | struct name_component | |
134 | { | |
135 | /* Offset in the symbol name where the component starts. Stored as | |
136 | a (32-bit) offset instead of a pointer to save memory and improve | |
137 | locality on 64-bit architectures. */ | |
138 | offset_type name_offset; | |
139 | ||
140 | /* The symbol's index in the symbol and constant pool tables of a | |
141 | mapped_index. */ | |
142 | offset_type idx; | |
143 | }; | |
144 | ||
44ed8f3e PA |
145 | /* Base class containing bits shared by both .gdb_index and |
146 | .debug_name indexes. */ | |
147 | ||
148 | struct mapped_index_base | |
149 | { | |
22ca247e TT |
150 | mapped_index_base () = default; |
151 | DISABLE_COPY_AND_ASSIGN (mapped_index_base); | |
152 | ||
44ed8f3e PA |
153 | /* The name_component table (a sorted vector). See name_component's |
154 | description above. */ | |
155 | std::vector<name_component> name_components; | |
156 | ||
157 | /* How NAME_COMPONENTS is sorted. */ | |
158 | enum case_sensitivity name_components_casing; | |
159 | ||
160 | /* Return the number of names in the symbol table. */ | |
161 | virtual size_t symbol_name_count () const = 0; | |
162 | ||
163 | /* Get the name of the symbol at IDX in the symbol table. */ | |
164 | virtual const char *symbol_name_at (offset_type idx) const = 0; | |
165 | ||
166 | /* Return whether the name at IDX in the symbol table should be | |
167 | ignored. */ | |
168 | virtual bool symbol_name_slot_invalid (offset_type idx) const | |
169 | { | |
170 | return false; | |
171 | } | |
172 | ||
173 | /* Build the symbol name component sorted vector, if we haven't | |
174 | yet. */ | |
175 | void build_name_components (); | |
176 | ||
177 | /* Returns the lower (inclusive) and upper (exclusive) bounds of the | |
178 | possible matches for LN_NO_PARAMS in the name component | |
179 | vector. */ | |
180 | std::pair<std::vector<name_component>::const_iterator, | |
181 | std::vector<name_component>::const_iterator> | |
182 | find_name_components_bounds (const lookup_name_info &ln_no_params) const; | |
183 | ||
184 | /* Prevent deleting/destroying via a base class pointer. */ | |
185 | protected: | |
186 | ~mapped_index_base() = default; | |
187 | }; | |
188 | ||
9291a0cd TT |
189 | /* A description of the mapped index. The file format is described in |
190 | a comment by the code that writes the index. */ | |
fc898b42 | 191 | struct mapped_index final : public mapped_index_base |
9291a0cd | 192 | { |
f00a2de2 PA |
193 | /* A slot/bucket in the symbol table hash. */ |
194 | struct symbol_table_slot | |
195 | { | |
196 | const offset_type name; | |
197 | const offset_type vec; | |
198 | }; | |
199 | ||
559a7a62 | 200 | /* Index data format version. */ |
3063847f | 201 | int version = 0; |
559a7a62 | 202 | |
f00a2de2 PA |
203 | /* The address table data. */ |
204 | gdb::array_view<const gdb_byte> address_table; | |
b11b1f88 | 205 | |
3876f04e | 206 | /* The symbol table, implemented as a hash table. */ |
f00a2de2 | 207 | gdb::array_view<symbol_table_slot> symbol_table; |
b11b1f88 | 208 | |
9291a0cd | 209 | /* A pointer to the constant pool. */ |
3063847f | 210 | const char *constant_pool = nullptr; |
3f563c84 | 211 | |
44ed8f3e PA |
212 | bool symbol_name_slot_invalid (offset_type idx) const override |
213 | { | |
214 | const auto &bucket = this->symbol_table[idx]; | |
9ab08412 | 215 | return bucket.name == 0 && bucket.vec == 0; |
44ed8f3e | 216 | } |
5c58de74 | 217 | |
3f563c84 PA |
218 | /* Convenience method to get at the name of the symbol at IDX in the |
219 | symbol table. */ | |
44ed8f3e | 220 | const char *symbol_name_at (offset_type idx) const override |
f00a2de2 | 221 | { return this->constant_pool + MAYBE_SWAP (this->symbol_table[idx].name); } |
5c58de74 | 222 | |
44ed8f3e PA |
223 | size_t symbol_name_count () const override |
224 | { return this->symbol_table.size (); } | |
9291a0cd TT |
225 | }; |
226 | ||
927aa2e7 JK |
227 | /* A description of the mapped .debug_names. |
228 | Uninitialized map has CU_COUNT 0. */ | |
fc898b42 | 229 | struct mapped_debug_names final : public mapped_index_base |
927aa2e7 | 230 | { |
ed2dc618 SM |
231 | mapped_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile_) |
232 | : dwarf2_per_objfile (dwarf2_per_objfile_) | |
233 | {} | |
234 | ||
235 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
927aa2e7 JK |
236 | bfd_endian dwarf5_byte_order; |
237 | bool dwarf5_is_dwarf64; | |
238 | bool augmentation_is_gdb; | |
239 | uint8_t offset_size; | |
240 | uint32_t cu_count = 0; | |
241 | uint32_t tu_count, bucket_count, name_count; | |
242 | const gdb_byte *cu_table_reordered, *tu_table_reordered; | |
243 | const uint32_t *bucket_table_reordered, *hash_table_reordered; | |
244 | const gdb_byte *name_table_string_offs_reordered; | |
245 | const gdb_byte *name_table_entry_offs_reordered; | |
246 | const gdb_byte *entry_pool; | |
247 | ||
248 | struct index_val | |
249 | { | |
250 | ULONGEST dwarf_tag; | |
251 | struct attr | |
252 | { | |
253 | /* Attribute name DW_IDX_*. */ | |
254 | ULONGEST dw_idx; | |
255 | ||
256 | /* Attribute form DW_FORM_*. */ | |
257 | ULONGEST form; | |
258 | ||
259 | /* Value if FORM is DW_FORM_implicit_const. */ | |
260 | LONGEST implicit_const; | |
261 | }; | |
262 | std::vector<attr> attr_vec; | |
263 | }; | |
264 | ||
265 | std::unordered_map<ULONGEST, index_val> abbrev_map; | |
266 | ||
267 | const char *namei_to_name (uint32_t namei) const; | |
44ed8f3e PA |
268 | |
269 | /* Implementation of the mapped_index_base virtual interface, for | |
270 | the name_components cache. */ | |
271 | ||
272 | const char *symbol_name_at (offset_type idx) const override | |
273 | { return namei_to_name (idx); } | |
274 | ||
275 | size_t symbol_name_count () const override | |
276 | { return this->name_count; } | |
927aa2e7 JK |
277 | }; |
278 | ||
cd4fb1b2 | 279 | /* See dwarf2read.h. */ |
ed2dc618 | 280 | |
cd4fb1b2 | 281 | dwarf2_per_objfile * |
ed2dc618 SM |
282 | get_dwarf2_per_objfile (struct objfile *objfile) |
283 | { | |
5bfd760d | 284 | return dwarf2_objfile_data_key.get (objfile); |
ed2dc618 | 285 | } |
c906108c | 286 | |
251d32d9 | 287 | /* Default names of the debugging sections. */ |
c906108c | 288 | |
233a11ab CS |
289 | /* Note that if the debugging section has been compressed, it might |
290 | have a name like .zdebug_info. */ | |
291 | ||
9cdd5dbd DE |
292 | static const struct dwarf2_debug_sections dwarf2_elf_names = |
293 | { | |
251d32d9 TG |
294 | { ".debug_info", ".zdebug_info" }, |
295 | { ".debug_abbrev", ".zdebug_abbrev" }, | |
296 | { ".debug_line", ".zdebug_line" }, | |
297 | { ".debug_loc", ".zdebug_loc" }, | |
43988095 | 298 | { ".debug_loclists", ".zdebug_loclists" }, |
251d32d9 | 299 | { ".debug_macinfo", ".zdebug_macinfo" }, |
cf2c3c16 | 300 | { ".debug_macro", ".zdebug_macro" }, |
251d32d9 | 301 | { ".debug_str", ".zdebug_str" }, |
43988095 | 302 | { ".debug_line_str", ".zdebug_line_str" }, |
251d32d9 | 303 | { ".debug_ranges", ".zdebug_ranges" }, |
43988095 | 304 | { ".debug_rnglists", ".zdebug_rnglists" }, |
251d32d9 | 305 | { ".debug_types", ".zdebug_types" }, |
3019eac3 | 306 | { ".debug_addr", ".zdebug_addr" }, |
251d32d9 TG |
307 | { ".debug_frame", ".zdebug_frame" }, |
308 | { ".eh_frame", NULL }, | |
24d3216f | 309 | { ".gdb_index", ".zgdb_index" }, |
927aa2e7 JK |
310 | { ".debug_names", ".zdebug_names" }, |
311 | { ".debug_aranges", ".zdebug_aranges" }, | |
24d3216f | 312 | 23 |
251d32d9 | 313 | }; |
c906108c | 314 | |
80626a55 | 315 | /* List of DWO/DWP sections. */ |
3019eac3 | 316 | |
80626a55 | 317 | static const struct dwop_section_names |
3019eac3 DE |
318 | { |
319 | struct dwarf2_section_names abbrev_dwo; | |
320 | struct dwarf2_section_names info_dwo; | |
321 | struct dwarf2_section_names line_dwo; | |
322 | struct dwarf2_section_names loc_dwo; | |
43988095 | 323 | struct dwarf2_section_names loclists_dwo; |
09262596 DE |
324 | struct dwarf2_section_names macinfo_dwo; |
325 | struct dwarf2_section_names macro_dwo; | |
3019eac3 DE |
326 | struct dwarf2_section_names str_dwo; |
327 | struct dwarf2_section_names str_offsets_dwo; | |
328 | struct dwarf2_section_names types_dwo; | |
80626a55 DE |
329 | struct dwarf2_section_names cu_index; |
330 | struct dwarf2_section_names tu_index; | |
3019eac3 | 331 | } |
80626a55 | 332 | dwop_section_names = |
3019eac3 DE |
333 | { |
334 | { ".debug_abbrev.dwo", ".zdebug_abbrev.dwo" }, | |
335 | { ".debug_info.dwo", ".zdebug_info.dwo" }, | |
336 | { ".debug_line.dwo", ".zdebug_line.dwo" }, | |
337 | { ".debug_loc.dwo", ".zdebug_loc.dwo" }, | |
43988095 | 338 | { ".debug_loclists.dwo", ".zdebug_loclists.dwo" }, |
09262596 DE |
339 | { ".debug_macinfo.dwo", ".zdebug_macinfo.dwo" }, |
340 | { ".debug_macro.dwo", ".zdebug_macro.dwo" }, | |
3019eac3 DE |
341 | { ".debug_str.dwo", ".zdebug_str.dwo" }, |
342 | { ".debug_str_offsets.dwo", ".zdebug_str_offsets.dwo" }, | |
343 | { ".debug_types.dwo", ".zdebug_types.dwo" }, | |
80626a55 DE |
344 | { ".debug_cu_index", ".zdebug_cu_index" }, |
345 | { ".debug_tu_index", ".zdebug_tu_index" }, | |
3019eac3 DE |
346 | }; |
347 | ||
c906108c SS |
348 | /* local data types */ |
349 | ||
107d2387 AC |
350 | /* The data in a compilation unit header, after target2host |
351 | translation, looks like this. */ | |
c906108c | 352 | struct comp_unit_head |
a738430d | 353 | { |
c764a876 | 354 | unsigned int length; |
a738430d | 355 | short version; |
a738430d MK |
356 | unsigned char addr_size; |
357 | unsigned char signed_addr_p; | |
9c541725 | 358 | sect_offset abbrev_sect_off; |
57349743 | 359 | |
a738430d MK |
360 | /* Size of file offsets; either 4 or 8. */ |
361 | unsigned int offset_size; | |
57349743 | 362 | |
a738430d MK |
363 | /* Size of the length field; either 4 or 12. */ |
364 | unsigned int initial_length_size; | |
57349743 | 365 | |
43988095 JK |
366 | enum dwarf_unit_type unit_type; |
367 | ||
a738430d MK |
368 | /* Offset to the first byte of this compilation unit header in the |
369 | .debug_info section, for resolving relative reference dies. */ | |
9c541725 | 370 | sect_offset sect_off; |
57349743 | 371 | |
d00adf39 DE |
372 | /* Offset to first die in this cu from the start of the cu. |
373 | This will be the first byte following the compilation unit header. */ | |
9c541725 | 374 | cu_offset first_die_cu_offset; |
43988095 JK |
375 | |
376 | /* 64-bit signature of this type unit - it is valid only for | |
377 | UNIT_TYPE DW_UT_type. */ | |
378 | ULONGEST signature; | |
379 | ||
380 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
9c541725 | 381 | cu_offset type_cu_offset_in_tu; |
a738430d | 382 | }; |
c906108c | 383 | |
3da10d80 KS |
384 | /* Type used for delaying computation of method physnames. |
385 | See comments for compute_delayed_physnames. */ | |
386 | struct delayed_method_info | |
387 | { | |
388 | /* The type to which the method is attached, i.e., its parent class. */ | |
389 | struct type *type; | |
390 | ||
391 | /* The index of the method in the type's function fieldlists. */ | |
392 | int fnfield_index; | |
393 | ||
394 | /* The index of the method in the fieldlist. */ | |
395 | int index; | |
396 | ||
397 | /* The name of the DIE. */ | |
398 | const char *name; | |
399 | ||
400 | /* The DIE associated with this method. */ | |
401 | struct die_info *die; | |
402 | }; | |
403 | ||
e7c27a73 DJ |
404 | /* Internal state when decoding a particular compilation unit. */ |
405 | struct dwarf2_cu | |
406 | { | |
fcd3b13d SM |
407 | explicit dwarf2_cu (struct dwarf2_per_cu_data *per_cu); |
408 | ~dwarf2_cu (); | |
409 | ||
410 | DISABLE_COPY_AND_ASSIGN (dwarf2_cu); | |
411 | ||
c24bdb02 KS |
412 | /* TU version of handle_DW_AT_stmt_list for read_type_unit_scope. |
413 | Create the set of symtabs used by this TU, or if this TU is sharing | |
414 | symtabs with another TU and the symtabs have already been created | |
415 | then restore those symtabs in the line header. | |
416 | We don't need the pc/line-number mapping for type units. */ | |
417 | void setup_type_unit_groups (struct die_info *die); | |
418 | ||
419 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the | |
420 | buildsym_compunit constructor. */ | |
421 | struct compunit_symtab *start_symtab (const char *name, | |
422 | const char *comp_dir, | |
423 | CORE_ADDR low_pc); | |
424 | ||
425 | /* Reset the builder. */ | |
426 | void reset_builder () { m_builder.reset (); } | |
427 | ||
d00adf39 | 428 | /* The header of the compilation unit. */ |
fcd3b13d | 429 | struct comp_unit_head header {}; |
e142c38c | 430 | |
d00adf39 | 431 | /* Base address of this compilation unit. */ |
fcd3b13d | 432 | CORE_ADDR base_address = 0; |
d00adf39 DE |
433 | |
434 | /* Non-zero if base_address has been set. */ | |
fcd3b13d | 435 | int base_known = 0; |
d00adf39 | 436 | |
e142c38c | 437 | /* The language we are debugging. */ |
fcd3b13d SM |
438 | enum language language = language_unknown; |
439 | const struct language_defn *language_defn = nullptr; | |
e142c38c | 440 | |
fcd3b13d | 441 | const char *producer = nullptr; |
b0f35d58 | 442 | |
c24bdb02 | 443 | private: |
804d2729 TT |
444 | /* The symtab builder for this CU. This is only non-NULL when full |
445 | symbols are being read. */ | |
c24bdb02 | 446 | std::unique_ptr<buildsym_compunit> m_builder; |
804d2729 | 447 | |
c24bdb02 | 448 | public: |
e142c38c DJ |
449 | /* The generic symbol table building routines have separate lists for |
450 | file scope symbols and all all other scopes (local scopes). So | |
451 | we need to select the right one to pass to add_symbol_to_list(). | |
452 | We do it by keeping a pointer to the correct list in list_in_scope. | |
453 | ||
454 | FIXME: The original dwarf code just treated the file scope as the | |
455 | first local scope, and all other local scopes as nested local | |
456 | scopes, and worked fine. Check to see if we really need to | |
457 | distinguish these in buildsym.c. */ | |
fcd3b13d | 458 | struct pending **list_in_scope = nullptr; |
e142c38c | 459 | |
b64f50a1 JK |
460 | /* Hash table holding all the loaded partial DIEs |
461 | with partial_die->offset.SECT_OFF as hash. */ | |
fcd3b13d | 462 | htab_t partial_dies = nullptr; |
72bf9492 DJ |
463 | |
464 | /* Storage for things with the same lifetime as this read-in compilation | |
465 | unit, including partial DIEs. */ | |
fcd3b13d | 466 | auto_obstack comp_unit_obstack; |
72bf9492 | 467 | |
ae038cb0 DJ |
468 | /* When multiple dwarf2_cu structures are living in memory, this field |
469 | chains them all together, so that they can be released efficiently. | |
470 | We will probably also want a generation counter so that most-recently-used | |
471 | compilation units are cached... */ | |
fcd3b13d | 472 | struct dwarf2_per_cu_data *read_in_chain = nullptr; |
ae038cb0 | 473 | |
69d751e3 | 474 | /* Backlink to our per_cu entry. */ |
ae038cb0 DJ |
475 | struct dwarf2_per_cu_data *per_cu; |
476 | ||
477 | /* How many compilation units ago was this CU last referenced? */ | |
fcd3b13d | 478 | int last_used = 0; |
ae038cb0 | 479 | |
b64f50a1 JK |
480 | /* A hash table of DIE cu_offset for following references with |
481 | die_info->offset.sect_off as hash. */ | |
fcd3b13d | 482 | htab_t die_hash = nullptr; |
10b3939b DJ |
483 | |
484 | /* Full DIEs if read in. */ | |
fcd3b13d | 485 | struct die_info *dies = nullptr; |
10b3939b DJ |
486 | |
487 | /* A set of pointers to dwarf2_per_cu_data objects for compilation | |
488 | units referenced by this one. Only set during full symbol processing; | |
489 | partial symbol tables do not have dependencies. */ | |
fcd3b13d | 490 | htab_t dependencies = nullptr; |
10b3939b | 491 | |
cb1df416 | 492 | /* Header data from the line table, during full symbol processing. */ |
fcd3b13d | 493 | struct line_header *line_header = nullptr; |
4c8aa72d PA |
494 | /* Non-NULL if LINE_HEADER is owned by this DWARF_CU. Otherwise, |
495 | it's owned by dwarf2_per_objfile::line_header_hash. If non-NULL, | |
496 | this is the DW_TAG_compile_unit die for this CU. We'll hold on | |
497 | to the line header as long as this DIE is being processed. See | |
498 | process_die_scope. */ | |
fcd3b13d | 499 | die_info *line_header_die_owner = nullptr; |
cb1df416 | 500 | |
3da10d80 KS |
501 | /* A list of methods which need to have physnames computed |
502 | after all type information has been read. */ | |
c89b44cd | 503 | std::vector<delayed_method_info> method_list; |
3da10d80 | 504 | |
96408a79 | 505 | /* To be copied to symtab->call_site_htab. */ |
fcd3b13d | 506 | htab_t call_site_htab = nullptr; |
96408a79 | 507 | |
034e5797 DE |
508 | /* Non-NULL if this CU came from a DWO file. |
509 | There is an invariant here that is important to remember: | |
510 | Except for attributes copied from the top level DIE in the "main" | |
511 | (or "stub") file in preparation for reading the DWO file | |
512 | (e.g., DW_AT_GNU_addr_base), we KISS: there is only *one* CU. | |
513 | Either there isn't a DWO file (in which case this is NULL and the point | |
514 | is moot), or there is and either we're not going to read it (in which | |
515 | case this is NULL) or there is and we are reading it (in which case this | |
516 | is non-NULL). */ | |
fcd3b13d | 517 | struct dwo_unit *dwo_unit = nullptr; |
3019eac3 DE |
518 | |
519 | /* The DW_AT_addr_base attribute if present, zero otherwise | |
520 | (zero is a valid value though). | |
1dbab08b | 521 | Note this value comes from the Fission stub CU/TU's DIE. */ |
fcd3b13d | 522 | ULONGEST addr_base = 0; |
3019eac3 | 523 | |
2e3cf129 DE |
524 | /* The DW_AT_ranges_base attribute if present, zero otherwise |
525 | (zero is a valid value though). | |
1dbab08b | 526 | Note this value comes from the Fission stub CU/TU's DIE. |
2e3cf129 | 527 | Also note that the value is zero in the non-DWO case so this value can |
ab435259 DE |
528 | be used without needing to know whether DWO files are in use or not. |
529 | N.B. This does not apply to DW_AT_ranges appearing in | |
530 | DW_TAG_compile_unit dies. This is a bit of a wart, consider if ever | |
531 | DW_AT_ranges appeared in the DW_TAG_compile_unit of DWO DIEs: then | |
532 | DW_AT_ranges_base *would* have to be applied, and we'd have to care | |
533 | whether the DW_AT_ranges attribute came from the skeleton or DWO. */ | |
fcd3b13d | 534 | ULONGEST ranges_base = 0; |
2e3cf129 | 535 | |
c9317f21 TT |
536 | /* When reading debug info generated by older versions of rustc, we |
537 | have to rewrite some union types to be struct types with a | |
538 | variant part. This rewriting must be done after the CU is fully | |
539 | read in, because otherwise at the point of rewriting some struct | |
540 | type might not have been fully processed. So, we keep a list of | |
541 | all such types here and process them after expansion. */ | |
542 | std::vector<struct type *> rust_unions; | |
543 | ||
ae038cb0 | 544 | /* Mark used when releasing cached dies. */ |
9068261f | 545 | bool mark : 1; |
ae038cb0 | 546 | |
8be455d7 JK |
547 | /* This CU references .debug_loc. See the symtab->locations_valid field. |
548 | This test is imperfect as there may exist optimized debug code not using | |
549 | any location list and still facing inlining issues if handled as | |
550 | unoptimized code. For a future better test see GCC PR other/32998. */ | |
9068261f | 551 | bool has_loclist : 1; |
ba919b58 | 552 | |
9068261f | 553 | /* These cache the results for producer_is_* fields. CHECKED_PRODUCER is true |
1b80a9fa JK |
554 | if all the producer_is_* fields are valid. This information is cached |
555 | because profiling CU expansion showed excessive time spent in | |
556 | producer_is_gxx_lt_4_6. */ | |
9068261f AB |
557 | bool checked_producer : 1; |
558 | bool producer_is_gxx_lt_4_6 : 1; | |
559 | bool producer_is_gcc_lt_4_3 : 1; | |
eb77c9df | 560 | bool producer_is_icc : 1; |
9068261f | 561 | bool producer_is_icc_lt_14 : 1; |
c258c396 | 562 | bool producer_is_codewarrior : 1; |
4d4ec4e5 | 563 | |
9068261f | 564 | /* When true, the file that we're processing is known to have |
4d4ec4e5 TT |
565 | debugging info for C++ namespaces. GCC 3.3.x did not produce |
566 | this information, but later versions do. */ | |
567 | ||
9068261f | 568 | bool processing_has_namespace_info : 1; |
d590ff25 YQ |
569 | |
570 | struct partial_die_info *find_partial_die (sect_offset sect_off); | |
c24bdb02 KS |
571 | |
572 | /* If this CU was inherited by another CU (via specification, | |
573 | abstract_origin, etc), this is the ancestor CU. */ | |
574 | dwarf2_cu *ancestor; | |
575 | ||
576 | /* Get the buildsym_compunit for this CU. */ | |
577 | buildsym_compunit *get_builder () | |
578 | { | |
579 | /* If this CU has a builder associated with it, use that. */ | |
580 | if (m_builder != nullptr) | |
581 | return m_builder.get (); | |
582 | ||
583 | /* Otherwise, search ancestors for a valid builder. */ | |
584 | if (ancestor != nullptr) | |
585 | return ancestor->get_builder (); | |
586 | ||
587 | return nullptr; | |
588 | } | |
e7c27a73 DJ |
589 | }; |
590 | ||
094b34ac DE |
591 | /* A struct that can be used as a hash key for tables based on DW_AT_stmt_list. |
592 | This includes type_unit_group and quick_file_names. */ | |
593 | ||
594 | struct stmt_list_hash | |
595 | { | |
596 | /* The DWO unit this table is from or NULL if there is none. */ | |
597 | struct dwo_unit *dwo_unit; | |
598 | ||
599 | /* Offset in .debug_line or .debug_line.dwo. */ | |
9c541725 | 600 | sect_offset line_sect_off; |
094b34ac DE |
601 | }; |
602 | ||
f4dc4d17 DE |
603 | /* Each element of dwarf2_per_objfile->type_unit_groups is a pointer to |
604 | an object of this type. */ | |
605 | ||
606 | struct type_unit_group | |
607 | { | |
0186c6a7 | 608 | /* dwarf2read.c's main "handle" on a TU symtab. |
f4dc4d17 DE |
609 | To simplify things we create an artificial CU that "includes" all the |
610 | type units using this stmt_list so that the rest of the code still has | |
611 | a "per_cu" handle on the symtab. | |
612 | This PER_CU is recognized by having no section. */ | |
8a0459fd | 613 | #define IS_TYPE_UNIT_GROUP(per_cu) ((per_cu)->section == NULL) |
094b34ac DE |
614 | struct dwarf2_per_cu_data per_cu; |
615 | ||
0186c6a7 DE |
616 | /* The TUs that share this DW_AT_stmt_list entry. |
617 | This is added to while parsing type units to build partial symtabs, | |
618 | and is deleted afterwards and not used again. */ | |
619 | VEC (sig_type_ptr) *tus; | |
f4dc4d17 | 620 | |
43f3e411 | 621 | /* The compunit symtab. |
094b34ac | 622 | Type units in a group needn't all be defined in the same source file, |
43f3e411 DE |
623 | so we create an essentially anonymous symtab as the compunit symtab. */ |
624 | struct compunit_symtab *compunit_symtab; | |
f4dc4d17 | 625 | |
094b34ac DE |
626 | /* The data used to construct the hash key. */ |
627 | struct stmt_list_hash hash; | |
f4dc4d17 DE |
628 | |
629 | /* The number of symtabs from the line header. | |
630 | The value here must match line_header.num_file_names. */ | |
631 | unsigned int num_symtabs; | |
632 | ||
633 | /* The symbol tables for this TU (obtained from the files listed in | |
634 | DW_AT_stmt_list). | |
635 | WARNING: The order of entries here must match the order of entries | |
636 | in the line header. After the first TU using this type_unit_group, the | |
637 | line header for the subsequent TUs is recreated from this. This is done | |
638 | because we need to use the same symtabs for each TU using the same | |
639 | DW_AT_stmt_list value. Also note that symtabs may be repeated here, | |
640 | there's no guarantee the line header doesn't have duplicate entries. */ | |
641 | struct symtab **symtabs; | |
642 | }; | |
643 | ||
73869dc2 | 644 | /* These sections are what may appear in a (real or virtual) DWO file. */ |
3019eac3 DE |
645 | |
646 | struct dwo_sections | |
647 | { | |
648 | struct dwarf2_section_info abbrev; | |
3019eac3 DE |
649 | struct dwarf2_section_info line; |
650 | struct dwarf2_section_info loc; | |
43988095 | 651 | struct dwarf2_section_info loclists; |
09262596 DE |
652 | struct dwarf2_section_info macinfo; |
653 | struct dwarf2_section_info macro; | |
3019eac3 DE |
654 | struct dwarf2_section_info str; |
655 | struct dwarf2_section_info str_offsets; | |
80626a55 DE |
656 | /* In the case of a virtual DWO file, these two are unused. */ |
657 | struct dwarf2_section_info info; | |
3019eac3 DE |
658 | VEC (dwarf2_section_info_def) *types; |
659 | }; | |
660 | ||
c88ee1f0 | 661 | /* CUs/TUs in DWP/DWO files. */ |
3019eac3 DE |
662 | |
663 | struct dwo_unit | |
664 | { | |
665 | /* Backlink to the containing struct dwo_file. */ | |
666 | struct dwo_file *dwo_file; | |
667 | ||
668 | /* The "id" that distinguishes this CU/TU. | |
669 | .debug_info calls this "dwo_id", .debug_types calls this "signature". | |
670 | Since signatures came first, we stick with it for consistency. */ | |
671 | ULONGEST signature; | |
672 | ||
673 | /* The section this CU/TU lives in, in the DWO file. */ | |
8a0459fd | 674 | struct dwarf2_section_info *section; |
3019eac3 | 675 | |
9c541725 PA |
676 | /* Same as dwarf2_per_cu_data:{sect_off,length} but in the DWO section. */ |
677 | sect_offset sect_off; | |
3019eac3 DE |
678 | unsigned int length; |
679 | ||
680 | /* For types, offset in the type's DIE of the type defined by this TU. */ | |
681 | cu_offset type_offset_in_tu; | |
682 | }; | |
683 | ||
73869dc2 DE |
684 | /* include/dwarf2.h defines the DWP section codes. |
685 | It defines a max value but it doesn't define a min value, which we | |
686 | use for error checking, so provide one. */ | |
687 | ||
688 | enum dwp_v2_section_ids | |
689 | { | |
690 | DW_SECT_MIN = 1 | |
691 | }; | |
692 | ||
80626a55 | 693 | /* Data for one DWO file. |
57d63ce2 DE |
694 | |
695 | This includes virtual DWO files (a virtual DWO file is a DWO file as it | |
696 | appears in a DWP file). DWP files don't really have DWO files per se - | |
697 | comdat folding of types "loses" the DWO file they came from, and from | |
698 | a high level view DWP files appear to contain a mass of random types. | |
699 | However, to maintain consistency with the non-DWP case we pretend DWP | |
700 | files contain virtual DWO files, and we assign each TU with one virtual | |
701 | DWO file (generally based on the line and abbrev section offsets - | |
702 | a heuristic that seems to work in practice). */ | |
3019eac3 DE |
703 | |
704 | struct dwo_file | |
705 | { | |
0ac5b59e | 706 | /* The DW_AT_GNU_dwo_name attribute. |
80626a55 DE |
707 | For virtual DWO files the name is constructed from the section offsets |
708 | of abbrev,line,loc,str_offsets so that we combine virtual DWO files | |
709 | from related CU+TUs. */ | |
0ac5b59e DE |
710 | const char *dwo_name; |
711 | ||
712 | /* The DW_AT_comp_dir attribute. */ | |
713 | const char *comp_dir; | |
3019eac3 | 714 | |
80626a55 DE |
715 | /* The bfd, when the file is open. Otherwise this is NULL. |
716 | This is unused(NULL) for virtual DWO files where we use dwp_file.dbfd. */ | |
717 | bfd *dbfd; | |
3019eac3 | 718 | |
73869dc2 DE |
719 | /* The sections that make up this DWO file. |
720 | Remember that for virtual DWO files in DWP V2, these are virtual | |
721 | sections (for lack of a better name). */ | |
3019eac3 DE |
722 | struct dwo_sections sections; |
723 | ||
33c5cd75 DB |
724 | /* The CUs in the file. |
725 | Each element is a struct dwo_unit. Multiple CUs per DWO are supported as | |
726 | an extension to handle LLVM's Link Time Optimization output (where | |
727 | multiple source files may be compiled into a single object/dwo pair). */ | |
728 | htab_t cus; | |
3019eac3 DE |
729 | |
730 | /* Table of TUs in the file. | |
731 | Each element is a struct dwo_unit. */ | |
732 | htab_t tus; | |
733 | }; | |
734 | ||
80626a55 DE |
735 | /* These sections are what may appear in a DWP file. */ |
736 | ||
737 | struct dwp_sections | |
738 | { | |
73869dc2 | 739 | /* These are used by both DWP version 1 and 2. */ |
80626a55 DE |
740 | struct dwarf2_section_info str; |
741 | struct dwarf2_section_info cu_index; | |
742 | struct dwarf2_section_info tu_index; | |
73869dc2 DE |
743 | |
744 | /* These are only used by DWP version 2 files. | |
745 | In DWP version 1 the .debug_info.dwo, .debug_types.dwo, and other | |
746 | sections are referenced by section number, and are not recorded here. | |
747 | In DWP version 2 there is at most one copy of all these sections, each | |
748 | section being (effectively) comprised of the concatenation of all of the | |
749 | individual sections that exist in the version 1 format. | |
750 | To keep the code simple we treat each of these concatenated pieces as a | |
751 | section itself (a virtual section?). */ | |
752 | struct dwarf2_section_info abbrev; | |
753 | struct dwarf2_section_info info; | |
754 | struct dwarf2_section_info line; | |
755 | struct dwarf2_section_info loc; | |
756 | struct dwarf2_section_info macinfo; | |
757 | struct dwarf2_section_info macro; | |
758 | struct dwarf2_section_info str_offsets; | |
759 | struct dwarf2_section_info types; | |
80626a55 DE |
760 | }; |
761 | ||
73869dc2 DE |
762 | /* These sections are what may appear in a virtual DWO file in DWP version 1. |
763 | A virtual DWO file is a DWO file as it appears in a DWP file. */ | |
80626a55 | 764 | |
73869dc2 | 765 | struct virtual_v1_dwo_sections |
80626a55 DE |
766 | { |
767 | struct dwarf2_section_info abbrev; | |
768 | struct dwarf2_section_info line; | |
769 | struct dwarf2_section_info loc; | |
770 | struct dwarf2_section_info macinfo; | |
771 | struct dwarf2_section_info macro; | |
772 | struct dwarf2_section_info str_offsets; | |
773 | /* Each DWP hash table entry records one CU or one TU. | |
8a0459fd | 774 | That is recorded here, and copied to dwo_unit.section. */ |
80626a55 DE |
775 | struct dwarf2_section_info info_or_types; |
776 | }; | |
777 | ||
73869dc2 DE |
778 | /* Similar to virtual_v1_dwo_sections, but for DWP version 2. |
779 | In version 2, the sections of the DWO files are concatenated together | |
780 | and stored in one section of that name. Thus each ELF section contains | |
781 | several "virtual" sections. */ | |
782 | ||
783 | struct virtual_v2_dwo_sections | |
784 | { | |
785 | bfd_size_type abbrev_offset; | |
786 | bfd_size_type abbrev_size; | |
787 | ||
788 | bfd_size_type line_offset; | |
789 | bfd_size_type line_size; | |
790 | ||
791 | bfd_size_type loc_offset; | |
792 | bfd_size_type loc_size; | |
793 | ||
794 | bfd_size_type macinfo_offset; | |
795 | bfd_size_type macinfo_size; | |
796 | ||
797 | bfd_size_type macro_offset; | |
798 | bfd_size_type macro_size; | |
799 | ||
800 | bfd_size_type str_offsets_offset; | |
801 | bfd_size_type str_offsets_size; | |
802 | ||
803 | /* Each DWP hash table entry records one CU or one TU. | |
804 | That is recorded here, and copied to dwo_unit.section. */ | |
805 | bfd_size_type info_or_types_offset; | |
806 | bfd_size_type info_or_types_size; | |
807 | }; | |
808 | ||
80626a55 DE |
809 | /* Contents of DWP hash tables. */ |
810 | ||
811 | struct dwp_hash_table | |
812 | { | |
73869dc2 | 813 | uint32_t version, nr_columns; |
80626a55 | 814 | uint32_t nr_units, nr_slots; |
73869dc2 DE |
815 | const gdb_byte *hash_table, *unit_table; |
816 | union | |
817 | { | |
818 | struct | |
819 | { | |
820 | const gdb_byte *indices; | |
821 | } v1; | |
822 | struct | |
823 | { | |
824 | /* This is indexed by column number and gives the id of the section | |
825 | in that column. */ | |
826 | #define MAX_NR_V2_DWO_SECTIONS \ | |
827 | (1 /* .debug_info or .debug_types */ \ | |
828 | + 1 /* .debug_abbrev */ \ | |
829 | + 1 /* .debug_line */ \ | |
830 | + 1 /* .debug_loc */ \ | |
831 | + 1 /* .debug_str_offsets */ \ | |
832 | + 1 /* .debug_macro or .debug_macinfo */) | |
833 | int section_ids[MAX_NR_V2_DWO_SECTIONS]; | |
834 | const gdb_byte *offsets; | |
835 | const gdb_byte *sizes; | |
836 | } v2; | |
837 | } section_pool; | |
80626a55 DE |
838 | }; |
839 | ||
840 | /* Data for one DWP file. */ | |
841 | ||
842 | struct dwp_file | |
843 | { | |
400174b1 TT |
844 | dwp_file (const char *name_, gdb_bfd_ref_ptr &&abfd) |
845 | : name (name_), | |
846 | dbfd (std::move (abfd)) | |
847 | { | |
848 | } | |
849 | ||
80626a55 DE |
850 | /* Name of the file. */ |
851 | const char *name; | |
852 | ||
73869dc2 | 853 | /* File format version. */ |
400174b1 | 854 | int version = 0; |
73869dc2 | 855 | |
93417882 | 856 | /* The bfd. */ |
400174b1 | 857 | gdb_bfd_ref_ptr dbfd; |
80626a55 DE |
858 | |
859 | /* Section info for this file. */ | |
400174b1 | 860 | struct dwp_sections sections {}; |
80626a55 | 861 | |
57d63ce2 | 862 | /* Table of CUs in the file. */ |
400174b1 | 863 | const struct dwp_hash_table *cus = nullptr; |
80626a55 DE |
864 | |
865 | /* Table of TUs in the file. */ | |
400174b1 | 866 | const struct dwp_hash_table *tus = nullptr; |
80626a55 | 867 | |
19ac8c2e | 868 | /* Tables of loaded CUs/TUs. Each entry is a struct dwo_unit *. */ |
400174b1 TT |
869 | htab_t loaded_cus {}; |
870 | htab_t loaded_tus {}; | |
80626a55 | 871 | |
73869dc2 DE |
872 | /* Table to map ELF section numbers to their sections. |
873 | This is only needed for the DWP V1 file format. */ | |
400174b1 TT |
874 | unsigned int num_sections = 0; |
875 | asection **elf_sections = nullptr; | |
80626a55 DE |
876 | }; |
877 | ||
36586728 TT |
878 | /* This represents a '.dwz' file. */ |
879 | ||
880 | struct dwz_file | |
881 | { | |
7ff8cb8c TT |
882 | dwz_file (gdb_bfd_ref_ptr &&bfd) |
883 | : dwz_bfd (std::move (bfd)) | |
884 | { | |
885 | } | |
886 | ||
36586728 | 887 | /* A dwz file can only contain a few sections. */ |
7ff8cb8c TT |
888 | struct dwarf2_section_info abbrev {}; |
889 | struct dwarf2_section_info info {}; | |
890 | struct dwarf2_section_info str {}; | |
891 | struct dwarf2_section_info line {}; | |
892 | struct dwarf2_section_info macro {}; | |
893 | struct dwarf2_section_info gdb_index {}; | |
894 | struct dwarf2_section_info debug_names {}; | |
36586728 TT |
895 | |
896 | /* The dwz's BFD. */ | |
7ff8cb8c | 897 | gdb_bfd_ref_ptr dwz_bfd; |
87d6a7aa SM |
898 | |
899 | /* If we loaded the index from an external file, this contains the | |
900 | resources associated to the open file, memory mapping, etc. */ | |
901 | std::unique_ptr<index_cache_resource> index_cache_res; | |
36586728 TT |
902 | }; |
903 | ||
0963b4bd MS |
904 | /* Struct used to pass misc. parameters to read_die_and_children, et |
905 | al. which are used for both .debug_info and .debug_types dies. | |
906 | All parameters here are unchanging for the life of the call. This | |
dee91e82 | 907 | struct exists to abstract away the constant parameters of die reading. */ |
93311388 DE |
908 | |
909 | struct die_reader_specs | |
910 | { | |
a32a8923 | 911 | /* The bfd of die_section. */ |
93311388 DE |
912 | bfd* abfd; |
913 | ||
914 | /* The CU of the DIE we are parsing. */ | |
915 | struct dwarf2_cu *cu; | |
916 | ||
80626a55 | 917 | /* Non-NULL if reading a DWO file (including one packaged into a DWP). */ |
3019eac3 DE |
918 | struct dwo_file *dwo_file; |
919 | ||
dee91e82 | 920 | /* The section the die comes from. |
3019eac3 | 921 | This is either .debug_info or .debug_types, or the .dwo variants. */ |
dee91e82 DE |
922 | struct dwarf2_section_info *die_section; |
923 | ||
924 | /* die_section->buffer. */ | |
d521ce57 | 925 | const gdb_byte *buffer; |
f664829e DE |
926 | |
927 | /* The end of the buffer. */ | |
928 | const gdb_byte *buffer_end; | |
a2ce51a0 DE |
929 | |
930 | /* The value of the DW_AT_comp_dir attribute. */ | |
931 | const char *comp_dir; | |
685af9cd TT |
932 | |
933 | /* The abbreviation table to use when reading the DIEs. */ | |
934 | struct abbrev_table *abbrev_table; | |
93311388 DE |
935 | }; |
936 | ||
fd820528 | 937 | /* Type of function passed to init_cutu_and_read_dies, et.al. */ |
dee91e82 | 938 | typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader, |
d521ce57 | 939 | const gdb_byte *info_ptr, |
dee91e82 DE |
940 | struct die_info *comp_unit_die, |
941 | int has_children, | |
942 | void *data); | |
943 | ||
ecfb656c PA |
944 | /* A 1-based directory index. This is a strong typedef to prevent |
945 | accidentally using a directory index as a 0-based index into an | |
946 | array/vector. */ | |
947 | enum class dir_index : unsigned int {}; | |
948 | ||
949 | /* Likewise, a 1-based file name index. */ | |
950 | enum class file_name_index : unsigned int {}; | |
951 | ||
52059ffd TT |
952 | struct file_entry |
953 | { | |
fff8551c PA |
954 | file_entry () = default; |
955 | ||
ecfb656c | 956 | file_entry (const char *name_, dir_index d_index_, |
fff8551c PA |
957 | unsigned int mod_time_, unsigned int length_) |
958 | : name (name_), | |
ecfb656c | 959 | d_index (d_index_), |
fff8551c PA |
960 | mod_time (mod_time_), |
961 | length (length_) | |
962 | {} | |
963 | ||
ecfb656c PA |
964 | /* Return the include directory at D_INDEX stored in LH. Returns |
965 | NULL if D_INDEX is out of bounds. */ | |
8c43009f PA |
966 | const char *include_dir (const line_header *lh) const; |
967 | ||
fff8551c PA |
968 | /* The file name. Note this is an observing pointer. The memory is |
969 | owned by debug_line_buffer. */ | |
970 | const char *name {}; | |
971 | ||
8c43009f | 972 | /* The directory index (1-based). */ |
ecfb656c | 973 | dir_index d_index {}; |
fff8551c PA |
974 | |
975 | unsigned int mod_time {}; | |
976 | ||
977 | unsigned int length {}; | |
978 | ||
979 | /* True if referenced by the Line Number Program. */ | |
980 | bool included_p {}; | |
981 | ||
83769d0b | 982 | /* The associated symbol table, if any. */ |
fff8551c | 983 | struct symtab *symtab {}; |
52059ffd TT |
984 | }; |
985 | ||
debd256d JB |
986 | /* The line number information for a compilation unit (found in the |
987 | .debug_line section) begins with a "statement program header", | |
988 | which contains the following information. */ | |
989 | struct line_header | |
990 | { | |
fff8551c PA |
991 | line_header () |
992 | : offset_in_dwz {} | |
993 | {} | |
994 | ||
995 | /* Add an entry to the include directory table. */ | |
996 | void add_include_dir (const char *include_dir); | |
997 | ||
998 | /* Add an entry to the file name table. */ | |
ecfb656c | 999 | void add_file_name (const char *name, dir_index d_index, |
fff8551c PA |
1000 | unsigned int mod_time, unsigned int length); |
1001 | ||
ecfb656c | 1002 | /* Return the include dir at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1003 | is out of bounds. */ |
ecfb656c | 1004 | const char *include_dir_at (dir_index index) const |
8c43009f | 1005 | { |
ecfb656c PA |
1006 | /* Convert directory index number (1-based) to vector index |
1007 | (0-based). */ | |
1008 | size_t vec_index = to_underlying (index) - 1; | |
1009 | ||
1010 | if (vec_index >= include_dirs.size ()) | |
8c43009f | 1011 | return NULL; |
ecfb656c | 1012 | return include_dirs[vec_index]; |
8c43009f PA |
1013 | } |
1014 | ||
ecfb656c | 1015 | /* Return the file name at INDEX (1-based). Returns NULL if INDEX |
8c43009f | 1016 | is out of bounds. */ |
ecfb656c | 1017 | file_entry *file_name_at (file_name_index index) |
8c43009f | 1018 | { |
ecfb656c PA |
1019 | /* Convert file name index number (1-based) to vector index |
1020 | (0-based). */ | |
1021 | size_t vec_index = to_underlying (index) - 1; | |
1022 | ||
1023 | if (vec_index >= file_names.size ()) | |
fff8551c | 1024 | return NULL; |
ecfb656c | 1025 | return &file_names[vec_index]; |
fff8551c PA |
1026 | } |
1027 | ||
527f3840 | 1028 | /* Offset of line number information in .debug_line section. */ |
9c541725 | 1029 | sect_offset sect_off {}; |
527f3840 JK |
1030 | |
1031 | /* OFFSET is for struct dwz_file associated with dwarf2_per_objfile. */ | |
fff8551c PA |
1032 | unsigned offset_in_dwz : 1; /* Can't initialize bitfields in-class. */ |
1033 | ||
1034 | unsigned int total_length {}; | |
1035 | unsigned short version {}; | |
1036 | unsigned int header_length {}; | |
1037 | unsigned char minimum_instruction_length {}; | |
1038 | unsigned char maximum_ops_per_instruction {}; | |
1039 | unsigned char default_is_stmt {}; | |
1040 | int line_base {}; | |
1041 | unsigned char line_range {}; | |
1042 | unsigned char opcode_base {}; | |
debd256d JB |
1043 | |
1044 | /* standard_opcode_lengths[i] is the number of operands for the | |
1045 | standard opcode whose value is i. This means that | |
1046 | standard_opcode_lengths[0] is unused, and the last meaningful | |
1047 | element is standard_opcode_lengths[opcode_base - 1]. */ | |
fff8551c | 1048 | std::unique_ptr<unsigned char[]> standard_opcode_lengths; |
debd256d | 1049 | |
fff8551c PA |
1050 | /* The include_directories table. Note these are observing |
1051 | pointers. The memory is owned by debug_line_buffer. */ | |
1052 | std::vector<const char *> include_dirs; | |
debd256d | 1053 | |
fff8551c PA |
1054 | /* The file_names table. */ |
1055 | std::vector<file_entry> file_names; | |
debd256d JB |
1056 | |
1057 | /* The start and end of the statement program following this | |
6502dd73 | 1058 | header. These point into dwarf2_per_objfile->line_buffer. */ |
fff8551c | 1059 | const gdb_byte *statement_program_start {}, *statement_program_end {}; |
debd256d | 1060 | }; |
c906108c | 1061 | |
fff8551c PA |
1062 | typedef std::unique_ptr<line_header> line_header_up; |
1063 | ||
8c43009f PA |
1064 | const char * |
1065 | file_entry::include_dir (const line_header *lh) const | |
1066 | { | |
ecfb656c | 1067 | return lh->include_dir_at (d_index); |
8c43009f PA |
1068 | } |
1069 | ||
c906108c | 1070 | /* When we construct a partial symbol table entry we only |
0963b4bd | 1071 | need this much information. */ |
6f06d47b | 1072 | struct partial_die_info : public allocate_on_obstack |
c906108c | 1073 | { |
6f06d47b YQ |
1074 | partial_die_info (sect_offset sect_off, struct abbrev_info *abbrev); |
1075 | ||
1076 | /* Disable assign but still keep copy ctor, which is needed | |
1077 | load_partial_dies. */ | |
1078 | partial_die_info& operator=(const partial_die_info& rhs) = delete; | |
1079 | ||
52356b79 YQ |
1080 | /* Adjust the partial die before generating a symbol for it. This |
1081 | function may set the is_external flag or change the DIE's | |
1082 | name. */ | |
1083 | void fixup (struct dwarf2_cu *cu); | |
1084 | ||
48fbe735 YQ |
1085 | /* Read a minimal amount of information into the minimal die |
1086 | structure. */ | |
1087 | const gdb_byte *read (const struct die_reader_specs *reader, | |
1088 | const struct abbrev_info &abbrev, | |
1089 | const gdb_byte *info_ptr); | |
1090 | ||
72bf9492 | 1091 | /* Offset of this DIE. */ |
6f06d47b | 1092 | const sect_offset sect_off; |
72bf9492 DJ |
1093 | |
1094 | /* DWARF-2 tag for this DIE. */ | |
6f06d47b | 1095 | const ENUM_BITFIELD(dwarf_tag) tag : 16; |
72bf9492 | 1096 | |
72bf9492 | 1097 | /* Assorted flags describing the data found in this DIE. */ |
6f06d47b YQ |
1098 | const unsigned int has_children : 1; |
1099 | ||
72bf9492 DJ |
1100 | unsigned int is_external : 1; |
1101 | unsigned int is_declaration : 1; | |
1102 | unsigned int has_type : 1; | |
1103 | unsigned int has_specification : 1; | |
1104 | unsigned int has_pc_info : 1; | |
481860b3 | 1105 | unsigned int may_be_inlined : 1; |
72bf9492 | 1106 | |
0c1b455e TT |
1107 | /* This DIE has been marked DW_AT_main_subprogram. */ |
1108 | unsigned int main_subprogram : 1; | |
1109 | ||
72bf9492 DJ |
1110 | /* Flag set if the SCOPE field of this structure has been |
1111 | computed. */ | |
1112 | unsigned int scope_set : 1; | |
1113 | ||
fa4028e9 JB |
1114 | /* Flag set if the DIE has a byte_size attribute. */ |
1115 | unsigned int has_byte_size : 1; | |
1116 | ||
ff908ebf AW |
1117 | /* Flag set if the DIE has a DW_AT_const_value attribute. */ |
1118 | unsigned int has_const_value : 1; | |
1119 | ||
98bfdba5 PA |
1120 | /* Flag set if any of the DIE's children are template arguments. */ |
1121 | unsigned int has_template_arguments : 1; | |
1122 | ||
52356b79 | 1123 | /* Flag set if fixup has been called on this die. */ |
abc72ce4 DE |
1124 | unsigned int fixup_called : 1; |
1125 | ||
36586728 TT |
1126 | /* Flag set if DW_TAG_imported_unit uses DW_FORM_GNU_ref_alt. */ |
1127 | unsigned int is_dwz : 1; | |
1128 | ||
1129 | /* Flag set if spec_offset uses DW_FORM_GNU_ref_alt. */ | |
1130 | unsigned int spec_is_dwz : 1; | |
1131 | ||
72bf9492 | 1132 | /* The name of this DIE. Normally the value of DW_AT_name, but |
94af9270 | 1133 | sometimes a default name for unnamed DIEs. */ |
6f06d47b | 1134 | const char *name = nullptr; |
72bf9492 | 1135 | |
abc72ce4 | 1136 | /* The linkage name, if present. */ |
6f06d47b | 1137 | const char *linkage_name = nullptr; |
abc72ce4 | 1138 | |
72bf9492 DJ |
1139 | /* The scope to prepend to our children. This is generally |
1140 | allocated on the comp_unit_obstack, so will disappear | |
1141 | when this compilation unit leaves the cache. */ | |
6f06d47b | 1142 | const char *scope = nullptr; |
72bf9492 | 1143 | |
95554aad TT |
1144 | /* Some data associated with the partial DIE. The tag determines |
1145 | which field is live. */ | |
1146 | union | |
1147 | { | |
1148 | /* The location description associated with this DIE, if any. */ | |
1149 | struct dwarf_block *locdesc; | |
1150 | /* The offset of an import, for DW_TAG_imported_unit. */ | |
9c541725 | 1151 | sect_offset sect_off; |
6f06d47b | 1152 | } d {}; |
72bf9492 DJ |
1153 | |
1154 | /* If HAS_PC_INFO, the PC range associated with this DIE. */ | |
6f06d47b YQ |
1155 | CORE_ADDR lowpc = 0; |
1156 | CORE_ADDR highpc = 0; | |
72bf9492 | 1157 | |
93311388 | 1158 | /* Pointer into the info_buffer (or types_buffer) pointing at the target of |
72bf9492 | 1159 | DW_AT_sibling, if any. */ |
48fbe735 YQ |
1160 | /* NOTE: This member isn't strictly necessary, partial_die_info::read |
1161 | could return DW_AT_sibling values to its caller load_partial_dies. */ | |
6f06d47b | 1162 | const gdb_byte *sibling = nullptr; |
72bf9492 DJ |
1163 | |
1164 | /* If HAS_SPECIFICATION, the offset of the DIE referred to by | |
1165 | DW_AT_specification (or DW_AT_abstract_origin or | |
1166 | DW_AT_extension). */ | |
6f06d47b | 1167 | sect_offset spec_offset {}; |
72bf9492 DJ |
1168 | |
1169 | /* Pointers to this DIE's parent, first child, and next sibling, | |
1170 | if any. */ | |
6f06d47b YQ |
1171 | struct partial_die_info *die_parent = nullptr; |
1172 | struct partial_die_info *die_child = nullptr; | |
1173 | struct partial_die_info *die_sibling = nullptr; | |
1174 | ||
1175 | friend struct partial_die_info * | |
1176 | dwarf2_cu::find_partial_die (sect_offset sect_off); | |
1177 | ||
1178 | private: | |
1179 | /* Only need to do look up in dwarf2_cu::find_partial_die. */ | |
1180 | partial_die_info (sect_offset sect_off) | |
1181 | : partial_die_info (sect_off, DW_TAG_padding, 0) | |
1182 | { | |
1183 | } | |
1184 | ||
1185 | partial_die_info (sect_offset sect_off_, enum dwarf_tag tag_, | |
1186 | int has_children_) | |
1187 | : sect_off (sect_off_), tag (tag_), has_children (has_children_) | |
1188 | { | |
1189 | is_external = 0; | |
1190 | is_declaration = 0; | |
1191 | has_type = 0; | |
1192 | has_specification = 0; | |
1193 | has_pc_info = 0; | |
1194 | may_be_inlined = 0; | |
1195 | main_subprogram = 0; | |
1196 | scope_set = 0; | |
1197 | has_byte_size = 0; | |
1198 | has_const_value = 0; | |
1199 | has_template_arguments = 0; | |
1200 | fixup_called = 0; | |
1201 | is_dwz = 0; | |
1202 | spec_is_dwz = 0; | |
1203 | } | |
c906108c SS |
1204 | }; |
1205 | ||
0963b4bd | 1206 | /* This data structure holds the information of an abbrev. */ |
c906108c SS |
1207 | struct abbrev_info |
1208 | { | |
1209 | unsigned int number; /* number identifying abbrev */ | |
1210 | enum dwarf_tag tag; /* dwarf tag */ | |
f3dd6933 DJ |
1211 | unsigned short has_children; /* boolean */ |
1212 | unsigned short num_attrs; /* number of attributes */ | |
c906108c SS |
1213 | struct attr_abbrev *attrs; /* an array of attribute descriptions */ |
1214 | struct abbrev_info *next; /* next in chain */ | |
1215 | }; | |
1216 | ||
1217 | struct attr_abbrev | |
1218 | { | |
9d25dd43 DE |
1219 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
1220 | ENUM_BITFIELD(dwarf_form) form : 16; | |
43988095 JK |
1221 | |
1222 | /* It is valid only if FORM is DW_FORM_implicit_const. */ | |
1223 | LONGEST implicit_const; | |
c906108c SS |
1224 | }; |
1225 | ||
433df2d4 DE |
1226 | /* Size of abbrev_table.abbrev_hash_table. */ |
1227 | #define ABBREV_HASH_SIZE 121 | |
1228 | ||
1229 | /* Top level data structure to contain an abbreviation table. */ | |
1230 | ||
1231 | struct abbrev_table | |
1232 | { | |
685af9cd TT |
1233 | explicit abbrev_table (sect_offset off) |
1234 | : sect_off (off) | |
1235 | { | |
4a17f768 | 1236 | m_abbrevs = |
685af9cd | 1237 | XOBNEWVEC (&abbrev_obstack, struct abbrev_info *, ABBREV_HASH_SIZE); |
4a17f768 | 1238 | memset (m_abbrevs, 0, ABBREV_HASH_SIZE * sizeof (struct abbrev_info *)); |
685af9cd TT |
1239 | } |
1240 | ||
1241 | DISABLE_COPY_AND_ASSIGN (abbrev_table); | |
1242 | ||
1243 | /* Allocate space for a struct abbrev_info object in | |
1244 | ABBREV_TABLE. */ | |
1245 | struct abbrev_info *alloc_abbrev (); | |
1246 | ||
1247 | /* Add an abbreviation to the table. */ | |
1248 | void add_abbrev (unsigned int abbrev_number, struct abbrev_info *abbrev); | |
1249 | ||
1250 | /* Look up an abbrev in the table. | |
1251 | Returns NULL if the abbrev is not found. */ | |
1252 | ||
1253 | struct abbrev_info *lookup_abbrev (unsigned int abbrev_number); | |
1254 | ||
1255 | ||
f4dc4d17 DE |
1256 | /* Where the abbrev table came from. |
1257 | This is used as a sanity check when the table is used. */ | |
685af9cd | 1258 | const sect_offset sect_off; |
433df2d4 DE |
1259 | |
1260 | /* Storage for the abbrev table. */ | |
685af9cd | 1261 | auto_obstack abbrev_obstack; |
433df2d4 | 1262 | |
4a17f768 YQ |
1263 | private: |
1264 | ||
433df2d4 DE |
1265 | /* Hash table of abbrevs. |
1266 | This is an array of size ABBREV_HASH_SIZE allocated in abbrev_obstack. | |
1267 | It could be statically allocated, but the previous code didn't so we | |
1268 | don't either. */ | |
4a17f768 | 1269 | struct abbrev_info **m_abbrevs; |
433df2d4 DE |
1270 | }; |
1271 | ||
685af9cd TT |
1272 | typedef std::unique_ptr<struct abbrev_table> abbrev_table_up; |
1273 | ||
0963b4bd | 1274 | /* Attributes have a name and a value. */ |
b60c80d6 DJ |
1275 | struct attribute |
1276 | { | |
9d25dd43 | 1277 | ENUM_BITFIELD(dwarf_attribute) name : 16; |
8285870a JK |
1278 | ENUM_BITFIELD(dwarf_form) form : 15; |
1279 | ||
1280 | /* Has DW_STRING already been updated by dwarf2_canonicalize_name? This | |
1281 | field should be in u.str (existing only for DW_STRING) but it is kept | |
1282 | here for better struct attribute alignment. */ | |
1283 | unsigned int string_is_canonical : 1; | |
1284 | ||
b60c80d6 DJ |
1285 | union |
1286 | { | |
15d034d0 | 1287 | const char *str; |
b60c80d6 | 1288 | struct dwarf_block *blk; |
43bbcdc2 PH |
1289 | ULONGEST unsnd; |
1290 | LONGEST snd; | |
b60c80d6 | 1291 | CORE_ADDR addr; |
ac9ec31b | 1292 | ULONGEST signature; |
b60c80d6 DJ |
1293 | } |
1294 | u; | |
1295 | }; | |
1296 | ||
0963b4bd | 1297 | /* This data structure holds a complete die structure. */ |
c906108c SS |
1298 | struct die_info |
1299 | { | |
76815b17 DE |
1300 | /* DWARF-2 tag for this DIE. */ |
1301 | ENUM_BITFIELD(dwarf_tag) tag : 16; | |
1302 | ||
1303 | /* Number of attributes */ | |
98bfdba5 PA |
1304 | unsigned char num_attrs; |
1305 | ||
1306 | /* True if we're presently building the full type name for the | |
1307 | type derived from this DIE. */ | |
1308 | unsigned char building_fullname : 1; | |
76815b17 | 1309 | |
adde2bff DE |
1310 | /* True if this die is in process. PR 16581. */ |
1311 | unsigned char in_process : 1; | |
1312 | ||
76815b17 DE |
1313 | /* Abbrev number */ |
1314 | unsigned int abbrev; | |
1315 | ||
93311388 | 1316 | /* Offset in .debug_info or .debug_types section. */ |
9c541725 | 1317 | sect_offset sect_off; |
78ba4af6 JB |
1318 | |
1319 | /* The dies in a compilation unit form an n-ary tree. PARENT | |
1320 | points to this die's parent; CHILD points to the first child of | |
1321 | this node; and all the children of a given node are chained | |
4950bc1c | 1322 | together via their SIBLING fields. */ |
639d11d3 DC |
1323 | struct die_info *child; /* Its first child, if any. */ |
1324 | struct die_info *sibling; /* Its next sibling, if any. */ | |
1325 | struct die_info *parent; /* Its parent, if any. */ | |
c906108c | 1326 | |
b60c80d6 DJ |
1327 | /* An array of attributes, with NUM_ATTRS elements. There may be |
1328 | zero, but it's not common and zero-sized arrays are not | |
1329 | sufficiently portable C. */ | |
1330 | struct attribute attrs[1]; | |
c906108c SS |
1331 | }; |
1332 | ||
0963b4bd | 1333 | /* Get at parts of an attribute structure. */ |
c906108c SS |
1334 | |
1335 | #define DW_STRING(attr) ((attr)->u.str) | |
8285870a | 1336 | #define DW_STRING_IS_CANONICAL(attr) ((attr)->string_is_canonical) |
c906108c SS |
1337 | #define DW_UNSND(attr) ((attr)->u.unsnd) |
1338 | #define DW_BLOCK(attr) ((attr)->u.blk) | |
1339 | #define DW_SND(attr) ((attr)->u.snd) | |
1340 | #define DW_ADDR(attr) ((attr)->u.addr) | |
ac9ec31b | 1341 | #define DW_SIGNATURE(attr) ((attr)->u.signature) |
c906108c | 1342 | |
0963b4bd | 1343 | /* Blocks are a bunch of untyped bytes. */ |
c906108c SS |
1344 | struct dwarf_block |
1345 | { | |
56eb65bd | 1346 | size_t size; |
1d6edc3c JK |
1347 | |
1348 | /* Valid only if SIZE is not zero. */ | |
d521ce57 | 1349 | const gdb_byte *data; |
c906108c SS |
1350 | }; |
1351 | ||
c906108c SS |
1352 | #ifndef ATTR_ALLOC_CHUNK |
1353 | #define ATTR_ALLOC_CHUNK 4 | |
1354 | #endif | |
1355 | ||
c906108c SS |
1356 | /* Allocate fields for structs, unions and enums in this size. */ |
1357 | #ifndef DW_FIELD_ALLOC_CHUNK | |
1358 | #define DW_FIELD_ALLOC_CHUNK 4 | |
1359 | #endif | |
1360 | ||
c906108c SS |
1361 | /* FIXME: We might want to set this from BFD via bfd_arch_bits_per_byte, |
1362 | but this would require a corresponding change in unpack_field_as_long | |
1363 | and friends. */ | |
1364 | static int bits_per_byte = 8; | |
1365 | ||
2ddeaf8a TT |
1366 | /* When reading a variant or variant part, we track a bit more |
1367 | information about the field, and store it in an object of this | |
1368 | type. */ | |
1369 | ||
1370 | struct variant_field | |
1371 | { | |
1372 | /* If we see a DW_TAG_variant, then this will be the discriminant | |
1373 | value. */ | |
1374 | ULONGEST discriminant_value; | |
1375 | /* If we see a DW_TAG_variant, then this will be set if this is the | |
1376 | default branch. */ | |
1377 | bool default_branch; | |
1378 | /* While reading a DW_TAG_variant_part, this will be set if this | |
1379 | field is the discriminant. */ | |
1380 | bool is_discriminant; | |
1381 | }; | |
1382 | ||
52059ffd TT |
1383 | struct nextfield |
1384 | { | |
be2daae6 TT |
1385 | int accessibility = 0; |
1386 | int virtuality = 0; | |
2ddeaf8a | 1387 | /* Extra information to describe a variant or variant part. */ |
be2daae6 TT |
1388 | struct variant_field variant {}; |
1389 | struct field field {}; | |
52059ffd TT |
1390 | }; |
1391 | ||
1392 | struct fnfieldlist | |
1393 | { | |
be2daae6 TT |
1394 | const char *name = nullptr; |
1395 | std::vector<struct fn_field> fnfields; | |
52059ffd TT |
1396 | }; |
1397 | ||
c906108c SS |
1398 | /* The routines that read and process dies for a C struct or C++ class |
1399 | pass lists of data member fields and lists of member function fields | |
1400 | in an instance of a field_info structure, as defined below. */ | |
1401 | struct field_info | |
c5aa993b | 1402 | { |
0963b4bd | 1403 | /* List of data member and baseclasses fields. */ |
be2daae6 TT |
1404 | std::vector<struct nextfield> fields; |
1405 | std::vector<struct nextfield> baseclasses; | |
c906108c | 1406 | |
7d0ccb61 | 1407 | /* Number of fields (including baseclasses). */ |
be2daae6 | 1408 | int nfields = 0; |
c906108c | 1409 | |
c5aa993b | 1410 | /* Set if the accesibility of one of the fields is not public. */ |
be2daae6 | 1411 | int non_public_fields = 0; |
c906108c | 1412 | |
c5aa993b JM |
1413 | /* Member function fieldlist array, contains name of possibly overloaded |
1414 | member function, number of overloaded member functions and a pointer | |
1415 | to the head of the member function field chain. */ | |
be2daae6 | 1416 | std::vector<struct fnfieldlist> fnfieldlists; |
98751a41 JK |
1417 | |
1418 | /* typedefs defined inside this class. TYPEDEF_FIELD_LIST contains head of | |
1419 | a NULL terminated list of TYPEDEF_FIELD_LIST_COUNT elements. */ | |
be2daae6 | 1420 | std::vector<struct decl_field> typedef_field_list; |
883fd55a KS |
1421 | |
1422 | /* Nested types defined by this class and the number of elements in this | |
1423 | list. */ | |
be2daae6 | 1424 | std::vector<struct decl_field> nested_types_list; |
c5aa993b | 1425 | }; |
c906108c | 1426 | |
10b3939b DJ |
1427 | /* One item on the queue of compilation units to read in full symbols |
1428 | for. */ | |
1429 | struct dwarf2_queue_item | |
1430 | { | |
1431 | struct dwarf2_per_cu_data *per_cu; | |
95554aad | 1432 | enum language pretend_language; |
10b3939b DJ |
1433 | struct dwarf2_queue_item *next; |
1434 | }; | |
1435 | ||
1436 | /* The current queue. */ | |
1437 | static struct dwarf2_queue_item *dwarf2_queue, *dwarf2_queue_tail; | |
1438 | ||
ae038cb0 DJ |
1439 | /* Loaded secondary compilation units are kept in memory until they |
1440 | have not been referenced for the processing of this many | |
1441 | compilation units. Set this to zero to disable caching. Cache | |
1442 | sizes of up to at least twenty will improve startup time for | |
1443 | typical inter-CU-reference binaries, at an obvious memory cost. */ | |
b4f54984 | 1444 | static int dwarf_max_cache_age = 5; |
920d2a44 | 1445 | static void |
b4f54984 DE |
1446 | show_dwarf_max_cache_age (struct ui_file *file, int from_tty, |
1447 | struct cmd_list_element *c, const char *value) | |
920d2a44 | 1448 | { |
3e43a32a | 1449 | fprintf_filtered (file, _("The upper bound on the age of cached " |
b4f54984 | 1450 | "DWARF compilation units is %s.\n"), |
920d2a44 AC |
1451 | value); |
1452 | } | |
4390d890 | 1453 | \f |
c906108c SS |
1454 | /* local function prototypes */ |
1455 | ||
a32a8923 DE |
1456 | static const char *get_section_name (const struct dwarf2_section_info *); |
1457 | ||
1458 | static const char *get_section_file_name (const struct dwarf2_section_info *); | |
1459 | ||
918dd910 JK |
1460 | static void dwarf2_find_base_address (struct die_info *die, |
1461 | struct dwarf2_cu *cu); | |
1462 | ||
0018ea6f DE |
1463 | static struct partial_symtab *create_partial_symtab |
1464 | (struct dwarf2_per_cu_data *per_cu, const char *name); | |
1465 | ||
f1902523 JK |
1466 | static void build_type_psymtabs_reader (const struct die_reader_specs *reader, |
1467 | const gdb_byte *info_ptr, | |
1468 | struct die_info *type_unit_die, | |
1469 | int has_children, void *data); | |
1470 | ||
ed2dc618 SM |
1471 | static void dwarf2_build_psymtabs_hard |
1472 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
c906108c | 1473 | |
72bf9492 DJ |
1474 | static void scan_partial_symbols (struct partial_die_info *, |
1475 | CORE_ADDR *, CORE_ADDR *, | |
5734ee8b | 1476 | int, struct dwarf2_cu *); |
c906108c | 1477 | |
72bf9492 DJ |
1478 | static void add_partial_symbol (struct partial_die_info *, |
1479 | struct dwarf2_cu *); | |
63d06c5c | 1480 | |
72bf9492 DJ |
1481 | static void add_partial_namespace (struct partial_die_info *pdi, |
1482 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 1483 | int set_addrmap, struct dwarf2_cu *cu); |
63d06c5c | 1484 | |
5d7cb8df | 1485 | static void add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, |
cdc07690 | 1486 | CORE_ADDR *highpc, int set_addrmap, |
5d7cb8df JK |
1487 | struct dwarf2_cu *cu); |
1488 | ||
72bf9492 DJ |
1489 | static void add_partial_enumeration (struct partial_die_info *enum_pdi, |
1490 | struct dwarf2_cu *cu); | |
91c24f0a | 1491 | |
bc30ff58 JB |
1492 | static void add_partial_subprogram (struct partial_die_info *pdi, |
1493 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
5734ee8b | 1494 | int need_pc, struct dwarf2_cu *cu); |
bc30ff58 | 1495 | |
257e7a09 YQ |
1496 | static void dwarf2_read_symtab (struct partial_symtab *, |
1497 | struct objfile *); | |
c906108c | 1498 | |
a14ed312 | 1499 | static void psymtab_to_symtab_1 (struct partial_symtab *); |
c906108c | 1500 | |
685af9cd | 1501 | static abbrev_table_up abbrev_table_read_table |
ed2dc618 SM |
1502 | (struct dwarf2_per_objfile *dwarf2_per_objfile, struct dwarf2_section_info *, |
1503 | sect_offset); | |
433df2d4 | 1504 | |
d521ce57 | 1505 | static unsigned int peek_abbrev_code (bfd *, const gdb_byte *); |
6caca83c | 1506 | |
dee91e82 | 1507 | static struct partial_die_info *load_partial_dies |
d521ce57 | 1508 | (const struct die_reader_specs *, const gdb_byte *, int); |
72bf9492 | 1509 | |
fb816e8b TV |
1510 | /* A pair of partial_die_info and compilation unit. */ |
1511 | struct cu_partial_die_info | |
1512 | { | |
1513 | /* The compilation unit of the partial_die_info. */ | |
1514 | struct dwarf2_cu *cu; | |
1515 | /* A partial_die_info. */ | |
1516 | struct partial_die_info *pdi; | |
122cf0f2 AB |
1517 | |
1518 | cu_partial_die_info (struct dwarf2_cu *cu, struct partial_die_info *pdi) | |
1519 | : cu (cu), | |
1520 | pdi (pdi) | |
1521 | { /* Nothhing. */ } | |
1522 | ||
1523 | private: | |
1524 | cu_partial_die_info () = delete; | |
fb816e8b TV |
1525 | }; |
1526 | ||
122cf0f2 AB |
1527 | static const struct cu_partial_die_info find_partial_die (sect_offset, int, |
1528 | struct dwarf2_cu *); | |
72bf9492 | 1529 | |
d521ce57 TT |
1530 | static const gdb_byte *read_attribute (const struct die_reader_specs *, |
1531 | struct attribute *, struct attr_abbrev *, | |
1532 | const gdb_byte *); | |
a8329558 | 1533 | |
a1855c1d | 1534 | static unsigned int read_1_byte (bfd *, const gdb_byte *); |
c906108c | 1535 | |
a1855c1d | 1536 | static int read_1_signed_byte (bfd *, const gdb_byte *); |
c906108c | 1537 | |
a1855c1d | 1538 | static unsigned int read_2_bytes (bfd *, const gdb_byte *); |
c906108c | 1539 | |
15f18d14 AT |
1540 | /* Read the next three bytes (little-endian order) as an unsigned integer. */ |
1541 | static unsigned int read_3_bytes (bfd *, const gdb_byte *); | |
1542 | ||
a1855c1d | 1543 | static unsigned int read_4_bytes (bfd *, const gdb_byte *); |
c906108c | 1544 | |
a1855c1d | 1545 | static ULONGEST read_8_bytes (bfd *, const gdb_byte *); |
c906108c | 1546 | |
d521ce57 | 1547 | static CORE_ADDR read_address (bfd *, const gdb_byte *ptr, struct dwarf2_cu *, |
891d2f0b | 1548 | unsigned int *); |
c906108c | 1549 | |
d521ce57 | 1550 | static LONGEST read_initial_length (bfd *, const gdb_byte *, unsigned int *); |
c764a876 DE |
1551 | |
1552 | static LONGEST read_checked_initial_length_and_offset | |
d521ce57 | 1553 | (bfd *, const gdb_byte *, const struct comp_unit_head *, |
c764a876 | 1554 | unsigned int *, unsigned int *); |
613e1657 | 1555 | |
d521ce57 TT |
1556 | static LONGEST read_offset (bfd *, const gdb_byte *, |
1557 | const struct comp_unit_head *, | |
c764a876 DE |
1558 | unsigned int *); |
1559 | ||
d521ce57 | 1560 | static LONGEST read_offset_1 (bfd *, const gdb_byte *, unsigned int); |
613e1657 | 1561 | |
ed2dc618 SM |
1562 | static sect_offset read_abbrev_offset |
1563 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
1564 | struct dwarf2_section_info *, sect_offset); | |
f4dc4d17 | 1565 | |
d521ce57 | 1566 | static const gdb_byte *read_n_bytes (bfd *, const gdb_byte *, unsigned int); |
c906108c | 1567 | |
d521ce57 | 1568 | static const char *read_direct_string (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1569 | |
ed2dc618 SM |
1570 | static const char *read_indirect_string |
1571 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1572 | const struct comp_unit_head *, unsigned int *); | |
4bdf3d34 | 1573 | |
ed2dc618 SM |
1574 | static const char *read_indirect_line_string |
1575 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *, const gdb_byte *, | |
1576 | const struct comp_unit_head *, unsigned int *); | |
36586728 | 1577 | |
ed2dc618 SM |
1578 | static const char *read_indirect_string_at_offset |
1579 | (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, | |
1580 | LONGEST str_offset); | |
927aa2e7 | 1581 | |
ed2dc618 SM |
1582 | static const char *read_indirect_string_from_dwz |
1583 | (struct objfile *objfile, struct dwz_file *, LONGEST); | |
c906108c | 1584 | |
d521ce57 | 1585 | static LONGEST read_signed_leb128 (bfd *, const gdb_byte *, unsigned int *); |
c906108c | 1586 | |
d521ce57 TT |
1587 | static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *, |
1588 | const gdb_byte *, | |
3019eac3 DE |
1589 | unsigned int *); |
1590 | ||
d521ce57 | 1591 | static const char *read_str_index (const struct die_reader_specs *reader, |
342587c4 | 1592 | ULONGEST str_index); |
3019eac3 | 1593 | |
e142c38c | 1594 | static void set_cu_language (unsigned int, struct dwarf2_cu *); |
c906108c | 1595 | |
e142c38c DJ |
1596 | static struct attribute *dwarf2_attr (struct die_info *, unsigned int, |
1597 | struct dwarf2_cu *); | |
c906108c | 1598 | |
348e048f | 1599 | static struct attribute *dwarf2_attr_no_follow (struct die_info *, |
45e58e77 | 1600 | unsigned int); |
348e048f | 1601 | |
7d45c7c3 KB |
1602 | static const char *dwarf2_string_attr (struct die_info *die, unsigned int name, |
1603 | struct dwarf2_cu *cu); | |
1604 | ||
05cf31d1 JB |
1605 | static int dwarf2_flag_true_p (struct die_info *die, unsigned name, |
1606 | struct dwarf2_cu *cu); | |
1607 | ||
e142c38c | 1608 | static int die_is_declaration (struct die_info *, struct dwarf2_cu *cu); |
3ca72b44 | 1609 | |
e142c38c | 1610 | static struct die_info *die_specification (struct die_info *die, |
f2f0e013 | 1611 | struct dwarf2_cu **); |
63d06c5c | 1612 | |
9c541725 | 1613 | static line_header_up dwarf_decode_line_header (sect_offset sect_off, |
fff8551c | 1614 | struct dwarf2_cu *cu); |
debd256d | 1615 | |
f3f5162e | 1616 | static void dwarf_decode_lines (struct line_header *, const char *, |
c3b7b696 | 1617 | struct dwarf2_cu *, struct partial_symtab *, |
527f3840 | 1618 | CORE_ADDR, int decode_mapping); |
c906108c | 1619 | |
804d2729 TT |
1620 | static void dwarf2_start_subfile (struct dwarf2_cu *, const char *, |
1621 | const char *); | |
c906108c | 1622 | |
a14ed312 | 1623 | static struct symbol *new_symbol (struct die_info *, struct type *, |
5e2db402 | 1624 | struct dwarf2_cu *, struct symbol * = NULL); |
34eaf542 | 1625 | |
ff39bb5e | 1626 | static void dwarf2_const_value (const struct attribute *, struct symbol *, |
e7c27a73 | 1627 | struct dwarf2_cu *); |
c906108c | 1628 | |
ff39bb5e | 1629 | static void dwarf2_const_value_attr (const struct attribute *attr, |
98bfdba5 PA |
1630 | struct type *type, |
1631 | const char *name, | |
1632 | struct obstack *obstack, | |
12df843f | 1633 | struct dwarf2_cu *cu, LONGEST *value, |
d521ce57 | 1634 | const gdb_byte **bytes, |
98bfdba5 | 1635 | struct dwarf2_locexpr_baton **baton); |
2df3850c | 1636 | |
e7c27a73 | 1637 | static struct type *die_type (struct die_info *, struct dwarf2_cu *); |
c906108c | 1638 | |
b4ba55a1 JB |
1639 | static int need_gnat_info (struct dwarf2_cu *); |
1640 | ||
3e43a32a MS |
1641 | static struct type *die_descriptive_type (struct die_info *, |
1642 | struct dwarf2_cu *); | |
b4ba55a1 JB |
1643 | |
1644 | static void set_descriptive_type (struct type *, struct die_info *, | |
1645 | struct dwarf2_cu *); | |
1646 | ||
e7c27a73 DJ |
1647 | static struct type *die_containing_type (struct die_info *, |
1648 | struct dwarf2_cu *); | |
c906108c | 1649 | |
ff39bb5e | 1650 | static struct type *lookup_die_type (struct die_info *, const struct attribute *, |
673bfd45 | 1651 | struct dwarf2_cu *); |
c906108c | 1652 | |
f792889a | 1653 | static struct type *read_type_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1654 | |
673bfd45 DE |
1655 | static struct type *read_type_die_1 (struct die_info *, struct dwarf2_cu *); |
1656 | ||
0d5cff50 | 1657 | static const char *determine_prefix (struct die_info *die, struct dwarf2_cu *); |
63d06c5c | 1658 | |
6e70227d | 1659 | static char *typename_concat (struct obstack *obs, const char *prefix, |
f55ee35c JK |
1660 | const char *suffix, int physname, |
1661 | struct dwarf2_cu *cu); | |
63d06c5c | 1662 | |
e7c27a73 | 1663 | static void read_file_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1664 | |
348e048f DE |
1665 | static void read_type_unit_scope (struct die_info *, struct dwarf2_cu *); |
1666 | ||
e7c27a73 | 1667 | static void read_func_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1668 | |
e7c27a73 | 1669 | static void read_lexical_block_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1670 | |
96408a79 SA |
1671 | static void read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu); |
1672 | ||
71a3c369 TT |
1673 | static void read_variable (struct die_info *die, struct dwarf2_cu *cu); |
1674 | ||
ff013f42 JK |
1675 | static int dwarf2_ranges_read (unsigned, CORE_ADDR *, CORE_ADDR *, |
1676 | struct dwarf2_cu *, struct partial_symtab *); | |
1677 | ||
3a2b436a | 1678 | /* How dwarf2_get_pc_bounds constructed its *LOWPC and *HIGHPC return |
e385593e | 1679 | values. Keep the items ordered with increasing constraints compliance. */ |
3a2b436a JK |
1680 | enum pc_bounds_kind |
1681 | { | |
e385593e | 1682 | /* No attribute DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges was found. */ |
3a2b436a JK |
1683 | PC_BOUNDS_NOT_PRESENT, |
1684 | ||
e385593e JK |
1685 | /* Some of the attributes DW_AT_low_pc, DW_AT_high_pc or DW_AT_ranges |
1686 | were present but they do not form a valid range of PC addresses. */ | |
1687 | PC_BOUNDS_INVALID, | |
1688 | ||
3a2b436a JK |
1689 | /* Discontiguous range was found - that is DW_AT_ranges was found. */ |
1690 | PC_BOUNDS_RANGES, | |
1691 | ||
1692 | /* Contiguous range was found - DW_AT_low_pc and DW_AT_high_pc were found. */ | |
1693 | PC_BOUNDS_HIGH_LOW, | |
1694 | }; | |
1695 | ||
1696 | static enum pc_bounds_kind dwarf2_get_pc_bounds (struct die_info *, | |
1697 | CORE_ADDR *, CORE_ADDR *, | |
1698 | struct dwarf2_cu *, | |
1699 | struct partial_symtab *); | |
c906108c | 1700 | |
fae299cd DC |
1701 | static void get_scope_pc_bounds (struct die_info *, |
1702 | CORE_ADDR *, CORE_ADDR *, | |
1703 | struct dwarf2_cu *); | |
1704 | ||
801e3a5b JB |
1705 | static void dwarf2_record_block_ranges (struct die_info *, struct block *, |
1706 | CORE_ADDR, struct dwarf2_cu *); | |
1707 | ||
a14ed312 | 1708 | static void dwarf2_add_field (struct field_info *, struct die_info *, |
e7c27a73 | 1709 | struct dwarf2_cu *); |
c906108c | 1710 | |
a14ed312 | 1711 | static void dwarf2_attach_fields_to_type (struct field_info *, |
e7c27a73 | 1712 | struct type *, struct dwarf2_cu *); |
c906108c | 1713 | |
a14ed312 | 1714 | static void dwarf2_add_member_fn (struct field_info *, |
e26fb1d7 | 1715 | struct die_info *, struct type *, |
e7c27a73 | 1716 | struct dwarf2_cu *); |
c906108c | 1717 | |
a14ed312 | 1718 | static void dwarf2_attach_fn_fields_to_type (struct field_info *, |
3e43a32a MS |
1719 | struct type *, |
1720 | struct dwarf2_cu *); | |
c906108c | 1721 | |
134d01f1 | 1722 | static void process_structure_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1723 | |
e7c27a73 | 1724 | static void read_common_block (struct die_info *, struct dwarf2_cu *); |
c906108c | 1725 | |
e7c27a73 | 1726 | static void read_namespace (struct die_info *die, struct dwarf2_cu *); |
d9fa45fe | 1727 | |
5d7cb8df JK |
1728 | static void read_module (struct die_info *die, struct dwarf2_cu *cu); |
1729 | ||
804d2729 | 1730 | static struct using_direct **using_directives (struct dwarf2_cu *cu); |
22cee43f | 1731 | |
27aa8d6a SW |
1732 | static void read_import_statement (struct die_info *die, struct dwarf2_cu *); |
1733 | ||
74921315 KS |
1734 | static int read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu); |
1735 | ||
f55ee35c JK |
1736 | static struct type *read_module_type (struct die_info *die, |
1737 | struct dwarf2_cu *cu); | |
1738 | ||
38d518c9 | 1739 | static const char *namespace_name (struct die_info *die, |
e142c38c | 1740 | int *is_anonymous, struct dwarf2_cu *); |
38d518c9 | 1741 | |
134d01f1 | 1742 | static void process_enumeration_scope (struct die_info *, struct dwarf2_cu *); |
c906108c | 1743 | |
e7c27a73 | 1744 | static CORE_ADDR decode_locdesc (struct dwarf_block *, struct dwarf2_cu *); |
c906108c | 1745 | |
6e70227d | 1746 | static enum dwarf_array_dim_ordering read_array_order (struct die_info *, |
7ca2d3a3 DL |
1747 | struct dwarf2_cu *); |
1748 | ||
bf6af496 | 1749 | static struct die_info *read_die_and_siblings_1 |
d521ce57 | 1750 | (const struct die_reader_specs *, const gdb_byte *, const gdb_byte **, |
bf6af496 | 1751 | struct die_info *); |
639d11d3 | 1752 | |
dee91e82 | 1753 | static struct die_info *read_die_and_siblings (const struct die_reader_specs *, |
d521ce57 TT |
1754 | const gdb_byte *info_ptr, |
1755 | const gdb_byte **new_info_ptr, | |
639d11d3 DC |
1756 | struct die_info *parent); |
1757 | ||
d521ce57 TT |
1758 | static const gdb_byte *read_full_die_1 (const struct die_reader_specs *, |
1759 | struct die_info **, const gdb_byte *, | |
1760 | int *, int); | |
3019eac3 | 1761 | |
d521ce57 TT |
1762 | static const gdb_byte *read_full_die (const struct die_reader_specs *, |
1763 | struct die_info **, const gdb_byte *, | |
1764 | int *); | |
93311388 | 1765 | |
e7c27a73 | 1766 | static void process_die (struct die_info *, struct dwarf2_cu *); |
c906108c | 1767 | |
15d034d0 TT |
1768 | static const char *dwarf2_canonicalize_name (const char *, struct dwarf2_cu *, |
1769 | struct obstack *); | |
71c25dea | 1770 | |
15d034d0 | 1771 | static const char *dwarf2_name (struct die_info *die, struct dwarf2_cu *); |
9219021c | 1772 | |
15d034d0 | 1773 | static const char *dwarf2_full_name (const char *name, |
98bfdba5 PA |
1774 | struct die_info *die, |
1775 | struct dwarf2_cu *cu); | |
1776 | ||
ca69b9e6 DE |
1777 | static const char *dwarf2_physname (const char *name, struct die_info *die, |
1778 | struct dwarf2_cu *cu); | |
1779 | ||
e142c38c | 1780 | static struct die_info *dwarf2_extension (struct die_info *die, |
f2f0e013 | 1781 | struct dwarf2_cu **); |
9219021c | 1782 | |
f39c6ffd | 1783 | static const char *dwarf_tag_name (unsigned int); |
c906108c | 1784 | |
f39c6ffd | 1785 | static const char *dwarf_attr_name (unsigned int); |
c906108c | 1786 | |
f39c6ffd | 1787 | static const char *dwarf_form_name (unsigned int); |
c906108c | 1788 | |
a121b7c1 | 1789 | static const char *dwarf_bool_name (unsigned int); |
c906108c | 1790 | |
f39c6ffd | 1791 | static const char *dwarf_type_encoding_name (unsigned int); |
c906108c | 1792 | |
f9aca02d | 1793 | static struct die_info *sibling_die (struct die_info *); |
c906108c | 1794 | |
d97bc12b DE |
1795 | static void dump_die_shallow (struct ui_file *, int indent, struct die_info *); |
1796 | ||
1797 | static void dump_die_for_error (struct die_info *); | |
1798 | ||
1799 | static void dump_die_1 (struct ui_file *, int level, int max_level, | |
1800 | struct die_info *); | |
c906108c | 1801 | |
d97bc12b | 1802 | /*static*/ void dump_die (struct die_info *, int max_level); |
c906108c | 1803 | |
51545339 | 1804 | static void store_in_ref_table (struct die_info *, |
10b3939b | 1805 | struct dwarf2_cu *); |
c906108c | 1806 | |
ff39bb5e | 1807 | static sect_offset dwarf2_get_ref_die_offset (const struct attribute *); |
c906108c | 1808 | |
ff39bb5e | 1809 | static LONGEST dwarf2_get_attr_constant_value (const struct attribute *, int); |
a02abb62 | 1810 | |
348e048f | 1811 | static struct die_info *follow_die_ref_or_sig (struct die_info *, |
ff39bb5e | 1812 | const struct attribute *, |
348e048f DE |
1813 | struct dwarf2_cu **); |
1814 | ||
10b3939b | 1815 | static struct die_info *follow_die_ref (struct die_info *, |
ff39bb5e | 1816 | const struct attribute *, |
f2f0e013 | 1817 | struct dwarf2_cu **); |
c906108c | 1818 | |
348e048f | 1819 | static struct die_info *follow_die_sig (struct die_info *, |
ff39bb5e | 1820 | const struct attribute *, |
348e048f DE |
1821 | struct dwarf2_cu **); |
1822 | ||
ac9ec31b DE |
1823 | static struct type *get_signatured_type (struct die_info *, ULONGEST, |
1824 | struct dwarf2_cu *); | |
1825 | ||
1826 | static struct type *get_DW_AT_signature_type (struct die_info *, | |
ff39bb5e | 1827 | const struct attribute *, |
ac9ec31b DE |
1828 | struct dwarf2_cu *); |
1829 | ||
e5fe5e75 | 1830 | static void load_full_type_unit (struct dwarf2_per_cu_data *per_cu); |
348e048f | 1831 | |
52dc124a | 1832 | static void read_signatured_type (struct signatured_type *); |
348e048f | 1833 | |
63e43d3a PMR |
1834 | static int attr_to_dynamic_prop (const struct attribute *attr, |
1835 | struct die_info *die, struct dwarf2_cu *cu, | |
1836 | struct dynamic_prop *prop); | |
1837 | ||
c906108c SS |
1838 | /* memory allocation interface */ |
1839 | ||
7b5a2f43 | 1840 | static struct dwarf_block *dwarf_alloc_block (struct dwarf2_cu *); |
c906108c | 1841 | |
b60c80d6 | 1842 | static struct die_info *dwarf_alloc_die (struct dwarf2_cu *, int); |
c906108c | 1843 | |
43f3e411 | 1844 | static void dwarf_decode_macros (struct dwarf2_cu *, unsigned int, int); |
2e276125 | 1845 | |
6e5a29e1 | 1846 | static int attr_form_is_block (const struct attribute *); |
8e19ed76 | 1847 | |
6e5a29e1 | 1848 | static int attr_form_is_section_offset (const struct attribute *); |
3690dd37 | 1849 | |
6e5a29e1 | 1850 | static int attr_form_is_constant (const struct attribute *); |
3690dd37 | 1851 | |
6e5a29e1 | 1852 | static int attr_form_is_ref (const struct attribute *); |
7771576e | 1853 | |
8cf6f0b1 TT |
1854 | static void fill_in_loclist_baton (struct dwarf2_cu *cu, |
1855 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 1856 | const struct attribute *attr); |
8cf6f0b1 | 1857 | |
ff39bb5e | 1858 | static void dwarf2_symbol_mark_computed (const struct attribute *attr, |
93e7bd98 | 1859 | struct symbol *sym, |
f1e6e072 TT |
1860 | struct dwarf2_cu *cu, |
1861 | int is_block); | |
4c2df51b | 1862 | |
d521ce57 TT |
1863 | static const gdb_byte *skip_one_die (const struct die_reader_specs *reader, |
1864 | const gdb_byte *info_ptr, | |
1865 | struct abbrev_info *abbrev); | |
4bb7a0a7 | 1866 | |
72bf9492 DJ |
1867 | static hashval_t partial_die_hash (const void *item); |
1868 | ||
1869 | static int partial_die_eq (const void *item_lhs, const void *item_rhs); | |
1870 | ||
ae038cb0 | 1871 | static struct dwarf2_per_cu_data *dwarf2_find_containing_comp_unit |
ed2dc618 SM |
1872 | (sect_offset sect_off, unsigned int offset_in_dwz, |
1873 | struct dwarf2_per_objfile *dwarf2_per_objfile); | |
ae038cb0 | 1874 | |
9816fde3 | 1875 | static void prepare_one_comp_unit (struct dwarf2_cu *cu, |
95554aad TT |
1876 | struct die_info *comp_unit_die, |
1877 | enum language pretend_language); | |
93311388 | 1878 | |
ed2dc618 | 1879 | static void age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1880 | |
dee91e82 | 1881 | static void free_one_cached_comp_unit (struct dwarf2_per_cu_data *); |
ae038cb0 | 1882 | |
f792889a DJ |
1883 | static struct type *set_die_type (struct die_info *, struct type *, |
1884 | struct dwarf2_cu *); | |
1c379e20 | 1885 | |
ed2dc618 | 1886 | static void create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
ae038cb0 | 1887 | |
ed2dc618 | 1888 | static int create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile); |
1fd400ff | 1889 | |
58f0c718 | 1890 | static void load_full_comp_unit (struct dwarf2_per_cu_data *, bool, |
95554aad | 1891 | enum language); |
10b3939b | 1892 | |
95554aad TT |
1893 | static void process_full_comp_unit (struct dwarf2_per_cu_data *, |
1894 | enum language); | |
10b3939b | 1895 | |
f4dc4d17 DE |
1896 | static void process_full_type_unit (struct dwarf2_per_cu_data *, |
1897 | enum language); | |
1898 | ||
10b3939b DJ |
1899 | static void dwarf2_add_dependence (struct dwarf2_cu *, |
1900 | struct dwarf2_per_cu_data *); | |
1901 | ||
ae038cb0 DJ |
1902 | static void dwarf2_mark (struct dwarf2_cu *); |
1903 | ||
1904 | static void dwarf2_clear_marks (struct dwarf2_per_cu_data *); | |
1905 | ||
b64f50a1 | 1906 | static struct type *get_die_type_at_offset (sect_offset, |
ac9ec31b | 1907 | struct dwarf2_per_cu_data *); |
673bfd45 | 1908 | |
f792889a | 1909 | static struct type *get_die_type (struct die_info *die, struct dwarf2_cu *cu); |
72019c9c | 1910 | |
95554aad TT |
1911 | static void queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
1912 | enum language pretend_language); | |
1913 | ||
ed2dc618 | 1914 | static void process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile); |
9291a0cd | 1915 | |
b303c6f6 AB |
1916 | /* Class, the destructor of which frees all allocated queue entries. This |
1917 | will only have work to do if an error was thrown while processing the | |
1918 | dwarf. If no error was thrown then the queue entries should have all | |
1919 | been processed, and freed, as we went along. */ | |
1920 | ||
1921 | class dwarf2_queue_guard | |
1922 | { | |
1923 | public: | |
1924 | dwarf2_queue_guard () = default; | |
1925 | ||
1926 | /* Free any entries remaining on the queue. There should only be | |
1927 | entries left if we hit an error while processing the dwarf. */ | |
1928 | ~dwarf2_queue_guard () | |
1929 | { | |
1930 | struct dwarf2_queue_item *item, *last; | |
1931 | ||
1932 | item = dwarf2_queue; | |
1933 | while (item) | |
1934 | { | |
1935 | /* Anything still marked queued is likely to be in an | |
1936 | inconsistent state, so discard it. */ | |
1937 | if (item->per_cu->queued) | |
1938 | { | |
1939 | if (item->per_cu->cu != NULL) | |
1940 | free_one_cached_comp_unit (item->per_cu); | |
1941 | item->per_cu->queued = 0; | |
1942 | } | |
1943 | ||
1944 | last = item; | |
1945 | item = item->next; | |
1946 | xfree (last); | |
1947 | } | |
1948 | ||
1949 | dwarf2_queue = dwarf2_queue_tail = NULL; | |
1950 | } | |
1951 | }; | |
1952 | ||
d721ba37 PA |
1953 | /* The return type of find_file_and_directory. Note, the enclosed |
1954 | string pointers are only valid while this object is valid. */ | |
1955 | ||
1956 | struct file_and_directory | |
1957 | { | |
1958 | /* The filename. This is never NULL. */ | |
1959 | const char *name; | |
1960 | ||
1961 | /* The compilation directory. NULL if not known. If we needed to | |
1962 | compute a new string, this points to COMP_DIR_STORAGE, otherwise, | |
1963 | points directly to the DW_AT_comp_dir string attribute owned by | |
1964 | the obstack that owns the DIE. */ | |
1965 | const char *comp_dir; | |
1966 | ||
1967 | /* If we needed to build a new string for comp_dir, this is what | |
1968 | owns the storage. */ | |
1969 | std::string comp_dir_storage; | |
1970 | }; | |
1971 | ||
1972 | static file_and_directory find_file_and_directory (struct die_info *die, | |
1973 | struct dwarf2_cu *cu); | |
9291a0cd TT |
1974 | |
1975 | static char *file_full_name (int file, struct line_header *lh, | |
1976 | const char *comp_dir); | |
1977 | ||
43988095 JK |
1978 | /* Expected enum dwarf_unit_type for read_comp_unit_head. */ |
1979 | enum class rcuh_kind { COMPILE, TYPE }; | |
1980 | ||
d521ce57 | 1981 | static const gdb_byte *read_and_check_comp_unit_head |
ed2dc618 SM |
1982 | (struct dwarf2_per_objfile* dwarf2_per_objfile, |
1983 | struct comp_unit_head *header, | |
36586728 | 1984 | struct dwarf2_section_info *section, |
d521ce57 | 1985 | struct dwarf2_section_info *abbrev_section, const gdb_byte *info_ptr, |
43988095 | 1986 | rcuh_kind section_kind); |
36586728 | 1987 | |
fd820528 | 1988 | static void init_cutu_and_read_dies |
f4dc4d17 | 1989 | (struct dwarf2_per_cu_data *this_cu, struct abbrev_table *abbrev_table, |
58f0c718 | 1990 | int use_existing_cu, int keep, bool skip_partial, |
3019eac3 DE |
1991 | die_reader_func_ftype *die_reader_func, void *data); |
1992 | ||
dee91e82 DE |
1993 | static void init_cutu_and_read_dies_simple |
1994 | (struct dwarf2_per_cu_data *this_cu, | |
1995 | die_reader_func_ftype *die_reader_func, void *data); | |
9291a0cd | 1996 | |
673bfd45 | 1997 | static htab_t allocate_signatured_type_table (struct objfile *objfile); |
1fd400ff | 1998 | |
3019eac3 DE |
1999 | static htab_t allocate_dwo_unit_table (struct objfile *objfile); |
2000 | ||
57d63ce2 | 2001 | static struct dwo_unit *lookup_dwo_unit_in_dwp |
ed2dc618 SM |
2002 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2003 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 2004 | ULONGEST signature, int is_debug_types); |
a2ce51a0 | 2005 | |
ed2dc618 SM |
2006 | static struct dwp_file *get_dwp_file |
2007 | (struct dwarf2_per_objfile *dwarf2_per_objfile); | |
a2ce51a0 | 2008 | |
3019eac3 | 2009 | static struct dwo_unit *lookup_dwo_comp_unit |
a1855c1d | 2010 | (struct dwarf2_per_cu_data *, const char *, const char *, ULONGEST); |
3019eac3 DE |
2011 | |
2012 | static struct dwo_unit *lookup_dwo_type_unit | |
a1855c1d | 2013 | (struct signatured_type *, const char *, const char *); |
3019eac3 | 2014 | |
89e63ee4 DE |
2015 | static void queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *); |
2016 | ||
263db9a1 | 2017 | static void free_dwo_file (struct dwo_file *); |
3019eac3 | 2018 | |
263db9a1 TT |
2019 | /* A unique_ptr helper to free a dwo_file. */ |
2020 | ||
2021 | struct dwo_file_deleter | |
ed2dc618 | 2022 | { |
263db9a1 TT |
2023 | void operator() (struct dwo_file *df) const |
2024 | { | |
2025 | free_dwo_file (df); | |
2026 | } | |
ed2dc618 SM |
2027 | }; |
2028 | ||
263db9a1 TT |
2029 | /* A unique pointer to a dwo_file. */ |
2030 | ||
2031 | typedef std::unique_ptr<struct dwo_file, dwo_file_deleter> dwo_file_up; | |
2032 | ||
ed2dc618 | 2033 | static void process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile); |
95554aad | 2034 | |
1b80a9fa | 2035 | static void check_producer (struct dwarf2_cu *cu); |
527f3840 JK |
2036 | |
2037 | static void free_line_header_voidp (void *arg); | |
4390d890 DE |
2038 | \f |
2039 | /* Various complaints about symbol reading that don't abort the process. */ | |
2040 | ||
2041 | static void | |
2042 | dwarf2_statement_list_fits_in_line_number_section_complaint (void) | |
2043 | { | |
b98664d3 | 2044 | complaint (_("statement list doesn't fit in .debug_line section")); |
4390d890 DE |
2045 | } |
2046 | ||
2047 | static void | |
2048 | dwarf2_debug_line_missing_file_complaint (void) | |
2049 | { | |
b98664d3 | 2050 | complaint (_(".debug_line section has line data without a file")); |
4390d890 DE |
2051 | } |
2052 | ||
2053 | static void | |
2054 | dwarf2_debug_line_missing_end_sequence_complaint (void) | |
2055 | { | |
b98664d3 | 2056 | complaint (_(".debug_line section has line " |
4390d890 DE |
2057 | "program sequence without an end")); |
2058 | } | |
2059 | ||
2060 | static void | |
2061 | dwarf2_complex_location_expr_complaint (void) | |
2062 | { | |
b98664d3 | 2063 | complaint (_("location expression too complex")); |
4390d890 DE |
2064 | } |
2065 | ||
2066 | static void | |
2067 | dwarf2_const_value_length_mismatch_complaint (const char *arg1, int arg2, | |
2068 | int arg3) | |
2069 | { | |
b98664d3 | 2070 | complaint (_("const value length mismatch for '%s', got %d, expected %d"), |
4390d890 DE |
2071 | arg1, arg2, arg3); |
2072 | } | |
2073 | ||
2074 | static void | |
2075 | dwarf2_section_buffer_overflow_complaint (struct dwarf2_section_info *section) | |
2076 | { | |
b98664d3 | 2077 | complaint (_("debug info runs off end of %s section" |
4390d890 | 2078 | " [in module %s]"), |
a32a8923 DE |
2079 | get_section_name (section), |
2080 | get_section_file_name (section)); | |
4390d890 | 2081 | } |
1b80a9fa | 2082 | |
4390d890 DE |
2083 | static void |
2084 | dwarf2_macro_malformed_definition_complaint (const char *arg1) | |
2085 | { | |
b98664d3 | 2086 | complaint (_("macro debug info contains a " |
4390d890 DE |
2087 | "malformed macro definition:\n`%s'"), |
2088 | arg1); | |
2089 | } | |
2090 | ||
2091 | static void | |
2092 | dwarf2_invalid_attrib_class_complaint (const char *arg1, const char *arg2) | |
2093 | { | |
b98664d3 | 2094 | complaint (_("invalid attribute class or form for '%s' in '%s'"), |
4390d890 DE |
2095 | arg1, arg2); |
2096 | } | |
527f3840 JK |
2097 | |
2098 | /* Hash function for line_header_hash. */ | |
2099 | ||
2100 | static hashval_t | |
2101 | line_header_hash (const struct line_header *ofs) | |
2102 | { | |
9c541725 | 2103 | return to_underlying (ofs->sect_off) ^ ofs->offset_in_dwz; |
527f3840 JK |
2104 | } |
2105 | ||
2106 | /* Hash function for htab_create_alloc_ex for line_header_hash. */ | |
2107 | ||
2108 | static hashval_t | |
2109 | line_header_hash_voidp (const void *item) | |
2110 | { | |
9a3c8263 | 2111 | const struct line_header *ofs = (const struct line_header *) item; |
527f3840 JK |
2112 | |
2113 | return line_header_hash (ofs); | |
2114 | } | |
2115 | ||
2116 | /* Equality function for line_header_hash. */ | |
2117 | ||
2118 | static int | |
2119 | line_header_eq_voidp (const void *item_lhs, const void *item_rhs) | |
2120 | { | |
9a3c8263 SM |
2121 | const struct line_header *ofs_lhs = (const struct line_header *) item_lhs; |
2122 | const struct line_header *ofs_rhs = (const struct line_header *) item_rhs; | |
527f3840 | 2123 | |
9c541725 | 2124 | return (ofs_lhs->sect_off == ofs_rhs->sect_off |
527f3840 JK |
2125 | && ofs_lhs->offset_in_dwz == ofs_rhs->offset_in_dwz); |
2126 | } | |
2127 | ||
4390d890 | 2128 | \f |
9291a0cd | 2129 | |
31aa7e4e JB |
2130 | /* Read the given attribute value as an address, taking the attribute's |
2131 | form into account. */ | |
2132 | ||
2133 | static CORE_ADDR | |
2134 | attr_value_as_address (struct attribute *attr) | |
2135 | { | |
2136 | CORE_ADDR addr; | |
2137 | ||
336d760d AT |
2138 | if (attr->form != DW_FORM_addr && attr->form != DW_FORM_addrx |
2139 | && attr->form != DW_FORM_GNU_addr_index) | |
31aa7e4e JB |
2140 | { |
2141 | /* Aside from a few clearly defined exceptions, attributes that | |
2142 | contain an address must always be in DW_FORM_addr form. | |
2143 | Unfortunately, some compilers happen to be violating this | |
2144 | requirement by encoding addresses using other forms, such | |
2145 | as DW_FORM_data4 for example. For those broken compilers, | |
2146 | we try to do our best, without any guarantee of success, | |
2147 | to interpret the address correctly. It would also be nice | |
2148 | to generate a complaint, but that would require us to maintain | |
2149 | a list of legitimate cases where a non-address form is allowed, | |
2150 | as well as update callers to pass in at least the CU's DWARF | |
2151 | version. This is more overhead than what we're willing to | |
2152 | expand for a pretty rare case. */ | |
2153 | addr = DW_UNSND (attr); | |
2154 | } | |
2155 | else | |
2156 | addr = DW_ADDR (attr); | |
2157 | ||
2158 | return addr; | |
2159 | } | |
2160 | ||
330cdd98 PA |
2161 | /* See declaration. */ |
2162 | ||
2163 | dwarf2_per_objfile::dwarf2_per_objfile (struct objfile *objfile_, | |
2164 | const dwarf2_debug_sections *names) | |
2165 | : objfile (objfile_) | |
2166 | { | |
2167 | if (names == NULL) | |
2168 | names = &dwarf2_elf_names; | |
2169 | ||
2170 | bfd *obfd = objfile->obfd; | |
2171 | ||
2172 | for (asection *sec = obfd->sections; sec != NULL; sec = sec->next) | |
2173 | locate_sections (obfd, sec, *names); | |
2174 | } | |
2175 | ||
fc8e7e75 SM |
2176 | static void free_dwo_files (htab_t dwo_files, struct objfile *objfile); |
2177 | ||
330cdd98 PA |
2178 | dwarf2_per_objfile::~dwarf2_per_objfile () |
2179 | { | |
2180 | /* Cached DIE trees use xmalloc and the comp_unit_obstack. */ | |
2181 | free_cached_comp_units (); | |
2182 | ||
2183 | if (quick_file_names_table) | |
2184 | htab_delete (quick_file_names_table); | |
2185 | ||
2186 | if (line_header_hash) | |
2187 | htab_delete (line_header_hash); | |
2188 | ||
b76e467d SM |
2189 | for (dwarf2_per_cu_data *per_cu : all_comp_units) |
2190 | VEC_free (dwarf2_per_cu_ptr, per_cu->imported_symtabs); | |
fc8e7e75 | 2191 | |
b2bdb8cf SM |
2192 | for (signatured_type *sig_type : all_type_units) |
2193 | VEC_free (dwarf2_per_cu_ptr, sig_type->per_cu.imported_symtabs); | |
fc8e7e75 SM |
2194 | |
2195 | VEC_free (dwarf2_section_info_def, types); | |
2196 | ||
2197 | if (dwo_files != NULL) | |
2198 | free_dwo_files (dwo_files, objfile); | |
fc8e7e75 | 2199 | |
330cdd98 PA |
2200 | /* Everything else should be on the objfile obstack. */ |
2201 | } | |
2202 | ||
2203 | /* See declaration. */ | |
2204 | ||
2205 | void | |
2206 | dwarf2_per_objfile::free_cached_comp_units () | |
2207 | { | |
2208 | dwarf2_per_cu_data *per_cu = read_in_chain; | |
2209 | dwarf2_per_cu_data **last_chain = &read_in_chain; | |
2210 | while (per_cu != NULL) | |
2211 | { | |
2212 | dwarf2_per_cu_data *next_cu = per_cu->cu->read_in_chain; | |
2213 | ||
fcd3b13d | 2214 | delete per_cu->cu; |
330cdd98 PA |
2215 | *last_chain = next_cu; |
2216 | per_cu = next_cu; | |
2217 | } | |
2218 | } | |
2219 | ||
11ed8cad TT |
2220 | /* A helper class that calls free_cached_comp_units on |
2221 | destruction. */ | |
2222 | ||
2223 | class free_cached_comp_units | |
2224 | { | |
2225 | public: | |
2226 | ||
2227 | explicit free_cached_comp_units (dwarf2_per_objfile *per_objfile) | |
2228 | : m_per_objfile (per_objfile) | |
2229 | { | |
2230 | } | |
2231 | ||
2232 | ~free_cached_comp_units () | |
2233 | { | |
2234 | m_per_objfile->free_cached_comp_units (); | |
2235 | } | |
2236 | ||
2237 | DISABLE_COPY_AND_ASSIGN (free_cached_comp_units); | |
2238 | ||
2239 | private: | |
2240 | ||
2241 | dwarf2_per_objfile *m_per_objfile; | |
2242 | }; | |
2243 | ||
c906108c | 2244 | /* Try to locate the sections we need for DWARF 2 debugging |
251d32d9 TG |
2245 | information and return true if we have enough to do something. |
2246 | NAMES points to the dwarf2 section names, or is NULL if the standard | |
2247 | ELF names are used. */ | |
c906108c SS |
2248 | |
2249 | int | |
251d32d9 TG |
2250 | dwarf2_has_info (struct objfile *objfile, |
2251 | const struct dwarf2_debug_sections *names) | |
c906108c | 2252 | { |
97cbe998 SDJ |
2253 | if (objfile->flags & OBJF_READNEVER) |
2254 | return 0; | |
2255 | ||
ed2dc618 SM |
2256 | struct dwarf2_per_objfile *dwarf2_per_objfile |
2257 | = get_dwarf2_per_objfile (objfile); | |
2258 | ||
2259 | if (dwarf2_per_objfile == NULL) | |
5bfd760d TT |
2260 | dwarf2_per_objfile = dwarf2_objfile_data_key.emplace (objfile, objfile, |
2261 | names); | |
2262 | ||
73869dc2 | 2263 | return (!dwarf2_per_objfile->info.is_virtual |
049412e3 | 2264 | && dwarf2_per_objfile->info.s.section != NULL |
73869dc2 | 2265 | && !dwarf2_per_objfile->abbrev.is_virtual |
049412e3 | 2266 | && dwarf2_per_objfile->abbrev.s.section != NULL); |
73869dc2 DE |
2267 | } |
2268 | ||
2269 | /* Return the containing section of virtual section SECTION. */ | |
2270 | ||
2271 | static struct dwarf2_section_info * | |
2272 | get_containing_section (const struct dwarf2_section_info *section) | |
2273 | { | |
2274 | gdb_assert (section->is_virtual); | |
2275 | return section->s.containing_section; | |
c906108c SS |
2276 | } |
2277 | ||
a32a8923 DE |
2278 | /* Return the bfd owner of SECTION. */ |
2279 | ||
2280 | static struct bfd * | |
2281 | get_section_bfd_owner (const struct dwarf2_section_info *section) | |
2282 | { | |
73869dc2 DE |
2283 | if (section->is_virtual) |
2284 | { | |
2285 | section = get_containing_section (section); | |
2286 | gdb_assert (!section->is_virtual); | |
2287 | } | |
049412e3 | 2288 | return section->s.section->owner; |
a32a8923 DE |
2289 | } |
2290 | ||
2291 | /* Return the bfd section of SECTION. | |
2292 | Returns NULL if the section is not present. */ | |
2293 | ||
2294 | static asection * | |
2295 | get_section_bfd_section (const struct dwarf2_section_info *section) | |
2296 | { | |
73869dc2 DE |
2297 | if (section->is_virtual) |
2298 | { | |
2299 | section = get_containing_section (section); | |
2300 | gdb_assert (!section->is_virtual); | |
2301 | } | |
049412e3 | 2302 | return section->s.section; |
a32a8923 DE |
2303 | } |
2304 | ||
2305 | /* Return the name of SECTION. */ | |
2306 | ||
2307 | static const char * | |
2308 | get_section_name (const struct dwarf2_section_info *section) | |
2309 | { | |
2310 | asection *sectp = get_section_bfd_section (section); | |
2311 | ||
2312 | gdb_assert (sectp != NULL); | |
2313 | return bfd_section_name (get_section_bfd_owner (section), sectp); | |
2314 | } | |
2315 | ||
2316 | /* Return the name of the file SECTION is in. */ | |
2317 | ||
2318 | static const char * | |
2319 | get_section_file_name (const struct dwarf2_section_info *section) | |
2320 | { | |
2321 | bfd *abfd = get_section_bfd_owner (section); | |
2322 | ||
2323 | return bfd_get_filename (abfd); | |
2324 | } | |
2325 | ||
2326 | /* Return the id of SECTION. | |
2327 | Returns 0 if SECTION doesn't exist. */ | |
2328 | ||
2329 | static int | |
2330 | get_section_id (const struct dwarf2_section_info *section) | |
2331 | { | |
2332 | asection *sectp = get_section_bfd_section (section); | |
2333 | ||
2334 | if (sectp == NULL) | |
2335 | return 0; | |
2336 | return sectp->id; | |
2337 | } | |
2338 | ||
2339 | /* Return the flags of SECTION. | |
73869dc2 | 2340 | SECTION (or containing section if this is a virtual section) must exist. */ |
a32a8923 DE |
2341 | |
2342 | static int | |
2343 | get_section_flags (const struct dwarf2_section_info *section) | |
2344 | { | |
2345 | asection *sectp = get_section_bfd_section (section); | |
2346 | ||
2347 | gdb_assert (sectp != NULL); | |
2348 | return bfd_get_section_flags (sectp->owner, sectp); | |
2349 | } | |
2350 | ||
251d32d9 TG |
2351 | /* When loading sections, we look either for uncompressed section or for |
2352 | compressed section names. */ | |
233a11ab CS |
2353 | |
2354 | static int | |
251d32d9 TG |
2355 | section_is_p (const char *section_name, |
2356 | const struct dwarf2_section_names *names) | |
233a11ab | 2357 | { |
251d32d9 TG |
2358 | if (names->normal != NULL |
2359 | && strcmp (section_name, names->normal) == 0) | |
2360 | return 1; | |
2361 | if (names->compressed != NULL | |
2362 | && strcmp (section_name, names->compressed) == 0) | |
2363 | return 1; | |
2364 | return 0; | |
233a11ab CS |
2365 | } |
2366 | ||
330cdd98 | 2367 | /* See declaration. */ |
c906108c | 2368 | |
330cdd98 PA |
2369 | void |
2370 | dwarf2_per_objfile::locate_sections (bfd *abfd, asection *sectp, | |
2371 | const dwarf2_debug_sections &names) | |
c906108c | 2372 | { |
dc7650b8 | 2373 | flagword aflag = bfd_get_section_flags (abfd, sectp); |
251d32d9 | 2374 | |
dc7650b8 JK |
2375 | if ((aflag & SEC_HAS_CONTENTS) == 0) |
2376 | { | |
2377 | } | |
330cdd98 | 2378 | else if (section_is_p (sectp->name, &names.info)) |
c906108c | 2379 | { |
330cdd98 PA |
2380 | this->info.s.section = sectp; |
2381 | this->info.size = bfd_get_section_size (sectp); | |
c906108c | 2382 | } |
330cdd98 | 2383 | else if (section_is_p (sectp->name, &names.abbrev)) |
c906108c | 2384 | { |
330cdd98 PA |
2385 | this->abbrev.s.section = sectp; |
2386 | this->abbrev.size = bfd_get_section_size (sectp); | |
c906108c | 2387 | } |
330cdd98 | 2388 | else if (section_is_p (sectp->name, &names.line)) |
c906108c | 2389 | { |
330cdd98 PA |
2390 | this->line.s.section = sectp; |
2391 | this->line.size = bfd_get_section_size (sectp); | |
c906108c | 2392 | } |
330cdd98 | 2393 | else if (section_is_p (sectp->name, &names.loc)) |
c906108c | 2394 | { |
330cdd98 PA |
2395 | this->loc.s.section = sectp; |
2396 | this->loc.size = bfd_get_section_size (sectp); | |
c906108c | 2397 | } |
330cdd98 | 2398 | else if (section_is_p (sectp->name, &names.loclists)) |
43988095 | 2399 | { |
330cdd98 PA |
2400 | this->loclists.s.section = sectp; |
2401 | this->loclists.size = bfd_get_section_size (sectp); | |
43988095 | 2402 | } |
330cdd98 | 2403 | else if (section_is_p (sectp->name, &names.macinfo)) |
c906108c | 2404 | { |
330cdd98 PA |
2405 | this->macinfo.s.section = sectp; |
2406 | this->macinfo.size = bfd_get_section_size (sectp); | |
c906108c | 2407 | } |
330cdd98 | 2408 | else if (section_is_p (sectp->name, &names.macro)) |
cf2c3c16 | 2409 | { |
330cdd98 PA |
2410 | this->macro.s.section = sectp; |
2411 | this->macro.size = bfd_get_section_size (sectp); | |
cf2c3c16 | 2412 | } |
330cdd98 | 2413 | else if (section_is_p (sectp->name, &names.str)) |
c906108c | 2414 | { |
330cdd98 PA |
2415 | this->str.s.section = sectp; |
2416 | this->str.size = bfd_get_section_size (sectp); | |
c906108c | 2417 | } |
330cdd98 | 2418 | else if (section_is_p (sectp->name, &names.line_str)) |
43988095 | 2419 | { |
330cdd98 PA |
2420 | this->line_str.s.section = sectp; |
2421 | this->line_str.size = bfd_get_section_size (sectp); | |
43988095 | 2422 | } |
330cdd98 | 2423 | else if (section_is_p (sectp->name, &names.addr)) |
3019eac3 | 2424 | { |
330cdd98 PA |
2425 | this->addr.s.section = sectp; |
2426 | this->addr.size = bfd_get_section_size (sectp); | |
3019eac3 | 2427 | } |
330cdd98 | 2428 | else if (section_is_p (sectp->name, &names.frame)) |
b6af0555 | 2429 | { |
330cdd98 PA |
2430 | this->frame.s.section = sectp; |
2431 | this->frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2432 | } |
330cdd98 | 2433 | else if (section_is_p (sectp->name, &names.eh_frame)) |
b6af0555 | 2434 | { |
330cdd98 PA |
2435 | this->eh_frame.s.section = sectp; |
2436 | this->eh_frame.size = bfd_get_section_size (sectp); | |
b6af0555 | 2437 | } |
330cdd98 | 2438 | else if (section_is_p (sectp->name, &names.ranges)) |
af34e669 | 2439 | { |
330cdd98 PA |
2440 | this->ranges.s.section = sectp; |
2441 | this->ranges.size = bfd_get_section_size (sectp); | |
af34e669 | 2442 | } |
330cdd98 | 2443 | else if (section_is_p (sectp->name, &names.rnglists)) |
43988095 | 2444 | { |
330cdd98 PA |
2445 | this->rnglists.s.section = sectp; |
2446 | this->rnglists.size = bfd_get_section_size (sectp); | |
43988095 | 2447 | } |
330cdd98 | 2448 | else if (section_is_p (sectp->name, &names.types)) |
348e048f | 2449 | { |
8b70b953 TT |
2450 | struct dwarf2_section_info type_section; |
2451 | ||
2452 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 2453 | type_section.s.section = sectp; |
8b70b953 TT |
2454 | type_section.size = bfd_get_section_size (sectp); |
2455 | ||
330cdd98 | 2456 | VEC_safe_push (dwarf2_section_info_def, this->types, |
8b70b953 | 2457 | &type_section); |
348e048f | 2458 | } |
330cdd98 | 2459 | else if (section_is_p (sectp->name, &names.gdb_index)) |
9291a0cd | 2460 | { |
330cdd98 PA |
2461 | this->gdb_index.s.section = sectp; |
2462 | this->gdb_index.size = bfd_get_section_size (sectp); | |
9291a0cd | 2463 | } |
927aa2e7 JK |
2464 | else if (section_is_p (sectp->name, &names.debug_names)) |
2465 | { | |
2466 | this->debug_names.s.section = sectp; | |
2467 | this->debug_names.size = bfd_get_section_size (sectp); | |
2468 | } | |
2469 | else if (section_is_p (sectp->name, &names.debug_aranges)) | |
2470 | { | |
2471 | this->debug_aranges.s.section = sectp; | |
2472 | this->debug_aranges.size = bfd_get_section_size (sectp); | |
2473 | } | |
dce234bc | 2474 | |
b4e1fd61 | 2475 | if ((bfd_get_section_flags (abfd, sectp) & (SEC_LOAD | SEC_ALLOC)) |
72dca2f5 | 2476 | && bfd_section_vma (abfd, sectp) == 0) |
330cdd98 | 2477 | this->has_section_at_zero = true; |
c906108c SS |
2478 | } |
2479 | ||
fceca515 DE |
2480 | /* A helper function that decides whether a section is empty, |
2481 | or not present. */ | |
9e0ac564 TT |
2482 | |
2483 | static int | |
19ac8c2e | 2484 | dwarf2_section_empty_p (const struct dwarf2_section_info *section) |
9e0ac564 | 2485 | { |
73869dc2 DE |
2486 | if (section->is_virtual) |
2487 | return section->size == 0; | |
049412e3 | 2488 | return section->s.section == NULL || section->size == 0; |
9e0ac564 TT |
2489 | } |
2490 | ||
cd4fb1b2 | 2491 | /* See dwarf2read.h. */ |
c906108c | 2492 | |
cd4fb1b2 SM |
2493 | void |
2494 | dwarf2_read_section (struct objfile *objfile, dwarf2_section_info *info) | |
c906108c | 2495 | { |
a32a8923 | 2496 | asection *sectp; |
3019eac3 | 2497 | bfd *abfd; |
dce234bc | 2498 | gdb_byte *buf, *retbuf; |
c906108c | 2499 | |
be391dca TT |
2500 | if (info->readin) |
2501 | return; | |
dce234bc | 2502 | info->buffer = NULL; |
be391dca | 2503 | info->readin = 1; |
188dd5d6 | 2504 | |
9e0ac564 | 2505 | if (dwarf2_section_empty_p (info)) |
dce234bc | 2506 | return; |
c906108c | 2507 | |
a32a8923 | 2508 | sectp = get_section_bfd_section (info); |
3019eac3 | 2509 | |
73869dc2 DE |
2510 | /* If this is a virtual section we need to read in the real one first. */ |
2511 | if (info->is_virtual) | |
2512 | { | |
2513 | struct dwarf2_section_info *containing_section = | |
2514 | get_containing_section (info); | |
2515 | ||
2516 | gdb_assert (sectp != NULL); | |
2517 | if ((sectp->flags & SEC_RELOC) != 0) | |
2518 | { | |
2519 | error (_("Dwarf Error: DWP format V2 with relocations is not" | |
2520 | " supported in section %s [in module %s]"), | |
2521 | get_section_name (info), get_section_file_name (info)); | |
2522 | } | |
2523 | dwarf2_read_section (objfile, containing_section); | |
2524 | /* Other code should have already caught virtual sections that don't | |
2525 | fit. */ | |
2526 | gdb_assert (info->virtual_offset + info->size | |
2527 | <= containing_section->size); | |
2528 | /* If the real section is empty or there was a problem reading the | |
2529 | section we shouldn't get here. */ | |
2530 | gdb_assert (containing_section->buffer != NULL); | |
2531 | info->buffer = containing_section->buffer + info->virtual_offset; | |
2532 | return; | |
2533 | } | |
2534 | ||
4bf44c1c TT |
2535 | /* If the section has relocations, we must read it ourselves. |
2536 | Otherwise we attach it to the BFD. */ | |
2537 | if ((sectp->flags & SEC_RELOC) == 0) | |
dce234bc | 2538 | { |
d521ce57 | 2539 | info->buffer = gdb_bfd_map_section (sectp, &info->size); |
4bf44c1c | 2540 | return; |
dce234bc | 2541 | } |
dce234bc | 2542 | |
224c3ddb | 2543 | buf = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, info->size); |
4bf44c1c | 2544 | info->buffer = buf; |
dce234bc PP |
2545 | |
2546 | /* When debugging .o files, we may need to apply relocations; see | |
2547 | http://sourceware.org/ml/gdb-patches/2002-04/msg00136.html . | |
2548 | We never compress sections in .o files, so we only need to | |
2549 | try this when the section is not compressed. */ | |
ac8035ab | 2550 | retbuf = symfile_relocate_debug_section (objfile, sectp, buf); |
dce234bc PP |
2551 | if (retbuf != NULL) |
2552 | { | |
2553 | info->buffer = retbuf; | |
2554 | return; | |
2555 | } | |
2556 | ||
a32a8923 DE |
2557 | abfd = get_section_bfd_owner (info); |
2558 | gdb_assert (abfd != NULL); | |
2559 | ||
dce234bc PP |
2560 | if (bfd_seek (abfd, sectp->filepos, SEEK_SET) != 0 |
2561 | || bfd_bread (buf, info->size, abfd) != info->size) | |
19ac8c2e DE |
2562 | { |
2563 | error (_("Dwarf Error: Can't read DWARF data" | |
2564 | " in section %s [in module %s]"), | |
2565 | bfd_section_name (abfd, sectp), bfd_get_filename (abfd)); | |
2566 | } | |
dce234bc PP |
2567 | } |
2568 | ||
9e0ac564 TT |
2569 | /* A helper function that returns the size of a section in a safe way. |
2570 | If you are positive that the section has been read before using the | |
2571 | size, then it is safe to refer to the dwarf2_section_info object's | |
2572 | "size" field directly. In other cases, you must call this | |
2573 | function, because for compressed sections the size field is not set | |
2574 | correctly until the section has been read. */ | |
2575 | ||
2576 | static bfd_size_type | |
2577 | dwarf2_section_size (struct objfile *objfile, | |
2578 | struct dwarf2_section_info *info) | |
2579 | { | |
2580 | if (!info->readin) | |
2581 | dwarf2_read_section (objfile, info); | |
2582 | return info->size; | |
2583 | } | |
2584 | ||
dce234bc | 2585 | /* Fill in SECTP, BUFP and SIZEP with section info, given OBJFILE and |
0963b4bd | 2586 | SECTION_NAME. */ |
af34e669 | 2587 | |
dce234bc | 2588 | void |
3017a003 TG |
2589 | dwarf2_get_section_info (struct objfile *objfile, |
2590 | enum dwarf2_section_enum sect, | |
d521ce57 | 2591 | asection **sectp, const gdb_byte **bufp, |
dce234bc PP |
2592 | bfd_size_type *sizep) |
2593 | { | |
5bfd760d | 2594 | struct dwarf2_per_objfile *data = dwarf2_objfile_data_key.get (objfile); |
dce234bc | 2595 | struct dwarf2_section_info *info; |
a3b2a86b TT |
2596 | |
2597 | /* We may see an objfile without any DWARF, in which case we just | |
2598 | return nothing. */ | |
2599 | if (data == NULL) | |
2600 | { | |
2601 | *sectp = NULL; | |
2602 | *bufp = NULL; | |
2603 | *sizep = 0; | |
2604 | return; | |
2605 | } | |
3017a003 TG |
2606 | switch (sect) |
2607 | { | |
2608 | case DWARF2_DEBUG_FRAME: | |
2609 | info = &data->frame; | |
2610 | break; | |
2611 | case DWARF2_EH_FRAME: | |
2612 | info = &data->eh_frame; | |
2613 | break; | |
2614 | default: | |
2615 | gdb_assert_not_reached ("unexpected section"); | |
2616 | } | |
dce234bc | 2617 | |
9e0ac564 | 2618 | dwarf2_read_section (objfile, info); |
dce234bc | 2619 | |
a32a8923 | 2620 | *sectp = get_section_bfd_section (info); |
dce234bc PP |
2621 | *bufp = info->buffer; |
2622 | *sizep = info->size; | |
2623 | } | |
2624 | ||
36586728 TT |
2625 | /* A helper function to find the sections for a .dwz file. */ |
2626 | ||
2627 | static void | |
2628 | locate_dwz_sections (bfd *abfd, asection *sectp, void *arg) | |
2629 | { | |
9a3c8263 | 2630 | struct dwz_file *dwz_file = (struct dwz_file *) arg; |
36586728 TT |
2631 | |
2632 | /* Note that we only support the standard ELF names, because .dwz | |
2633 | is ELF-only (at the time of writing). */ | |
2634 | if (section_is_p (sectp->name, &dwarf2_elf_names.abbrev)) | |
2635 | { | |
049412e3 | 2636 | dwz_file->abbrev.s.section = sectp; |
36586728 TT |
2637 | dwz_file->abbrev.size = bfd_get_section_size (sectp); |
2638 | } | |
2639 | else if (section_is_p (sectp->name, &dwarf2_elf_names.info)) | |
2640 | { | |
049412e3 | 2641 | dwz_file->info.s.section = sectp; |
36586728 TT |
2642 | dwz_file->info.size = bfd_get_section_size (sectp); |
2643 | } | |
2644 | else if (section_is_p (sectp->name, &dwarf2_elf_names.str)) | |
2645 | { | |
049412e3 | 2646 | dwz_file->str.s.section = sectp; |
36586728 TT |
2647 | dwz_file->str.size = bfd_get_section_size (sectp); |
2648 | } | |
2649 | else if (section_is_p (sectp->name, &dwarf2_elf_names.line)) | |
2650 | { | |
049412e3 | 2651 | dwz_file->line.s.section = sectp; |
36586728 TT |
2652 | dwz_file->line.size = bfd_get_section_size (sectp); |
2653 | } | |
2654 | else if (section_is_p (sectp->name, &dwarf2_elf_names.macro)) | |
2655 | { | |
049412e3 | 2656 | dwz_file->macro.s.section = sectp; |
36586728 TT |
2657 | dwz_file->macro.size = bfd_get_section_size (sectp); |
2658 | } | |
2ec9a5e0 TT |
2659 | else if (section_is_p (sectp->name, &dwarf2_elf_names.gdb_index)) |
2660 | { | |
049412e3 | 2661 | dwz_file->gdb_index.s.section = sectp; |
2ec9a5e0 TT |
2662 | dwz_file->gdb_index.size = bfd_get_section_size (sectp); |
2663 | } | |
927aa2e7 JK |
2664 | else if (section_is_p (sectp->name, &dwarf2_elf_names.debug_names)) |
2665 | { | |
2666 | dwz_file->debug_names.s.section = sectp; | |
2667 | dwz_file->debug_names.size = bfd_get_section_size (sectp); | |
2668 | } | |
36586728 TT |
2669 | } |
2670 | ||
4db1a1dc TT |
2671 | /* Open the separate '.dwz' debug file, if needed. Return NULL if |
2672 | there is no .gnu_debugaltlink section in the file. Error if there | |
2673 | is such a section but the file cannot be found. */ | |
36586728 TT |
2674 | |
2675 | static struct dwz_file * | |
ed2dc618 | 2676 | dwarf2_get_dwz_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 2677 | { |
36586728 | 2678 | const char *filename; |
acd13123 | 2679 | bfd_size_type buildid_len_arg; |
dc294be5 TT |
2680 | size_t buildid_len; |
2681 | bfd_byte *buildid; | |
36586728 TT |
2682 | |
2683 | if (dwarf2_per_objfile->dwz_file != NULL) | |
7ff8cb8c | 2684 | return dwarf2_per_objfile->dwz_file.get (); |
36586728 | 2685 | |
4db1a1dc | 2686 | bfd_set_error (bfd_error_no_error); |
791afaa2 TT |
2687 | gdb::unique_xmalloc_ptr<char> data |
2688 | (bfd_get_alt_debug_link_info (dwarf2_per_objfile->objfile->obfd, | |
2689 | &buildid_len_arg, &buildid)); | |
4db1a1dc TT |
2690 | if (data == NULL) |
2691 | { | |
2692 | if (bfd_get_error () == bfd_error_no_error) | |
2693 | return NULL; | |
2694 | error (_("could not read '.gnu_debugaltlink' section: %s"), | |
2695 | bfd_errmsg (bfd_get_error ())); | |
2696 | } | |
791afaa2 TT |
2697 | |
2698 | gdb::unique_xmalloc_ptr<bfd_byte> buildid_holder (buildid); | |
36586728 | 2699 | |
acd13123 TT |
2700 | buildid_len = (size_t) buildid_len_arg; |
2701 | ||
791afaa2 | 2702 | filename = data.get (); |
d721ba37 PA |
2703 | |
2704 | std::string abs_storage; | |
36586728 TT |
2705 | if (!IS_ABSOLUTE_PATH (filename)) |
2706 | { | |
14278e1f TT |
2707 | gdb::unique_xmalloc_ptr<char> abs |
2708 | = gdb_realpath (objfile_name (dwarf2_per_objfile->objfile)); | |
36586728 | 2709 | |
14278e1f | 2710 | abs_storage = ldirname (abs.get ()) + SLASH_STRING + filename; |
d721ba37 | 2711 | filename = abs_storage.c_str (); |
36586728 TT |
2712 | } |
2713 | ||
dc294be5 TT |
2714 | /* First try the file name given in the section. If that doesn't |
2715 | work, try to use the build-id instead. */ | |
192b62ce | 2716 | gdb_bfd_ref_ptr dwz_bfd (gdb_bfd_open (filename, gnutarget, -1)); |
dc294be5 | 2717 | if (dwz_bfd != NULL) |
36586728 | 2718 | { |
192b62ce | 2719 | if (!build_id_verify (dwz_bfd.get (), buildid_len, buildid)) |
0f58c9e8 | 2720 | dwz_bfd.reset (nullptr); |
36586728 TT |
2721 | } |
2722 | ||
dc294be5 TT |
2723 | if (dwz_bfd == NULL) |
2724 | dwz_bfd = build_id_to_debug_bfd (buildid_len, buildid); | |
2725 | ||
2726 | if (dwz_bfd == NULL) | |
2727 | error (_("could not find '.gnu_debugaltlink' file for %s"), | |
2728 | objfile_name (dwarf2_per_objfile->objfile)); | |
2729 | ||
7ff8cb8c TT |
2730 | std::unique_ptr<struct dwz_file> result |
2731 | (new struct dwz_file (std::move (dwz_bfd))); | |
36586728 | 2732 | |
7ff8cb8c TT |
2733 | bfd_map_over_sections (result->dwz_bfd.get (), locate_dwz_sections, |
2734 | result.get ()); | |
36586728 | 2735 | |
7ff8cb8c TT |
2736 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, |
2737 | result->dwz_bfd.get ()); | |
2738 | dwarf2_per_objfile->dwz_file = std::move (result); | |
2739 | return dwarf2_per_objfile->dwz_file.get (); | |
36586728 | 2740 | } |
9291a0cd | 2741 | \f |
7b9f3c50 DE |
2742 | /* DWARF quick_symbols_functions support. */ |
2743 | ||
2744 | /* TUs can share .debug_line entries, and there can be a lot more TUs than | |
2745 | unique line tables, so we maintain a separate table of all .debug_line | |
2746 | derived entries to support the sharing. | |
2747 | All the quick functions need is the list of file names. We discard the | |
2748 | line_header when we're done and don't need to record it here. */ | |
2749 | struct quick_file_names | |
2750 | { | |
094b34ac DE |
2751 | /* The data used to construct the hash key. */ |
2752 | struct stmt_list_hash hash; | |
7b9f3c50 DE |
2753 | |
2754 | /* The number of entries in file_names, real_names. */ | |
2755 | unsigned int num_file_names; | |
2756 | ||
2757 | /* The file names from the line table, after being run through | |
2758 | file_full_name. */ | |
2759 | const char **file_names; | |
2760 | ||
2761 | /* The file names from the line table after being run through | |
2762 | gdb_realpath. These are computed lazily. */ | |
2763 | const char **real_names; | |
2764 | }; | |
2765 | ||
2766 | /* When using the index (and thus not using psymtabs), each CU has an | |
2767 | object of this type. This is used to hold information needed by | |
2768 | the various "quick" methods. */ | |
2769 | struct dwarf2_per_cu_quick_data | |
2770 | { | |
2771 | /* The file table. This can be NULL if there was no file table | |
2772 | or it's currently not read in. | |
2773 | NOTE: This points into dwarf2_per_objfile->quick_file_names_table. */ | |
2774 | struct quick_file_names *file_names; | |
2775 | ||
2776 | /* The corresponding symbol table. This is NULL if symbols for this | |
2777 | CU have not yet been read. */ | |
43f3e411 | 2778 | struct compunit_symtab *compunit_symtab; |
7b9f3c50 DE |
2779 | |
2780 | /* A temporary mark bit used when iterating over all CUs in | |
2781 | expand_symtabs_matching. */ | |
2782 | unsigned int mark : 1; | |
2783 | ||
2784 | /* True if we've tried to read the file table and found there isn't one. | |
2785 | There will be no point in trying to read it again next time. */ | |
2786 | unsigned int no_file_data : 1; | |
2787 | }; | |
2788 | ||
094b34ac DE |
2789 | /* Utility hash function for a stmt_list_hash. */ |
2790 | ||
2791 | static hashval_t | |
2792 | hash_stmt_list_entry (const struct stmt_list_hash *stmt_list_hash) | |
2793 | { | |
2794 | hashval_t v = 0; | |
2795 | ||
2796 | if (stmt_list_hash->dwo_unit != NULL) | |
2797 | v += (uintptr_t) stmt_list_hash->dwo_unit->dwo_file; | |
9c541725 | 2798 | v += to_underlying (stmt_list_hash->line_sect_off); |
094b34ac DE |
2799 | return v; |
2800 | } | |
2801 | ||
2802 | /* Utility equality function for a stmt_list_hash. */ | |
2803 | ||
2804 | static int | |
2805 | eq_stmt_list_entry (const struct stmt_list_hash *lhs, | |
2806 | const struct stmt_list_hash *rhs) | |
2807 | { | |
2808 | if ((lhs->dwo_unit != NULL) != (rhs->dwo_unit != NULL)) | |
2809 | return 0; | |
2810 | if (lhs->dwo_unit != NULL | |
2811 | && lhs->dwo_unit->dwo_file != rhs->dwo_unit->dwo_file) | |
2812 | return 0; | |
2813 | ||
9c541725 | 2814 | return lhs->line_sect_off == rhs->line_sect_off; |
094b34ac DE |
2815 | } |
2816 | ||
7b9f3c50 DE |
2817 | /* Hash function for a quick_file_names. */ |
2818 | ||
2819 | static hashval_t | |
2820 | hash_file_name_entry (const void *e) | |
2821 | { | |
9a3c8263 SM |
2822 | const struct quick_file_names *file_data |
2823 | = (const struct quick_file_names *) e; | |
7b9f3c50 | 2824 | |
094b34ac | 2825 | return hash_stmt_list_entry (&file_data->hash); |
7b9f3c50 DE |
2826 | } |
2827 | ||
2828 | /* Equality function for a quick_file_names. */ | |
2829 | ||
2830 | static int | |
2831 | eq_file_name_entry (const void *a, const void *b) | |
2832 | { | |
9a3c8263 SM |
2833 | const struct quick_file_names *ea = (const struct quick_file_names *) a; |
2834 | const struct quick_file_names *eb = (const struct quick_file_names *) b; | |
7b9f3c50 | 2835 | |
094b34ac | 2836 | return eq_stmt_list_entry (&ea->hash, &eb->hash); |
7b9f3c50 DE |
2837 | } |
2838 | ||
2839 | /* Delete function for a quick_file_names. */ | |
2840 | ||
2841 | static void | |
2842 | delete_file_name_entry (void *e) | |
2843 | { | |
9a3c8263 | 2844 | struct quick_file_names *file_data = (struct quick_file_names *) e; |
7b9f3c50 DE |
2845 | int i; |
2846 | ||
2847 | for (i = 0; i < file_data->num_file_names; ++i) | |
2848 | { | |
2849 | xfree ((void*) file_data->file_names[i]); | |
2850 | if (file_data->real_names) | |
2851 | xfree ((void*) file_data->real_names[i]); | |
2852 | } | |
2853 | ||
2854 | /* The space for the struct itself lives on objfile_obstack, | |
2855 | so we don't free it here. */ | |
2856 | } | |
2857 | ||
2858 | /* Create a quick_file_names hash table. */ | |
2859 | ||
2860 | static htab_t | |
2861 | create_quick_file_names_table (unsigned int nr_initial_entries) | |
2862 | { | |
2863 | return htab_create_alloc (nr_initial_entries, | |
2864 | hash_file_name_entry, eq_file_name_entry, | |
2865 | delete_file_name_entry, xcalloc, xfree); | |
2866 | } | |
9291a0cd | 2867 | |
918dd910 JK |
2868 | /* Read in PER_CU->CU. This function is unrelated to symtabs, symtab would |
2869 | have to be created afterwards. You should call age_cached_comp_units after | |
2870 | processing PER_CU->CU. dw2_setup must have been already called. */ | |
2871 | ||
2872 | static void | |
58f0c718 | 2873 | load_cu (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
918dd910 | 2874 | { |
3019eac3 | 2875 | if (per_cu->is_debug_types) |
e5fe5e75 | 2876 | load_full_type_unit (per_cu); |
918dd910 | 2877 | else |
58f0c718 | 2878 | load_full_comp_unit (per_cu, skip_partial, language_minimal); |
918dd910 | 2879 | |
cc12ce38 DE |
2880 | if (per_cu->cu == NULL) |
2881 | return; /* Dummy CU. */ | |
2dc860c0 DE |
2882 | |
2883 | dwarf2_find_base_address (per_cu->cu->dies, per_cu->cu); | |
918dd910 JK |
2884 | } |
2885 | ||
a0f42c21 | 2886 | /* Read in the symbols for PER_CU. */ |
2fdf6df6 | 2887 | |
9291a0cd | 2888 | static void |
58f0c718 | 2889 | dw2_do_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2890 | { |
ed2dc618 | 2891 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
9291a0cd | 2892 | |
f4dc4d17 DE |
2893 | /* Skip type_unit_groups, reading the type units they contain |
2894 | is handled elsewhere. */ | |
2895 | if (IS_TYPE_UNIT_GROUP (per_cu)) | |
2896 | return; | |
2897 | ||
b303c6f6 AB |
2898 | /* The destructor of dwarf2_queue_guard frees any entries left on |
2899 | the queue. After this point we're guaranteed to leave this function | |
2900 | with the dwarf queue empty. */ | |
2901 | dwarf2_queue_guard q_guard; | |
9291a0cd | 2902 | |
95554aad | 2903 | if (dwarf2_per_objfile->using_index |
43f3e411 | 2904 | ? per_cu->v.quick->compunit_symtab == NULL |
95554aad TT |
2905 | : (per_cu->v.psymtab == NULL || !per_cu->v.psymtab->readin)) |
2906 | { | |
2907 | queue_comp_unit (per_cu, language_minimal); | |
58f0c718 | 2908 | load_cu (per_cu, skip_partial); |
89e63ee4 DE |
2909 | |
2910 | /* If we just loaded a CU from a DWO, and we're working with an index | |
2911 | that may badly handle TUs, load all the TUs in that DWO as well. | |
2912 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
2913 | if (!per_cu->is_debug_types | |
cc12ce38 | 2914 | && per_cu->cu != NULL |
89e63ee4 DE |
2915 | && per_cu->cu->dwo_unit != NULL |
2916 | && dwarf2_per_objfile->index_table != NULL | |
2917 | && dwarf2_per_objfile->index_table->version <= 7 | |
2918 | /* DWP files aren't supported yet. */ | |
ed2dc618 | 2919 | && get_dwp_file (dwarf2_per_objfile) == NULL) |
89e63ee4 | 2920 | queue_and_load_all_dwo_tus (per_cu); |
95554aad | 2921 | } |
9291a0cd | 2922 | |
ed2dc618 | 2923 | process_queue (dwarf2_per_objfile); |
9291a0cd TT |
2924 | |
2925 | /* Age the cache, releasing compilation units that have not | |
2926 | been used recently. */ | |
ed2dc618 | 2927 | age_cached_comp_units (dwarf2_per_objfile); |
9291a0cd TT |
2928 | } |
2929 | ||
2930 | /* Ensure that the symbols for PER_CU have been read in. OBJFILE is | |
2931 | the objfile from which this CU came. Returns the resulting symbol | |
2932 | table. */ | |
2fdf6df6 | 2933 | |
43f3e411 | 2934 | static struct compunit_symtab * |
58f0c718 | 2935 | dw2_instantiate_symtab (struct dwarf2_per_cu_data *per_cu, bool skip_partial) |
9291a0cd | 2936 | { |
ed2dc618 SM |
2937 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
2938 | ||
95554aad | 2939 | gdb_assert (dwarf2_per_objfile->using_index); |
43f3e411 | 2940 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd | 2941 | { |
11ed8cad | 2942 | free_cached_comp_units freer (dwarf2_per_objfile); |
c83dd867 | 2943 | scoped_restore decrementer = increment_reading_symtab (); |
58f0c718 | 2944 | dw2_do_instantiate_symtab (per_cu, skip_partial); |
ed2dc618 | 2945 | process_cu_includes (dwarf2_per_objfile); |
9291a0cd | 2946 | } |
f194fefb | 2947 | |
43f3e411 | 2948 | return per_cu->v.quick->compunit_symtab; |
9291a0cd TT |
2949 | } |
2950 | ||
ff4c9fec | 2951 | /* See declaration. */ |
f4dc4d17 | 2952 | |
ff4c9fec SM |
2953 | dwarf2_per_cu_data * |
2954 | dwarf2_per_objfile::get_cutu (int index) | |
2955 | { | |
b76e467d | 2956 | if (index >= this->all_comp_units.size ()) |
ff4c9fec | 2957 | { |
b76e467d | 2958 | index -= this->all_comp_units.size (); |
b2bdb8cf | 2959 | gdb_assert (index < this->all_type_units.size ()); |
ff4c9fec SM |
2960 | return &this->all_type_units[index]->per_cu; |
2961 | } | |
f4dc4d17 | 2962 | |
ff4c9fec SM |
2963 | return this->all_comp_units[index]; |
2964 | } | |
f4dc4d17 | 2965 | |
ff4c9fec | 2966 | /* See declaration. */ |
2fdf6df6 | 2967 | |
ff4c9fec SM |
2968 | dwarf2_per_cu_data * |
2969 | dwarf2_per_objfile::get_cu (int index) | |
1fd400ff | 2970 | { |
b76e467d | 2971 | gdb_assert (index >= 0 && index < this->all_comp_units.size ()); |
f4dc4d17 | 2972 | |
ff4c9fec | 2973 | return this->all_comp_units[index]; |
f4dc4d17 DE |
2974 | } |
2975 | ||
ff4c9fec | 2976 | /* See declaration. */ |
f4dc4d17 | 2977 | |
ff4c9fec SM |
2978 | signatured_type * |
2979 | dwarf2_per_objfile::get_tu (int index) | |
f4dc4d17 | 2980 | { |
b2bdb8cf | 2981 | gdb_assert (index >= 0 && index < this->all_type_units.size ()); |
f4dc4d17 | 2982 | |
ff4c9fec | 2983 | return this->all_type_units[index]; |
1fd400ff TT |
2984 | } |
2985 | ||
4b514bc8 JK |
2986 | /* Return a new dwarf2_per_cu_data allocated on OBJFILE's |
2987 | objfile_obstack, and constructed with the specified field | |
2988 | values. */ | |
2989 | ||
2990 | static dwarf2_per_cu_data * | |
ed2dc618 | 2991 | create_cu_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
4b514bc8 JK |
2992 | struct dwarf2_section_info *section, |
2993 | int is_dwz, | |
2994 | sect_offset sect_off, ULONGEST length) | |
2995 | { | |
ed2dc618 | 2996 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4b514bc8 JK |
2997 | dwarf2_per_cu_data *the_cu |
2998 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2999 | struct dwarf2_per_cu_data); | |
3000 | the_cu->sect_off = sect_off; | |
3001 | the_cu->length = length; | |
e3b94546 | 3002 | the_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
4b514bc8 JK |
3003 | the_cu->section = section; |
3004 | the_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3005 | struct dwarf2_per_cu_quick_data); | |
3006 | the_cu->is_dwz = is_dwz; | |
3007 | return the_cu; | |
3008 | } | |
3009 | ||
2ec9a5e0 TT |
3010 | /* A helper for create_cus_from_index that handles a given list of |
3011 | CUs. */ | |
2fdf6df6 | 3012 | |
74a0d9f6 | 3013 | static void |
12359b5e | 3014 | create_cus_from_index_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
3015 | const gdb_byte *cu_list, offset_type n_elements, |
3016 | struct dwarf2_section_info *section, | |
b76e467d | 3017 | int is_dwz) |
9291a0cd | 3018 | { |
12359b5e | 3019 | for (offset_type i = 0; i < n_elements; i += 2) |
9291a0cd | 3020 | { |
74a0d9f6 | 3021 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3022 | |
3023 | sect_offset sect_off | |
3024 | = (sect_offset) extract_unsigned_integer (cu_list, 8, BFD_ENDIAN_LITTLE); | |
3025 | ULONGEST length = extract_unsigned_integer (cu_list + 8, 8, BFD_ENDIAN_LITTLE); | |
9291a0cd TT |
3026 | cu_list += 2 * 8; |
3027 | ||
b76e467d | 3028 | dwarf2_per_cu_data *per_cu |
ed2dc618 SM |
3029 | = create_cu_from_index_list (dwarf2_per_objfile, section, is_dwz, |
3030 | sect_off, length); | |
b76e467d | 3031 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
9291a0cd | 3032 | } |
9291a0cd TT |
3033 | } |
3034 | ||
2ec9a5e0 | 3035 | /* Read the CU list from the mapped index, and use it to create all |
74a0d9f6 | 3036 | the CU objects for this objfile. */ |
2ec9a5e0 | 3037 | |
74a0d9f6 | 3038 | static void |
12359b5e | 3039 | create_cus_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
2ec9a5e0 TT |
3040 | const gdb_byte *cu_list, offset_type cu_list_elements, |
3041 | const gdb_byte *dwz_list, offset_type dwz_elements) | |
3042 | { | |
b76e467d SM |
3043 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
3044 | dwarf2_per_objfile->all_comp_units.reserve | |
3045 | ((cu_list_elements + dwz_elements) / 2); | |
2ec9a5e0 | 3046 | |
12359b5e | 3047 | create_cus_from_index_list (dwarf2_per_objfile, cu_list, cu_list_elements, |
b76e467d | 3048 | &dwarf2_per_objfile->info, 0); |
2ec9a5e0 TT |
3049 | |
3050 | if (dwz_elements == 0) | |
74a0d9f6 | 3051 | return; |
2ec9a5e0 | 3052 | |
12359b5e SM |
3053 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
3054 | create_cus_from_index_list (dwarf2_per_objfile, dwz_list, dwz_elements, | |
b76e467d | 3055 | &dwz->info, 1); |
2ec9a5e0 TT |
3056 | } |
3057 | ||
1fd400ff | 3058 | /* Create the signatured type hash table from the index. */ |
673bfd45 | 3059 | |
74a0d9f6 | 3060 | static void |
12359b5e SM |
3061 | create_signatured_type_table_from_index |
3062 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3063 | struct dwarf2_section_info *section, | |
3064 | const gdb_byte *bytes, | |
3065 | offset_type elements) | |
1fd400ff | 3066 | { |
12359b5e | 3067 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
1fd400ff | 3068 | |
b2bdb8cf SM |
3069 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3070 | dwarf2_per_objfile->all_type_units.reserve (elements / 3); | |
1fd400ff | 3071 | |
12359b5e | 3072 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); |
1fd400ff | 3073 | |
12359b5e | 3074 | for (offset_type i = 0; i < elements; i += 3) |
1fd400ff | 3075 | { |
52dc124a | 3076 | struct signatured_type *sig_type; |
9c541725 | 3077 | ULONGEST signature; |
1fd400ff | 3078 | void **slot; |
9c541725 | 3079 | cu_offset type_offset_in_tu; |
1fd400ff | 3080 | |
74a0d9f6 | 3081 | gdb_static_assert (sizeof (ULONGEST) >= 8); |
9c541725 PA |
3082 | sect_offset sect_off |
3083 | = (sect_offset) extract_unsigned_integer (bytes, 8, BFD_ENDIAN_LITTLE); | |
3084 | type_offset_in_tu | |
3085 | = (cu_offset) extract_unsigned_integer (bytes + 8, 8, | |
3086 | BFD_ENDIAN_LITTLE); | |
1fd400ff TT |
3087 | signature = extract_unsigned_integer (bytes + 16, 8, BFD_ENDIAN_LITTLE); |
3088 | bytes += 3 * 8; | |
3089 | ||
52dc124a | 3090 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
1fd400ff | 3091 | struct signatured_type); |
52dc124a | 3092 | sig_type->signature = signature; |
9c541725 | 3093 | sig_type->type_offset_in_tu = type_offset_in_tu; |
3019eac3 | 3094 | sig_type->per_cu.is_debug_types = 1; |
8a0459fd | 3095 | sig_type->per_cu.section = section; |
9c541725 | 3096 | sig_type->per_cu.sect_off = sect_off; |
e3b94546 | 3097 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
52dc124a | 3098 | sig_type->per_cu.v.quick |
1fd400ff TT |
3099 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
3100 | struct dwarf2_per_cu_quick_data); | |
3101 | ||
52dc124a DE |
3102 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); |
3103 | *slot = sig_type; | |
1fd400ff | 3104 | |
b2bdb8cf | 3105 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
1fd400ff TT |
3106 | } |
3107 | ||
673bfd45 | 3108 | dwarf2_per_objfile->signatured_types = sig_types_hash; |
1fd400ff TT |
3109 | } |
3110 | ||
927aa2e7 JK |
3111 | /* Create the signatured type hash table from .debug_names. */ |
3112 | ||
3113 | static void | |
3114 | create_signatured_type_table_from_debug_names | |
ed2dc618 | 3115 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3116 | const mapped_debug_names &map, |
3117 | struct dwarf2_section_info *section, | |
3118 | struct dwarf2_section_info *abbrev_section) | |
3119 | { | |
ed2dc618 SM |
3120 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3121 | ||
927aa2e7 JK |
3122 | dwarf2_read_section (objfile, section); |
3123 | dwarf2_read_section (objfile, abbrev_section); | |
3124 | ||
b2bdb8cf SM |
3125 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
3126 | dwarf2_per_objfile->all_type_units.reserve (map.tu_count); | |
927aa2e7 JK |
3127 | |
3128 | htab_t sig_types_hash = allocate_signatured_type_table (objfile); | |
3129 | ||
3130 | for (uint32_t i = 0; i < map.tu_count; ++i) | |
3131 | { | |
3132 | struct signatured_type *sig_type; | |
927aa2e7 | 3133 | void **slot; |
927aa2e7 JK |
3134 | |
3135 | sect_offset sect_off | |
3136 | = (sect_offset) (extract_unsigned_integer | |
3137 | (map.tu_table_reordered + i * map.offset_size, | |
3138 | map.offset_size, | |
3139 | map.dwarf5_byte_order)); | |
3140 | ||
3141 | comp_unit_head cu_header; | |
ed2dc618 SM |
3142 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
3143 | abbrev_section, | |
927aa2e7 JK |
3144 | section->buffer + to_underlying (sect_off), |
3145 | rcuh_kind::TYPE); | |
3146 | ||
3147 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3148 | struct signatured_type); | |
3149 | sig_type->signature = cu_header.signature; | |
3150 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
3151 | sig_type->per_cu.is_debug_types = 1; | |
3152 | sig_type->per_cu.section = section; | |
3153 | sig_type->per_cu.sect_off = sect_off; | |
e3b94546 | 3154 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
927aa2e7 JK |
3155 | sig_type->per_cu.v.quick |
3156 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
3157 | struct dwarf2_per_cu_quick_data); | |
3158 | ||
3159 | slot = htab_find_slot (sig_types_hash, sig_type, INSERT); | |
3160 | *slot = sig_type; | |
3161 | ||
b2bdb8cf | 3162 | dwarf2_per_objfile->all_type_units.push_back (sig_type); |
927aa2e7 JK |
3163 | } |
3164 | ||
3165 | dwarf2_per_objfile->signatured_types = sig_types_hash; | |
3166 | } | |
3167 | ||
9291a0cd TT |
3168 | /* Read the address map data from the mapped index, and use it to |
3169 | populate the objfile's psymtabs_addrmap. */ | |
2fdf6df6 | 3170 | |
9291a0cd | 3171 | static void |
ed2dc618 SM |
3172 | create_addrmap_from_index (struct dwarf2_per_objfile *dwarf2_per_objfile, |
3173 | struct mapped_index *index) | |
9291a0cd | 3174 | { |
ed2dc618 | 3175 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 3176 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9291a0cd | 3177 | const gdb_byte *iter, *end; |
9291a0cd | 3178 | struct addrmap *mutable_map; |
9291a0cd TT |
3179 | CORE_ADDR baseaddr; |
3180 | ||
8268c778 PA |
3181 | auto_obstack temp_obstack; |
3182 | ||
9291a0cd TT |
3183 | mutable_map = addrmap_create_mutable (&temp_obstack); |
3184 | ||
f00a2de2 PA |
3185 | iter = index->address_table.data (); |
3186 | end = iter + index->address_table.size (); | |
9291a0cd TT |
3187 | |
3188 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
3189 | ||
3190 | while (iter < end) | |
3191 | { | |
3192 | ULONGEST hi, lo, cu_index; | |
3193 | lo = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3194 | iter += 8; | |
3195 | hi = extract_unsigned_integer (iter, 8, BFD_ENDIAN_LITTLE); | |
3196 | iter += 8; | |
3197 | cu_index = extract_unsigned_integer (iter, 4, BFD_ENDIAN_LITTLE); | |
3198 | iter += 4; | |
f652bce2 | 3199 | |
24a55014 | 3200 | if (lo > hi) |
f652bce2 | 3201 | { |
b98664d3 | 3202 | complaint (_(".gdb_index address table has invalid range (%s - %s)"), |
c0cd8254 | 3203 | hex_string (lo), hex_string (hi)); |
24a55014 | 3204 | continue; |
f652bce2 | 3205 | } |
24a55014 | 3206 | |
b76e467d | 3207 | if (cu_index >= dwarf2_per_objfile->all_comp_units.size ()) |
f652bce2 | 3208 | { |
b98664d3 | 3209 | complaint (_(".gdb_index address table has invalid CU number %u"), |
f652bce2 | 3210 | (unsigned) cu_index); |
24a55014 | 3211 | continue; |
f652bce2 | 3212 | } |
24a55014 | 3213 | |
79748972 TT |
3214 | lo = gdbarch_adjust_dwarf2_addr (gdbarch, lo + baseaddr) - baseaddr; |
3215 | hi = gdbarch_adjust_dwarf2_addr (gdbarch, hi + baseaddr) - baseaddr; | |
ed2dc618 | 3216 | addrmap_set_empty (mutable_map, lo, hi - 1, |
ff4c9fec | 3217 | dwarf2_per_objfile->get_cu (cu_index)); |
9291a0cd TT |
3218 | } |
3219 | ||
d320c2b5 | 3220 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3221 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
9291a0cd TT |
3222 | } |
3223 | ||
927aa2e7 JK |
3224 | /* Read the address map data from DWARF-5 .debug_aranges, and use it to |
3225 | populate the objfile's psymtabs_addrmap. */ | |
3226 | ||
3227 | static void | |
ed2dc618 | 3228 | create_addrmap_from_aranges (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
3229 | struct dwarf2_section_info *section) |
3230 | { | |
ed2dc618 | 3231 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
927aa2e7 JK |
3232 | bfd *abfd = objfile->obfd; |
3233 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3234 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
3235 | SECT_OFF_TEXT (objfile)); | |
3236 | ||
3237 | auto_obstack temp_obstack; | |
3238 | addrmap *mutable_map = addrmap_create_mutable (&temp_obstack); | |
3239 | ||
3240 | std::unordered_map<sect_offset, | |
3241 | dwarf2_per_cu_data *, | |
3242 | gdb::hash_enum<sect_offset>> | |
3243 | debug_info_offset_to_per_cu; | |
b76e467d | 3244 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 3245 | { |
927aa2e7 JK |
3246 | const auto insertpair |
3247 | = debug_info_offset_to_per_cu.emplace (per_cu->sect_off, per_cu); | |
3248 | if (!insertpair.second) | |
3249 | { | |
3250 | warning (_("Section .debug_aranges in %s has duplicate " | |
9d8780f0 SM |
3251 | "debug_info_offset %s, ignoring .debug_aranges."), |
3252 | objfile_name (objfile), sect_offset_str (per_cu->sect_off)); | |
927aa2e7 JK |
3253 | return; |
3254 | } | |
3255 | } | |
3256 | ||
3257 | dwarf2_read_section (objfile, section); | |
3258 | ||
3259 | const bfd_endian dwarf5_byte_order = gdbarch_byte_order (gdbarch); | |
3260 | ||
3261 | const gdb_byte *addr = section->buffer; | |
3262 | ||
3263 | while (addr < section->buffer + section->size) | |
3264 | { | |
3265 | const gdb_byte *const entry_addr = addr; | |
3266 | unsigned int bytes_read; | |
3267 | ||
3268 | const LONGEST entry_length = read_initial_length (abfd, addr, | |
3269 | &bytes_read); | |
3270 | addr += bytes_read; | |
3271 | ||
3272 | const gdb_byte *const entry_end = addr + entry_length; | |
3273 | const bool dwarf5_is_dwarf64 = bytes_read != 4; | |
3274 | const uint8_t offset_size = dwarf5_is_dwarf64 ? 8 : 4; | |
3275 | if (addr + entry_length > section->buffer + section->size) | |
3276 | { | |
3277 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3278 | "length %s exceeds section length %s, " | |
3279 | "ignoring .debug_aranges."), | |
3280 | objfile_name (objfile), entry_addr - section->buffer, | |
3281 | plongest (bytes_read + entry_length), | |
3282 | pulongest (section->size)); | |
3283 | return; | |
3284 | } | |
3285 | ||
3286 | /* The version number. */ | |
3287 | const uint16_t version = read_2_bytes (abfd, addr); | |
3288 | addr += 2; | |
3289 | if (version != 2) | |
3290 | { | |
3291 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3292 | "has unsupported version %d, ignoring .debug_aranges."), | |
3293 | objfile_name (objfile), entry_addr - section->buffer, | |
3294 | version); | |
3295 | return; | |
3296 | } | |
3297 | ||
3298 | const uint64_t debug_info_offset | |
3299 | = extract_unsigned_integer (addr, offset_size, dwarf5_byte_order); | |
3300 | addr += offset_size; | |
3301 | const auto per_cu_it | |
3302 | = debug_info_offset_to_per_cu.find (sect_offset (debug_info_offset)); | |
3303 | if (per_cu_it == debug_info_offset_to_per_cu.cend ()) | |
3304 | { | |
3305 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3306 | "debug_info_offset %s does not exists, " | |
3307 | "ignoring .debug_aranges."), | |
3308 | objfile_name (objfile), entry_addr - section->buffer, | |
3309 | pulongest (debug_info_offset)); | |
3310 | return; | |
3311 | } | |
3312 | dwarf2_per_cu_data *const per_cu = per_cu_it->second; | |
3313 | ||
3314 | const uint8_t address_size = *addr++; | |
3315 | if (address_size < 1 || address_size > 8) | |
3316 | { | |
3317 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3318 | "address_size %u is invalid, ignoring .debug_aranges."), | |
3319 | objfile_name (objfile), entry_addr - section->buffer, | |
3320 | address_size); | |
3321 | return; | |
3322 | } | |
3323 | ||
3324 | const uint8_t segment_selector_size = *addr++; | |
3325 | if (segment_selector_size != 0) | |
3326 | { | |
3327 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3328 | "segment_selector_size %u is not supported, " | |
3329 | "ignoring .debug_aranges."), | |
3330 | objfile_name (objfile), entry_addr - section->buffer, | |
3331 | segment_selector_size); | |
3332 | return; | |
3333 | } | |
3334 | ||
3335 | /* Must pad to an alignment boundary that is twice the address | |
3336 | size. It is undocumented by the DWARF standard but GCC does | |
3337 | use it. */ | |
3338 | for (size_t padding = ((-(addr - section->buffer)) | |
3339 | & (2 * address_size - 1)); | |
3340 | padding > 0; padding--) | |
3341 | if (*addr++ != 0) | |
3342 | { | |
3343 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3344 | "padding is not zero, ignoring .debug_aranges."), | |
3345 | objfile_name (objfile), entry_addr - section->buffer); | |
3346 | return; | |
3347 | } | |
3348 | ||
3349 | for (;;) | |
3350 | { | |
3351 | if (addr + 2 * address_size > entry_end) | |
3352 | { | |
3353 | warning (_("Section .debug_aranges in %s entry at offset %zu " | |
3354 | "address list is not properly terminated, " | |
3355 | "ignoring .debug_aranges."), | |
3356 | objfile_name (objfile), entry_addr - section->buffer); | |
3357 | return; | |
3358 | } | |
3359 | ULONGEST start = extract_unsigned_integer (addr, address_size, | |
3360 | dwarf5_byte_order); | |
3361 | addr += address_size; | |
3362 | ULONGEST length = extract_unsigned_integer (addr, address_size, | |
3363 | dwarf5_byte_order); | |
3364 | addr += address_size; | |
3365 | if (start == 0 && length == 0) | |
3366 | break; | |
3367 | if (start == 0 && !dwarf2_per_objfile->has_section_at_zero) | |
3368 | { | |
3369 | /* Symbol was eliminated due to a COMDAT group. */ | |
3370 | continue; | |
3371 | } | |
3372 | ULONGEST end = start + length; | |
79748972 TT |
3373 | start = (gdbarch_adjust_dwarf2_addr (gdbarch, start + baseaddr) |
3374 | - baseaddr); | |
3375 | end = (gdbarch_adjust_dwarf2_addr (gdbarch, end + baseaddr) | |
3376 | - baseaddr); | |
927aa2e7 JK |
3377 | addrmap_set_empty (mutable_map, start, end - 1, per_cu); |
3378 | } | |
3379 | } | |
3380 | ||
d320c2b5 | 3381 | objfile->partial_symtabs->psymtabs_addrmap |
5923a04c | 3382 | = addrmap_create_fixed (mutable_map, objfile->partial_symtabs->obstack ()); |
927aa2e7 JK |
3383 | } |
3384 | ||
9291a0cd TT |
3385 | /* Find a slot in the mapped index INDEX for the object named NAME. |
3386 | If NAME is found, set *VEC_OUT to point to the CU vector in the | |
109483d9 PA |
3387 | constant pool and return true. If NAME cannot be found, return |
3388 | false. */ | |
2fdf6df6 | 3389 | |
109483d9 | 3390 | static bool |
9291a0cd TT |
3391 | find_slot_in_mapped_hash (struct mapped_index *index, const char *name, |
3392 | offset_type **vec_out) | |
3393 | { | |
0cf03b49 | 3394 | offset_type hash; |
9291a0cd | 3395 | offset_type slot, step; |
559a7a62 | 3396 | int (*cmp) (const char *, const char *); |
9291a0cd | 3397 | |
791afaa2 | 3398 | gdb::unique_xmalloc_ptr<char> without_params; |
0cf03b49 | 3399 | if (current_language->la_language == language_cplus |
45280282 IB |
3400 | || current_language->la_language == language_fortran |
3401 | || current_language->la_language == language_d) | |
0cf03b49 JK |
3402 | { |
3403 | /* NAME is already canonical. Drop any qualifiers as .gdb_index does | |
3404 | not contain any. */ | |
a8719064 | 3405 | |
72998fb3 | 3406 | if (strchr (name, '(') != NULL) |
0cf03b49 | 3407 | { |
109483d9 | 3408 | without_params = cp_remove_params (name); |
0cf03b49 | 3409 | |
72998fb3 | 3410 | if (without_params != NULL) |
791afaa2 | 3411 | name = without_params.get (); |
0cf03b49 JK |
3412 | } |
3413 | } | |
3414 | ||
559a7a62 | 3415 | /* Index version 4 did not support case insensitive searches. But the |
feea76c2 | 3416 | indices for case insensitive languages are built in lowercase, therefore |
559a7a62 JK |
3417 | simulate our NAME being searched is also lowercased. */ |
3418 | hash = mapped_index_string_hash ((index->version == 4 | |
3419 | && case_sensitivity == case_sensitive_off | |
3420 | ? 5 : index->version), | |
3421 | name); | |
3422 | ||
f00a2de2 PA |
3423 | slot = hash & (index->symbol_table.size () - 1); |
3424 | step = ((hash * 17) & (index->symbol_table.size () - 1)) | 1; | |
559a7a62 | 3425 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); |
9291a0cd TT |
3426 | |
3427 | for (;;) | |
3428 | { | |
9291a0cd | 3429 | const char *str; |
f00a2de2 PA |
3430 | |
3431 | const auto &bucket = index->symbol_table[slot]; | |
3432 | if (bucket.name == 0 && bucket.vec == 0) | |
109483d9 | 3433 | return false; |
9291a0cd | 3434 | |
f00a2de2 | 3435 | str = index->constant_pool + MAYBE_SWAP (bucket.name); |
559a7a62 | 3436 | if (!cmp (name, str)) |
9291a0cd TT |
3437 | { |
3438 | *vec_out = (offset_type *) (index->constant_pool | |
f00a2de2 | 3439 | + MAYBE_SWAP (bucket.vec)); |
109483d9 | 3440 | return true; |
9291a0cd TT |
3441 | } |
3442 | ||
f00a2de2 | 3443 | slot = (slot + step) & (index->symbol_table.size () - 1); |
9291a0cd TT |
3444 | } |
3445 | } | |
3446 | ||
4485a1c1 SM |
3447 | /* A helper function that reads the .gdb_index from BUFFER and fills |
3448 | in MAP. FILENAME is the name of the file containing the data; | |
d33bc52e | 3449 | it is used for error reporting. DEPRECATED_OK is true if it is |
2ec9a5e0 TT |
3450 | ok to use deprecated sections. |
3451 | ||
3452 | CU_LIST, CU_LIST_ELEMENTS, TYPES_LIST, and TYPES_LIST_ELEMENTS are | |
3453 | out parameters that are filled in with information about the CU and | |
3454 | TU lists in the section. | |
3455 | ||
4485a1c1 | 3456 | Returns true if all went well, false otherwise. */ |
2fdf6df6 | 3457 | |
d33bc52e | 3458 | static bool |
4485a1c1 SM |
3459 | read_gdb_index_from_buffer (struct objfile *objfile, |
3460 | const char *filename, | |
3461 | bool deprecated_ok, | |
3462 | gdb::array_view<const gdb_byte> buffer, | |
3463 | struct mapped_index *map, | |
3464 | const gdb_byte **cu_list, | |
3465 | offset_type *cu_list_elements, | |
3466 | const gdb_byte **types_list, | |
3467 | offset_type *types_list_elements) | |
3468 | { | |
3469 | const gdb_byte *addr = &buffer[0]; | |
82430852 | 3470 | |
9291a0cd | 3471 | /* Version check. */ |
4485a1c1 | 3472 | offset_type version = MAYBE_SWAP (*(offset_type *) addr); |
987d643c | 3473 | /* Versions earlier than 3 emitted every copy of a psymbol. This |
a6e293d1 | 3474 | causes the index to behave very poorly for certain requests. Version 3 |
831adc1f | 3475 | contained incomplete addrmap. So, it seems better to just ignore such |
481860b3 | 3476 | indices. */ |
831adc1f | 3477 | if (version < 4) |
481860b3 GB |
3478 | { |
3479 | static int warning_printed = 0; | |
3480 | if (!warning_printed) | |
3481 | { | |
3482 | warning (_("Skipping obsolete .gdb_index section in %s."), | |
2ec9a5e0 | 3483 | filename); |
481860b3 GB |
3484 | warning_printed = 1; |
3485 | } | |
3486 | return 0; | |
3487 | } | |
3488 | /* Index version 4 uses a different hash function than index version | |
3489 | 5 and later. | |
3490 | ||
3491 | Versions earlier than 6 did not emit psymbols for inlined | |
3492 | functions. Using these files will cause GDB not to be able to | |
3493 | set breakpoints on inlined functions by name, so we ignore these | |
e615022a DE |
3494 | indices unless the user has done |
3495 | "set use-deprecated-index-sections on". */ | |
2ec9a5e0 | 3496 | if (version < 6 && !deprecated_ok) |
481860b3 GB |
3497 | { |
3498 | static int warning_printed = 0; | |
3499 | if (!warning_printed) | |
3500 | { | |
e615022a DE |
3501 | warning (_("\ |
3502 | Skipping deprecated .gdb_index section in %s.\n\ | |
3503 | Do \"set use-deprecated-index-sections on\" before the file is read\n\ | |
3504 | to use the section anyway."), | |
2ec9a5e0 | 3505 | filename); |
481860b3 GB |
3506 | warning_printed = 1; |
3507 | } | |
3508 | return 0; | |
3509 | } | |
796a7ff8 | 3510 | /* Version 7 indices generated by gold refer to the CU for a symbol instead |
8943b874 DE |
3511 | of the TU (for symbols coming from TUs), |
3512 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. | |
3513 | Plus gold-generated indices can have duplicate entries for global symbols, | |
3514 | http://sourceware.org/bugzilla/show_bug.cgi?id=15646. | |
3515 | These are just performance bugs, and we can't distinguish gdb-generated | |
3516 | indices from gold-generated ones, so issue no warning here. */ | |
796a7ff8 | 3517 | |
481860b3 | 3518 | /* Indexes with higher version than the one supported by GDB may be no |
594e8718 | 3519 | longer backward compatible. */ |
796a7ff8 | 3520 | if (version > 8) |
594e8718 | 3521 | return 0; |
9291a0cd | 3522 | |
559a7a62 | 3523 | map->version = version; |
9291a0cd | 3524 | |
4485a1c1 | 3525 | offset_type *metadata = (offset_type *) (addr + sizeof (offset_type)); |
1fd400ff | 3526 | |
4485a1c1 | 3527 | int i = 0; |
2ec9a5e0 TT |
3528 | *cu_list = addr + MAYBE_SWAP (metadata[i]); |
3529 | *cu_list_elements = ((MAYBE_SWAP (metadata[i + 1]) - MAYBE_SWAP (metadata[i])) | |
3530 | / 8); | |
1fd400ff TT |
3531 | ++i; |
3532 | ||
2ec9a5e0 TT |
3533 | *types_list = addr + MAYBE_SWAP (metadata[i]); |
3534 | *types_list_elements = ((MAYBE_SWAP (metadata[i + 1]) | |
3535 | - MAYBE_SWAP (metadata[i])) | |
3536 | / 8); | |
987d643c | 3537 | ++i; |
1fd400ff | 3538 | |
f00a2de2 PA |
3539 | const gdb_byte *address_table = addr + MAYBE_SWAP (metadata[i]); |
3540 | const gdb_byte *address_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3541 | map->address_table | |
3542 | = gdb::array_view<const gdb_byte> (address_table, address_table_end); | |
1fd400ff TT |
3543 | ++i; |
3544 | ||
f00a2de2 PA |
3545 | const gdb_byte *symbol_table = addr + MAYBE_SWAP (metadata[i]); |
3546 | const gdb_byte *symbol_table_end = addr + MAYBE_SWAP (metadata[i + 1]); | |
3547 | map->symbol_table | |
3548 | = gdb::array_view<mapped_index::symbol_table_slot> | |
3549 | ((mapped_index::symbol_table_slot *) symbol_table, | |
3550 | (mapped_index::symbol_table_slot *) symbol_table_end); | |
9291a0cd | 3551 | |
f00a2de2 | 3552 | ++i; |
f9d83a0b | 3553 | map->constant_pool = (char *) (addr + MAYBE_SWAP (metadata[i])); |
1fd400ff | 3554 | |
2ec9a5e0 TT |
3555 | return 1; |
3556 | } | |
3557 | ||
4485a1c1 SM |
3558 | /* Callback types for dwarf2_read_gdb_index. */ |
3559 | ||
3560 | typedef gdb::function_view | |
3561 | <gdb::array_view<const gdb_byte>(objfile *, dwarf2_per_objfile *)> | |
3562 | get_gdb_index_contents_ftype; | |
3563 | typedef gdb::function_view | |
3564 | <gdb::array_view<const gdb_byte>(objfile *, dwz_file *)> | |
3565 | get_gdb_index_contents_dwz_ftype; | |
3566 | ||
927aa2e7 | 3567 | /* Read .gdb_index. If everything went ok, initialize the "quick" |
2ec9a5e0 TT |
3568 | elements of all the CUs and return 1. Otherwise, return 0. */ |
3569 | ||
3570 | static int | |
4485a1c1 SM |
3571 | dwarf2_read_gdb_index |
3572 | (struct dwarf2_per_objfile *dwarf2_per_objfile, | |
3573 | get_gdb_index_contents_ftype get_gdb_index_contents, | |
3574 | get_gdb_index_contents_dwz_ftype get_gdb_index_contents_dwz) | |
2ec9a5e0 | 3575 | { |
2ec9a5e0 TT |
3576 | const gdb_byte *cu_list, *types_list, *dwz_list = NULL; |
3577 | offset_type cu_list_elements, types_list_elements, dwz_list_elements = 0; | |
4db1a1dc | 3578 | struct dwz_file *dwz; |
12359b5e | 3579 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ec9a5e0 | 3580 | |
4485a1c1 SM |
3581 | gdb::array_view<const gdb_byte> main_index_contents |
3582 | = get_gdb_index_contents (objfile, dwarf2_per_objfile); | |
3583 | ||
3584 | if (main_index_contents.empty ()) | |
3585 | return 0; | |
3586 | ||
3063847f | 3587 | std::unique_ptr<struct mapped_index> map (new struct mapped_index); |
4485a1c1 SM |
3588 | if (!read_gdb_index_from_buffer (objfile, objfile_name (objfile), |
3589 | use_deprecated_index_sections, | |
3590 | main_index_contents, map.get (), &cu_list, | |
3591 | &cu_list_elements, &types_list, | |
3592 | &types_list_elements)) | |
2ec9a5e0 TT |
3593 | return 0; |
3594 | ||
0fefef59 | 3595 | /* Don't use the index if it's empty. */ |
3063847f | 3596 | if (map->symbol_table.empty ()) |
0fefef59 DE |
3597 | return 0; |
3598 | ||
2ec9a5e0 TT |
3599 | /* If there is a .dwz file, read it so we can get its CU list as |
3600 | well. */ | |
ed2dc618 | 3601 | dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 3602 | if (dwz != NULL) |
2ec9a5e0 | 3603 | { |
2ec9a5e0 TT |
3604 | struct mapped_index dwz_map; |
3605 | const gdb_byte *dwz_types_ignore; | |
3606 | offset_type dwz_types_elements_ignore; | |
3607 | ||
4485a1c1 SM |
3608 | gdb::array_view<const gdb_byte> dwz_index_content |
3609 | = get_gdb_index_contents_dwz (objfile, dwz); | |
3610 | ||
3611 | if (dwz_index_content.empty ()) | |
3612 | return 0; | |
3613 | ||
3614 | if (!read_gdb_index_from_buffer (objfile, | |
3615 | bfd_get_filename (dwz->dwz_bfd), 1, | |
3616 | dwz_index_content, &dwz_map, | |
3617 | &dwz_list, &dwz_list_elements, | |
3618 | &dwz_types_ignore, | |
3619 | &dwz_types_elements_ignore)) | |
2ec9a5e0 TT |
3620 | { |
3621 | warning (_("could not read '.gdb_index' section from %s; skipping"), | |
3622 | bfd_get_filename (dwz->dwz_bfd)); | |
3623 | return 0; | |
3624 | } | |
3625 | } | |
3626 | ||
12359b5e SM |
3627 | create_cus_from_index (dwarf2_per_objfile, cu_list, cu_list_elements, |
3628 | dwz_list, dwz_list_elements); | |
1fd400ff | 3629 | |
8b70b953 TT |
3630 | if (types_list_elements) |
3631 | { | |
3632 | struct dwarf2_section_info *section; | |
3633 | ||
3634 | /* We can only handle a single .debug_types when we have an | |
3635 | index. */ | |
3636 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
3637 | return 0; | |
3638 | ||
3639 | section = VEC_index (dwarf2_section_info_def, | |
3640 | dwarf2_per_objfile->types, 0); | |
3641 | ||
12359b5e SM |
3642 | create_signatured_type_table_from_index (dwarf2_per_objfile, section, |
3643 | types_list, types_list_elements); | |
8b70b953 | 3644 | } |
9291a0cd | 3645 | |
3063847f | 3646 | create_addrmap_from_index (dwarf2_per_objfile, map.get ()); |
9291a0cd | 3647 | |
3063847f | 3648 | dwarf2_per_objfile->index_table = std::move (map); |
9291a0cd | 3649 | dwarf2_per_objfile->using_index = 1; |
7b9f3c50 | 3650 | dwarf2_per_objfile->quick_file_names_table = |
b76e467d | 3651 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
9291a0cd TT |
3652 | |
3653 | return 1; | |
3654 | } | |
3655 | ||
dee91e82 | 3656 | /* die_reader_func for dw2_get_file_names. */ |
2fdf6df6 | 3657 | |
dee91e82 DE |
3658 | static void |
3659 | dw2_get_file_names_reader (const struct die_reader_specs *reader, | |
d521ce57 | 3660 | const gdb_byte *info_ptr, |
dee91e82 DE |
3661 | struct die_info *comp_unit_die, |
3662 | int has_children, | |
3663 | void *data) | |
9291a0cd | 3664 | { |
dee91e82 | 3665 | struct dwarf2_cu *cu = reader->cu; |
ed2dc618 | 3666 | struct dwarf2_per_cu_data *this_cu = cu->per_cu; |
518817b3 SM |
3667 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3668 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 3669 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 3670 | struct dwarf2_per_cu_data *lh_cu; |
9291a0cd | 3671 | struct attribute *attr; |
dee91e82 | 3672 | int i; |
7b9f3c50 DE |
3673 | void **slot; |
3674 | struct quick_file_names *qfn; | |
9291a0cd | 3675 | |
0186c6a7 DE |
3676 | gdb_assert (! this_cu->is_debug_types); |
3677 | ||
07261596 TT |
3678 | /* Our callers never want to match partial units -- instead they |
3679 | will match the enclosing full CU. */ | |
3680 | if (comp_unit_die->tag == DW_TAG_partial_unit) | |
3681 | { | |
3682 | this_cu->v.quick->no_file_data = 1; | |
3683 | return; | |
3684 | } | |
3685 | ||
0186c6a7 | 3686 | lh_cu = this_cu; |
7b9f3c50 | 3687 | slot = NULL; |
dee91e82 | 3688 | |
fff8551c | 3689 | line_header_up lh; |
9c541725 | 3690 | sect_offset line_offset {}; |
fff8551c | 3691 | |
dee91e82 | 3692 | attr = dwarf2_attr (comp_unit_die, DW_AT_stmt_list, cu); |
9291a0cd TT |
3693 | if (attr) |
3694 | { | |
7b9f3c50 DE |
3695 | struct quick_file_names find_entry; |
3696 | ||
9c541725 | 3697 | line_offset = (sect_offset) DW_UNSND (attr); |
7b9f3c50 DE |
3698 | |
3699 | /* We may have already read in this line header (TU line header sharing). | |
3700 | If we have we're done. */ | |
094b34ac | 3701 | find_entry.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3702 | find_entry.hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3703 | slot = htab_find_slot (dwarf2_per_objfile->quick_file_names_table, |
3704 | &find_entry, INSERT); | |
3705 | if (*slot != NULL) | |
3706 | { | |
9a3c8263 | 3707 | lh_cu->v.quick->file_names = (struct quick_file_names *) *slot; |
dee91e82 | 3708 | return; |
7b9f3c50 DE |
3709 | } |
3710 | ||
3019eac3 | 3711 | lh = dwarf_decode_line_header (line_offset, cu); |
9291a0cd TT |
3712 | } |
3713 | if (lh == NULL) | |
3714 | { | |
094b34ac | 3715 | lh_cu->v.quick->no_file_data = 1; |
dee91e82 | 3716 | return; |
9291a0cd TT |
3717 | } |
3718 | ||
8d749320 | 3719 | qfn = XOBNEW (&objfile->objfile_obstack, struct quick_file_names); |
094b34ac | 3720 | qfn->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 3721 | qfn->hash.line_sect_off = line_offset; |
7b9f3c50 DE |
3722 | gdb_assert (slot != NULL); |
3723 | *slot = qfn; | |
9291a0cd | 3724 | |
d721ba37 | 3725 | file_and_directory fnd = find_file_and_directory (comp_unit_die, cu); |
9291a0cd | 3726 | |
fff8551c | 3727 | qfn->num_file_names = lh->file_names.size (); |
8d749320 | 3728 | qfn->file_names = |
fff8551c PA |
3729 | XOBNEWVEC (&objfile->objfile_obstack, const char *, lh->file_names.size ()); |
3730 | for (i = 0; i < lh->file_names.size (); ++i) | |
3731 | qfn->file_names[i] = file_full_name (i + 1, lh.get (), fnd.comp_dir); | |
7b9f3c50 | 3732 | qfn->real_names = NULL; |
9291a0cd | 3733 | |
094b34ac | 3734 | lh_cu->v.quick->file_names = qfn; |
dee91e82 DE |
3735 | } |
3736 | ||
3737 | /* A helper for the "quick" functions which attempts to read the line | |
3738 | table for THIS_CU. */ | |
3739 | ||
3740 | static struct quick_file_names * | |
e4a48d9d | 3741 | dw2_get_file_names (struct dwarf2_per_cu_data *this_cu) |
dee91e82 | 3742 | { |
0186c6a7 DE |
3743 | /* This should never be called for TUs. */ |
3744 | gdb_assert (! this_cu->is_debug_types); | |
3745 | /* Nor type unit groups. */ | |
3746 | gdb_assert (! IS_TYPE_UNIT_GROUP (this_cu)); | |
f4dc4d17 | 3747 | |
dee91e82 DE |
3748 | if (this_cu->v.quick->file_names != NULL) |
3749 | return this_cu->v.quick->file_names; | |
3750 | /* If we know there is no line data, no point in looking again. */ | |
3751 | if (this_cu->v.quick->no_file_data) | |
3752 | return NULL; | |
3753 | ||
0186c6a7 | 3754 | init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL); |
dee91e82 DE |
3755 | |
3756 | if (this_cu->v.quick->no_file_data) | |
3757 | return NULL; | |
3758 | return this_cu->v.quick->file_names; | |
9291a0cd TT |
3759 | } |
3760 | ||
3761 | /* A helper for the "quick" functions which computes and caches the | |
7b9f3c50 | 3762 | real path for a given file name from the line table. */ |
2fdf6df6 | 3763 | |
9291a0cd | 3764 | static const char * |
7b9f3c50 DE |
3765 | dw2_get_real_path (struct objfile *objfile, |
3766 | struct quick_file_names *qfn, int index) | |
9291a0cd | 3767 | { |
7b9f3c50 DE |
3768 | if (qfn->real_names == NULL) |
3769 | qfn->real_names = OBSTACK_CALLOC (&objfile->objfile_obstack, | |
26f2dc30 | 3770 | qfn->num_file_names, const char *); |
9291a0cd | 3771 | |
7b9f3c50 | 3772 | if (qfn->real_names[index] == NULL) |
14278e1f | 3773 | qfn->real_names[index] = gdb_realpath (qfn->file_names[index]).release (); |
9291a0cd | 3774 | |
7b9f3c50 | 3775 | return qfn->real_names[index]; |
9291a0cd TT |
3776 | } |
3777 | ||
3778 | static struct symtab * | |
3779 | dw2_find_last_source_symtab (struct objfile *objfile) | |
3780 | { | |
ed2dc618 SM |
3781 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3782 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 3783 | dwarf2_per_cu_data *dwarf_cu = dwarf2_per_objfile->all_comp_units.back (); |
58f0c718 | 3784 | compunit_symtab *cust = dw2_instantiate_symtab (dwarf_cu, false); |
ae2de4f8 | 3785 | |
43f3e411 DE |
3786 | if (cust == NULL) |
3787 | return NULL; | |
ed2dc618 | 3788 | |
43f3e411 | 3789 | return compunit_primary_filetab (cust); |
9291a0cd TT |
3790 | } |
3791 | ||
7b9f3c50 DE |
3792 | /* Traversal function for dw2_forget_cached_source_info. */ |
3793 | ||
3794 | static int | |
3795 | dw2_free_cached_file_names (void **slot, void *info) | |
9291a0cd | 3796 | { |
7b9f3c50 | 3797 | struct quick_file_names *file_data = (struct quick_file_names *) *slot; |
9291a0cd | 3798 | |
7b9f3c50 | 3799 | if (file_data->real_names) |
9291a0cd | 3800 | { |
7b9f3c50 | 3801 | int i; |
9291a0cd | 3802 | |
7b9f3c50 | 3803 | for (i = 0; i < file_data->num_file_names; ++i) |
9291a0cd | 3804 | { |
7b9f3c50 DE |
3805 | xfree ((void*) file_data->real_names[i]); |
3806 | file_data->real_names[i] = NULL; | |
9291a0cd TT |
3807 | } |
3808 | } | |
7b9f3c50 DE |
3809 | |
3810 | return 1; | |
3811 | } | |
3812 | ||
3813 | static void | |
3814 | dw2_forget_cached_source_info (struct objfile *objfile) | |
3815 | { | |
ed2dc618 SM |
3816 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3817 | = get_dwarf2_per_objfile (objfile); | |
7b9f3c50 DE |
3818 | |
3819 | htab_traverse_noresize (dwarf2_per_objfile->quick_file_names_table, | |
3820 | dw2_free_cached_file_names, NULL); | |
9291a0cd TT |
3821 | } |
3822 | ||
f8eba3c6 TT |
3823 | /* Helper function for dw2_map_symtabs_matching_filename that expands |
3824 | the symtabs and calls the iterator. */ | |
3825 | ||
3826 | static int | |
3827 | dw2_map_expand_apply (struct objfile *objfile, | |
3828 | struct dwarf2_per_cu_data *per_cu, | |
f5b95b50 | 3829 | const char *name, const char *real_path, |
14bc53a8 | 3830 | gdb::function_view<bool (symtab *)> callback) |
f8eba3c6 | 3831 | { |
43f3e411 | 3832 | struct compunit_symtab *last_made = objfile->compunit_symtabs; |
f8eba3c6 TT |
3833 | |
3834 | /* Don't visit already-expanded CUs. */ | |
43f3e411 | 3835 | if (per_cu->v.quick->compunit_symtab) |
f8eba3c6 TT |
3836 | return 0; |
3837 | ||
3838 | /* This may expand more than one symtab, and we want to iterate over | |
3839 | all of them. */ | |
58f0c718 | 3840 | dw2_instantiate_symtab (per_cu, false); |
f8eba3c6 | 3841 | |
14bc53a8 PA |
3842 | return iterate_over_some_symtabs (name, real_path, objfile->compunit_symtabs, |
3843 | last_made, callback); | |
f8eba3c6 TT |
3844 | } |
3845 | ||
3846 | /* Implementation of the map_symtabs_matching_filename method. */ | |
3847 | ||
14bc53a8 PA |
3848 | static bool |
3849 | dw2_map_symtabs_matching_filename | |
3850 | (struct objfile *objfile, const char *name, const char *real_path, | |
3851 | gdb::function_view<bool (symtab *)> callback) | |
9291a0cd | 3852 | { |
c011a4f4 | 3853 | const char *name_basename = lbasename (name); |
ed2dc618 SM |
3854 | struct dwarf2_per_objfile *dwarf2_per_objfile |
3855 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 3856 | |
848e3e78 DE |
3857 | /* The rule is CUs specify all the files, including those used by |
3858 | any TU, so there's no need to scan TUs here. */ | |
f4dc4d17 | 3859 | |
b76e467d | 3860 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 3861 | { |
3d7bb9d9 | 3862 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 3863 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
3864 | continue; |
3865 | ||
b76e467d | 3866 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 3867 | if (file_data == NULL) |
9291a0cd TT |
3868 | continue; |
3869 | ||
b76e467d | 3870 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 3871 | { |
7b9f3c50 | 3872 | const char *this_name = file_data->file_names[j]; |
da235a7c | 3873 | const char *this_real_name; |
9291a0cd | 3874 | |
af529f8f | 3875 | if (compare_filenames_for_search (this_name, name)) |
9291a0cd | 3876 | { |
f5b95b50 | 3877 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3878 | callback)) |
3879 | return true; | |
288e77a7 | 3880 | continue; |
4aac40c8 | 3881 | } |
9291a0cd | 3882 | |
c011a4f4 DE |
3883 | /* Before we invoke realpath, which can get expensive when many |
3884 | files are involved, do a quick comparison of the basenames. */ | |
3885 | if (! basenames_may_differ | |
3886 | && FILENAME_CMP (lbasename (this_name), name_basename) != 0) | |
3887 | continue; | |
3888 | ||
da235a7c JK |
3889 | this_real_name = dw2_get_real_path (objfile, file_data, j); |
3890 | if (compare_filenames_for_search (this_real_name, name)) | |
9291a0cd | 3891 | { |
da235a7c | 3892 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3893 | callback)) |
3894 | return true; | |
288e77a7 | 3895 | continue; |
da235a7c | 3896 | } |
9291a0cd | 3897 | |
da235a7c JK |
3898 | if (real_path != NULL) |
3899 | { | |
af529f8f JK |
3900 | gdb_assert (IS_ABSOLUTE_PATH (real_path)); |
3901 | gdb_assert (IS_ABSOLUTE_PATH (name)); | |
7b9f3c50 | 3902 | if (this_real_name != NULL |
af529f8f | 3903 | && FILENAME_CMP (real_path, this_real_name) == 0) |
9291a0cd | 3904 | { |
f5b95b50 | 3905 | if (dw2_map_expand_apply (objfile, per_cu, name, real_path, |
14bc53a8 PA |
3906 | callback)) |
3907 | return true; | |
288e77a7 | 3908 | continue; |
9291a0cd TT |
3909 | } |
3910 | } | |
3911 | } | |
3912 | } | |
3913 | ||
14bc53a8 | 3914 | return false; |
9291a0cd TT |
3915 | } |
3916 | ||
da51c347 DE |
3917 | /* Struct used to manage iterating over all CUs looking for a symbol. */ |
3918 | ||
3919 | struct dw2_symtab_iterator | |
9291a0cd | 3920 | { |
ed2dc618 SM |
3921 | /* The dwarf2_per_objfile owning the CUs we are iterating on. */ |
3922 | struct dwarf2_per_objfile *dwarf2_per_objfile; | |
da51c347 DE |
3923 | /* If non-zero, only look for symbols that match BLOCK_INDEX. */ |
3924 | int want_specific_block; | |
3925 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
3926 | Unused if !WANT_SPECIFIC_BLOCK. */ | |
3927 | int block_index; | |
3928 | /* The kind of symbol we're looking for. */ | |
3929 | domain_enum domain; | |
3930 | /* The list of CUs from the index entry of the symbol, | |
3931 | or NULL if not found. */ | |
3932 | offset_type *vec; | |
3933 | /* The next element in VEC to look at. */ | |
3934 | int next; | |
3935 | /* The number of elements in VEC, or zero if there is no match. */ | |
3936 | int length; | |
8943b874 DE |
3937 | /* Have we seen a global version of the symbol? |
3938 | If so we can ignore all further global instances. | |
3939 | This is to work around gold/15646, inefficient gold-generated | |
3940 | indices. */ | |
3941 | int global_seen; | |
da51c347 | 3942 | }; |
9291a0cd | 3943 | |
da51c347 DE |
3944 | /* Initialize the index symtab iterator ITER. |
3945 | If WANT_SPECIFIC_BLOCK is non-zero, only look for symbols | |
3946 | in block BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
2fdf6df6 | 3947 | |
9291a0cd | 3948 | static void |
da51c347 | 3949 | dw2_symtab_iter_init (struct dw2_symtab_iterator *iter, |
ed2dc618 | 3950 | struct dwarf2_per_objfile *dwarf2_per_objfile, |
da51c347 DE |
3951 | int want_specific_block, |
3952 | int block_index, | |
3953 | domain_enum domain, | |
3954 | const char *name) | |
3955 | { | |
ed2dc618 | 3956 | iter->dwarf2_per_objfile = dwarf2_per_objfile; |
da51c347 DE |
3957 | iter->want_specific_block = want_specific_block; |
3958 | iter->block_index = block_index; | |
3959 | iter->domain = domain; | |
3960 | iter->next = 0; | |
8943b874 | 3961 | iter->global_seen = 0; |
da51c347 | 3962 | |
3063847f | 3963 | mapped_index *index = dwarf2_per_objfile->index_table.get (); |
ed2dc618 SM |
3964 | |
3965 | /* index is NULL if OBJF_READNOW. */ | |
3966 | if (index != NULL && find_slot_in_mapped_hash (index, name, &iter->vec)) | |
da51c347 DE |
3967 | iter->length = MAYBE_SWAP (*iter->vec); |
3968 | else | |
3969 | { | |
3970 | iter->vec = NULL; | |
3971 | iter->length = 0; | |
3972 | } | |
3973 | } | |
3974 | ||
3975 | /* Return the next matching CU or NULL if there are no more. */ | |
3976 | ||
3977 | static struct dwarf2_per_cu_data * | |
3978 | dw2_symtab_iter_next (struct dw2_symtab_iterator *iter) | |
3979 | { | |
ed2dc618 SM |
3980 | struct dwarf2_per_objfile *dwarf2_per_objfile = iter->dwarf2_per_objfile; |
3981 | ||
da51c347 DE |
3982 | for ( ; iter->next < iter->length; ++iter->next) |
3983 | { | |
3984 | offset_type cu_index_and_attrs = | |
3985 | MAYBE_SWAP (iter->vec[iter->next + 1]); | |
3986 | offset_type cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
da51c347 DE |
3987 | int want_static = iter->block_index != GLOBAL_BLOCK; |
3988 | /* This value is only valid for index versions >= 7. */ | |
3989 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
3990 | gdb_index_symbol_kind symbol_kind = | |
3991 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
3992 | /* Only check the symbol attributes if they're present. | |
3993 | Indices prior to version 7 don't record them, | |
3994 | and indices >= 7 may elide them for certain symbols | |
3995 | (gold does this). */ | |
3996 | int attrs_valid = | |
ed2dc618 | 3997 | (dwarf2_per_objfile->index_table->version >= 7 |
da51c347 DE |
3998 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); |
3999 | ||
3190f0c6 | 4000 | /* Don't crash on bad data. */ |
b76e467d | 4001 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4002 | + dwarf2_per_objfile->all_type_units.size ())) |
3190f0c6 | 4003 | { |
b98664d3 | 4004 | complaint (_(".gdb_index entry has bad CU index" |
4262abfb JK |
4005 | " [in module %s]"), |
4006 | objfile_name (dwarf2_per_objfile->objfile)); | |
3190f0c6 DE |
4007 | continue; |
4008 | } | |
4009 | ||
ff4c9fec | 4010 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
3190f0c6 | 4011 | |
da51c347 | 4012 | /* Skip if already read in. */ |
43f3e411 | 4013 | if (per_cu->v.quick->compunit_symtab) |
da51c347 DE |
4014 | continue; |
4015 | ||
8943b874 DE |
4016 | /* Check static vs global. */ |
4017 | if (attrs_valid) | |
4018 | { | |
4019 | if (iter->want_specific_block | |
4020 | && want_static != is_static) | |
4021 | continue; | |
4022 | /* Work around gold/15646. */ | |
4023 | if (!is_static && iter->global_seen) | |
4024 | continue; | |
4025 | if (!is_static) | |
4026 | iter->global_seen = 1; | |
4027 | } | |
da51c347 DE |
4028 | |
4029 | /* Only check the symbol's kind if it has one. */ | |
4030 | if (attrs_valid) | |
4031 | { | |
4032 | switch (iter->domain) | |
4033 | { | |
4034 | case VAR_DOMAIN: | |
4035 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE | |
4036 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION | |
4037 | /* Some types are also in VAR_DOMAIN. */ | |
4038 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4039 | continue; | |
4040 | break; | |
4041 | case STRUCT_DOMAIN: | |
4042 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
4043 | continue; | |
4044 | break; | |
4045 | case LABEL_DOMAIN: | |
4046 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_OTHER) | |
4047 | continue; | |
4048 | break; | |
4049 | default: | |
4050 | break; | |
4051 | } | |
4052 | } | |
4053 | ||
4054 | ++iter->next; | |
4055 | return per_cu; | |
4056 | } | |
4057 | ||
4058 | return NULL; | |
4059 | } | |
4060 | ||
43f3e411 | 4061 | static struct compunit_symtab * |
da51c347 DE |
4062 | dw2_lookup_symbol (struct objfile *objfile, int block_index, |
4063 | const char *name, domain_enum domain) | |
9291a0cd | 4064 | { |
43f3e411 | 4065 | struct compunit_symtab *stab_best = NULL; |
ed2dc618 SM |
4066 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4067 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 4068 | |
b5ec771e PA |
4069 | lookup_name_info lookup_name (name, symbol_name_match_type::FULL); |
4070 | ||
ed2dc618 SM |
4071 | struct dw2_symtab_iterator iter; |
4072 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4073 | |
ed2dc618 | 4074 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 1, block_index, domain, name); |
9291a0cd | 4075 | |
ed2dc618 SM |
4076 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
4077 | { | |
4078 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 4079 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
ed2dc618 | 4080 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 4081 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
da51c347 | 4082 | |
ed2dc618 SM |
4083 | sym = block_find_symbol (block, name, domain, |
4084 | block_find_non_opaque_type_preferred, | |
4085 | &with_opaque); | |
b2e2f908 | 4086 | |
ed2dc618 SM |
4087 | /* Some caution must be observed with overloaded functions |
4088 | and methods, since the index will not contain any overload | |
4089 | information (but NAME might contain it). */ | |
da51c347 | 4090 | |
ed2dc618 SM |
4091 | if (sym != NULL |
4092 | && SYMBOL_MATCHES_SEARCH_NAME (sym, lookup_name)) | |
4093 | return stab; | |
4094 | if (with_opaque != NULL | |
4095 | && SYMBOL_MATCHES_SEARCH_NAME (with_opaque, lookup_name)) | |
4096 | stab_best = stab; | |
da51c347 | 4097 | |
ed2dc618 | 4098 | /* Keep looking through other CUs. */ |
9291a0cd | 4099 | } |
9291a0cd | 4100 | |
da51c347 | 4101 | return stab_best; |
9291a0cd TT |
4102 | } |
4103 | ||
4104 | static void | |
4105 | dw2_print_stats (struct objfile *objfile) | |
4106 | { | |
ed2dc618 SM |
4107 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4108 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4109 | int total = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4110 | + dwarf2_per_objfile->all_type_units.size ()); |
ed2dc618 | 4111 | int count = 0; |
9291a0cd | 4112 | |
ed2dc618 | 4113 | for (int i = 0; i < total; ++i) |
9291a0cd | 4114 | { |
ff4c9fec | 4115 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4116 | |
43f3e411 | 4117 | if (!per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4118 | ++count; |
4119 | } | |
e4a48d9d | 4120 | printf_filtered (_(" Number of read CUs: %d\n"), total - count); |
9291a0cd TT |
4121 | printf_filtered (_(" Number of unread CUs: %d\n"), count); |
4122 | } | |
4123 | ||
779bd270 DE |
4124 | /* This dumps minimal information about the index. |
4125 | It is called via "mt print objfiles". | |
4126 | One use is to verify .gdb_index has been loaded by the | |
4127 | gdb.dwarf2/gdb-index.exp testcase. */ | |
4128 | ||
9291a0cd TT |
4129 | static void |
4130 | dw2_dump (struct objfile *objfile) | |
4131 | { | |
ed2dc618 SM |
4132 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4133 | = get_dwarf2_per_objfile (objfile); | |
4134 | ||
779bd270 DE |
4135 | gdb_assert (dwarf2_per_objfile->using_index); |
4136 | printf_filtered (".gdb_index:"); | |
4137 | if (dwarf2_per_objfile->index_table != NULL) | |
4138 | { | |
4139 | printf_filtered (" version %d\n", | |
4140 | dwarf2_per_objfile->index_table->version); | |
4141 | } | |
4142 | else | |
4143 | printf_filtered (" faked for \"readnow\"\n"); | |
4144 | printf_filtered ("\n"); | |
9291a0cd TT |
4145 | } |
4146 | ||
9291a0cd TT |
4147 | static void |
4148 | dw2_expand_symtabs_for_function (struct objfile *objfile, | |
4149 | const char *func_name) | |
4150 | { | |
ed2dc618 SM |
4151 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4152 | = get_dwarf2_per_objfile (objfile); | |
da51c347 | 4153 | |
ed2dc618 SM |
4154 | struct dw2_symtab_iterator iter; |
4155 | struct dwarf2_per_cu_data *per_cu; | |
da51c347 | 4156 | |
ed2dc618 SM |
4157 | /* Note: It doesn't matter what we pass for block_index here. */ |
4158 | dw2_symtab_iter_init (&iter, dwarf2_per_objfile, 0, GLOBAL_BLOCK, VAR_DOMAIN, | |
4159 | func_name); | |
da51c347 | 4160 | |
ed2dc618 | 4161 | while ((per_cu = dw2_symtab_iter_next (&iter)) != NULL) |
58f0c718 | 4162 | dw2_instantiate_symtab (per_cu, false); |
da51c347 | 4163 | |
9291a0cd TT |
4164 | } |
4165 | ||
4166 | static void | |
4167 | dw2_expand_all_symtabs (struct objfile *objfile) | |
4168 | { | |
ed2dc618 SM |
4169 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4170 | = get_dwarf2_per_objfile (objfile); | |
b76e467d | 4171 | int total_units = (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 4172 | + dwarf2_per_objfile->all_type_units.size ()); |
9291a0cd | 4173 | |
ed2dc618 | 4174 | for (int i = 0; i < total_units; ++i) |
9291a0cd | 4175 | { |
ff4c9fec | 4176 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 4177 | |
58f0c718 TT |
4178 | /* We don't want to directly expand a partial CU, because if we |
4179 | read it with the wrong language, then assertion failures can | |
4180 | be triggered later on. See PR symtab/23010. So, tell | |
4181 | dw2_instantiate_symtab to skip partial CUs -- any important | |
4182 | partial CU will be read via DW_TAG_imported_unit anyway. */ | |
4183 | dw2_instantiate_symtab (per_cu, true); | |
9291a0cd TT |
4184 | } |
4185 | } | |
4186 | ||
4187 | static void | |
652a8996 JK |
4188 | dw2_expand_symtabs_with_fullname (struct objfile *objfile, |
4189 | const char *fullname) | |
9291a0cd | 4190 | { |
ed2dc618 SM |
4191 | struct dwarf2_per_objfile *dwarf2_per_objfile |
4192 | = get_dwarf2_per_objfile (objfile); | |
d4637a04 DE |
4193 | |
4194 | /* We don't need to consider type units here. | |
4195 | This is only called for examining code, e.g. expand_line_sal. | |
4196 | There can be an order of magnitude (or more) more type units | |
4197 | than comp units, and we avoid them if we can. */ | |
4198 | ||
b76e467d | 4199 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
9291a0cd | 4200 | { |
3d7bb9d9 | 4201 | /* We only need to look at symtabs not already expanded. */ |
43f3e411 | 4202 | if (per_cu->v.quick->compunit_symtab) |
9291a0cd TT |
4203 | continue; |
4204 | ||
b76e467d | 4205 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
7b9f3c50 | 4206 | if (file_data == NULL) |
9291a0cd TT |
4207 | continue; |
4208 | ||
b76e467d | 4209 | for (int j = 0; j < file_data->num_file_names; ++j) |
9291a0cd | 4210 | { |
652a8996 JK |
4211 | const char *this_fullname = file_data->file_names[j]; |
4212 | ||
4213 | if (filename_cmp (this_fullname, fullname) == 0) | |
9291a0cd | 4214 | { |
58f0c718 | 4215 | dw2_instantiate_symtab (per_cu, false); |
9291a0cd TT |
4216 | break; |
4217 | } | |
4218 | } | |
4219 | } | |
4220 | } | |
4221 | ||
9291a0cd | 4222 | static void |
ade7ed9e | 4223 | dw2_map_matching_symbols (struct objfile *objfile, |
fe978cb0 | 4224 | const char * name, domain_enum domain, |
ade7ed9e | 4225 | int global, |
582942f4 | 4226 | int (*callback) (const struct block *, |
40658b94 | 4227 | struct symbol *, void *), |
b5ec771e | 4228 | void *data, symbol_name_match_type match, |
2edb89d3 | 4229 | symbol_compare_ftype *ordered_compare) |
9291a0cd | 4230 | { |
40658b94 | 4231 | /* Currently unimplemented; used for Ada. The function can be called if the |
a9e6a4bb JK |
4232 | current language is Ada for a non-Ada objfile using GNU index. As Ada |
4233 | does not look for non-Ada symbols this function should just return. */ | |
9291a0cd TT |
4234 | } |
4235 | ||
b5ec771e PA |
4236 | /* Symbol name matcher for .gdb_index names. |
4237 | ||
4238 | Symbol names in .gdb_index have a few particularities: | |
4239 | ||
4240 | - There's no indication of which is the language of each symbol. | |
4241 | ||
4242 | Since each language has its own symbol name matching algorithm, | |
4243 | and we don't know which language is the right one, we must match | |
3f563c84 PA |
4244 | each symbol against all languages. This would be a potential |
4245 | performance problem if it were not mitigated by the | |
4246 | mapped_index::name_components lookup table, which significantly | |
4247 | reduces the number of times we need to call into this matcher, | |
4248 | making it a non-issue. | |
b5ec771e PA |
4249 | |
4250 | - Symbol names in the index have no overload (parameter) | |
4251 | information. I.e., in C++, "foo(int)" and "foo(long)" both | |
4252 | appear as "foo" in the index, for example. | |
4253 | ||
4254 | This means that the lookup names passed to the symbol name | |
4255 | matcher functions must have no parameter information either | |
4256 | because (e.g.) symbol search name "foo" does not match | |
4257 | lookup-name "foo(int)" [while swapping search name for lookup | |
4258 | name would match]. | |
4259 | */ | |
4260 | class gdb_index_symbol_name_matcher | |
4261 | { | |
4262 | public: | |
4263 | /* Prepares the vector of comparison functions for LOOKUP_NAME. */ | |
4264 | gdb_index_symbol_name_matcher (const lookup_name_info &lookup_name); | |
4265 | ||
4266 | /* Walk all the matcher routines and match SYMBOL_NAME against them. | |
4267 | Returns true if any matcher matches. */ | |
4268 | bool matches (const char *symbol_name); | |
4269 | ||
4270 | private: | |
4271 | /* A reference to the lookup name we're matching against. */ | |
4272 | const lookup_name_info &m_lookup_name; | |
4273 | ||
4274 | /* A vector holding all the different symbol name matchers, for all | |
4275 | languages. */ | |
4276 | std::vector<symbol_name_matcher_ftype *> m_symbol_name_matcher_funcs; | |
4277 | }; | |
4278 | ||
4279 | gdb_index_symbol_name_matcher::gdb_index_symbol_name_matcher | |
4280 | (const lookup_name_info &lookup_name) | |
4281 | : m_lookup_name (lookup_name) | |
4282 | { | |
4283 | /* Prepare the vector of comparison functions upfront, to avoid | |
4284 | doing the same work for each symbol. Care is taken to avoid | |
4285 | matching with the same matcher more than once if/when multiple | |
4286 | languages use the same matcher function. */ | |
4287 | auto &matchers = m_symbol_name_matcher_funcs; | |
4288 | matchers.reserve (nr_languages); | |
4289 | ||
4290 | matchers.push_back (default_symbol_name_matcher); | |
4291 | ||
4292 | for (int i = 0; i < nr_languages; i++) | |
4293 | { | |
4294 | const language_defn *lang = language_def ((enum language) i); | |
c63d3e8d | 4295 | symbol_name_matcher_ftype *name_matcher |
618daa93 | 4296 | = get_symbol_name_matcher (lang, m_lookup_name); |
c63d3e8d PA |
4297 | |
4298 | /* Don't insert the same comparison routine more than once. | |
4299 | Note that we do this linear walk instead of a seemingly | |
4300 | cheaper sorted insert, or use a std::set or something like | |
4301 | that, because relative order of function addresses is not | |
4302 | stable. This is not a problem in practice because the number | |
4303 | of supported languages is low, and the cost here is tiny | |
4304 | compared to the number of searches we'll do afterwards using | |
4305 | this object. */ | |
4306 | if (name_matcher != default_symbol_name_matcher | |
4307 | && (std::find (matchers.begin (), matchers.end (), name_matcher) | |
4308 | == matchers.end ())) | |
4309 | matchers.push_back (name_matcher); | |
b5ec771e PA |
4310 | } |
4311 | } | |
4312 | ||
4313 | bool | |
4314 | gdb_index_symbol_name_matcher::matches (const char *symbol_name) | |
4315 | { | |
4316 | for (auto matches_name : m_symbol_name_matcher_funcs) | |
4317 | if (matches_name (symbol_name, m_lookup_name, NULL)) | |
4318 | return true; | |
4319 | ||
4320 | return false; | |
4321 | } | |
4322 | ||
e1ef7d7a PA |
4323 | /* Starting from a search name, return the string that finds the upper |
4324 | bound of all strings that start with SEARCH_NAME in a sorted name | |
4325 | list. Returns the empty string to indicate that the upper bound is | |
4326 | the end of the list. */ | |
4327 | ||
4328 | static std::string | |
4329 | make_sort_after_prefix_name (const char *search_name) | |
4330 | { | |
4331 | /* When looking to complete "func", we find the upper bound of all | |
4332 | symbols that start with "func" by looking for where we'd insert | |
4333 | the closest string that would follow "func" in lexicographical | |
4334 | order. Usually, that's "func"-with-last-character-incremented, | |
4335 | i.e. "fund". Mind non-ASCII characters, though. Usually those | |
4336 | will be UTF-8 multi-byte sequences, but we can't be certain. | |
4337 | Especially mind the 0xff character, which is a valid character in | |
4338 | non-UTF-8 source character sets (e.g. Latin1 'ÿ'), and we can't | |
4339 | rule out compilers allowing it in identifiers. Note that | |
4340 | conveniently, strcmp/strcasecmp are specified to compare | |
4341 | characters interpreted as unsigned char. So what we do is treat | |
4342 | the whole string as a base 256 number composed of a sequence of | |
4343 | base 256 "digits" and add 1 to it. I.e., adding 1 to 0xff wraps | |
4344 | to 0, and carries 1 to the following more-significant position. | |
4345 | If the very first character in SEARCH_NAME ends up incremented | |
4346 | and carries/overflows, then the upper bound is the end of the | |
4347 | list. The string after the empty string is also the empty | |
4348 | string. | |
4349 | ||
4350 | Some examples of this operation: | |
4351 | ||
4352 | SEARCH_NAME => "+1" RESULT | |
4353 | ||
4354 | "abc" => "abd" | |
4355 | "ab\xff" => "ac" | |
4356 | "\xff" "a" "\xff" => "\xff" "b" | |
4357 | "\xff" => "" | |
4358 | "\xff\xff" => "" | |
4359 | "" => "" | |
4360 | ||
4361 | Then, with these symbols for example: | |
4362 | ||
4363 | func | |
4364 | func1 | |
4365 | fund | |
4366 | ||
4367 | completing "func" looks for symbols between "func" and | |
4368 | "func"-with-last-character-incremented, i.e. "fund" (exclusive), | |
4369 | which finds "func" and "func1", but not "fund". | |
4370 | ||
4371 | And with: | |
4372 | ||
4373 | funcÿ (Latin1 'ÿ' [0xff]) | |
4374 | funcÿ1 | |
4375 | fund | |
4376 | ||
4377 | completing "funcÿ" looks for symbols between "funcÿ" and "fund" | |
4378 | (exclusive), which finds "funcÿ" and "funcÿ1", but not "fund". | |
4379 | ||
4380 | And with: | |
4381 | ||
4382 | ÿÿ (Latin1 'ÿ' [0xff]) | |
4383 | ÿÿ1 | |
4384 | ||
4385 | completing "ÿ" or "ÿÿ" looks for symbols between between "ÿÿ" and | |
4386 | the end of the list. | |
4387 | */ | |
4388 | std::string after = search_name; | |
4389 | while (!after.empty () && (unsigned char) after.back () == 0xff) | |
4390 | after.pop_back (); | |
4391 | if (!after.empty ()) | |
4392 | after.back () = (unsigned char) after.back () + 1; | |
4393 | return after; | |
4394 | } | |
4395 | ||
5c58de74 | 4396 | /* See declaration. */ |
61d96d7e | 4397 | |
5c58de74 PA |
4398 | std::pair<std::vector<name_component>::const_iterator, |
4399 | std::vector<name_component>::const_iterator> | |
44ed8f3e | 4400 | mapped_index_base::find_name_components_bounds |
5c58de74 | 4401 | (const lookup_name_info &lookup_name_without_params) const |
3f563c84 | 4402 | { |
5c58de74 PA |
4403 | auto *name_cmp |
4404 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
3f563c84 PA |
4405 | |
4406 | const char *cplus | |
c62446b1 | 4407 | = lookup_name_without_params.cplus ().lookup_name ().c_str (); |
9291a0cd | 4408 | |
3f563c84 PA |
4409 | /* Comparison function object for lower_bound that matches against a |
4410 | given symbol name. */ | |
4411 | auto lookup_compare_lower = [&] (const name_component &elem, | |
4412 | const char *name) | |
4413 | { | |
5c58de74 | 4414 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4415 | const char *elem_name = elem_qualified + elem.name_offset; |
4416 | return name_cmp (elem_name, name) < 0; | |
4417 | }; | |
4418 | ||
4419 | /* Comparison function object for upper_bound that matches against a | |
4420 | given symbol name. */ | |
4421 | auto lookup_compare_upper = [&] (const char *name, | |
4422 | const name_component &elem) | |
4423 | { | |
5c58de74 | 4424 | const char *elem_qualified = this->symbol_name_at (elem.idx); |
3f563c84 PA |
4425 | const char *elem_name = elem_qualified + elem.name_offset; |
4426 | return name_cmp (name, elem_name) < 0; | |
4427 | }; | |
4428 | ||
5c58de74 PA |
4429 | auto begin = this->name_components.begin (); |
4430 | auto end = this->name_components.end (); | |
3f563c84 PA |
4431 | |
4432 | /* Find the lower bound. */ | |
4433 | auto lower = [&] () | |
4434 | { | |
5c58de74 | 4435 | if (lookup_name_without_params.completion_mode () && cplus[0] == '\0') |
3f563c84 PA |
4436 | return begin; |
4437 | else | |
4438 | return std::lower_bound (begin, end, cplus, lookup_compare_lower); | |
4439 | } (); | |
4440 | ||
4441 | /* Find the upper bound. */ | |
4442 | auto upper = [&] () | |
4443 | { | |
5c58de74 | 4444 | if (lookup_name_without_params.completion_mode ()) |
3f563c84 | 4445 | { |
e1ef7d7a PA |
4446 | /* In completion mode, we want UPPER to point past all |
4447 | symbols names that have the same prefix. I.e., with | |
4448 | these symbols, and completing "func": | |
4449 | ||
4450 | function << lower bound | |
4451 | function1 | |
4452 | other_function << upper bound | |
4453 | ||
4454 | We find the upper bound by looking for the insertion | |
4455 | point of "func"-with-last-character-incremented, | |
4456 | i.e. "fund". */ | |
4457 | std::string after = make_sort_after_prefix_name (cplus); | |
4458 | if (after.empty ()) | |
3f563c84 | 4459 | return end; |
e6b2f5ef PA |
4460 | return std::lower_bound (lower, end, after.c_str (), |
4461 | lookup_compare_lower); | |
3f563c84 PA |
4462 | } |
4463 | else | |
4464 | return std::upper_bound (lower, end, cplus, lookup_compare_upper); | |
4465 | } (); | |
4466 | ||
5c58de74 PA |
4467 | return {lower, upper}; |
4468 | } | |
4469 | ||
4470 | /* See declaration. */ | |
4471 | ||
4472 | void | |
44ed8f3e | 4473 | mapped_index_base::build_name_components () |
5c58de74 PA |
4474 | { |
4475 | if (!this->name_components.empty ()) | |
4476 | return; | |
4477 | ||
4478 | this->name_components_casing = case_sensitivity; | |
4479 | auto *name_cmp | |
4480 | = this->name_components_casing == case_sensitive_on ? strcmp : strcasecmp; | |
4481 | ||
4482 | /* The code below only knows how to break apart components of C++ | |
4483 | symbol names (and other languages that use '::' as | |
4484 | namespace/module separator). If we add support for wild matching | |
4485 | to some language that uses some other operator (E.g., Ada, Go and | |
4486 | D use '.'), then we'll need to try splitting the symbol name | |
4487 | according to that language too. Note that Ada does support wild | |
4488 | matching, but doesn't currently support .gdb_index. */ | |
44ed8f3e PA |
4489 | auto count = this->symbol_name_count (); |
4490 | for (offset_type idx = 0; idx < count; idx++) | |
5c58de74 | 4491 | { |
44ed8f3e | 4492 | if (this->symbol_name_slot_invalid (idx)) |
5c58de74 PA |
4493 | continue; |
4494 | ||
4495 | const char *name = this->symbol_name_at (idx); | |
4496 | ||
4497 | /* Add each name component to the name component table. */ | |
4498 | unsigned int previous_len = 0; | |
4499 | for (unsigned int current_len = cp_find_first_component (name); | |
4500 | name[current_len] != '\0'; | |
4501 | current_len += cp_find_first_component (name + current_len)) | |
4502 | { | |
4503 | gdb_assert (name[current_len] == ':'); | |
4504 | this->name_components.push_back ({previous_len, idx}); | |
4505 | /* Skip the '::'. */ | |
4506 | current_len += 2; | |
4507 | previous_len = current_len; | |
4508 | } | |
4509 | this->name_components.push_back ({previous_len, idx}); | |
4510 | } | |
4511 | ||
4512 | /* Sort name_components elements by name. */ | |
4513 | auto name_comp_compare = [&] (const name_component &left, | |
4514 | const name_component &right) | |
4515 | { | |
4516 | const char *left_qualified = this->symbol_name_at (left.idx); | |
4517 | const char *right_qualified = this->symbol_name_at (right.idx); | |
4518 | ||
4519 | const char *left_name = left_qualified + left.name_offset; | |
4520 | const char *right_name = right_qualified + right.name_offset; | |
4521 | ||
4522 | return name_cmp (left_name, right_name) < 0; | |
4523 | }; | |
4524 | ||
4525 | std::sort (this->name_components.begin (), | |
4526 | this->name_components.end (), | |
4527 | name_comp_compare); | |
4528 | } | |
4529 | ||
4530 | /* Helper for dw2_expand_symtabs_matching that works with a | |
44ed8f3e PA |
4531 | mapped_index_base instead of the containing objfile. This is split |
4532 | to a separate function in order to be able to unit test the | |
4533 | name_components matching using a mock mapped_index_base. For each | |
5c58de74 | 4534 | symbol name that matches, calls MATCH_CALLBACK, passing it the |
44ed8f3e | 4535 | symbol's index in the mapped_index_base symbol table. */ |
5c58de74 PA |
4536 | |
4537 | static void | |
4538 | dw2_expand_symtabs_matching_symbol | |
44ed8f3e | 4539 | (mapped_index_base &index, |
5c58de74 PA |
4540 | const lookup_name_info &lookup_name_in, |
4541 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
4542 | enum search_domain kind, | |
4543 | gdb::function_view<void (offset_type)> match_callback) | |
4544 | { | |
4545 | lookup_name_info lookup_name_without_params | |
4546 | = lookup_name_in.make_ignore_params (); | |
4547 | gdb_index_symbol_name_matcher lookup_name_matcher | |
4548 | (lookup_name_without_params); | |
4549 | ||
4550 | /* Build the symbol name component sorted vector, if we haven't | |
4551 | yet. */ | |
4552 | index.build_name_components (); | |
4553 | ||
4554 | auto bounds = index.find_name_components_bounds (lookup_name_without_params); | |
4555 | ||
3f563c84 PA |
4556 | /* Now for each symbol name in range, check to see if we have a name |
4557 | match, and if so, call the MATCH_CALLBACK callback. */ | |
4558 | ||
4559 | /* The same symbol may appear more than once in the range though. | |
4560 | E.g., if we're looking for symbols that complete "w", and we have | |
4561 | a symbol named "w1::w2", we'll find the two name components for | |
4562 | that same symbol in the range. To be sure we only call the | |
4563 | callback once per symbol, we first collect the symbol name | |
4564 | indexes that matched in a temporary vector and ignore | |
4565 | duplicates. */ | |
4566 | std::vector<offset_type> matches; | |
5c58de74 | 4567 | matches.reserve (std::distance (bounds.first, bounds.second)); |
3f563c84 | 4568 | |
5c58de74 | 4569 | for (; bounds.first != bounds.second; ++bounds.first) |
3f563c84 | 4570 | { |
5c58de74 | 4571 | const char *qualified = index.symbol_name_at (bounds.first->idx); |
3f563c84 PA |
4572 | |
4573 | if (!lookup_name_matcher.matches (qualified) | |
4574 | || (symbol_matcher != NULL && !symbol_matcher (qualified))) | |
9291a0cd TT |
4575 | continue; |
4576 | ||
5c58de74 | 4577 | matches.push_back (bounds.first->idx); |
3f563c84 PA |
4578 | } |
4579 | ||
4580 | std::sort (matches.begin (), matches.end ()); | |
4581 | ||
4582 | /* Finally call the callback, once per match. */ | |
4583 | ULONGEST prev = -1; | |
4584 | for (offset_type idx : matches) | |
4585 | { | |
4586 | if (prev != idx) | |
4587 | { | |
4588 | match_callback (idx); | |
4589 | prev = idx; | |
4590 | } | |
4591 | } | |
4592 | ||
4593 | /* Above we use a type wider than idx's for 'prev', since 0 and | |
4594 | (offset_type)-1 are both possible values. */ | |
4595 | static_assert (sizeof (prev) > sizeof (offset_type), ""); | |
4596 | } | |
4597 | ||
c62446b1 PA |
4598 | #if GDB_SELF_TEST |
4599 | ||
4600 | namespace selftests { namespace dw2_expand_symtabs_matching { | |
4601 | ||
a3c5fafd PA |
4602 | /* A mock .gdb_index/.debug_names-like name index table, enough to |
4603 | exercise dw2_expand_symtabs_matching_symbol, which works with the | |
4604 | mapped_index_base interface. Builds an index from the symbol list | |
4605 | passed as parameter to the constructor. */ | |
4606 | class mock_mapped_index : public mapped_index_base | |
c62446b1 PA |
4607 | { |
4608 | public: | |
a3c5fafd PA |
4609 | mock_mapped_index (gdb::array_view<const char *> symbols) |
4610 | : m_symbol_table (symbols) | |
c62446b1 PA |
4611 | {} |
4612 | ||
a3c5fafd | 4613 | DISABLE_COPY_AND_ASSIGN (mock_mapped_index); |
c62446b1 | 4614 | |
a3c5fafd | 4615 | /* Return the number of names in the symbol table. */ |
632e107b | 4616 | size_t symbol_name_count () const override |
c62446b1 | 4617 | { |
a3c5fafd | 4618 | return m_symbol_table.size (); |
c62446b1 PA |
4619 | } |
4620 | ||
a3c5fafd | 4621 | /* Get the name of the symbol at IDX in the symbol table. */ |
632e107b | 4622 | const char *symbol_name_at (offset_type idx) const override |
a3c5fafd PA |
4623 | { |
4624 | return m_symbol_table[idx]; | |
4625 | } | |
c62446b1 | 4626 | |
a3c5fafd PA |
4627 | private: |
4628 | gdb::array_view<const char *> m_symbol_table; | |
c62446b1 PA |
4629 | }; |
4630 | ||
4631 | /* Convenience function that converts a NULL pointer to a "<null>" | |
4632 | string, to pass to print routines. */ | |
4633 | ||
4634 | static const char * | |
4635 | string_or_null (const char *str) | |
4636 | { | |
4637 | return str != NULL ? str : "<null>"; | |
4638 | } | |
4639 | ||
4640 | /* Check if a lookup_name_info built from | |
4641 | NAME/MATCH_TYPE/COMPLETION_MODE matches the symbols in the mock | |
4642 | index. EXPECTED_LIST is the list of expected matches, in expected | |
4643 | matching order. If no match expected, then an empty list is | |
4644 | specified. Returns true on success. On failure prints a warning | |
4645 | indicating the file:line that failed, and returns false. */ | |
4646 | ||
4647 | static bool | |
4648 | check_match (const char *file, int line, | |
4649 | mock_mapped_index &mock_index, | |
4650 | const char *name, symbol_name_match_type match_type, | |
4651 | bool completion_mode, | |
4652 | std::initializer_list<const char *> expected_list) | |
4653 | { | |
4654 | lookup_name_info lookup_name (name, match_type, completion_mode); | |
4655 | ||
4656 | bool matched = true; | |
4657 | ||
4658 | auto mismatch = [&] (const char *expected_str, | |
4659 | const char *got) | |
4660 | { | |
4661 | warning (_("%s:%d: match_type=%s, looking-for=\"%s\", " | |
4662 | "expected=\"%s\", got=\"%s\"\n"), | |
4663 | file, line, | |
4664 | (match_type == symbol_name_match_type::FULL | |
4665 | ? "FULL" : "WILD"), | |
4666 | name, string_or_null (expected_str), string_or_null (got)); | |
4667 | matched = false; | |
4668 | }; | |
4669 | ||
4670 | auto expected_it = expected_list.begin (); | |
4671 | auto expected_end = expected_list.end (); | |
4672 | ||
a3c5fafd | 4673 | dw2_expand_symtabs_matching_symbol (mock_index, lookup_name, |
c62446b1 PA |
4674 | NULL, ALL_DOMAIN, |
4675 | [&] (offset_type idx) | |
4676 | { | |
a3c5fafd | 4677 | const char *matched_name = mock_index.symbol_name_at (idx); |
c62446b1 PA |
4678 | const char *expected_str |
4679 | = expected_it == expected_end ? NULL : *expected_it++; | |
4680 | ||
4681 | if (expected_str == NULL || strcmp (expected_str, matched_name) != 0) | |
4682 | mismatch (expected_str, matched_name); | |
4683 | }); | |
4684 | ||
4685 | const char *expected_str | |
4686 | = expected_it == expected_end ? NULL : *expected_it++; | |
4687 | if (expected_str != NULL) | |
4688 | mismatch (expected_str, NULL); | |
4689 | ||
4690 | return matched; | |
4691 | } | |
4692 | ||
4693 | /* The symbols added to the mock mapped_index for testing (in | |
4694 | canonical form). */ | |
4695 | static const char *test_symbols[] = { | |
4696 | "function", | |
4697 | "std::bar", | |
4698 | "std::zfunction", | |
4699 | "std::zfunction2", | |
4700 | "w1::w2", | |
4701 | "ns::foo<char*>", | |
4702 | "ns::foo<int>", | |
4703 | "ns::foo<long>", | |
a20714ff PA |
4704 | "ns2::tmpl<int>::foo2", |
4705 | "(anonymous namespace)::A::B::C", | |
c62446b1 | 4706 | |
e1ef7d7a PA |
4707 | /* These are used to check that the increment-last-char in the |
4708 | matching algorithm for completion doesn't match "t1_fund" when | |
4709 | completing "t1_func". */ | |
4710 | "t1_func", | |
4711 | "t1_func1", | |
4712 | "t1_fund", | |
4713 | "t1_fund1", | |
4714 | ||
4715 | /* A UTF-8 name with multi-byte sequences to make sure that | |
4716 | cp-name-parser understands this as a single identifier ("função" | |
4717 | is "function" in PT). */ | |
4718 | u8"u8função", | |
4719 | ||
4720 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4721 | "yfunc\377", | |
4722 | ||
4723 | /* \377 (0xff) is Latin1 'ÿ'. */ | |
4724 | "\377", | |
4725 | "\377\377123", | |
4726 | ||
c62446b1 PA |
4727 | /* A name with all sorts of complications. Starts with "z" to make |
4728 | it easier for the completion tests below. */ | |
4729 | #define Z_SYM_NAME \ | |
4730 | "z::std::tuple<(anonymous namespace)::ui*, std::bar<(anonymous namespace)::ui> >" \ | |
4731 | "::tuple<(anonymous namespace)::ui*, " \ | |
4732 | "std::default_delete<(anonymous namespace)::ui>, void>" | |
4733 | ||
4734 | Z_SYM_NAME | |
4735 | }; | |
4736 | ||
a3c5fafd PA |
4737 | /* Returns true if the mapped_index_base::find_name_component_bounds |
4738 | method finds EXPECTED_SYMS in INDEX when looking for SEARCH_NAME, | |
4739 | in completion mode. */ | |
5c58de74 PA |
4740 | |
4741 | static bool | |
a3c5fafd | 4742 | check_find_bounds_finds (mapped_index_base &index, |
5c58de74 PA |
4743 | const char *search_name, |
4744 | gdb::array_view<const char *> expected_syms) | |
4745 | { | |
4746 | lookup_name_info lookup_name (search_name, | |
4747 | symbol_name_match_type::FULL, true); | |
4748 | ||
4749 | auto bounds = index.find_name_components_bounds (lookup_name); | |
4750 | ||
4751 | size_t distance = std::distance (bounds.first, bounds.second); | |
4752 | if (distance != expected_syms.size ()) | |
4753 | return false; | |
4754 | ||
4755 | for (size_t exp_elem = 0; exp_elem < distance; exp_elem++) | |
4756 | { | |
4757 | auto nc_elem = bounds.first + exp_elem; | |
4758 | const char *qualified = index.symbol_name_at (nc_elem->idx); | |
4759 | if (strcmp (qualified, expected_syms[exp_elem]) != 0) | |
4760 | return false; | |
4761 | } | |
4762 | ||
4763 | return true; | |
4764 | } | |
4765 | ||
4766 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4767 | method. */ | |
4768 | ||
c62446b1 | 4769 | static void |
5c58de74 PA |
4770 | test_mapped_index_find_name_component_bounds () |
4771 | { | |
4772 | mock_mapped_index mock_index (test_symbols); | |
4773 | ||
a3c5fafd | 4774 | mock_index.build_name_components (); |
5c58de74 PA |
4775 | |
4776 | /* Test the lower-level mapped_index::find_name_component_bounds | |
4777 | method in completion mode. */ | |
4778 | { | |
4779 | static const char *expected_syms[] = { | |
4780 | "t1_func", | |
4781 | "t1_func1", | |
5c58de74 PA |
4782 | }; |
4783 | ||
a3c5fafd | 4784 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4785 | "t1_func", expected_syms)); |
4786 | } | |
4787 | ||
4788 | /* Check that the increment-last-char in the name matching algorithm | |
4789 | for completion doesn't get confused with Ansi1 'ÿ' / 0xff. */ | |
4790 | { | |
4791 | static const char *expected_syms1[] = { | |
4792 | "\377", | |
4793 | "\377\377123", | |
4794 | }; | |
a3c5fafd | 4795 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4796 | "\377", expected_syms1)); |
4797 | ||
4798 | static const char *expected_syms2[] = { | |
4799 | "\377\377123", | |
4800 | }; | |
a3c5fafd | 4801 | SELF_CHECK (check_find_bounds_finds (mock_index, |
5c58de74 PA |
4802 | "\377\377", expected_syms2)); |
4803 | } | |
4804 | } | |
4805 | ||
4806 | /* Test dw2_expand_symtabs_matching_symbol. */ | |
4807 | ||
4808 | static void | |
4809 | test_dw2_expand_symtabs_matching_symbol () | |
c62446b1 PA |
4810 | { |
4811 | mock_mapped_index mock_index (test_symbols); | |
4812 | ||
4813 | /* We let all tests run until the end even if some fails, for debug | |
4814 | convenience. */ | |
4815 | bool any_mismatch = false; | |
4816 | ||
4817 | /* Create the expected symbols list (an initializer_list). Needed | |
4818 | because lists have commas, and we need to pass them to CHECK, | |
4819 | which is a macro. */ | |
4820 | #define EXPECT(...) { __VA_ARGS__ } | |
4821 | ||
4822 | /* Wrapper for check_match that passes down the current | |
4823 | __FILE__/__LINE__. */ | |
4824 | #define CHECK_MATCH(NAME, MATCH_TYPE, COMPLETION_MODE, EXPECTED_LIST) \ | |
4825 | any_mismatch |= !check_match (__FILE__, __LINE__, \ | |
4826 | mock_index, \ | |
4827 | NAME, MATCH_TYPE, COMPLETION_MODE, \ | |
4828 | EXPECTED_LIST) | |
4829 | ||
4830 | /* Identity checks. */ | |
4831 | for (const char *sym : test_symbols) | |
4832 | { | |
4833 | /* Should be able to match all existing symbols. */ | |
4834 | CHECK_MATCH (sym, symbol_name_match_type::FULL, false, | |
4835 | EXPECT (sym)); | |
4836 | ||
4837 | /* Should be able to match all existing symbols with | |
4838 | parameters. */ | |
4839 | std::string with_params = std::string (sym) + "(int)"; | |
4840 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4841 | EXPECT (sym)); | |
4842 | ||
4843 | /* Should be able to match all existing symbols with | |
4844 | parameters and qualifiers. */ | |
4845 | with_params = std::string (sym) + " ( int ) const"; | |
4846 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4847 | EXPECT (sym)); | |
4848 | ||
4849 | /* This should really find sym, but cp-name-parser.y doesn't | |
4850 | know about lvalue/rvalue qualifiers yet. */ | |
4851 | with_params = std::string (sym) + " ( int ) &&"; | |
4852 | CHECK_MATCH (with_params.c_str (), symbol_name_match_type::FULL, false, | |
4853 | {}); | |
4854 | } | |
4855 | ||
e1ef7d7a PA |
4856 | /* Check that the name matching algorithm for completion doesn't get |
4857 | confused with Latin1 'ÿ' / 0xff. */ | |
4858 | { | |
4859 | static const char str[] = "\377"; | |
4860 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4861 | EXPECT ("\377", "\377\377123")); | |
4862 | } | |
4863 | ||
4864 | /* Check that the increment-last-char in the matching algorithm for | |
4865 | completion doesn't match "t1_fund" when completing "t1_func". */ | |
4866 | { | |
4867 | static const char str[] = "t1_func"; | |
4868 | CHECK_MATCH (str, symbol_name_match_type::FULL, true, | |
4869 | EXPECT ("t1_func", "t1_func1")); | |
4870 | } | |
4871 | ||
c62446b1 PA |
4872 | /* Check that completion mode works at each prefix of the expected |
4873 | symbol name. */ | |
4874 | { | |
4875 | static const char str[] = "function(int)"; | |
4876 | size_t len = strlen (str); | |
4877 | std::string lookup; | |
4878 | ||
4879 | for (size_t i = 1; i < len; i++) | |
4880 | { | |
4881 | lookup.assign (str, i); | |
4882 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4883 | EXPECT ("function")); | |
4884 | } | |
4885 | } | |
4886 | ||
4887 | /* While "w" is a prefix of both components, the match function | |
4888 | should still only be called once. */ | |
4889 | { | |
4890 | CHECK_MATCH ("w", symbol_name_match_type::FULL, true, | |
4891 | EXPECT ("w1::w2")); | |
a20714ff PA |
4892 | CHECK_MATCH ("w", symbol_name_match_type::WILD, true, |
4893 | EXPECT ("w1::w2")); | |
c62446b1 PA |
4894 | } |
4895 | ||
4896 | /* Same, with a "complicated" symbol. */ | |
4897 | { | |
4898 | static const char str[] = Z_SYM_NAME; | |
4899 | size_t len = strlen (str); | |
4900 | std::string lookup; | |
4901 | ||
4902 | for (size_t i = 1; i < len; i++) | |
4903 | { | |
4904 | lookup.assign (str, i); | |
4905 | CHECK_MATCH (lookup.c_str (), symbol_name_match_type::FULL, true, | |
4906 | EXPECT (Z_SYM_NAME)); | |
4907 | } | |
4908 | } | |
4909 | ||
4910 | /* In FULL mode, an incomplete symbol doesn't match. */ | |
4911 | { | |
4912 | CHECK_MATCH ("std::zfunction(int", symbol_name_match_type::FULL, false, | |
4913 | {}); | |
4914 | } | |
4915 | ||
4916 | /* A complete symbol with parameters matches any overload, since the | |
4917 | index has no overload info. */ | |
4918 | { | |
4919 | CHECK_MATCH ("std::zfunction(int)", symbol_name_match_type::FULL, true, | |
4920 | EXPECT ("std::zfunction", "std::zfunction2")); | |
a20714ff PA |
4921 | CHECK_MATCH ("zfunction(int)", symbol_name_match_type::WILD, true, |
4922 | EXPECT ("std::zfunction", "std::zfunction2")); | |
4923 | CHECK_MATCH ("zfunc", symbol_name_match_type::WILD, true, | |
4924 | EXPECT ("std::zfunction", "std::zfunction2")); | |
c62446b1 PA |
4925 | } |
4926 | ||
4927 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4928 | template argument list. */ | |
4929 | { | |
4930 | static const char expected[] = "ns::foo<int>"; | |
4931 | CHECK_MATCH ("ns :: foo < int > ", symbol_name_match_type::FULL, false, | |
4932 | EXPECT (expected)); | |
a20714ff PA |
4933 | CHECK_MATCH ("foo < int > ", symbol_name_match_type::WILD, false, |
4934 | EXPECT (expected)); | |
c62446b1 PA |
4935 | } |
4936 | ||
4937 | /* Check that whitespace is ignored appropriately. A symbol with a | |
4938 | template argument list that includes a pointer. */ | |
4939 | { | |
4940 | static const char expected[] = "ns::foo<char*>"; | |
4941 | /* Try both completion and non-completion modes. */ | |
4942 | static const bool completion_mode[2] = {false, true}; | |
4943 | for (size_t i = 0; i < 2; i++) | |
4944 | { | |
4945 | CHECK_MATCH ("ns :: foo < char * >", symbol_name_match_type::FULL, | |
4946 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4947 | CHECK_MATCH ("foo < char * >", symbol_name_match_type::WILD, |
4948 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4949 | |
4950 | CHECK_MATCH ("ns :: foo < char * > (int)", symbol_name_match_type::FULL, | |
4951 | completion_mode[i], EXPECT (expected)); | |
a20714ff PA |
4952 | CHECK_MATCH ("foo < char * > (int)", symbol_name_match_type::WILD, |
4953 | completion_mode[i], EXPECT (expected)); | |
c62446b1 PA |
4954 | } |
4955 | } | |
4956 | ||
4957 | { | |
4958 | /* Check method qualifiers are ignored. */ | |
4959 | static const char expected[] = "ns::foo<char*>"; | |
4960 | CHECK_MATCH ("ns :: foo < char * > ( int ) const", | |
4961 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
4962 | CHECK_MATCH ("ns :: foo < char * > ( int ) &&", | |
4963 | symbol_name_match_type::FULL, true, EXPECT (expected)); | |
a20714ff PA |
4964 | CHECK_MATCH ("foo < char * > ( int ) const", |
4965 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
4966 | CHECK_MATCH ("foo < char * > ( int ) &&", | |
4967 | symbol_name_match_type::WILD, true, EXPECT (expected)); | |
c62446b1 PA |
4968 | } |
4969 | ||
4970 | /* Test lookup names that don't match anything. */ | |
4971 | { | |
a20714ff PA |
4972 | CHECK_MATCH ("bar2", symbol_name_match_type::WILD, false, |
4973 | {}); | |
4974 | ||
c62446b1 PA |
4975 | CHECK_MATCH ("doesntexist", symbol_name_match_type::FULL, false, |
4976 | {}); | |
4977 | } | |
4978 | ||
a20714ff PA |
4979 | /* Some wild matching tests, exercising "(anonymous namespace)", |
4980 | which should not be confused with a parameter list. */ | |
4981 | { | |
4982 | static const char *syms[] = { | |
4983 | "A::B::C", | |
4984 | "B::C", | |
4985 | "C", | |
4986 | "A :: B :: C ( int )", | |
4987 | "B :: C ( int )", | |
4988 | "C ( int )", | |
4989 | }; | |
4990 | ||
4991 | for (const char *s : syms) | |
4992 | { | |
4993 | CHECK_MATCH (s, symbol_name_match_type::WILD, false, | |
4994 | EXPECT ("(anonymous namespace)::A::B::C")); | |
4995 | } | |
4996 | } | |
4997 | ||
4998 | { | |
4999 | static const char expected[] = "ns2::tmpl<int>::foo2"; | |
5000 | CHECK_MATCH ("tmp", symbol_name_match_type::WILD, true, | |
5001 | EXPECT (expected)); | |
5002 | CHECK_MATCH ("tmpl<", symbol_name_match_type::WILD, true, | |
5003 | EXPECT (expected)); | |
5004 | } | |
5005 | ||
c62446b1 PA |
5006 | SELF_CHECK (!any_mismatch); |
5007 | ||
5008 | #undef EXPECT | |
5009 | #undef CHECK_MATCH | |
5010 | } | |
5011 | ||
5c58de74 PA |
5012 | static void |
5013 | run_test () | |
5014 | { | |
5015 | test_mapped_index_find_name_component_bounds (); | |
5016 | test_dw2_expand_symtabs_matching_symbol (); | |
5017 | } | |
5018 | ||
c62446b1 PA |
5019 | }} // namespace selftests::dw2_expand_symtabs_matching |
5020 | ||
5021 | #endif /* GDB_SELF_TEST */ | |
5022 | ||
4b514bc8 JK |
5023 | /* If FILE_MATCHER is NULL or if PER_CU has |
5024 | dwarf2_per_cu_quick_data::MARK set (see | |
5025 | dw_expand_symtabs_matching_file_matcher), expand the CU and call | |
5026 | EXPANSION_NOTIFY on it. */ | |
5027 | ||
5028 | static void | |
5029 | dw2_expand_symtabs_matching_one | |
5030 | (struct dwarf2_per_cu_data *per_cu, | |
5031 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5032 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify) | |
5033 | { | |
5034 | if (file_matcher == NULL || per_cu->v.quick->mark) | |
5035 | { | |
5036 | bool symtab_was_null | |
5037 | = (per_cu->v.quick->compunit_symtab == NULL); | |
5038 | ||
58f0c718 | 5039 | dw2_instantiate_symtab (per_cu, false); |
4b514bc8 JK |
5040 | |
5041 | if (expansion_notify != NULL | |
5042 | && symtab_was_null | |
5043 | && per_cu->v.quick->compunit_symtab != NULL) | |
5044 | expansion_notify (per_cu->v.quick->compunit_symtab); | |
5045 | } | |
5046 | } | |
5047 | ||
3f563c84 PA |
5048 | /* Helper for dw2_expand_matching symtabs. Called on each symbol |
5049 | matched, to expand corresponding CUs that were marked. IDX is the | |
5050 | index of the symbol name that matched. */ | |
5051 | ||
5052 | static void | |
5053 | dw2_expand_marked_cus | |
ed2dc618 | 5054 | (struct dwarf2_per_objfile *dwarf2_per_objfile, offset_type idx, |
3f563c84 PA |
5055 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, |
5056 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5057 | search_domain kind) | |
5058 | { | |
3f563c84 PA |
5059 | offset_type *vec, vec_len, vec_idx; |
5060 | bool global_seen = false; | |
ed2dc618 | 5061 | mapped_index &index = *dwarf2_per_objfile->index_table; |
3f563c84 | 5062 | |
61920122 | 5063 | vec = (offset_type *) (index.constant_pool |
f00a2de2 | 5064 | + MAYBE_SWAP (index.symbol_table[idx].vec)); |
61920122 PA |
5065 | vec_len = MAYBE_SWAP (vec[0]); |
5066 | for (vec_idx = 0; vec_idx < vec_len; ++vec_idx) | |
5067 | { | |
61920122 PA |
5068 | offset_type cu_index_and_attrs = MAYBE_SWAP (vec[vec_idx + 1]); |
5069 | /* This value is only valid for index versions >= 7. */ | |
5070 | int is_static = GDB_INDEX_SYMBOL_STATIC_VALUE (cu_index_and_attrs); | |
5071 | gdb_index_symbol_kind symbol_kind = | |
5072 | GDB_INDEX_SYMBOL_KIND_VALUE (cu_index_and_attrs); | |
5073 | int cu_index = GDB_INDEX_CU_VALUE (cu_index_and_attrs); | |
5074 | /* Only check the symbol attributes if they're present. | |
5075 | Indices prior to version 7 don't record them, | |
5076 | and indices >= 7 may elide them for certain symbols | |
5077 | (gold does this). */ | |
5078 | int attrs_valid = | |
5079 | (index.version >= 7 | |
5080 | && symbol_kind != GDB_INDEX_SYMBOL_KIND_NONE); | |
5081 | ||
5082 | /* Work around gold/15646. */ | |
5083 | if (attrs_valid) | |
9291a0cd | 5084 | { |
61920122 PA |
5085 | if (!is_static && global_seen) |
5086 | continue; | |
5087 | if (!is_static) | |
5088 | global_seen = true; | |
5089 | } | |
3190f0c6 | 5090 | |
61920122 PA |
5091 | /* Only check the symbol's kind if it has one. */ |
5092 | if (attrs_valid) | |
5093 | { | |
5094 | switch (kind) | |
8943b874 | 5095 | { |
61920122 PA |
5096 | case VARIABLES_DOMAIN: |
5097 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_VARIABLE) | |
5098 | continue; | |
5099 | break; | |
5100 | case FUNCTIONS_DOMAIN: | |
5101 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_FUNCTION) | |
8943b874 | 5102 | continue; |
61920122 PA |
5103 | break; |
5104 | case TYPES_DOMAIN: | |
5105 | if (symbol_kind != GDB_INDEX_SYMBOL_KIND_TYPE) | |
5106 | continue; | |
5107 | break; | |
5108 | default: | |
5109 | break; | |
8943b874 | 5110 | } |
61920122 | 5111 | } |
8943b874 | 5112 | |
61920122 | 5113 | /* Don't crash on bad data. */ |
b76e467d | 5114 | if (cu_index >= (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 5115 | + dwarf2_per_objfile->all_type_units.size ())) |
61920122 | 5116 | { |
b98664d3 | 5117 | complaint (_(".gdb_index entry has bad CU index" |
ed2dc618 SM |
5118 | " [in module %s]"), |
5119 | objfile_name (dwarf2_per_objfile->objfile)); | |
61920122 PA |
5120 | continue; |
5121 | } | |
5122 | ||
ff4c9fec | 5123 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (cu_index); |
4b514bc8 JK |
5124 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, |
5125 | expansion_notify); | |
61920122 PA |
5126 | } |
5127 | } | |
5128 | ||
4b514bc8 JK |
5129 | /* If FILE_MATCHER is non-NULL, set all the |
5130 | dwarf2_per_cu_quick_data::MARK of the current DWARF2_PER_OBJFILE | |
5131 | that match FILE_MATCHER. */ | |
5132 | ||
61920122 | 5133 | static void |
4b514bc8 | 5134 | dw_expand_symtabs_matching_file_matcher |
ed2dc618 SM |
5135 | (struct dwarf2_per_objfile *dwarf2_per_objfile, |
5136 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher) | |
61920122 | 5137 | { |
4b514bc8 | 5138 | if (file_matcher == NULL) |
61920122 PA |
5139 | return; |
5140 | ||
4b514bc8 JK |
5141 | objfile *const objfile = dwarf2_per_objfile->objfile; |
5142 | ||
5143 | htab_up visited_found (htab_create_alloc (10, htab_hash_pointer, | |
5144 | htab_eq_pointer, | |
5145 | NULL, xcalloc, xfree)); | |
5146 | htab_up visited_not_found (htab_create_alloc (10, htab_hash_pointer, | |
61920122 PA |
5147 | htab_eq_pointer, |
5148 | NULL, xcalloc, xfree)); | |
61920122 | 5149 | |
4b514bc8 JK |
5150 | /* The rule is CUs specify all the files, including those used by |
5151 | any TU, so there's no need to scan TUs here. */ | |
61920122 | 5152 | |
b76e467d | 5153 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5154 | { |
927aa2e7 JK |
5155 | QUIT; |
5156 | ||
5157 | per_cu->v.quick->mark = 0; | |
5158 | ||
5159 | /* We only need to look at symtabs not already expanded. */ | |
5160 | if (per_cu->v.quick->compunit_symtab) | |
5161 | continue; | |
5162 | ||
b76e467d | 5163 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5164 | if (file_data == NULL) |
5165 | continue; | |
5166 | ||
5167 | if (htab_find (visited_not_found.get (), file_data) != NULL) | |
5168 | continue; | |
5169 | else if (htab_find (visited_found.get (), file_data) != NULL) | |
5170 | { | |
5171 | per_cu->v.quick->mark = 1; | |
5172 | continue; | |
5173 | } | |
5174 | ||
b76e467d | 5175 | for (int j = 0; j < file_data->num_file_names; ++j) |
927aa2e7 JK |
5176 | { |
5177 | const char *this_real_name; | |
5178 | ||
5179 | if (file_matcher (file_data->file_names[j], false)) | |
5180 | { | |
5181 | per_cu->v.quick->mark = 1; | |
5182 | break; | |
5183 | } | |
5184 | ||
5185 | /* Before we invoke realpath, which can get expensive when many | |
5186 | files are involved, do a quick comparison of the basenames. */ | |
5187 | if (!basenames_may_differ | |
5188 | && !file_matcher (lbasename (file_data->file_names[j]), | |
5189 | true)) | |
5190 | continue; | |
5191 | ||
5192 | this_real_name = dw2_get_real_path (objfile, file_data, j); | |
5193 | if (file_matcher (this_real_name, false)) | |
5194 | { | |
5195 | per_cu->v.quick->mark = 1; | |
5196 | break; | |
5197 | } | |
5198 | } | |
5199 | ||
b76e467d SM |
5200 | void **slot = htab_find_slot (per_cu->v.quick->mark |
5201 | ? visited_found.get () | |
5202 | : visited_not_found.get (), | |
5203 | file_data, INSERT); | |
927aa2e7 JK |
5204 | *slot = file_data; |
5205 | } | |
5206 | } | |
5207 | ||
5208 | static void | |
5209 | dw2_expand_symtabs_matching | |
5210 | (struct objfile *objfile, | |
5211 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
5212 | const lookup_name_info &lookup_name, | |
5213 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
5214 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
5215 | enum search_domain kind) | |
5216 | { | |
ed2dc618 SM |
5217 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5218 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5219 | |
5220 | /* index_table is NULL if OBJF_READNOW. */ | |
5221 | if (!dwarf2_per_objfile->index_table) | |
5222 | return; | |
5223 | ||
ed2dc618 | 5224 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
927aa2e7 JK |
5225 | |
5226 | mapped_index &index = *dwarf2_per_objfile->index_table; | |
5227 | ||
5228 | dw2_expand_symtabs_matching_symbol (index, lookup_name, | |
5229 | symbol_matcher, | |
5230 | kind, [&] (offset_type idx) | |
5231 | { | |
ed2dc618 | 5232 | dw2_expand_marked_cus (dwarf2_per_objfile, idx, file_matcher, |
927aa2e7 JK |
5233 | expansion_notify, kind); |
5234 | }); | |
5235 | } | |
5236 | ||
5237 | /* A helper for dw2_find_pc_sect_compunit_symtab which finds the most specific | |
5238 | symtab. */ | |
5239 | ||
5240 | static struct compunit_symtab * | |
5241 | recursively_find_pc_sect_compunit_symtab (struct compunit_symtab *cust, | |
5242 | CORE_ADDR pc) | |
5243 | { | |
5244 | int i; | |
5245 | ||
5246 | if (COMPUNIT_BLOCKVECTOR (cust) != NULL | |
5247 | && blockvector_contains_pc (COMPUNIT_BLOCKVECTOR (cust), pc)) | |
5248 | return cust; | |
5249 | ||
5250 | if (cust->includes == NULL) | |
5251 | return NULL; | |
5252 | ||
5253 | for (i = 0; cust->includes[i]; ++i) | |
5254 | { | |
5255 | struct compunit_symtab *s = cust->includes[i]; | |
5256 | ||
5257 | s = recursively_find_pc_sect_compunit_symtab (s, pc); | |
5258 | if (s != NULL) | |
5259 | return s; | |
5260 | } | |
5261 | ||
5262 | return NULL; | |
5263 | } | |
5264 | ||
5265 | static struct compunit_symtab * | |
5266 | dw2_find_pc_sect_compunit_symtab (struct objfile *objfile, | |
5267 | struct bound_minimal_symbol msymbol, | |
5268 | CORE_ADDR pc, | |
5269 | struct obj_section *section, | |
5270 | int warn_if_readin) | |
5271 | { | |
5272 | struct dwarf2_per_cu_data *data; | |
5273 | struct compunit_symtab *result; | |
5274 | ||
d320c2b5 | 5275 | if (!objfile->partial_symtabs->psymtabs_addrmap) |
927aa2e7 JK |
5276 | return NULL; |
5277 | ||
79748972 TT |
5278 | CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, |
5279 | SECT_OFF_TEXT (objfile)); | |
d320c2b5 TT |
5280 | data = (struct dwarf2_per_cu_data *) addrmap_find |
5281 | (objfile->partial_symtabs->psymtabs_addrmap, pc - baseaddr); | |
927aa2e7 JK |
5282 | if (!data) |
5283 | return NULL; | |
5284 | ||
5285 | if (warn_if_readin && data->v.quick->compunit_symtab) | |
5286 | warning (_("(Internal error: pc %s in read in CU, but not in symtab.)"), | |
5287 | paddress (get_objfile_arch (objfile), pc)); | |
5288 | ||
5289 | result | |
58f0c718 TT |
5290 | = recursively_find_pc_sect_compunit_symtab (dw2_instantiate_symtab (data, |
5291 | false), | |
927aa2e7 JK |
5292 | pc); |
5293 | gdb_assert (result != NULL); | |
5294 | return result; | |
5295 | } | |
5296 | ||
5297 | static void | |
5298 | dw2_map_symbol_filenames (struct objfile *objfile, symbol_filename_ftype *fun, | |
5299 | void *data, int need_fullname) | |
5300 | { | |
ed2dc618 SM |
5301 | struct dwarf2_per_objfile *dwarf2_per_objfile |
5302 | = get_dwarf2_per_objfile (objfile); | |
927aa2e7 JK |
5303 | |
5304 | if (!dwarf2_per_objfile->filenames_cache) | |
5305 | { | |
5306 | dwarf2_per_objfile->filenames_cache.emplace (); | |
5307 | ||
5308 | htab_up visited (htab_create_alloc (10, | |
5309 | htab_hash_pointer, htab_eq_pointer, | |
5310 | NULL, xcalloc, xfree)); | |
5311 | ||
5312 | /* The rule is CUs specify all the files, including those used | |
5313 | by any TU, so there's no need to scan TUs here. We can | |
5314 | ignore file names coming from already-expanded CUs. */ | |
5315 | ||
b76e467d | 5316 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5317 | { |
927aa2e7 JK |
5318 | if (per_cu->v.quick->compunit_symtab) |
5319 | { | |
5320 | void **slot = htab_find_slot (visited.get (), | |
5321 | per_cu->v.quick->file_names, | |
5322 | INSERT); | |
5323 | ||
5324 | *slot = per_cu->v.quick->file_names; | |
5325 | } | |
5326 | } | |
5327 | ||
b76e467d | 5328 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
927aa2e7 | 5329 | { |
927aa2e7 JK |
5330 | /* We only need to look at symtabs not already expanded. */ |
5331 | if (per_cu->v.quick->compunit_symtab) | |
5332 | continue; | |
5333 | ||
b76e467d | 5334 | quick_file_names *file_data = dw2_get_file_names (per_cu); |
927aa2e7 JK |
5335 | if (file_data == NULL) |
5336 | continue; | |
5337 | ||
b76e467d | 5338 | void **slot = htab_find_slot (visited.get (), file_data, INSERT); |
927aa2e7 JK |
5339 | if (*slot) |
5340 | { | |
5341 | /* Already visited. */ | |
5342 | continue; | |
5343 | } | |
5344 | *slot = file_data; | |
5345 | ||
5346 | for (int j = 0; j < file_data->num_file_names; ++j) | |
5347 | { | |
5348 | const char *filename = file_data->file_names[j]; | |
5349 | dwarf2_per_objfile->filenames_cache->seen (filename); | |
5350 | } | |
5351 | } | |
5352 | } | |
5353 | ||
5354 | dwarf2_per_objfile->filenames_cache->traverse ([&] (const char *filename) | |
5355 | { | |
5356 | gdb::unique_xmalloc_ptr<char> this_real_name; | |
5357 | ||
5358 | if (need_fullname) | |
5359 | this_real_name = gdb_realpath (filename); | |
5360 | (*fun) (filename, this_real_name.get (), data); | |
5361 | }); | |
5362 | } | |
5363 | ||
5364 | static int | |
5365 | dw2_has_symbols (struct objfile *objfile) | |
5366 | { | |
5367 | return 1; | |
5368 | } | |
5369 | ||
5370 | const struct quick_symbol_functions dwarf2_gdb_index_functions = | |
5371 | { | |
5372 | dw2_has_symbols, | |
5373 | dw2_find_last_source_symtab, | |
5374 | dw2_forget_cached_source_info, | |
5375 | dw2_map_symtabs_matching_filename, | |
5376 | dw2_lookup_symbol, | |
5377 | dw2_print_stats, | |
5378 | dw2_dump, | |
927aa2e7 JK |
5379 | dw2_expand_symtabs_for_function, |
5380 | dw2_expand_all_symtabs, | |
5381 | dw2_expand_symtabs_with_fullname, | |
5382 | dw2_map_matching_symbols, | |
5383 | dw2_expand_symtabs_matching, | |
5384 | dw2_find_pc_sect_compunit_symtab, | |
5385 | NULL, | |
5386 | dw2_map_symbol_filenames | |
5387 | }; | |
5388 | ||
5389 | /* DWARF-5 debug_names reader. */ | |
5390 | ||
5391 | /* DWARF-5 augmentation string for GDB's DW_IDX_GNU_* extension. */ | |
5392 | static const gdb_byte dwarf5_augmentation[] = { 'G', 'D', 'B', 0 }; | |
5393 | ||
5394 | /* A helper function that reads the .debug_names section in SECTION | |
5395 | and fills in MAP. FILENAME is the name of the file containing the | |
5396 | section; it is used for error reporting. | |
5397 | ||
5398 | Returns true if all went well, false otherwise. */ | |
5399 | ||
5400 | static bool | |
5401 | read_debug_names_from_section (struct objfile *objfile, | |
5402 | const char *filename, | |
5403 | struct dwarf2_section_info *section, | |
5404 | mapped_debug_names &map) | |
5405 | { | |
5406 | if (dwarf2_section_empty_p (section)) | |
5407 | return false; | |
5408 | ||
5409 | /* Older elfutils strip versions could keep the section in the main | |
5410 | executable while splitting it for the separate debug info file. */ | |
5411 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
5412 | return false; | |
5413 | ||
5414 | dwarf2_read_section (objfile, section); | |
5415 | ||
5416 | map.dwarf5_byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
5417 | ||
5418 | const gdb_byte *addr = section->buffer; | |
5419 | ||
5420 | bfd *const abfd = get_section_bfd_owner (section); | |
5421 | ||
5422 | unsigned int bytes_read; | |
5423 | LONGEST length = read_initial_length (abfd, addr, &bytes_read); | |
5424 | addr += bytes_read; | |
5425 | ||
5426 | map.dwarf5_is_dwarf64 = bytes_read != 4; | |
5427 | map.offset_size = map.dwarf5_is_dwarf64 ? 8 : 4; | |
5428 | if (bytes_read + length != section->size) | |
5429 | { | |
5430 | /* There may be multiple per-CU indices. */ | |
5431 | warning (_("Section .debug_names in %s length %s does not match " | |
5432 | "section length %s, ignoring .debug_names."), | |
5433 | filename, plongest (bytes_read + length), | |
5434 | pulongest (section->size)); | |
5435 | return false; | |
5436 | } | |
5437 | ||
5438 | /* The version number. */ | |
5439 | uint16_t version = read_2_bytes (abfd, addr); | |
5440 | addr += 2; | |
5441 | if (version != 5) | |
5442 | { | |
5443 | warning (_("Section .debug_names in %s has unsupported version %d, " | |
5444 | "ignoring .debug_names."), | |
5445 | filename, version); | |
5446 | return false; | |
5447 | } | |
5448 | ||
5449 | /* Padding. */ | |
5450 | uint16_t padding = read_2_bytes (abfd, addr); | |
5451 | addr += 2; | |
5452 | if (padding != 0) | |
5453 | { | |
5454 | warning (_("Section .debug_names in %s has unsupported padding %d, " | |
5455 | "ignoring .debug_names."), | |
5456 | filename, padding); | |
5457 | return false; | |
5458 | } | |
5459 | ||
5460 | /* comp_unit_count - The number of CUs in the CU list. */ | |
5461 | map.cu_count = read_4_bytes (abfd, addr); | |
5462 | addr += 4; | |
5463 | ||
5464 | /* local_type_unit_count - The number of TUs in the local TU | |
5465 | list. */ | |
5466 | map.tu_count = read_4_bytes (abfd, addr); | |
5467 | addr += 4; | |
5468 | ||
5469 | /* foreign_type_unit_count - The number of TUs in the foreign TU | |
5470 | list. */ | |
5471 | uint32_t foreign_tu_count = read_4_bytes (abfd, addr); | |
5472 | addr += 4; | |
5473 | if (foreign_tu_count != 0) | |
5474 | { | |
5475 | warning (_("Section .debug_names in %s has unsupported %lu foreign TUs, " | |
5476 | "ignoring .debug_names."), | |
5477 | filename, static_cast<unsigned long> (foreign_tu_count)); | |
5478 | return false; | |
5479 | } | |
5480 | ||
5481 | /* bucket_count - The number of hash buckets in the hash lookup | |
5482 | table. */ | |
5483 | map.bucket_count = read_4_bytes (abfd, addr); | |
5484 | addr += 4; | |
5485 | ||
5486 | /* name_count - The number of unique names in the index. */ | |
5487 | map.name_count = read_4_bytes (abfd, addr); | |
5488 | addr += 4; | |
5489 | ||
5490 | /* abbrev_table_size - The size in bytes of the abbreviations | |
5491 | table. */ | |
5492 | uint32_t abbrev_table_size = read_4_bytes (abfd, addr); | |
5493 | addr += 4; | |
5494 | ||
5495 | /* augmentation_string_size - The size in bytes of the augmentation | |
5496 | string. This value is rounded up to a multiple of 4. */ | |
5497 | uint32_t augmentation_string_size = read_4_bytes (abfd, addr); | |
5498 | addr += 4; | |
5499 | map.augmentation_is_gdb = ((augmentation_string_size | |
5500 | == sizeof (dwarf5_augmentation)) | |
5501 | && memcmp (addr, dwarf5_augmentation, | |
5502 | sizeof (dwarf5_augmentation)) == 0); | |
5503 | augmentation_string_size += (-augmentation_string_size) & 3; | |
5504 | addr += augmentation_string_size; | |
5505 | ||
5506 | /* List of CUs */ | |
5507 | map.cu_table_reordered = addr; | |
5508 | addr += map.cu_count * map.offset_size; | |
5509 | ||
5510 | /* List of Local TUs */ | |
5511 | map.tu_table_reordered = addr; | |
5512 | addr += map.tu_count * map.offset_size; | |
5513 | ||
5514 | /* Hash Lookup Table */ | |
5515 | map.bucket_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5516 | addr += map.bucket_count * 4; | |
5517 | map.hash_table_reordered = reinterpret_cast<const uint32_t *> (addr); | |
5518 | addr += map.name_count * 4; | |
5519 | ||
5520 | /* Name Table */ | |
5521 | map.name_table_string_offs_reordered = addr; | |
5522 | addr += map.name_count * map.offset_size; | |
5523 | map.name_table_entry_offs_reordered = addr; | |
5524 | addr += map.name_count * map.offset_size; | |
5525 | ||
5526 | const gdb_byte *abbrev_table_start = addr; | |
5527 | for (;;) | |
5528 | { | |
927aa2e7 JK |
5529 | const ULONGEST index_num = read_unsigned_leb128 (abfd, addr, &bytes_read); |
5530 | addr += bytes_read; | |
5531 | if (index_num == 0) | |
5532 | break; | |
5533 | ||
5534 | const auto insertpair | |
5535 | = map.abbrev_map.emplace (index_num, mapped_debug_names::index_val ()); | |
5536 | if (!insertpair.second) | |
5537 | { | |
5538 | warning (_("Section .debug_names in %s has duplicate index %s, " | |
5539 | "ignoring .debug_names."), | |
5540 | filename, pulongest (index_num)); | |
5541 | return false; | |
5542 | } | |
5543 | mapped_debug_names::index_val &indexval = insertpair.first->second; | |
5544 | indexval.dwarf_tag = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5545 | addr += bytes_read; | |
5546 | ||
5547 | for (;;) | |
5548 | { | |
5549 | mapped_debug_names::index_val::attr attr; | |
5550 | attr.dw_idx = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5551 | addr += bytes_read; | |
5552 | attr.form = read_unsigned_leb128 (abfd, addr, &bytes_read); | |
5553 | addr += bytes_read; | |
5554 | if (attr.form == DW_FORM_implicit_const) | |
5555 | { | |
5556 | attr.implicit_const = read_signed_leb128 (abfd, addr, | |
5557 | &bytes_read); | |
5558 | addr += bytes_read; | |
5559 | } | |
5560 | if (attr.dw_idx == 0 && attr.form == 0) | |
5561 | break; | |
5562 | indexval.attr_vec.push_back (std::move (attr)); | |
5563 | } | |
5564 | } | |
5565 | if (addr != abbrev_table_start + abbrev_table_size) | |
5566 | { | |
5567 | warning (_("Section .debug_names in %s has abbreviation_table " | |
5568 | "of size %zu vs. written as %u, ignoring .debug_names."), | |
5569 | filename, addr - abbrev_table_start, abbrev_table_size); | |
5570 | return false; | |
5571 | } | |
5572 | map.entry_pool = addr; | |
5573 | ||
5574 | return true; | |
5575 | } | |
5576 | ||
5577 | /* A helper for create_cus_from_debug_names that handles the MAP's CU | |
5578 | list. */ | |
5579 | ||
5580 | static void | |
ed2dc618 | 5581 | create_cus_from_debug_names_list (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5582 | const mapped_debug_names &map, |
5583 | dwarf2_section_info §ion, | |
b76e467d | 5584 | bool is_dwz) |
927aa2e7 JK |
5585 | { |
5586 | sect_offset sect_off_prev; | |
5587 | for (uint32_t i = 0; i <= map.cu_count; ++i) | |
5588 | { | |
5589 | sect_offset sect_off_next; | |
5590 | if (i < map.cu_count) | |
5591 | { | |
5592 | sect_off_next | |
5593 | = (sect_offset) (extract_unsigned_integer | |
5594 | (map.cu_table_reordered + i * map.offset_size, | |
5595 | map.offset_size, | |
5596 | map.dwarf5_byte_order)); | |
5597 | } | |
5598 | else | |
5599 | sect_off_next = (sect_offset) section.size; | |
5600 | if (i >= 1) | |
5601 | { | |
5602 | const ULONGEST length = sect_off_next - sect_off_prev; | |
b76e467d | 5603 | dwarf2_per_cu_data *per_cu |
ed2dc618 | 5604 | = create_cu_from_index_list (dwarf2_per_objfile, §ion, is_dwz, |
927aa2e7 | 5605 | sect_off_prev, length); |
b76e467d | 5606 | dwarf2_per_objfile->all_comp_units.push_back (per_cu); |
927aa2e7 JK |
5607 | } |
5608 | sect_off_prev = sect_off_next; | |
5609 | } | |
5610 | } | |
5611 | ||
5612 | /* Read the CU list from the mapped index, and use it to create all | |
ed2dc618 | 5613 | the CU objects for this dwarf2_per_objfile. */ |
927aa2e7 JK |
5614 | |
5615 | static void | |
ed2dc618 | 5616 | create_cus_from_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile, |
927aa2e7 JK |
5617 | const mapped_debug_names &map, |
5618 | const mapped_debug_names &dwz_map) | |
5619 | { | |
b76e467d SM |
5620 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
5621 | dwarf2_per_objfile->all_comp_units.reserve (map.cu_count + dwz_map.cu_count); | |
927aa2e7 | 5622 | |
ed2dc618 SM |
5623 | create_cus_from_debug_names_list (dwarf2_per_objfile, map, |
5624 | dwarf2_per_objfile->info, | |
b76e467d | 5625 | false /* is_dwz */); |
927aa2e7 JK |
5626 | |
5627 | if (dwz_map.cu_count == 0) | |
5628 | return; | |
5629 | ||
ed2dc618 SM |
5630 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
5631 | create_cus_from_debug_names_list (dwarf2_per_objfile, dwz_map, dwz->info, | |
b76e467d | 5632 | true /* is_dwz */); |
927aa2e7 JK |
5633 | } |
5634 | ||
5635 | /* Read .debug_names. If everything went ok, initialize the "quick" | |
5636 | elements of all the CUs and return true. Otherwise, return false. */ | |
5637 | ||
5638 | static bool | |
ed2dc618 | 5639 | dwarf2_read_debug_names (struct dwarf2_per_objfile *dwarf2_per_objfile) |
927aa2e7 | 5640 | { |
22ca247e TT |
5641 | std::unique_ptr<mapped_debug_names> map |
5642 | (new mapped_debug_names (dwarf2_per_objfile)); | |
ed2dc618 SM |
5643 | mapped_debug_names dwz_map (dwarf2_per_objfile); |
5644 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
927aa2e7 JK |
5645 | |
5646 | if (!read_debug_names_from_section (objfile, objfile_name (objfile), | |
5647 | &dwarf2_per_objfile->debug_names, | |
22ca247e | 5648 | *map)) |
927aa2e7 JK |
5649 | return false; |
5650 | ||
5651 | /* Don't use the index if it's empty. */ | |
22ca247e | 5652 | if (map->name_count == 0) |
927aa2e7 JK |
5653 | return false; |
5654 | ||
5655 | /* If there is a .dwz file, read it so we can get its CU list as | |
5656 | well. */ | |
ed2dc618 | 5657 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
927aa2e7 JK |
5658 | if (dwz != NULL) |
5659 | { | |
5660 | if (!read_debug_names_from_section (objfile, | |
5661 | bfd_get_filename (dwz->dwz_bfd), | |
5662 | &dwz->debug_names, dwz_map)) | |
5663 | { | |
5664 | warning (_("could not read '.debug_names' section from %s; skipping"), | |
5665 | bfd_get_filename (dwz->dwz_bfd)); | |
5666 | return false; | |
5667 | } | |
5668 | } | |
5669 | ||
22ca247e | 5670 | create_cus_from_debug_names (dwarf2_per_objfile, *map, dwz_map); |
927aa2e7 | 5671 | |
22ca247e | 5672 | if (map->tu_count != 0) |
927aa2e7 JK |
5673 | { |
5674 | /* We can only handle a single .debug_types when we have an | |
5675 | index. */ | |
5676 | if (VEC_length (dwarf2_section_info_def, dwarf2_per_objfile->types) != 1) | |
5677 | return false; | |
5678 | ||
5679 | dwarf2_section_info *section = VEC_index (dwarf2_section_info_def, | |
5680 | dwarf2_per_objfile->types, 0); | |
5681 | ||
5682 | create_signatured_type_table_from_debug_names | |
22ca247e | 5683 | (dwarf2_per_objfile, *map, section, &dwarf2_per_objfile->abbrev); |
927aa2e7 JK |
5684 | } |
5685 | ||
ed2dc618 SM |
5686 | create_addrmap_from_aranges (dwarf2_per_objfile, |
5687 | &dwarf2_per_objfile->debug_aranges); | |
927aa2e7 | 5688 | |
22ca247e | 5689 | dwarf2_per_objfile->debug_names_table = std::move (map); |
927aa2e7 JK |
5690 | dwarf2_per_objfile->using_index = 1; |
5691 | dwarf2_per_objfile->quick_file_names_table = | |
b76e467d | 5692 | create_quick_file_names_table (dwarf2_per_objfile->all_comp_units.size ()); |
927aa2e7 JK |
5693 | |
5694 | return true; | |
5695 | } | |
5696 | ||
927aa2e7 JK |
5697 | /* Type used to manage iterating over all CUs looking for a symbol for |
5698 | .debug_names. */ | |
5699 | ||
5700 | class dw2_debug_names_iterator | |
5701 | { | |
5702 | public: | |
5703 | /* If WANT_SPECIFIC_BLOCK is true, only look for symbols in block | |
5704 | BLOCK_INDEX. Otherwise BLOCK_INDEX is ignored. */ | |
5705 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5706 | bool want_specific_block, | |
5707 | block_enum block_index, domain_enum domain, | |
5708 | const char *name) | |
5709 | : m_map (map), m_want_specific_block (want_specific_block), | |
5710 | m_block_index (block_index), m_domain (domain), | |
5711 | m_addr (find_vec_in_debug_names (map, name)) | |
5712 | {} | |
5713 | ||
5714 | dw2_debug_names_iterator (const mapped_debug_names &map, | |
5715 | search_domain search, uint32_t namei) | |
5716 | : m_map (map), | |
5717 | m_search (search), | |
5718 | m_addr (find_vec_in_debug_names (map, namei)) | |
5719 | {} | |
5720 | ||
5721 | /* Return the next matching CU or NULL if there are no more. */ | |
5722 | dwarf2_per_cu_data *next (); | |
5723 | ||
5724 | private: | |
5725 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5726 | const char *name); | |
5727 | static const gdb_byte *find_vec_in_debug_names (const mapped_debug_names &map, | |
5728 | uint32_t namei); | |
5729 | ||
5730 | /* The internalized form of .debug_names. */ | |
5731 | const mapped_debug_names &m_map; | |
5732 | ||
5733 | /* If true, only look for symbols that match BLOCK_INDEX. */ | |
5734 | const bool m_want_specific_block = false; | |
5735 | ||
5736 | /* One of GLOBAL_BLOCK or STATIC_BLOCK. | |
5737 | Unused if !WANT_SPECIFIC_BLOCK - FIRST_LOCAL_BLOCK is an invalid | |
5738 | value. */ | |
5739 | const block_enum m_block_index = FIRST_LOCAL_BLOCK; | |
5740 | ||
5741 | /* The kind of symbol we're looking for. */ | |
5742 | const domain_enum m_domain = UNDEF_DOMAIN; | |
5743 | const search_domain m_search = ALL_DOMAIN; | |
5744 | ||
5745 | /* The list of CUs from the index entry of the symbol, or NULL if | |
5746 | not found. */ | |
5747 | const gdb_byte *m_addr; | |
5748 | }; | |
5749 | ||
5750 | const char * | |
5751 | mapped_debug_names::namei_to_name (uint32_t namei) const | |
5752 | { | |
5753 | const ULONGEST namei_string_offs | |
5754 | = extract_unsigned_integer ((name_table_string_offs_reordered | |
5755 | + namei * offset_size), | |
5756 | offset_size, | |
5757 | dwarf5_byte_order); | |
5758 | return read_indirect_string_at_offset | |
ed2dc618 | 5759 | (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs); |
927aa2e7 JK |
5760 | } |
5761 | ||
5762 | /* Find a slot in .debug_names for the object named NAME. If NAME is | |
5763 | found, return pointer to its pool data. If NAME cannot be found, | |
5764 | return NULL. */ | |
5765 | ||
5766 | const gdb_byte * | |
5767 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5768 | (const mapped_debug_names &map, const char *name) | |
5769 | { | |
5770 | int (*cmp) (const char *, const char *); | |
5771 | ||
5772 | if (current_language->la_language == language_cplus | |
5773 | || current_language->la_language == language_fortran | |
5774 | || current_language->la_language == language_d) | |
5775 | { | |
5776 | /* NAME is already canonical. Drop any qualifiers as | |
5777 | .debug_names does not contain any. */ | |
5778 | ||
5779 | if (strchr (name, '(') != NULL) | |
5780 | { | |
5781 | gdb::unique_xmalloc_ptr<char> without_params | |
5782 | = cp_remove_params (name); | |
5783 | ||
5784 | if (without_params != NULL) | |
5785 | { | |
5786 | name = without_params.get(); | |
5787 | } | |
5788 | } | |
5789 | } | |
5790 | ||
5791 | cmp = (case_sensitivity == case_sensitive_on ? strcmp : strcasecmp); | |
5792 | ||
5793 | const uint32_t full_hash = dwarf5_djb_hash (name); | |
5794 | uint32_t namei | |
5795 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5796 | (map.bucket_table_reordered | |
5797 | + (full_hash % map.bucket_count)), 4, | |
5798 | map.dwarf5_byte_order); | |
5799 | if (namei == 0) | |
5800 | return NULL; | |
5801 | --namei; | |
5802 | if (namei >= map.name_count) | |
5803 | { | |
b98664d3 | 5804 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5805 | "[in module %s]"), |
5806 | namei, map.name_count, | |
ed2dc618 | 5807 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5808 | return NULL; |
5809 | } | |
5810 | ||
5811 | for (;;) | |
5812 | { | |
5813 | const uint32_t namei_full_hash | |
5814 | = extract_unsigned_integer (reinterpret_cast<const gdb_byte *> | |
5815 | (map.hash_table_reordered + namei), 4, | |
5816 | map.dwarf5_byte_order); | |
5817 | if (full_hash % map.bucket_count != namei_full_hash % map.bucket_count) | |
5818 | return NULL; | |
5819 | ||
5820 | if (full_hash == namei_full_hash) | |
5821 | { | |
5822 | const char *const namei_string = map.namei_to_name (namei); | |
5823 | ||
5824 | #if 0 /* An expensive sanity check. */ | |
5825 | if (namei_full_hash != dwarf5_djb_hash (namei_string)) | |
5826 | { | |
b98664d3 | 5827 | complaint (_("Wrong .debug_names hash for string at index %u " |
927aa2e7 JK |
5828 | "[in module %s]"), |
5829 | namei, objfile_name (dwarf2_per_objfile->objfile)); | |
5830 | return NULL; | |
5831 | } | |
5832 | #endif | |
5833 | ||
5834 | if (cmp (namei_string, name) == 0) | |
5835 | { | |
5836 | const ULONGEST namei_entry_offs | |
5837 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5838 | + namei * map.offset_size), | |
5839 | map.offset_size, map.dwarf5_byte_order); | |
5840 | return map.entry_pool + namei_entry_offs; | |
5841 | } | |
5842 | } | |
5843 | ||
5844 | ++namei; | |
5845 | if (namei >= map.name_count) | |
5846 | return NULL; | |
5847 | } | |
5848 | } | |
5849 | ||
5850 | const gdb_byte * | |
5851 | dw2_debug_names_iterator::find_vec_in_debug_names | |
5852 | (const mapped_debug_names &map, uint32_t namei) | |
5853 | { | |
5854 | if (namei >= map.name_count) | |
5855 | { | |
b98664d3 | 5856 | complaint (_("Wrong .debug_names with name index %u but name_count=%u " |
927aa2e7 JK |
5857 | "[in module %s]"), |
5858 | namei, map.name_count, | |
ed2dc618 | 5859 | objfile_name (map.dwarf2_per_objfile->objfile)); |
927aa2e7 JK |
5860 | return NULL; |
5861 | } | |
5862 | ||
5863 | const ULONGEST namei_entry_offs | |
5864 | = extract_unsigned_integer ((map.name_table_entry_offs_reordered | |
5865 | + namei * map.offset_size), | |
5866 | map.offset_size, map.dwarf5_byte_order); | |
5867 | return map.entry_pool + namei_entry_offs; | |
5868 | } | |
5869 | ||
5870 | /* See dw2_debug_names_iterator. */ | |
5871 | ||
5872 | dwarf2_per_cu_data * | |
5873 | dw2_debug_names_iterator::next () | |
5874 | { | |
5875 | if (m_addr == NULL) | |
5876 | return NULL; | |
5877 | ||
ed2dc618 SM |
5878 | struct dwarf2_per_objfile *dwarf2_per_objfile = m_map.dwarf2_per_objfile; |
5879 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
5880 | bfd *const abfd = objfile->obfd; | |
927aa2e7 JK |
5881 | |
5882 | again: | |
5883 | ||
5884 | unsigned int bytes_read; | |
5885 | const ULONGEST abbrev = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5886 | m_addr += bytes_read; | |
5887 | if (abbrev == 0) | |
5888 | return NULL; | |
5889 | ||
5890 | const auto indexval_it = m_map.abbrev_map.find (abbrev); | |
5891 | if (indexval_it == m_map.abbrev_map.cend ()) | |
5892 | { | |
b98664d3 | 5893 | complaint (_("Wrong .debug_names undefined abbrev code %s " |
927aa2e7 | 5894 | "[in module %s]"), |
ed2dc618 | 5895 | pulongest (abbrev), objfile_name (objfile)); |
927aa2e7 JK |
5896 | return NULL; |
5897 | } | |
5898 | const mapped_debug_names::index_val &indexval = indexval_it->second; | |
5899 | bool have_is_static = false; | |
5900 | bool is_static; | |
5901 | dwarf2_per_cu_data *per_cu = NULL; | |
5902 | for (const mapped_debug_names::index_val::attr &attr : indexval.attr_vec) | |
5903 | { | |
5904 | ULONGEST ull; | |
5905 | switch (attr.form) | |
5906 | { | |
5907 | case DW_FORM_implicit_const: | |
5908 | ull = attr.implicit_const; | |
5909 | break; | |
5910 | case DW_FORM_flag_present: | |
5911 | ull = 1; | |
5912 | break; | |
5913 | case DW_FORM_udata: | |
5914 | ull = read_unsigned_leb128 (abfd, m_addr, &bytes_read); | |
5915 | m_addr += bytes_read; | |
5916 | break; | |
5917 | default: | |
b98664d3 | 5918 | complaint (_("Unsupported .debug_names form %s [in module %s]"), |
927aa2e7 | 5919 | dwarf_form_name (attr.form), |
ed2dc618 | 5920 | objfile_name (objfile)); |
927aa2e7 JK |
5921 | return NULL; |
5922 | } | |
5923 | switch (attr.dw_idx) | |
5924 | { | |
5925 | case DW_IDX_compile_unit: | |
5926 | /* Don't crash on bad data. */ | |
b76e467d | 5927 | if (ull >= dwarf2_per_objfile->all_comp_units.size ()) |
927aa2e7 | 5928 | { |
b98664d3 | 5929 | complaint (_(".debug_names entry has bad CU index %s" |
927aa2e7 JK |
5930 | " [in module %s]"), |
5931 | pulongest (ull), | |
5932 | objfile_name (dwarf2_per_objfile->objfile)); | |
5933 | continue; | |
5934 | } | |
ff4c9fec | 5935 | per_cu = dwarf2_per_objfile->get_cutu (ull); |
927aa2e7 | 5936 | break; |
8af5c486 JK |
5937 | case DW_IDX_type_unit: |
5938 | /* Don't crash on bad data. */ | |
b2bdb8cf | 5939 | if (ull >= dwarf2_per_objfile->all_type_units.size ()) |
8af5c486 | 5940 | { |
b98664d3 | 5941 | complaint (_(".debug_names entry has bad TU index %s" |
8af5c486 JK |
5942 | " [in module %s]"), |
5943 | pulongest (ull), | |
5944 | objfile_name (dwarf2_per_objfile->objfile)); | |
5945 | continue; | |
5946 | } | |
ff4c9fec | 5947 | per_cu = &dwarf2_per_objfile->get_tu (ull)->per_cu; |
8af5c486 | 5948 | break; |
927aa2e7 JK |
5949 | case DW_IDX_GNU_internal: |
5950 | if (!m_map.augmentation_is_gdb) | |
5951 | break; | |
5952 | have_is_static = true; | |
5953 | is_static = true; | |
5954 | break; | |
5955 | case DW_IDX_GNU_external: | |
5956 | if (!m_map.augmentation_is_gdb) | |
5957 | break; | |
5958 | have_is_static = true; | |
5959 | is_static = false; | |
5960 | break; | |
5961 | } | |
5962 | } | |
5963 | ||
5964 | /* Skip if already read in. */ | |
5965 | if (per_cu->v.quick->compunit_symtab) | |
5966 | goto again; | |
5967 | ||
5968 | /* Check static vs global. */ | |
5969 | if (have_is_static) | |
5970 | { | |
5971 | const bool want_static = m_block_index != GLOBAL_BLOCK; | |
5972 | if (m_want_specific_block && want_static != is_static) | |
5973 | goto again; | |
5974 | } | |
5975 | ||
5976 | /* Match dw2_symtab_iter_next, symbol_kind | |
5977 | and debug_names::psymbol_tag. */ | |
5978 | switch (m_domain) | |
5979 | { | |
5980 | case VAR_DOMAIN: | |
5981 | switch (indexval.dwarf_tag) | |
5982 | { | |
5983 | case DW_TAG_variable: | |
5984 | case DW_TAG_subprogram: | |
5985 | /* Some types are also in VAR_DOMAIN. */ | |
5986 | case DW_TAG_typedef: | |
5987 | case DW_TAG_structure_type: | |
5988 | break; | |
5989 | default: | |
5990 | goto again; | |
5991 | } | |
5992 | break; | |
5993 | case STRUCT_DOMAIN: | |
5994 | switch (indexval.dwarf_tag) | |
5995 | { | |
5996 | case DW_TAG_typedef: | |
5997 | case DW_TAG_structure_type: | |
5998 | break; | |
5999 | default: | |
6000 | goto again; | |
6001 | } | |
6002 | break; | |
6003 | case LABEL_DOMAIN: | |
6004 | switch (indexval.dwarf_tag) | |
6005 | { | |
6006 | case 0: | |
6007 | case DW_TAG_variable: | |
6008 | break; | |
6009 | default: | |
6010 | goto again; | |
6011 | } | |
6012 | break; | |
6013 | default: | |
6014 | break; | |
6015 | } | |
6016 | ||
6017 | /* Match dw2_expand_symtabs_matching, symbol_kind and | |
6018 | debug_names::psymbol_tag. */ | |
6019 | switch (m_search) | |
4b514bc8 | 6020 | { |
927aa2e7 JK |
6021 | case VARIABLES_DOMAIN: |
6022 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6023 | { |
927aa2e7 JK |
6024 | case DW_TAG_variable: |
6025 | break; | |
6026 | default: | |
6027 | goto again; | |
4b514bc8 | 6028 | } |
927aa2e7 JK |
6029 | break; |
6030 | case FUNCTIONS_DOMAIN: | |
6031 | switch (indexval.dwarf_tag) | |
4b514bc8 | 6032 | { |
927aa2e7 JK |
6033 | case DW_TAG_subprogram: |
6034 | break; | |
6035 | default: | |
6036 | goto again; | |
4b514bc8 | 6037 | } |
927aa2e7 JK |
6038 | break; |
6039 | case TYPES_DOMAIN: | |
6040 | switch (indexval.dwarf_tag) | |
6041 | { | |
6042 | case DW_TAG_typedef: | |
6043 | case DW_TAG_structure_type: | |
6044 | break; | |
6045 | default: | |
6046 | goto again; | |
6047 | } | |
6048 | break; | |
6049 | default: | |
6050 | break; | |
4b514bc8 | 6051 | } |
927aa2e7 JK |
6052 | |
6053 | return per_cu; | |
4b514bc8 | 6054 | } |
61920122 | 6055 | |
927aa2e7 JK |
6056 | static struct compunit_symtab * |
6057 | dw2_debug_names_lookup_symbol (struct objfile *objfile, int block_index_int, | |
6058 | const char *name, domain_enum domain) | |
4b514bc8 | 6059 | { |
927aa2e7 | 6060 | const block_enum block_index = static_cast<block_enum> (block_index_int); |
ed2dc618 SM |
6061 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6062 | = get_dwarf2_per_objfile (objfile); | |
61920122 | 6063 | |
927aa2e7 JK |
6064 | const auto &mapp = dwarf2_per_objfile->debug_names_table; |
6065 | if (!mapp) | |
61920122 | 6066 | { |
927aa2e7 JK |
6067 | /* index is NULL if OBJF_READNOW. */ |
6068 | return NULL; | |
6069 | } | |
6070 | const auto &map = *mapp; | |
9291a0cd | 6071 | |
927aa2e7 JK |
6072 | dw2_debug_names_iterator iter (map, true /* want_specific_block */, |
6073 | block_index, domain, name); | |
9703b513 | 6074 | |
927aa2e7 JK |
6075 | struct compunit_symtab *stab_best = NULL; |
6076 | struct dwarf2_per_cu_data *per_cu; | |
6077 | while ((per_cu = iter.next ()) != NULL) | |
6078 | { | |
6079 | struct symbol *sym, *with_opaque = NULL; | |
58f0c718 | 6080 | struct compunit_symtab *stab = dw2_instantiate_symtab (per_cu, false); |
927aa2e7 | 6081 | const struct blockvector *bv = COMPUNIT_BLOCKVECTOR (stab); |
582942f4 | 6082 | const struct block *block = BLOCKVECTOR_BLOCK (bv, block_index); |
9703b513 | 6083 | |
927aa2e7 JK |
6084 | sym = block_find_symbol (block, name, domain, |
6085 | block_find_non_opaque_type_preferred, | |
6086 | &with_opaque); | |
9703b513 | 6087 | |
927aa2e7 JK |
6088 | /* Some caution must be observed with overloaded functions and |
6089 | methods, since the index will not contain any overload | |
6090 | information (but NAME might contain it). */ | |
a3ec0bb1 | 6091 | |
927aa2e7 JK |
6092 | if (sym != NULL |
6093 | && strcmp_iw (SYMBOL_SEARCH_NAME (sym), name) == 0) | |
6094 | return stab; | |
6095 | if (with_opaque != NULL | |
6096 | && strcmp_iw (SYMBOL_SEARCH_NAME (with_opaque), name) == 0) | |
6097 | stab_best = stab; | |
9703b513 | 6098 | |
927aa2e7 | 6099 | /* Keep looking through other CUs. */ |
9703b513 TT |
6100 | } |
6101 | ||
927aa2e7 | 6102 | return stab_best; |
9703b513 TT |
6103 | } |
6104 | ||
927aa2e7 JK |
6105 | /* This dumps minimal information about .debug_names. It is called |
6106 | via "mt print objfiles". The gdb.dwarf2/gdb-index.exp testcase | |
6107 | uses this to verify that .debug_names has been loaded. */ | |
9291a0cd | 6108 | |
927aa2e7 JK |
6109 | static void |
6110 | dw2_debug_names_dump (struct objfile *objfile) | |
6111 | { | |
ed2dc618 SM |
6112 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6113 | = get_dwarf2_per_objfile (objfile); | |
6114 | ||
927aa2e7 JK |
6115 | gdb_assert (dwarf2_per_objfile->using_index); |
6116 | printf_filtered (".debug_names:"); | |
6117 | if (dwarf2_per_objfile->debug_names_table) | |
6118 | printf_filtered (" exists\n"); | |
6119 | else | |
6120 | printf_filtered (" faked for \"readnow\"\n"); | |
6121 | printf_filtered ("\n"); | |
9291a0cd TT |
6122 | } |
6123 | ||
9291a0cd | 6124 | static void |
927aa2e7 JK |
6125 | dw2_debug_names_expand_symtabs_for_function (struct objfile *objfile, |
6126 | const char *func_name) | |
9291a0cd | 6127 | { |
ed2dc618 SM |
6128 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6129 | = get_dwarf2_per_objfile (objfile); | |
ae2de4f8 | 6130 | |
927aa2e7 JK |
6131 | /* dwarf2_per_objfile->debug_names_table is NULL if OBJF_READNOW. */ |
6132 | if (dwarf2_per_objfile->debug_names_table) | |
24c79950 | 6133 | { |
927aa2e7 | 6134 | const mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
24c79950 | 6135 | |
927aa2e7 JK |
6136 | /* Note: It doesn't matter what we pass for block_index here. */ |
6137 | dw2_debug_names_iterator iter (map, false /* want_specific_block */, | |
6138 | GLOBAL_BLOCK, VAR_DOMAIN, func_name); | |
24c79950 | 6139 | |
927aa2e7 JK |
6140 | struct dwarf2_per_cu_data *per_cu; |
6141 | while ((per_cu = iter.next ()) != NULL) | |
58f0c718 | 6142 | dw2_instantiate_symtab (per_cu, false); |
927aa2e7 JK |
6143 | } |
6144 | } | |
24c79950 | 6145 | |
927aa2e7 JK |
6146 | static void |
6147 | dw2_debug_names_expand_symtabs_matching | |
6148 | (struct objfile *objfile, | |
6149 | gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
6150 | const lookup_name_info &lookup_name, | |
6151 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, | |
6152 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
6153 | enum search_domain kind) | |
6154 | { | |
ed2dc618 SM |
6155 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6156 | = get_dwarf2_per_objfile (objfile); | |
9291a0cd | 6157 | |
927aa2e7 JK |
6158 | /* debug_names_table is NULL if OBJF_READNOW. */ |
6159 | if (!dwarf2_per_objfile->debug_names_table) | |
6160 | return; | |
9291a0cd | 6161 | |
ed2dc618 | 6162 | dw_expand_symtabs_matching_file_matcher (dwarf2_per_objfile, file_matcher); |
24c79950 | 6163 | |
44ed8f3e | 6164 | mapped_debug_names &map = *dwarf2_per_objfile->debug_names_table; |
bbf2f4df | 6165 | |
44ed8f3e PA |
6166 | dw2_expand_symtabs_matching_symbol (map, lookup_name, |
6167 | symbol_matcher, | |
6168 | kind, [&] (offset_type namei) | |
927aa2e7 | 6169 | { |
927aa2e7 JK |
6170 | /* The name was matched, now expand corresponding CUs that were |
6171 | marked. */ | |
6172 | dw2_debug_names_iterator iter (map, kind, namei); | |
bbf2f4df | 6173 | |
927aa2e7 JK |
6174 | struct dwarf2_per_cu_data *per_cu; |
6175 | while ((per_cu = iter.next ()) != NULL) | |
6176 | dw2_expand_symtabs_matching_one (per_cu, file_matcher, | |
6177 | expansion_notify); | |
44ed8f3e | 6178 | }); |
9291a0cd TT |
6179 | } |
6180 | ||
927aa2e7 | 6181 | const struct quick_symbol_functions dwarf2_debug_names_functions = |
9291a0cd TT |
6182 | { |
6183 | dw2_has_symbols, | |
6184 | dw2_find_last_source_symtab, | |
6185 | dw2_forget_cached_source_info, | |
f8eba3c6 | 6186 | dw2_map_symtabs_matching_filename, |
927aa2e7 | 6187 | dw2_debug_names_lookup_symbol, |
9291a0cd | 6188 | dw2_print_stats, |
927aa2e7 | 6189 | dw2_debug_names_dump, |
927aa2e7 | 6190 | dw2_debug_names_expand_symtabs_for_function, |
9291a0cd | 6191 | dw2_expand_all_symtabs, |
652a8996 | 6192 | dw2_expand_symtabs_with_fullname, |
40658b94 | 6193 | dw2_map_matching_symbols, |
927aa2e7 | 6194 | dw2_debug_names_expand_symtabs_matching, |
43f3e411 | 6195 | dw2_find_pc_sect_compunit_symtab, |
71a3c369 | 6196 | NULL, |
9291a0cd TT |
6197 | dw2_map_symbol_filenames |
6198 | }; | |
6199 | ||
4485a1c1 SM |
6200 | /* Get the content of the .gdb_index section of OBJ. SECTION_OWNER should point |
6201 | to either a dwarf2_per_objfile or dwz_file object. */ | |
6202 | ||
6203 | template <typename T> | |
6204 | static gdb::array_view<const gdb_byte> | |
6205 | get_gdb_index_contents_from_section (objfile *obj, T *section_owner) | |
6206 | { | |
6207 | dwarf2_section_info *section = §ion_owner->gdb_index; | |
6208 | ||
6209 | if (dwarf2_section_empty_p (section)) | |
6210 | return {}; | |
6211 | ||
6212 | /* Older elfutils strip versions could keep the section in the main | |
6213 | executable while splitting it for the separate debug info file. */ | |
6214 | if ((get_section_flags (section) & SEC_HAS_CONTENTS) == 0) | |
6215 | return {}; | |
6216 | ||
6217 | dwarf2_read_section (obj, section); | |
6218 | ||
8bebfcda PA |
6219 | /* dwarf2_section_info::size is a bfd_size_type, while |
6220 | gdb::array_view works with size_t. On 32-bit hosts, with | |
6221 | --enable-64-bit-bfd, bfd_size_type is a 64-bit type, while size_t | |
6222 | is 32-bit. So we need an explicit narrowing conversion here. | |
6223 | This is fine, because it's impossible to allocate or mmap an | |
6224 | array/buffer larger than what size_t can represent. */ | |
6225 | return gdb::make_array_view (section->buffer, section->size); | |
4485a1c1 SM |
6226 | } |
6227 | ||
87d6a7aa SM |
6228 | /* Lookup the index cache for the contents of the index associated to |
6229 | DWARF2_OBJ. */ | |
6230 | ||
6231 | static gdb::array_view<const gdb_byte> | |
6232 | get_gdb_index_contents_from_cache (objfile *obj, dwarf2_per_objfile *dwarf2_obj) | |
6233 | { | |
6234 | const bfd_build_id *build_id = build_id_bfd_get (obj->obfd); | |
6235 | if (build_id == nullptr) | |
6236 | return {}; | |
6237 | ||
6238 | return global_index_cache.lookup_gdb_index (build_id, | |
6239 | &dwarf2_obj->index_cache_res); | |
6240 | } | |
6241 | ||
6242 | /* Same as the above, but for DWZ. */ | |
6243 | ||
6244 | static gdb::array_view<const gdb_byte> | |
6245 | get_gdb_index_contents_from_cache_dwz (objfile *obj, dwz_file *dwz) | |
6246 | { | |
6247 | const bfd_build_id *build_id = build_id_bfd_get (dwz->dwz_bfd.get ()); | |
6248 | if (build_id == nullptr) | |
6249 | return {}; | |
6250 | ||
6251 | return global_index_cache.lookup_gdb_index (build_id, &dwz->index_cache_res); | |
6252 | } | |
6253 | ||
3c0aa29a | 6254 | /* See symfile.h. */ |
9291a0cd | 6255 | |
3c0aa29a PA |
6256 | bool |
6257 | dwarf2_initialize_objfile (struct objfile *objfile, dw_index_kind *index_kind) | |
9291a0cd | 6258 | { |
ed2dc618 SM |
6259 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6260 | = get_dwarf2_per_objfile (objfile); | |
6261 | ||
9291a0cd TT |
6262 | /* If we're about to read full symbols, don't bother with the |
6263 | indices. In this case we also don't care if some other debug | |
6264 | format is making psymtabs, because they are all about to be | |
6265 | expanded anyway. */ | |
6266 | if ((objfile->flags & OBJF_READNOW)) | |
6267 | { | |
9291a0cd | 6268 | dwarf2_per_objfile->using_index = 1; |
ed2dc618 SM |
6269 | create_all_comp_units (dwarf2_per_objfile); |
6270 | create_all_type_units (dwarf2_per_objfile); | |
b76e467d SM |
6271 | dwarf2_per_objfile->quick_file_names_table |
6272 | = create_quick_file_names_table | |
6273 | (dwarf2_per_objfile->all_comp_units.size ()); | |
9291a0cd | 6274 | |
b76e467d | 6275 | for (int i = 0; i < (dwarf2_per_objfile->all_comp_units.size () |
b2bdb8cf | 6276 | + dwarf2_per_objfile->all_type_units.size ()); ++i) |
9291a0cd | 6277 | { |
ff4c9fec | 6278 | dwarf2_per_cu_data *per_cu = dwarf2_per_objfile->get_cutu (i); |
9291a0cd | 6279 | |
e254ef6a DE |
6280 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6281 | struct dwarf2_per_cu_quick_data); | |
9291a0cd TT |
6282 | } |
6283 | ||
6284 | /* Return 1 so that gdb sees the "quick" functions. However, | |
6285 | these functions will be no-ops because we will have expanded | |
6286 | all symtabs. */ | |
3c0aa29a PA |
6287 | *index_kind = dw_index_kind::GDB_INDEX; |
6288 | return true; | |
9291a0cd TT |
6289 | } |
6290 | ||
ed2dc618 | 6291 | if (dwarf2_read_debug_names (dwarf2_per_objfile)) |
3c0aa29a PA |
6292 | { |
6293 | *index_kind = dw_index_kind::DEBUG_NAMES; | |
6294 | return true; | |
6295 | } | |
927aa2e7 | 6296 | |
4485a1c1 SM |
6297 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, |
6298 | get_gdb_index_contents_from_section<struct dwarf2_per_objfile>, | |
6299 | get_gdb_index_contents_from_section<dwz_file>)) | |
3c0aa29a PA |
6300 | { |
6301 | *index_kind = dw_index_kind::GDB_INDEX; | |
6302 | return true; | |
6303 | } | |
9291a0cd | 6304 | |
87d6a7aa SM |
6305 | /* ... otherwise, try to find the index in the index cache. */ |
6306 | if (dwarf2_read_gdb_index (dwarf2_per_objfile, | |
6307 | get_gdb_index_contents_from_cache, | |
6308 | get_gdb_index_contents_from_cache_dwz)) | |
6309 | { | |
6310 | global_index_cache.hit (); | |
6311 | *index_kind = dw_index_kind::GDB_INDEX; | |
6312 | return true; | |
6313 | } | |
6314 | ||
6315 | global_index_cache.miss (); | |
3c0aa29a | 6316 | return false; |
9291a0cd TT |
6317 | } |
6318 | ||
6319 | \f | |
6320 | ||
dce234bc PP |
6321 | /* Build a partial symbol table. */ |
6322 | ||
6323 | void | |
f29dff0a | 6324 | dwarf2_build_psymtabs (struct objfile *objfile) |
dce234bc | 6325 | { |
ed2dc618 SM |
6326 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6327 | = get_dwarf2_per_objfile (objfile); | |
c9bf0622 | 6328 | |
6eee24ce | 6329 | init_psymbol_list (objfile, 1024); |
c906108c | 6330 | |
a70b8144 | 6331 | try |
c9bf0622 TT |
6332 | { |
6333 | /* This isn't really ideal: all the data we allocate on the | |
6334 | objfile's obstack is still uselessly kept around. However, | |
6335 | freeing it seems unsafe. */ | |
906768f9 | 6336 | psymtab_discarder psymtabs (objfile); |
ed2dc618 | 6337 | dwarf2_build_psymtabs_hard (dwarf2_per_objfile); |
906768f9 | 6338 | psymtabs.keep (); |
87d6a7aa SM |
6339 | |
6340 | /* (maybe) store an index in the cache. */ | |
6341 | global_index_cache.store (dwarf2_per_objfile); | |
c9bf0622 | 6342 | } |
230d2906 | 6343 | catch (const gdb_exception_error &except) |
492d29ea PA |
6344 | { |
6345 | exception_print (gdb_stderr, except); | |
6346 | } | |
c906108c | 6347 | } |
c906108c | 6348 | |
1ce1cefd DE |
6349 | /* Return the total length of the CU described by HEADER. */ |
6350 | ||
6351 | static unsigned int | |
6352 | get_cu_length (const struct comp_unit_head *header) | |
6353 | { | |
6354 | return header->initial_length_size + header->length; | |
6355 | } | |
6356 | ||
9c541725 | 6357 | /* Return TRUE if SECT_OFF is within CU_HEADER. */ |
45452591 | 6358 | |
9c541725 PA |
6359 | static inline bool |
6360 | offset_in_cu_p (const comp_unit_head *cu_header, sect_offset sect_off) | |
45452591 | 6361 | { |
9c541725 PA |
6362 | sect_offset bottom = cu_header->sect_off; |
6363 | sect_offset top = cu_header->sect_off + get_cu_length (cu_header); | |
9a619af0 | 6364 | |
9c541725 | 6365 | return sect_off >= bottom && sect_off < top; |
45452591 DE |
6366 | } |
6367 | ||
3b80fe9b DE |
6368 | /* Find the base address of the compilation unit for range lists and |
6369 | location lists. It will normally be specified by DW_AT_low_pc. | |
6370 | In DWARF-3 draft 4, the base address could be overridden by | |
6371 | DW_AT_entry_pc. It's been removed, but GCC still uses this for | |
6372 | compilation units with discontinuous ranges. */ | |
6373 | ||
6374 | static void | |
6375 | dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu) | |
6376 | { | |
6377 | struct attribute *attr; | |
6378 | ||
6379 | cu->base_known = 0; | |
6380 | cu->base_address = 0; | |
6381 | ||
6382 | attr = dwarf2_attr (die, DW_AT_entry_pc, cu); | |
6383 | if (attr) | |
6384 | { | |
31aa7e4e | 6385 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6386 | cu->base_known = 1; |
6387 | } | |
6388 | else | |
6389 | { | |
6390 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
6391 | if (attr) | |
6392 | { | |
31aa7e4e | 6393 | cu->base_address = attr_value_as_address (attr); |
3b80fe9b DE |
6394 | cu->base_known = 1; |
6395 | } | |
6396 | } | |
6397 | } | |
6398 | ||
93311388 | 6399 | /* Read in the comp unit header information from the debug_info at info_ptr. |
43988095 | 6400 | Use rcuh_kind::COMPILE as the default type if not known by the caller. |
93311388 DE |
6401 | NOTE: This leaves members offset, first_die_offset to be filled in |
6402 | by the caller. */ | |
107d2387 | 6403 | |
d521ce57 | 6404 | static const gdb_byte * |
107d2387 | 6405 | read_comp_unit_head (struct comp_unit_head *cu_header, |
43988095 JK |
6406 | const gdb_byte *info_ptr, |
6407 | struct dwarf2_section_info *section, | |
6408 | rcuh_kind section_kind) | |
107d2387 AC |
6409 | { |
6410 | int signed_addr; | |
891d2f0b | 6411 | unsigned int bytes_read; |
43988095 JK |
6412 | const char *filename = get_section_file_name (section); |
6413 | bfd *abfd = get_section_bfd_owner (section); | |
c764a876 DE |
6414 | |
6415 | cu_header->length = read_initial_length (abfd, info_ptr, &bytes_read); | |
6416 | cu_header->initial_length_size = bytes_read; | |
6417 | cu_header->offset_size = (bytes_read == 4) ? 4 : 8; | |
613e1657 | 6418 | info_ptr += bytes_read; |
107d2387 | 6419 | cu_header->version = read_2_bytes (abfd, info_ptr); |
1ea5da02 TV |
6420 | if (cu_header->version < 2 || cu_header->version > 5) |
6421 | error (_("Dwarf Error: wrong version in compilation unit header " | |
6422 | "(is %d, should be 2, 3, 4 or 5) [in module %s]"), | |
6423 | cu_header->version, filename); | |
107d2387 | 6424 | info_ptr += 2; |
43988095 JK |
6425 | if (cu_header->version < 5) |
6426 | switch (section_kind) | |
6427 | { | |
6428 | case rcuh_kind::COMPILE: | |
6429 | cu_header->unit_type = DW_UT_compile; | |
6430 | break; | |
6431 | case rcuh_kind::TYPE: | |
6432 | cu_header->unit_type = DW_UT_type; | |
6433 | break; | |
6434 | default: | |
6435 | internal_error (__FILE__, __LINE__, | |
6436 | _("read_comp_unit_head: invalid section_kind")); | |
6437 | } | |
6438 | else | |
6439 | { | |
6440 | cu_header->unit_type = static_cast<enum dwarf_unit_type> | |
6441 | (read_1_byte (abfd, info_ptr)); | |
6442 | info_ptr += 1; | |
6443 | switch (cu_header->unit_type) | |
6444 | { | |
6445 | case DW_UT_compile: | |
6446 | if (section_kind != rcuh_kind::COMPILE) | |
6447 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6448 | "(is DW_UT_compile, should be DW_UT_type) [in module %s]"), | |
6449 | filename); | |
6450 | break; | |
6451 | case DW_UT_type: | |
6452 | section_kind = rcuh_kind::TYPE; | |
6453 | break; | |
6454 | default: | |
6455 | error (_("Dwarf Error: wrong unit_type in compilation unit header " | |
6456 | "(is %d, should be %d or %d) [in module %s]"), | |
6457 | cu_header->unit_type, DW_UT_compile, DW_UT_type, filename); | |
6458 | } | |
6459 | ||
6460 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6461 | info_ptr += 1; | |
6462 | } | |
9c541725 PA |
6463 | cu_header->abbrev_sect_off = (sect_offset) read_offset (abfd, info_ptr, |
6464 | cu_header, | |
6465 | &bytes_read); | |
613e1657 | 6466 | info_ptr += bytes_read; |
43988095 JK |
6467 | if (cu_header->version < 5) |
6468 | { | |
6469 | cu_header->addr_size = read_1_byte (abfd, info_ptr); | |
6470 | info_ptr += 1; | |
6471 | } | |
107d2387 AC |
6472 | signed_addr = bfd_get_sign_extend_vma (abfd); |
6473 | if (signed_addr < 0) | |
8e65ff28 | 6474 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 6475 | _("read_comp_unit_head: dwarf from non elf file")); |
107d2387 | 6476 | cu_header->signed_addr_p = signed_addr; |
c764a876 | 6477 | |
43988095 JK |
6478 | if (section_kind == rcuh_kind::TYPE) |
6479 | { | |
6480 | LONGEST type_offset; | |
6481 | ||
6482 | cu_header->signature = read_8_bytes (abfd, info_ptr); | |
6483 | info_ptr += 8; | |
6484 | ||
6485 | type_offset = read_offset (abfd, info_ptr, cu_header, &bytes_read); | |
6486 | info_ptr += bytes_read; | |
9c541725 PA |
6487 | cu_header->type_cu_offset_in_tu = (cu_offset) type_offset; |
6488 | if (to_underlying (cu_header->type_cu_offset_in_tu) != type_offset) | |
43988095 JK |
6489 | error (_("Dwarf Error: Too big type_offset in compilation unit " |
6490 | "header (is %s) [in module %s]"), plongest (type_offset), | |
6491 | filename); | |
6492 | } | |
6493 | ||
107d2387 AC |
6494 | return info_ptr; |
6495 | } | |
6496 | ||
36586728 TT |
6497 | /* Helper function that returns the proper abbrev section for |
6498 | THIS_CU. */ | |
6499 | ||
6500 | static struct dwarf2_section_info * | |
6501 | get_abbrev_section_for_cu (struct dwarf2_per_cu_data *this_cu) | |
6502 | { | |
6503 | struct dwarf2_section_info *abbrev; | |
ed2dc618 | 6504 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
36586728 TT |
6505 | |
6506 | if (this_cu->is_dwz) | |
ed2dc618 | 6507 | abbrev = &dwarf2_get_dwz_file (dwarf2_per_objfile)->abbrev; |
36586728 TT |
6508 | else |
6509 | abbrev = &dwarf2_per_objfile->abbrev; | |
6510 | ||
6511 | return abbrev; | |
6512 | } | |
6513 | ||
9ff913ba DE |
6514 | /* Subroutine of read_and_check_comp_unit_head and |
6515 | read_and_check_type_unit_head to simplify them. | |
6516 | Perform various error checking on the header. */ | |
6517 | ||
6518 | static void | |
ed2dc618 SM |
6519 | error_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6520 | struct comp_unit_head *header, | |
4bdcc0c1 DE |
6521 | struct dwarf2_section_info *section, |
6522 | struct dwarf2_section_info *abbrev_section) | |
9ff913ba | 6523 | { |
a32a8923 | 6524 | const char *filename = get_section_file_name (section); |
9ff913ba | 6525 | |
9c541725 | 6526 | if (to_underlying (header->abbrev_sect_off) |
36586728 | 6527 | >= dwarf2_section_size (dwarf2_per_objfile->objfile, abbrev_section)) |
9d8780f0 SM |
6528 | error (_("Dwarf Error: bad offset (%s) in compilation unit header " |
6529 | "(offset %s + 6) [in module %s]"), | |
6530 | sect_offset_str (header->abbrev_sect_off), | |
6531 | sect_offset_str (header->sect_off), | |
9ff913ba DE |
6532 | filename); |
6533 | ||
9c541725 | 6534 | /* Cast to ULONGEST to use 64-bit arithmetic when possible to |
9ff913ba | 6535 | avoid potential 32-bit overflow. */ |
9c541725 | 6536 | if (((ULONGEST) header->sect_off + get_cu_length (header)) |
9ff913ba | 6537 | > section->size) |
9c541725 | 6538 | error (_("Dwarf Error: bad length (0x%x) in compilation unit header " |
9d8780f0 SM |
6539 | "(offset %s + 0) [in module %s]"), |
6540 | header->length, sect_offset_str (header->sect_off), | |
9ff913ba DE |
6541 | filename); |
6542 | } | |
6543 | ||
6544 | /* Read in a CU/TU header and perform some basic error checking. | |
6545 | The contents of the header are stored in HEADER. | |
6546 | The result is a pointer to the start of the first DIE. */ | |
adabb602 | 6547 | |
d521ce57 | 6548 | static const gdb_byte * |
ed2dc618 SM |
6549 | read_and_check_comp_unit_head (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6550 | struct comp_unit_head *header, | |
9ff913ba | 6551 | struct dwarf2_section_info *section, |
4bdcc0c1 | 6552 | struct dwarf2_section_info *abbrev_section, |
d521ce57 | 6553 | const gdb_byte *info_ptr, |
43988095 | 6554 | rcuh_kind section_kind) |
72bf9492 | 6555 | { |
d521ce57 | 6556 | const gdb_byte *beg_of_comp_unit = info_ptr; |
72bf9492 | 6557 | |
9c541725 | 6558 | header->sect_off = (sect_offset) (beg_of_comp_unit - section->buffer); |
adabb602 | 6559 | |
43988095 | 6560 | info_ptr = read_comp_unit_head (header, info_ptr, section, section_kind); |
9ff913ba | 6561 | |
9c541725 | 6562 | header->first_die_cu_offset = (cu_offset) (info_ptr - beg_of_comp_unit); |
348e048f | 6563 | |
ed2dc618 SM |
6564 | error_check_comp_unit_head (dwarf2_per_objfile, header, section, |
6565 | abbrev_section); | |
9ff913ba DE |
6566 | |
6567 | return info_ptr; | |
348e048f DE |
6568 | } |
6569 | ||
f4dc4d17 DE |
6570 | /* Fetch the abbreviation table offset from a comp or type unit header. */ |
6571 | ||
6572 | static sect_offset | |
ed2dc618 SM |
6573 | read_abbrev_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6574 | struct dwarf2_section_info *section, | |
9c541725 | 6575 | sect_offset sect_off) |
f4dc4d17 | 6576 | { |
a32a8923 | 6577 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 6578 | const gdb_byte *info_ptr; |
ac298888 | 6579 | unsigned int initial_length_size, offset_size; |
43988095 | 6580 | uint16_t version; |
f4dc4d17 DE |
6581 | |
6582 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
9c541725 | 6583 | info_ptr = section->buffer + to_underlying (sect_off); |
ac298888 | 6584 | read_initial_length (abfd, info_ptr, &initial_length_size); |
f4dc4d17 | 6585 | offset_size = initial_length_size == 4 ? 4 : 8; |
43988095 JK |
6586 | info_ptr += initial_length_size; |
6587 | ||
6588 | version = read_2_bytes (abfd, info_ptr); | |
6589 | info_ptr += 2; | |
6590 | if (version >= 5) | |
6591 | { | |
6592 | /* Skip unit type and address size. */ | |
6593 | info_ptr += 2; | |
6594 | } | |
6595 | ||
9c541725 | 6596 | return (sect_offset) read_offset_1 (abfd, info_ptr, offset_size); |
f4dc4d17 DE |
6597 | } |
6598 | ||
aaa75496 JB |
6599 | /* Allocate a new partial symtab for file named NAME and mark this new |
6600 | partial symtab as being an include of PST. */ | |
6601 | ||
6602 | static void | |
d521ce57 | 6603 | dwarf2_create_include_psymtab (const char *name, struct partial_symtab *pst, |
aaa75496 JB |
6604 | struct objfile *objfile) |
6605 | { | |
6606 | struct partial_symtab *subpst = allocate_psymtab (name, objfile); | |
6607 | ||
fbd9ab74 JK |
6608 | if (!IS_ABSOLUTE_PATH (subpst->filename)) |
6609 | { | |
6610 | /* It shares objfile->objfile_obstack. */ | |
6611 | subpst->dirname = pst->dirname; | |
6612 | } | |
6613 | ||
a9342b62 | 6614 | subpst->dependencies = objfile->partial_symtabs->allocate_dependencies (1); |
aaa75496 JB |
6615 | subpst->dependencies[0] = pst; |
6616 | subpst->number_of_dependencies = 1; | |
6617 | ||
aaa75496 | 6618 | subpst->read_symtab = pst->read_symtab; |
aaa75496 JB |
6619 | |
6620 | /* No private part is necessary for include psymtabs. This property | |
6621 | can be used to differentiate between such include psymtabs and | |
10b3939b | 6622 | the regular ones. */ |
58a9656e | 6623 | subpst->read_symtab_private = NULL; |
aaa75496 JB |
6624 | } |
6625 | ||
6626 | /* Read the Line Number Program data and extract the list of files | |
6627 | included by the source file represented by PST. Build an include | |
d85a05f0 | 6628 | partial symtab for each of these included files. */ |
aaa75496 JB |
6629 | |
6630 | static void | |
6631 | dwarf2_build_include_psymtabs (struct dwarf2_cu *cu, | |
dee91e82 DE |
6632 | struct die_info *die, |
6633 | struct partial_symtab *pst) | |
aaa75496 | 6634 | { |
fff8551c | 6635 | line_header_up lh; |
d85a05f0 | 6636 | struct attribute *attr; |
aaa75496 | 6637 | |
d85a05f0 DJ |
6638 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
6639 | if (attr) | |
9c541725 | 6640 | lh = dwarf_decode_line_header ((sect_offset) DW_UNSND (attr), cu); |
aaa75496 JB |
6641 | if (lh == NULL) |
6642 | return; /* No linetable, so no includes. */ | |
6643 | ||
79748972 TT |
6644 | /* NOTE: pst->dirname is DW_AT_comp_dir (if present). Also note |
6645 | that we pass in the raw text_low here; that is ok because we're | |
6646 | only decoding the line table to make include partial symtabs, and | |
6647 | so the addresses aren't really used. */ | |
4ae976d1 | 6648 | dwarf_decode_lines (lh.get (), pst->dirname, cu, pst, |
79748972 | 6649 | pst->raw_text_low (), 1); |
aaa75496 JB |
6650 | } |
6651 | ||
348e048f | 6652 | static hashval_t |
52dc124a | 6653 | hash_signatured_type (const void *item) |
348e048f | 6654 | { |
9a3c8263 SM |
6655 | const struct signatured_type *sig_type |
6656 | = (const struct signatured_type *) item; | |
9a619af0 | 6657 | |
348e048f | 6658 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
52dc124a | 6659 | return sig_type->signature; |
348e048f DE |
6660 | } |
6661 | ||
6662 | static int | |
52dc124a | 6663 | eq_signatured_type (const void *item_lhs, const void *item_rhs) |
348e048f | 6664 | { |
9a3c8263 SM |
6665 | const struct signatured_type *lhs = (const struct signatured_type *) item_lhs; |
6666 | const struct signatured_type *rhs = (const struct signatured_type *) item_rhs; | |
9a619af0 | 6667 | |
348e048f DE |
6668 | return lhs->signature == rhs->signature; |
6669 | } | |
6670 | ||
1fd400ff TT |
6671 | /* Allocate a hash table for signatured types. */ |
6672 | ||
6673 | static htab_t | |
673bfd45 | 6674 | allocate_signatured_type_table (struct objfile *objfile) |
1fd400ff TT |
6675 | { |
6676 | return htab_create_alloc_ex (41, | |
52dc124a DE |
6677 | hash_signatured_type, |
6678 | eq_signatured_type, | |
1fd400ff TT |
6679 | NULL, |
6680 | &objfile->objfile_obstack, | |
6681 | hashtab_obstack_allocate, | |
6682 | dummy_obstack_deallocate); | |
6683 | } | |
6684 | ||
d467dd73 | 6685 | /* A helper function to add a signatured type CU to a table. */ |
1fd400ff TT |
6686 | |
6687 | static int | |
d467dd73 | 6688 | add_signatured_type_cu_to_table (void **slot, void *datum) |
1fd400ff | 6689 | { |
9a3c8263 | 6690 | struct signatured_type *sigt = (struct signatured_type *) *slot; |
b2bdb8cf SM |
6691 | std::vector<signatured_type *> *all_type_units |
6692 | = (std::vector<signatured_type *> *) datum; | |
1fd400ff | 6693 | |
b2bdb8cf | 6694 | all_type_units->push_back (sigt); |
1fd400ff TT |
6695 | |
6696 | return 1; | |
6697 | } | |
6698 | ||
78d4d2c5 | 6699 | /* A helper for create_debug_types_hash_table. Read types from SECTION |
43988095 JK |
6700 | and fill them into TYPES_HTAB. It will process only type units, |
6701 | therefore DW_UT_type. */ | |
c88ee1f0 | 6702 | |
78d4d2c5 | 6703 | static void |
ed2dc618 SM |
6704 | create_debug_type_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6705 | struct dwo_file *dwo_file, | |
43988095 JK |
6706 | dwarf2_section_info *section, htab_t &types_htab, |
6707 | rcuh_kind section_kind) | |
348e048f | 6708 | { |
3019eac3 | 6709 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
4bdcc0c1 | 6710 | struct dwarf2_section_info *abbrev_section; |
78d4d2c5 JK |
6711 | bfd *abfd; |
6712 | const gdb_byte *info_ptr, *end_ptr; | |
348e048f | 6713 | |
4bdcc0c1 DE |
6714 | abbrev_section = (dwo_file != NULL |
6715 | ? &dwo_file->sections.abbrev | |
6716 | : &dwarf2_per_objfile->abbrev); | |
6717 | ||
b4f54984 | 6718 | if (dwarf_read_debug) |
43988095 JK |
6719 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", |
6720 | get_section_name (section), | |
a32a8923 | 6721 | get_section_file_name (abbrev_section)); |
09406207 | 6722 | |
78d4d2c5 JK |
6723 | dwarf2_read_section (objfile, section); |
6724 | info_ptr = section->buffer; | |
348e048f | 6725 | |
78d4d2c5 JK |
6726 | if (info_ptr == NULL) |
6727 | return; | |
348e048f | 6728 | |
78d4d2c5 JK |
6729 | /* We can't set abfd until now because the section may be empty or |
6730 | not present, in which case the bfd is unknown. */ | |
6731 | abfd = get_section_bfd_owner (section); | |
348e048f | 6732 | |
78d4d2c5 JK |
6733 | /* We don't use init_cutu_and_read_dies_simple, or some such, here |
6734 | because we don't need to read any dies: the signature is in the | |
6735 | header. */ | |
3019eac3 | 6736 | |
78d4d2c5 JK |
6737 | end_ptr = info_ptr + section->size; |
6738 | while (info_ptr < end_ptr) | |
6739 | { | |
78d4d2c5 JK |
6740 | struct signatured_type *sig_type; |
6741 | struct dwo_unit *dwo_tu; | |
6742 | void **slot; | |
6743 | const gdb_byte *ptr = info_ptr; | |
6744 | struct comp_unit_head header; | |
6745 | unsigned int length; | |
8b70b953 | 6746 | |
9c541725 | 6747 | sect_offset sect_off = (sect_offset) (ptr - section->buffer); |
348e048f | 6748 | |
a49dd8dd JK |
6749 | /* Initialize it due to a false compiler warning. */ |
6750 | header.signature = -1; | |
9c541725 | 6751 | header.type_cu_offset_in_tu = (cu_offset) -1; |
a49dd8dd | 6752 | |
78d4d2c5 JK |
6753 | /* We need to read the type's signature in order to build the hash |
6754 | table, but we don't need anything else just yet. */ | |
348e048f | 6755 | |
ed2dc618 | 6756 | ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, &header, section, |
43988095 | 6757 | abbrev_section, ptr, section_kind); |
348e048f | 6758 | |
78d4d2c5 | 6759 | length = get_cu_length (&header); |
6caca83c | 6760 | |
78d4d2c5 JK |
6761 | /* Skip dummy type units. */ |
6762 | if (ptr >= info_ptr + length | |
43988095 JK |
6763 | || peek_abbrev_code (abfd, ptr) == 0 |
6764 | || header.unit_type != DW_UT_type) | |
78d4d2c5 JK |
6765 | { |
6766 | info_ptr += length; | |
6767 | continue; | |
6768 | } | |
dee91e82 | 6769 | |
78d4d2c5 JK |
6770 | if (types_htab == NULL) |
6771 | { | |
6772 | if (dwo_file) | |
6773 | types_htab = allocate_dwo_unit_table (objfile); | |
6774 | else | |
6775 | types_htab = allocate_signatured_type_table (objfile); | |
6776 | } | |
8b70b953 | 6777 | |
78d4d2c5 JK |
6778 | if (dwo_file) |
6779 | { | |
6780 | sig_type = NULL; | |
6781 | dwo_tu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6782 | struct dwo_unit); | |
6783 | dwo_tu->dwo_file = dwo_file; | |
43988095 | 6784 | dwo_tu->signature = header.signature; |
9c541725 | 6785 | dwo_tu->type_offset_in_tu = header.type_cu_offset_in_tu; |
78d4d2c5 | 6786 | dwo_tu->section = section; |
9c541725 | 6787 | dwo_tu->sect_off = sect_off; |
78d4d2c5 JK |
6788 | dwo_tu->length = length; |
6789 | } | |
6790 | else | |
6791 | { | |
6792 | /* N.B.: type_offset is not usable if this type uses a DWO file. | |
6793 | The real type_offset is in the DWO file. */ | |
6794 | dwo_tu = NULL; | |
6795 | sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6796 | struct signatured_type); | |
43988095 | 6797 | sig_type->signature = header.signature; |
9c541725 | 6798 | sig_type->type_offset_in_tu = header.type_cu_offset_in_tu; |
e3b94546 | 6799 | sig_type->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
78d4d2c5 JK |
6800 | sig_type->per_cu.is_debug_types = 1; |
6801 | sig_type->per_cu.section = section; | |
9c541725 | 6802 | sig_type->per_cu.sect_off = sect_off; |
78d4d2c5 JK |
6803 | sig_type->per_cu.length = length; |
6804 | } | |
6805 | ||
6806 | slot = htab_find_slot (types_htab, | |
6807 | dwo_file ? (void*) dwo_tu : (void *) sig_type, | |
6808 | INSERT); | |
6809 | gdb_assert (slot != NULL); | |
6810 | if (*slot != NULL) | |
6811 | { | |
9c541725 | 6812 | sect_offset dup_sect_off; |
0349ea22 | 6813 | |
3019eac3 DE |
6814 | if (dwo_file) |
6815 | { | |
78d4d2c5 JK |
6816 | const struct dwo_unit *dup_tu |
6817 | = (const struct dwo_unit *) *slot; | |
6818 | ||
9c541725 | 6819 | dup_sect_off = dup_tu->sect_off; |
3019eac3 DE |
6820 | } |
6821 | else | |
6822 | { | |
78d4d2c5 JK |
6823 | const struct signatured_type *dup_tu |
6824 | = (const struct signatured_type *) *slot; | |
6825 | ||
9c541725 | 6826 | dup_sect_off = dup_tu->per_cu.sect_off; |
3019eac3 | 6827 | } |
8b70b953 | 6828 | |
b98664d3 | 6829 | complaint (_("debug type entry at offset %s is duplicate to" |
9d8780f0 SM |
6830 | " the entry at offset %s, signature %s"), |
6831 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
43988095 | 6832 | hex_string (header.signature)); |
78d4d2c5 JK |
6833 | } |
6834 | *slot = dwo_file ? (void *) dwo_tu : (void *) sig_type; | |
3019eac3 | 6835 | |
78d4d2c5 | 6836 | if (dwarf_read_debug > 1) |
9d8780f0 SM |
6837 | fprintf_unfiltered (gdb_stdlog, " offset %s, signature %s\n", |
6838 | sect_offset_str (sect_off), | |
43988095 | 6839 | hex_string (header.signature)); |
3019eac3 | 6840 | |
78d4d2c5 JK |
6841 | info_ptr += length; |
6842 | } | |
6843 | } | |
3019eac3 | 6844 | |
78d4d2c5 JK |
6845 | /* Create the hash table of all entries in the .debug_types |
6846 | (or .debug_types.dwo) section(s). | |
6847 | If reading a DWO file, then DWO_FILE is a pointer to the DWO file object, | |
6848 | otherwise it is NULL. | |
b3c8eb43 | 6849 | |
78d4d2c5 | 6850 | The result is a pointer to the hash table or NULL if there are no types. |
348e048f | 6851 | |
78d4d2c5 | 6852 | Note: This function processes DWO files only, not DWP files. */ |
348e048f | 6853 | |
78d4d2c5 | 6854 | static void |
ed2dc618 SM |
6855 | create_debug_types_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
6856 | struct dwo_file *dwo_file, | |
78d4d2c5 JK |
6857 | VEC (dwarf2_section_info_def) *types, |
6858 | htab_t &types_htab) | |
6859 | { | |
6860 | int ix; | |
6861 | struct dwarf2_section_info *section; | |
6862 | ||
6863 | if (VEC_empty (dwarf2_section_info_def, types)) | |
6864 | return; | |
348e048f | 6865 | |
78d4d2c5 JK |
6866 | for (ix = 0; |
6867 | VEC_iterate (dwarf2_section_info_def, types, ix, section); | |
6868 | ++ix) | |
ed2dc618 SM |
6869 | create_debug_type_hash_table (dwarf2_per_objfile, dwo_file, section, |
6870 | types_htab, rcuh_kind::TYPE); | |
3019eac3 DE |
6871 | } |
6872 | ||
6873 | /* Create the hash table of all entries in the .debug_types section, | |
6874 | and initialize all_type_units. | |
6875 | The result is zero if there is an error (e.g. missing .debug_types section), | |
6876 | otherwise non-zero. */ | |
6877 | ||
6878 | static int | |
ed2dc618 | 6879 | create_all_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
3019eac3 | 6880 | { |
78d4d2c5 | 6881 | htab_t types_htab = NULL; |
3019eac3 | 6882 | |
ed2dc618 SM |
6883 | create_debug_type_hash_table (dwarf2_per_objfile, NULL, |
6884 | &dwarf2_per_objfile->info, types_htab, | |
43988095 | 6885 | rcuh_kind::COMPILE); |
ed2dc618 SM |
6886 | create_debug_types_hash_table (dwarf2_per_objfile, NULL, |
6887 | dwarf2_per_objfile->types, types_htab); | |
3019eac3 DE |
6888 | if (types_htab == NULL) |
6889 | { | |
6890 | dwarf2_per_objfile->signatured_types = NULL; | |
6891 | return 0; | |
6892 | } | |
6893 | ||
348e048f DE |
6894 | dwarf2_per_objfile->signatured_types = types_htab; |
6895 | ||
b2bdb8cf SM |
6896 | gdb_assert (dwarf2_per_objfile->all_type_units.empty ()); |
6897 | dwarf2_per_objfile->all_type_units.reserve (htab_elements (types_htab)); | |
6898 | ||
6899 | htab_traverse_noresize (types_htab, add_signatured_type_cu_to_table, | |
6900 | &dwarf2_per_objfile->all_type_units); | |
1fd400ff | 6901 | |
348e048f DE |
6902 | return 1; |
6903 | } | |
6904 | ||
6aa5f3a6 DE |
6905 | /* Add an entry for signature SIG to dwarf2_per_objfile->signatured_types. |
6906 | If SLOT is non-NULL, it is the entry to use in the hash table. | |
6907 | Otherwise we find one. */ | |
6908 | ||
6909 | static struct signatured_type * | |
ed2dc618 SM |
6910 | add_type_unit (struct dwarf2_per_objfile *dwarf2_per_objfile, ULONGEST sig, |
6911 | void **slot) | |
6aa5f3a6 DE |
6912 | { |
6913 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
6aa5f3a6 | 6914 | |
b2bdb8cf SM |
6915 | if (dwarf2_per_objfile->all_type_units.size () |
6916 | == dwarf2_per_objfile->all_type_units.capacity ()) | |
6917 | ++dwarf2_per_objfile->tu_stats.nr_all_type_units_reallocs; | |
6aa5f3a6 | 6918 | |
b2bdb8cf SM |
6919 | signatured_type *sig_type = OBSTACK_ZALLOC (&objfile->objfile_obstack, |
6920 | struct signatured_type); | |
6921 | ||
6922 | dwarf2_per_objfile->all_type_units.push_back (sig_type); | |
6aa5f3a6 DE |
6923 | sig_type->signature = sig; |
6924 | sig_type->per_cu.is_debug_types = 1; | |
6925 | if (dwarf2_per_objfile->using_index) | |
6926 | { | |
6927 | sig_type->per_cu.v.quick = | |
6928 | OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
6929 | struct dwarf2_per_cu_quick_data); | |
6930 | } | |
6931 | ||
6932 | if (slot == NULL) | |
6933 | { | |
6934 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
6935 | sig_type, INSERT); | |
6936 | } | |
6937 | gdb_assert (*slot == NULL); | |
6938 | *slot = sig_type; | |
6939 | /* The rest of sig_type must be filled in by the caller. */ | |
6940 | return sig_type; | |
6941 | } | |
6942 | ||
a2ce51a0 DE |
6943 | /* Subroutine of lookup_dwo_signatured_type and lookup_dwp_signatured_type. |
6944 | Fill in SIG_ENTRY with DWO_ENTRY. */ | |
6945 | ||
6946 | static void | |
ed2dc618 | 6947 | fill_in_sig_entry_from_dwo_entry (struct dwarf2_per_objfile *dwarf2_per_objfile, |
a2ce51a0 DE |
6948 | struct signatured_type *sig_entry, |
6949 | struct dwo_unit *dwo_entry) | |
6950 | { | |
7ee85ab1 | 6951 | /* Make sure we're not clobbering something we don't expect to. */ |
a2ce51a0 DE |
6952 | gdb_assert (! sig_entry->per_cu.queued); |
6953 | gdb_assert (sig_entry->per_cu.cu == NULL); | |
6aa5f3a6 DE |
6954 | if (dwarf2_per_objfile->using_index) |
6955 | { | |
6956 | gdb_assert (sig_entry->per_cu.v.quick != NULL); | |
43f3e411 | 6957 | gdb_assert (sig_entry->per_cu.v.quick->compunit_symtab == NULL); |
6aa5f3a6 DE |
6958 | } |
6959 | else | |
6960 | gdb_assert (sig_entry->per_cu.v.psymtab == NULL); | |
a2ce51a0 | 6961 | gdb_assert (sig_entry->signature == dwo_entry->signature); |
9c541725 | 6962 | gdb_assert (to_underlying (sig_entry->type_offset_in_section) == 0); |
a2ce51a0 | 6963 | gdb_assert (sig_entry->type_unit_group == NULL); |
7ee85ab1 DE |
6964 | gdb_assert (sig_entry->dwo_unit == NULL); |
6965 | ||
6966 | sig_entry->per_cu.section = dwo_entry->section; | |
9c541725 | 6967 | sig_entry->per_cu.sect_off = dwo_entry->sect_off; |
7ee85ab1 DE |
6968 | sig_entry->per_cu.length = dwo_entry->length; |
6969 | sig_entry->per_cu.reading_dwo_directly = 1; | |
e3b94546 | 6970 | sig_entry->per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
a2ce51a0 DE |
6971 | sig_entry->type_offset_in_tu = dwo_entry->type_offset_in_tu; |
6972 | sig_entry->dwo_unit = dwo_entry; | |
6973 | } | |
6974 | ||
6975 | /* Subroutine of lookup_signatured_type. | |
7ee85ab1 DE |
6976 | If we haven't read the TU yet, create the signatured_type data structure |
6977 | for a TU to be read in directly from a DWO file, bypassing the stub. | |
6978 | This is the "Stay in DWO Optimization": When there is no DWP file and we're | |
6979 | using .gdb_index, then when reading a CU we want to stay in the DWO file | |
6980 | containing that CU. Otherwise we could end up reading several other DWO | |
6981 | files (due to comdat folding) to process the transitive closure of all the | |
6982 | mentioned TUs, and that can be slow. The current DWO file will have every | |
6983 | type signature that it needs. | |
a2ce51a0 DE |
6984 | We only do this for .gdb_index because in the psymtab case we already have |
6985 | to read all the DWOs to build the type unit groups. */ | |
6986 | ||
6987 | static struct signatured_type * | |
6988 | lookup_dwo_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
6989 | { | |
518817b3 SM |
6990 | struct dwarf2_per_objfile *dwarf2_per_objfile |
6991 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 DE |
6992 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
6993 | struct dwo_file *dwo_file; | |
6994 | struct dwo_unit find_dwo_entry, *dwo_entry; | |
6995 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 6996 | void **slot; |
a2ce51a0 DE |
6997 | |
6998 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
6999 | ||
6aa5f3a6 DE |
7000 | /* If TU skeletons have been removed then we may not have read in any |
7001 | TUs yet. */ | |
7002 | if (dwarf2_per_objfile->signatured_types == NULL) | |
7003 | { | |
7004 | dwarf2_per_objfile->signatured_types | |
7005 | = allocate_signatured_type_table (objfile); | |
7006 | } | |
a2ce51a0 DE |
7007 | |
7008 | /* We only ever need to read in one copy of a signatured type. | |
6aa5f3a6 DE |
7009 | Use the global signatured_types array to do our own comdat-folding |
7010 | of types. If this is the first time we're reading this TU, and | |
7011 | the TU has an entry in .gdb_index, replace the recorded data from | |
7012 | .gdb_index with this TU. */ | |
a2ce51a0 | 7013 | |
a2ce51a0 | 7014 | find_sig_entry.signature = sig; |
6aa5f3a6 DE |
7015 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, |
7016 | &find_sig_entry, INSERT); | |
9a3c8263 | 7017 | sig_entry = (struct signatured_type *) *slot; |
7ee85ab1 DE |
7018 | |
7019 | /* We can get here with the TU already read, *or* in the process of being | |
6aa5f3a6 DE |
7020 | read. Don't reassign the global entry to point to this DWO if that's |
7021 | the case. Also note that if the TU is already being read, it may not | |
7022 | have come from a DWO, the program may be a mix of Fission-compiled | |
7023 | code and non-Fission-compiled code. */ | |
7024 | ||
7025 | /* Have we already tried to read this TU? | |
7026 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7027 | needn't exist in the global table yet). */ | |
7028 | if (sig_entry != NULL && sig_entry->per_cu.tu_read) | |
a2ce51a0 DE |
7029 | return sig_entry; |
7030 | ||
6aa5f3a6 DE |
7031 | /* Note: cu->dwo_unit is the dwo_unit that references this TU, not the |
7032 | dwo_unit of the TU itself. */ | |
7033 | dwo_file = cu->dwo_unit->dwo_file; | |
7034 | ||
a2ce51a0 DE |
7035 | /* Ok, this is the first time we're reading this TU. */ |
7036 | if (dwo_file->tus == NULL) | |
7037 | return NULL; | |
7038 | find_dwo_entry.signature = sig; | |
9a3c8263 | 7039 | dwo_entry = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_entry); |
a2ce51a0 DE |
7040 | if (dwo_entry == NULL) |
7041 | return NULL; | |
7042 | ||
6aa5f3a6 DE |
7043 | /* If the global table doesn't have an entry for this TU, add one. */ |
7044 | if (sig_entry == NULL) | |
ed2dc618 | 7045 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
6aa5f3a6 | 7046 | |
ed2dc618 | 7047 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); |
89e63ee4 | 7048 | sig_entry->per_cu.tu_read = 1; |
a2ce51a0 DE |
7049 | return sig_entry; |
7050 | } | |
7051 | ||
a2ce51a0 DE |
7052 | /* Subroutine of lookup_signatured_type. |
7053 | Look up the type for signature SIG, and if we can't find SIG in .gdb_index | |
6aa5f3a6 DE |
7054 | then try the DWP file. If the TU stub (skeleton) has been removed then |
7055 | it won't be in .gdb_index. */ | |
a2ce51a0 DE |
7056 | |
7057 | static struct signatured_type * | |
7058 | lookup_dwp_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) | |
7059 | { | |
518817b3 SM |
7060 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7061 | = cu->per_cu->dwarf2_per_objfile; | |
a2ce51a0 | 7062 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
ed2dc618 | 7063 | struct dwp_file *dwp_file = get_dwp_file (dwarf2_per_objfile); |
a2ce51a0 DE |
7064 | struct dwo_unit *dwo_entry; |
7065 | struct signatured_type find_sig_entry, *sig_entry; | |
6aa5f3a6 | 7066 | void **slot; |
a2ce51a0 DE |
7067 | |
7068 | gdb_assert (cu->dwo_unit && dwarf2_per_objfile->using_index); | |
7069 | gdb_assert (dwp_file != NULL); | |
7070 | ||
6aa5f3a6 DE |
7071 | /* If TU skeletons have been removed then we may not have read in any |
7072 | TUs yet. */ | |
7073 | if (dwarf2_per_objfile->signatured_types == NULL) | |
a2ce51a0 | 7074 | { |
6aa5f3a6 DE |
7075 | dwarf2_per_objfile->signatured_types |
7076 | = allocate_signatured_type_table (objfile); | |
a2ce51a0 DE |
7077 | } |
7078 | ||
6aa5f3a6 DE |
7079 | find_sig_entry.signature = sig; |
7080 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, | |
7081 | &find_sig_entry, INSERT); | |
9a3c8263 | 7082 | sig_entry = (struct signatured_type *) *slot; |
6aa5f3a6 DE |
7083 | |
7084 | /* Have we already tried to read this TU? | |
7085 | Note: sig_entry can be NULL if the skeleton TU was removed (thus it | |
7086 | needn't exist in the global table yet). */ | |
7087 | if (sig_entry != NULL) | |
7088 | return sig_entry; | |
7089 | ||
a2ce51a0 DE |
7090 | if (dwp_file->tus == NULL) |
7091 | return NULL; | |
ed2dc618 | 7092 | dwo_entry = lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, NULL, |
57d63ce2 | 7093 | sig, 1 /* is_debug_types */); |
a2ce51a0 DE |
7094 | if (dwo_entry == NULL) |
7095 | return NULL; | |
7096 | ||
ed2dc618 SM |
7097 | sig_entry = add_type_unit (dwarf2_per_objfile, sig, slot); |
7098 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, sig_entry, dwo_entry); | |
a2ce51a0 | 7099 | |
a2ce51a0 DE |
7100 | return sig_entry; |
7101 | } | |
7102 | ||
380bca97 | 7103 | /* Lookup a signature based type for DW_FORM_ref_sig8. |
5a8b3f62 DE |
7104 | Returns NULL if signature SIG is not present in the table. |
7105 | It is up to the caller to complain about this. */ | |
348e048f DE |
7106 | |
7107 | static struct signatured_type * | |
a2ce51a0 | 7108 | lookup_signatured_type (struct dwarf2_cu *cu, ULONGEST sig) |
348e048f | 7109 | { |
518817b3 SM |
7110 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7111 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 7112 | |
a2ce51a0 DE |
7113 | if (cu->dwo_unit |
7114 | && dwarf2_per_objfile->using_index) | |
7115 | { | |
7116 | /* We're in a DWO/DWP file, and we're using .gdb_index. | |
7117 | These cases require special processing. */ | |
ed2dc618 | 7118 | if (get_dwp_file (dwarf2_per_objfile) == NULL) |
a2ce51a0 DE |
7119 | return lookup_dwo_signatured_type (cu, sig); |
7120 | else | |
7121 | return lookup_dwp_signatured_type (cu, sig); | |
7122 | } | |
7123 | else | |
7124 | { | |
7125 | struct signatured_type find_entry, *entry; | |
348e048f | 7126 | |
a2ce51a0 DE |
7127 | if (dwarf2_per_objfile->signatured_types == NULL) |
7128 | return NULL; | |
7129 | find_entry.signature = sig; | |
9a3c8263 SM |
7130 | entry = ((struct signatured_type *) |
7131 | htab_find (dwarf2_per_objfile->signatured_types, &find_entry)); | |
a2ce51a0 DE |
7132 | return entry; |
7133 | } | |
348e048f | 7134 | } |
42e7ad6c DE |
7135 | \f |
7136 | /* Low level DIE reading support. */ | |
348e048f | 7137 | |
d85a05f0 DJ |
7138 | /* Initialize a die_reader_specs struct from a dwarf2_cu struct. */ |
7139 | ||
7140 | static void | |
7141 | init_cu_die_reader (struct die_reader_specs *reader, | |
dee91e82 | 7142 | struct dwarf2_cu *cu, |
3019eac3 | 7143 | struct dwarf2_section_info *section, |
685af9cd TT |
7144 | struct dwo_file *dwo_file, |
7145 | struct abbrev_table *abbrev_table) | |
d85a05f0 | 7146 | { |
fceca515 | 7147 | gdb_assert (section->readin && section->buffer != NULL); |
a32a8923 | 7148 | reader->abfd = get_section_bfd_owner (section); |
d85a05f0 | 7149 | reader->cu = cu; |
3019eac3 | 7150 | reader->dwo_file = dwo_file; |
dee91e82 DE |
7151 | reader->die_section = section; |
7152 | reader->buffer = section->buffer; | |
f664829e | 7153 | reader->buffer_end = section->buffer + section->size; |
a2ce51a0 | 7154 | reader->comp_dir = NULL; |
685af9cd | 7155 | reader->abbrev_table = abbrev_table; |
d85a05f0 DJ |
7156 | } |
7157 | ||
b0c7bfa9 DE |
7158 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
7159 | Read in the rest of a CU/TU top level DIE from DWO_UNIT. | |
7160 | There's just a lot of work to do, and init_cutu_and_read_dies is big enough | |
7161 | already. | |
7162 | ||
7163 | STUB_COMP_UNIT_DIE is for the stub DIE, we copy over certain attributes | |
7164 | from it to the DIE in the DWO. If NULL we are skipping the stub. | |
a2ce51a0 DE |
7165 | STUB_COMP_DIR is similar to STUB_COMP_UNIT_DIE: When reading a TU directly |
7166 | from the DWO file, bypassing the stub, it contains the DW_AT_comp_dir | |
c54a1dd8 DE |
7167 | attribute of the referencing CU. At most one of STUB_COMP_UNIT_DIE and |
7168 | STUB_COMP_DIR may be non-NULL. | |
b0c7bfa9 DE |
7169 | *RESULT_READER,*RESULT_INFO_PTR,*RESULT_COMP_UNIT_DIE,*RESULT_HAS_CHILDREN |
7170 | are filled in with the info of the DIE from the DWO file. | |
685af9cd TT |
7171 | *RESULT_DWO_ABBREV_TABLE will be filled in with the abbrev table allocated |
7172 | from the dwo. Since *RESULT_READER references this abbrev table, it must be | |
7173 | kept around for at least as long as *RESULT_READER. | |
7174 | ||
b0c7bfa9 DE |
7175 | The result is non-zero if a valid (non-dummy) DIE was found. */ |
7176 | ||
7177 | static int | |
7178 | read_cutu_die_from_dwo (struct dwarf2_per_cu_data *this_cu, | |
7179 | struct dwo_unit *dwo_unit, | |
b0c7bfa9 | 7180 | struct die_info *stub_comp_unit_die, |
a2ce51a0 | 7181 | const char *stub_comp_dir, |
b0c7bfa9 | 7182 | struct die_reader_specs *result_reader, |
d521ce57 | 7183 | const gdb_byte **result_info_ptr, |
b0c7bfa9 | 7184 | struct die_info **result_comp_unit_die, |
685af9cd TT |
7185 | int *result_has_children, |
7186 | abbrev_table_up *result_dwo_abbrev_table) | |
b0c7bfa9 | 7187 | { |
ed2dc618 | 7188 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
b0c7bfa9 DE |
7189 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
7190 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 | 7191 | bfd *abfd; |
d521ce57 | 7192 | const gdb_byte *begin_info_ptr, *info_ptr; |
b0c7bfa9 DE |
7193 | struct attribute *comp_dir, *stmt_list, *low_pc, *high_pc, *ranges; |
7194 | int i,num_extra_attrs; | |
7195 | struct dwarf2_section_info *dwo_abbrev_section; | |
7196 | struct attribute *attr; | |
7197 | struct die_info *comp_unit_die; | |
7198 | ||
b0aeadb3 DE |
7199 | /* At most one of these may be provided. */ |
7200 | gdb_assert ((stub_comp_unit_die != NULL) + (stub_comp_dir != NULL) <= 1); | |
a2ce51a0 | 7201 | |
b0c7bfa9 DE |
7202 | /* These attributes aren't processed until later: |
7203 | DW_AT_stmt_list, DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges. | |
0d60c288 DE |
7204 | DW_AT_comp_dir is used now, to find the DWO file, but it is also |
7205 | referenced later. However, these attributes are found in the stub | |
7206 | which we won't have later. In order to not impose this complication | |
7207 | on the rest of the code, we read them here and copy them to the | |
7208 | DWO CU/TU die. */ | |
b0c7bfa9 DE |
7209 | |
7210 | stmt_list = NULL; | |
7211 | low_pc = NULL; | |
7212 | high_pc = NULL; | |
7213 | ranges = NULL; | |
7214 | comp_dir = NULL; | |
7215 | ||
7216 | if (stub_comp_unit_die != NULL) | |
7217 | { | |
7218 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
7219 | DWO file. */ | |
7220 | if (! this_cu->is_debug_types) | |
7221 | stmt_list = dwarf2_attr (stub_comp_unit_die, DW_AT_stmt_list, cu); | |
7222 | low_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_low_pc, cu); | |
7223 | high_pc = dwarf2_attr (stub_comp_unit_die, DW_AT_high_pc, cu); | |
7224 | ranges = dwarf2_attr (stub_comp_unit_die, DW_AT_ranges, cu); | |
7225 | comp_dir = dwarf2_attr (stub_comp_unit_die, DW_AT_comp_dir, cu); | |
7226 | ||
7227 | /* There should be a DW_AT_addr_base attribute here (if needed). | |
336d760d AT |
7228 | We need the value before we can process DW_FORM_GNU_addr_index |
7229 | or DW_FORM_addrx. */ | |
b0c7bfa9 DE |
7230 | cu->addr_base = 0; |
7231 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_addr_base, cu); | |
7232 | if (attr) | |
7233 | cu->addr_base = DW_UNSND (attr); | |
7234 | ||
7235 | /* There should be a DW_AT_ranges_base attribute here (if needed). | |
7236 | We need the value before we can process DW_AT_ranges. */ | |
7237 | cu->ranges_base = 0; | |
7238 | attr = dwarf2_attr (stub_comp_unit_die, DW_AT_GNU_ranges_base, cu); | |
7239 | if (attr) | |
7240 | cu->ranges_base = DW_UNSND (attr); | |
7241 | } | |
a2ce51a0 DE |
7242 | else if (stub_comp_dir != NULL) |
7243 | { | |
7244 | /* Reconstruct the comp_dir attribute to simplify the code below. */ | |
8d749320 | 7245 | comp_dir = XOBNEW (&cu->comp_unit_obstack, struct attribute); |
a2ce51a0 DE |
7246 | comp_dir->name = DW_AT_comp_dir; |
7247 | comp_dir->form = DW_FORM_string; | |
7248 | DW_STRING_IS_CANONICAL (comp_dir) = 0; | |
7249 | DW_STRING (comp_dir) = stub_comp_dir; | |
7250 | } | |
b0c7bfa9 DE |
7251 | |
7252 | /* Set up for reading the DWO CU/TU. */ | |
7253 | cu->dwo_unit = dwo_unit; | |
685af9cd | 7254 | dwarf2_section_info *section = dwo_unit->section; |
b0c7bfa9 | 7255 | dwarf2_read_section (objfile, section); |
a32a8923 | 7256 | abfd = get_section_bfd_owner (section); |
9c541725 PA |
7257 | begin_info_ptr = info_ptr = (section->buffer |
7258 | + to_underlying (dwo_unit->sect_off)); | |
b0c7bfa9 | 7259 | dwo_abbrev_section = &dwo_unit->dwo_file->sections.abbrev; |
b0c7bfa9 DE |
7260 | |
7261 | if (this_cu->is_debug_types) | |
7262 | { | |
b0c7bfa9 DE |
7263 | struct signatured_type *sig_type = (struct signatured_type *) this_cu; |
7264 | ||
ed2dc618 SM |
7265 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7266 | &cu->header, section, | |
b0c7bfa9 | 7267 | dwo_abbrev_section, |
43988095 | 7268 | info_ptr, rcuh_kind::TYPE); |
a2ce51a0 | 7269 | /* This is not an assert because it can be caused by bad debug info. */ |
43988095 | 7270 | if (sig_type->signature != cu->header.signature) |
a2ce51a0 DE |
7271 | { |
7272 | error (_("Dwarf Error: signature mismatch %s vs %s while reading" | |
9d8780f0 | 7273 | " TU at offset %s [in module %s]"), |
a2ce51a0 | 7274 | hex_string (sig_type->signature), |
43988095 | 7275 | hex_string (cu->header.signature), |
9d8780f0 | 7276 | sect_offset_str (dwo_unit->sect_off), |
a2ce51a0 DE |
7277 | bfd_get_filename (abfd)); |
7278 | } | |
9c541725 | 7279 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7280 | /* For DWOs coming from DWP files, we don't know the CU length |
7281 | nor the type's offset in the TU until now. */ | |
7282 | dwo_unit->length = get_cu_length (&cu->header); | |
9c541725 | 7283 | dwo_unit->type_offset_in_tu = cu->header.type_cu_offset_in_tu; |
b0c7bfa9 DE |
7284 | |
7285 | /* Establish the type offset that can be used to lookup the type. | |
7286 | For DWO files, we don't know it until now. */ | |
9c541725 PA |
7287 | sig_type->type_offset_in_section |
7288 | = dwo_unit->sect_off + to_underlying (dwo_unit->type_offset_in_tu); | |
b0c7bfa9 DE |
7289 | } |
7290 | else | |
7291 | { | |
ed2dc618 SM |
7292 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7293 | &cu->header, section, | |
b0c7bfa9 | 7294 | dwo_abbrev_section, |
43988095 | 7295 | info_ptr, rcuh_kind::COMPILE); |
9c541725 | 7296 | gdb_assert (dwo_unit->sect_off == cu->header.sect_off); |
b0c7bfa9 DE |
7297 | /* For DWOs coming from DWP files, we don't know the CU length |
7298 | until now. */ | |
7299 | dwo_unit->length = get_cu_length (&cu->header); | |
7300 | } | |
7301 | ||
685af9cd TT |
7302 | *result_dwo_abbrev_table |
7303 | = abbrev_table_read_table (dwarf2_per_objfile, dwo_abbrev_section, | |
7304 | cu->header.abbrev_sect_off); | |
7305 | init_cu_die_reader (result_reader, cu, section, dwo_unit->dwo_file, | |
7306 | result_dwo_abbrev_table->get ()); | |
b0c7bfa9 DE |
7307 | |
7308 | /* Read in the die, but leave space to copy over the attributes | |
7309 | from the stub. This has the benefit of simplifying the rest of | |
7310 | the code - all the work to maintain the illusion of a single | |
7311 | DW_TAG_{compile,type}_unit DIE is done here. */ | |
7312 | num_extra_attrs = ((stmt_list != NULL) | |
7313 | + (low_pc != NULL) | |
7314 | + (high_pc != NULL) | |
7315 | + (ranges != NULL) | |
7316 | + (comp_dir != NULL)); | |
7317 | info_ptr = read_full_die_1 (result_reader, result_comp_unit_die, info_ptr, | |
7318 | result_has_children, num_extra_attrs); | |
7319 | ||
7320 | /* Copy over the attributes from the stub to the DIE we just read in. */ | |
7321 | comp_unit_die = *result_comp_unit_die; | |
7322 | i = comp_unit_die->num_attrs; | |
7323 | if (stmt_list != NULL) | |
7324 | comp_unit_die->attrs[i++] = *stmt_list; | |
7325 | if (low_pc != NULL) | |
7326 | comp_unit_die->attrs[i++] = *low_pc; | |
7327 | if (high_pc != NULL) | |
7328 | comp_unit_die->attrs[i++] = *high_pc; | |
7329 | if (ranges != NULL) | |
7330 | comp_unit_die->attrs[i++] = *ranges; | |
7331 | if (comp_dir != NULL) | |
7332 | comp_unit_die->attrs[i++] = *comp_dir; | |
7333 | comp_unit_die->num_attrs += num_extra_attrs; | |
7334 | ||
b4f54984 | 7335 | if (dwarf_die_debug) |
bf6af496 DE |
7336 | { |
7337 | fprintf_unfiltered (gdb_stdlog, | |
7338 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 7339 | get_section_name (section), |
bf6af496 DE |
7340 | (unsigned) (begin_info_ptr - section->buffer), |
7341 | bfd_get_filename (abfd)); | |
b4f54984 | 7342 | dump_die (comp_unit_die, dwarf_die_debug); |
bf6af496 DE |
7343 | } |
7344 | ||
a2ce51a0 DE |
7345 | /* Save the comp_dir attribute. If there is no DWP file then we'll read |
7346 | TUs by skipping the stub and going directly to the entry in the DWO file. | |
7347 | However, skipping the stub means we won't get DW_AT_comp_dir, so we have | |
7348 | to get it via circuitous means. Blech. */ | |
7349 | if (comp_dir != NULL) | |
7350 | result_reader->comp_dir = DW_STRING (comp_dir); | |
7351 | ||
b0c7bfa9 DE |
7352 | /* Skip dummy compilation units. */ |
7353 | if (info_ptr >= begin_info_ptr + dwo_unit->length | |
7354 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
7355 | return 0; | |
7356 | ||
7357 | *result_info_ptr = info_ptr; | |
7358 | return 1; | |
7359 | } | |
7360 | ||
7361 | /* Subroutine of init_cutu_and_read_dies to simplify it. | |
7362 | Look up the DWO unit specified by COMP_UNIT_DIE of THIS_CU. | |
6a506a2d | 7363 | Returns NULL if the specified DWO unit cannot be found. */ |
b0c7bfa9 DE |
7364 | |
7365 | static struct dwo_unit * | |
7366 | lookup_dwo_unit (struct dwarf2_per_cu_data *this_cu, | |
7367 | struct die_info *comp_unit_die) | |
7368 | { | |
7369 | struct dwarf2_cu *cu = this_cu->cu; | |
b0c7bfa9 DE |
7370 | ULONGEST signature; |
7371 | struct dwo_unit *dwo_unit; | |
7372 | const char *comp_dir, *dwo_name; | |
7373 | ||
a2ce51a0 DE |
7374 | gdb_assert (cu != NULL); |
7375 | ||
b0c7bfa9 | 7376 | /* Yeah, we look dwo_name up again, but it simplifies the code. */ |
7d45c7c3 KB |
7377 | dwo_name = dwarf2_string_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
7378 | comp_dir = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); | |
b0c7bfa9 DE |
7379 | |
7380 | if (this_cu->is_debug_types) | |
7381 | { | |
7382 | struct signatured_type *sig_type; | |
7383 | ||
7384 | /* Since this_cu is the first member of struct signatured_type, | |
7385 | we can go from a pointer to one to a pointer to the other. */ | |
7386 | sig_type = (struct signatured_type *) this_cu; | |
7387 | signature = sig_type->signature; | |
7388 | dwo_unit = lookup_dwo_type_unit (sig_type, dwo_name, comp_dir); | |
7389 | } | |
7390 | else | |
7391 | { | |
7392 | struct attribute *attr; | |
7393 | ||
7394 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
7395 | if (! attr) | |
7396 | error (_("Dwarf Error: missing dwo_id for dwo_name %s" | |
7397 | " [in module %s]"), | |
e3b94546 | 7398 | dwo_name, objfile_name (this_cu->dwarf2_per_objfile->objfile)); |
b0c7bfa9 DE |
7399 | signature = DW_UNSND (attr); |
7400 | dwo_unit = lookup_dwo_comp_unit (this_cu, dwo_name, comp_dir, | |
7401 | signature); | |
7402 | } | |
7403 | ||
b0c7bfa9 DE |
7404 | return dwo_unit; |
7405 | } | |
7406 | ||
a2ce51a0 | 7407 | /* Subroutine of init_cutu_and_read_dies to simplify it. |
6aa5f3a6 | 7408 | See it for a description of the parameters. |
fcd3b13d | 7409 | Read a TU directly from a DWO file, bypassing the stub. */ |
a2ce51a0 DE |
7410 | |
7411 | static void | |
6aa5f3a6 DE |
7412 | init_tu_and_read_dwo_dies (struct dwarf2_per_cu_data *this_cu, |
7413 | int use_existing_cu, int keep, | |
a2ce51a0 DE |
7414 | die_reader_func_ftype *die_reader_func, |
7415 | void *data) | |
7416 | { | |
fcd3b13d | 7417 | std::unique_ptr<dwarf2_cu> new_cu; |
a2ce51a0 | 7418 | struct signatured_type *sig_type; |
a2ce51a0 DE |
7419 | struct die_reader_specs reader; |
7420 | const gdb_byte *info_ptr; | |
7421 | struct die_info *comp_unit_die; | |
7422 | int has_children; | |
ed2dc618 | 7423 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
a2ce51a0 DE |
7424 | |
7425 | /* Verify we can do the following downcast, and that we have the | |
7426 | data we need. */ | |
7427 | gdb_assert (this_cu->is_debug_types && this_cu->reading_dwo_directly); | |
7428 | sig_type = (struct signatured_type *) this_cu; | |
7429 | gdb_assert (sig_type->dwo_unit != NULL); | |
7430 | ||
6aa5f3a6 DE |
7431 | if (use_existing_cu && this_cu->cu != NULL) |
7432 | { | |
7433 | gdb_assert (this_cu->cu->dwo_unit == sig_type->dwo_unit); | |
6aa5f3a6 DE |
7434 | /* There's no need to do the rereading_dwo_cu handling that |
7435 | init_cutu_and_read_dies does since we don't read the stub. */ | |
7436 | } | |
7437 | else | |
7438 | { | |
7439 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7440 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d | 7441 | new_cu.reset (new dwarf2_cu (this_cu)); |
6aa5f3a6 DE |
7442 | } |
7443 | ||
7444 | /* A future optimization, if needed, would be to use an existing | |
7445 | abbrev table. When reading DWOs with skeletonless TUs, all the TUs | |
7446 | could share abbrev tables. */ | |
a2ce51a0 | 7447 | |
685af9cd TT |
7448 | /* The abbreviation table used by READER, this must live at least as long as |
7449 | READER. */ | |
7450 | abbrev_table_up dwo_abbrev_table; | |
7451 | ||
a2ce51a0 | 7452 | if (read_cutu_die_from_dwo (this_cu, sig_type->dwo_unit, |
a2ce51a0 DE |
7453 | NULL /* stub_comp_unit_die */, |
7454 | sig_type->dwo_unit->dwo_file->comp_dir, | |
7455 | &reader, &info_ptr, | |
685af9cd TT |
7456 | &comp_unit_die, &has_children, |
7457 | &dwo_abbrev_table) == 0) | |
a2ce51a0 DE |
7458 | { |
7459 | /* Dummy die. */ | |
a2ce51a0 DE |
7460 | return; |
7461 | } | |
7462 | ||
7463 | /* All the "real" work is done here. */ | |
7464 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
7465 | ||
6aa5f3a6 | 7466 | /* This duplicates the code in init_cutu_and_read_dies, |
a2ce51a0 DE |
7467 | but the alternative is making the latter more complex. |
7468 | This function is only for the special case of using DWO files directly: | |
7469 | no point in overly complicating the general case just to handle this. */ | |
fcd3b13d | 7470 | if (new_cu != NULL && keep) |
a2ce51a0 | 7471 | { |
fcd3b13d SM |
7472 | /* Link this CU into read_in_chain. */ |
7473 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7474 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7475 | /* The chain owns it now. */ | |
7476 | new_cu.release (); | |
a2ce51a0 | 7477 | } |
a2ce51a0 DE |
7478 | } |
7479 | ||
fd820528 | 7480 | /* Initialize a CU (or TU) and read its DIEs. |
3019eac3 | 7481 | If the CU defers to a DWO file, read the DWO file as well. |
dee91e82 | 7482 | |
f4dc4d17 DE |
7483 | ABBREV_TABLE, if non-NULL, is the abbreviation table to use. |
7484 | Otherwise the table specified in the comp unit header is read in and used. | |
7485 | This is an optimization for when we already have the abbrev table. | |
7486 | ||
dee91e82 DE |
7487 | If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it. |
7488 | Otherwise, a new CU is allocated with xmalloc. | |
7489 | ||
7490 | If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to | |
7491 | read_in_chain. Otherwise the dwarf2_cu data is freed at the end. | |
7492 | ||
7493 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
fd820528 | 7494 | linker) then DIE_READER_FUNC will not get called. */ |
aaa75496 | 7495 | |
70221824 | 7496 | static void |
fd820528 | 7497 | init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu, |
f4dc4d17 | 7498 | struct abbrev_table *abbrev_table, |
fd820528 | 7499 | int use_existing_cu, int keep, |
58f0c718 | 7500 | bool skip_partial, |
fd820528 DE |
7501 | die_reader_func_ftype *die_reader_func, |
7502 | void *data) | |
c906108c | 7503 | { |
ed2dc618 | 7504 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7505 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7506 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7507 | bfd *abfd = get_section_bfd_owner (section); |
dee91e82 | 7508 | struct dwarf2_cu *cu; |
d521ce57 | 7509 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7510 | struct die_reader_specs reader; |
d85a05f0 | 7511 | struct die_info *comp_unit_die; |
dee91e82 | 7512 | int has_children; |
d85a05f0 | 7513 | struct attribute *attr; |
dee91e82 | 7514 | struct signatured_type *sig_type = NULL; |
4bdcc0c1 | 7515 | struct dwarf2_section_info *abbrev_section; |
42e7ad6c DE |
7516 | /* Non-zero if CU currently points to a DWO file and we need to |
7517 | reread it. When this happens we need to reread the skeleton die | |
a2ce51a0 | 7518 | before we can reread the DWO file (this only applies to CUs, not TUs). */ |
42e7ad6c | 7519 | int rereading_dwo_cu = 0; |
c906108c | 7520 | |
b4f54984 | 7521 | if (dwarf_die_debug) |
9d8780f0 | 7522 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7523 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7524 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7525 | |
dee91e82 DE |
7526 | if (use_existing_cu) |
7527 | gdb_assert (keep); | |
23745b47 | 7528 | |
a2ce51a0 DE |
7529 | /* If we're reading a TU directly from a DWO file, including a virtual DWO |
7530 | file (instead of going through the stub), short-circuit all of this. */ | |
7531 | if (this_cu->reading_dwo_directly) | |
7532 | { | |
7533 | /* Narrow down the scope of possibilities to have to understand. */ | |
7534 | gdb_assert (this_cu->is_debug_types); | |
7535 | gdb_assert (abbrev_table == NULL); | |
6aa5f3a6 DE |
7536 | init_tu_and_read_dwo_dies (this_cu, use_existing_cu, keep, |
7537 | die_reader_func, data); | |
a2ce51a0 DE |
7538 | return; |
7539 | } | |
7540 | ||
dee91e82 DE |
7541 | /* This is cheap if the section is already read in. */ |
7542 | dwarf2_read_section (objfile, section); | |
7543 | ||
9c541725 | 7544 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
36586728 TT |
7545 | |
7546 | abbrev_section = get_abbrev_section_for_cu (this_cu); | |
dee91e82 | 7547 | |
fcd3b13d | 7548 | std::unique_ptr<dwarf2_cu> new_cu; |
dee91e82 DE |
7549 | if (use_existing_cu && this_cu->cu != NULL) |
7550 | { | |
7551 | cu = this_cu->cu; | |
42e7ad6c DE |
7552 | /* If this CU is from a DWO file we need to start over, we need to |
7553 | refetch the attributes from the skeleton CU. | |
7554 | This could be optimized by retrieving those attributes from when we | |
7555 | were here the first time: the previous comp_unit_die was stored in | |
7556 | comp_unit_obstack. But there's no data yet that we need this | |
7557 | optimization. */ | |
7558 | if (cu->dwo_unit != NULL) | |
7559 | rereading_dwo_cu = 1; | |
dee91e82 DE |
7560 | } |
7561 | else | |
7562 | { | |
7563 | /* If !use_existing_cu, this_cu->cu must be NULL. */ | |
7564 | gdb_assert (this_cu->cu == NULL); | |
fcd3b13d SM |
7565 | new_cu.reset (new dwarf2_cu (this_cu)); |
7566 | cu = new_cu.get (); | |
42e7ad6c | 7567 | } |
dee91e82 | 7568 | |
b0c7bfa9 | 7569 | /* Get the header. */ |
9c541725 | 7570 | if (to_underlying (cu->header.first_die_cu_offset) != 0 && !rereading_dwo_cu) |
42e7ad6c DE |
7571 | { |
7572 | /* We already have the header, there's no need to read it in again. */ | |
9c541725 | 7573 | info_ptr += to_underlying (cu->header.first_die_cu_offset); |
42e7ad6c DE |
7574 | } |
7575 | else | |
7576 | { | |
3019eac3 | 7577 | if (this_cu->is_debug_types) |
dee91e82 | 7578 | { |
ed2dc618 SM |
7579 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7580 | &cu->header, section, | |
4bdcc0c1 | 7581 | abbrev_section, info_ptr, |
43988095 | 7582 | rcuh_kind::TYPE); |
dee91e82 | 7583 | |
42e7ad6c DE |
7584 | /* Since per_cu is the first member of struct signatured_type, |
7585 | we can go from a pointer to one to a pointer to the other. */ | |
7586 | sig_type = (struct signatured_type *) this_cu; | |
43988095 | 7587 | gdb_assert (sig_type->signature == cu->header.signature); |
9c541725 PA |
7588 | gdb_assert (sig_type->type_offset_in_tu |
7589 | == cu->header.type_cu_offset_in_tu); | |
7590 | gdb_assert (this_cu->sect_off == cu->header.sect_off); | |
dee91e82 | 7591 | |
42e7ad6c DE |
7592 | /* LENGTH has not been set yet for type units if we're |
7593 | using .gdb_index. */ | |
1ce1cefd | 7594 | this_cu->length = get_cu_length (&cu->header); |
3019eac3 DE |
7595 | |
7596 | /* Establish the type offset that can be used to lookup the type. */ | |
9c541725 PA |
7597 | sig_type->type_offset_in_section = |
7598 | this_cu->sect_off + to_underlying (sig_type->type_offset_in_tu); | |
43988095 JK |
7599 | |
7600 | this_cu->dwarf_version = cu->header.version; | |
dee91e82 DE |
7601 | } |
7602 | else | |
7603 | { | |
ed2dc618 SM |
7604 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7605 | &cu->header, section, | |
4bdcc0c1 | 7606 | abbrev_section, |
43988095 JK |
7607 | info_ptr, |
7608 | rcuh_kind::COMPILE); | |
dee91e82 | 7609 | |
9c541725 | 7610 | gdb_assert (this_cu->sect_off == cu->header.sect_off); |
1ce1cefd | 7611 | gdb_assert (this_cu->length == get_cu_length (&cu->header)); |
43988095 | 7612 | this_cu->dwarf_version = cu->header.version; |
dee91e82 DE |
7613 | } |
7614 | } | |
10b3939b | 7615 | |
6caca83c | 7616 | /* Skip dummy compilation units. */ |
dee91e82 | 7617 | if (info_ptr >= begin_info_ptr + this_cu->length |
6caca83c | 7618 | || peek_abbrev_code (abfd, info_ptr) == 0) |
fcd3b13d | 7619 | return; |
6caca83c | 7620 | |
433df2d4 DE |
7621 | /* If we don't have them yet, read the abbrevs for this compilation unit. |
7622 | And if we need to read them now, make sure they're freed when we're | |
685af9cd TT |
7623 | done (own the table through ABBREV_TABLE_HOLDER). */ |
7624 | abbrev_table_up abbrev_table_holder; | |
f4dc4d17 | 7625 | if (abbrev_table != NULL) |
685af9cd TT |
7626 | gdb_assert (cu->header.abbrev_sect_off == abbrev_table->sect_off); |
7627 | else | |
f4dc4d17 | 7628 | { |
685af9cd TT |
7629 | abbrev_table_holder |
7630 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7631 | cu->header.abbrev_sect_off); | |
7632 | abbrev_table = abbrev_table_holder.get (); | |
42e7ad6c | 7633 | } |
af703f96 | 7634 | |
dee91e82 | 7635 | /* Read the top level CU/TU die. */ |
685af9cd | 7636 | init_cu_die_reader (&reader, cu, section, NULL, abbrev_table); |
dee91e82 | 7637 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
93311388 | 7638 | |
58f0c718 TT |
7639 | if (skip_partial && comp_unit_die->tag == DW_TAG_partial_unit) |
7640 | return; | |
7641 | ||
b0c7bfa9 | 7642 | /* If we are in a DWO stub, process it and then read in the "real" CU/TU |
685af9cd TT |
7643 | from the DWO file. read_cutu_die_from_dwo will allocate the abbreviation |
7644 | table from the DWO file and pass the ownership over to us. It will be | |
7645 | referenced from READER, so we must make sure to free it after we're done | |
7646 | with READER. | |
7647 | ||
b0c7bfa9 DE |
7648 | Note that if USE_EXISTING_OK != 0, and THIS_CU->cu already contains a |
7649 | DWO CU, that this test will fail (the attribute will not be present). */ | |
3019eac3 | 7650 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_name, cu); |
685af9cd | 7651 | abbrev_table_up dwo_abbrev_table; |
3019eac3 DE |
7652 | if (attr) |
7653 | { | |
3019eac3 | 7654 | struct dwo_unit *dwo_unit; |
b0c7bfa9 | 7655 | struct die_info *dwo_comp_unit_die; |
3019eac3 DE |
7656 | |
7657 | if (has_children) | |
6a506a2d | 7658 | { |
b98664d3 | 7659 | complaint (_("compilation unit with DW_AT_GNU_dwo_name" |
9d8780f0 SM |
7660 | " has children (offset %s) [in module %s]"), |
7661 | sect_offset_str (this_cu->sect_off), | |
7662 | bfd_get_filename (abfd)); | |
6a506a2d | 7663 | } |
b0c7bfa9 | 7664 | dwo_unit = lookup_dwo_unit (this_cu, comp_unit_die); |
6a506a2d | 7665 | if (dwo_unit != NULL) |
3019eac3 | 7666 | { |
6a506a2d | 7667 | if (read_cutu_die_from_dwo (this_cu, dwo_unit, |
a2ce51a0 | 7668 | comp_unit_die, NULL, |
6a506a2d | 7669 | &reader, &info_ptr, |
685af9cd TT |
7670 | &dwo_comp_unit_die, &has_children, |
7671 | &dwo_abbrev_table) == 0) | |
6a506a2d DE |
7672 | { |
7673 | /* Dummy die. */ | |
6a506a2d DE |
7674 | return; |
7675 | } | |
7676 | comp_unit_die = dwo_comp_unit_die; | |
7677 | } | |
7678 | else | |
7679 | { | |
7680 | /* Yikes, we couldn't find the rest of the DIE, we only have | |
7681 | the stub. A complaint has already been logged. There's | |
7682 | not much more we can do except pass on the stub DIE to | |
7683 | die_reader_func. We don't want to throw an error on bad | |
7684 | debug info. */ | |
3019eac3 DE |
7685 | } |
7686 | } | |
7687 | ||
b0c7bfa9 | 7688 | /* All of the above is setup for this call. Yikes. */ |
dee91e82 DE |
7689 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); |
7690 | ||
b0c7bfa9 | 7691 | /* Done, clean up. */ |
fcd3b13d | 7692 | if (new_cu != NULL && keep) |
348e048f | 7693 | { |
fcd3b13d SM |
7694 | /* Link this CU into read_in_chain. */ |
7695 | this_cu->cu->read_in_chain = dwarf2_per_objfile->read_in_chain; | |
7696 | dwarf2_per_objfile->read_in_chain = this_cu; | |
7697 | /* The chain owns it now. */ | |
7698 | new_cu.release (); | |
348e048f | 7699 | } |
dee91e82 DE |
7700 | } |
7701 | ||
33e80786 DE |
7702 | /* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present. |
7703 | DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed | |
7704 | to have already done the lookup to find the DWO file). | |
dee91e82 DE |
7705 | |
7706 | The caller is required to fill in THIS_CU->section, THIS_CU->offset, and | |
3019eac3 | 7707 | THIS_CU->is_debug_types, but nothing else. |
dee91e82 DE |
7708 | |
7709 | We fill in THIS_CU->length. | |
7710 | ||
7711 | WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental | |
7712 | linker) then DIE_READER_FUNC will not get called. | |
7713 | ||
7714 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7715 | This is done in order to not leave THIS_CU->cu in a state where we have |
7716 | to care whether it refers to the "main" CU or the DWO CU. */ | |
dee91e82 DE |
7717 | |
7718 | static void | |
7719 | init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu, | |
3019eac3 | 7720 | struct dwo_file *dwo_file, |
dee91e82 DE |
7721 | die_reader_func_ftype *die_reader_func, |
7722 | void *data) | |
7723 | { | |
ed2dc618 | 7724 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_cu->dwarf2_per_objfile; |
dee91e82 | 7725 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8a0459fd | 7726 | struct dwarf2_section_info *section = this_cu->section; |
a32a8923 | 7727 | bfd *abfd = get_section_bfd_owner (section); |
33e80786 | 7728 | struct dwarf2_section_info *abbrev_section; |
d521ce57 | 7729 | const gdb_byte *begin_info_ptr, *info_ptr; |
dee91e82 | 7730 | struct die_reader_specs reader; |
dee91e82 DE |
7731 | struct die_info *comp_unit_die; |
7732 | int has_children; | |
7733 | ||
b4f54984 | 7734 | if (dwarf_die_debug) |
9d8780f0 | 7735 | fprintf_unfiltered (gdb_stdlog, "Reading %s unit at offset %s\n", |
09406207 | 7736 | this_cu->is_debug_types ? "type" : "comp", |
9d8780f0 | 7737 | sect_offset_str (this_cu->sect_off)); |
09406207 | 7738 | |
dee91e82 DE |
7739 | gdb_assert (this_cu->cu == NULL); |
7740 | ||
33e80786 DE |
7741 | abbrev_section = (dwo_file != NULL |
7742 | ? &dwo_file->sections.abbrev | |
7743 | : get_abbrev_section_for_cu (this_cu)); | |
7744 | ||
dee91e82 DE |
7745 | /* This is cheap if the section is already read in. */ |
7746 | dwarf2_read_section (objfile, section); | |
7747 | ||
fcd3b13d | 7748 | struct dwarf2_cu cu (this_cu); |
dee91e82 | 7749 | |
9c541725 | 7750 | begin_info_ptr = info_ptr = section->buffer + to_underlying (this_cu->sect_off); |
ed2dc618 SM |
7751 | info_ptr = read_and_check_comp_unit_head (dwarf2_per_objfile, |
7752 | &cu.header, section, | |
4bdcc0c1 | 7753 | abbrev_section, info_ptr, |
43988095 JK |
7754 | (this_cu->is_debug_types |
7755 | ? rcuh_kind::TYPE | |
7756 | : rcuh_kind::COMPILE)); | |
dee91e82 | 7757 | |
1ce1cefd | 7758 | this_cu->length = get_cu_length (&cu.header); |
dee91e82 DE |
7759 | |
7760 | /* Skip dummy compilation units. */ | |
7761 | if (info_ptr >= begin_info_ptr + this_cu->length | |
7762 | || peek_abbrev_code (abfd, info_ptr) == 0) | |
fcd3b13d | 7763 | return; |
72bf9492 | 7764 | |
685af9cd TT |
7765 | abbrev_table_up abbrev_table |
7766 | = abbrev_table_read_table (dwarf2_per_objfile, abbrev_section, | |
7767 | cu.header.abbrev_sect_off); | |
dee91e82 | 7768 | |
685af9cd | 7769 | init_cu_die_reader (&reader, &cu, section, dwo_file, abbrev_table.get ()); |
dee91e82 DE |
7770 | info_ptr = read_full_die (&reader, &comp_unit_die, info_ptr, &has_children); |
7771 | ||
7772 | die_reader_func (&reader, info_ptr, comp_unit_die, has_children, data); | |
dee91e82 DE |
7773 | } |
7774 | ||
3019eac3 DE |
7775 | /* Read a CU/TU, except that this does not look for DW_AT_GNU_dwo_name and |
7776 | does not lookup the specified DWO file. | |
7777 | This cannot be used to read DWO files. | |
dee91e82 DE |
7778 | |
7779 | THIS_CU->cu is always freed when done. | |
3019eac3 DE |
7780 | This is done in order to not leave THIS_CU->cu in a state where we have |
7781 | to care whether it refers to the "main" CU or the DWO CU. | |
7782 | We can revisit this if the data shows there's a performance issue. */ | |
dee91e82 DE |
7783 | |
7784 | static void | |
7785 | init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu, | |
7786 | die_reader_func_ftype *die_reader_func, | |
7787 | void *data) | |
7788 | { | |
33e80786 | 7789 | init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data); |
dee91e82 | 7790 | } |
0018ea6f DE |
7791 | \f |
7792 | /* Type Unit Groups. | |
dee91e82 | 7793 | |
0018ea6f DE |
7794 | Type Unit Groups are a way to collapse the set of all TUs (type units) into |
7795 | a more manageable set. The grouping is done by DW_AT_stmt_list entry | |
7796 | so that all types coming from the same compilation (.o file) are grouped | |
7797 | together. A future step could be to put the types in the same symtab as | |
7798 | the CU the types ultimately came from. */ | |
ff013f42 | 7799 | |
f4dc4d17 DE |
7800 | static hashval_t |
7801 | hash_type_unit_group (const void *item) | |
7802 | { | |
9a3c8263 SM |
7803 | const struct type_unit_group *tu_group |
7804 | = (const struct type_unit_group *) item; | |
f4dc4d17 | 7805 | |
094b34ac | 7806 | return hash_stmt_list_entry (&tu_group->hash); |
f4dc4d17 | 7807 | } |
348e048f DE |
7808 | |
7809 | static int | |
f4dc4d17 | 7810 | eq_type_unit_group (const void *item_lhs, const void *item_rhs) |
348e048f | 7811 | { |
9a3c8263 SM |
7812 | const struct type_unit_group *lhs = (const struct type_unit_group *) item_lhs; |
7813 | const struct type_unit_group *rhs = (const struct type_unit_group *) item_rhs; | |
348e048f | 7814 | |
094b34ac | 7815 | return eq_stmt_list_entry (&lhs->hash, &rhs->hash); |
f4dc4d17 | 7816 | } |
348e048f | 7817 | |
f4dc4d17 DE |
7818 | /* Allocate a hash table for type unit groups. */ |
7819 | ||
7820 | static htab_t | |
ed2dc618 | 7821 | allocate_type_unit_groups_table (struct objfile *objfile) |
f4dc4d17 DE |
7822 | { |
7823 | return htab_create_alloc_ex (3, | |
7824 | hash_type_unit_group, | |
7825 | eq_type_unit_group, | |
7826 | NULL, | |
ed2dc618 | 7827 | &objfile->objfile_obstack, |
f4dc4d17 DE |
7828 | hashtab_obstack_allocate, |
7829 | dummy_obstack_deallocate); | |
7830 | } | |
dee91e82 | 7831 | |
f4dc4d17 DE |
7832 | /* Type units that don't have DW_AT_stmt_list are grouped into their own |
7833 | partial symtabs. We combine several TUs per psymtab to not let the size | |
7834 | of any one psymtab grow too big. */ | |
7835 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB (1 << 31) | |
7836 | #define NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE 10 | |
dee91e82 | 7837 | |
094b34ac | 7838 | /* Helper routine for get_type_unit_group. |
f4dc4d17 DE |
7839 | Create the type_unit_group object used to hold one or more TUs. */ |
7840 | ||
7841 | static struct type_unit_group * | |
094b34ac | 7842 | create_type_unit_group (struct dwarf2_cu *cu, sect_offset line_offset_struct) |
f4dc4d17 | 7843 | { |
518817b3 SM |
7844 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7845 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 | 7846 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
094b34ac | 7847 | struct dwarf2_per_cu_data *per_cu; |
f4dc4d17 | 7848 | struct type_unit_group *tu_group; |
f4dc4d17 DE |
7849 | |
7850 | tu_group = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7851 | struct type_unit_group); | |
094b34ac | 7852 | per_cu = &tu_group->per_cu; |
518817b3 | 7853 | per_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
f4dc4d17 | 7854 | |
094b34ac DE |
7855 | if (dwarf2_per_objfile->using_index) |
7856 | { | |
7857 | per_cu->v.quick = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
7858 | struct dwarf2_per_cu_quick_data); | |
094b34ac DE |
7859 | } |
7860 | else | |
7861 | { | |
9c541725 | 7862 | unsigned int line_offset = to_underlying (line_offset_struct); |
094b34ac | 7863 | struct partial_symtab *pst; |
528e1572 | 7864 | std::string name; |
094b34ac DE |
7865 | |
7866 | /* Give the symtab a useful name for debug purposes. */ | |
7867 | if ((line_offset & NO_STMT_LIST_TYPE_UNIT_PSYMTAB) != 0) | |
528e1572 SM |
7868 | name = string_printf ("<type_units_%d>", |
7869 | (line_offset & ~NO_STMT_LIST_TYPE_UNIT_PSYMTAB)); | |
094b34ac | 7870 | else |
528e1572 | 7871 | name = string_printf ("<type_units_at_0x%x>", line_offset); |
094b34ac | 7872 | |
528e1572 | 7873 | pst = create_partial_symtab (per_cu, name.c_str ()); |
094b34ac | 7874 | pst->anonymous = 1; |
094b34ac | 7875 | } |
f4dc4d17 | 7876 | |
094b34ac | 7877 | tu_group->hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7878 | tu_group->hash.line_sect_off = line_offset_struct; |
f4dc4d17 DE |
7879 | |
7880 | return tu_group; | |
7881 | } | |
7882 | ||
094b34ac DE |
7883 | /* Look up the type_unit_group for type unit CU, and create it if necessary. |
7884 | STMT_LIST is a DW_AT_stmt_list attribute. */ | |
f4dc4d17 DE |
7885 | |
7886 | static struct type_unit_group * | |
ff39bb5e | 7887 | get_type_unit_group (struct dwarf2_cu *cu, const struct attribute *stmt_list) |
f4dc4d17 | 7888 | { |
518817b3 SM |
7889 | struct dwarf2_per_objfile *dwarf2_per_objfile |
7890 | = cu->per_cu->dwarf2_per_objfile; | |
f4dc4d17 DE |
7891 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
7892 | struct type_unit_group *tu_group; | |
7893 | void **slot; | |
7894 | unsigned int line_offset; | |
7895 | struct type_unit_group type_unit_group_for_lookup; | |
7896 | ||
7897 | if (dwarf2_per_objfile->type_unit_groups == NULL) | |
7898 | { | |
7899 | dwarf2_per_objfile->type_unit_groups = | |
ed2dc618 | 7900 | allocate_type_unit_groups_table (dwarf2_per_objfile->objfile); |
f4dc4d17 DE |
7901 | } |
7902 | ||
7903 | /* Do we need to create a new group, or can we use an existing one? */ | |
7904 | ||
7905 | if (stmt_list) | |
7906 | { | |
7907 | line_offset = DW_UNSND (stmt_list); | |
7908 | ++tu_stats->nr_symtab_sharers; | |
7909 | } | |
7910 | else | |
7911 | { | |
7912 | /* Ugh, no stmt_list. Rare, but we have to handle it. | |
7913 | We can do various things here like create one group per TU or | |
7914 | spread them over multiple groups to split up the expansion work. | |
7915 | To avoid worst case scenarios (too many groups or too large groups) | |
7916 | we, umm, group them in bunches. */ | |
7917 | line_offset = (NO_STMT_LIST_TYPE_UNIT_PSYMTAB | |
7918 | | (tu_stats->nr_stmt_less_type_units | |
7919 | / NO_STMT_LIST_TYPE_UNIT_PSYMTAB_SIZE)); | |
7920 | ++tu_stats->nr_stmt_less_type_units; | |
7921 | } | |
7922 | ||
094b34ac | 7923 | type_unit_group_for_lookup.hash.dwo_unit = cu->dwo_unit; |
9c541725 | 7924 | type_unit_group_for_lookup.hash.line_sect_off = (sect_offset) line_offset; |
f4dc4d17 DE |
7925 | slot = htab_find_slot (dwarf2_per_objfile->type_unit_groups, |
7926 | &type_unit_group_for_lookup, INSERT); | |
7927 | if (*slot != NULL) | |
7928 | { | |
9a3c8263 | 7929 | tu_group = (struct type_unit_group *) *slot; |
f4dc4d17 DE |
7930 | gdb_assert (tu_group != NULL); |
7931 | } | |
7932 | else | |
7933 | { | |
9c541725 | 7934 | sect_offset line_offset_struct = (sect_offset) line_offset; |
094b34ac | 7935 | tu_group = create_type_unit_group (cu, line_offset_struct); |
f4dc4d17 DE |
7936 | *slot = tu_group; |
7937 | ++tu_stats->nr_symtabs; | |
7938 | } | |
7939 | ||
7940 | return tu_group; | |
7941 | } | |
0018ea6f DE |
7942 | \f |
7943 | /* Partial symbol tables. */ | |
7944 | ||
7945 | /* Create a psymtab named NAME and assign it to PER_CU. | |
7946 | ||
7947 | The caller must fill in the following details: | |
7948 | dirname, textlow, texthigh. */ | |
7949 | ||
7950 | static struct partial_symtab * | |
7951 | create_partial_symtab (struct dwarf2_per_cu_data *per_cu, const char *name) | |
7952 | { | |
e3b94546 | 7953 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
0018ea6f DE |
7954 | struct partial_symtab *pst; |
7955 | ||
939652a5 | 7956 | pst = start_psymtab_common (objfile, name, 0); |
0018ea6f DE |
7957 | |
7958 | pst->psymtabs_addrmap_supported = 1; | |
7959 | ||
7960 | /* This is the glue that links PST into GDB's symbol API. */ | |
7961 | pst->read_symtab_private = per_cu; | |
7962 | pst->read_symtab = dwarf2_read_symtab; | |
7963 | per_cu->v.psymtab = pst; | |
7964 | ||
7965 | return pst; | |
7966 | } | |
7967 | ||
b93601f3 TT |
7968 | /* The DATA object passed to process_psymtab_comp_unit_reader has this |
7969 | type. */ | |
7970 | ||
7971 | struct process_psymtab_comp_unit_data | |
7972 | { | |
7973 | /* True if we are reading a DW_TAG_partial_unit. */ | |
7974 | ||
7975 | int want_partial_unit; | |
7976 | ||
7977 | /* The "pretend" language that is used if the CU doesn't declare a | |
7978 | language. */ | |
7979 | ||
7980 | enum language pretend_language; | |
7981 | }; | |
7982 | ||
0018ea6f DE |
7983 | /* die_reader_func for process_psymtab_comp_unit. */ |
7984 | ||
7985 | static void | |
7986 | process_psymtab_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 7987 | const gdb_byte *info_ptr, |
0018ea6f DE |
7988 | struct die_info *comp_unit_die, |
7989 | int has_children, | |
7990 | void *data) | |
7991 | { | |
7992 | struct dwarf2_cu *cu = reader->cu; | |
518817b3 | 7993 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 7994 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
0018ea6f | 7995 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; |
0018ea6f DE |
7996 | CORE_ADDR baseaddr; |
7997 | CORE_ADDR best_lowpc = 0, best_highpc = 0; | |
7998 | struct partial_symtab *pst; | |
3a2b436a | 7999 | enum pc_bounds_kind cu_bounds_kind; |
0018ea6f | 8000 | const char *filename; |
9a3c8263 SM |
8001 | struct process_psymtab_comp_unit_data *info |
8002 | = (struct process_psymtab_comp_unit_data *) data; | |
0018ea6f | 8003 | |
b93601f3 | 8004 | if (comp_unit_die->tag == DW_TAG_partial_unit && !info->want_partial_unit) |
0018ea6f DE |
8005 | return; |
8006 | ||
8007 | gdb_assert (! per_cu->is_debug_types); | |
8008 | ||
b93601f3 | 8009 | prepare_one_comp_unit (cu, comp_unit_die, info->pretend_language); |
0018ea6f | 8010 | |
0018ea6f | 8011 | /* Allocate a new partial symbol table structure. */ |
7d45c7c3 KB |
8012 | filename = dwarf2_string_attr (comp_unit_die, DW_AT_name, cu); |
8013 | if (filename == NULL) | |
0018ea6f | 8014 | filename = ""; |
0018ea6f DE |
8015 | |
8016 | pst = create_partial_symtab (per_cu, filename); | |
8017 | ||
8018 | /* This must be done before calling dwarf2_build_include_psymtabs. */ | |
7d45c7c3 | 8019 | pst->dirname = dwarf2_string_attr (comp_unit_die, DW_AT_comp_dir, cu); |
0018ea6f DE |
8020 | |
8021 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
8022 | ||
8023 | dwarf2_find_base_address (comp_unit_die, cu); | |
8024 | ||
8025 | /* Possibly set the default values of LOWPC and HIGHPC from | |
8026 | `DW_AT_ranges'. */ | |
3a2b436a JK |
8027 | cu_bounds_kind = dwarf2_get_pc_bounds (comp_unit_die, &best_lowpc, |
8028 | &best_highpc, cu, pst); | |
8029 | if (cu_bounds_kind == PC_BOUNDS_HIGH_LOW && best_lowpc < best_highpc) | |
79748972 TT |
8030 | { |
8031 | CORE_ADDR low | |
8032 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_lowpc + baseaddr) | |
8033 | - baseaddr); | |
8034 | CORE_ADDR high | |
8035 | = (gdbarch_adjust_dwarf2_addr (gdbarch, best_highpc + baseaddr) | |
8036 | - baseaddr - 1); | |
8037 | /* Store the contiguous range if it is not empty; it can be | |
8038 | empty for CUs with no code. */ | |
d320c2b5 TT |
8039 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
8040 | low, high, pst); | |
79748972 | 8041 | } |
0018ea6f DE |
8042 | |
8043 | /* Check if comp unit has_children. | |
8044 | If so, read the rest of the partial symbols from this comp unit. | |
8045 | If not, there's no more debug_info for this comp unit. */ | |
8046 | if (has_children) | |
8047 | { | |
8048 | struct partial_die_info *first_die; | |
8049 | CORE_ADDR lowpc, highpc; | |
8050 | ||
8051 | lowpc = ((CORE_ADDR) -1); | |
8052 | highpc = ((CORE_ADDR) 0); | |
8053 | ||
8054 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8055 | ||
8056 | scan_partial_symbols (first_die, &lowpc, &highpc, | |
e385593e | 8057 | cu_bounds_kind <= PC_BOUNDS_INVALID, cu); |
0018ea6f DE |
8058 | |
8059 | /* If we didn't find a lowpc, set it to highpc to avoid | |
8060 | complaints from `maint check'. */ | |
8061 | if (lowpc == ((CORE_ADDR) -1)) | |
8062 | lowpc = highpc; | |
8063 | ||
8064 | /* If the compilation unit didn't have an explicit address range, | |
8065 | then use the information extracted from its child dies. */ | |
e385593e | 8066 | if (cu_bounds_kind <= PC_BOUNDS_INVALID) |
0018ea6f DE |
8067 | { |
8068 | best_lowpc = lowpc; | |
8069 | best_highpc = highpc; | |
8070 | } | |
8071 | } | |
4ae976d1 | 8072 | pst->set_text_low (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8073 | best_lowpc + baseaddr) |
8074 | - baseaddr); | |
4ae976d1 | 8075 | pst->set_text_high (gdbarch_adjust_dwarf2_addr (gdbarch, |
79748972 TT |
8076 | best_highpc + baseaddr) |
8077 | - baseaddr); | |
0018ea6f | 8078 | |
8763cede | 8079 | end_psymtab_common (objfile, pst); |
0018ea6f DE |
8080 | |
8081 | if (!VEC_empty (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs)) | |
8082 | { | |
8083 | int i; | |
8084 | int len = VEC_length (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8085 | struct dwarf2_per_cu_data *iter; | |
8086 | ||
8087 | /* Fill in 'dependencies' here; we fill in 'users' in a | |
8088 | post-pass. */ | |
8089 | pst->number_of_dependencies = len; | |
a9342b62 TT |
8090 | pst->dependencies |
8091 | = objfile->partial_symtabs->allocate_dependencies (len); | |
0018ea6f DE |
8092 | for (i = 0; |
8093 | VEC_iterate (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, | |
8094 | i, iter); | |
8095 | ++i) | |
8096 | pst->dependencies[i] = iter->v.psymtab; | |
8097 | ||
8098 | VEC_free (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs); | |
8099 | } | |
8100 | ||
8101 | /* Get the list of files included in the current compilation unit, | |
8102 | and build a psymtab for each of them. */ | |
8103 | dwarf2_build_include_psymtabs (cu, comp_unit_die, pst); | |
8104 | ||
b4f54984 | 8105 | if (dwarf_read_debug) |
b926417a TT |
8106 | fprintf_unfiltered (gdb_stdlog, |
8107 | "Psymtab for %s unit @%s: %s - %s" | |
8108 | ", %d global, %d static syms\n", | |
8109 | per_cu->is_debug_types ? "type" : "comp", | |
8110 | sect_offset_str (per_cu->sect_off), | |
8111 | paddress (gdbarch, pst->text_low (objfile)), | |
8112 | paddress (gdbarch, pst->text_high (objfile)), | |
8113 | pst->n_global_syms, pst->n_static_syms); | |
0018ea6f DE |
8114 | } |
8115 | ||
8116 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8117 | Process compilation unit THIS_CU for a psymtab. */ | |
8118 | ||
8119 | static void | |
8120 | process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
b93601f3 TT |
8121 | int want_partial_unit, |
8122 | enum language pretend_language) | |
0018ea6f DE |
8123 | { |
8124 | /* If this compilation unit was already read in, free the | |
8125 | cached copy in order to read it in again. This is | |
8126 | necessary because we skipped some symbols when we first | |
8127 | read in the compilation unit (see load_partial_dies). | |
8128 | This problem could be avoided, but the benefit is unclear. */ | |
8129 | if (this_cu->cu != NULL) | |
8130 | free_one_cached_comp_unit (this_cu); | |
8131 | ||
f1902523 | 8132 | if (this_cu->is_debug_types) |
58f0c718 TT |
8133 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
8134 | build_type_psymtabs_reader, NULL); | |
f1902523 JK |
8135 | else |
8136 | { | |
8137 | process_psymtab_comp_unit_data info; | |
8138 | info.want_partial_unit = want_partial_unit; | |
8139 | info.pretend_language = pretend_language; | |
58f0c718 | 8140 | init_cutu_and_read_dies (this_cu, NULL, 0, 0, false, |
f1902523 JK |
8141 | process_psymtab_comp_unit_reader, &info); |
8142 | } | |
0018ea6f DE |
8143 | |
8144 | /* Age out any secondary CUs. */ | |
ed2dc618 | 8145 | age_cached_comp_units (this_cu->dwarf2_per_objfile); |
0018ea6f | 8146 | } |
f4dc4d17 DE |
8147 | |
8148 | /* Reader function for build_type_psymtabs. */ | |
8149 | ||
8150 | static void | |
8151 | build_type_psymtabs_reader (const struct die_reader_specs *reader, | |
d521ce57 | 8152 | const gdb_byte *info_ptr, |
f4dc4d17 DE |
8153 | struct die_info *type_unit_die, |
8154 | int has_children, | |
8155 | void *data) | |
8156 | { | |
ed2dc618 | 8157 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 8158 | = reader->cu->per_cu->dwarf2_per_objfile; |
f4dc4d17 DE |
8159 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8160 | struct dwarf2_cu *cu = reader->cu; | |
8161 | struct dwarf2_per_cu_data *per_cu = cu->per_cu; | |
0186c6a7 | 8162 | struct signatured_type *sig_type; |
f4dc4d17 DE |
8163 | struct type_unit_group *tu_group; |
8164 | struct attribute *attr; | |
8165 | struct partial_die_info *first_die; | |
8166 | CORE_ADDR lowpc, highpc; | |
8167 | struct partial_symtab *pst; | |
8168 | ||
8169 | gdb_assert (data == NULL); | |
0186c6a7 DE |
8170 | gdb_assert (per_cu->is_debug_types); |
8171 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 DE |
8172 | |
8173 | if (! has_children) | |
8174 | return; | |
8175 | ||
8176 | attr = dwarf2_attr_no_follow (type_unit_die, DW_AT_stmt_list); | |
094b34ac | 8177 | tu_group = get_type_unit_group (cu, attr); |
f4dc4d17 | 8178 | |
0186c6a7 | 8179 | VEC_safe_push (sig_type_ptr, tu_group->tus, sig_type); |
f4dc4d17 DE |
8180 | |
8181 | prepare_one_comp_unit (cu, type_unit_die, language_minimal); | |
f4dc4d17 DE |
8182 | pst = create_partial_symtab (per_cu, ""); |
8183 | pst->anonymous = 1; | |
8184 | ||
8185 | first_die = load_partial_dies (reader, info_ptr, 1); | |
8186 | ||
8187 | lowpc = (CORE_ADDR) -1; | |
8188 | highpc = (CORE_ADDR) 0; | |
8189 | scan_partial_symbols (first_die, &lowpc, &highpc, 0, cu); | |
8190 | ||
8763cede | 8191 | end_psymtab_common (objfile, pst); |
f4dc4d17 DE |
8192 | } |
8193 | ||
73051182 DE |
8194 | /* Struct used to sort TUs by their abbreviation table offset. */ |
8195 | ||
8196 | struct tu_abbrev_offset | |
8197 | { | |
b2bdb8cf SM |
8198 | tu_abbrev_offset (signatured_type *sig_type_, sect_offset abbrev_offset_) |
8199 | : sig_type (sig_type_), abbrev_offset (abbrev_offset_) | |
8200 | {} | |
8201 | ||
8202 | signatured_type *sig_type; | |
73051182 DE |
8203 | sect_offset abbrev_offset; |
8204 | }; | |
8205 | ||
484cf504 | 8206 | /* Helper routine for build_type_psymtabs_1, passed to std::sort. */ |
73051182 | 8207 | |
484cf504 TT |
8208 | static bool |
8209 | sort_tu_by_abbrev_offset (const struct tu_abbrev_offset &a, | |
8210 | const struct tu_abbrev_offset &b) | |
73051182 | 8211 | { |
484cf504 | 8212 | return a.abbrev_offset < b.abbrev_offset; |
73051182 DE |
8213 | } |
8214 | ||
8215 | /* Efficiently read all the type units. | |
8216 | This does the bulk of the work for build_type_psymtabs. | |
8217 | ||
8218 | The efficiency is because we sort TUs by the abbrev table they use and | |
8219 | only read each abbrev table once. In one program there are 200K TUs | |
8220 | sharing 8K abbrev tables. | |
8221 | ||
8222 | The main purpose of this function is to support building the | |
8223 | dwarf2_per_objfile->type_unit_groups table. | |
8224 | TUs typically share the DW_AT_stmt_list of the CU they came from, so we | |
8225 | can collapse the search space by grouping them by stmt_list. | |
8226 | The savings can be significant, in the same program from above the 200K TUs | |
8227 | share 8K stmt_list tables. | |
8228 | ||
8229 | FUNC is expected to call get_type_unit_group, which will create the | |
8230 | struct type_unit_group if necessary and add it to | |
8231 | dwarf2_per_objfile->type_unit_groups. */ | |
8232 | ||
8233 | static void | |
ed2dc618 | 8234 | build_type_psymtabs_1 (struct dwarf2_per_objfile *dwarf2_per_objfile) |
73051182 | 8235 | { |
73051182 | 8236 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; |
685af9cd | 8237 | abbrev_table_up abbrev_table; |
73051182 | 8238 | sect_offset abbrev_offset; |
73051182 DE |
8239 | |
8240 | /* It's up to the caller to not call us multiple times. */ | |
8241 | gdb_assert (dwarf2_per_objfile->type_unit_groups == NULL); | |
8242 | ||
b2bdb8cf | 8243 | if (dwarf2_per_objfile->all_type_units.empty ()) |
73051182 DE |
8244 | return; |
8245 | ||
8246 | /* TUs typically share abbrev tables, and there can be way more TUs than | |
8247 | abbrev tables. Sort by abbrev table to reduce the number of times we | |
8248 | read each abbrev table in. | |
8249 | Alternatives are to punt or to maintain a cache of abbrev tables. | |
8250 | This is simpler and efficient enough for now. | |
8251 | ||
8252 | Later we group TUs by their DW_AT_stmt_list value (as this defines the | |
8253 | symtab to use). Typically TUs with the same abbrev offset have the same | |
8254 | stmt_list value too so in practice this should work well. | |
8255 | ||
8256 | The basic algorithm here is: | |
8257 | ||
8258 | sort TUs by abbrev table | |
8259 | for each TU with same abbrev table: | |
8260 | read abbrev table if first user | |
8261 | read TU top level DIE | |
8262 | [IWBN if DWO skeletons had DW_AT_stmt_list] | |
8263 | call FUNC */ | |
8264 | ||
b4f54984 | 8265 | if (dwarf_read_debug) |
73051182 DE |
8266 | fprintf_unfiltered (gdb_stdlog, "Building type unit groups ...\n"); |
8267 | ||
8268 | /* Sort in a separate table to maintain the order of all_type_units | |
8269 | for .gdb_index: TU indices directly index all_type_units. */ | |
b2bdb8cf SM |
8270 | std::vector<tu_abbrev_offset> sorted_by_abbrev; |
8271 | sorted_by_abbrev.reserve (dwarf2_per_objfile->all_type_units.size ()); | |
8272 | ||
8273 | for (signatured_type *sig_type : dwarf2_per_objfile->all_type_units) | |
8274 | sorted_by_abbrev.emplace_back | |
8275 | (sig_type, read_abbrev_offset (dwarf2_per_objfile, | |
8276 | sig_type->per_cu.section, | |
8277 | sig_type->per_cu.sect_off)); | |
73051182 | 8278 | |
484cf504 TT |
8279 | std::sort (sorted_by_abbrev.begin (), sorted_by_abbrev.end (), |
8280 | sort_tu_by_abbrev_offset); | |
73051182 | 8281 | |
9c541725 | 8282 | abbrev_offset = (sect_offset) ~(unsigned) 0; |
73051182 | 8283 | |
b2bdb8cf | 8284 | for (const tu_abbrev_offset &tu : sorted_by_abbrev) |
73051182 | 8285 | { |
73051182 DE |
8286 | /* Switch to the next abbrev table if necessary. */ |
8287 | if (abbrev_table == NULL | |
b2bdb8cf | 8288 | || tu.abbrev_offset != abbrev_offset) |
73051182 | 8289 | { |
b2bdb8cf | 8290 | abbrev_offset = tu.abbrev_offset; |
73051182 | 8291 | abbrev_table = |
ed2dc618 SM |
8292 | abbrev_table_read_table (dwarf2_per_objfile, |
8293 | &dwarf2_per_objfile->abbrev, | |
73051182 DE |
8294 | abbrev_offset); |
8295 | ++tu_stats->nr_uniq_abbrev_tables; | |
8296 | } | |
8297 | ||
b2bdb8cf | 8298 | init_cutu_and_read_dies (&tu.sig_type->per_cu, abbrev_table.get (), |
58f0c718 | 8299 | 0, 0, false, build_type_psymtabs_reader, NULL); |
73051182 | 8300 | } |
6aa5f3a6 | 8301 | } |
73051182 | 8302 | |
6aa5f3a6 DE |
8303 | /* Print collected type unit statistics. */ |
8304 | ||
8305 | static void | |
ed2dc618 | 8306 | print_tu_stats (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8307 | { |
8308 | struct tu_stats *tu_stats = &dwarf2_per_objfile->tu_stats; | |
8309 | ||
8310 | fprintf_unfiltered (gdb_stdlog, "Type unit statistics:\n"); | |
b2bdb8cf SM |
8311 | fprintf_unfiltered (gdb_stdlog, " %zu TUs\n", |
8312 | dwarf2_per_objfile->all_type_units.size ()); | |
6aa5f3a6 DE |
8313 | fprintf_unfiltered (gdb_stdlog, " %d uniq abbrev tables\n", |
8314 | tu_stats->nr_uniq_abbrev_tables); | |
8315 | fprintf_unfiltered (gdb_stdlog, " %d symtabs from stmt_list entries\n", | |
8316 | tu_stats->nr_symtabs); | |
8317 | fprintf_unfiltered (gdb_stdlog, " %d symtab sharers\n", | |
8318 | tu_stats->nr_symtab_sharers); | |
8319 | fprintf_unfiltered (gdb_stdlog, " %d type units without a stmt_list\n", | |
8320 | tu_stats->nr_stmt_less_type_units); | |
8321 | fprintf_unfiltered (gdb_stdlog, " %d all_type_units reallocs\n", | |
8322 | tu_stats->nr_all_type_units_reallocs); | |
73051182 DE |
8323 | } |
8324 | ||
f4dc4d17 DE |
8325 | /* Traversal function for build_type_psymtabs. */ |
8326 | ||
8327 | static int | |
8328 | build_type_psymtab_dependencies (void **slot, void *info) | |
8329 | { | |
ed2dc618 SM |
8330 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8331 | = (struct dwarf2_per_objfile *) info; | |
f4dc4d17 DE |
8332 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
8333 | struct type_unit_group *tu_group = (struct type_unit_group *) *slot; | |
094b34ac | 8334 | struct dwarf2_per_cu_data *per_cu = &tu_group->per_cu; |
f4dc4d17 | 8335 | struct partial_symtab *pst = per_cu->v.psymtab; |
0186c6a7 DE |
8336 | int len = VEC_length (sig_type_ptr, tu_group->tus); |
8337 | struct signatured_type *iter; | |
f4dc4d17 DE |
8338 | int i; |
8339 | ||
8340 | gdb_assert (len > 0); | |
0186c6a7 | 8341 | gdb_assert (IS_TYPE_UNIT_GROUP (per_cu)); |
f4dc4d17 DE |
8342 | |
8343 | pst->number_of_dependencies = len; | |
a9342b62 | 8344 | pst->dependencies = objfile->partial_symtabs->allocate_dependencies (len); |
f4dc4d17 | 8345 | for (i = 0; |
0186c6a7 | 8346 | VEC_iterate (sig_type_ptr, tu_group->tus, i, iter); |
f4dc4d17 DE |
8347 | ++i) |
8348 | { | |
0186c6a7 DE |
8349 | gdb_assert (iter->per_cu.is_debug_types); |
8350 | pst->dependencies[i] = iter->per_cu.v.psymtab; | |
796a7ff8 | 8351 | iter->type_unit_group = tu_group; |
f4dc4d17 DE |
8352 | } |
8353 | ||
0186c6a7 | 8354 | VEC_free (sig_type_ptr, tu_group->tus); |
348e048f DE |
8355 | |
8356 | return 1; | |
8357 | } | |
8358 | ||
8359 | /* Subroutine of dwarf2_build_psymtabs_hard to simplify it. | |
8360 | Build partial symbol tables for the .debug_types comp-units. */ | |
8361 | ||
8362 | static void | |
ed2dc618 | 8363 | build_type_psymtabs (struct dwarf2_per_objfile *dwarf2_per_objfile) |
348e048f | 8364 | { |
ed2dc618 | 8365 | if (! create_all_type_units (dwarf2_per_objfile)) |
348e048f DE |
8366 | return; |
8367 | ||
ed2dc618 | 8368 | build_type_psymtabs_1 (dwarf2_per_objfile); |
6aa5f3a6 | 8369 | } |
f4dc4d17 | 8370 | |
6aa5f3a6 DE |
8371 | /* Traversal function for process_skeletonless_type_unit. |
8372 | Read a TU in a DWO file and build partial symbols for it. */ | |
8373 | ||
8374 | static int | |
8375 | process_skeletonless_type_unit (void **slot, void *info) | |
8376 | { | |
8377 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
ed2dc618 SM |
8378 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8379 | = (struct dwarf2_per_objfile *) info; | |
6aa5f3a6 DE |
8380 | struct signatured_type find_entry, *entry; |
8381 | ||
8382 | /* If this TU doesn't exist in the global table, add it and read it in. */ | |
8383 | ||
8384 | if (dwarf2_per_objfile->signatured_types == NULL) | |
8385 | { | |
8386 | dwarf2_per_objfile->signatured_types | |
ed2dc618 | 8387 | = allocate_signatured_type_table (dwarf2_per_objfile->objfile); |
6aa5f3a6 DE |
8388 | } |
8389 | ||
8390 | find_entry.signature = dwo_unit->signature; | |
8391 | slot = htab_find_slot (dwarf2_per_objfile->signatured_types, &find_entry, | |
8392 | INSERT); | |
8393 | /* If we've already seen this type there's nothing to do. What's happening | |
8394 | is we're doing our own version of comdat-folding here. */ | |
8395 | if (*slot != NULL) | |
8396 | return 1; | |
8397 | ||
8398 | /* This does the job that create_all_type_units would have done for | |
8399 | this TU. */ | |
ed2dc618 SM |
8400 | entry = add_type_unit (dwarf2_per_objfile, dwo_unit->signature, slot); |
8401 | fill_in_sig_entry_from_dwo_entry (dwarf2_per_objfile, entry, dwo_unit); | |
6aa5f3a6 DE |
8402 | *slot = entry; |
8403 | ||
8404 | /* This does the job that build_type_psymtabs_1 would have done. */ | |
58f0c718 | 8405 | init_cutu_and_read_dies (&entry->per_cu, NULL, 0, 0, false, |
6aa5f3a6 DE |
8406 | build_type_psymtabs_reader, NULL); |
8407 | ||
8408 | return 1; | |
8409 | } | |
8410 | ||
8411 | /* Traversal function for process_skeletonless_type_units. */ | |
8412 | ||
8413 | static int | |
8414 | process_dwo_file_for_skeletonless_type_units (void **slot, void *info) | |
8415 | { | |
8416 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
8417 | ||
8418 | if (dwo_file->tus != NULL) | |
8419 | { | |
8420 | htab_traverse_noresize (dwo_file->tus, | |
8421 | process_skeletonless_type_unit, info); | |
8422 | } | |
8423 | ||
8424 | return 1; | |
8425 | } | |
8426 | ||
8427 | /* Scan all TUs of DWO files, verifying we've processed them. | |
8428 | This is needed in case a TU was emitted without its skeleton. | |
8429 | Note: This can't be done until we know what all the DWO files are. */ | |
8430 | ||
8431 | static void | |
ed2dc618 | 8432 | process_skeletonless_type_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
6aa5f3a6 DE |
8433 | { |
8434 | /* Skeletonless TUs in DWP files without .gdb_index is not supported yet. */ | |
ed2dc618 | 8435 | if (get_dwp_file (dwarf2_per_objfile) == NULL |
6aa5f3a6 DE |
8436 | && dwarf2_per_objfile->dwo_files != NULL) |
8437 | { | |
8438 | htab_traverse_noresize (dwarf2_per_objfile->dwo_files, | |
8439 | process_dwo_file_for_skeletonless_type_units, | |
ed2dc618 | 8440 | dwarf2_per_objfile); |
6aa5f3a6 | 8441 | } |
348e048f DE |
8442 | } |
8443 | ||
ed2dc618 | 8444 | /* Compute the 'user' field for each psymtab in DWARF2_PER_OBJFILE. */ |
95554aad TT |
8445 | |
8446 | static void | |
ed2dc618 | 8447 | set_partial_user (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 8448 | { |
b76e467d | 8449 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
95554aad | 8450 | { |
95554aad | 8451 | struct partial_symtab *pst = per_cu->v.psymtab; |
95554aad | 8452 | |
36586728 TT |
8453 | if (pst == NULL) |
8454 | continue; | |
8455 | ||
b76e467d | 8456 | for (int j = 0; j < pst->number_of_dependencies; ++j) |
95554aad TT |
8457 | { |
8458 | /* Set the 'user' field only if it is not already set. */ | |
8459 | if (pst->dependencies[j]->user == NULL) | |
8460 | pst->dependencies[j]->user = pst; | |
8461 | } | |
8462 | } | |
8463 | } | |
8464 | ||
93311388 DE |
8465 | /* Build the partial symbol table by doing a quick pass through the |
8466 | .debug_info and .debug_abbrev sections. */ | |
72bf9492 | 8467 | |
93311388 | 8468 | static void |
ed2dc618 | 8469 | dwarf2_build_psymtabs_hard (struct dwarf2_per_objfile *dwarf2_per_objfile) |
93311388 | 8470 | { |
ed2dc618 | 8471 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
93311388 | 8472 | |
b4f54984 | 8473 | if (dwarf_read_debug) |
45cfd468 DE |
8474 | { |
8475 | fprintf_unfiltered (gdb_stdlog, "Building psymtabs of objfile %s ...\n", | |
4262abfb | 8476 | objfile_name (objfile)); |
45cfd468 DE |
8477 | } |
8478 | ||
98bfdba5 PA |
8479 | dwarf2_per_objfile->reading_partial_symbols = 1; |
8480 | ||
be391dca | 8481 | dwarf2_read_section (objfile, &dwarf2_per_objfile->info); |
91c24f0a | 8482 | |
93311388 DE |
8483 | /* Any cached compilation units will be linked by the per-objfile |
8484 | read_in_chain. Make sure to free them when we're done. */ | |
11ed8cad | 8485 | free_cached_comp_units freer (dwarf2_per_objfile); |
72bf9492 | 8486 | |
ed2dc618 | 8487 | build_type_psymtabs (dwarf2_per_objfile); |
348e048f | 8488 | |
ed2dc618 | 8489 | create_all_comp_units (dwarf2_per_objfile); |
c906108c | 8490 | |
60606b2c TT |
8491 | /* Create a temporary address map on a temporary obstack. We later |
8492 | copy this to the final obstack. */ | |
8268c778 | 8493 | auto_obstack temp_obstack; |
791afaa2 TT |
8494 | |
8495 | scoped_restore save_psymtabs_addrmap | |
d320c2b5 | 8496 | = make_scoped_restore (&objfile->partial_symtabs->psymtabs_addrmap, |
791afaa2 | 8497 | addrmap_create_mutable (&temp_obstack)); |
72bf9492 | 8498 | |
b76e467d SM |
8499 | for (dwarf2_per_cu_data *per_cu : dwarf2_per_objfile->all_comp_units) |
8500 | process_psymtab_comp_unit (per_cu, 0, language_minimal); | |
ff013f42 | 8501 | |
6aa5f3a6 | 8502 | /* This has to wait until we read the CUs, we need the list of DWOs. */ |
ed2dc618 | 8503 | process_skeletonless_type_units (dwarf2_per_objfile); |
6aa5f3a6 DE |
8504 | |
8505 | /* Now that all TUs have been processed we can fill in the dependencies. */ | |
8506 | if (dwarf2_per_objfile->type_unit_groups != NULL) | |
8507 | { | |
8508 | htab_traverse_noresize (dwarf2_per_objfile->type_unit_groups, | |
ed2dc618 | 8509 | build_type_psymtab_dependencies, dwarf2_per_objfile); |
6aa5f3a6 DE |
8510 | } |
8511 | ||
b4f54984 | 8512 | if (dwarf_read_debug) |
ed2dc618 | 8513 | print_tu_stats (dwarf2_per_objfile); |
6aa5f3a6 | 8514 | |
ed2dc618 | 8515 | set_partial_user (dwarf2_per_objfile); |
95554aad | 8516 | |
d320c2b5 TT |
8517 | objfile->partial_symtabs->psymtabs_addrmap |
8518 | = addrmap_create_fixed (objfile->partial_symtabs->psymtabs_addrmap, | |
5923a04c | 8519 | objfile->partial_symtabs->obstack ()); |
791afaa2 TT |
8520 | /* At this point we want to keep the address map. */ |
8521 | save_psymtabs_addrmap.release (); | |
ff013f42 | 8522 | |
b4f54984 | 8523 | if (dwarf_read_debug) |
45cfd468 | 8524 | fprintf_unfiltered (gdb_stdlog, "Done building psymtabs of %s\n", |
4262abfb | 8525 | objfile_name (objfile)); |
ae038cb0 DJ |
8526 | } |
8527 | ||
3019eac3 | 8528 | /* die_reader_func for load_partial_comp_unit. */ |
ae038cb0 DJ |
8529 | |
8530 | static void | |
dee91e82 | 8531 | load_partial_comp_unit_reader (const struct die_reader_specs *reader, |
d521ce57 | 8532 | const gdb_byte *info_ptr, |
dee91e82 DE |
8533 | struct die_info *comp_unit_die, |
8534 | int has_children, | |
8535 | void *data) | |
ae038cb0 | 8536 | { |
dee91e82 | 8537 | struct dwarf2_cu *cu = reader->cu; |
ae038cb0 | 8538 | |
95554aad | 8539 | prepare_one_comp_unit (cu, comp_unit_die, language_minimal); |
ae038cb0 | 8540 | |
ae038cb0 DJ |
8541 | /* Check if comp unit has_children. |
8542 | If so, read the rest of the partial symbols from this comp unit. | |
0963b4bd | 8543 | If not, there's no more debug_info for this comp unit. */ |
d85a05f0 | 8544 | if (has_children) |
dee91e82 DE |
8545 | load_partial_dies (reader, info_ptr, 0); |
8546 | } | |
98bfdba5 | 8547 | |
dee91e82 DE |
8548 | /* Load the partial DIEs for a secondary CU into memory. |
8549 | This is also used when rereading a primary CU with load_all_dies. */ | |
c5b7e1cb | 8550 | |
dee91e82 DE |
8551 | static void |
8552 | load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu) | |
8553 | { | |
58f0c718 | 8554 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, false, |
f4dc4d17 | 8555 | load_partial_comp_unit_reader, NULL); |
ae038cb0 DJ |
8556 | } |
8557 | ||
ae038cb0 | 8558 | static void |
ed2dc618 | 8559 | read_comp_units_from_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
36586728 | 8560 | struct dwarf2_section_info *section, |
f1902523 | 8561 | struct dwarf2_section_info *abbrev_section, |
b76e467d | 8562 | unsigned int is_dwz) |
ae038cb0 | 8563 | { |
d521ce57 | 8564 | const gdb_byte *info_ptr; |
ed2dc618 | 8565 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
be391dca | 8566 | |
b4f54984 | 8567 | if (dwarf_read_debug) |
bf6af496 | 8568 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s\n", |
a32a8923 DE |
8569 | get_section_name (section), |
8570 | get_section_file_name (section)); | |
bf6af496 | 8571 | |
36586728 | 8572 | dwarf2_read_section (objfile, section); |
ae038cb0 | 8573 | |
36586728 | 8574 | info_ptr = section->buffer; |
6e70227d | 8575 | |
36586728 | 8576 | while (info_ptr < section->buffer + section->size) |
ae038cb0 | 8577 | { |
ae038cb0 | 8578 | struct dwarf2_per_cu_data *this_cu; |
ae038cb0 | 8579 | |
9c541725 | 8580 | sect_offset sect_off = (sect_offset) (info_ptr - section->buffer); |
ae038cb0 | 8581 | |
f1902523 | 8582 | comp_unit_head cu_header; |
ed2dc618 SM |
8583 | read_and_check_comp_unit_head (dwarf2_per_objfile, &cu_header, section, |
8584 | abbrev_section, info_ptr, | |
8585 | rcuh_kind::COMPILE); | |
ae038cb0 DJ |
8586 | |
8587 | /* Save the compilation unit for later lookup. */ | |
f1902523 JK |
8588 | if (cu_header.unit_type != DW_UT_type) |
8589 | { | |
8590 | this_cu = XOBNEW (&objfile->objfile_obstack, | |
8591 | struct dwarf2_per_cu_data); | |
8592 | memset (this_cu, 0, sizeof (*this_cu)); | |
8593 | } | |
8594 | else | |
8595 | { | |
8596 | auto sig_type = XOBNEW (&objfile->objfile_obstack, | |
8597 | struct signatured_type); | |
8598 | memset (sig_type, 0, sizeof (*sig_type)); | |
8599 | sig_type->signature = cu_header.signature; | |
8600 | sig_type->type_offset_in_tu = cu_header.type_cu_offset_in_tu; | |
8601 | this_cu = &sig_type->per_cu; | |
8602 | } | |
8603 | this_cu->is_debug_types = (cu_header.unit_type == DW_UT_type); | |
9c541725 | 8604 | this_cu->sect_off = sect_off; |
f1902523 | 8605 | this_cu->length = cu_header.length + cu_header.initial_length_size; |
36586728 | 8606 | this_cu->is_dwz = is_dwz; |
e3b94546 | 8607 | this_cu->dwarf2_per_objfile = dwarf2_per_objfile; |
8a0459fd | 8608 | this_cu->section = section; |
ae038cb0 | 8609 | |
b76e467d | 8610 | dwarf2_per_objfile->all_comp_units.push_back (this_cu); |
ae038cb0 DJ |
8611 | |
8612 | info_ptr = info_ptr + this_cu->length; | |
8613 | } | |
36586728 TT |
8614 | } |
8615 | ||
8616 | /* Create a list of all compilation units in OBJFILE. | |
8617 | This is only done for -readnow and building partial symtabs. */ | |
8618 | ||
8619 | static void | |
ed2dc618 | 8620 | create_all_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
36586728 | 8621 | { |
b76e467d | 8622 | gdb_assert (dwarf2_per_objfile->all_comp_units.empty ()); |
ed2dc618 | 8623 | read_comp_units_from_section (dwarf2_per_objfile, &dwarf2_per_objfile->info, |
b76e467d | 8624 | &dwarf2_per_objfile->abbrev, 0); |
36586728 | 8625 | |
b76e467d | 8626 | dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
4db1a1dc | 8627 | if (dwz != NULL) |
ed2dc618 | 8628 | read_comp_units_from_section (dwarf2_per_objfile, &dwz->info, &dwz->abbrev, |
b76e467d | 8629 | 1); |
c906108c SS |
8630 | } |
8631 | ||
5734ee8b | 8632 | /* Process all loaded DIEs for compilation unit CU, starting at |
cdc07690 | 8633 | FIRST_DIE. The caller should pass SET_ADDRMAP == 1 if the compilation |
5734ee8b | 8634 | unit DIE did not have PC info (DW_AT_low_pc and DW_AT_high_pc, or |
cdc07690 YQ |
8635 | DW_AT_ranges). See the comments of add_partial_subprogram on how |
8636 | SET_ADDRMAP is used and how *LOWPC and *HIGHPC are updated. */ | |
c906108c | 8637 | |
72bf9492 DJ |
8638 | static void |
8639 | scan_partial_symbols (struct partial_die_info *first_die, CORE_ADDR *lowpc, | |
cdc07690 YQ |
8640 | CORE_ADDR *highpc, int set_addrmap, |
8641 | struct dwarf2_cu *cu) | |
c906108c | 8642 | { |
72bf9492 | 8643 | struct partial_die_info *pdi; |
c906108c | 8644 | |
91c24f0a DC |
8645 | /* Now, march along the PDI's, descending into ones which have |
8646 | interesting children but skipping the children of the other ones, | |
8647 | until we reach the end of the compilation unit. */ | |
c906108c | 8648 | |
72bf9492 | 8649 | pdi = first_die; |
91c24f0a | 8650 | |
72bf9492 DJ |
8651 | while (pdi != NULL) |
8652 | { | |
52356b79 | 8653 | pdi->fixup (cu); |
c906108c | 8654 | |
f55ee35c | 8655 | /* Anonymous namespaces or modules have no name but have interesting |
91c24f0a DC |
8656 | children, so we need to look at them. Ditto for anonymous |
8657 | enums. */ | |
933c6fe4 | 8658 | |
72bf9492 | 8659 | if (pdi->name != NULL || pdi->tag == DW_TAG_namespace |
95554aad | 8660 | || pdi->tag == DW_TAG_module || pdi->tag == DW_TAG_enumeration_type |
b1dc1806 XR |
8661 | || pdi->tag == DW_TAG_imported_unit |
8662 | || pdi->tag == DW_TAG_inlined_subroutine) | |
c906108c | 8663 | { |
72bf9492 | 8664 | switch (pdi->tag) |
c906108c SS |
8665 | { |
8666 | case DW_TAG_subprogram: | |
b1dc1806 | 8667 | case DW_TAG_inlined_subroutine: |
cdc07690 | 8668 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
c906108c | 8669 | break; |
72929c62 | 8670 | case DW_TAG_constant: |
c906108c SS |
8671 | case DW_TAG_variable: |
8672 | case DW_TAG_typedef: | |
91c24f0a | 8673 | case DW_TAG_union_type: |
72bf9492 | 8674 | if (!pdi->is_declaration) |
63d06c5c | 8675 | { |
72bf9492 | 8676 | add_partial_symbol (pdi, cu); |
63d06c5c DC |
8677 | } |
8678 | break; | |
c906108c | 8679 | case DW_TAG_class_type: |
680b30c7 | 8680 | case DW_TAG_interface_type: |
c906108c | 8681 | case DW_TAG_structure_type: |
72bf9492 | 8682 | if (!pdi->is_declaration) |
c906108c | 8683 | { |
72bf9492 | 8684 | add_partial_symbol (pdi, cu); |
c906108c | 8685 | } |
b7fee5a3 KS |
8686 | if ((cu->language == language_rust |
8687 | || cu->language == language_cplus) && pdi->has_children) | |
e98c9e7c TT |
8688 | scan_partial_symbols (pdi->die_child, lowpc, highpc, |
8689 | set_addrmap, cu); | |
c906108c | 8690 | break; |
91c24f0a | 8691 | case DW_TAG_enumeration_type: |
72bf9492 DJ |
8692 | if (!pdi->is_declaration) |
8693 | add_partial_enumeration (pdi, cu); | |
c906108c SS |
8694 | break; |
8695 | case DW_TAG_base_type: | |
a02abb62 | 8696 | case DW_TAG_subrange_type: |
c906108c | 8697 | /* File scope base type definitions are added to the partial |
c5aa993b | 8698 | symbol table. */ |
72bf9492 | 8699 | add_partial_symbol (pdi, cu); |
c906108c | 8700 | break; |
d9fa45fe | 8701 | case DW_TAG_namespace: |
cdc07690 | 8702 | add_partial_namespace (pdi, lowpc, highpc, set_addrmap, cu); |
91c24f0a | 8703 | break; |
5d7cb8df | 8704 | case DW_TAG_module: |
cdc07690 | 8705 | add_partial_module (pdi, lowpc, highpc, set_addrmap, cu); |
5d7cb8df | 8706 | break; |
95554aad TT |
8707 | case DW_TAG_imported_unit: |
8708 | { | |
8709 | struct dwarf2_per_cu_data *per_cu; | |
8710 | ||
f4dc4d17 DE |
8711 | /* For now we don't handle imported units in type units. */ |
8712 | if (cu->per_cu->is_debug_types) | |
8713 | { | |
8714 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
8715 | " supported in type units [in module %s]"), | |
518817b3 | 8716 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
8717 | } |
8718 | ||
e3b94546 SM |
8719 | per_cu = dwarf2_find_containing_comp_unit |
8720 | (pdi->d.sect_off, pdi->is_dwz, | |
518817b3 | 8721 | cu->per_cu->dwarf2_per_objfile); |
95554aad TT |
8722 | |
8723 | /* Go read the partial unit, if needed. */ | |
8724 | if (per_cu->v.psymtab == NULL) | |
b93601f3 | 8725 | process_psymtab_comp_unit (per_cu, 1, cu->language); |
95554aad | 8726 | |
f4dc4d17 | 8727 | VEC_safe_push (dwarf2_per_cu_ptr, |
796a7ff8 | 8728 | cu->per_cu->imported_symtabs, per_cu); |
95554aad TT |
8729 | } |
8730 | break; | |
74921315 KS |
8731 | case DW_TAG_imported_declaration: |
8732 | add_partial_symbol (pdi, cu); | |
8733 | break; | |
c906108c SS |
8734 | default: |
8735 | break; | |
8736 | } | |
8737 | } | |
8738 | ||
72bf9492 DJ |
8739 | /* If the die has a sibling, skip to the sibling. */ |
8740 | ||
8741 | pdi = pdi->die_sibling; | |
8742 | } | |
8743 | } | |
8744 | ||
8745 | /* Functions used to compute the fully scoped name of a partial DIE. | |
91c24f0a | 8746 | |
72bf9492 | 8747 | Normally, this is simple. For C++, the parent DIE's fully scoped |
9c37b5ae | 8748 | name is concatenated with "::" and the partial DIE's name. |
72bf9492 DJ |
8749 | Enumerators are an exception; they use the scope of their parent |
8750 | enumeration type, i.e. the name of the enumeration type is not | |
8751 | prepended to the enumerator. | |
91c24f0a | 8752 | |
72bf9492 DJ |
8753 | There are two complexities. One is DW_AT_specification; in this |
8754 | case "parent" means the parent of the target of the specification, | |
8755 | instead of the direct parent of the DIE. The other is compilers | |
8756 | which do not emit DW_TAG_namespace; in this case we try to guess | |
8757 | the fully qualified name of structure types from their members' | |
8758 | linkage names. This must be done using the DIE's children rather | |
8759 | than the children of any DW_AT_specification target. We only need | |
8760 | to do this for structures at the top level, i.e. if the target of | |
8761 | any DW_AT_specification (if any; otherwise the DIE itself) does not | |
8762 | have a parent. */ | |
8763 | ||
8764 | /* Compute the scope prefix associated with PDI's parent, in | |
8765 | compilation unit CU. The result will be allocated on CU's | |
8766 | comp_unit_obstack, or a copy of the already allocated PDI->NAME | |
8767 | field. NULL is returned if no prefix is necessary. */ | |
15d034d0 | 8768 | static const char * |
72bf9492 DJ |
8769 | partial_die_parent_scope (struct partial_die_info *pdi, |
8770 | struct dwarf2_cu *cu) | |
8771 | { | |
15d034d0 | 8772 | const char *grandparent_scope; |
72bf9492 | 8773 | struct partial_die_info *parent, *real_pdi; |
91c24f0a | 8774 | |
72bf9492 DJ |
8775 | /* We need to look at our parent DIE; if we have a DW_AT_specification, |
8776 | then this means the parent of the specification DIE. */ | |
8777 | ||
8778 | real_pdi = pdi; | |
72bf9492 | 8779 | while (real_pdi->has_specification) |
fb816e8b | 8780 | { |
122cf0f2 AB |
8781 | auto res = find_partial_die (real_pdi->spec_offset, |
8782 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
8783 | real_pdi = res.pdi; |
8784 | cu = res.cu; | |
8785 | } | |
72bf9492 DJ |
8786 | |
8787 | parent = real_pdi->die_parent; | |
8788 | if (parent == NULL) | |
8789 | return NULL; | |
8790 | ||
8791 | if (parent->scope_set) | |
8792 | return parent->scope; | |
8793 | ||
52356b79 | 8794 | parent->fixup (cu); |
72bf9492 | 8795 | |
10b3939b | 8796 | grandparent_scope = partial_die_parent_scope (parent, cu); |
72bf9492 | 8797 | |
acebe513 UW |
8798 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
8799 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
8800 | Work around this problem here. */ | |
8801 | if (cu->language == language_cplus | |
6e70227d | 8802 | && parent->tag == DW_TAG_namespace |
acebe513 UW |
8803 | && strcmp (parent->name, "::") == 0 |
8804 | && grandparent_scope == NULL) | |
8805 | { | |
8806 | parent->scope = NULL; | |
8807 | parent->scope_set = 1; | |
8808 | return NULL; | |
8809 | } | |
8810 | ||
9c6c53f7 SA |
8811 | if (pdi->tag == DW_TAG_enumerator) |
8812 | /* Enumerators should not get the name of the enumeration as a prefix. */ | |
8813 | parent->scope = grandparent_scope; | |
8814 | else if (parent->tag == DW_TAG_namespace | |
f55ee35c | 8815 | || parent->tag == DW_TAG_module |
72bf9492 DJ |
8816 | || parent->tag == DW_TAG_structure_type |
8817 | || parent->tag == DW_TAG_class_type | |
680b30c7 | 8818 | || parent->tag == DW_TAG_interface_type |
ceeb3d5a TT |
8819 | || parent->tag == DW_TAG_union_type |
8820 | || parent->tag == DW_TAG_enumeration_type) | |
72bf9492 DJ |
8821 | { |
8822 | if (grandparent_scope == NULL) | |
8823 | parent->scope = parent->name; | |
8824 | else | |
3e43a32a MS |
8825 | parent->scope = typename_concat (&cu->comp_unit_obstack, |
8826 | grandparent_scope, | |
f55ee35c | 8827 | parent->name, 0, cu); |
72bf9492 | 8828 | } |
72bf9492 DJ |
8829 | else |
8830 | { | |
8831 | /* FIXME drow/2004-04-01: What should we be doing with | |
8832 | function-local names? For partial symbols, we should probably be | |
8833 | ignoring them. */ | |
fa9c3fa0 TT |
8834 | complaint (_("unhandled containing DIE tag %s for DIE at %s"), |
8835 | dwarf_tag_name (parent->tag), | |
8836 | sect_offset_str (pdi->sect_off)); | |
72bf9492 | 8837 | parent->scope = grandparent_scope; |
c906108c SS |
8838 | } |
8839 | ||
72bf9492 DJ |
8840 | parent->scope_set = 1; |
8841 | return parent->scope; | |
8842 | } | |
8843 | ||
8844 | /* Return the fully scoped name associated with PDI, from compilation unit | |
8845 | CU. The result will be allocated with malloc. */ | |
4568ecf9 | 8846 | |
72bf9492 DJ |
8847 | static char * |
8848 | partial_die_full_name (struct partial_die_info *pdi, | |
8849 | struct dwarf2_cu *cu) | |
8850 | { | |
15d034d0 | 8851 | const char *parent_scope; |
72bf9492 | 8852 | |
98bfdba5 PA |
8853 | /* If this is a template instantiation, we can not work out the |
8854 | template arguments from partial DIEs. So, unfortunately, we have | |
8855 | to go through the full DIEs. At least any work we do building | |
8856 | types here will be reused if full symbols are loaded later. */ | |
8857 | if (pdi->has_template_arguments) | |
8858 | { | |
52356b79 | 8859 | pdi->fixup (cu); |
98bfdba5 PA |
8860 | |
8861 | if (pdi->name != NULL && strchr (pdi->name, '<') == NULL) | |
8862 | { | |
8863 | struct die_info *die; | |
8864 | struct attribute attr; | |
8865 | struct dwarf2_cu *ref_cu = cu; | |
8866 | ||
b64f50a1 | 8867 | /* DW_FORM_ref_addr is using section offset. */ |
b4069958 | 8868 | attr.name = (enum dwarf_attribute) 0; |
98bfdba5 | 8869 | attr.form = DW_FORM_ref_addr; |
9c541725 | 8870 | attr.u.unsnd = to_underlying (pdi->sect_off); |
98bfdba5 PA |
8871 | die = follow_die_ref (NULL, &attr, &ref_cu); |
8872 | ||
8873 | return xstrdup (dwarf2_full_name (NULL, die, ref_cu)); | |
8874 | } | |
8875 | } | |
8876 | ||
72bf9492 DJ |
8877 | parent_scope = partial_die_parent_scope (pdi, cu); |
8878 | if (parent_scope == NULL) | |
8879 | return NULL; | |
8880 | else | |
f55ee35c | 8881 | return typename_concat (NULL, parent_scope, pdi->name, 0, cu); |
c906108c SS |
8882 | } |
8883 | ||
8884 | static void | |
72bf9492 | 8885 | add_partial_symbol (struct partial_die_info *pdi, struct dwarf2_cu *cu) |
c906108c | 8886 | { |
518817b3 SM |
8887 | struct dwarf2_per_objfile *dwarf2_per_objfile |
8888 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 8889 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 8890 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 8891 | CORE_ADDR addr = 0; |
15d034d0 | 8892 | const char *actual_name = NULL; |
e142c38c | 8893 | CORE_ADDR baseaddr; |
15d034d0 | 8894 | char *built_actual_name; |
e142c38c DJ |
8895 | |
8896 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 8897 | |
15d034d0 TT |
8898 | built_actual_name = partial_die_full_name (pdi, cu); |
8899 | if (built_actual_name != NULL) | |
8900 | actual_name = built_actual_name; | |
63d06c5c | 8901 | |
72bf9492 DJ |
8902 | if (actual_name == NULL) |
8903 | actual_name = pdi->name; | |
8904 | ||
c906108c SS |
8905 | switch (pdi->tag) |
8906 | { | |
b1dc1806 | 8907 | case DW_TAG_inlined_subroutine: |
c906108c | 8908 | case DW_TAG_subprogram: |
79748972 TT |
8909 | addr = (gdbarch_adjust_dwarf2_addr (gdbarch, pdi->lowpc + baseaddr) |
8910 | - baseaddr); | |
2cfa0c8d | 8911 | if (pdi->is_external || cu->language == language_ada) |
c906108c | 8912 | { |
2cfa0c8d JB |
8913 | /* brobecker/2007-12-26: Normally, only "external" DIEs are part |
8914 | of the global scope. But in Ada, we want to be able to access | |
8915 | nested procedures globally. So all Ada subprograms are stored | |
8916 | in the global scope. */ | |
f47fb265 | 8917 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8918 | built_actual_name != NULL, |
f47fb265 | 8919 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8920 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8921 | psymbol_placement::GLOBAL, |
79748972 TT |
8922 | addr, |
8923 | cu->language, objfile); | |
c906108c SS |
8924 | } |
8925 | else | |
8926 | { | |
f47fb265 | 8927 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8928 | built_actual_name != NULL, |
f47fb265 | 8929 | VAR_DOMAIN, LOC_BLOCK, |
79748972 | 8930 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8931 | psymbol_placement::STATIC, |
1762568f | 8932 | addr, cu->language, objfile); |
c906108c | 8933 | } |
0c1b455e TT |
8934 | |
8935 | if (pdi->main_subprogram && actual_name != NULL) | |
8936 | set_objfile_main_name (objfile, actual_name, cu->language); | |
c906108c | 8937 | break; |
72929c62 | 8938 | case DW_TAG_constant: |
75aedd27 TT |
8939 | add_psymbol_to_list (actual_name, strlen (actual_name), |
8940 | built_actual_name != NULL, VAR_DOMAIN, LOC_STATIC, | |
8941 | -1, (pdi->is_external | |
8942 | ? psymbol_placement::GLOBAL | |
8943 | : psymbol_placement::STATIC), | |
8944 | 0, cu->language, objfile); | |
72929c62 | 8945 | break; |
c906108c | 8946 | case DW_TAG_variable: |
95554aad TT |
8947 | if (pdi->d.locdesc) |
8948 | addr = decode_locdesc (pdi->d.locdesc, cu); | |
caac4577 | 8949 | |
95554aad | 8950 | if (pdi->d.locdesc |
caac4577 JG |
8951 | && addr == 0 |
8952 | && !dwarf2_per_objfile->has_section_at_zero) | |
8953 | { | |
8954 | /* A global or static variable may also have been stripped | |
8955 | out by the linker if unused, in which case its address | |
8956 | will be nullified; do not add such variables into partial | |
8957 | symbol table then. */ | |
8958 | } | |
8959 | else if (pdi->is_external) | |
c906108c SS |
8960 | { |
8961 | /* Global Variable. | |
8962 | Don't enter into the minimal symbol tables as there is | |
8963 | a minimal symbol table entry from the ELF symbols already. | |
8964 | Enter into partial symbol table if it has a location | |
8965 | descriptor or a type. | |
8966 | If the location descriptor is missing, new_symbol will create | |
8967 | a LOC_UNRESOLVED symbol, the address of the variable will then | |
8968 | be determined from the minimal symbol table whenever the variable | |
8969 | is referenced. | |
8970 | The address for the partial symbol table entry is not | |
8971 | used by GDB, but it comes in handy for debugging partial symbol | |
8972 | table building. */ | |
8973 | ||
95554aad | 8974 | if (pdi->d.locdesc || pdi->has_type) |
f47fb265 | 8975 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8976 | built_actual_name != NULL, |
f47fb265 | 8977 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8978 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8979 | psymbol_placement::GLOBAL, |
79748972 | 8980 | addr, cu->language, objfile); |
c906108c SS |
8981 | } |
8982 | else | |
8983 | { | |
ff908ebf AW |
8984 | int has_loc = pdi->d.locdesc != NULL; |
8985 | ||
8986 | /* Static Variable. Skip symbols whose value we cannot know (those | |
8987 | without location descriptors or constant values). */ | |
8988 | if (!has_loc && !pdi->has_const_value) | |
decbce07 | 8989 | { |
15d034d0 | 8990 | xfree (built_actual_name); |
decbce07 MS |
8991 | return; |
8992 | } | |
ff908ebf | 8993 | |
f47fb265 | 8994 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 8995 | built_actual_name != NULL, |
f47fb265 | 8996 | VAR_DOMAIN, LOC_STATIC, |
79748972 | 8997 | SECT_OFF_TEXT (objfile), |
75aedd27 | 8998 | psymbol_placement::STATIC, |
79748972 | 8999 | has_loc ? addr : 0, |
f47fb265 | 9000 | cu->language, objfile); |
c906108c SS |
9001 | } |
9002 | break; | |
9003 | case DW_TAG_typedef: | |
9004 | case DW_TAG_base_type: | |
a02abb62 | 9005 | case DW_TAG_subrange_type: |
38d518c9 | 9006 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9007 | built_actual_name != NULL, |
79748972 | 9008 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 9009 | psymbol_placement::STATIC, |
1762568f | 9010 | 0, cu->language, objfile); |
c906108c | 9011 | break; |
74921315 | 9012 | case DW_TAG_imported_declaration: |
72bf9492 DJ |
9013 | case DW_TAG_namespace: |
9014 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
15d034d0 | 9015 | built_actual_name != NULL, |
79748972 | 9016 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 9017 | psymbol_placement::GLOBAL, |
1762568f | 9018 | 0, cu->language, objfile); |
72bf9492 | 9019 | break; |
530e8392 | 9020 | case DW_TAG_module: |
a5fd13a9 BH |
9021 | /* With Fortran 77 there might be a "BLOCK DATA" module |
9022 | available without any name. If so, we skip the module as it | |
9023 | doesn't bring any value. */ | |
9024 | if (actual_name != nullptr) | |
9025 | add_psymbol_to_list (actual_name, strlen (actual_name), | |
9026 | built_actual_name != NULL, | |
9027 | MODULE_DOMAIN, LOC_TYPEDEF, -1, | |
9028 | psymbol_placement::GLOBAL, | |
9029 | 0, cu->language, objfile); | |
530e8392 | 9030 | break; |
c906108c | 9031 | case DW_TAG_class_type: |
680b30c7 | 9032 | case DW_TAG_interface_type: |
c906108c SS |
9033 | case DW_TAG_structure_type: |
9034 | case DW_TAG_union_type: | |
9035 | case DW_TAG_enumeration_type: | |
fa4028e9 JB |
9036 | /* Skip external references. The DWARF standard says in the section |
9037 | about "Structure, Union, and Class Type Entries": "An incomplete | |
9038 | structure, union or class type is represented by a structure, | |
9039 | union or class entry that does not have a byte size attribute | |
9040 | and that has a DW_AT_declaration attribute." */ | |
9041 | if (!pdi->has_byte_size && pdi->is_declaration) | |
decbce07 | 9042 | { |
15d034d0 | 9043 | xfree (built_actual_name); |
decbce07 MS |
9044 | return; |
9045 | } | |
fa4028e9 | 9046 | |
63d06c5c DC |
9047 | /* NOTE: carlton/2003-10-07: See comment in new_symbol about |
9048 | static vs. global. */ | |
38d518c9 | 9049 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9050 | built_actual_name != NULL, |
79748972 | 9051 | STRUCT_DOMAIN, LOC_TYPEDEF, -1, |
9c37b5ae | 9052 | cu->language == language_cplus |
75aedd27 TT |
9053 | ? psymbol_placement::GLOBAL |
9054 | : psymbol_placement::STATIC, | |
1762568f | 9055 | 0, cu->language, objfile); |
c906108c | 9056 | |
c906108c SS |
9057 | break; |
9058 | case DW_TAG_enumerator: | |
38d518c9 | 9059 | add_psymbol_to_list (actual_name, strlen (actual_name), |
15d034d0 | 9060 | built_actual_name != NULL, |
79748972 | 9061 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 9062 | cu->language == language_cplus |
75aedd27 TT |
9063 | ? psymbol_placement::GLOBAL |
9064 | : psymbol_placement::STATIC, | |
1762568f | 9065 | 0, cu->language, objfile); |
c906108c SS |
9066 | break; |
9067 | default: | |
9068 | break; | |
9069 | } | |
5c4e30ca | 9070 | |
15d034d0 | 9071 | xfree (built_actual_name); |
c906108c SS |
9072 | } |
9073 | ||
5c4e30ca DC |
9074 | /* Read a partial die corresponding to a namespace; also, add a symbol |
9075 | corresponding to that namespace to the symbol table. NAMESPACE is | |
9076 | the name of the enclosing namespace. */ | |
91c24f0a | 9077 | |
72bf9492 DJ |
9078 | static void |
9079 | add_partial_namespace (struct partial_die_info *pdi, | |
91c24f0a | 9080 | CORE_ADDR *lowpc, CORE_ADDR *highpc, |
cdc07690 | 9081 | int set_addrmap, struct dwarf2_cu *cu) |
91c24f0a | 9082 | { |
72bf9492 | 9083 | /* Add a symbol for the namespace. */ |
e7c27a73 | 9084 | |
72bf9492 | 9085 | add_partial_symbol (pdi, cu); |
5c4e30ca DC |
9086 | |
9087 | /* Now scan partial symbols in that namespace. */ | |
9088 | ||
91c24f0a | 9089 | if (pdi->has_children) |
cdc07690 | 9090 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
91c24f0a DC |
9091 | } |
9092 | ||
5d7cb8df JK |
9093 | /* Read a partial die corresponding to a Fortran module. */ |
9094 | ||
9095 | static void | |
9096 | add_partial_module (struct partial_die_info *pdi, CORE_ADDR *lowpc, | |
cdc07690 | 9097 | CORE_ADDR *highpc, int set_addrmap, struct dwarf2_cu *cu) |
5d7cb8df | 9098 | { |
530e8392 KB |
9099 | /* Add a symbol for the namespace. */ |
9100 | ||
9101 | add_partial_symbol (pdi, cu); | |
9102 | ||
f55ee35c | 9103 | /* Now scan partial symbols in that module. */ |
5d7cb8df JK |
9104 | |
9105 | if (pdi->has_children) | |
cdc07690 | 9106 | scan_partial_symbols (pdi->die_child, lowpc, highpc, set_addrmap, cu); |
5d7cb8df JK |
9107 | } |
9108 | ||
b1dc1806 XR |
9109 | /* Read a partial die corresponding to a subprogram or an inlined |
9110 | subprogram and create a partial symbol for that subprogram. | |
9111 | When the CU language allows it, this routine also defines a partial | |
9112 | symbol for each nested subprogram that this subprogram contains. | |
9113 | If SET_ADDRMAP is true, record the covered ranges in the addrmap. | |
9114 | Set *LOWPC and *HIGHPC to the lowest and highest PC values found in PDI. | |
6e70227d | 9115 | |
cdc07690 YQ |
9116 | PDI may also be a lexical block, in which case we simply search |
9117 | recursively for subprograms defined inside that lexical block. | |
bc30ff58 JB |
9118 | Again, this is only performed when the CU language allows this |
9119 | type of definitions. */ | |
9120 | ||
9121 | static void | |
9122 | add_partial_subprogram (struct partial_die_info *pdi, | |
9123 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
cdc07690 | 9124 | int set_addrmap, struct dwarf2_cu *cu) |
bc30ff58 | 9125 | { |
b1dc1806 | 9126 | if (pdi->tag == DW_TAG_subprogram || pdi->tag == DW_TAG_inlined_subroutine) |
bc30ff58 JB |
9127 | { |
9128 | if (pdi->has_pc_info) | |
9129 | { | |
9130 | if (pdi->lowpc < *lowpc) | |
9131 | *lowpc = pdi->lowpc; | |
9132 | if (pdi->highpc > *highpc) | |
9133 | *highpc = pdi->highpc; | |
cdc07690 | 9134 | if (set_addrmap) |
5734ee8b | 9135 | { |
518817b3 | 9136 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a MR |
9137 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9138 | CORE_ADDR baseaddr; | |
b926417a TT |
9139 | CORE_ADDR this_highpc; |
9140 | CORE_ADDR this_lowpc; | |
5734ee8b DJ |
9141 | |
9142 | baseaddr = ANOFFSET (objfile->section_offsets, | |
9143 | SECT_OFF_TEXT (objfile)); | |
b926417a TT |
9144 | this_lowpc |
9145 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9146 | pdi->lowpc + baseaddr) | |
9147 | - baseaddr); | |
9148 | this_highpc | |
9149 | = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
9150 | pdi->highpc + baseaddr) | |
9151 | - baseaddr); | |
d320c2b5 | 9152 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
b926417a | 9153 | this_lowpc, this_highpc - 1, |
9291a0cd | 9154 | cu->per_cu->v.psymtab); |
5734ee8b | 9155 | } |
481860b3 GB |
9156 | } |
9157 | ||
9158 | if (pdi->has_pc_info || (!pdi->is_external && pdi->may_be_inlined)) | |
9159 | { | |
bc30ff58 | 9160 | if (!pdi->is_declaration) |
e8d05480 JB |
9161 | /* Ignore subprogram DIEs that do not have a name, they are |
9162 | illegal. Do not emit a complaint at this point, we will | |
9163 | do so when we convert this psymtab into a symtab. */ | |
9164 | if (pdi->name) | |
9165 | add_partial_symbol (pdi, cu); | |
bc30ff58 JB |
9166 | } |
9167 | } | |
6e70227d | 9168 | |
bc30ff58 JB |
9169 | if (! pdi->has_children) |
9170 | return; | |
9171 | ||
9172 | if (cu->language == language_ada) | |
9173 | { | |
9174 | pdi = pdi->die_child; | |
9175 | while (pdi != NULL) | |
9176 | { | |
52356b79 | 9177 | pdi->fixup (cu); |
bc30ff58 | 9178 | if (pdi->tag == DW_TAG_subprogram |
b1dc1806 | 9179 | || pdi->tag == DW_TAG_inlined_subroutine |
bc30ff58 | 9180 | || pdi->tag == DW_TAG_lexical_block) |
cdc07690 | 9181 | add_partial_subprogram (pdi, lowpc, highpc, set_addrmap, cu); |
bc30ff58 JB |
9182 | pdi = pdi->die_sibling; |
9183 | } | |
9184 | } | |
9185 | } | |
9186 | ||
91c24f0a DC |
9187 | /* Read a partial die corresponding to an enumeration type. */ |
9188 | ||
72bf9492 DJ |
9189 | static void |
9190 | add_partial_enumeration (struct partial_die_info *enum_pdi, | |
9191 | struct dwarf2_cu *cu) | |
91c24f0a | 9192 | { |
72bf9492 | 9193 | struct partial_die_info *pdi; |
91c24f0a DC |
9194 | |
9195 | if (enum_pdi->name != NULL) | |
72bf9492 DJ |
9196 | add_partial_symbol (enum_pdi, cu); |
9197 | ||
9198 | pdi = enum_pdi->die_child; | |
9199 | while (pdi) | |
91c24f0a | 9200 | { |
72bf9492 | 9201 | if (pdi->tag != DW_TAG_enumerator || pdi->name == NULL) |
b98664d3 | 9202 | complaint (_("malformed enumerator DIE ignored")); |
91c24f0a | 9203 | else |
72bf9492 DJ |
9204 | add_partial_symbol (pdi, cu); |
9205 | pdi = pdi->die_sibling; | |
91c24f0a | 9206 | } |
91c24f0a DC |
9207 | } |
9208 | ||
6caca83c CC |
9209 | /* Return the initial uleb128 in the die at INFO_PTR. */ |
9210 | ||
9211 | static unsigned int | |
d521ce57 | 9212 | peek_abbrev_code (bfd *abfd, const gdb_byte *info_ptr) |
6caca83c CC |
9213 | { |
9214 | unsigned int bytes_read; | |
9215 | ||
9216 | return read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9217 | } | |
9218 | ||
685af9cd TT |
9219 | /* Read the initial uleb128 in the die at INFO_PTR in compilation unit |
9220 | READER::CU. Use READER::ABBREV_TABLE to lookup any abbreviation. | |
9221 | ||
4bb7a0a7 DJ |
9222 | Return the corresponding abbrev, or NULL if the number is zero (indicating |
9223 | an empty DIE). In either case *BYTES_READ will be set to the length of | |
9224 | the initial number. */ | |
9225 | ||
9226 | static struct abbrev_info * | |
685af9cd TT |
9227 | peek_die_abbrev (const die_reader_specs &reader, |
9228 | const gdb_byte *info_ptr, unsigned int *bytes_read) | |
4bb7a0a7 | 9229 | { |
685af9cd | 9230 | dwarf2_cu *cu = reader.cu; |
518817b3 | 9231 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
685af9cd TT |
9232 | unsigned int abbrev_number |
9233 | = read_unsigned_leb128 (abfd, info_ptr, bytes_read); | |
4bb7a0a7 DJ |
9234 | |
9235 | if (abbrev_number == 0) | |
9236 | return NULL; | |
9237 | ||
685af9cd | 9238 | abbrev_info *abbrev = reader.abbrev_table->lookup_abbrev (abbrev_number); |
4bb7a0a7 DJ |
9239 | if (!abbrev) |
9240 | { | |
422b9917 | 9241 | error (_("Dwarf Error: Could not find abbrev number %d in %s" |
9d8780f0 | 9242 | " at offset %s [in module %s]"), |
422b9917 | 9243 | abbrev_number, cu->per_cu->is_debug_types ? "TU" : "CU", |
9d8780f0 | 9244 | sect_offset_str (cu->header.sect_off), bfd_get_filename (abfd)); |
4bb7a0a7 DJ |
9245 | } |
9246 | ||
9247 | return abbrev; | |
9248 | } | |
9249 | ||
93311388 DE |
9250 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9251 | Returns a pointer to the end of a series of DIEs, terminated by an empty | |
4bb7a0a7 DJ |
9252 | DIE. Any children of the skipped DIEs will also be skipped. */ |
9253 | ||
d521ce57 TT |
9254 | static const gdb_byte * |
9255 | skip_children (const struct die_reader_specs *reader, const gdb_byte *info_ptr) | |
4bb7a0a7 | 9256 | { |
4bb7a0a7 DJ |
9257 | while (1) |
9258 | { | |
685af9cd TT |
9259 | unsigned int bytes_read; |
9260 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); | |
9261 | ||
4bb7a0a7 DJ |
9262 | if (abbrev == NULL) |
9263 | return info_ptr + bytes_read; | |
9264 | else | |
dee91e82 | 9265 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
4bb7a0a7 DJ |
9266 | } |
9267 | } | |
9268 | ||
93311388 DE |
9269 | /* Scan the debug information for CU starting at INFO_PTR in buffer BUFFER. |
9270 | INFO_PTR should point just after the initial uleb128 of a DIE, and the | |
4bb7a0a7 DJ |
9271 | abbrev corresponding to that skipped uleb128 should be passed in |
9272 | ABBREV. Returns a pointer to this DIE's sibling, skipping any | |
9273 | children. */ | |
9274 | ||
d521ce57 TT |
9275 | static const gdb_byte * |
9276 | skip_one_die (const struct die_reader_specs *reader, const gdb_byte *info_ptr, | |
dee91e82 | 9277 | struct abbrev_info *abbrev) |
4bb7a0a7 DJ |
9278 | { |
9279 | unsigned int bytes_read; | |
9280 | struct attribute attr; | |
dee91e82 DE |
9281 | bfd *abfd = reader->abfd; |
9282 | struct dwarf2_cu *cu = reader->cu; | |
d521ce57 | 9283 | const gdb_byte *buffer = reader->buffer; |
f664829e | 9284 | const gdb_byte *buffer_end = reader->buffer_end; |
4bb7a0a7 DJ |
9285 | unsigned int form, i; |
9286 | ||
9287 | for (i = 0; i < abbrev->num_attrs; i++) | |
9288 | { | |
9289 | /* The only abbrev we care about is DW_AT_sibling. */ | |
9290 | if (abbrev->attrs[i].name == DW_AT_sibling) | |
9291 | { | |
dee91e82 | 9292 | read_attribute (reader, &attr, &abbrev->attrs[i], info_ptr); |
4bb7a0a7 | 9293 | if (attr.form == DW_FORM_ref_addr) |
b98664d3 | 9294 | complaint (_("ignoring absolute DW_AT_sibling")); |
4bb7a0a7 | 9295 | else |
b9502d3f | 9296 | { |
9c541725 PA |
9297 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
9298 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
9299 | |
9300 | if (sibling_ptr < info_ptr) | |
b98664d3 | 9301 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
9302 | else if (sibling_ptr > reader->buffer_end) |
9303 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f WN |
9304 | else |
9305 | return sibling_ptr; | |
9306 | } | |
4bb7a0a7 DJ |
9307 | } |
9308 | ||
9309 | /* If it isn't DW_AT_sibling, skip this attribute. */ | |
9310 | form = abbrev->attrs[i].form; | |
9311 | skip_attribute: | |
9312 | switch (form) | |
9313 | { | |
4bb7a0a7 | 9314 | case DW_FORM_ref_addr: |
ae411497 TT |
9315 | /* In DWARF 2, DW_FORM_ref_addr is address sized; in DWARF 3 |
9316 | and later it is offset sized. */ | |
9317 | if (cu->header.version == 2) | |
9318 | info_ptr += cu->header.addr_size; | |
9319 | else | |
9320 | info_ptr += cu->header.offset_size; | |
9321 | break; | |
36586728 TT |
9322 | case DW_FORM_GNU_ref_alt: |
9323 | info_ptr += cu->header.offset_size; | |
9324 | break; | |
ae411497 | 9325 | case DW_FORM_addr: |
4bb7a0a7 DJ |
9326 | info_ptr += cu->header.addr_size; |
9327 | break; | |
9328 | case DW_FORM_data1: | |
9329 | case DW_FORM_ref1: | |
9330 | case DW_FORM_flag: | |
9331 | info_ptr += 1; | |
9332 | break; | |
2dc7f7b3 | 9333 | case DW_FORM_flag_present: |
43988095 | 9334 | case DW_FORM_implicit_const: |
2dc7f7b3 | 9335 | break; |
4bb7a0a7 DJ |
9336 | case DW_FORM_data2: |
9337 | case DW_FORM_ref2: | |
9338 | info_ptr += 2; | |
9339 | break; | |
9340 | case DW_FORM_data4: | |
9341 | case DW_FORM_ref4: | |
9342 | info_ptr += 4; | |
9343 | break; | |
9344 | case DW_FORM_data8: | |
9345 | case DW_FORM_ref8: | |
55f1336d | 9346 | case DW_FORM_ref_sig8: |
4bb7a0a7 DJ |
9347 | info_ptr += 8; |
9348 | break; | |
0224619f JK |
9349 | case DW_FORM_data16: |
9350 | info_ptr += 16; | |
9351 | break; | |
4bb7a0a7 | 9352 | case DW_FORM_string: |
9b1c24c8 | 9353 | read_direct_string (abfd, info_ptr, &bytes_read); |
4bb7a0a7 DJ |
9354 | info_ptr += bytes_read; |
9355 | break; | |
2dc7f7b3 | 9356 | case DW_FORM_sec_offset: |
4bb7a0a7 | 9357 | case DW_FORM_strp: |
36586728 | 9358 | case DW_FORM_GNU_strp_alt: |
4bb7a0a7 DJ |
9359 | info_ptr += cu->header.offset_size; |
9360 | break; | |
2dc7f7b3 | 9361 | case DW_FORM_exprloc: |
4bb7a0a7 DJ |
9362 | case DW_FORM_block: |
9363 | info_ptr += read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9364 | info_ptr += bytes_read; | |
9365 | break; | |
9366 | case DW_FORM_block1: | |
9367 | info_ptr += 1 + read_1_byte (abfd, info_ptr); | |
9368 | break; | |
9369 | case DW_FORM_block2: | |
9370 | info_ptr += 2 + read_2_bytes (abfd, info_ptr); | |
9371 | break; | |
9372 | case DW_FORM_block4: | |
9373 | info_ptr += 4 + read_4_bytes (abfd, info_ptr); | |
9374 | break; | |
336d760d | 9375 | case DW_FORM_addrx: |
cf532bd1 | 9376 | case DW_FORM_strx: |
4bb7a0a7 DJ |
9377 | case DW_FORM_sdata: |
9378 | case DW_FORM_udata: | |
9379 | case DW_FORM_ref_udata: | |
3019eac3 DE |
9380 | case DW_FORM_GNU_addr_index: |
9381 | case DW_FORM_GNU_str_index: | |
d521ce57 | 9382 | info_ptr = safe_skip_leb128 (info_ptr, buffer_end); |
4bb7a0a7 DJ |
9383 | break; |
9384 | case DW_FORM_indirect: | |
9385 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
9386 | info_ptr += bytes_read; | |
9387 | /* We need to continue parsing from here, so just go back to | |
9388 | the top. */ | |
9389 | goto skip_attribute; | |
9390 | ||
9391 | default: | |
3e43a32a MS |
9392 | error (_("Dwarf Error: Cannot handle %s " |
9393 | "in DWARF reader [in module %s]"), | |
4bb7a0a7 DJ |
9394 | dwarf_form_name (form), |
9395 | bfd_get_filename (abfd)); | |
9396 | } | |
9397 | } | |
9398 | ||
9399 | if (abbrev->has_children) | |
dee91e82 | 9400 | return skip_children (reader, info_ptr); |
4bb7a0a7 DJ |
9401 | else |
9402 | return info_ptr; | |
9403 | } | |
9404 | ||
93311388 | 9405 | /* Locate ORIG_PDI's sibling. |
dee91e82 | 9406 | INFO_PTR should point to the start of the next DIE after ORIG_PDI. */ |
91c24f0a | 9407 | |
d521ce57 | 9408 | static const gdb_byte * |
dee91e82 DE |
9409 | locate_pdi_sibling (const struct die_reader_specs *reader, |
9410 | struct partial_die_info *orig_pdi, | |
d521ce57 | 9411 | const gdb_byte *info_ptr) |
91c24f0a DC |
9412 | { |
9413 | /* Do we know the sibling already? */ | |
72bf9492 | 9414 | |
91c24f0a DC |
9415 | if (orig_pdi->sibling) |
9416 | return orig_pdi->sibling; | |
9417 | ||
9418 | /* Are there any children to deal with? */ | |
9419 | ||
9420 | if (!orig_pdi->has_children) | |
9421 | return info_ptr; | |
9422 | ||
4bb7a0a7 | 9423 | /* Skip the children the long way. */ |
91c24f0a | 9424 | |
dee91e82 | 9425 | return skip_children (reader, info_ptr); |
91c24f0a DC |
9426 | } |
9427 | ||
257e7a09 | 9428 | /* Expand this partial symbol table into a full symbol table. SELF is |
442e4d9c | 9429 | not NULL. */ |
c906108c SS |
9430 | |
9431 | static void | |
257e7a09 YQ |
9432 | dwarf2_read_symtab (struct partial_symtab *self, |
9433 | struct objfile *objfile) | |
c906108c | 9434 | { |
ed2dc618 SM |
9435 | struct dwarf2_per_objfile *dwarf2_per_objfile |
9436 | = get_dwarf2_per_objfile (objfile); | |
9437 | ||
257e7a09 | 9438 | if (self->readin) |
c906108c | 9439 | { |
442e4d9c | 9440 | warning (_("bug: psymtab for %s is already read in."), |
257e7a09 | 9441 | self->filename); |
442e4d9c YQ |
9442 | } |
9443 | else | |
9444 | { | |
9445 | if (info_verbose) | |
c906108c | 9446 | { |
442e4d9c | 9447 | printf_filtered (_("Reading in symbols for %s..."), |
257e7a09 | 9448 | self->filename); |
442e4d9c | 9449 | gdb_flush (gdb_stdout); |
c906108c | 9450 | } |
c906108c | 9451 | |
442e4d9c YQ |
9452 | /* If this psymtab is constructed from a debug-only objfile, the |
9453 | has_section_at_zero flag will not necessarily be correct. We | |
9454 | can get the correct value for this flag by looking at the data | |
9455 | associated with the (presumably stripped) associated objfile. */ | |
9456 | if (objfile->separate_debug_objfile_backlink) | |
9457 | { | |
9458 | struct dwarf2_per_objfile *dpo_backlink | |
ed2dc618 | 9459 | = get_dwarf2_per_objfile (objfile->separate_debug_objfile_backlink); |
9a619af0 | 9460 | |
442e4d9c YQ |
9461 | dwarf2_per_objfile->has_section_at_zero |
9462 | = dpo_backlink->has_section_at_zero; | |
9463 | } | |
b2ab525c | 9464 | |
442e4d9c | 9465 | dwarf2_per_objfile->reading_partial_symbols = 0; |
98bfdba5 | 9466 | |
257e7a09 | 9467 | psymtab_to_symtab_1 (self); |
c906108c | 9468 | |
442e4d9c YQ |
9469 | /* Finish up the debug error message. */ |
9470 | if (info_verbose) | |
9471 | printf_filtered (_("done.\n")); | |
c906108c | 9472 | } |
95554aad | 9473 | |
ed2dc618 | 9474 | process_cu_includes (dwarf2_per_objfile); |
c906108c | 9475 | } |
9cdd5dbd DE |
9476 | \f |
9477 | /* Reading in full CUs. */ | |
c906108c | 9478 | |
10b3939b DJ |
9479 | /* Add PER_CU to the queue. */ |
9480 | ||
9481 | static void | |
95554aad TT |
9482 | queue_comp_unit (struct dwarf2_per_cu_data *per_cu, |
9483 | enum language pretend_language) | |
10b3939b DJ |
9484 | { |
9485 | struct dwarf2_queue_item *item; | |
9486 | ||
9487 | per_cu->queued = 1; | |
8d749320 | 9488 | item = XNEW (struct dwarf2_queue_item); |
10b3939b | 9489 | item->per_cu = per_cu; |
95554aad | 9490 | item->pretend_language = pretend_language; |
10b3939b DJ |
9491 | item->next = NULL; |
9492 | ||
9493 | if (dwarf2_queue == NULL) | |
9494 | dwarf2_queue = item; | |
9495 | else | |
9496 | dwarf2_queue_tail->next = item; | |
9497 | ||
9498 | dwarf2_queue_tail = item; | |
9499 | } | |
9500 | ||
89e63ee4 DE |
9501 | /* If PER_CU is not yet queued, add it to the queue. |
9502 | If DEPENDENT_CU is non-NULL, it has a reference to PER_CU so add a | |
9503 | dependency. | |
0907af0c | 9504 | The result is non-zero if PER_CU was queued, otherwise the result is zero |
69d751e3 DE |
9505 | meaning either PER_CU is already queued or it is already loaded. |
9506 | ||
9507 | N.B. There is an invariant here that if a CU is queued then it is loaded. | |
9508 | The caller is required to load PER_CU if we return non-zero. */ | |
0907af0c DE |
9509 | |
9510 | static int | |
89e63ee4 | 9511 | maybe_queue_comp_unit (struct dwarf2_cu *dependent_cu, |
0907af0c DE |
9512 | struct dwarf2_per_cu_data *per_cu, |
9513 | enum language pretend_language) | |
9514 | { | |
9515 | /* We may arrive here during partial symbol reading, if we need full | |
9516 | DIEs to process an unusual case (e.g. template arguments). Do | |
9517 | not queue PER_CU, just tell our caller to load its DIEs. */ | |
ed2dc618 | 9518 | if (per_cu->dwarf2_per_objfile->reading_partial_symbols) |
0907af0c DE |
9519 | { |
9520 | if (per_cu->cu == NULL || per_cu->cu->dies == NULL) | |
9521 | return 1; | |
9522 | return 0; | |
9523 | } | |
9524 | ||
9525 | /* Mark the dependence relation so that we don't flush PER_CU | |
9526 | too early. */ | |
89e63ee4 DE |
9527 | if (dependent_cu != NULL) |
9528 | dwarf2_add_dependence (dependent_cu, per_cu); | |
0907af0c DE |
9529 | |
9530 | /* If it's already on the queue, we have nothing to do. */ | |
9531 | if (per_cu->queued) | |
9532 | return 0; | |
9533 | ||
9534 | /* If the compilation unit is already loaded, just mark it as | |
9535 | used. */ | |
9536 | if (per_cu->cu != NULL) | |
9537 | { | |
9538 | per_cu->cu->last_used = 0; | |
9539 | return 0; | |
9540 | } | |
9541 | ||
9542 | /* Add it to the queue. */ | |
9543 | queue_comp_unit (per_cu, pretend_language); | |
9544 | ||
9545 | return 1; | |
9546 | } | |
9547 | ||
10b3939b DJ |
9548 | /* Process the queue. */ |
9549 | ||
9550 | static void | |
ed2dc618 | 9551 | process_queue (struct dwarf2_per_objfile *dwarf2_per_objfile) |
10b3939b DJ |
9552 | { |
9553 | struct dwarf2_queue_item *item, *next_item; | |
9554 | ||
b4f54984 | 9555 | if (dwarf_read_debug) |
45cfd468 DE |
9556 | { |
9557 | fprintf_unfiltered (gdb_stdlog, | |
9558 | "Expanding one or more symtabs of objfile %s ...\n", | |
4262abfb | 9559 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 DE |
9560 | } |
9561 | ||
03dd20cc DJ |
9562 | /* The queue starts out with one item, but following a DIE reference |
9563 | may load a new CU, adding it to the end of the queue. */ | |
10b3939b DJ |
9564 | for (item = dwarf2_queue; item != NULL; dwarf2_queue = item = next_item) |
9565 | { | |
cc12ce38 DE |
9566 | if ((dwarf2_per_objfile->using_index |
9567 | ? !item->per_cu->v.quick->compunit_symtab | |
9568 | : (item->per_cu->v.psymtab && !item->per_cu->v.psymtab->readin)) | |
9569 | /* Skip dummy CUs. */ | |
9570 | && item->per_cu->cu != NULL) | |
f4dc4d17 DE |
9571 | { |
9572 | struct dwarf2_per_cu_data *per_cu = item->per_cu; | |
73be47f5 | 9573 | unsigned int debug_print_threshold; |
247f5c4f | 9574 | char buf[100]; |
f4dc4d17 | 9575 | |
247f5c4f | 9576 | if (per_cu->is_debug_types) |
f4dc4d17 | 9577 | { |
247f5c4f DE |
9578 | struct signatured_type *sig_type = |
9579 | (struct signatured_type *) per_cu; | |
9580 | ||
9d8780f0 | 9581 | sprintf (buf, "TU %s at offset %s", |
73be47f5 | 9582 | hex_string (sig_type->signature), |
9d8780f0 | 9583 | sect_offset_str (per_cu->sect_off)); |
73be47f5 DE |
9584 | /* There can be 100s of TUs. |
9585 | Only print them in verbose mode. */ | |
9586 | debug_print_threshold = 2; | |
f4dc4d17 | 9587 | } |
247f5c4f | 9588 | else |
73be47f5 | 9589 | { |
9d8780f0 SM |
9590 | sprintf (buf, "CU at offset %s", |
9591 | sect_offset_str (per_cu->sect_off)); | |
73be47f5 DE |
9592 | debug_print_threshold = 1; |
9593 | } | |
247f5c4f | 9594 | |
b4f54984 | 9595 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9596 | fprintf_unfiltered (gdb_stdlog, "Expanding symtab of %s\n", buf); |
f4dc4d17 DE |
9597 | |
9598 | if (per_cu->is_debug_types) | |
9599 | process_full_type_unit (per_cu, item->pretend_language); | |
9600 | else | |
9601 | process_full_comp_unit (per_cu, item->pretend_language); | |
9602 | ||
b4f54984 | 9603 | if (dwarf_read_debug >= debug_print_threshold) |
247f5c4f | 9604 | fprintf_unfiltered (gdb_stdlog, "Done expanding %s\n", buf); |
f4dc4d17 | 9605 | } |
10b3939b DJ |
9606 | |
9607 | item->per_cu->queued = 0; | |
9608 | next_item = item->next; | |
9609 | xfree (item); | |
9610 | } | |
9611 | ||
9612 | dwarf2_queue_tail = NULL; | |
45cfd468 | 9613 | |
b4f54984 | 9614 | if (dwarf_read_debug) |
45cfd468 DE |
9615 | { |
9616 | fprintf_unfiltered (gdb_stdlog, "Done expanding symtabs of %s.\n", | |
4262abfb | 9617 | objfile_name (dwarf2_per_objfile->objfile)); |
45cfd468 | 9618 | } |
10b3939b DJ |
9619 | } |
9620 | ||
10b3939b DJ |
9621 | /* Read in full symbols for PST, and anything it depends on. */ |
9622 | ||
c906108c | 9623 | static void |
fba45db2 | 9624 | psymtab_to_symtab_1 (struct partial_symtab *pst) |
c906108c | 9625 | { |
10b3939b | 9626 | struct dwarf2_per_cu_data *per_cu; |
aaa75496 JB |
9627 | int i; |
9628 | ||
95554aad TT |
9629 | if (pst->readin) |
9630 | return; | |
9631 | ||
aaa75496 | 9632 | for (i = 0; i < pst->number_of_dependencies; i++) |
95554aad TT |
9633 | if (!pst->dependencies[i]->readin |
9634 | && pst->dependencies[i]->user == NULL) | |
aaa75496 JB |
9635 | { |
9636 | /* Inform about additional files that need to be read in. */ | |
9637 | if (info_verbose) | |
9638 | { | |
a3f17187 | 9639 | /* FIXME: i18n: Need to make this a single string. */ |
aaa75496 JB |
9640 | fputs_filtered (" ", gdb_stdout); |
9641 | wrap_here (""); | |
9642 | fputs_filtered ("and ", gdb_stdout); | |
9643 | wrap_here (""); | |
9644 | printf_filtered ("%s...", pst->dependencies[i]->filename); | |
0963b4bd | 9645 | wrap_here (""); /* Flush output. */ |
aaa75496 JB |
9646 | gdb_flush (gdb_stdout); |
9647 | } | |
9648 | psymtab_to_symtab_1 (pst->dependencies[i]); | |
9649 | } | |
9650 | ||
9a3c8263 | 9651 | per_cu = (struct dwarf2_per_cu_data *) pst->read_symtab_private; |
10b3939b DJ |
9652 | |
9653 | if (per_cu == NULL) | |
aaa75496 JB |
9654 | { |
9655 | /* It's an include file, no symbols to read for it. | |
9656 | Everything is in the parent symtab. */ | |
9657 | pst->readin = 1; | |
9658 | return; | |
9659 | } | |
c906108c | 9660 | |
58f0c718 | 9661 | dw2_do_instantiate_symtab (per_cu, false); |
10b3939b DJ |
9662 | } |
9663 | ||
dee91e82 DE |
9664 | /* Trivial hash function for die_info: the hash value of a DIE |
9665 | is its offset in .debug_info for this objfile. */ | |
10b3939b | 9666 | |
dee91e82 DE |
9667 | static hashval_t |
9668 | die_hash (const void *item) | |
10b3939b | 9669 | { |
9a3c8263 | 9670 | const struct die_info *die = (const struct die_info *) item; |
6502dd73 | 9671 | |
9c541725 | 9672 | return to_underlying (die->sect_off); |
dee91e82 | 9673 | } |
63d06c5c | 9674 | |
dee91e82 DE |
9675 | /* Trivial comparison function for die_info structures: two DIEs |
9676 | are equal if they have the same offset. */ | |
98bfdba5 | 9677 | |
dee91e82 DE |
9678 | static int |
9679 | die_eq (const void *item_lhs, const void *item_rhs) | |
9680 | { | |
9a3c8263 SM |
9681 | const struct die_info *die_lhs = (const struct die_info *) item_lhs; |
9682 | const struct die_info *die_rhs = (const struct die_info *) item_rhs; | |
c906108c | 9683 | |
9c541725 | 9684 | return die_lhs->sect_off == die_rhs->sect_off; |
dee91e82 | 9685 | } |
c906108c | 9686 | |
dee91e82 DE |
9687 | /* die_reader_func for load_full_comp_unit. |
9688 | This is identical to read_signatured_type_reader, | |
9689 | but is kept separate for now. */ | |
c906108c | 9690 | |
dee91e82 DE |
9691 | static void |
9692 | load_full_comp_unit_reader (const struct die_reader_specs *reader, | |
d521ce57 | 9693 | const gdb_byte *info_ptr, |
dee91e82 DE |
9694 | struct die_info *comp_unit_die, |
9695 | int has_children, | |
9696 | void *data) | |
9697 | { | |
9698 | struct dwarf2_cu *cu = reader->cu; | |
9a3c8263 | 9699 | enum language *language_ptr = (enum language *) data; |
6caca83c | 9700 | |
dee91e82 DE |
9701 | gdb_assert (cu->die_hash == NULL); |
9702 | cu->die_hash = | |
9703 | htab_create_alloc_ex (cu->header.length / 12, | |
9704 | die_hash, | |
9705 | die_eq, | |
9706 | NULL, | |
9707 | &cu->comp_unit_obstack, | |
9708 | hashtab_obstack_allocate, | |
9709 | dummy_obstack_deallocate); | |
e142c38c | 9710 | |
dee91e82 DE |
9711 | if (has_children) |
9712 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
9713 | &info_ptr, comp_unit_die); | |
9714 | cu->dies = comp_unit_die; | |
9715 | /* comp_unit_die is not stored in die_hash, no need. */ | |
10b3939b DJ |
9716 | |
9717 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 9718 | all CUs needed for references have been loaded yet, and symbol |
10b3939b | 9719 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
9720 | or we won't be able to build types correctly. |
9721 | Similarly, if we do not read the producer, we can not apply | |
9722 | producer-specific interpretation. */ | |
95554aad | 9723 | prepare_one_comp_unit (cu, cu->dies, *language_ptr); |
dee91e82 | 9724 | } |
10b3939b | 9725 | |
dee91e82 | 9726 | /* Load the DIEs associated with PER_CU into memory. */ |
a6c727b2 | 9727 | |
dee91e82 | 9728 | static void |
95554aad | 9729 | load_full_comp_unit (struct dwarf2_per_cu_data *this_cu, |
58f0c718 | 9730 | bool skip_partial, |
95554aad | 9731 | enum language pretend_language) |
dee91e82 | 9732 | { |
3019eac3 | 9733 | gdb_assert (! this_cu->is_debug_types); |
c5b7e1cb | 9734 | |
58f0c718 | 9735 | init_cutu_and_read_dies (this_cu, NULL, 1, 1, skip_partial, |
f4dc4d17 | 9736 | load_full_comp_unit_reader, &pretend_language); |
10b3939b DJ |
9737 | } |
9738 | ||
3da10d80 KS |
9739 | /* Add a DIE to the delayed physname list. */ |
9740 | ||
9741 | static void | |
9742 | add_to_method_list (struct type *type, int fnfield_index, int index, | |
9743 | const char *name, struct die_info *die, | |
9744 | struct dwarf2_cu *cu) | |
9745 | { | |
9746 | struct delayed_method_info mi; | |
9747 | mi.type = type; | |
9748 | mi.fnfield_index = fnfield_index; | |
9749 | mi.index = index; | |
9750 | mi.name = name; | |
9751 | mi.die = die; | |
c89b44cd | 9752 | cu->method_list.push_back (mi); |
3da10d80 KS |
9753 | } |
9754 | ||
3693fdb3 PA |
9755 | /* Check whether [PHYSNAME, PHYSNAME+LEN) ends with a modifier like |
9756 | "const" / "volatile". If so, decrements LEN by the length of the | |
9757 | modifier and return true. Otherwise return false. */ | |
9758 | ||
9759 | template<size_t N> | |
9760 | static bool | |
9761 | check_modifier (const char *physname, size_t &len, const char (&mod)[N]) | |
9762 | { | |
9763 | size_t mod_len = sizeof (mod) - 1; | |
9764 | if (len > mod_len && startswith (physname + (len - mod_len), mod)) | |
9765 | { | |
9766 | len -= mod_len; | |
9767 | return true; | |
9768 | } | |
9769 | return false; | |
9770 | } | |
9771 | ||
3da10d80 KS |
9772 | /* Compute the physnames of any methods on the CU's method list. |
9773 | ||
9774 | The computation of method physnames is delayed in order to avoid the | |
9775 | (bad) condition that one of the method's formal parameters is of an as yet | |
9776 | incomplete type. */ | |
9777 | ||
9778 | static void | |
9779 | compute_delayed_physnames (struct dwarf2_cu *cu) | |
9780 | { | |
3693fdb3 | 9781 | /* Only C++ delays computing physnames. */ |
c89b44cd | 9782 | if (cu->method_list.empty ()) |
3693fdb3 PA |
9783 | return; |
9784 | gdb_assert (cu->language == language_cplus); | |
9785 | ||
52941706 | 9786 | for (const delayed_method_info &mi : cu->method_list) |
3da10d80 | 9787 | { |
1d06ead6 | 9788 | const char *physname; |
3da10d80 | 9789 | struct fn_fieldlist *fn_flp |
c89b44cd TT |
9790 | = &TYPE_FN_FIELDLIST (mi.type, mi.fnfield_index); |
9791 | physname = dwarf2_physname (mi.name, mi.die, cu); | |
9792 | TYPE_FN_FIELD_PHYSNAME (fn_flp->fn_fields, mi.index) | |
005e54bb | 9793 | = physname ? physname : ""; |
3693fdb3 PA |
9794 | |
9795 | /* Since there's no tag to indicate whether a method is a | |
9796 | const/volatile overload, extract that information out of the | |
9797 | demangled name. */ | |
9798 | if (physname != NULL) | |
9799 | { | |
9800 | size_t len = strlen (physname); | |
9801 | ||
9802 | while (1) | |
9803 | { | |
9804 | if (physname[len] == ')') /* shortcut */ | |
9805 | break; | |
9806 | else if (check_modifier (physname, len, " const")) | |
c89b44cd | 9807 | TYPE_FN_FIELD_CONST (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 | 9808 | else if (check_modifier (physname, len, " volatile")) |
c89b44cd | 9809 | TYPE_FN_FIELD_VOLATILE (fn_flp->fn_fields, mi.index) = 1; |
3693fdb3 PA |
9810 | else |
9811 | break; | |
9812 | } | |
9813 | } | |
3da10d80 | 9814 | } |
c89b44cd TT |
9815 | |
9816 | /* The list is no longer needed. */ | |
9817 | cu->method_list.clear (); | |
3da10d80 KS |
9818 | } |
9819 | ||
a766d390 DE |
9820 | /* Go objects should be embedded in a DW_TAG_module DIE, |
9821 | and it's not clear if/how imported objects will appear. | |
9822 | To keep Go support simple until that's worked out, | |
9823 | go back through what we've read and create something usable. | |
9824 | We could do this while processing each DIE, and feels kinda cleaner, | |
9825 | but that way is more invasive. | |
9826 | This is to, for example, allow the user to type "p var" or "b main" | |
9827 | without having to specify the package name, and allow lookups | |
9828 | of module.object to work in contexts that use the expression | |
9829 | parser. */ | |
9830 | ||
9831 | static void | |
9832 | fixup_go_packaging (struct dwarf2_cu *cu) | |
9833 | { | |
9834 | char *package_name = NULL; | |
9835 | struct pending *list; | |
9836 | int i; | |
9837 | ||
c24bdb02 | 9838 | for (list = *cu->get_builder ()->get_global_symbols (); |
804d2729 TT |
9839 | list != NULL; |
9840 | list = list->next) | |
a766d390 DE |
9841 | { |
9842 | for (i = 0; i < list->nsyms; ++i) | |
9843 | { | |
9844 | struct symbol *sym = list->symbol[i]; | |
9845 | ||
9846 | if (SYMBOL_LANGUAGE (sym) == language_go | |
9847 | && SYMBOL_CLASS (sym) == LOC_BLOCK) | |
9848 | { | |
9849 | char *this_package_name = go_symbol_package_name (sym); | |
9850 | ||
9851 | if (this_package_name == NULL) | |
9852 | continue; | |
9853 | if (package_name == NULL) | |
9854 | package_name = this_package_name; | |
9855 | else | |
9856 | { | |
518817b3 SM |
9857 | struct objfile *objfile |
9858 | = cu->per_cu->dwarf2_per_objfile->objfile; | |
a766d390 | 9859 | if (strcmp (package_name, this_package_name) != 0) |
b98664d3 | 9860 | complaint (_("Symtab %s has objects from two different Go packages: %s and %s"), |
08be3fe3 DE |
9861 | (symbol_symtab (sym) != NULL |
9862 | ? symtab_to_filename_for_display | |
9863 | (symbol_symtab (sym)) | |
e3b94546 | 9864 | : objfile_name (objfile)), |
a766d390 DE |
9865 | this_package_name, package_name); |
9866 | xfree (this_package_name); | |
9867 | } | |
9868 | } | |
9869 | } | |
9870 | } | |
9871 | ||
9872 | if (package_name != NULL) | |
9873 | { | |
518817b3 | 9874 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
34a68019 | 9875 | const char *saved_package_name |
224c3ddb SM |
9876 | = (const char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
9877 | package_name, | |
9878 | strlen (package_name)); | |
19f392bc UW |
9879 | struct type *type = init_type (objfile, TYPE_CODE_MODULE, 0, |
9880 | saved_package_name); | |
a766d390 DE |
9881 | struct symbol *sym; |
9882 | ||
e623cf5d | 9883 | sym = allocate_symbol (objfile); |
f85f34ed | 9884 | SYMBOL_SET_LANGUAGE (sym, language_go, &objfile->objfile_obstack); |
86f62fd7 TT |
9885 | SYMBOL_SET_NAMES (sym, saved_package_name, |
9886 | strlen (saved_package_name), 0, objfile); | |
a766d390 DE |
9887 | /* This is not VAR_DOMAIN because we want a way to ensure a lookup of, |
9888 | e.g., "main" finds the "main" module and not C's main(). */ | |
9889 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; | |
f1e6e072 | 9890 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
a766d390 DE |
9891 | SYMBOL_TYPE (sym) = type; |
9892 | ||
c24bdb02 | 9893 | add_symbol_to_list (sym, cu->get_builder ()->get_global_symbols ()); |
a766d390 DE |
9894 | |
9895 | xfree (package_name); | |
9896 | } | |
9897 | } | |
9898 | ||
c9317f21 TT |
9899 | /* Allocate a fully-qualified name consisting of the two parts on the |
9900 | obstack. */ | |
9901 | ||
9902 | static const char * | |
9903 | rust_fully_qualify (struct obstack *obstack, const char *p1, const char *p2) | |
9904 | { | |
9905 | return obconcat (obstack, p1, "::", p2, (char *) NULL); | |
9906 | } | |
9907 | ||
9908 | /* A helper that allocates a struct discriminant_info to attach to a | |
9909 | union type. */ | |
9910 | ||
9911 | static struct discriminant_info * | |
9912 | alloc_discriminant_info (struct type *type, int discriminant_index, | |
9913 | int default_index) | |
9914 | { | |
9915 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
c7b15a66 TT |
9916 | gdb_assert (discriminant_index == -1 |
9917 | || (discriminant_index >= 0 | |
9918 | && discriminant_index < TYPE_NFIELDS (type))); | |
c9317f21 | 9919 | gdb_assert (default_index == -1 |
c7b15a66 | 9920 | || (default_index >= 0 && default_index < TYPE_NFIELDS (type))); |
c9317f21 TT |
9921 | |
9922 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
9923 | ||
9924 | struct discriminant_info *disc | |
9925 | = ((struct discriminant_info *) | |
9926 | TYPE_ZALLOC (type, | |
9927 | offsetof (struct discriminant_info, discriminants) | |
9928 | + TYPE_NFIELDS (type) * sizeof (disc->discriminants[0]))); | |
9929 | disc->default_index = default_index; | |
9930 | disc->discriminant_index = discriminant_index; | |
9931 | ||
9932 | struct dynamic_prop prop; | |
9933 | prop.kind = PROP_UNDEFINED; | |
9934 | prop.data.baton = disc; | |
9935 | ||
9936 | add_dyn_prop (DYN_PROP_DISCRIMINATED, prop, type); | |
9937 | ||
9938 | return disc; | |
9939 | } | |
9940 | ||
9941 | /* Some versions of rustc emitted enums in an unusual way. | |
9942 | ||
9943 | Ordinary enums were emitted as unions. The first element of each | |
9944 | structure in the union was named "RUST$ENUM$DISR". This element | |
9945 | held the discriminant. | |
9946 | ||
9947 | These versions of Rust also implemented the "non-zero" | |
9948 | optimization. When the enum had two values, and one is empty and | |
9949 | the other holds a pointer that cannot be zero, the pointer is used | |
9950 | as the discriminant, with a zero value meaning the empty variant. | |
9951 | Here, the union's first member is of the form | |
9952 | RUST$ENCODED$ENUM$<fieldno>$<fieldno>$...$<variantname> | |
9953 | where the fieldnos are the indices of the fields that should be | |
9954 | traversed in order to find the field (which may be several fields deep) | |
9955 | and the variantname is the name of the variant of the case when the | |
9956 | field is zero. | |
9957 | ||
9958 | This function recognizes whether TYPE is of one of these forms, | |
9959 | and, if so, smashes it to be a variant type. */ | |
9960 | ||
9961 | static void | |
9962 | quirk_rust_enum (struct type *type, struct objfile *objfile) | |
9963 | { | |
9964 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_UNION); | |
9965 | ||
9966 | /* We don't need to deal with empty enums. */ | |
9967 | if (TYPE_NFIELDS (type) == 0) | |
9968 | return; | |
9969 | ||
9970 | #define RUST_ENUM_PREFIX "RUST$ENCODED$ENUM$" | |
9971 | if (TYPE_NFIELDS (type) == 1 | |
9972 | && startswith (TYPE_FIELD_NAME (type, 0), RUST_ENUM_PREFIX)) | |
9973 | { | |
9974 | const char *name = TYPE_FIELD_NAME (type, 0) + strlen (RUST_ENUM_PREFIX); | |
9975 | ||
9976 | /* Decode the field name to find the offset of the | |
9977 | discriminant. */ | |
9978 | ULONGEST bit_offset = 0; | |
9979 | struct type *field_type = TYPE_FIELD_TYPE (type, 0); | |
9980 | while (name[0] >= '0' && name[0] <= '9') | |
9981 | { | |
9982 | char *tail; | |
9983 | unsigned long index = strtoul (name, &tail, 10); | |
9984 | name = tail; | |
9985 | if (*name != '$' | |
9986 | || index >= TYPE_NFIELDS (field_type) | |
9987 | || (TYPE_FIELD_LOC_KIND (field_type, index) | |
9988 | != FIELD_LOC_KIND_BITPOS)) | |
9989 | { | |
b98664d3 | 9990 | complaint (_("Could not parse Rust enum encoding string \"%s\"" |
c9317f21 TT |
9991 | "[in module %s]"), |
9992 | TYPE_FIELD_NAME (type, 0), | |
9993 | objfile_name (objfile)); | |
9994 | return; | |
9995 | } | |
9996 | ++name; | |
9997 | ||
9998 | bit_offset += TYPE_FIELD_BITPOS (field_type, index); | |
9999 | field_type = TYPE_FIELD_TYPE (field_type, index); | |
10000 | } | |
10001 | ||
10002 | /* Make a union to hold the variants. */ | |
10003 | struct type *union_type = alloc_type (objfile); | |
10004 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10005 | TYPE_NFIELDS (union_type) = 3; | |
10006 | TYPE_FIELDS (union_type) | |
10007 | = (struct field *) TYPE_ZALLOC (type, 3 * sizeof (struct field)); | |
10008 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10009 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10010 | |
10011 | /* Put the discriminant must at index 0. */ | |
10012 | TYPE_FIELD_TYPE (union_type, 0) = field_type; | |
10013 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10014 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10015 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 0), bit_offset); | |
10016 | ||
10017 | /* The order of fields doesn't really matter, so put the real | |
10018 | field at index 1 and the data-less field at index 2. */ | |
10019 | struct discriminant_info *disc | |
10020 | = alloc_discriminant_info (union_type, 0, 1); | |
10021 | TYPE_FIELD (union_type, 1) = TYPE_FIELD (type, 0); | |
10022 | TYPE_FIELD_NAME (union_type, 1) | |
10023 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1))); | |
10024 | TYPE_NAME (TYPE_FIELD_TYPE (union_type, 1)) | |
10025 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10026 | TYPE_FIELD_NAME (union_type, 1)); | |
10027 | ||
10028 | const char *dataless_name | |
10029 | = rust_fully_qualify (&objfile->objfile_obstack, TYPE_NAME (type), | |
10030 | name); | |
10031 | struct type *dataless_type = init_type (objfile, TYPE_CODE_VOID, 0, | |
10032 | dataless_name); | |
10033 | TYPE_FIELD_TYPE (union_type, 2) = dataless_type; | |
10034 | /* NAME points into the original discriminant name, which | |
10035 | already has the correct lifetime. */ | |
10036 | TYPE_FIELD_NAME (union_type, 2) = name; | |
10037 | SET_FIELD_BITPOS (TYPE_FIELD (union_type, 2), 0); | |
10038 | disc->discriminants[2] = 0; | |
10039 | ||
10040 | /* Smash this type to be a structure type. We have to do this | |
10041 | because the type has already been recorded. */ | |
10042 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10043 | TYPE_NFIELDS (type) = 1; | |
10044 | TYPE_FIELDS (type) | |
10045 | = (struct field *) TYPE_ZALLOC (type, sizeof (struct field)); | |
10046 | ||
10047 | /* Install the variant part. */ | |
10048 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10049 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10050 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10051 | } | |
10052 | else if (TYPE_NFIELDS (type) == 1) | |
10053 | { | |
10054 | /* We assume that a union with a single field is a univariant | |
10055 | enum. */ | |
10056 | /* Smash this type to be a structure type. We have to do this | |
10057 | because the type has already been recorded. */ | |
10058 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10059 | ||
10060 | /* Make a union to hold the variants. */ | |
10061 | struct type *union_type = alloc_type (objfile); | |
10062 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10063 | TYPE_NFIELDS (union_type) = TYPE_NFIELDS (type); | |
10064 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10065 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10066 | TYPE_FIELDS (union_type) = TYPE_FIELDS (type); |
10067 | ||
10068 | struct type *field_type = TYPE_FIELD_TYPE (union_type, 0); | |
10069 | const char *variant_name | |
10070 | = rust_last_path_segment (TYPE_NAME (field_type)); | |
10071 | TYPE_FIELD_NAME (union_type, 0) = variant_name; | |
10072 | TYPE_NAME (field_type) | |
10073 | = rust_fully_qualify (&objfile->objfile_obstack, | |
c7b15a66 | 10074 | TYPE_NAME (type), variant_name); |
c9317f21 TT |
10075 | |
10076 | /* Install the union in the outer struct type. */ | |
10077 | TYPE_NFIELDS (type) = 1; | |
10078 | TYPE_FIELDS (type) | |
10079 | = (struct field *) TYPE_ZALLOC (union_type, sizeof (struct field)); | |
10080 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10081 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10082 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10083 | ||
10084 | alloc_discriminant_info (union_type, -1, 0); | |
10085 | } | |
10086 | else | |
10087 | { | |
10088 | struct type *disr_type = nullptr; | |
10089 | for (int i = 0; i < TYPE_NFIELDS (type); ++i) | |
10090 | { | |
10091 | disr_type = TYPE_FIELD_TYPE (type, i); | |
10092 | ||
a037790e TT |
10093 | if (TYPE_CODE (disr_type) != TYPE_CODE_STRUCT) |
10094 | { | |
10095 | /* All fields of a true enum will be structs. */ | |
10096 | return; | |
10097 | } | |
10098 | else if (TYPE_NFIELDS (disr_type) == 0) | |
c9317f21 TT |
10099 | { |
10100 | /* Could be data-less variant, so keep going. */ | |
a037790e | 10101 | disr_type = nullptr; |
c9317f21 TT |
10102 | } |
10103 | else if (strcmp (TYPE_FIELD_NAME (disr_type, 0), | |
10104 | "RUST$ENUM$DISR") != 0) | |
10105 | { | |
10106 | /* Not a Rust enum. */ | |
10107 | return; | |
10108 | } | |
10109 | else | |
10110 | { | |
10111 | /* Found one. */ | |
10112 | break; | |
10113 | } | |
10114 | } | |
10115 | ||
10116 | /* If we got here without a discriminant, then it's probably | |
10117 | just a union. */ | |
10118 | if (disr_type == nullptr) | |
10119 | return; | |
10120 | ||
10121 | /* Smash this type to be a structure type. We have to do this | |
10122 | because the type has already been recorded. */ | |
10123 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
10124 | ||
10125 | /* Make a union to hold the variants. */ | |
10126 | struct field *disr_field = &TYPE_FIELD (disr_type, 0); | |
10127 | struct type *union_type = alloc_type (objfile); | |
10128 | TYPE_CODE (union_type) = TYPE_CODE_UNION; | |
10129 | TYPE_NFIELDS (union_type) = 1 + TYPE_NFIELDS (type); | |
10130 | TYPE_LENGTH (union_type) = TYPE_LENGTH (type); | |
2b4424c3 | 10131 | set_type_align (union_type, TYPE_RAW_ALIGN (type)); |
c9317f21 TT |
10132 | TYPE_FIELDS (union_type) |
10133 | = (struct field *) TYPE_ZALLOC (union_type, | |
10134 | (TYPE_NFIELDS (union_type) | |
10135 | * sizeof (struct field))); | |
10136 | ||
10137 | memcpy (TYPE_FIELDS (union_type) + 1, TYPE_FIELDS (type), | |
10138 | TYPE_NFIELDS (type) * sizeof (struct field)); | |
10139 | ||
10140 | /* Install the discriminant at index 0 in the union. */ | |
10141 | TYPE_FIELD (union_type, 0) = *disr_field; | |
10142 | TYPE_FIELD_ARTIFICIAL (union_type, 0) = 1; | |
10143 | TYPE_FIELD_NAME (union_type, 0) = "<<discriminant>>"; | |
10144 | ||
10145 | /* Install the union in the outer struct type. */ | |
10146 | TYPE_FIELD_TYPE (type, 0) = union_type; | |
10147 | TYPE_FIELD_NAME (type, 0) = "<<variants>>"; | |
10148 | TYPE_NFIELDS (type) = 1; | |
10149 | ||
10150 | /* Set the size and offset of the union type. */ | |
10151 | SET_FIELD_BITPOS (TYPE_FIELD (type, 0), 0); | |
10152 | ||
10153 | /* We need a way to find the correct discriminant given a | |
10154 | variant name. For convenience we build a map here. */ | |
10155 | struct type *enum_type = FIELD_TYPE (*disr_field); | |
10156 | std::unordered_map<std::string, ULONGEST> discriminant_map; | |
10157 | for (int i = 0; i < TYPE_NFIELDS (enum_type); ++i) | |
10158 | { | |
10159 | if (TYPE_FIELD_LOC_KIND (enum_type, i) == FIELD_LOC_KIND_ENUMVAL) | |
10160 | { | |
10161 | const char *name | |
10162 | = rust_last_path_segment (TYPE_FIELD_NAME (enum_type, i)); | |
10163 | discriminant_map[name] = TYPE_FIELD_ENUMVAL (enum_type, i); | |
10164 | } | |
10165 | } | |
10166 | ||
10167 | int n_fields = TYPE_NFIELDS (union_type); | |
10168 | struct discriminant_info *disc | |
10169 | = alloc_discriminant_info (union_type, 0, -1); | |
10170 | /* Skip the discriminant here. */ | |
10171 | for (int i = 1; i < n_fields; ++i) | |
10172 | { | |
10173 | /* Find the final word in the name of this variant's type. | |
10174 | That name can be used to look up the correct | |
10175 | discriminant. */ | |
10176 | const char *variant_name | |
10177 | = rust_last_path_segment (TYPE_NAME (TYPE_FIELD_TYPE (union_type, | |
10178 | i))); | |
10179 | ||
10180 | auto iter = discriminant_map.find (variant_name); | |
10181 | if (iter != discriminant_map.end ()) | |
10182 | disc->discriminants[i] = iter->second; | |
10183 | ||
bedda9ac | 10184 | /* Remove the discriminant field, if it exists. */ |
c9317f21 | 10185 | struct type *sub_type = TYPE_FIELD_TYPE (union_type, i); |
bedda9ac TT |
10186 | if (TYPE_NFIELDS (sub_type) > 0) |
10187 | { | |
10188 | --TYPE_NFIELDS (sub_type); | |
10189 | ++TYPE_FIELDS (sub_type); | |
10190 | } | |
c9317f21 TT |
10191 | TYPE_FIELD_NAME (union_type, i) = variant_name; |
10192 | TYPE_NAME (sub_type) | |
10193 | = rust_fully_qualify (&objfile->objfile_obstack, | |
10194 | TYPE_NAME (type), variant_name); | |
10195 | } | |
10196 | } | |
10197 | } | |
10198 | ||
10199 | /* Rewrite some Rust unions to be structures with variants parts. */ | |
10200 | ||
10201 | static void | |
10202 | rust_union_quirks (struct dwarf2_cu *cu) | |
10203 | { | |
10204 | gdb_assert (cu->language == language_rust); | |
52941706 SM |
10205 | for (type *type_ : cu->rust_unions) |
10206 | quirk_rust_enum (type_, cu->per_cu->dwarf2_per_objfile->objfile); | |
2d79090e TT |
10207 | /* We don't need this any more. */ |
10208 | cu->rust_unions.clear (); | |
c9317f21 TT |
10209 | } |
10210 | ||
95554aad TT |
10211 | /* Return the symtab for PER_CU. This works properly regardless of |
10212 | whether we're using the index or psymtabs. */ | |
10213 | ||
43f3e411 DE |
10214 | static struct compunit_symtab * |
10215 | get_compunit_symtab (struct dwarf2_per_cu_data *per_cu) | |
95554aad | 10216 | { |
ed2dc618 | 10217 | return (per_cu->dwarf2_per_objfile->using_index |
43f3e411 DE |
10218 | ? per_cu->v.quick->compunit_symtab |
10219 | : per_cu->v.psymtab->compunit_symtab); | |
95554aad TT |
10220 | } |
10221 | ||
10222 | /* A helper function for computing the list of all symbol tables | |
10223 | included by PER_CU. */ | |
10224 | ||
10225 | static void | |
4c39bc03 | 10226 | recursively_compute_inclusions (std::vector<compunit_symtab *> *result, |
ec94af83 | 10227 | htab_t all_children, htab_t all_type_symtabs, |
f9125b6c | 10228 | struct dwarf2_per_cu_data *per_cu, |
43f3e411 | 10229 | struct compunit_symtab *immediate_parent) |
95554aad TT |
10230 | { |
10231 | void **slot; | |
10232 | int ix; | |
43f3e411 | 10233 | struct compunit_symtab *cust; |
95554aad TT |
10234 | struct dwarf2_per_cu_data *iter; |
10235 | ||
10236 | slot = htab_find_slot (all_children, per_cu, INSERT); | |
10237 | if (*slot != NULL) | |
10238 | { | |
10239 | /* This inclusion and its children have been processed. */ | |
10240 | return; | |
10241 | } | |
10242 | ||
10243 | *slot = per_cu; | |
10244 | /* Only add a CU if it has a symbol table. */ | |
43f3e411 DE |
10245 | cust = get_compunit_symtab (per_cu); |
10246 | if (cust != NULL) | |
ec94af83 DE |
10247 | { |
10248 | /* If this is a type unit only add its symbol table if we haven't | |
10249 | seen it yet (type unit per_cu's can share symtabs). */ | |
10250 | if (per_cu->is_debug_types) | |
10251 | { | |
43f3e411 | 10252 | slot = htab_find_slot (all_type_symtabs, cust, INSERT); |
ec94af83 DE |
10253 | if (*slot == NULL) |
10254 | { | |
43f3e411 | 10255 | *slot = cust; |
4c39bc03 | 10256 | result->push_back (cust); |
43f3e411 DE |
10257 | if (cust->user == NULL) |
10258 | cust->user = immediate_parent; | |
ec94af83 DE |
10259 | } |
10260 | } | |
10261 | else | |
f9125b6c | 10262 | { |
4c39bc03 | 10263 | result->push_back (cust); |
43f3e411 DE |
10264 | if (cust->user == NULL) |
10265 | cust->user = immediate_parent; | |
f9125b6c | 10266 | } |
ec94af83 | 10267 | } |
95554aad TT |
10268 | |
10269 | for (ix = 0; | |
796a7ff8 | 10270 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, ix, iter); |
95554aad | 10271 | ++ix) |
ec94af83 DE |
10272 | { |
10273 | recursively_compute_inclusions (result, all_children, | |
43f3e411 | 10274 | all_type_symtabs, iter, cust); |
ec94af83 | 10275 | } |
95554aad TT |
10276 | } |
10277 | ||
43f3e411 | 10278 | /* Compute the compunit_symtab 'includes' fields for the compunit_symtab of |
95554aad TT |
10279 | PER_CU. */ |
10280 | ||
10281 | static void | |
43f3e411 | 10282 | compute_compunit_symtab_includes (struct dwarf2_per_cu_data *per_cu) |
95554aad | 10283 | { |
f4dc4d17 DE |
10284 | gdb_assert (! per_cu->is_debug_types); |
10285 | ||
796a7ff8 | 10286 | if (!VEC_empty (dwarf2_per_cu_ptr, per_cu->imported_symtabs)) |
95554aad TT |
10287 | { |
10288 | int ix, len; | |
ec94af83 | 10289 | struct dwarf2_per_cu_data *per_cu_iter; |
4c39bc03 | 10290 | std::vector<compunit_symtab *> result_symtabs; |
ec94af83 | 10291 | htab_t all_children, all_type_symtabs; |
43f3e411 | 10292 | struct compunit_symtab *cust = get_compunit_symtab (per_cu); |
95554aad TT |
10293 | |
10294 | /* If we don't have a symtab, we can just skip this case. */ | |
43f3e411 | 10295 | if (cust == NULL) |
95554aad TT |
10296 | return; |
10297 | ||
10298 | all_children = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, | |
10299 | NULL, xcalloc, xfree); | |
ec94af83 DE |
10300 | all_type_symtabs = htab_create_alloc (1, htab_hash_pointer, htab_eq_pointer, |
10301 | NULL, xcalloc, xfree); | |
95554aad TT |
10302 | |
10303 | for (ix = 0; | |
796a7ff8 | 10304 | VEC_iterate (dwarf2_per_cu_ptr, per_cu->imported_symtabs, |
ec94af83 | 10305 | ix, per_cu_iter); |
95554aad | 10306 | ++ix) |
ec94af83 DE |
10307 | { |
10308 | recursively_compute_inclusions (&result_symtabs, all_children, | |
f9125b6c | 10309 | all_type_symtabs, per_cu_iter, |
43f3e411 | 10310 | cust); |
ec94af83 | 10311 | } |
95554aad | 10312 | |
ec94af83 | 10313 | /* Now we have a transitive closure of all the included symtabs. */ |
4c39bc03 | 10314 | len = result_symtabs.size (); |
43f3e411 | 10315 | cust->includes |
ed2dc618 | 10316 | = XOBNEWVEC (&per_cu->dwarf2_per_objfile->objfile->objfile_obstack, |
8d749320 | 10317 | struct compunit_symtab *, len + 1); |
4c39bc03 TT |
10318 | memcpy (cust->includes, result_symtabs.data (), |
10319 | len * sizeof (compunit_symtab *)); | |
43f3e411 | 10320 | cust->includes[len] = NULL; |
95554aad | 10321 | |
95554aad | 10322 | htab_delete (all_children); |
ec94af83 | 10323 | htab_delete (all_type_symtabs); |
95554aad TT |
10324 | } |
10325 | } | |
10326 | ||
10327 | /* Compute the 'includes' field for the symtabs of all the CUs we just | |
10328 | read. */ | |
10329 | ||
10330 | static void | |
ed2dc618 | 10331 | process_cu_includes (struct dwarf2_per_objfile *dwarf2_per_objfile) |
95554aad | 10332 | { |
71b73764 | 10333 | for (dwarf2_per_cu_data *iter : dwarf2_per_objfile->just_read_cus) |
f4dc4d17 DE |
10334 | { |
10335 | if (! iter->is_debug_types) | |
43f3e411 | 10336 | compute_compunit_symtab_includes (iter); |
f4dc4d17 | 10337 | } |
95554aad | 10338 | |
c5d0225d | 10339 | dwarf2_per_objfile->just_read_cus.clear (); |
95554aad TT |
10340 | } |
10341 | ||
9cdd5dbd | 10342 | /* Generate full symbol information for PER_CU, whose DIEs have |
10b3939b DJ |
10343 | already been loaded into memory. */ |
10344 | ||
10345 | static void | |
95554aad TT |
10346 | process_full_comp_unit (struct dwarf2_per_cu_data *per_cu, |
10347 | enum language pretend_language) | |
10b3939b | 10348 | { |
10b3939b | 10349 | struct dwarf2_cu *cu = per_cu->cu; |
ed2dc618 SM |
10350 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10351 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
3e29f34a | 10352 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
10b3939b | 10353 | CORE_ADDR lowpc, highpc; |
43f3e411 | 10354 | struct compunit_symtab *cust; |
10b3939b | 10355 | CORE_ADDR baseaddr; |
4359dff1 | 10356 | struct block *static_block; |
3e29f34a | 10357 | CORE_ADDR addr; |
10b3939b DJ |
10358 | |
10359 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
10360 | ||
c89b44cd TT |
10361 | /* Clear the list here in case something was left over. */ |
10362 | cu->method_list.clear (); | |
10b3939b | 10363 | |
95554aad TT |
10364 | cu->language = pretend_language; |
10365 | cu->language_defn = language_def (cu->language); | |
10366 | ||
c906108c | 10367 | /* Do line number decoding in read_file_scope () */ |
10b3939b | 10368 | process_die (cu->dies, cu); |
c906108c | 10369 | |
a766d390 DE |
10370 | /* For now fudge the Go package. */ |
10371 | if (cu->language == language_go) | |
10372 | fixup_go_packaging (cu); | |
10373 | ||
3da10d80 KS |
10374 | /* Now that we have processed all the DIEs in the CU, all the types |
10375 | should be complete, and it should now be safe to compute all of the | |
10376 | physnames. */ | |
10377 | compute_delayed_physnames (cu); | |
3da10d80 | 10378 | |
c9317f21 TT |
10379 | if (cu->language == language_rust) |
10380 | rust_union_quirks (cu); | |
10381 | ||
fae299cd DC |
10382 | /* Some compilers don't define a DW_AT_high_pc attribute for the |
10383 | compilation unit. If the DW_AT_high_pc is missing, synthesize | |
10384 | it, by scanning the DIE's below the compilation unit. */ | |
10b3939b | 10385 | get_scope_pc_bounds (cu->dies, &lowpc, &highpc, cu); |
c906108c | 10386 | |
3e29f34a | 10387 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); |
c24bdb02 | 10388 | static_block = cu->get_builder ()->end_symtab_get_static_block (addr, 0, 1); |
4359dff1 JK |
10389 | |
10390 | /* If the comp unit has DW_AT_ranges, it may have discontiguous ranges. | |
10391 | Also, DW_AT_ranges may record ranges not belonging to any child DIEs | |
10392 | (such as virtual method tables). Record the ranges in STATIC_BLOCK's | |
10393 | addrmap to help ensure it has an accurate map of pc values belonging to | |
10394 | this comp unit. */ | |
10395 | dwarf2_record_block_ranges (cu->dies, static_block, baseaddr, cu); | |
10396 | ||
c24bdb02 | 10397 | cust = cu->get_builder ()->end_symtab_from_static_block (static_block, |
804d2729 TT |
10398 | SECT_OFF_TEXT (objfile), |
10399 | 0); | |
c906108c | 10400 | |
43f3e411 | 10401 | if (cust != NULL) |
c906108c | 10402 | { |
df15bd07 | 10403 | int gcc_4_minor = producer_is_gcc_ge_4 (cu->producer); |
4632c0d0 | 10404 | |
8be455d7 JK |
10405 | /* Set symtab language to language from DW_AT_language. If the |
10406 | compilation is from a C file generated by language preprocessors, do | |
10407 | not set the language if it was already deduced by start_subfile. */ | |
43f3e411 | 10408 | if (!(cu->language == language_c |
40e3ad0e | 10409 | && COMPUNIT_FILETABS (cust)->language != language_unknown)) |
43f3e411 | 10410 | COMPUNIT_FILETABS (cust)->language = cu->language; |
8be455d7 JK |
10411 | |
10412 | /* GCC-4.0 has started to support -fvar-tracking. GCC-3.x still can | |
10413 | produce DW_AT_location with location lists but it can be possibly | |
ab260dad JK |
10414 | invalid without -fvar-tracking. Still up to GCC-4.4.x incl. 4.4.0 |
10415 | there were bugs in prologue debug info, fixed later in GCC-4.5 | |
10416 | by "unwind info for epilogues" patch (which is not directly related). | |
8be455d7 JK |
10417 | |
10418 | For -gdwarf-4 type units LOCATIONS_VALID indication is fortunately not | |
10419 | needed, it would be wrong due to missing DW_AT_producer there. | |
10420 | ||
10421 | Still one can confuse GDB by using non-standard GCC compilation | |
10422 | options - this waits on GCC PR other/32998 (-frecord-gcc-switches). | |
10423 | */ | |
ab260dad | 10424 | if (cu->has_loclist && gcc_4_minor >= 5) |
43f3e411 | 10425 | cust->locations_valid = 1; |
e0d00bc7 JK |
10426 | |
10427 | if (gcc_4_minor >= 5) | |
43f3e411 | 10428 | cust->epilogue_unwind_valid = 1; |
96408a79 | 10429 | |
43f3e411 | 10430 | cust->call_site_htab = cu->call_site_htab; |
c906108c | 10431 | } |
9291a0cd TT |
10432 | |
10433 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10434 | per_cu->v.quick->compunit_symtab = cust; |
9291a0cd TT |
10435 | else |
10436 | { | |
10437 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10438 | pst->compunit_symtab = cust; |
9291a0cd TT |
10439 | pst->readin = 1; |
10440 | } | |
c906108c | 10441 | |
95554aad | 10442 | /* Push it for inclusion processing later. */ |
c5d0225d | 10443 | dwarf2_per_objfile->just_read_cus.push_back (per_cu); |
804d2729 TT |
10444 | |
10445 | /* Not needed any more. */ | |
c24bdb02 | 10446 | cu->reset_builder (); |
f4dc4d17 | 10447 | } |
45cfd468 | 10448 | |
f4dc4d17 DE |
10449 | /* Generate full symbol information for type unit PER_CU, whose DIEs have |
10450 | already been loaded into memory. */ | |
10451 | ||
10452 | static void | |
10453 | process_full_type_unit (struct dwarf2_per_cu_data *per_cu, | |
10454 | enum language pretend_language) | |
10455 | { | |
10456 | struct dwarf2_cu *cu = per_cu->cu; | |
ed2dc618 SM |
10457 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
10458 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
43f3e411 | 10459 | struct compunit_symtab *cust; |
0186c6a7 DE |
10460 | struct signatured_type *sig_type; |
10461 | ||
10462 | gdb_assert (per_cu->is_debug_types); | |
10463 | sig_type = (struct signatured_type *) per_cu; | |
f4dc4d17 | 10464 | |
c89b44cd TT |
10465 | /* Clear the list here in case something was left over. */ |
10466 | cu->method_list.clear (); | |
f4dc4d17 | 10467 | |
f4dc4d17 DE |
10468 | cu->language = pretend_language; |
10469 | cu->language_defn = language_def (cu->language); | |
10470 | ||
10471 | /* The symbol tables are set up in read_type_unit_scope. */ | |
10472 | process_die (cu->dies, cu); | |
10473 | ||
10474 | /* For now fudge the Go package. */ | |
10475 | if (cu->language == language_go) | |
10476 | fixup_go_packaging (cu); | |
10477 | ||
10478 | /* Now that we have processed all the DIEs in the CU, all the types | |
10479 | should be complete, and it should now be safe to compute all of the | |
10480 | physnames. */ | |
10481 | compute_delayed_physnames (cu); | |
f4dc4d17 | 10482 | |
c9317f21 TT |
10483 | if (cu->language == language_rust) |
10484 | rust_union_quirks (cu); | |
10485 | ||
f4dc4d17 DE |
10486 | /* TUs share symbol tables. |
10487 | If this is the first TU to use this symtab, complete the construction | |
094b34ac DE |
10488 | of it with end_expandable_symtab. Otherwise, complete the addition of |
10489 | this TU's symbols to the existing symtab. */ | |
43f3e411 | 10490 | if (sig_type->type_unit_group->compunit_symtab == NULL) |
45cfd468 | 10491 | { |
c24bdb02 KS |
10492 | buildsym_compunit *builder = cu->get_builder (); |
10493 | cust = builder->end_expandable_symtab (0, SECT_OFF_TEXT (objfile)); | |
43f3e411 | 10494 | sig_type->type_unit_group->compunit_symtab = cust; |
f4dc4d17 | 10495 | |
43f3e411 | 10496 | if (cust != NULL) |
f4dc4d17 DE |
10497 | { |
10498 | /* Set symtab language to language from DW_AT_language. If the | |
10499 | compilation is from a C file generated by language preprocessors, | |
10500 | do not set the language if it was already deduced by | |
10501 | start_subfile. */ | |
43f3e411 DE |
10502 | if (!(cu->language == language_c |
10503 | && COMPUNIT_FILETABS (cust)->language != language_c)) | |
10504 | COMPUNIT_FILETABS (cust)->language = cu->language; | |
f4dc4d17 DE |
10505 | } |
10506 | } | |
10507 | else | |
10508 | { | |
c24bdb02 | 10509 | cu->get_builder ()->augment_type_symtab (); |
43f3e411 | 10510 | cust = sig_type->type_unit_group->compunit_symtab; |
f4dc4d17 DE |
10511 | } |
10512 | ||
10513 | if (dwarf2_per_objfile->using_index) | |
43f3e411 | 10514 | per_cu->v.quick->compunit_symtab = cust; |
f4dc4d17 DE |
10515 | else |
10516 | { | |
10517 | struct partial_symtab *pst = per_cu->v.psymtab; | |
43f3e411 | 10518 | pst->compunit_symtab = cust; |
f4dc4d17 | 10519 | pst->readin = 1; |
45cfd468 | 10520 | } |
804d2729 TT |
10521 | |
10522 | /* Not needed any more. */ | |
c24bdb02 | 10523 | cu->reset_builder (); |
c906108c SS |
10524 | } |
10525 | ||
95554aad TT |
10526 | /* Process an imported unit DIE. */ |
10527 | ||
10528 | static void | |
10529 | process_imported_unit_die (struct die_info *die, struct dwarf2_cu *cu) | |
10530 | { | |
10531 | struct attribute *attr; | |
10532 | ||
f4dc4d17 DE |
10533 | /* For now we don't handle imported units in type units. */ |
10534 | if (cu->per_cu->is_debug_types) | |
10535 | { | |
10536 | error (_("Dwarf Error: DW_TAG_imported_unit is not" | |
10537 | " supported in type units [in module %s]"), | |
518817b3 | 10538 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
f4dc4d17 DE |
10539 | } |
10540 | ||
95554aad TT |
10541 | attr = dwarf2_attr (die, DW_AT_import, cu); |
10542 | if (attr != NULL) | |
10543 | { | |
9c541725 PA |
10544 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
10545 | bool is_dwz = (attr->form == DW_FORM_GNU_ref_alt || cu->per_cu->is_dwz); | |
10546 | dwarf2_per_cu_data *per_cu | |
e3b94546 | 10547 | = dwarf2_find_containing_comp_unit (sect_off, is_dwz, |
518817b3 | 10548 | cu->per_cu->dwarf2_per_objfile); |
95554aad | 10549 | |
69d751e3 | 10550 | /* If necessary, add it to the queue and load its DIEs. */ |
95554aad | 10551 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 10552 | load_full_comp_unit (per_cu, false, cu->language); |
95554aad | 10553 | |
796a7ff8 | 10554 | VEC_safe_push (dwarf2_per_cu_ptr, cu->per_cu->imported_symtabs, |
95554aad TT |
10555 | per_cu); |
10556 | } | |
10557 | } | |
10558 | ||
4c8aa72d PA |
10559 | /* RAII object that represents a process_die scope: i.e., |
10560 | starts/finishes processing a DIE. */ | |
10561 | class process_die_scope | |
adde2bff | 10562 | { |
4c8aa72d PA |
10563 | public: |
10564 | process_die_scope (die_info *die, dwarf2_cu *cu) | |
10565 | : m_die (die), m_cu (cu) | |
10566 | { | |
10567 | /* We should only be processing DIEs not already in process. */ | |
10568 | gdb_assert (!m_die->in_process); | |
10569 | m_die->in_process = true; | |
10570 | } | |
8c3cb9fa | 10571 | |
4c8aa72d PA |
10572 | ~process_die_scope () |
10573 | { | |
10574 | m_die->in_process = false; | |
10575 | ||
10576 | /* If we're done processing the DIE for the CU that owns the line | |
10577 | header, we don't need the line header anymore. */ | |
10578 | if (m_cu->line_header_die_owner == m_die) | |
10579 | { | |
10580 | delete m_cu->line_header; | |
10581 | m_cu->line_header = NULL; | |
10582 | m_cu->line_header_die_owner = NULL; | |
10583 | } | |
10584 | } | |
10585 | ||
10586 | private: | |
10587 | die_info *m_die; | |
10588 | dwarf2_cu *m_cu; | |
10589 | }; | |
adde2bff | 10590 | |
c906108c SS |
10591 | /* Process a die and its children. */ |
10592 | ||
10593 | static void | |
e7c27a73 | 10594 | process_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 10595 | { |
4c8aa72d | 10596 | process_die_scope scope (die, cu); |
adde2bff | 10597 | |
c906108c SS |
10598 | switch (die->tag) |
10599 | { | |
10600 | case DW_TAG_padding: | |
10601 | break; | |
10602 | case DW_TAG_compile_unit: | |
95554aad | 10603 | case DW_TAG_partial_unit: |
e7c27a73 | 10604 | read_file_scope (die, cu); |
c906108c | 10605 | break; |
348e048f DE |
10606 | case DW_TAG_type_unit: |
10607 | read_type_unit_scope (die, cu); | |
10608 | break; | |
c906108c | 10609 | case DW_TAG_subprogram: |
c906108c | 10610 | case DW_TAG_inlined_subroutine: |
edb3359d | 10611 | read_func_scope (die, cu); |
c906108c SS |
10612 | break; |
10613 | case DW_TAG_lexical_block: | |
14898363 L |
10614 | case DW_TAG_try_block: |
10615 | case DW_TAG_catch_block: | |
e7c27a73 | 10616 | read_lexical_block_scope (die, cu); |
c906108c | 10617 | break; |
216f72a1 | 10618 | case DW_TAG_call_site: |
96408a79 SA |
10619 | case DW_TAG_GNU_call_site: |
10620 | read_call_site_scope (die, cu); | |
10621 | break; | |
c906108c | 10622 | case DW_TAG_class_type: |
680b30c7 | 10623 | case DW_TAG_interface_type: |
c906108c SS |
10624 | case DW_TAG_structure_type: |
10625 | case DW_TAG_union_type: | |
134d01f1 | 10626 | process_structure_scope (die, cu); |
c906108c SS |
10627 | break; |
10628 | case DW_TAG_enumeration_type: | |
134d01f1 | 10629 | process_enumeration_scope (die, cu); |
c906108c | 10630 | break; |
134d01f1 | 10631 | |
f792889a DJ |
10632 | /* These dies have a type, but processing them does not create |
10633 | a symbol or recurse to process the children. Therefore we can | |
10634 | read them on-demand through read_type_die. */ | |
c906108c | 10635 | case DW_TAG_subroutine_type: |
72019c9c | 10636 | case DW_TAG_set_type: |
c906108c | 10637 | case DW_TAG_array_type: |
c906108c | 10638 | case DW_TAG_pointer_type: |
c906108c | 10639 | case DW_TAG_ptr_to_member_type: |
c906108c | 10640 | case DW_TAG_reference_type: |
4297a3f0 | 10641 | case DW_TAG_rvalue_reference_type: |
c906108c | 10642 | case DW_TAG_string_type: |
c906108c | 10643 | break; |
134d01f1 | 10644 | |
c906108c | 10645 | case DW_TAG_base_type: |
a02abb62 | 10646 | case DW_TAG_subrange_type: |
cb249c71 | 10647 | case DW_TAG_typedef: |
134d01f1 DJ |
10648 | /* Add a typedef symbol for the type definition, if it has a |
10649 | DW_AT_name. */ | |
f792889a | 10650 | new_symbol (die, read_type_die (die, cu), cu); |
a02abb62 | 10651 | break; |
c906108c | 10652 | case DW_TAG_common_block: |
e7c27a73 | 10653 | read_common_block (die, cu); |
c906108c SS |
10654 | break; |
10655 | case DW_TAG_common_inclusion: | |
10656 | break; | |
d9fa45fe | 10657 | case DW_TAG_namespace: |
9068261f | 10658 | cu->processing_has_namespace_info = true; |
e7c27a73 | 10659 | read_namespace (die, cu); |
d9fa45fe | 10660 | break; |
5d7cb8df | 10661 | case DW_TAG_module: |
9068261f | 10662 | cu->processing_has_namespace_info = true; |
5d7cb8df JK |
10663 | read_module (die, cu); |
10664 | break; | |
d9fa45fe | 10665 | case DW_TAG_imported_declaration: |
9068261f | 10666 | cu->processing_has_namespace_info = true; |
74921315 KS |
10667 | if (read_namespace_alias (die, cu)) |
10668 | break; | |
86a73007 TT |
10669 | /* The declaration is not a global namespace alias. */ |
10670 | /* Fall through. */ | |
d9fa45fe | 10671 | case DW_TAG_imported_module: |
9068261f | 10672 | cu->processing_has_namespace_info = true; |
27aa8d6a SW |
10673 | if (die->child != NULL && (die->tag == DW_TAG_imported_declaration |
10674 | || cu->language != language_fortran)) | |
b98664d3 | 10675 | complaint (_("Tag '%s' has unexpected children"), |
27aa8d6a SW |
10676 | dwarf_tag_name (die->tag)); |
10677 | read_import_statement (die, cu); | |
d9fa45fe | 10678 | break; |
95554aad TT |
10679 | |
10680 | case DW_TAG_imported_unit: | |
10681 | process_imported_unit_die (die, cu); | |
10682 | break; | |
10683 | ||
71a3c369 TT |
10684 | case DW_TAG_variable: |
10685 | read_variable (die, cu); | |
10686 | break; | |
10687 | ||
c906108c | 10688 | default: |
e7c27a73 | 10689 | new_symbol (die, NULL, cu); |
c906108c SS |
10690 | break; |
10691 | } | |
10692 | } | |
ca69b9e6 DE |
10693 | \f |
10694 | /* DWARF name computation. */ | |
c906108c | 10695 | |
94af9270 KS |
10696 | /* A helper function for dwarf2_compute_name which determines whether DIE |
10697 | needs to have the name of the scope prepended to the name listed in the | |
10698 | die. */ | |
10699 | ||
10700 | static int | |
10701 | die_needs_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
10702 | { | |
1c809c68 TT |
10703 | struct attribute *attr; |
10704 | ||
94af9270 KS |
10705 | switch (die->tag) |
10706 | { | |
10707 | case DW_TAG_namespace: | |
10708 | case DW_TAG_typedef: | |
10709 | case DW_TAG_class_type: | |
10710 | case DW_TAG_interface_type: | |
10711 | case DW_TAG_structure_type: | |
10712 | case DW_TAG_union_type: | |
10713 | case DW_TAG_enumeration_type: | |
10714 | case DW_TAG_enumerator: | |
10715 | case DW_TAG_subprogram: | |
08a76f8a | 10716 | case DW_TAG_inlined_subroutine: |
94af9270 | 10717 | case DW_TAG_member: |
74921315 | 10718 | case DW_TAG_imported_declaration: |
94af9270 KS |
10719 | return 1; |
10720 | ||
10721 | case DW_TAG_variable: | |
c2b0a229 | 10722 | case DW_TAG_constant: |
94af9270 KS |
10723 | /* We only need to prefix "globally" visible variables. These include |
10724 | any variable marked with DW_AT_external or any variable that | |
10725 | lives in a namespace. [Variables in anonymous namespaces | |
10726 | require prefixing, but they are not DW_AT_external.] */ | |
10727 | ||
10728 | if (dwarf2_attr (die, DW_AT_specification, cu)) | |
10729 | { | |
10730 | struct dwarf2_cu *spec_cu = cu; | |
9a619af0 | 10731 | |
94af9270 KS |
10732 | return die_needs_namespace (die_specification (die, &spec_cu), |
10733 | spec_cu); | |
10734 | } | |
10735 | ||
1c809c68 | 10736 | attr = dwarf2_attr (die, DW_AT_external, cu); |
f55ee35c JK |
10737 | if (attr == NULL && die->parent->tag != DW_TAG_namespace |
10738 | && die->parent->tag != DW_TAG_module) | |
1c809c68 TT |
10739 | return 0; |
10740 | /* A variable in a lexical block of some kind does not need a | |
10741 | namespace, even though in C++ such variables may be external | |
10742 | and have a mangled name. */ | |
10743 | if (die->parent->tag == DW_TAG_lexical_block | |
10744 | || die->parent->tag == DW_TAG_try_block | |
1054b214 TT |
10745 | || die->parent->tag == DW_TAG_catch_block |
10746 | || die->parent->tag == DW_TAG_subprogram) | |
1c809c68 TT |
10747 | return 0; |
10748 | return 1; | |
94af9270 KS |
10749 | |
10750 | default: | |
10751 | return 0; | |
10752 | } | |
10753 | } | |
10754 | ||
73b9be8b KS |
10755 | /* Return the DIE's linkage name attribute, either DW_AT_linkage_name |
10756 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10757 | defined for the given DIE. */ | |
10758 | ||
10759 | static struct attribute * | |
10760 | dw2_linkage_name_attr (struct die_info *die, struct dwarf2_cu *cu) | |
10761 | { | |
10762 | struct attribute *attr; | |
10763 | ||
10764 | attr = dwarf2_attr (die, DW_AT_linkage_name, cu); | |
10765 | if (attr == NULL) | |
10766 | attr = dwarf2_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10767 | ||
10768 | return attr; | |
10769 | } | |
10770 | ||
10771 | /* Return the DIE's linkage name as a string, either DW_AT_linkage_name | |
10772 | or DW_AT_MIPS_linkage_name. Returns NULL if the attribute is not | |
10773 | defined for the given DIE. */ | |
10774 | ||
10775 | static const char * | |
10776 | dw2_linkage_name (struct die_info *die, struct dwarf2_cu *cu) | |
10777 | { | |
10778 | const char *linkage_name; | |
10779 | ||
10780 | linkage_name = dwarf2_string_attr (die, DW_AT_linkage_name, cu); | |
10781 | if (linkage_name == NULL) | |
10782 | linkage_name = dwarf2_string_attr (die, DW_AT_MIPS_linkage_name, cu); | |
10783 | ||
10784 | return linkage_name; | |
10785 | } | |
10786 | ||
94af9270 | 10787 | /* Compute the fully qualified name of DIE in CU. If PHYSNAME is nonzero, |
a766d390 | 10788 | compute the physname for the object, which include a method's: |
9c37b5ae | 10789 | - formal parameters (C++), |
a766d390 | 10790 | - receiver type (Go), |
a766d390 DE |
10791 | |
10792 | The term "physname" is a bit confusing. | |
10793 | For C++, for example, it is the demangled name. | |
10794 | For Go, for example, it's the mangled name. | |
94af9270 | 10795 | |
af6b7be1 JB |
10796 | For Ada, return the DIE's linkage name rather than the fully qualified |
10797 | name. PHYSNAME is ignored.. | |
10798 | ||
94af9270 KS |
10799 | The result is allocated on the objfile_obstack and canonicalized. */ |
10800 | ||
10801 | static const char * | |
15d034d0 TT |
10802 | dwarf2_compute_name (const char *name, |
10803 | struct die_info *die, struct dwarf2_cu *cu, | |
94af9270 KS |
10804 | int physname) |
10805 | { | |
518817b3 | 10806 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
bb5ed363 | 10807 | |
94af9270 KS |
10808 | if (name == NULL) |
10809 | name = dwarf2_name (die, cu); | |
10810 | ||
2ee7123e DE |
10811 | /* For Fortran GDB prefers DW_AT_*linkage_name for the physname if present |
10812 | but otherwise compute it by typename_concat inside GDB. | |
10813 | FIXME: Actually this is not really true, or at least not always true. | |
10814 | It's all very confusing. SYMBOL_SET_NAMES doesn't try to demangle | |
5e2db402 | 10815 | Fortran names because there is no mangling standard. So new_symbol |
2ee7123e DE |
10816 | will set the demangled name to the result of dwarf2_full_name, and it is |
10817 | the demangled name that GDB uses if it exists. */ | |
f55ee35c JK |
10818 | if (cu->language == language_ada |
10819 | || (cu->language == language_fortran && physname)) | |
10820 | { | |
10821 | /* For Ada unit, we prefer the linkage name over the name, as | |
10822 | the former contains the exported name, which the user expects | |
10823 | to be able to reference. Ideally, we want the user to be able | |
10824 | to reference this entity using either natural or linkage name, | |
10825 | but we haven't started looking at this enhancement yet. */ | |
73b9be8b | 10826 | const char *linkage_name = dw2_linkage_name (die, cu); |
f55ee35c | 10827 | |
2ee7123e DE |
10828 | if (linkage_name != NULL) |
10829 | return linkage_name; | |
f55ee35c JK |
10830 | } |
10831 | ||
94af9270 KS |
10832 | /* These are the only languages we know how to qualify names in. */ |
10833 | if (name != NULL | |
9c37b5ae | 10834 | && (cu->language == language_cplus |
c44af4eb TT |
10835 | || cu->language == language_fortran || cu->language == language_d |
10836 | || cu->language == language_rust)) | |
94af9270 KS |
10837 | { |
10838 | if (die_needs_namespace (die, cu)) | |
10839 | { | |
0d5cff50 | 10840 | const char *prefix; |
34a68019 | 10841 | const char *canonical_name = NULL; |
94af9270 | 10842 | |
d7e74731 PA |
10843 | string_file buf; |
10844 | ||
94af9270 | 10845 | prefix = determine_prefix (die, cu); |
94af9270 KS |
10846 | if (*prefix != '\0') |
10847 | { | |
f55ee35c JK |
10848 | char *prefixed_name = typename_concat (NULL, prefix, name, |
10849 | physname, cu); | |
9a619af0 | 10850 | |
d7e74731 | 10851 | buf.puts (prefixed_name); |
94af9270 KS |
10852 | xfree (prefixed_name); |
10853 | } | |
10854 | else | |
d7e74731 | 10855 | buf.puts (name); |
94af9270 | 10856 | |
98bfdba5 PA |
10857 | /* Template parameters may be specified in the DIE's DW_AT_name, or |
10858 | as children with DW_TAG_template_type_param or | |
10859 | DW_TAG_value_type_param. If the latter, add them to the name | |
10860 | here. If the name already has template parameters, then | |
10861 | skip this step; some versions of GCC emit both, and | |
10862 | it is more efficient to use the pre-computed name. | |
10863 | ||
10864 | Something to keep in mind about this process: it is very | |
10865 | unlikely, or in some cases downright impossible, to produce | |
10866 | something that will match the mangled name of a function. | |
10867 | If the definition of the function has the same debug info, | |
10868 | we should be able to match up with it anyway. But fallbacks | |
10869 | using the minimal symbol, for instance to find a method | |
10870 | implemented in a stripped copy of libstdc++, will not work. | |
10871 | If we do not have debug info for the definition, we will have to | |
10872 | match them up some other way. | |
10873 | ||
10874 | When we do name matching there is a related problem with function | |
10875 | templates; two instantiated function templates are allowed to | |
10876 | differ only by their return types, which we do not add here. */ | |
10877 | ||
10878 | if (cu->language == language_cplus && strchr (name, '<') == NULL) | |
10879 | { | |
10880 | struct attribute *attr; | |
10881 | struct die_info *child; | |
10882 | int first = 1; | |
10883 | ||
10884 | die->building_fullname = 1; | |
10885 | ||
10886 | for (child = die->child; child != NULL; child = child->sibling) | |
10887 | { | |
10888 | struct type *type; | |
12df843f | 10889 | LONGEST value; |
d521ce57 | 10890 | const gdb_byte *bytes; |
98bfdba5 PA |
10891 | struct dwarf2_locexpr_baton *baton; |
10892 | struct value *v; | |
10893 | ||
10894 | if (child->tag != DW_TAG_template_type_param | |
10895 | && child->tag != DW_TAG_template_value_param) | |
10896 | continue; | |
10897 | ||
10898 | if (first) | |
10899 | { | |
d7e74731 | 10900 | buf.puts ("<"); |
98bfdba5 PA |
10901 | first = 0; |
10902 | } | |
10903 | else | |
d7e74731 | 10904 | buf.puts (", "); |
98bfdba5 PA |
10905 | |
10906 | attr = dwarf2_attr (child, DW_AT_type, cu); | |
10907 | if (attr == NULL) | |
10908 | { | |
b98664d3 | 10909 | complaint (_("template parameter missing DW_AT_type")); |
d7e74731 | 10910 | buf.puts ("UNKNOWN_TYPE"); |
98bfdba5 PA |
10911 | continue; |
10912 | } | |
10913 | type = die_type (child, cu); | |
10914 | ||
10915 | if (child->tag == DW_TAG_template_type_param) | |
10916 | { | |
c1ec8cea TT |
10917 | c_print_type (type, "", &buf, -1, 0, cu->language, |
10918 | &type_print_raw_options); | |
98bfdba5 PA |
10919 | continue; |
10920 | } | |
10921 | ||
10922 | attr = dwarf2_attr (child, DW_AT_const_value, cu); | |
10923 | if (attr == NULL) | |
10924 | { | |
b98664d3 | 10925 | complaint (_("template parameter missing " |
3e43a32a | 10926 | "DW_AT_const_value")); |
d7e74731 | 10927 | buf.puts ("UNKNOWN_VALUE"); |
98bfdba5 PA |
10928 | continue; |
10929 | } | |
10930 | ||
10931 | dwarf2_const_value_attr (attr, type, name, | |
10932 | &cu->comp_unit_obstack, cu, | |
10933 | &value, &bytes, &baton); | |
10934 | ||
10935 | if (TYPE_NOSIGN (type)) | |
10936 | /* GDB prints characters as NUMBER 'CHAR'. If that's | |
10937 | changed, this can use value_print instead. */ | |
d7e74731 | 10938 | c_printchar (value, type, &buf); |
98bfdba5 PA |
10939 | else |
10940 | { | |
10941 | struct value_print_options opts; | |
10942 | ||
10943 | if (baton != NULL) | |
10944 | v = dwarf2_evaluate_loc_desc (type, NULL, | |
10945 | baton->data, | |
10946 | baton->size, | |
10947 | baton->per_cu); | |
10948 | else if (bytes != NULL) | |
10949 | { | |
10950 | v = allocate_value (type); | |
10951 | memcpy (value_contents_writeable (v), bytes, | |
10952 | TYPE_LENGTH (type)); | |
10953 | } | |
10954 | else | |
10955 | v = value_from_longest (type, value); | |
10956 | ||
3e43a32a MS |
10957 | /* Specify decimal so that we do not depend on |
10958 | the radix. */ | |
98bfdba5 PA |
10959 | get_formatted_print_options (&opts, 'd'); |
10960 | opts.raw = 1; | |
d7e74731 | 10961 | value_print (v, &buf, &opts); |
98bfdba5 | 10962 | release_value (v); |
98bfdba5 PA |
10963 | } |
10964 | } | |
10965 | ||
10966 | die->building_fullname = 0; | |
10967 | ||
10968 | if (!first) | |
10969 | { | |
10970 | /* Close the argument list, with a space if necessary | |
10971 | (nested templates). */ | |
d7e74731 PA |
10972 | if (!buf.empty () && buf.string ().back () == '>') |
10973 | buf.puts (" >"); | |
98bfdba5 | 10974 | else |
d7e74731 | 10975 | buf.puts (">"); |
98bfdba5 PA |
10976 | } |
10977 | } | |
10978 | ||
9c37b5ae | 10979 | /* For C++ methods, append formal parameter type |
94af9270 | 10980 | information, if PHYSNAME. */ |
6e70227d | 10981 | |
94af9270 | 10982 | if (physname && die->tag == DW_TAG_subprogram |
9c37b5ae | 10983 | && cu->language == language_cplus) |
94af9270 KS |
10984 | { |
10985 | struct type *type = read_type_die (die, cu); | |
10986 | ||
d7e74731 | 10987 | c_type_print_args (type, &buf, 1, cu->language, |
79d43c61 | 10988 | &type_print_raw_options); |
94af9270 | 10989 | |
9c37b5ae | 10990 | if (cu->language == language_cplus) |
94af9270 | 10991 | { |
60430eff DJ |
10992 | /* Assume that an artificial first parameter is |
10993 | "this", but do not crash if it is not. RealView | |
10994 | marks unnamed (and thus unused) parameters as | |
10995 | artificial; there is no way to differentiate | |
10996 | the two cases. */ | |
94af9270 KS |
10997 | if (TYPE_NFIELDS (type) > 0 |
10998 | && TYPE_FIELD_ARTIFICIAL (type, 0) | |
60430eff | 10999 | && TYPE_CODE (TYPE_FIELD_TYPE (type, 0)) == TYPE_CODE_PTR |
3e43a32a MS |
11000 | && TYPE_CONST (TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (type, |
11001 | 0)))) | |
d7e74731 | 11002 | buf.puts (" const"); |
94af9270 KS |
11003 | } |
11004 | } | |
11005 | ||
d7e74731 | 11006 | const std::string &intermediate_name = buf.string (); |
94af9270 KS |
11007 | |
11008 | if (cu->language == language_cplus) | |
34a68019 | 11009 | canonical_name |
322a8516 | 11010 | = dwarf2_canonicalize_name (intermediate_name.c_str (), cu, |
34a68019 TT |
11011 | &objfile->per_bfd->storage_obstack); |
11012 | ||
11013 | /* If we only computed INTERMEDIATE_NAME, or if | |
11014 | INTERMEDIATE_NAME is already canonical, then we need to | |
11015 | copy it to the appropriate obstack. */ | |
322a8516 | 11016 | if (canonical_name == NULL || canonical_name == intermediate_name.c_str ()) |
224c3ddb SM |
11017 | name = ((const char *) |
11018 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
322a8516 PA |
11019 | intermediate_name.c_str (), |
11020 | intermediate_name.length ())); | |
34a68019 TT |
11021 | else |
11022 | name = canonical_name; | |
94af9270 KS |
11023 | } |
11024 | } | |
11025 | ||
11026 | return name; | |
11027 | } | |
11028 | ||
0114d602 DJ |
11029 | /* Return the fully qualified name of DIE, based on its DW_AT_name. |
11030 | If scope qualifiers are appropriate they will be added. The result | |
34a68019 | 11031 | will be allocated on the storage_obstack, or NULL if the DIE does |
94af9270 KS |
11032 | not have a name. NAME may either be from a previous call to |
11033 | dwarf2_name or NULL. | |
11034 | ||
9c37b5ae | 11035 | The output string will be canonicalized (if C++). */ |
0114d602 DJ |
11036 | |
11037 | static const char * | |
15d034d0 | 11038 | dwarf2_full_name (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
0114d602 | 11039 | { |
94af9270 KS |
11040 | return dwarf2_compute_name (name, die, cu, 0); |
11041 | } | |
0114d602 | 11042 | |
94af9270 KS |
11043 | /* Construct a physname for the given DIE in CU. NAME may either be |
11044 | from a previous call to dwarf2_name or NULL. The result will be | |
11045 | allocated on the objfile_objstack or NULL if the DIE does not have a | |
11046 | name. | |
0114d602 | 11047 | |
9c37b5ae | 11048 | The output string will be canonicalized (if C++). */ |
0114d602 | 11049 | |
94af9270 | 11050 | static const char * |
15d034d0 | 11051 | dwarf2_physname (const char *name, struct die_info *die, struct dwarf2_cu *cu) |
94af9270 | 11052 | { |
518817b3 | 11053 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
900e11f9 | 11054 | const char *retval, *mangled = NULL, *canon = NULL; |
900e11f9 JK |
11055 | int need_copy = 1; |
11056 | ||
11057 | /* In this case dwarf2_compute_name is just a shortcut not building anything | |
11058 | on its own. */ | |
11059 | if (!die_needs_namespace (die, cu)) | |
11060 | return dwarf2_compute_name (name, die, cu, 1); | |
11061 | ||
73b9be8b | 11062 | mangled = dw2_linkage_name (die, cu); |
900e11f9 | 11063 | |
e98c9e7c TT |
11064 | /* rustc emits invalid values for DW_AT_linkage_name. Ignore these. |
11065 | See https://github.com/rust-lang/rust/issues/32925. */ | |
11066 | if (cu->language == language_rust && mangled != NULL | |
11067 | && strchr (mangled, '{') != NULL) | |
11068 | mangled = NULL; | |
11069 | ||
900e11f9 JK |
11070 | /* DW_AT_linkage_name is missing in some cases - depend on what GDB |
11071 | has computed. */ | |
791afaa2 | 11072 | gdb::unique_xmalloc_ptr<char> demangled; |
7d45c7c3 | 11073 | if (mangled != NULL) |
900e11f9 | 11074 | { |
900e11f9 | 11075 | |
59cc4834 JB |
11076 | if (language_def (cu->language)->la_store_sym_names_in_linkage_form_p) |
11077 | { | |
11078 | /* Do nothing (do not demangle the symbol name). */ | |
11079 | } | |
11080 | else if (cu->language == language_go) | |
a766d390 | 11081 | { |
5e2db402 TT |
11082 | /* This is a lie, but we already lie to the caller new_symbol. |
11083 | new_symbol assumes we return the mangled name. | |
a766d390 | 11084 | This just undoes that lie until things are cleaned up. */ |
a766d390 DE |
11085 | } |
11086 | else | |
11087 | { | |
0eb876f5 JB |
11088 | /* Use DMGL_RET_DROP for C++ template functions to suppress |
11089 | their return type. It is easier for GDB users to search | |
11090 | for such functions as `name(params)' than `long name(params)'. | |
11091 | In such case the minimal symbol names do not match the full | |
11092 | symbol names but for template functions there is never a need | |
11093 | to look up their definition from their declaration so | |
11094 | the only disadvantage remains the minimal symbol variant | |
11095 | `long name(params)' does not have the proper inferior type. */ | |
791afaa2 TT |
11096 | demangled.reset (gdb_demangle (mangled, |
11097 | (DMGL_PARAMS | DMGL_ANSI | |
11098 | | DMGL_RET_DROP))); | |
a766d390 | 11099 | } |
900e11f9 | 11100 | if (demangled) |
791afaa2 | 11101 | canon = demangled.get (); |
900e11f9 JK |
11102 | else |
11103 | { | |
11104 | canon = mangled; | |
11105 | need_copy = 0; | |
11106 | } | |
11107 | } | |
11108 | ||
11109 | if (canon == NULL || check_physname) | |
11110 | { | |
11111 | const char *physname = dwarf2_compute_name (name, die, cu, 1); | |
11112 | ||
11113 | if (canon != NULL && strcmp (physname, canon) != 0) | |
11114 | { | |
11115 | /* It may not mean a bug in GDB. The compiler could also | |
11116 | compute DW_AT_linkage_name incorrectly. But in such case | |
11117 | GDB would need to be bug-to-bug compatible. */ | |
11118 | ||
b98664d3 | 11119 | complaint (_("Computed physname <%s> does not match demangled <%s> " |
9d8780f0 SM |
11120 | "(from linkage <%s>) - DIE at %s [in module %s]"), |
11121 | physname, canon, mangled, sect_offset_str (die->sect_off), | |
4262abfb | 11122 | objfile_name (objfile)); |
900e11f9 JK |
11123 | |
11124 | /* Prefer DW_AT_linkage_name (in the CANON form) - when it | |
11125 | is available here - over computed PHYSNAME. It is safer | |
11126 | against both buggy GDB and buggy compilers. */ | |
11127 | ||
11128 | retval = canon; | |
11129 | } | |
11130 | else | |
11131 | { | |
11132 | retval = physname; | |
11133 | need_copy = 0; | |
11134 | } | |
11135 | } | |
11136 | else | |
11137 | retval = canon; | |
11138 | ||
11139 | if (need_copy) | |
224c3ddb SM |
11140 | retval = ((const char *) |
11141 | obstack_copy0 (&objfile->per_bfd->storage_obstack, | |
11142 | retval, strlen (retval))); | |
900e11f9 | 11143 | |
900e11f9 | 11144 | return retval; |
0114d602 DJ |
11145 | } |
11146 | ||
74921315 KS |
11147 | /* Inspect DIE in CU for a namespace alias. If one exists, record |
11148 | a new symbol for it. | |
11149 | ||
11150 | Returns 1 if a namespace alias was recorded, 0 otherwise. */ | |
11151 | ||
11152 | static int | |
11153 | read_namespace_alias (struct die_info *die, struct dwarf2_cu *cu) | |
11154 | { | |
11155 | struct attribute *attr; | |
11156 | ||
11157 | /* If the die does not have a name, this is not a namespace | |
11158 | alias. */ | |
11159 | attr = dwarf2_attr (die, DW_AT_name, cu); | |
11160 | if (attr != NULL) | |
11161 | { | |
11162 | int num; | |
11163 | struct die_info *d = die; | |
11164 | struct dwarf2_cu *imported_cu = cu; | |
11165 | ||
11166 | /* If the compiler has nested DW_AT_imported_declaration DIEs, | |
11167 | keep inspecting DIEs until we hit the underlying import. */ | |
11168 | #define MAX_NESTED_IMPORTED_DECLARATIONS 100 | |
11169 | for (num = 0; num < MAX_NESTED_IMPORTED_DECLARATIONS; ++num) | |
11170 | { | |
11171 | attr = dwarf2_attr (d, DW_AT_import, cu); | |
11172 | if (attr == NULL) | |
11173 | break; | |
11174 | ||
11175 | d = follow_die_ref (d, attr, &imported_cu); | |
11176 | if (d->tag != DW_TAG_imported_declaration) | |
11177 | break; | |
11178 | } | |
11179 | ||
11180 | if (num == MAX_NESTED_IMPORTED_DECLARATIONS) | |
11181 | { | |
b98664d3 | 11182 | complaint (_("DIE at %s has too many recursively imported " |
9d8780f0 | 11183 | "declarations"), sect_offset_str (d->sect_off)); |
74921315 KS |
11184 | return 0; |
11185 | } | |
11186 | ||
11187 | if (attr != NULL) | |
11188 | { | |
11189 | struct type *type; | |
9c541725 | 11190 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
74921315 | 11191 | |
9c541725 | 11192 | type = get_die_type_at_offset (sect_off, cu->per_cu); |
74921315 KS |
11193 | if (type != NULL && TYPE_CODE (type) == TYPE_CODE_NAMESPACE) |
11194 | { | |
11195 | /* This declaration is a global namespace alias. Add | |
11196 | a symbol for it whose type is the aliased namespace. */ | |
11197 | new_symbol (die, type, cu); | |
11198 | return 1; | |
11199 | } | |
11200 | } | |
11201 | } | |
11202 | ||
11203 | return 0; | |
11204 | } | |
11205 | ||
22cee43f | 11206 | /* Return the using directives repository (global or local?) to use in the |
804d2729 | 11207 | current context for CU. |
22cee43f PMR |
11208 | |
11209 | For Ada, imported declarations can materialize renamings, which *may* be | |
11210 | global. However it is impossible (for now?) in DWARF to distinguish | |
11211 | "external" imported declarations and "static" ones. As all imported | |
11212 | declarations seem to be static in all other languages, make them all CU-wide | |
11213 | global only in Ada. */ | |
11214 | ||
11215 | static struct using_direct ** | |
804d2729 | 11216 | using_directives (struct dwarf2_cu *cu) |
22cee43f | 11217 | { |
c24bdb02 KS |
11218 | if (cu->language == language_ada |
11219 | && cu->get_builder ()->outermost_context_p ()) | |
11220 | return cu->get_builder ()->get_global_using_directives (); | |
22cee43f | 11221 | else |
c24bdb02 | 11222 | return cu->get_builder ()->get_local_using_directives (); |
22cee43f PMR |
11223 | } |
11224 | ||
27aa8d6a SW |
11225 | /* Read the import statement specified by the given die and record it. */ |
11226 | ||
11227 | static void | |
11228 | read_import_statement (struct die_info *die, struct dwarf2_cu *cu) | |
11229 | { | |
518817b3 | 11230 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
27aa8d6a | 11231 | struct attribute *import_attr; |
32019081 | 11232 | struct die_info *imported_die, *child_die; |
de4affc9 | 11233 | struct dwarf2_cu *imported_cu; |
27aa8d6a | 11234 | const char *imported_name; |
794684b6 | 11235 | const char *imported_name_prefix; |
13387711 SW |
11236 | const char *canonical_name; |
11237 | const char *import_alias; | |
11238 | const char *imported_declaration = NULL; | |
794684b6 | 11239 | const char *import_prefix; |
eb1e02fd | 11240 | std::vector<const char *> excludes; |
13387711 | 11241 | |
27aa8d6a SW |
11242 | import_attr = dwarf2_attr (die, DW_AT_import, cu); |
11243 | if (import_attr == NULL) | |
11244 | { | |
b98664d3 | 11245 | complaint (_("Tag '%s' has no DW_AT_import"), |
27aa8d6a SW |
11246 | dwarf_tag_name (die->tag)); |
11247 | return; | |
11248 | } | |
11249 | ||
de4affc9 CC |
11250 | imported_cu = cu; |
11251 | imported_die = follow_die_ref_or_sig (die, import_attr, &imported_cu); | |
11252 | imported_name = dwarf2_name (imported_die, imported_cu); | |
27aa8d6a SW |
11253 | if (imported_name == NULL) |
11254 | { | |
11255 | /* GCC bug: https://bugzilla.redhat.com/show_bug.cgi?id=506524 | |
11256 | ||
11257 | The import in the following code: | |
11258 | namespace A | |
11259 | { | |
11260 | typedef int B; | |
11261 | } | |
11262 | ||
11263 | int main () | |
11264 | { | |
11265 | using A::B; | |
11266 | B b; | |
11267 | return b; | |
11268 | } | |
11269 | ||
11270 | ... | |
11271 | <2><51>: Abbrev Number: 3 (DW_TAG_imported_declaration) | |
11272 | <52> DW_AT_decl_file : 1 | |
11273 | <53> DW_AT_decl_line : 6 | |
11274 | <54> DW_AT_import : <0x75> | |
11275 | <2><58>: Abbrev Number: 4 (DW_TAG_typedef) | |
11276 | <59> DW_AT_name : B | |
11277 | <5b> DW_AT_decl_file : 1 | |
11278 | <5c> DW_AT_decl_line : 2 | |
11279 | <5d> DW_AT_type : <0x6e> | |
11280 | ... | |
11281 | <1><75>: Abbrev Number: 7 (DW_TAG_base_type) | |
11282 | <76> DW_AT_byte_size : 4 | |
11283 | <77> DW_AT_encoding : 5 (signed) | |
11284 | ||
11285 | imports the wrong die ( 0x75 instead of 0x58 ). | |
11286 | This case will be ignored until the gcc bug is fixed. */ | |
11287 | return; | |
11288 | } | |
11289 | ||
82856980 SW |
11290 | /* Figure out the local name after import. */ |
11291 | import_alias = dwarf2_name (die, cu); | |
27aa8d6a | 11292 | |
794684b6 SW |
11293 | /* Figure out where the statement is being imported to. */ |
11294 | import_prefix = determine_prefix (die, cu); | |
11295 | ||
11296 | /* Figure out what the scope of the imported die is and prepend it | |
11297 | to the name of the imported die. */ | |
de4affc9 | 11298 | imported_name_prefix = determine_prefix (imported_die, imported_cu); |
794684b6 | 11299 | |
f55ee35c JK |
11300 | if (imported_die->tag != DW_TAG_namespace |
11301 | && imported_die->tag != DW_TAG_module) | |
794684b6 | 11302 | { |
13387711 SW |
11303 | imported_declaration = imported_name; |
11304 | canonical_name = imported_name_prefix; | |
794684b6 | 11305 | } |
13387711 | 11306 | else if (strlen (imported_name_prefix) > 0) |
12aaed36 | 11307 | canonical_name = obconcat (&objfile->objfile_obstack, |
45280282 IB |
11308 | imported_name_prefix, |
11309 | (cu->language == language_d ? "." : "::"), | |
11310 | imported_name, (char *) NULL); | |
13387711 SW |
11311 | else |
11312 | canonical_name = imported_name; | |
794684b6 | 11313 | |
32019081 JK |
11314 | if (die->tag == DW_TAG_imported_module && cu->language == language_fortran) |
11315 | for (child_die = die->child; child_die && child_die->tag; | |
11316 | child_die = sibling_die (child_die)) | |
11317 | { | |
11318 | /* DWARF-4: A Fortran use statement with a “rename list” may be | |
11319 | represented by an imported module entry with an import attribute | |
11320 | referring to the module and owned entries corresponding to those | |
11321 | entities that are renamed as part of being imported. */ | |
11322 | ||
11323 | if (child_die->tag != DW_TAG_imported_declaration) | |
11324 | { | |
b98664d3 | 11325 | complaint (_("child DW_TAG_imported_declaration expected " |
9d8780f0 SM |
11326 | "- DIE at %s [in module %s]"), |
11327 | sect_offset_str (child_die->sect_off), | |
11328 | objfile_name (objfile)); | |
32019081 JK |
11329 | continue; |
11330 | } | |
11331 | ||
11332 | import_attr = dwarf2_attr (child_die, DW_AT_import, cu); | |
11333 | if (import_attr == NULL) | |
11334 | { | |
b98664d3 | 11335 | complaint (_("Tag '%s' has no DW_AT_import"), |
32019081 JK |
11336 | dwarf_tag_name (child_die->tag)); |
11337 | continue; | |
11338 | } | |
11339 | ||
11340 | imported_cu = cu; | |
11341 | imported_die = follow_die_ref_or_sig (child_die, import_attr, | |
11342 | &imported_cu); | |
11343 | imported_name = dwarf2_name (imported_die, imported_cu); | |
11344 | if (imported_name == NULL) | |
11345 | { | |
b98664d3 | 11346 | complaint (_("child DW_TAG_imported_declaration has unknown " |
9d8780f0 SM |
11347 | "imported name - DIE at %s [in module %s]"), |
11348 | sect_offset_str (child_die->sect_off), | |
11349 | objfile_name (objfile)); | |
32019081 JK |
11350 | continue; |
11351 | } | |
11352 | ||
eb1e02fd | 11353 | excludes.push_back (imported_name); |
32019081 JK |
11354 | |
11355 | process_die (child_die, cu); | |
11356 | } | |
11357 | ||
804d2729 | 11358 | add_using_directive (using_directives (cu), |
22cee43f PMR |
11359 | import_prefix, |
11360 | canonical_name, | |
11361 | import_alias, | |
11362 | imported_declaration, | |
11363 | excludes, | |
11364 | 0, | |
11365 | &objfile->objfile_obstack); | |
27aa8d6a SW |
11366 | } |
11367 | ||
5230b05a WT |
11368 | /* ICC<14 does not output the required DW_AT_declaration on incomplete |
11369 | types, but gives them a size of zero. Starting with version 14, | |
11370 | ICC is compatible with GCC. */ | |
11371 | ||
9068261f | 11372 | static bool |
5230b05a WT |
11373 | producer_is_icc_lt_14 (struct dwarf2_cu *cu) |
11374 | { | |
11375 | if (!cu->checked_producer) | |
11376 | check_producer (cu); | |
11377 | ||
11378 | return cu->producer_is_icc_lt_14; | |
11379 | } | |
11380 | ||
eb77c9df AB |
11381 | /* ICC generates a DW_AT_type for C void functions. This was observed on |
11382 | ICC 14.0.5.212, and appears to be against the DWARF spec (V5 3.3.2) | |
11383 | which says that void functions should not have a DW_AT_type. */ | |
11384 | ||
11385 | static bool | |
11386 | producer_is_icc (struct dwarf2_cu *cu) | |
11387 | { | |
11388 | if (!cu->checked_producer) | |
11389 | check_producer (cu); | |
11390 | ||
11391 | return cu->producer_is_icc; | |
11392 | } | |
11393 | ||
1b80a9fa JK |
11394 | /* Check for possibly missing DW_AT_comp_dir with relative .debug_line |
11395 | directory paths. GCC SVN r127613 (new option -fdebug-prefix-map) fixed | |
11396 | this, it was first present in GCC release 4.3.0. */ | |
11397 | ||
9068261f | 11398 | static bool |
1b80a9fa JK |
11399 | producer_is_gcc_lt_4_3 (struct dwarf2_cu *cu) |
11400 | { | |
11401 | if (!cu->checked_producer) | |
11402 | check_producer (cu); | |
11403 | ||
11404 | return cu->producer_is_gcc_lt_4_3; | |
11405 | } | |
11406 | ||
d721ba37 PA |
11407 | static file_and_directory |
11408 | find_file_and_directory (struct die_info *die, struct dwarf2_cu *cu) | |
9291a0cd | 11409 | { |
d721ba37 PA |
11410 | file_and_directory res; |
11411 | ||
9291a0cd TT |
11412 | /* Find the filename. Do not use dwarf2_name here, since the filename |
11413 | is not a source language identifier. */ | |
d721ba37 PA |
11414 | res.name = dwarf2_string_attr (die, DW_AT_name, cu); |
11415 | res.comp_dir = dwarf2_string_attr (die, DW_AT_comp_dir, cu); | |
9291a0cd | 11416 | |
d721ba37 PA |
11417 | if (res.comp_dir == NULL |
11418 | && producer_is_gcc_lt_4_3 (cu) && res.name != NULL | |
11419 | && IS_ABSOLUTE_PATH (res.name)) | |
9291a0cd | 11420 | { |
d721ba37 PA |
11421 | res.comp_dir_storage = ldirname (res.name); |
11422 | if (!res.comp_dir_storage.empty ()) | |
11423 | res.comp_dir = res.comp_dir_storage.c_str (); | |
9291a0cd | 11424 | } |
d721ba37 | 11425 | if (res.comp_dir != NULL) |
9291a0cd TT |
11426 | { |
11427 | /* Irix 6.2 native cc prepends <machine>.: to the compilation | |
11428 | directory, get rid of it. */ | |
d721ba37 | 11429 | const char *cp = strchr (res.comp_dir, ':'); |
9291a0cd | 11430 | |
d721ba37 PA |
11431 | if (cp && cp != res.comp_dir && cp[-1] == '.' && cp[1] == '/') |
11432 | res.comp_dir = cp + 1; | |
9291a0cd TT |
11433 | } |
11434 | ||
d721ba37 PA |
11435 | if (res.name == NULL) |
11436 | res.name = "<unknown>"; | |
11437 | ||
11438 | return res; | |
9291a0cd TT |
11439 | } |
11440 | ||
f4dc4d17 DE |
11441 | /* Handle DW_AT_stmt_list for a compilation unit. |
11442 | DIE is the DW_TAG_compile_unit die for CU. | |
c3b7b696 YQ |
11443 | COMP_DIR is the compilation directory. LOWPC is passed to |
11444 | dwarf_decode_lines. See dwarf_decode_lines comments about it. */ | |
2ab95328 TT |
11445 | |
11446 | static void | |
11447 | handle_DW_AT_stmt_list (struct die_info *die, struct dwarf2_cu *cu, | |
c3b7b696 | 11448 | const char *comp_dir, CORE_ADDR lowpc) /* ARI: editCase function */ |
2ab95328 | 11449 | { |
518817b3 SM |
11450 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11451 | = cu->per_cu->dwarf2_per_objfile; | |
527f3840 | 11452 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
2ab95328 | 11453 | struct attribute *attr; |
527f3840 JK |
11454 | struct line_header line_header_local; |
11455 | hashval_t line_header_local_hash; | |
527f3840 JK |
11456 | void **slot; |
11457 | int decode_mapping; | |
2ab95328 | 11458 | |
f4dc4d17 DE |
11459 | gdb_assert (! cu->per_cu->is_debug_types); |
11460 | ||
2ab95328 | 11461 | attr = dwarf2_attr (die, DW_AT_stmt_list, cu); |
527f3840 JK |
11462 | if (attr == NULL) |
11463 | return; | |
11464 | ||
9c541725 | 11465 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
527f3840 JK |
11466 | |
11467 | /* The line header hash table is only created if needed (it exists to | |
11468 | prevent redundant reading of the line table for partial_units). | |
11469 | If we're given a partial_unit, we'll need it. If we're given a | |
11470 | compile_unit, then use the line header hash table if it's already | |
11471 | created, but don't create one just yet. */ | |
11472 | ||
11473 | if (dwarf2_per_objfile->line_header_hash == NULL | |
11474 | && die->tag == DW_TAG_partial_unit) | |
2ab95328 | 11475 | { |
527f3840 JK |
11476 | dwarf2_per_objfile->line_header_hash |
11477 | = htab_create_alloc_ex (127, line_header_hash_voidp, | |
11478 | line_header_eq_voidp, | |
11479 | free_line_header_voidp, | |
11480 | &objfile->objfile_obstack, | |
11481 | hashtab_obstack_allocate, | |
11482 | dummy_obstack_deallocate); | |
11483 | } | |
2ab95328 | 11484 | |
9c541725 | 11485 | line_header_local.sect_off = line_offset; |
527f3840 JK |
11486 | line_header_local.offset_in_dwz = cu->per_cu->is_dwz; |
11487 | line_header_local_hash = line_header_hash (&line_header_local); | |
11488 | if (dwarf2_per_objfile->line_header_hash != NULL) | |
11489 | { | |
11490 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11491 | &line_header_local, | |
11492 | line_header_local_hash, NO_INSERT); | |
11493 | ||
11494 | /* For DW_TAG_compile_unit we need info like symtab::linetable which | |
11495 | is not present in *SLOT (since if there is something in *SLOT then | |
11496 | it will be for a partial_unit). */ | |
11497 | if (die->tag == DW_TAG_partial_unit && slot != NULL) | |
dee91e82 | 11498 | { |
527f3840 | 11499 | gdb_assert (*slot != NULL); |
9a3c8263 | 11500 | cu->line_header = (struct line_header *) *slot; |
527f3840 | 11501 | return; |
dee91e82 | 11502 | } |
2ab95328 | 11503 | } |
527f3840 JK |
11504 | |
11505 | /* dwarf_decode_line_header does not yet provide sufficient information. | |
11506 | We always have to call also dwarf_decode_lines for it. */ | |
fff8551c PA |
11507 | line_header_up lh = dwarf_decode_line_header (line_offset, cu); |
11508 | if (lh == NULL) | |
527f3840 | 11509 | return; |
4c8aa72d PA |
11510 | |
11511 | cu->line_header = lh.release (); | |
11512 | cu->line_header_die_owner = die; | |
527f3840 JK |
11513 | |
11514 | if (dwarf2_per_objfile->line_header_hash == NULL) | |
11515 | slot = NULL; | |
11516 | else | |
11517 | { | |
11518 | slot = htab_find_slot_with_hash (dwarf2_per_objfile->line_header_hash, | |
11519 | &line_header_local, | |
11520 | line_header_local_hash, INSERT); | |
11521 | gdb_assert (slot != NULL); | |
11522 | } | |
11523 | if (slot != NULL && *slot == NULL) | |
11524 | { | |
11525 | /* This newly decoded line number information unit will be owned | |
11526 | by line_header_hash hash table. */ | |
11527 | *slot = cu->line_header; | |
4c8aa72d | 11528 | cu->line_header_die_owner = NULL; |
527f3840 JK |
11529 | } |
11530 | else | |
11531 | { | |
11532 | /* We cannot free any current entry in (*slot) as that struct line_header | |
11533 | may be already used by multiple CUs. Create only temporary decoded | |
11534 | line_header for this CU - it may happen at most once for each line | |
11535 | number information unit. And if we're not using line_header_hash | |
11536 | then this is what we want as well. */ | |
11537 | gdb_assert (die->tag != DW_TAG_partial_unit); | |
527f3840 JK |
11538 | } |
11539 | decode_mapping = (die->tag != DW_TAG_partial_unit); | |
11540 | dwarf_decode_lines (cu->line_header, comp_dir, cu, NULL, lowpc, | |
11541 | decode_mapping); | |
fff8551c | 11542 | |
2ab95328 TT |
11543 | } |
11544 | ||
95554aad | 11545 | /* Process DW_TAG_compile_unit or DW_TAG_partial_unit. */ |
ae2de4f8 | 11546 | |
c906108c | 11547 | static void |
e7c27a73 | 11548 | read_file_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 11549 | { |
518817b3 SM |
11550 | struct dwarf2_per_objfile *dwarf2_per_objfile |
11551 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 11552 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 11553 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
2acceee2 | 11554 | CORE_ADDR lowpc = ((CORE_ADDR) -1); |
c906108c SS |
11555 | CORE_ADDR highpc = ((CORE_ADDR) 0); |
11556 | struct attribute *attr; | |
c906108c | 11557 | struct die_info *child_die; |
e142c38c | 11558 | CORE_ADDR baseaddr; |
6e70227d | 11559 | |
380618d6 | 11560 | prepare_one_comp_unit (cu, die, cu->language); |
e142c38c | 11561 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
c906108c | 11562 | |
fae299cd | 11563 | get_scope_pc_bounds (die, &lowpc, &highpc, cu); |
c906108c SS |
11564 | |
11565 | /* If we didn't find a lowpc, set it to highpc to avoid complaints | |
11566 | from finish_block. */ | |
2acceee2 | 11567 | if (lowpc == ((CORE_ADDR) -1)) |
c906108c | 11568 | lowpc = highpc; |
3e29f34a | 11569 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
c906108c | 11570 | |
d721ba37 | 11571 | file_and_directory fnd = find_file_and_directory (die, cu); |
e1024ff1 | 11572 | |
f4b8a18d KW |
11573 | /* The XLCL doesn't generate DW_LANG_OpenCL because this attribute is not |
11574 | standardised yet. As a workaround for the language detection we fall | |
11575 | back to the DW_AT_producer string. */ | |
11576 | if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL") != NULL) | |
11577 | cu->language = language_opencl; | |
11578 | ||
3019eac3 DE |
11579 | /* Similar hack for Go. */ |
11580 | if (cu->producer && strstr (cu->producer, "GNU Go ") != NULL) | |
11581 | set_cu_language (DW_LANG_Go, cu); | |
11582 | ||
c24bdb02 | 11583 | cu->start_symtab (fnd.name, fnd.comp_dir, lowpc); |
3019eac3 DE |
11584 | |
11585 | /* Decode line number information if present. We do this before | |
11586 | processing child DIEs, so that the line header table is available | |
11587 | for DW_AT_decl_file. */ | |
d721ba37 | 11588 | handle_DW_AT_stmt_list (die, cu, fnd.comp_dir, lowpc); |
3019eac3 DE |
11589 | |
11590 | /* Process all dies in compilation unit. */ | |
11591 | if (die->child != NULL) | |
11592 | { | |
11593 | child_die = die->child; | |
11594 | while (child_die && child_die->tag) | |
11595 | { | |
11596 | process_die (child_die, cu); | |
11597 | child_die = sibling_die (child_die); | |
11598 | } | |
11599 | } | |
11600 | ||
11601 | /* Decode macro information, if present. Dwarf 2 macro information | |
11602 | refers to information in the line number info statement program | |
11603 | header, so we can only read it if we've read the header | |
11604 | successfully. */ | |
0af92d60 JK |
11605 | attr = dwarf2_attr (die, DW_AT_macros, cu); |
11606 | if (attr == NULL) | |
11607 | attr = dwarf2_attr (die, DW_AT_GNU_macros, cu); | |
3019eac3 DE |
11608 | if (attr && cu->line_header) |
11609 | { | |
11610 | if (dwarf2_attr (die, DW_AT_macro_info, cu)) | |
b98664d3 | 11611 | complaint (_("CU refers to both DW_AT_macros and DW_AT_macro_info")); |
3019eac3 | 11612 | |
43f3e411 | 11613 | dwarf_decode_macros (cu, DW_UNSND (attr), 1); |
3019eac3 DE |
11614 | } |
11615 | else | |
11616 | { | |
11617 | attr = dwarf2_attr (die, DW_AT_macro_info, cu); | |
11618 | if (attr && cu->line_header) | |
11619 | { | |
11620 | unsigned int macro_offset = DW_UNSND (attr); | |
11621 | ||
43f3e411 | 11622 | dwarf_decode_macros (cu, macro_offset, 0); |
3019eac3 DE |
11623 | } |
11624 | } | |
3019eac3 DE |
11625 | } |
11626 | ||
c24bdb02 KS |
11627 | void |
11628 | dwarf2_cu::setup_type_unit_groups (struct die_info *die) | |
3019eac3 | 11629 | { |
f4dc4d17 DE |
11630 | struct type_unit_group *tu_group; |
11631 | int first_time; | |
3019eac3 | 11632 | struct attribute *attr; |
9c541725 | 11633 | unsigned int i; |
0186c6a7 | 11634 | struct signatured_type *sig_type; |
3019eac3 | 11635 | |
f4dc4d17 | 11636 | gdb_assert (per_cu->is_debug_types); |
0186c6a7 | 11637 | sig_type = (struct signatured_type *) per_cu; |
3019eac3 | 11638 | |
c24bdb02 | 11639 | attr = dwarf2_attr (die, DW_AT_stmt_list, this); |
3019eac3 | 11640 | |
f4dc4d17 | 11641 | /* If we're using .gdb_index (includes -readnow) then |
74e04d1c | 11642 | per_cu->type_unit_group may not have been set up yet. */ |
0186c6a7 | 11643 | if (sig_type->type_unit_group == NULL) |
c24bdb02 | 11644 | sig_type->type_unit_group = get_type_unit_group (this, attr); |
0186c6a7 | 11645 | tu_group = sig_type->type_unit_group; |
f4dc4d17 DE |
11646 | |
11647 | /* If we've already processed this stmt_list there's no real need to | |
11648 | do it again, we could fake it and just recreate the part we need | |
11649 | (file name,index -> symtab mapping). If data shows this optimization | |
11650 | is useful we can do it then. */ | |
43f3e411 | 11651 | first_time = tu_group->compunit_symtab == NULL; |
f4dc4d17 DE |
11652 | |
11653 | /* We have to handle the case of both a missing DW_AT_stmt_list or bad | |
11654 | debug info. */ | |
fff8551c | 11655 | line_header_up lh; |
f4dc4d17 | 11656 | if (attr != NULL) |
3019eac3 | 11657 | { |
9c541725 | 11658 | sect_offset line_offset = (sect_offset) DW_UNSND (attr); |
c24bdb02 | 11659 | lh = dwarf_decode_line_header (line_offset, this); |
f4dc4d17 DE |
11660 | } |
11661 | if (lh == NULL) | |
11662 | { | |
11663 | if (first_time) | |
c24bdb02 | 11664 | start_symtab ("", NULL, 0); |
f4dc4d17 DE |
11665 | else |
11666 | { | |
11667 | gdb_assert (tu_group->symtabs == NULL); | |
c24bdb02 | 11668 | gdb_assert (m_builder == nullptr); |
804d2729 | 11669 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11670 | m_builder.reset (new struct buildsym_compunit |
11671 | (COMPUNIT_OBJFILE (cust), "", | |
11672 | COMPUNIT_DIRNAME (cust), | |
11673 | compunit_language (cust), | |
11674 | 0, cust)); | |
f4dc4d17 | 11675 | } |
f4dc4d17 | 11676 | return; |
3019eac3 DE |
11677 | } |
11678 | ||
c24bdb02 KS |
11679 | line_header = lh.release (); |
11680 | line_header_die_owner = die; | |
3019eac3 | 11681 | |
f4dc4d17 DE |
11682 | if (first_time) |
11683 | { | |
c24bdb02 | 11684 | struct compunit_symtab *cust = start_symtab ("", NULL, 0); |
3019eac3 | 11685 | |
1fd60fc0 DE |
11686 | /* Note: We don't assign tu_group->compunit_symtab yet because we're |
11687 | still initializing it, and our caller (a few levels up) | |
11688 | process_full_type_unit still needs to know if this is the first | |
11689 | time. */ | |
11690 | ||
c24bdb02 | 11691 | tu_group->num_symtabs = line_header->file_names.size (); |
4c8aa72d | 11692 | tu_group->symtabs = XNEWVEC (struct symtab *, |
c24bdb02 | 11693 | line_header->file_names.size ()); |
3019eac3 | 11694 | |
c24bdb02 | 11695 | for (i = 0; i < line_header->file_names.size (); ++i) |
f4dc4d17 | 11696 | { |
c24bdb02 | 11697 | file_entry &fe = line_header->file_names[i]; |
3019eac3 | 11698 | |
c24bdb02 KS |
11699 | dwarf2_start_subfile (this, fe.name, |
11700 | fe.include_dir (line_header)); | |
11701 | buildsym_compunit *b = get_builder (); | |
11702 | if (b->get_current_subfile ()->symtab == NULL) | |
f4dc4d17 | 11703 | { |
4c8aa72d PA |
11704 | /* NOTE: start_subfile will recognize when it's been |
11705 | passed a file it has already seen. So we can't | |
11706 | assume there's a simple mapping from | |
11707 | cu->line_header->file_names to subfiles, plus | |
11708 | cu->line_header->file_names may contain dups. */ | |
c24bdb02 KS |
11709 | b->get_current_subfile ()->symtab |
11710 | = allocate_symtab (cust, b->get_current_subfile ()->name); | |
f4dc4d17 DE |
11711 | } |
11712 | ||
c24bdb02 | 11713 | fe.symtab = b->get_current_subfile ()->symtab; |
8c43009f | 11714 | tu_group->symtabs[i] = fe.symtab; |
f4dc4d17 DE |
11715 | } |
11716 | } | |
11717 | else | |
3019eac3 | 11718 | { |
c24bdb02 | 11719 | gdb_assert (m_builder == nullptr); |
804d2729 | 11720 | struct compunit_symtab *cust = tu_group->compunit_symtab; |
c24bdb02 KS |
11721 | m_builder.reset (new struct buildsym_compunit |
11722 | (COMPUNIT_OBJFILE (cust), "", | |
11723 | COMPUNIT_DIRNAME (cust), | |
11724 | compunit_language (cust), | |
11725 | 0, cust)); | |
f4dc4d17 | 11726 | |
c24bdb02 | 11727 | for (i = 0; i < line_header->file_names.size (); ++i) |
f4dc4d17 | 11728 | { |
c24bdb02 | 11729 | file_entry &fe = line_header->file_names[i]; |
f4dc4d17 | 11730 | |
4c8aa72d | 11731 | fe.symtab = tu_group->symtabs[i]; |
f4dc4d17 | 11732 | } |
3019eac3 DE |
11733 | } |
11734 | ||
f4dc4d17 DE |
11735 | /* The main symtab is allocated last. Type units don't have DW_AT_name |
11736 | so they don't have a "real" (so to speak) symtab anyway. | |
11737 | There is later code that will assign the main symtab to all symbols | |
11738 | that don't have one. We need to handle the case of a symbol with a | |
11739 | missing symtab (DW_AT_decl_file) anyway. */ | |
11740 | } | |
3019eac3 | 11741 | |
f4dc4d17 DE |
11742 | /* Process DW_TAG_type_unit. |
11743 | For TUs we want to skip the first top level sibling if it's not the | |
11744 | actual type being defined by this TU. In this case the first top | |
11745 | level sibling is there to provide context only. */ | |
3019eac3 | 11746 | |
f4dc4d17 DE |
11747 | static void |
11748 | read_type_unit_scope (struct die_info *die, struct dwarf2_cu *cu) | |
11749 | { | |
11750 | struct die_info *child_die; | |
3019eac3 | 11751 | |
f4dc4d17 DE |
11752 | prepare_one_comp_unit (cu, die, language_minimal); |
11753 | ||
11754 | /* Initialize (or reinitialize) the machinery for building symtabs. | |
11755 | We do this before processing child DIEs, so that the line header table | |
11756 | is available for DW_AT_decl_file. */ | |
c24bdb02 | 11757 | cu->setup_type_unit_groups (die); |
f4dc4d17 DE |
11758 | |
11759 | if (die->child != NULL) | |
11760 | { | |
11761 | child_die = die->child; | |
11762 | while (child_die && child_die->tag) | |
11763 | { | |
11764 | process_die (child_die, cu); | |
11765 | child_die = sibling_die (child_die); | |
11766 | } | |
11767 | } | |
3019eac3 DE |
11768 | } |
11769 | \f | |
80626a55 DE |
11770 | /* DWO/DWP files. |
11771 | ||
11772 | http://gcc.gnu.org/wiki/DebugFission | |
11773 | http://gcc.gnu.org/wiki/DebugFissionDWP | |
11774 | ||
11775 | To simplify handling of both DWO files ("object" files with the DWARF info) | |
11776 | and DWP files (a file with the DWOs packaged up into one file), we treat | |
11777 | DWP files as having a collection of virtual DWO files. */ | |
3019eac3 DE |
11778 | |
11779 | static hashval_t | |
11780 | hash_dwo_file (const void *item) | |
11781 | { | |
9a3c8263 | 11782 | const struct dwo_file *dwo_file = (const struct dwo_file *) item; |
a2ce51a0 | 11783 | hashval_t hash; |
3019eac3 | 11784 | |
a2ce51a0 DE |
11785 | hash = htab_hash_string (dwo_file->dwo_name); |
11786 | if (dwo_file->comp_dir != NULL) | |
11787 | hash += htab_hash_string (dwo_file->comp_dir); | |
11788 | return hash; | |
3019eac3 DE |
11789 | } |
11790 | ||
11791 | static int | |
11792 | eq_dwo_file (const void *item_lhs, const void *item_rhs) | |
11793 | { | |
9a3c8263 SM |
11794 | const struct dwo_file *lhs = (const struct dwo_file *) item_lhs; |
11795 | const struct dwo_file *rhs = (const struct dwo_file *) item_rhs; | |
3019eac3 | 11796 | |
a2ce51a0 DE |
11797 | if (strcmp (lhs->dwo_name, rhs->dwo_name) != 0) |
11798 | return 0; | |
11799 | if (lhs->comp_dir == NULL || rhs->comp_dir == NULL) | |
11800 | return lhs->comp_dir == rhs->comp_dir; | |
11801 | return strcmp (lhs->comp_dir, rhs->comp_dir) == 0; | |
3019eac3 DE |
11802 | } |
11803 | ||
11804 | /* Allocate a hash table for DWO files. */ | |
11805 | ||
11806 | static htab_t | |
ed2dc618 | 11807 | allocate_dwo_file_hash_table (struct objfile *objfile) |
3019eac3 | 11808 | { |
3019eac3 DE |
11809 | return htab_create_alloc_ex (41, |
11810 | hash_dwo_file, | |
11811 | eq_dwo_file, | |
11812 | NULL, | |
11813 | &objfile->objfile_obstack, | |
11814 | hashtab_obstack_allocate, | |
11815 | dummy_obstack_deallocate); | |
11816 | } | |
11817 | ||
80626a55 DE |
11818 | /* Lookup DWO file DWO_NAME. */ |
11819 | ||
11820 | static void ** | |
ed2dc618 SM |
11821 | lookup_dwo_file_slot (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11822 | const char *dwo_name, | |
11823 | const char *comp_dir) | |
80626a55 DE |
11824 | { |
11825 | struct dwo_file find_entry; | |
11826 | void **slot; | |
11827 | ||
11828 | if (dwarf2_per_objfile->dwo_files == NULL) | |
ed2dc618 SM |
11829 | dwarf2_per_objfile->dwo_files |
11830 | = allocate_dwo_file_hash_table (dwarf2_per_objfile->objfile); | |
80626a55 DE |
11831 | |
11832 | memset (&find_entry, 0, sizeof (find_entry)); | |
0ac5b59e DE |
11833 | find_entry.dwo_name = dwo_name; |
11834 | find_entry.comp_dir = comp_dir; | |
80626a55 DE |
11835 | slot = htab_find_slot (dwarf2_per_objfile->dwo_files, &find_entry, INSERT); |
11836 | ||
11837 | return slot; | |
11838 | } | |
11839 | ||
3019eac3 DE |
11840 | static hashval_t |
11841 | hash_dwo_unit (const void *item) | |
11842 | { | |
9a3c8263 | 11843 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 DE |
11844 | |
11845 | /* This drops the top 32 bits of the id, but is ok for a hash. */ | |
11846 | return dwo_unit->signature; | |
11847 | } | |
11848 | ||
11849 | static int | |
11850 | eq_dwo_unit (const void *item_lhs, const void *item_rhs) | |
11851 | { | |
9a3c8263 SM |
11852 | const struct dwo_unit *lhs = (const struct dwo_unit *) item_lhs; |
11853 | const struct dwo_unit *rhs = (const struct dwo_unit *) item_rhs; | |
3019eac3 DE |
11854 | |
11855 | /* The signature is assumed to be unique within the DWO file. | |
11856 | So while object file CU dwo_id's always have the value zero, | |
11857 | that's OK, assuming each object file DWO file has only one CU, | |
11858 | and that's the rule for now. */ | |
11859 | return lhs->signature == rhs->signature; | |
11860 | } | |
11861 | ||
11862 | /* Allocate a hash table for DWO CUs,TUs. | |
11863 | There is one of these tables for each of CUs,TUs for each DWO file. */ | |
11864 | ||
11865 | static htab_t | |
11866 | allocate_dwo_unit_table (struct objfile *objfile) | |
11867 | { | |
11868 | /* Start out with a pretty small number. | |
11869 | Generally DWO files contain only one CU and maybe some TUs. */ | |
11870 | return htab_create_alloc_ex (3, | |
11871 | hash_dwo_unit, | |
11872 | eq_dwo_unit, | |
11873 | NULL, | |
11874 | &objfile->objfile_obstack, | |
11875 | hashtab_obstack_allocate, | |
11876 | dummy_obstack_deallocate); | |
11877 | } | |
11878 | ||
80626a55 | 11879 | /* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */ |
3019eac3 | 11880 | |
19c3d4c9 | 11881 | struct create_dwo_cu_data |
3019eac3 DE |
11882 | { |
11883 | struct dwo_file *dwo_file; | |
19c3d4c9 | 11884 | struct dwo_unit dwo_unit; |
3019eac3 DE |
11885 | }; |
11886 | ||
19c3d4c9 | 11887 | /* die_reader_func for create_dwo_cu. */ |
3019eac3 DE |
11888 | |
11889 | static void | |
19c3d4c9 DE |
11890 | create_dwo_cu_reader (const struct die_reader_specs *reader, |
11891 | const gdb_byte *info_ptr, | |
11892 | struct die_info *comp_unit_die, | |
11893 | int has_children, | |
11894 | void *datap) | |
3019eac3 DE |
11895 | { |
11896 | struct dwarf2_cu *cu = reader->cu; | |
9c541725 | 11897 | sect_offset sect_off = cu->per_cu->sect_off; |
8a0459fd | 11898 | struct dwarf2_section_info *section = cu->per_cu->section; |
9a3c8263 | 11899 | struct create_dwo_cu_data *data = (struct create_dwo_cu_data *) datap; |
3019eac3 | 11900 | struct dwo_file *dwo_file = data->dwo_file; |
19c3d4c9 | 11901 | struct dwo_unit *dwo_unit = &data->dwo_unit; |
3019eac3 | 11902 | struct attribute *attr; |
3019eac3 DE |
11903 | |
11904 | attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu); | |
11905 | if (attr == NULL) | |
11906 | { | |
b98664d3 | 11907 | complaint (_("Dwarf Error: debug entry at offset %s is missing" |
19c3d4c9 | 11908 | " its dwo_id [in module %s]"), |
9d8780f0 | 11909 | sect_offset_str (sect_off), dwo_file->dwo_name); |
3019eac3 DE |
11910 | return; |
11911 | } | |
11912 | ||
3019eac3 DE |
11913 | dwo_unit->dwo_file = dwo_file; |
11914 | dwo_unit->signature = DW_UNSND (attr); | |
8a0459fd | 11915 | dwo_unit->section = section; |
9c541725 | 11916 | dwo_unit->sect_off = sect_off; |
3019eac3 DE |
11917 | dwo_unit->length = cu->per_cu->length; |
11918 | ||
b4f54984 | 11919 | if (dwarf_read_debug) |
9d8780f0 SM |
11920 | fprintf_unfiltered (gdb_stdlog, " offset %s, dwo_id %s\n", |
11921 | sect_offset_str (sect_off), | |
9c541725 | 11922 | hex_string (dwo_unit->signature)); |
3019eac3 DE |
11923 | } |
11924 | ||
33c5cd75 | 11925 | /* Create the dwo_units for the CUs in a DWO_FILE. |
19c3d4c9 | 11926 | Note: This function processes DWO files only, not DWP files. */ |
3019eac3 | 11927 | |
33c5cd75 | 11928 | static void |
ed2dc618 SM |
11929 | create_cus_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
11930 | struct dwo_file &dwo_file, dwarf2_section_info §ion, | |
33c5cd75 | 11931 | htab_t &cus_htab) |
3019eac3 DE |
11932 | { |
11933 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
d521ce57 | 11934 | const gdb_byte *info_ptr, *end_ptr; |
3019eac3 | 11935 | |
33c5cd75 DB |
11936 | dwarf2_read_section (objfile, §ion); |
11937 | info_ptr = section.buffer; | |
3019eac3 DE |
11938 | |
11939 | if (info_ptr == NULL) | |
33c5cd75 | 11940 | return; |
3019eac3 | 11941 | |
b4f54984 | 11942 | if (dwarf_read_debug) |
19c3d4c9 DE |
11943 | { |
11944 | fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n", | |
33c5cd75 DB |
11945 | get_section_name (§ion), |
11946 | get_section_file_name (§ion)); | |
19c3d4c9 | 11947 | } |
3019eac3 | 11948 | |
33c5cd75 | 11949 | end_ptr = info_ptr + section.size; |
3019eac3 DE |
11950 | while (info_ptr < end_ptr) |
11951 | { | |
11952 | struct dwarf2_per_cu_data per_cu; | |
33c5cd75 DB |
11953 | struct create_dwo_cu_data create_dwo_cu_data; |
11954 | struct dwo_unit *dwo_unit; | |
11955 | void **slot; | |
11956 | sect_offset sect_off = (sect_offset) (info_ptr - section.buffer); | |
3019eac3 | 11957 | |
19c3d4c9 DE |
11958 | memset (&create_dwo_cu_data.dwo_unit, 0, |
11959 | sizeof (create_dwo_cu_data.dwo_unit)); | |
3019eac3 | 11960 | memset (&per_cu, 0, sizeof (per_cu)); |
e3b94546 | 11961 | per_cu.dwarf2_per_objfile = dwarf2_per_objfile; |
3019eac3 | 11962 | per_cu.is_debug_types = 0; |
33c5cd75 DB |
11963 | per_cu.sect_off = sect_offset (info_ptr - section.buffer); |
11964 | per_cu.section = §ion; | |
c5ed0576 | 11965 | create_dwo_cu_data.dwo_file = &dwo_file; |
33c5cd75 DB |
11966 | |
11967 | init_cutu_and_read_dies_no_follow ( | |
11968 | &per_cu, &dwo_file, create_dwo_cu_reader, &create_dwo_cu_data); | |
11969 | info_ptr += per_cu.length; | |
11970 | ||
11971 | // If the unit could not be parsed, skip it. | |
11972 | if (create_dwo_cu_data.dwo_unit.dwo_file == NULL) | |
11973 | continue; | |
3019eac3 | 11974 | |
33c5cd75 DB |
11975 | if (cus_htab == NULL) |
11976 | cus_htab = allocate_dwo_unit_table (objfile); | |
19c3d4c9 | 11977 | |
33c5cd75 DB |
11978 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); |
11979 | *dwo_unit = create_dwo_cu_data.dwo_unit; | |
11980 | slot = htab_find_slot (cus_htab, dwo_unit, INSERT); | |
11981 | gdb_assert (slot != NULL); | |
11982 | if (*slot != NULL) | |
19c3d4c9 | 11983 | { |
33c5cd75 DB |
11984 | const struct dwo_unit *dup_cu = (const struct dwo_unit *)*slot; |
11985 | sect_offset dup_sect_off = dup_cu->sect_off; | |
19c3d4c9 | 11986 | |
b98664d3 | 11987 | complaint (_("debug cu entry at offset %s is duplicate to" |
9d8780f0 SM |
11988 | " the entry at offset %s, signature %s"), |
11989 | sect_offset_str (sect_off), sect_offset_str (dup_sect_off), | |
33c5cd75 | 11990 | hex_string (dwo_unit->signature)); |
19c3d4c9 | 11991 | } |
33c5cd75 | 11992 | *slot = (void *)dwo_unit; |
3019eac3 | 11993 | } |
3019eac3 DE |
11994 | } |
11995 | ||
80626a55 DE |
11996 | /* DWP file .debug_{cu,tu}_index section format: |
11997 | [ref: http://gcc.gnu.org/wiki/DebugFissionDWP] | |
11998 | ||
d2415c6c DE |
11999 | DWP Version 1: |
12000 | ||
80626a55 DE |
12001 | Both index sections have the same format, and serve to map a 64-bit |
12002 | signature to a set of section numbers. Each section begins with a header, | |
12003 | followed by a hash table of 64-bit signatures, a parallel table of 32-bit | |
12004 | indexes, and a pool of 32-bit section numbers. The index sections will be | |
12005 | aligned at 8-byte boundaries in the file. | |
12006 | ||
d2415c6c DE |
12007 | The index section header consists of: |
12008 | ||
12009 | V, 32 bit version number | |
12010 | -, 32 bits unused | |
12011 | N, 32 bit number of compilation units or type units in the index | |
12012 | M, 32 bit number of slots in the hash table | |
80626a55 | 12013 | |
d2415c6c | 12014 | Numbers are recorded using the byte order of the application binary. |
80626a55 | 12015 | |
d2415c6c DE |
12016 | The hash table begins at offset 16 in the section, and consists of an array |
12017 | of M 64-bit slots. Each slot contains a 64-bit signature (using the byte | |
12018 | order of the application binary). Unused slots in the hash table are 0. | |
12019 | (We rely on the extreme unlikeliness of a signature being exactly 0.) | |
80626a55 | 12020 | |
d2415c6c DE |
12021 | The parallel table begins immediately after the hash table |
12022 | (at offset 16 + 8 * M from the beginning of the section), and consists of an | |
12023 | array of 32-bit indexes (using the byte order of the application binary), | |
12024 | corresponding 1-1 with slots in the hash table. Each entry in the parallel | |
12025 | table contains a 32-bit index into the pool of section numbers. For unused | |
12026 | hash table slots, the corresponding entry in the parallel table will be 0. | |
80626a55 | 12027 | |
73869dc2 DE |
12028 | The pool of section numbers begins immediately following the hash table |
12029 | (at offset 16 + 12 * M from the beginning of the section). The pool of | |
12030 | section numbers consists of an array of 32-bit words (using the byte order | |
12031 | of the application binary). Each item in the array is indexed starting | |
12032 | from 0. The hash table entry provides the index of the first section | |
12033 | number in the set. Additional section numbers in the set follow, and the | |
12034 | set is terminated by a 0 entry (section number 0 is not used in ELF). | |
12035 | ||
12036 | In each set of section numbers, the .debug_info.dwo or .debug_types.dwo | |
12037 | section must be the first entry in the set, and the .debug_abbrev.dwo must | |
12038 | be the second entry. Other members of the set may follow in any order. | |
12039 | ||
12040 | --- | |
12041 | ||
12042 | DWP Version 2: | |
12043 | ||
12044 | DWP Version 2 combines all the .debug_info, etc. sections into one, | |
12045 | and the entries in the index tables are now offsets into these sections. | |
12046 | CU offsets begin at 0. TU offsets begin at the size of the .debug_info | |
12047 | section. | |
12048 | ||
12049 | Index Section Contents: | |
12050 | Header | |
12051 | Hash Table of Signatures dwp_hash_table.hash_table | |
12052 | Parallel Table of Indices dwp_hash_table.unit_table | |
12053 | Table of Section Offsets dwp_hash_table.v2.{section_ids,offsets} | |
12054 | Table of Section Sizes dwp_hash_table.v2.sizes | |
12055 | ||
12056 | The index section header consists of: | |
12057 | ||
12058 | V, 32 bit version number | |
12059 | L, 32 bit number of columns in the table of section offsets | |
12060 | N, 32 bit number of compilation units or type units in the index | |
12061 | M, 32 bit number of slots in the hash table | |
12062 | ||
12063 | Numbers are recorded using the byte order of the application binary. | |
12064 | ||
12065 | The hash table has the same format as version 1. | |
12066 | The parallel table of indices has the same format as version 1, | |
12067 | except that the entries are origin-1 indices into the table of sections | |
12068 | offsets and the table of section sizes. | |
12069 | ||
12070 | The table of offsets begins immediately following the parallel table | |
12071 | (at offset 16 + 12 * M from the beginning of the section). The table is | |
12072 | a two-dimensional array of 32-bit words (using the byte order of the | |
12073 | application binary), with L columns and N+1 rows, in row-major order. | |
12074 | Each row in the array is indexed starting from 0. The first row provides | |
12075 | a key to the remaining rows: each column in this row provides an identifier | |
12076 | for a debug section, and the offsets in the same column of subsequent rows | |
12077 | refer to that section. The section identifiers are: | |
12078 | ||
12079 | DW_SECT_INFO 1 .debug_info.dwo | |
12080 | DW_SECT_TYPES 2 .debug_types.dwo | |
12081 | DW_SECT_ABBREV 3 .debug_abbrev.dwo | |
12082 | DW_SECT_LINE 4 .debug_line.dwo | |
12083 | DW_SECT_LOC 5 .debug_loc.dwo | |
12084 | DW_SECT_STR_OFFSETS 6 .debug_str_offsets.dwo | |
12085 | DW_SECT_MACINFO 7 .debug_macinfo.dwo | |
12086 | DW_SECT_MACRO 8 .debug_macro.dwo | |
12087 | ||
12088 | The offsets provided by the CU and TU index sections are the base offsets | |
12089 | for the contributions made by each CU or TU to the corresponding section | |
12090 | in the package file. Each CU and TU header contains an abbrev_offset | |
12091 | field, used to find the abbreviations table for that CU or TU within the | |
12092 | contribution to the .debug_abbrev.dwo section for that CU or TU, and should | |
12093 | be interpreted as relative to the base offset given in the index section. | |
12094 | Likewise, offsets into .debug_line.dwo from DW_AT_stmt_list attributes | |
12095 | should be interpreted as relative to the base offset for .debug_line.dwo, | |
12096 | and offsets into other debug sections obtained from DWARF attributes should | |
12097 | also be interpreted as relative to the corresponding base offset. | |
12098 | ||
12099 | The table of sizes begins immediately following the table of offsets. | |
12100 | Like the table of offsets, it is a two-dimensional array of 32-bit words, | |
12101 | with L columns and N rows, in row-major order. Each row in the array is | |
12102 | indexed starting from 1 (row 0 is shared by the two tables). | |
12103 | ||
12104 | --- | |
12105 | ||
12106 | Hash table lookup is handled the same in version 1 and 2: | |
12107 | ||
12108 | We assume that N and M will not exceed 2^32 - 1. | |
12109 | The size of the hash table, M, must be 2^k such that 2^k > 3*N/2. | |
12110 | ||
d2415c6c DE |
12111 | Given a 64-bit compilation unit signature or a type signature S, an entry |
12112 | in the hash table is located as follows: | |
80626a55 | 12113 | |
d2415c6c DE |
12114 | 1) Calculate a primary hash H = S & MASK(k), where MASK(k) is a mask with |
12115 | the low-order k bits all set to 1. | |
80626a55 | 12116 | |
d2415c6c | 12117 | 2) Calculate a secondary hash H' = (((S >> 32) & MASK(k)) | 1). |
80626a55 | 12118 | |
d2415c6c DE |
12119 | 3) If the hash table entry at index H matches the signature, use that |
12120 | entry. If the hash table entry at index H is unused (all zeroes), | |
12121 | terminate the search: the signature is not present in the table. | |
80626a55 | 12122 | |
d2415c6c | 12123 | 4) Let H = (H + H') modulo M. Repeat at Step 3. |
80626a55 | 12124 | |
d2415c6c | 12125 | Because M > N and H' and M are relatively prime, the search is guaranteed |
73869dc2 | 12126 | to stop at an unused slot or find the match. */ |
80626a55 DE |
12127 | |
12128 | /* Create a hash table to map DWO IDs to their CU/TU entry in | |
12129 | .debug_{info,types}.dwo in DWP_FILE. | |
12130 | Returns NULL if there isn't one. | |
12131 | Note: This function processes DWP files only, not DWO files. */ | |
12132 | ||
12133 | static struct dwp_hash_table * | |
ed2dc618 SM |
12134 | create_dwp_hash_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12135 | struct dwp_file *dwp_file, int is_debug_types) | |
80626a55 DE |
12136 | { |
12137 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
400174b1 | 12138 | bfd *dbfd = dwp_file->dbfd.get (); |
948f8e3d | 12139 | const gdb_byte *index_ptr, *index_end; |
80626a55 | 12140 | struct dwarf2_section_info *index; |
73869dc2 | 12141 | uint32_t version, nr_columns, nr_units, nr_slots; |
80626a55 DE |
12142 | struct dwp_hash_table *htab; |
12143 | ||
12144 | if (is_debug_types) | |
12145 | index = &dwp_file->sections.tu_index; | |
12146 | else | |
12147 | index = &dwp_file->sections.cu_index; | |
12148 | ||
12149 | if (dwarf2_section_empty_p (index)) | |
12150 | return NULL; | |
12151 | dwarf2_read_section (objfile, index); | |
12152 | ||
12153 | index_ptr = index->buffer; | |
12154 | index_end = index_ptr + index->size; | |
12155 | ||
12156 | version = read_4_bytes (dbfd, index_ptr); | |
73869dc2 DE |
12157 | index_ptr += 4; |
12158 | if (version == 2) | |
12159 | nr_columns = read_4_bytes (dbfd, index_ptr); | |
12160 | else | |
12161 | nr_columns = 0; | |
12162 | index_ptr += 4; | |
80626a55 DE |
12163 | nr_units = read_4_bytes (dbfd, index_ptr); |
12164 | index_ptr += 4; | |
12165 | nr_slots = read_4_bytes (dbfd, index_ptr); | |
12166 | index_ptr += 4; | |
12167 | ||
73869dc2 | 12168 | if (version != 1 && version != 2) |
80626a55 | 12169 | { |
21aa081e | 12170 | error (_("Dwarf Error: unsupported DWP file version (%s)" |
80626a55 | 12171 | " [in module %s]"), |
21aa081e | 12172 | pulongest (version), dwp_file->name); |
80626a55 DE |
12173 | } |
12174 | if (nr_slots != (nr_slots & -nr_slots)) | |
12175 | { | |
21aa081e | 12176 | error (_("Dwarf Error: number of slots in DWP hash table (%s)" |
80626a55 | 12177 | " is not power of 2 [in module %s]"), |
21aa081e | 12178 | pulongest (nr_slots), dwp_file->name); |
80626a55 DE |
12179 | } |
12180 | ||
12181 | htab = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwp_hash_table); | |
73869dc2 DE |
12182 | htab->version = version; |
12183 | htab->nr_columns = nr_columns; | |
80626a55 DE |
12184 | htab->nr_units = nr_units; |
12185 | htab->nr_slots = nr_slots; | |
12186 | htab->hash_table = index_ptr; | |
12187 | htab->unit_table = htab->hash_table + sizeof (uint64_t) * nr_slots; | |
73869dc2 DE |
12188 | |
12189 | /* Exit early if the table is empty. */ | |
12190 | if (nr_slots == 0 || nr_units == 0 | |
12191 | || (version == 2 && nr_columns == 0)) | |
12192 | { | |
12193 | /* All must be zero. */ | |
12194 | if (nr_slots != 0 || nr_units != 0 | |
12195 | || (version == 2 && nr_columns != 0)) | |
12196 | { | |
b98664d3 | 12197 | complaint (_("Empty DWP but nr_slots,nr_units,nr_columns not" |
73869dc2 DE |
12198 | " all zero [in modules %s]"), |
12199 | dwp_file->name); | |
12200 | } | |
12201 | return htab; | |
12202 | } | |
12203 | ||
12204 | if (version == 1) | |
12205 | { | |
12206 | htab->section_pool.v1.indices = | |
12207 | htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12208 | /* It's harder to decide whether the section is too small in v1. | |
12209 | V1 is deprecated anyway so we punt. */ | |
12210 | } | |
12211 | else | |
12212 | { | |
12213 | const gdb_byte *ids_ptr = htab->unit_table + sizeof (uint32_t) * nr_slots; | |
12214 | int *ids = htab->section_pool.v2.section_ids; | |
04fd5eed | 12215 | size_t sizeof_ids = sizeof (htab->section_pool.v2.section_ids); |
73869dc2 DE |
12216 | /* Reverse map for error checking. */ |
12217 | int ids_seen[DW_SECT_MAX + 1]; | |
12218 | int i; | |
12219 | ||
12220 | if (nr_columns < 2) | |
12221 | { | |
12222 | error (_("Dwarf Error: bad DWP hash table, too few columns" | |
12223 | " in section table [in module %s]"), | |
12224 | dwp_file->name); | |
12225 | } | |
12226 | if (nr_columns > MAX_NR_V2_DWO_SECTIONS) | |
12227 | { | |
12228 | error (_("Dwarf Error: bad DWP hash table, too many columns" | |
12229 | " in section table [in module %s]"), | |
12230 | dwp_file->name); | |
12231 | } | |
04fd5eed GB |
12232 | memset (ids, 255, sizeof_ids); |
12233 | memset (ids_seen, 255, sizeof (ids_seen)); | |
73869dc2 DE |
12234 | for (i = 0; i < nr_columns; ++i) |
12235 | { | |
12236 | int id = read_4_bytes (dbfd, ids_ptr + i * sizeof (uint32_t)); | |
12237 | ||
12238 | if (id < DW_SECT_MIN || id > DW_SECT_MAX) | |
12239 | { | |
12240 | error (_("Dwarf Error: bad DWP hash table, bad section id %d" | |
12241 | " in section table [in module %s]"), | |
12242 | id, dwp_file->name); | |
12243 | } | |
12244 | if (ids_seen[id] != -1) | |
12245 | { | |
12246 | error (_("Dwarf Error: bad DWP hash table, duplicate section" | |
12247 | " id %d in section table [in module %s]"), | |
12248 | id, dwp_file->name); | |
12249 | } | |
12250 | ids_seen[id] = i; | |
12251 | ids[i] = id; | |
12252 | } | |
12253 | /* Must have exactly one info or types section. */ | |
12254 | if (((ids_seen[DW_SECT_INFO] != -1) | |
12255 | + (ids_seen[DW_SECT_TYPES] != -1)) | |
12256 | != 1) | |
12257 | { | |
12258 | error (_("Dwarf Error: bad DWP hash table, missing/duplicate" | |
12259 | " DWO info/types section [in module %s]"), | |
12260 | dwp_file->name); | |
12261 | } | |
12262 | /* Must have an abbrev section. */ | |
12263 | if (ids_seen[DW_SECT_ABBREV] == -1) | |
12264 | { | |
12265 | error (_("Dwarf Error: bad DWP hash table, missing DWO abbrev" | |
12266 | " section [in module %s]"), | |
12267 | dwp_file->name); | |
12268 | } | |
12269 | htab->section_pool.v2.offsets = ids_ptr + sizeof (uint32_t) * nr_columns; | |
12270 | htab->section_pool.v2.sizes = | |
12271 | htab->section_pool.v2.offsets + (sizeof (uint32_t) | |
12272 | * nr_units * nr_columns); | |
12273 | if ((htab->section_pool.v2.sizes + (sizeof (uint32_t) | |
12274 | * nr_units * nr_columns)) | |
12275 | > index_end) | |
12276 | { | |
12277 | error (_("Dwarf Error: DWP index section is corrupt (too small)" | |
12278 | " [in module %s]"), | |
12279 | dwp_file->name); | |
12280 | } | |
12281 | } | |
80626a55 DE |
12282 | |
12283 | return htab; | |
12284 | } | |
12285 | ||
12286 | /* Update SECTIONS with the data from SECTP. | |
12287 | ||
12288 | This function is like the other "locate" section routines that are | |
12289 | passed to bfd_map_over_sections, but in this context the sections to | |
73869dc2 | 12290 | read comes from the DWP V1 hash table, not the full ELF section table. |
80626a55 DE |
12291 | |
12292 | The result is non-zero for success, or zero if an error was found. */ | |
12293 | ||
12294 | static int | |
73869dc2 DE |
12295 | locate_v1_virtual_dwo_sections (asection *sectp, |
12296 | struct virtual_v1_dwo_sections *sections) | |
80626a55 DE |
12297 | { |
12298 | const struct dwop_section_names *names = &dwop_section_names; | |
12299 | ||
12300 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12301 | { | |
12302 | /* There can be only one. */ | |
049412e3 | 12303 | if (sections->abbrev.s.section != NULL) |
80626a55 | 12304 | return 0; |
049412e3 | 12305 | sections->abbrev.s.section = sectp; |
80626a55 DE |
12306 | sections->abbrev.size = bfd_get_section_size (sectp); |
12307 | } | |
12308 | else if (section_is_p (sectp->name, &names->info_dwo) | |
12309 | || section_is_p (sectp->name, &names->types_dwo)) | |
12310 | { | |
12311 | /* There can be only one. */ | |
049412e3 | 12312 | if (sections->info_or_types.s.section != NULL) |
80626a55 | 12313 | return 0; |
049412e3 | 12314 | sections->info_or_types.s.section = sectp; |
80626a55 DE |
12315 | sections->info_or_types.size = bfd_get_section_size (sectp); |
12316 | } | |
12317 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12318 | { | |
12319 | /* There can be only one. */ | |
049412e3 | 12320 | if (sections->line.s.section != NULL) |
80626a55 | 12321 | return 0; |
049412e3 | 12322 | sections->line.s.section = sectp; |
80626a55 DE |
12323 | sections->line.size = bfd_get_section_size (sectp); |
12324 | } | |
12325 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12326 | { | |
12327 | /* There can be only one. */ | |
049412e3 | 12328 | if (sections->loc.s.section != NULL) |
80626a55 | 12329 | return 0; |
049412e3 | 12330 | sections->loc.s.section = sectp; |
80626a55 DE |
12331 | sections->loc.size = bfd_get_section_size (sectp); |
12332 | } | |
12333 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12334 | { | |
12335 | /* There can be only one. */ | |
049412e3 | 12336 | if (sections->macinfo.s.section != NULL) |
80626a55 | 12337 | return 0; |
049412e3 | 12338 | sections->macinfo.s.section = sectp; |
80626a55 DE |
12339 | sections->macinfo.size = bfd_get_section_size (sectp); |
12340 | } | |
12341 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12342 | { | |
12343 | /* There can be only one. */ | |
049412e3 | 12344 | if (sections->macro.s.section != NULL) |
80626a55 | 12345 | return 0; |
049412e3 | 12346 | sections->macro.s.section = sectp; |
80626a55 DE |
12347 | sections->macro.size = bfd_get_section_size (sectp); |
12348 | } | |
12349 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12350 | { | |
12351 | /* There can be only one. */ | |
049412e3 | 12352 | if (sections->str_offsets.s.section != NULL) |
80626a55 | 12353 | return 0; |
049412e3 | 12354 | sections->str_offsets.s.section = sectp; |
80626a55 DE |
12355 | sections->str_offsets.size = bfd_get_section_size (sectp); |
12356 | } | |
12357 | else | |
12358 | { | |
12359 | /* No other kind of section is valid. */ | |
12360 | return 0; | |
12361 | } | |
12362 | ||
12363 | return 1; | |
12364 | } | |
12365 | ||
73869dc2 DE |
12366 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. |
12367 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12368 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12369 | This is for DWP version 1 files. */ | |
80626a55 DE |
12370 | |
12371 | static struct dwo_unit * | |
ed2dc618 SM |
12372 | create_dwo_unit_in_dwp_v1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12373 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12374 | uint32_t unit_index, |
12375 | const char *comp_dir, | |
12376 | ULONGEST signature, int is_debug_types) | |
80626a55 DE |
12377 | { |
12378 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
73869dc2 DE |
12379 | const struct dwp_hash_table *dwp_htab = |
12380 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12381 | bfd *dbfd = dwp_file->dbfd.get (); |
80626a55 DE |
12382 | const char *kind = is_debug_types ? "TU" : "CU"; |
12383 | struct dwo_file *dwo_file; | |
12384 | struct dwo_unit *dwo_unit; | |
73869dc2 | 12385 | struct virtual_v1_dwo_sections sections; |
80626a55 | 12386 | void **dwo_file_slot; |
80626a55 DE |
12387 | int i; |
12388 | ||
73869dc2 DE |
12389 | gdb_assert (dwp_file->version == 1); |
12390 | ||
b4f54984 | 12391 | if (dwarf_read_debug) |
80626a55 | 12392 | { |
73869dc2 | 12393 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V1 file: %s\n", |
80626a55 | 12394 | kind, |
73869dc2 | 12395 | pulongest (unit_index), hex_string (signature), |
80626a55 DE |
12396 | dwp_file->name); |
12397 | } | |
12398 | ||
19ac8c2e | 12399 | /* Fetch the sections of this DWO unit. |
80626a55 DE |
12400 | Put a limit on the number of sections we look for so that bad data |
12401 | doesn't cause us to loop forever. */ | |
12402 | ||
73869dc2 | 12403 | #define MAX_NR_V1_DWO_SECTIONS \ |
80626a55 DE |
12404 | (1 /* .debug_info or .debug_types */ \ |
12405 | + 1 /* .debug_abbrev */ \ | |
12406 | + 1 /* .debug_line */ \ | |
12407 | + 1 /* .debug_loc */ \ | |
12408 | + 1 /* .debug_str_offsets */ \ | |
19ac8c2e | 12409 | + 1 /* .debug_macro or .debug_macinfo */ \ |
80626a55 DE |
12410 | + 1 /* trailing zero */) |
12411 | ||
12412 | memset (§ions, 0, sizeof (sections)); | |
80626a55 | 12413 | |
73869dc2 | 12414 | for (i = 0; i < MAX_NR_V1_DWO_SECTIONS; ++i) |
80626a55 DE |
12415 | { |
12416 | asection *sectp; | |
12417 | uint32_t section_nr = | |
12418 | read_4_bytes (dbfd, | |
73869dc2 DE |
12419 | dwp_htab->section_pool.v1.indices |
12420 | + (unit_index + i) * sizeof (uint32_t)); | |
80626a55 DE |
12421 | |
12422 | if (section_nr == 0) | |
12423 | break; | |
12424 | if (section_nr >= dwp_file->num_sections) | |
12425 | { | |
12426 | error (_("Dwarf Error: bad DWP hash table, section number too large" | |
12427 | " [in module %s]"), | |
12428 | dwp_file->name); | |
12429 | } | |
12430 | ||
12431 | sectp = dwp_file->elf_sections[section_nr]; | |
73869dc2 | 12432 | if (! locate_v1_virtual_dwo_sections (sectp, §ions)) |
80626a55 DE |
12433 | { |
12434 | error (_("Dwarf Error: bad DWP hash table, invalid section found" | |
12435 | " [in module %s]"), | |
12436 | dwp_file->name); | |
12437 | } | |
12438 | } | |
12439 | ||
12440 | if (i < 2 | |
a32a8923 DE |
12441 | || dwarf2_section_empty_p (§ions.info_or_types) |
12442 | || dwarf2_section_empty_p (§ions.abbrev)) | |
80626a55 DE |
12443 | { |
12444 | error (_("Dwarf Error: bad DWP hash table, missing DWO sections" | |
12445 | " [in module %s]"), | |
12446 | dwp_file->name); | |
12447 | } | |
73869dc2 | 12448 | if (i == MAX_NR_V1_DWO_SECTIONS) |
80626a55 DE |
12449 | { |
12450 | error (_("Dwarf Error: bad DWP hash table, too many DWO sections" | |
12451 | " [in module %s]"), | |
12452 | dwp_file->name); | |
12453 | } | |
12454 | ||
12455 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12456 | have dwo_unit "live" in that. At least for now. | |
12457 | ||
12458 | The DWP file can be made up of a random collection of CUs and TUs. | |
c766f7ec | 12459 | However, for each CU + set of TUs that came from the same original DWO |
57d63ce2 DE |
12460 | file, we can combine them back into a virtual DWO file to save space |
12461 | (fewer struct dwo_file objects to allocate). Remember that for really | |
80626a55 DE |
12462 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ |
12463 | ||
791afaa2 TT |
12464 | std::string virtual_dwo_name = |
12465 | string_printf ("virtual-dwo/%d-%d-%d-%d", | |
12466 | get_section_id (§ions.abbrev), | |
12467 | get_section_id (§ions.line), | |
12468 | get_section_id (§ions.loc), | |
12469 | get_section_id (§ions.str_offsets)); | |
80626a55 | 12470 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12471 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12472 | virtual_dwo_name.c_str (), | |
12473 | comp_dir); | |
80626a55 DE |
12474 | /* Create one if necessary. */ |
12475 | if (*dwo_file_slot == NULL) | |
12476 | { | |
b4f54984 | 12477 | if (dwarf_read_debug) |
80626a55 DE |
12478 | { |
12479 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12480 | virtual_dwo_name.c_str ()); |
80626a55 DE |
12481 | } |
12482 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12483 | dwo_file->dwo_name |
12484 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12485 | virtual_dwo_name.c_str (), |
12486 | virtual_dwo_name.size ()); | |
0ac5b59e | 12487 | dwo_file->comp_dir = comp_dir; |
80626a55 DE |
12488 | dwo_file->sections.abbrev = sections.abbrev; |
12489 | dwo_file->sections.line = sections.line; | |
12490 | dwo_file->sections.loc = sections.loc; | |
12491 | dwo_file->sections.macinfo = sections.macinfo; | |
12492 | dwo_file->sections.macro = sections.macro; | |
12493 | dwo_file->sections.str_offsets = sections.str_offsets; | |
12494 | /* The "str" section is global to the entire DWP file. */ | |
12495 | dwo_file->sections.str = dwp_file->sections.str; | |
57d63ce2 | 12496 | /* The info or types section is assigned below to dwo_unit, |
80626a55 DE |
12497 | there's no need to record it in dwo_file. |
12498 | Also, we can't simply record type sections in dwo_file because | |
12499 | we record a pointer into the vector in dwo_unit. As we collect more | |
12500 | types we'll grow the vector and eventually have to reallocate space | |
57d63ce2 DE |
12501 | for it, invalidating all copies of pointers into the previous |
12502 | contents. */ | |
80626a55 DE |
12503 | *dwo_file_slot = dwo_file; |
12504 | } | |
12505 | else | |
12506 | { | |
b4f54984 | 12507 | if (dwarf_read_debug) |
80626a55 DE |
12508 | { |
12509 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12510 | virtual_dwo_name.c_str ()); |
80626a55 | 12511 | } |
9a3c8263 | 12512 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
80626a55 | 12513 | } |
80626a55 DE |
12514 | |
12515 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12516 | dwo_unit->dwo_file = dwo_file; | |
12517 | dwo_unit->signature = signature; | |
8d749320 SM |
12518 | dwo_unit->section = |
12519 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
8a0459fd | 12520 | *dwo_unit->section = sections.info_or_types; |
57d63ce2 | 12521 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ |
80626a55 DE |
12522 | |
12523 | return dwo_unit; | |
12524 | } | |
12525 | ||
73869dc2 DE |
12526 | /* Subroutine of create_dwo_unit_in_dwp_v2 to simplify it. |
12527 | Given a pointer to the containing section SECTION, and OFFSET,SIZE of the | |
12528 | piece within that section used by a TU/CU, return a virtual section | |
12529 | of just that piece. */ | |
12530 | ||
12531 | static struct dwarf2_section_info | |
ed2dc618 SM |
12532 | create_dwp_v2_section (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12533 | struct dwarf2_section_info *section, | |
73869dc2 DE |
12534 | bfd_size_type offset, bfd_size_type size) |
12535 | { | |
12536 | struct dwarf2_section_info result; | |
12537 | asection *sectp; | |
12538 | ||
12539 | gdb_assert (section != NULL); | |
12540 | gdb_assert (!section->is_virtual); | |
12541 | ||
12542 | memset (&result, 0, sizeof (result)); | |
12543 | result.s.containing_section = section; | |
12544 | result.is_virtual = 1; | |
12545 | ||
12546 | if (size == 0) | |
12547 | return result; | |
12548 | ||
12549 | sectp = get_section_bfd_section (section); | |
12550 | ||
12551 | /* Flag an error if the piece denoted by OFFSET,SIZE is outside the | |
12552 | bounds of the real section. This is a pretty-rare event, so just | |
12553 | flag an error (easier) instead of a warning and trying to cope. */ | |
12554 | if (sectp == NULL | |
12555 | || offset + size > bfd_get_section_size (sectp)) | |
12556 | { | |
73869dc2 DE |
12557 | error (_("Dwarf Error: Bad DWP V2 section info, doesn't fit" |
12558 | " in section %s [in module %s]"), | |
12559 | sectp ? bfd_section_name (abfd, sectp) : "<unknown>", | |
12560 | objfile_name (dwarf2_per_objfile->objfile)); | |
12561 | } | |
12562 | ||
12563 | result.virtual_offset = offset; | |
12564 | result.size = size; | |
12565 | return result; | |
12566 | } | |
12567 | ||
12568 | /* Create a dwo_unit object for the DWO unit with signature SIGNATURE. | |
12569 | UNIT_INDEX is the index of the DWO unit in the DWP hash table. | |
12570 | COMP_DIR is the DW_AT_comp_dir attribute of the referencing CU. | |
12571 | This is for DWP version 2 files. */ | |
12572 | ||
12573 | static struct dwo_unit * | |
ed2dc618 SM |
12574 | create_dwo_unit_in_dwp_v2 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12575 | struct dwp_file *dwp_file, | |
73869dc2 DE |
12576 | uint32_t unit_index, |
12577 | const char *comp_dir, | |
12578 | ULONGEST signature, int is_debug_types) | |
12579 | { | |
12580 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
12581 | const struct dwp_hash_table *dwp_htab = | |
12582 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12583 | bfd *dbfd = dwp_file->dbfd.get (); |
73869dc2 DE |
12584 | const char *kind = is_debug_types ? "TU" : "CU"; |
12585 | struct dwo_file *dwo_file; | |
12586 | struct dwo_unit *dwo_unit; | |
12587 | struct virtual_v2_dwo_sections sections; | |
12588 | void **dwo_file_slot; | |
73869dc2 DE |
12589 | int i; |
12590 | ||
12591 | gdb_assert (dwp_file->version == 2); | |
12592 | ||
b4f54984 | 12593 | if (dwarf_read_debug) |
73869dc2 DE |
12594 | { |
12595 | fprintf_unfiltered (gdb_stdlog, "Reading %s %s/%s in DWP V2 file: %s\n", | |
12596 | kind, | |
12597 | pulongest (unit_index), hex_string (signature), | |
12598 | dwp_file->name); | |
12599 | } | |
12600 | ||
12601 | /* Fetch the section offsets of this DWO unit. */ | |
12602 | ||
12603 | memset (§ions, 0, sizeof (sections)); | |
73869dc2 DE |
12604 | |
12605 | for (i = 0; i < dwp_htab->nr_columns; ++i) | |
12606 | { | |
12607 | uint32_t offset = read_4_bytes (dbfd, | |
12608 | dwp_htab->section_pool.v2.offsets | |
12609 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12610 | + i) | |
12611 | * sizeof (uint32_t))); | |
12612 | uint32_t size = read_4_bytes (dbfd, | |
12613 | dwp_htab->section_pool.v2.sizes | |
12614 | + (((unit_index - 1) * dwp_htab->nr_columns | |
12615 | + i) | |
12616 | * sizeof (uint32_t))); | |
12617 | ||
12618 | switch (dwp_htab->section_pool.v2.section_ids[i]) | |
12619 | { | |
12620 | case DW_SECT_INFO: | |
12621 | case DW_SECT_TYPES: | |
12622 | sections.info_or_types_offset = offset; | |
12623 | sections.info_or_types_size = size; | |
12624 | break; | |
12625 | case DW_SECT_ABBREV: | |
12626 | sections.abbrev_offset = offset; | |
12627 | sections.abbrev_size = size; | |
12628 | break; | |
12629 | case DW_SECT_LINE: | |
12630 | sections.line_offset = offset; | |
12631 | sections.line_size = size; | |
12632 | break; | |
12633 | case DW_SECT_LOC: | |
12634 | sections.loc_offset = offset; | |
12635 | sections.loc_size = size; | |
12636 | break; | |
12637 | case DW_SECT_STR_OFFSETS: | |
12638 | sections.str_offsets_offset = offset; | |
12639 | sections.str_offsets_size = size; | |
12640 | break; | |
12641 | case DW_SECT_MACINFO: | |
12642 | sections.macinfo_offset = offset; | |
12643 | sections.macinfo_size = size; | |
12644 | break; | |
12645 | case DW_SECT_MACRO: | |
12646 | sections.macro_offset = offset; | |
12647 | sections.macro_size = size; | |
12648 | break; | |
12649 | } | |
12650 | } | |
12651 | ||
12652 | /* It's easier for the rest of the code if we fake a struct dwo_file and | |
12653 | have dwo_unit "live" in that. At least for now. | |
12654 | ||
12655 | The DWP file can be made up of a random collection of CUs and TUs. | |
12656 | However, for each CU + set of TUs that came from the same original DWO | |
12657 | file, we can combine them back into a virtual DWO file to save space | |
12658 | (fewer struct dwo_file objects to allocate). Remember that for really | |
12659 | large apps there can be on the order of 8K CUs and 200K TUs, or more. */ | |
12660 | ||
791afaa2 TT |
12661 | std::string virtual_dwo_name = |
12662 | string_printf ("virtual-dwo/%ld-%ld-%ld-%ld", | |
12663 | (long) (sections.abbrev_size ? sections.abbrev_offset : 0), | |
12664 | (long) (sections.line_size ? sections.line_offset : 0), | |
12665 | (long) (sections.loc_size ? sections.loc_offset : 0), | |
12666 | (long) (sections.str_offsets_size | |
12667 | ? sections.str_offsets_offset : 0)); | |
73869dc2 | 12668 | /* Can we use an existing virtual DWO file? */ |
ed2dc618 SM |
12669 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
12670 | virtual_dwo_name.c_str (), | |
12671 | comp_dir); | |
73869dc2 DE |
12672 | /* Create one if necessary. */ |
12673 | if (*dwo_file_slot == NULL) | |
12674 | { | |
b4f54984 | 12675 | if (dwarf_read_debug) |
73869dc2 DE |
12676 | { |
12677 | fprintf_unfiltered (gdb_stdlog, "Creating virtual DWO: %s\n", | |
791afaa2 | 12678 | virtual_dwo_name.c_str ()); |
73869dc2 DE |
12679 | } |
12680 | dwo_file = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_file); | |
224c3ddb SM |
12681 | dwo_file->dwo_name |
12682 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, | |
791afaa2 TT |
12683 | virtual_dwo_name.c_str (), |
12684 | virtual_dwo_name.size ()); | |
73869dc2 DE |
12685 | dwo_file->comp_dir = comp_dir; |
12686 | dwo_file->sections.abbrev = | |
ed2dc618 | 12687 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.abbrev, |
73869dc2 DE |
12688 | sections.abbrev_offset, sections.abbrev_size); |
12689 | dwo_file->sections.line = | |
ed2dc618 | 12690 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.line, |
73869dc2 DE |
12691 | sections.line_offset, sections.line_size); |
12692 | dwo_file->sections.loc = | |
ed2dc618 | 12693 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.loc, |
73869dc2 DE |
12694 | sections.loc_offset, sections.loc_size); |
12695 | dwo_file->sections.macinfo = | |
ed2dc618 | 12696 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macinfo, |
73869dc2 DE |
12697 | sections.macinfo_offset, sections.macinfo_size); |
12698 | dwo_file->sections.macro = | |
ed2dc618 | 12699 | create_dwp_v2_section (dwarf2_per_objfile, &dwp_file->sections.macro, |
73869dc2 DE |
12700 | sections.macro_offset, sections.macro_size); |
12701 | dwo_file->sections.str_offsets = | |
ed2dc618 SM |
12702 | create_dwp_v2_section (dwarf2_per_objfile, |
12703 | &dwp_file->sections.str_offsets, | |
73869dc2 DE |
12704 | sections.str_offsets_offset, |
12705 | sections.str_offsets_size); | |
12706 | /* The "str" section is global to the entire DWP file. */ | |
12707 | dwo_file->sections.str = dwp_file->sections.str; | |
12708 | /* The info or types section is assigned below to dwo_unit, | |
12709 | there's no need to record it in dwo_file. | |
12710 | Also, we can't simply record type sections in dwo_file because | |
12711 | we record a pointer into the vector in dwo_unit. As we collect more | |
12712 | types we'll grow the vector and eventually have to reallocate space | |
12713 | for it, invalidating all copies of pointers into the previous | |
12714 | contents. */ | |
12715 | *dwo_file_slot = dwo_file; | |
12716 | } | |
12717 | else | |
12718 | { | |
b4f54984 | 12719 | if (dwarf_read_debug) |
73869dc2 DE |
12720 | { |
12721 | fprintf_unfiltered (gdb_stdlog, "Using existing virtual DWO: %s\n", | |
791afaa2 | 12722 | virtual_dwo_name.c_str ()); |
73869dc2 | 12723 | } |
9a3c8263 | 12724 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
73869dc2 | 12725 | } |
73869dc2 DE |
12726 | |
12727 | dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit); | |
12728 | dwo_unit->dwo_file = dwo_file; | |
12729 | dwo_unit->signature = signature; | |
8d749320 SM |
12730 | dwo_unit->section = |
12731 | XOBNEW (&objfile->objfile_obstack, struct dwarf2_section_info); | |
ed2dc618 SM |
12732 | *dwo_unit->section = create_dwp_v2_section (dwarf2_per_objfile, |
12733 | is_debug_types | |
73869dc2 DE |
12734 | ? &dwp_file->sections.types |
12735 | : &dwp_file->sections.info, | |
12736 | sections.info_or_types_offset, | |
12737 | sections.info_or_types_size); | |
12738 | /* dwo_unit->{offset,length,type_offset_in_tu} are set later. */ | |
12739 | ||
12740 | return dwo_unit; | |
12741 | } | |
12742 | ||
57d63ce2 DE |
12743 | /* Lookup the DWO unit with SIGNATURE in DWP_FILE. |
12744 | Returns NULL if the signature isn't found. */ | |
80626a55 DE |
12745 | |
12746 | static struct dwo_unit * | |
ed2dc618 SM |
12747 | lookup_dwo_unit_in_dwp (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12748 | struct dwp_file *dwp_file, const char *comp_dir, | |
57d63ce2 | 12749 | ULONGEST signature, int is_debug_types) |
80626a55 | 12750 | { |
57d63ce2 DE |
12751 | const struct dwp_hash_table *dwp_htab = |
12752 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
400174b1 | 12753 | bfd *dbfd = dwp_file->dbfd.get (); |
57d63ce2 | 12754 | uint32_t mask = dwp_htab->nr_slots - 1; |
80626a55 DE |
12755 | uint32_t hash = signature & mask; |
12756 | uint32_t hash2 = ((signature >> 32) & mask) | 1; | |
12757 | unsigned int i; | |
12758 | void **slot; | |
870f88f7 | 12759 | struct dwo_unit find_dwo_cu; |
80626a55 DE |
12760 | |
12761 | memset (&find_dwo_cu, 0, sizeof (find_dwo_cu)); | |
12762 | find_dwo_cu.signature = signature; | |
19ac8c2e DE |
12763 | slot = htab_find_slot (is_debug_types |
12764 | ? dwp_file->loaded_tus | |
12765 | : dwp_file->loaded_cus, | |
12766 | &find_dwo_cu, INSERT); | |
80626a55 DE |
12767 | |
12768 | if (*slot != NULL) | |
9a3c8263 | 12769 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12770 | |
12771 | /* Use a for loop so that we don't loop forever on bad debug info. */ | |
57d63ce2 | 12772 | for (i = 0; i < dwp_htab->nr_slots; ++i) |
80626a55 DE |
12773 | { |
12774 | ULONGEST signature_in_table; | |
12775 | ||
12776 | signature_in_table = | |
57d63ce2 | 12777 | read_8_bytes (dbfd, dwp_htab->hash_table + hash * sizeof (uint64_t)); |
80626a55 DE |
12778 | if (signature_in_table == signature) |
12779 | { | |
57d63ce2 DE |
12780 | uint32_t unit_index = |
12781 | read_4_bytes (dbfd, | |
12782 | dwp_htab->unit_table + hash * sizeof (uint32_t)); | |
80626a55 | 12783 | |
73869dc2 DE |
12784 | if (dwp_file->version == 1) |
12785 | { | |
ed2dc618 SM |
12786 | *slot = create_dwo_unit_in_dwp_v1 (dwarf2_per_objfile, |
12787 | dwp_file, unit_index, | |
73869dc2 DE |
12788 | comp_dir, signature, |
12789 | is_debug_types); | |
12790 | } | |
12791 | else | |
12792 | { | |
ed2dc618 SM |
12793 | *slot = create_dwo_unit_in_dwp_v2 (dwarf2_per_objfile, |
12794 | dwp_file, unit_index, | |
73869dc2 DE |
12795 | comp_dir, signature, |
12796 | is_debug_types); | |
12797 | } | |
9a3c8263 | 12798 | return (struct dwo_unit *) *slot; |
80626a55 DE |
12799 | } |
12800 | if (signature_in_table == 0) | |
12801 | return NULL; | |
12802 | hash = (hash + hash2) & mask; | |
12803 | } | |
12804 | ||
12805 | error (_("Dwarf Error: bad DWP hash table, lookup didn't terminate" | |
12806 | " [in module %s]"), | |
12807 | dwp_file->name); | |
12808 | } | |
12809 | ||
ab5088bf | 12810 | /* Subroutine of open_dwo_file,open_dwp_file to simplify them. |
3019eac3 DE |
12811 | Open the file specified by FILE_NAME and hand it off to BFD for |
12812 | preliminary analysis. Return a newly initialized bfd *, which | |
12813 | includes a canonicalized copy of FILE_NAME. | |
80626a55 | 12814 | If IS_DWP is TRUE, we're opening a DWP file, otherwise a DWO file. |
6ac97d4c DE |
12815 | SEARCH_CWD is true if the current directory is to be searched. |
12816 | It will be searched before debug-file-directory. | |
13aaf454 DE |
12817 | If successful, the file is added to the bfd include table of the |
12818 | objfile's bfd (see gdb_bfd_record_inclusion). | |
6ac97d4c | 12819 | If unable to find/open the file, return NULL. |
3019eac3 DE |
12820 | NOTE: This function is derived from symfile_bfd_open. */ |
12821 | ||
192b62ce | 12822 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12823 | try_open_dwop_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12824 | const char *file_name, int is_dwp, int search_cwd) | |
3019eac3 | 12825 | { |
24b9144d | 12826 | int desc; |
9c02c129 DE |
12827 | /* Blech. OPF_TRY_CWD_FIRST also disables searching the path list if |
12828 | FILE_NAME contains a '/'. So we can't use it. Instead prepend "." | |
12829 | to debug_file_directory. */ | |
e0cc99a6 | 12830 | const char *search_path; |
9c02c129 DE |
12831 | static const char dirname_separator_string[] = { DIRNAME_SEPARATOR, '\0' }; |
12832 | ||
e0cc99a6 | 12833 | gdb::unique_xmalloc_ptr<char> search_path_holder; |
6ac97d4c DE |
12834 | if (search_cwd) |
12835 | { | |
12836 | if (*debug_file_directory != '\0') | |
e0cc99a6 TT |
12837 | { |
12838 | search_path_holder.reset (concat (".", dirname_separator_string, | |
12839 | debug_file_directory, | |
12840 | (char *) NULL)); | |
12841 | search_path = search_path_holder.get (); | |
12842 | } | |
6ac97d4c | 12843 | else |
e0cc99a6 | 12844 | search_path = "."; |
6ac97d4c | 12845 | } |
9c02c129 | 12846 | else |
e0cc99a6 | 12847 | search_path = debug_file_directory; |
3019eac3 | 12848 | |
24b9144d | 12849 | openp_flags flags = OPF_RETURN_REALPATH; |
80626a55 DE |
12850 | if (is_dwp) |
12851 | flags |= OPF_SEARCH_IN_PATH; | |
e0cc99a6 TT |
12852 | |
12853 | gdb::unique_xmalloc_ptr<char> absolute_name; | |
9c02c129 | 12854 | desc = openp (search_path, flags, file_name, |
3019eac3 DE |
12855 | O_RDONLY | O_BINARY, &absolute_name); |
12856 | if (desc < 0) | |
12857 | return NULL; | |
12858 | ||
e0cc99a6 TT |
12859 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (absolute_name.get (), |
12860 | gnutarget, desc)); | |
9c02c129 DE |
12861 | if (sym_bfd == NULL) |
12862 | return NULL; | |
192b62ce | 12863 | bfd_set_cacheable (sym_bfd.get (), 1); |
3019eac3 | 12864 | |
192b62ce TT |
12865 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
12866 | return NULL; | |
3019eac3 | 12867 | |
13aaf454 DE |
12868 | /* Success. Record the bfd as having been included by the objfile's bfd. |
12869 | This is important because things like demangled_names_hash lives in the | |
12870 | objfile's per_bfd space and may have references to things like symbol | |
12871 | names that live in the DWO/DWP file's per_bfd space. PR 16426. */ | |
192b62ce | 12872 | gdb_bfd_record_inclusion (dwarf2_per_objfile->objfile->obfd, sym_bfd.get ()); |
13aaf454 | 12873 | |
3019eac3 DE |
12874 | return sym_bfd; |
12875 | } | |
12876 | ||
ab5088bf | 12877 | /* Try to open DWO file FILE_NAME. |
3019eac3 DE |
12878 | COMP_DIR is the DW_AT_comp_dir attribute. |
12879 | The result is the bfd handle of the file. | |
12880 | If there is a problem finding or opening the file, return NULL. | |
12881 | Upon success, the canonicalized path of the file is stored in the bfd, | |
12882 | same as symfile_bfd_open. */ | |
12883 | ||
192b62ce | 12884 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
12885 | open_dwo_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
12886 | const char *file_name, const char *comp_dir) | |
3019eac3 | 12887 | { |
80626a55 | 12888 | if (IS_ABSOLUTE_PATH (file_name)) |
ed2dc618 SM |
12889 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12890 | 0 /*is_dwp*/, 0 /*search_cwd*/); | |
3019eac3 DE |
12891 | |
12892 | /* Before trying the search path, try DWO_NAME in COMP_DIR. */ | |
12893 | ||
12894 | if (comp_dir != NULL) | |
12895 | { | |
b36cec19 PA |
12896 | char *path_to_try = concat (comp_dir, SLASH_STRING, |
12897 | file_name, (char *) NULL); | |
3019eac3 DE |
12898 | |
12899 | /* NOTE: If comp_dir is a relative path, this will also try the | |
12900 | search path, which seems useful. */ | |
ed2dc618 SM |
12901 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, |
12902 | path_to_try, | |
12903 | 0 /*is_dwp*/, | |
192b62ce | 12904 | 1 /*search_cwd*/)); |
3019eac3 DE |
12905 | xfree (path_to_try); |
12906 | if (abfd != NULL) | |
12907 | return abfd; | |
12908 | } | |
12909 | ||
12910 | /* That didn't work, try debug-file-directory, which, despite its name, | |
12911 | is a list of paths. */ | |
12912 | ||
12913 | if (*debug_file_directory == '\0') | |
12914 | return NULL; | |
12915 | ||
ed2dc618 SM |
12916 | return try_open_dwop_file (dwarf2_per_objfile, file_name, |
12917 | 0 /*is_dwp*/, 1 /*search_cwd*/); | |
3019eac3 DE |
12918 | } |
12919 | ||
80626a55 DE |
12920 | /* This function is mapped across the sections and remembers the offset and |
12921 | size of each of the DWO debugging sections we are interested in. */ | |
12922 | ||
12923 | static void | |
12924 | dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr) | |
12925 | { | |
9a3c8263 | 12926 | struct dwo_sections *dwo_sections = (struct dwo_sections *) dwo_sections_ptr; |
80626a55 DE |
12927 | const struct dwop_section_names *names = &dwop_section_names; |
12928 | ||
12929 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
12930 | { | |
049412e3 | 12931 | dwo_sections->abbrev.s.section = sectp; |
80626a55 DE |
12932 | dwo_sections->abbrev.size = bfd_get_section_size (sectp); |
12933 | } | |
12934 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
12935 | { | |
049412e3 | 12936 | dwo_sections->info.s.section = sectp; |
80626a55 DE |
12937 | dwo_sections->info.size = bfd_get_section_size (sectp); |
12938 | } | |
12939 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
12940 | { | |
049412e3 | 12941 | dwo_sections->line.s.section = sectp; |
80626a55 DE |
12942 | dwo_sections->line.size = bfd_get_section_size (sectp); |
12943 | } | |
12944 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
12945 | { | |
049412e3 | 12946 | dwo_sections->loc.s.section = sectp; |
80626a55 DE |
12947 | dwo_sections->loc.size = bfd_get_section_size (sectp); |
12948 | } | |
12949 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
12950 | { | |
049412e3 | 12951 | dwo_sections->macinfo.s.section = sectp; |
80626a55 DE |
12952 | dwo_sections->macinfo.size = bfd_get_section_size (sectp); |
12953 | } | |
12954 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
12955 | { | |
049412e3 | 12956 | dwo_sections->macro.s.section = sectp; |
80626a55 DE |
12957 | dwo_sections->macro.size = bfd_get_section_size (sectp); |
12958 | } | |
12959 | else if (section_is_p (sectp->name, &names->str_dwo)) | |
12960 | { | |
049412e3 | 12961 | dwo_sections->str.s.section = sectp; |
80626a55 DE |
12962 | dwo_sections->str.size = bfd_get_section_size (sectp); |
12963 | } | |
12964 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
12965 | { | |
049412e3 | 12966 | dwo_sections->str_offsets.s.section = sectp; |
80626a55 DE |
12967 | dwo_sections->str_offsets.size = bfd_get_section_size (sectp); |
12968 | } | |
12969 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
12970 | { | |
12971 | struct dwarf2_section_info type_section; | |
12972 | ||
12973 | memset (&type_section, 0, sizeof (type_section)); | |
049412e3 | 12974 | type_section.s.section = sectp; |
80626a55 DE |
12975 | type_section.size = bfd_get_section_size (sectp); |
12976 | VEC_safe_push (dwarf2_section_info_def, dwo_sections->types, | |
12977 | &type_section); | |
12978 | } | |
12979 | } | |
12980 | ||
ab5088bf | 12981 | /* Initialize the use of the DWO file specified by DWO_NAME and referenced |
19c3d4c9 | 12982 | by PER_CU. This is for the non-DWP case. |
80626a55 | 12983 | The result is NULL if DWO_NAME can't be found. */ |
3019eac3 DE |
12984 | |
12985 | static struct dwo_file * | |
0ac5b59e DE |
12986 | open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu, |
12987 | const char *dwo_name, const char *comp_dir) | |
3019eac3 | 12988 | { |
ed2dc618 | 12989 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 | 12990 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 12991 | |
ed2dc618 | 12992 | gdb_bfd_ref_ptr dbfd (open_dwo_file (dwarf2_per_objfile, dwo_name, comp_dir)); |
80626a55 DE |
12993 | if (dbfd == NULL) |
12994 | { | |
b4f54984 | 12995 | if (dwarf_read_debug) |
80626a55 DE |
12996 | fprintf_unfiltered (gdb_stdlog, "DWO file not found: %s\n", dwo_name); |
12997 | return NULL; | |
12998 | } | |
263db9a1 TT |
12999 | |
13000 | /* We use a unique pointer here, despite the obstack allocation, | |
13001 | because a dwo_file needs some cleanup if it is abandoned. */ | |
13002 | dwo_file_up dwo_file (OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
13003 | struct dwo_file)); | |
0ac5b59e DE |
13004 | dwo_file->dwo_name = dwo_name; |
13005 | dwo_file->comp_dir = comp_dir; | |
192b62ce | 13006 | dwo_file->dbfd = dbfd.release (); |
3019eac3 | 13007 | |
192b62ce TT |
13008 | bfd_map_over_sections (dwo_file->dbfd, dwarf2_locate_dwo_sections, |
13009 | &dwo_file->sections); | |
3019eac3 | 13010 | |
ed2dc618 SM |
13011 | create_cus_hash_table (dwarf2_per_objfile, *dwo_file, dwo_file->sections.info, |
13012 | dwo_file->cus); | |
3019eac3 | 13013 | |
263db9a1 | 13014 | create_debug_types_hash_table (dwarf2_per_objfile, dwo_file.get (), |
ed2dc618 | 13015 | dwo_file->sections.types, dwo_file->tus); |
3019eac3 | 13016 | |
b4f54984 | 13017 | if (dwarf_read_debug) |
80626a55 DE |
13018 | fprintf_unfiltered (gdb_stdlog, "DWO file found: %s\n", dwo_name); |
13019 | ||
263db9a1 | 13020 | return dwo_file.release (); |
3019eac3 DE |
13021 | } |
13022 | ||
80626a55 | 13023 | /* This function is mapped across the sections and remembers the offset and |
73869dc2 DE |
13024 | size of each of the DWP debugging sections common to version 1 and 2 that |
13025 | we are interested in. */ | |
3019eac3 | 13026 | |
80626a55 | 13027 | static void |
73869dc2 DE |
13028 | dwarf2_locate_common_dwp_sections (bfd *abfd, asection *sectp, |
13029 | void *dwp_file_ptr) | |
3019eac3 | 13030 | { |
9a3c8263 | 13031 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
80626a55 DE |
13032 | const struct dwop_section_names *names = &dwop_section_names; |
13033 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
3019eac3 | 13034 | |
80626a55 | 13035 | /* Record the ELF section number for later lookup: this is what the |
73869dc2 | 13036 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ |
80626a55 DE |
13037 | gdb_assert (elf_section_nr < dwp_file->num_sections); |
13038 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
3019eac3 | 13039 | |
80626a55 DE |
13040 | /* Look for specific sections that we need. */ |
13041 | if (section_is_p (sectp->name, &names->str_dwo)) | |
13042 | { | |
049412e3 | 13043 | dwp_file->sections.str.s.section = sectp; |
80626a55 DE |
13044 | dwp_file->sections.str.size = bfd_get_section_size (sectp); |
13045 | } | |
13046 | else if (section_is_p (sectp->name, &names->cu_index)) | |
13047 | { | |
049412e3 | 13048 | dwp_file->sections.cu_index.s.section = sectp; |
80626a55 DE |
13049 | dwp_file->sections.cu_index.size = bfd_get_section_size (sectp); |
13050 | } | |
13051 | else if (section_is_p (sectp->name, &names->tu_index)) | |
13052 | { | |
049412e3 | 13053 | dwp_file->sections.tu_index.s.section = sectp; |
80626a55 DE |
13054 | dwp_file->sections.tu_index.size = bfd_get_section_size (sectp); |
13055 | } | |
13056 | } | |
3019eac3 | 13057 | |
73869dc2 DE |
13058 | /* This function is mapped across the sections and remembers the offset and |
13059 | size of each of the DWP version 2 debugging sections that we are interested | |
13060 | in. This is split into a separate function because we don't know if we | |
13061 | have version 1 or 2 until we parse the cu_index/tu_index sections. */ | |
13062 | ||
13063 | static void | |
13064 | dwarf2_locate_v2_dwp_sections (bfd *abfd, asection *sectp, void *dwp_file_ptr) | |
13065 | { | |
9a3c8263 | 13066 | struct dwp_file *dwp_file = (struct dwp_file *) dwp_file_ptr; |
73869dc2 DE |
13067 | const struct dwop_section_names *names = &dwop_section_names; |
13068 | unsigned int elf_section_nr = elf_section_data (sectp)->this_idx; | |
13069 | ||
13070 | /* Record the ELF section number for later lookup: this is what the | |
13071 | .debug_cu_index,.debug_tu_index tables use in DWP V1. */ | |
13072 | gdb_assert (elf_section_nr < dwp_file->num_sections); | |
13073 | dwp_file->elf_sections[elf_section_nr] = sectp; | |
13074 | ||
13075 | /* Look for specific sections that we need. */ | |
13076 | if (section_is_p (sectp->name, &names->abbrev_dwo)) | |
13077 | { | |
049412e3 | 13078 | dwp_file->sections.abbrev.s.section = sectp; |
73869dc2 DE |
13079 | dwp_file->sections.abbrev.size = bfd_get_section_size (sectp); |
13080 | } | |
13081 | else if (section_is_p (sectp->name, &names->info_dwo)) | |
13082 | { | |
049412e3 | 13083 | dwp_file->sections.info.s.section = sectp; |
73869dc2 DE |
13084 | dwp_file->sections.info.size = bfd_get_section_size (sectp); |
13085 | } | |
13086 | else if (section_is_p (sectp->name, &names->line_dwo)) | |
13087 | { | |
049412e3 | 13088 | dwp_file->sections.line.s.section = sectp; |
73869dc2 DE |
13089 | dwp_file->sections.line.size = bfd_get_section_size (sectp); |
13090 | } | |
13091 | else if (section_is_p (sectp->name, &names->loc_dwo)) | |
13092 | { | |
049412e3 | 13093 | dwp_file->sections.loc.s.section = sectp; |
73869dc2 DE |
13094 | dwp_file->sections.loc.size = bfd_get_section_size (sectp); |
13095 | } | |
13096 | else if (section_is_p (sectp->name, &names->macinfo_dwo)) | |
13097 | { | |
049412e3 | 13098 | dwp_file->sections.macinfo.s.section = sectp; |
73869dc2 DE |
13099 | dwp_file->sections.macinfo.size = bfd_get_section_size (sectp); |
13100 | } | |
13101 | else if (section_is_p (sectp->name, &names->macro_dwo)) | |
13102 | { | |
049412e3 | 13103 | dwp_file->sections.macro.s.section = sectp; |
73869dc2 DE |
13104 | dwp_file->sections.macro.size = bfd_get_section_size (sectp); |
13105 | } | |
13106 | else if (section_is_p (sectp->name, &names->str_offsets_dwo)) | |
13107 | { | |
049412e3 | 13108 | dwp_file->sections.str_offsets.s.section = sectp; |
73869dc2 DE |
13109 | dwp_file->sections.str_offsets.size = bfd_get_section_size (sectp); |
13110 | } | |
13111 | else if (section_is_p (sectp->name, &names->types_dwo)) | |
13112 | { | |
049412e3 | 13113 | dwp_file->sections.types.s.section = sectp; |
73869dc2 DE |
13114 | dwp_file->sections.types.size = bfd_get_section_size (sectp); |
13115 | } | |
13116 | } | |
13117 | ||
80626a55 | 13118 | /* Hash function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13119 | |
80626a55 DE |
13120 | static hashval_t |
13121 | hash_dwp_loaded_cutus (const void *item) | |
13122 | { | |
9a3c8263 | 13123 | const struct dwo_unit *dwo_unit = (const struct dwo_unit *) item; |
3019eac3 | 13124 | |
80626a55 DE |
13125 | /* This drops the top 32 bits of the signature, but is ok for a hash. */ |
13126 | return dwo_unit->signature; | |
3019eac3 DE |
13127 | } |
13128 | ||
80626a55 | 13129 | /* Equality function for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13130 | |
80626a55 DE |
13131 | static int |
13132 | eq_dwp_loaded_cutus (const void *a, const void *b) | |
3019eac3 | 13133 | { |
9a3c8263 SM |
13134 | const struct dwo_unit *dua = (const struct dwo_unit *) a; |
13135 | const struct dwo_unit *dub = (const struct dwo_unit *) b; | |
3019eac3 | 13136 | |
80626a55 DE |
13137 | return dua->signature == dub->signature; |
13138 | } | |
3019eac3 | 13139 | |
80626a55 | 13140 | /* Allocate a hash table for dwp_file loaded CUs/TUs. */ |
3019eac3 | 13141 | |
80626a55 DE |
13142 | static htab_t |
13143 | allocate_dwp_loaded_cutus_table (struct objfile *objfile) | |
13144 | { | |
13145 | return htab_create_alloc_ex (3, | |
13146 | hash_dwp_loaded_cutus, | |
13147 | eq_dwp_loaded_cutus, | |
13148 | NULL, | |
13149 | &objfile->objfile_obstack, | |
13150 | hashtab_obstack_allocate, | |
13151 | dummy_obstack_deallocate); | |
13152 | } | |
3019eac3 | 13153 | |
ab5088bf DE |
13154 | /* Try to open DWP file FILE_NAME. |
13155 | The result is the bfd handle of the file. | |
13156 | If there is a problem finding or opening the file, return NULL. | |
13157 | Upon success, the canonicalized path of the file is stored in the bfd, | |
13158 | same as symfile_bfd_open. */ | |
13159 | ||
192b62ce | 13160 | static gdb_bfd_ref_ptr |
ed2dc618 SM |
13161 | open_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile, |
13162 | const char *file_name) | |
ab5088bf | 13163 | { |
ed2dc618 SM |
13164 | gdb_bfd_ref_ptr abfd (try_open_dwop_file (dwarf2_per_objfile, file_name, |
13165 | 1 /*is_dwp*/, | |
192b62ce | 13166 | 1 /*search_cwd*/)); |
6ac97d4c DE |
13167 | if (abfd != NULL) |
13168 | return abfd; | |
13169 | ||
13170 | /* Work around upstream bug 15652. | |
13171 | http://sourceware.org/bugzilla/show_bug.cgi?id=15652 | |
13172 | [Whether that's a "bug" is debatable, but it is getting in our way.] | |
13173 | We have no real idea where the dwp file is, because gdb's realpath-ing | |
13174 | of the executable's path may have discarded the needed info. | |
13175 | [IWBN if the dwp file name was recorded in the executable, akin to | |
13176 | .gnu_debuglink, but that doesn't exist yet.] | |
13177 | Strip the directory from FILE_NAME and search again. */ | |
13178 | if (*debug_file_directory != '\0') | |
13179 | { | |
13180 | /* Don't implicitly search the current directory here. | |
13181 | If the user wants to search "." to handle this case, | |
13182 | it must be added to debug-file-directory. */ | |
ed2dc618 SM |
13183 | return try_open_dwop_file (dwarf2_per_objfile, |
13184 | lbasename (file_name), 1 /*is_dwp*/, | |
6ac97d4c DE |
13185 | 0 /*search_cwd*/); |
13186 | } | |
13187 | ||
13188 | return NULL; | |
ab5088bf DE |
13189 | } |
13190 | ||
80626a55 DE |
13191 | /* Initialize the use of the DWP file for the current objfile. |
13192 | By convention the name of the DWP file is ${objfile}.dwp. | |
13193 | The result is NULL if it can't be found. */ | |
a766d390 | 13194 | |
400174b1 | 13195 | static std::unique_ptr<struct dwp_file> |
ed2dc618 | 13196 | open_and_init_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
80626a55 DE |
13197 | { |
13198 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
80626a55 | 13199 | |
82bf32bc JK |
13200 | /* Try to find first .dwp for the binary file before any symbolic links |
13201 | resolving. */ | |
6c447423 DE |
13202 | |
13203 | /* If the objfile is a debug file, find the name of the real binary | |
13204 | file and get the name of dwp file from there. */ | |
d721ba37 | 13205 | std::string dwp_name; |
6c447423 DE |
13206 | if (objfile->separate_debug_objfile_backlink != NULL) |
13207 | { | |
13208 | struct objfile *backlink = objfile->separate_debug_objfile_backlink; | |
13209 | const char *backlink_basename = lbasename (backlink->original_name); | |
6c447423 | 13210 | |
d721ba37 | 13211 | dwp_name = ldirname (objfile->original_name) + SLASH_STRING + backlink_basename; |
6c447423 DE |
13212 | } |
13213 | else | |
d721ba37 PA |
13214 | dwp_name = objfile->original_name; |
13215 | ||
13216 | dwp_name += ".dwp"; | |
80626a55 | 13217 | |
ed2dc618 | 13218 | gdb_bfd_ref_ptr dbfd (open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ())); |
82bf32bc JK |
13219 | if (dbfd == NULL |
13220 | && strcmp (objfile->original_name, objfile_name (objfile)) != 0) | |
13221 | { | |
13222 | /* Try to find .dwp for the binary file after gdb_realpath resolving. */ | |
d721ba37 PA |
13223 | dwp_name = objfile_name (objfile); |
13224 | dwp_name += ".dwp"; | |
ed2dc618 | 13225 | dbfd = open_dwp_file (dwarf2_per_objfile, dwp_name.c_str ()); |
82bf32bc JK |
13226 | } |
13227 | ||
80626a55 DE |
13228 | if (dbfd == NULL) |
13229 | { | |
b4f54984 | 13230 | if (dwarf_read_debug) |
d721ba37 | 13231 | fprintf_unfiltered (gdb_stdlog, "DWP file not found: %s\n", dwp_name.c_str ()); |
400174b1 | 13232 | return std::unique_ptr<dwp_file> (); |
3019eac3 | 13233 | } |
400174b1 TT |
13234 | |
13235 | const char *name = bfd_get_filename (dbfd.get ()); | |
13236 | std::unique_ptr<struct dwp_file> dwp_file | |
13237 | (new struct dwp_file (name, std::move (dbfd))); | |
c906108c | 13238 | |
0a0f4c01 | 13239 | dwp_file->num_sections = elf_numsections (dwp_file->dbfd); |
80626a55 DE |
13240 | dwp_file->elf_sections = |
13241 | OBSTACK_CALLOC (&objfile->objfile_obstack, | |
13242 | dwp_file->num_sections, asection *); | |
13243 | ||
400174b1 TT |
13244 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13245 | dwarf2_locate_common_dwp_sections, | |
13246 | dwp_file.get ()); | |
80626a55 | 13247 | |
400174b1 TT |
13248 | dwp_file->cus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13249 | 0); | |
80626a55 | 13250 | |
400174b1 TT |
13251 | dwp_file->tus = create_dwp_hash_table (dwarf2_per_objfile, dwp_file.get (), |
13252 | 1); | |
80626a55 | 13253 | |
73869dc2 | 13254 | /* The DWP file version is stored in the hash table. Oh well. */ |
08302ed2 DE |
13255 | if (dwp_file->cus && dwp_file->tus |
13256 | && dwp_file->cus->version != dwp_file->tus->version) | |
73869dc2 DE |
13257 | { |
13258 | /* Technically speaking, we should try to limp along, but this is | |
fbcbc3fd | 13259 | pretty bizarre. We use pulongest here because that's the established |
4d65956b | 13260 | portability solution (e.g, we cannot use %u for uint32_t). */ |
fbcbc3fd DE |
13261 | error (_("Dwarf Error: DWP file CU version %s doesn't match" |
13262 | " TU version %s [in DWP file %s]"), | |
13263 | pulongest (dwp_file->cus->version), | |
d721ba37 | 13264 | pulongest (dwp_file->tus->version), dwp_name.c_str ()); |
73869dc2 | 13265 | } |
08302ed2 DE |
13266 | |
13267 | if (dwp_file->cus) | |
13268 | dwp_file->version = dwp_file->cus->version; | |
13269 | else if (dwp_file->tus) | |
13270 | dwp_file->version = dwp_file->tus->version; | |
13271 | else | |
13272 | dwp_file->version = 2; | |
73869dc2 DE |
13273 | |
13274 | if (dwp_file->version == 2) | |
400174b1 TT |
13275 | bfd_map_over_sections (dwp_file->dbfd.get (), |
13276 | dwarf2_locate_v2_dwp_sections, | |
13277 | dwp_file.get ()); | |
73869dc2 | 13278 | |
19ac8c2e DE |
13279 | dwp_file->loaded_cus = allocate_dwp_loaded_cutus_table (objfile); |
13280 | dwp_file->loaded_tus = allocate_dwp_loaded_cutus_table (objfile); | |
80626a55 | 13281 | |
b4f54984 | 13282 | if (dwarf_read_debug) |
80626a55 DE |
13283 | { |
13284 | fprintf_unfiltered (gdb_stdlog, "DWP file found: %s\n", dwp_file->name); | |
13285 | fprintf_unfiltered (gdb_stdlog, | |
21aa081e PA |
13286 | " %s CUs, %s TUs\n", |
13287 | pulongest (dwp_file->cus ? dwp_file->cus->nr_units : 0), | |
13288 | pulongest (dwp_file->tus ? dwp_file->tus->nr_units : 0)); | |
80626a55 DE |
13289 | } |
13290 | ||
13291 | return dwp_file; | |
3019eac3 | 13292 | } |
c906108c | 13293 | |
ab5088bf DE |
13294 | /* Wrapper around open_and_init_dwp_file, only open it once. */ |
13295 | ||
13296 | static struct dwp_file * | |
ed2dc618 | 13297 | get_dwp_file (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ab5088bf DE |
13298 | { |
13299 | if (! dwarf2_per_objfile->dwp_checked) | |
13300 | { | |
ed2dc618 SM |
13301 | dwarf2_per_objfile->dwp_file |
13302 | = open_and_init_dwp_file (dwarf2_per_objfile); | |
ab5088bf DE |
13303 | dwarf2_per_objfile->dwp_checked = 1; |
13304 | } | |
400174b1 | 13305 | return dwarf2_per_objfile->dwp_file.get (); |
ab5088bf DE |
13306 | } |
13307 | ||
80626a55 DE |
13308 | /* Subroutine of lookup_dwo_comp_unit, lookup_dwo_type_unit. |
13309 | Look up the CU/TU with signature SIGNATURE, either in DWO file DWO_NAME | |
13310 | or in the DWP file for the objfile, referenced by THIS_UNIT. | |
3019eac3 | 13311 | If non-NULL, comp_dir is the DW_AT_comp_dir attribute. |
80626a55 DE |
13312 | IS_DEBUG_TYPES is non-zero if reading a TU, otherwise read a CU. |
13313 | ||
13314 | This is called, for example, when wanting to read a variable with a | |
13315 | complex location. Therefore we don't want to do file i/o for every call. | |
13316 | Therefore we don't want to look for a DWO file on every call. | |
13317 | Therefore we first see if we've already seen SIGNATURE in a DWP file, | |
13318 | then we check if we've already seen DWO_NAME, and only THEN do we check | |
13319 | for a DWO file. | |
13320 | ||
1c658ad5 | 13321 | The result is a pointer to the dwo_unit object or NULL if we didn't find it |
80626a55 | 13322 | (dwo_id mismatch or couldn't find the DWO/DWP file). */ |
debd256d | 13323 | |
3019eac3 | 13324 | static struct dwo_unit * |
80626a55 DE |
13325 | lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit, |
13326 | const char *dwo_name, const char *comp_dir, | |
13327 | ULONGEST signature, int is_debug_types) | |
3019eac3 | 13328 | { |
ed2dc618 | 13329 | struct dwarf2_per_objfile *dwarf2_per_objfile = this_unit->dwarf2_per_objfile; |
3019eac3 | 13330 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
80626a55 DE |
13331 | const char *kind = is_debug_types ? "TU" : "CU"; |
13332 | void **dwo_file_slot; | |
3019eac3 | 13333 | struct dwo_file *dwo_file; |
80626a55 | 13334 | struct dwp_file *dwp_file; |
cb1df416 | 13335 | |
6a506a2d DE |
13336 | /* First see if there's a DWP file. |
13337 | If we have a DWP file but didn't find the DWO inside it, don't | |
13338 | look for the original DWO file. It makes gdb behave differently | |
13339 | depending on whether one is debugging in the build tree. */ | |
cf2c3c16 | 13340 | |
ed2dc618 | 13341 | dwp_file = get_dwp_file (dwarf2_per_objfile); |
80626a55 | 13342 | if (dwp_file != NULL) |
cf2c3c16 | 13343 | { |
80626a55 DE |
13344 | const struct dwp_hash_table *dwp_htab = |
13345 | is_debug_types ? dwp_file->tus : dwp_file->cus; | |
13346 | ||
13347 | if (dwp_htab != NULL) | |
13348 | { | |
13349 | struct dwo_unit *dwo_cutu = | |
ed2dc618 | 13350 | lookup_dwo_unit_in_dwp (dwarf2_per_objfile, dwp_file, comp_dir, |
57d63ce2 | 13351 | signature, is_debug_types); |
80626a55 DE |
13352 | |
13353 | if (dwo_cutu != NULL) | |
13354 | { | |
b4f54984 | 13355 | if (dwarf_read_debug) |
80626a55 DE |
13356 | { |
13357 | fprintf_unfiltered (gdb_stdlog, | |
13358 | "Virtual DWO %s %s found: @%s\n", | |
13359 | kind, hex_string (signature), | |
13360 | host_address_to_string (dwo_cutu)); | |
13361 | } | |
13362 | return dwo_cutu; | |
13363 | } | |
13364 | } | |
13365 | } | |
6a506a2d | 13366 | else |
80626a55 | 13367 | { |
6a506a2d | 13368 | /* No DWP file, look for the DWO file. */ |
80626a55 | 13369 | |
ed2dc618 SM |
13370 | dwo_file_slot = lookup_dwo_file_slot (dwarf2_per_objfile, |
13371 | dwo_name, comp_dir); | |
6a506a2d | 13372 | if (*dwo_file_slot == NULL) |
80626a55 | 13373 | { |
6a506a2d DE |
13374 | /* Read in the file and build a table of the CUs/TUs it contains. */ |
13375 | *dwo_file_slot = open_and_init_dwo_file (this_unit, dwo_name, comp_dir); | |
19c3d4c9 | 13376 | } |
6a506a2d | 13377 | /* NOTE: This will be NULL if unable to open the file. */ |
9a3c8263 | 13378 | dwo_file = (struct dwo_file *) *dwo_file_slot; |
3019eac3 | 13379 | |
6a506a2d | 13380 | if (dwo_file != NULL) |
19c3d4c9 | 13381 | { |
6a506a2d DE |
13382 | struct dwo_unit *dwo_cutu = NULL; |
13383 | ||
13384 | if (is_debug_types && dwo_file->tus) | |
13385 | { | |
13386 | struct dwo_unit find_dwo_cutu; | |
13387 | ||
13388 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13389 | find_dwo_cutu.signature = signature; | |
9a3c8263 SM |
13390 | dwo_cutu |
13391 | = (struct dwo_unit *) htab_find (dwo_file->tus, &find_dwo_cutu); | |
6a506a2d | 13392 | } |
33c5cd75 | 13393 | else if (!is_debug_types && dwo_file->cus) |
80626a55 | 13394 | { |
33c5cd75 DB |
13395 | struct dwo_unit find_dwo_cutu; |
13396 | ||
13397 | memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu)); | |
13398 | find_dwo_cutu.signature = signature; | |
13399 | dwo_cutu = (struct dwo_unit *)htab_find (dwo_file->cus, | |
13400 | &find_dwo_cutu); | |
6a506a2d DE |
13401 | } |
13402 | ||
13403 | if (dwo_cutu != NULL) | |
13404 | { | |
b4f54984 | 13405 | if (dwarf_read_debug) |
6a506a2d DE |
13406 | { |
13407 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n", | |
13408 | kind, dwo_name, hex_string (signature), | |
13409 | host_address_to_string (dwo_cutu)); | |
13410 | } | |
13411 | return dwo_cutu; | |
80626a55 DE |
13412 | } |
13413 | } | |
2e276125 | 13414 | } |
9cdd5dbd | 13415 | |
80626a55 DE |
13416 | /* We didn't find it. This could mean a dwo_id mismatch, or |
13417 | someone deleted the DWO/DWP file, or the search path isn't set up | |
13418 | correctly to find the file. */ | |
13419 | ||
b4f54984 | 13420 | if (dwarf_read_debug) |
80626a55 DE |
13421 | { |
13422 | fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) not found\n", | |
13423 | kind, dwo_name, hex_string (signature)); | |
13424 | } | |
3019eac3 | 13425 | |
6656a72d DE |
13426 | /* This is a warning and not a complaint because it can be caused by |
13427 | pilot error (e.g., user accidentally deleting the DWO). */ | |
43942612 DE |
13428 | { |
13429 | /* Print the name of the DWP file if we looked there, helps the user | |
13430 | better diagnose the problem. */ | |
791afaa2 | 13431 | std::string dwp_text; |
43942612 DE |
13432 | |
13433 | if (dwp_file != NULL) | |
791afaa2 TT |
13434 | dwp_text = string_printf (" [in DWP file %s]", |
13435 | lbasename (dwp_file->name)); | |
43942612 | 13436 | |
9d8780f0 | 13437 | warning (_("Could not find DWO %s %s(%s)%s referenced by %s at offset %s" |
43942612 DE |
13438 | " [in module %s]"), |
13439 | kind, dwo_name, hex_string (signature), | |
791afaa2 | 13440 | dwp_text.c_str (), |
43942612 | 13441 | this_unit->is_debug_types ? "TU" : "CU", |
9d8780f0 | 13442 | sect_offset_str (this_unit->sect_off), objfile_name (objfile)); |
43942612 | 13443 | } |
3019eac3 | 13444 | return NULL; |
5fb290d7 DJ |
13445 | } |
13446 | ||
80626a55 DE |
13447 | /* Lookup the DWO CU DWO_NAME/SIGNATURE referenced from THIS_CU. |
13448 | See lookup_dwo_cutu_unit for details. */ | |
13449 | ||
13450 | static struct dwo_unit * | |
13451 | lookup_dwo_comp_unit (struct dwarf2_per_cu_data *this_cu, | |
13452 | const char *dwo_name, const char *comp_dir, | |
13453 | ULONGEST signature) | |
13454 | { | |
13455 | return lookup_dwo_cutu (this_cu, dwo_name, comp_dir, signature, 0); | |
13456 | } | |
13457 | ||
13458 | /* Lookup the DWO TU DWO_NAME/SIGNATURE referenced from THIS_TU. | |
13459 | See lookup_dwo_cutu_unit for details. */ | |
13460 | ||
13461 | static struct dwo_unit * | |
13462 | lookup_dwo_type_unit (struct signatured_type *this_tu, | |
13463 | const char *dwo_name, const char *comp_dir) | |
13464 | { | |
13465 | return lookup_dwo_cutu (&this_tu->per_cu, dwo_name, comp_dir, this_tu->signature, 1); | |
13466 | } | |
13467 | ||
89e63ee4 DE |
13468 | /* Traversal function for queue_and_load_all_dwo_tus. */ |
13469 | ||
13470 | static int | |
13471 | queue_and_load_dwo_tu (void **slot, void *info) | |
13472 | { | |
13473 | struct dwo_unit *dwo_unit = (struct dwo_unit *) *slot; | |
13474 | struct dwarf2_per_cu_data *per_cu = (struct dwarf2_per_cu_data *) info; | |
13475 | ULONGEST signature = dwo_unit->signature; | |
13476 | struct signatured_type *sig_type = | |
13477 | lookup_dwo_signatured_type (per_cu->cu, signature); | |
13478 | ||
13479 | if (sig_type != NULL) | |
13480 | { | |
13481 | struct dwarf2_per_cu_data *sig_cu = &sig_type->per_cu; | |
13482 | ||
13483 | /* We pass NULL for DEPENDENT_CU because we don't yet know if there's | |
13484 | a real dependency of PER_CU on SIG_TYPE. That is detected later | |
13485 | while processing PER_CU. */ | |
13486 | if (maybe_queue_comp_unit (NULL, sig_cu, per_cu->cu->language)) | |
13487 | load_full_type_unit (sig_cu); | |
13488 | VEC_safe_push (dwarf2_per_cu_ptr, per_cu->imported_symtabs, sig_cu); | |
13489 | } | |
13490 | ||
13491 | return 1; | |
13492 | } | |
13493 | ||
13494 | /* Queue all TUs contained in the DWO of PER_CU to be read in. | |
13495 | The DWO may have the only definition of the type, though it may not be | |
13496 | referenced anywhere in PER_CU. Thus we have to load *all* its TUs. | |
13497 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021 */ | |
13498 | ||
13499 | static void | |
13500 | queue_and_load_all_dwo_tus (struct dwarf2_per_cu_data *per_cu) | |
13501 | { | |
13502 | struct dwo_unit *dwo_unit; | |
13503 | struct dwo_file *dwo_file; | |
13504 | ||
13505 | gdb_assert (!per_cu->is_debug_types); | |
ed2dc618 | 13506 | gdb_assert (get_dwp_file (per_cu->dwarf2_per_objfile) == NULL); |
89e63ee4 DE |
13507 | gdb_assert (per_cu->cu != NULL); |
13508 | ||
13509 | dwo_unit = per_cu->cu->dwo_unit; | |
13510 | gdb_assert (dwo_unit != NULL); | |
13511 | ||
13512 | dwo_file = dwo_unit->dwo_file; | |
13513 | if (dwo_file->tus != NULL) | |
13514 | htab_traverse_noresize (dwo_file->tus, queue_and_load_dwo_tu, per_cu); | |
13515 | } | |
13516 | ||
3019eac3 | 13517 | /* Free all resources associated with DWO_FILE. |
5dafb3d1 | 13518 | Close the DWO file and munmap the sections. */ |
348e048f DE |
13519 | |
13520 | static void | |
5dafb3d1 | 13521 | free_dwo_file (struct dwo_file *dwo_file) |
348e048f | 13522 | { |
5c6fa7ab | 13523 | /* Note: dbfd is NULL for virtual DWO files. */ |
80626a55 | 13524 | gdb_bfd_unref (dwo_file->dbfd); |
348e048f | 13525 | |
3019eac3 DE |
13526 | VEC_free (dwarf2_section_info_def, dwo_file->sections.types); |
13527 | } | |
348e048f | 13528 | |
3019eac3 | 13529 | /* Traversal function for free_dwo_files. */ |
2ab95328 | 13530 | |
3019eac3 DE |
13531 | static int |
13532 | free_dwo_file_from_slot (void **slot, void *info) | |
13533 | { | |
13534 | struct dwo_file *dwo_file = (struct dwo_file *) *slot; | |
348e048f | 13535 | |
5dafb3d1 | 13536 | free_dwo_file (dwo_file); |
348e048f | 13537 | |
3019eac3 DE |
13538 | return 1; |
13539 | } | |
348e048f | 13540 | |
3019eac3 | 13541 | /* Free all resources associated with DWO_FILES. */ |
348e048f | 13542 | |
3019eac3 DE |
13543 | static void |
13544 | free_dwo_files (htab_t dwo_files, struct objfile *objfile) | |
13545 | { | |
13546 | htab_traverse_noresize (dwo_files, free_dwo_file_from_slot, objfile); | |
348e048f | 13547 | } |
3019eac3 DE |
13548 | \f |
13549 | /* Read in various DIEs. */ | |
348e048f | 13550 | |
d389af10 | 13551 | /* DW_AT_abstract_origin inherits whole DIEs (not just their attributes). |
3e43a32a MS |
13552 | Inherit only the children of the DW_AT_abstract_origin DIE not being |
13553 | already referenced by DW_AT_abstract_origin from the children of the | |
13554 | current DIE. */ | |
d389af10 JK |
13555 | |
13556 | static void | |
13557 | inherit_abstract_dies (struct die_info *die, struct dwarf2_cu *cu) | |
13558 | { | |
13559 | struct die_info *child_die; | |
791afaa2 | 13560 | sect_offset *offsetp; |
d389af10 JK |
13561 | /* Parent of DIE - referenced by DW_AT_abstract_origin. */ |
13562 | struct die_info *origin_die; | |
13563 | /* Iterator of the ORIGIN_DIE children. */ | |
13564 | struct die_info *origin_child_die; | |
d389af10 | 13565 | struct attribute *attr; |
cd02d79d PA |
13566 | struct dwarf2_cu *origin_cu; |
13567 | struct pending **origin_previous_list_in_scope; | |
d389af10 JK |
13568 | |
13569 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
13570 | if (!attr) | |
13571 | return; | |
13572 | ||
cd02d79d PA |
13573 | /* Note that following die references may follow to a die in a |
13574 | different cu. */ | |
13575 | ||
13576 | origin_cu = cu; | |
13577 | origin_die = follow_die_ref (die, attr, &origin_cu); | |
13578 | ||
13579 | /* We're inheriting ORIGIN's children into the scope we'd put DIE's | |
13580 | symbols in. */ | |
13581 | origin_previous_list_in_scope = origin_cu->list_in_scope; | |
13582 | origin_cu->list_in_scope = cu->list_in_scope; | |
13583 | ||
edb3359d DJ |
13584 | if (die->tag != origin_die->tag |
13585 | && !(die->tag == DW_TAG_inlined_subroutine | |
13586 | && origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13587 | complaint (_("DIE %s and its abstract origin %s have different tags"), |
9d8780f0 SM |
13588 | sect_offset_str (die->sect_off), |
13589 | sect_offset_str (origin_die->sect_off)); | |
d389af10 | 13590 | |
791afaa2 | 13591 | std::vector<sect_offset> offsets; |
d389af10 | 13592 | |
3ea89b92 PMR |
13593 | for (child_die = die->child; |
13594 | child_die && child_die->tag; | |
13595 | child_die = sibling_die (child_die)) | |
13596 | { | |
13597 | struct die_info *child_origin_die; | |
13598 | struct dwarf2_cu *child_origin_cu; | |
13599 | ||
13600 | /* We are trying to process concrete instance entries: | |
216f72a1 | 13601 | DW_TAG_call_site DIEs indeed have a DW_AT_abstract_origin tag, but |
3ea89b92 PMR |
13602 | it's not relevant to our analysis here. i.e. detecting DIEs that are |
13603 | present in the abstract instance but not referenced in the concrete | |
13604 | one. */ | |
216f72a1 JK |
13605 | if (child_die->tag == DW_TAG_call_site |
13606 | || child_die->tag == DW_TAG_GNU_call_site) | |
3ea89b92 PMR |
13607 | continue; |
13608 | ||
c38f313d DJ |
13609 | /* For each CHILD_DIE, find the corresponding child of |
13610 | ORIGIN_DIE. If there is more than one layer of | |
13611 | DW_AT_abstract_origin, follow them all; there shouldn't be, | |
13612 | but GCC versions at least through 4.4 generate this (GCC PR | |
13613 | 40573). */ | |
3ea89b92 PMR |
13614 | child_origin_die = child_die; |
13615 | child_origin_cu = cu; | |
c38f313d DJ |
13616 | while (1) |
13617 | { | |
cd02d79d PA |
13618 | attr = dwarf2_attr (child_origin_die, DW_AT_abstract_origin, |
13619 | child_origin_cu); | |
c38f313d DJ |
13620 | if (attr == NULL) |
13621 | break; | |
cd02d79d PA |
13622 | child_origin_die = follow_die_ref (child_origin_die, attr, |
13623 | &child_origin_cu); | |
c38f313d DJ |
13624 | } |
13625 | ||
d389af10 JK |
13626 | /* According to DWARF3 3.3.8.2 #3 new entries without their abstract |
13627 | counterpart may exist. */ | |
c38f313d | 13628 | if (child_origin_die != child_die) |
d389af10 | 13629 | { |
edb3359d DJ |
13630 | if (child_die->tag != child_origin_die->tag |
13631 | && !(child_die->tag == DW_TAG_inlined_subroutine | |
13632 | && child_origin_die->tag == DW_TAG_subprogram)) | |
b98664d3 | 13633 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13634 | "different tags"), |
9d8780f0 SM |
13635 | sect_offset_str (child_die->sect_off), |
13636 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13637 | if (child_origin_die->parent != origin_die) |
b98664d3 | 13638 | complaint (_("Child DIE %s and its abstract origin %s have " |
9c541725 | 13639 | "different parents"), |
9d8780f0 SM |
13640 | sect_offset_str (child_die->sect_off), |
13641 | sect_offset_str (child_origin_die->sect_off)); | |
c38f313d | 13642 | else |
791afaa2 | 13643 | offsets.push_back (child_origin_die->sect_off); |
d389af10 | 13644 | } |
d389af10 | 13645 | } |
791afaa2 TT |
13646 | std::sort (offsets.begin (), offsets.end ()); |
13647 | sect_offset *offsets_end = offsets.data () + offsets.size (); | |
13648 | for (offsetp = offsets.data () + 1; offsetp < offsets_end; offsetp++) | |
9c541725 | 13649 | if (offsetp[-1] == *offsetp) |
b98664d3 | 13650 | complaint (_("Multiple children of DIE %s refer " |
9d8780f0 SM |
13651 | "to DIE %s as their abstract origin"), |
13652 | sect_offset_str (die->sect_off), sect_offset_str (*offsetp)); | |
d389af10 | 13653 | |
791afaa2 | 13654 | offsetp = offsets.data (); |
d389af10 JK |
13655 | origin_child_die = origin_die->child; |
13656 | while (origin_child_die && origin_child_die->tag) | |
13657 | { | |
13658 | /* Is ORIGIN_CHILD_DIE referenced by any of the DIE children? */ | |
b64f50a1 | 13659 | while (offsetp < offsets_end |
9c541725 | 13660 | && *offsetp < origin_child_die->sect_off) |
d389af10 | 13661 | offsetp++; |
b64f50a1 | 13662 | if (offsetp >= offsets_end |
9c541725 | 13663 | || *offsetp > origin_child_die->sect_off) |
d389af10 | 13664 | { |
adde2bff DE |
13665 | /* Found that ORIGIN_CHILD_DIE is really not referenced. |
13666 | Check whether we're already processing ORIGIN_CHILD_DIE. | |
13667 | This can happen with mutually referenced abstract_origins. | |
13668 | PR 16581. */ | |
13669 | if (!origin_child_die->in_process) | |
13670 | process_die (origin_child_die, origin_cu); | |
d389af10 JK |
13671 | } |
13672 | origin_child_die = sibling_die (origin_child_die); | |
13673 | } | |
cd02d79d | 13674 | origin_cu->list_in_scope = origin_previous_list_in_scope; |
d389af10 JK |
13675 | } |
13676 | ||
c906108c | 13677 | static void |
e7c27a73 | 13678 | read_func_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13679 | { |
518817b3 | 13680 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13681 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
fe978cb0 | 13682 | struct context_stack *newobj; |
c906108c SS |
13683 | CORE_ADDR lowpc; |
13684 | CORE_ADDR highpc; | |
13685 | struct die_info *child_die; | |
edb3359d | 13686 | struct attribute *attr, *call_line, *call_file; |
15d034d0 | 13687 | const char *name; |
e142c38c | 13688 | CORE_ADDR baseaddr; |
801e3a5b | 13689 | struct block *block; |
edb3359d | 13690 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
2f4732b0 | 13691 | std::vector<struct symbol *> template_args; |
34eaf542 | 13692 | struct template_symbol *templ_func = NULL; |
edb3359d DJ |
13693 | |
13694 | if (inlined_func) | |
13695 | { | |
13696 | /* If we do not have call site information, we can't show the | |
13697 | caller of this inlined function. That's too confusing, so | |
13698 | only use the scope for local variables. */ | |
13699 | call_line = dwarf2_attr (die, DW_AT_call_line, cu); | |
13700 | call_file = dwarf2_attr (die, DW_AT_call_file, cu); | |
13701 | if (call_line == NULL || call_file == NULL) | |
13702 | { | |
13703 | read_lexical_block_scope (die, cu); | |
13704 | return; | |
13705 | } | |
13706 | } | |
c906108c | 13707 | |
e142c38c DJ |
13708 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
13709 | ||
94af9270 | 13710 | name = dwarf2_name (die, cu); |
c906108c | 13711 | |
e8d05480 JB |
13712 | /* Ignore functions with missing or empty names. These are actually |
13713 | illegal according to the DWARF standard. */ | |
13714 | if (name == NULL) | |
13715 | { | |
b98664d3 | 13716 | complaint (_("missing name for subprogram DIE at %s"), |
9d8780f0 | 13717 | sect_offset_str (die->sect_off)); |
e8d05480 JB |
13718 | return; |
13719 | } | |
13720 | ||
13721 | /* Ignore functions with missing or invalid low and high pc attributes. */ | |
3a2b436a | 13722 | if (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL) |
e385593e | 13723 | <= PC_BOUNDS_INVALID) |
e8d05480 | 13724 | { |
ae4d0c03 PM |
13725 | attr = dwarf2_attr (die, DW_AT_external, cu); |
13726 | if (!attr || !DW_UNSND (attr)) | |
b98664d3 | 13727 | complaint (_("cannot get low and high bounds " |
9d8780f0 SM |
13728 | "for subprogram DIE at %s"), |
13729 | sect_offset_str (die->sect_off)); | |
e8d05480 JB |
13730 | return; |
13731 | } | |
c906108c | 13732 | |
3e29f34a MR |
13733 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13734 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13735 | |
34eaf542 TT |
13736 | /* If we have any template arguments, then we must allocate a |
13737 | different sort of symbol. */ | |
13738 | for (child_die = die->child; child_die; child_die = sibling_die (child_die)) | |
13739 | { | |
13740 | if (child_die->tag == DW_TAG_template_type_param | |
13741 | || child_die->tag == DW_TAG_template_value_param) | |
13742 | { | |
e623cf5d | 13743 | templ_func = allocate_template_symbol (objfile); |
cf724bc9 | 13744 | templ_func->subclass = SYMBOL_TEMPLATE; |
34eaf542 TT |
13745 | break; |
13746 | } | |
13747 | } | |
13748 | ||
c24bdb02 | 13749 | newobj = cu->get_builder ()->push_context (0, lowpc); |
5e2db402 TT |
13750 | newobj->name = new_symbol (die, read_type_die (die, cu), cu, |
13751 | (struct symbol *) templ_func); | |
4c2df51b | 13752 | |
81873cc8 TV |
13753 | if (dwarf2_flag_true_p (die, DW_AT_main_subprogram, cu)) |
13754 | set_objfile_main_name (objfile, SYMBOL_LINKAGE_NAME (newobj->name), | |
13755 | cu->language); | |
13756 | ||
4cecd739 DJ |
13757 | /* If there is a location expression for DW_AT_frame_base, record |
13758 | it. */ | |
e142c38c | 13759 | attr = dwarf2_attr (die, DW_AT_frame_base, cu); |
4c2df51b | 13760 | if (attr) |
fe978cb0 | 13761 | dwarf2_symbol_mark_computed (attr, newobj->name, cu, 1); |
4c2df51b | 13762 | |
63e43d3a PMR |
13763 | /* If there is a location for the static link, record it. */ |
13764 | newobj->static_link = NULL; | |
13765 | attr = dwarf2_attr (die, DW_AT_static_link, cu); | |
13766 | if (attr) | |
13767 | { | |
224c3ddb SM |
13768 | newobj->static_link |
13769 | = XOBNEW (&objfile->objfile_obstack, struct dynamic_prop); | |
63e43d3a PMR |
13770 | attr_to_dynamic_prop (attr, die, cu, newobj->static_link); |
13771 | } | |
13772 | ||
c24bdb02 | 13773 | cu->list_in_scope = cu->get_builder ()->get_local_symbols (); |
c906108c | 13774 | |
639d11d3 | 13775 | if (die->child != NULL) |
c906108c | 13776 | { |
639d11d3 | 13777 | child_die = die->child; |
c906108c SS |
13778 | while (child_die && child_die->tag) |
13779 | { | |
34eaf542 TT |
13780 | if (child_die->tag == DW_TAG_template_type_param |
13781 | || child_die->tag == DW_TAG_template_value_param) | |
13782 | { | |
13783 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
13784 | ||
f1078f66 | 13785 | if (arg != NULL) |
2f4732b0 | 13786 | template_args.push_back (arg); |
34eaf542 TT |
13787 | } |
13788 | else | |
13789 | process_die (child_die, cu); | |
c906108c SS |
13790 | child_die = sibling_die (child_die); |
13791 | } | |
13792 | } | |
13793 | ||
d389af10 JK |
13794 | inherit_abstract_dies (die, cu); |
13795 | ||
4a811a97 UW |
13796 | /* If we have a DW_AT_specification, we might need to import using |
13797 | directives from the context of the specification DIE. See the | |
13798 | comment in determine_prefix. */ | |
13799 | if (cu->language == language_cplus | |
13800 | && dwarf2_attr (die, DW_AT_specification, cu)) | |
13801 | { | |
13802 | struct dwarf2_cu *spec_cu = cu; | |
13803 | struct die_info *spec_die = die_specification (die, &spec_cu); | |
13804 | ||
13805 | while (spec_die) | |
13806 | { | |
13807 | child_die = spec_die->child; | |
13808 | while (child_die && child_die->tag) | |
13809 | { | |
13810 | if (child_die->tag == DW_TAG_imported_module) | |
13811 | process_die (child_die, spec_cu); | |
13812 | child_die = sibling_die (child_die); | |
13813 | } | |
13814 | ||
13815 | /* In some cases, GCC generates specification DIEs that | |
13816 | themselves contain DW_AT_specification attributes. */ | |
13817 | spec_die = die_specification (spec_die, &spec_cu); | |
13818 | } | |
13819 | } | |
13820 | ||
c24bdb02 | 13821 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13822 | /* Make a block for the local symbols within. */ |
c24bdb02 | 13823 | block = cu->get_builder ()->finish_block (cstk.name, cstk.old_blocks, |
804d2729 | 13824 | cstk.static_link, lowpc, highpc); |
801e3a5b | 13825 | |
df8a16a1 | 13826 | /* For C++, set the block's scope. */ |
45280282 IB |
13827 | if ((cu->language == language_cplus |
13828 | || cu->language == language_fortran | |
c44af4eb TT |
13829 | || cu->language == language_d |
13830 | || cu->language == language_rust) | |
4d4ec4e5 | 13831 | && cu->processing_has_namespace_info) |
195a3f6c TT |
13832 | block_set_scope (block, determine_prefix (die, cu), |
13833 | &objfile->objfile_obstack); | |
df8a16a1 | 13834 | |
801e3a5b JB |
13835 | /* If we have address ranges, record them. */ |
13836 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
6e70227d | 13837 | |
a60f3166 | 13838 | gdbarch_make_symbol_special (gdbarch, cstk.name, objfile); |
3e29f34a | 13839 | |
34eaf542 | 13840 | /* Attach template arguments to function. */ |
2f4732b0 | 13841 | if (!template_args.empty ()) |
34eaf542 TT |
13842 | { |
13843 | gdb_assert (templ_func != NULL); | |
13844 | ||
2f4732b0 | 13845 | templ_func->n_template_arguments = template_args.size (); |
34eaf542 | 13846 | templ_func->template_arguments |
8d749320 SM |
13847 | = XOBNEWVEC (&objfile->objfile_obstack, struct symbol *, |
13848 | templ_func->n_template_arguments); | |
34eaf542 | 13849 | memcpy (templ_func->template_arguments, |
2f4732b0 | 13850 | template_args.data (), |
34eaf542 | 13851 | (templ_func->n_template_arguments * sizeof (struct symbol *))); |
3e1d3d8c TT |
13852 | |
13853 | /* Make sure that the symtab is set on the new symbols. Even | |
13854 | though they don't appear in this symtab directly, other parts | |
13855 | of gdb assume that symbols do, and this is reasonably | |
13856 | true. */ | |
8634679f | 13857 | for (symbol *sym : template_args) |
3e1d3d8c | 13858 | symbol_set_symtab (sym, symbol_symtab (templ_func)); |
34eaf542 TT |
13859 | } |
13860 | ||
208d8187 JB |
13861 | /* In C++, we can have functions nested inside functions (e.g., when |
13862 | a function declares a class that has methods). This means that | |
13863 | when we finish processing a function scope, we may need to go | |
13864 | back to building a containing block's symbol lists. */ | |
c24bdb02 KS |
13865 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13866 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
208d8187 | 13867 | |
921e78cf JB |
13868 | /* If we've finished processing a top-level function, subsequent |
13869 | symbols go in the file symbol list. */ | |
c24bdb02 KS |
13870 | if (cu->get_builder ()->outermost_context_p ()) |
13871 | cu->list_in_scope = cu->get_builder ()->get_file_symbols (); | |
c906108c SS |
13872 | } |
13873 | ||
13874 | /* Process all the DIES contained within a lexical block scope. Start | |
13875 | a new scope, process the dies, and then close the scope. */ | |
13876 | ||
13877 | static void | |
e7c27a73 | 13878 | read_lexical_block_scope (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 13879 | { |
518817b3 | 13880 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 13881 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
13882 | CORE_ADDR lowpc, highpc; |
13883 | struct die_info *child_die; | |
e142c38c DJ |
13884 | CORE_ADDR baseaddr; |
13885 | ||
13886 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
13887 | |
13888 | /* Ignore blocks with missing or invalid low and high pc attributes. */ | |
af34e669 DJ |
13889 | /* ??? Perhaps consider discontiguous blocks defined by DW_AT_ranges |
13890 | as multiple lexical blocks? Handling children in a sane way would | |
6e70227d | 13891 | be nasty. Might be easier to properly extend generic blocks to |
af34e669 | 13892 | describe ranges. */ |
e385593e JK |
13893 | switch (dwarf2_get_pc_bounds (die, &lowpc, &highpc, cu, NULL)) |
13894 | { | |
13895 | case PC_BOUNDS_NOT_PRESENT: | |
13896 | /* DW_TAG_lexical_block has no attributes, process its children as if | |
13897 | there was no wrapping by that DW_TAG_lexical_block. | |
13898 | GCC does no longer produces such DWARF since GCC r224161. */ | |
13899 | for (child_die = die->child; | |
13900 | child_die != NULL && child_die->tag; | |
13901 | child_die = sibling_die (child_die)) | |
13902 | process_die (child_die, cu); | |
13903 | return; | |
13904 | case PC_BOUNDS_INVALID: | |
13905 | return; | |
13906 | } | |
3e29f34a MR |
13907 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); |
13908 | highpc = gdbarch_adjust_dwarf2_addr (gdbarch, highpc + baseaddr); | |
c906108c | 13909 | |
c24bdb02 | 13910 | cu->get_builder ()->push_context (0, lowpc); |
639d11d3 | 13911 | if (die->child != NULL) |
c906108c | 13912 | { |
639d11d3 | 13913 | child_die = die->child; |
c906108c SS |
13914 | while (child_die && child_die->tag) |
13915 | { | |
e7c27a73 | 13916 | process_die (child_die, cu); |
c906108c SS |
13917 | child_die = sibling_die (child_die); |
13918 | } | |
13919 | } | |
3ea89b92 | 13920 | inherit_abstract_dies (die, cu); |
c24bdb02 | 13921 | struct context_stack cstk = cu->get_builder ()->pop_context (); |
c906108c | 13922 | |
c24bdb02 KS |
13923 | if (*cu->get_builder ()->get_local_symbols () != NULL |
13924 | || (*cu->get_builder ()->get_local_using_directives ()) != NULL) | |
c906108c | 13925 | { |
801e3a5b | 13926 | struct block *block |
c24bdb02 | 13927 | = cu->get_builder ()->finish_block (0, cstk.old_blocks, NULL, |
804d2729 | 13928 | cstk.start_addr, highpc); |
801e3a5b JB |
13929 | |
13930 | /* Note that recording ranges after traversing children, as we | |
13931 | do here, means that recording a parent's ranges entails | |
13932 | walking across all its children's ranges as they appear in | |
13933 | the address map, which is quadratic behavior. | |
13934 | ||
13935 | It would be nicer to record the parent's ranges before | |
13936 | traversing its children, simply overriding whatever you find | |
13937 | there. But since we don't even decide whether to create a | |
13938 | block until after we've traversed its children, that's hard | |
13939 | to do. */ | |
13940 | dwarf2_record_block_ranges (die, block, baseaddr, cu); | |
c906108c | 13941 | } |
c24bdb02 KS |
13942 | *cu->get_builder ()->get_local_symbols () = cstk.locals; |
13943 | cu->get_builder ()->set_local_using_directives (cstk.local_using_directives); | |
c906108c SS |
13944 | } |
13945 | ||
216f72a1 | 13946 | /* Read in DW_TAG_call_site and insert it to CU->call_site_htab. */ |
96408a79 SA |
13947 | |
13948 | static void | |
13949 | read_call_site_scope (struct die_info *die, struct dwarf2_cu *cu) | |
13950 | { | |
518817b3 | 13951 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
96408a79 SA |
13952 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
13953 | CORE_ADDR pc, baseaddr; | |
13954 | struct attribute *attr; | |
13955 | struct call_site *call_site, call_site_local; | |
13956 | void **slot; | |
13957 | int nparams; | |
13958 | struct die_info *child_die; | |
13959 | ||
13960 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
13961 | ||
216f72a1 JK |
13962 | attr = dwarf2_attr (die, DW_AT_call_return_pc, cu); |
13963 | if (attr == NULL) | |
13964 | { | |
13965 | /* This was a pre-DWARF-5 GNU extension alias | |
13966 | for DW_AT_call_return_pc. */ | |
13967 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); | |
13968 | } | |
96408a79 SA |
13969 | if (!attr) |
13970 | { | |
b98664d3 | 13971 | complaint (_("missing DW_AT_call_return_pc for DW_TAG_call_site " |
9d8780f0 SM |
13972 | "DIE %s [in module %s]"), |
13973 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
13974 | return; |
13975 | } | |
31aa7e4e | 13976 | pc = attr_value_as_address (attr) + baseaddr; |
3e29f34a | 13977 | pc = gdbarch_adjust_dwarf2_addr (gdbarch, pc); |
96408a79 SA |
13978 | |
13979 | if (cu->call_site_htab == NULL) | |
13980 | cu->call_site_htab = htab_create_alloc_ex (16, core_addr_hash, core_addr_eq, | |
13981 | NULL, &objfile->objfile_obstack, | |
13982 | hashtab_obstack_allocate, NULL); | |
13983 | call_site_local.pc = pc; | |
13984 | slot = htab_find_slot (cu->call_site_htab, &call_site_local, INSERT); | |
13985 | if (*slot != NULL) | |
13986 | { | |
b98664d3 | 13987 | complaint (_("Duplicate PC %s for DW_TAG_call_site " |
9d8780f0 SM |
13988 | "DIE %s [in module %s]"), |
13989 | paddress (gdbarch, pc), sect_offset_str (die->sect_off), | |
4262abfb | 13990 | objfile_name (objfile)); |
96408a79 SA |
13991 | return; |
13992 | } | |
13993 | ||
13994 | /* Count parameters at the caller. */ | |
13995 | ||
13996 | nparams = 0; | |
13997 | for (child_die = die->child; child_die && child_die->tag; | |
13998 | child_die = sibling_die (child_die)) | |
13999 | { | |
216f72a1 JK |
14000 | if (child_die->tag != DW_TAG_call_site_parameter |
14001 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 | 14002 | { |
b98664d3 | 14003 | complaint (_("Tag %d is not DW_TAG_call_site_parameter in " |
9d8780f0 SM |
14004 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14005 | child_die->tag, sect_offset_str (child_die->sect_off), | |
4262abfb | 14006 | objfile_name (objfile)); |
96408a79 SA |
14007 | continue; |
14008 | } | |
14009 | ||
14010 | nparams++; | |
14011 | } | |
14012 | ||
224c3ddb SM |
14013 | call_site |
14014 | = ((struct call_site *) | |
14015 | obstack_alloc (&objfile->objfile_obstack, | |
14016 | sizeof (*call_site) | |
14017 | + (sizeof (*call_site->parameter) * (nparams - 1)))); | |
96408a79 SA |
14018 | *slot = call_site; |
14019 | memset (call_site, 0, sizeof (*call_site) - sizeof (*call_site->parameter)); | |
14020 | call_site->pc = pc; | |
14021 | ||
216f72a1 JK |
14022 | if (dwarf2_flag_true_p (die, DW_AT_call_tail_call, cu) |
14023 | || dwarf2_flag_true_p (die, DW_AT_GNU_tail_call, cu)) | |
96408a79 SA |
14024 | { |
14025 | struct die_info *func_die; | |
14026 | ||
14027 | /* Skip also over DW_TAG_inlined_subroutine. */ | |
14028 | for (func_die = die->parent; | |
14029 | func_die && func_die->tag != DW_TAG_subprogram | |
14030 | && func_die->tag != DW_TAG_subroutine_type; | |
14031 | func_die = func_die->parent); | |
14032 | ||
216f72a1 JK |
14033 | /* DW_AT_call_all_calls is a superset |
14034 | of DW_AT_call_all_tail_calls. */ | |
96408a79 | 14035 | if (func_die |
216f72a1 | 14036 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_calls, cu) |
96408a79 | 14037 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_call_sites, cu) |
216f72a1 | 14038 | && !dwarf2_flag_true_p (func_die, DW_AT_call_all_tail_calls, cu) |
96408a79 SA |
14039 | && !dwarf2_flag_true_p (func_die, DW_AT_GNU_all_tail_call_sites, cu)) |
14040 | { | |
14041 | /* TYPE_TAIL_CALL_LIST is not interesting in functions where it is | |
14042 | not complete. But keep CALL_SITE for look ups via call_site_htab, | |
14043 | both the initial caller containing the real return address PC and | |
14044 | the final callee containing the current PC of a chain of tail | |
14045 | calls do not need to have the tail call list complete. But any | |
14046 | function candidate for a virtual tail call frame searched via | |
14047 | TYPE_TAIL_CALL_LIST must have the tail call list complete to be | |
14048 | determined unambiguously. */ | |
14049 | } | |
14050 | else | |
14051 | { | |
14052 | struct type *func_type = NULL; | |
14053 | ||
14054 | if (func_die) | |
14055 | func_type = get_die_type (func_die, cu); | |
14056 | if (func_type != NULL) | |
14057 | { | |
14058 | gdb_assert (TYPE_CODE (func_type) == TYPE_CODE_FUNC); | |
14059 | ||
14060 | /* Enlist this call site to the function. */ | |
14061 | call_site->tail_call_next = TYPE_TAIL_CALL_LIST (func_type); | |
14062 | TYPE_TAIL_CALL_LIST (func_type) = call_site; | |
14063 | } | |
14064 | else | |
b98664d3 | 14065 | complaint (_("Cannot find function owning DW_TAG_call_site " |
9d8780f0 SM |
14066 | "DIE %s [in module %s]"), |
14067 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14068 | } |
14069 | } | |
14070 | ||
216f72a1 JK |
14071 | attr = dwarf2_attr (die, DW_AT_call_target, cu); |
14072 | if (attr == NULL) | |
14073 | attr = dwarf2_attr (die, DW_AT_GNU_call_site_target, cu); | |
14074 | if (attr == NULL) | |
14075 | attr = dwarf2_attr (die, DW_AT_call_origin, cu); | |
96408a79 | 14076 | if (attr == NULL) |
216f72a1 JK |
14077 | { |
14078 | /* This was a pre-DWARF-5 GNU extension alias for DW_AT_call_origin. */ | |
14079 | attr = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14080 | } | |
96408a79 SA |
14081 | SET_FIELD_DWARF_BLOCK (call_site->target, NULL); |
14082 | if (!attr || (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0)) | |
14083 | /* Keep NULL DWARF_BLOCK. */; | |
14084 | else if (attr_form_is_block (attr)) | |
14085 | { | |
14086 | struct dwarf2_locexpr_baton *dlbaton; | |
14087 | ||
8d749320 | 14088 | dlbaton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
96408a79 SA |
14089 | dlbaton->data = DW_BLOCK (attr)->data; |
14090 | dlbaton->size = DW_BLOCK (attr)->size; | |
14091 | dlbaton->per_cu = cu->per_cu; | |
14092 | ||
14093 | SET_FIELD_DWARF_BLOCK (call_site->target, dlbaton); | |
14094 | } | |
7771576e | 14095 | else if (attr_form_is_ref (attr)) |
96408a79 | 14096 | { |
96408a79 SA |
14097 | struct dwarf2_cu *target_cu = cu; |
14098 | struct die_info *target_die; | |
14099 | ||
ac9ec31b | 14100 | target_die = follow_die_ref (die, attr, &target_cu); |
518817b3 | 14101 | gdb_assert (target_cu->per_cu->dwarf2_per_objfile->objfile == objfile); |
96408a79 SA |
14102 | if (die_is_declaration (target_die, target_cu)) |
14103 | { | |
7d45c7c3 | 14104 | const char *target_physname; |
9112db09 JK |
14105 | |
14106 | /* Prefer the mangled name; otherwise compute the demangled one. */ | |
73b9be8b | 14107 | target_physname = dw2_linkage_name (target_die, target_cu); |
7d45c7c3 | 14108 | if (target_physname == NULL) |
9112db09 | 14109 | target_physname = dwarf2_physname (NULL, target_die, target_cu); |
96408a79 | 14110 | if (target_physname == NULL) |
b98664d3 | 14111 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14112 | "physname, for referencing DIE %s [in module %s]"), |
14113 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14114 | else |
7d455152 | 14115 | SET_FIELD_PHYSNAME (call_site->target, target_physname); |
96408a79 SA |
14116 | } |
14117 | else | |
14118 | { | |
14119 | CORE_ADDR lowpc; | |
14120 | ||
14121 | /* DW_AT_entry_pc should be preferred. */ | |
3a2b436a | 14122 | if (dwarf2_get_pc_bounds (target_die, &lowpc, NULL, target_cu, NULL) |
e385593e | 14123 | <= PC_BOUNDS_INVALID) |
b98664d3 | 14124 | complaint (_("DW_AT_call_target target DIE has invalid " |
9d8780f0 SM |
14125 | "low pc, for referencing DIE %s [in module %s]"), |
14126 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 | 14127 | else |
3e29f34a MR |
14128 | { |
14129 | lowpc = gdbarch_adjust_dwarf2_addr (gdbarch, lowpc + baseaddr); | |
14130 | SET_FIELD_PHYSADDR (call_site->target, lowpc); | |
14131 | } | |
96408a79 SA |
14132 | } |
14133 | } | |
14134 | else | |
b98664d3 | 14135 | complaint (_("DW_TAG_call_site DW_AT_call_target is neither " |
9d8780f0 SM |
14136 | "block nor reference, for DIE %s [in module %s]"), |
14137 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14138 | |
14139 | call_site->per_cu = cu->per_cu; | |
14140 | ||
14141 | for (child_die = die->child; | |
14142 | child_die && child_die->tag; | |
14143 | child_die = sibling_die (child_die)) | |
14144 | { | |
96408a79 | 14145 | struct call_site_parameter *parameter; |
1788b2d3 | 14146 | struct attribute *loc, *origin; |
96408a79 | 14147 | |
216f72a1 JK |
14148 | if (child_die->tag != DW_TAG_call_site_parameter |
14149 | && child_die->tag != DW_TAG_GNU_call_site_parameter) | |
96408a79 SA |
14150 | { |
14151 | /* Already printed the complaint above. */ | |
14152 | continue; | |
14153 | } | |
14154 | ||
14155 | gdb_assert (call_site->parameter_count < nparams); | |
14156 | parameter = &call_site->parameter[call_site->parameter_count]; | |
14157 | ||
1788b2d3 JK |
14158 | /* DW_AT_location specifies the register number or DW_AT_abstract_origin |
14159 | specifies DW_TAG_formal_parameter. Value of the data assumed for the | |
216f72a1 | 14160 | register is contained in DW_AT_call_value. */ |
96408a79 | 14161 | |
24c5c679 | 14162 | loc = dwarf2_attr (child_die, DW_AT_location, cu); |
216f72a1 JK |
14163 | origin = dwarf2_attr (child_die, DW_AT_call_parameter, cu); |
14164 | if (origin == NULL) | |
14165 | { | |
14166 | /* This was a pre-DWARF-5 GNU extension alias | |
14167 | for DW_AT_call_parameter. */ | |
14168 | origin = dwarf2_attr (child_die, DW_AT_abstract_origin, cu); | |
14169 | } | |
7771576e | 14170 | if (loc == NULL && origin != NULL && attr_form_is_ref (origin)) |
1788b2d3 | 14171 | { |
1788b2d3 | 14172 | parameter->kind = CALL_SITE_PARAMETER_PARAM_OFFSET; |
9c541725 PA |
14173 | |
14174 | sect_offset sect_off | |
14175 | = (sect_offset) dwarf2_get_ref_die_offset (origin); | |
14176 | if (!offset_in_cu_p (&cu->header, sect_off)) | |
d76b7dbc JK |
14177 | { |
14178 | /* As DW_OP_GNU_parameter_ref uses CU-relative offset this | |
14179 | binding can be done only inside one CU. Such referenced DIE | |
14180 | therefore cannot be even moved to DW_TAG_partial_unit. */ | |
b98664d3 | 14181 | complaint (_("DW_AT_call_parameter offset is not in CU for " |
9d8780f0 SM |
14182 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14183 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14184 | objfile_name (objfile)); |
d76b7dbc JK |
14185 | continue; |
14186 | } | |
9c541725 PA |
14187 | parameter->u.param_cu_off |
14188 | = (cu_offset) (sect_off - cu->header.sect_off); | |
1788b2d3 JK |
14189 | } |
14190 | else if (loc == NULL || origin != NULL || !attr_form_is_block (loc)) | |
96408a79 | 14191 | { |
b98664d3 | 14192 | complaint (_("No DW_FORM_block* DW_AT_location for " |
9d8780f0 SM |
14193 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14194 | sect_offset_str (child_die->sect_off), objfile_name (objfile)); | |
96408a79 SA |
14195 | continue; |
14196 | } | |
24c5c679 | 14197 | else |
96408a79 | 14198 | { |
24c5c679 JK |
14199 | parameter->u.dwarf_reg = dwarf_block_to_dwarf_reg |
14200 | (DW_BLOCK (loc)->data, &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size]); | |
14201 | if (parameter->u.dwarf_reg != -1) | |
14202 | parameter->kind = CALL_SITE_PARAMETER_DWARF_REG; | |
14203 | else if (dwarf_block_to_sp_offset (gdbarch, DW_BLOCK (loc)->data, | |
14204 | &DW_BLOCK (loc)->data[DW_BLOCK (loc)->size], | |
14205 | ¶meter->u.fb_offset)) | |
14206 | parameter->kind = CALL_SITE_PARAMETER_FB_OFFSET; | |
14207 | else | |
14208 | { | |
b98664d3 | 14209 | complaint (_("Only single DW_OP_reg or DW_OP_fbreg is supported " |
24c5c679 | 14210 | "for DW_FORM_block* DW_AT_location is supported for " |
9d8780f0 | 14211 | "DW_TAG_call_site child DIE %s " |
24c5c679 | 14212 | "[in module %s]"), |
9d8780f0 | 14213 | sect_offset_str (child_die->sect_off), |
9c541725 | 14214 | objfile_name (objfile)); |
24c5c679 JK |
14215 | continue; |
14216 | } | |
96408a79 SA |
14217 | } |
14218 | ||
216f72a1 JK |
14219 | attr = dwarf2_attr (child_die, DW_AT_call_value, cu); |
14220 | if (attr == NULL) | |
14221 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_value, cu); | |
96408a79 SA |
14222 | if (!attr_form_is_block (attr)) |
14223 | { | |
b98664d3 | 14224 | complaint (_("No DW_FORM_block* DW_AT_call_value for " |
9d8780f0 SM |
14225 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14226 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14227 | objfile_name (objfile)); |
96408a79 SA |
14228 | continue; |
14229 | } | |
14230 | parameter->value = DW_BLOCK (attr)->data; | |
14231 | parameter->value_size = DW_BLOCK (attr)->size; | |
14232 | ||
14233 | /* Parameters are not pre-cleared by memset above. */ | |
14234 | parameter->data_value = NULL; | |
14235 | parameter->data_value_size = 0; | |
14236 | call_site->parameter_count++; | |
14237 | ||
216f72a1 JK |
14238 | attr = dwarf2_attr (child_die, DW_AT_call_data_value, cu); |
14239 | if (attr == NULL) | |
14240 | attr = dwarf2_attr (child_die, DW_AT_GNU_call_site_data_value, cu); | |
96408a79 SA |
14241 | if (attr) |
14242 | { | |
14243 | if (!attr_form_is_block (attr)) | |
b98664d3 | 14244 | complaint (_("No DW_FORM_block* DW_AT_call_data_value for " |
9d8780f0 SM |
14245 | "DW_TAG_call_site child DIE %s [in module %s]"), |
14246 | sect_offset_str (child_die->sect_off), | |
9c541725 | 14247 | objfile_name (objfile)); |
96408a79 SA |
14248 | else |
14249 | { | |
14250 | parameter->data_value = DW_BLOCK (attr)->data; | |
14251 | parameter->data_value_size = DW_BLOCK (attr)->size; | |
14252 | } | |
14253 | } | |
14254 | } | |
14255 | } | |
14256 | ||
71a3c369 TT |
14257 | /* Helper function for read_variable. If DIE represents a virtual |
14258 | table, then return the type of the concrete object that is | |
14259 | associated with the virtual table. Otherwise, return NULL. */ | |
14260 | ||
14261 | static struct type * | |
14262 | rust_containing_type (struct die_info *die, struct dwarf2_cu *cu) | |
14263 | { | |
14264 | struct attribute *attr = dwarf2_attr (die, DW_AT_type, cu); | |
14265 | if (attr == NULL) | |
14266 | return NULL; | |
14267 | ||
14268 | /* Find the type DIE. */ | |
14269 | struct die_info *type_die = NULL; | |
14270 | struct dwarf2_cu *type_cu = cu; | |
14271 | ||
14272 | if (attr_form_is_ref (attr)) | |
14273 | type_die = follow_die_ref (die, attr, &type_cu); | |
14274 | if (type_die == NULL) | |
14275 | return NULL; | |
14276 | ||
14277 | if (dwarf2_attr (type_die, DW_AT_containing_type, type_cu) == NULL) | |
14278 | return NULL; | |
14279 | return die_containing_type (type_die, type_cu); | |
14280 | } | |
14281 | ||
14282 | /* Read a variable (DW_TAG_variable) DIE and create a new symbol. */ | |
14283 | ||
14284 | static void | |
14285 | read_variable (struct die_info *die, struct dwarf2_cu *cu) | |
14286 | { | |
14287 | struct rust_vtable_symbol *storage = NULL; | |
14288 | ||
14289 | if (cu->language == language_rust) | |
14290 | { | |
14291 | struct type *containing_type = rust_containing_type (die, cu); | |
14292 | ||
14293 | if (containing_type != NULL) | |
14294 | { | |
518817b3 | 14295 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
71a3c369 TT |
14296 | |
14297 | storage = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
14298 | struct rust_vtable_symbol); | |
14299 | initialize_objfile_symbol (storage); | |
14300 | storage->concrete_type = containing_type; | |
cf724bc9 | 14301 | storage->subclass = SYMBOL_RUST_VTABLE; |
71a3c369 TT |
14302 | } |
14303 | } | |
14304 | ||
e4a62c65 TV |
14305 | struct symbol *res = new_symbol (die, NULL, cu, storage); |
14306 | struct attribute *abstract_origin | |
14307 | = dwarf2_attr (die, DW_AT_abstract_origin, cu); | |
14308 | struct attribute *loc = dwarf2_attr (die, DW_AT_location, cu); | |
14309 | if (res == NULL && loc && abstract_origin) | |
14310 | { | |
14311 | /* We have a variable without a name, but with a location and an abstract | |
14312 | origin. This may be a concrete instance of an abstract variable | |
14313 | referenced from an DW_OP_GNU_variable_value, so save it to find it back | |
14314 | later. */ | |
14315 | struct dwarf2_cu *origin_cu = cu; | |
14316 | struct die_info *origin_die | |
14317 | = follow_die_ref (die, abstract_origin, &origin_cu); | |
14318 | dwarf2_per_objfile *dpo = cu->per_cu->dwarf2_per_objfile; | |
14319 | dpo->abstract_to_concrete[origin_die].push_back (die); | |
14320 | } | |
71a3c369 TT |
14321 | } |
14322 | ||
43988095 JK |
14323 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET |
14324 | reading .debug_rnglists. | |
14325 | Callback's type should be: | |
14326 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14327 | Return true if the attributes are present and valid, otherwise, | |
14328 | return false. */ | |
14329 | ||
14330 | template <typename Callback> | |
14331 | static bool | |
14332 | dwarf2_rnglists_process (unsigned offset, struct dwarf2_cu *cu, | |
14333 | Callback &&callback) | |
14334 | { | |
ed2dc618 | 14335 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14336 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14337 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43988095 | 14338 | bfd *obfd = objfile->obfd; |
43988095 JK |
14339 | /* Base address selection entry. */ |
14340 | CORE_ADDR base; | |
14341 | int found_base; | |
43988095 | 14342 | const gdb_byte *buffer; |
43988095 JK |
14343 | CORE_ADDR baseaddr; |
14344 | bool overflow = false; | |
14345 | ||
14346 | found_base = cu->base_known; | |
14347 | base = cu->base_address; | |
14348 | ||
14349 | dwarf2_read_section (objfile, &dwarf2_per_objfile->rnglists); | |
14350 | if (offset >= dwarf2_per_objfile->rnglists.size) | |
14351 | { | |
b98664d3 | 14352 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43988095 JK |
14353 | offset); |
14354 | return false; | |
14355 | } | |
14356 | buffer = dwarf2_per_objfile->rnglists.buffer + offset; | |
14357 | ||
14358 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
14359 | ||
14360 | while (1) | |
14361 | { | |
7814882a JK |
14362 | /* Initialize it due to a false compiler warning. */ |
14363 | CORE_ADDR range_beginning = 0, range_end = 0; | |
43988095 JK |
14364 | const gdb_byte *buf_end = (dwarf2_per_objfile->rnglists.buffer |
14365 | + dwarf2_per_objfile->rnglists.size); | |
14366 | unsigned int bytes_read; | |
14367 | ||
14368 | if (buffer == buf_end) | |
14369 | { | |
14370 | overflow = true; | |
14371 | break; | |
14372 | } | |
14373 | const auto rlet = static_cast<enum dwarf_range_list_entry>(*buffer++); | |
14374 | switch (rlet) | |
14375 | { | |
14376 | case DW_RLE_end_of_list: | |
14377 | break; | |
14378 | case DW_RLE_base_address: | |
14379 | if (buffer + cu->header.addr_size > buf_end) | |
14380 | { | |
14381 | overflow = true; | |
14382 | break; | |
14383 | } | |
14384 | base = read_address (obfd, buffer, cu, &bytes_read); | |
14385 | found_base = 1; | |
14386 | buffer += bytes_read; | |
14387 | break; | |
14388 | case DW_RLE_start_length: | |
14389 | if (buffer + cu->header.addr_size > buf_end) | |
14390 | { | |
14391 | overflow = true; | |
14392 | break; | |
14393 | } | |
14394 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14395 | buffer += bytes_read; | |
14396 | range_end = (range_beginning | |
14397 | + read_unsigned_leb128 (obfd, buffer, &bytes_read)); | |
14398 | buffer += bytes_read; | |
14399 | if (buffer > buf_end) | |
14400 | { | |
14401 | overflow = true; | |
14402 | break; | |
14403 | } | |
14404 | break; | |
14405 | case DW_RLE_offset_pair: | |
14406 | range_beginning = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14407 | buffer += bytes_read; | |
14408 | if (buffer > buf_end) | |
14409 | { | |
14410 | overflow = true; | |
14411 | break; | |
14412 | } | |
14413 | range_end = read_unsigned_leb128 (obfd, buffer, &bytes_read); | |
14414 | buffer += bytes_read; | |
14415 | if (buffer > buf_end) | |
14416 | { | |
14417 | overflow = true; | |
14418 | break; | |
14419 | } | |
14420 | break; | |
14421 | case DW_RLE_start_end: | |
14422 | if (buffer + 2 * cu->header.addr_size > buf_end) | |
14423 | { | |
14424 | overflow = true; | |
14425 | break; | |
14426 | } | |
14427 | range_beginning = read_address (obfd, buffer, cu, &bytes_read); | |
14428 | buffer += bytes_read; | |
14429 | range_end = read_address (obfd, buffer, cu, &bytes_read); | |
14430 | buffer += bytes_read; | |
14431 | break; | |
14432 | default: | |
b98664d3 | 14433 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14434 | return false; |
14435 | } | |
14436 | if (rlet == DW_RLE_end_of_list || overflow) | |
14437 | break; | |
14438 | if (rlet == DW_RLE_base_address) | |
14439 | continue; | |
14440 | ||
14441 | if (!found_base) | |
14442 | { | |
14443 | /* We have no valid base address for the ranges | |
14444 | data. */ | |
b98664d3 | 14445 | complaint (_("Invalid .debug_rnglists data (no base address)")); |
43988095 JK |
14446 | return false; |
14447 | } | |
14448 | ||
14449 | if (range_beginning > range_end) | |
14450 | { | |
14451 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14452 | complaint (_("Invalid .debug_rnglists data (inverted range)")); |
43988095 JK |
14453 | return false; |
14454 | } | |
14455 | ||
14456 | /* Empty range entries have no effect. */ | |
14457 | if (range_beginning == range_end) | |
14458 | continue; | |
14459 | ||
14460 | range_beginning += base; | |
14461 | range_end += base; | |
14462 | ||
14463 | /* A not-uncommon case of bad debug info. | |
14464 | Don't pollute the addrmap with bad data. */ | |
14465 | if (range_beginning + baseaddr == 0 | |
14466 | && !dwarf2_per_objfile->has_section_at_zero) | |
14467 | { | |
b98664d3 | 14468 | complaint (_(".debug_rnglists entry has start address of zero" |
43988095 JK |
14469 | " [in module %s]"), objfile_name (objfile)); |
14470 | continue; | |
14471 | } | |
14472 | ||
14473 | callback (range_beginning, range_end); | |
14474 | } | |
14475 | ||
14476 | if (overflow) | |
14477 | { | |
b98664d3 | 14478 | complaint (_("Offset %d is not terminated " |
43988095 JK |
14479 | "for DW_AT_ranges attribute"), |
14480 | offset); | |
14481 | return false; | |
14482 | } | |
14483 | ||
14484 | return true; | |
14485 | } | |
14486 | ||
14487 | /* Call CALLBACK from DW_AT_ranges attribute value OFFSET reading .debug_ranges. | |
14488 | Callback's type should be: | |
14489 | void (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
5f46c5a5 | 14490 | Return 1 if the attributes are present and valid, otherwise, return 0. */ |
43039443 | 14491 | |
43988095 | 14492 | template <typename Callback> |
43039443 | 14493 | static int |
5f46c5a5 | 14494 | dwarf2_ranges_process (unsigned offset, struct dwarf2_cu *cu, |
43988095 | 14495 | Callback &&callback) |
43039443 | 14496 | { |
ed2dc618 | 14497 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 14498 | = cu->per_cu->dwarf2_per_objfile; |
ed2dc618 | 14499 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
43039443 JK |
14500 | struct comp_unit_head *cu_header = &cu->header; |
14501 | bfd *obfd = objfile->obfd; | |
14502 | unsigned int addr_size = cu_header->addr_size; | |
14503 | CORE_ADDR mask = ~(~(CORE_ADDR)1 << (addr_size * 8 - 1)); | |
14504 | /* Base address selection entry. */ | |
14505 | CORE_ADDR base; | |
14506 | int found_base; | |
14507 | unsigned int dummy; | |
d521ce57 | 14508 | const gdb_byte *buffer; |
ff013f42 | 14509 | CORE_ADDR baseaddr; |
43039443 | 14510 | |
43988095 JK |
14511 | if (cu_header->version >= 5) |
14512 | return dwarf2_rnglists_process (offset, cu, callback); | |
14513 | ||
d00adf39 DE |
14514 | found_base = cu->base_known; |
14515 | base = cu->base_address; | |
43039443 | 14516 | |
be391dca | 14517 | dwarf2_read_section (objfile, &dwarf2_per_objfile->ranges); |
dce234bc | 14518 | if (offset >= dwarf2_per_objfile->ranges.size) |
43039443 | 14519 | { |
b98664d3 | 14520 | complaint (_("Offset %d out of bounds for DW_AT_ranges attribute"), |
43039443 JK |
14521 | offset); |
14522 | return 0; | |
14523 | } | |
dce234bc | 14524 | buffer = dwarf2_per_objfile->ranges.buffer + offset; |
43039443 | 14525 | |
e7030f15 | 14526 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); |
ff013f42 | 14527 | |
43039443 JK |
14528 | while (1) |
14529 | { | |
14530 | CORE_ADDR range_beginning, range_end; | |
14531 | ||
14532 | range_beginning = read_address (obfd, buffer, cu, &dummy); | |
14533 | buffer += addr_size; | |
14534 | range_end = read_address (obfd, buffer, cu, &dummy); | |
14535 | buffer += addr_size; | |
14536 | offset += 2 * addr_size; | |
14537 | ||
14538 | /* An end of list marker is a pair of zero addresses. */ | |
14539 | if (range_beginning == 0 && range_end == 0) | |
14540 | /* Found the end of list entry. */ | |
14541 | break; | |
14542 | ||
14543 | /* Each base address selection entry is a pair of 2 values. | |
14544 | The first is the largest possible address, the second is | |
14545 | the base address. Check for a base address here. */ | |
14546 | if ((range_beginning & mask) == mask) | |
14547 | { | |
28d2bfb9 AB |
14548 | /* If we found the largest possible address, then we already |
14549 | have the base address in range_end. */ | |
14550 | base = range_end; | |
43039443 JK |
14551 | found_base = 1; |
14552 | continue; | |
14553 | } | |
14554 | ||
14555 | if (!found_base) | |
14556 | { | |
14557 | /* We have no valid base address for the ranges | |
14558 | data. */ | |
b98664d3 | 14559 | complaint (_("Invalid .debug_ranges data (no base address)")); |
43039443 JK |
14560 | return 0; |
14561 | } | |
14562 | ||
9277c30c UW |
14563 | if (range_beginning > range_end) |
14564 | { | |
14565 | /* Inverted range entries are invalid. */ | |
b98664d3 | 14566 | complaint (_("Invalid .debug_ranges data (inverted range)")); |
9277c30c UW |
14567 | return 0; |
14568 | } | |
14569 | ||
14570 | /* Empty range entries have no effect. */ | |
14571 | if (range_beginning == range_end) | |
14572 | continue; | |
14573 | ||
43039443 JK |
14574 | range_beginning += base; |
14575 | range_end += base; | |
14576 | ||
01093045 DE |
14577 | /* A not-uncommon case of bad debug info. |
14578 | Don't pollute the addrmap with bad data. */ | |
14579 | if (range_beginning + baseaddr == 0 | |
14580 | && !dwarf2_per_objfile->has_section_at_zero) | |
14581 | { | |
b98664d3 | 14582 | complaint (_(".debug_ranges entry has start address of zero" |
4262abfb | 14583 | " [in module %s]"), objfile_name (objfile)); |
01093045 DE |
14584 | continue; |
14585 | } | |
14586 | ||
5f46c5a5 JK |
14587 | callback (range_beginning, range_end); |
14588 | } | |
14589 | ||
14590 | return 1; | |
14591 | } | |
14592 | ||
14593 | /* Get low and high pc attributes from DW_AT_ranges attribute value OFFSET. | |
14594 | Return 1 if the attributes are present and valid, otherwise, return 0. | |
14595 | If RANGES_PST is not NULL we should setup `objfile->psymtabs_addrmap'. */ | |
14596 | ||
14597 | static int | |
14598 | dwarf2_ranges_read (unsigned offset, CORE_ADDR *low_return, | |
14599 | CORE_ADDR *high_return, struct dwarf2_cu *cu, | |
14600 | struct partial_symtab *ranges_pst) | |
14601 | { | |
518817b3 | 14602 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5f46c5a5 JK |
14603 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
14604 | const CORE_ADDR baseaddr = ANOFFSET (objfile->section_offsets, | |
14605 | SECT_OFF_TEXT (objfile)); | |
14606 | int low_set = 0; | |
14607 | CORE_ADDR low = 0; | |
14608 | CORE_ADDR high = 0; | |
14609 | int retval; | |
14610 | ||
14611 | retval = dwarf2_ranges_process (offset, cu, | |
14612 | [&] (CORE_ADDR range_beginning, CORE_ADDR range_end) | |
14613 | { | |
9277c30c | 14614 | if (ranges_pst != NULL) |
3e29f34a MR |
14615 | { |
14616 | CORE_ADDR lowpc; | |
14617 | CORE_ADDR highpc; | |
14618 | ||
79748972 TT |
14619 | lowpc = (gdbarch_adjust_dwarf2_addr (gdbarch, |
14620 | range_beginning + baseaddr) | |
14621 | - baseaddr); | |
14622 | highpc = (gdbarch_adjust_dwarf2_addr (gdbarch, | |
14623 | range_end + baseaddr) | |
14624 | - baseaddr); | |
d320c2b5 TT |
14625 | addrmap_set_empty (objfile->partial_symtabs->psymtabs_addrmap, |
14626 | lowpc, highpc - 1, ranges_pst); | |
3e29f34a | 14627 | } |
ff013f42 | 14628 | |
43039443 JK |
14629 | /* FIXME: This is recording everything as a low-high |
14630 | segment of consecutive addresses. We should have a | |
14631 | data structure for discontiguous block ranges | |
14632 | instead. */ | |
14633 | if (! low_set) | |
14634 | { | |
14635 | low = range_beginning; | |
14636 | high = range_end; | |
14637 | low_set = 1; | |
14638 | } | |
14639 | else | |
14640 | { | |
14641 | if (range_beginning < low) | |
14642 | low = range_beginning; | |
14643 | if (range_end > high) | |
14644 | high = range_end; | |
14645 | } | |
5f46c5a5 JK |
14646 | }); |
14647 | if (!retval) | |
14648 | return 0; | |
43039443 JK |
14649 | |
14650 | if (! low_set) | |
14651 | /* If the first entry is an end-of-list marker, the range | |
14652 | describes an empty scope, i.e. no instructions. */ | |
14653 | return 0; | |
14654 | ||
14655 | if (low_return) | |
14656 | *low_return = low; | |
14657 | if (high_return) | |
14658 | *high_return = high; | |
14659 | return 1; | |
14660 | } | |
14661 | ||
3a2b436a JK |
14662 | /* Get low and high pc attributes from a die. See enum pc_bounds_kind |
14663 | definition for the return value. *LOWPC and *HIGHPC are set iff | |
e385593e | 14664 | neither PC_BOUNDS_NOT_PRESENT nor PC_BOUNDS_INVALID are returned. */ |
380bca97 | 14665 | |
3a2b436a | 14666 | static enum pc_bounds_kind |
af34e669 | 14667 | dwarf2_get_pc_bounds (struct die_info *die, CORE_ADDR *lowpc, |
d85a05f0 DJ |
14668 | CORE_ADDR *highpc, struct dwarf2_cu *cu, |
14669 | struct partial_symtab *pst) | |
c906108c | 14670 | { |
518817b3 SM |
14671 | struct dwarf2_per_objfile *dwarf2_per_objfile |
14672 | = cu->per_cu->dwarf2_per_objfile; | |
c906108c | 14673 | struct attribute *attr; |
91da1414 | 14674 | struct attribute *attr_high; |
af34e669 DJ |
14675 | CORE_ADDR low = 0; |
14676 | CORE_ADDR high = 0; | |
e385593e | 14677 | enum pc_bounds_kind ret; |
c906108c | 14678 | |
91da1414 MW |
14679 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14680 | if (attr_high) | |
af34e669 | 14681 | { |
e142c38c | 14682 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
af34e669 | 14683 | if (attr) |
91da1414 | 14684 | { |
31aa7e4e JB |
14685 | low = attr_value_as_address (attr); |
14686 | high = attr_value_as_address (attr_high); | |
14687 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14688 | high += low; | |
91da1414 | 14689 | } |
af34e669 DJ |
14690 | else |
14691 | /* Found high w/o low attribute. */ | |
e385593e | 14692 | return PC_BOUNDS_INVALID; |
af34e669 DJ |
14693 | |
14694 | /* Found consecutive range of addresses. */ | |
3a2b436a | 14695 | ret = PC_BOUNDS_HIGH_LOW; |
af34e669 | 14696 | } |
c906108c | 14697 | else |
af34e669 | 14698 | { |
e142c38c | 14699 | attr = dwarf2_attr (die, DW_AT_ranges, cu); |
af34e669 DJ |
14700 | if (attr != NULL) |
14701 | { | |
ab435259 DE |
14702 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14703 | We take advantage of the fact that DW_AT_ranges does not appear | |
14704 | in DW_TAG_compile_unit of DWO files. */ | |
14705 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
14706 | unsigned int ranges_offset = (DW_UNSND (attr) | |
14707 | + (need_ranges_base | |
14708 | ? cu->ranges_base | |
14709 | : 0)); | |
2e3cf129 | 14710 | |
af34e669 | 14711 | /* Value of the DW_AT_ranges attribute is the offset in the |
a604369a | 14712 | .debug_ranges section. */ |
2e3cf129 | 14713 | if (!dwarf2_ranges_read (ranges_offset, &low, &high, cu, pst)) |
e385593e | 14714 | return PC_BOUNDS_INVALID; |
43039443 | 14715 | /* Found discontinuous range of addresses. */ |
3a2b436a | 14716 | ret = PC_BOUNDS_RANGES; |
af34e669 | 14717 | } |
e385593e JK |
14718 | else |
14719 | return PC_BOUNDS_NOT_PRESENT; | |
af34e669 | 14720 | } |
c906108c | 14721 | |
48fbe735 | 14722 | /* partial_die_info::read has also the strict LOW < HIGH requirement. */ |
9373cf26 | 14723 | if (high <= low) |
e385593e | 14724 | return PC_BOUNDS_INVALID; |
c906108c SS |
14725 | |
14726 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
14727 | eliminate duplicate copies of functions and vtables and such. | |
14728 | The linker will arbitrarily choose one and discard the others. | |
14729 | The AT_*_pc values for such functions refer to local labels in | |
14730 | these sections. If the section from that file was discarded, the | |
14731 | labels are not in the output, so the relocs get a value of 0. | |
14732 | If this is a discarded function, mark the pc bounds as invalid, | |
14733 | so that GDB will ignore it. */ | |
72dca2f5 | 14734 | if (low == 0 && !dwarf2_per_objfile->has_section_at_zero) |
e385593e | 14735 | return PC_BOUNDS_INVALID; |
c906108c SS |
14736 | |
14737 | *lowpc = low; | |
96408a79 SA |
14738 | if (highpc) |
14739 | *highpc = high; | |
af34e669 | 14740 | return ret; |
c906108c SS |
14741 | } |
14742 | ||
b084d499 JB |
14743 | /* Assuming that DIE represents a subprogram DIE or a lexical block, get |
14744 | its low and high PC addresses. Do nothing if these addresses could not | |
14745 | be determined. Otherwise, set LOWPC to the low address if it is smaller, | |
14746 | and HIGHPC to the high address if greater than HIGHPC. */ | |
14747 | ||
14748 | static void | |
14749 | dwarf2_get_subprogram_pc_bounds (struct die_info *die, | |
14750 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14751 | struct dwarf2_cu *cu) | |
14752 | { | |
14753 | CORE_ADDR low, high; | |
14754 | struct die_info *child = die->child; | |
14755 | ||
e385593e | 14756 | if (dwarf2_get_pc_bounds (die, &low, &high, cu, NULL) >= PC_BOUNDS_RANGES) |
b084d499 | 14757 | { |
325fac50 PA |
14758 | *lowpc = std::min (*lowpc, low); |
14759 | *highpc = std::max (*highpc, high); | |
b084d499 JB |
14760 | } |
14761 | ||
14762 | /* If the language does not allow nested subprograms (either inside | |
14763 | subprograms or lexical blocks), we're done. */ | |
14764 | if (cu->language != language_ada) | |
14765 | return; | |
6e70227d | 14766 | |
b084d499 JB |
14767 | /* Check all the children of the given DIE. If it contains nested |
14768 | subprograms, then check their pc bounds. Likewise, we need to | |
14769 | check lexical blocks as well, as they may also contain subprogram | |
14770 | definitions. */ | |
14771 | while (child && child->tag) | |
14772 | { | |
14773 | if (child->tag == DW_TAG_subprogram | |
14774 | || child->tag == DW_TAG_lexical_block) | |
14775 | dwarf2_get_subprogram_pc_bounds (child, lowpc, highpc, cu); | |
14776 | child = sibling_die (child); | |
14777 | } | |
14778 | } | |
14779 | ||
fae299cd DC |
14780 | /* Get the low and high pc's represented by the scope DIE, and store |
14781 | them in *LOWPC and *HIGHPC. If the correct values can't be | |
14782 | determined, set *LOWPC to -1 and *HIGHPC to 0. */ | |
14783 | ||
14784 | static void | |
14785 | get_scope_pc_bounds (struct die_info *die, | |
14786 | CORE_ADDR *lowpc, CORE_ADDR *highpc, | |
14787 | struct dwarf2_cu *cu) | |
14788 | { | |
14789 | CORE_ADDR best_low = (CORE_ADDR) -1; | |
14790 | CORE_ADDR best_high = (CORE_ADDR) 0; | |
14791 | CORE_ADDR current_low, current_high; | |
14792 | ||
3a2b436a | 14793 | if (dwarf2_get_pc_bounds (die, ¤t_low, ¤t_high, cu, NULL) |
e385593e | 14794 | >= PC_BOUNDS_RANGES) |
fae299cd DC |
14795 | { |
14796 | best_low = current_low; | |
14797 | best_high = current_high; | |
14798 | } | |
14799 | else | |
14800 | { | |
14801 | struct die_info *child = die->child; | |
14802 | ||
14803 | while (child && child->tag) | |
14804 | { | |
14805 | switch (child->tag) { | |
14806 | case DW_TAG_subprogram: | |
b084d499 | 14807 | dwarf2_get_subprogram_pc_bounds (child, &best_low, &best_high, cu); |
fae299cd DC |
14808 | break; |
14809 | case DW_TAG_namespace: | |
f55ee35c | 14810 | case DW_TAG_module: |
fae299cd DC |
14811 | /* FIXME: carlton/2004-01-16: Should we do this for |
14812 | DW_TAG_class_type/DW_TAG_structure_type, too? I think | |
14813 | that current GCC's always emit the DIEs corresponding | |
14814 | to definitions of methods of classes as children of a | |
14815 | DW_TAG_compile_unit or DW_TAG_namespace (as opposed to | |
14816 | the DIEs giving the declarations, which could be | |
14817 | anywhere). But I don't see any reason why the | |
14818 | standards says that they have to be there. */ | |
14819 | get_scope_pc_bounds (child, ¤t_low, ¤t_high, cu); | |
14820 | ||
14821 | if (current_low != ((CORE_ADDR) -1)) | |
14822 | { | |
325fac50 PA |
14823 | best_low = std::min (best_low, current_low); |
14824 | best_high = std::max (best_high, current_high); | |
fae299cd DC |
14825 | } |
14826 | break; | |
14827 | default: | |
0963b4bd | 14828 | /* Ignore. */ |
fae299cd DC |
14829 | break; |
14830 | } | |
14831 | ||
14832 | child = sibling_die (child); | |
14833 | } | |
14834 | } | |
14835 | ||
14836 | *lowpc = best_low; | |
14837 | *highpc = best_high; | |
14838 | } | |
14839 | ||
801e3a5b JB |
14840 | /* Record the address ranges for BLOCK, offset by BASEADDR, as given |
14841 | in DIE. */ | |
380bca97 | 14842 | |
801e3a5b JB |
14843 | static void |
14844 | dwarf2_record_block_ranges (struct die_info *die, struct block *block, | |
14845 | CORE_ADDR baseaddr, struct dwarf2_cu *cu) | |
14846 | { | |
518817b3 | 14847 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3e29f34a | 14848 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
801e3a5b | 14849 | struct attribute *attr; |
91da1414 | 14850 | struct attribute *attr_high; |
801e3a5b | 14851 | |
91da1414 MW |
14852 | attr_high = dwarf2_attr (die, DW_AT_high_pc, cu); |
14853 | if (attr_high) | |
801e3a5b | 14854 | { |
801e3a5b JB |
14855 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
14856 | if (attr) | |
14857 | { | |
31aa7e4e JB |
14858 | CORE_ADDR low = attr_value_as_address (attr); |
14859 | CORE_ADDR high = attr_value_as_address (attr_high); | |
14860 | ||
14861 | if (cu->header.version >= 4 && attr_form_is_constant (attr_high)) | |
14862 | high += low; | |
9a619af0 | 14863 | |
3e29f34a MR |
14864 | low = gdbarch_adjust_dwarf2_addr (gdbarch, low + baseaddr); |
14865 | high = gdbarch_adjust_dwarf2_addr (gdbarch, high + baseaddr); | |
c24bdb02 | 14866 | cu->get_builder ()->record_block_range (block, low, high - 1); |
801e3a5b JB |
14867 | } |
14868 | } | |
14869 | ||
14870 | attr = dwarf2_attr (die, DW_AT_ranges, cu); | |
14871 | if (attr) | |
14872 | { | |
ab435259 DE |
14873 | /* DW_AT_ranges_base does not apply to DIEs from the DWO skeleton. |
14874 | We take advantage of the fact that DW_AT_ranges does not appear | |
14875 | in DW_TAG_compile_unit of DWO files. */ | |
14876 | int need_ranges_base = die->tag != DW_TAG_compile_unit; | |
801e3a5b JB |
14877 | |
14878 | /* The value of the DW_AT_ranges attribute is the offset of the | |
14879 | address range list in the .debug_ranges section. */ | |
ab435259 DE |
14880 | unsigned long offset = (DW_UNSND (attr) |
14881 | + (need_ranges_base ? cu->ranges_base : 0)); | |
801e3a5b | 14882 | |
2d5f09ec | 14883 | std::vector<blockrange> blockvec; |
5f46c5a5 JK |
14884 | dwarf2_ranges_process (offset, cu, |
14885 | [&] (CORE_ADDR start, CORE_ADDR end) | |
14886 | { | |
58fdfd2c JK |
14887 | start += baseaddr; |
14888 | end += baseaddr; | |
5f46c5a5 JK |
14889 | start = gdbarch_adjust_dwarf2_addr (gdbarch, start); |
14890 | end = gdbarch_adjust_dwarf2_addr (gdbarch, end); | |
c24bdb02 | 14891 | cu->get_builder ()->record_block_range (block, start, end - 1); |
2d5f09ec | 14892 | blockvec.emplace_back (start, end); |
5f46c5a5 | 14893 | }); |
2d5f09ec KB |
14894 | |
14895 | BLOCK_RANGES(block) = make_blockranges (objfile, blockvec); | |
801e3a5b JB |
14896 | } |
14897 | } | |
14898 | ||
685b1105 JK |
14899 | /* Check whether the producer field indicates either of GCC < 4.6, or the |
14900 | Intel C/C++ compiler, and cache the result in CU. */ | |
60d5a603 | 14901 | |
685b1105 JK |
14902 | static void |
14903 | check_producer (struct dwarf2_cu *cu) | |
60d5a603 | 14904 | { |
38360086 | 14905 | int major, minor; |
60d5a603 JK |
14906 | |
14907 | if (cu->producer == NULL) | |
14908 | { | |
14909 | /* For unknown compilers expect their behavior is DWARF version | |
14910 | compliant. | |
14911 | ||
14912 | GCC started to support .debug_types sections by -gdwarf-4 since | |
14913 | gcc-4.5.x. As the .debug_types sections are missing DW_AT_producer | |
14914 | for their space efficiency GDB cannot workaround gcc-4.5.x -gdwarf-4 | |
14915 | combination. gcc-4.5.x -gdwarf-4 binaries have DW_AT_accessibility | |
14916 | interpreted incorrectly by GDB now - GCC PR debug/48229. */ | |
60d5a603 | 14917 | } |
b1ffba5a | 14918 | else if (producer_is_gcc (cu->producer, &major, &minor)) |
60d5a603 | 14919 | { |
38360086 MW |
14920 | cu->producer_is_gxx_lt_4_6 = major < 4 || (major == 4 && minor < 6); |
14921 | cu->producer_is_gcc_lt_4_3 = major < 4 || (major == 4 && minor < 3); | |
685b1105 | 14922 | } |
5230b05a | 14923 | else if (producer_is_icc (cu->producer, &major, &minor)) |
eb77c9df AB |
14924 | { |
14925 | cu->producer_is_icc = true; | |
14926 | cu->producer_is_icc_lt_14 = major < 14; | |
14927 | } | |
c258c396 JD |
14928 | else if (startswith (cu->producer, "CodeWarrior S12/L-ISA")) |
14929 | cu->producer_is_codewarrior = true; | |
685b1105 JK |
14930 | else |
14931 | { | |
14932 | /* For other non-GCC compilers, expect their behavior is DWARF version | |
14933 | compliant. */ | |
60d5a603 JK |
14934 | } |
14935 | ||
9068261f | 14936 | cu->checked_producer = true; |
685b1105 | 14937 | } |
ba919b58 | 14938 | |
685b1105 JK |
14939 | /* Check for GCC PR debug/45124 fix which is not present in any G++ version up |
14940 | to 4.5.any while it is present already in G++ 4.6.0 - the PR has been fixed | |
14941 | during 4.6.0 experimental. */ | |
14942 | ||
9068261f | 14943 | static bool |
685b1105 JK |
14944 | producer_is_gxx_lt_4_6 (struct dwarf2_cu *cu) |
14945 | { | |
14946 | if (!cu->checked_producer) | |
14947 | check_producer (cu); | |
14948 | ||
14949 | return cu->producer_is_gxx_lt_4_6; | |
60d5a603 JK |
14950 | } |
14951 | ||
c258c396 JD |
14952 | |
14953 | /* Codewarrior (at least as of version 5.0.40) generates dwarf line information | |
14954 | with incorrect is_stmt attributes. */ | |
14955 | ||
14956 | static bool | |
14957 | producer_is_codewarrior (struct dwarf2_cu *cu) | |
14958 | { | |
14959 | if (!cu->checked_producer) | |
14960 | check_producer (cu); | |
14961 | ||
14962 | return cu->producer_is_codewarrior; | |
14963 | } | |
14964 | ||
60d5a603 JK |
14965 | /* Return the default accessibility type if it is not overriden by |
14966 | DW_AT_accessibility. */ | |
14967 | ||
14968 | static enum dwarf_access_attribute | |
14969 | dwarf2_default_access_attribute (struct die_info *die, struct dwarf2_cu *cu) | |
14970 | { | |
14971 | if (cu->header.version < 3 || producer_is_gxx_lt_4_6 (cu)) | |
14972 | { | |
14973 | /* The default DWARF 2 accessibility for members is public, the default | |
14974 | accessibility for inheritance is private. */ | |
14975 | ||
14976 | if (die->tag != DW_TAG_inheritance) | |
14977 | return DW_ACCESS_public; | |
14978 | else | |
14979 | return DW_ACCESS_private; | |
14980 | } | |
14981 | else | |
14982 | { | |
14983 | /* DWARF 3+ defines the default accessibility a different way. The same | |
14984 | rules apply now for DW_TAG_inheritance as for the members and it only | |
14985 | depends on the container kind. */ | |
14986 | ||
14987 | if (die->parent->tag == DW_TAG_class_type) | |
14988 | return DW_ACCESS_private; | |
14989 | else | |
14990 | return DW_ACCESS_public; | |
14991 | } | |
14992 | } | |
14993 | ||
74ac6d43 TT |
14994 | /* Look for DW_AT_data_member_location. Set *OFFSET to the byte |
14995 | offset. If the attribute was not found return 0, otherwise return | |
14996 | 1. If it was found but could not properly be handled, set *OFFSET | |
14997 | to 0. */ | |
14998 | ||
14999 | static int | |
15000 | handle_data_member_location (struct die_info *die, struct dwarf2_cu *cu, | |
15001 | LONGEST *offset) | |
15002 | { | |
15003 | struct attribute *attr; | |
15004 | ||
15005 | attr = dwarf2_attr (die, DW_AT_data_member_location, cu); | |
15006 | if (attr != NULL) | |
15007 | { | |
15008 | *offset = 0; | |
15009 | ||
15010 | /* Note that we do not check for a section offset first here. | |
15011 | This is because DW_AT_data_member_location is new in DWARF 4, | |
15012 | so if we see it, we can assume that a constant form is really | |
15013 | a constant and not a section offset. */ | |
15014 | if (attr_form_is_constant (attr)) | |
15015 | *offset = dwarf2_get_attr_constant_value (attr, 0); | |
15016 | else if (attr_form_is_section_offset (attr)) | |
15017 | dwarf2_complex_location_expr_complaint (); | |
15018 | else if (attr_form_is_block (attr)) | |
15019 | *offset = decode_locdesc (DW_BLOCK (attr), cu); | |
15020 | else | |
15021 | dwarf2_complex_location_expr_complaint (); | |
15022 | ||
15023 | return 1; | |
15024 | } | |
15025 | ||
15026 | return 0; | |
15027 | } | |
15028 | ||
c906108c SS |
15029 | /* Add an aggregate field to the field list. */ |
15030 | ||
15031 | static void | |
107d2387 | 15032 | dwarf2_add_field (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15033 | struct dwarf2_cu *cu) |
6e70227d | 15034 | { |
518817b3 | 15035 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
5e2b427d | 15036 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
15037 | struct nextfield *new_field; |
15038 | struct attribute *attr; | |
15039 | struct field *fp; | |
15d034d0 | 15040 | const char *fieldname = ""; |
c906108c | 15041 | |
7d0ccb61 DJ |
15042 | if (die->tag == DW_TAG_inheritance) |
15043 | { | |
be2daae6 TT |
15044 | fip->baseclasses.emplace_back (); |
15045 | new_field = &fip->baseclasses.back (); | |
7d0ccb61 DJ |
15046 | } |
15047 | else | |
15048 | { | |
be2daae6 TT |
15049 | fip->fields.emplace_back (); |
15050 | new_field = &fip->fields.back (); | |
7d0ccb61 | 15051 | } |
be2daae6 | 15052 | |
c906108c SS |
15053 | fip->nfields++; |
15054 | ||
e142c38c | 15055 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c SS |
15056 | if (attr) |
15057 | new_field->accessibility = DW_UNSND (attr); | |
60d5a603 JK |
15058 | else |
15059 | new_field->accessibility = dwarf2_default_access_attribute (die, cu); | |
c906108c SS |
15060 | if (new_field->accessibility != DW_ACCESS_public) |
15061 | fip->non_public_fields = 1; | |
60d5a603 | 15062 | |
e142c38c | 15063 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); |
c906108c SS |
15064 | if (attr) |
15065 | new_field->virtuality = DW_UNSND (attr); | |
60d5a603 JK |
15066 | else |
15067 | new_field->virtuality = DW_VIRTUALITY_none; | |
c906108c SS |
15068 | |
15069 | fp = &new_field->field; | |
a9a9bd0f | 15070 | |
e142c38c | 15071 | if (die->tag == DW_TAG_member && ! die_is_declaration (die, cu)) |
c906108c | 15072 | { |
74ac6d43 TT |
15073 | LONGEST offset; |
15074 | ||
a9a9bd0f | 15075 | /* Data member other than a C++ static data member. */ |
6e70227d | 15076 | |
c906108c | 15077 | /* Get type of field. */ |
e7c27a73 | 15078 | fp->type = die_type (die, cu); |
c906108c | 15079 | |
d6a843b5 | 15080 | SET_FIELD_BITPOS (*fp, 0); |
01ad7f36 | 15081 | |
c906108c | 15082 | /* Get bit size of field (zero if none). */ |
e142c38c | 15083 | attr = dwarf2_attr (die, DW_AT_bit_size, cu); |
c906108c SS |
15084 | if (attr) |
15085 | { | |
15086 | FIELD_BITSIZE (*fp) = DW_UNSND (attr); | |
15087 | } | |
15088 | else | |
15089 | { | |
15090 | FIELD_BITSIZE (*fp) = 0; | |
15091 | } | |
15092 | ||
15093 | /* Get bit offset of field. */ | |
74ac6d43 TT |
15094 | if (handle_data_member_location (die, cu, &offset)) |
15095 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
e142c38c | 15096 | attr = dwarf2_attr (die, DW_AT_bit_offset, cu); |
c906108c SS |
15097 | if (attr) |
15098 | { | |
5e2b427d | 15099 | if (gdbarch_bits_big_endian (gdbarch)) |
c906108c SS |
15100 | { |
15101 | /* For big endian bits, the DW_AT_bit_offset gives the | |
c5aa993b JM |
15102 | additional bit offset from the MSB of the containing |
15103 | anonymous object to the MSB of the field. We don't | |
15104 | have to do anything special since we don't need to | |
15105 | know the size of the anonymous object. */ | |
f41f5e61 | 15106 | SET_FIELD_BITPOS (*fp, FIELD_BITPOS (*fp) + DW_UNSND (attr)); |
c906108c SS |
15107 | } |
15108 | else | |
15109 | { | |
15110 | /* For little endian bits, compute the bit offset to the | |
c5aa993b JM |
15111 | MSB of the anonymous object, subtract off the number of |
15112 | bits from the MSB of the field to the MSB of the | |
15113 | object, and then subtract off the number of bits of | |
15114 | the field itself. The result is the bit offset of | |
15115 | the LSB of the field. */ | |
c906108c SS |
15116 | int anonymous_size; |
15117 | int bit_offset = DW_UNSND (attr); | |
15118 | ||
e142c38c | 15119 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15120 | if (attr) |
15121 | { | |
15122 | /* The size of the anonymous object containing | |
15123 | the bit field is explicit, so use the | |
15124 | indicated size (in bytes). */ | |
15125 | anonymous_size = DW_UNSND (attr); | |
15126 | } | |
15127 | else | |
15128 | { | |
15129 | /* The size of the anonymous object containing | |
15130 | the bit field must be inferred from the type | |
15131 | attribute of the data member containing the | |
15132 | bit field. */ | |
15133 | anonymous_size = TYPE_LENGTH (fp->type); | |
15134 | } | |
f41f5e61 PA |
15135 | SET_FIELD_BITPOS (*fp, |
15136 | (FIELD_BITPOS (*fp) | |
15137 | + anonymous_size * bits_per_byte | |
15138 | - bit_offset - FIELD_BITSIZE (*fp))); | |
c906108c SS |
15139 | } |
15140 | } | |
da5b30da AA |
15141 | attr = dwarf2_attr (die, DW_AT_data_bit_offset, cu); |
15142 | if (attr != NULL) | |
15143 | SET_FIELD_BITPOS (*fp, (FIELD_BITPOS (*fp) | |
15144 | + dwarf2_get_attr_constant_value (attr, 0))); | |
c906108c SS |
15145 | |
15146 | /* Get name of field. */ | |
39cbfefa DJ |
15147 | fieldname = dwarf2_name (die, cu); |
15148 | if (fieldname == NULL) | |
15149 | fieldname = ""; | |
d8151005 DJ |
15150 | |
15151 | /* The name is already allocated along with this objfile, so we don't | |
15152 | need to duplicate it for the type. */ | |
15153 | fp->name = fieldname; | |
c906108c SS |
15154 | |
15155 | /* Change accessibility for artificial fields (e.g. virtual table | |
c5aa993b | 15156 | pointer or virtual base class pointer) to private. */ |
e142c38c | 15157 | if (dwarf2_attr (die, DW_AT_artificial, cu)) |
c906108c | 15158 | { |
d48cc9dd | 15159 | FIELD_ARTIFICIAL (*fp) = 1; |
c906108c SS |
15160 | new_field->accessibility = DW_ACCESS_private; |
15161 | fip->non_public_fields = 1; | |
15162 | } | |
15163 | } | |
a9a9bd0f | 15164 | else if (die->tag == DW_TAG_member || die->tag == DW_TAG_variable) |
c906108c | 15165 | { |
a9a9bd0f DC |
15166 | /* C++ static member. */ |
15167 | ||
15168 | /* NOTE: carlton/2002-11-05: It should be a DW_TAG_member that | |
15169 | is a declaration, but all versions of G++ as of this writing | |
15170 | (so through at least 3.2.1) incorrectly generate | |
15171 | DW_TAG_variable tags. */ | |
6e70227d | 15172 | |
ff355380 | 15173 | const char *physname; |
c906108c | 15174 | |
a9a9bd0f | 15175 | /* Get name of field. */ |
39cbfefa DJ |
15176 | fieldname = dwarf2_name (die, cu); |
15177 | if (fieldname == NULL) | |
c906108c SS |
15178 | return; |
15179 | ||
254e6b9e | 15180 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
3863f96c DE |
15181 | if (attr |
15182 | /* Only create a symbol if this is an external value. | |
15183 | new_symbol checks this and puts the value in the global symbol | |
15184 | table, which we want. If it is not external, new_symbol | |
15185 | will try to put the value in cu->list_in_scope which is wrong. */ | |
15186 | && dwarf2_flag_true_p (die, DW_AT_external, cu)) | |
254e6b9e DE |
15187 | { |
15188 | /* A static const member, not much different than an enum as far as | |
15189 | we're concerned, except that we can support more types. */ | |
15190 | new_symbol (die, NULL, cu); | |
15191 | } | |
15192 | ||
2df3850c | 15193 | /* Get physical name. */ |
ff355380 | 15194 | physname = dwarf2_physname (fieldname, die, cu); |
c906108c | 15195 | |
d8151005 DJ |
15196 | /* The name is already allocated along with this objfile, so we don't |
15197 | need to duplicate it for the type. */ | |
15198 | SET_FIELD_PHYSNAME (*fp, physname ? physname : ""); | |
e7c27a73 | 15199 | FIELD_TYPE (*fp) = die_type (die, cu); |
d8151005 | 15200 | FIELD_NAME (*fp) = fieldname; |
c906108c SS |
15201 | } |
15202 | else if (die->tag == DW_TAG_inheritance) | |
15203 | { | |
74ac6d43 | 15204 | LONGEST offset; |
d4b96c9a | 15205 | |
74ac6d43 TT |
15206 | /* C++ base class field. */ |
15207 | if (handle_data_member_location (die, cu, &offset)) | |
15208 | SET_FIELD_BITPOS (*fp, offset * bits_per_byte); | |
c906108c | 15209 | FIELD_BITSIZE (*fp) = 0; |
e7c27a73 | 15210 | FIELD_TYPE (*fp) = die_type (die, cu); |
a737d952 | 15211 | FIELD_NAME (*fp) = TYPE_NAME (fp->type); |
c906108c | 15212 | } |
2ddeaf8a TT |
15213 | else if (die->tag == DW_TAG_variant_part) |
15214 | { | |
15215 | /* process_structure_scope will treat this DIE as a union. */ | |
15216 | process_structure_scope (die, cu); | |
15217 | ||
15218 | /* The variant part is relative to the start of the enclosing | |
15219 | structure. */ | |
15220 | SET_FIELD_BITPOS (*fp, 0); | |
15221 | fp->type = get_die_type (die, cu); | |
15222 | fp->artificial = 1; | |
15223 | fp->name = "<<variant>>"; | |
c8c81635 TT |
15224 | |
15225 | /* Normally a DW_TAG_variant_part won't have a size, but our | |
15226 | representation requires one, so set it to the maximum of the | |
15227 | child sizes. */ | |
15228 | if (TYPE_LENGTH (fp->type) == 0) | |
15229 | { | |
15230 | unsigned max = 0; | |
15231 | for (int i = 0; i < TYPE_NFIELDS (fp->type); ++i) | |
15232 | if (TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i)) > max) | |
15233 | max = TYPE_LENGTH (TYPE_FIELD_TYPE (fp->type, i)); | |
15234 | TYPE_LENGTH (fp->type) = max; | |
15235 | } | |
2ddeaf8a TT |
15236 | } |
15237 | else | |
15238 | gdb_assert_not_reached ("missing case in dwarf2_add_field"); | |
c906108c SS |
15239 | } |
15240 | ||
883fd55a KS |
15241 | /* Can the type given by DIE define another type? */ |
15242 | ||
15243 | static bool | |
15244 | type_can_define_types (const struct die_info *die) | |
15245 | { | |
15246 | switch (die->tag) | |
15247 | { | |
15248 | case DW_TAG_typedef: | |
15249 | case DW_TAG_class_type: | |
15250 | case DW_TAG_structure_type: | |
15251 | case DW_TAG_union_type: | |
15252 | case DW_TAG_enumeration_type: | |
15253 | return true; | |
15254 | ||
15255 | default: | |
15256 | return false; | |
15257 | } | |
15258 | } | |
15259 | ||
15260 | /* Add a type definition defined in the scope of the FIP's class. */ | |
98751a41 JK |
15261 | |
15262 | static void | |
883fd55a KS |
15263 | dwarf2_add_type_defn (struct field_info *fip, struct die_info *die, |
15264 | struct dwarf2_cu *cu) | |
6e70227d | 15265 | { |
be2daae6 TT |
15266 | struct decl_field fp; |
15267 | memset (&fp, 0, sizeof (fp)); | |
98751a41 | 15268 | |
883fd55a | 15269 | gdb_assert (type_can_define_types (die)); |
98751a41 | 15270 | |
883fd55a | 15271 | /* Get name of field. NULL is okay here, meaning an anonymous type. */ |
be2daae6 TT |
15272 | fp.name = dwarf2_name (die, cu); |
15273 | fp.type = read_type_die (die, cu); | |
98751a41 | 15274 | |
c191a687 KS |
15275 | /* Save accessibility. */ |
15276 | enum dwarf_access_attribute accessibility; | |
15277 | struct attribute *attr = dwarf2_attr (die, DW_AT_accessibility, cu); | |
15278 | if (attr != NULL) | |
15279 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); | |
15280 | else | |
15281 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15282 | switch (accessibility) | |
15283 | { | |
15284 | case DW_ACCESS_public: | |
15285 | /* The assumed value if neither private nor protected. */ | |
15286 | break; | |
15287 | case DW_ACCESS_private: | |
be2daae6 | 15288 | fp.is_private = 1; |
c191a687 KS |
15289 | break; |
15290 | case DW_ACCESS_protected: | |
be2daae6 | 15291 | fp.is_protected = 1; |
c191a687 KS |
15292 | break; |
15293 | default: | |
b98664d3 | 15294 | complaint (_("Unhandled DW_AT_accessibility value (%x)"), accessibility); |
c191a687 KS |
15295 | } |
15296 | ||
883fd55a | 15297 | if (die->tag == DW_TAG_typedef) |
be2daae6 | 15298 | fip->typedef_field_list.push_back (fp); |
883fd55a | 15299 | else |
be2daae6 | 15300 | fip->nested_types_list.push_back (fp); |
98751a41 JK |
15301 | } |
15302 | ||
c906108c SS |
15303 | /* Create the vector of fields, and attach it to the type. */ |
15304 | ||
15305 | static void | |
fba45db2 | 15306 | dwarf2_attach_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15307 | struct dwarf2_cu *cu) |
c906108c SS |
15308 | { |
15309 | int nfields = fip->nfields; | |
15310 | ||
15311 | /* Record the field count, allocate space for the array of fields, | |
15312 | and create blank accessibility bitfields if necessary. */ | |
15313 | TYPE_NFIELDS (type) = nfields; | |
15314 | TYPE_FIELDS (type) = (struct field *) | |
be2daae6 | 15315 | TYPE_ZALLOC (type, sizeof (struct field) * nfields); |
c906108c | 15316 | |
b4ba55a1 | 15317 | if (fip->non_public_fields && cu->language != language_ada) |
c906108c SS |
15318 | { |
15319 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
15320 | ||
15321 | TYPE_FIELD_PRIVATE_BITS (type) = | |
15322 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15323 | B_CLRALL (TYPE_FIELD_PRIVATE_BITS (type), nfields); | |
15324 | ||
15325 | TYPE_FIELD_PROTECTED_BITS (type) = | |
15326 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15327 | B_CLRALL (TYPE_FIELD_PROTECTED_BITS (type), nfields); | |
15328 | ||
774b6a14 TT |
15329 | TYPE_FIELD_IGNORE_BITS (type) = |
15330 | (B_TYPE *) TYPE_ALLOC (type, B_BYTES (nfields)); | |
15331 | B_CLRALL (TYPE_FIELD_IGNORE_BITS (type), nfields); | |
c906108c SS |
15332 | } |
15333 | ||
15334 | /* If the type has baseclasses, allocate and clear a bit vector for | |
15335 | TYPE_FIELD_VIRTUAL_BITS. */ | |
be2daae6 | 15336 | if (!fip->baseclasses.empty () && cu->language != language_ada) |
c906108c | 15337 | { |
be2daae6 | 15338 | int num_bytes = B_BYTES (fip->baseclasses.size ()); |
fe1b8b76 | 15339 | unsigned char *pointer; |
c906108c SS |
15340 | |
15341 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
224c3ddb | 15342 | pointer = (unsigned char *) TYPE_ALLOC (type, num_bytes); |
fe1b8b76 | 15343 | TYPE_FIELD_VIRTUAL_BITS (type) = pointer; |
be2daae6 TT |
15344 | B_CLRALL (TYPE_FIELD_VIRTUAL_BITS (type), fip->baseclasses.size ()); |
15345 | TYPE_N_BASECLASSES (type) = fip->baseclasses.size (); | |
c906108c SS |
15346 | } |
15347 | ||
2ddeaf8a TT |
15348 | if (TYPE_FLAG_DISCRIMINATED_UNION (type)) |
15349 | { | |
15350 | struct discriminant_info *di = alloc_discriminant_info (type, -1, -1); | |
15351 | ||
be2daae6 | 15352 | for (int index = 0; index < nfields; ++index) |
2ddeaf8a | 15353 | { |
be2daae6 TT |
15354 | struct nextfield &field = fip->fields[index]; |
15355 | ||
15356 | if (field.variant.is_discriminant) | |
2ddeaf8a | 15357 | di->discriminant_index = index; |
be2daae6 | 15358 | else if (field.variant.default_branch) |
2ddeaf8a TT |
15359 | di->default_index = index; |
15360 | else | |
be2daae6 | 15361 | di->discriminants[index] = field.variant.discriminant_value; |
2ddeaf8a TT |
15362 | } |
15363 | } | |
15364 | ||
be2daae6 TT |
15365 | /* Copy the saved-up fields into the field vector. */ |
15366 | for (int i = 0; i < nfields; ++i) | |
c906108c | 15367 | { |
be2daae6 TT |
15368 | struct nextfield &field |
15369 | = ((i < fip->baseclasses.size ()) ? fip->baseclasses[i] | |
15370 | : fip->fields[i - fip->baseclasses.size ()]); | |
7d0ccb61 | 15371 | |
be2daae6 TT |
15372 | TYPE_FIELD (type, i) = field.field; |
15373 | switch (field.accessibility) | |
c906108c | 15374 | { |
c5aa993b | 15375 | case DW_ACCESS_private: |
b4ba55a1 | 15376 | if (cu->language != language_ada) |
be2daae6 | 15377 | SET_TYPE_FIELD_PRIVATE (type, i); |
c5aa993b | 15378 | break; |
c906108c | 15379 | |
c5aa993b | 15380 | case DW_ACCESS_protected: |
b4ba55a1 | 15381 | if (cu->language != language_ada) |
be2daae6 | 15382 | SET_TYPE_FIELD_PROTECTED (type, i); |
c5aa993b | 15383 | break; |
c906108c | 15384 | |
c5aa993b JM |
15385 | case DW_ACCESS_public: |
15386 | break; | |
c906108c | 15387 | |
c5aa993b JM |
15388 | default: |
15389 | /* Unknown accessibility. Complain and treat it as public. */ | |
15390 | { | |
b98664d3 | 15391 | complaint (_("unsupported accessibility %d"), |
be2daae6 | 15392 | field.accessibility); |
c5aa993b JM |
15393 | } |
15394 | break; | |
c906108c | 15395 | } |
be2daae6 | 15396 | if (i < fip->baseclasses.size ()) |
c906108c | 15397 | { |
be2daae6 | 15398 | switch (field.virtuality) |
c906108c | 15399 | { |
c5aa993b JM |
15400 | case DW_VIRTUALITY_virtual: |
15401 | case DW_VIRTUALITY_pure_virtual: | |
b4ba55a1 | 15402 | if (cu->language == language_ada) |
a73c6dcd | 15403 | error (_("unexpected virtuality in component of Ada type")); |
be2daae6 | 15404 | SET_TYPE_FIELD_VIRTUAL (type, i); |
c5aa993b | 15405 | break; |
c906108c SS |
15406 | } |
15407 | } | |
c906108c SS |
15408 | } |
15409 | } | |
15410 | ||
7d27a96d TT |
15411 | /* Return true if this member function is a constructor, false |
15412 | otherwise. */ | |
15413 | ||
15414 | static int | |
15415 | dwarf2_is_constructor (struct die_info *die, struct dwarf2_cu *cu) | |
15416 | { | |
15417 | const char *fieldname; | |
fe978cb0 | 15418 | const char *type_name; |
7d27a96d TT |
15419 | int len; |
15420 | ||
15421 | if (die->parent == NULL) | |
15422 | return 0; | |
15423 | ||
15424 | if (die->parent->tag != DW_TAG_structure_type | |
15425 | && die->parent->tag != DW_TAG_union_type | |
15426 | && die->parent->tag != DW_TAG_class_type) | |
15427 | return 0; | |
15428 | ||
15429 | fieldname = dwarf2_name (die, cu); | |
fe978cb0 PA |
15430 | type_name = dwarf2_name (die->parent, cu); |
15431 | if (fieldname == NULL || type_name == NULL) | |
7d27a96d TT |
15432 | return 0; |
15433 | ||
15434 | len = strlen (fieldname); | |
fe978cb0 PA |
15435 | return (strncmp (fieldname, type_name, len) == 0 |
15436 | && (type_name[len] == '\0' || type_name[len] == '<')); | |
7d27a96d TT |
15437 | } |
15438 | ||
c906108c SS |
15439 | /* Add a member function to the proper fieldlist. */ |
15440 | ||
15441 | static void | |
107d2387 | 15442 | dwarf2_add_member_fn (struct field_info *fip, struct die_info *die, |
e7c27a73 | 15443 | struct type *type, struct dwarf2_cu *cu) |
c906108c | 15444 | { |
518817b3 | 15445 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 15446 | struct attribute *attr; |
c906108c | 15447 | int i; |
be2daae6 | 15448 | struct fnfieldlist *flp = nullptr; |
c906108c | 15449 | struct fn_field *fnp; |
15d034d0 | 15450 | const char *fieldname; |
f792889a | 15451 | struct type *this_type; |
60d5a603 | 15452 | enum dwarf_access_attribute accessibility; |
c906108c | 15453 | |
b4ba55a1 | 15454 | if (cu->language == language_ada) |
a73c6dcd | 15455 | error (_("unexpected member function in Ada type")); |
b4ba55a1 | 15456 | |
2df3850c | 15457 | /* Get name of member function. */ |
39cbfefa DJ |
15458 | fieldname = dwarf2_name (die, cu); |
15459 | if (fieldname == NULL) | |
2df3850c | 15460 | return; |
c906108c | 15461 | |
c906108c | 15462 | /* Look up member function name in fieldlist. */ |
be2daae6 | 15463 | for (i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15464 | { |
27bfe10e | 15465 | if (strcmp (fip->fnfieldlists[i].name, fieldname) == 0) |
be2daae6 TT |
15466 | { |
15467 | flp = &fip->fnfieldlists[i]; | |
15468 | break; | |
15469 | } | |
c906108c SS |
15470 | } |
15471 | ||
be2daae6 TT |
15472 | /* Create a new fnfieldlist if necessary. */ |
15473 | if (flp == nullptr) | |
c906108c | 15474 | { |
be2daae6 TT |
15475 | fip->fnfieldlists.emplace_back (); |
15476 | flp = &fip->fnfieldlists.back (); | |
c906108c | 15477 | flp->name = fieldname; |
be2daae6 | 15478 | i = fip->fnfieldlists.size () - 1; |
c906108c SS |
15479 | } |
15480 | ||
be2daae6 TT |
15481 | /* Create a new member function field and add it to the vector of |
15482 | fnfieldlists. */ | |
15483 | flp->fnfields.emplace_back (); | |
15484 | fnp = &flp->fnfields.back (); | |
3da10d80 KS |
15485 | |
15486 | /* Delay processing of the physname until later. */ | |
9c37b5ae | 15487 | if (cu->language == language_cplus) |
be2daae6 TT |
15488 | add_to_method_list (type, i, flp->fnfields.size () - 1, fieldname, |
15489 | die, cu); | |
3da10d80 KS |
15490 | else |
15491 | { | |
1d06ead6 | 15492 | const char *physname = dwarf2_physname (fieldname, die, cu); |
3da10d80 KS |
15493 | fnp->physname = physname ? physname : ""; |
15494 | } | |
15495 | ||
c906108c | 15496 | fnp->type = alloc_type (objfile); |
f792889a DJ |
15497 | this_type = read_type_die (die, cu); |
15498 | if (this_type && TYPE_CODE (this_type) == TYPE_CODE_FUNC) | |
c906108c | 15499 | { |
f792889a | 15500 | int nparams = TYPE_NFIELDS (this_type); |
c906108c | 15501 | |
f792889a | 15502 | /* TYPE is the domain of this method, and THIS_TYPE is the type |
e26fb1d7 DC |
15503 | of the method itself (TYPE_CODE_METHOD). */ |
15504 | smash_to_method_type (fnp->type, type, | |
f792889a DJ |
15505 | TYPE_TARGET_TYPE (this_type), |
15506 | TYPE_FIELDS (this_type), | |
15507 | TYPE_NFIELDS (this_type), | |
15508 | TYPE_VARARGS (this_type)); | |
c906108c SS |
15509 | |
15510 | /* Handle static member functions. | |
c5aa993b | 15511 | Dwarf2 has no clean way to discern C++ static and non-static |
0963b4bd MS |
15512 | member functions. G++ helps GDB by marking the first |
15513 | parameter for non-static member functions (which is the this | |
15514 | pointer) as artificial. We obtain this information from | |
15515 | read_subroutine_type via TYPE_FIELD_ARTIFICIAL. */ | |
f792889a | 15516 | if (nparams == 0 || TYPE_FIELD_ARTIFICIAL (this_type, 0) == 0) |
c906108c SS |
15517 | fnp->voffset = VOFFSET_STATIC; |
15518 | } | |
15519 | else | |
b98664d3 | 15520 | complaint (_("member function type missing for '%s'"), |
3da10d80 | 15521 | dwarf2_full_name (fieldname, die, cu)); |
c906108c SS |
15522 | |
15523 | /* Get fcontext from DW_AT_containing_type if present. */ | |
e142c38c | 15524 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
e7c27a73 | 15525 | fnp->fcontext = die_containing_type (die, cu); |
c906108c | 15526 | |
3e43a32a MS |
15527 | /* dwarf2 doesn't have stubbed physical names, so the setting of is_const and |
15528 | is_volatile is irrelevant, as it is needed by gdb_mangle_name only. */ | |
c906108c SS |
15529 | |
15530 | /* Get accessibility. */ | |
e142c38c | 15531 | attr = dwarf2_attr (die, DW_AT_accessibility, cu); |
c906108c | 15532 | if (attr) |
aead7601 | 15533 | accessibility = (enum dwarf_access_attribute) DW_UNSND (attr); |
60d5a603 JK |
15534 | else |
15535 | accessibility = dwarf2_default_access_attribute (die, cu); | |
15536 | switch (accessibility) | |
c906108c | 15537 | { |
60d5a603 JK |
15538 | case DW_ACCESS_private: |
15539 | fnp->is_private = 1; | |
15540 | break; | |
15541 | case DW_ACCESS_protected: | |
15542 | fnp->is_protected = 1; | |
15543 | break; | |
c906108c SS |
15544 | } |
15545 | ||
b02dede2 | 15546 | /* Check for artificial methods. */ |
e142c38c | 15547 | attr = dwarf2_attr (die, DW_AT_artificial, cu); |
b02dede2 DJ |
15548 | if (attr && DW_UNSND (attr) != 0) |
15549 | fnp->is_artificial = 1; | |
15550 | ||
7d27a96d TT |
15551 | fnp->is_constructor = dwarf2_is_constructor (die, cu); |
15552 | ||
0d564a31 | 15553 | /* Get index in virtual function table if it is a virtual member |
aec5aa8b TT |
15554 | function. For older versions of GCC, this is an offset in the |
15555 | appropriate virtual table, as specified by DW_AT_containing_type. | |
15556 | For everyone else, it is an expression to be evaluated relative | |
0d564a31 DJ |
15557 | to the object address. */ |
15558 | ||
e142c38c | 15559 | attr = dwarf2_attr (die, DW_AT_vtable_elem_location, cu); |
aec5aa8b | 15560 | if (attr) |
8e19ed76 | 15561 | { |
aec5aa8b | 15562 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size > 0) |
8e19ed76 | 15563 | { |
aec5aa8b TT |
15564 | if (DW_BLOCK (attr)->data[0] == DW_OP_constu) |
15565 | { | |
15566 | /* Old-style GCC. */ | |
15567 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu) + 2; | |
15568 | } | |
15569 | else if (DW_BLOCK (attr)->data[0] == DW_OP_deref | |
15570 | || (DW_BLOCK (attr)->size > 1 | |
15571 | && DW_BLOCK (attr)->data[0] == DW_OP_deref_size | |
15572 | && DW_BLOCK (attr)->data[1] == cu->header.addr_size)) | |
15573 | { | |
aec5aa8b TT |
15574 | fnp->voffset = decode_locdesc (DW_BLOCK (attr), cu); |
15575 | if ((fnp->voffset % cu->header.addr_size) != 0) | |
15576 | dwarf2_complex_location_expr_complaint (); | |
15577 | else | |
15578 | fnp->voffset /= cu->header.addr_size; | |
15579 | fnp->voffset += 2; | |
15580 | } | |
15581 | else | |
15582 | dwarf2_complex_location_expr_complaint (); | |
15583 | ||
15584 | if (!fnp->fcontext) | |
7e993ebf KS |
15585 | { |
15586 | /* If there is no `this' field and no DW_AT_containing_type, | |
15587 | we cannot actually find a base class context for the | |
15588 | vtable! */ | |
15589 | if (TYPE_NFIELDS (this_type) == 0 | |
15590 | || !TYPE_FIELD_ARTIFICIAL (this_type, 0)) | |
15591 | { | |
b98664d3 | 15592 | complaint (_("cannot determine context for virtual member " |
9d8780f0 SM |
15593 | "function \"%s\" (offset %s)"), |
15594 | fieldname, sect_offset_str (die->sect_off)); | |
7e993ebf KS |
15595 | } |
15596 | else | |
15597 | { | |
15598 | fnp->fcontext | |
15599 | = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (this_type, 0)); | |
15600 | } | |
15601 | } | |
aec5aa8b | 15602 | } |
3690dd37 | 15603 | else if (attr_form_is_section_offset (attr)) |
8e19ed76 | 15604 | { |
4d3c2250 | 15605 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
15606 | } |
15607 | else | |
15608 | { | |
4d3c2250 KB |
15609 | dwarf2_invalid_attrib_class_complaint ("DW_AT_vtable_elem_location", |
15610 | fieldname); | |
8e19ed76 | 15611 | } |
0d564a31 | 15612 | } |
d48cc9dd DJ |
15613 | else |
15614 | { | |
15615 | attr = dwarf2_attr (die, DW_AT_virtuality, cu); | |
15616 | if (attr && DW_UNSND (attr)) | |
15617 | { | |
15618 | /* GCC does this, as of 2008-08-25; PR debug/37237. */ | |
b98664d3 | 15619 | complaint (_("Member function \"%s\" (offset %s) is virtual " |
3e43a32a | 15620 | "but the vtable offset is not specified"), |
9d8780f0 | 15621 | fieldname, sect_offset_str (die->sect_off)); |
9655fd1a | 15622 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
d48cc9dd DJ |
15623 | TYPE_CPLUS_DYNAMIC (type) = 1; |
15624 | } | |
15625 | } | |
c906108c SS |
15626 | } |
15627 | ||
15628 | /* Create the vector of member function fields, and attach it to the type. */ | |
15629 | ||
15630 | static void | |
fba45db2 | 15631 | dwarf2_attach_fn_fields_to_type (struct field_info *fip, struct type *type, |
e7c27a73 | 15632 | struct dwarf2_cu *cu) |
c906108c | 15633 | { |
b4ba55a1 | 15634 | if (cu->language == language_ada) |
a73c6dcd | 15635 | error (_("unexpected member functions in Ada type")); |
b4ba55a1 | 15636 | |
c906108c SS |
15637 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
15638 | TYPE_FN_FIELDLISTS (type) = (struct fn_fieldlist *) | |
be2daae6 TT |
15639 | TYPE_ALLOC (type, |
15640 | sizeof (struct fn_fieldlist) * fip->fnfieldlists.size ()); | |
c906108c | 15641 | |
be2daae6 | 15642 | for (int i = 0; i < fip->fnfieldlists.size (); i++) |
c906108c | 15643 | { |
be2daae6 | 15644 | struct fnfieldlist &nf = fip->fnfieldlists[i]; |
c906108c | 15645 | struct fn_fieldlist *fn_flp = &TYPE_FN_FIELDLIST (type, i); |
c906108c | 15646 | |
be2daae6 TT |
15647 | TYPE_FN_FIELDLIST_NAME (type, i) = nf.name; |
15648 | TYPE_FN_FIELDLIST_LENGTH (type, i) = nf.fnfields.size (); | |
c906108c | 15649 | fn_flp->fn_fields = (struct fn_field *) |
be2daae6 TT |
15650 | TYPE_ALLOC (type, sizeof (struct fn_field) * nf.fnfields.size ()); |
15651 | ||
15652 | for (int k = 0; k < nf.fnfields.size (); ++k) | |
15653 | fn_flp->fn_fields[k] = nf.fnfields[k]; | |
c906108c SS |
15654 | } |
15655 | ||
be2daae6 | 15656 | TYPE_NFN_FIELDS (type) = fip->fnfieldlists.size (); |
c906108c SS |
15657 | } |
15658 | ||
1168df01 JB |
15659 | /* Returns non-zero if NAME is the name of a vtable member in CU's |
15660 | language, zero otherwise. */ | |
15661 | static int | |
15662 | is_vtable_name (const char *name, struct dwarf2_cu *cu) | |
15663 | { | |
15664 | static const char vptr[] = "_vptr"; | |
15665 | ||
9c37b5ae TT |
15666 | /* Look for the C++ form of the vtable. */ |
15667 | if (startswith (name, vptr) && is_cplus_marker (name[sizeof (vptr) - 1])) | |
1168df01 JB |
15668 | return 1; |
15669 | ||
15670 | return 0; | |
15671 | } | |
15672 | ||
c0dd20ea | 15673 | /* GCC outputs unnamed structures that are really pointers to member |
0b92b5bb TT |
15674 | functions, with the ABI-specified layout. If TYPE describes |
15675 | such a structure, smash it into a member function type. | |
61049d3b DJ |
15676 | |
15677 | GCC shouldn't do this; it should just output pointer to member DIEs. | |
15678 | This is GCC PR debug/28767. */ | |
c0dd20ea | 15679 | |
0b92b5bb TT |
15680 | static void |
15681 | quirk_gcc_member_function_pointer (struct type *type, struct objfile *objfile) | |
c0dd20ea | 15682 | { |
09e2d7c7 | 15683 | struct type *pfn_type, *self_type, *new_type; |
c0dd20ea DJ |
15684 | |
15685 | /* Check for a structure with no name and two children. */ | |
0b92b5bb TT |
15686 | if (TYPE_CODE (type) != TYPE_CODE_STRUCT || TYPE_NFIELDS (type) != 2) |
15687 | return; | |
c0dd20ea DJ |
15688 | |
15689 | /* Check for __pfn and __delta members. */ | |
0b92b5bb TT |
15690 | if (TYPE_FIELD_NAME (type, 0) == NULL |
15691 | || strcmp (TYPE_FIELD_NAME (type, 0), "__pfn") != 0 | |
15692 | || TYPE_FIELD_NAME (type, 1) == NULL | |
15693 | || strcmp (TYPE_FIELD_NAME (type, 1), "__delta") != 0) | |
15694 | return; | |
c0dd20ea DJ |
15695 | |
15696 | /* Find the type of the method. */ | |
0b92b5bb | 15697 | pfn_type = TYPE_FIELD_TYPE (type, 0); |
c0dd20ea DJ |
15698 | if (pfn_type == NULL |
15699 | || TYPE_CODE (pfn_type) != TYPE_CODE_PTR | |
15700 | || TYPE_CODE (TYPE_TARGET_TYPE (pfn_type)) != TYPE_CODE_FUNC) | |
0b92b5bb | 15701 | return; |
c0dd20ea DJ |
15702 | |
15703 | /* Look for the "this" argument. */ | |
15704 | pfn_type = TYPE_TARGET_TYPE (pfn_type); | |
15705 | if (TYPE_NFIELDS (pfn_type) == 0 | |
0b92b5bb | 15706 | /* || TYPE_FIELD_TYPE (pfn_type, 0) == NULL */ |
c0dd20ea | 15707 | || TYPE_CODE (TYPE_FIELD_TYPE (pfn_type, 0)) != TYPE_CODE_PTR) |
0b92b5bb | 15708 | return; |
c0dd20ea | 15709 | |
09e2d7c7 | 15710 | self_type = TYPE_TARGET_TYPE (TYPE_FIELD_TYPE (pfn_type, 0)); |
0b92b5bb | 15711 | new_type = alloc_type (objfile); |
09e2d7c7 | 15712 | smash_to_method_type (new_type, self_type, TYPE_TARGET_TYPE (pfn_type), |
c0dd20ea DJ |
15713 | TYPE_FIELDS (pfn_type), TYPE_NFIELDS (pfn_type), |
15714 | TYPE_VARARGS (pfn_type)); | |
0b92b5bb | 15715 | smash_to_methodptr_type (type, new_type); |
c0dd20ea | 15716 | } |
1168df01 | 15717 | |
2b4424c3 TT |
15718 | /* If the DIE has a DW_AT_alignment attribute, return its value, doing |
15719 | appropriate error checking and issuing complaints if there is a | |
15720 | problem. */ | |
15721 | ||
15722 | static ULONGEST | |
15723 | get_alignment (struct dwarf2_cu *cu, struct die_info *die) | |
15724 | { | |
15725 | struct attribute *attr = dwarf2_attr (die, DW_AT_alignment, cu); | |
15726 | ||
15727 | if (attr == nullptr) | |
15728 | return 0; | |
15729 | ||
15730 | if (!attr_form_is_constant (attr)) | |
15731 | { | |
b98664d3 | 15732 | complaint (_("DW_AT_alignment must have constant form" |
2b4424c3 TT |
15733 | " - DIE at %s [in module %s]"), |
15734 | sect_offset_str (die->sect_off), | |
15735 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15736 | return 0; | |
15737 | } | |
15738 | ||
15739 | ULONGEST align; | |
15740 | if (attr->form == DW_FORM_sdata) | |
15741 | { | |
15742 | LONGEST val = DW_SND (attr); | |
15743 | if (val < 0) | |
15744 | { | |
b98664d3 | 15745 | complaint (_("DW_AT_alignment value must not be negative" |
2b4424c3 TT |
15746 | " - DIE at %s [in module %s]"), |
15747 | sect_offset_str (die->sect_off), | |
15748 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15749 | return 0; | |
15750 | } | |
15751 | align = val; | |
15752 | } | |
15753 | else | |
15754 | align = DW_UNSND (attr); | |
15755 | ||
15756 | if (align == 0) | |
15757 | { | |
b98664d3 | 15758 | complaint (_("DW_AT_alignment value must not be zero" |
2b4424c3 TT |
15759 | " - DIE at %s [in module %s]"), |
15760 | sect_offset_str (die->sect_off), | |
15761 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15762 | return 0; | |
15763 | } | |
15764 | if ((align & (align - 1)) != 0) | |
15765 | { | |
b98664d3 | 15766 | complaint (_("DW_AT_alignment value must be a power of 2" |
2b4424c3 TT |
15767 | " - DIE at %s [in module %s]"), |
15768 | sect_offset_str (die->sect_off), | |
15769 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15770 | return 0; | |
15771 | } | |
15772 | ||
15773 | return align; | |
15774 | } | |
15775 | ||
15776 | /* If the DIE has a DW_AT_alignment attribute, use its value to set | |
15777 | the alignment for TYPE. */ | |
15778 | ||
15779 | static void | |
15780 | maybe_set_alignment (struct dwarf2_cu *cu, struct die_info *die, | |
15781 | struct type *type) | |
15782 | { | |
15783 | if (!set_type_align (type, get_alignment (cu, die))) | |
b98664d3 | 15784 | complaint (_("DW_AT_alignment value too large" |
2b4424c3 TT |
15785 | " - DIE at %s [in module %s]"), |
15786 | sect_offset_str (die->sect_off), | |
15787 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15788 | } | |
685b1105 | 15789 | |
c906108c | 15790 | /* Called when we find the DIE that starts a structure or union scope |
c767944b DJ |
15791 | (definition) to create a type for the structure or union. Fill in |
15792 | the type's name and general properties; the members will not be | |
83655187 DE |
15793 | processed until process_structure_scope. A symbol table entry for |
15794 | the type will also not be done until process_structure_scope (assuming | |
15795 | the type has a name). | |
c906108c | 15796 | |
c767944b DJ |
15797 | NOTE: we need to call these functions regardless of whether or not the |
15798 | DIE has a DW_AT_name attribute, since it might be an anonymous | |
c906108c | 15799 | structure or union. This gets the type entered into our set of |
83655187 | 15800 | user defined types. */ |
c906108c | 15801 | |
f792889a | 15802 | static struct type * |
134d01f1 | 15803 | read_structure_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 15804 | { |
518817b3 | 15805 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
15806 | struct type *type; |
15807 | struct attribute *attr; | |
15d034d0 | 15808 | const char *name; |
c906108c | 15809 | |
348e048f DE |
15810 | /* If the definition of this type lives in .debug_types, read that type. |
15811 | Don't follow DW_AT_specification though, that will take us back up | |
15812 | the chain and we want to go down. */ | |
45e58e77 | 15813 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
15814 | if (attr) |
15815 | { | |
ac9ec31b | 15816 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 15817 | |
ac9ec31b | 15818 | /* The type's CU may not be the same as CU. |
02142a6c | 15819 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
15820 | return set_die_type (die, type, cu); |
15821 | } | |
15822 | ||
c0dd20ea | 15823 | type = alloc_type (objfile); |
c906108c | 15824 | INIT_CPLUS_SPECIFIC (type); |
93311388 | 15825 | |
39cbfefa DJ |
15826 | name = dwarf2_name (die, cu); |
15827 | if (name != NULL) | |
c906108c | 15828 | { |
987504bb | 15829 | if (cu->language == language_cplus |
c44af4eb TT |
15830 | || cu->language == language_d |
15831 | || cu->language == language_rust) | |
63d06c5c | 15832 | { |
15d034d0 | 15833 | const char *full_name = dwarf2_full_name (name, die, cu); |
3da10d80 KS |
15834 | |
15835 | /* dwarf2_full_name might have already finished building the DIE's | |
15836 | type. If so, there is no need to continue. */ | |
15837 | if (get_die_type (die, cu) != NULL) | |
15838 | return get_die_type (die, cu); | |
15839 | ||
e86ca25f | 15840 | TYPE_NAME (type) = full_name; |
63d06c5c DC |
15841 | } |
15842 | else | |
15843 | { | |
d8151005 DJ |
15844 | /* The name is already allocated along with this objfile, so |
15845 | we don't need to duplicate it for the type. */ | |
e86ca25f | 15846 | TYPE_NAME (type) = name; |
63d06c5c | 15847 | } |
c906108c SS |
15848 | } |
15849 | ||
15850 | if (die->tag == DW_TAG_structure_type) | |
15851 | { | |
15852 | TYPE_CODE (type) = TYPE_CODE_STRUCT; | |
15853 | } | |
15854 | else if (die->tag == DW_TAG_union_type) | |
15855 | { | |
15856 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15857 | } | |
2ddeaf8a TT |
15858 | else if (die->tag == DW_TAG_variant_part) |
15859 | { | |
15860 | TYPE_CODE (type) = TYPE_CODE_UNION; | |
15861 | TYPE_FLAG_DISCRIMINATED_UNION (type) = 1; | |
15862 | } | |
c906108c SS |
15863 | else |
15864 | { | |
4753d33b | 15865 | TYPE_CODE (type) = TYPE_CODE_STRUCT; |
c906108c SS |
15866 | } |
15867 | ||
0cc2414c TT |
15868 | if (cu->language == language_cplus && die->tag == DW_TAG_class_type) |
15869 | TYPE_DECLARED_CLASS (type) = 1; | |
15870 | ||
e142c38c | 15871 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
15872 | if (attr) |
15873 | { | |
155bfbd3 JB |
15874 | if (attr_form_is_constant (attr)) |
15875 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
15876 | else | |
15877 | { | |
15878 | /* For the moment, dynamic type sizes are not supported | |
15879 | by GDB's struct type. The actual size is determined | |
15880 | on-demand when resolving the type of a given object, | |
15881 | so set the type's length to zero for now. Otherwise, | |
15882 | we record an expression as the length, and that expression | |
15883 | could lead to a very large value, which could eventually | |
15884 | lead to us trying to allocate that much memory when creating | |
15885 | a value of that type. */ | |
15886 | TYPE_LENGTH (type) = 0; | |
15887 | } | |
c906108c SS |
15888 | } |
15889 | else | |
15890 | { | |
15891 | TYPE_LENGTH (type) = 0; | |
15892 | } | |
15893 | ||
2b4424c3 TT |
15894 | maybe_set_alignment (cu, die, type); |
15895 | ||
5230b05a | 15896 | if (producer_is_icc_lt_14 (cu) && (TYPE_LENGTH (type) == 0)) |
685b1105 | 15897 | { |
5230b05a WT |
15898 | /* ICC<14 does not output the required DW_AT_declaration on |
15899 | incomplete types, but gives them a size of zero. */ | |
422b1cb0 | 15900 | TYPE_STUB (type) = 1; |
685b1105 JK |
15901 | } |
15902 | else | |
15903 | TYPE_STUB_SUPPORTED (type) = 1; | |
15904 | ||
dc718098 | 15905 | if (die_is_declaration (die, cu)) |
876cecd0 | 15906 | TYPE_STUB (type) = 1; |
a6c727b2 DJ |
15907 | else if (attr == NULL && die->child == NULL |
15908 | && producer_is_realview (cu->producer)) | |
15909 | /* RealView does not output the required DW_AT_declaration | |
15910 | on incomplete types. */ | |
15911 | TYPE_STUB (type) = 1; | |
dc718098 | 15912 | |
c906108c SS |
15913 | /* We need to add the type field to the die immediately so we don't |
15914 | infinitely recurse when dealing with pointers to the structure | |
0963b4bd | 15915 | type within the structure itself. */ |
1c379e20 | 15916 | set_die_type (die, type, cu); |
c906108c | 15917 | |
7e314c57 JK |
15918 | /* set_die_type should be already done. */ |
15919 | set_descriptive_type (type, die, cu); | |
15920 | ||
c767944b DJ |
15921 | return type; |
15922 | } | |
15923 | ||
2ddeaf8a TT |
15924 | /* A helper for process_structure_scope that handles a single member |
15925 | DIE. */ | |
15926 | ||
15927 | static void | |
15928 | handle_struct_member_die (struct die_info *child_die, struct type *type, | |
15929 | struct field_info *fi, | |
15930 | std::vector<struct symbol *> *template_args, | |
15931 | struct dwarf2_cu *cu) | |
15932 | { | |
15933 | if (child_die->tag == DW_TAG_member | |
15934 | || child_die->tag == DW_TAG_variable | |
15935 | || child_die->tag == DW_TAG_variant_part) | |
15936 | { | |
15937 | /* NOTE: carlton/2002-11-05: A C++ static data member | |
15938 | should be a DW_TAG_member that is a declaration, but | |
15939 | all versions of G++ as of this writing (so through at | |
15940 | least 3.2.1) incorrectly generate DW_TAG_variable | |
15941 | tags for them instead. */ | |
15942 | dwarf2_add_field (fi, child_die, cu); | |
15943 | } | |
15944 | else if (child_die->tag == DW_TAG_subprogram) | |
15945 | { | |
15946 | /* Rust doesn't have member functions in the C++ sense. | |
15947 | However, it does emit ordinary functions as children | |
15948 | of a struct DIE. */ | |
15949 | if (cu->language == language_rust) | |
15950 | read_func_scope (child_die, cu); | |
15951 | else | |
15952 | { | |
15953 | /* C++ member function. */ | |
15954 | dwarf2_add_member_fn (fi, child_die, type, cu); | |
15955 | } | |
15956 | } | |
15957 | else if (child_die->tag == DW_TAG_inheritance) | |
15958 | { | |
15959 | /* C++ base class field. */ | |
15960 | dwarf2_add_field (fi, child_die, cu); | |
15961 | } | |
15962 | else if (type_can_define_types (child_die)) | |
15963 | dwarf2_add_type_defn (fi, child_die, cu); | |
15964 | else if (child_die->tag == DW_TAG_template_type_param | |
15965 | || child_die->tag == DW_TAG_template_value_param) | |
15966 | { | |
15967 | struct symbol *arg = new_symbol (child_die, NULL, cu); | |
15968 | ||
15969 | if (arg != NULL) | |
15970 | template_args->push_back (arg); | |
15971 | } | |
15972 | else if (child_die->tag == DW_TAG_variant) | |
15973 | { | |
15974 | /* In a variant we want to get the discriminant and also add a | |
15975 | field for our sole member child. */ | |
15976 | struct attribute *discr = dwarf2_attr (child_die, DW_AT_discr_value, cu); | |
15977 | ||
bde09ab7 | 15978 | for (die_info *variant_child = child_die->child; |
2ddeaf8a TT |
15979 | variant_child != NULL; |
15980 | variant_child = sibling_die (variant_child)) | |
15981 | { | |
15982 | if (variant_child->tag == DW_TAG_member) | |
15983 | { | |
15984 | handle_struct_member_die (variant_child, type, fi, | |
15985 | template_args, cu); | |
15986 | /* Only handle the one. */ | |
15987 | break; | |
15988 | } | |
15989 | } | |
15990 | ||
15991 | /* We don't handle this but we might as well report it if we see | |
15992 | it. */ | |
15993 | if (dwarf2_attr (child_die, DW_AT_discr_list, cu) != nullptr) | |
b98664d3 | 15994 | complaint (_("DW_AT_discr_list is not supported yet" |
2ddeaf8a TT |
15995 | " - DIE at %s [in module %s]"), |
15996 | sect_offset_str (child_die->sect_off), | |
15997 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
15998 | ||
15999 | /* The first field was just added, so we can stash the | |
16000 | discriminant there. */ | |
be2daae6 | 16001 | gdb_assert (!fi->fields.empty ()); |
2ddeaf8a | 16002 | if (discr == NULL) |
be2daae6 | 16003 | fi->fields.back ().variant.default_branch = true; |
2ddeaf8a | 16004 | else |
be2daae6 | 16005 | fi->fields.back ().variant.discriminant_value = DW_UNSND (discr); |
2ddeaf8a TT |
16006 | } |
16007 | } | |
16008 | ||
c767944b DJ |
16009 | /* Finish creating a structure or union type, including filling in |
16010 | its members and creating a symbol for it. */ | |
16011 | ||
16012 | static void | |
16013 | process_structure_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16014 | { | |
518817b3 | 16015 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
ca040673 | 16016 | struct die_info *child_die; |
c767944b DJ |
16017 | struct type *type; |
16018 | ||
16019 | type = get_die_type (die, cu); | |
16020 | if (type == NULL) | |
16021 | type = read_structure_type (die, cu); | |
16022 | ||
2ddeaf8a TT |
16023 | /* When reading a DW_TAG_variant_part, we need to notice when we |
16024 | read the discriminant member, so we can record it later in the | |
16025 | discriminant_info. */ | |
16026 | bool is_variant_part = TYPE_FLAG_DISCRIMINATED_UNION (type); | |
16027 | sect_offset discr_offset; | |
3e1d3d8c | 16028 | bool has_template_parameters = false; |
2ddeaf8a TT |
16029 | |
16030 | if (is_variant_part) | |
16031 | { | |
16032 | struct attribute *discr = dwarf2_attr (die, DW_AT_discr, cu); | |
16033 | if (discr == NULL) | |
16034 | { | |
16035 | /* Maybe it's a univariant form, an extension we support. | |
16036 | In this case arrange not to check the offset. */ | |
16037 | is_variant_part = false; | |
16038 | } | |
16039 | else if (attr_form_is_ref (discr)) | |
16040 | { | |
16041 | struct dwarf2_cu *target_cu = cu; | |
16042 | struct die_info *target_die = follow_die_ref (die, discr, &target_cu); | |
16043 | ||
16044 | discr_offset = target_die->sect_off; | |
16045 | } | |
16046 | else | |
16047 | { | |
b98664d3 | 16048 | complaint (_("DW_AT_discr does not have DIE reference form" |
2ddeaf8a TT |
16049 | " - DIE at %s [in module %s]"), |
16050 | sect_offset_str (die->sect_off), | |
16051 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
16052 | is_variant_part = false; | |
16053 | } | |
16054 | } | |
16055 | ||
e142c38c | 16056 | if (die->child != NULL && ! die_is_declaration (die, cu)) |
c906108c SS |
16057 | { |
16058 | struct field_info fi; | |
2f4732b0 | 16059 | std::vector<struct symbol *> template_args; |
c906108c | 16060 | |
639d11d3 | 16061 | child_die = die->child; |
c906108c SS |
16062 | |
16063 | while (child_die && child_die->tag) | |
16064 | { | |
2ddeaf8a | 16065 | handle_struct_member_die (child_die, type, &fi, &template_args, cu); |
34eaf542 | 16066 | |
2ddeaf8a | 16067 | if (is_variant_part && discr_offset == child_die->sect_off) |
be2daae6 | 16068 | fi.fields.back ().variant.is_discriminant = true; |
34eaf542 | 16069 | |
c906108c SS |
16070 | child_die = sibling_die (child_die); |
16071 | } | |
16072 | ||
34eaf542 | 16073 | /* Attach template arguments to type. */ |
2f4732b0 | 16074 | if (!template_args.empty ()) |
34eaf542 | 16075 | { |
3e1d3d8c | 16076 | has_template_parameters = true; |
34eaf542 | 16077 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
2f4732b0 | 16078 | TYPE_N_TEMPLATE_ARGUMENTS (type) = template_args.size (); |
34eaf542 | 16079 | TYPE_TEMPLATE_ARGUMENTS (type) |
8d749320 SM |
16080 | = XOBNEWVEC (&objfile->objfile_obstack, |
16081 | struct symbol *, | |
16082 | TYPE_N_TEMPLATE_ARGUMENTS (type)); | |
34eaf542 | 16083 | memcpy (TYPE_TEMPLATE_ARGUMENTS (type), |
2f4732b0 | 16084 | template_args.data (), |
34eaf542 TT |
16085 | (TYPE_N_TEMPLATE_ARGUMENTS (type) |
16086 | * sizeof (struct symbol *))); | |
34eaf542 TT |
16087 | } |
16088 | ||
c906108c SS |
16089 | /* Attach fields and member functions to the type. */ |
16090 | if (fi.nfields) | |
e7c27a73 | 16091 | dwarf2_attach_fields_to_type (&fi, type, cu); |
be2daae6 | 16092 | if (!fi.fnfieldlists.empty ()) |
c906108c | 16093 | { |
e7c27a73 | 16094 | dwarf2_attach_fn_fields_to_type (&fi, type, cu); |
c906108c | 16095 | |
c5aa993b | 16096 | /* Get the type which refers to the base class (possibly this |
c906108c | 16097 | class itself) which contains the vtable pointer for the current |
0d564a31 DJ |
16098 | class from the DW_AT_containing_type attribute. This use of |
16099 | DW_AT_containing_type is a GNU extension. */ | |
c906108c | 16100 | |
e142c38c | 16101 | if (dwarf2_attr (die, DW_AT_containing_type, cu) != NULL) |
c906108c | 16102 | { |
e7c27a73 | 16103 | struct type *t = die_containing_type (die, cu); |
c906108c | 16104 | |
ae6ae975 | 16105 | set_type_vptr_basetype (type, t); |
c906108c SS |
16106 | if (type == t) |
16107 | { | |
c906108c SS |
16108 | int i; |
16109 | ||
16110 | /* Our own class provides vtbl ptr. */ | |
16111 | for (i = TYPE_NFIELDS (t) - 1; | |
16112 | i >= TYPE_N_BASECLASSES (t); | |
16113 | --i) | |
16114 | { | |
0d5cff50 | 16115 | const char *fieldname = TYPE_FIELD_NAME (t, i); |
c906108c | 16116 | |
1168df01 | 16117 | if (is_vtable_name (fieldname, cu)) |
c906108c | 16118 | { |
ae6ae975 | 16119 | set_type_vptr_fieldno (type, i); |
c906108c SS |
16120 | break; |
16121 | } | |
16122 | } | |
16123 | ||
16124 | /* Complain if virtual function table field not found. */ | |
16125 | if (i < TYPE_N_BASECLASSES (t)) | |
b98664d3 | 16126 | complaint (_("virtual function table pointer " |
3e43a32a | 16127 | "not found when defining class '%s'"), |
e86ca25f | 16128 | TYPE_NAME (type) ? TYPE_NAME (type) : ""); |
c906108c SS |
16129 | } |
16130 | else | |
16131 | { | |
ae6ae975 | 16132 | set_type_vptr_fieldno (type, TYPE_VPTR_FIELDNO (t)); |
c906108c SS |
16133 | } |
16134 | } | |
f6235d4c | 16135 | else if (cu->producer |
61012eef | 16136 | && startswith (cu->producer, "IBM(R) XL C/C++ Advanced Edition")) |
f6235d4c EZ |
16137 | { |
16138 | /* The IBM XLC compiler does not provide direct indication | |
16139 | of the containing type, but the vtable pointer is | |
16140 | always named __vfp. */ | |
16141 | ||
16142 | int i; | |
16143 | ||
16144 | for (i = TYPE_NFIELDS (type) - 1; | |
16145 | i >= TYPE_N_BASECLASSES (type); | |
16146 | --i) | |
16147 | { | |
16148 | if (strcmp (TYPE_FIELD_NAME (type, i), "__vfp") == 0) | |
16149 | { | |
ae6ae975 DE |
16150 | set_type_vptr_fieldno (type, i); |
16151 | set_type_vptr_basetype (type, type); | |
f6235d4c EZ |
16152 | break; |
16153 | } | |
16154 | } | |
16155 | } | |
c906108c | 16156 | } |
98751a41 JK |
16157 | |
16158 | /* Copy fi.typedef_field_list linked list elements content into the | |
16159 | allocated array TYPE_TYPEDEF_FIELD_ARRAY (type). */ | |
be2daae6 | 16160 | if (!fi.typedef_field_list.empty ()) |
98751a41 | 16161 | { |
be2daae6 | 16162 | int count = fi.typedef_field_list.size (); |
98751a41 | 16163 | |
a0d7a4ff | 16164 | ALLOCATE_CPLUS_STRUCT_TYPE (type); |
98751a41 | 16165 | TYPE_TYPEDEF_FIELD_ARRAY (type) |
883fd55a | 16166 | = ((struct decl_field *) |
be2daae6 TT |
16167 | TYPE_ALLOC (type, |
16168 | sizeof (TYPE_TYPEDEF_FIELD (type, 0)) * count)); | |
16169 | TYPE_TYPEDEF_FIELD_COUNT (type) = count; | |
6e70227d | 16170 | |
be2daae6 TT |
16171 | for (int i = 0; i < fi.typedef_field_list.size (); ++i) |
16172 | TYPE_TYPEDEF_FIELD (type, i) = fi.typedef_field_list[i]; | |
98751a41 | 16173 | } |
c767944b | 16174 | |
883fd55a KS |
16175 | /* Copy fi.nested_types_list linked list elements content into the |
16176 | allocated array TYPE_NESTED_TYPES_ARRAY (type). */ | |
be2daae6 | 16177 | if (!fi.nested_types_list.empty () && cu->language != language_ada) |
883fd55a | 16178 | { |
be2daae6 | 16179 | int count = fi.nested_types_list.size (); |
883fd55a KS |
16180 | |
16181 | ALLOCATE_CPLUS_STRUCT_TYPE (type); | |
16182 | TYPE_NESTED_TYPES_ARRAY (type) | |
16183 | = ((struct decl_field *) | |
be2daae6 TT |
16184 | TYPE_ALLOC (type, sizeof (struct decl_field) * count)); |
16185 | TYPE_NESTED_TYPES_COUNT (type) = count; | |
883fd55a | 16186 | |
be2daae6 TT |
16187 | for (int i = 0; i < fi.nested_types_list.size (); ++i) |
16188 | TYPE_NESTED_TYPES_FIELD (type, i) = fi.nested_types_list[i]; | |
883fd55a | 16189 | } |
c906108c | 16190 | } |
63d06c5c | 16191 | |
bb5ed363 | 16192 | quirk_gcc_member_function_pointer (type, objfile); |
c9317f21 TT |
16193 | if (cu->language == language_rust && die->tag == DW_TAG_union_type) |
16194 | cu->rust_unions.push_back (type); | |
0b92b5bb | 16195 | |
90aeadfc DC |
16196 | /* NOTE: carlton/2004-03-16: GCC 3.4 (or at least one of its |
16197 | snapshots) has been known to create a die giving a declaration | |
16198 | for a class that has, as a child, a die giving a definition for a | |
16199 | nested class. So we have to process our children even if the | |
16200 | current die is a declaration. Normally, of course, a declaration | |
16201 | won't have any children at all. */ | |
134d01f1 | 16202 | |
ca040673 DE |
16203 | child_die = die->child; |
16204 | ||
90aeadfc DC |
16205 | while (child_die != NULL && child_die->tag) |
16206 | { | |
16207 | if (child_die->tag == DW_TAG_member | |
16208 | || child_die->tag == DW_TAG_variable | |
34eaf542 TT |
16209 | || child_die->tag == DW_TAG_inheritance |
16210 | || child_die->tag == DW_TAG_template_value_param | |
16211 | || child_die->tag == DW_TAG_template_type_param) | |
134d01f1 | 16212 | { |
90aeadfc | 16213 | /* Do nothing. */ |
134d01f1 | 16214 | } |
90aeadfc DC |
16215 | else |
16216 | process_die (child_die, cu); | |
134d01f1 | 16217 | |
90aeadfc | 16218 | child_die = sibling_die (child_die); |
134d01f1 DJ |
16219 | } |
16220 | ||
fa4028e9 JB |
16221 | /* Do not consider external references. According to the DWARF standard, |
16222 | these DIEs are identified by the fact that they have no byte_size | |
16223 | attribute, and a declaration attribute. */ | |
16224 | if (dwarf2_attr (die, DW_AT_byte_size, cu) != NULL | |
16225 | || !die_is_declaration (die, cu)) | |
3e1d3d8c TT |
16226 | { |
16227 | struct symbol *sym = new_symbol (die, type, cu); | |
16228 | ||
16229 | if (has_template_parameters) | |
16230 | { | |
a776957c TT |
16231 | struct symtab *symtab; |
16232 | if (sym != nullptr) | |
16233 | symtab = symbol_symtab (sym); | |
16234 | else if (cu->line_header != nullptr) | |
16235 | { | |
16236 | /* Any related symtab will do. */ | |
16237 | symtab | |
16238 | = cu->line_header->file_name_at (file_name_index (1))->symtab; | |
16239 | } | |
16240 | else | |
16241 | { | |
16242 | symtab = nullptr; | |
16243 | complaint (_("could not find suitable " | |
16244 | "symtab for template parameter" | |
16245 | " - DIE at %s [in module %s]"), | |
16246 | sect_offset_str (die->sect_off), | |
16247 | objfile_name (objfile)); | |
16248 | } | |
16249 | ||
16250 | if (symtab != nullptr) | |
16251 | { | |
16252 | /* Make sure that the symtab is set on the new symbols. | |
16253 | Even though they don't appear in this symtab directly, | |
16254 | other parts of gdb assume that symbols do, and this is | |
16255 | reasonably true. */ | |
16256 | for (int i = 0; i < TYPE_N_TEMPLATE_ARGUMENTS (type); ++i) | |
16257 | symbol_set_symtab (TYPE_TEMPLATE_ARGUMENT (type, i), symtab); | |
16258 | } | |
3e1d3d8c TT |
16259 | } |
16260 | } | |
134d01f1 DJ |
16261 | } |
16262 | ||
55426c9d JB |
16263 | /* Assuming DIE is an enumeration type, and TYPE is its associated type, |
16264 | update TYPE using some information only available in DIE's children. */ | |
16265 | ||
16266 | static void | |
16267 | update_enumeration_type_from_children (struct die_info *die, | |
16268 | struct type *type, | |
16269 | struct dwarf2_cu *cu) | |
16270 | { | |
60f7655a | 16271 | struct die_info *child_die; |
55426c9d JB |
16272 | int unsigned_enum = 1; |
16273 | int flag_enum = 1; | |
16274 | ULONGEST mask = 0; | |
55426c9d | 16275 | |
8268c778 | 16276 | auto_obstack obstack; |
55426c9d | 16277 | |
60f7655a DE |
16278 | for (child_die = die->child; |
16279 | child_die != NULL && child_die->tag; | |
16280 | child_die = sibling_die (child_die)) | |
55426c9d JB |
16281 | { |
16282 | struct attribute *attr; | |
16283 | LONGEST value; | |
16284 | const gdb_byte *bytes; | |
16285 | struct dwarf2_locexpr_baton *baton; | |
16286 | const char *name; | |
60f7655a | 16287 | |
55426c9d JB |
16288 | if (child_die->tag != DW_TAG_enumerator) |
16289 | continue; | |
16290 | ||
16291 | attr = dwarf2_attr (child_die, DW_AT_const_value, cu); | |
16292 | if (attr == NULL) | |
16293 | continue; | |
16294 | ||
16295 | name = dwarf2_name (child_die, cu); | |
16296 | if (name == NULL) | |
16297 | name = "<anonymous enumerator>"; | |
16298 | ||
16299 | dwarf2_const_value_attr (attr, type, name, &obstack, cu, | |
16300 | &value, &bytes, &baton); | |
16301 | if (value < 0) | |
16302 | { | |
16303 | unsigned_enum = 0; | |
16304 | flag_enum = 0; | |
16305 | } | |
16306 | else if ((mask & value) != 0) | |
16307 | flag_enum = 0; | |
16308 | else | |
16309 | mask |= value; | |
16310 | ||
16311 | /* If we already know that the enum type is neither unsigned, nor | |
16312 | a flag type, no need to look at the rest of the enumerates. */ | |
16313 | if (!unsigned_enum && !flag_enum) | |
16314 | break; | |
55426c9d JB |
16315 | } |
16316 | ||
16317 | if (unsigned_enum) | |
16318 | TYPE_UNSIGNED (type) = 1; | |
16319 | if (flag_enum) | |
16320 | TYPE_FLAG_ENUM (type) = 1; | |
55426c9d JB |
16321 | } |
16322 | ||
134d01f1 DJ |
16323 | /* Given a DW_AT_enumeration_type die, set its type. We do not |
16324 | complete the type's fields yet, or create any symbols. */ | |
c906108c | 16325 | |
f792889a | 16326 | static struct type * |
134d01f1 | 16327 | read_enumeration_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16328 | { |
518817b3 | 16329 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16330 | struct type *type; |
c906108c | 16331 | struct attribute *attr; |
0114d602 | 16332 | const char *name; |
134d01f1 | 16333 | |
348e048f DE |
16334 | /* If the definition of this type lives in .debug_types, read that type. |
16335 | Don't follow DW_AT_specification though, that will take us back up | |
16336 | the chain and we want to go down. */ | |
45e58e77 | 16337 | attr = dwarf2_attr_no_follow (die, DW_AT_signature); |
348e048f DE |
16338 | if (attr) |
16339 | { | |
ac9ec31b | 16340 | type = get_DW_AT_signature_type (die, attr, cu); |
9dc481d3 | 16341 | |
ac9ec31b | 16342 | /* The type's CU may not be the same as CU. |
02142a6c | 16343 | Ensure TYPE is recorded with CU in die_type_hash. */ |
348e048f DE |
16344 | return set_die_type (die, type, cu); |
16345 | } | |
16346 | ||
c906108c SS |
16347 | type = alloc_type (objfile); |
16348 | ||
16349 | TYPE_CODE (type) = TYPE_CODE_ENUM; | |
94af9270 | 16350 | name = dwarf2_full_name (NULL, die, cu); |
39cbfefa | 16351 | if (name != NULL) |
e86ca25f | 16352 | TYPE_NAME (type) = name; |
c906108c | 16353 | |
0626fc76 TT |
16354 | attr = dwarf2_attr (die, DW_AT_type, cu); |
16355 | if (attr != NULL) | |
16356 | { | |
16357 | struct type *underlying_type = die_type (die, cu); | |
16358 | ||
16359 | TYPE_TARGET_TYPE (type) = underlying_type; | |
16360 | } | |
16361 | ||
e142c38c | 16362 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
16363 | if (attr) |
16364 | { | |
16365 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16366 | } | |
16367 | else | |
16368 | { | |
16369 | TYPE_LENGTH (type) = 0; | |
16370 | } | |
16371 | ||
2b4424c3 TT |
16372 | maybe_set_alignment (cu, die, type); |
16373 | ||
137033e9 JB |
16374 | /* The enumeration DIE can be incomplete. In Ada, any type can be |
16375 | declared as private in the package spec, and then defined only | |
16376 | inside the package body. Such types are known as Taft Amendment | |
16377 | Types. When another package uses such a type, an incomplete DIE | |
16378 | may be generated by the compiler. */ | |
02eb380e | 16379 | if (die_is_declaration (die, cu)) |
876cecd0 | 16380 | TYPE_STUB (type) = 1; |
02eb380e | 16381 | |
0626fc76 TT |
16382 | /* Finish the creation of this type by using the enum's children. |
16383 | We must call this even when the underlying type has been provided | |
16384 | so that we can determine if we're looking at a "flag" enum. */ | |
55426c9d JB |
16385 | update_enumeration_type_from_children (die, type, cu); |
16386 | ||
0626fc76 TT |
16387 | /* If this type has an underlying type that is not a stub, then we |
16388 | may use its attributes. We always use the "unsigned" attribute | |
16389 | in this situation, because ordinarily we guess whether the type | |
16390 | is unsigned -- but the guess can be wrong and the underlying type | |
16391 | can tell us the reality. However, we defer to a local size | |
16392 | attribute if one exists, because this lets the compiler override | |
16393 | the underlying type if needed. */ | |
16394 | if (TYPE_TARGET_TYPE (type) != NULL && !TYPE_STUB (TYPE_TARGET_TYPE (type))) | |
16395 | { | |
16396 | TYPE_UNSIGNED (type) = TYPE_UNSIGNED (TYPE_TARGET_TYPE (type)); | |
16397 | if (TYPE_LENGTH (type) == 0) | |
16398 | TYPE_LENGTH (type) = TYPE_LENGTH (TYPE_TARGET_TYPE (type)); | |
2b4424c3 TT |
16399 | if (TYPE_RAW_ALIGN (type) == 0 |
16400 | && TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type)) != 0) | |
16401 | set_type_align (type, TYPE_RAW_ALIGN (TYPE_TARGET_TYPE (type))); | |
0626fc76 TT |
16402 | } |
16403 | ||
3d567982 TT |
16404 | TYPE_DECLARED_CLASS (type) = dwarf2_flag_true_p (die, DW_AT_enum_class, cu); |
16405 | ||
f792889a | 16406 | return set_die_type (die, type, cu); |
134d01f1 DJ |
16407 | } |
16408 | ||
16409 | /* Given a pointer to a die which begins an enumeration, process all | |
16410 | the dies that define the members of the enumeration, and create the | |
16411 | symbol for the enumeration type. | |
16412 | ||
16413 | NOTE: We reverse the order of the element list. */ | |
16414 | ||
16415 | static void | |
16416 | process_enumeration_scope (struct die_info *die, struct dwarf2_cu *cu) | |
16417 | { | |
f792889a | 16418 | struct type *this_type; |
134d01f1 | 16419 | |
f792889a DJ |
16420 | this_type = get_die_type (die, cu); |
16421 | if (this_type == NULL) | |
16422 | this_type = read_enumeration_type (die, cu); | |
9dc481d3 | 16423 | |
639d11d3 | 16424 | if (die->child != NULL) |
c906108c | 16425 | { |
9dc481d3 DE |
16426 | struct die_info *child_die; |
16427 | struct symbol *sym; | |
16428 | struct field *fields = NULL; | |
16429 | int num_fields = 0; | |
15d034d0 | 16430 | const char *name; |
9dc481d3 | 16431 | |
639d11d3 | 16432 | child_die = die->child; |
c906108c SS |
16433 | while (child_die && child_die->tag) |
16434 | { | |
16435 | if (child_die->tag != DW_TAG_enumerator) | |
16436 | { | |
e7c27a73 | 16437 | process_die (child_die, cu); |
c906108c SS |
16438 | } |
16439 | else | |
16440 | { | |
39cbfefa DJ |
16441 | name = dwarf2_name (child_die, cu); |
16442 | if (name) | |
c906108c | 16443 | { |
f792889a | 16444 | sym = new_symbol (child_die, this_type, cu); |
c906108c SS |
16445 | |
16446 | if ((num_fields % DW_FIELD_ALLOC_CHUNK) == 0) | |
16447 | { | |
16448 | fields = (struct field *) | |
16449 | xrealloc (fields, | |
16450 | (num_fields + DW_FIELD_ALLOC_CHUNK) | |
c5aa993b | 16451 | * sizeof (struct field)); |
c906108c SS |
16452 | } |
16453 | ||
3567439c | 16454 | FIELD_NAME (fields[num_fields]) = SYMBOL_LINKAGE_NAME (sym); |
c906108c | 16455 | FIELD_TYPE (fields[num_fields]) = NULL; |
14e75d8e | 16456 | SET_FIELD_ENUMVAL (fields[num_fields], SYMBOL_VALUE (sym)); |
c906108c SS |
16457 | FIELD_BITSIZE (fields[num_fields]) = 0; |
16458 | ||
16459 | num_fields++; | |
16460 | } | |
16461 | } | |
16462 | ||
16463 | child_die = sibling_die (child_die); | |
16464 | } | |
16465 | ||
16466 | if (num_fields) | |
16467 | { | |
f792889a DJ |
16468 | TYPE_NFIELDS (this_type) = num_fields; |
16469 | TYPE_FIELDS (this_type) = (struct field *) | |
16470 | TYPE_ALLOC (this_type, sizeof (struct field) * num_fields); | |
16471 | memcpy (TYPE_FIELDS (this_type), fields, | |
c906108c | 16472 | sizeof (struct field) * num_fields); |
b8c9b27d | 16473 | xfree (fields); |
c906108c | 16474 | } |
c906108c | 16475 | } |
134d01f1 | 16476 | |
6c83ed52 TT |
16477 | /* If we are reading an enum from a .debug_types unit, and the enum |
16478 | is a declaration, and the enum is not the signatured type in the | |
16479 | unit, then we do not want to add a symbol for it. Adding a | |
16480 | symbol would in some cases obscure the true definition of the | |
16481 | enum, giving users an incomplete type when the definition is | |
16482 | actually available. Note that we do not want to do this for all | |
16483 | enums which are just declarations, because C++0x allows forward | |
16484 | enum declarations. */ | |
3019eac3 | 16485 | if (cu->per_cu->is_debug_types |
6c83ed52 TT |
16486 | && die_is_declaration (die, cu)) |
16487 | { | |
52dc124a | 16488 | struct signatured_type *sig_type; |
6c83ed52 | 16489 | |
c0f78cd4 | 16490 | sig_type = (struct signatured_type *) cu->per_cu; |
9c541725 PA |
16491 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
16492 | if (sig_type->type_offset_in_section != die->sect_off) | |
6c83ed52 TT |
16493 | return; |
16494 | } | |
16495 | ||
f792889a | 16496 | new_symbol (die, this_type, cu); |
c906108c SS |
16497 | } |
16498 | ||
16499 | /* Extract all information from a DW_TAG_array_type DIE and put it in | |
16500 | the DIE's type field. For now, this only handles one dimensional | |
16501 | arrays. */ | |
16502 | ||
f792889a | 16503 | static struct type * |
e7c27a73 | 16504 | read_array_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16505 | { |
518817b3 | 16506 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 16507 | struct die_info *child_die; |
7e314c57 | 16508 | struct type *type; |
c906108c | 16509 | struct type *element_type, *range_type, *index_type; |
c906108c | 16510 | struct attribute *attr; |
15d034d0 | 16511 | const char *name; |
a405673c | 16512 | struct dynamic_prop *byte_stride_prop = NULL; |
dc53a7ad | 16513 | unsigned int bit_stride = 0; |
c906108c | 16514 | |
e7c27a73 | 16515 | element_type = die_type (die, cu); |
c906108c | 16516 | |
7e314c57 JK |
16517 | /* The die_type call above may have already set the type for this DIE. */ |
16518 | type = get_die_type (die, cu); | |
16519 | if (type) | |
16520 | return type; | |
16521 | ||
dc53a7ad JB |
16522 | attr = dwarf2_attr (die, DW_AT_byte_stride, cu); |
16523 | if (attr != NULL) | |
a405673c JB |
16524 | { |
16525 | int stride_ok; | |
16526 | ||
16527 | byte_stride_prop | |
16528 | = (struct dynamic_prop *) alloca (sizeof (struct dynamic_prop)); | |
16529 | stride_ok = attr_to_dynamic_prop (attr, die, cu, byte_stride_prop); | |
16530 | if (!stride_ok) | |
16531 | { | |
b98664d3 | 16532 | complaint (_("unable to read array DW_AT_byte_stride " |
9d8780f0 SM |
16533 | " - DIE at %s [in module %s]"), |
16534 | sect_offset_str (die->sect_off), | |
518817b3 | 16535 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a405673c JB |
16536 | /* Ignore this attribute. We will likely not be able to print |
16537 | arrays of this type correctly, but there is little we can do | |
16538 | to help if we cannot read the attribute's value. */ | |
16539 | byte_stride_prop = NULL; | |
16540 | } | |
16541 | } | |
dc53a7ad JB |
16542 | |
16543 | attr = dwarf2_attr (die, DW_AT_bit_stride, cu); | |
16544 | if (attr != NULL) | |
16545 | bit_stride = DW_UNSND (attr); | |
16546 | ||
c906108c SS |
16547 | /* Irix 6.2 native cc creates array types without children for |
16548 | arrays with unspecified length. */ | |
639d11d3 | 16549 | if (die->child == NULL) |
c906108c | 16550 | { |
46bf5051 | 16551 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 16552 | range_type = create_static_range_type (NULL, index_type, 0, -1); |
dc53a7ad | 16553 | type = create_array_type_with_stride (NULL, element_type, range_type, |
a405673c | 16554 | byte_stride_prop, bit_stride); |
f792889a | 16555 | return set_die_type (die, type, cu); |
c906108c SS |
16556 | } |
16557 | ||
791afaa2 | 16558 | std::vector<struct type *> range_types; |
639d11d3 | 16559 | child_die = die->child; |
c906108c SS |
16560 | while (child_die && child_die->tag) |
16561 | { | |
16562 | if (child_die->tag == DW_TAG_subrange_type) | |
16563 | { | |
f792889a | 16564 | struct type *child_type = read_type_die (child_die, cu); |
9a619af0 | 16565 | |
f792889a | 16566 | if (child_type != NULL) |
a02abb62 | 16567 | { |
0963b4bd MS |
16568 | /* The range type was succesfully read. Save it for the |
16569 | array type creation. */ | |
791afaa2 | 16570 | range_types.push_back (child_type); |
a02abb62 | 16571 | } |
c906108c SS |
16572 | } |
16573 | child_die = sibling_die (child_die); | |
16574 | } | |
16575 | ||
16576 | /* Dwarf2 dimensions are output from left to right, create the | |
16577 | necessary array types in backwards order. */ | |
7ca2d3a3 | 16578 | |
c906108c | 16579 | type = element_type; |
7ca2d3a3 DL |
16580 | |
16581 | if (read_array_order (die, cu) == DW_ORD_col_major) | |
16582 | { | |
16583 | int i = 0; | |
9a619af0 | 16584 | |
791afaa2 | 16585 | while (i < range_types.size ()) |
dc53a7ad | 16586 | type = create_array_type_with_stride (NULL, type, range_types[i++], |
a405673c | 16587 | byte_stride_prop, bit_stride); |
7ca2d3a3 DL |
16588 | } |
16589 | else | |
16590 | { | |
791afaa2 | 16591 | size_t ndim = range_types.size (); |
7ca2d3a3 | 16592 | while (ndim-- > 0) |
dc53a7ad | 16593 | type = create_array_type_with_stride (NULL, type, range_types[ndim], |
a405673c | 16594 | byte_stride_prop, bit_stride); |
7ca2d3a3 | 16595 | } |
c906108c | 16596 | |
f5f8a009 EZ |
16597 | /* Understand Dwarf2 support for vector types (like they occur on |
16598 | the PowerPC w/ AltiVec). Gcc just adds another attribute to the | |
16599 | array type. This is not part of the Dwarf2/3 standard yet, but a | |
16600 | custom vendor extension. The main difference between a regular | |
16601 | array and the vector variant is that vectors are passed by value | |
16602 | to functions. */ | |
e142c38c | 16603 | attr = dwarf2_attr (die, DW_AT_GNU_vector, cu); |
f5f8a009 | 16604 | if (attr) |
ea37ba09 | 16605 | make_vector_type (type); |
f5f8a009 | 16606 | |
dbc98a8b KW |
16607 | /* The DIE may have DW_AT_byte_size set. For example an OpenCL |
16608 | implementation may choose to implement triple vectors using this | |
16609 | attribute. */ | |
16610 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
16611 | if (attr) | |
16612 | { | |
16613 | if (DW_UNSND (attr) >= TYPE_LENGTH (type)) | |
16614 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
16615 | else | |
b98664d3 | 16616 | complaint (_("DW_AT_byte_size for array type smaller " |
3e43a32a | 16617 | "than the total size of elements")); |
dbc98a8b KW |
16618 | } |
16619 | ||
39cbfefa DJ |
16620 | name = dwarf2_name (die, cu); |
16621 | if (name) | |
16622 | TYPE_NAME (type) = name; | |
6e70227d | 16623 | |
2b4424c3 TT |
16624 | maybe_set_alignment (cu, die, type); |
16625 | ||
0963b4bd | 16626 | /* Install the type in the die. */ |
7e314c57 JK |
16627 | set_die_type (die, type, cu); |
16628 | ||
16629 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
16630 | set_descriptive_type (type, die, cu); |
16631 | ||
7e314c57 | 16632 | return type; |
c906108c SS |
16633 | } |
16634 | ||
7ca2d3a3 | 16635 | static enum dwarf_array_dim_ordering |
6e70227d | 16636 | read_array_order (struct die_info *die, struct dwarf2_cu *cu) |
7ca2d3a3 DL |
16637 | { |
16638 | struct attribute *attr; | |
16639 | ||
16640 | attr = dwarf2_attr (die, DW_AT_ordering, cu); | |
16641 | ||
aead7601 SM |
16642 | if (attr) |
16643 | return (enum dwarf_array_dim_ordering) DW_SND (attr); | |
7ca2d3a3 | 16644 | |
0963b4bd MS |
16645 | /* GNU F77 is a special case, as at 08/2004 array type info is the |
16646 | opposite order to the dwarf2 specification, but data is still | |
16647 | laid out as per normal fortran. | |
7ca2d3a3 | 16648 | |
0963b4bd MS |
16649 | FIXME: dsl/2004-8-20: If G77 is ever fixed, this will also need |
16650 | version checking. */ | |
7ca2d3a3 | 16651 | |
905e0470 PM |
16652 | if (cu->language == language_fortran |
16653 | && cu->producer && strstr (cu->producer, "GNU F77")) | |
7ca2d3a3 DL |
16654 | { |
16655 | return DW_ORD_row_major; | |
16656 | } | |
16657 | ||
6e70227d | 16658 | switch (cu->language_defn->la_array_ordering) |
7ca2d3a3 DL |
16659 | { |
16660 | case array_column_major: | |
16661 | return DW_ORD_col_major; | |
16662 | case array_row_major: | |
16663 | default: | |
16664 | return DW_ORD_row_major; | |
16665 | }; | |
16666 | } | |
16667 | ||
72019c9c | 16668 | /* Extract all information from a DW_TAG_set_type DIE and put it in |
0963b4bd | 16669 | the DIE's type field. */ |
72019c9c | 16670 | |
f792889a | 16671 | static struct type * |
72019c9c GM |
16672 | read_set_type (struct die_info *die, struct dwarf2_cu *cu) |
16673 | { | |
7e314c57 JK |
16674 | struct type *domain_type, *set_type; |
16675 | struct attribute *attr; | |
f792889a | 16676 | |
7e314c57 JK |
16677 | domain_type = die_type (die, cu); |
16678 | ||
16679 | /* The die_type call above may have already set the type for this DIE. */ | |
16680 | set_type = get_die_type (die, cu); | |
16681 | if (set_type) | |
16682 | return set_type; | |
16683 | ||
16684 | set_type = create_set_type (NULL, domain_type); | |
16685 | ||
16686 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); | |
d09039dd PM |
16687 | if (attr) |
16688 | TYPE_LENGTH (set_type) = DW_UNSND (attr); | |
7e314c57 | 16689 | |
2b4424c3 TT |
16690 | maybe_set_alignment (cu, die, set_type); |
16691 | ||
f792889a | 16692 | return set_die_type (die, set_type, cu); |
72019c9c | 16693 | } |
7ca2d3a3 | 16694 | |
0971de02 TT |
16695 | /* A helper for read_common_block that creates a locexpr baton. |
16696 | SYM is the symbol which we are marking as computed. | |
16697 | COMMON_DIE is the DIE for the common block. | |
16698 | COMMON_LOC is the location expression attribute for the common | |
16699 | block itself. | |
16700 | MEMBER_LOC is the location expression attribute for the particular | |
16701 | member of the common block that we are processing. | |
16702 | CU is the CU from which the above come. */ | |
16703 | ||
16704 | static void | |
16705 | mark_common_block_symbol_computed (struct symbol *sym, | |
16706 | struct die_info *common_die, | |
16707 | struct attribute *common_loc, | |
16708 | struct attribute *member_loc, | |
16709 | struct dwarf2_cu *cu) | |
16710 | { | |
518817b3 SM |
16711 | struct dwarf2_per_objfile *dwarf2_per_objfile |
16712 | = cu->per_cu->dwarf2_per_objfile; | |
0971de02 TT |
16713 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
16714 | struct dwarf2_locexpr_baton *baton; | |
16715 | gdb_byte *ptr; | |
16716 | unsigned int cu_off; | |
16717 | enum bfd_endian byte_order = gdbarch_byte_order (get_objfile_arch (objfile)); | |
16718 | LONGEST offset = 0; | |
16719 | ||
16720 | gdb_assert (common_loc && member_loc); | |
16721 | gdb_assert (attr_form_is_block (common_loc)); | |
16722 | gdb_assert (attr_form_is_block (member_loc) | |
16723 | || attr_form_is_constant (member_loc)); | |
16724 | ||
8d749320 | 16725 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
0971de02 TT |
16726 | baton->per_cu = cu->per_cu; |
16727 | gdb_assert (baton->per_cu); | |
16728 | ||
16729 | baton->size = 5 /* DW_OP_call4 */ + 1 /* DW_OP_plus */; | |
16730 | ||
16731 | if (attr_form_is_constant (member_loc)) | |
16732 | { | |
16733 | offset = dwarf2_get_attr_constant_value (member_loc, 0); | |
16734 | baton->size += 1 /* DW_OP_addr */ + cu->header.addr_size; | |
16735 | } | |
16736 | else | |
16737 | baton->size += DW_BLOCK (member_loc)->size; | |
16738 | ||
224c3ddb | 16739 | ptr = (gdb_byte *) obstack_alloc (&objfile->objfile_obstack, baton->size); |
0971de02 TT |
16740 | baton->data = ptr; |
16741 | ||
16742 | *ptr++ = DW_OP_call4; | |
9c541725 | 16743 | cu_off = common_die->sect_off - cu->per_cu->sect_off; |
0971de02 TT |
16744 | store_unsigned_integer (ptr, 4, byte_order, cu_off); |
16745 | ptr += 4; | |
16746 | ||
16747 | if (attr_form_is_constant (member_loc)) | |
16748 | { | |
16749 | *ptr++ = DW_OP_addr; | |
16750 | store_unsigned_integer (ptr, cu->header.addr_size, byte_order, offset); | |
16751 | ptr += cu->header.addr_size; | |
16752 | } | |
16753 | else | |
16754 | { | |
16755 | /* We have to copy the data here, because DW_OP_call4 will only | |
16756 | use a DW_AT_location attribute. */ | |
16757 | memcpy (ptr, DW_BLOCK (member_loc)->data, DW_BLOCK (member_loc)->size); | |
16758 | ptr += DW_BLOCK (member_loc)->size; | |
16759 | } | |
16760 | ||
16761 | *ptr++ = DW_OP_plus; | |
16762 | gdb_assert (ptr - baton->data == baton->size); | |
16763 | ||
0971de02 | 16764 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 16765 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
0971de02 TT |
16766 | } |
16767 | ||
4357ac6c TT |
16768 | /* Create appropriate locally-scoped variables for all the |
16769 | DW_TAG_common_block entries. Also create a struct common_block | |
16770 | listing all such variables for `info common'. COMMON_BLOCK_DOMAIN | |
16771 | is used to sepate the common blocks name namespace from regular | |
16772 | variable names. */ | |
c906108c SS |
16773 | |
16774 | static void | |
e7c27a73 | 16775 | read_common_block (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 16776 | { |
0971de02 TT |
16777 | struct attribute *attr; |
16778 | ||
16779 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
16780 | if (attr) | |
16781 | { | |
16782 | /* Support the .debug_loc offsets. */ | |
16783 | if (attr_form_is_block (attr)) | |
16784 | { | |
16785 | /* Ok. */ | |
16786 | } | |
16787 | else if (attr_form_is_section_offset (attr)) | |
16788 | { | |
16789 | dwarf2_complex_location_expr_complaint (); | |
16790 | attr = NULL; | |
16791 | } | |
16792 | else | |
16793 | { | |
16794 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
16795 | "common block member"); | |
16796 | attr = NULL; | |
16797 | } | |
16798 | } | |
16799 | ||
639d11d3 | 16800 | if (die->child != NULL) |
c906108c | 16801 | { |
518817b3 | 16802 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
4357ac6c TT |
16803 | struct die_info *child_die; |
16804 | size_t n_entries = 0, size; | |
16805 | struct common_block *common_block; | |
16806 | struct symbol *sym; | |
74ac6d43 | 16807 | |
4357ac6c TT |
16808 | for (child_die = die->child; |
16809 | child_die && child_die->tag; | |
16810 | child_die = sibling_die (child_die)) | |
16811 | ++n_entries; | |
16812 | ||
16813 | size = (sizeof (struct common_block) | |
16814 | + (n_entries - 1) * sizeof (struct symbol *)); | |
224c3ddb SM |
16815 | common_block |
16816 | = (struct common_block *) obstack_alloc (&objfile->objfile_obstack, | |
16817 | size); | |
4357ac6c TT |
16818 | memset (common_block->contents, 0, n_entries * sizeof (struct symbol *)); |
16819 | common_block->n_entries = 0; | |
16820 | ||
16821 | for (child_die = die->child; | |
16822 | child_die && child_die->tag; | |
16823 | child_die = sibling_die (child_die)) | |
16824 | { | |
16825 | /* Create the symbol in the DW_TAG_common_block block in the current | |
16826 | symbol scope. */ | |
e7c27a73 | 16827 | sym = new_symbol (child_die, NULL, cu); |
0971de02 TT |
16828 | if (sym != NULL) |
16829 | { | |
16830 | struct attribute *member_loc; | |
16831 | ||
16832 | common_block->contents[common_block->n_entries++] = sym; | |
16833 | ||
16834 | member_loc = dwarf2_attr (child_die, DW_AT_data_member_location, | |
16835 | cu); | |
16836 | if (member_loc) | |
16837 | { | |
16838 | /* GDB has handled this for a long time, but it is | |
16839 | not specified by DWARF. It seems to have been | |
16840 | emitted by gfortran at least as recently as: | |
16841 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23057. */ | |
b98664d3 | 16842 | complaint (_("Variable in common block has " |
0971de02 | 16843 | "DW_AT_data_member_location " |
9d8780f0 SM |
16844 | "- DIE at %s [in module %s]"), |
16845 | sect_offset_str (child_die->sect_off), | |
518817b3 | 16846 | objfile_name (objfile)); |
0971de02 TT |
16847 | |
16848 | if (attr_form_is_section_offset (member_loc)) | |
16849 | dwarf2_complex_location_expr_complaint (); | |
16850 | else if (attr_form_is_constant (member_loc) | |
16851 | || attr_form_is_block (member_loc)) | |
16852 | { | |
16853 | if (attr) | |
16854 | mark_common_block_symbol_computed (sym, die, attr, | |
16855 | member_loc, cu); | |
16856 | } | |
16857 | else | |
16858 | dwarf2_complex_location_expr_complaint (); | |
16859 | } | |
16860 | } | |
c906108c | 16861 | } |
4357ac6c TT |
16862 | |
16863 | sym = new_symbol (die, objfile_type (objfile)->builtin_void, cu); | |
16864 | SYMBOL_VALUE_COMMON_BLOCK (sym) = common_block; | |
c906108c SS |
16865 | } |
16866 | } | |
16867 | ||
0114d602 | 16868 | /* Create a type for a C++ namespace. */ |
d9fa45fe | 16869 | |
0114d602 DJ |
16870 | static struct type * |
16871 | read_namespace_type (struct die_info *die, struct dwarf2_cu *cu) | |
d9fa45fe | 16872 | { |
518817b3 | 16873 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16874 | const char *previous_prefix, *name; |
9219021c | 16875 | int is_anonymous; |
0114d602 DJ |
16876 | struct type *type; |
16877 | ||
16878 | /* For extensions, reuse the type of the original namespace. */ | |
16879 | if (dwarf2_attr (die, DW_AT_extension, cu) != NULL) | |
16880 | { | |
16881 | struct die_info *ext_die; | |
16882 | struct dwarf2_cu *ext_cu = cu; | |
9a619af0 | 16883 | |
0114d602 DJ |
16884 | ext_die = dwarf2_extension (die, &ext_cu); |
16885 | type = read_type_die (ext_die, ext_cu); | |
9dc481d3 DE |
16886 | |
16887 | /* EXT_CU may not be the same as CU. | |
02142a6c | 16888 | Ensure TYPE is recorded with CU in die_type_hash. */ |
0114d602 DJ |
16889 | return set_die_type (die, type, cu); |
16890 | } | |
9219021c | 16891 | |
e142c38c | 16892 | name = namespace_name (die, &is_anonymous, cu); |
9219021c DC |
16893 | |
16894 | /* Now build the name of the current namespace. */ | |
16895 | ||
0114d602 DJ |
16896 | previous_prefix = determine_prefix (die, cu); |
16897 | if (previous_prefix[0] != '\0') | |
16898 | name = typename_concat (&objfile->objfile_obstack, | |
f55ee35c | 16899 | previous_prefix, name, 0, cu); |
0114d602 DJ |
16900 | |
16901 | /* Create the type. */ | |
19f392bc | 16902 | type = init_type (objfile, TYPE_CODE_NAMESPACE, 0, name); |
0114d602 | 16903 | |
60531b24 | 16904 | return set_die_type (die, type, cu); |
0114d602 DJ |
16905 | } |
16906 | ||
22cee43f | 16907 | /* Read a namespace scope. */ |
0114d602 DJ |
16908 | |
16909 | static void | |
16910 | read_namespace (struct die_info *die, struct dwarf2_cu *cu) | |
16911 | { | |
518817b3 | 16912 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 16913 | int is_anonymous; |
9219021c | 16914 | |
5c4e30ca DC |
16915 | /* Add a symbol associated to this if we haven't seen the namespace |
16916 | before. Also, add a using directive if it's an anonymous | |
16917 | namespace. */ | |
9219021c | 16918 | |
f2f0e013 | 16919 | if (dwarf2_attr (die, DW_AT_extension, cu) == NULL) |
5c4e30ca DC |
16920 | { |
16921 | struct type *type; | |
16922 | ||
0114d602 | 16923 | type = read_type_die (die, cu); |
e7c27a73 | 16924 | new_symbol (die, type, cu); |
5c4e30ca | 16925 | |
e8e80198 | 16926 | namespace_name (die, &is_anonymous, cu); |
5c4e30ca | 16927 | if (is_anonymous) |
0114d602 DJ |
16928 | { |
16929 | const char *previous_prefix = determine_prefix (die, cu); | |
9a619af0 | 16930 | |
eb1e02fd | 16931 | std::vector<const char *> excludes; |
804d2729 | 16932 | add_using_directive (using_directives (cu), |
22cee43f | 16933 | previous_prefix, TYPE_NAME (type), NULL, |
eb1e02fd | 16934 | NULL, excludes, 0, &objfile->objfile_obstack); |
0114d602 | 16935 | } |
5c4e30ca | 16936 | } |
9219021c | 16937 | |
639d11d3 | 16938 | if (die->child != NULL) |
d9fa45fe | 16939 | { |
639d11d3 | 16940 | struct die_info *child_die = die->child; |
6e70227d | 16941 | |
d9fa45fe DC |
16942 | while (child_die && child_die->tag) |
16943 | { | |
e7c27a73 | 16944 | process_die (child_die, cu); |
d9fa45fe DC |
16945 | child_die = sibling_die (child_die); |
16946 | } | |
16947 | } | |
38d518c9 EZ |
16948 | } |
16949 | ||
f55ee35c JK |
16950 | /* Read a Fortran module as type. This DIE can be only a declaration used for |
16951 | imported module. Still we need that type as local Fortran "use ... only" | |
16952 | declaration imports depend on the created type in determine_prefix. */ | |
16953 | ||
16954 | static struct type * | |
16955 | read_module_type (struct die_info *die, struct dwarf2_cu *cu) | |
16956 | { | |
518817b3 | 16957 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
15d034d0 | 16958 | const char *module_name; |
f55ee35c JK |
16959 | struct type *type; |
16960 | ||
16961 | module_name = dwarf2_name (die, cu); | |
19f392bc | 16962 | type = init_type (objfile, TYPE_CODE_MODULE, 0, module_name); |
f55ee35c | 16963 | |
f55ee35c JK |
16964 | return set_die_type (die, type, cu); |
16965 | } | |
16966 | ||
5d7cb8df JK |
16967 | /* Read a Fortran module. */ |
16968 | ||
16969 | static void | |
16970 | read_module (struct die_info *die, struct dwarf2_cu *cu) | |
16971 | { | |
16972 | struct die_info *child_die = die->child; | |
530e8392 KB |
16973 | struct type *type; |
16974 | ||
16975 | type = read_type_die (die, cu); | |
16976 | new_symbol (die, type, cu); | |
5d7cb8df | 16977 | |
5d7cb8df JK |
16978 | while (child_die && child_die->tag) |
16979 | { | |
16980 | process_die (child_die, cu); | |
16981 | child_die = sibling_die (child_die); | |
16982 | } | |
16983 | } | |
16984 | ||
38d518c9 EZ |
16985 | /* Return the name of the namespace represented by DIE. Set |
16986 | *IS_ANONYMOUS to tell whether or not the namespace is an anonymous | |
16987 | namespace. */ | |
16988 | ||
16989 | static const char * | |
e142c38c | 16990 | namespace_name (struct die_info *die, int *is_anonymous, struct dwarf2_cu *cu) |
38d518c9 EZ |
16991 | { |
16992 | struct die_info *current_die; | |
16993 | const char *name = NULL; | |
16994 | ||
16995 | /* Loop through the extensions until we find a name. */ | |
16996 | ||
16997 | for (current_die = die; | |
16998 | current_die != NULL; | |
f2f0e013 | 16999 | current_die = dwarf2_extension (die, &cu)) |
38d518c9 | 17000 | { |
96553a0c DE |
17001 | /* We don't use dwarf2_name here so that we can detect the absence |
17002 | of a name -> anonymous namespace. */ | |
7d45c7c3 | 17003 | name = dwarf2_string_attr (die, DW_AT_name, cu); |
96553a0c | 17004 | |
38d518c9 EZ |
17005 | if (name != NULL) |
17006 | break; | |
17007 | } | |
17008 | ||
17009 | /* Is it an anonymous namespace? */ | |
17010 | ||
17011 | *is_anonymous = (name == NULL); | |
17012 | if (*is_anonymous) | |
2b1dbab0 | 17013 | name = CP_ANONYMOUS_NAMESPACE_STR; |
38d518c9 EZ |
17014 | |
17015 | return name; | |
d9fa45fe DC |
17016 | } |
17017 | ||
c906108c SS |
17018 | /* Extract all information from a DW_TAG_pointer_type DIE and add to |
17019 | the user defined type vector. */ | |
17020 | ||
f792889a | 17021 | static struct type * |
e7c27a73 | 17022 | read_tag_pointer_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17023 | { |
518817b3 SM |
17024 | struct gdbarch *gdbarch |
17025 | = get_objfile_arch (cu->per_cu->dwarf2_per_objfile->objfile); | |
e7c27a73 | 17026 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 17027 | struct type *type; |
8b2dbe47 KB |
17028 | struct attribute *attr_byte_size; |
17029 | struct attribute *attr_address_class; | |
17030 | int byte_size, addr_class; | |
7e314c57 JK |
17031 | struct type *target_type; |
17032 | ||
17033 | target_type = die_type (die, cu); | |
c906108c | 17034 | |
7e314c57 JK |
17035 | /* The die_type call above may have already set the type for this DIE. */ |
17036 | type = get_die_type (die, cu); | |
17037 | if (type) | |
17038 | return type; | |
17039 | ||
17040 | type = lookup_pointer_type (target_type); | |
8b2dbe47 | 17041 | |
e142c38c | 17042 | attr_byte_size = dwarf2_attr (die, DW_AT_byte_size, cu); |
8b2dbe47 KB |
17043 | if (attr_byte_size) |
17044 | byte_size = DW_UNSND (attr_byte_size); | |
c906108c | 17045 | else |
8b2dbe47 KB |
17046 | byte_size = cu_header->addr_size; |
17047 | ||
e142c38c | 17048 | attr_address_class = dwarf2_attr (die, DW_AT_address_class, cu); |
8b2dbe47 KB |
17049 | if (attr_address_class) |
17050 | addr_class = DW_UNSND (attr_address_class); | |
17051 | else | |
17052 | addr_class = DW_ADDR_none; | |
17053 | ||
2b4424c3 TT |
17054 | ULONGEST alignment = get_alignment (cu, die); |
17055 | ||
17056 | /* If the pointer size, alignment, or address class is different | |
17057 | than the default, create a type variant marked as such and set | |
17058 | the length accordingly. */ | |
17059 | if (TYPE_LENGTH (type) != byte_size | |
17060 | || (alignment != 0 && TYPE_RAW_ALIGN (type) != 0 | |
17061 | && alignment != TYPE_RAW_ALIGN (type)) | |
17062 | || addr_class != DW_ADDR_none) | |
c906108c | 17063 | { |
5e2b427d | 17064 | if (gdbarch_address_class_type_flags_p (gdbarch)) |
8b2dbe47 KB |
17065 | { |
17066 | int type_flags; | |
17067 | ||
849957d9 | 17068 | type_flags = gdbarch_address_class_type_flags |
5e2b427d | 17069 | (gdbarch, byte_size, addr_class); |
876cecd0 TT |
17070 | gdb_assert ((type_flags & ~TYPE_INSTANCE_FLAG_ADDRESS_CLASS_ALL) |
17071 | == 0); | |
8b2dbe47 KB |
17072 | type = make_type_with_address_space (type, type_flags); |
17073 | } | |
17074 | else if (TYPE_LENGTH (type) != byte_size) | |
17075 | { | |
b98664d3 | 17076 | complaint (_("invalid pointer size %d"), byte_size); |
8b2dbe47 | 17077 | } |
2b4424c3 TT |
17078 | else if (TYPE_RAW_ALIGN (type) != alignment) |
17079 | { | |
b98664d3 | 17080 | complaint (_("Invalid DW_AT_alignment" |
2b4424c3 TT |
17081 | " - DIE at %s [in module %s]"), |
17082 | sect_offset_str (die->sect_off), | |
17083 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17084 | } | |
6e70227d | 17085 | else |
9a619af0 MS |
17086 | { |
17087 | /* Should we also complain about unhandled address classes? */ | |
17088 | } | |
c906108c | 17089 | } |
8b2dbe47 KB |
17090 | |
17091 | TYPE_LENGTH (type) = byte_size; | |
2b4424c3 | 17092 | set_type_align (type, alignment); |
f792889a | 17093 | return set_die_type (die, type, cu); |
c906108c SS |
17094 | } |
17095 | ||
17096 | /* Extract all information from a DW_TAG_ptr_to_member_type DIE and add to | |
17097 | the user defined type vector. */ | |
17098 | ||
f792889a | 17099 | static struct type * |
e7c27a73 | 17100 | read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c SS |
17101 | { |
17102 | struct type *type; | |
17103 | struct type *to_type; | |
17104 | struct type *domain; | |
17105 | ||
e7c27a73 DJ |
17106 | to_type = die_type (die, cu); |
17107 | domain = die_containing_type (die, cu); | |
0d5de010 | 17108 | |
7e314c57 JK |
17109 | /* The calls above may have already set the type for this DIE. */ |
17110 | type = get_die_type (die, cu); | |
17111 | if (type) | |
17112 | return type; | |
17113 | ||
0d5de010 DJ |
17114 | if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_METHOD) |
17115 | type = lookup_methodptr_type (to_type); | |
7078baeb TT |
17116 | else if (TYPE_CODE (check_typedef (to_type)) == TYPE_CODE_FUNC) |
17117 | { | |
518817b3 SM |
17118 | struct type *new_type |
17119 | = alloc_type (cu->per_cu->dwarf2_per_objfile->objfile); | |
7078baeb TT |
17120 | |
17121 | smash_to_method_type (new_type, domain, TYPE_TARGET_TYPE (to_type), | |
17122 | TYPE_FIELDS (to_type), TYPE_NFIELDS (to_type), | |
17123 | TYPE_VARARGS (to_type)); | |
17124 | type = lookup_methodptr_type (new_type); | |
17125 | } | |
0d5de010 DJ |
17126 | else |
17127 | type = lookup_memberptr_type (to_type, domain); | |
c906108c | 17128 | |
f792889a | 17129 | return set_die_type (die, type, cu); |
c906108c SS |
17130 | } |
17131 | ||
4297a3f0 | 17132 | /* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to |
c906108c SS |
17133 | the user defined type vector. */ |
17134 | ||
f792889a | 17135 | static struct type * |
4297a3f0 AV |
17136 | read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, |
17137 | enum type_code refcode) | |
c906108c | 17138 | { |
e7c27a73 | 17139 | struct comp_unit_head *cu_header = &cu->header; |
7e314c57 | 17140 | struct type *type, *target_type; |
c906108c SS |
17141 | struct attribute *attr; |
17142 | ||
4297a3f0 AV |
17143 | gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); |
17144 | ||
7e314c57 JK |
17145 | target_type = die_type (die, cu); |
17146 | ||
17147 | /* The die_type call above may have already set the type for this DIE. */ | |
17148 | type = get_die_type (die, cu); | |
17149 | if (type) | |
17150 | return type; | |
17151 | ||
4297a3f0 | 17152 | type = lookup_reference_type (target_type, refcode); |
e142c38c | 17153 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17154 | if (attr) |
17155 | { | |
17156 | TYPE_LENGTH (type) = DW_UNSND (attr); | |
17157 | } | |
17158 | else | |
17159 | { | |
107d2387 | 17160 | TYPE_LENGTH (type) = cu_header->addr_size; |
c906108c | 17161 | } |
2b4424c3 | 17162 | maybe_set_alignment (cu, die, type); |
f792889a | 17163 | return set_die_type (die, type, cu); |
c906108c SS |
17164 | } |
17165 | ||
cf363f18 MW |
17166 | /* Add the given cv-qualifiers to the element type of the array. GCC |
17167 | outputs DWARF type qualifiers that apply to an array, not the | |
17168 | element type. But GDB relies on the array element type to carry | |
17169 | the cv-qualifiers. This mimics section 6.7.3 of the C99 | |
17170 | specification. */ | |
17171 | ||
17172 | static struct type * | |
17173 | add_array_cv_type (struct die_info *die, struct dwarf2_cu *cu, | |
17174 | struct type *base_type, int cnst, int voltl) | |
17175 | { | |
17176 | struct type *el_type, *inner_array; | |
17177 | ||
17178 | base_type = copy_type (base_type); | |
17179 | inner_array = base_type; | |
17180 | ||
17181 | while (TYPE_CODE (TYPE_TARGET_TYPE (inner_array)) == TYPE_CODE_ARRAY) | |
17182 | { | |
17183 | TYPE_TARGET_TYPE (inner_array) = | |
17184 | copy_type (TYPE_TARGET_TYPE (inner_array)); | |
17185 | inner_array = TYPE_TARGET_TYPE (inner_array); | |
17186 | } | |
17187 | ||
17188 | el_type = TYPE_TARGET_TYPE (inner_array); | |
17189 | cnst |= TYPE_CONST (el_type); | |
17190 | voltl |= TYPE_VOLATILE (el_type); | |
17191 | TYPE_TARGET_TYPE (inner_array) = make_cv_type (cnst, voltl, el_type, NULL); | |
17192 | ||
17193 | return set_die_type (die, base_type, cu); | |
17194 | } | |
17195 | ||
f792889a | 17196 | static struct type * |
e7c27a73 | 17197 | read_tag_const_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17198 | { |
f792889a | 17199 | struct type *base_type, *cv_type; |
c906108c | 17200 | |
e7c27a73 | 17201 | base_type = die_type (die, cu); |
7e314c57 JK |
17202 | |
17203 | /* The die_type call above may have already set the type for this DIE. */ | |
17204 | cv_type = get_die_type (die, cu); | |
17205 | if (cv_type) | |
17206 | return cv_type; | |
17207 | ||
2f608a3a KW |
17208 | /* In case the const qualifier is applied to an array type, the element type |
17209 | is so qualified, not the array type (section 6.7.3 of C99). */ | |
17210 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
cf363f18 | 17211 | return add_array_cv_type (die, cu, base_type, 1, 0); |
2f608a3a | 17212 | |
f792889a DJ |
17213 | cv_type = make_cv_type (1, TYPE_VOLATILE (base_type), base_type, 0); |
17214 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17215 | } |
17216 | ||
f792889a | 17217 | static struct type * |
e7c27a73 | 17218 | read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17219 | { |
f792889a | 17220 | struct type *base_type, *cv_type; |
c906108c | 17221 | |
e7c27a73 | 17222 | base_type = die_type (die, cu); |
7e314c57 JK |
17223 | |
17224 | /* The die_type call above may have already set the type for this DIE. */ | |
17225 | cv_type = get_die_type (die, cu); | |
17226 | if (cv_type) | |
17227 | return cv_type; | |
17228 | ||
cf363f18 MW |
17229 | /* In case the volatile qualifier is applied to an array type, the |
17230 | element type is so qualified, not the array type (section 6.7.3 | |
17231 | of C99). */ | |
17232 | if (TYPE_CODE (base_type) == TYPE_CODE_ARRAY) | |
17233 | return add_array_cv_type (die, cu, base_type, 0, 1); | |
17234 | ||
f792889a DJ |
17235 | cv_type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0); |
17236 | return set_die_type (die, cv_type, cu); | |
c906108c SS |
17237 | } |
17238 | ||
06d66ee9 TT |
17239 | /* Handle DW_TAG_restrict_type. */ |
17240 | ||
17241 | static struct type * | |
17242 | read_tag_restrict_type (struct die_info *die, struct dwarf2_cu *cu) | |
17243 | { | |
17244 | struct type *base_type, *cv_type; | |
17245 | ||
17246 | base_type = die_type (die, cu); | |
17247 | ||
17248 | /* The die_type call above may have already set the type for this DIE. */ | |
17249 | cv_type = get_die_type (die, cu); | |
17250 | if (cv_type) | |
17251 | return cv_type; | |
17252 | ||
17253 | cv_type = make_restrict_type (base_type); | |
17254 | return set_die_type (die, cv_type, cu); | |
17255 | } | |
17256 | ||
a2c2acaf MW |
17257 | /* Handle DW_TAG_atomic_type. */ |
17258 | ||
17259 | static struct type * | |
17260 | read_tag_atomic_type (struct die_info *die, struct dwarf2_cu *cu) | |
17261 | { | |
17262 | struct type *base_type, *cv_type; | |
17263 | ||
17264 | base_type = die_type (die, cu); | |
17265 | ||
17266 | /* The die_type call above may have already set the type for this DIE. */ | |
17267 | cv_type = get_die_type (die, cu); | |
17268 | if (cv_type) | |
17269 | return cv_type; | |
17270 | ||
17271 | cv_type = make_atomic_type (base_type); | |
17272 | return set_die_type (die, cv_type, cu); | |
17273 | } | |
17274 | ||
c906108c SS |
17275 | /* Extract all information from a DW_TAG_string_type DIE and add to |
17276 | the user defined type vector. It isn't really a user defined type, | |
17277 | but it behaves like one, with other DIE's using an AT_user_def_type | |
17278 | attribute to reference it. */ | |
17279 | ||
f792889a | 17280 | static struct type * |
e7c27a73 | 17281 | read_tag_string_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17282 | { |
518817b3 | 17283 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
3b7538c0 | 17284 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c SS |
17285 | struct type *type, *range_type, *index_type, *char_type; |
17286 | struct attribute *attr; | |
17287 | unsigned int length; | |
17288 | ||
e142c38c | 17289 | attr = dwarf2_attr (die, DW_AT_string_length, cu); |
c906108c SS |
17290 | if (attr) |
17291 | { | |
17292 | length = DW_UNSND (attr); | |
17293 | } | |
17294 | else | |
17295 | { | |
0963b4bd | 17296 | /* Check for the DW_AT_byte_size attribute. */ |
e142c38c | 17297 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
b21b22e0 PS |
17298 | if (attr) |
17299 | { | |
17300 | length = DW_UNSND (attr); | |
17301 | } | |
17302 | else | |
17303 | { | |
17304 | length = 1; | |
17305 | } | |
c906108c | 17306 | } |
6ccb9162 | 17307 | |
46bf5051 | 17308 | index_type = objfile_type (objfile)->builtin_int; |
0c9c3474 | 17309 | range_type = create_static_range_type (NULL, index_type, 1, length); |
3b7538c0 UW |
17310 | char_type = language_string_char_type (cu->language_defn, gdbarch); |
17311 | type = create_string_type (NULL, char_type, range_type); | |
6ccb9162 | 17312 | |
f792889a | 17313 | return set_die_type (die, type, cu); |
c906108c SS |
17314 | } |
17315 | ||
4d804846 JB |
17316 | /* Assuming that DIE corresponds to a function, returns nonzero |
17317 | if the function is prototyped. */ | |
17318 | ||
17319 | static int | |
17320 | prototyped_function_p (struct die_info *die, struct dwarf2_cu *cu) | |
17321 | { | |
17322 | struct attribute *attr; | |
17323 | ||
17324 | attr = dwarf2_attr (die, DW_AT_prototyped, cu); | |
17325 | if (attr && (DW_UNSND (attr) != 0)) | |
17326 | return 1; | |
17327 | ||
17328 | /* The DWARF standard implies that the DW_AT_prototyped attribute | |
17329 | is only meaninful for C, but the concept also extends to other | |
17330 | languages that allow unprototyped functions (Eg: Objective C). | |
17331 | For all other languages, assume that functions are always | |
17332 | prototyped. */ | |
17333 | if (cu->language != language_c | |
17334 | && cu->language != language_objc | |
17335 | && cu->language != language_opencl) | |
17336 | return 1; | |
17337 | ||
17338 | /* RealView does not emit DW_AT_prototyped. We can not distinguish | |
17339 | prototyped and unprototyped functions; default to prototyped, | |
17340 | since that is more common in modern code (and RealView warns | |
17341 | about unprototyped functions). */ | |
17342 | if (producer_is_realview (cu->producer)) | |
17343 | return 1; | |
17344 | ||
17345 | return 0; | |
17346 | } | |
17347 | ||
c906108c SS |
17348 | /* Handle DIES due to C code like: |
17349 | ||
17350 | struct foo | |
c5aa993b JM |
17351 | { |
17352 | int (*funcp)(int a, long l); | |
17353 | int b; | |
17354 | }; | |
c906108c | 17355 | |
0963b4bd | 17356 | ('funcp' generates a DW_TAG_subroutine_type DIE). */ |
c906108c | 17357 | |
f792889a | 17358 | static struct type * |
e7c27a73 | 17359 | read_subroutine_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17360 | { |
518817b3 | 17361 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0963b4bd MS |
17362 | struct type *type; /* Type that this function returns. */ |
17363 | struct type *ftype; /* Function that returns above type. */ | |
c906108c SS |
17364 | struct attribute *attr; |
17365 | ||
e7c27a73 | 17366 | type = die_type (die, cu); |
7e314c57 JK |
17367 | |
17368 | /* The die_type call above may have already set the type for this DIE. */ | |
17369 | ftype = get_die_type (die, cu); | |
17370 | if (ftype) | |
17371 | return ftype; | |
17372 | ||
0c8b41f1 | 17373 | ftype = lookup_function_type (type); |
c906108c | 17374 | |
4d804846 | 17375 | if (prototyped_function_p (die, cu)) |
a6c727b2 | 17376 | TYPE_PROTOTYPED (ftype) = 1; |
c906108c | 17377 | |
c055b101 CV |
17378 | /* Store the calling convention in the type if it's available in |
17379 | the subroutine die. Otherwise set the calling convention to | |
17380 | the default value DW_CC_normal. */ | |
17381 | attr = dwarf2_attr (die, DW_AT_calling_convention, cu); | |
54fcddd0 UW |
17382 | if (attr) |
17383 | TYPE_CALLING_CONVENTION (ftype) = DW_UNSND (attr); | |
17384 | else if (cu->producer && strstr (cu->producer, "IBM XL C for OpenCL")) | |
17385 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_GDB_IBM_OpenCL; | |
17386 | else | |
17387 | TYPE_CALLING_CONVENTION (ftype) = DW_CC_normal; | |
76c10ea2 | 17388 | |
743649fd MW |
17389 | /* Record whether the function returns normally to its caller or not |
17390 | if the DWARF producer set that information. */ | |
17391 | attr = dwarf2_attr (die, DW_AT_noreturn, cu); | |
17392 | if (attr && (DW_UNSND (attr) != 0)) | |
17393 | TYPE_NO_RETURN (ftype) = 1; | |
17394 | ||
76c10ea2 GM |
17395 | /* We need to add the subroutine type to the die immediately so |
17396 | we don't infinitely recurse when dealing with parameters | |
0963b4bd | 17397 | declared as the same subroutine type. */ |
76c10ea2 | 17398 | set_die_type (die, ftype, cu); |
6e70227d | 17399 | |
639d11d3 | 17400 | if (die->child != NULL) |
c906108c | 17401 | { |
bb5ed363 | 17402 | struct type *void_type = objfile_type (objfile)->builtin_void; |
c906108c | 17403 | struct die_info *child_die; |
8072405b | 17404 | int nparams, iparams; |
c906108c SS |
17405 | |
17406 | /* Count the number of parameters. | |
17407 | FIXME: GDB currently ignores vararg functions, but knows about | |
17408 | vararg member functions. */ | |
8072405b | 17409 | nparams = 0; |
639d11d3 | 17410 | child_die = die->child; |
c906108c SS |
17411 | while (child_die && child_die->tag) |
17412 | { | |
17413 | if (child_die->tag == DW_TAG_formal_parameter) | |
17414 | nparams++; | |
17415 | else if (child_die->tag == DW_TAG_unspecified_parameters) | |
876cecd0 | 17416 | TYPE_VARARGS (ftype) = 1; |
c906108c SS |
17417 | child_die = sibling_die (child_die); |
17418 | } | |
17419 | ||
17420 | /* Allocate storage for parameters and fill them in. */ | |
17421 | TYPE_NFIELDS (ftype) = nparams; | |
17422 | TYPE_FIELDS (ftype) = (struct field *) | |
ae5a43e0 | 17423 | TYPE_ZALLOC (ftype, nparams * sizeof (struct field)); |
c906108c | 17424 | |
8072405b JK |
17425 | /* TYPE_FIELD_TYPE must never be NULL. Pre-fill the array to ensure it |
17426 | even if we error out during the parameters reading below. */ | |
17427 | for (iparams = 0; iparams < nparams; iparams++) | |
17428 | TYPE_FIELD_TYPE (ftype, iparams) = void_type; | |
17429 | ||
17430 | iparams = 0; | |
639d11d3 | 17431 | child_die = die->child; |
c906108c SS |
17432 | while (child_die && child_die->tag) |
17433 | { | |
17434 | if (child_die->tag == DW_TAG_formal_parameter) | |
17435 | { | |
3ce3b1ba PA |
17436 | struct type *arg_type; |
17437 | ||
17438 | /* DWARF version 2 has no clean way to discern C++ | |
17439 | static and non-static member functions. G++ helps | |
17440 | GDB by marking the first parameter for non-static | |
17441 | member functions (which is the this pointer) as | |
17442 | artificial. We pass this information to | |
17443 | dwarf2_add_member_fn via TYPE_FIELD_ARTIFICIAL. | |
17444 | ||
17445 | DWARF version 3 added DW_AT_object_pointer, which GCC | |
17446 | 4.5 does not yet generate. */ | |
e142c38c | 17447 | attr = dwarf2_attr (child_die, DW_AT_artificial, cu); |
c906108c SS |
17448 | if (attr) |
17449 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = DW_UNSND (attr); | |
17450 | else | |
9c37b5ae | 17451 | TYPE_FIELD_ARTIFICIAL (ftype, iparams) = 0; |
3ce3b1ba PA |
17452 | arg_type = die_type (child_die, cu); |
17453 | ||
17454 | /* RealView does not mark THIS as const, which the testsuite | |
17455 | expects. GCC marks THIS as const in method definitions, | |
17456 | but not in the class specifications (GCC PR 43053). */ | |
17457 | if (cu->language == language_cplus && !TYPE_CONST (arg_type) | |
17458 | && TYPE_FIELD_ARTIFICIAL (ftype, iparams)) | |
17459 | { | |
17460 | int is_this = 0; | |
17461 | struct dwarf2_cu *arg_cu = cu; | |
17462 | const char *name = dwarf2_name (child_die, cu); | |
17463 | ||
17464 | attr = dwarf2_attr (die, DW_AT_object_pointer, cu); | |
17465 | if (attr) | |
17466 | { | |
17467 | /* If the compiler emits this, use it. */ | |
17468 | if (follow_die_ref (die, attr, &arg_cu) == child_die) | |
17469 | is_this = 1; | |
17470 | } | |
17471 | else if (name && strcmp (name, "this") == 0) | |
17472 | /* Function definitions will have the argument names. */ | |
17473 | is_this = 1; | |
17474 | else if (name == NULL && iparams == 0) | |
17475 | /* Declarations may not have the names, so like | |
17476 | elsewhere in GDB, assume an artificial first | |
17477 | argument is "this". */ | |
17478 | is_this = 1; | |
17479 | ||
17480 | if (is_this) | |
17481 | arg_type = make_cv_type (1, TYPE_VOLATILE (arg_type), | |
17482 | arg_type, 0); | |
17483 | } | |
17484 | ||
17485 | TYPE_FIELD_TYPE (ftype, iparams) = arg_type; | |
c906108c SS |
17486 | iparams++; |
17487 | } | |
17488 | child_die = sibling_die (child_die); | |
17489 | } | |
17490 | } | |
17491 | ||
76c10ea2 | 17492 | return ftype; |
c906108c SS |
17493 | } |
17494 | ||
f792889a | 17495 | static struct type * |
e7c27a73 | 17496 | read_typedef (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17497 | { |
518817b3 | 17498 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
0114d602 | 17499 | const char *name = NULL; |
3c8e0968 | 17500 | struct type *this_type, *target_type; |
c906108c | 17501 | |
94af9270 | 17502 | name = dwarf2_full_name (NULL, die, cu); |
19f392bc UW |
17503 | this_type = init_type (objfile, TYPE_CODE_TYPEDEF, 0, name); |
17504 | TYPE_TARGET_STUB (this_type) = 1; | |
f792889a | 17505 | set_die_type (die, this_type, cu); |
3c8e0968 DE |
17506 | target_type = die_type (die, cu); |
17507 | if (target_type != this_type) | |
17508 | TYPE_TARGET_TYPE (this_type) = target_type; | |
17509 | else | |
17510 | { | |
17511 | /* Self-referential typedefs are, it seems, not allowed by the DWARF | |
17512 | spec and cause infinite loops in GDB. */ | |
b98664d3 | 17513 | complaint (_("Self-referential DW_TAG_typedef " |
9d8780f0 SM |
17514 | "- DIE at %s [in module %s]"), |
17515 | sect_offset_str (die->sect_off), objfile_name (objfile)); | |
3c8e0968 DE |
17516 | TYPE_TARGET_TYPE (this_type) = NULL; |
17517 | } | |
f792889a | 17518 | return this_type; |
c906108c SS |
17519 | } |
17520 | ||
9b790ce7 UW |
17521 | /* Allocate a floating-point type of size BITS and name NAME. Pass NAME_HINT |
17522 | (which may be different from NAME) to the architecture back-end to allow | |
17523 | it to guess the correct format if necessary. */ | |
17524 | ||
17525 | static struct type * | |
17526 | dwarf2_init_float_type (struct objfile *objfile, int bits, const char *name, | |
17527 | const char *name_hint) | |
17528 | { | |
17529 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
17530 | const struct floatformat **format; | |
17531 | struct type *type; | |
17532 | ||
17533 | format = gdbarch_floatformat_for_type (gdbarch, name_hint, bits); | |
17534 | if (format) | |
17535 | type = init_float_type (objfile, bits, name, format); | |
17536 | else | |
77b7c781 | 17537 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
9b790ce7 UW |
17538 | |
17539 | return type; | |
17540 | } | |
17541 | ||
eb77c9df AB |
17542 | /* Allocate an integer type of size BITS and name NAME. */ |
17543 | ||
17544 | static struct type * | |
17545 | dwarf2_init_integer_type (struct dwarf2_cu *cu, struct objfile *objfile, | |
17546 | int bits, int unsigned_p, const char *name) | |
17547 | { | |
17548 | struct type *type; | |
17549 | ||
17550 | /* Versions of Intel's C Compiler generate an integer type called "void" | |
17551 | instead of using DW_TAG_unspecified_type. This has been seen on | |
17552 | at least versions 14, 17, and 18. */ | |
35ee2dc2 AB |
17553 | if (bits == 0 && producer_is_icc (cu) && name != nullptr |
17554 | && strcmp (name, "void") == 0) | |
eb77c9df AB |
17555 | type = objfile_type (objfile)->builtin_void; |
17556 | else | |
17557 | type = init_integer_type (objfile, bits, unsigned_p, name); | |
17558 | ||
17559 | return type; | |
17560 | } | |
17561 | ||
8bdc1658 AB |
17562 | /* Initialise and return a floating point type of size BITS suitable for |
17563 | use as a component of a complex number. The NAME_HINT is passed through | |
17564 | when initialising the floating point type and is the name of the complex | |
17565 | type. | |
17566 | ||
17567 | As DWARF doesn't currently provide an explicit name for the components | |
17568 | of a complex number, but it can be helpful to have these components | |
17569 | named, we try to select a suitable name based on the size of the | |
17570 | component. */ | |
17571 | static struct type * | |
17572 | dwarf2_init_complex_target_type (struct dwarf2_cu *cu, | |
17573 | struct objfile *objfile, | |
17574 | int bits, const char *name_hint) | |
17575 | { | |
17576 | gdbarch *gdbarch = get_objfile_arch (objfile); | |
17577 | struct type *tt = nullptr; | |
17578 | ||
35add35e AB |
17579 | /* Try to find a suitable floating point builtin type of size BITS. |
17580 | We're going to use the name of this type as the name for the complex | |
17581 | target type that we are about to create. */ | |
1db455a7 | 17582 | switch (cu->language) |
8bdc1658 | 17583 | { |
1db455a7 AB |
17584 | case language_fortran: |
17585 | switch (bits) | |
17586 | { | |
17587 | case 32: | |
17588 | tt = builtin_f_type (gdbarch)->builtin_real; | |
17589 | break; | |
17590 | case 64: | |
17591 | tt = builtin_f_type (gdbarch)->builtin_real_s8; | |
17592 | break; | |
17593 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17594 | case 128: | |
17595 | tt = builtin_f_type (gdbarch)->builtin_real_s16; | |
17596 | break; | |
17597 | } | |
8bdc1658 | 17598 | break; |
1db455a7 AB |
17599 | default: |
17600 | switch (bits) | |
17601 | { | |
17602 | case 32: | |
17603 | tt = builtin_type (gdbarch)->builtin_float; | |
17604 | break; | |
17605 | case 64: | |
17606 | tt = builtin_type (gdbarch)->builtin_double; | |
17607 | break; | |
17608 | case 96: /* The x86-32 ABI specifies 96-bit long double. */ | |
17609 | case 128: | |
17610 | tt = builtin_type (gdbarch)->builtin_long_double; | |
17611 | break; | |
17612 | } | |
8bdc1658 AB |
17613 | break; |
17614 | } | |
17615 | ||
35add35e AB |
17616 | /* If the type we found doesn't match the size we were looking for, then |
17617 | pretend we didn't find a type at all, the complex target type we | |
17618 | create will then be nameless. */ | |
a12e5744 | 17619 | if (tt != nullptr && TYPE_LENGTH (tt) * TARGET_CHAR_BIT != bits) |
35add35e AB |
17620 | tt = nullptr; |
17621 | ||
8bdc1658 AB |
17622 | const char *name = (tt == nullptr) ? nullptr : TYPE_NAME (tt); |
17623 | return dwarf2_init_float_type (objfile, bits, name, name_hint); | |
17624 | } | |
17625 | ||
c906108c SS |
17626 | /* Find a representation of a given base type and install |
17627 | it in the TYPE field of the die. */ | |
17628 | ||
f792889a | 17629 | static struct type * |
e7c27a73 | 17630 | read_base_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 17631 | { |
518817b3 | 17632 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c SS |
17633 | struct type *type; |
17634 | struct attribute *attr; | |
19f392bc | 17635 | int encoding = 0, bits = 0; |
15d034d0 | 17636 | const char *name; |
c906108c | 17637 | |
e142c38c | 17638 | attr = dwarf2_attr (die, DW_AT_encoding, cu); |
c906108c SS |
17639 | if (attr) |
17640 | { | |
17641 | encoding = DW_UNSND (attr); | |
17642 | } | |
e142c38c | 17643 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
c906108c SS |
17644 | if (attr) |
17645 | { | |
19f392bc | 17646 | bits = DW_UNSND (attr) * TARGET_CHAR_BIT; |
c906108c | 17647 | } |
39cbfefa | 17648 | name = dwarf2_name (die, cu); |
6ccb9162 | 17649 | if (!name) |
c906108c | 17650 | { |
b98664d3 | 17651 | complaint (_("DW_AT_name missing from DW_TAG_base_type")); |
c906108c | 17652 | } |
6ccb9162 UW |
17653 | |
17654 | switch (encoding) | |
c906108c | 17655 | { |
6ccb9162 UW |
17656 | case DW_ATE_address: |
17657 | /* Turn DW_ATE_address into a void * pointer. */ | |
77b7c781 | 17658 | type = init_type (objfile, TYPE_CODE_VOID, TARGET_CHAR_BIT, NULL); |
19f392bc | 17659 | type = init_pointer_type (objfile, bits, name, type); |
6ccb9162 UW |
17660 | break; |
17661 | case DW_ATE_boolean: | |
19f392bc | 17662 | type = init_boolean_type (objfile, bits, 1, name); |
6ccb9162 UW |
17663 | break; |
17664 | case DW_ATE_complex_float: | |
8bdc1658 | 17665 | type = dwarf2_init_complex_target_type (cu, objfile, bits / 2, name); |
19f392bc | 17666 | type = init_complex_type (objfile, name, type); |
6ccb9162 UW |
17667 | break; |
17668 | case DW_ATE_decimal_float: | |
19f392bc | 17669 | type = init_decfloat_type (objfile, bits, name); |
6ccb9162 UW |
17670 | break; |
17671 | case DW_ATE_float: | |
9b790ce7 | 17672 | type = dwarf2_init_float_type (objfile, bits, name, name); |
6ccb9162 UW |
17673 | break; |
17674 | case DW_ATE_signed: | |
eb77c9df | 17675 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17676 | break; |
17677 | case DW_ATE_unsigned: | |
3b2b8fea TT |
17678 | if (cu->language == language_fortran |
17679 | && name | |
61012eef | 17680 | && startswith (name, "character(")) |
19f392bc UW |
17681 | type = init_character_type (objfile, bits, 1, name); |
17682 | else | |
eb77c9df | 17683 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 UW |
17684 | break; |
17685 | case DW_ATE_signed_char: | |
6e70227d | 17686 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea TT |
17687 | || cu->language == language_pascal |
17688 | || cu->language == language_fortran) | |
19f392bc UW |
17689 | type = init_character_type (objfile, bits, 0, name); |
17690 | else | |
eb77c9df | 17691 | type = dwarf2_init_integer_type (cu, objfile, bits, 0, name); |
6ccb9162 UW |
17692 | break; |
17693 | case DW_ATE_unsigned_char: | |
868a0084 | 17694 | if (cu->language == language_ada || cu->language == language_m2 |
3b2b8fea | 17695 | || cu->language == language_pascal |
c44af4eb TT |
17696 | || cu->language == language_fortran |
17697 | || cu->language == language_rust) | |
19f392bc UW |
17698 | type = init_character_type (objfile, bits, 1, name); |
17699 | else | |
eb77c9df | 17700 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
6ccb9162 | 17701 | break; |
75079b2b | 17702 | case DW_ATE_UTF: |
53e710ac PA |
17703 | { |
17704 | gdbarch *arch = get_objfile_arch (objfile); | |
17705 | ||
17706 | if (bits == 16) | |
17707 | type = builtin_type (arch)->builtin_char16; | |
17708 | else if (bits == 32) | |
17709 | type = builtin_type (arch)->builtin_char32; | |
17710 | else | |
17711 | { | |
b98664d3 | 17712 | complaint (_("unsupported DW_ATE_UTF bit size: '%d'"), |
53e710ac | 17713 | bits); |
eb77c9df | 17714 | type = dwarf2_init_integer_type (cu, objfile, bits, 1, name); |
53e710ac PA |
17715 | } |
17716 | return set_die_type (die, type, cu); | |
17717 | } | |
75079b2b TT |
17718 | break; |
17719 | ||
6ccb9162 | 17720 | default: |
b98664d3 | 17721 | complaint (_("unsupported DW_AT_encoding: '%s'"), |
6ccb9162 | 17722 | dwarf_type_encoding_name (encoding)); |
77b7c781 | 17723 | type = init_type (objfile, TYPE_CODE_ERROR, bits, name); |
6ccb9162 | 17724 | break; |
c906108c | 17725 | } |
6ccb9162 | 17726 | |
0114d602 | 17727 | if (name && strcmp (name, "char") == 0) |
876cecd0 | 17728 | TYPE_NOSIGN (type) = 1; |
0114d602 | 17729 | |
2b4424c3 TT |
17730 | maybe_set_alignment (cu, die, type); |
17731 | ||
f792889a | 17732 | return set_die_type (die, type, cu); |
c906108c SS |
17733 | } |
17734 | ||
80180f79 SA |
17735 | /* Parse dwarf attribute if it's a block, reference or constant and put the |
17736 | resulting value of the attribute into struct bound_prop. | |
17737 | Returns 1 if ATTR could be resolved into PROP, 0 otherwise. */ | |
17738 | ||
17739 | static int | |
17740 | attr_to_dynamic_prop (const struct attribute *attr, struct die_info *die, | |
17741 | struct dwarf2_cu *cu, struct dynamic_prop *prop) | |
17742 | { | |
17743 | struct dwarf2_property_baton *baton; | |
518817b3 SM |
17744 | struct obstack *obstack |
17745 | = &cu->per_cu->dwarf2_per_objfile->objfile->objfile_obstack; | |
80180f79 SA |
17746 | |
17747 | if (attr == NULL || prop == NULL) | |
17748 | return 0; | |
17749 | ||
17750 | if (attr_form_is_block (attr)) | |
17751 | { | |
8d749320 | 17752 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
80180f79 SA |
17753 | baton->referenced_type = NULL; |
17754 | baton->locexpr.per_cu = cu->per_cu; | |
17755 | baton->locexpr.size = DW_BLOCK (attr)->size; | |
17756 | baton->locexpr.data = DW_BLOCK (attr)->data; | |
17757 | prop->data.baton = baton; | |
17758 | prop->kind = PROP_LOCEXPR; | |
17759 | gdb_assert (prop->data.baton != NULL); | |
17760 | } | |
17761 | else if (attr_form_is_ref (attr)) | |
17762 | { | |
17763 | struct dwarf2_cu *target_cu = cu; | |
17764 | struct die_info *target_die; | |
17765 | struct attribute *target_attr; | |
17766 | ||
17767 | target_die = follow_die_ref (die, attr, &target_cu); | |
17768 | target_attr = dwarf2_attr (target_die, DW_AT_location, target_cu); | |
df25ebbd JB |
17769 | if (target_attr == NULL) |
17770 | target_attr = dwarf2_attr (target_die, DW_AT_data_member_location, | |
17771 | target_cu); | |
80180f79 SA |
17772 | if (target_attr == NULL) |
17773 | return 0; | |
17774 | ||
df25ebbd | 17775 | switch (target_attr->name) |
80180f79 | 17776 | { |
df25ebbd JB |
17777 | case DW_AT_location: |
17778 | if (attr_form_is_section_offset (target_attr)) | |
17779 | { | |
8d749320 | 17780 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17781 | baton->referenced_type = die_type (target_die, target_cu); |
17782 | fill_in_loclist_baton (cu, &baton->loclist, target_attr); | |
17783 | prop->data.baton = baton; | |
17784 | prop->kind = PROP_LOCLIST; | |
17785 | gdb_assert (prop->data.baton != NULL); | |
17786 | } | |
17787 | else if (attr_form_is_block (target_attr)) | |
17788 | { | |
8d749320 | 17789 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
df25ebbd JB |
17790 | baton->referenced_type = die_type (target_die, target_cu); |
17791 | baton->locexpr.per_cu = cu->per_cu; | |
17792 | baton->locexpr.size = DW_BLOCK (target_attr)->size; | |
17793 | baton->locexpr.data = DW_BLOCK (target_attr)->data; | |
17794 | prop->data.baton = baton; | |
17795 | prop->kind = PROP_LOCEXPR; | |
17796 | gdb_assert (prop->data.baton != NULL); | |
17797 | } | |
17798 | else | |
17799 | { | |
17800 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", | |
17801 | "dynamic property"); | |
17802 | return 0; | |
17803 | } | |
17804 | break; | |
17805 | case DW_AT_data_member_location: | |
17806 | { | |
17807 | LONGEST offset; | |
17808 | ||
17809 | if (!handle_data_member_location (target_die, target_cu, | |
17810 | &offset)) | |
17811 | return 0; | |
17812 | ||
8d749320 | 17813 | baton = XOBNEW (obstack, struct dwarf2_property_baton); |
6ad395a7 JB |
17814 | baton->referenced_type = read_type_die (target_die->parent, |
17815 | target_cu); | |
df25ebbd JB |
17816 | baton->offset_info.offset = offset; |
17817 | baton->offset_info.type = die_type (target_die, target_cu); | |
17818 | prop->data.baton = baton; | |
17819 | prop->kind = PROP_ADDR_OFFSET; | |
17820 | break; | |
17821 | } | |
80180f79 SA |
17822 | } |
17823 | } | |
17824 | else if (attr_form_is_constant (attr)) | |
17825 | { | |
17826 | prop->data.const_val = dwarf2_get_attr_constant_value (attr, 0); | |
17827 | prop->kind = PROP_CONST; | |
17828 | } | |
17829 | else | |
17830 | { | |
17831 | dwarf2_invalid_attrib_class_complaint (dwarf_form_name (attr->form), | |
17832 | dwarf2_name (die, cu)); | |
17833 | return 0; | |
17834 | } | |
17835 | ||
17836 | return 1; | |
17837 | } | |
17838 | ||
a02abb62 JB |
17839 | /* Read the given DW_AT_subrange DIE. */ |
17840 | ||
f792889a | 17841 | static struct type * |
a02abb62 JB |
17842 | read_subrange_type (struct die_info *die, struct dwarf2_cu *cu) |
17843 | { | |
4c9ad8c2 | 17844 | struct type *base_type, *orig_base_type; |
a02abb62 JB |
17845 | struct type *range_type; |
17846 | struct attribute *attr; | |
729efb13 | 17847 | struct dynamic_prop low, high; |
4fae6e18 | 17848 | int low_default_is_valid; |
c451ebe5 | 17849 | int high_bound_is_count = 0; |
15d034d0 | 17850 | const char *name; |
d359392f | 17851 | ULONGEST negative_mask; |
e77813c8 | 17852 | |
4c9ad8c2 TT |
17853 | orig_base_type = die_type (die, cu); |
17854 | /* If ORIG_BASE_TYPE is a typedef, it will not be TYPE_UNSIGNED, | |
17855 | whereas the real type might be. So, we use ORIG_BASE_TYPE when | |
17856 | creating the range type, but we use the result of check_typedef | |
17857 | when examining properties of the type. */ | |
17858 | base_type = check_typedef (orig_base_type); | |
a02abb62 | 17859 | |
7e314c57 JK |
17860 | /* The die_type call above may have already set the type for this DIE. */ |
17861 | range_type = get_die_type (die, cu); | |
17862 | if (range_type) | |
17863 | return range_type; | |
17864 | ||
729efb13 SA |
17865 | low.kind = PROP_CONST; |
17866 | high.kind = PROP_CONST; | |
17867 | high.data.const_val = 0; | |
17868 | ||
4fae6e18 JK |
17869 | /* Set LOW_DEFAULT_IS_VALID if current language and DWARF version allow |
17870 | omitting DW_AT_lower_bound. */ | |
17871 | switch (cu->language) | |
6e70227d | 17872 | { |
4fae6e18 JK |
17873 | case language_c: |
17874 | case language_cplus: | |
729efb13 | 17875 | low.data.const_val = 0; |
4fae6e18 JK |
17876 | low_default_is_valid = 1; |
17877 | break; | |
17878 | case language_fortran: | |
729efb13 | 17879 | low.data.const_val = 1; |
4fae6e18 JK |
17880 | low_default_is_valid = 1; |
17881 | break; | |
17882 | case language_d: | |
4fae6e18 | 17883 | case language_objc: |
c44af4eb | 17884 | case language_rust: |
729efb13 | 17885 | low.data.const_val = 0; |
4fae6e18 JK |
17886 | low_default_is_valid = (cu->header.version >= 4); |
17887 | break; | |
17888 | case language_ada: | |
17889 | case language_m2: | |
17890 | case language_pascal: | |
729efb13 | 17891 | low.data.const_val = 1; |
4fae6e18 JK |
17892 | low_default_is_valid = (cu->header.version >= 4); |
17893 | break; | |
17894 | default: | |
729efb13 | 17895 | low.data.const_val = 0; |
4fae6e18 JK |
17896 | low_default_is_valid = 0; |
17897 | break; | |
a02abb62 JB |
17898 | } |
17899 | ||
e142c38c | 17900 | attr = dwarf2_attr (die, DW_AT_lower_bound, cu); |
a02abb62 | 17901 | if (attr) |
11c1ba78 | 17902 | attr_to_dynamic_prop (attr, die, cu, &low); |
4fae6e18 | 17903 | else if (!low_default_is_valid) |
b98664d3 | 17904 | complaint (_("Missing DW_AT_lower_bound " |
9d8780f0 SM |
17905 | "- DIE at %s [in module %s]"), |
17906 | sect_offset_str (die->sect_off), | |
518817b3 | 17907 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
a02abb62 | 17908 | |
506f5c41 TV |
17909 | struct attribute *attr_ub, *attr_count; |
17910 | attr = attr_ub = dwarf2_attr (die, DW_AT_upper_bound, cu); | |
80180f79 | 17911 | if (!attr_to_dynamic_prop (attr, die, cu, &high)) |
e77813c8 | 17912 | { |
506f5c41 | 17913 | attr = attr_count = dwarf2_attr (die, DW_AT_count, cu); |
c451ebe5 | 17914 | if (attr_to_dynamic_prop (attr, die, cu, &high)) |
6b662e19 | 17915 | { |
c451ebe5 SA |
17916 | /* If bounds are constant do the final calculation here. */ |
17917 | if (low.kind == PROP_CONST && high.kind == PROP_CONST) | |
17918 | high.data.const_val = low.data.const_val + high.data.const_val - 1; | |
17919 | else | |
17920 | high_bound_is_count = 1; | |
c2ff108b | 17921 | } |
506f5c41 TV |
17922 | else |
17923 | { | |
17924 | if (attr_ub != NULL) | |
17925 | complaint (_("Unresolved DW_AT_upper_bound " | |
17926 | "- DIE at %s [in module %s]"), | |
17927 | sect_offset_str (die->sect_off), | |
17928 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17929 | if (attr_count != NULL) | |
17930 | complaint (_("Unresolved DW_AT_count " | |
17931 | "- DIE at %s [in module %s]"), | |
17932 | sect_offset_str (die->sect_off), | |
17933 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); | |
17934 | } | |
17935 | ||
e77813c8 PM |
17936 | } |
17937 | ||
17938 | /* Dwarf-2 specifications explicitly allows to create subrange types | |
17939 | without specifying a base type. | |
17940 | In that case, the base type must be set to the type of | |
17941 | the lower bound, upper bound or count, in that order, if any of these | |
17942 | three attributes references an object that has a type. | |
17943 | If no base type is found, the Dwarf-2 specifications say that | |
17944 | a signed integer type of size equal to the size of an address should | |
17945 | be used. | |
17946 | For the following C code: `extern char gdb_int [];' | |
17947 | GCC produces an empty range DIE. | |
17948 | FIXME: muller/2010-05-28: Possible references to object for low bound, | |
0963b4bd | 17949 | high bound or count are not yet handled by this code. */ |
e77813c8 PM |
17950 | if (TYPE_CODE (base_type) == TYPE_CODE_VOID) |
17951 | { | |
518817b3 | 17952 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e77813c8 PM |
17953 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
17954 | int addr_size = gdbarch_addr_bit (gdbarch) /8; | |
17955 | struct type *int_type = objfile_type (objfile)->builtin_int; | |
17956 | ||
17957 | /* Test "int", "long int", and "long long int" objfile types, | |
17958 | and select the first one having a size above or equal to the | |
17959 | architecture address size. */ | |
17960 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17961 | base_type = int_type; | |
17962 | else | |
17963 | { | |
17964 | int_type = objfile_type (objfile)->builtin_long; | |
17965 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17966 | base_type = int_type; | |
17967 | else | |
17968 | { | |
17969 | int_type = objfile_type (objfile)->builtin_long_long; | |
17970 | if (int_type && TYPE_LENGTH (int_type) >= addr_size) | |
17971 | base_type = int_type; | |
17972 | } | |
17973 | } | |
17974 | } | |
a02abb62 | 17975 | |
dbb9c2b1 JB |
17976 | /* Normally, the DWARF producers are expected to use a signed |
17977 | constant form (Eg. DW_FORM_sdata) to express negative bounds. | |
17978 | But this is unfortunately not always the case, as witnessed | |
17979 | with GCC, for instance, where the ambiguous DW_FORM_dataN form | |
17980 | is used instead. To work around that ambiguity, we treat | |
17981 | the bounds as signed, and thus sign-extend their values, when | |
17982 | the base type is signed. */ | |
6e70227d | 17983 | negative_mask = |
d359392f | 17984 | -((ULONGEST) 1 << (TYPE_LENGTH (base_type) * TARGET_CHAR_BIT - 1)); |
729efb13 SA |
17985 | if (low.kind == PROP_CONST |
17986 | && !TYPE_UNSIGNED (base_type) && (low.data.const_val & negative_mask)) | |
17987 | low.data.const_val |= negative_mask; | |
17988 | if (high.kind == PROP_CONST | |
17989 | && !TYPE_UNSIGNED (base_type) && (high.data.const_val & negative_mask)) | |
17990 | high.data.const_val |= negative_mask; | |
43bbcdc2 | 17991 | |
729efb13 | 17992 | range_type = create_range_type (NULL, orig_base_type, &low, &high); |
a02abb62 | 17993 | |
c451ebe5 SA |
17994 | if (high_bound_is_count) |
17995 | TYPE_RANGE_DATA (range_type)->flag_upper_bound_is_count = 1; | |
17996 | ||
c2ff108b JK |
17997 | /* Ada expects an empty array on no boundary attributes. */ |
17998 | if (attr == NULL && cu->language != language_ada) | |
729efb13 | 17999 | TYPE_HIGH_BOUND_KIND (range_type) = PROP_UNDEFINED; |
c2ff108b | 18000 | |
39cbfefa DJ |
18001 | name = dwarf2_name (die, cu); |
18002 | if (name) | |
18003 | TYPE_NAME (range_type) = name; | |
6e70227d | 18004 | |
e142c38c | 18005 | attr = dwarf2_attr (die, DW_AT_byte_size, cu); |
a02abb62 JB |
18006 | if (attr) |
18007 | TYPE_LENGTH (range_type) = DW_UNSND (attr); | |
18008 | ||
2b4424c3 TT |
18009 | maybe_set_alignment (cu, die, range_type); |
18010 | ||
7e314c57 JK |
18011 | set_die_type (die, range_type, cu); |
18012 | ||
18013 | /* set_die_type should be already done. */ | |
b4ba55a1 JB |
18014 | set_descriptive_type (range_type, die, cu); |
18015 | ||
7e314c57 | 18016 | return range_type; |
a02abb62 | 18017 | } |
6e70227d | 18018 | |
f792889a | 18019 | static struct type * |
81a17f79 JB |
18020 | read_unspecified_type (struct die_info *die, struct dwarf2_cu *cu) |
18021 | { | |
18022 | struct type *type; | |
81a17f79 | 18023 | |
518817b3 SM |
18024 | type = init_type (cu->per_cu->dwarf2_per_objfile->objfile, TYPE_CODE_VOID,0, |
18025 | NULL); | |
0114d602 | 18026 | TYPE_NAME (type) = dwarf2_name (die, cu); |
81a17f79 | 18027 | |
74a2f8ff JB |
18028 | /* In Ada, an unspecified type is typically used when the description |
18029 | of the type is defered to a different unit. When encountering | |
18030 | such a type, we treat it as a stub, and try to resolve it later on, | |
18031 | when needed. */ | |
18032 | if (cu->language == language_ada) | |
18033 | TYPE_STUB (type) = 1; | |
18034 | ||
f792889a | 18035 | return set_die_type (die, type, cu); |
81a17f79 | 18036 | } |
a02abb62 | 18037 | |
639d11d3 DC |
18038 | /* Read a single die and all its descendents. Set the die's sibling |
18039 | field to NULL; set other fields in the die correctly, and set all | |
18040 | of the descendents' fields correctly. Set *NEW_INFO_PTR to the | |
18041 | location of the info_ptr after reading all of those dies. PARENT | |
18042 | is the parent of the die in question. */ | |
18043 | ||
18044 | static struct die_info * | |
dee91e82 | 18045 | read_die_and_children (const struct die_reader_specs *reader, |
d521ce57 TT |
18046 | const gdb_byte *info_ptr, |
18047 | const gdb_byte **new_info_ptr, | |
dee91e82 | 18048 | struct die_info *parent) |
639d11d3 DC |
18049 | { |
18050 | struct die_info *die; | |
d521ce57 | 18051 | const gdb_byte *cur_ptr; |
639d11d3 DC |
18052 | int has_children; |
18053 | ||
bf6af496 | 18054 | cur_ptr = read_full_die_1 (reader, &die, info_ptr, &has_children, 0); |
1d325ec1 DJ |
18055 | if (die == NULL) |
18056 | { | |
18057 | *new_info_ptr = cur_ptr; | |
18058 | return NULL; | |
18059 | } | |
93311388 | 18060 | store_in_ref_table (die, reader->cu); |
639d11d3 DC |
18061 | |
18062 | if (has_children) | |
bf6af496 | 18063 | die->child = read_die_and_siblings_1 (reader, cur_ptr, new_info_ptr, die); |
639d11d3 DC |
18064 | else |
18065 | { | |
18066 | die->child = NULL; | |
18067 | *new_info_ptr = cur_ptr; | |
18068 | } | |
18069 | ||
18070 | die->sibling = NULL; | |
18071 | die->parent = parent; | |
18072 | return die; | |
18073 | } | |
18074 | ||
18075 | /* Read a die, all of its descendents, and all of its siblings; set | |
18076 | all of the fields of all of the dies correctly. Arguments are as | |
18077 | in read_die_and_children. */ | |
18078 | ||
18079 | static struct die_info * | |
bf6af496 | 18080 | read_die_and_siblings_1 (const struct die_reader_specs *reader, |
d521ce57 TT |
18081 | const gdb_byte *info_ptr, |
18082 | const gdb_byte **new_info_ptr, | |
bf6af496 | 18083 | struct die_info *parent) |
639d11d3 DC |
18084 | { |
18085 | struct die_info *first_die, *last_sibling; | |
d521ce57 | 18086 | const gdb_byte *cur_ptr; |
639d11d3 | 18087 | |
c906108c | 18088 | cur_ptr = info_ptr; |
639d11d3 DC |
18089 | first_die = last_sibling = NULL; |
18090 | ||
18091 | while (1) | |
c906108c | 18092 | { |
639d11d3 | 18093 | struct die_info *die |
dee91e82 | 18094 | = read_die_and_children (reader, cur_ptr, &cur_ptr, parent); |
639d11d3 | 18095 | |
1d325ec1 | 18096 | if (die == NULL) |
c906108c | 18097 | { |
639d11d3 DC |
18098 | *new_info_ptr = cur_ptr; |
18099 | return first_die; | |
c906108c | 18100 | } |
1d325ec1 DJ |
18101 | |
18102 | if (!first_die) | |
18103 | first_die = die; | |
c906108c | 18104 | else |
1d325ec1 DJ |
18105 | last_sibling->sibling = die; |
18106 | ||
18107 | last_sibling = die; | |
c906108c | 18108 | } |
c906108c SS |
18109 | } |
18110 | ||
bf6af496 DE |
18111 | /* Read a die, all of its descendents, and all of its siblings; set |
18112 | all of the fields of all of the dies correctly. Arguments are as | |
18113 | in read_die_and_children. | |
18114 | This the main entry point for reading a DIE and all its children. */ | |
18115 | ||
18116 | static struct die_info * | |
18117 | read_die_and_siblings (const struct die_reader_specs *reader, | |
d521ce57 TT |
18118 | const gdb_byte *info_ptr, |
18119 | const gdb_byte **new_info_ptr, | |
bf6af496 DE |
18120 | struct die_info *parent) |
18121 | { | |
18122 | struct die_info *die = read_die_and_siblings_1 (reader, info_ptr, | |
18123 | new_info_ptr, parent); | |
18124 | ||
b4f54984 | 18125 | if (dwarf_die_debug) |
bf6af496 DE |
18126 | { |
18127 | fprintf_unfiltered (gdb_stdlog, | |
18128 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18129 | get_section_name (reader->die_section), |
bf6af496 DE |
18130 | (unsigned) (info_ptr - reader->die_section->buffer), |
18131 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18132 | dump_die (die, dwarf_die_debug); |
bf6af496 DE |
18133 | } |
18134 | ||
18135 | return die; | |
18136 | } | |
18137 | ||
3019eac3 DE |
18138 | /* Read a die and all its attributes, leave space for NUM_EXTRA_ATTRS |
18139 | attributes. | |
18140 | The caller is responsible for filling in the extra attributes | |
18141 | and updating (*DIEP)->num_attrs. | |
18142 | Set DIEP to point to a newly allocated die with its information, | |
18143 | except for its child, sibling, and parent fields. | |
18144 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
93311388 | 18145 | |
d521ce57 | 18146 | static const gdb_byte * |
3019eac3 | 18147 | read_full_die_1 (const struct die_reader_specs *reader, |
d521ce57 | 18148 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 | 18149 | int *has_children, int num_extra_attrs) |
93311388 | 18150 | { |
b64f50a1 | 18151 | unsigned int abbrev_number, bytes_read, i; |
93311388 DE |
18152 | struct abbrev_info *abbrev; |
18153 | struct die_info *die; | |
18154 | struct dwarf2_cu *cu = reader->cu; | |
18155 | bfd *abfd = reader->abfd; | |
18156 | ||
9c541725 | 18157 | sect_offset sect_off = (sect_offset) (info_ptr - reader->buffer); |
93311388 DE |
18158 | abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
18159 | info_ptr += bytes_read; | |
18160 | if (!abbrev_number) | |
18161 | { | |
18162 | *diep = NULL; | |
18163 | *has_children = 0; | |
18164 | return info_ptr; | |
18165 | } | |
18166 | ||
685af9cd | 18167 | abbrev = reader->abbrev_table->lookup_abbrev (abbrev_number); |
93311388 | 18168 | if (!abbrev) |
348e048f DE |
18169 | error (_("Dwarf Error: could not find abbrev number %d [in module %s]"), |
18170 | abbrev_number, | |
18171 | bfd_get_filename (abfd)); | |
18172 | ||
3019eac3 | 18173 | die = dwarf_alloc_die (cu, abbrev->num_attrs + num_extra_attrs); |
9c541725 | 18174 | die->sect_off = sect_off; |
93311388 DE |
18175 | die->tag = abbrev->tag; |
18176 | die->abbrev = abbrev_number; | |
18177 | ||
3019eac3 DE |
18178 | /* Make the result usable. |
18179 | The caller needs to update num_attrs after adding the extra | |
18180 | attributes. */ | |
93311388 DE |
18181 | die->num_attrs = abbrev->num_attrs; |
18182 | ||
18183 | for (i = 0; i < abbrev->num_attrs; ++i) | |
dee91e82 DE |
18184 | info_ptr = read_attribute (reader, &die->attrs[i], &abbrev->attrs[i], |
18185 | info_ptr); | |
93311388 DE |
18186 | |
18187 | *diep = die; | |
18188 | *has_children = abbrev->has_children; | |
18189 | return info_ptr; | |
18190 | } | |
18191 | ||
3019eac3 DE |
18192 | /* Read a die and all its attributes. |
18193 | Set DIEP to point to a newly allocated die with its information, | |
18194 | except for its child, sibling, and parent fields. | |
18195 | Set HAS_CHILDREN to tell whether the die has children or not. */ | |
18196 | ||
d521ce57 | 18197 | static const gdb_byte * |
3019eac3 | 18198 | read_full_die (const struct die_reader_specs *reader, |
d521ce57 | 18199 | struct die_info **diep, const gdb_byte *info_ptr, |
3019eac3 DE |
18200 | int *has_children) |
18201 | { | |
d521ce57 | 18202 | const gdb_byte *result; |
bf6af496 DE |
18203 | |
18204 | result = read_full_die_1 (reader, diep, info_ptr, has_children, 0); | |
18205 | ||
b4f54984 | 18206 | if (dwarf_die_debug) |
bf6af496 DE |
18207 | { |
18208 | fprintf_unfiltered (gdb_stdlog, | |
18209 | "Read die from %s@0x%x of %s:\n", | |
a32a8923 | 18210 | get_section_name (reader->die_section), |
bf6af496 DE |
18211 | (unsigned) (info_ptr - reader->die_section->buffer), |
18212 | bfd_get_filename (reader->abfd)); | |
b4f54984 | 18213 | dump_die (*diep, dwarf_die_debug); |
bf6af496 DE |
18214 | } |
18215 | ||
18216 | return result; | |
3019eac3 | 18217 | } |
433df2d4 DE |
18218 | \f |
18219 | /* Abbreviation tables. | |
3019eac3 | 18220 | |
433df2d4 | 18221 | In DWARF version 2, the description of the debugging information is |
c906108c SS |
18222 | stored in a separate .debug_abbrev section. Before we read any |
18223 | dies from a section we read in all abbreviations and install them | |
433df2d4 DE |
18224 | in a hash table. */ |
18225 | ||
18226 | /* Allocate space for a struct abbrev_info object in ABBREV_TABLE. */ | |
18227 | ||
685af9cd TT |
18228 | struct abbrev_info * |
18229 | abbrev_table::alloc_abbrev () | |
433df2d4 DE |
18230 | { |
18231 | struct abbrev_info *abbrev; | |
18232 | ||
685af9cd | 18233 | abbrev = XOBNEW (&abbrev_obstack, struct abbrev_info); |
433df2d4 | 18234 | memset (abbrev, 0, sizeof (struct abbrev_info)); |
8d749320 | 18235 | |
433df2d4 DE |
18236 | return abbrev; |
18237 | } | |
18238 | ||
18239 | /* Add an abbreviation to the table. */ | |
c906108c | 18240 | |
685af9cd TT |
18241 | void |
18242 | abbrev_table::add_abbrev (unsigned int abbrev_number, | |
18243 | struct abbrev_info *abbrev) | |
433df2d4 DE |
18244 | { |
18245 | unsigned int hash_number; | |
18246 | ||
18247 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 YQ |
18248 | abbrev->next = m_abbrevs[hash_number]; |
18249 | m_abbrevs[hash_number] = abbrev; | |
433df2d4 | 18250 | } |
dee91e82 | 18251 | |
433df2d4 DE |
18252 | /* Look up an abbrev in the table. |
18253 | Returns NULL if the abbrev is not found. */ | |
18254 | ||
685af9cd TT |
18255 | struct abbrev_info * |
18256 | abbrev_table::lookup_abbrev (unsigned int abbrev_number) | |
c906108c | 18257 | { |
433df2d4 DE |
18258 | unsigned int hash_number; |
18259 | struct abbrev_info *abbrev; | |
18260 | ||
18261 | hash_number = abbrev_number % ABBREV_HASH_SIZE; | |
4a17f768 | 18262 | abbrev = m_abbrevs[hash_number]; |
433df2d4 DE |
18263 | |
18264 | while (abbrev) | |
18265 | { | |
18266 | if (abbrev->number == abbrev_number) | |
18267 | return abbrev; | |
18268 | abbrev = abbrev->next; | |
18269 | } | |
18270 | return NULL; | |
18271 | } | |
18272 | ||
18273 | /* Read in an abbrev table. */ | |
18274 | ||
685af9cd | 18275 | static abbrev_table_up |
ed2dc618 SM |
18276 | abbrev_table_read_table (struct dwarf2_per_objfile *dwarf2_per_objfile, |
18277 | struct dwarf2_section_info *section, | |
9c541725 | 18278 | sect_offset sect_off) |
433df2d4 DE |
18279 | { |
18280 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
a32a8923 | 18281 | bfd *abfd = get_section_bfd_owner (section); |
d521ce57 | 18282 | const gdb_byte *abbrev_ptr; |
c906108c SS |
18283 | struct abbrev_info *cur_abbrev; |
18284 | unsigned int abbrev_number, bytes_read, abbrev_name; | |
433df2d4 | 18285 | unsigned int abbrev_form; |
f3dd6933 DJ |
18286 | struct attr_abbrev *cur_attrs; |
18287 | unsigned int allocated_attrs; | |
c906108c | 18288 | |
685af9cd | 18289 | abbrev_table_up abbrev_table (new struct abbrev_table (sect_off)); |
c906108c | 18290 | |
433df2d4 | 18291 | dwarf2_read_section (objfile, section); |
9c541725 | 18292 | abbrev_ptr = section->buffer + to_underlying (sect_off); |
c906108c SS |
18293 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18294 | abbrev_ptr += bytes_read; | |
18295 | ||
f3dd6933 | 18296 | allocated_attrs = ATTR_ALLOC_CHUNK; |
8d749320 | 18297 | cur_attrs = XNEWVEC (struct attr_abbrev, allocated_attrs); |
6e70227d | 18298 | |
0963b4bd | 18299 | /* Loop until we reach an abbrev number of 0. */ |
c906108c SS |
18300 | while (abbrev_number) |
18301 | { | |
685af9cd | 18302 | cur_abbrev = abbrev_table->alloc_abbrev (); |
c906108c SS |
18303 | |
18304 | /* read in abbrev header */ | |
18305 | cur_abbrev->number = abbrev_number; | |
aead7601 SM |
18306 | cur_abbrev->tag |
18307 | = (enum dwarf_tag) read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
c906108c SS |
18308 | abbrev_ptr += bytes_read; |
18309 | cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr); | |
18310 | abbrev_ptr += 1; | |
18311 | ||
18312 | /* now read in declarations */ | |
22d2f3ab | 18313 | for (;;) |
c906108c | 18314 | { |
43988095 JK |
18315 | LONGEST implicit_const; |
18316 | ||
22d2f3ab JK |
18317 | abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); |
18318 | abbrev_ptr += bytes_read; | |
18319 | abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18320 | abbrev_ptr += bytes_read; | |
43988095 JK |
18321 | if (abbrev_form == DW_FORM_implicit_const) |
18322 | { | |
18323 | implicit_const = read_signed_leb128 (abfd, abbrev_ptr, | |
18324 | &bytes_read); | |
18325 | abbrev_ptr += bytes_read; | |
18326 | } | |
18327 | else | |
18328 | { | |
18329 | /* Initialize it due to a false compiler warning. */ | |
18330 | implicit_const = -1; | |
18331 | } | |
22d2f3ab JK |
18332 | |
18333 | if (abbrev_name == 0) | |
18334 | break; | |
18335 | ||
f3dd6933 | 18336 | if (cur_abbrev->num_attrs == allocated_attrs) |
c906108c | 18337 | { |
f3dd6933 DJ |
18338 | allocated_attrs += ATTR_ALLOC_CHUNK; |
18339 | cur_attrs | |
224c3ddb | 18340 | = XRESIZEVEC (struct attr_abbrev, cur_attrs, allocated_attrs); |
c906108c | 18341 | } |
ae038cb0 | 18342 | |
aead7601 SM |
18343 | cur_attrs[cur_abbrev->num_attrs].name |
18344 | = (enum dwarf_attribute) abbrev_name; | |
22d2f3ab | 18345 | cur_attrs[cur_abbrev->num_attrs].form |
aead7601 | 18346 | = (enum dwarf_form) abbrev_form; |
43988095 | 18347 | cur_attrs[cur_abbrev->num_attrs].implicit_const = implicit_const; |
22d2f3ab | 18348 | ++cur_abbrev->num_attrs; |
c906108c SS |
18349 | } |
18350 | ||
8d749320 SM |
18351 | cur_abbrev->attrs = |
18352 | XOBNEWVEC (&abbrev_table->abbrev_obstack, struct attr_abbrev, | |
18353 | cur_abbrev->num_attrs); | |
f3dd6933 DJ |
18354 | memcpy (cur_abbrev->attrs, cur_attrs, |
18355 | cur_abbrev->num_attrs * sizeof (struct attr_abbrev)); | |
18356 | ||
685af9cd | 18357 | abbrev_table->add_abbrev (abbrev_number, cur_abbrev); |
c906108c SS |
18358 | |
18359 | /* Get next abbreviation. | |
18360 | Under Irix6 the abbreviations for a compilation unit are not | |
c5aa993b JM |
18361 | always properly terminated with an abbrev number of 0. |
18362 | Exit loop if we encounter an abbreviation which we have | |
18363 | already read (which means we are about to read the abbreviations | |
18364 | for the next compile unit) or if the end of the abbreviation | |
18365 | table is reached. */ | |
433df2d4 | 18366 | if ((unsigned int) (abbrev_ptr - section->buffer) >= section->size) |
c906108c SS |
18367 | break; |
18368 | abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read); | |
18369 | abbrev_ptr += bytes_read; | |
685af9cd | 18370 | if (abbrev_table->lookup_abbrev (abbrev_number) != NULL) |
c906108c SS |
18371 | break; |
18372 | } | |
f3dd6933 DJ |
18373 | |
18374 | xfree (cur_attrs); | |
433df2d4 | 18375 | return abbrev_table; |
c906108c SS |
18376 | } |
18377 | ||
72bf9492 DJ |
18378 | /* Returns nonzero if TAG represents a type that we might generate a partial |
18379 | symbol for. */ | |
18380 | ||
18381 | static int | |
18382 | is_type_tag_for_partial (int tag) | |
18383 | { | |
18384 | switch (tag) | |
18385 | { | |
18386 | #if 0 | |
18387 | /* Some types that would be reasonable to generate partial symbols for, | |
18388 | that we don't at present. */ | |
18389 | case DW_TAG_array_type: | |
18390 | case DW_TAG_file_type: | |
18391 | case DW_TAG_ptr_to_member_type: | |
18392 | case DW_TAG_set_type: | |
18393 | case DW_TAG_string_type: | |
18394 | case DW_TAG_subroutine_type: | |
18395 | #endif | |
18396 | case DW_TAG_base_type: | |
18397 | case DW_TAG_class_type: | |
680b30c7 | 18398 | case DW_TAG_interface_type: |
72bf9492 DJ |
18399 | case DW_TAG_enumeration_type: |
18400 | case DW_TAG_structure_type: | |
18401 | case DW_TAG_subrange_type: | |
18402 | case DW_TAG_typedef: | |
18403 | case DW_TAG_union_type: | |
18404 | return 1; | |
18405 | default: | |
18406 | return 0; | |
18407 | } | |
18408 | } | |
18409 | ||
18410 | /* Load all DIEs that are interesting for partial symbols into memory. */ | |
18411 | ||
18412 | static struct partial_die_info * | |
dee91e82 | 18413 | load_partial_dies (const struct die_reader_specs *reader, |
d521ce57 | 18414 | const gdb_byte *info_ptr, int building_psymtab) |
72bf9492 | 18415 | { |
dee91e82 | 18416 | struct dwarf2_cu *cu = reader->cu; |
518817b3 | 18417 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
72bf9492 | 18418 | struct partial_die_info *parent_die, *last_die, *first_die = NULL; |
72bf9492 | 18419 | unsigned int bytes_read; |
5afb4e99 | 18420 | unsigned int load_all = 0; |
72bf9492 DJ |
18421 | int nesting_level = 1; |
18422 | ||
18423 | parent_die = NULL; | |
18424 | last_die = NULL; | |
18425 | ||
7adf1e79 DE |
18426 | gdb_assert (cu->per_cu != NULL); |
18427 | if (cu->per_cu->load_all_dies) | |
5afb4e99 DJ |
18428 | load_all = 1; |
18429 | ||
72bf9492 DJ |
18430 | cu->partial_dies |
18431 | = htab_create_alloc_ex (cu->header.length / 12, | |
18432 | partial_die_hash, | |
18433 | partial_die_eq, | |
18434 | NULL, | |
18435 | &cu->comp_unit_obstack, | |
18436 | hashtab_obstack_allocate, | |
18437 | dummy_obstack_deallocate); | |
18438 | ||
72bf9492 DJ |
18439 | while (1) |
18440 | { | |
685af9cd | 18441 | abbrev_info *abbrev = peek_die_abbrev (*reader, info_ptr, &bytes_read); |
72bf9492 DJ |
18442 | |
18443 | /* A NULL abbrev means the end of a series of children. */ | |
18444 | if (abbrev == NULL) | |
18445 | { | |
18446 | if (--nesting_level == 0) | |
cd9983dd YQ |
18447 | return first_die; |
18448 | ||
72bf9492 DJ |
18449 | info_ptr += bytes_read; |
18450 | last_die = parent_die; | |
18451 | parent_die = parent_die->die_parent; | |
18452 | continue; | |
18453 | } | |
18454 | ||
98bfdba5 PA |
18455 | /* Check for template arguments. We never save these; if |
18456 | they're seen, we just mark the parent, and go on our way. */ | |
18457 | if (parent_die != NULL | |
18458 | && cu->language == language_cplus | |
18459 | && (abbrev->tag == DW_TAG_template_type_param | |
18460 | || abbrev->tag == DW_TAG_template_value_param)) | |
18461 | { | |
18462 | parent_die->has_template_arguments = 1; | |
18463 | ||
18464 | if (!load_all) | |
18465 | { | |
18466 | /* We don't need a partial DIE for the template argument. */ | |
dee91e82 | 18467 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18468 | continue; |
18469 | } | |
18470 | } | |
18471 | ||
0d99eb77 | 18472 | /* We only recurse into c++ subprograms looking for template arguments. |
98bfdba5 PA |
18473 | Skip their other children. */ |
18474 | if (!load_all | |
18475 | && cu->language == language_cplus | |
18476 | && parent_die != NULL | |
18477 | && parent_die->tag == DW_TAG_subprogram) | |
18478 | { | |
dee91e82 | 18479 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
98bfdba5 PA |
18480 | continue; |
18481 | } | |
18482 | ||
5afb4e99 DJ |
18483 | /* Check whether this DIE is interesting enough to save. Normally |
18484 | we would not be interested in members here, but there may be | |
18485 | later variables referencing them via DW_AT_specification (for | |
18486 | static members). */ | |
18487 | if (!load_all | |
18488 | && !is_type_tag_for_partial (abbrev->tag) | |
72929c62 | 18489 | && abbrev->tag != DW_TAG_constant |
72bf9492 DJ |
18490 | && abbrev->tag != DW_TAG_enumerator |
18491 | && abbrev->tag != DW_TAG_subprogram | |
b1dc1806 | 18492 | && abbrev->tag != DW_TAG_inlined_subroutine |
bc30ff58 | 18493 | && abbrev->tag != DW_TAG_lexical_block |
72bf9492 | 18494 | && abbrev->tag != DW_TAG_variable |
5afb4e99 | 18495 | && abbrev->tag != DW_TAG_namespace |
f55ee35c | 18496 | && abbrev->tag != DW_TAG_module |
95554aad | 18497 | && abbrev->tag != DW_TAG_member |
74921315 KS |
18498 | && abbrev->tag != DW_TAG_imported_unit |
18499 | && abbrev->tag != DW_TAG_imported_declaration) | |
72bf9492 DJ |
18500 | { |
18501 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18502 | info_ptr = skip_one_die (reader, info_ptr + bytes_read, abbrev); |
72bf9492 DJ |
18503 | continue; |
18504 | } | |
18505 | ||
6f06d47b YQ |
18506 | struct partial_die_info pdi ((sect_offset) (info_ptr - reader->buffer), |
18507 | abbrev); | |
cd9983dd | 18508 | |
48fbe735 | 18509 | info_ptr = pdi.read (reader, *abbrev, info_ptr + bytes_read); |
72bf9492 DJ |
18510 | |
18511 | /* This two-pass algorithm for processing partial symbols has a | |
18512 | high cost in cache pressure. Thus, handle some simple cases | |
18513 | here which cover the majority of C partial symbols. DIEs | |
18514 | which neither have specification tags in them, nor could have | |
18515 | specification tags elsewhere pointing at them, can simply be | |
18516 | processed and discarded. | |
18517 | ||
18518 | This segment is also optional; scan_partial_symbols and | |
18519 | add_partial_symbol will handle these DIEs if we chain | |
18520 | them in normally. When compilers which do not emit large | |
18521 | quantities of duplicate debug information are more common, | |
18522 | this code can probably be removed. */ | |
18523 | ||
18524 | /* Any complete simple types at the top level (pretty much all | |
18525 | of them, for a language without namespaces), can be processed | |
18526 | directly. */ | |
18527 | if (parent_die == NULL | |
cd9983dd YQ |
18528 | && pdi.has_specification == 0 |
18529 | && pdi.is_declaration == 0 | |
18530 | && ((pdi.tag == DW_TAG_typedef && !pdi.has_children) | |
18531 | || pdi.tag == DW_TAG_base_type | |
18532 | || pdi.tag == DW_TAG_subrange_type)) | |
72bf9492 | 18533 | { |
cd9983dd YQ |
18534 | if (building_psymtab && pdi.name != NULL) |
18535 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, | |
79748972 | 18536 | VAR_DOMAIN, LOC_TYPEDEF, -1, |
75aedd27 | 18537 | psymbol_placement::STATIC, |
1762568f | 18538 | 0, cu->language, objfile); |
cd9983dd | 18539 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18540 | continue; |
18541 | } | |
18542 | ||
d8228535 JK |
18543 | /* The exception for DW_TAG_typedef with has_children above is |
18544 | a workaround of GCC PR debug/47510. In the case of this complaint | |
a737d952 | 18545 | type_name_or_error will error on such types later. |
d8228535 JK |
18546 | |
18547 | GDB skipped children of DW_TAG_typedef by the shortcut above and then | |
18548 | it could not find the child DIEs referenced later, this is checked | |
18549 | above. In correct DWARF DW_TAG_typedef should have no children. */ | |
18550 | ||
cd9983dd | 18551 | if (pdi.tag == DW_TAG_typedef && pdi.has_children) |
b98664d3 | 18552 | complaint (_("DW_TAG_typedef has childen - GCC PR debug/47510 bug " |
9d8780f0 | 18553 | "- DIE at %s [in module %s]"), |
cd9983dd | 18554 | sect_offset_str (pdi.sect_off), objfile_name (objfile)); |
d8228535 | 18555 | |
72bf9492 DJ |
18556 | /* If we're at the second level, and we're an enumerator, and |
18557 | our parent has no specification (meaning possibly lives in a | |
18558 | namespace elsewhere), then we can add the partial symbol now | |
18559 | instead of queueing it. */ | |
cd9983dd | 18560 | if (pdi.tag == DW_TAG_enumerator |
72bf9492 DJ |
18561 | && parent_die != NULL |
18562 | && parent_die->die_parent == NULL | |
18563 | && parent_die->tag == DW_TAG_enumeration_type | |
18564 | && parent_die->has_specification == 0) | |
18565 | { | |
cd9983dd | 18566 | if (pdi.name == NULL) |
b98664d3 | 18567 | complaint (_("malformed enumerator DIE ignored")); |
72bf9492 | 18568 | else if (building_psymtab) |
cd9983dd | 18569 | add_psymbol_to_list (pdi.name, strlen (pdi.name), 0, |
79748972 | 18570 | VAR_DOMAIN, LOC_CONST, -1, |
9c37b5ae | 18571 | cu->language == language_cplus |
75aedd27 TT |
18572 | ? psymbol_placement::GLOBAL |
18573 | : psymbol_placement::STATIC, | |
1762568f | 18574 | 0, cu->language, objfile); |
72bf9492 | 18575 | |
cd9983dd | 18576 | info_ptr = locate_pdi_sibling (reader, &pdi, info_ptr); |
72bf9492 DJ |
18577 | continue; |
18578 | } | |
18579 | ||
cd9983dd | 18580 | struct partial_die_info *part_die |
6f06d47b | 18581 | = new (&cu->comp_unit_obstack) partial_die_info (pdi); |
cd9983dd | 18582 | |
72bf9492 DJ |
18583 | /* We'll save this DIE so link it in. */ |
18584 | part_die->die_parent = parent_die; | |
18585 | part_die->die_sibling = NULL; | |
18586 | part_die->die_child = NULL; | |
18587 | ||
18588 | if (last_die && last_die == parent_die) | |
18589 | last_die->die_child = part_die; | |
18590 | else if (last_die) | |
18591 | last_die->die_sibling = part_die; | |
18592 | ||
18593 | last_die = part_die; | |
18594 | ||
18595 | if (first_die == NULL) | |
18596 | first_die = part_die; | |
18597 | ||
18598 | /* Maybe add the DIE to the hash table. Not all DIEs that we | |
18599 | find interesting need to be in the hash table, because we | |
18600 | also have the parent/sibling/child chains; only those that we | |
18601 | might refer to by offset later during partial symbol reading. | |
18602 | ||
18603 | For now this means things that might have be the target of a | |
18604 | DW_AT_specification, DW_AT_abstract_origin, or | |
18605 | DW_AT_extension. DW_AT_extension will refer only to | |
18606 | namespaces; DW_AT_abstract_origin refers to functions (and | |
18607 | many things under the function DIE, but we do not recurse | |
18608 | into function DIEs during partial symbol reading) and | |
18609 | possibly variables as well; DW_AT_specification refers to | |
18610 | declarations. Declarations ought to have the DW_AT_declaration | |
18611 | flag. It happens that GCC forgets to put it in sometimes, but | |
18612 | only for functions, not for types. | |
18613 | ||
18614 | Adding more things than necessary to the hash table is harmless | |
18615 | except for the performance cost. Adding too few will result in | |
5afb4e99 DJ |
18616 | wasted time in find_partial_die, when we reread the compilation |
18617 | unit with load_all_dies set. */ | |
72bf9492 | 18618 | |
5afb4e99 | 18619 | if (load_all |
72929c62 | 18620 | || abbrev->tag == DW_TAG_constant |
5afb4e99 | 18621 | || abbrev->tag == DW_TAG_subprogram |
72bf9492 DJ |
18622 | || abbrev->tag == DW_TAG_variable |
18623 | || abbrev->tag == DW_TAG_namespace | |
18624 | || part_die->is_declaration) | |
18625 | { | |
18626 | void **slot; | |
18627 | ||
18628 | slot = htab_find_slot_with_hash (cu->partial_dies, part_die, | |
9c541725 PA |
18629 | to_underlying (part_die->sect_off), |
18630 | INSERT); | |
72bf9492 DJ |
18631 | *slot = part_die; |
18632 | } | |
18633 | ||
72bf9492 | 18634 | /* For some DIEs we want to follow their children (if any). For C |
bc30ff58 | 18635 | we have no reason to follow the children of structures; for other |
98bfdba5 PA |
18636 | languages we have to, so that we can get at method physnames |
18637 | to infer fully qualified class names, for DW_AT_specification, | |
18638 | and for C++ template arguments. For C++, we also look one level | |
18639 | inside functions to find template arguments (if the name of the | |
18640 | function does not already contain the template arguments). | |
bc30ff58 JB |
18641 | |
18642 | For Ada, we need to scan the children of subprograms and lexical | |
18643 | blocks as well because Ada allows the definition of nested | |
18644 | entities that could be interesting for the debugger, such as | |
18645 | nested subprograms for instance. */ | |
72bf9492 | 18646 | if (last_die->has_children |
5afb4e99 DJ |
18647 | && (load_all |
18648 | || last_die->tag == DW_TAG_namespace | |
f55ee35c | 18649 | || last_die->tag == DW_TAG_module |
72bf9492 | 18650 | || last_die->tag == DW_TAG_enumeration_type |
98bfdba5 PA |
18651 | || (cu->language == language_cplus |
18652 | && last_die->tag == DW_TAG_subprogram | |
18653 | && (last_die->name == NULL | |
18654 | || strchr (last_die->name, '<') == NULL)) | |
72bf9492 DJ |
18655 | || (cu->language != language_c |
18656 | && (last_die->tag == DW_TAG_class_type | |
680b30c7 | 18657 | || last_die->tag == DW_TAG_interface_type |
72bf9492 | 18658 | || last_die->tag == DW_TAG_structure_type |
bc30ff58 JB |
18659 | || last_die->tag == DW_TAG_union_type)) |
18660 | || (cu->language == language_ada | |
18661 | && (last_die->tag == DW_TAG_subprogram | |
18662 | || last_die->tag == DW_TAG_lexical_block)))) | |
72bf9492 DJ |
18663 | { |
18664 | nesting_level++; | |
18665 | parent_die = last_die; | |
18666 | continue; | |
18667 | } | |
18668 | ||
18669 | /* Otherwise we skip to the next sibling, if any. */ | |
dee91e82 | 18670 | info_ptr = locate_pdi_sibling (reader, last_die, info_ptr); |
72bf9492 DJ |
18671 | |
18672 | /* Back to the top, do it again. */ | |
18673 | } | |
18674 | } | |
18675 | ||
6f06d47b YQ |
18676 | partial_die_info::partial_die_info (sect_offset sect_off_, |
18677 | struct abbrev_info *abbrev) | |
18678 | : partial_die_info (sect_off_, abbrev->tag, abbrev->has_children) | |
18679 | { | |
18680 | } | |
18681 | ||
35cc7ed7 YQ |
18682 | /* Read a minimal amount of information into the minimal die structure. |
18683 | INFO_PTR should point just after the initial uleb128 of a DIE. */ | |
c906108c | 18684 | |
48fbe735 YQ |
18685 | const gdb_byte * |
18686 | partial_die_info::read (const struct die_reader_specs *reader, | |
18687 | const struct abbrev_info &abbrev, const gdb_byte *info_ptr) | |
c906108c | 18688 | { |
dee91e82 | 18689 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
18690 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18691 | = cu->per_cu->dwarf2_per_objfile; | |
fa238c03 | 18692 | unsigned int i; |
c5aa993b | 18693 | int has_low_pc_attr = 0; |
c906108c | 18694 | int has_high_pc_attr = 0; |
91da1414 | 18695 | int high_pc_relative = 0; |
c906108c | 18696 | |
fd0a254f | 18697 | for (i = 0; i < abbrev.num_attrs; ++i) |
c906108c | 18698 | { |
48fbe735 YQ |
18699 | struct attribute attr; |
18700 | ||
fd0a254f | 18701 | info_ptr = read_attribute (reader, &attr, &abbrev.attrs[i], info_ptr); |
c906108c SS |
18702 | |
18703 | /* Store the data if it is of an attribute we want to keep in a | |
c5aa993b | 18704 | partial symbol table. */ |
c906108c SS |
18705 | switch (attr.name) |
18706 | { | |
18707 | case DW_AT_name: | |
48fbe735 | 18708 | switch (tag) |
71c25dea TT |
18709 | { |
18710 | case DW_TAG_compile_unit: | |
95554aad | 18711 | case DW_TAG_partial_unit: |
348e048f | 18712 | case DW_TAG_type_unit: |
71c25dea TT |
18713 | /* Compilation units have a DW_AT_name that is a filename, not |
18714 | a source language identifier. */ | |
18715 | case DW_TAG_enumeration_type: | |
18716 | case DW_TAG_enumerator: | |
18717 | /* These tags always have simple identifiers already; no need | |
18718 | to canonicalize them. */ | |
48fbe735 | 18719 | name = DW_STRING (&attr); |
71c25dea TT |
18720 | break; |
18721 | default: | |
48fbe735 YQ |
18722 | { |
18723 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
18724 | ||
18725 | name | |
18726 | = dwarf2_canonicalize_name (DW_STRING (&attr), cu, | |
18727 | &objfile->per_bfd->storage_obstack); | |
18728 | } | |
71c25dea TT |
18729 | break; |
18730 | } | |
c906108c | 18731 | break; |
31ef98ae | 18732 | case DW_AT_linkage_name: |
c906108c | 18733 | case DW_AT_MIPS_linkage_name: |
31ef98ae TT |
18734 | /* Note that both forms of linkage name might appear. We |
18735 | assume they will be the same, and we only store the last | |
18736 | one we see. */ | |
94af9270 | 18737 | if (cu->language == language_ada) |
48fbe735 YQ |
18738 | name = DW_STRING (&attr); |
18739 | linkage_name = DW_STRING (&attr); | |
c906108c SS |
18740 | break; |
18741 | case DW_AT_low_pc: | |
18742 | has_low_pc_attr = 1; | |
48fbe735 | 18743 | lowpc = attr_value_as_address (&attr); |
c906108c SS |
18744 | break; |
18745 | case DW_AT_high_pc: | |
18746 | has_high_pc_attr = 1; | |
48fbe735 | 18747 | highpc = attr_value_as_address (&attr); |
31aa7e4e JB |
18748 | if (cu->header.version >= 4 && attr_form_is_constant (&attr)) |
18749 | high_pc_relative = 1; | |
c906108c SS |
18750 | break; |
18751 | case DW_AT_location: | |
0963b4bd | 18752 | /* Support the .debug_loc offsets. */ |
8e19ed76 PS |
18753 | if (attr_form_is_block (&attr)) |
18754 | { | |
48fbe735 | 18755 | d.locdesc = DW_BLOCK (&attr); |
8e19ed76 | 18756 | } |
3690dd37 | 18757 | else if (attr_form_is_section_offset (&attr)) |
8e19ed76 | 18758 | { |
4d3c2250 | 18759 | dwarf2_complex_location_expr_complaint (); |
8e19ed76 PS |
18760 | } |
18761 | else | |
18762 | { | |
4d3c2250 KB |
18763 | dwarf2_invalid_attrib_class_complaint ("DW_AT_location", |
18764 | "partial symbol information"); | |
8e19ed76 | 18765 | } |
c906108c | 18766 | break; |
c906108c | 18767 | case DW_AT_external: |
48fbe735 | 18768 | is_external = DW_UNSND (&attr); |
c906108c SS |
18769 | break; |
18770 | case DW_AT_declaration: | |
48fbe735 | 18771 | is_declaration = DW_UNSND (&attr); |
c906108c SS |
18772 | break; |
18773 | case DW_AT_type: | |
48fbe735 | 18774 | has_type = 1; |
c906108c SS |
18775 | break; |
18776 | case DW_AT_abstract_origin: | |
18777 | case DW_AT_specification: | |
72bf9492 | 18778 | case DW_AT_extension: |
48fbe735 YQ |
18779 | has_specification = 1; |
18780 | spec_offset = dwarf2_get_ref_die_offset (&attr); | |
18781 | spec_is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 | 18782 | || cu->per_cu->is_dwz); |
c906108c SS |
18783 | break; |
18784 | case DW_AT_sibling: | |
18785 | /* Ignore absolute siblings, they might point outside of | |
18786 | the current compile unit. */ | |
18787 | if (attr.form == DW_FORM_ref_addr) | |
b98664d3 | 18788 | complaint (_("ignoring absolute DW_AT_sibling")); |
c906108c | 18789 | else |
b9502d3f | 18790 | { |
48fbe735 | 18791 | const gdb_byte *buffer = reader->buffer; |
9c541725 PA |
18792 | sect_offset off = dwarf2_get_ref_die_offset (&attr); |
18793 | const gdb_byte *sibling_ptr = buffer + to_underlying (off); | |
b9502d3f WN |
18794 | |
18795 | if (sibling_ptr < info_ptr) | |
b98664d3 | 18796 | complaint (_("DW_AT_sibling points backwards")); |
22869d73 KS |
18797 | else if (sibling_ptr > reader->buffer_end) |
18798 | dwarf2_section_buffer_overflow_complaint (reader->die_section); | |
b9502d3f | 18799 | else |
48fbe735 | 18800 | sibling = sibling_ptr; |
b9502d3f | 18801 | } |
c906108c | 18802 | break; |
fa4028e9 | 18803 | case DW_AT_byte_size: |
48fbe735 | 18804 | has_byte_size = 1; |
fa4028e9 | 18805 | break; |
ff908ebf | 18806 | case DW_AT_const_value: |
48fbe735 | 18807 | has_const_value = 1; |
ff908ebf | 18808 | break; |
68511cec CES |
18809 | case DW_AT_calling_convention: |
18810 | /* DWARF doesn't provide a way to identify a program's source-level | |
18811 | entry point. DW_AT_calling_convention attributes are only meant | |
18812 | to describe functions' calling conventions. | |
18813 | ||
18814 | However, because it's a necessary piece of information in | |
0c1b455e TT |
18815 | Fortran, and before DWARF 4 DW_CC_program was the only |
18816 | piece of debugging information whose definition refers to | |
18817 | a 'main program' at all, several compilers marked Fortran | |
18818 | main programs with DW_CC_program --- even when those | |
18819 | functions use the standard calling conventions. | |
18820 | ||
18821 | Although DWARF now specifies a way to provide this | |
18822 | information, we support this practice for backward | |
18823 | compatibility. */ | |
68511cec | 18824 | if (DW_UNSND (&attr) == DW_CC_program |
0c1b455e | 18825 | && cu->language == language_fortran) |
48fbe735 | 18826 | main_subprogram = 1; |
68511cec | 18827 | break; |
481860b3 GB |
18828 | case DW_AT_inline: |
18829 | if (DW_UNSND (&attr) == DW_INL_inlined | |
18830 | || DW_UNSND (&attr) == DW_INL_declared_inlined) | |
48fbe735 | 18831 | may_be_inlined = 1; |
481860b3 | 18832 | break; |
95554aad TT |
18833 | |
18834 | case DW_AT_import: | |
48fbe735 | 18835 | if (tag == DW_TAG_imported_unit) |
36586728 | 18836 | { |
48fbe735 YQ |
18837 | d.sect_off = dwarf2_get_ref_die_offset (&attr); |
18838 | is_dwz = (attr.form == DW_FORM_GNU_ref_alt | |
36586728 TT |
18839 | || cu->per_cu->is_dwz); |
18840 | } | |
95554aad TT |
18841 | break; |
18842 | ||
0c1b455e | 18843 | case DW_AT_main_subprogram: |
48fbe735 | 18844 | main_subprogram = DW_UNSND (&attr); |
0c1b455e TT |
18845 | break; |
18846 | ||
05caa1d2 TT |
18847 | case DW_AT_ranges: |
18848 | { | |
18849 | /* It would be nice to reuse dwarf2_get_pc_bounds here, | |
18850 | but that requires a full DIE, so instead we just | |
18851 | reimplement it. */ | |
18852 | int need_ranges_base = tag != DW_TAG_compile_unit; | |
18853 | unsigned int ranges_offset = (DW_UNSND (&attr) | |
18854 | + (need_ranges_base | |
18855 | ? cu->ranges_base | |
18856 | : 0)); | |
18857 | ||
18858 | /* Value of the DW_AT_ranges attribute is the offset in the | |
18859 | .debug_ranges section. */ | |
18860 | if (dwarf2_ranges_read (ranges_offset, &lowpc, &highpc, cu, | |
18861 | nullptr)) | |
18862 | has_pc_info = 1; | |
18863 | } | |
18864 | break; | |
18865 | ||
c906108c SS |
18866 | default: |
18867 | break; | |
18868 | } | |
18869 | } | |
18870 | ||
91da1414 | 18871 | if (high_pc_relative) |
48fbe735 | 18872 | highpc += lowpc; |
91da1414 | 18873 | |
9373cf26 JK |
18874 | if (has_low_pc_attr && has_high_pc_attr) |
18875 | { | |
18876 | /* When using the GNU linker, .gnu.linkonce. sections are used to | |
18877 | eliminate duplicate copies of functions and vtables and such. | |
18878 | The linker will arbitrarily choose one and discard the others. | |
18879 | The AT_*_pc values for such functions refer to local labels in | |
18880 | these sections. If the section from that file was discarded, the | |
18881 | labels are not in the output, so the relocs get a value of 0. | |
18882 | If this is a discarded function, mark the pc bounds as invalid, | |
18883 | so that GDB will ignore it. */ | |
48fbe735 | 18884 | if (lowpc == 0 && !dwarf2_per_objfile->has_section_at_zero) |
9373cf26 | 18885 | { |
48fbe735 | 18886 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18887 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18888 | |
b98664d3 | 18889 | complaint (_("DW_AT_low_pc %s is zero " |
9d8780f0 | 18890 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18891 | paddress (gdbarch, lowpc), |
18892 | sect_offset_str (sect_off), | |
9d8780f0 | 18893 | objfile_name (objfile)); |
9373cf26 JK |
18894 | } |
18895 | /* dwarf2_get_pc_bounds has also the strict low < high requirement. */ | |
48fbe735 | 18896 | else if (lowpc >= highpc) |
9373cf26 | 18897 | { |
48fbe735 | 18898 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
bb5ed363 | 18899 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
9373cf26 | 18900 | |
b98664d3 | 18901 | complaint (_("DW_AT_low_pc %s is not < DW_AT_high_pc %s " |
9d8780f0 | 18902 | "for DIE at %s [in module %s]"), |
48fbe735 YQ |
18903 | paddress (gdbarch, lowpc), |
18904 | paddress (gdbarch, highpc), | |
18905 | sect_offset_str (sect_off), | |
9c541725 | 18906 | objfile_name (objfile)); |
9373cf26 JK |
18907 | } |
18908 | else | |
48fbe735 | 18909 | has_pc_info = 1; |
9373cf26 | 18910 | } |
85cbf3d3 | 18911 | |
c906108c SS |
18912 | return info_ptr; |
18913 | } | |
18914 | ||
72bf9492 DJ |
18915 | /* Find a cached partial DIE at OFFSET in CU. */ |
18916 | ||
d590ff25 YQ |
18917 | struct partial_die_info * |
18918 | dwarf2_cu::find_partial_die (sect_offset sect_off) | |
72bf9492 DJ |
18919 | { |
18920 | struct partial_die_info *lookup_die = NULL; | |
6f06d47b | 18921 | struct partial_die_info part_die (sect_off); |
72bf9492 | 18922 | |
9a3c8263 | 18923 | lookup_die = ((struct partial_die_info *) |
d590ff25 | 18924 | htab_find_with_hash (partial_dies, &part_die, |
9c541725 | 18925 | to_underlying (sect_off))); |
72bf9492 | 18926 | |
72bf9492 DJ |
18927 | return lookup_die; |
18928 | } | |
18929 | ||
348e048f DE |
18930 | /* Find a partial DIE at OFFSET, which may or may not be in CU, |
18931 | except in the case of .debug_types DIEs which do not reference | |
18932 | outside their CU (they do however referencing other types via | |
55f1336d | 18933 | DW_FORM_ref_sig8). */ |
72bf9492 | 18934 | |
122cf0f2 | 18935 | static const struct cu_partial_die_info |
9c541725 | 18936 | find_partial_die (sect_offset sect_off, int offset_in_dwz, struct dwarf2_cu *cu) |
72bf9492 | 18937 | { |
518817b3 SM |
18938 | struct dwarf2_per_objfile *dwarf2_per_objfile |
18939 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 18940 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
5afb4e99 DJ |
18941 | struct dwarf2_per_cu_data *per_cu = NULL; |
18942 | struct partial_die_info *pd = NULL; | |
72bf9492 | 18943 | |
36586728 | 18944 | if (offset_in_dwz == cu->per_cu->is_dwz |
9c541725 | 18945 | && offset_in_cu_p (&cu->header, sect_off)) |
5afb4e99 | 18946 | { |
d590ff25 | 18947 | pd = cu->find_partial_die (sect_off); |
5afb4e99 | 18948 | if (pd != NULL) |
fb816e8b | 18949 | return { cu, pd }; |
0d99eb77 DE |
18950 | /* We missed recording what we needed. |
18951 | Load all dies and try again. */ | |
18952 | per_cu = cu->per_cu; | |
5afb4e99 | 18953 | } |
0d99eb77 DE |
18954 | else |
18955 | { | |
18956 | /* TUs don't reference other CUs/TUs (except via type signatures). */ | |
3019eac3 | 18957 | if (cu->per_cu->is_debug_types) |
0d99eb77 | 18958 | { |
9d8780f0 SM |
18959 | error (_("Dwarf Error: Type Unit at offset %s contains" |
18960 | " external reference to offset %s [in module %s].\n"), | |
18961 | sect_offset_str (cu->header.sect_off), sect_offset_str (sect_off), | |
0d99eb77 DE |
18962 | bfd_get_filename (objfile->obfd)); |
18963 | } | |
9c541725 | 18964 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 18965 | dwarf2_per_objfile); |
72bf9492 | 18966 | |
0d99eb77 DE |
18967 | if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL) |
18968 | load_partial_comp_unit (per_cu); | |
ae038cb0 | 18969 | |
0d99eb77 | 18970 | per_cu->cu->last_used = 0; |
d590ff25 | 18971 | pd = per_cu->cu->find_partial_die (sect_off); |
0d99eb77 | 18972 | } |
5afb4e99 | 18973 | |
dee91e82 DE |
18974 | /* If we didn't find it, and not all dies have been loaded, |
18975 | load them all and try again. */ | |
18976 | ||
5afb4e99 DJ |
18977 | if (pd == NULL && per_cu->load_all_dies == 0) |
18978 | { | |
5afb4e99 | 18979 | per_cu->load_all_dies = 1; |
fd820528 DE |
18980 | |
18981 | /* This is nasty. When we reread the DIEs, somewhere up the call chain | |
18982 | THIS_CU->cu may already be in use. So we can't just free it and | |
18983 | replace its DIEs with the ones we read in. Instead, we leave those | |
18984 | DIEs alone (which can still be in use, e.g. in scan_partial_symbols), | |
18985 | and clobber THIS_CU->cu->partial_dies with the hash table for the new | |
18986 | set. */ | |
dee91e82 | 18987 | load_partial_comp_unit (per_cu); |
5afb4e99 | 18988 | |
d590ff25 | 18989 | pd = per_cu->cu->find_partial_die (sect_off); |
5afb4e99 DJ |
18990 | } |
18991 | ||
18992 | if (pd == NULL) | |
18993 | internal_error (__FILE__, __LINE__, | |
9d8780f0 | 18994 | _("could not find partial DIE %s " |
3e43a32a | 18995 | "in cache [from module %s]\n"), |
9d8780f0 | 18996 | sect_offset_str (sect_off), bfd_get_filename (objfile->obfd)); |
fb816e8b | 18997 | return { per_cu->cu, pd }; |
72bf9492 DJ |
18998 | } |
18999 | ||
abc72ce4 DE |
19000 | /* See if we can figure out if the class lives in a namespace. We do |
19001 | this by looking for a member function; its demangled name will | |
19002 | contain namespace info, if there is any. */ | |
19003 | ||
19004 | static void | |
19005 | guess_partial_die_structure_name (struct partial_die_info *struct_pdi, | |
19006 | struct dwarf2_cu *cu) | |
19007 | { | |
19008 | /* NOTE: carlton/2003-10-07: Getting the info this way changes | |
19009 | what template types look like, because the demangler | |
19010 | frequently doesn't give the same name as the debug info. We | |
19011 | could fix this by only using the demangled name to get the | |
19012 | prefix (but see comment in read_structure_type). */ | |
19013 | ||
19014 | struct partial_die_info *real_pdi; | |
19015 | struct partial_die_info *child_pdi; | |
19016 | ||
19017 | /* If this DIE (this DIE's specification, if any) has a parent, then | |
19018 | we should not do this. We'll prepend the parent's fully qualified | |
19019 | name when we create the partial symbol. */ | |
19020 | ||
19021 | real_pdi = struct_pdi; | |
19022 | while (real_pdi->has_specification) | |
fb816e8b | 19023 | { |
122cf0f2 AB |
19024 | auto res = find_partial_die (real_pdi->spec_offset, |
19025 | real_pdi->spec_is_dwz, cu); | |
fb816e8b TV |
19026 | real_pdi = res.pdi; |
19027 | cu = res.cu; | |
19028 | } | |
abc72ce4 DE |
19029 | |
19030 | if (real_pdi->die_parent != NULL) | |
19031 | return; | |
19032 | ||
19033 | for (child_pdi = struct_pdi->die_child; | |
19034 | child_pdi != NULL; | |
19035 | child_pdi = child_pdi->die_sibling) | |
19036 | { | |
19037 | if (child_pdi->tag == DW_TAG_subprogram | |
19038 | && child_pdi->linkage_name != NULL) | |
19039 | { | |
19040 | char *actual_class_name | |
19041 | = language_class_name_from_physname (cu->language_defn, | |
19042 | child_pdi->linkage_name); | |
19043 | if (actual_class_name != NULL) | |
19044 | { | |
518817b3 | 19045 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 | 19046 | struct_pdi->name |
224c3ddb | 19047 | = ((const char *) |
e3b94546 | 19048 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
19049 | actual_class_name, |
19050 | strlen (actual_class_name))); | |
abc72ce4 DE |
19051 | xfree (actual_class_name); |
19052 | } | |
19053 | break; | |
19054 | } | |
19055 | } | |
19056 | } | |
19057 | ||
52356b79 YQ |
19058 | void |
19059 | partial_die_info::fixup (struct dwarf2_cu *cu) | |
72bf9492 | 19060 | { |
abc72ce4 DE |
19061 | /* Once we've fixed up a die, there's no point in doing so again. |
19062 | This also avoids a memory leak if we were to call | |
19063 | guess_partial_die_structure_name multiple times. */ | |
52356b79 | 19064 | if (fixup_called) |
abc72ce4 DE |
19065 | return; |
19066 | ||
72bf9492 DJ |
19067 | /* If we found a reference attribute and the DIE has no name, try |
19068 | to find a name in the referred to DIE. */ | |
19069 | ||
52356b79 | 19070 | if (name == NULL && has_specification) |
72bf9492 DJ |
19071 | { |
19072 | struct partial_die_info *spec_die; | |
72bf9492 | 19073 | |
122cf0f2 | 19074 | auto res = find_partial_die (spec_offset, spec_is_dwz, cu); |
fb816e8b TV |
19075 | spec_die = res.pdi; |
19076 | cu = res.cu; | |
72bf9492 | 19077 | |
52356b79 | 19078 | spec_die->fixup (cu); |
72bf9492 DJ |
19079 | |
19080 | if (spec_die->name) | |
19081 | { | |
52356b79 | 19082 | name = spec_die->name; |
72bf9492 DJ |
19083 | |
19084 | /* Copy DW_AT_external attribute if it is set. */ | |
19085 | if (spec_die->is_external) | |
52356b79 | 19086 | is_external = spec_die->is_external; |
72bf9492 DJ |
19087 | } |
19088 | } | |
19089 | ||
19090 | /* Set default names for some unnamed DIEs. */ | |
72bf9492 | 19091 | |
52356b79 YQ |
19092 | if (name == NULL && tag == DW_TAG_namespace) |
19093 | name = CP_ANONYMOUS_NAMESPACE_STR; | |
72bf9492 | 19094 | |
abc72ce4 DE |
19095 | /* If there is no parent die to provide a namespace, and there are |
19096 | children, see if we can determine the namespace from their linkage | |
122d1940 | 19097 | name. */ |
abc72ce4 | 19098 | if (cu->language == language_cplus |
518817b3 SM |
19099 | && !VEC_empty (dwarf2_section_info_def, |
19100 | cu->per_cu->dwarf2_per_objfile->types) | |
52356b79 YQ |
19101 | && die_parent == NULL |
19102 | && has_children | |
19103 | && (tag == DW_TAG_class_type | |
19104 | || tag == DW_TAG_structure_type | |
19105 | || tag == DW_TAG_union_type)) | |
19106 | guess_partial_die_structure_name (this, cu); | |
abc72ce4 | 19107 | |
53832f31 TT |
19108 | /* GCC might emit a nameless struct or union that has a linkage |
19109 | name. See http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
52356b79 YQ |
19110 | if (name == NULL |
19111 | && (tag == DW_TAG_class_type | |
19112 | || tag == DW_TAG_interface_type | |
19113 | || tag == DW_TAG_structure_type | |
19114 | || tag == DW_TAG_union_type) | |
19115 | && linkage_name != NULL) | |
53832f31 TT |
19116 | { |
19117 | char *demangled; | |
19118 | ||
52356b79 | 19119 | demangled = gdb_demangle (linkage_name, DMGL_TYPES); |
53832f31 TT |
19120 | if (demangled) |
19121 | { | |
96408a79 SA |
19122 | const char *base; |
19123 | ||
19124 | /* Strip any leading namespaces/classes, keep only the base name. | |
19125 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
19126 | base = strrchr (demangled, ':'); | |
19127 | if (base && base > demangled && base[-1] == ':') | |
19128 | base++; | |
19129 | else | |
19130 | base = demangled; | |
19131 | ||
518817b3 | 19132 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
52356b79 | 19133 | name |
224c3ddb | 19134 | = ((const char *) |
e3b94546 | 19135 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 19136 | base, strlen (base))); |
53832f31 TT |
19137 | xfree (demangled); |
19138 | } | |
19139 | } | |
19140 | ||
52356b79 | 19141 | fixup_called = 1; |
72bf9492 DJ |
19142 | } |
19143 | ||
a8329558 | 19144 | /* Read an attribute value described by an attribute form. */ |
c906108c | 19145 | |
d521ce57 | 19146 | static const gdb_byte * |
dee91e82 DE |
19147 | read_attribute_value (const struct die_reader_specs *reader, |
19148 | struct attribute *attr, unsigned form, | |
43988095 | 19149 | LONGEST implicit_const, const gdb_byte *info_ptr) |
c906108c | 19150 | { |
dee91e82 | 19151 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19152 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19153 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 19154 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 19155 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
dee91e82 | 19156 | bfd *abfd = reader->abfd; |
e7c27a73 | 19157 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19158 | unsigned int bytes_read; |
19159 | struct dwarf_block *blk; | |
19160 | ||
aead7601 | 19161 | attr->form = (enum dwarf_form) form; |
a8329558 | 19162 | switch (form) |
c906108c | 19163 | { |
c906108c | 19164 | case DW_FORM_ref_addr: |
ae411497 | 19165 | if (cu->header.version == 2) |
4568ecf9 | 19166 | DW_UNSND (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
ae411497 | 19167 | else |
4568ecf9 DE |
19168 | DW_UNSND (attr) = read_offset (abfd, info_ptr, |
19169 | &cu->header, &bytes_read); | |
ae411497 TT |
19170 | info_ptr += bytes_read; |
19171 | break; | |
36586728 TT |
19172 | case DW_FORM_GNU_ref_alt: |
19173 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19174 | info_ptr += bytes_read; | |
19175 | break; | |
ae411497 | 19176 | case DW_FORM_addr: |
e7c27a73 | 19177 | DW_ADDR (attr) = read_address (abfd, info_ptr, cu, &bytes_read); |
3e29f34a | 19178 | DW_ADDR (attr) = gdbarch_adjust_dwarf2_addr (gdbarch, DW_ADDR (attr)); |
107d2387 | 19179 | info_ptr += bytes_read; |
c906108c SS |
19180 | break; |
19181 | case DW_FORM_block2: | |
7b5a2f43 | 19182 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19183 | blk->size = read_2_bytes (abfd, info_ptr); |
19184 | info_ptr += 2; | |
19185 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19186 | info_ptr += blk->size; | |
19187 | DW_BLOCK (attr) = blk; | |
19188 | break; | |
19189 | case DW_FORM_block4: | |
7b5a2f43 | 19190 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19191 | blk->size = read_4_bytes (abfd, info_ptr); |
19192 | info_ptr += 4; | |
19193 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19194 | info_ptr += blk->size; | |
19195 | DW_BLOCK (attr) = blk; | |
19196 | break; | |
19197 | case DW_FORM_data2: | |
19198 | DW_UNSND (attr) = read_2_bytes (abfd, info_ptr); | |
19199 | info_ptr += 2; | |
19200 | break; | |
19201 | case DW_FORM_data4: | |
19202 | DW_UNSND (attr) = read_4_bytes (abfd, info_ptr); | |
19203 | info_ptr += 4; | |
19204 | break; | |
19205 | case DW_FORM_data8: | |
19206 | DW_UNSND (attr) = read_8_bytes (abfd, info_ptr); | |
19207 | info_ptr += 8; | |
19208 | break; | |
0224619f JK |
19209 | case DW_FORM_data16: |
19210 | blk = dwarf_alloc_block (cu); | |
19211 | blk->size = 16; | |
19212 | blk->data = read_n_bytes (abfd, info_ptr, 16); | |
19213 | info_ptr += 16; | |
19214 | DW_BLOCK (attr) = blk; | |
19215 | break; | |
2dc7f7b3 TT |
19216 | case DW_FORM_sec_offset: |
19217 | DW_UNSND (attr) = read_offset (abfd, info_ptr, &cu->header, &bytes_read); | |
19218 | info_ptr += bytes_read; | |
19219 | break; | |
c906108c | 19220 | case DW_FORM_string: |
9b1c24c8 | 19221 | DW_STRING (attr) = read_direct_string (abfd, info_ptr, &bytes_read); |
8285870a | 19222 | DW_STRING_IS_CANONICAL (attr) = 0; |
c906108c SS |
19223 | info_ptr += bytes_read; |
19224 | break; | |
4bdf3d34 | 19225 | case DW_FORM_strp: |
36586728 TT |
19226 | if (!cu->per_cu->is_dwz) |
19227 | { | |
ed2dc618 SM |
19228 | DW_STRING (attr) = read_indirect_string (dwarf2_per_objfile, |
19229 | abfd, info_ptr, cu_header, | |
36586728 TT |
19230 | &bytes_read); |
19231 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19232 | info_ptr += bytes_read; | |
19233 | break; | |
19234 | } | |
19235 | /* FALLTHROUGH */ | |
43988095 JK |
19236 | case DW_FORM_line_strp: |
19237 | if (!cu->per_cu->is_dwz) | |
19238 | { | |
ed2dc618 SM |
19239 | DW_STRING (attr) = read_indirect_line_string (dwarf2_per_objfile, |
19240 | abfd, info_ptr, | |
43988095 JK |
19241 | cu_header, &bytes_read); |
19242 | DW_STRING_IS_CANONICAL (attr) = 0; | |
19243 | info_ptr += bytes_read; | |
19244 | break; | |
19245 | } | |
19246 | /* FALLTHROUGH */ | |
36586728 TT |
19247 | case DW_FORM_GNU_strp_alt: |
19248 | { | |
ed2dc618 | 19249 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
19250 | LONGEST str_offset = read_offset (abfd, info_ptr, cu_header, |
19251 | &bytes_read); | |
19252 | ||
ed2dc618 SM |
19253 | DW_STRING (attr) = read_indirect_string_from_dwz (objfile, |
19254 | dwz, str_offset); | |
36586728 TT |
19255 | DW_STRING_IS_CANONICAL (attr) = 0; |
19256 | info_ptr += bytes_read; | |
19257 | } | |
4bdf3d34 | 19258 | break; |
2dc7f7b3 | 19259 | case DW_FORM_exprloc: |
c906108c | 19260 | case DW_FORM_block: |
7b5a2f43 | 19261 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19262 | blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19263 | info_ptr += bytes_read; | |
19264 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19265 | info_ptr += blk->size; | |
19266 | DW_BLOCK (attr) = blk; | |
19267 | break; | |
19268 | case DW_FORM_block1: | |
7b5a2f43 | 19269 | blk = dwarf_alloc_block (cu); |
c906108c SS |
19270 | blk->size = read_1_byte (abfd, info_ptr); |
19271 | info_ptr += 1; | |
19272 | blk->data = read_n_bytes (abfd, info_ptr, blk->size); | |
19273 | info_ptr += blk->size; | |
19274 | DW_BLOCK (attr) = blk; | |
19275 | break; | |
19276 | case DW_FORM_data1: | |
19277 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19278 | info_ptr += 1; | |
19279 | break; | |
19280 | case DW_FORM_flag: | |
19281 | DW_UNSND (attr) = read_1_byte (abfd, info_ptr); | |
19282 | info_ptr += 1; | |
19283 | break; | |
2dc7f7b3 TT |
19284 | case DW_FORM_flag_present: |
19285 | DW_UNSND (attr) = 1; | |
19286 | break; | |
c906108c SS |
19287 | case DW_FORM_sdata: |
19288 | DW_SND (attr) = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19289 | info_ptr += bytes_read; | |
19290 | break; | |
19291 | case DW_FORM_udata: | |
19292 | DW_UNSND (attr) = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19293 | info_ptr += bytes_read; | |
19294 | break; | |
19295 | case DW_FORM_ref1: | |
9c541725 | 19296 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19297 | + read_1_byte (abfd, info_ptr)); |
c906108c SS |
19298 | info_ptr += 1; |
19299 | break; | |
19300 | case DW_FORM_ref2: | |
9c541725 | 19301 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19302 | + read_2_bytes (abfd, info_ptr)); |
c906108c SS |
19303 | info_ptr += 2; |
19304 | break; | |
19305 | case DW_FORM_ref4: | |
9c541725 | 19306 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19307 | + read_4_bytes (abfd, info_ptr)); |
c906108c SS |
19308 | info_ptr += 4; |
19309 | break; | |
613e1657 | 19310 | case DW_FORM_ref8: |
9c541725 | 19311 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19312 | + read_8_bytes (abfd, info_ptr)); |
613e1657 KB |
19313 | info_ptr += 8; |
19314 | break; | |
55f1336d | 19315 | case DW_FORM_ref_sig8: |
ac9ec31b | 19316 | DW_SIGNATURE (attr) = read_8_bytes (abfd, info_ptr); |
348e048f DE |
19317 | info_ptr += 8; |
19318 | break; | |
c906108c | 19319 | case DW_FORM_ref_udata: |
9c541725 | 19320 | DW_UNSND (attr) = (to_underlying (cu->header.sect_off) |
4568ecf9 | 19321 | + read_unsigned_leb128 (abfd, info_ptr, &bytes_read)); |
c906108c SS |
19322 | info_ptr += bytes_read; |
19323 | break; | |
c906108c | 19324 | case DW_FORM_indirect: |
a8329558 KW |
19325 | form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); |
19326 | info_ptr += bytes_read; | |
43988095 JK |
19327 | if (form == DW_FORM_implicit_const) |
19328 | { | |
19329 | implicit_const = read_signed_leb128 (abfd, info_ptr, &bytes_read); | |
19330 | info_ptr += bytes_read; | |
19331 | } | |
19332 | info_ptr = read_attribute_value (reader, attr, form, implicit_const, | |
19333 | info_ptr); | |
19334 | break; | |
19335 | case DW_FORM_implicit_const: | |
19336 | DW_SND (attr) = implicit_const; | |
a8329558 | 19337 | break; |
336d760d | 19338 | case DW_FORM_addrx: |
3019eac3 DE |
19339 | case DW_FORM_GNU_addr_index: |
19340 | if (reader->dwo_file == NULL) | |
19341 | { | |
19342 | /* For now flag a hard error. | |
19343 | Later we can turn this into a complaint. */ | |
19344 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19345 | dwarf_form_name (form), | |
19346 | bfd_get_filename (abfd)); | |
19347 | } | |
19348 | DW_ADDR (attr) = read_addr_index_from_leb128 (cu, info_ptr, &bytes_read); | |
19349 | info_ptr += bytes_read; | |
19350 | break; | |
cf532bd1 | 19351 | case DW_FORM_strx: |
15f18d14 AT |
19352 | case DW_FORM_strx1: |
19353 | case DW_FORM_strx2: | |
19354 | case DW_FORM_strx3: | |
19355 | case DW_FORM_strx4: | |
3019eac3 DE |
19356 | case DW_FORM_GNU_str_index: |
19357 | if (reader->dwo_file == NULL) | |
19358 | { | |
19359 | /* For now flag a hard error. | |
19360 | Later we can turn this into a complaint if warranted. */ | |
19361 | error (_("Dwarf Error: %s found in non-DWO CU [in module %s]"), | |
19362 | dwarf_form_name (form), | |
19363 | bfd_get_filename (abfd)); | |
19364 | } | |
19365 | { | |
15f18d14 AT |
19366 | ULONGEST str_index; |
19367 | if (form == DW_FORM_strx1) | |
19368 | { | |
19369 | str_index = read_1_byte (abfd, info_ptr); | |
19370 | info_ptr += 1; | |
19371 | } | |
19372 | else if (form == DW_FORM_strx2) | |
19373 | { | |
19374 | str_index = read_2_bytes (abfd, info_ptr); | |
19375 | info_ptr += 2; | |
19376 | } | |
19377 | else if (form == DW_FORM_strx3) | |
19378 | { | |
19379 | str_index = read_3_bytes (abfd, info_ptr); | |
19380 | info_ptr += 3; | |
19381 | } | |
19382 | else if (form == DW_FORM_strx4) | |
19383 | { | |
19384 | str_index = read_4_bytes (abfd, info_ptr); | |
19385 | info_ptr += 4; | |
19386 | } | |
19387 | else | |
19388 | { | |
19389 | str_index = read_unsigned_leb128 (abfd, info_ptr, &bytes_read); | |
19390 | info_ptr += bytes_read; | |
19391 | } | |
342587c4 | 19392 | DW_STRING (attr) = read_str_index (reader, str_index); |
3019eac3 | 19393 | DW_STRING_IS_CANONICAL (attr) = 0; |
3019eac3 DE |
19394 | } |
19395 | break; | |
c906108c | 19396 | default: |
8a3fe4f8 | 19397 | error (_("Dwarf Error: Cannot handle %s in DWARF reader [in module %s]"), |
659b0389 ML |
19398 | dwarf_form_name (form), |
19399 | bfd_get_filename (abfd)); | |
c906108c | 19400 | } |
28e94949 | 19401 | |
36586728 | 19402 | /* Super hack. */ |
7771576e | 19403 | if (cu->per_cu->is_dwz && attr_form_is_ref (attr)) |
36586728 TT |
19404 | attr->form = DW_FORM_GNU_ref_alt; |
19405 | ||
28e94949 JB |
19406 | /* We have seen instances where the compiler tried to emit a byte |
19407 | size attribute of -1 which ended up being encoded as an unsigned | |
19408 | 0xffffffff. Although 0xffffffff is technically a valid size value, | |
19409 | an object of this size seems pretty unlikely so we can relatively | |
19410 | safely treat these cases as if the size attribute was invalid and | |
19411 | treat them as zero by default. */ | |
19412 | if (attr->name == DW_AT_byte_size | |
19413 | && form == DW_FORM_data4 | |
19414 | && DW_UNSND (attr) >= 0xffffffff) | |
01c66ae6 JB |
19415 | { |
19416 | complaint | |
b98664d3 | 19417 | (_("Suspicious DW_AT_byte_size value treated as zero instead of %s"), |
43bbcdc2 | 19418 | hex_string (DW_UNSND (attr))); |
01c66ae6 JB |
19419 | DW_UNSND (attr) = 0; |
19420 | } | |
28e94949 | 19421 | |
c906108c SS |
19422 | return info_ptr; |
19423 | } | |
19424 | ||
a8329558 KW |
19425 | /* Read an attribute described by an abbreviated attribute. */ |
19426 | ||
d521ce57 | 19427 | static const gdb_byte * |
dee91e82 DE |
19428 | read_attribute (const struct die_reader_specs *reader, |
19429 | struct attribute *attr, struct attr_abbrev *abbrev, | |
d521ce57 | 19430 | const gdb_byte *info_ptr) |
a8329558 KW |
19431 | { |
19432 | attr->name = abbrev->name; | |
43988095 JK |
19433 | return read_attribute_value (reader, attr, abbrev->form, |
19434 | abbrev->implicit_const, info_ptr); | |
a8329558 KW |
19435 | } |
19436 | ||
0963b4bd | 19437 | /* Read dwarf information from a buffer. */ |
c906108c SS |
19438 | |
19439 | static unsigned int | |
a1855c1d | 19440 | read_1_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19441 | { |
fe1b8b76 | 19442 | return bfd_get_8 (abfd, buf); |
c906108c SS |
19443 | } |
19444 | ||
19445 | static int | |
a1855c1d | 19446 | read_1_signed_byte (bfd *abfd, const gdb_byte *buf) |
c906108c | 19447 | { |
fe1b8b76 | 19448 | return bfd_get_signed_8 (abfd, buf); |
c906108c SS |
19449 | } |
19450 | ||
19451 | static unsigned int | |
a1855c1d | 19452 | read_2_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19453 | { |
fe1b8b76 | 19454 | return bfd_get_16 (abfd, buf); |
c906108c SS |
19455 | } |
19456 | ||
21ae7a4d | 19457 | static int |
a1855c1d | 19458 | read_2_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19459 | { |
19460 | return bfd_get_signed_16 (abfd, buf); | |
19461 | } | |
19462 | ||
15f18d14 AT |
19463 | static unsigned int |
19464 | read_3_bytes (bfd *abfd, const gdb_byte *buf) | |
19465 | { | |
19466 | unsigned int result = 0; | |
19467 | for (int i = 0; i < 3; ++i) | |
19468 | { | |
19469 | unsigned char byte = bfd_get_8 (abfd, buf); | |
19470 | buf++; | |
19471 | result |= ((unsigned int) byte << (i * 8)); | |
19472 | } | |
19473 | return result; | |
19474 | } | |
19475 | ||
c906108c | 19476 | static unsigned int |
a1855c1d | 19477 | read_4_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19478 | { |
fe1b8b76 | 19479 | return bfd_get_32 (abfd, buf); |
c906108c SS |
19480 | } |
19481 | ||
21ae7a4d | 19482 | static int |
a1855c1d | 19483 | read_4_signed_bytes (bfd *abfd, const gdb_byte *buf) |
21ae7a4d JK |
19484 | { |
19485 | return bfd_get_signed_32 (abfd, buf); | |
19486 | } | |
19487 | ||
93311388 | 19488 | static ULONGEST |
a1855c1d | 19489 | read_8_bytes (bfd *abfd, const gdb_byte *buf) |
c906108c | 19490 | { |
fe1b8b76 | 19491 | return bfd_get_64 (abfd, buf); |
c906108c SS |
19492 | } |
19493 | ||
19494 | static CORE_ADDR | |
d521ce57 | 19495 | read_address (bfd *abfd, const gdb_byte *buf, struct dwarf2_cu *cu, |
891d2f0b | 19496 | unsigned int *bytes_read) |
c906108c | 19497 | { |
e7c27a73 | 19498 | struct comp_unit_head *cu_header = &cu->header; |
c906108c SS |
19499 | CORE_ADDR retval = 0; |
19500 | ||
107d2387 | 19501 | if (cu_header->signed_addr_p) |
c906108c | 19502 | { |
107d2387 AC |
19503 | switch (cu_header->addr_size) |
19504 | { | |
19505 | case 2: | |
fe1b8b76 | 19506 | retval = bfd_get_signed_16 (abfd, buf); |
107d2387 AC |
19507 | break; |
19508 | case 4: | |
fe1b8b76 | 19509 | retval = bfd_get_signed_32 (abfd, buf); |
107d2387 AC |
19510 | break; |
19511 | case 8: | |
fe1b8b76 | 19512 | retval = bfd_get_signed_64 (abfd, buf); |
107d2387 AC |
19513 | break; |
19514 | default: | |
8e65ff28 | 19515 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 19516 | _("read_address: bad switch, signed [in module %s]"), |
659b0389 | 19517 | bfd_get_filename (abfd)); |
107d2387 AC |
19518 | } |
19519 | } | |
19520 | else | |
19521 | { | |
19522 | switch (cu_header->addr_size) | |
19523 | { | |
19524 | case 2: | |
fe1b8b76 | 19525 | retval = bfd_get_16 (abfd, buf); |
107d2387 AC |
19526 | break; |
19527 | case 4: | |
fe1b8b76 | 19528 | retval = bfd_get_32 (abfd, buf); |
107d2387 AC |
19529 | break; |
19530 | case 8: | |
fe1b8b76 | 19531 | retval = bfd_get_64 (abfd, buf); |
107d2387 AC |
19532 | break; |
19533 | default: | |
8e65ff28 | 19534 | internal_error (__FILE__, __LINE__, |
a73c6dcd MS |
19535 | _("read_address: bad switch, " |
19536 | "unsigned [in module %s]"), | |
659b0389 | 19537 | bfd_get_filename (abfd)); |
107d2387 | 19538 | } |
c906108c | 19539 | } |
64367e0a | 19540 | |
107d2387 AC |
19541 | *bytes_read = cu_header->addr_size; |
19542 | return retval; | |
c906108c SS |
19543 | } |
19544 | ||
f7ef9339 | 19545 | /* Read the initial length from a section. The (draft) DWARF 3 |
613e1657 KB |
19546 | specification allows the initial length to take up either 4 bytes |
19547 | or 12 bytes. If the first 4 bytes are 0xffffffff, then the next 8 | |
19548 | bytes describe the length and all offsets will be 8 bytes in length | |
19549 | instead of 4. | |
19550 | ||
f7ef9339 KB |
19551 | An older, non-standard 64-bit format is also handled by this |
19552 | function. The older format in question stores the initial length | |
19553 | as an 8-byte quantity without an escape value. Lengths greater | |
19554 | than 2^32 aren't very common which means that the initial 4 bytes | |
19555 | is almost always zero. Since a length value of zero doesn't make | |
19556 | sense for the 32-bit format, this initial zero can be considered to | |
19557 | be an escape value which indicates the presence of the older 64-bit | |
19558 | format. As written, the code can't detect (old format) lengths | |
917c78fc MK |
19559 | greater than 4GB. If it becomes necessary to handle lengths |
19560 | somewhat larger than 4GB, we could allow other small values (such | |
19561 | as the non-sensical values of 1, 2, and 3) to also be used as | |
19562 | escape values indicating the presence of the old format. | |
f7ef9339 | 19563 | |
917c78fc MK |
19564 | The value returned via bytes_read should be used to increment the |
19565 | relevant pointer after calling read_initial_length(). | |
c764a876 | 19566 | |
613e1657 KB |
19567 | [ Note: read_initial_length() and read_offset() are based on the |
19568 | document entitled "DWARF Debugging Information Format", revision | |
f7ef9339 | 19569 | 3, draft 8, dated November 19, 2001. This document was obtained |
613e1657 KB |
19570 | from: |
19571 | ||
f7ef9339 | 19572 | http://reality.sgiweb.org/davea/dwarf3-draft8-011125.pdf |
6e70227d | 19573 | |
613e1657 KB |
19574 | This document is only a draft and is subject to change. (So beware.) |
19575 | ||
f7ef9339 | 19576 | Details regarding the older, non-standard 64-bit format were |
917c78fc MK |
19577 | determined empirically by examining 64-bit ELF files produced by |
19578 | the SGI toolchain on an IRIX 6.5 machine. | |
f7ef9339 KB |
19579 | |
19580 | - Kevin, July 16, 2002 | |
613e1657 KB |
19581 | ] */ |
19582 | ||
19583 | static LONGEST | |
d521ce57 | 19584 | read_initial_length (bfd *abfd, const gdb_byte *buf, unsigned int *bytes_read) |
613e1657 | 19585 | { |
fe1b8b76 | 19586 | LONGEST length = bfd_get_32 (abfd, buf); |
613e1657 | 19587 | |
dd373385 | 19588 | if (length == 0xffffffff) |
613e1657 | 19589 | { |
fe1b8b76 | 19590 | length = bfd_get_64 (abfd, buf + 4); |
613e1657 | 19591 | *bytes_read = 12; |
613e1657 | 19592 | } |
dd373385 | 19593 | else if (length == 0) |
f7ef9339 | 19594 | { |
dd373385 | 19595 | /* Handle the (non-standard) 64-bit DWARF2 format used by IRIX. */ |
fe1b8b76 | 19596 | length = bfd_get_64 (abfd, buf); |
f7ef9339 | 19597 | *bytes_read = 8; |
f7ef9339 | 19598 | } |
613e1657 KB |
19599 | else |
19600 | { | |
19601 | *bytes_read = 4; | |
613e1657 KB |
19602 | } |
19603 | ||
c764a876 DE |
19604 | return length; |
19605 | } | |
dd373385 | 19606 | |
c764a876 DE |
19607 | /* Cover function for read_initial_length. |
19608 | Returns the length of the object at BUF, and stores the size of the | |
19609 | initial length in *BYTES_READ and stores the size that offsets will be in | |
19610 | *OFFSET_SIZE. | |
19611 | If the initial length size is not equivalent to that specified in | |
19612 | CU_HEADER then issue a complaint. | |
19613 | This is useful when reading non-comp-unit headers. */ | |
dd373385 | 19614 | |
c764a876 | 19615 | static LONGEST |
d521ce57 | 19616 | read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf, |
c764a876 DE |
19617 | const struct comp_unit_head *cu_header, |
19618 | unsigned int *bytes_read, | |
19619 | unsigned int *offset_size) | |
19620 | { | |
19621 | LONGEST length = read_initial_length (abfd, buf, bytes_read); | |
19622 | ||
19623 | gdb_assert (cu_header->initial_length_size == 4 | |
19624 | || cu_header->initial_length_size == 8 | |
19625 | || cu_header->initial_length_size == 12); | |
19626 | ||
19627 | if (cu_header->initial_length_size != *bytes_read) | |
b98664d3 | 19628 | complaint (_("intermixed 32-bit and 64-bit DWARF sections")); |
dd373385 | 19629 | |
c764a876 | 19630 | *offset_size = (*bytes_read == 4) ? 4 : 8; |
dd373385 | 19631 | return length; |
613e1657 KB |
19632 | } |
19633 | ||
19634 | /* Read an offset from the data stream. The size of the offset is | |
917c78fc | 19635 | given by cu_header->offset_size. */ |
613e1657 KB |
19636 | |
19637 | static LONGEST | |
d521ce57 TT |
19638 | read_offset (bfd *abfd, const gdb_byte *buf, |
19639 | const struct comp_unit_head *cu_header, | |
891d2f0b | 19640 | unsigned int *bytes_read) |
c764a876 DE |
19641 | { |
19642 | LONGEST offset = read_offset_1 (abfd, buf, cu_header->offset_size); | |
9a619af0 | 19643 | |
c764a876 DE |
19644 | *bytes_read = cu_header->offset_size; |
19645 | return offset; | |
19646 | } | |
19647 | ||
19648 | /* Read an offset from the data stream. */ | |
19649 | ||
19650 | static LONGEST | |
d521ce57 | 19651 | read_offset_1 (bfd *abfd, const gdb_byte *buf, unsigned int offset_size) |
613e1657 KB |
19652 | { |
19653 | LONGEST retval = 0; | |
19654 | ||
c764a876 | 19655 | switch (offset_size) |
613e1657 KB |
19656 | { |
19657 | case 4: | |
fe1b8b76 | 19658 | retval = bfd_get_32 (abfd, buf); |
613e1657 KB |
19659 | break; |
19660 | case 8: | |
fe1b8b76 | 19661 | retval = bfd_get_64 (abfd, buf); |
613e1657 KB |
19662 | break; |
19663 | default: | |
8e65ff28 | 19664 | internal_error (__FILE__, __LINE__, |
c764a876 | 19665 | _("read_offset_1: bad switch [in module %s]"), |
659b0389 | 19666 | bfd_get_filename (abfd)); |
613e1657 KB |
19667 | } |
19668 | ||
917c78fc | 19669 | return retval; |
613e1657 KB |
19670 | } |
19671 | ||
d521ce57 TT |
19672 | static const gdb_byte * |
19673 | read_n_bytes (bfd *abfd, const gdb_byte *buf, unsigned int size) | |
c906108c SS |
19674 | { |
19675 | /* If the size of a host char is 8 bits, we can return a pointer | |
19676 | to the buffer, otherwise we have to copy the data to a buffer | |
19677 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19678 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c | 19679 | return buf; |
c906108c SS |
19680 | } |
19681 | ||
d521ce57 TT |
19682 | static const char * |
19683 | read_direct_string (bfd *abfd, const gdb_byte *buf, | |
19684 | unsigned int *bytes_read_ptr) | |
c906108c SS |
19685 | { |
19686 | /* If the size of a host char is 8 bits, we can return a pointer | |
19687 | to the string, otherwise we have to copy the string to a buffer | |
19688 | allocated on the temporary obstack. */ | |
4bdf3d34 | 19689 | gdb_assert (HOST_CHAR_BIT == 8); |
c906108c SS |
19690 | if (*buf == '\0') |
19691 | { | |
19692 | *bytes_read_ptr = 1; | |
19693 | return NULL; | |
19694 | } | |
d521ce57 TT |
19695 | *bytes_read_ptr = strlen ((const char *) buf) + 1; |
19696 | return (const char *) buf; | |
4bdf3d34 JJ |
19697 | } |
19698 | ||
43988095 JK |
19699 | /* Return pointer to string at section SECT offset STR_OFFSET with error |
19700 | reporting strings FORM_NAME and SECT_NAME. */ | |
19701 | ||
d521ce57 | 19702 | static const char * |
ed2dc618 SM |
19703 | read_indirect_string_at_offset_from (struct objfile *objfile, |
19704 | bfd *abfd, LONGEST str_offset, | |
43988095 JK |
19705 | struct dwarf2_section_info *sect, |
19706 | const char *form_name, | |
19707 | const char *sect_name) | |
19708 | { | |
ed2dc618 | 19709 | dwarf2_read_section (objfile, sect); |
43988095 JK |
19710 | if (sect->buffer == NULL) |
19711 | error (_("%s used without %s section [in module %s]"), | |
19712 | form_name, sect_name, bfd_get_filename (abfd)); | |
19713 | if (str_offset >= sect->size) | |
19714 | error (_("%s pointing outside of %s section [in module %s]"), | |
19715 | form_name, sect_name, bfd_get_filename (abfd)); | |
4bdf3d34 | 19716 | gdb_assert (HOST_CHAR_BIT == 8); |
43988095 | 19717 | if (sect->buffer[str_offset] == '\0') |
4bdf3d34 | 19718 | return NULL; |
43988095 JK |
19719 | return (const char *) (sect->buffer + str_offset); |
19720 | } | |
19721 | ||
19722 | /* Return pointer to string at .debug_str offset STR_OFFSET. */ | |
19723 | ||
19724 | static const char * | |
ed2dc618 SM |
19725 | read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19726 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19727 | { |
ed2dc618 SM |
19728 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19729 | abfd, str_offset, | |
43988095 JK |
19730 | &dwarf2_per_objfile->str, |
19731 | "DW_FORM_strp", ".debug_str"); | |
19732 | } | |
19733 | ||
19734 | /* Return pointer to string at .debug_line_str offset STR_OFFSET. */ | |
19735 | ||
19736 | static const char * | |
ed2dc618 SM |
19737 | read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19738 | bfd *abfd, LONGEST str_offset) | |
43988095 | 19739 | { |
ed2dc618 SM |
19740 | return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile, |
19741 | abfd, str_offset, | |
43988095 JK |
19742 | &dwarf2_per_objfile->line_str, |
19743 | "DW_FORM_line_strp", | |
19744 | ".debug_line_str"); | |
c906108c SS |
19745 | } |
19746 | ||
36586728 TT |
19747 | /* Read a string at offset STR_OFFSET in the .debug_str section from |
19748 | the .dwz file DWZ. Throw an error if the offset is too large. If | |
19749 | the string consists of a single NUL byte, return NULL; otherwise | |
19750 | return a pointer to the string. */ | |
19751 | ||
d521ce57 | 19752 | static const char * |
ed2dc618 SM |
19753 | read_indirect_string_from_dwz (struct objfile *objfile, struct dwz_file *dwz, |
19754 | LONGEST str_offset) | |
36586728 | 19755 | { |
ed2dc618 | 19756 | dwarf2_read_section (objfile, &dwz->str); |
36586728 TT |
19757 | |
19758 | if (dwz->str.buffer == NULL) | |
19759 | error (_("DW_FORM_GNU_strp_alt used without .debug_str " | |
19760 | "section [in module %s]"), | |
19761 | bfd_get_filename (dwz->dwz_bfd)); | |
19762 | if (str_offset >= dwz->str.size) | |
19763 | error (_("DW_FORM_GNU_strp_alt pointing outside of " | |
19764 | ".debug_str section [in module %s]"), | |
19765 | bfd_get_filename (dwz->dwz_bfd)); | |
19766 | gdb_assert (HOST_CHAR_BIT == 8); | |
19767 | if (dwz->str.buffer[str_offset] == '\0') | |
19768 | return NULL; | |
d521ce57 | 19769 | return (const char *) (dwz->str.buffer + str_offset); |
36586728 TT |
19770 | } |
19771 | ||
43988095 JK |
19772 | /* Return pointer to string at .debug_str offset as read from BUF. |
19773 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19774 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19775 | ||
d521ce57 | 19776 | static const char * |
ed2dc618 SM |
19777 | read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd, |
19778 | const gdb_byte *buf, | |
cf2c3c16 TT |
19779 | const struct comp_unit_head *cu_header, |
19780 | unsigned int *bytes_read_ptr) | |
19781 | { | |
19782 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19783 | ||
ed2dc618 | 19784 | return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset); |
cf2c3c16 TT |
19785 | } |
19786 | ||
43988095 JK |
19787 | /* Return pointer to string at .debug_line_str offset as read from BUF. |
19788 | BUF is assumed to be in a compilation unit described by CU_HEADER. | |
19789 | Return *BYTES_READ_PTR count of bytes read from BUF. */ | |
19790 | ||
19791 | static const char * | |
ed2dc618 SM |
19792 | read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19793 | bfd *abfd, const gdb_byte *buf, | |
43988095 JK |
19794 | const struct comp_unit_head *cu_header, |
19795 | unsigned int *bytes_read_ptr) | |
19796 | { | |
19797 | LONGEST str_offset = read_offset (abfd, buf, cu_header, bytes_read_ptr); | |
19798 | ||
ed2dc618 SM |
19799 | return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd, |
19800 | str_offset); | |
43988095 JK |
19801 | } |
19802 | ||
19803 | ULONGEST | |
d521ce57 | 19804 | read_unsigned_leb128 (bfd *abfd, const gdb_byte *buf, |
43988095 | 19805 | unsigned int *bytes_read_ptr) |
c906108c | 19806 | { |
12df843f | 19807 | ULONGEST result; |
ce5d95e1 | 19808 | unsigned int num_read; |
870f88f7 | 19809 | int shift; |
c906108c SS |
19810 | unsigned char byte; |
19811 | ||
19812 | result = 0; | |
19813 | shift = 0; | |
19814 | num_read = 0; | |
c906108c SS |
19815 | while (1) |
19816 | { | |
fe1b8b76 | 19817 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19818 | buf++; |
19819 | num_read++; | |
12df843f | 19820 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19821 | if ((byte & 128) == 0) |
19822 | { | |
19823 | break; | |
19824 | } | |
19825 | shift += 7; | |
19826 | } | |
19827 | *bytes_read_ptr = num_read; | |
19828 | return result; | |
19829 | } | |
19830 | ||
12df843f | 19831 | static LONGEST |
d521ce57 TT |
19832 | read_signed_leb128 (bfd *abfd, const gdb_byte *buf, |
19833 | unsigned int *bytes_read_ptr) | |
c906108c | 19834 | { |
4dd1b460 | 19835 | ULONGEST result; |
870f88f7 | 19836 | int shift, num_read; |
c906108c SS |
19837 | unsigned char byte; |
19838 | ||
19839 | result = 0; | |
19840 | shift = 0; | |
c906108c | 19841 | num_read = 0; |
c906108c SS |
19842 | while (1) |
19843 | { | |
fe1b8b76 | 19844 | byte = bfd_get_8 (abfd, buf); |
c906108c SS |
19845 | buf++; |
19846 | num_read++; | |
4dd1b460 | 19847 | result |= ((ULONGEST) (byte & 127) << shift); |
c906108c SS |
19848 | shift += 7; |
19849 | if ((byte & 128) == 0) | |
19850 | { | |
19851 | break; | |
19852 | } | |
19853 | } | |
77e0b926 | 19854 | if ((shift < 8 * sizeof (result)) && (byte & 0x40)) |
4dd1b460 | 19855 | result |= -(((ULONGEST) 1) << shift); |
c906108c SS |
19856 | *bytes_read_ptr = num_read; |
19857 | return result; | |
19858 | } | |
19859 | ||
3019eac3 DE |
19860 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. |
19861 | ADDR_BASE is the DW_AT_GNU_addr_base attribute or zero. | |
19862 | ADDR_SIZE is the size of addresses from the CU header. */ | |
19863 | ||
19864 | static CORE_ADDR | |
ed2dc618 SM |
19865 | read_addr_index_1 (struct dwarf2_per_objfile *dwarf2_per_objfile, |
19866 | unsigned int addr_index, ULONGEST addr_base, int addr_size) | |
3019eac3 DE |
19867 | { |
19868 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
19869 | bfd *abfd = objfile->obfd; | |
19870 | const gdb_byte *info_ptr; | |
19871 | ||
19872 | dwarf2_read_section (objfile, &dwarf2_per_objfile->addr); | |
19873 | if (dwarf2_per_objfile->addr.buffer == NULL) | |
19874 | error (_("DW_FORM_addr_index used without .debug_addr section [in module %s]"), | |
4262abfb | 19875 | objfile_name (objfile)); |
3019eac3 DE |
19876 | if (addr_base + addr_index * addr_size >= dwarf2_per_objfile->addr.size) |
19877 | error (_("DW_FORM_addr_index pointing outside of " | |
19878 | ".debug_addr section [in module %s]"), | |
4262abfb | 19879 | objfile_name (objfile)); |
3019eac3 DE |
19880 | info_ptr = (dwarf2_per_objfile->addr.buffer |
19881 | + addr_base + addr_index * addr_size); | |
19882 | if (addr_size == 4) | |
19883 | return bfd_get_32 (abfd, info_ptr); | |
19884 | else | |
19885 | return bfd_get_64 (abfd, info_ptr); | |
19886 | } | |
19887 | ||
19888 | /* Given index ADDR_INDEX in .debug_addr, fetch the value. */ | |
19889 | ||
19890 | static CORE_ADDR | |
19891 | read_addr_index (struct dwarf2_cu *cu, unsigned int addr_index) | |
19892 | { | |
518817b3 SM |
19893 | return read_addr_index_1 (cu->per_cu->dwarf2_per_objfile, addr_index, |
19894 | cu->addr_base, cu->header.addr_size); | |
3019eac3 DE |
19895 | } |
19896 | ||
19897 | /* Given a pointer to an leb128 value, fetch the value from .debug_addr. */ | |
19898 | ||
19899 | static CORE_ADDR | |
d521ce57 | 19900 | read_addr_index_from_leb128 (struct dwarf2_cu *cu, const gdb_byte *info_ptr, |
3019eac3 DE |
19901 | unsigned int *bytes_read) |
19902 | { | |
518817b3 | 19903 | bfd *abfd = cu->per_cu->dwarf2_per_objfile->objfile->obfd; |
3019eac3 DE |
19904 | unsigned int addr_index = read_unsigned_leb128 (abfd, info_ptr, bytes_read); |
19905 | ||
19906 | return read_addr_index (cu, addr_index); | |
19907 | } | |
19908 | ||
19909 | /* Data structure to pass results from dwarf2_read_addr_index_reader | |
19910 | back to dwarf2_read_addr_index. */ | |
19911 | ||
19912 | struct dwarf2_read_addr_index_data | |
19913 | { | |
19914 | ULONGEST addr_base; | |
19915 | int addr_size; | |
19916 | }; | |
19917 | ||
19918 | /* die_reader_func for dwarf2_read_addr_index. */ | |
19919 | ||
19920 | static void | |
19921 | dwarf2_read_addr_index_reader (const struct die_reader_specs *reader, | |
d521ce57 | 19922 | const gdb_byte *info_ptr, |
3019eac3 DE |
19923 | struct die_info *comp_unit_die, |
19924 | int has_children, | |
19925 | void *data) | |
19926 | { | |
19927 | struct dwarf2_cu *cu = reader->cu; | |
19928 | struct dwarf2_read_addr_index_data *aidata = | |
19929 | (struct dwarf2_read_addr_index_data *) data; | |
19930 | ||
19931 | aidata->addr_base = cu->addr_base; | |
19932 | aidata->addr_size = cu->header.addr_size; | |
19933 | } | |
19934 | ||
19935 | /* Given an index in .debug_addr, fetch the value. | |
19936 | NOTE: This can be called during dwarf expression evaluation, | |
19937 | long after the debug information has been read, and thus per_cu->cu | |
19938 | may no longer exist. */ | |
19939 | ||
19940 | CORE_ADDR | |
19941 | dwarf2_read_addr_index (struct dwarf2_per_cu_data *per_cu, | |
19942 | unsigned int addr_index) | |
19943 | { | |
ed2dc618 | 19944 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
3019eac3 DE |
19945 | struct dwarf2_cu *cu = per_cu->cu; |
19946 | ULONGEST addr_base; | |
19947 | int addr_size; | |
19948 | ||
3019eac3 DE |
19949 | /* We need addr_base and addr_size. |
19950 | If we don't have PER_CU->cu, we have to get it. | |
19951 | Nasty, but the alternative is storing the needed info in PER_CU, | |
19952 | which at this point doesn't seem justified: it's not clear how frequently | |
19953 | it would get used and it would increase the size of every PER_CU. | |
19954 | Entry points like dwarf2_per_cu_addr_size do a similar thing | |
19955 | so we're not in uncharted territory here. | |
19956 | Alas we need to be a bit more complicated as addr_base is contained | |
19957 | in the DIE. | |
19958 | ||
19959 | We don't need to read the entire CU(/TU). | |
19960 | We just need the header and top level die. | |
a1b64ce1 | 19961 | |
3019eac3 | 19962 | IWBN to use the aging mechanism to let us lazily later discard the CU. |
a1b64ce1 | 19963 | For now we skip this optimization. */ |
3019eac3 DE |
19964 | |
19965 | if (cu != NULL) | |
19966 | { | |
19967 | addr_base = cu->addr_base; | |
19968 | addr_size = cu->header.addr_size; | |
19969 | } | |
19970 | else | |
19971 | { | |
19972 | struct dwarf2_read_addr_index_data aidata; | |
19973 | ||
a1b64ce1 DE |
19974 | /* Note: We can't use init_cutu_and_read_dies_simple here, |
19975 | we need addr_base. */ | |
58f0c718 | 19976 | init_cutu_and_read_dies (per_cu, NULL, 0, 0, false, |
a1b64ce1 | 19977 | dwarf2_read_addr_index_reader, &aidata); |
3019eac3 DE |
19978 | addr_base = aidata.addr_base; |
19979 | addr_size = aidata.addr_size; | |
19980 | } | |
19981 | ||
ed2dc618 SM |
19982 | return read_addr_index_1 (dwarf2_per_objfile, addr_index, addr_base, |
19983 | addr_size); | |
3019eac3 DE |
19984 | } |
19985 | ||
cf532bd1 | 19986 | /* Given a DW_FORM_GNU_str_index or DW_FORM_strx, fetch the string. |
57d63ce2 | 19987 | This is only used by the Fission support. */ |
3019eac3 | 19988 | |
d521ce57 | 19989 | static const char * |
342587c4 | 19990 | read_str_index (const struct die_reader_specs *reader, ULONGEST str_index) |
3019eac3 | 19991 | { |
ed2dc618 | 19992 | struct dwarf2_cu *cu = reader->cu; |
518817b3 SM |
19993 | struct dwarf2_per_objfile *dwarf2_per_objfile |
19994 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 19995 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
c5164cbc | 19996 | const char *objf_name = objfile_name (objfile); |
3019eac3 | 19997 | bfd *abfd = objfile->obfd; |
73869dc2 DE |
19998 | struct dwarf2_section_info *str_section = &reader->dwo_file->sections.str; |
19999 | struct dwarf2_section_info *str_offsets_section = | |
20000 | &reader->dwo_file->sections.str_offsets; | |
d521ce57 | 20001 | const gdb_byte *info_ptr; |
3019eac3 | 20002 | ULONGEST str_offset; |
cf532bd1 | 20003 | static const char form_name[] = "DW_FORM_GNU_str_index or DW_FORM_strx"; |
3019eac3 | 20004 | |
73869dc2 DE |
20005 | dwarf2_read_section (objfile, str_section); |
20006 | dwarf2_read_section (objfile, str_offsets_section); | |
20007 | if (str_section->buffer == NULL) | |
57d63ce2 | 20008 | error (_("%s used without .debug_str.dwo section" |
9d8780f0 SM |
20009 | " in CU at offset %s [in module %s]"), |
20010 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20011 | if (str_offsets_section->buffer == NULL) |
57d63ce2 | 20012 | error (_("%s used without .debug_str_offsets.dwo section" |
9d8780f0 SM |
20013 | " in CU at offset %s [in module %s]"), |
20014 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20015 | if (str_index * cu->header.offset_size >= str_offsets_section->size) |
57d63ce2 | 20016 | error (_("%s pointing outside of .debug_str_offsets.dwo" |
9d8780f0 SM |
20017 | " section in CU at offset %s [in module %s]"), |
20018 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20019 | info_ptr = (str_offsets_section->buffer |
3019eac3 DE |
20020 | + str_index * cu->header.offset_size); |
20021 | if (cu->header.offset_size == 4) | |
20022 | str_offset = bfd_get_32 (abfd, info_ptr); | |
20023 | else | |
20024 | str_offset = bfd_get_64 (abfd, info_ptr); | |
73869dc2 | 20025 | if (str_offset >= str_section->size) |
57d63ce2 | 20026 | error (_("Offset from %s pointing outside of" |
9d8780f0 SM |
20027 | " .debug_str.dwo section in CU at offset %s [in module %s]"), |
20028 | form_name, sect_offset_str (cu->header.sect_off), objf_name); | |
73869dc2 | 20029 | return (const char *) (str_section->buffer + str_offset); |
3019eac3 DE |
20030 | } |
20031 | ||
3019eac3 DE |
20032 | /* Return the length of an LEB128 number in BUF. */ |
20033 | ||
20034 | static int | |
20035 | leb128_size (const gdb_byte *buf) | |
20036 | { | |
20037 | const gdb_byte *begin = buf; | |
20038 | gdb_byte byte; | |
20039 | ||
20040 | while (1) | |
20041 | { | |
20042 | byte = *buf++; | |
20043 | if ((byte & 128) == 0) | |
20044 | return buf - begin; | |
20045 | } | |
20046 | } | |
20047 | ||
c906108c | 20048 | static void |
e142c38c | 20049 | set_cu_language (unsigned int lang, struct dwarf2_cu *cu) |
c906108c SS |
20050 | { |
20051 | switch (lang) | |
20052 | { | |
20053 | case DW_LANG_C89: | |
76bee0cc | 20054 | case DW_LANG_C99: |
0cfd832f | 20055 | case DW_LANG_C11: |
c906108c | 20056 | case DW_LANG_C: |
d1be3247 | 20057 | case DW_LANG_UPC: |
e142c38c | 20058 | cu->language = language_c; |
c906108c | 20059 | break; |
9c37b5ae | 20060 | case DW_LANG_Java: |
c906108c | 20061 | case DW_LANG_C_plus_plus: |
0cfd832f MW |
20062 | case DW_LANG_C_plus_plus_11: |
20063 | case DW_LANG_C_plus_plus_14: | |
e142c38c | 20064 | cu->language = language_cplus; |
c906108c | 20065 | break; |
6aecb9c2 JB |
20066 | case DW_LANG_D: |
20067 | cu->language = language_d; | |
20068 | break; | |
c906108c SS |
20069 | case DW_LANG_Fortran77: |
20070 | case DW_LANG_Fortran90: | |
b21b22e0 | 20071 | case DW_LANG_Fortran95: |
f7de9aab MW |
20072 | case DW_LANG_Fortran03: |
20073 | case DW_LANG_Fortran08: | |
e142c38c | 20074 | cu->language = language_fortran; |
c906108c | 20075 | break; |
a766d390 DE |
20076 | case DW_LANG_Go: |
20077 | cu->language = language_go; | |
20078 | break; | |
c906108c | 20079 | case DW_LANG_Mips_Assembler: |
e142c38c | 20080 | cu->language = language_asm; |
c906108c SS |
20081 | break; |
20082 | case DW_LANG_Ada83: | |
8aaf0b47 | 20083 | case DW_LANG_Ada95: |
bc5f45f8 JB |
20084 | cu->language = language_ada; |
20085 | break; | |
72019c9c GM |
20086 | case DW_LANG_Modula2: |
20087 | cu->language = language_m2; | |
20088 | break; | |
fe8e67fd PM |
20089 | case DW_LANG_Pascal83: |
20090 | cu->language = language_pascal; | |
20091 | break; | |
22566fbd DJ |
20092 | case DW_LANG_ObjC: |
20093 | cu->language = language_objc; | |
20094 | break; | |
c44af4eb TT |
20095 | case DW_LANG_Rust: |
20096 | case DW_LANG_Rust_old: | |
20097 | cu->language = language_rust; | |
20098 | break; | |
c906108c SS |
20099 | case DW_LANG_Cobol74: |
20100 | case DW_LANG_Cobol85: | |
c906108c | 20101 | default: |
e142c38c | 20102 | cu->language = language_minimal; |
c906108c SS |
20103 | break; |
20104 | } | |
e142c38c | 20105 | cu->language_defn = language_def (cu->language); |
c906108c SS |
20106 | } |
20107 | ||
20108 | /* Return the named attribute or NULL if not there. */ | |
20109 | ||
20110 | static struct attribute * | |
e142c38c | 20111 | dwarf2_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) |
c906108c | 20112 | { |
a48e046c | 20113 | for (;;) |
c906108c | 20114 | { |
a48e046c TT |
20115 | unsigned int i; |
20116 | struct attribute *spec = NULL; | |
20117 | ||
20118 | for (i = 0; i < die->num_attrs; ++i) | |
20119 | { | |
20120 | if (die->attrs[i].name == name) | |
20121 | return &die->attrs[i]; | |
20122 | if (die->attrs[i].name == DW_AT_specification | |
20123 | || die->attrs[i].name == DW_AT_abstract_origin) | |
20124 | spec = &die->attrs[i]; | |
20125 | } | |
20126 | ||
20127 | if (!spec) | |
20128 | break; | |
c906108c | 20129 | |
f2f0e013 | 20130 | die = follow_die_ref (die, spec, &cu); |
f2f0e013 | 20131 | } |
c5aa993b | 20132 | |
c906108c SS |
20133 | return NULL; |
20134 | } | |
20135 | ||
348e048f DE |
20136 | /* Return the named attribute or NULL if not there, |
20137 | but do not follow DW_AT_specification, etc. | |
20138 | This is for use in contexts where we're reading .debug_types dies. | |
20139 | Following DW_AT_specification, DW_AT_abstract_origin will take us | |
20140 | back up the chain, and we want to go down. */ | |
20141 | ||
20142 | static struct attribute * | |
45e58e77 | 20143 | dwarf2_attr_no_follow (struct die_info *die, unsigned int name) |
348e048f DE |
20144 | { |
20145 | unsigned int i; | |
20146 | ||
20147 | for (i = 0; i < die->num_attrs; ++i) | |
20148 | if (die->attrs[i].name == name) | |
20149 | return &die->attrs[i]; | |
20150 | ||
20151 | return NULL; | |
20152 | } | |
20153 | ||
7d45c7c3 KB |
20154 | /* Return the string associated with a string-typed attribute, or NULL if it |
20155 | is either not found or is of an incorrect type. */ | |
20156 | ||
20157 | static const char * | |
20158 | dwarf2_string_attr (struct die_info *die, unsigned int name, struct dwarf2_cu *cu) | |
20159 | { | |
20160 | struct attribute *attr; | |
20161 | const char *str = NULL; | |
20162 | ||
20163 | attr = dwarf2_attr (die, name, cu); | |
20164 | ||
20165 | if (attr != NULL) | |
20166 | { | |
43988095 | 20167 | if (attr->form == DW_FORM_strp || attr->form == DW_FORM_line_strp |
b3340438 | 20168 | || attr->form == DW_FORM_string |
cf532bd1 | 20169 | || attr->form == DW_FORM_strx |
b3340438 | 20170 | || attr->form == DW_FORM_GNU_str_index |
16eb6b2d | 20171 | || attr->form == DW_FORM_GNU_strp_alt) |
7d45c7c3 KB |
20172 | str = DW_STRING (attr); |
20173 | else | |
b98664d3 | 20174 | complaint (_("string type expected for attribute %s for " |
9d8780f0 SM |
20175 | "DIE at %s in module %s"), |
20176 | dwarf_attr_name (name), sect_offset_str (die->sect_off), | |
518817b3 | 20177 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
7d45c7c3 KB |
20178 | } |
20179 | ||
20180 | return str; | |
20181 | } | |
20182 | ||
05cf31d1 JB |
20183 | /* Return non-zero iff the attribute NAME is defined for the given DIE, |
20184 | and holds a non-zero value. This function should only be used for | |
2dc7f7b3 | 20185 | DW_FORM_flag or DW_FORM_flag_present attributes. */ |
05cf31d1 JB |
20186 | |
20187 | static int | |
20188 | dwarf2_flag_true_p (struct die_info *die, unsigned name, struct dwarf2_cu *cu) | |
20189 | { | |
20190 | struct attribute *attr = dwarf2_attr (die, name, cu); | |
20191 | ||
20192 | return (attr && DW_UNSND (attr)); | |
20193 | } | |
20194 | ||
3ca72b44 | 20195 | static int |
e142c38c | 20196 | die_is_declaration (struct die_info *die, struct dwarf2_cu *cu) |
3ca72b44 | 20197 | { |
05cf31d1 JB |
20198 | /* A DIE is a declaration if it has a DW_AT_declaration attribute |
20199 | which value is non-zero. However, we have to be careful with | |
20200 | DIEs having a DW_AT_specification attribute, because dwarf2_attr() | |
20201 | (via dwarf2_flag_true_p) follows this attribute. So we may | |
20202 | end up accidently finding a declaration attribute that belongs | |
20203 | to a different DIE referenced by the specification attribute, | |
20204 | even though the given DIE does not have a declaration attribute. */ | |
20205 | return (dwarf2_flag_true_p (die, DW_AT_declaration, cu) | |
20206 | && dwarf2_attr (die, DW_AT_specification, cu) == NULL); | |
3ca72b44 AC |
20207 | } |
20208 | ||
63d06c5c | 20209 | /* Return the die giving the specification for DIE, if there is |
f2f0e013 | 20210 | one. *SPEC_CU is the CU containing DIE on input, and the CU |
edb3359d DJ |
20211 | containing the return value on output. If there is no |
20212 | specification, but there is an abstract origin, that is | |
20213 | returned. */ | |
63d06c5c DC |
20214 | |
20215 | static struct die_info * | |
f2f0e013 | 20216 | die_specification (struct die_info *die, struct dwarf2_cu **spec_cu) |
63d06c5c | 20217 | { |
f2f0e013 DJ |
20218 | struct attribute *spec_attr = dwarf2_attr (die, DW_AT_specification, |
20219 | *spec_cu); | |
63d06c5c | 20220 | |
edb3359d DJ |
20221 | if (spec_attr == NULL) |
20222 | spec_attr = dwarf2_attr (die, DW_AT_abstract_origin, *spec_cu); | |
20223 | ||
63d06c5c DC |
20224 | if (spec_attr == NULL) |
20225 | return NULL; | |
20226 | else | |
f2f0e013 | 20227 | return follow_die_ref (die, spec_attr, spec_cu); |
63d06c5c | 20228 | } |
c906108c | 20229 | |
527f3840 JK |
20230 | /* Stub for free_line_header to match void * callback types. */ |
20231 | ||
20232 | static void | |
20233 | free_line_header_voidp (void *arg) | |
20234 | { | |
9a3c8263 | 20235 | struct line_header *lh = (struct line_header *) arg; |
527f3840 | 20236 | |
fff8551c | 20237 | delete lh; |
527f3840 JK |
20238 | } |
20239 | ||
fff8551c PA |
20240 | void |
20241 | line_header::add_include_dir (const char *include_dir) | |
c906108c | 20242 | { |
27e0867f | 20243 | if (dwarf_line_debug >= 2) |
fff8551c PA |
20244 | fprintf_unfiltered (gdb_stdlog, "Adding dir %zu: %s\n", |
20245 | include_dirs.size () + 1, include_dir); | |
27e0867f | 20246 | |
fff8551c | 20247 | include_dirs.push_back (include_dir); |
debd256d | 20248 | } |
6e70227d | 20249 | |
fff8551c PA |
20250 | void |
20251 | line_header::add_file_name (const char *name, | |
ecfb656c | 20252 | dir_index d_index, |
fff8551c PA |
20253 | unsigned int mod_time, |
20254 | unsigned int length) | |
debd256d | 20255 | { |
27e0867f DE |
20256 | if (dwarf_line_debug >= 2) |
20257 | fprintf_unfiltered (gdb_stdlog, "Adding file %u: %s\n", | |
fff8551c | 20258 | (unsigned) file_names.size () + 1, name); |
27e0867f | 20259 | |
ecfb656c | 20260 | file_names.emplace_back (name, d_index, mod_time, length); |
debd256d | 20261 | } |
6e70227d | 20262 | |
83769d0b | 20263 | /* A convenience function to find the proper .debug_line section for a CU. */ |
36586728 TT |
20264 | |
20265 | static struct dwarf2_section_info * | |
20266 | get_debug_line_section (struct dwarf2_cu *cu) | |
20267 | { | |
20268 | struct dwarf2_section_info *section; | |
518817b3 SM |
20269 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20270 | = cu->per_cu->dwarf2_per_objfile; | |
36586728 TT |
20271 | |
20272 | /* For TUs in DWO files, the DW_AT_stmt_list attribute lives in the | |
20273 | DWO file. */ | |
20274 | if (cu->dwo_unit && cu->per_cu->is_debug_types) | |
20275 | section = &cu->dwo_unit->dwo_file->sections.line; | |
20276 | else if (cu->per_cu->is_dwz) | |
20277 | { | |
ed2dc618 | 20278 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
36586728 TT |
20279 | |
20280 | section = &dwz->line; | |
20281 | } | |
20282 | else | |
20283 | section = &dwarf2_per_objfile->line; | |
20284 | ||
20285 | return section; | |
20286 | } | |
20287 | ||
43988095 JK |
20288 | /* Read directory or file name entry format, starting with byte of |
20289 | format count entries, ULEB128 pairs of entry formats, ULEB128 of | |
20290 | entries count and the entries themselves in the described entry | |
20291 | format. */ | |
20292 | ||
20293 | static void | |
ed2dc618 SM |
20294 | read_formatted_entries (struct dwarf2_per_objfile *dwarf2_per_objfile, |
20295 | bfd *abfd, const gdb_byte **bufp, | |
43988095 JK |
20296 | struct line_header *lh, |
20297 | const struct comp_unit_head *cu_header, | |
20298 | void (*callback) (struct line_header *lh, | |
20299 | const char *name, | |
ecfb656c | 20300 | dir_index d_index, |
43988095 JK |
20301 | unsigned int mod_time, |
20302 | unsigned int length)) | |
20303 | { | |
20304 | gdb_byte format_count, formati; | |
20305 | ULONGEST data_count, datai; | |
20306 | const gdb_byte *buf = *bufp; | |
20307 | const gdb_byte *format_header_data; | |
43988095 JK |
20308 | unsigned int bytes_read; |
20309 | ||
20310 | format_count = read_1_byte (abfd, buf); | |
20311 | buf += 1; | |
20312 | format_header_data = buf; | |
20313 | for (formati = 0; formati < format_count; formati++) | |
20314 | { | |
20315 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20316 | buf += bytes_read; | |
20317 | read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20318 | buf += bytes_read; | |
20319 | } | |
20320 | ||
20321 | data_count = read_unsigned_leb128 (abfd, buf, &bytes_read); | |
20322 | buf += bytes_read; | |
20323 | for (datai = 0; datai < data_count; datai++) | |
20324 | { | |
20325 | const gdb_byte *format = format_header_data; | |
20326 | struct file_entry fe; | |
20327 | ||
43988095 JK |
20328 | for (formati = 0; formati < format_count; formati++) |
20329 | { | |
ecfb656c | 20330 | ULONGEST content_type = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20331 | format += bytes_read; |
43988095 | 20332 | |
ecfb656c | 20333 | ULONGEST form = read_unsigned_leb128 (abfd, format, &bytes_read); |
43988095 | 20334 | format += bytes_read; |
ecfb656c PA |
20335 | |
20336 | gdb::optional<const char *> string; | |
20337 | gdb::optional<unsigned int> uint; | |
20338 | ||
43988095 JK |
20339 | switch (form) |
20340 | { | |
20341 | case DW_FORM_string: | |
ecfb656c | 20342 | string.emplace (read_direct_string (abfd, buf, &bytes_read)); |
43988095 JK |
20343 | buf += bytes_read; |
20344 | break; | |
20345 | ||
20346 | case DW_FORM_line_strp: | |
ed2dc618 SM |
20347 | string.emplace (read_indirect_line_string (dwarf2_per_objfile, |
20348 | abfd, buf, | |
ecfb656c PA |
20349 | cu_header, |
20350 | &bytes_read)); | |
43988095 JK |
20351 | buf += bytes_read; |
20352 | break; | |
20353 | ||
20354 | case DW_FORM_data1: | |
ecfb656c | 20355 | uint.emplace (read_1_byte (abfd, buf)); |
43988095 JK |
20356 | buf += 1; |
20357 | break; | |
20358 | ||
20359 | case DW_FORM_data2: | |
ecfb656c | 20360 | uint.emplace (read_2_bytes (abfd, buf)); |
43988095 JK |
20361 | buf += 2; |
20362 | break; | |
20363 | ||
20364 | case DW_FORM_data4: | |
ecfb656c | 20365 | uint.emplace (read_4_bytes (abfd, buf)); |
43988095 JK |
20366 | buf += 4; |
20367 | break; | |
20368 | ||
20369 | case DW_FORM_data8: | |
ecfb656c | 20370 | uint.emplace (read_8_bytes (abfd, buf)); |
43988095 JK |
20371 | buf += 8; |
20372 | break; | |
20373 | ||
20374 | case DW_FORM_udata: | |
ecfb656c | 20375 | uint.emplace (read_unsigned_leb128 (abfd, buf, &bytes_read)); |
43988095 JK |
20376 | buf += bytes_read; |
20377 | break; | |
20378 | ||
20379 | case DW_FORM_block: | |
20380 | /* It is valid only for DW_LNCT_timestamp which is ignored by | |
20381 | current GDB. */ | |
20382 | break; | |
20383 | } | |
ecfb656c PA |
20384 | |
20385 | switch (content_type) | |
20386 | { | |
20387 | case DW_LNCT_path: | |
20388 | if (string.has_value ()) | |
20389 | fe.name = *string; | |
20390 | break; | |
20391 | case DW_LNCT_directory_index: | |
20392 | if (uint.has_value ()) | |
20393 | fe.d_index = (dir_index) *uint; | |
20394 | break; | |
20395 | case DW_LNCT_timestamp: | |
20396 | if (uint.has_value ()) | |
20397 | fe.mod_time = *uint; | |
20398 | break; | |
20399 | case DW_LNCT_size: | |
20400 | if (uint.has_value ()) | |
20401 | fe.length = *uint; | |
20402 | break; | |
20403 | case DW_LNCT_MD5: | |
20404 | break; | |
20405 | default: | |
b98664d3 | 20406 | complaint (_("Unknown format content type %s"), |
ecfb656c PA |
20407 | pulongest (content_type)); |
20408 | } | |
43988095 JK |
20409 | } |
20410 | ||
ecfb656c | 20411 | callback (lh, fe.name, fe.d_index, fe.mod_time, fe.length); |
43988095 JK |
20412 | } |
20413 | ||
20414 | *bufp = buf; | |
20415 | } | |
20416 | ||
debd256d | 20417 | /* Read the statement program header starting at OFFSET in |
3019eac3 | 20418 | .debug_line, or .debug_line.dwo. Return a pointer |
6502dd73 | 20419 | to a struct line_header, allocated using xmalloc. |
cd366ee8 DE |
20420 | Returns NULL if there is a problem reading the header, e.g., if it |
20421 | has a version we don't understand. | |
debd256d JB |
20422 | |
20423 | NOTE: the strings in the include directory and file name tables of | |
3019eac3 DE |
20424 | the returned object point into the dwarf line section buffer, |
20425 | and must not be freed. */ | |
ae2de4f8 | 20426 | |
fff8551c | 20427 | static line_header_up |
9c541725 | 20428 | dwarf_decode_line_header (sect_offset sect_off, struct dwarf2_cu *cu) |
debd256d | 20429 | { |
d521ce57 | 20430 | const gdb_byte *line_ptr; |
c764a876 | 20431 | unsigned int bytes_read, offset_size; |
debd256d | 20432 | int i; |
d521ce57 | 20433 | const char *cur_dir, *cur_file; |
3019eac3 DE |
20434 | struct dwarf2_section_info *section; |
20435 | bfd *abfd; | |
518817b3 SM |
20436 | struct dwarf2_per_objfile *dwarf2_per_objfile |
20437 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 | 20438 | |
36586728 | 20439 | section = get_debug_line_section (cu); |
3019eac3 DE |
20440 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); |
20441 | if (section->buffer == NULL) | |
debd256d | 20442 | { |
3019eac3 | 20443 | if (cu->dwo_unit && cu->per_cu->is_debug_types) |
b98664d3 | 20444 | complaint (_("missing .debug_line.dwo section")); |
3019eac3 | 20445 | else |
b98664d3 | 20446 | complaint (_("missing .debug_line section")); |
debd256d JB |
20447 | return 0; |
20448 | } | |
20449 | ||
fceca515 DE |
20450 | /* We can't do this until we know the section is non-empty. |
20451 | Only then do we know we have such a section. */ | |
a32a8923 | 20452 | abfd = get_section_bfd_owner (section); |
fceca515 | 20453 | |
a738430d MK |
20454 | /* Make sure that at least there's room for the total_length field. |
20455 | That could be 12 bytes long, but we're just going to fudge that. */ | |
9c541725 | 20456 | if (to_underlying (sect_off) + 4 >= section->size) |
debd256d | 20457 | { |
4d3c2250 | 20458 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20459 | return 0; |
20460 | } | |
20461 | ||
fff8551c | 20462 | line_header_up lh (new line_header ()); |
debd256d | 20463 | |
9c541725 | 20464 | lh->sect_off = sect_off; |
527f3840 JK |
20465 | lh->offset_in_dwz = cu->per_cu->is_dwz; |
20466 | ||
9c541725 | 20467 | line_ptr = section->buffer + to_underlying (sect_off); |
debd256d | 20468 | |
a738430d | 20469 | /* Read in the header. */ |
6e70227d | 20470 | lh->total_length = |
c764a876 DE |
20471 | read_checked_initial_length_and_offset (abfd, line_ptr, &cu->header, |
20472 | &bytes_read, &offset_size); | |
debd256d | 20473 | line_ptr += bytes_read; |
3019eac3 | 20474 | if (line_ptr + lh->total_length > (section->buffer + section->size)) |
debd256d | 20475 | { |
4d3c2250 | 20476 | dwarf2_statement_list_fits_in_line_number_section_complaint (); |
debd256d JB |
20477 | return 0; |
20478 | } | |
20479 | lh->statement_program_end = line_ptr + lh->total_length; | |
20480 | lh->version = read_2_bytes (abfd, line_ptr); | |
20481 | line_ptr += 2; | |
43988095 | 20482 | if (lh->version > 5) |
cd366ee8 DE |
20483 | { |
20484 | /* This is a version we don't understand. The format could have | |
20485 | changed in ways we don't handle properly so just punt. */ | |
b98664d3 | 20486 | complaint (_("unsupported version in .debug_line section")); |
cd366ee8 DE |
20487 | return NULL; |
20488 | } | |
43988095 JK |
20489 | if (lh->version >= 5) |
20490 | { | |
20491 | gdb_byte segment_selector_size; | |
20492 | ||
20493 | /* Skip address size. */ | |
20494 | read_1_byte (abfd, line_ptr); | |
20495 | line_ptr += 1; | |
20496 | ||
20497 | segment_selector_size = read_1_byte (abfd, line_ptr); | |
20498 | line_ptr += 1; | |
20499 | if (segment_selector_size != 0) | |
20500 | { | |
b98664d3 | 20501 | complaint (_("unsupported segment selector size %u " |
43988095 JK |
20502 | "in .debug_line section"), |
20503 | segment_selector_size); | |
20504 | return NULL; | |
20505 | } | |
20506 | } | |
c764a876 DE |
20507 | lh->header_length = read_offset_1 (abfd, line_ptr, offset_size); |
20508 | line_ptr += offset_size; | |
debd256d JB |
20509 | lh->minimum_instruction_length = read_1_byte (abfd, line_ptr); |
20510 | line_ptr += 1; | |
2dc7f7b3 TT |
20511 | if (lh->version >= 4) |
20512 | { | |
20513 | lh->maximum_ops_per_instruction = read_1_byte (abfd, line_ptr); | |
20514 | line_ptr += 1; | |
20515 | } | |
20516 | else | |
20517 | lh->maximum_ops_per_instruction = 1; | |
20518 | ||
20519 | if (lh->maximum_ops_per_instruction == 0) | |
20520 | { | |
20521 | lh->maximum_ops_per_instruction = 1; | |
b98664d3 | 20522 | complaint (_("invalid maximum_ops_per_instruction " |
3e43a32a | 20523 | "in `.debug_line' section")); |
2dc7f7b3 TT |
20524 | } |
20525 | ||
debd256d JB |
20526 | lh->default_is_stmt = read_1_byte (abfd, line_ptr); |
20527 | line_ptr += 1; | |
20528 | lh->line_base = read_1_signed_byte (abfd, line_ptr); | |
20529 | line_ptr += 1; | |
20530 | lh->line_range = read_1_byte (abfd, line_ptr); | |
20531 | line_ptr += 1; | |
20532 | lh->opcode_base = read_1_byte (abfd, line_ptr); | |
20533 | line_ptr += 1; | |
fff8551c | 20534 | lh->standard_opcode_lengths.reset (new unsigned char[lh->opcode_base]); |
debd256d JB |
20535 | |
20536 | lh->standard_opcode_lengths[0] = 1; /* This should never be used anyway. */ | |
20537 | for (i = 1; i < lh->opcode_base; ++i) | |
20538 | { | |
20539 | lh->standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr); | |
20540 | line_ptr += 1; | |
20541 | } | |
20542 | ||
43988095 | 20543 | if (lh->version >= 5) |
debd256d | 20544 | { |
43988095 | 20545 | /* Read directory table. */ |
ed2dc618 SM |
20546 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20547 | &cu->header, | |
b926417a | 20548 | [] (struct line_header *header, const char *name, |
ecfb656c | 20549 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20550 | unsigned int length) |
20551 | { | |
b926417a | 20552 | header->add_include_dir (name); |
fff8551c | 20553 | }); |
debd256d | 20554 | |
43988095 | 20555 | /* Read file name table. */ |
ed2dc618 SM |
20556 | read_formatted_entries (dwarf2_per_objfile, abfd, &line_ptr, lh.get (), |
20557 | &cu->header, | |
b926417a | 20558 | [] (struct line_header *header, const char *name, |
ecfb656c | 20559 | dir_index d_index, unsigned int mod_time, |
fff8551c PA |
20560 | unsigned int length) |
20561 | { | |
b926417a | 20562 | header->add_file_name (name, d_index, mod_time, length); |
fff8551c | 20563 | }); |
43988095 JK |
20564 | } |
20565 | else | |
debd256d | 20566 | { |
43988095 JK |
20567 | /* Read directory table. */ |
20568 | while ((cur_dir = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20569 | { | |
20570 | line_ptr += bytes_read; | |
fff8551c | 20571 | lh->add_include_dir (cur_dir); |
43988095 | 20572 | } |
debd256d JB |
20573 | line_ptr += bytes_read; |
20574 | ||
43988095 JK |
20575 | /* Read file name table. */ |
20576 | while ((cur_file = read_direct_string (abfd, line_ptr, &bytes_read)) != NULL) | |
20577 | { | |
ecfb656c PA |
20578 | unsigned int mod_time, length; |
20579 | dir_index d_index; | |
43988095 JK |
20580 | |
20581 | line_ptr += bytes_read; | |
ecfb656c | 20582 | d_index = (dir_index) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
43988095 JK |
20583 | line_ptr += bytes_read; |
20584 | mod_time = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20585 | line_ptr += bytes_read; | |
20586 | length = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
20587 | line_ptr += bytes_read; | |
20588 | ||
ecfb656c | 20589 | lh->add_file_name (cur_file, d_index, mod_time, length); |
43988095 JK |
20590 | } |
20591 | line_ptr += bytes_read; | |
debd256d | 20592 | } |
6e70227d | 20593 | lh->statement_program_start = line_ptr; |
debd256d | 20594 | |
3019eac3 | 20595 | if (line_ptr > (section->buffer + section->size)) |
b98664d3 | 20596 | complaint (_("line number info header doesn't " |
3e43a32a | 20597 | "fit in `.debug_line' section")); |
debd256d | 20598 | |
debd256d JB |
20599 | return lh; |
20600 | } | |
c906108c | 20601 | |
c6da4cef DE |
20602 | /* Subroutine of dwarf_decode_lines to simplify it. |
20603 | Return the file name of the psymtab for included file FILE_INDEX | |
20604 | in line header LH of PST. | |
20605 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
c89b44cd TT |
20606 | If space for the result is malloc'd, *NAME_HOLDER will be set. |
20607 | Returns NULL if FILE_INDEX should be ignored, i.e., it is pst->filename. */ | |
c6da4cef | 20608 | |
d521ce57 | 20609 | static const char * |
c6da4cef DE |
20610 | psymtab_include_file_name (const struct line_header *lh, int file_index, |
20611 | const struct partial_symtab *pst, | |
c89b44cd TT |
20612 | const char *comp_dir, |
20613 | gdb::unique_xmalloc_ptr<char> *name_holder) | |
c6da4cef | 20614 | { |
8c43009f | 20615 | const file_entry &fe = lh->file_names[file_index]; |
d521ce57 TT |
20616 | const char *include_name = fe.name; |
20617 | const char *include_name_to_compare = include_name; | |
72b9f47f | 20618 | const char *pst_filename; |
c6da4cef DE |
20619 | int file_is_pst; |
20620 | ||
8c43009f | 20621 | const char *dir_name = fe.include_dir (lh); |
c6da4cef | 20622 | |
c89b44cd | 20623 | gdb::unique_xmalloc_ptr<char> hold_compare; |
c6da4cef DE |
20624 | if (!IS_ABSOLUTE_PATH (include_name) |
20625 | && (dir_name != NULL || comp_dir != NULL)) | |
20626 | { | |
20627 | /* Avoid creating a duplicate psymtab for PST. | |
20628 | We do this by comparing INCLUDE_NAME and PST_FILENAME. | |
20629 | Before we do the comparison, however, we need to account | |
20630 | for DIR_NAME and COMP_DIR. | |
20631 | First prepend dir_name (if non-NULL). If we still don't | |
20632 | have an absolute path prepend comp_dir (if non-NULL). | |
20633 | However, the directory we record in the include-file's | |
20634 | psymtab does not contain COMP_DIR (to match the | |
20635 | corresponding symtab(s)). | |
20636 | ||
20637 | Example: | |
20638 | ||
20639 | bash$ cd /tmp | |
20640 | bash$ gcc -g ./hello.c | |
20641 | include_name = "hello.c" | |
20642 | dir_name = "." | |
20643 | DW_AT_comp_dir = comp_dir = "/tmp" | |
5f52445b YQ |
20644 | DW_AT_name = "./hello.c" |
20645 | ||
20646 | */ | |
c6da4cef DE |
20647 | |
20648 | if (dir_name != NULL) | |
20649 | { | |
c89b44cd TT |
20650 | name_holder->reset (concat (dir_name, SLASH_STRING, |
20651 | include_name, (char *) NULL)); | |
20652 | include_name = name_holder->get (); | |
c6da4cef | 20653 | include_name_to_compare = include_name; |
c6da4cef DE |
20654 | } |
20655 | if (!IS_ABSOLUTE_PATH (include_name) && comp_dir != NULL) | |
20656 | { | |
c89b44cd TT |
20657 | hold_compare.reset (concat (comp_dir, SLASH_STRING, |
20658 | include_name, (char *) NULL)); | |
20659 | include_name_to_compare = hold_compare.get (); | |
c6da4cef DE |
20660 | } |
20661 | } | |
20662 | ||
20663 | pst_filename = pst->filename; | |
c89b44cd | 20664 | gdb::unique_xmalloc_ptr<char> copied_name; |
c6da4cef DE |
20665 | if (!IS_ABSOLUTE_PATH (pst_filename) && pst->dirname != NULL) |
20666 | { | |
c89b44cd TT |
20667 | copied_name.reset (concat (pst->dirname, SLASH_STRING, |
20668 | pst_filename, (char *) NULL)); | |
20669 | pst_filename = copied_name.get (); | |
c6da4cef DE |
20670 | } |
20671 | ||
1e3fad37 | 20672 | file_is_pst = FILENAME_CMP (include_name_to_compare, pst_filename) == 0; |
c6da4cef | 20673 | |
c6da4cef DE |
20674 | if (file_is_pst) |
20675 | return NULL; | |
20676 | return include_name; | |
20677 | } | |
20678 | ||
d9b3de22 DE |
20679 | /* State machine to track the state of the line number program. */ |
20680 | ||
6f77053d | 20681 | class lnp_state_machine |
d9b3de22 | 20682 | { |
6f77053d PA |
20683 | public: |
20684 | /* Initialize a machine state for the start of a line number | |
20685 | program. */ | |
804d2729 TT |
20686 | lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, line_header *lh, |
20687 | bool record_lines_p); | |
6f77053d | 20688 | |
8c43009f PA |
20689 | file_entry *current_file () |
20690 | { | |
20691 | /* lh->file_names is 0-based, but the file name numbers in the | |
20692 | statement program are 1-based. */ | |
6f77053d PA |
20693 | return m_line_header->file_name_at (m_file); |
20694 | } | |
20695 | ||
20696 | /* Record the line in the state machine. END_SEQUENCE is true if | |
20697 | we're processing the end of a sequence. */ | |
20698 | void record_line (bool end_sequence); | |
20699 | ||
7ab6656f OJ |
20700 | /* Check ADDRESS is zero and less than UNRELOCATED_LOWPC and if true |
20701 | nop-out rest of the lines in this sequence. */ | |
6f77053d PA |
20702 | void check_line_address (struct dwarf2_cu *cu, |
20703 | const gdb_byte *line_ptr, | |
7ab6656f | 20704 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address); |
6f77053d PA |
20705 | |
20706 | void handle_set_discriminator (unsigned int discriminator) | |
20707 | { | |
20708 | m_discriminator = discriminator; | |
20709 | m_line_has_non_zero_discriminator |= discriminator != 0; | |
20710 | } | |
20711 | ||
20712 | /* Handle DW_LNE_set_address. */ | |
20713 | void handle_set_address (CORE_ADDR baseaddr, CORE_ADDR address) | |
20714 | { | |
20715 | m_op_index = 0; | |
20716 | address += baseaddr; | |
20717 | m_address = gdbarch_adjust_dwarf2_line (m_gdbarch, address, false); | |
20718 | } | |
20719 | ||
20720 | /* Handle DW_LNS_advance_pc. */ | |
20721 | void handle_advance_pc (CORE_ADDR adjust); | |
20722 | ||
20723 | /* Handle a special opcode. */ | |
20724 | void handle_special_opcode (unsigned char op_code); | |
20725 | ||
20726 | /* Handle DW_LNS_advance_line. */ | |
20727 | void handle_advance_line (int line_delta) | |
20728 | { | |
20729 | advance_line (line_delta); | |
20730 | } | |
20731 | ||
20732 | /* Handle DW_LNS_set_file. */ | |
20733 | void handle_set_file (file_name_index file); | |
20734 | ||
20735 | /* Handle DW_LNS_negate_stmt. */ | |
20736 | void handle_negate_stmt () | |
20737 | { | |
20738 | m_is_stmt = !m_is_stmt; | |
20739 | } | |
20740 | ||
20741 | /* Handle DW_LNS_const_add_pc. */ | |
20742 | void handle_const_add_pc (); | |
20743 | ||
20744 | /* Handle DW_LNS_fixed_advance_pc. */ | |
20745 | void handle_fixed_advance_pc (CORE_ADDR addr_adj) | |
20746 | { | |
20747 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20748 | m_op_index = 0; | |
20749 | } | |
20750 | ||
20751 | /* Handle DW_LNS_copy. */ | |
20752 | void handle_copy () | |
20753 | { | |
20754 | record_line (false); | |
20755 | m_discriminator = 0; | |
20756 | } | |
20757 | ||
20758 | /* Handle DW_LNE_end_sequence. */ | |
20759 | void handle_end_sequence () | |
20760 | { | |
804d2729 | 20761 | m_currently_recording_lines = true; |
6f77053d PA |
20762 | } |
20763 | ||
20764 | private: | |
20765 | /* Advance the line by LINE_DELTA. */ | |
20766 | void advance_line (int line_delta) | |
20767 | { | |
20768 | m_line += line_delta; | |
20769 | ||
20770 | if (line_delta != 0) | |
20771 | m_line_has_non_zero_discriminator = m_discriminator != 0; | |
8c43009f PA |
20772 | } |
20773 | ||
804d2729 TT |
20774 | struct dwarf2_cu *m_cu; |
20775 | ||
6f77053d PA |
20776 | gdbarch *m_gdbarch; |
20777 | ||
20778 | /* True if we're recording lines. | |
20779 | Otherwise we're building partial symtabs and are just interested in | |
20780 | finding include files mentioned by the line number program. */ | |
20781 | bool m_record_lines_p; | |
20782 | ||
8c43009f | 20783 | /* The line number header. */ |
6f77053d | 20784 | line_header *m_line_header; |
8c43009f | 20785 | |
6f77053d PA |
20786 | /* These are part of the standard DWARF line number state machine, |
20787 | and initialized according to the DWARF spec. */ | |
d9b3de22 | 20788 | |
6f77053d | 20789 | unsigned char m_op_index = 0; |
8c43009f | 20790 | /* The line table index (1-based) of the current file. */ |
6f77053d PA |
20791 | file_name_index m_file = (file_name_index) 1; |
20792 | unsigned int m_line = 1; | |
20793 | ||
20794 | /* These are initialized in the constructor. */ | |
20795 | ||
20796 | CORE_ADDR m_address; | |
20797 | bool m_is_stmt; | |
20798 | unsigned int m_discriminator; | |
d9b3de22 DE |
20799 | |
20800 | /* Additional bits of state we need to track. */ | |
20801 | ||
20802 | /* The last file that we called dwarf2_start_subfile for. | |
20803 | This is only used for TLLs. */ | |
6f77053d | 20804 | unsigned int m_last_file = 0; |
d9b3de22 | 20805 | /* The last file a line number was recorded for. */ |
6f77053d | 20806 | struct subfile *m_last_subfile = NULL; |
d9b3de22 | 20807 | |
804d2729 TT |
20808 | /* When true, record the lines we decode. */ |
20809 | bool m_currently_recording_lines = false; | |
d9b3de22 DE |
20810 | |
20811 | /* The last line number that was recorded, used to coalesce | |
20812 | consecutive entries for the same line. This can happen, for | |
20813 | example, when discriminators are present. PR 17276. */ | |
6f77053d PA |
20814 | unsigned int m_last_line = 0; |
20815 | bool m_line_has_non_zero_discriminator = false; | |
8c43009f | 20816 | }; |
d9b3de22 | 20817 | |
6f77053d PA |
20818 | void |
20819 | lnp_state_machine::handle_advance_pc (CORE_ADDR adjust) | |
20820 | { | |
20821 | CORE_ADDR addr_adj = (((m_op_index + adjust) | |
20822 | / m_line_header->maximum_ops_per_instruction) | |
20823 | * m_line_header->minimum_instruction_length); | |
20824 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20825 | m_op_index = ((m_op_index + adjust) | |
20826 | % m_line_header->maximum_ops_per_instruction); | |
20827 | } | |
d9b3de22 | 20828 | |
6f77053d PA |
20829 | void |
20830 | lnp_state_machine::handle_special_opcode (unsigned char op_code) | |
d9b3de22 | 20831 | { |
6f77053d PA |
20832 | unsigned char adj_opcode = op_code - m_line_header->opcode_base; |
20833 | CORE_ADDR addr_adj = (((m_op_index | |
20834 | + (adj_opcode / m_line_header->line_range)) | |
20835 | / m_line_header->maximum_ops_per_instruction) | |
20836 | * m_line_header->minimum_instruction_length); | |
20837 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20838 | m_op_index = ((m_op_index + (adj_opcode / m_line_header->line_range)) | |
20839 | % m_line_header->maximum_ops_per_instruction); | |
d9b3de22 | 20840 | |
6f77053d PA |
20841 | int line_delta = (m_line_header->line_base |
20842 | + (adj_opcode % m_line_header->line_range)); | |
20843 | advance_line (line_delta); | |
20844 | record_line (false); | |
20845 | m_discriminator = 0; | |
20846 | } | |
d9b3de22 | 20847 | |
6f77053d PA |
20848 | void |
20849 | lnp_state_machine::handle_set_file (file_name_index file) | |
20850 | { | |
20851 | m_file = file; | |
20852 | ||
20853 | const file_entry *fe = current_file (); | |
20854 | if (fe == NULL) | |
20855 | dwarf2_debug_line_missing_file_complaint (); | |
20856 | else if (m_record_lines_p) | |
20857 | { | |
20858 | const char *dir = fe->include_dir (m_line_header); | |
20859 | ||
c24bdb02 | 20860 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 20861 | m_line_has_non_zero_discriminator = m_discriminator != 0; |
804d2729 | 20862 | dwarf2_start_subfile (m_cu, fe->name, dir); |
6f77053d PA |
20863 | } |
20864 | } | |
20865 | ||
20866 | void | |
20867 | lnp_state_machine::handle_const_add_pc () | |
20868 | { | |
20869 | CORE_ADDR adjust | |
20870 | = (255 - m_line_header->opcode_base) / m_line_header->line_range; | |
20871 | ||
20872 | CORE_ADDR addr_adj | |
20873 | = (((m_op_index + adjust) | |
20874 | / m_line_header->maximum_ops_per_instruction) | |
20875 | * m_line_header->minimum_instruction_length); | |
20876 | ||
20877 | m_address += gdbarch_adjust_dwarf2_line (m_gdbarch, addr_adj, true); | |
20878 | m_op_index = ((m_op_index + adjust) | |
20879 | % m_line_header->maximum_ops_per_instruction); | |
20880 | } | |
d9b3de22 | 20881 | |
a05a36a5 DE |
20882 | /* Return non-zero if we should add LINE to the line number table. |
20883 | LINE is the line to add, LAST_LINE is the last line that was added, | |
20884 | LAST_SUBFILE is the subfile for LAST_LINE. | |
20885 | LINE_HAS_NON_ZERO_DISCRIMINATOR is non-zero if LINE has ever | |
20886 | had a non-zero discriminator. | |
20887 | ||
20888 | We have to be careful in the presence of discriminators. | |
20889 | E.g., for this line: | |
20890 | ||
20891 | for (i = 0; i < 100000; i++); | |
20892 | ||
20893 | clang can emit four line number entries for that one line, | |
20894 | each with a different discriminator. | |
20895 | See gdb.dwarf2/dw2-single-line-discriminators.exp for an example. | |
20896 | ||
20897 | However, we want gdb to coalesce all four entries into one. | |
20898 | Otherwise the user could stepi into the middle of the line and | |
20899 | gdb would get confused about whether the pc really was in the | |
20900 | middle of the line. | |
20901 | ||
20902 | Things are further complicated by the fact that two consecutive | |
20903 | line number entries for the same line is a heuristic used by gcc | |
20904 | to denote the end of the prologue. So we can't just discard duplicate | |
20905 | entries, we have to be selective about it. The heuristic we use is | |
20906 | that we only collapse consecutive entries for the same line if at least | |
20907 | one of those entries has a non-zero discriminator. PR 17276. | |
20908 | ||
20909 | Note: Addresses in the line number state machine can never go backwards | |
20910 | within one sequence, thus this coalescing is ok. */ | |
20911 | ||
20912 | static int | |
804d2729 TT |
20913 | dwarf_record_line_p (struct dwarf2_cu *cu, |
20914 | unsigned int line, unsigned int last_line, | |
a05a36a5 DE |
20915 | int line_has_non_zero_discriminator, |
20916 | struct subfile *last_subfile) | |
20917 | { | |
c24bdb02 | 20918 | if (cu->get_builder ()->get_current_subfile () != last_subfile) |
a05a36a5 DE |
20919 | return 1; |
20920 | if (line != last_line) | |
20921 | return 1; | |
20922 | /* Same line for the same file that we've seen already. | |
20923 | As a last check, for pr 17276, only record the line if the line | |
20924 | has never had a non-zero discriminator. */ | |
20925 | if (!line_has_non_zero_discriminator) | |
20926 | return 1; | |
20927 | return 0; | |
20928 | } | |
20929 | ||
804d2729 TT |
20930 | /* Use the CU's builder to record line number LINE beginning at |
20931 | address ADDRESS in the line table of subfile SUBFILE. */ | |
252a6764 DE |
20932 | |
20933 | static void | |
d9b3de22 DE |
20934 | dwarf_record_line_1 (struct gdbarch *gdbarch, struct subfile *subfile, |
20935 | unsigned int line, CORE_ADDR address, | |
804d2729 | 20936 | struct dwarf2_cu *cu) |
252a6764 DE |
20937 | { |
20938 | CORE_ADDR addr = gdbarch_addr_bits_remove (gdbarch, address); | |
20939 | ||
27e0867f DE |
20940 | if (dwarf_line_debug) |
20941 | { | |
20942 | fprintf_unfiltered (gdb_stdlog, | |
20943 | "Recording line %u, file %s, address %s\n", | |
20944 | line, lbasename (subfile->name), | |
20945 | paddress (gdbarch, address)); | |
20946 | } | |
20947 | ||
804d2729 | 20948 | if (cu != nullptr) |
c24bdb02 | 20949 | cu->get_builder ()->record_line (subfile, line, addr); |
252a6764 DE |
20950 | } |
20951 | ||
20952 | /* Subroutine of dwarf_decode_lines_1 to simplify it. | |
20953 | Mark the end of a set of line number records. | |
d9b3de22 | 20954 | The arguments are the same as for dwarf_record_line_1. |
252a6764 DE |
20955 | If SUBFILE is NULL the request is ignored. */ |
20956 | ||
20957 | static void | |
20958 | dwarf_finish_line (struct gdbarch *gdbarch, struct subfile *subfile, | |
804d2729 | 20959 | CORE_ADDR address, struct dwarf2_cu *cu) |
252a6764 | 20960 | { |
27e0867f DE |
20961 | if (subfile == NULL) |
20962 | return; | |
20963 | ||
20964 | if (dwarf_line_debug) | |
20965 | { | |
20966 | fprintf_unfiltered (gdb_stdlog, | |
20967 | "Finishing current line, file %s, address %s\n", | |
20968 | lbasename (subfile->name), | |
20969 | paddress (gdbarch, address)); | |
20970 | } | |
20971 | ||
804d2729 | 20972 | dwarf_record_line_1 (gdbarch, subfile, 0, address, cu); |
d9b3de22 DE |
20973 | } |
20974 | ||
6f77053d PA |
20975 | void |
20976 | lnp_state_machine::record_line (bool end_sequence) | |
d9b3de22 | 20977 | { |
d9b3de22 DE |
20978 | if (dwarf_line_debug) |
20979 | { | |
20980 | fprintf_unfiltered (gdb_stdlog, | |
20981 | "Processing actual line %u: file %u," | |
20982 | " address %s, is_stmt %u, discrim %u\n", | |
6f77053d PA |
20983 | m_line, to_underlying (m_file), |
20984 | paddress (m_gdbarch, m_address), | |
20985 | m_is_stmt, m_discriminator); | |
d9b3de22 DE |
20986 | } |
20987 | ||
6f77053d | 20988 | file_entry *fe = current_file (); |
8c43009f PA |
20989 | |
20990 | if (fe == NULL) | |
d9b3de22 DE |
20991 | dwarf2_debug_line_missing_file_complaint (); |
20992 | /* For now we ignore lines not starting on an instruction boundary. | |
20993 | But not when processing end_sequence for compatibility with the | |
20994 | previous version of the code. */ | |
6f77053d | 20995 | else if (m_op_index == 0 || end_sequence) |
d9b3de22 | 20996 | { |
8c43009f | 20997 | fe->included_p = 1; |
c258c396 | 20998 | if (m_record_lines_p && (producer_is_codewarrior (m_cu) || m_is_stmt)) |
d9b3de22 | 20999 | { |
c24bdb02 | 21000 | if (m_last_subfile != m_cu->get_builder ()->get_current_subfile () |
804d2729 | 21001 | || end_sequence) |
d9b3de22 | 21002 | { |
804d2729 TT |
21003 | dwarf_finish_line (m_gdbarch, m_last_subfile, m_address, |
21004 | m_currently_recording_lines ? m_cu : nullptr); | |
d9b3de22 DE |
21005 | } |
21006 | ||
21007 | if (!end_sequence) | |
21008 | { | |
804d2729 | 21009 | if (dwarf_record_line_p (m_cu, m_line, m_last_line, |
6f77053d PA |
21010 | m_line_has_non_zero_discriminator, |
21011 | m_last_subfile)) | |
d9b3de22 | 21012 | { |
c24bdb02 | 21013 | buildsym_compunit *builder = m_cu->get_builder (); |
804d2729 | 21014 | dwarf_record_line_1 (m_gdbarch, |
c24bdb02 | 21015 | builder->get_current_subfile (), |
6f77053d | 21016 | m_line, m_address, |
804d2729 | 21017 | m_currently_recording_lines ? m_cu : nullptr); |
d9b3de22 | 21018 | } |
c24bdb02 | 21019 | m_last_subfile = m_cu->get_builder ()->get_current_subfile (); |
6f77053d | 21020 | m_last_line = m_line; |
d9b3de22 DE |
21021 | } |
21022 | } | |
21023 | } | |
21024 | } | |
21025 | ||
804d2729 TT |
21026 | lnp_state_machine::lnp_state_machine (struct dwarf2_cu *cu, gdbarch *arch, |
21027 | line_header *lh, bool record_lines_p) | |
d9b3de22 | 21028 | { |
804d2729 | 21029 | m_cu = cu; |
6f77053d PA |
21030 | m_gdbarch = arch; |
21031 | m_record_lines_p = record_lines_p; | |
21032 | m_line_header = lh; | |
d9b3de22 | 21033 | |
804d2729 | 21034 | m_currently_recording_lines = true; |
d9b3de22 | 21035 | |
d9b3de22 DE |
21036 | /* Call `gdbarch_adjust_dwarf2_line' on the initial 0 address as if there |
21037 | was a line entry for it so that the backend has a chance to adjust it | |
21038 | and also record it in case it needs it. This is currently used by MIPS | |
21039 | code, cf. `mips_adjust_dwarf2_line'. */ | |
6f77053d PA |
21040 | m_address = gdbarch_adjust_dwarf2_line (arch, 0, 0); |
21041 | m_is_stmt = lh->default_is_stmt; | |
21042 | m_discriminator = 0; | |
252a6764 DE |
21043 | } |
21044 | ||
6f77053d PA |
21045 | void |
21046 | lnp_state_machine::check_line_address (struct dwarf2_cu *cu, | |
21047 | const gdb_byte *line_ptr, | |
7ab6656f | 21048 | CORE_ADDR unrelocated_lowpc, CORE_ADDR address) |
924c2928 | 21049 | { |
7ab6656f OJ |
21050 | /* If ADDRESS < UNRELOCATED_LOWPC then it's not a usable value, it's outside |
21051 | the pc range of the CU. However, we restrict the test to only ADDRESS | |
21052 | values of zero to preserve GDB's previous behaviour which is to handle | |
21053 | the specific case of a function being GC'd by the linker. */ | |
924c2928 | 21054 | |
7ab6656f | 21055 | if (address == 0 && address < unrelocated_lowpc) |
924c2928 DE |
21056 | { |
21057 | /* This line table is for a function which has been | |
21058 | GCd by the linker. Ignore it. PR gdb/12528 */ | |
21059 | ||
518817b3 | 21060 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
924c2928 DE |
21061 | long line_offset = line_ptr - get_debug_line_section (cu)->buffer; |
21062 | ||
b98664d3 | 21063 | complaint (_(".debug_line address at offset 0x%lx is 0 [in module %s]"), |
924c2928 | 21064 | line_offset, objfile_name (objfile)); |
804d2729 TT |
21065 | m_currently_recording_lines = false; |
21066 | /* Note: m_currently_recording_lines is left as false until we see | |
21067 | DW_LNE_end_sequence. */ | |
924c2928 DE |
21068 | } |
21069 | } | |
21070 | ||
f3f5162e | 21071 | /* Subroutine of dwarf_decode_lines to simplify it. |
d9b3de22 DE |
21072 | Process the line number information in LH. |
21073 | If DECODE_FOR_PST_P is non-zero, all we do is process the line number | |
21074 | program in order to set included_p for every referenced header. */ | |
debd256d | 21075 | |
c906108c | 21076 | static void |
43f3e411 DE |
21077 | dwarf_decode_lines_1 (struct line_header *lh, struct dwarf2_cu *cu, |
21078 | const int decode_for_pst_p, CORE_ADDR lowpc) | |
c906108c | 21079 | { |
d521ce57 TT |
21080 | const gdb_byte *line_ptr, *extended_end; |
21081 | const gdb_byte *line_end; | |
a8c50c1f | 21082 | unsigned int bytes_read, extended_len; |
699ca60a | 21083 | unsigned char op_code, extended_op; |
e142c38c | 21084 | CORE_ADDR baseaddr; |
518817b3 | 21085 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21086 | bfd *abfd = objfile->obfd; |
fbf65064 | 21087 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
6f77053d PA |
21088 | /* True if we're recording line info (as opposed to building partial |
21089 | symtabs and just interested in finding include files mentioned by | |
21090 | the line number program). */ | |
21091 | bool record_lines_p = !decode_for_pst_p; | |
e142c38c DJ |
21092 | |
21093 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21094 | |
debd256d JB |
21095 | line_ptr = lh->statement_program_start; |
21096 | line_end = lh->statement_program_end; | |
c906108c SS |
21097 | |
21098 | /* Read the statement sequences until there's nothing left. */ | |
21099 | while (line_ptr < line_end) | |
21100 | { | |
6f77053d PA |
21101 | /* The DWARF line number program state machine. Reset the state |
21102 | machine at the start of each sequence. */ | |
804d2729 | 21103 | lnp_state_machine state_machine (cu, gdbarch, lh, record_lines_p); |
6f77053d | 21104 | bool end_sequence = false; |
d9b3de22 | 21105 | |
8c43009f | 21106 | if (record_lines_p) |
c906108c | 21107 | { |
8c43009f PA |
21108 | /* Start a subfile for the current file of the state |
21109 | machine. */ | |
21110 | const file_entry *fe = state_machine.current_file (); | |
21111 | ||
21112 | if (fe != NULL) | |
804d2729 | 21113 | dwarf2_start_subfile (cu, fe->name, fe->include_dir (lh)); |
c906108c SS |
21114 | } |
21115 | ||
a738430d | 21116 | /* Decode the table. */ |
d9b3de22 | 21117 | while (line_ptr < line_end && !end_sequence) |
c906108c SS |
21118 | { |
21119 | op_code = read_1_byte (abfd, line_ptr); | |
21120 | line_ptr += 1; | |
9aa1fe7e | 21121 | |
debd256d | 21122 | if (op_code >= lh->opcode_base) |
6e70227d | 21123 | { |
8e07a239 | 21124 | /* Special opcode. */ |
6f77053d | 21125 | state_machine.handle_special_opcode (op_code); |
9aa1fe7e GK |
21126 | } |
21127 | else switch (op_code) | |
c906108c SS |
21128 | { |
21129 | case DW_LNS_extended_op: | |
3e43a32a MS |
21130 | extended_len = read_unsigned_leb128 (abfd, line_ptr, |
21131 | &bytes_read); | |
473b7be6 | 21132 | line_ptr += bytes_read; |
a8c50c1f | 21133 | extended_end = line_ptr + extended_len; |
c906108c SS |
21134 | extended_op = read_1_byte (abfd, line_ptr); |
21135 | line_ptr += 1; | |
21136 | switch (extended_op) | |
21137 | { | |
21138 | case DW_LNE_end_sequence: | |
6f77053d PA |
21139 | state_machine.handle_end_sequence (); |
21140 | end_sequence = true; | |
c906108c SS |
21141 | break; |
21142 | case DW_LNE_set_address: | |
d9b3de22 DE |
21143 | { |
21144 | CORE_ADDR address | |
21145 | = read_address (abfd, line_ptr, cu, &bytes_read); | |
d9b3de22 | 21146 | line_ptr += bytes_read; |
6f77053d PA |
21147 | |
21148 | state_machine.check_line_address (cu, line_ptr, | |
7ab6656f | 21149 | lowpc - baseaddr, address); |
6f77053d | 21150 | state_machine.handle_set_address (baseaddr, address); |
d9b3de22 | 21151 | } |
c906108c SS |
21152 | break; |
21153 | case DW_LNE_define_file: | |
debd256d | 21154 | { |
d521ce57 | 21155 | const char *cur_file; |
ecfb656c PA |
21156 | unsigned int mod_time, length; |
21157 | dir_index dindex; | |
6e70227d | 21158 | |
3e43a32a MS |
21159 | cur_file = read_direct_string (abfd, line_ptr, |
21160 | &bytes_read); | |
debd256d | 21161 | line_ptr += bytes_read; |
ecfb656c | 21162 | dindex = (dir_index) |
debd256d JB |
21163 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
21164 | line_ptr += bytes_read; | |
21165 | mod_time = | |
21166 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21167 | line_ptr += bytes_read; | |
21168 | length = | |
21169 | read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21170 | line_ptr += bytes_read; | |
ecfb656c | 21171 | lh->add_file_name (cur_file, dindex, mod_time, length); |
debd256d | 21172 | } |
c906108c | 21173 | break; |
d0c6ba3d | 21174 | case DW_LNE_set_discriminator: |
6f77053d PA |
21175 | { |
21176 | /* The discriminator is not interesting to the | |
21177 | debugger; just ignore it. We still need to | |
21178 | check its value though: | |
21179 | if there are consecutive entries for the same | |
21180 | (non-prologue) line we want to coalesce them. | |
21181 | PR 17276. */ | |
21182 | unsigned int discr | |
21183 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21184 | line_ptr += bytes_read; | |
21185 | ||
21186 | state_machine.handle_set_discriminator (discr); | |
21187 | } | |
d0c6ba3d | 21188 | break; |
c906108c | 21189 | default: |
b98664d3 | 21190 | complaint (_("mangled .debug_line section")); |
debd256d | 21191 | return; |
c906108c | 21192 | } |
a8c50c1f DJ |
21193 | /* Make sure that we parsed the extended op correctly. If e.g. |
21194 | we expected a different address size than the producer used, | |
21195 | we may have read the wrong number of bytes. */ | |
21196 | if (line_ptr != extended_end) | |
21197 | { | |
b98664d3 | 21198 | complaint (_("mangled .debug_line section")); |
a8c50c1f DJ |
21199 | return; |
21200 | } | |
c906108c SS |
21201 | break; |
21202 | case DW_LNS_copy: | |
6f77053d | 21203 | state_machine.handle_copy (); |
c906108c SS |
21204 | break; |
21205 | case DW_LNS_advance_pc: | |
2dc7f7b3 TT |
21206 | { |
21207 | CORE_ADDR adjust | |
21208 | = read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
2dc7f7b3 | 21209 | line_ptr += bytes_read; |
6f77053d PA |
21210 | |
21211 | state_machine.handle_advance_pc (adjust); | |
2dc7f7b3 | 21212 | } |
c906108c SS |
21213 | break; |
21214 | case DW_LNS_advance_line: | |
a05a36a5 DE |
21215 | { |
21216 | int line_delta | |
21217 | = read_signed_leb128 (abfd, line_ptr, &bytes_read); | |
a05a36a5 | 21218 | line_ptr += bytes_read; |
6f77053d PA |
21219 | |
21220 | state_machine.handle_advance_line (line_delta); | |
a05a36a5 | 21221 | } |
c906108c SS |
21222 | break; |
21223 | case DW_LNS_set_file: | |
d9b3de22 | 21224 | { |
6f77053d | 21225 | file_name_index file |
ecfb656c PA |
21226 | = (file_name_index) read_unsigned_leb128 (abfd, line_ptr, |
21227 | &bytes_read); | |
d9b3de22 | 21228 | line_ptr += bytes_read; |
8c43009f | 21229 | |
6f77053d | 21230 | state_machine.handle_set_file (file); |
d9b3de22 | 21231 | } |
c906108c SS |
21232 | break; |
21233 | case DW_LNS_set_column: | |
0ad93d4f | 21234 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); |
c906108c SS |
21235 | line_ptr += bytes_read; |
21236 | break; | |
21237 | case DW_LNS_negate_stmt: | |
6f77053d | 21238 | state_machine.handle_negate_stmt (); |
c906108c SS |
21239 | break; |
21240 | case DW_LNS_set_basic_block: | |
c906108c | 21241 | break; |
c2c6d25f JM |
21242 | /* Add to the address register of the state machine the |
21243 | address increment value corresponding to special opcode | |
a738430d MK |
21244 | 255. I.e., this value is scaled by the minimum |
21245 | instruction length since special opcode 255 would have | |
b021a221 | 21246 | scaled the increment. */ |
c906108c | 21247 | case DW_LNS_const_add_pc: |
6f77053d | 21248 | state_machine.handle_const_add_pc (); |
c906108c SS |
21249 | break; |
21250 | case DW_LNS_fixed_advance_pc: | |
3e29f34a | 21251 | { |
6f77053d | 21252 | CORE_ADDR addr_adj = read_2_bytes (abfd, line_ptr); |
3e29f34a | 21253 | line_ptr += 2; |
6f77053d PA |
21254 | |
21255 | state_machine.handle_fixed_advance_pc (addr_adj); | |
3e29f34a | 21256 | } |
c906108c | 21257 | break; |
9aa1fe7e | 21258 | default: |
a738430d MK |
21259 | { |
21260 | /* Unknown standard opcode, ignore it. */ | |
9aa1fe7e | 21261 | int i; |
a738430d | 21262 | |
debd256d | 21263 | for (i = 0; i < lh->standard_opcode_lengths[op_code]; i++) |
9aa1fe7e GK |
21264 | { |
21265 | (void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read); | |
21266 | line_ptr += bytes_read; | |
21267 | } | |
21268 | } | |
c906108c SS |
21269 | } |
21270 | } | |
d9b3de22 DE |
21271 | |
21272 | if (!end_sequence) | |
21273 | dwarf2_debug_line_missing_end_sequence_complaint (); | |
21274 | ||
21275 | /* We got a DW_LNE_end_sequence (or we ran off the end of the buffer, | |
21276 | in which case we still finish recording the last line). */ | |
6f77053d | 21277 | state_machine.record_line (true); |
c906108c | 21278 | } |
f3f5162e DE |
21279 | } |
21280 | ||
21281 | /* Decode the Line Number Program (LNP) for the given line_header | |
21282 | structure and CU. The actual information extracted and the type | |
21283 | of structures created from the LNP depends on the value of PST. | |
21284 | ||
21285 | 1. If PST is NULL, then this procedure uses the data from the program | |
21286 | to create all necessary symbol tables, and their linetables. | |
21287 | ||
21288 | 2. If PST is not NULL, this procedure reads the program to determine | |
21289 | the list of files included by the unit represented by PST, and | |
21290 | builds all the associated partial symbol tables. | |
21291 | ||
21292 | COMP_DIR is the compilation directory (DW_AT_comp_dir) or NULL if unknown. | |
21293 | It is used for relative paths in the line table. | |
21294 | NOTE: When processing partial symtabs (pst != NULL), | |
21295 | comp_dir == pst->dirname. | |
21296 | ||
21297 | NOTE: It is important that psymtabs have the same file name (via strcmp) | |
21298 | as the corresponding symtab. Since COMP_DIR is not used in the name of the | |
21299 | symtab we don't use it in the name of the psymtabs we create. | |
21300 | E.g. expand_line_sal requires this when finding psymtabs to expand. | |
c3b7b696 YQ |
21301 | A good testcase for this is mb-inline.exp. |
21302 | ||
527f3840 JK |
21303 | LOWPC is the lowest address in CU (or 0 if not known). |
21304 | ||
21305 | Boolean DECODE_MAPPING specifies we need to fully decode .debug_line | |
21306 | for its PC<->lines mapping information. Otherwise only the filename | |
21307 | table is read in. */ | |
f3f5162e DE |
21308 | |
21309 | static void | |
21310 | dwarf_decode_lines (struct line_header *lh, const char *comp_dir, | |
c3b7b696 | 21311 | struct dwarf2_cu *cu, struct partial_symtab *pst, |
527f3840 | 21312 | CORE_ADDR lowpc, int decode_mapping) |
f3f5162e | 21313 | { |
518817b3 | 21314 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
f3f5162e | 21315 | const int decode_for_pst_p = (pst != NULL); |
f3f5162e | 21316 | |
527f3840 JK |
21317 | if (decode_mapping) |
21318 | dwarf_decode_lines_1 (lh, cu, decode_for_pst_p, lowpc); | |
aaa75496 JB |
21319 | |
21320 | if (decode_for_pst_p) | |
21321 | { | |
21322 | int file_index; | |
21323 | ||
21324 | /* Now that we're done scanning the Line Header Program, we can | |
21325 | create the psymtab of each included file. */ | |
fff8551c | 21326 | for (file_index = 0; file_index < lh->file_names.size (); file_index++) |
aaa75496 JB |
21327 | if (lh->file_names[file_index].included_p == 1) |
21328 | { | |
c89b44cd | 21329 | gdb::unique_xmalloc_ptr<char> name_holder; |
d521ce57 | 21330 | const char *include_name = |
c89b44cd TT |
21331 | psymtab_include_file_name (lh, file_index, pst, comp_dir, |
21332 | &name_holder); | |
c6da4cef | 21333 | if (include_name != NULL) |
aaa75496 JB |
21334 | dwarf2_create_include_psymtab (include_name, pst, objfile); |
21335 | } | |
21336 | } | |
cb1df416 DJ |
21337 | else |
21338 | { | |
21339 | /* Make sure a symtab is created for every file, even files | |
21340 | which contain only variables (i.e. no code with associated | |
21341 | line numbers). */ | |
c24bdb02 KS |
21342 | buildsym_compunit *builder = cu->get_builder (); |
21343 | struct compunit_symtab *cust = builder->get_compunit_symtab (); | |
cb1df416 | 21344 | int i; |
cb1df416 | 21345 | |
fff8551c | 21346 | for (i = 0; i < lh->file_names.size (); i++) |
cb1df416 | 21347 | { |
8c43009f | 21348 | file_entry &fe = lh->file_names[i]; |
9a619af0 | 21349 | |
804d2729 | 21350 | dwarf2_start_subfile (cu, fe.name, fe.include_dir (lh)); |
cb1df416 | 21351 | |
c24bdb02 | 21352 | if (builder->get_current_subfile ()->symtab == NULL) |
43f3e411 | 21353 | { |
c24bdb02 | 21354 | builder->get_current_subfile ()->symtab |
804d2729 | 21355 | = allocate_symtab (cust, |
c24bdb02 | 21356 | builder->get_current_subfile ()->name); |
43f3e411 | 21357 | } |
c24bdb02 | 21358 | fe.symtab = builder->get_current_subfile ()->symtab; |
cb1df416 DJ |
21359 | } |
21360 | } | |
c906108c SS |
21361 | } |
21362 | ||
21363 | /* Start a subfile for DWARF. FILENAME is the name of the file and | |
21364 | DIRNAME the name of the source directory which contains FILENAME | |
4d663531 | 21365 | or NULL if not known. |
c906108c SS |
21366 | This routine tries to keep line numbers from identical absolute and |
21367 | relative file names in a common subfile. | |
21368 | ||
21369 | Using the `list' example from the GDB testsuite, which resides in | |
21370 | /srcdir and compiling it with Irix6.2 cc in /compdir using a filename | |
21371 | of /srcdir/list0.c yields the following debugging information for list0.c: | |
21372 | ||
c5aa993b | 21373 | DW_AT_name: /srcdir/list0.c |
4d663531 | 21374 | DW_AT_comp_dir: /compdir |
357e46e7 | 21375 | files.files[0].name: list0.h |
c5aa993b | 21376 | files.files[0].dir: /srcdir |
357e46e7 | 21377 | files.files[1].name: list0.c |
c5aa993b | 21378 | files.files[1].dir: /srcdir |
c906108c SS |
21379 | |
21380 | The line number information for list0.c has to end up in a single | |
4f1520fb FR |
21381 | subfile, so that `break /srcdir/list0.c:1' works as expected. |
21382 | start_subfile will ensure that this happens provided that we pass the | |
21383 | concatenation of files.files[1].dir and files.files[1].name as the | |
21384 | subfile's name. */ | |
c906108c SS |
21385 | |
21386 | static void | |
804d2729 TT |
21387 | dwarf2_start_subfile (struct dwarf2_cu *cu, const char *filename, |
21388 | const char *dirname) | |
c906108c | 21389 | { |
d521ce57 | 21390 | char *copy = NULL; |
4f1520fb | 21391 | |
4d663531 | 21392 | /* In order not to lose the line information directory, |
4f1520fb FR |
21393 | we concatenate it to the filename when it makes sense. |
21394 | Note that the Dwarf3 standard says (speaking of filenames in line | |
21395 | information): ``The directory index is ignored for file names | |
21396 | that represent full path names''. Thus ignoring dirname in the | |
21397 | `else' branch below isn't an issue. */ | |
c906108c | 21398 | |
d5166ae1 | 21399 | if (!IS_ABSOLUTE_PATH (filename) && dirname != NULL) |
d521ce57 TT |
21400 | { |
21401 | copy = concat (dirname, SLASH_STRING, filename, (char *)NULL); | |
21402 | filename = copy; | |
21403 | } | |
c906108c | 21404 | |
c24bdb02 | 21405 | cu->get_builder ()->start_subfile (filename); |
4f1520fb | 21406 | |
d521ce57 TT |
21407 | if (copy != NULL) |
21408 | xfree (copy); | |
c906108c SS |
21409 | } |
21410 | ||
804d2729 TT |
21411 | /* Start a symtab for DWARF. NAME, COMP_DIR, LOW_PC are passed to the |
21412 | buildsym_compunit constructor. */ | |
f4dc4d17 | 21413 | |
c24bdb02 KS |
21414 | struct compunit_symtab * |
21415 | dwarf2_cu::start_symtab (const char *name, const char *comp_dir, | |
21416 | CORE_ADDR low_pc) | |
f4dc4d17 | 21417 | { |
c24bdb02 | 21418 | gdb_assert (m_builder == nullptr); |
43f3e411 | 21419 | |
c24bdb02 KS |
21420 | m_builder.reset (new struct buildsym_compunit |
21421 | (per_cu->dwarf2_per_objfile->objfile, | |
21422 | name, comp_dir, language, low_pc)); | |
93b8bea4 | 21423 | |
c24bdb02 | 21424 | list_in_scope = get_builder ()->get_file_symbols (); |
804d2729 | 21425 | |
c24bdb02 KS |
21426 | get_builder ()->record_debugformat ("DWARF 2"); |
21427 | get_builder ()->record_producer (producer); | |
f4dc4d17 | 21428 | |
c24bdb02 | 21429 | processing_has_namespace_info = false; |
43f3e411 | 21430 | |
c24bdb02 | 21431 | return get_builder ()->get_compunit_symtab (); |
f4dc4d17 DE |
21432 | } |
21433 | ||
4c2df51b DJ |
21434 | static void |
21435 | var_decode_location (struct attribute *attr, struct symbol *sym, | |
e7c27a73 | 21436 | struct dwarf2_cu *cu) |
4c2df51b | 21437 | { |
518817b3 | 21438 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e7c27a73 DJ |
21439 | struct comp_unit_head *cu_header = &cu->header; |
21440 | ||
4c2df51b DJ |
21441 | /* NOTE drow/2003-01-30: There used to be a comment and some special |
21442 | code here to turn a symbol with DW_AT_external and a | |
21443 | SYMBOL_VALUE_ADDRESS of 0 into a LOC_UNRESOLVED symbol. This was | |
21444 | necessary for platforms (maybe Alpha, certainly PowerPC GNU/Linux | |
21445 | with some versions of binutils) where shared libraries could have | |
21446 | relocations against symbols in their debug information - the | |
21447 | minimal symbol would have the right address, but the debug info | |
21448 | would not. It's no longer necessary, because we will explicitly | |
21449 | apply relocations when we read in the debug information now. */ | |
21450 | ||
21451 | /* A DW_AT_location attribute with no contents indicates that a | |
21452 | variable has been optimized away. */ | |
21453 | if (attr_form_is_block (attr) && DW_BLOCK (attr)->size == 0) | |
21454 | { | |
f1e6e072 | 21455 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
4c2df51b DJ |
21456 | return; |
21457 | } | |
21458 | ||
21459 | /* Handle one degenerate form of location expression specially, to | |
21460 | preserve GDB's previous behavior when section offsets are | |
336d760d AT |
21461 | specified. If this is just a DW_OP_addr, DW_OP_addrx, or |
21462 | DW_OP_GNU_addr_index then mark this symbol as LOC_STATIC. */ | |
4c2df51b DJ |
21463 | |
21464 | if (attr_form_is_block (attr) | |
3019eac3 DE |
21465 | && ((DW_BLOCK (attr)->data[0] == DW_OP_addr |
21466 | && DW_BLOCK (attr)->size == 1 + cu_header->addr_size) | |
336d760d AT |
21467 | || ((DW_BLOCK (attr)->data[0] == DW_OP_GNU_addr_index |
21468 | || DW_BLOCK (attr)->data[0] == DW_OP_addrx) | |
3019eac3 DE |
21469 | && (DW_BLOCK (attr)->size |
21470 | == 1 + leb128_size (&DW_BLOCK (attr)->data[1]))))) | |
4c2df51b | 21471 | { |
891d2f0b | 21472 | unsigned int dummy; |
4c2df51b | 21473 | |
3019eac3 DE |
21474 | if (DW_BLOCK (attr)->data[0] == DW_OP_addr) |
21475 | SYMBOL_VALUE_ADDRESS (sym) = | |
21476 | read_address (objfile->obfd, DW_BLOCK (attr)->data + 1, cu, &dummy); | |
21477 | else | |
21478 | SYMBOL_VALUE_ADDRESS (sym) = | |
21479 | read_addr_index_from_leb128 (cu, DW_BLOCK (attr)->data + 1, &dummy); | |
f1e6e072 | 21480 | SYMBOL_ACLASS_INDEX (sym) = LOC_STATIC; |
4c2df51b DJ |
21481 | fixup_symbol_section (sym, objfile); |
21482 | SYMBOL_VALUE_ADDRESS (sym) += ANOFFSET (objfile->section_offsets, | |
21483 | SYMBOL_SECTION (sym)); | |
4c2df51b DJ |
21484 | return; |
21485 | } | |
21486 | ||
21487 | /* NOTE drow/2002-01-30: It might be worthwhile to have a static | |
21488 | expression evaluator, and use LOC_COMPUTED only when necessary | |
21489 | (i.e. when the value of a register or memory location is | |
21490 | referenced, or a thread-local block, etc.). Then again, it might | |
21491 | not be worthwhile. I'm assuming that it isn't unless performance | |
21492 | or memory numbers show me otherwise. */ | |
21493 | ||
f1e6e072 | 21494 | dwarf2_symbol_mark_computed (attr, sym, cu, 0); |
8be455d7 | 21495 | |
f1e6e072 | 21496 | if (SYMBOL_COMPUTED_OPS (sym)->location_has_loclist) |
9068261f | 21497 | cu->has_loclist = true; |
4c2df51b DJ |
21498 | } |
21499 | ||
c906108c SS |
21500 | /* Given a pointer to a DWARF information entry, figure out if we need |
21501 | to make a symbol table entry for it, and if so, create a new entry | |
21502 | and return a pointer to it. | |
21503 | If TYPE is NULL, determine symbol type from the die, otherwise | |
34eaf542 TT |
21504 | used the passed type. |
21505 | If SPACE is not NULL, use it to hold the new symbol. If it is | |
21506 | NULL, allocate a new symbol on the objfile's obstack. */ | |
c906108c SS |
21507 | |
21508 | static struct symbol * | |
5e2db402 TT |
21509 | new_symbol (struct die_info *die, struct type *type, struct dwarf2_cu *cu, |
21510 | struct symbol *space) | |
c906108c | 21511 | { |
518817b3 SM |
21512 | struct dwarf2_per_objfile *dwarf2_per_objfile |
21513 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 21514 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3e29f34a | 21515 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c906108c | 21516 | struct symbol *sym = NULL; |
15d034d0 | 21517 | const char *name; |
c906108c SS |
21518 | struct attribute *attr = NULL; |
21519 | struct attribute *attr2 = NULL; | |
e142c38c | 21520 | CORE_ADDR baseaddr; |
e37fd15a SW |
21521 | struct pending **list_to_add = NULL; |
21522 | ||
edb3359d | 21523 | int inlined_func = (die->tag == DW_TAG_inlined_subroutine); |
e142c38c DJ |
21524 | |
21525 | baseaddr = ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
c906108c | 21526 | |
94af9270 | 21527 | name = dwarf2_name (die, cu); |
c906108c SS |
21528 | if (name) |
21529 | { | |
94af9270 | 21530 | const char *linkagename; |
34eaf542 | 21531 | int suppress_add = 0; |
94af9270 | 21532 | |
34eaf542 TT |
21533 | if (space) |
21534 | sym = space; | |
21535 | else | |
e623cf5d | 21536 | sym = allocate_symbol (objfile); |
c906108c | 21537 | OBJSTAT (objfile, n_syms++); |
2de7ced7 DJ |
21538 | |
21539 | /* Cache this symbol's name and the name's demangled form (if any). */ | |
f85f34ed | 21540 | SYMBOL_SET_LANGUAGE (sym, cu->language, &objfile->objfile_obstack); |
94af9270 KS |
21541 | linkagename = dwarf2_physname (name, die, cu); |
21542 | SYMBOL_SET_NAMES (sym, linkagename, strlen (linkagename), 0, objfile); | |
c906108c | 21543 | |
f55ee35c JK |
21544 | /* Fortran does not have mangling standard and the mangling does differ |
21545 | between gfortran, iFort etc. */ | |
21546 | if (cu->language == language_fortran | |
b250c185 | 21547 | && symbol_get_demangled_name (&(sym->ginfo)) == NULL) |
29df156d | 21548 | symbol_set_demangled_name (&(sym->ginfo), |
cfc594ee | 21549 | dwarf2_full_name (name, die, cu), |
29df156d | 21550 | NULL); |
f55ee35c | 21551 | |
c906108c | 21552 | /* Default assumptions. |
c5aa993b | 21553 | Use the passed type or decode it from the die. */ |
176620f1 | 21554 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
f1e6e072 | 21555 | SYMBOL_ACLASS_INDEX (sym) = LOC_OPTIMIZED_OUT; |
c906108c SS |
21556 | if (type != NULL) |
21557 | SYMBOL_TYPE (sym) = type; | |
21558 | else | |
e7c27a73 | 21559 | SYMBOL_TYPE (sym) = die_type (die, cu); |
edb3359d DJ |
21560 | attr = dwarf2_attr (die, |
21561 | inlined_func ? DW_AT_call_line : DW_AT_decl_line, | |
21562 | cu); | |
c906108c SS |
21563 | if (attr) |
21564 | { | |
21565 | SYMBOL_LINE (sym) = DW_UNSND (attr); | |
21566 | } | |
cb1df416 | 21567 | |
edb3359d DJ |
21568 | attr = dwarf2_attr (die, |
21569 | inlined_func ? DW_AT_call_file : DW_AT_decl_file, | |
21570 | cu); | |
cb1df416 DJ |
21571 | if (attr) |
21572 | { | |
ecfb656c | 21573 | file_name_index file_index = (file_name_index) DW_UNSND (attr); |
8c43009f | 21574 | struct file_entry *fe; |
9a619af0 | 21575 | |
ecfb656c PA |
21576 | if (cu->line_header != NULL) |
21577 | fe = cu->line_header->file_name_at (file_index); | |
8c43009f PA |
21578 | else |
21579 | fe = NULL; | |
21580 | ||
21581 | if (fe == NULL) | |
b98664d3 | 21582 | complaint (_("file index out of range")); |
8c43009f PA |
21583 | else |
21584 | symbol_set_symtab (sym, fe->symtab); | |
cb1df416 DJ |
21585 | } |
21586 | ||
c906108c SS |
21587 | switch (die->tag) |
21588 | { | |
21589 | case DW_TAG_label: | |
e142c38c | 21590 | attr = dwarf2_attr (die, DW_AT_low_pc, cu); |
c906108c | 21591 | if (attr) |
3e29f34a MR |
21592 | { |
21593 | CORE_ADDR addr; | |
21594 | ||
21595 | addr = attr_value_as_address (attr); | |
21596 | addr = gdbarch_adjust_dwarf2_addr (gdbarch, addr + baseaddr); | |
21597 | SYMBOL_VALUE_ADDRESS (sym) = addr; | |
21598 | } | |
0f5238ed TT |
21599 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_core_addr; |
21600 | SYMBOL_DOMAIN (sym) = LABEL_DOMAIN; | |
f1e6e072 | 21601 | SYMBOL_ACLASS_INDEX (sym) = LOC_LABEL; |
d3cb6808 | 21602 | add_symbol_to_list (sym, cu->list_in_scope); |
c906108c SS |
21603 | break; |
21604 | case DW_TAG_subprogram: | |
21605 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21606 | finish_block. */ | |
f1e6e072 | 21607 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
e142c38c | 21608 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
2cfa0c8d JB |
21609 | if ((attr2 && (DW_UNSND (attr2) != 0)) |
21610 | || cu->language == language_ada) | |
c906108c | 21611 | { |
2cfa0c8d JB |
21612 | /* Subprograms marked external are stored as a global symbol. |
21613 | Ada subprograms, whether marked external or not, are always | |
21614 | stored as a global symbol, because we want to be able to | |
21615 | access them globally. For instance, we want to be able | |
21616 | to break on a nested subprogram without having to | |
21617 | specify the context. */ | |
c24bdb02 | 21618 | list_to_add = cu->get_builder ()->get_global_symbols (); |
c906108c SS |
21619 | } |
21620 | else | |
21621 | { | |
e37fd15a | 21622 | list_to_add = cu->list_in_scope; |
c906108c SS |
21623 | } |
21624 | break; | |
edb3359d DJ |
21625 | case DW_TAG_inlined_subroutine: |
21626 | /* SYMBOL_BLOCK_VALUE (sym) will be filled in later by | |
21627 | finish_block. */ | |
f1e6e072 | 21628 | SYMBOL_ACLASS_INDEX (sym) = LOC_BLOCK; |
edb3359d | 21629 | SYMBOL_INLINED (sym) = 1; |
481860b3 | 21630 | list_to_add = cu->list_in_scope; |
edb3359d | 21631 | break; |
34eaf542 TT |
21632 | case DW_TAG_template_value_param: |
21633 | suppress_add = 1; | |
21634 | /* Fall through. */ | |
72929c62 | 21635 | case DW_TAG_constant: |
c906108c | 21636 | case DW_TAG_variable: |
254e6b9e | 21637 | case DW_TAG_member: |
0963b4bd MS |
21638 | /* Compilation with minimal debug info may result in |
21639 | variables with missing type entries. Change the | |
21640 | misleading `void' type to something sensible. */ | |
c906108c | 21641 | if (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_VOID) |
46a4882b | 21642 | SYMBOL_TYPE (sym) = objfile_type (objfile)->builtin_int; |
64c50499 | 21643 | |
e142c38c | 21644 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
254e6b9e DE |
21645 | /* In the case of DW_TAG_member, we should only be called for |
21646 | static const members. */ | |
21647 | if (die->tag == DW_TAG_member) | |
21648 | { | |
3863f96c DE |
21649 | /* dwarf2_add_field uses die_is_declaration, |
21650 | so we do the same. */ | |
254e6b9e DE |
21651 | gdb_assert (die_is_declaration (die, cu)); |
21652 | gdb_assert (attr); | |
21653 | } | |
c906108c SS |
21654 | if (attr) |
21655 | { | |
e7c27a73 | 21656 | dwarf2_const_value (attr, sym, cu); |
e142c38c | 21657 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
e37fd15a | 21658 | if (!suppress_add) |
34eaf542 TT |
21659 | { |
21660 | if (attr2 && (DW_UNSND (attr2) != 0)) | |
c24bdb02 | 21661 | list_to_add = cu->get_builder ()->get_global_symbols (); |
34eaf542 | 21662 | else |
e37fd15a | 21663 | list_to_add = cu->list_in_scope; |
34eaf542 | 21664 | } |
c906108c SS |
21665 | break; |
21666 | } | |
e142c38c | 21667 | attr = dwarf2_attr (die, DW_AT_location, cu); |
c906108c SS |
21668 | if (attr) |
21669 | { | |
e7c27a73 | 21670 | var_decode_location (attr, sym, cu); |
e142c38c | 21671 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
4357ac6c TT |
21672 | |
21673 | /* Fortran explicitly imports any global symbols to the local | |
21674 | scope by DW_TAG_common_block. */ | |
21675 | if (cu->language == language_fortran && die->parent | |
21676 | && die->parent->tag == DW_TAG_common_block) | |
21677 | attr2 = NULL; | |
21678 | ||
caac4577 JG |
21679 | if (SYMBOL_CLASS (sym) == LOC_STATIC |
21680 | && SYMBOL_VALUE_ADDRESS (sym) == 0 | |
21681 | && !dwarf2_per_objfile->has_section_at_zero) | |
21682 | { | |
21683 | /* When a static variable is eliminated by the linker, | |
21684 | the corresponding debug information is not stripped | |
21685 | out, but the variable address is set to null; | |
21686 | do not add such variables into symbol table. */ | |
21687 | } | |
21688 | else if (attr2 && (DW_UNSND (attr2) != 0)) | |
1c809c68 | 21689 | { |
f55ee35c JK |
21690 | /* Workaround gfortran PR debug/40040 - it uses |
21691 | DW_AT_location for variables in -fPIC libraries which may | |
21692 | get overriden by other libraries/executable and get | |
21693 | a different address. Resolve it by the minimal symbol | |
21694 | which may come from inferior's executable using copy | |
21695 | relocation. Make this workaround only for gfortran as for | |
21696 | other compilers GDB cannot guess the minimal symbol | |
21697 | Fortran mangling kind. */ | |
21698 | if (cu->language == language_fortran && die->parent | |
21699 | && die->parent->tag == DW_TAG_module | |
21700 | && cu->producer | |
28586665 | 21701 | && startswith (cu->producer, "GNU Fortran")) |
f1e6e072 | 21702 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
f55ee35c | 21703 | |
1c809c68 TT |
21704 | /* A variable with DW_AT_external is never static, |
21705 | but it may be block-scoped. */ | |
804d2729 | 21706 | list_to_add |
c24bdb02 KS |
21707 | = ((cu->list_in_scope |
21708 | == cu->get_builder ()->get_file_symbols ()) | |
21709 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21710 | : cu->list_in_scope); |
1c809c68 | 21711 | } |
c906108c | 21712 | else |
e37fd15a | 21713 | list_to_add = cu->list_in_scope; |
c906108c SS |
21714 | } |
21715 | else | |
21716 | { | |
21717 | /* We do not know the address of this symbol. | |
c5aa993b JM |
21718 | If it is an external symbol and we have type information |
21719 | for it, enter the symbol as a LOC_UNRESOLVED symbol. | |
21720 | The address of the variable will then be determined from | |
21721 | the minimal symbol table whenever the variable is | |
21722 | referenced. */ | |
e142c38c | 21723 | attr2 = dwarf2_attr (die, DW_AT_external, cu); |
0971de02 TT |
21724 | |
21725 | /* Fortran explicitly imports any global symbols to the local | |
21726 | scope by DW_TAG_common_block. */ | |
21727 | if (cu->language == language_fortran && die->parent | |
21728 | && die->parent->tag == DW_TAG_common_block) | |
21729 | { | |
21730 | /* SYMBOL_CLASS doesn't matter here because | |
21731 | read_common_block is going to reset it. */ | |
21732 | if (!suppress_add) | |
21733 | list_to_add = cu->list_in_scope; | |
21734 | } | |
21735 | else if (attr2 && (DW_UNSND (attr2) != 0) | |
21736 | && dwarf2_attr (die, DW_AT_type, cu) != NULL) | |
c906108c | 21737 | { |
0fe7935b DJ |
21738 | /* A variable with DW_AT_external is never static, but it |
21739 | may be block-scoped. */ | |
804d2729 | 21740 | list_to_add |
c24bdb02 KS |
21741 | = ((cu->list_in_scope |
21742 | == cu->get_builder ()->get_file_symbols ()) | |
21743 | ? cu->get_builder ()->get_global_symbols () | |
804d2729 | 21744 | : cu->list_in_scope); |
0fe7935b | 21745 | |
f1e6e072 | 21746 | SYMBOL_ACLASS_INDEX (sym) = LOC_UNRESOLVED; |
c906108c | 21747 | } |
442ddf59 JK |
21748 | else if (!die_is_declaration (die, cu)) |
21749 | { | |
21750 | /* Use the default LOC_OPTIMIZED_OUT class. */ | |
21751 | gdb_assert (SYMBOL_CLASS (sym) == LOC_OPTIMIZED_OUT); | |
e37fd15a SW |
21752 | if (!suppress_add) |
21753 | list_to_add = cu->list_in_scope; | |
442ddf59 | 21754 | } |
c906108c SS |
21755 | } |
21756 | break; | |
21757 | case DW_TAG_formal_parameter: | |
a60f3166 TT |
21758 | { |
21759 | /* If we are inside a function, mark this as an argument. If | |
21760 | not, we might be looking at an argument to an inlined function | |
21761 | when we do not have enough information to show inlined frames; | |
21762 | pretend it's a local variable in that case so that the user can | |
21763 | still see it. */ | |
804d2729 | 21764 | struct context_stack *curr |
c24bdb02 | 21765 | = cu->get_builder ()->get_current_context_stack (); |
a60f3166 TT |
21766 | if (curr != nullptr && curr->name != nullptr) |
21767 | SYMBOL_IS_ARGUMENT (sym) = 1; | |
21768 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
21769 | if (attr) | |
21770 | { | |
21771 | var_decode_location (attr, sym, cu); | |
21772 | } | |
21773 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
21774 | if (attr) | |
21775 | { | |
21776 | dwarf2_const_value (attr, sym, cu); | |
21777 | } | |
f346a30d | 21778 | |
a60f3166 TT |
21779 | list_to_add = cu->list_in_scope; |
21780 | } | |
c906108c SS |
21781 | break; |
21782 | case DW_TAG_unspecified_parameters: | |
21783 | /* From varargs functions; gdb doesn't seem to have any | |
21784 | interest in this information, so just ignore it for now. | |
21785 | (FIXME?) */ | |
21786 | break; | |
34eaf542 TT |
21787 | case DW_TAG_template_type_param: |
21788 | suppress_add = 1; | |
21789 | /* Fall through. */ | |
c906108c | 21790 | case DW_TAG_class_type: |
680b30c7 | 21791 | case DW_TAG_interface_type: |
c906108c SS |
21792 | case DW_TAG_structure_type: |
21793 | case DW_TAG_union_type: | |
72019c9c | 21794 | case DW_TAG_set_type: |
c906108c | 21795 | case DW_TAG_enumeration_type: |
f1e6e072 | 21796 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21797 | SYMBOL_DOMAIN (sym) = STRUCT_DOMAIN; |
c906108c | 21798 | |
63d06c5c | 21799 | { |
9c37b5ae | 21800 | /* NOTE: carlton/2003-11-10: C++ class symbols shouldn't |
63d06c5c DC |
21801 | really ever be static objects: otherwise, if you try |
21802 | to, say, break of a class's method and you're in a file | |
21803 | which doesn't mention that class, it won't work unless | |
21804 | the check for all static symbols in lookup_symbol_aux | |
21805 | saves you. See the OtherFileClass tests in | |
21806 | gdb.c++/namespace.exp. */ | |
21807 | ||
e37fd15a | 21808 | if (!suppress_add) |
34eaf542 | 21809 | { |
c24bdb02 | 21810 | buildsym_compunit *builder = cu->get_builder (); |
804d2729 | 21811 | list_to_add |
c24bdb02 | 21812 | = (cu->list_in_scope == builder->get_file_symbols () |
804d2729 | 21813 | && cu->language == language_cplus |
c24bdb02 | 21814 | ? builder->get_global_symbols () |
804d2729 | 21815 | : cu->list_in_scope); |
63d06c5c | 21816 | |
64382290 | 21817 | /* The semantics of C++ state that "struct foo { |
9c37b5ae | 21818 | ... }" also defines a typedef for "foo". */ |
64382290 | 21819 | if (cu->language == language_cplus |
45280282 | 21820 | || cu->language == language_ada |
c44af4eb TT |
21821 | || cu->language == language_d |
21822 | || cu->language == language_rust) | |
64382290 TT |
21823 | { |
21824 | /* The symbol's name is already allocated along | |
21825 | with this objfile, so we don't need to | |
21826 | duplicate it for the type. */ | |
21827 | if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0) | |
21828 | TYPE_NAME (SYMBOL_TYPE (sym)) = SYMBOL_SEARCH_NAME (sym); | |
21829 | } | |
63d06c5c DC |
21830 | } |
21831 | } | |
c906108c SS |
21832 | break; |
21833 | case DW_TAG_typedef: | |
f1e6e072 | 21834 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
63d06c5c | 21835 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21836 | list_to_add = cu->list_in_scope; |
63d06c5c | 21837 | break; |
c906108c | 21838 | case DW_TAG_base_type: |
a02abb62 | 21839 | case DW_TAG_subrange_type: |
f1e6e072 | 21840 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
176620f1 | 21841 | SYMBOL_DOMAIN (sym) = VAR_DOMAIN; |
e37fd15a | 21842 | list_to_add = cu->list_in_scope; |
c906108c SS |
21843 | break; |
21844 | case DW_TAG_enumerator: | |
e142c38c | 21845 | attr = dwarf2_attr (die, DW_AT_const_value, cu); |
c906108c SS |
21846 | if (attr) |
21847 | { | |
e7c27a73 | 21848 | dwarf2_const_value (attr, sym, cu); |
c906108c | 21849 | } |
63d06c5c DC |
21850 | { |
21851 | /* NOTE: carlton/2003-11-10: See comment above in the | |
21852 | DW_TAG_class_type, etc. block. */ | |
21853 | ||
804d2729 | 21854 | list_to_add |
c24bdb02 | 21855 | = (cu->list_in_scope == cu->get_builder ()->get_file_symbols () |
804d2729 | 21856 | && cu->language == language_cplus |
c24bdb02 | 21857 | ? cu->get_builder ()->get_global_symbols () |
804d2729 | 21858 | : cu->list_in_scope); |
63d06c5c | 21859 | } |
c906108c | 21860 | break; |
74921315 | 21861 | case DW_TAG_imported_declaration: |
5c4e30ca | 21862 | case DW_TAG_namespace: |
f1e6e072 | 21863 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; |
c24bdb02 | 21864 | list_to_add = cu->get_builder ()->get_global_symbols (); |
5c4e30ca | 21865 | break; |
530e8392 KB |
21866 | case DW_TAG_module: |
21867 | SYMBOL_ACLASS_INDEX (sym) = LOC_TYPEDEF; | |
21868 | SYMBOL_DOMAIN (sym) = MODULE_DOMAIN; | |
c24bdb02 | 21869 | list_to_add = cu->get_builder ()->get_global_symbols (); |
530e8392 | 21870 | break; |
4357ac6c | 21871 | case DW_TAG_common_block: |
f1e6e072 | 21872 | SYMBOL_ACLASS_INDEX (sym) = LOC_COMMON_BLOCK; |
4357ac6c | 21873 | SYMBOL_DOMAIN (sym) = COMMON_BLOCK_DOMAIN; |
d3cb6808 | 21874 | add_symbol_to_list (sym, cu->list_in_scope); |
4357ac6c | 21875 | break; |
c906108c SS |
21876 | default: |
21877 | /* Not a tag we recognize. Hopefully we aren't processing | |
21878 | trash data, but since we must specifically ignore things | |
21879 | we don't recognize, there is nothing else we should do at | |
0963b4bd | 21880 | this point. */ |
b98664d3 | 21881 | complaint (_("unsupported tag: '%s'"), |
4d3c2250 | 21882 | dwarf_tag_name (die->tag)); |
c906108c SS |
21883 | break; |
21884 | } | |
df8a16a1 | 21885 | |
e37fd15a SW |
21886 | if (suppress_add) |
21887 | { | |
21888 | sym->hash_next = objfile->template_symbols; | |
21889 | objfile->template_symbols = sym; | |
21890 | list_to_add = NULL; | |
21891 | } | |
21892 | ||
21893 | if (list_to_add != NULL) | |
d3cb6808 | 21894 | add_symbol_to_list (sym, list_to_add); |
e37fd15a | 21895 | |
df8a16a1 DJ |
21896 | /* For the benefit of old versions of GCC, check for anonymous |
21897 | namespaces based on the demangled name. */ | |
4d4ec4e5 | 21898 | if (!cu->processing_has_namespace_info |
94af9270 | 21899 | && cu->language == language_cplus) |
c24bdb02 | 21900 | cp_scan_for_anonymous_namespaces (cu->get_builder (), sym, objfile); |
c906108c SS |
21901 | } |
21902 | return (sym); | |
21903 | } | |
21904 | ||
98bfdba5 PA |
21905 | /* Given an attr with a DW_FORM_dataN value in host byte order, |
21906 | zero-extend it as appropriate for the symbol's type. The DWARF | |
21907 | standard (v4) is not entirely clear about the meaning of using | |
21908 | DW_FORM_dataN for a constant with a signed type, where the type is | |
21909 | wider than the data. The conclusion of a discussion on the DWARF | |
21910 | list was that this is unspecified. We choose to always zero-extend | |
21911 | because that is the interpretation long in use by GCC. */ | |
c906108c | 21912 | |
98bfdba5 | 21913 | static gdb_byte * |
ff39bb5e | 21914 | dwarf2_const_value_data (const struct attribute *attr, struct obstack *obstack, |
12df843f | 21915 | struct dwarf2_cu *cu, LONGEST *value, int bits) |
c906108c | 21916 | { |
518817b3 | 21917 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e17a4113 UW |
21918 | enum bfd_endian byte_order = bfd_big_endian (objfile->obfd) ? |
21919 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE; | |
98bfdba5 PA |
21920 | LONGEST l = DW_UNSND (attr); |
21921 | ||
21922 | if (bits < sizeof (*value) * 8) | |
21923 | { | |
21924 | l &= ((LONGEST) 1 << bits) - 1; | |
21925 | *value = l; | |
21926 | } | |
21927 | else if (bits == sizeof (*value) * 8) | |
21928 | *value = l; | |
21929 | else | |
21930 | { | |
224c3ddb | 21931 | gdb_byte *bytes = (gdb_byte *) obstack_alloc (obstack, bits / 8); |
98bfdba5 PA |
21932 | store_unsigned_integer (bytes, bits / 8, byte_order, l); |
21933 | return bytes; | |
21934 | } | |
21935 | ||
21936 | return NULL; | |
21937 | } | |
21938 | ||
21939 | /* Read a constant value from an attribute. Either set *VALUE, or if | |
21940 | the value does not fit in *VALUE, set *BYTES - either already | |
21941 | allocated on the objfile obstack, or newly allocated on OBSTACK, | |
21942 | or, set *BATON, if we translated the constant to a location | |
21943 | expression. */ | |
21944 | ||
21945 | static void | |
ff39bb5e | 21946 | dwarf2_const_value_attr (const struct attribute *attr, struct type *type, |
98bfdba5 PA |
21947 | const char *name, struct obstack *obstack, |
21948 | struct dwarf2_cu *cu, | |
d521ce57 | 21949 | LONGEST *value, const gdb_byte **bytes, |
98bfdba5 PA |
21950 | struct dwarf2_locexpr_baton **baton) |
21951 | { | |
518817b3 | 21952 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
98bfdba5 | 21953 | struct comp_unit_head *cu_header = &cu->header; |
c906108c | 21954 | struct dwarf_block *blk; |
98bfdba5 PA |
21955 | enum bfd_endian byte_order = (bfd_big_endian (objfile->obfd) ? |
21956 | BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); | |
21957 | ||
21958 | *value = 0; | |
21959 | *bytes = NULL; | |
21960 | *baton = NULL; | |
c906108c SS |
21961 | |
21962 | switch (attr->form) | |
21963 | { | |
21964 | case DW_FORM_addr: | |
336d760d | 21965 | case DW_FORM_addrx: |
3019eac3 | 21966 | case DW_FORM_GNU_addr_index: |
ac56253d | 21967 | { |
ac56253d TT |
21968 | gdb_byte *data; |
21969 | ||
98bfdba5 PA |
21970 | if (TYPE_LENGTH (type) != cu_header->addr_size) |
21971 | dwarf2_const_value_length_mismatch_complaint (name, | |
ac56253d | 21972 | cu_header->addr_size, |
98bfdba5 | 21973 | TYPE_LENGTH (type)); |
ac56253d TT |
21974 | /* Symbols of this form are reasonably rare, so we just |
21975 | piggyback on the existing location code rather than writing | |
21976 | a new implementation of symbol_computed_ops. */ | |
8d749320 | 21977 | *baton = XOBNEW (obstack, struct dwarf2_locexpr_baton); |
98bfdba5 PA |
21978 | (*baton)->per_cu = cu->per_cu; |
21979 | gdb_assert ((*baton)->per_cu); | |
ac56253d | 21980 | |
98bfdba5 | 21981 | (*baton)->size = 2 + cu_header->addr_size; |
224c3ddb | 21982 | data = (gdb_byte *) obstack_alloc (obstack, (*baton)->size); |
98bfdba5 | 21983 | (*baton)->data = data; |
ac56253d TT |
21984 | |
21985 | data[0] = DW_OP_addr; | |
21986 | store_unsigned_integer (&data[1], cu_header->addr_size, | |
21987 | byte_order, DW_ADDR (attr)); | |
21988 | data[cu_header->addr_size + 1] = DW_OP_stack_value; | |
ac56253d | 21989 | } |
c906108c | 21990 | break; |
4ac36638 | 21991 | case DW_FORM_string: |
93b5768b | 21992 | case DW_FORM_strp: |
cf532bd1 | 21993 | case DW_FORM_strx: |
3019eac3 | 21994 | case DW_FORM_GNU_str_index: |
36586728 | 21995 | case DW_FORM_GNU_strp_alt: |
98bfdba5 PA |
21996 | /* DW_STRING is already allocated on the objfile obstack, point |
21997 | directly to it. */ | |
d521ce57 | 21998 | *bytes = (const gdb_byte *) DW_STRING (attr); |
93b5768b | 21999 | break; |
c906108c SS |
22000 | case DW_FORM_block1: |
22001 | case DW_FORM_block2: | |
22002 | case DW_FORM_block4: | |
22003 | case DW_FORM_block: | |
2dc7f7b3 | 22004 | case DW_FORM_exprloc: |
0224619f | 22005 | case DW_FORM_data16: |
c906108c | 22006 | blk = DW_BLOCK (attr); |
98bfdba5 PA |
22007 | if (TYPE_LENGTH (type) != blk->size) |
22008 | dwarf2_const_value_length_mismatch_complaint (name, blk->size, | |
22009 | TYPE_LENGTH (type)); | |
22010 | *bytes = blk->data; | |
c906108c | 22011 | break; |
2df3850c JM |
22012 | |
22013 | /* The DW_AT_const_value attributes are supposed to carry the | |
22014 | symbol's value "represented as it would be on the target | |
22015 | architecture." By the time we get here, it's already been | |
22016 | converted to host endianness, so we just need to sign- or | |
22017 | zero-extend it as appropriate. */ | |
22018 | case DW_FORM_data1: | |
3aef2284 | 22019 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 8); |
2df3850c | 22020 | break; |
c906108c | 22021 | case DW_FORM_data2: |
3aef2284 | 22022 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 16); |
2df3850c | 22023 | break; |
c906108c | 22024 | case DW_FORM_data4: |
3aef2284 | 22025 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 32); |
2df3850c | 22026 | break; |
c906108c | 22027 | case DW_FORM_data8: |
3aef2284 | 22028 | *bytes = dwarf2_const_value_data (attr, obstack, cu, value, 64); |
2df3850c JM |
22029 | break; |
22030 | ||
c906108c | 22031 | case DW_FORM_sdata: |
663c44ac | 22032 | case DW_FORM_implicit_const: |
98bfdba5 | 22033 | *value = DW_SND (attr); |
2df3850c JM |
22034 | break; |
22035 | ||
c906108c | 22036 | case DW_FORM_udata: |
98bfdba5 | 22037 | *value = DW_UNSND (attr); |
c906108c | 22038 | break; |
2df3850c | 22039 | |
c906108c | 22040 | default: |
b98664d3 | 22041 | complaint (_("unsupported const value attribute form: '%s'"), |
4d3c2250 | 22042 | dwarf_form_name (attr->form)); |
98bfdba5 | 22043 | *value = 0; |
c906108c SS |
22044 | break; |
22045 | } | |
22046 | } | |
22047 | ||
2df3850c | 22048 | |
98bfdba5 PA |
22049 | /* Copy constant value from an attribute to a symbol. */ |
22050 | ||
2df3850c | 22051 | static void |
ff39bb5e | 22052 | dwarf2_const_value (const struct attribute *attr, struct symbol *sym, |
98bfdba5 | 22053 | struct dwarf2_cu *cu) |
2df3850c | 22054 | { |
518817b3 | 22055 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
12df843f | 22056 | LONGEST value; |
d521ce57 | 22057 | const gdb_byte *bytes; |
98bfdba5 | 22058 | struct dwarf2_locexpr_baton *baton; |
2df3850c | 22059 | |
98bfdba5 PA |
22060 | dwarf2_const_value_attr (attr, SYMBOL_TYPE (sym), |
22061 | SYMBOL_PRINT_NAME (sym), | |
22062 | &objfile->objfile_obstack, cu, | |
22063 | &value, &bytes, &baton); | |
2df3850c | 22064 | |
98bfdba5 PA |
22065 | if (baton != NULL) |
22066 | { | |
98bfdba5 | 22067 | SYMBOL_LOCATION_BATON (sym) = baton; |
f1e6e072 | 22068 | SYMBOL_ACLASS_INDEX (sym) = dwarf2_locexpr_index; |
98bfdba5 PA |
22069 | } |
22070 | else if (bytes != NULL) | |
22071 | { | |
22072 | SYMBOL_VALUE_BYTES (sym) = bytes; | |
f1e6e072 | 22073 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST_BYTES; |
98bfdba5 PA |
22074 | } |
22075 | else | |
22076 | { | |
22077 | SYMBOL_VALUE (sym) = value; | |
f1e6e072 | 22078 | SYMBOL_ACLASS_INDEX (sym) = LOC_CONST; |
98bfdba5 | 22079 | } |
2df3850c JM |
22080 | } |
22081 | ||
c906108c SS |
22082 | /* Return the type of the die in question using its DW_AT_type attribute. */ |
22083 | ||
22084 | static struct type * | |
e7c27a73 | 22085 | die_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22086 | { |
c906108c | 22087 | struct attribute *type_attr; |
c906108c | 22088 | |
e142c38c | 22089 | type_attr = dwarf2_attr (die, DW_AT_type, cu); |
c906108c SS |
22090 | if (!type_attr) |
22091 | { | |
518817b3 | 22092 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22093 | /* A missing DW_AT_type represents a void type. */ |
518817b3 | 22094 | return objfile_type (objfile)->builtin_void; |
c906108c | 22095 | } |
348e048f | 22096 | |
673bfd45 | 22097 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22098 | } |
22099 | ||
b4ba55a1 JB |
22100 | /* True iff CU's producer generates GNAT Ada auxiliary information |
22101 | that allows to find parallel types through that information instead | |
22102 | of having to do expensive parallel lookups by type name. */ | |
22103 | ||
22104 | static int | |
22105 | need_gnat_info (struct dwarf2_cu *cu) | |
22106 | { | |
de4cb04a JB |
22107 | /* Assume that the Ada compiler was GNAT, which always produces |
22108 | the auxiliary information. */ | |
22109 | return (cu->language == language_ada); | |
b4ba55a1 JB |
22110 | } |
22111 | ||
b4ba55a1 JB |
22112 | /* Return the auxiliary type of the die in question using its |
22113 | DW_AT_GNAT_descriptive_type attribute. Returns NULL if the | |
22114 | attribute is not present. */ | |
22115 | ||
22116 | static struct type * | |
22117 | die_descriptive_type (struct die_info *die, struct dwarf2_cu *cu) | |
22118 | { | |
b4ba55a1 | 22119 | struct attribute *type_attr; |
b4ba55a1 JB |
22120 | |
22121 | type_attr = dwarf2_attr (die, DW_AT_GNAT_descriptive_type, cu); | |
22122 | if (!type_attr) | |
22123 | return NULL; | |
22124 | ||
673bfd45 | 22125 | return lookup_die_type (die, type_attr, cu); |
b4ba55a1 JB |
22126 | } |
22127 | ||
22128 | /* If DIE has a descriptive_type attribute, then set the TYPE's | |
22129 | descriptive type accordingly. */ | |
22130 | ||
22131 | static void | |
22132 | set_descriptive_type (struct type *type, struct die_info *die, | |
22133 | struct dwarf2_cu *cu) | |
22134 | { | |
22135 | struct type *descriptive_type = die_descriptive_type (die, cu); | |
22136 | ||
22137 | if (descriptive_type) | |
22138 | { | |
22139 | ALLOCATE_GNAT_AUX_TYPE (type); | |
22140 | TYPE_DESCRIPTIVE_TYPE (type) = descriptive_type; | |
22141 | } | |
22142 | } | |
22143 | ||
c906108c SS |
22144 | /* Return the containing type of the die in question using its |
22145 | DW_AT_containing_type attribute. */ | |
22146 | ||
22147 | static struct type * | |
e7c27a73 | 22148 | die_containing_type (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22149 | { |
c906108c | 22150 | struct attribute *type_attr; |
518817b3 | 22151 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
c906108c | 22152 | |
e142c38c | 22153 | type_attr = dwarf2_attr (die, DW_AT_containing_type, cu); |
33ac96f0 JK |
22154 | if (!type_attr) |
22155 | error (_("Dwarf Error: Problem turning containing type into gdb type " | |
518817b3 | 22156 | "[in module %s]"), objfile_name (objfile)); |
33ac96f0 | 22157 | |
673bfd45 | 22158 | return lookup_die_type (die, type_attr, cu); |
c906108c SS |
22159 | } |
22160 | ||
ac9ec31b DE |
22161 | /* Return an error marker type to use for the ill formed type in DIE/CU. */ |
22162 | ||
22163 | static struct type * | |
22164 | build_error_marker_type (struct dwarf2_cu *cu, struct die_info *die) | |
22165 | { | |
518817b3 SM |
22166 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22167 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b | 22168 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
528e1572 | 22169 | char *saved; |
ac9ec31b | 22170 | |
528e1572 SM |
22171 | std::string message |
22172 | = string_printf (_("<unknown type in %s, CU %s, DIE %s>"), | |
22173 | objfile_name (objfile), | |
22174 | sect_offset_str (cu->header.sect_off), | |
22175 | sect_offset_str (die->sect_off)); | |
224c3ddb | 22176 | saved = (char *) obstack_copy0 (&objfile->objfile_obstack, |
528e1572 | 22177 | message.c_str (), message.length ()); |
ac9ec31b | 22178 | |
19f392bc | 22179 | return init_type (objfile, TYPE_CODE_ERROR, 0, saved); |
ac9ec31b DE |
22180 | } |
22181 | ||
673bfd45 | 22182 | /* Look up the type of DIE in CU using its type attribute ATTR. |
ac9ec31b DE |
22183 | ATTR must be one of: DW_AT_type, DW_AT_GNAT_descriptive_type, |
22184 | DW_AT_containing_type. | |
673bfd45 DE |
22185 | If there is no type substitute an error marker. */ |
22186 | ||
c906108c | 22187 | static struct type * |
ff39bb5e | 22188 | lookup_die_type (struct die_info *die, const struct attribute *attr, |
673bfd45 | 22189 | struct dwarf2_cu *cu) |
c906108c | 22190 | { |
518817b3 SM |
22191 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22192 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 22193 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
f792889a DJ |
22194 | struct type *this_type; |
22195 | ||
ac9ec31b DE |
22196 | gdb_assert (attr->name == DW_AT_type |
22197 | || attr->name == DW_AT_GNAT_descriptive_type | |
22198 | || attr->name == DW_AT_containing_type); | |
22199 | ||
673bfd45 DE |
22200 | /* First see if we have it cached. */ |
22201 | ||
36586728 TT |
22202 | if (attr->form == DW_FORM_GNU_ref_alt) |
22203 | { | |
22204 | struct dwarf2_per_cu_data *per_cu; | |
9c541725 | 22205 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
36586728 | 22206 | |
ed2dc618 SM |
22207 | per_cu = dwarf2_find_containing_comp_unit (sect_off, 1, |
22208 | dwarf2_per_objfile); | |
9c541725 | 22209 | this_type = get_die_type_at_offset (sect_off, per_cu); |
36586728 | 22210 | } |
7771576e | 22211 | else if (attr_form_is_ref (attr)) |
673bfd45 | 22212 | { |
9c541725 | 22213 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
673bfd45 | 22214 | |
9c541725 | 22215 | this_type = get_die_type_at_offset (sect_off, cu->per_cu); |
673bfd45 | 22216 | } |
55f1336d | 22217 | else if (attr->form == DW_FORM_ref_sig8) |
673bfd45 | 22218 | { |
ac9ec31b | 22219 | ULONGEST signature = DW_SIGNATURE (attr); |
673bfd45 | 22220 | |
ac9ec31b | 22221 | return get_signatured_type (die, signature, cu); |
673bfd45 DE |
22222 | } |
22223 | else | |
22224 | { | |
b98664d3 | 22225 | complaint (_("Dwarf Error: Bad type attribute %s in DIE" |
9d8780f0 SM |
22226 | " at %s [in module %s]"), |
22227 | dwarf_attr_name (attr->name), sect_offset_str (die->sect_off), | |
4262abfb | 22228 | objfile_name (objfile)); |
ac9ec31b | 22229 | return build_error_marker_type (cu, die); |
673bfd45 DE |
22230 | } |
22231 | ||
22232 | /* If not cached we need to read it in. */ | |
22233 | ||
22234 | if (this_type == NULL) | |
22235 | { | |
ac9ec31b | 22236 | struct die_info *type_die = NULL; |
673bfd45 DE |
22237 | struct dwarf2_cu *type_cu = cu; |
22238 | ||
7771576e | 22239 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
22240 | type_die = follow_die_ref (die, attr, &type_cu); |
22241 | if (type_die == NULL) | |
22242 | return build_error_marker_type (cu, die); | |
22243 | /* If we find the type now, it's probably because the type came | |
3019eac3 DE |
22244 | from an inter-CU reference and the type's CU got expanded before |
22245 | ours. */ | |
ac9ec31b | 22246 | this_type = read_type_die (type_die, type_cu); |
673bfd45 DE |
22247 | } |
22248 | ||
22249 | /* If we still don't have a type use an error marker. */ | |
22250 | ||
22251 | if (this_type == NULL) | |
ac9ec31b | 22252 | return build_error_marker_type (cu, die); |
673bfd45 | 22253 | |
f792889a | 22254 | return this_type; |
c906108c SS |
22255 | } |
22256 | ||
673bfd45 DE |
22257 | /* Return the type in DIE, CU. |
22258 | Returns NULL for invalid types. | |
22259 | ||
02142a6c | 22260 | This first does a lookup in die_type_hash, |
673bfd45 DE |
22261 | and only reads the die in if necessary. |
22262 | ||
22263 | NOTE: This can be called when reading in partial or full symbols. */ | |
22264 | ||
f792889a | 22265 | static struct type * |
e7c27a73 | 22266 | read_type_die (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 22267 | { |
f792889a DJ |
22268 | struct type *this_type; |
22269 | ||
22270 | this_type = get_die_type (die, cu); | |
22271 | if (this_type) | |
22272 | return this_type; | |
22273 | ||
673bfd45 DE |
22274 | return read_type_die_1 (die, cu); |
22275 | } | |
22276 | ||
22277 | /* Read the type in DIE, CU. | |
22278 | Returns NULL for invalid types. */ | |
22279 | ||
22280 | static struct type * | |
22281 | read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) | |
22282 | { | |
22283 | struct type *this_type = NULL; | |
22284 | ||
c906108c SS |
22285 | switch (die->tag) |
22286 | { | |
22287 | case DW_TAG_class_type: | |
680b30c7 | 22288 | case DW_TAG_interface_type: |
c906108c SS |
22289 | case DW_TAG_structure_type: |
22290 | case DW_TAG_union_type: | |
f792889a | 22291 | this_type = read_structure_type (die, cu); |
c906108c SS |
22292 | break; |
22293 | case DW_TAG_enumeration_type: | |
f792889a | 22294 | this_type = read_enumeration_type (die, cu); |
c906108c SS |
22295 | break; |
22296 | case DW_TAG_subprogram: | |
22297 | case DW_TAG_subroutine_type: | |
edb3359d | 22298 | case DW_TAG_inlined_subroutine: |
f792889a | 22299 | this_type = read_subroutine_type (die, cu); |
c906108c SS |
22300 | break; |
22301 | case DW_TAG_array_type: | |
f792889a | 22302 | this_type = read_array_type (die, cu); |
c906108c | 22303 | break; |
72019c9c | 22304 | case DW_TAG_set_type: |
f792889a | 22305 | this_type = read_set_type (die, cu); |
72019c9c | 22306 | break; |
c906108c | 22307 | case DW_TAG_pointer_type: |
f792889a | 22308 | this_type = read_tag_pointer_type (die, cu); |
c906108c SS |
22309 | break; |
22310 | case DW_TAG_ptr_to_member_type: | |
f792889a | 22311 | this_type = read_tag_ptr_to_member_type (die, cu); |
c906108c SS |
22312 | break; |
22313 | case DW_TAG_reference_type: | |
4297a3f0 AV |
22314 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); |
22315 | break; | |
22316 | case DW_TAG_rvalue_reference_type: | |
22317 | this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); | |
c906108c SS |
22318 | break; |
22319 | case DW_TAG_const_type: | |
f792889a | 22320 | this_type = read_tag_const_type (die, cu); |
c906108c SS |
22321 | break; |
22322 | case DW_TAG_volatile_type: | |
f792889a | 22323 | this_type = read_tag_volatile_type (die, cu); |
c906108c | 22324 | break; |
06d66ee9 TT |
22325 | case DW_TAG_restrict_type: |
22326 | this_type = read_tag_restrict_type (die, cu); | |
22327 | break; | |
c906108c | 22328 | case DW_TAG_string_type: |
f792889a | 22329 | this_type = read_tag_string_type (die, cu); |
c906108c SS |
22330 | break; |
22331 | case DW_TAG_typedef: | |
f792889a | 22332 | this_type = read_typedef (die, cu); |
c906108c | 22333 | break; |
a02abb62 | 22334 | case DW_TAG_subrange_type: |
f792889a | 22335 | this_type = read_subrange_type (die, cu); |
a02abb62 | 22336 | break; |
c906108c | 22337 | case DW_TAG_base_type: |
f792889a | 22338 | this_type = read_base_type (die, cu); |
c906108c | 22339 | break; |
81a17f79 | 22340 | case DW_TAG_unspecified_type: |
f792889a | 22341 | this_type = read_unspecified_type (die, cu); |
81a17f79 | 22342 | break; |
0114d602 DJ |
22343 | case DW_TAG_namespace: |
22344 | this_type = read_namespace_type (die, cu); | |
22345 | break; | |
f55ee35c JK |
22346 | case DW_TAG_module: |
22347 | this_type = read_module_type (die, cu); | |
22348 | break; | |
a2c2acaf MW |
22349 | case DW_TAG_atomic_type: |
22350 | this_type = read_tag_atomic_type (die, cu); | |
22351 | break; | |
c906108c | 22352 | default: |
b98664d3 | 22353 | complaint (_("unexpected tag in read_type_die: '%s'"), |
4d3c2250 | 22354 | dwarf_tag_name (die->tag)); |
c906108c SS |
22355 | break; |
22356 | } | |
63d06c5c | 22357 | |
f792889a | 22358 | return this_type; |
63d06c5c DC |
22359 | } |
22360 | ||
abc72ce4 DE |
22361 | /* See if we can figure out if the class lives in a namespace. We do |
22362 | this by looking for a member function; its demangled name will | |
22363 | contain namespace info, if there is any. | |
22364 | Return the computed name or NULL. | |
22365 | Space for the result is allocated on the objfile's obstack. | |
22366 | This is the full-die version of guess_partial_die_structure_name. | |
22367 | In this case we know DIE has no useful parent. */ | |
22368 | ||
22369 | static char * | |
22370 | guess_full_die_structure_name (struct die_info *die, struct dwarf2_cu *cu) | |
22371 | { | |
22372 | struct die_info *spec_die; | |
22373 | struct dwarf2_cu *spec_cu; | |
22374 | struct die_info *child; | |
518817b3 | 22375 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
abc72ce4 DE |
22376 | |
22377 | spec_cu = cu; | |
22378 | spec_die = die_specification (die, &spec_cu); | |
22379 | if (spec_die != NULL) | |
22380 | { | |
22381 | die = spec_die; | |
22382 | cu = spec_cu; | |
22383 | } | |
22384 | ||
22385 | for (child = die->child; | |
22386 | child != NULL; | |
22387 | child = child->sibling) | |
22388 | { | |
22389 | if (child->tag == DW_TAG_subprogram) | |
22390 | { | |
73b9be8b | 22391 | const char *linkage_name = dw2_linkage_name (child, cu); |
abc72ce4 | 22392 | |
7d45c7c3 | 22393 | if (linkage_name != NULL) |
abc72ce4 DE |
22394 | { |
22395 | char *actual_name | |
22396 | = language_class_name_from_physname (cu->language_defn, | |
7d45c7c3 | 22397 | linkage_name); |
abc72ce4 DE |
22398 | char *name = NULL; |
22399 | ||
22400 | if (actual_name != NULL) | |
22401 | { | |
15d034d0 | 22402 | const char *die_name = dwarf2_name (die, cu); |
abc72ce4 DE |
22403 | |
22404 | if (die_name != NULL | |
22405 | && strcmp (die_name, actual_name) != 0) | |
22406 | { | |
22407 | /* Strip off the class name from the full name. | |
22408 | We want the prefix. */ | |
22409 | int die_name_len = strlen (die_name); | |
22410 | int actual_name_len = strlen (actual_name); | |
22411 | ||
22412 | /* Test for '::' as a sanity check. */ | |
22413 | if (actual_name_len > die_name_len + 2 | |
3e43a32a MS |
22414 | && actual_name[actual_name_len |
22415 | - die_name_len - 1] == ':') | |
224c3ddb | 22416 | name = (char *) obstack_copy0 ( |
e3b94546 | 22417 | &objfile->per_bfd->storage_obstack, |
224c3ddb | 22418 | actual_name, actual_name_len - die_name_len - 2); |
abc72ce4 DE |
22419 | } |
22420 | } | |
22421 | xfree (actual_name); | |
22422 | return name; | |
22423 | } | |
22424 | } | |
22425 | } | |
22426 | ||
22427 | return NULL; | |
22428 | } | |
22429 | ||
96408a79 SA |
22430 | /* GCC might emit a nameless typedef that has a linkage name. Determine the |
22431 | prefix part in such case. See | |
22432 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22433 | ||
a121b7c1 | 22434 | static const char * |
96408a79 SA |
22435 | anonymous_struct_prefix (struct die_info *die, struct dwarf2_cu *cu) |
22436 | { | |
22437 | struct attribute *attr; | |
e6a959d6 | 22438 | const char *base; |
96408a79 SA |
22439 | |
22440 | if (die->tag != DW_TAG_class_type && die->tag != DW_TAG_interface_type | |
22441 | && die->tag != DW_TAG_structure_type && die->tag != DW_TAG_union_type) | |
22442 | return NULL; | |
22443 | ||
7d45c7c3 | 22444 | if (dwarf2_string_attr (die, DW_AT_name, cu) != NULL) |
96408a79 SA |
22445 | return NULL; |
22446 | ||
73b9be8b | 22447 | attr = dw2_linkage_name_attr (die, cu); |
96408a79 SA |
22448 | if (attr == NULL || DW_STRING (attr) == NULL) |
22449 | return NULL; | |
22450 | ||
22451 | /* dwarf2_name had to be already called. */ | |
22452 | gdb_assert (DW_STRING_IS_CANONICAL (attr)); | |
22453 | ||
22454 | /* Strip the base name, keep any leading namespaces/classes. */ | |
22455 | base = strrchr (DW_STRING (attr), ':'); | |
22456 | if (base == NULL || base == DW_STRING (attr) || base[-1] != ':') | |
22457 | return ""; | |
22458 | ||
518817b3 | 22459 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
e3b94546 | 22460 | return (char *) obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb SM |
22461 | DW_STRING (attr), |
22462 | &base[-1] - DW_STRING (attr)); | |
96408a79 SA |
22463 | } |
22464 | ||
fdde2d81 | 22465 | /* Return the name of the namespace/class that DIE is defined within, |
0114d602 | 22466 | or "" if we can't tell. The caller should not xfree the result. |
fdde2d81 | 22467 | |
0114d602 DJ |
22468 | For example, if we're within the method foo() in the following |
22469 | code: | |
22470 | ||
22471 | namespace N { | |
22472 | class C { | |
22473 | void foo () { | |
22474 | } | |
22475 | }; | |
22476 | } | |
22477 | ||
22478 | then determine_prefix on foo's die will return "N::C". */ | |
fdde2d81 | 22479 | |
0d5cff50 | 22480 | static const char * |
e142c38c | 22481 | determine_prefix (struct die_info *die, struct dwarf2_cu *cu) |
63d06c5c | 22482 | { |
518817b3 SM |
22483 | struct dwarf2_per_objfile *dwarf2_per_objfile |
22484 | = cu->per_cu->dwarf2_per_objfile; | |
0114d602 DJ |
22485 | struct die_info *parent, *spec_die; |
22486 | struct dwarf2_cu *spec_cu; | |
22487 | struct type *parent_type; | |
a121b7c1 | 22488 | const char *retval; |
63d06c5c | 22489 | |
9c37b5ae | 22490 | if (cu->language != language_cplus |
c44af4eb TT |
22491 | && cu->language != language_fortran && cu->language != language_d |
22492 | && cu->language != language_rust) | |
0114d602 DJ |
22493 | return ""; |
22494 | ||
96408a79 SA |
22495 | retval = anonymous_struct_prefix (die, cu); |
22496 | if (retval) | |
22497 | return retval; | |
22498 | ||
0114d602 DJ |
22499 | /* We have to be careful in the presence of DW_AT_specification. |
22500 | For example, with GCC 3.4, given the code | |
22501 | ||
22502 | namespace N { | |
22503 | void foo() { | |
22504 | // Definition of N::foo. | |
22505 | } | |
22506 | } | |
22507 | ||
22508 | then we'll have a tree of DIEs like this: | |
22509 | ||
22510 | 1: DW_TAG_compile_unit | |
22511 | 2: DW_TAG_namespace // N | |
22512 | 3: DW_TAG_subprogram // declaration of N::foo | |
22513 | 4: DW_TAG_subprogram // definition of N::foo | |
22514 | DW_AT_specification // refers to die #3 | |
22515 | ||
22516 | Thus, when processing die #4, we have to pretend that we're in | |
22517 | the context of its DW_AT_specification, namely the contex of die | |
22518 | #3. */ | |
22519 | spec_cu = cu; | |
22520 | spec_die = die_specification (die, &spec_cu); | |
22521 | if (spec_die == NULL) | |
22522 | parent = die->parent; | |
22523 | else | |
63d06c5c | 22524 | { |
0114d602 DJ |
22525 | parent = spec_die->parent; |
22526 | cu = spec_cu; | |
63d06c5c | 22527 | } |
0114d602 DJ |
22528 | |
22529 | if (parent == NULL) | |
22530 | return ""; | |
98bfdba5 PA |
22531 | else if (parent->building_fullname) |
22532 | { | |
22533 | const char *name; | |
22534 | const char *parent_name; | |
22535 | ||
22536 | /* It has been seen on RealView 2.2 built binaries, | |
22537 | DW_TAG_template_type_param types actually _defined_ as | |
22538 | children of the parent class: | |
22539 | ||
22540 | enum E {}; | |
22541 | template class <class Enum> Class{}; | |
22542 | Class<enum E> class_e; | |
22543 | ||
22544 | 1: DW_TAG_class_type (Class) | |
22545 | 2: DW_TAG_enumeration_type (E) | |
22546 | 3: DW_TAG_enumerator (enum1:0) | |
22547 | 3: DW_TAG_enumerator (enum2:1) | |
22548 | ... | |
22549 | 2: DW_TAG_template_type_param | |
22550 | DW_AT_type DW_FORM_ref_udata (E) | |
22551 | ||
22552 | Besides being broken debug info, it can put GDB into an | |
22553 | infinite loop. Consider: | |
22554 | ||
22555 | When we're building the full name for Class<E>, we'll start | |
22556 | at Class, and go look over its template type parameters, | |
22557 | finding E. We'll then try to build the full name of E, and | |
22558 | reach here. We're now trying to build the full name of E, | |
22559 | and look over the parent DIE for containing scope. In the | |
22560 | broken case, if we followed the parent DIE of E, we'd again | |
22561 | find Class, and once again go look at its template type | |
22562 | arguments, etc., etc. Simply don't consider such parent die | |
22563 | as source-level parent of this die (it can't be, the language | |
22564 | doesn't allow it), and break the loop here. */ | |
22565 | name = dwarf2_name (die, cu); | |
22566 | parent_name = dwarf2_name (parent, cu); | |
b98664d3 | 22567 | complaint (_("template param type '%s' defined within parent '%s'"), |
98bfdba5 PA |
22568 | name ? name : "<unknown>", |
22569 | parent_name ? parent_name : "<unknown>"); | |
22570 | return ""; | |
22571 | } | |
63d06c5c | 22572 | else |
0114d602 DJ |
22573 | switch (parent->tag) |
22574 | { | |
63d06c5c | 22575 | case DW_TAG_namespace: |
0114d602 | 22576 | parent_type = read_type_die (parent, cu); |
acebe513 UW |
22577 | /* GCC 4.0 and 4.1 had a bug (PR c++/28460) where they generated bogus |
22578 | DW_TAG_namespace DIEs with a name of "::" for the global namespace. | |
22579 | Work around this problem here. */ | |
22580 | if (cu->language == language_cplus | |
e86ca25f | 22581 | && strcmp (TYPE_NAME (parent_type), "::") == 0) |
acebe513 | 22582 | return ""; |
0114d602 | 22583 | /* We give a name to even anonymous namespaces. */ |
e86ca25f | 22584 | return TYPE_NAME (parent_type); |
63d06c5c | 22585 | case DW_TAG_class_type: |
680b30c7 | 22586 | case DW_TAG_interface_type: |
63d06c5c | 22587 | case DW_TAG_structure_type: |
0114d602 | 22588 | case DW_TAG_union_type: |
f55ee35c | 22589 | case DW_TAG_module: |
0114d602 | 22590 | parent_type = read_type_die (parent, cu); |
e86ca25f TT |
22591 | if (TYPE_NAME (parent_type) != NULL) |
22592 | return TYPE_NAME (parent_type); | |
0114d602 DJ |
22593 | else |
22594 | /* An anonymous structure is only allowed non-static data | |
22595 | members; no typedefs, no member functions, et cetera. | |
22596 | So it does not need a prefix. */ | |
22597 | return ""; | |
abc72ce4 | 22598 | case DW_TAG_compile_unit: |
95554aad | 22599 | case DW_TAG_partial_unit: |
abc72ce4 DE |
22600 | /* gcc-4.5 -gdwarf-4 can drop the enclosing namespace. Cope. */ |
22601 | if (cu->language == language_cplus | |
8b70b953 | 22602 | && !VEC_empty (dwarf2_section_info_def, dwarf2_per_objfile->types) |
abc72ce4 DE |
22603 | && die->child != NULL |
22604 | && (die->tag == DW_TAG_class_type | |
22605 | || die->tag == DW_TAG_structure_type | |
22606 | || die->tag == DW_TAG_union_type)) | |
22607 | { | |
22608 | char *name = guess_full_die_structure_name (die, cu); | |
22609 | if (name != NULL) | |
22610 | return name; | |
22611 | } | |
22612 | return ""; | |
3d567982 TT |
22613 | case DW_TAG_enumeration_type: |
22614 | parent_type = read_type_die (parent, cu); | |
22615 | if (TYPE_DECLARED_CLASS (parent_type)) | |
22616 | { | |
e86ca25f TT |
22617 | if (TYPE_NAME (parent_type) != NULL) |
22618 | return TYPE_NAME (parent_type); | |
3d567982 TT |
22619 | return ""; |
22620 | } | |
22621 | /* Fall through. */ | |
63d06c5c | 22622 | default: |
8176b9b8 | 22623 | return determine_prefix (parent, cu); |
63d06c5c | 22624 | } |
63d06c5c DC |
22625 | } |
22626 | ||
3e43a32a MS |
22627 | /* Return a newly-allocated string formed by concatenating PREFIX and SUFFIX |
22628 | with appropriate separator. If PREFIX or SUFFIX is NULL or empty, then | |
22629 | simply copy the SUFFIX or PREFIX, respectively. If OBS is non-null, perform | |
22630 | an obconcat, otherwise allocate storage for the result. The CU argument is | |
22631 | used to determine the language and hence, the appropriate separator. */ | |
987504bb | 22632 | |
f55ee35c | 22633 | #define MAX_SEP_LEN 7 /* strlen ("__") + strlen ("_MOD_") */ |
63d06c5c DC |
22634 | |
22635 | static char * | |
f55ee35c JK |
22636 | typename_concat (struct obstack *obs, const char *prefix, const char *suffix, |
22637 | int physname, struct dwarf2_cu *cu) | |
63d06c5c | 22638 | { |
f55ee35c | 22639 | const char *lead = ""; |
5c315b68 | 22640 | const char *sep; |
63d06c5c | 22641 | |
3e43a32a MS |
22642 | if (suffix == NULL || suffix[0] == '\0' |
22643 | || prefix == NULL || prefix[0] == '\0') | |
987504bb | 22644 | sep = ""; |
45280282 IB |
22645 | else if (cu->language == language_d) |
22646 | { | |
22647 | /* For D, the 'main' function could be defined in any module, but it | |
22648 | should never be prefixed. */ | |
22649 | if (strcmp (suffix, "D main") == 0) | |
22650 | { | |
22651 | prefix = ""; | |
22652 | sep = ""; | |
22653 | } | |
22654 | else | |
22655 | sep = "."; | |
22656 | } | |
f55ee35c JK |
22657 | else if (cu->language == language_fortran && physname) |
22658 | { | |
22659 | /* This is gfortran specific mangling. Normally DW_AT_linkage_name or | |
22660 | DW_AT_MIPS_linkage_name is preferred and used instead. */ | |
22661 | ||
22662 | lead = "__"; | |
22663 | sep = "_MOD_"; | |
22664 | } | |
987504bb JJ |
22665 | else |
22666 | sep = "::"; | |
63d06c5c | 22667 | |
6dd47d34 DE |
22668 | if (prefix == NULL) |
22669 | prefix = ""; | |
22670 | if (suffix == NULL) | |
22671 | suffix = ""; | |
22672 | ||
987504bb JJ |
22673 | if (obs == NULL) |
22674 | { | |
3e43a32a | 22675 | char *retval |
224c3ddb SM |
22676 | = ((char *) |
22677 | xmalloc (strlen (prefix) + MAX_SEP_LEN + strlen (suffix) + 1)); | |
9a619af0 | 22678 | |
f55ee35c JK |
22679 | strcpy (retval, lead); |
22680 | strcat (retval, prefix); | |
6dd47d34 DE |
22681 | strcat (retval, sep); |
22682 | strcat (retval, suffix); | |
63d06c5c DC |
22683 | return retval; |
22684 | } | |
987504bb JJ |
22685 | else |
22686 | { | |
22687 | /* We have an obstack. */ | |
f55ee35c | 22688 | return obconcat (obs, lead, prefix, sep, suffix, (char *) NULL); |
987504bb | 22689 | } |
63d06c5c DC |
22690 | } |
22691 | ||
c906108c SS |
22692 | /* Return sibling of die, NULL if no sibling. */ |
22693 | ||
f9aca02d | 22694 | static struct die_info * |
fba45db2 | 22695 | sibling_die (struct die_info *die) |
c906108c | 22696 | { |
639d11d3 | 22697 | return die->sibling; |
c906108c SS |
22698 | } |
22699 | ||
71c25dea TT |
22700 | /* Get name of a die, return NULL if not found. */ |
22701 | ||
15d034d0 TT |
22702 | static const char * |
22703 | dwarf2_canonicalize_name (const char *name, struct dwarf2_cu *cu, | |
71c25dea TT |
22704 | struct obstack *obstack) |
22705 | { | |
22706 | if (name && cu->language == language_cplus) | |
22707 | { | |
2f408ecb | 22708 | std::string canon_name = cp_canonicalize_string (name); |
71c25dea | 22709 | |
2f408ecb | 22710 | if (!canon_name.empty ()) |
71c25dea | 22711 | { |
2f408ecb PA |
22712 | if (canon_name != name) |
22713 | name = (const char *) obstack_copy0 (obstack, | |
22714 | canon_name.c_str (), | |
22715 | canon_name.length ()); | |
71c25dea TT |
22716 | } |
22717 | } | |
22718 | ||
22719 | return name; | |
c906108c SS |
22720 | } |
22721 | ||
96553a0c DE |
22722 | /* Get name of a die, return NULL if not found. |
22723 | Anonymous namespaces are converted to their magic string. */ | |
9219021c | 22724 | |
15d034d0 | 22725 | static const char * |
e142c38c | 22726 | dwarf2_name (struct die_info *die, struct dwarf2_cu *cu) |
9219021c DC |
22727 | { |
22728 | struct attribute *attr; | |
518817b3 | 22729 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
9219021c | 22730 | |
e142c38c | 22731 | attr = dwarf2_attr (die, DW_AT_name, cu); |
53832f31 | 22732 | if ((!attr || !DW_STRING (attr)) |
96553a0c | 22733 | && die->tag != DW_TAG_namespace |
53832f31 TT |
22734 | && die->tag != DW_TAG_class_type |
22735 | && die->tag != DW_TAG_interface_type | |
22736 | && die->tag != DW_TAG_structure_type | |
22737 | && die->tag != DW_TAG_union_type) | |
71c25dea TT |
22738 | return NULL; |
22739 | ||
22740 | switch (die->tag) | |
22741 | { | |
22742 | case DW_TAG_compile_unit: | |
95554aad | 22743 | case DW_TAG_partial_unit: |
71c25dea TT |
22744 | /* Compilation units have a DW_AT_name that is a filename, not |
22745 | a source language identifier. */ | |
22746 | case DW_TAG_enumeration_type: | |
22747 | case DW_TAG_enumerator: | |
22748 | /* These tags always have simple identifiers already; no need | |
22749 | to canonicalize them. */ | |
22750 | return DW_STRING (attr); | |
907af001 | 22751 | |
96553a0c DE |
22752 | case DW_TAG_namespace: |
22753 | if (attr != NULL && DW_STRING (attr) != NULL) | |
22754 | return DW_STRING (attr); | |
22755 | return CP_ANONYMOUS_NAMESPACE_STR; | |
22756 | ||
907af001 UW |
22757 | case DW_TAG_class_type: |
22758 | case DW_TAG_interface_type: | |
22759 | case DW_TAG_structure_type: | |
22760 | case DW_TAG_union_type: | |
22761 | /* Some GCC versions emit spurious DW_AT_name attributes for unnamed | |
22762 | structures or unions. These were of the form "._%d" in GCC 4.1, | |
22763 | or simply "<anonymous struct>" or "<anonymous union>" in GCC 4.3 | |
22764 | and GCC 4.4. We work around this problem by ignoring these. */ | |
53832f31 | 22765 | if (attr && DW_STRING (attr) |
61012eef GB |
22766 | && (startswith (DW_STRING (attr), "._") |
22767 | || startswith (DW_STRING (attr), "<anonymous"))) | |
907af001 | 22768 | return NULL; |
53832f31 TT |
22769 | |
22770 | /* GCC might emit a nameless typedef that has a linkage name. See | |
22771 | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47510. */ | |
22772 | if (!attr || DW_STRING (attr) == NULL) | |
22773 | { | |
df5c6c50 | 22774 | char *demangled = NULL; |
53832f31 | 22775 | |
73b9be8b | 22776 | attr = dw2_linkage_name_attr (die, cu); |
53832f31 TT |
22777 | if (attr == NULL || DW_STRING (attr) == NULL) |
22778 | return NULL; | |
22779 | ||
df5c6c50 JK |
22780 | /* Avoid demangling DW_STRING (attr) the second time on a second |
22781 | call for the same DIE. */ | |
22782 | if (!DW_STRING_IS_CANONICAL (attr)) | |
8de20a37 | 22783 | demangled = gdb_demangle (DW_STRING (attr), DMGL_TYPES); |
53832f31 TT |
22784 | |
22785 | if (demangled) | |
22786 | { | |
e6a959d6 | 22787 | const char *base; |
96408a79 | 22788 | |
53832f31 | 22789 | /* FIXME: we already did this for the partial symbol... */ |
34a68019 | 22790 | DW_STRING (attr) |
224c3ddb | 22791 | = ((const char *) |
e3b94546 | 22792 | obstack_copy0 (&objfile->per_bfd->storage_obstack, |
224c3ddb | 22793 | demangled, strlen (demangled))); |
53832f31 TT |
22794 | DW_STRING_IS_CANONICAL (attr) = 1; |
22795 | xfree (demangled); | |
96408a79 SA |
22796 | |
22797 | /* Strip any leading namespaces/classes, keep only the base name. | |
22798 | DW_AT_name for named DIEs does not contain the prefixes. */ | |
22799 | base = strrchr (DW_STRING (attr), ':'); | |
22800 | if (base && base > DW_STRING (attr) && base[-1] == ':') | |
22801 | return &base[1]; | |
22802 | else | |
22803 | return DW_STRING (attr); | |
53832f31 TT |
22804 | } |
22805 | } | |
907af001 UW |
22806 | break; |
22807 | ||
71c25dea | 22808 | default: |
907af001 UW |
22809 | break; |
22810 | } | |
22811 | ||
22812 | if (!DW_STRING_IS_CANONICAL (attr)) | |
22813 | { | |
22814 | DW_STRING (attr) | |
22815 | = dwarf2_canonicalize_name (DW_STRING (attr), cu, | |
e3b94546 | 22816 | &objfile->per_bfd->storage_obstack); |
907af001 | 22817 | DW_STRING_IS_CANONICAL (attr) = 1; |
71c25dea | 22818 | } |
907af001 | 22819 | return DW_STRING (attr); |
9219021c DC |
22820 | } |
22821 | ||
22822 | /* Return the die that this die in an extension of, or NULL if there | |
f2f0e013 DJ |
22823 | is none. *EXT_CU is the CU containing DIE on input, and the CU |
22824 | containing the return value on output. */ | |
9219021c DC |
22825 | |
22826 | static struct die_info * | |
f2f0e013 | 22827 | dwarf2_extension (struct die_info *die, struct dwarf2_cu **ext_cu) |
9219021c DC |
22828 | { |
22829 | struct attribute *attr; | |
9219021c | 22830 | |
f2f0e013 | 22831 | attr = dwarf2_attr (die, DW_AT_extension, *ext_cu); |
9219021c DC |
22832 | if (attr == NULL) |
22833 | return NULL; | |
22834 | ||
f2f0e013 | 22835 | return follow_die_ref (die, attr, ext_cu); |
9219021c DC |
22836 | } |
22837 | ||
fa9c3fa0 TT |
22838 | /* A convenience function that returns an "unknown" DWARF name, |
22839 | including the value of V. STR is the name of the entity being | |
22840 | printed, e.g., "TAG". */ | |
22841 | ||
22842 | static const char * | |
22843 | dwarf_unknown (const char *str, unsigned v) | |
22844 | { | |
22845 | char *cell = get_print_cell (); | |
22846 | xsnprintf (cell, PRINT_CELL_SIZE, "DW_%s_<unknown: %u>", str, v); | |
22847 | return cell; | |
22848 | } | |
22849 | ||
c906108c SS |
22850 | /* Convert a DIE tag into its string name. */ |
22851 | ||
f39c6ffd | 22852 | static const char * |
aa1ee363 | 22853 | dwarf_tag_name (unsigned tag) |
c906108c | 22854 | { |
f39c6ffd TT |
22855 | const char *name = get_DW_TAG_name (tag); |
22856 | ||
22857 | if (name == NULL) | |
fa9c3fa0 | 22858 | return dwarf_unknown ("TAG", tag); |
f39c6ffd TT |
22859 | |
22860 | return name; | |
c906108c SS |
22861 | } |
22862 | ||
22863 | /* Convert a DWARF attribute code into its string name. */ | |
22864 | ||
f39c6ffd | 22865 | static const char * |
aa1ee363 | 22866 | dwarf_attr_name (unsigned attr) |
c906108c | 22867 | { |
f39c6ffd TT |
22868 | const char *name; |
22869 | ||
c764a876 | 22870 | #ifdef MIPS /* collides with DW_AT_HP_block_index */ |
f39c6ffd TT |
22871 | if (attr == DW_AT_MIPS_fde) |
22872 | return "DW_AT_MIPS_fde"; | |
22873 | #else | |
22874 | if (attr == DW_AT_HP_block_index) | |
22875 | return "DW_AT_HP_block_index"; | |
c764a876 | 22876 | #endif |
f39c6ffd TT |
22877 | |
22878 | name = get_DW_AT_name (attr); | |
22879 | ||
22880 | if (name == NULL) | |
fa9c3fa0 | 22881 | return dwarf_unknown ("AT", attr); |
f39c6ffd TT |
22882 | |
22883 | return name; | |
c906108c SS |
22884 | } |
22885 | ||
22886 | /* Convert a DWARF value form code into its string name. */ | |
22887 | ||
f39c6ffd | 22888 | static const char * |
aa1ee363 | 22889 | dwarf_form_name (unsigned form) |
c906108c | 22890 | { |
f39c6ffd TT |
22891 | const char *name = get_DW_FORM_name (form); |
22892 | ||
22893 | if (name == NULL) | |
fa9c3fa0 | 22894 | return dwarf_unknown ("FORM", form); |
f39c6ffd TT |
22895 | |
22896 | return name; | |
c906108c SS |
22897 | } |
22898 | ||
a121b7c1 | 22899 | static const char * |
fba45db2 | 22900 | dwarf_bool_name (unsigned mybool) |
c906108c SS |
22901 | { |
22902 | if (mybool) | |
22903 | return "TRUE"; | |
22904 | else | |
22905 | return "FALSE"; | |
22906 | } | |
22907 | ||
22908 | /* Convert a DWARF type code into its string name. */ | |
22909 | ||
f39c6ffd | 22910 | static const char * |
aa1ee363 | 22911 | dwarf_type_encoding_name (unsigned enc) |
c906108c | 22912 | { |
f39c6ffd | 22913 | const char *name = get_DW_ATE_name (enc); |
c906108c | 22914 | |
f39c6ffd | 22915 | if (name == NULL) |
fa9c3fa0 | 22916 | return dwarf_unknown ("ATE", enc); |
c906108c | 22917 | |
f39c6ffd | 22918 | return name; |
c906108c | 22919 | } |
c906108c | 22920 | |
f9aca02d | 22921 | static void |
d97bc12b | 22922 | dump_die_shallow (struct ui_file *f, int indent, struct die_info *die) |
c906108c SS |
22923 | { |
22924 | unsigned int i; | |
22925 | ||
d97bc12b | 22926 | print_spaces (indent, f); |
9d8780f0 | 22927 | fprintf_unfiltered (f, "Die: %s (abbrev %d, offset %s)\n", |
9c541725 | 22928 | dwarf_tag_name (die->tag), die->abbrev, |
9d8780f0 | 22929 | sect_offset_str (die->sect_off)); |
d97bc12b DE |
22930 | |
22931 | if (die->parent != NULL) | |
22932 | { | |
22933 | print_spaces (indent, f); | |
9d8780f0 SM |
22934 | fprintf_unfiltered (f, " parent at offset: %s\n", |
22935 | sect_offset_str (die->parent->sect_off)); | |
d97bc12b DE |
22936 | } |
22937 | ||
22938 | print_spaces (indent, f); | |
22939 | fprintf_unfiltered (f, " has children: %s\n", | |
639d11d3 | 22940 | dwarf_bool_name (die->child != NULL)); |
c906108c | 22941 | |
d97bc12b DE |
22942 | print_spaces (indent, f); |
22943 | fprintf_unfiltered (f, " attributes:\n"); | |
22944 | ||
c906108c SS |
22945 | for (i = 0; i < die->num_attrs; ++i) |
22946 | { | |
d97bc12b DE |
22947 | print_spaces (indent, f); |
22948 | fprintf_unfiltered (f, " %s (%s) ", | |
c906108c SS |
22949 | dwarf_attr_name (die->attrs[i].name), |
22950 | dwarf_form_name (die->attrs[i].form)); | |
d97bc12b | 22951 | |
c906108c SS |
22952 | switch (die->attrs[i].form) |
22953 | { | |
c906108c | 22954 | case DW_FORM_addr: |
336d760d | 22955 | case DW_FORM_addrx: |
3019eac3 | 22956 | case DW_FORM_GNU_addr_index: |
d97bc12b | 22957 | fprintf_unfiltered (f, "address: "); |
5af949e3 | 22958 | fputs_filtered (hex_string (DW_ADDR (&die->attrs[i])), f); |
c906108c SS |
22959 | break; |
22960 | case DW_FORM_block2: | |
22961 | case DW_FORM_block4: | |
22962 | case DW_FORM_block: | |
22963 | case DW_FORM_block1: | |
56eb65bd SP |
22964 | fprintf_unfiltered (f, "block: size %s", |
22965 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
c906108c | 22966 | break; |
2dc7f7b3 | 22967 | case DW_FORM_exprloc: |
56eb65bd SP |
22968 | fprintf_unfiltered (f, "expression: size %s", |
22969 | pulongest (DW_BLOCK (&die->attrs[i])->size)); | |
2dc7f7b3 | 22970 | break; |
0224619f JK |
22971 | case DW_FORM_data16: |
22972 | fprintf_unfiltered (f, "constant of 16 bytes"); | |
22973 | break; | |
4568ecf9 DE |
22974 | case DW_FORM_ref_addr: |
22975 | fprintf_unfiltered (f, "ref address: "); | |
22976 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22977 | break; | |
36586728 TT |
22978 | case DW_FORM_GNU_ref_alt: |
22979 | fprintf_unfiltered (f, "alt ref address: "); | |
22980 | fputs_filtered (hex_string (DW_UNSND (&die->attrs[i])), f); | |
22981 | break; | |
10b3939b DJ |
22982 | case DW_FORM_ref1: |
22983 | case DW_FORM_ref2: | |
22984 | case DW_FORM_ref4: | |
4568ecf9 DE |
22985 | case DW_FORM_ref8: |
22986 | case DW_FORM_ref_udata: | |
d97bc12b | 22987 | fprintf_unfiltered (f, "constant ref: 0x%lx (adjusted)", |
4568ecf9 | 22988 | (long) (DW_UNSND (&die->attrs[i]))); |
10b3939b | 22989 | break; |
c906108c SS |
22990 | case DW_FORM_data1: |
22991 | case DW_FORM_data2: | |
22992 | case DW_FORM_data4: | |
ce5d95e1 | 22993 | case DW_FORM_data8: |
c906108c SS |
22994 | case DW_FORM_udata: |
22995 | case DW_FORM_sdata: | |
43bbcdc2 PH |
22996 | fprintf_unfiltered (f, "constant: %s", |
22997 | pulongest (DW_UNSND (&die->attrs[i]))); | |
c906108c | 22998 | break; |
2dc7f7b3 TT |
22999 | case DW_FORM_sec_offset: |
23000 | fprintf_unfiltered (f, "section offset: %s", | |
23001 | pulongest (DW_UNSND (&die->attrs[i]))); | |
23002 | break; | |
55f1336d | 23003 | case DW_FORM_ref_sig8: |
ac9ec31b DE |
23004 | fprintf_unfiltered (f, "signature: %s", |
23005 | hex_string (DW_SIGNATURE (&die->attrs[i]))); | |
348e048f | 23006 | break; |
c906108c | 23007 | case DW_FORM_string: |
4bdf3d34 | 23008 | case DW_FORM_strp: |
43988095 | 23009 | case DW_FORM_line_strp: |
cf532bd1 | 23010 | case DW_FORM_strx: |
3019eac3 | 23011 | case DW_FORM_GNU_str_index: |
36586728 | 23012 | case DW_FORM_GNU_strp_alt: |
8285870a | 23013 | fprintf_unfiltered (f, "string: \"%s\" (%s canonicalized)", |
c906108c | 23014 | DW_STRING (&die->attrs[i]) |
8285870a JK |
23015 | ? DW_STRING (&die->attrs[i]) : "", |
23016 | DW_STRING_IS_CANONICAL (&die->attrs[i]) ? "is" : "not"); | |
c906108c SS |
23017 | break; |
23018 | case DW_FORM_flag: | |
23019 | if (DW_UNSND (&die->attrs[i])) | |
d97bc12b | 23020 | fprintf_unfiltered (f, "flag: TRUE"); |
c906108c | 23021 | else |
d97bc12b | 23022 | fprintf_unfiltered (f, "flag: FALSE"); |
c906108c | 23023 | break; |
2dc7f7b3 TT |
23024 | case DW_FORM_flag_present: |
23025 | fprintf_unfiltered (f, "flag: TRUE"); | |
23026 | break; | |
a8329558 | 23027 | case DW_FORM_indirect: |
0963b4bd MS |
23028 | /* The reader will have reduced the indirect form to |
23029 | the "base form" so this form should not occur. */ | |
3e43a32a MS |
23030 | fprintf_unfiltered (f, |
23031 | "unexpected attribute form: DW_FORM_indirect"); | |
a8329558 | 23032 | break; |
663c44ac JK |
23033 | case DW_FORM_implicit_const: |
23034 | fprintf_unfiltered (f, "constant: %s", | |
23035 | plongest (DW_SND (&die->attrs[i]))); | |
23036 | break; | |
c906108c | 23037 | default: |
d97bc12b | 23038 | fprintf_unfiltered (f, "unsupported attribute form: %d.", |
c5aa993b | 23039 | die->attrs[i].form); |
d97bc12b | 23040 | break; |
c906108c | 23041 | } |
d97bc12b | 23042 | fprintf_unfiltered (f, "\n"); |
c906108c SS |
23043 | } |
23044 | } | |
23045 | ||
f9aca02d | 23046 | static void |
d97bc12b | 23047 | dump_die_for_error (struct die_info *die) |
c906108c | 23048 | { |
d97bc12b DE |
23049 | dump_die_shallow (gdb_stderr, 0, die); |
23050 | } | |
23051 | ||
23052 | static void | |
23053 | dump_die_1 (struct ui_file *f, int level, int max_level, struct die_info *die) | |
23054 | { | |
23055 | int indent = level * 4; | |
23056 | ||
23057 | gdb_assert (die != NULL); | |
23058 | ||
23059 | if (level >= max_level) | |
23060 | return; | |
23061 | ||
23062 | dump_die_shallow (f, indent, die); | |
23063 | ||
23064 | if (die->child != NULL) | |
c906108c | 23065 | { |
d97bc12b DE |
23066 | print_spaces (indent, f); |
23067 | fprintf_unfiltered (f, " Children:"); | |
23068 | if (level + 1 < max_level) | |
23069 | { | |
23070 | fprintf_unfiltered (f, "\n"); | |
23071 | dump_die_1 (f, level + 1, max_level, die->child); | |
23072 | } | |
23073 | else | |
23074 | { | |
3e43a32a MS |
23075 | fprintf_unfiltered (f, |
23076 | " [not printed, max nesting level reached]\n"); | |
d97bc12b DE |
23077 | } |
23078 | } | |
23079 | ||
23080 | if (die->sibling != NULL && level > 0) | |
23081 | { | |
23082 | dump_die_1 (f, level, max_level, die->sibling); | |
c906108c SS |
23083 | } |
23084 | } | |
23085 | ||
d97bc12b DE |
23086 | /* This is called from the pdie macro in gdbinit.in. |
23087 | It's not static so gcc will keep a copy callable from gdb. */ | |
23088 | ||
23089 | void | |
23090 | dump_die (struct die_info *die, int max_level) | |
23091 | { | |
23092 | dump_die_1 (gdb_stdlog, 0, max_level, die); | |
23093 | } | |
23094 | ||
f9aca02d | 23095 | static void |
51545339 | 23096 | store_in_ref_table (struct die_info *die, struct dwarf2_cu *cu) |
c906108c | 23097 | { |
51545339 | 23098 | void **slot; |
c906108c | 23099 | |
9c541725 PA |
23100 | slot = htab_find_slot_with_hash (cu->die_hash, die, |
23101 | to_underlying (die->sect_off), | |
b64f50a1 | 23102 | INSERT); |
51545339 DJ |
23103 | |
23104 | *slot = die; | |
c906108c SS |
23105 | } |
23106 | ||
b64f50a1 JK |
23107 | /* Return DIE offset of ATTR. Return 0 with complaint if ATTR is not of the |
23108 | required kind. */ | |
23109 | ||
23110 | static sect_offset | |
ff39bb5e | 23111 | dwarf2_get_ref_die_offset (const struct attribute *attr) |
93311388 | 23112 | { |
7771576e | 23113 | if (attr_form_is_ref (attr)) |
9c541725 | 23114 | return (sect_offset) DW_UNSND (attr); |
93311388 | 23115 | |
b98664d3 | 23116 | complaint (_("unsupported die ref attribute form: '%s'"), |
93311388 | 23117 | dwarf_form_name (attr->form)); |
9c541725 | 23118 | return {}; |
c906108c SS |
23119 | } |
23120 | ||
43bbcdc2 PH |
23121 | /* Return the constant value held by ATTR. Return DEFAULT_VALUE if |
23122 | * the value held by the attribute is not constant. */ | |
a02abb62 | 23123 | |
43bbcdc2 | 23124 | static LONGEST |
ff39bb5e | 23125 | dwarf2_get_attr_constant_value (const struct attribute *attr, int default_value) |
a02abb62 | 23126 | { |
663c44ac | 23127 | if (attr->form == DW_FORM_sdata || attr->form == DW_FORM_implicit_const) |
a02abb62 JB |
23128 | return DW_SND (attr); |
23129 | else if (attr->form == DW_FORM_udata | |
23130 | || attr->form == DW_FORM_data1 | |
23131 | || attr->form == DW_FORM_data2 | |
23132 | || attr->form == DW_FORM_data4 | |
23133 | || attr->form == DW_FORM_data8) | |
23134 | return DW_UNSND (attr); | |
23135 | else | |
23136 | { | |
0224619f | 23137 | /* For DW_FORM_data16 see attr_form_is_constant. */ |
b98664d3 | 23138 | complaint (_("Attribute value is not a constant (%s)"), |
a02abb62 JB |
23139 | dwarf_form_name (attr->form)); |
23140 | return default_value; | |
23141 | } | |
23142 | } | |
23143 | ||
348e048f DE |
23144 | /* Follow reference or signature attribute ATTR of SRC_DIE. |
23145 | On entry *REF_CU is the CU of SRC_DIE. | |
23146 | On exit *REF_CU is the CU of the result. */ | |
23147 | ||
23148 | static struct die_info * | |
ff39bb5e | 23149 | follow_die_ref_or_sig (struct die_info *src_die, const struct attribute *attr, |
348e048f DE |
23150 | struct dwarf2_cu **ref_cu) |
23151 | { | |
23152 | struct die_info *die; | |
23153 | ||
7771576e | 23154 | if (attr_form_is_ref (attr)) |
348e048f | 23155 | die = follow_die_ref (src_die, attr, ref_cu); |
55f1336d | 23156 | else if (attr->form == DW_FORM_ref_sig8) |
348e048f DE |
23157 | die = follow_die_sig (src_die, attr, ref_cu); |
23158 | else | |
23159 | { | |
23160 | dump_die_for_error (src_die); | |
23161 | error (_("Dwarf Error: Expected reference attribute [in module %s]"), | |
518817b3 | 23162 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
348e048f DE |
23163 | } |
23164 | ||
23165 | return die; | |
03dd20cc DJ |
23166 | } |
23167 | ||
5c631832 | 23168 | /* Follow reference OFFSET. |
673bfd45 DE |
23169 | On entry *REF_CU is the CU of the source die referencing OFFSET. |
23170 | On exit *REF_CU is the CU of the result. | |
23171 | Returns NULL if OFFSET is invalid. */ | |
f504f079 | 23172 | |
f9aca02d | 23173 | static struct die_info * |
9c541725 | 23174 | follow_die_offset (sect_offset sect_off, int offset_in_dwz, |
36586728 | 23175 | struct dwarf2_cu **ref_cu) |
c906108c | 23176 | { |
10b3939b | 23177 | struct die_info temp_die; |
f2f0e013 | 23178 | struct dwarf2_cu *target_cu, *cu = *ref_cu; |
518817b3 SM |
23179 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23180 | = cu->per_cu->dwarf2_per_objfile; | |
10b3939b | 23181 | |
348e048f DE |
23182 | gdb_assert (cu->per_cu != NULL); |
23183 | ||
98bfdba5 PA |
23184 | target_cu = cu; |
23185 | ||
3019eac3 | 23186 | if (cu->per_cu->is_debug_types) |
348e048f DE |
23187 | { |
23188 | /* .debug_types CUs cannot reference anything outside their CU. | |
23189 | If they need to, they have to reference a signatured type via | |
55f1336d | 23190 | DW_FORM_ref_sig8. */ |
9c541725 | 23191 | if (!offset_in_cu_p (&cu->header, sect_off)) |
5c631832 | 23192 | return NULL; |
348e048f | 23193 | } |
36586728 | 23194 | else if (offset_in_dwz != cu->per_cu->is_dwz |
9c541725 | 23195 | || !offset_in_cu_p (&cu->header, sect_off)) |
10b3939b DJ |
23196 | { |
23197 | struct dwarf2_per_cu_data *per_cu; | |
9a619af0 | 23198 | |
9c541725 | 23199 | per_cu = dwarf2_find_containing_comp_unit (sect_off, offset_in_dwz, |
ed2dc618 | 23200 | dwarf2_per_objfile); |
03dd20cc DJ |
23201 | |
23202 | /* If necessary, add it to the queue and load its DIEs. */ | |
95554aad | 23203 | if (maybe_queue_comp_unit (cu, per_cu, cu->language)) |
58f0c718 | 23204 | load_full_comp_unit (per_cu, false, cu->language); |
03dd20cc | 23205 | |
10b3939b DJ |
23206 | target_cu = per_cu->cu; |
23207 | } | |
98bfdba5 PA |
23208 | else if (cu->dies == NULL) |
23209 | { | |
23210 | /* We're loading full DIEs during partial symbol reading. */ | |
23211 | gdb_assert (dwarf2_per_objfile->reading_partial_symbols); | |
58f0c718 | 23212 | load_full_comp_unit (cu->per_cu, false, language_minimal); |
98bfdba5 | 23213 | } |
c906108c | 23214 | |
f2f0e013 | 23215 | *ref_cu = target_cu; |
9c541725 | 23216 | temp_die.sect_off = sect_off; |
c24bdb02 KS |
23217 | |
23218 | if (target_cu != cu) | |
23219 | target_cu->ancestor = cu; | |
23220 | ||
9a3c8263 | 23221 | return (struct die_info *) htab_find_with_hash (target_cu->die_hash, |
9c541725 PA |
23222 | &temp_die, |
23223 | to_underlying (sect_off)); | |
5c631832 | 23224 | } |
10b3939b | 23225 | |
5c631832 JK |
23226 | /* Follow reference attribute ATTR of SRC_DIE. |
23227 | On entry *REF_CU is the CU of SRC_DIE. | |
23228 | On exit *REF_CU is the CU of the result. */ | |
23229 | ||
23230 | static struct die_info * | |
ff39bb5e | 23231 | follow_die_ref (struct die_info *src_die, const struct attribute *attr, |
5c631832 JK |
23232 | struct dwarf2_cu **ref_cu) |
23233 | { | |
9c541725 | 23234 | sect_offset sect_off = dwarf2_get_ref_die_offset (attr); |
5c631832 JK |
23235 | struct dwarf2_cu *cu = *ref_cu; |
23236 | struct die_info *die; | |
23237 | ||
9c541725 | 23238 | die = follow_die_offset (sect_off, |
36586728 TT |
23239 | (attr->form == DW_FORM_GNU_ref_alt |
23240 | || cu->per_cu->is_dwz), | |
23241 | ref_cu); | |
5c631832 | 23242 | if (!die) |
9d8780f0 SM |
23243 | error (_("Dwarf Error: Cannot find DIE at %s referenced from DIE " |
23244 | "at %s [in module %s]"), | |
23245 | sect_offset_str (sect_off), sect_offset_str (src_die->sect_off), | |
518817b3 | 23246 | objfile_name (cu->per_cu->dwarf2_per_objfile->objfile)); |
348e048f | 23247 | |
5c631832 JK |
23248 | return die; |
23249 | } | |
23250 | ||
9c541725 | 23251 | /* Return DWARF block referenced by DW_AT_location of DIE at SECT_OFF at PER_CU. |
d83e736b | 23252 | Returned value is intended for DW_OP_call*. Returned |
e3b94546 SM |
23253 | dwarf2_locexpr_baton->data has lifetime of |
23254 | PER_CU->DWARF2_PER_OBJFILE->OBJFILE. */ | |
5c631832 JK |
23255 | |
23256 | struct dwarf2_locexpr_baton | |
9c541725 | 23257 | dwarf2_fetch_die_loc_sect_off (sect_offset sect_off, |
8b9737bf TT |
23258 | struct dwarf2_per_cu_data *per_cu, |
23259 | CORE_ADDR (*get_frame_pc) (void *baton), | |
e4a62c65 | 23260 | void *baton, bool resolve_abstract_p) |
5c631832 | 23261 | { |
918dd910 | 23262 | struct dwarf2_cu *cu; |
5c631832 JK |
23263 | struct die_info *die; |
23264 | struct attribute *attr; | |
23265 | struct dwarf2_locexpr_baton retval; | |
12359b5e SM |
23266 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
23267 | struct objfile *objfile = dwarf2_per_objfile->objfile; | |
8cf6f0b1 | 23268 | |
918dd910 | 23269 | if (per_cu->cu == NULL) |
58f0c718 | 23270 | load_cu (per_cu, false); |
918dd910 | 23271 | cu = per_cu->cu; |
cc12ce38 DE |
23272 | if (cu == NULL) |
23273 | { | |
23274 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23275 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23276 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23277 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23278 | } |
918dd910 | 23279 | |
9c541725 | 23280 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
5c631832 | 23281 | if (!die) |
9d8780f0 SM |
23282 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23283 | sect_offset_str (sect_off), objfile_name (objfile)); | |
5c631832 JK |
23284 | |
23285 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
e4a62c65 TV |
23286 | if (!attr && resolve_abstract_p |
23287 | && (dwarf2_per_objfile->abstract_to_concrete.find (die) | |
23288 | != dwarf2_per_objfile->abstract_to_concrete.end ())) | |
23289 | { | |
23290 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23291 | ||
23292 | for (const auto &cand : dwarf2_per_objfile->abstract_to_concrete[die]) | |
23293 | { | |
23294 | if (!cand->parent | |
23295 | || cand->parent->tag != DW_TAG_subprogram) | |
23296 | continue; | |
23297 | ||
23298 | CORE_ADDR pc_low, pc_high; | |
23299 | get_scope_pc_bounds (cand->parent, &pc_low, &pc_high, cu); | |
23300 | if (pc_low == ((CORE_ADDR) -1) | |
23301 | || !(pc_low <= pc && pc < pc_high)) | |
23302 | continue; | |
23303 | ||
23304 | die = cand; | |
23305 | attr = dwarf2_attr (die, DW_AT_location, cu); | |
23306 | break; | |
23307 | } | |
23308 | } | |
23309 | ||
5c631832 JK |
23310 | if (!attr) |
23311 | { | |
e103e986 JK |
23312 | /* DWARF: "If there is no such attribute, then there is no effect.". |
23313 | DATA is ignored if SIZE is 0. */ | |
5c631832 | 23314 | |
e103e986 | 23315 | retval.data = NULL; |
5c631832 JK |
23316 | retval.size = 0; |
23317 | } | |
8cf6f0b1 TT |
23318 | else if (attr_form_is_section_offset (attr)) |
23319 | { | |
23320 | struct dwarf2_loclist_baton loclist_baton; | |
23321 | CORE_ADDR pc = (*get_frame_pc) (baton); | |
23322 | size_t size; | |
23323 | ||
23324 | fill_in_loclist_baton (cu, &loclist_baton, attr); | |
23325 | ||
23326 | retval.data = dwarf2_find_location_expression (&loclist_baton, | |
23327 | &size, pc); | |
23328 | retval.size = size; | |
23329 | } | |
5c631832 JK |
23330 | else |
23331 | { | |
23332 | if (!attr_form_is_block (attr)) | |
9d8780f0 | 23333 | error (_("Dwarf Error: DIE at %s referenced in module %s " |
5c631832 | 23334 | "is neither DW_FORM_block* nor DW_FORM_exprloc"), |
9d8780f0 | 23335 | sect_offset_str (sect_off), objfile_name (objfile)); |
5c631832 JK |
23336 | |
23337 | retval.data = DW_BLOCK (attr)->data; | |
23338 | retval.size = DW_BLOCK (attr)->size; | |
23339 | } | |
23340 | retval.per_cu = cu->per_cu; | |
918dd910 | 23341 | |
ed2dc618 | 23342 | age_cached_comp_units (dwarf2_per_objfile); |
918dd910 | 23343 | |
5c631832 | 23344 | return retval; |
348e048f DE |
23345 | } |
23346 | ||
8b9737bf TT |
23347 | /* Like dwarf2_fetch_die_loc_sect_off, but take a CU |
23348 | offset. */ | |
23349 | ||
23350 | struct dwarf2_locexpr_baton | |
23351 | dwarf2_fetch_die_loc_cu_off (cu_offset offset_in_cu, | |
23352 | struct dwarf2_per_cu_data *per_cu, | |
23353 | CORE_ADDR (*get_frame_pc) (void *baton), | |
23354 | void *baton) | |
23355 | { | |
9c541725 | 23356 | sect_offset sect_off = per_cu->sect_off + to_underlying (offset_in_cu); |
8b9737bf | 23357 | |
9c541725 | 23358 | return dwarf2_fetch_die_loc_sect_off (sect_off, per_cu, get_frame_pc, baton); |
8b9737bf TT |
23359 | } |
23360 | ||
b6807d98 TT |
23361 | /* Write a constant of a given type as target-ordered bytes into |
23362 | OBSTACK. */ | |
23363 | ||
23364 | static const gdb_byte * | |
23365 | write_constant_as_bytes (struct obstack *obstack, | |
23366 | enum bfd_endian byte_order, | |
23367 | struct type *type, | |
23368 | ULONGEST value, | |
23369 | LONGEST *len) | |
23370 | { | |
23371 | gdb_byte *result; | |
23372 | ||
23373 | *len = TYPE_LENGTH (type); | |
224c3ddb | 23374 | result = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23375 | store_unsigned_integer (result, *len, byte_order, value); |
23376 | ||
23377 | return result; | |
23378 | } | |
23379 | ||
23380 | /* If the DIE at OFFSET in PER_CU has a DW_AT_const_value, return a | |
23381 | pointer to the constant bytes and set LEN to the length of the | |
23382 | data. If memory is needed, allocate it on OBSTACK. If the DIE | |
23383 | does not have a DW_AT_const_value, return NULL. */ | |
23384 | ||
23385 | const gdb_byte * | |
9c541725 | 23386 | dwarf2_fetch_constant_bytes (sect_offset sect_off, |
b6807d98 TT |
23387 | struct dwarf2_per_cu_data *per_cu, |
23388 | struct obstack *obstack, | |
23389 | LONGEST *len) | |
23390 | { | |
23391 | struct dwarf2_cu *cu; | |
23392 | struct die_info *die; | |
23393 | struct attribute *attr; | |
23394 | const gdb_byte *result = NULL; | |
23395 | struct type *type; | |
23396 | LONGEST value; | |
23397 | enum bfd_endian byte_order; | |
e3b94546 | 23398 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
b6807d98 | 23399 | |
b6807d98 | 23400 | if (per_cu->cu == NULL) |
58f0c718 | 23401 | load_cu (per_cu, false); |
b6807d98 | 23402 | cu = per_cu->cu; |
cc12ce38 DE |
23403 | if (cu == NULL) |
23404 | { | |
23405 | /* We shouldn't get here for a dummy CU, but don't crash on the user. | |
23406 | Instead just throw an error, not much else we can do. */ | |
9d8780f0 SM |
23407 | error (_("Dwarf Error: Dummy CU at %s referenced in module %s"), |
23408 | sect_offset_str (sect_off), objfile_name (objfile)); | |
cc12ce38 | 23409 | } |
b6807d98 | 23410 | |
9c541725 | 23411 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
b6807d98 | 23412 | if (!die) |
9d8780f0 SM |
23413 | error (_("Dwarf Error: Cannot find DIE at %s referenced in module %s"), |
23414 | sect_offset_str (sect_off), objfile_name (objfile)); | |
b6807d98 TT |
23415 | |
23416 | attr = dwarf2_attr (die, DW_AT_const_value, cu); | |
23417 | if (attr == NULL) | |
23418 | return NULL; | |
23419 | ||
e3b94546 | 23420 | byte_order = (bfd_big_endian (objfile->obfd) |
b6807d98 TT |
23421 | ? BFD_ENDIAN_BIG : BFD_ENDIAN_LITTLE); |
23422 | ||
23423 | switch (attr->form) | |
23424 | { | |
23425 | case DW_FORM_addr: | |
336d760d | 23426 | case DW_FORM_addrx: |
b6807d98 TT |
23427 | case DW_FORM_GNU_addr_index: |
23428 | { | |
23429 | gdb_byte *tem; | |
23430 | ||
23431 | *len = cu->header.addr_size; | |
224c3ddb | 23432 | tem = (gdb_byte *) obstack_alloc (obstack, *len); |
b6807d98 TT |
23433 | store_unsigned_integer (tem, *len, byte_order, DW_ADDR (attr)); |
23434 | result = tem; | |
23435 | } | |
23436 | break; | |
23437 | case DW_FORM_string: | |
23438 | case DW_FORM_strp: | |
cf532bd1 | 23439 | case DW_FORM_strx: |
b6807d98 TT |
23440 | case DW_FORM_GNU_str_index: |
23441 | case DW_FORM_GNU_strp_alt: | |
23442 | /* DW_STRING is already allocated on the objfile obstack, point | |
23443 | directly to it. */ | |
23444 | result = (const gdb_byte *) DW_STRING (attr); | |
23445 | *len = strlen (DW_STRING (attr)); | |
23446 | break; | |
23447 | case DW_FORM_block1: | |
23448 | case DW_FORM_block2: | |
23449 | case DW_FORM_block4: | |
23450 | case DW_FORM_block: | |
23451 | case DW_FORM_exprloc: | |
0224619f | 23452 | case DW_FORM_data16: |
b6807d98 TT |
23453 | result = DW_BLOCK (attr)->data; |
23454 | *len = DW_BLOCK (attr)->size; | |
23455 | break; | |
23456 | ||
23457 | /* The DW_AT_const_value attributes are supposed to carry the | |
23458 | symbol's value "represented as it would be on the target | |
23459 | architecture." By the time we get here, it's already been | |
23460 | converted to host endianness, so we just need to sign- or | |
23461 | zero-extend it as appropriate. */ | |
23462 | case DW_FORM_data1: | |
23463 | type = die_type (die, cu); | |
23464 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 8); | |
23465 | if (result == NULL) | |
23466 | result = write_constant_as_bytes (obstack, byte_order, | |
23467 | type, value, len); | |
23468 | break; | |
23469 | case DW_FORM_data2: | |
23470 | type = die_type (die, cu); | |
23471 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 16); | |
23472 | if (result == NULL) | |
23473 | result = write_constant_as_bytes (obstack, byte_order, | |
23474 | type, value, len); | |
23475 | break; | |
23476 | case DW_FORM_data4: | |
23477 | type = die_type (die, cu); | |
23478 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 32); | |
23479 | if (result == NULL) | |
23480 | result = write_constant_as_bytes (obstack, byte_order, | |
23481 | type, value, len); | |
23482 | break; | |
23483 | case DW_FORM_data8: | |
23484 | type = die_type (die, cu); | |
23485 | result = dwarf2_const_value_data (attr, obstack, cu, &value, 64); | |
23486 | if (result == NULL) | |
23487 | result = write_constant_as_bytes (obstack, byte_order, | |
23488 | type, value, len); | |
23489 | break; | |
23490 | ||
23491 | case DW_FORM_sdata: | |
663c44ac | 23492 | case DW_FORM_implicit_const: |
b6807d98 TT |
23493 | type = die_type (die, cu); |
23494 | result = write_constant_as_bytes (obstack, byte_order, | |
23495 | type, DW_SND (attr), len); | |
23496 | break; | |
23497 | ||
23498 | case DW_FORM_udata: | |
23499 | type = die_type (die, cu); | |
23500 | result = write_constant_as_bytes (obstack, byte_order, | |
23501 | type, DW_UNSND (attr), len); | |
23502 | break; | |
23503 | ||
23504 | default: | |
b98664d3 | 23505 | complaint (_("unsupported const value attribute form: '%s'"), |
b6807d98 TT |
23506 | dwarf_form_name (attr->form)); |
23507 | break; | |
23508 | } | |
23509 | ||
23510 | return result; | |
23511 | } | |
23512 | ||
7942e96e AA |
23513 | /* Return the type of the die at OFFSET in PER_CU. Return NULL if no |
23514 | valid type for this die is found. */ | |
23515 | ||
23516 | struct type * | |
9c541725 | 23517 | dwarf2_fetch_die_type_sect_off (sect_offset sect_off, |
7942e96e AA |
23518 | struct dwarf2_per_cu_data *per_cu) |
23519 | { | |
23520 | struct dwarf2_cu *cu; | |
23521 | struct die_info *die; | |
23522 | ||
7942e96e | 23523 | if (per_cu->cu == NULL) |
58f0c718 | 23524 | load_cu (per_cu, false); |
7942e96e AA |
23525 | cu = per_cu->cu; |
23526 | if (!cu) | |
23527 | return NULL; | |
23528 | ||
9c541725 | 23529 | die = follow_die_offset (sect_off, per_cu->is_dwz, &cu); |
7942e96e AA |
23530 | if (!die) |
23531 | return NULL; | |
23532 | ||
23533 | return die_type (die, cu); | |
23534 | } | |
23535 | ||
8a9b8146 TT |
23536 | /* Return the type of the DIE at DIE_OFFSET in the CU named by |
23537 | PER_CU. */ | |
23538 | ||
23539 | struct type * | |
b64f50a1 | 23540 | dwarf2_get_die_type (cu_offset die_offset, |
8a9b8146 TT |
23541 | struct dwarf2_per_cu_data *per_cu) |
23542 | { | |
9c541725 | 23543 | sect_offset die_offset_sect = per_cu->sect_off + to_underlying (die_offset); |
b64f50a1 | 23544 | return get_die_type_at_offset (die_offset_sect, per_cu); |
8a9b8146 TT |
23545 | } |
23546 | ||
ac9ec31b | 23547 | /* Follow type unit SIG_TYPE referenced by SRC_DIE. |
348e048f | 23548 | On entry *REF_CU is the CU of SRC_DIE. |
ac9ec31b DE |
23549 | On exit *REF_CU is the CU of the result. |
23550 | Returns NULL if the referenced DIE isn't found. */ | |
348e048f DE |
23551 | |
23552 | static struct die_info * | |
ac9ec31b DE |
23553 | follow_die_sig_1 (struct die_info *src_die, struct signatured_type *sig_type, |
23554 | struct dwarf2_cu **ref_cu) | |
348e048f | 23555 | { |
348e048f | 23556 | struct die_info temp_die; |
c24bdb02 | 23557 | struct dwarf2_cu *sig_cu, *cu = *ref_cu; |
348e048f DE |
23558 | struct die_info *die; |
23559 | ||
ac9ec31b DE |
23560 | /* While it might be nice to assert sig_type->type == NULL here, |
23561 | we can get here for DW_AT_imported_declaration where we need | |
23562 | the DIE not the type. */ | |
348e048f DE |
23563 | |
23564 | /* If necessary, add it to the queue and load its DIEs. */ | |
23565 | ||
95554aad | 23566 | if (maybe_queue_comp_unit (*ref_cu, &sig_type->per_cu, language_minimal)) |
a0f42c21 | 23567 | read_signatured_type (sig_type); |
348e048f | 23568 | |
348e048f | 23569 | sig_cu = sig_type->per_cu.cu; |
69d751e3 | 23570 | gdb_assert (sig_cu != NULL); |
9c541725 PA |
23571 | gdb_assert (to_underlying (sig_type->type_offset_in_section) != 0); |
23572 | temp_die.sect_off = sig_type->type_offset_in_section; | |
9a3c8263 | 23573 | die = (struct die_info *) htab_find_with_hash (sig_cu->die_hash, &temp_die, |
9c541725 | 23574 | to_underlying (temp_die.sect_off)); |
348e048f DE |
23575 | if (die) |
23576 | { | |
ed2dc618 | 23577 | struct dwarf2_per_objfile *dwarf2_per_objfile |
518817b3 | 23578 | = (*ref_cu)->per_cu->dwarf2_per_objfile; |
ed2dc618 | 23579 | |
796a7ff8 DE |
23580 | /* For .gdb_index version 7 keep track of included TUs. |
23581 | http://sourceware.org/bugzilla/show_bug.cgi?id=15021. */ | |
23582 | if (dwarf2_per_objfile->index_table != NULL | |
23583 | && dwarf2_per_objfile->index_table->version <= 7) | |
23584 | { | |
23585 | VEC_safe_push (dwarf2_per_cu_ptr, | |
23586 | (*ref_cu)->per_cu->imported_symtabs, | |
23587 | sig_cu->per_cu); | |
23588 | } | |
23589 | ||
348e048f | 23590 | *ref_cu = sig_cu; |
c24bdb02 KS |
23591 | if (sig_cu != cu) |
23592 | sig_cu->ancestor = cu; | |
23593 | ||
348e048f DE |
23594 | return die; |
23595 | } | |
23596 | ||
ac9ec31b DE |
23597 | return NULL; |
23598 | } | |
23599 | ||
23600 | /* Follow signatured type referenced by ATTR in SRC_DIE. | |
23601 | On entry *REF_CU is the CU of SRC_DIE. | |
23602 | On exit *REF_CU is the CU of the result. | |
23603 | The result is the DIE of the type. | |
23604 | If the referenced type cannot be found an error is thrown. */ | |
23605 | ||
23606 | static struct die_info * | |
ff39bb5e | 23607 | follow_die_sig (struct die_info *src_die, const struct attribute *attr, |
ac9ec31b DE |
23608 | struct dwarf2_cu **ref_cu) |
23609 | { | |
23610 | ULONGEST signature = DW_SIGNATURE (attr); | |
23611 | struct signatured_type *sig_type; | |
23612 | struct die_info *die; | |
23613 | ||
23614 | gdb_assert (attr->form == DW_FORM_ref_sig8); | |
23615 | ||
a2ce51a0 | 23616 | sig_type = lookup_signatured_type (*ref_cu, signature); |
ac9ec31b DE |
23617 | /* sig_type will be NULL if the signatured type is missing from |
23618 | the debug info. */ | |
23619 | if (sig_type == NULL) | |
23620 | { | |
23621 | error (_("Dwarf Error: Cannot find signatured DIE %s referenced" | |
9d8780f0 SM |
23622 | " from DIE at %s [in module %s]"), |
23623 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23624 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23625 | } |
23626 | ||
23627 | die = follow_die_sig_1 (src_die, sig_type, ref_cu); | |
23628 | if (die == NULL) | |
23629 | { | |
23630 | dump_die_for_error (src_die); | |
23631 | error (_("Dwarf Error: Problem reading signatured DIE %s referenced" | |
9d8780f0 SM |
23632 | " from DIE at %s [in module %s]"), |
23633 | hex_string (signature), sect_offset_str (src_die->sect_off), | |
518817b3 | 23634 | objfile_name ((*ref_cu)->per_cu->dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23635 | } |
23636 | ||
23637 | return die; | |
23638 | } | |
23639 | ||
23640 | /* Get the type specified by SIGNATURE referenced in DIE/CU, | |
23641 | reading in and processing the type unit if necessary. */ | |
23642 | ||
23643 | static struct type * | |
23644 | get_signatured_type (struct die_info *die, ULONGEST signature, | |
23645 | struct dwarf2_cu *cu) | |
23646 | { | |
518817b3 SM |
23647 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23648 | = cu->per_cu->dwarf2_per_objfile; | |
ac9ec31b DE |
23649 | struct signatured_type *sig_type; |
23650 | struct dwarf2_cu *type_cu; | |
23651 | struct die_info *type_die; | |
23652 | struct type *type; | |
23653 | ||
a2ce51a0 | 23654 | sig_type = lookup_signatured_type (cu, signature); |
ac9ec31b DE |
23655 | /* sig_type will be NULL if the signatured type is missing from |
23656 | the debug info. */ | |
23657 | if (sig_type == NULL) | |
23658 | { | |
b98664d3 | 23659 | complaint (_("Dwarf Error: Cannot find signatured DIE %s referenced" |
9d8780f0 SM |
23660 | " from DIE at %s [in module %s]"), |
23661 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23662 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23663 | return build_error_marker_type (cu, die); |
23664 | } | |
23665 | ||
23666 | /* If we already know the type we're done. */ | |
23667 | if (sig_type->type != NULL) | |
23668 | return sig_type->type; | |
23669 | ||
23670 | type_cu = cu; | |
23671 | type_die = follow_die_sig_1 (die, sig_type, &type_cu); | |
23672 | if (type_die != NULL) | |
23673 | { | |
23674 | /* N.B. We need to call get_die_type to ensure only one type for this DIE | |
23675 | is created. This is important, for example, because for c++ classes | |
23676 | we need TYPE_NAME set which is only done by new_symbol. Blech. */ | |
23677 | type = read_type_die (type_die, type_cu); | |
23678 | if (type == NULL) | |
23679 | { | |
b98664d3 | 23680 | complaint (_("Dwarf Error: Cannot build signatured type %s" |
9d8780f0 SM |
23681 | " referenced from DIE at %s [in module %s]"), |
23682 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23683 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23684 | type = build_error_marker_type (cu, die); |
23685 | } | |
23686 | } | |
23687 | else | |
23688 | { | |
b98664d3 | 23689 | complaint (_("Dwarf Error: Problem reading signatured DIE %s referenced" |
9d8780f0 SM |
23690 | " from DIE at %s [in module %s]"), |
23691 | hex_string (signature), sect_offset_str (die->sect_off), | |
4262abfb | 23692 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23693 | type = build_error_marker_type (cu, die); |
23694 | } | |
23695 | sig_type->type = type; | |
23696 | ||
23697 | return type; | |
23698 | } | |
23699 | ||
23700 | /* Get the type specified by the DW_AT_signature ATTR in DIE/CU, | |
23701 | reading in and processing the type unit if necessary. */ | |
23702 | ||
23703 | static struct type * | |
ff39bb5e | 23704 | get_DW_AT_signature_type (struct die_info *die, const struct attribute *attr, |
b385a60d | 23705 | struct dwarf2_cu *cu) /* ARI: editCase function */ |
ac9ec31b DE |
23706 | { |
23707 | /* Yes, DW_AT_signature can use a non-ref_sig8 reference. */ | |
7771576e | 23708 | if (attr_form_is_ref (attr)) |
ac9ec31b DE |
23709 | { |
23710 | struct dwarf2_cu *type_cu = cu; | |
23711 | struct die_info *type_die = follow_die_ref (die, attr, &type_cu); | |
23712 | ||
23713 | return read_type_die (type_die, type_cu); | |
23714 | } | |
23715 | else if (attr->form == DW_FORM_ref_sig8) | |
23716 | { | |
23717 | return get_signatured_type (die, DW_SIGNATURE (attr), cu); | |
23718 | } | |
23719 | else | |
23720 | { | |
518817b3 SM |
23721 | struct dwarf2_per_objfile *dwarf2_per_objfile |
23722 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 23723 | |
b98664d3 | 23724 | complaint (_("Dwarf Error: DW_AT_signature has bad form %s in DIE" |
9d8780f0 SM |
23725 | " at %s [in module %s]"), |
23726 | dwarf_form_name (attr->form), sect_offset_str (die->sect_off), | |
4262abfb | 23727 | objfile_name (dwarf2_per_objfile->objfile)); |
ac9ec31b DE |
23728 | return build_error_marker_type (cu, die); |
23729 | } | |
348e048f DE |
23730 | } |
23731 | ||
e5fe5e75 | 23732 | /* Load the DIEs associated with type unit PER_CU into memory. */ |
348e048f DE |
23733 | |
23734 | static void | |
e5fe5e75 | 23735 | load_full_type_unit (struct dwarf2_per_cu_data *per_cu) |
348e048f | 23736 | { |
52dc124a | 23737 | struct signatured_type *sig_type; |
348e048f | 23738 | |
f4dc4d17 DE |
23739 | /* Caller is responsible for ensuring type_unit_groups don't get here. */ |
23740 | gdb_assert (! IS_TYPE_UNIT_GROUP (per_cu)); | |
23741 | ||
6721b2ec DE |
23742 | /* We have the per_cu, but we need the signatured_type. |
23743 | Fortunately this is an easy translation. */ | |
23744 | gdb_assert (per_cu->is_debug_types); | |
23745 | sig_type = (struct signatured_type *) per_cu; | |
348e048f | 23746 | |
6721b2ec | 23747 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23748 | |
52dc124a | 23749 | read_signatured_type (sig_type); |
348e048f | 23750 | |
6721b2ec | 23751 | gdb_assert (per_cu->cu != NULL); |
348e048f DE |
23752 | } |
23753 | ||
dee91e82 DE |
23754 | /* die_reader_func for read_signatured_type. |
23755 | This is identical to load_full_comp_unit_reader, | |
23756 | but is kept separate for now. */ | |
348e048f DE |
23757 | |
23758 | static void | |
dee91e82 | 23759 | read_signatured_type_reader (const struct die_reader_specs *reader, |
d521ce57 | 23760 | const gdb_byte *info_ptr, |
dee91e82 DE |
23761 | struct die_info *comp_unit_die, |
23762 | int has_children, | |
23763 | void *data) | |
348e048f | 23764 | { |
dee91e82 | 23765 | struct dwarf2_cu *cu = reader->cu; |
348e048f | 23766 | |
dee91e82 DE |
23767 | gdb_assert (cu->die_hash == NULL); |
23768 | cu->die_hash = | |
23769 | htab_create_alloc_ex (cu->header.length / 12, | |
23770 | die_hash, | |
23771 | die_eq, | |
23772 | NULL, | |
23773 | &cu->comp_unit_obstack, | |
23774 | hashtab_obstack_allocate, | |
23775 | dummy_obstack_deallocate); | |
348e048f | 23776 | |
dee91e82 DE |
23777 | if (has_children) |
23778 | comp_unit_die->child = read_die_and_siblings (reader, info_ptr, | |
23779 | &info_ptr, comp_unit_die); | |
23780 | cu->dies = comp_unit_die; | |
23781 | /* comp_unit_die is not stored in die_hash, no need. */ | |
348e048f DE |
23782 | |
23783 | /* We try not to read any attributes in this function, because not | |
9cdd5dbd | 23784 | all CUs needed for references have been loaded yet, and symbol |
348e048f | 23785 | table processing isn't initialized. But we have to set the CU language, |
dee91e82 DE |
23786 | or we won't be able to build types correctly. |
23787 | Similarly, if we do not read the producer, we can not apply | |
23788 | producer-specific interpretation. */ | |
95554aad | 23789 | prepare_one_comp_unit (cu, cu->dies, language_minimal); |
dee91e82 | 23790 | } |
348e048f | 23791 | |
3019eac3 DE |
23792 | /* Read in a signatured type and build its CU and DIEs. |
23793 | If the type is a stub for the real type in a DWO file, | |
23794 | read in the real type from the DWO file as well. */ | |
dee91e82 DE |
23795 | |
23796 | static void | |
23797 | read_signatured_type (struct signatured_type *sig_type) | |
23798 | { | |
23799 | struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu; | |
348e048f | 23800 | |
3019eac3 | 23801 | gdb_assert (per_cu->is_debug_types); |
dee91e82 | 23802 | gdb_assert (per_cu->cu == NULL); |
348e048f | 23803 | |
58f0c718 | 23804 | init_cutu_and_read_dies (per_cu, NULL, 0, 1, false, |
f4dc4d17 | 23805 | read_signatured_type_reader, NULL); |
7ee85ab1 | 23806 | sig_type->per_cu.tu_read = 1; |
c906108c SS |
23807 | } |
23808 | ||
c906108c SS |
23809 | /* Decode simple location descriptions. |
23810 | Given a pointer to a dwarf block that defines a location, compute | |
23811 | the location and return the value. | |
23812 | ||
4cecd739 DJ |
23813 | NOTE drow/2003-11-18: This function is called in two situations |
23814 | now: for the address of static or global variables (partial symbols | |
23815 | only) and for offsets into structures which are expected to be | |
23816 | (more or less) constant. The partial symbol case should go away, | |
23817 | and only the constant case should remain. That will let this | |
23818 | function complain more accurately. A few special modes are allowed | |
23819 | without complaint for global variables (for instance, global | |
23820 | register values and thread-local values). | |
c906108c SS |
23821 | |
23822 | A location description containing no operations indicates that the | |
4cecd739 | 23823 | object is optimized out. The return value is 0 for that case. |
6b992462 DJ |
23824 | FIXME drow/2003-11-16: No callers check for this case any more; soon all |
23825 | callers will only want a very basic result and this can become a | |
21ae7a4d JK |
23826 | complaint. |
23827 | ||
23828 | Note that stack[0] is unused except as a default error return. */ | |
c906108c SS |
23829 | |
23830 | static CORE_ADDR | |
e7c27a73 | 23831 | decode_locdesc (struct dwarf_block *blk, struct dwarf2_cu *cu) |
c906108c | 23832 | { |
518817b3 | 23833 | struct objfile *objfile = cu->per_cu->dwarf2_per_objfile->objfile; |
56eb65bd SP |
23834 | size_t i; |
23835 | size_t size = blk->size; | |
d521ce57 | 23836 | const gdb_byte *data = blk->data; |
21ae7a4d JK |
23837 | CORE_ADDR stack[64]; |
23838 | int stacki; | |
23839 | unsigned int bytes_read, unsnd; | |
23840 | gdb_byte op; | |
c906108c | 23841 | |
21ae7a4d JK |
23842 | i = 0; |
23843 | stacki = 0; | |
23844 | stack[stacki] = 0; | |
23845 | stack[++stacki] = 0; | |
23846 | ||
23847 | while (i < size) | |
23848 | { | |
23849 | op = data[i++]; | |
23850 | switch (op) | |
23851 | { | |
23852 | case DW_OP_lit0: | |
23853 | case DW_OP_lit1: | |
23854 | case DW_OP_lit2: | |
23855 | case DW_OP_lit3: | |
23856 | case DW_OP_lit4: | |
23857 | case DW_OP_lit5: | |
23858 | case DW_OP_lit6: | |
23859 | case DW_OP_lit7: | |
23860 | case DW_OP_lit8: | |
23861 | case DW_OP_lit9: | |
23862 | case DW_OP_lit10: | |
23863 | case DW_OP_lit11: | |
23864 | case DW_OP_lit12: | |
23865 | case DW_OP_lit13: | |
23866 | case DW_OP_lit14: | |
23867 | case DW_OP_lit15: | |
23868 | case DW_OP_lit16: | |
23869 | case DW_OP_lit17: | |
23870 | case DW_OP_lit18: | |
23871 | case DW_OP_lit19: | |
23872 | case DW_OP_lit20: | |
23873 | case DW_OP_lit21: | |
23874 | case DW_OP_lit22: | |
23875 | case DW_OP_lit23: | |
23876 | case DW_OP_lit24: | |
23877 | case DW_OP_lit25: | |
23878 | case DW_OP_lit26: | |
23879 | case DW_OP_lit27: | |
23880 | case DW_OP_lit28: | |
23881 | case DW_OP_lit29: | |
23882 | case DW_OP_lit30: | |
23883 | case DW_OP_lit31: | |
23884 | stack[++stacki] = op - DW_OP_lit0; | |
23885 | break; | |
f1bea926 | 23886 | |
21ae7a4d JK |
23887 | case DW_OP_reg0: |
23888 | case DW_OP_reg1: | |
23889 | case DW_OP_reg2: | |
23890 | case DW_OP_reg3: | |
23891 | case DW_OP_reg4: | |
23892 | case DW_OP_reg5: | |
23893 | case DW_OP_reg6: | |
23894 | case DW_OP_reg7: | |
23895 | case DW_OP_reg8: | |
23896 | case DW_OP_reg9: | |
23897 | case DW_OP_reg10: | |
23898 | case DW_OP_reg11: | |
23899 | case DW_OP_reg12: | |
23900 | case DW_OP_reg13: | |
23901 | case DW_OP_reg14: | |
23902 | case DW_OP_reg15: | |
23903 | case DW_OP_reg16: | |
23904 | case DW_OP_reg17: | |
23905 | case DW_OP_reg18: | |
23906 | case DW_OP_reg19: | |
23907 | case DW_OP_reg20: | |
23908 | case DW_OP_reg21: | |
23909 | case DW_OP_reg22: | |
23910 | case DW_OP_reg23: | |
23911 | case DW_OP_reg24: | |
23912 | case DW_OP_reg25: | |
23913 | case DW_OP_reg26: | |
23914 | case DW_OP_reg27: | |
23915 | case DW_OP_reg28: | |
23916 | case DW_OP_reg29: | |
23917 | case DW_OP_reg30: | |
23918 | case DW_OP_reg31: | |
23919 | stack[++stacki] = op - DW_OP_reg0; | |
23920 | if (i < size) | |
23921 | dwarf2_complex_location_expr_complaint (); | |
23922 | break; | |
c906108c | 23923 | |
21ae7a4d JK |
23924 | case DW_OP_regx: |
23925 | unsnd = read_unsigned_leb128 (NULL, (data + i), &bytes_read); | |
23926 | i += bytes_read; | |
23927 | stack[++stacki] = unsnd; | |
23928 | if (i < size) | |
23929 | dwarf2_complex_location_expr_complaint (); | |
23930 | break; | |
c906108c | 23931 | |
21ae7a4d JK |
23932 | case DW_OP_addr: |
23933 | stack[++stacki] = read_address (objfile->obfd, &data[i], | |
23934 | cu, &bytes_read); | |
23935 | i += bytes_read; | |
23936 | break; | |
d53d4ac5 | 23937 | |
21ae7a4d JK |
23938 | case DW_OP_const1u: |
23939 | stack[++stacki] = read_1_byte (objfile->obfd, &data[i]); | |
23940 | i += 1; | |
23941 | break; | |
23942 | ||
23943 | case DW_OP_const1s: | |
23944 | stack[++stacki] = read_1_signed_byte (objfile->obfd, &data[i]); | |
23945 | i += 1; | |
23946 | break; | |
23947 | ||
23948 | case DW_OP_const2u: | |
23949 | stack[++stacki] = read_2_bytes (objfile->obfd, &data[i]); | |
23950 | i += 2; | |
23951 | break; | |
23952 | ||
23953 | case DW_OP_const2s: | |
23954 | stack[++stacki] = read_2_signed_bytes (objfile->obfd, &data[i]); | |
23955 | i += 2; | |
23956 | break; | |
d53d4ac5 | 23957 | |
21ae7a4d JK |
23958 | case DW_OP_const4u: |
23959 | stack[++stacki] = read_4_bytes (objfile->obfd, &data[i]); | |
23960 | i += 4; | |
23961 | break; | |
23962 | ||
23963 | case DW_OP_const4s: | |
23964 | stack[++stacki] = read_4_signed_bytes (objfile->obfd, &data[i]); | |
23965 | i += 4; | |
23966 | break; | |
23967 | ||
585861ea JK |
23968 | case DW_OP_const8u: |
23969 | stack[++stacki] = read_8_bytes (objfile->obfd, &data[i]); | |
23970 | i += 8; | |
23971 | break; | |
23972 | ||
21ae7a4d JK |
23973 | case DW_OP_constu: |
23974 | stack[++stacki] = read_unsigned_leb128 (NULL, (data + i), | |
23975 | &bytes_read); | |
23976 | i += bytes_read; | |
23977 | break; | |
23978 | ||
23979 | case DW_OP_consts: | |
23980 | stack[++stacki] = read_signed_leb128 (NULL, (data + i), &bytes_read); | |
23981 | i += bytes_read; | |
23982 | break; | |
23983 | ||
23984 | case DW_OP_dup: | |
23985 | stack[stacki + 1] = stack[stacki]; | |
23986 | stacki++; | |
23987 | break; | |
23988 | ||
23989 | case DW_OP_plus: | |
23990 | stack[stacki - 1] += stack[stacki]; | |
23991 | stacki--; | |
23992 | break; | |
23993 | ||
23994 | case DW_OP_plus_uconst: | |
23995 | stack[stacki] += read_unsigned_leb128 (NULL, (data + i), | |
23996 | &bytes_read); | |
23997 | i += bytes_read; | |
23998 | break; | |
23999 | ||
24000 | case DW_OP_minus: | |
24001 | stack[stacki - 1] -= stack[stacki]; | |
24002 | stacki--; | |
24003 | break; | |
24004 | ||
24005 | case DW_OP_deref: | |
24006 | /* If we're not the last op, then we definitely can't encode | |
24007 | this using GDB's address_class enum. This is valid for partial | |
24008 | global symbols, although the variable's address will be bogus | |
24009 | in the psymtab. */ | |
24010 | if (i < size) | |
24011 | dwarf2_complex_location_expr_complaint (); | |
24012 | break; | |
24013 | ||
24014 | case DW_OP_GNU_push_tls_address: | |
4aa4e28b | 24015 | case DW_OP_form_tls_address: |
21ae7a4d JK |
24016 | /* The top of the stack has the offset from the beginning |
24017 | of the thread control block at which the variable is located. */ | |
24018 | /* Nothing should follow this operator, so the top of stack would | |
24019 | be returned. */ | |
24020 | /* This is valid for partial global symbols, but the variable's | |
585861ea JK |
24021 | address will be bogus in the psymtab. Make it always at least |
24022 | non-zero to not look as a variable garbage collected by linker | |
24023 | which have DW_OP_addr 0. */ | |
21ae7a4d JK |
24024 | if (i < size) |
24025 | dwarf2_complex_location_expr_complaint (); | |
585861ea | 24026 | stack[stacki]++; |
21ae7a4d JK |
24027 | break; |
24028 | ||
24029 | case DW_OP_GNU_uninit: | |
24030 | break; | |
24031 | ||
336d760d | 24032 | case DW_OP_addrx: |
3019eac3 | 24033 | case DW_OP_GNU_addr_index: |
49f6c839 | 24034 | case DW_OP_GNU_const_index: |
3019eac3 DE |
24035 | stack[++stacki] = read_addr_index_from_leb128 (cu, &data[i], |
24036 | &bytes_read); | |
24037 | i += bytes_read; | |
24038 | break; | |
24039 | ||
21ae7a4d JK |
24040 | default: |
24041 | { | |
f39c6ffd | 24042 | const char *name = get_DW_OP_name (op); |
21ae7a4d JK |
24043 | |
24044 | if (name) | |
b98664d3 | 24045 | complaint (_("unsupported stack op: '%s'"), |
21ae7a4d JK |
24046 | name); |
24047 | else | |
b98664d3 | 24048 | complaint (_("unsupported stack op: '%02x'"), |
21ae7a4d JK |
24049 | op); |
24050 | } | |
24051 | ||
24052 | return (stack[stacki]); | |
d53d4ac5 | 24053 | } |
3c6e0cb3 | 24054 | |
21ae7a4d JK |
24055 | /* Enforce maximum stack depth of SIZE-1 to avoid writing |
24056 | outside of the allocated space. Also enforce minimum>0. */ | |
24057 | if (stacki >= ARRAY_SIZE (stack) - 1) | |
24058 | { | |
b98664d3 | 24059 | complaint (_("location description stack overflow")); |
21ae7a4d JK |
24060 | return 0; |
24061 | } | |
24062 | ||
24063 | if (stacki <= 0) | |
24064 | { | |
b98664d3 | 24065 | complaint (_("location description stack underflow")); |
21ae7a4d JK |
24066 | return 0; |
24067 | } | |
24068 | } | |
24069 | return (stack[stacki]); | |
c906108c SS |
24070 | } |
24071 | ||
24072 | /* memory allocation interface */ | |
24073 | ||
c906108c | 24074 | static struct dwarf_block * |
7b5a2f43 | 24075 | dwarf_alloc_block (struct dwarf2_cu *cu) |
c906108c | 24076 | { |
8d749320 | 24077 | return XOBNEW (&cu->comp_unit_obstack, struct dwarf_block); |
c906108c SS |
24078 | } |
24079 | ||
c906108c | 24080 | static struct die_info * |
b60c80d6 | 24081 | dwarf_alloc_die (struct dwarf2_cu *cu, int num_attrs) |
c906108c SS |
24082 | { |
24083 | struct die_info *die; | |
b60c80d6 DJ |
24084 | size_t size = sizeof (struct die_info); |
24085 | ||
24086 | if (num_attrs > 1) | |
24087 | size += (num_attrs - 1) * sizeof (struct attribute); | |
c906108c | 24088 | |
b60c80d6 | 24089 | die = (struct die_info *) obstack_alloc (&cu->comp_unit_obstack, size); |
c906108c SS |
24090 | memset (die, 0, sizeof (struct die_info)); |
24091 | return (die); | |
24092 | } | |
2e276125 JB |
24093 | |
24094 | \f | |
24095 | /* Macro support. */ | |
24096 | ||
233d95b5 JK |
24097 | /* Return file name relative to the compilation directory of file number I in |
24098 | *LH's file name table. The result is allocated using xmalloc; the caller is | |
2e276125 | 24099 | responsible for freeing it. */ |
233d95b5 | 24100 | |
2e276125 | 24101 | static char * |
233d95b5 | 24102 | file_file_name (int file, struct line_header *lh) |
2e276125 | 24103 | { |
6a83a1e6 EZ |
24104 | /* Is the file number a valid index into the line header's file name |
24105 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 24106 | if (1 <= file && file <= lh->file_names.size ()) |
6a83a1e6 | 24107 | { |
8c43009f | 24108 | const file_entry &fe = lh->file_names[file - 1]; |
6e70227d | 24109 | |
8c43009f PA |
24110 | if (!IS_ABSOLUTE_PATH (fe.name)) |
24111 | { | |
24112 | const char *dir = fe.include_dir (lh); | |
24113 | if (dir != NULL) | |
24114 | return concat (dir, SLASH_STRING, fe.name, (char *) NULL); | |
24115 | } | |
24116 | return xstrdup (fe.name); | |
6a83a1e6 | 24117 | } |
2e276125 JB |
24118 | else |
24119 | { | |
6a83a1e6 EZ |
24120 | /* The compiler produced a bogus file number. We can at least |
24121 | record the macro definitions made in the file, even if we | |
24122 | won't be able to find the file by name. */ | |
24123 | char fake_name[80]; | |
9a619af0 | 24124 | |
8c042590 PM |
24125 | xsnprintf (fake_name, sizeof (fake_name), |
24126 | "<bad macro file number %d>", file); | |
2e276125 | 24127 | |
b98664d3 | 24128 | complaint (_("bad file number in macro information (%d)"), |
6a83a1e6 | 24129 | file); |
2e276125 | 24130 | |
6a83a1e6 | 24131 | return xstrdup (fake_name); |
2e276125 JB |
24132 | } |
24133 | } | |
24134 | ||
233d95b5 JK |
24135 | /* Return the full name of file number I in *LH's file name table. |
24136 | Use COMP_DIR as the name of the current directory of the | |
24137 | compilation. The result is allocated using xmalloc; the caller is | |
24138 | responsible for freeing it. */ | |
24139 | static char * | |
24140 | file_full_name (int file, struct line_header *lh, const char *comp_dir) | |
24141 | { | |
24142 | /* Is the file number a valid index into the line header's file name | |
24143 | table? Remember that file numbers start with one, not zero. */ | |
fff8551c | 24144 | if (1 <= file && file <= lh->file_names.size ()) |
233d95b5 JK |
24145 | { |
24146 | char *relative = file_file_name (file, lh); | |
24147 | ||
24148 | if (IS_ABSOLUTE_PATH (relative) || comp_dir == NULL) | |
24149 | return relative; | |
b36cec19 PA |
24150 | return reconcat (relative, comp_dir, SLASH_STRING, |
24151 | relative, (char *) NULL); | |
233d95b5 JK |
24152 | } |
24153 | else | |
24154 | return file_file_name (file, lh); | |
24155 | } | |
24156 | ||
2e276125 JB |
24157 | |
24158 | static struct macro_source_file * | |
804d2729 TT |
24159 | macro_start_file (struct dwarf2_cu *cu, |
24160 | int file, int line, | |
2e276125 | 24161 | struct macro_source_file *current_file, |
43f3e411 | 24162 | struct line_header *lh) |
2e276125 | 24163 | { |
233d95b5 JK |
24164 | /* File name relative to the compilation directory of this source file. */ |
24165 | char *file_name = file_file_name (file, lh); | |
2e276125 | 24166 | |
2e276125 | 24167 | if (! current_file) |
abc9d0dc | 24168 | { |
fc474241 DE |
24169 | /* Note: We don't create a macro table for this compilation unit |
24170 | at all until we actually get a filename. */ | |
c24bdb02 | 24171 | struct macro_table *macro_table = cu->get_builder ()->get_macro_table (); |
fc474241 | 24172 | |
abc9d0dc TT |
24173 | /* If we have no current file, then this must be the start_file |
24174 | directive for the compilation unit's main source file. */ | |
fc474241 DE |
24175 | current_file = macro_set_main (macro_table, file_name); |
24176 | macro_define_special (macro_table); | |
abc9d0dc | 24177 | } |
2e276125 | 24178 | else |
233d95b5 | 24179 | current_file = macro_include (current_file, line, file_name); |
2e276125 | 24180 | |
233d95b5 | 24181 | xfree (file_name); |
6e70227d | 24182 | |
2e276125 JB |
24183 | return current_file; |
24184 | } | |
24185 | ||
2e276125 JB |
24186 | static const char * |
24187 | consume_improper_spaces (const char *p, const char *body) | |
24188 | { | |
24189 | if (*p == ' ') | |
24190 | { | |
b98664d3 | 24191 | complaint (_("macro definition contains spaces " |
3e43a32a | 24192 | "in formal argument list:\n`%s'"), |
4d3c2250 | 24193 | body); |
2e276125 JB |
24194 | |
24195 | while (*p == ' ') | |
24196 | p++; | |
24197 | } | |
24198 | ||
24199 | return p; | |
24200 | } | |
24201 | ||
24202 | ||
24203 | static void | |
24204 | parse_macro_definition (struct macro_source_file *file, int line, | |
24205 | const char *body) | |
24206 | { | |
24207 | const char *p; | |
24208 | ||
24209 | /* The body string takes one of two forms. For object-like macro | |
24210 | definitions, it should be: | |
24211 | ||
24212 | <macro name> " " <definition> | |
24213 | ||
24214 | For function-like macro definitions, it should be: | |
24215 | ||
24216 | <macro name> "() " <definition> | |
24217 | or | |
24218 | <macro name> "(" <arg name> ( "," <arg name> ) * ") " <definition> | |
24219 | ||
24220 | Spaces may appear only where explicitly indicated, and in the | |
24221 | <definition>. | |
24222 | ||
24223 | The Dwarf 2 spec says that an object-like macro's name is always | |
24224 | followed by a space, but versions of GCC around March 2002 omit | |
6e70227d | 24225 | the space when the macro's definition is the empty string. |
2e276125 JB |
24226 | |
24227 | The Dwarf 2 spec says that there should be no spaces between the | |
24228 | formal arguments in a function-like macro's formal argument list, | |
24229 | but versions of GCC around March 2002 include spaces after the | |
24230 | commas. */ | |
24231 | ||
24232 | ||
24233 | /* Find the extent of the macro name. The macro name is terminated | |
24234 | by either a space or null character (for an object-like macro) or | |
24235 | an opening paren (for a function-like macro). */ | |
24236 | for (p = body; *p; p++) | |
24237 | if (*p == ' ' || *p == '(') | |
24238 | break; | |
24239 | ||
24240 | if (*p == ' ' || *p == '\0') | |
24241 | { | |
24242 | /* It's an object-like macro. */ | |
24243 | int name_len = p - body; | |
3f8a7804 | 24244 | char *name = savestring (body, name_len); |
2e276125 JB |
24245 | const char *replacement; |
24246 | ||
24247 | if (*p == ' ') | |
24248 | replacement = body + name_len + 1; | |
24249 | else | |
24250 | { | |
4d3c2250 | 24251 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24252 | replacement = body + name_len; |
24253 | } | |
6e70227d | 24254 | |
2e276125 JB |
24255 | macro_define_object (file, line, name, replacement); |
24256 | ||
24257 | xfree (name); | |
24258 | } | |
24259 | else if (*p == '(') | |
24260 | { | |
24261 | /* It's a function-like macro. */ | |
3f8a7804 | 24262 | char *name = savestring (body, p - body); |
2e276125 JB |
24263 | int argc = 0; |
24264 | int argv_size = 1; | |
8d749320 | 24265 | char **argv = XNEWVEC (char *, argv_size); |
2e276125 JB |
24266 | |
24267 | p++; | |
24268 | ||
24269 | p = consume_improper_spaces (p, body); | |
24270 | ||
24271 | /* Parse the formal argument list. */ | |
24272 | while (*p && *p != ')') | |
24273 | { | |
24274 | /* Find the extent of the current argument name. */ | |
24275 | const char *arg_start = p; | |
24276 | ||
24277 | while (*p && *p != ',' && *p != ')' && *p != ' ') | |
24278 | p++; | |
24279 | ||
24280 | if (! *p || p == arg_start) | |
4d3c2250 | 24281 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24282 | else |
24283 | { | |
24284 | /* Make sure argv has room for the new argument. */ | |
24285 | if (argc >= argv_size) | |
24286 | { | |
24287 | argv_size *= 2; | |
224c3ddb | 24288 | argv = XRESIZEVEC (char *, argv, argv_size); |
2e276125 JB |
24289 | } |
24290 | ||
3f8a7804 | 24291 | argv[argc++] = savestring (arg_start, p - arg_start); |
2e276125 JB |
24292 | } |
24293 | ||
24294 | p = consume_improper_spaces (p, body); | |
24295 | ||
24296 | /* Consume the comma, if present. */ | |
24297 | if (*p == ',') | |
24298 | { | |
24299 | p++; | |
24300 | ||
24301 | p = consume_improper_spaces (p, body); | |
24302 | } | |
24303 | } | |
24304 | ||
24305 | if (*p == ')') | |
24306 | { | |
24307 | p++; | |
24308 | ||
24309 | if (*p == ' ') | |
24310 | /* Perfectly formed definition, no complaints. */ | |
24311 | macro_define_function (file, line, name, | |
6e70227d | 24312 | argc, (const char **) argv, |
2e276125 JB |
24313 | p + 1); |
24314 | else if (*p == '\0') | |
24315 | { | |
24316 | /* Complain, but do define it. */ | |
4d3c2250 | 24317 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 | 24318 | macro_define_function (file, line, name, |
6e70227d | 24319 | argc, (const char **) argv, |
2e276125 JB |
24320 | p); |
24321 | } | |
24322 | else | |
24323 | /* Just complain. */ | |
4d3c2250 | 24324 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24325 | } |
24326 | else | |
24327 | /* Just complain. */ | |
4d3c2250 | 24328 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24329 | |
24330 | xfree (name); | |
24331 | { | |
24332 | int i; | |
24333 | ||
24334 | for (i = 0; i < argc; i++) | |
24335 | xfree (argv[i]); | |
24336 | } | |
24337 | xfree (argv); | |
24338 | } | |
24339 | else | |
4d3c2250 | 24340 | dwarf2_macro_malformed_definition_complaint (body); |
2e276125 JB |
24341 | } |
24342 | ||
cf2c3c16 TT |
24343 | /* Skip some bytes from BYTES according to the form given in FORM. |
24344 | Returns the new pointer. */ | |
2e276125 | 24345 | |
d521ce57 TT |
24346 | static const gdb_byte * |
24347 | skip_form_bytes (bfd *abfd, const gdb_byte *bytes, const gdb_byte *buffer_end, | |
cf2c3c16 TT |
24348 | enum dwarf_form form, |
24349 | unsigned int offset_size, | |
24350 | struct dwarf2_section_info *section) | |
2e276125 | 24351 | { |
cf2c3c16 | 24352 | unsigned int bytes_read; |
2e276125 | 24353 | |
cf2c3c16 | 24354 | switch (form) |
2e276125 | 24355 | { |
cf2c3c16 TT |
24356 | case DW_FORM_data1: |
24357 | case DW_FORM_flag: | |
24358 | ++bytes; | |
24359 | break; | |
24360 | ||
24361 | case DW_FORM_data2: | |
24362 | bytes += 2; | |
24363 | break; | |
24364 | ||
24365 | case DW_FORM_data4: | |
24366 | bytes += 4; | |
24367 | break; | |
24368 | ||
24369 | case DW_FORM_data8: | |
24370 | bytes += 8; | |
24371 | break; | |
24372 | ||
0224619f JK |
24373 | case DW_FORM_data16: |
24374 | bytes += 16; | |
24375 | break; | |
24376 | ||
cf2c3c16 TT |
24377 | case DW_FORM_string: |
24378 | read_direct_string (abfd, bytes, &bytes_read); | |
24379 | bytes += bytes_read; | |
24380 | break; | |
24381 | ||
24382 | case DW_FORM_sec_offset: | |
24383 | case DW_FORM_strp: | |
36586728 | 24384 | case DW_FORM_GNU_strp_alt: |
cf2c3c16 TT |
24385 | bytes += offset_size; |
24386 | break; | |
24387 | ||
24388 | case DW_FORM_block: | |
24389 | bytes += read_unsigned_leb128 (abfd, bytes, &bytes_read); | |
24390 | bytes += bytes_read; | |
24391 | break; | |
24392 | ||
24393 | case DW_FORM_block1: | |
24394 | bytes += 1 + read_1_byte (abfd, bytes); | |
24395 | break; | |
24396 | case DW_FORM_block2: | |
24397 | bytes += 2 + read_2_bytes (abfd, bytes); | |
24398 | break; | |
24399 | case DW_FORM_block4: | |
24400 | bytes += 4 + read_4_bytes (abfd, bytes); | |
24401 | break; | |
24402 | ||
336d760d | 24403 | case DW_FORM_addrx: |
cf2c3c16 | 24404 | case DW_FORM_sdata: |
cf532bd1 | 24405 | case DW_FORM_strx: |
cf2c3c16 | 24406 | case DW_FORM_udata: |
3019eac3 DE |
24407 | case DW_FORM_GNU_addr_index: |
24408 | case DW_FORM_GNU_str_index: | |
d521ce57 | 24409 | bytes = gdb_skip_leb128 (bytes, buffer_end); |
f664829e DE |
24410 | if (bytes == NULL) |
24411 | { | |
24412 | dwarf2_section_buffer_overflow_complaint (section); | |
24413 | return NULL; | |
24414 | } | |
cf2c3c16 TT |
24415 | break; |
24416 | ||
663c44ac JK |
24417 | case DW_FORM_implicit_const: |
24418 | break; | |
24419 | ||
cf2c3c16 TT |
24420 | default: |
24421 | { | |
b98664d3 | 24422 | complaint (_("invalid form 0x%x in `%s'"), |
a32a8923 | 24423 | form, get_section_name (section)); |
cf2c3c16 TT |
24424 | return NULL; |
24425 | } | |
2e276125 JB |
24426 | } |
24427 | ||
cf2c3c16 TT |
24428 | return bytes; |
24429 | } | |
757a13d0 | 24430 | |
cf2c3c16 TT |
24431 | /* A helper for dwarf_decode_macros that handles skipping an unknown |
24432 | opcode. Returns an updated pointer to the macro data buffer; or, | |
24433 | on error, issues a complaint and returns NULL. */ | |
757a13d0 | 24434 | |
d521ce57 | 24435 | static const gdb_byte * |
cf2c3c16 | 24436 | skip_unknown_opcode (unsigned int opcode, |
d521ce57 TT |
24437 | const gdb_byte **opcode_definitions, |
24438 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, | |
cf2c3c16 TT |
24439 | bfd *abfd, |
24440 | unsigned int offset_size, | |
24441 | struct dwarf2_section_info *section) | |
24442 | { | |
24443 | unsigned int bytes_read, i; | |
24444 | unsigned long arg; | |
d521ce57 | 24445 | const gdb_byte *defn; |
2e276125 | 24446 | |
cf2c3c16 | 24447 | if (opcode_definitions[opcode] == NULL) |
2e276125 | 24448 | { |
b98664d3 | 24449 | complaint (_("unrecognized DW_MACFINO opcode 0x%x"), |
cf2c3c16 TT |
24450 | opcode); |
24451 | return NULL; | |
24452 | } | |
2e276125 | 24453 | |
cf2c3c16 TT |
24454 | defn = opcode_definitions[opcode]; |
24455 | arg = read_unsigned_leb128 (abfd, defn, &bytes_read); | |
24456 | defn += bytes_read; | |
2e276125 | 24457 | |
cf2c3c16 TT |
24458 | for (i = 0; i < arg; ++i) |
24459 | { | |
aead7601 SM |
24460 | mac_ptr = skip_form_bytes (abfd, mac_ptr, mac_end, |
24461 | (enum dwarf_form) defn[i], offset_size, | |
f664829e | 24462 | section); |
cf2c3c16 TT |
24463 | if (mac_ptr == NULL) |
24464 | { | |
24465 | /* skip_form_bytes already issued the complaint. */ | |
24466 | return NULL; | |
24467 | } | |
24468 | } | |
757a13d0 | 24469 | |
cf2c3c16 TT |
24470 | return mac_ptr; |
24471 | } | |
757a13d0 | 24472 | |
cf2c3c16 TT |
24473 | /* A helper function which parses the header of a macro section. |
24474 | If the macro section is the extended (for now called "GNU") type, | |
24475 | then this updates *OFFSET_SIZE. Returns a pointer to just after | |
24476 | the header, or issues a complaint and returns NULL on error. */ | |
757a13d0 | 24477 | |
d521ce57 TT |
24478 | static const gdb_byte * |
24479 | dwarf_parse_macro_header (const gdb_byte **opcode_definitions, | |
cf2c3c16 | 24480 | bfd *abfd, |
d521ce57 | 24481 | const gdb_byte *mac_ptr, |
cf2c3c16 TT |
24482 | unsigned int *offset_size, |
24483 | int section_is_gnu) | |
24484 | { | |
24485 | memset (opcode_definitions, 0, 256 * sizeof (gdb_byte *)); | |
757a13d0 | 24486 | |
cf2c3c16 TT |
24487 | if (section_is_gnu) |
24488 | { | |
24489 | unsigned int version, flags; | |
757a13d0 | 24490 | |
cf2c3c16 | 24491 | version = read_2_bytes (abfd, mac_ptr); |
0af92d60 | 24492 | if (version != 4 && version != 5) |
cf2c3c16 | 24493 | { |
b98664d3 | 24494 | complaint (_("unrecognized version `%d' in .debug_macro section"), |
cf2c3c16 TT |
24495 | version); |
24496 | return NULL; | |
24497 | } | |
24498 | mac_ptr += 2; | |
757a13d0 | 24499 | |
cf2c3c16 TT |
24500 | flags = read_1_byte (abfd, mac_ptr); |
24501 | ++mac_ptr; | |
24502 | *offset_size = (flags & 1) ? 8 : 4; | |
757a13d0 | 24503 | |
cf2c3c16 TT |
24504 | if ((flags & 2) != 0) |
24505 | /* We don't need the line table offset. */ | |
24506 | mac_ptr += *offset_size; | |
757a13d0 | 24507 | |
cf2c3c16 TT |
24508 | /* Vendor opcode descriptions. */ |
24509 | if ((flags & 4) != 0) | |
24510 | { | |
24511 | unsigned int i, count; | |
757a13d0 | 24512 | |
cf2c3c16 TT |
24513 | count = read_1_byte (abfd, mac_ptr); |
24514 | ++mac_ptr; | |
24515 | for (i = 0; i < count; ++i) | |
24516 | { | |
24517 | unsigned int opcode, bytes_read; | |
24518 | unsigned long arg; | |
24519 | ||
24520 | opcode = read_1_byte (abfd, mac_ptr); | |
24521 | ++mac_ptr; | |
24522 | opcode_definitions[opcode] = mac_ptr; | |
24523 | arg = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24524 | mac_ptr += bytes_read; | |
24525 | mac_ptr += arg; | |
24526 | } | |
757a13d0 | 24527 | } |
cf2c3c16 | 24528 | } |
757a13d0 | 24529 | |
cf2c3c16 TT |
24530 | return mac_ptr; |
24531 | } | |
757a13d0 | 24532 | |
cf2c3c16 | 24533 | /* A helper for dwarf_decode_macros that handles the GNU extensions, |
0af92d60 | 24534 | including DW_MACRO_import. */ |
cf2c3c16 TT |
24535 | |
24536 | static void | |
804d2729 | 24537 | dwarf_decode_macro_bytes (struct dwarf2_cu *cu, |
ed2dc618 | 24538 | bfd *abfd, |
d521ce57 | 24539 | const gdb_byte *mac_ptr, const gdb_byte *mac_end, |
cf2c3c16 | 24540 | struct macro_source_file *current_file, |
43f3e411 | 24541 | struct line_header *lh, |
cf2c3c16 | 24542 | struct dwarf2_section_info *section, |
36586728 | 24543 | int section_is_gnu, int section_is_dwz, |
cf2c3c16 | 24544 | unsigned int offset_size, |
8fc3fc34 | 24545 | htab_t include_hash) |
cf2c3c16 | 24546 | { |
804d2729 TT |
24547 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24548 | = cu->per_cu->dwarf2_per_objfile; | |
4d663531 | 24549 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
cf2c3c16 TT |
24550 | enum dwarf_macro_record_type macinfo_type; |
24551 | int at_commandline; | |
d521ce57 | 24552 | const gdb_byte *opcode_definitions[256]; |
757a13d0 | 24553 | |
cf2c3c16 TT |
24554 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, |
24555 | &offset_size, section_is_gnu); | |
24556 | if (mac_ptr == NULL) | |
24557 | { | |
24558 | /* We already issued a complaint. */ | |
24559 | return; | |
24560 | } | |
757a13d0 JK |
24561 | |
24562 | /* Determines if GDB is still before first DW_MACINFO_start_file. If true | |
24563 | GDB is still reading the definitions from command line. First | |
24564 | DW_MACINFO_start_file will need to be ignored as it was already executed | |
24565 | to create CURRENT_FILE for the main source holding also the command line | |
24566 | definitions. On first met DW_MACINFO_start_file this flag is reset to | |
24567 | normally execute all the remaining DW_MACINFO_start_file macinfos. */ | |
24568 | ||
24569 | at_commandline = 1; | |
24570 | ||
24571 | do | |
24572 | { | |
24573 | /* Do we at least have room for a macinfo type byte? */ | |
24574 | if (mac_ptr >= mac_end) | |
24575 | { | |
f664829e | 24576 | dwarf2_section_buffer_overflow_complaint (section); |
757a13d0 JK |
24577 | break; |
24578 | } | |
24579 | ||
aead7601 | 24580 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
757a13d0 JK |
24581 | mac_ptr++; |
24582 | ||
cf2c3c16 TT |
24583 | /* Note that we rely on the fact that the corresponding GNU and |
24584 | DWARF constants are the same. */ | |
132448f8 SM |
24585 | DIAGNOSTIC_PUSH |
24586 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
757a13d0 JK |
24587 | switch (macinfo_type) |
24588 | { | |
24589 | /* A zero macinfo type indicates the end of the macro | |
24590 | information. */ | |
24591 | case 0: | |
24592 | break; | |
2e276125 | 24593 | |
0af92d60 JK |
24594 | case DW_MACRO_define: |
24595 | case DW_MACRO_undef: | |
24596 | case DW_MACRO_define_strp: | |
24597 | case DW_MACRO_undef_strp: | |
24598 | case DW_MACRO_define_sup: | |
24599 | case DW_MACRO_undef_sup: | |
2e276125 | 24600 | { |
891d2f0b | 24601 | unsigned int bytes_read; |
2e276125 | 24602 | int line; |
d521ce57 | 24603 | const char *body; |
cf2c3c16 | 24604 | int is_define; |
2e276125 | 24605 | |
cf2c3c16 TT |
24606 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); |
24607 | mac_ptr += bytes_read; | |
24608 | ||
0af92d60 JK |
24609 | if (macinfo_type == DW_MACRO_define |
24610 | || macinfo_type == DW_MACRO_undef) | |
cf2c3c16 TT |
24611 | { |
24612 | body = read_direct_string (abfd, mac_ptr, &bytes_read); | |
24613 | mac_ptr += bytes_read; | |
24614 | } | |
24615 | else | |
24616 | { | |
24617 | LONGEST str_offset; | |
24618 | ||
24619 | str_offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24620 | mac_ptr += offset_size; | |
2e276125 | 24621 | |
0af92d60 JK |
24622 | if (macinfo_type == DW_MACRO_define_sup |
24623 | || macinfo_type == DW_MACRO_undef_sup | |
f7a35f02 | 24624 | || section_is_dwz) |
36586728 | 24625 | { |
ed2dc618 SM |
24626 | struct dwz_file *dwz |
24627 | = dwarf2_get_dwz_file (dwarf2_per_objfile); | |
36586728 | 24628 | |
ed2dc618 SM |
24629 | body = read_indirect_string_from_dwz (objfile, |
24630 | dwz, str_offset); | |
36586728 TT |
24631 | } |
24632 | else | |
ed2dc618 SM |
24633 | body = read_indirect_string_at_offset (dwarf2_per_objfile, |
24634 | abfd, str_offset); | |
cf2c3c16 TT |
24635 | } |
24636 | ||
0af92d60 JK |
24637 | is_define = (macinfo_type == DW_MACRO_define |
24638 | || macinfo_type == DW_MACRO_define_strp | |
24639 | || macinfo_type == DW_MACRO_define_sup); | |
2e276125 | 24640 | if (! current_file) |
757a13d0 JK |
24641 | { |
24642 | /* DWARF violation as no main source is present. */ | |
b98664d3 | 24643 | complaint (_("debug info with no main source gives macro %s " |
757a13d0 | 24644 | "on line %d: %s"), |
cf2c3c16 TT |
24645 | is_define ? _("definition") : _("undefinition"), |
24646 | line, body); | |
757a13d0 JK |
24647 | break; |
24648 | } | |
3e43a32a MS |
24649 | if ((line == 0 && !at_commandline) |
24650 | || (line != 0 && at_commandline)) | |
b98664d3 | 24651 | complaint (_("debug info gives %s macro %s with %s line %d: %s"), |
757a13d0 | 24652 | at_commandline ? _("command-line") : _("in-file"), |
cf2c3c16 | 24653 | is_define ? _("definition") : _("undefinition"), |
757a13d0 JK |
24654 | line == 0 ? _("zero") : _("non-zero"), line, body); |
24655 | ||
955b06fa | 24656 | if (body == NULL) |
7bede828 | 24657 | { |
955b06fa SDJ |
24658 | /* Fedora's rpm-build's "debugedit" binary |
24659 | corrupted .debug_macro sections. | |
24660 | ||
24661 | For more info, see | |
24662 | https://bugzilla.redhat.com/show_bug.cgi?id=1708786 */ | |
24663 | complaint (_("debug info gives %s invalid macro %s " | |
24664 | "without body (corrupted?) at line %d " | |
24665 | "on file %s"), | |
24666 | at_commandline ? _("command-line") : _("in-file"), | |
24667 | is_define ? _("definition") : _("undefinition"), | |
24668 | line, current_file->filename); | |
7bede828 | 24669 | } |
955b06fa SDJ |
24670 | else if (is_define) |
24671 | parse_macro_definition (current_file, line, body); | |
cf2c3c16 TT |
24672 | else |
24673 | { | |
0af92d60 JK |
24674 | gdb_assert (macinfo_type == DW_MACRO_undef |
24675 | || macinfo_type == DW_MACRO_undef_strp | |
24676 | || macinfo_type == DW_MACRO_undef_sup); | |
cf2c3c16 TT |
24677 | macro_undef (current_file, line, body); |
24678 | } | |
2e276125 JB |
24679 | } |
24680 | break; | |
24681 | ||
0af92d60 | 24682 | case DW_MACRO_start_file: |
2e276125 | 24683 | { |
891d2f0b | 24684 | unsigned int bytes_read; |
2e276125 JB |
24685 | int line, file; |
24686 | ||
24687 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24688 | mac_ptr += bytes_read; | |
24689 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24690 | mac_ptr += bytes_read; | |
24691 | ||
3e43a32a MS |
24692 | if ((line == 0 && !at_commandline) |
24693 | || (line != 0 && at_commandline)) | |
b98664d3 | 24694 | complaint (_("debug info gives source %d included " |
757a13d0 JK |
24695 | "from %s at %s line %d"), |
24696 | file, at_commandline ? _("command-line") : _("file"), | |
24697 | line == 0 ? _("zero") : _("non-zero"), line); | |
24698 | ||
24699 | if (at_commandline) | |
24700 | { | |
0af92d60 | 24701 | /* This DW_MACRO_start_file was executed in the |
cf2c3c16 | 24702 | pass one. */ |
757a13d0 JK |
24703 | at_commandline = 0; |
24704 | } | |
24705 | else | |
804d2729 TT |
24706 | current_file = macro_start_file (cu, file, line, current_file, |
24707 | lh); | |
2e276125 JB |
24708 | } |
24709 | break; | |
24710 | ||
0af92d60 | 24711 | case DW_MACRO_end_file: |
2e276125 | 24712 | if (! current_file) |
b98664d3 | 24713 | complaint (_("macro debug info has an unmatched " |
3e43a32a | 24714 | "`close_file' directive")); |
2e276125 JB |
24715 | else |
24716 | { | |
24717 | current_file = current_file->included_by; | |
24718 | if (! current_file) | |
24719 | { | |
cf2c3c16 | 24720 | enum dwarf_macro_record_type next_type; |
2e276125 JB |
24721 | |
24722 | /* GCC circa March 2002 doesn't produce the zero | |
24723 | type byte marking the end of the compilation | |
24724 | unit. Complain if it's not there, but exit no | |
24725 | matter what. */ | |
24726 | ||
24727 | /* Do we at least have room for a macinfo type byte? */ | |
24728 | if (mac_ptr >= mac_end) | |
24729 | { | |
f664829e | 24730 | dwarf2_section_buffer_overflow_complaint (section); |
2e276125 JB |
24731 | return; |
24732 | } | |
24733 | ||
24734 | /* We don't increment mac_ptr here, so this is just | |
24735 | a look-ahead. */ | |
aead7601 SM |
24736 | next_type |
24737 | = (enum dwarf_macro_record_type) read_1_byte (abfd, | |
24738 | mac_ptr); | |
2e276125 | 24739 | if (next_type != 0) |
b98664d3 | 24740 | complaint (_("no terminating 0-type entry for " |
3e43a32a | 24741 | "macros in `.debug_macinfo' section")); |
2e276125 JB |
24742 | |
24743 | return; | |
24744 | } | |
24745 | } | |
24746 | break; | |
24747 | ||
0af92d60 JK |
24748 | case DW_MACRO_import: |
24749 | case DW_MACRO_import_sup: | |
cf2c3c16 TT |
24750 | { |
24751 | LONGEST offset; | |
8fc3fc34 | 24752 | void **slot; |
a036ba48 TT |
24753 | bfd *include_bfd = abfd; |
24754 | struct dwarf2_section_info *include_section = section; | |
d521ce57 | 24755 | const gdb_byte *include_mac_end = mac_end; |
a036ba48 | 24756 | int is_dwz = section_is_dwz; |
d521ce57 | 24757 | const gdb_byte *new_mac_ptr; |
cf2c3c16 TT |
24758 | |
24759 | offset = read_offset_1 (abfd, mac_ptr, offset_size); | |
24760 | mac_ptr += offset_size; | |
24761 | ||
0af92d60 | 24762 | if (macinfo_type == DW_MACRO_import_sup) |
a036ba48 | 24763 | { |
ed2dc618 | 24764 | struct dwz_file *dwz = dwarf2_get_dwz_file (dwarf2_per_objfile); |
a036ba48 | 24765 | |
4d663531 | 24766 | dwarf2_read_section (objfile, &dwz->macro); |
a036ba48 | 24767 | |
a036ba48 | 24768 | include_section = &dwz->macro; |
a32a8923 | 24769 | include_bfd = get_section_bfd_owner (include_section); |
a036ba48 TT |
24770 | include_mac_end = dwz->macro.buffer + dwz->macro.size; |
24771 | is_dwz = 1; | |
24772 | } | |
24773 | ||
24774 | new_mac_ptr = include_section->buffer + offset; | |
24775 | slot = htab_find_slot (include_hash, new_mac_ptr, INSERT); | |
24776 | ||
8fc3fc34 TT |
24777 | if (*slot != NULL) |
24778 | { | |
24779 | /* This has actually happened; see | |
24780 | http://sourceware.org/bugzilla/show_bug.cgi?id=13568. */ | |
b98664d3 | 24781 | complaint (_("recursive DW_MACRO_import in " |
8fc3fc34 TT |
24782 | ".debug_macro section")); |
24783 | } | |
24784 | else | |
24785 | { | |
d521ce57 | 24786 | *slot = (void *) new_mac_ptr; |
36586728 | 24787 | |
804d2729 | 24788 | dwarf_decode_macro_bytes (cu, include_bfd, new_mac_ptr, |
43f3e411 | 24789 | include_mac_end, current_file, lh, |
36586728 | 24790 | section, section_is_gnu, is_dwz, |
4d663531 | 24791 | offset_size, include_hash); |
8fc3fc34 | 24792 | |
d521ce57 | 24793 | htab_remove_elt (include_hash, (void *) new_mac_ptr); |
8fc3fc34 | 24794 | } |
cf2c3c16 TT |
24795 | } |
24796 | break; | |
24797 | ||
2e276125 | 24798 | case DW_MACINFO_vendor_ext: |
cf2c3c16 TT |
24799 | if (!section_is_gnu) |
24800 | { | |
24801 | unsigned int bytes_read; | |
2e276125 | 24802 | |
ac298888 TT |
24803 | /* This reads the constant, but since we don't recognize |
24804 | any vendor extensions, we ignore it. */ | |
24805 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
cf2c3c16 TT |
24806 | mac_ptr += bytes_read; |
24807 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24808 | mac_ptr += bytes_read; | |
2e276125 | 24809 | |
cf2c3c16 TT |
24810 | /* We don't recognize any vendor extensions. */ |
24811 | break; | |
24812 | } | |
24813 | /* FALLTHROUGH */ | |
24814 | ||
24815 | default: | |
24816 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24817 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24818 | section); |
24819 | if (mac_ptr == NULL) | |
24820 | return; | |
24821 | break; | |
2e276125 | 24822 | } |
132448f8 | 24823 | DIAGNOSTIC_POP |
757a13d0 | 24824 | } while (macinfo_type != 0); |
2e276125 | 24825 | } |
8e19ed76 | 24826 | |
cf2c3c16 | 24827 | static void |
09262596 | 24828 | dwarf_decode_macros (struct dwarf2_cu *cu, unsigned int offset, |
43f3e411 | 24829 | int section_is_gnu) |
cf2c3c16 | 24830 | { |
518817b3 SM |
24831 | struct dwarf2_per_objfile *dwarf2_per_objfile |
24832 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 24833 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
09262596 DE |
24834 | struct line_header *lh = cu->line_header; |
24835 | bfd *abfd; | |
d521ce57 | 24836 | const gdb_byte *mac_ptr, *mac_end; |
cf2c3c16 TT |
24837 | struct macro_source_file *current_file = 0; |
24838 | enum dwarf_macro_record_type macinfo_type; | |
24839 | unsigned int offset_size = cu->header.offset_size; | |
d521ce57 | 24840 | const gdb_byte *opcode_definitions[256]; |
8fc3fc34 | 24841 | void **slot; |
09262596 DE |
24842 | struct dwarf2_section_info *section; |
24843 | const char *section_name; | |
24844 | ||
24845 | if (cu->dwo_unit != NULL) | |
24846 | { | |
24847 | if (section_is_gnu) | |
24848 | { | |
24849 | section = &cu->dwo_unit->dwo_file->sections.macro; | |
24850 | section_name = ".debug_macro.dwo"; | |
24851 | } | |
24852 | else | |
24853 | { | |
24854 | section = &cu->dwo_unit->dwo_file->sections.macinfo; | |
24855 | section_name = ".debug_macinfo.dwo"; | |
24856 | } | |
24857 | } | |
24858 | else | |
24859 | { | |
24860 | if (section_is_gnu) | |
24861 | { | |
24862 | section = &dwarf2_per_objfile->macro; | |
24863 | section_name = ".debug_macro"; | |
24864 | } | |
24865 | else | |
24866 | { | |
24867 | section = &dwarf2_per_objfile->macinfo; | |
24868 | section_name = ".debug_macinfo"; | |
24869 | } | |
24870 | } | |
cf2c3c16 | 24871 | |
bb5ed363 | 24872 | dwarf2_read_section (objfile, section); |
cf2c3c16 TT |
24873 | if (section->buffer == NULL) |
24874 | { | |
b98664d3 | 24875 | complaint (_("missing %s section"), section_name); |
cf2c3c16 TT |
24876 | return; |
24877 | } | |
a32a8923 | 24878 | abfd = get_section_bfd_owner (section); |
cf2c3c16 TT |
24879 | |
24880 | /* First pass: Find the name of the base filename. | |
24881 | This filename is needed in order to process all macros whose definition | |
24882 | (or undefinition) comes from the command line. These macros are defined | |
24883 | before the first DW_MACINFO_start_file entry, and yet still need to be | |
24884 | associated to the base file. | |
24885 | ||
24886 | To determine the base file name, we scan the macro definitions until we | |
24887 | reach the first DW_MACINFO_start_file entry. We then initialize | |
24888 | CURRENT_FILE accordingly so that any macro definition found before the | |
24889 | first DW_MACINFO_start_file can still be associated to the base file. */ | |
24890 | ||
24891 | mac_ptr = section->buffer + offset; | |
24892 | mac_end = section->buffer + section->size; | |
24893 | ||
24894 | mac_ptr = dwarf_parse_macro_header (opcode_definitions, abfd, mac_ptr, | |
24895 | &offset_size, section_is_gnu); | |
24896 | if (mac_ptr == NULL) | |
24897 | { | |
24898 | /* We already issued a complaint. */ | |
24899 | return; | |
24900 | } | |
24901 | ||
24902 | do | |
24903 | { | |
24904 | /* Do we at least have room for a macinfo type byte? */ | |
24905 | if (mac_ptr >= mac_end) | |
24906 | { | |
24907 | /* Complaint is printed during the second pass as GDB will probably | |
24908 | stop the first pass earlier upon finding | |
24909 | DW_MACINFO_start_file. */ | |
24910 | break; | |
24911 | } | |
24912 | ||
aead7601 | 24913 | macinfo_type = (enum dwarf_macro_record_type) read_1_byte (abfd, mac_ptr); |
cf2c3c16 TT |
24914 | mac_ptr++; |
24915 | ||
24916 | /* Note that we rely on the fact that the corresponding GNU and | |
24917 | DWARF constants are the same. */ | |
132448f8 SM |
24918 | DIAGNOSTIC_PUSH |
24919 | DIAGNOSTIC_IGNORE_SWITCH_DIFFERENT_ENUM_TYPES | |
cf2c3c16 TT |
24920 | switch (macinfo_type) |
24921 | { | |
24922 | /* A zero macinfo type indicates the end of the macro | |
24923 | information. */ | |
24924 | case 0: | |
24925 | break; | |
24926 | ||
0af92d60 JK |
24927 | case DW_MACRO_define: |
24928 | case DW_MACRO_undef: | |
cf2c3c16 TT |
24929 | /* Only skip the data by MAC_PTR. */ |
24930 | { | |
24931 | unsigned int bytes_read; | |
24932 | ||
24933 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24934 | mac_ptr += bytes_read; | |
24935 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24936 | mac_ptr += bytes_read; | |
24937 | } | |
24938 | break; | |
24939 | ||
0af92d60 | 24940 | case DW_MACRO_start_file: |
cf2c3c16 TT |
24941 | { |
24942 | unsigned int bytes_read; | |
24943 | int line, file; | |
24944 | ||
24945 | line = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24946 | mac_ptr += bytes_read; | |
24947 | file = read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24948 | mac_ptr += bytes_read; | |
24949 | ||
804d2729 | 24950 | current_file = macro_start_file (cu, file, line, current_file, lh); |
cf2c3c16 TT |
24951 | } |
24952 | break; | |
24953 | ||
0af92d60 | 24954 | case DW_MACRO_end_file: |
cf2c3c16 TT |
24955 | /* No data to skip by MAC_PTR. */ |
24956 | break; | |
24957 | ||
0af92d60 JK |
24958 | case DW_MACRO_define_strp: |
24959 | case DW_MACRO_undef_strp: | |
24960 | case DW_MACRO_define_sup: | |
24961 | case DW_MACRO_undef_sup: | |
cf2c3c16 TT |
24962 | { |
24963 | unsigned int bytes_read; | |
24964 | ||
24965 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24966 | mac_ptr += bytes_read; | |
24967 | mac_ptr += offset_size; | |
24968 | } | |
24969 | break; | |
24970 | ||
0af92d60 JK |
24971 | case DW_MACRO_import: |
24972 | case DW_MACRO_import_sup: | |
cf2c3c16 | 24973 | /* Note that, according to the spec, a transparent include |
0af92d60 | 24974 | chain cannot call DW_MACRO_start_file. So, we can just |
cf2c3c16 TT |
24975 | skip this opcode. */ |
24976 | mac_ptr += offset_size; | |
24977 | break; | |
24978 | ||
24979 | case DW_MACINFO_vendor_ext: | |
24980 | /* Only skip the data by MAC_PTR. */ | |
24981 | if (!section_is_gnu) | |
24982 | { | |
24983 | unsigned int bytes_read; | |
24984 | ||
24985 | read_unsigned_leb128 (abfd, mac_ptr, &bytes_read); | |
24986 | mac_ptr += bytes_read; | |
24987 | read_direct_string (abfd, mac_ptr, &bytes_read); | |
24988 | mac_ptr += bytes_read; | |
24989 | } | |
24990 | /* FALLTHROUGH */ | |
24991 | ||
24992 | default: | |
24993 | mac_ptr = skip_unknown_opcode (macinfo_type, opcode_definitions, | |
f664829e | 24994 | mac_ptr, mac_end, abfd, offset_size, |
cf2c3c16 TT |
24995 | section); |
24996 | if (mac_ptr == NULL) | |
24997 | return; | |
24998 | break; | |
24999 | } | |
132448f8 | 25000 | DIAGNOSTIC_POP |
cf2c3c16 TT |
25001 | } while (macinfo_type != 0 && current_file == NULL); |
25002 | ||
25003 | /* Second pass: Process all entries. | |
25004 | ||
25005 | Use the AT_COMMAND_LINE flag to determine whether we are still processing | |
25006 | command-line macro definitions/undefinitions. This flag is unset when we | |
25007 | reach the first DW_MACINFO_start_file entry. */ | |
25008 | ||
fc4007c9 TT |
25009 | htab_up include_hash (htab_create_alloc (1, htab_hash_pointer, |
25010 | htab_eq_pointer, | |
25011 | NULL, xcalloc, xfree)); | |
8fc3fc34 | 25012 | mac_ptr = section->buffer + offset; |
fc4007c9 | 25013 | slot = htab_find_slot (include_hash.get (), mac_ptr, INSERT); |
d521ce57 | 25014 | *slot = (void *) mac_ptr; |
804d2729 | 25015 | dwarf_decode_macro_bytes (cu, abfd, mac_ptr, mac_end, |
43f3e411 | 25016 | current_file, lh, section, |
fc4007c9 TT |
25017 | section_is_gnu, 0, offset_size, |
25018 | include_hash.get ()); | |
cf2c3c16 TT |
25019 | } |
25020 | ||
8e19ed76 | 25021 | /* Check if the attribute's form is a DW_FORM_block* |
0963b4bd | 25022 | if so return true else false. */ |
380bca97 | 25023 | |
8e19ed76 | 25024 | static int |
6e5a29e1 | 25025 | attr_form_is_block (const struct attribute *attr) |
8e19ed76 PS |
25026 | { |
25027 | return (attr == NULL ? 0 : | |
25028 | attr->form == DW_FORM_block1 | |
25029 | || attr->form == DW_FORM_block2 | |
25030 | || attr->form == DW_FORM_block4 | |
2dc7f7b3 TT |
25031 | || attr->form == DW_FORM_block |
25032 | || attr->form == DW_FORM_exprloc); | |
8e19ed76 | 25033 | } |
4c2df51b | 25034 | |
c6a0999f JB |
25035 | /* Return non-zero if ATTR's value is a section offset --- classes |
25036 | lineptr, loclistptr, macptr or rangelistptr --- or zero, otherwise. | |
25037 | You may use DW_UNSND (attr) to retrieve such offsets. | |
25038 | ||
25039 | Section 7.5.4, "Attribute Encodings", explains that no attribute | |
25040 | may have a value that belongs to more than one of these classes; it | |
25041 | would be ambiguous if we did, because we use the same forms for all | |
25042 | of them. */ | |
380bca97 | 25043 | |
3690dd37 | 25044 | static int |
6e5a29e1 | 25045 | attr_form_is_section_offset (const struct attribute *attr) |
3690dd37 JB |
25046 | { |
25047 | return (attr->form == DW_FORM_data4 | |
2dc7f7b3 TT |
25048 | || attr->form == DW_FORM_data8 |
25049 | || attr->form == DW_FORM_sec_offset); | |
3690dd37 JB |
25050 | } |
25051 | ||
3690dd37 JB |
25052 | /* Return non-zero if ATTR's value falls in the 'constant' class, or |
25053 | zero otherwise. When this function returns true, you can apply | |
25054 | dwarf2_get_attr_constant_value to it. | |
25055 | ||
25056 | However, note that for some attributes you must check | |
25057 | attr_form_is_section_offset before using this test. DW_FORM_data4 | |
25058 | and DW_FORM_data8 are members of both the constant class, and of | |
25059 | the classes that contain offsets into other debug sections | |
25060 | (lineptr, loclistptr, macptr or rangelistptr). The DWARF spec says | |
25061 | that, if an attribute's can be either a constant or one of the | |
25062 | section offset classes, DW_FORM_data4 and DW_FORM_data8 should be | |
0224619f JK |
25063 | taken as section offsets, not constants. |
25064 | ||
25065 | DW_FORM_data16 is not considered as dwarf2_get_attr_constant_value | |
25066 | cannot handle that. */ | |
380bca97 | 25067 | |
3690dd37 | 25068 | static int |
6e5a29e1 | 25069 | attr_form_is_constant (const struct attribute *attr) |
3690dd37 JB |
25070 | { |
25071 | switch (attr->form) | |
25072 | { | |
25073 | case DW_FORM_sdata: | |
25074 | case DW_FORM_udata: | |
25075 | case DW_FORM_data1: | |
25076 | case DW_FORM_data2: | |
25077 | case DW_FORM_data4: | |
25078 | case DW_FORM_data8: | |
663c44ac | 25079 | case DW_FORM_implicit_const: |
3690dd37 JB |
25080 | return 1; |
25081 | default: | |
25082 | return 0; | |
25083 | } | |
25084 | } | |
25085 | ||
7771576e SA |
25086 | |
25087 | /* DW_ADDR is always stored already as sect_offset; despite for the forms | |
25088 | besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */ | |
25089 | ||
25090 | static int | |
6e5a29e1 | 25091 | attr_form_is_ref (const struct attribute *attr) |
7771576e SA |
25092 | { |
25093 | switch (attr->form) | |
25094 | { | |
25095 | case DW_FORM_ref_addr: | |
25096 | case DW_FORM_ref1: | |
25097 | case DW_FORM_ref2: | |
25098 | case DW_FORM_ref4: | |
25099 | case DW_FORM_ref8: | |
25100 | case DW_FORM_ref_udata: | |
25101 | case DW_FORM_GNU_ref_alt: | |
25102 | return 1; | |
25103 | default: | |
25104 | return 0; | |
25105 | } | |
25106 | } | |
25107 | ||
3019eac3 DE |
25108 | /* Return the .debug_loc section to use for CU. |
25109 | For DWO files use .debug_loc.dwo. */ | |
25110 | ||
25111 | static struct dwarf2_section_info * | |
25112 | cu_debug_loc_section (struct dwarf2_cu *cu) | |
25113 | { | |
518817b3 SM |
25114 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25115 | = cu->per_cu->dwarf2_per_objfile; | |
ed2dc618 | 25116 | |
3019eac3 | 25117 | if (cu->dwo_unit) |
43988095 JK |
25118 | { |
25119 | struct dwo_sections *sections = &cu->dwo_unit->dwo_file->sections; | |
25120 | ||
25121 | return cu->header.version >= 5 ? §ions->loclists : §ions->loc; | |
25122 | } | |
25123 | return (cu->header.version >= 5 ? &dwarf2_per_objfile->loclists | |
25124 | : &dwarf2_per_objfile->loc); | |
3019eac3 DE |
25125 | } |
25126 | ||
8cf6f0b1 TT |
25127 | /* A helper function that fills in a dwarf2_loclist_baton. */ |
25128 | ||
25129 | static void | |
25130 | fill_in_loclist_baton (struct dwarf2_cu *cu, | |
25131 | struct dwarf2_loclist_baton *baton, | |
ff39bb5e | 25132 | const struct attribute *attr) |
8cf6f0b1 | 25133 | { |
518817b3 SM |
25134 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25135 | = cu->per_cu->dwarf2_per_objfile; | |
3019eac3 DE |
25136 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
25137 | ||
25138 | dwarf2_read_section (dwarf2_per_objfile->objfile, section); | |
8cf6f0b1 TT |
25139 | |
25140 | baton->per_cu = cu->per_cu; | |
25141 | gdb_assert (baton->per_cu); | |
25142 | /* We don't know how long the location list is, but make sure we | |
25143 | don't run off the edge of the section. */ | |
3019eac3 DE |
25144 | baton->size = section->size - DW_UNSND (attr); |
25145 | baton->data = section->buffer + DW_UNSND (attr); | |
8cf6f0b1 | 25146 | baton->base_address = cu->base_address; |
f664829e | 25147 | baton->from_dwo = cu->dwo_unit != NULL; |
8cf6f0b1 TT |
25148 | } |
25149 | ||
4c2df51b | 25150 | static void |
ff39bb5e | 25151 | dwarf2_symbol_mark_computed (const struct attribute *attr, struct symbol *sym, |
f1e6e072 | 25152 | struct dwarf2_cu *cu, int is_block) |
4c2df51b | 25153 | { |
518817b3 SM |
25154 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25155 | = cu->per_cu->dwarf2_per_objfile; | |
bb5ed363 | 25156 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3019eac3 | 25157 | struct dwarf2_section_info *section = cu_debug_loc_section (cu); |
bb5ed363 | 25158 | |
3690dd37 | 25159 | if (attr_form_is_section_offset (attr) |
3019eac3 | 25160 | /* .debug_loc{,.dwo} may not exist at all, or the offset may be outside |
99bcc461 DJ |
25161 | the section. If so, fall through to the complaint in the |
25162 | other branch. */ | |
3019eac3 | 25163 | && DW_UNSND (attr) < dwarf2_section_size (objfile, section)) |
4c2df51b | 25164 | { |
0d53c4c4 | 25165 | struct dwarf2_loclist_baton *baton; |
4c2df51b | 25166 | |
8d749320 | 25167 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_loclist_baton); |
4c2df51b | 25168 | |
8cf6f0b1 | 25169 | fill_in_loclist_baton (cu, baton, attr); |
be391dca | 25170 | |
d00adf39 | 25171 | if (cu->base_known == 0) |
b98664d3 | 25172 | complaint (_("Location list used without " |
3e43a32a | 25173 | "specifying the CU base address.")); |
4c2df51b | 25174 | |
f1e6e072 TT |
25175 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25176 | ? dwarf2_loclist_block_index | |
25177 | : dwarf2_loclist_index); | |
0d53c4c4 DJ |
25178 | SYMBOL_LOCATION_BATON (sym) = baton; |
25179 | } | |
25180 | else | |
25181 | { | |
25182 | struct dwarf2_locexpr_baton *baton; | |
25183 | ||
8d749320 | 25184 | baton = XOBNEW (&objfile->objfile_obstack, struct dwarf2_locexpr_baton); |
ae0d2f24 UW |
25185 | baton->per_cu = cu->per_cu; |
25186 | gdb_assert (baton->per_cu); | |
0d53c4c4 DJ |
25187 | |
25188 | if (attr_form_is_block (attr)) | |
25189 | { | |
25190 | /* Note that we're just copying the block's data pointer | |
25191 | here, not the actual data. We're still pointing into the | |
6502dd73 DJ |
25192 | info_buffer for SYM's objfile; right now we never release |
25193 | that buffer, but when we do clean up properly this may | |
25194 | need to change. */ | |
0d53c4c4 DJ |
25195 | baton->size = DW_BLOCK (attr)->size; |
25196 | baton->data = DW_BLOCK (attr)->data; | |
25197 | } | |
25198 | else | |
25199 | { | |
25200 | dwarf2_invalid_attrib_class_complaint ("location description", | |
25201 | SYMBOL_NATURAL_NAME (sym)); | |
25202 | baton->size = 0; | |
0d53c4c4 | 25203 | } |
6e70227d | 25204 | |
f1e6e072 TT |
25205 | SYMBOL_ACLASS_INDEX (sym) = (is_block |
25206 | ? dwarf2_locexpr_block_index | |
25207 | : dwarf2_locexpr_index); | |
0d53c4c4 DJ |
25208 | SYMBOL_LOCATION_BATON (sym) = baton; |
25209 | } | |
4c2df51b | 25210 | } |
6502dd73 | 25211 | |
9aa1f1e3 TT |
25212 | /* Return the OBJFILE associated with the compilation unit CU. If CU |
25213 | came from a separate debuginfo file, then the master objfile is | |
25214 | returned. */ | |
ae0d2f24 UW |
25215 | |
25216 | struct objfile * | |
25217 | dwarf2_per_cu_objfile (struct dwarf2_per_cu_data *per_cu) | |
25218 | { | |
e3b94546 | 25219 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
ae0d2f24 UW |
25220 | |
25221 | /* Return the master objfile, so that we can report and look up the | |
25222 | correct file containing this variable. */ | |
25223 | if (objfile->separate_debug_objfile_backlink) | |
25224 | objfile = objfile->separate_debug_objfile_backlink; | |
25225 | ||
25226 | return objfile; | |
25227 | } | |
25228 | ||
96408a79 SA |
25229 | /* Return comp_unit_head for PER_CU, either already available in PER_CU->CU |
25230 | (CU_HEADERP is unused in such case) or prepare a temporary copy at | |
25231 | CU_HEADERP first. */ | |
25232 | ||
25233 | static const struct comp_unit_head * | |
25234 | per_cu_header_read_in (struct comp_unit_head *cu_headerp, | |
25235 | struct dwarf2_per_cu_data *per_cu) | |
25236 | { | |
d521ce57 | 25237 | const gdb_byte *info_ptr; |
96408a79 SA |
25238 | |
25239 | if (per_cu->cu) | |
25240 | return &per_cu->cu->header; | |
25241 | ||
9c541725 | 25242 | info_ptr = per_cu->section->buffer + to_underlying (per_cu->sect_off); |
96408a79 SA |
25243 | |
25244 | memset (cu_headerp, 0, sizeof (*cu_headerp)); | |
43988095 JK |
25245 | read_comp_unit_head (cu_headerp, info_ptr, per_cu->section, |
25246 | rcuh_kind::COMPILE); | |
96408a79 SA |
25247 | |
25248 | return cu_headerp; | |
25249 | } | |
25250 | ||
ae0d2f24 UW |
25251 | /* Return the address size given in the compilation unit header for CU. */ |
25252 | ||
98714339 | 25253 | int |
ae0d2f24 UW |
25254 | dwarf2_per_cu_addr_size (struct dwarf2_per_cu_data *per_cu) |
25255 | { | |
96408a79 SA |
25256 | struct comp_unit_head cu_header_local; |
25257 | const struct comp_unit_head *cu_headerp; | |
c471e790 | 25258 | |
96408a79 SA |
25259 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25260 | ||
25261 | return cu_headerp->addr_size; | |
ae0d2f24 UW |
25262 | } |
25263 | ||
9eae7c52 TT |
25264 | /* Return the offset size given in the compilation unit header for CU. */ |
25265 | ||
25266 | int | |
25267 | dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *per_cu) | |
25268 | { | |
96408a79 SA |
25269 | struct comp_unit_head cu_header_local; |
25270 | const struct comp_unit_head *cu_headerp; | |
9c6c53f7 | 25271 | |
96408a79 SA |
25272 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); |
25273 | ||
25274 | return cu_headerp->offset_size; | |
25275 | } | |
25276 | ||
25277 | /* See its dwarf2loc.h declaration. */ | |
25278 | ||
25279 | int | |
25280 | dwarf2_per_cu_ref_addr_size (struct dwarf2_per_cu_data *per_cu) | |
25281 | { | |
25282 | struct comp_unit_head cu_header_local; | |
25283 | const struct comp_unit_head *cu_headerp; | |
25284 | ||
25285 | cu_headerp = per_cu_header_read_in (&cu_header_local, per_cu); | |
25286 | ||
25287 | if (cu_headerp->version == 2) | |
25288 | return cu_headerp->addr_size; | |
25289 | else | |
25290 | return cu_headerp->offset_size; | |
181cebd4 JK |
25291 | } |
25292 | ||
9aa1f1e3 TT |
25293 | /* Return the text offset of the CU. The returned offset comes from |
25294 | this CU's objfile. If this objfile came from a separate debuginfo | |
25295 | file, then the offset may be different from the corresponding | |
25296 | offset in the parent objfile. */ | |
25297 | ||
25298 | CORE_ADDR | |
25299 | dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *per_cu) | |
25300 | { | |
e3b94546 | 25301 | struct objfile *objfile = per_cu->dwarf2_per_objfile->objfile; |
9aa1f1e3 TT |
25302 | |
25303 | return ANOFFSET (objfile->section_offsets, SECT_OFF_TEXT (objfile)); | |
25304 | } | |
25305 | ||
43988095 JK |
25306 | /* Return DWARF version number of PER_CU. */ |
25307 | ||
25308 | short | |
25309 | dwarf2_version (struct dwarf2_per_cu_data *per_cu) | |
25310 | { | |
25311 | return per_cu->dwarf_version; | |
25312 | } | |
25313 | ||
348e048f DE |
25314 | /* Locate the .debug_info compilation unit from CU's objfile which contains |
25315 | the DIE at OFFSET. Raises an error on failure. */ | |
ae038cb0 DJ |
25316 | |
25317 | static struct dwarf2_per_cu_data * | |
9c541725 | 25318 | dwarf2_find_containing_comp_unit (sect_offset sect_off, |
36586728 | 25319 | unsigned int offset_in_dwz, |
ed2dc618 | 25320 | struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25321 | { |
25322 | struct dwarf2_per_cu_data *this_cu; | |
25323 | int low, high; | |
25324 | ||
ae038cb0 | 25325 | low = 0; |
b76e467d | 25326 | high = dwarf2_per_objfile->all_comp_units.size () - 1; |
ae038cb0 DJ |
25327 | while (high > low) |
25328 | { | |
36586728 | 25329 | struct dwarf2_per_cu_data *mid_cu; |
ae038cb0 | 25330 | int mid = low + (high - low) / 2; |
9a619af0 | 25331 | |
36586728 | 25332 | mid_cu = dwarf2_per_objfile->all_comp_units[mid]; |
36586728 | 25333 | if (mid_cu->is_dwz > offset_in_dwz |
81fbbaf9 | 25334 | || (mid_cu->is_dwz == offset_in_dwz |
45b8ae0c | 25335 | && mid_cu->sect_off + mid_cu->length >= sect_off)) |
ae038cb0 DJ |
25336 | high = mid; |
25337 | else | |
25338 | low = mid + 1; | |
25339 | } | |
25340 | gdb_assert (low == high); | |
36586728 | 25341 | this_cu = dwarf2_per_objfile->all_comp_units[low]; |
45b8ae0c | 25342 | if (this_cu->is_dwz != offset_in_dwz || this_cu->sect_off > sect_off) |
ae038cb0 | 25343 | { |
36586728 | 25344 | if (low == 0 || this_cu->is_dwz != offset_in_dwz) |
8a3fe4f8 | 25345 | error (_("Dwarf Error: could not find partial DIE containing " |
9d8780f0 SM |
25346 | "offset %s [in module %s]"), |
25347 | sect_offset_str (sect_off), | |
ed2dc618 | 25348 | bfd_get_filename (dwarf2_per_objfile->objfile->obfd)); |
10b3939b | 25349 | |
9c541725 PA |
25350 | gdb_assert (dwarf2_per_objfile->all_comp_units[low-1]->sect_off |
25351 | <= sect_off); | |
ae038cb0 DJ |
25352 | return dwarf2_per_objfile->all_comp_units[low-1]; |
25353 | } | |
25354 | else | |
25355 | { | |
b76e467d | 25356 | if (low == dwarf2_per_objfile->all_comp_units.size () - 1 |
9c541725 | 25357 | && sect_off >= this_cu->sect_off + this_cu->length) |
9d8780f0 | 25358 | error (_("invalid dwarf2 offset %s"), sect_offset_str (sect_off)); |
9c541725 | 25359 | gdb_assert (sect_off < this_cu->sect_off + this_cu->length); |
ae038cb0 DJ |
25360 | return this_cu; |
25361 | } | |
25362 | } | |
25363 | ||
23745b47 | 25364 | /* Initialize dwarf2_cu CU, owned by PER_CU. */ |
93311388 | 25365 | |
fcd3b13d SM |
25366 | dwarf2_cu::dwarf2_cu (struct dwarf2_per_cu_data *per_cu_) |
25367 | : per_cu (per_cu_), | |
9068261f AB |
25368 | mark (false), |
25369 | has_loclist (false), | |
25370 | checked_producer (false), | |
25371 | producer_is_gxx_lt_4_6 (false), | |
25372 | producer_is_gcc_lt_4_3 (false), | |
eb77c9df | 25373 | producer_is_icc (false), |
9068261f | 25374 | producer_is_icc_lt_14 (false), |
c258c396 | 25375 | producer_is_codewarrior (false), |
9068261f | 25376 | processing_has_namespace_info (false) |
93311388 | 25377 | { |
fcd3b13d SM |
25378 | per_cu->cu = this; |
25379 | } | |
25380 | ||
25381 | /* Destroy a dwarf2_cu. */ | |
25382 | ||
25383 | dwarf2_cu::~dwarf2_cu () | |
25384 | { | |
25385 | per_cu->cu = NULL; | |
9816fde3 JK |
25386 | } |
25387 | ||
25388 | /* Initialize basic fields of dwarf_cu CU according to DIE COMP_UNIT_DIE. */ | |
25389 | ||
25390 | static void | |
95554aad TT |
25391 | prepare_one_comp_unit (struct dwarf2_cu *cu, struct die_info *comp_unit_die, |
25392 | enum language pretend_language) | |
9816fde3 JK |
25393 | { |
25394 | struct attribute *attr; | |
25395 | ||
25396 | /* Set the language we're debugging. */ | |
25397 | attr = dwarf2_attr (comp_unit_die, DW_AT_language, cu); | |
25398 | if (attr) | |
25399 | set_cu_language (DW_UNSND (attr), cu); | |
25400 | else | |
9cded63f | 25401 | { |
95554aad | 25402 | cu->language = pretend_language; |
9cded63f TT |
25403 | cu->language_defn = language_def (cu->language); |
25404 | } | |
dee91e82 | 25405 | |
7d45c7c3 | 25406 | cu->producer = dwarf2_string_attr (comp_unit_die, DW_AT_producer, cu); |
93311388 DE |
25407 | } |
25408 | ||
ae038cb0 DJ |
25409 | /* Increase the age counter on each cached compilation unit, and free |
25410 | any that are too old. */ | |
25411 | ||
25412 | static void | |
ed2dc618 | 25413 | age_cached_comp_units (struct dwarf2_per_objfile *dwarf2_per_objfile) |
ae038cb0 DJ |
25414 | { |
25415 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
25416 | ||
25417 | dwarf2_clear_marks (dwarf2_per_objfile->read_in_chain); | |
25418 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25419 | while (per_cu != NULL) | |
25420 | { | |
25421 | per_cu->cu->last_used ++; | |
b4f54984 | 25422 | if (per_cu->cu->last_used <= dwarf_max_cache_age) |
ae038cb0 DJ |
25423 | dwarf2_mark (per_cu->cu); |
25424 | per_cu = per_cu->cu->read_in_chain; | |
25425 | } | |
25426 | ||
25427 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25428 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25429 | while (per_cu != NULL) | |
25430 | { | |
25431 | struct dwarf2_per_cu_data *next_cu; | |
25432 | ||
25433 | next_cu = per_cu->cu->read_in_chain; | |
25434 | ||
25435 | if (!per_cu->cu->mark) | |
25436 | { | |
fcd3b13d | 25437 | delete per_cu->cu; |
ae038cb0 DJ |
25438 | *last_chain = next_cu; |
25439 | } | |
25440 | else | |
25441 | last_chain = &per_cu->cu->read_in_chain; | |
25442 | ||
25443 | per_cu = next_cu; | |
25444 | } | |
25445 | } | |
25446 | ||
25447 | /* Remove a single compilation unit from the cache. */ | |
25448 | ||
25449 | static void | |
dee91e82 | 25450 | free_one_cached_comp_unit (struct dwarf2_per_cu_data *target_per_cu) |
ae038cb0 DJ |
25451 | { |
25452 | struct dwarf2_per_cu_data *per_cu, **last_chain; | |
ed2dc618 SM |
25453 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25454 | = target_per_cu->dwarf2_per_objfile; | |
ae038cb0 DJ |
25455 | |
25456 | per_cu = dwarf2_per_objfile->read_in_chain; | |
25457 | last_chain = &dwarf2_per_objfile->read_in_chain; | |
25458 | while (per_cu != NULL) | |
25459 | { | |
25460 | struct dwarf2_per_cu_data *next_cu; | |
25461 | ||
25462 | next_cu = per_cu->cu->read_in_chain; | |
25463 | ||
dee91e82 | 25464 | if (per_cu == target_per_cu) |
ae038cb0 | 25465 | { |
fcd3b13d | 25466 | delete per_cu->cu; |
dee91e82 | 25467 | per_cu->cu = NULL; |
ae038cb0 DJ |
25468 | *last_chain = next_cu; |
25469 | break; | |
25470 | } | |
25471 | else | |
25472 | last_chain = &per_cu->cu->read_in_chain; | |
25473 | ||
25474 | per_cu = next_cu; | |
25475 | } | |
25476 | } | |
25477 | ||
dee91e82 DE |
25478 | /* A set of CU "per_cu" pointer, DIE offset, and GDB type pointer. |
25479 | We store these in a hash table separate from the DIEs, and preserve them | |
25480 | when the DIEs are flushed out of cache. | |
25481 | ||
25482 | The CU "per_cu" pointer is needed because offset alone is not enough to | |
3019eac3 | 25483 | uniquely identify the type. A file may have multiple .debug_types sections, |
c88ee1f0 DE |
25484 | or the type may come from a DWO file. Furthermore, while it's more logical |
25485 | to use per_cu->section+offset, with Fission the section with the data is in | |
25486 | the DWO file but we don't know that section at the point we need it. | |
25487 | We have to use something in dwarf2_per_cu_data (or the pointer to it) | |
25488 | because we can enter the lookup routine, get_die_type_at_offset, from | |
25489 | outside this file, and thus won't necessarily have PER_CU->cu. | |
25490 | Fortunately, PER_CU is stable for the life of the objfile. */ | |
1c379e20 | 25491 | |
dee91e82 | 25492 | struct dwarf2_per_cu_offset_and_type |
1c379e20 | 25493 | { |
dee91e82 | 25494 | const struct dwarf2_per_cu_data *per_cu; |
9c541725 | 25495 | sect_offset sect_off; |
1c379e20 DJ |
25496 | struct type *type; |
25497 | }; | |
25498 | ||
dee91e82 | 25499 | /* Hash function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25500 | |
25501 | static hashval_t | |
dee91e82 | 25502 | per_cu_offset_and_type_hash (const void *item) |
1c379e20 | 25503 | { |
9a3c8263 SM |
25504 | const struct dwarf2_per_cu_offset_and_type *ofs |
25505 | = (const struct dwarf2_per_cu_offset_and_type *) item; | |
9a619af0 | 25506 | |
9c541725 | 25507 | return (uintptr_t) ofs->per_cu + to_underlying (ofs->sect_off); |
1c379e20 DJ |
25508 | } |
25509 | ||
dee91e82 | 25510 | /* Equality function for a dwarf2_per_cu_offset_and_type. */ |
1c379e20 DJ |
25511 | |
25512 | static int | |
dee91e82 | 25513 | per_cu_offset_and_type_eq (const void *item_lhs, const void *item_rhs) |
1c379e20 | 25514 | { |
9a3c8263 SM |
25515 | const struct dwarf2_per_cu_offset_and_type *ofs_lhs |
25516 | = (const struct dwarf2_per_cu_offset_and_type *) item_lhs; | |
25517 | const struct dwarf2_per_cu_offset_and_type *ofs_rhs | |
25518 | = (const struct dwarf2_per_cu_offset_and_type *) item_rhs; | |
9a619af0 | 25519 | |
dee91e82 | 25520 | return (ofs_lhs->per_cu == ofs_rhs->per_cu |
9c541725 | 25521 | && ofs_lhs->sect_off == ofs_rhs->sect_off); |
1c379e20 DJ |
25522 | } |
25523 | ||
25524 | /* Set the type associated with DIE to TYPE. Save it in CU's hash | |
7e314c57 JK |
25525 | table if necessary. For convenience, return TYPE. |
25526 | ||
25527 | The DIEs reading must have careful ordering to: | |
25528 | * Not cause infite loops trying to read in DIEs as a prerequisite for | |
25529 | reading current DIE. | |
25530 | * Not trying to dereference contents of still incompletely read in types | |
25531 | while reading in other DIEs. | |
25532 | * Enable referencing still incompletely read in types just by a pointer to | |
25533 | the type without accessing its fields. | |
25534 | ||
25535 | Therefore caller should follow these rules: | |
25536 | * Try to fetch any prerequisite types we may need to build this DIE type | |
25537 | before building the type and calling set_die_type. | |
e71ec853 | 25538 | * After building type call set_die_type for current DIE as soon as |
7e314c57 JK |
25539 | possible before fetching more types to complete the current type. |
25540 | * Make the type as complete as possible before fetching more types. */ | |
1c379e20 | 25541 | |
f792889a | 25542 | static struct type * |
1c379e20 DJ |
25543 | set_die_type (struct die_info *die, struct type *type, struct dwarf2_cu *cu) |
25544 | { | |
518817b3 SM |
25545 | struct dwarf2_per_objfile *dwarf2_per_objfile |
25546 | = cu->per_cu->dwarf2_per_objfile; | |
dee91e82 | 25547 | struct dwarf2_per_cu_offset_and_type **slot, ofs; |
ed2dc618 | 25548 | struct objfile *objfile = dwarf2_per_objfile->objfile; |
3cdcd0ce JB |
25549 | struct attribute *attr; |
25550 | struct dynamic_prop prop; | |
1c379e20 | 25551 | |
b4ba55a1 JB |
25552 | /* For Ada types, make sure that the gnat-specific data is always |
25553 | initialized (if not already set). There are a few types where | |
25554 | we should not be doing so, because the type-specific area is | |
25555 | already used to hold some other piece of info (eg: TYPE_CODE_FLT | |
25556 | where the type-specific area is used to store the floatformat). | |
25557 | But this is not a problem, because the gnat-specific information | |
25558 | is actually not needed for these types. */ | |
25559 | if (need_gnat_info (cu) | |
25560 | && TYPE_CODE (type) != TYPE_CODE_FUNC | |
25561 | && TYPE_CODE (type) != TYPE_CODE_FLT | |
09e2d7c7 DE |
25562 | && TYPE_CODE (type) != TYPE_CODE_METHODPTR |
25563 | && TYPE_CODE (type) != TYPE_CODE_MEMBERPTR | |
25564 | && TYPE_CODE (type) != TYPE_CODE_METHOD | |
b4ba55a1 JB |
25565 | && !HAVE_GNAT_AUX_INFO (type)) |
25566 | INIT_GNAT_SPECIFIC (type); | |
25567 | ||
3f2f83dd KB |
25568 | /* Read DW_AT_allocated and set in type. */ |
25569 | attr = dwarf2_attr (die, DW_AT_allocated, cu); | |
25570 | if (attr_form_is_block (attr)) | |
25571 | { | |
25572 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25573 | add_dyn_prop (DYN_PROP_ALLOCATED, prop, type); |
3f2f83dd KB |
25574 | } |
25575 | else if (attr != NULL) | |
25576 | { | |
b98664d3 | 25577 | complaint (_("DW_AT_allocated has the wrong form (%s) at DIE %s"), |
9c541725 | 25578 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25579 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25580 | } |
25581 | ||
25582 | /* Read DW_AT_associated and set in type. */ | |
25583 | attr = dwarf2_attr (die, DW_AT_associated, cu); | |
25584 | if (attr_form_is_block (attr)) | |
25585 | { | |
25586 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25587 | add_dyn_prop (DYN_PROP_ASSOCIATED, prop, type); |
3f2f83dd KB |
25588 | } |
25589 | else if (attr != NULL) | |
25590 | { | |
b98664d3 | 25591 | complaint (_("DW_AT_associated has the wrong form (%s) at DIE %s"), |
9c541725 | 25592 | (attr != NULL ? dwarf_form_name (attr->form) : "n/a"), |
9d8780f0 | 25593 | sect_offset_str (die->sect_off)); |
3f2f83dd KB |
25594 | } |
25595 | ||
3cdcd0ce JB |
25596 | /* Read DW_AT_data_location and set in type. */ |
25597 | attr = dwarf2_attr (die, DW_AT_data_location, cu); | |
25598 | if (attr_to_dynamic_prop (attr, die, cu, &prop)) | |
50a82047 | 25599 | add_dyn_prop (DYN_PROP_DATA_LOCATION, prop, type); |
3cdcd0ce | 25600 | |
dee91e82 | 25601 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25602 | { |
dee91e82 DE |
25603 | dwarf2_per_objfile->die_type_hash = |
25604 | htab_create_alloc_ex (127, | |
25605 | per_cu_offset_and_type_hash, | |
25606 | per_cu_offset_and_type_eq, | |
25607 | NULL, | |
25608 | &objfile->objfile_obstack, | |
25609 | hashtab_obstack_allocate, | |
25610 | dummy_obstack_deallocate); | |
f792889a | 25611 | } |
1c379e20 | 25612 | |
dee91e82 | 25613 | ofs.per_cu = cu->per_cu; |
9c541725 | 25614 | ofs.sect_off = die->sect_off; |
1c379e20 | 25615 | ofs.type = type; |
dee91e82 DE |
25616 | slot = (struct dwarf2_per_cu_offset_and_type **) |
25617 | htab_find_slot (dwarf2_per_objfile->die_type_hash, &ofs, INSERT); | |
7e314c57 | 25618 | if (*slot) |
b98664d3 | 25619 | complaint (_("A problem internal to GDB: DIE %s has type already set"), |
9d8780f0 | 25620 | sect_offset_str (die->sect_off)); |
8d749320 SM |
25621 | *slot = XOBNEW (&objfile->objfile_obstack, |
25622 | struct dwarf2_per_cu_offset_and_type); | |
1c379e20 | 25623 | **slot = ofs; |
f792889a | 25624 | return type; |
1c379e20 DJ |
25625 | } |
25626 | ||
9c541725 | 25627 | /* Look up the type for the die at SECT_OFF in PER_CU in die_type_hash, |
02142a6c | 25628 | or return NULL if the die does not have a saved type. */ |
1c379e20 DJ |
25629 | |
25630 | static struct type * | |
9c541725 | 25631 | get_die_type_at_offset (sect_offset sect_off, |
673bfd45 | 25632 | struct dwarf2_per_cu_data *per_cu) |
1c379e20 | 25633 | { |
dee91e82 | 25634 | struct dwarf2_per_cu_offset_and_type *slot, ofs; |
ed2dc618 | 25635 | struct dwarf2_per_objfile *dwarf2_per_objfile = per_cu->dwarf2_per_objfile; |
f792889a | 25636 | |
dee91e82 | 25637 | if (dwarf2_per_objfile->die_type_hash == NULL) |
f792889a | 25638 | return NULL; |
1c379e20 | 25639 | |
dee91e82 | 25640 | ofs.per_cu = per_cu; |
9c541725 | 25641 | ofs.sect_off = sect_off; |
9a3c8263 SM |
25642 | slot = ((struct dwarf2_per_cu_offset_and_type *) |
25643 | htab_find (dwarf2_per_objfile->die_type_hash, &ofs)); | |
1c379e20 DJ |
25644 | if (slot) |
25645 | return slot->type; | |
25646 | else | |
25647 | return NULL; | |
25648 | } | |
25649 | ||
02142a6c | 25650 | /* Look up the type for DIE in CU in die_type_hash, |
673bfd45 DE |
25651 | or return NULL if DIE does not have a saved type. */ |
25652 | ||
25653 | static struct type * | |
25654 | get_die_type (struct die_info *die, struct dwarf2_cu *cu) | |
25655 | { | |
9c541725 | 25656 | return get_die_type_at_offset (die->sect_off, cu->per_cu); |
673bfd45 DE |
25657 | } |
25658 | ||
10b3939b DJ |
25659 | /* Add a dependence relationship from CU to REF_PER_CU. */ |
25660 | ||
25661 | static void | |
25662 | dwarf2_add_dependence (struct dwarf2_cu *cu, | |
25663 | struct dwarf2_per_cu_data *ref_per_cu) | |
25664 | { | |
25665 | void **slot; | |
25666 | ||
25667 | if (cu->dependencies == NULL) | |
25668 | cu->dependencies | |
25669 | = htab_create_alloc_ex (5, htab_hash_pointer, htab_eq_pointer, | |
25670 | NULL, &cu->comp_unit_obstack, | |
25671 | hashtab_obstack_allocate, | |
25672 | dummy_obstack_deallocate); | |
25673 | ||
25674 | slot = htab_find_slot (cu->dependencies, ref_per_cu, INSERT); | |
25675 | if (*slot == NULL) | |
25676 | *slot = ref_per_cu; | |
25677 | } | |
1c379e20 | 25678 | |
f504f079 DE |
25679 | /* Subroutine of dwarf2_mark to pass to htab_traverse. |
25680 | Set the mark field in every compilation unit in the | |
ae038cb0 DJ |
25681 | cache that we must keep because we are keeping CU. */ |
25682 | ||
10b3939b DJ |
25683 | static int |
25684 | dwarf2_mark_helper (void **slot, void *data) | |
25685 | { | |
25686 | struct dwarf2_per_cu_data *per_cu; | |
25687 | ||
25688 | per_cu = (struct dwarf2_per_cu_data *) *slot; | |
d07ed419 JK |
25689 | |
25690 | /* cu->dependencies references may not yet have been ever read if QUIT aborts | |
25691 | reading of the chain. As such dependencies remain valid it is not much | |
25692 | useful to track and undo them during QUIT cleanups. */ | |
25693 | if (per_cu->cu == NULL) | |
25694 | return 1; | |
25695 | ||
10b3939b DJ |
25696 | if (per_cu->cu->mark) |
25697 | return 1; | |
9068261f | 25698 | per_cu->cu->mark = true; |
10b3939b DJ |
25699 | |
25700 | if (per_cu->cu->dependencies != NULL) | |
25701 | htab_traverse (per_cu->cu->dependencies, dwarf2_mark_helper, NULL); | |
25702 | ||
25703 | return 1; | |
25704 | } | |
25705 | ||
f504f079 DE |
25706 | /* Set the mark field in CU and in every other compilation unit in the |
25707 | cache that we must keep because we are keeping CU. */ | |
25708 | ||
ae038cb0 DJ |
25709 | static void |
25710 | dwarf2_mark (struct dwarf2_cu *cu) | |
25711 | { | |
25712 | if (cu->mark) | |
25713 | return; | |
9068261f | 25714 | cu->mark = true; |
10b3939b DJ |
25715 | if (cu->dependencies != NULL) |
25716 | htab_traverse (cu->dependencies, dwarf2_mark_helper, NULL); | |
ae038cb0 DJ |
25717 | } |
25718 | ||
25719 | static void | |
25720 | dwarf2_clear_marks (struct dwarf2_per_cu_data *per_cu) | |
25721 | { | |
25722 | while (per_cu) | |
25723 | { | |
9068261f | 25724 | per_cu->cu->mark = false; |
ae038cb0 DJ |
25725 | per_cu = per_cu->cu->read_in_chain; |
25726 | } | |
72bf9492 DJ |
25727 | } |
25728 | ||
72bf9492 DJ |
25729 | /* Trivial hash function for partial_die_info: the hash value of a DIE |
25730 | is its offset in .debug_info for this objfile. */ | |
25731 | ||
25732 | static hashval_t | |
25733 | partial_die_hash (const void *item) | |
25734 | { | |
9a3c8263 SM |
25735 | const struct partial_die_info *part_die |
25736 | = (const struct partial_die_info *) item; | |
9a619af0 | 25737 | |
9c541725 | 25738 | return to_underlying (part_die->sect_off); |
72bf9492 DJ |
25739 | } |
25740 | ||
25741 | /* Trivial comparison function for partial_die_info structures: two DIEs | |
25742 | are equal if they have the same offset. */ | |
25743 | ||
25744 | static int | |
25745 | partial_die_eq (const void *item_lhs, const void *item_rhs) | |
25746 | { | |
9a3c8263 SM |
25747 | const struct partial_die_info *part_die_lhs |
25748 | = (const struct partial_die_info *) item_lhs; | |
25749 | const struct partial_die_info *part_die_rhs | |
25750 | = (const struct partial_die_info *) item_rhs; | |
9a619af0 | 25751 | |
9c541725 | 25752 | return part_die_lhs->sect_off == part_die_rhs->sect_off; |
72bf9492 DJ |
25753 | } |
25754 | ||
3c3bb058 AB |
25755 | struct cmd_list_element *set_dwarf_cmdlist; |
25756 | struct cmd_list_element *show_dwarf_cmdlist; | |
ae038cb0 DJ |
25757 | |
25758 | static void | |
981a3fb3 | 25759 | set_dwarf_cmd (const char *args, int from_tty) |
ae038cb0 | 25760 | { |
b4f54984 | 25761 | help_list (set_dwarf_cmdlist, "maintenance set dwarf ", all_commands, |
635c7e8a | 25762 | gdb_stdout); |
ae038cb0 DJ |
25763 | } |
25764 | ||
25765 | static void | |
981a3fb3 | 25766 | show_dwarf_cmd (const char *args, int from_tty) |
6e70227d | 25767 | { |
b4f54984 | 25768 | cmd_show_list (show_dwarf_cmdlist, from_tty, ""); |
ae038cb0 DJ |
25769 | } |
25770 | ||
cd4fb1b2 | 25771 | int dwarf_always_disassemble; |
437afbb8 | 25772 | |
437afbb8 | 25773 | static void |
cd4fb1b2 SM |
25774 | show_dwarf_always_disassemble (struct ui_file *file, int from_tty, |
25775 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25776 | { |
cd4fb1b2 SM |
25777 | fprintf_filtered (file, |
25778 | _("Whether to always disassemble " | |
25779 | "DWARF expressions is %s.\n"), | |
25780 | value); | |
9291a0cd TT |
25781 | } |
25782 | ||
9291a0cd | 25783 | static void |
cd4fb1b2 SM |
25784 | show_check_physname (struct ui_file *file, int from_tty, |
25785 | struct cmd_list_element *c, const char *value) | |
9291a0cd | 25786 | { |
cd4fb1b2 SM |
25787 | fprintf_filtered (file, |
25788 | _("Whether to check \"physname\" is %s.\n"), | |
25789 | value); | |
9291a0cd TT |
25790 | } |
25791 | ||
cd4fb1b2 SM |
25792 | void |
25793 | _initialize_dwarf2_read (void) | |
9291a0cd | 25794 | { |
cd4fb1b2 SM |
25795 | add_prefix_cmd ("dwarf", class_maintenance, set_dwarf_cmd, _("\ |
25796 | Set DWARF specific variables.\n\ | |
25797 | Configure DWARF variables such as the cache size"), | |
25798 | &set_dwarf_cmdlist, "maintenance set dwarf ", | |
25799 | 0/*allow-unknown*/, &maintenance_set_cmdlist); | |
156942c7 | 25800 | |
cd4fb1b2 SM |
25801 | add_prefix_cmd ("dwarf", class_maintenance, show_dwarf_cmd, _("\ |
25802 | Show DWARF specific variables\n\ | |
25803 | Show DWARF variables such as the cache size"), | |
25804 | &show_dwarf_cmdlist, "maintenance show dwarf ", | |
25805 | 0/*allow-unknown*/, &maintenance_show_cmdlist); | |
156942c7 | 25806 | |
cd4fb1b2 SM |
25807 | add_setshow_zinteger_cmd ("max-cache-age", class_obscure, |
25808 | &dwarf_max_cache_age, _("\ | |
25809 | Set the upper bound on the age of cached DWARF compilation units."), _("\ | |
25810 | Show the upper bound on the age of cached DWARF compilation units."), _("\ | |
25811 | A higher limit means that cached compilation units will be stored\n\ | |
25812 | in memory longer, and more total memory will be used. Zero disables\n\ | |
25813 | caching, which can slow down startup."), | |
25814 | NULL, | |
25815 | show_dwarf_max_cache_age, | |
25816 | &set_dwarf_cmdlist, | |
25817 | &show_dwarf_cmdlist); | |
156942c7 | 25818 | |
cd4fb1b2 SM |
25819 | add_setshow_boolean_cmd ("always-disassemble", class_obscure, |
25820 | &dwarf_always_disassemble, _("\ | |
25821 | Set whether `info address' always disassembles DWARF expressions."), _("\ | |
25822 | Show whether `info address' always disassembles DWARF expressions."), _("\ | |
25823 | When enabled, DWARF expressions are always printed in an assembly-like\n\ | |
25824 | syntax. When disabled, expressions will be printed in a more\n\ | |
25825 | conversational style, when possible."), | |
25826 | NULL, | |
25827 | show_dwarf_always_disassemble, | |
25828 | &set_dwarf_cmdlist, | |
25829 | &show_dwarf_cmdlist); | |
9291a0cd | 25830 | |
cd4fb1b2 SM |
25831 | add_setshow_zuinteger_cmd ("dwarf-read", no_class, &dwarf_read_debug, _("\ |
25832 | Set debugging of the DWARF reader."), _("\ | |
25833 | Show debugging of the DWARF reader."), _("\ | |
25834 | When enabled (non-zero), debugging messages are printed during DWARF\n\ | |
25835 | reading and symtab expansion. A value of 1 (one) provides basic\n\ | |
25836 | information. A value greater than 1 provides more verbose information."), | |
25837 | NULL, | |
25838 | NULL, | |
25839 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25840 | |
cd4fb1b2 SM |
25841 | add_setshow_zuinteger_cmd ("dwarf-die", no_class, &dwarf_die_debug, _("\ |
25842 | Set debugging of the DWARF DIE reader."), _("\ | |
25843 | Show debugging of the DWARF DIE reader."), _("\ | |
25844 | When enabled (non-zero), DIEs are dumped after they are read in.\n\ | |
25845 | The value is the maximum depth to print."), | |
25846 | NULL, | |
25847 | NULL, | |
25848 | &setdebuglist, &showdebuglist); | |
9291a0cd | 25849 | |
cd4fb1b2 SM |
25850 | add_setshow_zuinteger_cmd ("dwarf-line", no_class, &dwarf_line_debug, _("\ |
25851 | Set debugging of the dwarf line reader."), _("\ | |
25852 | Show debugging of the dwarf line reader."), _("\ | |
25853 | When enabled (non-zero), line number entries are dumped as they are read in.\n\ | |
25854 | A value of 1 (one) provides basic information.\n\ | |
25855 | A value greater than 1 provides more verbose information."), | |
25856 | NULL, | |
25857 | NULL, | |
25858 | &setdebuglist, &showdebuglist); | |
437afbb8 | 25859 | |
cd4fb1b2 SM |
25860 | add_setshow_boolean_cmd ("check-physname", no_class, &check_physname, _("\ |
25861 | Set cross-checking of \"physname\" code against demangler."), _("\ | |
25862 | Show cross-checking of \"physname\" code against demangler."), _("\ | |
25863 | When enabled, GDB's internal \"physname\" code is checked against\n\ | |
25864 | the demangler."), | |
25865 | NULL, show_check_physname, | |
25866 | &setdebuglist, &showdebuglist); | |
900e11f9 | 25867 | |
e615022a DE |
25868 | add_setshow_boolean_cmd ("use-deprecated-index-sections", |
25869 | no_class, &use_deprecated_index_sections, _("\ | |
25870 | Set whether to use deprecated gdb_index sections."), _("\ | |
25871 | Show whether to use deprecated gdb_index sections."), _("\ | |
25872 | When enabled, deprecated .gdb_index sections are used anyway.\n\ | |
25873 | Normally they are ignored either because of a missing feature or\n\ | |
25874 | performance issue.\n\ | |
25875 | Warning: This option must be enabled before gdb reads the file."), | |
25876 | NULL, | |
25877 | NULL, | |
25878 | &setlist, &showlist); | |
25879 | ||
f1e6e072 TT |
25880 | dwarf2_locexpr_index = register_symbol_computed_impl (LOC_COMPUTED, |
25881 | &dwarf2_locexpr_funcs); | |
25882 | dwarf2_loclist_index = register_symbol_computed_impl (LOC_COMPUTED, | |
25883 | &dwarf2_loclist_funcs); | |
25884 | ||
25885 | dwarf2_locexpr_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25886 | &dwarf2_block_frame_base_locexpr_funcs); | |
25887 | dwarf2_loclist_block_index = register_symbol_block_impl (LOC_BLOCK, | |
25888 | &dwarf2_block_frame_base_loclist_funcs); | |
c62446b1 PA |
25889 | |
25890 | #if GDB_SELF_TEST | |
25891 | selftests::register_test ("dw2_expand_symtabs_matching", | |
25892 | selftests::dw2_expand_symtabs_matching::run_test); | |
25893 | #endif | |
6502dd73 | 25894 | } |